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Add the GOT base for GOT32 relocs against IFUNC
[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
0ffa91dd
NC		 1849 BFD_ASSERT (is_i386_elf (abfd));
1850
6725bdbf 1851 htab = elf_i386_hash_table (info);
4dfe6ac6 1852 if (htab == NULL)
c337a162
L		 1853 {
1854 sec->check_relocs_failed = 1;
1855 return FALSE;
1856 }
4dfe6ac6 1857
bedfd056
L		 1858 /* Get the section contents. */
1859 if (elf_section_data (sec)->this_hdr.contents != NULL)
1860 contents = elf_section_data (sec)->this_hdr.contents;
1861 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1862 {
1863 sec->check_relocs_failed = 1;
1864 return FALSE;
1865 }
1866
dd7e64d4
L		 1867 use_plt_got = (!get_elf_i386_backend_data (abfd)->is_vxworks
1868 && (get_elf_i386_backend_data (abfd)
1869 == &elf_i386_arch_bed));
1870
0ffa91dd 1871 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1872 sym_hashes = elf_sym_hashes (abfd);
252b5132 1873
252b5132
RH		 1874 sreloc = NULL;
1875
1876 rel_end = relocs + sec->reloc_count;
1877 for (rel = relocs; rel < rel_end; rel++)
1878 {
13ae64f3 1879 unsigned int r_type;
252b5132
RH		 1880 unsigned long r_symndx;
1881 struct elf_link_hash_entry *h;
d5597ebc 1882 struct elf_i386_link_hash_entry *eh;
4c544807
L		 1883 Elf_Internal_Sym *isym;
1884 const char *name;
06a6a421 1885 bfd_boolean size_reloc;
252b5132
RH		 1886
1887 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1888 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1889
d9bc7a44 1890 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1891 {
d003868e
AM		 1892 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1893 abfd,
8f615d07 1894 r_symndx);
c337a162 1895 goto error_return;
f5f31454
L		 1896 }
1897
252b5132 1898 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1899 {
1900 /* A local symbol. */
c2e61a4e
L		 1901 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1902 abfd, r_symndx);
1903 if (isym == NULL)
c337a162 1904 goto error_return;
c25bc9fc
L		 1905
1906 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1907 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1908 {
9fff0c39 1909 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1910 if (h == NULL)
c337a162 1911 goto error_return;
6bbec505 1912
c25bc9fc
L		 1913 /* Fake a STT_GNU_IFUNC symbol. */
1914 h->type = STT_GNU_IFUNC;
1915 h->def_regular = 1;
1916 h->ref_regular = 1;
1917 h->forced_local = 1;
1918 h->root.type = bfd_link_hash_defined;
1919 }
1920 else
1921 h = NULL;
1922 }
252b5132 1923 else
71cb9464 1924 {
4c544807 1925 isym = NULL;
71cb9464
L		 1926 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1927 while (h->root.type == bfd_link_hash_indirect
1928 || h->root.type == bfd_link_hash_warning)
1929 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1930 }
cbe950e9 1931
d5597ebc 1932 eh = (struct elf_i386_link_hash_entry *) h;
c25bc9fc
L		 1933 if (h != NULL)
1934 {
cbe950e9
L		 1935 switch (r_type)
1936 {
1937 default:
1938 break;
1939
d5597ebc
L		 1940 case R_386_GOTOFF:
1941 eh->gotoff_ref = 1;
cbe950e9
L		 1942 case R_386_32:
1943 case R_386_PC32:
1944 case R_386_PLT32:
1945 case R_386_GOT32:
02a86693 1946 case R_386_GOT32X:
9d4057ee
AM		 1947 if (htab->elf.dynobj == NULL)
1948 htab->elf.dynobj = abfd;
466ee2af
L		 1949 /* Create the ifunc sections for static executables. */
1950 if (h->type == STT_GNU_IFUNC
1951 && !_bfd_elf_create_ifunc_sections (htab->elf.dynobj,
1952 info))
c337a162 1953 goto error_return;
cbe950e9
L		 1954 break;
1955 }
1956
ad1e85de
L		 1957 /* It is referenced by a non-shared object. */
1958 h->ref_regular = 1;
61315175 1959 h->root.non_ir_ref = 1;
13a2df29
L		 1960
1961 if (h->type == STT_GNU_IFUNC)
1962 elf_tdata (info->output_bfd)->has_gnu_symbols
1963 |= elf_gnu_symbol_ifunc;
71cb9464 1964 }
252b5132 1965
bedfd056 1966 if (! elf_i386_tls_transition (info, abfd, sec, contents,
142411ca
L		 1967 symtab_hdr, sym_hashes,
1968 &r_type, GOT_UNKNOWN,
bedfd056 1969 rel, rel_end, h, r_symndx, FALSE))
c337a162 1970 goto error_return;
13ae64f3
JJ		 1971
1972 switch (r_type)
252b5132 1973 {
37e55690
JJ		 1974 case R_386_TLS_LDM:
1975 htab->tls_ldm_got.refcount += 1;
1976 goto create_got;
1977
1978 case R_386_PLT32:
1979 /* This symbol requires a procedure linkage table entry. We
1980 actually build the entry in adjust_dynamic_symbol,
1981 because this might be a case of linking PIC code which is
1982 never referenced by a dynamic object, in which case we
1983 don't need to generate a procedure linkage table entry
1984 after all. */
1985
1986 /* If this is a local symbol, we resolve it directly without
1987 creating a procedure linkage table entry. */
1988 if (h == NULL)
1989 continue;
1990
aec6b87e 1991 eh->has_got_reloc = 1;
f5385ebf 1992 h->needs_plt = 1;
37e55690
JJ		 1993 h->plt.refcount += 1;
1994 break;
1995
6a3e1bae 1996 case R_386_SIZE32:
06a6a421 1997 size_reloc = TRUE;
6a3e1bae
L		 1998 goto do_size;
1999
13ae64f3 2000 case R_386_TLS_IE_32:
37e55690
JJ		 2001 case R_386_TLS_IE:
2002 case R_386_TLS_GOTIE:
0e1862bb 2003 if (!bfd_link_executable (info))
13ae64f3 2004 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 2005 /* Fall through */
2006
252b5132 2007 case R_386_GOT32:
02a86693 2008 case R_386_GOT32X:
13ae64f3 2009 case R_386_TLS_GD:
67a4f2b7
AO		 2010 case R_386_TLS_GOTDESC:
2011 case R_386_TLS_DESC_CALL:
252b5132 2012 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 2013 {
2014 int tls_type, old_tls_type;
2015
2016 switch (r_type)
2017 {
2018 default:
02a86693
L		 2019 case R_386_GOT32:
2020 case R_386_GOT32X:
2021 tls_type = GOT_NORMAL;
2022 break;
13ae64f3 2023 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 2024 case R_386_TLS_GOTDESC:
2025 case R_386_TLS_DESC_CALL:
2026 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 2027 case R_386_TLS_IE_32:
2028 if (ELF32_R_TYPE (rel->r_info) == r_type)
2029 tls_type = GOT_TLS_IE_NEG;
2030 else
ebcfb3c0
JJ		 2031 /* If this is a GD->IE transition, we may use either of
2032 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 2033 tls_type = GOT_TLS_IE;
2034 break;
2035 case R_386_TLS_IE:
2036 case R_386_TLS_GOTIE:
2037 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 2038 }
2039
2040 if (h != NULL)
2041 {
2042 h->got.refcount += 1;
2043 old_tls_type = elf_i386_hash_entry(h)->tls_type;
2044 }
2045 else
2046 {
2047 bfd_signed_vma *local_got_refcounts;
2048
2049 /* This is a global offset table entry for a local symbol. */
2050 local_got_refcounts = elf_local_got_refcounts (abfd);
2051 if (local_got_refcounts == NULL)
2052 {
2053 bfd_size_type size;
2054
2055 size = symtab_hdr->sh_info;
67a4f2b7
AO		 2056 size *= (sizeof (bfd_signed_vma)
2057 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 2058 local_got_refcounts = (bfd_signed_vma *)
2059 bfd_zalloc (abfd, size);
13ae64f3 2060 if (local_got_refcounts == NULL)
c337a162 2061 goto error_return;
13ae64f3 2062 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 2063 elf_i386_local_tlsdesc_gotent (abfd)
2064 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 2065 elf_i386_local_got_tls_type (abfd)
67a4f2b7 2066 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 2067 }
2068 local_got_refcounts[r_symndx] += 1;
2069 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
2070 }
2071
37e55690
JJ		 2072 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
2073 tls_type |= old_tls_type;
13ae64f3
JJ		 2074 /* If a TLS symbol is accessed using IE at least once,
2075 there is no point to use dynamic model for it. */
ebcfb3c0 2076 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 2077 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 2078 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 2079 {
67a4f2b7 2080 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 2081 tls_type = old_tls_type;
67a4f2b7
AO		 2082 else if (GOT_TLS_GD_ANY_P (old_tls_type)
2083 && GOT_TLS_GD_ANY_P (tls_type))
2084 tls_type |= old_tls_type;
13ae64f3
JJ		 2085 else
2086 {
09a24cbf 2087 if (h)
4c544807
L		 2088 name = h->root.root.string;
2089 else
2090 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
2091 NULL);
13ae64f3 2092 (*_bfd_error_handler)
d003868e 2093 (_("%B: `%s' accessed both as normal and "
55fd94b0 2094 "thread local symbol"),
4c544807 2095 abfd, name);
68c4a57e 2096 bfd_set_error (bfd_error_bad_value);
c337a162 2097 goto error_return;
13ae64f3
JJ		 2098 }
2099 }
2100
2101 if (old_tls_type != tls_type)
2102 {
2103 if (h != NULL)
2104 elf_i386_hash_entry (h)->tls_type = tls_type;
2105 else
2106 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
2107 }
2108 }
0ac8d2ca
AM		 2109 /* Fall through */
2110
2111 case R_386_GOTOFF:
2112 case R_386_GOTPC:
13ae64f3 2113 create_got:
6de2ae4a 2114 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 2115 {
2116 if (htab->elf.dynobj == NULL)
2117 htab->elf.dynobj = abfd;
6de2ae4a 2118 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c337a162 2119 goto error_return;
0ac8d2ca 2120 }
37e55690 2121 if (r_type != R_386_TLS_IE)
aec6b87e
L		 2122 {
2123 if (eh != NULL)
2124 eh->has_got_reloc = 1;
2125 break;
2126 }
37e55690 2127 /* Fall through */
252b5132 2128
37e55690
JJ		 2129 case R_386_TLS_LE_32:
2130 case R_386_TLS_LE:
aec6b87e
L		 2131 if (eh != NULL)
2132 eh->has_got_reloc = 1;
0e1862bb 2133 if (bfd_link_executable (info))
37e55690 2134 break;
bffbf940 2135 info->flags |= DF_STATIC_TLS;
aec6b87e 2136 goto do_relocation;
252b5132
RH		 2137
2138 case R_386_32:
2139 case R_386_PC32:
aec6b87e
L		 2140 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
2141 eh->has_non_got_reloc = 1;
2142do_relocation:
d1ed1c7d
L		 2143 /* STT_GNU_IFUNC symbol must go through PLT even if it is
2144 locally defined and undefined symbol may turn out to be
2145 a STT_GNU_IFUNC symbol later. */
2146 if (h != NULL
2147 && (bfd_link_executable (info)
2148 || ((h->type == STT_GNU_IFUNC
2149 || h->root.type == bfd_link_hash_undefweak
2150 || h->root.type == bfd_link_hash_undefined)
2151 && SYMBOLIC_BIND (info, h))))
6725bdbf 2152 {
12d0ee4a 2153 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 2154 need a copy reloc. We can't check reliably at this
2155 stage whether the section is read-only, as input
2156 sections have not yet been mapped to output sections.
2157 Tentatively set the flag for now, and correct in
2158 adjust_dynamic_symbol. */
f5385ebf 2159 h->non_got_ref = 1;
12d0ee4a
AM		 2160
2161 /* We may need a .plt entry if the function this reloc
2162 refers to is in a shared lib. */
51b64d56 2163 h->plt.refcount += 1;
4b627c18
L		 2164 if (r_type == R_386_PC32)
2165 {
2166 /* Since something like ".long foo - ." may be used
2167 as pointer, make sure that PLT is used if foo is
2168 a function defined in a shared library. */
2169 if ((sec->flags & SEC_CODE) == 0)
2170 h->pointer_equality_needed = 1;
2171 }
2172 else
04ebc307
L		 2173 {
2174 h->pointer_equality_needed = 1;
2175 /* R_386_32 can be resolved at run-time. */
2176 if (r_type == R_386_32
2177 && (sec->flags & SEC_READONLY) == 0)
2178 eh->func_pointer_refcount += 1;
2179 }
6725bdbf 2180 }
7843f00e 2181
06a6a421 2182 size_reloc = FALSE;
6a3e1bae 2183do_size:
252b5132 2184 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 2185 against a global symbol, or a non PC relative reloc
2186 against a local symbol, then we need to copy the reloc
2187 into the shared library. However, if we are linking with
2188 -Bsymbolic, we do not need to copy a reloc against a
2189 global symbol which is defined in an object we are
2190 including in the link (i.e., DEF_REGULAR is set). At
2191 this point we have not seen all the input files, so it is
2192 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 2193 later (it is never cleared). In case of a weak definition,
2194 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 2195 a shared library. We account for that possibility below by
1f655a09
L		 2196 storing information in the relocs_copied field of the hash
2197 table entry. A similar situation occurs when creating
2198 shared libraries and symbol visibility changes render the
12d0ee4a 2199 symbol local.
56882138 2200
12d0ee4a
AM		 2201 If on the other hand, we are creating an executable, we
2202 may need to keep relocations for symbols satisfied by a
2203 dynamic library if we manage to avoid copy relocs for the
2204 symbol. */
0e1862bb 2205 if ((bfd_link_pic (info)
12d0ee4a 2206 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 2207 && (r_type != R_386_PC32
12d0ee4a 2208 || (h != NULL
4e0c91e4
L		 2209 && (! (bfd_link_pie (info)
2210 || SYMBOLIC_BIND (info, h))
12d0ee4a 2211 || h->root.type == bfd_link_hash_defweak
f5385ebf 2212 || !h->def_regular))))
a23b6845 2213 || (ELIMINATE_COPY_RELOCS
0e1862bb 2214 && !bfd_link_pic (info)
12d0ee4a
AM		 2215 && (sec->flags & SEC_ALLOC) != 0
2216 && h != NULL
12d0ee4a 2217 && (h->root.type == bfd_link_hash_defweak
0f88be7a 2218 || !h->def_regular)))
252b5132 2219 {
e03a8ed8
L		 2220 struct elf_dyn_relocs *p;
2221 struct elf_dyn_relocs **head;
ec338859 2222
12d0ee4a
AM		 2223 /* We must copy these reloc types into the output file.
2224 Create a reloc section in dynobj and make room for
2225 this reloc. */
252b5132
RH		 2226 if (sreloc == NULL)
2227 {
0ac8d2ca
AM		 2228 if (htab->elf.dynobj == NULL)
2229 htab->elf.dynobj = abfd;
2230
83bac4b0
NC		 2231 sreloc = _bfd_elf_make_dynamic_reloc_section
2232 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
2233
252b5132 2234 if (sreloc == NULL)
c337a162 2235 goto error_return;
252b5132
RH		 2236 }
2237
0c715baa
AM		 2238 /* If this is a global symbol, we count the number of
2239 relocations we need for this symbol. */
2240 if (h != NULL)
252b5132 2241 {
d5597ebc 2242 head = &eh->dyn_relocs;
0c715baa
AM		 2243 }
2244 else
2245 {
ec338859
AM		 2246 /* Track dynamic relocs needed for local syms too.
2247 We really need local syms available to do this
2248 easily. Oh well. */
87d72d41 2249 void **vpp;
ec338859 2250 asection *s;
87d72d41
AM		 2251
2252 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2253 abfd, r_symndx);
2254 if (isym == NULL)
c337a162 2255 goto error_return;
87d72d41
AM		 2256
2257 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 2258 if (s == NULL)
87d72d41 2259 s = sec;
ec338859 2260
e81d3500 2261 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 2262 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 2263 }
2264
2265 p = *head;
2266 if (p == NULL || p->sec != sec)
2267 {
2268 bfd_size_type amt = sizeof *p;
a50b1753
NC		 2269 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
2270 amt);
ec338859 2271 if (p == NULL)
c337a162 2272 goto error_return;
ec338859
AM		 2273 p->next = *head;
2274 *head = p;
2275 p->sec = sec;
2276 p->count = 0;
2277 p->pc_count = 0;
252b5132 2278 }
ec338859
AM		 2279
2280 p->count += 1;
06a6a421
L		 2281 /* Count size relocation as PC-relative relocation. */
2282 if (r_type == R_386_PC32 || size_reloc)
ec338859 2283 p->pc_count += 1;
252b5132 2284 }
252b5132
RH		 2285 break;
2286
2287 /* This relocation describes the C++ object vtable hierarchy.
