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Convert mov to lea in size_dynamic_sections
[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
2634 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2635 if (h->def_regular
2636 && h->type != STT_GNU_IFUNC
2637 && SYMBOL_REFERENCES_LOCAL (link_info, h)
2638 && bfd_get_8 (input_bfd,
2639 contents + irel->r_offset - 2) == 0x8b)
2640 {
2641 bfd_put_8 (output_bfd, 0x8d,
2642 contents + irel->r_offset - 2);
2643 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2644 if (h->got.refcount > 0)
2645 h->got.refcount -= 1;
2646 changed_contents = TRUE;
2647 changed_relocs = TRUE;
2648 }
2649 }
2650
2651 if (contents != NULL
2652 && elf_section_data (sec)->this_hdr.contents != contents)
2653 {
2654 if (!changed_contents && !link_info->keep_memory)
2655 free (contents);
2656 else
2657 {
2658 /* Cache the section contents for elf_link_input_bfd. */
2659 elf_section_data (sec)->this_hdr.contents = contents;
2660 }
2661 }
2662
2663 if (elf_section_data (sec)->relocs != internal_relocs)
2664 {
2665 if (!changed_relocs)
2666 free (internal_relocs);
2667 else
2668 elf_section_data (sec)->relocs = internal_relocs;
2669 }
2670
2671 return TRUE;
2672
2673 error_return:
2674 if (contents != NULL
2675 && elf_section_data (sec)->this_hdr.contents != contents)
2676 free (contents);
2677 if (internal_relocs != NULL
2678 && elf_section_data (sec)->relocs != internal_relocs)
2679 free (internal_relocs);
2680 return FALSE;
2681}
2682
252b5132
RH		 2683/* Set the sizes of the dynamic sections. */
2684
b34976b6 2685static bfd_boolean
23209a78 2686elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2687{
6725bdbf 2688 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2689 bfd *dynobj;
2690 asection *s;
b34976b6 2691 bfd_boolean relocs;
0c715baa 2692 bfd *ibfd;
252b5132 2693
6725bdbf 2694 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2695 if (htab == NULL)
2696 return FALSE;
ebe50bae 2697 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2698 if (dynobj == NULL)
2699 abort ();
252b5132 2700
ebe50bae 2701 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2702 {
2703 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2704 if (info->executable)
252b5132 2705 {
3d4d4302 2706 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 2707 if (s == NULL)
2708 abort ();
eea6121a 2709 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2710 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2711 }
161d71a6 2712 }
6725bdbf 2713
0c715baa
AM		 2714 /* Set up .got offsets for local syms, and space for local dynamic
2715 relocs. */
2716 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 2717 {
2718 bfd_signed_vma *local_got;
2719 bfd_signed_vma *end_local_got;
13ae64f3 2720 char *local_tls_type;
67a4f2b7 2721 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2722 bfd_size_type locsymcount;
2723 Elf_Internal_Shdr *symtab_hdr;
2724 asection *srel;
6725bdbf 2725
0ffa91dd 2726 if (! is_i386_elf (ibfd))
161d71a6 2727 continue;
6725bdbf 2728
0c715baa
AM		 2729 for (s = ibfd->sections; s != NULL; s = s->next)
2730 {
e03a8ed8 2731 struct elf_dyn_relocs *p;
0c715baa 2732
daa67607
L		 2733 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2734 return FALSE;
2735
e03a8ed8 2736 for (p = ((struct elf_dyn_relocs *)
e81d3500 2737 elf_section_data (s)->local_dynrel);
ec338859
AM		 2738 p != NULL;
2739 p = p->next)
0c715baa 2740 {
ec338859
AM		 2741 if (!bfd_is_abs_section (p->sec)
2742 && bfd_is_abs_section (p->sec->output_section))
2743 {
2744 /* Input section has been discarded, either because
2745 it is a copy of a linkonce section or due to
2746 linker script /DISCARD/, so we'll be discarding
2747 the relocs too. */
2748 }
23209a78 2749 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2750 && strcmp (p->sec->output_section->name,
2751 ".tls_vars") == 0)
2752 {
2753 /* Relocations in vxworks .tls_vars sections are
2754 handled specially by the loader. */
2755 }
248866a8 2756 else if (p->count != 0)
ec338859
AM		 2757 {
2758 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2759 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2760 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2761 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2762 {
2763 info->flags |= DF_TEXTREL;
2764 if (info->warn_shared_textrel && info->shared)
2765 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
2766 p->sec->owner, p->sec);
b70321a2 2767 }
ec338859 2768 }
0c715baa
AM		 2769 }
2770 }
2771
2772 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2773 if (!local_got)
2774 continue;
6725bdbf 2775
0ffa91dd 2776 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2777 locsymcount = symtab_hdr->sh_info;
2778 end_local_got = local_got + locsymcount;
13ae64f3 2779 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2780 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2781 s = htab->elf.sgot;
2782 srel = htab->elf.srelgot;
67a4f2b7
AO		 2783 for (; local_got < end_local_got;
2784 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2785 {
67a4f2b7 2786 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2787 if (*local_got > 0)
6725bdbf 2788 {
67a4f2b7
AO		 2789 if (GOT_TLS_GDESC_P (*local_tls_type))
2790 {
6de2ae4a 2791 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2792 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2793 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2794 *local_got = (bfd_vma) -2;
2795 }
2796 if (! GOT_TLS_GDESC_P (*local_tls_type)
2797 || GOT_TLS_GD_P (*local_tls_type))
2798 {
2799 *local_got = s->size;
2800 s->size += 4;
2801 if (GOT_TLS_GD_P (*local_tls_type)
2802 || *local_tls_type == GOT_TLS_IE_BOTH)
2803 s->size += 4;
2804 }
13ae64f3 2805 if (info->shared
67a4f2b7 2806 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2807 || (*local_tls_type & GOT_TLS_IE))
2808 {
2809 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2810 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2811 else if (GOT_TLS_GD_P (*local_tls_type)
2812 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2813 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2814 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2815 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2816 }
6725bdbf 2817 }
161d71a6
L		 2818 else
2819 *local_got = (bfd_vma) -1;
6725bdbf 2820 }
252b5132 2821 }
6725bdbf 2822
13ae64f3
JJ		 2823 if (htab->tls_ldm_got.refcount > 0)
2824 {
2825 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2826 relocs. */
6de2ae4a
L		 2827 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2828 htab->elf.sgot->size += 8;
2829 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2830 }
2831 else
2832 htab->tls_ldm_got.offset = -1;
2833
0c715baa
AM		 2834 /* Allocate global sym .plt and .got entries, and space for global
2835 sym dynamic relocs. */
eb4ff4d6 2836 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2837
c25bc9fc
L		 2838 /* Allocate .plt and .got entries, and space for local symbols. */
2839 htab_traverse (htab->loc_hash_table,
2840 elf_i386_allocate_local_dynrelocs,
2841 info);
2842
67a4f2b7
AO		 2843 /* For every jump slot reserved in the sgotplt, reloc_count is
2844 incremented. However, when we reserve space for TLS descriptors,
2845 it's not incremented, so in order to compute the space reserved
2846 for them, it suffices to multiply the reloc count by the jump
e1f98742 2847 slot size.
caa0075c 2848
e1f98742
L		 2849 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2850 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2851 if (htab->elf.srelplt)
e1f98742
L		 2852 {
2853 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2854 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2855 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2856 }
2857 else if (htab->elf.irelplt)
2858 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2859
67a4f2b7 2860
a7b16ceb
L		 2861 if (htab->elf.sgotplt)
2862 {
e28df02b
L		 2863 struct elf_link_hash_entry *got;
2864 got = elf_link_hash_lookup (elf_hash_table (info),
2865 "_GLOBAL_OFFSET_TABLE_",
2866 FALSE, FALSE, FALSE);
2867
a7b16ceb 2868 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2869 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
e28df02b
L		 2870 if ((got == NULL
2871 || !got->ref_regular_nonweak)
2872 && (htab->elf.sgotplt->size
2873 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2874 && (htab->elf.splt == NULL
2875 || htab->elf.splt->size == 0)
2876 && (htab->elf.sgot == NULL
2877 || htab->elf.sgot->size == 0)
2878 && (htab->elf.iplt == NULL
2879 || htab->elf.iplt->size == 0)
2880 && (htab->elf.igotplt == NULL
2881 || htab->elf.igotplt->size == 0))
2882 htab->elf.sgotplt->size = 0;
2883 }
2884
9a2a56cc
AM		 2885
2886 if (htab->plt_eh_frame != NULL
2887 && htab->elf.splt != NULL
2888 && htab->elf.splt->size != 0
2889 && !bfd_is_abs_section (htab->elf.splt->output_section)
2890 && _bfd_elf_eh_frame_present (info))
2891 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
2892
5a15f56f
AM		 2893 /* We now have determined the sizes of the various dynamic sections.
2894 Allocate memory for them. */
b34976b6 2895 relocs = FALSE;
252b5132
RH		 2896 for (s = dynobj->sections; s != NULL; s = s->next)
2897 {
eac338cf
PB		 2898 bfd_boolean strip_section = TRUE;
2899
252b5132
RH		 2900 if ((s->flags & SEC_LINKER_CREATED) == 0)
2901 continue;
2902
6de2ae4a 2903 if (s == htab->elf.splt
9a2a56cc 2904 || s == htab->elf.sgot)
252b5132 2905 {
6725bdbf
AM		 2906 /* Strip this section if we don't need it; see the
2907 comment below. */
eac338cf
PB		 2908 /* We'd like to strip these sections if they aren't needed, but if
2909 we've exported dynamic symbols from them we must leave them.
