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Add Intel MCU support to bfd
[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
1888 && h->got.refcount > 0
1889 && htab->plt_got == NULL)
1890 {
1891 /* Create the GOT procedure linkage table. */
1892 unsigned int plt_got_align;
1893 const struct elf_backend_data *bed;
1894
1895 bed = get_elf_backend_data (info->output_bfd);
1896 BFD_ASSERT (sizeof (elf_i386_got_plt_entry) == 8
1897 && (sizeof (elf_i386_got_plt_entry)
1898 == sizeof (elf_i386_pic_got_plt_entry)));
1899 plt_got_align = 3;
1900
1901 if (htab->elf.dynobj == NULL)
1902 htab->elf.dynobj = abfd;
1903 htab->plt_got
1904 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
1905 ".plt.got",
1906 (bed->dynamic_sec_flags
1907 | SEC_ALLOC
1908 | SEC_CODE
1909 | SEC_LOAD
1910 | SEC_READONLY));
1911 if (htab->plt_got == NULL
1912 || !bfd_set_section_alignment (htab->elf.dynobj,
1913 htab->plt_got,
1914 plt_got_align))
1915 return FALSE;
1916 }
c1d11331
L		 1917
1918 if (r_type == R_386_GOT32
1919 && (h == NULL || h->type != STT_GNU_IFUNC))
1920 sec->need_convert_mov_to_lea = 1;
252b5132
RH		 1921 }
1922
b34976b6 1923 return TRUE;
252b5132
RH		 1924}
1925
1926/* Return the section that should be marked against GC for a given
1927 relocation. */
1928
1929static asection *
55fd94b0 1930elf_i386_gc_mark_hook (asection *sec,
07adf181 1931 struct bfd_link_info *info,
55fd94b0
AM		 1932 Elf_Internal_Rela *rel,
1933 struct elf_link_hash_entry *h,
1934 Elf_Internal_Sym *sym)
252b5132
RH		 1935{
1936 if (h != NULL)
07adf181
AM		 1937 switch (ELF32_R_TYPE (rel->r_info))
1938 {
1939 case R_386_GNU_VTINHERIT:
1940 case R_386_GNU_VTENTRY:
1941 return NULL;
1942 }
1943
1944 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1945}
1946
1947/* Update the got entry reference counts for the section being removed. */
1948
b34976b6 1949static bfd_boolean
55fd94b0
AM		 1950elf_i386_gc_sweep_hook (bfd *abfd,
1951 struct bfd_link_info *info,
1952 asection *sec,
1953 const Elf_Internal_Rela *relocs)
252b5132 1954{
4dfe6ac6 1955 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 1956 Elf_Internal_Shdr *symtab_hdr;
1957 struct elf_link_hash_entry **sym_hashes;
1958 bfd_signed_vma *local_got_refcounts;
1959 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1960
7dda2462
TG		 1961 if (info->relocatable)
1962 return TRUE;
1963
4dfe6ac6
NC		 1964 htab = elf_i386_hash_table (info);
1965 if (htab == NULL)
1966 return FALSE;
1967
ec338859 1968 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1969
0ffa91dd 1970 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 1971 sym_hashes = elf_sym_hashes (abfd);
1972 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1973
1974 relend = relocs + sec->reloc_count;
1975 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1976 {
1977 unsigned long r_symndx;
1978 unsigned int r_type;
1979 struct elf_link_hash_entry *h = NULL;
37e55690 1980
26e41594
AM		 1981 r_symndx = ELF32_R_SYM (rel->r_info);
1982 if (r_symndx >= symtab_hdr->sh_info)
1983 {
26e41594 1984 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1985 while (h->root.type == bfd_link_hash_indirect
1986 || h->root.type == bfd_link_hash_warning)
1987 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1988 }
bb1cb422
L		 1989 else
1990 {
1991 /* A local symbol. */
1992 Elf_Internal_Sym *isym;
1993
1994 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1995 abfd, r_symndx);
1996
1997 /* Check relocation against local STT_GNU_IFUNC symbol. */
1998 if (isym != NULL
1999 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
2000 {
2001 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
2002 if (h == NULL)
2003 abort ();
2004 }
2005 }
0c715baa 2006
3db2e7dd
L		 2007 if (h)
2008 {
2009 struct elf_i386_link_hash_entry *eh;
2010 struct elf_dyn_relocs **pp;
2011 struct elf_dyn_relocs *p;
2012
2013 eh = (struct elf_i386_link_hash_entry *) h;
2014 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2015 if (p->sec == sec)
2016 {
2017 /* Everything must go for SEC. */
2018 *pp = p->next;
2019 break;
2020 }
2021 }
2022
26e41594 2023 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 2024 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
2025 symtab_hdr, sym_hashes,
2026 &r_type, GOT_UNKNOWN,
23209a78 2027 rel, relend, h, r_symndx))
142411ca
L		 2028 return FALSE;
2029
26e41594
AM		 2030 switch (r_type)
2031 {
2032 case R_386_TLS_LDM:
4dfe6ac6
NC		 2033 if (htab->tls_ldm_got.refcount > 0)
2034 htab->tls_ldm_got.refcount -= 1;
26e41594 2035 break;
0c715baa 2036
26e41594 2037 case R_386_TLS_GD:
67a4f2b7
AO		 2038 case R_386_TLS_GOTDESC:
2039 case R_386_TLS_DESC_CALL:
26e41594
AM		 2040 case R_386_TLS_IE_32:
2041 case R_386_TLS_IE:
2042 case R_386_TLS_GOTIE:
2043 case R_386_GOT32:
2044 if (h != NULL)
2045 {
2046 if (h->got.refcount > 0)
2047 h->got.refcount -= 1;
bb1cb422
L		 2048 if (h->type == STT_GNU_IFUNC)
2049 {
2050 if (h->plt.refcount > 0)
2051 h->plt.refcount -= 1;
2052 }
26e41594
AM		 2053 }
2054 else if (local_got_refcounts != NULL)
2055 {
2056 if (local_got_refcounts[r_symndx] > 0)
2057 local_got_refcounts[r_symndx] -= 1;
2058 }
2059 break;
0c715baa 2060
26e41594
AM		 2061 case R_386_32:
2062 case R_386_PC32:
1788fc08 2063 case R_386_SIZE32:
3db2e7dd
L		 2064 if (info->shared
2065 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM		 2066 break;
2067 /* Fall through */
6725bdbf 2068
26e41594
AM		 2069 case R_386_PLT32:
2070 if (h != NULL)
2071 {
2072 if (h->plt.refcount > 0)
2073 h->plt.refcount -= 1;
2074 }
2075 break;
dd5724d5 2076
bb1cb422
L		 2077 case R_386_GOTOFF:
2078 if (h != NULL && h->type == STT_GNU_IFUNC)
2079 {
2080 if (h->got.refcount > 0)
2081 h->got.refcount -= 1;
2082 if (h->plt.refcount > 0)
2083 h->plt.refcount -= 1;
2084 }
2085 break;
2086
26e41594
AM		 2087 default:
2088 break;
2089 }
2090 }
252b5132 2091
b34976b6 2092 return TRUE;
252b5132
RH		 2093}
2094
2095/* Adjust a symbol defined by a dynamic object and referenced by a
2096 regular object. The current definition is in some section of the
2097 dynamic object, but we're not including those sections. We have to
2098 change the definition to something the rest of the link can
2099 understand. */
2100
b34976b6 2101static bfd_boolean
55fd94b0
AM		 2102elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2103 struct elf_link_hash_entry *h)
252b5132 2104{
6725bdbf 2105 struct elf_i386_link_hash_table *htab;
252b5132 2106 asection *s;
5ca5bb35
L		 2107 struct elf_i386_link_hash_entry *eh;
2108 struct elf_dyn_relocs *p;
252b5132 2109
cbe950e9
L		 2110 /* STT_GNU_IFUNC symbol must go through PLT. */
2111 if (h->type == STT_GNU_IFUNC)
2112 {
73bcf233
L		 2113 /* All local STT_GNU_IFUNC references must be treate as local
2114 calls via local PLT. */
5ca5bb35
L		 2115 if (h->ref_regular
2116 && SYMBOL_CALLS_LOCAL (info, h))
2117 {
73bcf233 2118 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2119 struct elf_dyn_relocs **pp;
2120
2121 eh = (struct elf_i386_link_hash_entry *) h;
2122 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2123 {
2124 pc_count += p->pc_count;
2125 p->count -= p->pc_count;
2126 p->pc_count = 0;
73bcf233 2127 count += p->count;
5ca5bb35
L		 2128 if (p->count == 0)
2129 *pp = p->next;
2130 else
2131 pp = &p->next;
2132 }
2133
73bcf233 2134 if (pc_count || count)
5ca5bb35
L		 2135 {
2136 h->needs_plt = 1;
5ca5bb35 2137 h->non_got_ref = 1;
a5479e5f
L		 2138 if (h->plt.refcount <= 0)
2139 h->plt.refcount = 1;
2140 else
2141 h->plt.refcount += 1;
5ca5bb35
L		 2142 }
2143 }
2144
cbe950e9
L		 2145 if (h->plt.refcount <= 0)
2146 {
2147 h->plt.offset = (bfd_vma) -1;
2148 h->needs_plt = 0;
2149 }
2150 return TRUE;
2151 }
2152
252b5132
RH		 2153 /* If this is a function, put it in the procedure linkage table. We
2154 will fill in the contents of the procedure linkage table later,
2155 when we know the address of the .got section. */
2156 if (h->type == STT_FUNC
f5385ebf 2157 || h->needs_plt)
252b5132 2158 {
6725bdbf 2159 if (h->plt.refcount <= 0
9c7a29a3
AM		 2160 || SYMBOL_CALLS_LOCAL (info, h)
2161 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2162 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2163 {
2164 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2165 file, but the symbol was never referred to by a dynamic
2166 object, or if all references were garbage collected. In
2167 such a case, we don't actually need to build a procedure
2168 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2169 h->plt.offset = (bfd_vma) -1;
f5385ebf 2170 h->needs_plt = 0;
252b5132
RH		 2171 }
2172
b34976b6 2173 return TRUE;
252b5132 2174 }
6725bdbf
AM		 2175 else
2176 /* It's possible that we incorrectly decided a .plt reloc was
2177 needed for an R_386_PC32 reloc to a non-function sym in
2178 check_relocs. We can't decide accurately between function and
2179 non-function syms in check-relocs; Objects loaded later in
2180 the link may change h->type. So fix it now. */
bbd7ec4a 2181 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2182
2183 /* If this is a weak symbol, and there is a real definition, the
2184 processor independent code will have arranged for us to see the
2185 real definition first, and we can just use the same value. */
f6e332e6 2186 if (h->u.weakdef != NULL)
252b5132 2187 {
f6e332e6
AM		 2188 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2189 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2190 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2191 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2192 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2193 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2194 return TRUE;
252b5132
RH		 2195 }
2196
2197 /* This is a reference to a symbol defined by a dynamic object which
2198 is not a function. */
2199
2200 /* If we are creating a shared library, we must presume that the
2201 only references to the symbol are via the global offset table.
2202 For such cases we need not do anything here; the relocations will
2203 be handled correctly by relocate_section. */
d5597ebc 2204 if (!info->executable)
b34976b6 2205 return TRUE;
252b5132 2206
7843f00e 2207 /* If there are no references to this symbol that do not use the
d5597ebc
L		 2208 GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
2209 reloc. */
2210 eh = (struct elf_i386_link_hash_entry *) h;
2211 if (!h->non_got_ref && !eh->gotoff_ref)
b34976b6 2212 return TRUE;
7843f00e 2213
8bd621d8
AM		 2214 /* If -z nocopyreloc was given, we won't generate them either. */
2215 if (info->nocopyreloc)
2216 {
f5385ebf 2217 h->non_got_ref = 0;
b34976b6 2218 return TRUE;
8bd621d8
AM		 2219 }
2220
643796e3 2221 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2222 if (htab == NULL)
2223 return FALSE;
643796e3 2224
d5597ebc
L		 2225 /* If there aren't any dynamic relocs in read-only sections nor
2226 R_386_GOTOFF relocation, then we can keep the dynamic relocs and
2227 avoid the copy reloc. This doesn't work on VxWorks, where we can
2228 not have dynamic relocations (other than copy and jump slot
2229 relocations) in an executable. */
23209a78 2230 if (ELIMINATE_COPY_RELOCS
d5597ebc 2231 && !eh->gotoff_ref
23209a78 2232 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2233 {
a23b6845
AM		 2234 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2235 {
2236 s = p->sec->output_section;
2237 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2238 break;
2239 }
2240
a23b6845
AM		 2241 if (p == NULL)
2242 {
f5385ebf 2243 h->non_got_ref = 0;
a23b6845
AM		 2244 return TRUE;
2245 }
ebe50bae
AM		 2246 }
2247
252b5132
RH		 2248 /* We must allocate the symbol in our .dynbss section, which will
2249 become part of the .bss section of the executable. There will be
2250 an entry for this symbol in the .dynsym section. The dynamic
2251 object will contain position independent code, so all references
2252 from the dynamic object to this symbol will go through the global
2253 offset table. The dynamic linker will use the .dynsym entry to
2254 determine the address it must put in the global offset table, so
2255 both the dynamic object and the regular object will refer to the
2256 same memory location for the variable. */
2257
252b5132
RH		 2258 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2259 copy the initial value out of the dynamic object and into the
0ac8d2ca 2260 runtime process image. */
1d7e9d18 2261 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2262 {
eea6121a 2263 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2264 h->needs_copy = 1;
252b5132
RH		 2265 }
2266
0ac8d2ca 2267 s = htab->sdynbss;
252b5132 2268
6cabe1ea 2269 return _bfd_elf_adjust_dynamic_copy (info, h, s);
252b5132
RH		 2270}
2271
6725bdbf 2272/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2273 dynamic relocs. */
6725bdbf 2274
b34976b6 2275static bfd_boolean
eb4ff4d6 2276elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2277{
2278 struct bfd_link_info *info;
2279 struct elf_i386_link_hash_table *htab;
5a15f56f 2280 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2281 struct elf_dyn_relocs *p;
25e762b9 2282 unsigned plt_entry_size;
6725bdbf 2283
e92d460e 2284 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2285 return TRUE;
6725bdbf 2286
cbe950e9 2287 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2288
6725bdbf
AM		 2289 info = (struct bfd_link_info *) inf;
2290 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2291 if (htab == NULL)
2292 return FALSE;
6725bdbf 2293
25e762b9
RM		 2294 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2295
dd7e64d4
L		 2296 /* We can't use the GOT PLT if pointer equality is needed since
2297 finish_dynamic_symbol won't clear symbol value and the dynamic
2298 linker won't update the GOT slot. We will get into an infinite
2299 loop at run-time. */
2300 if (htab->plt_got != NULL
2301 && h->type != STT_GNU_IFUNC
2302 && !h->pointer_equality_needed
2303 && h->plt.refcount > 0
2304 && h->got.refcount > 0)
2305 {
2306 /* Don't use the regular PLT if there are both GOT and GOTPLT
2307 reloctions. */
2308 h->plt.offset = (bfd_vma) -1;
2309
2310 /* Use the GOT PLT. */
2311 eh->plt_got.refcount = 1;
2312 }
2313
cbe950e9
L		 2314 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2315 here if it is defined and referenced in a non-shared object. */
2316 if (h->type == STT_GNU_IFUNC
2317 && h->def_regular)
25e762b9 2318 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
7b70956d
WN		 2319 plt_entry_size,
2320 plt_entry_size, 4);
cbe950e9 2321 else if (htab->elf.dynamic_sections_created
dd7e64d4 2322 && (h->plt.refcount > 0 || eh->plt_got.refcount > 0))
6725bdbf 2323 {
dd7e64d4
L		 2324 bfd_boolean use_plt_got = eh->plt_got.refcount > 0;
2325
5a15f56f
AM		 2326 /* Make sure this symbol is output as a dynamic symbol.
