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Count size relocation as PC-relative relocation
[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
b2a8e766 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
1d7e9d18 3 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
9f973f28 4 Free Software Foundation, Inc.
252b5132 5
571fe01f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
571fe01f
NC		 8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
571fe01f 11 (at your option) any later version.
252b5132 12
571fe01f
NC		 13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
571fe01f
NC		 18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
cd123cb7
NC		 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
252b5132 22
252b5132 23#include "sysdep.h"
3db64b00 24#include "bfd.h"
252b5132
RH		 25#include "bfdlink.h"
26#include "libbfd.h"
27#include "elf-bfd.h"
5a68afcf 28#include "elf-nacl.h"
eac338cf 29#include "elf-vxworks.h"
142411ca 30#include "bfd_stdint.h"
c25bc9fc
L		 31#include "objalloc.h"
32#include "hashtab.h"
e41b3a13 33#include "dwarf2.h"
252b5132 34
55fd94b0
AM		 35/* 386 uses REL relocations instead of RELA. */
36#define USE_REL 1
252b5132
RH		 37
38#include "elf/i386.h"
39
40static reloc_howto_type elf_howto_table[]=
41{
b34976b6 42 HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
1b452ec6 43 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 44 TRUE, 0x00000000, 0x00000000, FALSE),
45 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 46 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 47 TRUE, 0xffffffff, 0xffffffff, FALSE),
48 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 49 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 50 TRUE, 0xffffffff, 0xffffffff, TRUE),
51 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 52 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 53 TRUE, 0xffffffff, 0xffffffff, FALSE),
54 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 55 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 56 TRUE, 0xffffffff, 0xffffffff, TRUE),
57 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 58 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 59 TRUE, 0xffffffff, 0xffffffff, FALSE),
60 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 61 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 62 TRUE, 0xffffffff, 0xffffffff, FALSE),
63 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 64 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 65 TRUE, 0xffffffff, 0xffffffff, FALSE),
66 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 67 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 68 TRUE, 0xffffffff, 0xffffffff, FALSE),
69 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 70 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 71 TRUE, 0xffffffff, 0xffffffff, FALSE),
72 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 73 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 74 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 75
dc47f327
AM		 76 /* We have a gap in the reloc numbers here.
77 R_386_standard counts the number up to this point, and
78 R_386_ext_offset is the value to subtract from a reloc type of
79 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 80#define R_386_standard (R_386_GOTPC + 1)
81#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 82
37e55690 83 /* These relocs are a GNU extension. */
b34976b6 84 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 85 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 86 TRUE, 0xffffffff, 0xffffffff, FALSE),
87 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 88 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 89 TRUE, 0xffffffff, 0xffffffff, FALSE),
90 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 91 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 92 TRUE, 0xffffffff, 0xffffffff, FALSE),
93 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 94 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 95 TRUE, 0xffffffff, 0xffffffff, FALSE),
96 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 97 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 98 TRUE, 0xffffffff, 0xffffffff, FALSE),
99 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 100 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 101 TRUE, 0xffffffff, 0xffffffff, FALSE),
102 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 103 bfd_elf_generic_reloc, "R_386_16",
b34976b6 104 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 105 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 106 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 107 TRUE, 0xffff, 0xffff, TRUE),
108 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 109 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 110 TRUE, 0xff, 0xff, FALSE),
111 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 112 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 113 TRUE, 0xff, 0xff, TRUE),
dc47f327 114
55fd94b0
AM		 115#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
116#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 117 /* These are common with Solaris TLS implementation. */
b34976b6 118 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 119 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 120 TRUE, 0xffffffff, 0xffffffff, FALSE),
121 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 122 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 123 TRUE, 0xffffffff, 0xffffffff, FALSE),
124 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 125 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 126 TRUE, 0xffffffff, 0xffffffff, FALSE),
127 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 128 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 129 TRUE, 0xffffffff, 0xffffffff, FALSE),
130 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 131 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 132 TRUE, 0xffffffff, 0xffffffff, FALSE),
133 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 134 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 135 TRUE, 0xffffffff, 0xffffffff, FALSE),
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 */
428 elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
429
430 /* pr_pid */
261b8d08 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 */
446 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 447
61adc1a4 448 /* pr_pid */
261b8d08 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
61adc1a4
NC		 474 elf_tdata (abfd)->core_program
475 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
476 elf_tdata (abfd)->core_command
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. */
261b8d08
PA		 487 elf_tdata (abfd)->core_pid
488 = bfd_get_32 (abfd, note->descdata + 12);
61adc1a4
NC		 489 elf_tdata (abfd)->core_program
490 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
491 elf_tdata (abfd)->core_command
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
AM		 499 {
500 char *command = elf_tdata (abfd)->core_command;
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
a50b1753 940 ret = (struct elf_i386_link_hash_table *) bfd_malloc (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
6725bdbf
AM		 953 ret->sdynbss = NULL;
954 ret->srelbss = NULL;
332ce62b 955 ret->plt_eh_frame = NULL;
7a624474 956 ret->tls_ldm_got.refcount = 0;
5ae0bfb6 957 ret->next_tls_desc_index = 0;
67a4f2b7 958 ret->sgotplt_jump_table_size = 0;
87d72d41 959 ret->sym_cache.abfd = NULL;
eac338cf 960 ret->srelplt2 = NULL;
9f03412a 961 ret->tls_module_base = NULL;
e1f98742
L		 962 ret->next_jump_slot_index = 0;
963 ret->next_irelative_index = 0;
6725bdbf 964
c25bc9fc
L		 965 ret->loc_hash_table = htab_try_create (1024,
966 elf_i386_local_htab_hash,
967 elf_i386_local_htab_eq,
968 NULL);
969 ret->loc_hash_memory = objalloc_create ();
970 if (!ret->loc_hash_table || !ret->loc_hash_memory)
971 {
972 free (ret);
973 return NULL;
974 }
975
ebe50bae 976 return &ret->elf.root;
252b5132
RH		 977}
978
c25bc9fc
L		 979/* Destroy an i386 ELF linker hash table. */
980
981static void
982elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash)
983{
984 struct elf_i386_link_hash_table *htab
985 = (struct elf_i386_link_hash_table *) hash;
986
987 if (htab->loc_hash_table)
988 htab_delete (htab->loc_hash_table);
989 if (htab->loc_hash_memory)
990 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
991 _bfd_generic_link_hash_table_free (hash);
992}
993
6725bdbf
AM		 994/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
995 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
996 hash table. */
997
b34976b6 998static bfd_boolean
55fd94b0 999elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 1000{
1001 struct elf_i386_link_hash_table *htab;
1002
6725bdbf 1003 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 1004 return FALSE;
6725bdbf 1005
6de2ae4a 1006 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1007 if (htab == NULL)
1008 return FALSE;
1009
3d4d4302 1010 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
6725bdbf 1011 if (!info->shared)
3d4d4302 1012 htab->srelbss = bfd_get_linker_section (dynobj, ".rel.bss");
6725bdbf 1013
6de2ae4a 1014 if (!htab->sdynbss
6725bdbf
AM		 1015 || (!info->shared && !htab->srelbss))
1016 abort ();
1017
23209a78 1018 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1019 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1020 &htab->srelplt2))
711de32c 1021 return FALSE;
eac338cf 1022
e41b3a13 1023 if (!info->no_ld_generated_unwind_info
2fe0fd06 1024 && htab->plt_eh_frame == NULL
e4de50d4 1025 && htab->elf.splt != NULL)
e41b3a13 1026 {
bbf96e4e
L		 1027 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1028 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1029 | SEC_LINKER_CREATED);
e41b3a13 1030 htab->plt_eh_frame
bbf96e4e 1031 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ		 1032 if (htab->plt_eh_frame == NULL
1033 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1034 return FALSE;
e41b3a13
JJ		 1035 }
1036
b34976b6 1037 return TRUE;
6725bdbf
AM		 1038}
1039
ebe50bae
AM		 1040/* Copy the extra info we tack onto an elf_link_hash_entry. */
1041
51b64d56 1042static void
fcfa13d2 1043elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1044 struct elf_link_hash_entry *dir,
1045 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1046{
1047 struct elf_i386_link_hash_entry *edir, *eind;
1048
1049 edir = (struct elf_i386_link_hash_entry *) dir;
1050 eind = (struct elf_i386_link_hash_entry *) ind;
1051
bbd7ec4a 1052 if (eind->dyn_relocs != NULL)
ebe50bae 1053 {
bbd7ec4a
AM		 1054 if (edir->dyn_relocs != NULL)
1055 {
e03a8ed8
L		 1056 struct elf_dyn_relocs **pp;
1057 struct elf_dyn_relocs *p;
bbd7ec4a 1058
fcfa13d2 1059 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1060 list. Merge any entries against the same section. */
1061 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1062 {
e03a8ed8 1063 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1064
1065 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1066 if (q->sec == p->sec)
1067 {
1068 q->pc_count += p->pc_count;
1069 q->count += p->count;
1070 *pp = p->next;
1071 break;
1072 }
1073 if (q == NULL)
1074 pp = &p->next;
1075 }
1076 *pp = edir->dyn_relocs;
1077 }
1078
ebe50bae
AM		 1079 edir->dyn_relocs = eind->dyn_relocs;
1080 eind->dyn_relocs = NULL;
1081 }
ebe50bae 1082
cd67d266
JJ		 1083 if (ind->root.type == bfd_link_hash_indirect
1084 && dir->got.refcount <= 0)
1085 {
1086 edir->tls_type = eind->tls_type;
1087 eind->tls_type = GOT_UNKNOWN;
1088 }
81848ca0
AM		 1089
1090 if (ELIMINATE_COPY_RELOCS
1091 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1092 && dir->dynamic_adjusted)
1093 {
1094 /* If called to transfer flags for a weakdef during processing
1095 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1096 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1097 dir->ref_dynamic |= ind->ref_dynamic;
1098 dir->ref_regular |= ind->ref_regular;
1099 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1100 dir->needs_plt |= ind->needs_plt;
1101 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1102 }
81848ca0 1103 else
fcfa13d2 1104 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
ebe50bae
AM		 1105}
1106
142411ca
L		 1107/* Return TRUE if the TLS access code sequence support transition
1108 from R_TYPE. */
1109
1110static bfd_boolean
1111elf_i386_check_tls_transition (bfd *abfd, asection *sec,
1112 bfd_byte *contents,
1113 Elf_Internal_Shdr *symtab_hdr,
1114 struct elf_link_hash_entry **sym_hashes,
1115 unsigned int r_type,
1116 const Elf_Internal_Rela *rel,
1117 const Elf_Internal_Rela *relend)
13ae64f3 1118{
142411ca
L		 1119 unsigned int val, type;
1120 unsigned long r_symndx;
1121 struct elf_link_hash_entry *h;
1122 bfd_vma offset;
1123
1124 /* Get the section contents. */
1125 if (contents == NULL)
1126 {
1127 if (elf_section_data (sec)->this_hdr.contents != NULL)
1128 contents = elf_section_data (sec)->this_hdr.contents;
1129 else
1130 {
1131 /* FIXME: How to better handle error condition? */
1132 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1133 return FALSE;
13ae64f3 1134
142411ca
L		 1135 /* Cache the section contents for elf_link_input_bfd. */
1136 elf_section_data (sec)->this_hdr.contents = contents;
1137 }
1138 }
1139
1140 offset = rel->r_offset;
13ae64f3 1141 switch (r_type)
142411ca
L		 1142 {
1143 case R_386_TLS_GD:
1144 case R_386_TLS_LDM:
1145 if (offset < 2 || (rel + 1) >= relend)
1146 return FALSE;
1147
1148 type = bfd_get_8 (abfd, contents + offset - 2);
1149 if (r_type == R_386_TLS_GD)
1150 {
09e8c3bf 1151 /* Check transition from GD access model. Only
142411ca
L		 1152 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1153 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1154 can transit to different access model. */
1155 if ((offset + 10) > sec->size ||
1156 (type != 0x8d && type != 0x04))
1157 return FALSE;
1158
1159 val = bfd_get_8 (abfd, contents + offset - 1);
1160 if (type == 0x04)
1161 {
1162 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1163 if (offset < 3)
1164 return FALSE;
1165
1166 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1167 return FALSE;
1168
1169 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1170 return FALSE;
1171 }
1172 else
1173 {
1174 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1175 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1176 return FALSE;
1177
1178 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1179 return FALSE;
1180 }
1181 }
1182 else
1183 {
1184 /* Check transition from LD access model. Only
1185 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1186 can transit to different access model. */
1187 if (type != 0x8d || (offset + 9) > sec->size)
1188 return FALSE;
1189
1190 val = bfd_get_8 (abfd, contents + offset - 1);
1191 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1192 return FALSE;
1193 }
1194
1195 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1196 return FALSE;
1197
1198 r_symndx = ELF32_R_SYM (rel[1].r_info);
1199 if (r_symndx < symtab_hdr->sh_info)
1200 return FALSE;
1201
1202 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b
L		 1203 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1204 may be versioned. */
142411ca
L		 1205 return (h != NULL
1206 && h->root.root.string != NULL
1207 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1208 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
c4fb387b
L		 1209 && (strncmp (h->root.root.string, "___tls_get_addr",
1210 15) == 0));
142411ca
L		 1211
1212 case R_386_TLS_IE:
1213 /* Check transition from IE access model:
1214 movl foo@indntpoff(%rip), %eax
1215 movl foo@indntpoff(%rip), %reg
1216 addl foo@indntpoff(%rip), %reg
1217 */
1218
1219 if (offset < 1 || (offset + 4) > sec->size)
1220 return FALSE;
1221
1222 /* Check "movl foo@tpoff(%rip), %eax" first. */
1223 val = bfd_get_8 (abfd, contents + offset - 1);
1224 if (val == 0xa1)
1225 return TRUE;
1226
1227 if (offset < 2)
1228 return FALSE;
1229
1230 /* Check movl|addl foo@tpoff(%rip), %reg. */
1231 type = bfd_get_8 (abfd, contents + offset - 2);
1232 return ((type == 0x8b || type == 0x03)
1233 && (val & 0xc7) == 0x05);
1234
1235 case R_386_TLS_GOTIE:
1236 case R_386_TLS_IE_32:
1237 /* Check transition from {IE_32,GOTIE} access model:
1238 subl foo@{tpoff,gontoff}(%reg1), %reg2
1239 movl foo@{tpoff,gontoff}(%reg1), %reg2
1240 addl foo@{tpoff,gontoff}(%reg1), %reg2
1241 */
1242
1243 if (offset < 2 || (offset + 4) > sec->size)
1244 return FALSE;
1245
1246 val = bfd_get_8 (abfd, contents + offset - 1);
1247 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1248 return FALSE;
1249
1250 type = bfd_get_8 (abfd, contents + offset - 2);
1251 return type == 0x8b || type == 0x2b || type == 0x03;
1252
1253 case R_386_TLS_GOTDESC:
1254 /* Check transition from GDesc access model:
1255 leal x@tlsdesc(%ebx), %eax
1256
1257 Make sure it's a leal adding ebx to a 32-bit offset
1258 into any register, although it's probably almost always
1259 going to be eax. */
1260
1261 if (offset < 2 || (offset + 4) > sec->size)
1262 return FALSE;
1263
1264 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1265 return FALSE;
1266
1267 val = bfd_get_8 (abfd, contents + offset - 1);
1268 return (val & 0xc7) == 0x83;
1269
1270 case R_386_TLS_DESC_CALL:
1271 /* Check transition from GDesc access model:
1272 call *x@tlsdesc(%rax)
1273 */
1274 if (offset + 2 <= sec->size)
1275 {
1276 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM		 1277 static const unsigned char call[] = { 0xff, 0x10 };
