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Fix a couple of ChangeLog entries.
[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,
9f973f28
L		 3 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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"
eac338cf 28#include "elf-vxworks.h"
142411ca 29#include "bfd_stdint.h"
c25bc9fc
L		 30#include "objalloc.h"
31#include "hashtab.h"
e41b3a13 32#include "dwarf2.h"
252b5132 33
55fd94b0
AM		 34/* 386 uses REL relocations instead of RELA. */
35#define USE_REL 1
252b5132
RH		 36
37#include "elf/i386.h"
38
39static reloc_howto_type elf_howto_table[]=
40{
b34976b6 41 HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
1b452ec6 42 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 43 TRUE, 0x00000000, 0x00000000, FALSE),
44 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 45 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 46 TRUE, 0xffffffff, 0xffffffff, FALSE),
47 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 48 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 49 TRUE, 0xffffffff, 0xffffffff, TRUE),
50 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 51 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 52 TRUE, 0xffffffff, 0xffffffff, FALSE),
53 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 54 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 55 TRUE, 0xffffffff, 0xffffffff, TRUE),
56 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 57 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 58 TRUE, 0xffffffff, 0xffffffff, FALSE),
59 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 60 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 61 TRUE, 0xffffffff, 0xffffffff, FALSE),
62 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 63 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 64 TRUE, 0xffffffff, 0xffffffff, FALSE),
65 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 66 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 67 TRUE, 0xffffffff, 0xffffffff, FALSE),
68 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 69 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 70 TRUE, 0xffffffff, 0xffffffff, FALSE),
71 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 72 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 73 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 74
dc47f327
AM		 75 /* We have a gap in the reloc numbers here.
76 R_386_standard counts the number up to this point, and
77 R_386_ext_offset is the value to subtract from a reloc type of
78 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 79#define R_386_standard (R_386_GOTPC + 1)
80#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 81
37e55690 82 /* These relocs are a GNU extension. */
b34976b6 83 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 84 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 85 TRUE, 0xffffffff, 0xffffffff, FALSE),
86 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 87 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 88 TRUE, 0xffffffff, 0xffffffff, FALSE),
89 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 90 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 91 TRUE, 0xffffffff, 0xffffffff, FALSE),
92 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 93 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 94 TRUE, 0xffffffff, 0xffffffff, FALSE),
95 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 96 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 97 TRUE, 0xffffffff, 0xffffffff, FALSE),
98 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 99 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 100 TRUE, 0xffffffff, 0xffffffff, FALSE),
101 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 102 bfd_elf_generic_reloc, "R_386_16",
b34976b6 103 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 104 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 105 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 106 TRUE, 0xffff, 0xffff, TRUE),
107 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 108 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 109 TRUE, 0xff, 0xff, FALSE),
110 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 111 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 112 TRUE, 0xff, 0xff, TRUE),
dc47f327 113
55fd94b0
AM		 114#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
115#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 116 /* These are common with Solaris TLS implementation. */
b34976b6 117 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 118 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 119 TRUE, 0xffffffff, 0xffffffff, FALSE),
120 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 121 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 122 TRUE, 0xffffffff, 0xffffffff, FALSE),
123 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 124 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 125 TRUE, 0xffffffff, 0xffffffff, FALSE),
126 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 127 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 128 TRUE, 0xffffffff, 0xffffffff, FALSE),
129 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 130 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 131 TRUE, 0xffffffff, 0xffffffff, FALSE),
132 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 133 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 134 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 135 EMPTY_HOWTO (38),
136 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
137 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
138 TRUE, 0xffffffff, 0xffffffff, FALSE),
139 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
140 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
141 FALSE, 0, 0, FALSE),
142 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
143 bfd_elf_generic_reloc, "R_386_TLS_DESC",
144 TRUE, 0xffffffff, 0xffffffff, FALSE),
cbe950e9
L		 145 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_386_IRELATIVE",
147 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 148
149 /* Another gap. */
cbe950e9
L		 150#define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset)
151#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative)
252b5132
RH		 152
153/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 154 HOWTO (R_386_GNU_VTINHERIT, /* type */
155 0, /* rightshift */
156 2, /* size (0 = byte, 1 = short, 2 = long) */
157 0, /* bitsize */
b34976b6 158 FALSE, /* pc_relative */
252b5132
RH		 159 0, /* bitpos */
160 complain_overflow_dont, /* complain_on_overflow */
161 NULL, /* special_function */
162 "R_386_GNU_VTINHERIT", /* name */
b34976b6 163 FALSE, /* partial_inplace */
252b5132
RH		 164 0, /* src_mask */
165 0, /* dst_mask */
b34976b6 166 FALSE), /* pcrel_offset */
252b5132
RH		 167
168/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 169 HOWTO (R_386_GNU_VTENTRY, /* type */
170 0, /* rightshift */
171 2, /* size (0 = byte, 1 = short, 2 = long) */
172 0, /* bitsize */
b34976b6 173 FALSE, /* pc_relative */
252b5132
RH		 174 0, /* bitpos */
175 complain_overflow_dont, /* complain_on_overflow */
176 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
177 "R_386_GNU_VTENTRY", /* name */
b34976b6 178 FALSE, /* partial_inplace */
252b5132
RH		 179 0, /* src_mask */
180 0, /* dst_mask */
b34976b6 181 FALSE) /* pcrel_offset */
dc47f327 182
55fd94b0 183#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 184
185};
186
252b5132 187#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 188#define TRACE(str) \
189 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 190#else
191#define TRACE(str)
192#endif
193
194static reloc_howto_type *
55fd94b0
AM		 195elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
196 bfd_reloc_code_real_type code)
252b5132
RH		 197{
198 switch (code)
199 {
200 case BFD_RELOC_NONE:
201 TRACE ("BFD_RELOC_NONE");
55fd94b0 202 return &elf_howto_table[R_386_NONE];
252b5132
RH		 203
204 case BFD_RELOC_32:
205 TRACE ("BFD_RELOC_32");
55fd94b0 206 return &elf_howto_table[R_386_32];
252b5132
RH		 207
208 case BFD_RELOC_CTOR:
209 TRACE ("BFD_RELOC_CTOR");
55fd94b0 210 return &elf_howto_table[R_386_32];
252b5132
RH		 211
212 case BFD_RELOC_32_PCREL:
213 TRACE ("BFD_RELOC_PC32");
55fd94b0 214 return &elf_howto_table[R_386_PC32];
252b5132
RH		 215
216 case BFD_RELOC_386_GOT32:
217 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 218 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 219
220 case BFD_RELOC_386_PLT32:
221 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 222 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 223
224 case BFD_RELOC_386_COPY:
225 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 226 return &elf_howto_table[R_386_COPY];
252b5132
RH		 227
228 case BFD_RELOC_386_GLOB_DAT:
229 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 230 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 231
232 case BFD_RELOC_386_JUMP_SLOT:
233 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 234 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 235
236 case BFD_RELOC_386_RELATIVE:
237 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 238 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 239
240 case BFD_RELOC_386_GOTOFF:
241 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 242 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 243
244 case BFD_RELOC_386_GOTPC:
245 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 246 return &elf_howto_table[R_386_GOTPC];
252b5132 247
37e55690
JJ		 248 /* These relocs are a GNU extension. */
249 case BFD_RELOC_386_TLS_TPOFF:
250 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 251 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 252
253 case BFD_RELOC_386_TLS_IE:
254 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 255 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 256
257 case BFD_RELOC_386_TLS_GOTIE:
258 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 259 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 260
13ae64f3
JJ		 261 case BFD_RELOC_386_TLS_LE:
262 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 263 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 264
265 case BFD_RELOC_386_TLS_GD:
266 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 267 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 268
269 case BFD_RELOC_386_TLS_LDM:
270 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 271 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 272
252b5132
RH		 273 case BFD_RELOC_16:
274 TRACE ("BFD_RELOC_16");
55fd94b0 275 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 276
277 case BFD_RELOC_16_PCREL:
278 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 279 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 280
281 case BFD_RELOC_8:
282 TRACE ("BFD_RELOC_8");
55fd94b0 283 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 284
285 case BFD_RELOC_8_PCREL:
286 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 287 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 288
13ae64f3
JJ		 289 /* Common with Sun TLS implementation. */
290 case BFD_RELOC_386_TLS_LDO_32:
291 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 292 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 293
294 case BFD_RELOC_386_TLS_IE_32:
295 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 296 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 297
298 case BFD_RELOC_386_TLS_LE_32:
299 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 300 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 301
302 case BFD_RELOC_386_TLS_DTPMOD32:
303 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 304 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 305
306 case BFD_RELOC_386_TLS_DTPOFF32:
307 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 308 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 309
310 case BFD_RELOC_386_TLS_TPOFF32:
311 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 312 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 313
67a4f2b7
AO		 314 case BFD_RELOC_386_TLS_GOTDESC:
315 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
316 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
317
318 case BFD_RELOC_386_TLS_DESC_CALL:
319 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
320 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
321
322 case BFD_RELOC_386_TLS_DESC:
323 TRACE ("BFD_RELOC_386_TLS_DESC");
324 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
325
cbe950e9
L		 326 case BFD_RELOC_386_IRELATIVE:
327 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 328 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 329
252b5132
RH		 330 case BFD_RELOC_VTABLE_INHERIT:
331 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 332 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 333
334 case BFD_RELOC_VTABLE_ENTRY:
335 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 336 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 337
338 default:
339 break;
340 }
341
342 TRACE ("Unknown");
343 return 0;
344}
345
157090f7
AM		 346static reloc_howto_type *
347elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
348 const char *r_name)
349{
350 unsigned int i;
351
352 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
353 if (elf_howto_table[i].name != NULL
354 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
355 return &elf_howto_table[i];
356
357 return NULL;
358}
359
142411ca
L		 360static reloc_howto_type *
361elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 362{
dc47f327
AM		 363 unsigned int indx;
364
365 if ((indx = r_type) >= R_386_standard
366 && ((indx = r_type - R_386_ext_offset) - R_386_standard
367 >= R_386_ext - R_386_standard)
13ae64f3 368 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9
L		 369 >= R_386_irelative - R_386_ext)
370 && ((indx = r_type - R_386_vt_offset) - R_386_irelative
371 >= R_386_vt - R_386_irelative))
252b5132 372 {
d003868e
AM		 373 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
374 abfd, (int) r_type);
55fd94b0 375 indx = R_386_NONE;
252b5132 376 }
142411ca
L		 377 BFD_ASSERT (elf_howto_table [indx].type == r_type);
378 return &elf_howto_table[indx];
379}
380
381static void
382elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
383 arelent *cache_ptr,
384 Elf_Internal_Rela *dst)
385{
386 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
387 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 388}
389
390/* Return whether a symbol name implies a local label. The UnixWare
391 2.1 cc generates temporary symbols that start with .X, so we
392 recognize them here. FIXME: do other SVR4 compilers also use .X?.
393 If so, we should move the .X recognition into
394 _bfd_elf_is_local_label_name. */
395
b34976b6 396static bfd_boolean
55fd94b0 397elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 398{
399 if (name[0] == '.' && name[1] == 'X')
b34976b6 400 return TRUE;
252b5132
RH		 401
402 return _bfd_elf_is_local_label_name (abfd, name);
403}
404\f
38701953 405/* Support for core dump NOTE sections. */
61adc1a4 406
b34976b6 407static bfd_boolean
55fd94b0 408elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 409{
410 int offset;
eea6121a 411 size_t size;
38701953 412
61adc1a4 413 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 414 {
61adc1a4
NC		 415 int pr_version = bfd_get_32 (abfd, note->descdata);
416
417 if (pr_version != 1)
418 return FALSE;
419
420 /* pr_cursig */
421 elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
422
423 /* pr_pid */
261b8d08 424 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 425
426 /* pr_reg */
427 offset = 28;
eea6121a 428 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 429 }
430 else
431 {
432 switch (note->descsz)
433 {
434 default:
435 return FALSE;
38701953 436
61adc1a4
NC		 437 case 144: /* Linux/i386 */
438 /* pr_cursig */
439 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 440
61adc1a4 441 /* pr_pid */
261b8d08 442 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 443
61adc1a4
NC		 444 /* pr_reg */
445 offset = 72;
eea6121a 446 size = 68;
38701953 447
61adc1a4
NC		 448 break;
449 }
38701953
AM		 450 }
451
452 /* Make a ".reg/999" section. */
453 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 454 size, note->descpos + offset);
38701953
AM		 455}
456
b34976b6 457static bfd_boolean
55fd94b0 458elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 459{
61adc1a4 460 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 461 {
61adc1a4
NC		 462 int pr_version = bfd_get_32 (abfd, note->descdata);
463
464 if (pr_version != 1)
b34976b6 465 return FALSE;
38701953 466
61adc1a4
NC		 467 elf_tdata (abfd)->core_program
468 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
469 elf_tdata (abfd)->core_command
470 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
471 }
472 else
473 {
474 switch (note->descsz)
475 {
476 default:
477 return FALSE;
478
479 case 124: /* Linux/i386 elf_prpsinfo. */
261b8d08
PA		 480 elf_tdata (abfd)->core_pid
481 = bfd_get_32 (abfd, note->descdata + 12);
61adc1a4
NC		 482 elf_tdata (abfd)->core_program
483 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
484 elf_tdata (abfd)->core_command
485 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
486 }
38701953
AM		 487 }
488
489 /* Note that for some reason, a spurious space is tacked
490 onto the end of the args in some (at least one anyway)
491 implementations, so strip it off if it exists. */
38701953
AM		 492 {
493 char *command = elf_tdata (abfd)->core_command;
494 int n = strlen (command);
495
496 if (0 < n && command[n - 1] == ' ')
497 command[n - 1] = '\0';
498 }
499
b34976b6 500 return TRUE;
38701953
AM		 501}
502\f
503/* Functions for the i386 ELF linker.
504
505 In order to gain some understanding of code in this file without
506 knowing all the intricate details of the linker, note the
507 following:
508
509 Functions named elf_i386_* are called by external routines, other
510 functions are only called locally. elf_i386_* functions appear
511 in this file more or less in the order in which they are called
512 from external routines. eg. elf_i386_check_relocs is called
513 early in the link process, elf_i386_finish_dynamic_sections is
514 one of the last functions. */
515
252b5132
RH		 516
517/* The name of the dynamic interpreter. This is put in the .interp
518 section. */
519
520#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
521
a23b6845
AM		 522/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
523 copying dynamic variables from a shared lib into an app's dynbss
524 section, and instead use a dynamic relocation to point into the
525 shared lib. */
526#define ELIMINATE_COPY_RELOCS 1
527
252b5132
RH		 528/* The size in bytes of an entry in the procedure linkage table. */
529
530#define PLT_ENTRY_SIZE 16
531
532/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 533 this. See the SVR4 ABI i386 supplement to see how this works.
534 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 535
eac338cf 536static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 537{
538 0xff, 0x35, /* pushl contents of address */
539 0, 0, 0, 0, /* replaced with address of .got + 4. */
540 0xff, 0x25, /* jmp indirect */
eac338cf 541 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 542};
543
544/* Subsequent entries in an absolute procedure linkage table look like
545 this. */
546
547static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
548{
549 0xff, 0x25, /* jmp indirect */
550 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
551 0x68, /* pushl immediate */
552 0, 0, 0, 0, /* replaced with offset into relocation table. */
553 0xe9, /* jmp relative */
554 0, 0, 0, 0 /* replaced with offset to start of .plt. */
555};
556
eac338cf
PB		 557/* The first entry in a PIC procedure linkage table look like this.
