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Mark .gnu.lto_* sections with SHF_EXCLUDE.
[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,
4dfe6ac6 3 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
252b5132 4
571fe01f 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
571fe01f
NC		 7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
571fe01f 10 (at your option) any later version.
252b5132 11
571fe01f
NC		 12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
252b5132 16
571fe01f
NC		 17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
cd123cb7
NC		 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
252b5132 21
252b5132 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
252b5132
RH		 24#include "bfdlink.h"
25#include "libbfd.h"
26#include "elf-bfd.h"
eac338cf 27#include "elf-vxworks.h"
142411ca 28#include "bfd_stdint.h"
c25bc9fc
L		 29#include "objalloc.h"
30#include "hashtab.h"
252b5132 31
55fd94b0
AM		 32/* 386 uses REL relocations instead of RELA. */
33#define USE_REL 1
252b5132
RH		 34
35#include "elf/i386.h"
36
37static reloc_howto_type elf_howto_table[]=
38{
b34976b6 39 HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
1b452ec6 40 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 41 TRUE, 0x00000000, 0x00000000, FALSE),
42 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 43 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 44 TRUE, 0xffffffff, 0xffffffff, FALSE),
45 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 46 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 47 TRUE, 0xffffffff, 0xffffffff, TRUE),
48 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 49 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 50 TRUE, 0xffffffff, 0xffffffff, FALSE),
51 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 52 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 53 TRUE, 0xffffffff, 0xffffffff, TRUE),
54 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 55 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 56 TRUE, 0xffffffff, 0xffffffff, FALSE),
57 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 58 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 59 TRUE, 0xffffffff, 0xffffffff, FALSE),
60 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 61 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 62 TRUE, 0xffffffff, 0xffffffff, FALSE),
63 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 64 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 65 TRUE, 0xffffffff, 0xffffffff, FALSE),
66 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 67 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 68 TRUE, 0xffffffff, 0xffffffff, FALSE),
69 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 70 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 71 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 72
dc47f327
AM		 73 /* We have a gap in the reloc numbers here.
74 R_386_standard counts the number up to this point, and
75 R_386_ext_offset is the value to subtract from a reloc type of
76 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 77#define R_386_standard (R_386_GOTPC + 1)
78#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 79
37e55690 80 /* These relocs are a GNU extension. */
b34976b6 81 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 82 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 83 TRUE, 0xffffffff, 0xffffffff, FALSE),
84 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 85 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 86 TRUE, 0xffffffff, 0xffffffff, FALSE),
87 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 88 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 89 TRUE, 0xffffffff, 0xffffffff, FALSE),
90 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 91 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 92 TRUE, 0xffffffff, 0xffffffff, FALSE),
93 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 94 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 95 TRUE, 0xffffffff, 0xffffffff, FALSE),
96 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 97 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 98 TRUE, 0xffffffff, 0xffffffff, FALSE),
99 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 100 bfd_elf_generic_reloc, "R_386_16",
b34976b6 101 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 102 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 103 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 104 TRUE, 0xffff, 0xffff, TRUE),
105 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 106 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 107 TRUE, 0xff, 0xff, FALSE),
108 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 109 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 110 TRUE, 0xff, 0xff, TRUE),
dc47f327 111
55fd94b0
AM		 112#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
113#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 114 /* These are common with Solaris TLS implementation. */
b34976b6 115 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 116 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 117 TRUE, 0xffffffff, 0xffffffff, FALSE),
118 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 119 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 120 TRUE, 0xffffffff, 0xffffffff, FALSE),
121 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 122 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 123 TRUE, 0xffffffff, 0xffffffff, FALSE),
124 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 125 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 126 TRUE, 0xffffffff, 0xffffffff, FALSE),
127 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 128 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 129 TRUE, 0xffffffff, 0xffffffff, FALSE),
130 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 131 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 132 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 133 EMPTY_HOWTO (38),
134 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
135 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
136 TRUE, 0xffffffff, 0xffffffff, FALSE),
137 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
138 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
139 FALSE, 0, 0, FALSE),
140 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
141 bfd_elf_generic_reloc, "R_386_TLS_DESC",
142 TRUE, 0xffffffff, 0xffffffff, FALSE),
cbe950e9
L		 143 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
144 bfd_elf_generic_reloc, "R_386_IRELATIVE",
145 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 146
147 /* Another gap. */
cbe950e9
L		 148#define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset)
149#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative)
252b5132
RH		 150
151/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 152 HOWTO (R_386_GNU_VTINHERIT, /* type */
153 0, /* rightshift */
154 2, /* size (0 = byte, 1 = short, 2 = long) */
155 0, /* bitsize */
b34976b6 156 FALSE, /* pc_relative */
252b5132
RH		 157 0, /* bitpos */
158 complain_overflow_dont, /* complain_on_overflow */
159 NULL, /* special_function */
160 "R_386_GNU_VTINHERIT", /* name */
b34976b6 161 FALSE, /* partial_inplace */
252b5132
RH		 162 0, /* src_mask */
163 0, /* dst_mask */
b34976b6 164 FALSE), /* pcrel_offset */
252b5132
RH		 165
166/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 167 HOWTO (R_386_GNU_VTENTRY, /* type */
168 0, /* rightshift */
169 2, /* size (0 = byte, 1 = short, 2 = long) */
170 0, /* bitsize */
b34976b6 171 FALSE, /* pc_relative */
252b5132
RH		 172 0, /* bitpos */
173 complain_overflow_dont, /* complain_on_overflow */
174 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
175 "R_386_GNU_VTENTRY", /* name */
b34976b6 176 FALSE, /* partial_inplace */
252b5132
RH		 177 0, /* src_mask */
178 0, /* dst_mask */
b34976b6 179 FALSE) /* pcrel_offset */
dc47f327 180
55fd94b0 181#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 182
183};
184
252b5132 185#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 186#define TRACE(str) \
187 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 188#else
189#define TRACE(str)
190#endif
191
192static reloc_howto_type *
55fd94b0
AM		 193elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
194 bfd_reloc_code_real_type code)
252b5132
RH		 195{
196 switch (code)
197 {
198 case BFD_RELOC_NONE:
199 TRACE ("BFD_RELOC_NONE");
55fd94b0 200 return &elf_howto_table[R_386_NONE];
252b5132
RH		 201
202 case BFD_RELOC_32:
203 TRACE ("BFD_RELOC_32");
55fd94b0 204 return &elf_howto_table[R_386_32];
252b5132
RH		 205
206 case BFD_RELOC_CTOR:
207 TRACE ("BFD_RELOC_CTOR");
55fd94b0 208 return &elf_howto_table[R_386_32];
252b5132
RH		 209
210 case BFD_RELOC_32_PCREL:
211 TRACE ("BFD_RELOC_PC32");
55fd94b0 212 return &elf_howto_table[R_386_PC32];
252b5132
RH		 213
214 case BFD_RELOC_386_GOT32:
215 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 216 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 217
218 case BFD_RELOC_386_PLT32:
219 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 220 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 221
222 case BFD_RELOC_386_COPY:
223 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 224 return &elf_howto_table[R_386_COPY];
252b5132
RH		 225
226 case BFD_RELOC_386_GLOB_DAT:
227 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 228 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 229
230 case BFD_RELOC_386_JUMP_SLOT:
231 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 232 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 233
234 case BFD_RELOC_386_RELATIVE:
235 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 236 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 237
238 case BFD_RELOC_386_GOTOFF:
239 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 240 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 241
242 case BFD_RELOC_386_GOTPC:
243 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 244 return &elf_howto_table[R_386_GOTPC];
252b5132 245
37e55690
JJ		 246 /* These relocs are a GNU extension. */
247 case BFD_RELOC_386_TLS_TPOFF:
248 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 249 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 250
251 case BFD_RELOC_386_TLS_IE:
252 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 253 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 254
255 case BFD_RELOC_386_TLS_GOTIE:
256 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 257 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 258
13ae64f3
JJ		 259 case BFD_RELOC_386_TLS_LE:
260 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 261 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 262
263 case BFD_RELOC_386_TLS_GD:
264 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 265 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 266
267 case BFD_RELOC_386_TLS_LDM:
268 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 269 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 270
252b5132
RH		 271 case BFD_RELOC_16:
272 TRACE ("BFD_RELOC_16");
55fd94b0 273 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 274
275 case BFD_RELOC_16_PCREL:
276 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 277 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 278
279 case BFD_RELOC_8:
280 TRACE ("BFD_RELOC_8");
55fd94b0 281 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 282
283 case BFD_RELOC_8_PCREL:
284 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 285 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 286
13ae64f3
JJ		 287 /* Common with Sun TLS implementation. */
288 case BFD_RELOC_386_TLS_LDO_32:
289 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 290 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 291
292 case BFD_RELOC_386_TLS_IE_32:
293 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 294 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 295
296 case BFD_RELOC_386_TLS_LE_32:
297 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 298 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 299
300 case BFD_RELOC_386_TLS_DTPMOD32:
301 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 302 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 303
304 case BFD_RELOC_386_TLS_DTPOFF32:
305 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 306 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 307
308 case BFD_RELOC_386_TLS_TPOFF32:
309 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 310 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 311
67a4f2b7
AO		 312 case BFD_RELOC_386_TLS_GOTDESC:
313 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
314 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
315
316 case BFD_RELOC_386_TLS_DESC_CALL:
317 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
318 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
319
320 case BFD_RELOC_386_TLS_DESC:
321 TRACE ("BFD_RELOC_386_TLS_DESC");
322 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
323
cbe950e9
L		 324 case BFD_RELOC_386_IRELATIVE:
325 TRACE ("BFD_RELOC_386_IRELATIVE");
326 return &elf_howto_table[R_386_IRELATIVE];
327
252b5132
RH		 328 case BFD_RELOC_VTABLE_INHERIT:
329 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 330 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 331
332 case BFD_RELOC_VTABLE_ENTRY:
333 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 334 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 335
336 default:
337 break;
338 }
339
340 TRACE ("Unknown");
341 return 0;
342}
343
157090f7
AM		 344static reloc_howto_type *
345elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
346 const char *r_name)
347{
348 unsigned int i;
349
350 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
351 if (elf_howto_table[i].name != NULL
352 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
353 return &elf_howto_table[i];
354
355 return NULL;
356}
357
142411ca
L		 358static reloc_howto_type *
359elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 360{
dc47f327
AM		 361 unsigned int indx;
362
363 if ((indx = r_type) >= R_386_standard
364 && ((indx = r_type - R_386_ext_offset) - R_386_standard
365 >= R_386_ext - R_386_standard)
13ae64f3 366 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9
L		 367 >= R_386_irelative - R_386_ext)
368 && ((indx = r_type - R_386_vt_offset) - R_386_irelative
369 >= R_386_vt - R_386_irelative))
252b5132 370 {
d003868e
AM		 371 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
372 abfd, (int) r_type);
55fd94b0 373 indx = R_386_NONE;
252b5132 374 }
142411ca
L		 375 BFD_ASSERT (elf_howto_table [indx].type == r_type);
376 return &elf_howto_table[indx];
377}
378
379static void
380elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
381 arelent *cache_ptr,
382 Elf_Internal_Rela *dst)
383{
384 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
385 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 386}
387
388/* Return whether a symbol name implies a local label. The UnixWare
389 2.1 cc generates temporary symbols that start with .X, so we
390 recognize them here. FIXME: do other SVR4 compilers also use .X?.
391 If so, we should move the .X recognition into
392 _bfd_elf_is_local_label_name. */
393
b34976b6 394static bfd_boolean
55fd94b0 395elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 396{
397 if (name[0] == '.' && name[1] == 'X')
b34976b6 398 return TRUE;
252b5132
RH		 399
400 return _bfd_elf_is_local_label_name (abfd, name);
401}
402\f
38701953 403/* Support for core dump NOTE sections. */
61adc1a4 404
b34976b6 405static bfd_boolean
55fd94b0 406elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 407{
408 int offset;
eea6121a 409 size_t size;
38701953 410
61adc1a4 411 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 412 {
61adc1a4
NC		 413 int pr_version = bfd_get_32 (abfd, note->descdata);
414
415 if (pr_version != 1)
416 return FALSE;
417
418 /* pr_cursig */
419 elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
420
421 /* pr_pid */
261b8d08 422 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 423
424 /* pr_reg */
425 offset = 28;
eea6121a 426 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 427 }
428 else
429 {
430 switch (note->descsz)
431 {
432 default:
433 return FALSE;
38701953 434
61adc1a4
NC		 435 case 144: /* Linux/i386 */
436 /* pr_cursig */
437 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 438
61adc1a4 439 /* pr_pid */
261b8d08 440 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 441
61adc1a4
NC		 442 /* pr_reg */
443 offset = 72;
eea6121a 444 size = 68;
38701953 445
61adc1a4
NC		 446 break;
447 }
38701953
AM		 448 }
449
450 /* Make a ".reg/999" section. */
451 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 452 size, note->descpos + offset);
38701953
AM		 453}
454
b34976b6 455static bfd_boolean
55fd94b0 456elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 457{
61adc1a4 458 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 459 {
61adc1a4
NC		 460 int pr_version = bfd_get_32 (abfd, note->descdata);
461
462 if (pr_version != 1)
b34976b6 463 return FALSE;
38701953 464
61adc1a4
NC		 465 elf_tdata (abfd)->core_program
466 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
467 elf_tdata (abfd)->core_command
468 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
469 }
470 else
471 {
472 switch (note->descsz)
473 {
474 default:
475 return FALSE;
476
477 case 124: /* Linux/i386 elf_prpsinfo. */
261b8d08
PA		 478 elf_tdata (abfd)->core_pid
479 = bfd_get_32 (abfd, note->descdata + 12);
61adc1a4
NC		 480 elf_tdata (abfd)->core_program
481 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
482 elf_tdata (abfd)->core_command
483 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
484 }
38701953
AM		 485 }
486
487 /* Note that for some reason, a spurious space is tacked
488 onto the end of the args in some (at least one anyway)
489 implementations, so strip it off if it exists. */
38701953
AM		 490 {
491 char *command = elf_tdata (abfd)->core_command;
492 int n = strlen (command);
493
494 if (0 < n && command[n - 1] == ' ')
495 command[n - 1] = '\0';
496 }
497
b34976b6 498 return TRUE;
38701953
AM		 499}
500\f
501/* Functions for the i386 ELF linker.
502
503 In order to gain some understanding of code in this file without
504 knowing all the intricate details of the linker, note the
505 following:
506
507 Functions named elf_i386_* are called by external routines, other
508 functions are only called locally. elf_i386_* functions appear
509 in this file more or less in the order in which they are called
510 from external routines. eg. elf_i386_check_relocs is called
511 early in the link process, elf_i386_finish_dynamic_sections is
512 one of the last functions. */
513
252b5132
RH		 514
515/* The name of the dynamic interpreter. This is put in the .interp
516 section. */
517
518#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
519
a23b6845
AM		 520/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
521 copying dynamic variables from a shared lib into an app's dynbss
522 section, and instead use a dynamic relocation to point into the
523 shared lib. */
524#define ELIMINATE_COPY_RELOCS 1
525
252b5132
RH		 526/* The size in bytes of an entry in the procedure linkage table. */
527
528#define PLT_ENTRY_SIZE 16
529
530/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 531 this. See the SVR4 ABI i386 supplement to see how this works.
532 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 533
eac338cf 534static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 535{
536 0xff, 0x35, /* pushl contents of address */
537 0, 0, 0, 0, /* replaced with address of .got + 4. */
538 0xff, 0x25, /* jmp indirect */
eac338cf 539 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 540};
541
542/* Subsequent entries in an absolute procedure linkage table look like
543 this. */
544
545static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
546{
547 0xff, 0x25, /* jmp indirect */
548 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
549 0x68, /* pushl immediate */
550 0, 0, 0, 0, /* replaced with offset into relocation table. */
551 0xe9, /* jmp relative */
552 0, 0, 0, 0 /* replaced with offset to start of .plt. */
553};
554
eac338cf
PB		 555/* The first entry in a PIC procedure linkage table look like this.
