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non-PIC references to __ehdr_start in pie and shared
[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
818d220a
L		 2393 visibility. Don't discard relocs against __ehdr_start which
2394 will be defined by assign_file_positions_for_non_load_sections
2395 later. */
22d606e9 2396 if (eh->dyn_relocs != NULL
818d220a
L		 2397 && h->root.type == bfd_link_hash_undefweak
2398 && strcmp (h->root.root.string, "__ehdr_start") != 0)
22d606e9
AM		 2399 {
2400 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2401 eh->dyn_relocs = NULL;
2402
2403 /* Make sure undefined weak symbols are output as a dynamic
2404 symbol in PIEs. */
2405 else if (h->dynindx == -1
2406 && !h->forced_local)
2407 {
2408 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2409 return FALSE;
2410 }
2411 }
0c715baa 2412 }
a23b6845 2413 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2414 {
2415 /* For the non-shared case, discard space for relocs against
2416 symbols which turn out to need copy relocs or are not
2417 dynamic. */
2418
f5385ebf
AM		 2419 if (!h->non_got_ref
2420 && ((h->def_dynamic
2421 && !h->def_regular)
ebe50bae 2422 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2423 && (h->root.type == bfd_link_hash_undefweak
2424 || h->root.type == bfd_link_hash_undefined))))
2425 {
2426 /* Make sure this symbol is output as a dynamic symbol.
2427 Undefined weak syms won't yet be marked as dynamic. */
2428 if (h->dynindx == -1
f5385ebf 2429 && !h->forced_local)
0c715baa 2430 {
c152c796 2431 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2432 return FALSE;
0c715baa 2433 }
5a15f56f 2434
0c715baa
AM		 2435 /* If that succeeded, we know we'll be keeping all the
2436 relocs. */
2437 if (h->dynindx != -1)
2438 goto keep;
2439 }
2440
2441 eh->dyn_relocs = NULL;
2442
ec338859 2443 keep: ;
5a15f56f
AM		 2444 }
2445
0c715baa
AM		 2446 /* Finally, allocate space. */
2447 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2448 {
e7c33416
NC		 2449 asection *sreloc;
2450
cbe950e9 2451 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2452
2453 BFD_ASSERT (sreloc != NULL);
eea6121a 2454 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2455 }
2456
b34976b6 2457 return TRUE;
6725bdbf
AM		 2458}
2459
c25bc9fc
L		 2460/* Allocate space in .plt, .got and associated reloc sections for
2461 local dynamic relocs. */
2462
2463static bfd_boolean
2464elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2465{
2466 struct elf_link_hash_entry *h
2467 = (struct elf_link_hash_entry *) *slot;
2468
2469 if (h->type != STT_GNU_IFUNC
2470 || !h->def_regular
2471 || !h->ref_regular
2472 || !h->forced_local
2473 || h->root.type != bfd_link_hash_defined)
2474 abort ();
2475
2476 return elf_i386_allocate_dynrelocs (h, inf);
2477}
2478
0c715baa
AM		 2479/* Find any dynamic relocs that apply to read-only sections. */
2480
b34976b6 2481static bfd_boolean
eb4ff4d6 2482elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2483{
2484 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2485 struct elf_dyn_relocs *p;
0c715baa 2486
aa715242
L		 2487 /* Skip local IFUNC symbols. */
2488 if (h->forced_local && h->type == STT_GNU_IFUNC)
2489 return TRUE;
2490
0c715baa
AM		 2491 eh = (struct elf_i386_link_hash_entry *) h;
2492 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2493 {
2494 asection *s = p->sec->output_section;
2495
2496 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2497 {
2498 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2499
2500 info->flags |= DF_TEXTREL;
2501
b70321a2
L		 2502 if (info->warn_shared_textrel && info->shared)
2503 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
2504 p->sec->owner, h->root.root.string,
2505 p->sec);
2506
0c715baa 2507 /* Not an error, just cut short the traversal. */
b34976b6 2508 return FALSE;
0c715baa
AM		 2509 }
2510 }
b34976b6 2511 return TRUE;
0c715baa
AM		 2512}
2513
daa67607
L		 2514/* Convert
2515 mov foo@GOT(%reg), %reg
2516 to
2517 lea foo@GOTOFF(%reg), %reg
2518 with the local symbol, foo. */
2519
2520static bfd_boolean
2521elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
2522 struct bfd_link_info *link_info)
2523{
2524 Elf_Internal_Shdr *symtab_hdr;
2525 Elf_Internal_Rela *internal_relocs;
2526 Elf_Internal_Rela *irel, *irelend;
2527 bfd_byte *contents;
2528 struct elf_i386_link_hash_table *htab;
2529 bfd_boolean changed_contents;
2530 bfd_boolean changed_relocs;
2531 bfd_signed_vma *local_got_refcounts;
2532
2533 /* Don't even try to convert non-ELF outputs. */
2534 if (!is_elf_hash_table (link_info->hash))
2535 return FALSE;
2536
fbdc86d9 2537 /* Nothing to do if there are no codes, no relocations or no output. */
daa67607 2538 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
fbdc86d9
L		 2539 || sec->reloc_count == 0
2540 || discarded_section (sec))
daa67607
L		 2541 return TRUE;
2542
2543 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2544
2545 /* Load the relocations for this section. */
2546 internal_relocs = (_bfd_elf_link_read_relocs
2547 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2548 link_info->keep_memory));
2549 if (internal_relocs == NULL)
2550 return FALSE;
2551
2552 htab = elf_i386_hash_table (link_info);
2553 changed_contents = FALSE;
2554 changed_relocs = FALSE;
2555 local_got_refcounts = elf_local_got_refcounts (abfd);
2556
2557 /* Get the section contents. */
2558 if (elf_section_data (sec)->this_hdr.contents != NULL)
2559 contents = elf_section_data (sec)->this_hdr.contents;
2560 else
2561 {
2562 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2563 goto error_return;
2564 }
2565
2566 irelend = internal_relocs + sec->reloc_count;
2567 for (irel = internal_relocs; irel < irelend; irel++)
2568 {
2569 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2570 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2571 unsigned int indx;
2572 struct elf_link_hash_entry *h;
2573
2574 if (r_type != R_386_GOT32)
2575 continue;
2576
2577 /* Get the symbol referred to by the reloc. */
2578 if (r_symndx < symtab_hdr->sh_info)
2579 {
2580 Elf_Internal_Sym *isym;
2581
2582 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2583 abfd, r_symndx);
2584
2585 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2586 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
2587 && bfd_get_8 (input_bfd,
2588 contents + irel->r_offset - 2) == 0x8b)
2589 {
2590 bfd_put_8 (output_bfd, 0x8d,
2591 contents + irel->r_offset - 2);
2592 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2593 if (local_got_refcounts != NULL
2594 && local_got_refcounts[r_symndx] > 0)
2595 local_got_refcounts[r_symndx] -= 1;
2596 changed_contents = TRUE;
2597 changed_relocs = TRUE;
2598 }
2599 continue;
2600 }
2601
2602 indx = r_symndx - symtab_hdr->sh_info;
2603 h = elf_sym_hashes (abfd)[indx];
2604 BFD_ASSERT (h != NULL);
2605
2606 while (h->root.type == bfd_link_hash_indirect
2607 || h->root.type == bfd_link_hash_warning)
2608 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2609
3f65f599
L		 2610 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
2611 optimizing _DYNAMIC since ld.so may use its link-time address. */
daa67607
L		 2612 if (h->def_regular
2613 && h->type != STT_GNU_IFUNC
9637f6ef 2614 && h != htab->elf.hdynamic
daa67607
L		 2615 && SYMBOL_REFERENCES_LOCAL (link_info, h)
2616 && bfd_get_8 (input_bfd,
2617 contents + irel->r_offset - 2) == 0x8b)
2618 {
2619 bfd_put_8 (output_bfd, 0x8d,
2620 contents + irel->r_offset - 2);
2621 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2622 if (h->got.refcount > 0)
2623 h->got.refcount -= 1;
2624 changed_contents = TRUE;
2625 changed_relocs = TRUE;
2626 }
2627 }
2628
2629 if (contents != NULL
2630 && elf_section_data (sec)->this_hdr.contents != contents)
2631 {
2632 if (!changed_contents && !link_info->keep_memory)
2633 free (contents);
2634 else
2635 {
2636 /* Cache the section contents for elf_link_input_bfd. */
2637 elf_section_data (sec)->this_hdr.contents = contents;
2638 }
2639 }
2640
2641 if (elf_section_data (sec)->relocs != internal_relocs)
2642 {
2643 if (!changed_relocs)
2644 free (internal_relocs);
2645 else
2646 elf_section_data (sec)->relocs = internal_relocs;
2647 }
2648
2649 return TRUE;
2650
2651 error_return:
2652 if (contents != NULL
2653 && elf_section_data (sec)->this_hdr.contents != contents)
2654 free (contents);
2655 if (internal_relocs != NULL
2656 && elf_section_data (sec)->relocs != internal_relocs)
2657 free (internal_relocs);
2658 return FALSE;
2659}
2660
252b5132
RH		 2661/* Set the sizes of the dynamic sections. */
2662
b34976b6 2663static bfd_boolean
23209a78 2664elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2665{
6725bdbf 2666 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2667 bfd *dynobj;
2668 asection *s;
b34976b6 2669 bfd_boolean relocs;
0c715baa 2670 bfd *ibfd;
252b5132 2671
6725bdbf 2672 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2673 if (htab == NULL)
2674 return FALSE;
ebe50bae 2675 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2676 if (dynobj == NULL)
2677 abort ();
252b5132 2678
ebe50bae 2679 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2680 {
2681 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2682 if (info->executable)
252b5132 2683 {
3d4d4302 2684 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 2685 if (s == NULL)
2686 abort ();
eea6121a 2687 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2688 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2689 }
161d71a6 2690 }
6725bdbf 2691
0c715baa
AM		 2692 /* Set up .got offsets for local syms, and space for local dynamic
2693 relocs. */
2694 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 2695 {
2696 bfd_signed_vma *local_got;
2697 bfd_signed_vma *end_local_got;
13ae64f3 2698 char *local_tls_type;
67a4f2b7 2699 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2700 bfd_size_type locsymcount;
2701 Elf_Internal_Shdr *symtab_hdr;
2702 asection *srel;
6725bdbf 2703
0ffa91dd 2704 if (! is_i386_elf (ibfd))
161d71a6 2705 continue;
6725bdbf 2706
0c715baa
AM		 2707 for (s = ibfd->sections; s != NULL; s = s->next)
2708 {
e03a8ed8 2709 struct elf_dyn_relocs *p;
0c715baa 2710
daa67607
L		 2711 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2712 return FALSE;
2713
e03a8ed8 2714 for (p = ((struct elf_dyn_relocs *)
e81d3500 2715 elf_section_data (s)->local_dynrel);
ec338859
AM		 2716 p != NULL;
2717 p = p->next)
0c715baa 2718 {
ec338859
AM		 2719 if (!bfd_is_abs_section (p->sec)
2720 && bfd_is_abs_section (p->sec->output_section))
2721 {
2722 /* Input section has been discarded, either because
2723 it is a copy of a linkonce section or due to
2724 linker script /DISCARD/, so we'll be discarding
2725 the relocs too. */
2726 }
23209a78 2727 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2728 && strcmp (p->sec->output_section->name,
2729 ".tls_vars") == 0)
2730 {
2731 /* Relocations in vxworks .tls_vars sections are
2732 handled specially by the loader. */
2733 }
248866a8 2734 else if (p->count != 0)
ec338859
AM		 2735 {
2736 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2737 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2738 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2739 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2740 {
2741 info->flags |= DF_TEXTREL;
2742 if (info->warn_shared_textrel && info->shared)
2743 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
2744 p->sec->owner, p->sec);
b70321a2 2745 }
ec338859 2746 }
0c715baa
AM		 2747 }
2748 }
2749
2750 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2751 if (!local_got)
2752 continue;
6725bdbf 2753
0ffa91dd 2754 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2755 locsymcount = symtab_hdr->sh_info;
2756 end_local_got = local_got + locsymcount;
13ae64f3 2757 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2758 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2759 s = htab->elf.sgot;
2760 srel = htab->elf.srelgot;
67a4f2b7
AO		 2761 for (; local_got < end_local_got;
2762 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2763 {
67a4f2b7 2764 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2765 if (*local_got > 0)
6725bdbf 2766 {
67a4f2b7
AO		 2767 if (GOT_TLS_GDESC_P (*local_tls_type))
2768 {
6de2ae4a 2769 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2770 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2771 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2772 *local_got = (bfd_vma) -2;
2773 }
2774 if (! GOT_TLS_GDESC_P (*local_tls_type)
2775 || GOT_TLS_GD_P (*local_tls_type))
2776 {
2777 *local_got = s->size;
2778 s->size += 4;
2779 if (GOT_TLS_GD_P (*local_tls_type)
2780 || *local_tls_type == GOT_TLS_IE_BOTH)
2781 s->size += 4;
2782 }
13ae64f3 2783 if (info->shared
67a4f2b7 2784 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2785 || (*local_tls_type & GOT_TLS_IE))
2786 {
2787 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2788 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2789 else if (GOT_TLS_GD_P (*local_tls_type)
2790 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2791 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2792 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2793 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2794 }
6725bdbf 2795 }
161d71a6
L		 2796 else
2797 *local_got = (bfd_vma) -1;
6725bdbf 2798 }
252b5132 2799 }
6725bdbf 2800
13ae64f3
JJ		 2801 if (htab->tls_ldm_got.refcount > 0)
2802 {
2803 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2804 relocs. */
6de2ae4a
L		 2805 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2806 htab->elf.sgot->size += 8;
2807 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2808 }
2809 else
2810 htab->tls_ldm_got.offset = -1;
2811
0c715baa
AM		 2812 /* Allocate global sym .plt and .got entries, and space for global
2813 sym dynamic relocs. */
eb4ff4d6 2814 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2815
c25bc9fc
L		 2816 /* Allocate .plt and .got entries, and space for local symbols. */
2817 htab_traverse (htab->loc_hash_table,
2818 elf_i386_allocate_local_dynrelocs,
2819 info);
2820
67a4f2b7
AO		 2821 /* For every jump slot reserved in the sgotplt, reloc_count is
2822 incremented. However, when we reserve space for TLS descriptors,
2823 it's not incremented, so in order to compute the space reserved
2824 for them, it suffices to multiply the reloc count by the jump
e1f98742 2825 slot size.
