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Add support for Thumb-2 long branch veneers
[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
6f2750fe 2 Copyright (C) 1993-2016 Free Software Foundation, Inc.
252b5132 3
571fe01f 4 This file is part of BFD, the Binary File Descriptor library.
252b5132 5
571fe01f
NC		 6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
cd123cb7 8 the Free Software Foundation; either version 3 of the License, or
571fe01f 9 (at your option) any later version.
252b5132 10
571fe01f
NC		 11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
252b5132 15
571fe01f
NC		 16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
cd123cb7
NC		 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
252b5132 20
252b5132 21#include "sysdep.h"
3db64b00 22#include "bfd.h"
252b5132
RH		 23#include "bfdlink.h"
24#include "libbfd.h"
25#include "elf-bfd.h"
5a68afcf 26#include "elf-nacl.h"
eac338cf 27#include "elf-vxworks.h"
142411ca 28#include "bfd_stdint.h"
c25bc9fc
L		 29#include "objalloc.h"
30#include "hashtab.h"
e41b3a13 31#include "dwarf2.h"
02a86693 32#include "opcode/i386.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{
6346d5ca 41 HOWTO(R_386_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
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),
1788fc08
L		 135 HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
136 bfd_elf_generic_reloc, "R_386_SIZE32",
137 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 138 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
139 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
140 TRUE, 0xffffffff, 0xffffffff, FALSE),
141 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
142 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
143 FALSE, 0, 0, FALSE),
144 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
145 bfd_elf_generic_reloc, "R_386_TLS_DESC",
146 TRUE, 0xffffffff, 0xffffffff, FALSE),
cbe950e9
L		 147 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_386_IRELATIVE",
149 TRUE, 0xffffffff, 0xffffffff, FALSE),
02a86693
L		 150 HOWTO(R_386_GOT32X, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_386_GOT32X",
152 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 153
154 /* Another gap. */
02a86693 155#define R_386_ext2 (R_386_GOT32X + 1 - R_386_tls_offset)
c74be520 156#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_ext2)
252b5132
RH		 157
158/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 159 HOWTO (R_386_GNU_VTINHERIT, /* type */
160 0, /* rightshift */
161 2, /* size (0 = byte, 1 = short, 2 = long) */
162 0, /* bitsize */
b34976b6 163 FALSE, /* pc_relative */
252b5132
RH		 164 0, /* bitpos */
165 complain_overflow_dont, /* complain_on_overflow */
166 NULL, /* special_function */
167 "R_386_GNU_VTINHERIT", /* name */
b34976b6 168 FALSE, /* partial_inplace */
252b5132
RH		 169 0, /* src_mask */
170 0, /* dst_mask */
b34976b6 171 FALSE), /* pcrel_offset */
252b5132
RH		 172
173/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 174 HOWTO (R_386_GNU_VTENTRY, /* type */
175 0, /* rightshift */
176 2, /* size (0 = byte, 1 = short, 2 = long) */
177 0, /* bitsize */
b34976b6 178 FALSE, /* pc_relative */
252b5132
RH		 179 0, /* bitpos */
180 complain_overflow_dont, /* complain_on_overflow */
181 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
182 "R_386_GNU_VTENTRY", /* name */
b34976b6 183 FALSE, /* partial_inplace */
252b5132
RH		 184 0, /* src_mask */
185 0, /* dst_mask */
b34976b6 186 FALSE) /* pcrel_offset */
dc47f327 187
55fd94b0 188#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 189
190};
191
252b5132 192#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 193#define TRACE(str) \
194 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 195#else
196#define TRACE(str)
197#endif
198
199static reloc_howto_type *
55fd94b0
AM		 200elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
201 bfd_reloc_code_real_type code)
252b5132
RH		 202{
203 switch (code)
204 {
205 case BFD_RELOC_NONE:
206 TRACE ("BFD_RELOC_NONE");
55fd94b0 207 return &elf_howto_table[R_386_NONE];
252b5132
RH		 208
209 case BFD_RELOC_32:
210 TRACE ("BFD_RELOC_32");
55fd94b0 211 return &elf_howto_table[R_386_32];
252b5132
RH		 212
213 case BFD_RELOC_CTOR:
214 TRACE ("BFD_RELOC_CTOR");
55fd94b0 215 return &elf_howto_table[R_386_32];
252b5132
RH		 216
217 case BFD_RELOC_32_PCREL:
218 TRACE ("BFD_RELOC_PC32");
55fd94b0 219 return &elf_howto_table[R_386_PC32];
252b5132
RH		 220
221 case BFD_RELOC_386_GOT32:
222 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 223 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 224
225 case BFD_RELOC_386_PLT32:
226 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 227 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 228
229 case BFD_RELOC_386_COPY:
230 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 231 return &elf_howto_table[R_386_COPY];
252b5132
RH		 232
233 case BFD_RELOC_386_GLOB_DAT:
234 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 235 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 236
237 case BFD_RELOC_386_JUMP_SLOT:
238 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 239 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 240
241 case BFD_RELOC_386_RELATIVE:
242 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 243 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 244
245 case BFD_RELOC_386_GOTOFF:
246 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 247 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 248
249 case BFD_RELOC_386_GOTPC:
250 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 251 return &elf_howto_table[R_386_GOTPC];
252b5132 252
37e55690
JJ		 253 /* These relocs are a GNU extension. */
254 case BFD_RELOC_386_TLS_TPOFF:
255 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 256 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 257
258 case BFD_RELOC_386_TLS_IE:
259 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 260 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 261
262 case BFD_RELOC_386_TLS_GOTIE:
263 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 264 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 265
13ae64f3
JJ		 266 case BFD_RELOC_386_TLS_LE:
267 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 268 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 269
270 case BFD_RELOC_386_TLS_GD:
271 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 272 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 273
274 case BFD_RELOC_386_TLS_LDM:
275 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 276 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 277
252b5132
RH		 278 case BFD_RELOC_16:
279 TRACE ("BFD_RELOC_16");
55fd94b0 280 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 281
282 case BFD_RELOC_16_PCREL:
283 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 284 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 285
286 case BFD_RELOC_8:
287 TRACE ("BFD_RELOC_8");
55fd94b0 288 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 289
290 case BFD_RELOC_8_PCREL:
291 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 292 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 293
13ae64f3
JJ		 294 /* Common with Sun TLS implementation. */
295 case BFD_RELOC_386_TLS_LDO_32:
296 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 297 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 298
299 case BFD_RELOC_386_TLS_IE_32:
300 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 301 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 302
303 case BFD_RELOC_386_TLS_LE_32:
304 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 305 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 306
307 case BFD_RELOC_386_TLS_DTPMOD32:
308 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 309 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 310
311 case BFD_RELOC_386_TLS_DTPOFF32:
312 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 313 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 314
315 case BFD_RELOC_386_TLS_TPOFF32:
316 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 317 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 318
1788fc08
L		 319 case BFD_RELOC_SIZE32:
320 TRACE ("BFD_RELOC_SIZE32");
321 return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset];
322
67a4f2b7
AO		 323 case BFD_RELOC_386_TLS_GOTDESC:
324 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
325 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
326
327 case BFD_RELOC_386_TLS_DESC_CALL:
328 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
329 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
330
331 case BFD_RELOC_386_TLS_DESC:
332 TRACE ("BFD_RELOC_386_TLS_DESC");
333 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
334
cbe950e9
L		 335 case BFD_RELOC_386_IRELATIVE:
336 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 337 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 338
02a86693
L		 339 case BFD_RELOC_386_GOT32X:
340 TRACE ("BFD_RELOC_386_GOT32X");
341 return &elf_howto_table[R_386_GOT32X - R_386_tls_offset];
342
252b5132
RH		 343 case BFD_RELOC_VTABLE_INHERIT:
344 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 345 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 346
347 case BFD_RELOC_VTABLE_ENTRY:
348 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 349 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 350
351 default:
352 break;
353 }
354
355 TRACE ("Unknown");
356 return 0;
357}
358
157090f7
AM		 359static reloc_howto_type *
360elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
361 const char *r_name)
362{
363 unsigned int i;
364
365 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
366 if (elf_howto_table[i].name != NULL
367 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
368 return &elf_howto_table[i];
369
370 return NULL;
371}
372
142411ca
L		 373static reloc_howto_type *
374elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 375{
dc47f327
AM		 376 unsigned int indx;
377
378 if ((indx = r_type) >= R_386_standard
379 && ((indx = r_type - R_386_ext_offset) - R_386_standard
380 >= R_386_ext - R_386_standard)
13ae64f3 381 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520
L		 382 >= R_386_ext2 - R_386_ext)
383 && ((indx = r_type - R_386_vt_offset) - R_386_ext2
384 >= R_386_vt - R_386_ext2))
252b5132 385 {
d003868e
AM		 386 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
387 abfd, (int) r_type);
55fd94b0 388 indx = R_386_NONE;
252b5132 389 }
06614111
NC		 390 /* PR 17512: file: 0f67f69d. */
391 if (elf_howto_table [indx].type != r_type)
392 return NULL;
142411ca
L		 393 return &elf_howto_table[indx];
394}
395
396static void
397elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
398 arelent *cache_ptr,
399 Elf_Internal_Rela *dst)
400{
401 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
402 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 403}
404
405/* Return whether a symbol name implies a local label. The UnixWare
406 2.1 cc generates temporary symbols that start with .X, so we
407 recognize them here. FIXME: do other SVR4 compilers also use .X?.
408 If so, we should move the .X recognition into
409 _bfd_elf_is_local_label_name. */
410
b34976b6 411static bfd_boolean
55fd94b0 412elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 413{
414 if (name[0] == '.' && name[1] == 'X')
b34976b6 415 return TRUE;
252b5132
RH		 416
417 return _bfd_elf_is_local_label_name (abfd, name);
418}
419\f
38701953 420/* Support for core dump NOTE sections. */
61adc1a4 421
b34976b6 422static bfd_boolean
55fd94b0 423elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 424{
425 int offset;
eea6121a 426 size_t size;
38701953 427
61adc1a4 428 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 429 {
61adc1a4
NC		 430 int pr_version = bfd_get_32 (abfd, note->descdata);
431
432 if (pr_version != 1)
433 return FALSE;
434
435 /* pr_cursig */
228e534f 436 elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20);
61adc1a4
NC		 437
438 /* pr_pid */
228e534f 439 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 440
441 /* pr_reg */
442 offset = 28;
eea6121a 443 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 444 }
445 else
446 {
447 switch (note->descsz)
448 {
449 default:
450 return FALSE;
38701953 451
61adc1a4
NC		 452 case 144: /* Linux/i386 */
453 /* pr_cursig */
228e534f 454 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 455
61adc1a4 456 /* pr_pid */
228e534f 457 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 458
61adc1a4
NC		 459 /* pr_reg */
460 offset = 72;
eea6121a 461 size = 68;
38701953 462
61adc1a4
NC		 463 break;
464 }
38701953
AM		 465 }
466
467 /* Make a ".reg/999" section. */
468 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 469 size, note->descpos + offset);
38701953
AM		 470}
471
b34976b6 472static bfd_boolean
55fd94b0 473elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 474{
61adc1a4 475 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 476 {
61adc1a4
NC		 477 int pr_version = bfd_get_32 (abfd, note->descdata);
478
479 if (pr_version != 1)
b34976b6 480 return FALSE;
38701953 481
228e534f 482 elf_tdata (abfd)->core->program
61adc1a4 483 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
228e534f 484 elf_tdata (abfd)->core->command
61adc1a4
NC		 485 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
486 }
487 else
488 {
489 switch (note->descsz)
490 {
491 default:
492 return FALSE;
493
494 case 124: /* Linux/i386 elf_prpsinfo. */
228e534f 495 elf_tdata (abfd)->core->pid
261b8d08 496 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 497 elf_tdata (abfd)->core->program
61adc1a4 498 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 499 elf_tdata (abfd)->core->command
61adc1a4
NC		 500 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
501 }
38701953
AM		 502 }
503
504 /* Note that for some reason, a spurious space is tacked
505 onto the end of the args in some (at least one anyway)
506 implementations, so strip it off if it exists. */
38701953 507 {
228e534f 508 char *command = elf_tdata (abfd)->core->command;
38701953
AM		 509 int n = strlen (command);
510
511 if (0 < n && command[n - 1] == ' ')
512 command[n - 1] = '\0';
513 }
514
b34976b6 515 return TRUE;
38701953
AM		 516}
517\f
518/* Functions for the i386 ELF linker.
519
520 In order to gain some understanding of code in this file without
521 knowing all the intricate details of the linker, note the
522 following:
523
524 Functions named elf_i386_* are called by external routines, other
525 functions are only called locally. elf_i386_* functions appear
526 in this file more or less in the order in which they are called
527 from external routines. eg. elf_i386_check_relocs is called
528 early in the link process, elf_i386_finish_dynamic_sections is
529 one of the last functions. */
530
252b5132
RH		 531
532/* The name of the dynamic interpreter. This is put in the .interp
533 section. */
534
535#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
536
a23b6845
AM		 537/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
538 copying dynamic variables from a shared lib into an app's dynbss
539 section, and instead use a dynamic relocation to point into the
540 shared lib. */
541#define ELIMINATE_COPY_RELOCS 1
542
252b5132
RH		 543/* The size in bytes of an entry in the procedure linkage table. */
544
545#define PLT_ENTRY_SIZE 16
546
547/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 548 this. See the SVR4 ABI i386 supplement to see how this works.
549 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 550
eac338cf 551static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 552{
553 0xff, 0x35, /* pushl contents of address */
554 0, 0, 0, 0, /* replaced with address of .got + 4. */
555 0xff, 0x25, /* jmp indirect */
eac338cf 556 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 557};
558
559/* Subsequent entries in an absolute procedure linkage table look like
560 this. */
561
562static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
563{
564 0xff, 0x25, /* jmp indirect */
565 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
566 0x68, /* pushl immediate */
567 0, 0, 0, 0, /* replaced with offset into relocation table. */
568 0xe9, /* jmp relative */
569 0, 0, 0, 0 /* replaced with offset to start of .plt. */
570};
571
eac338cf
PB		 572/* The first entry in a PIC procedure linkage table look like this.
573 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 574
eac338cf 575static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 576{
577 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 578 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 579};
580
581/* Subsequent entries in a PIC procedure linkage table look like this. */
582
583static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
584{
585 0xff, 0xa3, /* jmp *offset(%ebx) */
586 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
587 0x68, /* pushl immediate */
588 0, 0, 0, 0, /* replaced with offset into relocation table. */
589 0xe9, /* jmp relative */
590 0, 0, 0, 0 /* replaced with offset to start of .plt. */
591};
592
dd7e64d4
L		 593/* Entries in the GOT procedure linkage table look like this. */
594
595static const bfd_byte elf_i386_got_plt_entry[8] =
596{
597 0xff, 0x25, /* jmp indirect */
598 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
599 0x66, 0x90 /* xchg %ax,%ax */
600};
601
602/* Entries in the PIC GOT procedure linkage table look like this. */
603
604static const bfd_byte elf_i386_pic_got_plt_entry[8] =
605{
606 0xff, 0xa3, /* jmp *offset(%ebx) */
607 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
608 0x66, 0x90 /* xchg %ax,%ax */
609};
610
e41b3a13
JJ		 611/* .eh_frame covering the .plt section. */
612
613static const bfd_byte elf_i386_eh_frame_plt[] =
614{
615#define PLT_CIE_LENGTH 20
616#define PLT_FDE_LENGTH 36
617#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
618#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
619 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
620 0, 0, 0, 0, /* CIE ID */
621 1, /* CIE version */
622 'z', 'R', 0, /* Augmentation string */
623 1, /* Code alignment factor */
624 0x7c, /* Data alignment factor */
625 8, /* Return address column */
626 1, /* Augmentation size */
627 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
628 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
629 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
630 DW_CFA_nop, DW_CFA_nop,
631
632 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
633 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
634 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
635 0, 0, 0, 0, /* .plt size goes here */
636 0, /* Augmentation size */
637 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
638 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
639 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
640 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
641 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
642 11, /* Block length */
643 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
644 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
645 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 646 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ		 647 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
648};
649
25e762b9
RM		 650struct elf_i386_plt_layout
651{
652 /* The first entry in an absolute procedure linkage table looks like this. */
653 const bfd_byte *plt0_entry;
654 unsigned int plt0_entry_size;
655
656 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
657 unsigned int plt0_got1_offset;
658 unsigned int plt0_got2_offset;
659
660 /* Later entries in an absolute procedure linkage table look like this. */
661 const bfd_byte *plt_entry;
662 unsigned int plt_entry_size;
663
664 /* Offsets into plt_entry that are to be replaced with... */
665 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
666 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
667 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
668
669 /* Offset into plt_entry where the initial value of the GOT entry points. */
670 unsigned int plt_lazy_offset;
671
672 /* The first entry in a PIC procedure linkage table looks like this. */
673 const bfd_byte *pic_plt0_entry;
674
675 /* Subsequent entries in a PIC procedure linkage table look like this. */
676 const bfd_byte *pic_plt_entry;
677
678 /* .eh_frame covering the .plt section. */
679 const bfd_byte *eh_frame_plt;
680 unsigned int eh_frame_plt_size;
681};
682
683#define GET_PLT_ENTRY_SIZE(abfd) \
684 get_elf_i386_backend_data (abfd)->plt->plt_entry_size
685
686/* These are the standard parameters. */
687static const struct elf_i386_plt_layout elf_i386_plt =
688 {
689 elf_i386_plt0_entry, /* plt0_entry */
690 sizeof (elf_i386_plt0_entry), /* plt0_entry_size */
691 2, /* plt0_got1_offset */
692 8, /* plt0_got2_offset */
693 elf_i386_plt_entry, /* plt_entry */
694 PLT_ENTRY_SIZE, /* plt_entry_size */
695 2, /* plt_got_offset */
696 7, /* plt_reloc_offset */
697 12, /* plt_plt_offset */
698 6, /* plt_lazy_offset */
699 elf_i386_pic_plt0_entry, /* pic_plt0_entry */
700 elf_i386_pic_plt_entry, /* pic_plt_entry */
701 elf_i386_eh_frame_plt, /* eh_frame_plt */
702 sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */
703 };
704\f
705
eac338cf
PB		 706/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
707 for the PLTResolve stub and then for each PLT entry. */
708#define PLTRESOLVE_RELOCS_SHLIB 0
709#define PLTRESOLVE_RELOCS 2
710#define PLT_NON_JUMP_SLOT_RELOCS 2
711
23209a78
RM		 712/* Architecture-specific backend data for i386. */
713
714struct elf_i386_backend_data
715{
25e762b9
RM		 716 /* Parameters describing PLT generation. */
717 const struct elf_i386_plt_layout *plt;
718
23209a78
RM		 719 /* Value used to fill the unused bytes of the first PLT entry. */
720 bfd_byte plt0_pad_byte;
721
722 /* True if the target system is VxWorks. */
723 int is_vxworks;
724};
725
726#define get_elf_i386_backend_data(abfd) \
727 ((const struct elf_i386_backend_data *) \
728 get_elf_backend_data (abfd)->arch_data)
729
730/* These are the standard parameters. */
731static const struct elf_i386_backend_data elf_i386_arch_bed =
732 {
25e762b9 733 &elf_i386_plt, /* plt */
23209a78
RM		 734 0, /* plt0_pad_byte */
735 0, /* is_vxworks */
736 };
737
738#define elf_backend_arch_data &elf_i386_arch_bed
739
aec6b87e
L		 740/* Is a undefined weak symbol which is resolved to 0. Reference to an
741 undefined weak symbol is resolved to 0 when building executable if
742 it isn't dynamic and
743 1. Has non-GOT/non-PLT relocations in text section. Or
744 2. Has no GOT/PLT relocation.
745 */
e62b9723 746#define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, GOT_RELOC, EH) \
aec6b87e
L		 747 ((EH)->elf.root.type == bfd_link_hash_undefweak \
748 && bfd_link_executable (INFO) \
749 && (elf_i386_hash_table (INFO)->interp == NULL \
e62b9723 750 || !(GOT_RELOC) \
aec6b87e
L		 751 || (EH)->has_non_got_reloc \
752 || !(INFO)->dynamic_undefined_weak))
753
252b5132
RH		 754/* i386 ELF linker hash entry. */
755
756struct elf_i386_link_hash_entry
757{
ebe50bae 758 struct elf_link_hash_entry elf;
252b5132 759
0c715baa 760 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 761 struct elf_dyn_relocs *dyn_relocs;
13ae64f3 762
37e55690
JJ		 763#define GOT_UNKNOWN 0
764#define GOT_NORMAL 1
765#define GOT_TLS_GD 2
766#define GOT_TLS_IE 4
767#define GOT_TLS_IE_POS 5
768#define GOT_TLS_IE_NEG 6
769#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO		 770#define GOT_TLS_GDESC 8
771#define GOT_TLS_GD_BOTH_P(type) \
772 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
773#define GOT_TLS_GD_P(type) \
774 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
775#define GOT_TLS_GDESC_P(type) \
776 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
777#define GOT_TLS_GD_ANY_P(type) \
778 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 779 unsigned char tls_type;
67a4f2b7 780
d5597ebc
L		 781 /* Symbol is referenced by R_386_GOTOFF relocation. */
782 unsigned int gotoff_ref : 1;
783
aec6b87e
L		 784 /* Symbol has GOT or PLT relocations. */
785 unsigned int has_got_reloc : 1;
786
787 /* Symbol has non-GOT/non-PLT relocations in text sections. */
788 unsigned int has_non_got_reloc : 1;
789
6eaa7fb5
L		 790 /* 0: symbol isn't ___tls_get_addr.
791 1: symbol is ___tls_get_addr.
