projects / deliverable / binutils-gdb.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
*** empty log message ***
[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
b2a8e766 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
1d7e9d18 3 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
9f973f28 4 Free Software Foundation, Inc.
252b5132 5
571fe01f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
571fe01f
NC		 8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
571fe01f 11 (at your option) any later version.
252b5132 12
571fe01f
NC		 13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
571fe01f
NC		 18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
cd123cb7
NC		 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
252b5132 22
252b5132 23#include "sysdep.h"
3db64b00 24#include "bfd.h"
252b5132
RH		 25#include "bfdlink.h"
26#include "libbfd.h"
27#include "elf-bfd.h"
5a68afcf 28#include "elf-nacl.h"
eac338cf 29#include "elf-vxworks.h"
142411ca 30#include "bfd_stdint.h"
c25bc9fc
L		 31#include "objalloc.h"
32#include "hashtab.h"
e41b3a13 33#include "dwarf2.h"
252b5132 34
55fd94b0
AM		 35/* 386 uses REL relocations instead of RELA. */
36#define USE_REL 1
252b5132
RH		 37
38#include "elf/i386.h"
39
40static reloc_howto_type elf_howto_table[]=
41{
b34976b6 42 HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
1b452ec6 43 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 44 TRUE, 0x00000000, 0x00000000, FALSE),
45 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 46 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 47 TRUE, 0xffffffff, 0xffffffff, FALSE),
48 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 49 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 50 TRUE, 0xffffffff, 0xffffffff, TRUE),
51 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 52 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 53 TRUE, 0xffffffff, 0xffffffff, FALSE),
54 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 55 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 56 TRUE, 0xffffffff, 0xffffffff, TRUE),
57 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 58 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 59 TRUE, 0xffffffff, 0xffffffff, FALSE),
60 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 61 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 62 TRUE, 0xffffffff, 0xffffffff, FALSE),
63 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 64 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 65 TRUE, 0xffffffff, 0xffffffff, FALSE),
66 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 67 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 68 TRUE, 0xffffffff, 0xffffffff, FALSE),
69 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 70 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 71 TRUE, 0xffffffff, 0xffffffff, FALSE),
72 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 73 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 74 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 75
dc47f327
AM		 76 /* We have a gap in the reloc numbers here.
77 R_386_standard counts the number up to this point, and
78 R_386_ext_offset is the value to subtract from a reloc type of
79 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 80#define R_386_standard (R_386_GOTPC + 1)
81#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 82
37e55690 83 /* These relocs are a GNU extension. */
b34976b6 84 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 85 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 86 TRUE, 0xffffffff, 0xffffffff, FALSE),
87 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 88 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 89 TRUE, 0xffffffff, 0xffffffff, FALSE),
90 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 91 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 92 TRUE, 0xffffffff, 0xffffffff, FALSE),
93 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 94 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 95 TRUE, 0xffffffff, 0xffffffff, FALSE),
96 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 97 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 98 TRUE, 0xffffffff, 0xffffffff, FALSE),
99 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 100 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 101 TRUE, 0xffffffff, 0xffffffff, FALSE),
102 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 103 bfd_elf_generic_reloc, "R_386_16",
b34976b6 104 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 105 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 106 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 107 TRUE, 0xffff, 0xffff, TRUE),
108 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 109 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 110 TRUE, 0xff, 0xff, FALSE),
111 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 112 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 113 TRUE, 0xff, 0xff, TRUE),
dc47f327 114
55fd94b0
AM		 115#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
116#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 117 /* These are common with Solaris TLS implementation. */
b34976b6 118 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 119 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 120 TRUE, 0xffffffff, 0xffffffff, FALSE),
121 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 122 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 123 TRUE, 0xffffffff, 0xffffffff, FALSE),
124 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 125 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 126 TRUE, 0xffffffff, 0xffffffff, FALSE),
127 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 128 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 129 TRUE, 0xffffffff, 0xffffffff, FALSE),
130 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 131 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 132 TRUE, 0xffffffff, 0xffffffff, FALSE),
133 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 134 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 135 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 136 EMPTY_HOWTO (38),
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
67a4f2b7
AO		 315 case BFD_RELOC_386_TLS_GOTDESC:
316 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
317 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
318
319 case BFD_RELOC_386_TLS_DESC_CALL:
320 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
321 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
322
323 case BFD_RELOC_386_TLS_DESC:
324 TRACE ("BFD_RELOC_386_TLS_DESC");
325 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
326
cbe950e9
L		 327 case BFD_RELOC_386_IRELATIVE:
328 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 329 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 330
252b5132
RH		 331 case BFD_RELOC_VTABLE_INHERIT:
332 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 333 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 334
335 case BFD_RELOC_VTABLE_ENTRY:
336 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 337 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 338
339 default:
340 break;
341 }
342
343 TRACE ("Unknown");
344 return 0;
345}
346
157090f7
AM		 347static reloc_howto_type *
348elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
349 const char *r_name)
350{
351 unsigned int i;
352
353 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
354 if (elf_howto_table[i].name != NULL
355 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
356 return &elf_howto_table[i];
357
358 return NULL;
359}
360
142411ca
L		 361static reloc_howto_type *
362elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 363{
dc47f327
AM		 364 unsigned int indx;
365
366 if ((indx = r_type) >= R_386_standard
367 && ((indx = r_type - R_386_ext_offset) - R_386_standard
368 >= R_386_ext - R_386_standard)
13ae64f3 369 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9
L		 370 >= R_386_irelative - R_386_ext)
371 && ((indx = r_type - R_386_vt_offset) - R_386_irelative
372 >= R_386_vt - R_386_irelative))
252b5132 373 {
d003868e
AM		 374 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
375 abfd, (int) r_type);
55fd94b0 376 indx = R_386_NONE;
252b5132 377 }
142411ca
L		 378 BFD_ASSERT (elf_howto_table [indx].type == r_type);
379 return &elf_howto_table[indx];
380}
381
382static void
383elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
384 arelent *cache_ptr,
385 Elf_Internal_Rela *dst)
386{
387 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
388 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 389}
390
391/* Return whether a symbol name implies a local label. The UnixWare
392 2.1 cc generates temporary symbols that start with .X, so we
393 recognize them here. FIXME: do other SVR4 compilers also use .X?.
394 If so, we should move the .X recognition into
395 _bfd_elf_is_local_label_name. */
396
b34976b6 397static bfd_boolean
55fd94b0 398elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 399{
400 if (name[0] == '.' && name[1] == 'X')
b34976b6 401 return TRUE;
252b5132
RH		 402
403 return _bfd_elf_is_local_label_name (abfd, name);
404}
405\f
38701953 406/* Support for core dump NOTE sections. */
61adc1a4 407
b34976b6 408static bfd_boolean
55fd94b0 409elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 410{
411 int offset;
eea6121a 412 size_t size;
38701953 413
61adc1a4 414 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 415 {
61adc1a4
NC		 416 int pr_version = bfd_get_32 (abfd, note->descdata);
417
418 if (pr_version != 1)
419 return FALSE;
420
421 /* pr_cursig */
422 elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
423
424 /* pr_pid */
261b8d08 425 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 426
427 /* pr_reg */
428 offset = 28;
eea6121a 429 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 430 }
431 else
432 {
433 switch (note->descsz)
434 {
435 default:
436 return FALSE;
38701953 437
61adc1a4
NC		 438 case 144: /* Linux/i386 */
439 /* pr_cursig */
440 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 441
61adc1a4 442 /* pr_pid */
261b8d08 443 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 444
61adc1a4
NC		 445 /* pr_reg */
446 offset = 72;
eea6121a 447 size = 68;
38701953 448
61adc1a4
NC		 449 break;
450 }
38701953
AM		 451 }
452
453 /* Make a ".reg/999" section. */
454 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 455 size, note->descpos + offset);
38701953
AM		 456}
457
b34976b6 458static bfd_boolean
55fd94b0 459elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 460{
61adc1a4 461 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 462 {
61adc1a4
NC		 463 int pr_version = bfd_get_32 (abfd, note->descdata);
464
465 if (pr_version != 1)
b34976b6 466 return FALSE;
38701953 467
61adc1a4
NC		 468 elf_tdata (abfd)->core_program
469 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
470 elf_tdata (abfd)->core_command
471 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
472 }
473 else
474 {
475 switch (note->descsz)
476 {
477 default:
478 return FALSE;
479
480 case 124: /* Linux/i386 elf_prpsinfo. */
261b8d08
PA		 481 elf_tdata (abfd)->core_pid
482 = bfd_get_32 (abfd, note->descdata + 12);
61adc1a4
NC		 483 elf_tdata (abfd)->core_program
484 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
485 elf_tdata (abfd)->core_command
486 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
487 }
38701953
AM		 488 }
489
490 /* Note that for some reason, a spurious space is tacked
491 onto the end of the args in some (at least one anyway)
492 implementations, so strip it off if it exists. */
38701953
AM		 493 {
494 char *command = elf_tdata (abfd)->core_command;
495 int n = strlen (command);
496
497 if (0 < n && command[n - 1] == ' ')
498 command[n - 1] = '\0';
499 }
500
b34976b6 501 return TRUE;
38701953
AM		 502}
503\f
504/* Functions for the i386 ELF linker.
505
506 In order to gain some understanding of code in this file without
507 knowing all the intricate details of the linker, note the
508 following:
509
510 Functions named elf_i386_* are called by external routines, other
511 functions are only called locally. elf_i386_* functions appear
512 in this file more or less in the order in which they are called
513 from external routines. eg. elf_i386_check_relocs is called
514 early in the link process, elf_i386_finish_dynamic_sections is
515 one of the last functions. */
516
252b5132
RH		 517
518/* The name of the dynamic interpreter. This is put in the .interp
519 section. */
520
521#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
522
a23b6845
AM		 523/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
524 copying dynamic variables from a shared lib into an app's dynbss
525 section, and instead use a dynamic relocation to point into the
526 shared lib. */
527#define ELIMINATE_COPY_RELOCS 1
528
252b5132
RH		 529/* The size in bytes of an entry in the procedure linkage table. */
530
531#define PLT_ENTRY_SIZE 16
532
533/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 534 this. See the SVR4 ABI i386 supplement to see how this works.
535 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 536
eac338cf 537static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 538{
539 0xff, 0x35, /* pushl contents of address */
540 0, 0, 0, 0, /* replaced with address of .got + 4. */
541 0xff, 0x25, /* jmp indirect */
eac338cf 542 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 543};
544
545/* Subsequent entries in an absolute procedure linkage table look like
546 this. */
547
548static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
549{
550 0xff, 0x25, /* jmp indirect */
551 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
552 0x68, /* pushl immediate */
553 0, 0, 0, 0, /* replaced with offset into relocation table. */
554 0xe9, /* jmp relative */
555 0, 0, 0, 0 /* replaced with offset to start of .plt. */
556};
557
eac338cf
PB		 558/* The first entry in a PIC procedure linkage table look like this.
559 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 560
eac338cf 561static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 562{
563 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 564 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 565};
566
567/* Subsequent entries in a PIC procedure linkage table look like this. */
568
569static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
570{
571 0xff, 0xa3, /* jmp *offset(%ebx) */
572 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
573 0x68, /* pushl immediate */
574 0, 0, 0, 0, /* replaced with offset into relocation table. */
575 0xe9, /* jmp relative */
576 0, 0, 0, 0 /* replaced with offset to start of .plt. */
577};
578
e41b3a13
JJ		 579/* .eh_frame covering the .plt section. */
580
581static const bfd_byte elf_i386_eh_frame_plt[] =
582{
583#define PLT_CIE_LENGTH 20
584#define PLT_FDE_LENGTH 36
585#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
586#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
587 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
588 0, 0, 0, 0, /* CIE ID */
589 1, /* CIE version */
590 'z', 'R', 0, /* Augmentation string */
591 1, /* Code alignment factor */
592 0x7c, /* Data alignment factor */
593 8, /* Return address column */
594 1, /* Augmentation size */
595 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
596 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
597 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
598 DW_CFA_nop, DW_CFA_nop,
599
600 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
601 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
602 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
603 0, 0, 0, 0, /* .plt size goes here */
604 0, /* Augmentation size */
605 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
606 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
607 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
608 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
609 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
610 11, /* Block length */
611 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
612 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
613 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 614 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ		 615 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
616};
617
25e762b9
RM		 618struct elf_i386_plt_layout
619{
620 /* The first entry in an absolute procedure linkage table looks like this. */
621 const bfd_byte *plt0_entry;
622 unsigned int plt0_entry_size;
623
624 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
625 unsigned int plt0_got1_offset;
626 unsigned int plt0_got2_offset;
627
628 /* Later entries in an absolute procedure linkage table look like this. */
629 const bfd_byte *plt_entry;
630 unsigned int plt_entry_size;
631
632 /* Offsets into plt_entry that are to be replaced with... */
633 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
634 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
635 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
636
637 /* Offset into plt_entry where the initial value of the GOT entry points. */
638 unsigned int plt_lazy_offset;
639
640 /* The first entry in a PIC procedure linkage table looks like this. */
641 const bfd_byte *pic_plt0_entry;
642
643 /* Subsequent entries in a PIC procedure linkage table look like this. */
644 const bfd_byte *pic_plt_entry;
645
646 /* .eh_frame covering the .plt section. */
647 const bfd_byte *eh_frame_plt;
648 unsigned int eh_frame_plt_size;
649};
650
651#define GET_PLT_ENTRY_SIZE(abfd) \
652 get_elf_i386_backend_data (abfd)->plt->plt_entry_size
653
654/* These are the standard parameters. */
655static const struct elf_i386_plt_layout elf_i386_plt =
656 {
657 elf_i386_plt0_entry, /* plt0_entry */
658 sizeof (elf_i386_plt0_entry), /* plt0_entry_size */
659 2, /* plt0_got1_offset */
660 8, /* plt0_got2_offset */
661 elf_i386_plt_entry, /* plt_entry */
662 PLT_ENTRY_SIZE, /* plt_entry_size */
663 2, /* plt_got_offset */
664 7, /* plt_reloc_offset */
665 12, /* plt_plt_offset */
666 6, /* plt_lazy_offset */
667 elf_i386_pic_plt0_entry, /* pic_plt0_entry */
668 elf_i386_pic_plt_entry, /* pic_plt_entry */
669 elf_i386_eh_frame_plt, /* eh_frame_plt */
670 sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */
671 };
672\f
673
eac338cf
PB		 674/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
675 for the PLTResolve stub and then for each PLT entry. */
676#define PLTRESOLVE_RELOCS_SHLIB 0
677#define PLTRESOLVE_RELOCS 2
678#define PLT_NON_JUMP_SLOT_RELOCS 2
679
23209a78
RM		 680/* Architecture-specific backend data for i386. */
681
682struct elf_i386_backend_data
683{
25e762b9
RM		 684 /* Parameters describing PLT generation. */
685 const struct elf_i386_plt_layout *plt;
686
23209a78
RM		 687 /* Value used to fill the unused bytes of the first PLT entry. */
688 bfd_byte plt0_pad_byte;
689
690 /* True if the target system is VxWorks. */
691 int is_vxworks;
692};
693
694#define get_elf_i386_backend_data(abfd) \
695 ((const struct elf_i386_backend_data *) \
696 get_elf_backend_data (abfd)->arch_data)
697
698/* These are the standard parameters. */
699static const struct elf_i386_backend_data elf_i386_arch_bed =
700 {
25e762b9 701 &elf_i386_plt, /* plt */
23209a78
RM		 702 0, /* plt0_pad_byte */
703 0, /* is_vxworks */
704 };
705
706#define elf_backend_arch_data &elf_i386_arch_bed
707
252b5132
RH		 708/* i386 ELF linker hash entry. */
709
710struct elf_i386_link_hash_entry
711{
ebe50bae 712 struct elf_link_hash_entry elf;
252b5132 713
0c715baa 714 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 715 struct elf_dyn_relocs *dyn_relocs;
13ae64f3 716
37e55690
JJ		 717#define GOT_UNKNOWN 0
718#define GOT_NORMAL 1
719#define GOT_TLS_GD 2
720#define GOT_TLS_IE 4
721#define GOT_TLS_IE_POS 5
722#define GOT_TLS_IE_NEG 6
723#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO		 724#define GOT_TLS_GDESC 8
725#define GOT_TLS_GD_BOTH_P(type) \
726 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
727#define GOT_TLS_GD_P(type) \
728 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
729#define GOT_TLS_GDESC_P(type) \
730 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
731#define GOT_TLS_GD_ANY_P(type) \
732 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 733 unsigned char tls_type;
67a4f2b7
AO		 734
735 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
736 starting at the end of the jump table. */
737 bfd_vma tlsdesc_got;
13ae64f3
JJ		 738};
739
740#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
741
742struct elf_i386_obj_tdata
743{
744 struct elf_obj_tdata root;
745
746 /* tls_type for each local got entry. */
747 char *local_got_tls_type;
67a4f2b7
AO		 748
749 /* GOTPLT entries for TLS descriptors. */
750 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 751};
752
13ae64f3
JJ		 753#define elf_i386_tdata(abfd) \
754 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
755
756#define elf_i386_local_got_tls_type(abfd) \
757 (elf_i386_tdata (abfd)->local_got_tls_type)
758
67a4f2b7
AO		 759#define elf_i386_local_tlsdesc_gotent(abfd) \
760 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
761
0ffa91dd
NC		 762#define is_i386_elf(bfd) \
763 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
764 && elf_tdata (bfd) != NULL \
4dfe6ac6 765 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 766
b34976b6 767static bfd_boolean
55fd94b0 768elf_i386_mkobject (bfd *abfd)
13ae64f3 769{
0ffa91dd 770 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 771 I386_ELF_DATA);
13ae64f3 772}
cedb70c5 773
252b5132
RH		 774/* i386 ELF linker hash table. */
775
776struct elf_i386_link_hash_table
777{
ebe50bae 778 struct elf_link_hash_table elf;
252b5132 779
6725bdbf 780 /* Short-cuts to get to dynamic linker sections. */
6725bdbf
AM		 781 asection *sdynbss;
782 asection *srelbss;
e41b3a13 783 asection *plt_eh_frame;
9635fe29 784
4dfe6ac6
NC		 785 union
786 {
13ae64f3
JJ		 787 bfd_signed_vma refcount;
788 bfd_vma offset;
789 } tls_ldm_got;
790
67a4f2b7
AO		 791 /* The amount of space used by the reserved portion of the sgotplt
792 section, plus whatever space is used by the jump slots. */
793 bfd_vma sgotplt_jump_table_size;
794
87d72d41
AM		 795 /* Small local sym cache. */
796 struct sym_cache sym_cache;
9f03412a
AO		 797
798 /* _TLS_MODULE_BASE_ symbol. */
799 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 800
801 /* Used by local STT_GNU_IFUNC symbols. */
802 htab_t loc_hash_table;
4dfe6ac6
NC		 803 void * loc_hash_memory;
804
805 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
806 asection *srelplt2;
807
4dfe6ac6
NC		 808 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
809 bfd_vma next_tls_desc_index;
e1f98742