1278 return memcmp (contents + offset, call, 2) == 0;
142411ca
L		 1279 }
1280
1281 return FALSE;
1282
1283 default:
1284 abort ();
1285 }
1286}
1287
1288/* Return TRUE if the TLS access transition is OK or no transition
1289 will be performed. Update R_TYPE if there is a transition. */
1290
1291static bfd_boolean
1292elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1293 asection *sec, bfd_byte *contents,
1294 Elf_Internal_Shdr *symtab_hdr,
1295 struct elf_link_hash_entry **sym_hashes,
1296 unsigned int *r_type, int tls_type,
1297 const Elf_Internal_Rela *rel,
1298 const Elf_Internal_Rela *relend,
4c544807
L		 1299 struct elf_link_hash_entry *h,
1300 unsigned long r_symndx)
142411ca
L		 1301{
1302 unsigned int from_type = *r_type;
1303 unsigned int to_type = from_type;
1304 bfd_boolean check = TRUE;
1305
bb1cb422
L		 1306 /* Skip TLS transition for functions. */
1307 if (h != NULL
1308 && (h->type == STT_FUNC
1309 || h->type == STT_GNU_IFUNC))
1310 return TRUE;
1311
142411ca 1312 switch (from_type)
13ae64f3
JJ		 1313 {
1314 case R_386_TLS_GD:
67a4f2b7
AO		 1315 case R_386_TLS_GOTDESC:
1316 case R_386_TLS_DESC_CALL:
13ae64f3 1317 case R_386_TLS_IE_32:
37e55690
JJ		 1318 case R_386_TLS_IE:
1319 case R_386_TLS_GOTIE:
1d85728f 1320 if (info->executable)
142411ca
L		 1321 {
1322 if (h == NULL)
1323 to_type = R_386_TLS_LE_32;
1324 else if (from_type != R_386_TLS_IE
1325 && from_type != R_386_TLS_GOTIE)
1326 to_type = R_386_TLS_IE_32;
1327 }
1328
1329 /* When we are called from elf_i386_relocate_section, CONTENTS
1330 isn't NULL and there may be additional transitions based on
1331 TLS_TYPE. */
1332 if (contents != NULL)
1333 {
1334 unsigned int new_to_type = to_type;
1335
1d85728f 1336 if (info->executable
142411ca
L		 1337 && h != NULL
1338 && h->dynindx == -1
1339 && (tls_type & GOT_TLS_IE))
1340 new_to_type = R_386_TLS_LE_32;
1341
1342 if (to_type == R_386_TLS_GD
1343 || to_type == R_386_TLS_GOTDESC
1344 || to_type == R_386_TLS_DESC_CALL)
1345 {
1346 if (tls_type == GOT_TLS_IE_POS)
1347 new_to_type = R_386_TLS_GOTIE;
1348 else if (tls_type & GOT_TLS_IE)
1349 new_to_type = R_386_TLS_IE_32;
1350 }
1351
1352 /* We checked the transition before when we were called from
1353 elf_i386_check_relocs. We only want to check the new
1354 transition which hasn't been checked before. */
1355 check = new_to_type != to_type && from_type == to_type;
1356 to_type = new_to_type;
1357 }
1358
1359 break;
1360
13ae64f3 1361 case R_386_TLS_LDM:
1d85728f 1362 if (info->executable)
142411ca
L		 1363 to_type = R_386_TLS_LE_32;
1364 break;
1365
1366 default:
1367 return TRUE;
1368 }
1369
1370 /* Return TRUE if there is no transition. */
1371 if (from_type == to_type)
1372 return TRUE;
1373
1374 /* Check if the transition can be performed. */
1375 if (check
1376 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1377 symtab_hdr, sym_hashes,
1378 from_type, rel, relend))
1379 {
2f629d23 1380 reloc_howto_type *from, *to;
4c544807 1381 const char *name;
142411ca
L		 1382
1383 from = elf_i386_rtype_to_howto (abfd, from_type);
1384 to = elf_i386_rtype_to_howto (abfd, to_type);
1385
4c544807
L		 1386 if (h)
1387 name = h->root.root.string;
1388 else
1389 {
4c544807 1390 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1391
4c544807 1392 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1393 if (htab == NULL)
1394 name = "*unknown*";
1395 else
1396 {
1397 Elf_Internal_Sym *isym;
1398
1399 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1400 abfd, r_symndx);
1401 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1402 }
4c544807
L		 1403 }
1404
142411ca
L		 1405 (*_bfd_error_handler)
1406 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1407 "in section `%A' failed"),
4c544807 1408 abfd, sec, from->name, to->name, name,
142411ca
L		 1409 (unsigned long) rel->r_offset);
1410 bfd_set_error (bfd_error_bad_value);
1411 return FALSE;
13ae64f3
JJ		 1412 }
1413
142411ca
L		 1414 *r_type = to_type;
1415 return TRUE;
13ae64f3
JJ		 1416}
1417
252b5132 1418/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1419 calculate needed space in the global offset table, procedure linkage
1420 table, and dynamic reloc sections. */
252b5132 1421
b34976b6 1422static bfd_boolean
55fd94b0
AM		 1423elf_i386_check_relocs (bfd *abfd,
1424 struct bfd_link_info *info,
1425 asection *sec,
1426 const Elf_Internal_Rela *relocs)
252b5132 1427{
6725bdbf 1428 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1429 Elf_Internal_Shdr *symtab_hdr;
1430 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1431 const Elf_Internal_Rela *rel;
1432 const Elf_Internal_Rela *rel_end;
252b5132
RH		 1433 asection *sreloc;
1434
1049f94e 1435 if (info->relocatable)
b34976b6 1436 return TRUE;
252b5132 1437
0ffa91dd
NC		 1438 BFD_ASSERT (is_i386_elf (abfd));
1439
6725bdbf 1440 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1441 if (htab == NULL)
1442 return FALSE;
1443
0ffa91dd 1444 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1445 sym_hashes = elf_sym_hashes (abfd);
252b5132 1446
252b5132
RH		 1447 sreloc = NULL;
1448
1449 rel_end = relocs + sec->reloc_count;
1450 for (rel = relocs; rel < rel_end; rel++)
1451 {
13ae64f3 1452 unsigned int r_type;
252b5132
RH		 1453 unsigned long r_symndx;
1454 struct elf_link_hash_entry *h;
4c544807
L		 1455 Elf_Internal_Sym *isym;
1456 const char *name;
06a6a421 1457 bfd_boolean size_reloc;
252b5132
RH		 1458
1459 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1460 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1461
d9bc7a44 1462 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1463 {
d003868e
AM		 1464 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1465 abfd,
8f615d07 1466 r_symndx);
b34976b6 1467 return FALSE;
f5f31454
L		 1468 }
1469
252b5132 1470 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1471 {
1472 /* A local symbol. */
c2e61a4e
L		 1473 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1474 abfd, r_symndx);
1475 if (isym == NULL)
1476 return FALSE;
c25bc9fc
L		 1477
1478 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1479 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1480 {
9fff0c39 1481 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1482 if (h == NULL)
c2e61a4e 1483 return FALSE;
6bbec505 1484
c25bc9fc
L		 1485 /* Fake a STT_GNU_IFUNC symbol. */
1486 h->type = STT_GNU_IFUNC;
1487 h->def_regular = 1;
1488 h->ref_regular = 1;
1489 h->forced_local = 1;
1490 h->root.type = bfd_link_hash_defined;
1491 }
1492 else
1493 h = NULL;
1494 }
252b5132 1495 else
71cb9464 1496 {
4c544807 1497 isym = NULL;
71cb9464
L		 1498 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1499 while (h->root.type == bfd_link_hash_indirect
1500 || h->root.type == bfd_link_hash_warning)
1501 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1502 }
cbe950e9 1503
c25bc9fc
L		 1504 if (h != NULL)
1505 {
cbe950e9
L		 1506 /* Create the ifunc sections for static executables. If we
1507 never see an indirect function symbol nor we are building
1508 a static executable, those sections will be empty and
1509 won't appear in output. */
1510 switch (r_type)
1511 {
1512 default:
1513 break;
1514
1515 case R_386_32:
1516 case R_386_PC32:
1517 case R_386_PLT32:
1518 case R_386_GOT32:
1519 case R_386_GOTOFF:
9d4057ee
AM		 1520 if (htab->elf.dynobj == NULL)
1521 htab->elf.dynobj = abfd;
1522 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1523 return FALSE;
cbe950e9
L		 1524 break;
1525 }
1526
ad1e85de
L		 1527 /* It is referenced by a non-shared object. */
1528 h->ref_regular = 1;
71cb9464 1529 }
252b5132 1530
142411ca
L		 1531 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1532 symtab_hdr, sym_hashes,
1533 &r_type, GOT_UNKNOWN,
23209a78 1534 rel, rel_end, h, r_symndx))
c2e61a4e 1535 return FALSE;
13ae64f3
JJ		 1536
1537 switch (r_type)
252b5132 1538 {
37e55690
JJ		 1539 case R_386_TLS_LDM:
1540 htab->tls_ldm_got.refcount += 1;
1541 goto create_got;
1542
1543 case R_386_PLT32:
1544 /* This symbol requires a procedure linkage table entry. We
1545 actually build the entry in adjust_dynamic_symbol,
1546 because this might be a case of linking PIC code which is
1547 never referenced by a dynamic object, in which case we
1548 don't need to generate a procedure linkage table entry
1549 after all. */
1550
1551 /* If this is a local symbol, we resolve it directly without
1552 creating a procedure linkage table entry. */
1553 if (h == NULL)
1554 continue;
1555
f5385ebf 1556 h->needs_plt = 1;
37e55690
JJ		 1557 h->plt.refcount += 1;
1558 break;
1559
6a3e1bae 1560 case R_386_SIZE32:
06a6a421 1561 size_reloc = TRUE;
6a3e1bae
L		 1562 goto do_size;
1563
13ae64f3 1564 case R_386_TLS_IE_32:
37e55690
JJ		 1565 case R_386_TLS_IE:
1566 case R_386_TLS_GOTIE:
1d85728f 1567 if (!info->executable)
13ae64f3 1568 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1569 /* Fall through */
1570
252b5132 1571 case R_386_GOT32:
13ae64f3 1572 case R_386_TLS_GD:
67a4f2b7
AO		 1573 case R_386_TLS_GOTDESC:
1574 case R_386_TLS_DESC_CALL:
252b5132 1575 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1576 {
1577 int tls_type, old_tls_type;
1578
1579 switch (r_type)
1580 {
1581 default:
1582 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1583 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1584 case R_386_TLS_GOTDESC:
1585 case R_386_TLS_DESC_CALL:
1586 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1587 case R_386_TLS_IE_32:
1588 if (ELF32_R_TYPE (rel->r_info) == r_type)
1589 tls_type = GOT_TLS_IE_NEG;
1590 else
ebcfb3c0
JJ		 1591 /* If this is a GD->IE transition, we may use either of
1592 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1593 tls_type = GOT_TLS_IE;
1594 break;
1595 case R_386_TLS_IE:
1596 case R_386_TLS_GOTIE:
1597 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1598 }
1599
1600 if (h != NULL)
1601 {
1602 h->got.refcount += 1;
1603 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1604 }
1605 else
1606 {
1607 bfd_signed_vma *local_got_refcounts;
1608
1609 /* This is a global offset table entry for a local symbol. */
1610 local_got_refcounts = elf_local_got_refcounts (abfd);
1611 if (local_got_refcounts == NULL)
1612 {
1613 bfd_size_type size;
1614
1615 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1616 size *= (sizeof (bfd_signed_vma)
1617 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1618 local_got_refcounts = (bfd_signed_vma *)
1619 bfd_zalloc (abfd, size);
13ae64f3 1620 if (local_got_refcounts == NULL)
c2e61a4e 1621 return FALSE;
13ae64f3 1622 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1623 elf_i386_local_tlsdesc_gotent (abfd)
1624 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1625 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1626 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1627 }
1628 local_got_refcounts[r_symndx] += 1;
1629 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1630 }
1631
37e55690
JJ		 1632 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1633 tls_type |= old_tls_type;
13ae64f3
JJ		 1634 /* If a TLS symbol is accessed using IE at least once,
1635 there is no point to use dynamic model for it. */
ebcfb3c0 1636 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1637 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1638 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1639 {
67a4f2b7 1640 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1641 tls_type = old_tls_type;
67a4f2b7
AO		 1642 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1643 && GOT_TLS_GD_ANY_P (tls_type))
1644 tls_type |= old_tls_type;
13ae64f3
JJ		 1645 else
1646 {
09a24cbf 1647 if (h)
4c544807
L		 1648 name = h->root.root.string;
1649 else
1650 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1651 NULL);
13ae64f3 1652 (*_bfd_error_handler)
d003868e 1653 (_("%B: `%s' accessed both as normal and "
55fd94b0 1654 "thread local symbol"),
4c544807 1655 abfd, name);
68c4a57e 1656 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1657 return FALSE;
13ae64f3
JJ		 1658 }
1659 }
1660
1661 if (old_tls_type != tls_type)
1662 {
1663 if (h != NULL)
1664 elf_i386_hash_entry (h)->tls_type = tls_type;
1665 else
1666 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1667 }
1668 }
0ac8d2ca
AM		 1669 /* Fall through */
1670
1671 case R_386_GOTOFF:
1672 case R_386_GOTPC:
13ae64f3 1673 create_got:
6de2ae4a 1674 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 1675 {
1676 if (htab->elf.dynobj == NULL)
1677 htab->elf.dynobj = abfd;
6de2ae4a 1678 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1679 return FALSE;
0ac8d2ca 1680 }
37e55690
JJ		 1681 if (r_type != R_386_TLS_IE)
1682 break;
1683 /* Fall through */
252b5132 1684
37e55690
JJ		 1685 case R_386_TLS_LE_32:
1686 case R_386_TLS_LE:
1d85728f 1687 if (info->executable)
37e55690 1688 break;
bffbf940 1689 info->flags |= DF_STATIC_TLS;
b34976b6 1690 /* Fall through */
252b5132
RH		 1691
1692 case R_386_32:
1693 case R_386_PC32:
710ab287 1694 if (h != NULL && info->executable)
6725bdbf 1695 {
12d0ee4a 1696 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1697 need a copy reloc. We can't check reliably at this
1698 stage whether the section is read-only, as input
1699 sections have not yet been mapped to output sections.
1700 Tentatively set the flag for now, and correct in
1701 adjust_dynamic_symbol. */
f5385ebf 1702 h->non_got_ref = 1;
12d0ee4a
AM		 1703
1704 /* We may need a .plt entry if the function this reloc
1705 refers to is in a shared lib. */
51b64d56 1706 h->plt.refcount += 1;
c6585bbb 1707 if (r_type != R_386_PC32)
f5385ebf 1708 h->pointer_equality_needed = 1;
6725bdbf 1709 }
7843f00e 1710
06a6a421 1711 size_reloc = FALSE;
6a3e1bae 1712do_size:
252b5132 1713 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1714 against a global symbol, or a non PC relative reloc
1715 against a local symbol, then we need to copy the reloc
1716 into the shared library. However, if we are linking with
1717 -Bsymbolic, we do not need to copy a reloc against a
1718 global symbol which is defined in an object we are
1719 including in the link (i.e., DEF_REGULAR is set). At
1720 this point we have not seen all the input files, so it is
1721 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1722 later (it is never cleared). In case of a weak definition,
1723 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1724 a shared library. We account for that possibility below by
1f655a09
L		 1725 storing information in the relocs_copied field of the hash
1726 table entry. A similar situation occurs when creating
1727 shared libraries and symbol visibility changes render the
12d0ee4a 1728 symbol local.
56882138 1729
12d0ee4a
AM		 1730 If on the other hand, we are creating an executable, we
1731 may need to keep relocations for symbols satisfied by a
1732 dynamic library if we manage to avoid copy relocs for the
1733 symbol. */
1734 if ((info->shared
1735 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1736 && (r_type != R_386_PC32
12d0ee4a 1737 || (h != NULL
55255dae 1738 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1739 || h->root.type == bfd_link_hash_defweak
f5385ebf 1740 || !h->def_regular))))
a23b6845
AM		 1741 || (ELIMINATE_COPY_RELOCS
1742 && !info->shared
12d0ee4a
AM		 1743 && (sec->flags & SEC_ALLOC) != 0
1744 && h != NULL
12d0ee4a 1745 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1746 || !h->def_regular)))
252b5132 1747 {
e03a8ed8
L		 1748 struct elf_dyn_relocs *p;
1749 struct elf_dyn_relocs **head;
ec338859 1750
12d0ee4a
AM		 1751 /* We must copy these reloc types into the output file.
1752 Create a reloc section in dynobj and make room for
1753 this reloc. */
252b5132
RH		 1754 if (sreloc == NULL)
1755 {
0ac8d2ca
AM		 1756 if (htab->elf.dynobj == NULL)
1757 htab->elf.dynobj = abfd;
1758
83bac4b0
NC		 1759 sreloc = _bfd_elf_make_dynamic_reloc_section
1760 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1761
252b5132 1762 if (sreloc == NULL)
c2e61a4e 1763 return FALSE;
252b5132
RH		 1764 }
1765
0c715baa
AM		 1766 /* If this is a global symbol, we count the number of
1767 relocations we need for this symbol. */
1768 if (h != NULL)
252b5132 1769 {
ec338859 1770 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
0c715baa
AM		 1771 }
1772 else
1773 {
ec338859
AM		 1774 /* Track dynamic relocs needed for local syms too.
1775 We really need local syms available to do this
1776 easily. Oh well. */
87d72d41 1777 void **vpp;
ec338859 1778 asection *s;
87d72d41
AM		 1779
1780 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1781 abfd, r_symndx);
1782 if (isym == NULL)
1783 return FALSE;
1784
1785 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1786 if (s == NULL)
87d72d41 1787 s = sec;
ec338859 1788
e81d3500 1789 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1790 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1791 }
1792
1793 p = *head;
1794 if (p == NULL || p->sec != sec)
1795 {
1796 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1797 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1798 amt);
ec338859 1799 if (p == NULL)
c2e61a4e 1800 return FALSE;
ec338859
AM		 1801 p->next = *head;
1802 *head = p;
1803 p->sec = sec;
1804 p->count = 0;
1805 p->pc_count = 0;
252b5132 1806 }
ec338859
AM		 1807
1808 p->count += 1;
06a6a421
L		 1809 /* Count size relocation as PC-relative relocation. */
1810 if (r_type == R_386_PC32 || size_reloc)
ec338859 1811 p->pc_count += 1;
252b5132 1812 }
252b5132
RH		 1813 break;
1814
1815 /* This relocation describes the C++ object vtable hierarchy.
