projects / deliverable / binutils-gdb.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Revert the last change
[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,
61315175 3 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
9f973f28 4 Free Software Foundation, Inc.
252b5132 5
571fe01f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
571fe01f
NC		 8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
571fe01f 11 (at your option) any later version.
252b5132 12
571fe01f
NC		 13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
571fe01f
NC		 18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
cd123cb7
NC		 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
252b5132 22
252b5132 23#include "sysdep.h"
3db64b00 24#include "bfd.h"
252b5132
RH		 25#include "bfdlink.h"
26#include "libbfd.h"
27#include "elf-bfd.h"
5a68afcf 28#include "elf-nacl.h"
eac338cf 29#include "elf-vxworks.h"
142411ca 30#include "bfd_stdint.h"
c25bc9fc
L		 31#include "objalloc.h"
32#include "hashtab.h"
e41b3a13 33#include "dwarf2.h"
252b5132 34
55fd94b0
AM		 35/* 386 uses REL relocations instead of RELA. */
36#define USE_REL 1
252b5132
RH		 37
38#include "elf/i386.h"
39
40static reloc_howto_type elf_howto_table[]=
41{
b34976b6 42 HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
1b452ec6 43 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 44 TRUE, 0x00000000, 0x00000000, FALSE),
45 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 46 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 47 TRUE, 0xffffffff, 0xffffffff, FALSE),
48 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 49 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 50 TRUE, 0xffffffff, 0xffffffff, TRUE),
51 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 52 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 53 TRUE, 0xffffffff, 0xffffffff, FALSE),
54 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 55 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 56 TRUE, 0xffffffff, 0xffffffff, TRUE),
57 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 58 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 59 TRUE, 0xffffffff, 0xffffffff, FALSE),
60 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 61 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 62 TRUE, 0xffffffff, 0xffffffff, FALSE),
63 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 64 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 65 TRUE, 0xffffffff, 0xffffffff, FALSE),
66 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 67 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 68 TRUE, 0xffffffff, 0xffffffff, FALSE),
69 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 70 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 71 TRUE, 0xffffffff, 0xffffffff, FALSE),
72 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 73 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 74 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 75
dc47f327
AM		 76 /* We have a gap in the reloc numbers here.
77 R_386_standard counts the number up to this point, and
78 R_386_ext_offset is the value to subtract from a reloc type of
79 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 80#define R_386_standard (R_386_GOTPC + 1)
81#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 82
37e55690 83 /* These relocs are a GNU extension. */
b34976b6 84 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 85 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 86 TRUE, 0xffffffff, 0xffffffff, FALSE),
87 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 88 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 89 TRUE, 0xffffffff, 0xffffffff, FALSE),
90 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 91 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 92 TRUE, 0xffffffff, 0xffffffff, FALSE),
93 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 94 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 95 TRUE, 0xffffffff, 0xffffffff, FALSE),
96 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 97 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 98 TRUE, 0xffffffff, 0xffffffff, FALSE),
99 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 100 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 101 TRUE, 0xffffffff, 0xffffffff, FALSE),
102 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 103 bfd_elf_generic_reloc, "R_386_16",
b34976b6 104 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 105 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 106 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 107 TRUE, 0xffff, 0xffff, TRUE),
108 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 109 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 110 TRUE, 0xff, 0xff, FALSE),
111 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 112 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 113 TRUE, 0xff, 0xff, TRUE),
dc47f327 114
55fd94b0
AM		 115#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
116#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 117 /* These are common with Solaris TLS implementation. */
b34976b6 118 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 119 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 120 TRUE, 0xffffffff, 0xffffffff, FALSE),
121 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 122 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 123 TRUE, 0xffffffff, 0xffffffff, FALSE),
124 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 125 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 126 TRUE, 0xffffffff, 0xffffffff, FALSE),
127 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 128 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 129 TRUE, 0xffffffff, 0xffffffff, FALSE),
130 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 131 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 132 TRUE, 0xffffffff, 0xffffffff, FALSE),
133 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 134 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 135 TRUE, 0xffffffff, 0xffffffff, FALSE),
1788fc08
L		 136 HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
137 bfd_elf_generic_reloc, "R_386_SIZE32",
138 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 139 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
140 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
141 TRUE, 0xffffffff, 0xffffffff, FALSE),
142 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
143 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
144 FALSE, 0, 0, FALSE),
145 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_386_TLS_DESC",
147 TRUE, 0xffffffff, 0xffffffff, FALSE),
cbe950e9
L		 148 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_386_IRELATIVE",
150 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 151
152 /* Another gap. */
cbe950e9
L		 153#define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset)
154#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative)
252b5132
RH		 155
156/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 157 HOWTO (R_386_GNU_VTINHERIT, /* type */
158 0, /* rightshift */
159 2, /* size (0 = byte, 1 = short, 2 = long) */
160 0, /* bitsize */
b34976b6 161 FALSE, /* pc_relative */
252b5132
RH		 162 0, /* bitpos */
163 complain_overflow_dont, /* complain_on_overflow */
164 NULL, /* special_function */
165 "R_386_GNU_VTINHERIT", /* name */
b34976b6 166 FALSE, /* partial_inplace */
252b5132
RH		 167 0, /* src_mask */
168 0, /* dst_mask */
b34976b6 169 FALSE), /* pcrel_offset */
252b5132
RH		 170
171/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 172 HOWTO (R_386_GNU_VTENTRY, /* type */
173 0, /* rightshift */
174 2, /* size (0 = byte, 1 = short, 2 = long) */
175 0, /* bitsize */
b34976b6 176 FALSE, /* pc_relative */
252b5132
RH		 177 0, /* bitpos */
178 complain_overflow_dont, /* complain_on_overflow */
179 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
180 "R_386_GNU_VTENTRY", /* name */
b34976b6 181 FALSE, /* partial_inplace */
252b5132
RH		 182 0, /* src_mask */
183 0, /* dst_mask */
b34976b6 184 FALSE) /* pcrel_offset */
dc47f327 185
55fd94b0 186#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 187
188};
189
252b5132 190#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 191#define TRACE(str) \
192 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 193#else
194#define TRACE(str)
195#endif
196
197static reloc_howto_type *
55fd94b0
AM		 198elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
199 bfd_reloc_code_real_type code)
252b5132
RH		 200{
201 switch (code)
202 {
203 case BFD_RELOC_NONE:
204 TRACE ("BFD_RELOC_NONE");
55fd94b0 205 return &elf_howto_table[R_386_NONE];
252b5132
RH		 206
207 case BFD_RELOC_32:
208 TRACE ("BFD_RELOC_32");
55fd94b0 209 return &elf_howto_table[R_386_32];
252b5132
RH		 210
211 case BFD_RELOC_CTOR:
212 TRACE ("BFD_RELOC_CTOR");
55fd94b0 213 return &elf_howto_table[R_386_32];
252b5132
RH		 214
215 case BFD_RELOC_32_PCREL:
216 TRACE ("BFD_RELOC_PC32");
55fd94b0 217 return &elf_howto_table[R_386_PC32];
252b5132
RH		 218
219 case BFD_RELOC_386_GOT32:
220 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 221 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 222
223 case BFD_RELOC_386_PLT32:
224 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 225 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 226
227 case BFD_RELOC_386_COPY:
228 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 229 return &elf_howto_table[R_386_COPY];
252b5132
RH		 230
231 case BFD_RELOC_386_GLOB_DAT:
232 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 233 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 234
235 case BFD_RELOC_386_JUMP_SLOT:
236 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 237 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 238
239 case BFD_RELOC_386_RELATIVE:
240 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 241 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 242
243 case BFD_RELOC_386_GOTOFF:
244 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 245 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 246
247 case BFD_RELOC_386_GOTPC:
248 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 249 return &elf_howto_table[R_386_GOTPC];
252b5132 250
37e55690
JJ		 251 /* These relocs are a GNU extension. */
252 case BFD_RELOC_386_TLS_TPOFF:
253 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 254 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 255
256 case BFD_RELOC_386_TLS_IE:
257 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 258 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 259
260 case BFD_RELOC_386_TLS_GOTIE:
261 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 262 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 263
13ae64f3
JJ		 264 case BFD_RELOC_386_TLS_LE:
265 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 266 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 267
268 case BFD_RELOC_386_TLS_GD:
269 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 270 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 271
272 case BFD_RELOC_386_TLS_LDM:
273 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 274 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 275
252b5132
RH		 276 case BFD_RELOC_16:
277 TRACE ("BFD_RELOC_16");
55fd94b0 278 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 279
280 case BFD_RELOC_16_PCREL:
281 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 282 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 283
284 case BFD_RELOC_8:
285 TRACE ("BFD_RELOC_8");
55fd94b0 286 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 287
288 case BFD_RELOC_8_PCREL:
289 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 290 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 291
13ae64f3
JJ		 292 /* Common with Sun TLS implementation. */
293 case BFD_RELOC_386_TLS_LDO_32:
294 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 295 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 296
297 case BFD_RELOC_386_TLS_IE_32:
298 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 299 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 300
301 case BFD_RELOC_386_TLS_LE_32:
302 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 303 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 304
305 case BFD_RELOC_386_TLS_DTPMOD32:
306 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 307 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 308
309 case BFD_RELOC_386_TLS_DTPOFF32:
310 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 311 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 312
313 case BFD_RELOC_386_TLS_TPOFF32:
314 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 315 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 316
1788fc08
L		 317 case BFD_RELOC_SIZE32:
318 TRACE ("BFD_RELOC_SIZE32");
319 return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset];
320
67a4f2b7
AO		 321 case BFD_RELOC_386_TLS_GOTDESC:
322 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
323 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
324
325 case BFD_RELOC_386_TLS_DESC_CALL:
326 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
327 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
328
329 case BFD_RELOC_386_TLS_DESC:
330 TRACE ("BFD_RELOC_386_TLS_DESC");
331 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
332
cbe950e9
L		 333 case BFD_RELOC_386_IRELATIVE:
334 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 335 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 336
252b5132
RH		 337 case BFD_RELOC_VTABLE_INHERIT:
338 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 339 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 340
341 case BFD_RELOC_VTABLE_ENTRY:
342 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 343 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 344
345 default:
346 break;
347 }
348
349 TRACE ("Unknown");
350 return 0;
351}
352
157090f7
AM		 353static reloc_howto_type *
354elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
355 const char *r_name)
356{
357 unsigned int i;
358
359 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
360 if (elf_howto_table[i].name != NULL
361 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
362 return &elf_howto_table[i];
363
364 return NULL;
365}
366
142411ca
L		 367static reloc_howto_type *
368elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 369{
dc47f327
AM		 370 unsigned int indx;
371
372 if ((indx = r_type) >= R_386_standard
373 && ((indx = r_type - R_386_ext_offset) - R_386_standard
374 >= R_386_ext - R_386_standard)
13ae64f3 375 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9
L		 376 >= R_386_irelative - R_386_ext)
377 && ((indx = r_type - R_386_vt_offset) - R_386_irelative
378 >= R_386_vt - R_386_irelative))
252b5132 379 {
d003868e
AM		 380 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
381 abfd, (int) r_type);
55fd94b0 382 indx = R_386_NONE;
252b5132 383 }
142411ca
L		 384 BFD_ASSERT (elf_howto_table [indx].type == r_type);
385 return &elf_howto_table[indx];
386}
387
388static void
389elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
390 arelent *cache_ptr,
391 Elf_Internal_Rela *dst)
392{
393 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
394 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 395}
396
397/* Return whether a symbol name implies a local label. The UnixWare
398 2.1 cc generates temporary symbols that start with .X, so we
399 recognize them here. FIXME: do other SVR4 compilers also use .X?.
400 If so, we should move the .X recognition into
401 _bfd_elf_is_local_label_name. */
402
b34976b6 403static bfd_boolean
55fd94b0 404elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 405{
406 if (name[0] == '.' && name[1] == 'X')
b34976b6 407 return TRUE;
252b5132
RH		 408
409 return _bfd_elf_is_local_label_name (abfd, name);
410}
411\f
38701953 412/* Support for core dump NOTE sections. */
61adc1a4 413
b34976b6 414static bfd_boolean
55fd94b0 415elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 416{
417 int offset;
eea6121a 418 size_t size;
38701953 419
61adc1a4 420 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 421 {
61adc1a4
NC		 422 int pr_version = bfd_get_32 (abfd, note->descdata);
423
424 if (pr_version != 1)
425 return FALSE;
426
427 /* pr_cursig */
228e534f 428 elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20);
61adc1a4
NC		 429
430 /* pr_pid */
228e534f 431 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 432
433 /* pr_reg */
434 offset = 28;
eea6121a 435 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 436 }
437 else
438 {
439 switch (note->descsz)
440 {
441 default:
442 return FALSE;
38701953 443
61adc1a4
NC		 444 case 144: /* Linux/i386 */
445 /* pr_cursig */
228e534f 446 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 447
61adc1a4 448 /* pr_pid */
228e534f 449 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 450
61adc1a4
NC		 451 /* pr_reg */
452 offset = 72;
eea6121a 453 size = 68;
38701953 454
61adc1a4
NC		 455 break;
456 }
38701953
AM		 457 }
458
459 /* Make a ".reg/999" section. */
460 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 461 size, note->descpos + offset);
38701953
AM		 462}
463
b34976b6 464static bfd_boolean
55fd94b0 465elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 466{
61adc1a4 467 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 468 {
61adc1a4
NC		 469 int pr_version = bfd_get_32 (abfd, note->descdata);
470
471 if (pr_version != 1)
b34976b6 472 return FALSE;
38701953 473
228e534f 474 elf_tdata (abfd)->core->program
61adc1a4 475 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
228e534f 476 elf_tdata (abfd)->core->command
61adc1a4
NC		 477 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
478 }
479 else
480 {
481 switch (note->descsz)
482 {
483 default:
484 return FALSE;
485
486 case 124: /* Linux/i386 elf_prpsinfo. */
228e534f 487 elf_tdata (abfd)->core->pid
261b8d08 488 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 489 elf_tdata (abfd)->core->program
61adc1a4 490 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 491 elf_tdata (abfd)->core->command
61adc1a4
NC		 492 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
493 }
38701953
AM		 494 }
495
496 /* Note that for some reason, a spurious space is tacked
497 onto the end of the args in some (at least one anyway)
498 implementations, so strip it off if it exists. */
38701953 499 {
228e534f 500 char *command = elf_tdata (abfd)->core->command;
38701953
AM		 501 int n = strlen (command);
502
503 if (0 < n && command[n - 1] == ' ')
504 command[n - 1] = '\0';
505 }
506
b34976b6 507 return TRUE;
38701953
AM		 508}
509\f
510/* Functions for the i386 ELF linker.
511
512 In order to gain some understanding of code in this file without
513 knowing all the intricate details of the linker, note the
514 following:
515
516 Functions named elf_i386_* are called by external routines, other
517 functions are only called locally. elf_i386_* functions appear
518 in this file more or less in the order in which they are called
519 from external routines. eg. elf_i386_check_relocs is called
520 early in the link process, elf_i386_finish_dynamic_sections is
521 one of the last functions. */
522
252b5132
RH		 523
524/* The name of the dynamic interpreter. This is put in the .interp
525 section. */
526
527#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
528
a23b6845
AM		 529/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
530 copying dynamic variables from a shared lib into an app's dynbss
531 section, and instead use a dynamic relocation to point into the
532 shared lib. */
533#define ELIMINATE_COPY_RELOCS 1
534
252b5132
RH		 535/* The size in bytes of an entry in the procedure linkage table. */
536
537#define PLT_ENTRY_SIZE 16
538
539/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 540 this. See the SVR4 ABI i386 supplement to see how this works.
541 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 542
eac338cf 543static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 544{
545 0xff, 0x35, /* pushl contents of address */
546 0, 0, 0, 0, /* replaced with address of .got + 4. */
547 0xff, 0x25, /* jmp indirect */
eac338cf 548 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 549};
550
551/* Subsequent entries in an absolute procedure linkage table look like
552 this. */
553
554static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
555{
556 0xff, 0x25, /* jmp indirect */
557 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
558 0x68, /* pushl immediate */
559 0, 0, 0, 0, /* replaced with offset into relocation table. */
560 0xe9, /* jmp relative */
561 0, 0, 0, 0 /* replaced with offset to start of .plt. */
562};
563
eac338cf
PB		 564/* The first entry in a PIC procedure linkage table look like this.