792 2: symbol is unknown. */
793 unsigned int tls_get_addr : 2;
794
04ebc307
L		 795 /* Reference count of C/C++ function pointer relocations in read-write
796 section which can be resolved at run-time. */
797 bfd_signed_vma func_pointer_refcount;
798
dd7e64d4
L		 799 /* Information about the GOT PLT entry. Filled when there are both
800 GOT and PLT relocations against the same function. */
801 union gotplt_union plt_got;
802
67a4f2b7
AO		 803 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
804 starting at the end of the jump table. */
805 bfd_vma tlsdesc_got;
13ae64f3
JJ		 806};
807
808#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
809
810struct elf_i386_obj_tdata
811{
812 struct elf_obj_tdata root;
813
814 /* tls_type for each local got entry. */
815 char *local_got_tls_type;
67a4f2b7
AO		 816
817 /* GOTPLT entries for TLS descriptors. */
818 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 819};
820
13ae64f3
JJ		 821#define elf_i386_tdata(abfd) \
822 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
823
824#define elf_i386_local_got_tls_type(abfd) \
825 (elf_i386_tdata (abfd)->local_got_tls_type)
826
67a4f2b7
AO		 827#define elf_i386_local_tlsdesc_gotent(abfd) \
828 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
829
0ffa91dd
NC		 830#define is_i386_elf(bfd) \
831 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
832 && elf_tdata (bfd) != NULL \
4dfe6ac6 833 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 834
b34976b6 835static bfd_boolean
55fd94b0 836elf_i386_mkobject (bfd *abfd)
13ae64f3 837{
0ffa91dd 838 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 839 I386_ELF_DATA);
13ae64f3 840}
cedb70c5 841
252b5132
RH		 842/* i386 ELF linker hash table. */
843
844struct elf_i386_link_hash_table
845{
ebe50bae 846 struct elf_link_hash_table elf;
252b5132 847
6725bdbf 848 /* Short-cuts to get to dynamic linker sections. */
aec6b87e 849 asection *interp;
6725bdbf
AM		 850 asection *sdynbss;
851 asection *srelbss;
e41b3a13 852 asection *plt_eh_frame;
dd7e64d4 853 asection *plt_got;
9635fe29 854
4dfe6ac6
NC		 855 union
856 {
13ae64f3
JJ		 857 bfd_signed_vma refcount;
858 bfd_vma offset;
859 } tls_ldm_got;
860
67a4f2b7
AO		 861 /* The amount of space used by the reserved portion of the sgotplt
862 section, plus whatever space is used by the jump slots. */
863 bfd_vma sgotplt_jump_table_size;
864
87d72d41
AM		 865 /* Small local sym cache. */
866 struct sym_cache sym_cache;
9f03412a
AO		 867
868 /* _TLS_MODULE_BASE_ symbol. */
869 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 870
871 /* Used by local STT_GNU_IFUNC symbols. */
872 htab_t loc_hash_table;
4dfe6ac6
NC		 873 void * loc_hash_memory;
874
875 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
876 asection *srelplt2;
877
4dfe6ac6
NC		 878 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
879 bfd_vma next_tls_desc_index;
e1f98742
L		 880
881 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
882 bfd_vma next_jump_slot_index;
883
884 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
885 bfd_vma next_irelative_index;
2df3368d
L		 886
887 /* TRUE if there are dynamic relocs against IFUNC symbols that apply
888 to read-only sections. */
889 bfd_boolean readonly_dynrelocs_against_ifunc;
6725bdbf 890};
252b5132
RH		 891
892/* Get the i386 ELF linker hash table from a link_info structure. */
893
894#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 895 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
896 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 897
67a4f2b7 898#define elf_i386_compute_jump_table_size(htab) \
998d811a 899 ((htab)->elf.srelplt->reloc_count * 4)
67a4f2b7 900
252b5132
RH		 901/* Create an entry in an i386 ELF linker hash table. */
902
903static struct bfd_hash_entry *
eb4ff4d6
L		 904elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
905 struct bfd_hash_table *table,
906 const char *string)
252b5132 907{
252b5132
RH		 908 /* Allocate the structure if it has not already been allocated by a
909 subclass. */
ebe50bae
AM		 910 if (entry == NULL)
911 {
a50b1753
NC		 912 entry = (struct bfd_hash_entry *)
913 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 914 if (entry == NULL)
915 return entry;
916 }
252b5132
RH		 917
918 /* Call the allocation method of the superclass. */
ebe50bae
AM		 919 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
920 if (entry != NULL)
252b5132 921 {
ebe50bae
AM		 922 struct elf_i386_link_hash_entry *eh;
923
924 eh = (struct elf_i386_link_hash_entry *) entry;
925 eh->dyn_relocs = NULL;
13ae64f3 926 eh->tls_type = GOT_UNKNOWN;
d5597ebc 927 eh->gotoff_ref = 0;
aec6b87e
L		 928 eh->has_got_reloc = 0;
929 eh->has_non_got_reloc = 0;
6eaa7fb5 930 eh->tls_get_addr = 2;
04ebc307 931 eh->func_pointer_refcount = 0;
dd7e64d4 932 eh->plt_got.offset = (bfd_vma) -1;
67a4f2b7 933 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 934 }
935
ebe50bae 936 return entry;
252b5132
RH		 937}
938
c25bc9fc
L		 939/* Compute a hash of a local hash entry. We use elf_link_hash_entry
940 for local symbol so that we can handle local STT_GNU_IFUNC symbols
941 as global symbol. We reuse indx and dynstr_index for local symbol
942 hash since they aren't used by global symbols in this backend. */
943
944static hashval_t
945elf_i386_local_htab_hash (const void *ptr)
946{
947 struct elf_link_hash_entry *h
948 = (struct elf_link_hash_entry *) ptr;
d2149d72 949 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 950}
951
952/* Compare local hash entries. */
953
954static int
955elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
956{
957 struct elf_link_hash_entry *h1
958 = (struct elf_link_hash_entry *) ptr1;
959 struct elf_link_hash_entry *h2
960 = (struct elf_link_hash_entry *) ptr2;
961
962 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
963}
964
965/* Find and/or create a hash entry for local symbol. */
966
967static struct elf_link_hash_entry *
968elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
969 bfd *abfd, const Elf_Internal_Rela *rel,
970 bfd_boolean create)
971{
972 struct elf_i386_link_hash_entry e, *ret;
973 asection *sec = abfd->sections;
d2149d72
L		 974 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
975 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 976 void **slot;
977
978 e.elf.indx = sec->id;
979 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
980 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
981 create ? INSERT : NO_INSERT);
982
983 if (!slot)
984 return NULL;
985
986 if (*slot)
987 {
988 ret = (struct elf_i386_link_hash_entry *) *slot;
989 return &ret->elf;
990 }
991
992 ret = (struct elf_i386_link_hash_entry *)
993 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
994 sizeof (struct elf_i386_link_hash_entry));
995 if (ret)
996 {
997 memset (ret, 0, sizeof (*ret));
998 ret->elf.indx = sec->id;
999 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
1000 ret->elf.dynindx = -1;
04ebc307 1001 ret->func_pointer_refcount = 0;
dd7e64d4 1002 ret->plt_got.offset = (bfd_vma) -1;
c25bc9fc
L		 1003 *slot = ret;
1004 }
1005 return &ret->elf;
1006}
1007
68faa637
AM		 1008/* Destroy an i386 ELF linker hash table. */
1009
1010static void
d495ab0d 1011elf_i386_link_hash_table_free (bfd *obfd)
68faa637
AM		 1012{
1013 struct elf_i386_link_hash_table *htab
d495ab0d 1014 = (struct elf_i386_link_hash_table *) obfd->link.hash;
68faa637
AM		 1015
1016 if (htab->loc_hash_table)
1017 htab_delete (htab->loc_hash_table);
1018 if (htab->loc_hash_memory)
1019 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
d495ab0d 1020 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 1021}
1022
252b5132
RH		 1023/* Create an i386 ELF linker hash table. */
1024
1025static struct bfd_link_hash_table *
55fd94b0 1026elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 1027{
1028 struct elf_i386_link_hash_table *ret;
dc810e39 1029 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 1030
7bf52ea2 1031 ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt);
ebe50bae 1032 if (ret == NULL)
252b5132
RH		 1033 return NULL;
1034
eb4ff4d6
L		 1035 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
1036 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 1037 sizeof (struct elf_i386_link_hash_entry),
1038 I386_ELF_DATA))
252b5132 1039 {
e2d34d7d 1040 free (ret);
252b5132
RH		 1041 return NULL;
1042 }
1043
c25bc9fc
L		 1044 ret->loc_hash_table = htab_try_create (1024,
1045 elf_i386_local_htab_hash,
1046 elf_i386_local_htab_eq,
1047 NULL);
1048 ret->loc_hash_memory = objalloc_create ();
1049 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1050 {
d495ab0d 1051 elf_i386_link_hash_table_free (abfd);
c25bc9fc
L		 1052 return NULL;
1053 }
d495ab0d 1054 ret->elf.root.hash_table_free = elf_i386_link_hash_table_free;
c25bc9fc 1055
ebe50bae 1056 return &ret->elf.root;
252b5132
RH		 1057}
1058
6725bdbf
AM		 1059/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
1060 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
1061 hash table. */
1062
b34976b6 1063static bfd_boolean
55fd94b0 1064elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 1065{
1066 struct elf_i386_link_hash_table *htab;
1067
6725bdbf 1068 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 1069 return FALSE;
6725bdbf 1070
6de2ae4a 1071 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1072 if (htab == NULL)
1073 return FALSE;
1074
493f652c
L		 1075 /* Set the contents of the .interp section to the interpreter. */
1076 if (bfd_link_executable (info) && !info->nointerp)
1077 {
1078 asection *s = bfd_get_linker_section (dynobj, ".interp");
1079 if (s == NULL)
1080 abort ();
1081 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1082 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1083 htab->interp = s;
1084 }
1085
3d4d4302 1086 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
d5597ebc 1087 if (!htab->sdynbss)
6725bdbf
AM		 1088 abort ();
1089
0e1862bb 1090 if (bfd_link_executable (info))
d5597ebc
L		 1091 {
1092 /* Always allow copy relocs for building executables. */
1093 asection *s = bfd_get_linker_section (dynobj, ".rel.bss");
1094 if (s == NULL)
1095 {
1096 const struct elf_backend_data *bed = get_elf_backend_data (dynobj);
1097 s = bfd_make_section_anyway_with_flags (dynobj,
1098 ".rel.bss",
1099 (bed->dynamic_sec_flags
1100 | SEC_READONLY));
1101 if (s == NULL
1102 || ! bfd_set_section_alignment (dynobj, s,
1103 bed->s->log_file_align))
1104 return FALSE;
1105 }
1106 htab->srelbss = s;
1107 }
1108
23209a78 1109 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1110 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1111 &htab->srelplt2))
711de32c 1112 return FALSE;
eac338cf 1113
e41b3a13 1114 if (!info->no_ld_generated_unwind_info
2fe0fd06 1115 && htab->plt_eh_frame == NULL
e4de50d4 1116 && htab->elf.splt != NULL)
e41b3a13 1117 {
bbf96e4e
L		 1118 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1119 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1120 | SEC_LINKER_CREATED);
e41b3a13 1121 htab->plt_eh_frame
bbf96e4e 1122 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ		 1123 if (htab->plt_eh_frame == NULL
1124 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1125 return FALSE;
e41b3a13
JJ		 1126 }
1127
b34976b6 1128 return TRUE;
6725bdbf
AM		 1129}
1130
ebe50bae
AM		 1131/* Copy the extra info we tack onto an elf_link_hash_entry. */
1132
51b64d56 1133static void
fcfa13d2 1134elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1135 struct elf_link_hash_entry *dir,
1136 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1137{
1138 struct elf_i386_link_hash_entry *edir, *eind;
1139
1140 edir = (struct elf_i386_link_hash_entry *) dir;
1141 eind = (struct elf_i386_link_hash_entry *) ind;
1142
bbd7ec4a 1143 if (eind->dyn_relocs != NULL)
ebe50bae 1144 {
bbd7ec4a
AM		 1145 if (edir->dyn_relocs != NULL)
1146 {
e03a8ed8
L		 1147 struct elf_dyn_relocs **pp;
1148 struct elf_dyn_relocs *p;
bbd7ec4a 1149
fcfa13d2 1150 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1151 list. Merge any entries against the same section. */
1152 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1153 {
e03a8ed8 1154 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1155
1156 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1157 if (q->sec == p->sec)
1158 {
1159 q->pc_count += p->pc_count;
1160 q->count += p->count;
1161 *pp = p->next;
1162 break;
1163 }
1164 if (q == NULL)
1165 pp = &p->next;
1166 }
1167 *pp = edir->dyn_relocs;
1168 }
1169
ebe50bae
AM		 1170 edir->dyn_relocs = eind->dyn_relocs;
1171 eind->dyn_relocs = NULL;
1172 }
ebe50bae 1173
cd67d266
JJ		 1174 if (ind->root.type == bfd_link_hash_indirect
1175 && dir->got.refcount <= 0)
1176 {
1177 edir->tls_type = eind->tls_type;
1178 eind->tls_type = GOT_UNKNOWN;
1179 }
81848ca0 1180
d5597ebc
L		 1181 /* Copy gotoff_ref so that elf_i386_adjust_dynamic_symbol will
1182 generate a R_386_COPY reloc. */
1183 edir->gotoff_ref |= eind->gotoff_ref;
1184
aec6b87e
L		 1185 edir->has_got_reloc |= eind->has_got_reloc;
1186 edir->has_non_got_reloc |= eind->has_non_got_reloc;
1187
81848ca0
AM		 1188 if (ELIMINATE_COPY_RELOCS
1189 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1190 && dir->dynamic_adjusted)
1191 {
1192 /* If called to transfer flags for a weakdef during processing
1193 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1194 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1195 dir->ref_dynamic |= ind->ref_dynamic;
1196 dir->ref_regular |= ind->ref_regular;
1197 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1198 dir->needs_plt |= ind->needs_plt;
1199 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1200 }
81848ca0 1201 else
04ebc307
L		 1202 {
1203 if (eind->func_pointer_refcount > 0)
1204 {
1205 edir->func_pointer_refcount += eind->func_pointer_refcount;
1206 eind->func_pointer_refcount = 0;
1207 }
1208
1209 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1210 }
ebe50bae
AM		 1211}
1212
142411ca
L		 1213/* Return TRUE if the TLS access code sequence support transition
1214 from R_TYPE. */
1215
1216static bfd_boolean
bedfd056 1217elf_i386_check_tls_transition (asection *sec,
142411ca
L		 1218 bfd_byte *contents,
1219 Elf_Internal_Shdr *symtab_hdr,
1220 struct elf_link_hash_entry **sym_hashes,
1221 unsigned int r_type,
1222 const Elf_Internal_Rela *rel,
1223 const Elf_Internal_Rela *relend)
13ae64f3 1224{
6eaa7fb5 1225 unsigned int val, type, reg;
142411ca
L		 1226 unsigned long r_symndx;
1227 struct elf_link_hash_entry *h;
1228 bfd_vma offset;
6eaa7fb5
L		 1229 bfd_byte *call;
1230 bfd_boolean indirect_call, tls_get_addr;
142411ca 1231
142411ca 1232 offset = rel->r_offset;
13ae64f3 1233 switch (r_type)
142411ca
L		 1234 {
1235 case R_386_TLS_GD:
1236 case R_386_TLS_LDM:
1237 if (offset < 2 || (rel + 1) >= relend)
1238 return FALSE;
1239
6eaa7fb5
L		 1240 indirect_call = FALSE;
1241 call = contents + offset + 4;
1242 val = *(call - 5);
1243 type = *(call - 6);
142411ca
L		 1244 if (r_type == R_386_TLS_GD)
1245 {
09e8c3bf 1246 /* Check transition from GD access model. Only
6eaa7fb5
L		 1247 leal foo@tlsgd(,%ebx,1), %eax
1248 call ___tls_get_addr@PLT
1249 or
1250 leal foo@tlsgd(%ebx) %eax
1251 call ___tls_get_addr@PLT
1252 nop
1253 or
1254 leal foo@tlsgd(%reg), %eax
1255 call *___tls_get_addr@GOT(%reg)
1256 which may be converted to
1257 addr32 call ___tls_get_addr
142411ca 1258 can transit to different access model. */
6eaa7fb5
L		 1259 if ((offset + 10) > sec->size
1260 || (type != 0x8d && type != 0x04))
142411ca
L		 1261 return FALSE;
1262
142411ca
L		 1263 if (type == 0x04)
1264 {
6eaa7fb5
L		 1265 /* leal foo@tlsgd(,%ebx,1), %eax
1266 call ___tls_get_addr@PLT */
142411ca
L		 1267 if (offset < 3)
1268 return FALSE;
1269
6eaa7fb5
L		 1270 if (*(call - 7) != 0x8d
1271 || val != 0x1d
1272 || call[0] != 0xe8)
142411ca
L		 1273 return FALSE;
1274 }
1275 else
1276 {
6eaa7fb5
L		 1277 /* This must be
1278 leal foo@tlsgd(%ebx), %eax
1279 call ___tls_get_addr@PLT
1280 nop
1281 or
1282 leal foo@tlsgd(%reg), %eax
1283 call *___tls_get_addr@GOT(%reg)
1284 which may be converted to
1285 addr32 call ___tls_get_addr
1286
1287 %eax can't be used as the GOT base register since it
1288 is used to pass parameter to ___tls_get_addr. */
1289 reg = val & 7;
1290 if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0)
142411ca
L		 1291 return FALSE;
1292
6eaa7fb5
L		 1293 indirect_call = call[0] == 0xff;
1294 if (!(reg == 3 && call[0] == 0xe8 && call[5] == 0x90)
1295 && !(call[0] == 0x67 && call[1] == 0xe8)
1296 && !(indirect_call
1297 && (call[1] & 0xf8) == 0x90
1298 && (call[1] & 0x7) == reg))
142411ca
L		 1299 return FALSE;
1300 }
1301 }
1302 else
1303 {
1304 /* Check transition from LD access model. Only
6eaa7fb5
L		 1305 leal foo@tlsldm(%ebx), %eax
1306 call ___tls_get_addr@PLT
1307 or
1308 leal foo@tlsldm(%reg), %eax
1309 call *___tls_get_addr@GOT(%reg)
1310 which may be converted to
1311 addr32 call ___tls_get_addr
142411ca
L		 1312 can transit to different access model. */
1313 if (type != 0x8d || (offset + 9) > sec->size)
1314 return FALSE;
1315
6eaa7fb5
L		 1316 /* %eax can't be used as the GOT base register since it is
1317 used to pass parameter to ___tls_get_addr. */
1318 reg = val & 7;
1319 if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0)
142411ca 1320 return FALSE;
142411ca 1321
6eaa7fb5
L		 1322 indirect_call = call[0] == 0xff;
1323 if (!(reg == 3 && call[0] == 0xe8)
1324 && !(call[0] == 0x67 && call[1] == 0xe8)
1325 && !(indirect_call
1326 && (call[1] & 0xf8) == 0x90
1327 && (call[1] & 0x7) == reg))
1328 return FALSE;
1329 }
142411ca
L		 1330
1331 r_symndx = ELF32_R_SYM (rel[1].r_info);
1332 if (r_symndx < symtab_hdr->sh_info)
1333 return FALSE;
1334
6eaa7fb5 1335 tls_get_addr = FALSE;
142411ca 1336 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6eaa7fb5
L		 1337 if (h != NULL && h->root.root.string != NULL)
1338 {
1339 struct elf_i386_link_hash_entry *eh
1340 = (struct elf_i386_link_hash_entry *) h;
1341 tls_get_addr = eh->tls_get_addr == 1;
1342 if (eh->tls_get_addr > 1)
1343 {
1344 /* Use strncmp to check ___tls_get_addr since
1345 ___tls_get_addr may be versioned. */
1346 if (strncmp (h->root.root.string, "___tls_get_addr", 15)
1347 == 0)
1348 {
1349 eh->tls_get_addr = 1;
1350 tls_get_addr = TRUE;
1351 }
1352 else
1353 eh->tls_get_addr = 0;
1354 }
1355 }
1356
1357 if (!tls_get_addr)
1358 return FALSE;
1359 else if (indirect_call)
1360 return (ELF32_R_TYPE (rel[1].r_info) == R_386_GOT32X);
1361 else
1362 return (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1363 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
142411ca
L		 1364
1365 case R_386_TLS_IE:
1366 /* Check transition from IE access model:
1367 movl foo@indntpoff(%rip), %eax
1368 movl foo@indntpoff(%rip), %reg
1369 addl foo@indntpoff(%rip), %reg
1370 */
1371
1372 if (offset < 1 || (offset + 4) > sec->size)
1373 return FALSE;
1374
1375 /* Check "movl foo@tpoff(%rip), %eax" first. */
1376 val = bfd_get_8 (abfd, contents + offset - 1);
1377 if (val == 0xa1)
1378 return TRUE;
1379
1380 if (offset < 2)
1381 return FALSE;
1382
1383 /* Check movl|addl foo@tpoff(%rip), %reg. */
1384 type = bfd_get_8 (abfd, contents + offset - 2);
1385 return ((type == 0x8b || type == 0x03)
1386 && (val & 0xc7) == 0x05);
1387
1388 case R_386_TLS_GOTIE:
1389 case R_386_TLS_IE_32:
1390 /* Check transition from {IE_32,GOTIE} access model:
1391 subl foo@{tpoff,gontoff}(%reg1), %reg2
1392 movl foo@{tpoff,gontoff}(%reg1), %reg2
1393 addl foo@{tpoff,gontoff}(%reg1), %reg2
1394 */
1395
1396 if (offset < 2 || (offset + 4) > sec->size)
1397 return FALSE;
1398
1399 val = bfd_get_8 (abfd, contents + offset - 1);
1400 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1401 return FALSE;
1402
1403 type = bfd_get_8 (abfd, contents + offset - 2);
1404 return type == 0x8b || type == 0x2b || type == 0x03;
1405
1406 case R_386_TLS_GOTDESC:
1407 /* Check transition from GDesc access model:
1408 leal x@tlsdesc(%ebx), %eax
1409
1410 Make sure it's a leal adding ebx to a 32-bit offset
1411 into any register, although it's probably almost always
1412 going to be eax. */
1413
1414 if (offset < 2 || (offset + 4) > sec->size)
1415 return FALSE;
1416
1417 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1418 return FALSE;
1419
1420 val = bfd_get_8 (abfd, contents + offset - 1);
1421 return (val & 0xc7) == 0x83;
1422
1423 case R_386_TLS_DESC_CALL:
1424 /* Check transition from GDesc access model:
6eaa7fb5 1425 call *x@tlsdesc(%eax)
142411ca
L		 1426 */
1427 if (offset + 2 <= sec->size)
1428 {
6eaa7fb5
L		 1429 /* Make sure that it's a call *x@tlsdesc(%eax). */
1430 call = contents + offset;
1431 return call[0] == 0xff && call[1] == 0x10;
142411ca
L		 1432 }
1433
1434 return FALSE;
1435
1436 default:
1437 abort ();
1438 }
1439}
1440
1441/* Return TRUE if the TLS access transition is OK or no transition
1442 will be performed. Update R_TYPE if there is a transition. */
1443
1444static bfd_boolean
1445elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1446 asection *sec, bfd_byte *contents,
1447 Elf_Internal_Shdr *symtab_hdr,
1448 struct elf_link_hash_entry **sym_hashes,
1449 unsigned int *r_type, int tls_type,
1450 const Elf_Internal_Rela *rel,
1451 const Elf_Internal_Rela *relend,
4c544807 1452 struct elf_link_hash_entry *h,
bedfd056
L		 1453 unsigned long r_symndx,
1454 bfd_boolean from_relocate_section)
142411ca
L		 1455{
1456 unsigned int from_type = *r_type;
1457 unsigned int to_type = from_type;
1458 bfd_boolean check = TRUE;
1459
bb1cb422
L		 1460 /* Skip TLS transition for functions. */
1461 if (h != NULL
1462 && (h->type == STT_FUNC
1463 || h->type == STT_GNU_IFUNC))
1464 return TRUE;
1465
142411ca 1466 switch (from_type)
13ae64f3
JJ		 1467 {
1468 case R_386_TLS_GD:
67a4f2b7
AO		 1469 case R_386_TLS_GOTDESC:
1470 case R_386_TLS_DESC_CALL:
13ae64f3 1471 case R_386_TLS_IE_32:
37e55690
JJ		 1472 case R_386_TLS_IE:
1473 case R_386_TLS_GOTIE:
0e1862bb 1474 if (bfd_link_executable (info))
142411ca
L		 1475 {
1476 if (h == NULL)
1477 to_type = R_386_TLS_LE_32;
1478 else if (from_type != R_386_TLS_IE
1479 && from_type != R_386_TLS_GOTIE)
1480 to_type = R_386_TLS_IE_32;
1481 }
1482
bedfd056
L		 1483 /* When we are called from elf_i386_relocate_section, there may
1484 be additional transitions based on TLS_TYPE. */
1485 if (from_relocate_section)
142411ca
L		 1486 {
1487 unsigned int new_to_type = to_type;
1488
0e1862bb 1489 if (bfd_link_executable (info)
142411ca
L		 1490 && h != NULL
1491 && h->dynindx == -1
1492 && (tls_type & GOT_TLS_IE))
1493 new_to_type = R_386_TLS_LE_32;
1494
1495 if (to_type == R_386_TLS_GD
1496 || to_type == R_386_TLS_GOTDESC
1497 || to_type == R_386_TLS_DESC_CALL)
1498 {
1499 if (tls_type == GOT_TLS_IE_POS)
1500 new_to_type = R_386_TLS_GOTIE;
1501 else if (tls_type & GOT_TLS_IE)
1502 new_to_type = R_386_TLS_IE_32;
1503 }
1504
1505 /* We checked the transition before when we were called from
1506 elf_i386_check_relocs. We only want to check the new
1507 transition which hasn't been checked before. */
1508 check = new_to_type != to_type && from_type == to_type;
1509 to_type = new_to_type;
1510 }
1511
1512 break;
1513
13ae64f3 1514 case R_386_TLS_LDM:
0e1862bb 1515 if (bfd_link_executable (info))
142411ca
L		 1516 to_type = R_386_TLS_LE_32;
1517 break;
1518
1519 default:
1520 return TRUE;
1521 }
1522
1523 /* Return TRUE if there is no transition. */
1524 if (from_type == to_type)
1525 return TRUE;
1526
1527 /* Check if the transition can be performed. */
1528 if (check
bedfd056 1529 && ! elf_i386_check_tls_transition (sec, contents,
142411ca
L		 1530 symtab_hdr, sym_hashes,
1531 from_type, rel, relend))
1532 {
2f629d23 1533 reloc_howto_type *from, *to;
4c544807 1534 const char *name;
142411ca
L		 1535
1536 from = elf_i386_rtype_to_howto (abfd, from_type);
1537 to = elf_i386_rtype_to_howto (abfd, to_type);
1538
4c544807
L		 1539 if (h)
1540 name = h->root.root.string;
1541 else
1542 {
4c544807 1543 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1544
4c544807 1545 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1546 if (htab == NULL)
1547 name = "*unknown*";
1548 else
1549 {
1550 Elf_Internal_Sym *isym;
1551
1552 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1553 abfd, r_symndx);
1554 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1555 }
4c544807
L		 1556 }
1557
142411ca
L		 1558 (*_bfd_error_handler)
1559 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1560 "in section `%A' failed"),
4c544807 1561 abfd, sec, from->name, to->name, name,
142411ca
L		 1562 (unsigned long) rel->r_offset);
1563 bfd_set_error (bfd_error_bad_value);
1564 return FALSE;
13ae64f3
JJ		 1565 }
1566
142411ca
L		 1567 *r_type = to_type;
1568 return TRUE;
13ae64f3
JJ		 1569}
1570
c175a657
L		 1571/* With the local symbol, foo, we convert
1572 mov foo@GOT[(%reg1)], %reg2
1573 to
1574 lea foo[@GOTOFF(%reg1)], %reg2
1575 and convert
1576 call/jmp *foo@GOT[(%reg)]
1577 to
1578 nop call foo/jmp foo nop
1579 When PIC is false, convert
1580 test %reg1, foo@GOT[(%reg2)]
1581 to
1582 test $foo, %reg1
1583 and convert
1584 binop foo@GOT[(%reg1)], %reg2
1585 to
1586 binop $foo, %reg2
1587 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1588 instructions. */
1589
1590static
1591bfd_boolean
1592elf_i386_convert_load_reloc (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
1593 bfd_byte *contents,
1594 Elf_Internal_Rela *irel,
1595 struct elf_link_hash_entry *h,
1596 bfd_boolean *converted,
1597 struct bfd_link_info *link_info)
1598{
1599 struct elf_i386_link_hash_table *htab;
1600 unsigned int opcode;
1601 unsigned int modrm;
1602 bfd_boolean baseless;
1603 Elf_Internal_Sym *isym;
1604 unsigned int addend;
1605 unsigned int nop;
1606 bfd_vma nop_offset;
1607 bfd_boolean is_pic;
1608 bfd_boolean to_reloc_32;
1609 unsigned int r_type;
1610 unsigned int r_symndx;
1611 bfd_vma roff = irel->r_offset;
1612
1613 if (roff < 2)
1614 return TRUE;
1615
7d4d9709 1616 /* Addend for R_386_GOT32X relocations must be 0. */
c175a657
L		 1617 addend = bfd_get_32 (abfd, contents + roff);
1618 if (addend != 0)
1619 return TRUE;
1620
1621 htab = elf_i386_hash_table (link_info);
1622 is_pic = bfd_link_pic (link_info);
1623
1624 r_type = ELF32_R_TYPE (irel->r_info);
1625 r_symndx = ELF32_R_SYM (irel->r_info);
1626
1627 modrm = bfd_get_8 (abfd, contents + roff - 1);
1628 baseless = (modrm & 0xc7) == 0x5;
1629
7d4d9709 1630 if (baseless && is_pic)
c175a657
L		 1631 {
1632 /* For PIC, disallow R_386_GOT32X without a base register
7d4d9709 1633 since we don't know what the GOT base is. */
c175a657
L		 1634 const char *name;
1635
1636 if (h == NULL)
1637 {
1638 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd,
1639 r_symndx);
1640 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1641 }
1642 else
1643 name = h->root.root.string;
1644
1645 (*_bfd_error_handler)
1646 (_("%B: direct GOT relocation R_386_GOT32X against `%s' without base register can not be used when making a shared object"),
1647 abfd, name);
1648 return FALSE;
1649 }
1650
1651 opcode = bfd_get_8 (abfd, contents + roff - 2);
1652
c175a657
L		 1653 /* Convert to R_386_32 if PIC is false or there is no base
1654 register. */
1655 to_reloc_32 = !is_pic || baseless;
1656
7d4d9709
L		 1657 /* Try to convert R_386_GOT32X. Get the symbol referred to by the
1658 reloc. */
c175a657
L		 1659 if (h == NULL)
1660 {
1661 if (opcode == 0x0ff)
1662 /* Convert "call/jmp *foo@GOT[(%reg)]". */
1663 goto convert_branch;
1664 else
1665 /* Convert "mov foo@GOT[(%reg1)], %reg2",
1666 "test %reg1, foo@GOT(%reg2)" and
1667 "binop foo@GOT[(%reg1)], %reg2". */
1668 goto convert_load;
1669 }
1670
1671 /* Undefined weak symbol is only bound locally in executable
1672 and its reference is resolved as 0. */
1673 if (UNDEFINED_WEAK_RESOLVED_TO_ZERO (link_info, TRUE,
1674 elf_i386_hash_entry (h)))
1675 {
1676 if (opcode == 0xff)
1677 {
1678 /* No direct branch to 0 for PIC. */
1679 if (is_pic)
1680 return TRUE;
1681 else
1682 goto convert_branch;
1683 }
1684 else
1685 {
1686 /* We can convert load of address 0 to R_386_32. */
1687 to_reloc_32 = TRUE;
1688 goto convert_load;
1689 }
1690 }
1691
1692 if (opcode == 0xff)
1693 {
1694 /* We have "call/jmp *foo@GOT[(%reg)]". */
1695 if ((h->root.type == bfd_link_hash_defined
1696 || h->root.type == bfd_link_hash_defweak)
1697 && SYMBOL_REFERENCES_LOCAL (link_info, h))
1698 {
1699 /* The function is locally defined. */
1700convert_branch:
1701 /* Convert R_386_GOT32X to R_386_PC32. */
1702 if (modrm == 0x15 || (modrm & 0xf8) == 0x90)
1703 {
6eaa7fb5
L		 1704 struct elf_i386_link_hash_entry *eh
1705 = (struct elf_i386_link_hash_entry *) h;
1706
c175a657
L		 1707 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
1708 is a nop prefix. */
1709 modrm = 0xe8;
6eaa7fb5
L		 1710 /* To support TLS optimization, always use addr32 prefix
1711 for "call *___tls_get_addr@GOT(%reg)". */
1712 if (eh && eh->tls_get_addr == 1)
c175a657 1713 {
6eaa7fb5
L		 1714 nop = 0x67;
1715 nop_offset = irel->r_offset - 2;
c175a657
L		 1716 }
1717 else
6eaa7fb5
L		 1718 {
1719 nop = link_info->call_nop_byte;
1720 if (link_info->call_nop_as_suffix)
1721 {
1722 nop_offset = roff + 3;
1723 irel->r_offset -= 1;
1724 }
1725 else
1726 nop_offset = roff - 2;
1727 }
c175a657
L		 1728 }
1729 else
1730 {
1731 /* Convert to "jmp foo nop". */
1732 modrm = 0xe9;
1733 nop = NOP_OPCODE;
1734 nop_offset = roff + 3;
1735 irel->r_offset -= 1;
1736 }
1737
1738 bfd_put_8 (abfd, nop, contents + nop_offset);
1739 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
1740 /* When converting to PC-relative relocation, we
1741 need to adjust addend by -4. */
1742 bfd_put_32 (abfd, -4, contents + irel->r_offset);
1743 irel->r_info = ELF32_R_INFO (r_symndx, R_386_PC32);
1744
1745 *converted = TRUE;
1746 }
1747 }
1748 else
1749 {
1750 /* We have "mov foo@GOT[(%re1g)], %reg2",
1751 "test %reg1, foo@GOT(%reg2)" and
1752 "binop foo@GOT[(%reg1)], %reg2".
