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[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
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252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
b2a8e766 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
61315175 3 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
9f973f28 4 Free Software Foundation, Inc.
252b5132 5
571fe01f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
571fe01f
NC		 8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
571fe01f 11 (at your option) any later version.
252b5132 12
571fe01f
NC		 13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
571fe01f
NC		 18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
cd123cb7
NC		 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
252b5132 22
252b5132 23#include "sysdep.h"
3db64b00 24#include "bfd.h"
252b5132
RH		 25#include "bfdlink.h"
26#include "libbfd.h"
27#include "elf-bfd.h"
5a68afcf 28#include "elf-nacl.h"
eac338cf 29#include "elf-vxworks.h"
142411ca 30#include "bfd_stdint.h"
c25bc9fc
L		 31#include "objalloc.h"
32#include "hashtab.h"
e41b3a13 33#include "dwarf2.h"
252b5132 34
55fd94b0
AM		 35/* 386 uses REL relocations instead of RELA. */
36#define USE_REL 1
252b5132
RH		 37
38#include "elf/i386.h"
39
40static reloc_howto_type elf_howto_table[]=
41{
b34976b6 42 HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
1b452ec6 43 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 44 TRUE, 0x00000000, 0x00000000, FALSE),
45 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 46 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 47 TRUE, 0xffffffff, 0xffffffff, FALSE),
48 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 49 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 50 TRUE, 0xffffffff, 0xffffffff, TRUE),
51 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 52 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 53 TRUE, 0xffffffff, 0xffffffff, FALSE),
54 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 55 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 56 TRUE, 0xffffffff, 0xffffffff, TRUE),
57 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 58 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 59 TRUE, 0xffffffff, 0xffffffff, FALSE),
60 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 61 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 62 TRUE, 0xffffffff, 0xffffffff, FALSE),
63 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 64 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 65 TRUE, 0xffffffff, 0xffffffff, FALSE),
66 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 67 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 68 TRUE, 0xffffffff, 0xffffffff, FALSE),
69 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 70 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 71 TRUE, 0xffffffff, 0xffffffff, FALSE),
72 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 73 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 74 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 75
dc47f327
AM		 76 /* We have a gap in the reloc numbers here.
77 R_386_standard counts the number up to this point, and
78 R_386_ext_offset is the value to subtract from a reloc type of
79 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 80#define R_386_standard (R_386_GOTPC + 1)
81#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 82
37e55690 83 /* These relocs are a GNU extension. */
b34976b6 84 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 85 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 86 TRUE, 0xffffffff, 0xffffffff, FALSE),
87 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 88 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 89 TRUE, 0xffffffff, 0xffffffff, FALSE),
90 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 91 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 92 TRUE, 0xffffffff, 0xffffffff, FALSE),
93 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 94 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 95 TRUE, 0xffffffff, 0xffffffff, FALSE),
96 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 97 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 98 TRUE, 0xffffffff, 0xffffffff, FALSE),
99 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 100 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 101 TRUE, 0xffffffff, 0xffffffff, FALSE),
102 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 103 bfd_elf_generic_reloc, "R_386_16",
b34976b6 104 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 105 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 106 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 107 TRUE, 0xffff, 0xffff, TRUE),
108 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 109 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 110 TRUE, 0xff, 0xff, FALSE),
111 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 112 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 113 TRUE, 0xff, 0xff, TRUE),
dc47f327 114
55fd94b0
AM		 115#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
116#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 117 /* These are common with Solaris TLS implementation. */
b34976b6 118 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 119 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 120 TRUE, 0xffffffff, 0xffffffff, FALSE),
121 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 122 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 123 TRUE, 0xffffffff, 0xffffffff, FALSE),
124 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 125 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 126 TRUE, 0xffffffff, 0xffffffff, FALSE),
127 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 128 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 129 TRUE, 0xffffffff, 0xffffffff, FALSE),
130 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 131 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 132 TRUE, 0xffffffff, 0xffffffff, FALSE),
133 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 134 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 135 TRUE, 0xffffffff, 0xffffffff, FALSE),
1788fc08
L		 136 HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
137 bfd_elf_generic_reloc, "R_386_SIZE32",
138 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 139 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
140 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
141 TRUE, 0xffffffff, 0xffffffff, FALSE),
142 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
143 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
144 FALSE, 0, 0, FALSE),
145 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_386_TLS_DESC",
147 TRUE, 0xffffffff, 0xffffffff, FALSE),
cbe950e9
L		 148 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_386_IRELATIVE",
150 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 151
152 /* Another gap. */
cbe950e9
L		 153#define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset)
154#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative)
252b5132
RH		 155
156/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 157 HOWTO (R_386_GNU_VTINHERIT, /* type */
158 0, /* rightshift */
159 2, /* size (0 = byte, 1 = short, 2 = long) */
160 0, /* bitsize */
b34976b6 161 FALSE, /* pc_relative */
252b5132
RH		 162 0, /* bitpos */
163 complain_overflow_dont, /* complain_on_overflow */
164 NULL, /* special_function */
165 "R_386_GNU_VTINHERIT", /* name */
b34976b6 166 FALSE, /* partial_inplace */
252b5132
RH		 167 0, /* src_mask */
168 0, /* dst_mask */
b34976b6 169 FALSE), /* pcrel_offset */
252b5132
RH		 170
171/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 172 HOWTO (R_386_GNU_VTENTRY, /* type */
173 0, /* rightshift */
174 2, /* size (0 = byte, 1 = short, 2 = long) */
175 0, /* bitsize */
b34976b6 176 FALSE, /* pc_relative */
252b5132
RH		 177 0, /* bitpos */
178 complain_overflow_dont, /* complain_on_overflow */
179 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
180 "R_386_GNU_VTENTRY", /* name */
b34976b6 181 FALSE, /* partial_inplace */
252b5132
RH		 182 0, /* src_mask */
183 0, /* dst_mask */
b34976b6 184 FALSE) /* pcrel_offset */
dc47f327 185
55fd94b0 186#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 187
188};
189
252b5132 190#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 191#define TRACE(str) \
192 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 193#else
194#define TRACE(str)
195#endif
196
197static reloc_howto_type *
55fd94b0
AM		 198elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
199 bfd_reloc_code_real_type code)
252b5132
RH		 200{
201 switch (code)
202 {
203 case BFD_RELOC_NONE:
204 TRACE ("BFD_RELOC_NONE");
55fd94b0 205 return &elf_howto_table[R_386_NONE];
252b5132
RH		 206
207 case BFD_RELOC_32:
208 TRACE ("BFD_RELOC_32");
55fd94b0 209 return &elf_howto_table[R_386_32];
252b5132
RH		 210
211 case BFD_RELOC_CTOR:
212 TRACE ("BFD_RELOC_CTOR");
55fd94b0 213 return &elf_howto_table[R_386_32];
252b5132
RH		 214
215 case BFD_RELOC_32_PCREL:
216 TRACE ("BFD_RELOC_PC32");
55fd94b0 217 return &elf_howto_table[R_386_PC32];
252b5132
RH		 218
219 case BFD_RELOC_386_GOT32:
220 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 221 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 222
223 case BFD_RELOC_386_PLT32:
224 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 225 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 226
227 case BFD_RELOC_386_COPY:
228 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 229 return &elf_howto_table[R_386_COPY];
252b5132
RH		 230
231 case BFD_RELOC_386_GLOB_DAT:
232 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 233 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 234
235 case BFD_RELOC_386_JUMP_SLOT:
236 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 237 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 238
239 case BFD_RELOC_386_RELATIVE:
240 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 241 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 242
243 case BFD_RELOC_386_GOTOFF:
244 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 245 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 246
247 case BFD_RELOC_386_GOTPC:
248 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 249 return &elf_howto_table[R_386_GOTPC];
252b5132 250
37e55690
JJ		 251 /* These relocs are a GNU extension. */
252 case BFD_RELOC_386_TLS_TPOFF:
253 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 254 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 255
256 case BFD_RELOC_386_TLS_IE:
257 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 258 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 259
260 case BFD_RELOC_386_TLS_GOTIE:
261 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 262 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 263
13ae64f3
JJ		 264 case BFD_RELOC_386_TLS_LE:
265 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 266 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 267
268 case BFD_RELOC_386_TLS_GD:
269 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 270 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 271
272 case BFD_RELOC_386_TLS_LDM:
273 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 274 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 275
252b5132
RH		 276 case BFD_RELOC_16:
277 TRACE ("BFD_RELOC_16");
55fd94b0 278 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 279
280 case BFD_RELOC_16_PCREL:
281 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 282 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 283
284 case BFD_RELOC_8:
285 TRACE ("BFD_RELOC_8");
55fd94b0 286 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 287
288 case BFD_RELOC_8_PCREL:
289 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 290 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 291
13ae64f3
JJ		 292 /* Common with Sun TLS implementation. */
293 case BFD_RELOC_386_TLS_LDO_32:
294 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 295 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 296
297 case BFD_RELOC_386_TLS_IE_32:
298 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 299 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 300
301 case BFD_RELOC_386_TLS_LE_32:
302 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 303 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 304
305 case BFD_RELOC_386_TLS_DTPMOD32:
306 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 307 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 308
309 case BFD_RELOC_386_TLS_DTPOFF32:
310 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 311 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 312
313 case BFD_RELOC_386_TLS_TPOFF32:
314 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 315 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 316
1788fc08
L		 317 case BFD_RELOC_SIZE32:
318 TRACE ("BFD_RELOC_SIZE32");
319 return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset];
320
67a4f2b7
AO		 321 case BFD_RELOC_386_TLS_GOTDESC:
322 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
323 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
324
325 case BFD_RELOC_386_TLS_DESC_CALL:
326 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
327 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
328
329 case BFD_RELOC_386_TLS_DESC:
330 TRACE ("BFD_RELOC_386_TLS_DESC");
331 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
332
cbe950e9
L		 333 case BFD_RELOC_386_IRELATIVE:
334 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 335 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 336
252b5132
RH		 337 case BFD_RELOC_VTABLE_INHERIT:
338 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 339 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 340
341 case BFD_RELOC_VTABLE_ENTRY:
342 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 343 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 344
345 default:
346 break;
347 }
348
349 TRACE ("Unknown");
350 return 0;
351}
352
157090f7
AM		 353static reloc_howto_type *
354elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
355 const char *r_name)
356{
357 unsigned int i;
358
359 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
360 if (elf_howto_table[i].name != NULL
361 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
362 return &elf_howto_table[i];
363
364 return NULL;
365}
366
142411ca
L		 367static reloc_howto_type *
368elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 369{
dc47f327
AM		 370 unsigned int indx;
371
372 if ((indx = r_type) >= R_386_standard
373 && ((indx = r_type - R_386_ext_offset) - R_386_standard
374 >= R_386_ext - R_386_standard)
13ae64f3 375 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9
L		 376 >= R_386_irelative - R_386_ext)
377 && ((indx = r_type - R_386_vt_offset) - R_386_irelative
378 >= R_386_vt - R_386_irelative))
252b5132 379 {
d003868e
AM		 380 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
381 abfd, (int) r_type);
55fd94b0 382 indx = R_386_NONE;
252b5132 383 }
142411ca
L		 384 BFD_ASSERT (elf_howto_table [indx].type == r_type);
385 return &elf_howto_table[indx];
386}
387
388static void
389elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
390 arelent *cache_ptr,
391 Elf_Internal_Rela *dst)
392{
393 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
394 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 395}
396
397/* Return whether a symbol name implies a local label. The UnixWare
398 2.1 cc generates temporary symbols that start with .X, so we
399 recognize them here. FIXME: do other SVR4 compilers also use .X?.
400 If so, we should move the .X recognition into
401 _bfd_elf_is_local_label_name. */
402
b34976b6 403static bfd_boolean
55fd94b0 404elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 405{
406 if (name[0] == '.' && name[1] == 'X')
b34976b6 407 return TRUE;
252b5132
RH		 408
409 return _bfd_elf_is_local_label_name (abfd, name);
410}
411\f
38701953 412/* Support for core dump NOTE sections. */
61adc1a4 413
b34976b6 414static bfd_boolean
55fd94b0 415elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 416{
417 int offset;
eea6121a 418 size_t size;
38701953 419
61adc1a4 420 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 421 {
61adc1a4
NC		 422 int pr_version = bfd_get_32 (abfd, note->descdata);
423
424 if (pr_version != 1)
425 return FALSE;
426
427 /* pr_cursig */
228e534f 428 elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20);
61adc1a4
NC		 429
430 /* pr_pid */
228e534f 431 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 432
433 /* pr_reg */
434 offset = 28;
eea6121a 435 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 436 }
437 else
438 {
439 switch (note->descsz)
440 {
441 default:
442 return FALSE;
38701953 443
61adc1a4
NC		 444 case 144: /* Linux/i386 */
445 /* pr_cursig */
228e534f 446 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 447
61adc1a4 448 /* pr_pid */
228e534f 449 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 450
61adc1a4
NC		 451 /* pr_reg */
452 offset = 72;
eea6121a 453 size = 68;
38701953 454
61adc1a4
NC		 455 break;
456 }
38701953
AM		 457 }
458
459 /* Make a ".reg/999" section. */
460 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 461 size, note->descpos + offset);
38701953
AM		 462}
463
b34976b6 464static bfd_boolean
55fd94b0 465elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 466{
61adc1a4 467 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 468 {
61adc1a4
NC		 469 int pr_version = bfd_get_32 (abfd, note->descdata);
470
471 if (pr_version != 1)
b34976b6 472 return FALSE;
38701953 473
228e534f 474 elf_tdata (abfd)->core->program
61adc1a4 475 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
228e534f 476 elf_tdata (abfd)->core->command
61adc1a4
NC		 477 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
478 }
479 else
480 {
481 switch (note->descsz)
482 {
483 default:
484 return FALSE;
485
486 case 124: /* Linux/i386 elf_prpsinfo. */
228e534f 487 elf_tdata (abfd)->core->pid
261b8d08 488 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 489 elf_tdata (abfd)->core->program
61adc1a4 490 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 491 elf_tdata (abfd)->core->command
61adc1a4
NC		 492 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
493 }
38701953
AM		 494 }
495
496 /* Note that for some reason, a spurious space is tacked
497 onto the end of the args in some (at least one anyway)
498 implementations, so strip it off if it exists. */
38701953 499 {
228e534f 500 char *command = elf_tdata (abfd)->core->command;
38701953
AM		 501 int n = strlen (command);
502
503 if (0 < n && command[n - 1] == ' ')
504 command[n - 1] = '\0';
505 }
506
b34976b6 507 return TRUE;
38701953
AM		 508}
509\f
510/* Functions for the i386 ELF linker.
511
512 In order to gain some understanding of code in this file without
513 knowing all the intricate details of the linker, note the
514 following:
515
516 Functions named elf_i386_* are called by external routines, other
517 functions are only called locally. elf_i386_* functions appear
518 in this file more or less in the order in which they are called
519 from external routines. eg. elf_i386_check_relocs is called
520 early in the link process, elf_i386_finish_dynamic_sections is
521 one of the last functions. */
522
252b5132
RH		 523
524/* The name of the dynamic interpreter. This is put in the .interp
525 section. */
526
527#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
528
a23b6845
AM		 529/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
530 copying dynamic variables from a shared lib into an app's dynbss
531 section, and instead use a dynamic relocation to point into the
532 shared lib. */
533#define ELIMINATE_COPY_RELOCS 1
534
252b5132
RH		 535/* The size in bytes of an entry in the procedure linkage table. */
536
537#define PLT_ENTRY_SIZE 16
538
539/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 540 this. See the SVR4 ABI i386 supplement to see how this works.
541 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 542
eac338cf 543static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 544{
545 0xff, 0x35, /* pushl contents of address */
546 0, 0, 0, 0, /* replaced with address of .got + 4. */
547 0xff, 0x25, /* jmp indirect */
eac338cf 548 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 549};
550
551/* Subsequent entries in an absolute procedure linkage table look like
552 this. */
553
554static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
555{
556 0xff, 0x25, /* jmp indirect */
557 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
558 0x68, /* pushl immediate */
559 0, 0, 0, 0, /* replaced with offset into relocation table. */
560 0xe9, /* jmp relative */
561 0, 0, 0, 0 /* replaced with offset to start of .plt. */
562};
563
eac338cf
PB		 564/* The first entry in a PIC procedure linkage table look like this.