L		 810
811 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
812 bfd_vma next_jump_slot_index;
813
814 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
815 bfd_vma next_irelative_index;
6725bdbf 816};
252b5132
RH		 817
818/* Get the i386 ELF linker hash table from a link_info structure. */
819
820#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 821 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
822 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 823
67a4f2b7 824#define elf_i386_compute_jump_table_size(htab) \
5ae0bfb6 825 ((htab)->next_tls_desc_index * 4)
67a4f2b7 826
252b5132
RH		 827/* Create an entry in an i386 ELF linker hash table. */
828
829static struct bfd_hash_entry *
eb4ff4d6
L		 830elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
831 struct bfd_hash_table *table,
832 const char *string)
252b5132 833{
252b5132
RH		 834 /* Allocate the structure if it has not already been allocated by a
835 subclass. */
ebe50bae
AM		 836 if (entry == NULL)
837 {
a50b1753
NC		 838 entry = (struct bfd_hash_entry *)
839 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 840 if (entry == NULL)
841 return entry;
842 }
252b5132
RH		 843
844 /* Call the allocation method of the superclass. */
ebe50bae
AM		 845 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
846 if (entry != NULL)
252b5132 847 {
ebe50bae
AM		 848 struct elf_i386_link_hash_entry *eh;
849
850 eh = (struct elf_i386_link_hash_entry *) entry;
851 eh->dyn_relocs = NULL;
13ae64f3 852 eh->tls_type = GOT_UNKNOWN;
67a4f2b7 853 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 854 }
855
ebe50bae 856 return entry;
252b5132
RH		 857}
858
c25bc9fc
L		 859/* Compute a hash of a local hash entry. We use elf_link_hash_entry
860 for local symbol so that we can handle local STT_GNU_IFUNC symbols
861 as global symbol. We reuse indx and dynstr_index for local symbol
862 hash since they aren't used by global symbols in this backend. */
863
864static hashval_t
865elf_i386_local_htab_hash (const void *ptr)
866{
867 struct elf_link_hash_entry *h
868 = (struct elf_link_hash_entry *) ptr;
d2149d72 869 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 870}
871
872/* Compare local hash entries. */
873
874static int
875elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
876{
877 struct elf_link_hash_entry *h1
878 = (struct elf_link_hash_entry *) ptr1;
879 struct elf_link_hash_entry *h2
880 = (struct elf_link_hash_entry *) ptr2;
881
882 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
883}
884
885/* Find and/or create a hash entry for local symbol. */
886
887static struct elf_link_hash_entry *
888elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
889 bfd *abfd, const Elf_Internal_Rela *rel,
890 bfd_boolean create)
891{
892 struct elf_i386_link_hash_entry e, *ret;
893 asection *sec = abfd->sections;
d2149d72
L		 894 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
895 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 896 void **slot;
897
898 e.elf.indx = sec->id;
899 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
900 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
901 create ? INSERT : NO_INSERT);
902
903 if (!slot)
904 return NULL;
905
906 if (*slot)
907 {
908 ret = (struct elf_i386_link_hash_entry *) *slot;
909 return &ret->elf;
910 }
911
912 ret = (struct elf_i386_link_hash_entry *)
913 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
914 sizeof (struct elf_i386_link_hash_entry));
915 if (ret)
916 {
917 memset (ret, 0, sizeof (*ret));
918 ret->elf.indx = sec->id;
919 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
920 ret->elf.dynindx = -1;
c25bc9fc
L		 921 *slot = ret;
922 }
923 return &ret->elf;
924}
925
252b5132
RH		 926/* Create an i386 ELF linker hash table. */
927
928static struct bfd_link_hash_table *
55fd94b0 929elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 930{
931 struct elf_i386_link_hash_table *ret;
dc810e39 932 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 933
a50b1753 934 ret = (struct elf_i386_link_hash_table *) bfd_malloc (amt);
ebe50bae 935 if (ret == NULL)
252b5132
RH		 936 return NULL;
937
eb4ff4d6
L		 938 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
939 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 940 sizeof (struct elf_i386_link_hash_entry),
941 I386_ELF_DATA))
252b5132 942 {
e2d34d7d 943 free (ret);
252b5132
RH		 944 return NULL;
945 }
946
6725bdbf
AM		 947 ret->sdynbss = NULL;
948 ret->srelbss = NULL;
332ce62b 949 ret->plt_eh_frame = NULL;
7a624474 950 ret->tls_ldm_got.refcount = 0;
5ae0bfb6 951 ret->next_tls_desc_index = 0;
67a4f2b7 952 ret->sgotplt_jump_table_size = 0;
87d72d41 953 ret->sym_cache.abfd = NULL;
eac338cf 954 ret->srelplt2 = NULL;
9f03412a 955 ret->tls_module_base = NULL;
e1f98742
L		 956 ret->next_jump_slot_index = 0;
957 ret->next_irelative_index = 0;
6725bdbf 958
c25bc9fc
L		 959 ret->loc_hash_table = htab_try_create (1024,
960 elf_i386_local_htab_hash,
961 elf_i386_local_htab_eq,
962 NULL);
963 ret->loc_hash_memory = objalloc_create ();
964 if (!ret->loc_hash_table || !ret->loc_hash_memory)
965 {
966 free (ret);
967 return NULL;
968 }
969
ebe50bae 970 return &ret->elf.root;
252b5132
RH		 971}
972
c25bc9fc
L		 973/* Destroy an i386 ELF linker hash table. */
974
975static void
976elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash)
977{
978 struct elf_i386_link_hash_table *htab
979 = (struct elf_i386_link_hash_table *) hash;
980
981 if (htab->loc_hash_table)
982 htab_delete (htab->loc_hash_table);
983 if (htab->loc_hash_memory)
984 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
985 _bfd_generic_link_hash_table_free (hash);
986}
987
6725bdbf
AM		 988/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
989 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
990 hash table. */
991
b34976b6 992static bfd_boolean
55fd94b0 993elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 994{
995 struct elf_i386_link_hash_table *htab;
996
6725bdbf 997 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 998 return FALSE;
6725bdbf 999
6de2ae4a 1000 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1001 if (htab == NULL)
1002 return FALSE;
1003
3d4d4302 1004 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
6725bdbf 1005 if (!info->shared)
3d4d4302 1006 htab->srelbss = bfd_get_linker_section (dynobj, ".rel.bss");
6725bdbf 1007
6de2ae4a 1008 if (!htab->sdynbss
6725bdbf
AM		 1009 || (!info->shared && !htab->srelbss))
1010 abort ();
1011
23209a78 1012 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1013 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1014 &htab->srelplt2))
711de32c 1015 return FALSE;
eac338cf 1016
e41b3a13 1017 if (!info->no_ld_generated_unwind_info
2fe0fd06 1018 && htab->plt_eh_frame == NULL
e4de50d4 1019 && htab->elf.splt != NULL)
e41b3a13 1020 {
bbf96e4e
L		 1021 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1022 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1023 | SEC_LINKER_CREATED);
e41b3a13 1024 htab->plt_eh_frame
bbf96e4e 1025 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ		 1026 if (htab->plt_eh_frame == NULL
1027 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1028 return FALSE;
e41b3a13
JJ		 1029 }
1030
b34976b6 1031 return TRUE;
6725bdbf
AM		 1032}
1033
ebe50bae
AM		 1034/* Copy the extra info we tack onto an elf_link_hash_entry. */
1035
51b64d56 1036static void
fcfa13d2 1037elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1038 struct elf_link_hash_entry *dir,
1039 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1040{
1041 struct elf_i386_link_hash_entry *edir, *eind;
1042
1043 edir = (struct elf_i386_link_hash_entry *) dir;
1044 eind = (struct elf_i386_link_hash_entry *) ind;
1045
bbd7ec4a 1046 if (eind->dyn_relocs != NULL)
ebe50bae 1047 {
bbd7ec4a
AM		 1048 if (edir->dyn_relocs != NULL)
1049 {
e03a8ed8
L		 1050 struct elf_dyn_relocs **pp;
1051 struct elf_dyn_relocs *p;
bbd7ec4a 1052
fcfa13d2 1053 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1054 list. Merge any entries against the same section. */
1055 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1056 {
e03a8ed8 1057 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1058
1059 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1060 if (q->sec == p->sec)
1061 {
1062 q->pc_count += p->pc_count;
1063 q->count += p->count;
1064 *pp = p->next;
1065 break;
1066 }
1067 if (q == NULL)
1068 pp = &p->next;
1069 }
1070 *pp = edir->dyn_relocs;
1071 }
1072
ebe50bae
AM		 1073 edir->dyn_relocs = eind->dyn_relocs;
1074 eind->dyn_relocs = NULL;
1075 }
ebe50bae 1076
cd67d266
JJ		 1077 if (ind->root.type == bfd_link_hash_indirect
1078 && dir->got.refcount <= 0)
1079 {
1080 edir->tls_type = eind->tls_type;
1081 eind->tls_type = GOT_UNKNOWN;
1082 }
81848ca0
AM		 1083
1084 if (ELIMINATE_COPY_RELOCS
1085 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1086 && dir->dynamic_adjusted)
1087 {
1088 /* If called to transfer flags for a weakdef during processing
1089 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1090 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1091 dir->ref_dynamic |= ind->ref_dynamic;
1092 dir->ref_regular |= ind->ref_regular;
1093 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1094 dir->needs_plt |= ind->needs_plt;
1095 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1096 }
81848ca0 1097 else
fcfa13d2 1098 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
ebe50bae
AM		 1099}
1100
142411ca
L		 1101/* Return TRUE if the TLS access code sequence support transition
1102 from R_TYPE. */
1103
1104static bfd_boolean
1105elf_i386_check_tls_transition (bfd *abfd, asection *sec,
1106 bfd_byte *contents,
1107 Elf_Internal_Shdr *symtab_hdr,
1108 struct elf_link_hash_entry **sym_hashes,
1109 unsigned int r_type,
1110 const Elf_Internal_Rela *rel,
1111 const Elf_Internal_Rela *relend)
13ae64f3 1112{
142411ca
L		 1113 unsigned int val, type;
1114 unsigned long r_symndx;
1115 struct elf_link_hash_entry *h;
1116 bfd_vma offset;
1117
1118 /* Get the section contents. */
1119 if (contents == NULL)
1120 {
1121 if (elf_section_data (sec)->this_hdr.contents != NULL)
1122 contents = elf_section_data (sec)->this_hdr.contents;
1123 else
1124 {
1125 /* FIXME: How to better handle error condition? */
1126 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1127 return FALSE;
13ae64f3 1128
142411ca
L		 1129 /* Cache the section contents for elf_link_input_bfd. */
1130 elf_section_data (sec)->this_hdr.contents = contents;
1131 }
1132 }
1133
1134 offset = rel->r_offset;
13ae64f3 1135 switch (r_type)
142411ca
L		 1136 {
1137 case R_386_TLS_GD:
1138 case R_386_TLS_LDM:
1139 if (offset < 2 || (rel + 1) >= relend)
1140 return FALSE;
1141
1142 type = bfd_get_8 (abfd, contents + offset - 2);
1143 if (r_type == R_386_TLS_GD)
1144 {
09e8c3bf 1145 /* Check transition from GD access model. Only
142411ca
L		 1146 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1147 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1148 can transit to different access model. */
1149 if ((offset + 10) > sec->size ||
1150 (type != 0x8d && type != 0x04))
1151 return FALSE;
1152
1153 val = bfd_get_8 (abfd, contents + offset - 1);
1154 if (type == 0x04)
1155 {
1156 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1157 if (offset < 3)
1158 return FALSE;
1159
1160 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1161 return FALSE;
1162
1163 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1164 return FALSE;
1165 }
1166 else
1167 {
1168 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1169 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1170 return FALSE;
1171
1172 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1173 return FALSE;
1174 }
1175 }
1176 else
1177 {
1178 /* Check transition from LD access model. Only
1179 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1180 can transit to different access model. */
1181 if (type != 0x8d || (offset + 9) > sec->size)
1182 return FALSE;
1183
1184 val = bfd_get_8 (abfd, contents + offset - 1);
1185 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1186 return FALSE;
1187 }
1188
1189 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1190 return FALSE;
1191
1192 r_symndx = ELF32_R_SYM (rel[1].r_info);
1193 if (r_symndx < symtab_hdr->sh_info)
1194 return FALSE;
1195
1196 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b
L		 1197 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1198 may be versioned. */
142411ca
L		 1199 return (h != NULL
1200 && h->root.root.string != NULL
1201 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1202 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
c4fb387b
L		 1203 && (strncmp (h->root.root.string, "___tls_get_addr",
1204 15) == 0));
142411ca
L		 1205
1206 case R_386_TLS_IE:
1207 /* Check transition from IE access model:
1208 movl foo@indntpoff(%rip), %eax
1209 movl foo@indntpoff(%rip), %reg
1210 addl foo@indntpoff(%rip), %reg
1211 */
1212
1213 if (offset < 1 || (offset + 4) > sec->size)
1214 return FALSE;
1215
1216 /* Check "movl foo@tpoff(%rip), %eax" first. */
1217 val = bfd_get_8 (abfd, contents + offset - 1);
1218 if (val == 0xa1)
1219 return TRUE;
1220
1221 if (offset < 2)
1222 return FALSE;
1223
1224 /* Check movl|addl foo@tpoff(%rip), %reg. */
1225 type = bfd_get_8 (abfd, contents + offset - 2);
1226 return ((type == 0x8b || type == 0x03)
1227 && (val & 0xc7) == 0x05);
1228
1229 case R_386_TLS_GOTIE:
1230 case R_386_TLS_IE_32:
1231 /* Check transition from {IE_32,GOTIE} access model:
1232 subl foo@{tpoff,gontoff}(%reg1), %reg2
1233 movl foo@{tpoff,gontoff}(%reg1), %reg2
1234 addl foo@{tpoff,gontoff}(%reg1), %reg2
1235 */
1236
1237 if (offset < 2 || (offset + 4) > sec->size)
1238 return FALSE;
1239
1240 val = bfd_get_8 (abfd, contents + offset - 1);
1241 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1242 return FALSE;
1243
1244 type = bfd_get_8 (abfd, contents + offset - 2);
1245 return type == 0x8b || type == 0x2b || type == 0x03;
1246
1247 case R_386_TLS_GOTDESC:
1248 /* Check transition from GDesc access model:
1249 leal x@tlsdesc(%ebx), %eax
1250
1251 Make sure it's a leal adding ebx to a 32-bit offset
1252 into any register, although it's probably almost always
1253 going to be eax. */
1254
1255 if (offset < 2 || (offset + 4) > sec->size)
1256 return FALSE;
1257
1258 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1259 return FALSE;
1260
1261 val = bfd_get_8 (abfd, contents + offset - 1);
1262 return (val & 0xc7) == 0x83;
1263
1264 case R_386_TLS_DESC_CALL:
1265 /* Check transition from GDesc access model:
1266 call *x@tlsdesc(%rax)
1267 */
1268 if (offset + 2 <= sec->size)
1269 {
1270 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM		 1271 static const unsigned char call[] = { 0xff, 0x10 };
1272 return memcmp (contents + offset, call, 2) == 0;
142411ca
L		 1273 }
1274
1275 return FALSE;
1276
1277 default:
1278 abort ();
1279 }
1280}
1281
1282/* Return TRUE if the TLS access transition is OK or no transition
1283 will be performed. Update R_TYPE if there is a transition. */
1284
1285static bfd_boolean
1286elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1287 asection *sec, bfd_byte *contents,
1288 Elf_Internal_Shdr *symtab_hdr,
1289 struct elf_link_hash_entry **sym_hashes,
1290 unsigned int *r_type, int tls_type,
1291 const Elf_Internal_Rela *rel,
1292 const Elf_Internal_Rela *relend,
4c544807
L		 1293 struct elf_link_hash_entry *h,
1294 unsigned long r_symndx)
142411ca
L		 1295{
1296 unsigned int from_type = *r_type;
1297 unsigned int to_type = from_type;
1298 bfd_boolean check = TRUE;
1299
bb1cb422
L		 1300 /* Skip TLS transition for functions. */
1301 if (h != NULL
1302 && (h->type == STT_FUNC
1303 || h->type == STT_GNU_IFUNC))
1304 return TRUE;
1305
142411ca 1306 switch (from_type)
13ae64f3
JJ		 1307 {
1308 case R_386_TLS_GD:
67a4f2b7
AO		 1309 case R_386_TLS_GOTDESC:
1310 case R_386_TLS_DESC_CALL:
13ae64f3 1311 case R_386_TLS_IE_32:
37e55690
JJ		 1312 case R_386_TLS_IE:
1313 case R_386_TLS_GOTIE:
1d85728f 1314 if (info->executable)
142411ca
L		 1315 {
1316 if (h == NULL)
1317 to_type = R_386_TLS_LE_32;
1318 else if (from_type != R_386_TLS_IE
1319 && from_type != R_386_TLS_GOTIE)
1320 to_type = R_386_TLS_IE_32;
1321 }
1322
1323 /* When we are called from elf_i386_relocate_section, CONTENTS
1324 isn't NULL and there may be additional transitions based on
1325 TLS_TYPE. */
1326 if (contents != NULL)
1327 {
1328 unsigned int new_to_type = to_type;
1329
1d85728f 1330 if (info->executable
142411ca
L		 1331 && h != NULL
1332 && h->dynindx == -1
1333 && (tls_type & GOT_TLS_IE))
1334 new_to_type = R_386_TLS_LE_32;
1335
1336 if (to_type == R_386_TLS_GD
1337 || to_type == R_386_TLS_GOTDESC
1338 || to_type == R_386_TLS_DESC_CALL)
1339 {
1340 if (tls_type == GOT_TLS_IE_POS)
1341 new_to_type = R_386_TLS_GOTIE;
1342 else if (tls_type & GOT_TLS_IE)
1343 new_to_type = R_386_TLS_IE_32;
1344 }
1345
1346 /* We checked the transition before when we were called from
1347 elf_i386_check_relocs. We only want to check the new
1348 transition which hasn't been checked before. */
1349 check = new_to_type != to_type && from_type == to_type;
1350 to_type = new_to_type;
1351 }
1352
1353 break;
1354
13ae64f3 1355 case R_386_TLS_LDM:
1d85728f 1356 if (info->executable)
142411ca
L		 1357 to_type = R_386_TLS_LE_32;
1358 break;
1359
1360 default:
1361 return TRUE;
1362 }
1363
1364 /* Return TRUE if there is no transition. */
1365 if (from_type == to_type)
1366 return TRUE;
1367
1368 /* Check if the transition can be performed. */
1369 if (check
1370 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1371 symtab_hdr, sym_hashes,
1372 from_type, rel, relend))
1373 {
2f629d23 1374 reloc_howto_type *from, *to;
4c544807 1375 const char *name;
142411ca
L		 1376
1377 from = elf_i386_rtype_to_howto (abfd, from_type);
1378 to = elf_i386_rtype_to_howto (abfd, to_type);
1379
4c544807
L		 1380 if (h)
1381 name = h->root.root.string;
1382 else
1383 {
4c544807 1384 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1385
4c544807 1386 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1387 if (htab == NULL)
1388 name = "*unknown*";
1389 else
1390 {
1391 Elf_Internal_Sym *isym;
1392
1393 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1394 abfd, r_symndx);
1395 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1396 }
4c544807
L		 1397 }
1398
142411ca
L		 1399 (*_bfd_error_handler)
1400 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1401 "in section `%A' failed"),
4c544807 1402 abfd, sec, from->name, to->name, name,
142411ca
L		 1403 (unsigned long) rel->r_offset);
1404 bfd_set_error (bfd_error_bad_value);
1405 return FALSE;
13ae64f3
JJ		 1406 }
1407
142411ca
L		 1408 *r_type = to_type;
1409 return TRUE;
13ae64f3
JJ		 1410}
1411
252b5132 1412/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1413 calculate needed space in the global offset table, procedure linkage
1414 table, and dynamic reloc sections. */
252b5132 1415
b34976b6 1416static bfd_boolean
55fd94b0
AM		 1417elf_i386_check_relocs (bfd *abfd,
1418 struct bfd_link_info *info,
1419 asection *sec,
1420 const Elf_Internal_Rela *relocs)
252b5132 1421{
6725bdbf 1422 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1423 Elf_Internal_Shdr *symtab_hdr;
1424 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1425 const Elf_Internal_Rela *rel;
1426 const Elf_Internal_Rela *rel_end;
252b5132
RH		 1427 asection *sreloc;
1428
1049f94e 1429 if (info->relocatable)
b34976b6 1430 return TRUE;
252b5132 1431
0ffa91dd
NC		 1432 BFD_ASSERT (is_i386_elf (abfd));
1433
6725bdbf 1434 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1435 if (htab == NULL)
1436 return FALSE;
1437
0ffa91dd 1438 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1439 sym_hashes = elf_sym_hashes (abfd);
252b5132 1440
252b5132
RH		 1441 sreloc = NULL;
1442
1443 rel_end = relocs + sec->reloc_count;
1444 for (rel = relocs; rel < rel_end; rel++)
1445 {
13ae64f3 1446 unsigned int r_type;
252b5132
RH		 1447 unsigned long r_symndx;
1448 struct elf_link_hash_entry *h;
4c544807
L		 1449 Elf_Internal_Sym *isym;
1450 const char *name;
252b5132
RH		 1451
1452 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1453 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1454
d9bc7a44 1455 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1456 {
d003868e
AM		 1457 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1458 abfd,
8f615d07 1459 r_symndx);
b34976b6 1460 return FALSE;
f5f31454
L		 1461 }
1462
252b5132 1463 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1464 {
1465 /* A local symbol. */
c2e61a4e
L		 1466 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1467 abfd, r_symndx);
1468 if (isym == NULL)
1469 return FALSE;
c25bc9fc
L		 1470
1471 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1472 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1473 {
9fff0c39 1474 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1475 if (h == NULL)
c2e61a4e 1476 return FALSE;
6bbec505 1477
c25bc9fc
L		 1478 /* Fake a STT_GNU_IFUNC symbol. */
1479 h->type = STT_GNU_IFUNC;
1480 h->def_regular = 1;
1481 h->ref_regular = 1;
1482 h->forced_local = 1;
1483 h->root.type = bfd_link_hash_defined;
1484 }
1485 else
1486 h = NULL;
1487 }
252b5132 1488 else
71cb9464 1489 {
4c544807 1490 isym = NULL;
71cb9464
L		 1491 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1492 while (h->root.type == bfd_link_hash_indirect
1493 || h->root.type == bfd_link_hash_warning)
1494 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1495 }
cbe950e9 1496
c25bc9fc
L		 1497 if (h != NULL)
1498 {
cbe950e9
L		 1499 /* Create the ifunc sections for static executables. If we
1500 never see an indirect function symbol nor we are building
1501 a static executable, those sections will be empty and
1502 won't appear in output. */
1503 switch (r_type)
1504 {
1505 default:
1506 break;
1507
1508 case R_386_32:
1509 case R_386_PC32:
1510 case R_386_PLT32:
1511 case R_386_GOT32:
1512 case R_386_GOTOFF:
9d4057ee
AM		 1513 if (htab->elf.dynobj == NULL)
1514 htab->elf.dynobj = abfd;
1515 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1516 return FALSE;
cbe950e9
L		 1517 break;
1518 }
1519
1520 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
1521 it here if it is defined in a non-shared object. */
1522 if (h->type == STT_GNU_IFUNC
1523 && h->def_regular)
1524 {
1525 /* It is referenced by a non-shared object. */
1526 h->ref_regular = 1;
7ae26bc1 1527 h->needs_plt = 1;
6bbec505 1528
cbe950e9
L		 1529 /* STT_GNU_IFUNC symbol must go through PLT. */
1530 h->plt.refcount += 1;
1531
1532 /* STT_GNU_IFUNC needs dynamic sections. */
1533 if (htab->elf.dynobj == NULL)
1534 htab->elf.dynobj = abfd;
1535
1536 switch (r_type)
1537 {
048cbda4 1538 default:
4c544807
L		 1539 if (h->root.root.string)