1753
1754 Avoid optimizing _DYNAMIC since ld.so may use its
1755 link-time address. */
1756 if (h == htab->elf.hdynamic)
1757 return TRUE;
1758
1759 /* def_regular is set by an assignment in a linker script in
1760 bfd_elf_record_link_assignment. */
1761 if ((h->def_regular
1762 || h->root.type == bfd_link_hash_defined
1763 || h->root.type == bfd_link_hash_defweak)
1764 && SYMBOL_REFERENCES_LOCAL (link_info, h))
1765 {
1766convert_load:
1767 if (opcode == 0x8b)
1768 {
1769 if (to_reloc_32)
1770 {
1771 /* Convert "mov foo@GOT[(%reg1)], %reg2" to
1772 "mov $foo, %reg2" with R_386_32. */
1773 r_type = R_386_32;
1774 modrm = 0xc0 | (modrm & 0x38) >> 3;
1775 bfd_put_8 (abfd, modrm, contents + roff - 1);
1776 opcode = 0xc7;
1777 }
1778 else
1779 {
1780 /* Convert "mov foo@GOT(%reg1), %reg2" to
1781 "lea foo@GOTOFF(%reg1), %reg2". */
1782 r_type = R_386_GOTOFF;
1783 opcode = 0x8d;
1784 }
1785 }
1786 else
1787 {
1788 /* Only R_386_32 is supported. */
1789 if (!to_reloc_32)
1790 return TRUE;
1791
1792 if (opcode == 0x85)
1793 {
1794 /* Convert "test %reg1, foo@GOT(%reg2)" to
1795 "test $foo, %reg1". */
1796 modrm = 0xc0 | (modrm & 0x38) >> 3;
1797 opcode = 0xf7;
1798 }
1799 else
1800 {
1801 /* Convert "binop foo@GOT(%reg1), %reg2" to
1802 "binop $foo, %reg2". */
1803 modrm = (0xc0
1804 | (modrm & 0x38) >> 3
1805 | (opcode & 0x3c));
1806 opcode = 0x81;
1807 }
1808 bfd_put_8 (abfd, modrm, contents + roff - 1);
1809 r_type = R_386_32;
1810 }
1811
1812 bfd_put_8 (abfd, opcode, contents + roff - 2);
1813 irel->r_info = ELF32_R_INFO (r_symndx, r_type);
1814
1815 *converted = TRUE;
1816 }
1817 }
1818
1819 return TRUE;
1820}
1821
c1d11331
L		 1822/* Rename some of the generic section flags to better document how they
1823 are used here. */
c337a162
L		 1824#define need_convert_load sec_flg0
1825#define check_relocs_failed sec_flg1
c1d11331 1826
252b5132 1827/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1828 calculate needed space in the global offset table, procedure linkage
1829 table, and dynamic reloc sections. */
252b5132 1830
b34976b6 1831static bfd_boolean
55fd94b0
AM		 1832elf_i386_check_relocs (bfd *abfd,
1833 struct bfd_link_info *info,
1834 asection *sec,
1835 const Elf_Internal_Rela *relocs)
252b5132 1836{
6725bdbf 1837 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1838 Elf_Internal_Shdr *symtab_hdr;
1839 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1840 const Elf_Internal_Rela *rel;
1841 const Elf_Internal_Rela *rel_end;
252b5132 1842 asection *sreloc;
bedfd056 1843 bfd_byte *contents;
dd7e64d4 1844 bfd_boolean use_plt_got;
252b5132 1845
0e1862bb 1846 if (bfd_link_relocatable (info))
b34976b6 1847 return TRUE;
252b5132 1848
081b1afe
L		 1849 /* Don't do anything special with non-loaded, non-alloced sections.
1850 In particular, any relocs in such sections should not affect GOT
1851 and PLT reference counting (ie. we don't allow them to create GOT
1852 or PLT entries), there's no possibility or desire to optimize TLS
1853 relocs, and there's not much point in propagating relocs to shared
1854 libs that the dynamic linker won't relocate. */
1855 if ((sec->flags & SEC_ALLOC) == 0)
1856 return TRUE;
1857
0ffa91dd
NC		 1858 BFD_ASSERT (is_i386_elf (abfd));
1859
6725bdbf 1860 htab = elf_i386_hash_table (info);
4dfe6ac6 1861 if (htab == NULL)
c337a162
L		 1862 {
1863 sec->check_relocs_failed = 1;
1864 return FALSE;
1865 }
4dfe6ac6 1866
bedfd056
L		 1867 /* Get the section contents. */
1868 if (elf_section_data (sec)->this_hdr.contents != NULL)
1869 contents = elf_section_data (sec)->this_hdr.contents;
1870 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1871 {
1872 sec->check_relocs_failed = 1;
1873 return FALSE;
1874 }
1875
dd7e64d4
L		 1876 use_plt_got = (!get_elf_i386_backend_data (abfd)->is_vxworks
1877 && (get_elf_i386_backend_data (abfd)
1878 == &elf_i386_arch_bed));
1879
0ffa91dd 1880 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1881 sym_hashes = elf_sym_hashes (abfd);
252b5132 1882
252b5132
RH		 1883 sreloc = NULL;
1884
1885 rel_end = relocs + sec->reloc_count;
1886 for (rel = relocs; rel < rel_end; rel++)
1887 {
13ae64f3 1888 unsigned int r_type;
252b5132
RH		 1889 unsigned long r_symndx;
1890 struct elf_link_hash_entry *h;
d5597ebc 1891 struct elf_i386_link_hash_entry *eh;
4c544807
L		 1892 Elf_Internal_Sym *isym;
1893 const char *name;
06a6a421 1894 bfd_boolean size_reloc;
252b5132
RH		 1895
1896 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1897 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1898
d9bc7a44 1899 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1900 {
d003868e
AM		 1901 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1902 abfd,
8f615d07 1903 r_symndx);
c337a162 1904 goto error_return;
f5f31454
L		 1905 }
1906
252b5132 1907 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1908 {
1909 /* A local symbol. */
c2e61a4e
L		 1910 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1911 abfd, r_symndx);
1912 if (isym == NULL)
c337a162 1913 goto error_return;
c25bc9fc
L		 1914
1915 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1916 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1917 {
9fff0c39 1918 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1919 if (h == NULL)
c337a162 1920 goto error_return;
6bbec505 1921
c25bc9fc
L		 1922 /* Fake a STT_GNU_IFUNC symbol. */
1923 h->type = STT_GNU_IFUNC;
1924 h->def_regular = 1;
1925 h->ref_regular = 1;
1926 h->forced_local = 1;
1927 h->root.type = bfd_link_hash_defined;
1928 }
1929 else
1930 h = NULL;
1931 }
252b5132 1932 else
71cb9464 1933 {
4c544807 1934 isym = NULL;
71cb9464
L		 1935 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1936 while (h->root.type == bfd_link_hash_indirect
1937 || h->root.type == bfd_link_hash_warning)
1938 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1939 }
cbe950e9 1940
d5597ebc 1941 eh = (struct elf_i386_link_hash_entry *) h;
c25bc9fc
L		 1942 if (h != NULL)
1943 {
cbe950e9
L		 1944 switch (r_type)
1945 {
1946 default:
1947 break;
1948
d5597ebc
L		 1949 case R_386_GOTOFF:
1950 eh->gotoff_ref = 1;
cbe950e9
L		 1951 case R_386_32:
1952 case R_386_PC32:
1953 case R_386_PLT32:
1954 case R_386_GOT32:
02a86693 1955 case R_386_GOT32X:
9d4057ee
AM		 1956 if (htab->elf.dynobj == NULL)
1957 htab->elf.dynobj = abfd;
466ee2af
L		 1958 /* Create the ifunc sections for static executables. */
1959 if (h->type == STT_GNU_IFUNC
1960 && !_bfd_elf_create_ifunc_sections (htab->elf.dynobj,
1961 info))
c337a162 1962 goto error_return;
cbe950e9
L		 1963 break;
1964 }
1965
ad1e85de
L		 1966 /* It is referenced by a non-shared object. */
1967 h->ref_regular = 1;
61315175 1968 h->root.non_ir_ref = 1;
13a2df29
L		 1969
1970 if (h->type == STT_GNU_IFUNC)
1971 elf_tdata (info->output_bfd)->has_gnu_symbols
1972 |= elf_gnu_symbol_ifunc;
71cb9464 1973 }
252b5132 1974
bedfd056 1975 if (! elf_i386_tls_transition (info, abfd, sec, contents,
142411ca
L		 1976 symtab_hdr, sym_hashes,
1977 &r_type, GOT_UNKNOWN,
bedfd056 1978 rel, rel_end, h, r_symndx, FALSE))
c337a162 1979 goto error_return;
13ae64f3
JJ		 1980
1981 switch (r_type)
252b5132 1982 {
37e55690
JJ		 1983 case R_386_TLS_LDM:
1984 htab->tls_ldm_got.refcount += 1;
1985 goto create_got;
1986
1987 case R_386_PLT32:
1988 /* This symbol requires a procedure linkage table entry. We
1989 actually build the entry in adjust_dynamic_symbol,
1990 because this might be a case of linking PIC code which is
1991 never referenced by a dynamic object, in which case we
1992 don't need to generate a procedure linkage table entry
1993 after all. */
1994
1995 /* If this is a local symbol, we resolve it directly without
1996 creating a procedure linkage table entry. */
1997 if (h == NULL)
1998 continue;
1999
aec6b87e 2000 eh->has_got_reloc = 1;
f5385ebf 2001 h->needs_plt = 1;
37e55690
JJ		 2002 h->plt.refcount += 1;
2003 break;
2004
6a3e1bae 2005 case R_386_SIZE32:
06a6a421 2006 size_reloc = TRUE;
6a3e1bae
L		 2007 goto do_size;
2008
13ae64f3 2009 case R_386_TLS_IE_32:
37e55690
JJ		 2010 case R_386_TLS_IE:
2011 case R_386_TLS_GOTIE:
0e1862bb 2012 if (!bfd_link_executable (info))
13ae64f3 2013 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 2014 /* Fall through */
2015
252b5132 2016 case R_386_GOT32:
02a86693 2017 case R_386_GOT32X:
13ae64f3 2018 case R_386_TLS_GD:
67a4f2b7
AO		 2019 case R_386_TLS_GOTDESC:
2020 case R_386_TLS_DESC_CALL:
252b5132 2021 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 2022 {
2023 int tls_type, old_tls_type;
2024
2025 switch (r_type)
2026 {
2027 default:
02a86693
L		 2028 case R_386_GOT32:
2029 case R_386_GOT32X:
2030 tls_type = GOT_NORMAL;
2031 break;
13ae64f3 2032 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 2033 case R_386_TLS_GOTDESC:
2034 case R_386_TLS_DESC_CALL:
2035 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 2036 case R_386_TLS_IE_32:
2037 if (ELF32_R_TYPE (rel->r_info) == r_type)
2038 tls_type = GOT_TLS_IE_NEG;
2039 else
ebcfb3c0
JJ		 2040 /* If this is a GD->IE transition, we may use either of
2041 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 2042 tls_type = GOT_TLS_IE;
2043 break;
2044 case R_386_TLS_IE:
2045 case R_386_TLS_GOTIE:
2046 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 2047 }
2048
2049 if (h != NULL)
2050 {
2051 h->got.refcount += 1;
2052 old_tls_type = elf_i386_hash_entry(h)->tls_type;
2053 }
2054 else
2055 {
2056 bfd_signed_vma *local_got_refcounts;
2057
2058 /* This is a global offset table entry for a local symbol. */
2059 local_got_refcounts = elf_local_got_refcounts (abfd);
2060 if (local_got_refcounts == NULL)
2061 {
2062 bfd_size_type size;
2063
2064 size = symtab_hdr->sh_info;
67a4f2b7
AO		 2065 size *= (sizeof (bfd_signed_vma)
2066 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 2067 local_got_refcounts = (bfd_signed_vma *)
2068 bfd_zalloc (abfd, size);
13ae64f3 2069 if (local_got_refcounts == NULL)
c337a162 2070 goto error_return;
13ae64f3 2071 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 2072 elf_i386_local_tlsdesc_gotent (abfd)
2073 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 2074 elf_i386_local_got_tls_type (abfd)
67a4f2b7 2075 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 2076 }
2077 local_got_refcounts[r_symndx] += 1;
2078 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
2079 }
2080
37e55690
JJ		 2081 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
2082 tls_type |= old_tls_type;
13ae64f3
JJ		 2083 /* If a TLS symbol is accessed using IE at least once,
2084 there is no point to use dynamic model for it. */
ebcfb3c0 2085 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 2086 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 2087 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 2088 {
67a4f2b7 2089 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 2090 tls_type = old_tls_type;
67a4f2b7
AO		 2091 else if (GOT_TLS_GD_ANY_P (old_tls_type)
2092 && GOT_TLS_GD_ANY_P (tls_type))
2093 tls_type |= old_tls_type;
13ae64f3
JJ		 2094 else
2095 {
09a24cbf 2096 if (h)
4c544807
L		 2097 name = h->root.root.string;
2098 else
2099 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
2100 NULL);
13ae64f3 2101 (*_bfd_error_handler)
d003868e 2102 (_("%B: `%s' accessed both as normal and "
55fd94b0 2103 "thread local symbol"),
4c544807 2104 abfd, name);
68c4a57e 2105 bfd_set_error (bfd_error_bad_value);
c337a162 2106 goto error_return;
13ae64f3
JJ		 2107 }
2108 }
2109
2110 if (old_tls_type != tls_type)
2111 {
2112 if (h != NULL)
2113 elf_i386_hash_entry (h)->tls_type = tls_type;
2114 else
2115 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
2116 }
2117 }
0ac8d2ca
AM		 2118 /* Fall through */
2119
2120 case R_386_GOTOFF:
2121 case R_386_GOTPC:
13ae64f3 2122 create_got:
6de2ae4a 2123 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 2124 {
2125 if (htab->elf.dynobj == NULL)
2126 htab->elf.dynobj = abfd;
6de2ae4a 2127 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c337a162 2128 goto error_return;
0ac8d2ca 2129 }
37e55690 2130 if (r_type != R_386_TLS_IE)
aec6b87e
L		 2131 {
2132 if (eh != NULL)
2133 eh->has_got_reloc = 1;
2134 break;
2135 }
37e55690 2136 /* Fall through */
252b5132 2137
37e55690
JJ		 2138 case R_386_TLS_LE_32:
2139 case R_386_TLS_LE:
aec6b87e
L		 2140 if (eh != NULL)
2141 eh->has_got_reloc = 1;
0e1862bb 2142 if (bfd_link_executable (info))
37e55690 2143 break;
bffbf940 2144 info->flags |= DF_STATIC_TLS;
aec6b87e 2145 goto do_relocation;
252b5132
RH		 2146
2147 case R_386_32:
2148 case R_386_PC32:
aec6b87e
L		 2149 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
2150 eh->has_non_got_reloc = 1;
2151do_relocation:
bf52d7c7
L		 2152 /* We are called after all symbols have been resolved. Only
2153 relocation against STT_GNU_IFUNC symbol must go through
2154 PLT. */
d1ed1c7d
L		 2155 if (h != NULL
2156 && (bfd_link_executable (info)
bf52d7c7 2157 || h->type == STT_GNU_IFUNC))
6725bdbf 2158 {
12d0ee4a 2159 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 2160 need a copy reloc. We can't check reliably at this
2161 stage whether the section is read-only, as input
2162 sections have not yet been mapped to output sections.
2163 Tentatively set the flag for now, and correct in
2164 adjust_dynamic_symbol. */
f5385ebf 2165 h->non_got_ref = 1;
12d0ee4a
AM		 2166
2167 /* We may need a .plt entry if the function this reloc
2168 refers to is in a shared lib. */
51b64d56 2169 h->plt.refcount += 1;
4b627c18
L		 2170 if (r_type == R_386_PC32)
2171 {
2172 /* Since something like ".long foo - ." may be used
2173 as pointer, make sure that PLT is used if foo is
2174 a function defined in a shared library. */
2175 if ((sec->flags & SEC_CODE) == 0)
2176 h->pointer_equality_needed = 1;
2177 }
2178 else
04ebc307
L		 2179 {
2180 h->pointer_equality_needed = 1;
2181 /* R_386_32 can be resolved at run-time. */
2182 if (r_type == R_386_32
2183 && (sec->flags & SEC_READONLY) == 0)
2184 eh->func_pointer_refcount += 1;
2185 }
6725bdbf 2186 }
7843f00e 2187
06a6a421 2188 size_reloc = FALSE;
6a3e1bae 2189do_size:
252b5132 2190 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 2191 against a global symbol, or a non PC relative reloc
2192 against a local symbol, then we need to copy the reloc
2193 into the shared library. However, if we are linking with
2194 -Bsymbolic, we do not need to copy a reloc against a
2195 global symbol which is defined in an object we are
2196 including in the link (i.e., DEF_REGULAR is set). At
2197 this point we have not seen all the input files, so it is
2198 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 2199 later (it is never cleared). In case of a weak definition,
2200 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 2201 a shared library. We account for that possibility below by
1f655a09
L		 2202 storing information in the relocs_copied field of the hash
2203 table entry. A similar situation occurs when creating
2204 shared libraries and symbol visibility changes render the
12d0ee4a 2205 symbol local.
56882138 2206
12d0ee4a
AM		 2207 If on the other hand, we are creating an executable, we
2208 may need to keep relocations for symbols satisfied by a
2209 dynamic library if we manage to avoid copy relocs for the
2210 symbol. */
081b1afe
L		 2211 if ((bfd_link_pic (info)
2212 && (r_type != R_386_PC32
2213 || (h != NULL
2214 && (! (bfd_link_pie (info)
2215 || SYMBOLIC_BIND (info, h))
2216 || h->root.type == bfd_link_hash_defweak
2217 || !h->def_regular))))
2218 || (ELIMINATE_COPY_RELOCS
2219 && !bfd_link_pic (info)
2220 && h != NULL
2221 && (h->root.type == bfd_link_hash_defweak
2222 || !h->def_regular)))
252b5132 2223 {
e03a8ed8
L		 2224 struct elf_dyn_relocs *p;
2225 struct elf_dyn_relocs **head;
ec338859 2226
12d0ee4a
AM		 2227 /* We must copy these reloc types into the output file.
2228 Create a reloc section in dynobj and make room for
2229 this reloc. */
252b5132
RH		 2230 if (sreloc == NULL)
2231 {
0ac8d2ca
AM		 2232 if (htab->elf.dynobj == NULL)
2233 htab->elf.dynobj = abfd;
2234
83bac4b0
NC		 2235 sreloc = _bfd_elf_make_dynamic_reloc_section
2236 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
2237
252b5132 2238 if (sreloc == NULL)
c337a162 2239 goto error_return;
252b5132
RH		 2240 }
2241
0c715baa
AM		 2242 /* If this is a global symbol, we count the number of
2243 relocations we need for this symbol. */
2244 if (h != NULL)
252b5132 2245 {
d5597ebc 2246 head = &eh->dyn_relocs;
0c715baa
AM		 2247 }
2248 else
2249 {
ec338859
AM		 2250 /* Track dynamic relocs needed for local syms too.
2251 We really need local syms available to do this
2252 easily. Oh well. */
87d72d41 2253 void **vpp;
ec338859 2254 asection *s;
87d72d41
AM		 2255
2256 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2257 abfd, r_symndx);
2258 if (isym == NULL)
c337a162 2259 goto error_return;
87d72d41
AM		 2260
2261 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 2262 if (s == NULL)
87d72d41 2263 s = sec;
ec338859 2264
e81d3500 2265 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 2266 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 2267 }
2268
2269 p = *head;
2270 if (p == NULL || p->sec != sec)
2271 {
2272 bfd_size_type amt = sizeof *p;
a50b1753
NC		 2273 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
2274 amt);
ec338859 2275 if (p == NULL)
c337a162 2276 goto error_return;
ec338859
AM		 2277 p->next = *head;
2278 *head = p;
2279 p->sec = sec;
2280 p->count = 0;
2281 p->pc_count = 0;
252b5132 2282 }
ec338859
AM		 2283
2284 p->count += 1;
06a6a421
L		 2285 /* Count size relocation as PC-relative relocation. */
2286 if (r_type == R_386_PC32 || size_reloc)
ec338859 2287 p->pc_count += 1;
252b5132 2288 }
252b5132
RH		 2289 break;
2290
2291 /* This relocation describes the C++ object vtable hierarchy.
2292 Reconstruct it for later use during GC. */
2293 case R_386_GNU_VTINHERIT:
d17e0c6e 2294 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c337a162 2295 goto error_return;
252b5132
RH		 2296 break;
2297
2298 /* This relocation describes which C++ vtable entries are actually
2299 used. Record for later use during GC. */
2300 case R_386_GNU_VTENTRY:
c6aa130f
MS		 2301 BFD_ASSERT (h != NULL);
2302 if (h != NULL
2303 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c337a162 2304 goto error_return;
252b5132
RH		 2305 break;
2306
2307 default:
2308 break;
2309 }
dd7e64d4
L		 2310
2311 if (use_plt_got
2312 && h != NULL
2313 && h->plt.refcount > 0
8ded2ddc
L		 2314 && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
2315 || h->got.refcount > 0)
dd7e64d4
L		 2316 && htab->plt_got == NULL)
2317 {
2318 /* Create the GOT procedure linkage table. */
2319 unsigned int plt_got_align;
2320 const struct elf_backend_data *bed;
2321
2322 bed = get_elf_backend_data (info->output_bfd);
2323 BFD_ASSERT (sizeof (elf_i386_got_plt_entry) == 8
2324 && (sizeof (elf_i386_got_plt_entry)
2325 == sizeof (elf_i386_pic_got_plt_entry)));
2326 plt_got_align = 3;
2327
2328 if (htab->elf.dynobj == NULL)
2329 htab->elf.dynobj = abfd;
2330 htab->plt_got
2331 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2332 ".plt.got",
2333 (bed->dynamic_sec_flags
2334 | SEC_ALLOC
2335 | SEC_CODE
2336 | SEC_LOAD
2337 | SEC_READONLY));
2338 if (htab->plt_got == NULL
2339 || !bfd_set_section_alignment (htab->elf.dynobj,
2340 htab->plt_got,
2341 plt_got_align))
c337a162 2342 goto error_return;
dd7e64d4 2343 }
c1d11331 2344
52bf37dd 2345 if (r_type == R_386_GOT32X
c1d11331 2346 && (h == NULL || h->type != STT_GNU_IFUNC))
02a86693 2347 sec->need_convert_load = 1;
252b5132
RH		 2348 }
2349
bedfd056
L		 2350 if (elf_section_data (sec)->this_hdr.contents != contents)
2351 {
2352 if (!info->keep_memory)
2353 free (contents);
2354 else
2355 {
2356 /* Cache the section contents for elf_link_input_bfd. */
2357 elf_section_data (sec)->this_hdr.contents = contents;
2358 }
2359 }
2360
b34976b6 2361 return TRUE;
c337a162
L		 2362
2363error_return:
bedfd056
L		 2364 if (elf_section_data (sec)->this_hdr.contents != contents)
2365 free (contents);
c337a162
L		 2366 sec->check_relocs_failed = 1;
2367 return FALSE;
252b5132
RH		 2368}
2369
2370/* Return the section that should be marked against GC for a given
2371 relocation. */
2372
2373static asection *
55fd94b0 2374elf_i386_gc_mark_hook (asection *sec,
07adf181 2375 struct bfd_link_info *info,
55fd94b0
AM		 2376 Elf_Internal_Rela *rel,
2377 struct elf_link_hash_entry *h,
2378 Elf_Internal_Sym *sym)
252b5132
RH		 2379{
2380 if (h != NULL)
07adf181
AM		 2381 switch (ELF32_R_TYPE (rel->r_info))
2382 {
2383 case R_386_GNU_VTINHERIT:
2384 case R_386_GNU_VTENTRY:
2385 return NULL;
2386 }
2387
2388 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 2389}
2390
aec6b87e
L		 2391/* Remove undefined weak symbol from the dynamic symbol table if it
2392 is resolved to 0. */
2393
2394static bfd_boolean
2395elf_i386_fixup_symbol (struct bfd_link_info *info,
2396 struct elf_link_hash_entry *h)
2397{
2398 if (h->dynindx != -1
2399 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
e62b9723 2400 elf_i386_hash_entry (h)->has_got_reloc,
aec6b87e
L		 2401 elf_i386_hash_entry (h)))
2402 {
2403 h->dynindx = -1;
2404 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2405 h->dynstr_index);
2406 }
2407 return TRUE;
2408}
2409
252b5132
RH		 2410/* Adjust a symbol defined by a dynamic object and referenced by a
2411 regular object. The current definition is in some section of the
2412 dynamic object, but we're not including those sections. We have to
2413 change the definition to something the rest of the link can
2414 understand. */
2415
b34976b6 2416static bfd_boolean
55fd94b0
AM		 2417elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2418 struct elf_link_hash_entry *h)
252b5132 2419{
6725bdbf 2420 struct elf_i386_link_hash_table *htab;
252b5132 2421 asection *s;
5ca5bb35
L		 2422 struct elf_i386_link_hash_entry *eh;
2423 struct elf_dyn_relocs *p;
252b5132 2424
cbe950e9
L		 2425 /* STT_GNU_IFUNC symbol must go through PLT. */
2426 if (h->type == STT_GNU_IFUNC)
2427 {
73bcf233
L		 2428 /* All local STT_GNU_IFUNC references must be treate as local
2429 calls via local PLT. */
5ca5bb35
L		 2430 if (h->ref_regular
2431 && SYMBOL_CALLS_LOCAL (info, h))
2432 {
73bcf233 2433 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2434 struct elf_dyn_relocs **pp;
2435
2436 eh = (struct elf_i386_link_hash_entry *) h;
2437 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2438 {
2439 pc_count += p->pc_count;
2440 p->count -= p->pc_count;
2441 p->pc_count = 0;
73bcf233 2442 count += p->count;
5ca5bb35
L		 2443 if (p->count == 0)
2444 *pp = p->next;
2445 else
2446 pp = &p->next;
2447 }
2448
73bcf233 2449 if (pc_count || count)
5ca5bb35
L		 2450 {
2451 h->needs_plt = 1;
5ca5bb35 2452 h->non_got_ref = 1;
a5479e5f
L		 2453 if (h->plt.refcount <= 0)
2454 h->plt.refcount = 1;
2455 else
2456 h->plt.refcount += 1;
5ca5bb35
L		 2457 }
2458 }
2459
cbe950e9
L		 2460 if (h->plt.refcount <= 0)
2461 {
2462 h->plt.offset = (bfd_vma) -1;
2463 h->needs_plt = 0;
2464 }
2465 return TRUE;
2466 }
2467
252b5132
RH		 2468 /* If this is a function, put it in the procedure linkage table. We
2469 will fill in the contents of the procedure linkage table later,
2470 when we know the address of the .got section. */
2471 if (h->type == STT_FUNC
f5385ebf 2472 || h->needs_plt)
252b5132 2473 {
6725bdbf 2474 if (h->plt.refcount <= 0
9c7a29a3
AM		 2475 || SYMBOL_CALLS_LOCAL (info, h)
2476 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2477 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2478 {
2479 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2480 file, but the symbol was never referred to by a dynamic
2481 object, or if all references were garbage collected. In
2482 such a case, we don't actually need to build a procedure
2483 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2484 h->plt.offset = (bfd_vma) -1;
f5385ebf 2485 h->needs_plt = 0;
252b5132
RH		 2486 }
2487
b34976b6 2488 return TRUE;
252b5132 2489 }
6725bdbf
AM		 2490 else
2491 /* It's possible that we incorrectly decided a .plt reloc was
2492 needed for an R_386_PC32 reloc to a non-function sym in
2493 check_relocs. We can't decide accurately between function and
2494 non-function syms in check-relocs; Objects loaded later in
2495 the link may change h->type. So fix it now. */
bbd7ec4a 2496 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2497
2498 /* If this is a weak symbol, and there is a real definition, the
2499 processor independent code will have arranged for us to see the
2500 real definition first, and we can just use the same value. */
f6e332e6 2501 if (h->u.weakdef != NULL)
252b5132 2502 {
f6e332e6
AM		 2503 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2504 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2505 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2506 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2507 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2508 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2509 return TRUE;
252b5132
RH		 2510 }
2511
2512 /* This is a reference to a symbol defined by a dynamic object which
2513 is not a function. */
2514
2515 /* If we are creating a shared library, we must presume that the
2516 only references to the symbol are via the global offset table.
