projects / deliverable / binutils-gdb.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[ARM] Rework CPU feature selection in the disassembler
[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;
71cb9464 1579 }
252b5132 1580
142411ca
L		 1581 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1582 symtab_hdr, sym_hashes,
1583 &r_type, GOT_UNKNOWN,
23209a78 1584 rel, rel_end, h, r_symndx))
c2e61a4e 1585 return FALSE;
13ae64f3
JJ		 1586
1587 switch (r_type)
252b5132 1588 {
37e55690
JJ		 1589 case R_386_TLS_LDM:
1590 htab->tls_ldm_got.refcount += 1;
1591 goto create_got;
1592
1593 case R_386_PLT32:
1594 /* This symbol requires a procedure linkage table entry. We
1595 actually build the entry in adjust_dynamic_symbol,
1596 because this might be a case of linking PIC code which is
1597 never referenced by a dynamic object, in which case we
1598 don't need to generate a procedure linkage table entry
1599 after all. */
1600
1601 /* If this is a local symbol, we resolve it directly without
1602 creating a procedure linkage table entry. */
1603 if (h == NULL)
1604 continue;
1605
f5385ebf 1606 h->needs_plt = 1;
37e55690
JJ		 1607 h->plt.refcount += 1;
1608 break;
1609
6a3e1bae 1610 case R_386_SIZE32:
06a6a421 1611 size_reloc = TRUE;
6a3e1bae
L		 1612 goto do_size;
1613
13ae64f3 1614 case R_386_TLS_IE_32:
37e55690
JJ		 1615 case R_386_TLS_IE:
1616 case R_386_TLS_GOTIE:
1d85728f 1617 if (!info->executable)
13ae64f3 1618 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1619 /* Fall through */
1620
252b5132 1621 case R_386_GOT32:
13ae64f3 1622 case R_386_TLS_GD:
67a4f2b7
AO		 1623 case R_386_TLS_GOTDESC:
1624 case R_386_TLS_DESC_CALL:
252b5132 1625 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1626 {
1627 int tls_type, old_tls_type;
1628
1629 switch (r_type)
1630 {
1631 default:
1632 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1633 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1634 case R_386_TLS_GOTDESC:
1635 case R_386_TLS_DESC_CALL:
1636 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1637 case R_386_TLS_IE_32:
1638 if (ELF32_R_TYPE (rel->r_info) == r_type)
1639 tls_type = GOT_TLS_IE_NEG;
1640 else
ebcfb3c0
JJ		 1641 /* If this is a GD->IE transition, we may use either of
1642 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1643 tls_type = GOT_TLS_IE;
1644 break;
1645 case R_386_TLS_IE:
1646 case R_386_TLS_GOTIE:
1647 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1648 }
1649
1650 if (h != NULL)
1651 {
1652 h->got.refcount += 1;
1653 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1654 }
1655 else
1656 {
1657 bfd_signed_vma *local_got_refcounts;
1658
1659 /* This is a global offset table entry for a local symbol. */
1660 local_got_refcounts = elf_local_got_refcounts (abfd);
1661 if (local_got_refcounts == NULL)
1662 {
1663 bfd_size_type size;
1664
1665 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1666 size *= (sizeof (bfd_signed_vma)
1667 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1668 local_got_refcounts = (bfd_signed_vma *)
1669 bfd_zalloc (abfd, size);
13ae64f3 1670 if (local_got_refcounts == NULL)
c2e61a4e 1671 return FALSE;
13ae64f3 1672 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1673 elf_i386_local_tlsdesc_gotent (abfd)
1674 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1675 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1676 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1677 }
1678 local_got_refcounts[r_symndx] += 1;
1679 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1680 }
1681
37e55690
JJ		 1682 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1683 tls_type |= old_tls_type;
13ae64f3
JJ		 1684 /* If a TLS symbol is accessed using IE at least once,
1685 there is no point to use dynamic model for it. */
ebcfb3c0 1686 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1687 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1688 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1689 {
67a4f2b7 1690 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1691 tls_type = old_tls_type;
67a4f2b7
AO		 1692 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1693 && GOT_TLS_GD_ANY_P (tls_type))
1694 tls_type |= old_tls_type;
13ae64f3
JJ		 1695 else
1696 {
09a24cbf 1697 if (h)
4c544807
L		 1698 name = h->root.root.string;
1699 else
1700 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1701 NULL);
13ae64f3 1702 (*_bfd_error_handler)
d003868e 1703 (_("%B: `%s' accessed both as normal and "
55fd94b0 1704 "thread local symbol"),
4c544807 1705 abfd, name);
68c4a57e 1706 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1707 return FALSE;
13ae64f3
JJ		 1708 }
1709 }
1710
1711 if (old_tls_type != tls_type)
1712 {
1713 if (h != NULL)
1714 elf_i386_hash_entry (h)->tls_type = tls_type;
1715 else
1716 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1717 }
1718 }
0ac8d2ca
AM		 1719 /* Fall through */
1720
1721 case R_386_GOTOFF:
1722 case R_386_GOTPC:
13ae64f3 1723 create_got:
6de2ae4a 1724 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 1725 {
1726 if (htab->elf.dynobj == NULL)
1727 htab->elf.dynobj = abfd;
6de2ae4a 1728 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1729 return FALSE;
0ac8d2ca 1730 }
37e55690
JJ		 1731 if (r_type != R_386_TLS_IE)
1732 break;
1733 /* Fall through */
252b5132 1734
37e55690
JJ		 1735 case R_386_TLS_LE_32:
1736 case R_386_TLS_LE:
1d85728f 1737 if (info->executable)
37e55690 1738 break;
bffbf940 1739 info->flags |= DF_STATIC_TLS;
b34976b6 1740 /* Fall through */
252b5132
RH		 1741
1742 case R_386_32:
1743 case R_386_PC32:
710ab287 1744 if (h != NULL && info->executable)
6725bdbf 1745 {
12d0ee4a 1746 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1747 need a copy reloc. We can't check reliably at this
1748 stage whether the section is read-only, as input
1749 sections have not yet been mapped to output sections.
1750 Tentatively set the flag for now, and correct in
1751 adjust_dynamic_symbol. */
f5385ebf 1752 h->non_got_ref = 1;
12d0ee4a
AM		 1753
1754 /* We may need a .plt entry if the function this reloc
1755 refers to is in a shared lib. */
51b64d56 1756 h->plt.refcount += 1;
c6585bbb 1757 if (r_type != R_386_PC32)
f5385ebf 1758 h->pointer_equality_needed = 1;
6725bdbf 1759 }
7843f00e 1760
06a6a421 1761 size_reloc = FALSE;
6a3e1bae 1762do_size:
252b5132 1763 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1764 against a global symbol, or a non PC relative reloc
1765 against a local symbol, then we need to copy the reloc
1766 into the shared library. However, if we are linking with
1767 -Bsymbolic, we do not need to copy a reloc against a
1768 global symbol which is defined in an object we are
1769 including in the link (i.e., DEF_REGULAR is set). At
1770 this point we have not seen all the input files, so it is
1771 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1772 later (it is never cleared). In case of a weak definition,
1773 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1774 a shared library. We account for that possibility below by
1f655a09
L		 1775 storing information in the relocs_copied field of the hash
1776 table entry. A similar situation occurs when creating
1777 shared libraries and symbol visibility changes render the
12d0ee4a 1778 symbol local.
56882138 1779
12d0ee4a
AM		 1780 If on the other hand, we are creating an executable, we
1781 may need to keep relocations for symbols satisfied by a
1782 dynamic library if we manage to avoid copy relocs for the
1783 symbol. */
1784 if ((info->shared
1785 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1786 && (r_type != R_386_PC32
12d0ee4a 1787 || (h != NULL
55255dae 1788 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1789 || h->root.type == bfd_link_hash_defweak
f5385ebf 1790 || !h->def_regular))))
a23b6845
AM		 1791 || (ELIMINATE_COPY_RELOCS
1792 && !info->shared
12d0ee4a
AM		 1793 && (sec->flags & SEC_ALLOC) != 0
1794 && h != NULL
12d0ee4a 1795 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1796 || !h->def_regular)))
252b5132 1797 {
e03a8ed8
L		 1798 struct elf_dyn_relocs *p;
1799 struct elf_dyn_relocs **head;
ec338859 1800
12d0ee4a
AM		 1801 /* We must copy these reloc types into the output file.
1802 Create a reloc section in dynobj and make room for
1803 this reloc. */
252b5132
RH		 1804 if (sreloc == NULL)
1805 {
0ac8d2ca
AM		 1806 if (htab->elf.dynobj == NULL)
1807 htab->elf.dynobj = abfd;
1808
83bac4b0
NC		 1809 sreloc = _bfd_elf_make_dynamic_reloc_section
1810 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1811
252b5132 1812 if (sreloc == NULL)
c2e61a4e 1813 return FALSE;
252b5132
RH		 1814 }
1815
0c715baa
AM		 1816 /* If this is a global symbol, we count the number of
1817 relocations we need for this symbol. */
1818 if (h != NULL)
252b5132 1819 {
d5597ebc 1820 head = &eh->dyn_relocs;
0c715baa
AM		 1821 }
1822 else
1823 {
ec338859
AM		 1824 /* Track dynamic relocs needed for local syms too.
1825 We really need local syms available to do this
1826 easily. Oh well. */
87d72d41 1827 void **vpp;
ec338859 1828 asection *s;
87d72d41
AM		 1829
1830 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1831 abfd, r_symndx);
1832 if (isym == NULL)
1833 return FALSE;
1834
1835 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1836 if (s == NULL)
87d72d41 1837 s = sec;
ec338859 1838
e81d3500 1839 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1840 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1841 }
1842
1843 p = *head;
1844 if (p == NULL || p->sec != sec)
1845 {
1846 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1847 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1848 amt);
ec338859 1849 if (p == NULL)
c2e61a4e 1850 return FALSE;
ec338859
AM		 1851 p->next = *head;
1852 *head = p;
1853 p->sec = sec;
1854 p->count = 0;
1855 p->pc_count = 0;
252b5132 1856 }
ec338859
AM		 1857
1858 p->count += 1;
06a6a421
L		 1859 /* Count size relocation as PC-relative relocation. */
1860 if (r_type == R_386_PC32 || size_reloc)
ec338859 1861 p->pc_count += 1;
252b5132 1862 }
252b5132
RH		 1863 break;
1864
1865 /* This relocation describes the C++ object vtable hierarchy.
1866 Reconstruct it for later use during GC. */
1867 case R_386_GNU_VTINHERIT:
d17e0c6e 1868 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1869 return FALSE;
252b5132
RH		 1870 break;
1871
1872 /* This relocation describes which C++ vtable entries are actually
1873 used. Record for later use during GC. */
1874 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1875 BFD_ASSERT (h != NULL);
1876 if (h != NULL
1877 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c2e61a4e 1878 return FALSE;
252b5132
RH		 1879 break;
1880
1881 default:
1882 break;
1883 }
dd7e64d4
L		 1884
1885 if (use_plt_got
1886 && h != NULL
1887 && h->plt.refcount > 0
8ded2ddc
L		 1888 && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
1889 || h->got.refcount > 0)
dd7e64d4
L		 1890 && htab->plt_got == NULL)
1891 {
1892 /* Create the GOT procedure linkage table. */
1893 unsigned int plt_got_align;
1894 const struct elf_backend_data *bed;
1895
1896 bed = get_elf_backend_data (info->output_bfd);
1897 BFD_ASSERT (sizeof (elf_i386_got_plt_entry) == 8
1898 && (sizeof (elf_i386_got_plt_entry)
1899 == sizeof (elf_i386_pic_got_plt_entry)));
1900 plt_got_align = 3;
1901
1902 if (htab->elf.dynobj == NULL)
1903 htab->elf.dynobj = abfd;
1904 htab->plt_got
1905 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
1906 ".plt.got",
1907 (bed->dynamic_sec_flags
1908 | SEC_ALLOC
1909 | SEC_CODE
1910 | SEC_LOAD
1911 | SEC_READONLY));
1912 if (htab->plt_got == NULL
1913 || !bfd_set_section_alignment (htab->elf.dynobj,
1914 htab->plt_got,
1915 plt_got_align))
1916 return FALSE;
1917 }
c1d11331
L		 1918
1919 if (r_type == R_386_GOT32
1920 && (h == NULL || h->type != STT_GNU_IFUNC))
1921 sec->need_convert_mov_to_lea = 1;
252b5132
RH		 1922 }
1923
b34976b6 1924 return TRUE;
252b5132
RH		 1925}
1926
1927/* Return the section that should be marked against GC for a given
1928 relocation. */
1929
1930static asection *
55fd94b0 1931elf_i386_gc_mark_hook (asection *sec,
07adf181 1932 struct bfd_link_info *info,
55fd94b0
AM		 1933 Elf_Internal_Rela *rel,
1934 struct elf_link_hash_entry *h,
1935 Elf_Internal_Sym *sym)
252b5132
RH		 1936{
1937 if (h != NULL)
07adf181
AM		 1938 switch (ELF32_R_TYPE (rel->r_info))
1939 {
1940 case R_386_GNU_VTINHERIT:
1941 case R_386_GNU_VTENTRY:
1942 return NULL;
1943 }
1944
1945 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1946}
1947
1948/* Update the got entry reference counts for the section being removed. */
1949
b34976b6 1950static bfd_boolean
55fd94b0
AM		 1951elf_i386_gc_sweep_hook (bfd *abfd,
1952 struct bfd_link_info *info,
1953 asection *sec,
1954 const Elf_Internal_Rela *relocs)
252b5132 1955{
4dfe6ac6 1956 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 1957 Elf_Internal_Shdr *symtab_hdr;
1958 struct elf_link_hash_entry **sym_hashes;
1959 bfd_signed_vma *local_got_refcounts;
1960 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1961
7dda2462
TG		 1962 if (info->relocatable)
1963 return TRUE;
1964
4dfe6ac6
NC		 1965 htab = elf_i386_hash_table (info);
1966 if (htab == NULL)
1967 return FALSE;
1968
ec338859 1969 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1970
0ffa91dd 1971 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 1972 sym_hashes = elf_sym_hashes (abfd);
1973 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1974
1975 relend = relocs + sec->reloc_count;
1976 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1977 {
1978 unsigned long r_symndx;
1979 unsigned int r_type;
1980 struct elf_link_hash_entry *h = NULL;
37e55690 1981
26e41594
AM		 1982 r_symndx = ELF32_R_SYM (rel->r_info);
1983 if (r_symndx >= symtab_hdr->sh_info)
1984 {
26e41594 1985 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1986 while (h->root.type == bfd_link_hash_indirect
1987 || h->root.type == bfd_link_hash_warning)
1988 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1989 }
bb1cb422
L		 1990 else
1991 {
1992 /* A local symbol. */
1993 Elf_Internal_Sym *isym;
1994
1995 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1996 abfd, r_symndx);
1997
1998 /* Check relocation against local STT_GNU_IFUNC symbol. */
1999 if (isym != NULL
2000 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
2001 {
2002 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
2003 if (h == NULL)
2004 abort ();
2005 }
2006 }
0c715baa 2007
3db2e7dd
L		 2008 if (h)
2009 {
2010 struct elf_i386_link_hash_entry *eh;
2011 struct elf_dyn_relocs **pp;
2012 struct elf_dyn_relocs *p;
2013
2014 eh = (struct elf_i386_link_hash_entry *) h;
2015 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2016 if (p->sec == sec)
2017 {
2018 /* Everything must go for SEC. */
2019 *pp = p->next;
2020 break;
2021 }
2022 }
2023
26e41594 2024 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 2025 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
2026 symtab_hdr, sym_hashes,
2027 &r_type, GOT_UNKNOWN,
23209a78 2028 rel, relend, h, r_symndx))
142411ca
L		 2029 return FALSE;
2030
26e41594
AM		 2031 switch (r_type)
2032 {
2033 case R_386_TLS_LDM:
4dfe6ac6
NC		 2034 if (htab->tls_ldm_got.refcount > 0)
2035 htab->tls_ldm_got.refcount -= 1;
26e41594 2036 break;
0c715baa 2037
26e41594 2038 case R_386_TLS_GD:
67a4f2b7
AO		 2039 case R_386_TLS_GOTDESC:
2040 case R_386_TLS_DESC_CALL:
26e41594
AM		 2041 case R_386_TLS_IE_32:
2042 case R_386_TLS_IE:
2043 case R_386_TLS_GOTIE:
2044 case R_386_GOT32:
2045 if (h != NULL)
2046 {
2047 if (h->got.refcount > 0)
2048 h->got.refcount -= 1;
bb1cb422
L		 2049 if (h->type == STT_GNU_IFUNC)
2050 {
2051 if (h->plt.refcount > 0)
2052 h->plt.refcount -= 1;
2053 }
26e41594
AM		 2054 }
2055 else if (local_got_refcounts != NULL)
2056 {
2057 if (local_got_refcounts[r_symndx] > 0)
2058 local_got_refcounts[r_symndx] -= 1;
2059 }
2060 break;
0c715baa 2061
26e41594
AM		 2062 case R_386_32:
2063 case R_386_PC32:
1788fc08 2064 case R_386_SIZE32:
3db2e7dd
L		 2065 if (info->shared
2066 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM		 2067 break;
2068 /* Fall through */
6725bdbf 2069
26e41594
AM		 2070 case R_386_PLT32:
2071 if (h != NULL)
2072 {
2073 if (h->plt.refcount > 0)
2074 h->plt.refcount -= 1;
2075 }
2076 break;
dd5724d5 2077
bb1cb422
L		 2078 case R_386_GOTOFF:
2079 if (h != NULL && h->type == STT_GNU_IFUNC)
2080 {
2081 if (h->got.refcount > 0)
2082 h->got.refcount -= 1;
2083 if (h->plt.refcount > 0)
2084 h->plt.refcount -= 1;
2085 }
2086 break;
2087
26e41594
AM		 2088 default:
2089 break;
2090 }
2091 }
252b5132 2092
b34976b6 2093 return TRUE;
252b5132
RH		 2094}
2095
2096/* Adjust a symbol defined by a dynamic object and referenced by a
2097 regular object. The current definition is in some section of the
2098 dynamic object, but we're not including those sections. We have to
2099 change the definition to something the rest of the link can
2100 understand. */
2101
b34976b6 2102static bfd_boolean
55fd94b0
AM		 2103elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2104 struct elf_link_hash_entry *h)
252b5132 2105{
6725bdbf 2106 struct elf_i386_link_hash_table *htab;
252b5132 2107 asection *s;
5ca5bb35
L		 2108 struct elf_i386_link_hash_entry *eh;
2109 struct elf_dyn_relocs *p;
252b5132 2110
cbe950e9
L		 2111 /* STT_GNU_IFUNC symbol must go through PLT. */
2112 if (h->type == STT_GNU_IFUNC)
2113 {
73bcf233
L		 2114 /* All local STT_GNU_IFUNC references must be treate as local
2115 calls via local PLT. */
5ca5bb35
L		 2116 if (h->ref_regular
2117 && SYMBOL_CALLS_LOCAL (info, h))
2118 {
73bcf233 2119 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2120 struct elf_dyn_relocs **pp;
2121
2122 eh = (struct elf_i386_link_hash_entry *) h;
2123 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2124 {
2125 pc_count += p->pc_count;
2126 p->count -= p->pc_count;
2127 p->pc_count = 0;
73bcf233 2128 count += p->count;
5ca5bb35
L		 2129 if (p->count == 0)
2130 *pp = p->next;
2131 else
2132 pp = &p->next;
2133 }
2134
73bcf233 2135 if (pc_count || count)
5ca5bb35
L		 2136 {
2137 h->needs_plt = 1;
5ca5bb35 2138 h->non_got_ref = 1;
a5479e5f
L		 2139 if (h->plt.refcount <= 0)
2140 h->plt.refcount = 1;
2141 else
2142 h->plt.refcount += 1;
5ca5bb35
L		 2143 }
2144 }
2145
cbe950e9
L		 2146 if (h->plt.refcount <= 0)
2147 {
2148 h->plt.offset = (bfd_vma) -1;
2149 h->needs_plt = 0;
2150 }
2151 return TRUE;
2152 }
2153
252b5132
RH		 2154 /* If this is a function, put it in the procedure linkage table. We
2155 will fill in the contents of the procedure linkage table later,
2156 when we know the address of the .got section. */
2157 if (h->type == STT_FUNC
f5385ebf 2158 || h->needs_plt)
252b5132 2159 {
6725bdbf 2160 if (h->plt.refcount <= 0
9c7a29a3
AM		 2161 || SYMBOL_CALLS_LOCAL (info, h)
2162 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2163 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2164 {
2165 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2166 file, but the symbol was never referred to by a dynamic
2167 object, or if all references were garbage collected. In
2168 such a case, we don't actually need to build a procedure
2169 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2170 h->plt.offset = (bfd_vma) -1;
f5385ebf 2171 h->needs_plt = 0;
252b5132
RH		 2172 }
2173
b34976b6 2174 return TRUE;
252b5132 2175 }
6725bdbf
AM		 2176 else
2177 /* It's possible that we incorrectly decided a .plt reloc was
2178 needed for an R_386_PC32 reloc to a non-function sym in
2179 check_relocs. We can't decide accurately between function and
2180 non-function syms in check-relocs; Objects loaded later in
2181 the link may change h->type. So fix it now. */
bbd7ec4a 2182 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2183
2184 /* If this is a weak symbol, and there is a real definition, the
2185 processor independent code will have arranged for us to see the
2186 real definition first, and we can just use the same value. */
f6e332e6 2187 if (h->u.weakdef != NULL)
252b5132 2188 {
f6e332e6
AM		 2189 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2190 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2191 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2192 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2193 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2194 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2195 return TRUE;
252b5132
RH		 2196 }
2197
2198 /* This is a reference to a symbol defined by a dynamic object which
2199 is not a function. */
2200
2201 /* If we are creating a shared library, we must presume that the
2202 only references to the symbol are via the global offset table.