2910 It's too late to tell BFD to get rid of the symbols. */
2911
7325306f 2912 if (htab->elf.hplt != NULL)
eac338cf 2913 strip_section = FALSE;
252b5132 2914 }
9a2a56cc
AM		 2915 else if (s == htab->elf.sgotplt
2916 || s == htab->elf.iplt
2917 || s == htab->elf.igotplt
2918 || s == htab->plt_eh_frame
2919 || s == htab->sdynbss)
2920 {
2921 /* Strip these too. */
2922 }
0112cd26 2923 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2924 {
6de2ae4a
L		 2925 if (s->size != 0
2926 && s != htab->elf.srelplt
2927 && s != htab->srelplt2)
b34976b6 2928 relocs = TRUE;
252b5132 2929
0ac8d2ca
AM		 2930 /* We use the reloc_count field as a counter if we need
2931 to copy relocs into the output file. */
5ae0bfb6 2932 s->reloc_count = 0;
252b5132 2933 }
6725bdbf 2934 else
252b5132
RH		 2935 {
2936 /* It's not one of our sections, so don't allocate space. */
2937 continue;
2938 }
2939
c456f082 2940 if (s->size == 0)
252b5132 2941 {
0ac8d2ca
AM		 2942 /* If we don't need this section, strip it from the
2943 output file. This is mostly to handle .rel.bss and
2944 .rel.plt. We must create both sections in
2945 create_dynamic_sections, because they must be created
2946 before the linker maps input sections to output
2947 sections. The linker does that before
2948 adjust_dynamic_symbol is called, and it is that
2949 function which decides whether anything needs to go
2950 into these sections. */
c456f082
AM		 2951 if (strip_section)
2952 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2953 continue;
2954 }
2955
c456f082
AM		 2956 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2957 continue;
2958
f69da49f
AM		 2959 /* Allocate memory for the section contents. We use bfd_zalloc
2960 here in case unused entries are not reclaimed before the
2961 section's contents are written out. This should not happen,
2962 but this way if it does, we get a R_386_NONE reloc instead
2963 of garbage. */
a50b1753 2964 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 2965 if (s->contents == NULL)
b34976b6 2966 return FALSE;
252b5132
RH		 2967 }
2968
e41b3a13 2969 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 2970 && htab->plt_eh_frame->contents != NULL)
2971 {
2972 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
2973 sizeof (elf_i386_eh_frame_plt));
2974 bfd_put_32 (dynobj, htab->elf.splt->size,
2975 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
2976 }
e41b3a13 2977
ebe50bae 2978 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2979 {
2980 /* Add some entries to the .dynamic section. We fill in the
2981 values later, in elf_i386_finish_dynamic_sections, but we
2982 must add the entries now so that we get the correct size for
2983 the .dynamic section. The DT_DEBUG entry is filled in by the
2984 dynamic linker and used by the debugger. */
dc810e39 2985#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2986 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2987
36af4a4e 2988 if (info->executable)
252b5132 2989 {
dc810e39 2990 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2991 return FALSE;
252b5132
RH		 2992 }
2993
6de2ae4a 2994 if (htab->elf.splt->size != 0)
252b5132 2995 {
dc810e39
AM		 2996 if (!add_dynamic_entry (DT_PLTGOT, 0)
2997 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2998 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2999 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3000 return FALSE;
252b5132
RH		 3001 }
3002
3003 if (relocs)
3004 {
dc810e39
AM		 3005 if (!add_dynamic_entry (DT_REL, 0)
3006 || !add_dynamic_entry (DT_RELSZ, 0)
3007 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3008 return FALSE;
252b5132 3009
0c715baa
AM		 3010 /* If any dynamic relocs apply to a read-only section,
3011 then we need a DT_TEXTREL entry. */
248866a8 3012 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3013 elf_link_hash_traverse (&htab->elf,
3014 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3015
3016 if ((info->flags & DF_TEXTREL) != 0)
3017 {
3018 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3019 return FALSE;
0c715baa 3020 }
252b5132 3021 }
23209a78 3022 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3023 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3024 return FALSE;
252b5132 3025 }
dc810e39 3026#undef add_dynamic_entry
252b5132 3027
b34976b6 3028 return TRUE;
252b5132
RH		 3029}
3030
67a4f2b7
AO		 3031static bfd_boolean
3032elf_i386_always_size_sections (bfd *output_bfd,
3033 struct bfd_link_info *info)
3034{
3035 asection *tls_sec = elf_hash_table (info)->tls_sec;
3036
3037 if (tls_sec)
3038 {
3039 struct elf_link_hash_entry *tlsbase;
3040
3041 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3042 "_TLS_MODULE_BASE_",
3043 FALSE, FALSE, FALSE);
3044
3045 if (tlsbase && tlsbase->type == STT_TLS)
3046 {
4dfe6ac6 3047 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3048 struct bfd_link_hash_entry *bh = NULL;
3049 const struct elf_backend_data *bed
3050 = get_elf_backend_data (output_bfd);
3051
4dfe6ac6
NC		 3052 htab = elf_i386_hash_table (info);
3053 if (htab == NULL)
3054 return FALSE;
3055
67a4f2b7
AO		 3056 if (!(_bfd_generic_link_add_one_symbol
3057 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3058 tls_sec, 0, NULL, FALSE,
3059 bed->collect, &bh)))
3060 return FALSE;
9f03412a 3061
4dfe6ac6 3062 htab->tls_module_base = bh;
9f03412a 3063
67a4f2b7
AO		 3064 tlsbase = (struct elf_link_hash_entry *)bh;
3065 tlsbase->def_regular = 1;
3066 tlsbase->other = STV_HIDDEN;
3067 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3068 }
3069 }
3070
3071 return TRUE;
3072}
3073
38701953
AM		 3074/* Set the correct type for an x86 ELF section. We do this by the
3075 section name, which is a hack, but ought to work. */
3076
b34976b6 3077static bfd_boolean
55fd94b0
AM		 3078elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3079 Elf_Internal_Shdr *hdr,
3080 asection *sec)
38701953 3081{
91d6fa6a 3082 const char *name;
38701953
AM		 3083
3084 name = bfd_get_section_name (abfd, sec);
3085
3086 /* This is an ugly, but unfortunately necessary hack that is
3087 needed when producing EFI binaries on x86. It tells
3088 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3089 containing ELF relocation info. We need this hack in order to
3090 be able to generate ELF binaries that can be translated into
3091 EFI applications (which are essentially COFF objects). Those
3092 files contain a COFF ".reloc" section inside an ELFNN object,
3093 which would normally cause BFD to segfault because it would
3094 attempt to interpret this section as containing relocation
3095 entries for section "oc". With this hack enabled, ".reloc"
3096 will be treated as a normal data section, which will avoid the
3097 segfault. However, you won't be able to create an ELFNN binary
3098 with a section named "oc" that needs relocations, but that's
3099 the kind of ugly side-effects you get when detecting section
3100 types based on their names... In practice, this limitation is
3101 unlikely to bite. */
3102 if (strcmp (name, ".reloc") == 0)
3103 hdr->sh_type = SHT_PROGBITS;
3104
b34976b6 3105 return TRUE;
38701953
AM		 3106}
3107
9f03412a
AO		 3108/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3109 executables. Rather than setting it to the beginning of the TLS
3110 section, we have to set it to the end. This function may be called
3111 multiple times, it is idempotent. */
3112
3113static void
eb4ff4d6 3114elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3115{
4dfe6ac6 3116 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3117 struct bfd_link_hash_entry *base;
3118
3119 if (!info->executable)
3120 return;
3121
4dfe6ac6
NC		 3122 htab = elf_i386_hash_table (info);
3123 if (htab == NULL)
3124 return;
9f03412a 3125
4dfe6ac6
NC		 3126 base = htab->tls_module_base;
3127 if (base == NULL)
9f03412a
AO		 3128 return;
3129
4dfe6ac6 3130 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3131}
3132
13ae64f3
JJ		 3133/* Return the base VMA address which should be subtracted from real addresses
3134 when resolving @dtpoff relocation.
3135 This is PT_TLS segment p_vaddr. */
3136
3137static bfd_vma
eb4ff4d6 3138elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3139{
e1918d23
AM		 3140 /* If tls_sec is NULL, we should have signalled an error already. */
3141 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3142 return 0;
e1918d23 3143 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3144}
3145
3146/* Return the relocation value for @tpoff relocation
3147 if STT_TLS virtual address is ADDRESS. */
3148
3149static bfd_vma
eb4ff4d6 3150elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3151{
e1918d23 3152 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3153 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3154 bfd_vma static_tls_size;
13ae64f3 3155
e1918d23
AM		 3156 /* If tls_sec is NULL, we should have signalled an error already. */
3157 if (htab->tls_sec == NULL)
6a30718d 3158 return 0;
7dc98aea
RO		 3159
3160 /* Consider special static TLS alignment requirements. */
3161 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3162 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3163}
3164
252b5132
RH		 3165/* Relocate an i386 ELF section. */
3166
b34976b6 3167static bfd_boolean
55fd94b0
AM		 3168elf_i386_relocate_section (bfd *output_bfd,
3169 struct bfd_link_info *info,
3170 bfd *input_bfd,
3171 asection *input_section,
3172 bfd_byte *contents,
3173 Elf_Internal_Rela *relocs,
3174 Elf_Internal_Sym *local_syms,
3175 asection **local_sections)
252b5132 3176{
6725bdbf 3177 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3178 Elf_Internal_Shdr *symtab_hdr;
3179 struct elf_link_hash_entry **sym_hashes;
3180 bfd_vma *local_got_offsets;
67a4f2b7 3181 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3182 Elf_Internal_Rela *rel;
3183 Elf_Internal_Rela *relend;
3348747a 3184 bfd_boolean is_vxworks_tls;
25e762b9 3185 unsigned plt_entry_size;
252b5132 3186
0ffa91dd 3187 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3188
6725bdbf 3189 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3190 if (htab == NULL)
3191 return FALSE;
0ffa91dd 3192 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3193 sym_hashes = elf_sym_hashes (input_bfd);
3194 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3195 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3196 /* We have to handle relocations in vxworks .tls_vars sections
3197 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3198 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3199 && info->shared
3348747a
NS		 3200 && !strcmp (input_section->output_section->name,
3201 ".tls_vars"));
252b5132 3202
eb4ff4d6 3203 elf_i386_set_tls_module_base (info);
9f03412a 3204
25e762b9
RM		 3205 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3206
252b5132
RH		 3207 rel = relocs;