2517 For such cases we need not do anything here; the relocations will
2518 be handled correctly by relocate_section. */
0e1862bb 2519 if (!bfd_link_executable (info))
b34976b6 2520 return TRUE;
252b5132 2521
7843f00e 2522 /* If there are no references to this symbol that do not use the
d5597ebc
L		 2523 GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
2524 reloc. */
2525 eh = (struct elf_i386_link_hash_entry *) h;
2526 if (!h->non_got_ref && !eh->gotoff_ref)
b34976b6 2527 return TRUE;
7843f00e 2528
8bd621d8
AM		 2529 /* If -z nocopyreloc was given, we won't generate them either. */
2530 if (info->nocopyreloc)
2531 {
f5385ebf 2532 h->non_got_ref = 0;
b34976b6 2533 return TRUE;
8bd621d8
AM		 2534 }
2535
643796e3 2536 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2537 if (htab == NULL)
2538 return FALSE;
643796e3 2539
d5597ebc
L		 2540 /* If there aren't any dynamic relocs in read-only sections nor
2541 R_386_GOTOFF relocation, then we can keep the dynamic relocs and
2542 avoid the copy reloc. This doesn't work on VxWorks, where we can
2543 not have dynamic relocations (other than copy and jump slot
2544 relocations) in an executable. */
23209a78 2545 if (ELIMINATE_COPY_RELOCS
d5597ebc 2546 && !eh->gotoff_ref
23209a78 2547 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2548 {
a23b6845
AM		 2549 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2550 {
2551 s = p->sec->output_section;
2552 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2553 break;
2554 }
2555
a23b6845
AM		 2556 if (p == NULL)
2557 {
f5385ebf 2558 h->non_got_ref = 0;
a23b6845
AM		 2559 return TRUE;
2560 }
ebe50bae
AM		 2561 }
2562
252b5132
RH		 2563 /* We must allocate the symbol in our .dynbss section, which will
2564 become part of the .bss section of the executable. There will be
2565 an entry for this symbol in the .dynsym section. The dynamic
2566 object will contain position independent code, so all references
2567 from the dynamic object to this symbol will go through the global
2568 offset table. The dynamic linker will use the .dynsym entry to
2569 determine the address it must put in the global offset table, so
2570 both the dynamic object and the regular object will refer to the
2571 same memory location for the variable. */
2572
252b5132
RH		 2573 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2574 copy the initial value out of the dynamic object and into the
0ac8d2ca 2575 runtime process image. */
1d7e9d18 2576 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2577 {
eea6121a 2578 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2579 h->needs_copy = 1;
252b5132
RH		 2580 }
2581
0ac8d2ca 2582 s = htab->sdynbss;
252b5132 2583
6cabe1ea 2584 return _bfd_elf_adjust_dynamic_copy (info, h, s);
252b5132
RH		 2585}
2586
6725bdbf 2587/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2588 dynamic relocs. */
6725bdbf 2589
b34976b6 2590static bfd_boolean
eb4ff4d6 2591elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2592{
2593 struct bfd_link_info *info;
2594 struct elf_i386_link_hash_table *htab;
5a15f56f 2595 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2596 struct elf_dyn_relocs *p;
25e762b9 2597 unsigned plt_entry_size;
aec6b87e 2598 bfd_boolean resolved_to_zero;
6725bdbf 2599
e92d460e 2600 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2601 return TRUE;
6725bdbf 2602
cbe950e9 2603 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2604
6725bdbf
AM		 2605 info = (struct bfd_link_info *) inf;
2606 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2607 if (htab == NULL)
2608 return FALSE;
6725bdbf 2609
25e762b9
RM		 2610 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2611
e62b9723
L		 2612 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
2613 eh->has_got_reloc,
2614 eh);
aec6b87e 2615
04ebc307
L		 2616 /* Clear the reference count of function pointer relocations if
2617 symbol isn't a normal function. */
2618 if (h->type != STT_FUNC)
2619 eh->func_pointer_refcount = 0;
2620
dd7e64d4
L		 2621 /* We can't use the GOT PLT if pointer equality is needed since
2622 finish_dynamic_symbol won't clear symbol value and the dynamic
2623 linker won't update the GOT slot. We will get into an infinite
2624 loop at run-time. */
2625 if (htab->plt_got != NULL
2626 && h->type != STT_GNU_IFUNC
2627 && !h->pointer_equality_needed
2628 && h->plt.refcount > 0
2629 && h->got.refcount > 0)
2630 {
2631 /* Don't use the regular PLT if there are both GOT and GOTPLT
2632 reloctions. */
2633 h->plt.offset = (bfd_vma) -1;
2634
2635 /* Use the GOT PLT. */
2636 eh->plt_got.refcount = 1;
2637 }
2638
cbe950e9
L		 2639 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2640 here if it is defined and referenced in a non-shared object. */
2641 if (h->type == STT_GNU_IFUNC
2642 && h->def_regular)
25e762b9 2643 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
2df3368d
L		 2644 &htab->readonly_dynrelocs_against_ifunc,
2645 plt_entry_size,
7b70956d 2646 plt_entry_size, 4);
04ebc307
L		 2647 /* Don't create the PLT entry if there are only function pointer
2648 relocations which can be resolved at run-time. */
cbe950e9 2649 else if (htab->elf.dynamic_sections_created
04ebc307
L		 2650 && (h->plt.refcount > eh->func_pointer_refcount
2651 || eh->plt_got.refcount > 0))
6725bdbf 2652 {
25070364
L		 2653 bfd_boolean use_plt_got;
2654
04ebc307
L		 2655 /* Clear the reference count of function pointer relocations
2656 if PLT is used. */
2657 eh->func_pointer_refcount = 0;
2658
8ded2ddc 2659 if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
25070364
L		 2660 {
2661 /* Don't use the regular PLT for DF_BIND_NOW. */
2662 h->plt.offset = (bfd_vma) -1;
2663
2664 /* Use the GOT PLT. */
2665 h->got.refcount = 1;
2666 eh->plt_got.refcount = 1;
2667 }
2668
2669 use_plt_got = eh->plt_got.refcount > 0;
dd7e64d4 2670
5a15f56f
AM		 2671 /* Make sure this symbol is output as a dynamic symbol.
2672 Undefined weak syms won't yet be marked as dynamic. */
2673 if (h->dynindx == -1
aec6b87e
L		 2674 && !h->forced_local
2675 && !resolved_to_zero)
5a15f56f 2676 {
c152c796 2677 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2678 return FALSE;
5a15f56f
AM		 2679 }
2680
0e1862bb 2681 if (bfd_link_pic (info)
4e795f50 2682 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2683 {
6de2ae4a 2684 asection *s = htab->elf.splt;
dd7e64d4 2685 asection *got_s = htab->plt_got;
6725bdbf 2686
7c1e8d3e
L		 2687 /* If this is the first .plt entry, make room for the special
2688 first entry. The .plt section is used by prelink to undo
2689 prelinking for dynamic relocations. */
2690 if (s->size == 0)
2691 s->size = plt_entry_size;
2692
dd7e64d4
L		 2693 if (use_plt_got)
2694 eh->plt_got.offset = got_s->size;
2695 else
7c1e8d3e 2696 h->plt.offset = s->size;
6725bdbf 2697
ced53ee5
AM		 2698 /* If this symbol is not defined in a regular file, and we are
2699 not generating a shared library, then set the symbol to this
2700 location in the .plt. This is required to make function
2701 pointers compare as equal between the normal executable and
2702 the shared library. */
0e1862bb 2703 if (! bfd_link_pic (info)
f5385ebf 2704 && !h->def_regular)
ced53ee5 2705 {
dd7e64d4
L		 2706 if (use_plt_got)
2707 {
2708 /* We need to make a call to the entry of the GOT PLT
2709 instead of regular PLT entry. */
2710 h->root.u.def.section = got_s;
2711 h->root.u.def.value = eh->plt_got.offset;
2712 }
2713 else
2714 {
2715 h->root.u.def.section = s;
2716 h->root.u.def.value = h->plt.offset;
2717 }
ced53ee5 2718 }
6725bdbf 2719
ced53ee5 2720 /* Make room for this entry. */
dd7e64d4
L		 2721 if (use_plt_got)
2722 got_s->size += sizeof (elf_i386_got_plt_entry);
2723 else
2724 {
2725 s->size += plt_entry_size;
6725bdbf 2726
dd7e64d4
L		 2727 /* We also need to make an entry in the .got.plt section,
2728 which will be placed in the .got section by the linker
2729 script. */
2730 htab->elf.sgotplt->size += 4;
6725bdbf 2731
aec6b87e
L		 2732 /* There should be no PLT relocation against resolved
2733 undefined weak symbol in executable. */
2734 if (!resolved_to_zero)
2735 {
2736 /* We also need to make an entry in the .rel.plt
2737 section. */
2738 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2739 htab->elf.srelplt->reloc_count++;
2740 }
dd7e64d4 2741 }
eac338cf 2742
23209a78 2743 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
0e1862bb 2744 && !bfd_link_pic (info))
eac338cf
PB		 2745 {
2746 /* VxWorks has a second set of relocations for each PLT entry
2747 in executables. They go in a separate relocation section,
2748 which is processed by the kernel loader. */
2749
2750 /* There are two relocations for the initial PLT entry: an
2751 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2752 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2753
25e762b9 2754 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2755 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2756
2757 /* There are two extra relocations for each subsequent PLT entry:
2758 an R_386_32 relocation for the GOT entry, and an R_386_32
2759 relocation for the PLT entry. */
2760
2761 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2762 }
6725bdbf 2763 }
ced53ee5
AM		 2764 else
2765 {
13f42277 2766 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2767 h->plt.offset = (bfd_vma) -1;
f5385ebf 2768 h->needs_plt = 0;
ced53ee5 2769 }
6725bdbf
AM		 2770 }
2771 else
2772 {
13f42277 2773 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2774 h->plt.offset = (bfd_vma) -1;
f5385ebf 2775 h->needs_plt = 0;
6725bdbf
AM		 2776 }
2777
67a4f2b7
AO		 2778 eh->tlsdesc_got = (bfd_vma) -1;
2779
37e55690 2780 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2781 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2782 if (h->got.refcount > 0
0e1862bb 2783 && bfd_link_executable (info)
13ae64f3 2784 && h->dynindx == -1
37e55690 2785 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2786 h->got.offset = (bfd_vma) -1;
13ae64f3 2787 else if (h->got.refcount > 0)
6725bdbf 2788 {
0ac8d2ca 2789 asection *s;
b34976b6 2790 bfd_boolean dyn;
13ae64f3 2791 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2792
5a15f56f
AM		 2793 /* Make sure this symbol is output as a dynamic symbol.
2794 Undefined weak syms won't yet be marked as dynamic. */
2795 if (h->dynindx == -1
aec6b87e
L		 2796 && !h->forced_local
2797 && !resolved_to_zero)
5a15f56f 2798 {
c152c796 2799 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2800 return FALSE;
5a15f56f
AM		 2801 }
2802
6de2ae4a 2803 s = htab->elf.sgot;
67a4f2b7
AO		 2804 if (GOT_TLS_GDESC_P (tls_type))
2805 {
6de2ae4a 2806 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2807 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2808 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2809 h->got.offset = (bfd_vma) -2;
2810 }
2811 if (! GOT_TLS_GDESC_P (tls_type)
2812 || GOT_TLS_GD_P (tls_type))
2813 {
2814 h->got.offset = s->size;
2815 s->size += 4;
2816 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2817 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2818 s->size += 4;
2819 }
ebe50bae 2820 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2821 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2822 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2823 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2824 need two), R_386_TLS_GD needs one if local symbol and two if
aec6b87e
L		 2825 global. No dynamic relocation against resolved undefined weak
2826 symbol in executable. */
37e55690 2827 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2828 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2829 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2830 || (tls_type & GOT_TLS_IE))
6de2ae4a 2831 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2832 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2833 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2834 else if (! GOT_TLS_GDESC_P (tls_type)
aec6b87e
L		 2835 && ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2836 && !resolved_to_zero)
67a4f2b7 2837 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 2838 && (bfd_link_pic (info)
ef5aade5 2839 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2840 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2841 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2842 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2843 }
2844 else
51b64d56 2845 h->got.offset = (bfd_vma) -1;
6725bdbf 2846
5a15f56f 2847 if (eh->dyn_relocs == NULL)
b34976b6 2848 return TRUE;
5a15f56f 2849
0c715baa
AM		 2850 /* In the shared -Bsymbolic case, discard space allocated for
2851 dynamic pc-relative relocs against symbols which turn out to be
2852 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2853 space for pc-relative relocs that have become local due to symbol
2854 visibility changes. */
0c715baa 2855
0e1862bb 2856 if (bfd_link_pic (info))
5a15f56f 2857 {
09695f56
AM		 2858 /* The only reloc that uses pc_count is R_386_PC32, which will
2859 appear on a call or on something like ".long foo - .". We
2860 want calls to protected symbols to resolve directly to the
2861 function rather than going via the plt. If people want
2862 function pointer comparisons to work as expected then they
2863 should avoid writing assembly like ".long foo - .". */
2864 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2865 {
e03a8ed8 2866 struct elf_dyn_relocs **pp;
0c715baa
AM		 2867
2868 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2869 {
c3ce498c
L		 2870 p->count -= p->pc_count;
2871 p->pc_count = 0;
0c715baa
AM		 2872 if (p->count == 0)
2873 *pp = p->next;
2874 else
2875 pp = &p->next;
2876 }
5a15f56f 2877 }
4e795f50 2878
23209a78 2879 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2880 {
e03a8ed8 2881 struct elf_dyn_relocs **pp;
3348747a
NS		 2882 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2883 {
2884 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2885 *pp = p->next;
2886 else
2887 pp = &p->next;
2888 }
2889 }
2890
4e795f50 2891 /* Also discard relocs on undefined weak syms with non-default
aec6b87e 2892 visibility or in PIE. */
22d606e9 2893 if (eh->dyn_relocs != NULL
c353e543 2894 && h->root.type == bfd_link_hash_undefweak)
22d606e9 2895 {
aec6b87e
L		 2896 /* Undefined weak symbol is never bound locally in shared
2897 library. */
2898 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2899 || resolved_to_zero)
2900 {
2901 if (h->non_got_ref)
2902 {
2903 /* Keep dynamic non-GOT/non-PLT relocation so that we
2904 can branch to 0 without PLT. */
2905 struct elf_dyn_relocs **pp;
2906
2907 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2908 if (p->pc_count == 0)
2909 *pp = p->next;
2910 else
2911 {
2912 /* Remove non-R_386_PC32 relocation. */
2913 p->count = p->pc_count;
2914 pp = &p->next;
2915 }
22d606e9 2916
aec6b87e
L		 2917 if (eh->dyn_relocs != NULL)
2918 {
2919 /* Make sure undefined weak symbols are output
2920 as dynamic symbols in PIEs for dynamic non-GOT
2921 non-PLT reloations. */
2922 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2923 return FALSE;
2924 }
2925 }
2926 else
2927 eh->dyn_relocs = NULL;
2928 }
22d606e9
AM		 2929 else if (h->dynindx == -1
2930 && !h->forced_local)
2931 {
2932 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2933 return FALSE;
2934 }
2935 }
0c715baa 2936 }
a23b6845 2937 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2938 {
2939 /* For the non-shared case, discard space for relocs against
2940 symbols which turn out to need copy relocs or are not
04ebc307
L		 2941 dynamic. Keep dynamic relocations for run-time function
2942 pointer initialization. */
0c715baa 2943
aec6b87e
L		 2944 if ((!h->non_got_ref
2945 || eh->func_pointer_refcount > 0
2946 || (h->root.type == bfd_link_hash_undefweak
2947 && !resolved_to_zero))
f5385ebf
AM		 2948 && ((h->def_dynamic
2949 && !h->def_regular)
ebe50bae 2950 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2951 && (h->root.type == bfd_link_hash_undefweak
2952 || h->root.type == bfd_link_hash_undefined))))
2953 {
2954 /* Make sure this symbol is output as a dynamic symbol.
2955 Undefined weak syms won't yet be marked as dynamic. */
2956 if (h->dynindx == -1
aec6b87e
L		 2957 && !h->forced_local
2958 && !resolved_to_zero)
0c715baa 2959 {
c152c796 2960 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2961 return FALSE;
0c715baa 2962 }
5a15f56f 2963
0c715baa
AM		 2964 /* If that succeeded, we know we'll be keeping all the
2965 relocs. */
2966 if (h->dynindx != -1)
2967 goto keep;
2968 }
2969
2970 eh->dyn_relocs = NULL;
04ebc307 2971 eh->func_pointer_refcount = 0;
0c715baa 2972
ec338859 2973 keep: ;
5a15f56f
AM		 2974 }
2975
0c715baa
AM		 2976 /* Finally, allocate space. */
2977 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2978 {
e7c33416
NC		 2979 asection *sreloc;
2980
cbe950e9 2981 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2982
2983 BFD_ASSERT (sreloc != NULL);
eea6121a 2984 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2985 }
2986
b34976b6 2987 return TRUE;
6725bdbf
AM		 2988}
2989
c25bc9fc
L		 2990/* Allocate space in .plt, .got and associated reloc sections for
2991 local dynamic relocs. */
2992
2993static bfd_boolean
2994elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2995{
2996 struct elf_link_hash_entry *h
2997 = (struct elf_link_hash_entry *) *slot;
2998
2999 if (h->type != STT_GNU_IFUNC
3000 || !h->def_regular
3001 || !h->ref_regular
3002 || !h->forced_local
3003 || h->root.type != bfd_link_hash_defined)
3004 abort ();
3005
3006 return elf_i386_allocate_dynrelocs (h, inf);
3007}
3008
0c715baa
AM		 3009/* Find any dynamic relocs that apply to read-only sections. */
3010
b34976b6 3011static bfd_boolean
eb4ff4d6 3012elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 3013{
3014 struct elf_i386_link_hash_entry *eh;
e03a8ed8 3015 struct elf_dyn_relocs *p;
0c715baa 3016
aa715242
L		 3017 /* Skip local IFUNC symbols. */
3018 if (h->forced_local && h->type == STT_GNU_IFUNC)
3019 return TRUE;
3020
0c715baa
AM		 3021 eh = (struct elf_i386_link_hash_entry *) h;
3022 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3023 {
3024 asection *s = p->sec->output_section;
3025
3026 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3027 {
3028 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3029
3030 info->flags |= DF_TEXTREL;
3031
0e1862bb 3032 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 3033 || info->error_textrel)
3034 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L		 3035 p->sec->owner, h->root.root.string,
3036 p->sec);
3037
0c715baa 3038 /* Not an error, just cut short the traversal. */
b34976b6 3039 return FALSE;
0c715baa
AM		 3040 }
3041 }
b34976b6 3042 return TRUE;
0c715baa
AM		 3043}
3044
c175a657 3045/* Convert load via the GOT slot to load immediate. */
daa67607
L		 3046
3047static bfd_boolean
02a86693 3048elf_i386_convert_load (bfd *abfd, asection *sec,
a6af384b 3049 struct bfd_link_info *link_info)
daa67607 3050{
c175a657 3051 struct elf_i386_link_hash_table *htab;
daa67607
L		 3052 Elf_Internal_Shdr *symtab_hdr;
3053 Elf_Internal_Rela *internal_relocs;
3054 Elf_Internal_Rela *irel, *irelend;
3055 bfd_byte *contents;
c175a657 3056 bfd_boolean changed;
daa67607
L		 3057 bfd_signed_vma *local_got_refcounts;
3058
3059 /* Don't even try to convert non-ELF outputs. */
3060 if (!is_elf_hash_table (link_info->hash))
3061 return FALSE;
3062
c1d11331 3063 /* Nothing to do if there is no need or no output. */
daa67607 3064 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
02a86693 3065 || sec->need_convert_load == 0
c8831961 3066 || bfd_is_abs_section (sec->output_section))
daa67607
L		 3067 return TRUE;
3068
3069 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3070
3071 /* Load the relocations for this section. */
3072 internal_relocs = (_bfd_elf_link_read_relocs
3073 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
3074 link_info->keep_memory));
3075 if (internal_relocs == NULL)
3076 return FALSE;
3077
c175a657 3078 changed = FALSE;
daa67607 3079 htab = elf_i386_hash_table (link_info);
daa67607
L		 3080 local_got_refcounts = elf_local_got_refcounts (abfd);
3081
3082 /* Get the section contents. */
3083 if (elf_section_data (sec)->this_hdr.contents != NULL)
3084 contents = elf_section_data (sec)->this_hdr.contents;
3085 else
3086 {
3087 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
3088 goto error_return;
3089 }
3090
3091 irelend = internal_relocs + sec->reloc_count;
3092 for (irel = internal_relocs; irel < irelend; irel++)
3093 {
3094 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
c175a657 3095 unsigned int r_symndx;
daa67607 3096 struct elf_link_hash_entry *h;
c175a657 3097 bfd_boolean converted;
daa67607 3098
7d4d9709
L		 3099 /* Don't convert R_386_GOT32 since we can't tell if it is applied
3100 to "mov $foo@GOT, %reg" which isn't a load via GOT. */
3101 if (r_type != R_386_GOT32X)
daa67607
L		 3102 continue;
3103
c175a657 3104 r_symndx = ELF32_R_SYM (irel->r_info);
02a86693 3105 if (r_symndx < symtab_hdr->sh_info)
c175a657
L		 3106 h = elf_i386_get_local_sym_hash (htab, sec->owner,
3107 (const Elf_Internal_Rela *) irel,
3108 FALSE);
3109 else
02a86693 3110 {
c175a657
L		 3111 h = elf_sym_hashes (abfd)[r_symndx - symtab_hdr->sh_info];
3112 while (h->root.type == bfd_link_hash_indirect
3113 || h->root.type == bfd_link_hash_warning)
3114 h = (struct elf_link_hash_entry *) h->root.u.i.link;
daa67607
L		 3115 }
3116
02a86693 3117 /* STT_GNU_IFUNC must keep GOT32 relocations. */
c175a657 3118 if (h != NULL && h->type == STT_GNU_IFUNC)
02a86693
L		 3119 continue;
3120
c175a657
L		 3121 converted = FALSE;
3122 if (!elf_i386_convert_load_reloc (abfd, symtab_hdr, contents,
3123 irel, h, &converted, link_info))
3124 goto error_return;
bae420ef 3125
c175a657 3126 if (converted)
02a86693 3127 {
c175a657
L		 3128 changed = converted;
3129 if (h)
02a86693 3130 {
c175a657
L		 3131 if (h->got.refcount > 0)
3132 h->got.refcount -= 1;
02a86693 3133 }
c175a657 3134 else
02a86693 3135 {
c175a657
L		 3136 if (local_got_refcounts != NULL
3137 && local_got_refcounts[r_symndx] > 0)
3138 local_got_refcounts[r_symndx] -= 1;
02a86693 3139 }
daa67607
L		 3140 }
3141 }
3142
3143 if (contents != NULL
3144 && elf_section_data (sec)->this_hdr.contents != contents)
3145 {
c175a657 3146 if (!changed && !link_info->keep_memory)
daa67607
L		 3147 free (contents);
3148 else
3149 {
3150 /* Cache the section contents for elf_link_input_bfd. */
3151 elf_section_data (sec)->this_hdr.contents = contents;
3152 }
3153 }
3154
3155 if (elf_section_data (sec)->relocs != internal_relocs)
3156 {
c175a657 3157 if (!changed)
daa67607
L		 3158 free (internal_relocs);
3159 else
3160 elf_section_data (sec)->relocs = internal_relocs;
3161 }
3162
3163 return TRUE;
3164
3165 error_return:
3166 if (contents != NULL
3167 && elf_section_data (sec)->this_hdr.contents != contents)
3168 free (contents);
3169 if (internal_relocs != NULL
3170 && elf_section_data (sec)->relocs != internal_relocs)
3171 free (internal_relocs);
3172 return FALSE;
3173}
3174
252b5132
RH		 3175/* Set the sizes of the dynamic sections. */
3176
b34976b6 3177static bfd_boolean
23209a78 3178elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 3179{
6725bdbf 3180 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3181 bfd *dynobj;
3182 asection *s;
b34976b6 3183 bfd_boolean relocs;
0c715baa 3184 bfd *ibfd;
252b5132 3185
6725bdbf 3186 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3187 if (htab == NULL)
3188 return FALSE;
ebe50bae 3189 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 3190 if (dynobj == NULL)
3191 abort ();
252b5132 3192
0c715baa
AM		 3193 /* Set up .got offsets for local syms, and space for local dynamic
3194 relocs. */
c72f2fb2 3195 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
161d71a6
L		 3196 {
3197 bfd_signed_vma *local_got;
3198 bfd_signed_vma *end_local_got;
13ae64f3 3199 char *local_tls_type;
67a4f2b7 3200 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 3201 bfd_size_type locsymcount;
3202 Elf_Internal_Shdr *symtab_hdr;
3203 asection *srel;
6725bdbf 3204
0ffa91dd 3205 if (! is_i386_elf (ibfd))
161d71a6 3206 continue;
6725bdbf 3207
0c715baa
AM		 3208 for (s = ibfd->sections; s != NULL; s = s->next)
3209 {
e03a8ed8 3210 struct elf_dyn_relocs *p;
0c715baa 3211
02a86693 3212 if (!elf_i386_convert_load (ibfd, s, info))
daa67607
L		 3213 return FALSE;
3214
e03a8ed8 3215 for (p = ((struct elf_dyn_relocs *)
e81d3500 3216 elf_section_data (s)->local_dynrel);
ec338859
AM		 3217 p != NULL;
3218 p = p->next)
0c715baa 3219 {
ec338859
AM		 3220 if (!bfd_is_abs_section (p->sec)
3221 && bfd_is_abs_section (p->sec->output_section))
3222 {
3223 /* Input section has been discarded, either because
3224 it is a copy of a linkonce section or due to
3225 linker script /DISCARD/, so we'll be discarding
3226 the relocs too. */
3227 }
23209a78 3228 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 3229 && strcmp (p->sec->output_section->name,
3230 ".tls_vars") == 0)
3231 {
3232 /* Relocations in vxworks .tls_vars sections are
3233 handled specially by the loader. */
3234 }
248866a8 3235 else if (p->count != 0)
ec338859
AM		 3236 {
3237 srel = elf_section_data (p->sec)->sreloc;
eea6121a 3238 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 3239 if ((p->sec->output_section->flags & SEC_READONLY) != 0
3240 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 3241 {
3242 info->flags |= DF_TEXTREL;
0e1862bb 3243 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 3244 || info->error_textrel)
3245 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 3246 p->sec->owner, p->sec);
b70321a2 3247 }
ec338859 3248 }
0c715baa
AM		 3249 }
3250 }
3251
3252 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 3253 if (!local_got)
3254 continue;
6725bdbf 3255
0ffa91dd 3256 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 3257 locsymcount = symtab_hdr->sh_info;
3258 end_local_got = local_got + locsymcount;
13ae64f3 3259 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 3260 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 3261 s = htab->elf.sgot;
3262 srel = htab->elf.srelgot;
67a4f2b7
AO		 3263 for (; local_got < end_local_got;
3264 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 3265 {
67a4f2b7 3266 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 3267 if (*local_got > 0)
6725bdbf 3268 {
67a4f2b7
AO		 3269 if (GOT_TLS_GDESC_P (*local_tls_type))
3270 {
6de2ae4a 3271 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 3272 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 3273 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 3274 *local_got = (bfd_vma) -2;
3275 }
3276 if (! GOT_TLS_GDESC_P (*local_tls_type)
3277 || GOT_TLS_GD_P (*local_tls_type))
3278 {
3279 *local_got = s->size;
3280 s->size += 4;
3281 if (GOT_TLS_GD_P (*local_tls_type)
3282 || *local_tls_type == GOT_TLS_IE_BOTH)
3283 s->size += 4;
3284 }
0e1862bb 3285 if (bfd_link_pic (info)
67a4f2b7 3286 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 3287 || (*local_tls_type & GOT_TLS_IE))
3288 {
3289 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 3290 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 3291 else if (GOT_TLS_GD_P (*local_tls_type)
3292 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 3293 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 3294 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 3295 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 3296 }
6725bdbf 3297 }
161d71a6
L		 3298 else
3299 *local_got = (bfd_vma) -1;
6725bdbf 3300 }
252b5132 3301 }
6725bdbf 3302
13ae64f3
JJ		 3303 if (htab->tls_ldm_got.refcount > 0)
3304 {
3305 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
3306 relocs. */
6de2ae4a
L		 3307 htab->tls_ldm_got.offset = htab->elf.sgot->size;
3308 htab->elf.sgot->size += 8;
3309 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 3310 }
3311 else
3312 htab->tls_ldm_got.offset = -1;
3313
0c715baa
AM		 3314 /* Allocate global sym .plt and .got entries, and space for global
3315 sym dynamic relocs. */
eb4ff4d6 3316 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 3317
c25bc9fc
L		 3318 /* Allocate .plt and .got entries, and space for local symbols. */
3319 htab_traverse (htab->loc_hash_table,
3320 elf_i386_allocate_local_dynrelocs,
3321 info);
3322
67a4f2b7
AO		 3323 /* For every jump slot reserved in the sgotplt, reloc_count is
3324 incremented. However, when we reserve space for TLS descriptors,
3325 it's not incremented, so in order to compute the space reserved
3326 for them, it suffices to multiply the reloc count by the jump
e1f98742 3327 slot size.
caa0075c 3328
e1f98742
L		 3329 PR ld/13302: We start next_irelative_index at the end of .rela.plt
3330 so that R_386_IRELATIVE entries come last. */
6de2ae4a 3331 if (htab->elf.srelplt)
e1f98742
L		 3332 {
3333 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
3334 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
3335 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
3336 }
3337 else if (htab->elf.irelplt)
3338 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
3339
67a4f2b7 3340
a7b16ceb
L		 3341 if (htab->elf.sgotplt)
3342 {
3343 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 3344 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 3345 if ((htab->elf.hgot == NULL
3346 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 3347 && (htab->elf.sgotplt->size
3348 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 3349 && (htab->elf.splt == NULL
3350 || htab->elf.splt->size == 0)
3351 && (htab->elf.sgot == NULL
3352 || htab->elf.sgot->size == 0)
3353 && (htab->elf.iplt == NULL
3354 || htab->elf.iplt->size == 0)
3355 && (htab->elf.igotplt == NULL
3356 || htab->elf.igotplt->size == 0))
3357 htab->elf.sgotplt->size = 0;
3358 }
3359
9a2a56cc
AM		 3360
3361 if (htab->plt_eh_frame != NULL
3362 && htab->elf.splt != NULL
3363 && htab->elf.splt->size != 0
3364 && !bfd_is_abs_section (htab->elf.splt->output_section)
3365 && _bfd_elf_eh_frame_present (info))
3366 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
3367
5a15f56f
AM		 3368 /* We now have determined the sizes of the various dynamic sections.