1540 name = h->root.root.string;
1541 else
1542 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1543 NULL);
048cbda4
L		 1544 (*_bfd_error_handler)
1545 (_("%B: relocation %s against STT_GNU_IFUNC "
1546 "symbol `%s' isn't handled by %s"), abfd,
1547 elf_howto_table[r_type].name,
4c544807 1548 name, __FUNCTION__);
048cbda4 1549 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1550 return FALSE;
cbe950e9
L		 1551
1552 case R_386_32:
710ab287
L		 1553 h->non_got_ref = 1;
1554 h->pointer_equality_needed = 1;
1555 if (info->shared)
1556 {
710ab287
L		 1557 /* We must copy these reloc types into the
1558 output file. Create a reloc section in
1559 dynobj and make room for this reloc. */
e03a8ed8
L		 1560 sreloc = _bfd_elf_create_ifunc_dyn_reloc
1561 (abfd, info, sec, sreloc,
1562 &((struct elf_i386_link_hash_entry *) h)->dyn_relocs);
710ab287 1563 if (sreloc == NULL)
c2e61a4e 1564 return FALSE;
710ab287
L		 1565 }
1566 break;
1567
cbe950e9
L		 1568 case R_386_PC32:
1569 h->non_got_ref = 1;
cbe950e9
L		 1570 break;
1571
1572 case R_386_PLT32:
1573 break;
1574
1575 case R_386_GOT32:
1576 case R_386_GOTOFF:
7afd84dc 1577 h->got.refcount += 1;
6de2ae4a
L		 1578 if (htab->elf.sgot == NULL
1579 && !_bfd_elf_create_got_section (htab->elf.dynobj,
cbe950e9 1580 info))
c2e61a4e 1581 return FALSE;
cbe950e9
L		 1582 break;
1583 }
1584
1585 continue;
1586 }
71cb9464 1587 }
252b5132 1588
142411ca
L		 1589 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1590 symtab_hdr, sym_hashes,
1591 &r_type, GOT_UNKNOWN,
23209a78 1592 rel, rel_end, h, r_symndx))
c2e61a4e 1593 return FALSE;
13ae64f3
JJ		 1594
1595 switch (r_type)
252b5132 1596 {
37e55690
JJ		 1597 case R_386_TLS_LDM:
1598 htab->tls_ldm_got.refcount += 1;
1599 goto create_got;
1600
1601 case R_386_PLT32:
1602 /* This symbol requires a procedure linkage table entry. We
1603 actually build the entry in adjust_dynamic_symbol,
1604 because this might be a case of linking PIC code which is
1605 never referenced by a dynamic object, in which case we
1606 don't need to generate a procedure linkage table entry
1607 after all. */
1608
1609 /* If this is a local symbol, we resolve it directly without
1610 creating a procedure linkage table entry. */
1611 if (h == NULL)
1612 continue;
1613
f5385ebf 1614 h->needs_plt = 1;
37e55690
JJ		 1615 h->plt.refcount += 1;
1616 break;
1617
13ae64f3 1618 case R_386_TLS_IE_32:
37e55690
JJ		 1619 case R_386_TLS_IE:
1620 case R_386_TLS_GOTIE:
1d85728f 1621 if (!info->executable)
13ae64f3 1622 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1623 /* Fall through */
1624
252b5132 1625 case R_386_GOT32:
13ae64f3 1626 case R_386_TLS_GD:
67a4f2b7
AO		 1627 case R_386_TLS_GOTDESC:
1628 case R_386_TLS_DESC_CALL:
252b5132 1629 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1630 {
1631 int tls_type, old_tls_type;
1632
1633 switch (r_type)
1634 {
1635 default:
1636 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1637 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1638 case R_386_TLS_GOTDESC:
1639 case R_386_TLS_DESC_CALL:
1640 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1641 case R_386_TLS_IE_32:
1642 if (ELF32_R_TYPE (rel->r_info) == r_type)
1643 tls_type = GOT_TLS_IE_NEG;
1644 else
ebcfb3c0
JJ		 1645 /* If this is a GD->IE transition, we may use either of
1646 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1647 tls_type = GOT_TLS_IE;
1648 break;
1649 case R_386_TLS_IE:
1650 case R_386_TLS_GOTIE:
1651 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1652 }
1653
1654 if (h != NULL)
1655 {
1656 h->got.refcount += 1;
1657 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1658 }
1659 else
1660 {
1661 bfd_signed_vma *local_got_refcounts;
1662
1663 /* This is a global offset table entry for a local symbol. */
1664 local_got_refcounts = elf_local_got_refcounts (abfd);
1665 if (local_got_refcounts == NULL)
1666 {
1667 bfd_size_type size;
1668
1669 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1670 size *= (sizeof (bfd_signed_vma)
1671 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1672 local_got_refcounts = (bfd_signed_vma *)
1673 bfd_zalloc (abfd, size);
13ae64f3 1674 if (local_got_refcounts == NULL)
c2e61a4e 1675 return FALSE;
13ae64f3 1676 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1677 elf_i386_local_tlsdesc_gotent (abfd)
1678 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1679 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1680 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1681 }
1682 local_got_refcounts[r_symndx] += 1;
1683 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1684 }
1685
37e55690
JJ		 1686 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1687 tls_type |= old_tls_type;
13ae64f3
JJ		 1688 /* If a TLS symbol is accessed using IE at least once,
1689 there is no point to use dynamic model for it. */
ebcfb3c0 1690 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1691 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1692 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1693 {
67a4f2b7 1694 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1695 tls_type = old_tls_type;
67a4f2b7
AO		 1696 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1697 && GOT_TLS_GD_ANY_P (tls_type))
1698 tls_type |= old_tls_type;
13ae64f3
JJ		 1699 else
1700 {
09a24cbf 1701 if (h)
4c544807
L		 1702 name = h->root.root.string;
1703 else
1704 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1705 NULL);
13ae64f3 1706 (*_bfd_error_handler)
d003868e 1707 (_("%B: `%s' accessed both as normal and "
55fd94b0 1708 "thread local symbol"),
4c544807 1709 abfd, name);
c2e61a4e 1710 return FALSE;
13ae64f3
JJ		 1711 }
1712 }
1713
1714 if (old_tls_type != tls_type)
1715 {
1716 if (h != NULL)
1717 elf_i386_hash_entry (h)->tls_type = tls_type;
1718 else
1719 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1720 }
1721 }
0ac8d2ca
AM		 1722 /* Fall through */
1723
1724 case R_386_GOTOFF:
1725 case R_386_GOTPC:
13ae64f3 1726 create_got:
6de2ae4a 1727 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 1728 {
1729 if (htab->elf.dynobj == NULL)
1730 htab->elf.dynobj = abfd;
6de2ae4a 1731 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1732 return FALSE;
0ac8d2ca 1733 }
37e55690
JJ		 1734 if (r_type != R_386_TLS_IE)
1735 break;
1736 /* Fall through */
252b5132 1737
37e55690
JJ		 1738 case R_386_TLS_LE_32:
1739 case R_386_TLS_LE:
1d85728f 1740 if (info->executable)
37e55690 1741 break;
bffbf940 1742 info->flags |= DF_STATIC_TLS;
b34976b6 1743 /* Fall through */
252b5132
RH		 1744
1745 case R_386_32:
1746 case R_386_PC32:
710ab287 1747 if (h != NULL && info->executable)
6725bdbf 1748 {
12d0ee4a 1749 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1750 need a copy reloc. We can't check reliably at this
1751 stage whether the section is read-only, as input
1752 sections have not yet been mapped to output sections.
1753 Tentatively set the flag for now, and correct in
1754 adjust_dynamic_symbol. */
f5385ebf 1755 h->non_got_ref = 1;
12d0ee4a
AM		 1756
1757 /* We may need a .plt entry if the function this reloc
1758 refers to is in a shared lib. */
51b64d56 1759 h->plt.refcount += 1;
c6585bbb 1760 if (r_type != R_386_PC32)
f5385ebf 1761 h->pointer_equality_needed = 1;
6725bdbf 1762 }
7843f00e 1763
252b5132 1764 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1765 against a global symbol, or a non PC relative reloc
1766 against a local symbol, then we need to copy the reloc
1767 into the shared library. However, if we are linking with
1768 -Bsymbolic, we do not need to copy a reloc against a
1769 global symbol which is defined in an object we are
1770 including in the link (i.e., DEF_REGULAR is set). At
1771 this point we have not seen all the input files, so it is
1772 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1773 later (it is never cleared). In case of a weak definition,
1774 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1775 a shared library. We account for that possibility below by
1f655a09
L		 1776 storing information in the relocs_copied field of the hash
1777 table entry. A similar situation occurs when creating
1778 shared libraries and symbol visibility changes render the
12d0ee4a 1779 symbol local.
56882138 1780
12d0ee4a
AM		 1781 If on the other hand, we are creating an executable, we
1782 may need to keep relocations for symbols satisfied by a
1783 dynamic library if we manage to avoid copy relocs for the
1784 symbol. */
1785 if ((info->shared
1786 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1787 && (r_type != R_386_PC32
12d0ee4a 1788 || (h != NULL
55255dae 1789 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1790 || h->root.type == bfd_link_hash_defweak
f5385ebf 1791 || !h->def_regular))))
a23b6845
AM		 1792 || (ELIMINATE_COPY_RELOCS
1793 && !info->shared
12d0ee4a
AM		 1794 && (sec->flags & SEC_ALLOC) != 0
1795 && h != NULL
12d0ee4a 1796 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1797 || !h->def_regular)))
252b5132 1798 {
e03a8ed8
L		 1799 struct elf_dyn_relocs *p;
1800 struct elf_dyn_relocs **head;
ec338859 1801
12d0ee4a
AM		 1802 /* We must copy these reloc types into the output file.
1803 Create a reloc section in dynobj and make room for
1804 this reloc. */
252b5132
RH		 1805 if (sreloc == NULL)
1806 {
0ac8d2ca
AM		 1807 if (htab->elf.dynobj == NULL)
1808 htab->elf.dynobj = abfd;
1809
83bac4b0
NC		 1810 sreloc = _bfd_elf_make_dynamic_reloc_section
1811 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1812
252b5132 1813 if (sreloc == NULL)
c2e61a4e 1814 return FALSE;
252b5132
RH		 1815 }
1816
0c715baa
AM		 1817 /* If this is a global symbol, we count the number of
1818 relocations we need for this symbol. */
1819 if (h != NULL)
252b5132 1820 {
ec338859 1821 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
0c715baa
AM		 1822 }
1823 else
1824 {
ec338859
AM		 1825 /* Track dynamic relocs needed for local syms too.
1826 We really need local syms available to do this
1827 easily. Oh well. */
87d72d41 1828 void **vpp;
ec338859 1829 asection *s;
87d72d41
AM		 1830
1831 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1832 abfd, r_symndx);
1833 if (isym == NULL)
1834 return FALSE;
1835
1836 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1837 if (s == NULL)
87d72d41 1838 s = sec;
ec338859 1839
e81d3500 1840 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1841 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1842 }
1843
1844 p = *head;
1845 if (p == NULL || p->sec != sec)
1846 {
1847 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1848 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1849 amt);
ec338859 1850 if (p == NULL)
c2e61a4e 1851 return FALSE;
ec338859
AM		 1852 p->next = *head;
1853 *head = p;
1854 p->sec = sec;
1855 p->count = 0;
1856 p->pc_count = 0;
252b5132 1857 }
ec338859
AM		 1858
1859 p->count += 1;
13ae64f3 1860 if (r_type == R_386_PC32)
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 }
1884 }
1885
b34976b6 1886 return TRUE;
252b5132
RH		 1887}
1888
1889/* Return the section that should be marked against GC for a given
1890 relocation. */
1891
1892static asection *
55fd94b0 1893elf_i386_gc_mark_hook (asection *sec,
07adf181 1894 struct bfd_link_info *info,
55fd94b0
AM		 1895 Elf_Internal_Rela *rel,
1896 struct elf_link_hash_entry *h,
1897 Elf_Internal_Sym *sym)
252b5132
RH		 1898{
1899 if (h != NULL)
07adf181
AM		 1900 switch (ELF32_R_TYPE (rel->r_info))
1901 {
1902 case R_386_GNU_VTINHERIT:
1903 case R_386_GNU_VTENTRY:
1904 return NULL;
1905 }
1906
1907 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1908}
1909
1910/* Update the got entry reference counts for the section being removed. */
1911
b34976b6 1912static bfd_boolean
55fd94b0
AM		 1913elf_i386_gc_sweep_hook (bfd *abfd,
1914 struct bfd_link_info *info,
1915 asection *sec,
1916 const Elf_Internal_Rela *relocs)
252b5132 1917{
4dfe6ac6 1918 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 1919 Elf_Internal_Shdr *symtab_hdr;
1920 struct elf_link_hash_entry **sym_hashes;
1921 bfd_signed_vma *local_got_refcounts;
1922 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1923
7dda2462
TG		 1924 if (info->relocatable)
1925 return TRUE;
1926
4dfe6ac6
NC		 1927 htab = elf_i386_hash_table (info);
1928 if (htab == NULL)
1929 return FALSE;
1930
ec338859 1931 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1932
0ffa91dd 1933 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 1934 sym_hashes = elf_sym_hashes (abfd);
1935 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1936
1937 relend = relocs + sec->reloc_count;
1938 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1939 {
1940 unsigned long r_symndx;
1941 unsigned int r_type;
1942 struct elf_link_hash_entry *h = NULL;
37e55690 1943
26e41594
AM		 1944 r_symndx = ELF32_R_SYM (rel->r_info);
1945 if (r_symndx >= symtab_hdr->sh_info)
1946 {
26e41594 1947 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1948 while (h->root.type == bfd_link_hash_indirect
1949 || h->root.type == bfd_link_hash_warning)
1950 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1951 }
bb1cb422
L		 1952 else
1953 {
1954 /* A local symbol. */
1955 Elf_Internal_Sym *isym;
1956
1957 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1958 abfd, r_symndx);
1959
1960 /* Check relocation against local STT_GNU_IFUNC symbol. */
1961 if (isym != NULL
1962 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1963 {
1964 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
1965 if (h == NULL)
1966 abort ();
1967 }
1968 }
0c715baa 1969
3db2e7dd
L		 1970 if (h)
1971 {
1972 struct elf_i386_link_hash_entry *eh;
1973 struct elf_dyn_relocs **pp;
1974 struct elf_dyn_relocs *p;
1975
1976 eh = (struct elf_i386_link_hash_entry *) h;
1977 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1978 if (p->sec == sec)
1979 {
1980 /* Everything must go for SEC. */
1981 *pp = p->next;
1982 break;
1983 }
1984 }
1985
26e41594 1986 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 1987 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1988 symtab_hdr, sym_hashes,
1989 &r_type, GOT_UNKNOWN,
23209a78 1990 rel, relend, h, r_symndx))
142411ca
L		 1991 return FALSE;
1992
26e41594
AM		 1993 switch (r_type)
1994 {
1995 case R_386_TLS_LDM:
4dfe6ac6
NC		 1996 if (htab->tls_ldm_got.refcount > 0)
1997 htab->tls_ldm_got.refcount -= 1;
26e41594 1998 break;
0c715baa 1999
26e41594 2000 case R_386_TLS_GD:
67a4f2b7
AO		 2001 case R_386_TLS_GOTDESC:
2002 case R_386_TLS_DESC_CALL:
26e41594
AM		 2003 case R_386_TLS_IE_32:
2004 case R_386_TLS_IE:
2005 case R_386_TLS_GOTIE:
2006 case R_386_GOT32:
2007 if (h != NULL)
2008 {
2009 if (h->got.refcount > 0)
2010 h->got.refcount -= 1;
bb1cb422
L		 2011 if (h->type == STT_GNU_IFUNC)
2012 {
2013 if (h->plt.refcount > 0)
2014 h->plt.refcount -= 1;
2015 }
26e41594
AM		 2016 }
2017 else if (local_got_refcounts != NULL)
2018 {
2019 if (local_got_refcounts[r_symndx] > 0)
2020 local_got_refcounts[r_symndx] -= 1;
2021 }
2022 break;
0c715baa 2023
26e41594
AM		 2024 case R_386_32:
2025 case R_386_PC32:
3db2e7dd
L		 2026 if (info->shared
2027 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM		 2028 break;
2029 /* Fall through */
6725bdbf 2030
26e41594
AM		 2031 case R_386_PLT32:
2032 if (h != NULL)
2033 {
2034 if (h->plt.refcount > 0)
2035 h->plt.refcount -= 1;
2036 }
2037 break;
dd5724d5 2038
bb1cb422
L		 2039 case R_386_GOTOFF:
2040 if (h != NULL && h->type == STT_GNU_IFUNC)
2041 {
2042 if (h->got.refcount > 0)
2043 h->got.refcount -= 1;
2044 if (h->plt.refcount > 0)
2045 h->plt.refcount -= 1;
2046 }
2047 break;
2048
26e41594
AM		 2049 default:
2050 break;
2051 }
2052 }
252b5132 2053
b34976b6 2054 return TRUE;
252b5132
RH		 2055}
2056
2057/* Adjust a symbol defined by a dynamic object and referenced by a
2058 regular object. The current definition is in some section of the
2059 dynamic object, but we're not including those sections. We have to
2060 change the definition to something the rest of the link can
2061 understand. */
2062
b34976b6 2063static bfd_boolean
55fd94b0
AM		 2064elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2065 struct elf_link_hash_entry *h)
252b5132 2066{
6725bdbf 2067 struct elf_i386_link_hash_table *htab;
252b5132 2068 asection *s;
252b5132 2069
cbe950e9
L		 2070 /* STT_GNU_IFUNC symbol must go through PLT. */
2071 if (h->type == STT_GNU_IFUNC)
2072 {
2073 if (h->plt.refcount <= 0)
2074 {
2075 h->plt.offset = (bfd_vma) -1;
2076 h->needs_plt = 0;
2077 }
2078 return TRUE;
2079 }
2080
252b5132
RH		 2081 /* If this is a function, put it in the procedure linkage table. We
2082 will fill in the contents of the procedure linkage table later,
2083 when we know the address of the .got section. */
2084 if (h->type == STT_FUNC
f5385ebf 2085 || h->needs_plt)
252b5132 2086 {
6725bdbf 2087 if (h->plt.refcount <= 0
9c7a29a3
AM		 2088 || SYMBOL_CALLS_LOCAL (info, h)
2089 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2090 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2091 {
2092 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2093 file, but the symbol was never referred to by a dynamic
2094 object, or if all references were garbage collected. In
2095 such a case, we don't actually need to build a procedure
2096 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2097 h->plt.offset = (bfd_vma) -1;
f5385ebf 2098 h->needs_plt = 0;
252b5132
RH		 2099 }
2100
b34976b6 2101 return TRUE;
252b5132 2102 }
6725bdbf
AM		 2103 else
2104 /* It's possible that we incorrectly decided a .plt reloc was
2105 needed for an R_386_PC32 reloc to a non-function sym in
2106 check_relocs. We can't decide accurately between function and
2107 non-function syms in check-relocs; Objects loaded later in
2108 the link may change h->type. So fix it now. */
bbd7ec4a 2109 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2110
2111 /* If this is a weak symbol, and there is a real definition, the
2112 processor independent code will have arranged for us to see the
2113 real definition first, and we can just use the same value. */
f6e332e6 2114 if (h->u.weakdef != NULL)
252b5132 2115 {
f6e332e6
AM		 2116 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2117 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2118 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2119 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2120 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2121 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2122 return TRUE;
252b5132
RH		 2123 }
2124
2125 /* This is a reference to a symbol defined by a dynamic object which
2126 is not a function. */
2127
2128 /* If we are creating a shared library, we must presume that the
2129 only references to the symbol are via the global offset table.
2130 For such cases we need not do anything here; the relocations will
2131 be handled correctly by relocate_section. */
2132 if (info->shared)
b34976b6 2133 return TRUE;
252b5132 2134
7843f00e
ILT		 2135 /* If there are no references to this symbol that do not use the
2136 GOT, we don't need to generate a copy reloc. */
f5385ebf 2137 if (!h->non_got_ref)
b34976b6 2138 return TRUE;
7843f00e 2139
8bd621d8
AM		 2140 /* If -z nocopyreloc was given, we won't generate them either. */
2141 if (info->nocopyreloc)
2142 {
f5385ebf 2143 h->non_got_ref = 0;
b34976b6 2144 return TRUE;
8bd621d8
AM		 2145 }
2146
643796e3 2147 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2148 if (htab == NULL)
2149 return FALSE;
643796e3
DJ		 2150
2151 /* If there aren't any dynamic relocs in read-only sections, then
2152 we can keep the dynamic relocs and avoid the copy reloc. This
2153 doesn't work on VxWorks, where we can not have dynamic relocations
2154 (other than copy and jump slot relocations) in an executable. */
23209a78
RM		 2155 if (ELIMINATE_COPY_RELOCS
2156 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2157 {
a23b6845 2158 struct elf_i386_link_hash_entry * eh;
e03a8ed8 2159 struct elf_dyn_relocs *p;
ebe50bae 2160
a23b6845
AM		 2161 eh = (struct elf_i386_link_hash_entry *) h;
2162 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2163 {
2164 s = p->sec->output_section;
2165 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2166 break;
2167 }
2168
a23b6845
AM		 2169 if (p == NULL)
2170 {
f5385ebf 2171 h->non_got_ref = 0;
a23b6845
AM		 2172 return TRUE;
2173 }
ebe50bae
AM		 2174 }
2175
252b5132
RH		 2176 /* We must allocate the symbol in our .dynbss section, which will
2177 become part of the .bss section of the executable. There will be
2178 an entry for this symbol in the .dynsym section. The dynamic
2179 object will contain position independent code, so all references
2180 from the dynamic object to this symbol will go through the global
2181 offset table. The dynamic linker will use the .dynsym entry to
2182 determine the address it must put in the global offset table, so
2183 both the dynamic object and the regular object will refer to the
2184 same memory location for the variable. */
2185
252b5132
RH		 2186 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2187 copy the initial value out of the dynamic object and into the
0ac8d2ca 2188 runtime process image. */
1d7e9d18 2189 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2190 {
eea6121a 2191 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2192 h->needs_copy = 1;
252b5132
RH		 2193 }
2194
0ac8d2ca 2195 s = htab->sdynbss;
252b5132 2196
027297b7 2197 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH		 2198}
2199
6725bdbf 2200/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2201 dynamic relocs. */
6725bdbf 2202
b34976b6 2203static bfd_boolean
eb4ff4d6 2204elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2205{
2206 struct bfd_link_info *info;
2207 struct elf_i386_link_hash_table *htab;
5a15f56f 2208 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2209 struct elf_dyn_relocs *p;
25e762b9 2210 unsigned plt_entry_size;
6725bdbf 2211
e92d460e 2212 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2213 return TRUE;
6725bdbf 2214
cbe950e9 2215 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2216
6725bdbf
AM		 2217 info = (struct bfd_link_info *) inf;
2218 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2219 if (htab == NULL)
2220 return FALSE;
6725bdbf 2221
25e762b9
RM		 2222 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2223
cbe950e9
L		 2224 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2225 here if it is defined and referenced in a non-shared object. */
2226 if (h->type == STT_GNU_IFUNC
2227 && h->def_regular)
25e762b9
RM		 2228 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
2229 plt_entry_size, 4);
cbe950e9
L		 2230 else if (htab->elf.dynamic_sections_created
2231 && h->plt.refcount > 0)
6725bdbf 2232 {
5a15f56f
AM		 2233 /* Make sure this symbol is output as a dynamic symbol.