caa0075c 2826
e1f98742
L		 2827 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2828 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2829 if (htab->elf.srelplt)
e1f98742
L		 2830 {
2831 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2832 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2833 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2834 }
2835 else if (htab->elf.irelplt)
2836 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2837
67a4f2b7 2838
a7b16ceb
L		 2839 if (htab->elf.sgotplt)
2840 {
2841 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2842 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 2843 if ((htab->elf.hgot == NULL
2844 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 2845 && (htab->elf.sgotplt->size
2846 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2847 && (htab->elf.splt == NULL
2848 || htab->elf.splt->size == 0)
2849 && (htab->elf.sgot == NULL
2850 || htab->elf.sgot->size == 0)
2851 && (htab->elf.iplt == NULL
2852 || htab->elf.iplt->size == 0)
2853 && (htab->elf.igotplt == NULL
2854 || htab->elf.igotplt->size == 0))
2855 htab->elf.sgotplt->size = 0;
2856 }
2857
9a2a56cc
AM		 2858
2859 if (htab->plt_eh_frame != NULL
2860 && htab->elf.splt != NULL
2861 && htab->elf.splt->size != 0
2862 && !bfd_is_abs_section (htab->elf.splt->output_section)
2863 && _bfd_elf_eh_frame_present (info))
2864 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
2865
5a15f56f
AM		 2866 /* We now have determined the sizes of the various dynamic sections.
2867 Allocate memory for them. */
b34976b6 2868 relocs = FALSE;
252b5132
RH		 2869 for (s = dynobj->sections; s != NULL; s = s->next)
2870 {
eac338cf
PB		 2871 bfd_boolean strip_section = TRUE;
2872
252b5132
RH		 2873 if ((s->flags & SEC_LINKER_CREATED) == 0)
2874 continue;
2875
6de2ae4a 2876 if (s == htab->elf.splt
9a2a56cc 2877 || s == htab->elf.sgot)
252b5132 2878 {
6725bdbf
AM		 2879 /* Strip this section if we don't need it; see the
2880 comment below. */
eac338cf
PB		 2881 /* We'd like to strip these sections if they aren't needed, but if
2882 we've exported dynamic symbols from them we must leave them.
2883 It's too late to tell BFD to get rid of the symbols. */
2884
7325306f 2885 if (htab->elf.hplt != NULL)
eac338cf 2886 strip_section = FALSE;
252b5132 2887 }
9a2a56cc
AM		 2888 else if (s == htab->elf.sgotplt
2889 || s == htab->elf.iplt
2890 || s == htab->elf.igotplt
2891 || s == htab->plt_eh_frame
2892 || s == htab->sdynbss)
2893 {
2894 /* Strip these too. */
2895 }
0112cd26 2896 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2897 {
6de2ae4a
L		 2898 if (s->size != 0
2899 && s != htab->elf.srelplt
2900 && s != htab->srelplt2)
b34976b6 2901 relocs = TRUE;
252b5132 2902
0ac8d2ca
AM		 2903 /* We use the reloc_count field as a counter if we need
2904 to copy relocs into the output file. */
5ae0bfb6 2905 s->reloc_count = 0;
252b5132 2906 }
6725bdbf 2907 else
252b5132
RH		 2908 {
2909 /* It's not one of our sections, so don't allocate space. */
2910 continue;
2911 }
2912
c456f082 2913 if (s->size == 0)
252b5132 2914 {
0ac8d2ca
AM		 2915 /* If we don't need this section, strip it from the
2916 output file. This is mostly to handle .rel.bss and
2917 .rel.plt. We must create both sections in
2918 create_dynamic_sections, because they must be created
2919 before the linker maps input sections to output
2920 sections. The linker does that before
2921 adjust_dynamic_symbol is called, and it is that
2922 function which decides whether anything needs to go
2923 into these sections. */
c456f082
AM		 2924 if (strip_section)
2925 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2926 continue;
2927 }
2928
c456f082
AM		 2929 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2930 continue;
2931
f69da49f
AM		 2932 /* Allocate memory for the section contents. We use bfd_zalloc
2933 here in case unused entries are not reclaimed before the
2934 section's contents are written out. This should not happen,
2935 but this way if it does, we get a R_386_NONE reloc instead
2936 of garbage. */
a50b1753 2937 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 2938 if (s->contents == NULL)
b34976b6 2939 return FALSE;
252b5132
RH		 2940 }
2941
e41b3a13 2942 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 2943 && htab->plt_eh_frame->contents != NULL)
2944 {
2945 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
2946 sizeof (elf_i386_eh_frame_plt));
2947 bfd_put_32 (dynobj, htab->elf.splt->size,
2948 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
2949 }
e41b3a13 2950
ebe50bae 2951 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2952 {
2953 /* Add some entries to the .dynamic section. We fill in the
2954 values later, in elf_i386_finish_dynamic_sections, but we
2955 must add the entries now so that we get the correct size for
2956 the .dynamic section. The DT_DEBUG entry is filled in by the
2957 dynamic linker and used by the debugger. */
dc810e39 2958#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2959 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2960
36af4a4e 2961 if (info->executable)
252b5132 2962 {
dc810e39 2963 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2964 return FALSE;
252b5132
RH		 2965 }
2966
6de2ae4a 2967 if (htab->elf.splt->size != 0)
252b5132 2968 {
dc810e39
AM		 2969 if (!add_dynamic_entry (DT_PLTGOT, 0)
2970 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2971 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2972 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2973 return FALSE;
252b5132
RH		 2974 }
2975
2976 if (relocs)
2977 {
dc810e39
AM		 2978 if (!add_dynamic_entry (DT_REL, 0)
2979 || !add_dynamic_entry (DT_RELSZ, 0)
2980 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 2981 return FALSE;
252b5132 2982
0c715baa
AM		 2983 /* If any dynamic relocs apply to a read-only section,
2984 then we need a DT_TEXTREL entry. */
248866a8 2985 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 2986 elf_link_hash_traverse (&htab->elf,
2987 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 2988
2989 if ((info->flags & DF_TEXTREL) != 0)
2990 {
2991 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2992 return FALSE;
0c715baa 2993 }
252b5132 2994 }
23209a78 2995 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 2996 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2997 return FALSE;
252b5132 2998 }
dc810e39 2999#undef add_dynamic_entry
252b5132 3000
b34976b6 3001 return TRUE;
252b5132
RH		 3002}
3003
67a4f2b7
AO		 3004static bfd_boolean
3005elf_i386_always_size_sections (bfd *output_bfd,
3006 struct bfd_link_info *info)
3007{
3008 asection *tls_sec = elf_hash_table (info)->tls_sec;
3009
3010 if (tls_sec)
3011 {
3012 struct elf_link_hash_entry *tlsbase;
3013
3014 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3015 "_TLS_MODULE_BASE_",
3016 FALSE, FALSE, FALSE);
3017
3018 if (tlsbase && tlsbase->type == STT_TLS)
3019 {
4dfe6ac6 3020 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3021 struct bfd_link_hash_entry *bh = NULL;
3022 const struct elf_backend_data *bed
3023 = get_elf_backend_data (output_bfd);
3024
4dfe6ac6
NC		 3025 htab = elf_i386_hash_table (info);
3026 if (htab == NULL)
3027 return FALSE;
3028
67a4f2b7
AO		 3029 if (!(_bfd_generic_link_add_one_symbol
3030 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3031 tls_sec, 0, NULL, FALSE,
3032 bed->collect, &bh)))
3033 return FALSE;
9f03412a 3034
4dfe6ac6 3035 htab->tls_module_base = bh;
9f03412a 3036
67a4f2b7
AO		 3037 tlsbase = (struct elf_link_hash_entry *)bh;
3038 tlsbase->def_regular = 1;
3039 tlsbase->other = STV_HIDDEN;
3040 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3041 }
3042 }
3043
3044 return TRUE;
3045}
3046
38701953
AM		 3047/* Set the correct type for an x86 ELF section. We do this by the
3048 section name, which is a hack, but ought to work. */
3049
b34976b6 3050static bfd_boolean
55fd94b0
AM		 3051elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3052 Elf_Internal_Shdr *hdr,
3053 asection *sec)
38701953 3054{
91d6fa6a 3055 const char *name;
38701953
AM		 3056
3057 name = bfd_get_section_name (abfd, sec);
3058
3059 /* This is an ugly, but unfortunately necessary hack that is
3060 needed when producing EFI binaries on x86. It tells
3061 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3062 containing ELF relocation info. We need this hack in order to
3063 be able to generate ELF binaries that can be translated into
3064 EFI applications (which are essentially COFF objects). Those
3065 files contain a COFF ".reloc" section inside an ELFNN object,
3066 which would normally cause BFD to segfault because it would
3067 attempt to interpret this section as containing relocation
3068 entries for section "oc". With this hack enabled, ".reloc"
3069 will be treated as a normal data section, which will avoid the
3070 segfault. However, you won't be able to create an ELFNN binary
3071 with a section named "oc" that needs relocations, but that's
3072 the kind of ugly side-effects you get when detecting section
3073 types based on their names... In practice, this limitation is
3074 unlikely to bite. */
3075 if (strcmp (name, ".reloc") == 0)
3076 hdr->sh_type = SHT_PROGBITS;
3077
b34976b6 3078 return TRUE;
38701953
AM		 3079}
3080
9f03412a
AO		 3081/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3082 executables. Rather than setting it to the beginning of the TLS
3083 section, we have to set it to the end. This function may be called
3084 multiple times, it is idempotent. */
3085
3086static void
eb4ff4d6 3087elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3088{
4dfe6ac6 3089 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3090 struct bfd_link_hash_entry *base;
3091
3092 if (!info->executable)
3093 return;
3094
4dfe6ac6
NC		 3095 htab = elf_i386_hash_table (info);
3096 if (htab == NULL)
3097 return;
9f03412a 3098
4dfe6ac6
NC		 3099 base = htab->tls_module_base;
3100 if (base == NULL)
9f03412a
AO		 3101 return;
3102
4dfe6ac6 3103 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3104}
3105
13ae64f3
JJ		 3106/* Return the base VMA address which should be subtracted from real addresses
3107 when resolving @dtpoff relocation.