565 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 566
eac338cf 567static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 568{
569 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 570 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 571};
572
573/* Subsequent entries in a PIC procedure linkage table look like this. */
574
575static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
576{
577 0xff, 0xa3, /* jmp *offset(%ebx) */
578 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
579 0x68, /* pushl immediate */
580 0, 0, 0, 0, /* replaced with offset into relocation table. */
581 0xe9, /* jmp relative */
582 0, 0, 0, 0 /* replaced with offset to start of .plt. */
583};
584
e41b3a13
JJ		 585/* .eh_frame covering the .plt section. */
586
587static const bfd_byte elf_i386_eh_frame_plt[] =
588{
589#define PLT_CIE_LENGTH 20
590#define PLT_FDE_LENGTH 36
591#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
592#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
593 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
594 0, 0, 0, 0, /* CIE ID */
595 1, /* CIE version */
596 'z', 'R', 0, /* Augmentation string */
597 1, /* Code alignment factor */
598 0x7c, /* Data alignment factor */
599 8, /* Return address column */
600 1, /* Augmentation size */
601 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
602 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
603 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
604 DW_CFA_nop, DW_CFA_nop,
605
606 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
607 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
608 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
609 0, 0, 0, 0, /* .plt size goes here */
610 0, /* Augmentation size */
611 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
612 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
613 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
614 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
615 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
616 11, /* Block length */
617 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
618 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
619 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 620 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ		 621 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
622};
623
25e762b9
RM		 624struct elf_i386_plt_layout
625{
626 /* The first entry in an absolute procedure linkage table looks like this. */
627 const bfd_byte *plt0_entry;
628 unsigned int plt0_entry_size;
629
630 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
631 unsigned int plt0_got1_offset;
632 unsigned int plt0_got2_offset;
633
634 /* Later entries in an absolute procedure linkage table look like this. */
635 const bfd_byte *plt_entry;
636 unsigned int plt_entry_size;
637
638 /* Offsets into plt_entry that are to be replaced with... */
639 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
640 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
641 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
642
643 /* Offset into plt_entry where the initial value of the GOT entry points. */
644 unsigned int plt_lazy_offset;
645
646 /* The first entry in a PIC procedure linkage table looks like this. */
647 const bfd_byte *pic_plt0_entry;
648
649 /* Subsequent entries in a PIC procedure linkage table look like this. */
650 const bfd_byte *pic_plt_entry;
651
652 /* .eh_frame covering the .plt section. */
653 const bfd_byte *eh_frame_plt;
654 unsigned int eh_frame_plt_size;
655};
656
657#define GET_PLT_ENTRY_SIZE(abfd) \
658 get_elf_i386_backend_data (abfd)->plt->plt_entry_size
659
660/* These are the standard parameters. */
661static const struct elf_i386_plt_layout elf_i386_plt =
662 {
663 elf_i386_plt0_entry, /* plt0_entry */
664 sizeof (elf_i386_plt0_entry), /* plt0_entry_size */
665 2, /* plt0_got1_offset */
666 8, /* plt0_got2_offset */
667 elf_i386_plt_entry, /* plt_entry */
668 PLT_ENTRY_SIZE, /* plt_entry_size */
669 2, /* plt_got_offset */
670 7, /* plt_reloc_offset */
671 12, /* plt_plt_offset */
672 6, /* plt_lazy_offset */
673 elf_i386_pic_plt0_entry, /* pic_plt0_entry */
674 elf_i386_pic_plt_entry, /* pic_plt_entry */
675 elf_i386_eh_frame_plt, /* eh_frame_plt */
676 sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */
677 };
678\f
679
eac338cf
PB		 680/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
681 for the PLTResolve stub and then for each PLT entry. */
682#define PLTRESOLVE_RELOCS_SHLIB 0
683#define PLTRESOLVE_RELOCS 2
684#define PLT_NON_JUMP_SLOT_RELOCS 2
685
23209a78
RM		 686/* Architecture-specific backend data for i386. */
687
688struct elf_i386_backend_data
689{
25e762b9
RM		 690 /* Parameters describing PLT generation. */
691 const struct elf_i386_plt_layout *plt;
692
23209a78
RM		 693 /* Value used to fill the unused bytes of the first PLT entry. */
694 bfd_byte plt0_pad_byte;
695
696 /* True if the target system is VxWorks. */
697 int is_vxworks;
698};
699
700#define get_elf_i386_backend_data(abfd) \
701 ((const struct elf_i386_backend_data *) \
702 get_elf_backend_data (abfd)->arch_data)
703
704/* These are the standard parameters. */
705static const struct elf_i386_backend_data elf_i386_arch_bed =
706 {
25e762b9 707 &elf_i386_plt, /* plt */
23209a78
RM		 708 0, /* plt0_pad_byte */
709 0, /* is_vxworks */
710 };
711
712#define elf_backend_arch_data &elf_i386_arch_bed
713
252b5132
RH		 714/* i386 ELF linker hash entry. */
715
716struct elf_i386_link_hash_entry
717{
ebe50bae 718 struct elf_link_hash_entry elf;
252b5132 719
0c715baa 720 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 721 struct elf_dyn_relocs *dyn_relocs;
13ae64f3 722
37e55690
JJ		 723#define GOT_UNKNOWN 0
724#define GOT_NORMAL 1
725#define GOT_TLS_GD 2
726#define GOT_TLS_IE 4
727#define GOT_TLS_IE_POS 5
728#define GOT_TLS_IE_NEG 6
729#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO		 730#define GOT_TLS_GDESC 8
731#define GOT_TLS_GD_BOTH_P(type) \
732 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
733#define GOT_TLS_GD_P(type) \
734 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
735#define GOT_TLS_GDESC_P(type) \
736 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
737#define GOT_TLS_GD_ANY_P(type) \
738 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 739 unsigned char tls_type;
67a4f2b7
AO		 740
741 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
742 starting at the end of the jump table. */
743 bfd_vma tlsdesc_got;
13ae64f3
JJ		 744};
745
746#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
747
748struct elf_i386_obj_tdata
749{
750 struct elf_obj_tdata root;
751
752 /* tls_type for each local got entry. */
753 char *local_got_tls_type;
67a4f2b7
AO		 754
755 /* GOTPLT entries for TLS descriptors. */
756 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 757};
758
13ae64f3
JJ		 759#define elf_i386_tdata(abfd) \
760 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
761
762#define elf_i386_local_got_tls_type(abfd) \
763 (elf_i386_tdata (abfd)->local_got_tls_type)
764
67a4f2b7
AO		 765#define elf_i386_local_tlsdesc_gotent(abfd) \
766 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
767
0ffa91dd
NC		 768#define is_i386_elf(bfd) \
769 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
770 && elf_tdata (bfd) != NULL \
4dfe6ac6 771 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 772
b34976b6 773static bfd_boolean
55fd94b0 774elf_i386_mkobject (bfd *abfd)
13ae64f3 775{
0ffa91dd 776 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 777 I386_ELF_DATA);
13ae64f3 778}
cedb70c5 779
252b5132
RH		 780/* i386 ELF linker hash table. */
781
782struct elf_i386_link_hash_table
783{
ebe50bae 784 struct elf_link_hash_table elf;
252b5132 785
6725bdbf 786 /* Short-cuts to get to dynamic linker sections. */
6725bdbf
AM		 787 asection *sdynbss;
788 asection *srelbss;
e41b3a13 789 asection *plt_eh_frame;
9635fe29 790
4dfe6ac6
NC		 791 union
792 {
13ae64f3
JJ		 793 bfd_signed_vma refcount;
794 bfd_vma offset;
795 } tls_ldm_got;
796
67a4f2b7
AO		 797 /* The amount of space used by the reserved portion of the sgotplt
798 section, plus whatever space is used by the jump slots. */
799 bfd_vma sgotplt_jump_table_size;
800
87d72d41
AM		 801 /* Small local sym cache. */
802 struct sym_cache sym_cache;
9f03412a
AO		 803
804 /* _TLS_MODULE_BASE_ symbol. */
805 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 806
807 /* Used by local STT_GNU_IFUNC symbols. */
808 htab_t loc_hash_table;
4dfe6ac6
NC		 809 void * loc_hash_memory;
810
811 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
812 asection *srelplt2;
813
4dfe6ac6
NC		 814 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
815 bfd_vma next_tls_desc_index;
e1f98742
L		 816
817 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
818 bfd_vma next_jump_slot_index;
819
820 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
821 bfd_vma next_irelative_index;
6725bdbf 822};
252b5132
RH		 823
824/* Get the i386 ELF linker hash table from a link_info structure. */
825
826#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 827 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
828 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 829
67a4f2b7 830#define elf_i386_compute_jump_table_size(htab) \
5ae0bfb6 831 ((htab)->next_tls_desc_index * 4)
67a4f2b7 832
252b5132
RH		 833/* Create an entry in an i386 ELF linker hash table. */
834
835static struct bfd_hash_entry *
eb4ff4d6
L		 836elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
837 struct bfd_hash_table *table,
838 const char *string)
252b5132 839{
252b5132
RH		 840 /* Allocate the structure if it has not already been allocated by a
841 subclass. */
ebe50bae
AM		 842 if (entry == NULL)
843 {
a50b1753
NC		 844 entry = (struct bfd_hash_entry *)
845 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 846 if (entry == NULL)
847 return entry;
848 }
252b5132
RH		 849
850 /* Call the allocation method of the superclass. */
ebe50bae
AM		 851 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
852 if (entry != NULL)
252b5132 853 {
ebe50bae
AM		 854 struct elf_i386_link_hash_entry *eh;
855
856 eh = (struct elf_i386_link_hash_entry *) entry;
857 eh->dyn_relocs = NULL;
13ae64f3 858 eh->tls_type = GOT_UNKNOWN;
67a4f2b7 859 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 860 }
861
ebe50bae 862 return entry;
252b5132
RH		 863}
864
c25bc9fc
L		 865/* Compute a hash of a local hash entry. We use elf_link_hash_entry
866 for local symbol so that we can handle local STT_GNU_IFUNC symbols
867 as global symbol. We reuse indx and dynstr_index for local symbol
868 hash since they aren't used by global symbols in this backend. */
869
870static hashval_t
871elf_i386_local_htab_hash (const void *ptr)
872{
873 struct elf_link_hash_entry *h
874 = (struct elf_link_hash_entry *) ptr;
d2149d72 875 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 876}
877
878/* Compare local hash entries. */
879
880static int
881elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
882{
883 struct elf_link_hash_entry *h1
884 = (struct elf_link_hash_entry *) ptr1;
885 struct elf_link_hash_entry *h2
886 = (struct elf_link_hash_entry *) ptr2;
887
888 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
889}
890
891/* Find and/or create a hash entry for local symbol. */
892
893static struct elf_link_hash_entry *
894elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
895 bfd *abfd, const Elf_Internal_Rela *rel,
896 bfd_boolean create)
897{
898 struct elf_i386_link_hash_entry e, *ret;
899 asection *sec = abfd->sections;
d2149d72
L		 900 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
901 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 902 void **slot;
903
904 e.elf.indx = sec->id;
905 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
906 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
907 create ? INSERT : NO_INSERT);
908
909 if (!slot)
910 return NULL;
911
912 if (*slot)
913 {
914 ret = (struct elf_i386_link_hash_entry *) *slot;
915 return &ret->elf;
916 }
917
918 ret = (struct elf_i386_link_hash_entry *)
919 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
920 sizeof (struct elf_i386_link_hash_entry));
921 if (ret)
922 {
923 memset (ret, 0, sizeof (*ret));
924 ret->elf.indx = sec->id;
925 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
926 ret->elf.dynindx = -1;
c25bc9fc
L		 927 *slot = ret;
928 }
929 return &ret->elf;
930}
931
252b5132
RH		 932/* Create an i386 ELF linker hash table. */
933
934static struct bfd_link_hash_table *
55fd94b0 935elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 936{
937 struct elf_i386_link_hash_table *ret;
dc810e39 938 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 939
7bf52ea2 940 ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt);
ebe50bae 941 if (ret == NULL)
252b5132
RH		 942 return NULL;
943
eb4ff4d6
L		 944 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
945 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 946 sizeof (struct elf_i386_link_hash_entry),
947 I386_ELF_DATA))
252b5132 948 {
e2d34d7d 949 free (ret);
252b5132
RH		 950 return NULL;
951 }
952
c25bc9fc
L		 953 ret->loc_hash_table = htab_try_create (1024,
954 elf_i386_local_htab_hash,
955 elf_i386_local_htab_eq,
956 NULL);
957 ret->loc_hash_memory = objalloc_create ();
958 if (!ret->loc_hash_table || !ret->loc_hash_memory)
959 {
960 free (ret);
961 return NULL;
962 }
963
ebe50bae 964 return &ret->elf.root;
252b5132
RH		 965}
966
c25bc9fc
L		 967/* Destroy an i386 ELF linker hash table. */
968
969static void
970elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash)
971{
972 struct elf_i386_link_hash_table *htab
973 = (struct elf_i386_link_hash_table *) hash;
974
975 if (htab->loc_hash_table)
976 htab_delete (htab->loc_hash_table);
977 if (htab->loc_hash_memory)
978 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
9f7c3e5e 979 _bfd_elf_link_hash_table_free (hash);
c25bc9fc
L		 980}
981
6725bdbf
AM		 982/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
983 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
984 hash table. */
985
b34976b6 986static bfd_boolean
55fd94b0 987elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 988{
989 struct elf_i386_link_hash_table *htab;
990
6725bdbf 991 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 992 return FALSE;
6725bdbf 993
6de2ae4a 994 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 995 if (htab == NULL)
996 return FALSE;
997
3d4d4302 998 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
6725bdbf 999 if (!info->shared)
3d4d4302 1000 htab->srelbss = bfd_get_linker_section (dynobj, ".rel.bss");
6725bdbf 1001
6de2ae4a 1002 if (!htab->sdynbss
6725bdbf
AM		 1003 || (!info->shared && !htab->srelbss))
1004 abort ();
1005
23209a78 1006 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1007 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1008 &htab->srelplt2))
711de32c 1009 return FALSE;
eac338cf 1010
e41b3a13 1011 if (!info->no_ld_generated_unwind_info
2fe0fd06 1012 && htab->plt_eh_frame == NULL
e4de50d4 1013 && htab->elf.splt != NULL)
e41b3a13 1014 {
bbf96e4e
L		 1015 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1016 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1017 | SEC_LINKER_CREATED);
e41b3a13 1018 htab->plt_eh_frame
bbf96e4e 1019 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ		 1020 if (htab->plt_eh_frame == NULL
1021 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1022 return FALSE;
e41b3a13
JJ		 1023 }
1024
b34976b6 1025 return TRUE;
6725bdbf
AM		 1026}
1027
ebe50bae
AM		 1028/* Copy the extra info we tack onto an elf_link_hash_entry. */
1029
51b64d56 1030static void
fcfa13d2 1031elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1032 struct elf_link_hash_entry *dir,
1033 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1034{
1035 struct elf_i386_link_hash_entry *edir, *eind;
1036
1037 edir = (struct elf_i386_link_hash_entry *) dir;
1038 eind = (struct elf_i386_link_hash_entry *) ind;
1039
bbd7ec4a 1040 if (eind->dyn_relocs != NULL)
ebe50bae 1041 {
bbd7ec4a
AM		 1042 if (edir->dyn_relocs != NULL)
1043 {
e03a8ed8
L		 1044 struct elf_dyn_relocs **pp;
1045 struct elf_dyn_relocs *p;
bbd7ec4a 1046
fcfa13d2 1047 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1048 list. Merge any entries against the same section. */
1049 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1050 {
e03a8ed8 1051 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1052
1053 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1054 if (q->sec == p->sec)
1055 {
1056 q->pc_count += p->pc_count;
1057 q->count += p->count;
1058 *pp = p->next;
1059 break;
1060 }
1061 if (q == NULL)
1062 pp = &p->next;
1063 }
1064 *pp = edir->dyn_relocs;
1065 }
1066
ebe50bae
AM		 1067 edir->dyn_relocs = eind->dyn_relocs;
1068 eind->dyn_relocs = NULL;
1069 }
ebe50bae 1070
cd67d266
JJ		 1071 if (ind->root.type == bfd_link_hash_indirect
1072 && dir->got.refcount <= 0)
1073 {
1074 edir->tls_type = eind->tls_type;
1075 eind->tls_type = GOT_UNKNOWN;
1076 }
81848ca0
AM		 1077
1078 if (ELIMINATE_COPY_RELOCS
1079 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1080 && dir->dynamic_adjusted)
1081 {
1082 /* If called to transfer flags for a weakdef during processing
1083 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1084 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1085 dir->ref_dynamic |= ind->ref_dynamic;
1086 dir->ref_regular |= ind->ref_regular;
1087 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1088 dir->needs_plt |= ind->needs_plt;
1089 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1090 }
81848ca0 1091 else
fcfa13d2 1092 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
ebe50bae
AM		 1093}
1094
142411ca
L		 1095/* Return TRUE if the TLS access code sequence support transition
1096 from R_TYPE. */
1097
1098static bfd_boolean
1099elf_i386_check_tls_transition (bfd *abfd, asection *sec,
1100 bfd_byte *contents,
1101 Elf_Internal_Shdr *symtab_hdr,
1102 struct elf_link_hash_entry **sym_hashes,
1103 unsigned int r_type,
1104 const Elf_Internal_Rela *rel,
1105 const Elf_Internal_Rela *relend)
13ae64f3 1106{
142411ca
L		 1107 unsigned int val, type;
1108 unsigned long r_symndx;
1109 struct elf_link_hash_entry *h;
1110 bfd_vma offset;
1111
1112 /* Get the section contents. */
1113 if (contents == NULL)
1114 {
1115 if (elf_section_data (sec)->this_hdr.contents != NULL)
1116 contents = elf_section_data (sec)->this_hdr.contents;
1117 else
1118 {
1119 /* FIXME: How to better handle error condition? */
1120 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1121 return FALSE;
13ae64f3 1122
142411ca
L		 1123 /* Cache the section contents for elf_link_input_bfd. */
1124 elf_section_data (sec)->this_hdr.contents = contents;
1125 }
1126 }
1127
1128 offset = rel->r_offset;
13ae64f3 1129 switch (r_type)
142411ca
L		 1130 {
1131 case R_386_TLS_GD:
1132 case R_386_TLS_LDM:
1133 if (offset < 2 || (rel + 1) >= relend)
1134 return FALSE;
1135
1136 type = bfd_get_8 (abfd, contents + offset - 2);
1137 if (r_type == R_386_TLS_GD)
1138 {
09e8c3bf 1139 /* Check transition from GD access model. Only
142411ca
L		 1140 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1141 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1142 can transit to different access model. */
1143 if ((offset + 10) > sec->size ||
1144 (type != 0x8d && type != 0x04))
1145 return FALSE;
1146
1147 val = bfd_get_8 (abfd, contents + offset - 1);
1148 if (type == 0x04)
1149 {
1150 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1151 if (offset < 3)
1152 return FALSE;
1153
1154 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1155 return FALSE;
1156
1157 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1158 return FALSE;
1159 }
1160 else
1161 {
1162 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1163 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1164 return FALSE;
1165
1166 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1167 return FALSE;
1168 }
1169 }
1170 else
1171 {
1172 /* Check transition from LD access model. Only
1173 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1174 can transit to different access model. */
1175 if (type != 0x8d || (offset + 9) > sec->size)
1176 return FALSE;
1177
1178 val = bfd_get_8 (abfd, contents + offset - 1);
1179 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1180 return FALSE;
1181 }
1182
1183 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1184 return FALSE;
1185
1186 r_symndx = ELF32_R_SYM (rel[1].r_info);
1187 if (r_symndx < symtab_hdr->sh_info)
1188 return FALSE;
1189
1190 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b
L		 1191 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1192 may be versioned. */
142411ca
L		 1193 return (h != NULL
1194 && h->root.root.string != NULL
1195 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1196 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
c4fb387b
L		 1197 && (strncmp (h->root.root.string, "___tls_get_addr",
1198 15) == 0));
142411ca
L		 1199
1200 case R_386_TLS_IE:
1201 /* Check transition from IE access model:
1202 movl foo@indntpoff(%rip), %eax
1203 movl foo@indntpoff(%rip), %reg
1204 addl foo@indntpoff(%rip), %reg
1205 */
1206
1207 if (offset < 1 || (offset + 4) > sec->size)
1208 return FALSE;
1209
1210 /* Check "movl foo@tpoff(%rip), %eax" first. */
1211 val = bfd_get_8 (abfd, contents + offset - 1);
1212 if (val == 0xa1)
1213 return TRUE;
1214
1215 if (offset < 2)
1216 return FALSE;
1217
1218 /* Check movl|addl foo@tpoff(%rip), %reg. */
1219 type = bfd_get_8 (abfd, contents + offset - 2);
1220 return ((type == 0x8b || type == 0x03)
1221 && (val & 0xc7) == 0x05);
1222
1223 case R_386_TLS_GOTIE:
1224 case R_386_TLS_IE_32:
1225 /* Check transition from {IE_32,GOTIE} access model:
1226 subl foo@{tpoff,gontoff}(%reg1), %reg2
1227 movl foo@{tpoff,gontoff}(%reg1), %reg2
1228 addl foo@{tpoff,gontoff}(%reg1), %reg2
1229 */
1230
1231 if (offset < 2 || (offset + 4) > sec->size)
1232 return FALSE;
1233
1234 val = bfd_get_8 (abfd, contents + offset - 1);
1235 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1236 return FALSE;
1237
1238 type = bfd_get_8 (abfd, contents + offset - 2);
1239 return type == 0x8b || type == 0x2b || type == 0x03;
1240
1241 case R_386_TLS_GOTDESC:
1242 /* Check transition from GDesc access model:
1243 leal x@tlsdesc(%ebx), %eax
1244
1245 Make sure it's a leal adding ebx to a 32-bit offset
1246 into any register, although it's probably almost always
1247 going to be eax. */
1248
1249 if (offset < 2 || (offset + 4) > sec->size)
1250 return FALSE;
1251
1252 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1253 return FALSE;
1254
1255 val = bfd_get_8 (abfd, contents + offset - 1);
1256 return (val & 0xc7) == 0x83;
1257
1258 case R_386_TLS_DESC_CALL:
1259 /* Check transition from GDesc access model:
1260 call *x@tlsdesc(%rax)
1261 */
1262 if (offset + 2 <= sec->size)
1263 {
1264 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM		 1265 static const unsigned char call[] = { 0xff, 0x10 };
1266 return memcmp (contents + offset, call, 2) == 0;
142411ca
L		 1267 }
1268
1269 return FALSE;
1270
1271 default:
1272 abort ();
1273 }
1274}
1275
1276/* Return TRUE if the TLS access transition is OK or no transition
1277 will be performed. Update R_TYPE if there is a transition. */
1278
1279static bfd_boolean
1280elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1281 asection *sec, bfd_byte *contents,
1282 Elf_Internal_Shdr *symtab_hdr,
1283 struct elf_link_hash_entry **sym_hashes,
1284 unsigned int *r_type, int tls_type,
1285 const Elf_Internal_Rela *rel,
1286 const Elf_Internal_Rela *relend,
4c544807
L		 1287 struct elf_link_hash_entry *h,
1288 unsigned long r_symndx)
142411ca
L		 1289{
1290 unsigned int from_type = *r_type;
1291 unsigned int to_type = from_type;
1292 bfd_boolean check = TRUE;
1293
bb1cb422
L		 1294 /* Skip TLS transition for functions. */
1295 if (h != NULL
1296 && (h->type == STT_FUNC
1297 || h->type == STT_GNU_IFUNC))
1298 return TRUE;
1299
142411ca 1300 switch (from_type)
13ae64f3
JJ		 1301 {
1302 case R_386_TLS_GD:
67a4f2b7
AO		 1303 case R_386_TLS_GOTDESC:
1304 case R_386_TLS_DESC_CALL:
13ae64f3 1305 case R_386_TLS_IE_32:
37e55690
JJ		 1306 case R_386_TLS_IE:
1307 case R_386_TLS_GOTIE:
1d85728f 1308 if (info->executable)
142411ca
L		 1309 {
1310 if (h == NULL)
1311 to_type = R_386_TLS_LE_32;
1312 else if (from_type != R_386_TLS_IE
1313 && from_type != R_386_TLS_GOTIE)
1314 to_type = R_386_TLS_IE_32;
1315 }
1316
1317 /* When we are called from elf_i386_relocate_section, CONTENTS
1318 isn't NULL and there may be additional transitions based on
1319 TLS_TYPE. */
1320 if (contents != NULL)
1321 {
1322 unsigned int new_to_type = to_type;
1323
1d85728f 1324 if (info->executable
142411ca
L		 1325 && h != NULL
1326 && h->dynindx == -1
1327 && (tls_type & GOT_TLS_IE))
1328 new_to_type = R_386_TLS_LE_32;
1329
1330 if (to_type == R_386_TLS_GD
