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x86/Linux: disable all-stop on top of non-stop
[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 {
8efa2874
L		 3155 if ((elf_tdata (output_bfd)->has_gnu_symbols
3156 & elf_gnu_symbol_ifunc) == elf_gnu_symbol_ifunc)
3157 {
3158 info->callbacks->einfo
3159 (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
3160 bfd_set_error (bfd_error_bad_value);
3161 return FALSE;
3162 }
3163
0c715baa 3164 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3165 return FALSE;
0c715baa 3166 }
252b5132 3167 }
23209a78 3168 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3169 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3170 return FALSE;
252b5132 3171 }
dc810e39 3172#undef add_dynamic_entry
252b5132 3173
b34976b6 3174 return TRUE;
252b5132
RH		 3175}
3176
67a4f2b7
AO		 3177static bfd_boolean
3178elf_i386_always_size_sections (bfd *output_bfd,
3179 struct bfd_link_info *info)
3180{
3181 asection *tls_sec = elf_hash_table (info)->tls_sec;
3182
3183 if (tls_sec)
3184 {
3185 struct elf_link_hash_entry *tlsbase;
3186
3187 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3188 "_TLS_MODULE_BASE_",
3189 FALSE, FALSE, FALSE);
3190
3191 if (tlsbase && tlsbase->type == STT_TLS)
3192 {
4dfe6ac6 3193 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3194 struct bfd_link_hash_entry *bh = NULL;
3195 const struct elf_backend_data *bed
3196 = get_elf_backend_data (output_bfd);
3197
4dfe6ac6
NC		 3198 htab = elf_i386_hash_table (info);
3199 if (htab == NULL)
3200 return FALSE;
3201
67a4f2b7
AO		 3202 if (!(_bfd_generic_link_add_one_symbol
3203 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3204 tls_sec, 0, NULL, FALSE,
3205 bed->collect, &bh)))
3206 return FALSE;
9f03412a 3207
4dfe6ac6 3208 htab->tls_module_base = bh;
9f03412a 3209
67a4f2b7
AO		 3210 tlsbase = (struct elf_link_hash_entry *)bh;
3211 tlsbase->def_regular = 1;
3212 tlsbase->other = STV_HIDDEN;
576fa883 3213 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3214 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3215 }
3216 }
3217
3218 return TRUE;
3219}
3220
38701953
AM		 3221/* Set the correct type for an x86 ELF section. We do this by the
3222 section name, which is a hack, but ought to work. */
3223
b34976b6 3224static bfd_boolean
55fd94b0
AM		 3225elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3226 Elf_Internal_Shdr *hdr,
3227 asection *sec)
38701953 3228{
91d6fa6a 3229 const char *name;
38701953
AM		 3230
3231 name = bfd_get_section_name (abfd, sec);
3232
3233 /* This is an ugly, but unfortunately necessary hack that is
3234 needed when producing EFI binaries on x86. It tells
3235 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3236 containing ELF relocation info. We need this hack in order to
3237 be able to generate ELF binaries that can be translated into
3238 EFI applications (which are essentially COFF objects). Those
3239 files contain a COFF ".reloc" section inside an ELFNN object,
3240 which would normally cause BFD to segfault because it would
3241 attempt to interpret this section as containing relocation
3242 entries for section "oc". With this hack enabled, ".reloc"
3243 will be treated as a normal data section, which will avoid the
3244 segfault. However, you won't be able to create an ELFNN binary
3245 with a section named "oc" that needs relocations, but that's
3246 the kind of ugly side-effects you get when detecting section
3247 types based on their names... In practice, this limitation is
3248 unlikely to bite. */
3249 if (strcmp (name, ".reloc") == 0)
3250 hdr->sh_type = SHT_PROGBITS;
3251
b34976b6 3252 return TRUE;
38701953
AM		 3253}
3254
9f03412a
AO		 3255/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3256 executables. Rather than setting it to the beginning of the TLS
3257 section, we have to set it to the end. This function may be called
3258 multiple times, it is idempotent. */
3259
3260static void
eb4ff4d6 3261elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3262{
4dfe6ac6 3263 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3264 struct bfd_link_hash_entry *base;
3265
3266 if (!info->executable)
3267 return;
3268
4dfe6ac6
NC		 3269 htab = elf_i386_hash_table (info);
3270 if (htab == NULL)
3271 return;
9f03412a 3272
4dfe6ac6
NC		 3273 base = htab->tls_module_base;
3274 if (base == NULL)
9f03412a
AO		 3275 return;
3276
4dfe6ac6 3277 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3278}
3279
13ae64f3
JJ		 3280/* Return the base VMA address which should be subtracted from real addresses
3281 when resolving @dtpoff relocation.
3282 This is PT_TLS segment p_vaddr. */
3283
3284static bfd_vma
eb4ff4d6 3285elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3286{
e1918d23
AM		 3287 /* If tls_sec is NULL, we should have signalled an error already. */
3288 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3289 return 0;
e1918d23 3290 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3291}
3292
3293/* Return the relocation value for @tpoff relocation
3294 if STT_TLS virtual address is ADDRESS. */
3295
3296static bfd_vma
eb4ff4d6 3297elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3298{
e1918d23 3299 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3300 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3301 bfd_vma static_tls_size;
13ae64f3 3302
e1918d23
AM		 3303 /* If tls_sec is NULL, we should have signalled an error already. */
3304 if (htab->tls_sec == NULL)
6a30718d 3305 return 0;
7dc98aea
RO		 3306
3307 /* Consider special static TLS alignment requirements. */
3308 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3309 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3310}
3311
252b5132
RH		 3312/* Relocate an i386 ELF section. */
3313
b34976b6 3314static bfd_boolean
55fd94b0
AM		 3315elf_i386_relocate_section (bfd *output_bfd,
3316 struct bfd_link_info *info,
3317 bfd *input_bfd,
3318 asection *input_section,
3319 bfd_byte *contents,
3320 Elf_Internal_Rela *relocs,
3321 Elf_Internal_Sym *local_syms,
3322 asection **local_sections)
252b5132 3323{
6725bdbf 3324 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3325 Elf_Internal_Shdr *symtab_hdr;
3326 struct elf_link_hash_entry **sym_hashes;
3327 bfd_vma *local_got_offsets;
67a4f2b7 3328 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3329 Elf_Internal_Rela *rel;
3330 Elf_Internal_Rela *relend;
3348747a 3331 bfd_boolean is_vxworks_tls;
25e762b9 3332 unsigned plt_entry_size;
252b5132 3333
0ffa91dd 3334 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3335
6725bdbf 3336 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3337 if (htab == NULL)
3338 return FALSE;
0ffa91dd 3339 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3340 sym_hashes = elf_sym_hashes (input_bfd);
3341 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3342 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3343 /* We have to handle relocations in vxworks .tls_vars sections
3344 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3345 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3346 && info->shared
3348747a
NS		 3347 && !strcmp (input_section->output_section->name,
3348 ".tls_vars"));
252b5132 3349
eb4ff4d6 3350 elf_i386_set_tls_module_base (info);
9f03412a 3351
25e762b9
RM		 3352 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3353
252b5132
RH		 3354 rel = relocs;
3355 relend = relocs + input_section->reloc_count;
3356 for (; rel < relend; rel++)
3357 {
13ae64f3 3358 unsigned int r_type;
252b5132
RH		 3359 reloc_howto_type *howto;
3360 unsigned long r_symndx;
3361 struct elf_link_hash_entry *h;
dd7e64d4 3362 struct elf_i386_link_hash_entry *eh;
252b5132
RH		 3363 Elf_Internal_Sym *sym;
3364 asection *sec;
dd7e64d4 3365 bfd_vma off, offplt, plt_offset;
252b5132 3366 bfd_vma relocation;
b34976b6 3367 bfd_boolean unresolved_reloc;
252b5132 3368 bfd_reloc_status_type r;
1b452ec6 3369 unsigned int indx;
13ae64f3 3370 int tls_type;
1788fc08 3371 bfd_vma st_size;
dd7e64d4 3372 asection *resolved_plt;
252b5132
RH		 3373
3374 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3375 if (r_type == R_386_GNU_VTINHERIT
3376 || r_type == R_386_GNU_VTENTRY)
252b5132 3377 continue;
dc47f327 3378
55fd94b0 3379 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3380 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3381 >= R_386_ext - R_386_standard)
3382 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3383 >= R_386_irelative - R_386_ext))
252b5132 3384 {
6ba842b6 3385 (*_bfd_error_handler)
d003868e
AM		 3386 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3387 input_bfd, input_section, r_type);
252b5132 3388 bfd_set_error (bfd_error_bad_value);
b34976b6 3389 return FALSE;
252b5132 3390 }
1b452ec6 3391 howto = elf_howto_table + indx;
252b5132
RH		 3392
3393 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3394 h = NULL;
3395 sym = NULL;
3396 sec = NULL;
b34976b6 3397 unresolved_reloc = FALSE;
252b5132
RH		 3398 if (r_symndx < symtab_hdr->sh_info)
3399 {
3400 sym = local_syms + r_symndx;
3401 sec = local_sections[r_symndx];
3402 relocation = (sec->output_section->vma
3403 + sec->output_offset
3404 + sym->st_value);
1788fc08 3405 st_size = sym->st_size;
ab96bf03
AM		 3406
3407 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3408 && ((sec->flags & SEC_MERGE) != 0
3409 || (info->relocatable
3410 && sec->output_offset != 0)))