558 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 559
eac338cf 560static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 561{
562 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 563 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 564};
565
566/* Subsequent entries in a PIC procedure linkage table look like this. */
567
568static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
569{
570 0xff, 0xa3, /* jmp *offset(%ebx) */
571 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
572 0x68, /* pushl immediate */
573 0, 0, 0, 0, /* replaced with offset into relocation table. */
574 0xe9, /* jmp relative */
575 0, 0, 0, 0 /* replaced with offset to start of .plt. */
576};
577
e41b3a13
JJ		 578/* .eh_frame covering the .plt section. */
579
580static const bfd_byte elf_i386_eh_frame_plt[] =
581{
582#define PLT_CIE_LENGTH 20
583#define PLT_FDE_LENGTH 36
584#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
585#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
586 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
587 0, 0, 0, 0, /* CIE ID */
588 1, /* CIE version */
589 'z', 'R', 0, /* Augmentation string */
590 1, /* Code alignment factor */
591 0x7c, /* Data alignment factor */
592 8, /* Return address column */
593 1, /* Augmentation size */
594 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
595 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
596 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
597 DW_CFA_nop, DW_CFA_nop,
598
599 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
600 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
601 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
602 0, 0, 0, 0, /* .plt size goes here */
603 0, /* Augmentation size */
604 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
605 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
606 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
607 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
608 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
609 11, /* Block length */
610 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
611 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
612 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 613 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ		 614 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
615};
616
25e762b9
RM		 617struct elf_i386_plt_layout
618{
619 /* The first entry in an absolute procedure linkage table looks like this. */
620 const bfd_byte *plt0_entry;
621 unsigned int plt0_entry_size;
622
623 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
624 unsigned int plt0_got1_offset;
625 unsigned int plt0_got2_offset;
626
627 /* Later entries in an absolute procedure linkage table look like this. */
628 const bfd_byte *plt_entry;
629 unsigned int plt_entry_size;
630
631 /* Offsets into plt_entry that are to be replaced with... */
632 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
633 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
634 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
635
636 /* Offset into plt_entry where the initial value of the GOT entry points. */
637 unsigned int plt_lazy_offset;
638
639 /* The first entry in a PIC procedure linkage table looks like this. */
640 const bfd_byte *pic_plt0_entry;
641
642 /* Subsequent entries in a PIC procedure linkage table look like this. */
643 const bfd_byte *pic_plt_entry;
644
645 /* .eh_frame covering the .plt section. */
646 const bfd_byte *eh_frame_plt;
647 unsigned int eh_frame_plt_size;
648};
649
650#define GET_PLT_ENTRY_SIZE(abfd) \
651 get_elf_i386_backend_data (abfd)->plt->plt_entry_size
652
653/* These are the standard parameters. */
654static const struct elf_i386_plt_layout elf_i386_plt =
655 {
656 elf_i386_plt0_entry, /* plt0_entry */
657 sizeof (elf_i386_plt0_entry), /* plt0_entry_size */
658 2, /* plt0_got1_offset */
659 8, /* plt0_got2_offset */
660 elf_i386_plt_entry, /* plt_entry */
661 PLT_ENTRY_SIZE, /* plt_entry_size */
662 2, /* plt_got_offset */
663 7, /* plt_reloc_offset */
664 12, /* plt_plt_offset */
665 6, /* plt_lazy_offset */
666 elf_i386_pic_plt0_entry, /* pic_plt0_entry */
667 elf_i386_pic_plt_entry, /* pic_plt_entry */
668 elf_i386_eh_frame_plt, /* eh_frame_plt */
669 sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */
670 };
671\f
672
eac338cf
PB		 673/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
674 for the PLTResolve stub and then for each PLT entry. */
675#define PLTRESOLVE_RELOCS_SHLIB 0
676#define PLTRESOLVE_RELOCS 2
677#define PLT_NON_JUMP_SLOT_RELOCS 2
678
23209a78
RM		 679/* Architecture-specific backend data for i386. */
680
681struct elf_i386_backend_data
682{
25e762b9
RM		 683 /* Parameters describing PLT generation. */
684 const struct elf_i386_plt_layout *plt;
685
23209a78
RM		 686 /* Value used to fill the unused bytes of the first PLT entry. */
687 bfd_byte plt0_pad_byte;
688
689 /* True if the target system is VxWorks. */
690 int is_vxworks;
691};
692
693#define get_elf_i386_backend_data(abfd) \
694 ((const struct elf_i386_backend_data *) \
695 get_elf_backend_data (abfd)->arch_data)
696
697/* These are the standard parameters. */
698static const struct elf_i386_backend_data elf_i386_arch_bed =
699 {
25e762b9 700 &elf_i386_plt, /* plt */
23209a78
RM		 701 0, /* plt0_pad_byte */
702 0, /* is_vxworks */
703 };
704
705#define elf_backend_arch_data &elf_i386_arch_bed
706
252b5132
RH		 707/* i386 ELF linker hash entry. */
708
709struct elf_i386_link_hash_entry
710{
ebe50bae 711 struct elf_link_hash_entry elf;
252b5132 712
0c715baa 713 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 714 struct elf_dyn_relocs *dyn_relocs;
13ae64f3 715
37e55690
JJ		 716#define GOT_UNKNOWN 0
717#define GOT_NORMAL 1
718#define GOT_TLS_GD 2
719#define GOT_TLS_IE 4
720#define GOT_TLS_IE_POS 5
721#define GOT_TLS_IE_NEG 6
722#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO		 723#define GOT_TLS_GDESC 8
724#define GOT_TLS_GD_BOTH_P(type) \
725 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
726#define GOT_TLS_GD_P(type) \
727 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
728#define GOT_TLS_GDESC_P(type) \
729 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
730#define GOT_TLS_GD_ANY_P(type) \
731 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 732 unsigned char tls_type;
67a4f2b7
AO		 733
734 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
735 starting at the end of the jump table. */
736 bfd_vma tlsdesc_got;
13ae64f3
JJ		 737};
738
739#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
740
741struct elf_i386_obj_tdata
742{
743 struct elf_obj_tdata root;
744
745 /* tls_type for each local got entry. */
746 char *local_got_tls_type;
67a4f2b7
AO		 747
748 /* GOTPLT entries for TLS descriptors. */
749 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 750};
751
13ae64f3
JJ		 752#define elf_i386_tdata(abfd) \
753 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
754
755#define elf_i386_local_got_tls_type(abfd) \
756 (elf_i386_tdata (abfd)->local_got_tls_type)
757
67a4f2b7
AO		 758#define elf_i386_local_tlsdesc_gotent(abfd) \
759 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
760
0ffa91dd
NC		 761#define is_i386_elf(bfd) \
762 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
763 && elf_tdata (bfd) != NULL \
4dfe6ac6 764 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 765
b34976b6 766static bfd_boolean
55fd94b0 767elf_i386_mkobject (bfd *abfd)
13ae64f3 768{
0ffa91dd 769 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 770 I386_ELF_DATA);
13ae64f3 771}
cedb70c5 772
252b5132
RH		 773/* i386 ELF linker hash table. */
774
775struct elf_i386_link_hash_table
776{
ebe50bae 777 struct elf_link_hash_table elf;
252b5132 778
6725bdbf 779 /* Short-cuts to get to dynamic linker sections. */
6725bdbf
AM		 780 asection *sdynbss;
781 asection *srelbss;
e41b3a13 782 asection *plt_eh_frame;
9635fe29 783
4dfe6ac6
NC		 784 union
785 {
13ae64f3
JJ		 786 bfd_signed_vma refcount;
787 bfd_vma offset;
788 } tls_ldm_got;
789
67a4f2b7
AO		 790 /* The amount of space used by the reserved portion of the sgotplt
791 section, plus whatever space is used by the jump slots. */
792 bfd_vma sgotplt_jump_table_size;
793
87d72d41
AM		 794 /* Small local sym cache. */
795 struct sym_cache sym_cache;
9f03412a
AO		 796
797 /* _TLS_MODULE_BASE_ symbol. */
798 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 799
800 /* Used by local STT_GNU_IFUNC symbols. */
801 htab_t loc_hash_table;
4dfe6ac6
NC		 802 void * loc_hash_memory;
803
804 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
805 asection *srelplt2;
806
4dfe6ac6
NC		 807 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
808 bfd_vma next_tls_desc_index;
e1f98742
L		 809
810 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
811 bfd_vma next_jump_slot_index;
812
813 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
814 bfd_vma next_irelative_index;
6725bdbf 815};
252b5132
RH		 816
817/* Get the i386 ELF linker hash table from a link_info structure. */
818
819#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 820 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
821 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 822
67a4f2b7 823#define elf_i386_compute_jump_table_size(htab) \
5ae0bfb6 824 ((htab)->next_tls_desc_index * 4)
67a4f2b7 825
252b5132
RH		 826/* Create an entry in an i386 ELF linker hash table. */
827
828static struct bfd_hash_entry *
eb4ff4d6
L		 829elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
830 struct bfd_hash_table *table,
831 const char *string)
252b5132 832{
252b5132
RH		 833 /* Allocate the structure if it has not already been allocated by a
834 subclass. */
ebe50bae
AM		 835 if (entry == NULL)
836 {
a50b1753
NC		 837 entry = (struct bfd_hash_entry *)
838 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 839 if (entry == NULL)
840 return entry;
841 }
252b5132
RH		 842
843 /* Call the allocation method of the superclass. */
ebe50bae
AM		 844 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
845 if (entry != NULL)
252b5132 846 {
ebe50bae
AM		 847 struct elf_i386_link_hash_entry *eh;
848
849 eh = (struct elf_i386_link_hash_entry *) entry;
850 eh->dyn_relocs = NULL;
13ae64f3 851 eh->tls_type = GOT_UNKNOWN;
67a4f2b7 852 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 853 }
854
ebe50bae 855 return entry;
252b5132
RH		 856}
857
c25bc9fc
L		 858/* Compute a hash of a local hash entry. We use elf_link_hash_entry
859 for local symbol so that we can handle local STT_GNU_IFUNC symbols
860 as global symbol. We reuse indx and dynstr_index for local symbol
861 hash since they aren't used by global symbols in this backend. */
862
863static hashval_t
864elf_i386_local_htab_hash (const void *ptr)
865{
866 struct elf_link_hash_entry *h
867 = (struct elf_link_hash_entry *) ptr;
d2149d72 868 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 869}
870
871/* Compare local hash entries. */
872
873static int
874elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
875{
876 struct elf_link_hash_entry *h1
877 = (struct elf_link_hash_entry *) ptr1;
878 struct elf_link_hash_entry *h2
879 = (struct elf_link_hash_entry *) ptr2;
880
881 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
882}
883
884/* Find and/or create a hash entry for local symbol. */
885
886static struct elf_link_hash_entry *
887elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
888 bfd *abfd, const Elf_Internal_Rela *rel,
889 bfd_boolean create)
890{
891 struct elf_i386_link_hash_entry e, *ret;
892 asection *sec = abfd->sections;
d2149d72
L		 893 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
894 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 895 void **slot;
896
897 e.elf.indx = sec->id;
898 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
899 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
900 create ? INSERT : NO_INSERT);
901
902 if (!slot)
903 return NULL;
904
905 if (*slot)
906 {
907 ret = (struct elf_i386_link_hash_entry *) *slot;
908 return &ret->elf;
909 }
910
911 ret = (struct elf_i386_link_hash_entry *)
912 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
913 sizeof (struct elf_i386_link_hash_entry));
914 if (ret)
915 {
916 memset (ret, 0, sizeof (*ret));
917 ret->elf.indx = sec->id;
918 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
919 ret->elf.dynindx = -1;
c25bc9fc
L		 920 *slot = ret;
921 }
922 return &ret->elf;
923}
924
252b5132
RH		 925/* Create an i386 ELF linker hash table. */
926
927static struct bfd_link_hash_table *
55fd94b0 928elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 929{
930 struct elf_i386_link_hash_table *ret;
dc810e39 931 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 932
a50b1753 933 ret = (struct elf_i386_link_hash_table *) bfd_malloc (amt);
ebe50bae 934 if (ret == NULL)
252b5132
RH		 935 return NULL;
936
eb4ff4d6
L		 937 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
938 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 939 sizeof (struct elf_i386_link_hash_entry),
940 I386_ELF_DATA))
252b5132 941 {
e2d34d7d 942 free (ret);
252b5132
RH		 943 return NULL;
944 }
945
6725bdbf
AM		 946 ret->sdynbss = NULL;
947 ret->srelbss = NULL;
332ce62b 948 ret->plt_eh_frame = NULL;
7a624474 949 ret->tls_ldm_got.refcount = 0;
5ae0bfb6 950 ret->next_tls_desc_index = 0;
67a4f2b7 951 ret->sgotplt_jump_table_size = 0;
87d72d41 952 ret->sym_cache.abfd = NULL;
eac338cf 953 ret->srelplt2 = NULL;
9f03412a 954 ret->tls_module_base = NULL;
e1f98742
L		 955 ret->next_jump_slot_index = 0;
956 ret->next_irelative_index = 0;
6725bdbf 957
c25bc9fc
L		 958 ret->loc_hash_table = htab_try_create (1024,
959 elf_i386_local_htab_hash,
960 elf_i386_local_htab_eq,
961 NULL);
962 ret->loc_hash_memory = objalloc_create ();
963 if (!ret->loc_hash_table || !ret->loc_hash_memory)
964 {
965 free (ret);
966 return NULL;
967 }
968
ebe50bae 969 return &ret->elf.root;
252b5132
RH		 970}
971
c25bc9fc
L		 972/* Destroy an i386 ELF linker hash table. */
973
974static void
975elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash)
976{
977 struct elf_i386_link_hash_table *htab
978 = (struct elf_i386_link_hash_table *) hash;
979
980 if (htab->loc_hash_table)
981 htab_delete (htab->loc_hash_table);
982 if (htab->loc_hash_memory)
983 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
984 _bfd_generic_link_hash_table_free (hash);
985}
986
6725bdbf
AM		 987/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
988 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
989 hash table. */
990
b34976b6 991static bfd_boolean
55fd94b0 992elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 993{
994 struct elf_i386_link_hash_table *htab;
995
6725bdbf 996 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 997 return FALSE;
6725bdbf 998
6de2ae4a 999 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1000 if (htab == NULL)
1001 return FALSE;
1002
6725bdbf
AM		 1003 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
1004 if (!info->shared)
1005 htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
1006
6de2ae4a 1007 if (!htab->sdynbss
6725bdbf
AM		 1008 || (!info->shared && !htab->srelbss))
1009 abort ();
1010
23209a78 1011 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1012 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1013 &htab->srelplt2))
711de32c 1014 return FALSE;
eac338cf 1015
e41b3a13
JJ		 1016 if (!info->no_ld_generated_unwind_info
1017 && bfd_get_section_by_name (dynobj, ".eh_frame") == NULL
1018 && htab->elf.splt != NULL)
1019 {
1020 flagword flags = get_elf_backend_data (dynobj)->dynamic_sec_flags;
1021 htab->plt_eh_frame
1022 = bfd_make_section_with_flags (dynobj, ".eh_frame",
1023 flags | SEC_READONLY);
1024 if (htab->plt_eh_frame == NULL
1025 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1026 return FALSE;
1027
1028 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
1029 htab->plt_eh_frame->contents
1030 = bfd_alloc (dynobj, htab->plt_eh_frame->size);
1031 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
1032 sizeof (elf_i386_eh_frame_plt));
1033 }
1034
b34976b6 1035 return TRUE;
6725bdbf
AM		 1036}
1037
ebe50bae
AM		 1038/* Copy the extra info we tack onto an elf_link_hash_entry. */
1039
51b64d56 1040static void
fcfa13d2 1041elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1042 struct elf_link_hash_entry *dir,
1043 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1044{
1045 struct elf_i386_link_hash_entry *edir, *eind;
1046
1047 edir = (struct elf_i386_link_hash_entry *) dir;
1048 eind = (struct elf_i386_link_hash_entry *) ind;
1049
bbd7ec4a 1050 if (eind->dyn_relocs != NULL)
ebe50bae 1051 {
bbd7ec4a
AM		 1052 if (edir->dyn_relocs != NULL)
1053 {
e03a8ed8
L		 1054 struct elf_dyn_relocs **pp;
1055 struct elf_dyn_relocs *p;
bbd7ec4a 1056
fcfa13d2 1057 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1058 list. Merge any entries against the same section. */
1059 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1060 {
e03a8ed8 1061 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1062
1063 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1064 if (q->sec == p->sec)
1065 {
1066 q->pc_count += p->pc_count;
1067 q->count += p->count;
1068 *pp = p->next;
1069 break;
1070 }
1071 if (q == NULL)
1072 pp = &p->next;
1073 }
1074 *pp = edir->dyn_relocs;
1075 }
1076
ebe50bae
AM		 1077 edir->dyn_relocs = eind->dyn_relocs;
1078 eind->dyn_relocs = NULL;
1079 }
ebe50bae 1080
cd67d266
JJ		 1081 if (ind->root.type == bfd_link_hash_indirect
1082 && dir->got.refcount <= 0)
1083 {
1084 edir->tls_type = eind->tls_type;
1085 eind->tls_type = GOT_UNKNOWN;
1086 }
81848ca0
AM		 1087
1088 if (ELIMINATE_COPY_RELOCS
1089 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1090 && dir->dynamic_adjusted)
1091 {
1092 /* If called to transfer flags for a weakdef during processing
1093 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1094 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1095 dir->ref_dynamic |= ind->ref_dynamic;
1096 dir->ref_regular |= ind->ref_regular;
1097 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1098 dir->needs_plt |= ind->needs_plt;
1099 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1100 }
81848ca0 1101 else
fcfa13d2 1102 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
ebe50bae
AM		 1103}
1104
142411ca
L		 1105/* Return TRUE if the TLS access code sequence support transition
1106 from R_TYPE. */
1107
1108static bfd_boolean
1109elf_i386_check_tls_transition (bfd *abfd, asection *sec,
1110 bfd_byte *contents,
1111 Elf_Internal_Shdr *symtab_hdr,
1112 struct elf_link_hash_entry **sym_hashes,
1113 unsigned int r_type,
1114 const Elf_Internal_Rela *rel,
1115 const Elf_Internal_Rela *relend)
13ae64f3 1116{
142411ca
L		 1117 unsigned int val, type;
1118 unsigned long r_symndx;
1119 struct elf_link_hash_entry *h;
1120 bfd_vma offset;
1121
1122 /* Get the section contents. */
1123 if (contents == NULL)
1124 {
1125 if (elf_section_data (sec)->this_hdr.contents != NULL)
1126 contents = elf_section_data (sec)->this_hdr.contents;
1127 else
1128 {
1129 /* FIXME: How to better handle error condition? */
1130 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1131 return FALSE;
13ae64f3 1132
142411ca
L		 1133 /* Cache the section contents for elf_link_input_bfd. */
1134 elf_section_data (sec)->this_hdr.contents = contents;
1135 }
1136 }
1137
1138 offset = rel->r_offset;
13ae64f3 1139 switch (r_type)
142411ca
L		 1140 {
1141 case R_386_TLS_GD:
1142 case R_386_TLS_LDM:
1143 if (offset < 2 || (rel + 1) >= relend)
1144 return FALSE;
1145
1146 type = bfd_get_8 (abfd, contents + offset - 2);
1147 if (r_type == R_386_TLS_GD)
1148 {
09e8c3bf 1149 /* Check transition from GD access model. Only
142411ca
L		 1150 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1151 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1152 can transit to different access model. */
1153 if ((offset + 10) > sec->size ||
1154 (type != 0x8d && type != 0x04))
1155 return FALSE;
1156
1157 val = bfd_get_8 (abfd, contents + offset - 1);
1158 if (type == 0x04)
1159 {
1160 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1161 if (offset < 3)
1162 return FALSE;
1163
1164 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1165 return FALSE;
1166
1167 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1168 return FALSE;
1169 }
1170 else
1171 {
1172 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1173 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1174 return FALSE;
1175
1176 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1177 return FALSE;
1178 }
1179 }
1180 else
1181 {
1182 /* Check transition from LD access model. Only
1183 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1184 can transit to different access model. */
1185 if (type != 0x8d || (offset + 9) > sec->size)
1186 return FALSE;
1187
1188 val = bfd_get_8 (abfd, contents + offset - 1);
1189 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1190 return FALSE;
1191 }
1192
1193 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1194 return FALSE;
1195
1196 r_symndx = ELF32_R_SYM (rel[1].r_info);
1197 if (r_symndx < symtab_hdr->sh_info)
1198 return FALSE;
1199
1200 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b
L		 1201 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1202 may be versioned. */
142411ca
L		 1203 return (h != NULL
1204 && h->root.root.string != NULL
1205 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1206 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
c4fb387b
L		 1207 && (strncmp (h->root.root.string, "___tls_get_addr",
1208 15) == 0));
142411ca
L		 1209
1210 case R_386_TLS_IE:
1211 /* Check transition from IE access model:
1212 movl foo@indntpoff(%rip), %eax
1213 movl foo@indntpoff(%rip), %reg
1214 addl foo@indntpoff(%rip), %reg
1215 */
1216
1217 if (offset < 1 || (offset + 4) > sec->size)
1218 return FALSE;
1219
1220 /* Check "movl foo@tpoff(%rip), %eax" first. */
1221 val = bfd_get_8 (abfd, contents + offset - 1);
1222 if (val == 0xa1)
1223 return TRUE;
1224
1225 if (offset < 2)
1226 return FALSE;
1227
1228 /* Check movl|addl foo@tpoff(%rip), %reg. */
1229 type = bfd_get_8 (abfd, contents + offset - 2);
1230 return ((type == 0x8b || type == 0x03)
1231 && (val & 0xc7) == 0x05);
1232
1233 case R_386_TLS_GOTIE:
1234 case R_386_TLS_IE_32:
1235 /* Check transition from {IE_32,GOTIE} access model:
1236 subl foo@{tpoff,gontoff}(%reg1), %reg2
1237 movl foo@{tpoff,gontoff}(%reg1), %reg2
1238 addl foo@{tpoff,gontoff}(%reg1), %reg2
1239 */
1240
1241 if (offset < 2 || (offset + 4) > sec->size)
1242 return FALSE;
1243
1244 val = bfd_get_8 (abfd, contents + offset - 1);
1245 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1246 return FALSE;
1247
1248 type = bfd_get_8 (abfd, contents + offset - 2);
1249 return type == 0x8b || type == 0x2b || type == 0x03;
1250
1251 case R_386_TLS_GOTDESC:
1252 /* Check transition from GDesc access model:
1253 leal x@tlsdesc(%ebx), %eax
1254
1255 Make sure it's a leal adding ebx to a 32-bit offset
1256 into any register, although it's probably almost always
1257 going to be eax. */
1258
1259 if (offset < 2 || (offset + 4) > sec->size)
1260 return FALSE;
1261
1262 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1263 return FALSE;
1264
1265 val = bfd_get_8 (abfd, contents + offset - 1);
1266 return (val & 0xc7) == 0x83;
1267
1268 case R_386_TLS_DESC_CALL:
1269 /* Check transition from GDesc access model:
1270 call *x@tlsdesc(%rax)
1271 */
1272 if (offset + 2 <= sec->size)
1273 {
1274 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM		 1275 static const unsigned char call[] = { 0xff, 0x10 };
1276 return memcmp (contents + offset, call, 2) == 0;
142411ca
L		 1277 }
1278
1279 return FALSE;
1280
1281 default:
1282 abort ();
1283 }
1284}
1285
1286/* Return TRUE if the TLS access transition is OK or no transition
1287 will be performed. Update R_TYPE if there is a transition. */
1288
1289static bfd_boolean
1290elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1291 asection *sec, bfd_byte *contents,
1292 Elf_Internal_Shdr *symtab_hdr,
1293 struct elf_link_hash_entry **sym_hashes,
1294 unsigned int *r_type, int tls_type,
1295 const Elf_Internal_Rela *rel,
1296 const Elf_Internal_Rela *relend,
4c544807
L		 1297 struct elf_link_hash_entry *h,
1298 unsigned long r_symndx)
142411ca
L		 1299{
1300 unsigned int from_type = *r_type;
1301 unsigned int to_type = from_type;
1302 bfd_boolean check = TRUE;
1303
bb1cb422
L		 1304 /* Skip TLS transition for functions. */
1305 if (h != NULL
1306 && (h->type == STT_FUNC
1307 || h->type == STT_GNU_IFUNC))
1308 return TRUE;
1309
142411ca 1310 switch (from_type)
13ae64f3
JJ		 1311 {
1312 case R_386_TLS_GD:
67a4f2b7
AO		 1313 case R_386_TLS_GOTDESC:
1314 case R_386_TLS_DESC_CALL:
13ae64f3 1315 case R_386_TLS_IE_32:
37e55690
JJ		 1316 case R_386_TLS_IE:
1317 case R_386_TLS_GOTIE:
1d85728f 1318 if (info->executable)
142411ca
L		 1319 {
1320 if (h == NULL)
1321 to_type = R_386_TLS_LE_32;
1322 else if (from_type != R_386_TLS_IE
1323 && from_type != R_386_TLS_GOTIE)
1324 to_type = R_386_TLS_IE_32;
1325 }
1326
1327 /* When we are called from elf_i386_relocate_section, CONTENTS
1328 isn't NULL and there may be additional transitions based on
1329 TLS_TYPE. */
1330 if (contents != NULL)
1331 {
1332 unsigned int new_to_type = to_type;
1333
1d85728f 1334 if (info->executable
142411ca
L		 1335 && h != NULL
1336 && h->dynindx == -1
1337 && (tls_type & GOT_TLS_IE))
1338 new_to_type = R_386_TLS_LE_32;
1339
1340 if (to_type == R_386_TLS_GD