2234 Undefined weak syms won't yet be marked as dynamic. */
2235 if (h->dynindx == -1
f5385ebf 2236 && !h->forced_local)
5a15f56f 2237 {
c152c796 2238 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2239 return FALSE;
5a15f56f
AM		 2240 }
2241
4e795f50
AM		 2242 if (info->shared
2243 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2244 {
6de2ae4a 2245 asection *s = htab->elf.splt;
6725bdbf 2246
ced53ee5
AM		 2247 /* If this is the first .plt entry, make room for the special
2248 first entry. */
eea6121a 2249 if (s->size == 0)
25e762b9 2250 s->size += plt_entry_size;
6725bdbf 2251
eea6121a 2252 h->plt.offset = s->size;
6725bdbf 2253
ced53ee5
AM		 2254 /* If this symbol is not defined in a regular file, and we are
2255 not generating a shared library, then set the symbol to this
2256 location in the .plt. This is required to make function
2257 pointers compare as equal between the normal executable and
2258 the shared library. */
2259 if (! info->shared
f5385ebf 2260 && !h->def_regular)
ced53ee5
AM		 2261 {
2262 h->root.u.def.section = s;
2263 h->root.u.def.value = h->plt.offset;
2264 }
6725bdbf 2265
ced53ee5 2266 /* Make room for this entry. */
25e762b9 2267 s->size += plt_entry_size;
6725bdbf 2268
ced53ee5
AM		 2269 /* We also need to make an entry in the .got.plt section, which
2270 will be placed in the .got section by the linker script. */
6de2ae4a 2271 htab->elf.sgotplt->size += 4;
6725bdbf 2272
6725bdbf 2273 /* We also need to make an entry in the .rel.plt section. */
6de2ae4a 2274 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
e1f98742 2275 htab->elf.srelplt->reloc_count++;
eac338cf 2276
23209a78
RM		 2277 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
2278 && !info->shared)
eac338cf
PB		 2279 {
2280 /* VxWorks has a second set of relocations for each PLT entry
2281 in executables. They go in a separate relocation section,
2282 which is processed by the kernel loader. */
2283
2284 /* There are two relocations for the initial PLT entry: an
2285 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2286 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2287
25e762b9 2288 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2289 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2290
2291 /* There are two extra relocations for each subsequent PLT entry:
2292 an R_386_32 relocation for the GOT entry, and an R_386_32
2293 relocation for the PLT entry. */
2294
2295 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2296 }
6725bdbf 2297 }
ced53ee5
AM		 2298 else
2299 {
51b64d56 2300 h->plt.offset = (bfd_vma) -1;
f5385ebf 2301 h->needs_plt = 0;
ced53ee5 2302 }
6725bdbf
AM		 2303 }
2304 else
2305 {
51b64d56 2306 h->plt.offset = (bfd_vma) -1;
f5385ebf 2307 h->needs_plt = 0;
6725bdbf
AM		 2308 }
2309
67a4f2b7
AO		 2310 eh->tlsdesc_got = (bfd_vma) -1;
2311
37e55690 2312 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2313 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2314 if (h->got.refcount > 0
1d85728f 2315 && info->executable
13ae64f3 2316 && h->dynindx == -1
37e55690 2317 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2318 h->got.offset = (bfd_vma) -1;
13ae64f3 2319 else if (h->got.refcount > 0)
6725bdbf 2320 {
0ac8d2ca 2321 asection *s;
b34976b6 2322 bfd_boolean dyn;
13ae64f3 2323 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2324
5a15f56f
AM		 2325 /* Make sure this symbol is output as a dynamic symbol.
2326 Undefined weak syms won't yet be marked as dynamic. */
2327 if (h->dynindx == -1
f5385ebf 2328 && !h->forced_local)
5a15f56f 2329 {
c152c796 2330 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2331 return FALSE;
5a15f56f
AM		 2332 }
2333
6de2ae4a 2334 s = htab->elf.sgot;
67a4f2b7
AO		 2335 if (GOT_TLS_GDESC_P (tls_type))
2336 {
6de2ae4a 2337 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2338 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2339 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2340 h->got.offset = (bfd_vma) -2;
2341 }
2342 if (! GOT_TLS_GDESC_P (tls_type)
2343 || GOT_TLS_GD_P (tls_type))
2344 {
2345 h->got.offset = s->size;
2346 s->size += 4;
2347 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2348 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2349 s->size += 4;
2350 }
ebe50bae 2351 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2352 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2353 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2354 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2355 need two), R_386_TLS_GD needs one if local symbol and two if
2356 global. */
2357 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2358 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2359 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2360 || (tls_type & GOT_TLS_IE))
6de2ae4a 2361 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2362 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2363 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2364 else if (! GOT_TLS_GDESC_P (tls_type)
2365 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2366 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 2367 && (info->shared
2368 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2369 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2370 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2371 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2372 }
2373 else
51b64d56 2374 h->got.offset = (bfd_vma) -1;
6725bdbf 2375
5a15f56f 2376 if (eh->dyn_relocs == NULL)
b34976b6 2377 return TRUE;
5a15f56f 2378
0c715baa
AM		 2379 /* In the shared -Bsymbolic case, discard space allocated for
2380 dynamic pc-relative relocs against symbols which turn out to be
2381 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2382 space for pc-relative relocs that have become local due to symbol
2383 visibility changes. */
0c715baa
AM		 2384
2385 if (info->shared)
5a15f56f 2386 {
09695f56
AM		 2387 /* The only reloc that uses pc_count is R_386_PC32, which will
2388 appear on a call or on something like ".long foo - .". We
2389 want calls to protected symbols to resolve directly to the
2390 function rather than going via the plt. If people want
2391 function pointer comparisons to work as expected then they
2392 should avoid writing assembly like ".long foo - .". */
2393 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2394 {
e03a8ed8 2395 struct elf_dyn_relocs **pp;
0c715baa
AM		 2396
2397 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2398 {
2399 p->count -= p->pc_count;
2400 p->pc_count = 0;
2401 if (p->count == 0)
2402 *pp = p->next;
2403 else
2404 pp = &p->next;
2405 }
5a15f56f 2406 }
4e795f50 2407
23209a78 2408 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2409 {
e03a8ed8 2410 struct elf_dyn_relocs **pp;
3348747a
NS		 2411 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2412 {
2413 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2414 *pp = p->next;
2415 else
2416 pp = &p->next;
2417 }
2418 }
2419
4e795f50 2420 /* Also discard relocs on undefined weak syms with non-default
3348747a 2421 visibility. */
22d606e9 2422 if (eh->dyn_relocs != NULL
4e795f50 2423 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2424 {
2425 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2426 eh->dyn_relocs = NULL;
2427
2428 /* Make sure undefined weak symbols are output as a dynamic
2429 symbol in PIEs. */
2430 else if (h->dynindx == -1
2431 && !h->forced_local)
2432 {
2433 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2434 return FALSE;
2435 }
2436 }
0c715baa 2437 }
a23b6845 2438 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2439 {
2440 /* For the non-shared case, discard space for relocs against
2441 symbols which turn out to need copy relocs or are not
2442 dynamic. */
2443
f5385ebf
AM		 2444 if (!h->non_got_ref
2445 && ((h->def_dynamic
2446 && !h->def_regular)
ebe50bae 2447 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2448 && (h->root.type == bfd_link_hash_undefweak
2449 || h->root.type == bfd_link_hash_undefined))))
2450 {
2451 /* Make sure this symbol is output as a dynamic symbol.
2452 Undefined weak syms won't yet be marked as dynamic. */
2453 if (h->dynindx == -1
f5385ebf 2454 && !h->forced_local)
0c715baa 2455 {
c152c796 2456 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2457 return FALSE;
0c715baa 2458 }
5a15f56f 2459
0c715baa
AM		 2460 /* If that succeeded, we know we'll be keeping all the
2461 relocs. */
2462 if (h->dynindx != -1)
2463 goto keep;
2464 }
2465
2466 eh->dyn_relocs = NULL;
2467
ec338859 2468 keep: ;
5a15f56f
AM		 2469 }
2470
0c715baa
AM		 2471 /* Finally, allocate space. */
2472 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2473 {
e7c33416
NC		 2474 asection *sreloc;
2475
cbe950e9 2476 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2477
2478 BFD_ASSERT (sreloc != NULL);
eea6121a 2479 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2480 }
2481
b34976b6 2482 return TRUE;
6725bdbf
AM		 2483}
2484
c25bc9fc
L		 2485/* Allocate space in .plt, .got and associated reloc sections for
2486 local dynamic relocs. */
2487
2488static bfd_boolean
2489elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2490{
2491 struct elf_link_hash_entry *h
2492 = (struct elf_link_hash_entry *) *slot;
2493
2494 if (h->type != STT_GNU_IFUNC
2495 || !h->def_regular
2496 || !h->ref_regular
2497 || !h->forced_local
2498 || h->root.type != bfd_link_hash_defined)
2499 abort ();
2500
2501 return elf_i386_allocate_dynrelocs (h, inf);
2502}
2503
0c715baa
AM		 2504/* Find any dynamic relocs that apply to read-only sections. */
2505
b34976b6 2506static bfd_boolean
eb4ff4d6 2507elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2508{
2509 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2510 struct elf_dyn_relocs *p;
0c715baa 2511
aa715242
L		 2512 /* Skip local IFUNC symbols. */
2513 if (h->forced_local && h->type == STT_GNU_IFUNC)
2514 return TRUE;
2515
0c715baa
AM		 2516 eh = (struct elf_i386_link_hash_entry *) h;
2517 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2518 {
2519 asection *s = p->sec->output_section;
2520
2521 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2522 {
2523 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2524
2525 info->flags |= DF_TEXTREL;
2526
b70321a2
L		 2527 if (info->warn_shared_textrel && info->shared)
2528 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
2529 p->sec->owner, h->root.root.string,
2530 p->sec);
2531
0c715baa 2532 /* Not an error, just cut short the traversal. */
b34976b6 2533 return FALSE;
0c715baa
AM		 2534 }
2535 }
b34976b6 2536 return TRUE;
0c715baa
AM		 2537}
2538
daa67607
L		 2539/* Convert
2540 mov foo@GOT(%reg), %reg
2541 to
2542 lea foo@GOTOFF(%reg), %reg
2543 with the local symbol, foo. */
2544
2545static bfd_boolean
2546elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
2547 struct bfd_link_info *link_info)
2548{
2549 Elf_Internal_Shdr *symtab_hdr;
2550 Elf_Internal_Rela *internal_relocs;
2551 Elf_Internal_Rela *irel, *irelend;
2552 bfd_byte *contents;
2553 struct elf_i386_link_hash_table *htab;
2554 bfd_boolean changed_contents;
2555 bfd_boolean changed_relocs;
2556 bfd_signed_vma *local_got_refcounts;
2557
2558 /* Don't even try to convert non-ELF outputs. */
2559 if (!is_elf_hash_table (link_info->hash))
2560 return FALSE;
2561
2562 /* Nothing to do if there are no codes or no relocations. */
2563 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
2564 || sec->reloc_count == 0)
2565 return TRUE;
2566
2567 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2568
2569 /* Load the relocations for this section. */
2570 internal_relocs = (_bfd_elf_link_read_relocs
2571 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2572 link_info->keep_memory));
2573 if (internal_relocs == NULL)
2574 return FALSE;
2575
2576 htab = elf_i386_hash_table (link_info);
2577 changed_contents = FALSE;
2578 changed_relocs = FALSE;
2579 local_got_refcounts = elf_local_got_refcounts (abfd);
2580
2581 /* Get the section contents. */
2582 if (elf_section_data (sec)->this_hdr.contents != NULL)
2583 contents = elf_section_data (sec)->this_hdr.contents;
2584 else
2585 {
2586 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2587 goto error_return;
2588 }
2589
2590 irelend = internal_relocs + sec->reloc_count;
2591 for (irel = internal_relocs; irel < irelend; irel++)
2592 {
2593 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2594 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2595 unsigned int indx;
2596 struct elf_link_hash_entry *h;
2597
2598 if (r_type != R_386_GOT32)
2599 continue;
2600
2601 /* Get the symbol referred to by the reloc. */
2602 if (r_symndx < symtab_hdr->sh_info)
2603 {
2604 Elf_Internal_Sym *isym;
2605
2606 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2607 abfd, r_symndx);
2608
2609 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2610 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
2611 && bfd_get_8 (input_bfd,
2612 contents + irel->r_offset - 2) == 0x8b)
2613 {
2614 bfd_put_8 (output_bfd, 0x8d,
2615 contents + irel->r_offset - 2);
2616 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2617 if (local_got_refcounts != NULL
2618 && local_got_refcounts[r_symndx] > 0)
2619 local_got_refcounts[r_symndx] -= 1;
2620 changed_contents = TRUE;
2621 changed_relocs = TRUE;
2622 }
2623 continue;
2624 }
2625
2626 indx = r_symndx - symtab_hdr->sh_info;
2627 h = elf_sym_hashes (abfd)[indx];
2628 BFD_ASSERT (h != NULL);
2629
2630 while (h->root.type == bfd_link_hash_indirect
2631 || h->root.type == bfd_link_hash_warning)
2632 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2633
3f65f599
L		 2634 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
2635 optimizing _DYNAMIC since ld.so may use its link-time address. */
daa67607
L		 2636 if (h->def_regular
2637 && h->type != STT_GNU_IFUNC
9637f6ef 2638 && h != htab->elf.hdynamic
daa67607
L		 2639 && SYMBOL_REFERENCES_LOCAL (link_info, h)
2640 && bfd_get_8 (input_bfd,
2641 contents + irel->r_offset - 2) == 0x8b)
2642 {
2643 bfd_put_8 (output_bfd, 0x8d,
2644 contents + irel->r_offset - 2);
2645 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2646 if (h->got.refcount > 0)
2647 h->got.refcount -= 1;
2648 changed_contents = TRUE;
2649 changed_relocs = TRUE;
2650 }
2651 }
2652
2653 if (contents != NULL
2654 && elf_section_data (sec)->this_hdr.contents != contents)
2655 {
2656 if (!changed_contents && !link_info->keep_memory)
2657 free (contents);
2658 else
2659 {
2660 /* Cache the section contents for elf_link_input_bfd. */
2661 elf_section_data (sec)->this_hdr.contents = contents;
2662 }
2663 }
2664
2665 if (elf_section_data (sec)->relocs != internal_relocs)
2666 {
2667 if (!changed_relocs)
2668 free (internal_relocs);
2669 else
2670 elf_section_data (sec)->relocs = internal_relocs;
2671 }
2672
2673 return TRUE;
2674
2675 error_return:
2676 if (contents != NULL
2677 && elf_section_data (sec)->this_hdr.contents != contents)
2678 free (contents);
2679 if (internal_relocs != NULL
2680 && elf_section_data (sec)->relocs != internal_relocs)
2681 free (internal_relocs);
2682 return FALSE;
2683}
2684
252b5132
RH		 2685/* Set the sizes of the dynamic sections. */
2686
b34976b6 2687static bfd_boolean
23209a78 2688elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2689{
6725bdbf 2690 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2691 bfd *dynobj;
2692 asection *s;
b34976b6 2693 bfd_boolean relocs;
0c715baa 2694 bfd *ibfd;
252b5132 2695
6725bdbf 2696 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2697 if (htab == NULL)
2698 return FALSE;
ebe50bae 2699 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2700 if (dynobj == NULL)
2701 abort ();
252b5132 2702
ebe50bae 2703 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2704 {
2705 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2706 if (info->executable)
252b5132 2707 {
3d4d4302 2708 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 2709 if (s == NULL)
2710 abort ();
eea6121a 2711 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2712 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2713 }
161d71a6 2714 }
6725bdbf 2715
0c715baa
AM		 2716 /* Set up .got offsets for local syms, and space for local dynamic
2717 relocs. */
2718 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 2719 {
2720 bfd_signed_vma *local_got;
2721 bfd_signed_vma *end_local_got;
13ae64f3 2722 char *local_tls_type;
67a4f2b7 2723 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2724 bfd_size_type locsymcount;
2725 Elf_Internal_Shdr *symtab_hdr;
2726 asection *srel;
6725bdbf 2727
0ffa91dd 2728 if (! is_i386_elf (ibfd))
161d71a6 2729 continue;
6725bdbf 2730
0c715baa
AM		 2731 for (s = ibfd->sections; s != NULL; s = s->next)
2732 {
e03a8ed8 2733 struct elf_dyn_relocs *p;
0c715baa 2734
daa67607
L		 2735 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2736 return FALSE;
2737
e03a8ed8 2738 for (p = ((struct elf_dyn_relocs *)
e81d3500 2739 elf_section_data (s)->local_dynrel);
ec338859
AM		 2740 p != NULL;
2741 p = p->next)
0c715baa 2742 {
ec338859
AM		 2743 if (!bfd_is_abs_section (p->sec)
2744 && bfd_is_abs_section (p->sec->output_section))
2745 {
2746 /* Input section has been discarded, either because
2747 it is a copy of a linkonce section or due to
2748 linker script /DISCARD/, so we'll be discarding
2749 the relocs too. */
2750 }
23209a78 2751 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2752 && strcmp (p->sec->output_section->name,
2753 ".tls_vars") == 0)
2754 {
2755 /* Relocations in vxworks .tls_vars sections are
2756 handled specially by the loader. */
2757 }
248866a8 2758 else if (p->count != 0)
ec338859
AM		 2759 {
2760 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2761 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2762 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2763 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2764 {
2765 info->flags |= DF_TEXTREL;
2766 if (info->warn_shared_textrel && info->shared)
2767 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
2768 p->sec->owner, p->sec);
b70321a2 2769 }
ec338859 2770 }
0c715baa
AM		 2771 }
2772 }
2773
2774 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2775 if (!local_got)
2776 continue;
6725bdbf 2777
0ffa91dd 2778 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2779 locsymcount = symtab_hdr->sh_info;
2780 end_local_got = local_got + locsymcount;
13ae64f3 2781 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2782 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2783 s = htab->elf.sgot;
2784 srel = htab->elf.srelgot;
67a4f2b7
AO		 2785 for (; local_got < end_local_got;
2786 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2787 {
67a4f2b7 2788 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2789 if (*local_got > 0)
6725bdbf 2790 {
67a4f2b7
AO		 2791 if (GOT_TLS_GDESC_P (*local_tls_type))
2792 {
6de2ae4a 2793 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2794 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2795 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2796 *local_got = (bfd_vma) -2;
2797 }
2798 if (! GOT_TLS_GDESC_P (*local_tls_type)
2799 || GOT_TLS_GD_P (*local_tls_type))
2800 {
2801 *local_got = s->size;
2802 s->size += 4;
2803 if (GOT_TLS_GD_P (*local_tls_type)
2804 || *local_tls_type == GOT_TLS_IE_BOTH)
2805 s->size += 4;
2806 }
13ae64f3 2807 if (info->shared
67a4f2b7 2808 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2809 || (*local_tls_type & GOT_TLS_IE))
2810 {
2811 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2812 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2813 else if (GOT_TLS_GD_P (*local_tls_type)
2814 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2815 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2816 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2817 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2818 }
6725bdbf 2819 }
161d71a6
L		 2820 else
2821 *local_got = (bfd_vma) -1;
6725bdbf 2822 }
252b5132 2823 }
6725bdbf 2824
13ae64f3
JJ		 2825 if (htab->tls_ldm_got.refcount > 0)
2826 {
2827 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2828 relocs. */
6de2ae4a
L		 2829 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2830 htab->elf.sgot->size += 8;
2831 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2832 }
2833 else
2834 htab->tls_ldm_got.offset = -1;
2835
0c715baa
AM		 2836 /* Allocate global sym .plt and .got entries, and space for global
2837 sym dynamic relocs. */
eb4ff4d6 2838 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2839
c25bc9fc
L		 2840 /* Allocate .plt and .got entries, and space for local symbols. */
2841 htab_traverse (htab->loc_hash_table,
2842 elf_i386_allocate_local_dynrelocs,
2843 info);
2844
67a4f2b7
AO		 2845 /* For every jump slot reserved in the sgotplt, reloc_count is
2846 incremented. However, when we reserve space for TLS descriptors,
2847 it's not incremented, so in order to compute the space reserved
2848 for them, it suffices to multiply the reloc count by the jump
e1f98742 2849 slot size.
caa0075c 2850
e1f98742
L		 2851 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2852 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2853 if (htab->elf.srelplt)
e1f98742
L		 2854 {
2855 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2856 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2857 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2858 }
2859 else if (htab->elf.irelplt)
2860 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2861
67a4f2b7 2862
a7b16ceb
L		 2863 if (htab->elf.sgotplt)
2864 {
e28df02b
L		 2865 struct elf_link_hash_entry *got;
2866 got = elf_link_hash_lookup (elf_hash_table (info),
2867 "_GLOBAL_OFFSET_TABLE_",
2868 FALSE, FALSE, FALSE);
2869
a7b16ceb 2870 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2871 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
e28df02b
L		 2872 if ((got == NULL
2873 || !got->ref_regular_nonweak)
2874 && (htab->elf.sgotplt->size
2875 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2876 && (htab->elf.splt == NULL
2877 || htab->elf.splt->size == 0)
2878 && (htab->elf.sgot == NULL
2879 || htab->elf.sgot->size == 0)
2880 && (htab->elf.iplt == NULL
2881 || htab->elf.iplt->size == 0)
2882 && (htab->elf.igotplt == NULL
2883 || htab->elf.igotplt->size == 0))
2884 htab->elf.sgotplt->size = 0;
2885 }
2886
9a2a56cc
AM		 2887
2888 if (htab->plt_eh_frame != NULL
2889 && htab->elf.splt != NULL
2890 && htab->elf.splt->size != 0
2891 && !bfd_is_abs_section (htab->elf.splt->output_section)
2892 && _bfd_elf_eh_frame_present (info))
2893 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
2894
5a15f56f
AM		 2895 /* We now have determined the sizes of the various dynamic sections.