2288 Reconstruct it for later use during GC. */
2289 case R_386_GNU_VTINHERIT:
d17e0c6e 2290 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c337a162 2291 goto error_return;
252b5132
RH		 2292 break;
2293
2294 /* This relocation describes which C++ vtable entries are actually
2295 used. Record for later use during GC. */
2296 case R_386_GNU_VTENTRY:
c6aa130f
MS		 2297 BFD_ASSERT (h != NULL);
2298 if (h != NULL
2299 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c337a162 2300 goto error_return;
252b5132
RH		 2301 break;
2302
2303 default:
2304 break;
2305 }
dd7e64d4
L		 2306
2307 if (use_plt_got
2308 && h != NULL
2309 && h->plt.refcount > 0
8ded2ddc
L		 2310 && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
2311 || h->got.refcount > 0)
dd7e64d4
L		 2312 && htab->plt_got == NULL)
2313 {
2314 /* Create the GOT procedure linkage table. */
2315 unsigned int plt_got_align;
2316 const struct elf_backend_data *bed;
2317
2318 bed = get_elf_backend_data (info->output_bfd);
2319 BFD_ASSERT (sizeof (elf_i386_got_plt_entry) == 8
2320 && (sizeof (elf_i386_got_plt_entry)
2321 == sizeof (elf_i386_pic_got_plt_entry)));
2322 plt_got_align = 3;
2323
2324 if (htab->elf.dynobj == NULL)
2325 htab->elf.dynobj = abfd;
2326 htab->plt_got
2327 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2328 ".plt.got",
2329 (bed->dynamic_sec_flags
2330 | SEC_ALLOC
2331 | SEC_CODE
2332 | SEC_LOAD
2333 | SEC_READONLY));
2334 if (htab->plt_got == NULL
2335 || !bfd_set_section_alignment (htab->elf.dynobj,
2336 htab->plt_got,
2337 plt_got_align))
c337a162 2338 goto error_return;
dd7e64d4 2339 }
c1d11331 2340
52bf37dd 2341 if (r_type == R_386_GOT32X
c1d11331 2342 && (h == NULL || h->type != STT_GNU_IFUNC))
02a86693 2343 sec->need_convert_load = 1;
252b5132
RH		 2344 }
2345
bedfd056
L		 2346 if (elf_section_data (sec)->this_hdr.contents != contents)
2347 {
2348 if (!info->keep_memory)
2349 free (contents);
2350 else
2351 {
2352 /* Cache the section contents for elf_link_input_bfd. */
2353 elf_section_data (sec)->this_hdr.contents = contents;
2354 }
2355 }
2356
b34976b6 2357 return TRUE;
c337a162
L		 2358
2359error_return:
bedfd056
L		 2360 if (elf_section_data (sec)->this_hdr.contents != contents)
2361 free (contents);
c337a162
L		 2362 sec->check_relocs_failed = 1;
2363 return FALSE;
252b5132
RH		 2364}
2365
2366/* Return the section that should be marked against GC for a given
2367 relocation. */
2368
2369static asection *
55fd94b0 2370elf_i386_gc_mark_hook (asection *sec,
07adf181 2371 struct bfd_link_info *info,
55fd94b0
AM		 2372 Elf_Internal_Rela *rel,
2373 struct elf_link_hash_entry *h,
2374 Elf_Internal_Sym *sym)
252b5132
RH		 2375{
2376 if (h != NULL)
07adf181
AM		 2377 switch (ELF32_R_TYPE (rel->r_info))
2378 {
2379 case R_386_GNU_VTINHERIT:
2380 case R_386_GNU_VTENTRY:
2381 return NULL;
2382 }
2383
2384 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 2385}
2386
aec6b87e
L		 2387/* Remove undefined weak symbol from the dynamic symbol table if it
2388 is resolved to 0. */
2389
2390static bfd_boolean
2391elf_i386_fixup_symbol (struct bfd_link_info *info,
2392 struct elf_link_hash_entry *h)
2393{
2394 if (h->dynindx != -1
2395 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
e62b9723 2396 elf_i386_hash_entry (h)->has_got_reloc,
aec6b87e
L		 2397 elf_i386_hash_entry (h)))
2398 {
2399 h->dynindx = -1;
2400 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2401 h->dynstr_index);
2402 }
2403 return TRUE;
2404}
2405
252b5132
RH		 2406/* Adjust a symbol defined by a dynamic object and referenced by a
2407 regular object. The current definition is in some section of the
2408 dynamic object, but we're not including those sections. We have to
2409 change the definition to something the rest of the link can
2410 understand. */
2411
b34976b6 2412static bfd_boolean
55fd94b0
AM		 2413elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2414 struct elf_link_hash_entry *h)
252b5132 2415{
6725bdbf 2416 struct elf_i386_link_hash_table *htab;
252b5132 2417 asection *s;
5ca5bb35
L		 2418 struct elf_i386_link_hash_entry *eh;
2419 struct elf_dyn_relocs *p;
252b5132 2420
cbe950e9
L		 2421 /* STT_GNU_IFUNC symbol must go through PLT. */
2422 if (h->type == STT_GNU_IFUNC)
2423 {
73bcf233
L		 2424 /* All local STT_GNU_IFUNC references must be treate as local
2425 calls via local PLT. */
5ca5bb35
L		 2426 if (h->ref_regular
2427 && SYMBOL_CALLS_LOCAL (info, h))
2428 {
73bcf233 2429 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2430 struct elf_dyn_relocs **pp;
2431
2432 eh = (struct elf_i386_link_hash_entry *) h;
2433 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2434 {
2435 pc_count += p->pc_count;
2436 p->count -= p->pc_count;
2437 p->pc_count = 0;
73bcf233 2438 count += p->count;
5ca5bb35
L		 2439 if (p->count == 0)
2440 *pp = p->next;
2441 else
2442 pp = &p->next;
2443 }
2444
73bcf233 2445 if (pc_count || count)
5ca5bb35
L		 2446 {
2447 h->needs_plt = 1;
5ca5bb35 2448 h->non_got_ref = 1;
a5479e5f
L		 2449 if (h->plt.refcount <= 0)
2450 h->plt.refcount = 1;
2451 else
2452 h->plt.refcount += 1;
5ca5bb35
L		 2453 }
2454 }
2455
cbe950e9
L		 2456 if (h->plt.refcount <= 0)
2457 {
2458 h->plt.offset = (bfd_vma) -1;
2459 h->needs_plt = 0;
2460 }
2461 return TRUE;
2462 }
2463
252b5132
RH		 2464 /* If this is a function, put it in the procedure linkage table. We
2465 will fill in the contents of the procedure linkage table later,
2466 when we know the address of the .got section. */
2467 if (h->type == STT_FUNC
f5385ebf 2468 || h->needs_plt)
252b5132 2469 {
6725bdbf 2470 if (h->plt.refcount <= 0
9c7a29a3
AM		 2471 || SYMBOL_CALLS_LOCAL (info, h)
2472 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2473 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2474 {
2475 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2476 file, but the symbol was never referred to by a dynamic
2477 object, or if all references were garbage collected. In
2478 such a case, we don't actually need to build a procedure
2479 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2480 h->plt.offset = (bfd_vma) -1;
f5385ebf 2481 h->needs_plt = 0;
252b5132
RH		 2482 }
2483
b34976b6 2484 return TRUE;
252b5132 2485 }
6725bdbf
AM		 2486 else
2487 /* It's possible that we incorrectly decided a .plt reloc was
2488 needed for an R_386_PC32 reloc to a non-function sym in
2489 check_relocs. We can't decide accurately between function and
2490 non-function syms in check-relocs; Objects loaded later in
2491 the link may change h->type. So fix it now. */
bbd7ec4a 2492 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2493
2494 /* If this is a weak symbol, and there is a real definition, the
2495 processor independent code will have arranged for us to see the
2496 real definition first, and we can just use the same value. */
f6e332e6 2497 if (h->u.weakdef != NULL)
252b5132 2498 {
f6e332e6
AM		 2499 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2500 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2501 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2502 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2503 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2504 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2505 return TRUE;
252b5132
RH		 2506 }
2507
2508 /* This is a reference to a symbol defined by a dynamic object which
2509 is not a function. */
2510
2511 /* If we are creating a shared library, we must presume that the
2512 only references to the symbol are via the global offset table.
2513 For such cases we need not do anything here; the relocations will
2514 be handled correctly by relocate_section. */
0e1862bb 2515 if (!bfd_link_executable (info))
b34976b6 2516 return TRUE;
252b5132 2517
7843f00e 2518 /* If there are no references to this symbol that do not use the
d5597ebc
L		 2519 GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
2520 reloc. */
2521 eh = (struct elf_i386_link_hash_entry *) h;
2522 if (!h->non_got_ref && !eh->gotoff_ref)
b34976b6 2523 return TRUE;
7843f00e 2524
8bd621d8
AM		 2525 /* If -z nocopyreloc was given, we won't generate them either. */
2526 if (info->nocopyreloc)
2527 {
f5385ebf 2528 h->non_got_ref = 0;
b34976b6 2529 return TRUE;
8bd621d8
AM		 2530 }
2531
643796e3 2532 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2533 if (htab == NULL)
2534 return FALSE;
643796e3 2535
d5597ebc
L		 2536 /* If there aren't any dynamic relocs in read-only sections nor
2537 R_386_GOTOFF relocation, then we can keep the dynamic relocs and
2538 avoid the copy reloc. This doesn't work on VxWorks, where we can
2539 not have dynamic relocations (other than copy and jump slot
2540 relocations) in an executable. */
23209a78 2541 if (ELIMINATE_COPY_RELOCS
d5597ebc 2542 && !eh->gotoff_ref
23209a78 2543 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2544 {
a23b6845
AM		 2545 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2546 {
2547 s = p->sec->output_section;
2548 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2549 break;
2550 }
2551
a23b6845
AM		 2552 if (p == NULL)
2553 {
f5385ebf 2554 h->non_got_ref = 0;
a23b6845
AM		 2555 return TRUE;
2556 }
ebe50bae
AM		 2557 }
2558
252b5132
RH		 2559 /* We must allocate the symbol in our .dynbss section, which will
2560 become part of the .bss section of the executable. There will be
2561 an entry for this symbol in the .dynsym section. The dynamic
2562 object will contain position independent code, so all references
2563 from the dynamic object to this symbol will go through the global
2564 offset table. The dynamic linker will use the .dynsym entry to
2565 determine the address it must put in the global offset table, so
2566 both the dynamic object and the regular object will refer to the
2567 same memory location for the variable. */
2568
252b5132
RH		 2569 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2570 copy the initial value out of the dynamic object and into the
0ac8d2ca 2571 runtime process image. */
1d7e9d18 2572 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2573 {
eea6121a 2574 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2575 h->needs_copy = 1;
252b5132
RH		 2576 }
2577
0ac8d2ca 2578 s = htab->sdynbss;
252b5132 2579
6cabe1ea 2580 return _bfd_elf_adjust_dynamic_copy (info, h, s);
252b5132
RH		 2581}
2582
6725bdbf 2583/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2584 dynamic relocs. */
6725bdbf 2585
b34976b6 2586static bfd_boolean
eb4ff4d6 2587elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2588{
2589 struct bfd_link_info *info;
2590 struct elf_i386_link_hash_table *htab;
5a15f56f 2591 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2592 struct elf_dyn_relocs *p;
25e762b9 2593 unsigned plt_entry_size;
aec6b87e 2594 bfd_boolean resolved_to_zero;
6725bdbf 2595
e92d460e 2596 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2597 return TRUE;
6725bdbf 2598
cbe950e9 2599 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2600
6725bdbf
AM		 2601 info = (struct bfd_link_info *) inf;
2602 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2603 if (htab == NULL)
2604 return FALSE;
6725bdbf 2605
25e762b9
RM		 2606 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2607
e62b9723
L		 2608 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
2609 eh->has_got_reloc,
2610 eh);
aec6b87e 2611
04ebc307
L		 2612 /* Clear the reference count of function pointer relocations if
2613 symbol isn't a normal function. */
2614 if (h->type != STT_FUNC)
2615 eh->func_pointer_refcount = 0;
2616
dd7e64d4
L		 2617 /* We can't use the GOT PLT if pointer equality is needed since
2618 finish_dynamic_symbol won't clear symbol value and the dynamic
2619 linker won't update the GOT slot. We will get into an infinite
2620 loop at run-time. */
2621 if (htab->plt_got != NULL
2622 && h->type != STT_GNU_IFUNC
2623 && !h->pointer_equality_needed
2624 && h->plt.refcount > 0
2625 && h->got.refcount > 0)
2626 {
2627 /* Don't use the regular PLT if there are both GOT and GOTPLT
2628 reloctions. */
2629 h->plt.offset = (bfd_vma) -1;
2630
2631 /* Use the GOT PLT. */
2632 eh->plt_got.refcount = 1;
2633 }
2634
cbe950e9
L		 2635 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2636 here if it is defined and referenced in a non-shared object. */
2637 if (h->type == STT_GNU_IFUNC
2638 && h->def_regular)
25e762b9 2639 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
2df3368d
L		 2640 &htab->readonly_dynrelocs_against_ifunc,
2641 plt_entry_size,
7b70956d 2642 plt_entry_size, 4);
04ebc307
L		 2643 /* Don't create the PLT entry if there are only function pointer
2644 relocations which can be resolved at run-time. */
cbe950e9 2645 else if (htab->elf.dynamic_sections_created
04ebc307
L		 2646 && (h->plt.refcount > eh->func_pointer_refcount
2647 || eh->plt_got.refcount > 0))
6725bdbf 2648 {
25070364
L		 2649 bfd_boolean use_plt_got;
2650
04ebc307
L		 2651 /* Clear the reference count of function pointer relocations
2652 if PLT is used. */
2653 eh->func_pointer_refcount = 0;
2654
8ded2ddc 2655 if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
25070364
L		 2656 {
2657 /* Don't use the regular PLT for DF_BIND_NOW. */
2658 h->plt.offset = (bfd_vma) -1;
2659
2660 /* Use the GOT PLT. */
2661 h->got.refcount = 1;
2662 eh->plt_got.refcount = 1;
2663 }
2664
2665 use_plt_got = eh->plt_got.refcount > 0;
dd7e64d4 2666
5a15f56f
AM		 2667 /* Make sure this symbol is output as a dynamic symbol.
2668 Undefined weak syms won't yet be marked as dynamic. */
2669 if (h->dynindx == -1
aec6b87e
L		 2670 && !h->forced_local
2671 && !resolved_to_zero)
5a15f56f 2672 {
c152c796 2673 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2674 return FALSE;
5a15f56f
AM		 2675 }
2676
0e1862bb 2677 if (bfd_link_pic (info)
4e795f50 2678 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2679 {
6de2ae4a 2680 asection *s = htab->elf.splt;
dd7e64d4 2681 asection *got_s = htab->plt_got;
6725bdbf 2682
7c1e8d3e
L		 2683 /* If this is the first .plt entry, make room for the special
2684 first entry. The .plt section is used by prelink to undo
2685 prelinking for dynamic relocations. */
2686 if (s->size == 0)
2687 s->size = plt_entry_size;
2688
dd7e64d4
L		 2689 if (use_plt_got)
2690 eh->plt_got.offset = got_s->size;
2691 else
7c1e8d3e 2692 h->plt.offset = s->size;
6725bdbf 2693
ced53ee5
AM		 2694 /* If this symbol is not defined in a regular file, and we are
2695 not generating a shared library, then set the symbol to this
2696 location in the .plt. This is required to make function
2697 pointers compare as equal between the normal executable and
2698 the shared library. */
0e1862bb 2699 if (! bfd_link_pic (info)
f5385ebf 2700 && !h->def_regular)
ced53ee5 2701 {
dd7e64d4
L		 2702 if (use_plt_got)
2703 {
2704 /* We need to make a call to the entry of the GOT PLT
2705 instead of regular PLT entry. */
2706 h->root.u.def.section = got_s;
2707 h->root.u.def.value = eh->plt_got.offset;
2708 }
2709 else
2710 {
2711 h->root.u.def.section = s;
2712 h->root.u.def.value = h->plt.offset;
2713 }
ced53ee5 2714 }
6725bdbf 2715
ced53ee5 2716 /* Make room for this entry. */
dd7e64d4
L		 2717 if (use_plt_got)
2718 got_s->size += sizeof (elf_i386_got_plt_entry);
2719 else
2720 {
2721 s->size += plt_entry_size;
6725bdbf 2722
dd7e64d4
L		 2723 /* We also need to make an entry in the .got.plt section,
2724 which will be placed in the .got section by the linker
2725 script. */
2726 htab->elf.sgotplt->size += 4;
6725bdbf 2727
aec6b87e
L		 2728 /* There should be no PLT relocation against resolved
2729 undefined weak symbol in executable. */
2730 if (!resolved_to_zero)
2731 {
2732 /* We also need to make an entry in the .rel.plt
2733 section. */
2734 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2735 htab->elf.srelplt->reloc_count++;
2736 }
dd7e64d4 2737 }
eac338cf 2738
23209a78 2739 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
0e1862bb 2740 && !bfd_link_pic (info))
eac338cf
PB		 2741 {
2742 /* VxWorks has a second set of relocations for each PLT entry
2743 in executables. They go in a separate relocation section,
2744 which is processed by the kernel loader. */
2745
2746 /* There are two relocations for the initial PLT entry: an
2747 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2748 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2749
25e762b9 2750 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2751 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2752
2753 /* There are two extra relocations for each subsequent PLT entry:
2754 an R_386_32 relocation for the GOT entry, and an R_386_32
2755 relocation for the PLT entry. */
2756
2757 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2758 }
6725bdbf 2759 }
ced53ee5
AM		 2760 else
2761 {
13f42277 2762 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2763 h->plt.offset = (bfd_vma) -1;
f5385ebf 2764 h->needs_plt = 0;
ced53ee5 2765 }
6725bdbf
AM		 2766 }
2767 else
2768 {
13f42277 2769 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2770 h->plt.offset = (bfd_vma) -1;
f5385ebf 2771 h->needs_plt = 0;
6725bdbf
AM		 2772 }
2773
67a4f2b7
AO		 2774 eh->tlsdesc_got = (bfd_vma) -1;
2775
37e55690 2776 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2777 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2778 if (h->got.refcount > 0
0e1862bb 2779 && bfd_link_executable (info)
13ae64f3 2780 && h->dynindx == -1
37e55690 2781 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2782 h->got.offset = (bfd_vma) -1;
13ae64f3 2783 else if (h->got.refcount > 0)
6725bdbf 2784 {
0ac8d2ca 2785 asection *s;
b34976b6 2786 bfd_boolean dyn;
13ae64f3 2787 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2788
5a15f56f
AM		 2789 /* Make sure this symbol is output as a dynamic symbol.