3208 relend = relocs + input_section->reloc_count;
3209 for (; rel < relend; rel++)
3210 {
13ae64f3 3211 unsigned int r_type;
252b5132
RH		 3212 reloc_howto_type *howto;
3213 unsigned long r_symndx;
3214 struct elf_link_hash_entry *h;
3215 Elf_Internal_Sym *sym;
3216 asection *sec;
67a4f2b7 3217 bfd_vma off, offplt;
252b5132 3218 bfd_vma relocation;
b34976b6 3219 bfd_boolean unresolved_reloc;
252b5132 3220 bfd_reloc_status_type r;
1b452ec6 3221 unsigned int indx;
13ae64f3 3222 int tls_type;
252b5132
RH		 3223
3224 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3225 if (r_type == R_386_GNU_VTINHERIT
3226 || r_type == R_386_GNU_VTENTRY)
252b5132 3227 continue;
dc47f327 3228
55fd94b0 3229 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3230 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3231 >= R_386_ext - R_386_standard)
3232 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3233 >= R_386_irelative - R_386_ext))
252b5132 3234 {
6ba842b6 3235 (*_bfd_error_handler)
d003868e
AM		 3236 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3237 input_bfd, input_section, r_type);
252b5132 3238 bfd_set_error (bfd_error_bad_value);
b34976b6 3239 return FALSE;
252b5132 3240 }
1b452ec6 3241 howto = elf_howto_table + indx;
252b5132
RH		 3242
3243 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3244 h = NULL;
3245 sym = NULL;
3246 sec = NULL;
b34976b6 3247 unresolved_reloc = FALSE;
252b5132
RH		 3248 if (r_symndx < symtab_hdr->sh_info)
3249 {
3250 sym = local_syms + r_symndx;
3251 sec = local_sections[r_symndx];
3252 relocation = (sec->output_section->vma
3253 + sec->output_offset
3254 + sym->st_value);
ab96bf03
AM		 3255
3256 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3257 && ((sec->flags & SEC_MERGE) != 0
3258 || (info->relocatable
3259 && sec->output_offset != 0)))
f8df10f4 3260 {
f8df10f4 3261 bfd_vma addend;
4a335f3d 3262 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3263
4a335f3d 3264 switch (howto->size)
f8df10f4 3265 {
4a335f3d
AM		 3266 case 0:
3267 addend = bfd_get_8 (input_bfd, where);
3268 if (howto->pc_relative)
3269 {
3270 addend = (addend ^ 0x80) - 0x80;
3271 addend += 1;
3272 }
3273 break;
3274 case 1:
3275 addend = bfd_get_16 (input_bfd, where);
3276 if (howto->pc_relative)
3277 {
3278 addend = (addend ^ 0x8000) - 0x8000;
3279 addend += 2;
3280 }
3281 break;
3282 case 2:
3283 addend = bfd_get_32 (input_bfd, where);
3284 if (howto->pc_relative)
3285 {
3286 addend = (addend ^ 0x80000000) - 0x80000000;
3287 addend += 4;
3288 }
3289 break;
3290 default:
3291 abort ();
f8df10f4
JJ		 3292 }
3293
ab96bf03
AM		 3294 if (info->relocatable)
3295 addend += sec->output_offset;
3296 else
3297 {
3298 asection *msec = sec;
3299 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3300 addend);
3301 addend -= relocation;
3302 addend += msec->output_section->vma + msec->output_offset;
3303 }
4a335f3d
AM		 3304
3305 switch (howto->size)
3306 {
3307 case 0:
16a10388 3308 /* FIXME: overflow checks. */
4a335f3d
AM		 3309 if (howto->pc_relative)
3310 addend -= 1;
3311 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3312 break;
3313 case 1:
3314 if (howto->pc_relative)
3315 addend -= 2;
3316 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3317 break;
3318 case 2:
3319 if (howto->pc_relative)
3320 addend -= 4;
3321 bfd_put_32 (input_bfd, addend, where);
3322 break;
3323 }
f8df10f4 3324 }
1f85278f
L		 3325 else if (!info->relocatable
3326 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3327 {
3328 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3329 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3330 FALSE);
c25bc9fc
L		 3331 if (h == NULL)
3332 abort ();
3333
23209a78 3334 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3335 h->root.u.def.value = sym->st_value;
3336 h->root.u.def.section = sec;
3337 }
252b5132
RH		 3338 }
3339 else
3340 {
3d540e93 3341 bfd_boolean warned ATTRIBUTE_UNUSED;
ffb2e45b 3342
b2a8e766
AM		 3343 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3344 r_symndx, symtab_hdr, sym_hashes,
3345 h, sec, relocation,
3346 unresolved_reloc, warned);
252b5132
RH		 3347 }
3348
dbaa2011 3349 if (sec != NULL && discarded_section (sec))
0672748a 3350 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3351 rel, 1, relend, howto, 0, contents);
9635fe29 3352
ab96bf03
AM		 3353 if (info->relocatable)
3354 continue;
3355
cbe950e9
L		 3356 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3357 it here if it is defined in a non-shared object. */
3358 if (h != NULL
3359 && h->type == STT_GNU_IFUNC
3360 && h->def_regular)
3361 {
3362 asection *plt, *gotplt, *base_got;
3363 bfd_vma plt_index;
4c544807 3364 const char *name;
cbe950e9
L		 3365
3366 if ((input_section->flags & SEC_ALLOC) == 0
3367 || h->plt.offset == (bfd_vma) -1)
3368 abort ();
3369
3370 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3371 if (htab->elf.splt != NULL)
cbe950e9 3372 {
6de2ae4a
L		 3373 plt = htab->elf.splt;
3374 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3375 }
3376 else
3377 {
6de2ae4a
L		 3378 plt = htab->elf.iplt;
3379 gotplt = htab->elf.igotplt;
cbe950e9
L		 3380 }
3381
3382 relocation = (plt->output_section->vma
3383 + plt->output_offset + h->plt.offset);
3384
3385 switch (r_type)
3386 {
3387 default:
4c544807
L		 3388 if (h->root.root.string)
3389 name = h->root.root.string;
3390 else
3391 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3392 NULL);
cbe950e9
L		 3393 (*_bfd_error_handler)
3394 (_("%B: relocation %s against STT_GNU_IFUNC "
3395 "symbol `%s' isn't handled by %s"), input_bfd,
3396 elf_howto_table[r_type].name,
4c544807 3397 name, __FUNCTION__);
cbe950e9
L		 3398 bfd_set_error (bfd_error_bad_value);
3399 return FALSE;
3400
3401 case R_386_32:
710ab287 3402 /* Generate dynamic relcoation only when there is a
c293fa49 3403 non-GOT reference in a shared object. */
710ab287
L		 3404 if (info->shared && h->non_got_ref)
3405 {
3406 Elf_Internal_Rela outrel;
3407 bfd_byte *loc;
3408 asection *sreloc;
3409 bfd_vma offset;
3410
c25bc9fc
L		 3411 /* Need a dynamic relocation to get the real function
3412 adddress. */
710ab287
L		 3413 offset = _bfd_elf_section_offset (output_bfd,
3414 info,
3415 input_section,
3416 rel->r_offset);
3417 if (offset == (bfd_vma) -1
3418 || offset == (bfd_vma) -2)
3419 abort ();
3420
3421 outrel.r_offset = (input_section->output_section->vma
3422 + input_section->output_offset
3423 + offset);
3424
3425 if (h->dynindx == -1
44c4ea11
L		 3426 || h->forced_local
3427 || info->executable)
710ab287
L		 3428 {
3429 /* This symbol is resolved locally. */
56b8aada
L		 3430 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3431 bfd_put_32 (output_bfd,
3432 (h->root.u.def.value
3433 + h->root.u.def.section->output_section->vma
3434 + h->root.u.def.section->output_offset),
3435 contents + offset);
710ab287
L		 3436 }
3437 else
56b8aada 3438 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3439
6de2ae4a 3440 sreloc = htab->elf.irelifunc;
710ab287
L		 3441 loc = sreloc->contents;
3442 loc += (sreloc->reloc_count++
3443 * sizeof (Elf32_External_Rel));
3444 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3445
3446 /* If this reloc is against an external symbol, we
3447 do not want to fiddle with the addend. Otherwise,
3448 we need to include the symbol value so that it
3449 becomes an addend for the dynamic reloc. For an
3450 internal symbol, we have updated addend. */
56b8aada 3451 continue;
710ab287 3452 }
d59a60e9 3453 /* FALLTHROUGH */
cbe950e9
L		 3454 case R_386_PC32:
3455 case R_386_PLT32:
3456 goto do_relocation;
3457
3458 case R_386_GOT32:
6de2ae4a 3459 base_got = htab->elf.sgot;
cbe950e9
L		 3460 off = h->got.offset;
3461
7afd84dc 3462 if (base_got == NULL)
cbe950e9
L		 3463 abort ();
3464
7afd84dc 3465 if (off == (bfd_vma) -1)
cbe950e9 3466 {
7afd84dc
L		 3467 /* We can't use h->got.offset here to save state, or
3468 even just remember the offset, as finish_dynamic_symbol
3469 would use that as offset into .got. */
6bbec505 3470
6de2ae4a 3471 if (htab->elf.splt != NULL)
7afd84dc 3472 {
25e762b9 3473 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3474 off = (plt_index + 3) * 4;
6de2ae4a 3475 base_got = htab->elf.sgotplt;
7afd84dc 3476 }
cbe950e9
L		 3477 else
3478 {
25e762b9 3479 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3480 off = plt_index * 4;
6de2ae4a 3481 base_got = htab->elf.igotplt;
7afd84dc
L		 3482 }
3483
3484 if (h->dynindx == -1
3485 || h->forced_local
3486 || info->symbolic)
3487 {
3488 /* This references the local defitionion. We must
3489 initialize this entry in the global offset table.
3490 Since the offset must always be a multiple of 8,
3491 we use the least significant bit to record
3492 whether we have initialized it already.
3493
3494 When doing a dynamic link, we create a .rela.got
3495 relocation entry to initialize the value. This
3496 is done in the finish_dynamic_symbol routine. */
3497 if ((off & 1) != 0)
3498 off &= ~1;
3499 else
3500 {
3501 bfd_put_32 (output_bfd, relocation,
3502 base_got->contents + off);
3503 h->got.offset |= 1;
3504 }
cbe950e9 3505 }
cbe950e9 3506
7afd84dc 3507 relocation = off;
cbe950e9 3508
7afd84dc 3509 /* Adjust for static executables. */
6de2ae4a 3510 if (htab->elf.splt == NULL)
7afd84dc
L		 3511 relocation += gotplt->output_offset;
3512 }
3513 else
0018b0a3
L		 3514 {
3515 relocation = (base_got->output_section->vma
3516 + base_got->output_offset + off
3517 - gotplt->output_section->vma
3518 - gotplt->output_offset);
3519 /* Adjust for static executables. */
6de2ae4a 3520 if (htab->elf.splt == NULL)
0018b0a3
L		 3521 relocation += gotplt->output_offset;
3522 }
3523
cbe950e9
L		 3524 goto do_relocation;
3525
3526 case R_386_GOTOFF:
3527 relocation -= (gotplt->output_section->vma
3528 + gotplt->output_offset);
3529 goto do_relocation;
3530 }
3531 }
3532
252b5132
RH		 3533 switch (r_type)
3534 {
3535 case R_386_GOT32:
3536 /* Relocation is to the entry for this symbol in the global
3537 offset table. */
6de2ae4a 3538 if (htab->elf.sgot == NULL)
ffb2e45b 3539 abort ();
252b5132
RH		 3540
3541 if (h != NULL)
3542 {
b34976b6 3543 bfd_boolean dyn;
252b5132
RH		 3544
3545 off = h->got.offset;
ebe50bae 3546 dyn = htab->elf.dynamic_sections_created;
26e41594 3547 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3548 || (info->shared
586119b3 3549 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3550 || (ELF_ST_VISIBILITY (h->other)
3551 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3552 {
3553 /* This is actually a static link, or it is a
3554 -Bsymbolic link and the symbol is defined
3555 locally, or the symbol was forced to be local
3556 because of a version file. We must initialize
3557 this entry in the global offset table. Since the
3558 offset must always be a multiple of 4, we use the
3559 least significant bit to record whether we have
3560 initialized it already.