2327 Undefined weak syms won't yet be marked as dynamic. */
2328 if (h->dynindx == -1
f5385ebf 2329 && !h->forced_local)
5a15f56f 2330 {
c152c796 2331 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2332 return FALSE;
5a15f56f
AM		 2333 }
2334
4e795f50
AM		 2335 if (info->shared
2336 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2337 {
6de2ae4a 2338 asection *s = htab->elf.splt;
dd7e64d4 2339 asection *got_s = htab->plt_got;
6725bdbf 2340
ced53ee5
AM		 2341 /* If this is the first .plt entry, make room for the special
2342 first entry. */
eea6121a 2343 if (s->size == 0)
bb81b736 2344 s->size = plt_entry_size;
6725bdbf 2345
dd7e64d4
L		 2346 if (use_plt_got)
2347 eh->plt_got.offset = got_s->size;
2348 else
2349 h->plt.offset = s->size;
6725bdbf 2350
ced53ee5
AM		 2351 /* If this symbol is not defined in a regular file, and we are
2352 not generating a shared library, then set the symbol to this
2353 location in the .plt. This is required to make function
2354 pointers compare as equal between the normal executable and
2355 the shared library. */
2356 if (! info->shared
f5385ebf 2357 && !h->def_regular)
ced53ee5 2358 {
dd7e64d4
L		 2359 if (use_plt_got)
2360 {
2361 /* We need to make a call to the entry of the GOT PLT
2362 instead of regular PLT entry. */
2363 h->root.u.def.section = got_s;
2364 h->root.u.def.value = eh->plt_got.offset;
2365 }
2366 else
2367 {
2368 h->root.u.def.section = s;
2369 h->root.u.def.value = h->plt.offset;
2370 }
ced53ee5 2371 }
6725bdbf 2372
ced53ee5 2373 /* Make room for this entry. */
dd7e64d4
L		 2374 if (use_plt_got)
2375 got_s->size += sizeof (elf_i386_got_plt_entry);
2376 else
2377 {
2378 s->size += plt_entry_size;
6725bdbf 2379
dd7e64d4
L		 2380 /* We also need to make an entry in the .got.plt section,
2381 which will be placed in the .got section by the linker
2382 script. */
2383 htab->elf.sgotplt->size += 4;
6725bdbf 2384
dd7e64d4
L		 2385 /* We also need to make an entry in the .rel.plt section. */
2386 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2387 htab->elf.srelplt->reloc_count++;
2388 }
eac338cf 2389
23209a78
RM		 2390 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
2391 && !info->shared)
eac338cf
PB		 2392 {
2393 /* VxWorks has a second set of relocations for each PLT entry
2394 in executables. They go in a separate relocation section,
2395 which is processed by the kernel loader. */
2396
2397 /* There are two relocations for the initial PLT entry: an
2398 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2399 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2400
25e762b9 2401 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2402 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2403
2404 /* There are two extra relocations for each subsequent PLT entry:
2405 an R_386_32 relocation for the GOT entry, and an R_386_32
2406 relocation for the PLT entry. */
2407
2408 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2409 }
6725bdbf 2410 }
ced53ee5
AM		 2411 else
2412 {
51b64d56 2413 h->plt.offset = (bfd_vma) -1;
f5385ebf 2414 h->needs_plt = 0;
ced53ee5 2415 }
6725bdbf
AM		 2416 }
2417 else
2418 {
51b64d56 2419 h->plt.offset = (bfd_vma) -1;
f5385ebf 2420 h->needs_plt = 0;
6725bdbf
AM		 2421 }
2422
67a4f2b7
AO		 2423 eh->tlsdesc_got = (bfd_vma) -1;
2424
37e55690 2425 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2426 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2427 if (h->got.refcount > 0
1d85728f 2428 && info->executable
13ae64f3 2429 && h->dynindx == -1
37e55690 2430 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2431 h->got.offset = (bfd_vma) -1;
13ae64f3 2432 else if (h->got.refcount > 0)
6725bdbf 2433 {
0ac8d2ca 2434 asection *s;
b34976b6 2435 bfd_boolean dyn;
13ae64f3 2436 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2437
5a15f56f
AM		 2438 /* Make sure this symbol is output as a dynamic symbol.
2439 Undefined weak syms won't yet be marked as dynamic. */
2440 if (h->dynindx == -1
f5385ebf 2441 && !h->forced_local)
5a15f56f 2442 {
c152c796 2443 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2444 return FALSE;
5a15f56f
AM		 2445 }
2446
6de2ae4a 2447 s = htab->elf.sgot;
67a4f2b7
AO		 2448 if (GOT_TLS_GDESC_P (tls_type))
2449 {
6de2ae4a 2450 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2451 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2452 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2453 h->got.offset = (bfd_vma) -2;
2454 }
2455 if (! GOT_TLS_GDESC_P (tls_type)
2456 || GOT_TLS_GD_P (tls_type))
2457 {
2458 h->got.offset = s->size;
2459 s->size += 4;
2460 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2461 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2462 s->size += 4;
2463 }
ebe50bae 2464 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2465 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2466 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2467 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2468 need two), R_386_TLS_GD needs one if local symbol and two if
2469 global. */
2470 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2471 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2472 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2473 || (tls_type & GOT_TLS_IE))
6de2ae4a 2474 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2475 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2476 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2477 else if (! GOT_TLS_GDESC_P (tls_type)
2478 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2479 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 2480 && (info->shared
2481 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2482 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2483 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2484 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2485 }
2486 else
51b64d56 2487 h->got.offset = (bfd_vma) -1;
6725bdbf 2488
5a15f56f 2489 if (eh->dyn_relocs == NULL)
b34976b6 2490 return TRUE;
5a15f56f 2491
0c715baa
AM		 2492 /* In the shared -Bsymbolic case, discard space allocated for
2493 dynamic pc-relative relocs against symbols which turn out to be
2494 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2495 space for pc-relative relocs that have become local due to symbol
2496 visibility changes. */
0c715baa
AM		 2497
2498 if (info->shared)
5a15f56f 2499 {
09695f56
AM		 2500 /* The only reloc that uses pc_count is R_386_PC32, which will
2501 appear on a call or on something like ".long foo - .". We
2502 want calls to protected symbols to resolve directly to the
2503 function rather than going via the plt. If people want
2504 function pointer comparisons to work as expected then they
2505 should avoid writing assembly like ".long foo - .". */
2506 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2507 {
e03a8ed8 2508 struct elf_dyn_relocs **pp;
0c715baa
AM		 2509
2510 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2511 {
c3ce498c
L		 2512 p->count -= p->pc_count;
2513 p->pc_count = 0;
0c715baa
AM		 2514 if (p->count == 0)
2515 *pp = p->next;
2516 else
2517 pp = &p->next;
2518 }
5a15f56f 2519 }
4e795f50 2520
23209a78 2521 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2522 {
e03a8ed8 2523 struct elf_dyn_relocs **pp;
3348747a
NS		 2524 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2525 {
2526 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2527 *pp = p->next;
2528 else
2529 pp = &p->next;
2530 }
2531 }
2532
4e795f50 2533 /* Also discard relocs on undefined weak syms with non-default
c353e543 2534 visibility. */
22d606e9 2535 if (eh->dyn_relocs != NULL
c353e543 2536 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2537 {
2538 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2539 eh->dyn_relocs = NULL;
2540
2541 /* Make sure undefined weak symbols are output as a dynamic
2542 symbol in PIEs. */
2543 else if (h->dynindx == -1
2544 && !h->forced_local)
2545 {
2546 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2547 return FALSE;
2548 }
2549 }
0c715baa 2550 }
a23b6845 2551 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2552 {
2553 /* For the non-shared case, discard space for relocs against
2554 symbols which turn out to need copy relocs or are not
2555 dynamic. */
2556
f5385ebf
AM		 2557 if (!h->non_got_ref
2558 && ((h->def_dynamic
2559 && !h->def_regular)
ebe50bae 2560 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2561 && (h->root.type == bfd_link_hash_undefweak
2562 || h->root.type == bfd_link_hash_undefined))))
2563 {
2564 /* Make sure this symbol is output as a dynamic symbol.
2565 Undefined weak syms won't yet be marked as dynamic. */
2566 if (h->dynindx == -1
f5385ebf 2567 && !h->forced_local)
0c715baa 2568 {
c152c796 2569 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2570 return FALSE;
0c715baa 2571 }
5a15f56f 2572
0c715baa
AM		 2573 /* If that succeeded, we know we'll be keeping all the
2574 relocs. */
2575 if (h->dynindx != -1)
2576 goto keep;
2577 }
2578
2579 eh->dyn_relocs = NULL;
2580
ec338859 2581 keep: ;
5a15f56f
AM		 2582 }
2583
0c715baa
AM		 2584 /* Finally, allocate space. */
2585 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2586 {
e7c33416
NC		 2587 asection *sreloc;
2588
cbe950e9 2589 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2590
2591 BFD_ASSERT (sreloc != NULL);
eea6121a 2592 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2593 }
2594
b34976b6 2595 return TRUE;
6725bdbf
AM		 2596}
2597
c25bc9fc
L		 2598/* Allocate space in .plt, .got and associated reloc sections for
2599 local dynamic relocs. */
2600
2601static bfd_boolean
2602elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2603{
2604 struct elf_link_hash_entry *h
2605 = (struct elf_link_hash_entry *) *slot;
2606
2607 if (h->type != STT_GNU_IFUNC
2608 || !h->def_regular
2609 || !h->ref_regular
2610 || !h->forced_local
2611 || h->root.type != bfd_link_hash_defined)
2612 abort ();
2613
2614 return elf_i386_allocate_dynrelocs (h, inf);
2615}
2616
0c715baa
AM		 2617/* Find any dynamic relocs that apply to read-only sections. */
2618
b34976b6 2619static bfd_boolean
eb4ff4d6 2620elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2621{
2622 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2623 struct elf_dyn_relocs *p;
0c715baa 2624
aa715242
L		 2625 /* Skip local IFUNC symbols. */
2626 if (h->forced_local && h->type == STT_GNU_IFUNC)
2627 return TRUE;
2628
0c715baa
AM		 2629 eh = (struct elf_i386_link_hash_entry *) h;
2630 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2631 {
2632 asection *s = p->sec->output_section;
2633
2634 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2635 {
2636 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2637
2638 info->flags |= DF_TEXTREL;
2639
1952c5cd
L		 2640 if ((info->warn_shared_textrel && info->shared)
2641 || info->error_textrel)
2642 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L		 2643 p->sec->owner, h->root.root.string,
2644 p->sec);
2645
0c715baa 2646 /* Not an error, just cut short the traversal. */
b34976b6 2647 return FALSE;
0c715baa
AM		 2648 }
2649 }
b34976b6 2650 return TRUE;
0c715baa
AM		 2651}
2652
daa67607
L		 2653/* Convert
2654 mov foo@GOT(%reg), %reg
2655 to
2656 lea foo@GOTOFF(%reg), %reg
2657 with the local symbol, foo. */
2658
2659static bfd_boolean
2660elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
2661 struct bfd_link_info *link_info)
2662{
2663 Elf_Internal_Shdr *symtab_hdr;
2664 Elf_Internal_Rela *internal_relocs;
2665 Elf_Internal_Rela *irel, *irelend;
2666 bfd_byte *contents;
2667 struct elf_i386_link_hash_table *htab;
2668 bfd_boolean changed_contents;
2669 bfd_boolean changed_relocs;
2670 bfd_signed_vma *local_got_refcounts;
2671
2672 /* Don't even try to convert non-ELF outputs. */
2673 if (!is_elf_hash_table (link_info->hash))
2674 return FALSE;
2675
c1d11331 2676 /* Nothing to do if there is no need or no output. */
daa67607 2677 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
c1d11331 2678 || sec->need_convert_mov_to_lea == 0
c8831961 2679 || bfd_is_abs_section (sec->output_section))
daa67607
L		 2680 return TRUE;
2681
2682 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2683
2684 /* Load the relocations for this section. */
2685 internal_relocs = (_bfd_elf_link_read_relocs
2686 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2687 link_info->keep_memory));
2688 if (internal_relocs == NULL)
2689 return FALSE;
2690
2691 htab = elf_i386_hash_table (link_info);
2692 changed_contents = FALSE;
2693 changed_relocs = FALSE;
2694 local_got_refcounts = elf_local_got_refcounts (abfd);
2695
2696 /* Get the section contents. */
2697 if (elf_section_data (sec)->this_hdr.contents != NULL)
2698 contents = elf_section_data (sec)->this_hdr.contents;
2699 else
2700 {
2701 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2702 goto error_return;
2703 }
2704
2705 irelend = internal_relocs + sec->reloc_count;
2706 for (irel = internal_relocs; irel < irelend; irel++)
2707 {
2708 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2709 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2710 unsigned int indx;
2711 struct elf_link_hash_entry *h;
2712
2713 if (r_type != R_386_GOT32)
2714 continue;
2715
2716 /* Get the symbol referred to by the reloc. */
2717 if (r_symndx < symtab_hdr->sh_info)
2718 {
2719 Elf_Internal_Sym *isym;
2720
2721 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2722 abfd, r_symndx);
2723
2724 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2725 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
5697705a 2726 && irel->r_offset >= 2
4b71eec6 2727 && bfd_get_8 (abfd, contents + irel->r_offset - 2) == 0x8b)
daa67607 2728 {
4b71eec6 2729 bfd_put_8 (abfd, 0x8d, contents + irel->r_offset - 2);
daa67607
L		 2730 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2731 if (local_got_refcounts != NULL
2732 && local_got_refcounts[r_symndx] > 0)
2733 local_got_refcounts[r_symndx] -= 1;
2734 changed_contents = TRUE;
2735 changed_relocs = TRUE;
2736 }
2737 continue;
2738 }
2739
2740 indx = r_symndx - symtab_hdr->sh_info;
2741 h = elf_sym_hashes (abfd)[indx];
2742 BFD_ASSERT (h != NULL);
2743
2744 while (h->root.type == bfd_link_hash_indirect
2745 || h->root.type == bfd_link_hash_warning)
2746 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2747
3f65f599
L		 2748 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
2749 optimizing _DYNAMIC since ld.so may use its link-time address. */
daa67607
L		 2750 if (h->def_regular
2751 && h->type != STT_GNU_IFUNC
9637f6ef 2752 && h != htab->elf.hdynamic
daa67607 2753 && SYMBOL_REFERENCES_LOCAL (link_info, h)
5697705a 2754 && irel->r_offset >= 2
4b71eec6 2755 && bfd_get_8 (abfd, contents + irel->r_offset - 2) == 0x8b)
daa67607 2756 {
4b71eec6 2757 bfd_put_8 (abfd, 0x8d, contents + irel->r_offset - 2);
daa67607
L		 2758 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2759 if (h->got.refcount > 0)
2760 h->got.refcount -= 1;
2761 changed_contents = TRUE;
2762 changed_relocs = TRUE;
2763 }
2764 }
2765
2766 if (contents != NULL
2767 && elf_section_data (sec)->this_hdr.contents != contents)
2768 {
2769 if (!changed_contents && !link_info->keep_memory)
2770 free (contents);
2771 else
2772 {
2773 /* Cache the section contents for elf_link_input_bfd. */
2774 elf_section_data (sec)->this_hdr.contents = contents;
2775 }
2776 }
2777
2778 if (elf_section_data (sec)->relocs != internal_relocs)
2779 {
2780 if (!changed_relocs)
2781 free (internal_relocs);
2782 else
2783 elf_section_data (sec)->relocs = internal_relocs;
2784 }
2785
2786 return TRUE;
2787
2788 error_return:
2789 if (contents != NULL
2790 && elf_section_data (sec)->this_hdr.contents != contents)
2791 free (contents);
2792 if (internal_relocs != NULL
2793 && elf_section_data (sec)->relocs != internal_relocs)
2794 free (internal_relocs);
2795 return FALSE;
2796}
2797
252b5132
RH		 2798/* Set the sizes of the dynamic sections. */
2799
b34976b6 2800static bfd_boolean
23209a78 2801elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2802{
6725bdbf 2803 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2804 bfd *dynobj;
