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* gdb.gdb/selftest.exp (do_steps_and_nexts): Handle bfd_init
[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
3bea1fcb
L		 2361 /* Since pc_count for TLS symbol can only have size relocations and
2362 we always resolve size relocation against non-zero TLS symbol, we
2363 clear pc_count for non-zero TLS symbol. */
2364 if (h->type == STT_TLS && h->size != 0)
2365 {
2366 struct elf_dyn_relocs **pp;
2367
2368 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2369 {
2370 p->count -= p->pc_count;
2371 p->pc_count = 0;
2372 if (p->count == 0)
2373 *pp = p->next;
2374 else
2375 pp = &p->next;
2376 }
2377 }
2378
0c715baa
AM		 2379 /* In the shared -Bsymbolic case, discard space allocated for
2380 dynamic pc-relative relocs against symbols which turn out to be
2381 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2382 space for pc-relative relocs that have become local due to symbol
2383 visibility changes. */
0c715baa
AM		 2384
2385 if (info->shared)
5a15f56f 2386 {
09695f56
AM		 2387 /* The only reloc that uses pc_count is R_386_PC32, which will
2388 appear on a call or on something like ".long foo - .". We
2389 want calls to protected symbols to resolve directly to the
2390 function rather than going via the plt. If people want
2391 function pointer comparisons to work as expected then they
2392 should avoid writing assembly like ".long foo - .". */
2393 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2394 {
e03a8ed8 2395 struct elf_dyn_relocs **pp;
0c715baa
AM		 2396
2397 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2398 {
2399 p->count -= p->pc_count;
2400 p->pc_count = 0;
2401 if (p->count == 0)
2402 *pp = p->next;
2403 else
2404 pp = &p->next;
2405 }
5a15f56f 2406 }
4e795f50 2407
23209a78 2408 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2409 {
e03a8ed8 2410 struct elf_dyn_relocs **pp;
3348747a
NS		 2411 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2412 {
2413 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2414 *pp = p->next;
2415 else
2416 pp = &p->next;
2417 }
2418 }
2419
4e795f50 2420 /* Also discard relocs on undefined weak syms with non-default
3348747a 2421 visibility. */
22d606e9 2422 if (eh->dyn_relocs != NULL
4e795f50 2423 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2424 {
2425 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2426 eh->dyn_relocs = NULL;
2427
2428 /* Make sure undefined weak symbols are output as a dynamic
2429 symbol in PIEs. */
2430 else if (h->dynindx == -1
2431 && !h->forced_local)
2432 {
2433 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2434 return FALSE;
2435 }
2436 }
0c715baa 2437 }
a23b6845 2438 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2439 {
2440 /* For the non-shared case, discard space for relocs against
2441 symbols which turn out to need copy relocs or are not
2442 dynamic. */
2443
f5385ebf
AM		 2444 if (!h->non_got_ref
2445 && ((h->def_dynamic
2446 && !h->def_regular)
ebe50bae 2447 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2448 && (h->root.type == bfd_link_hash_undefweak
2449 || h->root.type == bfd_link_hash_undefined))))
2450 {
2451 /* Make sure this symbol is output as a dynamic symbol.
2452 Undefined weak syms won't yet be marked as dynamic. */
2453 if (h->dynindx == -1
f5385ebf 2454 && !h->forced_local)
0c715baa 2455 {
c152c796 2456 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2457 return FALSE;
0c715baa 2458 }
5a15f56f 2459
0c715baa
AM		 2460 /* If that succeeded, we know we'll be keeping all the
2461 relocs. */
2462 if (h->dynindx != -1)
2463 goto keep;
2464 }
2465
2466 eh->dyn_relocs = NULL;
2467
ec338859 2468 keep: ;
5a15f56f
AM		 2469 }
2470
0c715baa
AM		 2471 /* Finally, allocate space. */
2472 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2473 {
e7c33416
NC		 2474 asection *sreloc;
2475
cbe950e9 2476 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2477
2478 BFD_ASSERT (sreloc != NULL);
eea6121a 2479 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2480 }
2481
b34976b6 2482 return TRUE;
6725bdbf
AM		 2483}
2484
c25bc9fc
L		 2485/* Allocate space in .plt, .got and associated reloc sections for
2486 local dynamic relocs. */
2487
2488static bfd_boolean
2489elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2490{
2491 struct elf_link_hash_entry *h
2492 = (struct elf_link_hash_entry *) *slot;
2493
2494 if (h->type != STT_GNU_IFUNC
2495 || !h->def_regular
2496 || !h->ref_regular
2497 || !h->forced_local
2498 || h->root.type != bfd_link_hash_defined)
2499 abort ();
2500
2501 return elf_i386_allocate_dynrelocs (h, inf);
2502}
2503
0c715baa
AM		 2504/* Find any dynamic relocs that apply to read-only sections. */
2505
b34976b6 2506static bfd_boolean
eb4ff4d6 2507elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2508{
2509 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2510 struct elf_dyn_relocs *p;
0c715baa 2511
aa715242
L		 2512 /* Skip local IFUNC symbols. */
2513 if (h->forced_local && h->type == STT_GNU_IFUNC)
2514 return TRUE;
2515
0c715baa
AM		 2516 eh = (struct elf_i386_link_hash_entry *) h;
2517 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2518 {
2519 asection *s = p->sec->output_section;
2520
2521 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2522 {
2523 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2524
2525 info->flags |= DF_TEXTREL;
2526
b70321a2
L		 2527 if (info->warn_shared_textrel && info->shared)
2528 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
2529 p->sec->owner, h->root.root.string,
2530 p->sec);
2531
0c715baa 2532 /* Not an error, just cut short the traversal. */
b34976b6 2533 return FALSE;
0c715baa
AM		 2534 }
2535 }
b34976b6 2536 return TRUE;
0c715baa
AM		 2537}
2538
daa67607
L		 2539/* Convert
2540 mov foo@GOT(%reg), %reg
2541 to
2542 lea foo@GOTOFF(%reg), %reg
2543 with the local symbol, foo. */
2544
2545static bfd_boolean
2546elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
2547 struct bfd_link_info *link_info)
2548{
2549 Elf_Internal_Shdr *symtab_hdr;
2550 Elf_Internal_Rela *internal_relocs;
2551 Elf_Internal_Rela *irel, *irelend;
2552 bfd_byte *contents;
2553 struct elf_i386_link_hash_table *htab;
2554 bfd_boolean changed_contents;
2555 bfd_boolean changed_relocs;
2556 bfd_signed_vma *local_got_refcounts;
2557
2558 /* Don't even try to convert non-ELF outputs. */
2559 if (!is_elf_hash_table (link_info->hash))
2560 return FALSE;
2561
fbdc86d9 2562 /* Nothing to do if there are no codes, no relocations or no output. */
daa67607 2563 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
fbdc86d9
L		 2564 || sec->reloc_count == 0
2565 || discarded_section (sec))
daa67607
L		 2566 return TRUE;
2567
2568 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2569
2570 /* Load the relocations for this section. */
2571 internal_relocs = (_bfd_elf_link_read_relocs
2572 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2573 link_info->keep_memory));
2574 if (internal_relocs == NULL)
2575 return FALSE;
2576
2577 htab = elf_i386_hash_table (link_info);
2578 changed_contents = FALSE;
2579 changed_relocs = FALSE;
2580 local_got_refcounts = elf_local_got_refcounts (abfd);
2581
2582 /* Get the section contents. */
2583 if (elf_section_data (sec)->this_hdr.contents != NULL)
2584 contents = elf_section_data (sec)->this_hdr.contents;
2585 else
2586 {
2587 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2588 goto error_return;
2589 }
2590
2591 irelend = internal_relocs + sec->reloc_count;
2592 for (irel = internal_relocs; irel < irelend; irel++)
2593 {
2594 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2595 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2596 unsigned int indx;
2597 struct elf_link_hash_entry *h;
2598
2599 if (r_type != R_386_GOT32)
2600 continue;
2601
2602 /* Get the symbol referred to by the reloc. */
2603 if (r_symndx < symtab_hdr->sh_info)
2604 {
2605 Elf_Internal_Sym *isym;
2606
2607 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2608 abfd, r_symndx);
2609
2610 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2611 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
2612 && bfd_get_8 (input_bfd,
2613 contents + irel->r_offset - 2) == 0x8b)
2614 {
2615 bfd_put_8 (output_bfd, 0x8d,
2616 contents + irel->r_offset - 2);
2617 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2618 if (local_got_refcounts != NULL
2619 && local_got_refcounts[r_symndx] > 0)
2620 local_got_refcounts[r_symndx] -= 1;
2621 changed_contents = TRUE;
2622 changed_relocs = TRUE;
2623 }
2624 continue;
2625 }
2626
2627 indx = r_symndx - symtab_hdr->sh_info;
2628 h = elf_sym_hashes (abfd)[indx];
2629 BFD_ASSERT (h != NULL);
2630
2631 while (h->root.type == bfd_link_hash_indirect
2632 || h->root.type == bfd_link_hash_warning)
2633 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2634
3f65f599
L		 2635 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
2636 optimizing _DYNAMIC since ld.so may use its link-time address. */
daa67607
L		 2637 if (h->def_regular
2638 && h->type != STT_GNU_IFUNC
9637f6ef 2639 && h != htab->elf.hdynamic
daa67607
L		 2640 && SYMBOL_REFERENCES_LOCAL (link_info, h)
2641 && bfd_get_8 (input_bfd,
2642 contents + irel->r_offset - 2) == 0x8b)
2643 {
2644 bfd_put_8 (output_bfd, 0x8d,
2645 contents + irel->r_offset - 2);
2646 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2647 if (h->got.refcount > 0)
2648 h->got.refcount -= 1;
2649 changed_contents = TRUE;
2650 changed_relocs = TRUE;
2651 }
2652 }
2653
2654 if (contents != NULL
2655 && elf_section_data (sec)->this_hdr.contents != contents)
2656 {
2657 if (!changed_contents && !link_info->keep_memory)
2658 free (contents);
2659 else
2660 {
2661 /* Cache the section contents for elf_link_input_bfd. */
2662 elf_section_data (sec)->this_hdr.contents = contents;
2663 }
2664 }
2665
2666 if (elf_section_data (sec)->relocs != internal_relocs)
2667 {
2668 if (!changed_relocs)
2669 free (internal_relocs);
2670 else
2671 elf_section_data (sec)->relocs = internal_relocs;
2672 }
2673
2674 return TRUE;
2675
2676 error_return:
2677 if (contents != NULL
2678 && elf_section_data (sec)->this_hdr.contents != contents)
2679 free (contents);
2680 if (internal_relocs != NULL
2681 && elf_section_data (sec)->relocs != internal_relocs)
2682 free (internal_relocs);
2683 return FALSE;
2684}
2685
252b5132
RH		 2686/* Set the sizes of the dynamic sections. */
2687
b34976b6 2688static bfd_boolean
23209a78 2689elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2690{
6725bdbf 2691 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2692 bfd *dynobj;
2693 asection *s;
b34976b6 2694 bfd_boolean relocs;
0c715baa 2695 bfd *ibfd;
252b5132 2696
6725bdbf 2697 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2698 if (htab == NULL)
2699 return FALSE;
ebe50bae 2700 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2701 if (dynobj == NULL)
2702 abort ();
252b5132 2703
ebe50bae 2704 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2705 {
2706 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2707 if (info->executable)
252b5132 2708 {
3d4d4302 2709 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 2710 if (s == NULL)
2711 abort ();
eea6121a 2712 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2713 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2714 }
161d71a6 2715 }
6725bdbf 2716
0c715baa
AM		 2717 /* Set up .got offsets for local syms, and space for local dynamic
2718 relocs. */
2719 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 2720 {
2721 bfd_signed_vma *local_got;
2722 bfd_signed_vma *end_local_got;
13ae64f3 2723 char *local_tls_type;
67a4f2b7 2724 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2725 bfd_size_type locsymcount;
2726 Elf_Internal_Shdr *symtab_hdr;
2727 asection *srel;
6725bdbf 2728
0ffa91dd 2729 if (! is_i386_elf (ibfd))
161d71a6 2730 continue;
6725bdbf 2731
0c715baa
AM		 2732 for (s = ibfd->sections; s != NULL; s = s->next)
2733 {
e03a8ed8 2734 struct elf_dyn_relocs *p;
0c715baa 2735
daa67607
L		 2736 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2737 return FALSE;
2738
e03a8ed8 2739 for (p = ((struct elf_dyn_relocs *)
e81d3500 2740 elf_section_data (s)->local_dynrel);
ec338859
AM		 2741 p != NULL;
2742 p = p->next)
0c715baa 2743 {
ec338859
AM		 2744 if (!bfd_is_abs_section (p->sec)
2745 && bfd_is_abs_section (p->sec->output_section))
2746 {
2747 /* Input section has been discarded, either because
2748 it is a copy of a linkonce section or due to
2749 linker script /DISCARD/, so we'll be discarding
2750 the relocs too. */
2751 }
23209a78 2752 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2753 && strcmp (p->sec->output_section->name,
2754 ".tls_vars") == 0)
2755 {
2756 /* Relocations in vxworks .tls_vars sections are
2757 handled specially by the loader. */
2758 }
248866a8 2759 else if (p->count != 0)
ec338859
AM		 2760 {
2761 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2762 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2763 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2764 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2765 {
2766 info->flags |= DF_TEXTREL;
2767 if (info->warn_shared_textrel && info->shared)
2768 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
2769 p->sec->owner, p->sec);
b70321a2 2770 }
ec338859 2771 }
0c715baa
AM		 2772 }
2773 }
2774
2775 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2776 if (!local_got)
2777 continue;
6725bdbf 2778
0ffa91dd 2779 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2780 locsymcount = symtab_hdr->sh_info;
2781 end_local_got = local_got + locsymcount;
13ae64f3 2782 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2783 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2784 s = htab->elf.sgot;
2785 srel = htab->elf.srelgot;
67a4f2b7
AO		 2786 for (; local_got < end_local_got;
2787 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2788 {
67a4f2b7 2789 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2790 if (*local_got > 0)
6725bdbf 2791 {
67a4f2b7
AO		 2792 if (GOT_TLS_GDESC_P (*local_tls_type))
2793 {
6de2ae4a 2794 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2795 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2796 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2797 *local_got = (bfd_vma) -2;
2798 }
2799 if (! GOT_TLS_GDESC_P (*local_tls_type)
2800 || GOT_TLS_GD_P (*local_tls_type))
2801 {
2802 *local_got = s->size;
2803 s->size += 4;
2804 if (GOT_TLS_GD_P (*local_tls_type)
2805 || *local_tls_type == GOT_TLS_IE_BOTH)
2806 s->size += 4;
2807 }
13ae64f3 2808 if (info->shared
67a4f2b7 2809 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2810 || (*local_tls_type & GOT_TLS_IE))
2811 {
2812 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2813 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2814 else if (GOT_TLS_GD_P (*local_tls_type)
2815 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2816 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2817 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2818 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2819 }
6725bdbf 2820 }
161d71a6
L		 2821 else
2822 *local_got = (bfd_vma) -1;
6725bdbf 2823 }
252b5132 2824 }
6725bdbf 2825
13ae64f3
JJ		 2826 if (htab->tls_ldm_got.refcount > 0)
2827 {
2828 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2829 relocs. */
6de2ae4a
L		 2830 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2831 htab->elf.sgot->size += 8;
2832 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2833 }
2834 else
2835 htab->tls_ldm_got.offset = -1;
2836
0c715baa
AM		 2837 /* Allocate global sym .plt and .got entries, and space for global
2838 sym dynamic relocs. */
eb4ff4d6 2839 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2840
c25bc9fc
L		 2841 /* Allocate .plt and .got entries, and space for local symbols. */
2842 htab_traverse (htab->loc_hash_table,
2843 elf_i386_allocate_local_dynrelocs,
2844 info);
2845
67a4f2b7
AO		 2846 /* For every jump slot reserved in the sgotplt, reloc_count is
2847 incremented. However, when we reserve space for TLS descriptors,
2848 it's not incremented, so in order to compute the space reserved
2849 for them, it suffices to multiply the reloc count by the jump
e1f98742 2850 slot size.