1331 || to_type == R_386_TLS_GOTDESC
1332 || to_type == R_386_TLS_DESC_CALL)
1333 {
1334 if (tls_type == GOT_TLS_IE_POS)
1335 new_to_type = R_386_TLS_GOTIE;
1336 else if (tls_type & GOT_TLS_IE)
1337 new_to_type = R_386_TLS_IE_32;
1338 }
1339
1340 /* We checked the transition before when we were called from
1341 elf_i386_check_relocs. We only want to check the new
1342 transition which hasn't been checked before. */
1343 check = new_to_type != to_type && from_type == to_type;
1344 to_type = new_to_type;
1345 }
1346
1347 break;
1348
13ae64f3 1349 case R_386_TLS_LDM:
1d85728f 1350 if (info->executable)
142411ca
L		 1351 to_type = R_386_TLS_LE_32;
1352 break;
1353
1354 default:
1355 return TRUE;
1356 }
1357
1358 /* Return TRUE if there is no transition. */
1359 if (from_type == to_type)
1360 return TRUE;
1361
1362 /* Check if the transition can be performed. */
1363 if (check
1364 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1365 symtab_hdr, sym_hashes,
1366 from_type, rel, relend))
1367 {
2f629d23 1368 reloc_howto_type *from, *to;
4c544807 1369 const char *name;
142411ca
L		 1370
1371 from = elf_i386_rtype_to_howto (abfd, from_type);
1372 to = elf_i386_rtype_to_howto (abfd, to_type);
1373
4c544807
L		 1374 if (h)
1375 name = h->root.root.string;
1376 else
1377 {
4c544807 1378 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1379
4c544807 1380 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1381 if (htab == NULL)
1382 name = "*unknown*";
1383 else
1384 {
1385 Elf_Internal_Sym *isym;
1386
1387 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1388 abfd, r_symndx);
1389 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1390 }
4c544807
L		 1391 }
1392
142411ca
L		 1393 (*_bfd_error_handler)
1394 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1395 "in section `%A' failed"),
4c544807 1396 abfd, sec, from->name, to->name, name,
142411ca
L		 1397 (unsigned long) rel->r_offset);
1398 bfd_set_error (bfd_error_bad_value);
1399 return FALSE;
13ae64f3
JJ		 1400 }
1401
142411ca
L		 1402 *r_type = to_type;
1403 return TRUE;
13ae64f3
JJ		 1404}
1405
252b5132 1406/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1407 calculate needed space in the global offset table, procedure linkage
1408 table, and dynamic reloc sections. */
252b5132 1409
b34976b6 1410static bfd_boolean
55fd94b0
AM		 1411elf_i386_check_relocs (bfd *abfd,
1412 struct bfd_link_info *info,
1413 asection *sec,
1414 const Elf_Internal_Rela *relocs)
252b5132 1415{
6725bdbf 1416 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1417 Elf_Internal_Shdr *symtab_hdr;
1418 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1419 const Elf_Internal_Rela *rel;
1420 const Elf_Internal_Rela *rel_end;
252b5132
RH		 1421 asection *sreloc;
1422
1049f94e 1423 if (info->relocatable)
b34976b6 1424 return TRUE;
252b5132 1425
0ffa91dd
NC		 1426 BFD_ASSERT (is_i386_elf (abfd));
1427
6725bdbf 1428 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1429 if (htab == NULL)
1430 return FALSE;
1431
0ffa91dd 1432 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1433 sym_hashes = elf_sym_hashes (abfd);
252b5132 1434
252b5132
RH		 1435 sreloc = NULL;
1436
1437 rel_end = relocs + sec->reloc_count;
1438 for (rel = relocs; rel < rel_end; rel++)
1439 {
13ae64f3 1440 unsigned int r_type;
252b5132
RH		 1441 unsigned long r_symndx;
1442 struct elf_link_hash_entry *h;
4c544807
L		 1443 Elf_Internal_Sym *isym;
1444 const char *name;
06a6a421 1445 bfd_boolean size_reloc;
252b5132
RH		 1446
1447 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1448 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1449
d9bc7a44 1450 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1451 {
d003868e
AM		 1452 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1453 abfd,
8f615d07 1454 r_symndx);
b34976b6 1455 return FALSE;
f5f31454
L		 1456 }
1457
252b5132 1458 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1459 {
1460 /* A local symbol. */
c2e61a4e
L		 1461 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1462 abfd, r_symndx);
1463 if (isym == NULL)
1464 return FALSE;
c25bc9fc
L		 1465
1466 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1467 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1468 {
9fff0c39 1469 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1470 if (h == NULL)
c2e61a4e 1471 return FALSE;
6bbec505 1472
c25bc9fc
L		 1473 /* Fake a STT_GNU_IFUNC symbol. */
1474 h->type = STT_GNU_IFUNC;
1475 h->def_regular = 1;
1476 h->ref_regular = 1;
1477 h->forced_local = 1;
1478 h->root.type = bfd_link_hash_defined;
1479 }
1480 else
1481 h = NULL;
1482 }
252b5132 1483 else
71cb9464 1484 {
4c544807 1485 isym = NULL;
71cb9464
L		 1486 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1487 while (h->root.type == bfd_link_hash_indirect
1488 || h->root.type == bfd_link_hash_warning)
1489 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1490 }
cbe950e9 1491
c25bc9fc
L		 1492 if (h != NULL)
1493 {
cbe950e9
L		 1494 /* Create the ifunc sections for static executables. If we
1495 never see an indirect function symbol nor we are building
1496 a static executable, those sections will be empty and
1497 won't appear in output. */
1498 switch (r_type)
1499 {
1500 default:
1501 break;
1502
1503 case R_386_32:
1504 case R_386_PC32:
1505 case R_386_PLT32:
1506 case R_386_GOT32:
1507 case R_386_GOTOFF:
9d4057ee
AM		 1508 if (htab->elf.dynobj == NULL)
1509 htab->elf.dynobj = abfd;
1510 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1511 return FALSE;
cbe950e9
L		 1512 break;
1513 }
1514
ad1e85de
L		 1515 /* It is referenced by a non-shared object. */
1516 h->ref_regular = 1;
61315175 1517 h->root.non_ir_ref = 1;
71cb9464 1518 }
252b5132 1519
142411ca
L		 1520 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1521 symtab_hdr, sym_hashes,
1522 &r_type, GOT_UNKNOWN,
23209a78 1523 rel, rel_end, h, r_symndx))
c2e61a4e 1524 return FALSE;
13ae64f3
JJ		 1525
1526 switch (r_type)
252b5132 1527 {
37e55690
JJ		 1528 case R_386_TLS_LDM:
1529 htab->tls_ldm_got.refcount += 1;
1530 goto create_got;
1531
1532 case R_386_PLT32:
1533 /* This symbol requires a procedure linkage table entry. We
1534 actually build the entry in adjust_dynamic_symbol,
1535 because this might be a case of linking PIC code which is
1536 never referenced by a dynamic object, in which case we
1537 don't need to generate a procedure linkage table entry
1538 after all. */
1539
1540 /* If this is a local symbol, we resolve it directly without
1541 creating a procedure linkage table entry. */
1542 if (h == NULL)
1543 continue;
1544
f5385ebf 1545 h->needs_plt = 1;
37e55690
JJ		 1546 h->plt.refcount += 1;
1547 break;
1548
6a3e1bae 1549 case R_386_SIZE32:
06a6a421 1550 size_reloc = TRUE;
6a3e1bae
L		 1551 goto do_size;
1552
13ae64f3 1553 case R_386_TLS_IE_32:
37e55690
JJ		 1554 case R_386_TLS_IE:
1555 case R_386_TLS_GOTIE:
1d85728f 1556 if (!info->executable)
13ae64f3 1557 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1558 /* Fall through */
1559
252b5132 1560 case R_386_GOT32:
13ae64f3 1561 case R_386_TLS_GD:
67a4f2b7
AO		 1562 case R_386_TLS_GOTDESC:
1563 case R_386_TLS_DESC_CALL:
252b5132 1564 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1565 {
1566 int tls_type, old_tls_type;
1567
1568 switch (r_type)
1569 {
1570 default:
1571 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1572 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1573 case R_386_TLS_GOTDESC:
1574 case R_386_TLS_DESC_CALL:
1575 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1576 case R_386_TLS_IE_32:
1577 if (ELF32_R_TYPE (rel->r_info) == r_type)
1578 tls_type = GOT_TLS_IE_NEG;
1579 else
ebcfb3c0
JJ		 1580 /* If this is a GD->IE transition, we may use either of
1581 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1582 tls_type = GOT_TLS_IE;
1583 break;
1584 case R_386_TLS_IE:
1585 case R_386_TLS_GOTIE:
1586 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1587 }
1588
1589 if (h != NULL)
1590 {
1591 h->got.refcount += 1;
1592 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1593 }
1594 else
1595 {
1596 bfd_signed_vma *local_got_refcounts;
1597
1598 /* This is a global offset table entry for a local symbol. */
1599 local_got_refcounts = elf_local_got_refcounts (abfd);
1600 if (local_got_refcounts == NULL)
1601 {
1602 bfd_size_type size;
1603
1604 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1605 size *= (sizeof (bfd_signed_vma)
1606 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1607 local_got_refcounts = (bfd_signed_vma *)
1608 bfd_zalloc (abfd, size);
13ae64f3 1609 if (local_got_refcounts == NULL)
c2e61a4e 1610 return FALSE;
13ae64f3 1611 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1612 elf_i386_local_tlsdesc_gotent (abfd)
1613 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1614 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1615 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1616 }
1617 local_got_refcounts[r_symndx] += 1;
1618 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1619 }
1620
37e55690
JJ		 1621 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1622 tls_type |= old_tls_type;
13ae64f3
JJ		 1623 /* If a TLS symbol is accessed using IE at least once,
1624 there is no point to use dynamic model for it. */
ebcfb3c0 1625 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1626 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1627 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1628 {
67a4f2b7 1629 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1630 tls_type = old_tls_type;
67a4f2b7
AO		 1631 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1632 && GOT_TLS_GD_ANY_P (tls_type))
1633 tls_type |= old_tls_type;
13ae64f3
JJ		 1634 else
1635 {
09a24cbf 1636 if (h)
4c544807
L		 1637 name = h->root.root.string;
1638 else
1639 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1640 NULL);
13ae64f3 1641 (*_bfd_error_handler)
d003868e 1642 (_("%B: `%s' accessed both as normal and "
55fd94b0 1643 "thread local symbol"),
4c544807 1644 abfd, name);
68c4a57e 1645 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1646 return FALSE;
13ae64f3
JJ		 1647 }
1648 }
1649
1650 if (old_tls_type != tls_type)
1651 {
1652 if (h != NULL)
1653 elf_i386_hash_entry (h)->tls_type = tls_type;
1654 else
1655 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1656 }
1657 }
0ac8d2ca
AM		 1658 /* Fall through */
1659
1660 case R_386_GOTOFF:
1661 case R_386_GOTPC:
13ae64f3 1662 create_got:
6de2ae4a 1663 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 1664 {
1665 if (htab->elf.dynobj == NULL)
1666 htab->elf.dynobj = abfd;
6de2ae4a 1667 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1668 return FALSE;
0ac8d2ca 1669 }
37e55690
JJ		 1670 if (r_type != R_386_TLS_IE)
1671 break;
1672 /* Fall through */
252b5132 1673
37e55690
JJ		 1674 case R_386_TLS_LE_32:
1675 case R_386_TLS_LE:
1d85728f 1676 if (info->executable)
37e55690 1677 break;
bffbf940 1678 info->flags |= DF_STATIC_TLS;
b34976b6 1679 /* Fall through */
252b5132
RH		 1680
1681 case R_386_32:
1682 case R_386_PC32:
710ab287 1683 if (h != NULL && info->executable)
6725bdbf 1684 {
12d0ee4a 1685 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1686 need a copy reloc. We can't check reliably at this
1687 stage whether the section is read-only, as input
1688 sections have not yet been mapped to output sections.
1689 Tentatively set the flag for now, and correct in
1690 adjust_dynamic_symbol. */
f5385ebf 1691 h->non_got_ref = 1;
12d0ee4a
AM		 1692
1693 /* We may need a .plt entry if the function this reloc
1694 refers to is in a shared lib. */
51b64d56 1695 h->plt.refcount += 1;
c6585bbb 1696 if (r_type != R_386_PC32)
f5385ebf 1697 h->pointer_equality_needed = 1;
6725bdbf 1698 }
7843f00e 1699
06a6a421 1700 size_reloc = FALSE;
6a3e1bae 1701do_size:
252b5132 1702 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1703 against a global symbol, or a non PC relative reloc
1704 against a local symbol, then we need to copy the reloc
1705 into the shared library. However, if we are linking with
1706 -Bsymbolic, we do not need to copy a reloc against a
1707 global symbol which is defined in an object we are
1708 including in the link (i.e., DEF_REGULAR is set). At
1709 this point we have not seen all the input files, so it is
1710 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1711 later (it is never cleared). In case of a weak definition,
1712 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1713 a shared library. We account for that possibility below by
1f655a09
L		 1714 storing information in the relocs_copied field of the hash
1715 table entry. A similar situation occurs when creating
1716 shared libraries and symbol visibility changes render the
12d0ee4a 1717 symbol local.
56882138 1718
12d0ee4a
AM		 1719 If on the other hand, we are creating an executable, we
1720 may need to keep relocations for symbols satisfied by a
1721 dynamic library if we manage to avoid copy relocs for the
1722 symbol. */
1723 if ((info->shared
1724 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1725 && (r_type != R_386_PC32
12d0ee4a 1726 || (h != NULL
55255dae 1727 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1728 || h->root.type == bfd_link_hash_defweak
f5385ebf 1729 || !h->def_regular))))
a23b6845
AM		 1730 || (ELIMINATE_COPY_RELOCS
1731 && !info->shared
12d0ee4a
AM		 1732 && (sec->flags & SEC_ALLOC) != 0
1733 && h != NULL
12d0ee4a 1734 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1735 || !h->def_regular)))
252b5132 1736 {
e03a8ed8
L		 1737 struct elf_dyn_relocs *p;
1738 struct elf_dyn_relocs **head;
ec338859 1739
12d0ee4a
AM		 1740 /* We must copy these reloc types into the output file.
1741 Create a reloc section in dynobj and make room for
1742 this reloc. */
252b5132
RH		 1743 if (sreloc == NULL)
1744 {
0ac8d2ca
AM		 1745 if (htab->elf.dynobj == NULL)
1746 htab->elf.dynobj = abfd;
1747
83bac4b0
NC		 1748 sreloc = _bfd_elf_make_dynamic_reloc_section
1749 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1750
252b5132 1751 if (sreloc == NULL)
c2e61a4e 1752 return FALSE;
252b5132
RH		 1753 }
1754
0c715baa
AM		 1755 /* If this is a global symbol, we count the number of
1756 relocations we need for this symbol. */
1757 if (h != NULL)
252b5132 1758 {
ec338859 1759 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
0c715baa
AM		 1760 }
1761 else
1762 {
ec338859
AM		 1763 /* Track dynamic relocs needed for local syms too.
1764 We really need local syms available to do this
1765 easily. Oh well. */
87d72d41 1766 void **vpp;
ec338859 1767 asection *s;
87d72d41
AM		 1768
1769 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1770 abfd, r_symndx);
1771 if (isym == NULL)
1772 return FALSE;
1773
1774 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1775 if (s == NULL)
87d72d41 1776 s = sec;
ec338859 1777
e81d3500 1778 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1779 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1780 }
1781
1782 p = *head;
1783 if (p == NULL || p->sec != sec)
1784 {
1785 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1786 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1787 amt);
ec338859 1788 if (p == NULL)
c2e61a4e 1789 return FALSE;
ec338859
AM		 1790 p->next = *head;
1791 *head = p;
1792 p->sec = sec;
1793 p->count = 0;
1794 p->pc_count = 0;
252b5132 1795 }
ec338859
AM		 1796
1797 p->count += 1;
06a6a421
L		 1798 /* Count size relocation as PC-relative relocation. */
1799 if (r_type == R_386_PC32 || size_reloc)
ec338859 1800 p->pc_count += 1;
252b5132 1801 }
252b5132
RH		 1802 break;
1803
1804 /* This relocation describes the C++ object vtable hierarchy.
1805 Reconstruct it for later use during GC. */
1806 case R_386_GNU_VTINHERIT:
d17e0c6e 1807 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1808 return FALSE;
252b5132
RH		 1809 break;
1810
1811 /* This relocation describes which C++ vtable entries are actually
1812 used. Record for later use during GC. */
1813 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1814 BFD_ASSERT (h != NULL);
1815 if (h != NULL
1816 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c2e61a4e 1817 return FALSE;
252b5132
RH		 1818 break;
1819
1820 default:
1821 break;
1822 }
1823 }
1824
b34976b6 1825 return TRUE;
252b5132
RH		 1826}
1827
1828/* Return the section that should be marked against GC for a given
1829 relocation. */
1830
1831static asection *
55fd94b0 1832elf_i386_gc_mark_hook (asection *sec,
07adf181 1833 struct bfd_link_info *info,
55fd94b0
AM		 1834 Elf_Internal_Rela *rel,
1835 struct elf_link_hash_entry *h,
1836 Elf_Internal_Sym *sym)
252b5132
RH		 1837{
1838 if (h != NULL)
07adf181
AM		 1839 switch (ELF32_R_TYPE (rel->r_info))
1840 {
1841 case R_386_GNU_VTINHERIT:
1842 case R_386_GNU_VTENTRY:
1843 return NULL;
1844 }
1845
1846 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1847}
1848
1849/* Update the got entry reference counts for the section being removed. */
1850
b34976b6 1851static bfd_boolean
55fd94b0
AM		 1852elf_i386_gc_sweep_hook (bfd *abfd,
1853 struct bfd_link_info *info,
1854 asection *sec,
1855 const Elf_Internal_Rela *relocs)
252b5132 1856{
4dfe6ac6 1857 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 1858 Elf_Internal_Shdr *symtab_hdr;
1859 struct elf_link_hash_entry **sym_hashes;
1860 bfd_signed_vma *local_got_refcounts;
1861 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1862
7dda2462
TG		 1863 if (info->relocatable)
1864 return TRUE;
1865
4dfe6ac6
NC		 1866 htab = elf_i386_hash_table (info);
1867 if (htab == NULL)
1868 return FALSE;
1869
ec338859 1870 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1871
0ffa91dd 1872 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 1873 sym_hashes = elf_sym_hashes (abfd);
1874 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1875
1876 relend = relocs + sec->reloc_count;
1877 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1878 {
1879 unsigned long r_symndx;
1880 unsigned int r_type;
1881 struct elf_link_hash_entry *h = NULL;
37e55690 1882
26e41594
AM		 1883 r_symndx = ELF32_R_SYM (rel->r_info);
1884 if (r_symndx >= symtab_hdr->sh_info)
1885 {
26e41594 1886 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1887 while (h->root.type == bfd_link_hash_indirect
1888 || h->root.type == bfd_link_hash_warning)
1889 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1890 }
bb1cb422
L		 1891 else
1892 {
1893 /* A local symbol. */
1894 Elf_Internal_Sym *isym;
1895
1896 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1897 abfd, r_symndx);
1898
1899 /* Check relocation against local STT_GNU_IFUNC symbol. */
1900 if (isym != NULL
1901 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1902 {
1903 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
1904 if (h == NULL)
1905 abort ();
1906 }
1907 }
0c715baa 1908
3db2e7dd
L		 1909 if (h)
1910 {
1911 struct elf_i386_link_hash_entry *eh;
1912 struct elf_dyn_relocs **pp;
1913 struct elf_dyn_relocs *p;
1914
1915 eh = (struct elf_i386_link_hash_entry *) h;
1916 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1917 if (p->sec == sec)
1918 {
1919 /* Everything must go for SEC. */
1920 *pp = p->next;
1921 break;
1922 }
1923 }
1924
26e41594 1925 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 1926 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1927 symtab_hdr, sym_hashes,
1928 &r_type, GOT_UNKNOWN,
23209a78 1929 rel, relend, h, r_symndx))
142411ca
L		 1930 return FALSE;
1931
26e41594
AM		 1932 switch (r_type)
1933 {
1934 case R_386_TLS_LDM:
4dfe6ac6
NC		 1935 if (htab->tls_ldm_got.refcount > 0)
1936 htab->tls_ldm_got.refcount -= 1;
26e41594 1937 break;
0c715baa 1938
26e41594 1939 case R_386_TLS_GD:
67a4f2b7
AO		 1940 case R_386_TLS_GOTDESC:
1941 case R_386_TLS_DESC_CALL:
26e41594
AM		 1942 case R_386_TLS_IE_32:
1943 case R_386_TLS_IE:
1944 case R_386_TLS_GOTIE:
1945 case R_386_GOT32:
1946 if (h != NULL)
1947 {
1948 if (h->got.refcount > 0)
1949 h->got.refcount -= 1;
bb1cb422
L		 1950 if (h->type == STT_GNU_IFUNC)
1951 {
1952 if (h->plt.refcount > 0)
1953 h->plt.refcount -= 1;
1954 }
26e41594
AM		 1955 }
1956 else if (local_got_refcounts != NULL)
1957 {
1958 if (local_got_refcounts[r_symndx] > 0)
1959 local_got_refcounts[r_symndx] -= 1;
1960 }
1961 break;
0c715baa 1962
26e41594
AM		 1963 case R_386_32:
1964 case R_386_PC32:
1788fc08 1965 case R_386_SIZE32:
3db2e7dd
L		 1966 if (info->shared
1967 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM		 1968 break;
1969 /* Fall through */
6725bdbf 1970
26e41594
AM		 1971 case R_386_PLT32:
1972 if (h != NULL)
1973 {
1974 if (h->plt.refcount > 0)
1975 h->plt.refcount -= 1;
1976 }
1977 break;
dd5724d5 1978
bb1cb422
L		 1979 case R_386_GOTOFF:
1980 if (h != NULL && h->type == STT_GNU_IFUNC)
1981 {
1982 if (h->got.refcount > 0)
1983 h->got.refcount -= 1;
1984 if (h->plt.refcount > 0)
1985 h->plt.refcount -= 1;
1986 }
1987 break;
1988
26e41594
AM		 1989 default:
1990 break;
1991 }
1992 }
252b5132 1993
b34976b6 1994 return TRUE;
252b5132
RH		 1995}
1996
1997/* Adjust a symbol defined by a dynamic object and referenced by a
1998 regular object. The current definition is in some section of the
1999 dynamic object, but we're not including those sections. We have to
2000 change the definition to something the rest of the link can
2001 understand. */
2002
b34976b6 2003static bfd_boolean
55fd94b0
AM		 2004elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2005 struct elf_link_hash_entry *h)
252b5132 2006{
6725bdbf 2007 struct elf_i386_link_hash_table *htab;
252b5132 2008 asection *s;
5ca5bb35
L		 2009 struct elf_i386_link_hash_entry *eh;
2010 struct elf_dyn_relocs *p;
252b5132 2011
cbe950e9
L		 2012 /* STT_GNU_IFUNC symbol must go through PLT. */
2013 if (h->type == STT_GNU_IFUNC)
2014 {
73bcf233
L		 2015 /* All local STT_GNU_IFUNC references must be treate as local
2016 calls via local PLT. */
5ca5bb35
L		 2017 if (h->ref_regular
2018 && SYMBOL_CALLS_LOCAL (info, h))
2019 {
73bcf233 2020 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2021 struct elf_dyn_relocs **pp;
2022
2023 eh = (struct elf_i386_link_hash_entry *) h;
2024 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2025 {
2026 pc_count += p->pc_count;
2027 p->count -= p->pc_count;
2028 p->pc_count = 0;
73bcf233 2029 count += p->count;
5ca5bb35
L		 2030 if (p->count == 0)
2031 *pp = p->next;
2032 else
2033 pp = &p->next;
2034 }
2035
73bcf233 2036 if (pc_count || count)
5ca5bb35
L		 2037 {
2038 h->needs_plt = 1;
5ca5bb35 2039 h->non_got_ref = 1;
a5479e5f
L		 2040 if (h->plt.refcount <= 0)
2041 h->plt.refcount = 1;
2042 else
2043 h->plt.refcount += 1;
5ca5bb35
L		 2044 }
2045 }
2046
cbe950e9
L		 2047 if (h->plt.refcount <= 0)
2048 {
2049 h->plt.offset = (bfd_vma) -1;
2050 h->needs_plt = 0;
2051 }
2052 return TRUE;
2053 }
2054
252b5132
RH		 2055 /* If this is a function, put it in the procedure linkage table. We
2056 will fill in the contents of the procedure linkage table later,
2057 when we know the address of the .got section. */
2058 if (h->type == STT_FUNC
f5385ebf 2059 || h->needs_plt)
252b5132 2060 {
6725bdbf 2061 if (h->plt.refcount <= 0
9c7a29a3
AM		 2062 || SYMBOL_CALLS_LOCAL (info, h)
2063 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2064 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2065 {
2066 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2067 file, but the symbol was never referred to by a dynamic
2068 object, or if all references were garbage collected. In
2069 such a case, we don't actually need to build a procedure
2070 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2071 h->plt.offset = (bfd_vma) -1;
f5385ebf 2072 h->needs_plt = 0;
252b5132
RH		 2073 }
2074
b34976b6 2075 return TRUE;
252b5132 2076 }
6725bdbf
AM		 2077 else
2078 /* It's possible that we incorrectly decided a .plt reloc was
2079 needed for an R_386_PC32 reloc to a non-function sym in
2080 check_relocs. We can't decide accurately between function and
2081 non-function syms in check-relocs; Objects loaded later in
2082 the link may change h->type. So fix it now. */
bbd7ec4a 2083 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2084
2085 /* If this is a weak symbol, and there is a real definition, the
2086 processor independent code will have arranged for us to see the
2087 real definition first, and we can just use the same value. */
f6e332e6 2088 if (h->u.weakdef != NULL)
252b5132 2089 {
f6e332e6
AM		 2090 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2091 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2092 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2093 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2094 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2095 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2096 return TRUE;
252b5132
RH		 2097 }
2098
2099 /* This is a reference to a symbol defined by a dynamic object which
2100 is not a function. */
2101
2102 /* If we are creating a shared library, we must presume that the
2103 only references to the symbol are via the global offset table.