556 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 557
eac338cf 558static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 559{
560 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 561 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 562};
563
564/* Subsequent entries in a PIC procedure linkage table look like this. */
565
566static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
567{
568 0xff, 0xa3, /* jmp *offset(%ebx) */
569 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
570 0x68, /* pushl immediate */
571 0, 0, 0, 0, /* replaced with offset into relocation table. */
572 0xe9, /* jmp relative */
573 0, 0, 0, 0 /* replaced with offset to start of .plt. */
574};
575
eac338cf
PB		 576/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
577 for the PLTResolve stub and then for each PLT entry. */
578#define PLTRESOLVE_RELOCS_SHLIB 0
579#define PLTRESOLVE_RELOCS 2
580#define PLT_NON_JUMP_SLOT_RELOCS 2
581
252b5132
RH		 582/* i386 ELF linker hash entry. */
583
584struct elf_i386_link_hash_entry
585{
ebe50bae 586 struct elf_link_hash_entry elf;
252b5132 587
0c715baa 588 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 589 struct elf_dyn_relocs *dyn_relocs;
13ae64f3 590
37e55690
JJ		 591#define GOT_UNKNOWN 0
592#define GOT_NORMAL 1
593#define GOT_TLS_GD 2
594#define GOT_TLS_IE 4
595#define GOT_TLS_IE_POS 5
596#define GOT_TLS_IE_NEG 6
597#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO		 598#define GOT_TLS_GDESC 8
599#define GOT_TLS_GD_BOTH_P(type) \
600 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
601#define GOT_TLS_GD_P(type) \
602 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
603#define GOT_TLS_GDESC_P(type) \
604 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
605#define GOT_TLS_GD_ANY_P(type) \
606 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 607 unsigned char tls_type;
67a4f2b7
AO		 608
609 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
610 starting at the end of the jump table. */
611 bfd_vma tlsdesc_got;
13ae64f3
JJ		 612};
613
614#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
615
616struct elf_i386_obj_tdata
617{
618 struct elf_obj_tdata root;
619
620 /* tls_type for each local got entry. */
621 char *local_got_tls_type;
67a4f2b7
AO		 622
623 /* GOTPLT entries for TLS descriptors. */
624 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 625};
626
13ae64f3
JJ		 627#define elf_i386_tdata(abfd) \
628 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
629
630#define elf_i386_local_got_tls_type(abfd) \
631 (elf_i386_tdata (abfd)->local_got_tls_type)
632
67a4f2b7
AO		 633#define elf_i386_local_tlsdesc_gotent(abfd) \
634 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
635
0ffa91dd
NC		 636#define is_i386_elf(bfd) \
637 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
638 && elf_tdata (bfd) != NULL \
4dfe6ac6 639 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 640
b34976b6 641static bfd_boolean
55fd94b0 642elf_i386_mkobject (bfd *abfd)
13ae64f3 643{
0ffa91dd 644 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 645 I386_ELF_DATA);
13ae64f3 646}
cedb70c5 647
252b5132
RH		 648/* i386 ELF linker hash table. */
649
650struct elf_i386_link_hash_table
651{
ebe50bae 652 struct elf_link_hash_table elf;
252b5132 653
6725bdbf 654 /* Short-cuts to get to dynamic linker sections. */
6725bdbf
AM		 655 asection *sdynbss;
656 asection *srelbss;
9635fe29 657
4dfe6ac6
NC		 658 union
659 {
13ae64f3
JJ		 660 bfd_signed_vma refcount;
661 bfd_vma offset;
662 } tls_ldm_got;
663
67a4f2b7
AO		 664 /* The amount of space used by the reserved portion of the sgotplt
665 section, plus whatever space is used by the jump slots. */
666 bfd_vma sgotplt_jump_table_size;
667
87d72d41
AM		 668 /* Small local sym cache. */
669 struct sym_cache sym_cache;
9f03412a
AO		 670
671 /* _TLS_MODULE_BASE_ symbol. */
672 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 673
674 /* Used by local STT_GNU_IFUNC symbols. */
675 htab_t loc_hash_table;
4dfe6ac6
NC		 676 void * loc_hash_memory;
677
678 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
679 asection *srelplt2;
680
681 /* True if the target system is VxWorks. */
682 int is_vxworks;
683
684 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
685 bfd_vma next_tls_desc_index;
686
687 /* Value used to fill the last word of the first plt entry. */
688 bfd_byte plt0_pad_byte;
6725bdbf 689};
252b5132
RH		 690
691/* Get the i386 ELF linker hash table from a link_info structure. */
692
693#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 694 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
695 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 696
67a4f2b7 697#define elf_i386_compute_jump_table_size(htab) \
5ae0bfb6 698 ((htab)->next_tls_desc_index * 4)
67a4f2b7 699
252b5132
RH		 700/* Create an entry in an i386 ELF linker hash table. */
701
702static struct bfd_hash_entry *
eb4ff4d6
L		 703elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
704 struct bfd_hash_table *table,
705 const char *string)
252b5132 706{
252b5132
RH		 707 /* Allocate the structure if it has not already been allocated by a
708 subclass. */
ebe50bae
AM		 709 if (entry == NULL)
710 {
a50b1753
NC		 711 entry = (struct bfd_hash_entry *)
712 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 713 if (entry == NULL)
714 return entry;
715 }
252b5132
RH		 716
717 /* Call the allocation method of the superclass. */
ebe50bae
AM		 718 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
719 if (entry != NULL)
252b5132 720 {
ebe50bae
AM		 721 struct elf_i386_link_hash_entry *eh;
722
723 eh = (struct elf_i386_link_hash_entry *) entry;
724 eh->dyn_relocs = NULL;
13ae64f3 725 eh->tls_type = GOT_UNKNOWN;
67a4f2b7 726 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 727 }
728
ebe50bae 729 return entry;
252b5132
RH		 730}
731
c25bc9fc
L		 732/* Compute a hash of a local hash entry. We use elf_link_hash_entry
733 for local symbol so that we can handle local STT_GNU_IFUNC symbols
734 as global symbol. We reuse indx and dynstr_index for local symbol
735 hash since they aren't used by global symbols in this backend. */
736
737static hashval_t
738elf_i386_local_htab_hash (const void *ptr)
739{
740 struct elf_link_hash_entry *h
741 = (struct elf_link_hash_entry *) ptr;
d2149d72 742 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 743}
744
745/* Compare local hash entries. */
746
747static int
748elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
749{
750 struct elf_link_hash_entry *h1
751 = (struct elf_link_hash_entry *) ptr1;
752 struct elf_link_hash_entry *h2
753 = (struct elf_link_hash_entry *) ptr2;
754
755 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
756}
757
758/* Find and/or create a hash entry for local symbol. */
759
760static struct elf_link_hash_entry *
761elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
762 bfd *abfd, const Elf_Internal_Rela *rel,
763 bfd_boolean create)
764{
765 struct elf_i386_link_hash_entry e, *ret;
766 asection *sec = abfd->sections;
d2149d72
L		 767 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
768 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 769 void **slot;
770
771 e.elf.indx = sec->id;
772 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
773 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
774 create ? INSERT : NO_INSERT);
775
776 if (!slot)
777 return NULL;
778
779 if (*slot)
780 {
781 ret = (struct elf_i386_link_hash_entry *) *slot;
782 return &ret->elf;
783 }
784
785 ret = (struct elf_i386_link_hash_entry *)
786 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
787 sizeof (struct elf_i386_link_hash_entry));
788 if (ret)
789 {
790 memset (ret, 0, sizeof (*ret));
791 ret->elf.indx = sec->id;
792 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
793 ret->elf.dynindx = -1;
c25bc9fc
L		 794 *slot = ret;
795 }
796 return &ret->elf;
797}
798
252b5132
RH		 799/* Create an i386 ELF linker hash table. */
800
801static struct bfd_link_hash_table *
55fd94b0 802elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 803{
804 struct elf_i386_link_hash_table *ret;
dc810e39 805 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 806
a50b1753 807 ret = (struct elf_i386_link_hash_table *) bfd_malloc (amt);
ebe50bae 808 if (ret == NULL)
252b5132
RH		 809 return NULL;
810
eb4ff4d6
L		 811 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
812 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 813 sizeof (struct elf_i386_link_hash_entry),
814 I386_ELF_DATA))
252b5132 815 {
e2d34d7d 816 free (ret);
252b5132
RH		 817 return NULL;
818 }
819
6725bdbf
AM		 820 ret->sdynbss = NULL;
821 ret->srelbss = NULL;
7a624474 822 ret->tls_ldm_got.refcount = 0;
5ae0bfb6 823 ret->next_tls_desc_index = 0;
67a4f2b7 824 ret->sgotplt_jump_table_size = 0;
87d72d41 825 ret->sym_cache.abfd = NULL;
eac338cf
PB		 826 ret->is_vxworks = 0;
827 ret->srelplt2 = NULL;
eac338cf 828 ret->plt0_pad_byte = 0;
9f03412a 829 ret->tls_module_base = NULL;
6725bdbf 830
c25bc9fc
L		 831 ret->loc_hash_table = htab_try_create (1024,
832 elf_i386_local_htab_hash,
833 elf_i386_local_htab_eq,
834 NULL);
835 ret->loc_hash_memory = objalloc_create ();
836 if (!ret->loc_hash_table || !ret->loc_hash_memory)
837 {
838 free (ret);
839 return NULL;
840 }
841
ebe50bae 842 return &ret->elf.root;
252b5132
RH		 843}
844
c25bc9fc
L		 845/* Destroy an i386 ELF linker hash table. */
846
847static void
848elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash)
849{
850 struct elf_i386_link_hash_table *htab
851 = (struct elf_i386_link_hash_table *) hash;
852
853 if (htab->loc_hash_table)
854 htab_delete (htab->loc_hash_table);
855 if (htab->loc_hash_memory)
856 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
857 _bfd_generic_link_hash_table_free (hash);
858}
859
6725bdbf
AM		 860/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
861 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
862 hash table. */
863
b34976b6 864static bfd_boolean
55fd94b0 865elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 866{
867 struct elf_i386_link_hash_table *htab;
868
6725bdbf 869 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 870 return FALSE;
6725bdbf 871
6de2ae4a 872 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 873 if (htab == NULL)
874 return FALSE;
875
6725bdbf
AM		 876 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
877 if (!info->shared)
878 htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
879
6de2ae4a 880 if (!htab->sdynbss
6725bdbf
AM		 881 || (!info->shared && !htab->srelbss))
882 abort ();
883
711de32c 884 if (htab->is_vxworks
6de2ae4a
L		 885 && !elf_vxworks_create_dynamic_sections (dynobj, info,
886 &htab->srelplt2))
711de32c 887 return FALSE;
eac338cf 888
b34976b6 889 return TRUE;
6725bdbf
AM		 890}
891
ebe50bae
AM		 892/* Copy the extra info we tack onto an elf_link_hash_entry. */
893
51b64d56 894static void
fcfa13d2 895elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 896 struct elf_link_hash_entry *dir,
897 struct elf_link_hash_entry *ind)
ebe50bae
AM		 898{
899 struct elf_i386_link_hash_entry *edir, *eind;
900
901 edir = (struct elf_i386_link_hash_entry *) dir;
902 eind = (struct elf_i386_link_hash_entry *) ind;
903
bbd7ec4a 904 if (eind->dyn_relocs != NULL)
ebe50bae 905 {
bbd7ec4a
AM		 906 if (edir->dyn_relocs != NULL)
907 {
e03a8ed8
L		 908 struct elf_dyn_relocs **pp;
909 struct elf_dyn_relocs *p;
bbd7ec4a 910
fcfa13d2 911 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 912 list. Merge any entries against the same section. */
913 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
914 {
e03a8ed8 915 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 916
917 for (q = edir->dyn_relocs; q != NULL; q = q->next)
918 if (q->sec == p->sec)
919 {
920 q->pc_count += p->pc_count;
921 q->count += p->count;
922 *pp = p->next;
923 break;
924 }
925 if (q == NULL)
926 pp = &p->next;
927 }
928 *pp = edir->dyn_relocs;
929 }
930
ebe50bae
AM		 931 edir->dyn_relocs = eind->dyn_relocs;
932 eind->dyn_relocs = NULL;
933 }
ebe50bae 934
cd67d266
JJ		 935 if (ind->root.type == bfd_link_hash_indirect
936 && dir->got.refcount <= 0)
937 {
938 edir->tls_type = eind->tls_type;
939 eind->tls_type = GOT_UNKNOWN;
940 }
81848ca0
AM		 941
942 if (ELIMINATE_COPY_RELOCS
943 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 944 && dir->dynamic_adjusted)
945 {
946 /* If called to transfer flags for a weakdef during processing
947 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
948 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
949 dir->ref_dynamic |= ind->ref_dynamic;
950 dir->ref_regular |= ind->ref_regular;
951 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
952 dir->needs_plt |= ind->needs_plt;
953 dir->pointer_equality_needed |= ind->pointer_equality_needed;
954 }
81848ca0 955 else
fcfa13d2 956 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
ebe50bae
AM		 957}
958
142411ca
L		 959typedef union
960 {
961 unsigned char c[2];
962 uint16_t i;
963 }
964i386_opcode16;
965
966/* Return TRUE if the TLS access code sequence support transition
967 from R_TYPE. */
968
969static bfd_boolean
970elf_i386_check_tls_transition (bfd *abfd, asection *sec,
971 bfd_byte *contents,
972 Elf_Internal_Shdr *symtab_hdr,
973 struct elf_link_hash_entry **sym_hashes,
974 unsigned int r_type,
975 const Elf_Internal_Rela *rel,
976 const Elf_Internal_Rela *relend)
13ae64f3 977{
142411ca
L		 978 unsigned int val, type;
979 unsigned long r_symndx;
980 struct elf_link_hash_entry *h;
981 bfd_vma offset;
982
983 /* Get the section contents. */
984 if (contents == NULL)
985 {
986 if (elf_section_data (sec)->this_hdr.contents != NULL)
987 contents = elf_section_data (sec)->this_hdr.contents;
988 else
989 {
990 /* FIXME: How to better handle error condition? */
991 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
992 return FALSE;
13ae64f3 993
142411ca
L		 994 /* Cache the section contents for elf_link_input_bfd. */
995 elf_section_data (sec)->this_hdr.contents = contents;
996 }
997 }
998
999 offset = rel->r_offset;
13ae64f3 1000 switch (r_type)
142411ca
L		 1001 {
1002 case R_386_TLS_GD:
1003 case R_386_TLS_LDM:
1004 if (offset < 2 || (rel + 1) >= relend)
1005 return FALSE;
1006
1007 type = bfd_get_8 (abfd, contents + offset - 2);
1008 if (r_type == R_386_TLS_GD)
1009 {
09e8c3bf 1010 /* Check transition from GD access model. Only
142411ca
L		 1011 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1012 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1013 can transit to different access model. */
1014 if ((offset + 10) > sec->size ||
1015 (type != 0x8d && type != 0x04))
1016 return FALSE;
1017
1018 val = bfd_get_8 (abfd, contents + offset - 1);
1019 if (type == 0x04)
1020 {
1021 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1022 if (offset < 3)
1023 return FALSE;
1024
1025 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1026 return FALSE;
1027
1028 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1029 return FALSE;
1030 }
1031 else
1032 {
1033 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1034 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1035 return FALSE;
1036
1037 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1038 return FALSE;
1039 }
1040 }
1041 else
1042 {
1043 /* Check transition from LD access model. Only
1044 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1045 can transit to different access model. */
1046 if (type != 0x8d || (offset + 9) > sec->size)
1047 return FALSE;
1048
1049 val = bfd_get_8 (abfd, contents + offset - 1);
1050 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1051 return FALSE;
1052 }
1053
1054 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1055 return FALSE;
1056
1057 r_symndx = ELF32_R_SYM (rel[1].r_info);
1058 if (r_symndx < symtab_hdr->sh_info)
1059 return FALSE;
1060
1061 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b
L		 1062 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1063 may be versioned. */
142411ca
L		 1064 return (h != NULL
1065 && h->root.root.string != NULL
1066 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1067 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
c4fb387b
L		 1068 && (strncmp (h->root.root.string, "___tls_get_addr",
1069 15) == 0));
142411ca
L		 1070
1071 case R_386_TLS_IE:
1072 /* Check transition from IE access model:
1073 movl foo@indntpoff(%rip), %eax
1074 movl foo@indntpoff(%rip), %reg
1075 addl foo@indntpoff(%rip), %reg
1076 */
1077
1078 if (offset < 1 || (offset + 4) > sec->size)
1079 return FALSE;
1080
1081 /* Check "movl foo@tpoff(%rip), %eax" first. */
1082 val = bfd_get_8 (abfd, contents + offset - 1);
1083 if (val == 0xa1)
1084 return TRUE;
1085
1086 if (offset < 2)
1087 return FALSE;
1088
1089 /* Check movl|addl foo@tpoff(%rip), %reg. */
1090 type = bfd_get_8 (abfd, contents + offset - 2);
1091 return ((type == 0x8b || type == 0x03)
1092 && (val & 0xc7) == 0x05);
1093
1094 case R_386_TLS_GOTIE:
1095 case R_386_TLS_IE_32:
1096 /* Check transition from {IE_32,GOTIE} access model:
1097 subl foo@{tpoff,gontoff}(%reg1), %reg2
1098 movl foo@{tpoff,gontoff}(%reg1), %reg2
1099 addl foo@{tpoff,gontoff}(%reg1), %reg2
1100 */
1101
1102 if (offset < 2 || (offset + 4) > sec->size)
1103 return FALSE;
1104
1105 val = bfd_get_8 (abfd, contents + offset - 1);
1106 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1107 return FALSE;
1108
1109 type = bfd_get_8 (abfd, contents + offset - 2);
1110 return type == 0x8b || type == 0x2b || type == 0x03;
1111
1112 case R_386_TLS_GOTDESC:
1113 /* Check transition from GDesc access model:
1114 leal x@tlsdesc(%ebx), %eax
1115
1116 Make sure it's a leal adding ebx to a 32-bit offset
1117 into any register, although it's probably almost always
1118 going to be eax. */
1119
1120 if (offset < 2 || (offset + 4) > sec->size)
1121 return FALSE;
1122
1123 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1124 return FALSE;
1125
1126 val = bfd_get_8 (abfd, contents + offset - 1);
1127 return (val & 0xc7) == 0x83;
1128
1129 case R_386_TLS_DESC_CALL:
1130 /* Check transition from GDesc access model:
1131 call *x@tlsdesc(%rax)
1132 */
1133 if (offset + 2 <= sec->size)
1134 {
1135 /* Make sure that it's a call *x@tlsdesc(%rax). */
1136 static i386_opcode16 call = { { 0xff, 0x10 } };
1137 return bfd_get_16 (abfd, contents + offset) == call.i;
1138 }
1139
1140 return FALSE;
1141
1142 default:
1143 abort ();
1144 }
1145}
1146
1147/* Return TRUE if the TLS access transition is OK or no transition
1148 will be performed. Update R_TYPE if there is a transition. */
1149
1150static bfd_boolean
1151elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1152 asection *sec, bfd_byte *contents,
1153 Elf_Internal_Shdr *symtab_hdr,
1154 struct elf_link_hash_entry **sym_hashes,
1155 unsigned int *r_type, int tls_type,
1156 const Elf_Internal_Rela *rel,
1157 const Elf_Internal_Rela *relend,
4c544807
L		 1158 struct elf_link_hash_entry *h,
1159 unsigned long r_symndx)
142411ca
L		 1160{
1161 unsigned int from_type = *r_type;
1162 unsigned int to_type = from_type;
1163 bfd_boolean check = TRUE;
1164
bb1cb422
L		 1165 /* Skip TLS transition for functions. */
1166 if (h != NULL
1167 && (h->type == STT_FUNC
1168 || h->type == STT_GNU_IFUNC))
1169 return TRUE;
1170
142411ca 1171 switch (from_type)
13ae64f3
JJ		 1172 {
1173 case R_386_TLS_GD:
67a4f2b7
AO		 1174 case R_386_TLS_GOTDESC:
1175 case R_386_TLS_DESC_CALL:
13ae64f3 1176 case R_386_TLS_IE_32:
37e55690
JJ		 1177 case R_386_TLS_IE:
1178 case R_386_TLS_GOTIE:
1d85728f 1179 if (info->executable)
142411ca
L		 1180 {
1181 if (h == NULL)
1182 to_type = R_386_TLS_LE_32;
1183 else if (from_type != R_386_TLS_IE
1184 && from_type != R_386_TLS_GOTIE)
1185 to_type = R_386_TLS_IE_32;
1186 }
1187
1188 /* When we are called from elf_i386_relocate_section, CONTENTS
1189 isn't NULL and there may be additional transitions based on
1190 TLS_TYPE. */
1191 if (contents != NULL)
1192 {
1193 unsigned int new_to_type = to_type;
1194
1d85728f 1195 if (info->executable
142411ca
L		 1196 && h != NULL
1197 && h->dynindx == -1
1198 && (tls_type & GOT_TLS_IE))
1199 new_to_type = R_386_TLS_LE_32;
1200
1201 if (to_type == R_386_TLS_GD
1202 || to_type == R_386_TLS_GOTDESC
1203 || to_type == R_386_TLS_DESC_CALL)
1204 {
1205 if (tls_type == GOT_TLS_IE_POS)
1206 new_to_type = R_386_TLS_GOTIE;
1207 else if (tls_type & GOT_TLS_IE)
1208 new_to_type = R_386_TLS_IE_32;
1209 }
1210
1211 /* We checked the transition before when we were called from
1212 elf_i386_check_relocs. We only want to check the new
1213 transition which hasn't been checked before. */
1214 check = new_to_type != to_type && from_type == to_type;
1215 to_type = new_to_type;
1216 }
1217
1218 break;
1219
13ae64f3 1220 case R_386_TLS_LDM:
1d85728f 1221 if (info->executable)
142411ca
L		 1222 to_type = R_386_TLS_LE_32;
1223 break;
1224
1225 default:
1226 return TRUE;
1227 }
1228
1229 /* Return TRUE if there is no transition. */
1230 if (from_type == to_type)
1231 return TRUE;
1232
1233 /* Check if the transition can be performed. */
1234 if (check
1235 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1236 symtab_hdr, sym_hashes,
1237 from_type, rel, relend))
1238 {
2f629d23 1239 reloc_howto_type *from, *to;
4c544807 1240 const char *name;
142411ca
L		 1241
1242 from = elf_i386_rtype_to_howto (abfd, from_type);
1243 to = elf_i386_rtype_to_howto (abfd, to_type);
1244
4c544807
L		 1245 if (h)
1246 name = h->root.root.string;
1247 else
1248 {
4c544807 1249 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1250
4c544807 1251 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1252 if (htab == NULL)
1253 name = "*unknown*";
1254 else
1255 {
1256 Elf_Internal_Sym *isym;
1257
1258 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1259 abfd, r_symndx);
1260 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1261 }
4c544807
L		 1262 }
1263
142411ca
L		 1264 (*_bfd_error_handler)
1265 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1266 "in section `%A' failed"),
4c544807 1267 abfd, sec, from->name, to->name, name,
142411ca
L		 1268 (unsigned long) rel->r_offset);
1269 bfd_set_error (bfd_error_bad_value);
1270 return FALSE;
13ae64f3
JJ		 1271 }
1272
142411ca
L		 1273 *r_type = to_type;
1274 return TRUE;
13ae64f3
JJ		 1275}
1276
252b5132 1277/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1278 calculate needed space in the global offset table, procedure linkage
1279 table, and dynamic reloc sections. */
252b5132 1280
b34976b6 1281static bfd_boolean
55fd94b0
AM		 1282elf_i386_check_relocs (bfd *abfd,
1283 struct bfd_link_info *info,
1284 asection *sec,
1285 const Elf_Internal_Rela *relocs)
252b5132 1286{
6725bdbf 1287 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1288 Elf_Internal_Shdr *symtab_hdr;