565 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 566
eac338cf 567static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 568{
569 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 570 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 571};
572
573/* Subsequent entries in a PIC procedure linkage table look like this. */
574
575static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
576{
577 0xff, 0xa3, /* jmp *offset(%ebx) */
578 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
579 0x68, /* pushl immediate */
580 0, 0, 0, 0, /* replaced with offset into relocation table. */
581 0xe9, /* jmp relative */
582 0, 0, 0, 0 /* replaced with offset to start of .plt. */
583};
584
e41b3a13
JJ		 585/* .eh_frame covering the .plt section. */
586
587static const bfd_byte elf_i386_eh_frame_plt[] =
588{
589#define PLT_CIE_LENGTH 20
590#define PLT_FDE_LENGTH 36
591#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
592#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
593 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
594 0, 0, 0, 0, /* CIE ID */
595 1, /* CIE version */
596 'z', 'R', 0, /* Augmentation string */
597 1, /* Code alignment factor */
598 0x7c, /* Data alignment factor */
599 8, /* Return address column */
600 1, /* Augmentation size */
601 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
602 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
603 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
604 DW_CFA_nop, DW_CFA_nop,
605
606 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
607 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
608 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
609 0, 0, 0, 0, /* .plt size goes here */
610 0, /* Augmentation size */
611 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
612 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
613 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
614 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
615 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
616 11, /* Block length */
617 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
618 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
619 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 620 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ		 621 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
622};
623
25e762b9
RM		 624struct elf_i386_plt_layout
625{
626 /* The first entry in an absolute procedure linkage table looks like this. */
627 const bfd_byte *plt0_entry;
628 unsigned int plt0_entry_size;
629
630 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
631 unsigned int plt0_got1_offset;
632 unsigned int plt0_got2_offset;
633
634 /* Later entries in an absolute procedure linkage table look like this. */
635 const bfd_byte *plt_entry;
636 unsigned int plt_entry_size;
637
638 /* Offsets into plt_entry that are to be replaced with... */
639 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
640 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
641 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
642
643 /* Offset into plt_entry where the initial value of the GOT entry points. */
644 unsigned int plt_lazy_offset;
645
646 /* The first entry in a PIC procedure linkage table looks like this. */
647 const bfd_byte *pic_plt0_entry;
648
649 /* Subsequent entries in a PIC procedure linkage table look like this. */
650 const bfd_byte *pic_plt_entry;
651
652 /* .eh_frame covering the .plt section. */
653 const bfd_byte *eh_frame_plt;
654 unsigned int eh_frame_plt_size;
655};
656
657#define GET_PLT_ENTRY_SIZE(abfd) \
658 get_elf_i386_backend_data (abfd)->plt->plt_entry_size
659
660/* These are the standard parameters. */
661static const struct elf_i386_plt_layout elf_i386_plt =
662 {
663 elf_i386_plt0_entry, /* plt0_entry */
664 sizeof (elf_i386_plt0_entry), /* plt0_entry_size */
665 2, /* plt0_got1_offset */
666 8, /* plt0_got2_offset */
667 elf_i386_plt_entry, /* plt_entry */
668 PLT_ENTRY_SIZE, /* plt_entry_size */
669 2, /* plt_got_offset */
670 7, /* plt_reloc_offset */
671 12, /* plt_plt_offset */
672 6, /* plt_lazy_offset */
673 elf_i386_pic_plt0_entry, /* pic_plt0_entry */
674 elf_i386_pic_plt_entry, /* pic_plt_entry */
675 elf_i386_eh_frame_plt, /* eh_frame_plt */
676 sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */
677 };
678\f
679
eac338cf
PB		 680/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
681 for the PLTResolve stub and then for each PLT entry. */
682#define PLTRESOLVE_RELOCS_SHLIB 0
683#define PLTRESOLVE_RELOCS 2
684#define PLT_NON_JUMP_SLOT_RELOCS 2
685
23209a78
RM		 686/* Architecture-specific backend data for i386. */
687
688struct elf_i386_backend_data
689{
25e762b9
RM		 690 /* Parameters describing PLT generation. */
691 const struct elf_i386_plt_layout *plt;
692
23209a78
RM		 693 /* Value used to fill the unused bytes of the first PLT entry. */
694 bfd_byte plt0_pad_byte;
695
696 /* True if the target system is VxWorks. */
697 int is_vxworks;
698};
699
700#define get_elf_i386_backend_data(abfd) \
701 ((const struct elf_i386_backend_data *) \
702 get_elf_backend_data (abfd)->arch_data)
703
704/* These are the standard parameters. */
705static const struct elf_i386_backend_data elf_i386_arch_bed =
706 {
25e762b9 707 &elf_i386_plt, /* plt */
23209a78
RM		 708 0, /* plt0_pad_byte */
709 0, /* is_vxworks */
710 };
711
712#define elf_backend_arch_data &elf_i386_arch_bed
713
252b5132
RH		 714/* i386 ELF linker hash entry. */
715
716struct elf_i386_link_hash_entry
717{
ebe50bae 718 struct elf_link_hash_entry elf;
252b5132 719
0c715baa 720 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 721 struct elf_dyn_relocs *dyn_relocs;
13ae64f3 722
37e55690
JJ		 723#define GOT_UNKNOWN 0
724#define GOT_NORMAL 1
725#define GOT_TLS_GD 2
726#define GOT_TLS_IE 4
727#define GOT_TLS_IE_POS 5
728#define GOT_TLS_IE_NEG 6
729#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO		 730#define GOT_TLS_GDESC 8
731#define GOT_TLS_GD_BOTH_P(type) \
732 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
733#define GOT_TLS_GD_P(type) \
734 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
735#define GOT_TLS_GDESC_P(type) \
736 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
737#define GOT_TLS_GD_ANY_P(type) \
738 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 739 unsigned char tls_type;
67a4f2b7
AO		 740
741 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
742 starting at the end of the jump table. */
743 bfd_vma tlsdesc_got;
13ae64f3
JJ		 744};
745
746#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
747
748struct elf_i386_obj_tdata
749{
750 struct elf_obj_tdata root;
751
752 /* tls_type for each local got entry. */
753 char *local_got_tls_type;
67a4f2b7
AO		 754
755 /* GOTPLT entries for TLS descriptors. */
756 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 757};
758
13ae64f3
JJ		 759#define elf_i386_tdata(abfd) \
760 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
761
762#define elf_i386_local_got_tls_type(abfd) \
763 (elf_i386_tdata (abfd)->local_got_tls_type)
764
67a4f2b7
AO		 765#define elf_i386_local_tlsdesc_gotent(abfd) \
766 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
767
0ffa91dd
NC		 768#define is_i386_elf(bfd) \
769 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
770 && elf_tdata (bfd) != NULL \
4dfe6ac6 771 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 772
b34976b6 773static bfd_boolean
55fd94b0 774elf_i386_mkobject (bfd *abfd)
13ae64f3 775{
0ffa91dd 776 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 777 I386_ELF_DATA);
13ae64f3 778}
cedb70c5 779
252b5132
RH		 780/* i386 ELF linker hash table. */
781
782struct elf_i386_link_hash_table
783{
ebe50bae 784 struct elf_link_hash_table elf;
252b5132 785
6725bdbf 786 /* Short-cuts to get to dynamic linker sections. */
6725bdbf
AM		 787 asection *sdynbss;
788 asection *srelbss;
e41b3a13 789 asection *plt_eh_frame;
9635fe29 790
4dfe6ac6
NC		 791 union
792 {
13ae64f3
JJ		 793 bfd_signed_vma refcount;
794 bfd_vma offset;
795 } tls_ldm_got;
796
67a4f2b7
AO		 797 /* The amount of space used by the reserved portion of the sgotplt
798 section, plus whatever space is used by the jump slots. */
799 bfd_vma sgotplt_jump_table_size;
800
87d72d41
AM		 801 /* Small local sym cache. */
802 struct sym_cache sym_cache;
9f03412a
AO		 803
804 /* _TLS_MODULE_BASE_ symbol. */
805 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 806
807 /* Used by local STT_GNU_IFUNC symbols. */
808 htab_t loc_hash_table;
4dfe6ac6
NC		 809 void * loc_hash_memory;
810
811 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
812 asection *srelplt2;
813
4dfe6ac6
NC		 814 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
815 bfd_vma next_tls_desc_index;
e1f98742
L		 816
817 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
818 bfd_vma next_jump_slot_index;
819
820 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
821 bfd_vma next_irelative_index;
6725bdbf 822};
252b5132
RH		 823
824/* Get the i386 ELF linker hash table from a link_info structure. */
825
826#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 827 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
828 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 829
67a4f2b7 830#define elf_i386_compute_jump_table_size(htab) \
5ae0bfb6 831 ((htab)->next_tls_desc_index * 4)
67a4f2b7 832
252b5132
RH		 833/* Create an entry in an i386 ELF linker hash table. */
834
835static struct bfd_hash_entry *
eb4ff4d6
L		 836elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
837 struct bfd_hash_table *table,
838 const char *string)
252b5132 839{
252b5132
RH		 840 /* Allocate the structure if it has not already been allocated by a
841 subclass. */
ebe50bae
AM		 842 if (entry == NULL)
843 {
a50b1753
NC		 844 entry = (struct bfd_hash_entry *)
845 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 846 if (entry == NULL)
847 return entry;
848 }
252b5132
RH		 849
850 /* Call the allocation method of the superclass. */
ebe50bae
AM		 851 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
852 if (entry != NULL)
252b5132 853 {
ebe50bae
AM		 854 struct elf_i386_link_hash_entry *eh;
855
856 eh = (struct elf_i386_link_hash_entry *) entry;
857 eh->dyn_relocs = NULL;
13ae64f3 858 eh->tls_type = GOT_UNKNOWN;
67a4f2b7 859 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 860 }
861
ebe50bae 862 return entry;
252b5132
RH		 863}
864
c25bc9fc
L		 865/* Compute a hash of a local hash entry. We use elf_link_hash_entry
866 for local symbol so that we can handle local STT_GNU_IFUNC symbols
867 as global symbol. We reuse indx and dynstr_index for local symbol
868 hash since they aren't used by global symbols in this backend. */
869
870static hashval_t
871elf_i386_local_htab_hash (const void *ptr)
872{
873 struct elf_link_hash_entry *h
874 = (struct elf_link_hash_entry *) ptr;
d2149d72 875 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 876}
877
878/* Compare local hash entries. */
879
880static int
881elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
882{
883 struct elf_link_hash_entry *h1
884 = (struct elf_link_hash_entry *) ptr1;
885 struct elf_link_hash_entry *h2
886 = (struct elf_link_hash_entry *) ptr2;
887
888 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
889}
890
891/* Find and/or create a hash entry for local symbol. */
892
893static struct elf_link_hash_entry *
894elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
895 bfd *abfd, const Elf_Internal_Rela *rel,
896 bfd_boolean create)
897{
898 struct elf_i386_link_hash_entry e, *ret;
899 asection *sec = abfd->sections;
d2149d72
L		 900 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
901 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 902 void **slot;
903
904 e.elf.indx = sec->id;
905 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
906 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
907 create ? INSERT : NO_INSERT);
908
909 if (!slot)
910 return NULL;
911
912 if (*slot)
913 {
914 ret = (struct elf_i386_link_hash_entry *) *slot;
915 return &ret->elf;
916 }
917
918 ret = (struct elf_i386_link_hash_entry *)
919 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
920 sizeof (struct elf_i386_link_hash_entry));
921 if (ret)
922 {
923 memset (ret, 0, sizeof (*ret));
924 ret->elf.indx = sec->id;
925 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
926 ret->elf.dynindx = -1;
c25bc9fc
L		 927 *slot = ret;
928 }
929 return &ret->elf;
930}
931
252b5132
RH		 932/* Create an i386 ELF linker hash table. */
933
934static struct bfd_link_hash_table *
55fd94b0 935elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 936{
937 struct elf_i386_link_hash_table *ret;
dc810e39 938 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 939
7bf52ea2 940 ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt);
ebe50bae 941 if (ret == NULL)
252b5132
RH		 942 return NULL;
943
eb4ff4d6
L		 944 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
945 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 946 sizeof (struct elf_i386_link_hash_entry),
947 I386_ELF_DATA))
252b5132 948 {
e2d34d7d 949 free (ret);
252b5132
RH		 950 return NULL;
951 }
952
c25bc9fc
L		 953 ret->loc_hash_table = htab_try_create (1024,
954 elf_i386_local_htab_hash,
955 elf_i386_local_htab_eq,
956 NULL);
957 ret->loc_hash_memory = objalloc_create ();
958 if (!ret->loc_hash_table || !ret->loc_hash_memory)
959 {
960 free (ret);
961 return NULL;
962 }
963
ebe50bae 964 return &ret->elf.root;
252b5132
RH		 965}
966
c25bc9fc
L		 967/* Destroy an i386 ELF linker hash table. */
968
969static void
970elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash)
971{
972 struct elf_i386_link_hash_table *htab
973 = (struct elf_i386_link_hash_table *) hash;
974
975 if (htab->loc_hash_table)
976 htab_delete (htab->loc_hash_table);
977 if (htab->loc_hash_memory)
978 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
9f7c3e5e 979 _bfd_elf_link_hash_table_free (hash);
c25bc9fc
L		 980}
981
6725bdbf
AM		 982/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
983 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
984 hash table. */
985
b34976b6 986static bfd_boolean
55fd94b0 987elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 988{
989 struct elf_i386_link_hash_table *htab;
990
6725bdbf 991 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 992 return FALSE;
6725bdbf 993
6de2ae4a 994 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 995 if (htab == NULL)
996 return FALSE;
997
3d4d4302 998 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
6725bdbf 999 if (!info->shared)
3d4d4302 1000 htab->srelbss = bfd_get_linker_section (dynobj, ".rel.bss");
6725bdbf 1001
6de2ae4a 1002 if (!htab->sdynbss
6725bdbf
AM		 1003 || (!info->shared && !htab->srelbss))
1004 abort ();
1005
23209a78 1006 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1007 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1008 &htab->srelplt2))
711de32c 1009 return FALSE;
eac338cf 1010
e41b3a13 1011 if (!info->no_ld_generated_unwind_info
2fe0fd06 1012 && htab->plt_eh_frame == NULL
e4de50d4 1013 && htab->elf.splt != NULL)
e41b3a13 1014 {
bbf96e4e
L		 1015 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1016 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1017 | SEC_LINKER_CREATED);
e41b3a13 1018 htab->plt_eh_frame
bbf96e4e 1019 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ		 1020 if (htab->plt_eh_frame == NULL
1021 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1022 return FALSE;
e41b3a13
JJ		 1023 }
1024
b34976b6 1025 return TRUE;
6725bdbf
AM		 1026}
1027
ebe50bae
AM		 1028/* Copy the extra info we tack onto an elf_link_hash_entry. */
1029
51b64d56 1030static void
fcfa13d2 1031elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1032 struct elf_link_hash_entry *dir,
1033 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1034{
1035 struct elf_i386_link_hash_entry *edir, *eind;
1036
1037 edir = (struct elf_i386_link_hash_entry *) dir;
1038 eind = (struct elf_i386_link_hash_entry *) ind;
1039
bbd7ec4a 1040 if (eind->dyn_relocs != NULL)
ebe50bae 1041 {
bbd7ec4a
AM		 1042 if (edir->dyn_relocs != NULL)
1043 {
e03a8ed8
L		 1044 struct elf_dyn_relocs **pp;
1045 struct elf_dyn_relocs *p;
bbd7ec4a 1046
fcfa13d2 1047 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1048 list. Merge any entries against the same section. */
1049 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1050 {
e03a8ed8 1051 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1052
1053 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1054 if (q->sec == p->sec)
1055 {
1056 q->pc_count += p->pc_count;
1057 q->count += p->count;
1058 *pp = p->next;
1059 break;
1060 }
1061 if (q == NULL)
1062 pp = &p->next;
1063 }
1064 *pp = edir->dyn_relocs;
1065 }
1066
ebe50bae
AM		 1067 edir->dyn_relocs = eind->dyn_relocs;
1068 eind->dyn_relocs = NULL;
1069 }
ebe50bae 1070
cd67d266
JJ		 1071 if (ind->root.type == bfd_link_hash_indirect
1072 && dir->got.refcount <= 0)
1073 {
1074 edir->tls_type = eind->tls_type;
1075 eind->tls_type = GOT_UNKNOWN;
1076 }
81848ca0
AM		 1077
1078 if (ELIMINATE_COPY_RELOCS
1079 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1080 && dir->dynamic_adjusted)
1081 {
1082 /* If called to transfer flags for a weakdef during processing
1083 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1084 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1085 dir->ref_dynamic |= ind->ref_dynamic;
1086 dir->ref_regular |= ind->ref_regular;
1087 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1088 dir->needs_plt |= ind->needs_plt;
1089 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1090 }
81848ca0 1091 else
fcfa13d2 1092 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
ebe50bae
AM		 1093}
1094
142411ca
L		 1095/* Return TRUE if the TLS access code sequence support transition
1096 from R_TYPE. */
1097
1098static bfd_boolean
1099elf_i386_check_tls_transition (bfd *abfd, asection *sec,
1100 bfd_byte *contents,
1101 Elf_Internal_Shdr *symtab_hdr,
1102 struct elf_link_hash_entry **sym_hashes,
1103 unsigned int r_type,
1104 const Elf_Internal_Rela *rel,
1105 const Elf_Internal_Rela *relend)
13ae64f3 1106{
142411ca
L		 1107 unsigned int val, type;
1108 unsigned long r_symndx;
1109 struct elf_link_hash_entry *h;
1110 bfd_vma offset;
1111
1112 /* Get the section contents. */
1113 if (contents == NULL)
1114 {
1115 if (elf_section_data (sec)->this_hdr.contents != NULL)
1116 contents = elf_section_data (sec)->this_hdr.contents;
1117 else
1118 {
1119 /* FIXME: How to better handle error condition? */
1120 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1121 return FALSE;
13ae64f3 1122
142411ca
L		 1123 /* Cache the section contents for elf_link_input_bfd. */
1124 elf_section_data (sec)->this_hdr.contents = contents;
1125 }
1126 }
1127
1128 offset = rel->r_offset;
13ae64f3 1129 switch (r_type)
142411ca
L		 1130 {
1131 case R_386_TLS_GD:
1132 case R_386_TLS_LDM:
1133 if (offset < 2 || (rel + 1) >= relend)
1134 return FALSE;
1135
1136 type = bfd_get_8 (abfd, contents + offset - 2);
1137 if (r_type == R_386_TLS_GD)
1138 {
09e8c3bf 1139 /* Check transition from GD access model. Only
142411ca
L		 1140 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1141 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1142 can transit to different access model. */
1143 if ((offset + 10) > sec->size ||
1144 (type != 0x8d && type != 0x04))
1145 return FALSE;
1146
1147 val = bfd_get_8 (abfd, contents + offset - 1);
1148 if (type == 0x04)
1149 {
1150 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1151 if (offset < 3)
1152 return FALSE;
1153
1154 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1155 return FALSE;
1156
1157 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1158 return FALSE;
1159 }
1160 else
1161 {
1162 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1163 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1164 return FALSE;
1165
1166 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1167 return FALSE;
1168 }
1169 }
1170 else
1171 {
1172 /* Check transition from LD access model. Only
1173 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1174 can transit to different access model. */
1175 if (type != 0x8d || (offset + 9) > sec->size)
1176 return FALSE;
1177
1178 val = bfd_get_8 (abfd, contents + offset - 1);
1179 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1180 return FALSE;
1181 }
1182
1183 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1184 return FALSE;
1185
1186 r_symndx = ELF32_R_SYM (rel[1].r_info);
1187 if (r_symndx < symtab_hdr->sh_info)
1188 return FALSE;
1189
1190 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b
L		 1191 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1192 may be versioned. */
142411ca
L		 1193 return (h != NULL
1194 && h->root.root.string != NULL
1195 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1196 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
c4fb387b
L		 1197 && (strncmp (h->root.root.string, "___tls_get_addr",
1198 15) == 0));
142411ca
L		 1199
1200 case R_386_TLS_IE:
1201 /* Check transition from IE access model:
1202 movl foo@indntpoff(%rip), %eax
1203 movl foo@indntpoff(%rip), %reg
1204 addl foo@indntpoff(%rip), %reg
1205 */
1206
1207 if (offset < 1 || (offset + 4) > sec->size)
1208 return FALSE;
1209
1210 /* Check "movl foo@tpoff(%rip), %eax" first. */
1211 val = bfd_get_8 (abfd, contents + offset - 1);
1212 if (val == 0xa1)
1213 return TRUE;
1214
1215 if (offset < 2)
1216 return FALSE;
1217
1218 /* Check movl|addl foo@tpoff(%rip), %reg. */
1219 type = bfd_get_8 (abfd, contents + offset - 2);
1220 return ((type == 0x8b || type == 0x03)
1221 && (val & 0xc7) == 0x05);
1222
1223 case R_386_TLS_GOTIE:
1224 case R_386_TLS_IE_32:
1225 /* Check transition from {IE_32,GOTIE} access model:
1226 subl foo@{tpoff,gontoff}(%reg1), %reg2
1227 movl foo@{tpoff,gontoff}(%reg1), %reg2
1228 addl foo@{tpoff,gontoff}(%reg1), %reg2
1229 */
1230
1231 if (offset < 2 || (offset + 4) > sec->size)
1232 return FALSE;
1233
1234 val = bfd_get_8 (abfd, contents + offset - 1);
1235 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1236 return FALSE;
1237
1238 type = bfd_get_8 (abfd, contents + offset - 2);
1239 return type == 0x8b || type == 0x2b || type == 0x03;
1240
1241 case R_386_TLS_GOTDESC:
1242 /* Check transition from GDesc access model:
1243 leal x@tlsdesc(%ebx), %eax
1244
1245 Make sure it's a leal adding ebx to a 32-bit offset
1246 into any register, although it's probably almost always
1247 going to be eax. */
1248
1249 if (offset < 2 || (offset + 4) > sec->size)
1250 return FALSE;
1251
1252 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1253 return FALSE;
1254
1255 val = bfd_get_8 (abfd, contents + offset - 1);
1256 return (val & 0xc7) == 0x83;
1257
1258 case R_386_TLS_DESC_CALL:
1259 /* Check transition from GDesc access model:
1260 call *x@tlsdesc(%rax)
1261 */
1262 if (offset + 2 <= sec->size)
1263 {
1264 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM		 1265 static const unsigned char call[] = { 0xff, 0x10 };
1266 return memcmp (contents + offset, call, 2) == 0;
142411ca
L		 1267 }
1268
1269 return FALSE;
1270
1271 default:
1272 abort ();
1273 }
1274}
1275
1276/* Return TRUE if the TLS access transition is OK or no transition
1277 will be performed. Update R_TYPE if there is a transition. */
1278
1279static bfd_boolean
1280elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1281 asection *sec, bfd_byte *contents,
1282 Elf_Internal_Shdr *symtab_hdr,
1283 struct elf_link_hash_entry **sym_hashes,
1284 unsigned int *r_type, int tls_type,
1285 const Elf_Internal_Rela *rel,
1286 const Elf_Internal_Rela *relend,
4c544807
L		 1287 struct elf_link_hash_entry *h,
1288 unsigned long r_symndx)
142411ca
L		 1289{
1290 unsigned int from_type = *r_type;
1291 unsigned int to_type = from_type;
1292 bfd_boolean check = TRUE;
1293
bb1cb422
L		 1294 /* Skip TLS transition for functions. */
1295 if (h != NULL
1296 && (h->type == STT_FUNC
1297 || h->type == STT_GNU_IFUNC))
1298 return TRUE;
1299
142411ca 1300 switch (from_type)
13ae64f3
JJ		 1301 {
1302 case R_386_TLS_GD:
67a4f2b7
AO		 1303 case R_386_TLS_GOTDESC:
1304 case R_386_TLS_DESC_CALL:
13ae64f3 1305 case R_386_TLS_IE_32:
37e55690
JJ		 1306 case R_386_TLS_IE:
1307 case R_386_TLS_GOTIE:
1d85728f 1308 if (info->executable)
142411ca
L		 1309 {
1310 if (h == NULL)
1311 to_type = R_386_TLS_LE_32;
1312 else if (from_type != R_386_TLS_IE
1313 && from_type != R_386_TLS_GOTIE)
1314 to_type = R_386_TLS_IE_32;
1315 }
1316
1317 /* When we are called from elf_i386_relocate_section, CONTENTS
1318 isn't NULL and there may be additional transitions based on
1319 TLS_TYPE. */
1320 if (contents != NULL)
1321 {
1322 unsigned int new_to_type = to_type;
1323
1d85728f 1324 if (info->executable
142411ca
L		 1325 && h != NULL
1326 && h->dynindx == -1
1327 && (tls_type & GOT_TLS_IE))
1328 new_to_type = R_386_TLS_LE_32;
1329
1330 if (to_type == R_386_TLS_GD