caa0075c 2851
e1f98742
L		 2852 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2853 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2854 if (htab->elf.srelplt)
e1f98742
L		 2855 {
2856 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2857 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2858 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2859 }
2860 else if (htab->elf.irelplt)
2861 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2862
67a4f2b7 2863
a7b16ceb
L		 2864 if (htab->elf.sgotplt)
2865 {
2866 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2867 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 2868 if ((htab->elf.hgot == NULL
2869 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 2870 && (htab->elf.sgotplt->size
2871 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2872 && (htab->elf.splt == NULL
2873 || htab->elf.splt->size == 0)
2874 && (htab->elf.sgot == NULL
2875 || htab->elf.sgot->size == 0)
2876 && (htab->elf.iplt == NULL
2877 || htab->elf.iplt->size == 0)
2878 && (htab->elf.igotplt == NULL
2879 || htab->elf.igotplt->size == 0))
2880 htab->elf.sgotplt->size = 0;
2881 }
2882
9a2a56cc
AM		 2883
2884 if (htab->plt_eh_frame != NULL
2885 && htab->elf.splt != NULL
2886 && htab->elf.splt->size != 0
2887 && !bfd_is_abs_section (htab->elf.splt->output_section)
2888 && _bfd_elf_eh_frame_present (info))
2889 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
2890
5a15f56f
AM		 2891 /* We now have determined the sizes of the various dynamic sections.
2892 Allocate memory for them. */
b34976b6 2893 relocs = FALSE;
252b5132
RH		 2894 for (s = dynobj->sections; s != NULL; s = s->next)
2895 {
eac338cf
PB		 2896 bfd_boolean strip_section = TRUE;
2897
252b5132
RH		 2898 if ((s->flags & SEC_LINKER_CREATED) == 0)
2899 continue;
2900
6de2ae4a 2901 if (s == htab->elf.splt
9a2a56cc 2902 || s == htab->elf.sgot)
252b5132 2903 {
6725bdbf
AM		 2904 /* Strip this section if we don't need it; see the
2905 comment below. */
eac338cf
PB		 2906 /* We'd like to strip these sections if they aren't needed, but if
2907 we've exported dynamic symbols from them we must leave them.
2908 It's too late to tell BFD to get rid of the symbols. */
2909
7325306f 2910 if (htab->elf.hplt != NULL)
eac338cf 2911 strip_section = FALSE;
252b5132 2912 }
9a2a56cc
AM		 2913 else if (s == htab->elf.sgotplt
2914 || s == htab->elf.iplt
2915 || s == htab->elf.igotplt
2916 || s == htab->plt_eh_frame
2917 || s == htab->sdynbss)
2918 {
2919 /* Strip these too. */
2920 }
0112cd26 2921 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2922 {
6de2ae4a
L		 2923 if (s->size != 0
2924 && s != htab->elf.srelplt
2925 && s != htab->srelplt2)
b34976b6 2926 relocs = TRUE;
252b5132 2927
0ac8d2ca
AM		 2928 /* We use the reloc_count field as a counter if we need
2929 to copy relocs into the output file. */
5ae0bfb6 2930 s->reloc_count = 0;
252b5132 2931 }
6725bdbf 2932 else
252b5132
RH		 2933 {
2934 /* It's not one of our sections, so don't allocate space. */
2935 continue;
2936 }
2937
c456f082 2938 if (s->size == 0)
252b5132 2939 {
0ac8d2ca
AM		 2940 /* If we don't need this section, strip it from the
2941 output file. This is mostly to handle .rel.bss and
2942 .rel.plt. We must create both sections in
2943 create_dynamic_sections, because they must be created
2944 before the linker maps input sections to output
2945 sections. The linker does that before
2946 adjust_dynamic_symbol is called, and it is that
2947 function which decides whether anything needs to go
2948 into these sections. */
c456f082
AM		 2949 if (strip_section)
2950 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2951 continue;
2952 }
2953
c456f082
AM		 2954 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2955 continue;
2956
f69da49f
AM		 2957 /* Allocate memory for the section contents. We use bfd_zalloc
2958 here in case unused entries are not reclaimed before the
2959 section's contents are written out. This should not happen,
2960 but this way if it does, we get a R_386_NONE reloc instead
2961 of garbage. */
a50b1753 2962 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 2963 if (s->contents == NULL)
b34976b6 2964 return FALSE;
252b5132
RH		 2965 }
2966
e41b3a13 2967 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 2968 && htab->plt_eh_frame->contents != NULL)
2969 {
2970 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
2971 sizeof (elf_i386_eh_frame_plt));
2972 bfd_put_32 (dynobj, htab->elf.splt->size,
2973 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
2974 }
e41b3a13 2975
ebe50bae 2976 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2977 {
2978 /* Add some entries to the .dynamic section. We fill in the
2979 values later, in elf_i386_finish_dynamic_sections, but we
2980 must add the entries now so that we get the correct size for
2981 the .dynamic section. The DT_DEBUG entry is filled in by the
2982 dynamic linker and used by the debugger. */
dc810e39 2983#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2984 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2985
36af4a4e 2986 if (info->executable)
252b5132 2987 {
dc810e39 2988 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2989 return FALSE;
252b5132
RH		 2990 }
2991
6de2ae4a 2992 if (htab->elf.splt->size != 0)
252b5132 2993 {
dc810e39
AM		 2994 if (!add_dynamic_entry (DT_PLTGOT, 0)
2995 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2996 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2997 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2998 return FALSE;
252b5132
RH		 2999 }
3000
3001 if (relocs)
3002 {
dc810e39
AM		 3003 if (!add_dynamic_entry (DT_REL, 0)
3004 || !add_dynamic_entry (DT_RELSZ, 0)
3005 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3006 return FALSE;
252b5132 3007
0c715baa
AM		 3008 /* If any dynamic relocs apply to a read-only section,
3009 then we need a DT_TEXTREL entry. */
248866a8 3010 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3011 elf_link_hash_traverse (&htab->elf,
3012 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3013
3014 if ((info->flags & DF_TEXTREL) != 0)
3015 {
3016 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3017 return FALSE;
0c715baa 3018 }
252b5132 3019 }
23209a78 3020 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3021 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3022 return FALSE;
252b5132 3023 }
dc810e39 3024#undef add_dynamic_entry
252b5132 3025
b34976b6 3026 return TRUE;
252b5132
RH		 3027}
3028
67a4f2b7
AO		 3029static bfd_boolean
3030elf_i386_always_size_sections (bfd *output_bfd,
3031 struct bfd_link_info *info)
3032{
3033 asection *tls_sec = elf_hash_table (info)->tls_sec;
3034
3035 if (tls_sec)
3036 {
3037 struct elf_link_hash_entry *tlsbase;
3038
3039 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3040 "_TLS_MODULE_BASE_",
3041 FALSE, FALSE, FALSE);
3042
3043 if (tlsbase && tlsbase->type == STT_TLS)
3044 {
4dfe6ac6 3045 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3046 struct bfd_link_hash_entry *bh = NULL;
3047 const struct elf_backend_data *bed
3048 = get_elf_backend_data (output_bfd);
3049
4dfe6ac6
NC		 3050 htab = elf_i386_hash_table (info);
3051 if (htab == NULL)
3052 return FALSE;
3053
67a4f2b7
AO		 3054 if (!(_bfd_generic_link_add_one_symbol
3055 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3056 tls_sec, 0, NULL, FALSE,
3057 bed->collect, &bh)))
3058 return FALSE;
9f03412a 3059
4dfe6ac6 3060 htab->tls_module_base = bh;
9f03412a 3061
67a4f2b7
AO		 3062 tlsbase = (struct elf_link_hash_entry *)bh;
3063 tlsbase->def_regular = 1;
3064 tlsbase->other = STV_HIDDEN;
3065 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3066 }
3067 }
3068
3069 return TRUE;
3070}
3071
38701953
AM		 3072/* Set the correct type for an x86 ELF section. We do this by the
3073 section name, which is a hack, but ought to work. */
3074
b34976b6 3075static bfd_boolean
55fd94b0
AM		 3076elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3077 Elf_Internal_Shdr *hdr,
3078 asection *sec)
38701953 3079{
91d6fa6a 3080 const char *name;
38701953
AM		 3081
3082 name = bfd_get_section_name (abfd, sec);
3083
3084 /* This is an ugly, but unfortunately necessary hack that is
3085 needed when producing EFI binaries on x86. It tells
3086 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3087 containing ELF relocation info. We need this hack in order to
3088 be able to generate ELF binaries that can be translated into
3089 EFI applications (which are essentially COFF objects). Those
3090 files contain a COFF ".reloc" section inside an ELFNN object,
3091 which would normally cause BFD to segfault because it would
3092 attempt to interpret this section as containing relocation
3093 entries for section "oc". With this hack enabled, ".reloc"
3094 will be treated as a normal data section, which will avoid the
3095 segfault. However, you won't be able to create an ELFNN binary
3096 with a section named "oc" that needs relocations, but that's
3097 the kind of ugly side-effects you get when detecting section
3098 types based on their names... In practice, this limitation is
3099 unlikely to bite. */
3100 if (strcmp (name, ".reloc") == 0)
3101 hdr->sh_type = SHT_PROGBITS;
3102
b34976b6 3103 return TRUE;
38701953
AM		 3104}
3105
9f03412a
AO		 3106/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3107 executables. Rather than setting it to the beginning of the TLS
3108 section, we have to set it to the end. This function may be called
3109 multiple times, it is idempotent. */
3110
3111static void
eb4ff4d6 3112elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3113{
4dfe6ac6 3114 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3115 struct bfd_link_hash_entry *base;
3116
3117 if (!info->executable)
3118 return;
3119
4dfe6ac6
NC		 3120 htab = elf_i386_hash_table (info);
3121 if (htab == NULL)
3122 return;
9f03412a 3123
4dfe6ac6
NC		 3124 base = htab->tls_module_base;
3125 if (base == NULL)
9f03412a
AO		 3126 return;
3127
4dfe6ac6 3128 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3129}
3130
13ae64f3
JJ		 3131/* Return the base VMA address which should be subtracted from real addresses
3132 when resolving @dtpoff relocation.