3369 Allocate memory for them. */
b34976b6 3370 relocs = FALSE;
252b5132
RH		 3371 for (s = dynobj->sections; s != NULL; s = s->next)
3372 {
eac338cf
PB		 3373 bfd_boolean strip_section = TRUE;
3374
252b5132
RH		 3375 if ((s->flags & SEC_LINKER_CREATED) == 0)
3376 continue;
3377
6de2ae4a 3378 if (s == htab->elf.splt
9a2a56cc 3379 || s == htab->elf.sgot)
252b5132 3380 {
6725bdbf
AM		 3381 /* Strip this section if we don't need it; see the
3382 comment below. */
eac338cf
PB		 3383 /* We'd like to strip these sections if they aren't needed, but if
3384 we've exported dynamic symbols from them we must leave them.
3385 It's too late to tell BFD to get rid of the symbols. */
3386
7325306f 3387 if (htab->elf.hplt != NULL)
eac338cf 3388 strip_section = FALSE;
252b5132 3389 }
9a2a56cc
AM		 3390 else if (s == htab->elf.sgotplt
3391 || s == htab->elf.iplt
3392 || s == htab->elf.igotplt
dd7e64d4 3393 || s == htab->plt_got
9a2a56cc
AM		 3394 || s == htab->plt_eh_frame
3395 || s == htab->sdynbss)
3396 {
3397 /* Strip these too. */
3398 }
0112cd26 3399 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 3400 {
6de2ae4a
L		 3401 if (s->size != 0
3402 && s != htab->elf.srelplt
3403 && s != htab->srelplt2)
b34976b6 3404 relocs = TRUE;
252b5132 3405
0ac8d2ca
AM		 3406 /* We use the reloc_count field as a counter if we need
3407 to copy relocs into the output file. */
5ae0bfb6 3408 s->reloc_count = 0;
252b5132 3409 }
6725bdbf 3410 else
252b5132
RH		 3411 {
3412 /* It's not one of our sections, so don't allocate space. */
3413 continue;
3414 }
3415
c456f082 3416 if (s->size == 0)
252b5132 3417 {
0ac8d2ca
AM		 3418 /* If we don't need this section, strip it from the
3419 output file. This is mostly to handle .rel.bss and
3420 .rel.plt. We must create both sections in
3421 create_dynamic_sections, because they must be created
3422 before the linker maps input sections to output
3423 sections. The linker does that before
3424 adjust_dynamic_symbol is called, and it is that
3425 function which decides whether anything needs to go
3426 into these sections. */
c456f082
AM		 3427 if (strip_section)
3428 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3429 continue;
3430 }
3431
c456f082
AM		 3432 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3433 continue;
3434
f69da49f
AM		 3435 /* Allocate memory for the section contents. We use bfd_zalloc
3436 here in case unused entries are not reclaimed before the
3437 section's contents are written out. This should not happen,
3438 but this way if it does, we get a R_386_NONE reloc instead
3439 of garbage. */
a50b1753 3440 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 3441 if (s->contents == NULL)
b34976b6 3442 return FALSE;
252b5132
RH		 3443 }
3444
e41b3a13 3445 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3446 && htab->plt_eh_frame->contents != NULL)
3447 {
3448 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
3449 sizeof (elf_i386_eh_frame_plt));
3450 bfd_put_32 (dynobj, htab->elf.splt->size,
3451 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3452 }
e41b3a13 3453
ebe50bae 3454 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3455 {
3456 /* Add some entries to the .dynamic section. We fill in the
3457 values later, in elf_i386_finish_dynamic_sections, but we
3458 must add the entries now so that we get the correct size for
3459 the .dynamic section. The DT_DEBUG entry is filled in by the
3460 dynamic linker and used by the debugger. */
dc810e39 3461#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3462 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3463
0e1862bb 3464 if (bfd_link_executable (info))
252b5132 3465 {
dc810e39 3466 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3467 return FALSE;
252b5132
RH		 3468 }
3469
6de2ae4a 3470 if (htab->elf.splt->size != 0)
252b5132 3471 {
7c1e8d3e
L		 3472 /* DT_PLTGOT is used by prelink even if there is no PLT
3473 relocation. */
3474 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 3475 return FALSE;
7c1e8d3e
L		 3476
3477 if (htab->elf.srelplt->size != 0)
3478 {
3479 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3480 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3481 || !add_dynamic_entry (DT_JMPREL, 0))
3482 return FALSE;
3483 }
252b5132
RH		 3484 }
3485
3486 if (relocs)
3487 {
dc810e39
AM		 3488 if (!add_dynamic_entry (DT_REL, 0)
3489 || !add_dynamic_entry (DT_RELSZ, 0)
3490 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3491 return FALSE;
252b5132 3492
0c715baa
AM		 3493 /* If any dynamic relocs apply to a read-only section,
3494 then we need a DT_TEXTREL entry. */
248866a8 3495 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3496 elf_link_hash_traverse (&htab->elf,
3497 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3498
3499 if ((info->flags & DF_TEXTREL) != 0)
3500 {
2df3368d 3501 if (htab->readonly_dynrelocs_against_ifunc)
8efa2874
L		 3502 {
3503 info->callbacks->einfo
3504 (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
3505 bfd_set_error (bfd_error_bad_value);
3506 return FALSE;
3507 }
3508
0c715baa 3509 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3510 return FALSE;
0c715baa 3511 }
252b5132 3512 }
23209a78 3513 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3514 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3515 return FALSE;
252b5132 3516 }
dc810e39 3517#undef add_dynamic_entry
252b5132 3518
b34976b6 3519 return TRUE;
252b5132
RH		 3520}
3521
67a4f2b7
AO		 3522static bfd_boolean
3523elf_i386_always_size_sections (bfd *output_bfd,
3524 struct bfd_link_info *info)
3525{
3526 asection *tls_sec = elf_hash_table (info)->tls_sec;
3527
3528 if (tls_sec)
3529 {
3530 struct elf_link_hash_entry *tlsbase;
3531
3532 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3533 "_TLS_MODULE_BASE_",
3534 FALSE, FALSE, FALSE);
3535
3536 if (tlsbase && tlsbase->type == STT_TLS)
3537 {
4dfe6ac6 3538 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3539 struct bfd_link_hash_entry *bh = NULL;
3540 const struct elf_backend_data *bed
3541 = get_elf_backend_data (output_bfd);
3542
4dfe6ac6
NC		 3543 htab = elf_i386_hash_table (info);
3544 if (htab == NULL)
3545 return FALSE;
3546
67a4f2b7
AO		 3547 if (!(_bfd_generic_link_add_one_symbol
3548 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3549 tls_sec, 0, NULL, FALSE,
3550 bed->collect, &bh)))
3551 return FALSE;
9f03412a 3552
4dfe6ac6 3553 htab->tls_module_base = bh;
9f03412a 3554
67a4f2b7
AO		 3555 tlsbase = (struct elf_link_hash_entry *)bh;
3556 tlsbase->def_regular = 1;
3557 tlsbase->other = STV_HIDDEN;
576fa883 3558 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3559 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3560 }
3561 }
3562
3563 return TRUE;
3564}
3565
38701953
AM		 3566/* Set the correct type for an x86 ELF section. We do this by the
3567 section name, which is a hack, but ought to work. */
3568
b34976b6 3569static bfd_boolean
55fd94b0
AM		 3570elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3571 Elf_Internal_Shdr *hdr,
3572 asection *sec)
38701953 3573{
91d6fa6a 3574 const char *name;
38701953
AM		 3575
3576 name = bfd_get_section_name (abfd, sec);
3577
3578 /* This is an ugly, but unfortunately necessary hack that is
3579 needed when producing EFI binaries on x86. It tells
3580 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3581 containing ELF relocation info. We need this hack in order to
3582 be able to generate ELF binaries that can be translated into
3583 EFI applications (which are essentially COFF objects). Those
3584 files contain a COFF ".reloc" section inside an ELFNN object,
3585 which would normally cause BFD to segfault because it would
3586 attempt to interpret this section as containing relocation
3587 entries for section "oc". With this hack enabled, ".reloc"
3588 will be treated as a normal data section, which will avoid the
3589 segfault. However, you won't be able to create an ELFNN binary
3590 with a section named "oc" that needs relocations, but that's
3591 the kind of ugly side-effects you get when detecting section
3592 types based on their names... In practice, this limitation is
3593 unlikely to bite. */
3594 if (strcmp (name, ".reloc") == 0)
3595 hdr->sh_type = SHT_PROGBITS;
3596
b34976b6 3597 return TRUE;
38701953
AM		 3598}
3599
9f03412a
AO		 3600/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3601 executables. Rather than setting it to the beginning of the TLS
3602 section, we have to set it to the end. This function may be called
3603 multiple times, it is idempotent. */
3604
3605static void
eb4ff4d6 3606elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3607{
4dfe6ac6 3608 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3609 struct bfd_link_hash_entry *base;
3610
0e1862bb 3611 if (!bfd_link_executable (info))
9f03412a
AO		 3612 return;
3613
4dfe6ac6
NC		 3614 htab = elf_i386_hash_table (info);
3615 if (htab == NULL)
3616 return;
9f03412a 3617
4dfe6ac6
NC		 3618 base = htab->tls_module_base;
3619 if (base == NULL)
9f03412a
AO		 3620 return;
3621
4dfe6ac6 3622 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3623}
3624
13ae64f3
JJ		 3625/* Return the base VMA address which should be subtracted from real addresses
3626 when resolving @dtpoff relocation.
3627 This is PT_TLS segment p_vaddr. */
3628
3629static bfd_vma
eb4ff4d6 3630elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3631{
e1918d23
AM		 3632 /* If tls_sec is NULL, we should have signalled an error already. */
3633 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3634 return 0;
e1918d23 3635 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3636}
3637
3638/* Return the relocation value for @tpoff relocation
3639 if STT_TLS virtual address is ADDRESS. */
3640
3641static bfd_vma
eb4ff4d6 3642elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3643{
e1918d23 3644 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3645 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3646 bfd_vma static_tls_size;
13ae64f3 3647
e1918d23
AM		 3648 /* If tls_sec is NULL, we should have signalled an error already. */
3649 if (htab->tls_sec == NULL)
6a30718d 3650 return 0;
7dc98aea
RO		 3651
3652 /* Consider special static TLS alignment requirements. */
3653 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3654 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3655}
3656
252b5132
RH		 3657/* Relocate an i386 ELF section. */
3658
b34976b6 3659static bfd_boolean
55fd94b0
AM		 3660elf_i386_relocate_section (bfd *output_bfd,
3661 struct bfd_link_info *info,
3662 bfd *input_bfd,
3663 asection *input_section,
3664 bfd_byte *contents,
3665 Elf_Internal_Rela *relocs,
3666 Elf_Internal_Sym *local_syms,
3667 asection **local_sections)
252b5132 3668{
6725bdbf 3669 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3670 Elf_Internal_Shdr *symtab_hdr;
3671 struct elf_link_hash_entry **sym_hashes;
3672 bfd_vma *local_got_offsets;
67a4f2b7 3673 bfd_vma *local_tlsdesc_gotents;
252b5132 3674 Elf_Internal_Rela *rel;
60f2e42e 3675 Elf_Internal_Rela *wrel;
252b5132 3676 Elf_Internal_Rela *relend;
3348747a 3677 bfd_boolean is_vxworks_tls;
25e762b9 3678 unsigned plt_entry_size;
252b5132 3679
0ffa91dd 3680 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3681
c337a162
L		 3682 /* Skip if check_relocs failed. */
3683 if (input_section->check_relocs_failed)
3684 return FALSE;
3685
6725bdbf 3686 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3687 if (htab == NULL)
3688 return FALSE;
0ffa91dd 3689 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3690 sym_hashes = elf_sym_hashes (input_bfd);
3691 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3692 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3693 /* We have to handle relocations in vxworks .tls_vars sections
3694 specially, because the dynamic loader is 'weird'. */
23209a78 3695 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
0e1862bb 3696 && bfd_link_pic (info)
3348747a
NS		 3697 && !strcmp (input_section->output_section->name,
3698 ".tls_vars"));
252b5132 3699
eb4ff4d6 3700 elf_i386_set_tls_module_base (info);
9f03412a 3701
25e762b9
RM		 3702 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3703
60f2e42e 3704 rel = wrel = relocs;
252b5132 3705 relend = relocs + input_section->reloc_count;
60f2e42e 3706 for (; rel < relend; wrel++, rel++)
252b5132 3707 {
13ae64f3 3708 unsigned int r_type;
252b5132
RH		 3709 reloc_howto_type *howto;
3710 unsigned long r_symndx;
3711 struct elf_link_hash_entry *h;
dd7e64d4 3712 struct elf_i386_link_hash_entry *eh;
252b5132
RH		 3713 Elf_Internal_Sym *sym;
3714 asection *sec;
dd7e64d4 3715 bfd_vma off, offplt, plt_offset;
252b5132 3716 bfd_vma relocation;
b34976b6 3717 bfd_boolean unresolved_reloc;
252b5132 3718 bfd_reloc_status_type r;
1b452ec6 3719 unsigned int indx;
13ae64f3 3720 int tls_type;
1788fc08 3721 bfd_vma st_size;
dd7e64d4 3722 asection *resolved_plt;
aec6b87e 3723 bfd_boolean resolved_to_zero;
252b5132
RH		 3724
3725 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3726 if (r_type == R_386_GNU_VTINHERIT
3727 || r_type == R_386_GNU_VTENTRY)
18954b29
L		 3728 {
3729 if (wrel != rel)
3730 *wrel = *rel;
3731 continue;
3732 }
dc47f327 3733
55fd94b0 3734 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3735 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3736 >= R_386_ext - R_386_standard)
3737 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520 3738 >= R_386_ext2 - R_386_ext))
252b5132 3739 {
6ba842b6 3740 (*_bfd_error_handler)
d003868e
AM		 3741 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3742 input_bfd, input_section, r_type);
252b5132 3743 bfd_set_error (bfd_error_bad_value);
b34976b6 3744 return FALSE;
252b5132 3745 }
1b452ec6 3746 howto = elf_howto_table + indx;
252b5132
RH		 3747
3748 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3749 h = NULL;
3750 sym = NULL;
3751 sec = NULL;
b34976b6 3752 unresolved_reloc = FALSE;
252b5132
RH		 3753 if (r_symndx < symtab_hdr->sh_info)
3754 {
3755 sym = local_syms + r_symndx;
3756 sec = local_sections[r_symndx];
3757 relocation = (sec->output_section->vma
3758 + sec->output_offset
3759 + sym->st_value);
1788fc08 3760 st_size = sym->st_size;
ab96bf03
AM		 3761
3762 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3763 && ((sec->flags & SEC_MERGE) != 0
0e1862bb 3764 || (bfd_link_relocatable (info)
ab96bf03 3765 && sec->output_offset != 0)))
f8df10f4 3766 {
f8df10f4 3767 bfd_vma addend;
4a335f3d 3768 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3769
4a335f3d 3770 switch (howto->size)
f8df10f4 3771 {
4a335f3d
AM		 3772 case 0:
3773 addend = bfd_get_8 (input_bfd, where);
3774 if (howto->pc_relative)
3775 {
3776 addend = (addend ^ 0x80) - 0x80;
3777 addend += 1;
3778 }
3779 break;
3780 case 1:
3781 addend = bfd_get_16 (input_bfd, where);
3782 if (howto->pc_relative)
3783 {
3784 addend = (addend ^ 0x8000) - 0x8000;
3785 addend += 2;
3786 }
3787 break;
3788 case 2:
3789 addend = bfd_get_32 (input_bfd, where);
3790 if (howto->pc_relative)
3791 {
3792 addend = (addend ^ 0x80000000) - 0x80000000;
3793 addend += 4;
3794 }
3795 break;
3796 default:
3797 abort ();
f8df10f4
JJ		 3798 }
3799
0e1862bb 3800 if (bfd_link_relocatable (info))
ab96bf03
AM		 3801 addend += sec->output_offset;
3802 else
3803 {
3804 asection *msec = sec;
3805 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3806 addend);
3807 addend -= relocation;
3808 addend += msec->output_section->vma + msec->output_offset;
3809 }
4a335f3d
AM		 3810
3811 switch (howto->size)
3812 {
3813 case 0:
16a10388 3814 /* FIXME: overflow checks. */
4a335f3d
AM		 3815 if (howto->pc_relative)
3816 addend -= 1;
3817 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3818 break;
3819 case 1:
3820 if (howto->pc_relative)
3821 addend -= 2;
3822 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3823 break;
3824 case 2:
3825 if (howto->pc_relative)
3826 addend -= 4;
3827 bfd_put_32 (input_bfd, addend, where);
3828 break;
3829 }
f8df10f4 3830 }
0e1862bb 3831 else if (!bfd_link_relocatable (info)
1f85278f 3832 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3833 {
3834 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3835 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3836 FALSE);
c25bc9fc
L		 3837 if (h == NULL)
3838 abort ();
3839
23209a78 3840 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3841 h->root.u.def.value = sym->st_value;
3842 h->root.u.def.section = sec;
3843 }
252b5132
RH		 3844 }
3845 else
3846 {
3d540e93 3847 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3848 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3849
b2a8e766
AM		 3850 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3851 r_symndx, symtab_hdr, sym_hashes,
3852 h, sec, relocation,
62d887d4 3853 unresolved_reloc, warned, ignored);
1788fc08 3854 st_size = h->size;
252b5132
RH		 3855 }
3856
dbaa2011 3857 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 3858 {
3859 _bfd_clear_contents (howto, input_bfd, input_section,
3860 contents + rel->r_offset);
3861 wrel->r_offset = rel->r_offset;
3862 wrel->r_info = 0;
3863 wrel->r_addend = 0;
3864
3865 /* For ld -r, remove relocations in debug sections against
3866 sections defined in discarded sections. Not done for
3867 eh_frame editing code expects to be present. */
3868 if (bfd_link_relocatable (info)
3869 && (input_section->flags & SEC_DEBUGGING))
3870 wrel--;
3871
3872 continue;
3873 }
9635fe29 3874
0e1862bb 3875 if (bfd_link_relocatable (info))
2d5da473
L		 3876 {
3877 if (wrel != rel)
3878 *wrel = *rel;
3879 continue;
3880 }
ab96bf03 3881
cbe950e9
L		 3882 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3883 it here if it is defined in a non-shared object. */
3884 if (h != NULL
3885 && h->type == STT_GNU_IFUNC
3886 && h->def_regular)
3887 {
3888 asection *plt, *gotplt, *base_got;
3889 bfd_vma plt_index;
4c544807 3890 const char *name;
cbe950e9 3891
97dc35c8
L		 3892 if ((input_section->flags & SEC_ALLOC) == 0)
3893 {
3894 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3895 sections because such sections are not SEC_ALLOC and
3896 thus ld.so will not process them. */
3897 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 3898 continue;
97dc35c8
L		 3899 abort ();
3900 }
3901 else if (h->plt.offset == (bfd_vma) -1)
cbe950e9
L		 3902 abort ();
3903
3904 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3905 if (htab->elf.splt != NULL)
cbe950e9 3906 {
6de2ae4a
L		 3907 plt = htab->elf.splt;
3908 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3909 }
3910 else
3911 {
6de2ae4a
L		 3912 plt = htab->elf.iplt;
3913 gotplt = htab->elf.igotplt;
cbe950e9
L		 3914 }
3915
3916 relocation = (plt->output_section->vma
3917 + plt->output_offset + h->plt.offset);
3918
3919 switch (r_type)
3920 {
3921 default:
4c544807
L		 3922 if (h->root.root.string)
3923 name = h->root.root.string;
3924 else
3925 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3926 NULL);
cbe950e9
L		 3927 (*_bfd_error_handler)
3928 (_("%B: relocation %s against STT_GNU_IFUNC "
3929 "symbol `%s' isn't handled by %s"), input_bfd,
3930 elf_howto_table[r_type].name,
4c544807 3931 name, __FUNCTION__);
cbe950e9
L		 3932 bfd_set_error (bfd_error_bad_value);
3933 return FALSE;
3934
3935 case R_386_32:
710ab287 3936 /* Generate dynamic relcoation only when there is a
c293fa49 3937 non-GOT reference in a shared object. */
0e1862bb 3938 if (bfd_link_pic (info) && h->non_got_ref)
710ab287
L		 3939 {
3940 Elf_Internal_Rela outrel;
710ab287
L		 3941 asection *sreloc;
3942 bfd_vma offset;
3943
c25bc9fc
L		 3944 /* Need a dynamic relocation to get the real function
3945 adddress. */
710ab287
L		 3946 offset = _bfd_elf_section_offset (output_bfd,
3947 info,
3948 input_section,
3949 rel->r_offset);
3950 if (offset == (bfd_vma) -1
3951 || offset == (bfd_vma) -2)
3952 abort ();
3953
3954 outrel.r_offset = (input_section->output_section->vma
3955 + input_section->output_offset
3956 + offset);
3957
3958 if (h->dynindx == -1
44c4ea11 3959 || h->forced_local
0e1862bb 3960 || bfd_link_executable (info))
710ab287
L		 3961 {
3962 /* This symbol is resolved locally. */
56b8aada
L		 3963 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3964 bfd_put_32 (output_bfd,
3965 (h->root.u.def.value
3966 + h->root.u.def.section->output_section->vma
3967 + h->root.u.def.section->output_offset),
3968 contents + offset);
710ab287
L		 3969 }
3970 else
56b8aada 3971 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3972
6de2ae4a 3973 sreloc = htab->elf.irelifunc;
59d6ffb2 3974 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3975
3976 /* If this reloc is against an external symbol, we
3977 do not want to fiddle with the addend. Otherwise,
3978 we need to include the symbol value so that it
3979 becomes an addend for the dynamic reloc. For an
3980 internal symbol, we have updated addend. */
56b8aada 3981 continue;
710ab287 3982 }
d59a60e9 3983 /* FALLTHROUGH */
cbe950e9
L		 3984 case R_386_PC32:
3985 case R_386_PLT32:
3986 goto do_relocation;
3987
3988 case R_386_GOT32:
02a86693 3989 case R_386_GOT32X:
6de2ae4a 3990 base_got = htab->elf.sgot;
cbe950e9
L		 3991 off = h->got.offset;
3992
7afd84dc 3993 if (base_got == NULL)
cbe950e9
L		 3994 abort ();
3995
7afd84dc 3996 if (off == (bfd_vma) -1)
cbe950e9 3997 {
7afd84dc
L		 3998 /* We can't use h->got.offset here to save state, or
3999 even just remember the offset, as finish_dynamic_symbol
4000 would use that as offset into .got. */
6bbec505 4001
6de2ae4a 4002 if (htab->elf.splt != NULL)
7afd84dc 4003 {
25e762b9 4004 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 4005 off = (plt_index + 3) * 4;
6de2ae4a 4006 base_got = htab->elf.sgotplt;
7afd84dc 4007 }
cbe950e9
L		 4008 else
4009 {
25e762b9 4010 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 4011 off = plt_index * 4;
6de2ae4a 4012 base_got = htab->elf.igotplt;
7afd84dc
L		 4013 }
4014
4015 if (h->dynindx == -1
4016 || h->forced_local
4017 || info->symbolic)
4018 {
4019 /* This references the local defitionion. We must
4020 initialize this entry in the global offset table.
4021 Since the offset must always be a multiple of 8,
4022 we use the least significant bit to record
4023 whether we have initialized it already.