1331 || to_type == R_386_TLS_GOTDESC
1332 || to_type == R_386_TLS_DESC_CALL)
1333 {
1334 if (tls_type == GOT_TLS_IE_POS)
1335 new_to_type = R_386_TLS_GOTIE;
1336 else if (tls_type & GOT_TLS_IE)
1337 new_to_type = R_386_TLS_IE_32;
1338 }
1339
1340 /* We checked the transition before when we were called from
1341 elf_i386_check_relocs. We only want to check the new
1342 transition which hasn't been checked before. */
1343 check = new_to_type != to_type && from_type == to_type;
1344 to_type = new_to_type;
1345 }
1346
1347 break;
1348
13ae64f3 1349 case R_386_TLS_LDM:
1d85728f 1350 if (info->executable)
142411ca
L		 1351 to_type = R_386_TLS_LE_32;
1352 break;
1353
1354 default:
1355 return TRUE;
1356 }
1357
1358 /* Return TRUE if there is no transition. */
1359 if (from_type == to_type)
1360 return TRUE;
1361
1362 /* Check if the transition can be performed. */
1363 if (check
1364 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1365 symtab_hdr, sym_hashes,
1366 from_type, rel, relend))
1367 {
2f629d23 1368 reloc_howto_type *from, *to;
4c544807 1369 const char *name;
142411ca
L		 1370
1371 from = elf_i386_rtype_to_howto (abfd, from_type);
1372 to = elf_i386_rtype_to_howto (abfd, to_type);
1373
4c544807
L		 1374 if (h)
1375 name = h->root.root.string;
1376 else
1377 {
4c544807 1378 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1379
4c544807 1380 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1381 if (htab == NULL)
1382 name = "*unknown*";
1383 else
1384 {
1385 Elf_Internal_Sym *isym;
1386
1387 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1388 abfd, r_symndx);
1389 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1390 }
4c544807
L		 1391 }
1392
142411ca
L		 1393 (*_bfd_error_handler)
1394 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1395 "in section `%A' failed"),
4c544807 1396 abfd, sec, from->name, to->name, name,
142411ca
L		 1397 (unsigned long) rel->r_offset);
1398 bfd_set_error (bfd_error_bad_value);
1399 return FALSE;
13ae64f3
JJ		 1400 }
1401
142411ca
L		 1402 *r_type = to_type;
1403 return TRUE;
13ae64f3
JJ		 1404}
1405
252b5132 1406/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1407 calculate needed space in the global offset table, procedure linkage
1408 table, and dynamic reloc sections. */
252b5132 1409
b34976b6 1410static bfd_boolean
55fd94b0
AM		 1411elf_i386_check_relocs (bfd *abfd,
1412 struct bfd_link_info *info,
1413 asection *sec,
1414 const Elf_Internal_Rela *relocs)
252b5132 1415{
6725bdbf 1416 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1417 Elf_Internal_Shdr *symtab_hdr;
1418 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1419 const Elf_Internal_Rela *rel;
1420 const Elf_Internal_Rela *rel_end;
252b5132
RH		 1421 asection *sreloc;
1422
1049f94e 1423 if (info->relocatable)
b34976b6 1424 return TRUE;
252b5132 1425
0ffa91dd
NC		 1426 BFD_ASSERT (is_i386_elf (abfd));
1427
6725bdbf 1428 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1429 if (htab == NULL)
1430 return FALSE;
1431
0ffa91dd 1432 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1433 sym_hashes = elf_sym_hashes (abfd);
252b5132 1434
252b5132
RH		 1435 sreloc = NULL;
1436
1437 rel_end = relocs + sec->reloc_count;
1438 for (rel = relocs; rel < rel_end; rel++)
1439 {
13ae64f3 1440 unsigned int r_type;
252b5132
RH		 1441 unsigned long r_symndx;
1442 struct elf_link_hash_entry *h;
4c544807
L		 1443 Elf_Internal_Sym *isym;
1444 const char *name;
06a6a421 1445 bfd_boolean size_reloc;
252b5132
RH		 1446
1447 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1448 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1449
d9bc7a44 1450 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1451 {
d003868e
AM		 1452 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1453 abfd,
8f615d07 1454 r_symndx);
b34976b6 1455 return FALSE;
f5f31454
L		 1456 }
1457
252b5132 1458 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1459 {
1460 /* A local symbol. */
c2e61a4e
L		 1461 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1462 abfd, r_symndx);
1463 if (isym == NULL)
1464 return FALSE;
c25bc9fc
L		 1465
1466 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1467 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1468 {
9fff0c39 1469 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1470 if (h == NULL)
c2e61a4e 1471 return FALSE;
6bbec505 1472
c25bc9fc
L		 1473 /* Fake a STT_GNU_IFUNC symbol. */
1474 h->type = STT_GNU_IFUNC;
1475 h->def_regular = 1;
1476 h->ref_regular = 1;
1477 h->forced_local = 1;
1478 h->root.type = bfd_link_hash_defined;
1479 }
1480 else
1481 h = NULL;
1482 }
252b5132 1483 else
71cb9464 1484 {
4c544807 1485 isym = NULL;
71cb9464
L		 1486 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1487 while (h->root.type == bfd_link_hash_indirect
1488 || h->root.type == bfd_link_hash_warning)
1489 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1490 }
cbe950e9 1491
c25bc9fc
L		 1492 if (h != NULL)
1493 {
cbe950e9
L		 1494 /* Create the ifunc sections for static executables. If we
1495 never see an indirect function symbol nor we are building
1496 a static executable, those sections will be empty and
1497 won't appear in output. */
1498 switch (r_type)
1499 {
1500 default:
1501 break;
1502
1503 case R_386_32:
1504 case R_386_PC32:
1505 case R_386_PLT32:
1506 case R_386_GOT32:
1507 case R_386_GOTOFF:
9d4057ee
AM		 1508 if (htab->elf.dynobj == NULL)
1509 htab->elf.dynobj = abfd;
1510 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1511 return FALSE;
cbe950e9
L		 1512 break;
1513 }
1514
ad1e85de
L		 1515 /* It is referenced by a non-shared object. */
1516 h->ref_regular = 1;
61315175 1517 h->root.non_ir_ref = 1;
71cb9464 1518 }
252b5132 1519
142411ca
L		 1520 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1521 symtab_hdr, sym_hashes,
1522 &r_type, GOT_UNKNOWN,
23209a78 1523 rel, rel_end, h, r_symndx))
c2e61a4e 1524 return FALSE;
13ae64f3
JJ		 1525
1526 switch (r_type)
252b5132 1527 {
37e55690
JJ		 1528 case R_386_TLS_LDM:
1529 htab->tls_ldm_got.refcount += 1;
1530 goto create_got;
1531
1532 case R_386_PLT32:
1533 /* This symbol requires a procedure linkage table entry. We
1534 actually build the entry in adjust_dynamic_symbol,
1535 because this might be a case of linking PIC code which is
1536 never referenced by a dynamic object, in which case we
1537 don't need to generate a procedure linkage table entry
1538 after all. */
1539
1540 /* If this is a local symbol, we resolve it directly without
1541 creating a procedure linkage table entry. */
1542 if (h == NULL)
1543 continue;
1544
f5385ebf 1545 h->needs_plt = 1;
37e55690
JJ		 1546 h->plt.refcount += 1;
1547 break;
1548
6a3e1bae 1549 case R_386_SIZE32:
06a6a421 1550 size_reloc = TRUE;
6a3e1bae
L		 1551 goto do_size;
1552
13ae64f3 1553 case R_386_TLS_IE_32:
37e55690
JJ		 1554 case R_386_TLS_IE:
1555 case R_386_TLS_GOTIE:
1d85728f 1556 if (!info->executable)
13ae64f3 1557 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1558 /* Fall through */
1559
252b5132 1560 case R_386_GOT32:
13ae64f3 1561 case R_386_TLS_GD:
67a4f2b7
AO		 1562 case R_386_TLS_GOTDESC:
1563 case R_386_TLS_DESC_CALL:
252b5132 1564 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1565 {
1566 int tls_type, old_tls_type;
1567
1568 switch (r_type)
1569 {
1570 default:
1571 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1572 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1573 case R_386_TLS_GOTDESC:
1574 case R_386_TLS_DESC_CALL:
1575 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1576 case R_386_TLS_IE_32:
1577 if (ELF32_R_TYPE (rel->r_info) == r_type)
1578 tls_type = GOT_TLS_IE_NEG;
1579 else
ebcfb3c0
JJ		 1580 /* If this is a GD->IE transition, we may use either of
1581 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1582 tls_type = GOT_TLS_IE;
1583 break;
1584 case R_386_TLS_IE:
1585 case R_386_TLS_GOTIE:
1586 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1587 }
1588
1589 if (h != NULL)
1590 {
1591 h->got.refcount += 1;
1592 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1593 }
1594 else
1595 {
1596 bfd_signed_vma *local_got_refcounts;
1597
1598 /* This is a global offset table entry for a local symbol. */
1599 local_got_refcounts = elf_local_got_refcounts (abfd);
1600 if (local_got_refcounts == NULL)
1601 {
1602 bfd_size_type size;
1603
1604 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1605 size *= (sizeof (bfd_signed_vma)
1606 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1607 local_got_refcounts = (bfd_signed_vma *)
1608 bfd_zalloc (abfd, size);
13ae64f3 1609 if (local_got_refcounts == NULL)
c2e61a4e 1610 return FALSE;
13ae64f3 1611 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1612 elf_i386_local_tlsdesc_gotent (abfd)
1613 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1614 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1615 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1616 }
1617 local_got_refcounts[r_symndx] += 1;
1618 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1619 }
1620
37e55690
JJ		 1621 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1622 tls_type |= old_tls_type;
13ae64f3
JJ		 1623 /* If a TLS symbol is accessed using IE at least once,
1624 there is no point to use dynamic model for it. */
ebcfb3c0 1625 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1626 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1627 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1628 {
67a4f2b7 1629 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1630 tls_type = old_tls_type;
67a4f2b7
AO		 1631 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1632 && GOT_TLS_GD_ANY_P (tls_type))
1633 tls_type |= old_tls_type;
13ae64f3
JJ		 1634 else
1635 {
09a24cbf 1636 if (h)
4c544807
L		 1637 name = h->root.root.string;
1638 else
1639 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1640 NULL);
13ae64f3 1641 (*_bfd_error_handler)
d003868e 1642 (_("%B: `%s' accessed both as normal and "
55fd94b0 1643 "thread local symbol"),
4c544807 1644 abfd, name);
68c4a57e 1645 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1646 return FALSE;
13ae64f3
JJ		 1647 }
1648 }
1649
1650 if (old_tls_type != tls_type)
1651 {
1652 if (h != NULL)
1653 elf_i386_hash_entry (h)->tls_type = tls_type;
1654 else
1655 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1656 }
1657 }
0ac8d2ca
AM		 1658 /* Fall through */
1659
1660 case R_386_GOTOFF:
1661 case R_386_GOTPC:
13ae64f3 1662 create_got:
6de2ae4a 1663 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 1664 {
1665 if (htab->elf.dynobj == NULL)
1666 htab->elf.dynobj = abfd;
6de2ae4a 1667 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1668 return FALSE;
0ac8d2ca 1669 }
37e55690
JJ		 1670 if (r_type != R_386_TLS_IE)
1671 break;
1672 /* Fall through */
252b5132 1673
37e55690
JJ		 1674 case R_386_TLS_LE_32:
1675 case R_386_TLS_LE:
1d85728f 1676 if (info->executable)
37e55690 1677 break;
bffbf940 1678 info->flags |= DF_STATIC_TLS;
b34976b6 1679 /* Fall through */
252b5132
RH		 1680
1681 case R_386_32:
1682 case R_386_PC32:
710ab287 1683 if (h != NULL && info->executable)
6725bdbf 1684 {
12d0ee4a 1685 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1686 need a copy reloc. We can't check reliably at this
1687 stage whether the section is read-only, as input
1688 sections have not yet been mapped to output sections.
1689 Tentatively set the flag for now, and correct in
1690 adjust_dynamic_symbol. */
f5385ebf 1691 h->non_got_ref = 1;
12d0ee4a
AM		 1692
1693 /* We may need a .plt entry if the function this reloc
1694 refers to is in a shared lib. */
51b64d56 1695 h->plt.refcount += 1;
c6585bbb 1696 if (r_type != R_386_PC32)
f5385ebf 1697 h->pointer_equality_needed = 1;
6725bdbf 1698 }
7843f00e 1699
06a6a421 1700 size_reloc = FALSE;
6a3e1bae 1701do_size:
252b5132 1702 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1703 against a global symbol, or a non PC relative reloc
1704 against a local symbol, then we need to copy the reloc
1705 into the shared library. However, if we are linking with
1706 -Bsymbolic, we do not need to copy a reloc against a
1707 global symbol which is defined in an object we are
1708 including in the link (i.e., DEF_REGULAR is set). At
1709 this point we have not seen all the input files, so it is
1710 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1711 later (it is never cleared). In case of a weak definition,
1712 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1713 a shared library. We account for that possibility below by
1f655a09
L		 1714 storing information in the relocs_copied field of the hash
1715 table entry. A similar situation occurs when creating
1716 shared libraries and symbol visibility changes render the
12d0ee4a 1717 symbol local.
56882138 1718
12d0ee4a
AM		 1719 If on the other hand, we are creating an executable, we
1720 may need to keep relocations for symbols satisfied by a
1721 dynamic library if we manage to avoid copy relocs for the
1722 symbol. */
1723 if ((info->shared
1724 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1725 && (r_type != R_386_PC32
12d0ee4a 1726 || (h != NULL
55255dae 1727 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1728 || h->root.type == bfd_link_hash_defweak
f5385ebf 1729 || !h->def_regular))))
a23b6845
AM		 1730 || (ELIMINATE_COPY_RELOCS
1731 && !info->shared
12d0ee4a
AM		 1732 && (sec->flags & SEC_ALLOC) != 0
1733 && h != NULL
12d0ee4a 1734 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1735 || !h->def_regular)))
252b5132 1736 {
e03a8ed8
L		 1737 struct elf_dyn_relocs *p;
1738 struct elf_dyn_relocs **head;
ec338859 1739
12d0ee4a
AM		 1740 /* We must copy these reloc types into the output file.
1741 Create a reloc section in dynobj and make room for
1742 this reloc. */
252b5132
RH		 1743 if (sreloc == NULL)
1744 {
0ac8d2ca
AM		 1745 if (htab->elf.dynobj == NULL)
1746 htab->elf.dynobj = abfd;
1747
83bac4b0
NC		 1748 sreloc = _bfd_elf_make_dynamic_reloc_section
1749 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1750
252b5132 1751 if (sreloc == NULL)
c2e61a4e 1752 return FALSE;
252b5132
RH		 1753 }
1754
0c715baa
AM		 1755 /* If this is a global symbol, we count the number of
1756 relocations we need for this symbol. */
1757 if (h != NULL)
252b5132 1758 {
ec338859 1759 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
0c715baa
AM		 1760 }
1761 else
1762 {
ec338859
AM		 1763 /* Track dynamic relocs needed for local syms too.
1764 We really need local syms available to do this
1765 easily. Oh well. */
87d72d41 1766 void **vpp;
ec338859 1767 asection *s;
87d72d41
AM		 1768
1769 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1770 abfd, r_symndx);
1771 if (isym == NULL)
1772 return FALSE;
1773
1774 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1775 if (s == NULL)
87d72d41 1776 s = sec;
ec338859 1777
e81d3500 1778 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1779 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1780 }
1781
1782 p = *head;
1783 if (p == NULL || p->sec != sec)
1784 {
1785 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1786 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1787 amt);
ec338859 1788 if (p == NULL)
c2e61a4e 1789 return FALSE;
ec338859
AM		 1790 p->next = *head;
1791 *head = p;
1792 p->sec = sec;
1793 p->count = 0;
1794 p->pc_count = 0;
252b5132 1795 }
ec338859
AM		 1796
1797 p->count += 1;
06a6a421
L		 1798 /* Count size relocation as PC-relative relocation. */
1799 if (r_type == R_386_PC32 || size_reloc)
ec338859 1800 p->pc_count += 1;
252b5132 1801 }
252b5132
RH		 1802 break;
1803
1804 /* This relocation describes the C++ object vtable hierarchy.
1805 Reconstruct it for later use during GC. */
1806 case R_386_GNU_VTINHERIT:
d17e0c6e 1807 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1808 return FALSE;
252b5132
RH		 1809 break;
1810
1811 /* This relocation describes which C++ vtable entries are actually
1812 used. Record for later use during GC. */
1813 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1814 BFD_ASSERT (h != NULL);
1815 if (h != NULL
1816 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c2e61a4e 1817 return FALSE;
252b5132
RH		 1818 break;
1819
1820 default:
1821 break;
1822 }
1823 }
1824
b34976b6 1825 return TRUE;
252b5132
RH		 1826}
1827
1828/* Return the section that should be marked against GC for a given
1829 relocation. */
1830
1831static asection *
55fd94b0 1832elf_i386_gc_mark_hook (asection *sec,
07adf181 1833 struct bfd_link_info *info,
55fd94b0
AM		 1834 Elf_Internal_Rela *rel,
1835 struct elf_link_hash_entry *h,
1836 Elf_Internal_Sym *sym)
252b5132
RH		 1837{
1838 if (h != NULL)
07adf181
AM		 1839 switch (ELF32_R_TYPE (rel->r_info))
1840 {
1841 case R_386_GNU_VTINHERIT:
1842 case R_386_GNU_VTENTRY:
1843 return NULL;
1844 }
1845
1846 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1847}
1848
1849/* Update the got entry reference counts for the section being removed. */
1850
b34976b6 1851static bfd_boolean
55fd94b0
AM		 1852elf_i386_gc_sweep_hook (bfd *abfd,
1853 struct bfd_link_info *info,
1854 asection *sec,
1855 const Elf_Internal_Rela *relocs)
252b5132 1856{
4dfe6ac6 1857 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 1858 Elf_Internal_Shdr *symtab_hdr;
1859 struct elf_link_hash_entry **sym_hashes;
1860 bfd_signed_vma *local_got_refcounts;
1861 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1862
7dda2462
TG		 1863 if (info->relocatable)
1864 return TRUE;
1865
4dfe6ac6
NC		 1866 htab = elf_i386_hash_table (info);
1867 if (htab == NULL)
1868 return FALSE;
1869
ec338859 1870 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1871
0ffa91dd 1872 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 1873 sym_hashes = elf_sym_hashes (abfd);
1874 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1875
1876 relend = relocs + sec->reloc_count;
1877 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1878 {
1879 unsigned long r_symndx;
1880 unsigned int r_type;
1881 struct elf_link_hash_entry *h = NULL;
37e55690 1882
26e41594
AM		 1883 r_symndx = ELF32_R_SYM (rel->r_info);
1884 if (r_symndx >= symtab_hdr->sh_info)
1885 {
26e41594 1886 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1887 while (h->root.type == bfd_link_hash_indirect
1888 || h->root.type == bfd_link_hash_warning)
1889 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1890 }
bb1cb422
L		 1891 else
1892 {
1893 /* A local symbol. */
1894 Elf_Internal_Sym *isym;
1895
1896 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1897 abfd, r_symndx);
1898
1899 /* Check relocation against local STT_GNU_IFUNC symbol. */
1900 if (isym != NULL
1901 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1902 {
1903 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
1904 if (h == NULL)
1905 abort ();
1906 }
1907 }
0c715baa 1908
3db2e7dd
L		 1909 if (h)
1910 {
1911 struct elf_i386_link_hash_entry *eh;
1912 struct elf_dyn_relocs **pp;
1913 struct elf_dyn_relocs *p;
1914
1915 eh = (struct elf_i386_link_hash_entry *) h;
1916 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1917 if (p->sec == sec)
1918 {
1919 /* Everything must go for SEC. */
1920 *pp = p->next;
1921 break;
1922 }
1923 }
1924
26e41594 1925 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 1926 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1927 symtab_hdr, sym_hashes,
1928 &r_type, GOT_UNKNOWN,
23209a78 1929 rel, relend, h, r_symndx))
142411ca
L		 1930 return FALSE;
1931
26e41594
AM		 1932 switch (r_type)
1933 {
1934 case R_386_TLS_LDM:
4dfe6ac6
NC		 1935 if (htab->tls_ldm_got.refcount > 0)
1936 htab->tls_ldm_got.refcount -= 1;
26e41594 1937 break;
0c715baa 1938
26e41594 1939 case R_386_TLS_GD:
67a4f2b7
AO		 1940 case R_386_TLS_GOTDESC:
1941 case R_386_TLS_DESC_CALL:
26e41594
AM		 1942 case R_386_TLS_IE_32:
1943 case R_386_TLS_IE:
1944 case R_386_TLS_GOTIE:
1945 case R_386_GOT32:
1946 if (h != NULL)
1947 {
1948 if (h->got.refcount > 0)
1949 h->got.refcount -= 1;
bb1cb422
L		 1950 if (h->type == STT_GNU_IFUNC)
1951 {
1952 if (h->plt.refcount > 0)
1953 h->plt.refcount -= 1;
1954 }
26e41594
AM		 1955 }
1956 else if (local_got_refcounts != NULL)
1957 {
1958 if (local_got_refcounts[r_symndx] > 0)
1959 local_got_refcounts[r_symndx] -= 1;
1960 }
1961 break;
0c715baa 1962
26e41594
AM		 1963 case R_386_32:
1964 case R_386_PC32:
1788fc08 1965 case R_386_SIZE32:
3db2e7dd
L		 1966 if (info->shared
1967 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM		 1968 break;
1969 /* Fall through */
6725bdbf 1970
26e41594
AM		 1971 case R_386_PLT32:
1972 if (h != NULL)
1973 {
1974 if (h->plt.refcount > 0)
1975 h->plt.refcount -= 1;
1976 }
1977 break;
dd5724d5 1978
bb1cb422
L		 1979 case R_386_GOTOFF:
1980 if (h != NULL && h->type == STT_GNU_IFUNC)
1981 {
1982 if (h->got.refcount > 0)
1983 h->got.refcount -= 1;
1984 if (h->plt.refcount > 0)
1985 h->plt.refcount -= 1;
1986 }
1987 break;
1988
26e41594
AM		 1989 default:
1990 break;
1991 }
1992 }
252b5132 1993
b34976b6 1994 return TRUE;
252b5132
RH		 1995}
1996
1997/* Adjust a symbol defined by a dynamic object and referenced by a
1998 regular object. The current definition is in some section of the
1999 dynamic object, but we're not including those sections. We have to
2000 change the definition to something the rest of the link can
2001 understand. */
2002
b34976b6 2003static bfd_boolean
55fd94b0
AM		 2004elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2005 struct elf_link_hash_entry *h)
252b5132 2006{
6725bdbf 2007 struct elf_i386_link_hash_table *htab;
252b5132 2008 asection *s;
5ca5bb35
L		 2009 struct elf_i386_link_hash_entry *eh;
2010 struct elf_dyn_relocs *p;
252b5132 2011
cbe950e9
L		 2012 /* STT_GNU_IFUNC symbol must go through PLT. */
2013 if (h->type == STT_GNU_IFUNC)
2014 {
73bcf233
L		 2015 /* All local STT_GNU_IFUNC references must be treate as local
2016 calls via local PLT. */
5ca5bb35
L		 2017 if (h->ref_regular
2018 && SYMBOL_CALLS_LOCAL (info, h))
2019 {
73bcf233 2020 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2021 struct elf_dyn_relocs **pp;
2022
2023 eh = (struct elf_i386_link_hash_entry *) h;
2024 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2025 {
2026 pc_count += p->pc_count;
2027 p->count -= p->pc_count;
2028 p->pc_count = 0;
73bcf233 2029 count += p->count;
5ca5bb35
L		 2030 if (p->count == 0)
2031 *pp = p->next;
2032 else
2033 pp = &p->next;
2034 }
2035
73bcf233 2036 if (pc_count || count)
5ca5bb35
L		 2037 {
2038 h->needs_plt = 1;
5ca5bb35 2039 h->non_got_ref = 1;
a5479e5f
L		 2040 if (h->plt.refcount <= 0)
2041 h->plt.refcount = 1;
2042 else
2043 h->plt.refcount += 1;
5ca5bb35
L		 2044 }
2045 }
2046
cbe950e9
L		 2047 if (h->plt.refcount <= 0)
2048 {
2049 h->plt.offset = (bfd_vma) -1;
2050 h->needs_plt = 0;
2051 }
2052 return TRUE;
2053 }
2054
252b5132
RH		 2055 /* If this is a function, put it in the procedure linkage table. We
2056 will fill in the contents of the procedure linkage table later,
2057 when we know the address of the .got section. */
2058 if (h->type == STT_FUNC
f5385ebf 2059 || h->needs_plt)
252b5132 2060 {
6725bdbf 2061 if (h->plt.refcount <= 0
9c7a29a3
AM		 2062 || SYMBOL_CALLS_LOCAL (info, h)
2063 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2064 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2065 {
2066 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2067 file, but the symbol was never referred to by a dynamic
2068 object, or if all references were garbage collected. In
2069 such a case, we don't actually need to build a procedure
2070 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2071 h->plt.offset = (bfd_vma) -1;
f5385ebf 2072 h->needs_plt = 0;
252b5132
RH		 2073 }
2074
b34976b6 2075 return TRUE;
252b5132 2076 }
6725bdbf
AM		 2077 else
2078 /* It's possible that we incorrectly decided a .plt reloc was
2079 needed for an R_386_PC32 reloc to a non-function sym in
2080 check_relocs. We can't decide accurately between function and
2081 non-function syms in check-relocs; Objects loaded later in
2082 the link may change h->type. So fix it now. */
bbd7ec4a 2083 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2084
2085 /* If this is a weak symbol, and there is a real definition, the
2086 processor independent code will have arranged for us to see the
2087 real definition first, and we can just use the same value. */
f6e332e6 2088 if (h->u.weakdef != NULL)
252b5132 2089 {
f6e332e6
AM		 2090 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2091 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2092 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2093 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2094 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2095 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2096 return TRUE;
252b5132
RH		 2097 }
2098
2099 /* This is a reference to a symbol defined by a dynamic object which
2100 is not a function. */
2101
2102 /* If we are creating a shared library, we must presume that the
2103 only references to the symbol are via the global offset table.