1341 || to_type == R_386_TLS_GOTDESC
1342 || to_type == R_386_TLS_DESC_CALL)
1343 {
1344 if (tls_type == GOT_TLS_IE_POS)
1345 new_to_type = R_386_TLS_GOTIE;
1346 else if (tls_type & GOT_TLS_IE)
1347 new_to_type = R_386_TLS_IE_32;
1348 }
1349
1350 /* We checked the transition before when we were called from
1351 elf_i386_check_relocs. We only want to check the new
1352 transition which hasn't been checked before. */
1353 check = new_to_type != to_type && from_type == to_type;
1354 to_type = new_to_type;
1355 }
1356
1357 break;
1358
13ae64f3 1359 case R_386_TLS_LDM:
1d85728f 1360 if (info->executable)
142411ca
L		 1361 to_type = R_386_TLS_LE_32;
1362 break;
1363
1364 default:
1365 return TRUE;
1366 }
1367
1368 /* Return TRUE if there is no transition. */
1369 if (from_type == to_type)
1370 return TRUE;
1371
1372 /* Check if the transition can be performed. */
1373 if (check
1374 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1375 symtab_hdr, sym_hashes,
1376 from_type, rel, relend))
1377 {
2f629d23 1378 reloc_howto_type *from, *to;
4c544807 1379 const char *name;
142411ca
L		 1380
1381 from = elf_i386_rtype_to_howto (abfd, from_type);
1382 to = elf_i386_rtype_to_howto (abfd, to_type);
1383
4c544807
L		 1384 if (h)
1385 name = h->root.root.string;
1386 else
1387 {
4c544807 1388 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1389
4c544807 1390 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1391 if (htab == NULL)
1392 name = "*unknown*";
1393 else
1394 {
1395 Elf_Internal_Sym *isym;
1396
1397 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1398 abfd, r_symndx);
1399 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1400 }
4c544807
L		 1401 }
1402
142411ca
L		 1403 (*_bfd_error_handler)
1404 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1405 "in section `%A' failed"),
4c544807 1406 abfd, sec, from->name, to->name, name,
142411ca
L		 1407 (unsigned long) rel->r_offset);
1408 bfd_set_error (bfd_error_bad_value);
1409 return FALSE;
13ae64f3
JJ		 1410 }
1411
142411ca
L		 1412 *r_type = to_type;
1413 return TRUE;
13ae64f3
JJ		 1414}
1415
252b5132 1416/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1417 calculate needed space in the global offset table, procedure linkage
1418 table, and dynamic reloc sections. */
252b5132 1419
b34976b6 1420static bfd_boolean
55fd94b0
AM		 1421elf_i386_check_relocs (bfd *abfd,
1422 struct bfd_link_info *info,
1423 asection *sec,
1424 const Elf_Internal_Rela *relocs)
252b5132 1425{
6725bdbf 1426 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1427 Elf_Internal_Shdr *symtab_hdr;
1428 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1429 const Elf_Internal_Rela *rel;
1430 const Elf_Internal_Rela *rel_end;
252b5132
RH		 1431 asection *sreloc;
1432
1049f94e 1433 if (info->relocatable)
b34976b6 1434 return TRUE;
252b5132 1435
0ffa91dd
NC		 1436 BFD_ASSERT (is_i386_elf (abfd));
1437
6725bdbf 1438 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1439 if (htab == NULL)
1440 return FALSE;
1441
0ffa91dd 1442 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1443 sym_hashes = elf_sym_hashes (abfd);
252b5132 1444
252b5132
RH		 1445 sreloc = NULL;
1446
1447 rel_end = relocs + sec->reloc_count;
1448 for (rel = relocs; rel < rel_end; rel++)
1449 {
13ae64f3 1450 unsigned int r_type;
252b5132
RH		 1451 unsigned long r_symndx;
1452 struct elf_link_hash_entry *h;
4c544807
L		 1453 Elf_Internal_Sym *isym;
1454 const char *name;
252b5132
RH		 1455
1456 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1457 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1458
d9bc7a44 1459 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1460 {
d003868e
AM		 1461 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1462 abfd,
8f615d07 1463 r_symndx);
b34976b6 1464 return FALSE;
f5f31454
L		 1465 }
1466
252b5132 1467 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1468 {
1469 /* A local symbol. */
c2e61a4e
L		 1470 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1471 abfd, r_symndx);
1472 if (isym == NULL)
1473 return FALSE;
c25bc9fc
L		 1474
1475 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1476 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1477 {
9fff0c39 1478 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1479 if (h == NULL)
c2e61a4e 1480 return FALSE;
6bbec505 1481
c25bc9fc
L		 1482 /* Fake a STT_GNU_IFUNC symbol. */
1483 h->type = STT_GNU_IFUNC;
1484 h->def_regular = 1;
1485 h->ref_regular = 1;
1486 h->forced_local = 1;
1487 h->root.type = bfd_link_hash_defined;
1488 }
1489 else
1490 h = NULL;
1491 }
252b5132 1492 else
71cb9464 1493 {
4c544807 1494 isym = NULL;
71cb9464
L		 1495 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1496 while (h->root.type == bfd_link_hash_indirect
1497 || h->root.type == bfd_link_hash_warning)
1498 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1499 }
cbe950e9 1500
c25bc9fc
L		 1501 if (h != NULL)
1502 {
cbe950e9
L		 1503 /* Create the ifunc sections for static executables. If we
1504 never see an indirect function symbol nor we are building
1505 a static executable, those sections will be empty and
1506 won't appear in output. */
1507 switch (r_type)
1508 {
1509 default:
1510 break;
1511
1512 case R_386_32:
1513 case R_386_PC32:
1514 case R_386_PLT32:
1515 case R_386_GOT32:
1516 case R_386_GOTOFF:
9d4057ee
AM		 1517 if (htab->elf.dynobj == NULL)
1518 htab->elf.dynobj = abfd;
1519 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1520 return FALSE;
cbe950e9
L		 1521 break;
1522 }
1523
1524 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
1525 it here if it is defined in a non-shared object. */
1526 if (h->type == STT_GNU_IFUNC
1527 && h->def_regular)
1528 {
1529 /* It is referenced by a non-shared object. */
1530 h->ref_regular = 1;
7ae26bc1 1531 h->needs_plt = 1;
6bbec505 1532
cbe950e9
L		 1533 /* STT_GNU_IFUNC symbol must go through PLT. */
1534 h->plt.refcount += 1;
1535
1536 /* STT_GNU_IFUNC needs dynamic sections. */
1537 if (htab->elf.dynobj == NULL)
1538 htab->elf.dynobj = abfd;
1539
1540 switch (r_type)
1541 {
048cbda4 1542 default:
4c544807
L		 1543 if (h->root.root.string)
1544 name = h->root.root.string;
1545 else
1546 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1547 NULL);
048cbda4
L		 1548 (*_bfd_error_handler)
1549 (_("%B: relocation %s against STT_GNU_IFUNC "
1550 "symbol `%s' isn't handled by %s"), abfd,
1551 elf_howto_table[r_type].name,
4c544807 1552 name, __FUNCTION__);
048cbda4 1553 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1554 return FALSE;
cbe950e9
L		 1555
1556 case R_386_32:
710ab287
L		 1557 h->non_got_ref = 1;
1558 h->pointer_equality_needed = 1;
1559 if (info->shared)
1560 {
710ab287
L		 1561 /* We must copy these reloc types into the
1562 output file. Create a reloc section in
1563 dynobj and make room for this reloc. */
e03a8ed8
L		 1564 sreloc = _bfd_elf_create_ifunc_dyn_reloc
1565 (abfd, info, sec, sreloc,
1566 &((struct elf_i386_link_hash_entry *) h)->dyn_relocs);
710ab287 1567 if (sreloc == NULL)
c2e61a4e 1568 return FALSE;
710ab287
L		 1569 }
1570 break;
1571
cbe950e9
L		 1572 case R_386_PC32:
1573 h->non_got_ref = 1;
cbe950e9
L		 1574 break;
1575
1576 case R_386_PLT32:
1577 break;
1578
1579 case R_386_GOT32:
1580 case R_386_GOTOFF:
7afd84dc 1581 h->got.refcount += 1;
6de2ae4a
L		 1582 if (htab->elf.sgot == NULL
1583 && !_bfd_elf_create_got_section (htab->elf.dynobj,
cbe950e9 1584 info))
c2e61a4e 1585 return FALSE;
cbe950e9
L		 1586 break;
1587 }
1588
1589 continue;
1590 }
71cb9464 1591 }
252b5132 1592
142411ca
L		 1593 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1594 symtab_hdr, sym_hashes,
1595 &r_type, GOT_UNKNOWN,
23209a78 1596 rel, rel_end, h, r_symndx))
c2e61a4e 1597 return FALSE;
13ae64f3
JJ		 1598
1599 switch (r_type)
252b5132 1600 {
37e55690
JJ		 1601 case R_386_TLS_LDM:
1602 htab->tls_ldm_got.refcount += 1;
1603 goto create_got;
1604
1605 case R_386_PLT32:
1606 /* This symbol requires a procedure linkage table entry. We
1607 actually build the entry in adjust_dynamic_symbol,
1608 because this might be a case of linking PIC code which is
1609 never referenced by a dynamic object, in which case we
1610 don't need to generate a procedure linkage table entry
1611 after all. */
1612
1613 /* If this is a local symbol, we resolve it directly without
1614 creating a procedure linkage table entry. */
1615 if (h == NULL)
1616 continue;
1617
f5385ebf 1618 h->needs_plt = 1;
37e55690
JJ		 1619 h->plt.refcount += 1;
1620 break;
1621
13ae64f3 1622 case R_386_TLS_IE_32:
37e55690
JJ		 1623 case R_386_TLS_IE:
1624 case R_386_TLS_GOTIE:
1d85728f 1625 if (!info->executable)
13ae64f3 1626 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1627 /* Fall through */
1628
252b5132 1629 case R_386_GOT32:
13ae64f3 1630 case R_386_TLS_GD:
67a4f2b7
AO		 1631 case R_386_TLS_GOTDESC:
1632 case R_386_TLS_DESC_CALL:
252b5132 1633 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1634 {
1635 int tls_type, old_tls_type;
1636
1637 switch (r_type)
1638 {
1639 default:
1640 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1641 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1642 case R_386_TLS_GOTDESC:
1643 case R_386_TLS_DESC_CALL:
1644 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1645 case R_386_TLS_IE_32:
1646 if (ELF32_R_TYPE (rel->r_info) == r_type)
1647 tls_type = GOT_TLS_IE_NEG;
1648 else
ebcfb3c0
JJ		 1649 /* If this is a GD->IE transition, we may use either of
1650 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1651 tls_type = GOT_TLS_IE;
1652 break;
1653 case R_386_TLS_IE:
1654 case R_386_TLS_GOTIE:
1655 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1656 }
1657
1658 if (h != NULL)
1659 {
1660 h->got.refcount += 1;
1661 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1662 }
1663 else
1664 {
1665 bfd_signed_vma *local_got_refcounts;
1666
1667 /* This is a global offset table entry for a local symbol. */
1668 local_got_refcounts = elf_local_got_refcounts (abfd);
1669 if (local_got_refcounts == NULL)
1670 {
1671 bfd_size_type size;
1672
1673 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1674 size *= (sizeof (bfd_signed_vma)
1675 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1676 local_got_refcounts = (bfd_signed_vma *)
1677 bfd_zalloc (abfd, size);
13ae64f3 1678 if (local_got_refcounts == NULL)
c2e61a4e 1679 return FALSE;
13ae64f3 1680 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1681 elf_i386_local_tlsdesc_gotent (abfd)
1682 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1683 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1684 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1685 }
1686 local_got_refcounts[r_symndx] += 1;
1687 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1688 }
1689
37e55690
JJ		 1690 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1691 tls_type |= old_tls_type;
13ae64f3
JJ		 1692 /* If a TLS symbol is accessed using IE at least once,
1693 there is no point to use dynamic model for it. */
ebcfb3c0 1694 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1695 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1696 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1697 {
67a4f2b7 1698 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1699 tls_type = old_tls_type;
67a4f2b7
AO		 1700 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1701 && GOT_TLS_GD_ANY_P (tls_type))
1702 tls_type |= old_tls_type;
13ae64f3
JJ		 1703 else
1704 {
09a24cbf 1705 if (h)
4c544807
L		 1706 name = h->root.root.string;
1707 else
1708 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1709 NULL);
13ae64f3 1710 (*_bfd_error_handler)
d003868e 1711 (_("%B: `%s' accessed both as normal and "
55fd94b0 1712 "thread local symbol"),
4c544807 1713 abfd, name);
c2e61a4e 1714 return FALSE;
13ae64f3
JJ		 1715 }
1716 }
1717
1718 if (old_tls_type != tls_type)
1719 {
1720 if (h != NULL)
1721 elf_i386_hash_entry (h)->tls_type = tls_type;
1722 else
1723 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1724 }
1725 }
0ac8d2ca
AM		 1726 /* Fall through */
1727
1728 case R_386_GOTOFF:
1729 case R_386_GOTPC:
13ae64f3 1730 create_got:
6de2ae4a 1731 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 1732 {
1733 if (htab->elf.dynobj == NULL)
1734 htab->elf.dynobj = abfd;
6de2ae4a 1735 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1736 return FALSE;
0ac8d2ca 1737 }
37e55690
JJ		 1738 if (r_type != R_386_TLS_IE)
1739 break;
1740 /* Fall through */
252b5132 1741
37e55690
JJ		 1742 case R_386_TLS_LE_32:
1743 case R_386_TLS_LE:
1d85728f 1744 if (info->executable)
37e55690 1745 break;
bffbf940 1746 info->flags |= DF_STATIC_TLS;
b34976b6 1747 /* Fall through */
252b5132
RH		 1748
1749 case R_386_32:
1750 case R_386_PC32:
710ab287 1751 if (h != NULL && info->executable)
6725bdbf 1752 {
12d0ee4a 1753 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1754 need a copy reloc. We can't check reliably at this
1755 stage whether the section is read-only, as input
1756 sections have not yet been mapped to output sections.
1757 Tentatively set the flag for now, and correct in
1758 adjust_dynamic_symbol. */
f5385ebf 1759 h->non_got_ref = 1;
12d0ee4a
AM		 1760
1761 /* We may need a .plt entry if the function this reloc
1762 refers to is in a shared lib. */
51b64d56 1763 h->plt.refcount += 1;
c6585bbb 1764 if (r_type != R_386_PC32)
f5385ebf 1765 h->pointer_equality_needed = 1;
6725bdbf 1766 }
7843f00e 1767
252b5132 1768 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1769 against a global symbol, or a non PC relative reloc
1770 against a local symbol, then we need to copy the reloc
1771 into the shared library. However, if we are linking with
1772 -Bsymbolic, we do not need to copy a reloc against a
1773 global symbol which is defined in an object we are
1774 including in the link (i.e., DEF_REGULAR is set). At
1775 this point we have not seen all the input files, so it is
1776 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1777 later (it is never cleared). In case of a weak definition,
1778 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1779 a shared library. We account for that possibility below by
1f655a09
L		 1780 storing information in the relocs_copied field of the hash
1781 table entry. A similar situation occurs when creating
1782 shared libraries and symbol visibility changes render the
12d0ee4a 1783 symbol local.
56882138 1784
12d0ee4a
AM		 1785 If on the other hand, we are creating an executable, we
1786 may need to keep relocations for symbols satisfied by a
1787 dynamic library if we manage to avoid copy relocs for the
1788 symbol. */
1789 if ((info->shared
1790 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1791 && (r_type != R_386_PC32
12d0ee4a 1792 || (h != NULL
55255dae 1793 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1794 || h->root.type == bfd_link_hash_defweak
f5385ebf 1795 || !h->def_regular))))
a23b6845
AM		 1796 || (ELIMINATE_COPY_RELOCS
1797 && !info->shared
12d0ee4a
AM		 1798 && (sec->flags & SEC_ALLOC) != 0
1799 && h != NULL
12d0ee4a 1800 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1801 || !h->def_regular)))
252b5132 1802 {
e03a8ed8
L		 1803 struct elf_dyn_relocs *p;
1804 struct elf_dyn_relocs **head;
ec338859 1805
12d0ee4a
AM		 1806 /* We must copy these reloc types into the output file.
1807 Create a reloc section in dynobj and make room for
1808 this reloc. */
252b5132
RH		 1809 if (sreloc == NULL)
1810 {
0ac8d2ca
AM		 1811 if (htab->elf.dynobj == NULL)
1812 htab->elf.dynobj = abfd;
1813
83bac4b0
NC		 1814 sreloc = _bfd_elf_make_dynamic_reloc_section
1815 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1816
252b5132 1817 if (sreloc == NULL)
c2e61a4e 1818 return FALSE;
252b5132
RH		 1819 }
1820
0c715baa
AM		 1821 /* If this is a global symbol, we count the number of
1822 relocations we need for this symbol. */
1823 if (h != NULL)
252b5132 1824 {
ec338859 1825 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
0c715baa
AM		 1826 }
1827 else
1828 {
ec338859
AM		 1829 /* Track dynamic relocs needed for local syms too.
1830 We really need local syms available to do this
1831 easily. Oh well. */
87d72d41 1832 void **vpp;
ec338859 1833 asection *s;
87d72d41
AM		 1834
1835 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1836 abfd, r_symndx);
1837 if (isym == NULL)
1838 return FALSE;
1839
1840 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1841 if (s == NULL)
87d72d41 1842 s = sec;
ec338859 1843
e81d3500 1844 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1845 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1846 }
1847
1848 p = *head;
1849 if (p == NULL || p->sec != sec)
1850 {
1851 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1852 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1853 amt);
ec338859 1854 if (p == NULL)
c2e61a4e 1855 return FALSE;
ec338859
AM		 1856 p->next = *head;
1857 *head = p;
1858 p->sec = sec;
1859 p->count = 0;
1860 p->pc_count = 0;
252b5132 1861 }
ec338859
AM		 1862
1863 p->count += 1;
13ae64f3 1864 if (r_type == R_386_PC32)
ec338859 1865 p->pc_count += 1;
252b5132 1866 }
252b5132
RH		 1867 break;
1868
1869 /* This relocation describes the C++ object vtable hierarchy.
1870 Reconstruct it for later use during GC. */
1871 case R_386_GNU_VTINHERIT:
d17e0c6e 1872 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1873 return FALSE;
252b5132
RH		 1874 break;
1875
1876 /* This relocation describes which C++ vtable entries are actually
1877 used. Record for later use during GC. */
1878 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1879 BFD_ASSERT (h != NULL);
1880 if (h != NULL
1881 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c2e61a4e 1882 return FALSE;
252b5132
RH		 1883 break;
1884
1885 default:
1886 break;
1887 }
1888 }
1889
b34976b6 1890 return TRUE;
252b5132
RH		 1891}
1892
1893/* Return the section that should be marked against GC for a given
1894 relocation. */
1895
1896static asection *
55fd94b0 1897elf_i386_gc_mark_hook (asection *sec,
07adf181 1898 struct bfd_link_info *info,
55fd94b0
AM		 1899 Elf_Internal_Rela *rel,
1900 struct elf_link_hash_entry *h,
1901 Elf_Internal_Sym *sym)
252b5132
RH		 1902{
1903 if (h != NULL)
07adf181
AM		 1904 switch (ELF32_R_TYPE (rel->r_info))
1905 {
1906 case R_386_GNU_VTINHERIT:
1907 case R_386_GNU_VTENTRY:
1908 return NULL;
1909 }
1910
1911 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1912}
1913
1914/* Update the got entry reference counts for the section being removed. */
1915
b34976b6 1916static bfd_boolean
55fd94b0
AM		 1917elf_i386_gc_sweep_hook (bfd *abfd,
1918 struct bfd_link_info *info,
1919 asection *sec,
1920 const Elf_Internal_Rela *relocs)
252b5132 1921{
4dfe6ac6 1922 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 1923 Elf_Internal_Shdr *symtab_hdr;
1924 struct elf_link_hash_entry **sym_hashes;
1925 bfd_signed_vma *local_got_refcounts;
1926 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1927
7dda2462
TG		 1928 if (info->relocatable)
1929 return TRUE;
1930
4dfe6ac6
NC		 1931 htab = elf_i386_hash_table (info);
1932 if (htab == NULL)
1933 return FALSE;
1934
ec338859 1935 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1936
0ffa91dd 1937 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 1938 sym_hashes = elf_sym_hashes (abfd);
1939 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1940
1941 relend = relocs + sec->reloc_count;
1942 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1943 {
1944 unsigned long r_symndx;
1945 unsigned int r_type;
1946 struct elf_link_hash_entry *h = NULL;
37e55690 1947
26e41594
AM		 1948 r_symndx = ELF32_R_SYM (rel->r_info);
1949 if (r_symndx >= symtab_hdr->sh_info)
1950 {
26e41594 1951 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1952 while (h->root.type == bfd_link_hash_indirect
1953 || h->root.type == bfd_link_hash_warning)
1954 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1955 }
bb1cb422
L		 1956 else
1957 {
1958 /* A local symbol. */
1959 Elf_Internal_Sym *isym;
1960
1961 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1962 abfd, r_symndx);
1963
1964 /* Check relocation against local STT_GNU_IFUNC symbol. */
1965 if (isym != NULL
1966 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1967 {
1968 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
1969 if (h == NULL)
1970 abort ();
1971 }
1972 }
0c715baa 1973
3db2e7dd
L		 1974 if (h)
1975 {
1976 struct elf_i386_link_hash_entry *eh;
1977 struct elf_dyn_relocs **pp;
1978 struct elf_dyn_relocs *p;
1979
1980 eh = (struct elf_i386_link_hash_entry *) h;
1981 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1982 if (p->sec == sec)
1983 {
1984 /* Everything must go for SEC. */
1985 *pp = p->next;
1986 break;
1987 }
1988 }
1989
26e41594 1990 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 1991 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1992 symtab_hdr, sym_hashes,
1993 &r_type, GOT_UNKNOWN,
23209a78 1994 rel, relend, h, r_symndx))
142411ca
L		 1995 return FALSE;
1996
26e41594
AM		 1997 switch (r_type)
1998 {
1999 case R_386_TLS_LDM:
4dfe6ac6
NC		 2000 if (htab->tls_ldm_got.refcount > 0)
2001 htab->tls_ldm_got.refcount -= 1;
26e41594 2002 break;
0c715baa 2003
26e41594 2004 case R_386_TLS_GD:
67a4f2b7
AO		 2005 case R_386_TLS_GOTDESC:
2006 case R_386_TLS_DESC_CALL:
26e41594
AM		 2007 case R_386_TLS_IE_32:
2008 case R_386_TLS_IE:
2009 case R_386_TLS_GOTIE:
2010 case R_386_GOT32:
2011 if (h != NULL)
2012 {
2013 if (h->got.refcount > 0)
2014 h->got.refcount -= 1;
bb1cb422
L		 2015 if (h->type == STT_GNU_IFUNC)
2016 {
2017 if (h->plt.refcount > 0)
2018 h->plt.refcount -= 1;
2019 }
26e41594
AM		 2020 }
2021 else if (local_got_refcounts != NULL)
2022 {
2023 if (local_got_refcounts[r_symndx] > 0)
2024 local_got_refcounts[r_symndx] -= 1;
2025 }
2026 break;
0c715baa 2027
26e41594
AM		 2028 case R_386_32:
2029 case R_386_PC32:
3db2e7dd
L		 2030 if (info->shared
2031 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM		 2032 break;
2033 /* Fall through */
6725bdbf 2034
26e41594
AM		 2035 case R_386_PLT32:
2036 if (h != NULL)
2037 {
2038 if (h->plt.refcount > 0)
2039 h->plt.refcount -= 1;
2040 }
2041 break;
dd5724d5 2042
bb1cb422
L		 2043 case R_386_GOTOFF:
2044 if (h != NULL && h->type == STT_GNU_IFUNC)
2045 {
2046 if (h->got.refcount > 0)
2047 h->got.refcount -= 1;
2048 if (h->plt.refcount > 0)
2049 h->plt.refcount -= 1;
2050 }
2051 break;
2052
26e41594
AM		 2053 default:
2054 break;
2055 }
2056 }
252b5132 2057
b34976b6 2058 return TRUE;
252b5132
RH		 2059}
2060
2061/* Adjust a symbol defined by a dynamic object and referenced by a
2062 regular object. The current definition is in some section of the
2063 dynamic object, but we're not including those sections. We have to
2064 change the definition to something the rest of the link can
2065 understand. */
2066
b34976b6 2067static bfd_boolean
55fd94b0
AM		 2068elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2069 struct elf_link_hash_entry *h)
252b5132 2070{
6725bdbf 2071 struct elf_i386_link_hash_table *htab;
252b5132 2072 asection *s;
252b5132 2073
cbe950e9
L		 2074 /* STT_GNU_IFUNC symbol must go through PLT. */
2075 if (h->type == STT_GNU_IFUNC)
2076 {
2077 if (h->plt.refcount <= 0)
2078 {
2079 h->plt.offset = (bfd_vma) -1;
2080 h->needs_plt = 0;
2081 }
2082 return TRUE;
2083 }
2084
252b5132
RH		 2085 /* If this is a function, put it in the procedure linkage table. We
2086 will fill in the contents of the procedure linkage table later,
2087 when we know the address of the .got section. */
2088 if (h->type == STT_FUNC
f5385ebf 2089 || h->needs_plt)
252b5132 2090 {
6725bdbf 2091 if (h->plt.refcount <= 0
9c7a29a3
AM		 2092 || SYMBOL_CALLS_LOCAL (info, h)
2093 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2094 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2095 {
2096 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2097 file, but the symbol was never referred to by a dynamic
2098 object, or if all references were garbage collected. In
2099 such a case, we don't actually need to build a procedure
2100 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2101 h->plt.offset = (bfd_vma) -1;
f5385ebf 2102 h->needs_plt = 0;
252b5132
RH		 2103 }
2104
b34976b6 2105 return TRUE;
252b5132 2106 }
6725bdbf
AM		 2107 else
2108 /* It's possible that we incorrectly decided a .plt reloc was
2109 needed for an R_386_PC32 reloc to a non-function sym in
2110 check_relocs. We can't decide accurately between function and
2111 non-function syms in check-relocs; Objects loaded later in
2112 the link may change h->type. So fix it now. */
bbd7ec4a 2113 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2114
2115 /* If this is a weak symbol, and there is a real definition, the
2116 processor independent code will have arranged for us to see the
2117 real definition first, and we can just use the same value. */
f6e332e6 2118 if (h->u.weakdef != NULL)
252b5132 2119 {
f6e332e6
AM		 2120 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2121 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2122 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2123 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2124 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2125 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2126 return TRUE;
252b5132
RH		 2127 }
2128
2129 /* This is a reference to a symbol defined by a dynamic object which
2130 is not a function. */
2131
2132 /* If we are creating a shared library, we must presume that the
2133 only references to the symbol are via the global offset table.