3561
3562 When doing a dynamic link, we create a .rel.got
3563 relocation entry to initialize the value. This
3564 is done in the finish_dynamic_symbol routine. */
3565 if ((off & 1) != 0)
3566 off &= ~1;
3567 else
3568 {
3569 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3570 htab->elf.sgot->contents + off);
252b5132
RH		 3571 h->got.offset |= 1;
3572 }
3573 }
8c694914 3574 else
b34976b6 3575 unresolved_reloc = FALSE;
252b5132
RH		 3576 }
3577 else
3578 {
ffb2e45b
AM		 3579 if (local_got_offsets == NULL)
3580 abort ();
252b5132
RH		 3581
3582 off = local_got_offsets[r_symndx];
3583
3584 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3585 the least significant bit to record whether we have
3586 already generated the necessary reloc. */
252b5132
RH		 3587 if ((off & 1) != 0)
3588 off &= ~1;
3589 else
3590 {
6725bdbf 3591 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3592 htab->elf.sgot->contents + off);
252b5132
RH		 3593
3594 if (info->shared)
3595 {
947216bf
AM		 3596 asection *s;
3597 Elf_Internal_Rela outrel;
3598 bfd_byte *loc;
252b5132 3599
6de2ae4a 3600 s = htab->elf.srelgot;
947216bf 3601 if (s == NULL)
ffb2e45b 3602 abort ();
252b5132 3603
6de2ae4a
L		 3604 outrel.r_offset = (htab->elf.sgot->output_section->vma
3605 + htab->elf.sgot->output_offset
252b5132
RH		 3606 + off);
3607 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
947216bf
AM		 3608 loc = s->contents;
3609 loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3610 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 3611 }
3612
3613 local_got_offsets[r_symndx] |= 1;
3614 }
252b5132
RH		 3615 }
3616
ffb2e45b
AM		 3617 if (off >= (bfd_vma) -2)
3618 abort ();
3619
6de2ae4a
L		 3620 relocation = htab->elf.sgot->output_section->vma
3621 + htab->elf.sgot->output_offset + off
3622 - htab->elf.sgotplt->output_section->vma
3623 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3624 break;
3625
3626 case R_386_GOTOFF:
3627 /* Relocation is relative to the start of the global offset
3628 table. */
3629
90f487df
L		 3630 /* Check to make sure it isn't a protected function symbol
3631 for shared library since it may not be local when used
41bed6dd
L		 3632 as function address. We also need to make sure that a
3633 symbol is defined locally. */
3634 if (info->shared && h)
90f487df 3635 {
41bed6dd
L		 3636 if (!h->def_regular)
3637 {
3638 const char *v;
3639
3640 switch (ELF_ST_VISIBILITY (h->other))
3641 {
3642 case STV_HIDDEN:
3643 v = _("hidden symbol");
3644 break;
3645 case STV_INTERNAL:
3646 v = _("internal symbol");
3647 break;
3648 case STV_PROTECTED:
3649 v = _("protected symbol");
3650 break;
3651 default:
3652 v = _("symbol");
3653 break;
3654 }
3655
3656 (*_bfd_error_handler)
3657 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3658 input_bfd, v, h->root.root.string);
3659 bfd_set_error (bfd_error_bad_value);
3660 return FALSE;
3661 }
3662 else if (!info->executable
bdb892b9 3663 && !SYMBOLIC_BIND (info, h)
41bed6dd
L		 3664 && h->type == STT_FUNC
3665 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3666 {
3667 (*_bfd_error_handler)
3668 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3669 input_bfd, h->root.root.string);
3670 bfd_set_error (bfd_error_bad_value);
3671 return FALSE;
3672 }
90f487df
L		 3673 }
3674
8c37241b
JJ		 3675 /* Note that sgot is not involved in this
3676 calculation. We always want the start of .got.plt. If we
3677 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3678 permitted by the ABI, we might have to change this
3679 calculation. */
6de2ae4a
L		 3680 relocation -= htab->elf.sgotplt->output_section->vma
3681 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3682 break;
3683
3684 case R_386_GOTPC:
3685 /* Use global offset table as symbol value. */
6de2ae4a
L		 3686 relocation = htab->elf.sgotplt->output_section->vma
3687 + htab->elf.sgotplt->output_offset;
b34976b6 3688 unresolved_reloc = FALSE;
252b5132
RH		 3689 break;
3690
3691 case R_386_PLT32:
3692 /* Relocation is to the entry for this symbol in the
3693 procedure linkage table. */
3694
dd5724d5 3695 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3696 without using the procedure linkage table. */
252b5132
RH		 3697 if (h == NULL)
3698 break;
3699
dd5724d5 3700 if (h->plt.offset == (bfd_vma) -1
6de2ae4a 3701 || htab->elf.splt == NULL)
252b5132
RH		 3702 {
3703 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3704 happens when statically linking PIC code, or when
3705 using -Bsymbolic. */
252b5132
RH		 3706 break;
3707 }
3708
6de2ae4a
L		 3709 relocation = (htab->elf.splt->output_section->vma
3710 + htab->elf.splt->output_offset
252b5132 3711 + h->plt.offset);
b34976b6 3712 unresolved_reloc = FALSE;
252b5132
RH		 3713 break;
3714
3715 case R_386_32:
3716 case R_386_PC32:
3348747a
NS		 3717 if ((input_section->flags & SEC_ALLOC) == 0
3718 || is_vxworks_tls)
ec338859
AM		 3719 break;
3720
12d0ee4a 3721 if ((info->shared
ef5aade5
L		 3722 && (h == NULL
3723 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3724 || h->root.type != bfd_link_hash_undefweak)
12d0ee4a 3725 && (r_type != R_386_PC32
f6c52c13 3726 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3727 || (ELIMINATE_COPY_RELOCS
3728 && !info->shared
12d0ee4a
AM		 3729 && h != NULL
3730 && h->dynindx != -1
f5385ebf
AM		 3731 && !h->non_got_ref
3732 && ((h->def_dynamic
3733 && !h->def_regular)
28d0b90e 3734 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3735 || h->root.type == bfd_link_hash_undefined)))
252b5132 3736 {
947216bf
AM		 3737 Elf_Internal_Rela outrel;
3738 bfd_byte *loc;
b34976b6 3739 bfd_boolean skip, relocate;
0c715baa 3740 asection *sreloc;
252b5132
RH		 3741
3742 /* When generating a shared object, these relocations
3743 are copied into the output file to be resolved at run
3744 time. */
3745
b34976b6
AM		 3746 skip = FALSE;
3747 relocate = FALSE;
252b5132 3748
c629eae0
JJ		 3749 outrel.r_offset =
3750 _bfd_elf_section_offset (output_bfd, info, input_section,
3751 rel->r_offset);
3752 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3753 skip = TRUE;
0bb2d96a 3754 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3755 skip = TRUE, relocate = TRUE;
252b5132
RH		 3756 outrel.r_offset += (input_section->output_section->vma
3757 + input_section->output_offset);
3758
3759 if (skip)
0bb2d96a 3760 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3761 else if (h != NULL
3762 && h->dynindx != -1
3763 && (r_type == R_386_PC32
3764 || !info->shared
55255dae 3765 || !SYMBOLIC_BIND (info, h)
f5385ebf 3766 || !h->def_regular))
0bb2d96a 3767 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3768 else
3769 {
5a15f56f 3770 /* This symbol is local, or marked to become local. */
b34976b6 3771 relocate = TRUE;
5a15f56f 3772 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3773 }
3774
cbe950e9 3775 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3776
62d78908
L		 3777 if (sreloc == NULL || sreloc->contents == NULL)
3778 {
3779 r = bfd_reloc_notsupported;
3780 goto check_relocation_error;
3781 }
0c715baa 3782
947216bf
AM		 3783 loc = sreloc->contents;
3784 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
e7c33416 3785
0c715baa 3786 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 3787
3788 /* If this reloc is against an external symbol, we do
3789 not want to fiddle with the addend. Otherwise, we
3790 need to include the symbol value so that it becomes
3791 an addend for the dynamic reloc. */
0f88be7a 3792 if (! relocate)
252b5132
RH		 3793 continue;
3794 }
252b5132
RH		 3795 break;
3796
37e55690 3797 case R_386_TLS_IE:
1d85728f 3798 if (!info->executable)
37e55690 3799 {
947216bf
AM		 3800 Elf_Internal_Rela outrel;
3801 bfd_byte *loc;
37e55690 3802 asection *sreloc;
37e55690
JJ		 3803
3804 outrel.r_offset = rel->r_offset
3805 + input_section->output_section->vma
3806 + input_section->output_offset;
3807 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3808 sreloc = elf_section_data (input_section)->sreloc;
3809 if (sreloc == NULL)
3810 abort ();
947216bf
AM		 3811 loc = sreloc->contents;
3812 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 3813 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3814 }
3815 /* Fall through */
3816
13ae64f3 3817 case R_386_TLS_GD:
67a4f2b7
AO		 3818 case R_386_TLS_GOTDESC:
3819 case R_386_TLS_DESC_CALL:
13ae64f3 3820 case R_386_TLS_IE_32:
37e55690 3821 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3822 tls_type = GOT_UNKNOWN;
3823 if (h == NULL && local_got_offsets)
3824 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3825 else if (h != NULL)
142411ca 3826 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3827 if (tls_type == GOT_TLS_IE)
3828 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3829
3830 if (! elf_i386_tls_transition (info, input_bfd,
3831 input_section, contents,
3832 symtab_hdr, sym_hashes,
3833 &r_type, tls_type, rel,
4c544807 3834 relend, h, r_symndx))
142411ca 3835 return FALSE;
13ae64f3
JJ		 3836
3837 if (r_type == R_386_TLS_LE_32)
3838 {
82e51918 3839 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3840 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3841 {
142411ca 3842 unsigned int type;
13ae64f3
JJ		 3843 bfd_vma roff;
3844
3845 /* GD->LE transition. */
13ae64f3 3846 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3847 if (type == 0x04)
3848 {
3849 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3850 Change it into:
3851 movl %gs:0, %eax; subl $foo@tpoff, %eax
3852 (6 byte form of subl). */
13ae64f3
JJ		 3853 memcpy (contents + rel->r_offset - 3,
3854 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3855 roff = rel->r_offset + 5;
13ae64f3
JJ		 3856 }
3857 else
3858 {
142411ca
L		 3859 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3860 Change it into:
3861 movl %gs:0, %eax; subl $foo@tpoff, %eax
3862 (6 byte form of subl). */
3863 memcpy (contents + rel->r_offset - 2,
3864 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3865 roff = rel->r_offset + 6;
13ae64f3 3866 }
eb4ff4d6 3867 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3868 contents + roff);
a3fadc9a 3869 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 3870 rel++;
3871 continue;
3872 }
67a4f2b7
AO		 3873 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3874 {
3875 /* GDesc -> LE transition.
3876 It's originally something like:
3877 leal x@tlsdesc(%ebx), %eax
3878
3879 leal x@ntpoff, %eax
3880
3881 Registers other than %eax may be set up here. */
3882
142411ca 3883 unsigned int val;
67a4f2b7
AO		 3884 bfd_vma roff;
3885
67a4f2b7 3886 roff = rel->r_offset;
67a4f2b7 3887 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3888
3889 /* Now modify the instruction as appropriate. */
3890 /* aoliva FIXME: remove the above and xor the byte
3891 below with 0x86. */
3892 bfd_put_8 (output_bfd, val ^ 0x86,
3893 contents + roff - 1);
eb4ff4d6 3894 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 3895 contents + roff);
3896 continue;
3897 }
3898 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3899 {
3900 /* GDesc -> LE transition.