2104 For such cases we need not do anything here; the relocations will
2105 be handled correctly by relocate_section. */
2106 if (info->shared)
b34976b6 2107 return TRUE;
252b5132 2108
7843f00e
ILT		 2109 /* If there are no references to this symbol that do not use the
2110 GOT, we don't need to generate a copy reloc. */
f5385ebf 2111 if (!h->non_got_ref)
b34976b6 2112 return TRUE;
7843f00e 2113
8bd621d8
AM		 2114 /* If -z nocopyreloc was given, we won't generate them either. */
2115 if (info->nocopyreloc)
2116 {
f5385ebf 2117 h->non_got_ref = 0;
b34976b6 2118 return TRUE;
8bd621d8
AM		 2119 }
2120
643796e3 2121 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2122 if (htab == NULL)
2123 return FALSE;
643796e3
DJ		 2124
2125 /* If there aren't any dynamic relocs in read-only sections, then
2126 we can keep the dynamic relocs and avoid the copy reloc. This
2127 doesn't work on VxWorks, where we can not have dynamic relocations
2128 (other than copy and jump slot relocations) in an executable. */
23209a78
RM		 2129 if (ELIMINATE_COPY_RELOCS
2130 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2131 {
a23b6845
AM		 2132 eh = (struct elf_i386_link_hash_entry *) h;
2133 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2134 {
2135 s = p->sec->output_section;
2136 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2137 break;
2138 }
2139
a23b6845
AM		 2140 if (p == NULL)
2141 {
f5385ebf 2142 h->non_got_ref = 0;
a23b6845
AM		 2143 return TRUE;
2144 }
ebe50bae
AM		 2145 }
2146
252b5132
RH		 2147 /* We must allocate the symbol in our .dynbss section, which will
2148 become part of the .bss section of the executable. There will be
2149 an entry for this symbol in the .dynsym section. The dynamic
2150 object will contain position independent code, so all references
2151 from the dynamic object to this symbol will go through the global
2152 offset table. The dynamic linker will use the .dynsym entry to
2153 determine the address it must put in the global offset table, so
2154 both the dynamic object and the regular object will refer to the
2155 same memory location for the variable. */
2156
252b5132
RH		 2157 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2158 copy the initial value out of the dynamic object and into the
0ac8d2ca 2159 runtime process image. */
1d7e9d18 2160 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2161 {
eea6121a 2162 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2163 h->needs_copy = 1;
252b5132
RH		 2164 }
2165
0ac8d2ca 2166 s = htab->sdynbss;
252b5132 2167
027297b7 2168 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH		 2169}
2170
6725bdbf 2171/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2172 dynamic relocs. */
6725bdbf 2173
b34976b6 2174static bfd_boolean
eb4ff4d6 2175elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2176{
2177 struct bfd_link_info *info;
2178 struct elf_i386_link_hash_table *htab;
5a15f56f 2179 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2180 struct elf_dyn_relocs *p;
25e762b9 2181 unsigned plt_entry_size;
6725bdbf 2182
e92d460e 2183 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2184 return TRUE;
6725bdbf 2185
cbe950e9 2186 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2187
6725bdbf
AM		 2188 info = (struct bfd_link_info *) inf;
2189 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2190 if (htab == NULL)
2191 return FALSE;
6725bdbf 2192
25e762b9
RM		 2193 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2194
cbe950e9
L		 2195 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2196 here if it is defined and referenced in a non-shared object. */
2197 if (h->type == STT_GNU_IFUNC
2198 && h->def_regular)
25e762b9 2199 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
7b70956d
WN		 2200 plt_entry_size,
2201 plt_entry_size, 4);
cbe950e9
L		 2202 else if (htab->elf.dynamic_sections_created
2203 && h->plt.refcount > 0)
6725bdbf 2204 {
5a15f56f
AM		 2205 /* Make sure this symbol is output as a dynamic symbol.
2206 Undefined weak syms won't yet be marked as dynamic. */
2207 if (h->dynindx == -1
f5385ebf 2208 && !h->forced_local)
5a15f56f 2209 {
c152c796 2210 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2211 return FALSE;
5a15f56f
AM		 2212 }
2213
4e795f50
AM		 2214 if (info->shared
2215 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2216 {
6de2ae4a 2217 asection *s = htab->elf.splt;
6725bdbf 2218
ced53ee5
AM		 2219 /* If this is the first .plt entry, make room for the special
2220 first entry. */
eea6121a 2221 if (s->size == 0)
bb81b736 2222 s->size = plt_entry_size;
6725bdbf 2223
eea6121a 2224 h->plt.offset = s->size;
6725bdbf 2225
ced53ee5
AM		 2226 /* If this symbol is not defined in a regular file, and we are
2227 not generating a shared library, then set the symbol to this
2228 location in the .plt. This is required to make function
2229 pointers compare as equal between the normal executable and
2230 the shared library. */
2231 if (! info->shared
f5385ebf 2232 && !h->def_regular)
ced53ee5
AM		 2233 {
2234 h->root.u.def.section = s;
2235 h->root.u.def.value = h->plt.offset;
2236 }
6725bdbf 2237
ced53ee5 2238 /* Make room for this entry. */
25e762b9 2239 s->size += plt_entry_size;
6725bdbf 2240
ced53ee5
AM		 2241 /* We also need to make an entry in the .got.plt section, which
2242 will be placed in the .got section by the linker script. */
6de2ae4a 2243 htab->elf.sgotplt->size += 4;
6725bdbf 2244
6725bdbf 2245 /* We also need to make an entry in the .rel.plt section. */
6de2ae4a 2246 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
e1f98742 2247 htab->elf.srelplt->reloc_count++;
eac338cf 2248
23209a78
RM		 2249 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
2250 && !info->shared)
eac338cf
PB		 2251 {
2252 /* VxWorks has a second set of relocations for each PLT entry
2253 in executables. They go in a separate relocation section,
2254 which is processed by the kernel loader. */
2255
2256 /* There are two relocations for the initial PLT entry: an
2257 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2258 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2259
25e762b9 2260 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2261 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2262
2263 /* There are two extra relocations for each subsequent PLT entry:
2264 an R_386_32 relocation for the GOT entry, and an R_386_32
2265 relocation for the PLT entry. */
2266
2267 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2268 }
6725bdbf 2269 }
ced53ee5
AM		 2270 else
2271 {
51b64d56 2272 h->plt.offset = (bfd_vma) -1;
f5385ebf 2273 h->needs_plt = 0;
ced53ee5 2274 }
6725bdbf
AM		 2275 }
2276 else
2277 {
51b64d56 2278 h->plt.offset = (bfd_vma) -1;
f5385ebf 2279 h->needs_plt = 0;
6725bdbf
AM		 2280 }
2281
67a4f2b7
AO		 2282 eh->tlsdesc_got = (bfd_vma) -1;
2283
37e55690 2284 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2285 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2286 if (h->got.refcount > 0
1d85728f 2287 && info->executable
13ae64f3 2288 && h->dynindx == -1
37e55690 2289 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2290 h->got.offset = (bfd_vma) -1;
13ae64f3 2291 else if (h->got.refcount > 0)
6725bdbf 2292 {
0ac8d2ca 2293 asection *s;
b34976b6 2294 bfd_boolean dyn;
13ae64f3 2295 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2296
5a15f56f
AM		 2297 /* Make sure this symbol is output as a dynamic symbol.
2298 Undefined weak syms won't yet be marked as dynamic. */
2299 if (h->dynindx == -1
f5385ebf 2300 && !h->forced_local)
5a15f56f 2301 {
c152c796 2302 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2303 return FALSE;
5a15f56f
AM		 2304 }
2305
6de2ae4a 2306 s = htab->elf.sgot;
67a4f2b7
AO		 2307 if (GOT_TLS_GDESC_P (tls_type))
2308 {
6de2ae4a 2309 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2310 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2311 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2312 h->got.offset = (bfd_vma) -2;
2313 }
2314 if (! GOT_TLS_GDESC_P (tls_type)
2315 || GOT_TLS_GD_P (tls_type))
2316 {
2317 h->got.offset = s->size;
2318 s->size += 4;
2319 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2320 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2321 s->size += 4;
2322 }
ebe50bae 2323 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2324 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2325 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2326 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2327 need two), R_386_TLS_GD needs one if local symbol and two if
2328 global. */
2329 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2330 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2331 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2332 || (tls_type & GOT_TLS_IE))
6de2ae4a 2333 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2334 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2335 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2336 else if (! GOT_TLS_GDESC_P (tls_type)
2337 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2338 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 2339 && (info->shared
2340 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2341 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2342 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2343 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2344 }
2345 else
51b64d56 2346 h->got.offset = (bfd_vma) -1;
6725bdbf 2347
5a15f56f 2348 if (eh->dyn_relocs == NULL)
b34976b6 2349 return TRUE;
5a15f56f 2350
0c715baa
AM		 2351 /* In the shared -Bsymbolic case, discard space allocated for
2352 dynamic pc-relative relocs against symbols which turn out to be
2353 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2354 space for pc-relative relocs that have become local due to symbol
2355 visibility changes. */
0c715baa
AM		 2356
2357 if (info->shared)
5a15f56f 2358 {
09695f56
AM		 2359 /* The only reloc that uses pc_count is R_386_PC32, which will
2360 appear on a call or on something like ".long foo - .". We
2361 want calls to protected symbols to resolve directly to the
2362 function rather than going via the plt. If people want
2363 function pointer comparisons to work as expected then they
2364 should avoid writing assembly like ".long foo - .". */
2365 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2366 {
e03a8ed8 2367 struct elf_dyn_relocs **pp;
0c715baa
AM		 2368
2369 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2370 {
c3ce498c
L		 2371 p->count -= p->pc_count;
2372 p->pc_count = 0;
0c715baa
AM		 2373 if (p->count == 0)
2374 *pp = p->next;
2375 else
2376 pp = &p->next;
2377 }
5a15f56f 2378 }
4e795f50 2379
23209a78 2380 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2381 {
e03a8ed8 2382 struct elf_dyn_relocs **pp;
3348747a
NS		 2383 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2384 {
2385 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2386 *pp = p->next;
2387 else
2388 pp = &p->next;
2389 }
2390 }
2391
4e795f50 2392 /* Also discard relocs on undefined weak syms with non-default
3348747a 2393 visibility. */
22d606e9 2394 if (eh->dyn_relocs != NULL
4e795f50 2395 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2396 {
2397 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2398 eh->dyn_relocs = NULL;
2399
2400 /* Make sure undefined weak symbols are output as a dynamic
2401 symbol in PIEs. */
2402 else if (h->dynindx == -1
2403 && !h->forced_local)
2404 {
2405 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2406 return FALSE;
2407 }
2408 }
0c715baa 2409 }
a23b6845 2410 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2411 {
2412 /* For the non-shared case, discard space for relocs against
2413 symbols which turn out to need copy relocs or are not
2414 dynamic. */
2415
f5385ebf
AM		 2416 if (!h->non_got_ref
2417 && ((h->def_dynamic
2418 && !h->def_regular)
ebe50bae 2419 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2420 && (h->root.type == bfd_link_hash_undefweak
2421 || h->root.type == bfd_link_hash_undefined))))
2422 {
2423 /* Make sure this symbol is output as a dynamic symbol.
2424 Undefined weak syms won't yet be marked as dynamic. */
2425 if (h->dynindx == -1
f5385ebf 2426 && !h->forced_local)
0c715baa 2427 {
c152c796 2428 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2429 return FALSE;
0c715baa 2430 }
5a15f56f 2431
0c715baa
AM		 2432 /* If that succeeded, we know we'll be keeping all the
2433 relocs. */
2434 if (h->dynindx != -1)
2435 goto keep;
2436 }
2437
2438 eh->dyn_relocs = NULL;
2439
ec338859 2440 keep: ;
5a15f56f
AM		 2441 }
2442
0c715baa
AM		 2443 /* Finally, allocate space. */
2444 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2445 {
e7c33416
NC		 2446 asection *sreloc;
2447
cbe950e9 2448 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2449
2450 BFD_ASSERT (sreloc != NULL);
eea6121a 2451 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2452 }
2453
b34976b6 2454 return TRUE;
6725bdbf
AM		 2455}
2456
c25bc9fc
L		 2457/* Allocate space in .plt, .got and associated reloc sections for
2458 local dynamic relocs. */
2459
2460static bfd_boolean
2461elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2462{
2463 struct elf_link_hash_entry *h
2464 = (struct elf_link_hash_entry *) *slot;
2465
2466 if (h->type != STT_GNU_IFUNC
2467 || !h->def_regular
2468 || !h->ref_regular
2469 || !h->forced_local
2470 || h->root.type != bfd_link_hash_defined)
2471 abort ();
2472
2473 return elf_i386_allocate_dynrelocs (h, inf);
2474}
2475
0c715baa
AM		 2476/* Find any dynamic relocs that apply to read-only sections. */
2477
b34976b6 2478static bfd_boolean
eb4ff4d6 2479elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2480{
2481 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2482 struct elf_dyn_relocs *p;
0c715baa 2483
aa715242
L		 2484 /* Skip local IFUNC symbols. */
2485 if (h->forced_local && h->type == STT_GNU_IFUNC)
2486 return TRUE;
2487
0c715baa
AM		 2488 eh = (struct elf_i386_link_hash_entry *) h;
2489 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2490 {
2491 asection *s = p->sec->output_section;
2492
2493 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2494 {
2495 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2496
2497 info->flags |= DF_TEXTREL;
2498
b70321a2
L		 2499 if (info->warn_shared_textrel && info->shared)
2500 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
2501 p->sec->owner, h->root.root.string,
2502 p->sec);
2503
0c715baa 2504 /* Not an error, just cut short the traversal. */
b34976b6 2505 return FALSE;
0c715baa
AM		 2506 }
2507 }
b34976b6 2508 return TRUE;
0c715baa
AM		 2509}
2510
daa67607
L		 2511/* Convert
2512 mov foo@GOT(%reg), %reg
2513 to
2514 lea foo@GOTOFF(%reg), %reg
2515 with the local symbol, foo. */
2516
2517static bfd_boolean
2518elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
2519 struct bfd_link_info *link_info)
2520{
2521 Elf_Internal_Shdr *symtab_hdr;
2522 Elf_Internal_Rela *internal_relocs;
2523 Elf_Internal_Rela *irel, *irelend;
2524 bfd_byte *contents;
2525 struct elf_i386_link_hash_table *htab;
2526 bfd_boolean changed_contents;
2527 bfd_boolean changed_relocs;
2528 bfd_signed_vma *local_got_refcounts;
2529
2530 /* Don't even try to convert non-ELF outputs. */
2531 if (!is_elf_hash_table (link_info->hash))
2532 return FALSE;
2533
fbdc86d9 2534 /* Nothing to do if there are no codes, no relocations or no output. */
daa67607 2535 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
fbdc86d9
L		 2536 || sec->reloc_count == 0
2537 || discarded_section (sec))
daa67607
L		 2538 return TRUE;
2539
2540 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2541
2542 /* Load the relocations for this section. */
2543 internal_relocs = (_bfd_elf_link_read_relocs
2544 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2545 link_info->keep_memory));
2546 if (internal_relocs == NULL)
2547 return FALSE;
2548
2549 htab = elf_i386_hash_table (link_info);
2550 changed_contents = FALSE;
2551 changed_relocs = FALSE;
2552 local_got_refcounts = elf_local_got_refcounts (abfd);
2553
2554 /* Get the section contents. */
2555 if (elf_section_data (sec)->this_hdr.contents != NULL)
2556 contents = elf_section_data (sec)->this_hdr.contents;
2557 else
2558 {
2559 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2560 goto error_return;
2561 }
2562
2563 irelend = internal_relocs + sec->reloc_count;
2564 for (irel = internal_relocs; irel < irelend; irel++)
2565 {
2566 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2567 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2568 unsigned int indx;
2569 struct elf_link_hash_entry *h;
2570
2571 if (r_type != R_386_GOT32)
2572 continue;
2573
2574 /* Get the symbol referred to by the reloc. */
2575 if (r_symndx < symtab_hdr->sh_info)
2576 {
2577 Elf_Internal_Sym *isym;
2578
2579 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2580 abfd, r_symndx);
2581
2582 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2583 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
2584 && bfd_get_8 (input_bfd,
2585 contents + irel->r_offset - 2) == 0x8b)
2586 {
2587 bfd_put_8 (output_bfd, 0x8d,
2588 contents + irel->r_offset - 2);
2589 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2590 if (local_got_refcounts != NULL
2591 && local_got_refcounts[r_symndx] > 0)
2592 local_got_refcounts[r_symndx] -= 1;
2593 changed_contents = TRUE;
2594 changed_relocs = TRUE;
2595 }
2596 continue;
2597 }
2598
2599 indx = r_symndx - symtab_hdr->sh_info;
2600 h = elf_sym_hashes (abfd)[indx];
2601 BFD_ASSERT (h != NULL);
2602
2603 while (h->root.type == bfd_link_hash_indirect
2604 || h->root.type == bfd_link_hash_warning)
2605 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2606
3f65f599
L		 2607 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
2608 optimizing _DYNAMIC since ld.so may use its link-time address. */
daa67607
L		 2609 if (h->def_regular
2610 && h->type != STT_GNU_IFUNC
9637f6ef 2611 && h != htab->elf.hdynamic
daa67607
L		 2612 && SYMBOL_REFERENCES_LOCAL (link_info, h)
2613 && bfd_get_8 (input_bfd,
2614 contents + irel->r_offset - 2) == 0x8b)
2615 {
2616 bfd_put_8 (output_bfd, 0x8d,
2617 contents + irel->r_offset - 2);
2618 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2619 if (h->got.refcount > 0)
2620 h->got.refcount -= 1;
2621 changed_contents = TRUE;
2622 changed_relocs = TRUE;
2623 }
2624 }
2625
2626 if (contents != NULL
2627 && elf_section_data (sec)->this_hdr.contents != contents)
2628 {
2629 if (!changed_contents && !link_info->keep_memory)
2630 free (contents);
2631 else
2632 {
2633 /* Cache the section contents for elf_link_input_bfd. */
2634 elf_section_data (sec)->this_hdr.contents = contents;
2635 }
2636 }
2637
2638 if (elf_section_data (sec)->relocs != internal_relocs)
2639 {
2640 if (!changed_relocs)
2641 free (internal_relocs);
2642 else
2643 elf_section_data (sec)->relocs = internal_relocs;
2644 }
2645
2646 return TRUE;
2647
2648 error_return:
2649 if (contents != NULL
2650 && elf_section_data (sec)->this_hdr.contents != contents)
2651 free (contents);
2652 if (internal_relocs != NULL
2653 && elf_section_data (sec)->relocs != internal_relocs)
2654 free (internal_relocs);
2655 return FALSE;
2656}
2657
252b5132
RH		 2658/* Set the sizes of the dynamic sections. */
2659
b34976b6 2660static bfd_boolean
23209a78 2661elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2662{
6725bdbf 2663 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2664 bfd *dynobj;
2665 asection *s;
b34976b6 2666 bfd_boolean relocs;
0c715baa 2667 bfd *ibfd;
252b5132 2668
6725bdbf 2669 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2670 if (htab == NULL)
2671 return FALSE;
ebe50bae 2672 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2673 if (dynobj == NULL)
2674 abort ();
252b5132 2675
ebe50bae 2676 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2677 {
2678 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2679 if (info->executable)
252b5132 2680 {
3d4d4302 2681 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 2682 if (s == NULL)
2683 abort ();
eea6121a 2684 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2685 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2686 }
161d71a6 2687 }
6725bdbf 2688
0c715baa
AM		 2689 /* Set up .got offsets for local syms, and space for local dynamic
2690 relocs. */
2691 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 2692 {
2693 bfd_signed_vma *local_got;
2694 bfd_signed_vma *end_local_got;
13ae64f3 2695 char *local_tls_type;
67a4f2b7 2696 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2697 bfd_size_type locsymcount;
2698 Elf_Internal_Shdr *symtab_hdr;
2699 asection *srel;
6725bdbf 2700
0ffa91dd 2701 if (! is_i386_elf (ibfd))
161d71a6 2702 continue;
6725bdbf 2703
0c715baa
AM		 2704 for (s = ibfd->sections; s != NULL; s = s->next)
2705 {
e03a8ed8 2706 struct elf_dyn_relocs *p;
0c715baa 2707
daa67607
L		 2708 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2709 return FALSE;
2710
e03a8ed8 2711 for (p = ((struct elf_dyn_relocs *)
e81d3500 2712 elf_section_data (s)->local_dynrel);
ec338859
AM		 2713 p != NULL;
2714 p = p->next)
0c715baa 2715 {
ec338859
AM		 2716 if (!bfd_is_abs_section (p->sec)
2717 && bfd_is_abs_section (p->sec->output_section))
2718 {
2719 /* Input section has been discarded, either because
2720 it is a copy of a linkonce section or due to
2721 linker script /DISCARD/, so we'll be discarding
2722 the relocs too. */
2723 }
23209a78 2724 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2725 && strcmp (p->sec->output_section->name,
2726 ".tls_vars") == 0)
2727 {
2728 /* Relocations in vxworks .tls_vars sections are
2729 handled specially by the loader. */
2730 }
248866a8 2731 else if (p->count != 0)
ec338859
AM		 2732 {
2733 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2734 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2735 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2736 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2737 {
2738 info->flags |= DF_TEXTREL;
2739 if (info->warn_shared_textrel && info->shared)
2740 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
2741 p->sec->owner, p->sec);
b70321a2 2742 }
ec338859 2743 }
0c715baa
AM		 2744 }
2745 }
2746
2747 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2748 if (!local_got)
2749 continue;
6725bdbf 2750
0ffa91dd 2751 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2752 locsymcount = symtab_hdr->sh_info;
2753 end_local_got = local_got + locsymcount;
13ae64f3 2754 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2755 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2756 s = htab->elf.sgot;
2757 srel = htab->elf.srelgot;
67a4f2b7
AO		 2758 for (; local_got < end_local_got;
2759 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2760 {
67a4f2b7 2761 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2762 if (*local_got > 0)
6725bdbf 2763 {
67a4f2b7
AO		 2764 if (GOT_TLS_GDESC_P (*local_tls_type))
2765 {
6de2ae4a 2766 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2767 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2768 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2769 *local_got = (bfd_vma) -2;
2770 }
2771 if (! GOT_TLS_GDESC_P (*local_tls_type)
2772 || GOT_TLS_GD_P (*local_tls_type))
2773 {
2774 *local_got = s->size;
2775 s->size += 4;
2776 if (GOT_TLS_GD_P (*local_tls_type)
2777 || *local_tls_type == GOT_TLS_IE_BOTH)
2778 s->size += 4;
2779 }
13ae64f3 2780 if (info->shared
67a4f2b7 2781 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2782 || (*local_tls_type & GOT_TLS_IE))
2783 {
2784 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2785 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2786 else if (GOT_TLS_GD_P (*local_tls_type)
2787 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2788 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2789 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2790 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2791 }
6725bdbf 2792 }
161d71a6
L		 2793 else
2794 *local_got = (bfd_vma) -1;
6725bdbf 2795 }
252b5132 2796 }
6725bdbf 2797
13ae64f3
JJ		 2798 if (htab->tls_ldm_got.refcount > 0)
2799 {
2800 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2801 relocs. */
6de2ae4a
L		 2802 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2803 htab->elf.sgot->size += 8;
2804 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2805 }
2806 else
2807 htab->tls_ldm_got.offset = -1;
2808
0c715baa
AM		 2809 /* Allocate global sym .plt and .got entries, and space for global
2810 sym dynamic relocs. */
eb4ff4d6 2811 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2812
c25bc9fc
L		 2813 /* Allocate .plt and .got entries, and space for local symbols. */
2814 htab_traverse (htab->loc_hash_table,
2815 elf_i386_allocate_local_dynrelocs,
2816 info);
2817
67a4f2b7
AO		 2818 /* For every jump slot reserved in the sgotplt, reloc_count is
2819 incremented. However, when we reserve space for TLS descriptors,
2820 it's not incremented, so in order to compute the space reserved
2821 for them, it suffices to multiply the reloc count by the jump
e1f98742 2822 slot size.