3133 This is PT_TLS segment p_vaddr. */
3134
3135static bfd_vma
eb4ff4d6 3136elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3137{
e1918d23
AM		 3138 /* If tls_sec is NULL, we should have signalled an error already. */
3139 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3140 return 0;
e1918d23 3141 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3142}
3143
3144/* Return the relocation value for @tpoff relocation
3145 if STT_TLS virtual address is ADDRESS. */
3146
3147static bfd_vma
eb4ff4d6 3148elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3149{
e1918d23 3150 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3151 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3152 bfd_vma static_tls_size;
13ae64f3 3153
e1918d23
AM		 3154 /* If tls_sec is NULL, we should have signalled an error already. */
3155 if (htab->tls_sec == NULL)
6a30718d 3156 return 0;
7dc98aea
RO		 3157
3158 /* Consider special static TLS alignment requirements. */
3159 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3160 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3161}
3162
252b5132
RH		 3163/* Relocate an i386 ELF section. */
3164
b34976b6 3165static bfd_boolean
55fd94b0
AM		 3166elf_i386_relocate_section (bfd *output_bfd,
3167 struct bfd_link_info *info,
3168 bfd *input_bfd,
3169 asection *input_section,
3170 bfd_byte *contents,
3171 Elf_Internal_Rela *relocs,
3172 Elf_Internal_Sym *local_syms,
3173 asection **local_sections)
252b5132 3174{
6725bdbf 3175 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3176 Elf_Internal_Shdr *symtab_hdr;
3177 struct elf_link_hash_entry **sym_hashes;
3178 bfd_vma *local_got_offsets;
67a4f2b7 3179 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3180 Elf_Internal_Rela *rel;
3181 Elf_Internal_Rela *relend;
3348747a 3182 bfd_boolean is_vxworks_tls;
25e762b9 3183 unsigned plt_entry_size;
252b5132 3184
0ffa91dd 3185 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3186
6725bdbf 3187 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3188 if (htab == NULL)
3189 return FALSE;
0ffa91dd 3190 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3191 sym_hashes = elf_sym_hashes (input_bfd);
3192 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3193 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3194 /* We have to handle relocations in vxworks .tls_vars sections
3195 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3196 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3197 && info->shared
3348747a
NS		 3198 && !strcmp (input_section->output_section->name,
3199 ".tls_vars"));
252b5132 3200
eb4ff4d6 3201 elf_i386_set_tls_module_base (info);
9f03412a 3202
25e762b9
RM		 3203 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3204
252b5132
RH		 3205 rel = relocs;
3206 relend = relocs + input_section->reloc_count;
3207 for (; rel < relend; rel++)
3208 {
13ae64f3 3209 unsigned int r_type;
252b5132
RH		 3210 reloc_howto_type *howto;
3211 unsigned long r_symndx;
3212 struct elf_link_hash_entry *h;
3213 Elf_Internal_Sym *sym;
3214 asection *sec;
67a4f2b7 3215 bfd_vma off, offplt;
252b5132 3216 bfd_vma relocation;
b34976b6 3217 bfd_boolean unresolved_reloc;
252b5132 3218 bfd_reloc_status_type r;
1b452ec6 3219 unsigned int indx;
13ae64f3 3220 int tls_type;
1788fc08 3221 bfd_vma st_size;
252b5132
RH		 3222
3223 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3224 if (r_type == R_386_GNU_VTINHERIT
3225 || r_type == R_386_GNU_VTENTRY)
252b5132 3226 continue;
dc47f327 3227
55fd94b0 3228 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3229 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3230 >= R_386_ext - R_386_standard)
3231 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3232 >= R_386_irelative - R_386_ext))
252b5132 3233 {
6ba842b6 3234 (*_bfd_error_handler)
d003868e
AM		 3235 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3236 input_bfd, input_section, r_type);
252b5132 3237 bfd_set_error (bfd_error_bad_value);
b34976b6 3238 return FALSE;
252b5132 3239 }
1b452ec6 3240 howto = elf_howto_table + indx;
252b5132
RH		 3241
3242 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3243 h = NULL;
3244 sym = NULL;
3245 sec = NULL;
b34976b6 3246 unresolved_reloc = FALSE;
252b5132
RH		 3247 if (r_symndx < symtab_hdr->sh_info)
3248 {
3249 sym = local_syms + r_symndx;
3250 sec = local_sections[r_symndx];
3251 relocation = (sec->output_section->vma
3252 + sec->output_offset
3253 + sym->st_value);
1788fc08 3254 st_size = sym->st_size;
ab96bf03
AM		 3255
3256 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3257 && ((sec->flags & SEC_MERGE) != 0
3258 || (info->relocatable
3259 && sec->output_offset != 0)))
f8df10f4 3260 {
f8df10f4 3261 bfd_vma addend;
4a335f3d 3262 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3263
4a335f3d 3264 switch (howto->size)
f8df10f4 3265 {
4a335f3d
AM		 3266 case 0:
3267 addend = bfd_get_8 (input_bfd, where);
3268 if (howto->pc_relative)
3269 {
3270 addend = (addend ^ 0x80) - 0x80;
3271 addend += 1;
3272 }
3273 break;
3274 case 1:
3275 addend = bfd_get_16 (input_bfd, where);
3276 if (howto->pc_relative)
3277 {
3278 addend = (addend ^ 0x8000) - 0x8000;
3279 addend += 2;
3280 }
3281 break;
3282 case 2:
3283 addend = bfd_get_32 (input_bfd, where);
3284 if (howto->pc_relative)
3285 {
3286 addend = (addend ^ 0x80000000) - 0x80000000;
3287 addend += 4;
3288 }
3289 break;
3290 default:
3291 abort ();
f8df10f4
JJ		 3292 }
3293
ab96bf03
AM		 3294 if (info->relocatable)
3295 addend += sec->output_offset;
3296 else
3297 {
3298 asection *msec = sec;
3299 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3300 addend);
3301 addend -= relocation;
3302 addend += msec->output_section->vma + msec->output_offset;
3303 }
4a335f3d
AM		 3304
3305 switch (howto->size)
3306 {
3307 case 0:
16a10388 3308 /* FIXME: overflow checks. */
4a335f3d
AM		 3309 if (howto->pc_relative)
3310 addend -= 1;
3311 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3312 break;
3313 case 1:
3314 if (howto->pc_relative)
3315 addend -= 2;
3316 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3317 break;
3318 case 2:
3319 if (howto->pc_relative)
3320 addend -= 4;
3321 bfd_put_32 (input_bfd, addend, where);
3322 break;
3323 }
f8df10f4 3324 }
1f85278f
L		 3325 else if (!info->relocatable
3326 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3327 {
3328 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3329 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3330 FALSE);
c25bc9fc
L		 3331 if (h == NULL)
3332 abort ();
3333
23209a78 3334 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3335 h->root.u.def.value = sym->st_value;
3336 h->root.u.def.section = sec;
3337 }
252b5132
RH		 3338 }
3339 else
3340 {
3d540e93 3341 bfd_boolean warned ATTRIBUTE_UNUSED;
ffb2e45b 3342
b2a8e766
AM		 3343 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3344 r_symndx, symtab_hdr, sym_hashes,
3345 h, sec, relocation,
3346 unresolved_reloc, warned);
1788fc08 3347 st_size = h->size;
252b5132
RH		 3348 }
3349
dbaa2011 3350 if (sec != NULL && discarded_section (sec))
0672748a 3351 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3352 rel, 1, relend, howto, 0, contents);
9635fe29 3353
ab96bf03
AM		 3354 if (info->relocatable)
3355 continue;
3356
cbe950e9
L		 3357 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3358 it here if it is defined in a non-shared object. */
3359 if (h != NULL
3360 && h->type == STT_GNU_IFUNC
3361 && h->def_regular)
3362 {
3363 asection *plt, *gotplt, *base_got;
3364 bfd_vma plt_index;
4c544807 3365 const char *name;
cbe950e9
L		 3366
3367 if ((input_section->flags & SEC_ALLOC) == 0
3368 || h->plt.offset == (bfd_vma) -1)
3369 abort ();
3370
3371 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3372 if (htab->elf.splt != NULL)
cbe950e9 3373 {
6de2ae4a
L		 3374 plt = htab->elf.splt;
3375 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3376 }
3377 else
3378 {
6de2ae4a
L		 3379 plt = htab->elf.iplt;
3380 gotplt = htab->elf.igotplt;
cbe950e9
L		 3381 }
3382
3383 relocation = (plt->output_section->vma
3384 + plt->output_offset + h->plt.offset);
3385
3386 switch (r_type)
3387 {
3388 default:
4c544807
L		 3389 if (h->root.root.string)
3390 name = h->root.root.string;
3391 else
3392 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3393 NULL);
cbe950e9
L		 3394 (*_bfd_error_handler)
3395 (_("%B: relocation %s against STT_GNU_IFUNC "
3396 "symbol `%s' isn't handled by %s"), input_bfd,
3397 elf_howto_table[r_type].name,
4c544807 3398 name, __FUNCTION__);
cbe950e9
L		 3399 bfd_set_error (bfd_error_bad_value);
3400 return FALSE;
3401
3402 case R_386_32:
710ab287 3403 /* Generate dynamic relcoation only when there is a
c293fa49 3404 non-GOT reference in a shared object. */
710ab287
L		 3405 if (info->shared && h->non_got_ref)
3406 {
3407 Elf_Internal_Rela outrel;
710ab287
L		 3408 asection *sreloc;
3409 bfd_vma offset;
3410
c25bc9fc
L		 3411 /* Need a dynamic relocation to get the real function
3412 adddress. */
710ab287
L		 3413 offset = _bfd_elf_section_offset (output_bfd,
3414 info,
3415 input_section,
3416 rel->r_offset);
3417 if (offset == (bfd_vma) -1
3418 || offset == (bfd_vma) -2)
3419 abort ();
3420
3421 outrel.r_offset = (input_section->output_section->vma
3422 + input_section->output_offset
3423 + offset);
3424
3425 if (h->dynindx == -1
44c4ea11
L		 3426 || h->forced_local
3427 || info->executable)
710ab287
L		 3428 {
3429 /* This symbol is resolved locally. */
56b8aada
L		 3430 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3431 bfd_put_32 (output_bfd,
3432 (h->root.u.def.value
3433 + h->root.u.def.section->output_section->vma
3434 + h->root.u.def.section->output_offset),
3435 contents + offset);
710ab287
L		 3436 }
3437 else
56b8aada 3438 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3439
6de2ae4a 3440 sreloc = htab->elf.irelifunc;
59d6ffb2 3441 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3442
3443 /* If this reloc is against an external symbol, we
3444 do not want to fiddle with the addend. Otherwise,
3445 we need to include the symbol value so that it
3446 becomes an addend for the dynamic reloc. For an
3447 internal symbol, we have updated addend. */
56b8aada 3448 continue;
710ab287 3449 }
d59a60e9 3450 /* FALLTHROUGH */
cbe950e9
L		 3451 case R_386_PC32:
3452 case R_386_PLT32:
3453 goto do_relocation;
3454
3455 case R_386_GOT32:
6de2ae4a 3456 base_got = htab->elf.sgot;
cbe950e9
L		 3457 off = h->got.offset;
3458
7afd84dc 3459 if (base_got == NULL)
cbe950e9
L		 3460 abort ();
3461
7afd84dc 3462 if (off == (bfd_vma) -1)
cbe950e9 3463 {
7afd84dc
L		 3464 /* We can't use h->got.offset here to save state, or
3465 even just remember the offset, as finish_dynamic_symbol
3466 would use that as offset into .got. */
6bbec505 3467
6de2ae4a 3468 if (htab->elf.splt != NULL)
7afd84dc 3469 {
25e762b9 3470 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3471 off = (plt_index + 3) * 4;
6de2ae4a 3472 base_got = htab->elf.sgotplt;
7afd84dc 3473 }
cbe950e9
L		 3474 else
3475 {
25e762b9 3476 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3477 off = plt_index * 4;
6de2ae4a 3478 base_got = htab->elf.igotplt;
7afd84dc
L		 3479 }
3480
3481 if (h->dynindx == -1
3482 || h->forced_local
3483 || info->symbolic)
3484 {
3485 /* This references the local defitionion. We must
3486 initialize this entry in the global offset table.