2805 asection *s;
b34976b6 2806 bfd_boolean relocs;
0c715baa 2807 bfd *ibfd;
252b5132 2808
6725bdbf 2809 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2810 if (htab == NULL)
2811 return FALSE;
ebe50bae 2812 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2813 if (dynobj == NULL)
2814 abort ();
252b5132 2815
ebe50bae 2816 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2817 {
2818 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2819 if (info->executable)
252b5132 2820 {
3d4d4302 2821 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 2822 if (s == NULL)
2823 abort ();
eea6121a 2824 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2825 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2826 }
161d71a6 2827 }
6725bdbf 2828
0c715baa
AM		 2829 /* Set up .got offsets for local syms, and space for local dynamic
2830 relocs. */
c72f2fb2 2831 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
161d71a6
L		 2832 {
2833 bfd_signed_vma *local_got;
2834 bfd_signed_vma *end_local_got;
13ae64f3 2835 char *local_tls_type;
67a4f2b7 2836 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2837 bfd_size_type locsymcount;
2838 Elf_Internal_Shdr *symtab_hdr;
2839 asection *srel;
6725bdbf 2840
0ffa91dd 2841 if (! is_i386_elf (ibfd))
161d71a6 2842 continue;
6725bdbf 2843
0c715baa
AM		 2844 for (s = ibfd->sections; s != NULL; s = s->next)
2845 {
e03a8ed8 2846 struct elf_dyn_relocs *p;
0c715baa 2847
daa67607
L		 2848 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2849 return FALSE;
2850
e03a8ed8 2851 for (p = ((struct elf_dyn_relocs *)
e81d3500 2852 elf_section_data (s)->local_dynrel);
ec338859
AM		 2853 p != NULL;
2854 p = p->next)
0c715baa 2855 {
ec338859
AM		 2856 if (!bfd_is_abs_section (p->sec)
2857 && bfd_is_abs_section (p->sec->output_section))
2858 {
2859 /* Input section has been discarded, either because
2860 it is a copy of a linkonce section or due to
2861 linker script /DISCARD/, so we'll be discarding
2862 the relocs too. */
2863 }
23209a78 2864 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2865 && strcmp (p->sec->output_section->name,
2866 ".tls_vars") == 0)
2867 {
2868 /* Relocations in vxworks .tls_vars sections are
2869 handled specially by the loader. */
2870 }
248866a8 2871 else if (p->count != 0)
ec338859
AM		 2872 {
2873 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2874 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2875 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2876 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2877 {
2878 info->flags |= DF_TEXTREL;
1952c5cd
L		 2879 if ((info->warn_shared_textrel && info->shared)
2880 || info->error_textrel)
2881 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 2882 p->sec->owner, p->sec);
b70321a2 2883 }
ec338859 2884 }
0c715baa
AM		 2885 }
2886 }
2887
2888 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2889 if (!local_got)
2890 continue;
6725bdbf 2891
0ffa91dd 2892 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2893 locsymcount = symtab_hdr->sh_info;
2894 end_local_got = local_got + locsymcount;
13ae64f3 2895 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2896 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2897 s = htab->elf.sgot;
2898 srel = htab->elf.srelgot;
67a4f2b7
AO		 2899 for (; local_got < end_local_got;
2900 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2901 {
67a4f2b7 2902 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2903 if (*local_got > 0)
6725bdbf 2904 {
67a4f2b7
AO		 2905 if (GOT_TLS_GDESC_P (*local_tls_type))
2906 {
6de2ae4a 2907 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2908 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2909 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2910 *local_got = (bfd_vma) -2;
2911 }
2912 if (! GOT_TLS_GDESC_P (*local_tls_type)
2913 || GOT_TLS_GD_P (*local_tls_type))
2914 {
2915 *local_got = s->size;
2916 s->size += 4;
2917 if (GOT_TLS_GD_P (*local_tls_type)
2918 || *local_tls_type == GOT_TLS_IE_BOTH)
2919 s->size += 4;
2920 }
13ae64f3 2921 if (info->shared
67a4f2b7 2922 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2923 || (*local_tls_type & GOT_TLS_IE))
2924 {
2925 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2926 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2927 else if (GOT_TLS_GD_P (*local_tls_type)
2928 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2929 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2930 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2931 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2932 }
6725bdbf 2933 }
161d71a6
L		 2934 else
2935 *local_got = (bfd_vma) -1;
6725bdbf 2936 }
252b5132 2937 }
6725bdbf 2938
13ae64f3
JJ		 2939 if (htab->tls_ldm_got.refcount > 0)
2940 {
2941 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2942 relocs. */
6de2ae4a
L		 2943 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2944 htab->elf.sgot->size += 8;
2945 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2946 }
2947 else
2948 htab->tls_ldm_got.offset = -1;
2949
0c715baa
AM		 2950 /* Allocate global sym .plt and .got entries, and space for global
2951 sym dynamic relocs. */
eb4ff4d6 2952 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2953
c25bc9fc
L		 2954 /* Allocate .plt and .got entries, and space for local symbols. */
2955 htab_traverse (htab->loc_hash_table,
2956 elf_i386_allocate_local_dynrelocs,
2957 info);
2958
67a4f2b7
AO		 2959 /* For every jump slot reserved in the sgotplt, reloc_count is
2960 incremented. However, when we reserve space for TLS descriptors,
2961 it's not incremented, so in order to compute the space reserved
2962 for them, it suffices to multiply the reloc count by the jump
e1f98742 2963 slot size.
caa0075c 2964
e1f98742
L		 2965 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2966 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2967 if (htab->elf.srelplt)
e1f98742
L		 2968 {
2969 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2970 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2971 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2972 }
2973 else if (htab->elf.irelplt)
2974 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2975
67a4f2b7 2976
a7b16ceb
L		 2977 if (htab->elf.sgotplt)
2978 {
2979 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2980 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 2981 if ((htab->elf.hgot == NULL
2982 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 2983 && (htab->elf.sgotplt->size
2984 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2985 && (htab->elf.splt == NULL
2986 || htab->elf.splt->size == 0)
2987 && (htab->elf.sgot == NULL
2988 || htab->elf.sgot->size == 0)
2989 && (htab->elf.iplt == NULL
2990 || htab->elf.iplt->size == 0)
2991 && (htab->elf.igotplt == NULL
2992 || htab->elf.igotplt->size == 0))
2993 htab->elf.sgotplt->size = 0;
2994 }
2995
9a2a56cc
AM		 2996
2997 if (htab->plt_eh_frame != NULL
2998 && htab->elf.splt != NULL
2999 && htab->elf.splt->size != 0
3000 && !bfd_is_abs_section (htab->elf.splt->output_section)
3001 && _bfd_elf_eh_frame_present (info))
3002 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
3003
5a15f56f
AM		 3004 /* We now have determined the sizes of the various dynamic sections.
3005 Allocate memory for them. */
b34976b6 3006 relocs = FALSE;
252b5132
RH		 3007 for (s = dynobj->sections; s != NULL; s = s->next)
3008 {
eac338cf
PB		 3009 bfd_boolean strip_section = TRUE;
3010
252b5132
RH		 3011 if ((s->flags & SEC_LINKER_CREATED) == 0)
3012 continue;
3013
6de2ae4a 3014 if (s == htab->elf.splt
9a2a56cc 3015 || s == htab->elf.sgot)
252b5132 3016 {
6725bdbf
AM		 3017 /* Strip this section if we don't need it; see the
3018 comment below. */
eac338cf
PB		 3019 /* We'd like to strip these sections if they aren't needed, but if
3020 we've exported dynamic symbols from them we must leave them.
3021 It's too late to tell BFD to get rid of the symbols. */
3022
7325306f 3023 if (htab->elf.hplt != NULL)
eac338cf 3024 strip_section = FALSE;
252b5132 3025 }
9a2a56cc
AM		 3026 else if (s == htab->elf.sgotplt
3027 || s == htab->elf.iplt
3028 || s == htab->elf.igotplt
dd7e64d4 3029 || s == htab->plt_got
9a2a56cc
AM		 3030 || s == htab->plt_eh_frame
3031 || s == htab->sdynbss)
3032 {
3033 /* Strip these too. */
3034 }
0112cd26 3035 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 3036 {
6de2ae4a
L		 3037 if (s->size != 0
3038 && s != htab->elf.srelplt
3039 && s != htab->srelplt2)
b34976b6 3040 relocs = TRUE;
252b5132 3041
0ac8d2ca
AM		 3042 /* We use the reloc_count field as a counter if we need
3043 to copy relocs into the output file. */
5ae0bfb6 3044 s->reloc_count = 0;
252b5132 3045 }
6725bdbf 3046 else
252b5132
RH		 3047 {
3048 /* It's not one of our sections, so don't allocate space. */
3049 continue;
3050 }
3051
c456f082 3052 if (s->size == 0)
252b5132 3053 {
0ac8d2ca
AM		 3054 /* If we don't need this section, strip it from the
3055 output file. This is mostly to handle .rel.bss and
3056 .rel.plt. We must create both sections in
3057 create_dynamic_sections, because they must be created
3058 before the linker maps input sections to output
3059 sections. The linker does that before
3060 adjust_dynamic_symbol is called, and it is that
3061 function which decides whether anything needs to go
3062 into these sections. */
c456f082
AM		 3063 if (strip_section)
3064 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3065 continue;
3066 }
3067
c456f082
AM		 3068 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3069 continue;
3070
f69da49f
AM		 3071 /* Allocate memory for the section contents. We use bfd_zalloc
3072 here in case unused entries are not reclaimed before the
3073 section's contents are written out. This should not happen,
3074 but this way if it does, we get a R_386_NONE reloc instead
3075 of garbage. */
a50b1753 3076 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 3077 if (s->contents == NULL)
b34976b6 3078 return FALSE;
252b5132
RH		 3079 }
3080
e41b3a13 3081 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3082 && htab->plt_eh_frame->contents != NULL)
3083 {
3084 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
3085 sizeof (elf_i386_eh_frame_plt));
3086 bfd_put_32 (dynobj, htab->elf.splt->size,
3087 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3088 }
e41b3a13 3089
ebe50bae 3090 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3091 {
3092 /* Add some entries to the .dynamic section. We fill in the
3093 values later, in elf_i386_finish_dynamic_sections, but we
3094 must add the entries now so that we get the correct size for
3095 the .dynamic section. The DT_DEBUG entry is filled in by the
3096 dynamic linker and used by the debugger. */
dc810e39 3097#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3098 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3099
36af4a4e 3100 if (info->executable)
252b5132 3101 {
dc810e39 3102 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3103 return FALSE;
252b5132
RH		 3104 }
3105
6de2ae4a 3106 if (htab->elf.splt->size != 0)
252b5132 3107 {
dc810e39
AM		 3108 if (!add_dynamic_entry (DT_PLTGOT, 0)
3109 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3110 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3111 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3112 return FALSE;
252b5132
RH		 3113 }
3114
3115 if (relocs)
3116 {
dc810e39
AM		 3117 if (!add_dynamic_entry (DT_REL, 0)
3118 || !add_dynamic_entry (DT_RELSZ, 0)
3119 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3120 return FALSE;
252b5132 3121
0c715baa
AM		 3122 /* If any dynamic relocs apply to a read-only section,
3123 then we need a DT_TEXTREL entry. */
248866a8 3124 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3125 elf_link_hash_traverse (&htab->elf,
3126 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3127
3128 if ((info->flags & DF_TEXTREL) != 0)
3129 {
3130 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3131 return FALSE;
0c715baa 3132 }
252b5132 3133 }
23209a78 3134 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3135 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3136 return FALSE;
252b5132 3137 }
dc810e39 3138#undef add_dynamic_entry
252b5132 3139
b34976b6 3140 return TRUE;
252b5132
RH		 3141}
3142
67a4f2b7
AO		 3143static bfd_boolean
3144elf_i386_always_size_sections (bfd *output_bfd,
3145 struct bfd_link_info *info)
3146{
3147 asection *tls_sec = elf_hash_table (info)->tls_sec;
3148
3149 if (tls_sec)
3150 {
3151 struct elf_link_hash_entry *tlsbase;
3152
3153 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3154 "_TLS_MODULE_BASE_",
3155 FALSE, FALSE, FALSE);
3156
3157 if (tlsbase && tlsbase->type == STT_TLS)
3158 {
4dfe6ac6 3159 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3160 struct bfd_link_hash_entry *bh = NULL;
3161 const struct elf_backend_data *bed
3162 = get_elf_backend_data (output_bfd);
3163
4dfe6ac6
NC		 3164 htab = elf_i386_hash_table (info);
3165 if (htab == NULL)
3166 return FALSE;
3167
67a4f2b7
AO		 3168 if (!(_bfd_generic_link_add_one_symbol
3169 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3170 tls_sec, 0, NULL, FALSE,
3171 bed->collect, &bh)))
3172 return FALSE;
9f03412a 3173
4dfe6ac6 3174 htab->tls_module_base = bh;
9f03412a 3175
67a4f2b7
AO		 3176 tlsbase = (struct elf_link_hash_entry *)bh;
3177 tlsbase->def_regular = 1;
3178 tlsbase->other = STV_HIDDEN;
576fa883 3179 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3180 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3181 }
3182 }
3183
3184 return TRUE;
3185}
3186
38701953
AM		 3187/* Set the correct type for an x86 ELF section. We do this by the
3188 section name, which is a hack, but ought to work. */
3189
b34976b6 3190static bfd_boolean
55fd94b0
AM		 3191elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3192 Elf_Internal_Shdr *hdr,
3193 asection *sec)
38701953 3194{
91d6fa6a 3195 const char *name;
38701953
AM		 3196
3197 name = bfd_get_section_name (abfd, sec);
3198
3199 /* This is an ugly, but unfortunately necessary hack that is
3200 needed when producing EFI binaries on x86. It tells
3201 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3202 containing ELF relocation info. We need this hack in order to
3203 be able to generate ELF binaries that can be translated into
3204 EFI applications (which are essentially COFF objects). Those
3205 files contain a COFF ".reloc" section inside an ELFNN object,
3206 which would normally cause BFD to segfault because it would
3207 attempt to interpret this section as containing relocation
3208 entries for section "oc". With this hack enabled, ".reloc"
3209 will be treated as a normal data section, which will avoid the
3210 segfault. However, you won't be able to create an ELFNN binary
3211 with a section named "oc" that needs relocations, but that's
3212 the kind of ugly side-effects you get when detecting section
3213 types based on their names... In practice, this limitation is
3214 unlikely to bite. */
3215 if (strcmp (name, ".reloc") == 0)
3216 hdr->sh_type = SHT_PROGBITS;
3217
b34976b6 3218 return TRUE;
38701953
AM		 3219}
3220
9f03412a
AO		 3221/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3222 executables. Rather than setting it to the beginning of the TLS
3223 section, we have to set it to the end. This function may be called
3224 multiple times, it is idempotent. */
3225
3226static void
eb4ff4d6 3227elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3228{
4dfe6ac6 3229 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3230 struct bfd_link_hash_entry *base;
3231
3232 if (!info->executable)
3233 return;
3234
4dfe6ac6
NC		 3235 htab = elf_i386_hash_table (info);
3236 if (htab == NULL)
3237 return;
9f03412a 3238
4dfe6ac6
NC		 3239 base = htab->tls_module_base;
3240 if (base == NULL)
9f03412a
AO		 3241 return;
3242
4dfe6ac6 3243 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3244}
3245
13ae64f3
JJ		 3246/* Return the base VMA address which should be subtracted from real addresses
3247 when resolving @dtpoff relocation.