3108 This is PT_TLS segment p_vaddr. */
3109
3110static bfd_vma
eb4ff4d6 3111elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3112{
e1918d23
AM		 3113 /* If tls_sec is NULL, we should have signalled an error already. */
3114 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3115 return 0;
e1918d23 3116 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3117}
3118
3119/* Return the relocation value for @tpoff relocation
3120 if STT_TLS virtual address is ADDRESS. */
3121
3122static bfd_vma
eb4ff4d6 3123elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3124{
e1918d23 3125 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3126 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3127 bfd_vma static_tls_size;
13ae64f3 3128
e1918d23
AM		 3129 /* If tls_sec is NULL, we should have signalled an error already. */
3130 if (htab->tls_sec == NULL)
6a30718d 3131 return 0;
7dc98aea
RO		 3132
3133 /* Consider special static TLS alignment requirements. */
3134 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3135 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3136}
3137
252b5132
RH		 3138/* Relocate an i386 ELF section. */
3139
b34976b6 3140static bfd_boolean
55fd94b0
AM		 3141elf_i386_relocate_section (bfd *output_bfd,
3142 struct bfd_link_info *info,
3143 bfd *input_bfd,
3144 asection *input_section,
3145 bfd_byte *contents,
3146 Elf_Internal_Rela *relocs,
3147 Elf_Internal_Sym *local_syms,
3148 asection **local_sections)
252b5132 3149{
6725bdbf 3150 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3151 Elf_Internal_Shdr *symtab_hdr;
3152 struct elf_link_hash_entry **sym_hashes;
3153 bfd_vma *local_got_offsets;
67a4f2b7 3154 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3155 Elf_Internal_Rela *rel;
3156 Elf_Internal_Rela *relend;
3348747a 3157 bfd_boolean is_vxworks_tls;
25e762b9 3158 unsigned plt_entry_size;
252b5132 3159
0ffa91dd 3160 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3161
6725bdbf 3162 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3163 if (htab == NULL)
3164 return FALSE;
0ffa91dd 3165 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3166 sym_hashes = elf_sym_hashes (input_bfd);
3167 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3168 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3169 /* We have to handle relocations in vxworks .tls_vars sections
3170 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3171 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3172 && info->shared
3348747a
NS		 3173 && !strcmp (input_section->output_section->name,
3174 ".tls_vars"));
252b5132 3175
eb4ff4d6 3176 elf_i386_set_tls_module_base (info);
9f03412a 3177
25e762b9
RM		 3178 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3179
252b5132
RH		 3180 rel = relocs;
3181 relend = relocs + input_section->reloc_count;
3182 for (; rel < relend; rel++)
3183 {
13ae64f3 3184 unsigned int r_type;
252b5132
RH		 3185 reloc_howto_type *howto;
3186 unsigned long r_symndx;
3187 struct elf_link_hash_entry *h;
3188 Elf_Internal_Sym *sym;
3189 asection *sec;
67a4f2b7 3190 bfd_vma off, offplt;
252b5132 3191 bfd_vma relocation;
b34976b6 3192 bfd_boolean unresolved_reloc;
252b5132 3193 bfd_reloc_status_type r;
1b452ec6 3194 unsigned int indx;
13ae64f3 3195 int tls_type;
1788fc08 3196 bfd_vma st_size;
252b5132
RH		 3197
3198 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3199 if (r_type == R_386_GNU_VTINHERIT
3200 || r_type == R_386_GNU_VTENTRY)
252b5132 3201 continue;
dc47f327 3202
55fd94b0 3203 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3204 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3205 >= R_386_ext - R_386_standard)
3206 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3207 >= R_386_irelative - R_386_ext))
252b5132 3208 {
6ba842b6 3209 (*_bfd_error_handler)
d003868e
AM		 3210 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3211 input_bfd, input_section, r_type);
252b5132 3212 bfd_set_error (bfd_error_bad_value);
b34976b6 3213 return FALSE;
252b5132 3214 }
1b452ec6 3215 howto = elf_howto_table + indx;
252b5132
RH		 3216
3217 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3218 h = NULL;
3219 sym = NULL;
3220 sec = NULL;
b34976b6 3221 unresolved_reloc = FALSE;
252b5132
RH		 3222 if (r_symndx < symtab_hdr->sh_info)
3223 {
3224 sym = local_syms + r_symndx;
3225 sec = local_sections[r_symndx];
3226 relocation = (sec->output_section->vma
3227 + sec->output_offset
3228 + sym->st_value);
1788fc08 3229 st_size = sym->st_size;
ab96bf03
AM		 3230
3231 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3232 && ((sec->flags & SEC_MERGE) != 0
3233 || (info->relocatable
3234 && sec->output_offset != 0)))
f8df10f4 3235 {
f8df10f4 3236 bfd_vma addend;
4a335f3d 3237 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3238
4a335f3d 3239 switch (howto->size)
f8df10f4 3240 {
4a335f3d
AM		 3241 case 0:
3242 addend = bfd_get_8 (input_bfd, where);
3243 if (howto->pc_relative)
3244 {
3245 addend = (addend ^ 0x80) - 0x80;
3246 addend += 1;
3247 }
3248 break;
3249 case 1:
3250 addend = bfd_get_16 (input_bfd, where);
3251 if (howto->pc_relative)
3252 {
3253 addend = (addend ^ 0x8000) - 0x8000;
3254 addend += 2;
3255 }
3256 break;
3257 case 2:
3258 addend = bfd_get_32 (input_bfd, where);
3259 if (howto->pc_relative)
3260 {
3261 addend = (addend ^ 0x80000000) - 0x80000000;
3262 addend += 4;
3263 }
3264 break;
3265 default:
3266 abort ();
f8df10f4
JJ		 3267 }
3268
ab96bf03
AM		 3269 if (info->relocatable)
3270 addend += sec->output_offset;
3271 else
3272 {
3273 asection *msec = sec;
3274 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3275 addend);
3276 addend -= relocation;
3277 addend += msec->output_section->vma + msec->output_offset;
3278 }
4a335f3d
AM		 3279
3280 switch (howto->size)
3281 {
3282 case 0:
16a10388 3283 /* FIXME: overflow checks. */
4a335f3d
AM		 3284 if (howto->pc_relative)
3285 addend -= 1;
3286 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3287 break;
3288 case 1:
3289 if (howto->pc_relative)
3290 addend -= 2;
3291 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3292 break;
3293 case 2:
3294 if (howto->pc_relative)
3295 addend -= 4;
3296 bfd_put_32 (input_bfd, addend, where);
3297 break;
3298 }
f8df10f4 3299 }
1f85278f
L		 3300 else if (!info->relocatable
3301 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3302 {
3303 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3304 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3305 FALSE);
c25bc9fc
L		 3306 if (h == NULL)
3307 abort ();
3308
23209a78 3309 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3310 h->root.u.def.value = sym->st_value;
3311 h->root.u.def.section = sec;
3312 }
252b5132
RH		 3313 }
3314 else
3315 {
3d540e93 3316 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3317 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3318
b2a8e766
AM		 3319 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3320 r_symndx, symtab_hdr, sym_hashes,
3321 h, sec, relocation,
62d887d4 3322 unresolved_reloc, warned, ignored);
1788fc08 3323 st_size = h->size;
252b5132
RH		 3324 }
3325
dbaa2011 3326 if (sec != NULL && discarded_section (sec))
0672748a 3327 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3328 rel, 1, relend, howto, 0, contents);
9635fe29 3329
ab96bf03
AM		 3330 if (info->relocatable)
3331 continue;
3332
cbe950e9
L		 3333 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3334 it here if it is defined in a non-shared object. */
3335 if (h != NULL
3336 && h->type == STT_GNU_IFUNC
3337 && h->def_regular)
3338 {
3339 asection *plt, *gotplt, *base_got;
3340 bfd_vma plt_index;
4c544807 3341 const char *name;
cbe950e9
L		 3342
3343 if ((input_section->flags & SEC_ALLOC) == 0
3344 || h->plt.offset == (bfd_vma) -1)
3345 abort ();
3346
3347 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3348 if (htab->elf.splt != NULL)
cbe950e9 3349 {
6de2ae4a
L		 3350 plt = htab->elf.splt;
3351 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3352 }
3353 else
3354 {
6de2ae4a
L		 3355 plt = htab->elf.iplt;
3356 gotplt = htab->elf.igotplt;
cbe950e9
L		 3357 }
3358
3359 relocation = (plt->output_section->vma
3360 + plt->output_offset + h->plt.offset);
3361
3362 switch (r_type)
3363 {
3364 default:
4c544807
L		 3365 if (h->root.root.string)
3366 name = h->root.root.string;
3367 else
3368 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3369 NULL);
cbe950e9
L		 3370 (*_bfd_error_handler)
3371 (_("%B: relocation %s against STT_GNU_IFUNC "
3372 "symbol `%s' isn't handled by %s"), input_bfd,
3373 elf_howto_table[r_type].name,
4c544807 3374 name, __FUNCTION__);
cbe950e9
L		 3375 bfd_set_error (bfd_error_bad_value);
3376 return FALSE;
3377
3378 case R_386_32:
710ab287 3379 /* Generate dynamic relcoation only when there is a
c293fa49 3380 non-GOT reference in a shared object. */
710ab287
L		 3381 if (info->shared && h->non_got_ref)
3382 {
3383 Elf_Internal_Rela outrel;
710ab287
L		 3384 asection *sreloc;
3385 bfd_vma offset;
3386
c25bc9fc
L		 3387 /* Need a dynamic relocation to get the real function
3388 adddress. */
710ab287
L		 3389 offset = _bfd_elf_section_offset (output_bfd,
3390 info,
3391 input_section,
3392 rel->r_offset);
3393 if (offset == (bfd_vma) -1
3394 || offset == (bfd_vma) -2)
3395 abort ();
3396
3397 outrel.r_offset = (input_section->output_section->vma
3398 + input_section->output_offset
3399 + offset);
3400
3401 if (h->dynindx == -1
44c4ea11
L		 3402 || h->forced_local
3403 || info->executable)
710ab287
L		 3404 {
3405 /* This symbol is resolved locally. */
56b8aada
L		 3406 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3407 bfd_put_32 (output_bfd,
3408 (h->root.u.def.value
3409 + h->root.u.def.section->output_section->vma
3410 + h->root.u.def.section->output_offset),
3411 contents + offset);
710ab287
L		 3412 }
3413 else
56b8aada 3414 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3415
6de2ae4a 3416 sreloc = htab->elf.irelifunc;
59d6ffb2 3417 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3418
3419 /* If this reloc is against an external symbol, we
3420 do not want to fiddle with the addend. Otherwise,
3421 we need to include the symbol value so that it
3422 becomes an addend for the dynamic reloc. For an
3423 internal symbol, we have updated addend. */
56b8aada 3424 continue;
710ab287 3425 }
d59a60e9 3426 /* FALLTHROUGH */
cbe950e9
L		 3427 case R_386_PC32:
3428 case R_386_PLT32:
3429 goto do_relocation;
3430
3431 case R_386_GOT32:
6de2ae4a 3432 base_got = htab->elf.sgot;
cbe950e9
L		 3433 off = h->got.offset;
3434
7afd84dc 3435 if (base_got == NULL)
cbe950e9
L		 3436 abort ();
3437
7afd84dc 3438 if (off == (bfd_vma) -1)
cbe950e9 3439 {
7afd84dc
L		 3440 /* We can't use h->got.offset here to save state, or
3441 even just remember the offset, as finish_dynamic_symbol
3442 would use that as offset into .got. */
6bbec505 3443
6de2ae4a 3444 if (htab->elf.splt != NULL)
7afd84dc 3445 {
25e762b9 3446 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3447 off = (plt_index + 3) * 4;
6de2ae4a 3448 base_got = htab->elf.sgotplt;
7afd84dc 3449 }
cbe950e9
L		 3450 else
3451 {
25e762b9 3452 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3453 off = plt_index * 4;
6de2ae4a 3454 base_got = htab->elf.igotplt;
7afd84dc
L		 3455 }
3456
3457 if (h->dynindx == -1
3458 || h->forced_local
3459 || info->symbolic)
3460 {
3461 /* This references the local defitionion. We must
3462 initialize this entry in the global offset table.
3463 Since the offset must always be a multiple of 8,
3464 we use the least significant bit to record
3465 whether we have initialized it already.