f8df10f4 3411 {
f8df10f4 3412 bfd_vma addend;
4a335f3d 3413 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3414
4a335f3d 3415 switch (howto->size)
f8df10f4 3416 {
4a335f3d
AM		 3417 case 0:
3418 addend = bfd_get_8 (input_bfd, where);
3419 if (howto->pc_relative)
3420 {
3421 addend = (addend ^ 0x80) - 0x80;
3422 addend += 1;
3423 }
3424 break;
3425 case 1:
3426 addend = bfd_get_16 (input_bfd, where);
3427 if (howto->pc_relative)
3428 {
3429 addend = (addend ^ 0x8000) - 0x8000;
3430 addend += 2;
3431 }
3432 break;
3433 case 2:
3434 addend = bfd_get_32 (input_bfd, where);
3435 if (howto->pc_relative)
3436 {
3437 addend = (addend ^ 0x80000000) - 0x80000000;
3438 addend += 4;
3439 }
3440 break;
3441 default:
3442 abort ();
f8df10f4
JJ		 3443 }
3444
ab96bf03
AM		 3445 if (info->relocatable)
3446 addend += sec->output_offset;
3447 else
3448 {
3449 asection *msec = sec;
3450 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3451 addend);
3452 addend -= relocation;
3453 addend += msec->output_section->vma + msec->output_offset;
3454 }
4a335f3d
AM		 3455
3456 switch (howto->size)
3457 {
3458 case 0:
16a10388 3459 /* FIXME: overflow checks. */
4a335f3d
AM		 3460 if (howto->pc_relative)
3461 addend -= 1;
3462 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3463 break;
3464 case 1:
3465 if (howto->pc_relative)
3466 addend -= 2;
3467 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3468 break;
3469 case 2:
3470 if (howto->pc_relative)
3471 addend -= 4;
3472 bfd_put_32 (input_bfd, addend, where);
3473 break;
3474 }
f8df10f4 3475 }
1f85278f
L		 3476 else if (!info->relocatable
3477 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3478 {
3479 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3480 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3481 FALSE);
c25bc9fc
L		 3482 if (h == NULL)
3483 abort ();
3484
23209a78 3485 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3486 h->root.u.def.value = sym->st_value;
3487 h->root.u.def.section = sec;
3488 }
252b5132
RH		 3489 }
3490 else
3491 {
3d540e93 3492 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3493 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3494
b2a8e766
AM		 3495 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3496 r_symndx, symtab_hdr, sym_hashes,
3497 h, sec, relocation,
62d887d4 3498 unresolved_reloc, warned, ignored);
1788fc08 3499 st_size = h->size;
252b5132
RH		 3500 }
3501
dbaa2011 3502 if (sec != NULL && discarded_section (sec))
0672748a 3503 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3504 rel, 1, relend, howto, 0, contents);
9635fe29 3505
ab96bf03
AM		 3506 if (info->relocatable)
3507 continue;
3508
cbe950e9
L		 3509 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3510 it here if it is defined in a non-shared object. */
3511 if (h != NULL
3512 && h->type == STT_GNU_IFUNC
3513 && h->def_regular)
3514 {
3515 asection *plt, *gotplt, *base_got;
3516 bfd_vma plt_index;
4c544807 3517 const char *name;
cbe950e9 3518
97dc35c8
L		 3519 if ((input_section->flags & SEC_ALLOC) == 0)
3520 {
3521 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3522 sections because such sections are not SEC_ALLOC and
3523 thus ld.so will not process them. */
3524 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 3525 continue;
97dc35c8
L		 3526 abort ();
3527 }
3528 else if (h->plt.offset == (bfd_vma) -1)
cbe950e9
L		 3529 abort ();
3530
3531 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3532 if (htab->elf.splt != NULL)
cbe950e9 3533 {
6de2ae4a
L		 3534 plt = htab->elf.splt;
3535 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3536 }
3537 else
3538 {
6de2ae4a
L		 3539 plt = htab->elf.iplt;
3540 gotplt = htab->elf.igotplt;
cbe950e9
L		 3541 }
3542
3543 relocation = (plt->output_section->vma
3544 + plt->output_offset + h->plt.offset);
3545
3546 switch (r_type)
3547 {
3548 default:
4c544807
L		 3549 if (h->root.root.string)
3550 name = h->root.root.string;
3551 else
3552 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3553 NULL);
cbe950e9
L		 3554 (*_bfd_error_handler)
3555 (_("%B: relocation %s against STT_GNU_IFUNC "
3556 "symbol `%s' isn't handled by %s"), input_bfd,
3557 elf_howto_table[r_type].name,
4c544807 3558 name, __FUNCTION__);
cbe950e9
L		 3559 bfd_set_error (bfd_error_bad_value);
3560 return FALSE;
3561
3562 case R_386_32:
710ab287 3563 /* Generate dynamic relcoation only when there is a
c293fa49 3564 non-GOT reference in a shared object. */
710ab287
L		 3565 if (info->shared && h->non_got_ref)
3566 {
3567 Elf_Internal_Rela outrel;
710ab287
L		 3568 asection *sreloc;
3569 bfd_vma offset;
3570
c25bc9fc
L		 3571 /* Need a dynamic relocation to get the real function
3572 adddress. */
710ab287
L		 3573 offset = _bfd_elf_section_offset (output_bfd,
3574 info,
3575 input_section,
3576 rel->r_offset);
3577 if (offset == (bfd_vma) -1
3578 || offset == (bfd_vma) -2)
3579 abort ();
3580
3581 outrel.r_offset = (input_section->output_section->vma
3582 + input_section->output_offset
3583 + offset);
3584
3585 if (h->dynindx == -1
44c4ea11
L		 3586 || h->forced_local
3587 || info->executable)
710ab287
L		 3588 {
3589 /* This symbol is resolved locally. */
56b8aada
L		 3590 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3591 bfd_put_32 (output_bfd,
3592 (h->root.u.def.value
3593 + h->root.u.def.section->output_section->vma
3594 + h->root.u.def.section->output_offset),
3595 contents + offset);
710ab287
L		 3596 }
3597 else
56b8aada 3598 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3599
6de2ae4a 3600 sreloc = htab->elf.irelifunc;
59d6ffb2 3601 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3602
3603 /* If this reloc is against an external symbol, we
3604 do not want to fiddle with the addend. Otherwise,
3605 we need to include the symbol value so that it
3606 becomes an addend for the dynamic reloc. For an
3607 internal symbol, we have updated addend. */
56b8aada 3608 continue;
710ab287 3609 }
d59a60e9 3610 /* FALLTHROUGH */
cbe950e9
L		 3611 case R_386_PC32:
3612 case R_386_PLT32:
3613 goto do_relocation;
3614
3615 case R_386_GOT32:
6de2ae4a 3616 base_got = htab->elf.sgot;
cbe950e9
L		 3617 off = h->got.offset;
3618
7afd84dc 3619 if (base_got == NULL)
cbe950e9
L		 3620 abort ();
3621
7afd84dc 3622 if (off == (bfd_vma) -1)
cbe950e9 3623 {
7afd84dc
L		 3624 /* We can't use h->got.offset here to save state, or
3625 even just remember the offset, as finish_dynamic_symbol
3626 would use that as offset into .got. */
6bbec505 3627
6de2ae4a 3628 if (htab->elf.splt != NULL)
7afd84dc 3629 {
25e762b9 3630 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3631 off = (plt_index + 3) * 4;
6de2ae4a 3632 base_got = htab->elf.sgotplt;
7afd84dc 3633 }
cbe950e9
L		 3634 else
3635 {
25e762b9 3636 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3637 off = plt_index * 4;
6de2ae4a 3638 base_got = htab->elf.igotplt;
7afd84dc
L		 3639 }
3640
3641 if (h->dynindx == -1
3642 || h->forced_local
3643 || info->symbolic)
3644 {
3645 /* This references the local defitionion. We must
3646 initialize this entry in the global offset table.
3647 Since the offset must always be a multiple of 8,
3648 we use the least significant bit to record
3649 whether we have initialized it already.
3650
3651 When doing a dynamic link, we create a .rela.got
3652 relocation entry to initialize the value. This
3653 is done in the finish_dynamic_symbol routine. */
3654 if ((off & 1) != 0)
3655 off &= ~1;
3656 else
3657 {
3658 bfd_put_32 (output_bfd, relocation,
3659 base_got->contents + off);
3660 h->got.offset |= 1;
3661 }
cbe950e9 3662 }
cbe950e9 3663
7afd84dc 3664 relocation = off;
cbe950e9 3665
7afd84dc 3666 /* Adjust for static executables. */
6de2ae4a 3667 if (htab->elf.splt == NULL)
7afd84dc
L		 3668 relocation += gotplt->output_offset;
3669 }
3670 else
0018b0a3
L		 3671 {
3672 relocation = (base_got->output_section->vma
3673 + base_got->output_offset + off
3674 - gotplt->output_section->vma
3675 - gotplt->output_offset);
3676 /* Adjust for static executables. */
6de2ae4a 3677 if (htab->elf.splt == NULL)
0018b0a3
L		 3678 relocation += gotplt->output_offset;
3679 }
3680
cbe950e9
L		 3681 goto do_relocation;
3682
3683 case R_386_GOTOFF:
3684 relocation -= (gotplt->output_section->vma
3685 + gotplt->output_offset);
3686 goto do_relocation;
3687 }
3688 }
3689
252b5132
RH		 3690 switch (r_type)
3691 {
3692 case R_386_GOT32:
3693 /* Relocation is to the entry for this symbol in the global
3694 offset table. */
6de2ae4a 3695 if (htab->elf.sgot == NULL)
ffb2e45b 3696 abort ();
252b5132
RH		 3697
3698 if (h != NULL)
3699 {
b34976b6 3700 bfd_boolean dyn;
252b5132
RH		 3701
3702 off = h->got.offset;
ebe50bae 3703 dyn = htab->elf.dynamic_sections_created;
26e41594 3704 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3705 || (info->shared
586119b3 3706 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3707 || (ELF_ST_VISIBILITY (h->other)
3708 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3709 {
3710 /* This is actually a static link, or it is a
3711 -Bsymbolic link and the symbol is defined
3712 locally, or the symbol was forced to be local
3713 because of a version file. We must initialize
3714 this entry in the global offset table. Since the
3715 offset must always be a multiple of 4, we use the
3716 least significant bit to record whether we have
3717 initialized it already.