caa0075c 2823
e1f98742
L		 2824 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2825 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2826 if (htab->elf.srelplt)
e1f98742
L		 2827 {
2828 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2829 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2830 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2831 }
2832 else if (htab->elf.irelplt)
2833 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2834
67a4f2b7 2835
a7b16ceb
L		 2836 if (htab->elf.sgotplt)
2837 {
2838 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2839 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 2840 if ((htab->elf.hgot == NULL
2841 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 2842 && (htab->elf.sgotplt->size
2843 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2844 && (htab->elf.splt == NULL
2845 || htab->elf.splt->size == 0)
2846 && (htab->elf.sgot == NULL
2847 || htab->elf.sgot->size == 0)
2848 && (htab->elf.iplt == NULL
2849 || htab->elf.iplt->size == 0)
2850 && (htab->elf.igotplt == NULL
2851 || htab->elf.igotplt->size == 0))
2852 htab->elf.sgotplt->size = 0;
2853 }
2854
9a2a56cc
AM		 2855
2856 if (htab->plt_eh_frame != NULL
2857 && htab->elf.splt != NULL
2858 && htab->elf.splt->size != 0
2859 && !bfd_is_abs_section (htab->elf.splt->output_section)
2860 && _bfd_elf_eh_frame_present (info))
2861 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
2862
5a15f56f
AM		 2863 /* We now have determined the sizes of the various dynamic sections.
2864 Allocate memory for them. */
b34976b6 2865 relocs = FALSE;
252b5132
RH		 2866 for (s = dynobj->sections; s != NULL; s = s->next)
2867 {
eac338cf
PB		 2868 bfd_boolean strip_section = TRUE;
2869
252b5132
RH		 2870 if ((s->flags & SEC_LINKER_CREATED) == 0)
2871 continue;
2872
6de2ae4a 2873 if (s == htab->elf.splt
9a2a56cc 2874 || s == htab->elf.sgot)
252b5132 2875 {
6725bdbf
AM		 2876 /* Strip this section if we don't need it; see the
2877 comment below. */
eac338cf
PB		 2878 /* We'd like to strip these sections if they aren't needed, but if
2879 we've exported dynamic symbols from them we must leave them.
2880 It's too late to tell BFD to get rid of the symbols. */
2881
7325306f 2882 if (htab->elf.hplt != NULL)
eac338cf 2883 strip_section = FALSE;
252b5132 2884 }
9a2a56cc
AM		 2885 else if (s == htab->elf.sgotplt
2886 || s == htab->elf.iplt
2887 || s == htab->elf.igotplt
2888 || s == htab->plt_eh_frame
2889 || s == htab->sdynbss)
2890 {
2891 /* Strip these too. */
2892 }
0112cd26 2893 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2894 {
6de2ae4a
L		 2895 if (s->size != 0
2896 && s != htab->elf.srelplt
2897 && s != htab->srelplt2)
b34976b6 2898 relocs = TRUE;
252b5132 2899
0ac8d2ca
AM		 2900 /* We use the reloc_count field as a counter if we need
2901 to copy relocs into the output file. */
5ae0bfb6 2902 s->reloc_count = 0;
252b5132 2903 }
6725bdbf 2904 else
252b5132
RH		 2905 {
2906 /* It's not one of our sections, so don't allocate space. */
2907 continue;
2908 }
2909
c456f082 2910 if (s->size == 0)
252b5132 2911 {
0ac8d2ca
AM		 2912 /* If we don't need this section, strip it from the
2913 output file. This is mostly to handle .rel.bss and
2914 .rel.plt. We must create both sections in
2915 create_dynamic_sections, because they must be created
2916 before the linker maps input sections to output
2917 sections. The linker does that before
2918 adjust_dynamic_symbol is called, and it is that
2919 function which decides whether anything needs to go
2920 into these sections. */
c456f082
AM		 2921 if (strip_section)
2922 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2923 continue;
2924 }
2925
c456f082
AM		 2926 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2927 continue;
2928
f69da49f
AM		 2929 /* Allocate memory for the section contents. We use bfd_zalloc
2930 here in case unused entries are not reclaimed before the
2931 section's contents are written out. This should not happen,
2932 but this way if it does, we get a R_386_NONE reloc instead
2933 of garbage. */
a50b1753 2934 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 2935 if (s->contents == NULL)
b34976b6 2936 return FALSE;
252b5132
RH		 2937 }
2938
e41b3a13 2939 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 2940 && htab->plt_eh_frame->contents != NULL)
2941 {
2942 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
2943 sizeof (elf_i386_eh_frame_plt));
2944 bfd_put_32 (dynobj, htab->elf.splt->size,
2945 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
2946 }
e41b3a13 2947
ebe50bae 2948 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2949 {
2950 /* Add some entries to the .dynamic section. We fill in the
2951 values later, in elf_i386_finish_dynamic_sections, but we
2952 must add the entries now so that we get the correct size for
2953 the .dynamic section. The DT_DEBUG entry is filled in by the
2954 dynamic linker and used by the debugger. */
dc810e39 2955#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2956 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2957
36af4a4e 2958 if (info->executable)
252b5132 2959 {
dc810e39 2960 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2961 return FALSE;
252b5132
RH		 2962 }
2963
6de2ae4a 2964 if (htab->elf.splt->size != 0)
252b5132 2965 {
dc810e39
AM		 2966 if (!add_dynamic_entry (DT_PLTGOT, 0)
2967 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2968 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2969 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2970 return FALSE;
252b5132
RH		 2971 }
2972
2973 if (relocs)
2974 {
dc810e39
AM		 2975 if (!add_dynamic_entry (DT_REL, 0)
2976 || !add_dynamic_entry (DT_RELSZ, 0)
2977 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 2978 return FALSE;
252b5132 2979
0c715baa
AM		 2980 /* If any dynamic relocs apply to a read-only section,
2981 then we need a DT_TEXTREL entry. */
248866a8 2982 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 2983 elf_link_hash_traverse (&htab->elf,
2984 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 2985
2986 if ((info->flags & DF_TEXTREL) != 0)
2987 {
2988 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2989 return FALSE;
0c715baa 2990 }
252b5132 2991 }
23209a78 2992 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 2993 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2994 return FALSE;
252b5132 2995 }
dc810e39 2996#undef add_dynamic_entry
252b5132 2997
b34976b6 2998 return TRUE;
252b5132
RH		 2999}
3000
67a4f2b7
AO		 3001static bfd_boolean
3002elf_i386_always_size_sections (bfd *output_bfd,
3003 struct bfd_link_info *info)
3004{
3005 asection *tls_sec = elf_hash_table (info)->tls_sec;
3006
3007 if (tls_sec)
3008 {
3009 struct elf_link_hash_entry *tlsbase;
3010
3011 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3012 "_TLS_MODULE_BASE_",
3013 FALSE, FALSE, FALSE);
3014
3015 if (tlsbase && tlsbase->type == STT_TLS)
3016 {
4dfe6ac6 3017 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3018 struct bfd_link_hash_entry *bh = NULL;
3019 const struct elf_backend_data *bed
3020 = get_elf_backend_data (output_bfd);
3021
4dfe6ac6
NC		 3022 htab = elf_i386_hash_table (info);
3023 if (htab == NULL)
3024 return FALSE;
3025
67a4f2b7
AO		 3026 if (!(_bfd_generic_link_add_one_symbol
3027 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3028 tls_sec, 0, NULL, FALSE,
3029 bed->collect, &bh)))
3030 return FALSE;
9f03412a 3031
4dfe6ac6 3032 htab->tls_module_base = bh;
9f03412a 3033
67a4f2b7
AO		 3034 tlsbase = (struct elf_link_hash_entry *)bh;
3035 tlsbase->def_regular = 1;
3036 tlsbase->other = STV_HIDDEN;
3037 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3038 }
3039 }
3040
3041 return TRUE;
3042}
3043
38701953
AM		 3044/* Set the correct type for an x86 ELF section. We do this by the
3045 section name, which is a hack, but ought to work. */
3046
b34976b6 3047static bfd_boolean
55fd94b0
AM		 3048elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3049 Elf_Internal_Shdr *hdr,
3050 asection *sec)
38701953 3051{
91d6fa6a 3052 const char *name;
38701953
AM		 3053
3054 name = bfd_get_section_name (abfd, sec);
3055
3056 /* This is an ugly, but unfortunately necessary hack that is
3057 needed when producing EFI binaries on x86. It tells
3058 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3059 containing ELF relocation info. We need this hack in order to
3060 be able to generate ELF binaries that can be translated into
3061 EFI applications (which are essentially COFF objects). Those
3062 files contain a COFF ".reloc" section inside an ELFNN object,
3063 which would normally cause BFD to segfault because it would
3064 attempt to interpret this section as containing relocation
3065 entries for section "oc". With this hack enabled, ".reloc"
3066 will be treated as a normal data section, which will avoid the
3067 segfault. However, you won't be able to create an ELFNN binary
3068 with a section named "oc" that needs relocations, but that's
3069 the kind of ugly side-effects you get when detecting section
3070 types based on their names... In practice, this limitation is
3071 unlikely to bite. */
3072 if (strcmp (name, ".reloc") == 0)
3073 hdr->sh_type = SHT_PROGBITS;
3074
b34976b6 3075 return TRUE;
38701953
AM		 3076}
3077
9f03412a
AO		 3078/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3079 executables. Rather than setting it to the beginning of the TLS
3080 section, we have to set it to the end. This function may be called
3081 multiple times, it is idempotent. */
3082
3083static void
eb4ff4d6 3084elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3085{
4dfe6ac6 3086 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3087 struct bfd_link_hash_entry *base;
3088
3089 if (!info->executable)
3090 return;
3091
4dfe6ac6
NC		 3092 htab = elf_i386_hash_table (info);
3093 if (htab == NULL)
3094 return;
9f03412a 3095
4dfe6ac6
NC		 3096 base = htab->tls_module_base;
3097 if (base == NULL)
9f03412a
AO		 3098 return;
3099
4dfe6ac6 3100 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3101}
3102
13ae64f3
JJ		 3103/* Return the base VMA address which should be subtracted from real addresses
3104 when resolving @dtpoff relocation.
3105 This is PT_TLS segment p_vaddr. */
3106
3107static bfd_vma
eb4ff4d6 3108elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3109{
e1918d23
AM		 3110 /* If tls_sec is NULL, we should have signalled an error already. */
3111 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3112 return 0;
e1918d23 3113 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3114}
3115
3116/* Return the relocation value for @tpoff relocation
3117 if STT_TLS virtual address is ADDRESS. */
3118
3119static bfd_vma
eb4ff4d6 3120elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3121{
e1918d23 3122 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3123 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3124 bfd_vma static_tls_size;
13ae64f3 3125
e1918d23
AM		 3126 /* If tls_sec is NULL, we should have signalled an error already. */
3127 if (htab->tls_sec == NULL)
6a30718d 3128 return 0;
7dc98aea
RO		 3129
3130 /* Consider special static TLS alignment requirements. */
3131 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3132 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3133}
3134
252b5132
RH		 3135/* Relocate an i386 ELF section. */
3136
b34976b6 3137static bfd_boolean
55fd94b0
AM		 3138elf_i386_relocate_section (bfd *output_bfd,
3139 struct bfd_link_info *info,
3140 bfd *input_bfd,
3141 asection *input_section,
3142 bfd_byte *contents,
3143 Elf_Internal_Rela *relocs,
3144 Elf_Internal_Sym *local_syms,
3145 asection **local_sections)
252b5132 3146{
6725bdbf 3147 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3148 Elf_Internal_Shdr *symtab_hdr;
3149 struct elf_link_hash_entry **sym_hashes;
3150 bfd_vma *local_got_offsets;
67a4f2b7 3151 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3152 Elf_Internal_Rela *rel;
3153 Elf_Internal_Rela *relend;
3348747a 3154 bfd_boolean is_vxworks_tls;
25e762b9 3155 unsigned plt_entry_size;
252b5132 3156
0ffa91dd 3157 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3158
6725bdbf 3159 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3160 if (htab == NULL)
3161 return FALSE;
0ffa91dd 3162 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3163 sym_hashes = elf_sym_hashes (input_bfd);
3164 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3165 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3166 /* We have to handle relocations in vxworks .tls_vars sections
3167 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3168 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3169 && info->shared
3348747a
NS		 3170 && !strcmp (input_section->output_section->name,
3171 ".tls_vars"));
252b5132 3172
eb4ff4d6 3173 elf_i386_set_tls_module_base (info);
9f03412a 3174
25e762b9
RM		 3175 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3176
252b5132
RH		 3177 rel = relocs;
3178 relend = relocs + input_section->reloc_count;
3179 for (; rel < relend; rel++)
3180 {
13ae64f3 3181 unsigned int r_type;
252b5132
RH		 3182 reloc_howto_type *howto;
3183 unsigned long r_symndx;
3184 struct elf_link_hash_entry *h;
3185 Elf_Internal_Sym *sym;
3186 asection *sec;
67a4f2b7 3187 bfd_vma off, offplt;
252b5132 3188 bfd_vma relocation;
b34976b6 3189 bfd_boolean unresolved_reloc;
252b5132 3190 bfd_reloc_status_type r;
1b452ec6 3191 unsigned int indx;
13ae64f3 3192 int tls_type;
1788fc08 3193 bfd_vma st_size;
252b5132
RH		 3194
3195 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3196 if (r_type == R_386_GNU_VTINHERIT
3197 || r_type == R_386_GNU_VTENTRY)
252b5132 3198 continue;
dc47f327 3199
55fd94b0 3200 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3201 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3202 >= R_386_ext - R_386_standard)
3203 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3204 >= R_386_irelative - R_386_ext))
252b5132 3205 {
6ba842b6 3206 (*_bfd_error_handler)
d003868e
AM		 3207 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3208 input_bfd, input_section, r_type);
252b5132 3209 bfd_set_error (bfd_error_bad_value);
b34976b6 3210 return FALSE;
252b5132 3211 }
1b452ec6 3212 howto = elf_howto_table + indx;
252b5132
RH		 3213
3214 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3215 h = NULL;
3216 sym = NULL;
3217 sec = NULL;
b34976b6 3218 unresolved_reloc = FALSE;
252b5132
RH		 3219 if (r_symndx < symtab_hdr->sh_info)
3220 {
3221 sym = local_syms + r_symndx;
3222 sec = local_sections[r_symndx];
3223 relocation = (sec->output_section->vma
3224 + sec->output_offset
3225 + sym->st_value);
1788fc08 3226 st_size = sym->st_size;
ab96bf03
AM		 3227
3228 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3229 && ((sec->flags & SEC_MERGE) != 0
3230 || (info->relocatable
3231 && sec->output_offset != 0)))
f8df10f4 3232 {
f8df10f4 3233 bfd_vma addend;
4a335f3d 3234 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3235
4a335f3d 3236 switch (howto->size)
f8df10f4 3237 {
4a335f3d
AM		 3238 case 0:
3239 addend = bfd_get_8 (input_bfd, where);
3240 if (howto->pc_relative)
3241 {
3242 addend = (addend ^ 0x80) - 0x80;
3243 addend += 1;
3244 }
3245 break;
3246 case 1:
3247 addend = bfd_get_16 (input_bfd, where);
3248 if (howto->pc_relative)
3249 {
3250 addend = (addend ^ 0x8000) - 0x8000;
3251 addend += 2;
3252 }
3253 break;
3254 case 2:
3255 addend = bfd_get_32 (input_bfd, where);
3256 if (howto->pc_relative)
3257 {
3258 addend = (addend ^ 0x80000000) - 0x80000000;
3259 addend += 4;
3260 }
3261 break;
3262 default:
3263 abort ();
f8df10f4
JJ		 3264 }
3265
ab96bf03
AM		 3266 if (info->relocatable)
3267 addend += sec->output_offset;
3268 else
3269 {
3270 asection *msec = sec;
3271 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3272 addend);
3273 addend -= relocation;
3274 addend += msec->output_section->vma + msec->output_offset;
3275 }
4a335f3d
AM		 3276
3277 switch (howto->size)
3278 {
3279 case 0:
16a10388 3280 /* FIXME: overflow checks. */
4a335f3d
AM		 3281 if (howto->pc_relative)
3282 addend -= 1;
3283 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3284 break;
3285 case 1:
3286 if (howto->pc_relative)
3287 addend -= 2;
3288 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3289 break;
3290 case 2:
3291 if (howto->pc_relative)
3292 addend -= 4;
3293 bfd_put_32 (input_bfd, addend, where);
3294 break;
3295 }
f8df10f4 3296 }
1f85278f
L		 3297 else if (!info->relocatable
3298 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3299 {
3300 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3301 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3302 FALSE);
c25bc9fc
L		 3303 if (h == NULL)
3304 abort ();
3305
23209a78 3306 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3307 h->root.u.def.value = sym->st_value;
3308 h->root.u.def.section = sec;
3309 }
252b5132
RH		 3310 }
3311 else
3312 {
3d540e93 3313 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3314 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3315
b2a8e766
AM		 3316 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3317 r_symndx, symtab_hdr, sym_hashes,
3318 h, sec, relocation,
62d887d4 3319 unresolved_reloc, warned, ignored);
1788fc08 3320 st_size = h->size;
252b5132
RH		 3321 }
3322
dbaa2011 3323 if (sec != NULL && discarded_section (sec))
0672748a 3324 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3325 rel, 1, relend, howto, 0, contents);
9635fe29 3326
ab96bf03
AM		 3327 if (info->relocatable)
3328 continue;
3329
cbe950e9
L		 3330 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3331 it here if it is defined in a non-shared object. */
3332 if (h != NULL
3333 && h->type == STT_GNU_IFUNC
3334 && h->def_regular)
3335 {
3336 asection *plt, *gotplt, *base_got;
3337 bfd_vma plt_index;
4c544807 3338 const char *name;
cbe950e9
L		 3339
3340 if ((input_section->flags & SEC_ALLOC) == 0
3341 || h->plt.offset == (bfd_vma) -1)
3342 abort ();
3343
3344 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3345 if (htab->elf.splt != NULL)
cbe950e9 3346 {
6de2ae4a
L		 3347 plt = htab->elf.splt;
3348 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3349 }
3350 else
3351 {
6de2ae4a
L		 3352 plt = htab->elf.iplt;
3353 gotplt = htab->elf.igotplt;
cbe950e9
L		 3354 }
3355
3356 relocation = (plt->output_section->vma
3357 + plt->output_offset + h->plt.offset);
3358
3359 switch (r_type)
3360 {
3361 default:
4c544807
L		 3362 if (h->root.root.string)
3363 name = h->root.root.string;
3364 else
3365 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3366 NULL);
cbe950e9
L		 3367 (*_bfd_error_handler)
3368 (_("%B: relocation %s against STT_GNU_IFUNC "
3369 "symbol `%s' isn't handled by %s"), input_bfd,
3370 elf_howto_table[r_type].name,
4c544807 3371 name, __FUNCTION__);
cbe950e9
L		 3372 bfd_set_error (bfd_error_bad_value);
3373 return FALSE;
3374
3375 case R_386_32:
710ab287 3376 /* Generate dynamic relcoation only when there is a
c293fa49 3377 non-GOT reference in a shared object. */
710ab287
L		 3378 if (info->shared && h->non_got_ref)
3379 {
3380 Elf_Internal_Rela outrel;
710ab287
L		 3381 asection *sreloc;
3382 bfd_vma offset;
3383
c25bc9fc
L		 3384 /* Need a dynamic relocation to get the real function
3385 adddress. */
710ab287
L		 3386 offset = _bfd_elf_section_offset (output_bfd,
3387 info,
3388 input_section,
3389 rel->r_offset);
3390 if (offset == (bfd_vma) -1
3391 || offset == (bfd_vma) -2)
3392 abort ();
3393
3394 outrel.r_offset = (input_section->output_section->vma
3395 + input_section->output_offset
3396 + offset);
3397
3398 if (h->dynindx == -1
44c4ea11
L		 3399 || h->forced_local
3400 || info->executable)
710ab287
L		 3401 {
3402 /* This symbol is resolved locally. */
56b8aada
L		 3403 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3404 bfd_put_32 (output_bfd,
3405 (h->root.u.def.value
3406 + h->root.u.def.section->output_section->vma
3407 + h->root.u.def.section->output_offset),
3408 contents + offset);
710ab287
L		 3409 }
3410 else
56b8aada 3411 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3412
6de2ae4a 3413 sreloc = htab->elf.irelifunc;
59d6ffb2 3414 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3415
3416 /* If this reloc is against an external symbol, we
3417 do not want to fiddle with the addend. Otherwise,
3418 we need to include the symbol value so that it
3419 becomes an addend for the dynamic reloc. For an
3420 internal symbol, we have updated addend. */
56b8aada 3421 continue;
710ab287 3422 }
d59a60e9 3423 /* FALLTHROUGH */
cbe950e9
L		 3424 case R_386_PC32:
3425 case R_386_PLT32:
3426 goto do_relocation;
3427
3428 case R_386_GOT32:
6de2ae4a 3429 base_got = htab->elf.sgot;
cbe950e9
L		 3430 off = h->got.offset;
3431
7afd84dc 3432 if (base_got == NULL)
cbe950e9
L		 3433 abort ();
3434
7afd84dc 3435 if (off == (bfd_vma) -1)
cbe950e9 3436 {
7afd84dc
L		 3437 /* We can't use h->got.offset here to save state, or
3438 even just remember the offset, as finish_dynamic_symbol
3439 would use that as offset into .got. */
6bbec505 3440
6de2ae4a 3441 if (htab->elf.splt != NULL)
7afd84dc 3442 {
25e762b9 3443 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3444 off = (plt_index + 3) * 4;
6de2ae4a 3445 base_got = htab->elf.sgotplt;
7afd84dc 3446 }
cbe950e9
L		 3447 else
3448 {
25e762b9 3449 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3450 off = plt_index * 4;
6de2ae4a 3451 base_got = htab->elf.igotplt;
7afd84dc
L		 3452 }
3453
3454 if (h->dynindx == -1
3455 || h->forced_local
3456 || info->symbolic)
3457 {
3458 /* This references the local defitionion. We must
3459 initialize this entry in the global offset table.