3466
3467 When doing a dynamic link, we create a .rela.got
3468 relocation entry to initialize the value. This
3469 is done in the finish_dynamic_symbol routine. */
3470 if ((off & 1) != 0)
3471 off &= ~1;
3472 else
3473 {
3474 bfd_put_32 (output_bfd, relocation,
3475 base_got->contents + off);
3476 h->got.offset |= 1;
3477 }
cbe950e9 3478 }
cbe950e9 3479
7afd84dc 3480 relocation = off;
cbe950e9 3481
7afd84dc 3482 /* Adjust for static executables. */
6de2ae4a 3483 if (htab->elf.splt == NULL)
7afd84dc
L		 3484 relocation += gotplt->output_offset;
3485 }
3486 else
0018b0a3
L		 3487 {
3488 relocation = (base_got->output_section->vma
3489 + base_got->output_offset + off
3490 - gotplt->output_section->vma
3491 - gotplt->output_offset);
3492 /* Adjust for static executables. */
6de2ae4a 3493 if (htab->elf.splt == NULL)
0018b0a3
L		 3494 relocation += gotplt->output_offset;
3495 }
3496
cbe950e9
L		 3497 goto do_relocation;
3498
3499 case R_386_GOTOFF:
3500 relocation -= (gotplt->output_section->vma
3501 + gotplt->output_offset);
3502 goto do_relocation;
3503 }
3504 }
3505
252b5132
RH		 3506 switch (r_type)
3507 {
3508 case R_386_GOT32:
3509 /* Relocation is to the entry for this symbol in the global
3510 offset table. */
6de2ae4a 3511 if (htab->elf.sgot == NULL)
ffb2e45b 3512 abort ();
252b5132
RH		 3513
3514 if (h != NULL)
3515 {
b34976b6 3516 bfd_boolean dyn;
252b5132
RH		 3517
3518 off = h->got.offset;
ebe50bae 3519 dyn = htab->elf.dynamic_sections_created;
26e41594 3520 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3521 || (info->shared
586119b3 3522 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3523 || (ELF_ST_VISIBILITY (h->other)
3524 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3525 {
3526 /* This is actually a static link, or it is a
3527 -Bsymbolic link and the symbol is defined
3528 locally, or the symbol was forced to be local
3529 because of a version file. We must initialize
3530 this entry in the global offset table. Since the
3531 offset must always be a multiple of 4, we use the
3532 least significant bit to record whether we have
3533 initialized it already.
3534
3535 When doing a dynamic link, we create a .rel.got
3536 relocation entry to initialize the value. This
3537 is done in the finish_dynamic_symbol routine. */
3538 if ((off & 1) != 0)
3539 off &= ~1;
3540 else
3541 {
3542 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3543 htab->elf.sgot->contents + off);
252b5132
RH		 3544 h->got.offset |= 1;
3545 }
3546 }
8c694914 3547 else
b34976b6 3548 unresolved_reloc = FALSE;
252b5132
RH		 3549 }
3550 else
3551 {
ffb2e45b
AM		 3552 if (local_got_offsets == NULL)
3553 abort ();
252b5132
RH		 3554
3555 off = local_got_offsets[r_symndx];
3556
3557 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3558 the least significant bit to record whether we have
3559 already generated the necessary reloc. */
252b5132
RH		 3560 if ((off & 1) != 0)
3561 off &= ~1;
3562 else
3563 {
6725bdbf 3564 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3565 htab->elf.sgot->contents + off);
252b5132
RH		 3566
3567 if (info->shared)
3568 {
947216bf
AM		 3569 asection *s;
3570 Elf_Internal_Rela outrel;
252b5132 3571
6de2ae4a 3572 s = htab->elf.srelgot;
947216bf 3573 if (s == NULL)
ffb2e45b 3574 abort ();
252b5132 3575
6de2ae4a
L		 3576 outrel.r_offset = (htab->elf.sgot->output_section->vma
3577 + htab->elf.sgot->output_offset
252b5132
RH		 3578 + off);
3579 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 3580 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 3581 }
3582
3583 local_got_offsets[r_symndx] |= 1;
3584 }
252b5132
RH		 3585 }
3586
ffb2e45b
AM		 3587 if (off >= (bfd_vma) -2)
3588 abort ();
3589
6de2ae4a
L		 3590 relocation = htab->elf.sgot->output_section->vma
3591 + htab->elf.sgot->output_offset + off
3592 - htab->elf.sgotplt->output_section->vma
3593 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3594 break;
3595
3596 case R_386_GOTOFF:
3597 /* Relocation is relative to the start of the global offset
3598 table. */
3599
90f487df
L		 3600 /* Check to make sure it isn't a protected function symbol
3601 for shared library since it may not be local when used
41bed6dd
L		 3602 as function address. We also need to make sure that a
3603 symbol is defined locally. */
3604 if (info->shared && h)
90f487df 3605 {
41bed6dd
L		 3606 if (!h->def_regular)
3607 {
3608 const char *v;
3609
3610 switch (ELF_ST_VISIBILITY (h->other))
3611 {
3612 case STV_HIDDEN:
3613 v = _("hidden symbol");
3614 break;
3615 case STV_INTERNAL:
3616 v = _("internal symbol");
3617 break;
3618 case STV_PROTECTED:
3619 v = _("protected symbol");
3620 break;
3621 default:
3622 v = _("symbol");
3623 break;
3624 }
3625
3626 (*_bfd_error_handler)
3627 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3628 input_bfd, v, h->root.root.string);
3629 bfd_set_error (bfd_error_bad_value);
3630 return FALSE;
3631 }
3632 else if (!info->executable
bdb892b9 3633 && !SYMBOLIC_BIND (info, h)
41bed6dd
L		 3634 && h->type == STT_FUNC
3635 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3636 {
3637 (*_bfd_error_handler)
3638 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3639 input_bfd, h->root.root.string);
3640 bfd_set_error (bfd_error_bad_value);
3641 return FALSE;
3642 }
90f487df
L		 3643 }
3644
8c37241b
JJ		 3645 /* Note that sgot is not involved in this
3646 calculation. We always want the start of .got.plt. If we
3647 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3648 permitted by the ABI, we might have to change this
3649 calculation. */
6de2ae4a
L		 3650 relocation -= htab->elf.sgotplt->output_section->vma
3651 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3652 break;
3653
3654 case R_386_GOTPC:
3655 /* Use global offset table as symbol value. */
6de2ae4a
L		 3656 relocation = htab->elf.sgotplt->output_section->vma
3657 + htab->elf.sgotplt->output_offset;
b34976b6 3658 unresolved_reloc = FALSE;
252b5132
RH		 3659 break;
3660
3661 case R_386_PLT32:
3662 /* Relocation is to the entry for this symbol in the
3663 procedure linkage table. */
3664
dd5724d5 3665 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3666 without using the procedure linkage table. */
252b5132
RH		 3667 if (h == NULL)
3668 break;
3669
dd5724d5 3670 if (h->plt.offset == (bfd_vma) -1
6de2ae4a 3671 || htab->elf.splt == NULL)
252b5132
RH		 3672 {
3673 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3674 happens when statically linking PIC code, or when
3675 using -Bsymbolic. */
252b5132
RH		 3676 break;
3677 }
3678
6de2ae4a
L		 3679 relocation = (htab->elf.splt->output_section->vma
3680 + htab->elf.splt->output_offset
252b5132 3681 + h->plt.offset);
b34976b6 3682 unresolved_reloc = FALSE;
252b5132
RH		 3683 break;
3684
1788fc08 3685 case R_386_SIZE32:
1788fc08
L		 3686 /* Set to symbol size. */
3687 relocation = st_size;
3688 /* Fall through. */
3689
252b5132
RH		 3690 case R_386_32:
3691 case R_386_PC32:
3348747a
NS		 3692 if ((input_section->flags & SEC_ALLOC) == 0
3693 || is_vxworks_tls)
ec338859
AM		 3694 break;
3695
12d0ee4a 3696 if ((info->shared
ef5aade5
L		 3697 && (h == NULL
3698 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3699 || h->root.type != bfd_link_hash_undefweak)
1788fc08 3700 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3701 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3702 || (ELIMINATE_COPY_RELOCS
3703 && !info->shared
12d0ee4a
AM		 3704 && h != NULL
3705 && h->dynindx != -1
f5385ebf
AM		 3706 && !h->non_got_ref
3707 && ((h->def_dynamic
3708 && !h->def_regular)
28d0b90e 3709 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3710 || h->root.type == bfd_link_hash_undefined)))
252b5132 3711 {
947216bf 3712 Elf_Internal_Rela outrel;
b34976b6 3713 bfd_boolean skip, relocate;
0c715baa 3714 asection *sreloc;
252b5132
RH		 3715
3716 /* When generating a shared object, these relocations
3717 are copied into the output file to be resolved at run
3718 time. */
3719
b34976b6
AM		 3720 skip = FALSE;
3721 relocate = FALSE;
252b5132 3722
c629eae0
JJ		 3723 outrel.r_offset =
3724 _bfd_elf_section_offset (output_bfd, info, input_section,
3725 rel->r_offset);
3726 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3727 skip = TRUE;
0bb2d96a 3728 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3729 skip = TRUE, relocate = TRUE;
252b5132
RH		 3730 outrel.r_offset += (input_section->output_section->vma
3731 + input_section->output_offset);
3732
3733 if (skip)
0bb2d96a 3734 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3735 else if (h != NULL
3736 && h->dynindx != -1
3737 && (r_type == R_386_PC32
3738 || !info->shared
55255dae 3739 || !SYMBOLIC_BIND (info, h)
f5385ebf 3740 || !h->def_regular))
0bb2d96a 3741 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3742 else
3743 {
5a15f56f 3744 /* This symbol is local, or marked to become local. */
b34976b6 3745 relocate = TRUE;
5a15f56f 3746 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3747 }
3748
cbe950e9 3749 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3750
62d78908
L		 3751 if (sreloc == NULL || sreloc->contents == NULL)
3752 {
3753 r = bfd_reloc_notsupported;
3754 goto check_relocation_error;
3755 }
0c715baa 3756
59d6ffb2 3757 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 3758
3759 /* If this reloc is against an external symbol, we do
3760 not want to fiddle with the addend. Otherwise, we
3761 need to include the symbol value so that it becomes
3762 an addend for the dynamic reloc. */
0f88be7a 3763 if (! relocate)
252b5132
RH		 3764 continue;
3765 }
252b5132
RH		 3766 break;
3767
37e55690 3768 case R_386_TLS_IE:
1d85728f 3769 if (!info->executable)
37e55690 3770 {
947216bf 3771 Elf_Internal_Rela outrel;
37e55690 3772 asection *sreloc;
37e55690
JJ		 3773
3774 outrel.r_offset = rel->r_offset
3775 + input_section->output_section->vma
3776 + input_section->output_offset;
3777 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3778 sreloc = elf_section_data (input_section)->sreloc;
3779 if (sreloc == NULL)
3780 abort ();
59d6ffb2 3781 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 3782 }
3783 /* Fall through */
3784
13ae64f3 3785 case R_386_TLS_GD:
67a4f2b7
AO		 3786 case R_386_TLS_GOTDESC:
3787 case R_386_TLS_DESC_CALL:
13ae64f3 3788 case R_386_TLS_IE_32:
37e55690 3789 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3790 tls_type = GOT_UNKNOWN;
3791 if (h == NULL && local_got_offsets)
3792 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3793 else if (h != NULL)
142411ca 3794 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3795 if (tls_type == GOT_TLS_IE)
3796 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3797
3798 if (! elf_i386_tls_transition (info, input_bfd,
3799 input_section, contents,
3800 symtab_hdr, sym_hashes,
3801 &r_type, tls_type, rel,
4c544807 3802 relend, h, r_symndx))
142411ca 3803 return FALSE;
13ae64f3
JJ		 3804
3805 if (r_type == R_386_TLS_LE_32)
3806 {
82e51918 3807 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3808 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3809 {
142411ca 3810 unsigned int type;
13ae64f3
JJ		 3811 bfd_vma roff;
3812
3813 /* GD->LE transition. */
13ae64f3 3814 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3815 if (type == 0x04)
3816 {
3817 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3818 Change it into:
3819 movl %gs:0, %eax; subl $foo@tpoff, %eax
3820 (6 byte form of subl). */
13ae64f3
JJ		 3821 memcpy (contents + rel->r_offset - 3,
3822 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3823 roff = rel->r_offset + 5;
13ae64f3
JJ		 3824 }
3825 else
3826 {
142411ca
L		 3827 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3828 Change it into:
3829 movl %gs:0, %eax; subl $foo@tpoff, %eax
3830 (6 byte form of subl). */
3831 memcpy (contents + rel->r_offset - 2,
3832 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3833 roff = rel->r_offset + 6;
13ae64f3 3834 }
eb4ff4d6 3835 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3836 contents + roff);
a3fadc9a 3837 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 3838 rel++;
3839 continue;
3840 }
67a4f2b7
AO		 3841 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3842 {
3843 /* GDesc -> LE transition.