3487 Since the offset must always be a multiple of 8,
3488 we use the least significant bit to record
3489 whether we have initialized it already.
3490
3491 When doing a dynamic link, we create a .rela.got
3492 relocation entry to initialize the value. This
3493 is done in the finish_dynamic_symbol routine. */
3494 if ((off & 1) != 0)
3495 off &= ~1;
3496 else
3497 {
3498 bfd_put_32 (output_bfd, relocation,
3499 base_got->contents + off);
3500 h->got.offset |= 1;
3501 }
cbe950e9 3502 }
cbe950e9 3503
7afd84dc 3504 relocation = off;
cbe950e9 3505
7afd84dc 3506 /* Adjust for static executables. */
6de2ae4a 3507 if (htab->elf.splt == NULL)
7afd84dc
L		 3508 relocation += gotplt->output_offset;
3509 }
3510 else
0018b0a3
L		 3511 {
3512 relocation = (base_got->output_section->vma
3513 + base_got->output_offset + off
3514 - gotplt->output_section->vma
3515 - gotplt->output_offset);
3516 /* Adjust for static executables. */
6de2ae4a 3517 if (htab->elf.splt == NULL)
0018b0a3
L		 3518 relocation += gotplt->output_offset;
3519 }
3520
cbe950e9
L		 3521 goto do_relocation;
3522
3523 case R_386_GOTOFF:
3524 relocation -= (gotplt->output_section->vma
3525 + gotplt->output_offset);
3526 goto do_relocation;
3527 }
3528 }
3529
252b5132
RH		 3530 switch (r_type)
3531 {
3532 case R_386_GOT32:
3533 /* Relocation is to the entry for this symbol in the global
3534 offset table. */
6de2ae4a 3535 if (htab->elf.sgot == NULL)
ffb2e45b 3536 abort ();
252b5132
RH		 3537
3538 if (h != NULL)
3539 {
b34976b6 3540 bfd_boolean dyn;
252b5132
RH		 3541
3542 off = h->got.offset;
ebe50bae 3543 dyn = htab->elf.dynamic_sections_created;
26e41594 3544 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3545 || (info->shared
586119b3 3546 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3547 || (ELF_ST_VISIBILITY (h->other)
3548 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3549 {
3550 /* This is actually a static link, or it is a
3551 -Bsymbolic link and the symbol is defined
3552 locally, or the symbol was forced to be local
3553 because of a version file. We must initialize
3554 this entry in the global offset table. Since the
3555 offset must always be a multiple of 4, we use the
3556 least significant bit to record whether we have
3557 initialized it already.
3558
3559 When doing a dynamic link, we create a .rel.got
3560 relocation entry to initialize the value. This
3561 is done in the finish_dynamic_symbol routine. */
3562 if ((off & 1) != 0)
3563 off &= ~1;
3564 else
3565 {
3566 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3567 htab->elf.sgot->contents + off);
252b5132
RH		 3568 h->got.offset |= 1;
3569 }
3570 }
8c694914 3571 else
b34976b6 3572 unresolved_reloc = FALSE;
252b5132
RH		 3573 }
3574 else
3575 {
ffb2e45b
AM		 3576 if (local_got_offsets == NULL)
3577 abort ();
252b5132
RH		 3578
3579 off = local_got_offsets[r_symndx];
3580
3581 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3582 the least significant bit to record whether we have
3583 already generated the necessary reloc. */
252b5132
RH		 3584 if ((off & 1) != 0)
3585 off &= ~1;
3586 else
3587 {
6725bdbf 3588 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3589 htab->elf.sgot->contents + off);
252b5132
RH		 3590
3591 if (info->shared)
3592 {
947216bf
AM		 3593 asection *s;
3594 Elf_Internal_Rela outrel;
252b5132 3595
6de2ae4a 3596 s = htab->elf.srelgot;
947216bf 3597 if (s == NULL)
ffb2e45b 3598 abort ();
252b5132 3599
6de2ae4a
L		 3600 outrel.r_offset = (htab->elf.sgot->output_section->vma
3601 + htab->elf.sgot->output_offset
252b5132
RH		 3602 + off);
3603 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 3604 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 3605 }
3606
3607 local_got_offsets[r_symndx] |= 1;
3608 }
252b5132
RH		 3609 }
3610
ffb2e45b
AM		 3611 if (off >= (bfd_vma) -2)
3612 abort ();
3613
6de2ae4a
L		 3614 relocation = htab->elf.sgot->output_section->vma
3615 + htab->elf.sgot->output_offset + off
3616 - htab->elf.sgotplt->output_section->vma
3617 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3618 break;
3619
3620 case R_386_GOTOFF:
3621 /* Relocation is relative to the start of the global offset
3622 table. */
3623
90f487df
L		 3624 /* Check to make sure it isn't a protected function symbol
3625 for shared library since it may not be local when used
41bed6dd
L		 3626 as function address. We also need to make sure that a
3627 symbol is defined locally. */
3628 if (info->shared && h)
90f487df 3629 {
41bed6dd
L		 3630 if (!h->def_regular)
3631 {
3632 const char *v;
3633
3634 switch (ELF_ST_VISIBILITY (h->other))
3635 {
3636 case STV_HIDDEN:
3637 v = _("hidden symbol");
3638 break;
3639 case STV_INTERNAL:
3640 v = _("internal symbol");
3641 break;
3642 case STV_PROTECTED:
3643 v = _("protected symbol");
3644 break;
3645 default:
3646 v = _("symbol");
3647 break;
3648 }
3649
3650 (*_bfd_error_handler)
3651 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3652 input_bfd, v, h->root.root.string);
3653 bfd_set_error (bfd_error_bad_value);
3654 return FALSE;
3655 }
3656 else if (!info->executable
bdb892b9 3657 && !SYMBOLIC_BIND (info, h)
41bed6dd
L		 3658 && h->type == STT_FUNC
3659 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3660 {
3661 (*_bfd_error_handler)
3662 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3663 input_bfd, h->root.root.string);
3664 bfd_set_error (bfd_error_bad_value);
3665 return FALSE;
3666 }
90f487df
L		 3667 }
3668
8c37241b
JJ		 3669 /* Note that sgot is not involved in this
3670 calculation. We always want the start of .got.plt. If we
3671 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3672 permitted by the ABI, we might have to change this
3673 calculation. */
6de2ae4a
L		 3674 relocation -= htab->elf.sgotplt->output_section->vma
3675 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3676 break;
3677
3678 case R_386_GOTPC:
3679 /* Use global offset table as symbol value. */
6de2ae4a
L		 3680 relocation = htab->elf.sgotplt->output_section->vma
3681 + htab->elf.sgotplt->output_offset;
b34976b6 3682 unresolved_reloc = FALSE;
252b5132
RH		 3683 break;
3684
3685 case R_386_PLT32:
3686 /* Relocation is to the entry for this symbol in the
3687 procedure linkage table. */
3688
dd5724d5 3689 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3690 without using the procedure linkage table. */
252b5132
RH		 3691 if (h == NULL)
3692 break;
3693
dd5724d5 3694 if (h->plt.offset == (bfd_vma) -1
6de2ae4a 3695 || htab->elf.splt == NULL)
252b5132
RH		 3696 {
3697 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3698 happens when statically linking PIC code, or when
3699 using -Bsymbolic. */
252b5132
RH		 3700 break;
3701 }
3702
6de2ae4a
L		 3703 relocation = (htab->elf.splt->output_section->vma
3704 + htab->elf.splt->output_offset
252b5132 3705 + h->plt.offset);
b34976b6 3706 unresolved_reloc = FALSE;
252b5132
RH		 3707 break;
3708
1788fc08 3709 case R_386_SIZE32:
1788fc08
L		 3710 /* Set to symbol size. */
3711 relocation = st_size;
3bea1fcb
L		 3712 if (h && h->type == STT_TLS && st_size != 0)
3713 {
3714 /* Resolve size relocation against non-zero TLS symbol. */
3715 unresolved_reloc = FALSE;
3716 break;
3717 }
1788fc08
L		 3718 /* Fall through. */
3719
252b5132
RH		 3720 case R_386_32:
3721 case R_386_PC32:
3348747a
NS		 3722 if ((input_section->flags & SEC_ALLOC) == 0
3723 || is_vxworks_tls)
ec338859
AM		 3724 break;
3725
12d0ee4a 3726 if ((info->shared
ef5aade5
L		 3727 && (h == NULL
3728 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3729 || h->root.type != bfd_link_hash_undefweak)
1788fc08 3730 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3731 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3732 || (ELIMINATE_COPY_RELOCS
3733 && !info->shared
12d0ee4a
AM		 3734 && h != NULL
3735 && h->dynindx != -1
f5385ebf
AM		 3736 && !h->non_got_ref
3737 && ((h->def_dynamic
3738 && !h->def_regular)
28d0b90e 3739 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3740 || h->root.type == bfd_link_hash_undefined)))
252b5132 3741 {
947216bf 3742 Elf_Internal_Rela outrel;
b34976b6 3743 bfd_boolean skip, relocate;
0c715baa 3744 asection *sreloc;
252b5132
RH		 3745
3746 /* When generating a shared object, these relocations
3747 are copied into the output file to be resolved at run
3748 time. */
3749
b34976b6
AM		 3750 skip = FALSE;
3751 relocate = FALSE;
252b5132 3752
c629eae0
JJ		 3753 outrel.r_offset =
3754 _bfd_elf_section_offset (output_bfd, info, input_section,
3755 rel->r_offset);
3756 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3757 skip = TRUE;
0bb2d96a 3758 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3759 skip = TRUE, relocate = TRUE;
252b5132
RH		 3760 outrel.r_offset += (input_section->output_section->vma
3761 + input_section->output_offset);
3762
3763 if (skip)
0bb2d96a 3764 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3765 else if (h != NULL
3766 && h->dynindx != -1
3767 && (r_type == R_386_PC32
3768 || !info->shared
55255dae 3769 || !SYMBOLIC_BIND (info, h)
f5385ebf 3770 || !h->def_regular))
0bb2d96a 3771 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3772 else
3773 {
5a15f56f 3774 /* This symbol is local, or marked to become local. */
b34976b6 3775 relocate = TRUE;
5a15f56f 3776 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3777 }
3778
cbe950e9 3779 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3780
62d78908
L		 3781 if (sreloc == NULL || sreloc->contents == NULL)
3782 {
3783 r = bfd_reloc_notsupported;
3784 goto check_relocation_error;
3785 }
0c715baa 3786
59d6ffb2 3787 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 3788
3789 /* If this reloc is against an external symbol, we do
3790 not want to fiddle with the addend. Otherwise, we
3791 need to include the symbol value so that it becomes
3792 an addend for the dynamic reloc. */
0f88be7a 3793 if (! relocate)
252b5132
RH		 3794 continue;
3795 }
252b5132
RH		 3796 break;
3797
37e55690 3798 case R_386_TLS_IE:
1d85728f 3799 if (!info->executable)
37e55690 3800 {
947216bf 3801 Elf_Internal_Rela outrel;
37e55690 3802 asection *sreloc;
37e55690
JJ		 3803
3804 outrel.r_offset = rel->r_offset
3805 + input_section->output_section->vma
3806 + input_section->output_offset;
3807 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3808 sreloc = elf_section_data (input_section)->sreloc;
3809 if (sreloc == NULL)
3810 abort ();
59d6ffb2 3811 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3812 }
3813 /* Fall through */
3814
13ae64f3 3815 case R_386_TLS_GD:
67a4f2b7
AO		 3816 case R_386_TLS_GOTDESC:
3817 case R_386_TLS_DESC_CALL:
13ae64f3 3818 case R_386_TLS_IE_32:
37e55690 3819 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3820 tls_type = GOT_UNKNOWN;
3821 if (h == NULL && local_got_offsets)
3822 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3823 else if (h != NULL)
142411ca 3824 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3825 if (tls_type == GOT_TLS_IE)
3826 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3827
3828 if (! elf_i386_tls_transition (info, input_bfd,
3829 input_section, contents,
3830 symtab_hdr, sym_hashes,
3831 &r_type, tls_type, rel,
4c544807 3832 relend, h, r_symndx))
142411ca 3833 return FALSE;
13ae64f3
JJ		 3834
3835 if (r_type == R_386_TLS_LE_32)
3836 {
82e51918 3837 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3838 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3839 {
142411ca 3840 unsigned int type;
13ae64f3
JJ		 3841 bfd_vma roff;
3842
3843 /* GD->LE transition. */
13ae64f3 3844 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3845 if (type == 0x04)
3846 {
3847 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3848 Change it into:
3849 movl %gs:0, %eax; subl $foo@tpoff, %eax
3850 (6 byte form of subl). */
13ae64f3
JJ		 3851 memcpy (contents + rel->r_offset - 3,
3852 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3853 roff = rel->r_offset + 5;
13ae64f3
JJ		 3854 }
3855 else
3856 {
142411ca
L		 3857 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3858 Change it into:
3859 movl %gs:0, %eax; subl $foo@tpoff, %eax
3860 (6 byte form of subl). */
3861 memcpy (contents + rel->r_offset - 2,
3862 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3863 roff = rel->r_offset + 6;
13ae64f3 3864 }
eb4ff4d6 3865 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3866 contents + roff);
a3fadc9a 3867 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 3868 rel++;
3869 continue;
3870 }
67a4f2b7
AO		 3871 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3872 {
3873 /* GDesc -> LE transition.