3718
3719 When doing a dynamic link, we create a .rel.got
3720 relocation entry to initialize the value. This
3721 is done in the finish_dynamic_symbol routine. */
3722 if ((off & 1) != 0)
3723 off &= ~1;
3724 else
3725 {
3726 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3727 htab->elf.sgot->contents + off);
252b5132
RH		 3728 h->got.offset |= 1;
3729 }
3730 }
8c694914 3731 else
b34976b6 3732 unresolved_reloc = FALSE;
252b5132
RH		 3733 }
3734 else
3735 {
ffb2e45b
AM		 3736 if (local_got_offsets == NULL)
3737 abort ();
252b5132
RH		 3738
3739 off = local_got_offsets[r_symndx];
3740
3741 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3742 the least significant bit to record whether we have
3743 already generated the necessary reloc. */
252b5132
RH		 3744 if ((off & 1) != 0)
3745 off &= ~1;
3746 else
3747 {
6725bdbf 3748 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3749 htab->elf.sgot->contents + off);
252b5132
RH		 3750
3751 if (info->shared)
3752 {
947216bf
AM		 3753 asection *s;
3754 Elf_Internal_Rela outrel;
252b5132 3755
6de2ae4a 3756 s = htab->elf.srelgot;
947216bf 3757 if (s == NULL)
ffb2e45b 3758 abort ();
252b5132 3759
6de2ae4a
L		 3760 outrel.r_offset = (htab->elf.sgot->output_section->vma
3761 + htab->elf.sgot->output_offset
252b5132
RH		 3762 + off);
3763 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 3764 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 3765 }
3766
3767 local_got_offsets[r_symndx] |= 1;
3768 }
252b5132
RH		 3769 }
3770
ffb2e45b
AM		 3771 if (off >= (bfd_vma) -2)
3772 abort ();
3773
6de2ae4a
L		 3774 relocation = htab->elf.sgot->output_section->vma
3775 + htab->elf.sgot->output_offset + off
3776 - htab->elf.sgotplt->output_section->vma
3777 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3778 break;
3779
3780 case R_386_GOTOFF:
3781 /* Relocation is relative to the start of the global offset
3782 table. */
3783
3d949995
L		 3784 /* Check to make sure it isn't a protected function or data
3785 symbol for shared library since it may not be local when
3786 used as function address or with copy relocation. We also
e3c0e327 3787 need to make sure that a symbol is referenced locally. */
d5597ebc 3788 if (!info->executable && h)
90f487df 3789 {
41bed6dd
L		 3790 if (!h->def_regular)
3791 {
3792 const char *v;
3793
3794 switch (ELF_ST_VISIBILITY (h->other))
3795 {
3796 case STV_HIDDEN:
3797 v = _("hidden symbol");
3798 break;
3799 case STV_INTERNAL:
3800 v = _("internal symbol");
3801 break;
3802 case STV_PROTECTED:
3803 v = _("protected symbol");
3804 break;
3805 default:
3806 v = _("symbol");
3807 break;
3808 }
3809
3810 (*_bfd_error_handler)
3811 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3812 input_bfd, v, h->root.root.string);
3813 bfd_set_error (bfd_error_bad_value);
3814 return FALSE;
3815 }
d5597ebc 3816 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
3d949995
L		 3817 && (h->type == STT_FUNC
3818 || h->type == STT_OBJECT)
41bed6dd
L		 3819 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3820 {
3821 (*_bfd_error_handler)
3d949995
L		 3822 (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
3823 input_bfd,
3824 h->type == STT_FUNC ? "function" : "data",
3825 h->root.root.string);
41bed6dd
L		 3826 bfd_set_error (bfd_error_bad_value);
3827 return FALSE;
3828 }
90f487df
L		 3829 }
3830
8c37241b
JJ		 3831 /* Note that sgot is not involved in this
3832 calculation. We always want the start of .got.plt. If we
3833 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3834 permitted by the ABI, we might have to change this
3835 calculation. */
6de2ae4a
L		 3836 relocation -= htab->elf.sgotplt->output_section->vma
3837 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3838 break;
3839
3840 case R_386_GOTPC:
3841 /* Use global offset table as symbol value. */
6de2ae4a
L		 3842 relocation = htab->elf.sgotplt->output_section->vma
3843 + htab->elf.sgotplt->output_offset;
b34976b6 3844 unresolved_reloc = FALSE;
252b5132
RH		 3845 break;
3846
3847 case R_386_PLT32:
3848 /* Relocation is to the entry for this symbol in the
3849 procedure linkage table. */
3850
dd5724d5 3851 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3852 without using the procedure linkage table. */
252b5132
RH		 3853 if (h == NULL)
3854 break;
3855
dd7e64d4
L		 3856 eh = (struct elf_i386_link_hash_entry *) h;
3857 if ((h->plt.offset == (bfd_vma) -1
3858 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 3859 || htab->elf.splt == NULL)
252b5132
RH		 3860 {
3861 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3862 happens when statically linking PIC code, or when
3863 using -Bsymbolic. */
252b5132
RH		 3864 break;
3865 }
3866
dd7e64d4
L		 3867 if (h->plt.offset != (bfd_vma) -1)
3868 {
3869 resolved_plt = htab->elf.splt;
3870 plt_offset = h->plt.offset;
3871 }
3872 else
3873 {
3874 resolved_plt = htab->plt_got;
3875 plt_offset = eh->plt_got.offset;
3876 }
3877
3878 relocation = (resolved_plt->output_section->vma
3879 + resolved_plt->output_offset
3880 + plt_offset);
b34976b6 3881 unresolved_reloc = FALSE;
252b5132
RH		 3882 break;
3883
1788fc08 3884 case R_386_SIZE32:
1788fc08
L		 3885 /* Set to symbol size. */
3886 relocation = st_size;
3887 /* Fall through. */
3888
252b5132
RH		 3889 case R_386_32:
3890 case R_386_PC32:
3348747a
NS		 3891 if ((input_section->flags & SEC_ALLOC) == 0
3892 || is_vxworks_tls)
ec338859
AM		 3893 break;
3894
12d0ee4a 3895 if ((info->shared
ef5aade5
L		 3896 && (h == NULL
3897 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3898 || h->root.type != bfd_link_hash_undefweak)
1788fc08 3899 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3900 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3901 || (ELIMINATE_COPY_RELOCS
3902 && !info->shared
12d0ee4a
AM		 3903 && h != NULL
3904 && h->dynindx != -1
f5385ebf
AM		 3905 && !h->non_got_ref
3906 && ((h->def_dynamic
3907 && !h->def_regular)
28d0b90e 3908 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3909 || h->root.type == bfd_link_hash_undefined)))
252b5132 3910 {
947216bf 3911 Elf_Internal_Rela outrel;
b34976b6 3912 bfd_boolean skip, relocate;
0c715baa 3913 asection *sreloc;
252b5132
RH		 3914
3915 /* When generating a shared object, these relocations
3916 are copied into the output file to be resolved at run
3917 time. */
3918
b34976b6
AM		 3919 skip = FALSE;
3920 relocate = FALSE;
252b5132 3921
c629eae0
JJ		 3922 outrel.r_offset =
3923 _bfd_elf_section_offset (output_bfd, info, input_section,
3924 rel->r_offset);
3925 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3926 skip = TRUE;
0bb2d96a 3927 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3928 skip = TRUE, relocate = TRUE;
252b5132
RH		 3929 outrel.r_offset += (input_section->output_section->vma
3930 + input_section->output_offset);
3931
3932 if (skip)
0bb2d96a 3933 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3934 else if (h != NULL
3935 && h->dynindx != -1
3936 && (r_type == R_386_PC32
3937 || !info->shared
55255dae 3938 || !SYMBOLIC_BIND (info, h)
f5385ebf 3939 || !h->def_regular))
0bb2d96a 3940 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3941 else
3942 {
5a15f56f 3943 /* This symbol is local, or marked to become local. */
b34976b6 3944 relocate = TRUE;
5a15f56f 3945 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3946 }
3947
cbe950e9 3948 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3949
62d78908
L		 3950 if (sreloc == NULL || sreloc->contents == NULL)
3951 {
3952 r = bfd_reloc_notsupported;
3953 goto check_relocation_error;
3954 }
0c715baa 3955
59d6ffb2 3956 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 3957
3958 /* If this reloc is against an external symbol, we do
3959 not want to fiddle with the addend. Otherwise, we
3960 need to include the symbol value so that it becomes
3961 an addend for the dynamic reloc. */
0f88be7a 3962 if (! relocate)
252b5132
RH		 3963 continue;
3964 }
252b5132
RH		 3965 break;
3966
37e55690 3967 case R_386_TLS_IE:
1d85728f 3968 if (!info->executable)
37e55690 3969 {
947216bf 3970 Elf_Internal_Rela outrel;
37e55690 3971 asection *sreloc;
37e55690
JJ		 3972
3973 outrel.r_offset = rel->r_offset
3974 + input_section->output_section->vma
3975 + input_section->output_offset;
3976 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3977 sreloc = elf_section_data (input_section)->sreloc;
3978 if (sreloc == NULL)
3979 abort ();
59d6ffb2 3980 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3981 }
3982 /* Fall through */
3983
13ae64f3 3984 case R_386_TLS_GD:
67a4f2b7
AO		 3985 case R_386_TLS_GOTDESC:
3986 case R_386_TLS_DESC_CALL:
13ae64f3 3987 case R_386_TLS_IE_32:
37e55690 3988 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3989 tls_type = GOT_UNKNOWN;
3990 if (h == NULL && local_got_offsets)
3991 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3992 else if (h != NULL)
142411ca 3993 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3994 if (tls_type == GOT_TLS_IE)
3995 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3996
3997 if (! elf_i386_tls_transition (info, input_bfd,
3998 input_section, contents,
3999 symtab_hdr, sym_hashes,
4000 &r_type, tls_type, rel,
4c544807 4001 relend, h, r_symndx))
142411ca 4002 return FALSE;
13ae64f3
JJ		 4003
4004 if (r_type == R_386_TLS_LE_32)
4005 {
82e51918 4006 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 4007 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
4008 {
142411ca 4009 unsigned int type;
13ae64f3
JJ		 4010 bfd_vma roff;
4011
4012 /* GD->LE transition. */
13ae64f3 4013 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4014 if (type == 0x04)
4015 {
4016 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4017 Change it into:
4018 movl %gs:0, %eax; subl $foo@tpoff, %eax
4019 (6 byte form of subl). */
13ae64f3
JJ		 4020 memcpy (contents + rel->r_offset - 3,
4021 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 4022 roff = rel->r_offset + 5;
13ae64f3
JJ		 4023 }
4024 else
4025 {
142411ca
L		 4026 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4027 Change it into:
4028 movl %gs:0, %eax; subl $foo@tpoff, %eax
4029 (6 byte form of subl). */
4030 memcpy (contents + rel->r_offset - 2,
4031 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
4032 roff = rel->r_offset + 6;
13ae64f3 4033 }
eb4ff4d6 4034 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 4035 contents + roff);
a3fadc9a 4036 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4037 rel++;
4038 continue;
4039 }
67a4f2b7
AO		 4040 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4041 {
4042 /* GDesc -> LE transition.
4043 It's originally something like:
4044 leal x@tlsdesc(%ebx), %eax
4045
4046 leal x@ntpoff, %eax
4047
4048 Registers other than %eax may be set up here. */
4049
142411ca 4050 unsigned int val;
67a4f2b7
AO		 4051 bfd_vma roff;
4052
67a4f2b7 4053 roff = rel->r_offset;
67a4f2b7 4054 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 4055
4056 /* Now modify the instruction as appropriate. */
4057 /* aoliva FIXME: remove the above and xor the byte
4058 below with 0x86. */
4059 bfd_put_8 (output_bfd, val ^ 0x86,
4060 contents + roff - 1);
eb4ff4d6 4061 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 4062 contents + roff);
4063 continue;
4064 }
4065 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4066 {
4067 /* GDesc -> LE transition.
