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Set EI_OSABI to ELFOSABI_GNU for local IFUNC symbols
[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
b90efa5b 2 Copyright (C) 1993-2015 Free Software Foundation, Inc.
252b5132 3
571fe01f 4 This file is part of BFD, the Binary File Descriptor library.
252b5132 5
571fe01f
NC		 6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
cd123cb7 8 the Free Software Foundation; either version 3 of the License, or
571fe01f 9 (at your option) any later version.
252b5132 10
571fe01f
NC		 11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
252b5132 15
571fe01f
NC		 16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
cd123cb7
NC		 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
252b5132 20
252b5132 21#include "sysdep.h"
3db64b00 22#include "bfd.h"
252b5132
RH		 23#include "bfdlink.h"
24#include "libbfd.h"
25#include "elf-bfd.h"
5a68afcf 26#include "elf-nacl.h"
eac338cf 27#include "elf-vxworks.h"
142411ca 28#include "bfd_stdint.h"
c25bc9fc
L		 29#include "objalloc.h"
30#include "hashtab.h"
e41b3a13 31#include "dwarf2.h"
252b5132 32
55fd94b0
AM		 33/* 386 uses REL relocations instead of RELA. */
34#define USE_REL 1
252b5132
RH		 35
36#include "elf/i386.h"
37
38static reloc_howto_type elf_howto_table[]=
39{
6346d5ca 40 HOWTO(R_386_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
1b452ec6 41 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 42 TRUE, 0x00000000, 0x00000000, FALSE),
43 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 44 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 45 TRUE, 0xffffffff, 0xffffffff, FALSE),
46 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 47 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 48 TRUE, 0xffffffff, 0xffffffff, TRUE),
49 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 50 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 51 TRUE, 0xffffffff, 0xffffffff, FALSE),
52 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 53 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 54 TRUE, 0xffffffff, 0xffffffff, TRUE),
55 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 56 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 57 TRUE, 0xffffffff, 0xffffffff, FALSE),
58 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 59 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 60 TRUE, 0xffffffff, 0xffffffff, FALSE),
61 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 62 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 63 TRUE, 0xffffffff, 0xffffffff, FALSE),
64 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 65 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 66 TRUE, 0xffffffff, 0xffffffff, FALSE),
67 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 68 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 69 TRUE, 0xffffffff, 0xffffffff, FALSE),
70 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 71 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 72 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 73
dc47f327
AM		 74 /* We have a gap in the reloc numbers here.
75 R_386_standard counts the number up to this point, and
76 R_386_ext_offset is the value to subtract from a reloc type of
77 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 78#define R_386_standard (R_386_GOTPC + 1)
79#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 80
37e55690 81 /* These relocs are a GNU extension. */
b34976b6 82 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 83 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 84 TRUE, 0xffffffff, 0xffffffff, FALSE),
85 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 86 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 87 TRUE, 0xffffffff, 0xffffffff, FALSE),
88 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 89 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 90 TRUE, 0xffffffff, 0xffffffff, FALSE),
91 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 92 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 93 TRUE, 0xffffffff, 0xffffffff, FALSE),
94 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 95 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 96 TRUE, 0xffffffff, 0xffffffff, FALSE),
97 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 98 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 99 TRUE, 0xffffffff, 0xffffffff, FALSE),
100 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 101 bfd_elf_generic_reloc, "R_386_16",
b34976b6 102 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 103 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 104 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 105 TRUE, 0xffff, 0xffff, TRUE),
106 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 107 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 108 TRUE, 0xff, 0xff, FALSE),
109 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 110 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 111 TRUE, 0xff, 0xff, TRUE),
dc47f327 112
55fd94b0
AM		 113#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
114#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 115 /* These are common with Solaris TLS implementation. */
b34976b6 116 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 117 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 118 TRUE, 0xffffffff, 0xffffffff, FALSE),
119 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 120 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 121 TRUE, 0xffffffff, 0xffffffff, FALSE),
122 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 123 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 124 TRUE, 0xffffffff, 0xffffffff, FALSE),
125 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 126 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 127 TRUE, 0xffffffff, 0xffffffff, FALSE),
128 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 129 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 130 TRUE, 0xffffffff, 0xffffffff, FALSE),
131 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 132 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 133 TRUE, 0xffffffff, 0xffffffff, FALSE),
1788fc08
L		 134 HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
135 bfd_elf_generic_reloc, "R_386_SIZE32",
136 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 137 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
138 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
139 TRUE, 0xffffffff, 0xffffffff, FALSE),
140 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
141 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
142 FALSE, 0, 0, FALSE),
143 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_386_TLS_DESC",
145 TRUE, 0xffffffff, 0xffffffff, FALSE),
cbe950e9
L		 146 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
147 bfd_elf_generic_reloc, "R_386_IRELATIVE",
148 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 149
150 /* Another gap. */
cbe950e9
L		 151#define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset)
152#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative)
252b5132
RH		 153
154/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 155 HOWTO (R_386_GNU_VTINHERIT, /* type */
156 0, /* rightshift */
157 2, /* size (0 = byte, 1 = short, 2 = long) */
158 0, /* bitsize */
b34976b6 159 FALSE, /* pc_relative */
252b5132
RH		 160 0, /* bitpos */
161 complain_overflow_dont, /* complain_on_overflow */
162 NULL, /* special_function */
163 "R_386_GNU_VTINHERIT", /* name */
b34976b6 164 FALSE, /* partial_inplace */
252b5132
RH		 165 0, /* src_mask */
166 0, /* dst_mask */
b34976b6 167 FALSE), /* pcrel_offset */
252b5132
RH		 168
169/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 170 HOWTO (R_386_GNU_VTENTRY, /* type */
171 0, /* rightshift */
172 2, /* size (0 = byte, 1 = short, 2 = long) */
173 0, /* bitsize */
b34976b6 174 FALSE, /* pc_relative */
252b5132
RH		 175 0, /* bitpos */
176 complain_overflow_dont, /* complain_on_overflow */
177 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
178 "R_386_GNU_VTENTRY", /* name */
b34976b6 179 FALSE, /* partial_inplace */
252b5132
RH		 180 0, /* src_mask */
181 0, /* dst_mask */
b34976b6 182 FALSE) /* pcrel_offset */
dc47f327 183
55fd94b0 184#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 185
186};
187
252b5132 188#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 189#define TRACE(str) \
190 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 191#else
192#define TRACE(str)
193#endif
194
195static reloc_howto_type *
55fd94b0
AM		 196elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
197 bfd_reloc_code_real_type code)
252b5132
RH		 198{
199 switch (code)
200 {
201 case BFD_RELOC_NONE:
202 TRACE ("BFD_RELOC_NONE");
55fd94b0 203 return &elf_howto_table[R_386_NONE];
252b5132
RH		 204
205 case BFD_RELOC_32:
206 TRACE ("BFD_RELOC_32");
55fd94b0 207 return &elf_howto_table[R_386_32];
252b5132
RH		 208
209 case BFD_RELOC_CTOR:
210 TRACE ("BFD_RELOC_CTOR");
55fd94b0 211 return &elf_howto_table[R_386_32];
252b5132
RH		 212
213 case BFD_RELOC_32_PCREL:
214 TRACE ("BFD_RELOC_PC32");
55fd94b0 215 return &elf_howto_table[R_386_PC32];
252b5132
RH		 216
217 case BFD_RELOC_386_GOT32:
218 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 219 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 220
221 case BFD_RELOC_386_PLT32:
222 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 223 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 224
225 case BFD_RELOC_386_COPY:
226 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 227 return &elf_howto_table[R_386_COPY];
252b5132
RH		 228
229 case BFD_RELOC_386_GLOB_DAT:
230 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 231 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 232
233 case BFD_RELOC_386_JUMP_SLOT:
234 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 235 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 236
237 case BFD_RELOC_386_RELATIVE:
238 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 239 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 240
241 case BFD_RELOC_386_GOTOFF:
242 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 243 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 244
245 case BFD_RELOC_386_GOTPC:
246 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 247 return &elf_howto_table[R_386_GOTPC];
252b5132 248
37e55690
JJ		 249 /* These relocs are a GNU extension. */
250 case BFD_RELOC_386_TLS_TPOFF:
251 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 252 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 253
254 case BFD_RELOC_386_TLS_IE:
255 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 256 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 257
258 case BFD_RELOC_386_TLS_GOTIE:
259 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 260 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 261
13ae64f3
JJ		 262 case BFD_RELOC_386_TLS_LE:
263 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 264 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 265
266 case BFD_RELOC_386_TLS_GD:
267 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 268 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 269
270 case BFD_RELOC_386_TLS_LDM:
271 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 272 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 273
252b5132
RH		 274 case BFD_RELOC_16:
275 TRACE ("BFD_RELOC_16");
55fd94b0 276 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 277
278 case BFD_RELOC_16_PCREL:
279 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 280 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 281
282 case BFD_RELOC_8:
283 TRACE ("BFD_RELOC_8");
55fd94b0 284 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 285
286 case BFD_RELOC_8_PCREL:
287 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 288 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 289
13ae64f3
JJ		 290 /* Common with Sun TLS implementation. */
291 case BFD_RELOC_386_TLS_LDO_32:
292 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 293 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 294
295 case BFD_RELOC_386_TLS_IE_32:
296 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 297 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 298
299 case BFD_RELOC_386_TLS_LE_32:
300 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 301 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 302
303 case BFD_RELOC_386_TLS_DTPMOD32:
304 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 305 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 306
307 case BFD_RELOC_386_TLS_DTPOFF32:
308 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 309 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 310
311 case BFD_RELOC_386_TLS_TPOFF32:
312 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 313 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 314
1788fc08
L		 315 case BFD_RELOC_SIZE32:
316 TRACE ("BFD_RELOC_SIZE32");
317 return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset];
318
67a4f2b7
AO		 319 case BFD_RELOC_386_TLS_GOTDESC:
320 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
321 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
322
323 case BFD_RELOC_386_TLS_DESC_CALL:
324 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
325 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
326
327 case BFD_RELOC_386_TLS_DESC:
328 TRACE ("BFD_RELOC_386_TLS_DESC");
329 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
330
cbe950e9
L		 331 case BFD_RELOC_386_IRELATIVE:
332 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 333 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 334
252b5132
RH		 335 case BFD_RELOC_VTABLE_INHERIT:
336 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 337 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 338
339 case BFD_RELOC_VTABLE_ENTRY:
340 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 341 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 342
343 default:
344 break;
345 }
346
347 TRACE ("Unknown");
348 return 0;
349}
350
157090f7
AM		 351static reloc_howto_type *
352elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
353 const char *r_name)
354{
355 unsigned int i;
356
357 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
358 if (elf_howto_table[i].name != NULL
359 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
360 return &elf_howto_table[i];
361
362 return NULL;
363}
364
142411ca
L		 365static reloc_howto_type *
366elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 367{
dc47f327
AM		 368 unsigned int indx;
369
370 if ((indx = r_type) >= R_386_standard
371 && ((indx = r_type - R_386_ext_offset) - R_386_standard
372 >= R_386_ext - R_386_standard)
13ae64f3 373 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9
L		 374 >= R_386_irelative - R_386_ext)
375 && ((indx = r_type - R_386_vt_offset) - R_386_irelative
376 >= R_386_vt - R_386_irelative))
252b5132 377 {
d003868e
AM		 378 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
379 abfd, (int) r_type);
55fd94b0 380 indx = R_386_NONE;
252b5132 381 }
06614111
NC		 382 /* PR 17512: file: 0f67f69d. */
383 if (elf_howto_table [indx].type != r_type)
384 return NULL;
142411ca
L		 385 return &elf_howto_table[indx];
386}
387
388static void
389elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
390 arelent *cache_ptr,
391 Elf_Internal_Rela *dst)
392{
393 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
394 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 395}
396
397/* Return whether a symbol name implies a local label. The UnixWare
398 2.1 cc generates temporary symbols that start with .X, so we
399 recognize them here. FIXME: do other SVR4 compilers also use .X?.
400 If so, we should move the .X recognition into
401 _bfd_elf_is_local_label_name. */
402
b34976b6 403static bfd_boolean
55fd94b0 404elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 405{
406 if (name[0] == '.' && name[1] == 'X')
b34976b6 407 return TRUE;
252b5132
RH		 408
409 return _bfd_elf_is_local_label_name (abfd, name);
410}
411\f
38701953 412/* Support for core dump NOTE sections. */
61adc1a4 413
b34976b6 414static bfd_boolean
55fd94b0 415elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 416{
417 int offset;
eea6121a 418 size_t size;
38701953 419
61adc1a4 420 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 421 {
61adc1a4
NC		 422 int pr_version = bfd_get_32 (abfd, note->descdata);
423
424 if (pr_version != 1)
425 return FALSE;
426
427 /* pr_cursig */
228e534f 428 elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20);
61adc1a4
NC		 429
430 /* pr_pid */
228e534f 431 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 432
433 /* pr_reg */
434 offset = 28;
eea6121a 435 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 436 }
437 else
438 {
439 switch (note->descsz)
440 {
441 default:
442 return FALSE;
38701953 443
61adc1a4
NC		 444 case 144: /* Linux/i386 */
445 /* pr_cursig */
228e534f 446 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 447
61adc1a4 448 /* pr_pid */
228e534f 449 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 450
61adc1a4
NC		 451 /* pr_reg */
452 offset = 72;
eea6121a 453 size = 68;
38701953 454
61adc1a4
NC		 455 break;
456 }
38701953
AM		 457 }
458
459 /* Make a ".reg/999" section. */
460 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 461 size, note->descpos + offset);
38701953
AM		 462}
463
b34976b6 464static bfd_boolean
55fd94b0 465elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 466{
61adc1a4 467 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 468 {
61adc1a4
NC		 469 int pr_version = bfd_get_32 (abfd, note->descdata);
470
471 if (pr_version != 1)
b34976b6 472 return FALSE;
38701953 473
228e534f 474 elf_tdata (abfd)->core->program
61adc1a4 475 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
228e534f 476 elf_tdata (abfd)->core->command
61adc1a4
NC		 477 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
478 }
479 else
480 {
481 switch (note->descsz)
482 {
483 default:
484 return FALSE;
485
486 case 124: /* Linux/i386 elf_prpsinfo. */
228e534f 487 elf_tdata (abfd)->core->pid
261b8d08 488 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 489 elf_tdata (abfd)->core->program
61adc1a4 490 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 491 elf_tdata (abfd)->core->command
61adc1a4
NC		 492 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
493 }
38701953
AM		 494 }
495
496 /* Note that for some reason, a spurious space is tacked
497 onto the end of the args in some (at least one anyway)
498 implementations, so strip it off if it exists. */
38701953 499 {
228e534f 500 char *command = elf_tdata (abfd)->core->command;
38701953
AM		 501 int n = strlen (command);
502
503 if (0 < n && command[n - 1] == ' ')
504 command[n - 1] = '\0';
505 }
506
b34976b6 507 return TRUE;
38701953
AM		 508}
509\f
510/* Functions for the i386 ELF linker.
511
512 In order to gain some understanding of code in this file without
513 knowing all the intricate details of the linker, note the
514 following:
515
516 Functions named elf_i386_* are called by external routines, other
517 functions are only called locally. elf_i386_* functions appear
518 in this file more or less in the order in which they are called
519 from external routines. eg. elf_i386_check_relocs is called
520 early in the link process, elf_i386_finish_dynamic_sections is
521 one of the last functions. */
522
252b5132
RH		 523
524/* The name of the dynamic interpreter. This is put in the .interp
525 section. */
526
527#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
528
a23b6845
AM		 529/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
530 copying dynamic variables from a shared lib into an app's dynbss
531 section, and instead use a dynamic relocation to point into the
532 shared lib. */
533#define ELIMINATE_COPY_RELOCS 1
534
252b5132
RH		 535/* The size in bytes of an entry in the procedure linkage table. */
536
537#define PLT_ENTRY_SIZE 16
538
539/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 540 this. See the SVR4 ABI i386 supplement to see how this works.
541 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 542
eac338cf 543static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 544{
545 0xff, 0x35, /* pushl contents of address */
546 0, 0, 0, 0, /* replaced with address of .got + 4. */
547 0xff, 0x25, /* jmp indirect */
eac338cf 548 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 549};
550
551/* Subsequent entries in an absolute procedure linkage table look like
552 this. */
553
554static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
555{
556 0xff, 0x25, /* jmp indirect */
557 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
558 0x68, /* pushl immediate */
559 0, 0, 0, 0, /* replaced with offset into relocation table. */
560 0xe9, /* jmp relative */
561 0, 0, 0, 0 /* replaced with offset to start of .plt. */
562};
563
eac338cf
PB		 564/* The first entry in a PIC procedure linkage table look like this.
565 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 566
eac338cf 567static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 568{
569 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 570 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 571};
572
573/* Subsequent entries in a PIC procedure linkage table look like this. */
574
575static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
576{
577 0xff, 0xa3, /* jmp *offset(%ebx) */
578 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
579 0x68, /* pushl immediate */
580 0, 0, 0, 0, /* replaced with offset into relocation table. */
581 0xe9, /* jmp relative */
582 0, 0, 0, 0 /* replaced with offset to start of .plt. */
583};
584
dd7e64d4
L		 585/* Entries in the GOT procedure linkage table look like this. */
586
587static const bfd_byte elf_i386_got_plt_entry[8] =
588{
589 0xff, 0x25, /* jmp indirect */
590 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
591 0x66, 0x90 /* xchg %ax,%ax */
592};
593
594/* Entries in the PIC GOT procedure linkage table look like this. */
595
596static const bfd_byte elf_i386_pic_got_plt_entry[8] =
597{
598 0xff, 0xa3, /* jmp *offset(%ebx) */
599 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
600 0x66, 0x90 /* xchg %ax,%ax */
601};
602
e41b3a13
JJ		 603/* .eh_frame covering the .plt section. */
604
605static const bfd_byte elf_i386_eh_frame_plt[] =
606{
607#define PLT_CIE_LENGTH 20
608#define PLT_FDE_LENGTH 36
609#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
610#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
611 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
612 0, 0, 0, 0, /* CIE ID */
613 1, /* CIE version */
614 'z', 'R', 0, /* Augmentation string */
615 1, /* Code alignment factor */
616 0x7c, /* Data alignment factor */
617 8, /* Return address column */
618 1, /* Augmentation size */
619 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
620 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
621 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
622 DW_CFA_nop, DW_CFA_nop,
623
624 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
625 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
626 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
627 0, 0, 0, 0, /* .plt size goes here */
628 0, /* Augmentation size */
629 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
630 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
631 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
632 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
633 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
634 11, /* Block length */
635 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
636 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
637 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 638 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ		 639 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
640};
641
25e762b9
RM		 642struct elf_i386_plt_layout
643{
644 /* The first entry in an absolute procedure linkage table looks like this. */
645 const bfd_byte *plt0_entry;
646 unsigned int plt0_entry_size;
647
648 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
649 unsigned int plt0_got1_offset;
650 unsigned int plt0_got2_offset;
651
652 /* Later entries in an absolute procedure linkage table look like this. */
653 const bfd_byte *plt_entry;
654 unsigned int plt_entry_size;
655
656 /* Offsets into plt_entry that are to be replaced with... */
657 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
658 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
659 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
660
661 /* Offset into plt_entry where the initial value of the GOT entry points. */
662 unsigned int plt_lazy_offset;
663
664 /* The first entry in a PIC procedure linkage table looks like this. */