2104 For such cases we need not do anything here; the relocations will
2105 be handled correctly by relocate_section. */
2106 if (info->shared)
b34976b6 2107 return TRUE;
252b5132 2108
7843f00e
ILT		 2109 /* If there are no references to this symbol that do not use the
2110 GOT, we don't need to generate a copy reloc. */
f5385ebf 2111 if (!h->non_got_ref)
b34976b6 2112 return TRUE;
7843f00e 2113
8bd621d8
AM		 2114 /* If -z nocopyreloc was given, we won't generate them either. */
2115 if (info->nocopyreloc)
2116 {
f5385ebf 2117 h->non_got_ref = 0;
b34976b6 2118 return TRUE;
8bd621d8
AM		 2119 }
2120
643796e3 2121 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2122 if (htab == NULL)
2123 return FALSE;
643796e3
DJ		 2124
2125 /* If there aren't any dynamic relocs in read-only sections, then
2126 we can keep the dynamic relocs and avoid the copy reloc. This
2127 doesn't work on VxWorks, where we can not have dynamic relocations
2128 (other than copy and jump slot relocations) in an executable. */
23209a78
RM		 2129 if (ELIMINATE_COPY_RELOCS
2130 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2131 {
a23b6845
AM		 2132 eh = (struct elf_i386_link_hash_entry *) h;
2133 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2134 {
2135 s = p->sec->output_section;
2136 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2137 break;
2138 }
2139
a23b6845
AM		 2140 if (p == NULL)
2141 {
f5385ebf 2142 h->non_got_ref = 0;
a23b6845
AM		 2143 return TRUE;
2144 }
ebe50bae
AM		 2145 }
2146
252b5132
RH		 2147 /* We must allocate the symbol in our .dynbss section, which will
2148 become part of the .bss section of the executable. There will be
2149 an entry for this symbol in the .dynsym section. The dynamic
2150 object will contain position independent code, so all references
2151 from the dynamic object to this symbol will go through the global
2152 offset table. The dynamic linker will use the .dynsym entry to
2153 determine the address it must put in the global offset table, so
2154 both the dynamic object and the regular object will refer to the
2155 same memory location for the variable. */
2156
252b5132
RH		 2157 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2158 copy the initial value out of the dynamic object and into the
0ac8d2ca 2159 runtime process image. */
1d7e9d18 2160 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2161 {
eea6121a 2162 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2163 h->needs_copy = 1;
252b5132
RH		 2164 }
2165
0ac8d2ca 2166 s = htab->sdynbss;
252b5132 2167
027297b7 2168 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH		 2169}
2170
6725bdbf 2171/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2172 dynamic relocs. */
6725bdbf 2173
b34976b6 2174static bfd_boolean
eb4ff4d6 2175elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2176{
2177 struct bfd_link_info *info;
2178 struct elf_i386_link_hash_table *htab;
5a15f56f 2179 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2180 struct elf_dyn_relocs *p;
25e762b9 2181 unsigned plt_entry_size;
6725bdbf 2182
e92d460e 2183 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2184 return TRUE;
6725bdbf 2185
cbe950e9 2186 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2187
6725bdbf
AM		 2188 info = (struct bfd_link_info *) inf;
2189 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2190 if (htab == NULL)
2191 return FALSE;
6725bdbf 2192
25e762b9
RM		 2193 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2194
cbe950e9
L		 2195 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2196 here if it is defined and referenced in a non-shared object. */
2197 if (h->type == STT_GNU_IFUNC
2198 && h->def_regular)
25e762b9 2199 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
7b70956d
WN		 2200 plt_entry_size,
2201 plt_entry_size, 4);
cbe950e9
L		 2202 else if (htab->elf.dynamic_sections_created
2203 && h->plt.refcount > 0)
6725bdbf 2204 {
5a15f56f
AM		 2205 /* Make sure this symbol is output as a dynamic symbol.
2206 Undefined weak syms won't yet be marked as dynamic. */
2207 if (h->dynindx == -1
f5385ebf 2208 && !h->forced_local)
5a15f56f 2209 {
c152c796 2210 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2211 return FALSE;
5a15f56f
AM		 2212 }
2213
4e795f50
AM		 2214 if (info->shared
2215 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2216 {
6de2ae4a 2217 asection *s = htab->elf.splt;
6725bdbf 2218
ced53ee5
AM		 2219 /* If this is the first .plt entry, make room for the special
2220 first entry. */
eea6121a 2221 if (s->size == 0)
25e762b9 2222 s->size += plt_entry_size;
6725bdbf 2223
eea6121a 2224 h->plt.offset = s->size;
6725bdbf 2225
ced53ee5
AM		 2226 /* If this symbol is not defined in a regular file, and we are
2227 not generating a shared library, then set the symbol to this
2228 location in the .plt. This is required to make function
2229 pointers compare as equal between the normal executable and
2230 the shared library. */
2231 if (! info->shared
f5385ebf 2232 && !h->def_regular)
ced53ee5
AM		 2233 {
2234 h->root.u.def.section = s;
2235 h->root.u.def.value = h->plt.offset;
2236 }
6725bdbf 2237
ced53ee5 2238 /* Make room for this entry. */
25e762b9 2239 s->size += plt_entry_size;
6725bdbf 2240
ced53ee5
AM		 2241 /* We also need to make an entry in the .got.plt section, which
2242 will be placed in the .got section by the linker script. */
6de2ae4a 2243 htab->elf.sgotplt->size += 4;
6725bdbf 2244
6725bdbf 2245 /* We also need to make an entry in the .rel.plt section. */
6de2ae4a 2246 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
e1f98742 2247 htab->elf.srelplt->reloc_count++;
eac338cf 2248
23209a78
RM		 2249 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
2250 && !info->shared)
eac338cf
PB		 2251 {
2252 /* VxWorks has a second set of relocations for each PLT entry
2253 in executables. They go in a separate relocation section,
2254 which is processed by the kernel loader. */
2255
2256 /* There are two relocations for the initial PLT entry: an
2257 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2258 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2259
25e762b9 2260 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2261 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2262
2263 /* There are two extra relocations for each subsequent PLT entry:
2264 an R_386_32 relocation for the GOT entry, and an R_386_32
2265 relocation for the PLT entry. */
2266
2267 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2268 }
6725bdbf 2269 }
ced53ee5
AM		 2270 else
2271 {
51b64d56 2272 h->plt.offset = (bfd_vma) -1;
f5385ebf 2273 h->needs_plt = 0;
ced53ee5 2274 }
6725bdbf
AM		 2275 }
2276 else
2277 {
51b64d56 2278 h->plt.offset = (bfd_vma) -1;
f5385ebf 2279 h->needs_plt = 0;
6725bdbf
AM		 2280 }
2281
67a4f2b7
AO		 2282 eh->tlsdesc_got = (bfd_vma) -1;
2283
37e55690 2284 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2285 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2286 if (h->got.refcount > 0
1d85728f 2287 && info->executable
13ae64f3 2288 && h->dynindx == -1
37e55690 2289 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2290 h->got.offset = (bfd_vma) -1;
13ae64f3 2291 else if (h->got.refcount > 0)
6725bdbf 2292 {
0ac8d2ca 2293 asection *s;
b34976b6 2294 bfd_boolean dyn;
13ae64f3 2295 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2296
5a15f56f
AM		 2297 /* Make sure this symbol is output as a dynamic symbol.
2298 Undefined weak syms won't yet be marked as dynamic. */
2299 if (h->dynindx == -1
f5385ebf 2300 && !h->forced_local)
5a15f56f 2301 {
c152c796 2302 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2303 return FALSE;
5a15f56f
AM		 2304 }
2305
6de2ae4a 2306 s = htab->elf.sgot;
67a4f2b7
AO		 2307 if (GOT_TLS_GDESC_P (tls_type))
2308 {
6de2ae4a 2309 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2310 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2311 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2312 h->got.offset = (bfd_vma) -2;
2313 }
2314 if (! GOT_TLS_GDESC_P (tls_type)
2315 || GOT_TLS_GD_P (tls_type))
2316 {
2317 h->got.offset = s->size;
2318 s->size += 4;
2319 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2320 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2321 s->size += 4;
2322 }
ebe50bae 2323 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2324 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2325 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2326 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2327 need two), R_386_TLS_GD needs one if local symbol and two if
2328 global. */
2329 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2330 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2331 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2332 || (tls_type & GOT_TLS_IE))
6de2ae4a 2333 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2334 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2335 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2336 else if (! GOT_TLS_GDESC_P (tls_type)
2337 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2338 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 2339 && (info->shared
2340 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2341 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2342 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2343 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2344 }
2345 else
51b64d56 2346 h->got.offset = (bfd_vma) -1;
6725bdbf 2347
5a15f56f 2348 if (eh->dyn_relocs == NULL)
b34976b6 2349 return TRUE;
5a15f56f 2350
0c715baa
AM		 2351 /* In the shared -Bsymbolic case, discard space allocated for
2352 dynamic pc-relative relocs against symbols which turn out to be
2353 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2354 space for pc-relative relocs that have become local due to symbol
2355 visibility changes. */
0c715baa
AM		 2356
2357 if (info->shared)
5a15f56f 2358 {
09695f56
AM		 2359 /* The only reloc that uses pc_count is R_386_PC32, which will
2360 appear on a call or on something like ".long foo - .". We
2361 want calls to protected symbols to resolve directly to the
2362 function rather than going via the plt. If people want
2363 function pointer comparisons to work as expected then they
2364 should avoid writing assembly like ".long foo - .". */
2365 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2366 {
e03a8ed8 2367 struct elf_dyn_relocs **pp;
0c715baa
AM		 2368
2369 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2370 {
2371 p->count -= p->pc_count;
2372 p->pc_count = 0;
2373 if (p->count == 0)
2374 *pp = p->next;
2375 else
2376 pp = &p->next;
2377 }
5a15f56f 2378 }
4e795f50 2379
23209a78 2380 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2381 {
e03a8ed8 2382 struct elf_dyn_relocs **pp;
3348747a
NS		 2383 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2384 {
2385 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2386 *pp = p->next;
2387 else
2388 pp = &p->next;
2389 }
2390 }
2391
4e795f50 2392 /* Also discard relocs on undefined weak syms with non-default
3348747a 2393 visibility. */
22d606e9 2394 if (eh->dyn_relocs != NULL
4e795f50 2395 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2396 {
2397 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2398 eh->dyn_relocs = NULL;
2399
2400 /* Make sure undefined weak symbols are output as a dynamic
2401 symbol in PIEs. */
2402 else if (h->dynindx == -1
2403 && !h->forced_local)
2404 {
2405 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2406 return FALSE;
2407 }
2408 }
0c715baa 2409 }
a23b6845 2410 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2411 {
2412 /* For the non-shared case, discard space for relocs against
2413 symbols which turn out to need copy relocs or are not
2414 dynamic. */
2415
f5385ebf
AM		 2416 if (!h->non_got_ref
2417 && ((h->def_dynamic
2418 && !h->def_regular)
ebe50bae 2419 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2420 && (h->root.type == bfd_link_hash_undefweak
2421 || h->root.type == bfd_link_hash_undefined))))
2422 {
2423 /* Make sure this symbol is output as a dynamic symbol.
2424 Undefined weak syms won't yet be marked as dynamic. */
2425 if (h->dynindx == -1
f5385ebf 2426 && !h->forced_local)
0c715baa 2427 {
c152c796 2428 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2429 return FALSE;
0c715baa 2430 }
5a15f56f 2431
0c715baa
AM		 2432 /* If that succeeded, we know we'll be keeping all the
2433 relocs. */
2434 if (h->dynindx != -1)
2435 goto keep;
2436 }
2437
2438 eh->dyn_relocs = NULL;
2439
ec338859 2440 keep: ;
5a15f56f
AM		 2441 }
2442
0c715baa
AM		 2443 /* Finally, allocate space. */
2444 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2445 {
e7c33416
NC		 2446 asection *sreloc;
2447
cbe950e9 2448 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2449
2450 BFD_ASSERT (sreloc != NULL);
eea6121a 2451 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2452 }
2453
b34976b6 2454 return TRUE;
6725bdbf
AM		 2455}
2456
c25bc9fc
L		 2457/* Allocate space in .plt, .got and associated reloc sections for
2458 local dynamic relocs. */
2459
2460static bfd_boolean
2461elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2462{
2463 struct elf_link_hash_entry *h
2464 = (struct elf_link_hash_entry *) *slot;
2465
2466 if (h->type != STT_GNU_IFUNC
2467 || !h->def_regular
2468 || !h->ref_regular
2469 || !h->forced_local
2470 || h->root.type != bfd_link_hash_defined)
2471 abort ();
2472
2473 return elf_i386_allocate_dynrelocs (h, inf);
2474}
2475
0c715baa
AM		 2476/* Find any dynamic relocs that apply to read-only sections. */
2477
b34976b6 2478static bfd_boolean
eb4ff4d6 2479elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2480{
2481 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2482 struct elf_dyn_relocs *p;
0c715baa 2483
aa715242
L		 2484 /* Skip local IFUNC symbols. */
2485 if (h->forced_local && h->type == STT_GNU_IFUNC)
2486 return TRUE;
2487
0c715baa
AM		 2488 eh = (struct elf_i386_link_hash_entry *) h;
2489 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2490 {
2491 asection *s = p->sec->output_section;
2492
2493 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2494 {
2495 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2496
2497 info->flags |= DF_TEXTREL;
2498
b70321a2
L		 2499 if (info->warn_shared_textrel && info->shared)
2500 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
2501 p->sec->owner, h->root.root.string,
2502 p->sec);
2503
0c715baa 2504 /* Not an error, just cut short the traversal. */
b34976b6 2505 return FALSE;
0c715baa
AM		 2506 }
2507 }
b34976b6 2508 return TRUE;
0c715baa
AM		 2509}
2510
daa67607
L		 2511/* Convert
2512 mov foo@GOT(%reg), %reg
2513 to
2514 lea foo@GOTOFF(%reg), %reg
2515 with the local symbol, foo. */
2516
2517static bfd_boolean
2518elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
2519 struct bfd_link_info *link_info)
2520{
2521 Elf_Internal_Shdr *symtab_hdr;
2522 Elf_Internal_Rela *internal_relocs;
2523 Elf_Internal_Rela *irel, *irelend;
2524 bfd_byte *contents;
2525 struct elf_i386_link_hash_table *htab;
2526 bfd_boolean changed_contents;
2527 bfd_boolean changed_relocs;
2528 bfd_signed_vma *local_got_refcounts;
2529
2530 /* Don't even try to convert non-ELF outputs. */
2531 if (!is_elf_hash_table (link_info->hash))
2532 return FALSE;
2533
fbdc86d9 2534 /* Nothing to do if there are no codes, no relocations or no output. */
daa67607 2535 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
fbdc86d9
L		 2536 || sec->reloc_count == 0
2537 || discarded_section (sec))
daa67607
L		 2538 return TRUE;
2539
2540 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2541
2542 /* Load the relocations for this section. */
2543 internal_relocs = (_bfd_elf_link_read_relocs
2544 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2545 link_info->keep_memory));
2546 if (internal_relocs == NULL)
2547 return FALSE;
2548
2549 htab = elf_i386_hash_table (link_info);
2550 changed_contents = FALSE;
2551 changed_relocs = FALSE;
2552 local_got_refcounts = elf_local_got_refcounts (abfd);
2553
2554 /* Get the section contents. */
2555 if (elf_section_data (sec)->this_hdr.contents != NULL)
2556 contents = elf_section_data (sec)->this_hdr.contents;
2557 else
2558 {
2559 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2560 goto error_return;
2561 }
2562
2563 irelend = internal_relocs + sec->reloc_count;
2564 for (irel = internal_relocs; irel < irelend; irel++)
2565 {
2566 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2567 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2568 unsigned int indx;
2569 struct elf_link_hash_entry *h;
2570
2571 if (r_type != R_386_GOT32)
2572 continue;
2573
2574 /* Get the symbol referred to by the reloc. */
2575 if (r_symndx < symtab_hdr->sh_info)
2576 {
2577 Elf_Internal_Sym *isym;
2578
2579 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2580 abfd, r_symndx);
2581
2582 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2583 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
2584 && bfd_get_8 (input_bfd,
2585 contents + irel->r_offset - 2) == 0x8b)
2586 {
2587 bfd_put_8 (output_bfd, 0x8d,
2588 contents + irel->r_offset - 2);
2589 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2590 if (local_got_refcounts != NULL
2591 && local_got_refcounts[r_symndx] > 0)
2592 local_got_refcounts[r_symndx] -= 1;
2593 changed_contents = TRUE;
2594 changed_relocs = TRUE;
2595 }
2596 continue;
2597 }
2598
2599 indx = r_symndx - symtab_hdr->sh_info;
2600 h = elf_sym_hashes (abfd)[indx];
2601 BFD_ASSERT (h != NULL);
2602
2603 while (h->root.type == bfd_link_hash_indirect
2604 || h->root.type == bfd_link_hash_warning)
2605 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2606
3f65f599
L		 2607 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
2608 optimizing _DYNAMIC since ld.so may use its link-time address. */
daa67607
L		 2609 if (h->def_regular
2610 && h->type != STT_GNU_IFUNC
9637f6ef 2611 && h != htab->elf.hdynamic
daa67607
L		 2612 && SYMBOL_REFERENCES_LOCAL (link_info, h)
2613 && bfd_get_8 (input_bfd,
2614 contents + irel->r_offset - 2) == 0x8b)
2615 {
2616 bfd_put_8 (output_bfd, 0x8d,
2617 contents + irel->r_offset - 2);
2618 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2619 if (h->got.refcount > 0)
2620 h->got.refcount -= 1;
2621 changed_contents = TRUE;
2622 changed_relocs = TRUE;
2623 }
2624 }
2625
2626 if (contents != NULL
2627 && elf_section_data (sec)->this_hdr.contents != contents)
2628 {
2629 if (!changed_contents && !link_info->keep_memory)
2630 free (contents);
2631 else
2632 {
2633 /* Cache the section contents for elf_link_input_bfd. */
2634 elf_section_data (sec)->this_hdr.contents = contents;
2635 }
2636 }
2637
2638 if (elf_section_data (sec)->relocs != internal_relocs)
2639 {
2640 if (!changed_relocs)
2641 free (internal_relocs);
2642 else
2643 elf_section_data (sec)->relocs = internal_relocs;
2644 }
2645
2646 return TRUE;
2647
2648 error_return:
2649 if (contents != NULL
2650 && elf_section_data (sec)->this_hdr.contents != contents)
2651 free (contents);
2652 if (internal_relocs != NULL
2653 && elf_section_data (sec)->relocs != internal_relocs)
2654 free (internal_relocs);
2655 return FALSE;
2656}
2657
252b5132
RH		 2658/* Set the sizes of the dynamic sections. */
2659
b34976b6 2660static bfd_boolean
23209a78 2661elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2662{
6725bdbf 2663 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2664 bfd *dynobj;
2665 asection *s;
b34976b6 2666 bfd_boolean relocs;
0c715baa 2667 bfd *ibfd;
252b5132 2668
6725bdbf 2669 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2670 if (htab == NULL)
2671 return FALSE;
ebe50bae 2672 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2673 if (dynobj == NULL)
2674 abort ();
252b5132 2675
ebe50bae 2676 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2677 {
2678 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2679 if (info->executable)
252b5132 2680 {
3d4d4302 2681 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 2682 if (s == NULL)
2683 abort ();
eea6121a 2684 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2685 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2686 }
161d71a6 2687 }
6725bdbf 2688
0c715baa
AM		 2689 /* Set up .got offsets for local syms, and space for local dynamic
2690 relocs. */
2691 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 2692 {
2693 bfd_signed_vma *local_got;
2694 bfd_signed_vma *end_local_got;
13ae64f3 2695 char *local_tls_type;
67a4f2b7 2696 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2697 bfd_size_type locsymcount;
2698 Elf_Internal_Shdr *symtab_hdr;
2699 asection *srel;
6725bdbf 2700
0ffa91dd 2701 if (! is_i386_elf (ibfd))
161d71a6 2702 continue;
6725bdbf 2703
0c715baa
AM		 2704 for (s = ibfd->sections; s != NULL; s = s->next)
2705 {
e03a8ed8 2706 struct elf_dyn_relocs *p;
0c715baa 2707
daa67607
L		 2708 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2709 return FALSE;
2710
e03a8ed8 2711 for (p = ((struct elf_dyn_relocs *)
e81d3500 2712 elf_section_data (s)->local_dynrel);
ec338859
AM		 2713 p != NULL;
2714 p = p->next)
0c715baa 2715 {
ec338859
AM		 2716 if (!bfd_is_abs_section (p->sec)
2717 && bfd_is_abs_section (p->sec->output_section))
2718 {
2719 /* Input section has been discarded, either because
2720 it is a copy of a linkonce section or due to
2721 linker script /DISCARD/, so we'll be discarding
2722 the relocs too. */
2723 }
23209a78 2724 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2725 && strcmp (p->sec->output_section->name,
2726 ".tls_vars") == 0)
2727 {
2728 /* Relocations in vxworks .tls_vars sections are
2729 handled specially by the loader. */
2730 }
248866a8 2731 else if (p->count != 0)
ec338859
AM		 2732 {
2733 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2734 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2735 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2736 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2737 {
2738 info->flags |= DF_TEXTREL;
2739 if (info->warn_shared_textrel && info->shared)
2740 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
2741 p->sec->owner, p->sec);
b70321a2 2742 }
ec338859 2743 }
0c715baa
AM		 2744 }
2745 }
2746
2747 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2748 if (!local_got)
2749 continue;
6725bdbf 2750
0ffa91dd 2751 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2752 locsymcount = symtab_hdr->sh_info;
2753 end_local_got = local_got + locsymcount;
13ae64f3 2754 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2755 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2756 s = htab->elf.sgot;
2757 srel = htab->elf.srelgot;
67a4f2b7
AO		 2758 for (; local_got < end_local_got;
2759 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2760 {
67a4f2b7 2761 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2762 if (*local_got > 0)
6725bdbf 2763 {
67a4f2b7
AO		 2764 if (GOT_TLS_GDESC_P (*local_tls_type))
2765 {
6de2ae4a 2766 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2767 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2768 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2769 *local_got = (bfd_vma) -2;
2770 }
2771 if (! GOT_TLS_GDESC_P (*local_tls_type)
2772 || GOT_TLS_GD_P (*local_tls_type))
2773 {
2774 *local_got = s->size;
2775 s->size += 4;
2776 if (GOT_TLS_GD_P (*local_tls_type)
2777 || *local_tls_type == GOT_TLS_IE_BOTH)
2778 s->size += 4;
2779 }
13ae64f3 2780 if (info->shared
67a4f2b7 2781 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2782 || (*local_tls_type & GOT_TLS_IE))
2783 {
2784 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2785 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2786 else if (GOT_TLS_GD_P (*local_tls_type)
2787 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2788 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2789 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2790 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2791 }
6725bdbf 2792 }
161d71a6
L		 2793 else
2794 *local_got = (bfd_vma) -1;
6725bdbf 2795 }
252b5132 2796 }
6725bdbf 2797
13ae64f3
JJ		 2798 if (htab->tls_ldm_got.refcount > 0)
2799 {
2800 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2801 relocs. */
6de2ae4a
L		 2802 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2803 htab->elf.sgot->size += 8;
2804 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2805 }
2806 else
2807 htab->tls_ldm_got.offset = -1;
2808
0c715baa
AM		 2809 /* Allocate global sym .plt and .got entries, and space for global
2810 sym dynamic relocs. */
eb4ff4d6 2811 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2812
c25bc9fc
L		 2813 /* Allocate .plt and .got entries, and space for local symbols. */
2814 htab_traverse (htab->loc_hash_table,
2815 elf_i386_allocate_local_dynrelocs,
2816 info);
2817
67a4f2b7
AO		 2818 /* For every jump slot reserved in the sgotplt, reloc_count is
2819 incremented. However, when we reserve space for TLS descriptors,
2820 it's not incremented, so in order to compute the space reserved
2821 for them, it suffices to multiply the reloc count by the jump
e1f98742 2822 slot size.