1816 Reconstruct it for later use during GC. */
1817 case R_386_GNU_VTINHERIT:
d17e0c6e 1818 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1819 return FALSE;
252b5132
RH		 1820 break;
1821
1822 /* This relocation describes which C++ vtable entries are actually
1823 used. Record for later use during GC. */
1824 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1825 BFD_ASSERT (h != NULL);
1826 if (h != NULL
1827 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c2e61a4e 1828 return FALSE;
252b5132
RH		 1829 break;
1830
1831 default:
1832 break;
1833 }
1834 }
1835
b34976b6 1836 return TRUE;
252b5132
RH		 1837}
1838
1839/* Return the section that should be marked against GC for a given
1840 relocation. */
1841
1842static asection *
55fd94b0 1843elf_i386_gc_mark_hook (asection *sec,
07adf181 1844 struct bfd_link_info *info,
55fd94b0
AM		 1845 Elf_Internal_Rela *rel,
1846 struct elf_link_hash_entry *h,
1847 Elf_Internal_Sym *sym)
252b5132
RH		 1848{
1849 if (h != NULL)
07adf181
AM		 1850 switch (ELF32_R_TYPE (rel->r_info))
1851 {
1852 case R_386_GNU_VTINHERIT:
1853 case R_386_GNU_VTENTRY:
1854 return NULL;
1855 }
1856
1857 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1858}
1859
1860/* Update the got entry reference counts for the section being removed. */
1861
b34976b6 1862static bfd_boolean
55fd94b0
AM		 1863elf_i386_gc_sweep_hook (bfd *abfd,
1864 struct bfd_link_info *info,
1865 asection *sec,
1866 const Elf_Internal_Rela *relocs)
252b5132 1867{
4dfe6ac6 1868 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 1869 Elf_Internal_Shdr *symtab_hdr;
1870 struct elf_link_hash_entry **sym_hashes;
1871 bfd_signed_vma *local_got_refcounts;
1872 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1873
7dda2462
TG		 1874 if (info->relocatable)
1875 return TRUE;
1876
4dfe6ac6
NC		 1877 htab = elf_i386_hash_table (info);
1878 if (htab == NULL)
1879 return FALSE;
1880
ec338859 1881 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1882
0ffa91dd 1883 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 1884 sym_hashes = elf_sym_hashes (abfd);
1885 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1886
1887 relend = relocs + sec->reloc_count;
1888 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1889 {
1890 unsigned long r_symndx;
1891 unsigned int r_type;
1892 struct elf_link_hash_entry *h = NULL;
37e55690 1893
26e41594
AM		 1894 r_symndx = ELF32_R_SYM (rel->r_info);
1895 if (r_symndx >= symtab_hdr->sh_info)
1896 {
26e41594 1897 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1898 while (h->root.type == bfd_link_hash_indirect
1899 || h->root.type == bfd_link_hash_warning)
1900 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1901 }
bb1cb422
L		 1902 else
1903 {
1904 /* A local symbol. */
1905 Elf_Internal_Sym *isym;
1906
1907 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1908 abfd, r_symndx);
1909
1910 /* Check relocation against local STT_GNU_IFUNC symbol. */
1911 if (isym != NULL
1912 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1913 {
1914 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
1915 if (h == NULL)
1916 abort ();
1917 }
1918 }
0c715baa 1919
3db2e7dd
L		 1920 if (h)
1921 {
1922 struct elf_i386_link_hash_entry *eh;
1923 struct elf_dyn_relocs **pp;
1924 struct elf_dyn_relocs *p;
1925
1926 eh = (struct elf_i386_link_hash_entry *) h;
1927 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1928 if (p->sec == sec)
1929 {
1930 /* Everything must go for SEC. */
1931 *pp = p->next;
1932 break;
1933 }
1934 }
1935
26e41594 1936 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 1937 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1938 symtab_hdr, sym_hashes,
1939 &r_type, GOT_UNKNOWN,
23209a78 1940 rel, relend, h, r_symndx))
142411ca
L		 1941 return FALSE;
1942
26e41594
AM		 1943 switch (r_type)
1944 {
1945 case R_386_TLS_LDM:
4dfe6ac6
NC		 1946 if (htab->tls_ldm_got.refcount > 0)
1947 htab->tls_ldm_got.refcount -= 1;
26e41594 1948 break;
0c715baa 1949
26e41594 1950 case R_386_TLS_GD:
67a4f2b7
AO		 1951 case R_386_TLS_GOTDESC:
1952 case R_386_TLS_DESC_CALL:
26e41594
AM		 1953 case R_386_TLS_IE_32:
1954 case R_386_TLS_IE:
1955 case R_386_TLS_GOTIE:
1956 case R_386_GOT32:
1957 if (h != NULL)
1958 {
1959 if (h->got.refcount > 0)
1960 h->got.refcount -= 1;
bb1cb422
L		 1961 if (h->type == STT_GNU_IFUNC)
1962 {
1963 if (h->plt.refcount > 0)
1964 h->plt.refcount -= 1;
1965 }
26e41594
AM		 1966 }
1967 else if (local_got_refcounts != NULL)
1968 {
1969 if (local_got_refcounts[r_symndx] > 0)
1970 local_got_refcounts[r_symndx] -= 1;
1971 }
1972 break;
0c715baa 1973
26e41594
AM		 1974 case R_386_32:
1975 case R_386_PC32:
1788fc08 1976 case R_386_SIZE32:
3db2e7dd
L		 1977 if (info->shared
1978 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM		 1979 break;
1980 /* Fall through */
6725bdbf 1981
26e41594
AM		 1982 case R_386_PLT32:
1983 if (h != NULL)
1984 {
1985 if (h->plt.refcount > 0)
1986 h->plt.refcount -= 1;
1987 }
1988 break;
dd5724d5 1989
bb1cb422
L		 1990 case R_386_GOTOFF:
1991 if (h != NULL && h->type == STT_GNU_IFUNC)
1992 {
1993 if (h->got.refcount > 0)
1994 h->got.refcount -= 1;
1995 if (h->plt.refcount > 0)
1996 h->plt.refcount -= 1;
1997 }
1998 break;
1999
26e41594
AM		 2000 default:
2001 break;
2002 }
2003 }
252b5132 2004
b34976b6 2005 return TRUE;
252b5132
RH		 2006}
2007
2008/* Adjust a symbol defined by a dynamic object and referenced by a
2009 regular object. The current definition is in some section of the
2010 dynamic object, but we're not including those sections. We have to
2011 change the definition to something the rest of the link can
2012 understand. */
2013
b34976b6 2014static bfd_boolean
55fd94b0
AM		 2015elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2016 struct elf_link_hash_entry *h)
252b5132 2017{
6725bdbf 2018 struct elf_i386_link_hash_table *htab;
252b5132 2019 asection *s;
5ca5bb35
L		 2020 struct elf_i386_link_hash_entry *eh;
2021 struct elf_dyn_relocs *p;
252b5132 2022
cbe950e9
L		 2023 /* STT_GNU_IFUNC symbol must go through PLT. */
2024 if (h->type == STT_GNU_IFUNC)
2025 {
73bcf233
L		 2026 /* All local STT_GNU_IFUNC references must be treate as local
2027 calls via local PLT. */
5ca5bb35
L		 2028 if (h->ref_regular
2029 && SYMBOL_CALLS_LOCAL (info, h))
2030 {
73bcf233 2031 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2032 struct elf_dyn_relocs **pp;
2033
2034 eh = (struct elf_i386_link_hash_entry *) h;
2035 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2036 {
2037 pc_count += p->pc_count;
2038 p->count -= p->pc_count;
2039 p->pc_count = 0;
73bcf233 2040 count += p->count;
5ca5bb35
L		 2041 if (p->count == 0)
2042 *pp = p->next;
2043 else
2044 pp = &p->next;
2045 }
2046
73bcf233 2047 if (pc_count || count)
5ca5bb35
L		 2048 {
2049 h->needs_plt = 1;
5ca5bb35 2050 h->non_got_ref = 1;
a5479e5f
L		 2051 if (h->plt.refcount <= 0)
2052 h->plt.refcount = 1;
2053 else
2054 h->plt.refcount += 1;
5ca5bb35
L		 2055 }
2056 }
2057
cbe950e9
L		 2058 if (h->plt.refcount <= 0)
2059 {
2060 h->plt.offset = (bfd_vma) -1;
2061 h->needs_plt = 0;
2062 }
2063 return TRUE;
2064 }
2065
252b5132
RH		 2066 /* If this is a function, put it in the procedure linkage table. We
2067 will fill in the contents of the procedure linkage table later,
2068 when we know the address of the .got section. */
2069 if (h->type == STT_FUNC
f5385ebf 2070 || h->needs_plt)
252b5132 2071 {
6725bdbf 2072 if (h->plt.refcount <= 0
9c7a29a3
AM		 2073 || SYMBOL_CALLS_LOCAL (info, h)
2074 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2075 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2076 {
2077 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2078 file, but the symbol was never referred to by a dynamic
2079 object, or if all references were garbage collected. In
2080 such a case, we don't actually need to build a procedure
2081 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2082 h->plt.offset = (bfd_vma) -1;
f5385ebf 2083 h->needs_plt = 0;
252b5132
RH		 2084 }
2085
b34976b6 2086 return TRUE;
252b5132 2087 }
6725bdbf
AM		 2088 else
2089 /* It's possible that we incorrectly decided a .plt reloc was
2090 needed for an R_386_PC32 reloc to a non-function sym in
2091 check_relocs. We can't decide accurately between function and
2092 non-function syms in check-relocs; Objects loaded later in
2093 the link may change h->type. So fix it now. */
bbd7ec4a 2094 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2095
2096 /* If this is a weak symbol, and there is a real definition, the
2097 processor independent code will have arranged for us to see the
2098 real definition first, and we can just use the same value. */
f6e332e6 2099 if (h->u.weakdef != NULL)
252b5132 2100 {
f6e332e6
AM		 2101 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2102 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2103 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2104 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2105 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2106 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2107 return TRUE;
252b5132
RH		 2108 }
2109
2110 /* This is a reference to a symbol defined by a dynamic object which
2111 is not a function. */
2112
2113 /* If we are creating a shared library, we must presume that the
2114 only references to the symbol are via the global offset table.
2115 For such cases we need not do anything here; the relocations will
2116 be handled correctly by relocate_section. */
2117 if (info->shared)
b34976b6 2118 return TRUE;
252b5132 2119
7843f00e
ILT		 2120 /* If there are no references to this symbol that do not use the
2121 GOT, we don't need to generate a copy reloc. */
f5385ebf 2122 if (!h->non_got_ref)
b34976b6 2123 return TRUE;
7843f00e 2124
8bd621d8
AM		 2125 /* If -z nocopyreloc was given, we won't generate them either. */
2126 if (info->nocopyreloc)
2127 {
f5385ebf 2128 h->non_got_ref = 0;
b34976b6 2129 return TRUE;
8bd621d8
AM		 2130 }
2131
643796e3 2132 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2133 if (htab == NULL)
2134 return FALSE;
643796e3
DJ		 2135
2136 /* If there aren't any dynamic relocs in read-only sections, then
2137 we can keep the dynamic relocs and avoid the copy reloc. This
2138 doesn't work on VxWorks, where we can not have dynamic relocations
2139 (other than copy and jump slot relocations) in an executable. */
23209a78
RM		 2140 if (ELIMINATE_COPY_RELOCS
2141 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2142 {
a23b6845
AM		 2143 eh = (struct elf_i386_link_hash_entry *) h;
2144 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2145 {
2146 s = p->sec->output_section;
2147 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2148 break;
2149 }
2150
a23b6845
AM		 2151 if (p == NULL)
2152 {
f5385ebf 2153 h->non_got_ref = 0;
a23b6845
AM		 2154 return TRUE;
2155 }
ebe50bae
AM		 2156 }
2157
252b5132
RH		 2158 /* We must allocate the symbol in our .dynbss section, which will
2159 become part of the .bss section of the executable. There will be
2160 an entry for this symbol in the .dynsym section. The dynamic
2161 object will contain position independent code, so all references
2162 from the dynamic object to this symbol will go through the global
2163 offset table. The dynamic linker will use the .dynsym entry to
2164 determine the address it must put in the global offset table, so
2165 both the dynamic object and the regular object will refer to the
2166 same memory location for the variable. */
2167
252b5132
RH		 2168 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2169 copy the initial value out of the dynamic object and into the
0ac8d2ca 2170 runtime process image. */
1d7e9d18 2171 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2172 {
eea6121a 2173 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2174 h->needs_copy = 1;
252b5132
RH		 2175 }
2176
0ac8d2ca 2177 s = htab->sdynbss;
252b5132 2178
027297b7 2179 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH		 2180}
2181
6725bdbf 2182/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2183 dynamic relocs. */
6725bdbf 2184
b34976b6 2185static bfd_boolean
eb4ff4d6 2186elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2187{
2188 struct bfd_link_info *info;
2189 struct elf_i386_link_hash_table *htab;
5a15f56f 2190 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2191 struct elf_dyn_relocs *p;
25e762b9 2192 unsigned plt_entry_size;
6725bdbf 2193
e92d460e 2194 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2195 return TRUE;
6725bdbf 2196
cbe950e9 2197 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2198
6725bdbf
AM		 2199 info = (struct bfd_link_info *) inf;
2200 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2201 if (htab == NULL)
2202 return FALSE;
6725bdbf 2203
25e762b9
RM		 2204 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2205
cbe950e9
L		 2206 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2207 here if it is defined and referenced in a non-shared object. */
2208 if (h->type == STT_GNU_IFUNC
2209 && h->def_regular)
25e762b9
RM		 2210 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
2211 plt_entry_size, 4);
cbe950e9
L		 2212 else if (htab->elf.dynamic_sections_created
2213 && h->plt.refcount > 0)
6725bdbf 2214 {
5a15f56f
AM		 2215 /* Make sure this symbol is output as a dynamic symbol.
2216 Undefined weak syms won't yet be marked as dynamic. */
2217 if (h->dynindx == -1
f5385ebf 2218 && !h->forced_local)
5a15f56f 2219 {
c152c796 2220 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2221 return FALSE;
5a15f56f
AM		 2222 }
2223
4e795f50
AM		 2224 if (info->shared
2225 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2226 {
6de2ae4a 2227 asection *s = htab->elf.splt;
6725bdbf 2228
ced53ee5
AM		 2229 /* If this is the first .plt entry, make room for the special
2230 first entry. */
eea6121a 2231 if (s->size == 0)
25e762b9 2232 s->size += plt_entry_size;
6725bdbf 2233
eea6121a 2234 h->plt.offset = s->size;
6725bdbf 2235
ced53ee5
AM		 2236 /* If this symbol is not defined in a regular file, and we are
2237 not generating a shared library, then set the symbol to this
2238 location in the .plt. This is required to make function
2239 pointers compare as equal between the normal executable and
2240 the shared library. */
2241 if (! info->shared
f5385ebf 2242 && !h->def_regular)
ced53ee5
AM		 2243 {
2244 h->root.u.def.section = s;
2245 h->root.u.def.value = h->plt.offset;
2246 }
6725bdbf 2247
ced53ee5 2248 /* Make room for this entry. */
25e762b9 2249 s->size += plt_entry_size;
6725bdbf 2250
ced53ee5
AM		 2251 /* We also need to make an entry in the .got.plt section, which
2252 will be placed in the .got section by the linker script. */
6de2ae4a 2253 htab->elf.sgotplt->size += 4;
6725bdbf 2254
6725bdbf 2255 /* We also need to make an entry in the .rel.plt section. */
6de2ae4a 2256 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
e1f98742 2257 htab->elf.srelplt->reloc_count++;
eac338cf 2258
23209a78
RM		 2259 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
2260 && !info->shared)
eac338cf
PB		 2261 {
2262 /* VxWorks has a second set of relocations for each PLT entry
2263 in executables. They go in a separate relocation section,
2264 which is processed by the kernel loader. */
2265
2266 /* There are two relocations for the initial PLT entry: an
2267 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2268 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2269
25e762b9 2270 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2271 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2272
2273 /* There are two extra relocations for each subsequent PLT entry:
2274 an R_386_32 relocation for the GOT entry, and an R_386_32
2275 relocation for the PLT entry. */
2276
2277 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2278 }
6725bdbf 2279 }
ced53ee5
AM		 2280 else
2281 {
51b64d56 2282 h->plt.offset = (bfd_vma) -1;
f5385ebf 2283 h->needs_plt = 0;
ced53ee5 2284 }
6725bdbf
AM		 2285 }
2286 else
2287 {
51b64d56 2288 h->plt.offset = (bfd_vma) -1;
f5385ebf 2289 h->needs_plt = 0;
6725bdbf
AM		 2290 }
2291
67a4f2b7
AO		 2292 eh->tlsdesc_got = (bfd_vma) -1;
2293
37e55690 2294 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2295 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2296 if (h->got.refcount > 0
1d85728f 2297 && info->executable
13ae64f3 2298 && h->dynindx == -1
37e55690 2299 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2300 h->got.offset = (bfd_vma) -1;
13ae64f3 2301 else if (h->got.refcount > 0)
6725bdbf 2302 {
0ac8d2ca 2303 asection *s;
b34976b6 2304 bfd_boolean dyn;
13ae64f3 2305 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2306
5a15f56f
AM		 2307 /* Make sure this symbol is output as a dynamic symbol.
2308 Undefined weak syms won't yet be marked as dynamic. */
2309 if (h->dynindx == -1
f5385ebf 2310 && !h->forced_local)
5a15f56f 2311 {
c152c796 2312 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2313 return FALSE;
5a15f56f
AM		 2314 }
2315
6de2ae4a 2316 s = htab->elf.sgot;
67a4f2b7
AO		 2317 if (GOT_TLS_GDESC_P (tls_type))
2318 {
6de2ae4a 2319 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2320 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2321 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2322 h->got.offset = (bfd_vma) -2;
2323 }
2324 if (! GOT_TLS_GDESC_P (tls_type)
2325 || GOT_TLS_GD_P (tls_type))
2326 {
2327 h->got.offset = s->size;
2328 s->size += 4;
2329 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2330 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2331 s->size += 4;
2332 }
ebe50bae 2333 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2334 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2335 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2336 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2337 need two), R_386_TLS_GD needs one if local symbol and two if
2338 global. */
2339 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2340 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2341 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2342 || (tls_type & GOT_TLS_IE))
6de2ae4a 2343 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2344 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2345 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2346 else if (! GOT_TLS_GDESC_P (tls_type)
2347 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2348 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 2349 && (info->shared
2350 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2351 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2352 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2353 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2354 }
2355 else
51b64d56 2356 h->got.offset = (bfd_vma) -1;
6725bdbf 2357
5a15f56f 2358 if (eh->dyn_relocs == NULL)
b34976b6 2359 return TRUE;
5a15f56f 2360
0c715baa
AM		 2361 /* In the shared -Bsymbolic case, discard space allocated for
2362 dynamic pc-relative relocs against symbols which turn out to be
2363 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2364 space for pc-relative relocs that have become local due to symbol
2365 visibility changes. */
0c715baa
AM		 2366
2367 if (info->shared)
5a15f56f 2368 {
09695f56
AM		 2369 /* The only reloc that uses pc_count is R_386_PC32, which will
2370 appear on a call or on something like ".long foo - .". We
2371 want calls to protected symbols to resolve directly to the
2372 function rather than going via the plt. If people want
2373 function pointer comparisons to work as expected then they
2374 should avoid writing assembly like ".long foo - .". */
2375 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2376 {
e03a8ed8 2377 struct elf_dyn_relocs **pp;
0c715baa
AM		 2378
2379 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2380 {
2381 p->count -= p->pc_count;
2382 p->pc_count = 0;
2383 if (p->count == 0)
2384 *pp = p->next;
2385 else
2386 pp = &p->next;
2387 }
5a15f56f 2388 }
4e795f50 2389
23209a78 2390 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2391 {
e03a8ed8 2392 struct elf_dyn_relocs **pp;
3348747a
NS		 2393 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2394 {
2395 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2396 *pp = p->next;
2397 else
2398 pp = &p->next;
2399 }
2400 }
2401
4e795f50 2402 /* Also discard relocs on undefined weak syms with non-default
3348747a 2403 visibility. */
22d606e9 2404 if (eh->dyn_relocs != NULL
4e795f50 2405 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2406 {
2407 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2408 eh->dyn_relocs = NULL;
2409
2410 /* Make sure undefined weak symbols are output as a dynamic
2411 symbol in PIEs. */
2412 else if (h->dynindx == -1
2413 && !h->forced_local)
2414 {
2415 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2416 return FALSE;
2417 }
2418 }
0c715baa 2419 }
a23b6845 2420 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2421 {
2422 /* For the non-shared case, discard space for relocs against
2423 symbols which turn out to need copy relocs or are not
2424 dynamic. */
2425
f5385ebf
AM		 2426 if (!h->non_got_ref
2427 && ((h->def_dynamic
2428 && !h->def_regular)
ebe50bae 2429 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2430 && (h->root.type == bfd_link_hash_undefweak
2431 || h->root.type == bfd_link_hash_undefined))))
2432 {
2433 /* Make sure this symbol is output as a dynamic symbol.