2896 Allocate memory for them. */
b34976b6 2897 relocs = FALSE;
252b5132
RH		 2898 for (s = dynobj->sections; s != NULL; s = s->next)
2899 {
eac338cf
PB		 2900 bfd_boolean strip_section = TRUE;
2901
252b5132
RH		 2902 if ((s->flags & SEC_LINKER_CREATED) == 0)
2903 continue;
2904
6de2ae4a 2905 if (s == htab->elf.splt
9a2a56cc 2906 || s == htab->elf.sgot)
252b5132 2907 {
6725bdbf
AM		 2908 /* Strip this section if we don't need it; see the
2909 comment below. */
eac338cf
PB		 2910 /* We'd like to strip these sections if they aren't needed, but if
2911 we've exported dynamic symbols from them we must leave them.
2912 It's too late to tell BFD to get rid of the symbols. */
2913
7325306f 2914 if (htab->elf.hplt != NULL)
eac338cf 2915 strip_section = FALSE;
252b5132 2916 }
9a2a56cc
AM		 2917 else if (s == htab->elf.sgotplt
2918 || s == htab->elf.iplt
2919 || s == htab->elf.igotplt
2920 || s == htab->plt_eh_frame
2921 || s == htab->sdynbss)
2922 {
2923 /* Strip these too. */
2924 }
0112cd26 2925 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2926 {
6de2ae4a
L		 2927 if (s->size != 0
2928 && s != htab->elf.srelplt
2929 && s != htab->srelplt2)
b34976b6 2930 relocs = TRUE;
252b5132 2931
0ac8d2ca
AM		 2932 /* We use the reloc_count field as a counter if we need
2933 to copy relocs into the output file. */
5ae0bfb6 2934 s->reloc_count = 0;
252b5132 2935 }
6725bdbf 2936 else
252b5132
RH		 2937 {
2938 /* It's not one of our sections, so don't allocate space. */
2939 continue;
2940 }
2941
c456f082 2942 if (s->size == 0)
252b5132 2943 {
0ac8d2ca
AM		 2944 /* If we don't need this section, strip it from the
2945 output file. This is mostly to handle .rel.bss and
2946 .rel.plt. We must create both sections in
2947 create_dynamic_sections, because they must be created
2948 before the linker maps input sections to output
2949 sections. The linker does that before
2950 adjust_dynamic_symbol is called, and it is that
2951 function which decides whether anything needs to go
2952 into these sections. */
c456f082
AM		 2953 if (strip_section)
2954 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2955 continue;
2956 }
2957
c456f082
AM		 2958 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2959 continue;
2960
f69da49f
AM		 2961 /* Allocate memory for the section contents. We use bfd_zalloc
2962 here in case unused entries are not reclaimed before the
2963 section's contents are written out. This should not happen,
2964 but this way if it does, we get a R_386_NONE reloc instead
2965 of garbage. */
a50b1753 2966 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 2967 if (s->contents == NULL)
b34976b6 2968 return FALSE;
252b5132
RH		 2969 }
2970
e41b3a13 2971 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 2972 && htab->plt_eh_frame->contents != NULL)
2973 {
2974 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
2975 sizeof (elf_i386_eh_frame_plt));
2976 bfd_put_32 (dynobj, htab->elf.splt->size,
2977 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
2978 }
e41b3a13 2979
ebe50bae 2980 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2981 {
2982 /* Add some entries to the .dynamic section. We fill in the
2983 values later, in elf_i386_finish_dynamic_sections, but we
2984 must add the entries now so that we get the correct size for
2985 the .dynamic section. The DT_DEBUG entry is filled in by the
2986 dynamic linker and used by the debugger. */
dc810e39 2987#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2988 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2989
36af4a4e 2990 if (info->executable)
252b5132 2991 {
dc810e39 2992 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2993 return FALSE;
252b5132
RH		 2994 }
2995
6de2ae4a 2996 if (htab->elf.splt->size != 0)
252b5132 2997 {
dc810e39
AM		 2998 if (!add_dynamic_entry (DT_PLTGOT, 0)
2999 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3000 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3001 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3002 return FALSE;
252b5132
RH		 3003 }
3004
3005 if (relocs)
3006 {
dc810e39
AM		 3007 if (!add_dynamic_entry (DT_REL, 0)
3008 || !add_dynamic_entry (DT_RELSZ, 0)
3009 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3010 return FALSE;
252b5132 3011
0c715baa
AM		 3012 /* If any dynamic relocs apply to a read-only section,
3013 then we need a DT_TEXTREL entry. */
248866a8 3014 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3015 elf_link_hash_traverse (&htab->elf,
3016 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3017
3018 if ((info->flags & DF_TEXTREL) != 0)
3019 {
3020 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3021 return FALSE;
0c715baa 3022 }
252b5132 3023 }
23209a78 3024 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3025 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3026 return FALSE;
252b5132 3027 }
dc810e39 3028#undef add_dynamic_entry
252b5132 3029
b34976b6 3030 return TRUE;
252b5132
RH		 3031}
3032
67a4f2b7
AO		 3033static bfd_boolean
3034elf_i386_always_size_sections (bfd *output_bfd,
3035 struct bfd_link_info *info)
3036{
3037 asection *tls_sec = elf_hash_table (info)->tls_sec;
3038
3039 if (tls_sec)
3040 {
3041 struct elf_link_hash_entry *tlsbase;
3042
3043 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3044 "_TLS_MODULE_BASE_",
3045 FALSE, FALSE, FALSE);
3046
3047 if (tlsbase && tlsbase->type == STT_TLS)
3048 {
4dfe6ac6 3049 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3050 struct bfd_link_hash_entry *bh = NULL;
3051 const struct elf_backend_data *bed
3052 = get_elf_backend_data (output_bfd);
3053
4dfe6ac6
NC		 3054 htab = elf_i386_hash_table (info);
3055 if (htab == NULL)
3056 return FALSE;
3057
67a4f2b7
AO		 3058 if (!(_bfd_generic_link_add_one_symbol
3059 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3060 tls_sec, 0, NULL, FALSE,
3061 bed->collect, &bh)))
3062 return FALSE;
9f03412a 3063
4dfe6ac6 3064 htab->tls_module_base = bh;
9f03412a 3065
67a4f2b7
AO		 3066 tlsbase = (struct elf_link_hash_entry *)bh;
3067 tlsbase->def_regular = 1;
3068 tlsbase->other = STV_HIDDEN;
3069 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3070 }
3071 }
3072
3073 return TRUE;
3074}
3075
38701953
AM		 3076/* Set the correct type for an x86 ELF section. We do this by the
3077 section name, which is a hack, but ought to work. */
3078
b34976b6 3079static bfd_boolean
55fd94b0
AM		 3080elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3081 Elf_Internal_Shdr *hdr,
3082 asection *sec)
38701953 3083{
91d6fa6a 3084 const char *name;
38701953
AM		 3085
3086 name = bfd_get_section_name (abfd, sec);
3087
3088 /* This is an ugly, but unfortunately necessary hack that is
3089 needed when producing EFI binaries on x86. It tells
3090 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3091 containing ELF relocation info. We need this hack in order to
3092 be able to generate ELF binaries that can be translated into
3093 EFI applications (which are essentially COFF objects). Those
3094 files contain a COFF ".reloc" section inside an ELFNN object,
3095 which would normally cause BFD to segfault because it would
3096 attempt to interpret this section as containing relocation
3097 entries for section "oc". With this hack enabled, ".reloc"
3098 will be treated as a normal data section, which will avoid the
3099 segfault. However, you won't be able to create an ELFNN binary
3100 with a section named "oc" that needs relocations, but that's
3101 the kind of ugly side-effects you get when detecting section
3102 types based on their names... In practice, this limitation is
3103 unlikely to bite. */
3104 if (strcmp (name, ".reloc") == 0)
3105 hdr->sh_type = SHT_PROGBITS;
3106
b34976b6 3107 return TRUE;
38701953
AM		 3108}
3109
9f03412a
AO		 3110/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3111 executables. Rather than setting it to the beginning of the TLS
3112 section, we have to set it to the end. This function may be called
3113 multiple times, it is idempotent. */
3114
3115static void
eb4ff4d6 3116elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3117{
4dfe6ac6 3118 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3119 struct bfd_link_hash_entry *base;
3120
3121 if (!info->executable)
3122 return;
3123
4dfe6ac6
NC		 3124 htab = elf_i386_hash_table (info);
3125 if (htab == NULL)
3126 return;
9f03412a 3127
4dfe6ac6
NC		 3128 base = htab->tls_module_base;
3129 if (base == NULL)
9f03412a
AO		 3130 return;
3131
4dfe6ac6 3132 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3133}
3134
13ae64f3
JJ		 3135/* Return the base VMA address which should be subtracted from real addresses
3136 when resolving @dtpoff relocation.
3137 This is PT_TLS segment p_vaddr. */
3138
3139static bfd_vma
eb4ff4d6 3140elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3141{
e1918d23
AM		 3142 /* If tls_sec is NULL, we should have signalled an error already. */
3143 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3144 return 0;
e1918d23 3145 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3146}
3147
3148/* Return the relocation value for @tpoff relocation
3149 if STT_TLS virtual address is ADDRESS. */
3150
3151static bfd_vma
eb4ff4d6 3152elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3153{
e1918d23 3154 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3155 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3156 bfd_vma static_tls_size;
13ae64f3 3157
e1918d23
AM		 3158 /* If tls_sec is NULL, we should have signalled an error already. */
3159 if (htab->tls_sec == NULL)
6a30718d 3160 return 0;
7dc98aea
RO		 3161
3162 /* Consider special static TLS alignment requirements. */
3163 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3164 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3165}
3166
252b5132
RH		 3167/* Relocate an i386 ELF section. */
3168
b34976b6 3169static bfd_boolean
55fd94b0
AM		 3170elf_i386_relocate_section (bfd *output_bfd,
3171 struct bfd_link_info *info,
3172 bfd *input_bfd,
3173 asection *input_section,
3174 bfd_byte *contents,
3175 Elf_Internal_Rela *relocs,
3176 Elf_Internal_Sym *local_syms,
3177 asection **local_sections)
252b5132 3178{
6725bdbf 3179 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3180 Elf_Internal_Shdr *symtab_hdr;
3181 struct elf_link_hash_entry **sym_hashes;
3182 bfd_vma *local_got_offsets;
67a4f2b7 3183 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3184 Elf_Internal_Rela *rel;
3185 Elf_Internal_Rela *relend;
3348747a 3186 bfd_boolean is_vxworks_tls;
25e762b9 3187 unsigned plt_entry_size;
252b5132 3188
0ffa91dd 3189 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3190
6725bdbf 3191 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3192 if (htab == NULL)
3193 return FALSE;
0ffa91dd 3194 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3195 sym_hashes = elf_sym_hashes (input_bfd);
3196 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3197 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3198 /* We have to handle relocations in vxworks .tls_vars sections
3199 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3200 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3201 && info->shared
3348747a
NS		 3202 && !strcmp (input_section->output_section->name,
3203 ".tls_vars"));
252b5132 3204
eb4ff4d6 3205 elf_i386_set_tls_module_base (info);
9f03412a 3206
25e762b9
RM		 3207 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3208
252b5132
RH		 3209 rel = relocs;
3210 relend = relocs + input_section->reloc_count;
3211 for (; rel < relend; rel++)
3212 {
13ae64f3 3213 unsigned int r_type;
252b5132
RH		 3214 reloc_howto_type *howto;
3215 unsigned long r_symndx;
3216 struct elf_link_hash_entry *h;
3217 Elf_Internal_Sym *sym;
3218 asection *sec;
67a4f2b7 3219 bfd_vma off, offplt;
252b5132 3220 bfd_vma relocation;
b34976b6 3221 bfd_boolean unresolved_reloc;
252b5132 3222 bfd_reloc_status_type r;
1b452ec6 3223 unsigned int indx;
13ae64f3 3224 int tls_type;
252b5132
RH		 3225
3226 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3227 if (r_type == R_386_GNU_VTINHERIT
3228 || r_type == R_386_GNU_VTENTRY)
252b5132 3229 continue;
dc47f327 3230
55fd94b0 3231 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3232 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3233 >= R_386_ext - R_386_standard)
3234 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3235 >= R_386_irelative - R_386_ext))
252b5132 3236 {
6ba842b6 3237 (*_bfd_error_handler)
d003868e
AM		 3238 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3239 input_bfd, input_section, r_type);
252b5132 3240 bfd_set_error (bfd_error_bad_value);
b34976b6 3241 return FALSE;
252b5132 3242 }
1b452ec6 3243 howto = elf_howto_table + indx;
252b5132
RH		 3244
3245 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3246 h = NULL;
3247 sym = NULL;
3248 sec = NULL;
b34976b6 3249 unresolved_reloc = FALSE;
252b5132
RH		 3250 if (r_symndx < symtab_hdr->sh_info)
3251 {
3252 sym = local_syms + r_symndx;
3253 sec = local_sections[r_symndx];
3254 relocation = (sec->output_section->vma
3255 + sec->output_offset
3256 + sym->st_value);
ab96bf03
AM		 3257
3258 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3259 && ((sec->flags & SEC_MERGE) != 0
3260 || (info->relocatable
3261 && sec->output_offset != 0)))
f8df10f4 3262 {
f8df10f4 3263 bfd_vma addend;
4a335f3d 3264 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3265
4a335f3d 3266 switch (howto->size)
f8df10f4 3267 {
4a335f3d
AM		 3268 case 0:
3269 addend = bfd_get_8 (input_bfd, where);
3270 if (howto->pc_relative)
3271 {
3272 addend = (addend ^ 0x80) - 0x80;
3273 addend += 1;
3274 }
3275 break;
3276 case 1:
3277 addend = bfd_get_16 (input_bfd, where);
3278 if (howto->pc_relative)
3279 {
3280 addend = (addend ^ 0x8000) - 0x8000;
3281 addend += 2;
3282 }
3283 break;
3284 case 2:
3285 addend = bfd_get_32 (input_bfd, where);
3286 if (howto->pc_relative)
3287 {
3288 addend = (addend ^ 0x80000000) - 0x80000000;
3289 addend += 4;
3290 }
3291 break;
3292 default:
3293 abort ();
f8df10f4
JJ		 3294 }
3295
ab96bf03
AM		 3296 if (info->relocatable)
3297 addend += sec->output_offset;
3298 else
3299 {
3300 asection *msec = sec;
3301 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3302 addend);
3303 addend -= relocation;
3304 addend += msec->output_section->vma + msec->output_offset;
3305 }
4a335f3d
AM		 3306
3307 switch (howto->size)
3308 {
3309 case 0:
16a10388 3310 /* FIXME: overflow checks. */
4a335f3d
AM		 3311 if (howto->pc_relative)
3312 addend -= 1;
3313 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3314 break;
3315 case 1:
3316 if (howto->pc_relative)
3317 addend -= 2;
3318 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3319 break;
3320 case 2:
3321 if (howto->pc_relative)
3322 addend -= 4;
3323 bfd_put_32 (input_bfd, addend, where);
3324 break;
3325 }
f8df10f4 3326 }
1f85278f
L		 3327 else if (!info->relocatable
3328 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3329 {
3330 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3331 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3332 FALSE);
c25bc9fc
L		 3333 if (h == NULL)
3334 abort ();
3335
23209a78 3336 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3337 h->root.u.def.value = sym->st_value;
3338 h->root.u.def.section = sec;
3339 }
252b5132
RH		 3340 }
3341 else
3342 {
3d540e93 3343 bfd_boolean warned ATTRIBUTE_UNUSED;
ffb2e45b 3344
b2a8e766
AM		 3345 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3346 r_symndx, symtab_hdr, sym_hashes,
3347 h, sec, relocation,
3348 unresolved_reloc, warned);
252b5132
RH		 3349 }
3350
dbaa2011 3351 if (sec != NULL && discarded_section (sec))
0672748a 3352 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3353 rel, 1, relend, howto, 0, contents);
9635fe29 3354
ab96bf03
AM		 3355 if (info->relocatable)
3356 continue;
3357
cbe950e9
L		 3358 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3359 it here if it is defined in a non-shared object. */
3360 if (h != NULL
3361 && h->type == STT_GNU_IFUNC
3362 && h->def_regular)
3363 {
3364 asection *plt, *gotplt, *base_got;
3365 bfd_vma plt_index;
4c544807 3366 const char *name;
cbe950e9
L		 3367
3368 if ((input_section->flags & SEC_ALLOC) == 0
3369 || h->plt.offset == (bfd_vma) -1)
3370 abort ();
3371
3372 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3373 if (htab->elf.splt != NULL)
cbe950e9 3374 {
6de2ae4a
L		 3375 plt = htab->elf.splt;
3376 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3377 }
3378 else
3379 {
6de2ae4a
L		 3380 plt = htab->elf.iplt;
3381 gotplt = htab->elf.igotplt;
cbe950e9
L		 3382 }
3383
3384 relocation = (plt->output_section->vma
3385 + plt->output_offset + h->plt.offset);
3386
3387 switch (r_type)
3388 {
3389 default:
4c544807
L		 3390 if (h->root.root.string)
3391 name = h->root.root.string;
3392 else
3393 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3394 NULL);
cbe950e9
L		 3395 (*_bfd_error_handler)
3396 (_("%B: relocation %s against STT_GNU_IFUNC "
3397 "symbol `%s' isn't handled by %s"), input_bfd,
3398 elf_howto_table[r_type].name,
4c544807 3399 name, __FUNCTION__);
cbe950e9
L		 3400 bfd_set_error (bfd_error_bad_value);
3401 return FALSE;
3402
3403 case R_386_32:
710ab287 3404 /* Generate dynamic relcoation only when there is a
c293fa49 3405 non-GOT reference in a shared object. */
710ab287
L		 3406 if (info->shared && h->non_got_ref)
3407 {
3408 Elf_Internal_Rela outrel;
3409 bfd_byte *loc;
3410 asection *sreloc;
3411 bfd_vma offset;
3412
c25bc9fc
L		 3413 /* Need a dynamic relocation to get the real function
3414 adddress. */
710ab287
L		 3415 offset = _bfd_elf_section_offset (output_bfd,
3416 info,
3417 input_section,
3418 rel->r_offset);
3419 if (offset == (bfd_vma) -1
3420 || offset == (bfd_vma) -2)
3421 abort ();
3422
3423 outrel.r_offset = (input_section->output_section->vma
3424 + input_section->output_offset
3425 + offset);
3426
3427 if (h->dynindx == -1
44c4ea11
L		 3428 || h->forced_local
3429 || info->executable)
710ab287
L		 3430 {
3431 /* This symbol is resolved locally. */
56b8aada
L		 3432 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3433 bfd_put_32 (output_bfd,
3434 (h->root.u.def.value
3435 + h->root.u.def.section->output_section->vma
3436 + h->root.u.def.section->output_offset),
3437 contents + offset);
710ab287
L		 3438 }
3439 else
56b8aada 3440 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3441
6de2ae4a 3442 sreloc = htab->elf.irelifunc;
710ab287
L		 3443 loc = sreloc->contents;
3444 loc += (sreloc->reloc_count++
3445 * sizeof (Elf32_External_Rel));
3446 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3447
3448 /* If this reloc is against an external symbol, we
3449 do not want to fiddle with the addend. Otherwise,
3450 we need to include the symbol value so that it
3451 becomes an addend for the dynamic reloc. For an
3452 internal symbol, we have updated addend. */
56b8aada 3453 continue;
710ab287 3454 }
d59a60e9 3455 /* FALLTHROUGH */
cbe950e9
L		 3456 case R_386_PC32:
3457 case R_386_PLT32:
3458 goto do_relocation;
3459
3460 case R_386_GOT32:
6de2ae4a 3461 base_got = htab->elf.sgot;
cbe950e9
L		 3462 off = h->got.offset;
3463
7afd84dc 3464 if (base_got == NULL)
cbe950e9
L		 3465 abort ();
3466
7afd84dc 3467 if (off == (bfd_vma) -1)
cbe950e9 3468 {
7afd84dc
L		 3469 /* We can't use h->got.offset here to save state, or
3470 even just remember the offset, as finish_dynamic_symbol
3471 would use that as offset into .got. */
6bbec505 3472
6de2ae4a 3473 if (htab->elf.splt != NULL)
7afd84dc 3474 {
25e762b9 3475 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3476 off = (plt_index + 3) * 4;
6de2ae4a 3477 base_got = htab->elf.sgotplt;
7afd84dc 3478 }
cbe950e9
L		 3479 else
3480 {
25e762b9 3481 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3482 off = plt_index * 4;
6de2ae4a 3483 base_got = htab->elf.igotplt;
7afd84dc
L		 3484 }
3485
3486 if (h->dynindx == -1
3487 || h->forced_local
3488 || info->symbolic)
3489 {
3490 /* This references the local defitionion. We must
3491 initialize this entry in the global offset table.