2134 For such cases we need not do anything here; the relocations will
2135 be handled correctly by relocate_section. */
2136 if (info->shared)
b34976b6 2137 return TRUE;
252b5132 2138
7843f00e
ILT		 2139 /* If there are no references to this symbol that do not use the
2140 GOT, we don't need to generate a copy reloc. */
f5385ebf 2141 if (!h->non_got_ref)
b34976b6 2142 return TRUE;
7843f00e 2143
8bd621d8
AM		 2144 /* If -z nocopyreloc was given, we won't generate them either. */
2145 if (info->nocopyreloc)
2146 {
f5385ebf 2147 h->non_got_ref = 0;
b34976b6 2148 return TRUE;
8bd621d8
AM		 2149 }
2150
643796e3 2151 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2152 if (htab == NULL)
2153 return FALSE;
643796e3
DJ		 2154
2155 /* If there aren't any dynamic relocs in read-only sections, then
2156 we can keep the dynamic relocs and avoid the copy reloc. This
2157 doesn't work on VxWorks, where we can not have dynamic relocations
2158 (other than copy and jump slot relocations) in an executable. */
23209a78
RM		 2159 if (ELIMINATE_COPY_RELOCS
2160 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2161 {
a23b6845 2162 struct elf_i386_link_hash_entry * eh;
e03a8ed8 2163 struct elf_dyn_relocs *p;
ebe50bae 2164
a23b6845
AM		 2165 eh = (struct elf_i386_link_hash_entry *) h;
2166 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2167 {
2168 s = p->sec->output_section;
2169 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2170 break;
2171 }
2172
a23b6845
AM		 2173 if (p == NULL)
2174 {
f5385ebf 2175 h->non_got_ref = 0;
a23b6845
AM		 2176 return TRUE;
2177 }
ebe50bae
AM		 2178 }
2179
909272ee
AM		 2180 if (h->size == 0)
2181 {
2182 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2183 h->root.root.string);
2184 return TRUE;
2185 }
2186
252b5132
RH		 2187 /* We must allocate the symbol in our .dynbss section, which will
2188 become part of the .bss section of the executable. There will be
2189 an entry for this symbol in the .dynsym section. The dynamic
2190 object will contain position independent code, so all references
2191 from the dynamic object to this symbol will go through the global
2192 offset table. The dynamic linker will use the .dynsym entry to
2193 determine the address it must put in the global offset table, so
2194 both the dynamic object and the regular object will refer to the
2195 same memory location for the variable. */
2196
252b5132
RH		 2197 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2198 copy the initial value out of the dynamic object and into the
0ac8d2ca 2199 runtime process image. */
252b5132
RH		 2200 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2201 {
eea6121a 2202 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2203 h->needs_copy = 1;
252b5132
RH		 2204 }
2205
0ac8d2ca 2206 s = htab->sdynbss;
252b5132 2207
027297b7 2208 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH		 2209}
2210
6725bdbf 2211/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2212 dynamic relocs. */
6725bdbf 2213
b34976b6 2214static bfd_boolean
eb4ff4d6 2215elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2216{
2217 struct bfd_link_info *info;
2218 struct elf_i386_link_hash_table *htab;
5a15f56f 2219 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2220 struct elf_dyn_relocs *p;
25e762b9 2221 unsigned plt_entry_size;
6725bdbf 2222
e92d460e 2223 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2224 return TRUE;
6725bdbf 2225
cbe950e9 2226 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2227
6725bdbf
AM		 2228 info = (struct bfd_link_info *) inf;
2229 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2230 if (htab == NULL)
2231 return FALSE;
6725bdbf 2232
25e762b9
RM		 2233 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2234
cbe950e9
L		 2235 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2236 here if it is defined and referenced in a non-shared object. */
2237 if (h->type == STT_GNU_IFUNC
2238 && h->def_regular)
25e762b9
RM		 2239 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
2240 plt_entry_size, 4);
cbe950e9
L		 2241 else if (htab->elf.dynamic_sections_created
2242 && h->plt.refcount > 0)
6725bdbf 2243 {
5a15f56f
AM		 2244 /* Make sure this symbol is output as a dynamic symbol.
2245 Undefined weak syms won't yet be marked as dynamic. */
2246 if (h->dynindx == -1
f5385ebf 2247 && !h->forced_local)
5a15f56f 2248 {
c152c796 2249 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2250 return FALSE;
5a15f56f
AM		 2251 }
2252
4e795f50
AM		 2253 if (info->shared
2254 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2255 {
6de2ae4a 2256 asection *s = htab->elf.splt;
6725bdbf 2257
ced53ee5
AM		 2258 /* If this is the first .plt entry, make room for the special
2259 first entry. */
eea6121a 2260 if (s->size == 0)
25e762b9 2261 s->size += plt_entry_size;
6725bdbf 2262
eea6121a 2263 h->plt.offset = s->size;
6725bdbf 2264
ced53ee5
AM		 2265 /* If this symbol is not defined in a regular file, and we are
2266 not generating a shared library, then set the symbol to this
2267 location in the .plt. This is required to make function
2268 pointers compare as equal between the normal executable and
2269 the shared library. */
2270 if (! info->shared
f5385ebf 2271 && !h->def_regular)
ced53ee5
AM		 2272 {
2273 h->root.u.def.section = s;
2274 h->root.u.def.value = h->plt.offset;
2275 }
6725bdbf 2276
ced53ee5 2277 /* Make room for this entry. */
25e762b9 2278 s->size += plt_entry_size;
6725bdbf 2279
ced53ee5
AM		 2280 /* We also need to make an entry in the .got.plt section, which
2281 will be placed in the .got section by the linker script. */
6de2ae4a 2282 htab->elf.sgotplt->size += 4;
6725bdbf 2283
6725bdbf 2284 /* We also need to make an entry in the .rel.plt section. */
6de2ae4a 2285 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
e1f98742 2286 htab->elf.srelplt->reloc_count++;
eac338cf 2287
23209a78
RM		 2288 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
2289 && !info->shared)
eac338cf
PB		 2290 {
2291 /* VxWorks has a second set of relocations for each PLT entry
2292 in executables. They go in a separate relocation section,
2293 which is processed by the kernel loader. */
2294
2295 /* There are two relocations for the initial PLT entry: an
2296 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2297 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2298
25e762b9 2299 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2300 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2301
2302 /* There are two extra relocations for each subsequent PLT entry:
2303 an R_386_32 relocation for the GOT entry, and an R_386_32
2304 relocation for the PLT entry. */
2305
2306 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2307 }
6725bdbf 2308 }
ced53ee5
AM		 2309 else
2310 {
51b64d56 2311 h->plt.offset = (bfd_vma) -1;
f5385ebf 2312 h->needs_plt = 0;
ced53ee5 2313 }
6725bdbf
AM		 2314 }
2315 else
2316 {
51b64d56 2317 h->plt.offset = (bfd_vma) -1;
f5385ebf 2318 h->needs_plt = 0;
6725bdbf
AM		 2319 }
2320
67a4f2b7
AO		 2321 eh->tlsdesc_got = (bfd_vma) -1;
2322
37e55690 2323 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2324 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2325 if (h->got.refcount > 0
1d85728f 2326 && info->executable
13ae64f3 2327 && h->dynindx == -1
37e55690 2328 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2329 h->got.offset = (bfd_vma) -1;
13ae64f3 2330 else if (h->got.refcount > 0)
6725bdbf 2331 {
0ac8d2ca 2332 asection *s;
b34976b6 2333 bfd_boolean dyn;
13ae64f3 2334 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2335
5a15f56f
AM		 2336 /* Make sure this symbol is output as a dynamic symbol.
2337 Undefined weak syms won't yet be marked as dynamic. */
2338 if (h->dynindx == -1
f5385ebf 2339 && !h->forced_local)
5a15f56f 2340 {
c152c796 2341 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2342 return FALSE;
5a15f56f
AM		 2343 }
2344
6de2ae4a 2345 s = htab->elf.sgot;
67a4f2b7
AO		 2346 if (GOT_TLS_GDESC_P (tls_type))
2347 {
6de2ae4a 2348 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2349 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2350 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2351 h->got.offset = (bfd_vma) -2;
2352 }
2353 if (! GOT_TLS_GDESC_P (tls_type)
2354 || GOT_TLS_GD_P (tls_type))
2355 {
2356 h->got.offset = s->size;
2357 s->size += 4;
2358 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2359 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2360 s->size += 4;
2361 }
ebe50bae 2362 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2363 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2364 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2365 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2366 need two), R_386_TLS_GD needs one if local symbol and two if
2367 global. */
2368 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2369 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2370 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2371 || (tls_type & GOT_TLS_IE))
6de2ae4a 2372 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2373 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2374 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2375 else if (! GOT_TLS_GDESC_P (tls_type)
2376 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2377 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 2378 && (info->shared
2379 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2380 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2381 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2382 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2383 }
2384 else
51b64d56 2385 h->got.offset = (bfd_vma) -1;
6725bdbf 2386
5a15f56f 2387 if (eh->dyn_relocs == NULL)
b34976b6 2388 return TRUE;
5a15f56f 2389
0c715baa
AM		 2390 /* In the shared -Bsymbolic case, discard space allocated for
2391 dynamic pc-relative relocs against symbols which turn out to be
2392 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2393 space for pc-relative relocs that have become local due to symbol
2394 visibility changes. */
0c715baa
AM		 2395
2396 if (info->shared)
5a15f56f 2397 {
09695f56
AM		 2398 /* The only reloc that uses pc_count is R_386_PC32, which will
2399 appear on a call or on something like ".long foo - .". We
2400 want calls to protected symbols to resolve directly to the
2401 function rather than going via the plt. If people want
2402 function pointer comparisons to work as expected then they
2403 should avoid writing assembly like ".long foo - .". */
2404 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2405 {
e03a8ed8 2406 struct elf_dyn_relocs **pp;
0c715baa
AM		 2407
2408 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2409 {
2410 p->count -= p->pc_count;
2411 p->pc_count = 0;
2412 if (p->count == 0)
2413 *pp = p->next;
2414 else
2415 pp = &p->next;
2416 }
5a15f56f 2417 }
4e795f50 2418
23209a78 2419 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2420 {
e03a8ed8 2421 struct elf_dyn_relocs **pp;
3348747a
NS		 2422 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2423 {
2424 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2425 *pp = p->next;
2426 else
2427 pp = &p->next;
2428 }
2429 }
2430
4e795f50 2431 /* Also discard relocs on undefined weak syms with non-default
3348747a 2432 visibility. */
22d606e9 2433 if (eh->dyn_relocs != NULL
4e795f50 2434 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2435 {
2436 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2437 eh->dyn_relocs = NULL;
2438
2439 /* Make sure undefined weak symbols are output as a dynamic
2440 symbol in PIEs. */
2441 else if (h->dynindx == -1
2442 && !h->forced_local)
2443 {
2444 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2445 return FALSE;
2446 }
2447 }
0c715baa 2448 }
a23b6845 2449 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2450 {
2451 /* For the non-shared case, discard space for relocs against
2452 symbols which turn out to need copy relocs or are not
2453 dynamic. */
2454
f5385ebf
AM		 2455 if (!h->non_got_ref
2456 && ((h->def_dynamic
2457 && !h->def_regular)
ebe50bae 2458 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2459 && (h->root.type == bfd_link_hash_undefweak
2460 || h->root.type == bfd_link_hash_undefined))))
2461 {
2462 /* Make sure this symbol is output as a dynamic symbol.
2463 Undefined weak syms won't yet be marked as dynamic. */
2464 if (h->dynindx == -1
f5385ebf 2465 && !h->forced_local)
0c715baa 2466 {
c152c796 2467 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2468 return FALSE;
0c715baa 2469 }
5a15f56f 2470
0c715baa
AM		 2471 /* If that succeeded, we know we'll be keeping all the
2472 relocs. */
2473 if (h->dynindx != -1)
2474 goto keep;
2475 }
2476
2477 eh->dyn_relocs = NULL;
2478
ec338859 2479 keep: ;
5a15f56f
AM		 2480 }
2481
0c715baa
AM		 2482 /* Finally, allocate space. */
2483 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2484 {
e7c33416
NC		 2485 asection *sreloc;
2486
cbe950e9 2487 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2488
2489 BFD_ASSERT (sreloc != NULL);
eea6121a 2490 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2491 }
2492
b34976b6 2493 return TRUE;
6725bdbf
AM		 2494}
2495
c25bc9fc
L		 2496/* Allocate space in .plt, .got and associated reloc sections for
2497 local dynamic relocs. */
2498
2499static bfd_boolean
2500elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2501{
2502 struct elf_link_hash_entry *h
2503 = (struct elf_link_hash_entry *) *slot;
2504
2505 if (h->type != STT_GNU_IFUNC
2506 || !h->def_regular
2507 || !h->ref_regular
2508 || !h->forced_local
2509 || h->root.type != bfd_link_hash_defined)
2510 abort ();
2511
2512 return elf_i386_allocate_dynrelocs (h, inf);
2513}
2514
0c715baa
AM		 2515/* Find any dynamic relocs that apply to read-only sections. */
2516
b34976b6 2517static bfd_boolean
eb4ff4d6 2518elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2519{
2520 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2521 struct elf_dyn_relocs *p;
0c715baa 2522
aa715242
L		 2523 /* Skip local IFUNC symbols. */
2524 if (h->forced_local && h->type == STT_GNU_IFUNC)
2525 return TRUE;
2526
0c715baa
AM		 2527 eh = (struct elf_i386_link_hash_entry *) h;
2528 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2529 {
2530 asection *s = p->sec->output_section;
2531
2532 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2533 {
2534 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2535
2536 info->flags |= DF_TEXTREL;
2537
b70321a2
L		 2538 if (info->warn_shared_textrel && info->shared)
2539 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
2540 p->sec->owner, h->root.root.string,
2541 p->sec);
2542
0c715baa 2543 /* Not an error, just cut short the traversal. */
b34976b6 2544 return FALSE;
0c715baa
AM		 2545 }
2546 }
b34976b6 2547 return TRUE;
0c715baa
AM		 2548}
2549
252b5132
RH		 2550/* Set the sizes of the dynamic sections. */
2551
b34976b6 2552static bfd_boolean
23209a78 2553elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2554{
6725bdbf 2555 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2556 bfd *dynobj;
2557 asection *s;
b34976b6 2558 bfd_boolean relocs;
0c715baa 2559 bfd *ibfd;
252b5132 2560
6725bdbf 2561 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2562 if (htab == NULL)
2563 return FALSE;
ebe50bae 2564 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 2565 if (dynobj == NULL)
2566 abort ();
252b5132 2567
ebe50bae 2568 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2569 {
2570 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2571 if (info->executable)
252b5132
RH		 2572 {
2573 s = bfd_get_section_by_name (dynobj, ".interp");
ffb2e45b
AM		 2574 if (s == NULL)
2575 abort ();
eea6121a 2576 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 2577 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2578 }
161d71a6 2579 }
6725bdbf 2580
0c715baa
AM		 2581 /* Set up .got offsets for local syms, and space for local dynamic
2582 relocs. */
2583 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 2584 {
2585 bfd_signed_vma *local_got;
2586 bfd_signed_vma *end_local_got;
13ae64f3 2587 char *local_tls_type;
67a4f2b7 2588 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 2589 bfd_size_type locsymcount;
2590 Elf_Internal_Shdr *symtab_hdr;
2591 asection *srel;
6725bdbf 2592
0ffa91dd 2593 if (! is_i386_elf (ibfd))
161d71a6 2594 continue;
6725bdbf 2595
0c715baa
AM		 2596 for (s = ibfd->sections; s != NULL; s = s->next)
2597 {
e03a8ed8 2598 struct elf_dyn_relocs *p;
0c715baa 2599
e03a8ed8 2600 for (p = ((struct elf_dyn_relocs *)
e81d3500 2601 elf_section_data (s)->local_dynrel);
ec338859
AM		 2602 p != NULL;
2603 p = p->next)
0c715baa 2604 {
ec338859
AM		 2605 if (!bfd_is_abs_section (p->sec)
2606 && bfd_is_abs_section (p->sec->output_section))
2607 {
2608 /* Input section has been discarded, either because
2609 it is a copy of a linkonce section or due to
2610 linker script /DISCARD/, so we'll be discarding
2611 the relocs too. */
2612 }
23209a78 2613 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 2614 && strcmp (p->sec->output_section->name,
2615 ".tls_vars") == 0)
2616 {
2617 /* Relocations in vxworks .tls_vars sections are
2618 handled specially by the loader. */
2619 }
248866a8 2620 else if (p->count != 0)
ec338859
AM		 2621 {
2622 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2623 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 2624 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2625 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 2626 {
2627 info->flags |= DF_TEXTREL;
2628 if (info->warn_shared_textrel && info->shared)
2629 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
2630 p->sec->owner, p->sec);
b70321a2 2631 }
ec338859 2632 }
0c715baa
AM		 2633 }
2634 }
2635
2636 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 2637 if (!local_got)
2638 continue;
6725bdbf 2639
0ffa91dd 2640 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 2641 locsymcount = symtab_hdr->sh_info;
2642 end_local_got = local_got + locsymcount;
13ae64f3 2643 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2644 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 2645 s = htab->elf.sgot;
2646 srel = htab->elf.srelgot;
67a4f2b7
AO		 2647 for (; local_got < end_local_got;
2648 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2649 {
67a4f2b7 2650 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2651 if (*local_got > 0)
6725bdbf 2652 {
67a4f2b7
AO		 2653 if (GOT_TLS_GDESC_P (*local_tls_type))
2654 {
6de2ae4a 2655 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2656 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2657 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2658 *local_got = (bfd_vma) -2;
2659 }
2660 if (! GOT_TLS_GDESC_P (*local_tls_type)
2661 || GOT_TLS_GD_P (*local_tls_type))
2662 {
2663 *local_got = s->size;
2664 s->size += 4;
2665 if (GOT_TLS_GD_P (*local_tls_type)
2666 || *local_tls_type == GOT_TLS_IE_BOTH)
2667 s->size += 4;
2668 }
13ae64f3 2669 if (info->shared
67a4f2b7 2670 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 2671 || (*local_tls_type & GOT_TLS_IE))
2672 {
2673 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2674 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2675 else if (GOT_TLS_GD_P (*local_tls_type)
2676 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2677 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2678 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2679 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2680 }
6725bdbf 2681 }
161d71a6
L		 2682 else
2683 *local_got = (bfd_vma) -1;
6725bdbf 2684 }
252b5132 2685 }
6725bdbf 2686
13ae64f3
JJ		 2687 if (htab->tls_ldm_got.refcount > 0)
2688 {
2689 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2690 relocs. */
6de2ae4a
L		 2691 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2692 htab->elf.sgot->size += 8;
2693 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2694 }
2695 else
2696 htab->tls_ldm_got.offset = -1;
2697
0c715baa
AM		 2698 /* Allocate global sym .plt and .got entries, and space for global
2699 sym dynamic relocs. */
eb4ff4d6 2700 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2701
c25bc9fc
L		 2702 /* Allocate .plt and .got entries, and space for local symbols. */
2703 htab_traverse (htab->loc_hash_table,
2704 elf_i386_allocate_local_dynrelocs,
2705 info);
2706
67a4f2b7
AO		 2707 /* For every jump slot reserved in the sgotplt, reloc_count is
2708 incremented. However, when we reserve space for TLS descriptors,
2709 it's not incremented, so in order to compute the space reserved
2710 for them, it suffices to multiply the reloc count by the jump
e1f98742
L		 2711 slot size.