2203 For such cases we need not do anything here; the relocations will
2204 be handled correctly by relocate_section. */
d5597ebc 2205 if (!info->executable)
b34976b6 2206 return TRUE;
252b5132 2207
7843f00e 2208 /* If there are no references to this symbol that do not use the
d5597ebc
L		 2209 GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
2210 reloc. */
2211 eh = (struct elf_i386_link_hash_entry *) h;
2212 if (!h->non_got_ref && !eh->gotoff_ref)
b34976b6 2213 return TRUE;
7843f00e 2214
8bd621d8
AM		 2215 /* If -z nocopyreloc was given, we won't generate them either. */
2216 if (info->nocopyreloc)
2217 {
f5385ebf 2218 h->non_got_ref = 0;
b34976b6 2219 return TRUE;
8bd621d8
AM		 2220 }
2221
643796e3 2222 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2223 if (htab == NULL)
2224 return FALSE;
643796e3 2225
d5597ebc
L		 2226 /* If there aren't any dynamic relocs in read-only sections nor
2227 R_386_GOTOFF relocation, then we can keep the dynamic relocs and
2228 avoid the copy reloc. This doesn't work on VxWorks, where we can
2229 not have dynamic relocations (other than copy and jump slot
2230 relocations) in an executable. */
23209a78 2231 if (ELIMINATE_COPY_RELOCS
d5597ebc 2232 && !eh->gotoff_ref
23209a78 2233 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2234 {
a23b6845
AM		 2235 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2236 {
2237 s = p->sec->output_section;
2238 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2239 break;
2240 }
2241
a23b6845
AM		 2242 if (p == NULL)
2243 {
f5385ebf 2244 h->non_got_ref = 0;
a23b6845
AM		 2245 return TRUE;
2246 }
ebe50bae
AM		 2247 }
2248
252b5132
RH		 2249 /* We must allocate the symbol in our .dynbss section, which will
2250 become part of the .bss section of the executable. There will be
2251 an entry for this symbol in the .dynsym section. The dynamic
2252 object will contain position independent code, so all references
2253 from the dynamic object to this symbol will go through the global
2254 offset table. The dynamic linker will use the .dynsym entry to
2255 determine the address it must put in the global offset table, so
2256 both the dynamic object and the regular object will refer to the
2257 same memory location for the variable. */
2258
252b5132
RH		 2259 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2260 copy the initial value out of the dynamic object and into the
0ac8d2ca 2261 runtime process image. */
1d7e9d18 2262 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2263 {
eea6121a 2264 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2265 h->needs_copy = 1;
252b5132
RH		 2266 }
2267
0ac8d2ca 2268 s = htab->sdynbss;
252b5132 2269
6cabe1ea 2270 return _bfd_elf_adjust_dynamic_copy (info, h, s);
252b5132
RH		 2271}
2272
6725bdbf 2273/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2274 dynamic relocs. */
6725bdbf 2275
b34976b6 2276static bfd_boolean
eb4ff4d6 2277elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2278{
2279 struct bfd_link_info *info;
2280 struct elf_i386_link_hash_table *htab;
5a15f56f 2281 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2282 struct elf_dyn_relocs *p;
25e762b9 2283 unsigned plt_entry_size;
6725bdbf 2284
e92d460e 2285 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2286 return TRUE;
6725bdbf 2287
cbe950e9 2288 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2289
6725bdbf
AM		 2290 info = (struct bfd_link_info *) inf;
2291 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2292 if (htab == NULL)
2293 return FALSE;
6725bdbf 2294
25e762b9
RM		 2295 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2296
dd7e64d4
L		 2297 /* We can't use the GOT PLT if pointer equality is needed since
2298 finish_dynamic_symbol won't clear symbol value and the dynamic
2299 linker won't update the GOT slot. We will get into an infinite
2300 loop at run-time. */
2301 if (htab->plt_got != NULL
2302 && h->type != STT_GNU_IFUNC
2303 && !h->pointer_equality_needed
2304 && h->plt.refcount > 0
2305 && h->got.refcount > 0)
2306 {
2307 /* Don't use the regular PLT if there are both GOT and GOTPLT
2308 reloctions. */
2309 h->plt.offset = (bfd_vma) -1;
2310
2311 /* Use the GOT PLT. */
2312 eh->plt_got.refcount = 1;
2313 }
2314
cbe950e9
L		 2315 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2316 here if it is defined and referenced in a non-shared object. */
2317 if (h->type == STT_GNU_IFUNC
2318 && h->def_regular)
25e762b9 2319 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
7b70956d
WN		 2320 plt_entry_size,
2321 plt_entry_size, 4);
cbe950e9 2322 else if (htab->elf.dynamic_sections_created
dd7e64d4 2323 && (h->plt.refcount > 0 || eh->plt_got.refcount > 0))
6725bdbf 2324 {
25070364
L		 2325 bfd_boolean use_plt_got;
2326
8ded2ddc 2327 if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
25070364
L		 2328 {
2329 /* Don't use the regular PLT for DF_BIND_NOW. */
2330 h->plt.offset = (bfd_vma) -1;
2331
2332 /* Use the GOT PLT. */
2333 h->got.refcount = 1;
2334 eh->plt_got.refcount = 1;
2335 }
2336
2337 use_plt_got = eh->plt_got.refcount > 0;
dd7e64d4 2338
5a15f56f
AM		 2339 /* Make sure this symbol is output as a dynamic symbol.
2340 Undefined weak syms won't yet be marked as dynamic. */
2341 if (h->dynindx == -1
f5385ebf 2342 && !h->forced_local)
5a15f56f 2343 {
c152c796 2344 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2345 return FALSE;
5a15f56f
AM		 2346 }
2347
4e795f50
AM		 2348 if (info->shared
2349 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2350 {
6de2ae4a 2351 asection *s = htab->elf.splt;
dd7e64d4 2352 asection *got_s = htab->plt_got;
6725bdbf 2353
dd7e64d4
L		 2354 if (use_plt_got)
2355 eh->plt_got.offset = got_s->size;
2356 else
a3747075
L		 2357 {
2358 /* If this is the first .plt entry, make room for the
2359 special first entry. */
2360 if (s->size == 0)
2361 s->size = plt_entry_size;
2362 h->plt.offset = s->size;
2363 }
6725bdbf 2364
ced53ee5
AM		 2365 /* If this symbol is not defined in a regular file, and we are
2366 not generating a shared library, then set the symbol to this
2367 location in the .plt. This is required to make function
2368 pointers compare as equal between the normal executable and
2369 the shared library. */
2370 if (! info->shared
f5385ebf 2371 && !h->def_regular)
ced53ee5 2372 {
dd7e64d4
L		 2373 if (use_plt_got)
2374 {
2375 /* We need to make a call to the entry of the GOT PLT
2376 instead of regular PLT entry. */
2377 h->root.u.def.section = got_s;
2378 h->root.u.def.value = eh->plt_got.offset;
2379 }
2380 else
2381 {
2382 h->root.u.def.section = s;
2383 h->root.u.def.value = h->plt.offset;
2384 }
ced53ee5 2385 }
6725bdbf 2386
ced53ee5 2387 /* Make room for this entry. */
dd7e64d4
L		 2388 if (use_plt_got)
2389 got_s->size += sizeof (elf_i386_got_plt_entry);
2390 else
2391 {
2392 s->size += plt_entry_size;
6725bdbf 2393
dd7e64d4
L		 2394 /* We also need to make an entry in the .got.plt section,
2395 which will be placed in the .got section by the linker
2396 script. */
2397 htab->elf.sgotplt->size += 4;
6725bdbf 2398
dd7e64d4
L		 2399 /* We also need to make an entry in the .rel.plt section. */
2400 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2401 htab->elf.srelplt->reloc_count++;
2402 }
eac338cf 2403
23209a78
RM		 2404 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
2405 && !info->shared)
eac338cf
PB		 2406 {
2407 /* VxWorks has a second set of relocations for each PLT entry
2408 in executables. They go in a separate relocation section,
2409 which is processed by the kernel loader. */
2410
2411 /* There are two relocations for the initial PLT entry: an
2412 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2413 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2414
25e762b9 2415 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2416 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2417
2418 /* There are two extra relocations for each subsequent PLT entry:
2419 an R_386_32 relocation for the GOT entry, and an R_386_32
2420 relocation for the PLT entry. */
2421
2422 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2423 }
6725bdbf 2424 }
ced53ee5
AM		 2425 else
2426 {
51b64d56 2427 h->plt.offset = (bfd_vma) -1;
f5385ebf 2428 h->needs_plt = 0;
ced53ee5 2429 }
6725bdbf
AM		 2430 }
2431 else
2432 {
51b64d56 2433 h->plt.offset = (bfd_vma) -1;
f5385ebf 2434 h->needs_plt = 0;
6725bdbf
AM		 2435 }
2436
67a4f2b7
AO		 2437 eh->tlsdesc_got = (bfd_vma) -1;
2438
37e55690 2439 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2440 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2441 if (h->got.refcount > 0
1d85728f 2442 && info->executable
13ae64f3 2443 && h->dynindx == -1
37e55690 2444 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2445 h->got.offset = (bfd_vma) -1;
13ae64f3 2446 else if (h->got.refcount > 0)
6725bdbf 2447 {
0ac8d2ca 2448 asection *s;
b34976b6 2449 bfd_boolean dyn;
13ae64f3 2450 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2451
5a15f56f
AM		 2452 /* Make sure this symbol is output as a dynamic symbol.
2453 Undefined weak syms won't yet be marked as dynamic. */
2454 if (h->dynindx == -1
f5385ebf 2455 && !h->forced_local)
5a15f56f 2456 {
c152c796 2457 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2458 return FALSE;
5a15f56f
AM		 2459 }
2460
6de2ae4a 2461 s = htab->elf.sgot;
67a4f2b7
AO		 2462 if (GOT_TLS_GDESC_P (tls_type))
2463 {
6de2ae4a 2464 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2465 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2466 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2467 h->got.offset = (bfd_vma) -2;
2468 }
2469 if (! GOT_TLS_GDESC_P (tls_type)
2470 || GOT_TLS_GD_P (tls_type))
2471 {
2472 h->got.offset = s->size;
2473 s->size += 4;
2474 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2475 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2476 s->size += 4;
2477 }
ebe50bae 2478 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2479 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2480 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2481 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2482 need two), R_386_TLS_GD needs one if local symbol and two if
2483 global. */
2484 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2485 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2486 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2487 || (tls_type & GOT_TLS_IE))
6de2ae4a 2488 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2489 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2490 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2491 else if (! GOT_TLS_GDESC_P (tls_type)
2492 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2493 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 2494 && (info->shared
2495 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2496 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2497 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2498 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2499 }
2500 else
51b64d56 2501 h->got.offset = (bfd_vma) -1;
6725bdbf 2502
5a15f56f 2503 if (eh->dyn_relocs == NULL)
b34976b6 2504 return TRUE;
5a15f56f 2505
0c715baa
AM		 2506 /* In the shared -Bsymbolic case, discard space allocated for
2507 dynamic pc-relative relocs against symbols which turn out to be
2508 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2509 space for pc-relative relocs that have become local due to symbol
2510 visibility changes. */
0c715baa
AM		 2511
2512 if (info->shared)
5a15f56f 2513 {
09695f56
AM		 2514 /* The only reloc that uses pc_count is R_386_PC32, which will
2515 appear on a call or on something like ".long foo - .". We
2516 want calls to protected symbols to resolve directly to the
2517 function rather than going via the plt. If people want
2518 function pointer comparisons to work as expected then they
2519 should avoid writing assembly like ".long foo - .". */
2520 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2521 {
e03a8ed8 2522 struct elf_dyn_relocs **pp;
0c715baa
AM		 2523
2524 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2525 {
c3ce498c
L		 2526 p->count -= p->pc_count;
2527 p->pc_count = 0;
0c715baa
AM		 2528 if (p->count == 0)
2529 *pp = p->next;
2530 else
2531 pp = &p->next;
2532 }
5a15f56f 2533 }
4e795f50 2534
23209a78 2535 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2536 {
e03a8ed8 2537 struct elf_dyn_relocs **pp;
3348747a
NS		 2538 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2539 {
2540 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2541 *pp = p->next;
2542 else
2543 pp = &p->next;
2544 }
2545 }
2546
4e795f50 2547 /* Also discard relocs on undefined weak syms with non-default
c353e543 2548 visibility. */
22d606e9 2549 if (eh->dyn_relocs != NULL
c353e543 2550 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2551 {
2552 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2553 eh->dyn_relocs = NULL;
2554
2555 /* Make sure undefined weak symbols are output as a dynamic
2556 symbol in PIEs. */
2557 else if (h->dynindx == -1
2558 && !h->forced_local)
2559 {
2560 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2561 return FALSE;
2562 }
2563 }
0c715baa 2564 }
a23b6845 2565 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2566 {
2567 /* For the non-shared case, discard space for relocs against
2568 symbols which turn out to need copy relocs or are not
2569 dynamic. */
2570
f5385ebf
AM		 2571 if (!h->non_got_ref
2572 && ((h->def_dynamic
2573 && !h->def_regular)
ebe50bae 2574 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2575 && (h->root.type == bfd_link_hash_undefweak
2576 || h->root.type == bfd_link_hash_undefined))))
2577 {
2578 /* Make sure this symbol is output as a dynamic symbol.