665 const bfd_byte *pic_plt0_entry;
666
667 /* Subsequent entries in a PIC procedure linkage table look like this. */
668 const bfd_byte *pic_plt_entry;
669
670 /* .eh_frame covering the .plt section. */
671 const bfd_byte *eh_frame_plt;
672 unsigned int eh_frame_plt_size;
673};
674
675#define GET_PLT_ENTRY_SIZE(abfd) \
676 get_elf_i386_backend_data (abfd)->plt->plt_entry_size
677
678/* These are the standard parameters. */
679static const struct elf_i386_plt_layout elf_i386_plt =
680 {
681 elf_i386_plt0_entry, /* plt0_entry */
682 sizeof (elf_i386_plt0_entry), /* plt0_entry_size */
683 2, /* plt0_got1_offset */
684 8, /* plt0_got2_offset */
685 elf_i386_plt_entry, /* plt_entry */
686 PLT_ENTRY_SIZE, /* plt_entry_size */
687 2, /* plt_got_offset */
688 7, /* plt_reloc_offset */
689 12, /* plt_plt_offset */
690 6, /* plt_lazy_offset */
691 elf_i386_pic_plt0_entry, /* pic_plt0_entry */
692 elf_i386_pic_plt_entry, /* pic_plt_entry */
693 elf_i386_eh_frame_plt, /* eh_frame_plt */
694 sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */
695 };
696\f
697
eac338cf
PB		 698/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
699 for the PLTResolve stub and then for each PLT entry. */
700#define PLTRESOLVE_RELOCS_SHLIB 0
701#define PLTRESOLVE_RELOCS 2
702#define PLT_NON_JUMP_SLOT_RELOCS 2
703
23209a78
RM		 704/* Architecture-specific backend data for i386. */
705
706struct elf_i386_backend_data
707{
25e762b9
RM		 708 /* Parameters describing PLT generation. */
709 const struct elf_i386_plt_layout *plt;
710
23209a78
RM		 711 /* Value used to fill the unused bytes of the first PLT entry. */
712 bfd_byte plt0_pad_byte;
713
714 /* True if the target system is VxWorks. */
715 int is_vxworks;
716};
717
718#define get_elf_i386_backend_data(abfd) \
719 ((const struct elf_i386_backend_data *) \
720 get_elf_backend_data (abfd)->arch_data)
721
722/* These are the standard parameters. */
723static const struct elf_i386_backend_data elf_i386_arch_bed =
724 {
25e762b9 725 &elf_i386_plt, /* plt */
23209a78
RM		 726 0, /* plt0_pad_byte */
727 0, /* is_vxworks */
728 };
729
730#define elf_backend_arch_data &elf_i386_arch_bed
731
252b5132
RH		 732/* i386 ELF linker hash entry. */
733
734struct elf_i386_link_hash_entry
735{
ebe50bae 736 struct elf_link_hash_entry elf;
252b5132 737
0c715baa 738 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 739 struct elf_dyn_relocs *dyn_relocs;
13ae64f3 740
37e55690
JJ		 741#define GOT_UNKNOWN 0
742#define GOT_NORMAL 1
743#define GOT_TLS_GD 2
744#define GOT_TLS_IE 4
745#define GOT_TLS_IE_POS 5
746#define GOT_TLS_IE_NEG 6
747#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO		 748#define GOT_TLS_GDESC 8
749#define GOT_TLS_GD_BOTH_P(type) \
750 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
751#define GOT_TLS_GD_P(type) \
752 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
753#define GOT_TLS_GDESC_P(type) \
754 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
755#define GOT_TLS_GD_ANY_P(type) \
756 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 757 unsigned char tls_type;
67a4f2b7 758
d5597ebc
L		 759 /* Symbol is referenced by R_386_GOTOFF relocation. */
760 unsigned int gotoff_ref : 1;
761
dd7e64d4
L		 762 /* Information about the GOT PLT entry. Filled when there are both
763 GOT and PLT relocations against the same function. */
764 union gotplt_union plt_got;
765
67a4f2b7
AO		 766 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
767 starting at the end of the jump table. */
768 bfd_vma tlsdesc_got;
13ae64f3
JJ		 769};
770
771#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
772
773struct elf_i386_obj_tdata
774{
775 struct elf_obj_tdata root;
776
777 /* tls_type for each local got entry. */
778 char *local_got_tls_type;
67a4f2b7
AO		 779
780 /* GOTPLT entries for TLS descriptors. */
781 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 782};
783
13ae64f3
JJ		 784#define elf_i386_tdata(abfd) \
785 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
786
787#define elf_i386_local_got_tls_type(abfd) \
788 (elf_i386_tdata (abfd)->local_got_tls_type)
789
67a4f2b7
AO		 790#define elf_i386_local_tlsdesc_gotent(abfd) \
791 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
792
0ffa91dd
NC		 793#define is_i386_elf(bfd) \
794 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
795 && elf_tdata (bfd) != NULL \
4dfe6ac6 796 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 797
b34976b6 798static bfd_boolean
55fd94b0 799elf_i386_mkobject (bfd *abfd)
13ae64f3 800{
0ffa91dd 801 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 802 I386_ELF_DATA);
13ae64f3 803}
cedb70c5 804
252b5132
RH		 805/* i386 ELF linker hash table. */
806
807struct elf_i386_link_hash_table
808{
ebe50bae 809 struct elf_link_hash_table elf;
252b5132 810
6725bdbf 811 /* Short-cuts to get to dynamic linker sections. */
6725bdbf
AM		 812 asection *sdynbss;
813 asection *srelbss;
e41b3a13 814 asection *plt_eh_frame;
dd7e64d4 815 asection *plt_got;
9635fe29 816
4dfe6ac6
NC		 817 union
818 {
13ae64f3
JJ		 819 bfd_signed_vma refcount;
820 bfd_vma offset;
821 } tls_ldm_got;
822
67a4f2b7
AO		 823 /* The amount of space used by the reserved portion of the sgotplt
824 section, plus whatever space is used by the jump slots. */
825 bfd_vma sgotplt_jump_table_size;
826
87d72d41
AM		 827 /* Small local sym cache. */
828 struct sym_cache sym_cache;
9f03412a
AO		 829
830 /* _TLS_MODULE_BASE_ symbol. */
831 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 832
833 /* Used by local STT_GNU_IFUNC symbols. */
834 htab_t loc_hash_table;
4dfe6ac6
NC		 835 void * loc_hash_memory;
836
837 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
838 asection *srelplt2;
839
4dfe6ac6
NC		 840 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
841 bfd_vma next_tls_desc_index;
e1f98742
L		 842
843 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
844 bfd_vma next_jump_slot_index;
845
846 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
847 bfd_vma next_irelative_index;
6725bdbf 848};
252b5132
RH		 849
850/* Get the i386 ELF linker hash table from a link_info structure. */
851
852#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 853 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
854 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 855
67a4f2b7 856#define elf_i386_compute_jump_table_size(htab) \
998d811a 857 ((htab)->elf.srelplt->reloc_count * 4)
67a4f2b7 858
252b5132
RH		 859/* Create an entry in an i386 ELF linker hash table. */
860
861static struct bfd_hash_entry *
eb4ff4d6
L		 862elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
863 struct bfd_hash_table *table,
864 const char *string)
252b5132 865{
252b5132
RH		 866 /* Allocate the structure if it has not already been allocated by a
867 subclass. */
ebe50bae
AM		 868 if (entry == NULL)
869 {
a50b1753
NC		 870 entry = (struct bfd_hash_entry *)
871 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 872 if (entry == NULL)
873 return entry;
874 }
252b5132
RH		 875
876 /* Call the allocation method of the superclass. */
ebe50bae
AM		 877 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
878 if (entry != NULL)
252b5132 879 {
ebe50bae
AM		 880 struct elf_i386_link_hash_entry *eh;
881
882 eh = (struct elf_i386_link_hash_entry *) entry;
883 eh->dyn_relocs = NULL;
13ae64f3 884 eh->tls_type = GOT_UNKNOWN;
d5597ebc 885 eh->gotoff_ref = 0;
dd7e64d4 886 eh->plt_got.offset = (bfd_vma) -1;
67a4f2b7 887 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 888 }
889
ebe50bae 890 return entry;
252b5132
RH		 891}
892
c25bc9fc
L		 893/* Compute a hash of a local hash entry. We use elf_link_hash_entry
894 for local symbol so that we can handle local STT_GNU_IFUNC symbols
895 as global symbol. We reuse indx and dynstr_index for local symbol
896 hash since they aren't used by global symbols in this backend. */
897
898static hashval_t
899elf_i386_local_htab_hash (const void *ptr)
900{
901 struct elf_link_hash_entry *h
902 = (struct elf_link_hash_entry *) ptr;
d2149d72 903 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 904}
905
906/* Compare local hash entries. */
907
908static int
909elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
910{
911 struct elf_link_hash_entry *h1
912 = (struct elf_link_hash_entry *) ptr1;
913 struct elf_link_hash_entry *h2
914 = (struct elf_link_hash_entry *) ptr2;
915
916 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
917}
918
919/* Find and/or create a hash entry for local symbol. */
920
921static struct elf_link_hash_entry *
922elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
923 bfd *abfd, const Elf_Internal_Rela *rel,
924 bfd_boolean create)
925{
926 struct elf_i386_link_hash_entry e, *ret;
927 asection *sec = abfd->sections;
d2149d72
L		 928 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
929 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 930 void **slot;
931
932 e.elf.indx = sec->id;
933 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
934 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
935 create ? INSERT : NO_INSERT);
936
937 if (!slot)
938 return NULL;
939
940 if (*slot)
941 {
942 ret = (struct elf_i386_link_hash_entry *) *slot;
943 return &ret->elf;
944 }
945
946 ret = (struct elf_i386_link_hash_entry *)
947 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
948 sizeof (struct elf_i386_link_hash_entry));
949 if (ret)
950 {
951 memset (ret, 0, sizeof (*ret));
952 ret->elf.indx = sec->id;
953 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
954 ret->elf.dynindx = -1;
dd7e64d4 955 ret->plt_got.offset = (bfd_vma) -1;
c25bc9fc
L		 956 *slot = ret;
957 }
958 return &ret->elf;
959}
960
68faa637
AM		 961/* Destroy an i386 ELF linker hash table. */
962
963static void
d495ab0d 964elf_i386_link_hash_table_free (bfd *obfd)
68faa637
AM		 965{
966 struct elf_i386_link_hash_table *htab
d495ab0d 967 = (struct elf_i386_link_hash_table *) obfd->link.hash;
68faa637
AM		 968
969 if (htab->loc_hash_table)
970 htab_delete (htab->loc_hash_table);
971 if (htab->loc_hash_memory)
972 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
d495ab0d 973 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 974}
975
252b5132
RH		 976/* Create an i386 ELF linker hash table. */
977
978static struct bfd_link_hash_table *
55fd94b0 979elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 980{
981 struct elf_i386_link_hash_table *ret;
dc810e39 982 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 983
7bf52ea2 984 ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt);
ebe50bae 985 if (ret == NULL)
252b5132
RH		 986 return NULL;
987
eb4ff4d6
L		 988 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
989 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 990 sizeof (struct elf_i386_link_hash_entry),
991 I386_ELF_DATA))
252b5132 992 {
e2d34d7d 993 free (ret);
252b5132
RH		 994 return NULL;
995 }
996
c25bc9fc
L		 997 ret->loc_hash_table = htab_try_create (1024,
998 elf_i386_local_htab_hash,
999 elf_i386_local_htab_eq,
1000 NULL);
1001 ret->loc_hash_memory = objalloc_create ();
1002 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1003 {
d495ab0d 1004 elf_i386_link_hash_table_free (abfd);
c25bc9fc
L		 1005 return NULL;
1006 }
d495ab0d 1007 ret->elf.root.hash_table_free = elf_i386_link_hash_table_free;
c25bc9fc 1008
ebe50bae 1009 return &ret->elf.root;
252b5132
RH		 1010}
1011
6725bdbf
AM		 1012/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
1013 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
1014 hash table. */
1015
b34976b6 1016static bfd_boolean
55fd94b0 1017elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 1018{
1019 struct elf_i386_link_hash_table *htab;
1020
6725bdbf 1021 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 1022 return FALSE;
6725bdbf 1023
6de2ae4a 1024 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1025 if (htab == NULL)
1026 return FALSE;
1027
3d4d4302 1028 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
d5597ebc 1029 if (!htab->sdynbss)
6725bdbf
AM		 1030 abort ();
1031
d5597ebc
L		 1032 if (info->executable)
1033 {
1034 /* Always allow copy relocs for building executables. */
1035 asection *s = bfd_get_linker_section (dynobj, ".rel.bss");
1036 if (s == NULL)
1037 {
1038 const struct elf_backend_data *bed = get_elf_backend_data (dynobj);
1039 s = bfd_make_section_anyway_with_flags (dynobj,
1040 ".rel.bss",
1041 (bed->dynamic_sec_flags
1042 | SEC_READONLY));
1043 if (s == NULL
1044 || ! bfd_set_section_alignment (dynobj, s,
1045 bed->s->log_file_align))
1046 return FALSE;
1047 }
1048 htab->srelbss = s;
1049 }
1050
23209a78 1051 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1052 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1053 &htab->srelplt2))
711de32c 1054 return FALSE;
eac338cf 1055
e41b3a13 1056 if (!info->no_ld_generated_unwind_info
2fe0fd06 1057 && htab->plt_eh_frame == NULL
e4de50d4 1058 && htab->elf.splt != NULL)
e41b3a13 1059 {
bbf96e4e
L		 1060 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1061 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1062 | SEC_LINKER_CREATED);
e41b3a13 1063 htab->plt_eh_frame
bbf96e4e 1064 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ		 1065 if (htab->plt_eh_frame == NULL
1066 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1067 return FALSE;
e41b3a13
JJ		 1068 }
1069
b34976b6 1070 return TRUE;
6725bdbf
AM		 1071}
1072
ebe50bae
AM		 1073/* Copy the extra info we tack onto an elf_link_hash_entry. */
1074
51b64d56 1075static void
fcfa13d2 1076elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1077 struct elf_link_hash_entry *dir,
1078 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1079{
1080 struct elf_i386_link_hash_entry *edir, *eind;
1081
1082 edir = (struct elf_i386_link_hash_entry *) dir;
1083 eind = (struct elf_i386_link_hash_entry *) ind;
1084
bbd7ec4a 1085 if (eind->dyn_relocs != NULL)
ebe50bae 1086 {
bbd7ec4a
AM		 1087 if (edir->dyn_relocs != NULL)
1088 {
e03a8ed8
L		 1089 struct elf_dyn_relocs **pp;
1090 struct elf_dyn_relocs *p;
bbd7ec4a 1091
fcfa13d2 1092 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1093 list. Merge any entries against the same section. */
1094 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1095 {
e03a8ed8 1096 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1097
1098 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1099 if (q->sec == p->sec)
1100 {
1101 q->pc_count += p->pc_count;
1102 q->count += p->count;
1103 *pp = p->next;
1104 break;
1105 }
1106 if (q == NULL)
1107 pp = &p->next;
1108 }
1109 *pp = edir->dyn_relocs;
1110 }
1111
ebe50bae
AM		 1112 edir->dyn_relocs = eind->dyn_relocs;
1113 eind->dyn_relocs = NULL;
1114 }
ebe50bae 1115
cd67d266
JJ		 1116 if (ind->root.type == bfd_link_hash_indirect
1117 && dir->got.refcount <= 0)
1118 {
1119 edir->tls_type = eind->tls_type;
1120 eind->tls_type = GOT_UNKNOWN;
1121 }
81848ca0 1122
d5597ebc
L		 1123 /* Copy gotoff_ref so that elf_i386_adjust_dynamic_symbol will
1124 generate a R_386_COPY reloc. */
1125 edir->gotoff_ref |= eind->gotoff_ref;
1126
81848ca0
AM		 1127 if (ELIMINATE_COPY_RELOCS
1128 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1129 && dir->dynamic_adjusted)
1130 {
1131 /* If called to transfer flags for a weakdef during processing
1132 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1133 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1134 dir->ref_dynamic |= ind->ref_dynamic;
1135 dir->ref_regular |= ind->ref_regular;
1136 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1137 dir->needs_plt |= ind->needs_plt;
1138 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1139 }
81848ca0 1140 else
fcfa13d2 1141 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
ebe50bae
AM		 1142}
1143
142411ca
L		 1144/* Return TRUE if the TLS access code sequence support transition
1145 from R_TYPE. */
1146
1147static bfd_boolean
1148elf_i386_check_tls_transition (bfd *abfd, asection *sec,
1149 bfd_byte *contents,
1150 Elf_Internal_Shdr *symtab_hdr,
1151 struct elf_link_hash_entry **sym_hashes,
1152 unsigned int r_type,
1153 const Elf_Internal_Rela *rel,
1154 const Elf_Internal_Rela *relend)
13ae64f3 1155{
142411ca
L		 1156 unsigned int val, type;
1157 unsigned long r_symndx;
1158 struct elf_link_hash_entry *h;
1159 bfd_vma offset;
1160
1161 /* Get the section contents. */
1162 if (contents == NULL)
1163 {
1164 if (elf_section_data (sec)->this_hdr.contents != NULL)
1165 contents = elf_section_data (sec)->this_hdr.contents;
1166 else
1167 {
1168 /* FIXME: How to better handle error condition? */
1169 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1170 return FALSE;
13ae64f3 1171
142411ca
L		 1172 /* Cache the section contents for elf_link_input_bfd. */
1173 elf_section_data (sec)->this_hdr.contents = contents;
1174 }
1175 }
1176
1177 offset = rel->r_offset;
13ae64f3 1178 switch (r_type)
142411ca
L		 1179 {
1180 case R_386_TLS_GD:
1181 case R_386_TLS_LDM:
1182 if (offset < 2 || (rel + 1) >= relend)
1183 return FALSE;
1184
1185 type = bfd_get_8 (abfd, contents + offset - 2);
1186 if (r_type == R_386_TLS_GD)
1187 {
09e8c3bf 1188 /* Check transition from GD access model. Only
142411ca
L		 1189 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1190 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1191 can transit to different access model. */
1192 if ((offset + 10) > sec->size ||
1193 (type != 0x8d && type != 0x04))
1194 return FALSE;
1195
1196 val = bfd_get_8 (abfd, contents + offset - 1);
1197 if (type == 0x04)
1198 {
1199 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1200 if (offset < 3)
1201 return FALSE;
1202
1203 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1204 return FALSE;
1205
1206 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1207 return FALSE;
1208 }
1209 else
1210 {
1211 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1212 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1213 return FALSE;
1214
1215 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1216 return FALSE;
1217 }
1218 }
1219 else
1220 {
1221 /* Check transition from LD access model. Only
1222 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1223 can transit to different access model. */
1224 if (type != 0x8d || (offset + 9) > sec->size)
1225 return FALSE;
1226
1227 val = bfd_get_8 (abfd, contents + offset - 1);
1228 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1229 return FALSE;
1230 }
1231
1232 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1233 return FALSE;
1234
1235 r_symndx = ELF32_R_SYM (rel[1].r_info);
1236 if (r_symndx < symtab_hdr->sh_info)
1237 return FALSE;
1238
1239 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b
L		 1240 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1241 may be versioned. */
142411ca
L		 1242 return (h != NULL
1243 && h->root.root.string != NULL
1244 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1245 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
c4fb387b
L		 1246 && (strncmp (h->root.root.string, "___tls_get_addr",
1247 15) == 0));
142411ca
L		 1248
1249 case R_386_TLS_IE:
1250 /* Check transition from IE access model:
1251 movl foo@indntpoff(%rip), %eax
1252 movl foo@indntpoff(%rip), %reg
1253 addl foo@indntpoff(%rip), %reg
1254 */
1255
1256 if (offset < 1 || (offset + 4) > sec->size)
1257 return FALSE;
1258
1259 /* Check "movl foo@tpoff(%rip), %eax" first. */
1260 val = bfd_get_8 (abfd, contents + offset - 1);
1261 if (val == 0xa1)
1262 return TRUE;
1263
1264 if (offset < 2)
1265 return FALSE;
1266
1267 /* Check movl|addl foo@tpoff(%rip), %reg. */
1268 type = bfd_get_8 (abfd, contents + offset - 2);
1269 return ((type == 0x8b || type == 0x03)
1270 && (val & 0xc7) == 0x05);
1271
1272 case R_386_TLS_GOTIE:
1273 case R_386_TLS_IE_32:
1274 /* Check transition from {IE_32,GOTIE} access model:
1275 subl foo@{tpoff,gontoff}(%reg1), %reg2
1276 movl foo@{tpoff,gontoff}(%reg1), %reg2
1277 addl foo@{tpoff,gontoff}(%reg1), %reg2
1278 */
1279
1280 if (offset < 2 || (offset + 4) > sec->size)
1281 return FALSE;
1282
1283 val = bfd_get_8 (abfd, contents + offset - 1);
1284 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1285 return FALSE;
1286
1287 type = bfd_get_8 (abfd, contents + offset - 2);
1288 return type == 0x8b || type == 0x2b || type == 0x03;
1289
1290 case R_386_TLS_GOTDESC:
1291 /* Check transition from GDesc access model:
1292 leal x@tlsdesc(%ebx), %eax
1293
1294 Make sure it's a leal adding ebx to a 32-bit offset
1295 into any register, although it's probably almost always
1296 going to be eax. */
1297
1298 if (offset < 2 || (offset + 4) > sec->size)
1299 return FALSE;
1300
1301 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1302 return FALSE;
1303
1304 val = bfd_get_8 (abfd, contents + offset - 1);
1305 return (val & 0xc7) == 0x83;
1306
1307 case R_386_TLS_DESC_CALL:
1308 /* Check transition from GDesc access model:
1309 call *x@tlsdesc(%rax)
1310 */
1311 if (offset + 2 <= sec->size)
1312 {
1313 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM		 1314 static const unsigned char call[] = { 0xff, 0x10 };
1315 return memcmp (contents + offset, call, 2) == 0;
142411ca
L		 1316 }
1317
1318 return FALSE;
1319
1320 default:
1321 abort ();
1322 }
1323}
1324
1325/* Return TRUE if the TLS access transition is OK or no transition
1326 will be performed. Update R_TYPE if there is a transition. */
1327
1328static bfd_boolean
1329elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1330 asection *sec, bfd_byte *contents,
1331 Elf_Internal_Shdr *symtab_hdr,
1332 struct elf_link_hash_entry **sym_hashes,
1333 unsigned int *r_type, int tls_type,
1334 const Elf_Internal_Rela *rel,
1335 const Elf_Internal_Rela *relend,
4c544807
L		 1336 struct elf_link_hash_entry *h,
1337 unsigned long r_symndx)
142411ca
L		 1338{
1339 unsigned int from_type = *r_type;
1340 unsigned int to_type = from_type;
1341 bfd_boolean check = TRUE;
1342
bb1cb422
L		 1343 /* Skip TLS transition for functions. */
1344 if (h != NULL
1345 && (h->type == STT_FUNC
1346 || h->type == STT_GNU_IFUNC))
1347 return TRUE;
1348
142411ca 1349 switch (from_type)
13ae64f3
JJ		 1350 {
1351 case R_386_TLS_GD:
67a4f2b7
AO		 1352 case R_386_TLS_GOTDESC:
1353 case R_386_TLS_DESC_CALL:
13ae64f3 1354 case R_386_TLS_IE_32:
37e55690
JJ		 1355 case R_386_TLS_IE:
1356 case R_386_TLS_GOTIE:
1d85728f 1357 if (info->executable)
142411ca
L		 1358 {
1359 if (h == NULL)
1360 to_type = R_386_TLS_LE_32;
1361 else if (from_type != R_386_TLS_IE
1362 && from_type != R_386_TLS_GOTIE)
1363 to_type = R_386_TLS_IE_32;
1364 }
1365
1366 /* When we are called from elf_i386_relocate_section, CONTENTS
1367 isn't NULL and there may be additional transitions based on
1368 TLS_TYPE. */
1369 if (contents != NULL)
1370 {
1371 unsigned int new_to_type = to_type;
1372
1d85728f 1373 if (info->executable
142411ca
L		 1374 && h != NULL
1375 && h->dynindx == -1
1376 && (tls_type & GOT_TLS_IE))
1377 new_to_type = R_386_TLS_LE_32;
1378
1379 if (to_type == R_386_TLS_GD
1380 || to_type == R_386_TLS_GOTDESC
1381 || to_type == R_386_TLS_DESC_CALL)
1382 {
1383 if (tls_type == GOT_TLS_IE_POS)
1384 new_to_type = R_386_TLS_GOTIE;
1385 else if (tls_type & GOT_TLS_IE)
1386 new_to_type = R_386_TLS_IE_32;
1387 }
1388
1389 /* We checked the transition before when we were called from
1390 elf_i386_check_relocs. We only want to check the new
1391 transition which hasn't been checked before. */
1392 check = new_to_type != to_type && from_type == to_type;
1393 to_type = new_to_type;
1394 }
1395
1396 break;
1397
13ae64f3 1398 case R_386_TLS_LDM:
1d85728f 1399 if (info->executable)
142411ca
L		 1400 to_type = R_386_TLS_LE_32;
1401 break;
1402
1403 default:
1404 return TRUE;
1405 }
1406
1407 /* Return TRUE if there is no transition. */
1408 if (from_type == to_type)
1409 return TRUE;
1410
1411 /* Check if the transition can be performed. */
1412 if (check
1413 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1414 symtab_hdr, sym_hashes,
1415 from_type, rel, relend))
1416 {
2f629d23 1417 reloc_howto_type *from, *to;
4c544807 1418 const char *name;
142411ca
L		 1419
1420 from = elf_i386_rtype_to_howto (abfd, from_type);
1421 to = elf_i386_rtype_to_howto (abfd, to_type);
1422
4c544807
L		 1423 if (h)
1424 name = h->root.root.string;
1425 else
1426 {
4c544807 1427 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1428
4c544807 1429 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1430 if (htab == NULL)
1431 name = "*unknown*";
1432 else
1433 {
1434 Elf_Internal_Sym *isym;
1435
1436 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1437 abfd, r_symndx);
1438 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1439 }
4c544807
L		 1440 }
1441
142411ca
L		 1442 (*_bfd_error_handler)
1443 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1444 "in section `%A' failed"),
4c544807 1445 abfd, sec, from->name, to->name, name,
142411ca
L		 1446 (unsigned long) rel->r_offset);