2712
2713 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2714 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2715 if (htab->elf.srelplt)
e1f98742
L		 2716 {
2717 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2718 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2719 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2720 }
2721 else if (htab->elf.irelplt)
2722 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2723
67a4f2b7 2724
a7b16ceb
L		 2725 if (htab->elf.sgotplt)
2726 {
e28df02b
L		 2727 struct elf_link_hash_entry *got;
2728 got = elf_link_hash_lookup (elf_hash_table (info),
2729 "_GLOBAL_OFFSET_TABLE_",
2730 FALSE, FALSE, FALSE);
2731
a7b16ceb 2732 /* Don't allocate .got.plt section if there are no GOT nor PLT
e28df02b
L		 2733 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
2734 if ((got == NULL
2735 || !got->ref_regular_nonweak)
2736 && (htab->elf.sgotplt->size
2737 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 2738 && (htab->elf.splt == NULL
2739 || htab->elf.splt->size == 0)
2740 && (htab->elf.sgot == NULL
2741 || htab->elf.sgot->size == 0)
2742 && (htab->elf.iplt == NULL
2743 || htab->elf.iplt->size == 0)
2744 && (htab->elf.igotplt == NULL
2745 || htab->elf.igotplt->size == 0))
2746 htab->elf.sgotplt->size = 0;
2747 }
2748
5a15f56f
AM		 2749 /* We now have determined the sizes of the various dynamic sections.
2750 Allocate memory for them. */
b34976b6 2751 relocs = FALSE;
252b5132
RH		 2752 for (s = dynobj->sections; s != NULL; s = s->next)
2753 {
eac338cf
PB		 2754 bfd_boolean strip_section = TRUE;
2755
252b5132
RH		 2756 if ((s->flags & SEC_LINKER_CREATED) == 0)
2757 continue;
2758
6de2ae4a
L		 2759 if (s == htab->elf.splt
2760 || s == htab->elf.sgot
2761 || s == htab->elf.sgotplt
2762 || s == htab->elf.iplt
2763 || s == htab->elf.igotplt
75ff4589 2764 || s == htab->sdynbss)
252b5132 2765 {
6725bdbf
AM		 2766 /* Strip this section if we don't need it; see the
2767 comment below. */
eac338cf
PB		 2768 /* We'd like to strip these sections if they aren't needed, but if
2769 we've exported dynamic symbols from them we must leave them.
2770 It's too late to tell BFD to get rid of the symbols. */
2771
7325306f 2772 if (htab->elf.hplt != NULL)
eac338cf 2773 strip_section = FALSE;
252b5132 2774 }
0112cd26 2775 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2776 {
6de2ae4a
L		 2777 if (s->size != 0
2778 && s != htab->elf.srelplt
2779 && s != htab->srelplt2)
b34976b6 2780 relocs = TRUE;
252b5132 2781
0ac8d2ca
AM		 2782 /* We use the reloc_count field as a counter if we need
2783 to copy relocs into the output file. */
5ae0bfb6 2784 s->reloc_count = 0;
252b5132 2785 }
6725bdbf 2786 else
252b5132
RH		 2787 {
2788 /* It's not one of our sections, so don't allocate space. */
2789 continue;
2790 }
2791
c456f082 2792 if (s->size == 0)
252b5132 2793 {
0ac8d2ca
AM		 2794 /* If we don't need this section, strip it from the
2795 output file. This is mostly to handle .rel.bss and
2796 .rel.plt. We must create both sections in
2797 create_dynamic_sections, because they must be created
2798 before the linker maps input sections to output
2799 sections. The linker does that before
2800 adjust_dynamic_symbol is called, and it is that
2801 function which decides whether anything needs to go
2802 into these sections. */
c456f082
AM		 2803 if (strip_section)
2804 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2805 continue;
2806 }
2807
c456f082
AM		 2808 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2809 continue;
2810
f69da49f
AM		 2811 /* Allocate memory for the section contents. We use bfd_zalloc
2812 here in case unused entries are not reclaimed before the
2813 section's contents are written out. This should not happen,
2814 but this way if it does, we get a R_386_NONE reloc instead
2815 of garbage. */
a50b1753 2816 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 2817 if (s->contents == NULL)
b34976b6 2818 return FALSE;
252b5132
RH		 2819 }
2820
e41b3a13
JJ		 2821 if (htab->plt_eh_frame != NULL
2822 && htab->elf.splt != NULL
2823 && htab->elf.splt->size != 0
2824 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0)
2825 bfd_put_32 (dynobj, htab->elf.splt->size,
2826 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
2827
ebe50bae 2828 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2829 {
2830 /* Add some entries to the .dynamic section. We fill in the
2831 values later, in elf_i386_finish_dynamic_sections, but we
2832 must add the entries now so that we get the correct size for
2833 the .dynamic section. The DT_DEBUG entry is filled in by the
2834 dynamic linker and used by the debugger. */
dc810e39 2835#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2836 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2837
36af4a4e 2838 if (info->executable)
252b5132 2839 {
dc810e39 2840 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2841 return FALSE;
252b5132
RH		 2842 }
2843
6de2ae4a 2844 if (htab->elf.splt->size != 0)
252b5132 2845 {
dc810e39
AM		 2846 if (!add_dynamic_entry (DT_PLTGOT, 0)
2847 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2848 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2849 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2850 return FALSE;
252b5132
RH		 2851 }
2852
2853 if (relocs)
2854 {
dc810e39
AM		 2855 if (!add_dynamic_entry (DT_REL, 0)
2856 || !add_dynamic_entry (DT_RELSZ, 0)
2857 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 2858 return FALSE;
252b5132 2859
0c715baa
AM		 2860 /* If any dynamic relocs apply to a read-only section,
2861 then we need a DT_TEXTREL entry. */
248866a8 2862 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 2863 elf_link_hash_traverse (&htab->elf,
2864 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 2865
2866 if ((info->flags & DF_TEXTREL) != 0)
2867 {
2868 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2869 return FALSE;
0c715baa 2870 }
252b5132 2871 }
23209a78 2872 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 2873 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2874 return FALSE;
252b5132 2875 }
dc810e39 2876#undef add_dynamic_entry
252b5132 2877
b34976b6 2878 return TRUE;
252b5132
RH		 2879}
2880
67a4f2b7
AO		 2881static bfd_boolean
2882elf_i386_always_size_sections (bfd *output_bfd,
2883 struct bfd_link_info *info)
2884{
2885 asection *tls_sec = elf_hash_table (info)->tls_sec;
2886
2887 if (tls_sec)
2888 {
2889 struct elf_link_hash_entry *tlsbase;
2890
2891 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
2892 "_TLS_MODULE_BASE_",
2893 FALSE, FALSE, FALSE);
2894
2895 if (tlsbase && tlsbase->type == STT_TLS)
2896 {
4dfe6ac6 2897 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 2898 struct bfd_link_hash_entry *bh = NULL;
2899 const struct elf_backend_data *bed
2900 = get_elf_backend_data (output_bfd);
2901
4dfe6ac6
NC		 2902 htab = elf_i386_hash_table (info);
2903 if (htab == NULL)
2904 return FALSE;
2905
67a4f2b7
AO		 2906 if (!(_bfd_generic_link_add_one_symbol
2907 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
2908 tls_sec, 0, NULL, FALSE,
2909 bed->collect, &bh)))
2910 return FALSE;
9f03412a 2911
4dfe6ac6 2912 htab->tls_module_base = bh;
9f03412a 2913
67a4f2b7
AO		 2914 tlsbase = (struct elf_link_hash_entry *)bh;
2915 tlsbase->def_regular = 1;
2916 tlsbase->other = STV_HIDDEN;
2917 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
2918 }
2919 }
2920
2921 return TRUE;
2922}
2923
38701953
AM		 2924/* Set the correct type for an x86 ELF section. We do this by the
2925 section name, which is a hack, but ought to work. */
2926
b34976b6 2927static bfd_boolean
55fd94b0
AM		 2928elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2929 Elf_Internal_Shdr *hdr,
2930 asection *sec)
38701953 2931{
91d6fa6a 2932 const char *name;
38701953
AM		 2933
2934 name = bfd_get_section_name (abfd, sec);
2935
2936 /* This is an ugly, but unfortunately necessary hack that is
2937 needed when producing EFI binaries on x86. It tells
2938 elf.c:elf_fake_sections() not to consider ".reloc" as a section
2939 containing ELF relocation info. We need this hack in order to
2940 be able to generate ELF binaries that can be translated into
2941 EFI applications (which are essentially COFF objects). Those
2942 files contain a COFF ".reloc" section inside an ELFNN object,
2943 which would normally cause BFD to segfault because it would
2944 attempt to interpret this section as containing relocation
2945 entries for section "oc". With this hack enabled, ".reloc"
2946 will be treated as a normal data section, which will avoid the
2947 segfault. However, you won't be able to create an ELFNN binary
2948 with a section named "oc" that needs relocations, but that's
2949 the kind of ugly side-effects you get when detecting section
2950 types based on their names... In practice, this limitation is
2951 unlikely to bite. */
2952 if (strcmp (name, ".reloc") == 0)
2953 hdr->sh_type = SHT_PROGBITS;
2954
b34976b6 2955 return TRUE;
38701953
AM		 2956}
2957
9f03412a
AO		 2958/* _TLS_MODULE_BASE_ needs to be treated especially when linking
2959 executables. Rather than setting it to the beginning of the TLS
2960 section, we have to set it to the end. This function may be called
2961 multiple times, it is idempotent. */
2962
2963static void
eb4ff4d6 2964elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 2965{
4dfe6ac6 2966 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 2967 struct bfd_link_hash_entry *base;
2968
2969 if (!info->executable)
2970 return;
2971
4dfe6ac6
NC		 2972 htab = elf_i386_hash_table (info);
2973 if (htab == NULL)
2974 return;
9f03412a 2975
4dfe6ac6
NC		 2976 base = htab->tls_module_base;
2977 if (base == NULL)
9f03412a
AO		 2978 return;
2979
4dfe6ac6 2980 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 2981}
2982
13ae64f3
JJ		 2983/* Return the base VMA address which should be subtracted from real addresses
2984 when resolving @dtpoff relocation.
2985 This is PT_TLS segment p_vaddr. */
2986
2987static bfd_vma
eb4ff4d6 2988elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 2989{
e1918d23
AM		 2990 /* If tls_sec is NULL, we should have signalled an error already. */
2991 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 2992 return 0;
e1918d23 2993 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 2994}
2995
2996/* Return the relocation value for @tpoff relocation
2997 if STT_TLS virtual address is ADDRESS. */
2998
2999static bfd_vma
eb4ff4d6 3000elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3001{
e1918d23 3002 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3003 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3004 bfd_vma static_tls_size;
13ae64f3 3005
e1918d23
AM		 3006 /* If tls_sec is NULL, we should have signalled an error already. */
3007 if (htab->tls_sec == NULL)
6a30718d 3008 return 0;
7dc98aea
RO		 3009
3010 /* Consider special static TLS alignment requirements. */
3011 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3012 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3013}
3014
252b5132
RH		 3015/* Relocate an i386 ELF section. */
3016
b34976b6 3017static bfd_boolean
55fd94b0
AM		 3018elf_i386_relocate_section (bfd *output_bfd,
3019 struct bfd_link_info *info,
3020 bfd *input_bfd,
3021 asection *input_section,
3022 bfd_byte *contents,
3023 Elf_Internal_Rela *relocs,
3024 Elf_Internal_Sym *local_syms,
3025 asection **local_sections)
252b5132 3026{
6725bdbf 3027 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3028 Elf_Internal_Shdr *symtab_hdr;
3029 struct elf_link_hash_entry **sym_hashes;
3030 bfd_vma *local_got_offsets;
67a4f2b7 3031 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3032 Elf_Internal_Rela *rel;
3033 Elf_Internal_Rela *relend;
3348747a 3034 bfd_boolean is_vxworks_tls;
25e762b9 3035 unsigned plt_entry_size;
252b5132 3036
0ffa91dd 3037 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3038
6725bdbf 3039 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3040 if (htab == NULL)
3041 return FALSE;
0ffa91dd 3042 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3043 sym_hashes = elf_sym_hashes (input_bfd);
3044 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3045 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3046 /* We have to handle relocations in vxworks .tls_vars sections
3047 specially, because the dynamic loader is 'weird'. */
23209a78
RM		 3048 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3049 && info->shared
3348747a
NS		 3050 && !strcmp (input_section->output_section->name,
3051 ".tls_vars"));
252b5132 3052
eb4ff4d6 3053 elf_i386_set_tls_module_base (info);
9f03412a 3054
25e762b9
RM		 3055 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3056
252b5132
RH		 3057 rel = relocs;
3058 relend = relocs + input_section->reloc_count;
3059 for (; rel < relend; rel++)
3060 {
13ae64f3 3061 unsigned int r_type;
252b5132
RH		 3062 reloc_howto_type *howto;
3063 unsigned long r_symndx;
3064 struct elf_link_hash_entry *h;
3065 Elf_Internal_Sym *sym;
3066 asection *sec;
67a4f2b7 3067 bfd_vma off, offplt;
252b5132 3068 bfd_vma relocation;
b34976b6 3069 bfd_boolean unresolved_reloc;
252b5132 3070 bfd_reloc_status_type r;
1b452ec6 3071 unsigned int indx;
13ae64f3 3072 int tls_type;
252b5132
RH		 3073
3074 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3075 if (r_type == R_386_GNU_VTINHERIT
3076 || r_type == R_386_GNU_VTENTRY)
252b5132 3077 continue;
dc47f327 3078
55fd94b0 3079 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3080 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3081 >= R_386_ext - R_386_standard)
3082 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3083 >= R_386_irelative - R_386_ext))
252b5132 3084 {
6ba842b6 3085 (*_bfd_error_handler)
d003868e
AM		 3086 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3087 input_bfd, input_section, r_type);
252b5132 3088 bfd_set_error (bfd_error_bad_value);
b34976b6 3089 return FALSE;
252b5132 3090 }
1b452ec6 3091 howto = elf_howto_table + indx;
252b5132
RH		 3092
3093 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3094 h = NULL;
3095 sym = NULL;
3096 sec = NULL;
b34976b6 3097 unresolved_reloc = FALSE;
252b5132
RH		 3098 if (r_symndx < symtab_hdr->sh_info)
3099 {
3100 sym = local_syms + r_symndx;
3101 sec = local_sections[r_symndx];
3102 relocation = (sec->output_section->vma
3103 + sec->output_offset
3104 + sym->st_value);
ab96bf03
AM		 3105
3106 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3107 && ((sec->flags & SEC_MERGE) != 0
3108 || (info->relocatable
3109 && sec->output_offset != 0)))
f8df10f4 3110 {
f8df10f4 3111 bfd_vma addend;
4a335f3d 3112 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3113
4a335f3d 3114 switch (howto->size)
f8df10f4 3115 {
4a335f3d
AM		 3116 case 0:
3117 addend = bfd_get_8 (input_bfd, where);
3118 if (howto->pc_relative)
3119 {
3120 addend = (addend ^ 0x80) - 0x80;
3121 addend += 1;
3122 }
3123 break;
3124 case 1:
3125 addend = bfd_get_16 (input_bfd, where);
3126 if (howto->pc_relative)
3127 {
3128 addend = (addend ^ 0x8000) - 0x8000;
3129 addend += 2;
3130 }
3131 break;
3132 case 2:
3133 addend = bfd_get_32 (input_bfd, where);
3134 if (howto->pc_relative)
3135 {
3136 addend = (addend ^ 0x80000000) - 0x80000000;
3137 addend += 4;
3138 }
3139 break;
3140 default:
3141 abort ();
f8df10f4
JJ		 3142 }
3143
ab96bf03
AM		 3144 if (info->relocatable)
3145 addend += sec->output_offset;
3146 else
3147 {
3148 asection *msec = sec;
3149 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3150 addend);
3151 addend -= relocation;
3152 addend += msec->output_section->vma + msec->output_offset;
3153 }
4a335f3d
AM		 3154
3155 switch (howto->size)
3156 {
3157 case 0:
16a10388 3158 /* FIXME: overflow checks. */
4a335f3d
AM		 3159 if (howto->pc_relative)
3160 addend -= 1;
3161 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3162 break;
3163 case 1:
3164 if (howto->pc_relative)
3165 addend -= 2;
3166 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3167 break;
3168 case 2:
3169 if (howto->pc_relative)
3170 addend -= 4;
3171 bfd_put_32 (input_bfd, addend, where);
3172 break;
3173 }
f8df10f4 3174 }
1f85278f
L		 3175 else if (!info->relocatable
3176 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3177 {
3178 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3179 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3180 FALSE);
c25bc9fc
L		 3181 if (h == NULL)
3182 abort ();
3183
23209a78 3184 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3185 h->root.u.def.value = sym->st_value;
3186 h->root.u.def.section = sec;
3187 }
252b5132
RH		 3188 }
3189 else
3190 {
3d540e93 3191 bfd_boolean warned ATTRIBUTE_UNUSED;
ffb2e45b 3192
b2a8e766
AM		 3193 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3194 r_symndx, symtab_hdr, sym_hashes,
3195 h, sec, relocation,
3196 unresolved_reloc, warned);
252b5132
RH		 3197 }
3198
ab96bf03 3199 if (sec != NULL && elf_discarded_section (sec))
0672748a
L		 3200 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3201 rel, relend, howto, contents);
9635fe29 3202
ab96bf03
AM		 3203 if (info->relocatable)
3204 continue;
3205
cbe950e9
L		 3206 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3207 it here if it is defined in a non-shared object. */
3208 if (h != NULL
3209 && h->type == STT_GNU_IFUNC
3210 && h->def_regular)
3211 {
3212 asection *plt, *gotplt, *base_got;
3213 bfd_vma plt_index;
4c544807 3214 const char *name;
cbe950e9
L		 3215
3216 if ((input_section->flags & SEC_ALLOC) == 0
3217 || h->plt.offset == (bfd_vma) -1)
3218 abort ();
3219
3220 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3221 if (htab->elf.splt != NULL)
cbe950e9 3222 {
6de2ae4a
L		 3223 plt = htab->elf.splt;
3224 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3225 }
3226 else
3227 {
6de2ae4a
L		 3228 plt = htab->elf.iplt;
3229 gotplt = htab->elf.igotplt;
cbe950e9
L		 3230 }
3231
3232 relocation = (plt->output_section->vma
3233 + plt->output_offset + h->plt.offset);
3234
3235 switch (r_type)
3236 {
3237 default:
4c544807
L		 3238 if (h->root.root.string)
3239 name = h->root.root.string;
3240 else
3241 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3242 NULL);
cbe950e9
L		 3243 (*_bfd_error_handler)
3244 (_("%B: relocation %s against STT_GNU_IFUNC "
3245 "symbol `%s' isn't handled by %s"), input_bfd,
3246 elf_howto_table[r_type].name,
4c544807 3247 name, __FUNCTION__);
cbe950e9
L		 3248 bfd_set_error (bfd_error_bad_value);
3249 return FALSE;
3250
3251 case R_386_32:
710ab287 3252 /* Generate dynamic relcoation only when there is a
c293fa49 3253 non-GOT reference in a shared object. */
710ab287
L		 3254 if (info->shared && h->non_got_ref)
3255 {
3256 Elf_Internal_Rela outrel;
3257 bfd_byte *loc;
3258 asection *sreloc;
3259 bfd_vma offset;
98920172 3260 bfd_boolean relocate;
710ab287 3261
c25bc9fc
L		 3262 /* Need a dynamic relocation to get the real function
3263 adddress. */
710ab287
L		 3264 offset = _bfd_elf_section_offset (output_bfd,
3265 info,
3266 input_section,
3267 rel->r_offset);
3268 if (offset == (bfd_vma) -1
3269 || offset == (bfd_vma) -2)
3270 abort ();
3271
3272 outrel.r_offset = (input_section->output_section->vma
3273 + input_section->output_offset
3274 + offset);
3275
3276 if (h->dynindx == -1
44c4ea11
L		 3277 || h->forced_local
3278 || info->executable)
710ab287
L		 3279 {
3280 /* This symbol is resolved locally. */
98920172
L		 3281 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3282 relocate = TRUE;
710ab287
L		 3283 }
3284 else
98920172
L		 3285 {
3286 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3287 relocate = FALSE;
3288 }
710ab287 3289
6de2ae4a 3290 sreloc = htab->elf.irelifunc;
710ab287
L		 3291 loc = sreloc->contents;
3292 loc += (sreloc->reloc_count++
3293 * sizeof (Elf32_External_Rel));
3294 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3295
3296 /* If this reloc is against an external symbol, we
3297 do not want to fiddle with the addend. Otherwise,
3298 we need to include the symbol value so that it
3299 becomes an addend for the dynamic reloc. For an
3300 internal symbol, we have updated addend. */
98920172
L		 3301 if (! relocate)
3302 continue;
710ab287 3303 }
d59a60e9 3304 /* FALLTHROUGH */
cbe950e9
L		 3305 case R_386_PC32:
3306 case R_386_PLT32:
3307 goto do_relocation;
3308
3309 case R_386_GOT32:
6de2ae4a 3310 base_got = htab->elf.sgot;
cbe950e9
L		 3311 off = h->got.offset;
3312
7afd84dc 3313 if (base_got == NULL)
cbe950e9
L		 3314 abort ();
3315
7afd84dc 3316 if (off == (bfd_vma) -1)
cbe950e9 3317 {
7afd84dc
L		 3318 /* We can't use h->got.offset here to save state, or
3319 even just remember the offset, as finish_dynamic_symbol
3320 would use that as offset into .got. */
6bbec505 3321
6de2ae4a 3322 if (htab->elf.splt != NULL)
7afd84dc 3323 {
25e762b9 3324 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3325 off = (plt_index + 3) * 4;
6de2ae4a 3326 base_got = htab->elf.sgotplt;
7afd84dc 3327 }
cbe950e9
L		 3328 else
3329 {
25e762b9 3330 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3331 off = plt_index * 4;
6de2ae4a 3332 base_got = htab->elf.igotplt;
7afd84dc
L		 3333 }
3334
3335 if (h->dynindx == -1
3336 || h->forced_local
3337 || info->symbolic)
3338 {
3339 /* This references the local defitionion. We must
3340 initialize this entry in the global offset table.