1289 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1290 const Elf_Internal_Rela *rel;
1291 const Elf_Internal_Rela *rel_end;
252b5132
RH		 1292 asection *sreloc;
1293
1049f94e 1294 if (info->relocatable)
b34976b6 1295 return TRUE;
252b5132 1296
0ffa91dd
NC		 1297 BFD_ASSERT (is_i386_elf (abfd));
1298
6725bdbf 1299 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1300 if (htab == NULL)
1301 return FALSE;
1302
0ffa91dd 1303 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1304 sym_hashes = elf_sym_hashes (abfd);
252b5132 1305
252b5132
RH		 1306 sreloc = NULL;
1307
1308 rel_end = relocs + sec->reloc_count;
1309 for (rel = relocs; rel < rel_end; rel++)
1310 {
13ae64f3 1311 unsigned int r_type;
252b5132
RH		 1312 unsigned long r_symndx;
1313 struct elf_link_hash_entry *h;
4c544807
L		 1314 Elf_Internal_Sym *isym;
1315 const char *name;
252b5132
RH		 1316
1317 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1318 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1319
d9bc7a44 1320 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1321 {
d003868e
AM		 1322 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1323 abfd,
8f615d07 1324 r_symndx);
b34976b6 1325 return FALSE;
f5f31454
L		 1326 }
1327
252b5132 1328 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1329 {
1330 /* A local symbol. */
c2e61a4e
L		 1331 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1332 abfd, r_symndx);
1333 if (isym == NULL)
1334 return FALSE;
c25bc9fc
L		 1335
1336 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1337 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1338 {
9fff0c39 1339 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1340 if (h == NULL)
c2e61a4e 1341 return FALSE;
6bbec505 1342
c25bc9fc
L		 1343 /* Fake a STT_GNU_IFUNC symbol. */
1344 h->type = STT_GNU_IFUNC;
1345 h->def_regular = 1;
1346 h->ref_regular = 1;
1347 h->forced_local = 1;
1348 h->root.type = bfd_link_hash_defined;
1349 }
1350 else
1351 h = NULL;
1352 }
252b5132 1353 else
71cb9464 1354 {
4c544807 1355 isym = NULL;
71cb9464
L		 1356 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1357 while (h->root.type == bfd_link_hash_indirect
1358 || h->root.type == bfd_link_hash_warning)
1359 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1360 }
cbe950e9 1361
c25bc9fc
L		 1362 if (h != NULL)
1363 {
cbe950e9
L		 1364 /* Create the ifunc sections for static executables. If we
1365 never see an indirect function symbol nor we are building
1366 a static executable, those sections will be empty and
1367 won't appear in output. */
1368 switch (r_type)
1369 {
1370 default:
1371 break;
1372
1373 case R_386_32:
1374 case R_386_PC32:
1375 case R_386_PLT32:
1376 case R_386_GOT32:
1377 case R_386_GOTOFF:
6de2ae4a 1378 if (!_bfd_elf_create_ifunc_sections (abfd, info))
c2e61a4e 1379 return FALSE;
cbe950e9
L		 1380 break;
1381 }
1382
1383 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
1384 it here if it is defined in a non-shared object. */
1385 if (h->type == STT_GNU_IFUNC
1386 && h->def_regular)
1387 {
1388 /* It is referenced by a non-shared object. */
1389 h->ref_regular = 1;
7ae26bc1 1390 h->needs_plt = 1;
6bbec505 1391
cbe950e9
L		 1392 /* STT_GNU_IFUNC symbol must go through PLT. */
1393 h->plt.refcount += 1;
1394
1395 /* STT_GNU_IFUNC needs dynamic sections. */
1396 if (htab->elf.dynobj == NULL)
1397 htab->elf.dynobj = abfd;
1398
1399 switch (r_type)
1400 {
048cbda4 1401 default:
4c544807
L		 1402 if (h->root.root.string)
1403 name = h->root.root.string;
1404 else
1405 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1406 NULL);
048cbda4
L		 1407 (*_bfd_error_handler)
1408 (_("%B: relocation %s against STT_GNU_IFUNC "
1409 "symbol `%s' isn't handled by %s"), abfd,
1410 elf_howto_table[r_type].name,
4c544807 1411 name, __FUNCTION__);
048cbda4 1412 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1413 return FALSE;
cbe950e9
L		 1414
1415 case R_386_32:
710ab287
L		 1416 h->non_got_ref = 1;
1417 h->pointer_equality_needed = 1;
1418 if (info->shared)
1419 {
710ab287
L		 1420 /* We must copy these reloc types into the
1421 output file. Create a reloc section in
1422 dynobj and make room for this reloc. */
e03a8ed8
L		 1423 sreloc = _bfd_elf_create_ifunc_dyn_reloc
1424 (abfd, info, sec, sreloc,
1425 &((struct elf_i386_link_hash_entry *) h)->dyn_relocs);
710ab287 1426 if (sreloc == NULL)
c2e61a4e 1427 return FALSE;
710ab287
L		 1428 }
1429 break;
1430
cbe950e9
L		 1431 case R_386_PC32:
1432 h->non_got_ref = 1;
cbe950e9
L		 1433 break;
1434
1435 case R_386_PLT32:
1436 break;
1437
1438 case R_386_GOT32:
1439 case R_386_GOTOFF:
7afd84dc 1440 h->got.refcount += 1;
6de2ae4a
L		 1441 if (htab->elf.sgot == NULL
1442 && !_bfd_elf_create_got_section (htab->elf.dynobj,
cbe950e9 1443 info))
c2e61a4e 1444 return FALSE;
cbe950e9
L		 1445 break;
1446 }
1447
1448 continue;
1449 }
71cb9464 1450 }
252b5132 1451
142411ca
L		 1452 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1453 symtab_hdr, sym_hashes,
1454 &r_type, GOT_UNKNOWN,
4c544807 1455 rel, rel_end, h, r_symndx))
c2e61a4e 1456 return FALSE;
13ae64f3
JJ		 1457
1458 switch (r_type)
252b5132 1459 {
37e55690
JJ		 1460 case R_386_TLS_LDM:
1461 htab->tls_ldm_got.refcount += 1;
1462 goto create_got;
1463
1464 case R_386_PLT32:
1465 /* This symbol requires a procedure linkage table entry. We
1466 actually build the entry in adjust_dynamic_symbol,
1467 because this might be a case of linking PIC code which is
1468 never referenced by a dynamic object, in which case we
1469 don't need to generate a procedure linkage table entry
1470 after all. */
1471
1472 /* If this is a local symbol, we resolve it directly without
1473 creating a procedure linkage table entry. */
1474 if (h == NULL)
1475 continue;
1476
f5385ebf 1477 h->needs_plt = 1;
37e55690
JJ		 1478 h->plt.refcount += 1;
1479 break;
1480
13ae64f3 1481 case R_386_TLS_IE_32:
37e55690
JJ		 1482 case R_386_TLS_IE:
1483 case R_386_TLS_GOTIE:
1d85728f 1484 if (!info->executable)
13ae64f3 1485 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1486 /* Fall through */
1487
252b5132 1488 case R_386_GOT32:
13ae64f3 1489 case R_386_TLS_GD:
67a4f2b7
AO		 1490 case R_386_TLS_GOTDESC:
1491 case R_386_TLS_DESC_CALL:
252b5132 1492 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1493 {
1494 int tls_type, old_tls_type;
1495
1496 switch (r_type)
1497 {
1498 default:
1499 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1500 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1501 case R_386_TLS_GOTDESC:
1502 case R_386_TLS_DESC_CALL:
1503 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1504 case R_386_TLS_IE_32:
1505 if (ELF32_R_TYPE (rel->r_info) == r_type)
1506 tls_type = GOT_TLS_IE_NEG;
1507 else
ebcfb3c0
JJ		 1508 /* If this is a GD->IE transition, we may use either of
1509 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1510 tls_type = GOT_TLS_IE;
1511 break;
1512 case R_386_TLS_IE:
1513 case R_386_TLS_GOTIE:
1514 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1515 }
1516
1517 if (h != NULL)
1518 {
1519 h->got.refcount += 1;
1520 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1521 }
1522 else
1523 {
1524 bfd_signed_vma *local_got_refcounts;
1525
1526 /* This is a global offset table entry for a local symbol. */
1527 local_got_refcounts = elf_local_got_refcounts (abfd);
1528 if (local_got_refcounts == NULL)
1529 {
1530 bfd_size_type size;
1531
1532 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1533 size *= (sizeof (bfd_signed_vma)
1534 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1535 local_got_refcounts = (bfd_signed_vma *)
1536 bfd_zalloc (abfd, size);
13ae64f3 1537 if (local_got_refcounts == NULL)
c2e61a4e 1538 return FALSE;
13ae64f3 1539 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1540 elf_i386_local_tlsdesc_gotent (abfd)
1541 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1542 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1543 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1544 }
1545 local_got_refcounts[r_symndx] += 1;
1546 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1547 }
1548
37e55690
JJ		 1549 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1550 tls_type |= old_tls_type;
13ae64f3
JJ		 1551 /* If a TLS symbol is accessed using IE at least once,
1552 there is no point to use dynamic model for it. */
ebcfb3c0 1553 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1554 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1555 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1556 {
67a4f2b7 1557 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1558 tls_type = old_tls_type;
67a4f2b7
AO		 1559 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1560 && GOT_TLS_GD_ANY_P (tls_type))
1561 tls_type |= old_tls_type;
13ae64f3
JJ		 1562 else
1563 {
09a24cbf 1564 if (h)
4c544807
L		 1565 name = h->root.root.string;
1566 else
1567 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1568 NULL);
13ae64f3 1569 (*_bfd_error_handler)
d003868e 1570 (_("%B: `%s' accessed both as normal and "
55fd94b0 1571 "thread local symbol"),
4c544807 1572 abfd, name);
c2e61a4e 1573 return FALSE;
13ae64f3
JJ		 1574 }
1575 }
1576
1577 if (old_tls_type != tls_type)
1578 {
1579 if (h != NULL)
1580 elf_i386_hash_entry (h)->tls_type = tls_type;
1581 else
1582 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1583 }
1584 }
0ac8d2ca
AM		 1585 /* Fall through */
1586
1587 case R_386_GOTOFF:
1588 case R_386_GOTPC:
13ae64f3 1589 create_got:
6de2ae4a 1590 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 1591 {
1592 if (htab->elf.dynobj == NULL)
1593 htab->elf.dynobj = abfd;
6de2ae4a 1594 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1595 return FALSE;
0ac8d2ca 1596 }
37e55690
JJ		 1597 if (r_type != R_386_TLS_IE)
1598 break;
1599 /* Fall through */
252b5132 1600
37e55690
JJ		 1601 case R_386_TLS_LE_32:
1602 case R_386_TLS_LE:
1d85728f 1603 if (info->executable)
37e55690 1604 break;
bffbf940 1605 info->flags |= DF_STATIC_TLS;
b34976b6 1606 /* Fall through */
252b5132
RH		 1607
1608 case R_386_32:
1609 case R_386_PC32:
710ab287 1610 if (h != NULL && info->executable)
6725bdbf 1611 {
12d0ee4a 1612 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1613 need a copy reloc. We can't check reliably at this
1614 stage whether the section is read-only, as input
1615 sections have not yet been mapped to output sections.
1616 Tentatively set the flag for now, and correct in
1617 adjust_dynamic_symbol. */
f5385ebf 1618 h->non_got_ref = 1;
12d0ee4a
AM		 1619
1620 /* We may need a .plt entry if the function this reloc
1621 refers to is in a shared lib. */
51b64d56 1622 h->plt.refcount += 1;
c6585bbb 1623 if (r_type != R_386_PC32)
f5385ebf 1624 h->pointer_equality_needed = 1;
6725bdbf 1625 }
7843f00e 1626
252b5132 1627 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1628 against a global symbol, or a non PC relative reloc
1629 against a local symbol, then we need to copy the reloc
1630 into the shared library. However, if we are linking with
1631 -Bsymbolic, we do not need to copy a reloc against a
1632 global symbol which is defined in an object we are
1633 including in the link (i.e., DEF_REGULAR is set). At
1634 this point we have not seen all the input files, so it is
1635 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1636 later (it is never cleared). In case of a weak definition,
1637 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1638 a shared library. We account for that possibility below by
1f655a09
L		 1639 storing information in the relocs_copied field of the hash
1640 table entry. A similar situation occurs when creating
1641 shared libraries and symbol visibility changes render the
12d0ee4a 1642 symbol local.
56882138 1643
12d0ee4a
AM		 1644 If on the other hand, we are creating an executable, we
1645 may need to keep relocations for symbols satisfied by a
1646 dynamic library if we manage to avoid copy relocs for the
1647 symbol. */
1648 if ((info->shared
1649 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1650 && (r_type != R_386_PC32
12d0ee4a 1651 || (h != NULL
55255dae 1652 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1653 || h->root.type == bfd_link_hash_defweak
f5385ebf 1654 || !h->def_regular))))
a23b6845
AM		 1655 || (ELIMINATE_COPY_RELOCS
1656 && !info->shared
12d0ee4a
AM		 1657 && (sec->flags & SEC_ALLOC) != 0
1658 && h != NULL
12d0ee4a 1659 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1660 || !h->def_regular)))
252b5132 1661 {
e03a8ed8
L		 1662 struct elf_dyn_relocs *p;
1663 struct elf_dyn_relocs **head;
ec338859 1664
12d0ee4a
AM		 1665 /* We must copy these reloc types into the output file.
1666 Create a reloc section in dynobj and make room for
1667 this reloc. */
252b5132
RH		 1668 if (sreloc == NULL)
1669 {
0ac8d2ca
AM		 1670 if (htab->elf.dynobj == NULL)
1671 htab->elf.dynobj = abfd;
1672
83bac4b0
NC		 1673 sreloc = _bfd_elf_make_dynamic_reloc_section
1674 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1675
252b5132 1676 if (sreloc == NULL)
c2e61a4e 1677 return FALSE;
252b5132
RH		 1678 }
1679
0c715baa
AM		 1680 /* If this is a global symbol, we count the number of
1681 relocations we need for this symbol. */
1682 if (h != NULL)
252b5132 1683 {
ec338859 1684 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
0c715baa
AM		 1685 }
1686 else
1687 {
ec338859
AM		 1688 /* Track dynamic relocs needed for local syms too.
1689 We really need local syms available to do this
1690 easily. Oh well. */
87d72d41 1691 void **vpp;
ec338859 1692 asection *s;
87d72d41
AM		 1693
1694 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1695 abfd, r_symndx);
1696 if (isym == NULL)
1697 return FALSE;
1698
1699 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1700 if (s == NULL)
87d72d41 1701 s = sec;
ec338859 1702
e81d3500 1703 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1704 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1705 }
1706
1707 p = *head;
1708 if (p == NULL || p->sec != sec)
1709 {
1710 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1711 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1712 amt);
ec338859 1713 if (p == NULL)
c2e61a4e 1714 return FALSE;
ec338859
AM		 1715 p->next = *head;
1716 *head = p;
1717 p->sec = sec;
1718 p->count = 0;
1719 p->pc_count = 0;
252b5132 1720 }
ec338859
AM		 1721
1722 p->count += 1;
13ae64f3 1723 if (r_type == R_386_PC32)
ec338859 1724 p->pc_count += 1;
252b5132 1725 }
252b5132
RH		 1726 break;
1727
1728 /* This relocation describes the C++ object vtable hierarchy.
1729 Reconstruct it for later use during GC. */
1730 case R_386_GNU_VTINHERIT:
d17e0c6e 1731 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1732 return FALSE;
252b5132
RH		 1733 break;
1734
1735 /* This relocation describes which C++ vtable entries are actually
1736 used. Record for later use during GC. */
1737 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1738 BFD_ASSERT (h != NULL);
1739 if (h != NULL
1740 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c2e61a4e 1741 return FALSE;
252b5132
RH		 1742 break;
1743
1744 default:
1745 break;
1746 }
1747 }
1748
b34976b6 1749 return TRUE;
252b5132
RH		 1750}
1751
1752/* Return the section that should be marked against GC for a given
1753 relocation. */
1754
1755static asection *
55fd94b0 1756elf_i386_gc_mark_hook (asection *sec,
07adf181 1757 struct bfd_link_info *info,
55fd94b0
AM		 1758 Elf_Internal_Rela *rel,
1759 struct elf_link_hash_entry *h,
1760 Elf_Internal_Sym *sym)
252b5132
RH		 1761{
1762 if (h != NULL)
07adf181
AM		 1763 switch (ELF32_R_TYPE (rel->r_info))
1764 {
1765 case R_386_GNU_VTINHERIT:
1766 case R_386_GNU_VTENTRY:
1767 return NULL;
1768 }
1769
1770 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1771}
1772
1773/* Update the got entry reference counts for the section being removed. */
1774
b34976b6 1775static bfd_boolean
55fd94b0
AM		 1776elf_i386_gc_sweep_hook (bfd *abfd,
1777 struct bfd_link_info *info,
1778 asection *sec,
1779 const Elf_Internal_Rela *relocs)
252b5132 1780{
4dfe6ac6 1781 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 1782 Elf_Internal_Shdr *symtab_hdr;
1783 struct elf_link_hash_entry **sym_hashes;
1784 bfd_signed_vma *local_got_refcounts;
1785 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1786
7dda2462
TG		 1787 if (info->relocatable)
1788 return TRUE;
1789
4dfe6ac6
NC		 1790 htab = elf_i386_hash_table (info);
1791 if (htab == NULL)
1792 return FALSE;
1793
ec338859 1794 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1795
0ffa91dd 1796 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 1797 sym_hashes = elf_sym_hashes (abfd);
1798 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1799
1800 relend = relocs + sec->reloc_count;
1801 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1802 {
1803 unsigned long r_symndx;
1804 unsigned int r_type;
1805 struct elf_link_hash_entry *h = NULL;
37e55690 1806
26e41594
AM		 1807 r_symndx = ELF32_R_SYM (rel->r_info);
1808 if (r_symndx >= symtab_hdr->sh_info)
1809 {
1810 struct elf_i386_link_hash_entry *eh;
e03a8ed8
L		 1811 struct elf_dyn_relocs **pp;
1812 struct elf_dyn_relocs *p;
dd5724d5 1813
26e41594 1814 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1815 while (h->root.type == bfd_link_hash_indirect
1816 || h->root.type == bfd_link_hash_warning)
1817 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1818 eh = (struct elf_i386_link_hash_entry *) h;
0c715baa 1819
26e41594
AM		 1820 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1821 if (p->sec == sec)
1822 {
1823 /* Everything must go for SEC. */
1824 *pp = p->next;
1825 break;
1826 }
1827 }
bb1cb422
L		 1828 else
1829 {
1830 /* A local symbol. */
1831 Elf_Internal_Sym *isym;
1832
1833 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1834 abfd, r_symndx);
1835
1836 /* Check relocation against local STT_GNU_IFUNC symbol. */
1837 if (isym != NULL
1838 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1839 {
1840 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
1841 if (h == NULL)
1842 abort ();
1843 }
1844 }
0c715baa 1845
26e41594 1846 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 1847 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1848 symtab_hdr, sym_hashes,
1849 &r_type, GOT_UNKNOWN,
4c544807 1850 rel, relend, h, r_symndx))
142411ca
L		 1851 return FALSE;
1852
26e41594
AM		 1853 switch (r_type)
1854 {
1855 case R_386_TLS_LDM:
4dfe6ac6
NC		 1856 if (htab->tls_ldm_got.refcount > 0)
1857 htab->tls_ldm_got.refcount -= 1;
26e41594 1858 break;
0c715baa 1859
26e41594 1860 case R_386_TLS_GD:
67a4f2b7
AO		 1861 case R_386_TLS_GOTDESC:
1862 case R_386_TLS_DESC_CALL:
26e41594
AM		 1863 case R_386_TLS_IE_32:
1864 case R_386_TLS_IE:
1865 case R_386_TLS_GOTIE:
1866 case R_386_GOT32:
1867 if (h != NULL)
1868 {
1869 if (h->got.refcount > 0)
1870 h->got.refcount -= 1;
bb1cb422
L		 1871 if (h->type == STT_GNU_IFUNC)
1872 {
1873 if (h->plt.refcount > 0)
1874 h->plt.refcount -= 1;
1875 }
26e41594
AM		 1876 }
1877 else if (local_got_refcounts != NULL)
1878 {
1879 if (local_got_refcounts[r_symndx] > 0)
1880 local_got_refcounts[r_symndx] -= 1;
1881 }
1882 break;
0c715baa 1883
26e41594
AM		 1884 case R_386_32:
1885 case R_386_PC32:
1886 if (info->shared)
1887 break;
1888 /* Fall through */
6725bdbf 1889
26e41594
AM		 1890 case R_386_PLT32:
1891 if (h != NULL)
1892 {
1893 if (h->plt.refcount > 0)
1894 h->plt.refcount -= 1;
1895 }
1896 break;
dd5724d5 1897
bb1cb422
L		 1898 case R_386_GOTOFF:
1899 if (h != NULL && h->type == STT_GNU_IFUNC)
1900 {
1901 if (h->got.refcount > 0)
1902 h->got.refcount -= 1;
1903 if (h->plt.refcount > 0)
1904 h->plt.refcount -= 1;
1905 }
1906 break;
1907
26e41594
AM		 1908 default:
1909 break;
1910 }
1911 }
252b5132 1912
b34976b6 1913 return TRUE;
252b5132
RH		 1914}
1915
1916/* Adjust a symbol defined by a dynamic object and referenced by a
1917 regular object. The current definition is in some section of the
1918 dynamic object, but we're not including those sections. We have to
1919 change the definition to something the rest of the link can
1920 understand. */
1921
b34976b6 1922static bfd_boolean
55fd94b0
AM		 1923elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
1924 struct elf_link_hash_entry *h)
252b5132 1925{
6725bdbf 1926 struct elf_i386_link_hash_table *htab;
252b5132 1927 asection *s;
252b5132 1928
cbe950e9
L		 1929 /* STT_GNU_IFUNC symbol must go through PLT. */
1930 if (h->type == STT_GNU_IFUNC)
1931 {
1932 if (h->plt.refcount <= 0)
1933 {
1934 h->plt.offset = (bfd_vma) -1;
1935 h->needs_plt = 0;
1936 }
1937 return TRUE;
1938 }
1939
252b5132
RH		 1940 /* If this is a function, put it in the procedure linkage table. We
1941 will fill in the contents of the procedure linkage table later,
1942 when we know the address of the .got section. */
1943 if (h->type == STT_FUNC
f5385ebf 1944 || h->needs_plt)
252b5132 1945 {
6725bdbf 1946 if (h->plt.refcount <= 0
9c7a29a3
AM		 1947 || SYMBOL_CALLS_LOCAL (info, h)
1948 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1949 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 1950 {
1951 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 1952 file, but the symbol was never referred to by a dynamic
1953 object, or if all references were garbage collected. In
1954 such a case, we don't actually need to build a procedure
1955 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 1956 h->plt.offset = (bfd_vma) -1;
f5385ebf 1957 h->needs_plt = 0;
252b5132
RH		 1958 }
1959
b34976b6 1960 return TRUE;
252b5132 1961 }
6725bdbf
AM		 1962 else
1963 /* It's possible that we incorrectly decided a .plt reloc was
1964 needed for an R_386_PC32 reloc to a non-function sym in
1965 check_relocs. We can't decide accurately between function and
1966 non-function syms in check-relocs; Objects loaded later in
1967 the link may change h->type. So fix it now. */
bbd7ec4a 1968 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 1969
1970 /* If this is a weak symbol, and there is a real definition, the
1971 processor independent code will have arranged for us to see the
1972 real definition first, and we can just use the same value. */
f6e332e6 1973 if (h->u.weakdef != NULL)
252b5132 1974 {
f6e332e6
AM		 1975 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1976 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1977 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1978 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 1979 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1980 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1981 return TRUE;
252b5132
RH		 1982 }
1983
1984 /* This is a reference to a symbol defined by a dynamic object which
1985 is not a function. */
1986
1987 /* If we are creating a shared library, we must presume that the
1988 only references to the symbol are via the global offset table.