2579 Undefined weak syms won't yet be marked as dynamic. */
2580 if (h->dynindx == -1
f5385ebf 2581 && !h->forced_local)
0c715baa 2582 {
c152c796 2583 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2584 return FALSE;
0c715baa 2585 }
5a15f56f 2586
0c715baa
AM		 2587 /* If that succeeded, we know we'll be keeping all the
2588 relocs. */
2589 if (h->dynindx != -1)
2590 goto keep;
2591 }
2592
2593 eh->dyn_relocs = NULL;
2594
ec338859 2595 keep: ;
5a15f56f
AM		 2596 }
2597
0c715baa
AM		 2598 /* Finally, allocate space. */
2599 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2600 {
e7c33416
NC		 2601 asection *sreloc;
2602
cbe950e9 2603 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2604
2605 BFD_ASSERT (sreloc != NULL);
eea6121a 2606 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2607 }
2608
b34976b6 2609 return TRUE;
6725bdbf
AM		 2610}
2611
c25bc9fc
L		 2612/* Allocate space in .plt, .got and associated reloc sections for
2613 local dynamic relocs. */
2614
2615static bfd_boolean
2616elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2617{
2618 struct elf_link_hash_entry *h
2619 = (struct elf_link_hash_entry *) *slot;
2620
2621 if (h->type != STT_GNU_IFUNC
2622 || !h->def_regular
2623 || !h->ref_regular
2624 || !h->forced_local
2625 || h->root.type != bfd_link_hash_defined)
2626 abort ();
2627
2628 return elf_i386_allocate_dynrelocs (h, inf);
2629}
2630
0c715baa
AM		 2631/* Find any dynamic relocs that apply to read-only sections. */
2632
b34976b6 2633static bfd_boolean
eb4ff4d6 2634elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2635{
2636 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2637 struct elf_dyn_relocs *p;
0c715baa 2638
aa715242
L		 2639 /* Skip local IFUNC symbols. */
2640 if (h->forced_local && h->type == STT_GNU_IFUNC)
2641 return TRUE;
2642
0c715baa
AM		 2643 eh = (struct elf_i386_link_hash_entry *) h;
2644 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2645 {
2646 asection *s = p->sec->output_section;
2647
2648 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2649 {
2650 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2651
2652 info->flags |= DF_TEXTREL;
2653
1952c5cd
L		 2654 if ((info->warn_shared_textrel && info->shared)
2655 || info->error_textrel)
2656 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L		 2657 p->sec->owner, h->root.root.string,
2658 p->sec);
2659
0c715baa 2660 /* Not an error, just cut short the traversal. */
b34976b6 2661 return FALSE;
0c715baa
AM		 2662 }
2663 }
b34976b6 2664 return TRUE;
0c715baa
AM		 2665}
2666
daa67607
L		 2667/* Convert
2668 mov foo@GOT(%reg), %reg
2669 to
2670 lea foo@GOTOFF(%reg), %reg
2671 with the local symbol, foo. */
2672
2673static bfd_boolean
2674elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
2675 struct bfd_link_info *link_info)
2676{
2677 Elf_Internal_Shdr *symtab_hdr;
2678 Elf_Internal_Rela *internal_relocs;
2679 Elf_Internal_Rela *irel, *irelend;
2680 bfd_byte *contents;
2681 struct elf_i386_link_hash_table *htab;
2682 bfd_boolean changed_contents;
2683 bfd_boolean changed_relocs;
2684 bfd_signed_vma *local_got_refcounts;
2685
2686 /* Don't even try to convert non-ELF outputs. */
2687 if (!is_elf_hash_table (link_info->hash))
2688 return FALSE;
2689
c1d11331 2690 /* Nothing to do if there is no need or no output. */
daa67607 2691 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
c1d11331 2692 || sec->need_convert_mov_to_lea == 0
c8831961 2693 || bfd_is_abs_section (sec->output_section))
daa67607
L		 2694 return TRUE;
2695
2696 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2697
2698 /* Load the relocations for this section. */
2699 internal_relocs = (_bfd_elf_link_read_relocs
2700 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2701 link_info->keep_memory));
2702 if (internal_relocs == NULL)
2703 return FALSE;
2704
2705 htab = elf_i386_hash_table (link_info);
2706 changed_contents = FALSE;
2707 changed_relocs = FALSE;
2708 local_got_refcounts = elf_local_got_refcounts (abfd);
2709
2710 /* Get the section contents. */
2711 if (elf_section_data (sec)->this_hdr.contents != NULL)
2712 contents = elf_section_data (sec)->this_hdr.contents;
2713 else
2714 {
2715 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2716 goto error_return;
2717 }
2718
2719 irelend = internal_relocs + sec->reloc_count;
2720 for (irel = internal_relocs; irel < irelend; irel++)
2721 {
2722 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2723 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2724 unsigned int indx;
2725 struct elf_link_hash_entry *h;
2726
2727 if (r_type != R_386_GOT32)
2728 continue;
2729
2730 /* Get the symbol referred to by the reloc. */
2731 if (r_symndx < symtab_hdr->sh_info)
2732 {
2733 Elf_Internal_Sym *isym;
2734
2735 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2736 abfd, r_symndx);
2737
2738 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2739 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
5697705a 2740 && irel->r_offset >= 2
4b71eec6 2741 && bfd_get_8 (abfd, contents + irel->r_offset - 2) == 0x8b)
daa67607 2742 {
4b71eec6 2743 bfd_put_8 (abfd, 0x8d, contents + irel->r_offset - 2);
daa67607
L		 2744 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2745 if (local_got_refcounts != NULL
2746 && local_got_refcounts[r_symndx] > 0)
2747 local_got_refcounts[r_symndx] -= 1;
2748 changed_contents = TRUE;
2749 changed_relocs = TRUE;
2750 }
2751 continue;
2752 }
2753
2754 indx = r_symndx - symtab_hdr->sh_info;
2755 h = elf_sym_hashes (abfd)[indx];
2756 BFD_ASSERT (h != NULL);
2757
2758 while (h->root.type == bfd_link_hash_indirect
2759 || h->root.type == bfd_link_hash_warning)
2760 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2761
3f65f599
L		 2762 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
2763 optimizing _DYNAMIC since ld.so may use its link-time address. */
daa67607
L		 2764 if (h->def_regular
2765 && h->type != STT_GNU_IFUNC
9637f6ef 2766 && h != htab->elf.hdynamic
daa67607 2767 && SYMBOL_REFERENCES_LOCAL (link_info, h)
5697705a 2768 && irel->r_offset >= 2
4b71eec6 2769 && bfd_get_8 (abfd, contents + irel->r_offset - 2) == 0x8b)
daa67607 2770 {
4b71eec6 2771 bfd_put_8 (abfd, 0x8d, contents + irel->r_offset - 2);
daa67607
L		 2772 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2773 if (h->got.refcount > 0)
2774 h->got.refcount -= 1;
2775 changed_contents = TRUE;
2776 changed_relocs = TRUE;
2777 }
2778 }
2779
2780 if (contents != NULL
2781 && elf_section_data (sec)->this_hdr.contents != contents)
2782 {
2783 if (!changed_contents && !link_info->keep_memory)
2784 free (contents);
2785 else
2786 {
2787 /* Cache the section contents for elf_link_input_bfd. */
2788 elf_section_data (sec)->this_hdr.contents = contents;
2789 }
2790 }
2791
2792 if (elf_section_data (sec)->relocs != internal_relocs)
2793 {
2794 if (!changed_relocs)
2795 free (internal_relocs);
2796 else
2797 elf_section_data (sec)->relocs = internal_relocs;
2798 }
2799
2800 return TRUE;
2801
2802 error_return:
2803 if (contents != NULL
2804 && elf_section_data (sec)->this_hdr.contents != contents)
2805 free (contents);
2806 if (internal_relocs != NULL
2807 && elf_section_data (sec)->relocs != internal_relocs)
2808 free (internal_relocs);
2809 return FALSE;
2810}
2811
252b5132
RH		 2812/* Set the sizes of the dynamic sections. */
2813
b34976b6 2814static bfd_boolean
23209a78 2815elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2816{
6725bdbf 2817 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2818 bfd *dynobj;
2819 asection *s;
b34976b6 2820 bfd_boolean relocs;
0c715baa 2821 bfd *ibfd;
252b5132 2822
6725bdbf 2823 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2824 if (htab == NULL)
2825 return FALSE;
ebe50bae 2826 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2827 if (dynobj == NULL)
2828 abort ();
252b5132 2829
ebe50bae 2830 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2831 {
2832 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2833 if (info->executable)
252b5132 2834 {
3d4d4302 2835 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 2836 if (s == NULL)
2837 abort ();
eea6121a 2838 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2839 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2840 }
161d71a6 2841 }
6725bdbf 2842
0c715baa
AM		 2843 /* Set up .got offsets for local syms, and space for local dynamic
2844 relocs. */
c72f2fb2 2845 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
161d71a6
L		 2846 {
2847 bfd_signed_vma *local_got;
2848 bfd_signed_vma *end_local_got;
13ae64f3 2849 char *local_tls_type;
67a4f2b7 2850 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2851 bfd_size_type locsymcount;
2852 Elf_Internal_Shdr *symtab_hdr;
2853 asection *srel;
6725bdbf 2854
0ffa91dd 2855 if (! is_i386_elf (ibfd))
161d71a6 2856 continue;
6725bdbf 2857
0c715baa
AM		 2858 for (s = ibfd->sections; s != NULL; s = s->next)
2859 {
e03a8ed8 2860 struct elf_dyn_relocs *p;
0c715baa 2861
daa67607
L		 2862 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2863 return FALSE;
2864
e03a8ed8 2865 for (p = ((struct elf_dyn_relocs *)
e81d3500 2866 elf_section_data (s)->local_dynrel);
ec338859
AM		 2867 p != NULL;
2868 p = p->next)
0c715baa 2869 {
ec338859
AM		 2870 if (!bfd_is_abs_section (p->sec)
2871 && bfd_is_abs_section (p->sec->output_section))
2872 {
2873 /* Input section has been discarded, either because
2874 it is a copy of a linkonce section or due to
2875 linker script /DISCARD/, so we'll be discarding
2876 the relocs too. */
2877 }
23209a78 2878 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2879 && strcmp (p->sec->output_section->name,
2880 ".tls_vars") == 0)
2881 {
2882 /* Relocations in vxworks .tls_vars sections are
2883 handled specially by the loader. */
2884 }
248866a8 2885 else if (p->count != 0)
ec338859
AM		 2886 {
2887 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2888 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2889 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2890 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2891 {
2892 info->flags |= DF_TEXTREL;
1952c5cd
L		 2893 if ((info->warn_shared_textrel && info->shared)
2894 || info->error_textrel)
2895 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 2896 p->sec->owner, p->sec);
b70321a2 2897 }
ec338859 2898 }
0c715baa
AM		 2899 }
2900 }
2901
2902 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2903 if (!local_got)
2904 continue;
6725bdbf 2905
0ffa91dd 2906 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2907 locsymcount = symtab_hdr->sh_info;
2908 end_local_got = local_got + locsymcount;
13ae64f3 2909 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2910 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2911 s = htab->elf.sgot;
2912 srel = htab->elf.srelgot;
67a4f2b7
AO		 2913 for (; local_got < end_local_got;
2914 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2915 {
67a4f2b7 2916 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2917 if (*local_got > 0)
6725bdbf 2918 {
67a4f2b7
AO		 2919 if (GOT_TLS_GDESC_P (*local_tls_type))
2920 {
6de2ae4a 2921 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2922 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2923 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2924 *local_got = (bfd_vma) -2;
2925 }
2926 if (! GOT_TLS_GDESC_P (*local_tls_type)
2927 || GOT_TLS_GD_P (*local_tls_type))
2928 {
2929 *local_got = s->size;
2930 s->size += 4;
2931 if (GOT_TLS_GD_P (*local_tls_type)
2932 || *local_tls_type == GOT_TLS_IE_BOTH)
2933 s->size += 4;
2934 }
13ae64f3 2935 if (info->shared
67a4f2b7 2936 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2937 || (*local_tls_type & GOT_TLS_IE))
2938 {
2939 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2940 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2941 else if (GOT_TLS_GD_P (*local_tls_type)
2942 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2943 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2944 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2945 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2946 }
6725bdbf 2947 }
161d71a6
L		 2948 else
2949 *local_got = (bfd_vma) -1;
6725bdbf 2950 }
252b5132 2951 }
6725bdbf 2952
13ae64f3
JJ		 2953 if (htab->tls_ldm_got.refcount > 0)
2954 {
2955 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2956 relocs. */
6de2ae4a
L		 2957 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2958 htab->elf.sgot->size += 8;
2959 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2960 }
2961 else
2962 htab->tls_ldm_got.offset = -1;
2963
0c715baa
AM		 2964 /* Allocate global sym .plt and .got entries, and space for global
2965 sym dynamic relocs. */
eb4ff4d6 2966 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2967
c25bc9fc
L		 2968 /* Allocate .plt and .got entries, and space for local symbols. */
2969 htab_traverse (htab->loc_hash_table,
2970 elf_i386_allocate_local_dynrelocs,
2971 info);
2972
67a4f2b7
AO		 2973 /* For every jump slot reserved in the sgotplt, reloc_count is
2974 incremented. However, when we reserve space for TLS descriptors,
2975 it's not incremented, so in order to compute the space reserved
2976 for them, it suffices to multiply the reloc count by the jump
e1f98742 2977 slot size.
caa0075c 2978
e1f98742
L		 2979 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2980 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2981 if (htab->elf.srelplt)
e1f98742
L		 2982 {
2983 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2984 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2985 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2986 }
2987 else if (htab->elf.irelplt)
2988 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2989
67a4f2b7 2990
a7b16ceb
L		 2991 if (htab->elf.sgotplt)
2992 {
2993 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2994 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 2995 if ((htab->elf.hgot == NULL
2996 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 2997 && (htab->elf.sgotplt->size
2998 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2999 && (htab->elf.splt == NULL
3000 || htab->elf.splt->size == 0)
3001 && (htab->elf.sgot == NULL
3002 || htab->elf.sgot->size == 0)
3003 && (htab->elf.iplt == NULL
3004 || htab->elf.iplt->size == 0)
3005 && (htab->elf.igotplt == NULL
3006 || htab->elf.igotplt->size == 0))
3007 htab->elf.sgotplt->size = 0;
3008 }
3009
9a2a56cc
AM		 3010
3011 if (htab->plt_eh_frame != NULL
3012 && htab->elf.splt != NULL
3013 && htab->elf.splt->size != 0
3014 && !bfd_is_abs_section (htab->elf.splt->output_section)
3015 && _bfd_elf_eh_frame_present (info))
3016 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
3017
5a15f56f
AM		 3018 /* We now have determined the sizes of the various dynamic sections.
3019 Allocate memory for them. */
b34976b6 3020 relocs = FALSE;
252b5132
RH		 3021 for (s = dynobj->sections; s != NULL; s = s->next)
3022 {
eac338cf
PB		 3023 bfd_boolean strip_section = TRUE;
3024
252b5132
RH		 3025 if ((s->flags & SEC_LINKER_CREATED) == 0)
3026 continue;
3027
6de2ae4a 3028 if (s == htab->elf.splt
9a2a56cc 3029 || s == htab->elf.sgot)
252b5132 3030 {
6725bdbf
AM		 3031 /* Strip this section if we don't need it; see the
3032 comment below. */
eac338cf
PB		 3033 /* We'd like to strip these sections if they aren't needed, but if
3034 we've exported dynamic symbols from them we must leave them.