2790 Undefined weak syms won't yet be marked as dynamic. */
2791 if (h->dynindx == -1
aec6b87e
L		 2792 && !h->forced_local
2793 && !resolved_to_zero)
5a15f56f 2794 {
c152c796 2795 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2796 return FALSE;
5a15f56f
AM		 2797 }
2798
6de2ae4a 2799 s = htab->elf.sgot;
67a4f2b7
AO		 2800 if (GOT_TLS_GDESC_P (tls_type))
2801 {
6de2ae4a 2802 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2803 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2804 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2805 h->got.offset = (bfd_vma) -2;
2806 }
2807 if (! GOT_TLS_GDESC_P (tls_type)
2808 || GOT_TLS_GD_P (tls_type))
2809 {
2810 h->got.offset = s->size;
2811 s->size += 4;
2812 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2813 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2814 s->size += 4;
2815 }
ebe50bae 2816 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2817 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2818 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2819 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2820 need two), R_386_TLS_GD needs one if local symbol and two if
aec6b87e
L		 2821 global. No dynamic relocation against resolved undefined weak
2822 symbol in executable. */
37e55690 2823 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2824 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2825 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2826 || (tls_type & GOT_TLS_IE))
6de2ae4a 2827 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2828 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2829 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2830 else if (! GOT_TLS_GDESC_P (tls_type)
aec6b87e
L		 2831 && ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2832 && !resolved_to_zero)
67a4f2b7 2833 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 2834 && (bfd_link_pic (info)
ef5aade5 2835 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2836 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2837 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2838 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2839 }
2840 else
51b64d56 2841 h->got.offset = (bfd_vma) -1;
6725bdbf 2842
5a15f56f 2843 if (eh->dyn_relocs == NULL)
b34976b6 2844 return TRUE;
5a15f56f 2845
0c715baa
AM		 2846 /* In the shared -Bsymbolic case, discard space allocated for
2847 dynamic pc-relative relocs against symbols which turn out to be
2848 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2849 space for pc-relative relocs that have become local due to symbol
2850 visibility changes. */
0c715baa 2851
0e1862bb 2852 if (bfd_link_pic (info))
5a15f56f 2853 {
09695f56
AM		 2854 /* The only reloc that uses pc_count is R_386_PC32, which will
2855 appear on a call or on something like ".long foo - .". We
2856 want calls to protected symbols to resolve directly to the
2857 function rather than going via the plt. If people want
2858 function pointer comparisons to work as expected then they
2859 should avoid writing assembly like ".long foo - .". */
2860 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2861 {
e03a8ed8 2862 struct elf_dyn_relocs **pp;
0c715baa
AM		 2863
2864 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2865 {
c3ce498c
L		 2866 p->count -= p->pc_count;
2867 p->pc_count = 0;
0c715baa
AM		 2868 if (p->count == 0)
2869 *pp = p->next;
2870 else
2871 pp = &p->next;
2872 }
5a15f56f 2873 }
4e795f50 2874
23209a78 2875 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2876 {
e03a8ed8 2877 struct elf_dyn_relocs **pp;
3348747a
NS		 2878 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2879 {
2880 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2881 *pp = p->next;
2882 else
2883 pp = &p->next;
2884 }
2885 }
2886
4e795f50 2887 /* Also discard relocs on undefined weak syms with non-default
aec6b87e 2888 visibility or in PIE. */
22d606e9 2889 if (eh->dyn_relocs != NULL
c353e543 2890 && h->root.type == bfd_link_hash_undefweak)
22d606e9 2891 {
aec6b87e
L		 2892 /* Undefined weak symbol is never bound locally in shared
2893 library. */
2894 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2895 || resolved_to_zero)
2896 {
2897 if (h->non_got_ref)
2898 {
2899 /* Keep dynamic non-GOT/non-PLT relocation so that we
2900 can branch to 0 without PLT. */
2901 struct elf_dyn_relocs **pp;
2902
2903 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2904 if (p->pc_count == 0)
2905 *pp = p->next;
2906 else
2907 {
2908 /* Remove non-R_386_PC32 relocation. */
2909 p->count = p->pc_count;
2910 pp = &p->next;
2911 }
22d606e9 2912
aec6b87e
L		 2913 if (eh->dyn_relocs != NULL)
2914 {
2915 /* Make sure undefined weak symbols are output
2916 as dynamic symbols in PIEs for dynamic non-GOT
2917 non-PLT reloations. */
2918 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2919 return FALSE;
2920 }
2921 }
2922 else
2923 eh->dyn_relocs = NULL;
2924 }
22d606e9
AM		 2925 else if (h->dynindx == -1
2926 && !h->forced_local)
2927 {
2928 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2929 return FALSE;
2930 }
2931 }
0c715baa 2932 }
a23b6845 2933 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2934 {
2935 /* For the non-shared case, discard space for relocs against
2936 symbols which turn out to need copy relocs or are not
04ebc307
L		 2937 dynamic. Keep dynamic relocations for run-time function
2938 pointer initialization. */
0c715baa 2939
aec6b87e
L		 2940 if ((!h->non_got_ref
2941 || eh->func_pointer_refcount > 0
2942 || (h->root.type == bfd_link_hash_undefweak
2943 && !resolved_to_zero))
f5385ebf
AM		 2944 && ((h->def_dynamic
2945 && !h->def_regular)
ebe50bae 2946 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2947 && (h->root.type == bfd_link_hash_undefweak
2948 || h->root.type == bfd_link_hash_undefined))))
2949 {
2950 /* Make sure this symbol is output as a dynamic symbol.
2951 Undefined weak syms won't yet be marked as dynamic. */
2952 if (h->dynindx == -1
aec6b87e
L		 2953 && !h->forced_local
2954 && !resolved_to_zero)
0c715baa 2955 {
c152c796 2956 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2957 return FALSE;
0c715baa 2958 }
5a15f56f 2959
0c715baa
AM		 2960 /* If that succeeded, we know we'll be keeping all the
2961 relocs. */
2962 if (h->dynindx != -1)
2963 goto keep;
2964 }
2965
2966 eh->dyn_relocs = NULL;
04ebc307 2967 eh->func_pointer_refcount = 0;
0c715baa 2968
ec338859 2969 keep: ;
5a15f56f
AM		 2970 }
2971
0c715baa
AM		 2972 /* Finally, allocate space. */
2973 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2974 {
e7c33416
NC		 2975 asection *sreloc;
2976
cbe950e9 2977 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2978
2979 BFD_ASSERT (sreloc != NULL);
eea6121a 2980 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2981 }
2982
b34976b6 2983 return TRUE;
6725bdbf
AM		 2984}
2985
c25bc9fc
L		 2986/* Allocate space in .plt, .got and associated reloc sections for
2987 local dynamic relocs. */
2988
2989static bfd_boolean
2990elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2991{
2992 struct elf_link_hash_entry *h
2993 = (struct elf_link_hash_entry *) *slot;
2994
2995 if (h->type != STT_GNU_IFUNC
2996 || !h->def_regular
2997 || !h->ref_regular
2998 || !h->forced_local
2999 || h->root.type != bfd_link_hash_defined)
3000 abort ();
3001
3002 return elf_i386_allocate_dynrelocs (h, inf);
3003}
3004
0c715baa
AM		 3005/* Find any dynamic relocs that apply to read-only sections. */
3006
b34976b6 3007static bfd_boolean
eb4ff4d6 3008elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 3009{
3010 struct elf_i386_link_hash_entry *eh;
e03a8ed8 3011 struct elf_dyn_relocs *p;
0c715baa 3012
aa715242
L		 3013 /* Skip local IFUNC symbols. */
3014 if (h->forced_local && h->type == STT_GNU_IFUNC)
3015 return TRUE;
3016
0c715baa
AM		 3017 eh = (struct elf_i386_link_hash_entry *) h;
3018 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3019 {
3020 asection *s = p->sec->output_section;
3021
3022 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3023 {
3024 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3025
3026 info->flags |= DF_TEXTREL;
3027
0e1862bb 3028 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 3029 || info->error_textrel)
3030 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L		 3031 p->sec->owner, h->root.root.string,
3032 p->sec);
3033
0c715baa 3034 /* Not an error, just cut short the traversal. */
b34976b6 3035 return FALSE;
0c715baa
AM		 3036 }
3037 }
b34976b6 3038 return TRUE;
0c715baa
AM		 3039}
3040
c175a657 3041/* Convert load via the GOT slot to load immediate. */
daa67607
L		 3042
3043static bfd_boolean
02a86693 3044elf_i386_convert_load (bfd *abfd, asection *sec,
a6af384b 3045 struct bfd_link_info *link_info)
daa67607 3046{
c175a657 3047 struct elf_i386_link_hash_table *htab;
daa67607
L		 3048 Elf_Internal_Shdr *symtab_hdr;
3049 Elf_Internal_Rela *internal_relocs;
3050 Elf_Internal_Rela *irel, *irelend;
3051 bfd_byte *contents;
c175a657 3052 bfd_boolean changed;
daa67607
L		 3053 bfd_signed_vma *local_got_refcounts;
3054
3055 /* Don't even try to convert non-ELF outputs. */
3056 if (!is_elf_hash_table (link_info->hash))
3057 return FALSE;
3058
c1d11331 3059 /* Nothing to do if there is no need or no output. */
daa67607 3060 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
02a86693 3061 || sec->need_convert_load == 0
c8831961 3062 || bfd_is_abs_section (sec->output_section))
daa67607
L		 3063 return TRUE;
3064
3065 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3066
3067 /* Load the relocations for this section. */
3068 internal_relocs = (_bfd_elf_link_read_relocs
3069 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
3070 link_info->keep_memory));
3071 if (internal_relocs == NULL)
3072 return FALSE;
3073
c175a657 3074 changed = FALSE;
daa67607 3075 htab = elf_i386_hash_table (link_info);
daa67607
L		 3076 local_got_refcounts = elf_local_got_refcounts (abfd);
3077
3078 /* Get the section contents. */
3079 if (elf_section_data (sec)->this_hdr.contents != NULL)
3080 contents = elf_section_data (sec)->this_hdr.contents;
3081 else
3082 {
3083 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
3084 goto error_return;
3085 }
3086
3087 irelend = internal_relocs + sec->reloc_count;
3088 for (irel = internal_relocs; irel < irelend; irel++)
3089 {
3090 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
c175a657 3091 unsigned int r_symndx;
daa67607 3092 struct elf_link_hash_entry *h;
c175a657 3093 bfd_boolean converted;
daa67607 3094
7d4d9709
L		 3095 /* Don't convert R_386_GOT32 since we can't tell if it is applied
3096 to "mov $foo@GOT, %reg" which isn't a load via GOT. */
3097 if (r_type != R_386_GOT32X)
daa67607
L		 3098 continue;
3099
c175a657 3100 r_symndx = ELF32_R_SYM (irel->r_info);
02a86693 3101 if (r_symndx < symtab_hdr->sh_info)
c175a657
L		 3102 h = elf_i386_get_local_sym_hash (htab, sec->owner,
3103 (const Elf_Internal_Rela *) irel,
3104 FALSE);
3105 else
02a86693 3106 {
c175a657
L		 3107 h = elf_sym_hashes (abfd)[r_symndx - symtab_hdr->sh_info];
3108 while (h->root.type == bfd_link_hash_indirect
3109 || h->root.type == bfd_link_hash_warning)
3110 h = (struct elf_link_hash_entry *) h->root.u.i.link;
daa67607
L		 3111 }
3112
02a86693 3113 /* STT_GNU_IFUNC must keep GOT32 relocations. */
c175a657 3114 if (h != NULL && h->type == STT_GNU_IFUNC)
02a86693
L		 3115 continue;
3116
c175a657
L		 3117 converted = FALSE;
3118 if (!elf_i386_convert_load_reloc (abfd, symtab_hdr, contents,
3119 irel, h, &converted, link_info))
3120 goto error_return;
bae420ef 3121
c175a657 3122 if (converted)
02a86693 3123 {
c175a657
L		 3124 changed = converted;
3125 if (h)
02a86693 3126 {
c175a657
L		 3127 if (h->got.refcount > 0)
3128 h->got.refcount -= 1;
02a86693 3129 }
c175a657 3130 else
02a86693 3131 {
c175a657
L		 3132 if (local_got_refcounts != NULL
3133 && local_got_refcounts[r_symndx] > 0)
3134 local_got_refcounts[r_symndx] -= 1;
02a86693 3135 }
daa67607
L		 3136 }
3137 }
3138
3139 if (contents != NULL
3140 && elf_section_data (sec)->this_hdr.contents != contents)
3141 {
c175a657 3142 if (!changed && !link_info->keep_memory)
daa67607
L		 3143 free (contents);
3144 else
3145 {
3146 /* Cache the section contents for elf_link_input_bfd. */
3147 elf_section_data (sec)->this_hdr.contents = contents;
3148 }
3149 }
3150
3151 if (elf_section_data (sec)->relocs != internal_relocs)
3152 {
c175a657 3153 if (!changed)
daa67607
L		 3154 free (internal_relocs);
3155 else
3156 elf_section_data (sec)->relocs = internal_relocs;
3157 }
3158
3159 return TRUE;
3160
3161 error_return:
3162 if (contents != NULL
3163 && elf_section_data (sec)->this_hdr.contents != contents)
3164 free (contents);
3165 if (internal_relocs != NULL
3166 && elf_section_data (sec)->relocs != internal_relocs)
3167 free (internal_relocs);
3168 return FALSE;
3169}
3170
252b5132
RH		 3171/* Set the sizes of the dynamic sections. */
3172
b34976b6 3173static bfd_boolean
23209a78 3174elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 3175{
6725bdbf 3176 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3177 bfd *dynobj;
3178 asection *s;
b34976b6 3179 bfd_boolean relocs;
0c715baa 3180 bfd *ibfd;
252b5132 3181
6725bdbf 3182 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3183 if (htab == NULL)
3184 return FALSE;
ebe50bae 3185 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 3186 if (dynobj == NULL)
3187 abort ();
252b5132 3188
0c715baa
AM		 3189 /* Set up .got offsets for local syms, and space for local dynamic
3190 relocs. */
c72f2fb2 3191 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
161d71a6
L		 3192 {
3193 bfd_signed_vma *local_got;
3194 bfd_signed_vma *end_local_got;
13ae64f3 3195 char *local_tls_type;
67a4f2b7 3196 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 3197 bfd_size_type locsymcount;
3198 Elf_Internal_Shdr *symtab_hdr;
3199 asection *srel;
6725bdbf 3200
0ffa91dd 3201 if (! is_i386_elf (ibfd))
161d71a6 3202 continue;
6725bdbf 3203
0c715baa
AM		 3204 for (s = ibfd->sections; s != NULL; s = s->next)
3205 {
e03a8ed8 3206 struct elf_dyn_relocs *p;
0c715baa 3207
02a86693 3208 if (!elf_i386_convert_load (ibfd, s, info))
daa67607
L		 3209 return FALSE;
3210
e03a8ed8 3211 for (p = ((struct elf_dyn_relocs *)
e81d3500 3212 elf_section_data (s)->local_dynrel);
ec338859
AM		 3213 p != NULL;
3214 p = p->next)
0c715baa 3215 {
ec338859
AM		 3216 if (!bfd_is_abs_section (p->sec)
3217 && bfd_is_abs_section (p->sec->output_section))
3218 {
3219 /* Input section has been discarded, either because
3220 it is a copy of a linkonce section or due to
3221 linker script /DISCARD/, so we'll be discarding
3222 the relocs too. */
3223 }
23209a78 3224 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 3225 && strcmp (p->sec->output_section->name,
3226 ".tls_vars") == 0)
3227 {
3228 /* Relocations in vxworks .tls_vars sections are
3229 handled specially by the loader. */
3230 }
248866a8 3231 else if (p->count != 0)
ec338859
AM		 3232 {
3233 srel = elf_section_data (p->sec)->sreloc;
eea6121a 3234 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 3235 if ((p->sec->output_section->flags & SEC_READONLY) != 0
3236 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 3237 {
3238 info->flags |= DF_TEXTREL;
0e1862bb 3239 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 3240 || info->error_textrel)
3241 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 3242 p->sec->owner, p->sec);
b70321a2 3243 }
ec338859 3244 }
0c715baa
AM		 3245 }
3246 }
3247
3248 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 3249 if (!local_got)
3250 continue;
6725bdbf 3251
0ffa91dd 3252 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 3253 locsymcount = symtab_hdr->sh_info;
3254 end_local_got = local_got + locsymcount;
13ae64f3 3255 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 3256 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 3257 s = htab->elf.sgot;
3258 srel = htab->elf.srelgot;
67a4f2b7
AO		 3259 for (; local_got < end_local_got;
3260 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 3261 {
67a4f2b7 3262 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 3263 if (*local_got > 0)
6725bdbf 3264 {
67a4f2b7
AO		 3265 if (GOT_TLS_GDESC_P (*local_tls_type))
3266 {
6de2ae4a 3267 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 3268 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 3269 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 3270 *local_got = (bfd_vma) -2;
3271 }
3272 if (! GOT_TLS_GDESC_P (*local_tls_type)
3273 || GOT_TLS_GD_P (*local_tls_type))
3274 {
3275 *local_got = s->size;
3276 s->size += 4;
3277 if (GOT_TLS_GD_P (*local_tls_type)
3278 || *local_tls_type == GOT_TLS_IE_BOTH)
3279 s->size += 4;
3280 }
0e1862bb 3281 if (bfd_link_pic (info)
67a4f2b7 3282 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 3283 || (*local_tls_type & GOT_TLS_IE))
3284 {
3285 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 3286 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 3287 else if (GOT_TLS_GD_P (*local_tls_type)
3288 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 3289 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 3290 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 3291 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 3292 }
6725bdbf 3293 }
161d71a6
L		 3294 else
3295 *local_got = (bfd_vma) -1;
6725bdbf 3296 }
252b5132 3297 }
6725bdbf 3298
13ae64f3
JJ		 3299 if (htab->tls_ldm_got.refcount > 0)
3300 {
3301 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
3302 relocs. */
6de2ae4a
L		 3303 htab->tls_ldm_got.offset = htab->elf.sgot->size;
3304 htab->elf.sgot->size += 8;
3305 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 3306 }
3307 else
3308 htab->tls_ldm_got.offset = -1;
3309
0c715baa
AM		 3310 /* Allocate global sym .plt and .got entries, and space for global
3311 sym dynamic relocs. */
eb4ff4d6 3312 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 3313
c25bc9fc
L		 3314 /* Allocate .plt and .got entries, and space for local symbols. */
3315 htab_traverse (htab->loc_hash_table,
3316 elf_i386_allocate_local_dynrelocs,
3317 info);
3318
67a4f2b7
AO		 3319 /* For every jump slot reserved in the sgotplt, reloc_count is
3320 incremented. However, when we reserve space for TLS descriptors,
3321 it's not incremented, so in order to compute the space reserved
3322 for them, it suffices to multiply the reloc count by the jump
e1f98742 3323 slot size.