3874 It's originally something like:
3875 leal x@tlsdesc(%ebx), %eax
3876
3877 leal x@ntpoff, %eax
3878
3879 Registers other than %eax may be set up here. */
3880
142411ca 3881 unsigned int val;
67a4f2b7
AO		 3882 bfd_vma roff;
3883
67a4f2b7 3884 roff = rel->r_offset;
67a4f2b7 3885 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3886
3887 /* Now modify the instruction as appropriate. */
3888 /* aoliva FIXME: remove the above and xor the byte
3889 below with 0x86. */
3890 bfd_put_8 (output_bfd, val ^ 0x86,
3891 contents + roff - 1);
eb4ff4d6 3892 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 3893 contents + roff);
3894 continue;
3895 }
3896 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3897 {
3898 /* GDesc -> LE transition.
3899 It's originally:
3900 call *(%eax)
3901 Turn it into:
142411ca 3902 xchg %ax,%ax */
67a4f2b7 3903
67a4f2b7 3904 bfd_vma roff;
6bbec505 3905
67a4f2b7 3906 roff = rel->r_offset;
10efb593 3907 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3908 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3909 continue;
3910 }
37e55690 3911 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 3912 {
142411ca 3913 unsigned int val;
13ae64f3
JJ		 3914
3915 /* IE->LE transition:
37e55690
JJ		 3916 Originally it can be one of:
3917 movl foo, %eax
3918 movl foo, %reg
3919 addl foo, %reg
3920 We change it into:
3921 movl $foo, %eax
3922 movl $foo, %reg
3923 addl $foo, %reg. */
37e55690 3924 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 3925 if (val == 0xa1)
3926 {
3927 /* movl foo, %eax. */
55fd94b0
AM		 3928 bfd_put_8 (output_bfd, 0xb8,
3929 contents + rel->r_offset - 1);
37e55690 3930 }
299bf759 3931 else
37e55690 3932 {
142411ca
L		 3933 unsigned int type;
3934
55fd94b0
AM		 3935 type = bfd_get_8 (input_bfd,
3936 contents + rel->r_offset - 2);
299bf759 3937 switch (type)
26e41594 3938 {
299bf759
L		 3939 case 0x8b:
3940 /* movl */
299bf759
L		 3941 bfd_put_8 (output_bfd, 0xc7,
3942 contents + rel->r_offset - 2);
3943 bfd_put_8 (output_bfd,
3944 0xc0 | ((val >> 3) & 7),
3945 contents + rel->r_offset - 1);
3946 break;
3947 case 0x03:
3948 /* addl */
299bf759
L		 3949 bfd_put_8 (output_bfd, 0x81,
3950 contents + rel->r_offset - 2);
3951 bfd_put_8 (output_bfd,
3952 0xc0 | ((val >> 3) & 7),
3953 contents + rel->r_offset - 1);
3954 break;
3955 default:
3956 BFD_FAIL ();
3957 break;
26e41594 3958 }
37e55690 3959 }
eb4ff4d6 3960 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3961 contents + rel->r_offset);
3962 continue;
3963 }
3964 else
3965 {
3966 unsigned int val, type;
3967
3968 /* {IE_32,GOTIE}->LE transition:
3969 Originally it can be one of:
13ae64f3 3970 subl foo(%reg1), %reg2
13ae64f3 3971 movl foo(%reg1), %reg2
37e55690 3972 addl foo(%reg1), %reg2
13ae64f3
JJ		 3973 We change it into:
3974 subl $foo, %reg2
37e55690
JJ		 3975 movl $foo, %reg2 (6 byte form)
3976 addl $foo, %reg2. */
13ae64f3
JJ		 3977 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3978 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 3979 if (type == 0x8b)
3980 {
3981 /* movl */
13ae64f3
JJ		 3982 bfd_put_8 (output_bfd, 0xc7,
3983 contents + rel->r_offset - 2);
3984 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3985 contents + rel->r_offset - 1);
3986 }
3987 else if (type == 0x2b)
3988 {
3989 /* subl */
13ae64f3
JJ		 3990 bfd_put_8 (output_bfd, 0x81,
3991 contents + rel->r_offset - 2);
3992 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3993 contents + rel->r_offset - 1);
3994 }
37e55690
JJ		 3995 else if (type == 0x03)
3996 {
3997 /* addl */
3998 bfd_put_8 (output_bfd, 0x81,
3999 contents + rel->r_offset - 2);
4000 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4001 contents + rel->r_offset - 1);
4002 }
13ae64f3
JJ		 4003 else
4004 BFD_FAIL ();
37e55690 4005 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4006 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4007 contents + rel->r_offset);
4008 else
eb4ff4d6 4009 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4010 contents + rel->r_offset);
13ae64f3
JJ		 4011 continue;
4012 }
4013 }
4014
6de2ae4a 4015 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4016 abort ();
4017
4018 if (h != NULL)
67a4f2b7
AO		 4019 {
4020 off = h->got.offset;
4021 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4022 }
13ae64f3
JJ		 4023 else
4024 {
4025 if (local_got_offsets == NULL)
4026 abort ();
4027
4028 off = local_got_offsets[r_symndx];
67a4f2b7 4029 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4030 }
4031
4032 if ((off & 1) != 0)
4033 off &= ~1;
26e41594 4034 else
13ae64f3 4035 {
947216bf 4036 Elf_Internal_Rela outrel;
91d6fa6a 4037 int dr_type;
67a4f2b7 4038 asection *sreloc;
13ae64f3 4039
6de2ae4a 4040 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4041 abort ();
4042
67a4f2b7
AO		 4043 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4044
4045 if (GOT_TLS_GDESC_P (tls_type))
4046 {
59d6ffb2 4047 bfd_byte *loc;
67a4f2b7
AO		 4048 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4049 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4050 <= htab->elf.sgotplt->size);
4051 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4052 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4053 + offplt
4054 + htab->sgotplt_jump_table_size);
6de2ae4a 4055 sreloc = htab->elf.srelplt;
67a4f2b7 4056 loc = sreloc->contents;
5ae0bfb6
RS		 4057 loc += (htab->next_tls_desc_index++
4058 * sizeof (Elf32_External_Rel));
67a4f2b7 4059 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4060 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4061 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4062 if (indx == 0)
4063 {
4064 BFD_ASSERT (! unresolved_reloc);
4065 bfd_put_32 (output_bfd,
eb4ff4d6 4066 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4067 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4068 + htab->sgotplt_jump_table_size + 4);
4069 }
4070 else
4071 {
4072 bfd_put_32 (output_bfd, 0,
6de2ae4a 4073 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4074 + htab->sgotplt_jump_table_size + 4);
4075 }
4076 }
4077
6de2ae4a 4078 sreloc = htab->elf.srelgot;
67a4f2b7 4079
6de2ae4a
L		 4080 outrel.r_offset = (htab->elf.sgot->output_section->vma
4081 + htab->elf.sgot->output_offset + off);
13ae64f3 4082
67a4f2b7 4083 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4084 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4085 else if (GOT_TLS_GDESC_P (tls_type))
4086 goto dr_done;
37e55690
JJ		 4087 else if (tls_type == GOT_TLS_IE_POS)
4088 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4089 else
4090 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4091
37e55690 4092 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4093 bfd_put_32 (output_bfd,
4094 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4095 htab->elf.sgot->contents + off);
37e55690 4096 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4097 bfd_put_32 (output_bfd,
eb4ff4d6 4098 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4099 htab->elf.sgot->contents + off);
67a4f2b7 4100 else if (dr_type != R_386_TLS_DESC)
c366c25e 4101 bfd_put_32 (output_bfd, 0,
6de2ae4a 4102 htab->elf.sgot->contents + off);
13ae64f3 4103 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4104
59d6ffb2 4105 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4106
67a4f2b7 4107 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4108 {
4109 if (indx == 0)
4110 {
82e51918 4111 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4112 bfd_put_32 (output_bfd,
eb4ff4d6 4113 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4114 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4115 }
4116 else
4117 {
4118 bfd_put_32 (output_bfd, 0,
6de2ae4a 4119 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4120 outrel.r_info = ELF32_R_INFO (indx,
4121 R_386_TLS_DTPOFF32);
4122 outrel.r_offset += 4;
59d6ffb2 4123 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4124 }
4125 }
37e55690
JJ		 4126 else if (tls_type == GOT_TLS_IE_BOTH)
4127 {
4128 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4129 (indx == 0
4130 ? relocation - elf_i386_dtpoff_base (info)
4131 : 0),
6de2ae4a 4132 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4133 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4134 outrel.r_offset += 4;
59d6ffb2 4135 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4136 }
13ae64f3 4137
67a4f2b7 4138 dr_done:
13ae64f3
JJ		 4139 if (h != NULL)
4140 h->got.offset |= 1;
4141 else
4142 local_got_offsets[r_symndx] |= 1;
4143 }
4144
67a4f2b7
AO		 4145 if (off >= (bfd_vma) -2
4146 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4147 abort ();
67a4f2b7
AO		 4148 if (r_type == R_386_TLS_GOTDESC
4149 || r_type == R_386_TLS_DESC_CALL)
4150 {
4151 relocation = htab->sgotplt_jump_table_size + offplt;
4152 unresolved_reloc = FALSE;
4153 }
4154 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4155 {
6de2ae4a
L		 4156 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4157 + htab->elf.sgotplt->output_offset;
4158 relocation = htab->elf.sgot->output_section->vma
4159 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4160 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4161 && tls_type == GOT_TLS_IE_BOTH)
4162 relocation += 4;
4163 if (r_type == R_386_TLS_IE)
8c37241b 4164 relocation += g_o_t;
b34976b6 4165 unresolved_reloc = FALSE;
13ae64f3 4166 }
67a4f2b7 4167 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4168 {
4169 unsigned int val, type;
4170 bfd_vma roff;
4171
4172 /* GD->IE transition. */
13ae64f3 4173 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4174 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4175 if (type == 0x04)
4176 {
4177 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4178 Change it into:
4179 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4180 val >>= 3;
142411ca 4181 roff = rel->r_offset - 3;
13ae64f3
JJ		 4182 }
4183 else
4184 {
4185 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4186 Change it into:
4187 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4188 roff = rel->r_offset - 2;
4189 }
4190 memcpy (contents + roff,
4191 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4192 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4193 /* If foo is used only with foo@gotntpoff(%reg) and
4194 foo@indntpoff, but not with foo@gottpoff(%reg), change
4195 subl $foo@gottpoff(%reg), %eax
4196 into:
4197 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4198 if (tls_type == GOT_TLS_IE_POS)
4199 contents[roff + 6] = 0x03;
8c37241b 4200 bfd_put_32 (output_bfd,
6de2ae4a
L		 4201 htab->elf.sgot->output_section->vma
4202 + htab->elf.sgot->output_offset + off
4203 - htab->elf.sgotplt->output_section->vma
4204 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4205 contents + roff + 8);
4206 /* Skip R_386_PLT32. */
4207 rel++;
4208 continue;
4209 }
67a4f2b7
AO		 4210 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4211 {
4212 /* GDesc -> IE transition.
4213 It's originally something like:
4214 leal x@tlsdesc(%ebx), %eax
4215
4216 Change it to:
142411ca 4217 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4218 or:
4219 movl x@gottpoff(%ebx), %eax # before negl %eax
4220
4221 Registers other than %eax may be set up here. */
4222
67a4f2b7
AO		 4223 bfd_vma roff;
4224
4225 /* First, make sure it's a leal adding ebx to a 32-bit
4226 offset into any register, although it's probably
4227 almost always going to be eax. */
4228 roff = rel->r_offset;
67a4f2b7
AO		 4229
4230 /* Now modify the instruction as appropriate. */
4231 /* To turn a leal into a movl in the form we use it, it
4232 suffices to change the first byte from 0x8d to 0x8b.