3035 It's too late to tell BFD to get rid of the symbols. */
3036
7325306f 3037 if (htab->elf.hplt != NULL)
eac338cf 3038 strip_section = FALSE;
252b5132 3039 }
9a2a56cc
AM		 3040 else if (s == htab->elf.sgotplt
3041 || s == htab->elf.iplt
3042 || s == htab->elf.igotplt
dd7e64d4 3043 || s == htab->plt_got
9a2a56cc
AM		 3044 || s == htab->plt_eh_frame
3045 || s == htab->sdynbss)
3046 {
3047 /* Strip these too. */
3048 }
0112cd26 3049 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 3050 {
6de2ae4a
L		 3051 if (s->size != 0
3052 && s != htab->elf.srelplt
3053 && s != htab->srelplt2)
b34976b6 3054 relocs = TRUE;
252b5132 3055
0ac8d2ca
AM		 3056 /* We use the reloc_count field as a counter if we need
3057 to copy relocs into the output file. */
5ae0bfb6 3058 s->reloc_count = 0;
252b5132 3059 }
6725bdbf 3060 else
252b5132
RH		 3061 {
3062 /* It's not one of our sections, so don't allocate space. */
3063 continue;
3064 }
3065
c456f082 3066 if (s->size == 0)
252b5132 3067 {
0ac8d2ca
AM		 3068 /* If we don't need this section, strip it from the
3069 output file. This is mostly to handle .rel.bss and
3070 .rel.plt. We must create both sections in
3071 create_dynamic_sections, because they must be created
3072 before the linker maps input sections to output
3073 sections. The linker does that before
3074 adjust_dynamic_symbol is called, and it is that
3075 function which decides whether anything needs to go
3076 into these sections. */
c456f082
AM		 3077 if (strip_section)
3078 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3079 continue;
3080 }
3081
c456f082
AM		 3082 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3083 continue;
3084
f69da49f
AM		 3085 /* Allocate memory for the section contents. We use bfd_zalloc
3086 here in case unused entries are not reclaimed before the
3087 section's contents are written out. This should not happen,
3088 but this way if it does, we get a R_386_NONE reloc instead
3089 of garbage. */
a50b1753 3090 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 3091 if (s->contents == NULL)
b34976b6 3092 return FALSE;
252b5132
RH		 3093 }
3094
e41b3a13 3095 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3096 && htab->plt_eh_frame->contents != NULL)
3097 {
3098 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
3099 sizeof (elf_i386_eh_frame_plt));
3100 bfd_put_32 (dynobj, htab->elf.splt->size,
3101 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3102 }
e41b3a13 3103
ebe50bae 3104 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3105 {
3106 /* Add some entries to the .dynamic section. We fill in the
3107 values later, in elf_i386_finish_dynamic_sections, but we
3108 must add the entries now so that we get the correct size for
3109 the .dynamic section. The DT_DEBUG entry is filled in by the
3110 dynamic linker and used by the debugger. */
dc810e39 3111#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3112 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3113
36af4a4e 3114 if (info->executable)
252b5132 3115 {
dc810e39 3116 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3117 return FALSE;
252b5132
RH		 3118 }
3119
6de2ae4a 3120 if (htab->elf.splt->size != 0)
252b5132 3121 {
dc810e39
AM		 3122 if (!add_dynamic_entry (DT_PLTGOT, 0)
3123 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3124 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3125 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3126 return FALSE;
252b5132
RH		 3127 }
3128
3129 if (relocs)
3130 {
dc810e39
AM		 3131 if (!add_dynamic_entry (DT_REL, 0)
3132 || !add_dynamic_entry (DT_RELSZ, 0)
3133 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3134 return FALSE;
252b5132 3135
0c715baa
AM		 3136 /* If any dynamic relocs apply to a read-only section,
3137 then we need a DT_TEXTREL entry. */
248866a8 3138 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3139 elf_link_hash_traverse (&htab->elf,
3140 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3141
3142 if ((info->flags & DF_TEXTREL) != 0)
3143 {
3144 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3145 return FALSE;
0c715baa 3146 }
252b5132 3147 }
23209a78 3148 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3149 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3150 return FALSE;
252b5132 3151 }
dc810e39 3152#undef add_dynamic_entry
252b5132 3153
b34976b6 3154 return TRUE;
252b5132
RH		 3155}
3156
67a4f2b7
AO		 3157static bfd_boolean
3158elf_i386_always_size_sections (bfd *output_bfd,
3159 struct bfd_link_info *info)
3160{
3161 asection *tls_sec = elf_hash_table (info)->tls_sec;
3162
3163 if (tls_sec)
3164 {
3165 struct elf_link_hash_entry *tlsbase;
3166
3167 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3168 "_TLS_MODULE_BASE_",
3169 FALSE, FALSE, FALSE);
3170
3171 if (tlsbase && tlsbase->type == STT_TLS)
3172 {
4dfe6ac6 3173 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3174 struct bfd_link_hash_entry *bh = NULL;
3175 const struct elf_backend_data *bed
3176 = get_elf_backend_data (output_bfd);
3177
4dfe6ac6
NC		 3178 htab = elf_i386_hash_table (info);
3179 if (htab == NULL)
3180 return FALSE;
3181
67a4f2b7
AO		 3182 if (!(_bfd_generic_link_add_one_symbol
3183 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3184 tls_sec, 0, NULL, FALSE,
3185 bed->collect, &bh)))
3186 return FALSE;
9f03412a 3187
4dfe6ac6 3188 htab->tls_module_base = bh;
9f03412a 3189
67a4f2b7
AO		 3190 tlsbase = (struct elf_link_hash_entry *)bh;
3191 tlsbase->def_regular = 1;
3192 tlsbase->other = STV_HIDDEN;
576fa883 3193 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3194 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3195 }
3196 }
3197
3198 return TRUE;
3199}
3200
38701953
AM		 3201/* Set the correct type for an x86 ELF section. We do this by the
3202 section name, which is a hack, but ought to work. */
3203
b34976b6 3204static bfd_boolean
55fd94b0
AM		 3205elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3206 Elf_Internal_Shdr *hdr,
3207 asection *sec)
38701953 3208{
91d6fa6a 3209 const char *name;
38701953
AM		 3210
3211 name = bfd_get_section_name (abfd, sec);
3212
3213 /* This is an ugly, but unfortunately necessary hack that is
3214 needed when producing EFI binaries on x86. It tells
3215 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3216 containing ELF relocation info. We need this hack in order to
3217 be able to generate ELF binaries that can be translated into
3218 EFI applications (which are essentially COFF objects). Those
3219 files contain a COFF ".reloc" section inside an ELFNN object,
3220 which would normally cause BFD to segfault because it would
3221 attempt to interpret this section as containing relocation
3222 entries for section "oc". With this hack enabled, ".reloc"
3223 will be treated as a normal data section, which will avoid the
3224 segfault. However, you won't be able to create an ELFNN binary
3225 with a section named "oc" that needs relocations, but that's
3226 the kind of ugly side-effects you get when detecting section
3227 types based on their names... In practice, this limitation is
3228 unlikely to bite. */
3229 if (strcmp (name, ".reloc") == 0)
3230 hdr->sh_type = SHT_PROGBITS;
3231
b34976b6 3232 return TRUE;
38701953
AM		 3233}
3234
9f03412a
AO		 3235/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3236 executables. Rather than setting it to the beginning of the TLS
3237 section, we have to set it to the end. This function may be called
3238 multiple times, it is idempotent. */
3239
3240static void
eb4ff4d6 3241elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3242{
4dfe6ac6 3243 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3244 struct bfd_link_hash_entry *base;
3245
3246 if (!info->executable)
3247 return;
3248
4dfe6ac6
NC		 3249 htab = elf_i386_hash_table (info);
3250 if (htab == NULL)
3251 return;
9f03412a 3252
4dfe6ac6
NC		 3253 base = htab->tls_module_base;
3254 if (base == NULL)
9f03412a
AO		 3255 return;
3256
4dfe6ac6 3257 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3258}
3259
13ae64f3
JJ		 3260/* Return the base VMA address which should be subtracted from real addresses
3261 when resolving @dtpoff relocation.
3262 This is PT_TLS segment p_vaddr. */
3263
3264static bfd_vma
eb4ff4d6 3265elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3266{
e1918d23
AM		 3267 /* If tls_sec is NULL, we should have signalled an error already. */
3268 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3269 return 0;
e1918d23 3270 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3271}
3272
3273/* Return the relocation value for @tpoff relocation
3274 if STT_TLS virtual address is ADDRESS. */
3275
3276static bfd_vma
eb4ff4d6 3277elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3278{
e1918d23 3279 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3280 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3281 bfd_vma static_tls_size;
13ae64f3 3282
e1918d23
AM		 3283 /* If tls_sec is NULL, we should have signalled an error already. */
3284 if (htab->tls_sec == NULL)
6a30718d 3285 return 0;
7dc98aea
RO		 3286
3287 /* Consider special static TLS alignment requirements. */
3288 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3289 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3290}
3291
252b5132
RH		 3292/* Relocate an i386 ELF section. */
3293
b34976b6 3294static bfd_boolean
55fd94b0
AM		 3295elf_i386_relocate_section (bfd *output_bfd,
3296 struct bfd_link_info *info,
3297 bfd *input_bfd,
3298 asection *input_section,
3299 bfd_byte *contents,
3300 Elf_Internal_Rela *relocs,
3301 Elf_Internal_Sym *local_syms,
3302 asection **local_sections)
252b5132 3303{
6725bdbf 3304 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3305 Elf_Internal_Shdr *symtab_hdr;
3306 struct elf_link_hash_entry **sym_hashes;
3307 bfd_vma *local_got_offsets;
67a4f2b7 3308 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3309 Elf_Internal_Rela *rel;
3310 Elf_Internal_Rela *relend;
3348747a 3311 bfd_boolean is_vxworks_tls;
25e762b9 3312 unsigned plt_entry_size;
252b5132 3313
0ffa91dd 3314 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3315
6725bdbf 3316 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3317 if (htab == NULL)
3318 return FALSE;
0ffa91dd 3319 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3320 sym_hashes = elf_sym_hashes (input_bfd);
3321 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3322 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3323 /* We have to handle relocations in vxworks .tls_vars sections
3324 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3325 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3326 && info->shared
3348747a
NS		 3327 && !strcmp (input_section->output_section->name,
3328 ".tls_vars"));
252b5132 3329
eb4ff4d6 3330 elf_i386_set_tls_module_base (info);
9f03412a 3331
25e762b9
RM		 3332 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3333
252b5132
RH		 3334 rel = relocs;
3335 relend = relocs + input_section->reloc_count;
3336 for (; rel < relend; rel++)
3337 {
13ae64f3 3338 unsigned int r_type;
252b5132
RH		 3339 reloc_howto_type *howto;
3340 unsigned long r_symndx;
3341 struct elf_link_hash_entry *h;
dd7e64d4 3342 struct elf_i386_link_hash_entry *eh;
252b5132
RH		 3343 Elf_Internal_Sym *sym;
3344 asection *sec;
dd7e64d4 3345 bfd_vma off, offplt, plt_offset;
252b5132 3346 bfd_vma relocation;
b34976b6 3347 bfd_boolean unresolved_reloc;
252b5132 3348 bfd_reloc_status_type r;
1b452ec6 3349 unsigned int indx;
13ae64f3 3350 int tls_type;
1788fc08 3351 bfd_vma st_size;
dd7e64d4 3352 asection *resolved_plt;
252b5132
RH		 3353
3354 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3355 if (r_type == R_386_GNU_VTINHERIT
3356 || r_type == R_386_GNU_VTENTRY)
252b5132 3357 continue;
dc47f327 3358
55fd94b0 3359 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3360 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3361 >= R_386_ext - R_386_standard)
3362 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3363 >= R_386_irelative - R_386_ext))
252b5132 3364 {
6ba842b6 3365 (*_bfd_error_handler)
d003868e
AM		 3366 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3367 input_bfd, input_section, r_type);
252b5132 3368 bfd_set_error (bfd_error_bad_value);
b34976b6 3369 return FALSE;
252b5132 3370 }
1b452ec6 3371 howto = elf_howto_table + indx;
252b5132
RH		 3372
3373 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3374 h = NULL;
3375 sym = NULL;
3376 sec = NULL;
b34976b6 3377 unresolved_reloc = FALSE;
252b5132
RH		 3378 if (r_symndx < symtab_hdr->sh_info)
3379 {
3380 sym = local_syms + r_symndx;
3381 sec = local_sections[r_symndx];
3382 relocation = (sec->output_section->vma
3383 + sec->output_offset
3384 + sym->st_value);
1788fc08 3385 st_size = sym->st_size;
ab96bf03
AM		 3386
3387 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3388 && ((sec->flags & SEC_MERGE) != 0
3389 || (info->relocatable
3390 && sec->output_offset != 0)))
f8df10f4 3391 {
f8df10f4 3392 bfd_vma addend;
4a335f3d 3393 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3394
4a335f3d 3395 switch (howto->size)
f8df10f4 3396 {
4a335f3d
AM		 3397 case 0:
3398 addend = bfd_get_8 (input_bfd, where);
3399 if (howto->pc_relative)
3400 {
3401 addend = (addend ^ 0x80) - 0x80;
3402 addend += 1;
3403 }
3404 break;
3405 case 1:
3406 addend = bfd_get_16 (input_bfd, where);
3407 if (howto->pc_relative)
3408 {
3409 addend = (addend ^ 0x8000) - 0x8000;
3410 addend += 2;
3411 }
3412 break;
3413 case 2:
3414 addend = bfd_get_32 (input_bfd, where);
3415 if (howto->pc_relative)
3416 {
3417 addend = (addend ^ 0x80000000) - 0x80000000;
3418 addend += 4;
3419 }
3420 break;
3421 default:
3422 abort ();
f8df10f4
JJ		 3423 }
3424
ab96bf03
AM		 3425 if (info->relocatable)
3426 addend += sec->output_offset;
3427 else
3428 {
3429 asection *msec = sec;
3430 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3431 addend);
3432 addend -= relocation;
3433 addend += msec->output_section->vma + msec->output_offset;
3434 }
4a335f3d
AM		 3435
3436 switch (howto->size)
3437 {
3438 case 0:
16a10388 3439 /* FIXME: overflow checks. */
4a335f3d
AM		 3440 if (howto->pc_relative)
3441 addend -= 1;
3442 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3443 break;
3444 case 1:
3445 if (howto->pc_relative)
3446 addend -= 2;
3447 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3448 break;
3449 case 2:
3450 if (howto->pc_relative)
3451 addend -= 4;
3452 bfd_put_32 (input_bfd, addend, where);
3453 break;
3454 }
f8df10f4 3455 }
1f85278f
L		 3456 else if (!info->relocatable
3457 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3458 {
3459 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3460 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3461 FALSE);
c25bc9fc
L		 3462 if (h == NULL)
3463 abort ();
3464
23209a78 3465 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3466 h->root.u.def.value = sym->st_value;
3467 h->root.u.def.section = sec;
3468 }
252b5132
RH		 3469 }
3470 else
3471 {
3d540e93 3472 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3473 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3474
b2a8e766
AM		 3475 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3476 r_symndx, symtab_hdr, sym_hashes,
3477 h, sec, relocation,
62d887d4 3478 unresolved_reloc, warned, ignored);
1788fc08 3479 st_size = h->size;
252b5132
RH		 3480 }
3481
dbaa2011 3482 if (sec != NULL && discarded_section (sec))
0672748a 3483 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3484 rel, 1, relend, howto, 0, contents);
9635fe29 3485
ab96bf03
AM		 3486 if (info->relocatable)
3487 continue;
3488
cbe950e9
L		 3489 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3490 it here if it is defined in a non-shared object. */
3491 if (h != NULL
3492 && h->type == STT_GNU_IFUNC
3493 && h->def_regular)
3494 {
3495 asection *plt, *gotplt, *base_got;
3496 bfd_vma plt_index;
4c544807 3497 const char *name;
cbe950e9
L		 3498
3499 if ((input_section->flags & SEC_ALLOC) == 0
3500 || h->plt.offset == (bfd_vma) -1)
3501 abort ();
3502
3503 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3504 if (htab->elf.splt != NULL)
cbe950e9 3505 {
6de2ae4a
L		 3506 plt = htab->elf.splt;
3507 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3508 }
3509 else
3510 {
6de2ae4a
L		 3511 plt = htab->elf.iplt;
3512 gotplt = htab->elf.igotplt;
cbe950e9
L		 3513 }
3514
3515 relocation = (plt->output_section->vma
3516 + plt->output_offset + h->plt.offset);
3517
3518 switch (r_type)
3519 {
3520 default:
4c544807
L		 3521 if (h->root.root.string)
3522 name = h->root.root.string;
3523 else
3524 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3525 NULL);
cbe950e9
L		 3526 (*_bfd_error_handler)
3527 (_("%B: relocation %s against STT_GNU_IFUNC "
3528 "symbol `%s' isn't handled by %s"), input_bfd,
3529 elf_howto_table[r_type].name,
4c544807 3530 name, __FUNCTION__);
cbe950e9
L		 3531 bfd_set_error (bfd_error_bad_value);
3532 return FALSE;
3533
3534 case R_386_32:
710ab287 3535 /* Generate dynamic relcoation only when there is a
c293fa49 3536 non-GOT reference in a shared object. */
710ab287
L		 3537 if (info->shared && h->non_got_ref)
3538 {
3539 Elf_Internal_Rela outrel;
710ab287
L		 3540 asection *sreloc;
3541 bfd_vma offset;
3542
c25bc9fc
L		 3543 /* Need a dynamic relocation to get the real function
3544 adddress. */
710ab287
L		 3545 offset = _bfd_elf_section_offset (output_bfd,
3546 info,
3547 input_section,
3548 rel->r_offset);
3549 if (offset == (bfd_vma) -1
3550 || offset == (bfd_vma) -2)
3551 abort ();
3552
3553 outrel.r_offset = (input_section->output_section->vma
3554 + input_section->output_offset
3555 + offset);
3556
3557 if (h->dynindx == -1
44c4ea11
L		 3558 || h->forced_local
3559 || info->executable)
710ab287
L		 3560 {
3561 /* This symbol is resolved locally. */
56b8aada
L		 3562 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3563 bfd_put_32 (output_bfd,
3564 (h->root.u.def.value
3565 + h->root.u.def.section->output_section->vma
3566 + h->root.u.def.section->output_offset),
3567 contents + offset);
710ab287
L		 3568 }
3569 else
56b8aada 3570 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3571
6de2ae4a 3572 sreloc = htab->elf.irelifunc;
59d6ffb2 3573 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3574
3575 /* If this reloc is against an external symbol, we
3576 do not want to fiddle with the addend. Otherwise,
3577 we need to include the symbol value so that it
3578 becomes an addend for the dynamic reloc. For an
3579 internal symbol, we have updated addend. */
56b8aada 3580 continue;
710ab287 3581 }
d59a60e9 3582 /* FALLTHROUGH */
cbe950e9
L		 3583 case R_386_PC32:
3584 case R_386_PLT32:
3585 goto do_relocation;
3586
3587 case R_386_GOT32:
6de2ae4a 3588 base_got = htab->elf.sgot;
cbe950e9
L		 3589 off = h->got.offset;
3590
7afd84dc 3591 if (base_got == NULL)
cbe950e9
L		 3592 abort ();
3593
7afd84dc 3594 if (off == (bfd_vma) -1)
cbe950e9 3595 {
7afd84dc
L		 3596 /* We can't use h->got.offset here to save state, or
3597 even just remember the offset, as finish_dynamic_symbol
3598 would use that as offset into .got. */
6bbec505 3599
6de2ae4a 3600 if (htab->elf.splt != NULL)
7afd84dc 3601 {
25e762b9 3602 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3603 off = (plt_index + 3) * 4;
6de2ae4a 3604 base_got = htab->elf.sgotplt;
7afd84dc 3605 }
cbe950e9
L		 3606 else
3607 {
25e762b9 3608 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3609 off = plt_index * 4;
6de2ae4a 3610 base_got = htab->elf.igotplt;
7afd84dc
L		 3611 }
3612
3613 if (h->dynindx == -1
3614 || h->forced_local
3615 || info->symbolic)
3616 {
3617 /* This references the local defitionion. We must
3618 initialize this entry in the global offset table.