4068 It's originally:
4069 call *(%eax)
4070 Turn it into:
142411ca 4071 xchg %ax,%ax */
67a4f2b7 4072
67a4f2b7 4073 bfd_vma roff;
6bbec505 4074
67a4f2b7 4075 roff = rel->r_offset;
10efb593 4076 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4077 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4078 continue;
4079 }
37e55690 4080 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 4081 {
142411ca 4082 unsigned int val;
13ae64f3
JJ		 4083
4084 /* IE->LE transition:
37e55690
JJ		 4085 Originally it can be one of:
4086 movl foo, %eax
4087 movl foo, %reg
4088 addl foo, %reg
4089 We change it into:
4090 movl $foo, %eax
4091 movl $foo, %reg
4092 addl $foo, %reg. */
37e55690 4093 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 4094 if (val == 0xa1)
4095 {
4096 /* movl foo, %eax. */
55fd94b0
AM		 4097 bfd_put_8 (output_bfd, 0xb8,
4098 contents + rel->r_offset - 1);
37e55690 4099 }
299bf759 4100 else
37e55690 4101 {
142411ca
L		 4102 unsigned int type;
4103
55fd94b0
AM		 4104 type = bfd_get_8 (input_bfd,
4105 contents + rel->r_offset - 2);
299bf759 4106 switch (type)
26e41594 4107 {
299bf759
L		 4108 case 0x8b:
4109 /* movl */
299bf759
L		 4110 bfd_put_8 (output_bfd, 0xc7,
4111 contents + rel->r_offset - 2);
4112 bfd_put_8 (output_bfd,
4113 0xc0 | ((val >> 3) & 7),
4114 contents + rel->r_offset - 1);
4115 break;
4116 case 0x03:
4117 /* addl */
299bf759
L		 4118 bfd_put_8 (output_bfd, 0x81,
4119 contents + rel->r_offset - 2);
4120 bfd_put_8 (output_bfd,
4121 0xc0 | ((val >> 3) & 7),
4122 contents + rel->r_offset - 1);
4123 break;
4124 default:
4125 BFD_FAIL ();
4126 break;
26e41594 4127 }
37e55690 4128 }
eb4ff4d6 4129 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4130 contents + rel->r_offset);
4131 continue;
4132 }
4133 else
4134 {
4135 unsigned int val, type;
4136
4137 /* {IE_32,GOTIE}->LE transition:
4138 Originally it can be one of:
13ae64f3 4139 subl foo(%reg1), %reg2
13ae64f3 4140 movl foo(%reg1), %reg2
37e55690 4141 addl foo(%reg1), %reg2
13ae64f3
JJ		 4142 We change it into:
4143 subl $foo, %reg2
37e55690
JJ		 4144 movl $foo, %reg2 (6 byte form)
4145 addl $foo, %reg2. */
13ae64f3
JJ		 4146 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4147 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4148 if (type == 0x8b)
4149 {
4150 /* movl */
13ae64f3
JJ		 4151 bfd_put_8 (output_bfd, 0xc7,
4152 contents + rel->r_offset - 2);
4153 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4154 contents + rel->r_offset - 1);
4155 }
4156 else if (type == 0x2b)
4157 {
4158 /* subl */
13ae64f3
JJ		 4159 bfd_put_8 (output_bfd, 0x81,
4160 contents + rel->r_offset - 2);
4161 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4162 contents + rel->r_offset - 1);
4163 }
37e55690
JJ		 4164 else if (type == 0x03)
4165 {
4166 /* addl */
4167 bfd_put_8 (output_bfd, 0x81,
4168 contents + rel->r_offset - 2);
4169 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4170 contents + rel->r_offset - 1);
4171 }
13ae64f3
JJ		 4172 else
4173 BFD_FAIL ();
37e55690 4174 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4175 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4176 contents + rel->r_offset);
4177 else
eb4ff4d6 4178 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4179 contents + rel->r_offset);
13ae64f3
JJ		 4180 continue;
4181 }
4182 }
4183
6de2ae4a 4184 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4185 abort ();
4186
4187 if (h != NULL)
67a4f2b7
AO		 4188 {
4189 off = h->got.offset;
4190 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4191 }
13ae64f3
JJ		 4192 else
4193 {
4194 if (local_got_offsets == NULL)
4195 abort ();
4196
4197 off = local_got_offsets[r_symndx];
67a4f2b7 4198 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4199 }
4200
4201 if ((off & 1) != 0)
4202 off &= ~1;
26e41594 4203 else
13ae64f3 4204 {
947216bf 4205 Elf_Internal_Rela outrel;
91d6fa6a 4206 int dr_type;
67a4f2b7 4207 asection *sreloc;
13ae64f3 4208
6de2ae4a 4209 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4210 abort ();
4211
67a4f2b7
AO		 4212 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4213
4214 if (GOT_TLS_GDESC_P (tls_type))
4215 {
59d6ffb2 4216 bfd_byte *loc;
67a4f2b7
AO		 4217 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4218 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4219 <= htab->elf.sgotplt->size);
4220 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4221 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4222 + offplt
4223 + htab->sgotplt_jump_table_size);
6de2ae4a 4224 sreloc = htab->elf.srelplt;
67a4f2b7 4225 loc = sreloc->contents;
5ae0bfb6
RS		 4226 loc += (htab->next_tls_desc_index++
4227 * sizeof (Elf32_External_Rel));
67a4f2b7 4228 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4229 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4230 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4231 if (indx == 0)
4232 {
4233 BFD_ASSERT (! unresolved_reloc);
4234 bfd_put_32 (output_bfd,
eb4ff4d6 4235 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4236 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4237 + htab->sgotplt_jump_table_size + 4);
4238 }
4239 else
4240 {
4241 bfd_put_32 (output_bfd, 0,
6de2ae4a 4242 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4243 + htab->sgotplt_jump_table_size + 4);
4244 }
4245 }
4246
6de2ae4a 4247 sreloc = htab->elf.srelgot;
67a4f2b7 4248
6de2ae4a
L		 4249 outrel.r_offset = (htab->elf.sgot->output_section->vma
4250 + htab->elf.sgot->output_offset + off);
13ae64f3 4251
67a4f2b7 4252 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4253 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4254 else if (GOT_TLS_GDESC_P (tls_type))
4255 goto dr_done;
37e55690
JJ		 4256 else if (tls_type == GOT_TLS_IE_POS)
4257 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4258 else
4259 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4260
37e55690 4261 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4262 bfd_put_32 (output_bfd,
4263 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4264 htab->elf.sgot->contents + off);
37e55690 4265 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4266 bfd_put_32 (output_bfd,
eb4ff4d6 4267 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4268 htab->elf.sgot->contents + off);
67a4f2b7 4269 else if (dr_type != R_386_TLS_DESC)
c366c25e 4270 bfd_put_32 (output_bfd, 0,
6de2ae4a 4271 htab->elf.sgot->contents + off);
13ae64f3 4272 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4273
59d6ffb2 4274 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4275
67a4f2b7 4276 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4277 {
4278 if (indx == 0)
4279 {
82e51918 4280 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4281 bfd_put_32 (output_bfd,
eb4ff4d6 4282 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4283 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4284 }
4285 else
4286 {
4287 bfd_put_32 (output_bfd, 0,
6de2ae4a 4288 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4289 outrel.r_info = ELF32_R_INFO (indx,
4290 R_386_TLS_DTPOFF32);
4291 outrel.r_offset += 4;
59d6ffb2 4292 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4293 }
4294 }
37e55690
JJ		 4295 else if (tls_type == GOT_TLS_IE_BOTH)
4296 {
4297 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4298 (indx == 0
4299 ? relocation - elf_i386_dtpoff_base (info)
4300 : 0),
6de2ae4a 4301 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4302 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4303 outrel.r_offset += 4;
59d6ffb2 4304 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4305 }
13ae64f3 4306
67a4f2b7 4307 dr_done:
13ae64f3
JJ		 4308 if (h != NULL)
4309 h->got.offset |= 1;
4310 else
4311 local_got_offsets[r_symndx] |= 1;
4312 }
4313
67a4f2b7
AO		 4314 if (off >= (bfd_vma) -2
4315 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4316 abort ();
67a4f2b7
AO		 4317 if (r_type == R_386_TLS_GOTDESC
4318 || r_type == R_386_TLS_DESC_CALL)
4319 {
4320 relocation = htab->sgotplt_jump_table_size + offplt;
4321 unresolved_reloc = FALSE;
4322 }
4323 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4324 {
6de2ae4a
L		 4325 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4326 + htab->elf.sgotplt->output_offset;
4327 relocation = htab->elf.sgot->output_section->vma
4328 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4329 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4330 && tls_type == GOT_TLS_IE_BOTH)
4331 relocation += 4;
4332 if (r_type == R_386_TLS_IE)
8c37241b 4333 relocation += g_o_t;
b34976b6 4334 unresolved_reloc = FALSE;
13ae64f3 4335 }
67a4f2b7 4336 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4337 {
4338 unsigned int val, type;
4339 bfd_vma roff;
4340
4341 /* GD->IE transition. */
13ae64f3 4342 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4343 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4344 if (type == 0x04)
4345 {
4346 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4347 Change it into:
4348 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4349 val >>= 3;
142411ca 4350 roff = rel->r_offset - 3;
13ae64f3
JJ		 4351 }
4352 else
4353 {
4354 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4355 Change it into:
4356 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4357 roff = rel->r_offset - 2;
4358 }
4359 memcpy (contents + roff,
4360 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4361 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4362 /* If foo is used only with foo@gotntpoff(%reg) and
4363 foo@indntpoff, but not with foo@gottpoff(%reg), change
4364 subl $foo@gottpoff(%reg), %eax
4365 into:
4366 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4367 if (tls_type == GOT_TLS_IE_POS)
4368 contents[roff + 6] = 0x03;
8c37241b 4369 bfd_put_32 (output_bfd,
6de2ae4a
L		 4370 htab->elf.sgot->output_section->vma
4371 + htab->elf.sgot->output_offset + off
4372 - htab->elf.sgotplt->output_section->vma
4373 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4374 contents + roff + 8);
4375 /* Skip R_386_PLT32. */
4376 rel++;
4377 continue;
4378 }
67a4f2b7
AO		 4379 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4380 {
4381 /* GDesc -> IE transition.
4382 It's originally something like:
4383 leal x@tlsdesc(%ebx), %eax
4384
4385 Change it to:
142411ca 4386 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4387 or:
4388 movl x@gottpoff(%ebx), %eax # before negl %eax
4389
4390 Registers other than %eax may be set up here. */
4391
67a4f2b7
AO		 4392 bfd_vma roff;
4393
4394 /* First, make sure it's a leal adding ebx to a 32-bit
4395 offset into any register, although it's probably
4396 almost always going to be eax. */
4397 roff = rel->r_offset;
67a4f2b7
AO		 4398
4399 /* Now modify the instruction as appropriate. */
4400 /* To turn a leal into a movl in the form we use it, it
4401 suffices to change the first byte from 0x8d to 0x8b.
4402 aoliva FIXME: should we decide to keep the leal, all
4403 we have to do is remove the statement below, and
4404 adjust the relaxation of R_386_TLS_DESC_CALL. */
4405 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4406
4407 if (tls_type == GOT_TLS_IE_BOTH)
4408 off += 4;
4409
4410 bfd_put_32 (output_bfd,
6de2ae4a
L		 4411 htab->elf.sgot->output_section->vma
4412 + htab->elf.sgot->output_offset + off
4413 - htab->elf.sgotplt->output_section->vma
4414 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4415 contents + roff);
4416 continue;
4417 }
4418 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4419 {
4420 /* GDesc -> IE transition.
4421 It's originally:
4422 call *(%eax)
4423
4424 Change it to:
142411ca 4425 xchg %ax,%ax
67a4f2b7
AO		 4426 or
4427 negl %eax
4428 depending on how we transformed the TLS_GOTDESC above.