3341 Since the offset must always be a multiple of 8,
3342 we use the least significant bit to record
3343 whether we have initialized it already.
3344
3345 When doing a dynamic link, we create a .rela.got
3346 relocation entry to initialize the value. This
3347 is done in the finish_dynamic_symbol routine. */
3348 if ((off & 1) != 0)
3349 off &= ~1;
3350 else
3351 {
3352 bfd_put_32 (output_bfd, relocation,
3353 base_got->contents + off);
3354 h->got.offset |= 1;
3355 }
cbe950e9 3356 }
cbe950e9 3357
7afd84dc 3358 relocation = off;
cbe950e9 3359
7afd84dc 3360 /* Adjust for static executables. */
6de2ae4a 3361 if (htab->elf.splt == NULL)
7afd84dc
L		 3362 relocation += gotplt->output_offset;
3363 }
3364 else
0018b0a3
L		 3365 {
3366 relocation = (base_got->output_section->vma
3367 + base_got->output_offset + off
3368 - gotplt->output_section->vma
3369 - gotplt->output_offset);
3370 /* Adjust for static executables. */
6de2ae4a 3371 if (htab->elf.splt == NULL)
0018b0a3
L		 3372 relocation += gotplt->output_offset;
3373 }
3374
cbe950e9
L		 3375 goto do_relocation;
3376
3377 case R_386_GOTOFF:
3378 relocation -= (gotplt->output_section->vma
3379 + gotplt->output_offset);
3380 goto do_relocation;
3381 }
3382 }
3383
252b5132
RH		 3384 switch (r_type)
3385 {
3386 case R_386_GOT32:
3387 /* Relocation is to the entry for this symbol in the global
3388 offset table. */
6de2ae4a 3389 if (htab->elf.sgot == NULL)
ffb2e45b 3390 abort ();
252b5132
RH		 3391
3392 if (h != NULL)
3393 {
b34976b6 3394 bfd_boolean dyn;
252b5132
RH		 3395
3396 off = h->got.offset;
ebe50bae 3397 dyn = htab->elf.dynamic_sections_created;
26e41594 3398 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3399 || (info->shared
586119b3 3400 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 3401 || (ELF_ST_VISIBILITY (h->other)
3402 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3403 {
3404 /* This is actually a static link, or it is a
3405 -Bsymbolic link and the symbol is defined
3406 locally, or the symbol was forced to be local
3407 because of a version file. We must initialize
3408 this entry in the global offset table. Since the
3409 offset must always be a multiple of 4, we use the
3410 least significant bit to record whether we have
3411 initialized it already.
3412
3413 When doing a dynamic link, we create a .rel.got
3414 relocation entry to initialize the value. This
3415 is done in the finish_dynamic_symbol routine. */
3416 if ((off & 1) != 0)
3417 off &= ~1;
3418 else
3419 {
3420 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3421 htab->elf.sgot->contents + off);
252b5132
RH		 3422 h->got.offset |= 1;
3423 }
3424 }
8c694914 3425 else
b34976b6 3426 unresolved_reloc = FALSE;
252b5132
RH		 3427 }
3428 else
3429 {
ffb2e45b
AM		 3430 if (local_got_offsets == NULL)
3431 abort ();
252b5132
RH		 3432
3433 off = local_got_offsets[r_symndx];
3434
3435 /* The offset must always be a multiple of 4. We use
83be169b
AM		 3436 the least significant bit to record whether we have
3437 already generated the necessary reloc. */
252b5132
RH		 3438 if ((off & 1) != 0)
3439 off &= ~1;
3440 else
3441 {
6725bdbf 3442 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3443 htab->elf.sgot->contents + off);
252b5132
RH		 3444
3445 if (info->shared)
3446 {
947216bf
AM		 3447 asection *s;
3448 Elf_Internal_Rela outrel;
3449 bfd_byte *loc;
252b5132 3450
6de2ae4a 3451 s = htab->elf.srelgot;
947216bf 3452 if (s == NULL)
ffb2e45b 3453 abort ();
252b5132 3454
6de2ae4a
L		 3455 outrel.r_offset = (htab->elf.sgot->output_section->vma
3456 + htab->elf.sgot->output_offset
252b5132
RH		 3457 + off);
3458 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
947216bf
AM		 3459 loc = s->contents;
3460 loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3461 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 3462 }
3463
3464 local_got_offsets[r_symndx] |= 1;
3465 }
252b5132
RH		 3466 }
3467
ffb2e45b
AM		 3468 if (off >= (bfd_vma) -2)
3469 abort ();
3470
6de2ae4a
L		 3471 relocation = htab->elf.sgot->output_section->vma
3472 + htab->elf.sgot->output_offset + off
3473 - htab->elf.sgotplt->output_section->vma
3474 - htab->elf.sgotplt->output_offset;
252b5132
RH		 3475 break;
3476
3477 case R_386_GOTOFF:
3478 /* Relocation is relative to the start of the global offset
3479 table. */
3480
90f487df
L		 3481 /* Check to make sure it isn't a protected function symbol
3482 for shared library since it may not be local when used
41bed6dd
L		 3483 as function address. We also need to make sure that a
3484 symbol is defined locally. */
3485 if (info->shared && h)
90f487df 3486 {
41bed6dd
L		 3487 if (!h->def_regular)
3488 {
3489 const char *v;
3490
3491 switch (ELF_ST_VISIBILITY (h->other))
3492 {
3493 case STV_HIDDEN:
3494 v = _("hidden symbol");
3495 break;
3496 case STV_INTERNAL:
3497 v = _("internal symbol");
3498 break;
3499 case STV_PROTECTED:
3500 v = _("protected symbol");
3501 break;
3502 default:
3503 v = _("symbol");
3504 break;
3505 }
3506
3507 (*_bfd_error_handler)
3508 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3509 input_bfd, v, h->root.root.string);
3510 bfd_set_error (bfd_error_bad_value);
3511 return FALSE;
3512 }
3513 else if (!info->executable
3514 && h->type == STT_FUNC
3515 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3516 {
3517 (*_bfd_error_handler)
3518 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3519 input_bfd, h->root.root.string);
3520 bfd_set_error (bfd_error_bad_value);
3521 return FALSE;
3522 }
90f487df
L		 3523 }
3524
8c37241b
JJ		 3525 /* Note that sgot is not involved in this
3526 calculation. We always want the start of .got.plt. If we
3527 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 3528 permitted by the ABI, we might have to change this
3529 calculation. */
6de2ae4a
L		 3530 relocation -= htab->elf.sgotplt->output_section->vma
3531 + htab->elf.sgotplt->output_offset;
252b5132
RH		 3532 break;
3533
3534 case R_386_GOTPC:
3535 /* Use global offset table as symbol value. */
6de2ae4a
L		 3536 relocation = htab->elf.sgotplt->output_section->vma
3537 + htab->elf.sgotplt->output_offset;
b34976b6 3538 unresolved_reloc = FALSE;
252b5132
RH		 3539 break;
3540
3541 case R_386_PLT32:
3542 /* Relocation is to the entry for this symbol in the
3543 procedure linkage table. */
3544
dd5724d5 3545 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3546 without using the procedure linkage table. */
252b5132
RH		 3547 if (h == NULL)
3548 break;
3549
dd5724d5 3550 if (h->plt.offset == (bfd_vma) -1
6de2ae4a 3551 || htab->elf.splt == NULL)
252b5132
RH		 3552 {
3553 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 3554 happens when statically linking PIC code, or when
3555 using -Bsymbolic. */
252b5132
RH		 3556 break;
3557 }
3558
6de2ae4a
L		 3559 relocation = (htab->elf.splt->output_section->vma
3560 + htab->elf.splt->output_offset
252b5132 3561 + h->plt.offset);
b34976b6 3562 unresolved_reloc = FALSE;
252b5132
RH		 3563 break;
3564
3565 case R_386_32:
3566 case R_386_PC32:
3348747a
NS		 3567 if ((input_section->flags & SEC_ALLOC) == 0
3568 || is_vxworks_tls)
ec338859
AM		 3569 break;
3570
12d0ee4a 3571 if ((info->shared
ef5aade5
L		 3572 && (h == NULL
3573 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3574 || h->root.type != bfd_link_hash_undefweak)
12d0ee4a 3575 && (r_type != R_386_PC32
f6c52c13 3576 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 3577 || (ELIMINATE_COPY_RELOCS
3578 && !info->shared
12d0ee4a
AM		 3579 && h != NULL
3580 && h->dynindx != -1
f5385ebf
AM		 3581 && !h->non_got_ref
3582 && ((h->def_dynamic
3583 && !h->def_regular)
28d0b90e 3584 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3585 || h->root.type == bfd_link_hash_undefined)))
252b5132 3586 {
947216bf
AM		 3587 Elf_Internal_Rela outrel;
3588 bfd_byte *loc;
b34976b6 3589 bfd_boolean skip, relocate;
0c715baa 3590 asection *sreloc;
252b5132
RH		 3591
3592 /* When generating a shared object, these relocations
3593 are copied into the output file to be resolved at run
3594 time. */
3595
b34976b6
AM		 3596 skip = FALSE;
3597 relocate = FALSE;
252b5132 3598
c629eae0
JJ		 3599 outrel.r_offset =
3600 _bfd_elf_section_offset (output_bfd, info, input_section,
3601 rel->r_offset);
3602 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3603 skip = TRUE;
0bb2d96a 3604 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3605 skip = TRUE, relocate = TRUE;
252b5132
RH		 3606 outrel.r_offset += (input_section->output_section->vma
3607 + input_section->output_offset);
3608
3609 if (skip)
0bb2d96a 3610 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 3611 else if (h != NULL
3612 && h->dynindx != -1
3613 && (r_type == R_386_PC32
3614 || !info->shared
55255dae 3615 || !SYMBOLIC_BIND (info, h)
f5385ebf 3616 || !h->def_regular))
0bb2d96a 3617 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 3618 else
3619 {
5a15f56f 3620 /* This symbol is local, or marked to become local. */
b34976b6 3621 relocate = TRUE;
5a15f56f 3622 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 3623 }
3624
cbe950e9 3625 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3626
62d78908
L		 3627 if (sreloc == NULL || sreloc->contents == NULL)
3628 {
3629 r = bfd_reloc_notsupported;
3630 goto check_relocation_error;
3631 }
0c715baa 3632
947216bf
AM		 3633 loc = sreloc->contents;
3634 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
e7c33416 3635
0c715baa 3636 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 3637
3638 /* If this reloc is against an external symbol, we do
3639 not want to fiddle with the addend. Otherwise, we
3640 need to include the symbol value so that it becomes
3641 an addend for the dynamic reloc. */
0f88be7a 3642 if (! relocate)
252b5132
RH		 3643 continue;
3644 }
252b5132
RH		 3645 break;
3646
37e55690 3647 case R_386_TLS_IE:
1d85728f 3648 if (!info->executable)
37e55690 3649 {
947216bf
AM		 3650 Elf_Internal_Rela outrel;
3651 bfd_byte *loc;
37e55690 3652 asection *sreloc;
37e55690
JJ		 3653
3654 outrel.r_offset = rel->r_offset
3655 + input_section->output_section->vma
3656 + input_section->output_offset;
3657 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3658 sreloc = elf_section_data (input_section)->sreloc;
3659 if (sreloc == NULL)
3660 abort ();
947216bf
AM		 3661 loc = sreloc->contents;
3662 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 3663 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3664 }
3665 /* Fall through */
3666
13ae64f3 3667 case R_386_TLS_GD:
67a4f2b7
AO		 3668 case R_386_TLS_GOTDESC:
3669 case R_386_TLS_DESC_CALL:
13ae64f3 3670 case R_386_TLS_IE_32:
37e55690 3671 case R_386_TLS_GOTIE:
13ae64f3
JJ		 3672 tls_type = GOT_UNKNOWN;
3673 if (h == NULL && local_got_offsets)
3674 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3675 else if (h != NULL)
142411ca 3676 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 3677 if (tls_type == GOT_TLS_IE)
3678 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 3679
3680 if (! elf_i386_tls_transition (info, input_bfd,
3681 input_section, contents,
3682 symtab_hdr, sym_hashes,
3683 &r_type, tls_type, rel,
4c544807 3684 relend, h, r_symndx))
142411ca 3685 return FALSE;
13ae64f3
JJ		 3686
3687 if (r_type == R_386_TLS_LE_32)
3688 {
82e51918 3689 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3690 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3691 {
142411ca 3692 unsigned int type;
13ae64f3
JJ		 3693 bfd_vma roff;
3694
3695 /* GD->LE transition. */
13ae64f3 3696 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 3697 if (type == 0x04)
3698 {
3699 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3700 Change it into:
3701 movl %gs:0, %eax; subl $foo@tpoff, %eax
3702 (6 byte form of subl). */
13ae64f3
JJ		 3703 memcpy (contents + rel->r_offset - 3,
3704 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3705 roff = rel->r_offset + 5;
13ae64f3
JJ		 3706 }
3707 else
3708 {
142411ca
L		 3709 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3710 Change it into:
3711 movl %gs:0, %eax; subl $foo@tpoff, %eax
3712 (6 byte form of subl). */
3713 memcpy (contents + rel->r_offset - 2,
3714 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3715 roff = rel->r_offset + 6;
13ae64f3 3716 }
eb4ff4d6 3717 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3718 contents + roff);
a3fadc9a 3719 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 3720 rel++;
3721 continue;
3722 }
67a4f2b7
AO		 3723 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3724 {
3725 /* GDesc -> LE transition.
3726 It's originally something like:
3727 leal x@tlsdesc(%ebx), %eax
3728
3729 leal x@ntpoff, %eax
3730
3731 Registers other than %eax may be set up here. */
3732
142411ca 3733 unsigned int val;
67a4f2b7
AO		 3734 bfd_vma roff;
3735
67a4f2b7 3736 roff = rel->r_offset;
67a4f2b7 3737 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3738
3739 /* Now modify the instruction as appropriate. */
3740 /* aoliva FIXME: remove the above and xor the byte
3741 below with 0x86. */
3742 bfd_put_8 (output_bfd, val ^ 0x86,
3743 contents + roff - 1);
eb4ff4d6 3744 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 3745 contents + roff);
3746 continue;
3747 }
3748 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3749 {
3750 /* GDesc -> LE transition.
3751 It's originally:
3752 call *(%eax)
3753 Turn it into:
142411ca 3754 xchg %ax,%ax */
67a4f2b7 3755
67a4f2b7 3756 bfd_vma roff;
6bbec505 3757
67a4f2b7 3758 roff = rel->r_offset;
10efb593 3759 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3760 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3761 continue;
3762 }
37e55690 3763 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 3764 {
142411ca 3765 unsigned int val;
13ae64f3
JJ		 3766
3767 /* IE->LE transition:
37e55690
JJ		 3768 Originally it can be one of:
3769 movl foo, %eax
3770 movl foo, %reg
3771 addl foo, %reg
3772 We change it into:
3773 movl $foo, %eax
3774 movl $foo, %reg
3775 addl $foo, %reg. */
37e55690 3776 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 3777 if (val == 0xa1)
3778 {
3779 /* movl foo, %eax. */
55fd94b0
AM		 3780 bfd_put_8 (output_bfd, 0xb8,
3781 contents + rel->r_offset - 1);
37e55690 3782 }
299bf759 3783 else
37e55690 3784 {
142411ca
L		 3785 unsigned int type;
3786
55fd94b0
AM		 3787 type = bfd_get_8 (input_bfd,
3788 contents + rel->r_offset - 2);
299bf759 3789 switch (type)
26e41594 3790 {
299bf759
L		 3791 case 0x8b:
3792 /* movl */
299bf759
L		 3793 bfd_put_8 (output_bfd, 0xc7,
3794 contents + rel->r_offset - 2);
3795 bfd_put_8 (output_bfd,
3796 0xc0 | ((val >> 3) & 7),
3797 contents + rel->r_offset - 1);
3798 break;
3799 case 0x03:
3800 /* addl */
299bf759
L		 3801 bfd_put_8 (output_bfd, 0x81,
3802 contents + rel->r_offset - 2);
3803 bfd_put_8 (output_bfd,
3804 0xc0 | ((val >> 3) & 7),
3805 contents + rel->r_offset - 1);
3806 break;
3807 default:
3808 BFD_FAIL ();
3809 break;
26e41594 3810 }
37e55690 3811 }
eb4ff4d6 3812 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3813 contents + rel->r_offset);
3814 continue;
3815 }
3816 else
3817 {
3818 unsigned int val, type;
3819
3820 /* {IE_32,GOTIE}->LE transition:
3821 Originally it can be one of:
13ae64f3 3822 subl foo(%reg1), %reg2
13ae64f3 3823 movl foo(%reg1), %reg2
37e55690 3824 addl foo(%reg1), %reg2
13ae64f3
JJ		 3825 We change it into:
3826 subl $foo, %reg2
37e55690
JJ		 3827 movl $foo, %reg2 (6 byte form)
3828 addl $foo, %reg2. */
13ae64f3
JJ		 3829 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3830 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 3831 if (type == 0x8b)
3832 {
3833 /* movl */
13ae64f3
JJ		 3834 bfd_put_8 (output_bfd, 0xc7,
3835 contents + rel->r_offset - 2);
3836 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3837 contents + rel->r_offset - 1);
3838 }
3839 else if (type == 0x2b)
3840 {
3841 /* subl */
13ae64f3
JJ		 3842 bfd_put_8 (output_bfd, 0x81,
3843 contents + rel->r_offset - 2);
3844 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3845 contents + rel->r_offset - 1);
3846 }
37e55690
JJ		 3847 else if (type == 0x03)
3848 {
3849 /* addl */
3850 bfd_put_8 (output_bfd, 0x81,
3851 contents + rel->r_offset - 2);
3852 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3853 contents + rel->r_offset - 1);
3854 }
13ae64f3
JJ		 3855 else
3856 BFD_FAIL ();
37e55690 3857 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 3858 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 3859 contents + rel->r_offset);
3860 else
eb4ff4d6 3861 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 3862 contents + rel->r_offset);
13ae64f3
JJ		 3863 continue;
3864 }
3865 }
3866
6de2ae4a 3867 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 3868 abort ();
3869
3870 if (h != NULL)
67a4f2b7
AO		 3871 {
3872 off = h->got.offset;
3873 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
3874 }
13ae64f3
JJ		 3875 else
3876 {
3877 if (local_got_offsets == NULL)
3878 abort ();
3879
3880 off = local_got_offsets[r_symndx];
67a4f2b7 3881 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 3882 }
3883
3884 if ((off & 1) != 0)
3885 off &= ~1;
26e41594 3886 else
13ae64f3 3887 {
947216bf
AM		 3888 Elf_Internal_Rela outrel;
3889 bfd_byte *loc;
91d6fa6a 3890 int dr_type;
67a4f2b7 3891 asection *sreloc;
13ae64f3 3892
6de2ae4a 3893 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 3894 abort ();
3895
67a4f2b7
AO		 3896 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3897
3898 if (GOT_TLS_GDESC_P (tls_type))
3899 {
3900 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
3901 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 3902 <= htab->elf.sgotplt->size);
3903 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3904 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3905 + offplt
3906 + htab->sgotplt_jump_table_size);
6de2ae4a 3907 sreloc = htab->elf.srelplt;
67a4f2b7 3908 loc = sreloc->contents;
5ae0bfb6
RS		 3909 loc += (htab->next_tls_desc_index++
3910 * sizeof (Elf32_External_Rel));
67a4f2b7
AO		 3911 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3912 <= sreloc->contents + sreloc->size);
3913 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3914 if (indx == 0)
3915 {
3916 BFD_ASSERT (! unresolved_reloc);
3917 bfd_put_32 (output_bfd,
eb4ff4d6 3918 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 3919 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 3920 + htab->sgotplt_jump_table_size + 4);
3921 }
3922 else
3923 {
3924 bfd_put_32 (output_bfd, 0,
6de2ae4a 3925 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 3926 + htab->sgotplt_jump_table_size + 4);
3927 }
3928 }
3929
6de2ae4a 3930 sreloc = htab->elf.srelgot;
67a4f2b7 3931
6de2ae4a
L		 3932 outrel.r_offset = (htab->elf.sgot->output_section->vma
3933 + htab->elf.sgot->output_offset + off);
13ae64f3 3934
67a4f2b7 3935 if (GOT_TLS_GD_P (tls_type))
13ae64f3 3936 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 3937 else if (GOT_TLS_GDESC_P (tls_type))
3938 goto dr_done;
37e55690
JJ		 3939 else if (tls_type == GOT_TLS_IE_POS)
3940 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 3941 else
3942 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 3943
37e55690 3944 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 3945 bfd_put_32 (output_bfd,
3946 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 3947 htab->elf.sgot->contents + off);
37e55690 3948 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 3949 bfd_put_32 (output_bfd,
eb4ff4d6 3950 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 3951 htab->elf.sgot->contents + off);
67a4f2b7 3952 else if (dr_type != R_386_TLS_DESC)
c366c25e 3953 bfd_put_32 (output_bfd, 0,
6de2ae4a 3954 htab->elf.sgot->contents + off);
13ae64f3 3955 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7
AO		 3956
3957 loc = sreloc->contents;
3958 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3959 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3960 <= sreloc->contents + sreloc->size);
13ae64f3
JJ		 3961 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3962
67a4f2b7 3963 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 3964 {
3965 if (indx == 0)
3966 {
82e51918 3967 BFD_ASSERT (! unresolved_reloc);
13ae64f3 3968 bfd_put_32 (output_bfd,
eb4ff4d6 3969 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 3970 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 3971 }
3972 else
3973 {
3974 bfd_put_32 (output_bfd, 0,
6de2ae4a 3975 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 3976 outrel.r_info = ELF32_R_INFO (indx,
3977 R_386_TLS_DTPOFF32);
3978 outrel.r_offset += 4;
67a4f2b7 3979 sreloc->reloc_count++;
947216bf 3980 loc += sizeof (Elf32_External_Rel);
67a4f2b7
AO		 3981 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3982 <= sreloc->contents + sreloc->size);
947216bf 3983 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
13ae64f3
JJ		 3984 }
3985 }
37e55690
JJ		 3986 else if (tls_type == GOT_TLS_IE_BOTH)
3987 {
3988 bfd_put_32 (output_bfd,
eb4ff4d6
L		 3989 (indx == 0
3990 ? relocation - elf_i386_dtpoff_base (info)
3991 : 0),
6de2ae4a 3992 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 3993 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3994 outrel.r_offset += 4;
67a4f2b7 3995 sreloc->reloc_count++;
947216bf 3996 loc += sizeof (Elf32_External_Rel);
37e55690
JJ		 3997 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3998 }
13ae64f3 3999
67a4f2b7 4000 dr_done:
13ae64f3
JJ		 4001 if (h != NULL)
4002 h->got.offset |= 1;
4003 else
4004 local_got_offsets[r_symndx] |= 1;
4005 }
4006
67a4f2b7
AO		 4007 if (off >= (bfd_vma) -2
4008 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4009 abort ();
67a4f2b7
AO		 4010 if (r_type == R_386_TLS_GOTDESC
4011 || r_type == R_386_TLS_DESC_CALL)
4012 {
4013 relocation = htab->sgotplt_jump_table_size + offplt;
4014 unresolved_reloc = FALSE;
4015 }
4016 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4017 {
6de2ae4a
L		 4018 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4019 + htab->elf.sgotplt->output_offset;
4020 relocation = htab->elf.sgot->output_section->vma
4021 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4022 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4023 && tls_type == GOT_TLS_IE_BOTH)
4024 relocation += 4;
4025 if (r_type == R_386_TLS_IE)
8c37241b 4026 relocation += g_o_t;
b34976b6 4027 unresolved_reloc = FALSE;
13ae64f3 4028 }
67a4f2b7 4029 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4030 {
4031 unsigned int val, type;
4032 bfd_vma roff;
4033
4034 /* GD->IE transition. */
13ae64f3 4035 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4036 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4037 if (type == 0x04)
4038 {
4039 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4040 Change it into:
4041 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4042 val >>= 3;
142411ca 4043 roff = rel->r_offset - 3;
13ae64f3
JJ		 4044 }
4045 else
4046 {
4047 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4048 Change it into:
4049 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4050 roff = rel->r_offset - 2;
4051 }
4052 memcpy (contents + roff,
4053 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4054 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4055 /* If foo is used only with foo@gotntpoff(%reg) and
4056 foo@indntpoff, but not with foo@gottpoff(%reg), change
4057 subl $foo@gottpoff(%reg), %eax
4058 into:
4059 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4060 if (tls_type == GOT_TLS_IE_POS)
4061 contents[roff + 6] = 0x03;
8c37241b 4062 bfd_put_32 (output_bfd,
6de2ae4a
L		 4063 htab->elf.sgot->output_section->vma
4064 + htab->elf.sgot->output_offset + off
4065 - htab->elf.sgotplt->output_section->vma
4066 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4067 contents + roff + 8);
4068 /* Skip R_386_PLT32. */
4069 rel++;
4070 continue;
4071 }
67a4f2b7
AO		 4072 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4073 {
4074 /* GDesc -> IE transition.