2434 Undefined weak syms won't yet be marked as dynamic. */
2435 if (h->dynindx == -1
f5385ebf 2436 && !h->forced_local)
0c715baa 2437 {
c152c796 2438 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2439 return FALSE;
0c715baa 2440 }
5a15f56f 2441
0c715baa
AM		 2442 /* If that succeeded, we know we'll be keeping all the
2443 relocs. */
2444 if (h->dynindx != -1)
2445 goto keep;
2446 }
2447
2448 eh->dyn_relocs = NULL;
2449
ec338859 2450 keep: ;
5a15f56f
AM		 2451 }
2452
0c715baa
AM		 2453 /* Finally, allocate space. */
2454 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2455 {
e7c33416
NC		 2456 asection *sreloc;
2457
cbe950e9 2458 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2459
2460 BFD_ASSERT (sreloc != NULL);
eea6121a 2461 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2462 }
2463
b34976b6 2464 return TRUE;
6725bdbf
AM		 2465}
2466
c25bc9fc
L		 2467/* Allocate space in .plt, .got and associated reloc sections for
2468 local dynamic relocs. */
2469
2470static bfd_boolean
2471elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2472{
2473 struct elf_link_hash_entry *h
2474 = (struct elf_link_hash_entry *) *slot;
2475
2476 if (h->type != STT_GNU_IFUNC
2477 || !h->def_regular
2478 || !h->ref_regular
2479 || !h->forced_local
2480 || h->root.type != bfd_link_hash_defined)
2481 abort ();
2482
2483 return elf_i386_allocate_dynrelocs (h, inf);
2484}
2485
0c715baa
AM		 2486/* Find any dynamic relocs that apply to read-only sections. */
2487
b34976b6 2488static bfd_boolean
eb4ff4d6 2489elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2490{
2491 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2492 struct elf_dyn_relocs *p;
0c715baa 2493
aa715242
L		 2494 /* Skip local IFUNC symbols. */
2495 if (h->forced_local && h->type == STT_GNU_IFUNC)
2496 return TRUE;
2497
0c715baa
AM		 2498 eh = (struct elf_i386_link_hash_entry *) h;
2499 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2500 {
2501 asection *s = p->sec->output_section;
2502
2503 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2504 {
2505 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2506
2507 info->flags |= DF_TEXTREL;
2508
b70321a2
L		 2509 if (info->warn_shared_textrel && info->shared)
2510 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
2511 p->sec->owner, h->root.root.string,
2512 p->sec);
2513
0c715baa 2514 /* Not an error, just cut short the traversal. */
b34976b6 2515 return FALSE;
0c715baa
AM		 2516 }
2517 }
b34976b6 2518 return TRUE;
0c715baa
AM		 2519}
2520
daa67607
L		 2521/* Convert
2522 mov foo@GOT(%reg), %reg
2523 to
2524 lea foo@GOTOFF(%reg), %reg
2525 with the local symbol, foo. */
2526
2527static bfd_boolean
2528elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
2529 struct bfd_link_info *link_info)
2530{
2531 Elf_Internal_Shdr *symtab_hdr;
2532 Elf_Internal_Rela *internal_relocs;
2533 Elf_Internal_Rela *irel, *irelend;
2534 bfd_byte *contents;
2535 struct elf_i386_link_hash_table *htab;
2536 bfd_boolean changed_contents;
2537 bfd_boolean changed_relocs;
2538 bfd_signed_vma *local_got_refcounts;
2539
2540 /* Don't even try to convert non-ELF outputs. */
2541 if (!is_elf_hash_table (link_info->hash))
2542 return FALSE;
2543
fbdc86d9 2544 /* Nothing to do if there are no codes, no relocations or no output. */
daa67607 2545 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
fbdc86d9
L		 2546 || sec->reloc_count == 0
2547 || discarded_section (sec))
daa67607
L		 2548 return TRUE;
2549
2550 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2551
2552 /* Load the relocations for this section. */
2553 internal_relocs = (_bfd_elf_link_read_relocs
2554 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2555 link_info->keep_memory));
2556 if (internal_relocs == NULL)
2557 return FALSE;
2558
2559 htab = elf_i386_hash_table (link_info);
2560 changed_contents = FALSE;
2561 changed_relocs = FALSE;
2562 local_got_refcounts = elf_local_got_refcounts (abfd);
2563
2564 /* Get the section contents. */
2565 if (elf_section_data (sec)->this_hdr.contents != NULL)
2566 contents = elf_section_data (sec)->this_hdr.contents;
2567 else
2568 {
2569 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2570 goto error_return;
2571 }
2572
2573 irelend = internal_relocs + sec->reloc_count;
2574 for (irel = internal_relocs; irel < irelend; irel++)
2575 {
2576 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2577 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2578 unsigned int indx;
2579 struct elf_link_hash_entry *h;
2580
2581 if (r_type != R_386_GOT32)
2582 continue;
2583
2584 /* Get the symbol referred to by the reloc. */
2585 if (r_symndx < symtab_hdr->sh_info)
2586 {
2587 Elf_Internal_Sym *isym;
2588
2589 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2590 abfd, r_symndx);
2591
2592 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2593 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
2594 && bfd_get_8 (input_bfd,
2595 contents + irel->r_offset - 2) == 0x8b)
2596 {
2597 bfd_put_8 (output_bfd, 0x8d,
2598 contents + irel->r_offset - 2);
2599 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2600 if (local_got_refcounts != NULL
2601 && local_got_refcounts[r_symndx] > 0)
2602 local_got_refcounts[r_symndx] -= 1;
2603 changed_contents = TRUE;
2604 changed_relocs = TRUE;
2605 }
2606 continue;
2607 }
2608
2609 indx = r_symndx - symtab_hdr->sh_info;
2610 h = elf_sym_hashes (abfd)[indx];
2611 BFD_ASSERT (h != NULL);
2612
2613 while (h->root.type == bfd_link_hash_indirect
2614 || h->root.type == bfd_link_hash_warning)
2615 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2616
3f65f599
L		 2617 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
2618 optimizing _DYNAMIC since ld.so may use its link-time address. */
daa67607
L		 2619 if (h->def_regular
2620 && h->type != STT_GNU_IFUNC
9637f6ef 2621 && h != htab->elf.hdynamic
daa67607
L		 2622 && SYMBOL_REFERENCES_LOCAL (link_info, h)
2623 && bfd_get_8 (input_bfd,
2624 contents + irel->r_offset - 2) == 0x8b)
2625 {
2626 bfd_put_8 (output_bfd, 0x8d,
2627 contents + irel->r_offset - 2);
2628 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2629 if (h->got.refcount > 0)
2630 h->got.refcount -= 1;
2631 changed_contents = TRUE;
2632 changed_relocs = TRUE;
2633 }
2634 }
2635
2636 if (contents != NULL
2637 && elf_section_data (sec)->this_hdr.contents != contents)
2638 {
2639 if (!changed_contents && !link_info->keep_memory)
2640 free (contents);
2641 else
2642 {
2643 /* Cache the section contents for elf_link_input_bfd. */
2644 elf_section_data (sec)->this_hdr.contents = contents;
2645 }
2646 }
2647
2648 if (elf_section_data (sec)->relocs != internal_relocs)
2649 {
2650 if (!changed_relocs)
2651 free (internal_relocs);
2652 else
2653 elf_section_data (sec)->relocs = internal_relocs;
2654 }
2655
2656 return TRUE;
2657
2658 error_return:
2659 if (contents != NULL
2660 && elf_section_data (sec)->this_hdr.contents != contents)
2661 free (contents);
2662 if (internal_relocs != NULL
2663 && elf_section_data (sec)->relocs != internal_relocs)
2664 free (internal_relocs);
2665 return FALSE;
2666}
2667
252b5132
RH		 2668/* Set the sizes of the dynamic sections. */
2669
b34976b6 2670static bfd_boolean
23209a78 2671elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2672{
6725bdbf 2673 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2674 bfd *dynobj;
2675 asection *s;
b34976b6 2676 bfd_boolean relocs;
0c715baa 2677 bfd *ibfd;
252b5132 2678
6725bdbf 2679 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2680 if (htab == NULL)
2681 return FALSE;
ebe50bae 2682 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2683 if (dynobj == NULL)
2684 abort ();
252b5132 2685
ebe50bae 2686 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2687 {
2688 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2689 if (info->executable)
252b5132 2690 {
3d4d4302 2691 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 2692 if (s == NULL)
2693 abort ();
eea6121a 2694 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2695 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2696 }
161d71a6 2697 }
6725bdbf 2698
0c715baa
AM		 2699 /* Set up .got offsets for local syms, and space for local dynamic
2700 relocs. */
2701 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 2702 {
2703 bfd_signed_vma *local_got;
2704 bfd_signed_vma *end_local_got;
13ae64f3 2705 char *local_tls_type;
67a4f2b7 2706 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2707 bfd_size_type locsymcount;
2708 Elf_Internal_Shdr *symtab_hdr;
2709 asection *srel;
6725bdbf 2710
0ffa91dd 2711 if (! is_i386_elf (ibfd))
161d71a6 2712 continue;
6725bdbf 2713
0c715baa
AM		 2714 for (s = ibfd->sections; s != NULL; s = s->next)
2715 {
e03a8ed8 2716 struct elf_dyn_relocs *p;
0c715baa 2717
daa67607
L		 2718 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2719 return FALSE;
2720
e03a8ed8 2721 for (p = ((struct elf_dyn_relocs *)
e81d3500 2722 elf_section_data (s)->local_dynrel);
ec338859
AM		 2723 p != NULL;
2724 p = p->next)
0c715baa 2725 {
ec338859
AM		 2726 if (!bfd_is_abs_section (p->sec)
2727 && bfd_is_abs_section (p->sec->output_section))
2728 {
2729 /* Input section has been discarded, either because
2730 it is a copy of a linkonce section or due to
2731 linker script /DISCARD/, so we'll be discarding
2732 the relocs too. */
2733 }
23209a78 2734 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2735 && strcmp (p->sec->output_section->name,
2736 ".tls_vars") == 0)
2737 {
2738 /* Relocations in vxworks .tls_vars sections are
2739 handled specially by the loader. */
2740 }
248866a8 2741 else if (p->count != 0)
ec338859
AM		 2742 {
2743 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2744 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2745 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2746 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2747 {
2748 info->flags |= DF_TEXTREL;
2749 if (info->warn_shared_textrel && info->shared)
2750 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
2751 p->sec->owner, p->sec);
b70321a2 2752 }
ec338859 2753 }
0c715baa
AM		 2754 }
2755 }
2756
2757 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2758 if (!local_got)
2759 continue;
6725bdbf 2760
0ffa91dd 2761 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2762 locsymcount = symtab_hdr->sh_info;
2763 end_local_got = local_got + locsymcount;
13ae64f3 2764 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2765 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2766 s = htab->elf.sgot;
2767 srel = htab->elf.srelgot;
67a4f2b7
AO		 2768 for (; local_got < end_local_got;
2769 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2770 {
67a4f2b7 2771 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2772 if (*local_got > 0)
6725bdbf 2773 {
67a4f2b7
AO		 2774 if (GOT_TLS_GDESC_P (*local_tls_type))
2775 {
6de2ae4a 2776 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2777 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2778 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2779 *local_got = (bfd_vma) -2;
2780 }
2781 if (! GOT_TLS_GDESC_P (*local_tls_type)
2782 || GOT_TLS_GD_P (*local_tls_type))
2783 {
2784 *local_got = s->size;
2785 s->size += 4;
2786 if (GOT_TLS_GD_P (*local_tls_type)
2787 || *local_tls_type == GOT_TLS_IE_BOTH)
2788 s->size += 4;
2789 }
13ae64f3 2790 if (info->shared
67a4f2b7 2791 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2792 || (*local_tls_type & GOT_TLS_IE))
2793 {
2794 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2795 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2796 else if (GOT_TLS_GD_P (*local_tls_type)
2797 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2798 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2799 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2800 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2801 }
6725bdbf 2802 }
161d71a6
L		 2803 else
2804 *local_got = (bfd_vma) -1;
6725bdbf 2805 }
252b5132 2806 }
6725bdbf 2807
13ae64f3
JJ		 2808 if (htab->tls_ldm_got.refcount > 0)
2809 {
2810 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2811 relocs. */
6de2ae4a
L		 2812 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2813 htab->elf.sgot->size += 8;
2814 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2815 }
2816 else
2817 htab->tls_ldm_got.offset = -1;
2818
0c715baa
AM		 2819 /* Allocate global sym .plt and .got entries, and space for global
2820 sym dynamic relocs. */
eb4ff4d6 2821 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2822
c25bc9fc
L		 2823 /* Allocate .plt and .got entries, and space for local symbols. */
2824 htab_traverse (htab->loc_hash_table,
2825 elf_i386_allocate_local_dynrelocs,
2826 info);
2827
67a4f2b7
AO		 2828 /* For every jump slot reserved in the sgotplt, reloc_count is
2829 incremented. However, when we reserve space for TLS descriptors,
2830 it's not incremented, so in order to compute the space reserved
2831 for them, it suffices to multiply the reloc count by the jump
e1f98742 2832 slot size.
caa0075c 2833
e1f98742
L		 2834 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2835 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2836 if (htab->elf.srelplt)
e1f98742
L		 2837 {
2838 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2839 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2840 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2841 }
2842 else if (htab->elf.irelplt)
2843 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2844
67a4f2b7 2845
a7b16ceb
L		 2846 if (htab->elf.sgotplt)
2847 {
2848 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2849 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 2850 if ((htab->elf.hgot == NULL
2851 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 2852 && (htab->elf.sgotplt->size
2853 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2854 && (htab->elf.splt == NULL
2855 || htab->elf.splt->size == 0)
2856 && (htab->elf.sgot == NULL
2857 || htab->elf.sgot->size == 0)
2858 && (htab->elf.iplt == NULL
2859 || htab->elf.iplt->size == 0)
2860 && (htab->elf.igotplt == NULL
2861 || htab->elf.igotplt->size == 0))
2862 htab->elf.sgotplt->size = 0;
2863 }
2864
9a2a56cc
AM		 2865
2866 if (htab->plt_eh_frame != NULL
2867 && htab->elf.splt != NULL
2868 && htab->elf.splt->size != 0
2869 && !bfd_is_abs_section (htab->elf.splt->output_section)
2870 && _bfd_elf_eh_frame_present (info))
2871 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
2872
5a15f56f
AM		 2873 /* We now have determined the sizes of the various dynamic sections.
2874 Allocate memory for them. */
b34976b6 2875 relocs = FALSE;
252b5132
RH		 2876 for (s = dynobj->sections; s != NULL; s = s->next)
2877 {
eac338cf
PB		 2878 bfd_boolean strip_section = TRUE;
2879
252b5132
RH		 2880 if ((s->flags & SEC_LINKER_CREATED) == 0)
2881 continue;
2882
6de2ae4a 2883 if (s == htab->elf.splt
9a2a56cc 2884 || s == htab->elf.sgot)
252b5132 2885 {
6725bdbf
AM		 2886 /* Strip this section if we don't need it; see the
2887 comment below. */
eac338cf
PB		 2888 /* We'd like to strip these sections if they aren't needed, but if
2889 we've exported dynamic symbols from them we must leave them.
2890 It's too late to tell BFD to get rid of the symbols. */
2891
7325306f 2892 if (htab->elf.hplt != NULL)
eac338cf 2893 strip_section = FALSE;
252b5132 2894 }
9a2a56cc
AM		 2895 else if (s == htab->elf.sgotplt
2896 || s == htab->elf.iplt
2897 || s == htab->elf.igotplt
2898 || s == htab->plt_eh_frame
2899 || s == htab->sdynbss)
2900 {
2901 /* Strip these too. */
2902 }
0112cd26 2903 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2904 {
6de2ae4a
L		 2905 if (s->size != 0
2906 && s != htab->elf.srelplt
2907 && s != htab->srelplt2)
b34976b6 2908 relocs = TRUE;
252b5132 2909
0ac8d2ca
AM		 2910 /* We use the reloc_count field as a counter if we need
2911 to copy relocs into the output file. */
5ae0bfb6 2912 s->reloc_count = 0;
252b5132 2913 }
6725bdbf 2914 else
252b5132
RH		 2915 {
2916 /* It's not one of our sections, so don't allocate space. */
2917 continue;
2918 }
2919
c456f082 2920 if (s->size == 0)
252b5132 2921 {
0ac8d2ca
AM		 2922 /* If we don't need this section, strip it from the
2923 output file. This is mostly to handle .rel.bss and
2924 .rel.plt. We must create both sections in
2925 create_dynamic_sections, because they must be created
2926 before the linker maps input sections to output
2927 sections. The linker does that before
2928 adjust_dynamic_symbol is called, and it is that
2929 function which decides whether anything needs to go
2930 into these sections. */
c456f082
AM		 2931 if (strip_section)
2932 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2933 continue;
2934 }
2935
c456f082
AM		 2936 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2937 continue;
2938
f69da49f
AM		 2939 /* Allocate memory for the section contents. We use bfd_zalloc
2940 here in case unused entries are not reclaimed before the
2941 section's contents are written out. This should not happen,
2942 but this way if it does, we get a R_386_NONE reloc instead
2943 of garbage. */
a50b1753 2944 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 2945 if (s->contents == NULL)
b34976b6 2946 return FALSE;
252b5132
RH		 2947 }
2948
e41b3a13 2949 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 2950 && htab->plt_eh_frame->contents != NULL)
2951 {
2952 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
2953 sizeof (elf_i386_eh_frame_plt));
2954 bfd_put_32 (dynobj, htab->elf.splt->size,
2955 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
2956 }
e41b3a13 2957
ebe50bae 2958 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2959 {
2960 /* Add some entries to the .dynamic section. We fill in the
2961 values later, in elf_i386_finish_dynamic_sections, but we
2962 must add the entries now so that we get the correct size for
2963 the .dynamic section. The DT_DEBUG entry is filled in by the
2964 dynamic linker and used by the debugger. */
dc810e39 2965#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2966 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2967
36af4a4e 2968 if (info->executable)
252b5132 2969 {
dc810e39 2970 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2971 return FALSE;
252b5132
RH		 2972 }
2973
6de2ae4a 2974 if (htab->elf.splt->size != 0)
252b5132 2975 {
dc810e39
AM		 2976 if (!add_dynamic_entry (DT_PLTGOT, 0)
2977 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2978 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2979 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2980 return FALSE;
252b5132
RH		 2981 }
2982
2983 if (relocs)
2984 {
dc810e39
AM		 2985 if (!add_dynamic_entry (DT_REL, 0)
2986 || !add_dynamic_entry (DT_RELSZ, 0)
2987 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 2988 return FALSE;
252b5132 2989
0c715baa
AM		 2990 /* If any dynamic relocs apply to a read-only section,
2991 then we need a DT_TEXTREL entry. */
248866a8 2992 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 2993 elf_link_hash_traverse (&htab->elf,
2994 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 2995
2996 if ((info->flags & DF_TEXTREL) != 0)
2997 {
2998 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2999 return FALSE;
0c715baa 3000 }
252b5132 3001 }
23209a78 3002 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3003 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3004 return FALSE;
252b5132 3005 }
dc810e39 3006#undef add_dynamic_entry
252b5132 3007
b34976b6 3008 return TRUE;
252b5132
RH		 3009}
3010
67a4f2b7
AO		 3011static bfd_boolean
3012elf_i386_always_size_sections (bfd *output_bfd,
3013 struct bfd_link_info *info)
3014{
3015 asection *tls_sec = elf_hash_table (info)->tls_sec;
3016
3017 if (tls_sec)
3018 {
3019 struct elf_link_hash_entry *tlsbase;
3020
3021 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3022 "_TLS_MODULE_BASE_",
3023 FALSE, FALSE, FALSE);
3024
3025 if (tlsbase && tlsbase->type == STT_TLS)
3026 {
4dfe6ac6 3027 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3028 struct bfd_link_hash_entry *bh = NULL;
3029 const struct elf_backend_data *bed
3030 = get_elf_backend_data (output_bfd);
3031
4dfe6ac6
NC		 3032 htab = elf_i386_hash_table (info);
3033 if (htab == NULL)
3034 return FALSE;
3035
67a4f2b7
AO		 3036 if (!(_bfd_generic_link_add_one_symbol
3037 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3038 tls_sec, 0, NULL, FALSE,
3039 bed->collect, &bh)))
3040 return FALSE;
9f03412a 3041
4dfe6ac6 3042 htab->tls_module_base = bh;
9f03412a 3043
67a4f2b7
AO		 3044 tlsbase = (struct elf_link_hash_entry *)bh;
3045 tlsbase->def_regular = 1;
3046 tlsbase->other = STV_HIDDEN;
3047 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3048 }
3049 }
3050
3051 return TRUE;
3052}
3053
38701953
AM		 3054/* Set the correct type for an x86 ELF section. We do this by the
3055 section name, which is a hack, but ought to work. */
3056
b34976b6 3057static bfd_boolean
55fd94b0
AM		 3058elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3059 Elf_Internal_Shdr *hdr,
3060 asection *sec)
38701953 3061{
91d6fa6a 3062 const char *name;
38701953
AM		 3063
3064 name = bfd_get_section_name (abfd, sec);
3065
3066 /* This is an ugly, but unfortunately necessary hack that is
3067 needed when producing EFI binaries on x86. It tells
3068 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3069 containing ELF relocation info. We need this hack in order to
3070 be able to generate ELF binaries that can be translated into
3071 EFI applications (which are essentially COFF objects). Those
3072 files contain a COFF ".reloc" section inside an ELFNN object,
3073 which would normally cause BFD to segfault because it would
3074 attempt to interpret this section as containing relocation
3075 entries for section "oc". With this hack enabled, ".reloc"
3076 will be treated as a normal data section, which will avoid the
3077 segfault. However, you won't be able to create an ELFNN binary
3078 with a section named "oc" that needs relocations, but that's
3079 the kind of ugly side-effects you get when detecting section
3080 types based on their names... In practice, this limitation is
3081 unlikely to bite. */
3082 if (strcmp (name, ".reloc") == 0)
3083 hdr->sh_type = SHT_PROGBITS;
3084
b34976b6 3085 return TRUE;
38701953
AM		 3086}
3087
9f03412a
AO		 3088/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3089 executables. Rather than setting it to the beginning of the TLS
3090 section, we have to set it to the end. This function may be called
3091 multiple times, it is idempotent. */
3092
3093static void
eb4ff4d6 3094elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3095{
4dfe6ac6 3096 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3097 struct bfd_link_hash_entry *base;
3098
3099 if (!info->executable)
3100 return;
3101
4dfe6ac6
NC		 3102 htab = elf_i386_hash_table (info);
3103 if (htab == NULL)
3104 return;
9f03412a 3105
4dfe6ac6
NC		 3106 base = htab->tls_module_base;
3107 if (base == NULL)
9f03412a
AO		 3108 return;
3109
4dfe6ac6 3110 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3111}
3112
13ae64f3
JJ		 3113/* Return the base VMA address which should be subtracted from real addresses
3114 when resolving @dtpoff relocation.