3901 It's originally:
3902 call *(%eax)
3903 Turn it into:
142411ca 3904 xchg %ax,%ax */
67a4f2b7 3905
67a4f2b7 3906 bfd_vma roff;
6bbec505 3907
67a4f2b7 3908 roff = rel->r_offset;
10efb593 3909 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3910 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3911 continue;
3912 }
37e55690 3913 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 3914 {
142411ca 3915 unsigned int val;
13ae64f3
JJ		 3916
3917 /* IE->LE transition:
37e55690
JJ		 3918 Originally it can be one of:
3919 movl foo, %eax
3920 movl foo, %reg
3921 addl foo, %reg
3922 We change it into:
3923 movl $foo, %eax
3924 movl $foo, %reg
3925 addl $foo, %reg. */
37e55690 3926 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 3927 if (val == 0xa1)
3928 {
3929 /* movl foo, %eax. */
55fd94b0
AM		 3930 bfd_put_8 (output_bfd, 0xb8,
3931 contents + rel->r_offset - 1);
37e55690 3932 }
299bf759 3933 else
37e55690 3934 {
142411ca
L		 3935 unsigned int type;
3936
55fd94b0
AM		 3937 type = bfd_get_8 (input_bfd,
3938 contents + rel->r_offset - 2);
299bf759 3939 switch (type)
26e41594 3940 {
299bf759
L		 3941 case 0x8b:
3942 /* movl */
299bf759
L		 3943 bfd_put_8 (output_bfd, 0xc7,
3944 contents + rel->r_offset - 2);
3945 bfd_put_8 (output_bfd,
3946 0xc0 | ((val >> 3) & 7),
3947 contents + rel->r_offset - 1);
3948 break;
3949 case 0x03:
3950 /* addl */
299bf759
L		 3951 bfd_put_8 (output_bfd, 0x81,
3952 contents + rel->r_offset - 2);
3953 bfd_put_8 (output_bfd,
3954 0xc0 | ((val >> 3) & 7),
3955 contents + rel->r_offset - 1);
3956 break;
3957 default:
3958 BFD_FAIL ();
3959 break;
26e41594 3960 }
37e55690 3961 }
eb4ff4d6 3962 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3963 contents + rel->r_offset);
3964 continue;
3965 }
3966 else
3967 {
3968 unsigned int val, type;
3969
3970 /* {IE_32,GOTIE}->LE transition:
3971 Originally it can be one of:
13ae64f3 3972 subl foo(%reg1), %reg2
13ae64f3 3973 movl foo(%reg1), %reg2
37e55690 3974 addl foo(%reg1), %reg2
13ae64f3
JJ		 3975 We change it into:
3976 subl $foo, %reg2
37e55690
JJ		 3977 movl $foo, %reg2 (6 byte form)
3978 addl $foo, %reg2. */
13ae64f3
JJ		 3979 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3980 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 3981 if (type == 0x8b)
3982 {
3983 /* movl */
13ae64f3
JJ		 3984 bfd_put_8 (output_bfd, 0xc7,
3985 contents + rel->r_offset - 2);
3986 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3987 contents + rel->r_offset - 1);
3988 }
3989 else if (type == 0x2b)
3990 {
3991 /* subl */
13ae64f3
JJ		 3992 bfd_put_8 (output_bfd, 0x81,
3993 contents + rel->r_offset - 2);
3994 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3995 contents + rel->r_offset - 1);
3996 }
37e55690
JJ		 3997 else if (type == 0x03)
3998 {
3999 /* addl */
4000 bfd_put_8 (output_bfd, 0x81,
4001 contents + rel->r_offset - 2);
4002 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4003 contents + rel->r_offset - 1);
4004 }
13ae64f3
JJ		 4005 else
4006 BFD_FAIL ();
37e55690 4007 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4008 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4009 contents + rel->r_offset);
4010 else
eb4ff4d6 4011 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4012 contents + rel->r_offset);
13ae64f3
JJ		 4013 continue;
4014 }
4015 }
4016
6de2ae4a 4017 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4018 abort ();
4019
4020 if (h != NULL)
67a4f2b7
AO		 4021 {
4022 off = h->got.offset;
4023 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4024 }
13ae64f3
JJ		 4025 else
4026 {
4027 if (local_got_offsets == NULL)
4028 abort ();
4029
4030 off = local_got_offsets[r_symndx];
67a4f2b7 4031 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4032 }
4033
4034 if ((off & 1) != 0)
4035 off &= ~1;
26e41594 4036 else
13ae64f3 4037 {
947216bf
AM		 4038 Elf_Internal_Rela outrel;
4039 bfd_byte *loc;
91d6fa6a 4040 int dr_type;
67a4f2b7 4041 asection *sreloc;
13ae64f3 4042
6de2ae4a 4043 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4044 abort ();
4045
67a4f2b7
AO		 4046 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4047
4048 if (GOT_TLS_GDESC_P (tls_type))
4049 {
4050 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4051 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4052 <= htab->elf.sgotplt->size);
4053 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4054 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4055 + offplt
4056 + htab->sgotplt_jump_table_size);
6de2ae4a 4057 sreloc = htab->elf.srelplt;
67a4f2b7 4058 loc = sreloc->contents;
5ae0bfb6
RS		 4059 loc += (htab->next_tls_desc_index++
4060 * sizeof (Elf32_External_Rel));
67a4f2b7
AO		 4061 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
4062 <= sreloc->contents + sreloc->size);
4063 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4064 if (indx == 0)
4065 {
4066 BFD_ASSERT (! unresolved_reloc);
4067 bfd_put_32 (output_bfd,
eb4ff4d6 4068 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4069 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4070 + htab->sgotplt_jump_table_size + 4);
4071 }
4072 else
4073 {
4074 bfd_put_32 (output_bfd, 0,
6de2ae4a 4075 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4076 + htab->sgotplt_jump_table_size + 4);
4077 }
4078 }
4079
6de2ae4a 4080 sreloc = htab->elf.srelgot;
67a4f2b7 4081
6de2ae4a
L		 4082 outrel.r_offset = (htab->elf.sgot->output_section->vma
4083 + htab->elf.sgot->output_offset + off);
13ae64f3 4084
67a4f2b7 4085 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4086 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4087 else if (GOT_TLS_GDESC_P (tls_type))
4088 goto dr_done;
37e55690
JJ		 4089 else if (tls_type == GOT_TLS_IE_POS)
4090 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4091 else
4092 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4093
37e55690 4094 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4095 bfd_put_32 (output_bfd,
4096 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4097 htab->elf.sgot->contents + off);
37e55690 4098 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4099 bfd_put_32 (output_bfd,
eb4ff4d6 4100 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4101 htab->elf.sgot->contents + off);
67a4f2b7 4102 else if (dr_type != R_386_TLS_DESC)
c366c25e 4103 bfd_put_32 (output_bfd, 0,
6de2ae4a 4104 htab->elf.sgot->contents + off);
13ae64f3 4105 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7
AO		 4106
4107 loc = sreloc->contents;
4108 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
4109 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
4110 <= sreloc->contents + sreloc->size);
13ae64f3
JJ		 4111 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4112
67a4f2b7 4113 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4114 {
4115 if (indx == 0)
4116 {
82e51918 4117 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4118 bfd_put_32 (output_bfd,
eb4ff4d6 4119 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4120 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4121 }
4122 else
4123 {
4124 bfd_put_32 (output_bfd, 0,
6de2ae4a 4125 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4126 outrel.r_info = ELF32_R_INFO (indx,
4127 R_386_TLS_DTPOFF32);
4128 outrel.r_offset += 4;
67a4f2b7 4129 sreloc->reloc_count++;
947216bf 4130 loc += sizeof (Elf32_External_Rel);
67a4f2b7
AO		 4131 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
4132 <= sreloc->contents + sreloc->size);
947216bf 4133 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
13ae64f3
JJ		 4134 }
4135 }
37e55690
JJ		 4136 else if (tls_type == GOT_TLS_IE_BOTH)
4137 {
4138 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4139 (indx == 0
4140 ? relocation - elf_i386_dtpoff_base (info)
4141 : 0),
6de2ae4a 4142 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4143 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4144 outrel.r_offset += 4;
67a4f2b7 4145 sreloc->reloc_count++;
947216bf 4146 loc += sizeof (Elf32_External_Rel);
37e55690
JJ		 4147 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4148 }
13ae64f3 4149
67a4f2b7 4150 dr_done:
13ae64f3
JJ		 4151 if (h != NULL)
4152 h->got.offset |= 1;
4153 else
4154 local_got_offsets[r_symndx] |= 1;
4155 }
4156
67a4f2b7
AO		 4157 if (off >= (bfd_vma) -2
4158 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4159 abort ();
67a4f2b7
AO		 4160 if (r_type == R_386_TLS_GOTDESC
4161 || r_type == R_386_TLS_DESC_CALL)
4162 {
4163 relocation = htab->sgotplt_jump_table_size + offplt;
4164 unresolved_reloc = FALSE;
4165 }
4166 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4167 {
6de2ae4a
L		 4168 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4169 + htab->elf.sgotplt->output_offset;
4170 relocation = htab->elf.sgot->output_section->vma
4171 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4172 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4173 && tls_type == GOT_TLS_IE_BOTH)
4174 relocation += 4;
4175 if (r_type == R_386_TLS_IE)
8c37241b 4176 relocation += g_o_t;
b34976b6 4177 unresolved_reloc = FALSE;
13ae64f3 4178 }
67a4f2b7 4179 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4180 {
4181 unsigned int val, type;
4182 bfd_vma roff;
4183
4184 /* GD->IE transition. */
13ae64f3 4185 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4186 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4187 if (type == 0x04)
4188 {
4189 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4190 Change it into:
4191 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4192 val >>= 3;
142411ca 4193 roff = rel->r_offset - 3;
13ae64f3
JJ		 4194 }
4195 else
4196 {
4197 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4198 Change it into:
4199 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4200 roff = rel->r_offset - 2;
4201 }
4202 memcpy (contents + roff,
4203 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4204 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4205 /* If foo is used only with foo@gotntpoff(%reg) and
4206 foo@indntpoff, but not with foo@gottpoff(%reg), change
4207 subl $foo@gottpoff(%reg), %eax
4208 into:
4209 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4210 if (tls_type == GOT_TLS_IE_POS)
4211 contents[roff + 6] = 0x03;
8c37241b 4212 bfd_put_32 (output_bfd,
6de2ae4a
L		 4213 htab->elf.sgot->output_section->vma
4214 + htab->elf.sgot->output_offset + off
4215 - htab->elf.sgotplt->output_section->vma
4216 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4217 contents + roff + 8);
4218 /* Skip R_386_PLT32. */
4219 rel++;
4220 continue;
4221 }
67a4f2b7
AO		 4222 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4223 {
4224 /* GDesc -> IE transition.
4225 It's originally something like:
4226 leal x@tlsdesc(%ebx), %eax
4227
4228 Change it to:
142411ca 4229 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4230 or:
4231 movl x@gottpoff(%ebx), %eax # before negl %eax
4232
4233 Registers other than %eax may be set up here. */
4234
67a4f2b7
AO		 4235 bfd_vma roff;
4236
4237 /* First, make sure it's a leal adding ebx to a 32-bit
4238 offset into any register, although it's probably
4239 almost always going to be eax. */
4240 roff = rel->r_offset;
67a4f2b7
AO		 4241
4242 /* Now modify the instruction as appropriate. */
4243 /* To turn a leal into a movl in the form we use it, it
4244 suffices to change the first byte from 0x8d to 0x8b.
4245 aoliva FIXME: should we decide to keep the leal, all
4246 we have to do is remove the statement below, and
4247 adjust the relaxation of R_386_TLS_DESC_CALL. */
4248 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4249
4250 if (tls_type == GOT_TLS_IE_BOTH)
4251 off += 4;
4252
4253 bfd_put_32 (output_bfd,
6de2ae4a
L		 4254 htab->elf.sgot->output_section->vma
4255 + htab->elf.sgot->output_offset + off
4256 - htab->elf.sgotplt->output_section->vma
4257 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4258 contents + roff);
4259 continue;
4260 }
4261 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4262 {
4263 /* GDesc -> IE transition.
4264 It's originally:
4265 call *(%eax)
4266
4267 Change it to:
142411ca 4268 xchg %ax,%ax
67a4f2b7
AO		 4269 or
4270 negl %eax
4271 depending on how we transformed the TLS_GOTDESC above.
4272 */
4273
67a4f2b7
AO		 4274 bfd_vma roff;
4275
67a4f2b7 4276 roff = rel->r_offset;
67a4f2b7
AO		 4277
4278 /* Now modify the instruction as appropriate. */
4279 if (tls_type != GOT_TLS_IE_NEG)
4280 {
10efb593
L		 4281 /* xchg %ax,%ax */
4282 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4283 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4284 }
4285 else
4286 {
4287 /* negl %eax */
4288 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4289 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4290 }
4291
4292 continue;
4293 }
4294 else
4295 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4296 break;
4297
4298 case R_386_TLS_LDM:
142411ca
L		 4299 if (! elf_i386_tls_transition (info, input_bfd,
4300 input_section, contents,
4301 symtab_hdr, sym_hashes,
4302 &r_type, GOT_UNKNOWN, rel,
4c544807 4303 relend, h, r_symndx))
142411ca 4304 return FALSE;
13ae64f3 4305
142411ca
L		 4306 if (r_type != R_386_TLS_LDM)
4307 {
13ae64f3 4308 /* LD->LE transition:
13ae64f3
JJ		 4309 leal foo(%reg), %eax; call ___tls_get_addr.