4429 */
4430
67a4f2b7
AO		 4431 bfd_vma roff;
4432
67a4f2b7 4433 roff = rel->r_offset;
67a4f2b7
AO		 4434
4435 /* Now modify the instruction as appropriate. */
4436 if (tls_type != GOT_TLS_IE_NEG)
4437 {
10efb593
L		 4438 /* xchg %ax,%ax */
4439 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4440 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4441 }
4442 else
4443 {
4444 /* negl %eax */
4445 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4446 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4447 }
4448
4449 continue;
4450 }
4451 else
4452 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4453 break;
4454
4455 case R_386_TLS_LDM:
142411ca
L		 4456 if (! elf_i386_tls_transition (info, input_bfd,
4457 input_section, contents,
4458 symtab_hdr, sym_hashes,
4459 &r_type, GOT_UNKNOWN, rel,
4c544807 4460 relend, h, r_symndx))
142411ca 4461 return FALSE;
13ae64f3 4462
142411ca
L		 4463 if (r_type != R_386_TLS_LDM)
4464 {
13ae64f3 4465 /* LD->LE transition:
13ae64f3
JJ		 4466 leal foo(%reg), %eax; call ___tls_get_addr.
4467 We change it into:
4468 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4469 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4470 memcpy (contents + rel->r_offset - 2,
4471 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4472 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4473 rel++;
4474 continue;
4475 }
4476
6de2ae4a 4477 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4478 abort ();
4479
4480 off = htab->tls_ldm_got.offset;
4481 if (off & 1)
4482 off &= ~1;
4483 else
4484 {
947216bf 4485 Elf_Internal_Rela outrel;
13ae64f3 4486
6de2ae4a 4487 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4488 abort ();
4489
6de2ae4a
L		 4490 outrel.r_offset = (htab->elf.sgot->output_section->vma
4491 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4492
4493 bfd_put_32 (output_bfd, 0,
6de2ae4a 4494 htab->elf.sgot->contents + off);
13ae64f3 4495 bfd_put_32 (output_bfd, 0,
6de2ae4a 4496 htab->elf.sgot->contents + off + 4);
13ae64f3 4497 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4498 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4499 htab->tls_ldm_got.offset |= 1;
4500 }
6de2ae4a
L		 4501 relocation = htab->elf.sgot->output_section->vma
4502 + htab->elf.sgot->output_offset + off
4503 - htab->elf.sgotplt->output_section->vma
4504 - htab->elf.sgotplt->output_offset;
b34976b6 4505 unresolved_reloc = FALSE;
13ae64f3
JJ		 4506 break;
4507
4508 case R_386_TLS_LDO_32:
959b0961 4509 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4510 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4511 else
4512 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4513 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4514 break;
4515
4516 case R_386_TLS_LE_32:
13ae64f3 4517 case R_386_TLS_LE:
1d85728f 4518 if (!info->executable)
37e55690 4519 {
947216bf 4520 Elf_Internal_Rela outrel;
37e55690 4521 asection *sreloc;
37e55690
JJ		 4522
4523 outrel.r_offset = rel->r_offset
4524 + input_section->output_section->vma
4525 + input_section->output_offset;
4526 if (h != NULL && h->dynindx != -1)
4527 indx = h->dynindx;
4528 else
4529 indx = 0;
4530 if (r_type == R_386_TLS_LE_32)
4531 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4532 else
4533 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4534 sreloc = elf_section_data (input_section)->sreloc;
4535 if (sreloc == NULL)
4536 abort ();
59d6ffb2 4537 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4538 if (indx)
4539 continue;
4540 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4541 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4542 else
eb4ff4d6 4543 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4544 }
4545 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4546 relocation = elf_i386_tpoff (info, relocation);
37e55690 4547 else
eb4ff4d6 4548 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4549 break;
4550
252b5132
RH		 4551 default:
4552 break;
4553 }
4554
239e1f3a
AM		 4555 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4556 because such sections are not SEC_ALLOC and thus ld.so will
4557 not process them. */
8c694914 4558 if (unresolved_reloc
239e1f3a 4559 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4560 && h->def_dynamic)
4561 && _bfd_elf_section_offset (output_bfd, info, input_section,
4562 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4563 {
4564 (*_bfd_error_handler)
843fe662 4565 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4566 input_bfd,
4567 input_section,
6a30718d 4568 (long) rel->r_offset,
843fe662 4569 howto->name,
6a30718d 4570 h->root.root.string);
b34976b6 4571 return FALSE;
6a30718d 4572 }
83be169b 4573
cbe950e9 4574do_relocation:
252b5132
RH		 4575 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4576 contents, rel->r_offset,
55fd94b0 4577 relocation, 0);
252b5132 4578
62d78908 4579check_relocation_error:
cf5c0c5b 4580 if (r != bfd_reloc_ok)
252b5132 4581 {
cf5c0c5b 4582 const char *name;
ffb2e45b 4583
cf5c0c5b
AM		 4584 if (h != NULL)
4585 name = h->root.root.string;
4586 else
4587 {
4588 name = bfd_elf_string_from_elf_section (input_bfd,
4589 symtab_hdr->sh_link,
4590 sym->st_name);
4591 if (name == NULL)
b34976b6 4592 return FALSE;
cf5c0c5b
AM		 4593 if (*name == '\0')
4594 name = bfd_section_name (input_bfd, sec);
4595 }
ffb2e45b 4596
cf5c0c5b
AM		 4597 if (r == bfd_reloc_overflow)
4598 {
cf5c0c5b 4599 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4600 (info, (h ? &h->root : NULL), name, howto->name,
4601 (bfd_vma) 0, input_bfd, input_section,
4602 rel->r_offset)))
b34976b6 4603 return FALSE;
cf5c0c5b
AM		 4604 }
4605 else
4606 {
4607 (*_bfd_error_handler)
d003868e
AM		 4608 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4609 input_bfd, input_section,
cf5c0c5b 4610 (long) rel->r_offset, name, (int) r);
b34976b6 4611 return FALSE;
cf5c0c5b 4612 }
252b5132
RH		 4613 }
4614 }
4615
b34976b6 4616 return TRUE;
252b5132
RH		 4617}
4618
4619/* Finish up dynamic symbol handling. We set the contents of various
4620 dynamic sections here. */
4621
b34976b6 4622static bfd_boolean
55fd94b0
AM		 4623elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4624 struct bfd_link_info *info,
4625 struct elf_link_hash_entry *h,
4626 Elf_Internal_Sym *sym)
252b5132 4627{
6725bdbf 4628 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4629 unsigned plt_entry_size;
4630 const struct elf_i386_backend_data *abed;
dd7e64d4 4631 struct elf_i386_link_hash_entry *eh;
252b5132 4632
6725bdbf 4633 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4634 if (htab == NULL)
4635 return FALSE;
252b5132 4636
25e762b9
RM		 4637 abed = get_elf_i386_backend_data (output_bfd);
4638 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4639
dd7e64d4
L		 4640 eh = (struct elf_i386_link_hash_entry *) h;
4641
252b5132
RH		 4642 if (h->plt.offset != (bfd_vma) -1)
4643 {
252b5132
RH		 4644 bfd_vma plt_index;
4645 bfd_vma got_offset;
947216bf
AM		 4646 Elf_Internal_Rela rel;
4647 bfd_byte *loc;
cbe950e9
L		 4648 asection *plt, *gotplt, *relplt;
4649
4650 /* When building a static executable, use .iplt, .igot.plt and
4651 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4652 if (htab->elf.splt != NULL)
cbe950e9 4653 {
6de2ae4a
L		 4654 plt = htab->elf.splt;
4655 gotplt = htab->elf.sgotplt;
4656 relplt = htab->elf.srelplt;
cbe950e9
L		 4657 }
4658 else
4659 {
6de2ae4a
L		 4660 plt = htab->elf.iplt;
4661 gotplt = htab->elf.igotplt;
4662 relplt = htab->elf.irelplt;
cbe950e9 4663 }
252b5132
RH		 4664
4665 /* This symbol has an entry in the procedure linkage table. Set
4666 it up. */
4667
cbe950e9
L		 4668 if ((h->dynindx == -1
4669 && !((h->forced_local || info->executable)
4670 && h->def_regular
4671 && h->type == STT_GNU_IFUNC))
4672 || plt == NULL
4673 || gotplt == NULL
4674 || relplt == NULL)
cec7f46a 4675 abort ();
252b5132
RH		 4676
4677 /* Get the index in the procedure linkage table which
4678 corresponds to this symbol. This is the index of this symbol
4679 in all the symbols for which we are making plt entries. The
cbe950e9 4680 first entry in the procedure linkage table is reserved.
252b5132 4681
cbe950e9 4682 Get the offset into the .got table of the entry that
252b5132 4683 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4684 The first three are reserved.