3115 This is PT_TLS segment p_vaddr. */
3116
3117static bfd_vma
eb4ff4d6 3118elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3119{
e1918d23
AM		 3120 /* If tls_sec is NULL, we should have signalled an error already. */
3121 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3122 return 0;
e1918d23 3123 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3124}
3125
3126/* Return the relocation value for @tpoff relocation
3127 if STT_TLS virtual address is ADDRESS. */
3128
3129static bfd_vma
eb4ff4d6 3130elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3131{
e1918d23 3132 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3133 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3134 bfd_vma static_tls_size;
13ae64f3 3135
e1918d23
AM		 3136 /* If tls_sec is NULL, we should have signalled an error already. */
3137 if (htab->tls_sec == NULL)
6a30718d 3138 return 0;
7dc98aea
RO		 3139
3140 /* Consider special static TLS alignment requirements. */
3141 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3142 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3143}
3144
252b5132
RH		 3145/* Relocate an i386 ELF section. */
3146
b34976b6 3147static bfd_boolean
55fd94b0
AM		 3148elf_i386_relocate_section (bfd *output_bfd,
3149 struct bfd_link_info *info,
3150 bfd *input_bfd,
3151 asection *input_section,
3152 bfd_byte *contents,
3153 Elf_Internal_Rela *relocs,
3154 Elf_Internal_Sym *local_syms,
3155 asection **local_sections)
252b5132 3156{
6725bdbf 3157 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3158 Elf_Internal_Shdr *symtab_hdr;
3159 struct elf_link_hash_entry **sym_hashes;
3160 bfd_vma *local_got_offsets;
67a4f2b7 3161 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3162 Elf_Internal_Rela *rel;
3163 Elf_Internal_Rela *relend;
3348747a 3164 bfd_boolean is_vxworks_tls;
25e762b9 3165 unsigned plt_entry_size;
252b5132 3166
0ffa91dd 3167 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3168
6725bdbf 3169 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3170 if (htab == NULL)
3171 return FALSE;
0ffa91dd 3172 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3173 sym_hashes = elf_sym_hashes (input_bfd);
3174 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3175 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3176 /* We have to handle relocations in vxworks .tls_vars sections
3177 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3178 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3179 && info->shared
3348747a
NS		 3180 && !strcmp (input_section->output_section->name,
3181 ".tls_vars"));
252b5132 3182
eb4ff4d6 3183 elf_i386_set_tls_module_base (info);
9f03412a 3184
25e762b9
RM		 3185 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3186
252b5132
RH		 3187 rel = relocs;
3188 relend = relocs + input_section->reloc_count;
3189 for (; rel < relend; rel++)
3190 {
13ae64f3 3191 unsigned int r_type;
252b5132
RH		 3192 reloc_howto_type *howto;
3193 unsigned long r_symndx;
3194 struct elf_link_hash_entry *h;
3195 Elf_Internal_Sym *sym;
3196 asection *sec;
67a4f2b7 3197 bfd_vma off, offplt;
252b5132 3198 bfd_vma relocation;
b34976b6 3199 bfd_boolean unresolved_reloc;
252b5132 3200 bfd_reloc_status_type r;
1b452ec6 3201 unsigned int indx;
13ae64f3 3202 int tls_type;
1788fc08 3203 bfd_vma st_size;
252b5132
RH		 3204
3205 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3206 if (r_type == R_386_GNU_VTINHERIT
3207 || r_type == R_386_GNU_VTENTRY)
252b5132 3208 continue;
dc47f327 3209
55fd94b0 3210 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3211 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3212 >= R_386_ext - R_386_standard)
3213 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3214 >= R_386_irelative - R_386_ext))
252b5132 3215 {
6ba842b6 3216 (*_bfd_error_handler)
d003868e
AM		 3217 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3218 input_bfd, input_section, r_type);
252b5132 3219 bfd_set_error (bfd_error_bad_value);
b34976b6 3220 return FALSE;
252b5132 3221 }
1b452ec6 3222 howto = elf_howto_table + indx;
252b5132
RH		 3223
3224 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3225 h = NULL;
3226 sym = NULL;
3227 sec = NULL;
b34976b6 3228 unresolved_reloc = FALSE;
252b5132
RH		 3229 if (r_symndx < symtab_hdr->sh_info)
3230 {
3231 sym = local_syms + r_symndx;
3232 sec = local_sections[r_symndx];
3233 relocation = (sec->output_section->vma
3234 + sec->output_offset
3235 + sym->st_value);
1788fc08 3236 st_size = sym->st_size;
ab96bf03
AM		 3237
3238 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3239 && ((sec->flags & SEC_MERGE) != 0
3240 || (info->relocatable
3241 && sec->output_offset != 0)))
f8df10f4 3242 {
f8df10f4 3243 bfd_vma addend;
4a335f3d 3244 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3245
4a335f3d 3246 switch (howto->size)
f8df10f4 3247 {
4a335f3d
AM		 3248 case 0:
3249 addend = bfd_get_8 (input_bfd, where);
3250 if (howto->pc_relative)
3251 {
3252 addend = (addend ^ 0x80) - 0x80;
3253 addend += 1;
3254 }
3255 break;
3256 case 1:
3257 addend = bfd_get_16 (input_bfd, where);
3258 if (howto->pc_relative)
3259 {
3260 addend = (addend ^ 0x8000) - 0x8000;
3261 addend += 2;
3262 }
3263 break;
3264 case 2:
3265 addend = bfd_get_32 (input_bfd, where);
3266 if (howto->pc_relative)
3267 {
3268 addend = (addend ^ 0x80000000) - 0x80000000;
3269 addend += 4;
3270 }
3271 break;
3272 default:
3273 abort ();
f8df10f4
JJ		 3274 }
3275
ab96bf03
AM		 3276 if (info->relocatable)
3277 addend += sec->output_offset;
3278 else
3279 {
3280 asection *msec = sec;
3281 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3282 addend);
3283 addend -= relocation;
3284 addend += msec->output_section->vma + msec->output_offset;
3285 }
4a335f3d
AM		 3286
3287 switch (howto->size)
3288 {
3289 case 0:
16a10388 3290 /* FIXME: overflow checks. */
4a335f3d
AM		 3291 if (howto->pc_relative)
3292 addend -= 1;
3293 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3294 break;
3295 case 1:
3296 if (howto->pc_relative)
3297 addend -= 2;
3298 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3299 break;
3300 case 2:
3301 if (howto->pc_relative)
3302 addend -= 4;
3303 bfd_put_32 (input_bfd, addend, where);
3304 break;
3305 }
f8df10f4 3306 }
1f85278f
L		 3307 else if (!info->relocatable
3308 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3309 {
3310 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3311 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3312 FALSE);
c25bc9fc
L		 3313 if (h == NULL)
3314 abort ();
3315
23209a78 3316 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3317 h->root.u.def.value = sym->st_value;
3318 h->root.u.def.section = sec;
3319 }
252b5132
RH		 3320 }
3321 else
3322 {
3d540e93 3323 bfd_boolean warned ATTRIBUTE_UNUSED;
ffb2e45b 3324
b2a8e766
AM		 3325 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3326 r_symndx, symtab_hdr, sym_hashes,
3327 h, sec, relocation,
3328 unresolved_reloc, warned);
1788fc08 3329 st_size = h->size;
252b5132
RH		 3330 }
3331
dbaa2011 3332 if (sec != NULL && discarded_section (sec))
0672748a 3333 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3334 rel, 1, relend, howto, 0, contents);
9635fe29 3335
ab96bf03
AM		 3336 if (info->relocatable)
3337 continue;
3338
cbe950e9
L		 3339 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3340 it here if it is defined in a non-shared object. */
3341 if (h != NULL
3342 && h->type == STT_GNU_IFUNC
3343 && h->def_regular)
3344 {
3345 asection *plt, *gotplt, *base_got;
3346 bfd_vma plt_index;
4c544807 3347 const char *name;
cbe950e9
L		 3348
3349 if ((input_section->flags & SEC_ALLOC) == 0
3350 || h->plt.offset == (bfd_vma) -1)
3351 abort ();
3352
3353 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3354 if (htab->elf.splt != NULL)
cbe950e9 3355 {
6de2ae4a
L		 3356 plt = htab->elf.splt;
3357 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3358 }
3359 else
3360 {
6de2ae4a
L		 3361 plt = htab->elf.iplt;
3362 gotplt = htab->elf.igotplt;
cbe950e9
L		 3363 }
3364
3365 relocation = (plt->output_section->vma
3366 + plt->output_offset + h->plt.offset);
3367
3368 switch (r_type)
3369 {
3370 default:
4c544807
L		 3371 if (h->root.root.string)
3372 name = h->root.root.string;
3373 else
3374 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3375 NULL);
cbe950e9
L		 3376 (*_bfd_error_handler)
3377 (_("%B: relocation %s against STT_GNU_IFUNC "
3378 "symbol `%s' isn't handled by %s"), input_bfd,
3379 elf_howto_table[r_type].name,
4c544807 3380 name, __FUNCTION__);
cbe950e9
L		 3381 bfd_set_error (bfd_error_bad_value);
3382 return FALSE;
3383
3384 case R_386_32:
710ab287 3385 /* Generate dynamic relcoation only when there is a
c293fa49 3386 non-GOT reference in a shared object. */
710ab287
L		 3387 if (info->shared && h->non_got_ref)
3388 {
3389 Elf_Internal_Rela outrel;
710ab287
L		 3390 asection *sreloc;
3391 bfd_vma offset;
3392
c25bc9fc
L		 3393 /* Need a dynamic relocation to get the real function
3394 adddress. */
710ab287
L		 3395 offset = _bfd_elf_section_offset (output_bfd,
3396 info,
3397 input_section,
3398 rel->r_offset);
3399 if (offset == (bfd_vma) -1
3400 || offset == (bfd_vma) -2)
3401 abort ();
3402
3403 outrel.r_offset = (input_section->output_section->vma
3404 + input_section->output_offset
3405 + offset);
3406
3407 if (h->dynindx == -1
44c4ea11
L		 3408 || h->forced_local
3409 || info->executable)
710ab287
L		 3410 {
3411 /* This symbol is resolved locally. */
56b8aada
L		 3412 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3413 bfd_put_32 (output_bfd,
3414 (h->root.u.def.value
3415 + h->root.u.def.section->output_section->vma
3416 + h->root.u.def.section->output_offset),
3417 contents + offset);
710ab287
L		 3418 }
3419 else
56b8aada 3420 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3421
6de2ae4a 3422 sreloc = htab->elf.irelifunc;
59d6ffb2 3423 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3424
3425 /* If this reloc is against an external symbol, we
3426 do not want to fiddle with the addend. Otherwise,
3427 we need to include the symbol value so that it
3428 becomes an addend for the dynamic reloc. For an
3429 internal symbol, we have updated addend. */
56b8aada 3430 continue;
710ab287 3431 }
d59a60e9 3432 /* FALLTHROUGH */
cbe950e9
L		 3433 case R_386_PC32:
3434 case R_386_PLT32:
3435 goto do_relocation;
3436
3437 case R_386_GOT32:
6de2ae4a 3438 base_got = htab->elf.sgot;
cbe950e9
L		 3439 off = h->got.offset;
3440
7afd84dc 3441 if (base_got == NULL)
cbe950e9
L		 3442 abort ();
3443
7afd84dc 3444 if (off == (bfd_vma) -1)
cbe950e9 3445 {
7afd84dc
L		 3446 /* We can't use h->got.offset here to save state, or
3447 even just remember the offset, as finish_dynamic_symbol
3448 would use that as offset into .got. */
6bbec505 3449
6de2ae4a 3450 if (htab->elf.splt != NULL)
7afd84dc 3451 {
25e762b9 3452 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3453 off = (plt_index + 3) * 4;
6de2ae4a 3454 base_got = htab->elf.sgotplt;
7afd84dc 3455 }
cbe950e9
L		 3456 else
3457 {
25e762b9 3458 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3459 off = plt_index * 4;
6de2ae4a 3460 base_got = htab->elf.igotplt;
7afd84dc
L		 3461 }
3462
3463 if (h->dynindx == -1
3464 || h->forced_local
3465 || info->symbolic)
3466 {
3467 /* This references the local defitionion. We must
3468 initialize this entry in the global offset table.
3469 Since the offset must always be a multiple of 8,
3470 we use the least significant bit to record
3471 whether we have initialized it already.
3472
3473 When doing a dynamic link, we create a .rela.got
3474 relocation entry to initialize the value. This
3475 is done in the finish_dynamic_symbol routine. */
3476 if ((off & 1) != 0)
3477 off &= ~1;
3478 else
3479 {
3480 bfd_put_32 (output_bfd, relocation,
3481 base_got->contents + off);
3482 h->got.offset |= 1;
3483 }
cbe950e9 3484 }
cbe950e9 3485
7afd84dc 3486 relocation = off;
cbe950e9 3487
7afd84dc 3488 /* Adjust for static executables. */
6de2ae4a 3489 if (htab->elf.splt == NULL)
7afd84dc
L		 3490 relocation += gotplt->output_offset;
3491 }
3492 else
0018b0a3
L		 3493 {
3494 relocation = (base_got->output_section->vma
3495 + base_got->output_offset + off
3496 - gotplt->output_section->vma
3497 - gotplt->output_offset);
3498 /* Adjust for static executables. */
6de2ae4a 3499 if (htab->elf.splt == NULL)
0018b0a3
L		 3500 relocation += gotplt->output_offset;
3501 }
3502
cbe950e9
L		 3503 goto do_relocation;
3504
3505 case R_386_GOTOFF:
3506 relocation -= (gotplt->output_section->vma
3507 + gotplt->output_offset);
3508 goto do_relocation;
3509 }
3510 }
3511
252b5132
RH		 3512 switch (r_type)
3513 {
3514 case R_386_GOT32:
3515 /* Relocation is to the entry for this symbol in the global
3516 offset table. */
6de2ae4a 3517 if (htab->elf.sgot == NULL)
ffb2e45b 3518 abort ();
252b5132
RH		 3519
3520 if (h != NULL)
3521 {
b34976b6 3522 bfd_boolean dyn;
252b5132
RH		 3523
3524 off = h->got.offset;
ebe50bae 3525 dyn = htab->elf.dynamic_sections_created;
26e41594 3526 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3527 || (info->shared
586119b3 3528 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3529 || (ELF_ST_VISIBILITY (h->other)
3530 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3531 {
3532 /* This is actually a static link, or it is a
3533 -Bsymbolic link and the symbol is defined
3534 locally, or the symbol was forced to be local
3535 because of a version file. We must initialize
3536 this entry in the global offset table. Since the
3537 offset must always be a multiple of 4, we use the
3538 least significant bit to record whether we have
3539 initialized it already.