4310 We change it into:
4311 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4312 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4313 memcpy (contents + rel->r_offset - 2,
4314 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4315 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4316 rel++;
4317 continue;
4318 }
4319
6de2ae4a 4320 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4321 abort ();
4322
4323 off = htab->tls_ldm_got.offset;
4324 if (off & 1)
4325 off &= ~1;
4326 else
4327 {
947216bf
AM		 4328 Elf_Internal_Rela outrel;
4329 bfd_byte *loc;
13ae64f3 4330
6de2ae4a 4331 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4332 abort ();
4333
6de2ae4a
L		 4334 outrel.r_offset = (htab->elf.sgot->output_section->vma
4335 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4336
4337 bfd_put_32 (output_bfd, 0,
6de2ae4a 4338 htab->elf.sgot->contents + off);
13ae64f3 4339 bfd_put_32 (output_bfd, 0,
6de2ae4a 4340 htab->elf.sgot->contents + off + 4);
13ae64f3 4341 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
6de2ae4a
L		 4342 loc = htab->elf.srelgot->contents;
4343 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
13ae64f3
JJ		 4344 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4345 htab->tls_ldm_got.offset |= 1;
4346 }
6de2ae4a
L		 4347 relocation = htab->elf.sgot->output_section->vma
4348 + htab->elf.sgot->output_offset + off
4349 - htab->elf.sgotplt->output_section->vma
4350 - htab->elf.sgotplt->output_offset;
b34976b6 4351 unresolved_reloc = FALSE;
13ae64f3
JJ		 4352 break;
4353
4354 case R_386_TLS_LDO_32:
959b0961 4355 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4356 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4357 else
4358 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4359 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4360 break;
4361
4362 case R_386_TLS_LE_32:
13ae64f3 4363 case R_386_TLS_LE:
1d85728f 4364 if (!info->executable)
37e55690 4365 {
947216bf 4366 Elf_Internal_Rela outrel;
37e55690 4367 asection *sreloc;
947216bf 4368 bfd_byte *loc;
37e55690
JJ		 4369
4370 outrel.r_offset = rel->r_offset
4371 + input_section->output_section->vma
4372 + input_section->output_offset;
4373 if (h != NULL && h->dynindx != -1)
4374 indx = h->dynindx;
4375 else
4376 indx = 0;
4377 if (r_type == R_386_TLS_LE_32)
4378 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4379 else
4380 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4381 sreloc = elf_section_data (input_section)->sreloc;
4382 if (sreloc == NULL)
4383 abort ();
947216bf
AM		 4384 loc = sreloc->contents;
4385 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 4386 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4387 if (indx)
4388 continue;
4389 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4390 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4391 else
eb4ff4d6 4392 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4393 }
4394 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4395 relocation = elf_i386_tpoff (info, relocation);
37e55690 4396 else
eb4ff4d6 4397 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4398 break;
4399
252b5132
RH		 4400 default:
4401 break;
4402 }
4403
239e1f3a
AM		 4404 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4405 because such sections are not SEC_ALLOC and thus ld.so will
4406 not process them. */
8c694914 4407 if (unresolved_reloc
239e1f3a 4408 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4409 && h->def_dynamic)
4410 && _bfd_elf_section_offset (output_bfd, info, input_section,
4411 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4412 {
4413 (*_bfd_error_handler)
843fe662 4414 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4415 input_bfd,
4416 input_section,
6a30718d 4417 (long) rel->r_offset,
843fe662 4418 howto->name,
6a30718d 4419 h->root.root.string);
b34976b6 4420 return FALSE;
6a30718d 4421 }
83be169b 4422
cbe950e9 4423do_relocation:
252b5132
RH		 4424 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4425 contents, rel->r_offset,
55fd94b0 4426 relocation, 0);
252b5132 4427
62d78908 4428check_relocation_error:
cf5c0c5b 4429 if (r != bfd_reloc_ok)
252b5132 4430 {
cf5c0c5b 4431 const char *name;
ffb2e45b 4432
cf5c0c5b
AM		 4433 if (h != NULL)
4434 name = h->root.root.string;
4435 else
4436 {
4437 name = bfd_elf_string_from_elf_section (input_bfd,
4438 symtab_hdr->sh_link,
4439 sym->st_name);
4440 if (name == NULL)
b34976b6 4441 return FALSE;
cf5c0c5b
AM		 4442 if (*name == '\0')
4443 name = bfd_section_name (input_bfd, sec);
4444 }
ffb2e45b 4445
cf5c0c5b
AM		 4446 if (r == bfd_reloc_overflow)
4447 {
cf5c0c5b 4448 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4449 (info, (h ? &h->root : NULL), name, howto->name,
4450 (bfd_vma) 0, input_bfd, input_section,
4451 rel->r_offset)))
b34976b6 4452 return FALSE;
cf5c0c5b
AM		 4453 }
4454 else
4455 {
4456 (*_bfd_error_handler)
d003868e
AM		 4457 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4458 input_bfd, input_section,
cf5c0c5b 4459 (long) rel->r_offset, name, (int) r);
b34976b6 4460 return FALSE;
cf5c0c5b 4461 }
252b5132
RH		 4462 }
4463 }
4464
b34976b6 4465 return TRUE;
252b5132
RH		 4466}
4467
4468/* Finish up dynamic symbol handling. We set the contents of various
4469 dynamic sections here. */
4470
b34976b6 4471static bfd_boolean
55fd94b0
AM		 4472elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4473 struct bfd_link_info *info,
4474 struct elf_link_hash_entry *h,
4475 Elf_Internal_Sym *sym)
252b5132 4476{
6725bdbf 4477 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4478 unsigned plt_entry_size;
4479 const struct elf_i386_backend_data *abed;
252b5132 4480
6725bdbf 4481 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4482 if (htab == NULL)
4483 return FALSE;
252b5132 4484
25e762b9
RM		 4485 abed = get_elf_i386_backend_data (output_bfd);
4486 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4487
252b5132
RH		 4488 if (h->plt.offset != (bfd_vma) -1)
4489 {
252b5132
RH		 4490 bfd_vma plt_index;
4491 bfd_vma got_offset;
947216bf
AM		 4492 Elf_Internal_Rela rel;
4493 bfd_byte *loc;
cbe950e9
L		 4494 asection *plt, *gotplt, *relplt;
4495
4496 /* When building a static executable, use .iplt, .igot.plt and
4497 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4498 if (htab->elf.splt != NULL)
cbe950e9 4499 {
6de2ae4a
L		 4500 plt = htab->elf.splt;
4501 gotplt = htab->elf.sgotplt;
4502 relplt = htab->elf.srelplt;
cbe950e9
L		 4503 }
4504 else
4505 {
6de2ae4a
L		 4506 plt = htab->elf.iplt;
4507 gotplt = htab->elf.igotplt;
4508 relplt = htab->elf.irelplt;
cbe950e9 4509 }
252b5132
RH		 4510
4511 /* This symbol has an entry in the procedure linkage table. Set
4512 it up. */
4513
cbe950e9
L		 4514 if ((h->dynindx == -1
4515 && !((h->forced_local || info->executable)
4516 && h->def_regular
4517 && h->type == STT_GNU_IFUNC))
4518 || plt == NULL
4519 || gotplt == NULL
4520 || relplt == NULL)
f6df62c8 4521 return FALSE;
252b5132
RH		 4522
4523 /* Get the index in the procedure linkage table which
4524 corresponds to this symbol. This is the index of this symbol
4525 in all the symbols for which we are making plt entries. The
cbe950e9 4526 first entry in the procedure linkage table is reserved.
252b5132 4527
cbe950e9 4528 Get the offset into the .got table of the entry that
252b5132 4529 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4530 The first three are reserved.
6bbec505 4531
cbe950e9
L		 4532 For static executables, we don't reserve anything. */
4533
6de2ae4a 4534 if (plt == htab->elf.splt)
cbe950e9 4535 {
e1f98742
L		 4536 got_offset = h->plt.offset / plt_entry_size - 1;
4537 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4538 }
4539 else
4540 {
e1f98742
L		 4541 got_offset = h->plt.offset / plt_entry_size;
4542 got_offset = got_offset * 4;
cbe950e9 4543 }
252b5132
RH		 4544
4545 /* Fill in the entry in the procedure linkage table. */
4546 if (! info->shared)
4547 {
25e762b9
RM		 4548 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4549 abed->plt->plt_entry_size);
252b5132 4550 bfd_put_32 (output_bfd,
cbe950e9
L		 4551 (gotplt->output_section->vma
4552 + gotplt->output_offset
252b5132 4553 + got_offset),
25e762b9
RM		 4554 plt->contents + h->plt.offset
4555 + abed->plt->plt_got_offset);
eac338cf 4556
25e762b9 4557 if (abed->is_vxworks)
eac338cf
PB		 4558 {
4559 int s, k, reloc_index;
4560
4561 /* Create the R_386_32 relocation referencing the GOT
4562 for this PLT entry. */
4563
4564 /* S: Current slot number (zero-based). */
25e762b9
RM		 4565 s = ((h->plt.offset - abed->plt->plt_entry_size)
4566 / abed->plt->plt_entry_size);
eac338cf
PB		 4567 /* K: Number of relocations for PLTResolve. */
4568 if (info->shared)
4569 k = PLTRESOLVE_RELOCS_SHLIB;
4570 else
4571 k = PLTRESOLVE_RELOCS;
4572 /* Skip the PLTresolve relocations, and the relocations for
4573 the other PLT slots. */
4574 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4575 loc = (htab->srelplt2->contents + reloc_index
4576 * sizeof (Elf32_External_Rel));
4577
6de2ae4a
L		 4578 rel.r_offset = (htab->elf.splt->output_section->vma
4579 + htab->elf.splt->output_offset
eac338cf 4580 + h->plt.offset + 2),
7325306f 4581 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4582 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4583
4584 /* Create the R_386_32 relocation referencing the beginning of
4585 the PLT for this GOT entry. */
6de2ae4a
L		 4586 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4587 + htab->elf.sgotplt->output_offset
eac338cf 4588 + got_offset);
7325306f 4589 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4590 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4591 loc + sizeof (Elf32_External_Rel));
4592 }
252b5132
RH		 4593 }
4594 else
4595 {
25e762b9
RM		 4596 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4597 abed->plt->plt_entry_size);
252b5132 4598 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4599 plt->contents + h->plt.offset
4600 + abed->plt->plt_got_offset);
252b5132
RH		 4601 }
4602
252b5132
RH		 4603 /* Fill in the entry in the global offset table. */
4604 bfd_put_32 (output_bfd,
cbe950e9
L		 4605 (plt->output_section->vma
4606 + plt->output_offset
252b5132 4607 + h->plt.offset
25e762b9 4608 + abed->plt->plt_lazy_offset),
cbe950e9 4609 gotplt->contents + got_offset);
252b5132
RH		 4610
4611 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4612 rel.r_offset = (gotplt->output_section->vma
4613 + gotplt->output_offset
252b5132 4614 + got_offset);
cbe950e9
L		 4615 if (h->dynindx == -1
4616 || ((info->executable
4617 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4618 && h->def_regular
4619 && h->type == STT_GNU_IFUNC))
4620 {
4621 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4622 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4623 in the .got.plt section. */
4624 bfd_put_32 (output_bfd,
23209a78 4625 (h->root.u.def.value
cbe950e9
L		 4626 + h->root.u.def.section->output_section->vma
4627 + h->root.u.def.section->output_offset),
4628 gotplt->contents + got_offset);
4629 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4630 /* R_386_IRELATIVE comes last. */
4631 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4632 }
4633 else
e1f98742
L		 4634 {
4635 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4636 plt_index = htab->next_jump_slot_index++;
4637 }
cbe950e9 4638 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4639 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4640
e1f98742
L		 4641 /* Don't fill PLT entry for static executables. */
4642 if (plt == htab->elf.splt)
4643 {
4644 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4645 plt->contents + h->plt.offset
4646 + abed->plt->plt_reloc_offset);
4647 bfd_put_32 (output_bfd, - (h->plt.offset
4648 + abed->plt->plt_plt_offset + 4),
4649 plt->contents + h->plt.offset
4650 + abed->plt->plt_plt_offset);
4651 }
4652
f5385ebf 4653 if (!h->def_regular)
252b5132
RH		 4654 {
4655 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 4656 the .plt section. Leave the value if there were any
4657 relocations where pointer equality matters (this is a clue
51b64d56
AM		 4658 for the dynamic linker, to make function pointer
4659 comparisons work between an application and shared
c6585bbb
JJ		 4660 library), otherwise set it to zero. If a function is only
4661 called from a binary, there is no need to slow down
4662 shared libraries because of that. */
252b5132 4663 sym->st_shndx = SHN_UNDEF;
f5385ebf 4664 if (!h->pointer_equality_needed)
c6585bbb 4665 sym->st_value = 0;
252b5132
RH		 4666 }
4667 }
4668
13ae64f3 4669 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4670 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4671 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4672 {
947216bf
AM		 4673 Elf_Internal_Rela rel;
4674 bfd_byte *loc;
252b5132
RH		 4675
4676 /* This symbol has an entry in the global offset table. Set it
4677 up. */
4678
6de2ae4a 4679 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4680 abort ();
252b5132 4681
6de2ae4a
L		 4682 rel.r_offset = (htab->elf.sgot->output_section->vma
4683 + htab->elf.sgot->output_offset
dc810e39 4684 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4685
dd5724d5
AM		 4686 /* If this is a static link, or it is a -Bsymbolic link and the