3248 This is PT_TLS segment p_vaddr. */
3249
3250static bfd_vma
eb4ff4d6 3251elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3252{
e1918d23
AM		 3253 /* If tls_sec is NULL, we should have signalled an error already. */
3254 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3255 return 0;
e1918d23 3256 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3257}
3258
3259/* Return the relocation value for @tpoff relocation
3260 if STT_TLS virtual address is ADDRESS. */
3261
3262static bfd_vma
eb4ff4d6 3263elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3264{
e1918d23 3265 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3266 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3267 bfd_vma static_tls_size;
13ae64f3 3268
e1918d23
AM		 3269 /* If tls_sec is NULL, we should have signalled an error already. */
3270 if (htab->tls_sec == NULL)
6a30718d 3271 return 0;
7dc98aea
RO		 3272
3273 /* Consider special static TLS alignment requirements. */
3274 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3275 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3276}
3277
252b5132
RH		 3278/* Relocate an i386 ELF section. */
3279
b34976b6 3280static bfd_boolean
55fd94b0
AM		 3281elf_i386_relocate_section (bfd *output_bfd,
3282 struct bfd_link_info *info,
3283 bfd *input_bfd,
3284 asection *input_section,
3285 bfd_byte *contents,
3286 Elf_Internal_Rela *relocs,
3287 Elf_Internal_Sym *local_syms,
3288 asection **local_sections)
252b5132 3289{
6725bdbf 3290 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3291 Elf_Internal_Shdr *symtab_hdr;
3292 struct elf_link_hash_entry **sym_hashes;
3293 bfd_vma *local_got_offsets;
67a4f2b7 3294 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3295 Elf_Internal_Rela *rel;
3296 Elf_Internal_Rela *relend;
3348747a 3297 bfd_boolean is_vxworks_tls;
25e762b9 3298 unsigned plt_entry_size;
252b5132 3299
0ffa91dd 3300 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3301
6725bdbf 3302 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3303 if (htab == NULL)
3304 return FALSE;
0ffa91dd 3305 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3306 sym_hashes = elf_sym_hashes (input_bfd);
3307 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3308 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3309 /* We have to handle relocations in vxworks .tls_vars sections
3310 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3311 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3312 && info->shared
3348747a
NS		 3313 && !strcmp (input_section->output_section->name,
3314 ".tls_vars"));
252b5132 3315
eb4ff4d6 3316 elf_i386_set_tls_module_base (info);
9f03412a 3317
25e762b9
RM		 3318 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3319
252b5132
RH		 3320 rel = relocs;
3321 relend = relocs + input_section->reloc_count;
3322 for (; rel < relend; rel++)
3323 {
13ae64f3 3324 unsigned int r_type;
252b5132
RH		 3325 reloc_howto_type *howto;
3326 unsigned long r_symndx;
3327 struct elf_link_hash_entry *h;
dd7e64d4 3328 struct elf_i386_link_hash_entry *eh;
252b5132
RH		 3329 Elf_Internal_Sym *sym;
3330 asection *sec;
dd7e64d4 3331 bfd_vma off, offplt, plt_offset;
252b5132 3332 bfd_vma relocation;
b34976b6 3333 bfd_boolean unresolved_reloc;
252b5132 3334 bfd_reloc_status_type r;
1b452ec6 3335 unsigned int indx;
13ae64f3 3336 int tls_type;
1788fc08 3337 bfd_vma st_size;
dd7e64d4 3338 asection *resolved_plt;
252b5132
RH		 3339
3340 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3341 if (r_type == R_386_GNU_VTINHERIT
3342 || r_type == R_386_GNU_VTENTRY)
252b5132 3343 continue;
dc47f327 3344
55fd94b0 3345 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3346 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3347 >= R_386_ext - R_386_standard)
3348 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3349 >= R_386_irelative - R_386_ext))
252b5132 3350 {
6ba842b6 3351 (*_bfd_error_handler)
d003868e
AM		 3352 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3353 input_bfd, input_section, r_type);
252b5132 3354 bfd_set_error (bfd_error_bad_value);
b34976b6 3355 return FALSE;
252b5132 3356 }
1b452ec6 3357 howto = elf_howto_table + indx;
252b5132
RH		 3358
3359 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3360 h = NULL;
3361 sym = NULL;
3362 sec = NULL;
b34976b6 3363 unresolved_reloc = FALSE;
252b5132
RH		 3364 if (r_symndx < symtab_hdr->sh_info)
3365 {
3366 sym = local_syms + r_symndx;
3367 sec = local_sections[r_symndx];
3368 relocation = (sec->output_section->vma
3369 + sec->output_offset
3370 + sym->st_value);
1788fc08 3371 st_size = sym->st_size;
ab96bf03
AM		 3372
3373 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3374 && ((sec->flags & SEC_MERGE) != 0
3375 || (info->relocatable
3376 && sec->output_offset != 0)))
f8df10f4 3377 {
f8df10f4 3378 bfd_vma addend;
4a335f3d 3379 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3380
4a335f3d 3381 switch (howto->size)
f8df10f4 3382 {
4a335f3d
AM		 3383 case 0:
3384 addend = bfd_get_8 (input_bfd, where);
3385 if (howto->pc_relative)
3386 {
3387 addend = (addend ^ 0x80) - 0x80;
3388 addend += 1;
3389 }
3390 break;
3391 case 1:
3392 addend = bfd_get_16 (input_bfd, where);
3393 if (howto->pc_relative)
3394 {
3395 addend = (addend ^ 0x8000) - 0x8000;
3396 addend += 2;
3397 }
3398 break;
3399 case 2:
3400 addend = bfd_get_32 (input_bfd, where);
3401 if (howto->pc_relative)
3402 {
3403 addend = (addend ^ 0x80000000) - 0x80000000;
3404 addend += 4;
3405 }
3406 break;
3407 default:
3408 abort ();
f8df10f4
JJ		 3409 }
3410
ab96bf03
AM		 3411 if (info->relocatable)
3412 addend += sec->output_offset;
3413 else
3414 {
3415 asection *msec = sec;
3416 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3417 addend);
3418 addend -= relocation;
3419 addend += msec->output_section->vma + msec->output_offset;
3420 }
4a335f3d
AM		 3421
3422 switch (howto->size)
3423 {
3424 case 0:
16a10388 3425 /* FIXME: overflow checks. */
4a335f3d
AM		 3426 if (howto->pc_relative)
3427 addend -= 1;
3428 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3429 break;
3430 case 1:
3431 if (howto->pc_relative)
3432 addend -= 2;
3433 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3434 break;
3435 case 2:
3436 if (howto->pc_relative)
3437 addend -= 4;
3438 bfd_put_32 (input_bfd, addend, where);
3439 break;
3440 }
f8df10f4 3441 }
1f85278f
L		 3442 else if (!info->relocatable
3443 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3444 {
3445 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3446 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3447 FALSE);
c25bc9fc
L		 3448 if (h == NULL)
3449 abort ();
3450
23209a78 3451 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3452 h->root.u.def.value = sym->st_value;
3453 h->root.u.def.section = sec;
3454 }
252b5132
RH		 3455 }
3456 else
3457 {
3d540e93 3458 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3459 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3460
b2a8e766
AM		 3461 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3462 r_symndx, symtab_hdr, sym_hashes,
3463 h, sec, relocation,
62d887d4 3464 unresolved_reloc, warned, ignored);
1788fc08 3465 st_size = h->size;
252b5132
RH		 3466 }
3467
dbaa2011 3468 if (sec != NULL && discarded_section (sec))
0672748a 3469 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3470 rel, 1, relend, howto, 0, contents);
9635fe29 3471
ab96bf03
AM		 3472 if (info->relocatable)
3473 continue;
3474
cbe950e9
L		 3475 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3476 it here if it is defined in a non-shared object. */
3477 if (h != NULL
3478 && h->type == STT_GNU_IFUNC
3479 && h->def_regular)
3480 {
3481 asection *plt, *gotplt, *base_got;
3482 bfd_vma plt_index;
4c544807 3483 const char *name;
cbe950e9
L		 3484
3485 if ((input_section->flags & SEC_ALLOC) == 0
3486 || h->plt.offset == (bfd_vma) -1)
3487 abort ();
3488
3489 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3490 if (htab->elf.splt != NULL)
cbe950e9 3491 {
6de2ae4a
L		 3492 plt = htab->elf.splt;
3493 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3494 }
3495 else
3496 {
6de2ae4a
L		 3497 plt = htab->elf.iplt;
3498 gotplt = htab->elf.igotplt;
cbe950e9
L		 3499 }
3500
3501 relocation = (plt->output_section->vma
3502 + plt->output_offset + h->plt.offset);
3503
3504 switch (r_type)
3505 {
3506 default:
4c544807
L		 3507 if (h->root.root.string)
3508 name = h->root.root.string;
3509 else
3510 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3511 NULL);
cbe950e9
L		 3512 (*_bfd_error_handler)
3513 (_("%B: relocation %s against STT_GNU_IFUNC "
3514 "symbol `%s' isn't handled by %s"), input_bfd,
3515 elf_howto_table[r_type].name,
4c544807 3516 name, __FUNCTION__);
cbe950e9
L		 3517 bfd_set_error (bfd_error_bad_value);
3518 return FALSE;
3519
3520 case R_386_32:
710ab287 3521 /* Generate dynamic relcoation only when there is a
c293fa49 3522 non-GOT reference in a shared object. */
710ab287
L		 3523 if (info->shared && h->non_got_ref)
3524 {
3525 Elf_Internal_Rela outrel;
710ab287
L		 3526 asection *sreloc;
3527 bfd_vma offset;
3528
c25bc9fc
L		 3529 /* Need a dynamic relocation to get the real function
3530 adddress. */
710ab287
L		 3531 offset = _bfd_elf_section_offset (output_bfd,
3532 info,
3533 input_section,
3534 rel->r_offset);
3535 if (offset == (bfd_vma) -1
3536 || offset == (bfd_vma) -2)
3537 abort ();
3538
3539 outrel.r_offset = (input_section->output_section->vma
3540 + input_section->output_offset
3541 + offset);
3542
3543 if (h->dynindx == -1
44c4ea11
L		 3544 || h->forced_local
3545 || info->executable)
710ab287
L		 3546 {
3547 /* This symbol is resolved locally. */
56b8aada
L		 3548 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3549 bfd_put_32 (output_bfd,
3550 (h->root.u.def.value
3551 + h->root.u.def.section->output_section->vma
3552 + h->root.u.def.section->output_offset),
3553 contents + offset);
710ab287
L		 3554 }
3555 else
56b8aada 3556 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3557
6de2ae4a 3558 sreloc = htab->elf.irelifunc;
59d6ffb2 3559 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3560
3561 /* If this reloc is against an external symbol, we
3562 do not want to fiddle with the addend. Otherwise,
3563 we need to include the symbol value so that it
3564 becomes an addend for the dynamic reloc. For an
3565 internal symbol, we have updated addend. */
56b8aada 3566 continue;
710ab287 3567 }
d59a60e9 3568 /* FALLTHROUGH */
cbe950e9
L		 3569 case R_386_PC32:
3570 case R_386_PLT32:
3571 goto do_relocation;
3572
3573 case R_386_GOT32:
6de2ae4a 3574 base_got = htab->elf.sgot;
cbe950e9
L		 3575 off = h->got.offset;
3576
7afd84dc 3577 if (base_got == NULL)
cbe950e9
L		 3578 abort ();
3579
7afd84dc 3580 if (off == (bfd_vma) -1)
cbe950e9 3581 {
7afd84dc
L		 3582 /* We can't use h->got.offset here to save state, or
3583 even just remember the offset, as finish_dynamic_symbol
3584 would use that as offset into .got. */
6bbec505 3585
6de2ae4a 3586 if (htab->elf.splt != NULL)
7afd84dc 3587 {
25e762b9 3588 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3589 off = (plt_index + 3) * 4;
6de2ae4a 3590 base_got = htab->elf.sgotplt;
7afd84dc 3591 }
cbe950e9
L		 3592 else
3593 {
25e762b9 3594 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3595 off = plt_index * 4;
6de2ae4a 3596 base_got = htab->elf.igotplt;
7afd84dc
L		 3597 }
3598
3599 if (h->dynindx == -1
3600 || h->forced_local
3601 || info->symbolic)
3602 {
3603 /* This references the local defitionion. We must
3604 initialize this entry in the global offset table.
3605 Since the offset must always be a multiple of 8,
3606 we use the least significant bit to record
3607 whether we have initialized it already.
3608
3609 When doing a dynamic link, we create a .rela.got
3610 relocation entry to initialize the value. This
3611 is done in the finish_dynamic_symbol routine. */
3612 if ((off & 1) != 0)
3613 off &= ~1;
3614 else
3615 {
3616 bfd_put_32 (output_bfd, relocation,
3617 base_got->contents + off);
3618 h->got.offset |= 1;
3619 }
cbe950e9 3620 }
cbe950e9 3621
7afd84dc 3622 relocation = off;
cbe950e9 3623
7afd84dc 3624 /* Adjust for static executables. */
6de2ae4a 3625 if (htab->elf.splt == NULL)
7afd84dc
L		 3626 relocation += gotplt->output_offset;
3627 }
3628 else
0018b0a3
L		 3629 {
3630 relocation = (base_got->output_section->vma
3631 + base_got->output_offset + off
3632 - gotplt->output_section->vma
3633 - gotplt->output_offset);
3634 /* Adjust for static executables. */
6de2ae4a 3635 if (htab->elf.splt == NULL)
0018b0a3
L		 3636 relocation += gotplt->output_offset;
3637 }
3638
cbe950e9
L		 3639 goto do_relocation;
3640
3641 case R_386_GOTOFF:
3642 relocation -= (gotplt->output_section->vma
3643 + gotplt->output_offset);
3644 goto do_relocation;
3645 }
3646 }
3647
252b5132
RH		 3648 switch (r_type)
3649 {
3650 case R_386_GOT32:
3651 /* Relocation is to the entry for this symbol in the global
3652 offset table. */
6de2ae4a 3653 if (htab->elf.sgot == NULL)
ffb2e45b 3654 abort ();
252b5132
RH		 3655
3656 if (h != NULL)
3657 {
b34976b6 3658 bfd_boolean dyn;
252b5132
RH		 3659
3660 off = h->got.offset;
ebe50bae 3661 dyn = htab->elf.dynamic_sections_created;
26e41594 3662 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3663 || (info->shared
586119b3 3664 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3665 || (ELF_ST_VISIBILITY (h->other)
3666 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3667 {
3668 /* This is actually a static link, or it is a
3669 -Bsymbolic link and the symbol is defined
3670 locally, or the symbol was forced to be local
3671 because of a version file. We must initialize
3672 this entry in the global offset table. Since the
3673 offset must always be a multiple of 4, we use the
3674 least significant bit to record whether we have
3675 initialized it already.