3460 Since the offset must always be a multiple of 8,
3461 we use the least significant bit to record
3462 whether we have initialized it already.
3463
3464 When doing a dynamic link, we create a .rela.got
3465 relocation entry to initialize the value. This
3466 is done in the finish_dynamic_symbol routine. */
3467 if ((off & 1) != 0)
3468 off &= ~1;
3469 else
3470 {
3471 bfd_put_32 (output_bfd, relocation,
3472 base_got->contents + off);
3473 h->got.offset |= 1;
3474 }
cbe950e9 3475 }
cbe950e9 3476
7afd84dc 3477 relocation = off;
cbe950e9 3478
7afd84dc 3479 /* Adjust for static executables. */
6de2ae4a 3480 if (htab->elf.splt == NULL)
7afd84dc
L		 3481 relocation += gotplt->output_offset;
3482 }
3483 else
0018b0a3
L		 3484 {
3485 relocation = (base_got->output_section->vma
3486 + base_got->output_offset + off
3487 - gotplt->output_section->vma
3488 - gotplt->output_offset);
3489 /* Adjust for static executables. */
6de2ae4a 3490 if (htab->elf.splt == NULL)
0018b0a3
L		 3491 relocation += gotplt->output_offset;
3492 }
3493
cbe950e9
L		 3494 goto do_relocation;
3495
3496 case R_386_GOTOFF:
3497 relocation -= (gotplt->output_section->vma
3498 + gotplt->output_offset);
3499 goto do_relocation;
3500 }
3501 }
3502
252b5132
RH		 3503 switch (r_type)
3504 {
3505 case R_386_GOT32:
3506 /* Relocation is to the entry for this symbol in the global
3507 offset table. */
6de2ae4a 3508 if (htab->elf.sgot == NULL)
ffb2e45b 3509 abort ();
252b5132
RH		 3510
3511 if (h != NULL)
3512 {
b34976b6 3513 bfd_boolean dyn;
252b5132
RH		 3514
3515 off = h->got.offset;
ebe50bae 3516 dyn = htab->elf.dynamic_sections_created;
26e41594 3517 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3518 || (info->shared
586119b3 3519 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3520 || (ELF_ST_VISIBILITY (h->other)
3521 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3522 {
3523 /* This is actually a static link, or it is a
3524 -Bsymbolic link and the symbol is defined
3525 locally, or the symbol was forced to be local
3526 because of a version file. We must initialize
3527 this entry in the global offset table. Since the
3528 offset must always be a multiple of 4, we use the
3529 least significant bit to record whether we have
3530 initialized it already.
3531
3532 When doing a dynamic link, we create a .rel.got
3533 relocation entry to initialize the value. This
3534 is done in the finish_dynamic_symbol routine. */
3535 if ((off & 1) != 0)
3536 off &= ~1;
3537 else
3538 {
3539 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3540 htab->elf.sgot->contents + off);
252b5132
RH		 3541 h->got.offset |= 1;
3542 }
3543 }
8c694914 3544 else
b34976b6 3545 unresolved_reloc = FALSE;
252b5132
RH		 3546 }
3547 else
3548 {
ffb2e45b
AM		 3549 if (local_got_offsets == NULL)
3550 abort ();
252b5132
RH		 3551
3552 off = local_got_offsets[r_symndx];
3553
3554 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3555 the least significant bit to record whether we have
3556 already generated the necessary reloc. */
252b5132
RH		 3557 if ((off & 1) != 0)
3558 off &= ~1;
3559 else
3560 {
6725bdbf 3561 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3562 htab->elf.sgot->contents + off);
252b5132
RH		 3563
3564 if (info->shared)
3565 {
947216bf
AM		 3566 asection *s;
3567 Elf_Internal_Rela outrel;
252b5132 3568
6de2ae4a 3569 s = htab->elf.srelgot;
947216bf 3570 if (s == NULL)
ffb2e45b 3571 abort ();
252b5132 3572
6de2ae4a
L		 3573 outrel.r_offset = (htab->elf.sgot->output_section->vma
3574 + htab->elf.sgot->output_offset
252b5132
RH		 3575 + off);
3576 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 3577 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 3578 }
3579
3580 local_got_offsets[r_symndx] |= 1;
3581 }
252b5132
RH		 3582 }
3583
ffb2e45b
AM		 3584 if (off >= (bfd_vma) -2)
3585 abort ();
3586
6de2ae4a
L		 3587 relocation = htab->elf.sgot->output_section->vma
3588 + htab->elf.sgot->output_offset + off
3589 - htab->elf.sgotplt->output_section->vma
3590 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3591 break;
3592
3593 case R_386_GOTOFF:
3594 /* Relocation is relative to the start of the global offset
3595 table. */
3596
90f487df
L		 3597 /* Check to make sure it isn't a protected function symbol
3598 for shared library since it may not be local when used
41bed6dd
L		 3599 as function address. We also need to make sure that a
3600 symbol is defined locally. */
3601 if (info->shared && h)
90f487df 3602 {
41bed6dd
L		 3603 if (!h->def_regular)
3604 {
3605 const char *v;
3606
3607 switch (ELF_ST_VISIBILITY (h->other))
3608 {
3609 case STV_HIDDEN:
3610 v = _("hidden symbol");
3611 break;
3612 case STV_INTERNAL:
3613 v = _("internal symbol");
3614 break;
3615 case STV_PROTECTED:
3616 v = _("protected symbol");
3617 break;
3618 default:
3619 v = _("symbol");
3620 break;
3621 }
3622
3623 (*_bfd_error_handler)
3624 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3625 input_bfd, v, h->root.root.string);
3626 bfd_set_error (bfd_error_bad_value);
3627 return FALSE;
3628 }
3629 else if (!info->executable
bdb892b9 3630 && !SYMBOLIC_BIND (info, h)
41bed6dd
L		 3631 && h->type == STT_FUNC
3632 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3633 {
3634 (*_bfd_error_handler)
3635 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3636 input_bfd, h->root.root.string);
3637 bfd_set_error (bfd_error_bad_value);
3638 return FALSE;
3639 }
90f487df
L		 3640 }
3641
8c37241b
JJ		 3642 /* Note that sgot is not involved in this
3643 calculation. We always want the start of .got.plt. If we
3644 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3645 permitted by the ABI, we might have to change this
3646 calculation. */
6de2ae4a
L		 3647 relocation -= htab->elf.sgotplt->output_section->vma
3648 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3649 break;
3650
3651 case R_386_GOTPC:
3652 /* Use global offset table as symbol value. */
6de2ae4a
L		 3653 relocation = htab->elf.sgotplt->output_section->vma
3654 + htab->elf.sgotplt->output_offset;
b34976b6 3655 unresolved_reloc = FALSE;
252b5132
RH		 3656 break;
3657
3658 case R_386_PLT32:
3659 /* Relocation is to the entry for this symbol in the
3660 procedure linkage table. */
3661
dd5724d5 3662 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3663 without using the procedure linkage table. */
252b5132
RH		 3664 if (h == NULL)
3665 break;
3666
dd5724d5 3667 if (h->plt.offset == (bfd_vma) -1
6de2ae4a 3668 || htab->elf.splt == NULL)
252b5132
RH		 3669 {
3670 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3671 happens when statically linking PIC code, or when
3672 using -Bsymbolic. */
252b5132
RH		 3673 break;
3674 }
3675
6de2ae4a
L		 3676 relocation = (htab->elf.splt->output_section->vma
3677 + htab->elf.splt->output_offset
252b5132 3678 + h->plt.offset);
b34976b6 3679 unresolved_reloc = FALSE;
252b5132
RH		 3680 break;
3681
1788fc08 3682 case R_386_SIZE32:
1788fc08
L		 3683 /* Set to symbol size. */
3684 relocation = st_size;
3685 /* Fall through. */
3686
252b5132
RH		 3687 case R_386_32:
3688 case R_386_PC32:
3348747a
NS		 3689 if ((input_section->flags & SEC_ALLOC) == 0
3690 || is_vxworks_tls)
ec338859
AM		 3691 break;
3692
12d0ee4a 3693 if ((info->shared
ef5aade5
L		 3694 && (h == NULL
3695 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3696 || h->root.type != bfd_link_hash_undefweak)
1788fc08 3697 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3698 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3699 || (ELIMINATE_COPY_RELOCS
3700 && !info->shared
12d0ee4a
AM		 3701 && h != NULL
3702 && h->dynindx != -1
f5385ebf
AM		 3703 && !h->non_got_ref
3704 && ((h->def_dynamic
3705 && !h->def_regular)
28d0b90e 3706 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3707 || h->root.type == bfd_link_hash_undefined)))
252b5132 3708 {
947216bf 3709 Elf_Internal_Rela outrel;
b34976b6 3710 bfd_boolean skip, relocate;
0c715baa 3711 asection *sreloc;
252b5132
RH		 3712
3713 /* When generating a shared object, these relocations
3714 are copied into the output file to be resolved at run
3715 time. */
3716
b34976b6
AM		 3717 skip = FALSE;
3718 relocate = FALSE;
252b5132 3719
c629eae0
JJ		 3720 outrel.r_offset =
3721 _bfd_elf_section_offset (output_bfd, info, input_section,
3722 rel->r_offset);
3723 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3724 skip = TRUE;
0bb2d96a 3725 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3726 skip = TRUE, relocate = TRUE;
252b5132
RH		 3727 outrel.r_offset += (input_section->output_section->vma
3728 + input_section->output_offset);
3729
3730 if (skip)
0bb2d96a 3731 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3732 else if (h != NULL
3733 && h->dynindx != -1
3734 && (r_type == R_386_PC32
3735 || !info->shared
55255dae 3736 || !SYMBOLIC_BIND (info, h)
f5385ebf 3737 || !h->def_regular))
0bb2d96a 3738 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3739 else
3740 {
5a15f56f 3741 /* This symbol is local, or marked to become local. */
b34976b6 3742 relocate = TRUE;
5a15f56f 3743 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3744 }
3745
cbe950e9 3746 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3747
62d78908
L		 3748 if (sreloc == NULL || sreloc->contents == NULL)
3749 {
3750 r = bfd_reloc_notsupported;
3751 goto check_relocation_error;
3752 }
0c715baa 3753
59d6ffb2 3754 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 3755
3756 /* If this reloc is against an external symbol, we do
3757 not want to fiddle with the addend. Otherwise, we
3758 need to include the symbol value so that it becomes
3759 an addend for the dynamic reloc. */
0f88be7a 3760 if (! relocate)
252b5132
RH		 3761 continue;
3762 }
252b5132
RH		 3763 break;
3764
37e55690 3765 case R_386_TLS_IE:
1d85728f 3766 if (!info->executable)
37e55690 3767 {
947216bf 3768 Elf_Internal_Rela outrel;
37e55690 3769 asection *sreloc;
37e55690
JJ		 3770
3771 outrel.r_offset = rel->r_offset
3772 + input_section->output_section->vma
3773 + input_section->output_offset;
3774 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3775 sreloc = elf_section_data (input_section)->sreloc;
3776 if (sreloc == NULL)
3777 abort ();
59d6ffb2 3778 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3779 }
3780 /* Fall through */
3781
13ae64f3 3782 case R_386_TLS_GD:
67a4f2b7
AO		 3783 case R_386_TLS_GOTDESC:
3784 case R_386_TLS_DESC_CALL:
13ae64f3 3785 case R_386_TLS_IE_32:
37e55690 3786 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3787 tls_type = GOT_UNKNOWN;
3788 if (h == NULL && local_got_offsets)
3789 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3790 else if (h != NULL)
142411ca 3791 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3792 if (tls_type == GOT_TLS_IE)
3793 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3794
3795 if (! elf_i386_tls_transition (info, input_bfd,
3796 input_section, contents,
3797 symtab_hdr, sym_hashes,
3798 &r_type, tls_type, rel,
4c544807 3799 relend, h, r_symndx))
142411ca 3800 return FALSE;
13ae64f3
JJ		 3801
3802 if (r_type == R_386_TLS_LE_32)
3803 {
82e51918 3804 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3805 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3806 {
142411ca 3807 unsigned int type;
13ae64f3
JJ		 3808 bfd_vma roff;
3809
3810 /* GD->LE transition. */
13ae64f3 3811 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3812 if (type == 0x04)
3813 {
3814 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3815 Change it into:
3816 movl %gs:0, %eax; subl $foo@tpoff, %eax
3817 (6 byte form of subl). */
13ae64f3
JJ		 3818 memcpy (contents + rel->r_offset - 3,
3819 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3820 roff = rel->r_offset + 5;
13ae64f3
JJ		 3821 }
3822 else
3823 {
142411ca
L		 3824 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3825 Change it into:
3826 movl %gs:0, %eax; subl $foo@tpoff, %eax
3827 (6 byte form of subl). */
3828 memcpy (contents + rel->r_offset - 2,
3829 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3830 roff = rel->r_offset + 6;
13ae64f3 3831 }
eb4ff4d6 3832 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3833 contents + roff);
a3fadc9a 3834 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 3835 rel++;
3836 continue;
3837 }
67a4f2b7
AO		 3838 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3839 {
3840 /* GDesc -> LE transition.
3841 It's originally something like:
3842 leal x@tlsdesc(%ebx), %eax
3843
3844 leal x@ntpoff, %eax
3845
3846 Registers other than %eax may be set up here. */
3847
142411ca 3848 unsigned int val;
67a4f2b7
AO		 3849 bfd_vma roff;
3850
67a4f2b7 3851 roff = rel->r_offset;
67a4f2b7 3852 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3853
3854 /* Now modify the instruction as appropriate. */
3855 /* aoliva FIXME: remove the above and xor the byte
3856 below with 0x86. */
3857 bfd_put_8 (output_bfd, val ^ 0x86,
3858 contents + roff - 1);
eb4ff4d6 3859 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 3860 contents + roff);
3861 continue;
3862 }
3863 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3864 {
3865 /* GDesc -> LE transition.