3540
3541 When doing a dynamic link, we create a .rel.got
3542 relocation entry to initialize the value. This
3543 is done in the finish_dynamic_symbol routine. */
3544 if ((off & 1) != 0)
3545 off &= ~1;
3546 else
3547 {
3548 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3549 htab->elf.sgot->contents + off);
252b5132
RH		 3550 h->got.offset |= 1;
3551 }
3552 }
8c694914 3553 else
b34976b6 3554 unresolved_reloc = FALSE;
252b5132
RH		 3555 }
3556 else
3557 {
ffb2e45b
AM		 3558 if (local_got_offsets == NULL)
3559 abort ();
252b5132
RH		 3560
3561 off = local_got_offsets[r_symndx];
3562
3563 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3564 the least significant bit to record whether we have
3565 already generated the necessary reloc. */
252b5132
RH		 3566 if ((off & 1) != 0)
3567 off &= ~1;
3568 else
3569 {
6725bdbf 3570 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3571 htab->elf.sgot->contents + off);
252b5132
RH		 3572
3573 if (info->shared)
3574 {
947216bf
AM		 3575 asection *s;
3576 Elf_Internal_Rela outrel;
252b5132 3577
6de2ae4a 3578 s = htab->elf.srelgot;
947216bf 3579 if (s == NULL)
ffb2e45b 3580 abort ();
252b5132 3581
6de2ae4a
L		 3582 outrel.r_offset = (htab->elf.sgot->output_section->vma
3583 + htab->elf.sgot->output_offset
252b5132
RH		 3584 + off);
3585 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 3586 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 3587 }
3588
3589 local_got_offsets[r_symndx] |= 1;
3590 }
252b5132
RH		 3591 }
3592
ffb2e45b
AM		 3593 if (off >= (bfd_vma) -2)
3594 abort ();
3595
6de2ae4a
L		 3596 relocation = htab->elf.sgot->output_section->vma
3597 + htab->elf.sgot->output_offset + off
3598 - htab->elf.sgotplt->output_section->vma
3599 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3600 break;
3601
3602 case R_386_GOTOFF:
3603 /* Relocation is relative to the start of the global offset
3604 table. */
3605
90f487df
L		 3606 /* Check to make sure it isn't a protected function symbol
3607 for shared library since it may not be local when used
41bed6dd
L		 3608 as function address. We also need to make sure that a
3609 symbol is defined locally. */
3610 if (info->shared && h)
90f487df 3611 {
41bed6dd
L		 3612 if (!h->def_regular)
3613 {
3614 const char *v;
3615
3616 switch (ELF_ST_VISIBILITY (h->other))
3617 {
3618 case STV_HIDDEN:
3619 v = _("hidden symbol");
3620 break;
3621 case STV_INTERNAL:
3622 v = _("internal symbol");
3623 break;
3624 case STV_PROTECTED:
3625 v = _("protected symbol");
3626 break;
3627 default:
3628 v = _("symbol");
3629 break;
3630 }
3631
3632 (*_bfd_error_handler)
3633 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3634 input_bfd, v, h->root.root.string);
3635 bfd_set_error (bfd_error_bad_value);
3636 return FALSE;
3637 }
3638 else if (!info->executable
bdb892b9 3639 && !SYMBOLIC_BIND (info, h)
41bed6dd
L		 3640 && h->type == STT_FUNC
3641 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3642 {
3643 (*_bfd_error_handler)
3644 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3645 input_bfd, h->root.root.string);
3646 bfd_set_error (bfd_error_bad_value);
3647 return FALSE;
3648 }
90f487df
L		 3649 }
3650
8c37241b
JJ		 3651 /* Note that sgot is not involved in this
3652 calculation. We always want the start of .got.plt. If we
3653 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3654 permitted by the ABI, we might have to change this
3655 calculation. */
6de2ae4a
L		 3656 relocation -= htab->elf.sgotplt->output_section->vma
3657 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3658 break;
3659
3660 case R_386_GOTPC:
3661 /* Use global offset table as symbol value. */
6de2ae4a
L		 3662 relocation = htab->elf.sgotplt->output_section->vma
3663 + htab->elf.sgotplt->output_offset;
b34976b6 3664 unresolved_reloc = FALSE;
252b5132
RH		 3665 break;
3666
3667 case R_386_PLT32:
3668 /* Relocation is to the entry for this symbol in the
3669 procedure linkage table. */
3670
dd5724d5 3671 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3672 without using the procedure linkage table. */
252b5132
RH		 3673 if (h == NULL)
3674 break;
3675
dd5724d5 3676 if (h->plt.offset == (bfd_vma) -1
6de2ae4a 3677 || htab->elf.splt == NULL)
252b5132
RH		 3678 {
3679 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3680 happens when statically linking PIC code, or when
3681 using -Bsymbolic. */
252b5132
RH		 3682 break;
3683 }
3684
6de2ae4a
L		 3685 relocation = (htab->elf.splt->output_section->vma
3686 + htab->elf.splt->output_offset
252b5132 3687 + h->plt.offset);
b34976b6 3688 unresolved_reloc = FALSE;
252b5132
RH		 3689 break;
3690
1788fc08 3691 case R_386_SIZE32:
1788fc08
L		 3692 /* Set to symbol size. */
3693 relocation = st_size;
3694 /* Fall through. */
3695
252b5132
RH		 3696 case R_386_32:
3697 case R_386_PC32:
3348747a
NS		 3698 if ((input_section->flags & SEC_ALLOC) == 0
3699 || is_vxworks_tls)
ec338859
AM		 3700 break;
3701
12d0ee4a 3702 if ((info->shared
ef5aade5
L		 3703 && (h == NULL
3704 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3705 || h->root.type != bfd_link_hash_undefweak)
1788fc08 3706 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3707 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3708 || (ELIMINATE_COPY_RELOCS
3709 && !info->shared
12d0ee4a
AM		 3710 && h != NULL
3711 && h->dynindx != -1
f5385ebf
AM		 3712 && !h->non_got_ref
3713 && ((h->def_dynamic
3714 && !h->def_regular)
28d0b90e 3715 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3716 || h->root.type == bfd_link_hash_undefined)))
252b5132 3717 {
947216bf 3718 Elf_Internal_Rela outrel;
b34976b6 3719 bfd_boolean skip, relocate;
0c715baa 3720 asection *sreloc;
252b5132
RH		 3721
3722 /* When generating a shared object, these relocations
3723 are copied into the output file to be resolved at run
3724 time. */
3725
b34976b6
AM		 3726 skip = FALSE;
3727 relocate = FALSE;
252b5132 3728
c629eae0
JJ		 3729 outrel.r_offset =
3730 _bfd_elf_section_offset (output_bfd, info, input_section,
3731 rel->r_offset);
3732 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3733 skip = TRUE;
0bb2d96a 3734 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3735 skip = TRUE, relocate = TRUE;
252b5132
RH		 3736 outrel.r_offset += (input_section->output_section->vma
3737 + input_section->output_offset);
3738
3739 if (skip)
0bb2d96a 3740 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3741 else if (h != NULL
3742 && h->dynindx != -1
3743 && (r_type == R_386_PC32
3744 || !info->shared
55255dae 3745 || !SYMBOLIC_BIND (info, h)
f5385ebf 3746 || !h->def_regular))
0bb2d96a 3747 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3748 else
3749 {
5a15f56f 3750 /* This symbol is local, or marked to become local. */
b34976b6 3751 relocate = TRUE;
5a15f56f 3752 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3753 }
3754
cbe950e9 3755 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3756
62d78908
L		 3757 if (sreloc == NULL || sreloc->contents == NULL)
3758 {
3759 r = bfd_reloc_notsupported;
3760 goto check_relocation_error;
3761 }
0c715baa 3762
59d6ffb2 3763 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 3764
3765 /* If this reloc is against an external symbol, we do
3766 not want to fiddle with the addend. Otherwise, we
3767 need to include the symbol value so that it becomes
3768 an addend for the dynamic reloc. */
0f88be7a 3769 if (! relocate)
252b5132
RH		 3770 continue;
3771 }
252b5132
RH		 3772 break;
3773
37e55690 3774 case R_386_TLS_IE:
1d85728f 3775 if (!info->executable)
37e55690 3776 {
947216bf 3777 Elf_Internal_Rela outrel;
37e55690 3778 asection *sreloc;
37e55690
JJ		 3779
3780 outrel.r_offset = rel->r_offset
3781 + input_section->output_section->vma
3782 + input_section->output_offset;
3783 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3784 sreloc = elf_section_data (input_section)->sreloc;
3785 if (sreloc == NULL)
3786 abort ();
59d6ffb2 3787 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3788 }
3789 /* Fall through */
3790
13ae64f3 3791 case R_386_TLS_GD:
67a4f2b7
AO		 3792 case R_386_TLS_GOTDESC:
3793 case R_386_TLS_DESC_CALL:
13ae64f3 3794 case R_386_TLS_IE_32:
37e55690 3795 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3796 tls_type = GOT_UNKNOWN;
3797 if (h == NULL && local_got_offsets)
3798 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3799 else if (h != NULL)
142411ca 3800 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3801 if (tls_type == GOT_TLS_IE)
3802 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3803
3804 if (! elf_i386_tls_transition (info, input_bfd,
3805 input_section, contents,
3806 symtab_hdr, sym_hashes,
3807 &r_type, tls_type, rel,
4c544807 3808 relend, h, r_symndx))
142411ca 3809 return FALSE;
13ae64f3
JJ		 3810
3811 if (r_type == R_386_TLS_LE_32)
3812 {
82e51918 3813 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3814 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3815 {
142411ca 3816 unsigned int type;
13ae64f3
JJ		 3817 bfd_vma roff;
3818
3819 /* GD->LE transition. */
13ae64f3 3820 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3821 if (type == 0x04)
3822 {
3823 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3824 Change it into:
3825 movl %gs:0, %eax; subl $foo@tpoff, %eax
3826 (6 byte form of subl). */
13ae64f3
JJ		 3827 memcpy (contents + rel->r_offset - 3,
3828 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3829 roff = rel->r_offset + 5;
13ae64f3
JJ		 3830 }
3831 else
3832 {
142411ca
L		 3833 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3834 Change it into:
3835 movl %gs:0, %eax; subl $foo@tpoff, %eax
3836 (6 byte form of subl). */
3837 memcpy (contents + rel->r_offset - 2,
3838 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3839 roff = rel->r_offset + 6;
13ae64f3 3840 }
eb4ff4d6 3841 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3842 contents + roff);
a3fadc9a 3843 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 3844 rel++;
3845 continue;
3846 }
67a4f2b7
AO		 3847 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3848 {
3849 /* GDesc -> LE transition.
3850 It's originally something like:
3851 leal x@tlsdesc(%ebx), %eax
3852
3853 leal x@ntpoff, %eax
3854
3855 Registers other than %eax may be set up here. */
3856
142411ca 3857 unsigned int val;
67a4f2b7
AO		 3858 bfd_vma roff;
3859
67a4f2b7 3860 roff = rel->r_offset;
67a4f2b7 3861 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3862
3863 /* Now modify the instruction as appropriate. */
3864 /* aoliva FIXME: remove the above and xor the byte
3865 below with 0x86. */
3866 bfd_put_8 (output_bfd, val ^ 0x86,
3867 contents + roff - 1);
eb4ff4d6 3868 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 3869 contents + roff);
3870 continue;
3871 }
3872 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3873 {
3874 /* GDesc -> LE transition.
3875 It's originally:
3876 call *(%eax)
3877 Turn it into:
142411ca 3878 xchg %ax,%ax */
67a4f2b7 3879
67a4f2b7 3880 bfd_vma roff;
6bbec505 3881
67a4f2b7 3882 roff = rel->r_offset;
10efb593 3883 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3884 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3885 continue;
3886 }
37e55690 3887 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 3888 {
142411ca 3889 unsigned int val;
13ae64f3
JJ		 3890
3891 /* IE->LE transition:
37e55690
JJ		 3892 Originally it can be one of:
3893 movl foo, %eax
3894 movl foo, %reg
3895 addl foo, %reg
3896 We change it into:
3897 movl $foo, %eax
3898 movl $foo, %reg
3899 addl $foo, %reg. */
37e55690 3900 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 3901 if (val == 0xa1)
3902 {
3903 /* movl foo, %eax. */
55fd94b0
AM		 3904 bfd_put_8 (output_bfd, 0xb8,
3905 contents + rel->r_offset - 1);
37e55690 3906 }
299bf759 3907 else
37e55690 3908 {
142411ca
L		 3909 unsigned int type;
3910
55fd94b0
AM		 3911 type = bfd_get_8 (input_bfd,
3912 contents + rel->r_offset - 2);
299bf759 3913 switch (type)
26e41594 3914 {
299bf759
L		 3915 case 0x8b:
3916 /* movl */
299bf759
L		 3917 bfd_put_8 (output_bfd, 0xc7,
3918 contents + rel->r_offset - 2);
3919 bfd_put_8 (output_bfd,
3920 0xc0 | ((val >> 3) & 7),
3921 contents + rel->r_offset - 1);
3922 break;
3923 case 0x03:
3924 /* addl */
299bf759
L		 3925 bfd_put_8 (output_bfd, 0x81,
3926 contents + rel->r_offset - 2);
3927 bfd_put_8 (output_bfd,
3928 0xc0 | ((val >> 3) & 7),
3929 contents + rel->r_offset - 1);
3930 break;
3931 default:
3932 BFD_FAIL ();
3933 break;
26e41594 3934 }
37e55690 3935 }
eb4ff4d6 3936 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3937 contents + rel->r_offset);
3938 continue;
3939 }
3940 else
3941 {
3942 unsigned int val, type;
3943
3944 /* {IE_32,GOTIE}->LE transition:
3945 Originally it can be one of:
13ae64f3 3946 subl foo(%reg1), %reg2
13ae64f3 3947 movl foo(%reg1), %reg2
37e55690 3948 addl foo(%reg1), %reg2
13ae64f3
JJ		 3949 We change it into:
3950 subl $foo, %reg2
37e55690
JJ		 3951 movl $foo, %reg2 (6 byte form)
3952 addl $foo, %reg2. */
13ae64f3
JJ		 3953 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3954 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 3955 if (type == 0x8b)
3956 {
3957 /* movl */
13ae64f3
JJ		 3958 bfd_put_8 (output_bfd, 0xc7,
3959 contents + rel->r_offset - 2);
3960 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3961 contents + rel->r_offset - 1);
3962 }
3963 else if (type == 0x2b)
3964 {
3965 /* subl */
13ae64f3
JJ		 3966 bfd_put_8 (output_bfd, 0x81,
3967 contents + rel->r_offset - 2);
3968 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3969 contents + rel->r_offset - 1);
3970 }
37e55690
JJ		 3971 else if (type == 0x03)
3972 {
3973 /* addl */
3974 bfd_put_8 (output_bfd, 0x81,
3975 contents + rel->r_offset - 2);
3976 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3977 contents + rel->r_offset - 1);
3978 }
13ae64f3
JJ		 3979 else
3980 BFD_FAIL ();
37e55690 3981 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 3982 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3983 contents + rel->r_offset);
3984 else
eb4ff4d6 3985 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 3986 contents + rel->r_offset);
13ae64f3
JJ		 3987 continue;
3988 }
3989 }
3990
6de2ae4a 3991 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 3992 abort ();
3993
3994 if (h != NULL)
67a4f2b7
AO		 3995 {
3996 off = h->got.offset;
3997 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
3998 }
13ae64f3
JJ		 3999 else
4000 {
4001 if (local_got_offsets == NULL)
4002 abort ();
4003
4004 off = local_got_offsets[r_symndx];
67a4f2b7 4005 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4006 }
4007
4008 if ((off & 1) != 0)
4009 off &= ~1;
26e41594 4010 else
13ae64f3 4011 {
947216bf 4012 Elf_Internal_Rela outrel;
91d6fa6a 4013 int dr_type;
67a4f2b7 4014 asection *sreloc;
13ae64f3 4015
6de2ae4a 4016 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4017 abort ();
4018
67a4f2b7
AO		 4019 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4020
4021 if (GOT_TLS_GDESC_P (tls_type))
4022 {
59d6ffb2 4023 bfd_byte *loc;
67a4f2b7
AO		 4024 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4025 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4026 <= htab->elf.sgotplt->size);
4027 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4028 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4029 + offplt
4030 + htab->sgotplt_jump_table_size);
6de2ae4a 4031 sreloc = htab->elf.srelplt;
67a4f2b7 4032 loc = sreloc->contents;
5ae0bfb6
RS		 4033 loc += (htab->next_tls_desc_index++
4034 * sizeof (Elf32_External_Rel));
67a4f2b7 4035 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4036 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4037 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4038 if (indx == 0)
4039 {
4040 BFD_ASSERT (! unresolved_reloc);
4041 bfd_put_32 (output_bfd,
eb4ff4d6 4042 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4043 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4044 + htab->sgotplt_jump_table_size + 4);
4045 }
4046 else
4047 {
4048 bfd_put_32 (output_bfd, 0,
6de2ae4a 4049 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4050 + htab->sgotplt_jump_table_size + 4);
4051 }
4052 }
4053
6de2ae4a 4054 sreloc = htab->elf.srelgot;
67a4f2b7 4055
6de2ae4a
L		 4056 outrel.r_offset = (htab->elf.sgot->output_section->vma
4057 + htab->elf.sgot->output_offset + off);
13ae64f3 4058
67a4f2b7 4059 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4060 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4061 else if (GOT_TLS_GDESC_P (tls_type))
4062 goto dr_done;
37e55690
JJ		 4063 else if (tls_type == GOT_TLS_IE_POS)
4064 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4065 else
4066 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4067
37e55690 4068 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4069 bfd_put_32 (output_bfd,
4070 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4071 htab->elf.sgot->contents + off);
37e55690 4072 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4073 bfd_put_32 (output_bfd,
eb4ff4d6 4074 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4075 htab->elf.sgot->contents + off);
67a4f2b7 4076 else if (dr_type != R_386_TLS_DESC)
c366c25e 4077 bfd_put_32 (output_bfd, 0,
6de2ae4a 4078 htab->elf.sgot->contents + off);
13ae64f3 4079 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4080
59d6ffb2 4081 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4082
67a4f2b7 4083 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4084 {
4085 if (indx == 0)
4086 {
82e51918 4087 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4088 bfd_put_32 (output_bfd,
eb4ff4d6 4089 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4090 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4091 }
4092 else
4093 {
4094 bfd_put_32 (output_bfd, 0,
6de2ae4a 4095 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4096 outrel.r_info = ELF32_R_INFO (indx,
4097 R_386_TLS_DTPOFF32);
4098 outrel.r_offset += 4;
59d6ffb2 4099 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4100 }
4101 }
37e55690
JJ		 4102 else if (tls_type == GOT_TLS_IE_BOTH)
4103 {
4104 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4105 (indx == 0
4106 ? relocation - elf_i386_dtpoff_base (info)
4107 : 0),
6de2ae4a 4108 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4109 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4110 outrel.r_offset += 4;
59d6ffb2 4111 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4112 }
13ae64f3 4113
67a4f2b7 4114 dr_done:
13ae64f3
JJ		 4115 if (h != NULL)
4116 h->got.offset |= 1;
4117 else
4118 local_got_offsets[r_symndx] |= 1;
4119 }
4120
67a4f2b7
AO		 4121 if (off >= (bfd_vma) -2
4122 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4123 abort ();
67a4f2b7
AO		 4124 if (r_type == R_386_TLS_GOTDESC
4125 || r_type == R_386_TLS_DESC_CALL)
4126 {
4127 relocation = htab->sgotplt_jump_table_size + offplt;
4128 unresolved_reloc = FALSE;
4129 }
4130 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4131 {
6de2ae4a
L		 4132 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4133 + htab->elf.sgotplt->output_offset;
4134 relocation = htab->elf.sgot->output_section->vma
4135 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4136 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4137 && tls_type == GOT_TLS_IE_BOTH)
4138 relocation += 4;
4139 if (r_type == R_386_TLS_IE)
8c37241b 4140 relocation += g_o_t;
b34976b6 4141 unresolved_reloc = FALSE;
13ae64f3 4142 }
67a4f2b7 4143 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4144 {
4145 unsigned int val, type;
4146 bfd_vma roff;
4147
4148 /* GD->IE transition. */
13ae64f3 4149 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4150 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4151 if (type == 0x04)
4152 {
4153 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4154 Change it into:
4155 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4156 val >>= 3;
142411ca 4157 roff = rel->r_offset - 3;
13ae64f3
JJ		 4158 }
4159 else
4160 {
4161 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4162 Change it into:
4163 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4164 roff = rel->r_offset - 2;
4165 }
4166 memcpy (contents + roff,
4167 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4168 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4169 /* If foo is used only with foo@gotntpoff(%reg) and
4170 foo@indntpoff, but not with foo@gottpoff(%reg), change
4171 subl $foo@gottpoff(%reg), %eax
4172 into:
4173 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4174 if (tls_type == GOT_TLS_IE_POS)
4175 contents[roff + 6] = 0x03;
8c37241b 4176 bfd_put_32 (output_bfd,
6de2ae4a
L		 4177 htab->elf.sgot->output_section->vma
4178 + htab->elf.sgot->output_offset + off
4179 - htab->elf.sgotplt->output_section->vma
4180 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4181 contents + roff + 8);
4182 /* Skip R_386_PLT32. */
4183 rel++;
4184 continue;
4185 }
67a4f2b7
AO		 4186 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4187 {
4188 /* GDesc -> IE transition.