3676
3677 When doing a dynamic link, we create a .rel.got
3678 relocation entry to initialize the value. This
3679 is done in the finish_dynamic_symbol routine. */
3680 if ((off & 1) != 0)
3681 off &= ~1;
3682 else
3683 {
3684 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3685 htab->elf.sgot->contents + off);
252b5132
RH		 3686 h->got.offset |= 1;
3687 }
3688 }
8c694914 3689 else
b34976b6 3690 unresolved_reloc = FALSE;
252b5132
RH		 3691 }
3692 else
3693 {
ffb2e45b
AM		 3694 if (local_got_offsets == NULL)
3695 abort ();
252b5132
RH		 3696
3697 off = local_got_offsets[r_symndx];
3698
3699 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3700 the least significant bit to record whether we have
3701 already generated the necessary reloc. */
252b5132
RH		 3702 if ((off & 1) != 0)
3703 off &= ~1;
3704 else
3705 {
6725bdbf 3706 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3707 htab->elf.sgot->contents + off);
252b5132
RH		 3708
3709 if (info->shared)
3710 {
947216bf
AM		 3711 asection *s;
3712 Elf_Internal_Rela outrel;
252b5132 3713
6de2ae4a 3714 s = htab->elf.srelgot;
947216bf 3715 if (s == NULL)
ffb2e45b 3716 abort ();
252b5132 3717
6de2ae4a
L		 3718 outrel.r_offset = (htab->elf.sgot->output_section->vma
3719 + htab->elf.sgot->output_offset
252b5132
RH		 3720 + off);
3721 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 3722 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 3723 }
3724
3725 local_got_offsets[r_symndx] |= 1;
3726 }
252b5132
RH		 3727 }
3728
ffb2e45b
AM		 3729 if (off >= (bfd_vma) -2)
3730 abort ();
3731
6de2ae4a
L		 3732 relocation = htab->elf.sgot->output_section->vma
3733 + htab->elf.sgot->output_offset + off
3734 - htab->elf.sgotplt->output_section->vma
3735 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3736 break;
3737
3738 case R_386_GOTOFF:
3739 /* Relocation is relative to the start of the global offset
3740 table. */
3741
3d949995
L		 3742 /* Check to make sure it isn't a protected function or data
3743 symbol for shared library since it may not be local when
3744 used as function address or with copy relocation. We also
e3c0e327 3745 need to make sure that a symbol is referenced locally. */
d5597ebc 3746 if (!info->executable && h)
90f487df 3747 {
41bed6dd
L		 3748 if (!h->def_regular)
3749 {
3750 const char *v;
3751
3752 switch (ELF_ST_VISIBILITY (h->other))
3753 {
3754 case STV_HIDDEN:
3755 v = _("hidden symbol");
3756 break;
3757 case STV_INTERNAL:
3758 v = _("internal symbol");
3759 break;
3760 case STV_PROTECTED:
3761 v = _("protected symbol");
3762 break;
3763 default:
3764 v = _("symbol");
3765 break;
3766 }
3767
3768 (*_bfd_error_handler)
3769 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3770 input_bfd, v, h->root.root.string);
3771 bfd_set_error (bfd_error_bad_value);
3772 return FALSE;
3773 }
d5597ebc 3774 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
3d949995
L		 3775 && (h->type == STT_FUNC
3776 || h->type == STT_OBJECT)
41bed6dd
L		 3777 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3778 {
3779 (*_bfd_error_handler)
3d949995
L		 3780 (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
3781 input_bfd,
3782 h->type == STT_FUNC ? "function" : "data",
3783 h->root.root.string);
41bed6dd
L		 3784 bfd_set_error (bfd_error_bad_value);
3785 return FALSE;
3786 }
90f487df
L		 3787 }
3788
8c37241b
JJ		 3789 /* Note that sgot is not involved in this
3790 calculation. We always want the start of .got.plt. If we
3791 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3792 permitted by the ABI, we might have to change this
3793 calculation. */
6de2ae4a
L		 3794 relocation -= htab->elf.sgotplt->output_section->vma
3795 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3796 break;
3797
3798 case R_386_GOTPC:
3799 /* Use global offset table as symbol value. */
6de2ae4a
L		 3800 relocation = htab->elf.sgotplt->output_section->vma
3801 + htab->elf.sgotplt->output_offset;
b34976b6 3802 unresolved_reloc = FALSE;
252b5132
RH		 3803 break;
3804
3805 case R_386_PLT32:
3806 /* Relocation is to the entry for this symbol in the
3807 procedure linkage table. */
3808
dd5724d5 3809 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3810 without using the procedure linkage table. */
252b5132
RH		 3811 if (h == NULL)
3812 break;
3813
dd7e64d4
L		 3814 eh = (struct elf_i386_link_hash_entry *) h;
3815 if ((h->plt.offset == (bfd_vma) -1
3816 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 3817 || htab->elf.splt == NULL)
252b5132
RH		 3818 {
3819 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3820 happens when statically linking PIC code, or when
3821 using -Bsymbolic. */
252b5132
RH		 3822 break;
3823 }
3824
dd7e64d4
L		 3825 if (h->plt.offset != (bfd_vma) -1)
3826 {
3827 resolved_plt = htab->elf.splt;
3828 plt_offset = h->plt.offset;
3829 }
3830 else
3831 {
3832 resolved_plt = htab->plt_got;
3833 plt_offset = eh->plt_got.offset;
3834 }
3835
3836 relocation = (resolved_plt->output_section->vma
3837 + resolved_plt->output_offset
3838 + plt_offset);
b34976b6 3839 unresolved_reloc = FALSE;
252b5132
RH		 3840 break;
3841
1788fc08 3842 case R_386_SIZE32:
1788fc08
L		 3843 /* Set to symbol size. */
3844 relocation = st_size;
3845 /* Fall through. */
3846
252b5132
RH		 3847 case R_386_32:
3848 case R_386_PC32:
3348747a
NS		 3849 if ((input_section->flags & SEC_ALLOC) == 0
3850 || is_vxworks_tls)
ec338859
AM		 3851 break;
3852
12d0ee4a 3853 if ((info->shared
ef5aade5
L		 3854 && (h == NULL
3855 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3856 || h->root.type != bfd_link_hash_undefweak)
1788fc08 3857 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3858 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3859 || (ELIMINATE_COPY_RELOCS
3860 && !info->shared
12d0ee4a
AM		 3861 && h != NULL
3862 && h->dynindx != -1
f5385ebf
AM		 3863 && !h->non_got_ref
3864 && ((h->def_dynamic
3865 && !h->def_regular)
28d0b90e 3866 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3867 || h->root.type == bfd_link_hash_undefined)))
252b5132 3868 {
947216bf 3869 Elf_Internal_Rela outrel;
b34976b6 3870 bfd_boolean skip, relocate;
0c715baa 3871 asection *sreloc;
252b5132
RH		 3872
3873 /* When generating a shared object, these relocations
3874 are copied into the output file to be resolved at run
3875 time. */
3876
b34976b6
AM		 3877 skip = FALSE;
3878 relocate = FALSE;
252b5132 3879
c629eae0
JJ		 3880 outrel.r_offset =
3881 _bfd_elf_section_offset (output_bfd, info, input_section,
3882 rel->r_offset);
3883 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3884 skip = TRUE;
0bb2d96a 3885 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3886 skip = TRUE, relocate = TRUE;
252b5132
RH		 3887 outrel.r_offset += (input_section->output_section->vma
3888 + input_section->output_offset);
3889
3890 if (skip)
0bb2d96a 3891 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3892 else if (h != NULL
3893 && h->dynindx != -1
3894 && (r_type == R_386_PC32
3895 || !info->shared
55255dae 3896 || !SYMBOLIC_BIND (info, h)
f5385ebf 3897 || !h->def_regular))
0bb2d96a 3898 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3899 else
3900 {
5a15f56f 3901 /* This symbol is local, or marked to become local. */
b34976b6 3902 relocate = TRUE;
5a15f56f 3903 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3904 }
3905
cbe950e9 3906 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3907
62d78908
L		 3908 if (sreloc == NULL || sreloc->contents == NULL)
3909 {
3910 r = bfd_reloc_notsupported;
3911 goto check_relocation_error;
3912 }
0c715baa 3913
59d6ffb2 3914 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 3915
3916 /* If this reloc is against an external symbol, we do
3917 not want to fiddle with the addend. Otherwise, we
3918 need to include the symbol value so that it becomes
3919 an addend for the dynamic reloc. */
0f88be7a 3920 if (! relocate)
252b5132
RH		 3921 continue;
3922 }
252b5132
RH		 3923 break;
3924
37e55690 3925 case R_386_TLS_IE:
1d85728f 3926 if (!info->executable)
37e55690 3927 {
947216bf 3928 Elf_Internal_Rela outrel;
37e55690 3929 asection *sreloc;
37e55690
JJ		 3930
3931 outrel.r_offset = rel->r_offset
3932 + input_section->output_section->vma
3933 + input_section->output_offset;
3934 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3935 sreloc = elf_section_data (input_section)->sreloc;
3936 if (sreloc == NULL)
3937 abort ();
59d6ffb2 3938 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3939 }
3940 /* Fall through */
3941
13ae64f3 3942 case R_386_TLS_GD:
67a4f2b7
AO		 3943 case R_386_TLS_GOTDESC:
3944 case R_386_TLS_DESC_CALL:
13ae64f3 3945 case R_386_TLS_IE_32:
37e55690 3946 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3947 tls_type = GOT_UNKNOWN;
3948 if (h == NULL && local_got_offsets)
3949 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3950 else if (h != NULL)
142411ca 3951 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3952 if (tls_type == GOT_TLS_IE)
3953 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3954
3955 if (! elf_i386_tls_transition (info, input_bfd,
3956 input_section, contents,
3957 symtab_hdr, sym_hashes,
3958 &r_type, tls_type, rel,
4c544807 3959 relend, h, r_symndx))
142411ca 3960 return FALSE;
13ae64f3
JJ		 3961
3962 if (r_type == R_386_TLS_LE_32)
3963 {
82e51918 3964 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3965 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3966 {
142411ca 3967 unsigned int type;
13ae64f3
JJ		 3968 bfd_vma roff;
3969
3970 /* GD->LE transition. */
13ae64f3 3971 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3972 if (type == 0x04)
3973 {
3974 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3975 Change it into:
3976 movl %gs:0, %eax; subl $foo@tpoff, %eax
3977 (6 byte form of subl). */
13ae64f3
JJ		 3978 memcpy (contents + rel->r_offset - 3,
3979 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3980 roff = rel->r_offset + 5;
13ae64f3
JJ		 3981 }
3982 else
3983 {
142411ca
L		 3984 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3985 Change it into:
3986 movl %gs:0, %eax; subl $foo@tpoff, %eax
3987 (6 byte form of subl). */
3988 memcpy (contents + rel->r_offset - 2,
3989 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3990 roff = rel->r_offset + 6;
13ae64f3 3991 }
eb4ff4d6 3992 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3993 contents + roff);
a3fadc9a 3994 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 3995 rel++;
3996 continue;
3997 }
67a4f2b7
AO		 3998 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3999 {
4000 /* GDesc -> LE transition.
4001 It's originally something like:
4002 leal x@tlsdesc(%ebx), %eax
4003
4004 leal x@ntpoff, %eax
4005
4006 Registers other than %eax may be set up here. */
4007
142411ca 4008 unsigned int val;
67a4f2b7
AO		 4009 bfd_vma roff;
4010
67a4f2b7 4011 roff = rel->r_offset;
67a4f2b7 4012 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 4013
4014 /* Now modify the instruction as appropriate. */
4015 /* aoliva FIXME: remove the above and xor the byte
4016 below with 0x86. */
4017 bfd_put_8 (output_bfd, val ^ 0x86,
4018 contents + roff - 1);
eb4ff4d6 4019 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 4020 contents + roff);
4021 continue;
4022 }
4023 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4024 {
4025 /* GDesc -> LE transition.
4026 It's originally:
4027 call *(%eax)
4028 Turn it into:
142411ca 4029 xchg %ax,%ax */
67a4f2b7 4030
67a4f2b7 4031 bfd_vma roff;
6bbec505 4032
67a4f2b7 4033 roff = rel->r_offset;
10efb593 4034 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4035 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4036 continue;
4037 }
37e55690 4038 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 4039 {
142411ca 4040 unsigned int val;
13ae64f3
JJ		 4041
4042 /* IE->LE transition:
37e55690
JJ		 4043 Originally it can be one of:
4044 movl foo, %eax
4045 movl foo, %reg
4046 addl foo, %reg
4047 We change it into:
4048 movl $foo, %eax
4049 movl $foo, %reg
4050 addl $foo, %reg. */
37e55690 4051 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 4052 if (val == 0xa1)
4053 {
4054 /* movl foo, %eax. */
55fd94b0
AM		 4055 bfd_put_8 (output_bfd, 0xb8,
4056 contents + rel->r_offset - 1);
37e55690 4057 }
299bf759 4058 else
37e55690 4059 {
142411ca
L		 4060 unsigned int type;
4061
55fd94b0
AM		 4062 type = bfd_get_8 (input_bfd,
4063 contents + rel->r_offset - 2);
299bf759 4064 switch (type)
26e41594 4065 {
299bf759
L		 4066 case 0x8b:
4067 /* movl */
299bf759
L		 4068 bfd_put_8 (output_bfd, 0xc7,
4069 contents + rel->r_offset - 2);
4070 bfd_put_8 (output_bfd,
4071 0xc0 | ((val >> 3) & 7),
4072 contents + rel->r_offset - 1);
4073 break;
4074 case 0x03:
4075 /* addl */
299bf759
L		 4076 bfd_put_8 (output_bfd, 0x81,
4077 contents + rel->r_offset - 2);
4078 bfd_put_8 (output_bfd,
4079 0xc0 | ((val >> 3) & 7),
4080 contents + rel->r_offset - 1);
4081 break;
4082 default:
4083 BFD_FAIL ();
4084 break;
26e41594 4085 }
37e55690 4086 }
eb4ff4d6 4087 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4088 contents + rel->r_offset);
4089 continue;
4090 }
4091 else
4092 {
4093 unsigned int val, type;
4094
4095 /* {IE_32,GOTIE}->LE transition:
4096 Originally it can be one of:
13ae64f3 4097 subl foo(%reg1), %reg2
13ae64f3 4098 movl foo(%reg1), %reg2
37e55690 4099 addl foo(%reg1), %reg2
13ae64f3
JJ		 4100 We change it into:
4101 subl $foo, %reg2
37e55690
JJ		 4102 movl $foo, %reg2 (6 byte form)
4103 addl $foo, %reg2. */
13ae64f3
JJ		 4104 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4105 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4106 if (type == 0x8b)
4107 {
4108 /* movl */
13ae64f3
JJ		 4109 bfd_put_8 (output_bfd, 0xc7,
4110 contents + rel->r_offset - 2);
4111 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4112 contents + rel->r_offset - 1);
4113 }
4114 else if (type == 0x2b)
4115 {
4116 /* subl */
13ae64f3
JJ		 4117 bfd_put_8 (output_bfd, 0x81,
4118 contents + rel->r_offset - 2);
4119 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4120 contents + rel->r_offset - 1);
4121 }
37e55690
JJ		 4122 else if (type == 0x03)
4123 {
4124 /* addl */
4125 bfd_put_8 (output_bfd, 0x81,
4126 contents + rel->r_offset - 2);
4127 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4128 contents + rel->r_offset - 1);
4129 }
13ae64f3
JJ		 4130 else
4131 BFD_FAIL ();
37e55690 4132 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4133 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4134 contents + rel->r_offset);
4135 else
eb4ff4d6 4136 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4137 contents + rel->r_offset);
13ae64f3
JJ		 4138 continue;
4139 }
4140 }
4141
6de2ae4a 4142 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4143 abort ();
4144
4145 if (h != NULL)
67a4f2b7
AO		 4146 {
4147 off = h->got.offset;
4148 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4149 }
13ae64f3
JJ		 4150 else
4151 {
4152 if (local_got_offsets == NULL)
4153 abort ();
4154
4155 off = local_got_offsets[r_symndx];
67a4f2b7 4156 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4157 }
4158
4159 if ((off & 1) != 0)
4160 off &= ~1;
26e41594 4161 else
13ae64f3 4162 {
947216bf 4163 Elf_Internal_Rela outrel;
91d6fa6a 4164 int dr_type;
67a4f2b7 4165 asection *sreloc;
13ae64f3 4166
6de2ae4a 4167 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4168 abort ();
4169
67a4f2b7
AO		 4170 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4171
4172 if (GOT_TLS_GDESC_P (tls_type))
4173 {
59d6ffb2 4174 bfd_byte *loc;
67a4f2b7
AO		 4175 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4176 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4177 <= htab->elf.sgotplt->size);
4178 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4179 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4180 + offplt
4181 + htab->sgotplt_jump_table_size);
6de2ae4a 4182 sreloc = htab->elf.srelplt;
67a4f2b7 4183 loc = sreloc->contents;
5ae0bfb6
RS		 4184 loc += (htab->next_tls_desc_index++
4185 * sizeof (Elf32_External_Rel));
67a4f2b7 4186 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4187 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4188 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4189 if (indx == 0)
4190 {
4191 BFD_ASSERT (! unresolved_reloc);
4192 bfd_put_32 (output_bfd,
eb4ff4d6 4193 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4194 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4195 + htab->sgotplt_jump_table_size + 4);
4196 }
4197 else
4198 {
4199 bfd_put_32 (output_bfd, 0,
6de2ae4a 4200 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4201 + htab->sgotplt_jump_table_size + 4);
4202 }
4203 }
4204
6de2ae4a 4205 sreloc = htab->elf.srelgot;
67a4f2b7 4206
6de2ae4a
L		 4207 outrel.r_offset = (htab->elf.sgot->output_section->vma
4208 + htab->elf.sgot->output_offset + off);
13ae64f3 4209
67a4f2b7 4210 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4211 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4212 else if (GOT_TLS_GDESC_P (tls_type))
4213 goto dr_done;
37e55690
JJ		 4214 else if (tls_type == GOT_TLS_IE_POS)
4215 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4216 else
4217 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4218
37e55690 4219 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4220 bfd_put_32 (output_bfd,
4221 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4222 htab->elf.sgot->contents + off);
37e55690 4223 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4224 bfd_put_32 (output_bfd,
eb4ff4d6 4225 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4226 htab->elf.sgot->contents + off);
67a4f2b7 4227 else if (dr_type != R_386_TLS_DESC)
c366c25e 4228 bfd_put_32 (output_bfd, 0,
6de2ae4a 4229 htab->elf.sgot->contents + off);
13ae64f3 4230 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4231
59d6ffb2 4232 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4233
67a4f2b7 4234 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4235 {
4236 if (indx == 0)
4237 {
82e51918 4238 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4239 bfd_put_32 (output_bfd,
eb4ff4d6 4240 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4241 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4242 }
4243 else
4244 {
4245 bfd_put_32 (output_bfd, 0,
6de2ae4a 4246 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4247 outrel.r_info = ELF32_R_INFO (indx,
4248 R_386_TLS_DTPOFF32);
4249 outrel.r_offset += 4;
59d6ffb2 4250 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4251 }
4252 }
37e55690
JJ		 4253 else if (tls_type == GOT_TLS_IE_BOTH)
4254 {
4255 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4256 (indx == 0
4257 ? relocation - elf_i386_dtpoff_base (info)
4258 : 0),
6de2ae4a 4259 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4260 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4261 outrel.r_offset += 4;
59d6ffb2 4262 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4263 }
13ae64f3 4264
67a4f2b7 4265 dr_done:
13ae64f3
JJ		 4266 if (h != NULL)
4267 h->got.offset |= 1;
4268 else
4269 local_got_offsets[r_symndx] |= 1;
4270 }
4271
67a4f2b7
AO		 4272 if (off >= (bfd_vma) -2
4273 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4274 abort ();
67a4f2b7
AO		 4275 if (r_type == R_386_TLS_GOTDESC
4276 || r_type == R_386_TLS_DESC_CALL)
4277 {
4278 relocation = htab->sgotplt_jump_table_size + offplt;
4279 unresolved_reloc = FALSE;
4280 }
4281 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4282 {
6de2ae4a
L		 4283 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4284 + htab->elf.sgotplt->output_offset;
4285 relocation = htab->elf.sgot->output_section->vma
4286 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4287 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4288 && tls_type == GOT_TLS_IE_BOTH)
4289 relocation += 4;
4290 if (r_type == R_386_TLS_IE)
8c37241b 4291 relocation += g_o_t;
b34976b6 4292 unresolved_reloc = FALSE;
13ae64f3 4293 }
67a4f2b7 4294 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4295 {
4296 unsigned int val, type;
4297 bfd_vma roff;
4298
4299 /* GD->IE transition. */
13ae64f3 4300 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4301 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4302 if (type == 0x04)
4303 {
4304 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4305 Change it into:
4306 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4307 val >>= 3;
142411ca 4308 roff = rel->r_offset - 3;
13ae64f3
JJ		 4309 }
4310 else
4311 {
4312 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4313 Change it into:
4314 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4315 roff = rel->r_offset - 2;
4316 }
4317 memcpy (contents + roff,
4318 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4319 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4320 /* If foo is used only with foo@gotntpoff(%reg) and
4321 foo@indntpoff, but not with foo@gottpoff(%reg), change
4322 subl $foo@gottpoff(%reg), %eax
4323 into:
4324 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4325 if (tls_type == GOT_TLS_IE_POS)
4326 contents[roff + 6] = 0x03;
8c37241b 4327 bfd_put_32 (output_bfd,
6de2ae4a
L		 4328 htab->elf.sgot->output_section->vma
4329 + htab->elf.sgot->output_offset + off
4330 - htab->elf.sgotplt->output_section->vma
4331 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4332 contents + roff + 8);
4333 /* Skip R_386_PLT32. */
4334 rel++;
4335 continue;
4336 }
67a4f2b7
AO		 4337 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4338 {
4339 /* GDesc -> IE transition.