3492 Since the offset must always be a multiple of 8,
3493 we use the least significant bit to record
3494 whether we have initialized it already.
3495
3496 When doing a dynamic link, we create a .rela.got
3497 relocation entry to initialize the value. This
3498 is done in the finish_dynamic_symbol routine. */
3499 if ((off & 1) != 0)
3500 off &= ~1;
3501 else
3502 {
3503 bfd_put_32 (output_bfd, relocation,
3504 base_got->contents + off);
3505 h->got.offset |= 1;
3506 }
cbe950e9 3507 }
cbe950e9 3508
7afd84dc 3509 relocation = off;
cbe950e9 3510
7afd84dc 3511 /* Adjust for static executables. */
6de2ae4a 3512 if (htab->elf.splt == NULL)
7afd84dc
L		 3513 relocation += gotplt->output_offset;
3514 }
3515 else
0018b0a3
L		 3516 {
3517 relocation = (base_got->output_section->vma
3518 + base_got->output_offset + off
3519 - gotplt->output_section->vma
3520 - gotplt->output_offset);
3521 /* Adjust for static executables. */
6de2ae4a 3522 if (htab->elf.splt == NULL)
0018b0a3
L		 3523 relocation += gotplt->output_offset;
3524 }
3525
cbe950e9
L		 3526 goto do_relocation;
3527
3528 case R_386_GOTOFF:
3529 relocation -= (gotplt->output_section->vma
3530 + gotplt->output_offset);
3531 goto do_relocation;
3532 }
3533 }
3534
252b5132
RH		 3535 switch (r_type)
3536 {
3537 case R_386_GOT32:
3538 /* Relocation is to the entry for this symbol in the global
3539 offset table. */
6de2ae4a 3540 if (htab->elf.sgot == NULL)
ffb2e45b 3541 abort ();
252b5132
RH		 3542
3543 if (h != NULL)
3544 {
b34976b6 3545 bfd_boolean dyn;
252b5132
RH		 3546
3547 off = h->got.offset;
ebe50bae 3548 dyn = htab->elf.dynamic_sections_created;
26e41594 3549 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3550 || (info->shared
586119b3 3551 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3552 || (ELF_ST_VISIBILITY (h->other)
3553 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3554 {
3555 /* This is actually a static link, or it is a
3556 -Bsymbolic link and the symbol is defined
3557 locally, or the symbol was forced to be local
3558 because of a version file. We must initialize
3559 this entry in the global offset table. Since the
3560 offset must always be a multiple of 4, we use the
3561 least significant bit to record whether we have
3562 initialized it already.
3563
3564 When doing a dynamic link, we create a .rel.got
3565 relocation entry to initialize the value. This
3566 is done in the finish_dynamic_symbol routine. */
3567 if ((off & 1) != 0)
3568 off &= ~1;
3569 else
3570 {
3571 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3572 htab->elf.sgot->contents + off);
252b5132
RH		 3573 h->got.offset |= 1;
3574 }
3575 }
8c694914 3576 else
b34976b6 3577 unresolved_reloc = FALSE;
252b5132
RH		 3578 }
3579 else
3580 {
ffb2e45b
AM		 3581 if (local_got_offsets == NULL)
3582 abort ();
252b5132
RH		 3583
3584 off = local_got_offsets[r_symndx];
3585
3586 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3587 the least significant bit to record whether we have
3588 already generated the necessary reloc. */
252b5132
RH		 3589 if ((off & 1) != 0)
3590 off &= ~1;
3591 else
3592 {
6725bdbf 3593 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3594 htab->elf.sgot->contents + off);
252b5132
RH		 3595
3596 if (info->shared)
3597 {
947216bf
AM		 3598 asection *s;
3599 Elf_Internal_Rela outrel;
3600 bfd_byte *loc;
252b5132 3601
6de2ae4a 3602 s = htab->elf.srelgot;
947216bf 3603 if (s == NULL)
ffb2e45b 3604 abort ();
252b5132 3605
6de2ae4a
L		 3606 outrel.r_offset = (htab->elf.sgot->output_section->vma
3607 + htab->elf.sgot->output_offset
252b5132
RH		 3608 + off);
3609 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
947216bf
AM		 3610 loc = s->contents;
3611 loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3612 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 3613 }
3614
3615 local_got_offsets[r_symndx] |= 1;
3616 }
252b5132
RH		 3617 }
3618
ffb2e45b
AM		 3619 if (off >= (bfd_vma) -2)
3620 abort ();
3621
6de2ae4a
L		 3622 relocation = htab->elf.sgot->output_section->vma
3623 + htab->elf.sgot->output_offset + off
3624 - htab->elf.sgotplt->output_section->vma
3625 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3626 break;
3627
3628 case R_386_GOTOFF:
3629 /* Relocation is relative to the start of the global offset
3630 table. */
3631
90f487df
L		 3632 /* Check to make sure it isn't a protected function symbol
3633 for shared library since it may not be local when used
41bed6dd
L		 3634 as function address. We also need to make sure that a
3635 symbol is defined locally. */
3636 if (info->shared && h)
90f487df 3637 {
41bed6dd
L		 3638 if (!h->def_regular)
3639 {
3640 const char *v;
3641
3642 switch (ELF_ST_VISIBILITY (h->other))
3643 {
3644 case STV_HIDDEN:
3645 v = _("hidden symbol");
3646 break;
3647 case STV_INTERNAL:
3648 v = _("internal symbol");
3649 break;
3650 case STV_PROTECTED:
3651 v = _("protected symbol");
3652 break;
3653 default:
3654 v = _("symbol");
3655 break;
3656 }
3657
3658 (*_bfd_error_handler)
3659 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3660 input_bfd, v, h->root.root.string);
3661 bfd_set_error (bfd_error_bad_value);
3662 return FALSE;
3663 }
3664 else if (!info->executable
bdb892b9 3665 && !SYMBOLIC_BIND (info, h)
41bed6dd
L		 3666 && h->type == STT_FUNC
3667 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3668 {
3669 (*_bfd_error_handler)
3670 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3671 input_bfd, h->root.root.string);
3672 bfd_set_error (bfd_error_bad_value);
3673 return FALSE;
3674 }
90f487df
L		 3675 }
3676
8c37241b
JJ		 3677 /* Note that sgot is not involved in this
3678 calculation. We always want the start of .got.plt. If we
3679 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3680 permitted by the ABI, we might have to change this
3681 calculation. */
6de2ae4a
L		 3682 relocation -= htab->elf.sgotplt->output_section->vma
3683 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3684 break;
3685
3686 case R_386_GOTPC:
3687 /* Use global offset table as symbol value. */
6de2ae4a
L		 3688 relocation = htab->elf.sgotplt->output_section->vma
3689 + htab->elf.sgotplt->output_offset;
b34976b6 3690 unresolved_reloc = FALSE;
252b5132
RH		 3691 break;
3692
3693 case R_386_PLT32:
3694 /* Relocation is to the entry for this symbol in the
3695 procedure linkage table. */
3696
dd5724d5 3697 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3698 without using the procedure linkage table. */
252b5132
RH		 3699 if (h == NULL)
3700 break;
3701
dd5724d5 3702 if (h->plt.offset == (bfd_vma) -1
6de2ae4a 3703 || htab->elf.splt == NULL)
252b5132
RH		 3704 {
3705 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3706 happens when statically linking PIC code, or when
3707 using -Bsymbolic. */
252b5132
RH		 3708 break;
3709 }
3710
6de2ae4a
L		 3711 relocation = (htab->elf.splt->output_section->vma
3712 + htab->elf.splt->output_offset
252b5132 3713 + h->plt.offset);
b34976b6 3714 unresolved_reloc = FALSE;
252b5132
RH		 3715 break;
3716
3717 case R_386_32:
3718 case R_386_PC32:
3348747a
NS		 3719 if ((input_section->flags & SEC_ALLOC) == 0
3720 || is_vxworks_tls)
ec338859
AM		 3721 break;
3722
12d0ee4a 3723 if ((info->shared
ef5aade5
L		 3724 && (h == NULL
3725 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3726 || h->root.type != bfd_link_hash_undefweak)
12d0ee4a 3727 && (r_type != R_386_PC32
f6c52c13 3728 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3729 || (ELIMINATE_COPY_RELOCS
3730 && !info->shared
12d0ee4a
AM		 3731 && h != NULL
3732 && h->dynindx != -1
f5385ebf
AM		 3733 && !h->non_got_ref
3734 && ((h->def_dynamic
3735 && !h->def_regular)
28d0b90e 3736 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3737 || h->root.type == bfd_link_hash_undefined)))
252b5132 3738 {
947216bf
AM		 3739 Elf_Internal_Rela outrel;
3740 bfd_byte *loc;
b34976b6 3741 bfd_boolean skip, relocate;
0c715baa 3742 asection *sreloc;
252b5132
RH		 3743
3744 /* When generating a shared object, these relocations
3745 are copied into the output file to be resolved at run
3746 time. */
3747
b34976b6
AM		 3748 skip = FALSE;
3749 relocate = FALSE;
252b5132 3750
c629eae0
JJ		 3751 outrel.r_offset =
3752 _bfd_elf_section_offset (output_bfd, info, input_section,
3753 rel->r_offset);
3754 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3755 skip = TRUE;
0bb2d96a 3756 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3757 skip = TRUE, relocate = TRUE;
252b5132
RH		 3758 outrel.r_offset += (input_section->output_section->vma
3759 + input_section->output_offset);
3760
3761 if (skip)
0bb2d96a 3762 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3763 else if (h != NULL
3764 && h->dynindx != -1
3765 && (r_type == R_386_PC32
3766 || !info->shared
55255dae 3767 || !SYMBOLIC_BIND (info, h)
f5385ebf 3768 || !h->def_regular))
0bb2d96a 3769 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3770 else
3771 {
5a15f56f 3772 /* This symbol is local, or marked to become local. */
b34976b6 3773 relocate = TRUE;
5a15f56f 3774 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3775 }
3776
cbe950e9 3777 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3778
62d78908
L		 3779 if (sreloc == NULL || sreloc->contents == NULL)
3780 {
3781 r = bfd_reloc_notsupported;
3782 goto check_relocation_error;
3783 }
0c715baa 3784
947216bf
AM		 3785 loc = sreloc->contents;
3786 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
e7c33416 3787
0c715baa 3788 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 3789
3790 /* If this reloc is against an external symbol, we do
3791 not want to fiddle with the addend. Otherwise, we
3792 need to include the symbol value so that it becomes
3793 an addend for the dynamic reloc. */
0f88be7a 3794 if (! relocate)
252b5132
RH		 3795 continue;
3796 }
252b5132
RH		 3797 break;
3798
37e55690 3799 case R_386_TLS_IE:
1d85728f 3800 if (!info->executable)
37e55690 3801 {
947216bf
AM		 3802 Elf_Internal_Rela outrel;
3803 bfd_byte *loc;
37e55690 3804 asection *sreloc;
37e55690
JJ		 3805
3806 outrel.r_offset = rel->r_offset
3807 + input_section->output_section->vma
3808 + input_section->output_offset;
3809 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3810 sreloc = elf_section_data (input_section)->sreloc;
3811 if (sreloc == NULL)
3812 abort ();
947216bf
AM		 3813 loc = sreloc->contents;
3814 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 3815 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3816 }
3817 /* Fall through */
3818
13ae64f3 3819 case R_386_TLS_GD:
67a4f2b7
AO		 3820 case R_386_TLS_GOTDESC:
3821 case R_386_TLS_DESC_CALL:
13ae64f3 3822 case R_386_TLS_IE_32:
37e55690 3823 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3824 tls_type = GOT_UNKNOWN;
3825 if (h == NULL && local_got_offsets)
3826 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3827 else if (h != NULL)
142411ca 3828 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3829 if (tls_type == GOT_TLS_IE)
3830 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3831
3832 if (! elf_i386_tls_transition (info, input_bfd,
3833 input_section, contents,
3834 symtab_hdr, sym_hashes,
3835 &r_type, tls_type, rel,
4c544807 3836 relend, h, r_symndx))
142411ca 3837 return FALSE;
13ae64f3
JJ		 3838
3839 if (r_type == R_386_TLS_LE_32)
3840 {
82e51918 3841 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3842 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3843 {
142411ca 3844 unsigned int type;
13ae64f3
JJ		 3845 bfd_vma roff;
3846
3847 /* GD->LE transition. */
13ae64f3 3848 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3849 if (type == 0x04)
3850 {
3851 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3852 Change it into:
3853 movl %gs:0, %eax; subl $foo@tpoff, %eax
3854 (6 byte form of subl). */
13ae64f3
JJ		 3855 memcpy (contents + rel->r_offset - 3,
3856 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3857 roff = rel->r_offset + 5;
13ae64f3
JJ		 3858 }
3859 else
3860 {
142411ca
L		 3861 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3862 Change it into:
3863 movl %gs:0, %eax; subl $foo@tpoff, %eax
3864 (6 byte form of subl). */
3865 memcpy (contents + rel->r_offset - 2,
3866 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3867 roff = rel->r_offset + 6;
13ae64f3 3868 }
eb4ff4d6 3869 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3870 contents + roff);
a3fadc9a 3871 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 3872 rel++;
3873 continue;
3874 }
67a4f2b7
AO		 3875 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3876 {
3877 /* GDesc -> LE transition.
3878 It's originally something like:
3879 leal x@tlsdesc(%ebx), %eax
3880
3881 leal x@ntpoff, %eax
3882
3883 Registers other than %eax may be set up here. */
3884
142411ca 3885 unsigned int val;
67a4f2b7
AO		 3886 bfd_vma roff;
3887
67a4f2b7 3888 roff = rel->r_offset;
67a4f2b7 3889 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3890
3891 /* Now modify the instruction as appropriate. */
3892 /* aoliva FIXME: remove the above and xor the byte
3893 below with 0x86. */
3894 bfd_put_8 (output_bfd, val ^ 0x86,
3895 contents + roff - 1);
eb4ff4d6 3896 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 3897 contents + roff);
3898 continue;
3899 }
3900 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3901 {
3902 /* GDesc -> LE transition.
3903 It's originally:
3904 call *(%eax)
3905 Turn it into:
142411ca 3906 xchg %ax,%ax */
67a4f2b7 3907
67a4f2b7 3908 bfd_vma roff;
6bbec505 3909
67a4f2b7 3910 roff = rel->r_offset;
10efb593 3911 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3912 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3913 continue;
3914 }
37e55690 3915 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 3916 {
142411ca 3917 unsigned int val;
13ae64f3
JJ		 3918
3919 /* IE->LE transition:
37e55690
JJ		 3920 Originally it can be one of:
3921 movl foo, %eax
3922 movl foo, %reg
3923 addl foo, %reg
3924 We change it into:
3925 movl $foo, %eax
3926 movl $foo, %reg
3927 addl $foo, %reg. */
37e55690 3928 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 3929 if (val == 0xa1)
3930 {
3931 /* movl foo, %eax. */
55fd94b0
AM		 3932 bfd_put_8 (output_bfd, 0xb8,
3933 contents + rel->r_offset - 1);
37e55690 3934 }
299bf759 3935 else
37e55690 3936 {
142411ca
L		 3937 unsigned int type;
3938
55fd94b0
AM		 3939 type = bfd_get_8 (input_bfd,
3940 contents + rel->r_offset - 2);
299bf759 3941 switch (type)
26e41594 3942 {
299bf759
L		 3943 case 0x8b:
3944 /* movl */
299bf759
L		 3945 bfd_put_8 (output_bfd, 0xc7,
3946 contents + rel->r_offset - 2);
3947 bfd_put_8 (output_bfd,
3948 0xc0 | ((val >> 3) & 7),
3949 contents + rel->r_offset - 1);
3950 break;
3951 case 0x03:
3952 /* addl */
299bf759
L		 3953 bfd_put_8 (output_bfd, 0x81,
3954 contents + rel->r_offset - 2);
3955 bfd_put_8 (output_bfd,
3956 0xc0 | ((val >> 3) & 7),
3957 contents + rel->r_offset - 1);
3958 break;
3959 default:
3960 BFD_FAIL ();
3961 break;
26e41594 3962 }
37e55690 3963 }
eb4ff4d6 3964 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3965 contents + rel->r_offset);
3966 continue;
3967 }
3968 else
3969 {
3970 unsigned int val, type;
3971
3972 /* {IE_32,GOTIE}->LE transition:
3973 Originally it can be one of:
13ae64f3 3974 subl foo(%reg1), %reg2
13ae64f3 3975 movl foo(%reg1), %reg2
37e55690 3976 addl foo(%reg1), %reg2
13ae64f3
JJ		 3977 We change it into:
3978 subl $foo, %reg2
37e55690
JJ		 3979 movl $foo, %reg2 (6 byte form)
3980 addl $foo, %reg2. */
13ae64f3
JJ		 3981 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3982 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 3983 if (type == 0x8b)
3984 {
3985 /* movl */
13ae64f3
JJ		 3986 bfd_put_8 (output_bfd, 0xc7,
3987 contents + rel->r_offset - 2);
3988 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3989 contents + rel->r_offset - 1);
3990 }
3991 else if (type == 0x2b)
3992 {
3993 /* subl */
13ae64f3
JJ		 3994 bfd_put_8 (output_bfd, 0x81,
3995 contents + rel->r_offset - 2);
3996 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3997 contents + rel->r_offset - 1);
3998 }
37e55690
JJ		 3999 else if (type == 0x03)
4000 {
4001 /* addl */
4002 bfd_put_8 (output_bfd, 0x81,
4003 contents + rel->r_offset - 2);
4004 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4005 contents + rel->r_offset - 1);
4006 }
13ae64f3
JJ		 4007 else
4008 BFD_FAIL ();
37e55690 4009 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4010 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4011 contents + rel->r_offset);
4012 else
eb4ff4d6 4013 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4014 contents + rel->r_offset);
13ae64f3
JJ		 4015 continue;
4016 }
4017 }
4018
6de2ae4a 4019 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4020 abort ();
4021
4022 if (h != NULL)
67a4f2b7
AO		 4023 {
4024 off = h->got.offset;
4025 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4026 }
13ae64f3
JJ		 4027 else
4028 {
4029 if (local_got_offsets == NULL)
4030 abort ();
4031
4032 off = local_got_offsets[r_symndx];
67a4f2b7 4033 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4034 }
4035
4036 if ((off & 1) != 0)
4037 off &= ~1;
26e41594 4038 else
13ae64f3 4039 {
947216bf
AM		 4040 Elf_Internal_Rela outrel;
4041 bfd_byte *loc;
91d6fa6a 4042 int dr_type;
67a4f2b7 4043 asection *sreloc;
13ae64f3 4044
6de2ae4a 4045 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4046 abort ();
4047
67a4f2b7
AO		 4048 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4049
4050 if (GOT_TLS_GDESC_P (tls_type))
4051 {
4052 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4053 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4054 <= htab->elf.sgotplt->size);
4055 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4056 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4057 + offplt
4058 + htab->sgotplt_jump_table_size);
6de2ae4a 4059 sreloc = htab->elf.srelplt;
67a4f2b7 4060 loc = sreloc->contents;
5ae0bfb6
RS		 4061 loc += (htab->next_tls_desc_index++
4062 * sizeof (Elf32_External_Rel));
67a4f2b7
AO		 4063 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
4064 <= sreloc->contents + sreloc->size);
4065 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4066 if (indx == 0)
4067 {
4068 BFD_ASSERT (! unresolved_reloc);
4069 bfd_put_32 (output_bfd,
eb4ff4d6 4070 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4071 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4072 + htab->sgotplt_jump_table_size + 4);
4073 }
4074 else
4075 {
4076 bfd_put_32 (output_bfd, 0,
6de2ae4a 4077 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4078 + htab->sgotplt_jump_table_size + 4);
4079 }
4080 }
4081
6de2ae4a 4082 sreloc = htab->elf.srelgot;
67a4f2b7 4083
6de2ae4a
L		 4084 outrel.r_offset = (htab->elf.sgot->output_section->vma
4085 + htab->elf.sgot->output_offset + off);
13ae64f3 4086
67a4f2b7 4087 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4088 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4089 else if (GOT_TLS_GDESC_P (tls_type))
4090 goto dr_done;
37e55690
JJ		 4091 else if (tls_type == GOT_TLS_IE_POS)
4092 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4093 else
4094 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4095
37e55690 4096 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4097 bfd_put_32 (output_bfd,
4098 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4099 htab->elf.sgot->contents + off);
37e55690 4100 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4101 bfd_put_32 (output_bfd,
eb4ff4d6 4102 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4103 htab->elf.sgot->contents + off);
67a4f2b7 4104 else if (dr_type != R_386_TLS_DESC)
c366c25e 4105 bfd_put_32 (output_bfd, 0,
6de2ae4a 4106 htab->elf.sgot->contents + off);
13ae64f3 4107 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7
AO		 4108
4109 loc = sreloc->contents;
4110 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
4111 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
4112 <= sreloc->contents + sreloc->size);
13ae64f3
JJ		 4113 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4114
67a4f2b7 4115 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4116 {
4117 if (indx == 0)
4118 {
82e51918 4119 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4120 bfd_put_32 (output_bfd,
eb4ff4d6 4121 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4122 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4123 }
4124 else
4125 {
4126 bfd_put_32 (output_bfd, 0,
6de2ae4a 4127 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4128 outrel.r_info = ELF32_R_INFO (indx,
4129 R_386_TLS_DTPOFF32);
4130 outrel.r_offset += 4;
67a4f2b7 4131 sreloc->reloc_count++;
947216bf 4132 loc += sizeof (Elf32_External_Rel);
67a4f2b7
AO		 4133 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
4134 <= sreloc->contents + sreloc->size);
947216bf 4135 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
13ae64f3
JJ		 4136 }
4137 }
37e55690
JJ		 4138 else if (tls_type == GOT_TLS_IE_BOTH)
4139 {
4140 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4141 (indx == 0
4142 ? relocation - elf_i386_dtpoff_base (info)
4143 : 0),
6de2ae4a 4144 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4145 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4146 outrel.r_offset += 4;
67a4f2b7 4147 sreloc->reloc_count++;
947216bf 4148 loc += sizeof (Elf32_External_Rel);
37e55690
JJ		 4149 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4150 }
13ae64f3 4151
67a4f2b7 4152 dr_done:
13ae64f3
JJ		 4153 if (h != NULL)
4154 h->got.offset |= 1;
4155 else
4156 local_got_offsets[r_symndx] |= 1;
4157 }
4158
67a4f2b7
AO		 4159 if (off >= (bfd_vma) -2
4160 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4161 abort ();
67a4f2b7
AO		 4162 if (r_type == R_386_TLS_GOTDESC
4163 || r_type == R_386_TLS_DESC_CALL)
4164 {
4165 relocation = htab->sgotplt_jump_table_size + offplt;
4166 unresolved_reloc = FALSE;
4167 }
4168 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4169 {
6de2ae4a
L		 4170 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4171 + htab->elf.sgotplt->output_offset;
4172 relocation = htab->elf.sgot->output_section->vma
4173 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4174 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4175 && tls_type == GOT_TLS_IE_BOTH)
4176 relocation += 4;
4177 if (r_type == R_386_TLS_IE)
8c37241b 4178 relocation += g_o_t;
b34976b6 4179 unresolved_reloc = FALSE;
13ae64f3 4180 }
67a4f2b7 4181 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4182 {
4183 unsigned int val, type;
4184 bfd_vma roff;
4185
4186 /* GD->IE transition. */
13ae64f3 4187 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4188 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4189 if (type == 0x04)
4190 {
4191 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4192 Change it into:
4193 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4194 val >>= 3;
142411ca 4195 roff = rel->r_offset - 3;
13ae64f3
JJ		 4196 }
4197 else
4198 {
4199 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4200 Change it into:
4201 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4202 roff = rel->r_offset - 2;
4203 }
4204 memcpy (contents + roff,
4205 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4206 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4207 /* If foo is used only with foo@gotntpoff(%reg) and
4208 foo@indntpoff, but not with foo@gottpoff(%reg), change
4209 subl $foo@gottpoff(%reg), %eax
4210 into:
4211 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4212 if (tls_type == GOT_TLS_IE_POS)
4213 contents[roff + 6] = 0x03;
8c37241b 4214 bfd_put_32 (output_bfd,
6de2ae4a
L		 4215 htab->elf.sgot->output_section->vma
4216 + htab->elf.sgot->output_offset + off
4217 - htab->elf.sgotplt->output_section->vma
4218 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4219 contents + roff + 8);
4220 /* Skip R_386_PLT32. */
4221 rel++;
4222 continue;
4223 }
67a4f2b7
AO		 4224 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4225 {
4226 /* GDesc -> IE transition.