4687 symbol is defined locally or was forced to be local because
4688 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4689 The entry in the global offset table will already have been
4690 initialized in the relocate_section function. */
710ab287 4691 if (h->def_regular
0018b0a3
L		 4692 && h->type == STT_GNU_IFUNC)
4693 {
710ab287
L		 4694 if (info->shared)
4695 {
4696 /* Generate R_386_GLOB_DAT. */
4697 goto do_glob_dat;
4698 }
4699 else
4700 {
cd2b2c10
L		 4701 asection *plt;
4702
710ab287
L		 4703 if (!h->pointer_equality_needed)
4704 abort ();
4705
4706 /* For non-shared object, we can't use .got.plt, which
4707 contains the real function addres if we need pointer
4708 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4709 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4710 bfd_put_32 (output_bfd,
4711 (plt->output_section->vma
4712 + plt->output_offset + h->plt.offset),
6de2ae4a 4713 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4714 return TRUE;
4715 }
0018b0a3
L		 4716 }
4717 else if (info->shared
4718 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4719 {
6725bdbf 4720 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4721 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4722 }
252b5132
RH		 4723 else
4724 {
dd5724d5 4725 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4726do_glob_dat:
6725bdbf 4727 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4728 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4729 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4730 }
4731
6de2ae4a
L		 4732 loc = htab->elf.srelgot->contents;
4733 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 4734 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 4735 }
4736
f5385ebf 4737 if (h->needs_copy)
252b5132 4738 {
947216bf
AM		 4739 Elf_Internal_Rela rel;
4740 bfd_byte *loc;
252b5132
RH		 4741
4742 /* This symbol needs a copy reloc. Set it up. */
4743
ffb2e45b
AM		 4744 if (h->dynindx == -1
4745 || (h->root.type != bfd_link_hash_defined
4746 && h->root.type != bfd_link_hash_defweak)
4747 || htab->srelbss == NULL)
4748 abort ();
252b5132
RH		 4749
4750 rel.r_offset = (h->root.u.def.value
4751 + h->root.u.def.section->output_section->vma
4752 + h->root.u.def.section->output_offset);
4753 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
947216bf
AM		 4754 loc = htab->srelbss->contents;
4755 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 4756 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 4757 }
4758
b34976b6 4759 return TRUE;
252b5132
RH		 4760}
4761
c25bc9fc
L		 4762/* Finish up local dynamic symbol handling. We set the contents of
4763 various dynamic sections here. */
4764
4765static bfd_boolean
4766elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4767{
4768 struct elf_link_hash_entry *h
4769 = (struct elf_link_hash_entry *) *slot;
4770 struct bfd_link_info *info
23209a78 4771 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4772
4773 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4774 h, NULL);
4775}
4776
38701953
AM		 4777/* Used to decide how to sort relocs in an optimal manner for the
4778 dynamic linker, before writing them out. */
4779
4780static enum elf_reloc_type_class
55fd94b0 4781elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
38701953 4782{
55fd94b0 4783 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4784 {
4785 case R_386_RELATIVE:
4786 return reloc_class_relative;
4787 case R_386_JUMP_SLOT:
4788 return reloc_class_plt;
4789 case R_386_COPY:
4790 return reloc_class_copy;
4791 default:
4792 return reloc_class_normal;
4793 }
4794}
4795
252b5132
RH		 4796/* Finish up the dynamic sections. */
4797
b34976b6 4798static bfd_boolean
55fd94b0
AM		 4799elf_i386_finish_dynamic_sections (bfd *output_bfd,
4800 struct bfd_link_info *info)
252b5132 4801{
6725bdbf 4802 struct elf_i386_link_hash_table *htab;
252b5132 4803 bfd *dynobj;
252b5132 4804 asection *sdyn;
25e762b9 4805 const struct elf_i386_backend_data *abed;
252b5132 4806
6725bdbf 4807 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4808 if (htab == NULL)
4809 return FALSE;
4810
ebe50bae 4811 dynobj = htab->elf.dynobj;
3d4d4302 4812 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4813 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4814
ebe50bae 4815 if (htab->elf.dynamic_sections_created)
252b5132 4816 {
252b5132
RH		 4817 Elf32_External_Dyn *dyncon, *dynconend;
4818
6de2ae4a 4819 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4820 abort ();
252b5132
RH		 4821
4822 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4823 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4824 for (; dyncon < dynconend; dyncon++)
4825 {
4826 Elf_Internal_Dyn dyn;
51b64d56 4827 asection *s;
252b5132
RH		 4828
4829 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4830
4831 switch (dyn.d_tag)
4832 {
4833 default:
25e762b9
RM		 4834 if (abed->is_vxworks
4835 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 4836 break;
0ac8d2ca 4837 continue;
252b5132
RH		 4838
4839 case DT_PLTGOT:
6de2ae4a 4840 s = htab->elf.sgotplt;
8c37241b 4841 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 4842 break;
4843
252b5132 4844 case DT_JMPREL:
6de2ae4a 4845 s = htab->elf.srelplt;
6348e046 4846 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 4847 break;
4848
4849 case DT_PLTRELSZ:
6de2ae4a 4850 s = htab->elf.srelplt;
eea6121a 4851 dyn.d_un.d_val = s->size;
252b5132
RH		 4852 break;
4853
4854 case DT_RELSZ:
4855 /* My reading of the SVR4 ABI indicates that the
4856 procedure linkage table relocs (DT_JMPREL) should be
4857 included in the overall relocs (DT_REL). This is
4858 what Solaris does. However, UnixWare can not handle
4859 that case. Therefore, we override the DT_RELSZ entry
6348e046 4860 here to make it not include the JMPREL relocs. */
6de2ae4a 4861 s = htab->elf.srelplt;
6348e046
AM		 4862 if (s == NULL)
4863 continue;
eea6121a 4864 dyn.d_un.d_val -= s->size;
6348e046
AM		 4865 break;
4866
4867 case DT_REL:
4868 /* We may not be using the standard ELF linker script.
4869 If .rel.plt is the first .rel section, we adjust
4870 DT_REL to not include it. */
6de2ae4a 4871 s = htab->elf.srelplt;
6348e046
AM		 4872 if (s == NULL)
4873 continue;
4874 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4875 continue;
eea6121a 4876 dyn.d_un.d_ptr += s->size;
252b5132
RH		 4877 break;
4878 }
0ac8d2ca
AM		 4879
4880 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 4881 }
4882
4883 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 4884 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 4885 {
4886 if (info->shared)
eac338cf 4887 {
25e762b9
RM		 4888 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
4889 abed->plt->plt0_entry_size);
4890 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4891 abed->plt0_pad_byte,
4892 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 4893 }
252b5132
RH		 4894 else
4895 {
25e762b9
RM		 4896 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
4897 abed->plt->plt0_entry_size);
4898 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4899 abed->plt0_pad_byte,
4900 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 4901 bfd_put_32 (output_bfd,
6de2ae4a
L		 4902 (htab->elf.sgotplt->output_section->vma
4903 + htab->elf.sgotplt->output_offset
6725bdbf 4904 + 4),
25e762b9
RM		 4905 htab->elf.splt->contents
4906 + abed->plt->plt0_got1_offset);
252b5132 4907 bfd_put_32 (output_bfd,
6de2ae4a
L		 4908 (htab->elf.sgotplt->output_section->vma
4909 + htab->elf.sgotplt->output_offset
6725bdbf 4910 + 8),
25e762b9
RM		 4911 htab->elf.splt->contents
4912 + abed->plt->plt0_got2_offset);
eac338cf 4913
25e762b9 4914 if (abed->is_vxworks)
eac338cf
PB		 4915 {
4916 Elf_Internal_Rela rel;
7325306f 4917
eac338cf
PB		 4918 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4919 On IA32 we use REL relocations so the addend goes in
4920 the PLT directly. */
6de2ae4a
L		 4921 rel.r_offset = (htab->elf.splt->output_section->vma
4922 + htab->elf.splt->output_offset
25e762b9 4923 + abed->plt->plt0_got1_offset);
7325306f 4924 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4925 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4926 htab->srelplt2->contents);
4927 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 4928 rel.r_offset = (htab->elf.splt->output_section->vma
4929 + htab->elf.splt->output_offset
25e762b9 4930 + abed->plt->plt0_got2_offset);
7325306f 4931 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4932 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4933 htab->srelplt2->contents +
4934 sizeof (Elf32_External_Rel));
4935 }
252b5132
RH		 4936 }
4937
4938 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4939 really seem like the right value. */
6de2ae4a 4940 elf_section_data (htab->elf.splt->output_section)
6725bdbf 4941 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 4942
4943 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 4944 if (abed->is_vxworks && !info->shared)
eac338cf 4945 {
25e762b9
RM		 4946 int num_plts = (htab->elf.splt->size
4947 / abed->plt->plt_entry_size) - 1;
4c9b0de6 4948 unsigned char *p;
eac338cf
PB		 4949
4950 p = htab->srelplt2->contents;
4951 if (info->shared)
4952 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4953 else
4954 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4955
4956 for (; num_plts; num_plts--)
4957 {
4958 Elf_Internal_Rela rel;
4959 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4960 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4961 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4962 p += sizeof (Elf32_External_Rel);
4963
4964 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4965 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4966 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4967 p += sizeof (Elf32_External_Rel);
4968 }
4969 }
252b5132
RH		 4970 }
4971 }
4972
6de2ae4a 4973 if (htab->elf.sgotplt)
252b5132 4974 {
56d4289c
L		 4975 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4976 {
4977 (*_bfd_error_handler)
4978 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4979 return FALSE;
4980 }
4981
12d0ee4a 4982 /* Fill in the first three entries in the global offset table. */
6de2ae4a 4983 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 4984 {
4985 bfd_put_32 (output_bfd,
55fd94b0 4986 (sdyn == NULL ? 0
12d0ee4a 4987 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 4988 htab->elf.sgotplt->contents);
4989 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4990 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 4991 }
252b5132 4992
6de2ae4a 4993 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 4994 }
8c37241b 4995
e41b3a13 4996 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 4997 if (htab->plt_eh_frame != NULL
4998 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 4999 {
5000 if (htab->elf.splt != NULL
5001 && htab->elf.splt->size != 0
5002 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5003 && htab->elf.splt->output_section != NULL
5004 && htab->plt_eh_frame->output_section != NULL)
5005 {
5006 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5007 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5008 + htab->plt_eh_frame->output_offset
5009 + PLT_FDE_START_OFFSET;
5010 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5011 htab->plt_eh_frame->contents
5012 + PLT_FDE_START_OFFSET);
5013 }
5014 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5015 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5016 {
5017 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5018 htab->plt_eh_frame,
5019 htab->plt_eh_frame->contents))
5020 return FALSE;
5021 }
5022 }
5023
6de2ae4a
L		 5024 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5025 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5026
c25bc9fc
L		 5027 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5028 htab_traverse (htab->loc_hash_table,
5029 elf_i386_finish_local_dynamic_symbol,
5030 info);
5031
b34976b6 5032 return TRUE;
252b5132
RH		 5033}
5034
4c45e5c9
JJ		 5035/* Return address for Ith PLT stub in section PLT, for relocation REL
5036 or (bfd_vma) -1 if it should not be included. */
5037
5038static bfd_vma
5039elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
5040 const arelent *rel ATTRIBUTE_UNUSED)
5041{
25e762b9 5042 return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
4c45e5c9
JJ		 5043}
5044
fdc90cb4
JJ		 5045/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5046
5047static bfd_boolean
5048elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5049{
5050 if (h->plt.offset != (bfd_vma) -1
5051 && !h->def_regular
5052 && !h->pointer_equality_needed)
5053 return FALSE;
5054
5055 return _bfd_elf_hash_symbol (h);
5056}
4c45e5c9 5057
d8045f23
NC		 5058/* Hook called by the linker routine which adds symbols from an object
5059 file. */
5060
5061static bfd_boolean
c16153ae 5062elf_i386_add_symbol_hook (bfd * abfd,
d8045f23
NC		 5063 struct bfd_link_info * info ATTRIBUTE_UNUSED,
5064 Elf_Internal_Sym * sym,
5065 const char ** namep ATTRIBUTE_UNUSED,
5066 flagword * flagsp ATTRIBUTE_UNUSED,
5067 asection ** secp ATTRIBUTE_UNUSED,
5068 bfd_vma * valp ATTRIBUTE_UNUSED)
5069{
c16153ae 5070 if ((abfd->flags & DYNAMIC) == 0
f64b2e8d
NC		 5071 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5072 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