3619 Since the offset must always be a multiple of 8,
3620 we use the least significant bit to record
3621 whether we have initialized it already.
3622
3623 When doing a dynamic link, we create a .rela.got
3624 relocation entry to initialize the value. This
3625 is done in the finish_dynamic_symbol routine. */
3626 if ((off & 1) != 0)
3627 off &= ~1;
3628 else
3629 {
3630 bfd_put_32 (output_bfd, relocation,
3631 base_got->contents + off);
3632 h->got.offset |= 1;
3633 }
cbe950e9 3634 }
cbe950e9 3635
7afd84dc 3636 relocation = off;
cbe950e9 3637
7afd84dc 3638 /* Adjust for static executables. */
6de2ae4a 3639 if (htab->elf.splt == NULL)
7afd84dc
L		 3640 relocation += gotplt->output_offset;
3641 }
3642 else
0018b0a3
L		 3643 {
3644 relocation = (base_got->output_section->vma
3645 + base_got->output_offset + off
3646 - gotplt->output_section->vma
3647 - gotplt->output_offset);
3648 /* Adjust for static executables. */
6de2ae4a 3649 if (htab->elf.splt == NULL)
0018b0a3
L		 3650 relocation += gotplt->output_offset;
3651 }
3652
cbe950e9
L		 3653 goto do_relocation;
3654
3655 case R_386_GOTOFF:
3656 relocation -= (gotplt->output_section->vma
3657 + gotplt->output_offset);
3658 goto do_relocation;
3659 }
3660 }
3661
252b5132
RH		 3662 switch (r_type)
3663 {
3664 case R_386_GOT32:
3665 /* Relocation is to the entry for this symbol in the global
3666 offset table. */
6de2ae4a 3667 if (htab->elf.sgot == NULL)
ffb2e45b 3668 abort ();
252b5132
RH		 3669
3670 if (h != NULL)
3671 {
b34976b6 3672 bfd_boolean dyn;
252b5132
RH		 3673
3674 off = h->got.offset;
ebe50bae 3675 dyn = htab->elf.dynamic_sections_created;
26e41594 3676 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3677 || (info->shared
586119b3 3678 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3679 || (ELF_ST_VISIBILITY (h->other)
3680 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3681 {
3682 /* This is actually a static link, or it is a
3683 -Bsymbolic link and the symbol is defined
3684 locally, or the symbol was forced to be local
3685 because of a version file. We must initialize
3686 this entry in the global offset table. Since the
3687 offset must always be a multiple of 4, we use the
3688 least significant bit to record whether we have
3689 initialized it already.
3690
3691 When doing a dynamic link, we create a .rel.got
3692 relocation entry to initialize the value. This
3693 is done in the finish_dynamic_symbol routine. */
3694 if ((off & 1) != 0)
3695 off &= ~1;
3696 else
3697 {
3698 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3699 htab->elf.sgot->contents + off);
252b5132
RH		 3700 h->got.offset |= 1;
3701 }
3702 }
8c694914 3703 else
b34976b6 3704 unresolved_reloc = FALSE;
252b5132
RH		 3705 }
3706 else
3707 {
ffb2e45b
AM		 3708 if (local_got_offsets == NULL)
3709 abort ();
252b5132
RH		 3710
3711 off = local_got_offsets[r_symndx];
3712
3713 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3714 the least significant bit to record whether we have
3715 already generated the necessary reloc. */
252b5132
RH		 3716 if ((off & 1) != 0)
3717 off &= ~1;
3718 else
3719 {
6725bdbf 3720 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3721 htab->elf.sgot->contents + off);
252b5132
RH		 3722
3723 if (info->shared)
3724 {
947216bf
AM		 3725 asection *s;
3726 Elf_Internal_Rela outrel;
252b5132 3727
6de2ae4a 3728 s = htab->elf.srelgot;
947216bf 3729 if (s == NULL)
ffb2e45b 3730 abort ();
252b5132 3731
6de2ae4a
L		 3732 outrel.r_offset = (htab->elf.sgot->output_section->vma
3733 + htab->elf.sgot->output_offset
252b5132
RH		 3734 + off);
3735 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 3736 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 3737 }
3738
3739 local_got_offsets[r_symndx] |= 1;
3740 }
252b5132
RH		 3741 }
3742
ffb2e45b
AM		 3743 if (off >= (bfd_vma) -2)
3744 abort ();
3745
6de2ae4a
L		 3746 relocation = htab->elf.sgot->output_section->vma
3747 + htab->elf.sgot->output_offset + off
3748 - htab->elf.sgotplt->output_section->vma
3749 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3750 break;
3751
3752 case R_386_GOTOFF:
3753 /* Relocation is relative to the start of the global offset
3754 table. */
3755
3d949995
L		 3756 /* Check to make sure it isn't a protected function or data
3757 symbol for shared library since it may not be local when
3758 used as function address or with copy relocation. We also
e3c0e327 3759 need to make sure that a symbol is referenced locally. */
d5597ebc 3760 if (!info->executable && h)
90f487df 3761 {
41bed6dd
L		 3762 if (!h->def_regular)
3763 {
3764 const char *v;
3765
3766 switch (ELF_ST_VISIBILITY (h->other))
3767 {
3768 case STV_HIDDEN:
3769 v = _("hidden symbol");
3770 break;
3771 case STV_INTERNAL:
3772 v = _("internal symbol");
3773 break;
3774 case STV_PROTECTED:
3775 v = _("protected symbol");
3776 break;
3777 default:
3778 v = _("symbol");
3779 break;
3780 }
3781
3782 (*_bfd_error_handler)
3783 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3784 input_bfd, v, h->root.root.string);
3785 bfd_set_error (bfd_error_bad_value);
3786 return FALSE;
3787 }
d5597ebc 3788 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
3d949995
L		 3789 && (h->type == STT_FUNC
3790 || h->type == STT_OBJECT)
41bed6dd
L		 3791 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3792 {
3793 (*_bfd_error_handler)
3d949995
L		 3794 (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
3795 input_bfd,
3796 h->type == STT_FUNC ? "function" : "data",
3797 h->root.root.string);
41bed6dd
L		 3798 bfd_set_error (bfd_error_bad_value);
3799 return FALSE;
3800 }
90f487df
L		 3801 }
3802
8c37241b
JJ		 3803 /* Note that sgot is not involved in this
3804 calculation. We always want the start of .got.plt. If we
3805 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3806 permitted by the ABI, we might have to change this
3807 calculation. */
6de2ae4a
L		 3808 relocation -= htab->elf.sgotplt->output_section->vma
3809 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3810 break;
3811
3812 case R_386_GOTPC:
3813 /* Use global offset table as symbol value. */
6de2ae4a
L		 3814 relocation = htab->elf.sgotplt->output_section->vma
3815 + htab->elf.sgotplt->output_offset;
b34976b6 3816 unresolved_reloc = FALSE;
252b5132
RH		 3817 break;
3818
3819 case R_386_PLT32:
3820 /* Relocation is to the entry for this symbol in the
3821 procedure linkage table. */
3822
dd5724d5 3823 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3824 without using the procedure linkage table. */
252b5132
RH		 3825 if (h == NULL)
3826 break;
3827
dd7e64d4
L		 3828 eh = (struct elf_i386_link_hash_entry *) h;
3829 if ((h->plt.offset == (bfd_vma) -1
3830 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 3831 || htab->elf.splt == NULL)
252b5132
RH		 3832 {
3833 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3834 happens when statically linking PIC code, or when
3835 using -Bsymbolic. */
252b5132
RH		 3836 break;
3837 }
3838
dd7e64d4
L		 3839 if (h->plt.offset != (bfd_vma) -1)
3840 {
3841 resolved_plt = htab->elf.splt;
3842 plt_offset = h->plt.offset;
3843 }
3844 else
3845 {
3846 resolved_plt = htab->plt_got;
3847 plt_offset = eh->plt_got.offset;
3848 }
3849
3850 relocation = (resolved_plt->output_section->vma
3851 + resolved_plt->output_offset
3852 + plt_offset);
b34976b6 3853 unresolved_reloc = FALSE;
252b5132
RH		 3854 break;
3855
1788fc08 3856 case R_386_SIZE32:
1788fc08
L		 3857 /* Set to symbol size. */
3858 relocation = st_size;
3859 /* Fall through. */
3860
252b5132
RH		 3861 case R_386_32:
3862 case R_386_PC32:
3348747a
NS		 3863 if ((input_section->flags & SEC_ALLOC) == 0
3864 || is_vxworks_tls)
ec338859
AM		 3865 break;
3866
12d0ee4a 3867 if ((info->shared
ef5aade5
L		 3868 && (h == NULL
3869 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3870 || h->root.type != bfd_link_hash_undefweak)
1788fc08 3871 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3872 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3873 || (ELIMINATE_COPY_RELOCS
3874 && !info->shared
12d0ee4a
AM		 3875 && h != NULL
3876 && h->dynindx != -1
f5385ebf
AM		 3877 && !h->non_got_ref
3878 && ((h->def_dynamic
3879 && !h->def_regular)
28d0b90e 3880 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3881 || h->root.type == bfd_link_hash_undefined)))
252b5132 3882 {
947216bf 3883 Elf_Internal_Rela outrel;
b34976b6 3884 bfd_boolean skip, relocate;
0c715baa 3885 asection *sreloc;
252b5132
RH		 3886
3887 /* When generating a shared object, these relocations
3888 are copied into the output file to be resolved at run
3889 time. */
3890
b34976b6
AM		 3891 skip = FALSE;
3892 relocate = FALSE;
252b5132 3893
c629eae0
JJ		 3894 outrel.r_offset =
3895 _bfd_elf_section_offset (output_bfd, info, input_section,
3896 rel->r_offset);
3897 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3898 skip = TRUE;
0bb2d96a 3899 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3900 skip = TRUE, relocate = TRUE;
252b5132
RH		 3901 outrel.r_offset += (input_section->output_section->vma
3902 + input_section->output_offset);
3903
3904 if (skip)
0bb2d96a 3905 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3906 else if (h != NULL
3907 && h->dynindx != -1
3908 && (r_type == R_386_PC32
3909 || !info->shared
55255dae 3910 || !SYMBOLIC_BIND (info, h)
f5385ebf 3911 || !h->def_regular))
0bb2d96a 3912 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3913 else
3914 {
5a15f56f 3915 /* This symbol is local, or marked to become local. */
b34976b6 3916 relocate = TRUE;
5a15f56f 3917 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3918 }
3919
cbe950e9 3920 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3921
62d78908
L		 3922 if (sreloc == NULL || sreloc->contents == NULL)
3923 {
3924 r = bfd_reloc_notsupported;
3925 goto check_relocation_error;
3926 }
0c715baa 3927
59d6ffb2 3928 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 3929
3930 /* If this reloc is against an external symbol, we do
3931 not want to fiddle with the addend. Otherwise, we
3932 need to include the symbol value so that it becomes
3933 an addend for the dynamic reloc. */
0f88be7a 3934 if (! relocate)
252b5132
RH		 3935 continue;
3936 }
252b5132
RH		 3937 break;
3938
37e55690 3939 case R_386_TLS_IE:
1d85728f 3940 if (!info->executable)
37e55690 3941 {
947216bf 3942 Elf_Internal_Rela outrel;
37e55690 3943 asection *sreloc;
37e55690
JJ		 3944
3945 outrel.r_offset = rel->r_offset
3946 + input_section->output_section->vma
3947 + input_section->output_offset;
3948 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3949 sreloc = elf_section_data (input_section)->sreloc;
3950 if (sreloc == NULL)
3951 abort ();
59d6ffb2 3952 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3953 }
3954 /* Fall through */
3955
13ae64f3 3956 case R_386_TLS_GD:
67a4f2b7
AO		 3957 case R_386_TLS_GOTDESC:
3958 case R_386_TLS_DESC_CALL:
13ae64f3 3959 case R_386_TLS_IE_32:
37e55690 3960 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3961 tls_type = GOT_UNKNOWN;
3962 if (h == NULL && local_got_offsets)
3963 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3964 else if (h != NULL)
142411ca 3965 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3966 if (tls_type == GOT_TLS_IE)
3967 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3968
3969 if (! elf_i386_tls_transition (info, input_bfd,
3970 input_section, contents,
3971 symtab_hdr, sym_hashes,
3972 &r_type, tls_type, rel,
4c544807 3973 relend, h, r_symndx))
142411ca 3974 return FALSE;
13ae64f3
JJ		 3975
3976 if (r_type == R_386_TLS_LE_32)
3977 {
82e51918 3978 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3979 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3980 {
142411ca 3981 unsigned int type;
13ae64f3
JJ		 3982 bfd_vma roff;
3983
3984 /* GD->LE transition. */
13ae64f3 3985 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3986 if (type == 0x04)
3987 {
3988 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3989 Change it into:
3990 movl %gs:0, %eax; subl $foo@tpoff, %eax
3991 (6 byte form of subl). */
13ae64f3
JJ		 3992 memcpy (contents + rel->r_offset - 3,
3993 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3994 roff = rel->r_offset + 5;
13ae64f3
JJ		 3995 }
3996 else
3997 {
142411ca
L		 3998 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3999 Change it into:
4000 movl %gs:0, %eax; subl $foo@tpoff, %eax
4001 (6 byte form of subl). */
4002 memcpy (contents + rel->r_offset - 2,
4003 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
4004 roff = rel->r_offset + 6;
13ae64f3 4005 }
eb4ff4d6 4006 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 4007 contents + roff);
a3fadc9a 4008 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4009 rel++;
4010 continue;
4011 }
67a4f2b7
AO		 4012 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4013 {
4014 /* GDesc -> LE transition.
4015 It's originally something like:
4016 leal x@tlsdesc(%ebx), %eax
4017
4018 leal x@ntpoff, %eax
4019
4020 Registers other than %eax may be set up here. */
4021
142411ca 4022 unsigned int val;
67a4f2b7
AO		 4023 bfd_vma roff;
4024
67a4f2b7 4025 roff = rel->r_offset;
67a4f2b7 4026 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 4027
4028 /* Now modify the instruction as appropriate. */
4029 /* aoliva FIXME: remove the above and xor the byte
4030 below with 0x86. */
4031 bfd_put_8 (output_bfd, val ^ 0x86,
4032 contents + roff - 1);
eb4ff4d6 4033 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 4034 contents + roff);
4035 continue;
4036 }
4037 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4038 {
4039 /* GDesc -> LE transition.