4227 It's originally something like:
4228 leal x@tlsdesc(%ebx), %eax
4229
4230 Change it to:
142411ca 4231 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4232 or:
4233 movl x@gottpoff(%ebx), %eax # before negl %eax
4234
4235 Registers other than %eax may be set up here. */
4236
67a4f2b7
AO		 4237 bfd_vma roff;
4238
4239 /* First, make sure it's a leal adding ebx to a 32-bit
4240 offset into any register, although it's probably
4241 almost always going to be eax. */
4242 roff = rel->r_offset;
67a4f2b7
AO		 4243
4244 /* Now modify the instruction as appropriate. */
4245 /* To turn a leal into a movl in the form we use it, it
4246 suffices to change the first byte from 0x8d to 0x8b.
4247 aoliva FIXME: should we decide to keep the leal, all
4248 we have to do is remove the statement below, and
4249 adjust the relaxation of R_386_TLS_DESC_CALL. */
4250 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4251
4252 if (tls_type == GOT_TLS_IE_BOTH)
4253 off += 4;
4254
4255 bfd_put_32 (output_bfd,
6de2ae4a
L		 4256 htab->elf.sgot->output_section->vma
4257 + htab->elf.sgot->output_offset + off
4258 - htab->elf.sgotplt->output_section->vma
4259 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4260 contents + roff);
4261 continue;
4262 }
4263 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4264 {
4265 /* GDesc -> IE transition.
4266 It's originally:
4267 call *(%eax)
4268
4269 Change it to:
142411ca 4270 xchg %ax,%ax
67a4f2b7
AO		 4271 or
4272 negl %eax
4273 depending on how we transformed the TLS_GOTDESC above.
4274 */
4275
67a4f2b7
AO		 4276 bfd_vma roff;
4277
67a4f2b7 4278 roff = rel->r_offset;
67a4f2b7
AO		 4279
4280 /* Now modify the instruction as appropriate. */
4281 if (tls_type != GOT_TLS_IE_NEG)
4282 {
10efb593
L		 4283 /* xchg %ax,%ax */
4284 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4285 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4286 }
4287 else
4288 {
4289 /* negl %eax */
4290 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4291 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4292 }
4293
4294 continue;
4295 }
4296 else
4297 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4298 break;
4299
4300 case R_386_TLS_LDM:
142411ca
L		 4301 if (! elf_i386_tls_transition (info, input_bfd,
4302 input_section, contents,
4303 symtab_hdr, sym_hashes,
4304 &r_type, GOT_UNKNOWN, rel,
4c544807 4305 relend, h, r_symndx))
142411ca 4306 return FALSE;
13ae64f3 4307
142411ca
L		 4308 if (r_type != R_386_TLS_LDM)
4309 {
13ae64f3 4310 /* LD->LE transition:
13ae64f3
JJ		 4311 leal foo(%reg), %eax; call ___tls_get_addr.
4312 We change it into:
4313 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4314 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4315 memcpy (contents + rel->r_offset - 2,
4316 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4317 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4318 rel++;
4319 continue;
4320 }
4321
6de2ae4a 4322 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4323 abort ();
4324
4325 off = htab->tls_ldm_got.offset;
4326 if (off & 1)
4327 off &= ~1;
4328 else
4329 {
947216bf
AM		 4330 Elf_Internal_Rela outrel;
4331 bfd_byte *loc;
13ae64f3 4332
6de2ae4a 4333 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4334 abort ();
4335
6de2ae4a
L		 4336 outrel.r_offset = (htab->elf.sgot->output_section->vma
4337 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4338
4339 bfd_put_32 (output_bfd, 0,
6de2ae4a 4340 htab->elf.sgot->contents + off);
13ae64f3 4341 bfd_put_32 (output_bfd, 0,
6de2ae4a 4342 htab->elf.sgot->contents + off + 4);
13ae64f3 4343 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
6de2ae4a
L		 4344 loc = htab->elf.srelgot->contents;
4345 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
13ae64f3
JJ		 4346 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4347 htab->tls_ldm_got.offset |= 1;
4348 }
6de2ae4a
L		 4349 relocation = htab->elf.sgot->output_section->vma
4350 + htab->elf.sgot->output_offset + off
4351 - htab->elf.sgotplt->output_section->vma
4352 - htab->elf.sgotplt->output_offset;
b34976b6 4353 unresolved_reloc = FALSE;
13ae64f3
JJ		 4354 break;
4355
4356 case R_386_TLS_LDO_32:
959b0961 4357 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4358 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4359 else
4360 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4361 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4362 break;
4363
4364 case R_386_TLS_LE_32:
13ae64f3 4365 case R_386_TLS_LE:
1d85728f 4366 if (!info->executable)
37e55690 4367 {
947216bf 4368 Elf_Internal_Rela outrel;
37e55690 4369 asection *sreloc;
947216bf 4370 bfd_byte *loc;
37e55690
JJ		 4371
4372 outrel.r_offset = rel->r_offset
4373 + input_section->output_section->vma
4374 + input_section->output_offset;
4375 if (h != NULL && h->dynindx != -1)
4376 indx = h->dynindx;
4377 else
4378 indx = 0;
4379 if (r_type == R_386_TLS_LE_32)
4380 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4381 else
4382 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4383 sreloc = elf_section_data (input_section)->sreloc;
4384 if (sreloc == NULL)
4385 abort ();
947216bf
AM		 4386 loc = sreloc->contents;
4387 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 4388 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4389 if (indx)
4390 continue;
4391 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4392 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4393 else
eb4ff4d6 4394 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4395 }
4396 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4397 relocation = elf_i386_tpoff (info, relocation);
37e55690 4398 else
eb4ff4d6 4399 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4400 break;
4401
252b5132
RH		 4402 default:
4403 break;
4404 }
4405
239e1f3a
AM		 4406 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4407 because such sections are not SEC_ALLOC and thus ld.so will
4408 not process them. */
8c694914 4409 if (unresolved_reloc
239e1f3a 4410 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4411 && h->def_dynamic)
4412 && _bfd_elf_section_offset (output_bfd, info, input_section,
4413 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4414 {
4415 (*_bfd_error_handler)
843fe662 4416 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4417 input_bfd,
4418 input_section,
6a30718d 4419 (long) rel->r_offset,
843fe662 4420 howto->name,
6a30718d 4421 h->root.root.string);
b34976b6 4422 return FALSE;
6a30718d 4423 }
83be169b 4424
cbe950e9 4425do_relocation:
252b5132
RH		 4426 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4427 contents, rel->r_offset,
55fd94b0 4428 relocation, 0);
252b5132 4429
62d78908 4430check_relocation_error:
cf5c0c5b 4431 if (r != bfd_reloc_ok)
252b5132 4432 {
cf5c0c5b 4433 const char *name;
ffb2e45b 4434
cf5c0c5b
AM		 4435 if (h != NULL)
4436 name = h->root.root.string;
4437 else
4438 {
4439 name = bfd_elf_string_from_elf_section (input_bfd,
4440 symtab_hdr->sh_link,
4441 sym->st_name);
4442 if (name == NULL)
b34976b6 4443 return FALSE;
cf5c0c5b
AM		 4444 if (*name == '\0')
4445 name = bfd_section_name (input_bfd, sec);
4446 }
ffb2e45b 4447
cf5c0c5b
AM		 4448 if (r == bfd_reloc_overflow)
4449 {
cf5c0c5b 4450 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4451 (info, (h ? &h->root : NULL), name, howto->name,
4452 (bfd_vma) 0, input_bfd, input_section,
4453 rel->r_offset)))
b34976b6 4454 return FALSE;
cf5c0c5b
AM		 4455 }
4456 else
4457 {
4458 (*_bfd_error_handler)
d003868e
AM		 4459 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4460 input_bfd, input_section,
cf5c0c5b 4461 (long) rel->r_offset, name, (int) r);
b34976b6 4462 return FALSE;
cf5c0c5b 4463 }
252b5132
RH		 4464 }
4465 }
4466
b34976b6 4467 return TRUE;
252b5132
RH		 4468}
4469
4470/* Finish up dynamic symbol handling. We set the contents of various
4471 dynamic sections here. */
4472
b34976b6 4473static bfd_boolean
55fd94b0
AM		 4474elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4475 struct bfd_link_info *info,
4476 struct elf_link_hash_entry *h,
4477 Elf_Internal_Sym *sym)
252b5132 4478{
6725bdbf 4479 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4480 unsigned plt_entry_size;
4481 const struct elf_i386_backend_data *abed;
252b5132 4482
6725bdbf 4483 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4484 if (htab == NULL)
4485 return FALSE;
252b5132 4486
25e762b9
RM		 4487 abed = get_elf_i386_backend_data (output_bfd);
4488 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4489
252b5132
RH		 4490 if (h->plt.offset != (bfd_vma) -1)
4491 {
252b5132
RH		 4492 bfd_vma plt_index;
4493 bfd_vma got_offset;
947216bf
AM		 4494 Elf_Internal_Rela rel;
4495 bfd_byte *loc;
cbe950e9
L		 4496 asection *plt, *gotplt, *relplt;
4497
4498 /* When building a static executable, use .iplt, .igot.plt and
4499 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4500 if (htab->elf.splt != NULL)
cbe950e9 4501 {
6de2ae4a
L		 4502 plt = htab->elf.splt;
4503 gotplt = htab->elf.sgotplt;
4504 relplt = htab->elf.srelplt;
cbe950e9
L		 4505 }
4506 else
4507 {
6de2ae4a
L		 4508 plt = htab->elf.iplt;
4509 gotplt = htab->elf.igotplt;
4510 relplt = htab->elf.irelplt;
cbe950e9 4511 }
252b5132
RH		 4512
4513 /* This symbol has an entry in the procedure linkage table. Set
4514 it up. */
4515
cbe950e9
L		 4516 if ((h->dynindx == -1
4517 && !((h->forced_local || info->executable)
4518 && h->def_regular
4519 && h->type == STT_GNU_IFUNC))
4520 || plt == NULL
4521 || gotplt == NULL
4522 || relplt == NULL)
cec7f46a 4523 abort ();
252b5132
RH		 4524
4525 /* Get the index in the procedure linkage table which
4526 corresponds to this symbol. This is the index of this symbol
4527 in all the symbols for which we are making plt entries. The
cbe950e9 4528 first entry in the procedure linkage table is reserved.
252b5132 4529
cbe950e9 4530 Get the offset into the .got table of the entry that
252b5132 4531 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4532 The first three are reserved.
6bbec505 4533
cbe950e9
L		 4534 For static executables, we don't reserve anything. */
4535
6de2ae4a 4536 if (plt == htab->elf.splt)
cbe950e9 4537 {
e1f98742
L		 4538 got_offset = h->plt.offset / plt_entry_size - 1;
4539 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4540 }
4541 else
4542 {
e1f98742
L		 4543 got_offset = h->plt.offset / plt_entry_size;
4544 got_offset = got_offset * 4;
cbe950e9 4545 }
252b5132
RH		 4546
4547 /* Fill in the entry in the procedure linkage table. */
4548 if (! info->shared)
4549 {
25e762b9
RM		 4550 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4551 abed->plt->plt_entry_size);
252b5132 4552 bfd_put_32 (output_bfd,
cbe950e9
L		 4553 (gotplt->output_section->vma
4554 + gotplt->output_offset
252b5132 4555 + got_offset),
25e762b9
RM		 4556 plt->contents + h->plt.offset
4557 + abed->plt->plt_got_offset);
eac338cf 4558
25e762b9 4559 if (abed->is_vxworks)
eac338cf
PB		 4560 {
4561 int s, k, reloc_index;
4562
4563 /* Create the R_386_32 relocation referencing the GOT
4564 for this PLT entry. */
4565
4566 /* S: Current slot number (zero-based). */
25e762b9
RM		 4567 s = ((h->plt.offset - abed->plt->plt_entry_size)
4568 / abed->plt->plt_entry_size);
eac338cf
PB		 4569 /* K: Number of relocations for PLTResolve. */
4570 if (info->shared)
4571 k = PLTRESOLVE_RELOCS_SHLIB;
4572 else
4573 k = PLTRESOLVE_RELOCS;
4574 /* Skip the PLTresolve relocations, and the relocations for
4575 the other PLT slots. */
4576 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4577 loc = (htab->srelplt2->contents + reloc_index
4578 * sizeof (Elf32_External_Rel));
4579
6de2ae4a
L		 4580 rel.r_offset = (htab->elf.splt->output_section->vma
4581 + htab->elf.splt->output_offset
eac338cf 4582 + h->plt.offset + 2),
7325306f 4583 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4584 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4585
4586 /* Create the R_386_32 relocation referencing the beginning of
4587 the PLT for this GOT entry. */
6de2ae4a
L		 4588 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4589 + htab->elf.sgotplt->output_offset
eac338cf 4590 + got_offset);
7325306f 4591 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4592 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4593 loc + sizeof (Elf32_External_Rel));
4594 }
252b5132
RH		 4595 }
4596 else
4597 {
25e762b9
RM		 4598 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4599 abed->plt->plt_entry_size);
252b5132 4600 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4601 plt->contents + h->plt.offset
4602 + abed->plt->plt_got_offset);
252b5132
RH		 4603 }
4604
252b5132
RH		 4605 /* Fill in the entry in the global offset table. */
4606 bfd_put_32 (output_bfd,
cbe950e9
L		 4607 (plt->output_section->vma
4608 + plt->output_offset
252b5132 4609 + h->plt.offset
25e762b9 4610 + abed->plt->plt_lazy_offset),
cbe950e9 4611 gotplt->contents + got_offset);
252b5132
RH		 4612
4613 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4614 rel.r_offset = (gotplt->output_section->vma
4615 + gotplt->output_offset
252b5132 4616 + got_offset);
cbe950e9
L		 4617 if (h->dynindx == -1
4618 || ((info->executable
4619 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4620 && h->def_regular
4621 && h->type == STT_GNU_IFUNC))
4622 {
4623 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4624 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4625 in the .got.plt section. */
4626 bfd_put_32 (output_bfd,
23209a78 4627 (h->root.u.def.value
cbe950e9
L		 4628 + h->root.u.def.section->output_section->vma
4629 + h->root.u.def.section->output_offset),
4630 gotplt->contents + got_offset);
4631 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4632 /* R_386_IRELATIVE comes last. */
4633 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4634 }
4635 else
e1f98742
L		 4636 {
4637 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4638 plt_index = htab->next_jump_slot_index++;
4639 }
cbe950e9 4640 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4641 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4642
e1f98742
L		 4643 /* Don't fill PLT entry for static executables. */
4644 if (plt == htab->elf.splt)
4645 {
4646 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4647 plt->contents + h->plt.offset
4648 + abed->plt->plt_reloc_offset);
4649 bfd_put_32 (output_bfd, - (h->plt.offset
4650 + abed->plt->plt_plt_offset + 4),
4651 plt->contents + h->plt.offset
4652 + abed->plt->plt_plt_offset);
4653 }
4654
f5385ebf 4655 if (!h->def_regular)
252b5132
RH		 4656 {
4657 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 4658 the .plt section. Leave the value if there were any
4659 relocations where pointer equality matters (this is a clue
51b64d56
AM		 4660 for the dynamic linker, to make function pointer
4661 comparisons work between an application and shared
c6585bbb
JJ		 4662 library), otherwise set it to zero. If a function is only
4663 called from a binary, there is no need to slow down
4664 shared libraries because of that. */
252b5132 4665 sym->st_shndx = SHN_UNDEF;
f5385ebf 4666 if (!h->pointer_equality_needed)
c6585bbb 4667 sym->st_value = 0;
252b5132
RH		 4668 }
4669 }
4670
13ae64f3 4671 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4672 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4673 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4674 {
947216bf
AM		 4675 Elf_Internal_Rela rel;
4676 bfd_byte *loc;
252b5132
RH		 4677
4678 /* This symbol has an entry in the global offset table. Set it
4679 up. */
4680
6de2ae4a 4681 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4682 abort ();
252b5132 4683
6de2ae4a
L		 4684 rel.r_offset = (htab->elf.sgot->output_section->vma
4685 + htab->elf.sgot->output_offset
dc810e39 4686 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4687
dd5724d5
AM		 4688 /* If this is a static link, or it is a -Bsymbolic link and the
4689 symbol is defined locally or was forced to be local because
4690 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4691 The entry in the global offset table will already have been
4692 initialized in the relocate_section function. */
710ab287 4693 if (h->def_regular
0018b0a3
L		 4694 && h->type == STT_GNU_IFUNC)
4695 {
710ab287
L		 4696 if (info->shared)
4697 {
4698 /* Generate R_386_GLOB_DAT. */
4699 goto do_glob_dat;
4700 }
4701 else
4702 {
cd2b2c10
L		 4703 asection *plt;
4704
710ab287
L		 4705 if (!h->pointer_equality_needed)
4706 abort ();
4707
4708 /* For non-shared object, we can't use .got.plt, which
4709 contains the real function addres if we need pointer
4710 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4711 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4712 bfd_put_32 (output_bfd,
4713 (plt->output_section->vma
4714 + plt->output_offset + h->plt.offset),
6de2ae4a 4715 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4716 return TRUE;
4717 }
0018b0a3
L		 4718 }
4719 else if (info->shared
4720 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4721 {
6725bdbf 4722 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4723 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4724 }
252b5132
RH		 4725 else
4726 {
dd5724d5 4727 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4728do_glob_dat:
6725bdbf 4729 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4730 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4731 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4732 }
4733
6de2ae4a
L		 4734 loc = htab->elf.srelgot->contents;
4735 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 4736 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 4737 }
4738
f5385ebf 4739 if (h->needs_copy)
252b5132 4740 {
947216bf
AM		 4741 Elf_Internal_Rela rel;
4742 bfd_byte *loc;
252b5132
RH		 4743
4744 /* This symbol needs a copy reloc. Set it up. */
4745
ffb2e45b
AM		 4746 if (h->dynindx == -1
4747 || (h->root.type != bfd_link_hash_defined
4748 && h->root.type != bfd_link_hash_defweak)
4749 || htab->srelbss == NULL)
4750 abort ();
252b5132
RH		 4751
4752 rel.r_offset = (h->root.u.def.value
4753 + h->root.u.def.section->output_section->vma
4754 + h->root.u.def.section->output_offset);
4755 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
947216bf
AM		 4756 loc = htab->srelbss->contents;
4757 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 4758 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 4759 }
4760
b34976b6 4761 return TRUE;
252b5132
RH		 4762}
4763
c25bc9fc
L		 4764/* Finish up local dynamic symbol handling. We set the contents of
4765 various dynamic sections here. */
4766
4767static bfd_boolean
4768elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4769{
4770 struct elf_link_hash_entry *h
4771 = (struct elf_link_hash_entry *) *slot;
4772 struct bfd_link_info *info
23209a78 4773 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4774
4775 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4776 h, NULL);
4777}
4778
38701953
AM		 4779/* Used to decide how to sort relocs in an optimal manner for the
4780 dynamic linker, before writing them out. */
4781
4782static enum elf_reloc_type_class
55fd94b0 4783elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
38701953 4784{
55fd94b0 4785 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4786 {
4787 case R_386_RELATIVE:
4788 return reloc_class_relative;
4789 case R_386_JUMP_SLOT:
4790 return reloc_class_plt;
4791 case R_386_COPY:
4792 return reloc_class_copy;
4793 default:
4794 return reloc_class_normal;
4795 }
4796}
4797
252b5132
RH		 4798/* Finish up the dynamic sections. */
4799
b34976b6 4800static bfd_boolean
55fd94b0
AM		 4801elf_i386_finish_dynamic_sections (bfd *output_bfd,
4802 struct bfd_link_info *info)
252b5132 4803{
6725bdbf 4804 struct elf_i386_link_hash_table *htab;
252b5132 4805 bfd *dynobj;
252b5132 4806 asection *sdyn;
25e762b9 4807 const struct elf_i386_backend_data *abed;
252b5132 4808
6725bdbf 4809 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4810 if (htab == NULL)
4811 return FALSE;
4812
ebe50bae 4813 dynobj = htab->elf.dynobj;
3d4d4302 4814 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4815 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4816
ebe50bae 4817 if (htab->elf.dynamic_sections_created)
252b5132 4818 {
252b5132
RH		 4819 Elf32_External_Dyn *dyncon, *dynconend;
4820
6de2ae4a 4821 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4822 abort ();
252b5132
RH		 4823
4824 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4825 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4826 for (; dyncon < dynconend; dyncon++)
4827 {
4828 Elf_Internal_Dyn dyn;
51b64d56 4829 asection *s;
252b5132
RH		 4830
4831 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4832
4833 switch (dyn.d_tag)
4834 {
4835 default:
25e762b9
RM		 4836 if (abed->is_vxworks
4837 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 4838 break;
0ac8d2ca 4839 continue;
252b5132
RH		 4840
4841 case DT_PLTGOT:
6de2ae4a 4842 s = htab->elf.sgotplt;
8c37241b 4843 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 4844 break;
4845
252b5132 4846 case DT_JMPREL:
6de2ae4a 4847 s = htab->elf.srelplt;
6348e046 4848 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 4849 break;
4850
4851 case DT_PLTRELSZ:
6de2ae4a 4852 s = htab->elf.srelplt;
eea6121a 4853 dyn.d_un.d_val = s->size;
252b5132
RH		 4854 break;
4855
4856 case DT_RELSZ:
4857 /* My reading of the SVR4 ABI indicates that the
4858 procedure linkage table relocs (DT_JMPREL) should be
4859 included in the overall relocs (DT_REL). This is
4860 what Solaris does. However, UnixWare can not handle
4861 that case. Therefore, we override the DT_RELSZ entry
6348e046 4862 here to make it not include the JMPREL relocs. */
6de2ae4a 4863 s = htab->elf.srelplt;
6348e046
AM		 4864 if (s == NULL)
4865 continue;
eea6121a 4866 dyn.d_un.d_val -= s->size;
6348e046
AM		 4867 break;
4868
4869 case DT_REL:
4870 /* We may not be using the standard ELF linker script.