1989 For such cases we need not do anything here; the relocations will
1990 be handled correctly by relocate_section. */
1991 if (info->shared)
b34976b6 1992 return TRUE;
252b5132 1993
7843f00e
ILT		 1994 /* If there are no references to this symbol that do not use the
1995 GOT, we don't need to generate a copy reloc. */
f5385ebf 1996 if (!h->non_got_ref)
b34976b6 1997 return TRUE;
7843f00e 1998
8bd621d8
AM		 1999 /* If -z nocopyreloc was given, we won't generate them either. */
2000 if (info->nocopyreloc)
2001 {
f5385ebf 2002 h->non_got_ref = 0;
b34976b6 2003 return TRUE;
8bd621d8
AM		 2004 }
2005
643796e3 2006 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2007 if (htab == NULL)
2008 return FALSE;
643796e3
DJ		 2009
2010 /* If there aren't any dynamic relocs in read-only sections, then
2011 we can keep the dynamic relocs and avoid the copy reloc. This
2012 doesn't work on VxWorks, where we can not have dynamic relocations
2013 (other than copy and jump slot relocations) in an executable. */
2014 if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks)
ebe50bae 2015 {
a23b6845 2016 struct elf_i386_link_hash_entry * eh;
e03a8ed8 2017 struct elf_dyn_relocs *p;
ebe50bae 2018
a23b6845
AM		 2019 eh = (struct elf_i386_link_hash_entry *) h;
2020 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2021 {
2022 s = p->sec->output_section;
2023 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2024 break;
2025 }
2026
a23b6845
AM		 2027 if (p == NULL)
2028 {
f5385ebf 2029 h->non_got_ref = 0;
a23b6845
AM		 2030 return TRUE;
2031 }
ebe50bae
AM		 2032 }
2033
909272ee
AM		 2034 if (h->size == 0)
2035 {
2036 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2037 h->root.root.string);
2038 return TRUE;
2039 }
2040
252b5132
RH		 2041 /* We must allocate the symbol in our .dynbss section, which will
2042 become part of the .bss section of the executable. There will be
2043 an entry for this symbol in the .dynsym section. The dynamic
2044 object will contain position independent code, so all references
2045 from the dynamic object to this symbol will go through the global
2046 offset table. The dynamic linker will use the .dynsym entry to
2047 determine the address it must put in the global offset table, so
2048 both the dynamic object and the regular object will refer to the
2049 same memory location for the variable. */
2050
252b5132
RH		 2051 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2052 copy the initial value out of the dynamic object and into the
0ac8d2ca 2053 runtime process image. */
252b5132
RH		 2054 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2055 {
eea6121a 2056 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2057 h->needs_copy = 1;
252b5132
RH		 2058 }
2059
0ac8d2ca 2060 s = htab->sdynbss;
252b5132 2061
027297b7 2062 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH		 2063}
2064
6725bdbf 2065/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2066 dynamic relocs. */
6725bdbf 2067
b34976b6 2068static bfd_boolean
eb4ff4d6 2069elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2070{
2071 struct bfd_link_info *info;
2072 struct elf_i386_link_hash_table *htab;
5a15f56f 2073 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2074 struct elf_dyn_relocs *p;
6725bdbf 2075
e92d460e 2076 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2077 return TRUE;
6725bdbf 2078
e92d460e
AM		 2079 if (h->root.type == bfd_link_hash_warning)
2080 /* When warning symbols are created, they **replace** the "real"
2081 entry in the hash table, thus we never get to see the real
2082 symbol in a hash traversal. So look at it now. */
2083 h = (struct elf_link_hash_entry *) h->root.u.i.link;
cbe950e9 2084 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2085
6725bdbf
AM		 2086 info = (struct bfd_link_info *) inf;
2087 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2088 if (htab == NULL)
2089 return FALSE;
6725bdbf 2090
cbe950e9
L		 2091 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2092 here if it is defined and referenced in a non-shared object. */
2093 if (h->type == STT_GNU_IFUNC
2094 && h->def_regular)
e03a8ed8
L		 2095 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
2096 &eh->dyn_relocs,
2097 PLT_ENTRY_SIZE, 4);
cbe950e9
L		 2098 else if (htab->elf.dynamic_sections_created
2099 && h->plt.refcount > 0)
6725bdbf 2100 {
5a15f56f
AM		 2101 /* Make sure this symbol is output as a dynamic symbol.
2102 Undefined weak syms won't yet be marked as dynamic. */
2103 if (h->dynindx == -1
f5385ebf 2104 && !h->forced_local)
5a15f56f 2105 {
c152c796 2106 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2107 return FALSE;
5a15f56f
AM		 2108 }
2109
4e795f50
AM		 2110 if (info->shared
2111 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2112 {
6de2ae4a 2113 asection *s = htab->elf.splt;
6725bdbf 2114
ced53ee5
AM		 2115 /* If this is the first .plt entry, make room for the special
2116 first entry. */
eea6121a
AM		 2117 if (s->size == 0)
2118 s->size += PLT_ENTRY_SIZE;
6725bdbf 2119
eea6121a 2120 h->plt.offset = s->size;
6725bdbf 2121
ced53ee5
AM		 2122 /* If this symbol is not defined in a regular file, and we are
2123 not generating a shared library, then set the symbol to this
2124 location in the .plt. This is required to make function
2125 pointers compare as equal between the normal executable and
2126 the shared library. */
2127 if (! info->shared
f5385ebf 2128 && !h->def_regular)
ced53ee5
AM		 2129 {
2130 h->root.u.def.section = s;
2131 h->root.u.def.value = h->plt.offset;
2132 }
6725bdbf 2133
ced53ee5 2134 /* Make room for this entry. */
eea6121a 2135 s->size += PLT_ENTRY_SIZE;
6725bdbf 2136
ced53ee5
AM		 2137 /* We also need to make an entry in the .got.plt section, which
2138 will be placed in the .got section by the linker script. */
6de2ae4a 2139 htab->elf.sgotplt->size += 4;
6725bdbf 2140
6725bdbf 2141 /* We also need to make an entry in the .rel.plt section. */
6de2ae4a 2142 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
5ae0bfb6 2143 htab->next_tls_desc_index++;
eac338cf
PB		 2144
2145 if (htab->is_vxworks && !info->shared)
2146 {
2147 /* VxWorks has a second set of relocations for each PLT entry
2148 in executables. They go in a separate relocation section,
2149 which is processed by the kernel loader. */
2150
2151 /* There are two relocations for the initial PLT entry: an
2152 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2153 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2154
2155 if (h->plt.offset == PLT_ENTRY_SIZE)
2156 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2157
2158 /* There are two extra relocations for each subsequent PLT entry:
2159 an R_386_32 relocation for the GOT entry, and an R_386_32
2160 relocation for the PLT entry. */
2161
2162 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2163 }
6725bdbf 2164 }
ced53ee5
AM		 2165 else
2166 {
51b64d56 2167 h->plt.offset = (bfd_vma) -1;
f5385ebf 2168 h->needs_plt = 0;
ced53ee5 2169 }
6725bdbf
AM		 2170 }
2171 else
2172 {
51b64d56 2173 h->plt.offset = (bfd_vma) -1;
f5385ebf 2174 h->needs_plt = 0;
6725bdbf
AM		 2175 }
2176
67a4f2b7
AO		 2177 eh->tlsdesc_got = (bfd_vma) -1;
2178
37e55690 2179 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2180 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2181 if (h->got.refcount > 0
1d85728f 2182 && info->executable
13ae64f3 2183 && h->dynindx == -1
37e55690 2184 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2185 h->got.offset = (bfd_vma) -1;
13ae64f3 2186 else if (h->got.refcount > 0)
6725bdbf 2187 {
0ac8d2ca 2188 asection *s;
b34976b6 2189 bfd_boolean dyn;
13ae64f3 2190 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2191
5a15f56f
AM		 2192 /* Make sure this symbol is output as a dynamic symbol.
2193 Undefined weak syms won't yet be marked as dynamic. */
2194 if (h->dynindx == -1
f5385ebf 2195 && !h->forced_local)
5a15f56f 2196 {
c152c796 2197 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2198 return FALSE;
5a15f56f
AM		 2199 }
2200
6de2ae4a 2201 s = htab->elf.sgot;
67a4f2b7
AO		 2202 if (GOT_TLS_GDESC_P (tls_type))
2203 {
6de2ae4a 2204 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2205 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2206 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2207 h->got.offset = (bfd_vma) -2;
2208 }
2209 if (! GOT_TLS_GDESC_P (tls_type)
2210 || GOT_TLS_GD_P (tls_type))
2211 {
2212 h->got.offset = s->size;
2213 s->size += 4;
2214 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2215 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2216 s->size += 4;
2217 }
ebe50bae 2218 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2219 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2220 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2221 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2222 need two), R_386_TLS_GD needs one if local symbol and two if
2223 global. */
2224 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2225 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2226 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2227 || (tls_type & GOT_TLS_IE))
6de2ae4a 2228 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2229 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2230 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2231 else if (! GOT_TLS_GDESC_P (tls_type)
2232 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2233 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 2234 && (info->shared
2235 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2236 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2237 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2238 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2239 }
2240 else
51b64d56 2241 h->got.offset = (bfd_vma) -1;
6725bdbf 2242
5a15f56f 2243 if (eh->dyn_relocs == NULL)
b34976b6 2244 return TRUE;
5a15f56f 2245
0c715baa
AM		 2246 /* In the shared -Bsymbolic case, discard space allocated for
2247 dynamic pc-relative relocs against symbols which turn out to be
2248 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2249 space for pc-relative relocs that have become local due to symbol
2250 visibility changes. */
0c715baa
AM		 2251
2252 if (info->shared)
5a15f56f 2253 {
09695f56
AM		 2254 /* The only reloc that uses pc_count is R_386_PC32, which will
2255 appear on a call or on something like ".long foo - .". We
2256 want calls to protected symbols to resolve directly to the
2257 function rather than going via the plt. If people want
2258 function pointer comparisons to work as expected then they
2259 should avoid writing assembly like ".long foo - .". */
2260 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2261 {
e03a8ed8 2262 struct elf_dyn_relocs **pp;
0c715baa
AM		 2263
2264 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2265 {
2266 p->count -= p->pc_count;
2267 p->pc_count = 0;
2268 if (p->count == 0)
2269 *pp = p->next;
2270 else
2271 pp = &p->next;
2272 }
5a15f56f 2273 }
4e795f50 2274
3348747a
NS		 2275 if (htab->is_vxworks)
2276 {
e03a8ed8 2277 struct elf_dyn_relocs **pp;
3348747a
NS		 2278 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2279 {
2280 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2281 *pp = p->next;
2282 else
2283 pp = &p->next;
2284 }
2285 }
2286
4e795f50 2287 /* Also discard relocs on undefined weak syms with non-default
3348747a 2288 visibility. */
22d606e9 2289 if (eh->dyn_relocs != NULL
4e795f50 2290 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2291 {
2292 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2293 eh->dyn_relocs = NULL;
2294
2295 /* Make sure undefined weak symbols are output as a dynamic
2296 symbol in PIEs. */
2297 else if (h->dynindx == -1
2298 && !h->forced_local)
2299 {
2300 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2301 return FALSE;
2302 }
2303 }
0c715baa 2304 }
a23b6845 2305 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2306 {
2307 /* For the non-shared case, discard space for relocs against
2308 symbols which turn out to need copy relocs or are not
2309 dynamic. */
2310
f5385ebf
AM		 2311 if (!h->non_got_ref
2312 && ((h->def_dynamic
2313 && !h->def_regular)
ebe50bae 2314 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2315 && (h->root.type == bfd_link_hash_undefweak
2316 || h->root.type == bfd_link_hash_undefined))))
2317 {
2318 /* Make sure this symbol is output as a dynamic symbol.
2319 Undefined weak syms won't yet be marked as dynamic. */
2320 if (h->dynindx == -1
f5385ebf 2321 && !h->forced_local)
0c715baa 2322 {
c152c796 2323 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2324 return FALSE;
0c715baa 2325 }
5a15f56f 2326
0c715baa
AM		 2327 /* If that succeeded, we know we'll be keeping all the
2328 relocs. */
2329 if (h->dynindx != -1)
2330 goto keep;
2331 }
2332
2333 eh->dyn_relocs = NULL;
2334
ec338859 2335 keep: ;
5a15f56f
AM		 2336 }
2337
0c715baa
AM		 2338 /* Finally, allocate space. */
2339 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2340 {
e7c33416
NC		 2341 asection *sreloc;
2342
cbe950e9 2343 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2344
2345 BFD_ASSERT (sreloc != NULL);
eea6121a 2346 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2347 }
2348
b34976b6 2349 return TRUE;
6725bdbf
AM		 2350}
2351
c25bc9fc
L		 2352/* Allocate space in .plt, .got and associated reloc sections for
2353 local dynamic relocs. */
2354
2355static bfd_boolean
2356elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2357{
2358 struct elf_link_hash_entry *h
2359 = (struct elf_link_hash_entry *) *slot;
2360
2361 if (h->type != STT_GNU_IFUNC
2362 || !h->def_regular
2363 || !h->ref_regular
2364 || !h->forced_local
2365 || h->root.type != bfd_link_hash_defined)
2366 abort ();
2367
2368 return elf_i386_allocate_dynrelocs (h, inf);
2369}
2370
0c715baa
AM		 2371/* Find any dynamic relocs that apply to read-only sections. */
2372
b34976b6 2373static bfd_boolean
eb4ff4d6 2374elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2375{
2376 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2377 struct elf_dyn_relocs *p;
0c715baa 2378
e92d460e
AM		 2379 if (h->root.type == bfd_link_hash_warning)
2380 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2381
0c715baa
AM		 2382 eh = (struct elf_i386_link_hash_entry *) h;
2383 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2384 {
2385 asection *s = p->sec->output_section;
2386
2387 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2388 {
2389 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2390
2391 info->flags |= DF_TEXTREL;
2392
2393 /* Not an error, just cut short the traversal. */
b34976b6 2394 return FALSE;
0c715baa
AM		 2395 }
2396 }
b34976b6 2397 return TRUE;
0c715baa
AM		 2398}
2399
252b5132
RH		 2400/* Set the sizes of the dynamic sections. */
2401
b34976b6 2402static bfd_boolean
55fd94b0
AM		 2403elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2404 struct bfd_link_info *info)
252b5132 2405{
6725bdbf 2406 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2407 bfd *dynobj;
2408 asection *s;
b34976b6 2409 bfd_boolean relocs;
0c715baa 2410 bfd *ibfd;
252b5132 2411
6725bdbf 2412 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2413 if (htab == NULL)
2414 return FALSE;
ebe50bae 2415 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2416 if (dynobj == NULL)
2417 abort ();
252b5132 2418
ebe50bae 2419 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2420 {
2421 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2422 if (info->executable)
252b5132
RH		 2423 {
2424 s = bfd_get_section_by_name (dynobj, ".interp");
ffb2e45b
AM		 2425 if (s == NULL)
2426 abort ();
eea6121a 2427 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2428 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2429 }
161d71a6 2430 }
6725bdbf 2431
0c715baa
AM		 2432 /* Set up .got offsets for local syms, and space for local dynamic
2433 relocs. */
2434 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 2435 {
2436 bfd_signed_vma *local_got;
2437 bfd_signed_vma *end_local_got;
13ae64f3 2438 char *local_tls_type;
67a4f2b7 2439 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2440 bfd_size_type locsymcount;
2441 Elf_Internal_Shdr *symtab_hdr;
2442 asection *srel;
6725bdbf 2443
0ffa91dd 2444 if (! is_i386_elf (ibfd))
161d71a6 2445 continue;
6725bdbf 2446
0c715baa
AM		 2447 for (s = ibfd->sections; s != NULL; s = s->next)
2448 {
e03a8ed8 2449 struct elf_dyn_relocs *p;
0c715baa 2450
e03a8ed8 2451 for (p = ((struct elf_dyn_relocs *)
e81d3500 2452 elf_section_data (s)->local_dynrel);
ec338859
AM		 2453 p != NULL;
2454 p = p->next)
0c715baa 2455 {
ec338859
AM		 2456 if (!bfd_is_abs_section (p->sec)
2457 && bfd_is_abs_section (p->sec->output_section))
2458 {
2459 /* Input section has been discarded, either because
2460 it is a copy of a linkonce section or due to
2461 linker script /DISCARD/, so we'll be discarding
2462 the relocs too. */
2463 }
3348747a
NS		 2464 else if (htab->is_vxworks
2465 && strcmp (p->sec->output_section->name,
2466 ".tls_vars") == 0)
2467 {
2468 /* Relocations in vxworks .tls_vars sections are
2469 handled specially by the loader. */
2470 }
248866a8 2471 else if (p->count != 0)
ec338859
AM		 2472 {
2473 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2474 srel->size += p->count * sizeof (Elf32_External_Rel);
248866a8
AM		 2475 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2476 info->flags |= DF_TEXTREL;
ec338859 2477 }
0c715baa
AM		 2478 }
2479 }
2480
2481 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2482 if (!local_got)
2483 continue;
6725bdbf 2484
0ffa91dd 2485 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2486 locsymcount = symtab_hdr->sh_info;
2487 end_local_got = local_got + locsymcount;
13ae64f3 2488 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2489 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2490 s = htab->elf.sgot;
2491 srel = htab->elf.srelgot;
67a4f2b7
AO		 2492 for (; local_got < end_local_got;
2493 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2494 {
67a4f2b7 2495 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2496 if (*local_got > 0)
6725bdbf 2497 {
67a4f2b7
AO		 2498 if (GOT_TLS_GDESC_P (*local_tls_type))
2499 {
6de2ae4a 2500 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2501 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2502 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2503 *local_got = (bfd_vma) -2;
2504 }
2505 if (! GOT_TLS_GDESC_P (*local_tls_type)
2506 || GOT_TLS_GD_P (*local_tls_type))
2507 {
2508 *local_got = s->size;
2509 s->size += 4;
2510 if (GOT_TLS_GD_P (*local_tls_type)
2511 || *local_tls_type == GOT_TLS_IE_BOTH)
2512 s->size += 4;
2513 }
13ae64f3 2514 if (info->shared
67a4f2b7 2515 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2516 || (*local_tls_type & GOT_TLS_IE))
2517 {
2518 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2519 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2520 else if (GOT_TLS_GD_P (*local_tls_type)
2521 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2522 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2523 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2524 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2525 }
6725bdbf 2526 }
161d71a6
L		 2527 else
2528 *local_got = (bfd_vma) -1;
6725bdbf 2529 }
252b5132 2530 }
6725bdbf 2531
13ae64f3
JJ		 2532 if (htab->tls_ldm_got.refcount > 0)
2533 {
2534 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2535 relocs. */
6de2ae4a
L		 2536 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2537 htab->elf.sgot->size += 8;
2538 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2539 }
2540 else
2541 htab->tls_ldm_got.offset = -1;
2542
0c715baa
AM		 2543 /* Allocate global sym .plt and .got entries, and space for global
2544 sym dynamic relocs. */
eb4ff4d6 2545 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2546
c25bc9fc
L		 2547 /* Allocate .plt and .got entries, and space for local symbols. */
2548 htab_traverse (htab->loc_hash_table,
2549 elf_i386_allocate_local_dynrelocs,
2550 info);
2551
67a4f2b7
AO		 2552 /* For every jump slot reserved in the sgotplt, reloc_count is
2553 incremented. However, when we reserve space for TLS descriptors,
2554 it's not incremented, so in order to compute the space reserved
2555 for them, it suffices to multiply the reloc count by the jump
2556 slot size. */
6de2ae4a 2557 if (htab->elf.srelplt)
5ae0bfb6 2558 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
67a4f2b7 2559
a7b16ceb
L		 2560 if (htab->elf.sgotplt)
2561 {
e28df02b
L		 2562 struct elf_link_hash_entry *got;
2563 got = elf_link_hash_lookup (elf_hash_table (info),
2564 "_GLOBAL_OFFSET_TABLE_",
2565 FALSE, FALSE, FALSE);
2566
a7b16ceb 2567 /* Don't allocate .got.plt section if there are no GOT nor PLT
e28df02b
L		 2568 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2569 if ((got == NULL
2570 || !got->ref_regular_nonweak)
2571 && (htab->elf.sgotplt->size
2572 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2573 && (htab->elf.splt == NULL
2574 || htab->elf.splt->size == 0)
2575 && (htab->elf.sgot == NULL
2576 || htab->elf.sgot->size == 0)
2577 && (htab->elf.iplt == NULL
2578 || htab->elf.iplt->size == 0)
2579 && (htab->elf.igotplt == NULL
2580 || htab->elf.igotplt->size == 0))
2581 htab->elf.sgotplt->size = 0;
2582 }
2583
5a15f56f
AM		 2584 /* We now have determined the sizes of the various dynamic sections.