3844 It's originally something like:
3845 leal x@tlsdesc(%ebx), %eax
3846
3847 leal x@ntpoff, %eax
3848
3849 Registers other than %eax may be set up here. */
3850
142411ca 3851 unsigned int val;
67a4f2b7
AO		 3852 bfd_vma roff;
3853
67a4f2b7 3854 roff = rel->r_offset;
67a4f2b7 3855 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3856
3857 /* Now modify the instruction as appropriate. */
3858 /* aoliva FIXME: remove the above and xor the byte
3859 below with 0x86. */
3860 bfd_put_8 (output_bfd, val ^ 0x86,
3861 contents + roff - 1);
eb4ff4d6 3862 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 3863 contents + roff);
3864 continue;
3865 }
3866 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3867 {
3868 /* GDesc -> LE transition.
3869 It's originally:
3870 call *(%eax)
3871 Turn it into:
142411ca 3872 xchg %ax,%ax */
67a4f2b7 3873
67a4f2b7 3874 bfd_vma roff;
6bbec505 3875
67a4f2b7 3876 roff = rel->r_offset;
10efb593 3877 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3878 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3879 continue;
3880 }
37e55690 3881 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 3882 {
142411ca 3883 unsigned int val;
13ae64f3
JJ		 3884
3885 /* IE->LE transition:
37e55690
JJ		 3886 Originally it can be one of:
3887 movl foo, %eax
3888 movl foo, %reg
3889 addl foo, %reg
3890 We change it into:
3891 movl $foo, %eax
3892 movl $foo, %reg
3893 addl $foo, %reg. */
37e55690 3894 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 3895 if (val == 0xa1)
3896 {
3897 /* movl foo, %eax. */
55fd94b0
AM		 3898 bfd_put_8 (output_bfd, 0xb8,
3899 contents + rel->r_offset - 1);
37e55690 3900 }
299bf759 3901 else
37e55690 3902 {
142411ca
L		 3903 unsigned int type;
3904
55fd94b0
AM		 3905 type = bfd_get_8 (input_bfd,
3906 contents + rel->r_offset - 2);
299bf759 3907 switch (type)
26e41594 3908 {
299bf759
L		 3909 case 0x8b:
3910 /* movl */
299bf759
L		 3911 bfd_put_8 (output_bfd, 0xc7,
3912 contents + rel->r_offset - 2);
3913 bfd_put_8 (output_bfd,
3914 0xc0 | ((val >> 3) & 7),
3915 contents + rel->r_offset - 1);
3916 break;
3917 case 0x03:
3918 /* addl */
299bf759
L		 3919 bfd_put_8 (output_bfd, 0x81,
3920 contents + rel->r_offset - 2);
3921 bfd_put_8 (output_bfd,
3922 0xc0 | ((val >> 3) & 7),
3923 contents + rel->r_offset - 1);
3924 break;
3925 default:
3926 BFD_FAIL ();
3927 break;
26e41594 3928 }
37e55690 3929 }
eb4ff4d6 3930 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3931 contents + rel->r_offset);
3932 continue;
3933 }
3934 else
3935 {
3936 unsigned int val, type;
3937
3938 /* {IE_32,GOTIE}->LE transition:
3939 Originally it can be one of:
13ae64f3 3940 subl foo(%reg1), %reg2
13ae64f3 3941 movl foo(%reg1), %reg2
37e55690 3942 addl foo(%reg1), %reg2
13ae64f3
JJ		 3943 We change it into:
3944 subl $foo, %reg2
37e55690
JJ		 3945 movl $foo, %reg2 (6 byte form)
3946 addl $foo, %reg2. */
13ae64f3
JJ		 3947 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3948 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 3949 if (type == 0x8b)
3950 {
3951 /* movl */
13ae64f3
JJ		 3952 bfd_put_8 (output_bfd, 0xc7,
3953 contents + rel->r_offset - 2);
3954 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3955 contents + rel->r_offset - 1);
3956 }
3957 else if (type == 0x2b)
3958 {
3959 /* subl */
13ae64f3
JJ		 3960 bfd_put_8 (output_bfd, 0x81,
3961 contents + rel->r_offset - 2);
3962 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3963 contents + rel->r_offset - 1);
3964 }
37e55690
JJ		 3965 else if (type == 0x03)
3966 {
3967 /* addl */
3968 bfd_put_8 (output_bfd, 0x81,
3969 contents + rel->r_offset - 2);
3970 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3971 contents + rel->r_offset - 1);
3972 }
13ae64f3
JJ		 3973 else
3974 BFD_FAIL ();
37e55690 3975 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 3976 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3977 contents + rel->r_offset);
3978 else
eb4ff4d6 3979 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 3980 contents + rel->r_offset);
13ae64f3
JJ		 3981 continue;
3982 }
3983 }
3984
6de2ae4a 3985 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 3986 abort ();
3987
3988 if (h != NULL)
67a4f2b7
AO		 3989 {
3990 off = h->got.offset;
3991 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
3992 }
13ae64f3
JJ		 3993 else
3994 {
3995 if (local_got_offsets == NULL)
3996 abort ();
3997
3998 off = local_got_offsets[r_symndx];
67a4f2b7 3999 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4000 }
4001
4002 if ((off & 1) != 0)
4003 off &= ~1;
26e41594 4004 else
13ae64f3 4005 {
947216bf 4006 Elf_Internal_Rela outrel;
91d6fa6a 4007 int dr_type;
67a4f2b7 4008 asection *sreloc;
13ae64f3 4009
6de2ae4a 4010 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4011 abort ();
4012
67a4f2b7
AO		 4013 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4014
4015 if (GOT_TLS_GDESC_P (tls_type))
4016 {
59d6ffb2 4017 bfd_byte *loc;
67a4f2b7
AO		 4018 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4019 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4020 <= htab->elf.sgotplt->size);
4021 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4022 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4023 + offplt
4024 + htab->sgotplt_jump_table_size);
6de2ae4a 4025 sreloc = htab->elf.srelplt;
67a4f2b7 4026 loc = sreloc->contents;
5ae0bfb6
RS		 4027 loc += (htab->next_tls_desc_index++
4028 * sizeof (Elf32_External_Rel));
67a4f2b7 4029 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4030 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4031 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4032 if (indx == 0)
4033 {
4034 BFD_ASSERT (! unresolved_reloc);
4035 bfd_put_32 (output_bfd,
eb4ff4d6 4036 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4037 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4038 + htab->sgotplt_jump_table_size + 4);
4039 }
4040 else
4041 {
4042 bfd_put_32 (output_bfd, 0,
6de2ae4a 4043 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4044 + htab->sgotplt_jump_table_size + 4);
4045 }
4046 }
4047
6de2ae4a 4048 sreloc = htab->elf.srelgot;
67a4f2b7 4049
6de2ae4a
L		 4050 outrel.r_offset = (htab->elf.sgot->output_section->vma
4051 + htab->elf.sgot->output_offset + off);
13ae64f3 4052
67a4f2b7 4053 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4054 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4055 else if (GOT_TLS_GDESC_P (tls_type))
4056 goto dr_done;
37e55690
JJ		 4057 else if (tls_type == GOT_TLS_IE_POS)
4058 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4059 else
4060 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4061
37e55690 4062 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4063 bfd_put_32 (output_bfd,
4064 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4065 htab->elf.sgot->contents + off);
37e55690 4066 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4067 bfd_put_32 (output_bfd,
eb4ff4d6 4068 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4069 htab->elf.sgot->contents + off);
67a4f2b7 4070 else if (dr_type != R_386_TLS_DESC)
c366c25e 4071 bfd_put_32 (output_bfd, 0,
6de2ae4a 4072 htab->elf.sgot->contents + off);
13ae64f3 4073 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4074
59d6ffb2 4075 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4076
67a4f2b7 4077 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4078 {
4079 if (indx == 0)
4080 {
82e51918 4081 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4082 bfd_put_32 (output_bfd,
eb4ff4d6 4083 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4084 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4085 }
4086 else
4087 {
4088 bfd_put_32 (output_bfd, 0,
6de2ae4a 4089 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4090 outrel.r_info = ELF32_R_INFO (indx,
4091 R_386_TLS_DTPOFF32);
4092 outrel.r_offset += 4;
59d6ffb2 4093 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4094 }
4095 }
37e55690
JJ		 4096 else if (tls_type == GOT_TLS_IE_BOTH)
4097 {
4098 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4099 (indx == 0
4100 ? relocation - elf_i386_dtpoff_base (info)
4101 : 0),
6de2ae4a 4102 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4103 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4104 outrel.r_offset += 4;
59d6ffb2 4105 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4106 }
13ae64f3 4107
67a4f2b7 4108 dr_done:
13ae64f3
JJ		 4109 if (h != NULL)
4110 h->got.offset |= 1;
4111 else
4112 local_got_offsets[r_symndx] |= 1;
4113 }
4114
67a4f2b7
AO		 4115 if (off >= (bfd_vma) -2
4116 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4117 abort ();
67a4f2b7
AO		 4118 if (r_type == R_386_TLS_GOTDESC
4119 || r_type == R_386_TLS_DESC_CALL)
4120 {
4121 relocation = htab->sgotplt_jump_table_size + offplt;
4122 unresolved_reloc = FALSE;
4123 }
4124 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4125 {
6de2ae4a
L		 4126 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4127 + htab->elf.sgotplt->output_offset;
4128 relocation = htab->elf.sgot->output_section->vma
4129 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4130 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4131 && tls_type == GOT_TLS_IE_BOTH)
4132 relocation += 4;
4133 if (r_type == R_386_TLS_IE)
8c37241b 4134 relocation += g_o_t;
b34976b6 4135 unresolved_reloc = FALSE;
13ae64f3 4136 }
67a4f2b7 4137 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4138 {
4139 unsigned int val, type;
4140 bfd_vma roff;
4141
4142 /* GD->IE transition. */
13ae64f3 4143 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4144 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4145 if (type == 0x04)
4146 {
4147 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4148 Change it into:
4149 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4150 val >>= 3;
142411ca 4151 roff = rel->r_offset - 3;
13ae64f3
JJ		 4152 }
4153 else
4154 {
4155 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4156 Change it into:
4157 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4158 roff = rel->r_offset - 2;
4159 }
4160 memcpy (contents + roff,
4161 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4162 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4163 /* If foo is used only with foo@gotntpoff(%reg) and
4164 foo@indntpoff, but not with foo@gottpoff(%reg), change
4165 subl $foo@gottpoff(%reg), %eax
4166 into:
4167 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4168 if (tls_type == GOT_TLS_IE_POS)
4169 contents[roff + 6] = 0x03;
8c37241b 4170 bfd_put_32 (output_bfd,
6de2ae4a
L		 4171 htab->elf.sgot->output_section->vma
4172 + htab->elf.sgot->output_offset + off
4173 - htab->elf.sgotplt->output_section->vma
4174 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4175 contents + roff + 8);
4176 /* Skip R_386_PLT32. */
4177 rel++;
4178 continue;
4179 }
67a4f2b7
AO		 4180 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4181 {
4182 /* GDesc -> IE transition.
4183 It's originally something like:
4184 leal x@tlsdesc(%ebx), %eax
4185
4186 Change it to:
142411ca 4187 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4188 or:
4189 movl x@gottpoff(%ebx), %eax # before negl %eax
4190
4191 Registers other than %eax may be set up here. */
4192
67a4f2b7
AO		 4193 bfd_vma roff;
4194
4195 /* First, make sure it's a leal adding ebx to a 32-bit
4196 offset into any register, although it's probably
4197 almost always going to be eax. */
4198 roff = rel->r_offset;
67a4f2b7
AO		 4199
4200 /* Now modify the instruction as appropriate. */
4201 /* To turn a leal into a movl in the form we use it, it
4202 suffices to change the first byte from 0x8d to 0x8b.
4203 aoliva FIXME: should we decide to keep the leal, all
4204 we have to do is remove the statement below, and
4205 adjust the relaxation of R_386_TLS_DESC_CALL. */
4206 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4207
4208 if (tls_type == GOT_TLS_IE_BOTH)
4209 off += 4;
4210
4211 bfd_put_32 (output_bfd,
6de2ae4a
L		 4212 htab->elf.sgot->output_section->vma
4213 + htab->elf.sgot->output_offset + off
4214 - htab->elf.sgotplt->output_section->vma
4215 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4216 contents + roff);
4217 continue;
4218 }
4219 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4220 {
4221 /* GDesc -> IE transition.
4222 It's originally:
4223 call *(%eax)
4224
4225 Change it to:
142411ca 4226 xchg %ax,%ax
67a4f2b7
AO		 4227 or
4228 negl %eax
4229 depending on how we transformed the TLS_GOTDESC above.