caa0075c 2823
e1f98742
L		 2824 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2825 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2826 if (htab->elf.srelplt)
e1f98742
L		 2827 {
2828 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2829 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2830 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2831 }
2832 else if (htab->elf.irelplt)
2833 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2834
67a4f2b7 2835
a7b16ceb
L		 2836 if (htab->elf.sgotplt)
2837 {
2838 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2839 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 2840 if ((htab->elf.hgot == NULL
2841 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 2842 && (htab->elf.sgotplt->size
2843 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2844 && (htab->elf.splt == NULL
2845 || htab->elf.splt->size == 0)
2846 && (htab->elf.sgot == NULL
2847 || htab->elf.sgot->size == 0)
2848 && (htab->elf.iplt == NULL
2849 || htab->elf.iplt->size == 0)
2850 && (htab->elf.igotplt == NULL
2851 || htab->elf.igotplt->size == 0))
2852 htab->elf.sgotplt->size = 0;
2853 }
2854
9a2a56cc
AM		 2855
2856 if (htab->plt_eh_frame != NULL
2857 && htab->elf.splt != NULL
2858 && htab->elf.splt->size != 0
2859 && !bfd_is_abs_section (htab->elf.splt->output_section)
2860 && _bfd_elf_eh_frame_present (info))
2861 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
2862
5a15f56f
AM		 2863 /* We now have determined the sizes of the various dynamic sections.
2864 Allocate memory for them. */
b34976b6 2865 relocs = FALSE;
252b5132
RH		 2866 for (s = dynobj->sections; s != NULL; s = s->next)
2867 {
eac338cf
PB		 2868 bfd_boolean strip_section = TRUE;
2869
252b5132
RH		 2870 if ((s->flags & SEC_LINKER_CREATED) == 0)
2871 continue;
2872
6de2ae4a 2873 if (s == htab->elf.splt
9a2a56cc 2874 || s == htab->elf.sgot)
252b5132 2875 {
6725bdbf
AM		 2876 /* Strip this section if we don't need it; see the
2877 comment below. */
eac338cf
PB		 2878 /* We'd like to strip these sections if they aren't needed, but if
2879 we've exported dynamic symbols from them we must leave them.
2880 It's too late to tell BFD to get rid of the symbols. */
2881
7325306f 2882 if (htab->elf.hplt != NULL)
eac338cf 2883 strip_section = FALSE;
252b5132 2884 }
9a2a56cc
AM		 2885 else if (s == htab->elf.sgotplt
2886 || s == htab->elf.iplt
2887 || s == htab->elf.igotplt
2888 || s == htab->plt_eh_frame
2889 || s == htab->sdynbss)
2890 {
2891 /* Strip these too. */
2892 }
0112cd26 2893 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2894 {
6de2ae4a
L		 2895 if (s->size != 0
2896 && s != htab->elf.srelplt
2897 && s != htab->srelplt2)
b34976b6 2898 relocs = TRUE;
252b5132 2899
0ac8d2ca
AM		 2900 /* We use the reloc_count field as a counter if we need
2901 to copy relocs into the output file. */
5ae0bfb6 2902 s->reloc_count = 0;
252b5132 2903 }
6725bdbf 2904 else
252b5132
RH		 2905 {
2906 /* It's not one of our sections, so don't allocate space. */
2907 continue;
2908 }
2909
c456f082 2910 if (s->size == 0)
252b5132 2911 {
0ac8d2ca
AM		 2912 /* If we don't need this section, strip it from the
2913 output file. This is mostly to handle .rel.bss and
2914 .rel.plt. We must create both sections in
2915 create_dynamic_sections, because they must be created
2916 before the linker maps input sections to output
2917 sections. The linker does that before
2918 adjust_dynamic_symbol is called, and it is that
2919 function which decides whether anything needs to go
2920 into these sections. */
c456f082
AM		 2921 if (strip_section)
2922 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2923 continue;
2924 }
2925
c456f082
AM		 2926 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2927 continue;
2928
f69da49f
AM		 2929 /* Allocate memory for the section contents. We use bfd_zalloc
2930 here in case unused entries are not reclaimed before the
2931 section's contents are written out. This should not happen,
2932 but this way if it does, we get a R_386_NONE reloc instead
2933 of garbage. */
a50b1753 2934 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 2935 if (s->contents == NULL)
b34976b6 2936 return FALSE;
252b5132
RH		 2937 }
2938
e41b3a13 2939 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 2940 && htab->plt_eh_frame->contents != NULL)
2941 {
2942 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
2943 sizeof (elf_i386_eh_frame_plt));
2944 bfd_put_32 (dynobj, htab->elf.splt->size,
2945 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
2946 }
e41b3a13 2947
ebe50bae 2948 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2949 {
2950 /* Add some entries to the .dynamic section. We fill in the
2951 values later, in elf_i386_finish_dynamic_sections, but we
2952 must add the entries now so that we get the correct size for
2953 the .dynamic section. The DT_DEBUG entry is filled in by the
2954 dynamic linker and used by the debugger. */
dc810e39 2955#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2956 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2957
36af4a4e 2958 if (info->executable)
252b5132 2959 {
dc810e39 2960 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2961 return FALSE;
252b5132
RH		 2962 }
2963
6de2ae4a 2964 if (htab->elf.splt->size != 0)
252b5132 2965 {
dc810e39
AM		 2966 if (!add_dynamic_entry (DT_PLTGOT, 0)
2967 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2968 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2969 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2970 return FALSE;
252b5132
RH		 2971 }
2972
2973 if (relocs)
2974 {
dc810e39
AM		 2975 if (!add_dynamic_entry (DT_REL, 0)
2976 || !add_dynamic_entry (DT_RELSZ, 0)
2977 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 2978 return FALSE;
252b5132 2979
0c715baa
AM		 2980 /* If any dynamic relocs apply to a read-only section,
2981 then we need a DT_TEXTREL entry. */
248866a8 2982 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 2983 elf_link_hash_traverse (&htab->elf,
2984 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 2985
2986 if ((info->flags & DF_TEXTREL) != 0)
2987 {
2988 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2989 return FALSE;
0c715baa 2990 }
252b5132 2991 }
23209a78 2992 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 2993 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2994 return FALSE;
252b5132 2995 }
dc810e39 2996#undef add_dynamic_entry
252b5132 2997
b34976b6 2998 return TRUE;
252b5132
RH		 2999}
3000
67a4f2b7
AO		 3001static bfd_boolean
3002elf_i386_always_size_sections (bfd *output_bfd,
3003 struct bfd_link_info *info)
3004{
3005 asection *tls_sec = elf_hash_table (info)->tls_sec;
3006
3007 if (tls_sec)
3008 {
3009 struct elf_link_hash_entry *tlsbase;
3010
3011 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3012 "_TLS_MODULE_BASE_",
3013 FALSE, FALSE, FALSE);
3014
3015 if (tlsbase && tlsbase->type == STT_TLS)
3016 {
4dfe6ac6 3017 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3018 struct bfd_link_hash_entry *bh = NULL;
3019 const struct elf_backend_data *bed
3020 = get_elf_backend_data (output_bfd);
3021
4dfe6ac6
NC		 3022 htab = elf_i386_hash_table (info);
3023 if (htab == NULL)
3024 return FALSE;
3025
67a4f2b7
AO		 3026 if (!(_bfd_generic_link_add_one_symbol
3027 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3028 tls_sec, 0, NULL, FALSE,
3029 bed->collect, &bh)))
3030 return FALSE;
9f03412a 3031
4dfe6ac6 3032 htab->tls_module_base = bh;
9f03412a 3033
67a4f2b7
AO		 3034 tlsbase = (struct elf_link_hash_entry *)bh;
3035 tlsbase->def_regular = 1;
3036 tlsbase->other = STV_HIDDEN;
3037 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3038 }
3039 }
3040
3041 return TRUE;
3042}
3043
38701953
AM		 3044/* Set the correct type for an x86 ELF section. We do this by the
3045 section name, which is a hack, but ought to work. */
3046
b34976b6 3047static bfd_boolean
55fd94b0
AM		 3048elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3049 Elf_Internal_Shdr *hdr,
3050 asection *sec)
38701953 3051{
91d6fa6a 3052 const char *name;
38701953
AM		 3053
3054 name = bfd_get_section_name (abfd, sec);
3055
3056 /* This is an ugly, but unfortunately necessary hack that is
3057 needed when producing EFI binaries on x86. It tells
3058 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3059 containing ELF relocation info. We need this hack in order to
3060 be able to generate ELF binaries that can be translated into
3061 EFI applications (which are essentially COFF objects). Those
3062 files contain a COFF ".reloc" section inside an ELFNN object,
3063 which would normally cause BFD to segfault because it would
3064 attempt to interpret this section as containing relocation
3065 entries for section "oc". With this hack enabled, ".reloc"
3066 will be treated as a normal data section, which will avoid the
3067 segfault. However, you won't be able to create an ELFNN binary
3068 with a section named "oc" that needs relocations, but that's
3069 the kind of ugly side-effects you get when detecting section
3070 types based on their names... In practice, this limitation is
3071 unlikely to bite. */
3072 if (strcmp (name, ".reloc") == 0)
3073 hdr->sh_type = SHT_PROGBITS;
3074
b34976b6 3075 return TRUE;
38701953
AM		 3076}
3077
9f03412a
AO		 3078/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3079 executables. Rather than setting it to the beginning of the TLS
3080 section, we have to set it to the end. This function may be called
3081 multiple times, it is idempotent. */
3082
3083static void
eb4ff4d6 3084elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3085{
4dfe6ac6 3086 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3087 struct bfd_link_hash_entry *base;
3088
3089 if (!info->executable)
3090 return;
3091
4dfe6ac6
NC		 3092 htab = elf_i386_hash_table (info);
3093 if (htab == NULL)
3094 return;
9f03412a 3095
4dfe6ac6
NC		 3096 base = htab->tls_module_base;
3097 if (base == NULL)
9f03412a
AO		 3098 return;
3099
4dfe6ac6 3100 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3101}
3102
13ae64f3
JJ		 3103/* Return the base VMA address which should be subtracted from real addresses
3104 when resolving @dtpoff relocation.
3105 This is PT_TLS segment p_vaddr. */
3106
3107static bfd_vma
eb4ff4d6 3108elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3109{
e1918d23
AM		 3110 /* If tls_sec is NULL, we should have signalled an error already. */
3111 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3112 return 0;
e1918d23 3113 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3114}
3115
3116/* Return the relocation value for @tpoff relocation
3117 if STT_TLS virtual address is ADDRESS. */
3118
3119static bfd_vma
eb4ff4d6 3120elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3121{
e1918d23 3122 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3123 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3124 bfd_vma static_tls_size;
13ae64f3 3125
e1918d23
AM		 3126 /* If tls_sec is NULL, we should have signalled an error already. */
3127 if (htab->tls_sec == NULL)
6a30718d 3128 return 0;
7dc98aea
RO		 3129
3130 /* Consider special static TLS alignment requirements. */
3131 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3132 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3133}
3134
252b5132
RH		 3135/* Relocate an i386 ELF section. */
3136
b34976b6 3137static bfd_boolean
55fd94b0
AM		 3138elf_i386_relocate_section (bfd *output_bfd,
3139 struct bfd_link_info *info,
3140 bfd *input_bfd,
3141 asection *input_section,
3142 bfd_byte *contents,
3143 Elf_Internal_Rela *relocs,
3144 Elf_Internal_Sym *local_syms,
3145 asection **local_sections)
252b5132 3146{
6725bdbf 3147 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3148 Elf_Internal_Shdr *symtab_hdr;
3149 struct elf_link_hash_entry **sym_hashes;
3150 bfd_vma *local_got_offsets;
67a4f2b7 3151 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3152 Elf_Internal_Rela *rel;
3153 Elf_Internal_Rela *relend;
3348747a 3154 bfd_boolean is_vxworks_tls;
25e762b9 3155 unsigned plt_entry_size;
252b5132 3156
0ffa91dd 3157 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3158
6725bdbf 3159 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3160 if (htab == NULL)
3161 return FALSE;
0ffa91dd 3162 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3163 sym_hashes = elf_sym_hashes (input_bfd);
3164 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3165 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3166 /* We have to handle relocations in vxworks .tls_vars sections
3167 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3168 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3169 && info->shared
3348747a
NS		 3170 && !strcmp (input_section->output_section->name,
3171 ".tls_vars"));
252b5132 3172
eb4ff4d6 3173 elf_i386_set_tls_module_base (info);
9f03412a 3174
25e762b9
RM		 3175 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3176
252b5132
RH		 3177 rel = relocs;
3178 relend = relocs + input_section->reloc_count;
3179 for (; rel < relend; rel++)
3180 {
13ae64f3 3181 unsigned int r_type;
252b5132
RH		 3182 reloc_howto_type *howto;
3183 unsigned long r_symndx;
3184 struct elf_link_hash_entry *h;
3185 Elf_Internal_Sym *sym;
3186 asection *sec;
67a4f2b7 3187 bfd_vma off, offplt;
252b5132 3188 bfd_vma relocation;
b34976b6 3189 bfd_boolean unresolved_reloc;
252b5132 3190 bfd_reloc_status_type r;
1b452ec6 3191 unsigned int indx;
13ae64f3 3192 int tls_type;
1788fc08 3193 bfd_vma st_size;
252b5132
RH		 3194
3195 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3196 if (r_type == R_386_GNU_VTINHERIT
3197 || r_type == R_386_GNU_VTENTRY)
252b5132 3198 continue;
dc47f327 3199
55fd94b0 3200 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3201 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3202 >= R_386_ext - R_386_standard)
3203 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3204 >= R_386_irelative - R_386_ext))
252b5132 3205 {
6ba842b6 3206 (*_bfd_error_handler)
d003868e
AM		 3207 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3208 input_bfd, input_section, r_type);
252b5132 3209 bfd_set_error (bfd_error_bad_value);
b34976b6 3210 return FALSE;
252b5132 3211 }
1b452ec6 3212 howto = elf_howto_table + indx;
252b5132
RH		 3213
3214 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3215 h = NULL;
3216 sym = NULL;
3217 sec = NULL;
b34976b6 3218 unresolved_reloc = FALSE;
252b5132
RH		 3219 if (r_symndx < symtab_hdr->sh_info)
3220 {
3221 sym = local_syms + r_symndx;
3222 sec = local_sections[r_symndx];
3223 relocation = (sec->output_section->vma
3224 + sec->output_offset
3225 + sym->st_value);
1788fc08 3226 st_size = sym->st_size;
ab96bf03
AM		 3227
3228 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3229 && ((sec->flags & SEC_MERGE) != 0
3230 || (info->relocatable
3231 && sec->output_offset != 0)))
f8df10f4 3232 {
f8df10f4 3233 bfd_vma addend;
4a335f3d 3234 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3235
4a335f3d 3236 switch (howto->size)
f8df10f4 3237 {
4a335f3d
AM		 3238 case 0:
3239 addend = bfd_get_8 (input_bfd, where);
3240 if (howto->pc_relative)
3241 {
3242 addend = (addend ^ 0x80) - 0x80;
3243 addend += 1;
3244 }
3245 break;
3246 case 1:
3247 addend = bfd_get_16 (input_bfd, where);
3248 if (howto->pc_relative)
3249 {
3250 addend = (addend ^ 0x8000) - 0x8000;
3251 addend += 2;
3252 }
3253 break;
3254 case 2:
3255 addend = bfd_get_32 (input_bfd, where);
3256 if (howto->pc_relative)
3257 {
3258 addend = (addend ^ 0x80000000) - 0x80000000;
3259 addend += 4;
3260 }
3261 break;
3262 default:
3263 abort ();
f8df10f4
JJ		 3264 }
3265
ab96bf03
AM		 3266 if (info->relocatable)
3267 addend += sec->output_offset;
3268 else
3269 {
3270 asection *msec = sec;
3271 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3272 addend);
3273 addend -= relocation;
3274 addend += msec->output_section->vma + msec->output_offset;
3275 }
4a335f3d
AM		 3276
3277 switch (howto->size)
3278 {
3279 case 0:
16a10388 3280 /* FIXME: overflow checks. */
4a335f3d
AM		 3281 if (howto->pc_relative)
3282 addend -= 1;
3283 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3284 break;
3285 case 1:
3286 if (howto->pc_relative)
3287 addend -= 2;
3288 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3289 break;
3290 case 2:
3291 if (howto->pc_relative)
3292 addend -= 4;
3293 bfd_put_32 (input_bfd, addend, where);
3294 break;
3295 }
f8df10f4 3296 }
1f85278f
L		 3297 else if (!info->relocatable
3298 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3299 {
3300 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3301 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3302 FALSE);
c25bc9fc
L		 3303 if (h == NULL)
3304 abort ();
3305
23209a78 3306 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3307 h->root.u.def.value = sym->st_value;
3308 h->root.u.def.section = sec;
3309 }
252b5132
RH		 3310 }
3311 else
3312 {
3d540e93 3313 bfd_boolean warned ATTRIBUTE_UNUSED;
ffb2e45b 3314
b2a8e766
AM		 3315 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3316 r_symndx, symtab_hdr, sym_hashes,
3317 h, sec, relocation,
3318 unresolved_reloc, warned);
1788fc08 3319 st_size = h->size;
252b5132
RH		 3320 }
3321
dbaa2011 3322 if (sec != NULL && discarded_section (sec))
0672748a 3323 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3324 rel, 1, relend, howto, 0, contents);
9635fe29 3325
ab96bf03
AM		 3326 if (info->relocatable)
3327 continue;
3328
cbe950e9
L		 3329 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3330 it here if it is defined in a non-shared object. */
3331 if (h != NULL
3332 && h->type == STT_GNU_IFUNC
3333 && h->def_regular)
3334 {
3335 asection *plt, *gotplt, *base_got;
3336 bfd_vma plt_index;
4c544807 3337 const char *name;
cbe950e9
L		 3338
3339 if ((input_section->flags & SEC_ALLOC) == 0
3340 || h->plt.offset == (bfd_vma) -1)
3341 abort ();
3342
3343 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3344 if (htab->elf.splt != NULL)
cbe950e9 3345 {
6de2ae4a
L		 3346 plt = htab->elf.splt;
3347 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3348 }
3349 else
3350 {
6de2ae4a
L		 3351 plt = htab->elf.iplt;
3352 gotplt = htab->elf.igotplt;
cbe950e9
L		 3353 }
3354
3355 relocation = (plt->output_section->vma
3356 + plt->output_offset + h->plt.offset);
3357
3358 switch (r_type)
3359 {
3360 default:
4c544807
L		 3361 if (h->root.root.string)
3362 name = h->root.root.string;
3363 else
3364 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3365 NULL);
cbe950e9
L		 3366 (*_bfd_error_handler)
3367 (_("%B: relocation %s against STT_GNU_IFUNC "
3368 "symbol `%s' isn't handled by %s"), input_bfd,
3369 elf_howto_table[r_type].name,
4c544807 3370 name, __FUNCTION__);
cbe950e9
L		 3371 bfd_set_error (bfd_error_bad_value);
3372 return FALSE;
3373
3374 case R_386_32:
710ab287 3375 /* Generate dynamic relcoation only when there is a
c293fa49 3376 non-GOT reference in a shared object. */
710ab287
L		 3377 if (info->shared && h->non_got_ref)
3378 {
3379 Elf_Internal_Rela outrel;
710ab287
L		 3380 asection *sreloc;
3381 bfd_vma offset;
3382
c25bc9fc
L		 3383 /* Need a dynamic relocation to get the real function
3384 adddress. */
710ab287
L		 3385 offset = _bfd_elf_section_offset (output_bfd,
3386 info,
3387 input_section,
3388 rel->r_offset);
3389 if (offset == (bfd_vma) -1
3390 || offset == (bfd_vma) -2)
3391 abort ();
3392
3393 outrel.r_offset = (input_section->output_section->vma
3394 + input_section->output_offset
3395 + offset);
3396
3397 if (h->dynindx == -1
44c4ea11
L		 3398 || h->forced_local
3399 || info->executable)
710ab287
L		 3400 {
3401 /* This symbol is resolved locally. */
56b8aada
L		 3402 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3403 bfd_put_32 (output_bfd,
3404 (h->root.u.def.value
3405 + h->root.u.def.section->output_section->vma
3406 + h->root.u.def.section->output_offset),
3407 contents + offset);
710ab287
L		 3408 }
3409 else
56b8aada 3410 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3411
6de2ae4a 3412 sreloc = htab->elf.irelifunc;
59d6ffb2 3413 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3414
3415 /* If this reloc is against an external symbol, we
3416 do not want to fiddle with the addend. Otherwise,
3417 we need to include the symbol value so that it
3418 becomes an addend for the dynamic reloc. For an
3419 internal symbol, we have updated addend. */
56b8aada 3420 continue;
710ab287 3421 }
d59a60e9 3422 /* FALLTHROUGH */
cbe950e9
L		 3423 case R_386_PC32:
3424 case R_386_PLT32:
3425 goto do_relocation;
3426
3427 case R_386_GOT32:
6de2ae4a 3428 base_got = htab->elf.sgot;
cbe950e9
L		 3429 off = h->got.offset;
3430
7afd84dc 3431 if (base_got == NULL)
cbe950e9
L		 3432 abort ();
3433
7afd84dc 3434 if (off == (bfd_vma) -1)
cbe950e9 3435 {
7afd84dc
L		 3436 /* We can't use h->got.offset here to save state, or
3437 even just remember the offset, as finish_dynamic_symbol
3438 would use that as offset into .got. */
6bbec505 3439
6de2ae4a 3440 if (htab->elf.splt != NULL)
7afd84dc 3441 {
25e762b9 3442 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3443 off = (plt_index + 3) * 4;
6de2ae4a 3444 base_got = htab->elf.sgotplt;
7afd84dc 3445 }
cbe950e9
L		 3446 else
3447 {
25e762b9 3448 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3449 off = plt_index * 4;
6de2ae4a 3450 base_got = htab->elf.igotplt;
7afd84dc
L		 3451 }
3452
3453 if (h->dynindx == -1
3454 || h->forced_local
3455 || info->symbolic)
3456 {
3457 /* This references the local defitionion. We must
3458 initialize this entry in the global offset table.