4233 aoliva FIXME: should we decide to keep the leal, all
4234 we have to do is remove the statement below, and
4235 adjust the relaxation of R_386_TLS_DESC_CALL. */
4236 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4237
4238 if (tls_type == GOT_TLS_IE_BOTH)
4239 off += 4;
4240
4241 bfd_put_32 (output_bfd,
6de2ae4a
L		 4242 htab->elf.sgot->output_section->vma
4243 + htab->elf.sgot->output_offset + off
4244 - htab->elf.sgotplt->output_section->vma
4245 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4246 contents + roff);
4247 continue;
4248 }
4249 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4250 {
4251 /* GDesc -> IE transition.
4252 It's originally:
4253 call *(%eax)
4254
4255 Change it to:
142411ca 4256 xchg %ax,%ax
67a4f2b7
AO		 4257 or
4258 negl %eax
4259 depending on how we transformed the TLS_GOTDESC above.
4260 */
4261
67a4f2b7
AO		 4262 bfd_vma roff;
4263
67a4f2b7 4264 roff = rel->r_offset;
67a4f2b7
AO		 4265
4266 /* Now modify the instruction as appropriate. */
4267 if (tls_type != GOT_TLS_IE_NEG)
4268 {
10efb593
L		 4269 /* xchg %ax,%ax */
4270 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4271 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4272 }
4273 else
4274 {
4275 /* negl %eax */
4276 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4277 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4278 }
4279
4280 continue;
4281 }
4282 else
4283 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4284 break;
4285
4286 case R_386_TLS_LDM:
142411ca
L		 4287 if (! elf_i386_tls_transition (info, input_bfd,
4288 input_section, contents,
4289 symtab_hdr, sym_hashes,
4290 &r_type, GOT_UNKNOWN, rel,
4c544807 4291 relend, h, r_symndx))
142411ca 4292 return FALSE;
13ae64f3 4293
142411ca
L		 4294 if (r_type != R_386_TLS_LDM)
4295 {
13ae64f3 4296 /* LD->LE transition:
13ae64f3
JJ		 4297 leal foo(%reg), %eax; call ___tls_get_addr.
4298 We change it into:
4299 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4300 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4301 memcpy (contents + rel->r_offset - 2,
4302 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4303 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4304 rel++;
4305 continue;
4306 }
4307
6de2ae4a 4308 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4309 abort ();
4310
4311 off = htab->tls_ldm_got.offset;
4312 if (off & 1)
4313 off &= ~1;
4314 else
4315 {
947216bf 4316 Elf_Internal_Rela outrel;
13ae64f3 4317
6de2ae4a 4318 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4319 abort ();
4320
6de2ae4a
L		 4321 outrel.r_offset = (htab->elf.sgot->output_section->vma
4322 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4323
4324 bfd_put_32 (output_bfd, 0,
6de2ae4a 4325 htab->elf.sgot->contents + off);
13ae64f3 4326 bfd_put_32 (output_bfd, 0,
6de2ae4a 4327 htab->elf.sgot->contents + off + 4);
13ae64f3 4328 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4329 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4330 htab->tls_ldm_got.offset |= 1;
4331 }
6de2ae4a
L		 4332 relocation = htab->elf.sgot->output_section->vma
4333 + htab->elf.sgot->output_offset + off
4334 - htab->elf.sgotplt->output_section->vma
4335 - htab->elf.sgotplt->output_offset;
b34976b6 4336 unresolved_reloc = FALSE;
13ae64f3
JJ		 4337 break;
4338
4339 case R_386_TLS_LDO_32:
959b0961 4340 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4341 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4342 else
4343 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4344 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4345 break;
4346
4347 case R_386_TLS_LE_32:
13ae64f3 4348 case R_386_TLS_LE:
1d85728f 4349 if (!info->executable)
37e55690 4350 {
947216bf 4351 Elf_Internal_Rela outrel;
37e55690 4352 asection *sreloc;
37e55690
JJ		 4353
4354 outrel.r_offset = rel->r_offset
4355 + input_section->output_section->vma
4356 + input_section->output_offset;
4357 if (h != NULL && h->dynindx != -1)
4358 indx = h->dynindx;
4359 else
4360 indx = 0;
4361 if (r_type == R_386_TLS_LE_32)
4362 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4363 else
4364 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4365 sreloc = elf_section_data (input_section)->sreloc;
4366 if (sreloc == NULL)
4367 abort ();
59d6ffb2 4368 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4369 if (indx)
4370 continue;
4371 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4372 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4373 else
eb4ff4d6 4374 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4375 }
4376 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4377 relocation = elf_i386_tpoff (info, relocation);
37e55690 4378 else
eb4ff4d6 4379 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4380 break;
4381
252b5132
RH		 4382 default:
4383 break;
4384 }
4385
239e1f3a
AM		 4386 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4387 because such sections are not SEC_ALLOC and thus ld.so will
4388 not process them. */
8c694914 4389 if (unresolved_reloc
239e1f3a 4390 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4391 && h->def_dynamic)
4392 && _bfd_elf_section_offset (output_bfd, info, input_section,
4393 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4394 {
4395 (*_bfd_error_handler)
843fe662 4396 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4397 input_bfd,
4398 input_section,
6a30718d 4399 (long) rel->r_offset,
843fe662 4400 howto->name,
6a30718d 4401 h->root.root.string);
b34976b6 4402 return FALSE;
6a30718d 4403 }
83be169b 4404
cbe950e9 4405do_relocation:
252b5132
RH		 4406 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4407 contents, rel->r_offset,
55fd94b0 4408 relocation, 0);
252b5132 4409
62d78908 4410check_relocation_error:
cf5c0c5b 4411 if (r != bfd_reloc_ok)
252b5132 4412 {
cf5c0c5b 4413 const char *name;
ffb2e45b 4414
cf5c0c5b
AM		 4415 if (h != NULL)
4416 name = h->root.root.string;
4417 else
4418 {
4419 name = bfd_elf_string_from_elf_section (input_bfd,
4420 symtab_hdr->sh_link,
4421 sym->st_name);
4422 if (name == NULL)
b34976b6 4423 return FALSE;
cf5c0c5b
AM		 4424 if (*name == '\0')
4425 name = bfd_section_name (input_bfd, sec);
4426 }
ffb2e45b 4427
cf5c0c5b
AM		 4428 if (r == bfd_reloc_overflow)
4429 {
cf5c0c5b 4430 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4431 (info, (h ? &h->root : NULL), name, howto->name,
4432 (bfd_vma) 0, input_bfd, input_section,
4433 rel->r_offset)))
b34976b6 4434 return FALSE;
cf5c0c5b
AM		 4435 }
4436 else
4437 {
4438 (*_bfd_error_handler)
d003868e
AM		 4439 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4440 input_bfd, input_section,
cf5c0c5b 4441 (long) rel->r_offset, name, (int) r);
b34976b6 4442 return FALSE;
cf5c0c5b 4443 }
252b5132
RH		 4444 }
4445 }
4446
b34976b6 4447 return TRUE;
252b5132
RH		 4448}
4449
4450/* Finish up dynamic symbol handling. We set the contents of various
4451 dynamic sections here. */
4452
b34976b6 4453static bfd_boolean
55fd94b0
AM		 4454elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4455 struct bfd_link_info *info,
4456 struct elf_link_hash_entry *h,
4457 Elf_Internal_Sym *sym)
252b5132 4458{
6725bdbf 4459 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4460 unsigned plt_entry_size;
4461 const struct elf_i386_backend_data *abed;
252b5132 4462
6725bdbf 4463 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4464 if (htab == NULL)
4465 return FALSE;
252b5132 4466
25e762b9
RM		 4467 abed = get_elf_i386_backend_data (output_bfd);
4468 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4469
252b5132
RH		 4470 if (h->plt.offset != (bfd_vma) -1)
4471 {
252b5132
RH		 4472 bfd_vma plt_index;
4473 bfd_vma got_offset;
947216bf
AM		 4474 Elf_Internal_Rela rel;
4475 bfd_byte *loc;
cbe950e9
L		 4476 asection *plt, *gotplt, *relplt;
4477
4478 /* When building a static executable, use .iplt, .igot.plt and
4479 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4480 if (htab->elf.splt != NULL)
cbe950e9 4481 {
6de2ae4a
L		 4482 plt = htab->elf.splt;
4483 gotplt = htab->elf.sgotplt;
4484 relplt = htab->elf.srelplt;
cbe950e9
L		 4485 }
4486 else
4487 {
6de2ae4a
L		 4488 plt = htab->elf.iplt;
4489 gotplt = htab->elf.igotplt;
4490 relplt = htab->elf.irelplt;
cbe950e9 4491 }
252b5132
RH		 4492
4493 /* This symbol has an entry in the procedure linkage table. Set
4494 it up. */
4495
cbe950e9
L		 4496 if ((h->dynindx == -1
4497 && !((h->forced_local || info->executable)
4498 && h->def_regular
4499 && h->type == STT_GNU_IFUNC))
4500 || plt == NULL
4501 || gotplt == NULL
4502 || relplt == NULL)
cec7f46a 4503 abort ();
252b5132
RH		 4504
4505 /* Get the index in the procedure linkage table which
4506 corresponds to this symbol. This is the index of this symbol
4507 in all the symbols for which we are making plt entries. The
cbe950e9 4508 first entry in the procedure linkage table is reserved.
252b5132 4509
cbe950e9 4510 Get the offset into the .got table of the entry that
252b5132 4511 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4512 The first three are reserved.