caa0075c 3324
e1f98742
L		 3325 PR ld/13302: We start next_irelative_index at the end of .rela.plt
3326 so that R_386_IRELATIVE entries come last. */
6de2ae4a 3327 if (htab->elf.srelplt)
e1f98742
L		 3328 {
3329 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
3330 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
3331 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
3332 }
3333 else if (htab->elf.irelplt)
3334 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
3335
67a4f2b7 3336
a7b16ceb
L		 3337 if (htab->elf.sgotplt)
3338 {
3339 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 3340 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 3341 if ((htab->elf.hgot == NULL
3342 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 3343 && (htab->elf.sgotplt->size
3344 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 3345 && (htab->elf.splt == NULL
3346 || htab->elf.splt->size == 0)
3347 && (htab->elf.sgot == NULL
3348 || htab->elf.sgot->size == 0)
3349 && (htab->elf.iplt == NULL
3350 || htab->elf.iplt->size == 0)
3351 && (htab->elf.igotplt == NULL
3352 || htab->elf.igotplt->size == 0))
3353 htab->elf.sgotplt->size = 0;
3354 }
3355
9a2a56cc
AM		 3356
3357 if (htab->plt_eh_frame != NULL
3358 && htab->elf.splt != NULL
3359 && htab->elf.splt->size != 0
3360 && !bfd_is_abs_section (htab->elf.splt->output_section)
3361 && _bfd_elf_eh_frame_present (info))
3362 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
3363
5a15f56f
AM		 3364 /* We now have determined the sizes of the various dynamic sections.
3365 Allocate memory for them. */
b34976b6 3366 relocs = FALSE;
252b5132
RH		 3367 for (s = dynobj->sections; s != NULL; s = s->next)
3368 {
eac338cf
PB		 3369 bfd_boolean strip_section = TRUE;
3370
252b5132
RH		 3371 if ((s->flags & SEC_LINKER_CREATED) == 0)
3372 continue;
3373
6de2ae4a 3374 if (s == htab->elf.splt
9a2a56cc 3375 || s == htab->elf.sgot)
252b5132 3376 {
6725bdbf
AM		 3377 /* Strip this section if we don't need it; see the
3378 comment below. */
eac338cf
PB		 3379 /* We'd like to strip these sections if they aren't needed, but if
3380 we've exported dynamic symbols from them we must leave them.
3381 It's too late to tell BFD to get rid of the symbols. */
3382
7325306f 3383 if (htab->elf.hplt != NULL)
eac338cf 3384 strip_section = FALSE;
252b5132 3385 }
9a2a56cc
AM		 3386 else if (s == htab->elf.sgotplt
3387 || s == htab->elf.iplt
3388 || s == htab->elf.igotplt
dd7e64d4 3389 || s == htab->plt_got
9a2a56cc
AM		 3390 || s == htab->plt_eh_frame
3391 || s == htab->sdynbss)
3392 {
3393 /* Strip these too. */
3394 }
0112cd26 3395 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 3396 {
6de2ae4a
L		 3397 if (s->size != 0
3398 && s != htab->elf.srelplt
3399 && s != htab->srelplt2)
b34976b6 3400 relocs = TRUE;
252b5132 3401
0ac8d2ca
AM		 3402 /* We use the reloc_count field as a counter if we need
3403 to copy relocs into the output file. */
5ae0bfb6 3404 s->reloc_count = 0;
252b5132 3405 }
6725bdbf 3406 else
252b5132
RH		 3407 {
3408 /* It's not one of our sections, so don't allocate space. */
3409 continue;
3410 }
3411
c456f082 3412 if (s->size == 0)
252b5132 3413 {
0ac8d2ca
AM		 3414 /* If we don't need this section, strip it from the
3415 output file. This is mostly to handle .rel.bss and
3416 .rel.plt. We must create both sections in
3417 create_dynamic_sections, because they must be created
3418 before the linker maps input sections to output
3419 sections. The linker does that before
3420 adjust_dynamic_symbol is called, and it is that
3421 function which decides whether anything needs to go
3422 into these sections. */
c456f082
AM		 3423 if (strip_section)
3424 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3425 continue;
3426 }
3427
c456f082
AM		 3428 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3429 continue;
3430
f69da49f
AM		 3431 /* Allocate memory for the section contents. We use bfd_zalloc
3432 here in case unused entries are not reclaimed before the
3433 section's contents are written out. This should not happen,
3434 but this way if it does, we get a R_386_NONE reloc instead
3435 of garbage. */
a50b1753 3436 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 3437 if (s->contents == NULL)
b34976b6 3438 return FALSE;
252b5132
RH		 3439 }
3440
e41b3a13 3441 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3442 && htab->plt_eh_frame->contents != NULL)
3443 {
3444 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
3445 sizeof (elf_i386_eh_frame_plt));
3446 bfd_put_32 (dynobj, htab->elf.splt->size,
3447 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3448 }
e41b3a13 3449
ebe50bae 3450 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3451 {
3452 /* Add some entries to the .dynamic section. We fill in the
3453 values later, in elf_i386_finish_dynamic_sections, but we
3454 must add the entries now so that we get the correct size for
3455 the .dynamic section. The DT_DEBUG entry is filled in by the
3456 dynamic linker and used by the debugger. */
dc810e39 3457#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3458 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3459
0e1862bb 3460 if (bfd_link_executable (info))
252b5132 3461 {
dc810e39 3462 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3463 return FALSE;
252b5132
RH		 3464 }
3465
6de2ae4a 3466 if (htab->elf.splt->size != 0)
252b5132 3467 {
7c1e8d3e
L		 3468 /* DT_PLTGOT is used by prelink even if there is no PLT
3469 relocation. */
3470 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 3471 return FALSE;
7c1e8d3e
L		 3472
3473 if (htab->elf.srelplt->size != 0)
3474 {
3475 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3476 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3477 || !add_dynamic_entry (DT_JMPREL, 0))
3478 return FALSE;
3479 }
252b5132
RH		 3480 }
3481
3482 if (relocs)
3483 {
dc810e39
AM		 3484 if (!add_dynamic_entry (DT_REL, 0)
3485 || !add_dynamic_entry (DT_RELSZ, 0)
3486 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3487 return FALSE;
252b5132 3488
0c715baa
AM		 3489 /* If any dynamic relocs apply to a read-only section,
3490 then we need a DT_TEXTREL entry. */
248866a8 3491 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3492 elf_link_hash_traverse (&htab->elf,
3493 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3494
3495 if ((info->flags & DF_TEXTREL) != 0)
3496 {
2df3368d 3497 if (htab->readonly_dynrelocs_against_ifunc)
8efa2874
L		 3498 {
3499 info->callbacks->einfo
3500 (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
3501 bfd_set_error (bfd_error_bad_value);
3502 return FALSE;
3503 }
3504
0c715baa 3505 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3506 return FALSE;
0c715baa 3507 }
252b5132 3508 }
23209a78 3509 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3510 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3511 return FALSE;
252b5132 3512 }
dc810e39 3513#undef add_dynamic_entry
252b5132 3514
b34976b6 3515 return TRUE;
252b5132
RH		 3516}
3517
67a4f2b7
AO		 3518static bfd_boolean
3519elf_i386_always_size_sections (bfd *output_bfd,
3520 struct bfd_link_info *info)
3521{
3522 asection *tls_sec = elf_hash_table (info)->tls_sec;
3523
3524 if (tls_sec)
3525 {
3526 struct elf_link_hash_entry *tlsbase;
3527
3528 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3529 "_TLS_MODULE_BASE_",
3530 FALSE, FALSE, FALSE);
3531
3532 if (tlsbase && tlsbase->type == STT_TLS)
3533 {
4dfe6ac6 3534 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3535 struct bfd_link_hash_entry *bh = NULL;
3536 const struct elf_backend_data *bed
3537 = get_elf_backend_data (output_bfd);
3538
4dfe6ac6
NC		 3539 htab = elf_i386_hash_table (info);
3540 if (htab == NULL)
3541 return FALSE;
3542
67a4f2b7
AO		 3543 if (!(_bfd_generic_link_add_one_symbol
3544 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3545 tls_sec, 0, NULL, FALSE,
3546 bed->collect, &bh)))
3547 return FALSE;
9f03412a 3548
4dfe6ac6 3549 htab->tls_module_base = bh;
9f03412a 3550
67a4f2b7
AO		 3551 tlsbase = (struct elf_link_hash_entry *)bh;
3552 tlsbase->def_regular = 1;
3553 tlsbase->other = STV_HIDDEN;
576fa883 3554 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3555 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3556 }
3557 }
3558
3559 return TRUE;
3560}
3561
38701953
AM		 3562/* Set the correct type for an x86 ELF section. We do this by the
3563 section name, which is a hack, but ought to work. */
3564
b34976b6 3565static bfd_boolean
55fd94b0
AM		 3566elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3567 Elf_Internal_Shdr *hdr,
3568 asection *sec)
38701953 3569{
91d6fa6a 3570 const char *name;
38701953
AM		 3571
3572 name = bfd_get_section_name (abfd, sec);
3573
3574 /* This is an ugly, but unfortunately necessary hack that is
3575 needed when producing EFI binaries on x86. It tells
3576 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3577 containing ELF relocation info. We need this hack in order to
3578 be able to generate ELF binaries that can be translated into
3579 EFI applications (which are essentially COFF objects). Those
3580 files contain a COFF ".reloc" section inside an ELFNN object,
3581 which would normally cause BFD to segfault because it would
3582 attempt to interpret this section as containing relocation
3583 entries for section "oc". With this hack enabled, ".reloc"
3584 will be treated as a normal data section, which will avoid the
3585 segfault. However, you won't be able to create an ELFNN binary
3586 with a section named "oc" that needs relocations, but that's
3587 the kind of ugly side-effects you get when detecting section
3588 types based on their names... In practice, this limitation is
3589 unlikely to bite. */
3590 if (strcmp (name, ".reloc") == 0)
3591 hdr->sh_type = SHT_PROGBITS;
3592
b34976b6 3593 return TRUE;
38701953
AM		 3594}
3595
9f03412a
AO		 3596/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3597 executables. Rather than setting it to the beginning of the TLS
3598 section, we have to set it to the end. This function may be called
3599 multiple times, it is idempotent. */
3600
3601static void
eb4ff4d6 3602elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3603{
4dfe6ac6 3604 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3605 struct bfd_link_hash_entry *base;
3606
0e1862bb 3607 if (!bfd_link_executable (info))
9f03412a
AO		 3608 return;
3609
4dfe6ac6
NC		 3610 htab = elf_i386_hash_table (info);
3611 if (htab == NULL)
3612 return;
9f03412a 3613
4dfe6ac6
NC		 3614 base = htab->tls_module_base;
3615 if (base == NULL)
9f03412a
AO		 3616 return;
3617
4dfe6ac6 3618 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3619}
3620
13ae64f3
JJ		 3621/* Return the base VMA address which should be subtracted from real addresses
3622 when resolving @dtpoff relocation.