4340 It's originally something like:
4341 leal x@tlsdesc(%ebx), %eax
4342
4343 Change it to:
142411ca 4344 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4345 or:
4346 movl x@gottpoff(%ebx), %eax # before negl %eax
4347
4348 Registers other than %eax may be set up here. */
4349
67a4f2b7
AO		 4350 bfd_vma roff;
4351
4352 /* First, make sure it's a leal adding ebx to a 32-bit
4353 offset into any register, although it's probably
4354 almost always going to be eax. */
4355 roff = rel->r_offset;
67a4f2b7
AO		 4356
4357 /* Now modify the instruction as appropriate. */
4358 /* To turn a leal into a movl in the form we use it, it
4359 suffices to change the first byte from 0x8d to 0x8b.
4360 aoliva FIXME: should we decide to keep the leal, all
4361 we have to do is remove the statement below, and
4362 adjust the relaxation of R_386_TLS_DESC_CALL. */
4363 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4364
4365 if (tls_type == GOT_TLS_IE_BOTH)
4366 off += 4;
4367
4368 bfd_put_32 (output_bfd,
6de2ae4a
L		 4369 htab->elf.sgot->output_section->vma
4370 + htab->elf.sgot->output_offset + off
4371 - htab->elf.sgotplt->output_section->vma
4372 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4373 contents + roff);
4374 continue;
4375 }
4376 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4377 {
4378 /* GDesc -> IE transition.
4379 It's originally:
4380 call *(%eax)
4381
4382 Change it to:
142411ca 4383 xchg %ax,%ax
67a4f2b7
AO		 4384 or
4385 negl %eax
4386 depending on how we transformed the TLS_GOTDESC above.
4387 */
4388
67a4f2b7
AO		 4389 bfd_vma roff;
4390
67a4f2b7 4391 roff = rel->r_offset;
67a4f2b7
AO		 4392
4393 /* Now modify the instruction as appropriate. */
4394 if (tls_type != GOT_TLS_IE_NEG)
4395 {
10efb593
L		 4396 /* xchg %ax,%ax */
4397 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4398 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4399 }
4400 else
4401 {
4402 /* negl %eax */
4403 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4404 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4405 }
4406
4407 continue;
4408 }
4409 else
4410 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4411 break;
4412
4413 case R_386_TLS_LDM:
142411ca
L		 4414 if (! elf_i386_tls_transition (info, input_bfd,
4415 input_section, contents,
4416 symtab_hdr, sym_hashes,
4417 &r_type, GOT_UNKNOWN, rel,
4c544807 4418 relend, h, r_symndx))
142411ca 4419 return FALSE;
13ae64f3 4420
142411ca
L		 4421 if (r_type != R_386_TLS_LDM)
4422 {
13ae64f3 4423 /* LD->LE transition:
13ae64f3
JJ		 4424 leal foo(%reg), %eax; call ___tls_get_addr.
4425 We change it into:
4426 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4427 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4428 memcpy (contents + rel->r_offset - 2,
4429 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4430 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4431 rel++;
4432 continue;
4433 }
4434
6de2ae4a 4435 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4436 abort ();
4437
4438 off = htab->tls_ldm_got.offset;
4439 if (off & 1)
4440 off &= ~1;
4441 else
4442 {
947216bf 4443 Elf_Internal_Rela outrel;
13ae64f3 4444
6de2ae4a 4445 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4446 abort ();
4447
6de2ae4a
L		 4448 outrel.r_offset = (htab->elf.sgot->output_section->vma
4449 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4450
4451 bfd_put_32 (output_bfd, 0,
6de2ae4a 4452 htab->elf.sgot->contents + off);
13ae64f3 4453 bfd_put_32 (output_bfd, 0,
6de2ae4a 4454 htab->elf.sgot->contents + off + 4);
13ae64f3 4455 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4456 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4457 htab->tls_ldm_got.offset |= 1;
4458 }
6de2ae4a
L		 4459 relocation = htab->elf.sgot->output_section->vma
4460 + htab->elf.sgot->output_offset + off
4461 - htab->elf.sgotplt->output_section->vma
4462 - htab->elf.sgotplt->output_offset;
b34976b6 4463 unresolved_reloc = FALSE;
13ae64f3
JJ		 4464 break;
4465
4466 case R_386_TLS_LDO_32:
959b0961 4467 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4468 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4469 else
4470 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4471 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4472 break;
4473
4474 case R_386_TLS_LE_32:
13ae64f3 4475 case R_386_TLS_LE:
1d85728f 4476 if (!info->executable)
37e55690 4477 {
947216bf 4478 Elf_Internal_Rela outrel;
37e55690 4479 asection *sreloc;
37e55690
JJ		 4480
4481 outrel.r_offset = rel->r_offset
4482 + input_section->output_section->vma
4483 + input_section->output_offset;
4484 if (h != NULL && h->dynindx != -1)
4485 indx = h->dynindx;
4486 else
4487 indx = 0;
4488 if (r_type == R_386_TLS_LE_32)
4489 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4490 else
4491 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4492 sreloc = elf_section_data (input_section)->sreloc;
4493 if (sreloc == NULL)
4494 abort ();
59d6ffb2 4495 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4496 if (indx)
4497 continue;
4498 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4499 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4500 else
eb4ff4d6 4501 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4502 }
4503 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4504 relocation = elf_i386_tpoff (info, relocation);
37e55690 4505 else
eb4ff4d6 4506 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4507 break;
4508
252b5132
RH		 4509 default:
4510 break;
4511 }
4512
239e1f3a
AM		 4513 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4514 because such sections are not SEC_ALLOC and thus ld.so will
4515 not process them. */
8c694914 4516 if (unresolved_reloc
239e1f3a 4517 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4518 && h->def_dynamic)
4519 && _bfd_elf_section_offset (output_bfd, info, input_section,
4520 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4521 {
4522 (*_bfd_error_handler)
843fe662 4523 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4524 input_bfd,
4525 input_section,
6a30718d 4526 (long) rel->r_offset,
843fe662 4527 howto->name,
6a30718d 4528 h->root.root.string);
b34976b6 4529 return FALSE;
6a30718d 4530 }
83be169b 4531
cbe950e9 4532do_relocation:
252b5132
RH		 4533 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4534 contents, rel->r_offset,
55fd94b0 4535 relocation, 0);
252b5132 4536
62d78908 4537check_relocation_error:
cf5c0c5b 4538 if (r != bfd_reloc_ok)
252b5132 4539 {
cf5c0c5b 4540 const char *name;
ffb2e45b 4541
cf5c0c5b
AM		 4542 if (h != NULL)
4543 name = h->root.root.string;
4544 else
4545 {
4546 name = bfd_elf_string_from_elf_section (input_bfd,
4547 symtab_hdr->sh_link,
4548 sym->st_name);
4549 if (name == NULL)
b34976b6 4550 return FALSE;
cf5c0c5b
AM		 4551 if (*name == '\0')
4552 name = bfd_section_name (input_bfd, sec);
4553 }
ffb2e45b 4554
cf5c0c5b
AM		 4555 if (r == bfd_reloc_overflow)
4556 {
cf5c0c5b 4557 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4558 (info, (h ? &h->root : NULL), name, howto->name,
4559 (bfd_vma) 0, input_bfd, input_section,
4560 rel->r_offset)))
b34976b6 4561 return FALSE;
cf5c0c5b
AM		 4562 }
4563 else
4564 {
4565 (*_bfd_error_handler)
d003868e
AM		 4566 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4567 input_bfd, input_section,
cf5c0c5b 4568 (long) rel->r_offset, name, (int) r);
b34976b6 4569 return FALSE;
cf5c0c5b 4570 }
252b5132
RH		 4571 }
4572 }
4573
b34976b6 4574 return TRUE;
252b5132
RH		 4575}
4576
4577/* Finish up dynamic symbol handling. We set the contents of various
4578 dynamic sections here. */
4579
b34976b6 4580static bfd_boolean
55fd94b0
AM		 4581elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4582 struct bfd_link_info *info,
4583 struct elf_link_hash_entry *h,
4584 Elf_Internal_Sym *sym)
252b5132 4585{
6725bdbf 4586 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4587 unsigned plt_entry_size;
4588 const struct elf_i386_backend_data *abed;
dd7e64d4 4589 struct elf_i386_link_hash_entry *eh;
252b5132 4590
6725bdbf 4591 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4592 if (htab == NULL)
4593 return FALSE;
252b5132 4594
25e762b9
RM		 4595 abed = get_elf_i386_backend_data (output_bfd);
4596 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4597
dd7e64d4
L		 4598 eh = (struct elf_i386_link_hash_entry *) h;
4599
252b5132
RH		 4600 if (h->plt.offset != (bfd_vma) -1)
4601 {
252b5132
RH		 4602 bfd_vma plt_index;
4603 bfd_vma got_offset;
947216bf
AM		 4604 Elf_Internal_Rela rel;
4605 bfd_byte *loc;
cbe950e9
L		 4606 asection *plt, *gotplt, *relplt;
4607
4608 /* When building a static executable, use .iplt, .igot.plt and
4609 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4610 if (htab->elf.splt != NULL)
cbe950e9 4611 {
6de2ae4a
L		 4612 plt = htab->elf.splt;
4613 gotplt = htab->elf.sgotplt;
4614 relplt = htab->elf.srelplt;
cbe950e9
L		 4615 }
4616 else
4617 {
6de2ae4a
L		 4618 plt = htab->elf.iplt;
4619 gotplt = htab->elf.igotplt;
4620 relplt = htab->elf.irelplt;
cbe950e9 4621 }
252b5132
RH		 4622
4623 /* This symbol has an entry in the procedure linkage table. Set
4624 it up. */
4625
cbe950e9
L		 4626 if ((h->dynindx == -1
4627 && !((h->forced_local || info->executable)
4628 && h->def_regular
4629 && h->type == STT_GNU_IFUNC))
4630 || plt == NULL
4631 || gotplt == NULL
4632 || relplt == NULL)
cec7f46a 4633 abort ();
252b5132
RH		 4634
4635 /* Get the index in the procedure linkage table which
4636 corresponds to this symbol. This is the index of this symbol
4637 in all the symbols for which we are making plt entries. The
cbe950e9 4638 first entry in the procedure linkage table is reserved.
252b5132 4639
cbe950e9 4640 Get the offset into the .got table of the entry that
252b5132 4641 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4642 The first three are reserved.