6bbec505 4685
cbe950e9
L		 4686 For static executables, we don't reserve anything. */
4687
6de2ae4a 4688 if (plt == htab->elf.splt)
cbe950e9 4689 {
e1f98742
L		 4690 got_offset = h->plt.offset / plt_entry_size - 1;
4691 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4692 }
4693 else
4694 {
e1f98742
L		 4695 got_offset = h->plt.offset / plt_entry_size;
4696 got_offset = got_offset * 4;
cbe950e9 4697 }
252b5132
RH		 4698
4699 /* Fill in the entry in the procedure linkage table. */
4700 if (! info->shared)
4701 {
25e762b9
RM		 4702 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4703 abed->plt->plt_entry_size);
252b5132 4704 bfd_put_32 (output_bfd,
cbe950e9
L		 4705 (gotplt->output_section->vma
4706 + gotplt->output_offset
252b5132 4707 + got_offset),
25e762b9
RM		 4708 plt->contents + h->plt.offset
4709 + abed->plt->plt_got_offset);
eac338cf 4710
25e762b9 4711 if (abed->is_vxworks)
eac338cf
PB		 4712 {
4713 int s, k, reloc_index;
4714
4715 /* Create the R_386_32 relocation referencing the GOT
4716 for this PLT entry. */
4717
4718 /* S: Current slot number (zero-based). */
25e762b9
RM		 4719 s = ((h->plt.offset - abed->plt->plt_entry_size)
4720 / abed->plt->plt_entry_size);
eac338cf
PB		 4721 /* K: Number of relocations for PLTResolve. */
4722 if (info->shared)
4723 k = PLTRESOLVE_RELOCS_SHLIB;
4724 else
4725 k = PLTRESOLVE_RELOCS;
4726 /* Skip the PLTresolve relocations, and the relocations for
4727 the other PLT slots. */
4728 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4729 loc = (htab->srelplt2->contents + reloc_index
4730 * sizeof (Elf32_External_Rel));
4731
6de2ae4a
L		 4732 rel.r_offset = (htab->elf.splt->output_section->vma
4733 + htab->elf.splt->output_offset
eac338cf 4734 + h->plt.offset + 2),
7325306f 4735 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4736 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4737
4738 /* Create the R_386_32 relocation referencing the beginning of
4739 the PLT for this GOT entry. */
6de2ae4a
L		 4740 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4741 + htab->elf.sgotplt->output_offset
eac338cf 4742 + got_offset);
7325306f 4743 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4744 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4745 loc + sizeof (Elf32_External_Rel));
eac338cf 4746 }
252b5132
RH		 4747 }
4748 else
4749 {
25e762b9
RM		 4750 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4751 abed->plt->plt_entry_size);
252b5132 4752 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4753 plt->contents + h->plt.offset
4754 + abed->plt->plt_got_offset);
252b5132
RH		 4755 }
4756
252b5132
RH		 4757 /* Fill in the entry in the global offset table. */
4758 bfd_put_32 (output_bfd,
cbe950e9
L		 4759 (plt->output_section->vma
4760 + plt->output_offset
252b5132 4761 + h->plt.offset
25e762b9 4762 + abed->plt->plt_lazy_offset),
cbe950e9 4763 gotplt->contents + got_offset);
252b5132
RH		 4764
4765 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4766 rel.r_offset = (gotplt->output_section->vma
4767 + gotplt->output_offset
252b5132 4768 + got_offset);
cbe950e9
L		 4769 if (h->dynindx == -1
4770 || ((info->executable
4771 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4772 && h->def_regular
4773 && h->type == STT_GNU_IFUNC))
4774 {
4775 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4776 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4777 in the .got.plt section. */
4778 bfd_put_32 (output_bfd,
23209a78 4779 (h->root.u.def.value
cbe950e9
L		 4780 + h->root.u.def.section->output_section->vma
4781 + h->root.u.def.section->output_offset),
4782 gotplt->contents + got_offset);
4783 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4784 /* R_386_IRELATIVE comes last. */
4785 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4786 }
4787 else
e1f98742
L		 4788 {
4789 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4790 plt_index = htab->next_jump_slot_index++;
4791 }
cbe950e9 4792 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4793 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4794
e1f98742
L		 4795 /* Don't fill PLT entry for static executables. */
4796 if (plt == htab->elf.splt)
4797 {
4798 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4799 plt->contents + h->plt.offset
4800 + abed->plt->plt_reloc_offset);
4801 bfd_put_32 (output_bfd, - (h->plt.offset
4802 + abed->plt->plt_plt_offset + 4),
4803 plt->contents + h->plt.offset
4804 + abed->plt->plt_plt_offset);
4805 }
dd7e64d4
L		 4806 }
4807 else if (eh->plt_got.offset != (bfd_vma) -1)
4808 {
4809 bfd_vma got_offset, plt_offset;
4810 asection *plt, *got, *gotplt;
4811 const bfd_byte *got_plt_entry;
4812
4813 /* Offset of displacement of the indirect jump. */
4814 bfd_vma plt_got_offset = 2;
e1f98742 4815
dd7e64d4
L		 4816 /* Set the entry in the GOT procedure linkage table. */
4817 plt = htab->plt_got;
4818 got = htab->elf.sgot;
4819 gotplt = htab->elf.sgotplt;
4820 got_offset = h->got.offset;
4821
4822 if (got_offset == (bfd_vma) -1
4823 || plt == NULL
4824 || got == NULL
4825 || gotplt == NULL)
4826 abort ();
4827
4828 /* Fill in the entry in the GOT procedure linkage table. */
4829 if (! info->shared)
252b5132 4830 {
dd7e64d4
L		 4831 got_plt_entry = elf_i386_got_plt_entry;
4832 got_offset += got->output_section->vma + got->output_offset;
252b5132 4833 }
dd7e64d4
L		 4834 else
4835 {
4836 got_plt_entry = elf_i386_pic_got_plt_entry;
4837 got_offset += (got->output_section->vma
4838 + got->output_offset
4839 - gotplt->output_section->vma
4840 - gotplt->output_offset);
4841 }
4842
4843 plt_offset = eh->plt_got.offset;
4844 memcpy (plt->contents + plt_offset, got_plt_entry,
4845 sizeof (elf_i386_got_plt_entry));
4846 bfd_put_32 (output_bfd, got_offset,
4847 plt->contents + plt_offset + plt_got_offset);
4848 }
4849
4850 if (!h->def_regular
4851 && (h->plt.offset != (bfd_vma) -1
4852 || eh->plt_got.offset != (bfd_vma) -1))
4853 {
4854 /* Mark the symbol as undefined, rather than as defined in
4855 the .plt section. Leave the value if there were any
4856 relocations where pointer equality matters (this is a clue
4857 for the dynamic linker, to make function pointer
4858 comparisons work between an application and shared
4859 library), otherwise set it to zero. If a function is only
4860 called from a binary, there is no need to slow down
4861 shared libraries because of that. */
4862 sym->st_shndx = SHN_UNDEF;
4863 if (!h->pointer_equality_needed)
4864 sym->st_value = 0;
252b5132
RH		 4865 }
4866
13ae64f3 4867 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4868 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4869 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4870 {
947216bf 4871 Elf_Internal_Rela rel;
252b5132
RH		 4872
4873 /* This symbol has an entry in the global offset table. Set it
4874 up. */
4875
6de2ae4a 4876 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4877 abort ();
252b5132 4878
6de2ae4a
L		 4879 rel.r_offset = (htab->elf.sgot->output_section->vma
4880 + htab->elf.sgot->output_offset
dc810e39 4881 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4882
dd5724d5
AM		 4883 /* If this is a static link, or it is a -Bsymbolic link and the
4884 symbol is defined locally or was forced to be local because
4885 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4886 The entry in the global offset table will already have been
4887 initialized in the relocate_section function. */
710ab287 4888 if (h->def_regular
0018b0a3
L		 4889 && h->type == STT_GNU_IFUNC)
4890 {
710ab287
L		 4891 if (info->shared)
4892 {
4893 /* Generate R_386_GLOB_DAT. */
4894 goto do_glob_dat;
4895 }
4896 else
4897 {
cd2b2c10
L		 4898 asection *plt;
4899
710ab287
L		 4900 if (!h->pointer_equality_needed)
4901 abort ();
4902
4903 /* For non-shared object, we can't use .got.plt, which
4904 contains the real function addres if we need pointer
4905 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4906 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4907 bfd_put_32 (output_bfd,
4908 (plt->output_section->vma
4909 + plt->output_offset + h->plt.offset),
6de2ae4a 4910 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4911 return TRUE;
4912 }
0018b0a3
L		 4913 }
4914 else if (info->shared
4915 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4916 {
6725bdbf 4917 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4918 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4919 }
252b5132
RH		 4920 else
4921 {
dd5724d5 4922 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4923do_glob_dat:
6725bdbf 4924 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4925 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4926 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4927 }
4928
59d6ffb2 4929 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 4930 }
4931
f5385ebf 4932 if (h->needs_copy)
252b5132 4933 {
947216bf 4934 Elf_Internal_Rela rel;
252b5132
RH		 4935
4936 /* This symbol needs a copy reloc. Set it up. */
4937
ffb2e45b
AM		 4938 if (h->dynindx == -1
4939 || (h->root.type != bfd_link_hash_defined
4940 && h->root.type != bfd_link_hash_defweak)
4941 || htab->srelbss == NULL)
4942 abort ();
252b5132
RH		 4943
4944 rel.r_offset = (h->root.u.def.value
4945 + h->root.u.def.section->output_section->vma
4946 + h->root.u.def.section->output_offset);
4947 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 4948 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 4949 }
4950
b34976b6 4951 return TRUE;
252b5132
RH		 4952}
4953
c25bc9fc
L		 4954/* Finish up local dynamic symbol handling. We set the contents of
4955 various dynamic sections here. */
4956
4957static bfd_boolean
4958elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4959{
4960 struct elf_link_hash_entry *h
4961 = (struct elf_link_hash_entry *) *slot;
4962 struct bfd_link_info *info
23209a78 4963 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4964
4965 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4966 h, NULL);
4967}
4968
38701953
AM		 4969/* Used to decide how to sort relocs in an optimal manner for the
4970 dynamic linker, before writing them out. */
4971
4972static enum elf_reloc_type_class
7e612e98
AM		 4973elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4974 const asection *rel_sec ATTRIBUTE_UNUSED,
4975 const Elf_Internal_Rela *rela)
38701953 4976{
55fd94b0 4977 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4978 {
4979 case R_386_RELATIVE:
4980 return reloc_class_relative;
4981 case R_386_JUMP_SLOT:
4982 return reloc_class_plt;
4983 case R_386_COPY:
4984 return reloc_class_copy;
4985 default:
4986 return reloc_class_normal;
4987 }
4988}
4989
252b5132
RH		 4990/* Finish up the dynamic sections. */
4991
b34976b6 4992static bfd_boolean
55fd94b0
AM		 4993elf_i386_finish_dynamic_sections (bfd *output_bfd,
4994 struct bfd_link_info *info)
252b5132 4995{
6725bdbf 4996 struct elf_i386_link_hash_table *htab;
252b5132 4997 bfd *dynobj;
252b5132 4998 asection *sdyn;
25e762b9 4999 const struct elf_i386_backend_data *abed;
252b5132 5000
6725bdbf 5001 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5002 if (htab == NULL)
5003 return FALSE;
5004
ebe50bae 5005 dynobj = htab->elf.dynobj;
3d4d4302 5006 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 5007 abed = get_elf_i386_backend_data (output_bfd);
252b5132 5008
ebe50bae 5009 if (htab->elf.dynamic_sections_created)
252b5132 5010 {
252b5132
RH		 5011 Elf32_External_Dyn *dyncon, *dynconend;
5012
6de2ae4a 5013 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 5014 abort ();
252b5132
RH		 5015
5016 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 5017 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 5018 for (; dyncon < dynconend; dyncon++)
5019 {
5020 Elf_Internal_Dyn dyn;
51b64d56 5021 asection *s;
252b5132
RH		 5022
5023 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5024
5025 switch (dyn.d_tag)
5026 {
5027 default:
25e762b9
RM		 5028 if (abed->is_vxworks
5029 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 5030 break;
0ac8d2ca 5031 continue;
252b5132
RH		 5032
5033 case DT_PLTGOT:
6de2ae4a 5034 s = htab->elf.sgotplt;
8c37241b 5035 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 5036 break;
5037
252b5132 5038 case DT_JMPREL:
6de2ae4a 5039 s = htab->elf.srelplt;
6348e046 5040 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 5041 break;
5042
5043 case DT_PLTRELSZ:
6de2ae4a 5044 s = htab->elf.srelplt;
eea6121a 5045 dyn.d_un.d_val = s->size;
252b5132
RH		 5046 break;
5047
5048 case DT_RELSZ:
5049 /* My reading of the SVR4 ABI indicates that the
5050 procedure linkage table relocs (DT_JMPREL) should be
5051 included in the overall relocs (DT_REL). This is
5052 what Solaris does. However, UnixWare can not handle
5053 that case. Therefore, we override the DT_RELSZ entry
6348e046 5054 here to make it not include the JMPREL relocs. */
6de2ae4a 5055 s = htab->elf.srelplt;
6348e046
AM		 5056 if (s == NULL)
5057 continue;
eea6121a 5058 dyn.d_un.d_val -= s->size;
6348e046
AM		 5059 break;
5060
5061 case DT_REL:
5062 /* We may not be using the standard ELF linker script.