1447 bfd_set_error (bfd_error_bad_value);
1448 return FALSE;
13ae64f3
JJ		 1449 }
1450
142411ca
L		 1451 *r_type = to_type;
1452 return TRUE;
13ae64f3
JJ		 1453}
1454
c1d11331
L		 1455/* Rename some of the generic section flags to better document how they
1456 are used here. */
1457#define need_convert_mov_to_lea sec_flg0
1458
252b5132 1459/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1460 calculate needed space in the global offset table, procedure linkage
1461 table, and dynamic reloc sections. */
252b5132 1462
b34976b6 1463static bfd_boolean
55fd94b0
AM		 1464elf_i386_check_relocs (bfd *abfd,
1465 struct bfd_link_info *info,
1466 asection *sec,
1467 const Elf_Internal_Rela *relocs)
252b5132 1468{
6725bdbf 1469 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1470 Elf_Internal_Shdr *symtab_hdr;
1471 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1472 const Elf_Internal_Rela *rel;
1473 const Elf_Internal_Rela *rel_end;
252b5132 1474 asection *sreloc;
dd7e64d4 1475 bfd_boolean use_plt_got;
252b5132 1476
1049f94e 1477 if (info->relocatable)
b34976b6 1478 return TRUE;
252b5132 1479
0ffa91dd
NC		 1480 BFD_ASSERT (is_i386_elf (abfd));
1481
6725bdbf 1482 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1483 if (htab == NULL)
1484 return FALSE;
1485
dd7e64d4
L		 1486 use_plt_got = (!get_elf_i386_backend_data (abfd)->is_vxworks
1487 && (get_elf_i386_backend_data (abfd)
1488 == &elf_i386_arch_bed));
1489
0ffa91dd 1490 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1491 sym_hashes = elf_sym_hashes (abfd);
252b5132 1492
252b5132
RH		 1493 sreloc = NULL;
1494
1495 rel_end = relocs + sec->reloc_count;
1496 for (rel = relocs; rel < rel_end; rel++)
1497 {
13ae64f3 1498 unsigned int r_type;
252b5132
RH		 1499 unsigned long r_symndx;
1500 struct elf_link_hash_entry *h;
d5597ebc 1501 struct elf_i386_link_hash_entry *eh;
4c544807
L		 1502 Elf_Internal_Sym *isym;
1503 const char *name;
06a6a421 1504 bfd_boolean size_reloc;
252b5132
RH		 1505
1506 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1507 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1508
d9bc7a44 1509 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1510 {
d003868e
AM		 1511 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1512 abfd,
8f615d07 1513 r_symndx);
b34976b6 1514 return FALSE;
f5f31454
L		 1515 }
1516
252b5132 1517 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1518 {
1519 /* A local symbol. */
c2e61a4e
L		 1520 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1521 abfd, r_symndx);
1522 if (isym == NULL)
1523 return FALSE;
c25bc9fc
L		 1524
1525 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1526 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1527 {
9fff0c39 1528 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1529 if (h == NULL)
c2e61a4e 1530 return FALSE;
6bbec505 1531
c25bc9fc
L		 1532 /* Fake a STT_GNU_IFUNC symbol. */
1533 h->type = STT_GNU_IFUNC;
1534 h->def_regular = 1;
1535 h->ref_regular = 1;
1536 h->forced_local = 1;
1537 h->root.type = bfd_link_hash_defined;
1538 }
1539 else
1540 h = NULL;
1541 }
252b5132 1542 else
71cb9464 1543 {
4c544807 1544 isym = NULL;
71cb9464
L		 1545 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1546 while (h->root.type == bfd_link_hash_indirect
1547 || h->root.type == bfd_link_hash_warning)
1548 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1549 }
cbe950e9 1550
d5597ebc 1551 eh = (struct elf_i386_link_hash_entry *) h;
c25bc9fc
L		 1552 if (h != NULL)
1553 {
cbe950e9
L		 1554 /* Create the ifunc sections for static executables. If we
1555 never see an indirect function symbol nor we are building
1556 a static executable, those sections will be empty and
1557 won't appear in output. */
1558 switch (r_type)
1559 {
1560 default:
1561 break;
1562
d5597ebc
L		 1563 case R_386_GOTOFF:
1564 eh->gotoff_ref = 1;
cbe950e9
L		 1565 case R_386_32:
1566 case R_386_PC32:
1567 case R_386_PLT32:
1568 case R_386_GOT32:
9d4057ee
AM		 1569 if (htab->elf.dynobj == NULL)
1570 htab->elf.dynobj = abfd;
1571 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1572 return FALSE;
cbe950e9
L		 1573 break;
1574 }
1575
ad1e85de
L		 1576 /* It is referenced by a non-shared object. */
1577 h->ref_regular = 1;
61315175 1578 h->root.non_ir_ref = 1;
13a2df29
L		 1579
1580 if (h->type == STT_GNU_IFUNC)
1581 elf_tdata (info->output_bfd)->has_gnu_symbols
1582 |= elf_gnu_symbol_ifunc;
71cb9464 1583 }
252b5132 1584
142411ca
L		 1585 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1586 symtab_hdr, sym_hashes,
1587 &r_type, GOT_UNKNOWN,
23209a78 1588 rel, rel_end, h, r_symndx))
c2e61a4e 1589 return FALSE;
13ae64f3
JJ		 1590
1591 switch (r_type)
252b5132 1592 {
37e55690
JJ		 1593 case R_386_TLS_LDM:
1594 htab->tls_ldm_got.refcount += 1;
1595 goto create_got;
1596
1597 case R_386_PLT32:
1598 /* This symbol requires a procedure linkage table entry. We
1599 actually build the entry in adjust_dynamic_symbol,
1600 because this might be a case of linking PIC code which is
1601 never referenced by a dynamic object, in which case we
1602 don't need to generate a procedure linkage table entry
1603 after all. */
1604
1605 /* If this is a local symbol, we resolve it directly without
1606 creating a procedure linkage table entry. */
1607 if (h == NULL)
1608 continue;
1609
f5385ebf 1610 h->needs_plt = 1;
37e55690
JJ		 1611 h->plt.refcount += 1;
1612 break;
1613
6a3e1bae 1614 case R_386_SIZE32:
06a6a421 1615 size_reloc = TRUE;
6a3e1bae
L		 1616 goto do_size;
1617
13ae64f3 1618 case R_386_TLS_IE_32:
37e55690
JJ		 1619 case R_386_TLS_IE:
1620 case R_386_TLS_GOTIE:
1d85728f 1621 if (!info->executable)
13ae64f3 1622 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1623 /* Fall through */
1624
252b5132 1625 case R_386_GOT32:
13ae64f3 1626 case R_386_TLS_GD:
67a4f2b7
AO		 1627 case R_386_TLS_GOTDESC:
1628 case R_386_TLS_DESC_CALL:
252b5132 1629 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1630 {
1631 int tls_type, old_tls_type;
1632
1633 switch (r_type)
1634 {
1635 default:
1636 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1637 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1638 case R_386_TLS_GOTDESC:
1639 case R_386_TLS_DESC_CALL:
1640 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1641 case R_386_TLS_IE_32:
1642 if (ELF32_R_TYPE (rel->r_info) == r_type)
1643 tls_type = GOT_TLS_IE_NEG;
1644 else
ebcfb3c0
JJ		 1645 /* If this is a GD->IE transition, we may use either of
1646 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1647 tls_type = GOT_TLS_IE;
1648 break;
1649 case R_386_TLS_IE:
1650 case R_386_TLS_GOTIE:
1651 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1652 }
1653
1654 if (h != NULL)
1655 {
1656 h->got.refcount += 1;
1657 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1658 }
1659 else
1660 {
1661 bfd_signed_vma *local_got_refcounts;
1662
1663 /* This is a global offset table entry for a local symbol. */
1664 local_got_refcounts = elf_local_got_refcounts (abfd);
1665 if (local_got_refcounts == NULL)
1666 {
1667 bfd_size_type size;
1668
1669 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1670 size *= (sizeof (bfd_signed_vma)
1671 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1672 local_got_refcounts = (bfd_signed_vma *)
1673 bfd_zalloc (abfd, size);
13ae64f3 1674 if (local_got_refcounts == NULL)
c2e61a4e 1675 return FALSE;
13ae64f3 1676 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1677 elf_i386_local_tlsdesc_gotent (abfd)
1678 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1679 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1680 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1681 }
1682 local_got_refcounts[r_symndx] += 1;
1683 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1684 }
1685
37e55690
JJ		 1686 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1687 tls_type |= old_tls_type;
13ae64f3
JJ		 1688 /* If a TLS symbol is accessed using IE at least once,
1689 there is no point to use dynamic model for it. */
ebcfb3c0 1690 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1691 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1692 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1693 {
67a4f2b7 1694 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1695 tls_type = old_tls_type;
67a4f2b7
AO		 1696 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1697 && GOT_TLS_GD_ANY_P (tls_type))
1698 tls_type |= old_tls_type;
13ae64f3
JJ		 1699 else
1700 {
09a24cbf 1701 if (h)
4c544807
L		 1702 name = h->root.root.string;
1703 else
1704 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1705 NULL);
13ae64f3 1706 (*_bfd_error_handler)
d003868e 1707 (_("%B: `%s' accessed both as normal and "
55fd94b0 1708 "thread local symbol"),
4c544807 1709 abfd, name);
68c4a57e 1710 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1711 return FALSE;
13ae64f3
JJ		 1712 }
1713 }
1714
1715 if (old_tls_type != tls_type)
1716 {
1717 if (h != NULL)
1718 elf_i386_hash_entry (h)->tls_type = tls_type;
1719 else
1720 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1721 }
1722 }
0ac8d2ca
AM		 1723 /* Fall through */
1724
1725 case R_386_GOTOFF:
1726 case R_386_GOTPC:
13ae64f3 1727 create_got:
6de2ae4a 1728 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 1729 {
1730 if (htab->elf.dynobj == NULL)
1731 htab->elf.dynobj = abfd;
6de2ae4a 1732 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1733 return FALSE;
0ac8d2ca 1734 }
37e55690
JJ		 1735 if (r_type != R_386_TLS_IE)
1736 break;
1737 /* Fall through */
252b5132 1738
37e55690
JJ		 1739 case R_386_TLS_LE_32:
1740 case R_386_TLS_LE:
1d85728f 1741 if (info->executable)
37e55690 1742 break;
bffbf940 1743 info->flags |= DF_STATIC_TLS;
b34976b6 1744 /* Fall through */
252b5132
RH		 1745
1746 case R_386_32:
1747 case R_386_PC32:
710ab287 1748 if (h != NULL && info->executable)
6725bdbf 1749 {
12d0ee4a 1750 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1751 need a copy reloc. We can't check reliably at this
1752 stage whether the section is read-only, as input
1753 sections have not yet been mapped to output sections.
1754 Tentatively set the flag for now, and correct in
1755 adjust_dynamic_symbol. */
f5385ebf 1756 h->non_got_ref = 1;
12d0ee4a
AM		 1757
1758 /* We may need a .plt entry if the function this reloc
1759 refers to is in a shared lib. */
51b64d56 1760 h->plt.refcount += 1;
c6585bbb 1761 if (r_type != R_386_PC32)
f5385ebf 1762 h->pointer_equality_needed = 1;
6725bdbf 1763 }
7843f00e 1764
06a6a421 1765 size_reloc = FALSE;
6a3e1bae 1766do_size:
252b5132 1767 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1768 against a global symbol, or a non PC relative reloc
1769 against a local symbol, then we need to copy the reloc
1770 into the shared library. However, if we are linking with
1771 -Bsymbolic, we do not need to copy a reloc against a
1772 global symbol which is defined in an object we are
1773 including in the link (i.e., DEF_REGULAR is set). At
1774 this point we have not seen all the input files, so it is
1775 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1776 later (it is never cleared). In case of a weak definition,
1777 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1778 a shared library. We account for that possibility below by
1f655a09
L		 1779 storing information in the relocs_copied field of the hash
1780 table entry. A similar situation occurs when creating
1781 shared libraries and symbol visibility changes render the
12d0ee4a 1782 symbol local.
56882138 1783
12d0ee4a
AM		 1784 If on the other hand, we are creating an executable, we
1785 may need to keep relocations for symbols satisfied by a
1786 dynamic library if we manage to avoid copy relocs for the
1787 symbol. */
1788 if ((info->shared
1789 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1790 && (r_type != R_386_PC32
12d0ee4a 1791 || (h != NULL
55255dae 1792 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1793 || h->root.type == bfd_link_hash_defweak
f5385ebf 1794 || !h->def_regular))))
a23b6845
AM		 1795 || (ELIMINATE_COPY_RELOCS
1796 && !info->shared
12d0ee4a
AM		 1797 && (sec->flags & SEC_ALLOC) != 0
1798 && h != NULL
12d0ee4a 1799 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1800 || !h->def_regular)))
252b5132 1801 {
e03a8ed8
L		 1802 struct elf_dyn_relocs *p;
1803 struct elf_dyn_relocs **head;
ec338859 1804
12d0ee4a
AM		 1805 /* We must copy these reloc types into the output file.
1806 Create a reloc section in dynobj and make room for
1807 this reloc. */
252b5132
RH		 1808 if (sreloc == NULL)
1809 {
0ac8d2ca
AM		 1810 if (htab->elf.dynobj == NULL)
1811 htab->elf.dynobj = abfd;
1812
83bac4b0
NC		 1813 sreloc = _bfd_elf_make_dynamic_reloc_section
1814 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1815
252b5132 1816 if (sreloc == NULL)
c2e61a4e 1817 return FALSE;
252b5132
RH		 1818 }
1819
0c715baa
AM		 1820 /* If this is a global symbol, we count the number of
1821 relocations we need for this symbol. */
1822 if (h != NULL)
252b5132 1823 {
d5597ebc 1824 head = &eh->dyn_relocs;
0c715baa
AM		 1825 }
1826 else
1827 {
ec338859
AM		 1828 /* Track dynamic relocs needed for local syms too.
1829 We really need local syms available to do this
1830 easily. Oh well. */
87d72d41 1831 void **vpp;
ec338859 1832 asection *s;
87d72d41
AM		 1833
1834 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1835 abfd, r_symndx);
1836 if (isym == NULL)
1837 return FALSE;
1838
1839 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1840 if (s == NULL)
87d72d41 1841 s = sec;
ec338859 1842
e81d3500 1843 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1844 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1845 }
1846
1847 p = *head;
1848 if (p == NULL || p->sec != sec)
1849 {
1850 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1851 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1852 amt);
ec338859 1853 if (p == NULL)
c2e61a4e 1854 return FALSE;
ec338859
AM		 1855 p->next = *head;
1856 *head = p;
1857 p->sec = sec;
1858 p->count = 0;
1859 p->pc_count = 0;
252b5132 1860 }
ec338859
AM		 1861
1862 p->count += 1;
06a6a421
L		 1863 /* Count size relocation as PC-relative relocation. */
1864 if (r_type == R_386_PC32 || size_reloc)
ec338859 1865 p->pc_count += 1;
252b5132 1866 }
252b5132
RH		 1867 break;
1868
1869 /* This relocation describes the C++ object vtable hierarchy.
1870 Reconstruct it for later use during GC. */
1871 case R_386_GNU_VTINHERIT:
d17e0c6e 1872 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1873 return FALSE;
252b5132
RH		 1874 break;
1875
1876 /* This relocation describes which C++ vtable entries are actually
1877 used. Record for later use during GC. */
1878 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1879 BFD_ASSERT (h != NULL);
1880 if (h != NULL
1881 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c2e61a4e 1882 return FALSE;
252b5132
RH		 1883 break;
1884
1885 default:
1886 break;
1887 }
dd7e64d4
L		 1888
1889 if (use_plt_got
1890 && h != NULL
1891 && h->plt.refcount > 0
8ded2ddc
L		 1892 && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
1893 || h->got.refcount > 0)
dd7e64d4
L		 1894 && htab->plt_got == NULL)
1895 {
1896 /* Create the GOT procedure linkage table. */
1897 unsigned int plt_got_align;
1898 const struct elf_backend_data *bed;
1899
1900 bed = get_elf_backend_data (info->output_bfd);
1901 BFD_ASSERT (sizeof (elf_i386_got_plt_entry) == 8
1902 && (sizeof (elf_i386_got_plt_entry)
1903 == sizeof (elf_i386_pic_got_plt_entry)));
1904 plt_got_align = 3;
1905
1906 if (htab->elf.dynobj == NULL)
1907 htab->elf.dynobj = abfd;
1908 htab->plt_got
1909 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
1910 ".plt.got",
1911 (bed->dynamic_sec_flags
1912 | SEC_ALLOC
1913 | SEC_CODE
1914 | SEC_LOAD
1915 | SEC_READONLY));
1916 if (htab->plt_got == NULL
1917 || !bfd_set_section_alignment (htab->elf.dynobj,
1918 htab->plt_got,
1919 plt_got_align))
1920 return FALSE;
1921 }
c1d11331
L		 1922
1923 if (r_type == R_386_GOT32
1924 && (h == NULL || h->type != STT_GNU_IFUNC))
1925 sec->need_convert_mov_to_lea = 1;
252b5132
RH		 1926 }
1927
b34976b6 1928 return TRUE;
252b5132
RH		 1929}
1930
1931/* Return the section that should be marked against GC for a given
1932 relocation. */
1933
1934static asection *
55fd94b0 1935elf_i386_gc_mark_hook (asection *sec,
07adf181 1936 struct bfd_link_info *info,
55fd94b0
AM		 1937 Elf_Internal_Rela *rel,
1938 struct elf_link_hash_entry *h,
1939 Elf_Internal_Sym *sym)
252b5132
RH		 1940{
1941 if (h != NULL)
07adf181
AM		 1942 switch (ELF32_R_TYPE (rel->r_info))
1943 {
1944 case R_386_GNU_VTINHERIT:
1945 case R_386_GNU_VTENTRY:
1946 return NULL;
1947 }
1948
1949 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1950}
1951
1952/* Update the got entry reference counts for the section being removed. */
1953
b34976b6 1954static bfd_boolean
55fd94b0
AM		 1955elf_i386_gc_sweep_hook (bfd *abfd,
1956 struct bfd_link_info *info,
1957 asection *sec,
1958 const Elf_Internal_Rela *relocs)
252b5132 1959{
4dfe6ac6 1960 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 1961 Elf_Internal_Shdr *symtab_hdr;
1962 struct elf_link_hash_entry **sym_hashes;
1963 bfd_signed_vma *local_got_refcounts;
1964 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1965
7dda2462
TG		 1966 if (info->relocatable)
1967 return TRUE;
1968
4dfe6ac6
NC		 1969 htab = elf_i386_hash_table (info);
1970 if (htab == NULL)
1971 return FALSE;
1972
ec338859 1973 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1974
0ffa91dd 1975 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 1976 sym_hashes = elf_sym_hashes (abfd);
1977 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1978
1979 relend = relocs + sec->reloc_count;
1980 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1981 {
1982 unsigned long r_symndx;
1983 unsigned int r_type;
1984 struct elf_link_hash_entry *h = NULL;
37e55690 1985
26e41594
AM		 1986 r_symndx = ELF32_R_SYM (rel->r_info);
1987 if (r_symndx >= symtab_hdr->sh_info)
1988 {
26e41594 1989 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1990 while (h->root.type == bfd_link_hash_indirect
1991 || h->root.type == bfd_link_hash_warning)
1992 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1993 }
bb1cb422
L		 1994 else
1995 {
1996 /* A local symbol. */
1997 Elf_Internal_Sym *isym;
1998
1999 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2000 abfd, r_symndx);
2001
2002 /* Check relocation against local STT_GNU_IFUNC symbol. */
2003 if (isym != NULL
2004 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
2005 {
2006 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
2007 if (h == NULL)
2008 abort ();
2009 }
2010 }
0c715baa 2011
3db2e7dd
L		 2012 if (h)
2013 {
2014 struct elf_i386_link_hash_entry *eh;
2015 struct elf_dyn_relocs **pp;
2016 struct elf_dyn_relocs *p;
2017
2018 eh = (struct elf_i386_link_hash_entry *) h;
2019 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2020 if (p->sec == sec)
2021 {
2022 /* Everything must go for SEC. */
2023 *pp = p->next;
2024 break;
2025 }
2026 }
2027
26e41594 2028 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 2029 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
2030 symtab_hdr, sym_hashes,
2031 &r_type, GOT_UNKNOWN,
23209a78 2032 rel, relend, h, r_symndx))
142411ca
L		 2033 return FALSE;
2034
26e41594
AM		 2035 switch (r_type)
2036 {
2037 case R_386_TLS_LDM:
4dfe6ac6
NC		 2038 if (htab->tls_ldm_got.refcount > 0)
2039 htab->tls_ldm_got.refcount -= 1;
26e41594 2040 break;
0c715baa 2041
26e41594 2042 case R_386_TLS_GD:
67a4f2b7
AO		 2043 case R_386_TLS_GOTDESC:
2044 case R_386_TLS_DESC_CALL:
26e41594
AM		 2045 case R_386_TLS_IE_32:
2046 case R_386_TLS_IE:
2047 case R_386_TLS_GOTIE:
2048 case R_386_GOT32:
2049 if (h != NULL)
2050 {
2051 if (h->got.refcount > 0)
2052 h->got.refcount -= 1;
bb1cb422
L		 2053 if (h->type == STT_GNU_IFUNC)
2054 {
2055 if (h->plt.refcount > 0)
2056 h->plt.refcount -= 1;
2057 }
26e41594
AM		 2058 }
2059 else if (local_got_refcounts != NULL)
2060 {
2061 if (local_got_refcounts[r_symndx] > 0)
2062 local_got_refcounts[r_symndx] -= 1;
2063 }
2064 break;
0c715baa 2065
26e41594
AM		 2066 case R_386_32:
2067 case R_386_PC32:
1788fc08 2068 case R_386_SIZE32:
3db2e7dd
L		 2069 if (info->shared
2070 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM		 2071 break;
2072 /* Fall through */
6725bdbf 2073
26e41594
AM		 2074 case R_386_PLT32:
2075 if (h != NULL)
2076 {
2077 if (h->plt.refcount > 0)
2078 h->plt.refcount -= 1;
2079 }
2080 break;
dd5724d5 2081
bb1cb422
L		 2082 case R_386_GOTOFF:
2083 if (h != NULL && h->type == STT_GNU_IFUNC)
2084 {
2085 if (h->got.refcount > 0)
2086 h->got.refcount -= 1;
2087 if (h->plt.refcount > 0)
2088 h->plt.refcount -= 1;
2089 }
2090 break;
2091
26e41594
AM		 2092 default:
2093 break;
2094 }
2095 }
252b5132 2096
b34976b6 2097 return TRUE;
252b5132
RH		 2098}
2099
2100/* Adjust a symbol defined by a dynamic object and referenced by a
2101 regular object. The current definition is in some section of the
2102 dynamic object, but we're not including those sections. We have to
2103 change the definition to something the rest of the link can
2104 understand. */
2105
b34976b6 2106static bfd_boolean
55fd94b0
AM		 2107elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2108 struct elf_link_hash_entry *h)
252b5132 2109{
6725bdbf 2110 struct elf_i386_link_hash_table *htab;
252b5132 2111 asection *s;
5ca5bb35
L		 2112 struct elf_i386_link_hash_entry *eh;
2113 struct elf_dyn_relocs *p;
252b5132 2114
cbe950e9
L		 2115 /* STT_GNU_IFUNC symbol must go through PLT. */
2116 if (h->type == STT_GNU_IFUNC)
2117 {
73bcf233
L		 2118 /* All local STT_GNU_IFUNC references must be treate as local
2119 calls via local PLT. */
5ca5bb35
L		 2120 if (h->ref_regular
2121 && SYMBOL_CALLS_LOCAL (info, h))
2122 {
73bcf233 2123 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2124 struct elf_dyn_relocs **pp;
2125
2126 eh = (struct elf_i386_link_hash_entry *) h;
2127 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2128 {
2129 pc_count += p->pc_count;
2130 p->count -= p->pc_count;
2131 p->pc_count = 0;
73bcf233 2132 count += p->count;
5ca5bb35
L		 2133 if (p->count == 0)
2134 *pp = p->next;
2135 else
2136 pp = &p->next;
2137 }
2138
73bcf233 2139 if (pc_count || count)
5ca5bb35
L		 2140 {
2141 h->needs_plt = 1;
5ca5bb35 2142 h->non_got_ref = 1;
a5479e5f
L		 2143 if (h->plt.refcount <= 0)
2144 h->plt.refcount = 1;
2145 else
2146 h->plt.refcount += 1;
5ca5bb35
L		 2147 }
2148 }
2149
cbe950e9
L		 2150 if (h->plt.refcount <= 0)
2151 {
2152 h->plt.offset = (bfd_vma) -1;
2153 h->needs_plt = 0;
2154 }
2155 return TRUE;
2156 }
2157
252b5132
RH		 2158 /* If this is a function, put it in the procedure linkage table. We
2159 will fill in the contents of the procedure linkage table later,
2160 when we know the address of the .got section. */
2161 if (h->type == STT_FUNC
f5385ebf 2162 || h->needs_plt)
252b5132 2163 {
6725bdbf 2164 if (h->plt.refcount <= 0
9c7a29a3
AM		 2165 || SYMBOL_CALLS_LOCAL (info, h)
2166 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2167 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2168 {
2169 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2170 file, but the symbol was never referred to by a dynamic
2171 object, or if all references were garbage collected. In
2172 such a case, we don't actually need to build a procedure
2173 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2174 h->plt.offset = (bfd_vma) -1;
f5385ebf 2175 h->needs_plt = 0;
252b5132
RH		 2176 }
2177
b34976b6 2178 return TRUE;
252b5132 2179 }
6725bdbf
AM		 2180 else
2181 /* It's possible that we incorrectly decided a .plt reloc was
2182 needed for an R_386_PC32 reloc to a non-function sym in
2183 check_relocs. We can't decide accurately between function and
2184 non-function syms in check-relocs; Objects loaded later in
2185 the link may change h->type. So fix it now. */
bbd7ec4a 2186 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2187
2188 /* If this is a weak symbol, and there is a real definition, the
2189 processor independent code will have arranged for us to see the
2190 real definition first, and we can just use the same value. */
f6e332e6 2191 if (h->u.weakdef != NULL)
252b5132 2192 {
f6e332e6
AM		 2193 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2194 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2195 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2196 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2197 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2198 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2199 return TRUE;
252b5132
RH		 2200 }
2201
2202 /* This is a reference to a symbol defined by a dynamic object which
2203 is not a function. */
2204
2205 /* If we are creating a shared library, we must presume that the
2206 only references to the symbol are via the global offset table.