4040 It's originally:
4041 call *(%eax)
4042 Turn it into:
142411ca 4043 xchg %ax,%ax */
67a4f2b7 4044
67a4f2b7 4045 bfd_vma roff;
6bbec505 4046
67a4f2b7 4047 roff = rel->r_offset;
10efb593 4048 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4049 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4050 continue;
4051 }
37e55690 4052 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 4053 {
142411ca 4054 unsigned int val;
13ae64f3
JJ		 4055
4056 /* IE->LE transition:
37e55690
JJ		 4057 Originally it can be one of:
4058 movl foo, %eax
4059 movl foo, %reg
4060 addl foo, %reg
4061 We change it into:
4062 movl $foo, %eax
4063 movl $foo, %reg
4064 addl $foo, %reg. */
37e55690 4065 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 4066 if (val == 0xa1)
4067 {
4068 /* movl foo, %eax. */
55fd94b0
AM		 4069 bfd_put_8 (output_bfd, 0xb8,
4070 contents + rel->r_offset - 1);
37e55690 4071 }
299bf759 4072 else
37e55690 4073 {
142411ca
L		 4074 unsigned int type;
4075
55fd94b0
AM		 4076 type = bfd_get_8 (input_bfd,
4077 contents + rel->r_offset - 2);
299bf759 4078 switch (type)
26e41594 4079 {
299bf759
L		 4080 case 0x8b:
4081 /* movl */
299bf759
L		 4082 bfd_put_8 (output_bfd, 0xc7,
4083 contents + rel->r_offset - 2);
4084 bfd_put_8 (output_bfd,
4085 0xc0 | ((val >> 3) & 7),
4086 contents + rel->r_offset - 1);
4087 break;
4088 case 0x03:
4089 /* addl */
299bf759
L		 4090 bfd_put_8 (output_bfd, 0x81,
4091 contents + rel->r_offset - 2);
4092 bfd_put_8 (output_bfd,
4093 0xc0 | ((val >> 3) & 7),
4094 contents + rel->r_offset - 1);
4095 break;
4096 default:
4097 BFD_FAIL ();
4098 break;
26e41594 4099 }
37e55690 4100 }
eb4ff4d6 4101 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4102 contents + rel->r_offset);
4103 continue;
4104 }
4105 else
4106 {
4107 unsigned int val, type;
4108
4109 /* {IE_32,GOTIE}->LE transition:
4110 Originally it can be one of:
13ae64f3 4111 subl foo(%reg1), %reg2
13ae64f3 4112 movl foo(%reg1), %reg2
37e55690 4113 addl foo(%reg1), %reg2
13ae64f3
JJ		 4114 We change it into:
4115 subl $foo, %reg2
37e55690
JJ		 4116 movl $foo, %reg2 (6 byte form)
4117 addl $foo, %reg2. */
13ae64f3
JJ		 4118 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4119 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4120 if (type == 0x8b)
4121 {
4122 /* movl */
13ae64f3
JJ		 4123 bfd_put_8 (output_bfd, 0xc7,
4124 contents + rel->r_offset - 2);
4125 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4126 contents + rel->r_offset - 1);
4127 }
4128 else if (type == 0x2b)
4129 {
4130 /* subl */
13ae64f3
JJ		 4131 bfd_put_8 (output_bfd, 0x81,
4132 contents + rel->r_offset - 2);
4133 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4134 contents + rel->r_offset - 1);
4135 }
37e55690
JJ		 4136 else if (type == 0x03)
4137 {
4138 /* addl */
4139 bfd_put_8 (output_bfd, 0x81,
4140 contents + rel->r_offset - 2);
4141 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4142 contents + rel->r_offset - 1);
4143 }
13ae64f3
JJ		 4144 else
4145 BFD_FAIL ();
37e55690 4146 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4147 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4148 contents + rel->r_offset);
4149 else
eb4ff4d6 4150 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4151 contents + rel->r_offset);
13ae64f3
JJ		 4152 continue;
4153 }
4154 }
4155
6de2ae4a 4156 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4157 abort ();
4158
4159 if (h != NULL)
67a4f2b7
AO		 4160 {
4161 off = h->got.offset;
4162 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4163 }
13ae64f3
JJ		 4164 else
4165 {
4166 if (local_got_offsets == NULL)
4167 abort ();
4168
4169 off = local_got_offsets[r_symndx];
67a4f2b7 4170 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4171 }
4172
4173 if ((off & 1) != 0)
4174 off &= ~1;
26e41594 4175 else
13ae64f3 4176 {
947216bf 4177 Elf_Internal_Rela outrel;
91d6fa6a 4178 int dr_type;
67a4f2b7 4179 asection *sreloc;
13ae64f3 4180
6de2ae4a 4181 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4182 abort ();
4183
67a4f2b7
AO		 4184 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4185
4186 if (GOT_TLS_GDESC_P (tls_type))
4187 {
59d6ffb2 4188 bfd_byte *loc;
67a4f2b7
AO		 4189 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4190 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4191 <= htab->elf.sgotplt->size);
4192 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4193 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4194 + offplt
4195 + htab->sgotplt_jump_table_size);
6de2ae4a 4196 sreloc = htab->elf.srelplt;
67a4f2b7 4197 loc = sreloc->contents;
5ae0bfb6
RS		 4198 loc += (htab->next_tls_desc_index++
4199 * sizeof (Elf32_External_Rel));
67a4f2b7 4200 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4201 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4202 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4203 if (indx == 0)
4204 {
4205 BFD_ASSERT (! unresolved_reloc);
4206 bfd_put_32 (output_bfd,
eb4ff4d6 4207 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4208 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4209 + htab->sgotplt_jump_table_size + 4);
4210 }
4211 else
4212 {
4213 bfd_put_32 (output_bfd, 0,
6de2ae4a 4214 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4215 + htab->sgotplt_jump_table_size + 4);
4216 }
4217 }
4218
6de2ae4a 4219 sreloc = htab->elf.srelgot;
67a4f2b7 4220
6de2ae4a
L		 4221 outrel.r_offset = (htab->elf.sgot->output_section->vma
4222 + htab->elf.sgot->output_offset + off);
13ae64f3 4223
67a4f2b7 4224 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4225 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4226 else if (GOT_TLS_GDESC_P (tls_type))
4227 goto dr_done;
37e55690
JJ		 4228 else if (tls_type == GOT_TLS_IE_POS)
4229 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4230 else
4231 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4232
37e55690 4233 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4234 bfd_put_32 (output_bfd,
4235 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4236 htab->elf.sgot->contents + off);
37e55690 4237 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4238 bfd_put_32 (output_bfd,
eb4ff4d6 4239 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4240 htab->elf.sgot->contents + off);
67a4f2b7 4241 else if (dr_type != R_386_TLS_DESC)
c366c25e 4242 bfd_put_32 (output_bfd, 0,
6de2ae4a 4243 htab->elf.sgot->contents + off);
13ae64f3 4244 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4245
59d6ffb2 4246 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4247
67a4f2b7 4248 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4249 {
4250 if (indx == 0)
4251 {
82e51918 4252 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4253 bfd_put_32 (output_bfd,
eb4ff4d6 4254 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4255 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4256 }
4257 else
4258 {
4259 bfd_put_32 (output_bfd, 0,
6de2ae4a 4260 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4261 outrel.r_info = ELF32_R_INFO (indx,
4262 R_386_TLS_DTPOFF32);
4263 outrel.r_offset += 4;
59d6ffb2 4264 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4265 }
4266 }
37e55690
JJ		 4267 else if (tls_type == GOT_TLS_IE_BOTH)
4268 {
4269 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4270 (indx == 0
4271 ? relocation - elf_i386_dtpoff_base (info)
4272 : 0),
6de2ae4a 4273 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4274 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4275 outrel.r_offset += 4;
59d6ffb2 4276 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4277 }
13ae64f3 4278
67a4f2b7 4279 dr_done:
13ae64f3
JJ		 4280 if (h != NULL)
4281 h->got.offset |= 1;
4282 else
4283 local_got_offsets[r_symndx] |= 1;
4284 }
4285
67a4f2b7
AO		 4286 if (off >= (bfd_vma) -2
4287 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4288 abort ();
67a4f2b7
AO		 4289 if (r_type == R_386_TLS_GOTDESC
4290 || r_type == R_386_TLS_DESC_CALL)
4291 {
4292 relocation = htab->sgotplt_jump_table_size + offplt;
4293 unresolved_reloc = FALSE;
4294 }
4295 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4296 {
6de2ae4a
L		 4297 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4298 + htab->elf.sgotplt->output_offset;
4299 relocation = htab->elf.sgot->output_section->vma
4300 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4301 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4302 && tls_type == GOT_TLS_IE_BOTH)
4303 relocation += 4;
4304 if (r_type == R_386_TLS_IE)
8c37241b 4305 relocation += g_o_t;
b34976b6 4306 unresolved_reloc = FALSE;
13ae64f3 4307 }
67a4f2b7 4308 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4309 {
4310 unsigned int val, type;
4311 bfd_vma roff;
4312
4313 /* GD->IE transition. */
13ae64f3 4314 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4315 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4316 if (type == 0x04)
4317 {
4318 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4319 Change it into:
4320 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4321 val >>= 3;
142411ca 4322 roff = rel->r_offset - 3;
13ae64f3
JJ		 4323 }
4324 else
4325 {
4326 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4327 Change it into:
4328 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4329 roff = rel->r_offset - 2;
4330 }
4331 memcpy (contents + roff,
4332 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4333 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4334 /* If foo is used only with foo@gotntpoff(%reg) and
4335 foo@indntpoff, but not with foo@gottpoff(%reg), change
4336 subl $foo@gottpoff(%reg), %eax
4337 into:
4338 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4339 if (tls_type == GOT_TLS_IE_POS)
4340 contents[roff + 6] = 0x03;
8c37241b 4341 bfd_put_32 (output_bfd,
6de2ae4a
L		 4342 htab->elf.sgot->output_section->vma
4343 + htab->elf.sgot->output_offset + off
4344 - htab->elf.sgotplt->output_section->vma
4345 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4346 contents + roff + 8);
4347 /* Skip R_386_PLT32. */
4348 rel++;
4349 continue;
4350 }
67a4f2b7
AO		 4351 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4352 {
4353 /* GDesc -> IE transition.
4354 It's originally something like:
4355 leal x@tlsdesc(%ebx), %eax
4356
4357 Change it to:
142411ca 4358 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4359 or:
4360 movl x@gottpoff(%ebx), %eax # before negl %eax
4361
4362 Registers other than %eax may be set up here. */
4363
67a4f2b7
AO		 4364 bfd_vma roff;
4365
4366 /* First, make sure it's a leal adding ebx to a 32-bit
4367 offset into any register, although it's probably
4368 almost always going to be eax. */
4369 roff = rel->r_offset;
67a4f2b7
AO		 4370
4371 /* Now modify the instruction as appropriate. */
4372 /* To turn a leal into a movl in the form we use it, it
4373 suffices to change the first byte from 0x8d to 0x8b.
4374 aoliva FIXME: should we decide to keep the leal, all
4375 we have to do is remove the statement below, and
4376 adjust the relaxation of R_386_TLS_DESC_CALL. */
4377 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4378
4379 if (tls_type == GOT_TLS_IE_BOTH)
4380 off += 4;
4381
4382 bfd_put_32 (output_bfd,
6de2ae4a
L		 4383 htab->elf.sgot->output_section->vma
4384 + htab->elf.sgot->output_offset + off
4385 - htab->elf.sgotplt->output_section->vma
4386 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4387 contents + roff);
4388 continue;
4389 }
4390 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4391 {
4392 /* GDesc -> IE transition.
4393 It's originally:
4394 call *(%eax)
4395
4396 Change it to:
142411ca 4397 xchg %ax,%ax
67a4f2b7
AO		 4398 or
4399 negl %eax
4400 depending on how we transformed the TLS_GOTDESC above.
4401 */
4402
67a4f2b7
AO		 4403 bfd_vma roff;
4404
67a4f2b7 4405 roff = rel->r_offset;
67a4f2b7
AO		 4406
4407 /* Now modify the instruction as appropriate. */
4408 if (tls_type != GOT_TLS_IE_NEG)
4409 {
10efb593
L		 4410 /* xchg %ax,%ax */
4411 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4412 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4413 }
4414 else
4415 {
4416 /* negl %eax */
4417 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4418 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4419 }
4420
4421 continue;
4422 }
4423 else
4424 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4425 break;
4426
4427 case R_386_TLS_LDM:
142411ca
L		 4428 if (! elf_i386_tls_transition (info, input_bfd,
4429 input_section, contents,
4430 symtab_hdr, sym_hashes,
4431 &r_type, GOT_UNKNOWN, rel,
4c544807 4432 relend, h, r_symndx))
142411ca 4433 return FALSE;
13ae64f3 4434
142411ca
L		 4435 if (r_type != R_386_TLS_LDM)
4436 {
13ae64f3 4437 /* LD->LE transition:
13ae64f3
JJ		 4438 leal foo(%reg), %eax; call ___tls_get_addr.
4439 We change it into:
4440 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4441 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4442 memcpy (contents + rel->r_offset - 2,
4443 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4444 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4445 rel++;
4446 continue;
4447 }
4448
6de2ae4a 4449 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4450 abort ();
4451
4452 off = htab->tls_ldm_got.offset;
4453 if (off & 1)
4454 off &= ~1;
4455 else
4456 {
947216bf 4457 Elf_Internal_Rela outrel;
13ae64f3 4458
6de2ae4a 4459 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4460 abort ();
4461
6de2ae4a
L		 4462 outrel.r_offset = (htab->elf.sgot->output_section->vma
4463 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4464
4465 bfd_put_32 (output_bfd, 0,
6de2ae4a 4466 htab->elf.sgot->contents + off);
13ae64f3 4467 bfd_put_32 (output_bfd, 0,
6de2ae4a 4468 htab->elf.sgot->contents + off + 4);
13ae64f3 4469 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4470 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4471 htab->tls_ldm_got.offset |= 1;
4472 }
6de2ae4a
L		 4473 relocation = htab->elf.sgot->output_section->vma
4474 + htab->elf.sgot->output_offset + off
4475 - htab->elf.sgotplt->output_section->vma
4476 - htab->elf.sgotplt->output_offset;
b34976b6 4477 unresolved_reloc = FALSE;
13ae64f3
JJ		 4478 break;
4479
4480 case R_386_TLS_LDO_32:
959b0961 4481 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4482 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4483 else
4484 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4485 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4486 break;
4487
4488 case R_386_TLS_LE_32:
13ae64f3 4489 case R_386_TLS_LE:
1d85728f 4490 if (!info->executable)
37e55690 4491 {
947216bf 4492 Elf_Internal_Rela outrel;
37e55690 4493 asection *sreloc;
37e55690
JJ		 4494
4495 outrel.r_offset = rel->r_offset
4496 + input_section->output_section->vma
4497 + input_section->output_offset;
4498 if (h != NULL && h->dynindx != -1)
4499 indx = h->dynindx;
4500 else
4501 indx = 0;
4502 if (r_type == R_386_TLS_LE_32)
4503 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4504 else
4505 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4506 sreloc = elf_section_data (input_section)->sreloc;
4507 if (sreloc == NULL)
4508 abort ();
59d6ffb2 4509 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4510 if (indx)
4511 continue;
4512 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4513 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4514 else
eb4ff4d6 4515 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4516 }
4517 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4518 relocation = elf_i386_tpoff (info, relocation);
37e55690 4519 else
eb4ff4d6 4520 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4521 break;
4522
252b5132
RH		 4523 default:
4524 break;
4525 }
4526
239e1f3a
AM		 4527 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4528 because such sections are not SEC_ALLOC and thus ld.so will
4529 not process them. */
8c694914 4530 if (unresolved_reloc
239e1f3a 4531 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4532 && h->def_dynamic)
4533 && _bfd_elf_section_offset (output_bfd, info, input_section,
4534 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4535 {
4536 (*_bfd_error_handler)
843fe662 4537 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4538 input_bfd,
4539 input_section,
6a30718d 4540 (long) rel->r_offset,
843fe662 4541 howto->name,
6a30718d 4542 h->root.root.string);
b34976b6 4543 return FALSE;
6a30718d 4544 }
83be169b 4545
cbe950e9 4546do_relocation:
252b5132
RH		 4547 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4548 contents, rel->r_offset,
55fd94b0 4549 relocation, 0);
252b5132 4550
62d78908 4551check_relocation_error:
cf5c0c5b 4552 if (r != bfd_reloc_ok)
252b5132 4553 {
cf5c0c5b 4554 const char *name;
ffb2e45b 4555
cf5c0c5b
AM		 4556 if (h != NULL)
4557 name = h->root.root.string;
4558 else
4559 {
4560 name = bfd_elf_string_from_elf_section (input_bfd,
4561 symtab_hdr->sh_link,
4562 sym->st_name);
4563 if (name == NULL)
b34976b6 4564 return FALSE;
cf5c0c5b
AM		 4565 if (*name == '\0')
4566 name = bfd_section_name (input_bfd, sec);
4567 }
ffb2e45b 4568
cf5c0c5b
AM		 4569 if (r == bfd_reloc_overflow)
4570 {
cf5c0c5b 4571 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4572 (info, (h ? &h->root : NULL), name, howto->name,
4573 (bfd_vma) 0, input_bfd, input_section,
4574 rel->r_offset)))
b34976b6 4575 return FALSE;
cf5c0c5b
AM		 4576 }
4577 else
4578 {
4579 (*_bfd_error_handler)
d003868e
AM		 4580 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4581 input_bfd, input_section,
cf5c0c5b 4582 (long) rel->r_offset, name, (int) r);
b34976b6 4583 return FALSE;
cf5c0c5b 4584 }
252b5132
RH		 4585 }
4586 }
4587
b34976b6 4588 return TRUE;
252b5132
RH		 4589}
4590
4591/* Finish up dynamic symbol handling. We set the contents of various
4592 dynamic sections here. */
4593
b34976b6 4594static bfd_boolean
55fd94b0
AM		 4595elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4596 struct bfd_link_info *info,
4597 struct elf_link_hash_entry *h,
4598 Elf_Internal_Sym *sym)
252b5132 4599{
6725bdbf 4600 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4601 unsigned plt_entry_size;
4602 const struct elf_i386_backend_data *abed;
dd7e64d4 4603 struct elf_i386_link_hash_entry *eh;
252b5132 4604
6725bdbf 4605 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4606 if (htab == NULL)
4607 return FALSE;
252b5132 4608
25e762b9
RM		 4609 abed = get_elf_i386_backend_data (output_bfd);
4610 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4611
dd7e64d4
L		 4612 eh = (struct elf_i386_link_hash_entry *) h;
4613
252b5132
RH		 4614 if (h->plt.offset != (bfd_vma) -1)
4615 {
252b5132
RH		 4616 bfd_vma plt_index;
4617 bfd_vma got_offset;
947216bf
AM		 4618 Elf_Internal_Rela rel;
4619 bfd_byte *loc;
cbe950e9
L		 4620 asection *plt, *gotplt, *relplt;
4621
4622 /* When building a static executable, use .iplt, .igot.plt and
4623 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4624 if (htab->elf.splt != NULL)
cbe950e9 4625 {
6de2ae4a
L		 4626 plt = htab->elf.splt;
4627 gotplt = htab->elf.sgotplt;
4628 relplt = htab->elf.srelplt;
cbe950e9
L		 4629 }
4630 else
4631 {
6de2ae4a
L		 4632 plt = htab->elf.iplt;
4633 gotplt = htab->elf.igotplt;
4634 relplt = htab->elf.irelplt;
cbe950e9 4635 }
252b5132
RH		 4636
4637 /* This symbol has an entry in the procedure linkage table. Set
4638 it up. */
4639
cbe950e9
L		 4640 if ((h->dynindx == -1
4641 && !((h->forced_local || info->executable)
4642 && h->def_regular
4643 && h->type == STT_GNU_IFUNC))
4644 || plt == NULL
4645 || gotplt == NULL
4646 || relplt == NULL)
cec7f46a 4647 abort ();
252b5132
RH		 4648
4649 /* Get the index in the procedure linkage table which
4650 corresponds to this symbol. This is the index of this symbol
4651 in all the symbols for which we are making plt entries. The
cbe950e9 4652 first entry in the procedure linkage table is reserved.