5063 If .rel.plt is the first .rel section, we adjust
5064 DT_REL to not include it. */
6de2ae4a 5065 s = htab->elf.srelplt;
6348e046
AM		 5066 if (s == NULL)
5067 continue;
5068 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
5069 continue;
eea6121a 5070 dyn.d_un.d_ptr += s->size;
252b5132
RH		 5071 break;
5072 }
0ac8d2ca
AM		 5073
5074 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 5075 }
5076
5077 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 5078 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 5079 {
5080 if (info->shared)
eac338cf 5081 {
25e762b9
RM		 5082 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
5083 abed->plt->plt0_entry_size);
5084 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5085 abed->plt0_pad_byte,
5086 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 5087 }
252b5132
RH		 5088 else
5089 {
25e762b9
RM		 5090 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
5091 abed->plt->plt0_entry_size);
5092 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5093 abed->plt0_pad_byte,
5094 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 5095 bfd_put_32 (output_bfd,
6de2ae4a
L		 5096 (htab->elf.sgotplt->output_section->vma
5097 + htab->elf.sgotplt->output_offset
6725bdbf 5098 + 4),
25e762b9
RM		 5099 htab->elf.splt->contents
5100 + abed->plt->plt0_got1_offset);
252b5132 5101 bfd_put_32 (output_bfd,
6de2ae4a
L		 5102 (htab->elf.sgotplt->output_section->vma
5103 + htab->elf.sgotplt->output_offset
6725bdbf 5104 + 8),
25e762b9
RM		 5105 htab->elf.splt->contents
5106 + abed->plt->plt0_got2_offset);
eac338cf 5107
25e762b9 5108 if (abed->is_vxworks)
eac338cf
PB		 5109 {
5110 Elf_Internal_Rela rel;
7325306f 5111
eac338cf
PB		 5112 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
5113 On IA32 we use REL relocations so the addend goes in
5114 the PLT directly. */
6de2ae4a
L		 5115 rel.r_offset = (htab->elf.splt->output_section->vma
5116 + htab->elf.splt->output_offset
25e762b9 5117 + abed->plt->plt0_got1_offset);
7325306f 5118 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5119 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5120 htab->srelplt2->contents);
5121 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 5122 rel.r_offset = (htab->elf.splt->output_section->vma
5123 + htab->elf.splt->output_offset
25e762b9 5124 + abed->plt->plt0_got2_offset);
7325306f 5125 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5126 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5127 htab->srelplt2->contents +
5128 sizeof (Elf32_External_Rel));
5129 }
252b5132
RH		 5130 }
5131
5132 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5133 really seem like the right value. */
6de2ae4a 5134 elf_section_data (htab->elf.splt->output_section)
6725bdbf 5135 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 5136
5137 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 5138 if (abed->is_vxworks && !info->shared)
eac338cf 5139 {
25e762b9
RM		 5140 int num_plts = (htab->elf.splt->size
5141 / abed->plt->plt_entry_size) - 1;
4c9b0de6 5142 unsigned char *p;
eac338cf
PB		 5143
5144 p = htab->srelplt2->contents;
5145 if (info->shared)
5146 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5147 else
5148 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5149
5150 for (; num_plts; num_plts--)
5151 {
5152 Elf_Internal_Rela rel;
5153 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5154 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5155 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5156 p += sizeof (Elf32_External_Rel);
5157
5158 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5159 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 5160 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5161 p += sizeof (Elf32_External_Rel);
5162 }
5163 }
252b5132
RH		 5164 }
5165 }
5166
6de2ae4a 5167 if (htab->elf.sgotplt)
252b5132 5168 {
56d4289c
L		 5169 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5170 {
5171 (*_bfd_error_handler)
5172 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5173 return FALSE;
5174 }
5175
12d0ee4a 5176 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5177 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 5178 {
5179 bfd_put_32 (output_bfd,
55fd94b0 5180 (sdyn == NULL ? 0
12d0ee4a 5181 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 5182 htab->elf.sgotplt->contents);
5183 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5184 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 5185 }
252b5132 5186
6de2ae4a 5187 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5188 }
8c37241b 5189
e41b3a13 5190 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5191 if (htab->plt_eh_frame != NULL
5192 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5193 {
5194 if (htab->elf.splt != NULL
5195 && htab->elf.splt->size != 0
5196 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5197 && htab->elf.splt->output_section != NULL
5198 && htab->plt_eh_frame->output_section != NULL)
5199 {
5200 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5201 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5202 + htab->plt_eh_frame->output_offset
5203 + PLT_FDE_START_OFFSET;
5204 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5205 htab->plt_eh_frame->contents
5206 + PLT_FDE_START_OFFSET);
5207 }
5208 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5209 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5210 {
5211 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5212 htab->plt_eh_frame,
5213 htab->plt_eh_frame->contents))
5214 return FALSE;
5215 }
5216 }
5217
6de2ae4a
L		 5218 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5219 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5220
c25bc9fc
L		 5221 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5222 htab_traverse (htab->loc_hash_table,
5223 elf_i386_finish_local_dynamic_symbol,
5224 info);
5225
b34976b6 5226 return TRUE;
252b5132
RH		 5227}
5228
3972882e 5229/* Return an array of PLT entry symbol values. */
4c45e5c9 5230
3972882e
L		 5231static bfd_vma *
5232elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5233 asection *relplt)
4c45e5c9 5234{
3972882e
L		 5235 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5236 arelent *p;
5237 long count, i;
5238 bfd_vma *plt_sym_val;
144bed8d 5239 bfd_vma plt_offset;
3972882e
L		 5240 bfd_byte *plt_contents;
5241 const struct elf_i386_backend_data *bed
5242 = get_elf_i386_backend_data (abfd);
5243 Elf_Internal_Shdr *hdr;
5244
5245 /* Get the .plt section contents. */
5246 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5247 if (plt_contents == NULL)
5248 return NULL;
5249 if (!bfd_get_section_contents (abfd, (asection *) plt,
5250 plt_contents, 0, plt->size))
5251 {
5252bad_return:
5253 free (plt_contents);
5254 return NULL;
5255 }
144bed8d 5256
3972882e
L		 5257 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5258 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5259 goto bad_return;
144bed8d 5260
3972882e
L		 5261 hdr = &elf_section_data (relplt)->this_hdr;
5262 count = relplt->size / hdr->sh_entsize;
5263
5264 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5265 if (plt_sym_val == NULL)
5266 goto bad_return;
cca5b8b6 5267
35181b3e 5268 for (i = 0; i < count; i++)
3972882e 5269 plt_sym_val[i] = -1;
cca5b8b6 5270
3972882e
L		 5271 plt_offset = bed->plt->plt_entry_size;
5272 p = relplt->relocation;
5273 for (i = 0; i < count; i++, p++)
144bed8d 5274 {
3972882e
L		 5275 long reloc_index;
5276
6f25f223 5277 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
533d0af0 5278 if (p->howto == NULL)
6f25f223 5279 continue;
533d0af0
L		 5280
5281 if (p->howto->type != R_386_JUMP_SLOT
5282 && p->howto->type != R_386_IRELATIVE)
3972882e
L		 5283 continue;
5284
5285 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
5286 + bed->plt->plt_reloc_offset));
5287 reloc_index /= sizeof (Elf32_External_Rel);
5288 if (reloc_index >= count)
5289 abort ();
5290 plt_sym_val[reloc_index] = plt->vma + plt_offset;
144bed8d 5291 plt_offset += bed->plt->plt_entry_size;
fca6ae69
L		 5292
5293 /* PR binutils/18437: Skip extra relocations in the .rel.plt
5294 section. */
5295 if (plt_offset >= plt->size)
5296 break;
144bed8d
L		 5297 }
5298
3972882e
L		 5299 free (plt_contents);
5300
5301 return plt_sym_val;
5302}
5303
5304/* Similar to _bfd_elf_get_synthetic_symtab. */
5305
5306static long
5307elf_i386_get_synthetic_symtab (bfd *abfd,
5308 long symcount,
5309 asymbol **syms,
5310 long dynsymcount,
5311 asymbol **dynsyms,
5312 asymbol **ret)
5313{
5314 asection *plt = bfd_get_section_by_name (abfd, ".plt");
5315 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
5316 dynsymcount, dynsyms, ret,
5317 plt,
5318 elf_i386_get_plt_sym_val);
4c45e5c9
JJ		 5319}
5320
fdc90cb4
JJ		 5321/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5322
5323static bfd_boolean
5324elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5325{
5326 if (h->plt.offset != (bfd_vma) -1
5327 && !h->def_regular
5328 && !h->pointer_equality_needed)
5329 return FALSE;
5330
5331 return _bfd_elf_hash_symbol (h);
5332}
4c45e5c9 5333
d8045f23
NC		 5334/* Hook called by the linker routine which adds symbols from an object
5335 file. */
5336
5337static bfd_boolean
c16153ae 5338elf_i386_add_symbol_hook (bfd * abfd,
f1885d1e 5339 struct bfd_link_info * info,
d8045f23
NC		 5340 Elf_Internal_Sym * sym,
5341 const char ** namep ATTRIBUTE_UNUSED,
5342 flagword * flagsp ATTRIBUTE_UNUSED,
5343 asection ** secp ATTRIBUTE_UNUSED,
5344 bfd_vma * valp ATTRIBUTE_UNUSED)
5345{
13a2df29 5346 if (ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE
f1885d1e
AM		 5347 && (abfd->flags & DYNAMIC) == 0
5348 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
13a2df29
L		 5349 elf_tdata (info->output_bfd)->has_gnu_symbols
5350 |= elf_gnu_symbol_unique;
d8045f23
NC		 5351
5352 return TRUE;
5353}
5354
6d00b590 5355#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 5356#define TARGET_LITTLE_NAME "elf32-i386"
5357#define ELF_ARCH bfd_arch_i386
ae95ffa6 5358#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5359#define ELF_MACHINE_CODE EM_386
5360#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5361
5362#define elf_backend_can_gc_sections 1
51b64d56 5363#define elf_backend_can_refcount 1
252b5132
RH		 5364#define elf_backend_want_got_plt 1
5365#define elf_backend_plt_readonly 1
5366#define elf_backend_want_plt_sym 0
5367#define elf_backend_got_header_size 12
e41b3a13 5368#define elf_backend_plt_alignment 4
f7483970 5369#define elf_backend_extern_protected_data 1
252b5132 5370
8c29f035
AM		 5371/* Support RELA for objdump of prelink objects. */
5372#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5373#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5374
13ae64f3 5375#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5376
dd5724d5
AM		 5377#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5378#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
5379#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5380#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 5381#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5
AM		 5382
5383#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5384#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5385#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5386#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5387#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5388#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5389#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5390#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5391#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5392#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5393#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5394#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5395#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5396#define elf_backend_relocate_section elf_i386_relocate_section
5397#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5398#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5399#define elf_backend_omit_section_dynsym \
5400 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
fdc90cb4 5401#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23 5402#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
dd5724d5 5403
252b5132 5404#include "elf32-target.h"
2bc3c89a
AM		 5405
5406/* FreeBSD support. */
5407
5408#undef TARGET_LITTLE_SYM
6d00b590 5409#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 5410#undef TARGET_LITTLE_NAME
5411#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5412#undef ELF_OSABI
5413#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5414
5415/* The kernel recognizes executables as valid only if they carry a
5416 "FreeBSD" label in the ELF header. So we put this label on all
5417 executables and (for simplicity) also all other object files. */
5418
2bc3c89a 5419static void
d8045f23 5420elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5421{
78245035 5422 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 5423
2bc3c89a 5424#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 5425 {
5426 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5427 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
5428 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
5429 }
caf47ea6 5430#endif
2bc3c89a
AM		 5431}
5432
5433#undef elf_backend_post_process_headers
d8045f23 5434#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5435#undef elf32_bed
5436#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5437
d8045f23
NC		 5438#undef elf_backend_add_symbol_hook
5439
2bc3c89a 5440#include "elf32-target.h"
eac338cf 5441
a6cc6b3b
RO		 5442/* Solaris 2. */
5443
5444#undef TARGET_LITTLE_SYM
6d00b590 5445#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 5446#undef TARGET_LITTLE_NAME
5447#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5448
914082d1
L		 5449#undef elf_backend_post_process_headers
5450
a6cc6b3b
RO		 5451/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5452 objects won't be recognized. */
5453#undef ELF_OSABI
5454
5455#undef elf32_bed
5456#define elf32_bed elf32_i386_sol2_bed
5457
7dc98aea
RO		 5458/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5459 boundary. */
5460#undef elf_backend_static_tls_alignment
5461#define elf_backend_static_tls_alignment 8
5462
a6cc6b3b
RO		 5463/* The Solaris 2 ABI requires a plt symbol on all platforms.