2207 For such cases we need not do anything here; the relocations will
2208 be handled correctly by relocate_section. */
d5597ebc 2209 if (!info->executable)
b34976b6 2210 return TRUE;
252b5132 2211
7843f00e 2212 /* If there are no references to this symbol that do not use the
d5597ebc
L		 2213 GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
2214 reloc. */
2215 eh = (struct elf_i386_link_hash_entry *) h;
2216 if (!h->non_got_ref && !eh->gotoff_ref)
b34976b6 2217 return TRUE;
7843f00e 2218
8bd621d8
AM		 2219 /* If -z nocopyreloc was given, we won't generate them either. */
2220 if (info->nocopyreloc)
2221 {
f5385ebf 2222 h->non_got_ref = 0;
b34976b6 2223 return TRUE;
8bd621d8
AM		 2224 }
2225
643796e3 2226 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2227 if (htab == NULL)
2228 return FALSE;
643796e3 2229
d5597ebc
L		 2230 /* If there aren't any dynamic relocs in read-only sections nor
2231 R_386_GOTOFF relocation, then we can keep the dynamic relocs and
2232 avoid the copy reloc. This doesn't work on VxWorks, where we can
2233 not have dynamic relocations (other than copy and jump slot
2234 relocations) in an executable. */
23209a78 2235 if (ELIMINATE_COPY_RELOCS
d5597ebc 2236 && !eh->gotoff_ref
23209a78 2237 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2238 {
a23b6845
AM		 2239 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2240 {
2241 s = p->sec->output_section;
2242 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2243 break;
2244 }
2245
a23b6845
AM		 2246 if (p == NULL)
2247 {
f5385ebf 2248 h->non_got_ref = 0;
a23b6845
AM		 2249 return TRUE;
2250 }
ebe50bae
AM		 2251 }
2252
252b5132
RH		 2253 /* We must allocate the symbol in our .dynbss section, which will
2254 become part of the .bss section of the executable. There will be
2255 an entry for this symbol in the .dynsym section. The dynamic
2256 object will contain position independent code, so all references
2257 from the dynamic object to this symbol will go through the global
2258 offset table. The dynamic linker will use the .dynsym entry to
2259 determine the address it must put in the global offset table, so
2260 both the dynamic object and the regular object will refer to the
2261 same memory location for the variable. */
2262
252b5132
RH		 2263 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2264 copy the initial value out of the dynamic object and into the
0ac8d2ca 2265 runtime process image. */
1d7e9d18 2266 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2267 {
eea6121a 2268 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2269 h->needs_copy = 1;
252b5132
RH		 2270 }
2271
0ac8d2ca 2272 s = htab->sdynbss;
252b5132 2273
6cabe1ea 2274 return _bfd_elf_adjust_dynamic_copy (info, h, s);
252b5132
RH		 2275}
2276
6725bdbf 2277/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2278 dynamic relocs. */
6725bdbf 2279
b34976b6 2280static bfd_boolean
eb4ff4d6 2281elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2282{
2283 struct bfd_link_info *info;
2284 struct elf_i386_link_hash_table *htab;
5a15f56f 2285 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2286 struct elf_dyn_relocs *p;
25e762b9 2287 unsigned plt_entry_size;
6725bdbf 2288
e92d460e 2289 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2290 return TRUE;
6725bdbf 2291
cbe950e9 2292 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2293
6725bdbf
AM		 2294 info = (struct bfd_link_info *) inf;
2295 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2296 if (htab == NULL)
2297 return FALSE;
6725bdbf 2298
25e762b9
RM		 2299 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2300
dd7e64d4
L		 2301 /* We can't use the GOT PLT if pointer equality is needed since
2302 finish_dynamic_symbol won't clear symbol value and the dynamic
2303 linker won't update the GOT slot. We will get into an infinite
2304 loop at run-time. */
2305 if (htab->plt_got != NULL
2306 && h->type != STT_GNU_IFUNC
2307 && !h->pointer_equality_needed
2308 && h->plt.refcount > 0
2309 && h->got.refcount > 0)
2310 {
2311 /* Don't use the regular PLT if there are both GOT and GOTPLT
2312 reloctions. */
2313 h->plt.offset = (bfd_vma) -1;
2314
2315 /* Use the GOT PLT. */
2316 eh->plt_got.refcount = 1;
2317 }
2318
cbe950e9
L		 2319 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2320 here if it is defined and referenced in a non-shared object. */
2321 if (h->type == STT_GNU_IFUNC
2322 && h->def_regular)
25e762b9 2323 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
7b70956d
WN		 2324 plt_entry_size,
2325 plt_entry_size, 4);
cbe950e9 2326 else if (htab->elf.dynamic_sections_created
dd7e64d4 2327 && (h->plt.refcount > 0 || eh->plt_got.refcount > 0))
6725bdbf 2328 {
25070364
L		 2329 bfd_boolean use_plt_got;
2330
8ded2ddc 2331 if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
25070364
L		 2332 {
2333 /* Don't use the regular PLT for DF_BIND_NOW. */
2334 h->plt.offset = (bfd_vma) -1;
2335
2336 /* Use the GOT PLT. */
2337 h->got.refcount = 1;
2338 eh->plt_got.refcount = 1;
2339 }
2340
2341 use_plt_got = eh->plt_got.refcount > 0;
dd7e64d4 2342
5a15f56f
AM		 2343 /* Make sure this symbol is output as a dynamic symbol.
2344 Undefined weak syms won't yet be marked as dynamic. */
2345 if (h->dynindx == -1
f5385ebf 2346 && !h->forced_local)
5a15f56f 2347 {
c152c796 2348 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2349 return FALSE;
5a15f56f
AM		 2350 }
2351
4e795f50
AM		 2352 if (info->shared
2353 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2354 {
6de2ae4a 2355 asection *s = htab->elf.splt;
dd7e64d4 2356 asection *got_s = htab->plt_got;
6725bdbf 2357
7c1e8d3e
L		 2358 /* If this is the first .plt entry, make room for the special
2359 first entry. The .plt section is used by prelink to undo
2360 prelinking for dynamic relocations. */
2361 if (s->size == 0)
2362 s->size = plt_entry_size;
2363
dd7e64d4
L		 2364 if (use_plt_got)
2365 eh->plt_got.offset = got_s->size;
2366 else
7c1e8d3e 2367 h->plt.offset = s->size;
6725bdbf 2368
ced53ee5
AM		 2369 /* If this symbol is not defined in a regular file, and we are
2370 not generating a shared library, then set the symbol to this
2371 location in the .plt. This is required to make function
2372 pointers compare as equal between the normal executable and
2373 the shared library. */
2374 if (! info->shared
f5385ebf 2375 && !h->def_regular)
ced53ee5 2376 {
dd7e64d4
L		 2377 if (use_plt_got)
2378 {
2379 /* We need to make a call to the entry of the GOT PLT
2380 instead of regular PLT entry. */
2381 h->root.u.def.section = got_s;
2382 h->root.u.def.value = eh->plt_got.offset;
2383 }
2384 else
2385 {
2386 h->root.u.def.section = s;
2387 h->root.u.def.value = h->plt.offset;
2388 }
ced53ee5 2389 }
6725bdbf 2390
ced53ee5 2391 /* Make room for this entry. */
dd7e64d4
L		 2392 if (use_plt_got)
2393 got_s->size += sizeof (elf_i386_got_plt_entry);
2394 else
2395 {
2396 s->size += plt_entry_size;
6725bdbf 2397
dd7e64d4
L		 2398 /* We also need to make an entry in the .got.plt section,
2399 which will be placed in the .got section by the linker
2400 script. */
2401 htab->elf.sgotplt->size += 4;
6725bdbf 2402
dd7e64d4
L		 2403 /* We also need to make an entry in the .rel.plt section. */
2404 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2405 htab->elf.srelplt->reloc_count++;
2406 }
eac338cf 2407
23209a78
RM		 2408 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
2409 && !info->shared)
eac338cf
PB		 2410 {
2411 /* VxWorks has a second set of relocations for each PLT entry
2412 in executables. They go in a separate relocation section,
2413 which is processed by the kernel loader. */
2414
2415 /* There are two relocations for the initial PLT entry: an
2416 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2417 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2418
25e762b9 2419 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2420 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2421
2422 /* There are two extra relocations for each subsequent PLT entry:
2423 an R_386_32 relocation for the GOT entry, and an R_386_32
2424 relocation for the PLT entry. */
2425
2426 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2427 }
6725bdbf 2428 }
ced53ee5
AM		 2429 else
2430 {
51b64d56 2431 h->plt.offset = (bfd_vma) -1;
f5385ebf 2432 h->needs_plt = 0;
ced53ee5 2433 }
6725bdbf
AM		 2434 }
2435 else
2436 {
51b64d56 2437 h->plt.offset = (bfd_vma) -1;
f5385ebf 2438 h->needs_plt = 0;
6725bdbf
AM		 2439 }
2440
67a4f2b7
AO		 2441 eh->tlsdesc_got = (bfd_vma) -1;
2442
37e55690 2443 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2444 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2445 if (h->got.refcount > 0
1d85728f 2446 && info->executable
13ae64f3 2447 && h->dynindx == -1
37e55690 2448 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2449 h->got.offset = (bfd_vma) -1;
13ae64f3 2450 else if (h->got.refcount > 0)
6725bdbf 2451 {
0ac8d2ca 2452 asection *s;
b34976b6 2453 bfd_boolean dyn;
13ae64f3 2454 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2455
5a15f56f
AM		 2456 /* Make sure this symbol is output as a dynamic symbol.
2457 Undefined weak syms won't yet be marked as dynamic. */
2458 if (h->dynindx == -1
f5385ebf 2459 && !h->forced_local)
5a15f56f 2460 {
c152c796 2461 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2462 return FALSE;
5a15f56f
AM		 2463 }
2464
6de2ae4a 2465 s = htab->elf.sgot;
67a4f2b7
AO		 2466 if (GOT_TLS_GDESC_P (tls_type))
2467 {
6de2ae4a 2468 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2469 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2470 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2471 h->got.offset = (bfd_vma) -2;
2472 }
2473 if (! GOT_TLS_GDESC_P (tls_type)
2474 || GOT_TLS_GD_P (tls_type))
2475 {
2476 h->got.offset = s->size;
2477 s->size += 4;
2478 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2479 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2480 s->size += 4;
2481 }
ebe50bae 2482 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2483 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2484 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2485 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2486 need two), R_386_TLS_GD needs one if local symbol and two if
2487 global. */
2488 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2489 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2490 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2491 || (tls_type & GOT_TLS_IE))
6de2ae4a 2492 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2493 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2494 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2495 else if (! GOT_TLS_GDESC_P (tls_type)
2496 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2497 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 2498 && (info->shared
2499 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2500 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2501 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2502 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2503 }
2504 else
51b64d56 2505 h->got.offset = (bfd_vma) -1;
6725bdbf 2506
5a15f56f 2507 if (eh->dyn_relocs == NULL)
b34976b6 2508 return TRUE;
5a15f56f 2509
0c715baa
AM		 2510 /* In the shared -Bsymbolic case, discard space allocated for
2511 dynamic pc-relative relocs against symbols which turn out to be
2512 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2513 space for pc-relative relocs that have become local due to symbol
2514 visibility changes. */
0c715baa
AM		 2515
2516 if (info->shared)
5a15f56f 2517 {
09695f56
AM		 2518 /* The only reloc that uses pc_count is R_386_PC32, which will
2519 appear on a call or on something like ".long foo - .". We
2520 want calls to protected symbols to resolve directly to the
2521 function rather than going via the plt. If people want
2522 function pointer comparisons to work as expected then they
2523 should avoid writing assembly like ".long foo - .". */
2524 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2525 {
e03a8ed8 2526 struct elf_dyn_relocs **pp;
0c715baa
AM		 2527
2528 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2529 {
c3ce498c
L		 2530 p->count -= p->pc_count;
2531 p->pc_count = 0;
0c715baa
AM		 2532 if (p->count == 0)
2533 *pp = p->next;
2534 else
2535 pp = &p->next;
2536 }
5a15f56f 2537 }
4e795f50 2538
23209a78 2539 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2540 {
e03a8ed8 2541 struct elf_dyn_relocs **pp;
3348747a
NS		 2542 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2543 {
2544 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2545 *pp = p->next;
2546 else
2547 pp = &p->next;
2548 }
2549 }
2550
4e795f50 2551 /* Also discard relocs on undefined weak syms with non-default
c353e543 2552 visibility. */
22d606e9 2553 if (eh->dyn_relocs != NULL
c353e543 2554 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2555 {
2556 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2557 eh->dyn_relocs = NULL;
2558
2559 /* Make sure undefined weak symbols are output as a dynamic
2560 symbol in PIEs. */
2561 else if (h->dynindx == -1
2562 && !h->forced_local)
2563 {
2564 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2565 return FALSE;
2566 }
2567 }
0c715baa 2568 }
a23b6845 2569 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2570 {
2571 /* For the non-shared case, discard space for relocs against
2572 symbols which turn out to need copy relocs or are not
2573 dynamic. */
2574
f5385ebf
AM		 2575 if (!h->non_got_ref
2576 && ((h->def_dynamic
2577 && !h->def_regular)
ebe50bae 2578 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2579 && (h->root.type == bfd_link_hash_undefweak
2580 || h->root.type == bfd_link_hash_undefined))))
2581 {
2582 /* Make sure this symbol is output as a dynamic symbol.
2583 Undefined weak syms won't yet be marked as dynamic. */
2584 if (h->dynindx == -1
f5385ebf 2585 && !h->forced_local)
0c715baa 2586 {
c152c796 2587 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2588 return FALSE;
0c715baa 2589 }
5a15f56f 2590
0c715baa
AM		 2591 /* If that succeeded, we know we'll be keeping all the
2592 relocs. */
2593 if (h->dynindx != -1)
2594 goto keep;
2595 }
2596
2597 eh->dyn_relocs = NULL;
2598
ec338859 2599 keep: ;
5a15f56f
AM		 2600 }
2601
0c715baa
AM		 2602 /* Finally, allocate space. */
2603 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2604 {
e7c33416
NC		 2605 asection *sreloc;
2606
cbe950e9 2607 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2608
2609 BFD_ASSERT (sreloc != NULL);
eea6121a 2610 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2611 }
2612
b34976b6 2613 return TRUE;
6725bdbf
AM		 2614}
2615
c25bc9fc
L		 2616/* Allocate space in .plt, .got and associated reloc sections for
2617 local dynamic relocs. */
2618
2619static bfd_boolean
2620elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2621{
2622 struct elf_link_hash_entry *h
2623 = (struct elf_link_hash_entry *) *slot;
2624
2625 if (h->type != STT_GNU_IFUNC
2626 || !h->def_regular
2627 || !h->ref_regular
2628 || !h->forced_local
2629 || h->root.type != bfd_link_hash_defined)
2630 abort ();
2631
2632 return elf_i386_allocate_dynrelocs (h, inf);
2633}
2634
0c715baa
AM		 2635/* Find any dynamic relocs that apply to read-only sections. */
2636
b34976b6 2637static bfd_boolean
eb4ff4d6 2638elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2639{
2640 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2641 struct elf_dyn_relocs *p;
0c715baa 2642
aa715242
L		 2643 /* Skip local IFUNC symbols. */
2644 if (h->forced_local && h->type == STT_GNU_IFUNC)
2645 return TRUE;
2646
0c715baa
AM		 2647 eh = (struct elf_i386_link_hash_entry *) h;
2648 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2649 {
2650 asection *s = p->sec->output_section;
2651
2652 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2653 {
2654 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2655
2656 info->flags |= DF_TEXTREL;
2657
1952c5cd
L		 2658 if ((info->warn_shared_textrel && info->shared)
2659 || info->error_textrel)
2660 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L		 2661 p->sec->owner, h->root.root.string,
2662 p->sec);
2663
0c715baa 2664 /* Not an error, just cut short the traversal. */
b34976b6 2665 return FALSE;
0c715baa
AM		 2666 }
2667 }
b34976b6 2668 return TRUE;
0c715baa
AM		 2669}
2670
daa67607
L		 2671/* Convert
2672 mov foo@GOT(%reg), %reg
2673 to
2674 lea foo@GOTOFF(%reg), %reg
2675 with the local symbol, foo. */
2676
2677static bfd_boolean
2678elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
2679 struct bfd_link_info *link_info)
2680{
2681 Elf_Internal_Shdr *symtab_hdr;
2682 Elf_Internal_Rela *internal_relocs;
2683 Elf_Internal_Rela *irel, *irelend;
2684 bfd_byte *contents;
2685 struct elf_i386_link_hash_table *htab;
2686 bfd_boolean changed_contents;
2687 bfd_boolean changed_relocs;
2688 bfd_signed_vma *local_got_refcounts;
2689
2690 /* Don't even try to convert non-ELF outputs. */
2691 if (!is_elf_hash_table (link_info->hash))
2692 return FALSE;
2693
c1d11331 2694 /* Nothing to do if there is no need or no output. */
daa67607 2695 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
c1d11331 2696 || sec->need_convert_mov_to_lea == 0
c8831961 2697 || bfd_is_abs_section (sec->output_section))
daa67607
L		 2698 return TRUE;
2699
2700 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2701
2702 /* Load the relocations for this section. */
2703 internal_relocs = (_bfd_elf_link_read_relocs
2704 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2705 link_info->keep_memory));
2706 if (internal_relocs == NULL)
2707 return FALSE;
2708
2709 htab = elf_i386_hash_table (link_info);
2710 changed_contents = FALSE;
2711 changed_relocs = FALSE;
2712 local_got_refcounts = elf_local_got_refcounts (abfd);
2713
2714 /* Get the section contents. */
2715 if (elf_section_data (sec)->this_hdr.contents != NULL)
2716 contents = elf_section_data (sec)->this_hdr.contents;
2717 else
2718 {
2719 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2720 goto error_return;
2721 }
2722
2723 irelend = internal_relocs + sec->reloc_count;
2724 for (irel = internal_relocs; irel < irelend; irel++)
2725 {
2726 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2727 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2728 unsigned int indx;
2729 struct elf_link_hash_entry *h;
2730
2731 if (r_type != R_386_GOT32)
2732 continue;
2733
2734 /* Get the symbol referred to by the reloc. */
2735 if (r_symndx < symtab_hdr->sh_info)
2736 {
2737 Elf_Internal_Sym *isym;
2738
2739 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2740 abfd, r_symndx);
2741
2742 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2743 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
5697705a 2744 && irel->r_offset >= 2
4b71eec6 2745 && bfd_get_8 (abfd, contents + irel->r_offset - 2) == 0x8b)
daa67607 2746 {
4b71eec6 2747 bfd_put_8 (abfd, 0x8d, contents + irel->r_offset - 2);
daa67607
L		 2748 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2749 if (local_got_refcounts != NULL
2750 && local_got_refcounts[r_symndx] > 0)
2751 local_got_refcounts[r_symndx] -= 1;
2752 changed_contents = TRUE;
2753 changed_relocs = TRUE;
2754 }
2755 continue;
2756 }
2757
2758 indx = r_symndx - symtab_hdr->sh_info;
2759 h = elf_sym_hashes (abfd)[indx];
2760 BFD_ASSERT (h != NULL);
2761
2762 while (h->root.type == bfd_link_hash_indirect
2763 || h->root.type == bfd_link_hash_warning)
2764 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2765
3f65f599
L		 2766 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
2767 optimizing _DYNAMIC since ld.so may use its link-time address. */
daa67607
L		 2768 if (h->def_regular
2769 && h->type != STT_GNU_IFUNC
9637f6ef 2770 && h != htab->elf.hdynamic
daa67607 2771 && SYMBOL_REFERENCES_LOCAL (link_info, h)
5697705a 2772 && irel->r_offset >= 2
4b71eec6 2773 && bfd_get_8 (abfd, contents + irel->r_offset - 2) == 0x8b)
daa67607 2774 {
4b71eec6 2775 bfd_put_8 (abfd, 0x8d, contents + irel->r_offset - 2);
daa67607
L		 2776 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2777 if (h->got.refcount > 0)
2778 h->got.refcount -= 1;
2779 changed_contents = TRUE;
2780 changed_relocs = TRUE;
2781 }
2782 }
2783
2784 if (contents != NULL
2785 && elf_section_data (sec)->this_hdr.contents != contents)
2786 {
2787 if (!changed_contents && !link_info->keep_memory)
2788 free (contents);
2789 else
2790 {
2791 /* Cache the section contents for elf_link_input_bfd. */
2792 elf_section_data (sec)->this_hdr.contents = contents;
2793 }
2794 }
2795
2796 if (elf_section_data (sec)->relocs != internal_relocs)
2797 {
2798 if (!changed_relocs)
2799 free (internal_relocs);
2800 else
2801 elf_section_data (sec)->relocs = internal_relocs;
2802 }
2803
2804 return TRUE;
2805
2806 error_return:
2807 if (contents != NULL
2808 && elf_section_data (sec)->this_hdr.contents != contents)
2809 free (contents);
2810 if (internal_relocs != NULL
2811 && elf_section_data (sec)->relocs != internal_relocs)
2812 free (internal_relocs);
2813 return FALSE;
2814}
2815
252b5132
RH		 2816/* Set the sizes of the dynamic sections. */
2817
b34976b6 2818static bfd_boolean
23209a78 2819elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2820{
6725bdbf 2821 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2822 bfd *dynobj;
2823 asection *s;
b34976b6 2824 bfd_boolean relocs;
0c715baa 2825 bfd *ibfd;
252b5132 2826
6725bdbf 2827 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2828 if (htab == NULL)
2829 return FALSE;
ebe50bae 2830 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2831 if (dynobj == NULL)
2832 abort ();
252b5132 2833
ebe50bae 2834 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2835 {
2836 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2837 if (info->executable)
252b5132 2838 {
3d4d4302 2839 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 2840 if (s == NULL)
2841 abort ();
eea6121a 2842 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2843 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2844 }
161d71a6 2845 }
6725bdbf 2846
0c715baa
AM		 2847 /* Set up .got offsets for local syms, and space for local dynamic
2848 relocs. */
c72f2fb2 2849 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
161d71a6
L		 2850 {
2851 bfd_signed_vma *local_got;
2852 bfd_signed_vma *end_local_got;
13ae64f3 2853 char *local_tls_type;
67a4f2b7 2854 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2855 bfd_size_type locsymcount;
2856 Elf_Internal_Shdr *symtab_hdr;
2857 asection *srel;
6725bdbf 2858
0ffa91dd 2859 if (! is_i386_elf (ibfd))
161d71a6 2860 continue;
6725bdbf 2861
0c715baa
AM		 2862 for (s = ibfd->sections; s != NULL; s = s->next)
2863 {
e03a8ed8 2864 struct elf_dyn_relocs *p;
0c715baa 2865
daa67607
L		 2866 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2867 return FALSE;
2868
e03a8ed8 2869 for (p = ((struct elf_dyn_relocs *)
e81d3500 2870 elf_section_data (s)->local_dynrel);
ec338859
AM		 2871 p != NULL;
2872 p = p->next)
0c715baa 2873 {
ec338859
AM		 2874 if (!bfd_is_abs_section (p->sec)
2875 && bfd_is_abs_section (p->sec->output_section))
2876 {
2877 /* Input section has been discarded, either because
2878 it is a copy of a linkonce section or due to
2879 linker script /DISCARD/, so we'll be discarding
2880 the relocs too. */
2881 }
23209a78 2882 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2883 && strcmp (p->sec->output_section->name,
2884 ".tls_vars") == 0)
2885 {
2886 /* Relocations in vxworks .tls_vars sections are
2887 handled specially by the loader. */
2888 }
248866a8 2889 else if (p->count != 0)
ec338859
AM		 2890 {
2891 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2892 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2893 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2894 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2895 {
2896 info->flags |= DF_TEXTREL;
1952c5cd
L		 2897 if ((info->warn_shared_textrel && info->shared)
2898 || info->error_textrel)
2899 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 2900 p->sec->owner, p->sec);
b70321a2 2901 }
ec338859 2902 }
0c715baa
AM		 2903 }
2904 }
2905
2906 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2907 if (!local_got)
2908 continue;
6725bdbf 2909
0ffa91dd 2910 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2911 locsymcount = symtab_hdr->sh_info;
2912 end_local_got = local_got + locsymcount;
13ae64f3 2913 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2914 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2915 s = htab->elf.sgot;
2916 srel = htab->elf.srelgot;
67a4f2b7
AO		 2917 for (; local_got < end_local_got;
2918 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2919 {
67a4f2b7 2920 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2921 if (*local_got > 0)
6725bdbf 2922 {
67a4f2b7
AO		 2923 if (GOT_TLS_GDESC_P (*local_tls_type))
2924 {
6de2ae4a 2925 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2926 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2927 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2928 *local_got = (bfd_vma) -2;
2929 }
2930 if (! GOT_TLS_GDESC_P (*local_tls_type)
2931 || GOT_TLS_GD_P (*local_tls_type))
2932 {
2933 *local_got = s->size;
2934 s->size += 4;
2935 if (GOT_TLS_GD_P (*local_tls_type)
2936 || *local_tls_type == GOT_TLS_IE_BOTH)
2937 s->size += 4;
2938 }
13ae64f3 2939 if (info->shared
67a4f2b7 2940 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2941 || (*local_tls_type & GOT_TLS_IE))
2942 {
2943 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2944 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2945 else if (GOT_TLS_GD_P (*local_tls_type)
2946 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2947 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2948 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2949 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2950 }
6725bdbf 2951 }
161d71a6
L		 2952 else
2953 *local_got = (bfd_vma) -1;
6725bdbf 2954 }
252b5132 2955 }
6725bdbf 2956
13ae64f3
JJ		 2957 if (htab->tls_ldm_got.refcount > 0)
2958 {
2959 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2960 relocs. */
6de2ae4a
L		 2961 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2962 htab->elf.sgot->size += 8;
2963 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2964 }
2965 else
2966 htab->tls_ldm_got.offset = -1;
2967
0c715baa
AM		 2968 /* Allocate global sym .plt and .got entries, and space for global
2969 sym dynamic relocs. */
eb4ff4d6 2970 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2971
c25bc9fc
L		 2972 /* Allocate .plt and .got entries, and space for local symbols. */
2973 htab_traverse (htab->loc_hash_table,
2974 elf_i386_allocate_local_dynrelocs,
2975 info);
2976
67a4f2b7
AO		 2977 /* For every jump slot reserved in the sgotplt, reloc_count is
2978 incremented. However, when we reserve space for TLS descriptors,
2979 it's not incremented, so in order to compute the space reserved
2980 for them, it suffices to multiply the reloc count by the jump
e1f98742 2981 slot size.