4230 */
4231
67a4f2b7
AO		 4232 bfd_vma roff;
4233
67a4f2b7 4234 roff = rel->r_offset;
67a4f2b7
AO		 4235
4236 /* Now modify the instruction as appropriate. */
4237 if (tls_type != GOT_TLS_IE_NEG)
4238 {
10efb593
L		 4239 /* xchg %ax,%ax */
4240 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4241 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4242 }
4243 else
4244 {
4245 /* negl %eax */
4246 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4247 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4248 }
4249
4250 continue;
4251 }
4252 else
4253 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4254 break;
4255
4256 case R_386_TLS_LDM:
142411ca
L		 4257 if (! elf_i386_tls_transition (info, input_bfd,
4258 input_section, contents,
4259 symtab_hdr, sym_hashes,
4260 &r_type, GOT_UNKNOWN, rel,
4c544807 4261 relend, h, r_symndx))
142411ca 4262 return FALSE;
13ae64f3 4263
142411ca
L		 4264 if (r_type != R_386_TLS_LDM)
4265 {
13ae64f3 4266 /* LD->LE transition:
13ae64f3
JJ		 4267 leal foo(%reg), %eax; call ___tls_get_addr.
4268 We change it into:
4269 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4270 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4271 memcpy (contents + rel->r_offset - 2,
4272 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4273 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4274 rel++;
4275 continue;
4276 }
4277
6de2ae4a 4278 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4279 abort ();
4280
4281 off = htab->tls_ldm_got.offset;
4282 if (off & 1)
4283 off &= ~1;
4284 else
4285 {
947216bf 4286 Elf_Internal_Rela outrel;
13ae64f3 4287
6de2ae4a 4288 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4289 abort ();
4290
6de2ae4a
L		 4291 outrel.r_offset = (htab->elf.sgot->output_section->vma
4292 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4293
4294 bfd_put_32 (output_bfd, 0,
6de2ae4a 4295 htab->elf.sgot->contents + off);
13ae64f3 4296 bfd_put_32 (output_bfd, 0,
6de2ae4a 4297 htab->elf.sgot->contents + off + 4);
13ae64f3 4298 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4299 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4300 htab->tls_ldm_got.offset |= 1;
4301 }
6de2ae4a
L		 4302 relocation = htab->elf.sgot->output_section->vma
4303 + htab->elf.sgot->output_offset + off
4304 - htab->elf.sgotplt->output_section->vma
4305 - htab->elf.sgotplt->output_offset;
b34976b6 4306 unresolved_reloc = FALSE;
13ae64f3
JJ		 4307 break;
4308
4309 case R_386_TLS_LDO_32:
959b0961 4310 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4311 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4312 else
4313 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4314 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4315 break;
4316
4317 case R_386_TLS_LE_32:
13ae64f3 4318 case R_386_TLS_LE:
1d85728f 4319 if (!info->executable)
37e55690 4320 {
947216bf 4321 Elf_Internal_Rela outrel;
37e55690 4322 asection *sreloc;
37e55690
JJ		 4323
4324 outrel.r_offset = rel->r_offset
4325 + input_section->output_section->vma
4326 + input_section->output_offset;
4327 if (h != NULL && h->dynindx != -1)
4328 indx = h->dynindx;
4329 else
4330 indx = 0;
4331 if (r_type == R_386_TLS_LE_32)
4332 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4333 else
4334 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4335 sreloc = elf_section_data (input_section)->sreloc;
4336 if (sreloc == NULL)
4337 abort ();
59d6ffb2 4338 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4339 if (indx)
4340 continue;
4341 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4342 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4343 else
eb4ff4d6 4344 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4345 }
4346 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4347 relocation = elf_i386_tpoff (info, relocation);
37e55690 4348 else
eb4ff4d6 4349 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4350 break;
4351
252b5132
RH		 4352 default:
4353 break;
4354 }
4355
239e1f3a
AM		 4356 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4357 because such sections are not SEC_ALLOC and thus ld.so will
4358 not process them. */
8c694914 4359 if (unresolved_reloc
239e1f3a 4360 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4361 && h->def_dynamic)
4362 && _bfd_elf_section_offset (output_bfd, info, input_section,
4363 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4364 {
4365 (*_bfd_error_handler)
843fe662 4366 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4367 input_bfd,
4368 input_section,
6a30718d 4369 (long) rel->r_offset,
843fe662 4370 howto->name,
6a30718d 4371 h->root.root.string);
b34976b6 4372 return FALSE;
6a30718d 4373 }
83be169b 4374
cbe950e9 4375do_relocation:
252b5132
RH		 4376 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4377 contents, rel->r_offset,
55fd94b0 4378 relocation, 0);
252b5132 4379
62d78908 4380check_relocation_error:
cf5c0c5b 4381 if (r != bfd_reloc_ok)
252b5132 4382 {
cf5c0c5b 4383 const char *name;
ffb2e45b 4384
cf5c0c5b
AM		 4385 if (h != NULL)
4386 name = h->root.root.string;
4387 else
4388 {
4389 name = bfd_elf_string_from_elf_section (input_bfd,
4390 symtab_hdr->sh_link,
4391 sym->st_name);
4392 if (name == NULL)
b34976b6 4393 return FALSE;
cf5c0c5b
AM		 4394 if (*name == '\0')
4395 name = bfd_section_name (input_bfd, sec);
4396 }
ffb2e45b 4397
cf5c0c5b
AM		 4398 if (r == bfd_reloc_overflow)
4399 {
cf5c0c5b 4400 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4401 (info, (h ? &h->root : NULL), name, howto->name,
4402 (bfd_vma) 0, input_bfd, input_section,
4403 rel->r_offset)))
b34976b6 4404 return FALSE;
cf5c0c5b
AM		 4405 }
4406 else
4407 {
4408 (*_bfd_error_handler)
d003868e
AM		 4409 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4410 input_bfd, input_section,
cf5c0c5b 4411 (long) rel->r_offset, name, (int) r);
b34976b6 4412 return FALSE;
cf5c0c5b 4413 }
252b5132
RH		 4414 }
4415 }
4416
b34976b6 4417 return TRUE;
252b5132
RH		 4418}
4419
4420/* Finish up dynamic symbol handling. We set the contents of various
4421 dynamic sections here. */
4422
b34976b6 4423static bfd_boolean
55fd94b0
AM		 4424elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4425 struct bfd_link_info *info,
4426 struct elf_link_hash_entry *h,
4427 Elf_Internal_Sym *sym)
252b5132 4428{
6725bdbf 4429 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4430 unsigned plt_entry_size;
4431 const struct elf_i386_backend_data *abed;
252b5132 4432
6725bdbf 4433 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4434 if (htab == NULL)
4435 return FALSE;
252b5132 4436
25e762b9
RM		 4437 abed = get_elf_i386_backend_data (output_bfd);
4438 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4439
252b5132
RH		 4440 if (h->plt.offset != (bfd_vma) -1)
4441 {
252b5132
RH		 4442 bfd_vma plt_index;
4443 bfd_vma got_offset;
947216bf
AM		 4444 Elf_Internal_Rela rel;
4445 bfd_byte *loc;
cbe950e9
L		 4446 asection *plt, *gotplt, *relplt;
4447
4448 /* When building a static executable, use .iplt, .igot.plt and
4449 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4450 if (htab->elf.splt != NULL)
cbe950e9 4451 {
6de2ae4a
L		 4452 plt = htab->elf.splt;
4453 gotplt = htab->elf.sgotplt;
4454 relplt = htab->elf.srelplt;
cbe950e9
L		 4455 }
4456 else
4457 {
6de2ae4a
L		 4458 plt = htab->elf.iplt;
4459 gotplt = htab->elf.igotplt;
4460 relplt = htab->elf.irelplt;
cbe950e9 4461 }
252b5132
RH		 4462
4463 /* This symbol has an entry in the procedure linkage table. Set
4464 it up. */
4465
cbe950e9
L		 4466 if ((h->dynindx == -1
4467 && !((h->forced_local || info->executable)
4468 && h->def_regular
4469 && h->type == STT_GNU_IFUNC))
4470 || plt == NULL
4471 || gotplt == NULL
4472 || relplt == NULL)
cec7f46a 4473 abort ();
252b5132
RH		 4474
4475 /* Get the index in the procedure linkage table which
4476 corresponds to this symbol. This is the index of this symbol
4477 in all the symbols for which we are making plt entries. The
cbe950e9 4478 first entry in the procedure linkage table is reserved.
252b5132 4479
cbe950e9 4480 Get the offset into the .got table of the entry that
252b5132 4481 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4482 The first three are reserved.
6bbec505 4483
cbe950e9
L		 4484 For static executables, we don't reserve anything. */
4485
6de2ae4a 4486 if (plt == htab->elf.splt)
cbe950e9 4487 {
e1f98742
L		 4488 got_offset = h->plt.offset / plt_entry_size - 1;
4489 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4490 }
4491 else
4492 {
e1f98742
L		 4493 got_offset = h->plt.offset / plt_entry_size;
4494 got_offset = got_offset * 4;
cbe950e9 4495 }
252b5132
RH		 4496
4497 /* Fill in the entry in the procedure linkage table. */
4498 if (! info->shared)
4499 {
25e762b9
RM		 4500 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4501 abed->plt->plt_entry_size);
252b5132 4502 bfd_put_32 (output_bfd,
cbe950e9
L		 4503 (gotplt->output_section->vma
4504 + gotplt->output_offset
252b5132 4505 + got_offset),
25e762b9
RM		 4506 plt->contents + h->plt.offset
4507 + abed->plt->plt_got_offset);
eac338cf 4508
25e762b9 4509 if (abed->is_vxworks)
eac338cf
PB		 4510 {
4511 int s, k, reloc_index;
4512
4513 /* Create the R_386_32 relocation referencing the GOT
4514 for this PLT entry. */
4515
4516 /* S: Current slot number (zero-based). */
25e762b9
RM		 4517 s = ((h->plt.offset - abed->plt->plt_entry_size)
4518 / abed->plt->plt_entry_size);
eac338cf
PB		 4519 /* K: Number of relocations for PLTResolve. */
4520 if (info->shared)
4521 k = PLTRESOLVE_RELOCS_SHLIB;
4522 else
4523 k = PLTRESOLVE_RELOCS;
4524 /* Skip the PLTresolve relocations, and the relocations for
4525 the other PLT slots. */
4526 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4527 loc = (htab->srelplt2->contents + reloc_index
4528 * sizeof (Elf32_External_Rel));
4529
6de2ae4a
L		 4530 rel.r_offset = (htab->elf.splt->output_section->vma
4531 + htab->elf.splt->output_offset
eac338cf 4532 + h->plt.offset + 2),
7325306f 4533 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4534 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4535
4536 /* Create the R_386_32 relocation referencing the beginning of
4537 the PLT for this GOT entry. */
6de2ae4a
L		 4538 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4539 + htab->elf.sgotplt->output_offset
eac338cf 4540 + got_offset);
7325306f 4541 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4542 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4543 loc + sizeof (Elf32_External_Rel));
eac338cf 4544 }
252b5132
RH		 4545 }
4546 else
4547 {
25e762b9
RM		 4548 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4549 abed->plt->plt_entry_size);
252b5132 4550 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4551 plt->contents + h->plt.offset
4552 + abed->plt->plt_got_offset);
252b5132
RH		 4553 }
4554
252b5132
RH		 4555 /* Fill in the entry in the global offset table. */
4556 bfd_put_32 (output_bfd,
cbe950e9
L		 4557 (plt->output_section->vma
4558 + plt->output_offset
252b5132 4559 + h->plt.offset
25e762b9 4560 + abed->plt->plt_lazy_offset),
cbe950e9 4561 gotplt->contents + got_offset);
252b5132
RH		 4562
4563 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4564 rel.r_offset = (gotplt->output_section->vma
4565 + gotplt->output_offset
252b5132 4566 + got_offset);
cbe950e9
L		 4567 if (h->dynindx == -1
4568 || ((info->executable
4569 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4570 && h->def_regular
4571 && h->type == STT_GNU_IFUNC))
4572 {
4573 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4574 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4575 in the .got.plt section. */
4576 bfd_put_32 (output_bfd,
23209a78 4577 (h->root.u.def.value
cbe950e9
L		 4578 + h->root.u.def.section->output_section->vma
4579 + h->root.u.def.section->output_offset),
4580 gotplt->contents + got_offset);
4581 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4582 /* R_386_IRELATIVE comes last. */
4583 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4584 }
4585 else
e1f98742
L		 4586 {
4587 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4588 plt_index = htab->next_jump_slot_index++;
4589 }
cbe950e9 4590 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4591 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4592
e1f98742
L		 4593 /* Don't fill PLT entry for static executables. */
4594 if (plt == htab->elf.splt)
4595 {
4596 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4597 plt->contents + h->plt.offset
4598 + abed->plt->plt_reloc_offset);
4599 bfd_put_32 (output_bfd, - (h->plt.offset
4600 + abed->plt->plt_plt_offset + 4),
4601 plt->contents + h->plt.offset
4602 + abed->plt->plt_plt_offset);
4603 }
4604
f5385ebf 4605 if (!h->def_regular)
252b5132
RH		 4606 {
4607 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 4608 the .plt section. Leave the value if there were any
4609 relocations where pointer equality matters (this is a clue
51b64d56
AM		 4610 for the dynamic linker, to make function pointer
4611 comparisons work between an application and shared
c6585bbb
JJ		 4612 library), otherwise set it to zero. If a function is only
4613 called from a binary, there is no need to slow down
4614 shared libraries because of that. */
252b5132 4615 sym->st_shndx = SHN_UNDEF;
f5385ebf 4616 if (!h->pointer_equality_needed)
c6585bbb 4617 sym->st_value = 0;
252b5132
RH		 4618 }
4619 }
4620
13ae64f3 4621 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4622 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4623 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4624 {
947216bf 4625 Elf_Internal_Rela rel;
252b5132
RH		 4626