3623 This is PT_TLS segment p_vaddr. */
3624
3625static bfd_vma
eb4ff4d6 3626elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3627{
e1918d23
AM		 3628 /* If tls_sec is NULL, we should have signalled an error already. */
3629 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3630 return 0;
e1918d23 3631 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3632}
3633
3634/* Return the relocation value for @tpoff relocation
3635 if STT_TLS virtual address is ADDRESS. */
3636
3637static bfd_vma
eb4ff4d6 3638elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3639{
e1918d23 3640 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3641 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3642 bfd_vma static_tls_size;
13ae64f3 3643
e1918d23
AM		 3644 /* If tls_sec is NULL, we should have signalled an error already. */
3645 if (htab->tls_sec == NULL)
6a30718d 3646 return 0;
7dc98aea
RO		 3647
3648 /* Consider special static TLS alignment requirements. */
3649 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3650 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3651}
3652
252b5132
RH		 3653/* Relocate an i386 ELF section. */
3654
b34976b6 3655static bfd_boolean
55fd94b0
AM		 3656elf_i386_relocate_section (bfd *output_bfd,
3657 struct bfd_link_info *info,
3658 bfd *input_bfd,
3659 asection *input_section,
3660 bfd_byte *contents,
3661 Elf_Internal_Rela *relocs,
3662 Elf_Internal_Sym *local_syms,
3663 asection **local_sections)
252b5132 3664{
6725bdbf 3665 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3666 Elf_Internal_Shdr *symtab_hdr;
3667 struct elf_link_hash_entry **sym_hashes;
3668 bfd_vma *local_got_offsets;
67a4f2b7 3669 bfd_vma *local_tlsdesc_gotents;
252b5132 3670 Elf_Internal_Rela *rel;
60f2e42e 3671 Elf_Internal_Rela *wrel;
252b5132 3672 Elf_Internal_Rela *relend;
3348747a 3673 bfd_boolean is_vxworks_tls;
25e762b9 3674 unsigned plt_entry_size;
252b5132 3675
0ffa91dd 3676 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3677
c337a162
L		 3678 /* Skip if check_relocs failed. */
3679 if (input_section->check_relocs_failed)
3680 return FALSE;
3681
6725bdbf 3682 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3683 if (htab == NULL)
3684 return FALSE;
0ffa91dd 3685 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3686 sym_hashes = elf_sym_hashes (input_bfd);
3687 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3688 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3689 /* We have to handle relocations in vxworks .tls_vars sections
3690 specially, because the dynamic loader is 'weird'. */
23209a78 3691 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
0e1862bb 3692 && bfd_link_pic (info)
3348747a
NS		 3693 && !strcmp (input_section->output_section->name,
3694 ".tls_vars"));
252b5132 3695
eb4ff4d6 3696 elf_i386_set_tls_module_base (info);
9f03412a 3697
25e762b9
RM		 3698 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3699
60f2e42e 3700 rel = wrel = relocs;
252b5132 3701 relend = relocs + input_section->reloc_count;
60f2e42e 3702 for (; rel < relend; wrel++, rel++)
252b5132 3703 {
13ae64f3 3704 unsigned int r_type;
252b5132
RH		 3705 reloc_howto_type *howto;
3706 unsigned long r_symndx;
3707 struct elf_link_hash_entry *h;
dd7e64d4 3708 struct elf_i386_link_hash_entry *eh;
252b5132
RH		 3709 Elf_Internal_Sym *sym;
3710 asection *sec;
dd7e64d4 3711 bfd_vma off, offplt, plt_offset;
252b5132 3712 bfd_vma relocation;
b34976b6 3713 bfd_boolean unresolved_reloc;
252b5132 3714 bfd_reloc_status_type r;
1b452ec6 3715 unsigned int indx;
13ae64f3 3716 int tls_type;
1788fc08 3717 bfd_vma st_size;
dd7e64d4 3718 asection *resolved_plt;
aec6b87e 3719 bfd_boolean resolved_to_zero;
252b5132
RH		 3720
3721 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3722 if (r_type == R_386_GNU_VTINHERIT
3723 || r_type == R_386_GNU_VTENTRY)
18954b29
L		 3724 {
3725 if (wrel != rel)
3726 *wrel = *rel;
3727 continue;
3728 }
dc47f327 3729
55fd94b0 3730 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3731 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3732 >= R_386_ext - R_386_standard)
3733 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520 3734 >= R_386_ext2 - R_386_ext))
252b5132 3735 {
6ba842b6 3736 (*_bfd_error_handler)
d003868e
AM		 3737 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3738 input_bfd, input_section, r_type);
252b5132 3739 bfd_set_error (bfd_error_bad_value);
b34976b6 3740 return FALSE;
252b5132 3741 }
1b452ec6 3742 howto = elf_howto_table + indx;
252b5132
RH		 3743
3744 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3745 h = NULL;
3746 sym = NULL;
3747 sec = NULL;
b34976b6 3748 unresolved_reloc = FALSE;
252b5132
RH		 3749 if (r_symndx < symtab_hdr->sh_info)
3750 {
3751 sym = local_syms + r_symndx;
3752 sec = local_sections[r_symndx];
3753 relocation = (sec->output_section->vma
3754 + sec->output_offset
3755 + sym->st_value);
1788fc08 3756 st_size = sym->st_size;
ab96bf03
AM		 3757
3758 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3759 && ((sec->flags & SEC_MERGE) != 0
0e1862bb 3760 || (bfd_link_relocatable (info)
ab96bf03 3761 && sec->output_offset != 0)))
f8df10f4 3762 {
f8df10f4 3763 bfd_vma addend;
4a335f3d 3764 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3765
4a335f3d 3766 switch (howto->size)
f8df10f4 3767 {
4a335f3d
AM		 3768 case 0:
3769 addend = bfd_get_8 (input_bfd, where);
3770 if (howto->pc_relative)
3771 {
3772 addend = (addend ^ 0x80) - 0x80;
3773 addend += 1;
3774 }
3775 break;
3776 case 1:
3777 addend = bfd_get_16 (input_bfd, where);
3778 if (howto->pc_relative)
3779 {
3780 addend = (addend ^ 0x8000) - 0x8000;
3781 addend += 2;
3782 }
3783 break;
3784 case 2:
3785 addend = bfd_get_32 (input_bfd, where);
3786 if (howto->pc_relative)
3787 {
3788 addend = (addend ^ 0x80000000) - 0x80000000;
3789 addend += 4;
3790 }
3791 break;
3792 default:
3793 abort ();
f8df10f4
JJ		 3794 }
3795
0e1862bb 3796 if (bfd_link_relocatable (info))
ab96bf03
AM		 3797 addend += sec->output_offset;
3798 else
3799 {
3800 asection *msec = sec;
3801 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3802 addend);
3803 addend -= relocation;
3804 addend += msec->output_section->vma + msec->output_offset;
3805 }
4a335f3d
AM		 3806
3807 switch (howto->size)
3808 {
3809 case 0:
16a10388 3810 /* FIXME: overflow checks. */
4a335f3d
AM		 3811 if (howto->pc_relative)
3812 addend -= 1;
3813 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3814 break;
3815 case 1:
3816 if (howto->pc_relative)
3817 addend -= 2;
3818 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3819 break;
3820 case 2:
3821 if (howto->pc_relative)
3822 addend -= 4;
3823 bfd_put_32 (input_bfd, addend, where);
3824 break;
3825 }
f8df10f4 3826 }
0e1862bb 3827 else if (!bfd_link_relocatable (info)
1f85278f 3828 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3829 {
3830 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3831 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3832 FALSE);
c25bc9fc
L		 3833 if (h == NULL)
3834 abort ();
3835
23209a78 3836 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3837 h->root.u.def.value = sym->st_value;
3838 h->root.u.def.section = sec;
3839 }
252b5132
RH		 3840 }
3841 else
3842 {
3d540e93 3843 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3844 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3845
b2a8e766
AM		 3846 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3847 r_symndx, symtab_hdr, sym_hashes,
3848 h, sec, relocation,
62d887d4 3849 unresolved_reloc, warned, ignored);
1788fc08 3850 st_size = h->size;
252b5132
RH		 3851 }
3852
dbaa2011 3853 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 3854 {
3855 _bfd_clear_contents (howto, input_bfd, input_section,
3856 contents + rel->r_offset);
3857 wrel->r_offset = rel->r_offset;
3858 wrel->r_info = 0;
3859 wrel->r_addend = 0;
3860
3861 /* For ld -r, remove relocations in debug sections against
3862 sections defined in discarded sections. Not done for
3863 eh_frame editing code expects to be present. */
3864 if (bfd_link_relocatable (info)
3865 && (input_section->flags & SEC_DEBUGGING))
3866 wrel--;
3867
3868 continue;
3869 }
9635fe29 3870
0e1862bb 3871 if (bfd_link_relocatable (info))
2d5da473
L		 3872 {
3873 if (wrel != rel)
3874 *wrel = *rel;
3875 continue;
3876 }
ab96bf03 3877
cbe950e9
L		 3878 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3879 it here if it is defined in a non-shared object. */
3880 if (h != NULL
3881 && h->type == STT_GNU_IFUNC
3882 && h->def_regular)
3883 {
3884 asection *plt, *gotplt, *base_got;
3885 bfd_vma plt_index;
4c544807 3886 const char *name;
cbe950e9 3887
97dc35c8
L		 3888 if ((input_section->flags & SEC_ALLOC) == 0)
3889 {
3890 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3891 sections because such sections are not SEC_ALLOC and
3892 thus ld.so will not process them. */
3893 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 3894 continue;
97dc35c8
L		 3895 abort ();
3896 }
3897 else if (h->plt.offset == (bfd_vma) -1)
cbe950e9
L		 3898 abort ();
3899
3900 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3901 if (htab->elf.splt != NULL)
cbe950e9 3902 {
6de2ae4a
L		 3903 plt = htab->elf.splt;
3904 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3905 }
3906 else
3907 {
6de2ae4a
L		 3908 plt = htab->elf.iplt;
3909 gotplt = htab->elf.igotplt;
cbe950e9
L		 3910 }
3911
3912 relocation = (plt->output_section->vma
3913 + plt->output_offset + h->plt.offset);
3914
3915 switch (r_type)
3916 {
3917 default:
4c544807
L		 3918 if (h->root.root.string)
3919 name = h->root.root.string;
3920 else
3921 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3922 NULL);
cbe950e9
L		 3923 (*_bfd_error_handler)
3924 (_("%B: relocation %s against STT_GNU_IFUNC "
3925 "symbol `%s' isn't handled by %s"), input_bfd,
3926 elf_howto_table[r_type].name,
4c544807 3927 name, __FUNCTION__);
cbe950e9
L		 3928 bfd_set_error (bfd_error_bad_value);
3929 return FALSE;
3930
3931 case R_386_32:
710ab287 3932 /* Generate dynamic relcoation only when there is a
c293fa49 3933 non-GOT reference in a shared object. */
0e1862bb 3934 if (bfd_link_pic (info) && h->non_got_ref)
710ab287
L		 3935 {
3936 Elf_Internal_Rela outrel;
710ab287
L		 3937 asection *sreloc;
3938 bfd_vma offset;
3939
c25bc9fc
L		 3940 /* Need a dynamic relocation to get the real function
3941 adddress. */
710ab287
L		 3942 offset = _bfd_elf_section_offset (output_bfd,
3943 info,
3944 input_section,
3945 rel->r_offset);
3946 if (offset == (bfd_vma) -1
3947 || offset == (bfd_vma) -2)
3948 abort ();
3949
3950 outrel.r_offset = (input_section->output_section->vma
3951 + input_section->output_offset
3952 + offset);
3953
3954 if (h->dynindx == -1
44c4ea11 3955 || h->forced_local
0e1862bb 3956 || bfd_link_executable (info))
710ab287
L		 3957 {
3958 /* This symbol is resolved locally. */
56b8aada
L		 3959 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3960 bfd_put_32 (output_bfd,
3961 (h->root.u.def.value
3962 + h->root.u.def.section->output_section->vma
3963 + h->root.u.def.section->output_offset),
3964 contents + offset);
710ab287
L		 3965 }
3966 else
56b8aada 3967 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3968
6de2ae4a 3969 sreloc = htab->elf.irelifunc;
59d6ffb2 3970 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3971
3972 /* If this reloc is against an external symbol, we
3973 do not want to fiddle with the addend. Otherwise,
3974 we need to include the symbol value so that it
3975 becomes an addend for the dynamic reloc. For an
3976 internal symbol, we have updated addend. */
56b8aada 3977 continue;
710ab287 3978 }
d59a60e9 3979 /* FALLTHROUGH */
cbe950e9
L		 3980 case R_386_PC32:
3981 case R_386_PLT32:
3982 goto do_relocation;
3983
3984 case R_386_GOT32:
02a86693 3985 case R_386_GOT32X:
6de2ae4a 3986 base_got = htab->elf.sgot;
cbe950e9
L		 3987 off = h->got.offset;
3988
7afd84dc 3989 if (base_got == NULL)
cbe950e9
L		 3990 abort ();
3991
7afd84dc 3992 if (off == (bfd_vma) -1)
cbe950e9 3993 {
7afd84dc
L		 3994 /* We can't use h->got.offset here to save state, or
3995 even just remember the offset, as finish_dynamic_symbol
3996 would use that as offset into .got. */
6bbec505 3997
6de2ae4a 3998 if (htab->elf.splt != NULL)
7afd84dc 3999 {
25e762b9 4000 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 4001 off = (plt_index + 3) * 4;
6de2ae4a 4002 base_got = htab->elf.sgotplt;
7afd84dc 4003 }
cbe950e9
L		 4004 else
4005 {
25e762b9 4006 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 4007 off = plt_index * 4;
6de2ae4a 4008 base_got = htab->elf.igotplt;
7afd84dc
L		 4009 }
4010
4011 if (h->dynindx == -1
4012 || h->forced_local
4013 || info->symbolic)
4014 {
4015 /* This references the local defitionion. We must
4016 initialize this entry in the global offset table.
4017 Since the offset must always be a multiple of 8,
4018 we use the least significant bit to record
4019 whether we have initialized it already.
4020
4021 When doing a dynamic link, we create a .rela.got
4022 relocation entry to initialize the value. This
4023 is done in the finish_dynamic_symbol routine. */
4024 if ((off & 1) != 0)
4025 off &= ~1;
4026 else
4027 {
4028 bfd_put_32 (output_bfd, relocation,
4029 base_got->contents + off);
4030 h->got.offset |= 1;
4031 }
cbe950e9 4032 }
cbe950e9 4033
7afd84dc 4034 relocation = off;
7afd84dc
L		 4035 }
4036 else
ca8c86ef
L		 4037 relocation = (base_got->output_section->vma
4038 + base_got->output_offset + off
4039 - gotplt->output_section->vma
4040 - gotplt->output_offset);
4041
712ec279
L		 4042 if ((*(contents + rel->r_offset - 1) & 0xc7) == 0x5)
4043 {
4044 if (bfd_link_pic (info))
4045 goto disallow_got32;
4046
4047 /* Add the GOT base if there is no base register. */
4048 relocation += (gotplt->output_section->vma
4049 + gotplt->output_offset);
4050 }
4051 else if (htab->elf.splt == NULL)
4052 {
4053 /* Adjust for static executables. */
4054 relocation += gotplt->output_offset;
4055 }
0018b0a3 4056
cbe950e9
L		 4057 goto do_relocation;
4058
4059 case R_386_GOTOFF:
4060 relocation -= (gotplt->output_section->vma
4061 + gotplt->output_offset);
4062 goto do_relocation;
4063 }
4064 }
4065
04ebc307 4066 eh = (struct elf_i386_link_hash_entry *) h;
aec6b87e 4067 resolved_to_zero = (eh != NULL
e62b9723
L		 4068 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
4069 eh->has_got_reloc,
4070 eh));
aec6b87e 4071
252b5132
RH		 4072 switch (r_type)
4073 {
02a86693
L		 4074 case R_386_GOT32X:
4075 /* Avoid optimizing _DYNAMIC since ld.so may use its
4076 link-time address. */
4077 if (h == htab->elf.hdynamic)
4078 goto r_386_got32;
4079
4080 if (bfd_link_pic (info))
4081 {
4082 /* It is OK to convert mov to lea and convert indirect
4083 branch to direct branch. It is OK to convert adc,
4084 add, and, cmp, or, sbb, sub, test, xor only when PIC
4085 is false. */
02e2aef8
L		 4086 unsigned int opcode, addend;
4087 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
4088 if (addend != 0)
4089 goto r_386_got32;
4090 opcode = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
02a86693
L		 4091 if (opcode != 0x8b && opcode != 0xff)
4092 goto r_386_got32;
4093 }
4094
4095 /* Resolve "mov GOT[(%reg)], %reg",
4096 "call/jmp *GOT[(%reg)]", "test %reg, foo@GOT[(%reg)]"
4097 and "binop foo@GOT[(%reg)], %reg". */
4098 if (h == NULL
4099 || (h->plt.offset == (bfd_vma) -1
4100 && h->got.offset == (bfd_vma) -1)
4101 || htab->elf.sgotplt == NULL)
4102 abort ();
4103
4104 offplt = (htab->elf.sgotplt->output_section->vma
4105 + htab->elf.sgotplt->output_offset);
4106
4107 /* It is relative to .got.plt section. */
4108 if (h->got.offset != (bfd_vma) -1)
32875eb1
L		 4109 /* Use GOT entry. Mask off the least significant bit in
4110 GOT offset which may be set by R_386_GOT32 processing
4111 below. */
02a86693
L		 4112 relocation = (htab->elf.sgot->output_section->vma
4113 + htab->elf.sgot->output_offset
32875eb1 4114 + (h->got.offset & ~1) - offplt);
02a86693
L		 4115 else
4116 /* Use GOTPLT entry. */
4117 relocation = (h->plt.offset / plt_entry_size - 1 + 3) * 4;
4118
4119 if (!bfd_link_pic (info))
4120 {
4121 /* If not PIC, add the .got.plt section address for
a3718e9e 4122 baseless addressing. */
02a86693 4123 unsigned int modrm;
02e2aef8 4124 modrm = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
02a86693
L		 4125 if ((modrm & 0xc7) == 0x5)
4126 relocation += offplt;
4127 }
4128
4129 unresolved_reloc = FALSE;
4130 break;
4131
252b5132 4132 case R_386_GOT32:
02a86693 4133r_386_got32:
252b5132
RH		 4134 /* Relocation is to the entry for this symbol in the global
4135 offset table. */
6de2ae4a 4136 if (htab->elf.sgot == NULL)
ffb2e45b 4137 abort ();
252b5132
RH		 4138
4139 if (h != NULL)
4140 {
b34976b6 4141 bfd_boolean dyn;
252b5132
RH		 4142
4143 off = h->got.offset;
ebe50bae 4144 dyn = htab->elf.dynamic_sections_created;
0e1862bb
L		 4145 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4146 bfd_link_pic (info),
4147 h)
4148 || (bfd_link_pic (info)
586119b3 4149 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 4150 || (ELF_ST_VISIBILITY (h->other)
4151 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 4152 {
4153 /* This is actually a static link, or it is a
4154 -Bsymbolic link and the symbol is defined
4155 locally, or the symbol was forced to be local
4156 because of a version file. We must initialize
4157 this entry in the global offset table. Since the
4158 offset must always be a multiple of 4, we use the
4159 least significant bit to record whether we have
4160 initialized it already.