3866 It's originally:
3867 call *(%eax)
3868 Turn it into:
142411ca 3869 xchg %ax,%ax */
67a4f2b7 3870
67a4f2b7 3871 bfd_vma roff;
6bbec505 3872
67a4f2b7 3873 roff = rel->r_offset;
10efb593 3874 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3875 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3876 continue;
3877 }
37e55690 3878 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 3879 {
142411ca 3880 unsigned int val;
13ae64f3
JJ		 3881
3882 /* IE->LE transition:
37e55690
JJ		 3883 Originally it can be one of:
3884 movl foo, %eax
3885 movl foo, %reg
3886 addl foo, %reg
3887 We change it into:
3888 movl $foo, %eax
3889 movl $foo, %reg
3890 addl $foo, %reg. */
37e55690 3891 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 3892 if (val == 0xa1)
3893 {
3894 /* movl foo, %eax. */
55fd94b0
AM		 3895 bfd_put_8 (output_bfd, 0xb8,
3896 contents + rel->r_offset - 1);
37e55690 3897 }
299bf759 3898 else
37e55690 3899 {
142411ca
L		 3900 unsigned int type;
3901
55fd94b0
AM		 3902 type = bfd_get_8 (input_bfd,
3903 contents + rel->r_offset - 2);
299bf759 3904 switch (type)
26e41594 3905 {
299bf759
L		 3906 case 0x8b:
3907 /* movl */
299bf759
L		 3908 bfd_put_8 (output_bfd, 0xc7,
3909 contents + rel->r_offset - 2);
3910 bfd_put_8 (output_bfd,
3911 0xc0 | ((val >> 3) & 7),
3912 contents + rel->r_offset - 1);
3913 break;
3914 case 0x03:
3915 /* addl */
299bf759
L		 3916 bfd_put_8 (output_bfd, 0x81,
3917 contents + rel->r_offset - 2);
3918 bfd_put_8 (output_bfd,
3919 0xc0 | ((val >> 3) & 7),
3920 contents + rel->r_offset - 1);
3921 break;
3922 default:
3923 BFD_FAIL ();
3924 break;
26e41594 3925 }
37e55690 3926 }
eb4ff4d6 3927 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3928 contents + rel->r_offset);
3929 continue;
3930 }
3931 else
3932 {
3933 unsigned int val, type;
3934
3935 /* {IE_32,GOTIE}->LE transition:
3936 Originally it can be one of:
13ae64f3 3937 subl foo(%reg1), %reg2
13ae64f3 3938 movl foo(%reg1), %reg2
37e55690 3939 addl foo(%reg1), %reg2
13ae64f3
JJ		 3940 We change it into:
3941 subl $foo, %reg2
37e55690
JJ		 3942 movl $foo, %reg2 (6 byte form)
3943 addl $foo, %reg2. */
13ae64f3
JJ		 3944 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3945 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 3946 if (type == 0x8b)
3947 {
3948 /* movl */
13ae64f3
JJ		 3949 bfd_put_8 (output_bfd, 0xc7,
3950 contents + rel->r_offset - 2);
3951 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3952 contents + rel->r_offset - 1);
3953 }
3954 else if (type == 0x2b)
3955 {
3956 /* subl */
13ae64f3
JJ		 3957 bfd_put_8 (output_bfd, 0x81,
3958 contents + rel->r_offset - 2);
3959 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3960 contents + rel->r_offset - 1);
3961 }
37e55690
JJ		 3962 else if (type == 0x03)
3963 {
3964 /* addl */
3965 bfd_put_8 (output_bfd, 0x81,
3966 contents + rel->r_offset - 2);
3967 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3968 contents + rel->r_offset - 1);
3969 }
13ae64f3
JJ		 3970 else
3971 BFD_FAIL ();
37e55690 3972 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 3973 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3974 contents + rel->r_offset);
3975 else
eb4ff4d6 3976 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 3977 contents + rel->r_offset);
13ae64f3
JJ		 3978 continue;
3979 }
3980 }
3981
6de2ae4a 3982 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 3983 abort ();
3984
3985 if (h != NULL)
67a4f2b7
AO		 3986 {
3987 off = h->got.offset;
3988 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
3989 }
13ae64f3
JJ		 3990 else
3991 {
3992 if (local_got_offsets == NULL)
3993 abort ();
3994
3995 off = local_got_offsets[r_symndx];
67a4f2b7 3996 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 3997 }
3998
3999 if ((off & 1) != 0)
4000 off &= ~1;
26e41594 4001 else
13ae64f3 4002 {
947216bf 4003 Elf_Internal_Rela outrel;
91d6fa6a 4004 int dr_type;
67a4f2b7 4005 asection *sreloc;
13ae64f3 4006
6de2ae4a 4007 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4008 abort ();
4009
67a4f2b7
AO		 4010 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4011
4012 if (GOT_TLS_GDESC_P (tls_type))
4013 {
59d6ffb2 4014 bfd_byte *loc;
67a4f2b7
AO		 4015 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4016 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4017 <= htab->elf.sgotplt->size);
4018 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4019 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4020 + offplt
4021 + htab->sgotplt_jump_table_size);
6de2ae4a 4022 sreloc = htab->elf.srelplt;
67a4f2b7 4023 loc = sreloc->contents;
5ae0bfb6
RS		 4024 loc += (htab->next_tls_desc_index++
4025 * sizeof (Elf32_External_Rel));
67a4f2b7 4026 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4027 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4028 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4029 if (indx == 0)
4030 {
4031 BFD_ASSERT (! unresolved_reloc);
4032 bfd_put_32 (output_bfd,
eb4ff4d6 4033 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4034 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4035 + htab->sgotplt_jump_table_size + 4);
4036 }
4037 else
4038 {
4039 bfd_put_32 (output_bfd, 0,
6de2ae4a 4040 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4041 + htab->sgotplt_jump_table_size + 4);
4042 }
4043 }
4044
6de2ae4a 4045 sreloc = htab->elf.srelgot;
67a4f2b7 4046
6de2ae4a
L		 4047 outrel.r_offset = (htab->elf.sgot->output_section->vma
4048 + htab->elf.sgot->output_offset + off);
13ae64f3 4049
67a4f2b7 4050 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4051 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4052 else if (GOT_TLS_GDESC_P (tls_type))
4053 goto dr_done;
37e55690
JJ		 4054 else if (tls_type == GOT_TLS_IE_POS)
4055 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4056 else
4057 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4058
37e55690 4059 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4060 bfd_put_32 (output_bfd,
4061 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4062 htab->elf.sgot->contents + off);
37e55690 4063 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4064 bfd_put_32 (output_bfd,
eb4ff4d6 4065 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4066 htab->elf.sgot->contents + off);
67a4f2b7 4067 else if (dr_type != R_386_TLS_DESC)
c366c25e 4068 bfd_put_32 (output_bfd, 0,
6de2ae4a 4069 htab->elf.sgot->contents + off);
13ae64f3 4070 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4071
59d6ffb2 4072 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4073
67a4f2b7 4074 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4075 {
4076 if (indx == 0)
4077 {
82e51918 4078 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4079 bfd_put_32 (output_bfd,
eb4ff4d6 4080 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4081 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4082 }
4083 else
4084 {
4085 bfd_put_32 (output_bfd, 0,
6de2ae4a 4086 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4087 outrel.r_info = ELF32_R_INFO (indx,
4088 R_386_TLS_DTPOFF32);
4089 outrel.r_offset += 4;
59d6ffb2 4090 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4091 }
4092 }
37e55690
JJ		 4093 else if (tls_type == GOT_TLS_IE_BOTH)
4094 {
4095 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4096 (indx == 0
4097 ? relocation - elf_i386_dtpoff_base (info)
4098 : 0),
6de2ae4a 4099 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4100 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4101 outrel.r_offset += 4;
59d6ffb2 4102 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4103 }
13ae64f3 4104
67a4f2b7 4105 dr_done:
13ae64f3
JJ		 4106 if (h != NULL)
4107 h->got.offset |= 1;
4108 else
4109 local_got_offsets[r_symndx] |= 1;
4110 }
4111
67a4f2b7
AO		 4112 if (off >= (bfd_vma) -2
4113 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4114 abort ();
67a4f2b7
AO		 4115 if (r_type == R_386_TLS_GOTDESC
4116 || r_type == R_386_TLS_DESC_CALL)
4117 {
4118 relocation = htab->sgotplt_jump_table_size + offplt;
4119 unresolved_reloc = FALSE;
4120 }
4121 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4122 {
6de2ae4a
L		 4123 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4124 + htab->elf.sgotplt->output_offset;
4125 relocation = htab->elf.sgot->output_section->vma
4126 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4127 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4128 && tls_type == GOT_TLS_IE_BOTH)
4129 relocation += 4;
4130 if (r_type == R_386_TLS_IE)
8c37241b 4131 relocation += g_o_t;
b34976b6 4132 unresolved_reloc = FALSE;
13ae64f3 4133 }
67a4f2b7 4134 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4135 {
4136 unsigned int val, type;
4137 bfd_vma roff;
4138
4139 /* GD->IE transition. */
13ae64f3 4140 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4141 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4142 if (type == 0x04)
4143 {
4144 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4145 Change it into:
4146 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4147 val >>= 3;
142411ca 4148 roff = rel->r_offset - 3;
13ae64f3
JJ		 4149 }
4150 else
4151 {
4152 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4153 Change it into:
4154 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4155 roff = rel->r_offset - 2;
4156 }
4157 memcpy (contents + roff,
4158 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4159 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4160 /* If foo is used only with foo@gotntpoff(%reg) and
4161 foo@indntpoff, but not with foo@gottpoff(%reg), change
4162 subl $foo@gottpoff(%reg), %eax
4163 into:
4164 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4165 if (tls_type == GOT_TLS_IE_POS)
4166 contents[roff + 6] = 0x03;
8c37241b 4167 bfd_put_32 (output_bfd,
6de2ae4a
L		 4168 htab->elf.sgot->output_section->vma
4169 + htab->elf.sgot->output_offset + off
4170 - htab->elf.sgotplt->output_section->vma
4171 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4172 contents + roff + 8);
4173 /* Skip R_386_PLT32. */
4174 rel++;
4175 continue;
4176 }
67a4f2b7
AO		 4177 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4178 {
4179 /* GDesc -> IE transition.
4180 It's originally something like:
4181 leal x@tlsdesc(%ebx), %eax
4182
4183 Change it to:
142411ca 4184 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4185 or:
4186 movl x@gottpoff(%ebx), %eax # before negl %eax
4187
4188 Registers other than %eax may be set up here. */
4189
67a4f2b7
AO		 4190 bfd_vma roff;
4191
4192 /* First, make sure it's a leal adding ebx to a 32-bit
4193 offset into any register, although it's probably
4194 almost always going to be eax. */
4195 roff = rel->r_offset;
67a4f2b7
AO		 4196
4197 /* Now modify the instruction as appropriate. */
4198 /* To turn a leal into a movl in the form we use it, it
4199 suffices to change the first byte from 0x8d to 0x8b.
4200 aoliva FIXME: should we decide to keep the leal, all
4201 we have to do is remove the statement below, and
4202 adjust the relaxation of R_386_TLS_DESC_CALL. */
4203 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4204
4205 if (tls_type == GOT_TLS_IE_BOTH)
4206 off += 4;
4207
4208 bfd_put_32 (output_bfd,
6de2ae4a
L		 4209 htab->elf.sgot->output_section->vma
4210 + htab->elf.sgot->output_offset + off
4211 - htab->elf.sgotplt->output_section->vma
4212 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4213 contents + roff);
4214 continue;
4215 }
4216 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4217 {
4218 /* GDesc -> IE transition.
4219 It's originally:
4220 call *(%eax)
4221
4222 Change it to:
142411ca 4223 xchg %ax,%ax
67a4f2b7
AO		 4224 or
4225 negl %eax
4226 depending on how we transformed the TLS_GOTDESC above.
4227 */
4228
67a4f2b7
AO		 4229 bfd_vma roff;
4230
67a4f2b7 4231 roff = rel->r_offset;
67a4f2b7
AO		 4232
4233 /* Now modify the instruction as appropriate. */
4234 if (tls_type != GOT_TLS_IE_NEG)
4235 {
10efb593
L		 4236 /* xchg %ax,%ax */
4237 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4238 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4239 }
4240 else
4241 {
4242 /* negl %eax */
4243 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4244 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4245 }
4246
4247 continue;
4248 }
4249 else
4250 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4251 break;
4252
4253 case R_386_TLS_LDM:
142411ca
L		 4254 if (! elf_i386_tls_transition (info, input_bfd,
4255 input_section, contents,
4256 symtab_hdr, sym_hashes,
4257 &r_type, GOT_UNKNOWN, rel,
4c544807 4258 relend, h, r_symndx))
142411ca 4259 return FALSE;
13ae64f3 4260
142411ca
L		 4261 if (r_type != R_386_TLS_LDM)
4262 {
13ae64f3 4263 /* LD->LE transition:
13ae64f3
JJ		 4264 leal foo(%reg), %eax; call ___tls_get_addr.
4265 We change it into:
4266 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4267 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4268 memcpy (contents + rel->r_offset - 2,
4269 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4270 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4271 rel++;
4272 continue;
4273 }
4274
6de2ae4a 4275 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4276 abort ();
4277
4278 off = htab->tls_ldm_got.offset;
4279 if (off & 1)
4280 off &= ~1;
4281 else
4282 {
947216bf 4283 Elf_Internal_Rela outrel;
13ae64f3 4284
6de2ae4a 4285 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4286 abort ();
4287
6de2ae4a
L		 4288 outrel.r_offset = (htab->elf.sgot->output_section->vma
4289 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4290
4291 bfd_put_32 (output_bfd, 0,
6de2ae4a 4292 htab->elf.sgot->contents + off);
13ae64f3 4293 bfd_put_32 (output_bfd, 0,
6de2ae4a 4294 htab->elf.sgot->contents + off + 4);
13ae64f3 4295 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4296 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4297 htab->tls_ldm_got.offset |= 1;
4298 }
6de2ae4a
L		 4299 relocation = htab->elf.sgot->output_section->vma
4300 + htab->elf.sgot->output_offset + off
4301 - htab->elf.sgotplt->output_section->vma
4302 - htab->elf.sgotplt->output_offset;
b34976b6 4303 unresolved_reloc = FALSE;
13ae64f3
JJ		 4304 break;
4305
4306 case R_386_TLS_LDO_32:
959b0961 4307 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4308 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4309 else
4310 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4311 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4312 break;
4313
4314 case R_386_TLS_LE_32:
13ae64f3 4315 case R_386_TLS_LE:
1d85728f 4316 if (!info->executable)
37e55690 4317 {
947216bf 4318 Elf_Internal_Rela outrel;
37e55690 4319 asection *sreloc;
37e55690
JJ		 4320
4321 outrel.r_offset = rel->r_offset
4322 + input_section->output_section->vma
4323 + input_section->output_offset;
4324 if (h != NULL && h->dynindx != -1)
4325 indx = h->dynindx;
4326 else
4327 indx = 0;
4328 if (r_type == R_386_TLS_LE_32)
4329 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4330 else
4331 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4332 sreloc = elf_section_data (input_section)->sreloc;
4333 if (sreloc == NULL)
4334 abort ();
59d6ffb2 4335 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4336 if (indx)
4337 continue;
4338 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4339 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4340 else
eb4ff4d6 4341 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4342 }
4343 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4344 relocation = elf_i386_tpoff (info, relocation);
37e55690 4345 else
eb4ff4d6 4346 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4347 break;
4348
252b5132
RH		 4349 default:
4350 break;
4351 }
4352
239e1f3a
AM		 4353 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4354 because such sections are not SEC_ALLOC and thus ld.so will
4355 not process them. */
8c694914 4356 if (unresolved_reloc
239e1f3a 4357 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4358 && h->def_dynamic)
4359 && _bfd_elf_section_offset (output_bfd, info, input_section,
4360 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4361 {
4362 (*_bfd_error_handler)
843fe662 4363 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4364 input_bfd,
4365 input_section,
6a30718d 4366 (long) rel->r_offset,
843fe662 4367 howto->name,
6a30718d 4368 h->root.root.string);
b34976b6 4369 return FALSE;
6a30718d 4370 }
83be169b 4371
cbe950e9 4372do_relocation:
252b5132
RH		 4373 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4374 contents, rel->r_offset,
55fd94b0 4375 relocation, 0);
252b5132 4376
62d78908 4377check_relocation_error:
cf5c0c5b 4378 if (r != bfd_reloc_ok)
252b5132 4379 {
cf5c0c5b 4380 const char *name;
ffb2e45b 4381
cf5c0c5b
AM		 4382 if (h != NULL)
4383 name = h->root.root.string;
4384 else
4385 {
4386 name = bfd_elf_string_from_elf_section (input_bfd,
4387 symtab_hdr->sh_link,
4388 sym->st_name);
4389 if (name == NULL)
b34976b6 4390 return FALSE;
cf5c0c5b
AM		 4391 if (*name == '\0')
4392 name = bfd_section_name (input_bfd, sec);
4393 }
ffb2e45b 4394
cf5c0c5b
AM		 4395 if (r == bfd_reloc_overflow)
4396 {
cf5c0c5b 4397 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4398 (info, (h ? &h->root : NULL), name, howto->name,
4399 (bfd_vma) 0, input_bfd, input_section,
4400 rel->r_offset)))
b34976b6 4401 return FALSE;
cf5c0c5b
AM		 4402 }
4403 else
4404 {
4405 (*_bfd_error_handler)
d003868e
AM		 4406 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4407 input_bfd, input_section,
cf5c0c5b 4408 (long) rel->r_offset, name, (int) r);
b34976b6 4409 return FALSE;
cf5c0c5b 4410 }
252b5132
RH		 4411 }
4412 }
4413
b34976b6 4414 return TRUE;
252b5132
RH		 4415}
4416
4417/* Finish up dynamic symbol handling. We set the contents of various
4418 dynamic sections here. */
4419
b34976b6 4420static bfd_boolean
55fd94b0
AM		 4421elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4422 struct bfd_link_info *info,
4423 struct elf_link_hash_entry *h,
4424 Elf_Internal_Sym *sym)
252b5132 4425{
6725bdbf 4426 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4427 unsigned plt_entry_size;
4428 const struct elf_i386_backend_data *abed;
252b5132 4429
6725bdbf 4430 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4431 if (htab == NULL)
4432 return FALSE;
252b5132 4433
25e762b9
RM		 4434 abed = get_elf_i386_backend_data (output_bfd);
4435 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4436
252b5132
RH		 4437 if (h->plt.offset != (bfd_vma) -1)
4438 {
252b5132
RH		 4439 bfd_vma plt_index;
4440 bfd_vma got_offset;
947216bf
AM		 4441 Elf_Internal_Rela rel;
4442 bfd_byte *loc;
cbe950e9
L		 4443 asection *plt, *gotplt, *relplt;
4444
4445 /* When building a static executable, use .iplt, .igot.plt and
4446 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4447 if (htab->elf.splt != NULL)
cbe950e9 4448 {
6de2ae4a
L		 4449 plt = htab->elf.splt;
4450 gotplt = htab->elf.sgotplt;
4451 relplt = htab->elf.srelplt;
cbe950e9
L		 4452 }
4453 else
4454 {
6de2ae4a
L		 4455 plt = htab->elf.iplt;
4456 gotplt = htab->elf.igotplt;
4457 relplt = htab->elf.irelplt;
cbe950e9 4458 }
252b5132
RH		 4459
4460 /* This symbol has an entry in the procedure linkage table. Set
4461 it up. */
4462
cbe950e9
L		 4463 if ((h->dynindx == -1
4464 && !((h->forced_local || info->executable)
4465 && h->def_regular
4466 && h->type == STT_GNU_IFUNC))
4467 || plt == NULL
4468 || gotplt == NULL
4469 || relplt == NULL)
cec7f46a 4470 abort ();
252b5132
RH		 4471
4472 /* Get the index in the procedure linkage table which
4473 corresponds to this symbol. This is the index of this symbol
4474 in all the symbols for which we are making plt entries. The
cbe950e9 4475 first entry in the procedure linkage table is reserved.
252b5132 4476
cbe950e9 4477 Get the offset into the .got table of the entry that
252b5132 4478 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4479 The first three are reserved.
6bbec505 4480
cbe950e9
L		 4481 For static executables, we don't reserve anything. */
4482
6de2ae4a 4483 if (plt == htab->elf.splt)
cbe950e9 4484 {
e1f98742
L		 4485 got_offset = h->plt.offset / plt_entry_size - 1;
4486 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4487 }
4488 else
4489 {
e1f98742
L		 4490 got_offset = h->plt.offset / plt_entry_size;
4491 got_offset = got_offset * 4;
cbe950e9 4492 }
252b5132
RH		 4493
4494 /* Fill in the entry in the procedure linkage table. */
4495 if (! info->shared)
4496 {
25e762b9
RM		 4497 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4498 abed->plt->plt_entry_size);
252b5132 4499 bfd_put_32 (output_bfd,
cbe950e9
L		 4500 (gotplt->output_section->vma
4501 + gotplt->output_offset
252b5132 4502 + got_offset),
25e762b9
RM		 4503 plt->contents + h->plt.offset
4504 + abed->plt->plt_got_offset);
eac338cf 4505
25e762b9 4506 if (abed->is_vxworks)
eac338cf
PB		 4507 {
4508 int s, k, reloc_index;
4509
4510 /* Create the R_386_32 relocation referencing the GOT
4511 for this PLT entry. */
4512
4513 /* S: Current slot number (zero-based). */
25e762b9
RM		 4514 s = ((h->plt.offset - abed->plt->plt_entry_size)
4515 / abed->plt->plt_entry_size);
eac338cf
PB		 4516 /* K: Number of relocations for PLTResolve. */
4517 if (info->shared)
4518 k = PLTRESOLVE_RELOCS_SHLIB;
4519 else
4520 k = PLTRESOLVE_RELOCS;
4521 /* Skip the PLTresolve relocations, and the relocations for
4522 the other PLT slots. */
4523 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4524 loc = (htab->srelplt2->contents + reloc_index
4525 * sizeof (Elf32_External_Rel));
4526
6de2ae4a
L		 4527 rel.r_offset = (htab->elf.splt->output_section->vma
4528 + htab->elf.splt->output_offset
eac338cf 4529 + h->plt.offset + 2),
7325306f 4530 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4531 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4532
4533 /* Create the R_386_32 relocation referencing the beginning of
4534 the PLT for this GOT entry. */
6de2ae4a
L		 4535 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4536 + htab->elf.sgotplt->output_offset
eac338cf 4537 + got_offset);
7325306f 4538 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4539 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4540 loc + sizeof (Elf32_External_Rel));
eac338cf 4541 }
252b5132
RH		 4542 }
4543 else
4544 {
25e762b9
RM		 4545 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4546 abed->plt->plt_entry_size);
252b5132 4547 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4548 plt->contents + h->plt.offset
4549 + abed->plt->plt_got_offset);
252b5132
RH		 4550 }
4551
252b5132
RH		 4552 /* Fill in the entry in the global offset table. */
4553 bfd_put_32 (output_bfd,
cbe950e9
L		 4554 (plt->output_section->vma
4555 + plt->output_offset
252b5132 4556 + h->plt.offset
25e762b9 4557 + abed->plt->plt_lazy_offset),
cbe950e9 4558 gotplt->contents + got_offset);
252b5132
RH		 4559
4560 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4561 rel.r_offset = (gotplt->output_section->vma
4562 + gotplt->output_offset
252b5132 4563 + got_offset);
cbe950e9
L		 4564 if (h->dynindx == -1
4565 || ((info->executable
4566 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4567 && h->def_regular
4568 && h->type == STT_GNU_IFUNC))
4569 {
4570 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4571 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4572 in the .got.plt section. */
4573 bfd_put_32 (output_bfd,
23209a78 4574 (h->root.u.def.value
cbe950e9
L		 4575 + h->root.u.def.section->output_section->vma
4576 + h->root.u.def.section->output_offset),
4577 gotplt->contents + got_offset);
4578 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4579 /* R_386_IRELATIVE comes last. */
4580 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4581 }
4582 else
e1f98742
L		 4583 {
4584 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4585 plt_index = htab->next_jump_slot_index++;
4586 }
cbe950e9 4587 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4588 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4589
e1f98742
L		 4590 /* Don't fill PLT entry for static executables. */
4591 if (plt == htab->elf.splt)
4592 {
4593 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4594 plt->contents + h->plt.offset
4595 + abed->plt->plt_reloc_offset);
4596 bfd_put_32 (output_bfd, - (h->plt.offset
4597 + abed->plt->plt_plt_offset + 4),
4598 plt->contents + h->plt.offset
4599 + abed->plt->plt_plt_offset);
4600 }
4601
f5385ebf 4602 if (!h->def_regular)
252b5132
RH		 4603 {
4604 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 4605 the .plt section. Leave the value if there were any
4606 relocations where pointer equality matters (this is a clue
51b64d56
AM		 4607 for the dynamic linker, to make function pointer
4608 comparisons work between an application and shared
c6585bbb
JJ		 4609 library), otherwise set it to zero. If a function is only
4610 called from a binary, there is no need to slow down
4611 shared libraries because of that. */
252b5132 4612 sym->st_shndx = SHN_UNDEF;
f5385ebf 4613 if (!h->pointer_equality_needed)
c6585bbb 4614 sym->st_value = 0;
252b5132
RH		 4615 }
4616 }
4617
13ae64f3 4618 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4619 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4620 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4621 {
947216bf 4622 Elf_Internal_Rela rel;
252b5132
RH		 4623
4624 /* This symbol has an entry in the global offset table. Set it
4625 up. */
4626
6de2ae4a 4627 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4628 abort ();
252b5132 4629
6de2ae4a
L		 4630 rel.r_offset = (htab->elf.sgot->output_section->vma
4631 + htab->elf.sgot->output_offset
dc810e39 4632 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4633
dd5724d5
AM		 4634 /* If this is a static link, or it is a -Bsymbolic link and the
4635 symbol is defined locally or was forced to be local because
4636 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4637 The entry in the global offset table will already have been
4638 initialized in the relocate_section function. */
710ab287 4639 if (h->def_regular
0018b0a3
L		 4640 && h->type == STT_GNU_IFUNC)
4641 {
710ab287
L		 4642 if (info->shared)
4643 {
4644 /* Generate R_386_GLOB_DAT. */
4645 goto do_glob_dat;
4646 }
4647 else
4648 {
cd2b2c10
L		 4649 asection *plt;
4650
710ab287
L		 4651 if (!h->pointer_equality_needed)
4652 abort ();
4653
4654 /* For non-shared object, we can't use .got.plt, which
4655 contains the real function addres if we need pointer
4656 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4657 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4658 bfd_put_32 (output_bfd,
4659 (plt->output_section->vma
4660 + plt->output_offset + h->plt.offset),
6de2ae4a 4661 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4662 return TRUE;
4663 }
0018b0a3
L		 4664 }
4665 else if (info->shared
4666 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4667 {
6725bdbf 4668 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4669 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4670 }
252b5132
RH		 4671 else
4672 {
dd5724d5 4673 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4674do_glob_dat:
6725bdbf 4675 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4676 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4677 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4678 }
4679
59d6ffb2 4680 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 4681 }
4682
f5385ebf 4683 if (h->needs_copy)
252b5132 4684 {
947216bf 4685 Elf_Internal_Rela rel;
252b5132
RH		 4686
4687 /* This symbol needs a copy reloc. Set it up. */
4688
ffb2e45b
AM		 4689 if (h->dynindx == -1
4690 || (h->root.type != bfd_link_hash_defined
4691 && h->root.type != bfd_link_hash_defweak)
4692 || htab->srelbss == NULL)
4693 abort ();
252b5132
RH		 4694
4695 rel.r_offset = (h->root.u.def.value
4696 + h->root.u.def.section->output_section->vma
4697 + h->root.u.def.section->output_offset);
4698 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 4699 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 4700 }
4701
b34976b6 4702 return TRUE;
252b5132
RH		 4703}
4704
c25bc9fc
L		 4705/* Finish up local dynamic symbol handling. We set the contents of
4706 various dynamic sections here. */
4707
4708static bfd_boolean
4709elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4710{
4711 struct elf_link_hash_entry *h
4712 = (struct elf_link_hash_entry *) *slot;
4713 struct bfd_link_info *info
23209a78 4714 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4715
4716 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4717 h, NULL);
4718}
4719
38701953
AM		 4720/* Used to decide how to sort relocs in an optimal manner for the
4721 dynamic linker, before writing them out. */
4722
4723static enum elf_reloc_type_class
7e612e98
AM		 4724elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4725 const asection *rel_sec ATTRIBUTE_UNUSED,
4726 const Elf_Internal_Rela *rela)
38701953 4727{
55fd94b0 4728 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4729 {
4730 case R_386_RELATIVE:
4731 return reloc_class_relative;
4732 case R_386_JUMP_SLOT:
4733 return reloc_class_plt;
4734 case R_386_COPY:
4735 return reloc_class_copy;
4736 default:
4737 return reloc_class_normal;
4738 }
4739}
4740
252b5132
RH		 4741/* Finish up the dynamic sections. */
4742
b34976b6 4743static bfd_boolean
55fd94b0
AM		 4744elf_i386_finish_dynamic_sections (bfd *output_bfd,
4745 struct bfd_link_info *info)
252b5132 4746{
6725bdbf 4747 struct elf_i386_link_hash_table *htab;
252b5132 4748 bfd *dynobj;
252b5132 4749 asection *sdyn;
25e762b9 4750 const struct elf_i386_backend_data *abed;
252b5132 4751
6725bdbf 4752 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4753 if (htab == NULL)
4754 return FALSE;
4755
ebe50bae 4756 dynobj = htab->elf.dynobj;
3d4d4302 4757 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4758 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4759
ebe50bae 4760 if (htab->elf.dynamic_sections_created)
252b5132 4761 {
252b5132
RH		 4762 Elf32_External_Dyn *dyncon, *dynconend;
4763
6de2ae4a 4764 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4765 abort ();
252b5132
RH		 4766
4767 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4768 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4769 for (; dyncon < dynconend; dyncon++)
4770 {
4771 Elf_Internal_Dyn dyn;
51b64d56 4772 asection *s;
252b5132
RH		 4773
4774 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4775
4776 switch (dyn.d_tag)
4777 {
4778 default:
25e762b9
RM		 4779 if (abed->is_vxworks
4780 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 4781 break;
0ac8d2ca 4782 continue;
252b5132
RH		 4783
4784 case DT_PLTGOT:
6de2ae4a 4785 s = htab->elf.sgotplt;
8c37241b 4786 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 4787 break;
4788
252b5132 4789 case DT_JMPREL:
6de2ae4a 4790 s = htab->elf.srelplt;
6348e046 4791 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 4792 break;
4793
4794 case DT_PLTRELSZ:
6de2ae4a 4795 s = htab->elf.srelplt;
eea6121a 4796 dyn.d_un.d_val = s->size;
252b5132
RH		 4797 break;
4798
4799 case DT_RELSZ:
4800 /* My reading of the SVR4 ABI indicates that the
4801 procedure linkage table relocs (DT_JMPREL) should be
4802 included in the overall relocs (DT_REL). This is
4803 what Solaris does. However, UnixWare can not handle
4804 that case. Therefore, we override the DT_RELSZ entry
6348e046 4805 here to make it not include the JMPREL relocs. */
6de2ae4a 4806 s = htab->elf.srelplt;
6348e046
AM		 4807 if (s == NULL)
4808 continue;
eea6121a 4809 dyn.d_un.d_val -= s->size;
6348e046
AM		 4810 break;
4811
4812 case DT_REL:
4813 /* We may not be using the standard ELF linker script.