4024
4025 When doing a dynamic link, we create a .rela.got
4026 relocation entry to initialize the value. This
4027 is done in the finish_dynamic_symbol routine. */
4028 if ((off & 1) != 0)
4029 off &= ~1;
4030 else
4031 {
4032 bfd_put_32 (output_bfd, relocation,
4033 base_got->contents + off);
4034 h->got.offset |= 1;
4035 }
cbe950e9 4036 }
cbe950e9 4037
7afd84dc 4038 relocation = off;
7afd84dc
L		 4039 }
4040 else
ca8c86ef
L		 4041 relocation = (base_got->output_section->vma
4042 + base_got->output_offset + off
4043 - gotplt->output_section->vma
4044 - gotplt->output_offset);
4045
712ec279
L		 4046 if ((*(contents + rel->r_offset - 1) & 0xc7) == 0x5)
4047 {
4048 if (bfd_link_pic (info))
4049 goto disallow_got32;
4050
4051 /* Add the GOT base if there is no base register. */
4052 relocation += (gotplt->output_section->vma
4053 + gotplt->output_offset);
4054 }
4055 else if (htab->elf.splt == NULL)
4056 {
4057 /* Adjust for static executables. */
4058 relocation += gotplt->output_offset;
4059 }
0018b0a3 4060
cbe950e9
L		 4061 goto do_relocation;
4062
4063 case R_386_GOTOFF:
4064 relocation -= (gotplt->output_section->vma
4065 + gotplt->output_offset);
4066 goto do_relocation;
4067 }
4068 }
4069
04ebc307 4070 eh = (struct elf_i386_link_hash_entry *) h;
aec6b87e 4071 resolved_to_zero = (eh != NULL
e62b9723
L		 4072 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
4073 eh->has_got_reloc,
4074 eh));
aec6b87e 4075
252b5132
RH		 4076 switch (r_type)
4077 {
02a86693
L		 4078 case R_386_GOT32X:
4079 /* Avoid optimizing _DYNAMIC since ld.so may use its
4080 link-time address. */
4081 if (h == htab->elf.hdynamic)
4082 goto r_386_got32;
4083
4084 if (bfd_link_pic (info))
4085 {
4086 /* It is OK to convert mov to lea and convert indirect
4087 branch to direct branch. It is OK to convert adc,
4088 add, and, cmp, or, sbb, sub, test, xor only when PIC
4089 is false. */
02e2aef8
L		 4090 unsigned int opcode, addend;
4091 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
4092 if (addend != 0)
4093 goto r_386_got32;
4094 opcode = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
02a86693
L		 4095 if (opcode != 0x8b && opcode != 0xff)
4096 goto r_386_got32;
4097 }
4098
4099 /* Resolve "mov GOT[(%reg)], %reg",
4100 "call/jmp *GOT[(%reg)]", "test %reg, foo@GOT[(%reg)]"
4101 and "binop foo@GOT[(%reg)], %reg". */
4102 if (h == NULL
4103 || (h->plt.offset == (bfd_vma) -1
4104 && h->got.offset == (bfd_vma) -1)
4105 || htab->elf.sgotplt == NULL)
4106 abort ();
4107
4108 offplt = (htab->elf.sgotplt->output_section->vma
4109 + htab->elf.sgotplt->output_offset);
4110
4111 /* It is relative to .got.plt section. */
4112 if (h->got.offset != (bfd_vma) -1)
32875eb1
L		 4113 /* Use GOT entry. Mask off the least significant bit in
4114 GOT offset which may be set by R_386_GOT32 processing
4115 below. */
02a86693
L		 4116 relocation = (htab->elf.sgot->output_section->vma
4117 + htab->elf.sgot->output_offset
32875eb1 4118 + (h->got.offset & ~1) - offplt);
02a86693
L		 4119 else
4120 /* Use GOTPLT entry. */
4121 relocation = (h->plt.offset / plt_entry_size - 1 + 3) * 4;
4122
4123 if (!bfd_link_pic (info))
4124 {
4125 /* If not PIC, add the .got.plt section address for
a3718e9e 4126 baseless addressing. */
02a86693 4127 unsigned int modrm;
02e2aef8 4128 modrm = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
02a86693
L		 4129 if ((modrm & 0xc7) == 0x5)
4130 relocation += offplt;
4131 }
4132
4133 unresolved_reloc = FALSE;
4134 break;
4135
252b5132 4136 case R_386_GOT32:
02a86693 4137r_386_got32:
252b5132
RH		 4138 /* Relocation is to the entry for this symbol in the global
4139 offset table. */
6de2ae4a 4140 if (htab->elf.sgot == NULL)
ffb2e45b 4141 abort ();
252b5132
RH		 4142
4143 if (h != NULL)
4144 {
b34976b6 4145 bfd_boolean dyn;
252b5132
RH		 4146
4147 off = h->got.offset;
ebe50bae 4148 dyn = htab->elf.dynamic_sections_created;
0e1862bb
L		 4149 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4150 bfd_link_pic (info),
4151 h)
4152 || (bfd_link_pic (info)
586119b3 4153 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 4154 || (ELF_ST_VISIBILITY (h->other)
4155 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 4156 {
4157 /* This is actually a static link, or it is a
4158 -Bsymbolic link and the symbol is defined
4159 locally, or the symbol was forced to be local
4160 because of a version file. We must initialize
4161 this entry in the global offset table. Since the
4162 offset must always be a multiple of 4, we use the
4163 least significant bit to record whether we have
4164 initialized it already.
4165
4166 When doing a dynamic link, we create a .rel.got
4167 relocation entry to initialize the value. This
4168 is done in the finish_dynamic_symbol routine. */
4169 if ((off & 1) != 0)
4170 off &= ~1;
4171 else
4172 {
4173 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4174 htab->elf.sgot->contents + off);
252b5132
RH		 4175 h->got.offset |= 1;
4176 }
4177 }
8c694914 4178 else
b34976b6 4179 unresolved_reloc = FALSE;
252b5132
RH		 4180 }
4181 else
4182 {
ffb2e45b
AM		 4183 if (local_got_offsets == NULL)
4184 abort ();
252b5132
RH		 4185
4186 off = local_got_offsets[r_symndx];
4187
4188 /* The offset must always be a multiple of 4. We use
83be169b
AM		 4189 the least significant bit to record whether we have
4190 already generated the necessary reloc. */
252b5132
RH		 4191 if ((off & 1) != 0)
4192 off &= ~1;
4193 else
4194 {
6725bdbf 4195 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4196 htab->elf.sgot->contents + off);
252b5132 4197
0e1862bb 4198 if (bfd_link_pic (info))
252b5132 4199 {
947216bf
AM		 4200 asection *s;
4201 Elf_Internal_Rela outrel;
252b5132 4202
6de2ae4a 4203 s = htab->elf.srelgot;
947216bf 4204 if (s == NULL)
ffb2e45b 4205 abort ();
252b5132 4206
6de2ae4a
L		 4207 outrel.r_offset = (htab->elf.sgot->output_section->vma
4208 + htab->elf.sgot->output_offset
252b5132
RH		 4209 + off);
4210 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 4211 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 4212 }
4213
4214 local_got_offsets[r_symndx] |= 1;
4215 }
252b5132
RH		 4216 }
4217
ffb2e45b
AM		 4218 if (off >= (bfd_vma) -2)
4219 abort ();
4220
74d7f0aa
L		 4221 relocation = (htab->elf.sgot->output_section->vma
4222 + htab->elf.sgot->output_offset + off);
4223 if ((*(contents + rel->r_offset - 1) & 0xc7) == 0x5)
4224 {
4225 if (bfd_link_pic (info))
4226 {
4227 /* For PIC, disallow R_386_GOT32 without a base
4228 register since we don't know what the GOT base
4229 is. */
4230 const char *name;
4231
712ec279 4232disallow_got32:
74d7f0aa
L		 4233 if (h == NULL)
4234 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4235 NULL);
4236 else
4237 name = h->root.root.string;
4238
4239 (*_bfd_error_handler)
712ec279
L		 4240 (_("%B: direct GOT relocation %s against `%s' without base register can not be used when making a shared object"),
4241 input_bfd, howto->name, name);
74d7f0aa
L		 4242 bfd_set_error (bfd_error_bad_value);
4243 return FALSE;
4244 }
4245 }
4246 else
4247 {
4248 /* Subtract the .got.plt section address only with a base
4249 register. */
4250 relocation -= (htab->elf.sgotplt->output_section->vma
4251 + htab->elf.sgotplt->output_offset);
4252 }
4253
252b5132
RH		 4254 break;
4255
4256 case R_386_GOTOFF:
4257 /* Relocation is relative to the start of the global offset
4258 table. */
4259
3d949995
L		 4260 /* Check to make sure it isn't a protected function or data
4261 symbol for shared library since it may not be local when
4262 used as function address or with copy relocation. We also
e3c0e327 4263 need to make sure that a symbol is referenced locally. */
0e1862bb 4264 if (!bfd_link_executable (info) && h)
90f487df 4265 {
41bed6dd
L		 4266 if (!h->def_regular)
4267 {
4268 const char *v;
4269
4270 switch (ELF_ST_VISIBILITY (h->other))
4271 {
4272 case STV_HIDDEN:
4273 v = _("hidden symbol");
4274 break;
4275 case STV_INTERNAL:
4276 v = _("internal symbol");
4277 break;
4278 case STV_PROTECTED:
4279 v = _("protected symbol");
4280 break;
4281 default:
4282 v = _("symbol");
4283 break;
4284 }
4285
4286 (*_bfd_error_handler)
4287 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
4288 input_bfd, v, h->root.root.string);
4289 bfd_set_error (bfd_error_bad_value);
4290 return FALSE;
4291 }
d5597ebc 4292 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
3d949995
L		 4293 && (h->type == STT_FUNC
4294 || h->type == STT_OBJECT)
41bed6dd
L		 4295 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
4296 {
4297 (*_bfd_error_handler)
3d949995
L		 4298 (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
4299 input_bfd,
4300 h->type == STT_FUNC ? "function" : "data",
4301 h->root.root.string);
41bed6dd
L		 4302 bfd_set_error (bfd_error_bad_value);
4303 return FALSE;
4304 }
90f487df
L		 4305 }
4306
8c37241b
JJ		 4307 /* Note that sgot is not involved in this
4308 calculation. We always want the start of .got.plt. If we
4309 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 4310 permitted by the ABI, we might have to change this
4311 calculation. */
6de2ae4a
L		 4312 relocation -= htab->elf.sgotplt->output_section->vma
4313 + htab->elf.sgotplt->output_offset;
252b5132
RH		 4314 break;
4315
4316 case R_386_GOTPC:
4317 /* Use global offset table as symbol value. */
6de2ae4a
L		 4318 relocation = htab->elf.sgotplt->output_section->vma
4319 + htab->elf.sgotplt->output_offset;
b34976b6 4320 unresolved_reloc = FALSE;
252b5132
RH		 4321 break;
4322
4323 case R_386_PLT32:
4324 /* Relocation is to the entry for this symbol in the
4325 procedure linkage table. */
4326
dd5724d5 4327 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 4328 without using the procedure linkage table. */
252b5132
RH		 4329 if (h == NULL)
4330 break;
4331
dd7e64d4
L		 4332 if ((h->plt.offset == (bfd_vma) -1
4333 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 4334 || htab->elf.splt == NULL)
252b5132
RH		 4335 {
4336 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 4337 happens when statically linking PIC code, or when
4338 using -Bsymbolic. */
252b5132
RH		 4339 break;
4340 }
4341
dd7e64d4
L		 4342 if (h->plt.offset != (bfd_vma) -1)
4343 {
4344 resolved_plt = htab->elf.splt;
4345 plt_offset = h->plt.offset;
4346 }
4347 else
4348 {
4349 resolved_plt = htab->plt_got;
4350 plt_offset = eh->plt_got.offset;
4351 }
4352
4353 relocation = (resolved_plt->output_section->vma
4354 + resolved_plt->output_offset
4355 + plt_offset);
b34976b6 4356 unresolved_reloc = FALSE;
252b5132
RH		 4357 break;
4358
1788fc08 4359 case R_386_SIZE32:
1788fc08
L		 4360 /* Set to symbol size. */
4361 relocation = st_size;
4362 /* Fall through. */
4363
252b5132
RH		 4364 case R_386_32:
4365 case R_386_PC32:
3348747a
NS		 4366 if ((input_section->flags & SEC_ALLOC) == 0
4367 || is_vxworks_tls)
ec338859
AM		 4368 break;
4369
aec6b87e
L		 4370 /* Copy dynamic function pointer relocations. Don't generate
4371 dynamic relocations against resolved undefined weak symbols
4372 in PIE, except for R_386_PC32. */
0e1862bb 4373 if ((bfd_link_pic (info)
ef5aade5 4374 && (h == NULL
aec6b87e
L		 4375 || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4376 && (!resolved_to_zero
4377 || r_type == R_386_PC32))
4378 || h->root.type != bfd_link_hash_undefweak))
1788fc08 4379 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 4380 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845 4381 || (ELIMINATE_COPY_RELOCS
0e1862bb 4382 && !bfd_link_pic (info)
12d0ee4a
AM		 4383 && h != NULL
4384 && h->dynindx != -1
aec6b87e
L		 4385 && (!h->non_got_ref
4386 || eh->func_pointer_refcount > 0
4387 || (h->root.type == bfd_link_hash_undefweak
4388 && !resolved_to_zero))
bae420ef
L		 4389 && ((h->def_dynamic && !h->def_regular)
4390 /* Undefined weak symbol is bound locally when
4391 PIC is false. */
4392 || h->root.type == bfd_link_hash_undefweak)))
252b5132 4393 {
947216bf 4394 Elf_Internal_Rela outrel;
b34976b6 4395 bfd_boolean skip, relocate;
0c715baa 4396 asection *sreloc;
252b5132
RH		 4397
4398 /* When generating a shared object, these relocations
4399 are copied into the output file to be resolved at run
4400 time. */
4401
b34976b6
AM		 4402 skip = FALSE;
4403 relocate = FALSE;
252b5132 4404
c629eae0
JJ		 4405 outrel.r_offset =
4406 _bfd_elf_section_offset (output_bfd, info, input_section,
4407 rel->r_offset);
4408 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4409 skip = TRUE;
0bb2d96a 4410 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4411 skip = TRUE, relocate = TRUE;
252b5132
RH		 4412 outrel.r_offset += (input_section->output_section->vma
4413 + input_section->output_offset);
4414
4415 if (skip)
0bb2d96a 4416 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 4417 else if (h != NULL
4418 && h->dynindx != -1
4419 && (r_type == R_386_PC32
4e0c91e4
L		 4420 || !(bfd_link_executable (info)
4421 || SYMBOLIC_BIND (info, h))
f5385ebf 4422 || !h->def_regular))
0bb2d96a 4423 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 4424 else
4425 {
5a15f56f 4426 /* This symbol is local, or marked to become local. */
b34976b6 4427 relocate = TRUE;
5a15f56f 4428 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 4429 }
4430
cbe950e9 4431 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 4432
62d78908
L		 4433 if (sreloc == NULL || sreloc->contents == NULL)
4434 {
4435 r = bfd_reloc_notsupported;
4436 goto check_relocation_error;
4437 }
0c715baa 4438
59d6ffb2 4439 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 4440
4441 /* If this reloc is against an external symbol, we do
4442 not want to fiddle with the addend. Otherwise, we
4443 need to include the symbol value so that it becomes
4444 an addend for the dynamic reloc. */
0f88be7a 4445 if (! relocate)
252b5132
RH		 4446 continue;
4447 }
252b5132
RH		 4448 break;
4449
37e55690 4450 case R_386_TLS_IE:
0e1862bb 4451 if (!bfd_link_executable (info))
37e55690 4452 {
947216bf 4453 Elf_Internal_Rela outrel;
37e55690 4454 asection *sreloc;
37e55690
JJ		 4455
4456 outrel.r_offset = rel->r_offset
4457 + input_section->output_section->vma
4458 + input_section->output_offset;
4459 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4460 sreloc = elf_section_data (input_section)->sreloc;
4461 if (sreloc == NULL)
4462 abort ();
59d6ffb2 4463 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4464 }
4465 /* Fall through */
4466
13ae64f3 4467 case R_386_TLS_GD:
67a4f2b7
AO		 4468 case R_386_TLS_GOTDESC:
4469 case R_386_TLS_DESC_CALL:
13ae64f3 4470 case R_386_TLS_IE_32:
37e55690 4471 case R_386_TLS_GOTIE:
13ae64f3
JJ		 4472 tls_type = GOT_UNKNOWN;
4473 if (h == NULL && local_got_offsets)
4474 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
4475 else if (h != NULL)
142411ca 4476 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 4477 if (tls_type == GOT_TLS_IE)
4478 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 4479
4480 if (! elf_i386_tls_transition (info, input_bfd,
4481 input_section, contents,
4482 symtab_hdr, sym_hashes,
4483 &r_type, tls_type, rel,
bedfd056 4484 relend, h, r_symndx, TRUE))
142411ca 4485 return FALSE;
13ae64f3
JJ		 4486
4487 if (r_type == R_386_TLS_LE_32)
4488 {
82e51918 4489 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 4490 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
4491 {
142411ca 4492 unsigned int type;
13ae64f3
JJ		 4493 bfd_vma roff;
4494
4495 /* GD->LE transition. */
6eaa7fb5 4496 type = *(contents + rel->r_offset - 2);
13ae64f3
JJ		 4497 if (type == 0x04)
4498 {
6eaa7fb5
L		 4499 /* Change
4500 leal foo@tlsgd(,%ebx,1), %eax
4501 call ___tls_get_addr@PLT
4502 into:
4503 movl %gs:0, %eax
4504 subl $foo@tpoff, %eax
13ae64f3 4505 (6 byte form of subl). */
142411ca 4506 roff = rel->r_offset + 5;
13ae64f3
JJ		 4507 }
4508 else
4509 {
6eaa7fb5
L		 4510 /* Change
4511 leal foo@tlsgd(%ebx), %eax
4512 call ___tls_get_addr@PLT
4513 nop
4514 or
4515 leal foo@tlsgd(%reg), %eax
4516 call *___tls_get_addr@GOT(%reg)
4517 which may be converted to
4518 addr32 call ___tls_get_addr
4519 into:
4520 movl %gs:0, %eax; subl $foo@tpoff, %eax
142411ca 4521 (6 byte form of subl). */
142411ca 4522 roff = rel->r_offset + 6;
13ae64f3 4523 }
6eaa7fb5
L		 4524 memcpy (contents + roff - 8,
4525 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
eb4ff4d6 4526 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 4527 contents + roff);
6eaa7fb5 4528 /* Skip R_386_PC32, R_386_PLT32 and R_386_GOT32X. */
13ae64f3 4529 rel++;
60f2e42e 4530 wrel++;
13ae64f3
JJ		 4531 continue;
4532 }
67a4f2b7
AO		 4533 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4534 {
4535 /* GDesc -> LE transition.
4536 It's originally something like:
4537 leal x@tlsdesc(%ebx), %eax
4538
4539 leal x@ntpoff, %eax
4540
4541 Registers other than %eax may be set up here. */
4542
142411ca 4543 unsigned int val;
67a4f2b7
AO		 4544 bfd_vma roff;
4545
67a4f2b7 4546 roff = rel->r_offset;
67a4f2b7 4547 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 4548
4549 /* Now modify the instruction as appropriate. */
4550 /* aoliva FIXME: remove the above and xor the byte
4551 below with 0x86. */
4552 bfd_put_8 (output_bfd, val ^ 0x86,
4553 contents + roff - 1);
eb4ff4d6 4554 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 4555 contents + roff);
4556 continue;
4557 }
4558 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4559 {
4560 /* GDesc -> LE transition.
4561 It's originally:
4562 call *(%eax)
4563 Turn it into:
142411ca 4564 xchg %ax,%ax */
67a4f2b7 4565
67a4f2b7 4566 bfd_vma roff;
6bbec505 4567
67a4f2b7 4568 roff = rel->r_offset;
10efb593 4569 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4570 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4571 continue;
4572 }
37e55690 4573 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 4574 {
142411ca 4575 unsigned int val;
13ae64f3
JJ		 4576
4577 /* IE->LE transition:
37e55690
JJ		 4578 Originally it can be one of:
4579 movl foo, %eax
4580 movl foo, %reg
4581 addl foo, %reg
4582 We change it into:
4583 movl $foo, %eax
4584 movl $foo, %reg
4585 addl $foo, %reg. */
37e55690 4586 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 4587 if (val == 0xa1)
4588 {
4589 /* movl foo, %eax. */
55fd94b0
AM		 4590 bfd_put_8 (output_bfd, 0xb8,
4591 contents + rel->r_offset - 1);
37e55690 4592 }
299bf759 4593 else
37e55690 4594 {
142411ca
L		 4595 unsigned int type;
4596
55fd94b0
AM		 4597 type = bfd_get_8 (input_bfd,
4598 contents + rel->r_offset - 2);
299bf759 4599 switch (type)
26e41594 4600 {
299bf759
L		 4601 case 0x8b:
4602 /* movl */
299bf759
L		 4603 bfd_put_8 (output_bfd, 0xc7,
4604 contents + rel->r_offset - 2);
4605 bfd_put_8 (output_bfd,
4606 0xc0 | ((val >> 3) & 7),
4607 contents + rel->r_offset - 1);
4608 break;
4609 case 0x03:
4610 /* addl */
299bf759
L		 4611 bfd_put_8 (output_bfd, 0x81,
4612 contents + rel->r_offset - 2);
4613 bfd_put_8 (output_bfd,
4614 0xc0 | ((val >> 3) & 7),
4615 contents + rel->r_offset - 1);
4616 break;
4617 default:
4618 BFD_FAIL ();
4619 break;
26e41594 4620 }
37e55690 4621 }
eb4ff4d6 4622 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4623 contents + rel->r_offset);
4624 continue;
4625 }
4626 else
4627 {
4628 unsigned int val, type;
4629
4630 /* {IE_32,GOTIE}->LE transition:
4631 Originally it can be one of:
13ae64f3 4632 subl foo(%reg1), %reg2
13ae64f3 4633 movl foo(%reg1), %reg2
37e55690 4634 addl foo(%reg1), %reg2
13ae64f3
JJ		 4635 We change it into:
4636 subl $foo, %reg2
37e55690
JJ		 4637 movl $foo, %reg2 (6 byte form)
4638 addl $foo, %reg2. */
13ae64f3
JJ		 4639 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4640 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4641 if (type == 0x8b)
4642 {
4643 /* movl */
13ae64f3
JJ		 4644 bfd_put_8 (output_bfd, 0xc7,
4645 contents + rel->r_offset - 2);
4646 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4647 contents + rel->r_offset - 1);
4648 }
4649 else if (type == 0x2b)
4650 {
4651 /* subl */
13ae64f3
JJ		 4652 bfd_put_8 (output_bfd, 0x81,
4653 contents + rel->r_offset - 2);
4654 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4655 contents + rel->r_offset - 1);
4656 }
37e55690
JJ		 4657 else if (type == 0x03)
4658 {
4659 /* addl */
4660 bfd_put_8 (output_bfd, 0x81,
4661 contents + rel->r_offset - 2);
4662 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4663 contents + rel->r_offset - 1);
4664 }
13ae64f3
JJ		 4665 else
4666 BFD_FAIL ();
37e55690 4667 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4668 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4669 contents + rel->r_offset);
4670 else
eb4ff4d6 4671 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4672 contents + rel->r_offset);
13ae64f3
JJ		 4673 continue;
4674 }
4675 }
4676
6de2ae4a 4677 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4678 abort ();
4679
4680 if (h != NULL)
67a4f2b7
AO		 4681 {
4682 off = h->got.offset;
4683 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4684 }
13ae64f3
JJ		 4685 else
4686 {
4687 if (local_got_offsets == NULL)
4688 abort ();
4689
4690 off = local_got_offsets[r_symndx];
67a4f2b7 4691 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4692 }
4693
4694 if ((off & 1) != 0)
4695 off &= ~1;
26e41594 4696 else
13ae64f3 4697 {
947216bf 4698 Elf_Internal_Rela outrel;
91d6fa6a 4699 int dr_type;
67a4f2b7 4700 asection *sreloc;
13ae64f3 4701
6de2ae4a 4702 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4703 abort ();
4704
67a4f2b7
AO		 4705 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4706
4707 if (GOT_TLS_GDESC_P (tls_type))
4708 {
59d6ffb2 4709 bfd_byte *loc;
67a4f2b7
AO		 4710 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4711 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4712 <= htab->elf.sgotplt->size);
4713 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4714 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4715 + offplt
4716 + htab->sgotplt_jump_table_size);
6de2ae4a 4717 sreloc = htab->elf.srelplt;
67a4f2b7 4718 loc = sreloc->contents;
5ae0bfb6
RS		 4719 loc += (htab->next_tls_desc_index++
4720 * sizeof (Elf32_External_Rel));
67a4f2b7 4721 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4722 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4723 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4724 if (indx == 0)
4725 {
4726 BFD_ASSERT (! unresolved_reloc);
4727 bfd_put_32 (output_bfd,
eb4ff4d6 4728 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4729 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4730 + htab->sgotplt_jump_table_size + 4);
4731 }
4732 else
4733 {
4734 bfd_put_32 (output_bfd, 0,
6de2ae4a 4735 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4736 + htab->sgotplt_jump_table_size + 4);
4737 }
4738 }
4739
6de2ae4a 4740 sreloc = htab->elf.srelgot;
67a4f2b7 4741
6de2ae4a
L		 4742 outrel.r_offset = (htab->elf.sgot->output_section->vma
4743 + htab->elf.sgot->output_offset + off);
13ae64f3 4744
67a4f2b7 4745 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4746 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4747 else if (GOT_TLS_GDESC_P (tls_type))
4748 goto dr_done;
37e55690
JJ		 4749 else if (tls_type == GOT_TLS_IE_POS)
4750 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4751 else
4752 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4753
37e55690 4754 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4755 bfd_put_32 (output_bfd,
4756 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4757 htab->elf.sgot->contents + off);
37e55690 4758 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4759 bfd_put_32 (output_bfd,
eb4ff4d6 4760 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4761 htab->elf.sgot->contents + off);
67a4f2b7 4762 else if (dr_type != R_386_TLS_DESC)
c366c25e 4763 bfd_put_32 (output_bfd, 0,
6de2ae4a 4764 htab->elf.sgot->contents + off);
13ae64f3 4765 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4766
59d6ffb2 4767 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4768
67a4f2b7 4769 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4770 {
4771 if (indx == 0)
4772 {
82e51918 4773 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4774 bfd_put_32 (output_bfd,
eb4ff4d6 4775 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4776 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4777 }
4778 else
4779 {
4780 bfd_put_32 (output_bfd, 0,
6de2ae4a 4781 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4782 outrel.r_info = ELF32_R_INFO (indx,
4783 R_386_TLS_DTPOFF32);
4784 outrel.r_offset += 4;
59d6ffb2 4785 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4786 }
4787 }
37e55690
JJ		 4788 else if (tls_type == GOT_TLS_IE_BOTH)
4789 {
4790 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4791 (indx == 0
4792 ? relocation - elf_i386_dtpoff_base (info)
4793 : 0),
6de2ae4a 4794 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4795 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4796 outrel.r_offset += 4;
59d6ffb2 4797 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4798 }
13ae64f3 4799
67a4f2b7 4800 dr_done:
13ae64f3
JJ		 4801 if (h != NULL)
4802 h->got.offset |= 1;
4803 else
4804 local_got_offsets[r_symndx] |= 1;
4805 }
4806
67a4f2b7
AO		 4807 if (off >= (bfd_vma) -2
4808 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4809 abort ();
67a4f2b7
AO		 4810 if (r_type == R_386_TLS_GOTDESC
4811 || r_type == R_386_TLS_DESC_CALL)
4812 {
4813 relocation = htab->sgotplt_jump_table_size + offplt;
4814 unresolved_reloc = FALSE;
4815 }
4816 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4817 {
6de2ae4a
L		 4818 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4819 + htab->elf.sgotplt->output_offset;
4820 relocation = htab->elf.sgot->output_section->vma
4821 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4822 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4823 && tls_type == GOT_TLS_IE_BOTH)
4824 relocation += 4;
4825 if (r_type == R_386_TLS_IE)
8c37241b 4826 relocation += g_o_t;
b34976b6 4827 unresolved_reloc = FALSE;
13ae64f3 4828 }
67a4f2b7 4829 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4830 {
4831 unsigned int val, type;
4832 bfd_vma roff;
4833
4834 /* GD->IE transition. */
6eaa7fb5
L		 4835 type = *(contents + rel->r_offset - 2);
4836 val = *(contents + rel->r_offset - 1);
13ae64f3
JJ		 4837 if (type == 0x04)
4838 {
6eaa7fb5
L		 4839 /* Change
4840 leal foo@tlsgd(,%ebx,1), %eax
4841 call ___tls_get_addr@PLT
4842 into:
4843 movl %gs:0, %eax
4844 subl $foo@gottpoff(%ebx), %eax. */
13ae64f3 4845 val >>= 3;
142411ca 4846 roff = rel->r_offset - 3;
13ae64f3
JJ		 4847 }
4848 else
4849 {
6eaa7fb5
L		 4850 /* Change
4851 leal foo@tlsgd(%ebx), %eax
4852 call ___tls_get_addr@PLT
4853 nop
4854 or
4855 leal foo@tlsgd(%reg), %eax
4856 call *___tls_get_addr@GOT(%reg)
4857 which may be converted to
4858 addr32 call ___tls_get_addr
4859 into:
4860 movl %gs:0, %eax;
4861 subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4862 roff = rel->r_offset - 2;
4863 }
4864 memcpy (contents + roff,
4865 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4866 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4867 /* If foo is used only with foo@gotntpoff(%reg) and
4868 foo@indntpoff, but not with foo@gottpoff(%reg), change
4869 subl $foo@gottpoff(%reg), %eax
4870 into:
4871 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4872 if (tls_type == GOT_TLS_IE_POS)
4873 contents[roff + 6] = 0x03;
8c37241b 4874 bfd_put_32 (output_bfd,
6de2ae4a
L		 4875 htab->elf.sgot->output_section->vma
4876 + htab->elf.sgot->output_offset + off
4877 - htab->elf.sgotplt->output_section->vma
4878 - htab->elf.sgotplt->output_offset,
13ae64f3 4879 contents + roff + 8);
6eaa7fb5 4880 /* Skip R_386_PLT32 and R_386_GOT32X. */
13ae64f3 4881 rel++;
60f2e42e 4882 wrel++;
13ae64f3
JJ		 4883 continue;
4884 }
67a4f2b7
AO		 4885 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4886 {
4887 /* GDesc -> IE transition.