4161
4162 When doing a dynamic link, we create a .rel.got
4163 relocation entry to initialize the value. This
4164 is done in the finish_dynamic_symbol routine. */
4165 if ((off & 1) != 0)
4166 off &= ~1;
4167 else
4168 {
4169 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4170 htab->elf.sgot->contents + off);
252b5132
RH		 4171 h->got.offset |= 1;
4172 }
4173 }
8c694914 4174 else
b34976b6 4175 unresolved_reloc = FALSE;
252b5132
RH		 4176 }
4177 else
4178 {
ffb2e45b
AM		 4179 if (local_got_offsets == NULL)
4180 abort ();
252b5132
RH		 4181
4182 off = local_got_offsets[r_symndx];
4183
4184 /* The offset must always be a multiple of 4. We use
83be169b
AM		 4185 the least significant bit to record whether we have
4186 already generated the necessary reloc. */
252b5132
RH		 4187 if ((off & 1) != 0)
4188 off &= ~1;
4189 else
4190 {
6725bdbf 4191 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4192 htab->elf.sgot->contents + off);
252b5132 4193
0e1862bb 4194 if (bfd_link_pic (info))
252b5132 4195 {
947216bf
AM		 4196 asection *s;
4197 Elf_Internal_Rela outrel;
252b5132 4198
6de2ae4a 4199 s = htab->elf.srelgot;
947216bf 4200 if (s == NULL)
ffb2e45b 4201 abort ();
252b5132 4202
6de2ae4a
L		 4203 outrel.r_offset = (htab->elf.sgot->output_section->vma
4204 + htab->elf.sgot->output_offset
252b5132
RH		 4205 + off);
4206 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 4207 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 4208 }
4209
4210 local_got_offsets[r_symndx] |= 1;
4211 }
252b5132
RH		 4212 }
4213
ffb2e45b
AM		 4214 if (off >= (bfd_vma) -2)
4215 abort ();
4216
74d7f0aa
L		 4217 relocation = (htab->elf.sgot->output_section->vma
4218 + htab->elf.sgot->output_offset + off);
4219 if ((*(contents + rel->r_offset - 1) & 0xc7) == 0x5)
4220 {
4221 if (bfd_link_pic (info))
4222 {
4223 /* For PIC, disallow R_386_GOT32 without a base
4224 register since we don't know what the GOT base
4225 is. */
4226 const char *name;
4227
712ec279 4228disallow_got32:
74d7f0aa
L		 4229 if (h == NULL)
4230 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4231 NULL);
4232 else
4233 name = h->root.root.string;
4234
4235 (*_bfd_error_handler)
712ec279
L		 4236 (_("%B: direct GOT relocation %s against `%s' without base register can not be used when making a shared object"),
4237 input_bfd, howto->name, name);
74d7f0aa
L		 4238 bfd_set_error (bfd_error_bad_value);
4239 return FALSE;
4240 }
4241 }
4242 else
4243 {
4244 /* Subtract the .got.plt section address only with a base
4245 register. */
4246 relocation -= (htab->elf.sgotplt->output_section->vma
4247 + htab->elf.sgotplt->output_offset);
4248 }
4249
252b5132
RH		 4250 break;
4251
4252 case R_386_GOTOFF:
4253 /* Relocation is relative to the start of the global offset
4254 table. */
4255
3d949995
L		 4256 /* Check to make sure it isn't a protected function or data
4257 symbol for shared library since it may not be local when
4258 used as function address or with copy relocation. We also
e3c0e327 4259 need to make sure that a symbol is referenced locally. */
0e1862bb 4260 if (!bfd_link_executable (info) && h)
90f487df 4261 {
41bed6dd
L		 4262 if (!h->def_regular)
4263 {
4264 const char *v;
4265
4266 switch (ELF_ST_VISIBILITY (h->other))
4267 {
4268 case STV_HIDDEN:
4269 v = _("hidden symbol");
4270 break;
4271 case STV_INTERNAL:
4272 v = _("internal symbol");
4273 break;
4274 case STV_PROTECTED:
4275 v = _("protected symbol");
4276 break;
4277 default:
4278 v = _("symbol");
4279 break;
4280 }
4281
4282 (*_bfd_error_handler)
4283 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
4284 input_bfd, v, h->root.root.string);
4285 bfd_set_error (bfd_error_bad_value);
4286 return FALSE;
4287 }
d5597ebc 4288 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
3d949995
L		 4289 && (h->type == STT_FUNC
4290 || h->type == STT_OBJECT)
41bed6dd
L		 4291 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
4292 {
4293 (*_bfd_error_handler)
3d949995
L		 4294 (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
4295 input_bfd,
4296 h->type == STT_FUNC ? "function" : "data",
4297 h->root.root.string);
41bed6dd
L		 4298 bfd_set_error (bfd_error_bad_value);
4299 return FALSE;
4300 }
90f487df
L		 4301 }
4302
8c37241b
JJ		 4303 /* Note that sgot is not involved in this
4304 calculation. We always want the start of .got.plt. If we
4305 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 4306 permitted by the ABI, we might have to change this
4307 calculation. */
6de2ae4a
L		 4308 relocation -= htab->elf.sgotplt->output_section->vma
4309 + htab->elf.sgotplt->output_offset;
252b5132
RH		 4310 break;
4311
4312 case R_386_GOTPC:
4313 /* Use global offset table as symbol value. */
6de2ae4a
L		 4314 relocation = htab->elf.sgotplt->output_section->vma
4315 + htab->elf.sgotplt->output_offset;
b34976b6 4316 unresolved_reloc = FALSE;
252b5132
RH		 4317 break;
4318
4319 case R_386_PLT32:
4320 /* Relocation is to the entry for this symbol in the
4321 procedure linkage table. */
4322
dd5724d5 4323 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 4324 without using the procedure linkage table. */
252b5132
RH		 4325 if (h == NULL)
4326 break;
4327
dd7e64d4
L		 4328 if ((h->plt.offset == (bfd_vma) -1
4329 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 4330 || htab->elf.splt == NULL)
252b5132
RH		 4331 {
4332 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 4333 happens when statically linking PIC code, or when
4334 using -Bsymbolic. */
252b5132
RH		 4335 break;
4336 }
4337
dd7e64d4
L		 4338 if (h->plt.offset != (bfd_vma) -1)
4339 {
4340 resolved_plt = htab->elf.splt;
4341 plt_offset = h->plt.offset;
4342 }
4343 else
4344 {
4345 resolved_plt = htab->plt_got;
4346 plt_offset = eh->plt_got.offset;
4347 }
4348
4349 relocation = (resolved_plt->output_section->vma
4350 + resolved_plt->output_offset
4351 + plt_offset);
b34976b6 4352 unresolved_reloc = FALSE;
252b5132
RH		 4353 break;
4354
1788fc08 4355 case R_386_SIZE32:
1788fc08
L		 4356 /* Set to symbol size. */
4357 relocation = st_size;
4358 /* Fall through. */
4359
252b5132
RH		 4360 case R_386_32:
4361 case R_386_PC32:
3348747a
NS		 4362 if ((input_section->flags & SEC_ALLOC) == 0
4363 || is_vxworks_tls)
ec338859
AM		 4364 break;
4365
aec6b87e
L		 4366 /* Copy dynamic function pointer relocations. Don't generate
4367 dynamic relocations against resolved undefined weak symbols
4368 in PIE, except for R_386_PC32. */
0e1862bb 4369 if ((bfd_link_pic (info)
ef5aade5 4370 && (h == NULL
aec6b87e
L		 4371 || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4372 && (!resolved_to_zero
4373 || r_type == R_386_PC32))
4374 || h->root.type != bfd_link_hash_undefweak))
1788fc08 4375 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 4376 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845 4377 || (ELIMINATE_COPY_RELOCS
0e1862bb 4378 && !bfd_link_pic (info)
12d0ee4a
AM		 4379 && h != NULL
4380 && h->dynindx != -1
aec6b87e
L		 4381 && (!h->non_got_ref
4382 || eh->func_pointer_refcount > 0
4383 || (h->root.type == bfd_link_hash_undefweak
4384 && !resolved_to_zero))
bae420ef
L		 4385 && ((h->def_dynamic && !h->def_regular)
4386 /* Undefined weak symbol is bound locally when
4387 PIC is false. */
4388 || h->root.type == bfd_link_hash_undefweak)))
252b5132 4389 {
947216bf 4390 Elf_Internal_Rela outrel;
b34976b6 4391 bfd_boolean skip, relocate;
0c715baa 4392 asection *sreloc;
252b5132
RH		 4393
4394 /* When generating a shared object, these relocations
4395 are copied into the output file to be resolved at run
4396 time. */
4397
b34976b6
AM		 4398 skip = FALSE;
4399 relocate = FALSE;
252b5132 4400
c629eae0
JJ		 4401 outrel.r_offset =
4402 _bfd_elf_section_offset (output_bfd, info, input_section,
4403 rel->r_offset);
4404 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4405 skip = TRUE;
0bb2d96a 4406 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4407 skip = TRUE, relocate = TRUE;
252b5132
RH		 4408 outrel.r_offset += (input_section->output_section->vma
4409 + input_section->output_offset);
4410
4411 if (skip)
0bb2d96a 4412 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 4413 else if (h != NULL
4414 && h->dynindx != -1
4415 && (r_type == R_386_PC32
4e0c91e4
L		 4416 || !(bfd_link_executable (info)
4417 || SYMBOLIC_BIND (info, h))
f5385ebf 4418 || !h->def_regular))
0bb2d96a 4419 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 4420 else
4421 {
5a15f56f 4422 /* This symbol is local, or marked to become local. */
b34976b6 4423 relocate = TRUE;
5a15f56f 4424 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 4425 }
4426
cbe950e9 4427 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 4428
62d78908
L		 4429 if (sreloc == NULL || sreloc->contents == NULL)
4430 {
4431 r = bfd_reloc_notsupported;
4432 goto check_relocation_error;
4433 }
0c715baa 4434
59d6ffb2 4435 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 4436
4437 /* If this reloc is against an external symbol, we do
4438 not want to fiddle with the addend. Otherwise, we
4439 need to include the symbol value so that it becomes
4440 an addend for the dynamic reloc. */
0f88be7a 4441 if (! relocate)
252b5132
RH		 4442 continue;
4443 }
252b5132
RH		 4444 break;
4445
37e55690 4446 case R_386_TLS_IE:
0e1862bb 4447 if (!bfd_link_executable (info))
37e55690 4448 {
947216bf 4449 Elf_Internal_Rela outrel;
37e55690 4450 asection *sreloc;
37e55690
JJ		 4451
4452 outrel.r_offset = rel->r_offset
4453 + input_section->output_section->vma
4454 + input_section->output_offset;
4455 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4456 sreloc = elf_section_data (input_section)->sreloc;
4457 if (sreloc == NULL)
4458 abort ();
59d6ffb2 4459 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4460 }
4461 /* Fall through */
4462
13ae64f3 4463 case R_386_TLS_GD:
67a4f2b7
AO		 4464 case R_386_TLS_GOTDESC:
4465 case R_386_TLS_DESC_CALL:
13ae64f3 4466 case R_386_TLS_IE_32:
37e55690 4467 case R_386_TLS_GOTIE:
13ae64f3
JJ		 4468 tls_type = GOT_UNKNOWN;
4469 if (h == NULL && local_got_offsets)
4470 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
4471 else if (h != NULL)
142411ca 4472 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 4473 if (tls_type == GOT_TLS_IE)
4474 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 4475
4476 if (! elf_i386_tls_transition (info, input_bfd,
4477 input_section, contents,
4478 symtab_hdr, sym_hashes,
4479 &r_type, tls_type, rel,
bedfd056 4480 relend, h, r_symndx, TRUE))
142411ca 4481 return FALSE;
13ae64f3
JJ		 4482
4483 if (r_type == R_386_TLS_LE_32)
4484 {
82e51918 4485 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 4486 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
4487 {
142411ca 4488 unsigned int type;
13ae64f3
JJ		 4489 bfd_vma roff;
4490
4491 /* GD->LE transition. */
6eaa7fb5 4492 type = *(contents + rel->r_offset - 2);
13ae64f3
JJ		 4493 if (type == 0x04)
4494 {
6eaa7fb5
L		 4495 /* Change
4496 leal foo@tlsgd(,%ebx,1), %eax
4497 call ___tls_get_addr@PLT
4498 into:
4499 movl %gs:0, %eax
4500 subl $foo@tpoff, %eax
13ae64f3 4501 (6 byte form of subl). */
142411ca 4502 roff = rel->r_offset + 5;
13ae64f3
JJ		 4503 }
4504 else
4505 {
6eaa7fb5
L		 4506 /* Change
4507 leal foo@tlsgd(%ebx), %eax
4508 call ___tls_get_addr@PLT
4509 nop
4510 or
4511 leal foo@tlsgd(%reg), %eax
4512 call *___tls_get_addr@GOT(%reg)
4513 which may be converted to
4514 addr32 call ___tls_get_addr
4515 into:
4516 movl %gs:0, %eax; subl $foo@tpoff, %eax
142411ca 4517 (6 byte form of subl). */
142411ca 4518 roff = rel->r_offset + 6;
13ae64f3 4519 }
6eaa7fb5
L		 4520 memcpy (contents + roff - 8,
4521 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
eb4ff4d6 4522 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 4523 contents + roff);
6eaa7fb5 4524 /* Skip R_386_PC32, R_386_PLT32 and R_386_GOT32X. */
13ae64f3 4525 rel++;
60f2e42e 4526 wrel++;
13ae64f3
JJ		 4527 continue;
4528 }
67a4f2b7
AO		 4529 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4530 {
4531 /* GDesc -> LE transition.
4532 It's originally something like:
4533 leal x@tlsdesc(%ebx), %eax
4534
4535 leal x@ntpoff, %eax
4536
4537 Registers other than %eax may be set up here. */
4538
142411ca 4539 unsigned int val;
67a4f2b7
AO		 4540 bfd_vma roff;
4541
67a4f2b7 4542 roff = rel->r_offset;
67a4f2b7 4543 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 4544
4545 /* Now modify the instruction as appropriate. */
4546 /* aoliva FIXME: remove the above and xor the byte
4547 below with 0x86. */
4548 bfd_put_8 (output_bfd, val ^ 0x86,
4549 contents + roff - 1);
eb4ff4d6 4550 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 4551 contents + roff);
4552 continue;
4553 }
4554 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4555 {
4556 /* GDesc -> LE transition.