4871 If .rel.plt is the first .rel section, we adjust
4872 DT_REL to not include it. */
6de2ae4a 4873 s = htab->elf.srelplt;
6348e046
AM		 4874 if (s == NULL)
4875 continue;
4876 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4877 continue;
eea6121a 4878 dyn.d_un.d_ptr += s->size;
252b5132
RH		 4879 break;
4880 }
0ac8d2ca
AM		 4881
4882 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 4883 }
4884
4885 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 4886 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 4887 {
4888 if (info->shared)
eac338cf 4889 {
25e762b9
RM		 4890 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
4891 abed->plt->plt0_entry_size);
4892 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4893 abed->plt0_pad_byte,
4894 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 4895 }
252b5132
RH		 4896 else
4897 {
25e762b9
RM		 4898 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
4899 abed->plt->plt0_entry_size);
4900 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4901 abed->plt0_pad_byte,
4902 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 4903 bfd_put_32 (output_bfd,
6de2ae4a
L		 4904 (htab->elf.sgotplt->output_section->vma
4905 + htab->elf.sgotplt->output_offset
6725bdbf 4906 + 4),
25e762b9
RM		 4907 htab->elf.splt->contents
4908 + abed->plt->plt0_got1_offset);
252b5132 4909 bfd_put_32 (output_bfd,
6de2ae4a
L		 4910 (htab->elf.sgotplt->output_section->vma
4911 + htab->elf.sgotplt->output_offset
6725bdbf 4912 + 8),
25e762b9
RM		 4913 htab->elf.splt->contents
4914 + abed->plt->plt0_got2_offset);
eac338cf 4915
25e762b9 4916 if (abed->is_vxworks)
eac338cf
PB		 4917 {
4918 Elf_Internal_Rela rel;
7325306f 4919
eac338cf
PB		 4920 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4921 On IA32 we use REL relocations so the addend goes in
4922 the PLT directly. */
6de2ae4a
L		 4923 rel.r_offset = (htab->elf.splt->output_section->vma
4924 + htab->elf.splt->output_offset
25e762b9 4925 + abed->plt->plt0_got1_offset);
7325306f 4926 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4927 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4928 htab->srelplt2->contents);
4929 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 4930 rel.r_offset = (htab->elf.splt->output_section->vma
4931 + htab->elf.splt->output_offset
25e762b9 4932 + abed->plt->plt0_got2_offset);
7325306f 4933 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4934 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4935 htab->srelplt2->contents +
4936 sizeof (Elf32_External_Rel));
4937 }
252b5132
RH		 4938 }
4939
4940 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4941 really seem like the right value. */
6de2ae4a 4942 elf_section_data (htab->elf.splt->output_section)
6725bdbf 4943 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 4944
4945 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 4946 if (abed->is_vxworks && !info->shared)
eac338cf 4947 {
25e762b9
RM		 4948 int num_plts = (htab->elf.splt->size
4949 / abed->plt->plt_entry_size) - 1;
4c9b0de6 4950 unsigned char *p;
eac338cf
PB		 4951
4952 p = htab->srelplt2->contents;
4953 if (info->shared)
4954 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4955 else
4956 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4957
4958 for (; num_plts; num_plts--)
4959 {
4960 Elf_Internal_Rela rel;
4961 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4962 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4963 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4964 p += sizeof (Elf32_External_Rel);
4965
4966 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4967 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4968 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4969 p += sizeof (Elf32_External_Rel);
4970 }
4971 }
252b5132
RH		 4972 }
4973 }
4974
6de2ae4a 4975 if (htab->elf.sgotplt)
252b5132 4976 {
56d4289c
L		 4977 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4978 {
4979 (*_bfd_error_handler)
4980 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4981 return FALSE;
4982 }
4983
12d0ee4a 4984 /* Fill in the first three entries in the global offset table. */
6de2ae4a 4985 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 4986 {
4987 bfd_put_32 (output_bfd,
55fd94b0 4988 (sdyn == NULL ? 0
12d0ee4a 4989 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 4990 htab->elf.sgotplt->contents);
4991 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4992 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 4993 }
252b5132 4994
6de2ae4a 4995 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 4996 }
8c37241b 4997
e41b3a13 4998 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 4999 if (htab->plt_eh_frame != NULL
5000 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5001 {
5002 if (htab->elf.splt != NULL
5003 && htab->elf.splt->size != 0
5004 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5005 && htab->elf.splt->output_section != NULL
5006 && htab->plt_eh_frame->output_section != NULL)
5007 {
5008 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5009 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5010 + htab->plt_eh_frame->output_offset
5011 + PLT_FDE_START_OFFSET;
5012 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5013 htab->plt_eh_frame->contents
5014 + PLT_FDE_START_OFFSET);
5015 }
5016 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5017 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5018 {
5019 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5020 htab->plt_eh_frame,
5021 htab->plt_eh_frame->contents))
5022 return FALSE;
5023 }
5024 }
5025
6de2ae4a
L		 5026 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5027 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5028
c25bc9fc
L		 5029 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5030 htab_traverse (htab->loc_hash_table,
5031 elf_i386_finish_local_dynamic_symbol,
5032 info);
5033
b34976b6 5034 return TRUE;
252b5132
RH		 5035}
5036
4c45e5c9
JJ		 5037/* Return address for Ith PLT stub in section PLT, for relocation REL
5038 or (bfd_vma) -1 if it should not be included. */
5039
5040static bfd_vma
5041elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
5042 const arelent *rel ATTRIBUTE_UNUSED)
5043{
25e762b9 5044 return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
4c45e5c9
JJ		 5045}
5046
fdc90cb4
JJ		 5047/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5048
5049static bfd_boolean
5050elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5051{
5052 if (h->plt.offset != (bfd_vma) -1
5053 && !h->def_regular
5054 && !h->pointer_equality_needed)
5055 return FALSE;
5056
5057 return _bfd_elf_hash_symbol (h);
5058}
4c45e5c9 5059
d8045f23
NC		 5060/* Hook called by the linker routine which adds symbols from an object
5061 file. */
5062
5063static bfd_boolean
c16153ae 5064elf_i386_add_symbol_hook (bfd * abfd,
d8045f23
NC		 5065 struct bfd_link_info * info ATTRIBUTE_UNUSED,
5066 Elf_Internal_Sym * sym,
5067 const char ** namep ATTRIBUTE_UNUSED,
5068 flagword * flagsp ATTRIBUTE_UNUSED,
5069 asection ** secp ATTRIBUTE_UNUSED,
5070 bfd_vma * valp ATTRIBUTE_UNUSED)
5071{
c16153ae 5072 if ((abfd->flags & DYNAMIC) == 0
f64b2e8d
NC		 5073 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5074 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
5075 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC		 5076
5077 return TRUE;
5078}
5079
252b5132
RH		 5080#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
5081#define TARGET_LITTLE_NAME "elf32-i386"
5082#define ELF_ARCH bfd_arch_i386
ae95ffa6 5083#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5084#define ELF_MACHINE_CODE EM_386
5085#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5086
5087#define elf_backend_can_gc_sections 1
51b64d56 5088#define elf_backend_can_refcount 1
252b5132
RH		 5089#define elf_backend_want_got_plt 1
5090#define elf_backend_plt_readonly 1
5091#define elf_backend_want_plt_sym 0
5092#define elf_backend_got_header_size 12
e41b3a13 5093#define elf_backend_plt_alignment 4
252b5132 5094
8c29f035
AM		 5095/* Support RELA for objdump of prelink objects. */
5096#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5097#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5098
13ae64f3 5099#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5100
dd5724d5
AM		 5101#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5102#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
c25bc9fc 5103#define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
dd5724d5 5104#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5105#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM		 5106
5107#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5108#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5109#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5110#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5111#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5112#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5113#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5114#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5115#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5116#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5117#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5118#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5119#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5120#define elf_backend_relocate_section elf_i386_relocate_section
5121#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5122#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5123#define elf_backend_omit_section_dynsym \
5124 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 5125#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 5126#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23
NC		 5127#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
5128#undef elf_backend_post_process_headers
5129#define elf_backend_post_process_headers _bfd_elf_set_osabi
dd5724d5 5130
252b5132 5131#include "elf32-target.h"
2bc3c89a
AM		 5132
5133/* FreeBSD support. */
5134
5135#undef TARGET_LITTLE_SYM
5136#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
5137#undef TARGET_LITTLE_NAME
5138#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5139#undef ELF_OSABI
5140#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5141
5142/* The kernel recognizes executables as valid only if they carry a
5143 "FreeBSD" label in the ELF header. So we put this label on all
5144 executables and (for simplicity) also all other object files. */
5145
2bc3c89a 5146static void
d8045f23 5147elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5148{
d8045f23 5149 _bfd_elf_set_osabi (abfd, info);
2bc3c89a 5150
2bc3c89a
AM		 5151#ifdef OLD_FREEBSD_ABI_LABEL
5152 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5153 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 5154#endif
2bc3c89a
AM		 5155}
5156
5157#undef elf_backend_post_process_headers
d8045f23 5158#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5159#undef elf32_bed
5160#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5161
d8045f23
NC		 5162#undef elf_backend_add_symbol_hook
5163
2bc3c89a 5164#include "elf32-target.h"
eac338cf 5165
a6cc6b3b
RO		 5166/* Solaris 2. */
5167
5168#undef TARGET_LITTLE_SYM
5169#define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec
5170#undef TARGET_LITTLE_NAME
5171#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5172
5173/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5174 objects won't be recognized. */
5175#undef ELF_OSABI
5176
5177#undef elf32_bed
5178#define elf32_bed elf32_i386_sol2_bed
5179
7dc98aea
RO		 5180/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5181 boundary. */
5182#undef elf_backend_static_tls_alignment
5183#define elf_backend_static_tls_alignment 8
5184
a6cc6b3b
RO		 5185/* The Solaris 2 ABI requires a plt symbol on all platforms.
5186
5187 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5188 File, p.63. */
5189#undef elf_backend_want_plt_sym
5190#define elf_backend_want_plt_sym 1
5191
5192#include "elf32-target.h"
5193
a27e4371
RM		 5194/* Native Client support. */
5195
5196#undef TARGET_LITTLE_SYM
5197#define TARGET_LITTLE_SYM bfd_elf32_i386_nacl_vec
5198#undef TARGET_LITTLE_NAME
5199#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5200#undef elf32_bed
5201#define elf32_bed elf32_i386_nacl_bed
5202
5203#undef ELF_MAXPAGESIZE
5204#define ELF_MAXPAGESIZE 0x10000
5205
5206/* Restore defaults. */
5207#undef ELF_OSABI
5208#undef elf_backend_want_plt_sym
5209#define elf_backend_want_plt_sym 0
5210#undef elf_backend_post_process_headers
5211#define elf_backend_post_process_headers _bfd_elf_set_osabi
5212#undef elf_backend_static_tls_alignment
5213
5214/* NaCl uses substantially different PLT entries for the same effects. */
5215
5216#undef elf_backend_plt_alignment
5217#define elf_backend_plt_alignment 5
5218#define NACL_PLT_ENTRY_SIZE 64
5219#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5220
5221static const bfd_byte elf_i386_nacl_plt0_entry[] =
5222 {
5223 0xff, 0x35, /* pushl contents of address */
5224 0, 0, 0, 0, /* replaced with address of .got + 4. */
5225 0x8b, 0x0d, /* movl contents of address, %ecx */
5226 0, 0, 0, 0, /* replaced with address of .got + 8. */
5227 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5228 0xff, 0xe1 /* jmp *%ecx */
5229 };
5230
5231static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5232 {
5233 0x8b, 0x0d, /* movl contents of address, %ecx */
5234 0, 0, 0, 0, /* replaced with GOT slot address. */
5235 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5236 0xff, 0xe1, /* jmp *%ecx */
5237
5238 /* Pad to the next 32-byte boundary with nop instructions. */
5239 0x90,
5240 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5241 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5242
5243 /* Lazy GOT entries point here (32-byte aligned). */
5244 0x68, /* pushl immediate */
5245 0, 0, 0, 0, /* replaced with reloc offset. */
5246 0xe9, /* jmp relative */
5247 0, 0, 0, 0, /* replaced with offset to .plt. */
5248
5249 /* Pad to the next 32-byte boundary with nop instructions. */
5250 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5251 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5252 0x90, 0x90
5253 };
5254
5255static const bfd_byte
5256elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5257 {
5258 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5259 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5260 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5261 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5262
5263 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5264 so pad to that size with nop instructions. */
5265 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5266 };
5267
5268static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5269 {
5270 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5271 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5272 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5273 0xff, 0xe1, /* jmp *%ecx */
5274
5275 /* Pad to the next 32-byte boundary with nop instructions. */
5276 0x90,
5277 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5278 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5279
5280 /* Lazy GOT entries point here (32-byte aligned). */
5281 0x68, /* pushl immediate */
5282 0, 0, 0, 0, /* replaced with offset into relocation table. */
5283 0xe9, /* jmp relative */
5284 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5285
5286 /* Pad to the next 32-byte boundary with nop instructions. */
5287 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5288 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5289 0x90, 0x90
5290 };
5291
5292static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5293 {
5294#if (PLT_CIE_LENGTH != 20 \
5295 || PLT_FDE_LENGTH != 36 \
5296 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5297 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5298# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5299#endif
5300 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5301 0, 0, 0, 0, /* CIE ID */
5302 1, /* CIE version */
5303 'z', 'R', 0, /* Augmentation string */
5304 1, /* Code alignment factor */
5305 0x7c, /* Data alignment factor: -4 */
5306 8, /* Return address column */
5307 1, /* Augmentation size */
5308 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5309 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5310 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5311 DW_CFA_nop, DW_CFA_nop,
5312
5313 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5314 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5315 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5316 0, 0, 0, 0, /* .plt size goes here */
5317 0, /* Augmentation size */
5318 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5319 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5320 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5321 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5322 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5323 13, /* Block length */
5324 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5325 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5326 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5327 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5328 DW_CFA_nop, DW_CFA_nop
5329 };
5330
5331static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5332 {
5333 elf_i386_nacl_plt0_entry, /* plt0_entry */
5334 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5335 2, /* plt0_got1_offset */
5336 8, /* plt0_got2_offset */
5337 elf_i386_nacl_plt_entry, /* plt_entry */
5338 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5339 2, /* plt_got_offset */
5340 33, /* plt_reloc_offset */
5341 38, /* plt_plt_offset */
5342 32, /* plt_lazy_offset */
5343 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5344 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5345 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5346 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5347 };
5348
5349static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5350 {
5351 &elf_i386_nacl_plt, /* plt */
5352 0x90, /* plt0_pad_byte: nop insn */
5353 0, /* is_vxworks */
5354 };
5355
5356#undef elf_backend_arch_data
5357#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5358
5a68afcf
RM		 5359#undef elf_backend_modify_segment_map
5360#define elf_backend_modify_segment_map nacl_modify_segment_map
5361#undef elf_backend_modify_program_headers
5362#define elf_backend_modify_program_headers nacl_modify_program_headers
5363
a27e4371
RM		 5364#include "elf32-target.h"
5365
5a68afcf
RM		 5366/* Restore defaults. */
5367#undef elf_backend_modify_segment_map
5368#undef elf_backend_modify_program_headers
5369
eac338cf
PB		 5370/* VxWorks support. */
5371
5372#undef TARGET_LITTLE_SYM
5373#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
5374#undef TARGET_LITTLE_NAME
5375#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5376#undef ELF_OSABI
a27e4371
RM		 5377#undef elf_backend_plt_alignment
5378#define elf_backend_plt_alignment 4
eac338cf 5379
23209a78
RM		 5380static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5381 {
25e762b9 5382 &elf_i386_plt, /* plt */
23209a78
RM		 5383 0x90, /* plt0_pad_byte */
5384 1, /* is_vxworks */
5385 };
eac338cf 5386
23209a78
RM		 5387#undef elf_backend_arch_data
5388#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5389
13285a1b
AM		 5390#undef elf_backend_relocs_compatible
5391#undef elf_backend_post_process_headers
eac338cf
PB		 5392#undef elf_backend_add_symbol_hook
5393#define elf_backend_add_symbol_hook \
5394 elf_vxworks_add_symbol_hook
5395#undef elf_backend_link_output_symbol_hook
5396#define elf_backend_link_output_symbol_hook \
9c72ff84 5397 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5398#undef elf_backend_emit_relocs
5399#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5400#undef elf_backend_final_write_processing
5401#define elf_backend_final_write_processing \
5402 elf_vxworks_final_write_processing
7dc98aea 5403#undef elf_backend_static_tls_alignment
eac338cf
PB		 5404
5405/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5406 define it. */
5407#undef elf_backend_want_plt_sym
5408#define elf_backend_want_plt_sym 1
5409
5410#undef elf32_bed
5411#define elf32_bed elf32_i386_vxworks_bed
5412
5413#include "elf32-target.h"
GDB Binutils - Deliverables
This page took 1.099409 seconds and 4 git commands to generate.