2585 Allocate memory for them. */
b34976b6 2586 relocs = FALSE;
252b5132
RH		 2587 for (s = dynobj->sections; s != NULL; s = s->next)
2588 {
eac338cf
PB		 2589 bfd_boolean strip_section = TRUE;
2590
252b5132
RH		 2591 if ((s->flags & SEC_LINKER_CREATED) == 0)
2592 continue;
2593
6de2ae4a
L		 2594 if (s == htab->elf.splt
2595 || s == htab->elf.sgot
2596 || s == htab->elf.sgotplt
2597 || s == htab->elf.iplt
2598 || s == htab->elf.igotplt
75ff4589 2599 || s == htab->sdynbss)
252b5132 2600 {
6725bdbf
AM		 2601 /* Strip this section if we don't need it; see the
2602 comment below. */
eac338cf
PB		 2603 /* We'd like to strip these sections if they aren't needed, but if
2604 we've exported dynamic symbols from them we must leave them.
2605 It's too late to tell BFD to get rid of the symbols. */
2606
7325306f 2607 if (htab->elf.hplt != NULL)
eac338cf 2608 strip_section = FALSE;
252b5132 2609 }
0112cd26 2610 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2611 {
6de2ae4a
L		 2612 if (s->size != 0
2613 && s != htab->elf.srelplt
2614 && s != htab->srelplt2)
b34976b6 2615 relocs = TRUE;
252b5132 2616
0ac8d2ca
AM		 2617 /* We use the reloc_count field as a counter if we need
2618 to copy relocs into the output file. */
5ae0bfb6 2619 s->reloc_count = 0;
252b5132 2620 }
6725bdbf 2621 else
252b5132
RH		 2622 {
2623 /* It's not one of our sections, so don't allocate space. */
2624 continue;
2625 }
2626
c456f082 2627 if (s->size == 0)
252b5132 2628 {
0ac8d2ca
AM		 2629 /* If we don't need this section, strip it from the
2630 output file. This is mostly to handle .rel.bss and
2631 .rel.plt. We must create both sections in
2632 create_dynamic_sections, because they must be created
2633 before the linker maps input sections to output
2634 sections. The linker does that before
2635 adjust_dynamic_symbol is called, and it is that
2636 function which decides whether anything needs to go
2637 into these sections. */
c456f082
AM		 2638 if (strip_section)
2639 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2640 continue;
2641 }
2642
c456f082
AM		 2643 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2644 continue;
2645
f69da49f
AM		 2646 /* Allocate memory for the section contents. We use bfd_zalloc
2647 here in case unused entries are not reclaimed before the
2648 section's contents are written out. This should not happen,
2649 but this way if it does, we get a R_386_NONE reloc instead
2650 of garbage. */
a50b1753 2651 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 2652 if (s->contents == NULL)
b34976b6 2653 return FALSE;
252b5132
RH		 2654 }
2655
ebe50bae 2656 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2657 {
2658 /* Add some entries to the .dynamic section. We fill in the
2659 values later, in elf_i386_finish_dynamic_sections, but we
2660 must add the entries now so that we get the correct size for
2661 the .dynamic section. The DT_DEBUG entry is filled in by the
2662 dynamic linker and used by the debugger. */
dc810e39 2663#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2664 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2665
36af4a4e 2666 if (info->executable)
252b5132 2667 {
dc810e39 2668 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2669 return FALSE;
252b5132
RH		 2670 }
2671
6de2ae4a 2672 if (htab->elf.splt->size != 0)
252b5132 2673 {
dc810e39
AM		 2674 if (!add_dynamic_entry (DT_PLTGOT, 0)
2675 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2676 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2677 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2678 return FALSE;
252b5132
RH		 2679 }
2680
2681 if (relocs)
2682 {
dc810e39
AM		 2683 if (!add_dynamic_entry (DT_REL, 0)
2684 || !add_dynamic_entry (DT_RELSZ, 0)
2685 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 2686 return FALSE;
252b5132 2687
0c715baa
AM		 2688 /* If any dynamic relocs apply to a read-only section,
2689 then we need a DT_TEXTREL entry. */
248866a8 2690 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 2691 elf_link_hash_traverse (&htab->elf,
2692 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 2693
2694 if ((info->flags & DF_TEXTREL) != 0)
2695 {
2696 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2697 return FALSE;
0c715baa 2698 }
252b5132 2699 }
7a2b07ff
NS		 2700 if (htab->is_vxworks
2701 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2702 return FALSE;
252b5132 2703 }
dc810e39 2704#undef add_dynamic_entry
252b5132 2705
b34976b6 2706 return TRUE;
252b5132
RH		 2707}
2708
67a4f2b7
AO		 2709static bfd_boolean
2710elf_i386_always_size_sections (bfd *output_bfd,
2711 struct bfd_link_info *info)
2712{
2713 asection *tls_sec = elf_hash_table (info)->tls_sec;
2714
2715 if (tls_sec)
2716 {
2717 struct elf_link_hash_entry *tlsbase;
2718
2719 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
2720 "_TLS_MODULE_BASE_",
2721 FALSE, FALSE, FALSE);
2722
2723 if (tlsbase && tlsbase->type == STT_TLS)
2724 {
4dfe6ac6 2725 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 2726 struct bfd_link_hash_entry *bh = NULL;
2727 const struct elf_backend_data *bed
2728 = get_elf_backend_data (output_bfd);
2729
4dfe6ac6
NC		 2730 htab = elf_i386_hash_table (info);
2731 if (htab == NULL)
2732 return FALSE;
2733
67a4f2b7
AO		 2734 if (!(_bfd_generic_link_add_one_symbol
2735 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
2736 tls_sec, 0, NULL, FALSE,
2737 bed->collect, &bh)))
2738 return FALSE;
9f03412a 2739
4dfe6ac6 2740 htab->tls_module_base = bh;
9f03412a 2741
67a4f2b7
AO		 2742 tlsbase = (struct elf_link_hash_entry *)bh;
2743 tlsbase->def_regular = 1;
2744 tlsbase->other = STV_HIDDEN;
2745 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
2746 }
2747 }
2748
2749 return TRUE;
2750}
2751
38701953
AM		 2752/* Set the correct type for an x86 ELF section. We do this by the
2753 section name, which is a hack, but ought to work. */
2754
b34976b6 2755static bfd_boolean
55fd94b0
AM		 2756elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2757 Elf_Internal_Shdr *hdr,
2758 asection *sec)
38701953 2759{
91d6fa6a 2760 const char *name;
38701953
AM		 2761
2762 name = bfd_get_section_name (abfd, sec);
2763
2764 /* This is an ugly, but unfortunately necessary hack that is
2765 needed when producing EFI binaries on x86. It tells
2766 elf.c:elf_fake_sections() not to consider ".reloc" as a section
2767 containing ELF relocation info. We need this hack in order to
2768 be able to generate ELF binaries that can be translated into
2769 EFI applications (which are essentially COFF objects). Those
2770 files contain a COFF ".reloc" section inside an ELFNN object,
2771 which would normally cause BFD to segfault because it would
2772 attempt to interpret this section as containing relocation
2773 entries for section "oc". With this hack enabled, ".reloc"
2774 will be treated as a normal data section, which will avoid the
2775 segfault. However, you won't be able to create an ELFNN binary
2776 with a section named "oc" that needs relocations, but that's
2777 the kind of ugly side-effects you get when detecting section
2778 types based on their names... In practice, this limitation is
2779 unlikely to bite. */
2780 if (strcmp (name, ".reloc") == 0)
2781 hdr->sh_type = SHT_PROGBITS;
2782
b34976b6 2783 return TRUE;
38701953
AM		 2784}
2785
9f03412a
AO		 2786/* _TLS_MODULE_BASE_ needs to be treated especially when linking
2787 executables. Rather than setting it to the beginning of the TLS
2788 section, we have to set it to the end. This function may be called
2789 multiple times, it is idempotent. */
2790
2791static void
eb4ff4d6 2792elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 2793{
4dfe6ac6 2794 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 2795 struct bfd_link_hash_entry *base;
2796
2797 if (!info->executable)
2798 return;
2799
4dfe6ac6
NC		 2800 htab = elf_i386_hash_table (info);
2801 if (htab == NULL)
2802 return;
9f03412a 2803
4dfe6ac6
NC		 2804 base = htab->tls_module_base;
2805 if (base == NULL)
9f03412a
AO		 2806 return;
2807
4dfe6ac6 2808 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 2809}
2810
13ae64f3
JJ		 2811/* Return the base VMA address which should be subtracted from real addresses
2812 when resolving @dtpoff relocation.
2813 This is PT_TLS segment p_vaddr. */
2814
2815static bfd_vma
eb4ff4d6 2816elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 2817{
e1918d23
AM		 2818 /* If tls_sec is NULL, we should have signalled an error already. */
2819 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 2820 return 0;
e1918d23 2821 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 2822}
2823
2824/* Return the relocation value for @tpoff relocation
2825 if STT_TLS virtual address is ADDRESS. */
2826
2827static bfd_vma
eb4ff4d6 2828elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 2829{
e1918d23 2830 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 2831 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2832 bfd_vma static_tls_size;
13ae64f3 2833
e1918d23
AM		 2834 /* If tls_sec is NULL, we should have signalled an error already. */
2835 if (htab->tls_sec == NULL)
6a30718d 2836 return 0;
7dc98aea
RO		 2837
2838 /* Consider special static TLS alignment requirements. */
2839 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2840 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 2841}
2842
252b5132
RH		 2843/* Relocate an i386 ELF section. */
2844
b34976b6 2845static bfd_boolean
55fd94b0
AM		 2846elf_i386_relocate_section (bfd *output_bfd,
2847 struct bfd_link_info *info,
2848 bfd *input_bfd,
2849 asection *input_section,
2850 bfd_byte *contents,
2851 Elf_Internal_Rela *relocs,
2852 Elf_Internal_Sym *local_syms,
2853 asection **local_sections)
252b5132 2854{
6725bdbf 2855 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2856 Elf_Internal_Shdr *symtab_hdr;
2857 struct elf_link_hash_entry **sym_hashes;
2858 bfd_vma *local_got_offsets;
67a4f2b7 2859 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 2860 Elf_Internal_Rela *rel;
2861 Elf_Internal_Rela *relend;
3348747a 2862 bfd_boolean is_vxworks_tls;
252b5132 2863
0ffa91dd 2864 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 2865
6725bdbf 2866 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2867 if (htab == NULL)
2868 return FALSE;
0ffa91dd 2869 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 2870 sym_hashes = elf_sym_hashes (input_bfd);
2871 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 2872 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 2873 /* We have to handle relocations in vxworks .tls_vars sections
2874 specially, because the dynamic loader is 'weird'. */
2875 is_vxworks_tls = (htab->is_vxworks && info->shared
2876 && !strcmp (input_section->output_section->name,
2877 ".tls_vars"));
252b5132 2878
eb4ff4d6 2879 elf_i386_set_tls_module_base (info);
9f03412a 2880
252b5132
RH		 2881 rel = relocs;
2882 relend = relocs + input_section->reloc_count;
2883 for (; rel < relend; rel++)
2884 {
13ae64f3 2885 unsigned int r_type;
252b5132
RH		 2886 reloc_howto_type *howto;
2887 unsigned long r_symndx;
2888 struct elf_link_hash_entry *h;
2889 Elf_Internal_Sym *sym;
2890 asection *sec;
67a4f2b7 2891 bfd_vma off, offplt;
252b5132 2892 bfd_vma relocation;
b34976b6 2893 bfd_boolean unresolved_reloc;
252b5132 2894 bfd_reloc_status_type r;
1b452ec6 2895 unsigned int indx;
13ae64f3 2896 int tls_type;
252b5132
RH		 2897
2898 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 2899 if (r_type == R_386_GNU_VTINHERIT
2900 || r_type == R_386_GNU_VTENTRY)
252b5132 2901 continue;
dc47f327 2902
55fd94b0 2903 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 2904 && ((indx = r_type - R_386_ext_offset) - R_386_standard
2905 >= R_386_ext - R_386_standard)
2906 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 2907 >= R_386_irelative - R_386_ext))
252b5132 2908 {
6ba842b6 2909 (*_bfd_error_handler)
d003868e
AM		 2910 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
2911 input_bfd, input_section, r_type);
252b5132 2912 bfd_set_error (bfd_error_bad_value);
b34976b6 2913 return FALSE;
252b5132 2914 }
1b452ec6 2915 howto = elf_howto_table + indx;
252b5132
RH		 2916
2917 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 2918 h = NULL;
2919 sym = NULL;
2920 sec = NULL;
b34976b6 2921 unresolved_reloc = FALSE;
252b5132
RH		 2922 if (r_symndx < symtab_hdr->sh_info)
2923 {
2924 sym = local_syms + r_symndx;
2925 sec = local_sections[r_symndx];
2926 relocation = (sec->output_section->vma
2927 + sec->output_offset
2928 + sym->st_value);
ab96bf03
AM		 2929
2930 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
2931 && ((sec->flags & SEC_MERGE) != 0
2932 || (info->relocatable
2933 && sec->output_offset != 0)))
f8df10f4 2934 {
f8df10f4 2935 bfd_vma addend;
4a335f3d 2936 bfd_byte *where = contents + rel->r_offset;
f8df10f4 2937
4a335f3d 2938 switch (howto->size)
f8df10f4 2939 {
4a335f3d
AM		 2940 case 0:
2941 addend = bfd_get_8 (input_bfd, where);
2942 if (howto->pc_relative)
2943 {
2944 addend = (addend ^ 0x80) - 0x80;
2945 addend += 1;
2946 }
2947 break;
2948 case 1:
2949 addend = bfd_get_16 (input_bfd, where);
2950 if (howto->pc_relative)
2951 {
2952 addend = (addend ^ 0x8000) - 0x8000;
2953 addend += 2;
2954 }
2955 break;
2956 case 2:
2957 addend = bfd_get_32 (input_bfd, where);
2958 if (howto->pc_relative)
2959 {
2960 addend = (addend ^ 0x80000000) - 0x80000000;
2961 addend += 4;
2962 }
2963 break;
2964 default:
2965 abort ();
f8df10f4
JJ		 2966 }
2967
ab96bf03
AM		 2968 if (info->relocatable)
2969 addend += sec->output_offset;
2970 else
2971 {
2972 asection *msec = sec;
2973 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
2974 addend);
2975 addend -= relocation;
2976 addend += msec->output_section->vma + msec->output_offset;
2977 }
4a335f3d
AM		 2978
2979 switch (howto->size)
2980 {
2981 case 0:
16a10388 2982 /* FIXME: overflow checks. */
4a335f3d
AM		 2983 if (howto->pc_relative)
2984 addend -= 1;
2985 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 2986 break;
2987 case 1:
2988 if (howto->pc_relative)
2989 addend -= 2;
2990 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 2991 break;
2992 case 2:
2993 if (howto->pc_relative)
2994 addend -= 4;
2995 bfd_put_32 (input_bfd, addend, where);
2996 break;
2997 }
f8df10f4 2998 }
1f85278f
L		 2999 else if (!info->relocatable
3000 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3001 {
3002 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3003 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3004 FALSE);
c25bc9fc
L		 3005 if (h == NULL)
3006 abort ();
3007
3008 /* Set STT_GNU_IFUNC symbol value. */
3009 h->root.u.def.value = sym->st_value;
3010 h->root.u.def.section = sec;
3011 }
252b5132
RH		 3012 }
3013 else
3014 {
3d540e93 3015 bfd_boolean warned ATTRIBUTE_UNUSED;
ffb2e45b 3016
b2a8e766
AM		 3017 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3018 r_symndx, symtab_hdr, sym_hashes,
3019 h, sec, relocation,
3020 unresolved_reloc, warned);
252b5132
RH		 3021 }
3022
ab96bf03 3023 if (sec != NULL && elf_discarded_section (sec))
0672748a
L		 3024 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3025 rel, relend, howto, contents);
9635fe29 3026
ab96bf03
AM		 3027 if (info->relocatable)
3028 continue;
3029
cbe950e9
L		 3030 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3031 it here if it is defined in a non-shared object. */
3032 if (h != NULL
3033 && h->type == STT_GNU_IFUNC
3034 && h->def_regular)
3035 {
3036 asection *plt, *gotplt, *base_got;
3037 bfd_vma plt_index;
4c544807 3038 const char *name;
cbe950e9
L		 3039
3040 if ((input_section->flags & SEC_ALLOC) == 0
3041 || h->plt.offset == (bfd_vma) -1)
3042 abort ();
3043
3044 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3045 if (htab->elf.splt != NULL)
cbe950e9 3046 {
6de2ae4a
L		 3047 plt = htab->elf.splt;
3048 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3049 }
3050 else
3051 {
6de2ae4a
L		 3052 plt = htab->elf.iplt;
3053 gotplt = htab->elf.igotplt;
cbe950e9
L		 3054 }
3055
3056 relocation = (plt->output_section->vma
3057 + plt->output_offset + h->plt.offset);
3058
3059 switch (r_type)
3060 {
3061 default:
4c544807
L		 3062 if (h->root.root.string)
3063 name = h->root.root.string;
3064 else
3065 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3066 NULL);
cbe950e9
L		 3067 (*_bfd_error_handler)
3068 (_("%B: relocation %s against STT_GNU_IFUNC "
3069 "symbol `%s' isn't handled by %s"), input_bfd,
3070 elf_howto_table[r_type].name,
4c544807 3071 name, __FUNCTION__);
cbe950e9
L		 3072 bfd_set_error (bfd_error_bad_value);
3073 return FALSE;
3074
3075 case R_386_32:
710ab287
L		 3076 /* Generate dynamic relcoation only when there is a
3077 non-GOF reference in a shared object. */
3078 if (info->shared && h->non_got_ref)
3079 {
3080 Elf_Internal_Rela outrel;
3081 bfd_byte *loc;
3082 asection *sreloc;
3083 bfd_vma offset;
3084
c25bc9fc
L		 3085 /* Need a dynamic relocation to get the real function
3086 adddress. */
710ab287
L		 3087 offset = _bfd_elf_section_offset (output_bfd,
3088 info,
3089 input_section,
3090 rel->r_offset);
3091 if (offset == (bfd_vma) -1
3092 || offset == (bfd_vma) -2)
3093 abort ();
3094
3095 outrel.r_offset = (input_section->output_section->vma
3096 + input_section->output_offset
3097 + offset);
3098
3099 if (h->dynindx == -1
44c4ea11
L		 3100 || h->forced_local
3101 || info->executable)
710ab287
L		 3102 {
3103 /* This symbol is resolved locally. */
3104 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3105 bfd_put_32 (output_bfd,
3106 (h->root.u.def.value
3107 + h->root.u.def.section->output_section->vma
3108 + h->root.u.def.section->output_offset),
3109 contents + offset);
3110 }
3111 else
3112 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3113
6de2ae4a 3114 sreloc = htab->elf.irelifunc;
710ab287
L		 3115 loc = sreloc->contents;
3116 loc += (sreloc->reloc_count++
3117 * sizeof (Elf32_External_Rel));
3118 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3119
3120 /* If this reloc is against an external symbol, we
3121 do not want to fiddle with the addend. Otherwise,
3122 we need to include the symbol value so that it
3123 becomes an addend for the dynamic reloc. For an
3124 internal symbol, we have updated addend. */
3125 continue;
3126 }
3127
cbe950e9
L		 3128 case R_386_PC32:
3129 case R_386_PLT32:
3130 goto do_relocation;
3131
3132 case R_386_GOT32:
6de2ae4a 3133 base_got = htab->elf.sgot;
cbe950e9
L		 3134 off = h->got.offset;
3135
7afd84dc 3136 if (base_got == NULL)
cbe950e9
L		 3137 abort ();
3138
7afd84dc 3139 if (off == (bfd_vma) -1)
cbe950e9 3140 {
7afd84dc
L		 3141 /* We can't use h->got.offset here to save state, or
3142 even just remember the offset, as finish_dynamic_symbol
3143 would use that as offset into .got. */
6bbec505 3144
6de2ae4a 3145 if (htab->elf.splt != NULL)
7afd84dc
L		 3146 {
3147 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3148 off = (plt_index + 3) * 4;
6de2ae4a 3149 base_got = htab->elf.sgotplt;
7afd84dc 3150 }
cbe950e9
L		 3151 else
3152 {
7afd84dc
L		 3153 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
3154 off = plt_index * 4;
6de2ae4a 3155 base_got = htab->elf.igotplt;
7afd84dc
L		 3156 }
3157
3158 if (h->dynindx == -1
3159 || h->forced_local
3160 || info->symbolic)
3161 {
3162 /* This references the local defitionion. We must
3163 initialize this entry in the global offset table.