4888 It's originally something like:
4889 leal x@tlsdesc(%ebx), %eax
4890
4891 Change it to:
142411ca 4892 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4893 or:
4894 movl x@gottpoff(%ebx), %eax # before negl %eax
4895
4896 Registers other than %eax may be set up here. */
4897
67a4f2b7
AO		 4898 bfd_vma roff;
4899
4900 /* First, make sure it's a leal adding ebx to a 32-bit
4901 offset into any register, although it's probably
4902 almost always going to be eax. */
4903 roff = rel->r_offset;
67a4f2b7
AO		 4904
4905 /* Now modify the instruction as appropriate. */
4906 /* To turn a leal into a movl in the form we use it, it
4907 suffices to change the first byte from 0x8d to 0x8b.
4908 aoliva FIXME: should we decide to keep the leal, all
4909 we have to do is remove the statement below, and
4910 adjust the relaxation of R_386_TLS_DESC_CALL. */
4911 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4912
4913 if (tls_type == GOT_TLS_IE_BOTH)
4914 off += 4;
4915
4916 bfd_put_32 (output_bfd,
6de2ae4a
L		 4917 htab->elf.sgot->output_section->vma
4918 + htab->elf.sgot->output_offset + off
4919 - htab->elf.sgotplt->output_section->vma
4920 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4921 contents + roff);
4922 continue;
4923 }
4924 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4925 {
4926 /* GDesc -> IE transition.
4927 It's originally:
4928 call *(%eax)
4929
4930 Change it to:
142411ca 4931 xchg %ax,%ax
67a4f2b7
AO		 4932 or
4933 negl %eax
4934 depending on how we transformed the TLS_GOTDESC above.
4935 */
4936
67a4f2b7
AO		 4937 bfd_vma roff;
4938
67a4f2b7 4939 roff = rel->r_offset;
67a4f2b7
AO		 4940
4941 /* Now modify the instruction as appropriate. */
4942 if (tls_type != GOT_TLS_IE_NEG)
4943 {
10efb593
L		 4944 /* xchg %ax,%ax */
4945 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4946 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4947 }
4948 else
4949 {
4950 /* negl %eax */
4951 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4952 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4953 }
4954
4955 continue;
4956 }
4957 else
4958 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4959 break;
4960
4961 case R_386_TLS_LDM:
142411ca
L		 4962 if (! elf_i386_tls_transition (info, input_bfd,
4963 input_section, contents,
4964 symtab_hdr, sym_hashes,
4965 &r_type, GOT_UNKNOWN, rel,
bedfd056 4966 relend, h, r_symndx, TRUE))
142411ca 4967 return FALSE;
13ae64f3 4968
142411ca
L		 4969 if (r_type != R_386_TLS_LDM)
4970 {
6eaa7fb5
L		 4971 /* LD->LE transition. Change
4972 leal foo@tlsldm(%ebx) %eax
4973 call ___tls_get_addr@PLT
4974 into:
4975 movl %gs:0, %eax
4976 nop
4977 leal 0(%esi,1), %esi
4978 or change
4979 leal foo@tlsldm(%reg) %eax
4980 call *___tls_get_addr@GOT(%reg)
4981 which may be converted to
4982 addr32 call ___tls_get_addr
4983 into:
4984 movl %gs:0, %eax
4985 leal 0(%esi), %esi */
142411ca 4986 BFD_ASSERT (r_type == R_386_TLS_LE_32);
6eaa7fb5
L		 4987 if (*(contents + rel->r_offset + 4) == 0xff
4988 || *(contents + rel->r_offset + 4) == 0x67)
4989 memcpy (contents + rel->r_offset - 2,
4990 "\x65\xa1\0\0\0\0\x8d\xb6\0\0\0", 12);
4991 else
4992 memcpy (contents + rel->r_offset - 2,
4993 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4994 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3 4995 rel++;
60f2e42e 4996 wrel++;
13ae64f3
JJ		 4997 continue;
4998 }
4999
6de2ae4a 5000 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 5001 abort ();
5002
5003 off = htab->tls_ldm_got.offset;
5004 if (off & 1)
5005 off &= ~1;
5006 else
5007 {
947216bf 5008 Elf_Internal_Rela outrel;
13ae64f3 5009
6de2ae4a 5010 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 5011 abort ();
5012
6de2ae4a
L		 5013 outrel.r_offset = (htab->elf.sgot->output_section->vma
5014 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 5015
5016 bfd_put_32 (output_bfd, 0,
6de2ae4a 5017 htab->elf.sgot->contents + off);
13ae64f3 5018 bfd_put_32 (output_bfd, 0,
6de2ae4a 5019 htab->elf.sgot->contents + off + 4);
13ae64f3 5020 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 5021 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 5022 htab->tls_ldm_got.offset |= 1;
5023 }
6de2ae4a
L		 5024 relocation = htab->elf.sgot->output_section->vma
5025 + htab->elf.sgot->output_offset + off
5026 - htab->elf.sgotplt->output_section->vma
5027 - htab->elf.sgotplt->output_offset;
b34976b6 5028 unresolved_reloc = FALSE;
13ae64f3
JJ		 5029 break;
5030
5031 case R_386_TLS_LDO_32:
0e1862bb
L		 5032 if (!bfd_link_executable (info)
5033 || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 5034 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 5035 else
5036 /* When converting LDO to LE, we must negate. */
eb4ff4d6 5037 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 5038 break;
5039
5040 case R_386_TLS_LE_32:
13ae64f3 5041 case R_386_TLS_LE:
0e1862bb 5042 if (!bfd_link_executable (info))
37e55690 5043 {
947216bf 5044 Elf_Internal_Rela outrel;
37e55690 5045 asection *sreloc;
37e55690
JJ		 5046
5047 outrel.r_offset = rel->r_offset
5048 + input_section->output_section->vma
5049 + input_section->output_offset;
5050 if (h != NULL && h->dynindx != -1)
5051 indx = h->dynindx;
5052 else
5053 indx = 0;
5054 if (r_type == R_386_TLS_LE_32)
5055 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
5056 else
5057 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
5058 sreloc = elf_section_data (input_section)->sreloc;
5059 if (sreloc == NULL)
5060 abort ();
59d6ffb2 5061 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 5062 if (indx)
5063 continue;
5064 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 5065 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 5066 else
eb4ff4d6 5067 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 5068 }
5069 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 5070 relocation = elf_i386_tpoff (info, relocation);
37e55690 5071 else
eb4ff4d6 5072 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 5073 break;
5074
252b5132
RH		 5075 default:
5076 break;
5077 }
5078
239e1f3a
AM		 5079 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5080 because such sections are not SEC_ALLOC and thus ld.so will
5081 not process them. */
8c694914 5082 if (unresolved_reloc
239e1f3a 5083 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 5084 && h->def_dynamic)
5085 && _bfd_elf_section_offset (output_bfd, info, input_section,
5086 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 5087 {
5088 (*_bfd_error_handler)
843fe662 5089 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 5090 input_bfd,
5091 input_section,
6a30718d 5092 (long) rel->r_offset,
843fe662 5093 howto->name,
6a30718d 5094 h->root.root.string);
b34976b6 5095 return FALSE;
6a30718d 5096 }
83be169b 5097
cbe950e9 5098do_relocation:
252b5132
RH		 5099 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5100 contents, rel->r_offset,
55fd94b0 5101 relocation, 0);
252b5132 5102
62d78908 5103check_relocation_error:
cf5c0c5b 5104 if (r != bfd_reloc_ok)
252b5132 5105 {
cf5c0c5b 5106 const char *name;
ffb2e45b 5107
cf5c0c5b
AM		 5108 if (h != NULL)
5109 name = h->root.root.string;
5110 else
5111 {
5112 name = bfd_elf_string_from_elf_section (input_bfd,
5113 symtab_hdr->sh_link,
5114 sym->st_name);
5115 if (name == NULL)
b34976b6 5116 return FALSE;
cf5c0c5b
AM		 5117 if (*name == '\0')
5118 name = bfd_section_name (input_bfd, sec);
5119 }
ffb2e45b 5120
cf5c0c5b 5121 if (r == bfd_reloc_overflow)
1a72702b
AM		 5122 (*info->callbacks->reloc_overflow)
5123 (info, (h ? &h->root : NULL), name, howto->name,
5124 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
cf5c0c5b
AM		 5125 else
5126 {
5127 (*_bfd_error_handler)
d003868e
AM		 5128 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
5129 input_bfd, input_section,
cf5c0c5b 5130 (long) rel->r_offset, name, (int) r);
b34976b6 5131 return FALSE;
cf5c0c5b 5132 }
252b5132 5133 }
60f2e42e
L		 5134
5135 if (wrel != rel)
5136 *wrel = *rel;
5137 }
5138
5139 if (wrel != rel)
5140 {
5141 Elf_Internal_Shdr *rel_hdr;
5142 size_t deleted = rel - wrel;
5143
5144 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
5145 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5146 if (rel_hdr->sh_size == 0)
5147 {
5148 /* It is too late to remove an empty reloc section. Leave
5149 one NONE reloc.
5150 ??? What is wrong with an empty section??? */
5151 rel_hdr->sh_size = rel_hdr->sh_entsize;
5152 deleted -= 1;
5153 }
5154 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
5155 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5156 input_section->reloc_count -= deleted;
252b5132
RH		 5157 }
5158
b34976b6 5159 return TRUE;
252b5132
RH		 5160}
5161
5162/* Finish up dynamic symbol handling. We set the contents of various
5163 dynamic sections here. */
5164
b34976b6 5165static bfd_boolean
55fd94b0
AM		 5166elf_i386_finish_dynamic_symbol (bfd *output_bfd,
5167 struct bfd_link_info *info,
5168 struct elf_link_hash_entry *h,
5169 Elf_Internal_Sym *sym)
252b5132 5170{
6725bdbf 5171 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 5172 unsigned plt_entry_size;
5173 const struct elf_i386_backend_data *abed;
dd7e64d4 5174 struct elf_i386_link_hash_entry *eh;
aec6b87e 5175 bfd_boolean local_undefweak;
252b5132 5176
6725bdbf 5177 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5178 if (htab == NULL)
5179 return FALSE;
252b5132 5180
25e762b9
RM		 5181 abed = get_elf_i386_backend_data (output_bfd);
5182 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
5183
dd7e64d4
L		 5184 eh = (struct elf_i386_link_hash_entry *) h;
5185
aec6b87e
L		 5186 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
5187 resolved undefined weak symbols in executable so that their
5188 references have value 0 at run-time. */
e62b9723
L		 5189 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
5190 eh->has_got_reloc,
5191 eh);
aec6b87e 5192
252b5132
RH		 5193 if (h->plt.offset != (bfd_vma) -1)
5194 {
252b5132
RH		 5195 bfd_vma plt_index;
5196 bfd_vma got_offset;
947216bf
AM		 5197 Elf_Internal_Rela rel;
5198 bfd_byte *loc;
cbe950e9
L		 5199 asection *plt, *gotplt, *relplt;
5200
5201 /* When building a static executable, use .iplt, .igot.plt and
5202 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 5203 if (htab->elf.splt != NULL)
cbe950e9 5204 {
6de2ae4a
L		 5205 plt = htab->elf.splt;
5206 gotplt = htab->elf.sgotplt;
5207 relplt = htab->elf.srelplt;
cbe950e9
L		 5208 }
5209 else
5210 {
6de2ae4a
L		 5211 plt = htab->elf.iplt;
5212 gotplt = htab->elf.igotplt;
5213 relplt = htab->elf.irelplt;
cbe950e9 5214 }
252b5132
RH		 5215
5216 /* This symbol has an entry in the procedure linkage table. Set
5217 it up. */
5218
cbe950e9 5219 if ((h->dynindx == -1
aec6b87e 5220 && !local_undefweak
0e1862bb 5221 && !((h->forced_local || bfd_link_executable (info))
cbe950e9
L		 5222 && h->def_regular
5223 && h->type == STT_GNU_IFUNC))
5224 || plt == NULL
5225 || gotplt == NULL
5226 || relplt == NULL)
cec7f46a 5227 abort ();
252b5132
RH		 5228
5229 /* Get the index in the procedure linkage table which
5230 corresponds to this symbol. This is the index of this symbol
5231 in all the symbols for which we are making plt entries. The
cbe950e9 5232 first entry in the procedure linkage table is reserved.
252b5132 5233
cbe950e9 5234 Get the offset into the .got table of the entry that
252b5132 5235 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 5236 The first three are reserved.
6bbec505 5237
cbe950e9
L		 5238 For static executables, we don't reserve anything. */
5239
6de2ae4a 5240 if (plt == htab->elf.splt)
cbe950e9 5241 {
e1f98742
L		 5242 got_offset = h->plt.offset / plt_entry_size - 1;
5243 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 5244 }
5245 else
5246 {
e1f98742
L		 5247 got_offset = h->plt.offset / plt_entry_size;
5248 got_offset = got_offset * 4;
cbe950e9 5249 }
252b5132
RH		 5250
5251 /* Fill in the entry in the procedure linkage table. */
0e1862bb 5252 if (! bfd_link_pic (info))
252b5132 5253 {
25e762b9
RM		 5254 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
5255 abed->plt->plt_entry_size);
252b5132 5256 bfd_put_32 (output_bfd,
cbe950e9
L		 5257 (gotplt->output_section->vma
5258 + gotplt->output_offset
252b5132 5259 + got_offset),
25e762b9
RM		 5260 plt->contents + h->plt.offset
5261 + abed->plt->plt_got_offset);
eac338cf 5262
25e762b9 5263 if (abed->is_vxworks)
eac338cf
PB		 5264 {
5265 int s, k, reloc_index;
5266
5267 /* Create the R_386_32 relocation referencing the GOT
5268 for this PLT entry. */
5269
5270 /* S: Current slot number (zero-based). */
25e762b9
RM		 5271 s = ((h->plt.offset - abed->plt->plt_entry_size)
5272 / abed->plt->plt_entry_size);
eac338cf 5273 /* K: Number of relocations for PLTResolve. */
0e1862bb 5274 if (bfd_link_pic (info))
eac338cf
PB		 5275 k = PLTRESOLVE_RELOCS_SHLIB;
5276 else
5277 k = PLTRESOLVE_RELOCS;
5278 /* Skip the PLTresolve relocations, and the relocations for
5279 the other PLT slots. */
5280 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
5281 loc = (htab->srelplt2->contents + reloc_index
5282 * sizeof (Elf32_External_Rel));
5283
6de2ae4a
L		 5284 rel.r_offset = (htab->elf.splt->output_section->vma
5285 + htab->elf.splt->output_offset
eac338cf 5286 + h->plt.offset + 2),
7325306f 5287 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5288 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5289
5290 /* Create the R_386_32 relocation referencing the beginning of
5291 the PLT for this GOT entry. */
6de2ae4a
L		 5292 rel.r_offset = (htab->elf.sgotplt->output_section->vma
5293 + htab->elf.sgotplt->output_offset
eac338cf 5294 + got_offset);
7325306f 5295 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 5296 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 5297 loc + sizeof (Elf32_External_Rel));
eac338cf 5298 }
252b5132
RH		 5299 }
5300 else
5301 {
25e762b9
RM		 5302 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
5303 abed->plt->plt_entry_size);
252b5132 5304 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 5305 plt->contents + h->plt.offset
5306 + abed->plt->plt_got_offset);
252b5132
RH		 5307 }
5308
aec6b87e
L		 5309 /* Fill in the entry in the global offset table. Leave the entry
5310 as zero for undefined weak symbol in PIE. No PLT relocation
5311 against undefined weak symbol in PIE. */
5312 if (!local_undefweak)
cbe950e9 5313 {
cbe950e9 5314 bfd_put_32 (output_bfd,
aec6b87e
L		 5315 (plt->output_section->vma
5316 + plt->output_offset
5317 + h->plt.offset
5318 + abed->plt->plt_lazy_offset),
cbe950e9 5319 gotplt->contents + got_offset);
252b5132 5320
aec6b87e
L		 5321 /* Fill in the entry in the .rel.plt section. */
5322 rel.r_offset = (gotplt->output_section->vma
5323 + gotplt->output_offset
5324 + got_offset);
5325 if (h->dynindx == -1
5326 || ((bfd_link_executable (info)
5327 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5328 && h->def_regular
5329 && h->type == STT_GNU_IFUNC))
5330 {
5331 /* If an STT_GNU_IFUNC symbol is locally defined, generate
5332 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
5333 in the .got.plt section. */
5334 bfd_put_32 (output_bfd,
5335 (h->root.u.def.value
5336 + h->root.u.def.section->output_section->vma
5337 + h->root.u.def.section->output_offset),
5338 gotplt->contents + got_offset);
5339 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
5340 /* R_386_IRELATIVE comes last. */
5341 plt_index = htab->next_irelative_index--;
5342 }
5343 else
5344 {
5345 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
5346 plt_index = htab->next_jump_slot_index++;
5347 }
5348
5349 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
5350 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5351
5352 /* Don't fill PLT entry for static executables. */
5353 if (plt == htab->elf.splt)
5354 {
5355 bfd_put_32 (output_bfd,
5356 plt_index * sizeof (Elf32_External_Rel),
5357 plt->contents + h->plt.offset
5358 + abed->plt->plt_reloc_offset);
5359 bfd_put_32 (output_bfd, - (h->plt.offset
5360 + abed->plt->plt_plt_offset + 4),
5361 plt->contents + h->plt.offset
5362 + abed->plt->plt_plt_offset);
5363 }
e1f98742 5364 }
dd7e64d4
L		 5365 }
5366 else if (eh->plt_got.offset != (bfd_vma) -1)
5367 {
5368 bfd_vma got_offset, plt_offset;
5369 asection *plt, *got, *gotplt;
5370 const bfd_byte *got_plt_entry;
5371
5372 /* Offset of displacement of the indirect jump. */
5373 bfd_vma plt_got_offset = 2;
e1f98742 5374
dd7e64d4
L		 5375 /* Set the entry in the GOT procedure linkage table. */
5376 plt = htab->plt_got;
5377 got = htab->elf.sgot;
5378 gotplt = htab->elf.sgotplt;
5379 got_offset = h->got.offset;
5380
5381 if (got_offset == (bfd_vma) -1
5382 || plt == NULL
5383 || got == NULL
5384 || gotplt == NULL)
5385 abort ();
5386
5387 /* Fill in the entry in the GOT procedure linkage table. */
0e1862bb 5388 if (! bfd_link_pic (info))
252b5132 5389 {
dd7e64d4
L		 5390 got_plt_entry = elf_i386_got_plt_entry;
5391 got_offset += got->output_section->vma + got->output_offset;
252b5132 5392 }
dd7e64d4
L		 5393 else
5394 {
5395 got_plt_entry = elf_i386_pic_got_plt_entry;
5396 got_offset += (got->output_section->vma
5397 + got->output_offset
5398 - gotplt->output_section->vma
5399 - gotplt->output_offset);
5400 }
5401
5402 plt_offset = eh->plt_got.offset;
5403 memcpy (plt->contents + plt_offset, got_plt_entry,
5404 sizeof (elf_i386_got_plt_entry));
5405 bfd_put_32 (output_bfd, got_offset,
5406 plt->contents + plt_offset + plt_got_offset);
5407 }
5408
aec6b87e
L		 5409 if (!local_undefweak
5410 && !h->def_regular
dd7e64d4
L		 5411 && (h->plt.offset != (bfd_vma) -1
5412 || eh->plt_got.offset != (bfd_vma) -1))
5413 {
5414 /* Mark the symbol as undefined, rather than as defined in
5415 the .plt section. Leave the value if there were any
5416 relocations where pointer equality matters (this is a clue
5417 for the dynamic linker, to make function pointer
5418 comparisons work between an application and shared
5419 library), otherwise set it to zero. If a function is only
5420 called from a binary, there is no need to slow down
5421 shared libraries because of that. */
5422 sym->st_shndx = SHN_UNDEF;
5423 if (!h->pointer_equality_needed)
5424 sym->st_value = 0;
252b5132
RH		 5425 }
5426
aec6b87e
L		 5427 /* Don't generate dynamic GOT relocation against undefined weak
5428 symbol in executable. */
13ae64f3 5429 if (h->got.offset != (bfd_vma) -1
67a4f2b7 5430 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
aec6b87e
L		 5431 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0
5432 && !local_undefweak)
252b5132 5433 {
947216bf 5434 Elf_Internal_Rela rel;
252b5132
RH		 5435
5436 /* This symbol has an entry in the global offset table. Set it
5437 up. */
5438
6de2ae4a 5439 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 5440 abort ();
252b5132 5441
6de2ae4a
L		 5442 rel.r_offset = (htab->elf.sgot->output_section->vma
5443 + htab->elf.sgot->output_offset
dc810e39 5444 + (h->got.offset & ~(bfd_vma) 1));
252b5132 5445
dd5724d5
AM		 5446 /* If this is a static link, or it is a -Bsymbolic link and the
5447 symbol is defined locally or was forced to be local because
5448 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 5449 The entry in the global offset table will already have been
5450 initialized in the relocate_section function. */
710ab287 5451 if (h->def_regular
0018b0a3
L		 5452 && h->type == STT_GNU_IFUNC)
5453 {
0e1862bb 5454 if (bfd_link_pic (info))
710ab287
L		 5455 {
5456 /* Generate R_386_GLOB_DAT. */
5457 goto do_glob_dat;
5458 }
5459 else
5460 {
cd2b2c10
L		 5461 asection *plt;
5462
710ab287
L		 5463 if (!h->pointer_equality_needed)
5464 abort ();
5465
5466 /* For non-shared object, we can't use .got.plt, which
5467 contains the real function addres if we need pointer
5468 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 5469 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 5470 bfd_put_32 (output_bfd,
5471 (plt->output_section->vma
5472 + plt->output_offset + h->plt.offset),
6de2ae4a 5473 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 5474 return TRUE;
5475 }
0018b0a3 5476 }
0e1862bb 5477 else if (bfd_link_pic (info)
0018b0a3 5478 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 5479 {
6725bdbf 5480 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 5481 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
5482 }
252b5132
RH		 5483 else
5484 {
dd5724d5 5485 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 5486do_glob_dat:
6725bdbf 5487 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 5488 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 5489 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
5490 }
5491
59d6ffb2 5492 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 5493 }
5494
f5385ebf 5495 if (h->needs_copy)
252b5132 5496 {
947216bf 5497 Elf_Internal_Rela rel;
252b5132
RH		 5498
5499 /* This symbol needs a copy reloc. Set it up. */
5500
ffb2e45b
AM		 5501 if (h->dynindx == -1
5502 || (h->root.type != bfd_link_hash_defined
5503 && h->root.type != bfd_link_hash_defweak)
5504 || htab->srelbss == NULL)
5505 abort ();
252b5132
RH		 5506
5507 rel.r_offset = (h->root.u.def.value
5508 + h->root.u.def.section->output_section->vma
5509 + h->root.u.def.section->output_offset);
5510 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 5511 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 5512 }
5513
b34976b6 5514 return TRUE;
252b5132
RH		 5515}
5516
c25bc9fc
L		 5517/* Finish up local dynamic symbol handling. We set the contents of
5518 various dynamic sections here. */
5519
5520static bfd_boolean
5521elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
5522{
5523 struct elf_link_hash_entry *h
5524 = (struct elf_link_hash_entry *) *slot;
5525 struct bfd_link_info *info
23209a78 5526 = (struct bfd_link_info *) inf;
c25bc9fc
L		 5527
5528 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
5529 h, NULL);
5530}
5531
aec6b87e
L		 5532/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
5533 here since undefined weak symbol may not be dynamic and may not be
5534 called for elf_i386_finish_dynamic_symbol. */
5535
5536static bfd_boolean
5537elf_i386_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
5538 void *inf)
5539{
5540 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
5541 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5542
5543 if (h->root.type != bfd_link_hash_undefweak
5544 || h->dynindx != -1)
5545 return TRUE;
5546
5547 return elf_i386_finish_dynamic_symbol (info->output_bfd,
5548 info, h, NULL);
5549}
5550
38701953
AM		 5551/* Used to decide how to sort relocs in an optimal manner for the
5552 dynamic linker, before writing them out. */
5553
5554static enum elf_reloc_type_class
cae1fbbb 5555elf_i386_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 5556 const asection *rel_sec ATTRIBUTE_UNUSED,
5557 const Elf_Internal_Rela *rela)
38701953 5558{
cae1fbbb
L		 5559 bfd *abfd = info->output_bfd;
5560 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
5561 struct elf_link_hash_table *htab = elf_hash_table (info);
cae1fbbb 5562
d9e3b590
L		 5563 if (htab->dynsym != NULL
5564 && htab->dynsym->contents != NULL)
5565 {
5566 /* Check relocation against STT_GNU_IFUNC symbol if there are
5567 dynamic symbols. */
5568 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
c428ce9d
L		 5569 if (r_symndx != STN_UNDEF)
5570 {
5571 Elf_Internal_Sym sym;
5572 if (!bed->s->swap_symbol_in (abfd,
5573 (htab->dynsym->contents
5574 + r_symndx * sizeof (Elf32_External_Sym)),
5575 0, &sym))
5576 abort ();
d9e3b590 5577
c428ce9d
L		 5578 if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
5579 return reloc_class_ifunc;
5580 }
d9e3b590 5581 }
cae1fbbb 5582
55fd94b0 5583 switch (ELF32_R_TYPE (rela->r_info))
38701953 5584 {
c428ce9d
L		 5585 case R_386_IRELATIVE:
5586 return reloc_class_ifunc;
38701953
AM		 5587 case R_386_RELATIVE:
5588 return reloc_class_relative;
5589 case R_386_JUMP_SLOT:
5590 return reloc_class_plt;
5591 case R_386_COPY:
5592 return reloc_class_copy;
5593 default:
5594 return reloc_class_normal;
5595 }
5596}
5597
252b5132
RH		 5598/* Finish up the dynamic sections. */
5599
b34976b6 5600static bfd_boolean
55fd94b0
AM		 5601elf_i386_finish_dynamic_sections (bfd *output_bfd,
5602 struct bfd_link_info *info)
252b5132 5603{
6725bdbf 5604 struct elf_i386_link_hash_table *htab;
252b5132 5605 bfd *dynobj;
252b5132 5606 asection *sdyn;
25e762b9 5607 const struct elf_i386_backend_data *abed;
252b5132 5608
6725bdbf 5609 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5610 if (htab == NULL)
5611 return FALSE;
5612
ebe50bae 5613 dynobj = htab->elf.dynobj;
3d4d4302 5614 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 5615 abed = get_elf_i386_backend_data (output_bfd);
252b5132 5616
ebe50bae 5617 if (htab->elf.dynamic_sections_created)
252b5132 5618 {
252b5132
RH		 5619 Elf32_External_Dyn *dyncon, *dynconend;
5620
6de2ae4a 5621 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 5622 abort ();
252b5132
RH		 5623
5624 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 5625 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 5626 for (; dyncon < dynconend; dyncon++)
5627 {
5628 Elf_Internal_Dyn dyn;
51b64d56 5629 asection *s;
252b5132
RH		 5630
5631 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5632
5633 switch (dyn.d_tag)
5634 {
5635 default:
25e762b9
RM		 5636 if (abed->is_vxworks
5637 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 5638 break;
0ac8d2ca 5639 continue;
252b5132
RH		 5640
5641 case DT_PLTGOT:
6de2ae4a 5642 s = htab->elf.sgotplt;
8c37241b 5643 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 5644 break;
5645
252b5132 5646 case DT_JMPREL:
6de2ae4a 5647 s = htab->elf.srelplt;
6348e046 5648 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 5649 break;
5650
5651 case DT_PLTRELSZ:
6de2ae4a 5652 s = htab->elf.srelplt;
eea6121a 5653 dyn.d_un.d_val = s->size;
252b5132
RH		 5654 break;
5655
5656 case DT_RELSZ:
5657 /* My reading of the SVR4 ABI indicates that the
5658 procedure linkage table relocs (DT_JMPREL) should be
5659 included in the overall relocs (DT_REL). This is
5660 what Solaris does. However, UnixWare can not handle
5661 that case. Therefore, we override the DT_RELSZ entry
6348e046 5662 here to make it not include the JMPREL relocs. */
6de2ae4a 5663 s = htab->elf.srelplt;
6348e046
AM		 5664 if (s == NULL)
5665 continue;
eea6121a 5666 dyn.d_un.d_val -= s->size;
6348e046
AM		 5667 break;
5668
5669 case DT_REL:
5670 /* We may not be using the standard ELF linker script.