4075 It's originally something like:
4076 leal x@tlsdesc(%ebx), %eax
4077
4078 Change it to:
142411ca 4079 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4080 or:
4081 movl x@gottpoff(%ebx), %eax # before negl %eax
4082
4083 Registers other than %eax may be set up here. */
4084
67a4f2b7
AO		 4085 bfd_vma roff;
4086
4087 /* First, make sure it's a leal adding ebx to a 32-bit
4088 offset into any register, although it's probably
4089 almost always going to be eax. */
4090 roff = rel->r_offset;
67a4f2b7
AO		 4091
4092 /* Now modify the instruction as appropriate. */
4093 /* To turn a leal into a movl in the form we use it, it
4094 suffices to change the first byte from 0x8d to 0x8b.
4095 aoliva FIXME: should we decide to keep the leal, all
4096 we have to do is remove the statement below, and
4097 adjust the relaxation of R_386_TLS_DESC_CALL. */
4098 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4099
4100 if (tls_type == GOT_TLS_IE_BOTH)
4101 off += 4;
4102
4103 bfd_put_32 (output_bfd,
6de2ae4a
L		 4104 htab->elf.sgot->output_section->vma
4105 + htab->elf.sgot->output_offset + off
4106 - htab->elf.sgotplt->output_section->vma
4107 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4108 contents + roff);
4109 continue;
4110 }
4111 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4112 {
4113 /* GDesc -> IE transition.
4114 It's originally:
4115 call *(%eax)
4116
4117 Change it to:
142411ca 4118 xchg %ax,%ax
67a4f2b7
AO		 4119 or
4120 negl %eax
4121 depending on how we transformed the TLS_GOTDESC above.
4122 */
4123
67a4f2b7
AO		 4124 bfd_vma roff;
4125
67a4f2b7 4126 roff = rel->r_offset;
67a4f2b7
AO		 4127
4128 /* Now modify the instruction as appropriate. */
4129 if (tls_type != GOT_TLS_IE_NEG)
4130 {
10efb593
L		 4131 /* xchg %ax,%ax */
4132 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4133 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4134 }
4135 else
4136 {
4137 /* negl %eax */
4138 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4139 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4140 }
4141
4142 continue;
4143 }
4144 else
4145 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4146 break;
4147
4148 case R_386_TLS_LDM:
142411ca
L		 4149 if (! elf_i386_tls_transition (info, input_bfd,
4150 input_section, contents,
4151 symtab_hdr, sym_hashes,
4152 &r_type, GOT_UNKNOWN, rel,
4c544807 4153 relend, h, r_symndx))
142411ca 4154 return FALSE;
13ae64f3 4155
142411ca
L		 4156 if (r_type != R_386_TLS_LDM)
4157 {
13ae64f3 4158 /* LD->LE transition:
13ae64f3
JJ		 4159 leal foo(%reg), %eax; call ___tls_get_addr.
4160 We change it into:
4161 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4162 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4163 memcpy (contents + rel->r_offset - 2,
4164 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4165 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4166 rel++;
4167 continue;
4168 }
4169
6de2ae4a 4170 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4171 abort ();
4172
4173 off = htab->tls_ldm_got.offset;
4174 if (off & 1)
4175 off &= ~1;
4176 else
4177 {
947216bf
AM		 4178 Elf_Internal_Rela outrel;
4179 bfd_byte *loc;
13ae64f3 4180
6de2ae4a 4181 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4182 abort ();
4183
6de2ae4a
L		 4184 outrel.r_offset = (htab->elf.sgot->output_section->vma
4185 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4186
4187 bfd_put_32 (output_bfd, 0,
6de2ae4a 4188 htab->elf.sgot->contents + off);
13ae64f3 4189 bfd_put_32 (output_bfd, 0,
6de2ae4a 4190 htab->elf.sgot->contents + off + 4);
13ae64f3 4191 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
6de2ae4a
L		 4192 loc = htab->elf.srelgot->contents;
4193 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
13ae64f3
JJ		 4194 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4195 htab->tls_ldm_got.offset |= 1;
4196 }
6de2ae4a
L		 4197 relocation = htab->elf.sgot->output_section->vma
4198 + htab->elf.sgot->output_offset + off
4199 - htab->elf.sgotplt->output_section->vma
4200 - htab->elf.sgotplt->output_offset;
b34976b6 4201 unresolved_reloc = FALSE;
13ae64f3
JJ		 4202 break;
4203
4204 case R_386_TLS_LDO_32:
959b0961 4205 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4206 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4207 else
4208 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4209 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4210 break;
4211
4212 case R_386_TLS_LE_32:
13ae64f3 4213 case R_386_TLS_LE:
1d85728f 4214 if (!info->executable)
37e55690 4215 {
947216bf 4216 Elf_Internal_Rela outrel;
37e55690 4217 asection *sreloc;
947216bf 4218 bfd_byte *loc;
37e55690
JJ		 4219
4220 outrel.r_offset = rel->r_offset
4221 + input_section->output_section->vma
4222 + input_section->output_offset;
4223 if (h != NULL && h->dynindx != -1)
4224 indx = h->dynindx;
4225 else
4226 indx = 0;
4227 if (r_type == R_386_TLS_LE_32)
4228 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4229 else
4230 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4231 sreloc = elf_section_data (input_section)->sreloc;
4232 if (sreloc == NULL)
4233 abort ();
947216bf
AM		 4234 loc = sreloc->contents;
4235 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 4236 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4237 if (indx)
4238 continue;
4239 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4240 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4241 else
eb4ff4d6 4242 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4243 }
4244 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4245 relocation = elf_i386_tpoff (info, relocation);
37e55690 4246 else
eb4ff4d6 4247 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4248 break;
4249
252b5132
RH		 4250 default:
4251 break;
4252 }
4253
239e1f3a
AM		 4254 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4255 because such sections are not SEC_ALLOC and thus ld.so will
4256 not process them. */
8c694914 4257 if (unresolved_reloc
239e1f3a 4258 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4259 && h->def_dynamic)
4260 && _bfd_elf_section_offset (output_bfd, info, input_section,
4261 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4262 {
4263 (*_bfd_error_handler)
843fe662 4264 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4265 input_bfd,
4266 input_section,
6a30718d 4267 (long) rel->r_offset,
843fe662 4268 howto->name,
6a30718d 4269 h->root.root.string);
b34976b6 4270 return FALSE;
6a30718d 4271 }
83be169b 4272
cbe950e9 4273do_relocation:
252b5132
RH		 4274 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4275 contents, rel->r_offset,
55fd94b0 4276 relocation, 0);
252b5132 4277
62d78908 4278check_relocation_error:
cf5c0c5b 4279 if (r != bfd_reloc_ok)
252b5132 4280 {
cf5c0c5b 4281 const char *name;
ffb2e45b 4282
cf5c0c5b
AM		 4283 if (h != NULL)
4284 name = h->root.root.string;
4285 else
4286 {
4287 name = bfd_elf_string_from_elf_section (input_bfd,
4288 symtab_hdr->sh_link,
4289 sym->st_name);
4290 if (name == NULL)
b34976b6 4291 return FALSE;
cf5c0c5b
AM		 4292 if (*name == '\0')
4293 name = bfd_section_name (input_bfd, sec);
4294 }
ffb2e45b 4295
cf5c0c5b
AM		 4296 if (r == bfd_reloc_overflow)
4297 {
cf5c0c5b 4298 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4299 (info, (h ? &h->root : NULL), name, howto->name,
4300 (bfd_vma) 0, input_bfd, input_section,
4301 rel->r_offset)))
b34976b6 4302 return FALSE;
cf5c0c5b
AM		 4303 }
4304 else
4305 {
4306 (*_bfd_error_handler)
d003868e
AM		 4307 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4308 input_bfd, input_section,
cf5c0c5b 4309 (long) rel->r_offset, name, (int) r);
b34976b6 4310 return FALSE;
cf5c0c5b 4311 }
252b5132
RH		 4312 }
4313 }
4314
b34976b6 4315 return TRUE;
252b5132
RH		 4316}
4317
4318/* Finish up dynamic symbol handling. We set the contents of various
4319 dynamic sections here. */
4320
b34976b6 4321static bfd_boolean
55fd94b0
AM		 4322elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4323 struct bfd_link_info *info,
4324 struct elf_link_hash_entry *h,
4325 Elf_Internal_Sym *sym)
252b5132 4326{
6725bdbf 4327 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4328 unsigned plt_entry_size;
4329 const struct elf_i386_backend_data *abed;
252b5132 4330
6725bdbf 4331 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4332 if (htab == NULL)
4333 return FALSE;
252b5132 4334
25e762b9
RM		 4335 abed = get_elf_i386_backend_data (output_bfd);
4336 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4337
252b5132
RH		 4338 if (h->plt.offset != (bfd_vma) -1)
4339 {
252b5132
RH		 4340 bfd_vma plt_index;
4341 bfd_vma got_offset;
947216bf
AM		 4342 Elf_Internal_Rela rel;
4343 bfd_byte *loc;
cbe950e9
L		 4344 asection *plt, *gotplt, *relplt;
4345
4346 /* When building a static executable, use .iplt, .igot.plt and
4347 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4348 if (htab->elf.splt != NULL)
cbe950e9 4349 {
6de2ae4a
L		 4350 plt = htab->elf.splt;
4351 gotplt = htab->elf.sgotplt;
4352 relplt = htab->elf.srelplt;
cbe950e9
L		 4353 }
4354 else
4355 {
6de2ae4a
L		 4356 plt = htab->elf.iplt;
4357 gotplt = htab->elf.igotplt;
4358 relplt = htab->elf.irelplt;
cbe950e9 4359 }
252b5132
RH		 4360
4361 /* This symbol has an entry in the procedure linkage table. Set
4362 it up. */
4363
cbe950e9
L		 4364 if ((h->dynindx == -1
4365 && !((h->forced_local || info->executable)
4366 && h->def_regular
4367 && h->type == STT_GNU_IFUNC))
4368 || plt == NULL
4369 || gotplt == NULL
4370 || relplt == NULL)
f6df62c8 4371 return FALSE;
252b5132
RH		 4372
4373 /* Get the index in the procedure linkage table which
4374 corresponds to this symbol. This is the index of this symbol
4375 in all the symbols for which we are making plt entries. The
cbe950e9 4376 first entry in the procedure linkage table is reserved.
252b5132 4377
cbe950e9 4378 Get the offset into the .got table of the entry that
252b5132 4379 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4380 The first three are reserved.
6bbec505 4381
cbe950e9
L		 4382 For static executables, we don't reserve anything. */
4383
6de2ae4a 4384 if (plt == htab->elf.splt)
cbe950e9 4385 {
e1f98742
L		 4386 got_offset = h->plt.offset / plt_entry_size - 1;
4387 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 4388 }
4389 else
4390 {
e1f98742
L		 4391 got_offset = h->plt.offset / plt_entry_size;
4392 got_offset = got_offset * 4;
cbe950e9 4393 }
252b5132
RH		 4394
4395 /* Fill in the entry in the procedure linkage table. */
4396 if (! info->shared)
4397 {
25e762b9
RM		 4398 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4399 abed->plt->plt_entry_size);
252b5132 4400 bfd_put_32 (output_bfd,
cbe950e9
L		 4401 (gotplt->output_section->vma
4402 + gotplt->output_offset
252b5132 4403 + got_offset),
25e762b9
RM		 4404 plt->contents + h->plt.offset
4405 + abed->plt->plt_got_offset);
eac338cf 4406
25e762b9 4407 if (abed->is_vxworks)
eac338cf
PB		 4408 {
4409 int s, k, reloc_index;
4410
4411 /* Create the R_386_32 relocation referencing the GOT
4412 for this PLT entry. */
4413
4414 /* S: Current slot number (zero-based). */
25e762b9
RM		 4415 s = ((h->plt.offset - abed->plt->plt_entry_size)
4416 / abed->plt->plt_entry_size);
eac338cf
PB		 4417 /* K: Number of relocations for PLTResolve. */
4418 if (info->shared)
4419 k = PLTRESOLVE_RELOCS_SHLIB;
4420 else
4421 k = PLTRESOLVE_RELOCS;
4422 /* Skip the PLTresolve relocations, and the relocations for
4423 the other PLT slots. */
4424 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4425 loc = (htab->srelplt2->contents + reloc_index
4426 * sizeof (Elf32_External_Rel));
4427
6de2ae4a
L		 4428 rel.r_offset = (htab->elf.splt->output_section->vma
4429 + htab->elf.splt->output_offset
eac338cf 4430 + h->plt.offset + 2),
7325306f 4431 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4432 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4433
4434 /* Create the R_386_32 relocation referencing the beginning of
4435 the PLT for this GOT entry. */
6de2ae4a
L		 4436 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4437 + htab->elf.sgotplt->output_offset
eac338cf 4438 + got_offset);
7325306f 4439 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4440 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4441 loc + sizeof (Elf32_External_Rel));
4442 }
252b5132
RH		 4443 }
4444 else
4445 {
25e762b9
RM		 4446 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4447 abed->plt->plt_entry_size);
252b5132 4448 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 4449 plt->contents + h->plt.offset
4450 + abed->plt->plt_got_offset);
252b5132
RH		 4451 }
4452
252b5132
RH		 4453 /* Fill in the entry in the global offset table. */
4454 bfd_put_32 (output_bfd,
cbe950e9
L		 4455 (plt->output_section->vma
4456 + plt->output_offset
252b5132 4457 + h->plt.offset
25e762b9 4458 + abed->plt->plt_lazy_offset),
cbe950e9 4459 gotplt->contents + got_offset);
252b5132
RH		 4460
4461 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 4462 rel.r_offset = (gotplt->output_section->vma
4463 + gotplt->output_offset
252b5132 4464 + got_offset);
cbe950e9
L		 4465 if (h->dynindx == -1
4466 || ((info->executable
4467 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4468 && h->def_regular
4469 && h->type == STT_GNU_IFUNC))
4470 {
4471 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4472 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4473 in the .got.plt section. */
4474 bfd_put_32 (output_bfd,
23209a78 4475 (h->root.u.def.value
cbe950e9
L		 4476 + h->root.u.def.section->output_section->vma
4477 + h->root.u.def.section->output_offset),
4478 gotplt->contents + got_offset);
4479 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 4480 /* R_386_IRELATIVE comes last. */
4481 plt_index = htab->next_irelative_index--;
cbe950e9
L		 4482 }
4483 else
e1f98742
L		 4484 {
4485 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4486 plt_index = htab->next_jump_slot_index++;
4487 }
cbe950e9 4488 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4489 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4490
e1f98742
L		 4491 /* Don't fill PLT entry for static executables. */
4492 if (plt == htab->elf.splt)
4493 {
4494 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4495 plt->contents + h->plt.offset
4496 + abed->plt->plt_reloc_offset);
4497 bfd_put_32 (output_bfd, - (h->plt.offset
4498 + abed->plt->plt_plt_offset + 4),
4499 plt->contents + h->plt.offset
4500 + abed->plt->plt_plt_offset);
4501 }
4502
f5385ebf 4503 if (!h->def_regular)
252b5132
RH		 4504 {
4505 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 4506 the .plt section. Leave the value if there were any
4507 relocations where pointer equality matters (this is a clue
51b64d56
AM		 4508 for the dynamic linker, to make function pointer
4509 comparisons work between an application and shared
c6585bbb
JJ		 4510 library), otherwise set it to zero. If a function is only
4511 called from a binary, there is no need to slow down
4512 shared libraries because of that. */
252b5132 4513 sym->st_shndx = SHN_UNDEF;
f5385ebf 4514 if (!h->pointer_equality_needed)
c6585bbb 4515 sym->st_value = 0;
252b5132
RH		 4516 }
4517 }
4518
13ae64f3 4519 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4520 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4521 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4522 {
947216bf
AM		 4523 Elf_Internal_Rela rel;
4524 bfd_byte *loc;
252b5132
RH		 4525
4526 /* This symbol has an entry in the global offset table. Set it
4527 up. */
4528
6de2ae4a 4529 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4530 abort ();
252b5132 4531
6de2ae4a
L		 4532 rel.r_offset = (htab->elf.sgot->output_section->vma
4533 + htab->elf.sgot->output_offset
dc810e39 4534 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4535
dd5724d5
AM		 4536 /* If this is a static link, or it is a -Bsymbolic link and the
4537 symbol is defined locally or was forced to be local because
4538 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 4539 The entry in the global offset table will already have been
4540 initialized in the relocate_section function. */
710ab287 4541 if (h->def_regular
0018b0a3
L		 4542 && h->type == STT_GNU_IFUNC)
4543 {
710ab287
L		 4544 if (info->shared)
4545 {
4546 /* Generate R_386_GLOB_DAT. */
4547 goto do_glob_dat;
4548 }
4549 else
4550 {
cd2b2c10
L		 4551 asection *plt;
4552
710ab287
L		 4553 if (!h->pointer_equality_needed)
4554 abort ();
4555
4556 /* For non-shared object, we can't use .got.plt, which
4557 contains the real function addres if we need pointer
4558 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4559 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 4560 bfd_put_32 (output_bfd,
4561 (plt->output_section->vma
4562 + plt->output_offset + h->plt.offset),
6de2ae4a 4563 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4564 return TRUE;
4565 }
0018b0a3
L		 4566 }
4567 else if (info->shared
4568 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4569 {
6725bdbf 4570 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 4571 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4572 }
252b5132
RH		 4573 else
4574 {
dd5724d5 4575 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4576do_glob_dat:
6725bdbf 4577 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4578 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 4579 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4580 }
4581
6de2ae4a
L		 4582 loc = htab->elf.srelgot->contents;
4583 loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 4584 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 4585 }
4586
f5385ebf 4587 if (h->needs_copy)
252b5132 4588 {
947216bf
AM		 4589 Elf_Internal_Rela rel;
4590 bfd_byte *loc;
252b5132
RH		 4591
4592 /* This symbol needs a copy reloc. Set it up. */
4593
ffb2e45b
AM		 4594 if (h->dynindx == -1
4595 || (h->root.type != bfd_link_hash_defined
4596 && h->root.type != bfd_link_hash_defweak)
4597 || htab->srelbss == NULL)
4598 abort ();
252b5132
RH		 4599
4600 rel.r_offset = (h->root.u.def.value
4601 + h->root.u.def.section->output_section->vma
4602 + h->root.u.def.section->output_offset);
4603 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
947216bf
AM		 4604 loc = htab->srelbss->contents;
4605 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 4606 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 4607 }
4608
c25bc9fc
L		 4609 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
4610 be NULL for local symbols.