6bbec505 4643
cbe950e9
L		 4644 For static executables, we don't reserve anything. */
4645
6de2ae4a 4646 if (plt == htab->elf.splt)
cbe950e9 4647 {
e1f98742
L		 4648 got_offset = h->plt.offset / plt_entry_size - 1;
4649 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4650 }
4651 else
4652 {
e1f98742
L		 4653 got_offset = h->plt.offset / plt_entry_size;
4654 got_offset = got_offset * 4;
cbe950e9 4655 }
252b5132
RH		 4656
4657 /* Fill in the entry in the procedure linkage table. */
4658 if (! info->shared)
4659 {
25e762b9
RM		 4660 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4661 abed->plt->plt_entry_size);
252b5132 4662 bfd_put_32 (output_bfd,
cbe950e9
L		 4663 (gotplt->output_section->vma
4664 + gotplt->output_offset
252b5132 4665 + got_offset),
25e762b9
RM		 4666 plt->contents + h->plt.offset
4667 + abed->plt->plt_got_offset);
eac338cf 4668
25e762b9 4669 if (abed->is_vxworks)
eac338cf
PB		 4670 {
4671 int s, k, reloc_index;
4672
4673 /* Create the R_386_32 relocation referencing the GOT
4674 for this PLT entry. */
4675
4676 /* S: Current slot number (zero-based). */
25e762b9
RM		 4677 s = ((h->plt.offset - abed->plt->plt_entry_size)
4678 / abed->plt->plt_entry_size);
eac338cf
PB		 4679 /* K: Number of relocations for PLTResolve. */
4680 if (info->shared)
4681 k = PLTRESOLVE_RELOCS_SHLIB;
4682 else
4683 k = PLTRESOLVE_RELOCS;
4684 /* Skip the PLTresolve relocations, and the relocations for
4685 the other PLT slots. */
4686 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4687 loc = (htab->srelplt2->contents + reloc_index
4688 * sizeof (Elf32_External_Rel));
4689
6de2ae4a
L		 4690 rel.r_offset = (htab->elf.splt->output_section->vma
4691 + htab->elf.splt->output_offset
eac338cf 4692 + h->plt.offset + 2),
7325306f 4693 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4694 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4695
4696 /* Create the R_386_32 relocation referencing the beginning of
4697 the PLT for this GOT entry. */
6de2ae4a
L		 4698 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4699 + htab->elf.sgotplt->output_offset
eac338cf 4700 + got_offset);
7325306f 4701 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4702 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4703 loc + sizeof (Elf32_External_Rel));
eac338cf 4704 }
252b5132
RH		 4705 }
4706 else
4707 {
25e762b9
RM		 4708 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4709 abed->plt->plt_entry_size);
252b5132 4710 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4711 plt->contents + h->plt.offset
4712 + abed->plt->plt_got_offset);
252b5132
RH		 4713 }
4714
252b5132
RH		 4715 /* Fill in the entry in the global offset table. */
4716 bfd_put_32 (output_bfd,
cbe950e9
L		 4717 (plt->output_section->vma
4718 + plt->output_offset
252b5132 4719 + h->plt.offset
25e762b9 4720 + abed->plt->plt_lazy_offset),
cbe950e9 4721 gotplt->contents + got_offset);
252b5132
RH		 4722
4723 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4724 rel.r_offset = (gotplt->output_section->vma
4725 + gotplt->output_offset
252b5132 4726 + got_offset);
cbe950e9
L		 4727 if (h->dynindx == -1
4728 || ((info->executable
4729 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4730 && h->def_regular
4731 && h->type == STT_GNU_IFUNC))
4732 {
4733 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4734 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4735 in the .got.plt section. */
4736 bfd_put_32 (output_bfd,
23209a78 4737 (h->root.u.def.value
cbe950e9
L		 4738 + h->root.u.def.section->output_section->vma
4739 + h->root.u.def.section->output_offset),
4740 gotplt->contents + got_offset);
4741 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4742 /* R_386_IRELATIVE comes last. */
4743 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4744 }
4745 else
e1f98742
L		 4746 {
4747 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4748 plt_index = htab->next_jump_slot_index++;
4749 }
cbe950e9 4750 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4751 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4752
e1f98742
L		 4753 /* Don't fill PLT entry for static executables. */
4754 if (plt == htab->elf.splt)
4755 {
4756 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4757 plt->contents + h->plt.offset
4758 + abed->plt->plt_reloc_offset);
4759 bfd_put_32 (output_bfd, - (h->plt.offset
4760 + abed->plt->plt_plt_offset + 4),
4761 plt->contents + h->plt.offset
4762 + abed->plt->plt_plt_offset);
4763 }
dd7e64d4
L		 4764 }
4765 else if (eh->plt_got.offset != (bfd_vma) -1)
4766 {
4767 bfd_vma got_offset, plt_offset;
4768 asection *plt, *got, *gotplt;
4769 const bfd_byte *got_plt_entry;
4770
4771 /* Offset of displacement of the indirect jump. */
4772 bfd_vma plt_got_offset = 2;
e1f98742 4773
dd7e64d4
L		 4774 /* Set the entry in the GOT procedure linkage table. */
4775 plt = htab->plt_got;
4776 got = htab->elf.sgot;
4777 gotplt = htab->elf.sgotplt;
4778 got_offset = h->got.offset;
4779
4780 if (got_offset == (bfd_vma) -1
4781 || plt == NULL
4782 || got == NULL
4783 || gotplt == NULL)
4784 abort ();
4785
4786 /* Fill in the entry in the GOT procedure linkage table. */
4787 if (! info->shared)
252b5132 4788 {
dd7e64d4
L		 4789 got_plt_entry = elf_i386_got_plt_entry;
4790 got_offset += got->output_section->vma + got->output_offset;
252b5132 4791 }
dd7e64d4
L		 4792 else
4793 {
4794 got_plt_entry = elf_i386_pic_got_plt_entry;
4795 got_offset += (got->output_section->vma
4796 + got->output_offset
4797 - gotplt->output_section->vma
4798 - gotplt->output_offset);
4799 }
4800
4801 plt_offset = eh->plt_got.offset;
4802 memcpy (plt->contents + plt_offset, got_plt_entry,
4803 sizeof (elf_i386_got_plt_entry));
4804 bfd_put_32 (output_bfd, got_offset,
4805 plt->contents + plt_offset + plt_got_offset);
4806 }
4807
4808 if (!h->def_regular
4809 && (h->plt.offset != (bfd_vma) -1
4810 || eh->plt_got.offset != (bfd_vma) -1))
4811 {
4812 /* Mark the symbol as undefined, rather than as defined in
4813 the .plt section. Leave the value if there were any
4814 relocations where pointer equality matters (this is a clue
4815 for the dynamic linker, to make function pointer
4816 comparisons work between an application and shared
4817 library), otherwise set it to zero. If a function is only
4818 called from a binary, there is no need to slow down
4819 shared libraries because of that. */
4820 sym->st_shndx = SHN_UNDEF;
4821 if (!h->pointer_equality_needed)
4822 sym->st_value = 0;
252b5132
RH		 4823 }
4824
13ae64f3 4825 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4826 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4827 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4828 {
947216bf 4829 Elf_Internal_Rela rel;
252b5132
RH		 4830
4831 /* This symbol has an entry in the global offset table. Set it
4832 up. */
4833
6de2ae4a 4834 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4835 abort ();
252b5132 4836
6de2ae4a
L		 4837 rel.r_offset = (htab->elf.sgot->output_section->vma
4838 + htab->elf.sgot->output_offset
dc810e39 4839 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4840
dd5724d5
AM		 4841 /* If this is a static link, or it is a -Bsymbolic link and the
4842 symbol is defined locally or was forced to be local because
4843 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4844 The entry in the global offset table will already have been
4845 initialized in the relocate_section function. */
710ab287 4846 if (h->def_regular
0018b0a3
L		 4847 && h->type == STT_GNU_IFUNC)
4848 {
710ab287
L		 4849 if (info->shared)
4850 {
4851 /* Generate R_386_GLOB_DAT. */
4852 goto do_glob_dat;
4853 }
4854 else
4855 {
cd2b2c10
L		 4856 asection *plt;
4857
710ab287
L		 4858 if (!h->pointer_equality_needed)
4859 abort ();
4860
4861 /* For non-shared object, we can't use .got.plt, which
4862 contains the real function addres if we need pointer
4863 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4864 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4865 bfd_put_32 (output_bfd,
4866 (plt->output_section->vma
4867 + plt->output_offset + h->plt.offset),
6de2ae4a 4868 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4869 return TRUE;
4870 }
0018b0a3
L		 4871 }
4872 else if (info->shared
4873 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4874 {
6725bdbf 4875 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4876 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4877 }
252b5132
RH		 4878 else
4879 {
dd5724d5 4880 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4881do_glob_dat:
6725bdbf 4882 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4883 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4884 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4885 }
4886
59d6ffb2 4887 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 4888 }
4889
f5385ebf 4890 if (h->needs_copy)
252b5132 4891 {
947216bf 4892 Elf_Internal_Rela rel;
252b5132
RH		 4893
4894 /* This symbol needs a copy reloc. Set it up. */
4895
ffb2e45b
AM		 4896 if (h->dynindx == -1
4897 || (h->root.type != bfd_link_hash_defined
4898 && h->root.type != bfd_link_hash_defweak)
4899 || htab->srelbss == NULL)
4900 abort ();
252b5132
RH		 4901
4902 rel.r_offset = (h->root.u.def.value
4903 + h->root.u.def.section->output_section->vma
4904 + h->root.u.def.section->output_offset);
4905 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 4906 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 4907 }
4908
b34976b6 4909 return TRUE;
252b5132
RH		 4910}
4911
c25bc9fc
L		 4912/* Finish up local dynamic symbol handling. We set the contents of
4913 various dynamic sections here. */
4914
4915static bfd_boolean
4916elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4917{
4918 struct elf_link_hash_entry *h
4919 = (struct elf_link_hash_entry *) *slot;
4920 struct bfd_link_info *info
23209a78 4921 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4922
4923 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4924 h, NULL);
4925}
4926
38701953
AM		 4927/* Used to decide how to sort relocs in an optimal manner for the
4928 dynamic linker, before writing them out. */
4929
4930static enum elf_reloc_type_class
7e612e98
AM		 4931elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4932 const asection *rel_sec ATTRIBUTE_UNUSED,
4933 const Elf_Internal_Rela *rela)
38701953 4934{
55fd94b0 4935 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4936 {
4937 case R_386_RELATIVE:
4938 return reloc_class_relative;
4939 case R_386_JUMP_SLOT:
4940 return reloc_class_plt;
4941 case R_386_COPY:
4942 return reloc_class_copy;
4943 default:
4944 return reloc_class_normal;
4945 }
4946}
4947
252b5132
RH		 4948/* Finish up the dynamic sections. */
4949
b34976b6 4950static bfd_boolean
55fd94b0
AM		 4951elf_i386_finish_dynamic_sections (bfd *output_bfd,
4952 struct bfd_link_info *info)
252b5132 4953{
6725bdbf 4954 struct elf_i386_link_hash_table *htab;
252b5132 4955 bfd *dynobj;
252b5132 4956 asection *sdyn;
25e762b9 4957 const struct elf_i386_backend_data *abed;
252b5132 4958
6725bdbf 4959 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4960 if (htab == NULL)
4961 return FALSE;
4962
ebe50bae 4963 dynobj = htab->elf.dynobj;
3d4d4302 4964 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4965 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4966
ebe50bae 4967 if (htab->elf.dynamic_sections_created)
252b5132 4968 {
252b5132
RH		 4969 Elf32_External_Dyn *dyncon, *dynconend;
4970
6de2ae4a 4971 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4972 abort ();
252b5132
RH		 4973
4974 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4975 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4976 for (; dyncon < dynconend; dyncon++)
4977 {
4978 Elf_Internal_Dyn dyn;
51b64d56 4979 asection *s;
252b5132
RH		 4980
4981 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4982
4983 switch (dyn.d_tag)
4984 {
4985 default:
25e762b9
RM		 4986 if (abed->is_vxworks
4987 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 4988 break;
0ac8d2ca 4989 continue;
252b5132
RH		 4990
4991 case DT_PLTGOT:
6de2ae4a 4992 s = htab->elf.sgotplt;
8c37241b 4993 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 4994 break;
4995
252b5132 4996 case DT_JMPREL:
6de2ae4a 4997 s = htab->elf.srelplt;
6348e046 4998 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 4999 break;
5000
5001 case DT_PLTRELSZ:
6de2ae4a 5002 s = htab->elf.srelplt;
eea6121a 5003 dyn.d_un.d_val = s->size;
252b5132
RH		 5004 break;
5005
5006 case DT_RELSZ:
5007 /* My reading of the SVR4 ABI indicates that the
5008 procedure linkage table relocs (DT_JMPREL) should be
5009 included in the overall relocs (DT_REL). This is
5010 what Solaris does. However, UnixWare can not handle
5011 that case. Therefore, we override the DT_RELSZ entry
6348e046 5012 here to make it not include the JMPREL relocs. */
6de2ae4a 5013 s = htab->elf.srelplt;
6348e046
AM		 5014 if (s == NULL)
5015 continue;
eea6121a 5016 dyn.d_un.d_val -= s->size;
6348e046
AM		 5017 break;
5018
5019 case DT_REL:
5020 /* We may not be using the standard ELF linker script.
5021 If .rel.plt is the first .rel section, we adjust
5022 DT_REL to not include it. */
6de2ae4a 5023 s = htab->elf.srelplt;
6348e046
AM		 5024 if (s == NULL)
5025 continue;
5026 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
5027 continue;
eea6121a 5028 dyn.d_un.d_ptr += s->size;
252b5132
RH		 5029 break;
5030 }
0ac8d2ca
AM		 5031
5032 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 5033 }
5034
5035 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 5036 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 5037 {
5038 if (info->shared)
eac338cf 5039 {
25e762b9
RM		 5040 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
5041 abed->plt->plt0_entry_size);
5042 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5043 abed->plt0_pad_byte,
5044 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 5045 }
252b5132
RH		 5046 else
5047 {
25e762b9
RM		 5048 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
5049 abed->plt->plt0_entry_size);
5050 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5051 abed->plt0_pad_byte,
5052 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 5053 bfd_put_32 (output_bfd,
6de2ae4a
L		 5054 (htab->elf.sgotplt->output_section->vma
5055 + htab->elf.sgotplt->output_offset
6725bdbf 5056 + 4),
25e762b9
RM		 5057 htab->elf.splt->contents
5058 + abed->plt->plt0_got1_offset);
252b5132 5059 bfd_put_32 (output_bfd,
6de2ae4a
L		 5060 (htab->elf.sgotplt->output_section->vma
5061 + htab->elf.sgotplt->output_offset
6725bdbf 5062 + 8),
25e762b9
RM		 5063 htab->elf.splt->contents
5064 + abed->plt->plt0_got2_offset);
eac338cf 5065
25e762b9 5066 if (abed->is_vxworks)
eac338cf
PB		 5067 {
5068 Elf_Internal_Rela rel;
7325306f 5069
eac338cf
PB		 5070 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
5071 On IA32 we use REL relocations so the addend goes in
5072 the PLT directly. */
6de2ae4a
L		 5073 rel.r_offset = (htab->elf.splt->output_section->vma
5074 + htab->elf.splt->output_offset
25e762b9 5075 + abed->plt->plt0_got1_offset);
7325306f 5076 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5077 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5078 htab->srelplt2->contents);
5079 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 5080 rel.r_offset = (htab->elf.splt->output_section->vma
5081 + htab->elf.splt->output_offset
25e762b9 5082 + abed->plt->plt0_got2_offset);
7325306f 5083 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5084 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5085 htab->srelplt2->contents +
5086 sizeof (Elf32_External_Rel));
5087 }
252b5132
RH		 5088 }
5089
5090 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5091 really seem like the right value. */
6de2ae4a 5092 elf_section_data (htab->elf.splt->output_section)
6725bdbf 5093 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 5094
5095 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 5096 if (abed->is_vxworks && !info->shared)
eac338cf 5097 {
25e762b9
RM		 5098 int num_plts = (htab->elf.splt->size
5099 / abed->plt->plt_entry_size) - 1;
4c9b0de6 5100 unsigned char *p;
eac338cf
PB		 5101
5102 p = htab->srelplt2->contents;
5103 if (info->shared)
5104 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5105 else
5106 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5107
5108 for (; num_plts; num_plts--)
5109 {
5110 Elf_Internal_Rela rel;
5111 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5112 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5113 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5114 p += sizeof (Elf32_External_Rel);
5115
5116 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5117 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 5118 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5119 p += sizeof (Elf32_External_Rel);
5120 }
5121 }
252b5132
RH		 5122 }
5123 }
5124
6de2ae4a 5125 if (htab->elf.sgotplt)
252b5132 5126 {
56d4289c
L		 5127 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5128 {
5129 (*_bfd_error_handler)
5130 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5131 return FALSE;
5132 }
5133
12d0ee4a 5134 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5135 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 5136 {
5137 bfd_put_32 (output_bfd,
55fd94b0 5138 (sdyn == NULL ? 0
12d0ee4a 5139 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 5140 htab->elf.sgotplt->contents);
5141 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5142 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 5143 }
252b5132 5144
6de2ae4a 5145 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5146 }
8c37241b 5147
e41b3a13 5148 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5149 if (htab->plt_eh_frame != NULL
5150 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5151 {
5152 if (htab->elf.splt != NULL
5153 && htab->elf.splt->size != 0
5154 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5155 && htab->elf.splt->output_section != NULL
5156 && htab->plt_eh_frame->output_section != NULL)
5157 {
5158 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5159 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5160 + htab->plt_eh_frame->output_offset
5161 + PLT_FDE_START_OFFSET;
5162 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5163 htab->plt_eh_frame->contents
5164 + PLT_FDE_START_OFFSET);
5165 }
5166 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5167 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5168 {
5169 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5170 htab->plt_eh_frame,
5171 htab->plt_eh_frame->contents))
5172 return FALSE;
5173 }
5174 }
5175
6de2ae4a
L		 5176 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5177 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5178