4189 It's originally something like:
4190 leal x@tlsdesc(%ebx), %eax
4191
4192 Change it to:
142411ca 4193 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4194 or:
4195 movl x@gottpoff(%ebx), %eax # before negl %eax
4196
4197 Registers other than %eax may be set up here. */
4198
67a4f2b7
AO		 4199 bfd_vma roff;
4200
4201 /* First, make sure it's a leal adding ebx to a 32-bit
4202 offset into any register, although it's probably
4203 almost always going to be eax. */
4204 roff = rel->r_offset;
67a4f2b7
AO		 4205
4206 /* Now modify the instruction as appropriate. */
4207 /* To turn a leal into a movl in the form we use it, it
4208 suffices to change the first byte from 0x8d to 0x8b.
4209 aoliva FIXME: should we decide to keep the leal, all
4210 we have to do is remove the statement below, and
4211 adjust the relaxation of R_386_TLS_DESC_CALL. */
4212 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4213
4214 if (tls_type == GOT_TLS_IE_BOTH)
4215 off += 4;
4216
4217 bfd_put_32 (output_bfd,
6de2ae4a
L		 4218 htab->elf.sgot->output_section->vma
4219 + htab->elf.sgot->output_offset + off
4220 - htab->elf.sgotplt->output_section->vma
4221 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4222 contents + roff);
4223 continue;
4224 }
4225 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4226 {
4227 /* GDesc -> IE transition.
4228 It's originally:
4229 call *(%eax)
4230
4231 Change it to:
142411ca 4232 xchg %ax,%ax
67a4f2b7
AO		 4233 or
4234 negl %eax
4235 depending on how we transformed the TLS_GOTDESC above.
4236 */
4237
67a4f2b7
AO		 4238 bfd_vma roff;
4239
67a4f2b7 4240 roff = rel->r_offset;
67a4f2b7
AO		 4241
4242 /* Now modify the instruction as appropriate. */
4243 if (tls_type != GOT_TLS_IE_NEG)
4244 {
10efb593
L		 4245 /* xchg %ax,%ax */
4246 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4247 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4248 }
4249 else
4250 {
4251 /* negl %eax */
4252 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4253 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4254 }
4255
4256 continue;
4257 }
4258 else
4259 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4260 break;
4261
4262 case R_386_TLS_LDM:
142411ca
L		 4263 if (! elf_i386_tls_transition (info, input_bfd,
4264 input_section, contents,
4265 symtab_hdr, sym_hashes,
4266 &r_type, GOT_UNKNOWN, rel,
4c544807 4267 relend, h, r_symndx))
142411ca 4268 return FALSE;
13ae64f3 4269
142411ca
L		 4270 if (r_type != R_386_TLS_LDM)
4271 {
13ae64f3 4272 /* LD->LE transition:
13ae64f3
JJ		 4273 leal foo(%reg), %eax; call ___tls_get_addr.
4274 We change it into:
4275 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4276 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4277 memcpy (contents + rel->r_offset - 2,
4278 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4279 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4280 rel++;
4281 continue;
4282 }
4283
6de2ae4a 4284 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4285 abort ();
4286
4287 off = htab->tls_ldm_got.offset;
4288 if (off & 1)
4289 off &= ~1;
4290 else
4291 {
947216bf 4292 Elf_Internal_Rela outrel;
13ae64f3 4293
6de2ae4a 4294 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4295 abort ();
4296
6de2ae4a
L		 4297 outrel.r_offset = (htab->elf.sgot->output_section->vma
4298 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4299
4300 bfd_put_32 (output_bfd, 0,
6de2ae4a 4301 htab->elf.sgot->contents + off);
13ae64f3 4302 bfd_put_32 (output_bfd, 0,
6de2ae4a 4303 htab->elf.sgot->contents + off + 4);
13ae64f3 4304 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4305 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4306 htab->tls_ldm_got.offset |= 1;
4307 }
6de2ae4a
L		 4308 relocation = htab->elf.sgot->output_section->vma
4309 + htab->elf.sgot->output_offset + off
4310 - htab->elf.sgotplt->output_section->vma
4311 - htab->elf.sgotplt->output_offset;
b34976b6 4312 unresolved_reloc = FALSE;
13ae64f3
JJ		 4313 break;
4314
4315 case R_386_TLS_LDO_32:
959b0961 4316 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4317 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4318 else
4319 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4320 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4321 break;
4322
4323 case R_386_TLS_LE_32:
13ae64f3 4324 case R_386_TLS_LE:
1d85728f 4325 if (!info->executable)
37e55690 4326 {
947216bf 4327 Elf_Internal_Rela outrel;
37e55690 4328 asection *sreloc;
37e55690
JJ		 4329
4330 outrel.r_offset = rel->r_offset
4331 + input_section->output_section->vma
4332 + input_section->output_offset;
4333 if (h != NULL && h->dynindx != -1)
4334 indx = h->dynindx;
4335 else
4336 indx = 0;
4337 if (r_type == R_386_TLS_LE_32)
4338 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4339 else
4340 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4341 sreloc = elf_section_data (input_section)->sreloc;
4342 if (sreloc == NULL)
4343 abort ();
59d6ffb2 4344 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4345 if (indx)
4346 continue;
4347 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4348 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4349 else
eb4ff4d6 4350 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4351 }
4352 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4353 relocation = elf_i386_tpoff (info, relocation);
37e55690 4354 else
eb4ff4d6 4355 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4356 break;
4357
252b5132
RH		 4358 default:
4359 break;
4360 }
4361
239e1f3a
AM		 4362 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4363 because such sections are not SEC_ALLOC and thus ld.so will
4364 not process them. */
8c694914 4365 if (unresolved_reloc
239e1f3a 4366 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4367 && h->def_dynamic)
4368 && _bfd_elf_section_offset (output_bfd, info, input_section,
4369 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4370 {
4371 (*_bfd_error_handler)
843fe662 4372 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4373 input_bfd,
4374 input_section,
6a30718d 4375 (long) rel->r_offset,
843fe662 4376 howto->name,
6a30718d 4377 h->root.root.string);
b34976b6 4378 return FALSE;
6a30718d 4379 }
83be169b 4380
cbe950e9 4381do_relocation:
252b5132
RH		 4382 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4383 contents, rel->r_offset,
55fd94b0 4384 relocation, 0);
252b5132 4385
62d78908 4386check_relocation_error:
cf5c0c5b 4387 if (r != bfd_reloc_ok)
252b5132 4388 {
cf5c0c5b 4389 const char *name;
ffb2e45b 4390
cf5c0c5b
AM		 4391 if (h != NULL)
4392 name = h->root.root.string;
4393 else
4394 {
4395 name = bfd_elf_string_from_elf_section (input_bfd,
4396 symtab_hdr->sh_link,
4397 sym->st_name);
4398 if (name == NULL)
b34976b6 4399 return FALSE;
cf5c0c5b
AM		 4400 if (*name == '\0')
4401 name = bfd_section_name (input_bfd, sec);
4402 }
ffb2e45b 4403
cf5c0c5b
AM		 4404 if (r == bfd_reloc_overflow)
4405 {
cf5c0c5b 4406 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4407 (info, (h ? &h->root : NULL), name, howto->name,
4408 (bfd_vma) 0, input_bfd, input_section,
4409 rel->r_offset)))
b34976b6 4410 return FALSE;
cf5c0c5b
AM		 4411 }
4412 else
4413 {
4414 (*_bfd_error_handler)
d003868e
AM		 4415 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4416 input_bfd, input_section,
cf5c0c5b 4417 (long) rel->r_offset, name, (int) r);
b34976b6 4418 return FALSE;
cf5c0c5b 4419 }
252b5132
RH		 4420 }
4421 }
4422
b34976b6 4423 return TRUE;
252b5132
RH		 4424}
4425
4426/* Finish up dynamic symbol handling. We set the contents of various
4427 dynamic sections here. */
4428
b34976b6 4429static bfd_boolean
55fd94b0
AM		 4430elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4431 struct bfd_link_info *info,
4432 struct elf_link_hash_entry *h,
4433 Elf_Internal_Sym *sym)
252b5132 4434{
6725bdbf 4435 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4436 unsigned plt_entry_size;
4437 const struct elf_i386_backend_data *abed;
252b5132 4438
6725bdbf 4439 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4440 if (htab == NULL)
4441 return FALSE;
252b5132 4442
25e762b9
RM		 4443 abed = get_elf_i386_backend_data (output_bfd);
4444 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4445
252b5132
RH		 4446 if (h->plt.offset != (bfd_vma) -1)
4447 {
252b5132
RH		 4448 bfd_vma plt_index;
4449 bfd_vma got_offset;
947216bf
AM		 4450 Elf_Internal_Rela rel;
4451 bfd_byte *loc;
cbe950e9
L		 4452 asection *plt, *gotplt, *relplt;
4453
4454 /* When building a static executable, use .iplt, .igot.plt and
4455 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4456 if (htab->elf.splt != NULL)
cbe950e9 4457 {
6de2ae4a
L		 4458 plt = htab->elf.splt;
4459 gotplt = htab->elf.sgotplt;
4460 relplt = htab->elf.srelplt;
cbe950e9
L		 4461 }
4462 else
4463 {
6de2ae4a
L		 4464 plt = htab->elf.iplt;
4465 gotplt = htab->elf.igotplt;
4466 relplt = htab->elf.irelplt;
cbe950e9 4467 }
252b5132
RH		 4468
4469 /* This symbol has an entry in the procedure linkage table. Set
4470 it up. */
4471
cbe950e9
L		 4472 if ((h->dynindx == -1
4473 && !((h->forced_local || info->executable)
4474 && h->def_regular
4475 && h->type == STT_GNU_IFUNC))
4476 || plt == NULL
4477 || gotplt == NULL
4478 || relplt == NULL)
cec7f46a 4479 abort ();
252b5132
RH		 4480
4481 /* Get the index in the procedure linkage table which
4482 corresponds to this symbol. This is the index of this symbol
4483 in all the symbols for which we are making plt entries. The
cbe950e9 4484 first entry in the procedure linkage table is reserved.
252b5132 4485
cbe950e9 4486 Get the offset into the .got table of the entry that
252b5132 4487 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4488 The first three are reserved.
6bbec505 4489
cbe950e9
L		 4490 For static executables, we don't reserve anything. */
4491
6de2ae4a 4492 if (plt == htab->elf.splt)
cbe950e9 4493 {
e1f98742
L		 4494 got_offset = h->plt.offset / plt_entry_size - 1;
4495 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4496 }
4497 else
4498 {
e1f98742
L		 4499 got_offset = h->plt.offset / plt_entry_size;
4500 got_offset = got_offset * 4;
cbe950e9 4501 }
252b5132
RH		 4502
4503 /* Fill in the entry in the procedure linkage table. */
4504 if (! info->shared)
4505 {
25e762b9
RM		 4506 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4507 abed->plt->plt_entry_size);
252b5132 4508 bfd_put_32 (output_bfd,
cbe950e9
L		 4509 (gotplt->output_section->vma
4510 + gotplt->output_offset
252b5132 4511 + got_offset),
25e762b9
RM		 4512 plt->contents + h->plt.offset
4513 + abed->plt->plt_got_offset);
eac338cf 4514
25e762b9 4515 if (abed->is_vxworks)
eac338cf
PB		 4516 {
4517 int s, k, reloc_index;
4518
4519 /* Create the R_386_32 relocation referencing the GOT
4520 for this PLT entry. */
4521
4522 /* S: Current slot number (zero-based). */
25e762b9
RM		 4523 s = ((h->plt.offset - abed->plt->plt_entry_size)
4524 / abed->plt->plt_entry_size);
eac338cf
PB		 4525 /* K: Number of relocations for PLTResolve. */
4526 if (info->shared)
4527 k = PLTRESOLVE_RELOCS_SHLIB;
4528 else
4529 k = PLTRESOLVE_RELOCS;
4530 /* Skip the PLTresolve relocations, and the relocations for
4531 the other PLT slots. */
4532 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4533 loc = (htab->srelplt2->contents + reloc_index
4534 * sizeof (Elf32_External_Rel));
4535
6de2ae4a
L		 4536 rel.r_offset = (htab->elf.splt->output_section->vma
4537 + htab->elf.splt->output_offset
eac338cf 4538 + h->plt.offset + 2),
7325306f 4539 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4540 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4541
4542 /* Create the R_386_32 relocation referencing the beginning of
4543 the PLT for this GOT entry. */
6de2ae4a
L		 4544 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4545 + htab->elf.sgotplt->output_offset
eac338cf 4546 + got_offset);
7325306f 4547 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4548 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4549 loc + sizeof (Elf32_External_Rel));
eac338cf 4550 }
252b5132
RH		 4551 }
4552 else
4553 {
25e762b9
RM		 4554 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4555 abed->plt->plt_entry_size);
252b5132 4556 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4557 plt->contents + h->plt.offset
4558 + abed->plt->plt_got_offset);
252b5132
RH		 4559 }
4560
252b5132
RH		 4561 /* Fill in the entry in the global offset table. */
4562 bfd_put_32 (output_bfd,
cbe950e9
L		 4563 (plt->output_section->vma
4564 + plt->output_offset
252b5132 4565 + h->plt.offset
25e762b9 4566 + abed->plt->plt_lazy_offset),
cbe950e9 4567 gotplt->contents + got_offset);
252b5132
RH		 4568
4569 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4570 rel.r_offset = (gotplt->output_section->vma
4571 + gotplt->output_offset
252b5132 4572 + got_offset);
cbe950e9
L		 4573 if (h->dynindx == -1
4574 || ((info->executable
4575 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4576 && h->def_regular
4577 && h->type == STT_GNU_IFUNC))
4578 {
4579 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4580 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4581 in the .got.plt section. */
4582 bfd_put_32 (output_bfd,
23209a78 4583 (h->root.u.def.value
cbe950e9
L		 4584 + h->root.u.def.section->output_section->vma
4585 + h->root.u.def.section->output_offset),
4586 gotplt->contents + got_offset);
4587 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4588 /* R_386_IRELATIVE comes last. */
4589 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4590 }
4591 else
e1f98742
L		 4592 {
4593 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4594 plt_index = htab->next_jump_slot_index++;
4595 }
cbe950e9 4596 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4597 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4598
e1f98742
L		 4599 /* Don't fill PLT entry for static executables. */
4600 if (plt == htab->elf.splt)
4601 {
4602 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4603 plt->contents + h->plt.offset
4604 + abed->plt->plt_reloc_offset);
4605 bfd_put_32 (output_bfd, - (h->plt.offset
4606 + abed->plt->plt_plt_offset + 4),
4607 plt->contents + h->plt.offset
4608 + abed->plt->plt_plt_offset);
4609 }
4610
f5385ebf 4611 if (!h->def_regular)
252b5132
RH		 4612 {
4613 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 4614 the .plt section. Leave the value if there were any
4615 relocations where pointer equality matters (this is a clue
51b64d56
AM		 4616 for the dynamic linker, to make function pointer
4617 comparisons work between an application and shared
c6585bbb
JJ		 4618 library), otherwise set it to zero. If a function is only
4619 called from a binary, there is no need to slow down
4620 shared libraries because of that. */
252b5132 4621 sym->st_shndx = SHN_UNDEF;
f5385ebf 4622 if (!h->pointer_equality_needed)
c6585bbb 4623 sym->st_value = 0;
252b5132
RH		 4624 }
4625 }
4626
13ae64f3 4627 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4628 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4629 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4630 {
947216bf 4631 Elf_Internal_Rela rel;
252b5132
RH		 4632
4633 /* This symbol has an entry in the global offset table. Set it
4634 up. */
4635
6de2ae4a 4636 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4637 abort ();
252b5132 4638
6de2ae4a
L		 4639 rel.r_offset = (htab->elf.sgot->output_section->vma
4640 + htab->elf.sgot->output_offset
dc810e39 4641 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4642
dd5724d5
AM		 4643 /* If this is a static link, or it is a -Bsymbolic link and the
4644 symbol is defined locally or was forced to be local because
4645 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4646 The entry in the global offset table will already have been
4647 initialized in the relocate_section function. */
710ab287 4648 if (h->def_regular
0018b0a3
L		 4649 && h->type == STT_GNU_IFUNC)
4650 {
710ab287
L		 4651 if (info->shared)
4652 {
4653 /* Generate R_386_GLOB_DAT. */
4654 goto do_glob_dat;
4655 }
4656 else
4657 {
cd2b2c10
L		 4658 asection *plt;
4659
710ab287
L		 4660 if (!h->pointer_equality_needed)
4661 abort ();
4662
4663 /* For non-shared object, we can't use .got.plt, which
4664 contains the real function addres if we need pointer
4665 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4666 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4667 bfd_put_32 (output_bfd,
4668 (plt->output_section->vma
4669 + plt->output_offset + h->plt.offset),
6de2ae4a 4670 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4671 return TRUE;
4672 }
0018b0a3
L		 4673 }
4674 else if (info->shared
4675 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4676 {
6725bdbf 4677 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4678 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4679 }
252b5132
RH		 4680 else
4681 {
dd5724d5 4682 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4683do_glob_dat:
6725bdbf 4684 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4685 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4686 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4687 }
4688
59d6ffb2 4689 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 4690 }
4691
f5385ebf 4692 if (h->needs_copy)
252b5132 4693 {
947216bf 4694 Elf_Internal_Rela rel;
252b5132
RH		 4695
4696 /* This symbol needs a copy reloc. Set it up. */
4697
ffb2e45b
AM		 4698 if (h->dynindx == -1
4699 || (h->root.type != bfd_link_hash_defined
4700 && h->root.type != bfd_link_hash_defweak)
4701 || htab->srelbss == NULL)
4702 abort ();
252b5132
RH		 4703
4704 rel.r_offset = (h->root.u.def.value
4705 + h->root.u.def.section->output_section->vma
4706 + h->root.u.def.section->output_offset);
4707 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 4708 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 4709 }
4710
b34976b6 4711 return TRUE;
252b5132
RH		 4712}
4713
c25bc9fc
L		 4714/* Finish up local dynamic symbol handling. We set the contents of
4715 various dynamic sections here. */
4716
4717static bfd_boolean
4718elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4719{
4720 struct elf_link_hash_entry *h
4721 = (struct elf_link_hash_entry *) *slot;
4722 struct bfd_link_info *info
23209a78 4723 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4724
4725 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4726 h, NULL);
4727}
4728
38701953
AM		 4729/* Used to decide how to sort relocs in an optimal manner for the
4730 dynamic linker, before writing them out. */
4731
4732static enum elf_reloc_type_class
55fd94b0 4733elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
38701953 4734{
55fd94b0 4735 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4736 {
4737 case R_386_RELATIVE:
4738 return reloc_class_relative;
4739 case R_386_JUMP_SLOT:
4740 return reloc_class_plt;
4741 case R_386_COPY:
4742 return reloc_class_copy;
4743 default:
4744 return reloc_class_normal;
4745 }
4746}
4747
252b5132
RH		 4748/* Finish up the dynamic sections. */
4749
b34976b6 4750static bfd_boolean
55fd94b0
AM		 4751elf_i386_finish_dynamic_sections (bfd *output_bfd,
4752 struct bfd_link_info *info)
252b5132 4753{
6725bdbf 4754 struct elf_i386_link_hash_table *htab;
252b5132 4755 bfd *dynobj;
252b5132 4756 asection *sdyn;
25e762b9 4757 const struct elf_i386_backend_data *abed;
252b5132 4758
6725bdbf 4759 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4760 if (htab == NULL)
4761 return FALSE;
4762
ebe50bae 4763 dynobj = htab->elf.dynobj;
3d4d4302 4764 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4765 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4766
ebe50bae 4767 if (htab->elf.dynamic_sections_created)
252b5132 4768 {
252b5132
RH		 4769 Elf32_External_Dyn *dyncon, *dynconend;
4770
6de2ae4a 4771 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4772 abort ();
252b5132
RH		 4773
4774 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4775 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4776 for (; dyncon < dynconend; dyncon++)
4777 {
4778 Elf_Internal_Dyn dyn;
51b64d56 4779 asection *s;
252b5132
RH		 4780
4781 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4782
4783 switch (dyn.d_tag)
4784 {
4785 default:
25e762b9
RM		 4786 if (abed->is_vxworks
4787 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 4788 break;
0ac8d2ca 4789 continue;
252b5132
RH		 4790
4791 case DT_PLTGOT:
6de2ae4a 4792 s = htab->elf.sgotplt;
8c37241b 4793 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 4794 break;
4795
252b5132 4796 case DT_JMPREL:
6de2ae4a 4797 s = htab->elf.srelplt;
6348e046 4798 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 4799 break;
4800
4801 case DT_PLTRELSZ:
6de2ae4a 4802 s = htab->elf.srelplt;
eea6121a 4803 dyn.d_un.d_val = s->size;
252b5132
RH		 4804 break;
4805
4806 case DT_RELSZ:
4807 /* My reading of the SVR4 ABI indicates that the
4808 procedure linkage table relocs (DT_JMPREL) should be
4809 included in the overall relocs (DT_REL). This is
4810 what Solaris does. However, UnixWare can not handle
4811 that case. Therefore, we override the DT_RELSZ entry
6348e046 4812 here to make it not include the JMPREL relocs. */
6de2ae4a 4813 s = htab->elf.srelplt;
6348e046
AM		 4814 if (s == NULL)
4815 continue;
eea6121a 4816 dyn.d_un.d_val -= s->size;
6348e046
AM		 4817 break;
4818
4819 case DT_REL:
4820 /* We may not be using the standard ELF linker script.