4611
eac338cf
PB		 4612 On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it
4613 is relative to the ".got" section. */
c25bc9fc
L		 4614 if (sym != NULL
4615 && (strcmp (h->root.root.string, "_DYNAMIC") == 0
25e762b9 4616 || (!abed->is_vxworks
23209a78 4617 && h == htab->elf.hgot)))
252b5132
RH		 4618 sym->st_shndx = SHN_ABS;
4619
b34976b6 4620 return TRUE;
252b5132
RH		 4621}
4622
c25bc9fc
L		 4623/* Finish up local dynamic symbol handling. We set the contents of
4624 various dynamic sections here. */
4625
4626static bfd_boolean
4627elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4628{
4629 struct elf_link_hash_entry *h
4630 = (struct elf_link_hash_entry *) *slot;
4631 struct bfd_link_info *info
23209a78 4632 = (struct bfd_link_info *) inf;
c25bc9fc
L		 4633
4634 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4635 h, NULL);
4636}
4637
38701953
AM		 4638/* Used to decide how to sort relocs in an optimal manner for the
4639 dynamic linker, before writing them out. */
4640
4641static enum elf_reloc_type_class
55fd94b0 4642elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
38701953 4643{
55fd94b0 4644 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 4645 {
4646 case R_386_RELATIVE:
4647 return reloc_class_relative;
4648 case R_386_JUMP_SLOT:
4649 return reloc_class_plt;
4650 case R_386_COPY:
4651 return reloc_class_copy;
4652 default:
4653 return reloc_class_normal;
4654 }
4655}
4656
252b5132
RH		 4657/* Finish up the dynamic sections. */
4658
b34976b6 4659static bfd_boolean
55fd94b0
AM		 4660elf_i386_finish_dynamic_sections (bfd *output_bfd,
4661 struct bfd_link_info *info)
252b5132 4662{
6725bdbf 4663 struct elf_i386_link_hash_table *htab;
252b5132 4664 bfd *dynobj;
252b5132 4665 asection *sdyn;
25e762b9 4666 const struct elf_i386_backend_data *abed;
252b5132 4667
6725bdbf 4668 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4669 if (htab == NULL)
4670 return FALSE;
4671
ebe50bae 4672 dynobj = htab->elf.dynobj;
252b5132 4673 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
25e762b9 4674 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4675
ebe50bae 4676 if (htab->elf.dynamic_sections_created)
252b5132 4677 {
252b5132
RH		 4678 Elf32_External_Dyn *dyncon, *dynconend;
4679
6de2ae4a 4680 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4681 abort ();
252b5132
RH		 4682
4683 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4684 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 4685 for (; dyncon < dynconend; dyncon++)
4686 {
4687 Elf_Internal_Dyn dyn;
51b64d56 4688 asection *s;
252b5132
RH		 4689
4690 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4691
4692 switch (dyn.d_tag)
4693 {
4694 default:
25e762b9
RM		 4695 if (abed->is_vxworks
4696 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 4697 break;
0ac8d2ca 4698 continue;
252b5132
RH		 4699
4700 case DT_PLTGOT:
6de2ae4a 4701 s = htab->elf.sgotplt;
8c37241b 4702 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 4703 break;
4704
252b5132 4705 case DT_JMPREL:
6de2ae4a 4706 s = htab->elf.srelplt;
6348e046 4707 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 4708 break;
4709
4710 case DT_PLTRELSZ:
6de2ae4a 4711 s = htab->elf.srelplt;
eea6121a 4712 dyn.d_un.d_val = s->size;
252b5132
RH		 4713 break;
4714
4715 case DT_RELSZ:
4716 /* My reading of the SVR4 ABI indicates that the
4717 procedure linkage table relocs (DT_JMPREL) should be
4718 included in the overall relocs (DT_REL). This is
4719 what Solaris does. However, UnixWare can not handle
4720 that case. Therefore, we override the DT_RELSZ entry
6348e046 4721 here to make it not include the JMPREL relocs. */
6de2ae4a 4722 s = htab->elf.srelplt;
6348e046
AM		 4723 if (s == NULL)
4724 continue;
eea6121a 4725 dyn.d_un.d_val -= s->size;
6348e046
AM		 4726 break;
4727
4728 case DT_REL:
4729 /* We may not be using the standard ELF linker script.
4730 If .rel.plt is the first .rel section, we adjust
4731 DT_REL to not include it. */
6de2ae4a 4732 s = htab->elf.srelplt;
6348e046
AM		 4733 if (s == NULL)
4734 continue;
4735 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4736 continue;
eea6121a 4737 dyn.d_un.d_ptr += s->size;
252b5132
RH		 4738 break;
4739 }
0ac8d2ca
AM		 4740
4741 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 4742 }
4743
4744 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 4745 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH		 4746 {
4747 if (info->shared)
eac338cf 4748 {
25e762b9
RM		 4749 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
4750 abed->plt->plt0_entry_size);
4751 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4752 abed->plt0_pad_byte,
4753 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 4754 }
252b5132
RH		 4755 else
4756 {
25e762b9
RM		 4757 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
4758 abed->plt->plt0_entry_size);
4759 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4760 abed->plt0_pad_byte,
4761 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 4762 bfd_put_32 (output_bfd,
6de2ae4a
L		 4763 (htab->elf.sgotplt->output_section->vma
4764 + htab->elf.sgotplt->output_offset
6725bdbf 4765 + 4),
25e762b9
RM		 4766 htab->elf.splt->contents
4767 + abed->plt->plt0_got1_offset);
252b5132 4768 bfd_put_32 (output_bfd,
6de2ae4a
L		 4769 (htab->elf.sgotplt->output_section->vma
4770 + htab->elf.sgotplt->output_offset
6725bdbf 4771 + 8),
25e762b9
RM		 4772 htab->elf.splt->contents
4773 + abed->plt->plt0_got2_offset);
eac338cf 4774
25e762b9 4775 if (abed->is_vxworks)
eac338cf
PB		 4776 {
4777 Elf_Internal_Rela rel;
7325306f 4778
eac338cf
PB		 4779 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4780 On IA32 we use REL relocations so the addend goes in
4781 the PLT directly. */
6de2ae4a
L		 4782 rel.r_offset = (htab->elf.splt->output_section->vma
4783 + htab->elf.splt->output_offset
25e762b9 4784 + abed->plt->plt0_got1_offset);
7325306f 4785 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4786 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4787 htab->srelplt2->contents);
4788 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 4789 rel.r_offset = (htab->elf.splt->output_section->vma
4790 + htab->elf.splt->output_offset
25e762b9 4791 + abed->plt->plt0_got2_offset);
7325306f 4792 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4793 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4794 htab->srelplt2->contents +
4795 sizeof (Elf32_External_Rel));
4796 }
252b5132
RH		 4797 }
4798
4799 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4800 really seem like the right value. */
6de2ae4a 4801 elf_section_data (htab->elf.splt->output_section)
6725bdbf 4802 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 4803
4804 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 4805 if (abed->is_vxworks && !info->shared)
eac338cf 4806 {
25e762b9
RM		 4807 int num_plts = (htab->elf.splt->size
4808 / abed->plt->plt_entry_size) - 1;
4c9b0de6 4809 unsigned char *p;
eac338cf
PB		 4810
4811 p = htab->srelplt2->contents;
4812 if (info->shared)
4813 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4814 else
4815 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4816
4817 for (; num_plts; num_plts--)
4818 {
4819 Elf_Internal_Rela rel;
4820 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4821 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 4822 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4823 p += sizeof (Elf32_External_Rel);
4824
4825 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4826 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 4827 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4828 p += sizeof (Elf32_External_Rel);
4829 }
4830 }
252b5132
RH		 4831 }
4832 }
4833
6de2ae4a 4834 if (htab->elf.sgotplt)
252b5132 4835 {
56d4289c
L		 4836 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4837 {
4838 (*_bfd_error_handler)
4839 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4840 return FALSE;
4841 }
4842
12d0ee4a 4843 /* Fill in the first three entries in the global offset table. */
6de2ae4a 4844 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 4845 {
4846 bfd_put_32 (output_bfd,
55fd94b0 4847 (sdyn == NULL ? 0
12d0ee4a 4848 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 4849 htab->elf.sgotplt->contents);
4850 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4851 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 4852 }
252b5132 4853
6de2ae4a 4854 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 4855 }
8c37241b 4856
e41b3a13
JJ		 4857 /* Adjust .eh_frame for .plt section. */
4858 if (htab->plt_eh_frame != NULL)
4859 {
4860 if (htab->elf.splt != NULL
4861 && htab->elf.splt->size != 0
4862 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
4863 && htab->elf.splt->output_section != NULL
4864 && htab->plt_eh_frame->output_section != NULL)
4865 {
4866 bfd_vma plt_start = htab->elf.splt->output_section->vma;
4867 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
4868 + htab->plt_eh_frame->output_offset
4869 + PLT_FDE_START_OFFSET;
4870 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4871 htab->plt_eh_frame->contents
4872 + PLT_FDE_START_OFFSET);
4873 }
4874 if (htab->plt_eh_frame->sec_info_type
4875 == ELF_INFO_TYPE_EH_FRAME)
4876 {
4877 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4878 htab->plt_eh_frame,
4879 htab->plt_eh_frame->contents))
4880 return FALSE;
4881 }
4882 }
4883
6de2ae4a
L		 4884 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4885 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 4886
c25bc9fc
L		 4887 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4888 htab_traverse (htab->loc_hash_table,
4889 elf_i386_finish_local_dynamic_symbol,
4890 info);
4891
b34976b6 4892 return TRUE;
252b5132
RH		 4893}
4894
4c45e5c9
JJ		 4895/* Return address for Ith PLT stub in section PLT, for relocation REL
4896 or (bfd_vma) -1 if it should not be included. */
4897
4898static bfd_vma
4899elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
4900 const arelent *rel ATTRIBUTE_UNUSED)
4901{
25e762b9 4902 return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
4c45e5c9
JJ		 4903}
4904
fdc90cb4
JJ		 4905/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
4906
4907static bfd_boolean
4908elf_i386_hash_symbol (struct elf_link_hash_entry *h)
4909{
4910 if (h->plt.offset != (bfd_vma) -1
4911 && !h->def_regular
4912 && !h->pointer_equality_needed)
4913 return FALSE;
4914
4915 return _bfd_elf_hash_symbol (h);
4916}
4c45e5c9 4917
d8045f23
NC		 4918/* Hook called by the linker routine which adds symbols from an object
4919 file. */
4920
4921static bfd_boolean
c16153ae 4922elf_i386_add_symbol_hook (bfd * abfd,
d8045f23
NC		 4923 struct bfd_link_info * info ATTRIBUTE_UNUSED,
4924 Elf_Internal_Sym * sym,
4925 const char ** namep ATTRIBUTE_UNUSED,
4926 flagword * flagsp ATTRIBUTE_UNUSED,
4927 asection ** secp ATTRIBUTE_UNUSED,
4928 bfd_vma * valp ATTRIBUTE_UNUSED)
4929{
c16153ae 4930 if ((abfd->flags & DYNAMIC) == 0
f64b2e8d
NC		 4931 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
4932 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
4933 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC		 4934
4935 return TRUE;
4936}
4937
252b5132
RH		 4938#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
4939#define TARGET_LITTLE_NAME "elf32-i386"
4940#define ELF_ARCH bfd_arch_i386
ae95ffa6 4941#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 4942#define ELF_MACHINE_CODE EM_386
4943#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 4944
4945#define elf_backend_can_gc_sections 1
51b64d56 4946#define elf_backend_can_refcount 1
252b5132
RH		 4947#define elf_backend_want_got_plt 1
4948#define elf_backend_plt_readonly 1
4949#define elf_backend_want_plt_sym 0
4950#define elf_backend_got_header_size 12
e41b3a13 4951#define elf_backend_plt_alignment 4
252b5132 4952
8c29f035
AM		 4953/* Support RELA for objdump of prelink objects. */
4954#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 4955#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
4956
13ae64f3 4957#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 4958
dd5724d5
AM		 4959#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
4960#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
c25bc9fc 4961#define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
dd5724d5 4962#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 4963#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM		 4964
4965#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 4966#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 4967#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 4968#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 4969#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 4970#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 4971#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
4972#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
4973#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
4974#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 4975#define elf_backend_grok_prstatus elf_i386_grok_prstatus
4976#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 4977#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 4978#define elf_backend_relocate_section elf_i386_relocate_section
4979#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 4980#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 4981#define elf_backend_omit_section_dynsym \
4982 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 4983#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 4984#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23
NC		 4985#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
4986#undef elf_backend_post_process_headers
4987#define elf_backend_post_process_headers _bfd_elf_set_osabi
dd5724d5 4988
252b5132 4989#include "elf32-target.h"
2bc3c89a
AM		 4990
4991/* FreeBSD support. */
4992
4993#undef TARGET_LITTLE_SYM
4994#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
4995#undef TARGET_LITTLE_NAME
4996#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 4997#undef ELF_OSABI
4998#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 4999
5000/* The kernel recognizes executables as valid only if they carry a
5001 "FreeBSD" label in the ELF header. So we put this label on all
5002 executables and (for simplicity) also all other object files. */
5003
2bc3c89a 5004static void
d8045f23 5005elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5006{
d8045f23 5007 _bfd_elf_set_osabi (abfd, info);
2bc3c89a 5008
2bc3c89a
AM		 5009#ifdef OLD_FREEBSD_ABI_LABEL
5010 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5011 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 5012#endif
2bc3c89a
AM		 5013}
5014
5015#undef elf_backend_post_process_headers
d8045f23 5016#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5017#undef elf32_bed
5018#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5019
d8045f23
NC		 5020#undef elf_backend_add_symbol_hook
5021
2bc3c89a 5022#include "elf32-target.h"
eac338cf 5023
a6cc6b3b
RO		 5024/* Solaris 2. */
5025
5026#undef TARGET_LITTLE_SYM
5027#define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec
5028#undef TARGET_LITTLE_NAME
5029#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5030
5031/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5032 objects won't be recognized. */
5033#undef ELF_OSABI
5034
5035#undef elf32_bed
5036#define elf32_bed elf32_i386_sol2_bed
5037
7dc98aea
RO		 5038/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5039 boundary. */
5040#undef elf_backend_static_tls_alignment
5041#define elf_backend_static_tls_alignment 8
5042
a6cc6b3b
RO		 5043/* The Solaris 2 ABI requires a plt symbol on all platforms.
5044
5045 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5046 File, p.63. */
5047#undef elf_backend_want_plt_sym
5048#define elf_backend_want_plt_sym 1
5049
5050#include "elf32-target.h"
5051
a27e4371
RM		 5052/* Native Client support. */
5053
5054#undef TARGET_LITTLE_SYM
5055#define TARGET_LITTLE_SYM bfd_elf32_i386_nacl_vec
5056#undef TARGET_LITTLE_NAME
5057#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5058#undef elf32_bed
5059#define elf32_bed elf32_i386_nacl_bed
5060
5061#undef ELF_MAXPAGESIZE
5062#define ELF_MAXPAGESIZE 0x10000
5063
5064/* Restore defaults. */
5065#undef ELF_OSABI
5066#undef elf_backend_want_plt_sym
5067#define elf_backend_want_plt_sym 0
5068#undef elf_backend_post_process_headers
5069#define elf_backend_post_process_headers _bfd_elf_set_osabi
5070#undef elf_backend_static_tls_alignment
5071
5072/* NaCl uses substantially different PLT entries for the same effects. */
5073
5074#undef elf_backend_plt_alignment
5075#define elf_backend_plt_alignment 5
5076#define NACL_PLT_ENTRY_SIZE 64
5077#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5078
5079static const bfd_byte elf_i386_nacl_plt0_entry[] =
5080 {
5081 0xff, 0x35, /* pushl contents of address */
5082 0, 0, 0, 0, /* replaced with address of .got + 4. */
5083 0x8b, 0x0d, /* movl contents of address, %ecx */
5084 0, 0, 0, 0, /* replaced with address of .got + 8. */
5085 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5086 0xff, 0xe1 /* jmp *%ecx */
5087 };
5088
5089static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5090 {
5091 0x8b, 0x0d, /* movl contents of address, %ecx */
5092 0, 0, 0, 0, /* replaced with GOT slot address. */
5093 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5094 0xff, 0xe1, /* jmp *%ecx */
5095
5096 /* Pad to the next 32-byte boundary with nop instructions. */
5097 0x90,
5098 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5099 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5100
5101 /* Lazy GOT entries point here (32-byte aligned). */
5102 0x68, /* pushl immediate */
5103 0, 0, 0, 0, /* replaced with reloc offset. */
5104 0xe9, /* jmp relative */
5105 0, 0, 0, 0, /* replaced with offset to .plt. */
5106
5107 /* Pad to the next 32-byte boundary with nop instructions. */
5108 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5109 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5110 0x90, 0x90
5111 };
5112
5113static const bfd_byte
5114elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5115 {
5116 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5117 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5118 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5119 0xff, 0xe1, /* jmp *%ecx */
5120 0x90 /* nop */
5121 };
5122
5123static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5124 {
5125 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5126 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5127 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5128 0xff, 0xe1, /* jmp *%ecx */
5129
5130 /* Pad to the next 32-byte boundary with nop instructions. */
5131 0x90,
5132 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5133 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5134
5135 /* Lazy GOT entries point here (32-byte aligned). */
5136 0x68, /* pushl immediate */
5137 0, 0, 0, 0, /* replaced with offset into relocation table. */
5138 0xe9, /* jmp relative */
5139 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5140
5141 /* Pad to the next 32-byte boundary with nop instructions. */
5142 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5143 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5144 0x90, 0x90
5145 };
5146
5147static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5148 {
5149#if (PLT_CIE_LENGTH != 20 \
5150 || PLT_FDE_LENGTH != 36 \
5151 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5152 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5153# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5154#endif
5155 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5156 0, 0, 0, 0, /* CIE ID */
5157 1, /* CIE version */
5158 'z', 'R', 0, /* Augmentation string */
5159 1, /* Code alignment factor */
5160 0x7c, /* Data alignment factor: -4 */
5161 8, /* Return address column */
5162 1, /* Augmentation size */
5163 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5164 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5165 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5166 DW_CFA_nop, DW_CFA_nop,
5167
5168 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5169 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5170 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5171 0, 0, 0, 0, /* .plt size goes here */
5172 0, /* Augmentation size */
5173 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5174 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5175 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5176 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5177 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5178 13, /* Block length */
5179 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5180 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5181 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5182 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5183 DW_CFA_nop, DW_CFA_nop
5184 };
5185
5186static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5187 {
5188 elf_i386_nacl_plt0_entry, /* plt0_entry */
5189 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5190 2, /* plt0_got1_offset */
5191 8, /* plt0_got2_offset */
5192 elf_i386_nacl_plt_entry, /* plt_entry */
5193 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5194 2, /* plt_got_offset */
5195 33, /* plt_reloc_offset */
5196 38, /* plt_plt_offset */
5197 32, /* plt_lazy_offset */
5198 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5199 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5200 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5201 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5202 };
5203
5204static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5205 {
5206 &elf_i386_nacl_plt, /* plt */
5207 0x90, /* plt0_pad_byte: nop insn */
5208 0, /* is_vxworks */
5209 };
5210
5211#undef elf_backend_arch_data
5212#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5213
5214#include "elf32-target.h"
5215
eac338cf
PB		 5216/* VxWorks support. */
5217
5218#undef TARGET_LITTLE_SYM
5219#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
5220#undef TARGET_LITTLE_NAME
5221#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5222#undef ELF_OSABI
a27e4371
RM		 5223#undef elf_backend_plt_alignment
5224#define elf_backend_plt_alignment 4
eac338cf 5225
23209a78
RM		 5226static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5227 {
25e762b9 5228 &elf_i386_plt, /* plt */
23209a78
RM		 5229 0x90, /* plt0_pad_byte */
5230 1, /* is_vxworks */
5231 };
eac338cf 5232
23209a78
RM		 5233#undef elf_backend_arch_data
5234#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5235
13285a1b
AM		 5236#undef elf_backend_relocs_compatible
5237#undef elf_backend_post_process_headers
eac338cf
PB		 5238#undef elf_backend_add_symbol_hook
5239#define elf_backend_add_symbol_hook \
5240 elf_vxworks_add_symbol_hook
5241#undef elf_backend_link_output_symbol_hook
5242#define elf_backend_link_output_symbol_hook \
9c72ff84 5243 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 5244#undef elf_backend_emit_relocs
5245#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5246#undef elf_backend_final_write_processing
5247#define elf_backend_final_write_processing \
5248 elf_vxworks_final_write_processing
7dc98aea 5249#undef elf_backend_static_tls_alignment
eac338cf
PB		 5250
5251/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5252 define it. */
5253#undef elf_backend_want_plt_sym
5254#define elf_backend_want_plt_sym 1
5255
5256#undef elf32_bed
5257#define elf32_bed elf32_i386_vxworks_bed
5258
5259#include "elf32-target.h"
GDB Binutils - Deliverables
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