5671 If .rel.plt is the first .rel section, we adjust
5672 DT_REL to not include it. */
6de2ae4a 5673 s = htab->elf.srelplt;
6348e046
AM		 5674 if (s == NULL)
5675 continue;
5676 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
5677 continue;
eea6121a 5678 dyn.d_un.d_ptr += s->size;
252b5132
RH		 5679 break;
5680 }
0ac8d2ca
AM		 5681
5682 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 5683 }
5684
5685 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 5686 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132 5687 {
0e1862bb 5688 if (bfd_link_pic (info))
eac338cf 5689 {
25e762b9
RM		 5690 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
5691 abed->plt->plt0_entry_size);
5692 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5693 abed->plt0_pad_byte,
5694 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 5695 }
252b5132
RH		 5696 else
5697 {
25e762b9
RM		 5698 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
5699 abed->plt->plt0_entry_size);
5700 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5701 abed->plt0_pad_byte,
5702 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 5703 bfd_put_32 (output_bfd,
6de2ae4a
L		 5704 (htab->elf.sgotplt->output_section->vma
5705 + htab->elf.sgotplt->output_offset
6725bdbf 5706 + 4),
25e762b9
RM		 5707 htab->elf.splt->contents
5708 + abed->plt->plt0_got1_offset);
252b5132 5709 bfd_put_32 (output_bfd,
6de2ae4a
L		 5710 (htab->elf.sgotplt->output_section->vma
5711 + htab->elf.sgotplt->output_offset
6725bdbf 5712 + 8),
25e762b9
RM		 5713 htab->elf.splt->contents
5714 + abed->plt->plt0_got2_offset);
eac338cf 5715
25e762b9 5716 if (abed->is_vxworks)
eac338cf
PB		 5717 {
5718 Elf_Internal_Rela rel;
7325306f 5719
eac338cf
PB		 5720 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
5721 On IA32 we use REL relocations so the addend goes in
5722 the PLT directly. */
6de2ae4a
L		 5723 rel.r_offset = (htab->elf.splt->output_section->vma
5724 + htab->elf.splt->output_offset
25e762b9 5725 + abed->plt->plt0_got1_offset);
7325306f 5726 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5727 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5728 htab->srelplt2->contents);
5729 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 5730 rel.r_offset = (htab->elf.splt->output_section->vma
5731 + htab->elf.splt->output_offset
25e762b9 5732 + abed->plt->plt0_got2_offset);
7325306f 5733 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5734 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5735 htab->srelplt2->contents +
5736 sizeof (Elf32_External_Rel));
5737 }
252b5132
RH		 5738 }
5739
5740 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5741 really seem like the right value. */
6de2ae4a 5742 elf_section_data (htab->elf.splt->output_section)
6725bdbf 5743 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 5744
5745 /* Correct the .rel.plt.unloaded relocations. */
0e1862bb 5746 if (abed->is_vxworks && !bfd_link_pic (info))
eac338cf 5747 {
25e762b9
RM		 5748 int num_plts = (htab->elf.splt->size
5749 / abed->plt->plt_entry_size) - 1;
4c9b0de6 5750 unsigned char *p;
eac338cf
PB		 5751
5752 p = htab->srelplt2->contents;
0e1862bb 5753 if (bfd_link_pic (info))
eac338cf
PB		 5754 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5755 else
5756 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5757
5758 for (; num_plts; num_plts--)
5759 {
5760 Elf_Internal_Rela rel;
5761 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5762 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5763 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5764 p += sizeof (Elf32_External_Rel);
5765
5766 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5767 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 5768 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5769 p += sizeof (Elf32_External_Rel);
5770 }
5771 }
252b5132
RH		 5772 }
5773 }
5774
6de2ae4a 5775 if (htab->elf.sgotplt)
252b5132 5776 {
56d4289c
L		 5777 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5778 {
5779 (*_bfd_error_handler)
5780 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5781 return FALSE;
5782 }
5783
12d0ee4a 5784 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5785 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 5786 {
5787 bfd_put_32 (output_bfd,
55fd94b0 5788 (sdyn == NULL ? 0
12d0ee4a 5789 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 5790 htab->elf.sgotplt->contents);
5791 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5792 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 5793 }
252b5132 5794
6de2ae4a 5795 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5796 }
8c37241b 5797
e41b3a13 5798 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5799 if (htab->plt_eh_frame != NULL
5800 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5801 {
5802 if (htab->elf.splt != NULL
5803 && htab->elf.splt->size != 0
5804 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5805 && htab->elf.splt->output_section != NULL
5806 && htab->plt_eh_frame->output_section != NULL)
5807 {
5808 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5809 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5810 + htab->plt_eh_frame->output_offset
5811 + PLT_FDE_START_OFFSET;
5812 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5813 htab->plt_eh_frame->contents
5814 + PLT_FDE_START_OFFSET);
5815 }
5816 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5817 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5818 {
5819 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5820 htab->plt_eh_frame,
5821 htab->plt_eh_frame->contents))
5822 return FALSE;
5823 }
5824 }
5825
6de2ae4a
L		 5826 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5827 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5828
c25bc9fc
L		 5829 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5830 htab_traverse (htab->loc_hash_table,
5831 elf_i386_finish_local_dynamic_symbol,
5832 info);
5833
aec6b87e
L		 5834 /* Fill PLT entries for undefined weak symbols in PIE. */
5835 if (bfd_link_pie (info))
5836 bfd_hash_traverse (&info->hash->table,
5837 elf_i386_pie_finish_undefweak_symbol,
5838 info);
5839
b34976b6 5840 return TRUE;
252b5132
RH		 5841}
5842
3972882e 5843/* Return an array of PLT entry symbol values. */
4c45e5c9 5844
3972882e
L		 5845static bfd_vma *
5846elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5847 asection *relplt)
4c45e5c9 5848{
3972882e
L		 5849 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5850 arelent *p;
5851 long count, i;
5852 bfd_vma *plt_sym_val;
144bed8d 5853 bfd_vma plt_offset;
3972882e
L		 5854 bfd_byte *plt_contents;
5855 const struct elf_i386_backend_data *bed
5856 = get_elf_i386_backend_data (abfd);
5857 Elf_Internal_Shdr *hdr;
5858
5859 /* Get the .plt section contents. */
5860 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5861 if (plt_contents == NULL)
5862 return NULL;
5863 if (!bfd_get_section_contents (abfd, (asection *) plt,
5864 plt_contents, 0, plt->size))
5865 {
5866bad_return:
5867 free (plt_contents);
5868 return NULL;
5869 }
144bed8d 5870
3972882e
L		 5871 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5872 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5873 goto bad_return;
144bed8d 5874
3972882e
L		 5875 hdr = &elf_section_data (relplt)->this_hdr;
5876 count = relplt->size / hdr->sh_entsize;
5877
5878 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5879 if (plt_sym_val == NULL)
5880 goto bad_return;
cca5b8b6 5881
35181b3e 5882 for (i = 0; i < count; i++)
3972882e 5883 plt_sym_val[i] = -1;
cca5b8b6 5884
3972882e
L		 5885 plt_offset = bed->plt->plt_entry_size;
5886 p = relplt->relocation;
5887 for (i = 0; i < count; i++, p++)
144bed8d 5888 {
3972882e
L		 5889 long reloc_index;
5890
6f25f223 5891 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
533d0af0 5892 if (p->howto == NULL)
6f25f223 5893 continue;
533d0af0
L		 5894
5895 if (p->howto->type != R_386_JUMP_SLOT
5896 && p->howto->type != R_386_IRELATIVE)
3972882e
L		 5897 continue;
5898
5899 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
5900 + bed->plt->plt_reloc_offset));
5901 reloc_index /= sizeof (Elf32_External_Rel);
ec1f73bb
AM		 5902 if (reloc_index < count)
5903 plt_sym_val[reloc_index] = plt->vma + plt_offset;
5904
144bed8d 5905 plt_offset += bed->plt->plt_entry_size;
fca6ae69
L		 5906
5907 /* PR binutils/18437: Skip extra relocations in the .rel.plt
5908 section. */
5909 if (plt_offset >= plt->size)
5910 break;
144bed8d
L		 5911 }
5912
3972882e
L		 5913 free (plt_contents);
5914
5915 return plt_sym_val;
5916}
5917
5918/* Similar to _bfd_elf_get_synthetic_symtab. */
5919
5920static long
5921elf_i386_get_synthetic_symtab (bfd *abfd,
5922 long symcount,
5923 asymbol **syms,
5924 long dynsymcount,
5925 asymbol **dynsyms,
5926 asymbol **ret)
5927{
5928 asection *plt = bfd_get_section_by_name (abfd, ".plt");
5929 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
5930 dynsymcount, dynsyms, ret,
5931 plt,
5932 elf_i386_get_plt_sym_val);
4c45e5c9
JJ		 5933}
5934
fdc90cb4
JJ		 5935/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5936
5937static bfd_boolean
5938elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5939{
5940 if (h->plt.offset != (bfd_vma) -1
5941 && !h->def_regular
5942 && !h->pointer_equality_needed)
5943 return FALSE;
5944
5945 return _bfd_elf_hash_symbol (h);
5946}
4c45e5c9 5947
6d00b590 5948#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 5949#define TARGET_LITTLE_NAME "elf32-i386"
5950#define ELF_ARCH bfd_arch_i386
ae95ffa6 5951#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5952#define ELF_MACHINE_CODE EM_386
5953#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5954
5955#define elf_backend_can_gc_sections 1
51b64d56 5956#define elf_backend_can_refcount 1
252b5132
RH		 5957#define elf_backend_want_got_plt 1
5958#define elf_backend_plt_readonly 1
5959#define elf_backend_want_plt_sym 0
5960#define elf_backend_got_header_size 12
e41b3a13 5961#define elf_backend_plt_alignment 4
f7483970 5962#define elf_backend_extern_protected_data 1
bedfd056 5963#define elf_backend_caches_rawsize 1
252b5132 5964
8c29f035
AM		 5965/* Support RELA for objdump of prelink objects. */
5966#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5967#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5968
13ae64f3 5969#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5970
dd5724d5
AM		 5971#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5972#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
5973#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5974#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 5975#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5
AM		 5976
5977#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5978#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5979#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5980#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5981#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5982#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5983#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5984#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5985#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
c5fccbec
DJ		 5986#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5987#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5988#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5989#define elf_backend_relocate_section elf_i386_relocate_section
5990#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5991#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5992#define elf_backend_omit_section_dynsym \
5993 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
fdc90cb4 5994#define elf_backend_hash_symbol elf_i386_hash_symbol
aec6b87e 5995#define elf_backend_fixup_symbol elf_i386_fixup_symbol
dd5724d5 5996
252b5132 5997#include "elf32-target.h"
2bc3c89a
AM		 5998
5999/* FreeBSD support. */
6000
6001#undef TARGET_LITTLE_SYM
6d00b590 6002#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 6003#undef TARGET_LITTLE_NAME
6004#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 6005#undef ELF_OSABI
6006#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 6007
6008/* The kernel recognizes executables as valid only if they carry a
6009 "FreeBSD" label in the ELF header. So we put this label on all
6010 executables and (for simplicity) also all other object files. */
6011
2bc3c89a 6012static void
d8045f23 6013elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 6014{
78245035 6015 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 6016
2bc3c89a 6017#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 6018 {
6019 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
6020 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
6021 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
6022 }
caf47ea6 6023#endif
2bc3c89a
AM		 6024}
6025
6026#undef elf_backend_post_process_headers
d8045f23 6027#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 6028#undef elf32_bed
6029#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 6030
d8045f23
NC		 6031#undef elf_backend_add_symbol_hook
6032
2bc3c89a 6033#include "elf32-target.h"
eac338cf 6034
a6cc6b3b
RO		 6035/* Solaris 2. */
6036
6037#undef TARGET_LITTLE_SYM
6d00b590 6038#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 6039#undef TARGET_LITTLE_NAME
6040#define TARGET_LITTLE_NAME "elf32-i386-sol2"
6041
914082d1
L		 6042#undef elf_backend_post_process_headers
6043
a6cc6b3b
RO		 6044/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
6045 objects won't be recognized. */
6046#undef ELF_OSABI
6047
6048#undef elf32_bed
6049#define elf32_bed elf32_i386_sol2_bed
6050
7dc98aea
RO		 6051/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
6052 boundary. */
84865015 6053#undef elf_backend_static_tls_alignment
7dc98aea
RO		 6054#define elf_backend_static_tls_alignment 8
6055
a6cc6b3b
RO		 6056/* The Solaris 2 ABI requires a plt symbol on all platforms.
6057
6058 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
6059 File, p.63. */
84865015 6060#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 6061#define elf_backend_want_plt_sym 1
6062
84865015
NC		 6063#undef elf_backend_strtab_flags
6064#define elf_backend_strtab_flags SHF_STRINGS
6065
5522f910
NC		 6066/* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
6067 has a type >= SHT_LOOS. Returns TRUE if these fields were initialised
6068 FALSE otherwise. ISECTION is the best guess matching section from the
6069 input bfd IBFD, but it might be NULL. */
6070
84865015 6071static bfd_boolean
5522f910
NC		 6072elf32_i386_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
6073 bfd *obfd ATTRIBUTE_UNUSED,
6074 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
6075 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 6076{
6077 /* PR 19938: FIXME: Need to add code for setting the sh_info
5522f910
NC		 6078 and sh_link fields of Solaris specific section types. */
6079 return FALSE;
84865015 6080
5522f910 6081 /* Based upon Oracle Solaris 11.3 Linkers and Libraries Guide, Ch. 13,
84865015
NC		 6082 Object File Format, Table 13-9 ELF sh_link and sh_info Interpretation:
6083
6084http://docs.oracle.com/cd/E53394_01/html/E54813/chapter6-94076.html#scrolltoc
6085
6086 The following values should be set:
6087
6088Type Link Info
6089-----------------------------------------------------------------------------
6090SHT_SUNW_ancillary The section header index of 0
6091 [0x6fffffee] the associated string table.
6092
6093SHT_SUNW_capinfo The section header index of For a dynamic object, the
6094 [0x6ffffff0] the associated symbol table. section header index of
6095 the associated
6096 SHT_SUNW_capchain table,
6097 otherwise 0.
6098
6099SHT_SUNW_symsort The section header index of 0
6100 [0x6ffffff1] the associated symbol table.
6101
6102SHT_SUNW_tlssort The section header index of 0
6103 [0x6ffffff2] the associated symbol table.
6104
6105SHT_SUNW_LDYNSYM The section header index of One greater than the
6106 [0x6ffffff3] the associated string table. symbol table index of the
6107 This index is the same string last local symbol,
6108 table used by the SHT_DYNSYM STB_LOCAL. Since
6109 section. SHT_SUNW_LDYNSYM only
6110 contains local symbols,
6111 sh_info is equivalent to
6112 the number of symbols in
6113 the table.
6114
6115SHT_SUNW_cap If symbol capabilities exist, If any capabilities refer
6116 [0x6ffffff5] the section header index of to named strings, the
6117 the associated section header index of
6118 SHT_SUNW_capinfo table, the associated string
6119 otherwise 0. table, otherwise 0.
6120
6121SHT_SUNW_move The section header index of 0
6122 [0x6ffffffa] the associated symbol table.
6123
6124SHT_SUNW_COMDAT 0 0
6125 [0x6ffffffb]
6126
6127SHT_SUNW_syminfo The section header index of The section header index
6128 [0x6ffffffc] the associated symbol table. of the associated
6129 .dynamic section.
6130
6131SHT_SUNW_verdef The section header index of The number of version
6132 [0x6ffffffd] the associated string table. definitions within the
6133 section.
6134
6135SHT_SUNW_verneed The section header index of The number of version
6136 [0x6ffffffe] the associated string table. dependencies within the
6137 section.
6138
6139SHT_SUNW_versym The section header index of 0
6140 [0x6fffffff] the associated symbol table. */
84865015
NC		 6141}
6142
5522f910
NC		 6143#undef elf_backend_copy_special_section_fields
6144#define elf_backend_copy_special_section_fields elf32_i386_copy_solaris_special_section_fields
84865015 6145
a6cc6b3b
RO		 6146#include "elf32-target.h"
6147
bf64a951
L		 6148/* Intel MCU support. */
6149
6150static bfd_boolean
6151elf32_iamcu_elf_object_p (bfd *abfd)
6152{
6153 /* Set the right machine number for an IAMCU elf32 file. */
6154 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
6155 return TRUE;
6156}
6157
6158#undef TARGET_LITTLE_SYM
6159#define TARGET_LITTLE_SYM iamcu_elf32_vec
6160#undef TARGET_LITTLE_NAME
6161#define TARGET_LITTLE_NAME "elf32-iamcu"
84865015 6162#undef ELF_ARCH
bf64a951
L		 6163#define ELF_ARCH bfd_arch_iamcu
6164
6165#undef ELF_MACHINE_CODE
6166#define ELF_MACHINE_CODE EM_IAMCU
6167
6168#undef ELF_OSABI
6169
6170#undef elf32_bed
6171#define elf32_bed elf32_iamcu_bed
6172
6173#undef elf_backend_object_p
6174#define elf_backend_object_p elf32_iamcu_elf_object_p
6175
6176#undef elf_backend_static_tls_alignment
6177
6178#undef elf_backend_want_plt_sym
6179#define elf_backend_want_plt_sym 0
6180
84865015 6181#undef elf_backend_strtab_flags
5522f910 6182#undef elf_backend_copy_special_section_fields
84865015 6183
bf64a951
L		 6184#include "elf32-target.h"
6185
6186/* Restore defaults. */
6187#undef ELF_ARCH
6188#define ELF_ARCH bfd_arch_i386
6189#undef ELF_MACHINE_CODE
6190#define ELF_MACHINE_CODE EM_386
6191
a27e4371
RM		 6192/* Native Client support. */
6193
6194#undef TARGET_LITTLE_SYM
6d00b590 6195#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 6196#undef TARGET_LITTLE_NAME
6197#define TARGET_LITTLE_NAME "elf32-i386-nacl"
6198#undef elf32_bed
6199#define elf32_bed elf32_i386_nacl_bed
6200
6201#undef ELF_MAXPAGESIZE
6202#define ELF_MAXPAGESIZE 0x10000
6203
6204/* Restore defaults. */
6205#undef ELF_OSABI
6206#undef elf_backend_want_plt_sym
6207#define elf_backend_want_plt_sym 0
6208#undef elf_backend_post_process_headers
a27e4371
RM		 6209#undef elf_backend_static_tls_alignment
6210
6211/* NaCl uses substantially different PLT entries for the same effects. */
6212
6213#undef elf_backend_plt_alignment
6214#define elf_backend_plt_alignment 5
6215#define NACL_PLT_ENTRY_SIZE 64
6216#define NACLMASK 0xe0 /* 32-byte alignment mask. */
6217
6218static const bfd_byte elf_i386_nacl_plt0_entry[] =
6219 {
6220 0xff, 0x35, /* pushl contents of address */
6221 0, 0, 0, 0, /* replaced with address of .got + 4. */
6222 0x8b, 0x0d, /* movl contents of address, %ecx */
6223 0, 0, 0, 0, /* replaced with address of .got + 8. */
6224 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
6225 0xff, 0xe1 /* jmp *%ecx */
6226 };
6227
6228static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
6229 {
6230 0x8b, 0x0d, /* movl contents of address, %ecx */
6231 0, 0, 0, 0, /* replaced with GOT slot address. */
6232 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
6233 0xff, 0xe1, /* jmp *%ecx */
6234
6235 /* Pad to the next 32-byte boundary with nop instructions. */
6236 0x90,
6237 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6238 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6239
6240 /* Lazy GOT entries point here (32-byte aligned). */
6241 0x68, /* pushl immediate */
6242 0, 0, 0, 0, /* replaced with reloc offset. */
6243 0xe9, /* jmp relative */
6244 0, 0, 0, 0, /* replaced with offset to .plt. */
6245
6246 /* Pad to the next 32-byte boundary with nop instructions. */
6247 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6248 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6249 0x90, 0x90
6250 };
6251
6252static const bfd_byte
6253elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
6254 {
6255 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
6256 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
6257 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
6258 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 6259
6260 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
6261 so pad to that size with nop instructions. */
6262 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 6263 };
6264
6265static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
6266 {
6267 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
6268 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
6269 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
6270 0xff, 0xe1, /* jmp *%ecx */
6271
6272 /* Pad to the next 32-byte boundary with nop instructions. */
6273 0x90,
6274 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6275 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6276
6277 /* Lazy GOT entries point here (32-byte aligned). */
6278 0x68, /* pushl immediate */
6279 0, 0, 0, 0, /* replaced with offset into relocation table. */
6280 0xe9, /* jmp relative */
6281 0, 0, 0, 0, /* replaced with offset to start of .plt. */
6282
6283 /* Pad to the next 32-byte boundary with nop instructions. */
6284 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6285 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6286 0x90, 0x90
6287 };
6288
6289static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
6290 {
6291#if (PLT_CIE_LENGTH != 20 \
6292 || PLT_FDE_LENGTH != 36 \
6293 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
6294 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
6295# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
6296#endif
6297 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
6298 0, 0, 0, 0, /* CIE ID */
6299 1, /* CIE version */
6300 'z', 'R', 0, /* Augmentation string */
6301 1, /* Code alignment factor */
6302 0x7c, /* Data alignment factor: -4 */
6303 8, /* Return address column */
6304 1, /* Augmentation size */
6305 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
6306 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
6307 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
6308 DW_CFA_nop, DW_CFA_nop,
6309
6310 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
6311 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
6312 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
6313 0, 0, 0, 0, /* .plt size goes here */
6314 0, /* Augmentation size */
6315 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
6316 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
6317 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
6318 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
6319 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
6320 13, /* Block length */
6321 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
6322 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
6323 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
6324 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
6325 DW_CFA_nop, DW_CFA_nop
6326 };
6327
6328static const struct elf_i386_plt_layout elf_i386_nacl_plt =
6329 {
6330 elf_i386_nacl_plt0_entry, /* plt0_entry */
6331 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
6332 2, /* plt0_got1_offset */
6333 8, /* plt0_got2_offset */
6334 elf_i386_nacl_plt_entry, /* plt_entry */
6335 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
6336 2, /* plt_got_offset */
6337 33, /* plt_reloc_offset */
6338 38, /* plt_plt_offset */
6339 32, /* plt_lazy_offset */
6340 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
6341 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
6342 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
6343 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
6344 };
6345
6346static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
6347 {
6348 &elf_i386_nacl_plt, /* plt */
6349 0x90, /* plt0_pad_byte: nop insn */
6350 0, /* is_vxworks */
6351 };
6352
64b384e1
RM		 6353static bfd_boolean
6354elf32_i386_nacl_elf_object_p (bfd *abfd)
6355{
6356 /* Set the right machine number for a NaCl i386 ELF32 file. */
6357 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
6358 return TRUE;
6359}
6360
a27e4371
RM		 6361#undef elf_backend_arch_data
6362#define elf_backend_arch_data &elf_i386_nacl_arch_bed
6363
64b384e1
RM		 6364#undef elf_backend_object_p
6365#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 6366#undef elf_backend_modify_segment_map
6367#define elf_backend_modify_segment_map nacl_modify_segment_map
6368#undef elf_backend_modify_program_headers
6369#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 6370#undef elf_backend_final_write_processing
6371#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 6372
a27e4371
RM		 6373#include "elf32-target.h"
6374
5a68afcf 6375/* Restore defaults. */
64b384e1 6376#undef elf_backend_object_p
5a68afcf
RM		 6377#undef elf_backend_modify_segment_map
6378#undef elf_backend_modify_program_headers
887badb3 6379#undef elf_backend_final_write_processing
5a68afcf 6380
eac338cf
PB		 6381/* VxWorks support. */
6382
6383#undef TARGET_LITTLE_SYM
6d00b590 6384#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 6385#undef TARGET_LITTLE_NAME
6386#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 6387#undef ELF_OSABI
a27e4371
RM		 6388#undef elf_backend_plt_alignment
6389#define elf_backend_plt_alignment 4
eac338cf 6390
23209a78
RM		 6391static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
6392 {
25e762b9 6393 &elf_i386_plt, /* plt */
23209a78
RM		 6394 0x90, /* plt0_pad_byte */
6395 1, /* is_vxworks */
6396 };
eac338cf 6397
23209a78
RM		 6398#undef elf_backend_arch_data
6399#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 6400
13285a1b 6401#undef elf_backend_relocs_compatible
eac338cf
PB		 6402#undef elf_backend_add_symbol_hook
6403#define elf_backend_add_symbol_hook \
6404 elf_vxworks_add_symbol_hook
6405#undef elf_backend_link_output_symbol_hook
6406#define elf_backend_link_output_symbol_hook \
9c72ff84 6407 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 6408#undef elf_backend_emit_relocs
6409#define elf_backend_emit_relocs elf_vxworks_emit_relocs
6410#undef elf_backend_final_write_processing
6411#define elf_backend_final_write_processing \
6412 elf_vxworks_final_write_processing
7dc98aea 6413#undef elf_backend_static_tls_alignment
eac338cf
PB		 6414
6415/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
6416 define it. */
6417#undef elf_backend_want_plt_sym
6418#define elf_backend_want_plt_sym 1
6419
6420#undef elf32_bed
6421#define elf32_bed elf32_i386_vxworks_bed
6422
6423#include "elf32-target.h"
GDB Binutils - Deliverables
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