5073 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC		 5074
5075 return TRUE;
5076}
5077
252b5132
RH		 5078#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
5079#define TARGET_LITTLE_NAME "elf32-i386"
5080#define ELF_ARCH bfd_arch_i386
ae95ffa6 5081#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5082#define ELF_MACHINE_CODE EM_386
5083#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5084
5085#define elf_backend_can_gc_sections 1
51b64d56 5086#define elf_backend_can_refcount 1
252b5132
RH		 5087#define elf_backend_want_got_plt 1
5088#define elf_backend_plt_readonly 1
5089#define elf_backend_want_plt_sym 0
5090#define elf_backend_got_header_size 12
e41b3a13 5091#define elf_backend_plt_alignment 4
252b5132 5092
8c29f035
AM		 5093/* Support RELA for objdump of prelink objects. */
5094#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5095#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5096
13ae64f3 5097#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5098
dd5724d5
AM		 5099#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5100#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
c25bc9fc 5101#define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
dd5724d5 5102#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5103#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM		 5104
5105#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5106#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5107#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5108#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5109#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5110#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5111#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5112#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5113#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5114#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5115#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5116#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5117#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5118#define elf_backend_relocate_section elf_i386_relocate_section
5119#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5120#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5121#define elf_backend_omit_section_dynsym \
5122 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 5123#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 5124#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23
NC		 5125#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
5126#undef elf_backend_post_process_headers
5127#define elf_backend_post_process_headers _bfd_elf_set_osabi
dd5724d5 5128
252b5132 5129#include "elf32-target.h"
2bc3c89a
AM		 5130
5131/* FreeBSD support. */
5132
5133#undef TARGET_LITTLE_SYM
5134#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
5135#undef TARGET_LITTLE_NAME
5136#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5137#undef ELF_OSABI
5138#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5139
5140/* The kernel recognizes executables as valid only if they carry a
5141 "FreeBSD" label in the ELF header. So we put this label on all
5142 executables and (for simplicity) also all other object files. */
5143
2bc3c89a 5144static void
d8045f23 5145elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5146{
d8045f23 5147 _bfd_elf_set_osabi (abfd, info);
2bc3c89a 5148
2bc3c89a
AM		 5149#ifdef OLD_FREEBSD_ABI_LABEL
5150 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5151 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 5152#endif
2bc3c89a
AM		 5153}
5154
5155#undef elf_backend_post_process_headers
d8045f23 5156#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5157#undef elf32_bed
5158#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5159
d8045f23
NC		 5160#undef elf_backend_add_symbol_hook
5161
2bc3c89a 5162#include "elf32-target.h"
eac338cf 5163
a6cc6b3b
RO		 5164/* Solaris 2. */
5165
5166#undef TARGET_LITTLE_SYM
5167#define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec
5168#undef TARGET_LITTLE_NAME
5169#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5170
5171/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5172 objects won't be recognized. */
5173#undef ELF_OSABI
5174
5175#undef elf32_bed
5176#define elf32_bed elf32_i386_sol2_bed
5177
7dc98aea
RO		 5178/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5179 boundary. */
5180#undef elf_backend_static_tls_alignment
5181#define elf_backend_static_tls_alignment 8
5182
a6cc6b3b
RO		 5183/* The Solaris 2 ABI requires a plt symbol on all platforms.
5184
5185 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5186 File, p.63. */
5187#undef elf_backend_want_plt_sym
5188#define elf_backend_want_plt_sym 1
5189
5190#include "elf32-target.h"
5191
a27e4371
RM		 5192/* Native Client support. */
5193
5194#undef TARGET_LITTLE_SYM
5195#define TARGET_LITTLE_SYM bfd_elf32_i386_nacl_vec
5196#undef TARGET_LITTLE_NAME
5197#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5198#undef elf32_bed
5199#define elf32_bed elf32_i386_nacl_bed
5200
5201#undef ELF_MAXPAGESIZE
5202#define ELF_MAXPAGESIZE 0x10000
5203
5204/* Restore defaults. */
5205#undef ELF_OSABI
5206#undef elf_backend_want_plt_sym
5207#define elf_backend_want_plt_sym 0
5208#undef elf_backend_post_process_headers
5209#define elf_backend_post_process_headers _bfd_elf_set_osabi
5210#undef elf_backend_static_tls_alignment
5211
5212/* NaCl uses substantially different PLT entries for the same effects. */
5213
5214#undef elf_backend_plt_alignment
5215#define elf_backend_plt_alignment 5
5216#define NACL_PLT_ENTRY_SIZE 64
5217#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5218
5219static const bfd_byte elf_i386_nacl_plt0_entry[] =
5220 {
5221 0xff, 0x35, /* pushl contents of address */
5222 0, 0, 0, 0, /* replaced with address of .got + 4. */
5223 0x8b, 0x0d, /* movl contents of address, %ecx */
5224 0, 0, 0, 0, /* replaced with address of .got + 8. */
5225 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5226 0xff, 0xe1 /* jmp *%ecx */
5227 };
5228
5229static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5230 {
5231 0x8b, 0x0d, /* movl contents of address, %ecx */
5232 0, 0, 0, 0, /* replaced with GOT slot address. */
5233 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5234 0xff, 0xe1, /* jmp *%ecx */
5235
5236 /* Pad to the next 32-byte boundary with nop instructions. */
5237 0x90,
5238 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5239 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5240
5241 /* Lazy GOT entries point here (32-byte aligned). */
5242 0x68, /* pushl immediate */
5243 0, 0, 0, 0, /* replaced with reloc offset. */
5244 0xe9, /* jmp relative */
5245 0, 0, 0, 0, /* replaced with offset to .plt. */
5246
5247 /* Pad to the next 32-byte boundary with nop instructions. */
5248 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5249 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5250 0x90, 0x90
5251 };
5252
5253static const bfd_byte
5254elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5255 {
5256 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5257 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5258 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5259 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5260
5261 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5262 so pad to that size with nop instructions. */
5263 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5264 };
5265
5266static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5267 {
5268 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5269 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5270 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5271 0xff, 0xe1, /* jmp *%ecx */
5272
5273 /* Pad to the next 32-byte boundary with nop instructions. */
5274 0x90,
5275 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5276 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5277
5278 /* Lazy GOT entries point here (32-byte aligned). */
5279 0x68, /* pushl immediate */
5280 0, 0, 0, 0, /* replaced with offset into relocation table. */
5281 0xe9, /* jmp relative */
5282 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5283
5284 /* Pad to the next 32-byte boundary with nop instructions. */
5285 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5286 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5287 0x90, 0x90
5288 };
5289
5290static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5291 {
5292#if (PLT_CIE_LENGTH != 20 \
5293 || PLT_FDE_LENGTH != 36 \
5294 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5295 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5296# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5297#endif
5298 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5299 0, 0, 0, 0, /* CIE ID */
5300 1, /* CIE version */
5301 'z', 'R', 0, /* Augmentation string */
5302 1, /* Code alignment factor */
5303 0x7c, /* Data alignment factor: -4 */
5304 8, /* Return address column */
5305 1, /* Augmentation size */
5306 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5307 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5308 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5309 DW_CFA_nop, DW_CFA_nop,
5310
5311 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5312 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5313 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5314 0, 0, 0, 0, /* .plt size goes here */
5315 0, /* Augmentation size */
5316 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5317 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5318 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5319 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5320 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5321 13, /* Block length */
5322 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5323 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5324 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5325 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5326 DW_CFA_nop, DW_CFA_nop
5327 };
5328
5329static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5330 {
5331 elf_i386_nacl_plt0_entry, /* plt0_entry */
5332 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5333 2, /* plt0_got1_offset */
5334 8, /* plt0_got2_offset */
5335 elf_i386_nacl_plt_entry, /* plt_entry */
5336 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5337 2, /* plt_got_offset */
5338 33, /* plt_reloc_offset */
5339 38, /* plt_plt_offset */
5340 32, /* plt_lazy_offset */
5341 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5342 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5343 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5344 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5345 };
5346
5347static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5348 {
5349 &elf_i386_nacl_plt, /* plt */
5350 0x90, /* plt0_pad_byte: nop insn */
5351 0, /* is_vxworks */
5352 };
5353
5354#undef elf_backend_arch_data
5355#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5356
5a68afcf
RM		 5357#undef elf_backend_modify_segment_map
5358#define elf_backend_modify_segment_map nacl_modify_segment_map
5359#undef elf_backend_modify_program_headers
5360#define elf_backend_modify_program_headers nacl_modify_program_headers
5361
a27e4371
RM		 5362#include "elf32-target.h"
5363
5a68afcf
RM		 5364/* Restore defaults. */
5365#undef elf_backend_modify_segment_map
5366#undef elf_backend_modify_program_headers
5367
eac338cf
PB		 5368/* VxWorks support. */
5369
5370#undef TARGET_LITTLE_SYM
5371#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
5372#undef TARGET_LITTLE_NAME
5373#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5374#undef ELF_OSABI
a27e4371
RM		 5375#undef elf_backend_plt_alignment
5376#define elf_backend_plt_alignment 4
eac338cf 5377
23209a78
RM		 5378static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5379 {
25e762b9 5380 &elf_i386_plt, /* plt */
23209a78
RM		 5381 0x90, /* plt0_pad_byte */
5382 1, /* is_vxworks */
5383 };
eac338cf 5384
23209a78
RM		 5385#undef elf_backend_arch_data
5386#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5387
13285a1b
AM		 5388#undef elf_backend_relocs_compatible
5389#undef elf_backend_post_process_headers
eac338cf
PB		 5390#undef elf_backend_add_symbol_hook
5391#define elf_backend_add_symbol_hook \
5392 elf_vxworks_add_symbol_hook
5393#undef elf_backend_link_output_symbol_hook
5394#define elf_backend_link_output_symbol_hook \
9c72ff84 5395 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5396#undef elf_backend_emit_relocs
5397#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5398#undef elf_backend_final_write_processing
5399#define elf_backend_final_write_processing \
5400 elf_vxworks_final_write_processing
7dc98aea 5401#undef elf_backend_static_tls_alignment
eac338cf
PB		 5402
5403/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5404 define it. */
5405#undef elf_backend_want_plt_sym
5406#define elf_backend_want_plt_sym 1
5407
5408#undef elf32_bed
5409#define elf32_bed elf32_i386_vxworks_bed
5410
5411#include "elf32-target.h"
GDB Binutils - Deliverables
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