6bbec505 4513
cbe950e9
L		 4514 For static executables, we don't reserve anything. */
4515
6de2ae4a 4516 if (plt == htab->elf.splt)
cbe950e9 4517 {
e1f98742
L		 4518 got_offset = h->plt.offset / plt_entry_size - 1;
4519 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4520 }
4521 else
4522 {
e1f98742
L		 4523 got_offset = h->plt.offset / plt_entry_size;
4524 got_offset = got_offset * 4;
cbe950e9 4525 }
252b5132
RH		 4526
4527 /* Fill in the entry in the procedure linkage table. */
4528 if (! info->shared)
4529 {
25e762b9
RM		 4530 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4531 abed->plt->plt_entry_size);
252b5132 4532 bfd_put_32 (output_bfd,
cbe950e9
L		 4533 (gotplt->output_section->vma
4534 + gotplt->output_offset
252b5132 4535 + got_offset),
25e762b9
RM		 4536 plt->contents + h->plt.offset
4537 + abed->plt->plt_got_offset);
eac338cf 4538
25e762b9 4539 if (abed->is_vxworks)
eac338cf
PB		 4540 {
4541 int s, k, reloc_index;
4542
4543 /* Create the R_386_32 relocation referencing the GOT
4544 for this PLT entry. */
4545
4546 /* S: Current slot number (zero-based). */
25e762b9
RM		 4547 s = ((h->plt.offset - abed->plt->plt_entry_size)
4548 / abed->plt->plt_entry_size);
eac338cf
PB		 4549 /* K: Number of relocations for PLTResolve. */
4550 if (info->shared)
4551 k = PLTRESOLVE_RELOCS_SHLIB;
4552 else
4553 k = PLTRESOLVE_RELOCS;
4554 /* Skip the PLTresolve relocations, and the relocations for
4555 the other PLT slots. */
4556 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4557 loc = (htab->srelplt2->contents + reloc_index
4558 * sizeof (Elf32_External_Rel));
4559
6de2ae4a
L		 4560 rel.r_offset = (htab->elf.splt->output_section->vma
4561 + htab->elf.splt->output_offset
eac338cf 4562 + h->plt.offset + 2),
7325306f 4563 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4564 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4565
4566 /* Create the R_386_32 relocation referencing the beginning of
4567 the PLT for this GOT entry. */
6de2ae4a
L		 4568 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4569 + htab->elf.sgotplt->output_offset
eac338cf 4570 + got_offset);
7325306f 4571 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4572 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4573 loc + sizeof (Elf32_External_Rel));
eac338cf 4574 }
252b5132
RH		 4575 }
4576 else
4577 {
25e762b9
RM		 4578 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4579 abed->plt->plt_entry_size);
252b5132 4580 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4581 plt->contents + h->plt.offset
4582 + abed->plt->plt_got_offset);
252b5132
RH		 4583 }
4584
252b5132
RH		 4585 /* Fill in the entry in the global offset table. */
4586 bfd_put_32 (output_bfd,
cbe950e9
L		 4587 (plt->output_section->vma
4588 + plt->output_offset
252b5132 4589 + h->plt.offset
25e762b9 4590 + abed->plt->plt_lazy_offset),
cbe950e9 4591 gotplt->contents + got_offset);
252b5132
RH		 4592
4593 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4594 rel.r_offset = (gotplt->output_section->vma
4595 + gotplt->output_offset
252b5132 4596 + got_offset);
cbe950e9
L		 4597 if (h->dynindx == -1
4598 || ((info->executable
4599 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4600 && h->def_regular
4601 && h->type == STT_GNU_IFUNC))
4602 {
4603 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4604 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4605 in the .got.plt section. */
4606 bfd_put_32 (output_bfd,
23209a78 4607 (h->root.u.def.value
cbe950e9
L		 4608 + h->root.u.def.section->output_section->vma
4609 + h->root.u.def.section->output_offset),
4610 gotplt->contents + got_offset);
4611 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4612 /* R_386_IRELATIVE comes last. */
4613 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4614 }
4615 else
e1f98742
L		 4616 {
4617 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4618 plt_index = htab->next_jump_slot_index++;
4619 }
cbe950e9 4620 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4621 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4622
e1f98742
L		 4623 /* Don't fill PLT entry for static executables. */
4624 if (plt == htab->elf.splt)
4625 {
4626 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4627 plt->contents + h->plt.offset
4628 + abed->plt->plt_reloc_offset);
4629 bfd_put_32 (output_bfd, - (h->plt.offset
4630 + abed->plt->plt_plt_offset + 4),
4631 plt->contents + h->plt.offset
4632 + abed->plt->plt_plt_offset);
4633 }
4634
f5385ebf 4635 if (!h->def_regular)
252b5132
RH		 4636 {
4637 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 4638 the .plt section. Leave the value if there were any
4639 relocations where pointer equality matters (this is a clue
51b64d56
AM		 4640 for the dynamic linker, to make function pointer
4641 comparisons work between an application and shared
c6585bbb
JJ		 4642 library), otherwise set it to zero. If a function is only
4643 called from a binary, there is no need to slow down
4644 shared libraries because of that. */
252b5132 4645 sym->st_shndx = SHN_UNDEF;
f5385ebf 4646 if (!h->pointer_equality_needed)
c6585bbb 4647 sym->st_value = 0;
252b5132
RH		 4648 }
4649 }
4650
13ae64f3 4651 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4652 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4653 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4654 {
947216bf 4655 Elf_Internal_Rela rel;
252b5132
RH		 4656
4657 /* This symbol has an entry in the global offset table. Set it
4658 up. */
4659
6de2ae4a 4660 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4661 abort ();
252b5132 4662
6de2ae4a
L		 4663 rel.r_offset = (htab->elf.sgot->output_section->vma
4664 + htab->elf.sgot->output_offset
dc810e39 4665 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4666
dd5724d5
AM		 4667 /* If this is a static link, or it is a -Bsymbolic link and the
4668 symbol is defined locally or was forced to be local because
4669 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4670 The entry in the global offset table will already have been
4671 initialized in the relocate_section function. */
710ab287 4672 if (h->def_regular
0018b0a3
L		 4673 && h->type == STT_GNU_IFUNC)
4674 {
710ab287
L		 4675 if (info->shared)
4676 {
4677 /* Generate R_386_GLOB_DAT. */
4678 goto do_glob_dat;
4679 }
4680 else
4681 {
cd2b2c10
L		 4682 asection *plt;
4683
710ab287
L		 4684 if (!h->pointer_equality_needed)
4685 abort ();
4686
4687 /* For non-shared object, we can't use .got.plt, which
4688 contains the real function addres if we need pointer
4689 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4690 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4691 bfd_put_32 (output_bfd,
4692 (plt->output_section->vma
4693 + plt->output_offset + h->plt.offset),
6de2ae4a 4694 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4695 return TRUE;
4696 }
0018b0a3
L		 4697 }
4698 else if (info->shared
4699 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4700 {
6725bdbf 4701 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4702 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4703 }
252b5132
RH		 4704 else
4705 {
dd5724d5 4706 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4707do_glob_dat:
6725bdbf 4708 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4709 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4710 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4711 }
4712
59d6ffb2 4713 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 4714 }
4715
f5385ebf 4716 if (h->needs_copy)
252b5132 4717 {
947216bf 4718 Elf_Internal_Rela rel;
252b5132
RH		 4719
4720 /* This symbol needs a copy reloc. Set it up. */
4721
ffb2e45b
AM		 4722 if (h->dynindx == -1
4723 || (h->root.type != bfd_link_hash_defined
4724 && h->root.type != bfd_link_hash_defweak)
4725 || htab->srelbss == NULL)
4726 abort ();
252b5132
RH		 4727
4728 rel.r_offset = (h->root.u.def.value
4729 + h->root.u.def.section->output_section->vma
4730 + h->root.u.def.section->output_offset);
4731 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 4732 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 4733 }
4734
b34976b6 4735 return TRUE;
252b5132
RH		 4736}
4737
c25bc9fc
L		 4738/* Finish up local dynamic symbol handling. We set the contents of
4739 various dynamic sections here. */
4740
4741static bfd_boolean
4742elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4743{
4744 struct elf_link_hash_entry *h
4745 = (struct elf_link_hash_entry *) *slot;
4746 struct bfd_link_info *info
23209a78 4747 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4748
4749 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4750 h, NULL);
4751}
4752
38701953
AM		 4753/* Used to decide how to sort relocs in an optimal manner for the
4754 dynamic linker, before writing them out. */
4755
4756static enum elf_reloc_type_class
55fd94b0 4757elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
38701953 4758{
55fd94b0 4759 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4760 {
4761 case R_386_RELATIVE:
4762 return reloc_class_relative;
4763 case R_386_JUMP_SLOT:
4764 return reloc_class_plt;
4765 case R_386_COPY:
4766 return reloc_class_copy;
4767 default:
4768 return reloc_class_normal;
4769 }
4770}
4771
252b5132
RH		 4772/* Finish up the dynamic sections. */
4773
b34976b6 4774static bfd_boolean
55fd94b0
AM		 4775elf_i386_finish_dynamic_sections (bfd *output_bfd,
4776 struct bfd_link_info *info)
252b5132 4777{
6725bdbf 4778 struct elf_i386_link_hash_table *htab;
252b5132 4779 bfd *dynobj;
252b5132 4780 asection *sdyn;
25e762b9 4781 const struct elf_i386_backend_data *abed;
252b5132 4782
6725bdbf 4783 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4784 if (htab == NULL)
4785 return FALSE;
4786
ebe50bae 4787 dynobj = htab->elf.dynobj;
3d4d4302 4788 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4789 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4790
ebe50bae 4791 if (htab->elf.dynamic_sections_created)
252b5132 4792 {
252b5132
RH		 4793 Elf32_External_Dyn *dyncon, *dynconend;
4794
6de2ae4a 4795 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4796 abort ();
252b5132
RH		 4797
4798 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4799 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4800 for (; dyncon < dynconend; dyncon++)
4801 {
4802 Elf_Internal_Dyn dyn;
51b64d56 4803 asection *s;
252b5132
RH		 4804
4805 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4806
4807 switch (dyn.d_tag)
4808 {
4809 default:
25e762b9
RM		 4810 if (abed->is_vxworks
4811 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 4812 break;
0ac8d2ca 4813 continue;
252b5132
RH		 4814
4815 case DT_PLTGOT:
6de2ae4a 4816 s = htab->elf.sgotplt;
8c37241b 4817 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 4818 break;
4819
252b5132 4820 case DT_JMPREL:
6de2ae4a 4821 s = htab->elf.srelplt;
6348e046 4822 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 4823 break;
4824
4825 case DT_PLTRELSZ:
6de2ae4a 4826 s = htab->elf.srelplt;
eea6121a 4827 dyn.d_un.d_val = s->size;
252b5132
RH		 4828 break;
4829
4830 case DT_RELSZ:
4831 /* My reading of the SVR4 ABI indicates that the
4832 procedure linkage table relocs (DT_JMPREL) should be
4833 included in the overall relocs (DT_REL). This is
4834 what Solaris does. However, UnixWare can not handle
4835 that case. Therefore, we override the DT_RELSZ entry
6348e046 4836 here to make it not include the JMPREL relocs. */
6de2ae4a 4837 s = htab->elf.srelplt;
6348e046
AM		 4838 if (s == NULL)
4839 continue;
eea6121a 4840 dyn.d_un.d_val -= s->size;
6348e046
AM		 4841 break;
4842
4843 case DT_REL:
4844 /* We may not be using the standard ELF linker script.
4845 If .rel.plt is the first .rel section, we adjust
4846 DT_REL to not include it. */
6de2ae4a 4847 s = htab->elf.srelplt;
6348e046
AM		 4848 if (s == NULL)
4849 continue;
4850 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4851 continue;
eea6121a 4852 dyn.d_un.d_ptr += s->size;
252b5132
RH		 4853 break;
4854 }
0ac8d2ca
AM		 4855
4856 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 4857 }
4858
4859 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 4860 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 4861 {
4862 if (info->shared)
eac338cf 4863 {
25e762b9
RM		 4864 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
4865 abed->plt->plt0_entry_size);
4866 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4867 abed->plt0_pad_byte,
4868 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 4869 }
252b5132
RH		 4870 else
4871 {
25e762b9
RM		 4872 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
4873 abed->plt->plt0_entry_size);
4874 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4875 abed->plt0_pad_byte,
4876 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 4877 bfd_put_32 (output_bfd,
6de2ae4a
L		 4878 (htab->elf.sgotplt->output_section->vma
4879 + htab->elf.sgotplt->output_offset
6725bdbf 4880 + 4),
25e762b9
RM		 4881 htab->elf.splt->contents
4882 + abed->plt->plt0_got1_offset);
252b5132 4883 bfd_put_32 (output_bfd,
6de2ae4a
L		 4884 (htab->elf.sgotplt->output_section->vma
4885 + htab->elf.sgotplt->output_offset
6725bdbf 4886 + 8),
25e762b9
RM		 4887 htab->elf.splt->contents
4888 + abed->plt->plt0_got2_offset);
eac338cf 4889
25e762b9 4890 if (abed->is_vxworks)
eac338cf
PB		 4891 {
4892 Elf_Internal_Rela rel;
7325306f 4893
eac338cf
PB		 4894 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4895 On IA32 we use REL relocations so the addend goes in
4896 the PLT directly. */
6de2ae4a
L		 4897 rel.r_offset = (htab->elf.splt->output_section->vma
4898 + htab->elf.splt->output_offset
25e762b9 4899 + abed->plt->plt0_got1_offset);
7325306f 4900 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4901 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4902 htab->srelplt2->contents);
4903 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 4904 rel.r_offset = (htab->elf.splt->output_section->vma
4905 + htab->elf.splt->output_offset
25e762b9 4906 + abed->plt->plt0_got2_offset);
7325306f 4907 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4908 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4909 htab->srelplt2->contents +
4910 sizeof (Elf32_External_Rel));
4911 }
252b5132
RH		 4912 }
4913
4914 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4915 really seem like the right value. */
6de2ae4a 4916 elf_section_data (htab->elf.splt->output_section)
6725bdbf 4917 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 4918
4919 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 4920 if (abed->is_vxworks && !info->shared)
eac338cf 4921 {
25e762b9
RM		 4922 int num_plts = (htab->elf.splt->size
4923 / abed->plt->plt_entry_size) - 1;
4c9b0de6 4924 unsigned char *p;
eac338cf
PB		 4925
4926 p = htab->srelplt2->contents;
4927 if (info->shared)
4928 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4929 else
4930 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4931
4932 for (; num_plts; num_plts--)
4933 {
4934 Elf_Internal_Rela rel;
4935 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4936 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4937 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4938 p += sizeof (Elf32_External_Rel);
4939
4940 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4941 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4942 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4943 p += sizeof (Elf32_External_Rel);
4944 }
4945 }
252b5132
RH		 4946 }
4947 }
4948
6de2ae4a 4949 if (htab->elf.sgotplt)
252b5132 4950 {
56d4289c
L		 4951 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4952 {
4953 (*_bfd_error_handler)
4954 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4955 return FALSE;
4956 }
4957
12d0ee4a 4958 /* Fill in the first three entries in the global offset table. */
6de2ae4a 4959 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 4960 {
4961 bfd_put_32 (output_bfd,
55fd94b0 4962 (sdyn == NULL ? 0
12d0ee4a 4963 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 4964 htab->elf.sgotplt->contents);
4965 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4966 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 4967 }