4557 It's originally:
4558 call *(%eax)
4559 Turn it into:
142411ca 4560 xchg %ax,%ax */
67a4f2b7 4561
67a4f2b7 4562 bfd_vma roff;
6bbec505 4563
67a4f2b7 4564 roff = rel->r_offset;
10efb593 4565 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4566 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4567 continue;
4568 }
37e55690 4569 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 4570 {
142411ca 4571 unsigned int val;
13ae64f3
JJ		 4572
4573 /* IE->LE transition:
37e55690
JJ		 4574 Originally it can be one of:
4575 movl foo, %eax
4576 movl foo, %reg
4577 addl foo, %reg
4578 We change it into:
4579 movl $foo, %eax
4580 movl $foo, %reg
4581 addl $foo, %reg. */
37e55690 4582 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 4583 if (val == 0xa1)
4584 {
4585 /* movl foo, %eax. */
55fd94b0
AM		 4586 bfd_put_8 (output_bfd, 0xb8,
4587 contents + rel->r_offset - 1);
37e55690 4588 }
299bf759 4589 else
37e55690 4590 {
142411ca
L		 4591 unsigned int type;
4592
55fd94b0
AM		 4593 type = bfd_get_8 (input_bfd,
4594 contents + rel->r_offset - 2);
299bf759 4595 switch (type)
26e41594 4596 {
299bf759
L		 4597 case 0x8b:
4598 /* movl */
299bf759
L		 4599 bfd_put_8 (output_bfd, 0xc7,
4600 contents + rel->r_offset - 2);
4601 bfd_put_8 (output_bfd,
4602 0xc0 | ((val >> 3) & 7),
4603 contents + rel->r_offset - 1);
4604 break;
4605 case 0x03:
4606 /* addl */
299bf759
L		 4607 bfd_put_8 (output_bfd, 0x81,
4608 contents + rel->r_offset - 2);
4609 bfd_put_8 (output_bfd,
4610 0xc0 | ((val >> 3) & 7),
4611 contents + rel->r_offset - 1);
4612 break;
4613 default:
4614 BFD_FAIL ();
4615 break;
26e41594 4616 }
37e55690 4617 }
eb4ff4d6 4618 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4619 contents + rel->r_offset);
4620 continue;
4621 }
4622 else
4623 {
4624 unsigned int val, type;
4625
4626 /* {IE_32,GOTIE}->LE transition:
4627 Originally it can be one of:
13ae64f3 4628 subl foo(%reg1), %reg2
13ae64f3 4629 movl foo(%reg1), %reg2
37e55690 4630 addl foo(%reg1), %reg2
13ae64f3
JJ		 4631 We change it into:
4632 subl $foo, %reg2
37e55690
JJ		 4633 movl $foo, %reg2 (6 byte form)
4634 addl $foo, %reg2. */
13ae64f3
JJ		 4635 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4636 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4637 if (type == 0x8b)
4638 {
4639 /* movl */
13ae64f3
JJ		 4640 bfd_put_8 (output_bfd, 0xc7,
4641 contents + rel->r_offset - 2);
4642 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4643 contents + rel->r_offset - 1);
4644 }
4645 else if (type == 0x2b)
4646 {
4647 /* subl */
13ae64f3
JJ		 4648 bfd_put_8 (output_bfd, 0x81,
4649 contents + rel->r_offset - 2);
4650 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4651 contents + rel->r_offset - 1);
4652 }
37e55690
JJ		 4653 else if (type == 0x03)
4654 {
4655 /* addl */
4656 bfd_put_8 (output_bfd, 0x81,
4657 contents + rel->r_offset - 2);
4658 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4659 contents + rel->r_offset - 1);
4660 }
13ae64f3
JJ		 4661 else
4662 BFD_FAIL ();
37e55690 4663 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4664 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4665 contents + rel->r_offset);
4666 else
eb4ff4d6 4667 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4668 contents + rel->r_offset);
13ae64f3
JJ		 4669 continue;
4670 }
4671 }
4672
6de2ae4a 4673 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4674 abort ();
4675
4676 if (h != NULL)
67a4f2b7
AO		 4677 {
4678 off = h->got.offset;
4679 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4680 }
13ae64f3
JJ		 4681 else
4682 {
4683 if (local_got_offsets == NULL)
4684 abort ();
4685
4686 off = local_got_offsets[r_symndx];
67a4f2b7 4687 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4688 }
4689
4690 if ((off & 1) != 0)
4691 off &= ~1;
26e41594 4692 else
13ae64f3 4693 {
947216bf 4694 Elf_Internal_Rela outrel;
91d6fa6a 4695 int dr_type;
67a4f2b7 4696 asection *sreloc;
13ae64f3 4697
6de2ae4a 4698 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4699 abort ();
4700
67a4f2b7
AO		 4701 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4702
4703 if (GOT_TLS_GDESC_P (tls_type))
4704 {
59d6ffb2 4705 bfd_byte *loc;
67a4f2b7
AO		 4706 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4707 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4708 <= htab->elf.sgotplt->size);
4709 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4710 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4711 + offplt
4712 + htab->sgotplt_jump_table_size);
6de2ae4a 4713 sreloc = htab->elf.srelplt;
67a4f2b7 4714 loc = sreloc->contents;
5ae0bfb6
RS		 4715 loc += (htab->next_tls_desc_index++
4716 * sizeof (Elf32_External_Rel));
67a4f2b7 4717 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4718 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4719 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4720 if (indx == 0)
4721 {
4722 BFD_ASSERT (! unresolved_reloc);
4723 bfd_put_32 (output_bfd,
eb4ff4d6 4724 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4725 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4726 + htab->sgotplt_jump_table_size + 4);
4727 }
4728 else
4729 {
4730 bfd_put_32 (output_bfd, 0,
6de2ae4a 4731 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4732 + htab->sgotplt_jump_table_size + 4);
4733 }
4734 }
4735
6de2ae4a 4736 sreloc = htab->elf.srelgot;
67a4f2b7 4737
6de2ae4a
L		 4738 outrel.r_offset = (htab->elf.sgot->output_section->vma
4739 + htab->elf.sgot->output_offset + off);
13ae64f3 4740
67a4f2b7 4741 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4742 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4743 else if (GOT_TLS_GDESC_P (tls_type))
4744 goto dr_done;
37e55690
JJ		 4745 else if (tls_type == GOT_TLS_IE_POS)
4746 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4747 else
4748 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4749
37e55690 4750 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4751 bfd_put_32 (output_bfd,
4752 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4753 htab->elf.sgot->contents + off);
37e55690 4754 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4755 bfd_put_32 (output_bfd,
eb4ff4d6 4756 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4757 htab->elf.sgot->contents + off);
67a4f2b7 4758 else if (dr_type != R_386_TLS_DESC)
c366c25e 4759 bfd_put_32 (output_bfd, 0,
6de2ae4a 4760 htab->elf.sgot->contents + off);
13ae64f3 4761 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4762
59d6ffb2 4763 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4764
67a4f2b7 4765 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4766 {
4767 if (indx == 0)
4768 {
82e51918 4769 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4770 bfd_put_32 (output_bfd,
eb4ff4d6 4771 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4772 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4773 }
4774 else
4775 {
4776 bfd_put_32 (output_bfd, 0,
6de2ae4a 4777 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4778 outrel.r_info = ELF32_R_INFO (indx,
4779 R_386_TLS_DTPOFF32);
4780 outrel.r_offset += 4;
59d6ffb2 4781 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4782 }
4783 }
37e55690
JJ		 4784 else if (tls_type == GOT_TLS_IE_BOTH)
4785 {
4786 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4787 (indx == 0
4788 ? relocation - elf_i386_dtpoff_base (info)
4789 : 0),
6de2ae4a 4790 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4791 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4792 outrel.r_offset += 4;
59d6ffb2 4793 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4794 }
13ae64f3 4795
67a4f2b7 4796 dr_done:
13ae64f3
JJ		 4797 if (h != NULL)
4798 h->got.offset |= 1;
4799 else
4800 local_got_offsets[r_symndx] |= 1;
4801 }
4802
67a4f2b7
AO		 4803 if (off >= (bfd_vma) -2
4804 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4805 abort ();
67a4f2b7
AO		 4806 if (r_type == R_386_TLS_GOTDESC
4807 || r_type == R_386_TLS_DESC_CALL)
4808 {
4809 relocation = htab->sgotplt_jump_table_size + offplt;
4810 unresolved_reloc = FALSE;
4811 }
4812 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4813 {
6de2ae4a
L		 4814 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4815 + htab->elf.sgotplt->output_offset;
4816 relocation = htab->elf.sgot->output_section->vma
4817 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4818 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4819 && tls_type == GOT_TLS_IE_BOTH)
4820 relocation += 4;
4821 if (r_type == R_386_TLS_IE)
8c37241b 4822 relocation += g_o_t;
b34976b6 4823 unresolved_reloc = FALSE;
13ae64f3 4824 }
67a4f2b7 4825 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4826 {
4827 unsigned int val, type;
4828 bfd_vma roff;
4829
4830 /* GD->IE transition. */
6eaa7fb5
L		 4831 type = *(contents + rel->r_offset - 2);
4832 val = *(contents + rel->r_offset - 1);
13ae64f3
JJ		 4833 if (type == 0x04)
4834 {
6eaa7fb5
L		 4835 /* Change
4836 leal foo@tlsgd(,%ebx,1), %eax
4837 call ___tls_get_addr@PLT
4838 into:
4839 movl %gs:0, %eax
4840 subl $foo@gottpoff(%ebx), %eax. */
13ae64f3 4841 val >>= 3;
142411ca 4842 roff = rel->r_offset - 3;
13ae64f3
JJ		 4843 }
4844 else
4845 {
6eaa7fb5
L		 4846 /* Change
4847 leal foo@tlsgd(%ebx), %eax
4848 call ___tls_get_addr@PLT
4849 nop
4850 or
4851 leal foo@tlsgd(%reg), %eax
4852 call *___tls_get_addr@GOT(%reg)
4853 which may be converted to
4854 addr32 call ___tls_get_addr
4855 into:
4856 movl %gs:0, %eax;
4857 subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4858 roff = rel->r_offset - 2;
4859 }
4860 memcpy (contents + roff,
4861 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4862 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4863 /* If foo is used only with foo@gotntpoff(%reg) and
4864 foo@indntpoff, but not with foo@gottpoff(%reg), change
4865 subl $foo@gottpoff(%reg), %eax
4866 into:
4867 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4868 if (tls_type == GOT_TLS_IE_POS)
4869 contents[roff + 6] = 0x03;
8c37241b 4870 bfd_put_32 (output_bfd,
6de2ae4a
L		 4871 htab->elf.sgot->output_section->vma
4872 + htab->elf.sgot->output_offset + off
4873 - htab->elf.sgotplt->output_section->vma
4874 - htab->elf.sgotplt->output_offset,
13ae64f3 4875 contents + roff + 8);
6eaa7fb5 4876 /* Skip R_386_PLT32 and R_386_GOT32X. */
13ae64f3 4877 rel++;
60f2e42e 4878 wrel++;
13ae64f3
JJ		 4879 continue;
4880 }
67a4f2b7
AO		 4881 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4882 {
4883 /* GDesc -> IE transition.
4884 It's originally something like:
4885 leal x@tlsdesc(%ebx), %eax
4886
4887 Change it to:
142411ca 4888 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4889 or:
4890 movl x@gottpoff(%ebx), %eax # before negl %eax
4891
4892 Registers other than %eax may be set up here. */
4893
67a4f2b7
AO		 4894 bfd_vma roff;
4895
4896 /* First, make sure it's a leal adding ebx to a 32-bit
4897 offset into any register, although it's probably
4898 almost always going to be eax. */
4899 roff = rel->r_offset;
67a4f2b7
AO		 4900
4901 /* Now modify the instruction as appropriate. */
4902 /* To turn a leal into a movl in the form we use it, it
4903 suffices to change the first byte from 0x8d to 0x8b.
4904 aoliva FIXME: should we decide to keep the leal, all
4905 we have to do is remove the statement below, and
4906 adjust the relaxation of R_386_TLS_DESC_CALL. */
4907 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4908
4909 if (tls_type == GOT_TLS_IE_BOTH)
4910 off += 4;
4911
4912 bfd_put_32 (output_bfd,
6de2ae4a
L		 4913 htab->elf.sgot->output_section->vma
4914 + htab->elf.sgot->output_offset + off
4915 - htab->elf.sgotplt->output_section->vma
4916 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4917 contents + roff);
4918 continue;
4919 }
4920 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4921 {
4922 /* GDesc -> IE transition.
4923 It's originally:
4924 call *(%eax)
4925
4926 Change it to:
142411ca 4927 xchg %ax,%ax
67a4f2b7
AO		 4928 or
4929 negl %eax
4930 depending on how we transformed the TLS_GOTDESC above.
4931 */
4932
67a4f2b7
AO		 4933 bfd_vma roff;
4934
67a4f2b7 4935 roff = rel->r_offset;
67a4f2b7
AO		 4936
4937 /* Now modify the instruction as appropriate. */
4938 if (tls_type != GOT_TLS_IE_NEG)
4939 {
10efb593
L		 4940 /* xchg %ax,%ax */
4941 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4942 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4943 }
4944 else
4945 {
4946 /* negl %eax */
4947 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4948 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4949 }
4950
4951 continue;
4952 }
4953 else
4954 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4955 break;
4956
4957 case R_386_TLS_LDM:
142411ca
L		 4958 if (! elf_i386_tls_transition (info, input_bfd,
4959 input_section, contents,
4960 symtab_hdr, sym_hashes,
4961 &r_type, GOT_UNKNOWN, rel,
bedfd056 4962 relend, h, r_symndx, TRUE))
142411ca 4963 return FALSE;
13ae64f3 4964
142411ca
L		 4965 if (r_type != R_386_TLS_LDM)
4966 {
6eaa7fb5
L		 4967 /* LD->LE transition. Change
4968 leal foo@tlsldm(%ebx) %eax
4969 call ___tls_get_addr@PLT
4970 into:
4971 movl %gs:0, %eax
4972 nop
4973 leal 0(%esi,1), %esi
4974 or change
4975 leal foo@tlsldm(%reg) %eax
4976 call *___tls_get_addr@GOT(%reg)
4977 which may be converted to
4978 addr32 call ___tls_get_addr
4979 into:
4980 movl %gs:0, %eax
4981 leal 0(%esi), %esi */
142411ca 4982 BFD_ASSERT (r_type == R_386_TLS_LE_32);
6eaa7fb5
L		 4983 if (*(contents + rel->r_offset + 4) == 0xff
4984 || *(contents + rel->r_offset + 4) == 0x67)
4985 memcpy (contents + rel->r_offset - 2,
4986 "\x65\xa1\0\0\0\0\x8d\xb6\0\0\0", 12);
4987 else
4988 memcpy (contents + rel->r_offset - 2,
4989 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4990 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3 4991 rel++;
60f2e42e 4992 wrel++;
13ae64f3
JJ		 4993 continue;
4994 }
4995
6de2ae4a 4996 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4997 abort ();
4998
4999 off = htab->tls_ldm_got.offset;
5000 if (off & 1)
5001 off &= ~1;
5002 else
5003 {
947216bf 5004 Elf_Internal_Rela outrel;
13ae64f3 5005
6de2ae4a 5006 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 5007 abort ();
5008
6de2ae4a
L		 5009 outrel.r_offset = (htab->elf.sgot->output_section->vma
5010 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 5011
5012 bfd_put_32 (output_bfd, 0,
6de2ae4a 5013 htab->elf.sgot->contents + off);
13ae64f3 5014 bfd_put_32 (output_bfd, 0,
6de2ae4a 5015 htab->elf.sgot->contents + off + 4);
13ae64f3 5016 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 5017 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 5018 htab->tls_ldm_got.offset |= 1;
5019 }
6de2ae4a
L		 5020 relocation = htab->elf.sgot->output_section->vma
5021 + htab->elf.sgot->output_offset + off
5022 - htab->elf.sgotplt->output_section->vma
5023 - htab->elf.sgotplt->output_offset;
b34976b6 5024 unresolved_reloc = FALSE;
13ae64f3
JJ		 5025 break;
5026
5027 case R_386_TLS_LDO_32:
0e1862bb
L		 5028 if (!bfd_link_executable (info)
5029 || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 5030 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 5031 else
5032 /* When converting LDO to LE, we must negate. */
eb4ff4d6 5033 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 5034 break;
5035
5036 case R_386_TLS_LE_32:
13ae64f3 5037 case R_386_TLS_LE:
0e1862bb 5038 if (!bfd_link_executable (info))
37e55690 5039 {
947216bf 5040 Elf_Internal_Rela outrel;
37e55690 5041 asection *sreloc;
37e55690
JJ		 5042
5043 outrel.r_offset = rel->r_offset
5044 + input_section->output_section->vma
5045 + input_section->output_offset;
5046 if (h != NULL && h->dynindx != -1)
5047 indx = h->dynindx;
5048 else
5049 indx = 0;
5050 if (r_type == R_386_TLS_LE_32)
5051 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
5052 else
5053 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
5054 sreloc = elf_section_data (input_section)->sreloc;
5055 if (sreloc == NULL)
5056 abort ();
59d6ffb2 5057 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 5058 if (indx)
5059 continue;
5060 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 5061 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 5062 else
eb4ff4d6 5063 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 5064 }
5065 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 5066 relocation = elf_i386_tpoff (info, relocation);
37e55690 5067 else
eb4ff4d6 5068 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 5069 break;
5070
252b5132
RH		 5071 default:
5072 break;
5073 }
5074
239e1f3a
AM		 5075 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5076 because such sections are not SEC_ALLOC and thus ld.so will
5077 not process them. */
8c694914 5078 if (unresolved_reloc
239e1f3a 5079 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 5080 && h->def_dynamic)
5081 && _bfd_elf_section_offset (output_bfd, info, input_section,
5082 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 5083 {
5084 (*_bfd_error_handler)
843fe662 5085 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 5086 input_bfd,
5087 input_section,
6a30718d 5088 (long) rel->r_offset,
843fe662 5089 howto->name,
6a30718d 5090 h->root.root.string);
b34976b6 5091 return FALSE;
6a30718d 5092 }
83be169b 5093
cbe950e9 5094do_relocation:
252b5132
RH		 5095 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5096 contents, rel->r_offset,
55fd94b0 5097 relocation, 0);
252b5132 5098
62d78908 5099check_relocation_error:
cf5c0c5b 5100 if (r != bfd_reloc_ok)
252b5132 5101 {
cf5c0c5b 5102 const char *name;
ffb2e45b 5103
cf5c0c5b
AM		 5104 if (h != NULL)
5105 name = h->root.root.string;
5106 else
5107 {
5108 name = bfd_elf_string_from_elf_section (input_bfd,
5109 symtab_hdr->sh_link,
5110 sym->st_name);
5111 if (name == NULL)
b34976b6 5112 return FALSE;
cf5c0c5b
AM		 5113 if (*name == '\0')
5114 name = bfd_section_name (input_bfd, sec);
5115 }
ffb2e45b 5116
cf5c0c5b 5117 if (r == bfd_reloc_overflow)
1a72702b
AM		 5118 (*info->callbacks->reloc_overflow)
5119 (info, (h ? &h->root : NULL), name, howto->name,
5120 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
cf5c0c5b
AM		 5121 else
5122 {
5123 (*_bfd_error_handler)
d003868e
AM		 5124 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
5125 input_bfd, input_section,
cf5c0c5b 5126 (long) rel->r_offset, name, (int) r);
b34976b6 5127 return FALSE;
cf5c0c5b 5128 }
252b5132 5129 }
60f2e42e
L		 5130
5131 if (wrel != rel)
5132 *wrel = *rel;
5133 }
5134
5135 if (wrel != rel)
5136 {
5137 Elf_Internal_Shdr *rel_hdr;
5138 size_t deleted = rel - wrel;
5139
5140 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
5141 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5142 if (rel_hdr->sh_size == 0)
5143 {
5144 /* It is too late to remove an empty reloc section. Leave
5145 one NONE reloc.
5146 ??? What is wrong with an empty section??? */
5147 rel_hdr->sh_size = rel_hdr->sh_entsize;
5148 deleted -= 1;
5149 }
5150 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
5151 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5152 input_section->reloc_count -= deleted;
252b5132
RH		 5153 }
5154
b34976b6 5155 return TRUE;
252b5132
RH		 5156}
5157
5158/* Finish up dynamic symbol handling. We set the contents of various
5159 dynamic sections here. */
5160
b34976b6 5161static bfd_boolean
55fd94b0
AM		 5162elf_i386_finish_dynamic_symbol (bfd *output_bfd,
5163 struct bfd_link_info *info,
5164 struct elf_link_hash_entry *h,
5165 Elf_Internal_Sym *sym)
252b5132 5166{
6725bdbf 5167 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 5168 unsigned plt_entry_size;
5169 const struct elf_i386_backend_data *abed;
dd7e64d4 5170 struct elf_i386_link_hash_entry *eh;
aec6b87e 5171 bfd_boolean local_undefweak;
252b5132 5172
6725bdbf 5173 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5174 if (htab == NULL)
5175 return FALSE;
252b5132 5176
25e762b9
RM		 5177 abed = get_elf_i386_backend_data (output_bfd);
5178 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
5179
dd7e64d4
L		 5180 eh = (struct elf_i386_link_hash_entry *) h;
5181
aec6b87e
L		 5182 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
5183 resolved undefined weak symbols in executable so that their
5184 references have value 0 at run-time. */
e62b9723
L		 5185 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
5186 eh->has_got_reloc,
5187 eh);
aec6b87e 5188
252b5132
RH		 5189 if (h->plt.offset != (bfd_vma) -1)
5190 {
252b5132
RH		 5191 bfd_vma plt_index;
5192 bfd_vma got_offset;
947216bf
AM		 5193 Elf_Internal_Rela rel;
5194 bfd_byte *loc;
cbe950e9
L		 5195 asection *plt, *gotplt, *relplt;
5196
5197 /* When building a static executable, use .iplt, .igot.plt and
5198 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 5199 if (htab->elf.splt != NULL)
cbe950e9 5200 {
6de2ae4a
L		 5201 plt = htab->elf.splt;
5202 gotplt = htab->elf.sgotplt;
5203 relplt = htab->elf.srelplt;
cbe950e9
L		 5204 }
5205 else
5206 {
6de2ae4a
L		 5207 plt = htab->elf.iplt;
5208 gotplt = htab->elf.igotplt;
5209 relplt = htab->elf.irelplt;
cbe950e9 5210 }
252b5132
RH		 5211
5212 /* This symbol has an entry in the procedure linkage table. Set
5213 it up. */
5214
cbe950e9 5215 if ((h->dynindx == -1
aec6b87e 5216 && !local_undefweak
0e1862bb 5217 && !((h->forced_local || bfd_link_executable (info))
cbe950e9
L		 5218 && h->def_regular
5219 && h->type == STT_GNU_IFUNC))
5220 || plt == NULL
5221 || gotplt == NULL
5222 || relplt == NULL)
cec7f46a 5223 abort ();
252b5132
RH		 5224
5225 /* Get the index in the procedure linkage table which
5226 corresponds to this symbol. This is the index of this symbol
5227 in all the symbols for which we are making plt entries. The
cbe950e9 5228 first entry in the procedure linkage table is reserved.