caa0075c 2982
e1f98742
L		 2983 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2984 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2985 if (htab->elf.srelplt)
e1f98742
L		 2986 {
2987 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2988 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2989 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2990 }
2991 else if (htab->elf.irelplt)
2992 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2993
67a4f2b7 2994
a7b16ceb
L		 2995 if (htab->elf.sgotplt)
2996 {
2997 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2998 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 2999 if ((htab->elf.hgot == NULL
3000 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 3001 && (htab->elf.sgotplt->size
3002 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 3003 && (htab->elf.splt == NULL
3004 || htab->elf.splt->size == 0)
3005 && (htab->elf.sgot == NULL
3006 || htab->elf.sgot->size == 0)
3007 && (htab->elf.iplt == NULL
3008 || htab->elf.iplt->size == 0)
3009 && (htab->elf.igotplt == NULL
3010 || htab->elf.igotplt->size == 0))
3011 htab->elf.sgotplt->size = 0;
3012 }
3013
9a2a56cc
AM		 3014
3015 if (htab->plt_eh_frame != NULL
3016 && htab->elf.splt != NULL
3017 && htab->elf.splt->size != 0
3018 && !bfd_is_abs_section (htab->elf.splt->output_section)
3019 && _bfd_elf_eh_frame_present (info))
3020 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
3021
5a15f56f
AM		 3022 /* We now have determined the sizes of the various dynamic sections.
3023 Allocate memory for them. */
b34976b6 3024 relocs = FALSE;
252b5132
RH		 3025 for (s = dynobj->sections; s != NULL; s = s->next)
3026 {
eac338cf
PB		 3027 bfd_boolean strip_section = TRUE;
3028
252b5132
RH		 3029 if ((s->flags & SEC_LINKER_CREATED) == 0)
3030 continue;
3031
6de2ae4a 3032 if (s == htab->elf.splt
9a2a56cc 3033 || s == htab->elf.sgot)
252b5132 3034 {
6725bdbf
AM		 3035 /* Strip this section if we don't need it; see the
3036 comment below. */
eac338cf
PB		 3037 /* We'd like to strip these sections if they aren't needed, but if
3038 we've exported dynamic symbols from them we must leave them.
3039 It's too late to tell BFD to get rid of the symbols. */
3040
7325306f 3041 if (htab->elf.hplt != NULL)
eac338cf 3042 strip_section = FALSE;
252b5132 3043 }
9a2a56cc
AM		 3044 else if (s == htab->elf.sgotplt
3045 || s == htab->elf.iplt
3046 || s == htab->elf.igotplt
dd7e64d4 3047 || s == htab->plt_got
9a2a56cc
AM		 3048 || s == htab->plt_eh_frame
3049 || s == htab->sdynbss)
3050 {
3051 /* Strip these too. */
3052 }
0112cd26 3053 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 3054 {
6de2ae4a
L		 3055 if (s->size != 0
3056 && s != htab->elf.srelplt
3057 && s != htab->srelplt2)
b34976b6 3058 relocs = TRUE;
252b5132 3059
0ac8d2ca
AM		 3060 /* We use the reloc_count field as a counter if we need
3061 to copy relocs into the output file. */
5ae0bfb6 3062 s->reloc_count = 0;
252b5132 3063 }
6725bdbf 3064 else
252b5132
RH		 3065 {
3066 /* It's not one of our sections, so don't allocate space. */
3067 continue;
3068 }
3069
c456f082 3070 if (s->size == 0)
252b5132 3071 {
0ac8d2ca
AM		 3072 /* If we don't need this section, strip it from the
3073 output file. This is mostly to handle .rel.bss and
3074 .rel.plt. We must create both sections in
3075 create_dynamic_sections, because they must be created
3076 before the linker maps input sections to output
3077 sections. The linker does that before
3078 adjust_dynamic_symbol is called, and it is that
3079 function which decides whether anything needs to go
3080 into these sections. */
c456f082
AM		 3081 if (strip_section)
3082 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3083 continue;
3084 }
3085
c456f082
AM		 3086 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3087 continue;
3088
f69da49f
AM		 3089 /* Allocate memory for the section contents. We use bfd_zalloc
3090 here in case unused entries are not reclaimed before the
3091 section's contents are written out. This should not happen,
3092 but this way if it does, we get a R_386_NONE reloc instead
3093 of garbage. */
a50b1753 3094 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 3095 if (s->contents == NULL)
b34976b6 3096 return FALSE;
252b5132
RH		 3097 }
3098
e41b3a13 3099 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3100 && htab->plt_eh_frame->contents != NULL)
3101 {
3102 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
3103 sizeof (elf_i386_eh_frame_plt));
3104 bfd_put_32 (dynobj, htab->elf.splt->size,
3105 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3106 }
e41b3a13 3107
ebe50bae 3108 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3109 {
3110 /* Add some entries to the .dynamic section. We fill in the
3111 values later, in elf_i386_finish_dynamic_sections, but we
3112 must add the entries now so that we get the correct size for
3113 the .dynamic section. The DT_DEBUG entry is filled in by the
3114 dynamic linker and used by the debugger. */
dc810e39 3115#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3116 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3117
36af4a4e 3118 if (info->executable)
252b5132 3119 {
dc810e39 3120 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3121 return FALSE;
252b5132
RH		 3122 }
3123
6de2ae4a 3124 if (htab->elf.splt->size != 0)
252b5132 3125 {
7c1e8d3e
L		 3126 /* DT_PLTGOT is used by prelink even if there is no PLT
3127 relocation. */
3128 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 3129 return FALSE;
7c1e8d3e
L		 3130
3131 if (htab->elf.srelplt->size != 0)
3132 {
3133 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3134 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3135 || !add_dynamic_entry (DT_JMPREL, 0))
3136 return FALSE;
3137 }
252b5132
RH		 3138 }
3139
3140 if (relocs)
3141 {
dc810e39
AM		 3142 if (!add_dynamic_entry (DT_REL, 0)
3143 || !add_dynamic_entry (DT_RELSZ, 0)
3144 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3145 return FALSE;
252b5132 3146
0c715baa
AM		 3147 /* If any dynamic relocs apply to a read-only section,
3148 then we need a DT_TEXTREL entry. */
248866a8 3149 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3150 elf_link_hash_traverse (&htab->elf,
3151 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3152
3153 if ((info->flags & DF_TEXTREL) != 0)
3154 {
3155 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3156 return FALSE;
0c715baa 3157 }
252b5132 3158 }
23209a78 3159 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3160 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3161 return FALSE;
252b5132 3162 }
dc810e39 3163#undef add_dynamic_entry
252b5132 3164
b34976b6 3165 return TRUE;
252b5132
RH		 3166}
3167
67a4f2b7
AO		 3168static bfd_boolean
3169elf_i386_always_size_sections (bfd *output_bfd,
3170 struct bfd_link_info *info)
3171{
3172 asection *tls_sec = elf_hash_table (info)->tls_sec;
3173
3174 if (tls_sec)
3175 {
3176 struct elf_link_hash_entry *tlsbase;
3177
3178 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3179 "_TLS_MODULE_BASE_",
3180 FALSE, FALSE, FALSE);
3181
3182 if (tlsbase && tlsbase->type == STT_TLS)
3183 {
4dfe6ac6 3184 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3185 struct bfd_link_hash_entry *bh = NULL;
3186 const struct elf_backend_data *bed
3187 = get_elf_backend_data (output_bfd);
3188
4dfe6ac6
NC		 3189 htab = elf_i386_hash_table (info);
3190 if (htab == NULL)
3191 return FALSE;
3192
67a4f2b7
AO		 3193 if (!(_bfd_generic_link_add_one_symbol
3194 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3195 tls_sec, 0, NULL, FALSE,
3196 bed->collect, &bh)))
3197 return FALSE;
9f03412a 3198
4dfe6ac6 3199 htab->tls_module_base = bh;
9f03412a 3200
67a4f2b7
AO		 3201 tlsbase = (struct elf_link_hash_entry *)bh;
3202 tlsbase->def_regular = 1;
3203 tlsbase->other = STV_HIDDEN;
576fa883 3204 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3205 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3206 }
3207 }
3208
3209 return TRUE;
3210}
3211
38701953
AM		 3212/* Set the correct type for an x86 ELF section. We do this by the
3213 section name, which is a hack, but ought to work. */
3214
b34976b6 3215static bfd_boolean
55fd94b0
AM		 3216elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3217 Elf_Internal_Shdr *hdr,
3218 asection *sec)
38701953 3219{
91d6fa6a 3220 const char *name;
38701953
AM		 3221
3222 name = bfd_get_section_name (abfd, sec);
3223
3224 /* This is an ugly, but unfortunately necessary hack that is
3225 needed when producing EFI binaries on x86. It tells
3226 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3227 containing ELF relocation info. We need this hack in order to
3228 be able to generate ELF binaries that can be translated into
3229 EFI applications (which are essentially COFF objects). Those
3230 files contain a COFF ".reloc" section inside an ELFNN object,
3231 which would normally cause BFD to segfault because it would
3232 attempt to interpret this section as containing relocation
3233 entries for section "oc". With this hack enabled, ".reloc"
3234 will be treated as a normal data section, which will avoid the
3235 segfault. However, you won't be able to create an ELFNN binary
3236 with a section named "oc" that needs relocations, but that's
3237 the kind of ugly side-effects you get when detecting section
3238 types based on their names... In practice, this limitation is
3239 unlikely to bite. */
3240 if (strcmp (name, ".reloc") == 0)
3241 hdr->sh_type = SHT_PROGBITS;
3242
b34976b6 3243 return TRUE;
38701953
AM		 3244}
3245
9f03412a
AO		 3246/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3247 executables. Rather than setting it to the beginning of the TLS
3248 section, we have to set it to the end. This function may be called
3249 multiple times, it is idempotent. */
3250
3251static void
eb4ff4d6 3252elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3253{
4dfe6ac6 3254 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3255 struct bfd_link_hash_entry *base;
3256
3257 if (!info->executable)
3258 return;
3259
4dfe6ac6
NC		 3260 htab = elf_i386_hash_table (info);
3261 if (htab == NULL)
3262 return;
9f03412a 3263
4dfe6ac6
NC		 3264 base = htab->tls_module_base;
3265 if (base == NULL)
9f03412a
AO		 3266 return;
3267
4dfe6ac6 3268 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3269}
3270
13ae64f3
JJ		 3271/* Return the base VMA address which should be subtracted from real addresses
3272 when resolving @dtpoff relocation.
3273 This is PT_TLS segment p_vaddr. */
3274
3275static bfd_vma
eb4ff4d6 3276elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3277{
e1918d23
AM		 3278 /* If tls_sec is NULL, we should have signalled an error already. */
3279 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3280 return 0;
e1918d23 3281 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3282}
3283
3284/* Return the relocation value for @tpoff relocation
3285 if STT_TLS virtual address is ADDRESS. */
3286
3287static bfd_vma
eb4ff4d6 3288elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3289{
e1918d23 3290 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3291 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3292 bfd_vma static_tls_size;
13ae64f3 3293
e1918d23
AM		 3294 /* If tls_sec is NULL, we should have signalled an error already. */
3295 if (htab->tls_sec == NULL)
6a30718d 3296 return 0;
7dc98aea
RO		 3297
3298 /* Consider special static TLS alignment requirements. */
3299 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3300 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3301}
3302
252b5132
RH		 3303/* Relocate an i386 ELF section. */
3304
b34976b6 3305static bfd_boolean
55fd94b0
AM		 3306elf_i386_relocate_section (bfd *output_bfd,
3307 struct bfd_link_info *info,
3308 bfd *input_bfd,
3309 asection *input_section,
3310 bfd_byte *contents,
3311 Elf_Internal_Rela *relocs,
3312 Elf_Internal_Sym *local_syms,
3313 asection **local_sections)
252b5132 3314{
6725bdbf 3315 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3316 Elf_Internal_Shdr *symtab_hdr;
3317 struct elf_link_hash_entry **sym_hashes;
3318 bfd_vma *local_got_offsets;
67a4f2b7 3319 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3320 Elf_Internal_Rela *rel;
3321 Elf_Internal_Rela *relend;
3348747a 3322 bfd_boolean is_vxworks_tls;
25e762b9 3323 unsigned plt_entry_size;
252b5132 3324
0ffa91dd 3325 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3326
6725bdbf 3327 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3328 if (htab == NULL)
3329 return FALSE;
0ffa91dd 3330 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3331 sym_hashes = elf_sym_hashes (input_bfd);
3332 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3333 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3334 /* We have to handle relocations in vxworks .tls_vars sections
3335 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3336 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3337 && info->shared
3348747a
NS		 3338 && !strcmp (input_section->output_section->name,
3339 ".tls_vars"));
252b5132 3340
eb4ff4d6 3341 elf_i386_set_tls_module_base (info);
9f03412a 3342
25e762b9
RM		 3343 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3344
252b5132
RH		 3345 rel = relocs;
3346 relend = relocs + input_section->reloc_count;
3347 for (; rel < relend; rel++)
3348 {
13ae64f3 3349 unsigned int r_type;
252b5132
RH		 3350 reloc_howto_type *howto;
3351 unsigned long r_symndx;
3352 struct elf_link_hash_entry *h;
dd7e64d4 3353 struct elf_i386_link_hash_entry *eh;
252b5132
RH		 3354 Elf_Internal_Sym *sym;
3355 asection *sec;
dd7e64d4 3356 bfd_vma off, offplt, plt_offset;
252b5132 3357 bfd_vma relocation;
b34976b6 3358 bfd_boolean unresolved_reloc;
252b5132 3359 bfd_reloc_status_type r;
1b452ec6 3360 unsigned int indx;
13ae64f3 3361 int tls_type;
1788fc08 3362 bfd_vma st_size;
dd7e64d4 3363 asection *resolved_plt;
252b5132
RH		 3364
3365 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3366 if (r_type == R_386_GNU_VTINHERIT
3367 || r_type == R_386_GNU_VTENTRY)
252b5132 3368 continue;
dc47f327 3369
55fd94b0 3370 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3371 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3372 >= R_386_ext - R_386_standard)
3373 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3374 >= R_386_irelative - R_386_ext))
252b5132 3375 {
6ba842b6 3376 (*_bfd_error_handler)
d003868e
AM		 3377 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3378 input_bfd, input_section, r_type);
252b5132 3379 bfd_set_error (bfd_error_bad_value);
b34976b6 3380 return FALSE;
252b5132 3381 }
1b452ec6 3382 howto = elf_howto_table + indx;
252b5132
RH		 3383
3384 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3385 h = NULL;
3386 sym = NULL;
3387 sec = NULL;
b34976b6 3388 unresolved_reloc = FALSE;
252b5132
RH		 3389 if (r_symndx < symtab_hdr->sh_info)
3390 {
3391 sym = local_syms + r_symndx;
3392 sec = local_sections[r_symndx];
3393 relocation = (sec->output_section->vma
3394 + sec->output_offset
3395 + sym->st_value);
1788fc08 3396 st_size = sym->st_size;
ab96bf03
AM		 3397
3398 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3399 && ((sec->flags & SEC_MERGE) != 0
3400 || (info->relocatable
3401 && sec->output_offset != 0)))
f8df10f4 3402 {
f8df10f4 3403 bfd_vma addend;
4a335f3d 3404 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3405
4a335f3d 3406 switch (howto->size)
f8df10f4 3407 {
4a335f3d
AM		 3408 case 0:
3409 addend = bfd_get_8 (input_bfd, where);
3410 if (howto->pc_relative)
3411 {
3412 addend = (addend ^ 0x80) - 0x80;
3413 addend += 1;
3414 }
3415 break;
3416 case 1:
3417 addend = bfd_get_16 (input_bfd, where);
3418 if (howto->pc_relative)
3419 {
3420 addend = (addend ^ 0x8000) - 0x8000;
3421 addend += 2;
3422 }
3423 break;
3424 case 2:
3425 addend = bfd_get_32 (input_bfd, where);
3426 if (howto->pc_relative)
3427 {
3428 addend = (addend ^ 0x80000000) - 0x80000000;
3429 addend += 4;
3430 }
3431 break;
3432 default:
3433 abort ();
f8df10f4
JJ		 3434 }
3435
ab96bf03
AM		 3436 if (info->relocatable)
3437 addend += sec->output_offset;
3438 else
3439 {
3440 asection *msec = sec;
3441 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3442 addend);
3443 addend -= relocation;
3444 addend += msec->output_section->vma + msec->output_offset;
3445 }
4a335f3d
AM		 3446
3447 switch (howto->size)
3448 {
3449 case 0:
16a10388 3450 /* FIXME: overflow checks. */
4a335f3d
AM		 3451 if (howto->pc_relative)
3452 addend -= 1;
3453 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3454 break;
3455 case 1:
3456 if (howto->pc_relative)
3457 addend -= 2;
3458 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3459 break;
3460 case 2:
3461 if (howto->pc_relative)
3462 addend -= 4;
3463 bfd_put_32 (input_bfd, addend, where);
3464 break;
3465 }
f8df10f4 3466 }
1f85278f
L		 3467 else if (!info->relocatable
3468 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3469 {
3470 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3471 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3472 FALSE);
c25bc9fc
L		 3473 if (h == NULL)
3474 abort ();
3475
23209a78 3476 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3477 h->root.u.def.value = sym->st_value;
3478 h->root.u.def.section = sec;
3479 }
252b5132
RH		 3480 }
3481 else
3482 {
3d540e93 3483 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3484 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3485
b2a8e766
AM		 3486 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3487 r_symndx, symtab_hdr, sym_hashes,
3488 h, sec, relocation,
62d887d4 3489 unresolved_reloc, warned, ignored);
1788fc08 3490 st_size = h->size;
252b5132
RH		 3491 }
3492
dbaa2011 3493 if (sec != NULL && discarded_section (sec))
0672748a 3494 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3495 rel, 1, relend, howto, 0, contents);
9635fe29 3496
ab96bf03
AM		 3497 if (info->relocatable)
3498 continue;
3499
cbe950e9
L		 3500 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3501 it here if it is defined in a non-shared object. */
3502 if (h != NULL
3503 && h->type == STT_GNU_IFUNC
3504 && h->def_regular)
3505 {
3506 asection *plt, *gotplt, *base_got;
3507 bfd_vma plt_index;
4c544807 3508 const char *name;
cbe950e9 3509
97dc35c8
L		 3510 if ((input_section->flags & SEC_ALLOC) == 0)
3511 {
3512 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3513 sections because such sections are not SEC_ALLOC and
3514 thus ld.so will not process them. */
3515 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 3516 continue;
97dc35c8
L		 3517 abort ();
3518 }
3519 else if (h->plt.offset == (bfd_vma) -1)
cbe950e9
L		 3520 abort ();
3521
3522 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3523 if (htab->elf.splt != NULL)
cbe950e9 3524 {
6de2ae4a
L		 3525 plt = htab->elf.splt;
3526 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3527 }
3528 else
3529 {
6de2ae4a
L		 3530 plt = htab->elf.iplt;
3531 gotplt = htab->elf.igotplt;
cbe950e9
L		 3532 }
3533
3534 relocation = (plt->output_section->vma
3535 + plt->output_offset + h->plt.offset);
3536
3537 switch (r_type)
3538 {
3539 default:
4c544807
L		 3540 if (h->root.root.string)
3541 name = h->root.root.string;
3542 else
3543 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3544 NULL);
cbe950e9
L		 3545 (*_bfd_error_handler)
3546 (_("%B: relocation %s against STT_GNU_IFUNC "
3547 "symbol `%s' isn't handled by %s"), input_bfd,
3548 elf_howto_table[r_type].name,
4c544807 3549 name, __FUNCTION__);
cbe950e9
L		 3550 bfd_set_error (bfd_error_bad_value);
3551 return FALSE;
3552
3553 case R_386_32:
710ab287 3554 /* Generate dynamic relcoation only when there is a
c293fa49 3555 non-GOT reference in a shared object. */
710ab287
L		 3556 if (info->shared && h->non_got_ref)
3557 {
3558 Elf_Internal_Rela outrel;
710ab287
L		 3559 asection *sreloc;
3560 bfd_vma offset;
3561
c25bc9fc
L		 3562 /* Need a dynamic relocation to get the real function
3563 adddress. */
710ab287
L		 3564 offset = _bfd_elf_section_offset (output_bfd,
3565 info,
3566 input_section,
3567 rel->r_offset);
3568 if (offset == (bfd_vma) -1
3569 || offset == (bfd_vma) -2)
3570 abort ();
3571
3572 outrel.r_offset = (input_section->output_section->vma
3573 + input_section->output_offset
3574 + offset);
3575
3576 if (h->dynindx == -1
44c4ea11
L		 3577 || h->forced_local
3578 || info->executable)
710ab287
L		 3579 {
3580 /* This symbol is resolved locally. */
56b8aada
L		 3581 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3582 bfd_put_32 (output_bfd,
3583 (h->root.u.def.value
3584 + h->root.u.def.section->output_section->vma
3585 + h->root.u.def.section->output_offset),
3586 contents + offset);
710ab287
L		 3587 }
3588 else
56b8aada 3589 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3590
6de2ae4a 3591 sreloc = htab->elf.irelifunc;
59d6ffb2 3592 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3593
3594 /* If this reloc is against an external symbol, we
3595 do not want to fiddle with the addend. Otherwise,
3596 we need to include the symbol value so that it
3597 becomes an addend for the dynamic reloc. For an
3598 internal symbol, we have updated addend. */
56b8aada 3599 continue;
710ab287 3600 }
d59a60e9 3601 /* FALLTHROUGH */
cbe950e9
L		 3602 case R_386_PC32:
3603 case R_386_PLT32:
3604 goto do_relocation;
3605
3606 case R_386_GOT32:
6de2ae4a 3607 base_got = htab->elf.sgot;
cbe950e9
L		 3608 off = h->got.offset;
3609
7afd84dc 3610 if (base_got == NULL)
cbe950e9
L		 3611 abort ();
3612
7afd84dc 3613 if (off == (bfd_vma) -1)
cbe950e9 3614 {
7afd84dc
L		 3615 /* We can't use h->got.offset here to save state, or
3616 even just remember the offset, as finish_dynamic_symbol
3617 would use that as offset into .got. */
6bbec505 3618
6de2ae4a 3619 if (htab->elf.splt != NULL)
7afd84dc 3620 {
25e762b9 3621 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3622 off = (plt_index + 3) * 4;
6de2ae4a 3623 base_got = htab->elf.sgotplt;
7afd84dc 3624 }
cbe950e9
L		 3625 else
3626 {
25e762b9 3627 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3628 off = plt_index * 4;
6de2ae4a 3629 base_got = htab->elf.igotplt;
7afd84dc
L		 3630 }
3631
3632 if (h->dynindx == -1
3633 || h->forced_local
3634 || info->symbolic)
3635 {
3636 /* This references the local defitionion. We must
3637 initialize this entry in the global offset table.