4821 If .rel.plt is the first .rel section, we adjust
4822 DT_REL to not include it. */
6de2ae4a 4823 s = htab->elf.srelplt;
6348e046
AM		 4824 if (s == NULL)
4825 continue;
4826 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4827 continue;
eea6121a 4828 dyn.d_un.d_ptr += s->size;
252b5132
RH		 4829 break;
4830 }
0ac8d2ca
AM		 4831
4832 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 4833 }
4834
4835 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 4836 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 4837 {
4838 if (info->shared)
eac338cf 4839 {
25e762b9
RM		 4840 memcpy (htab->elf.splt->contents, abed->plt->pic_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);
eac338cf 4845 }
252b5132
RH		 4846 else
4847 {
25e762b9
RM		 4848 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
4849 abed->plt->plt0_entry_size);
4850 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4851 abed->plt0_pad_byte,
4852 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 4853 bfd_put_32 (output_bfd,
6de2ae4a
L		 4854 (htab->elf.sgotplt->output_section->vma
4855 + htab->elf.sgotplt->output_offset
6725bdbf 4856 + 4),
25e762b9
RM		 4857 htab->elf.splt->contents
4858 + abed->plt->plt0_got1_offset);
252b5132 4859 bfd_put_32 (output_bfd,
6de2ae4a
L		 4860 (htab->elf.sgotplt->output_section->vma
4861 + htab->elf.sgotplt->output_offset
6725bdbf 4862 + 8),
25e762b9
RM		 4863 htab->elf.splt->contents
4864 + abed->plt->plt0_got2_offset);
eac338cf 4865
25e762b9 4866 if (abed->is_vxworks)
eac338cf
PB		 4867 {
4868 Elf_Internal_Rela rel;
7325306f 4869
eac338cf
PB		 4870 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4871 On IA32 we use REL relocations so the addend goes in
4872 the PLT directly. */
6de2ae4a
L		 4873 rel.r_offset = (htab->elf.splt->output_section->vma
4874 + htab->elf.splt->output_offset
25e762b9 4875 + abed->plt->plt0_got1_offset);
7325306f 4876 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4877 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4878 htab->srelplt2->contents);
4879 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 4880 rel.r_offset = (htab->elf.splt->output_section->vma
4881 + htab->elf.splt->output_offset
25e762b9 4882 + abed->plt->plt0_got2_offset);
7325306f 4883 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4884 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4885 htab->srelplt2->contents +
4886 sizeof (Elf32_External_Rel));
4887 }
252b5132
RH		 4888 }
4889
4890 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4891 really seem like the right value. */
6de2ae4a 4892 elf_section_data (htab->elf.splt->output_section)
6725bdbf 4893 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 4894
4895 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 4896 if (abed->is_vxworks && !info->shared)
eac338cf 4897 {
25e762b9
RM		 4898 int num_plts = (htab->elf.splt->size
4899 / abed->plt->plt_entry_size) - 1;
4c9b0de6 4900 unsigned char *p;
eac338cf
PB		 4901
4902 p = htab->srelplt2->contents;
4903 if (info->shared)
4904 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4905 else
4906 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4907
4908 for (; num_plts; num_plts--)
4909 {
4910 Elf_Internal_Rela rel;
4911 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4912 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4913 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4914 p += sizeof (Elf32_External_Rel);
4915
4916 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4917 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4918 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4919 p += sizeof (Elf32_External_Rel);
4920 }
4921 }
252b5132
RH		 4922 }
4923 }
4924
6de2ae4a 4925 if (htab->elf.sgotplt)
252b5132 4926 {
56d4289c
L		 4927 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4928 {
4929 (*_bfd_error_handler)
4930 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4931 return FALSE;
4932 }
4933
12d0ee4a 4934 /* Fill in the first three entries in the global offset table. */
6de2ae4a 4935 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 4936 {
4937 bfd_put_32 (output_bfd,
55fd94b0 4938 (sdyn == NULL ? 0
12d0ee4a 4939 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 4940 htab->elf.sgotplt->contents);
4941 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4942 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 4943 }
252b5132 4944
6de2ae4a 4945 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 4946 }
8c37241b 4947
e41b3a13 4948 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 4949 if (htab->plt_eh_frame != NULL
4950 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 4951 {
4952 if (htab->elf.splt != NULL
4953 && htab->elf.splt->size != 0
4954 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
4955 && htab->elf.splt->output_section != NULL
4956 && htab->plt_eh_frame->output_section != NULL)
4957 {
4958 bfd_vma plt_start = htab->elf.splt->output_section->vma;
4959 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
4960 + htab->plt_eh_frame->output_offset
4961 + PLT_FDE_START_OFFSET;
4962 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4963 htab->plt_eh_frame->contents
4964 + PLT_FDE_START_OFFSET);
4965 }
4966 if (htab->plt_eh_frame->sec_info_type
dbaa2011 4967 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 4968 {
4969 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4970 htab->plt_eh_frame,
4971 htab->plt_eh_frame->contents))
4972 return FALSE;
4973 }
4974 }
4975
6de2ae4a
L		 4976 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4977 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 4978
c25bc9fc
L		 4979 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4980 htab_traverse (htab->loc_hash_table,
4981 elf_i386_finish_local_dynamic_symbol,
4982 info);
4983
b34976b6 4984 return TRUE;
252b5132
RH		 4985}
4986
4c45e5c9
JJ		 4987/* Return address for Ith PLT stub in section PLT, for relocation REL
4988 or (bfd_vma) -1 if it should not be included. */
4989
4990static bfd_vma
4991elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
4992 const arelent *rel ATTRIBUTE_UNUSED)
4993{
25e762b9 4994 return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
4c45e5c9
JJ		 4995}
4996
fdc90cb4
JJ		 4997/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
4998
4999static bfd_boolean
5000elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5001{
5002 if (h->plt.offset != (bfd_vma) -1
5003 && !h->def_regular
5004 && !h->pointer_equality_needed)
5005 return FALSE;
5006
5007 return _bfd_elf_hash_symbol (h);
5008}
4c45e5c9 5009
d8045f23
NC		 5010/* Hook called by the linker routine which adds symbols from an object
5011 file. */
5012
5013static bfd_boolean
c16153ae 5014elf_i386_add_symbol_hook (bfd * abfd,
d8045f23
NC		 5015 struct bfd_link_info * info ATTRIBUTE_UNUSED,
5016 Elf_Internal_Sym * sym,
5017 const char ** namep ATTRIBUTE_UNUSED,
5018 flagword * flagsp ATTRIBUTE_UNUSED,
5019 asection ** secp ATTRIBUTE_UNUSED,
5020 bfd_vma * valp ATTRIBUTE_UNUSED)
5021{
c16153ae 5022 if ((abfd->flags & DYNAMIC) == 0
f64b2e8d
NC		 5023 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5024 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
5025 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC		 5026
5027 return TRUE;
5028}
5029
252b5132
RH		 5030#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
5031#define TARGET_LITTLE_NAME "elf32-i386"
5032#define ELF_ARCH bfd_arch_i386
ae95ffa6 5033#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5034#define ELF_MACHINE_CODE EM_386
5035#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5036
5037#define elf_backend_can_gc_sections 1
51b64d56 5038#define elf_backend_can_refcount 1
252b5132
RH		 5039#define elf_backend_want_got_plt 1
5040#define elf_backend_plt_readonly 1
5041#define elf_backend_want_plt_sym 0
5042#define elf_backend_got_header_size 12
e41b3a13 5043#define elf_backend_plt_alignment 4
252b5132 5044
8c29f035
AM		 5045/* Support RELA for objdump of prelink objects. */
5046#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5047#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5048
13ae64f3 5049#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5050
dd5724d5
AM		 5051#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5052#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
c25bc9fc 5053#define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
dd5724d5 5054#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5055#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM		 5056
5057#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5058#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5059#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5060#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5061#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5062#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5063#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5064#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5065#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5066#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5067#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5068#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5069#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5070#define elf_backend_relocate_section elf_i386_relocate_section
5071#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5072#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5073#define elf_backend_omit_section_dynsym \
5074 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 5075#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 5076#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23
NC		 5077#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
5078#undef elf_backend_post_process_headers
5079#define elf_backend_post_process_headers _bfd_elf_set_osabi
dd5724d5 5080
252b5132 5081#include "elf32-target.h"
2bc3c89a
AM		 5082
5083/* FreeBSD support. */
5084
5085#undef TARGET_LITTLE_SYM
5086#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
5087#undef TARGET_LITTLE_NAME
5088#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5089#undef ELF_OSABI
5090#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5091
5092/* The kernel recognizes executables as valid only if they carry a
5093 "FreeBSD" label in the ELF header. So we put this label on all
5094 executables and (for simplicity) also all other object files. */
5095
2bc3c89a 5096static void
d8045f23 5097elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5098{
d8045f23 5099 _bfd_elf_set_osabi (abfd, info);
2bc3c89a 5100
2bc3c89a
AM		 5101#ifdef OLD_FREEBSD_ABI_LABEL
5102 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5103 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 5104#endif
2bc3c89a
AM		 5105}
5106
5107#undef elf_backend_post_process_headers
d8045f23 5108#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5109#undef elf32_bed
5110#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5111
d8045f23
NC		 5112#undef elf_backend_add_symbol_hook
5113
2bc3c89a 5114#include "elf32-target.h"
eac338cf 5115
a6cc6b3b
RO		 5116/* Solaris 2. */
5117
5118#undef TARGET_LITTLE_SYM
5119#define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec
5120#undef TARGET_LITTLE_NAME
5121#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5122
5123/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5124 objects won't be recognized. */
5125#undef ELF_OSABI
5126
5127#undef elf32_bed
5128#define elf32_bed elf32_i386_sol2_bed
5129
7dc98aea
RO		 5130/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5131 boundary. */
5132#undef elf_backend_static_tls_alignment
5133#define elf_backend_static_tls_alignment 8
5134
a6cc6b3b
RO		 5135/* The Solaris 2 ABI requires a plt symbol on all platforms.
5136
5137 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5138 File, p.63. */
5139#undef elf_backend_want_plt_sym
5140#define elf_backend_want_plt_sym 1
5141
5142#include "elf32-target.h"
5143
a27e4371
RM		 5144/* Native Client support. */
5145
5146#undef TARGET_LITTLE_SYM
5147#define TARGET_LITTLE_SYM bfd_elf32_i386_nacl_vec
5148#undef TARGET_LITTLE_NAME
5149#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5150#undef elf32_bed
5151#define elf32_bed elf32_i386_nacl_bed
5152
5153#undef ELF_MAXPAGESIZE
5154#define ELF_MAXPAGESIZE 0x10000
5155
5156/* Restore defaults. */
5157#undef ELF_OSABI
5158#undef elf_backend_want_plt_sym
5159#define elf_backend_want_plt_sym 0
5160#undef elf_backend_post_process_headers
5161#define elf_backend_post_process_headers _bfd_elf_set_osabi
5162#undef elf_backend_static_tls_alignment
5163
5164/* NaCl uses substantially different PLT entries for the same effects. */
5165
5166#undef elf_backend_plt_alignment
5167#define elf_backend_plt_alignment 5
5168#define NACL_PLT_ENTRY_SIZE 64
5169#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5170
5171static const bfd_byte elf_i386_nacl_plt0_entry[] =
5172 {
5173 0xff, 0x35, /* pushl contents of address */
5174 0, 0, 0, 0, /* replaced with address of .got + 4. */
5175 0x8b, 0x0d, /* movl contents of address, %ecx */
5176 0, 0, 0, 0, /* replaced with address of .got + 8. */
5177 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5178 0xff, 0xe1 /* jmp *%ecx */
5179 };
5180
5181static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5182 {
5183 0x8b, 0x0d, /* movl contents of address, %ecx */
5184 0, 0, 0, 0, /* replaced with GOT slot address. */
5185 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5186 0xff, 0xe1, /* jmp *%ecx */
5187
5188 /* Pad to the next 32-byte boundary with nop instructions. */
5189 0x90,
5190 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5191 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5192
5193 /* Lazy GOT entries point here (32-byte aligned). */
5194 0x68, /* pushl immediate */
5195 0, 0, 0, 0, /* replaced with reloc offset. */
5196 0xe9, /* jmp relative */
5197 0, 0, 0, 0, /* replaced with offset to .plt. */
5198
5199 /* Pad to the next 32-byte boundary with nop instructions. */
5200 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5201 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5202 0x90, 0x90
5203 };
5204
5205static const bfd_byte
5206elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5207 {
5208 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5209 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5210 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5211 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5212
5213 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5214 so pad to that size with nop instructions. */
5215 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5216 };
5217
5218static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5219 {
5220 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5221 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5222 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5223 0xff, 0xe1, /* jmp *%ecx */
5224
5225 /* Pad to the next 32-byte boundary with nop instructions. */
5226 0x90,
5227 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5228 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5229
5230 /* Lazy GOT entries point here (32-byte aligned). */
5231 0x68, /* pushl immediate */
5232 0, 0, 0, 0, /* replaced with offset into relocation table. */
5233 0xe9, /* jmp relative */
5234 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5235
5236 /* Pad to the next 32-byte boundary with nop instructions. */
5237 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5238 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5239 0x90, 0x90
5240 };
5241
5242static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5243 {
5244#if (PLT_CIE_LENGTH != 20 \
5245 || PLT_FDE_LENGTH != 36 \
5246 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5247 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5248# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5249#endif
5250 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5251 0, 0, 0, 0, /* CIE ID */
5252 1, /* CIE version */
5253 'z', 'R', 0, /* Augmentation string */
5254 1, /* Code alignment factor */
5255 0x7c, /* Data alignment factor: -4 */
5256 8, /* Return address column */
5257 1, /* Augmentation size */
5258 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5259 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5260 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5261 DW_CFA_nop, DW_CFA_nop,
5262
5263 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5264 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5265 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5266 0, 0, 0, 0, /* .plt size goes here */
5267 0, /* Augmentation size */
5268 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5269 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5270 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5271 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5272 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5273 13, /* Block length */
5274 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5275 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5276 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5277 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5278 DW_CFA_nop, DW_CFA_nop
5279 };
5280
5281static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5282 {
5283 elf_i386_nacl_plt0_entry, /* plt0_entry */
5284 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5285 2, /* plt0_got1_offset */
5286 8, /* plt0_got2_offset */
5287 elf_i386_nacl_plt_entry, /* plt_entry */
5288 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5289 2, /* plt_got_offset */
5290 33, /* plt_reloc_offset */
5291 38, /* plt_plt_offset */
5292 32, /* plt_lazy_offset */
5293 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5294 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5295 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5296 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5297 };
5298
5299static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5300 {
5301 &elf_i386_nacl_plt, /* plt */
5302 0x90, /* plt0_pad_byte: nop insn */
5303 0, /* is_vxworks */
5304 };
5305
5306#undef elf_backend_arch_data
5307#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5308
5a68afcf
RM		 5309#undef elf_backend_modify_segment_map
5310#define elf_backend_modify_segment_map nacl_modify_segment_map
5311#undef elf_backend_modify_program_headers
5312#define elf_backend_modify_program_headers nacl_modify_program_headers
5313
a27e4371
RM		 5314#include "elf32-target.h"
5315
5a68afcf
RM		 5316/* Restore defaults. */
5317#undef elf_backend_modify_segment_map
5318#undef elf_backend_modify_program_headers
5319
eac338cf
PB		 5320/* VxWorks support. */
5321
5322#undef TARGET_LITTLE_SYM
5323#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
5324#undef TARGET_LITTLE_NAME
5325#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5326#undef ELF_OSABI
a27e4371
RM		 5327#undef elf_backend_plt_alignment
5328#define elf_backend_plt_alignment 4
eac338cf 5329
23209a78
RM		 5330static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5331 {
25e762b9 5332 &elf_i386_plt, /* plt */
23209a78
RM		 5333 0x90, /* plt0_pad_byte */
5334 1, /* is_vxworks */
5335 };
eac338cf 5336
23209a78
RM		 5337#undef elf_backend_arch_data
5338#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5339
13285a1b
AM		 5340#undef elf_backend_relocs_compatible
5341#undef elf_backend_post_process_headers
eac338cf
PB		 5342#undef elf_backend_add_symbol_hook
5343#define elf_backend_add_symbol_hook \
5344 elf_vxworks_add_symbol_hook
5345#undef elf_backend_link_output_symbol_hook
5346#define elf_backend_link_output_symbol_hook \
9c72ff84 5347 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5348#undef elf_backend_emit_relocs
5349#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5350#undef elf_backend_final_write_processing
5351#define elf_backend_final_write_processing \
5352 elf_vxworks_final_write_processing
7dc98aea 5353#undef elf_backend_static_tls_alignment
eac338cf
PB		 5354
5355/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5356 define it. */
5357#undef elf_backend_want_plt_sym
5358#define elf_backend_want_plt_sym 1
5359
5360#undef elf32_bed
5361#define elf32_bed elf32_i386_vxworks_bed
5362
5363#include "elf32-target.h"
GDB Binutils - Deliverables
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