4814 If .rel.plt is the first .rel section, we adjust
4815 DT_REL to not include it. */
6de2ae4a 4816 s = htab->elf.srelplt;
6348e046
AM		 4817 if (s == NULL)
4818 continue;
4819 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4820 continue;
eea6121a 4821 dyn.d_un.d_ptr += s->size;
252b5132
RH		 4822 break;
4823 }
0ac8d2ca
AM		 4824
4825 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 4826 }
4827
4828 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 4829 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 4830 {
4831 if (info->shared)
eac338cf 4832 {
25e762b9
RM		 4833 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
4834 abed->plt->plt0_entry_size);
4835 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4836 abed->plt0_pad_byte,
4837 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 4838 }
252b5132
RH		 4839 else
4840 {
25e762b9
RM		 4841 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
4842 abed->plt->plt0_entry_size);
4843 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4844 abed->plt0_pad_byte,
4845 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 4846 bfd_put_32 (output_bfd,
6de2ae4a
L		 4847 (htab->elf.sgotplt->output_section->vma
4848 + htab->elf.sgotplt->output_offset
6725bdbf 4849 + 4),
25e762b9
RM		 4850 htab->elf.splt->contents
4851 + abed->plt->plt0_got1_offset);
252b5132 4852 bfd_put_32 (output_bfd,
6de2ae4a
L		 4853 (htab->elf.sgotplt->output_section->vma
4854 + htab->elf.sgotplt->output_offset
6725bdbf 4855 + 8),
25e762b9
RM		 4856 htab->elf.splt->contents
4857 + abed->plt->plt0_got2_offset);
eac338cf 4858
25e762b9 4859 if (abed->is_vxworks)
eac338cf
PB		 4860 {
4861 Elf_Internal_Rela rel;
7325306f 4862
eac338cf
PB		 4863 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4864 On IA32 we use REL relocations so the addend goes in
4865 the PLT directly. */
6de2ae4a
L		 4866 rel.r_offset = (htab->elf.splt->output_section->vma
4867 + htab->elf.splt->output_offset
25e762b9 4868 + abed->plt->plt0_got1_offset);
7325306f 4869 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4870 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4871 htab->srelplt2->contents);
4872 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 4873 rel.r_offset = (htab->elf.splt->output_section->vma
4874 + htab->elf.splt->output_offset
25e762b9 4875 + abed->plt->plt0_got2_offset);
7325306f 4876 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4877 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4878 htab->srelplt2->contents +
4879 sizeof (Elf32_External_Rel));
4880 }
252b5132
RH		 4881 }
4882
4883 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4884 really seem like the right value. */
6de2ae4a 4885 elf_section_data (htab->elf.splt->output_section)
6725bdbf 4886 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 4887
4888 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 4889 if (abed->is_vxworks && !info->shared)
eac338cf 4890 {
25e762b9
RM		 4891 int num_plts = (htab->elf.splt->size
4892 / abed->plt->plt_entry_size) - 1;
4c9b0de6 4893 unsigned char *p;
eac338cf
PB		 4894
4895 p = htab->srelplt2->contents;
4896 if (info->shared)
4897 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4898 else
4899 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4900
4901 for (; num_plts; num_plts--)
4902 {
4903 Elf_Internal_Rela rel;
4904 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4905 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4906 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4907 p += sizeof (Elf32_External_Rel);
4908
4909 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4910 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4911 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4912 p += sizeof (Elf32_External_Rel);
4913 }
4914 }
252b5132
RH		 4915 }
4916 }
4917
6de2ae4a 4918 if (htab->elf.sgotplt)
252b5132 4919 {
56d4289c
L		 4920 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4921 {
4922 (*_bfd_error_handler)
4923 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4924 return FALSE;
4925 }
4926
12d0ee4a 4927 /* Fill in the first three entries in the global offset table. */
6de2ae4a 4928 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 4929 {
4930 bfd_put_32 (output_bfd,
55fd94b0 4931 (sdyn == NULL ? 0
12d0ee4a 4932 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 4933 htab->elf.sgotplt->contents);
4934 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4935 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 4936 }
252b5132 4937
6de2ae4a 4938 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 4939 }
8c37241b 4940
e41b3a13 4941 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 4942 if (htab->plt_eh_frame != NULL
4943 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 4944 {
4945 if (htab->elf.splt != NULL
4946 && htab->elf.splt->size != 0
4947 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
4948 && htab->elf.splt->output_section != NULL
4949 && htab->plt_eh_frame->output_section != NULL)
4950 {
4951 bfd_vma plt_start = htab->elf.splt->output_section->vma;
4952 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
4953 + htab->plt_eh_frame->output_offset
4954 + PLT_FDE_START_OFFSET;
4955 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4956 htab->plt_eh_frame->contents
4957 + PLT_FDE_START_OFFSET);
4958 }
4959 if (htab->plt_eh_frame->sec_info_type
dbaa2011 4960 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 4961 {
4962 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4963 htab->plt_eh_frame,
4964 htab->plt_eh_frame->contents))
4965 return FALSE;
4966 }
4967 }
4968
6de2ae4a
L		 4969 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4970 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 4971
c25bc9fc
L		 4972 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4973 htab_traverse (htab->loc_hash_table,
4974 elf_i386_finish_local_dynamic_symbol,
4975 info);
4976
b34976b6 4977 return TRUE;
252b5132
RH		 4978}
4979
4c45e5c9
JJ		 4980/* Return address for Ith PLT stub in section PLT, for relocation REL
4981 or (bfd_vma) -1 if it should not be included. */
4982
4983static bfd_vma
4984elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
4985 const arelent *rel ATTRIBUTE_UNUSED)
4986{
25e762b9 4987 return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
4c45e5c9
JJ		 4988}
4989
fdc90cb4
JJ		 4990/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
4991
4992static bfd_boolean
4993elf_i386_hash_symbol (struct elf_link_hash_entry *h)
4994{
4995 if (h->plt.offset != (bfd_vma) -1
4996 && !h->def_regular
4997 && !h->pointer_equality_needed)
4998 return FALSE;
4999
5000 return _bfd_elf_hash_symbol (h);
5001}
4c45e5c9 5002
d8045f23
NC		 5003/* Hook called by the linker routine which adds symbols from an object
5004 file. */
5005
5006static bfd_boolean
c16153ae 5007elf_i386_add_symbol_hook (bfd * abfd,
d8045f23
NC		 5008 struct bfd_link_info * info ATTRIBUTE_UNUSED,
5009 Elf_Internal_Sym * sym,
5010 const char ** namep ATTRIBUTE_UNUSED,
5011 flagword * flagsp ATTRIBUTE_UNUSED,
5012 asection ** secp ATTRIBUTE_UNUSED,
5013 bfd_vma * valp ATTRIBUTE_UNUSED)
5014{
c16153ae 5015 if ((abfd->flags & DYNAMIC) == 0
f64b2e8d
NC		 5016 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5017 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
5018 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC		 5019
5020 return TRUE;
5021}
5022
252b5132
RH		 5023#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
5024#define TARGET_LITTLE_NAME "elf32-i386"
5025#define ELF_ARCH bfd_arch_i386
ae95ffa6 5026#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5027#define ELF_MACHINE_CODE EM_386
5028#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5029
5030#define elf_backend_can_gc_sections 1
51b64d56 5031#define elf_backend_can_refcount 1
252b5132
RH		 5032#define elf_backend_want_got_plt 1
5033#define elf_backend_plt_readonly 1
5034#define elf_backend_want_plt_sym 0
5035#define elf_backend_got_header_size 12
e41b3a13 5036#define elf_backend_plt_alignment 4
252b5132 5037
8c29f035
AM		 5038/* Support RELA for objdump of prelink objects. */
5039#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5040#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5041
13ae64f3 5042#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5043
dd5724d5
AM		 5044#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5045#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
c25bc9fc 5046#define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
dd5724d5 5047#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5048#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM		 5049
5050#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5051#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5052#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5053#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5054#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5055#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5056#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5057#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5058#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5059#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5060#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5061#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5062#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5063#define elf_backend_relocate_section elf_i386_relocate_section
5064#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5065#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5066#define elf_backend_omit_section_dynsym \
5067 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 5068#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 5069#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23 5070#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
dd5724d5 5071
252b5132 5072#include "elf32-target.h"
2bc3c89a
AM		 5073
5074/* FreeBSD support. */
5075
5076#undef TARGET_LITTLE_SYM
5077#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
5078#undef TARGET_LITTLE_NAME
5079#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5080#undef ELF_OSABI
5081#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5082
5083/* The kernel recognizes executables as valid only if they carry a
5084 "FreeBSD" label in the ELF header. So we put this label on all
5085 executables and (for simplicity) also all other object files. */
5086
2bc3c89a 5087static void
d8045f23 5088elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5089{
78245035 5090 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 5091
2bc3c89a
AM		 5092#ifdef OLD_FREEBSD_ABI_LABEL
5093 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5094 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 5095#endif
2bc3c89a
AM		 5096}
5097
5098#undef elf_backend_post_process_headers
d8045f23 5099#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5100#undef elf32_bed
5101#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5102
d8045f23
NC		 5103#undef elf_backend_add_symbol_hook
5104
2bc3c89a 5105#include "elf32-target.h"
eac338cf 5106
a6cc6b3b
RO		 5107/* Solaris 2. */
5108
5109#undef TARGET_LITTLE_SYM
5110#define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec
5111#undef TARGET_LITTLE_NAME
5112#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5113
5114/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5115 objects won't be recognized. */
5116#undef ELF_OSABI
5117
5118#undef elf32_bed
5119#define elf32_bed elf32_i386_sol2_bed
5120
7dc98aea
RO		 5121/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5122 boundary. */
5123#undef elf_backend_static_tls_alignment
5124#define elf_backend_static_tls_alignment 8
5125
a6cc6b3b
RO		 5126/* The Solaris 2 ABI requires a plt symbol on all platforms.
5127
5128 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5129 File, p.63. */
5130#undef elf_backend_want_plt_sym
5131#define elf_backend_want_plt_sym 1
5132
5133#include "elf32-target.h"
5134
a27e4371
RM		 5135/* Native Client support. */
5136
5137#undef TARGET_LITTLE_SYM
5138#define TARGET_LITTLE_SYM bfd_elf32_i386_nacl_vec
5139#undef TARGET_LITTLE_NAME
5140#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5141#undef elf32_bed
5142#define elf32_bed elf32_i386_nacl_bed
5143
5144#undef ELF_MAXPAGESIZE
5145#define ELF_MAXPAGESIZE 0x10000
5146
5147/* Restore defaults. */
5148#undef ELF_OSABI
5149#undef elf_backend_want_plt_sym
5150#define elf_backend_want_plt_sym 0
5151#undef elf_backend_post_process_headers
a27e4371
RM		 5152#undef elf_backend_static_tls_alignment
5153
5154/* NaCl uses substantially different PLT entries for the same effects. */
5155
5156#undef elf_backend_plt_alignment
5157#define elf_backend_plt_alignment 5
5158#define NACL_PLT_ENTRY_SIZE 64
5159#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5160
5161static const bfd_byte elf_i386_nacl_plt0_entry[] =
5162 {
5163 0xff, 0x35, /* pushl contents of address */
5164 0, 0, 0, 0, /* replaced with address of .got + 4. */
5165 0x8b, 0x0d, /* movl contents of address, %ecx */
5166 0, 0, 0, 0, /* replaced with address of .got + 8. */
5167 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5168 0xff, 0xe1 /* jmp *%ecx */
5169 };
5170
5171static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5172 {
5173 0x8b, 0x0d, /* movl contents of address, %ecx */
5174 0, 0, 0, 0, /* replaced with GOT slot address. */
5175 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5176 0xff, 0xe1, /* jmp *%ecx */
5177
5178 /* Pad to the next 32-byte boundary with nop instructions. */
5179 0x90,
5180 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5181 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5182
5183 /* Lazy GOT entries point here (32-byte aligned). */
5184 0x68, /* pushl immediate */
5185 0, 0, 0, 0, /* replaced with reloc offset. */
5186 0xe9, /* jmp relative */
5187 0, 0, 0, 0, /* replaced with offset to .plt. */
5188
5189 /* Pad to the next 32-byte boundary with nop instructions. */
5190 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5191 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5192 0x90, 0x90
5193 };
5194
5195static const bfd_byte
5196elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5197 {
5198 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5199 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5200 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5201 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5202
5203 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5204 so pad to that size with nop instructions. */
5205 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5206 };
5207
5208static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5209 {
5210 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5211 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5212 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5213 0xff, 0xe1, /* jmp *%ecx */
5214
5215 /* Pad to the next 32-byte boundary with nop instructions. */
5216 0x90,
5217 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5218 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5219
5220 /* Lazy GOT entries point here (32-byte aligned). */
5221 0x68, /* pushl immediate */
5222 0, 0, 0, 0, /* replaced with offset into relocation table. */
5223 0xe9, /* jmp relative */
5224 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5225
5226 /* Pad to the next 32-byte boundary with nop instructions. */
5227 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5228 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5229 0x90, 0x90
5230 };
5231
5232static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5233 {
5234#if (PLT_CIE_LENGTH != 20 \
5235 || PLT_FDE_LENGTH != 36 \
5236 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5237 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5238# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5239#endif
5240 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5241 0, 0, 0, 0, /* CIE ID */
5242 1, /* CIE version */
5243 'z', 'R', 0, /* Augmentation string */
5244 1, /* Code alignment factor */
5245 0x7c, /* Data alignment factor: -4 */
5246 8, /* Return address column */
5247 1, /* Augmentation size */
5248 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5249 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5250 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5251 DW_CFA_nop, DW_CFA_nop,
5252
5253 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5254 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5255 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5256 0, 0, 0, 0, /* .plt size goes here */
5257 0, /* Augmentation size */
5258 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5259 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5260 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5261 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5262 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5263 13, /* Block length */
5264 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5265 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5266 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5267 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5268 DW_CFA_nop, DW_CFA_nop
5269 };
5270
5271static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5272 {
5273 elf_i386_nacl_plt0_entry, /* plt0_entry */
5274 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5275 2, /* plt0_got1_offset */
5276 8, /* plt0_got2_offset */
5277 elf_i386_nacl_plt_entry, /* plt_entry */
5278 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5279 2, /* plt_got_offset */
5280 33, /* plt_reloc_offset */
5281 38, /* plt_plt_offset */
5282 32, /* plt_lazy_offset */
5283 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5284 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5285 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5286 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5287 };
5288
5289static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5290 {
5291 &elf_i386_nacl_plt, /* plt */
5292 0x90, /* plt0_pad_byte: nop insn */
5293 0, /* is_vxworks */
5294 };
5295
64b384e1
RM		 5296static bfd_boolean
5297elf32_i386_nacl_elf_object_p (bfd *abfd)
5298{
5299 /* Set the right machine number for a NaCl i386 ELF32 file. */
5300 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
5301 return TRUE;
5302}
5303
a27e4371
RM		 5304#undef elf_backend_arch_data
5305#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5306
64b384e1
RM		 5307#undef elf_backend_object_p
5308#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 5309#undef elf_backend_modify_segment_map
5310#define elf_backend_modify_segment_map nacl_modify_segment_map
5311#undef elf_backend_modify_program_headers
5312#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5313#undef elf_backend_final_write_processing
5314#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5315
a27e4371
RM		 5316#include "elf32-target.h"
5317
5a68afcf 5318/* Restore defaults. */
64b384e1 5319#undef elf_backend_object_p
5a68afcf
RM		 5320#undef elf_backend_modify_segment_map
5321#undef elf_backend_modify_program_headers
887badb3 5322#undef elf_backend_final_write_processing
5a68afcf 5323
eac338cf
PB		 5324/* VxWorks support. */
5325
5326#undef TARGET_LITTLE_SYM
5327#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
5328#undef TARGET_LITTLE_NAME
5329#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5330#undef ELF_OSABI
a27e4371
RM		 5331#undef elf_backend_plt_alignment
5332#define elf_backend_plt_alignment 4
eac338cf 5333
23209a78
RM		 5334static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5335 {
25e762b9 5336 &elf_i386_plt, /* plt */
23209a78
RM		 5337 0x90, /* plt0_pad_byte */
5338 1, /* is_vxworks */
5339 };
eac338cf 5340
23209a78
RM		 5341#undef elf_backend_arch_data
5342#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5343
13285a1b 5344#undef elf_backend_relocs_compatible
eac338cf
PB		 5345#undef elf_backend_add_symbol_hook
5346#define elf_backend_add_symbol_hook \
5347 elf_vxworks_add_symbol_hook
5348#undef elf_backend_link_output_symbol_hook
5349#define elf_backend_link_output_symbol_hook \
9c72ff84 5350 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5351#undef elf_backend_emit_relocs
5352#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5353#undef elf_backend_final_write_processing
5354#define elf_backend_final_write_processing \
5355 elf_vxworks_final_write_processing
7dc98aea 5356#undef elf_backend_static_tls_alignment
eac338cf
PB		 5357
5358/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5359 define it. */
5360#undef elf_backend_want_plt_sym
5361#define elf_backend_want_plt_sym 1
5362
5363#undef elf32_bed
5364#define elf32_bed elf32_i386_vxworks_bed
5365
5366#include "elf32-target.h"
GDB Binutils - Deliverables
This page took 1.111809 seconds and 4 git commands to generate.