3164 Since the offset must always be a multiple of 8,
3165 we use the least significant bit to record
3166 whether we have initialized it already.
3167
3168 When doing a dynamic link, we create a .rela.got
3169 relocation entry to initialize the value. This
3170 is done in the finish_dynamic_symbol routine. */
3171 if ((off & 1) != 0)
3172 off &= ~1;
3173 else
3174 {
3175 bfd_put_32 (output_bfd, relocation,
3176 base_got->contents + off);
3177 h->got.offset |= 1;
3178 }
cbe950e9 3179 }
cbe950e9 3180
7afd84dc 3181 relocation = off;
cbe950e9 3182
7afd84dc 3183 /* Adjust for static executables. */
6de2ae4a 3184 if (htab->elf.splt == NULL)
7afd84dc
L		 3185 relocation += gotplt->output_offset;
3186 }
3187 else
0018b0a3
L		 3188 {
3189 relocation = (base_got->output_section->vma
3190 + base_got->output_offset + off
3191 - gotplt->output_section->vma
3192 - gotplt->output_offset);
3193 /* Adjust for static executables. */
6de2ae4a 3194 if (htab->elf.splt == NULL)
0018b0a3
L		 3195 relocation += gotplt->output_offset;
3196 }
3197
cbe950e9
L		 3198 goto do_relocation;
3199
3200 case R_386_GOTOFF:
3201 relocation -= (gotplt->output_section->vma
3202 + gotplt->output_offset);
3203 goto do_relocation;
3204 }
3205 }
3206
252b5132
RH		 3207 switch (r_type)
3208 {
3209 case R_386_GOT32:
3210 /* Relocation is to the entry for this symbol in the global
3211 offset table. */
6de2ae4a 3212 if (htab->elf.sgot == NULL)
ffb2e45b 3213 abort ();
252b5132
RH		 3214
3215 if (h != NULL)
3216 {
b34976b6 3217 bfd_boolean dyn;
252b5132
RH		 3218
3219 off = h->got.offset;
ebe50bae 3220 dyn = htab->elf.dynamic_sections_created;
26e41594 3221 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3222 || (info->shared
586119b3 3223 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3224 || (ELF_ST_VISIBILITY (h->other)
3225 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3226 {
3227 /* This is actually a static link, or it is a
3228 -Bsymbolic link and the symbol is defined
3229 locally, or the symbol was forced to be local
3230 because of a version file. We must initialize
3231 this entry in the global offset table. Since the
3232 offset must always be a multiple of 4, we use the
3233 least significant bit to record whether we have
3234 initialized it already.
3235
3236 When doing a dynamic link, we create a .rel.got
3237 relocation entry to initialize the value. This
3238 is done in the finish_dynamic_symbol routine. */
3239 if ((off & 1) != 0)
3240 off &= ~1;
3241 else
3242 {
3243 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3244 htab->elf.sgot->contents + off);
252b5132
RH		 3245 h->got.offset |= 1;
3246 }
3247 }
8c694914 3248 else
b34976b6 3249 unresolved_reloc = FALSE;
252b5132
RH		 3250 }
3251 else
3252 {
ffb2e45b
AM		 3253 if (local_got_offsets == NULL)
3254 abort ();
252b5132
RH		 3255
3256 off = local_got_offsets[r_symndx];
3257
3258 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3259 the least significant bit to record whether we have
3260 already generated the necessary reloc. */
252b5132
RH		 3261 if ((off & 1) != 0)
3262 off &= ~1;
3263 else
3264 {
6725bdbf 3265 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3266 htab->elf.sgot->contents + off);
252b5132
RH		 3267
3268 if (info->shared)
3269 {
947216bf
AM		 3270 asection *s;
3271 Elf_Internal_Rela outrel;
3272 bfd_byte *loc;
252b5132 3273
6de2ae4a 3274 s = htab->elf.srelgot;
947216bf 3275 if (s == NULL)
ffb2e45b 3276 abort ();
252b5132 3277
6de2ae4a
L		 3278 outrel.r_offset = (htab->elf.sgot->output_section->vma
3279 + htab->elf.sgot->output_offset
252b5132
RH		 3280 + off);
3281 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
947216bf
AM		 3282 loc = s->contents;
3283 loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3284 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 3285 }
3286
3287 local_got_offsets[r_symndx] |= 1;
3288 }
252b5132
RH		 3289 }
3290
ffb2e45b
AM		 3291 if (off >= (bfd_vma) -2)
3292 abort ();
3293
6de2ae4a
L		 3294 relocation = htab->elf.sgot->output_section->vma
3295 + htab->elf.sgot->output_offset + off
3296 - htab->elf.sgotplt->output_section->vma
3297 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3298 break;
3299
3300 case R_386_GOTOFF:
3301 /* Relocation is relative to the start of the global offset
3302 table. */
3303
90f487df
L		 3304 /* Check to make sure it isn't a protected function symbol
3305 for shared library since it may not be local when used
41bed6dd
L		 3306 as function address. We also need to make sure that a
3307 symbol is defined locally. */
3308 if (info->shared && h)
90f487df 3309 {
41bed6dd
L		 3310 if (!h->def_regular)
3311 {
3312 const char *v;
3313
3314 switch (ELF_ST_VISIBILITY (h->other))
3315 {
3316 case STV_HIDDEN:
3317 v = _("hidden symbol");
3318 break;
3319 case STV_INTERNAL:
3320 v = _("internal symbol");
3321 break;
3322 case STV_PROTECTED:
3323 v = _("protected symbol");
3324 break;
3325 default:
3326 v = _("symbol");
3327 break;
3328 }
3329
3330 (*_bfd_error_handler)
3331 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3332 input_bfd, v, h->root.root.string);
3333 bfd_set_error (bfd_error_bad_value);
3334 return FALSE;
3335 }
3336 else if (!info->executable
3337 && h->type == STT_FUNC
3338 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3339 {
3340 (*_bfd_error_handler)
3341 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3342 input_bfd, h->root.root.string);
3343 bfd_set_error (bfd_error_bad_value);
3344 return FALSE;
3345 }
90f487df
L		 3346 }
3347
8c37241b
JJ		 3348 /* Note that sgot is not involved in this
3349 calculation. We always want the start of .got.plt. If we
3350 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3351 permitted by the ABI, we might have to change this
3352 calculation. */
6de2ae4a
L		 3353 relocation -= htab->elf.sgotplt->output_section->vma
3354 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3355 break;
3356
3357 case R_386_GOTPC:
3358 /* Use global offset table as symbol value. */
6de2ae4a
L		 3359 relocation = htab->elf.sgotplt->output_section->vma
3360 + htab->elf.sgotplt->output_offset;
b34976b6 3361 unresolved_reloc = FALSE;
252b5132
RH		 3362 break;
3363
3364 case R_386_PLT32:
3365 /* Relocation is to the entry for this symbol in the
3366 procedure linkage table. */
3367
dd5724d5 3368 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3369 without using the procedure linkage table. */
252b5132
RH		 3370 if (h == NULL)
3371 break;
3372
dd5724d5 3373 if (h->plt.offset == (bfd_vma) -1
6de2ae4a 3374 || htab->elf.splt == NULL)
252b5132
RH		 3375 {
3376 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3377 happens when statically linking PIC code, or when
3378 using -Bsymbolic. */
252b5132
RH		 3379 break;
3380 }
3381
6de2ae4a
L		 3382 relocation = (htab->elf.splt->output_section->vma
3383 + htab->elf.splt->output_offset
252b5132 3384 + h->plt.offset);
b34976b6 3385 unresolved_reloc = FALSE;
252b5132
RH		 3386 break;
3387
3388 case R_386_32:
3389 case R_386_PC32:
3348747a
NS		 3390 if ((input_section->flags & SEC_ALLOC) == 0
3391 || is_vxworks_tls)
ec338859
AM		 3392 break;
3393
12d0ee4a 3394 if ((info->shared
ef5aade5
L		 3395 && (h == NULL
3396 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3397 || h->root.type != bfd_link_hash_undefweak)
12d0ee4a 3398 && (r_type != R_386_PC32
f6c52c13 3399 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3400 || (ELIMINATE_COPY_RELOCS
3401 && !info->shared
12d0ee4a
AM		 3402 && h != NULL
3403 && h->dynindx != -1
f5385ebf
AM		 3404 && !h->non_got_ref
3405 && ((h->def_dynamic
3406 && !h->def_regular)
28d0b90e 3407 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3408 || h->root.type == bfd_link_hash_undefined)))
252b5132 3409 {
947216bf
AM		 3410 Elf_Internal_Rela outrel;
3411 bfd_byte *loc;
b34976b6 3412 bfd_boolean skip, relocate;
0c715baa 3413 asection *sreloc;
252b5132
RH		 3414
3415 /* When generating a shared object, these relocations
3416 are copied into the output file to be resolved at run
3417 time. */
3418
b34976b6
AM		 3419 skip = FALSE;
3420 relocate = FALSE;
252b5132 3421
c629eae0
JJ		 3422 outrel.r_offset =
3423 _bfd_elf_section_offset (output_bfd, info, input_section,
3424 rel->r_offset);
3425 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3426 skip = TRUE;
0bb2d96a 3427 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3428 skip = TRUE, relocate = TRUE;
252b5132
RH		 3429 outrel.r_offset += (input_section->output_section->vma
3430 + input_section->output_offset);
3431
3432 if (skip)
0bb2d96a 3433 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3434 else if (h != NULL
3435 && h->dynindx != -1
3436 && (r_type == R_386_PC32
3437 || !info->shared
55255dae 3438 || !SYMBOLIC_BIND (info, h)
f5385ebf 3439 || !h->def_regular))
0bb2d96a 3440 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3441 else
3442 {
5a15f56f 3443 /* This symbol is local, or marked to become local. */
b34976b6 3444 relocate = TRUE;
5a15f56f 3445 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3446 }
3447
cbe950e9 3448 sreloc = elf_section_data (input_section)->sreloc;
e7c33416
NC		 3449
3450 BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
0c715baa 3451
947216bf
AM		 3452 loc = sreloc->contents;
3453 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
e7c33416 3454
0c715baa 3455 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 3456
3457 /* If this reloc is against an external symbol, we do
3458 not want to fiddle with the addend. Otherwise, we
3459 need to include the symbol value so that it becomes
3460 an addend for the dynamic reloc. */
0f88be7a 3461 if (! relocate)
252b5132
RH		 3462 continue;
3463 }
252b5132
RH		 3464 break;
3465
37e55690 3466 case R_386_TLS_IE:
1d85728f 3467 if (!info->executable)
37e55690 3468 {
947216bf
AM		 3469 Elf_Internal_Rela outrel;
3470 bfd_byte *loc;
37e55690 3471 asection *sreloc;
37e55690
JJ		 3472
3473 outrel.r_offset = rel->r_offset
3474 + input_section->output_section->vma
3475 + input_section->output_offset;
3476 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3477 sreloc = elf_section_data (input_section)->sreloc;
3478 if (sreloc == NULL)
3479 abort ();
947216bf
AM		 3480 loc = sreloc->contents;
3481 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 3482 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3483 }
3484 /* Fall through */
3485
13ae64f3 3486 case R_386_TLS_GD:
67a4f2b7
AO		 3487 case R_386_TLS_GOTDESC:
3488 case R_386_TLS_DESC_CALL:
13ae64f3 3489 case R_386_TLS_IE_32:
37e55690 3490 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3491 tls_type = GOT_UNKNOWN;
3492 if (h == NULL && local_got_offsets)
3493 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3494 else if (h != NULL)
142411ca 3495 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3496 if (tls_type == GOT_TLS_IE)
3497 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3498
3499 if (! elf_i386_tls_transition (info, input_bfd,
3500 input_section, contents,
3501 symtab_hdr, sym_hashes,
3502 &r_type, tls_type, rel,
4c544807 3503 relend, h, r_symndx))
142411ca 3504 return FALSE;
13ae64f3
JJ		 3505
3506 if (r_type == R_386_TLS_LE_32)
3507 {
82e51918 3508 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3509 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3510 {
142411ca 3511 unsigned int type;
13ae64f3
JJ		 3512 bfd_vma roff;
3513
3514 /* GD->LE transition. */
13ae64f3 3515 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3516 if (type == 0x04)
3517 {
3518 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3519 Change it into:
3520 movl %gs:0, %eax; subl $foo@tpoff, %eax
3521 (6 byte form of subl). */
13ae64f3
JJ		 3522 memcpy (contents + rel->r_offset - 3,
3523 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3524 roff = rel->r_offset + 5;
13ae64f3
JJ		 3525 }
3526 else
3527 {
142411ca
L		 3528 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3529 Change it into:
3530 movl %gs:0, %eax; subl $foo@tpoff, %eax
3531 (6 byte form of subl). */
3532 memcpy (contents + rel->r_offset - 2,
3533 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3534 roff = rel->r_offset + 6;
13ae64f3 3535 }
eb4ff4d6 3536 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3537 contents + roff);
a3fadc9a 3538 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 3539 rel++;
3540 continue;
3541 }
67a4f2b7
AO		 3542 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3543 {
3544 /* GDesc -> LE transition.
3545 It's originally something like:
3546 leal x@tlsdesc(%ebx), %eax
3547
3548 leal x@ntpoff, %eax
3549
3550 Registers other than %eax may be set up here. */
3551
142411ca 3552 unsigned int val;
67a4f2b7
AO		 3553 bfd_vma roff;
3554
67a4f2b7 3555 roff = rel->r_offset;
67a4f2b7 3556 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3557
3558 /* Now modify the instruction as appropriate. */
3559 /* aoliva FIXME: remove the above and xor the byte
3560 below with 0x86. */
3561 bfd_put_8 (output_bfd, val ^ 0x86,
3562 contents + roff - 1);
eb4ff4d6 3563 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 3564 contents + roff);
3565 continue;
3566 }
3567 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3568 {
3569 /* GDesc -> LE transition.