252b5132 4653
cbe950e9 4654 Get the offset into the .got table of the entry that
252b5132 4655 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4656 The first three are reserved.
6bbec505 4657
cbe950e9
L		 4658 For static executables, we don't reserve anything. */
4659
6de2ae4a 4660 if (plt == htab->elf.splt)
cbe950e9 4661 {
e1f98742
L		 4662 got_offset = h->plt.offset / plt_entry_size - 1;
4663 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4664 }
4665 else
4666 {
e1f98742
L		 4667 got_offset = h->plt.offset / plt_entry_size;
4668 got_offset = got_offset * 4;
cbe950e9 4669 }
252b5132
RH		 4670
4671 /* Fill in the entry in the procedure linkage table. */
4672 if (! info->shared)
4673 {
25e762b9
RM		 4674 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4675 abed->plt->plt_entry_size);
252b5132 4676 bfd_put_32 (output_bfd,
cbe950e9
L		 4677 (gotplt->output_section->vma
4678 + gotplt->output_offset
252b5132 4679 + got_offset),
25e762b9
RM		 4680 plt->contents + h->plt.offset
4681 + abed->plt->plt_got_offset);
eac338cf 4682
25e762b9 4683 if (abed->is_vxworks)
eac338cf
PB		 4684 {
4685 int s, k, reloc_index;
4686
4687 /* Create the R_386_32 relocation referencing the GOT
4688 for this PLT entry. */
4689
4690 /* S: Current slot number (zero-based). */
25e762b9
RM		 4691 s = ((h->plt.offset - abed->plt->plt_entry_size)
4692 / abed->plt->plt_entry_size);
eac338cf
PB		 4693 /* K: Number of relocations for PLTResolve. */
4694 if (info->shared)
4695 k = PLTRESOLVE_RELOCS_SHLIB;
4696 else
4697 k = PLTRESOLVE_RELOCS;
4698 /* Skip the PLTresolve relocations, and the relocations for
4699 the other PLT slots. */
4700 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4701 loc = (htab->srelplt2->contents + reloc_index
4702 * sizeof (Elf32_External_Rel));
4703
6de2ae4a
L		 4704 rel.r_offset = (htab->elf.splt->output_section->vma
4705 + htab->elf.splt->output_offset
eac338cf 4706 + h->plt.offset + 2),
7325306f 4707 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4708 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4709
4710 /* Create the R_386_32 relocation referencing the beginning of
4711 the PLT for this GOT entry. */
6de2ae4a
L		 4712 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4713 + htab->elf.sgotplt->output_offset
eac338cf 4714 + got_offset);
7325306f 4715 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4716 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4717 loc + sizeof (Elf32_External_Rel));
eac338cf 4718 }
252b5132
RH		 4719 }
4720 else
4721 {
25e762b9
RM		 4722 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4723 abed->plt->plt_entry_size);
252b5132 4724 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4725 plt->contents + h->plt.offset
4726 + abed->plt->plt_got_offset);
252b5132
RH		 4727 }
4728
252b5132
RH		 4729 /* Fill in the entry in the global offset table. */
4730 bfd_put_32 (output_bfd,
cbe950e9
L		 4731 (plt->output_section->vma
4732 + plt->output_offset
252b5132 4733 + h->plt.offset
25e762b9 4734 + abed->plt->plt_lazy_offset),
cbe950e9 4735 gotplt->contents + got_offset);
252b5132
RH		 4736
4737 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4738 rel.r_offset = (gotplt->output_section->vma
4739 + gotplt->output_offset
252b5132 4740 + got_offset);
cbe950e9
L		 4741 if (h->dynindx == -1
4742 || ((info->executable
4743 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4744 && h->def_regular
4745 && h->type == STT_GNU_IFUNC))
4746 {
4747 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4748 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4749 in the .got.plt section. */
4750 bfd_put_32 (output_bfd,
23209a78 4751 (h->root.u.def.value
cbe950e9
L		 4752 + h->root.u.def.section->output_section->vma
4753 + h->root.u.def.section->output_offset),
4754 gotplt->contents + got_offset);
4755 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4756 /* R_386_IRELATIVE comes last. */
4757 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4758 }
4759 else
e1f98742
L		 4760 {
4761 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4762 plt_index = htab->next_jump_slot_index++;
4763 }
cbe950e9 4764 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4765 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4766
e1f98742
L		 4767 /* Don't fill PLT entry for static executables. */
4768 if (plt == htab->elf.splt)
4769 {
4770 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4771 plt->contents + h->plt.offset
4772 + abed->plt->plt_reloc_offset);
4773 bfd_put_32 (output_bfd, - (h->plt.offset
4774 + abed->plt->plt_plt_offset + 4),
4775 plt->contents + h->plt.offset
4776 + abed->plt->plt_plt_offset);
4777 }
dd7e64d4
L		 4778 }
4779 else if (eh->plt_got.offset != (bfd_vma) -1)
4780 {
4781 bfd_vma got_offset, plt_offset;
4782 asection *plt, *got, *gotplt;
4783 const bfd_byte *got_plt_entry;
4784
4785 /* Offset of displacement of the indirect jump. */
4786 bfd_vma plt_got_offset = 2;
e1f98742 4787
dd7e64d4
L		 4788 /* Set the entry in the GOT procedure linkage table. */
4789 plt = htab->plt_got;
4790 got = htab->elf.sgot;
4791 gotplt = htab->elf.sgotplt;
4792 got_offset = h->got.offset;
4793
4794 if (got_offset == (bfd_vma) -1
4795 || plt == NULL
4796 || got == NULL
4797 || gotplt == NULL)
4798 abort ();
4799
4800 /* Fill in the entry in the GOT procedure linkage table. */
4801 if (! info->shared)
252b5132 4802 {
dd7e64d4
L		 4803 got_plt_entry = elf_i386_got_plt_entry;
4804 got_offset += got->output_section->vma + got->output_offset;
252b5132 4805 }
dd7e64d4
L		 4806 else
4807 {
4808 got_plt_entry = elf_i386_pic_got_plt_entry;
4809 got_offset += (got->output_section->vma
4810 + got->output_offset
4811 - gotplt->output_section->vma
4812 - gotplt->output_offset);
4813 }
4814
4815 plt_offset = eh->plt_got.offset;
4816 memcpy (plt->contents + plt_offset, got_plt_entry,
4817 sizeof (elf_i386_got_plt_entry));
4818 bfd_put_32 (output_bfd, got_offset,
4819 plt->contents + plt_offset + plt_got_offset);
4820 }
4821
4822 if (!h->def_regular
4823 && (h->plt.offset != (bfd_vma) -1
4824 || eh->plt_got.offset != (bfd_vma) -1))
4825 {
4826 /* Mark the symbol as undefined, rather than as defined in
4827 the .plt section. Leave the value if there were any
4828 relocations where pointer equality matters (this is a clue
4829 for the dynamic linker, to make function pointer
4830 comparisons work between an application and shared
4831 library), otherwise set it to zero. If a function is only
4832 called from a binary, there is no need to slow down
4833 shared libraries because of that. */
4834 sym->st_shndx = SHN_UNDEF;
4835 if (!h->pointer_equality_needed)
4836 sym->st_value = 0;
252b5132
RH		 4837 }
4838
13ae64f3 4839 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4840 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4841 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4842 {
947216bf 4843 Elf_Internal_Rela rel;
252b5132
RH		 4844
4845 /* This symbol has an entry in the global offset table. Set it
4846 up. */
4847
6de2ae4a 4848 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4849 abort ();
252b5132 4850
6de2ae4a
L		 4851 rel.r_offset = (htab->elf.sgot->output_section->vma
4852 + htab->elf.sgot->output_offset
dc810e39 4853 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4854
dd5724d5
AM		 4855 /* If this is a static link, or it is a -Bsymbolic link and the
4856 symbol is defined locally or was forced to be local because
4857 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4858 The entry in the global offset table will already have been
4859 initialized in the relocate_section function. */
710ab287 4860 if (h->def_regular
0018b0a3
L		 4861 && h->type == STT_GNU_IFUNC)
4862 {
710ab287
L		 4863 if (info->shared)
4864 {
4865 /* Generate R_386_GLOB_DAT. */
4866 goto do_glob_dat;
4867 }
4868 else
4869 {
cd2b2c10
L		 4870 asection *plt;
4871
710ab287
L		 4872 if (!h->pointer_equality_needed)
4873 abort ();
4874
4875 /* For non-shared object, we can't use .got.plt, which
4876 contains the real function addres if we need pointer
4877 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4878 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4879 bfd_put_32 (output_bfd,
4880 (plt->output_section->vma
4881 + plt->output_offset + h->plt.offset),
6de2ae4a 4882 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4883 return TRUE;
4884 }
0018b0a3
L		 4885 }
4886 else if (info->shared
4887 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4888 {
6725bdbf 4889 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4890 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4891 }
252b5132
RH		 4892 else
4893 {
dd5724d5 4894 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4895do_glob_dat:
6725bdbf 4896 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4897 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4898 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4899 }
4900
59d6ffb2 4901 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 4902 }
4903
f5385ebf 4904 if (h->needs_copy)
252b5132 4905 {
947216bf 4906 Elf_Internal_Rela rel;
252b5132
RH		 4907
4908 /* This symbol needs a copy reloc. Set it up. */
4909
ffb2e45b
AM		 4910 if (h->dynindx == -1
4911 || (h->root.type != bfd_link_hash_defined
4912 && h->root.type != bfd_link_hash_defweak)
4913 || htab->srelbss == NULL)
4914 abort ();
252b5132
RH		 4915
4916 rel.r_offset = (h->root.u.def.value
4917 + h->root.u.def.section->output_section->vma
4918 + h->root.u.def.section->output_offset);
4919 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 4920 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 4921 }
4922
b34976b6 4923 return TRUE;
252b5132
RH		 4924}
4925
c25bc9fc
L		 4926/* Finish up local dynamic symbol handling. We set the contents of
4927 various dynamic sections here. */
4928
4929static bfd_boolean
4930elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4931{
4932 struct elf_link_hash_entry *h
4933 = (struct elf_link_hash_entry *) *slot;
4934 struct bfd_link_info *info
23209a78 4935 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4936
4937 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4938 h, NULL);
4939}
4940
38701953
AM		 4941/* Used to decide how to sort relocs in an optimal manner for the
4942 dynamic linker, before writing them out. */
4943
4944static enum elf_reloc_type_class
7e612e98
AM		 4945elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4946 const asection *rel_sec ATTRIBUTE_UNUSED,
4947 const Elf_Internal_Rela *rela)
38701953 4948{
55fd94b0 4949 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4950 {
4951 case R_386_RELATIVE:
4952 return reloc_class_relative;
4953 case R_386_JUMP_SLOT:
4954 return reloc_class_plt;
4955 case R_386_COPY:
4956 return reloc_class_copy;
4957 default:
4958 return reloc_class_normal;
4959 }
4960}
4961
252b5132
RH		 4962/* Finish up the dynamic sections. */
4963
b34976b6 4964static bfd_boolean
55fd94b0
AM		 4965elf_i386_finish_dynamic_sections (bfd *output_bfd,
4966 struct bfd_link_info *info)
252b5132 4967{
6725bdbf 4968 struct elf_i386_link_hash_table *htab;
252b5132 4969 bfd *dynobj;
252b5132 4970 asection *sdyn;
25e762b9 4971 const struct elf_i386_backend_data *abed;
252b5132 4972
6725bdbf 4973 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4974 if (htab == NULL)
4975 return FALSE;
4976
ebe50bae 4977 dynobj = htab->elf.dynobj;
3d4d4302 4978 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4979 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4980
ebe50bae 4981 if (htab->elf.dynamic_sections_created)
252b5132 4982 {
252b5132
RH		 4983 Elf32_External_Dyn *dyncon, *dynconend;
4984
6de2ae4a 4985 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4986 abort ();
252b5132
RH		 4987
4988 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4989 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4990 for (; dyncon < dynconend; dyncon++)
4991 {
4992 Elf_Internal_Dyn dyn;
51b64d56 4993 asection *s;
252b5132
RH		 4994
4995 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4996
4997 switch (dyn.d_tag)
4998 {
4999 default:
25e762b9
RM		 5000 if (abed->is_vxworks
5001 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 5002 break;
0ac8d2ca 5003 continue;
252b5132
RH		 5004
5005 case DT_PLTGOT:
6de2ae4a 5006 s = htab->elf.sgotplt;
8c37241b 5007 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 5008 break;
5009
252b5132 5010 case DT_JMPREL:
6de2ae4a 5011 s = htab->elf.srelplt;
6348e046 5012 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 5013 break;
5014
5015 case DT_PLTRELSZ:
6de2ae4a 5016 s = htab->elf.srelplt;
eea6121a 5017 dyn.d_un.d_val = s->size;
252b5132
RH		 5018 break;
5019
5020 case DT_RELSZ:
5021 /* My reading of the SVR4 ABI indicates that the
5022 procedure linkage table relocs (DT_JMPREL) should be
5023 included in the overall relocs (DT_REL). This is
5024 what Solaris does. However, UnixWare can not handle
5025 that case. Therefore, we override the DT_RELSZ entry
6348e046 5026 here to make it not include the JMPREL relocs. */
6de2ae4a 5027 s = htab->elf.srelplt;
6348e046
AM		 5028 if (s == NULL)
5029 continue;
eea6121a 5030 dyn.d_un.d_val -= s->size;
6348e046
AM		 5031 break;
5032
5033 case DT_REL:
5034 /* We may not be using the standard ELF linker script.