4627 /* This symbol has an entry in the global offset table. Set it
4628 up. */
4629
6de2ae4a 4630 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4631 abort ();
252b5132 4632
6de2ae4a
L		 4633 rel.r_offset = (htab->elf.sgot->output_section->vma
4634 + htab->elf.sgot->output_offset
dc810e39 4635 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4636
dd5724d5
AM		 4637 /* If this is a static link, or it is a -Bsymbolic link and the
4638 symbol is defined locally or was forced to be local because
4639 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4640 The entry in the global offset table will already have been
4641 initialized in the relocate_section function. */
710ab287 4642 if (h->def_regular
0018b0a3
L		 4643 && h->type == STT_GNU_IFUNC)
4644 {
710ab287
L		 4645 if (info->shared)
4646 {
4647 /* Generate R_386_GLOB_DAT. */
4648 goto do_glob_dat;
4649 }
4650 else
4651 {
cd2b2c10
L		 4652 asection *plt;
4653
710ab287
L		 4654 if (!h->pointer_equality_needed)
4655 abort ();
4656
4657 /* For non-shared object, we can't use .got.plt, which
4658 contains the real function addres if we need pointer
4659 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4660 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4661 bfd_put_32 (output_bfd,
4662 (plt->output_section->vma
4663 + plt->output_offset + h->plt.offset),
6de2ae4a 4664 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4665 return TRUE;
4666 }
0018b0a3
L		 4667 }
4668 else if (info->shared
4669 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4670 {
6725bdbf 4671 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4672 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4673 }
252b5132
RH		 4674 else
4675 {
dd5724d5 4676 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4677do_glob_dat:
6725bdbf 4678 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4679 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4680 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4681 }
4682
59d6ffb2 4683 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 4684 }
4685
f5385ebf 4686 if (h->needs_copy)
252b5132 4687 {
947216bf 4688 Elf_Internal_Rela rel;
252b5132
RH		 4689
4690 /* This symbol needs a copy reloc. Set it up. */
4691
ffb2e45b
AM		 4692 if (h->dynindx == -1
4693 || (h->root.type != bfd_link_hash_defined
4694 && h->root.type != bfd_link_hash_defweak)
4695 || htab->srelbss == NULL)
4696 abort ();
252b5132
RH		 4697
4698 rel.r_offset = (h->root.u.def.value
4699 + h->root.u.def.section->output_section->vma
4700 + h->root.u.def.section->output_offset);
4701 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 4702 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 4703 }
4704
b34976b6 4705 return TRUE;
252b5132
RH		 4706}
4707
c25bc9fc
L		 4708/* Finish up local dynamic symbol handling. We set the contents of
4709 various dynamic sections here. */
4710
4711static bfd_boolean
4712elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4713{
4714 struct elf_link_hash_entry *h
4715 = (struct elf_link_hash_entry *) *slot;
4716 struct bfd_link_info *info
23209a78 4717 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4718
4719 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4720 h, NULL);
4721}
4722
38701953
AM		 4723/* Used to decide how to sort relocs in an optimal manner for the
4724 dynamic linker, before writing them out. */
4725
4726static enum elf_reloc_type_class
7e612e98
AM		 4727elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4728 const asection *rel_sec ATTRIBUTE_UNUSED,
4729 const Elf_Internal_Rela *rela)
38701953 4730{
55fd94b0 4731 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4732 {
4733 case R_386_RELATIVE:
4734 return reloc_class_relative;
4735 case R_386_JUMP_SLOT:
4736 return reloc_class_plt;
4737 case R_386_COPY:
4738 return reloc_class_copy;
4739 default:
4740 return reloc_class_normal;
4741 }
4742}
4743
252b5132
RH		 4744/* Finish up the dynamic sections. */
4745
b34976b6 4746static bfd_boolean
55fd94b0
AM		 4747elf_i386_finish_dynamic_sections (bfd *output_bfd,
4748 struct bfd_link_info *info)
252b5132 4749{
6725bdbf 4750 struct elf_i386_link_hash_table *htab;
252b5132 4751 bfd *dynobj;
252b5132 4752 asection *sdyn;
25e762b9 4753 const struct elf_i386_backend_data *abed;
252b5132 4754
6725bdbf 4755 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4756 if (htab == NULL)
4757 return FALSE;
4758
ebe50bae 4759 dynobj = htab->elf.dynobj;
3d4d4302 4760 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4761 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4762
ebe50bae 4763 if (htab->elf.dynamic_sections_created)
252b5132 4764 {
252b5132
RH		 4765 Elf32_External_Dyn *dyncon, *dynconend;
4766
6de2ae4a 4767 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4768 abort ();
252b5132
RH		 4769
4770 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4771 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4772 for (; dyncon < dynconend; dyncon++)
4773 {
4774 Elf_Internal_Dyn dyn;
51b64d56 4775 asection *s;
252b5132
RH		 4776
4777 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4778
4779 switch (dyn.d_tag)
4780 {
4781 default:
25e762b9
RM		 4782 if (abed->is_vxworks
4783 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 4784 break;
0ac8d2ca 4785 continue;
252b5132
RH		 4786
4787 case DT_PLTGOT:
6de2ae4a 4788 s = htab->elf.sgotplt;
8c37241b 4789 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 4790 break;
4791
252b5132 4792 case DT_JMPREL:
6de2ae4a 4793 s = htab->elf.srelplt;
6348e046 4794 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 4795 break;
4796
4797 case DT_PLTRELSZ:
6de2ae4a 4798 s = htab->elf.srelplt;
eea6121a 4799 dyn.d_un.d_val = s->size;
252b5132
RH		 4800 break;
4801
4802 case DT_RELSZ:
4803 /* My reading of the SVR4 ABI indicates that the
4804 procedure linkage table relocs (DT_JMPREL) should be
4805 included in the overall relocs (DT_REL). This is
4806 what Solaris does. However, UnixWare can not handle
4807 that case. Therefore, we override the DT_RELSZ entry
6348e046 4808 here to make it not include the JMPREL relocs. */
6de2ae4a 4809 s = htab->elf.srelplt;
6348e046
AM		 4810 if (s == NULL)
4811 continue;
eea6121a 4812 dyn.d_un.d_val -= s->size;
6348e046
AM		 4813 break;
4814
4815 case DT_REL:
4816 /* We may not be using the standard ELF linker script.
4817 If .rel.plt is the first .rel section, we adjust
4818 DT_REL to not include it. */
6de2ae4a 4819 s = htab->elf.srelplt;
6348e046
AM		 4820 if (s == NULL)
4821 continue;
4822 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4823 continue;
eea6121a 4824 dyn.d_un.d_ptr += s->size;
252b5132
RH		 4825 break;
4826 }
0ac8d2ca
AM		 4827
4828 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 4829 }
4830
4831 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 4832 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 4833 {
4834 if (info->shared)
eac338cf 4835 {
25e762b9
RM		 4836 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
4837 abed->plt->plt0_entry_size);
4838 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4839 abed->plt0_pad_byte,
4840 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 4841 }
252b5132
RH		 4842 else
4843 {
25e762b9
RM		 4844 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
4845 abed->plt->plt0_entry_size);
4846 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4847 abed->plt0_pad_byte,
4848 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 4849 bfd_put_32 (output_bfd,
6de2ae4a
L		 4850 (htab->elf.sgotplt->output_section->vma
4851 + htab->elf.sgotplt->output_offset
6725bdbf 4852 + 4),
25e762b9
RM		 4853 htab->elf.splt->contents
4854 + abed->plt->plt0_got1_offset);
252b5132 4855 bfd_put_32 (output_bfd,
6de2ae4a
L		 4856 (htab->elf.sgotplt->output_section->vma
4857 + htab->elf.sgotplt->output_offset
6725bdbf 4858 + 8),
25e762b9
RM		 4859 htab->elf.splt->contents
4860 + abed->plt->plt0_got2_offset);
eac338cf 4861
25e762b9 4862 if (abed->is_vxworks)
eac338cf
PB		 4863 {
4864 Elf_Internal_Rela rel;
7325306f 4865
eac338cf
PB		 4866 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4867 On IA32 we use REL relocations so the addend goes in
4868 the PLT directly. */
6de2ae4a
L		 4869 rel.r_offset = (htab->elf.splt->output_section->vma
4870 + htab->elf.splt->output_offset
25e762b9 4871 + abed->plt->plt0_got1_offset);
7325306f 4872 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4873 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4874 htab->srelplt2->contents);
4875 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 4876 rel.r_offset = (htab->elf.splt->output_section->vma
4877 + htab->elf.splt->output_offset
25e762b9 4878 + abed->plt->plt0_got2_offset);
7325306f 4879 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4880 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4881 htab->srelplt2->contents +
4882 sizeof (Elf32_External_Rel));
4883 }
252b5132
RH		 4884 }
4885
4886 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4887 really seem like the right value. */
6de2ae4a 4888 elf_section_data (htab->elf.splt->output_section)
6725bdbf 4889 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 4890
4891 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 4892 if (abed->is_vxworks && !info->shared)
eac338cf 4893 {
25e762b9
RM		 4894 int num_plts = (htab->elf.splt->size
4895 / abed->plt->plt_entry_size) - 1;
4c9b0de6 4896 unsigned char *p;
eac338cf
PB		 4897
4898 p = htab->srelplt2->contents;
4899 if (info->shared)
4900 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4901 else
4902 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4903
4904 for (; num_plts; num_plts--)
4905 {
4906 Elf_Internal_Rela rel;
4907 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4908 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4909 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4910 p += sizeof (Elf32_External_Rel);
4911
4912 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4913 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4914 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4915 p += sizeof (Elf32_External_Rel);
4916 }
4917 }
252b5132
RH		 4918 }
4919 }
4920
6de2ae4a 4921 if (htab->elf.sgotplt)
252b5132 4922 {
56d4289c
L		 4923 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4924 {
4925 (*_bfd_error_handler)
4926 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4927 return FALSE;
4928 }
4929
12d0ee4a 4930 /* Fill in the first three entries in the global offset table. */
6de2ae4a 4931 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 4932 {
4933 bfd_put_32 (output_bfd,
55fd94b0 4934 (sdyn == NULL ? 0
12d0ee4a 4935 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 4936 htab->elf.sgotplt->contents);
4937 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4938 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 4939 }
252b5132 4940
6de2ae4a 4941 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 4942 }
8c37241b 4943
e41b3a13 4944 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 4945 if (htab->plt_eh_frame != NULL
4946 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 4947 {
4948 if (htab->elf.splt != NULL
4949 && htab->elf.splt->size != 0
4950 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
4951 && htab->elf.splt->output_section != NULL
4952 && htab->plt_eh_frame->output_section != NULL)
4953 {
4954 bfd_vma plt_start = htab->elf.splt->output_section->vma;
4955 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
4956 + htab->plt_eh_frame->output_offset
4957 + PLT_FDE_START_OFFSET;
4958 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4959 htab->plt_eh_frame->contents
4960 + PLT_FDE_START_OFFSET);
4961 }
4962 if (htab->plt_eh_frame->sec_info_type
dbaa2011 4963 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 4964 {
4965 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4966 htab->plt_eh_frame,
4967 htab->plt_eh_frame->contents))
4968 return FALSE;
4969 }
4970 }
4971
6de2ae4a
L		 4972 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4973 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 4974
c25bc9fc
L		 4975 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4976 htab_traverse (htab->loc_hash_table,
4977 elf_i386_finish_local_dynamic_symbol,
4978 info);
4979
b34976b6 4980 return TRUE;
252b5132
RH		 4981}
4982
4c45e5c9
JJ		 4983/* Return address for Ith PLT stub in section PLT, for relocation REL
4984 or (bfd_vma) -1 if it should not be included. */
4985
4986static bfd_vma
4987elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
4988 const arelent *rel ATTRIBUTE_UNUSED)
4989{
25e762b9 4990 return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
4c45e5c9
JJ		 4991}
4992
fdc90cb4
JJ		 4993/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
4994
4995static bfd_boolean
4996elf_i386_hash_symbol (struct elf_link_hash_entry *h)
4997{
4998 if (h->plt.offset != (bfd_vma) -1
4999 && !h->def_regular
5000 && !h->pointer_equality_needed)
5001 return FALSE;
5002
5003 return _bfd_elf_hash_symbol (h);
5004}
4c45e5c9 5005
d8045f23
NC		 5006/* Hook called by the linker routine which adds symbols from an object
5007 file. */
5008
5009static bfd_boolean
c16153ae 5010elf_i386_add_symbol_hook (bfd * abfd,
d8045f23
NC		 5011 struct bfd_link_info * info ATTRIBUTE_UNUSED,
5012 Elf_Internal_Sym * sym,
5013 const char ** namep ATTRIBUTE_UNUSED,
5014 flagword * flagsp ATTRIBUTE_UNUSED,
5015 asection ** secp ATTRIBUTE_UNUSED,
5016 bfd_vma * valp ATTRIBUTE_UNUSED)
5017{
c16153ae 5018 if ((abfd->flags & DYNAMIC) == 0
f64b2e8d
NC		 5019 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5020 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