252b5132 4968
6de2ae4a 4969 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 4970 }
8c37241b 4971
e41b3a13 4972 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 4973 if (htab->plt_eh_frame != NULL
4974 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 4975 {
4976 if (htab->elf.splt != NULL
4977 && htab->elf.splt->size != 0
4978 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
4979 && htab->elf.splt->output_section != NULL
4980 && htab->plt_eh_frame->output_section != NULL)
4981 {
4982 bfd_vma plt_start = htab->elf.splt->output_section->vma;
4983 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
4984 + htab->plt_eh_frame->output_offset
4985 + PLT_FDE_START_OFFSET;
4986 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4987 htab->plt_eh_frame->contents
4988 + PLT_FDE_START_OFFSET);
4989 }
4990 if (htab->plt_eh_frame->sec_info_type
dbaa2011 4991 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 4992 {
4993 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4994 htab->plt_eh_frame,
4995 htab->plt_eh_frame->contents))
4996 return FALSE;
4997 }
4998 }
4999
6de2ae4a
L		 5000 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5001 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5002
c25bc9fc
L		 5003 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5004 htab_traverse (htab->loc_hash_table,
5005 elf_i386_finish_local_dynamic_symbol,
5006 info);
5007
b34976b6 5008 return TRUE;
252b5132
RH		 5009}
5010
4c45e5c9
JJ		 5011/* Return address for Ith PLT stub in section PLT, for relocation REL
5012 or (bfd_vma) -1 if it should not be included. */
5013
5014static bfd_vma
5015elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
5016 const arelent *rel ATTRIBUTE_UNUSED)
5017{
25e762b9 5018 return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
4c45e5c9
JJ		 5019}
5020
fdc90cb4
JJ		 5021/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5022
5023static bfd_boolean
5024elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5025{
5026 if (h->plt.offset != (bfd_vma) -1
5027 && !h->def_regular
5028 && !h->pointer_equality_needed)
5029 return FALSE;
5030
5031 return _bfd_elf_hash_symbol (h);
5032}
4c45e5c9 5033
d8045f23
NC		 5034/* Hook called by the linker routine which adds symbols from an object
5035 file. */
5036
5037static bfd_boolean
c16153ae 5038elf_i386_add_symbol_hook (bfd * abfd,
d8045f23
NC		 5039 struct bfd_link_info * info ATTRIBUTE_UNUSED,
5040 Elf_Internal_Sym * sym,
5041 const char ** namep ATTRIBUTE_UNUSED,
5042 flagword * flagsp ATTRIBUTE_UNUSED,
5043 asection ** secp ATTRIBUTE_UNUSED,
5044 bfd_vma * valp ATTRIBUTE_UNUSED)
5045{
c16153ae 5046 if ((abfd->flags & DYNAMIC) == 0
f64b2e8d
NC		 5047 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5048 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
5049 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC		 5050
5051 return TRUE;
5052}
5053
252b5132
RH		 5054#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
5055#define TARGET_LITTLE_NAME "elf32-i386"
5056#define ELF_ARCH bfd_arch_i386
ae95ffa6 5057#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5058#define ELF_MACHINE_CODE EM_386
5059#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5060
5061#define elf_backend_can_gc_sections 1
51b64d56 5062#define elf_backend_can_refcount 1
252b5132
RH		 5063#define elf_backend_want_got_plt 1
5064#define elf_backend_plt_readonly 1
5065#define elf_backend_want_plt_sym 0
5066#define elf_backend_got_header_size 12
e41b3a13 5067#define elf_backend_plt_alignment 4
252b5132 5068
8c29f035
AM		 5069/* Support RELA for objdump of prelink objects. */
5070#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5071#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5072
13ae64f3 5073#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5074
dd5724d5
AM		 5075#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5076#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
c25bc9fc 5077#define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
dd5724d5 5078#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5079#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM		 5080
5081#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5082#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5083#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5084#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5085#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5086#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5087#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5088#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5089#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5090#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5091#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5092#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5093#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5094#define elf_backend_relocate_section elf_i386_relocate_section
5095#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5096#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5097#define elf_backend_omit_section_dynsym \
5098 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 5099#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 5100#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23
NC		 5101#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
5102#undef elf_backend_post_process_headers
5103#define elf_backend_post_process_headers _bfd_elf_set_osabi
dd5724d5 5104
252b5132 5105#include "elf32-target.h"
2bc3c89a
AM		 5106
5107/* FreeBSD support. */
5108
5109#undef TARGET_LITTLE_SYM
5110#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
5111#undef TARGET_LITTLE_NAME
5112#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5113#undef ELF_OSABI
5114#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5115
5116/* The kernel recognizes executables as valid only if they carry a
5117 "FreeBSD" label in the ELF header. So we put this label on all
5118 executables and (for simplicity) also all other object files. */
5119
2bc3c89a 5120static void
d8045f23 5121elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5122{
d8045f23 5123 _bfd_elf_set_osabi (abfd, info);
2bc3c89a 5124
2bc3c89a
AM		 5125#ifdef OLD_FREEBSD_ABI_LABEL
5126 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5127 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 5128#endif
2bc3c89a
AM		 5129}
5130
5131#undef elf_backend_post_process_headers
d8045f23 5132#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5133#undef elf32_bed
5134#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5135
d8045f23
NC		 5136#undef elf_backend_add_symbol_hook
5137
2bc3c89a 5138#include "elf32-target.h"
eac338cf 5139
a6cc6b3b
RO		 5140/* Solaris 2. */
5141
5142#undef TARGET_LITTLE_SYM
5143#define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec
5144#undef TARGET_LITTLE_NAME
5145#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5146
5147/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5148 objects won't be recognized. */
5149#undef ELF_OSABI
5150
5151#undef elf32_bed
5152#define elf32_bed elf32_i386_sol2_bed
5153
7dc98aea
RO		 5154/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5155 boundary. */
5156#undef elf_backend_static_tls_alignment
5157#define elf_backend_static_tls_alignment 8
5158
a6cc6b3b
RO		 5159/* The Solaris 2 ABI requires a plt symbol on all platforms.
5160
5161 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5162 File, p.63. */
5163#undef elf_backend_want_plt_sym
5164#define elf_backend_want_plt_sym 1
5165
5166#include "elf32-target.h"
5167
a27e4371
RM		 5168/* Native Client support. */
5169
5170#undef TARGET_LITTLE_SYM
5171#define TARGET_LITTLE_SYM bfd_elf32_i386_nacl_vec
5172#undef TARGET_LITTLE_NAME
5173#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5174#undef elf32_bed
5175#define elf32_bed elf32_i386_nacl_bed
5176
5177#undef ELF_MAXPAGESIZE
5178#define ELF_MAXPAGESIZE 0x10000
5179
5180/* Restore defaults. */
5181#undef ELF_OSABI
5182#undef elf_backend_want_plt_sym
5183#define elf_backend_want_plt_sym 0
5184#undef elf_backend_post_process_headers
5185#define elf_backend_post_process_headers _bfd_elf_set_osabi
5186#undef elf_backend_static_tls_alignment
5187
5188/* NaCl uses substantially different PLT entries for the same effects. */
5189
5190#undef elf_backend_plt_alignment
5191#define elf_backend_plt_alignment 5
5192#define NACL_PLT_ENTRY_SIZE 64
5193#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5194
5195static const bfd_byte elf_i386_nacl_plt0_entry[] =
5196 {
5197 0xff, 0x35, /* pushl contents of address */
5198 0, 0, 0, 0, /* replaced with address of .got + 4. */
5199 0x8b, 0x0d, /* movl contents of address, %ecx */
5200 0, 0, 0, 0, /* replaced with address of .got + 8. */
5201 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5202 0xff, 0xe1 /* jmp *%ecx */
5203 };
5204
5205static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5206 {
5207 0x8b, 0x0d, /* movl contents of address, %ecx */
5208 0, 0, 0, 0, /* replaced with GOT slot address. */
5209 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5210 0xff, 0xe1, /* jmp *%ecx */
5211
5212 /* Pad to the next 32-byte boundary with nop instructions. */
5213 0x90,
5214 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5215 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5216
5217 /* Lazy GOT entries point here (32-byte aligned). */
5218 0x68, /* pushl immediate */
5219 0, 0, 0, 0, /* replaced with reloc offset. */
5220 0xe9, /* jmp relative */
5221 0, 0, 0, 0, /* replaced with offset to .plt. */
5222
5223 /* Pad to the next 32-byte boundary with nop instructions. */
5224 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5225 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5226 0x90, 0x90
5227 };
5228
5229static const bfd_byte
5230elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5231 {
5232 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5233 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5234 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5235 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5236
5237 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5238 so pad to that size with nop instructions. */
5239 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5240 };
5241
5242static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5243 {
5244 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5245 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5246 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5247 0xff, 0xe1, /* jmp *%ecx */
5248
5249 /* Pad to the next 32-byte boundary with nop instructions. */
5250 0x90,
5251 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5252 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5253
5254 /* Lazy GOT entries point here (32-byte aligned). */
5255 0x68, /* pushl immediate */
5256 0, 0, 0, 0, /* replaced with offset into relocation table. */
5257 0xe9, /* jmp relative */
5258 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5259
5260 /* Pad to the next 32-byte boundary with nop instructions. */
5261 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5262 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5263 0x90, 0x90
5264 };
5265
5266static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5267 {
5268#if (PLT_CIE_LENGTH != 20 \
5269 || PLT_FDE_LENGTH != 36 \
5270 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5271 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5272# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5273#endif
5274 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5275 0, 0, 0, 0, /* CIE ID */
5276 1, /* CIE version */
5277 'z', 'R', 0, /* Augmentation string */
5278 1, /* Code alignment factor */
5279 0x7c, /* Data alignment factor: -4 */
5280 8, /* Return address column */
5281 1, /* Augmentation size */
5282 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5283 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5284 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5285 DW_CFA_nop, DW_CFA_nop,
5286
5287 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5288 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5289 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5290 0, 0, 0, 0, /* .plt size goes here */
5291 0, /* Augmentation size */
5292 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5293 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5294 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5295 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5296 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5297 13, /* Block length */
5298 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5299 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5300 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5301 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5302 DW_CFA_nop, DW_CFA_nop
5303 };
5304
5305static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5306 {
5307 elf_i386_nacl_plt0_entry, /* plt0_entry */
5308 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5309 2, /* plt0_got1_offset */
5310 8, /* plt0_got2_offset */
5311 elf_i386_nacl_plt_entry, /* plt_entry */
5312 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5313 2, /* plt_got_offset */
5314 33, /* plt_reloc_offset */
5315 38, /* plt_plt_offset */
5316 32, /* plt_lazy_offset */
5317 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5318 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5319 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5320 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5321 };
5322
5323static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5324 {
5325 &elf_i386_nacl_plt, /* plt */
5326 0x90, /* plt0_pad_byte: nop insn */
5327 0, /* is_vxworks */
5328 };
5329
5330#undef elf_backend_arch_data
5331#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5332
5a68afcf
RM		 5333#undef elf_backend_modify_segment_map
5334#define elf_backend_modify_segment_map nacl_modify_segment_map
5335#undef elf_backend_modify_program_headers
5336#define elf_backend_modify_program_headers nacl_modify_program_headers
5337
a27e4371
RM		 5338#include "elf32-target.h"
5339
5a68afcf
RM		 5340/* Restore defaults. */
5341#undef elf_backend_modify_segment_map
5342#undef elf_backend_modify_program_headers
5343
eac338cf
PB		 5344/* VxWorks support. */
5345
5346#undef TARGET_LITTLE_SYM
5347#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
5348#undef TARGET_LITTLE_NAME
5349#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5350#undef ELF_OSABI
a27e4371
RM		 5351#undef elf_backend_plt_alignment
5352#define elf_backend_plt_alignment 4
eac338cf 5353
23209a78
RM		 5354static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5355 {
25e762b9 5356 &elf_i386_plt, /* plt */
23209a78
RM		 5357 0x90, /* plt0_pad_byte */
5358 1, /* is_vxworks */
5359 };
eac338cf 5360
23209a78
RM		 5361#undef elf_backend_arch_data
5362#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5363
13285a1b
AM		 5364#undef elf_backend_relocs_compatible
5365#undef elf_backend_post_process_headers
eac338cf
PB		 5366#undef elf_backend_add_symbol_hook
5367#define elf_backend_add_symbol_hook \
5368 elf_vxworks_add_symbol_hook
5369#undef elf_backend_link_output_symbol_hook
5370#define elf_backend_link_output_symbol_hook \
9c72ff84 5371 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5372#undef elf_backend_emit_relocs
5373#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5374#undef elf_backend_final_write_processing
5375#define elf_backend_final_write_processing \
5376 elf_vxworks_final_write_processing
7dc98aea 5377#undef elf_backend_static_tls_alignment
eac338cf
PB		 5378
5379/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5380 define it. */
5381#undef elf_backend_want_plt_sym
5382#define elf_backend_want_plt_sym 1
5383
5384#undef elf32_bed
5385#define elf32_bed elf32_i386_vxworks_bed
5386
5387#include "elf32-target.h"
GDB Binutils - Deliverables
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