c25bc9fc
L		 5179 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5180 htab_traverse (htab->loc_hash_table,
5181 elf_i386_finish_local_dynamic_symbol,
5182 info);
5183
b34976b6 5184 return TRUE;
252b5132
RH		 5185}
5186
3972882e 5187/* Return an array of PLT entry symbol values. */
4c45e5c9 5188
3972882e
L		 5189static bfd_vma *
5190elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5191 asection *relplt)
4c45e5c9 5192{
3972882e
L		 5193 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5194 arelent *p;
5195 long count, i;
5196 bfd_vma *plt_sym_val;
144bed8d 5197 bfd_vma plt_offset;
3972882e
L		 5198 bfd_byte *plt_contents;
5199 const struct elf_i386_backend_data *bed
5200 = get_elf_i386_backend_data (abfd);
5201 Elf_Internal_Shdr *hdr;
5202
5203 /* Get the .plt section contents. */
5204 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5205 if (plt_contents == NULL)
5206 return NULL;
5207 if (!bfd_get_section_contents (abfd, (asection *) plt,
5208 plt_contents, 0, plt->size))
5209 {
5210bad_return:
5211 free (plt_contents);
5212 return NULL;
5213 }
144bed8d 5214
3972882e
L		 5215 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5216 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5217 goto bad_return;
144bed8d 5218
3972882e
L		 5219 hdr = &elf_section_data (relplt)->this_hdr;
5220 count = relplt->size / hdr->sh_entsize;
5221
5222 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5223 if (plt_sym_val == NULL)
5224 goto bad_return;
cca5b8b6 5225
35181b3e 5226 for (i = 0; i < count; i++)
3972882e 5227 plt_sym_val[i] = -1;
cca5b8b6 5228
3972882e
L		 5229 plt_offset = bed->plt->plt_entry_size;
5230 p = relplt->relocation;
5231 for (i = 0; i < count; i++, p++)
144bed8d 5232 {
3972882e
L		 5233 long reloc_index;
5234
6f25f223 5235 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
533d0af0 5236 if (p->howto == NULL)
6f25f223 5237 continue;
533d0af0
L		 5238
5239 if (p->howto->type != R_386_JUMP_SLOT
5240 && p->howto->type != R_386_IRELATIVE)
3972882e
L		 5241 continue;
5242
5243 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
5244 + bed->plt->plt_reloc_offset));
5245 reloc_index /= sizeof (Elf32_External_Rel);
5246 if (reloc_index >= count)
5247 abort ();
5248 plt_sym_val[reloc_index] = plt->vma + plt_offset;
144bed8d
L		 5249 plt_offset += bed->plt->plt_entry_size;
5250 }
5251
3972882e
L		 5252 free (plt_contents);
5253
5254 return plt_sym_val;
5255}
5256
5257/* Similar to _bfd_elf_get_synthetic_symtab. */
5258
5259static long
5260elf_i386_get_synthetic_symtab (bfd *abfd,
5261 long symcount,
5262 asymbol **syms,
5263 long dynsymcount,
5264 asymbol **dynsyms,
5265 asymbol **ret)
5266{
5267 asection *plt = bfd_get_section_by_name (abfd, ".plt");
5268 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
5269 dynsymcount, dynsyms, ret,
5270 plt,
5271 elf_i386_get_plt_sym_val);
4c45e5c9
JJ		 5272}
5273
fdc90cb4
JJ		 5274/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5275
5276static bfd_boolean
5277elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5278{
5279 if (h->plt.offset != (bfd_vma) -1
5280 && !h->def_regular
5281 && !h->pointer_equality_needed)
5282 return FALSE;
5283
5284 return _bfd_elf_hash_symbol (h);
5285}
4c45e5c9 5286
d8045f23
NC		 5287/* Hook called by the linker routine which adds symbols from an object
5288 file. */
5289
5290static bfd_boolean
c16153ae 5291elf_i386_add_symbol_hook (bfd * abfd,
f1885d1e 5292 struct bfd_link_info * info,
d8045f23
NC		 5293 Elf_Internal_Sym * sym,
5294 const char ** namep ATTRIBUTE_UNUSED,
5295 flagword * flagsp ATTRIBUTE_UNUSED,
5296 asection ** secp ATTRIBUTE_UNUSED,
5297 bfd_vma * valp ATTRIBUTE_UNUSED)
5298{
f1885d1e
AM		 5299 if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5300 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
5301 && (abfd->flags & DYNAMIC) == 0
5302 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
f64b2e8d 5303 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC		 5304
5305 return TRUE;
5306}
5307
6d00b590 5308#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 5309#define TARGET_LITTLE_NAME "elf32-i386"
5310#define ELF_ARCH bfd_arch_i386
ae95ffa6 5311#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5312#define ELF_MACHINE_CODE EM_386
5313#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5314
5315#define elf_backend_can_gc_sections 1
51b64d56 5316#define elf_backend_can_refcount 1
252b5132
RH		 5317#define elf_backend_want_got_plt 1
5318#define elf_backend_plt_readonly 1
5319#define elf_backend_want_plt_sym 0
5320#define elf_backend_got_header_size 12
e41b3a13 5321#define elf_backend_plt_alignment 4
f7483970 5322#define elf_backend_extern_protected_data 1
252b5132 5323
8c29f035
AM		 5324/* Support RELA for objdump of prelink objects. */
5325#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5326#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5327
13ae64f3 5328#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5329
dd5724d5
AM		 5330#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5331#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
5332#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5333#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 5334#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5
AM		 5335
5336#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5337#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5338#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5339#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5340#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5341#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5342#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5343#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5344#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5345#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5346#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5347#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5348#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5349#define elf_backend_relocate_section elf_i386_relocate_section
5350#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5351#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5352#define elf_backend_omit_section_dynsym \
5353 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
fdc90cb4 5354#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23 5355#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
dd5724d5 5356
252b5132 5357#include "elf32-target.h"
2bc3c89a
AM		 5358
5359/* FreeBSD support. */
5360
5361#undef TARGET_LITTLE_SYM
6d00b590 5362#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 5363#undef TARGET_LITTLE_NAME
5364#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5365#undef ELF_OSABI
5366#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5367
5368/* The kernel recognizes executables as valid only if they carry a
5369 "FreeBSD" label in the ELF header. So we put this label on all
5370 executables and (for simplicity) also all other object files. */
5371
2bc3c89a 5372static void
d8045f23 5373elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5374{
78245035 5375 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 5376
2bc3c89a 5377#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 5378 {
5379 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5380 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
5381 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
5382 }
caf47ea6 5383#endif
2bc3c89a
AM		 5384}
5385
5386#undef elf_backend_post_process_headers
d8045f23 5387#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5388#undef elf32_bed
5389#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5390
d8045f23
NC		 5391#undef elf_backend_add_symbol_hook
5392
2bc3c89a 5393#include "elf32-target.h"
eac338cf 5394
a6cc6b3b
RO		 5395/* Solaris 2. */
5396
5397#undef TARGET_LITTLE_SYM
6d00b590 5398#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 5399#undef TARGET_LITTLE_NAME
5400#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5401
914082d1
L		 5402#undef elf_backend_post_process_headers
5403
a6cc6b3b
RO		 5404/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5405 objects won't be recognized. */
5406#undef ELF_OSABI
5407
5408#undef elf32_bed
5409#define elf32_bed elf32_i386_sol2_bed
5410
7dc98aea
RO		 5411/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5412 boundary. */
5413#undef elf_backend_static_tls_alignment
5414#define elf_backend_static_tls_alignment 8
5415
a6cc6b3b
RO		 5416/* The Solaris 2 ABI requires a plt symbol on all platforms.
5417
5418 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5419 File, p.63. */
5420#undef elf_backend_want_plt_sym
5421#define elf_backend_want_plt_sym 1
5422
5423#include "elf32-target.h"
5424
bf64a951
L		 5425/* Intel MCU support. */
5426
5427static bfd_boolean
5428elf32_iamcu_elf_object_p (bfd *abfd)
5429{
5430 /* Set the right machine number for an IAMCU elf32 file. */
5431 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
5432 return TRUE;
5433}
5434
5435#undef TARGET_LITTLE_SYM
5436#define TARGET_LITTLE_SYM iamcu_elf32_vec
5437#undef TARGET_LITTLE_NAME
5438#define TARGET_LITTLE_NAME "elf32-iamcu"
5439#undef ELF_ARCH
5440#define ELF_ARCH bfd_arch_iamcu
5441
5442#undef ELF_MACHINE_CODE
5443#define ELF_MACHINE_CODE EM_IAMCU
5444
5445#undef ELF_OSABI
5446
5447#undef elf32_bed
5448#define elf32_bed elf32_iamcu_bed
5449
5450#undef elf_backend_object_p
5451#define elf_backend_object_p elf32_iamcu_elf_object_p
5452
5453#undef elf_backend_static_tls_alignment
5454
5455#undef elf_backend_want_plt_sym
5456#define elf_backend_want_plt_sym 0
5457
5458#include "elf32-target.h"
5459
5460/* Restore defaults. */
5461#undef ELF_ARCH
5462#define ELF_ARCH bfd_arch_i386
5463#undef ELF_MACHINE_CODE
5464#define ELF_MACHINE_CODE EM_386
5465
a27e4371
RM		 5466/* Native Client support. */
5467
5468#undef TARGET_LITTLE_SYM
6d00b590 5469#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 5470#undef TARGET_LITTLE_NAME
5471#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5472#undef elf32_bed
5473#define elf32_bed elf32_i386_nacl_bed
5474
5475#undef ELF_MAXPAGESIZE
5476#define ELF_MAXPAGESIZE 0x10000
5477
5478/* Restore defaults. */
5479#undef ELF_OSABI
5480#undef elf_backend_want_plt_sym
5481#define elf_backend_want_plt_sym 0
5482#undef elf_backend_post_process_headers
a27e4371
RM		 5483#undef elf_backend_static_tls_alignment
5484
5485/* NaCl uses substantially different PLT entries for the same effects. */
5486
5487#undef elf_backend_plt_alignment
5488#define elf_backend_plt_alignment 5
5489#define NACL_PLT_ENTRY_SIZE 64
5490#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5491
5492static const bfd_byte elf_i386_nacl_plt0_entry[] =
5493 {
5494 0xff, 0x35, /* pushl contents of address */
5495 0, 0, 0, 0, /* replaced with address of .got + 4. */
5496 0x8b, 0x0d, /* movl contents of address, %ecx */
5497 0, 0, 0, 0, /* replaced with address of .got + 8. */
5498 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5499 0xff, 0xe1 /* jmp *%ecx */
5500 };
5501
5502static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5503 {
5504 0x8b, 0x0d, /* movl contents of address, %ecx */
5505 0, 0, 0, 0, /* replaced with GOT slot address. */
5506 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5507 0xff, 0xe1, /* jmp *%ecx */
5508
5509 /* Pad to the next 32-byte boundary with nop instructions. */
5510 0x90,
5511 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5512 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5513
5514 /* Lazy GOT entries point here (32-byte aligned). */
5515 0x68, /* pushl immediate */
5516 0, 0, 0, 0, /* replaced with reloc offset. */
5517 0xe9, /* jmp relative */
5518 0, 0, 0, 0, /* replaced with offset to .plt. */
5519
5520 /* Pad to the next 32-byte boundary with nop instructions. */
5521 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5522 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5523 0x90, 0x90
5524 };
5525
5526static const bfd_byte
5527elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5528 {
5529 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5530 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5531 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5532 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5533
5534 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5535 so pad to that size with nop instructions. */
5536 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5537 };
5538
5539static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5540 {
5541 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5542 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5543 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5544 0xff, 0xe1, /* jmp *%ecx */
5545
5546 /* Pad to the next 32-byte boundary with nop instructions. */
5547 0x90,
5548 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5549 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5550
5551 /* Lazy GOT entries point here (32-byte aligned). */
5552 0x68, /* pushl immediate */
5553 0, 0, 0, 0, /* replaced with offset into relocation table. */
5554 0xe9, /* jmp relative */
5555 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5556
5557 /* Pad to the next 32-byte boundary with nop instructions. */
5558 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5559 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5560 0x90, 0x90
5561 };
5562
5563static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5564 {
5565#if (PLT_CIE_LENGTH != 20 \
5566 || PLT_FDE_LENGTH != 36 \
5567 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5568 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5569# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5570#endif
5571 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5572 0, 0, 0, 0, /* CIE ID */
5573 1, /* CIE version */
5574 'z', 'R', 0, /* Augmentation string */
5575 1, /* Code alignment factor */
5576 0x7c, /* Data alignment factor: -4 */
5577 8, /* Return address column */
5578 1, /* Augmentation size */
5579 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5580 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5581 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5582 DW_CFA_nop, DW_CFA_nop,
5583
5584 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5585 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5586 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5587 0, 0, 0, 0, /* .plt size goes here */
5588 0, /* Augmentation size */
5589 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5590 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5591 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5592 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5593 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5594 13, /* Block length */
5595 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5596 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5597 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5598 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5599 DW_CFA_nop, DW_CFA_nop
5600 };
5601
5602static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5603 {
5604 elf_i386_nacl_plt0_entry, /* plt0_entry */
5605 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5606 2, /* plt0_got1_offset */
5607 8, /* plt0_got2_offset */
5608 elf_i386_nacl_plt_entry, /* plt_entry */
5609 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5610 2, /* plt_got_offset */
5611 33, /* plt_reloc_offset */
5612 38, /* plt_plt_offset */
5613 32, /* plt_lazy_offset */
5614 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5615 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5616 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5617 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5618 };
5619
5620static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5621 {
5622 &elf_i386_nacl_plt, /* plt */
5623 0x90, /* plt0_pad_byte: nop insn */
5624 0, /* is_vxworks */
5625 };
5626
64b384e1
RM		 5627static bfd_boolean
5628elf32_i386_nacl_elf_object_p (bfd *abfd)
5629{
5630 /* Set the right machine number for a NaCl i386 ELF32 file. */
5631 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
5632 return TRUE;
5633}
5634
a27e4371
RM		 5635#undef elf_backend_arch_data
5636#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5637
64b384e1
RM		 5638#undef elf_backend_object_p
5639#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 5640#undef elf_backend_modify_segment_map
5641#define elf_backend_modify_segment_map nacl_modify_segment_map
5642#undef elf_backend_modify_program_headers
5643#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5644#undef elf_backend_final_write_processing
5645#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5646
a27e4371
RM		 5647#include "elf32-target.h"
5648
5a68afcf 5649/* Restore defaults. */
64b384e1 5650#undef elf_backend_object_p
5a68afcf
RM		 5651#undef elf_backend_modify_segment_map
5652#undef elf_backend_modify_program_headers
887badb3 5653#undef elf_backend_final_write_processing
5a68afcf 5654
eac338cf
PB		 5655/* VxWorks support. */
5656
5657#undef TARGET_LITTLE_SYM
6d00b590 5658#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 5659#undef TARGET_LITTLE_NAME
5660#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5661#undef ELF_OSABI
a27e4371
RM		 5662#undef elf_backend_plt_alignment
5663#define elf_backend_plt_alignment 4
eac338cf 5664
23209a78
RM		 5665static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5666 {
25e762b9 5667 &elf_i386_plt, /* plt */
23209a78
RM		 5668 0x90, /* plt0_pad_byte */
5669 1, /* is_vxworks */
5670 };
eac338cf 5671
23209a78
RM		 5672#undef elf_backend_arch_data
5673#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5674
13285a1b 5675#undef elf_backend_relocs_compatible
eac338cf
PB		 5676#undef elf_backend_add_symbol_hook
5677#define elf_backend_add_symbol_hook \
5678 elf_vxworks_add_symbol_hook
5679#undef elf_backend_link_output_symbol_hook
5680#define elf_backend_link_output_symbol_hook \
9c72ff84 5681 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5682#undef elf_backend_emit_relocs
5683#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5684#undef elf_backend_final_write_processing
5685#define elf_backend_final_write_processing \
5686 elf_vxworks_final_write_processing
7dc98aea 5687#undef elf_backend_static_tls_alignment
eac338cf
PB		 5688
5689/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5690 define it. */
5691#undef elf_backend_want_plt_sym
5692#define elf_backend_want_plt_sym 1
5693
5694#undef elf32_bed
5695#define elf32_bed elf32_i386_vxworks_bed
5696
5697#include "elf32-target.h"
GDB Binutils - Deliverables
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