5035 If .rel.plt is the first .rel section, we adjust
5036 DT_REL to not include it. */
6de2ae4a 5037 s = htab->elf.srelplt;
6348e046
AM		 5038 if (s == NULL)
5039 continue;
5040 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
5041 continue;
eea6121a 5042 dyn.d_un.d_ptr += s->size;
252b5132
RH		 5043 break;
5044 }
0ac8d2ca
AM		 5045
5046 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 5047 }
5048
5049 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 5050 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 5051 {
5052 if (info->shared)
eac338cf 5053 {
25e762b9
RM		 5054 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
5055 abed->plt->plt0_entry_size);
5056 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5057 abed->plt0_pad_byte,
5058 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 5059 }
252b5132
RH		 5060 else
5061 {
25e762b9
RM		 5062 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
5063 abed->plt->plt0_entry_size);
5064 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5065 abed->plt0_pad_byte,
5066 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 5067 bfd_put_32 (output_bfd,
6de2ae4a
L		 5068 (htab->elf.sgotplt->output_section->vma
5069 + htab->elf.sgotplt->output_offset
6725bdbf 5070 + 4),
25e762b9
RM		 5071 htab->elf.splt->contents
5072 + abed->plt->plt0_got1_offset);
252b5132 5073 bfd_put_32 (output_bfd,
6de2ae4a
L		 5074 (htab->elf.sgotplt->output_section->vma
5075 + htab->elf.sgotplt->output_offset
6725bdbf 5076 + 8),
25e762b9
RM		 5077 htab->elf.splt->contents
5078 + abed->plt->plt0_got2_offset);
eac338cf 5079
25e762b9 5080 if (abed->is_vxworks)
eac338cf
PB		 5081 {
5082 Elf_Internal_Rela rel;
7325306f 5083
eac338cf
PB		 5084 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
5085 On IA32 we use REL relocations so the addend goes in
5086 the PLT directly. */
6de2ae4a
L		 5087 rel.r_offset = (htab->elf.splt->output_section->vma
5088 + htab->elf.splt->output_offset
25e762b9 5089 + abed->plt->plt0_got1_offset);
7325306f 5090 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5091 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5092 htab->srelplt2->contents);
5093 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 5094 rel.r_offset = (htab->elf.splt->output_section->vma
5095 + htab->elf.splt->output_offset
25e762b9 5096 + abed->plt->plt0_got2_offset);
7325306f 5097 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5098 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5099 htab->srelplt2->contents +
5100 sizeof (Elf32_External_Rel));
5101 }
252b5132
RH		 5102 }
5103
5104 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5105 really seem like the right value. */
6de2ae4a 5106 elf_section_data (htab->elf.splt->output_section)
6725bdbf 5107 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 5108
5109 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 5110 if (abed->is_vxworks && !info->shared)
eac338cf 5111 {
25e762b9
RM		 5112 int num_plts = (htab->elf.splt->size
5113 / abed->plt->plt_entry_size) - 1;
4c9b0de6 5114 unsigned char *p;
eac338cf
PB		 5115
5116 p = htab->srelplt2->contents;
5117 if (info->shared)
5118 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5119 else
5120 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5121
5122 for (; num_plts; num_plts--)
5123 {
5124 Elf_Internal_Rela rel;
5125 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5126 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5127 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5128 p += sizeof (Elf32_External_Rel);
5129
5130 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5131 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 5132 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5133 p += sizeof (Elf32_External_Rel);
5134 }
5135 }
252b5132
RH		 5136 }
5137 }
5138
6de2ae4a 5139 if (htab->elf.sgotplt)
252b5132 5140 {
56d4289c
L		 5141 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5142 {
5143 (*_bfd_error_handler)
5144 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5145 return FALSE;
5146 }
5147
12d0ee4a 5148 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5149 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 5150 {
5151 bfd_put_32 (output_bfd,
55fd94b0 5152 (sdyn == NULL ? 0
12d0ee4a 5153 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 5154 htab->elf.sgotplt->contents);
5155 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5156 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 5157 }
252b5132 5158
6de2ae4a 5159 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5160 }
8c37241b 5161
e41b3a13 5162 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5163 if (htab->plt_eh_frame != NULL
5164 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5165 {
5166 if (htab->elf.splt != NULL
5167 && htab->elf.splt->size != 0
5168 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5169 && htab->elf.splt->output_section != NULL
5170 && htab->plt_eh_frame->output_section != NULL)
5171 {
5172 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5173 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5174 + htab->plt_eh_frame->output_offset
5175 + PLT_FDE_START_OFFSET;
5176 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5177 htab->plt_eh_frame->contents
5178 + PLT_FDE_START_OFFSET);
5179 }
5180 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5181 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5182 {
5183 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5184 htab->plt_eh_frame,
5185 htab->plt_eh_frame->contents))
5186 return FALSE;
5187 }
5188 }
5189
6de2ae4a
L		 5190 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5191 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5192
c25bc9fc
L		 5193 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5194 htab_traverse (htab->loc_hash_table,
5195 elf_i386_finish_local_dynamic_symbol,
5196 info);
5197
b34976b6 5198 return TRUE;
252b5132
RH		 5199}
5200
3972882e 5201/* Return an array of PLT entry symbol values. */
4c45e5c9 5202
3972882e
L		 5203static bfd_vma *
5204elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5205 asection *relplt)
4c45e5c9 5206{
3972882e
L		 5207 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5208 arelent *p;
5209 long count, i;
5210 bfd_vma *plt_sym_val;
144bed8d 5211 bfd_vma plt_offset;
3972882e
L		 5212 bfd_byte *plt_contents;
5213 const struct elf_i386_backend_data *bed
5214 = get_elf_i386_backend_data (abfd);
5215 Elf_Internal_Shdr *hdr;
5216
5217 /* Get the .plt section contents. */
5218 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5219 if (plt_contents == NULL)
5220 return NULL;
5221 if (!bfd_get_section_contents (abfd, (asection *) plt,
5222 plt_contents, 0, plt->size))
5223 {
5224bad_return:
5225 free (plt_contents);
5226 return NULL;
5227 }
144bed8d 5228
3972882e
L		 5229 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5230 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5231 goto bad_return;
144bed8d 5232
3972882e
L		 5233 hdr = &elf_section_data (relplt)->this_hdr;
5234 count = relplt->size / hdr->sh_entsize;
5235
5236 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5237 if (plt_sym_val == NULL)
5238 goto bad_return;
cca5b8b6 5239
35181b3e 5240 for (i = 0; i < count; i++)
3972882e 5241 plt_sym_val[i] = -1;
cca5b8b6 5242
3972882e
L		 5243 plt_offset = bed->plt->plt_entry_size;
5244 p = relplt->relocation;
5245 for (i = 0; i < count; i++, p++)
144bed8d 5246 {
3972882e
L		 5247 long reloc_index;
5248
6f25f223 5249 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
533d0af0 5250 if (p->howto == NULL)
6f25f223 5251 continue;
533d0af0
L		 5252
5253 if (p->howto->type != R_386_JUMP_SLOT
5254 && p->howto->type != R_386_IRELATIVE)
3972882e
L		 5255 continue;
5256
5257 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
5258 + bed->plt->plt_reloc_offset));
5259 reloc_index /= sizeof (Elf32_External_Rel);
5260 if (reloc_index >= count)
5261 abort ();
5262 plt_sym_val[reloc_index] = plt->vma + plt_offset;
144bed8d 5263 plt_offset += bed->plt->plt_entry_size;
fca6ae69
L		 5264
5265 /* PR binutils/18437: Skip extra relocations in the .rel.plt
5266 section. */
5267 if (plt_offset >= plt->size)
5268 break;
144bed8d
L		 5269 }
5270
3972882e
L		 5271 free (plt_contents);
5272
5273 return plt_sym_val;
5274}
5275
5276/* Similar to _bfd_elf_get_synthetic_symtab. */
5277
5278static long
5279elf_i386_get_synthetic_symtab (bfd *abfd,
5280 long symcount,
5281 asymbol **syms,
5282 long dynsymcount,
5283 asymbol **dynsyms,
5284 asymbol **ret)
5285{
5286 asection *plt = bfd_get_section_by_name (abfd, ".plt");
5287 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
5288 dynsymcount, dynsyms, ret,
5289 plt,
5290 elf_i386_get_plt_sym_val);
4c45e5c9
JJ		 5291}
5292
fdc90cb4
JJ		 5293/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5294
5295static bfd_boolean
5296elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5297{
5298 if (h->plt.offset != (bfd_vma) -1
5299 && !h->def_regular
5300 && !h->pointer_equality_needed)
5301 return FALSE;
5302
5303 return _bfd_elf_hash_symbol (h);
5304}
4c45e5c9 5305
d8045f23
NC		 5306/* Hook called by the linker routine which adds symbols from an object
5307 file. */
5308
5309static bfd_boolean
c16153ae 5310elf_i386_add_symbol_hook (bfd * abfd,
f1885d1e 5311 struct bfd_link_info * info,
d8045f23
NC		 5312 Elf_Internal_Sym * sym,
5313 const char ** namep ATTRIBUTE_UNUSED,
5314 flagword * flagsp ATTRIBUTE_UNUSED,
5315 asection ** secp ATTRIBUTE_UNUSED,
5316 bfd_vma * valp ATTRIBUTE_UNUSED)
5317{
f1885d1e
AM		 5318 if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5319 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
5320 && (abfd->flags & DYNAMIC) == 0
5321 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
f64b2e8d 5322 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC		 5323
5324 return TRUE;
5325}
5326
6d00b590 5327#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 5328#define TARGET_LITTLE_NAME "elf32-i386"
5329#define ELF_ARCH bfd_arch_i386
ae95ffa6 5330#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5331#define ELF_MACHINE_CODE EM_386
5332#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5333
5334#define elf_backend_can_gc_sections 1
51b64d56 5335#define elf_backend_can_refcount 1
252b5132
RH		 5336#define elf_backend_want_got_plt 1
5337#define elf_backend_plt_readonly 1
5338#define elf_backend_want_plt_sym 0
5339#define elf_backend_got_header_size 12
e41b3a13 5340#define elf_backend_plt_alignment 4
f7483970 5341#define elf_backend_extern_protected_data 1
252b5132 5342
8c29f035
AM		 5343/* Support RELA for objdump of prelink objects. */
5344#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5345#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5346
13ae64f3 5347#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5348
dd5724d5
AM		 5349#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5350#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
5351#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5352#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 5353#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5
AM		 5354
5355#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5356#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5357#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5358#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5359#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5360#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5361#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5362#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5363#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5364#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5365#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5366#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5367#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5368#define elf_backend_relocate_section elf_i386_relocate_section
5369#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5370#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5371#define elf_backend_omit_section_dynsym \
5372 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
fdc90cb4 5373#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23 5374#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
dd5724d5 5375
252b5132 5376#include "elf32-target.h"
2bc3c89a
AM		 5377
5378/* FreeBSD support. */
5379
5380#undef TARGET_LITTLE_SYM
6d00b590 5381#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 5382#undef TARGET_LITTLE_NAME
5383#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5384#undef ELF_OSABI
5385#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5386
5387/* The kernel recognizes executables as valid only if they carry a
5388 "FreeBSD" label in the ELF header. So we put this label on all
5389 executables and (for simplicity) also all other object files. */
5390
2bc3c89a 5391static void
d8045f23 5392elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5393{
78245035 5394 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 5395
2bc3c89a 5396#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 5397 {
5398 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5399 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
5400 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
5401 }
caf47ea6 5402#endif
2bc3c89a
AM		 5403}
5404
5405#undef elf_backend_post_process_headers
d8045f23 5406#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5407#undef elf32_bed
5408#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5409
d8045f23
NC		 5410#undef elf_backend_add_symbol_hook
5411
2bc3c89a 5412#include "elf32-target.h"
eac338cf 5413
a6cc6b3b
RO		 5414/* Solaris 2. */
5415
5416#undef TARGET_LITTLE_SYM
6d00b590 5417#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 5418#undef TARGET_LITTLE_NAME
5419#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5420
914082d1
L		 5421#undef elf_backend_post_process_headers
5422
a6cc6b3b
RO		 5423/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5424 objects won't be recognized. */
5425#undef ELF_OSABI
5426
5427#undef elf32_bed
5428#define elf32_bed elf32_i386_sol2_bed
5429
7dc98aea
RO		 5430/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5431 boundary. */
5432#undef elf_backend_static_tls_alignment
5433#define elf_backend_static_tls_alignment 8
5434
a6cc6b3b
RO		 5435/* The Solaris 2 ABI requires a plt symbol on all platforms.
5436
5437 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5438 File, p.63. */
5439#undef elf_backend_want_plt_sym
5440#define elf_backend_want_plt_sym 1
5441
5442#include "elf32-target.h"
5443
bf64a951
L		 5444/* Intel MCU support. */
5445
5446static bfd_boolean
5447elf32_iamcu_elf_object_p (bfd *abfd)
5448{
5449 /* Set the right machine number for an IAMCU elf32 file. */
5450 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
5451 return TRUE;
5452}
5453
5454#undef TARGET_LITTLE_SYM
5455#define TARGET_LITTLE_SYM iamcu_elf32_vec
5456#undef TARGET_LITTLE_NAME
5457#define TARGET_LITTLE_NAME "elf32-iamcu"
5458#undef ELF_ARCH
5459#define ELF_ARCH bfd_arch_iamcu
5460
5461#undef ELF_MACHINE_CODE
5462#define ELF_MACHINE_CODE EM_IAMCU
5463
5464#undef ELF_OSABI
5465
5466#undef elf32_bed
5467#define elf32_bed elf32_iamcu_bed
5468
5469#undef elf_backend_object_p
5470#define elf_backend_object_p elf32_iamcu_elf_object_p
5471
5472#undef elf_backend_static_tls_alignment
5473
5474#undef elf_backend_want_plt_sym
5475#define elf_backend_want_plt_sym 0
5476
5477#include "elf32-target.h"
5478
5479/* Restore defaults. */
5480#undef ELF_ARCH
5481#define ELF_ARCH bfd_arch_i386
5482#undef ELF_MACHINE_CODE
5483#define ELF_MACHINE_CODE EM_386
5484
a27e4371
RM		 5485/* Native Client support. */
5486
5487#undef TARGET_LITTLE_SYM
6d00b590 5488#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 5489#undef TARGET_LITTLE_NAME
5490#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5491#undef elf32_bed
5492#define elf32_bed elf32_i386_nacl_bed
5493
5494#undef ELF_MAXPAGESIZE
5495#define ELF_MAXPAGESIZE 0x10000
5496
5497/* Restore defaults. */
5498#undef ELF_OSABI
5499#undef elf_backend_want_plt_sym
5500#define elf_backend_want_plt_sym 0
5501#undef elf_backend_post_process_headers
a27e4371
RM		 5502#undef elf_backend_static_tls_alignment
5503
5504/* NaCl uses substantially different PLT entries for the same effects. */
5505
5506#undef elf_backend_plt_alignment
5507#define elf_backend_plt_alignment 5
5508#define NACL_PLT_ENTRY_SIZE 64
5509#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5510
5511static const bfd_byte elf_i386_nacl_plt0_entry[] =
5512 {
5513 0xff, 0x35, /* pushl contents of address */
5514 0, 0, 0, 0, /* replaced with address of .got + 4. */
5515 0x8b, 0x0d, /* movl contents of address, %ecx */
5516 0, 0, 0, 0, /* replaced with address of .got + 8. */
5517 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5518 0xff, 0xe1 /* jmp *%ecx */
5519 };
5520
5521static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5522 {
5523 0x8b, 0x0d, /* movl contents of address, %ecx */
5524 0, 0, 0, 0, /* replaced with GOT slot address. */
5525 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5526 0xff, 0xe1, /* jmp *%ecx */
5527
5528 /* Pad to the next 32-byte boundary with nop instructions. */
5529 0x90,
5530 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5531 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5532
5533 /* Lazy GOT entries point here (32-byte aligned). */
5534 0x68, /* pushl immediate */
5535 0, 0, 0, 0, /* replaced with reloc offset. */
5536 0xe9, /* jmp relative */
5537 0, 0, 0, 0, /* replaced with offset to .plt. */
5538
5539 /* Pad to the next 32-byte boundary with nop instructions. */
5540 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5541 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5542 0x90, 0x90
5543 };
5544
5545static const bfd_byte
5546elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5547 {
5548 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5549 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5550 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5551 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5552
5553 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5554 so pad to that size with nop instructions. */
5555 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5556 };
5557
5558static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5559 {
5560 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5561 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5562 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5563 0xff, 0xe1, /* jmp *%ecx */
5564
5565 /* Pad to the next 32-byte boundary with nop instructions. */
5566 0x90,
5567 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5568 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5569
5570 /* Lazy GOT entries point here (32-byte aligned). */
5571 0x68, /* pushl immediate */
5572 0, 0, 0, 0, /* replaced with offset into relocation table. */
5573 0xe9, /* jmp relative */
5574 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5575
5576 /* Pad to the next 32-byte boundary with nop instructions. */
5577 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5578 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5579 0x90, 0x90
5580 };
5581
5582static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5583 {
5584#if (PLT_CIE_LENGTH != 20 \
5585 || PLT_FDE_LENGTH != 36 \
5586 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5587 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5588# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5589#endif
5590 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5591 0, 0, 0, 0, /* CIE ID */
5592 1, /* CIE version */
5593 'z', 'R', 0, /* Augmentation string */
5594 1, /* Code alignment factor */
5595 0x7c, /* Data alignment factor: -4 */
5596 8, /* Return address column */
5597 1, /* Augmentation size */
5598 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5599 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5600 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5601 DW_CFA_nop, DW_CFA_nop,
5602
5603 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5604 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5605 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5606 0, 0, 0, 0, /* .plt size goes here */
5607 0, /* Augmentation size */
5608 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5609 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5610 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5611 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5612 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5613 13, /* Block length */
5614 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5615 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5616 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5617 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5618 DW_CFA_nop, DW_CFA_nop
5619 };
5620
5621static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5622 {
5623 elf_i386_nacl_plt0_entry, /* plt0_entry */
5624 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5625 2, /* plt0_got1_offset */
5626 8, /* plt0_got2_offset */
5627 elf_i386_nacl_plt_entry, /* plt_entry */
5628 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5629 2, /* plt_got_offset */
5630 33, /* plt_reloc_offset */
5631 38, /* plt_plt_offset */
5632 32, /* plt_lazy_offset */
5633 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5634 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5635 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5636 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5637 };
5638
5639static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5640 {
5641 &elf_i386_nacl_plt, /* plt */
5642 0x90, /* plt0_pad_byte: nop insn */
5643 0, /* is_vxworks */
5644 };
5645
64b384e1
RM		 5646static bfd_boolean
5647elf32_i386_nacl_elf_object_p (bfd *abfd)
5648{
5649 /* Set the right machine number for a NaCl i386 ELF32 file. */
5650 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
5651 return TRUE;
5652}
5653
a27e4371
RM		 5654#undef elf_backend_arch_data
5655#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5656
64b384e1
RM		 5657#undef elf_backend_object_p
5658#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 5659#undef elf_backend_modify_segment_map
5660#define elf_backend_modify_segment_map nacl_modify_segment_map
5661#undef elf_backend_modify_program_headers
5662#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5663#undef elf_backend_final_write_processing
5664#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5665
a27e4371
RM		 5666#include "elf32-target.h"
5667
5a68afcf 5668/* Restore defaults. */
64b384e1 5669#undef elf_backend_object_p
5a68afcf
RM		 5670#undef elf_backend_modify_segment_map
5671#undef elf_backend_modify_program_headers
887badb3 5672#undef elf_backend_final_write_processing
5a68afcf 5673
eac338cf
PB		 5674/* VxWorks support. */
5675
5676#undef TARGET_LITTLE_SYM
6d00b590 5677#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 5678#undef TARGET_LITTLE_NAME
5679#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5680#undef ELF_OSABI
a27e4371
RM		 5681#undef elf_backend_plt_alignment
5682#define elf_backend_plt_alignment 4
eac338cf 5683
23209a78
RM		 5684static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5685 {
25e762b9 5686 &elf_i386_plt, /* plt */
23209a78
RM		 5687 0x90, /* plt0_pad_byte */
5688 1, /* is_vxworks */
5689 };
eac338cf 5690
23209a78
RM		 5691#undef elf_backend_arch_data
5692#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5693
13285a1b 5694#undef elf_backend_relocs_compatible
eac338cf
PB		 5695#undef elf_backend_add_symbol_hook
5696#define elf_backend_add_symbol_hook \
5697 elf_vxworks_add_symbol_hook
5698#undef elf_backend_link_output_symbol_hook
5699#define elf_backend_link_output_symbol_hook \
9c72ff84 5700 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5701#undef elf_backend_emit_relocs
5702#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5703#undef elf_backend_final_write_processing
5704#define elf_backend_final_write_processing \
5705 elf_vxworks_final_write_processing
7dc98aea 5706#undef elf_backend_static_tls_alignment
eac338cf
PB		 5707
5708/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5709 define it. */
5710#undef elf_backend_want_plt_sym
5711#define elf_backend_want_plt_sym 1
5712
5713#undef elf32_bed
5714#define elf32_bed elf32_i386_vxworks_bed
5715
5716#include "elf32-target.h"
GDB Binutils - Deliverables
This page took 1.233162 seconds and 4 git commands to generate.