3459 Since the offset must always be a multiple of 8,
3460 we use the least significant bit to record
3461 whether we have initialized it already.
3462
3463 When doing a dynamic link, we create a .rela.got
3464 relocation entry to initialize the value. This
3465 is done in the finish_dynamic_symbol routine. */
3466 if ((off & 1) != 0)
3467 off &= ~1;
3468 else
3469 {
3470 bfd_put_32 (output_bfd, relocation,
3471 base_got->contents + off);
3472 h->got.offset |= 1;
3473 }
cbe950e9 3474 }
cbe950e9 3475
7afd84dc 3476 relocation = off;
cbe950e9 3477
7afd84dc 3478 /* Adjust for static executables. */
6de2ae4a 3479 if (htab->elf.splt == NULL)
7afd84dc
L		 3480 relocation += gotplt->output_offset;
3481 }
3482 else
0018b0a3
L		 3483 {
3484 relocation = (base_got->output_section->vma
3485 + base_got->output_offset + off
3486 - gotplt->output_section->vma
3487 - gotplt->output_offset);
3488 /* Adjust for static executables. */
6de2ae4a 3489 if (htab->elf.splt == NULL)
0018b0a3
L		 3490 relocation += gotplt->output_offset;
3491 }
3492
cbe950e9
L		 3493 goto do_relocation;
3494
3495 case R_386_GOTOFF:
3496 relocation -= (gotplt->output_section->vma
3497 + gotplt->output_offset);
3498 goto do_relocation;
3499 }
3500 }
3501
252b5132
RH		 3502 switch (r_type)
3503 {
3504 case R_386_GOT32:
3505 /* Relocation is to the entry for this symbol in the global
3506 offset table. */
6de2ae4a 3507 if (htab->elf.sgot == NULL)
ffb2e45b 3508 abort ();
252b5132
RH		 3509
3510 if (h != NULL)
3511 {
b34976b6 3512 bfd_boolean dyn;
252b5132
RH		 3513
3514 off = h->got.offset;
ebe50bae 3515 dyn = htab->elf.dynamic_sections_created;
26e41594 3516 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3517 || (info->shared
586119b3 3518 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3519 || (ELF_ST_VISIBILITY (h->other)
3520 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3521 {
3522 /* This is actually a static link, or it is a
3523 -Bsymbolic link and the symbol is defined
3524 locally, or the symbol was forced to be local
3525 because of a version file. We must initialize
3526 this entry in the global offset table. Since the
3527 offset must always be a multiple of 4, we use the
3528 least significant bit to record whether we have
3529 initialized it already.
3530
3531 When doing a dynamic link, we create a .rel.got
3532 relocation entry to initialize the value. This
3533 is done in the finish_dynamic_symbol routine. */
3534 if ((off & 1) != 0)
3535 off &= ~1;
3536 else
3537 {
3538 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3539 htab->elf.sgot->contents + off);
252b5132
RH		 3540 h->got.offset |= 1;
3541 }
3542 }
8c694914 3543 else
b34976b6 3544 unresolved_reloc = FALSE;
252b5132
RH		 3545 }
3546 else
3547 {
ffb2e45b
AM		 3548 if (local_got_offsets == NULL)
3549 abort ();
252b5132
RH		 3550
3551 off = local_got_offsets[r_symndx];
3552
3553 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3554 the least significant bit to record whether we have
3555 already generated the necessary reloc. */
252b5132
RH		 3556 if ((off & 1) != 0)
3557 off &= ~1;
3558 else
3559 {
6725bdbf 3560 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3561 htab->elf.sgot->contents + off);
252b5132
RH		 3562
3563 if (info->shared)
3564 {
947216bf
AM		 3565 asection *s;
3566 Elf_Internal_Rela outrel;
252b5132 3567
6de2ae4a 3568 s = htab->elf.srelgot;
947216bf 3569 if (s == NULL)
ffb2e45b 3570 abort ();
252b5132 3571
6de2ae4a
L		 3572 outrel.r_offset = (htab->elf.sgot->output_section->vma
3573 + htab->elf.sgot->output_offset
252b5132
RH		 3574 + off);
3575 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 3576 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 3577 }
3578
3579 local_got_offsets[r_symndx] |= 1;
3580 }
252b5132
RH		 3581 }
3582
ffb2e45b
AM		 3583 if (off >= (bfd_vma) -2)
3584 abort ();
3585
6de2ae4a
L		 3586 relocation = htab->elf.sgot->output_section->vma
3587 + htab->elf.sgot->output_offset + off
3588 - htab->elf.sgotplt->output_section->vma
3589 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3590 break;
3591
3592 case R_386_GOTOFF:
3593 /* Relocation is relative to the start of the global offset
3594 table. */
3595
90f487df
L		 3596 /* Check to make sure it isn't a protected function symbol
3597 for shared library since it may not be local when used
41bed6dd
L		 3598 as function address. We also need to make sure that a
3599 symbol is defined locally. */
3600 if (info->shared && h)
90f487df 3601 {
41bed6dd
L		 3602 if (!h->def_regular)
3603 {
3604 const char *v;
3605
3606 switch (ELF_ST_VISIBILITY (h->other))
3607 {
3608 case STV_HIDDEN:
3609 v = _("hidden symbol");
3610 break;
3611 case STV_INTERNAL:
3612 v = _("internal symbol");
3613 break;
3614 case STV_PROTECTED:
3615 v = _("protected symbol");
3616 break;
3617 default:
3618 v = _("symbol");
3619 break;
3620 }
3621
3622 (*_bfd_error_handler)
3623 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3624 input_bfd, v, h->root.root.string);
3625 bfd_set_error (bfd_error_bad_value);
3626 return FALSE;
3627 }
3628 else if (!info->executable
bdb892b9 3629 && !SYMBOLIC_BIND (info, h)
41bed6dd
L		 3630 && h->type == STT_FUNC
3631 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3632 {
3633 (*_bfd_error_handler)
3634 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3635 input_bfd, h->root.root.string);
3636 bfd_set_error (bfd_error_bad_value);
3637 return FALSE;
3638 }
90f487df
L		 3639 }
3640
8c37241b
JJ		 3641 /* Note that sgot is not involved in this
3642 calculation. We always want the start of .got.plt. If we
3643 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3644 permitted by the ABI, we might have to change this
3645 calculation. */
6de2ae4a
L		 3646 relocation -= htab->elf.sgotplt->output_section->vma
3647 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3648 break;
3649
3650 case R_386_GOTPC:
3651 /* Use global offset table as symbol value. */
6de2ae4a
L		 3652 relocation = htab->elf.sgotplt->output_section->vma
3653 + htab->elf.sgotplt->output_offset;
b34976b6 3654 unresolved_reloc = FALSE;
252b5132
RH		 3655 break;
3656
3657 case R_386_PLT32:
3658 /* Relocation is to the entry for this symbol in the
3659 procedure linkage table. */
3660
dd5724d5 3661 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3662 without using the procedure linkage table. */
252b5132
RH		 3663 if (h == NULL)
3664 break;
3665
dd5724d5 3666 if (h->plt.offset == (bfd_vma) -1
6de2ae4a 3667 || htab->elf.splt == NULL)
252b5132
RH		 3668 {
3669 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3670 happens when statically linking PIC code, or when
3671 using -Bsymbolic. */
252b5132
RH		 3672 break;
3673 }
3674
6de2ae4a
L		 3675 relocation = (htab->elf.splt->output_section->vma
3676 + htab->elf.splt->output_offset
252b5132 3677 + h->plt.offset);
b34976b6 3678 unresolved_reloc = FALSE;
252b5132
RH		 3679 break;
3680
1788fc08 3681 case R_386_SIZE32:
1788fc08
L		 3682 /* Set to symbol size. */
3683 relocation = st_size;
3684 /* Fall through. */
3685
252b5132
RH		 3686 case R_386_32:
3687 case R_386_PC32:
3348747a
NS		 3688 if ((input_section->flags & SEC_ALLOC) == 0
3689 || is_vxworks_tls)
ec338859
AM		 3690 break;
3691
12d0ee4a 3692 if ((info->shared
ef5aade5
L		 3693 && (h == NULL
3694 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3695 || h->root.type != bfd_link_hash_undefweak)
1788fc08 3696 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3697 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3698 || (ELIMINATE_COPY_RELOCS
3699 && !info->shared
12d0ee4a
AM		 3700 && h != NULL
3701 && h->dynindx != -1
f5385ebf
AM		 3702 && !h->non_got_ref
3703 && ((h->def_dynamic
3704 && !h->def_regular)
28d0b90e 3705 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3706 || h->root.type == bfd_link_hash_undefined)))
252b5132 3707 {
947216bf 3708 Elf_Internal_Rela outrel;
b34976b6 3709 bfd_boolean skip, relocate;
0c715baa 3710 asection *sreloc;
252b5132
RH		 3711
3712 /* When generating a shared object, these relocations
3713 are copied into the output file to be resolved at run
3714 time. */
3715
b34976b6
AM		 3716 skip = FALSE;
3717 relocate = FALSE;
252b5132 3718
c629eae0
JJ		 3719 outrel.r_offset =
3720 _bfd_elf_section_offset (output_bfd, info, input_section,
3721 rel->r_offset);
3722 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3723 skip = TRUE;
0bb2d96a 3724 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3725 skip = TRUE, relocate = TRUE;
252b5132
RH		 3726 outrel.r_offset += (input_section->output_section->vma
3727 + input_section->output_offset);
3728
3729 if (skip)
0bb2d96a 3730 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3731 else if (h != NULL
3732 && h->dynindx != -1
3733 && (r_type == R_386_PC32
3734 || !info->shared
55255dae 3735 || !SYMBOLIC_BIND (info, h)
f5385ebf 3736 || !h->def_regular))
0bb2d96a 3737 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3738 else
3739 {
5a15f56f 3740 /* This symbol is local, or marked to become local. */
b34976b6 3741 relocate = TRUE;
5a15f56f 3742 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3743 }
3744
cbe950e9 3745 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3746
62d78908
L		 3747 if (sreloc == NULL || sreloc->contents == NULL)
3748 {
3749 r = bfd_reloc_notsupported;
3750 goto check_relocation_error;
3751 }
0c715baa 3752
59d6ffb2 3753 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 3754
3755 /* If this reloc is against an external symbol, we do
3756 not want to fiddle with the addend. Otherwise, we
3757 need to include the symbol value so that it becomes
3758 an addend for the dynamic reloc. */
0f88be7a 3759 if (! relocate)
252b5132
RH		 3760 continue;
3761 }
252b5132
RH		 3762 break;
3763
37e55690 3764 case R_386_TLS_IE:
1d85728f 3765 if (!info->executable)
37e55690 3766 {
947216bf 3767 Elf_Internal_Rela outrel;
37e55690 3768 asection *sreloc;
37e55690
JJ		 3769
3770 outrel.r_offset = rel->r_offset
3771 + input_section->output_section->vma
3772 + input_section->output_offset;
3773 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3774 sreloc = elf_section_data (input_section)->sreloc;
3775 if (sreloc == NULL)
3776 abort ();
59d6ffb2 3777 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3778 }
3779 /* Fall through */
3780
13ae64f3 3781 case R_386_TLS_GD:
67a4f2b7
AO		 3782 case R_386_TLS_GOTDESC:
3783 case R_386_TLS_DESC_CALL:
13ae64f3 3784 case R_386_TLS_IE_32:
37e55690 3785 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3786 tls_type = GOT_UNKNOWN;
3787 if (h == NULL && local_got_offsets)
3788 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3789 else if (h != NULL)
142411ca 3790 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3791 if (tls_type == GOT_TLS_IE)
3792 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3793
3794 if (! elf_i386_tls_transition (info, input_bfd,
3795 input_section, contents,
3796 symtab_hdr, sym_hashes,
3797 &r_type, tls_type, rel,
4c544807 3798 relend, h, r_symndx))
142411ca 3799 return FALSE;
13ae64f3
JJ		 3800
3801 if (r_type == R_386_TLS_LE_32)
3802 {
82e51918 3803 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3804 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3805 {
142411ca 3806 unsigned int type;
13ae64f3
JJ		 3807 bfd_vma roff;
3808
3809 /* GD->LE transition. */
13ae64f3 3810 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3811 if (type == 0x04)
3812 {
3813 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3814 Change it into:
3815 movl %gs:0, %eax; subl $foo@tpoff, %eax
3816 (6 byte form of subl). */
13ae64f3
JJ		 3817 memcpy (contents + rel->r_offset - 3,
3818 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3819 roff = rel->r_offset + 5;
13ae64f3
JJ		 3820 }
3821 else
3822 {
142411ca
L		 3823 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3824 Change it into:
3825 movl %gs:0, %eax; subl $foo@tpoff, %eax
3826 (6 byte form of subl). */
3827 memcpy (contents + rel->r_offset - 2,
3828 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3829 roff = rel->r_offset + 6;
13ae64f3 3830 }
eb4ff4d6 3831 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3832 contents + roff);
a3fadc9a 3833 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 3834 rel++;
3835 continue;
3836 }
67a4f2b7
AO		 3837 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3838 {
3839 /* GDesc -> LE transition.
3840 It's originally something like:
3841 leal x@tlsdesc(%ebx), %eax
3842
3843 leal x@ntpoff, %eax
3844
3845 Registers other than %eax may be set up here. */
3846
142411ca 3847 unsigned int val;
67a4f2b7
AO		 3848 bfd_vma roff;
3849
67a4f2b7 3850 roff = rel->r_offset;
67a4f2b7 3851 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3852
3853 /* Now modify the instruction as appropriate. */
3854 /* aoliva FIXME: remove the above and xor the byte
3855 below with 0x86. */
3856 bfd_put_8 (output_bfd, val ^ 0x86,
3857 contents + roff - 1);
eb4ff4d6 3858 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 3859 contents + roff);
3860 continue;
3861 }
3862 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3863 {
3864 /* GDesc -> LE transition.