3638 Since the offset must always be a multiple of 8,
3639 we use the least significant bit to record
3640 whether we have initialized it already.
3641
3642 When doing a dynamic link, we create a .rela.got
3643 relocation entry to initialize the value. This
3644 is done in the finish_dynamic_symbol routine. */
3645 if ((off & 1) != 0)
3646 off &= ~1;
3647 else
3648 {
3649 bfd_put_32 (output_bfd, relocation,
3650 base_got->contents + off);
3651 h->got.offset |= 1;
3652 }
cbe950e9 3653 }
cbe950e9 3654
7afd84dc 3655 relocation = off;
cbe950e9 3656
7afd84dc 3657 /* Adjust for static executables. */
6de2ae4a 3658 if (htab->elf.splt == NULL)
7afd84dc
L		 3659 relocation += gotplt->output_offset;
3660 }
3661 else
0018b0a3
L		 3662 {
3663 relocation = (base_got->output_section->vma
3664 + base_got->output_offset + off
3665 - gotplt->output_section->vma
3666 - gotplt->output_offset);
3667 /* Adjust for static executables. */
6de2ae4a 3668 if (htab->elf.splt == NULL)
0018b0a3
L		 3669 relocation += gotplt->output_offset;
3670 }
3671
cbe950e9
L		 3672 goto do_relocation;
3673
3674 case R_386_GOTOFF:
3675 relocation -= (gotplt->output_section->vma
3676 + gotplt->output_offset);
3677 goto do_relocation;
3678 }
3679 }
3680
252b5132
RH		 3681 switch (r_type)
3682 {
3683 case R_386_GOT32:
3684 /* Relocation is to the entry for this symbol in the global
3685 offset table. */
6de2ae4a 3686 if (htab->elf.sgot == NULL)
ffb2e45b 3687 abort ();
252b5132
RH		 3688
3689 if (h != NULL)
3690 {
b34976b6 3691 bfd_boolean dyn;
252b5132
RH		 3692
3693 off = h->got.offset;
ebe50bae 3694 dyn = htab->elf.dynamic_sections_created;
26e41594 3695 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3696 || (info->shared
586119b3 3697 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3698 || (ELF_ST_VISIBILITY (h->other)
3699 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3700 {
3701 /* This is actually a static link, or it is a
3702 -Bsymbolic link and the symbol is defined
3703 locally, or the symbol was forced to be local
3704 because of a version file. We must initialize
3705 this entry in the global offset table. Since the
3706 offset must always be a multiple of 4, we use the
3707 least significant bit to record whether we have
3708 initialized it already.
3709
3710 When doing a dynamic link, we create a .rel.got
3711 relocation entry to initialize the value. This
3712 is done in the finish_dynamic_symbol routine. */
3713 if ((off & 1) != 0)
3714 off &= ~1;
3715 else
3716 {
3717 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3718 htab->elf.sgot->contents + off);
252b5132
RH		 3719 h->got.offset |= 1;
3720 }
3721 }
8c694914 3722 else
b34976b6 3723 unresolved_reloc = FALSE;
252b5132
RH		 3724 }
3725 else
3726 {
ffb2e45b
AM		 3727 if (local_got_offsets == NULL)
3728 abort ();
252b5132
RH		 3729
3730 off = local_got_offsets[r_symndx];
3731
3732 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3733 the least significant bit to record whether we have
3734 already generated the necessary reloc. */
252b5132
RH		 3735 if ((off & 1) != 0)
3736 off &= ~1;
3737 else
3738 {
6725bdbf 3739 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3740 htab->elf.sgot->contents + off);
252b5132
RH		 3741
3742 if (info->shared)
3743 {
947216bf
AM		 3744 asection *s;
3745 Elf_Internal_Rela outrel;
252b5132 3746
6de2ae4a 3747 s = htab->elf.srelgot;
947216bf 3748 if (s == NULL)
ffb2e45b 3749 abort ();
252b5132 3750
6de2ae4a
L		 3751 outrel.r_offset = (htab->elf.sgot->output_section->vma
3752 + htab->elf.sgot->output_offset
252b5132
RH		 3753 + off);
3754 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 3755 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 3756 }
3757
3758 local_got_offsets[r_symndx] |= 1;
3759 }
252b5132
RH		 3760 }
3761
ffb2e45b
AM		 3762 if (off >= (bfd_vma) -2)
3763 abort ();
3764
6de2ae4a
L		 3765 relocation = htab->elf.sgot->output_section->vma
3766 + htab->elf.sgot->output_offset + off
3767 - htab->elf.sgotplt->output_section->vma
3768 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3769 break;
3770
3771 case R_386_GOTOFF:
3772 /* Relocation is relative to the start of the global offset
3773 table. */
3774
3d949995
L		 3775 /* Check to make sure it isn't a protected function or data
3776 symbol for shared library since it may not be local when
3777 used as function address or with copy relocation. We also
e3c0e327 3778 need to make sure that a symbol is referenced locally. */
d5597ebc 3779 if (!info->executable && h)
90f487df 3780 {
41bed6dd
L		 3781 if (!h->def_regular)
3782 {
3783 const char *v;
3784
3785 switch (ELF_ST_VISIBILITY (h->other))
3786 {
3787 case STV_HIDDEN:
3788 v = _("hidden symbol");
3789 break;
3790 case STV_INTERNAL:
3791 v = _("internal symbol");
3792 break;
3793 case STV_PROTECTED:
3794 v = _("protected symbol");
3795 break;
3796 default:
3797 v = _("symbol");
3798 break;
3799 }
3800
3801 (*_bfd_error_handler)
3802 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3803 input_bfd, v, h->root.root.string);
3804 bfd_set_error (bfd_error_bad_value);
3805 return FALSE;
3806 }
d5597ebc 3807 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
3d949995
L		 3808 && (h->type == STT_FUNC
3809 || h->type == STT_OBJECT)
41bed6dd
L		 3810 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3811 {
3812 (*_bfd_error_handler)
3d949995
L		 3813 (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
3814 input_bfd,
3815 h->type == STT_FUNC ? "function" : "data",
3816 h->root.root.string);
41bed6dd
L		 3817 bfd_set_error (bfd_error_bad_value);
3818 return FALSE;
3819 }
90f487df
L		 3820 }
3821
8c37241b
JJ		 3822 /* Note that sgot is not involved in this
3823 calculation. We always want the start of .got.plt. If we
3824 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3825 permitted by the ABI, we might have to change this
3826 calculation. */
6de2ae4a
L		 3827 relocation -= htab->elf.sgotplt->output_section->vma
3828 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3829 break;
3830
3831 case R_386_GOTPC:
3832 /* Use global offset table as symbol value. */
6de2ae4a
L		 3833 relocation = htab->elf.sgotplt->output_section->vma
3834 + htab->elf.sgotplt->output_offset;
b34976b6 3835 unresolved_reloc = FALSE;
252b5132
RH		 3836 break;
3837
3838 case R_386_PLT32:
3839 /* Relocation is to the entry for this symbol in the
3840 procedure linkage table. */
3841
dd5724d5 3842 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3843 without using the procedure linkage table. */
252b5132
RH		 3844 if (h == NULL)
3845 break;
3846
dd7e64d4
L		 3847 eh = (struct elf_i386_link_hash_entry *) h;
3848 if ((h->plt.offset == (bfd_vma) -1
3849 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 3850 || htab->elf.splt == NULL)
252b5132
RH		 3851 {
3852 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3853 happens when statically linking PIC code, or when
3854 using -Bsymbolic. */
252b5132
RH		 3855 break;
3856 }
3857
dd7e64d4
L		 3858 if (h->plt.offset != (bfd_vma) -1)
3859 {
3860 resolved_plt = htab->elf.splt;
3861 plt_offset = h->plt.offset;
3862 }
3863 else
3864 {
3865 resolved_plt = htab->plt_got;
3866 plt_offset = eh->plt_got.offset;
3867 }
3868
3869 relocation = (resolved_plt->output_section->vma
3870 + resolved_plt->output_offset
3871 + plt_offset);
b34976b6 3872 unresolved_reloc = FALSE;
252b5132
RH		 3873 break;
3874
1788fc08 3875 case R_386_SIZE32:
1788fc08
L		 3876 /* Set to symbol size. */
3877 relocation = st_size;
3878 /* Fall through. */
3879
252b5132
RH		 3880 case R_386_32:
3881 case R_386_PC32:
3348747a
NS		 3882 if ((input_section->flags & SEC_ALLOC) == 0
3883 || is_vxworks_tls)
ec338859
AM		 3884 break;
3885
12d0ee4a 3886 if ((info->shared
ef5aade5
L		 3887 && (h == NULL
3888 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3889 || h->root.type != bfd_link_hash_undefweak)
1788fc08 3890 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3891 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3892 || (ELIMINATE_COPY_RELOCS
3893 && !info->shared
12d0ee4a
AM		 3894 && h != NULL
3895 && h->dynindx != -1
f5385ebf
AM		 3896 && !h->non_got_ref
3897 && ((h->def_dynamic
3898 && !h->def_regular)
28d0b90e 3899 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3900 || h->root.type == bfd_link_hash_undefined)))
252b5132 3901 {
947216bf 3902 Elf_Internal_Rela outrel;
b34976b6 3903 bfd_boolean skip, relocate;
0c715baa 3904 asection *sreloc;
252b5132
RH		 3905
3906 /* When generating a shared object, these relocations
3907 are copied into the output file to be resolved at run
3908 time. */
3909
b34976b6
AM		 3910 skip = FALSE;
3911 relocate = FALSE;
252b5132 3912
c629eae0
JJ		 3913 outrel.r_offset =
3914 _bfd_elf_section_offset (output_bfd, info, input_section,
3915 rel->r_offset);
3916 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3917 skip = TRUE;
0bb2d96a 3918 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3919 skip = TRUE, relocate = TRUE;
252b5132
RH		 3920 outrel.r_offset += (input_section->output_section->vma
3921 + input_section->output_offset);
3922
3923 if (skip)
0bb2d96a 3924 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3925 else if (h != NULL
3926 && h->dynindx != -1
3927 && (r_type == R_386_PC32
3928 || !info->shared
55255dae 3929 || !SYMBOLIC_BIND (info, h)
f5385ebf 3930 || !h->def_regular))
0bb2d96a 3931 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3932 else
3933 {
5a15f56f 3934 /* This symbol is local, or marked to become local. */
b34976b6 3935 relocate = TRUE;
5a15f56f 3936 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3937 }
3938
cbe950e9 3939 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3940
62d78908
L		 3941 if (sreloc == NULL || sreloc->contents == NULL)
3942 {
3943 r = bfd_reloc_notsupported;
3944 goto check_relocation_error;
3945 }
0c715baa 3946
59d6ffb2 3947 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 3948
3949 /* If this reloc is against an external symbol, we do
3950 not want to fiddle with the addend. Otherwise, we
3951 need to include the symbol value so that it becomes
3952 an addend for the dynamic reloc. */
0f88be7a 3953 if (! relocate)
252b5132
RH		 3954 continue;
3955 }
252b5132
RH		 3956 break;
3957
37e55690 3958 case R_386_TLS_IE:
1d85728f 3959 if (!info->executable)
37e55690 3960 {
947216bf 3961 Elf_Internal_Rela outrel;
37e55690 3962 asection *sreloc;
37e55690
JJ		 3963
3964 outrel.r_offset = rel->r_offset
3965 + input_section->output_section->vma
3966 + input_section->output_offset;
3967 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3968 sreloc = elf_section_data (input_section)->sreloc;
3969 if (sreloc == NULL)
3970 abort ();
59d6ffb2 3971 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3972 }
3973 /* Fall through */
3974
13ae64f3 3975 case R_386_TLS_GD:
67a4f2b7
AO		 3976 case R_386_TLS_GOTDESC:
3977 case R_386_TLS_DESC_CALL:
13ae64f3 3978 case R_386_TLS_IE_32:
37e55690 3979 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3980 tls_type = GOT_UNKNOWN;
3981 if (h == NULL && local_got_offsets)
3982 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3983 else if (h != NULL)
142411ca 3984 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3985 if (tls_type == GOT_TLS_IE)
3986 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3987
3988 if (! elf_i386_tls_transition (info, input_bfd,
3989 input_section, contents,
3990 symtab_hdr, sym_hashes,
3991 &r_type, tls_type, rel,
4c544807 3992 relend, h, r_symndx))
142411ca 3993 return FALSE;
13ae64f3
JJ		 3994
3995 if (r_type == R_386_TLS_LE_32)
3996 {
82e51918 3997 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3998 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3999 {
142411ca 4000 unsigned int type;
13ae64f3
JJ		 4001 bfd_vma roff;
4002
4003 /* GD->LE transition. */
13ae64f3 4004 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4005 if (type == 0x04)
4006 {
4007 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4008 Change it into:
4009 movl %gs:0, %eax; subl $foo@tpoff, %eax
4010 (6 byte form of subl). */
13ae64f3
JJ		 4011 memcpy (contents + rel->r_offset - 3,
4012 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 4013 roff = rel->r_offset + 5;
13ae64f3
JJ		 4014 }
4015 else
4016 {
142411ca
L		 4017 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4018 Change it into:
4019 movl %gs:0, %eax; subl $foo@tpoff, %eax
4020 (6 byte form of subl). */
4021 memcpy (contents + rel->r_offset - 2,
4022 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
4023 roff = rel->r_offset + 6;
13ae64f3 4024 }
eb4ff4d6 4025 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 4026 contents + roff);
a3fadc9a 4027 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4028 rel++;
4029 continue;
4030 }
67a4f2b7
AO		 4031 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4032 {
4033 /* GDesc -> LE transition.
4034 It's originally something like:
4035 leal x@tlsdesc(%ebx), %eax
4036
4037 leal x@ntpoff, %eax
4038
4039 Registers other than %eax may be set up here. */
4040
142411ca 4041 unsigned int val;
67a4f2b7
AO		 4042 bfd_vma roff;
4043
67a4f2b7 4044 roff = rel->r_offset;
67a4f2b7 4045 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 4046
4047 /* Now modify the instruction as appropriate. */
4048 /* aoliva FIXME: remove the above and xor the byte
4049 below with 0x86. */
4050 bfd_put_8 (output_bfd, val ^ 0x86,
4051 contents + roff - 1);
eb4ff4d6 4052 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 4053 contents + roff);
4054 continue;
4055 }
4056 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4057 {
4058 /* GDesc -> LE transition.
4059 It's originally:
4060 call *(%eax)
4061 Turn it into:
142411ca 4062 xchg %ax,%ax */
67a4f2b7 4063
67a4f2b7 4064 bfd_vma roff;
6bbec505 4065
67a4f2b7 4066 roff = rel->r_offset;
10efb593 4067 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4068 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4069 continue;
4070 }
37e55690 4071 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 4072 {
142411ca 4073 unsigned int val;
13ae64f3
JJ		 4074
4075 /* IE->LE transition:
37e55690
JJ		 4076 Originally it can be one of:
4077 movl foo, %eax
4078 movl foo, %reg
4079 addl foo, %reg
4080 We change it into:
4081 movl $foo, %eax
4082 movl $foo, %reg
4083 addl $foo, %reg. */
37e55690 4084 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 4085 if (val == 0xa1)
4086 {
4087 /* movl foo, %eax. */
55fd94b0
AM		 4088 bfd_put_8 (output_bfd, 0xb8,
4089 contents + rel->r_offset - 1);
37e55690 4090 }
299bf759 4091 else
37e55690 4092 {
142411ca
L		 4093 unsigned int type;
4094
55fd94b0
AM		 4095 type = bfd_get_8 (input_bfd,
4096 contents + rel->r_offset - 2);
299bf759 4097 switch (type)
26e41594 4098 {
299bf759
L		 4099 case 0x8b:
4100 /* movl */
299bf759
L		 4101 bfd_put_8 (output_bfd, 0xc7,
4102 contents + rel->r_offset - 2);
4103 bfd_put_8 (output_bfd,
4104 0xc0 | ((val >> 3) & 7),
4105 contents + rel->r_offset - 1);
4106 break;
4107 case 0x03:
4108 /* addl */
299bf759
L		 4109 bfd_put_8 (output_bfd, 0x81,
4110 contents + rel->r_offset - 2);
4111 bfd_put_8 (output_bfd,
4112 0xc0 | ((val >> 3) & 7),
4113 contents + rel->r_offset - 1);
4114 break;
4115 default:
4116 BFD_FAIL ();
4117 break;
26e41594 4118 }
37e55690 4119 }
eb4ff4d6 4120 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4121 contents + rel->r_offset);
4122 continue;
4123 }
4124 else
4125 {
4126 unsigned int val, type;
4127
4128 /* {IE_32,GOTIE}->LE transition:
4129 Originally it can be one of:
13ae64f3 4130 subl foo(%reg1), %reg2
13ae64f3 4131 movl foo(%reg1), %reg2
37e55690 4132 addl foo(%reg1), %reg2
13ae64f3
JJ		 4133 We change it into:
4134 subl $foo, %reg2
37e55690
JJ		 4135 movl $foo, %reg2 (6 byte form)
4136 addl $foo, %reg2. */
13ae64f3
JJ		 4137 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4138 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4139 if (type == 0x8b)
4140 {
4141 /* movl */
13ae64f3
JJ		 4142 bfd_put_8 (output_bfd, 0xc7,
4143 contents + rel->r_offset - 2);
4144 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4145 contents + rel->r_offset - 1);
4146 }
4147 else if (type == 0x2b)
4148 {
4149 /* subl */
13ae64f3
JJ		 4150 bfd_put_8 (output_bfd, 0x81,
4151 contents + rel->r_offset - 2);
4152 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4153 contents + rel->r_offset - 1);
4154 }
37e55690
JJ		 4155 else if (type == 0x03)
4156 {
4157 /* addl */
4158 bfd_put_8 (output_bfd, 0x81,
4159 contents + rel->r_offset - 2);
4160 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4161 contents + rel->r_offset - 1);
4162 }
13ae64f3
JJ		 4163 else
4164 BFD_FAIL ();
37e55690 4165 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4166 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4167 contents + rel->r_offset);
4168 else
eb4ff4d6 4169 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4170 contents + rel->r_offset);
13ae64f3
JJ		 4171 continue;
4172 }
4173 }
4174
6de2ae4a 4175 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4176 abort ();
4177
4178 if (h != NULL)
67a4f2b7
AO		 4179 {
4180 off = h->got.offset;
4181 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4182 }
13ae64f3
JJ		 4183 else
4184 {
4185 if (local_got_offsets == NULL)
4186 abort ();
4187
4188 off = local_got_offsets[r_symndx];
67a4f2b7 4189 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4190 }
4191
4192 if ((off & 1) != 0)
4193 off &= ~1;
26e41594 4194 else
13ae64f3 4195 {
947216bf 4196 Elf_Internal_Rela outrel;
91d6fa6a 4197 int dr_type;
67a4f2b7 4198 asection *sreloc;
13ae64f3 4199
6de2ae4a 4200 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4201 abort ();
4202
67a4f2b7
AO		 4203 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4204
4205 if (GOT_TLS_GDESC_P (tls_type))
4206 {
59d6ffb2 4207 bfd_byte *loc;
67a4f2b7
AO		 4208 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4209 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4210 <= htab->elf.sgotplt->size);
4211 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4212 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4213 + offplt
4214 + htab->sgotplt_jump_table_size);
6de2ae4a 4215 sreloc = htab->elf.srelplt;
67a4f2b7 4216 loc = sreloc->contents;
5ae0bfb6
RS		 4217 loc += (htab->next_tls_desc_index++
4218 * sizeof (Elf32_External_Rel));
67a4f2b7 4219 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4220 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4221 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4222 if (indx == 0)
4223 {
4224 BFD_ASSERT (! unresolved_reloc);
4225 bfd_put_32 (output_bfd,
eb4ff4d6 4226 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4227 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4228 + htab->sgotplt_jump_table_size + 4);
4229 }
4230 else
4231 {
4232 bfd_put_32 (output_bfd, 0,
6de2ae4a 4233 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4234 + htab->sgotplt_jump_table_size + 4);
4235 }
4236 }
4237
6de2ae4a 4238 sreloc = htab->elf.srelgot;
67a4f2b7 4239
6de2ae4a
L		 4240 outrel.r_offset = (htab->elf.sgot->output_section->vma
4241 + htab->elf.sgot->output_offset + off);
13ae64f3 4242
67a4f2b7 4243 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4244 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4245 else if (GOT_TLS_GDESC_P (tls_type))
4246 goto dr_done;
37e55690
JJ		 4247 else if (tls_type == GOT_TLS_IE_POS)
4248 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4249 else
4250 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4251
37e55690 4252 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4253 bfd_put_32 (output_bfd,
4254 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4255 htab->elf.sgot->contents + off);
37e55690 4256 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4257 bfd_put_32 (output_bfd,
eb4ff4d6 4258 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4259 htab->elf.sgot->contents + off);
67a4f2b7 4260 else if (dr_type != R_386_TLS_DESC)
c366c25e 4261 bfd_put_32 (output_bfd, 0,
6de2ae4a 4262 htab->elf.sgot->contents + off);
13ae64f3 4263 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4264
59d6ffb2 4265 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4266
67a4f2b7 4267 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4268 {
4269 if (indx == 0)
4270 {
82e51918 4271 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4272 bfd_put_32 (output_bfd,
eb4ff4d6 4273 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4274 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4275 }
4276 else
4277 {
4278 bfd_put_32 (output_bfd, 0,
6de2ae4a 4279 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4280 outrel.r_info = ELF32_R_INFO (indx,
4281 R_386_TLS_DTPOFF32);
4282 outrel.r_offset += 4;
59d6ffb2 4283 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4284 }
4285 }
37e55690
JJ		 4286 else if (tls_type == GOT_TLS_IE_BOTH)
4287 {
4288 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4289 (indx == 0
4290 ? relocation - elf_i386_dtpoff_base (info)
4291 : 0),
6de2ae4a 4292 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4293 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4294 outrel.r_offset += 4;
59d6ffb2 4295 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4296 }
13ae64f3 4297
67a4f2b7 4298 dr_done:
13ae64f3
JJ		 4299 if (h != NULL)
4300 h->got.offset |= 1;
4301 else
4302 local_got_offsets[r_symndx] |= 1;
4303 }
4304
67a4f2b7
AO		 4305 if (off >= (bfd_vma) -2
4306 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4307 abort ();
67a4f2b7
AO		 4308 if (r_type == R_386_TLS_GOTDESC
4309 || r_type == R_386_TLS_DESC_CALL)
4310 {
4311 relocation = htab->sgotplt_jump_table_size + offplt;
4312 unresolved_reloc = FALSE;
4313 }
4314 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4315 {
6de2ae4a
L		 4316 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4317 + htab->elf.sgotplt->output_offset;
4318 relocation = htab->elf.sgot->output_section->vma
4319 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4320 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4321 && tls_type == GOT_TLS_IE_BOTH)
4322 relocation += 4;
4323 if (r_type == R_386_TLS_IE)
8c37241b 4324 relocation += g_o_t;
b34976b6 4325 unresolved_reloc = FALSE;
13ae64f3 4326 }
67a4f2b7 4327 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4328 {
4329 unsigned int val, type;
4330 bfd_vma roff;
4331
4332 /* GD->IE transition. */
13ae64f3 4333 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4334 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4335 if (type == 0x04)
4336 {
4337 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4338 Change it into:
4339 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4340 val >>= 3;
142411ca 4341 roff = rel->r_offset - 3;
13ae64f3
JJ		 4342 }
4343 else
4344 {
4345 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4346 Change it into:
4347 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4348 roff = rel->r_offset - 2;
4349 }
4350 memcpy (contents + roff,
4351 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4352 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4353 /* If foo is used only with foo@gotntpoff(%reg) and
4354 foo@indntpoff, but not with foo@gottpoff(%reg), change
4355 subl $foo@gottpoff(%reg), %eax
4356 into:
4357 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4358 if (tls_type == GOT_TLS_IE_POS)
4359 contents[roff + 6] = 0x03;
8c37241b 4360 bfd_put_32 (output_bfd,
6de2ae4a
L		 4361 htab->elf.sgot->output_section->vma
4362 + htab->elf.sgot->output_offset + off
4363 - htab->elf.sgotplt->output_section->vma
4364 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4365 contents + roff + 8);
4366 /* Skip R_386_PLT32. */
4367 rel++;
4368 continue;
4369 }
67a4f2b7
AO		 4370 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4371 {
4372 /* GDesc -> IE transition.