5021 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC		 5022
5023 return TRUE;
5024}
5025
252b5132
RH		 5026#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
5027#define TARGET_LITTLE_NAME "elf32-i386"
5028#define ELF_ARCH bfd_arch_i386
ae95ffa6 5029#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5030#define ELF_MACHINE_CODE EM_386
5031#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5032
5033#define elf_backend_can_gc_sections 1
51b64d56 5034#define elf_backend_can_refcount 1
252b5132
RH		 5035#define elf_backend_want_got_plt 1
5036#define elf_backend_plt_readonly 1
5037#define elf_backend_want_plt_sym 0
5038#define elf_backend_got_header_size 12
e41b3a13 5039#define elf_backend_plt_alignment 4
252b5132 5040
8c29f035
AM		 5041/* Support RELA for objdump of prelink objects. */
5042#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5043#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5044
13ae64f3 5045#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5046
dd5724d5
AM		 5047#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5048#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
c25bc9fc 5049#define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
dd5724d5 5050#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5051#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM		 5052
5053#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5054#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5055#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5056#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5057#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5058#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5059#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5060#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5061#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5062#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5063#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5064#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5065#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5066#define elf_backend_relocate_section elf_i386_relocate_section
5067#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5068#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5069#define elf_backend_omit_section_dynsym \
5070 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 5071#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 5072#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23 5073#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
dd5724d5 5074
252b5132 5075#include "elf32-target.h"
2bc3c89a
AM		 5076
5077/* FreeBSD support. */
5078
5079#undef TARGET_LITTLE_SYM
5080#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
5081#undef TARGET_LITTLE_NAME
5082#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5083#undef ELF_OSABI
5084#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5085
5086/* The kernel recognizes executables as valid only if they carry a
5087 "FreeBSD" label in the ELF header. So we put this label on all
5088 executables and (for simplicity) also all other object files. */
5089
2bc3c89a 5090static void
d8045f23 5091elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5092{
78245035 5093 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 5094
2bc3c89a
AM		 5095#ifdef OLD_FREEBSD_ABI_LABEL
5096 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5097 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 5098#endif
2bc3c89a
AM		 5099}
5100
5101#undef elf_backend_post_process_headers
d8045f23 5102#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5103#undef elf32_bed
5104#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5105
d8045f23
NC		 5106#undef elf_backend_add_symbol_hook
5107
2bc3c89a 5108#include "elf32-target.h"
eac338cf 5109
a6cc6b3b
RO		 5110/* Solaris 2. */
5111
5112#undef TARGET_LITTLE_SYM
5113#define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec
5114#undef TARGET_LITTLE_NAME
5115#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5116
5117/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5118 objects won't be recognized. */
5119#undef ELF_OSABI
5120
5121#undef elf32_bed
5122#define elf32_bed elf32_i386_sol2_bed
5123
7dc98aea
RO		 5124/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5125 boundary. */
5126#undef elf_backend_static_tls_alignment
5127#define elf_backend_static_tls_alignment 8
5128
a6cc6b3b
RO		 5129/* The Solaris 2 ABI requires a plt symbol on all platforms.
5130
5131 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5132 File, p.63. */
5133#undef elf_backend_want_plt_sym
5134#define elf_backend_want_plt_sym 1
5135
5136#include "elf32-target.h"
5137
a27e4371
RM		 5138/* Native Client support. */
5139
5140#undef TARGET_LITTLE_SYM
5141#define TARGET_LITTLE_SYM bfd_elf32_i386_nacl_vec
5142#undef TARGET_LITTLE_NAME
5143#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5144#undef elf32_bed
5145#define elf32_bed elf32_i386_nacl_bed
5146
5147#undef ELF_MAXPAGESIZE
5148#define ELF_MAXPAGESIZE 0x10000
5149
5150/* Restore defaults. */
5151#undef ELF_OSABI
5152#undef elf_backend_want_plt_sym
5153#define elf_backend_want_plt_sym 0
5154#undef elf_backend_post_process_headers
a27e4371
RM		 5155#undef elf_backend_static_tls_alignment
5156
5157/* NaCl uses substantially different PLT entries for the same effects. */
5158
5159#undef elf_backend_plt_alignment
5160#define elf_backend_plt_alignment 5
5161#define NACL_PLT_ENTRY_SIZE 64
5162#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5163
5164static const bfd_byte elf_i386_nacl_plt0_entry[] =
5165 {
5166 0xff, 0x35, /* pushl contents of address */
5167 0, 0, 0, 0, /* replaced with address of .got + 4. */
5168 0x8b, 0x0d, /* movl contents of address, %ecx */
5169 0, 0, 0, 0, /* replaced with address of .got + 8. */
5170 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5171 0xff, 0xe1 /* jmp *%ecx */
5172 };
5173
5174static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5175 {
5176 0x8b, 0x0d, /* movl contents of address, %ecx */
5177 0, 0, 0, 0, /* replaced with GOT slot address. */
5178 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5179 0xff, 0xe1, /* jmp *%ecx */
5180
5181 /* Pad to the next 32-byte boundary with nop instructions. */
5182 0x90,
5183 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5184 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5185
5186 /* Lazy GOT entries point here (32-byte aligned). */
5187 0x68, /* pushl immediate */
5188 0, 0, 0, 0, /* replaced with reloc offset. */
5189 0xe9, /* jmp relative */
5190 0, 0, 0, 0, /* replaced with offset to .plt. */
5191
5192 /* Pad to the next 32-byte boundary with nop instructions. */
5193 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5194 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5195 0x90, 0x90
5196 };
5197
5198static const bfd_byte
5199elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5200 {
5201 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5202 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5203 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5204 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5205
5206 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5207 so pad to that size with nop instructions. */
5208 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5209 };
5210
5211static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5212 {
5213 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5214 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5215 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5216 0xff, 0xe1, /* jmp *%ecx */
5217
5218 /* Pad to the next 32-byte boundary with nop instructions. */
5219 0x90,
5220 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5221 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5222
5223 /* Lazy GOT entries point here (32-byte aligned). */
5224 0x68, /* pushl immediate */
5225 0, 0, 0, 0, /* replaced with offset into relocation table. */
5226 0xe9, /* jmp relative */
5227 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5228
5229 /* Pad to the next 32-byte boundary with nop instructions. */
5230 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5231 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5232 0x90, 0x90
5233 };
5234
5235static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5236 {
5237#if (PLT_CIE_LENGTH != 20 \
5238 || PLT_FDE_LENGTH != 36 \
5239 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5240 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5241# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5242#endif
5243 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5244 0, 0, 0, 0, /* CIE ID */
5245 1, /* CIE version */
5246 'z', 'R', 0, /* Augmentation string */
5247 1, /* Code alignment factor */
5248 0x7c, /* Data alignment factor: -4 */
5249 8, /* Return address column */
5250 1, /* Augmentation size */
5251 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5252 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5253 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5254 DW_CFA_nop, DW_CFA_nop,
5255
5256 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5257 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5258 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5259 0, 0, 0, 0, /* .plt size goes here */
5260 0, /* Augmentation size */
5261 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5262 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5263 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5264 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5265 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5266 13, /* Block length */
5267 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5268 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5269 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5270 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5271 DW_CFA_nop, DW_CFA_nop
5272 };
5273
5274static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5275 {
5276 elf_i386_nacl_plt0_entry, /* plt0_entry */
5277 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5278 2, /* plt0_got1_offset */
5279 8, /* plt0_got2_offset */
5280 elf_i386_nacl_plt_entry, /* plt_entry */
5281 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5282 2, /* plt_got_offset */
5283 33, /* plt_reloc_offset */
5284 38, /* plt_plt_offset */
5285 32, /* plt_lazy_offset */
5286 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5287 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5288 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5289 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5290 };
5291
5292static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5293 {
5294 &elf_i386_nacl_plt, /* plt */
5295 0x90, /* plt0_pad_byte: nop insn */
5296 0, /* is_vxworks */
5297 };
5298
64b384e1
RM		 5299static bfd_boolean
5300elf32_i386_nacl_elf_object_p (bfd *abfd)
5301{
5302 /* Set the right machine number for a NaCl i386 ELF32 file. */
5303 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
5304 return TRUE;
5305}
5306
a27e4371
RM		 5307#undef elf_backend_arch_data
5308#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5309
64b384e1
RM		 5310#undef elf_backend_object_p
5311#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 5312#undef elf_backend_modify_segment_map
5313#define elf_backend_modify_segment_map nacl_modify_segment_map
5314#undef elf_backend_modify_program_headers
5315#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5316#undef elf_backend_final_write_processing
5317#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5318
a27e4371
RM		 5319#include "elf32-target.h"
5320
5a68afcf 5321/* Restore defaults. */
64b384e1 5322#undef elf_backend_object_p
5a68afcf
RM		 5323#undef elf_backend_modify_segment_map
5324#undef elf_backend_modify_program_headers
887badb3 5325#undef elf_backend_final_write_processing
5a68afcf 5326
eac338cf
PB		 5327/* VxWorks support. */
5328
5329#undef TARGET_LITTLE_SYM
5330#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
5331#undef TARGET_LITTLE_NAME
5332#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5333#undef ELF_OSABI
a27e4371
RM		 5334#undef elf_backend_plt_alignment
5335#define elf_backend_plt_alignment 4
eac338cf 5336
23209a78
RM		 5337static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5338 {
25e762b9 5339 &elf_i386_plt, /* plt */
23209a78
RM		 5340 0x90, /* plt0_pad_byte */
5341 1, /* is_vxworks */
5342 };
eac338cf 5343
23209a78
RM		 5344#undef elf_backend_arch_data
5345#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5346
13285a1b 5347#undef elf_backend_relocs_compatible
eac338cf
PB		 5348#undef elf_backend_add_symbol_hook
5349#define elf_backend_add_symbol_hook \
5350 elf_vxworks_add_symbol_hook
5351#undef elf_backend_link_output_symbol_hook
5352#define elf_backend_link_output_symbol_hook \
9c72ff84 5353 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5354#undef elf_backend_emit_relocs
5355#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5356#undef elf_backend_final_write_processing
5357#define elf_backend_final_write_processing \
5358 elf_vxworks_final_write_processing
7dc98aea 5359#undef elf_backend_static_tls_alignment
eac338cf
PB		 5360
5361/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5362 define it. */
5363#undef elf_backend_want_plt_sym
5364#define elf_backend_want_plt_sym 1
5365
5366#undef elf32_bed
5367#define elf32_bed elf32_i386_vxworks_bed
5368
5369#include "elf32-target.h"
GDB Binutils - Deliverables
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