3865 It's originally:
3866 call *(%eax)
3867 Turn it into:
142411ca 3868 xchg %ax,%ax */
67a4f2b7 3869
67a4f2b7 3870 bfd_vma roff;
6bbec505 3871
67a4f2b7 3872 roff = rel->r_offset;
10efb593 3873 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3874 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3875 continue;
3876 }
37e55690 3877 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 3878 {
142411ca 3879 unsigned int val;
13ae64f3
JJ		 3880
3881 /* IE->LE transition:
37e55690
JJ		 3882 Originally it can be one of:
3883 movl foo, %eax
3884 movl foo, %reg
3885 addl foo, %reg
3886 We change it into:
3887 movl $foo, %eax
3888 movl $foo, %reg
3889 addl $foo, %reg. */
37e55690 3890 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 3891 if (val == 0xa1)
3892 {
3893 /* movl foo, %eax. */
55fd94b0
AM		 3894 bfd_put_8 (output_bfd, 0xb8,
3895 contents + rel->r_offset - 1);
37e55690 3896 }
299bf759 3897 else
37e55690 3898 {
142411ca
L		 3899 unsigned int type;
3900
55fd94b0
AM		 3901 type = bfd_get_8 (input_bfd,
3902 contents + rel->r_offset - 2);
299bf759 3903 switch (type)
26e41594 3904 {
299bf759
L		 3905 case 0x8b:
3906 /* movl */
299bf759
L		 3907 bfd_put_8 (output_bfd, 0xc7,
3908 contents + rel->r_offset - 2);
3909 bfd_put_8 (output_bfd,
3910 0xc0 | ((val >> 3) & 7),
3911 contents + rel->r_offset - 1);
3912 break;
3913 case 0x03:
3914 /* addl */
299bf759
L		 3915 bfd_put_8 (output_bfd, 0x81,
3916 contents + rel->r_offset - 2);
3917 bfd_put_8 (output_bfd,
3918 0xc0 | ((val >> 3) & 7),
3919 contents + rel->r_offset - 1);
3920 break;
3921 default:
3922 BFD_FAIL ();
3923 break;
26e41594 3924 }
37e55690 3925 }
eb4ff4d6 3926 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3927 contents + rel->r_offset);
3928 continue;
3929 }
3930 else
3931 {
3932 unsigned int val, type;
3933
3934 /* {IE_32,GOTIE}->LE transition:
3935 Originally it can be one of:
13ae64f3 3936 subl foo(%reg1), %reg2
13ae64f3 3937 movl foo(%reg1), %reg2
37e55690 3938 addl foo(%reg1), %reg2
13ae64f3
JJ		 3939 We change it into:
3940 subl $foo, %reg2
37e55690
JJ		 3941 movl $foo, %reg2 (6 byte form)
3942 addl $foo, %reg2. */
13ae64f3
JJ		 3943 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3944 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 3945 if (type == 0x8b)
3946 {
3947 /* movl */
13ae64f3
JJ		 3948 bfd_put_8 (output_bfd, 0xc7,
3949 contents + rel->r_offset - 2);
3950 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3951 contents + rel->r_offset - 1);
3952 }
3953 else if (type == 0x2b)
3954 {
3955 /* subl */
13ae64f3
JJ		 3956 bfd_put_8 (output_bfd, 0x81,
3957 contents + rel->r_offset - 2);
3958 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3959 contents + rel->r_offset - 1);
3960 }
37e55690
JJ		 3961 else if (type == 0x03)
3962 {
3963 /* addl */
3964 bfd_put_8 (output_bfd, 0x81,
3965 contents + rel->r_offset - 2);
3966 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3967 contents + rel->r_offset - 1);
3968 }
13ae64f3
JJ		 3969 else
3970 BFD_FAIL ();
37e55690 3971 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 3972 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3973 contents + rel->r_offset);
3974 else
eb4ff4d6 3975 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 3976 contents + rel->r_offset);
13ae64f3
JJ		 3977 continue;
3978 }
3979 }
3980
6de2ae4a 3981 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 3982 abort ();
3983
3984 if (h != NULL)
67a4f2b7
AO		 3985 {
3986 off = h->got.offset;
3987 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
3988 }
13ae64f3
JJ		 3989 else
3990 {
3991 if (local_got_offsets == NULL)
3992 abort ();
3993
3994 off = local_got_offsets[r_symndx];
67a4f2b7 3995 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 3996 }
3997
3998 if ((off & 1) != 0)
3999 off &= ~1;
26e41594 4000 else
13ae64f3 4001 {
947216bf 4002 Elf_Internal_Rela outrel;
91d6fa6a 4003 int dr_type;
67a4f2b7 4004 asection *sreloc;
13ae64f3 4005
6de2ae4a 4006 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4007 abort ();
4008
67a4f2b7
AO		 4009 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4010
4011 if (GOT_TLS_GDESC_P (tls_type))
4012 {
59d6ffb2 4013 bfd_byte *loc;
67a4f2b7
AO		 4014 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4015 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4016 <= htab->elf.sgotplt->size);
4017 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4018 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4019 + offplt
4020 + htab->sgotplt_jump_table_size);
6de2ae4a 4021 sreloc = htab->elf.srelplt;
67a4f2b7 4022 loc = sreloc->contents;
5ae0bfb6
RS		 4023 loc += (htab->next_tls_desc_index++
4024 * sizeof (Elf32_External_Rel));
67a4f2b7 4025 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4026 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4027 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4028 if (indx == 0)
4029 {
4030 BFD_ASSERT (! unresolved_reloc);
4031 bfd_put_32 (output_bfd,
eb4ff4d6 4032 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4033 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4034 + htab->sgotplt_jump_table_size + 4);
4035 }
4036 else
4037 {
4038 bfd_put_32 (output_bfd, 0,
6de2ae4a 4039 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4040 + htab->sgotplt_jump_table_size + 4);
4041 }
4042 }
4043
6de2ae4a 4044 sreloc = htab->elf.srelgot;
67a4f2b7 4045
6de2ae4a
L		 4046 outrel.r_offset = (htab->elf.sgot->output_section->vma
4047 + htab->elf.sgot->output_offset + off);
13ae64f3 4048
67a4f2b7 4049 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4050 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4051 else if (GOT_TLS_GDESC_P (tls_type))
4052 goto dr_done;
37e55690
JJ		 4053 else if (tls_type == GOT_TLS_IE_POS)
4054 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4055 else
4056 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4057
37e55690 4058 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4059 bfd_put_32 (output_bfd,
4060 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4061 htab->elf.sgot->contents + off);
37e55690 4062 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4063 bfd_put_32 (output_bfd,
eb4ff4d6 4064 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4065 htab->elf.sgot->contents + off);
67a4f2b7 4066 else if (dr_type != R_386_TLS_DESC)
c366c25e 4067 bfd_put_32 (output_bfd, 0,
6de2ae4a 4068 htab->elf.sgot->contents + off);
13ae64f3 4069 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4070
59d6ffb2 4071 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4072
67a4f2b7 4073 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4074 {
4075 if (indx == 0)
4076 {
82e51918 4077 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4078 bfd_put_32 (output_bfd,
eb4ff4d6 4079 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4080 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4081 }
4082 else
4083 {
4084 bfd_put_32 (output_bfd, 0,
6de2ae4a 4085 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4086 outrel.r_info = ELF32_R_INFO (indx,
4087 R_386_TLS_DTPOFF32);
4088 outrel.r_offset += 4;
59d6ffb2 4089 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4090 }
4091 }
37e55690
JJ		 4092 else if (tls_type == GOT_TLS_IE_BOTH)
4093 {
4094 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4095 (indx == 0
4096 ? relocation - elf_i386_dtpoff_base (info)
4097 : 0),
6de2ae4a 4098 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4099 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4100 outrel.r_offset += 4;
59d6ffb2 4101 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4102 }
13ae64f3 4103
67a4f2b7 4104 dr_done:
13ae64f3
JJ		 4105 if (h != NULL)
4106 h->got.offset |= 1;
4107 else
4108 local_got_offsets[r_symndx] |= 1;
4109 }
4110
67a4f2b7
AO		 4111 if (off >= (bfd_vma) -2
4112 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4113 abort ();
67a4f2b7
AO		 4114 if (r_type == R_386_TLS_GOTDESC
4115 || r_type == R_386_TLS_DESC_CALL)
4116 {
4117 relocation = htab->sgotplt_jump_table_size + offplt;
4118 unresolved_reloc = FALSE;
4119 }
4120 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4121 {
6de2ae4a
L		 4122 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4123 + htab->elf.sgotplt->output_offset;
4124 relocation = htab->elf.sgot->output_section->vma
4125 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4126 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4127 && tls_type == GOT_TLS_IE_BOTH)
4128 relocation += 4;
4129 if (r_type == R_386_TLS_IE)
8c37241b 4130 relocation += g_o_t;
b34976b6 4131 unresolved_reloc = FALSE;
13ae64f3 4132 }
67a4f2b7 4133 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4134 {
4135 unsigned int val, type;
4136 bfd_vma roff;
4137
4138 /* GD->IE transition. */
13ae64f3 4139 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4140 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4141 if (type == 0x04)
4142 {
4143 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4144 Change it into:
4145 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4146 val >>= 3;
142411ca 4147 roff = rel->r_offset - 3;
13ae64f3
JJ		 4148 }
4149 else
4150 {
4151 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4152 Change it into:
4153 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4154 roff = rel->r_offset - 2;
4155 }
4156 memcpy (contents + roff,
4157 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4158 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4159 /* If foo is used only with foo@gotntpoff(%reg) and
4160 foo@indntpoff, but not with foo@gottpoff(%reg), change
4161 subl $foo@gottpoff(%reg), %eax
4162 into:
4163 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4164 if (tls_type == GOT_TLS_IE_POS)
4165 contents[roff + 6] = 0x03;
8c37241b 4166 bfd_put_32 (output_bfd,
6de2ae4a
L		 4167 htab->elf.sgot->output_section->vma
4168 + htab->elf.sgot->output_offset + off
4169 - htab->elf.sgotplt->output_section->vma
4170 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4171 contents + roff + 8);
4172 /* Skip R_386_PLT32. */
4173 rel++;
4174 continue;
4175 }
67a4f2b7
AO		 4176 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4177 {
4178 /* GDesc -> IE transition.
4179 It's originally something like:
4180 leal x@tlsdesc(%ebx), %eax
4181
4182 Change it to:
142411ca 4183 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4184 or:
4185 movl x@gottpoff(%ebx), %eax # before negl %eax
4186
4187 Registers other than %eax may be set up here. */
4188
67a4f2b7
AO		 4189 bfd_vma roff;
4190
4191 /* First, make sure it's a leal adding ebx to a 32-bit
4192 offset into any register, although it's probably
4193 almost always going to be eax. */
4194 roff = rel->r_offset;
67a4f2b7
AO		 4195
4196 /* Now modify the instruction as appropriate. */
4197 /* To turn a leal into a movl in the form we use it, it
4198 suffices to change the first byte from 0x8d to 0x8b.
4199 aoliva FIXME: should we decide to keep the leal, all
4200 we have to do is remove the statement below, and
4201 adjust the relaxation of R_386_TLS_DESC_CALL. */
4202 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4203
4204 if (tls_type == GOT_TLS_IE_BOTH)
4205 off += 4;
4206
4207 bfd_put_32 (output_bfd,
6de2ae4a
L		 4208 htab->elf.sgot->output_section->vma
4209 + htab->elf.sgot->output_offset + off
4210 - htab->elf.sgotplt->output_section->vma
4211 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4212 contents + roff);
4213 continue;
4214 }
4215 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4216 {
4217 /* GDesc -> IE transition.
4218 It's originally:
4219 call *(%eax)
4220
4221 Change it to:
142411ca 4222 xchg %ax,%ax
67a4f2b7
AO		 4223 or
4224 negl %eax
4225 depending on how we transformed the TLS_GOTDESC above.
4226 */
4227
67a4f2b7
AO		 4228 bfd_vma roff;
4229
67a4f2b7 4230 roff = rel->r_offset;
67a4f2b7
AO		 4231
4232 /* Now modify the instruction as appropriate. */
4233 if (tls_type != GOT_TLS_IE_NEG)
4234 {
10efb593
L		 4235 /* xchg %ax,%ax */
4236 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4237 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4238 }
4239 else
4240 {
4241 /* negl %eax */
4242 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4243 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4244 }
4245
4246 continue;
4247 }
4248 else
4249 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4250 break;
4251
4252 case R_386_TLS_LDM:
142411ca
L		 4253 if (! elf_i386_tls_transition (info, input_bfd,
4254 input_section, contents,
4255 symtab_hdr, sym_hashes,
4256 &r_type, GOT_UNKNOWN, rel,
4c544807 4257 relend, h, r_symndx))
142411ca 4258 return FALSE;
13ae64f3 4259
142411ca
L		 4260 if (r_type != R_386_TLS_LDM)
4261 {
13ae64f3 4262 /* LD->LE transition:
13ae64f3
JJ		 4263 leal foo(%reg), %eax; call ___tls_get_addr.
4264 We change it into:
4265 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4266 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4267 memcpy (contents + rel->r_offset - 2,
4268 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4269 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4270 rel++;
4271 continue;
4272 }
4273
6de2ae4a 4274 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4275 abort ();
4276
4277 off = htab->tls_ldm_got.offset;
4278 if (off & 1)
4279 off &= ~1;
4280 else
4281 {
947216bf 4282 Elf_Internal_Rela outrel;
13ae64f3 4283
6de2ae4a 4284 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4285 abort ();
4286
6de2ae4a
L		 4287 outrel.r_offset = (htab->elf.sgot->output_section->vma
4288 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4289
4290 bfd_put_32 (output_bfd, 0,
6de2ae4a 4291 htab->elf.sgot->contents + off);
13ae64f3 4292 bfd_put_32 (output_bfd, 0,
6de2ae4a 4293 htab->elf.sgot->contents + off + 4);
13ae64f3 4294 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4295 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4296 htab->tls_ldm_got.offset |= 1;
4297 }
6de2ae4a
L		 4298 relocation = htab->elf.sgot->output_section->vma
4299 + htab->elf.sgot->output_offset + off
4300 - htab->elf.sgotplt->output_section->vma
4301 - htab->elf.sgotplt->output_offset;
b34976b6 4302 unresolved_reloc = FALSE;
13ae64f3
JJ		 4303 break;
4304
4305 case R_386_TLS_LDO_32:
959b0961 4306 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4307 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4308 else
4309 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4310 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4311 break;
4312
4313 case R_386_TLS_LE_32:
13ae64f3 4314 case R_386_TLS_LE:
1d85728f 4315 if (!info->executable)
37e55690 4316 {
947216bf 4317 Elf_Internal_Rela outrel;
37e55690 4318 asection *sreloc;
37e55690
JJ		 4319
4320 outrel.r_offset = rel->r_offset
4321 + input_section->output_section->vma
4322 + input_section->output_offset;
4323 if (h != NULL && h->dynindx != -1)
4324 indx = h->dynindx;
4325 else
4326 indx = 0;
4327 if (r_type == R_386_TLS_LE_32)
4328 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4329 else
4330 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4331 sreloc = elf_section_data (input_section)->sreloc;
4332 if (sreloc == NULL)
4333 abort ();
59d6ffb2 4334 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4335 if (indx)
4336 continue;
4337 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4338 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4339 else
eb4ff4d6 4340 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4341 }
4342 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4343 relocation = elf_i386_tpoff (info, relocation);
37e55690 4344 else
eb4ff4d6 4345 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4346 break;
4347
252b5132
RH		 4348 default:
4349 break;
4350 }
4351
239e1f3a
AM		 4352 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4353 because such sections are not SEC_ALLOC and thus ld.so will
4354 not process them. */
8c694914 4355 if (unresolved_reloc
239e1f3a 4356 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4357 && h->def_dynamic)
4358 && _bfd_elf_section_offset (output_bfd, info, input_section,
4359 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4360 {
4361 (*_bfd_error_handler)
843fe662 4362 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4363 input_bfd,
4364 input_section,
6a30718d 4365 (long) rel->r_offset,
843fe662 4366 howto->name,
6a30718d 4367 h->root.root.string);
b34976b6 4368 return FALSE;
6a30718d 4369 }
83be169b 4370
cbe950e9 4371do_relocation:
252b5132
RH		 4372 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4373 contents, rel->r_offset,
55fd94b0 4374 relocation, 0);
252b5132 4375
62d78908 4376check_relocation_error:
cf5c0c5b 4377 if (r != bfd_reloc_ok)
252b5132 4378 {
cf5c0c5b 4379 const char *name;
ffb2e45b 4380
cf5c0c5b
AM		 4381 if (h != NULL)
4382 name = h->root.root.string;
4383 else
4384 {
4385 name = bfd_elf_string_from_elf_section (input_bfd,
4386 symtab_hdr->sh_link,
4387 sym->st_name);
4388 if (name == NULL)
b34976b6 4389 return FALSE;
cf5c0c5b
AM		 4390 if (*name == '\0')
4391 name = bfd_section_name (input_bfd, sec);
4392 }
ffb2e45b 4393
cf5c0c5b
AM		 4394 if (r == bfd_reloc_overflow)
4395 {
cf5c0c5b 4396 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4397 (info, (h ? &h->root : NULL), name, howto->name,
4398 (bfd_vma) 0, input_bfd, input_section,
4399 rel->r_offset)))
b34976b6 4400 return FALSE;
cf5c0c5b
AM		 4401 }
4402 else
4403 {
4404 (*_bfd_error_handler)
d003868e
AM		 4405 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4406 input_bfd, input_section,
cf5c0c5b 4407 (long) rel->r_offset, name, (int) r);
b34976b6 4408 return FALSE;
cf5c0c5b 4409 }
252b5132
RH		 4410 }
4411 }
4412
b34976b6 4413 return TRUE;
252b5132
RH		 4414}
4415
4416/* Finish up dynamic symbol handling. We set the contents of various
4417 dynamic sections here. */
4418
b34976b6 4419static bfd_boolean
55fd94b0
AM		 4420elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4421 struct bfd_link_info *info,
4422 struct elf_link_hash_entry *h,
4423 Elf_Internal_Sym *sym)
252b5132 4424{
6725bdbf 4425 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4426 unsigned plt_entry_size;
4427 const struct elf_i386_backend_data *abed;
252b5132 4428
6725bdbf 4429 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4430 if (htab == NULL)
4431 return FALSE;
252b5132 4432
25e762b9
RM		 4433 abed = get_elf_i386_backend_data (output_bfd);
4434 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4435
252b5132
RH		 4436 if (h->plt.offset != (bfd_vma) -1)
4437 {
252b5132
RH		 4438 bfd_vma plt_index;
4439 bfd_vma got_offset;
947216bf
AM		 4440 Elf_Internal_Rela rel;
4441 bfd_byte *loc;
cbe950e9
L		 4442 asection *plt, *gotplt, *relplt;
4443
4444 /* When building a static executable, use .iplt, .igot.plt and
4445 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4446 if (htab->elf.splt != NULL)
cbe950e9 4447 {
6de2ae4a
L		 4448 plt = htab->elf.splt;
4449 gotplt = htab->elf.sgotplt;
4450 relplt = htab->elf.srelplt;
cbe950e9
L		 4451 }
4452 else
4453 {
6de2ae4a
L		 4454 plt = htab->elf.iplt;
4455 gotplt = htab->elf.igotplt;
4456 relplt = htab->elf.irelplt;
cbe950e9 4457 }
252b5132
RH		 4458
4459 /* This symbol has an entry in the procedure linkage table. Set
4460 it up. */
4461
cbe950e9
L		 4462 if ((h->dynindx == -1
4463 && !((h->forced_local || info->executable)
4464 && h->def_regular
4465 && h->type == STT_GNU_IFUNC))
4466 || plt == NULL
4467 || gotplt == NULL
4468 || relplt == NULL)
cec7f46a 4469 abort ();
252b5132
RH		 4470
4471 /* Get the index in the procedure linkage table which
4472 corresponds to this symbol. This is the index of this symbol
4473 in all the symbols for which we are making plt entries. The
cbe950e9 4474 first entry in the procedure linkage table is reserved.
252b5132 4475
cbe950e9 4476 Get the offset into the .got table of the entry that
252b5132 4477 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4478 The first three are reserved.
6bbec505 4479
cbe950e9
L		 4480 For static executables, we don't reserve anything. */
4481
6de2ae4a 4482 if (plt == htab->elf.splt)
cbe950e9 4483 {
e1f98742
L		 4484 got_offset = h->plt.offset / plt_entry_size - 1;
4485 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4486 }
4487 else
4488 {
e1f98742
L		 4489 got_offset = h->plt.offset / plt_entry_size;
4490 got_offset = got_offset * 4;
cbe950e9 4491 }
252b5132
RH		 4492
4493 /* Fill in the entry in the procedure linkage table. */
4494 if (! info->shared)
4495 {
25e762b9
RM		 4496 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4497 abed->plt->plt_entry_size);
252b5132 4498 bfd_put_32 (output_bfd,
cbe950e9
L		 4499 (gotplt->output_section->vma
4500 + gotplt->output_offset
252b5132 4501 + got_offset),
25e762b9
RM		 4502 plt->contents + h->plt.offset
4503 + abed->plt->plt_got_offset);
eac338cf 4504
25e762b9 4505 if (abed->is_vxworks)
eac338cf
PB		 4506 {
4507 int s, k, reloc_index;
4508
4509 /* Create the R_386_32 relocation referencing the GOT
4510 for this PLT entry. */
4511
4512 /* S: Current slot number (zero-based). */
25e762b9
RM		 4513 s = ((h->plt.offset - abed->plt->plt_entry_size)
4514 / abed->plt->plt_entry_size);
eac338cf
PB		 4515 /* K: Number of relocations for PLTResolve. */
4516 if (info->shared)
4517 k = PLTRESOLVE_RELOCS_SHLIB;
4518 else
4519 k = PLTRESOLVE_RELOCS;
4520 /* Skip the PLTresolve relocations, and the relocations for
4521 the other PLT slots. */
4522 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4523 loc = (htab->srelplt2->contents + reloc_index
4524 * sizeof (Elf32_External_Rel));
4525
6de2ae4a
L		 4526 rel.r_offset = (htab->elf.splt->output_section->vma
4527 + htab->elf.splt->output_offset
eac338cf 4528 + h->plt.offset + 2),
7325306f 4529 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4530 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4531
4532 /* Create the R_386_32 relocation referencing the beginning of
4533 the PLT for this GOT entry. */
6de2ae4a
L		 4534 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4535 + htab->elf.sgotplt->output_offset
eac338cf 4536 + got_offset);
7325306f 4537 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4538 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4539 loc + sizeof (Elf32_External_Rel));
eac338cf 4540 }
252b5132
RH		 4541 }
4542 else
4543 {
25e762b9
RM		 4544 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4545 abed->plt->plt_entry_size);
252b5132 4546 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4547 plt->contents + h->plt.offset
4548 + abed->plt->plt_got_offset);
252b5132
RH		 4549 }
4550
252b5132
RH		 4551 /* Fill in the entry in the global offset table. */
4552 bfd_put_32 (output_bfd,
cbe950e9
L		 4553 (plt->output_section->vma
4554 + plt->output_offset
252b5132 4555 + h->plt.offset
25e762b9 4556 + abed->plt->plt_lazy_offset),
cbe950e9 4557 gotplt->contents + got_offset);
252b5132
RH		 4558
4559 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4560 rel.r_offset = (gotplt->output_section->vma
4561 + gotplt->output_offset
252b5132 4562 + got_offset);
cbe950e9
L		 4563 if (h->dynindx == -1
4564 || ((info->executable
4565 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4566 && h->def_regular
4567 && h->type == STT_GNU_IFUNC))
4568 {
4569 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4570 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4571 in the .got.plt section. */
4572 bfd_put_32 (output_bfd,
23209a78 4573 (h->root.u.def.value
cbe950e9
L		 4574 + h->root.u.def.section->output_section->vma
4575 + h->root.u.def.section->output_offset),
4576 gotplt->contents + got_offset);
4577 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4578 /* R_386_IRELATIVE comes last. */
4579 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4580 }
4581 else
e1f98742
L		 4582 {
4583 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4584 plt_index = htab->next_jump_slot_index++;
4585 }
cbe950e9 4586 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4587 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4588
e1f98742
L		 4589 /* Don't fill PLT entry for static executables. */
4590 if (plt == htab->elf.splt)
4591 {
4592 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4593 plt->contents + h->plt.offset
4594 + abed->plt->plt_reloc_offset);
4595 bfd_put_32 (output_bfd, - (h->plt.offset
4596 + abed->plt->plt_plt_offset + 4),
4597 plt->contents + h->plt.offset
4598 + abed->plt->plt_plt_offset);
4599 }
4600
f5385ebf 4601 if (!h->def_regular)
252b5132
RH		 4602 {
4603 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 4604 the .plt section. Leave the value if there were any
4605 relocations where pointer equality matters (this is a clue
51b64d56
AM		 4606 for the dynamic linker, to make function pointer
4607 comparisons work between an application and shared
c6585bbb
JJ		 4608 library), otherwise set it to zero. If a function is only
4609 called from a binary, there is no need to slow down
4610 shared libraries because of that. */
252b5132 4611 sym->st_shndx = SHN_UNDEF;
f5385ebf 4612 if (!h->pointer_equality_needed)
c6585bbb 4613 sym->st_value = 0;
252b5132
RH		 4614 }
4615 }
4616
13ae64f3 4617 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4618 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4619 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4620 {
947216bf 4621 Elf_Internal_Rela rel;
252b5132
RH		 4622
4623 /* This symbol has an entry in the global offset table. Set it
4624 up. */
4625
6de2ae4a 4626 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4627 abort ();
252b5132 4628
6de2ae4a
L		 4629 rel.r_offset = (htab->elf.sgot->output_section->vma
4630 + htab->elf.sgot->output_offset
dc810e39 4631 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4632
dd5724d5
AM		 4633 /* If this is a static link, or it is a -Bsymbolic link and the
4634 symbol is defined locally or was forced to be local because
4635 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4636 The entry in the global offset table will already have been
4637 initialized in the relocate_section function. */
710ab287 4638 if (h->def_regular
0018b0a3
L		 4639 && h->type == STT_GNU_IFUNC)
4640 {
710ab287
L		 4641 if (info->shared)
4642 {
4643 /* Generate R_386_GLOB_DAT. */
4644 goto do_glob_dat;
4645 }
4646 else
4647 {
cd2b2c10
L		 4648 asection *plt;
4649
710ab287
L		 4650 if (!h->pointer_equality_needed)
4651 abort ();
4652
4653 /* For non-shared object, we can't use .got.plt, which
4654 contains the real function addres if we need pointer
4655 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4656 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4657 bfd_put_32 (output_bfd,
4658 (plt->output_section->vma
4659 + plt->output_offset + h->plt.offset),
6de2ae4a 4660 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4661 return TRUE;
4662 }
0018b0a3
L		 4663 }
4664 else if (info->shared
4665 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4666 {
6725bdbf 4667 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4668 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4669 }
252b5132
RH		 4670 else
4671 {
dd5724d5 4672 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4673do_glob_dat:
6725bdbf 4674 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4675 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4676 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4677 }
4678
59d6ffb2 4679 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 4680 }
4681
f5385ebf 4682 if (h->needs_copy)
252b5132 4683 {
947216bf 4684 Elf_Internal_Rela rel;
252b5132
RH		 4685
4686 /* This symbol needs a copy reloc. Set it up. */
4687
ffb2e45b
AM		 4688 if (h->dynindx == -1
4689 || (h->root.type != bfd_link_hash_defined
4690 && h->root.type != bfd_link_hash_defweak)
4691 || htab->srelbss == NULL)
4692 abort ();
252b5132
RH		 4693
4694 rel.r_offset = (h->root.u.def.value
4695 + h->root.u.def.section->output_section->vma
4696 + h->root.u.def.section->output_offset);
4697 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 4698 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 4699 }
4700
b34976b6 4701 return TRUE;
252b5132
RH		 4702}
4703
c25bc9fc
L		 4704/* Finish up local dynamic symbol handling. We set the contents of
4705 various dynamic sections here. */
4706
4707static bfd_boolean
4708elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4709{
4710 struct elf_link_hash_entry *h
4711 = (struct elf_link_hash_entry *) *slot;
4712 struct bfd_link_info *info
23209a78 4713 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4714
4715 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4716 h, NULL);
4717}
4718
38701953
AM		 4719/* Used to decide how to sort relocs in an optimal manner for the
4720 dynamic linker, before writing them out. */
4721
4722static enum elf_reloc_type_class
7e612e98
AM		 4723elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4724 const asection *rel_sec ATTRIBUTE_UNUSED,
4725 const Elf_Internal_Rela *rela)
38701953 4726{
55fd94b0 4727 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4728 {
4729 case R_386_RELATIVE:
4730 return reloc_class_relative;
4731 case R_386_JUMP_SLOT:
4732 return reloc_class_plt;
4733 case R_386_COPY:
4734 return reloc_class_copy;
4735 default:
4736 return reloc_class_normal;
4737 }
4738}
4739
252b5132
RH		 4740/* Finish up the dynamic sections. */
4741
b34976b6 4742static bfd_boolean
55fd94b0
AM		 4743elf_i386_finish_dynamic_sections (bfd *output_bfd,
4744 struct bfd_link_info *info)
252b5132 4745{
6725bdbf 4746 struct elf_i386_link_hash_table *htab;
252b5132 4747 bfd *dynobj;
252b5132 4748 asection *sdyn;
25e762b9 4749 const struct elf_i386_backend_data *abed;
252b5132 4750
6725bdbf 4751 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4752 if (htab == NULL)
4753 return FALSE;
4754
ebe50bae 4755 dynobj = htab->elf.dynobj;
3d4d4302 4756 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4757 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4758
ebe50bae 4759 if (htab->elf.dynamic_sections_created)
252b5132 4760 {
252b5132
RH		 4761 Elf32_External_Dyn *dyncon, *dynconend;
4762
6de2ae4a 4763 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4764 abort ();
252b5132
RH		 4765
4766 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4767 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4768 for (; dyncon < dynconend; dyncon++)
4769 {
4770 Elf_Internal_Dyn dyn;
51b64d56 4771 asection *s;
252b5132
RH		 4772
4773 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4774
4775 switch (dyn.d_tag)
4776 {
4777 default:
25e762b9
RM		 4778 if (abed->is_vxworks
4779 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 4780 break;
0ac8d2ca 4781 continue;
252b5132
RH		 4782
4783 case DT_PLTGOT:
6de2ae4a 4784 s = htab->elf.sgotplt;
8c37241b 4785 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 4786 break;
4787
252b5132 4788 case DT_JMPREL:
6de2ae4a 4789 s = htab->elf.srelplt;
6348e046 4790 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 4791 break;
4792
4793 case DT_PLTRELSZ:
6de2ae4a 4794 s = htab->elf.srelplt;
eea6121a 4795 dyn.d_un.d_val = s->size;
252b5132
RH		 4796 break;
4797
4798 case DT_RELSZ:
4799 /* My reading of the SVR4 ABI indicates that the
4800 procedure linkage table relocs (DT_JMPREL) should be
4801 included in the overall relocs (DT_REL). This is
4802 what Solaris does. However, UnixWare can not handle
4803 that case. Therefore, we override the DT_RELSZ entry
6348e046 4804 here to make it not include the JMPREL relocs. */
6de2ae4a 4805 s = htab->elf.srelplt;
6348e046
AM		 4806 if (s == NULL)
4807 continue;
eea6121a 4808 dyn.d_un.d_val -= s->size;
6348e046
AM		 4809 break;
4810
4811 case DT_REL:
4812 /* We may not be using the standard ELF linker script.