4373 It's originally something like:
4374 leal x@tlsdesc(%ebx), %eax
4375
4376 Change it to:
142411ca 4377 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4378 or:
4379 movl x@gottpoff(%ebx), %eax # before negl %eax
4380
4381 Registers other than %eax may be set up here. */
4382
67a4f2b7
AO		 4383 bfd_vma roff;
4384
4385 /* First, make sure it's a leal adding ebx to a 32-bit
4386 offset into any register, although it's probably
4387 almost always going to be eax. */
4388 roff = rel->r_offset;
67a4f2b7
AO		 4389
4390 /* Now modify the instruction as appropriate. */
4391 /* To turn a leal into a movl in the form we use it, it
4392 suffices to change the first byte from 0x8d to 0x8b.
4393 aoliva FIXME: should we decide to keep the leal, all
4394 we have to do is remove the statement below, and
4395 adjust the relaxation of R_386_TLS_DESC_CALL. */
4396 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4397
4398 if (tls_type == GOT_TLS_IE_BOTH)
4399 off += 4;
4400
4401 bfd_put_32 (output_bfd,
6de2ae4a
L		 4402 htab->elf.sgot->output_section->vma
4403 + htab->elf.sgot->output_offset + off
4404 - htab->elf.sgotplt->output_section->vma
4405 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4406 contents + roff);
4407 continue;
4408 }
4409 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4410 {
4411 /* GDesc -> IE transition.
4412 It's originally:
4413 call *(%eax)
4414
4415 Change it to:
142411ca 4416 xchg %ax,%ax
67a4f2b7
AO		 4417 or
4418 negl %eax
4419 depending on how we transformed the TLS_GOTDESC above.
4420 */
4421
67a4f2b7
AO		 4422 bfd_vma roff;
4423
67a4f2b7 4424 roff = rel->r_offset;
67a4f2b7
AO		 4425
4426 /* Now modify the instruction as appropriate. */
4427 if (tls_type != GOT_TLS_IE_NEG)
4428 {
10efb593
L		 4429 /* xchg %ax,%ax */
4430 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4431 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4432 }
4433 else
4434 {
4435 /* negl %eax */
4436 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4437 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4438 }
4439
4440 continue;
4441 }
4442 else
4443 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4444 break;
4445
4446 case R_386_TLS_LDM:
142411ca
L		 4447 if (! elf_i386_tls_transition (info, input_bfd,
4448 input_section, contents,
4449 symtab_hdr, sym_hashes,
4450 &r_type, GOT_UNKNOWN, rel,
4c544807 4451 relend, h, r_symndx))
142411ca 4452 return FALSE;
13ae64f3 4453
142411ca
L		 4454 if (r_type != R_386_TLS_LDM)
4455 {
13ae64f3 4456 /* LD->LE transition:
13ae64f3
JJ		 4457 leal foo(%reg), %eax; call ___tls_get_addr.
4458 We change it into:
4459 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4460 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4461 memcpy (contents + rel->r_offset - 2,
4462 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4463 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4464 rel++;
4465 continue;
4466 }
4467
6de2ae4a 4468 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4469 abort ();
4470
4471 off = htab->tls_ldm_got.offset;
4472 if (off & 1)
4473 off &= ~1;
4474 else
4475 {
947216bf 4476 Elf_Internal_Rela outrel;
13ae64f3 4477
6de2ae4a 4478 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4479 abort ();
4480
6de2ae4a
L		 4481 outrel.r_offset = (htab->elf.sgot->output_section->vma
4482 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4483
4484 bfd_put_32 (output_bfd, 0,
6de2ae4a 4485 htab->elf.sgot->contents + off);
13ae64f3 4486 bfd_put_32 (output_bfd, 0,
6de2ae4a 4487 htab->elf.sgot->contents + off + 4);
13ae64f3 4488 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4489 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4490 htab->tls_ldm_got.offset |= 1;
4491 }
6de2ae4a
L		 4492 relocation = htab->elf.sgot->output_section->vma
4493 + htab->elf.sgot->output_offset + off
4494 - htab->elf.sgotplt->output_section->vma
4495 - htab->elf.sgotplt->output_offset;
b34976b6 4496 unresolved_reloc = FALSE;
13ae64f3
JJ		 4497 break;
4498
4499 case R_386_TLS_LDO_32:
959b0961 4500 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4501 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4502 else
4503 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4504 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4505 break;
4506
4507 case R_386_TLS_LE_32:
13ae64f3 4508 case R_386_TLS_LE:
1d85728f 4509 if (!info->executable)
37e55690 4510 {
947216bf 4511 Elf_Internal_Rela outrel;
37e55690 4512 asection *sreloc;
37e55690
JJ		 4513
4514 outrel.r_offset = rel->r_offset
4515 + input_section->output_section->vma
4516 + input_section->output_offset;
4517 if (h != NULL && h->dynindx != -1)
4518 indx = h->dynindx;
4519 else
4520 indx = 0;
4521 if (r_type == R_386_TLS_LE_32)
4522 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4523 else
4524 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4525 sreloc = elf_section_data (input_section)->sreloc;
4526 if (sreloc == NULL)
4527 abort ();
59d6ffb2 4528 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4529 if (indx)
4530 continue;
4531 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4532 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4533 else
eb4ff4d6 4534 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4535 }
4536 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4537 relocation = elf_i386_tpoff (info, relocation);
37e55690 4538 else
eb4ff4d6 4539 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4540 break;
4541
252b5132
RH		 4542 default:
4543 break;
4544 }
4545
239e1f3a
AM		 4546 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4547 because such sections are not SEC_ALLOC and thus ld.so will
4548 not process them. */
8c694914 4549 if (unresolved_reloc
239e1f3a 4550 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4551 && h->def_dynamic)
4552 && _bfd_elf_section_offset (output_bfd, info, input_section,
4553 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4554 {
4555 (*_bfd_error_handler)
843fe662 4556 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4557 input_bfd,
4558 input_section,
6a30718d 4559 (long) rel->r_offset,
843fe662 4560 howto->name,
6a30718d 4561 h->root.root.string);
b34976b6 4562 return FALSE;
6a30718d 4563 }
83be169b 4564
cbe950e9 4565do_relocation:
252b5132
RH		 4566 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4567 contents, rel->r_offset,
55fd94b0 4568 relocation, 0);
252b5132 4569
62d78908 4570check_relocation_error:
cf5c0c5b 4571 if (r != bfd_reloc_ok)
252b5132 4572 {
cf5c0c5b 4573 const char *name;
ffb2e45b 4574
cf5c0c5b
AM		 4575 if (h != NULL)
4576 name = h->root.root.string;
4577 else
4578 {
4579 name = bfd_elf_string_from_elf_section (input_bfd,
4580 symtab_hdr->sh_link,
4581 sym->st_name);
4582 if (name == NULL)
b34976b6 4583 return FALSE;
cf5c0c5b
AM		 4584 if (*name == '\0')
4585 name = bfd_section_name (input_bfd, sec);
4586 }
ffb2e45b 4587
cf5c0c5b
AM		 4588 if (r == bfd_reloc_overflow)
4589 {
cf5c0c5b 4590 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4591 (info, (h ? &h->root : NULL), name, howto->name,
4592 (bfd_vma) 0, input_bfd, input_section,
4593 rel->r_offset)))
b34976b6 4594 return FALSE;
cf5c0c5b
AM		 4595 }
4596 else
4597 {
4598 (*_bfd_error_handler)
d003868e
AM		 4599 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4600 input_bfd, input_section,
cf5c0c5b 4601 (long) rel->r_offset, name, (int) r);
b34976b6 4602 return FALSE;
cf5c0c5b 4603 }
252b5132
RH		 4604 }
4605 }
4606
b34976b6 4607 return TRUE;
252b5132
RH		 4608}
4609
4610/* Finish up dynamic symbol handling. We set the contents of various
4611 dynamic sections here. */
4612
b34976b6 4613static bfd_boolean
55fd94b0
AM		 4614elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4615 struct bfd_link_info *info,
4616 struct elf_link_hash_entry *h,
4617 Elf_Internal_Sym *sym)
252b5132 4618{
6725bdbf 4619 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4620 unsigned plt_entry_size;
4621 const struct elf_i386_backend_data *abed;
dd7e64d4 4622 struct elf_i386_link_hash_entry *eh;
252b5132 4623
6725bdbf 4624 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4625 if (htab == NULL)
4626 return FALSE;
252b5132 4627
25e762b9
RM		 4628 abed = get_elf_i386_backend_data (output_bfd);
4629 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4630
dd7e64d4
L		 4631 eh = (struct elf_i386_link_hash_entry *) h;
4632
252b5132
RH		 4633 if (h->plt.offset != (bfd_vma) -1)
4634 {
252b5132
RH		 4635 bfd_vma plt_index;
4636 bfd_vma got_offset;
947216bf
AM		 4637 Elf_Internal_Rela rel;
4638 bfd_byte *loc;
cbe950e9
L		 4639 asection *plt, *gotplt, *relplt;
4640
4641 /* When building a static executable, use .iplt, .igot.plt and
4642 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4643 if (htab->elf.splt != NULL)
cbe950e9 4644 {
6de2ae4a
L		 4645 plt = htab->elf.splt;
4646 gotplt = htab->elf.sgotplt;
4647 relplt = htab->elf.srelplt;
cbe950e9
L		 4648 }
4649 else
4650 {
6de2ae4a
L		 4651 plt = htab->elf.iplt;
4652 gotplt = htab->elf.igotplt;
4653 relplt = htab->elf.irelplt;
cbe950e9 4654 }
252b5132
RH		 4655
4656 /* This symbol has an entry in the procedure linkage table. Set
4657 it up. */
4658
cbe950e9
L		 4659 if ((h->dynindx == -1
4660 && !((h->forced_local || info->executable)
4661 && h->def_regular
4662 && h->type == STT_GNU_IFUNC))
4663 || plt == NULL
4664 || gotplt == NULL
4665 || relplt == NULL)
cec7f46a 4666 abort ();
252b5132
RH		 4667
4668 /* Get the index in the procedure linkage table which
4669 corresponds to this symbol. This is the index of this symbol
4670 in all the symbols for which we are making plt entries. The
cbe950e9 4671 first entry in the procedure linkage table is reserved.
252b5132 4672
cbe950e9 4673 Get the offset into the .got table of the entry that
252b5132 4674 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4675 The first three are reserved.
6bbec505 4676
cbe950e9
L		 4677 For static executables, we don't reserve anything. */
4678
6de2ae4a 4679 if (plt == htab->elf.splt)
cbe950e9 4680 {
e1f98742
L		 4681 got_offset = h->plt.offset / plt_entry_size - 1;
4682 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4683 }
4684 else
4685 {
e1f98742
L		 4686 got_offset = h->plt.offset / plt_entry_size;
4687 got_offset = got_offset * 4;
cbe950e9 4688 }
252b5132
RH		 4689
4690 /* Fill in the entry in the procedure linkage table. */
4691 if (! info->shared)
4692 {
25e762b9
RM		 4693 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4694 abed->plt->plt_entry_size);
252b5132 4695 bfd_put_32 (output_bfd,
cbe950e9
L		 4696 (gotplt->output_section->vma
4697 + gotplt->output_offset
252b5132 4698 + got_offset),
25e762b9
RM		 4699 plt->contents + h->plt.offset
4700 + abed->plt->plt_got_offset);
eac338cf 4701
25e762b9 4702 if (abed->is_vxworks)
eac338cf
PB		 4703 {
4704 int s, k, reloc_index;
4705
4706 /* Create the R_386_32 relocation referencing the GOT
4707 for this PLT entry. */
4708
4709 /* S: Current slot number (zero-based). */
25e762b9
RM		 4710 s = ((h->plt.offset - abed->plt->plt_entry_size)
4711 / abed->plt->plt_entry_size);
eac338cf
PB		 4712 /* K: Number of relocations for PLTResolve. */
4713 if (info->shared)
4714 k = PLTRESOLVE_RELOCS_SHLIB;
4715 else
4716 k = PLTRESOLVE_RELOCS;
4717 /* Skip the PLTresolve relocations, and the relocations for
4718 the other PLT slots. */
4719 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4720 loc = (htab->srelplt2->contents + reloc_index
4721 * sizeof (Elf32_External_Rel));
4722
6de2ae4a
L		 4723 rel.r_offset = (htab->elf.splt->output_section->vma
4724 + htab->elf.splt->output_offset
eac338cf 4725 + h->plt.offset + 2),
7325306f 4726 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4727 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4728
4729 /* Create the R_386_32 relocation referencing the beginning of
4730 the PLT for this GOT entry. */
6de2ae4a
L		 4731 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4732 + htab->elf.sgotplt->output_offset
eac338cf 4733 + got_offset);
7325306f 4734 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4735 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4736 loc + sizeof (Elf32_External_Rel));
eac338cf 4737 }
252b5132
RH		 4738 }
4739 else
4740 {
25e762b9
RM		 4741 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4742 abed->plt->plt_entry_size);
252b5132 4743 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4744 plt->contents + h->plt.offset
4745 + abed->plt->plt_got_offset);
252b5132
RH		 4746 }
4747
252b5132
RH		 4748 /* Fill in the entry in the global offset table. */
4749 bfd_put_32 (output_bfd,
cbe950e9
L		 4750 (plt->output_section->vma
4751 + plt->output_offset
252b5132 4752 + h->plt.offset
25e762b9 4753 + abed->plt->plt_lazy_offset),
cbe950e9 4754 gotplt->contents + got_offset);
252b5132
RH		 4755
4756 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4757 rel.r_offset = (gotplt->output_section->vma
4758 + gotplt->output_offset
252b5132 4759 + got_offset);
cbe950e9
L		 4760 if (h->dynindx == -1
4761 || ((info->executable
4762 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4763 && h->def_regular
4764 && h->type == STT_GNU_IFUNC))
4765 {
4766 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4767 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4768 in the .got.plt section. */
4769 bfd_put_32 (output_bfd,
23209a78 4770 (h->root.u.def.value
cbe950e9
L		 4771 + h->root.u.def.section->output_section->vma
4772 + h->root.u.def.section->output_offset),
4773 gotplt->contents + got_offset);
4774 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4775 /* R_386_IRELATIVE comes last. */
4776 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4777 }
4778 else
e1f98742
L		 4779 {
4780 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4781 plt_index = htab->next_jump_slot_index++;
4782 }
cbe950e9 4783 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4784 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4785
e1f98742
L		 4786 /* Don't fill PLT entry for static executables. */
4787 if (plt == htab->elf.splt)
4788 {
4789 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4790 plt->contents + h->plt.offset
4791 + abed->plt->plt_reloc_offset);
4792 bfd_put_32 (output_bfd, - (h->plt.offset
4793 + abed->plt->plt_plt_offset + 4),
4794 plt->contents + h->plt.offset
4795 + abed->plt->plt_plt_offset);
4796 }
dd7e64d4
L		 4797 }
4798 else if (eh->plt_got.offset != (bfd_vma) -1)
4799 {
4800 bfd_vma got_offset, plt_offset;
4801 asection *plt, *got, *gotplt;
4802 const bfd_byte *got_plt_entry;
4803
4804 /* Offset of displacement of the indirect jump. */
4805 bfd_vma plt_got_offset = 2;
e1f98742 4806
dd7e64d4
L		 4807 /* Set the entry in the GOT procedure linkage table. */
4808 plt = htab->plt_got;
4809 got = htab->elf.sgot;
4810 gotplt = htab->elf.sgotplt;
4811 got_offset = h->got.offset;
4812
4813 if (got_offset == (bfd_vma) -1
4814 || plt == NULL
4815 || got == NULL
4816 || gotplt == NULL)
4817 abort ();
4818
4819 /* Fill in the entry in the GOT procedure linkage table. */
4820 if (! info->shared)
252b5132 4821 {
dd7e64d4
L		 4822 got_plt_entry = elf_i386_got_plt_entry;
4823 got_offset += got->output_section->vma + got->output_offset;
252b5132 4824 }
dd7e64d4
L		 4825 else
4826 {
4827 got_plt_entry = elf_i386_pic_got_plt_entry;
4828 got_offset += (got->output_section->vma
4829 + got->output_offset
4830 - gotplt->output_section->vma
4831 - gotplt->output_offset);
4832 }
4833
4834 plt_offset = eh->plt_got.offset;
4835 memcpy (plt->contents + plt_offset, got_plt_entry,
4836 sizeof (elf_i386_got_plt_entry));
4837 bfd_put_32 (output_bfd, got_offset,
4838 plt->contents + plt_offset + plt_got_offset);
4839 }
4840
4841 if (!h->def_regular
4842 && (h->plt.offset != (bfd_vma) -1
4843 || eh->plt_got.offset != (bfd_vma) -1))
4844 {
4845 /* Mark the symbol as undefined, rather than as defined in
4846 the .plt section. Leave the value if there were any
4847 relocations where pointer equality matters (this is a clue
4848 for the dynamic linker, to make function pointer
4849 comparisons work between an application and shared
4850 library), otherwise set it to zero. If a function is only
4851 called from a binary, there is no need to slow down
4852 shared libraries because of that. */
4853 sym->st_shndx = SHN_UNDEF;
4854 if (!h->pointer_equality_needed)
4855 sym->st_value = 0;
252b5132
RH		 4856 }
4857
13ae64f3 4858 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4859 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4860 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4861 {
947216bf 4862 Elf_Internal_Rela rel;
252b5132
RH		 4863
4864 /* This symbol has an entry in the global offset table. Set it
4865 up. */
4866
6de2ae4a 4867 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4868 abort ();
252b5132 4869
6de2ae4a
L		 4870 rel.r_offset = (htab->elf.sgot->output_section->vma
4871 + htab->elf.sgot->output_offset
dc810e39 4872 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4873
dd5724d5
AM		 4874 /* If this is a static link, or it is a -Bsymbolic link and the
4875 symbol is defined locally or was forced to be local because
4876 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4877 The entry in the global offset table will already have been
4878 initialized in the relocate_section function. */
710ab287 4879 if (h->def_regular
0018b0a3
L		 4880 && h->type == STT_GNU_IFUNC)
4881 {
710ab287
L		 4882 if (info->shared)
4883 {
4884 /* Generate R_386_GLOB_DAT. */
4885 goto do_glob_dat;
4886 }
4887 else
4888 {
cd2b2c10
L		 4889 asection *plt;
4890
710ab287
L		 4891 if (!h->pointer_equality_needed)
4892 abort ();
4893
4894 /* For non-shared object, we can't use .got.plt, which
4895 contains the real function addres if we need pointer
4896 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4897 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4898 bfd_put_32 (output_bfd,
4899 (plt->output_section->vma
4900 + plt->output_offset + h->plt.offset),
6de2ae4a 4901 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4902 return TRUE;
4903 }
0018b0a3
L		 4904 }
4905 else if (info->shared
4906 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4907 {
6725bdbf 4908 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4909 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4910 }
252b5132
RH		 4911 else
4912 {
dd5724d5 4913 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4914do_glob_dat:
6725bdbf 4915 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4916 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4917 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4918 }
4919
59d6ffb2 4920 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 4921 }
4922
f5385ebf 4923 if (h->needs_copy)
252b5132 4924 {
947216bf 4925 Elf_Internal_Rela rel;
252b5132
RH		 4926
4927 /* This symbol needs a copy reloc. Set it up. */
4928
ffb2e45b
AM		 4929 if (h->dynindx == -1
4930 || (h->root.type != bfd_link_hash_defined
4931 && h->root.type != bfd_link_hash_defweak)
4932 || htab->srelbss == NULL)
4933 abort ();
252b5132
RH		 4934
4935 rel.r_offset = (h->root.u.def.value
4936 + h->root.u.def.section->output_section->vma
4937 + h->root.u.def.section->output_offset);
4938 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 4939 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 4940 }
4941
b34976b6 4942 return TRUE;
252b5132
RH		 4943}
4944
c25bc9fc
L		 4945/* Finish up local dynamic symbol handling. We set the contents of
4946 various dynamic sections here. */
4947
4948static bfd_boolean
4949elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4950{
4951 struct elf_link_hash_entry *h
4952 = (struct elf_link_hash_entry *) *slot;
4953 struct bfd_link_info *info
23209a78 4954 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4955
4956 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4957 h, NULL);
4958}
4959
38701953
AM		 4960/* Used to decide how to sort relocs in an optimal manner for the
4961 dynamic linker, before writing them out. */
4962
4963static enum elf_reloc_type_class
7e612e98
AM		 4964elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4965 const asection *rel_sec ATTRIBUTE_UNUSED,
4966 const Elf_Internal_Rela *rela)
38701953 4967{
55fd94b0 4968 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4969 {
4970 case R_386_RELATIVE:
4971 return reloc_class_relative;
4972 case R_386_JUMP_SLOT:
4973 return reloc_class_plt;
4974 case R_386_COPY:
4975 return reloc_class_copy;
4976 default:
4977 return reloc_class_normal;
4978 }
4979}
4980
252b5132
RH		 4981/* Finish up the dynamic sections. */
4982
b34976b6 4983static bfd_boolean
55fd94b0
AM		 4984elf_i386_finish_dynamic_sections (bfd *output_bfd,
4985 struct bfd_link_info *info)
252b5132 4986{
6725bdbf 4987 struct elf_i386_link_hash_table *htab;
252b5132 4988 bfd *dynobj;
252b5132 4989 asection *sdyn;
25e762b9 4990 const struct elf_i386_backend_data *abed;
252b5132 4991
6725bdbf 4992 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4993 if (htab == NULL)
4994 return FALSE;
4995
ebe50bae 4996 dynobj = htab->elf.dynobj;
3d4d4302 4997 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4998 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4999
ebe50bae 5000 if (htab->elf.dynamic_sections_created)
252b5132 5001 {
252b5132
RH		 5002 Elf32_External_Dyn *dyncon, *dynconend;
5003
6de2ae4a 5004 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 5005 abort ();
252b5132
RH		 5006
5007 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 5008 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 5009 for (; dyncon < dynconend; dyncon++)
5010 {
5011 Elf_Internal_Dyn dyn;
51b64d56 5012 asection *s;
252b5132
RH		 5013
5014 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5015
5016 switch (dyn.d_tag)
5017 {
5018 default:
25e762b9
RM		 5019 if (abed->is_vxworks
5020 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 5021 break;
0ac8d2ca 5022 continue;
252b5132
RH		 5023
5024 case DT_PLTGOT:
6de2ae4a 5025 s = htab->elf.sgotplt;
8c37241b 5026 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 5027 break;
5028
252b5132 5029 case DT_JMPREL:
6de2ae4a 5030 s = htab->elf.srelplt;
6348e046 5031 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 5032 break;
5033
5034 case DT_PLTRELSZ:
6de2ae4a 5035 s = htab->elf.srelplt;
eea6121a 5036 dyn.d_un.d_val = s->size;
252b5132
RH		 5037 break;
5038
5039 case DT_RELSZ:
5040 /* My reading of the SVR4 ABI indicates that the
5041 procedure linkage table relocs (DT_JMPREL) should be
5042 included in the overall relocs (DT_REL). This is
5043 what Solaris does. However, UnixWare can not handle
5044 that case. Therefore, we override the DT_RELSZ entry
6348e046 5045 here to make it not include the JMPREL relocs. */
6de2ae4a 5046 s = htab->elf.srelplt;
6348e046
AM		 5047 if (s == NULL)
5048 continue;
eea6121a 5049 dyn.d_un.d_val -= s->size;
6348e046
AM		 5050 break;
5051
5052 case DT_REL:
5053 /* We may not be using the standard ELF linker script.