5464
5465 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5466 File, p.63. */
5467#undef elf_backend_want_plt_sym
5468#define elf_backend_want_plt_sym 1
5469
5470#include "elf32-target.h"
5471
bf64a951
L		 5472/* Intel MCU support. */
5473
5474static bfd_boolean
5475elf32_iamcu_elf_object_p (bfd *abfd)
5476{
5477 /* Set the right machine number for an IAMCU elf32 file. */
5478 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
5479 return TRUE;
5480}
5481
5482#undef TARGET_LITTLE_SYM
5483#define TARGET_LITTLE_SYM iamcu_elf32_vec
5484#undef TARGET_LITTLE_NAME
5485#define TARGET_LITTLE_NAME "elf32-iamcu"
5486#undef ELF_ARCH
5487#define ELF_ARCH bfd_arch_iamcu
5488
5489#undef ELF_MACHINE_CODE
5490#define ELF_MACHINE_CODE EM_IAMCU
5491
5492#undef ELF_OSABI
5493
5494#undef elf32_bed
5495#define elf32_bed elf32_iamcu_bed
5496
5497#undef elf_backend_object_p
5498#define elf_backend_object_p elf32_iamcu_elf_object_p
5499
5500#undef elf_backend_static_tls_alignment
5501
5502#undef elf_backend_want_plt_sym
5503#define elf_backend_want_plt_sym 0
5504
5505#include "elf32-target.h"
5506
5507/* Restore defaults. */
5508#undef ELF_ARCH
5509#define ELF_ARCH bfd_arch_i386
5510#undef ELF_MACHINE_CODE
5511#define ELF_MACHINE_CODE EM_386
5512
a27e4371
RM		 5513/* Native Client support. */
5514
5515#undef TARGET_LITTLE_SYM
6d00b590 5516#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 5517#undef TARGET_LITTLE_NAME
5518#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5519#undef elf32_bed
5520#define elf32_bed elf32_i386_nacl_bed
5521
5522#undef ELF_MAXPAGESIZE
5523#define ELF_MAXPAGESIZE 0x10000
5524
5525/* Restore defaults. */
5526#undef ELF_OSABI
5527#undef elf_backend_want_plt_sym
5528#define elf_backend_want_plt_sym 0
5529#undef elf_backend_post_process_headers
a27e4371
RM		 5530#undef elf_backend_static_tls_alignment
5531
5532/* NaCl uses substantially different PLT entries for the same effects. */
5533
5534#undef elf_backend_plt_alignment
5535#define elf_backend_plt_alignment 5
5536#define NACL_PLT_ENTRY_SIZE 64
5537#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5538
5539static const bfd_byte elf_i386_nacl_plt0_entry[] =
5540 {
5541 0xff, 0x35, /* pushl contents of address */
5542 0, 0, 0, 0, /* replaced with address of .got + 4. */
5543 0x8b, 0x0d, /* movl contents of address, %ecx */
5544 0, 0, 0, 0, /* replaced with address of .got + 8. */
5545 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5546 0xff, 0xe1 /* jmp *%ecx */
5547 };
5548
5549static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5550 {
5551 0x8b, 0x0d, /* movl contents of address, %ecx */
5552 0, 0, 0, 0, /* replaced with GOT slot address. */
5553 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5554 0xff, 0xe1, /* jmp *%ecx */
5555
5556 /* Pad to the next 32-byte boundary with nop instructions. */
5557 0x90,
5558 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5559 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5560
5561 /* Lazy GOT entries point here (32-byte aligned). */
5562 0x68, /* pushl immediate */
5563 0, 0, 0, 0, /* replaced with reloc offset. */
5564 0xe9, /* jmp relative */
5565 0, 0, 0, 0, /* replaced with offset to .plt. */
5566
5567 /* Pad to the next 32-byte boundary with nop instructions. */
5568 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5569 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5570 0x90, 0x90
5571 };
5572
5573static const bfd_byte
5574elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5575 {
5576 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5577 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5578 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5579 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5580
5581 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5582 so pad to that size with nop instructions. */
5583 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5584 };
5585
5586static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5587 {
5588 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5589 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5590 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5591 0xff, 0xe1, /* jmp *%ecx */
5592
5593 /* Pad to the next 32-byte boundary with nop instructions. */
5594 0x90,
5595 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5596 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5597
5598 /* Lazy GOT entries point here (32-byte aligned). */
5599 0x68, /* pushl immediate */
5600 0, 0, 0, 0, /* replaced with offset into relocation table. */
5601 0xe9, /* jmp relative */
5602 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5603
5604 /* Pad to the next 32-byte boundary with nop instructions. */
5605 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5606 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5607 0x90, 0x90
5608 };
5609
5610static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5611 {
5612#if (PLT_CIE_LENGTH != 20 \
5613 || PLT_FDE_LENGTH != 36 \
5614 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5615 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5616# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5617#endif
5618 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5619 0, 0, 0, 0, /* CIE ID */
5620 1, /* CIE version */
5621 'z', 'R', 0, /* Augmentation string */
5622 1, /* Code alignment factor */
5623 0x7c, /* Data alignment factor: -4 */
5624 8, /* Return address column */
5625 1, /* Augmentation size */
5626 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5627 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5628 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5629 DW_CFA_nop, DW_CFA_nop,
5630
5631 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5632 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5633 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5634 0, 0, 0, 0, /* .plt size goes here */
5635 0, /* Augmentation size */
5636 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5637 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5638 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5639 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5640 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5641 13, /* Block length */
5642 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5643 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5644 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5645 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5646 DW_CFA_nop, DW_CFA_nop
5647 };
5648
5649static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5650 {
5651 elf_i386_nacl_plt0_entry, /* plt0_entry */
5652 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5653 2, /* plt0_got1_offset */
5654 8, /* plt0_got2_offset */
5655 elf_i386_nacl_plt_entry, /* plt_entry */
5656 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5657 2, /* plt_got_offset */
5658 33, /* plt_reloc_offset */
5659 38, /* plt_plt_offset */
5660 32, /* plt_lazy_offset */
5661 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5662 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5663 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5664 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5665 };
5666
5667static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5668 {
5669 &elf_i386_nacl_plt, /* plt */
5670 0x90, /* plt0_pad_byte: nop insn */
5671 0, /* is_vxworks */
5672 };
5673
64b384e1
RM		 5674static bfd_boolean
5675elf32_i386_nacl_elf_object_p (bfd *abfd)
5676{
5677 /* Set the right machine number for a NaCl i386 ELF32 file. */
5678 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
5679 return TRUE;
5680}
5681
a27e4371
RM		 5682#undef elf_backend_arch_data
5683#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5684
64b384e1
RM		 5685#undef elf_backend_object_p
5686#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 5687#undef elf_backend_modify_segment_map
5688#define elf_backend_modify_segment_map nacl_modify_segment_map
5689#undef elf_backend_modify_program_headers
5690#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5691#undef elf_backend_final_write_processing
5692#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5693
a27e4371
RM		 5694#include "elf32-target.h"
5695
5a68afcf 5696/* Restore defaults. */
64b384e1 5697#undef elf_backend_object_p
5a68afcf
RM		 5698#undef elf_backend_modify_segment_map
5699#undef elf_backend_modify_program_headers
887badb3 5700#undef elf_backend_final_write_processing
5a68afcf 5701
eac338cf
PB		 5702/* VxWorks support. */
5703
5704#undef TARGET_LITTLE_SYM
6d00b590 5705#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 5706#undef TARGET_LITTLE_NAME
5707#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5708#undef ELF_OSABI
a27e4371
RM		 5709#undef elf_backend_plt_alignment
5710#define elf_backend_plt_alignment 4
eac338cf 5711
23209a78
RM		 5712static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5713 {
25e762b9 5714 &elf_i386_plt, /* plt */
23209a78
RM		 5715 0x90, /* plt0_pad_byte */
5716 1, /* is_vxworks */
5717 };
eac338cf 5718
23209a78
RM		 5719#undef elf_backend_arch_data
5720#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5721
13285a1b 5722#undef elf_backend_relocs_compatible
eac338cf
PB		 5723#undef elf_backend_add_symbol_hook
5724#define elf_backend_add_symbol_hook \
5725 elf_vxworks_add_symbol_hook
5726#undef elf_backend_link_output_symbol_hook
5727#define elf_backend_link_output_symbol_hook \
9c72ff84 5728 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5729#undef elf_backend_emit_relocs
5730#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5731#undef elf_backend_final_write_processing
5732#define elf_backend_final_write_processing \
5733 elf_vxworks_final_write_processing
7dc98aea 5734#undef elf_backend_static_tls_alignment
eac338cf
PB		 5735
5736/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5737 define it. */
5738#undef elf_backend_want_plt_sym
5739#define elf_backend_want_plt_sym 1
5740
5741#undef elf32_bed
5742#define elf32_bed elf32_i386_vxworks_bed
5743
5744#include "elf32-target.h"
GDB Binutils - Deliverables
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