4813 If .rel.plt is the first .rel section, we adjust
4814 DT_REL to not include it. */
6de2ae4a 4815 s = htab->elf.srelplt;
6348e046
AM		 4816 if (s == NULL)
4817 continue;
4818 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4819 continue;
eea6121a 4820 dyn.d_un.d_ptr += s->size;
252b5132
RH		 4821 break;
4822 }
0ac8d2ca
AM		 4823
4824 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 4825 }
4826
4827 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 4828 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 4829 {
4830 if (info->shared)
eac338cf 4831 {
25e762b9
RM		 4832 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
4833 abed->plt->plt0_entry_size);
4834 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4835 abed->plt0_pad_byte,
4836 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 4837 }
252b5132
RH		 4838 else
4839 {
25e762b9
RM		 4840 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
4841 abed->plt->plt0_entry_size);
4842 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4843 abed->plt0_pad_byte,
4844 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 4845 bfd_put_32 (output_bfd,
6de2ae4a
L		 4846 (htab->elf.sgotplt->output_section->vma
4847 + htab->elf.sgotplt->output_offset
6725bdbf 4848 + 4),
25e762b9
RM		 4849 htab->elf.splt->contents
4850 + abed->plt->plt0_got1_offset);
252b5132 4851 bfd_put_32 (output_bfd,
6de2ae4a
L		 4852 (htab->elf.sgotplt->output_section->vma
4853 + htab->elf.sgotplt->output_offset
6725bdbf 4854 + 8),
25e762b9
RM		 4855 htab->elf.splt->contents
4856 + abed->plt->plt0_got2_offset);
eac338cf 4857
25e762b9 4858 if (abed->is_vxworks)
eac338cf
PB		 4859 {
4860 Elf_Internal_Rela rel;
7325306f 4861
eac338cf
PB		 4862 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4863 On IA32 we use REL relocations so the addend goes in
4864 the PLT directly. */
6de2ae4a
L		 4865 rel.r_offset = (htab->elf.splt->output_section->vma
4866 + htab->elf.splt->output_offset
25e762b9 4867 + abed->plt->plt0_got1_offset);
7325306f 4868 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4869 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4870 htab->srelplt2->contents);
4871 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 4872 rel.r_offset = (htab->elf.splt->output_section->vma
4873 + htab->elf.splt->output_offset
25e762b9 4874 + abed->plt->plt0_got2_offset);
7325306f 4875 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4876 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4877 htab->srelplt2->contents +
4878 sizeof (Elf32_External_Rel));
4879 }
252b5132
RH		 4880 }
4881
4882 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4883 really seem like the right value. */
6de2ae4a 4884 elf_section_data (htab->elf.splt->output_section)
6725bdbf 4885 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 4886
4887 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 4888 if (abed->is_vxworks && !info->shared)
eac338cf 4889 {
25e762b9
RM		 4890 int num_plts = (htab->elf.splt->size
4891 / abed->plt->plt_entry_size) - 1;
4c9b0de6 4892 unsigned char *p;
eac338cf
PB		 4893
4894 p = htab->srelplt2->contents;
4895 if (info->shared)
4896 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4897 else
4898 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4899
4900 for (; num_plts; num_plts--)
4901 {
4902 Elf_Internal_Rela rel;
4903 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4904 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4905 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4906 p += sizeof (Elf32_External_Rel);
4907
4908 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4909 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4910 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4911 p += sizeof (Elf32_External_Rel);
4912 }
4913 }
252b5132
RH		 4914 }
4915 }
4916
6de2ae4a 4917 if (htab->elf.sgotplt)
252b5132 4918 {
56d4289c
L		 4919 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4920 {
4921 (*_bfd_error_handler)
4922 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4923 return FALSE;
4924 }
4925
12d0ee4a 4926 /* Fill in the first three entries in the global offset table. */
6de2ae4a 4927 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 4928 {
4929 bfd_put_32 (output_bfd,
55fd94b0 4930 (sdyn == NULL ? 0
12d0ee4a 4931 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 4932 htab->elf.sgotplt->contents);
4933 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4934 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 4935 }
252b5132 4936
6de2ae4a 4937 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 4938 }
8c37241b 4939
e41b3a13 4940 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 4941 if (htab->plt_eh_frame != NULL
4942 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 4943 {
4944 if (htab->elf.splt != NULL
4945 && htab->elf.splt->size != 0
4946 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
4947 && htab->elf.splt->output_section != NULL
4948 && htab->plt_eh_frame->output_section != NULL)
4949 {
4950 bfd_vma plt_start = htab->elf.splt->output_section->vma;
4951 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
4952 + htab->plt_eh_frame->output_offset
4953 + PLT_FDE_START_OFFSET;
4954 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4955 htab->plt_eh_frame->contents
4956 + PLT_FDE_START_OFFSET);
4957 }
4958 if (htab->plt_eh_frame->sec_info_type
dbaa2011 4959 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 4960 {
4961 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4962 htab->plt_eh_frame,
4963 htab->plt_eh_frame->contents))
4964 return FALSE;
4965 }
4966 }
4967
6de2ae4a
L		 4968 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4969 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 4970
c25bc9fc
L		 4971 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4972 htab_traverse (htab->loc_hash_table,
4973 elf_i386_finish_local_dynamic_symbol,
4974 info);
4975
b34976b6 4976 return TRUE;
252b5132
RH		 4977}
4978
4c45e5c9
JJ		 4979/* Return address for Ith PLT stub in section PLT, for relocation REL
4980 or (bfd_vma) -1 if it should not be included. */
4981
4982static bfd_vma
4983elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
4984 const arelent *rel ATTRIBUTE_UNUSED)
4985{
25e762b9 4986 return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
4c45e5c9
JJ		 4987}
4988
fdc90cb4
JJ		 4989/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
4990
4991static bfd_boolean
4992elf_i386_hash_symbol (struct elf_link_hash_entry *h)
4993{
4994 if (h->plt.offset != (bfd_vma) -1
4995 && !h->def_regular
4996 && !h->pointer_equality_needed)
4997 return FALSE;
4998
4999 return _bfd_elf_hash_symbol (h);
5000}
4c45e5c9 5001
d8045f23
NC		 5002/* Hook called by the linker routine which adds symbols from an object
5003 file. */
5004
5005static bfd_boolean
c16153ae 5006elf_i386_add_symbol_hook (bfd * abfd,
d8045f23
NC		 5007 struct bfd_link_info * info ATTRIBUTE_UNUSED,
5008 Elf_Internal_Sym * sym,
5009 const char ** namep ATTRIBUTE_UNUSED,
5010 flagword * flagsp ATTRIBUTE_UNUSED,
5011 asection ** secp ATTRIBUTE_UNUSED,
5012 bfd_vma * valp ATTRIBUTE_UNUSED)
5013{
c16153ae 5014 if ((abfd->flags & DYNAMIC) == 0
f64b2e8d
NC		 5015 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5016 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
5017 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC		 5018
5019 return TRUE;
5020}
5021
252b5132
RH		 5022#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
5023#define TARGET_LITTLE_NAME "elf32-i386"
5024#define ELF_ARCH bfd_arch_i386
ae95ffa6 5025#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5026#define ELF_MACHINE_CODE EM_386
5027#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5028
5029#define elf_backend_can_gc_sections 1
51b64d56 5030#define elf_backend_can_refcount 1
252b5132
RH		 5031#define elf_backend_want_got_plt 1
5032#define elf_backend_plt_readonly 1
5033#define elf_backend_want_plt_sym 0
5034#define elf_backend_got_header_size 12
e41b3a13 5035#define elf_backend_plt_alignment 4
252b5132 5036
8c29f035
AM		 5037/* Support RELA for objdump of prelink objects. */
5038#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5039#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5040
13ae64f3 5041#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5042
dd5724d5
AM		 5043#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5044#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
c25bc9fc 5045#define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
dd5724d5 5046#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5047#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM		 5048
5049#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5050#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5051#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5052#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5053#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5054#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5055#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5056#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5057#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5058#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5059#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5060#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5061#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5062#define elf_backend_relocate_section elf_i386_relocate_section
5063#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5064#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5065#define elf_backend_omit_section_dynsym \
5066 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 5067#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 5068#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23
NC		 5069#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
5070#undef elf_backend_post_process_headers
5071#define elf_backend_post_process_headers _bfd_elf_set_osabi
dd5724d5 5072
252b5132 5073#include "elf32-target.h"
2bc3c89a
AM		 5074
5075/* FreeBSD support. */
5076
5077#undef TARGET_LITTLE_SYM
5078#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
5079#undef TARGET_LITTLE_NAME
5080#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5081#undef ELF_OSABI
5082#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5083
5084/* The kernel recognizes executables as valid only if they carry a
5085 "FreeBSD" label in the ELF header. So we put this label on all
5086 executables and (for simplicity) also all other object files. */
5087
2bc3c89a 5088static void
d8045f23 5089elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5090{
d8045f23 5091 _bfd_elf_set_osabi (abfd, info);
2bc3c89a 5092
2bc3c89a
AM		 5093#ifdef OLD_FREEBSD_ABI_LABEL
5094 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5095 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 5096#endif
2bc3c89a
AM		 5097}
5098
5099#undef elf_backend_post_process_headers
d8045f23 5100#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5101#undef elf32_bed
5102#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5103
d8045f23
NC		 5104#undef elf_backend_add_symbol_hook
5105
2bc3c89a 5106#include "elf32-target.h"
eac338cf 5107
a6cc6b3b
RO		 5108/* Solaris 2. */
5109
5110#undef TARGET_LITTLE_SYM
5111#define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec
5112#undef TARGET_LITTLE_NAME
5113#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5114
5115/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5116 objects won't be recognized. */
5117#undef ELF_OSABI
5118
5119#undef elf32_bed
5120#define elf32_bed elf32_i386_sol2_bed
5121
7dc98aea
RO		 5122/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5123 boundary. */
5124#undef elf_backend_static_tls_alignment
5125#define elf_backend_static_tls_alignment 8
5126
a6cc6b3b
RO		 5127/* The Solaris 2 ABI requires a plt symbol on all platforms.
5128
5129 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5130 File, p.63. */
5131#undef elf_backend_want_plt_sym
5132#define elf_backend_want_plt_sym 1
5133
5134#include "elf32-target.h"
5135
a27e4371
RM		 5136/* Native Client support. */
5137
5138#undef TARGET_LITTLE_SYM
5139#define TARGET_LITTLE_SYM bfd_elf32_i386_nacl_vec
5140#undef TARGET_LITTLE_NAME
5141#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5142#undef elf32_bed
5143#define elf32_bed elf32_i386_nacl_bed
5144
5145#undef ELF_MAXPAGESIZE
5146#define ELF_MAXPAGESIZE 0x10000
5147
5148/* Restore defaults. */
5149#undef ELF_OSABI
5150#undef elf_backend_want_plt_sym
5151#define elf_backend_want_plt_sym 0
5152#undef elf_backend_post_process_headers
5153#define elf_backend_post_process_headers _bfd_elf_set_osabi
5154#undef elf_backend_static_tls_alignment
5155
5156/* NaCl uses substantially different PLT entries for the same effects. */
5157
5158#undef elf_backend_plt_alignment
5159#define elf_backend_plt_alignment 5
5160#define NACL_PLT_ENTRY_SIZE 64
5161#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5162
5163static const bfd_byte elf_i386_nacl_plt0_entry[] =
5164 {
5165 0xff, 0x35, /* pushl contents of address */
5166 0, 0, 0, 0, /* replaced with address of .got + 4. */
5167 0x8b, 0x0d, /* movl contents of address, %ecx */
5168 0, 0, 0, 0, /* replaced with address of .got + 8. */
5169 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5170 0xff, 0xe1 /* jmp *%ecx */
5171 };
5172
5173static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5174 {
5175 0x8b, 0x0d, /* movl contents of address, %ecx */
5176 0, 0, 0, 0, /* replaced with GOT slot address. */
5177 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5178 0xff, 0xe1, /* jmp *%ecx */
5179
5180 /* Pad to the next 32-byte boundary with nop instructions. */
5181 0x90,
5182 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5183 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5184
5185 /* Lazy GOT entries point here (32-byte aligned). */
5186 0x68, /* pushl immediate */
5187 0, 0, 0, 0, /* replaced with reloc offset. */
5188 0xe9, /* jmp relative */
5189 0, 0, 0, 0, /* replaced with offset to .plt. */
5190
5191 /* Pad to the next 32-byte boundary with nop instructions. */
5192 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5193 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5194 0x90, 0x90
5195 };
5196
5197static const bfd_byte
5198elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5199 {
5200 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5201 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5202 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5203 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5204
5205 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5206 so pad to that size with nop instructions. */
5207 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5208 };
5209
5210static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5211 {
5212 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5213 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5214 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5215 0xff, 0xe1, /* jmp *%ecx */
5216
5217 /* Pad to the next 32-byte boundary with nop instructions. */
5218 0x90,
5219 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5220 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5221
5222 /* Lazy GOT entries point here (32-byte aligned). */
5223 0x68, /* pushl immediate */
5224 0, 0, 0, 0, /* replaced with offset into relocation table. */
5225 0xe9, /* jmp relative */
5226 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5227
5228 /* Pad to the next 32-byte boundary with nop instructions. */
5229 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5230 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5231 0x90, 0x90
5232 };
5233
5234static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5235 {
5236#if (PLT_CIE_LENGTH != 20 \
5237 || PLT_FDE_LENGTH != 36 \
5238 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5239 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5240# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5241#endif
5242 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5243 0, 0, 0, 0, /* CIE ID */
5244 1, /* CIE version */
5245 'z', 'R', 0, /* Augmentation string */
5246 1, /* Code alignment factor */
5247 0x7c, /* Data alignment factor: -4 */
5248 8, /* Return address column */
5249 1, /* Augmentation size */
5250 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5251 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5252 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5253 DW_CFA_nop, DW_CFA_nop,
5254
5255 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5256 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5257 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5258 0, 0, 0, 0, /* .plt size goes here */
5259 0, /* Augmentation size */
5260 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5261 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5262 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5263 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5264 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5265 13, /* Block length */
5266 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5267 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5268 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5269 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5270 DW_CFA_nop, DW_CFA_nop
5271 };
5272
5273static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5274 {
5275 elf_i386_nacl_plt0_entry, /* plt0_entry */
5276 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5277 2, /* plt0_got1_offset */
5278 8, /* plt0_got2_offset */
5279 elf_i386_nacl_plt_entry, /* plt_entry */
5280 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5281 2, /* plt_got_offset */
5282 33, /* plt_reloc_offset */
5283 38, /* plt_plt_offset */
5284 32, /* plt_lazy_offset */
5285 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5286 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5287 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5288 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5289 };
5290
5291static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5292 {
5293 &elf_i386_nacl_plt, /* plt */
5294 0x90, /* plt0_pad_byte: nop insn */
5295 0, /* is_vxworks */
5296 };
5297
5298#undef elf_backend_arch_data
5299#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5300
5a68afcf
RM		 5301#undef elf_backend_modify_segment_map
5302#define elf_backend_modify_segment_map nacl_modify_segment_map
5303#undef elf_backend_modify_program_headers
5304#define elf_backend_modify_program_headers nacl_modify_program_headers
5305
a27e4371
RM		 5306#include "elf32-target.h"
5307
5a68afcf
RM		 5308/* Restore defaults. */
5309#undef elf_backend_modify_segment_map
5310#undef elf_backend_modify_program_headers
5311
eac338cf
PB		 5312/* VxWorks support. */
5313
5314#undef TARGET_LITTLE_SYM
5315#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
5316#undef TARGET_LITTLE_NAME
5317#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5318#undef ELF_OSABI
a27e4371
RM		 5319#undef elf_backend_plt_alignment
5320#define elf_backend_plt_alignment 4
eac338cf 5321
23209a78
RM		 5322static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5323 {
25e762b9 5324 &elf_i386_plt, /* plt */
23209a78
RM		 5325 0x90, /* plt0_pad_byte */
5326 1, /* is_vxworks */
5327 };
eac338cf 5328
23209a78
RM		 5329#undef elf_backend_arch_data
5330#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5331
13285a1b
AM		 5332#undef elf_backend_relocs_compatible
5333#undef elf_backend_post_process_headers
eac338cf
PB		 5334#undef elf_backend_add_symbol_hook
5335#define elf_backend_add_symbol_hook \
5336 elf_vxworks_add_symbol_hook
5337#undef elf_backend_link_output_symbol_hook
5338#define elf_backend_link_output_symbol_hook \
9c72ff84 5339 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5340#undef elf_backend_emit_relocs
5341#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5342#undef elf_backend_final_write_processing
5343#define elf_backend_final_write_processing \
5344 elf_vxworks_final_write_processing
7dc98aea 5345#undef elf_backend_static_tls_alignment
eac338cf
PB		 5346
5347/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5348 define it. */
5349#undef elf_backend_want_plt_sym
5350#define elf_backend_want_plt_sym 1
5351
5352#undef elf32_bed
5353#define elf32_bed elf32_i386_vxworks_bed
5354
5355#include "elf32-target.h"
GDB Binutils - Deliverables
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