5054 If .rel.plt is the first .rel section, we adjust
5055 DT_REL to not include it. */
6de2ae4a 5056 s = htab->elf.srelplt;
6348e046
AM		 5057 if (s == NULL)
5058 continue;
5059 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
5060 continue;
eea6121a 5061 dyn.d_un.d_ptr += s->size;
252b5132
RH		 5062 break;
5063 }
0ac8d2ca
AM		 5064
5065 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 5066 }
5067
5068 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 5069 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 5070 {
5071 if (info->shared)
eac338cf 5072 {
25e762b9
RM		 5073 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
5074 abed->plt->plt0_entry_size);
5075 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5076 abed->plt0_pad_byte,
5077 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 5078 }
252b5132
RH		 5079 else
5080 {
25e762b9
RM		 5081 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
5082 abed->plt->plt0_entry_size);
5083 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5084 abed->plt0_pad_byte,
5085 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 5086 bfd_put_32 (output_bfd,
6de2ae4a
L		 5087 (htab->elf.sgotplt->output_section->vma
5088 + htab->elf.sgotplt->output_offset
6725bdbf 5089 + 4),
25e762b9
RM		 5090 htab->elf.splt->contents
5091 + abed->plt->plt0_got1_offset);
252b5132 5092 bfd_put_32 (output_bfd,
6de2ae4a
L		 5093 (htab->elf.sgotplt->output_section->vma
5094 + htab->elf.sgotplt->output_offset
6725bdbf 5095 + 8),
25e762b9
RM		 5096 htab->elf.splt->contents
5097 + abed->plt->plt0_got2_offset);
eac338cf 5098
25e762b9 5099 if (abed->is_vxworks)
eac338cf
PB		 5100 {
5101 Elf_Internal_Rela rel;
7325306f 5102
eac338cf
PB		 5103 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
5104 On IA32 we use REL relocations so the addend goes in
5105 the PLT directly. */
6de2ae4a
L		 5106 rel.r_offset = (htab->elf.splt->output_section->vma
5107 + htab->elf.splt->output_offset
25e762b9 5108 + abed->plt->plt0_got1_offset);
7325306f 5109 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5110 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5111 htab->srelplt2->contents);
5112 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 5113 rel.r_offset = (htab->elf.splt->output_section->vma
5114 + htab->elf.splt->output_offset
25e762b9 5115 + abed->plt->plt0_got2_offset);
7325306f 5116 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5117 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5118 htab->srelplt2->contents +
5119 sizeof (Elf32_External_Rel));
5120 }
252b5132
RH		 5121 }
5122
5123 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5124 really seem like the right value. */
6de2ae4a 5125 elf_section_data (htab->elf.splt->output_section)
6725bdbf 5126 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 5127
5128 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 5129 if (abed->is_vxworks && !info->shared)
eac338cf 5130 {
25e762b9
RM		 5131 int num_plts = (htab->elf.splt->size
5132 / abed->plt->plt_entry_size) - 1;
4c9b0de6 5133 unsigned char *p;
eac338cf
PB		 5134
5135 p = htab->srelplt2->contents;
5136 if (info->shared)
5137 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5138 else
5139 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5140
5141 for (; num_plts; num_plts--)
5142 {
5143 Elf_Internal_Rela rel;
5144 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5145 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5146 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5147 p += sizeof (Elf32_External_Rel);
5148
5149 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5150 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 5151 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5152 p += sizeof (Elf32_External_Rel);
5153 }
5154 }
252b5132
RH		 5155 }
5156 }
5157
6de2ae4a 5158 if (htab->elf.sgotplt)
252b5132 5159 {
56d4289c
L		 5160 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5161 {
5162 (*_bfd_error_handler)
5163 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5164 return FALSE;
5165 }
5166
12d0ee4a 5167 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5168 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 5169 {
5170 bfd_put_32 (output_bfd,
55fd94b0 5171 (sdyn == NULL ? 0
12d0ee4a 5172 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 5173 htab->elf.sgotplt->contents);
5174 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5175 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 5176 }
252b5132 5177
6de2ae4a 5178 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5179 }
8c37241b 5180
e41b3a13 5181 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5182 if (htab->plt_eh_frame != NULL
5183 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5184 {
5185 if (htab->elf.splt != NULL
5186 && htab->elf.splt->size != 0
5187 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5188 && htab->elf.splt->output_section != NULL
5189 && htab->plt_eh_frame->output_section != NULL)
5190 {
5191 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5192 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5193 + htab->plt_eh_frame->output_offset
5194 + PLT_FDE_START_OFFSET;
5195 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5196 htab->plt_eh_frame->contents
5197 + PLT_FDE_START_OFFSET);
5198 }
5199 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5200 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5201 {
5202 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5203 htab->plt_eh_frame,
5204 htab->plt_eh_frame->contents))
5205 return FALSE;
5206 }
5207 }
5208
6de2ae4a
L		 5209 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5210 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5211
c25bc9fc
L		 5212 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5213 htab_traverse (htab->loc_hash_table,
5214 elf_i386_finish_local_dynamic_symbol,
5215 info);
5216
b34976b6 5217 return TRUE;
252b5132
RH		 5218}
5219
3972882e 5220/* Return an array of PLT entry symbol values. */
4c45e5c9 5221
3972882e
L		 5222static bfd_vma *
5223elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5224 asection *relplt)
4c45e5c9 5225{
3972882e
L		 5226 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5227 arelent *p;
5228 long count, i;
5229 bfd_vma *plt_sym_val;
144bed8d 5230 bfd_vma plt_offset;
3972882e
L		 5231 bfd_byte *plt_contents;
5232 const struct elf_i386_backend_data *bed
5233 = get_elf_i386_backend_data (abfd);
5234 Elf_Internal_Shdr *hdr;
5235
5236 /* Get the .plt section contents. */
5237 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5238 if (plt_contents == NULL)
5239 return NULL;
5240 if (!bfd_get_section_contents (abfd, (asection *) plt,
5241 plt_contents, 0, plt->size))
5242 {
5243bad_return:
5244 free (plt_contents);
5245 return NULL;
5246 }
144bed8d 5247
3972882e
L		 5248 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5249 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5250 goto bad_return;
144bed8d 5251
3972882e
L		 5252 hdr = &elf_section_data (relplt)->this_hdr;
5253 count = relplt->size / hdr->sh_entsize;
5254
5255 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5256 if (plt_sym_val == NULL)
5257 goto bad_return;
cca5b8b6 5258
35181b3e 5259 for (i = 0; i < count; i++)
3972882e 5260 plt_sym_val[i] = -1;
cca5b8b6 5261
3972882e
L		 5262 plt_offset = bed->plt->plt_entry_size;
5263 p = relplt->relocation;
5264 for (i = 0; i < count; i++, p++)
144bed8d 5265 {
3972882e
L		 5266 long reloc_index;
5267
6f25f223 5268 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
533d0af0 5269 if (p->howto == NULL)
6f25f223 5270 continue;
533d0af0
L		 5271
5272 if (p->howto->type != R_386_JUMP_SLOT
5273 && p->howto->type != R_386_IRELATIVE)
3972882e
L		 5274 continue;
5275
5276 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
5277 + bed->plt->plt_reloc_offset));
5278 reloc_index /= sizeof (Elf32_External_Rel);
5279 if (reloc_index >= count)
5280 abort ();
5281 plt_sym_val[reloc_index] = plt->vma + plt_offset;
144bed8d 5282 plt_offset += bed->plt->plt_entry_size;
fca6ae69
L		 5283
5284 /* PR binutils/18437: Skip extra relocations in the .rel.plt
5285 section. */
5286 if (plt_offset >= plt->size)
5287 break;
144bed8d
L		 5288 }
5289
3972882e
L		 5290 free (plt_contents);
5291
5292 return plt_sym_val;
5293}
5294
5295/* Similar to _bfd_elf_get_synthetic_symtab. */
5296
5297static long
5298elf_i386_get_synthetic_symtab (bfd *abfd,
5299 long symcount,
5300 asymbol **syms,
5301 long dynsymcount,
5302 asymbol **dynsyms,
5303 asymbol **ret)
5304{
5305 asection *plt = bfd_get_section_by_name (abfd, ".plt");
5306 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
5307 dynsymcount, dynsyms, ret,
5308 plt,
5309 elf_i386_get_plt_sym_val);
4c45e5c9
JJ		 5310}
5311
fdc90cb4
JJ		 5312/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5313
5314static bfd_boolean
5315elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5316{
5317 if (h->plt.offset != (bfd_vma) -1
5318 && !h->def_regular
5319 && !h->pointer_equality_needed)
5320 return FALSE;
5321
5322 return _bfd_elf_hash_symbol (h);
5323}
4c45e5c9 5324
d8045f23
NC		 5325/* Hook called by the linker routine which adds symbols from an object
5326 file. */
5327
5328static bfd_boolean
c16153ae 5329elf_i386_add_symbol_hook (bfd * abfd,
f1885d1e 5330 struct bfd_link_info * info,
d8045f23
NC		 5331 Elf_Internal_Sym * sym,
5332 const char ** namep ATTRIBUTE_UNUSED,
5333 flagword * flagsp ATTRIBUTE_UNUSED,
5334 asection ** secp ATTRIBUTE_UNUSED,
5335 bfd_vma * valp ATTRIBUTE_UNUSED)
5336{
13a2df29 5337 if (ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE
f1885d1e
AM		 5338 && (abfd->flags & DYNAMIC) == 0
5339 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
13a2df29
L		 5340 elf_tdata (info->output_bfd)->has_gnu_symbols
5341 |= elf_gnu_symbol_unique;
d8045f23
NC		 5342
5343 return TRUE;
5344}
5345
6d00b590 5346#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 5347#define TARGET_LITTLE_NAME "elf32-i386"
5348#define ELF_ARCH bfd_arch_i386
ae95ffa6 5349#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5350#define ELF_MACHINE_CODE EM_386
5351#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5352
5353#define elf_backend_can_gc_sections 1
51b64d56 5354#define elf_backend_can_refcount 1
252b5132
RH		 5355#define elf_backend_want_got_plt 1
5356#define elf_backend_plt_readonly 1
5357#define elf_backend_want_plt_sym 0
5358#define elf_backend_got_header_size 12
e41b3a13 5359#define elf_backend_plt_alignment 4
f7483970 5360#define elf_backend_extern_protected_data 1
252b5132 5361
8c29f035
AM		 5362/* Support RELA for objdump of prelink objects. */
5363#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5364#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5365
13ae64f3 5366#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5367
dd5724d5
AM		 5368#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5369#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
5370#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5371#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 5372#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5
AM		 5373
5374#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5375#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5376#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5377#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5378#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5379#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5380#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5381#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5382#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5383#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5384#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5385#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5386#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5387#define elf_backend_relocate_section elf_i386_relocate_section
5388#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5389#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5390#define elf_backend_omit_section_dynsym \
5391 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
fdc90cb4 5392#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23 5393#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
dd5724d5 5394
252b5132 5395#include "elf32-target.h"
2bc3c89a
AM		 5396
5397/* FreeBSD support. */
5398
5399#undef TARGET_LITTLE_SYM
6d00b590 5400#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 5401#undef TARGET_LITTLE_NAME
5402#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5403#undef ELF_OSABI
5404#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5405
5406/* The kernel recognizes executables as valid only if they carry a
5407 "FreeBSD" label in the ELF header. So we put this label on all
5408 executables and (for simplicity) also all other object files. */
5409
2bc3c89a 5410static void
d8045f23 5411elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5412{
78245035 5413 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 5414
2bc3c89a 5415#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 5416 {
5417 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5418 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
5419 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
5420 }
caf47ea6 5421#endif
2bc3c89a
AM		 5422}
5423
5424#undef elf_backend_post_process_headers
d8045f23 5425#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5426#undef elf32_bed
5427#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5428
d8045f23
NC		 5429#undef elf_backend_add_symbol_hook
5430
2bc3c89a 5431#include "elf32-target.h"
eac338cf 5432
a6cc6b3b
RO		 5433/* Solaris 2. */
5434
5435#undef TARGET_LITTLE_SYM
6d00b590 5436#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 5437#undef TARGET_LITTLE_NAME
5438#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5439
914082d1
L		 5440#undef elf_backend_post_process_headers
5441
a6cc6b3b
RO		 5442/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5443 objects won't be recognized. */
5444#undef ELF_OSABI
5445
5446#undef elf32_bed
5447#define elf32_bed elf32_i386_sol2_bed
5448
7dc98aea
RO		 5449/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5450 boundary. */
5451#undef elf_backend_static_tls_alignment
5452#define elf_backend_static_tls_alignment 8
5453
a6cc6b3b
RO		 5454/* The Solaris 2 ABI requires a plt symbol on all platforms.
5455
5456 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5457 File, p.63. */
5458#undef elf_backend_want_plt_sym
5459#define elf_backend_want_plt_sym 1
5460
5461#include "elf32-target.h"
5462
bf64a951
L		 5463/* Intel MCU support. */
5464
5465static bfd_boolean
5466elf32_iamcu_elf_object_p (bfd *abfd)
5467{
5468 /* Set the right machine number for an IAMCU elf32 file. */
5469 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
5470 return TRUE;
5471}
5472
5473#undef TARGET_LITTLE_SYM
5474#define TARGET_LITTLE_SYM iamcu_elf32_vec
5475#undef TARGET_LITTLE_NAME
5476#define TARGET_LITTLE_NAME "elf32-iamcu"
5477#undef ELF_ARCH
5478#define ELF_ARCH bfd_arch_iamcu
5479
5480#undef ELF_MACHINE_CODE
5481#define ELF_MACHINE_CODE EM_IAMCU
5482
5483#undef ELF_OSABI
5484
5485#undef elf32_bed
5486#define elf32_bed elf32_iamcu_bed
5487
5488#undef elf_backend_object_p
5489#define elf_backend_object_p elf32_iamcu_elf_object_p
5490
5491#undef elf_backend_static_tls_alignment
5492
5493#undef elf_backend_want_plt_sym
5494#define elf_backend_want_plt_sym 0
5495
5496#include "elf32-target.h"
5497
5498/* Restore defaults. */
5499#undef ELF_ARCH
5500#define ELF_ARCH bfd_arch_i386
5501#undef ELF_MACHINE_CODE
5502#define ELF_MACHINE_CODE EM_386
5503
a27e4371
RM		 5504/* Native Client support. */
5505
5506#undef TARGET_LITTLE_SYM
6d00b590 5507#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 5508#undef TARGET_LITTLE_NAME
5509#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5510#undef elf32_bed
5511#define elf32_bed elf32_i386_nacl_bed
5512
5513#undef ELF_MAXPAGESIZE
5514#define ELF_MAXPAGESIZE 0x10000
5515
5516/* Restore defaults. */
5517#undef ELF_OSABI
5518#undef elf_backend_want_plt_sym
5519#define elf_backend_want_plt_sym 0
5520#undef elf_backend_post_process_headers
a27e4371
RM		 5521#undef elf_backend_static_tls_alignment
5522
5523/* NaCl uses substantially different PLT entries for the same effects. */
5524
5525#undef elf_backend_plt_alignment
5526#define elf_backend_plt_alignment 5
5527#define NACL_PLT_ENTRY_SIZE 64
5528#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5529
5530static const bfd_byte elf_i386_nacl_plt0_entry[] =
5531 {
5532 0xff, 0x35, /* pushl contents of address */
5533 0, 0, 0, 0, /* replaced with address of .got + 4. */
5534 0x8b, 0x0d, /* movl contents of address, %ecx */
5535 0, 0, 0, 0, /* replaced with address of .got + 8. */
5536 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5537 0xff, 0xe1 /* jmp *%ecx */
5538 };
5539
5540static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5541 {
5542 0x8b, 0x0d, /* movl contents of address, %ecx */
5543 0, 0, 0, 0, /* replaced with GOT slot address. */
5544 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5545 0xff, 0xe1, /* jmp *%ecx */
5546
5547 /* Pad to the next 32-byte boundary with nop instructions. */
5548 0x90,
5549 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5550 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5551
5552 /* Lazy GOT entries point here (32-byte aligned). */
5553 0x68, /* pushl immediate */
5554 0, 0, 0, 0, /* replaced with reloc offset. */
5555 0xe9, /* jmp relative */
5556 0, 0, 0, 0, /* replaced with offset to .plt. */
5557
5558 /* Pad to the next 32-byte boundary with nop instructions. */
5559 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5560 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5561 0x90, 0x90
5562 };
5563
5564static const bfd_byte
5565elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5566 {
5567 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5568 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5569 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5570 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5571
5572 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5573 so pad to that size with nop instructions. */
5574 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5575 };
5576
5577static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5578 {
5579 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5580 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5581 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5582 0xff, 0xe1, /* jmp *%ecx */
5583
5584 /* Pad to the next 32-byte boundary with nop instructions. */
5585 0x90,
5586 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5587 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5588
5589 /* Lazy GOT entries point here (32-byte aligned). */
5590 0x68, /* pushl immediate */
5591 0, 0, 0, 0, /* replaced with offset into relocation table. */
5592 0xe9, /* jmp relative */
5593 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5594
5595 /* Pad to the next 32-byte boundary with nop instructions. */
5596 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5597 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5598 0x90, 0x90
5599 };
5600
5601static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5602 {
5603#if (PLT_CIE_LENGTH != 20 \
5604 || PLT_FDE_LENGTH != 36 \
5605 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5606 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5607# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5608#endif
5609 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5610 0, 0, 0, 0, /* CIE ID */
5611 1, /* CIE version */
5612 'z', 'R', 0, /* Augmentation string */
5613 1, /* Code alignment factor */
5614 0x7c, /* Data alignment factor: -4 */
5615 8, /* Return address column */
5616 1, /* Augmentation size */
5617 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5618 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5619 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5620 DW_CFA_nop, DW_CFA_nop,
5621
5622 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5623 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5624 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5625 0, 0, 0, 0, /* .plt size goes here */
5626 0, /* Augmentation size */
5627 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5628 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5629 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5630 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5631 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5632 13, /* Block length */
5633 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5634 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5635 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5636 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5637 DW_CFA_nop, DW_CFA_nop
5638 };
5639
5640static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5641 {
5642 elf_i386_nacl_plt0_entry, /* plt0_entry */
5643 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5644 2, /* plt0_got1_offset */
5645 8, /* plt0_got2_offset */
5646 elf_i386_nacl_plt_entry, /* plt_entry */
5647 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5648 2, /* plt_got_offset */
5649 33, /* plt_reloc_offset */
5650 38, /* plt_plt_offset */
5651 32, /* plt_lazy_offset */
5652 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5653 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5654 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5655 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5656 };
5657
5658static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5659 {
5660 &elf_i386_nacl_plt, /* plt */
5661 0x90, /* plt0_pad_byte: nop insn */
5662 0, /* is_vxworks */
5663 };
5664
64b384e1
RM		 5665static bfd_boolean
5666elf32_i386_nacl_elf_object_p (bfd *abfd)
5667{
5668 /* Set the right machine number for a NaCl i386 ELF32 file. */
5669 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
5670 return TRUE;
5671}
5672
a27e4371
RM		 5673#undef elf_backend_arch_data
5674#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5675
64b384e1
RM		 5676#undef elf_backend_object_p
5677#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 5678#undef elf_backend_modify_segment_map
5679#define elf_backend_modify_segment_map nacl_modify_segment_map
5680#undef elf_backend_modify_program_headers
5681#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5682#undef elf_backend_final_write_processing
5683#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5684
a27e4371
RM		 5685#include "elf32-target.h"
5686
5a68afcf 5687/* Restore defaults. */
64b384e1 5688#undef elf_backend_object_p
5a68afcf
RM		 5689#undef elf_backend_modify_segment_map
5690#undef elf_backend_modify_program_headers
887badb3 5691#undef elf_backend_final_write_processing
5a68afcf 5692
eac338cf
PB		 5693/* VxWorks support. */
5694
5695#undef TARGET_LITTLE_SYM
6d00b590 5696#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 5697#undef TARGET_LITTLE_NAME
5698#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5699#undef ELF_OSABI
a27e4371
RM		 5700#undef elf_backend_plt_alignment
5701#define elf_backend_plt_alignment 4
eac338cf 5702
23209a78
RM		 5703static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5704 {
25e762b9 5705 &elf_i386_plt, /* plt */
23209a78
RM		 5706 0x90, /* plt0_pad_byte */
5707 1, /* is_vxworks */
5708 };
eac338cf 5709
23209a78
RM		 5710#undef elf_backend_arch_data
5711#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5712
13285a1b 5713#undef elf_backend_relocs_compatible
eac338cf
PB		 5714#undef elf_backend_add_symbol_hook
5715#define elf_backend_add_symbol_hook \
5716 elf_vxworks_add_symbol_hook
5717#undef elf_backend_link_output_symbol_hook
5718#define elf_backend_link_output_symbol_hook \
9c72ff84 5719 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5720#undef elf_backend_emit_relocs
5721#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5722#undef elf_backend_final_write_processing
5723#define elf_backend_final_write_processing \
5724 elf_vxworks_final_write_processing
7dc98aea 5725#undef elf_backend_static_tls_alignment
eac338cf
PB		 5726
5727/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5728 define it. */
5729#undef elf_backend_want_plt_sym
5730#define elf_backend_want_plt_sym 1
5731
5732#undef elf32_bed
5733#define elf32_bed elf32_i386_vxworks_bed
5734
5735#include "elf32-target.h"
GDB Binutils - Deliverables
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