3570 It's originally:
3571 call *(%eax)
3572 Turn it into:
142411ca 3573 xchg %ax,%ax */
67a4f2b7 3574
67a4f2b7 3575 bfd_vma roff;
6bbec505 3576
67a4f2b7 3577 roff = rel->r_offset;
10efb593 3578 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3579 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3580 continue;
3581 }
37e55690 3582 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 3583 {
142411ca 3584 unsigned int val;
13ae64f3
JJ		 3585
3586 /* IE->LE transition:
37e55690
JJ		 3587 Originally it can be one of:
3588 movl foo, %eax
3589 movl foo, %reg
3590 addl foo, %reg
3591 We change it into:
3592 movl $foo, %eax
3593 movl $foo, %reg
3594 addl $foo, %reg. */
37e55690 3595 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 3596 if (val == 0xa1)
3597 {
3598 /* movl foo, %eax. */
55fd94b0
AM		 3599 bfd_put_8 (output_bfd, 0xb8,
3600 contents + rel->r_offset - 1);
37e55690 3601 }
299bf759 3602 else
37e55690 3603 {
142411ca
L		 3604 unsigned int type;
3605
55fd94b0
AM		 3606 type = bfd_get_8 (input_bfd,
3607 contents + rel->r_offset - 2);
299bf759 3608 switch (type)
26e41594 3609 {
299bf759
L		 3610 case 0x8b:
3611 /* movl */
299bf759
L		 3612 bfd_put_8 (output_bfd, 0xc7,
3613 contents + rel->r_offset - 2);
3614 bfd_put_8 (output_bfd,
3615 0xc0 | ((val >> 3) & 7),
3616 contents + rel->r_offset - 1);
3617 break;
3618 case 0x03:
3619 /* addl */
299bf759
L		 3620 bfd_put_8 (output_bfd, 0x81,
3621 contents + rel->r_offset - 2);
3622 bfd_put_8 (output_bfd,
3623 0xc0 | ((val >> 3) & 7),
3624 contents + rel->r_offset - 1);
3625 break;
3626 default:
3627 BFD_FAIL ();
3628 break;
26e41594 3629 }
37e55690 3630 }
eb4ff4d6 3631 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3632 contents + rel->r_offset);
3633 continue;
3634 }
3635 else
3636 {
3637 unsigned int val, type;
3638
3639 /* {IE_32,GOTIE}->LE transition:
3640 Originally it can be one of:
13ae64f3 3641 subl foo(%reg1), %reg2
13ae64f3 3642 movl foo(%reg1), %reg2
37e55690 3643 addl foo(%reg1), %reg2
13ae64f3
JJ		 3644 We change it into:
3645 subl $foo, %reg2
37e55690
JJ		 3646 movl $foo, %reg2 (6 byte form)
3647 addl $foo, %reg2. */
13ae64f3
JJ		 3648 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3649 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 3650 if (type == 0x8b)
3651 {
3652 /* movl */
13ae64f3
JJ		 3653 bfd_put_8 (output_bfd, 0xc7,
3654 contents + rel->r_offset - 2);
3655 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3656 contents + rel->r_offset - 1);
3657 }
3658 else if (type == 0x2b)
3659 {
3660 /* subl */
13ae64f3
JJ		 3661 bfd_put_8 (output_bfd, 0x81,
3662 contents + rel->r_offset - 2);
3663 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3664 contents + rel->r_offset - 1);
3665 }
37e55690
JJ		 3666 else if (type == 0x03)
3667 {
3668 /* addl */
3669 bfd_put_8 (output_bfd, 0x81,
3670 contents + rel->r_offset - 2);
3671 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3672 contents + rel->r_offset - 1);
3673 }
13ae64f3
JJ		 3674 else
3675 BFD_FAIL ();
37e55690 3676 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 3677 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3678 contents + rel->r_offset);
3679 else
eb4ff4d6 3680 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 3681 contents + rel->r_offset);
13ae64f3
JJ		 3682 continue;
3683 }
3684 }
3685
6de2ae4a 3686 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 3687 abort ();
3688
3689 if (h != NULL)
67a4f2b7
AO		 3690 {
3691 off = h->got.offset;
3692 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
3693 }
13ae64f3
JJ		 3694 else
3695 {
3696 if (local_got_offsets == NULL)
3697 abort ();
3698
3699 off = local_got_offsets[r_symndx];
67a4f2b7 3700 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 3701 }
3702
3703 if ((off & 1) != 0)
3704 off &= ~1;
26e41594 3705 else
13ae64f3 3706 {
947216bf
AM		 3707 Elf_Internal_Rela outrel;
3708 bfd_byte *loc;
91d6fa6a 3709 int dr_type;
67a4f2b7 3710 asection *sreloc;
13ae64f3 3711
6de2ae4a 3712 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 3713 abort ();
3714
67a4f2b7
AO		 3715 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3716
3717 if (GOT_TLS_GDESC_P (tls_type))
3718 {
3719 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
3720 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 3721 <= htab->elf.sgotplt->size);
3722 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3723 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3724 + offplt
3725 + htab->sgotplt_jump_table_size);
6de2ae4a 3726 sreloc = htab->elf.srelplt;
67a4f2b7 3727 loc = sreloc->contents;
5ae0bfb6
RS		 3728 loc += (htab->next_tls_desc_index++
3729 * sizeof (Elf32_External_Rel));
67a4f2b7
AO		 3730 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3731 <= sreloc->contents + sreloc->size);
3732 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3733 if (indx == 0)
3734 {
3735 BFD_ASSERT (! unresolved_reloc);
3736 bfd_put_32 (output_bfd,
eb4ff4d6 3737 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 3738 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 3739 + htab->sgotplt_jump_table_size + 4);
3740 }
3741 else
3742 {
3743 bfd_put_32 (output_bfd, 0,
6de2ae4a 3744 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 3745 + htab->sgotplt_jump_table_size + 4);
3746 }
3747 }
3748
6de2ae4a 3749 sreloc = htab->elf.srelgot;
67a4f2b7 3750
6de2ae4a
L		 3751 outrel.r_offset = (htab->elf.sgot->output_section->vma
3752 + htab->elf.sgot->output_offset + off);
13ae64f3 3753
67a4f2b7 3754 if (GOT_TLS_GD_P (tls_type))
13ae64f3 3755 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 3756 else if (GOT_TLS_GDESC_P (tls_type))
3757 goto dr_done;
37e55690
JJ		 3758 else if (tls_type == GOT_TLS_IE_POS)
3759 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 3760 else
3761 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 3762
37e55690 3763 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 3764 bfd_put_32 (output_bfd,
3765 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 3766 htab->elf.sgot->contents + off);
37e55690 3767 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
eb4ff4d6
L		 3768 bfd_put_32 (output_bfd,
3769 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 3770 htab->elf.sgot->contents + off);
67a4f2b7 3771 else if (dr_type != R_386_TLS_DESC)
c366c25e 3772 bfd_put_32 (output_bfd, 0,
6de2ae4a 3773 htab->elf.sgot->contents + off);
13ae64f3 3774 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7
AO		 3775
3776 loc = sreloc->contents;
3777 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3778 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3779 <= sreloc->contents + sreloc->size);
13ae64f3
JJ		 3780 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3781
67a4f2b7 3782 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 3783 {
3784 if (indx == 0)
3785 {
82e51918 3786 BFD_ASSERT (! unresolved_reloc);
13ae64f3 3787 bfd_put_32 (output_bfd,
eb4ff4d6 3788 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 3789 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 3790 }
3791 else
3792 {
3793 bfd_put_32 (output_bfd, 0,
6de2ae4a 3794 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 3795 outrel.r_info = ELF32_R_INFO (indx,
3796 R_386_TLS_DTPOFF32);
3797 outrel.r_offset += 4;
67a4f2b7 3798 sreloc->reloc_count++;
947216bf 3799 loc += sizeof (Elf32_External_Rel);
67a4f2b7
AO		 3800 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3801 <= sreloc->contents + sreloc->size);
947216bf 3802 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
13ae64f3
JJ		 3803 }
3804 }
37e55690
JJ		 3805 else if (tls_type == GOT_TLS_IE_BOTH)
3806 {
3807 bfd_put_32 (output_bfd,
eb4ff4d6
L		 3808 (indx == 0
3809 ? relocation - elf_i386_dtpoff_base (info)
3810 : 0),
6de2ae4a 3811 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 3812 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3813 outrel.r_offset += 4;
67a4f2b7 3814 sreloc->reloc_count++;
947216bf 3815 loc += sizeof (Elf32_External_Rel);
37e55690
JJ		 3816 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3817 }
13ae64f3 3818
67a4f2b7 3819 dr_done:
13ae64f3
JJ		 3820 if (h != NULL)
3821 h->got.offset |= 1;
3822 else
3823 local_got_offsets[r_symndx] |= 1;
3824 }
3825
67a4f2b7
AO		 3826 if (off >= (bfd_vma) -2
3827 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 3828 abort ();
67a4f2b7
AO		 3829 if (r_type == R_386_TLS_GOTDESC
3830 || r_type == R_386_TLS_DESC_CALL)
3831 {
3832 relocation = htab->sgotplt_jump_table_size + offplt;
3833 unresolved_reloc = FALSE;
3834 }
3835 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 3836 {
6de2ae4a
L		 3837 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
3838 + htab->elf.sgotplt->output_offset;
3839 relocation = htab->elf.sgot->output_section->vma
3840 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 3841 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
3842 && tls_type == GOT_TLS_IE_BOTH)
3843 relocation += 4;
3844 if (r_type == R_386_TLS_IE)
8c37241b 3845 relocation += g_o_t;
b34976b6 3846 unresolved_reloc = FALSE;
13ae64f3 3847 }
67a4f2b7 3848 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 3849 {
3850 unsigned int val, type;
3851 bfd_vma roff;
3852
3853 /* GD->IE transition. */
13ae64f3 3854 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3855 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3856 if (type == 0x04)
3857 {
3858 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3859 Change it into:
3860 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 3861 val >>= 3;
142411ca 3862 roff = rel->r_offset - 3;
13ae64f3
JJ		 3863 }
3864 else
3865 {
3866 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3867 Change it into:
3868 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 3869 roff = rel->r_offset - 2;
3870 }
3871 memcpy (contents + roff,
3872 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
3873 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 3874 /* If foo is used only with foo@gotntpoff(%reg) and
3875 foo@indntpoff, but not with foo@gottpoff(%reg), change
3876 subl $foo@gottpoff(%reg), %eax
3877 into:
3878 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 3879 if (tls_type == GOT_TLS_IE_POS)
3880 contents[roff + 6] = 0x03;
8c37241b 3881 bfd_put_32 (output_bfd,
6de2ae4a
L		 3882 htab->elf.sgot->output_section->vma
3883 + htab->elf.sgot->output_offset + off
3884 - htab->elf.sgotplt->output_section->vma
3885 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 3886 contents + roff + 8);
3887 /* Skip R_386_PLT32. */
3888 rel++;
3889 continue;
3890 }
67a4f2b7
AO		 3891 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3892 {
3893 /* GDesc -> IE transition.
3894 It's originally something like:
3895 leal x@tlsdesc(%ebx), %eax
3896
3897 Change it to:
142411ca 3898 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 3899 or:
3900 movl x@gottpoff(%ebx), %eax # before negl %eax
3901
3902 Registers other than %eax may be set up here. */
3903
67a4f2b7
AO		 3904 bfd_vma roff;
3905
3906 /* First, make sure it's a leal adding ebx to a 32-bit
3907 offset into any register, although it's probably
3908 almost always going to be eax. */
3909 roff = rel->r_offset;
67a4f2b7
AO		 3910
3911 /* Now modify the instruction as appropriate. */
3912 /* To turn a leal into a movl in the form we use it, it
3913 suffices to change the first byte from 0x8d to 0x8b.
3914 aoliva FIXME: should we decide to keep the leal, all
3915 we have to do is remove the statement below, and
3916 adjust the relaxation of R_386_TLS_DESC_CALL. */
3917 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3918
3919 if (tls_type == GOT_TLS_IE_BOTH)
3920 off += 4;
3921
3922 bfd_put_32 (output_bfd,
6de2ae4a
L		 3923 htab->elf.sgot->output_section->vma
3924 + htab->elf.sgot->output_offset + off
3925 - htab->elf.sgotplt->output_section->vma
3926 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 3927 contents + roff);
3928 continue;
3929 }
3930 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3931 {
3932 /* GDesc -> IE transition.
3933 It's originally:
3934 call *(%eax)
3935
3936 Change it to:
142411ca 3937 xchg %ax,%ax
67a4f2b7
AO		 3938 or
3939 negl %eax
3940 depending on how we transformed the TLS_GOTDESC above.
3941 */
3942
67a4f2b7
AO		 3943 bfd_vma roff;
3944
67a4f2b7 3945 roff = rel->r_offset;
67a4f2b7
AO		 3946
3947 /* Now modify the instruction as appropriate. */
3948 if (tls_type != GOT_TLS_IE_NEG)
3949 {
10efb593
L		 3950 /* xchg %ax,%ax */
3951 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3952 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3953 }
3954 else
3955 {
3956 /* negl %eax */
3957 bfd_put_8 (output_bfd, 0xf7, contents + roff);
3958 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
3959 }
3960
3961 continue;
3962 }
3963 else
3964 BFD_ASSERT (FALSE);
13ae64f3
JJ		 3965 break;
3966
3967 case R_386_TLS_LDM:
142411ca
L		 3968 if (! elf_i386_tls_transition (info, input_bfd,
3969 input_section, contents,
3970 symtab_hdr, sym_hashes,
3971 &r_type, GOT_UNKNOWN, rel,
4c544807 3972 relend, h, r_symndx))
142411ca 3973 return FALSE;
13ae64f3 3974
142411ca
L		 3975 if (r_type != R_386_TLS_LDM)
3976 {
13ae64f3 3977 /* LD->LE transition:
13ae64f3
JJ		 3978 leal foo(%reg), %eax; call ___tls_get_addr.
3979 We change it into:
3980 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 3981 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 3982 memcpy (contents + rel->r_offset - 2,
3983 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 3984 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 3985 rel++;
3986 continue;
3987 }
3988
6de2ae4a 3989 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 3990 abort ();
3991
3992 off = htab->tls_ldm_got.offset;
3993 if (off & 1)
3994 off &= ~1;
3995 else
3996 {
947216bf
AM		 3997 Elf_Internal_Rela outrel;
3998 bfd_byte *loc;
13ae64f3 3999
6de2ae4a 4000 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4001 abort ();
4002
6de2ae4a
L		 4003 outrel.r_offset = (htab->elf.sgot->output_section->vma
4004 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4005
4006 bfd_put_32 (output_bfd, 0,
6de2ae4a 4007 htab->elf.sgot->contents + off);
13ae64f3 4008 bfd_put_32 (output_bfd, 0,
6de2ae4a 4009 htab->elf.sgot->contents + off + 4);
13ae64f3 4010 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
6de2ae4a
L		 4011 loc = htab->elf.srelgot->contents;
4012 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
13ae64f3
JJ		 4013 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4014 htab->tls_ldm_got.offset |= 1;
4015 }
6de2ae4a
L		 4016 relocation = htab->elf.sgot->output_section->vma
4017 + htab->elf.sgot->output_offset + off
4018 - htab->elf.sgotplt->output_section->vma
4019 - htab->elf.sgotplt->output_offset;
b34976b6 4020 unresolved_reloc = FALSE;
13ae64f3
JJ		 4021 break;
4022
4023 case R_386_TLS_LDO_32:
a45bb67d 4024 if (info->shared || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4025 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4026 else
4027 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4028 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4029 break;
4030
4031 case R_386_TLS_LE_32:
13ae64f3 4032 case R_386_TLS_LE:
1d85728f 4033 if (!info->executable)
37e55690 4034 {
947216bf 4035 Elf_Internal_Rela outrel;
37e55690 4036 asection *sreloc;
947216bf 4037 bfd_byte *loc;
37e55690
JJ		 4038
4039 outrel.r_offset = rel->r_offset
4040 + input_section->output_section->vma
4041 + input_section->output_offset;
4042 if (h != NULL && h->dynindx != -1)
4043 indx = h->dynindx;
4044 else
4045 indx = 0;
4046 if (r_type == R_386_TLS_LE_32)
4047 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4048 else
4049 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4050 sreloc = elf_section_data (input_section)->sreloc;
4051 if (sreloc == NULL)
4052 abort ();
947216bf
AM		 4053 loc = sreloc->contents;
4054 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 4055 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4056 if (indx)
4057 continue;
4058 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4059 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4060 else
eb4ff4d6 4061 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4062 }
4063 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4064 relocation = elf_i386_tpoff (info, relocation);
37e55690 4065 else
eb4ff4d6 4066 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4067 break;
4068
252b5132
RH		 4069 default:
4070 break;
4071 }
4072
239e1f3a
AM		 4073 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4074 because such sections are not SEC_ALLOC and thus ld.so will
4075 not process them. */
8c694914 4076 if (unresolved_reloc
239e1f3a 4077 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 4078 && h->def_dynamic))
6a30718d
JJ		 4079 {
4080 (*_bfd_error_handler)
843fe662 4081 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4082 input_bfd,
4083 input_section,
6a30718d 4084 (long) rel->r_offset,
843fe662 4085 howto->name,
6a30718d 4086 h->root.root.string);
b34976b6 4087 return FALSE;
6a30718d 4088 }
83be169b 4089
cbe950e9 4090do_relocation:
252b5132
RH		 4091 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4092 contents, rel->r_offset,
55fd94b0 4093 relocation, 0);
252b5132 4094
cf5c0c5b 4095 if (r != bfd_reloc_ok)
252b5132 4096 {
cf5c0c5b 4097 const char *name;
ffb2e45b 4098
cf5c0c5b
AM		 4099 if (h != NULL)
4100 name = h->root.root.string;
4101 else
4102 {
4103 name = bfd_elf_string_from_elf_section (input_bfd,
4104 symtab_hdr->sh_link,
4105 sym->st_name);
4106 if (name == NULL)
b34976b6 4107 return FALSE;
cf5c0c5b
AM		 4108 if (*name == '\0')
4109 name = bfd_section_name (input_bfd, sec);
4110 }
ffb2e45b 4111
cf5c0c5b
AM		 4112 if (r == bfd_reloc_overflow)
4113 {
cf5c0c5b 4114 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4115 (info, (h ? &h->root : NULL), name, howto->name,
4116 (bfd_vma) 0, input_bfd, input_section,
4117 rel->r_offset)))
b34976b6 4118 return FALSE;
cf5c0c5b
AM		 4119 }
4120 else
4121 {
4122 (*_bfd_error_handler)
d003868e
AM		 4123 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4124 input_bfd, input_section,
cf5c0c5b 4125 (long) rel->r_offset, name, (int) r);
b34976b6 4126 return FALSE;
cf5c0c5b 4127 }
252b5132
RH		 4128 }
4129 }
4130
b34976b6 4131 return TRUE;
252b5132
RH		 4132}
4133
4134/* Finish up dynamic symbol handling. We set the contents of various
4135 dynamic sections here. */
4136
b34976b6 4137static bfd_boolean
55fd94b0
AM		 4138elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4139 struct bfd_link_info *info,
4140 struct elf_link_hash_entry *h,
4141 Elf_Internal_Sym *sym)
252b5132 4142{
6725bdbf 4143 struct elf_i386_link_hash_table *htab;
252b5132 4144
6725bdbf 4145 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4146 if (htab == NULL)
4147 return FALSE;
252b5132
RH		 4148
4149 if (h->plt.offset != (bfd_vma) -1)
4150 {
252b5132
RH		 4151 bfd_vma plt_index;
4152 bfd_vma got_offset;
947216bf
AM		 4153 Elf_Internal_Rela rel;
4154 bfd_byte *loc;
cbe950e9
L		 4155 asection *plt, *gotplt, *relplt;
4156
4157 /* When building a static executable, use .iplt, .igot.plt and
4158 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4159 if (htab->elf.splt != NULL)
cbe950e9 4160 {
6de2ae4a
L		 4161 plt = htab->elf.splt;
4162 gotplt = htab->elf.sgotplt;
4163 relplt = htab->elf.srelplt;
cbe950e9
L		 4164 }
4165 else
4166 {
6de2ae4a
L		 4167 plt = htab->elf.iplt;
4168 gotplt = htab->elf.igotplt;
4169 relplt = htab->elf.irelplt;
cbe950e9 4170 }
252b5132
RH		 4171
4172 /* This symbol has an entry in the procedure linkage table. Set
4173 it up. */
4174
cbe950e9
L		 4175 if ((h->dynindx == -1
4176 && !((h->forced_local || info->executable)
4177 && h->def_regular
4178 && h->type == STT_GNU_IFUNC))
4179 || plt == NULL
4180 || gotplt == NULL
4181 || relplt == NULL)
ffb2e45b 4182 abort ();
252b5132
RH		 4183
4184 /* Get the index in the procedure linkage table which
4185 corresponds to this symbol. This is the index of this symbol
4186 in all the symbols for which we are making plt entries. The
cbe950e9 4187 first entry in the procedure linkage table is reserved.
252b5132 4188
cbe950e9 4189 Get the offset into the .got table of the entry that
252b5132 4190 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4191 The first three are reserved.
6bbec505 4192
cbe950e9
L		 4193 For static executables, we don't reserve anything. */
4194
6de2ae4a 4195 if (plt == htab->elf.splt)
cbe950e9
L		 4196 {
4197 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
4198 got_offset = (plt_index + 3) * 4;
4199 }
4200 else
4201 {
4202 plt_index = h->plt.offset / PLT_ENTRY_SIZE;
4203 got_offset = plt_index * 4;
4204 }
252b5132
RH		 4205
4206 /* Fill in the entry in the procedure linkage table. */
4207 if (! info->shared)
4208 {
cbe950e9 4209 memcpy (plt->contents + h->plt.offset, elf_i386_plt_entry,
252b5132
RH		 4210 PLT_ENTRY_SIZE);
4211 bfd_put_32 (output_bfd,
cbe950e9
L		 4212 (gotplt->output_section->vma
4213 + gotplt->output_offset
252b5132 4214 + got_offset),
cbe950e9 4215 plt->contents + h->plt.offset + 2);
eac338cf
PB		 4216
4217 if (htab->is_vxworks)
4218 {
4219 int s, k, reloc_index;
4220
4221 /* Create the R_386_32 relocation referencing the GOT
4222 for this PLT entry. */
4223
4224 /* S: Current slot number (zero-based). */
4225 s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE;
4226 /* K: Number of relocations for PLTResolve. */
4227 if (info->shared)
4228 k = PLTRESOLVE_RELOCS_SHLIB;
4229 else
4230 k = PLTRESOLVE_RELOCS;
4231 /* Skip the PLTresolve relocations, and the relocations for
4232 the other PLT slots. */
4233 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4234 loc = (htab->srelplt2->contents + reloc_index
4235 * sizeof (Elf32_External_Rel));
4236
6de2ae4a
L		 4237 rel.r_offset = (htab->elf.splt->output_section->vma
4238 + htab->elf.splt->output_offset
eac338cf 4239 + h->plt.offset + 2),
7325306f 4240 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4241 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4242
4243 /* Create the R_386_32 relocation referencing the beginning of
4244 the PLT for this GOT entry. */
6de2ae4a
L		 4245 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4246 + htab->elf.sgotplt->output_offset
eac338cf 4247 + got_offset);
7325306f 4248 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4249 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4250 loc + sizeof (Elf32_External_Rel));
4251 }
252b5132
RH		 4252 }
4253 else
4254 {
cbe950e9 4255 memcpy (plt->contents + h->plt.offset, elf_i386_pic_plt_entry,
252b5132
RH		 4256 PLT_ENTRY_SIZE);
4257 bfd_put_32 (output_bfd, got_offset,
cbe950e9 4258 plt->contents + h->plt.offset + 2);
252b5132
RH		 4259 }
4260
cbe950e9 4261 /* Don't fill PLT entry for static executables. */
6de2ae4a 4262 if (plt == htab->elf.splt)
cbe950e9
L		 4263 {
4264 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4265 plt->contents + h->plt.offset + 7);
4266 bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
4267 plt->contents + h->plt.offset + 12);
4268 }
252b5132
RH		 4269
4270 /* Fill in the entry in the global offset table. */
4271 bfd_put_32 (output_bfd,
cbe950e9
L		 4272 (plt->output_section->vma
4273 + plt->output_offset
252b5132
RH		 4274 + h->plt.offset
4275 + 6),
cbe950e9 4276 gotplt->contents + got_offset);
252b5132
RH		 4277
4278 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4279 rel.r_offset = (gotplt->output_section->vma
4280 + gotplt->output_offset
252b5132 4281 + got_offset);
cbe950e9
L		 4282 if (h->dynindx == -1
4283 || ((info->executable
4284 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4285 && h->def_regular
4286 && h->type == STT_GNU_IFUNC))
4287 {
4288 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4289 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4290 in the .got.plt section. */
4291 bfd_put_32 (output_bfd,
4292 (h->root.u.def.value
4293 + h->root.u.def.section->output_section->vma
4294 + h->root.u.def.section->output_offset),
4295 gotplt->contents + got_offset);
4296 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
4297 }
4298 else
4299 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4300 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4301 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4302
f5385ebf 4303 if (!h->def_regular)
252b5132
RH		 4304 {
4305 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 4306 the .plt section. Leave the value if there were any
4307 relocations where pointer equality matters (this is a clue
51b64d56
AM		 4308 for the dynamic linker, to make function pointer
4309 comparisons work between an application and shared
c6585bbb
JJ		 4310 library), otherwise set it to zero. If a function is only
4311 called from a binary, there is no need to slow down
4312 shared libraries because of that. */
252b5132 4313 sym->st_shndx = SHN_UNDEF;
f5385ebf 4314 if (!h->pointer_equality_needed)
c6585bbb 4315 sym->st_value = 0;
252b5132
RH		 4316 }
4317 }
4318
13ae64f3 4319 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4320 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4321 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4322 {
947216bf
AM		 4323 Elf_Internal_Rela rel;
4324 bfd_byte *loc;
252b5132
RH		 4325
4326 /* This symbol has an entry in the global offset table. Set it
4327 up. */
4328
6de2ae4a 4329 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4330 abort ();
252b5132 4331
6de2ae4a
L		 4332 rel.r_offset = (htab->elf.sgot->output_section->vma
4333 + htab->elf.sgot->output_offset
dc810e39 4334 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4335
dd5724d5
AM		 4336 /* If this is a static link, or it is a -Bsymbolic link and the
4337 symbol is defined locally or was forced to be local because
4338 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4339 The entry in the global offset table will already have been
4340 initialized in the relocate_section function. */
710ab287 4341 if (h->def_regular
0018b0a3
L		 4342 && h->type == STT_GNU_IFUNC)
4343 {
710ab287
L		 4344 if (info->shared)
4345 {
4346 /* Generate R_386_GLOB_DAT. */
4347 goto do_glob_dat;
4348 }
4349 else
4350 {
cd2b2c10
L		 4351 asection *plt;
4352
710ab287
L		 4353 if (!h->pointer_equality_needed)
4354 abort ();
4355
4356 /* For non-shared object, we can't use .got.plt, which
4357 contains the real function addres if we need pointer
4358 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4359 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4360 bfd_put_32 (output_bfd,
4361 (plt->output_section->vma
4362 + plt->output_offset + h->plt.offset),
6de2ae4a 4363 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4364 return TRUE;
4365 }
0018b0a3
L		 4366 }
4367 else if (info->shared
4368 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4369 {
6725bdbf 4370 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4371 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4372 }
252b5132
RH		 4373 else
4374 {
dd5724d5 4375 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4376do_glob_dat:
6725bdbf 4377 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4378 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4379 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4380 }
4381
6de2ae4a
L		 4382 loc = htab->elf.srelgot->contents;
4383 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 4384 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 4385 }
4386
f5385ebf 4387 if (h->needs_copy)
252b5132 4388 {
947216bf
AM		 4389 Elf_Internal_Rela rel;
4390 bfd_byte *loc;
252b5132
RH		 4391
4392 /* This symbol needs a copy reloc. Set it up. */
4393
ffb2e45b
AM		 4394 if (h->dynindx == -1
4395 || (h->root.type != bfd_link_hash_defined
4396 && h->root.type != bfd_link_hash_defweak)
4397 || htab->srelbss == NULL)
4398 abort ();
252b5132
RH		 4399
4400 rel.r_offset = (h->root.u.def.value
4401 + h->root.u.def.section->output_section->vma
4402 + h->root.u.def.section->output_offset);
4403 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
947216bf
AM		 4404 loc = htab->srelbss->contents;
4405 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 4406 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 4407 }
4408
c25bc9fc
L		 4409 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
4410 be NULL for local symbols.
4411
eac338cf
PB		 4412 On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it
4413 is relative to the ".got" section. */
c25bc9fc
L		 4414 if (sym != NULL
4415 && (strcmp (h->root.root.string, "_DYNAMIC") == 0
4416 || (!htab->is_vxworks && h == htab->elf.hgot)))
252b5132
RH		 4417 sym->st_shndx = SHN_ABS;
4418
b34976b6 4419 return TRUE;
252b5132
RH		 4420}
4421
c25bc9fc
L		 4422/* Finish up local dynamic symbol handling. We set the contents of
4423 various dynamic sections here. */
4424
4425static bfd_boolean
4426elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4427{
4428 struct elf_link_hash_entry *h
4429 = (struct elf_link_hash_entry *) *slot;
4430 struct bfd_link_info *info
4431 = (struct bfd_link_info *) inf;
4432
4433 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4434 h, NULL);
4435}
4436
38701953
AM		 4437/* Used to decide how to sort relocs in an optimal manner for the
4438 dynamic linker, before writing them out. */
4439
4440static enum elf_reloc_type_class
55fd94b0 4441elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
38701953 4442{
55fd94b0 4443 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4444 {
4445 case R_386_RELATIVE:
4446 return reloc_class_relative;
4447 case R_386_JUMP_SLOT:
4448 return reloc_class_plt;
4449 case R_386_COPY:
4450 return reloc_class_copy;
4451 default:
4452 return reloc_class_normal;
4453 }
4454}
4455
252b5132
RH		 4456/* Finish up the dynamic sections. */
4457
b34976b6 4458static bfd_boolean
55fd94b0
AM		 4459elf_i386_finish_dynamic_sections (bfd *output_bfd,
4460 struct bfd_link_info *info)
252b5132 4461{
6725bdbf 4462 struct elf_i386_link_hash_table *htab;
252b5132 4463 bfd *dynobj;
252b5132
RH		 4464 asection *sdyn;
4465
6725bdbf 4466 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4467 if (htab == NULL)
4468 return FALSE;
4469
ebe50bae 4470 dynobj = htab->elf.dynobj;
252b5132
RH		 4471 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4472
ebe50bae 4473 if (htab->elf.dynamic_sections_created)
252b5132 4474 {
252b5132
RH		 4475 Elf32_External_Dyn *dyncon, *dynconend;
4476
6de2ae4a 4477 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4478 abort ();
252b5132
RH		 4479
4480 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4481 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4482 for (; dyncon < dynconend; dyncon++)
4483 {
4484 Elf_Internal_Dyn dyn;
51b64d56 4485 asection *s;
252b5132
RH		 4486
4487 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4488
4489 switch (dyn.d_tag)
4490 {
4491 default:
7a2b07ff
NS		 4492 if (htab->is_vxworks
4493 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4494 break;
0ac8d2ca 4495 continue;
252b5132
RH		 4496
4497 case DT_PLTGOT:
6de2ae4a 4498 s = htab->elf.sgotplt;
8c37241b 4499 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 4500 break;
4501
252b5132 4502 case DT_JMPREL:
6de2ae4a 4503 s = htab->elf.srelplt;
6348e046 4504 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 4505 break;
4506
4507 case DT_PLTRELSZ:
6de2ae4a 4508 s = htab->elf.srelplt;
eea6121a 4509 dyn.d_un.d_val = s->size;
252b5132
RH		 4510 break;
4511
4512 case DT_RELSZ:
4513 /* My reading of the SVR4 ABI indicates that the
4514 procedure linkage table relocs (DT_JMPREL) should be
4515 included in the overall relocs (DT_REL). This is
4516 what Solaris does. However, UnixWare can not handle
4517 that case. Therefore, we override the DT_RELSZ entry
6348e046 4518 here to make it not include the JMPREL relocs. */
6de2ae4a 4519 s = htab->elf.srelplt;
6348e046
AM		 4520 if (s == NULL)
4521 continue;
eea6121a 4522 dyn.d_un.d_val -= s->size;
6348e046
AM		 4523 break;
4524
4525 case DT_REL:
4526 /* We may not be using the standard ELF linker script.
4527 If .rel.plt is the first .rel section, we adjust
4528 DT_REL to not include it. */
6de2ae4a 4529 s = htab->elf.srelplt;
6348e046
AM		 4530 if (s == NULL)
4531 continue;
4532 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4533 continue;
eea6121a 4534 dyn.d_un.d_ptr += s->size;
252b5132
RH		 4535 break;
4536 }
0ac8d2ca
AM		 4537
4538 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 4539 }
4540
4541 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 4542 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 4543 {
4544 if (info->shared)
eac338cf 4545 {
6de2ae4a 4546 memcpy (htab->elf.splt->contents, elf_i386_pic_plt0_entry,
eac338cf 4547 sizeof (elf_i386_pic_plt0_entry));
6de2ae4a 4548 memset (htab->elf.splt->contents + sizeof (elf_i386_pic_plt0_entry),
eac338cf
PB		 4549 htab->plt0_pad_byte,
4550 PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry));
4551 }
252b5132
RH		 4552 else
4553 {
6de2ae4a 4554 memcpy (htab->elf.splt->contents, elf_i386_plt0_entry,
eac338cf 4555 sizeof(elf_i386_plt0_entry));
6de2ae4a 4556 memset (htab->elf.splt->contents + sizeof (elf_i386_plt0_entry),
eac338cf
PB		 4557 htab->plt0_pad_byte,
4558 PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry));
252b5132 4559 bfd_put_32 (output_bfd,
6de2ae4a
L		 4560 (htab->elf.sgotplt->output_section->vma
4561 + htab->elf.sgotplt->output_offset
6725bdbf 4562 + 4),
6de2ae4a 4563 htab->elf.splt->contents + 2);
252b5132 4564 bfd_put_32 (output_bfd,
6de2ae4a
L		 4565 (htab->elf.sgotplt->output_section->vma
4566 + htab->elf.sgotplt->output_offset
6725bdbf 4567 + 8),
6de2ae4a 4568 htab->elf.splt->contents + 8);
eac338cf
PB		 4569
4570 if (htab->is_vxworks)
4571 {
4572 Elf_Internal_Rela rel;
7325306f 4573
eac338cf
PB		 4574 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4575 On IA32 we use REL relocations so the addend goes in
4576 the PLT directly. */
6de2ae4a
L		 4577 rel.r_offset = (htab->elf.splt->output_section->vma
4578 + htab->elf.splt->output_offset
eac338cf 4579 + 2);
7325306f 4580 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4581 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4582 htab->srelplt2->contents);
4583 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 4584 rel.r_offset = (htab->elf.splt->output_section->vma
4585 + htab->elf.splt->output_offset
eac338cf 4586 + 8);
7325306f 4587 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4588 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4589 htab->srelplt2->contents +
4590 sizeof (Elf32_External_Rel));
4591 }
252b5132
RH		 4592 }
4593
4594 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4595 really seem like the right value. */
6de2ae4a 4596 elf_section_data (htab->elf.splt->output_section)
6725bdbf 4597 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 4598
4599 /* Correct the .rel.plt.unloaded relocations. */
4600 if (htab->is_vxworks && !info->shared)
4601 {
6de2ae4a 4602 int num_plts = (htab->elf.splt->size / PLT_ENTRY_SIZE) - 1;
4c9b0de6 4603 unsigned char *p;
eac338cf
PB		 4604
4605 p = htab->srelplt2->contents;
4606 if (info->shared)
4607 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4608 else
4609 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4610
4611 for (; num_plts; num_plts--)
4612 {
4613 Elf_Internal_Rela rel;
4614 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4615 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4616 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4617 p += sizeof (Elf32_External_Rel);
4618
4619 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4620 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4621 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4622 p += sizeof (Elf32_External_Rel);
4623 }
4624 }
252b5132
RH		 4625 }
4626 }
4627
6de2ae4a 4628 if (htab->elf.sgotplt)
252b5132 4629 {
56d4289c
L		 4630 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4631 {
4632 (*_bfd_error_handler)
4633 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4634 return FALSE;
4635 }
4636
12d0ee4a 4637 /* Fill in the first three entries in the global offset table. */
6de2ae4a 4638 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 4639 {
4640 bfd_put_32 (output_bfd,
55fd94b0 4641 (sdyn == NULL ? 0
12d0ee4a 4642 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 4643 htab->elf.sgotplt->contents);
4644 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4645 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 4646 }
252b5132 4647
6de2ae4a 4648 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 4649 }
8c37241b 4650
6de2ae4a
L		 4651 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4652 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 4653
c25bc9fc
L		 4654 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4655 htab_traverse (htab->loc_hash_table,
4656 elf_i386_finish_local_dynamic_symbol,
4657 info);
4658
b34976b6 4659 return TRUE;
252b5132
RH		 4660}
4661
4c45e5c9
JJ		 4662/* Return address for Ith PLT stub in section PLT, for relocation REL
4663 or (bfd_vma) -1 if it should not be included. */
4664
4665static bfd_vma
4666elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
4667 const arelent *rel ATTRIBUTE_UNUSED)
4668{
4669 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
4670}
4671
fdc90cb4
JJ		 4672/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
4673
4674static bfd_boolean
4675elf_i386_hash_symbol (struct elf_link_hash_entry *h)
4676{
4677 if (h->plt.offset != (bfd_vma) -1
4678 && !h->def_regular
4679 && !h->pointer_equality_needed)
4680 return FALSE;
4681
4682 return _bfd_elf_hash_symbol (h);
4683}
4c45e5c9 4684
d8045f23
NC		 4685/* Hook called by the linker routine which adds symbols from an object
4686 file. */
4687
4688static bfd_boolean
c16153ae 4689elf_i386_add_symbol_hook (bfd * abfd,
d8045f23
NC		 4690 struct bfd_link_info * info ATTRIBUTE_UNUSED,
4691 Elf_Internal_Sym * sym,
4692 const char ** namep ATTRIBUTE_UNUSED,
4693 flagword * flagsp ATTRIBUTE_UNUSED,
4694 asection ** secp ATTRIBUTE_UNUSED,
4695 bfd_vma * valp ATTRIBUTE_UNUSED)
4696{
c16153ae
L		 4697 if ((abfd->flags & DYNAMIC) == 0
4698 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
d8045f23
NC		 4699 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
4700
4701 return TRUE;
4702}
4703
252b5132
RH		 4704#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
4705#define TARGET_LITTLE_NAME "elf32-i386"
4706#define ELF_ARCH bfd_arch_i386
ae95ffa6 4707#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 4708#define ELF_MACHINE_CODE EM_386
4709#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 4710
4711#define elf_backend_can_gc_sections 1
51b64d56 4712#define elf_backend_can_refcount 1
252b5132
RH		 4713#define elf_backend_want_got_plt 1
4714#define elf_backend_plt_readonly 1
4715#define elf_backend_want_plt_sym 0
4716#define elf_backend_got_header_size 12
252b5132 4717
8c29f035
AM		 4718/* Support RELA for objdump of prelink objects. */
4719#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 4720#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
4721
13ae64f3 4722#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 4723
dd5724d5
AM		 4724#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
4725#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
c25bc9fc 4726#define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
dd5724d5 4727#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 4728#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM		 4729
4730#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 4731#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 4732#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 4733#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 4734#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 4735#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 4736#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
4737#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
4738#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
4739#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 4740#define elf_backend_grok_prstatus elf_i386_grok_prstatus
4741#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 4742#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 4743#define elf_backend_relocate_section elf_i386_relocate_section
4744#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 4745#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 4746#define elf_backend_omit_section_dynsym \
4747 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 4748#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 4749#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23
NC		 4750#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
4751#undef elf_backend_post_process_headers
4752#define elf_backend_post_process_headers _bfd_elf_set_osabi
dd5724d5 4753
252b5132 4754#include "elf32-target.h"
2bc3c89a
AM		 4755
4756/* FreeBSD support. */
4757
4758#undef TARGET_LITTLE_SYM
4759#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
4760#undef TARGET_LITTLE_NAME
4761#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 4762#undef ELF_OSABI
4763#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 4764
4765/* The kernel recognizes executables as valid only if they carry a
4766 "FreeBSD" label in the ELF header. So we put this label on all
4767 executables and (for simplicity) also all other object files. */
4768
2bc3c89a 4769static void
d8045f23 4770elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 4771{
d8045f23 4772 _bfd_elf_set_osabi (abfd, info);
2bc3c89a 4773
2bc3c89a
AM		 4774#ifdef OLD_FREEBSD_ABI_LABEL
4775 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
4776 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 4777#endif
2bc3c89a
AM		 4778}
4779
4780#undef elf_backend_post_process_headers
d8045f23 4781#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 4782#undef elf32_bed
4783#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 4784
d8045f23
NC		 4785#undef elf_backend_add_symbol_hook
4786
2bc3c89a 4787#include "elf32-target.h"
eac338cf 4788
a6cc6b3b
RO		 4789/* Solaris 2. */
4790
4791#undef TARGET_LITTLE_SYM
4792#define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec
4793#undef TARGET_LITTLE_NAME
4794#define TARGET_LITTLE_NAME "elf32-i386-sol2"
4795
4796/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
4797 objects won't be recognized. */
4798#undef ELF_OSABI
4799
4800#undef elf32_bed
4801#define elf32_bed elf32_i386_sol2_bed
4802
7dc98aea
RO		 4803/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
4804 boundary. */
4805#undef elf_backend_static_tls_alignment
4806#define elf_backend_static_tls_alignment 8
4807
a6cc6b3b
RO		 4808/* The Solaris 2 ABI requires a plt symbol on all platforms.
4809
4810 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
4811 File, p.63. */
4812#undef elf_backend_want_plt_sym
4813#define elf_backend_want_plt_sym 1
4814
4815#include "elf32-target.h"
4816
eac338cf
PB		 4817/* VxWorks support. */
4818
4819#undef TARGET_LITTLE_SYM
4820#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
4821#undef TARGET_LITTLE_NAME
4822#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 4823#undef ELF_OSABI
eac338cf
PB		 4824
4825/* Like elf_i386_link_hash_table_create but with tweaks for VxWorks. */
4826
4827static struct bfd_link_hash_table *
4828elf_i386_vxworks_link_hash_table_create (bfd *abfd)
4829{
4830 struct bfd_link_hash_table *ret;
4831 struct elf_i386_link_hash_table *htab;
4832
4833 ret = elf_i386_link_hash_table_create (abfd);
4834 if (ret)
4835 {
4836 htab = (struct elf_i386_link_hash_table *) ret;
4837 htab->is_vxworks = 1;
4838 htab->plt0_pad_byte = 0x90;
4839 }
4840
4841 return ret;
4842}
4843
4844
13285a1b
AM		 4845#undef elf_backend_relocs_compatible
4846#undef elf_backend_post_process_headers
eac338cf
PB		 4847#undef bfd_elf32_bfd_link_hash_table_create
4848#define bfd_elf32_bfd_link_hash_table_create \
4849 elf_i386_vxworks_link_hash_table_create
4850#undef elf_backend_add_symbol_hook
4851#define elf_backend_add_symbol_hook \
4852 elf_vxworks_add_symbol_hook
4853#undef elf_backend_link_output_symbol_hook
4854#define elf_backend_link_output_symbol_hook \
9c72ff84 4855 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 4856#undef elf_backend_emit_relocs
4857#define elf_backend_emit_relocs elf_vxworks_emit_relocs
4858#undef elf_backend_final_write_processing
4859#define elf_backend_final_write_processing \
4860 elf_vxworks_final_write_processing
7dc98aea 4861#undef elf_backend_static_tls_alignment
eac338cf
PB		 4862
4863/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
4864 define it. */
4865#undef elf_backend_want_plt_sym
4866#define elf_backend_want_plt_sym 1
4867
4868#undef elf32_bed
4869#define elf32_bed elf32_i386_vxworks_bed
4870
4871#include "elf32-target.h"
GDB Binutils - Deliverables
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