252b5132 5229
cbe950e9 5230 Get the offset into the .got table of the entry that
252b5132 5231 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 5232 The first three are reserved.
6bbec505 5233
cbe950e9
L		 5234 For static executables, we don't reserve anything. */
5235
6de2ae4a 5236 if (plt == htab->elf.splt)
cbe950e9 5237 {
e1f98742
L		 5238 got_offset = h->plt.offset / plt_entry_size - 1;
5239 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 5240 }
5241 else
5242 {
e1f98742
L		 5243 got_offset = h->plt.offset / plt_entry_size;
5244 got_offset = got_offset * 4;
cbe950e9 5245 }
252b5132
RH		 5246
5247 /* Fill in the entry in the procedure linkage table. */
0e1862bb 5248 if (! bfd_link_pic (info))
252b5132 5249 {
25e762b9
RM		 5250 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
5251 abed->plt->plt_entry_size);
252b5132 5252 bfd_put_32 (output_bfd,
cbe950e9
L		 5253 (gotplt->output_section->vma
5254 + gotplt->output_offset
252b5132 5255 + got_offset),
25e762b9
RM		 5256 plt->contents + h->plt.offset
5257 + abed->plt->plt_got_offset);
eac338cf 5258
25e762b9 5259 if (abed->is_vxworks)
eac338cf
PB		 5260 {
5261 int s, k, reloc_index;
5262
5263 /* Create the R_386_32 relocation referencing the GOT
5264 for this PLT entry. */
5265
5266 /* S: Current slot number (zero-based). */
25e762b9
RM		 5267 s = ((h->plt.offset - abed->plt->plt_entry_size)
5268 / abed->plt->plt_entry_size);
eac338cf 5269 /* K: Number of relocations for PLTResolve. */
0e1862bb 5270 if (bfd_link_pic (info))
eac338cf
PB		 5271 k = PLTRESOLVE_RELOCS_SHLIB;
5272 else
5273 k = PLTRESOLVE_RELOCS;
5274 /* Skip the PLTresolve relocations, and the relocations for
5275 the other PLT slots. */
5276 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
5277 loc = (htab->srelplt2->contents + reloc_index
5278 * sizeof (Elf32_External_Rel));
5279
6de2ae4a
L		 5280 rel.r_offset = (htab->elf.splt->output_section->vma
5281 + htab->elf.splt->output_offset
eac338cf 5282 + h->plt.offset + 2),
7325306f 5283 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5284 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5285
5286 /* Create the R_386_32 relocation referencing the beginning of
5287 the PLT for this GOT entry. */
6de2ae4a
L		 5288 rel.r_offset = (htab->elf.sgotplt->output_section->vma
5289 + htab->elf.sgotplt->output_offset
eac338cf 5290 + got_offset);
7325306f 5291 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 5292 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 5293 loc + sizeof (Elf32_External_Rel));
eac338cf 5294 }
252b5132
RH		 5295 }
5296 else
5297 {
25e762b9
RM		 5298 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
5299 abed->plt->plt_entry_size);
252b5132 5300 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 5301 plt->contents + h->plt.offset
5302 + abed->plt->plt_got_offset);
252b5132
RH		 5303 }
5304
aec6b87e
L		 5305 /* Fill in the entry in the global offset table. Leave the entry
5306 as zero for undefined weak symbol in PIE. No PLT relocation
5307 against undefined weak symbol in PIE. */
5308 if (!local_undefweak)
cbe950e9 5309 {
cbe950e9 5310 bfd_put_32 (output_bfd,
aec6b87e
L		 5311 (plt->output_section->vma
5312 + plt->output_offset
5313 + h->plt.offset
5314 + abed->plt->plt_lazy_offset),
cbe950e9 5315 gotplt->contents + got_offset);
252b5132 5316
aec6b87e
L		 5317 /* Fill in the entry in the .rel.plt section. */
5318 rel.r_offset = (gotplt->output_section->vma
5319 + gotplt->output_offset
5320 + got_offset);
5321 if (h->dynindx == -1
5322 || ((bfd_link_executable (info)
5323 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5324 && h->def_regular
5325 && h->type == STT_GNU_IFUNC))
5326 {
5327 /* If an STT_GNU_IFUNC symbol is locally defined, generate
5328 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
5329 in the .got.plt section. */
5330 bfd_put_32 (output_bfd,
5331 (h->root.u.def.value
5332 + h->root.u.def.section->output_section->vma
5333 + h->root.u.def.section->output_offset),
5334 gotplt->contents + got_offset);
5335 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
5336 /* R_386_IRELATIVE comes last. */
5337 plt_index = htab->next_irelative_index--;
5338 }
5339 else
5340 {
5341 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
5342 plt_index = htab->next_jump_slot_index++;
5343 }
5344
5345 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
5346 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5347
5348 /* Don't fill PLT entry for static executables. */
5349 if (plt == htab->elf.splt)
5350 {
5351 bfd_put_32 (output_bfd,
5352 plt_index * sizeof (Elf32_External_Rel),
5353 plt->contents + h->plt.offset
5354 + abed->plt->plt_reloc_offset);
5355 bfd_put_32 (output_bfd, - (h->plt.offset
5356 + abed->plt->plt_plt_offset + 4),
5357 plt->contents + h->plt.offset
5358 + abed->plt->plt_plt_offset);
5359 }
e1f98742 5360 }
dd7e64d4
L		 5361 }
5362 else if (eh->plt_got.offset != (bfd_vma) -1)
5363 {
5364 bfd_vma got_offset, plt_offset;
5365 asection *plt, *got, *gotplt;
5366 const bfd_byte *got_plt_entry;
5367
5368 /* Offset of displacement of the indirect jump. */
5369 bfd_vma plt_got_offset = 2;
e1f98742 5370
dd7e64d4
L		 5371 /* Set the entry in the GOT procedure linkage table. */
5372 plt = htab->plt_got;
5373 got = htab->elf.sgot;
5374 gotplt = htab->elf.sgotplt;
5375 got_offset = h->got.offset;
5376
5377 if (got_offset == (bfd_vma) -1
5378 || plt == NULL
5379 || got == NULL
5380 || gotplt == NULL)
5381 abort ();
5382
5383 /* Fill in the entry in the GOT procedure linkage table. */
0e1862bb 5384 if (! bfd_link_pic (info))
252b5132 5385 {
dd7e64d4
L		 5386 got_plt_entry = elf_i386_got_plt_entry;
5387 got_offset += got->output_section->vma + got->output_offset;
252b5132 5388 }
dd7e64d4
L		 5389 else
5390 {
5391 got_plt_entry = elf_i386_pic_got_plt_entry;
5392 got_offset += (got->output_section->vma
5393 + got->output_offset
5394 - gotplt->output_section->vma
5395 - gotplt->output_offset);
5396 }
5397
5398 plt_offset = eh->plt_got.offset;
5399 memcpy (plt->contents + plt_offset, got_plt_entry,
5400 sizeof (elf_i386_got_plt_entry));
5401 bfd_put_32 (output_bfd, got_offset,
5402 plt->contents + plt_offset + plt_got_offset);
5403 }
5404
aec6b87e
L		 5405 if (!local_undefweak
5406 && !h->def_regular
dd7e64d4
L		 5407 && (h->plt.offset != (bfd_vma) -1
5408 || eh->plt_got.offset != (bfd_vma) -1))
5409 {
5410 /* Mark the symbol as undefined, rather than as defined in
5411 the .plt section. Leave the value if there were any
5412 relocations where pointer equality matters (this is a clue
5413 for the dynamic linker, to make function pointer
5414 comparisons work between an application and shared
5415 library), otherwise set it to zero. If a function is only
5416 called from a binary, there is no need to slow down
5417 shared libraries because of that. */
5418 sym->st_shndx = SHN_UNDEF;
5419 if (!h->pointer_equality_needed)
5420 sym->st_value = 0;
252b5132
RH		 5421 }
5422
aec6b87e
L		 5423 /* Don't generate dynamic GOT relocation against undefined weak
5424 symbol in executable. */
13ae64f3 5425 if (h->got.offset != (bfd_vma) -1
67a4f2b7 5426 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
aec6b87e
L		 5427 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0
5428 && !local_undefweak)
252b5132 5429 {
947216bf 5430 Elf_Internal_Rela rel;
252b5132
RH		 5431
5432 /* This symbol has an entry in the global offset table. Set it
5433 up. */
5434
6de2ae4a 5435 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 5436 abort ();
252b5132 5437
6de2ae4a
L		 5438 rel.r_offset = (htab->elf.sgot->output_section->vma
5439 + htab->elf.sgot->output_offset
dc810e39 5440 + (h->got.offset & ~(bfd_vma) 1));
252b5132 5441
dd5724d5
AM		 5442 /* If this is a static link, or it is a -Bsymbolic link and the
5443 symbol is defined locally or was forced to be local because
5444 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 5445 The entry in the global offset table will already have been
5446 initialized in the relocate_section function. */
710ab287 5447 if (h->def_regular
0018b0a3
L		 5448 && h->type == STT_GNU_IFUNC)
5449 {
0e1862bb 5450 if (bfd_link_pic (info))
710ab287
L		 5451 {
5452 /* Generate R_386_GLOB_DAT. */
5453 goto do_glob_dat;
5454 }
5455 else
5456 {
cd2b2c10
L		 5457 asection *plt;
5458
710ab287
L		 5459 if (!h->pointer_equality_needed)
5460 abort ();
5461
5462 /* For non-shared object, we can't use .got.plt, which
5463 contains the real function addres if we need pointer
5464 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 5465 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 5466 bfd_put_32 (output_bfd,
5467 (plt->output_section->vma
5468 + plt->output_offset + h->plt.offset),
6de2ae4a 5469 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 5470 return TRUE;
5471 }
0018b0a3 5472 }
0e1862bb 5473 else if (bfd_link_pic (info)
0018b0a3 5474 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 5475 {
6725bdbf 5476 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 5477 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
5478 }
252b5132
RH		 5479 else
5480 {
dd5724d5 5481 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 5482do_glob_dat:
6725bdbf 5483 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 5484 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 5485 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
5486 }
5487
59d6ffb2 5488 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 5489 }
5490
f5385ebf 5491 if (h->needs_copy)
252b5132 5492 {
947216bf 5493 Elf_Internal_Rela rel;
252b5132
RH		 5494
5495 /* This symbol needs a copy reloc. Set it up. */
5496
ffb2e45b
AM		 5497 if (h->dynindx == -1
5498 || (h->root.type != bfd_link_hash_defined
5499 && h->root.type != bfd_link_hash_defweak)
5500 || htab->srelbss == NULL)
5501 abort ();
252b5132
RH		 5502
5503 rel.r_offset = (h->root.u.def.value
5504 + h->root.u.def.section->output_section->vma
5505 + h->root.u.def.section->output_offset);
5506 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 5507 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 5508 }
5509
b34976b6 5510 return TRUE;
252b5132
RH		 5511}
5512
c25bc9fc
L		 5513/* Finish up local dynamic symbol handling. We set the contents of
5514 various dynamic sections here. */
5515
5516static bfd_boolean
5517elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
5518{
5519 struct elf_link_hash_entry *h
5520 = (struct elf_link_hash_entry *) *slot;
5521 struct bfd_link_info *info
23209a78 5522 = (struct bfd_link_info *) inf;
c25bc9fc
L		 5523
5524 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
5525 h, NULL);
5526}
5527
aec6b87e
L		 5528/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
5529 here since undefined weak symbol may not be dynamic and may not be
5530 called for elf_i386_finish_dynamic_symbol. */
5531
5532static bfd_boolean
5533elf_i386_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
5534 void *inf)
5535{
5536 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
5537 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5538
5539 if (h->root.type != bfd_link_hash_undefweak
5540 || h->dynindx != -1)
5541 return TRUE;
5542
5543 return elf_i386_finish_dynamic_symbol (info->output_bfd,
5544 info, h, NULL);
5545}
5546
38701953
AM		 5547/* Used to decide how to sort relocs in an optimal manner for the
5548 dynamic linker, before writing them out. */
5549
5550static enum elf_reloc_type_class
cae1fbbb 5551elf_i386_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 5552 const asection *rel_sec ATTRIBUTE_UNUSED,
5553 const Elf_Internal_Rela *rela)
38701953 5554{
cae1fbbb
L		 5555 bfd *abfd = info->output_bfd;
5556 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
5557 struct elf_link_hash_table *htab = elf_hash_table (info);
cae1fbbb 5558
d9e3b590
L		 5559 if (htab->dynsym != NULL
5560 && htab->dynsym->contents != NULL)
5561 {
5562 /* Check relocation against STT_GNU_IFUNC symbol if there are
5563 dynamic symbols. */
5564 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
5565 Elf_Internal_Sym sym;
5566 if (!bed->s->swap_symbol_in (abfd,
5567 (htab->dynsym->contents
5568 + r_symndx * sizeof (Elf32_External_Sym)),
5569 0, &sym))
5570 abort ();
5571
5572 if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
5573 return reloc_class_ifunc;
5574 }
cae1fbbb 5575
55fd94b0 5576 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 5577 {
5578 case R_386_RELATIVE:
5579 return reloc_class_relative;
5580 case R_386_JUMP_SLOT:
5581 return reloc_class_plt;
5582 case R_386_COPY:
5583 return reloc_class_copy;
5584 default:
5585 return reloc_class_normal;
5586 }
5587}
5588
252b5132
RH		 5589/* Finish up the dynamic sections. */
5590
b34976b6 5591static bfd_boolean
55fd94b0
AM		 5592elf_i386_finish_dynamic_sections (bfd *output_bfd,
5593 struct bfd_link_info *info)
252b5132 5594{
6725bdbf 5595 struct elf_i386_link_hash_table *htab;
252b5132 5596 bfd *dynobj;
252b5132 5597 asection *sdyn;
25e762b9 5598 const struct elf_i386_backend_data *abed;
252b5132 5599
6725bdbf 5600 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5601 if (htab == NULL)
5602 return FALSE;
5603
ebe50bae 5604 dynobj = htab->elf.dynobj;
3d4d4302 5605 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 5606 abed = get_elf_i386_backend_data (output_bfd);
252b5132 5607
ebe50bae 5608 if (htab->elf.dynamic_sections_created)
252b5132 5609 {
252b5132
RH		 5610 Elf32_External_Dyn *dyncon, *dynconend;
5611
6de2ae4a 5612 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 5613 abort ();
252b5132
RH		 5614
5615 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 5616 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 5617 for (; dyncon < dynconend; dyncon++)
5618 {
5619 Elf_Internal_Dyn dyn;
51b64d56 5620 asection *s;
252b5132
RH		 5621
5622 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5623
5624 switch (dyn.d_tag)
5625 {
5626 default:
25e762b9
RM		 5627 if (abed->is_vxworks
5628 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 5629 break;
0ac8d2ca 5630 continue;
252b5132
RH		 5631
5632 case DT_PLTGOT:
6de2ae4a 5633 s = htab->elf.sgotplt;
8c37241b 5634 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 5635 break;
5636
252b5132 5637 case DT_JMPREL:
6de2ae4a 5638 s = htab->elf.srelplt;
6348e046 5639 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 5640 break;
5641
5642 case DT_PLTRELSZ:
6de2ae4a 5643 s = htab->elf.srelplt;
eea6121a 5644 dyn.d_un.d_val = s->size;
252b5132
RH		 5645 break;
5646
5647 case DT_RELSZ:
5648 /* My reading of the SVR4 ABI indicates that the
5649 procedure linkage table relocs (DT_JMPREL) should be
5650 included in the overall relocs (DT_REL). This is
5651 what Solaris does. However, UnixWare can not handle
5652 that case. Therefore, we override the DT_RELSZ entry
6348e046 5653 here to make it not include the JMPREL relocs. */
6de2ae4a 5654 s = htab->elf.srelplt;
6348e046
AM		 5655 if (s == NULL)
5656 continue;
eea6121a 5657 dyn.d_un.d_val -= s->size;
6348e046
AM		 5658 break;
5659
5660 case DT_REL:
5661 /* We may not be using the standard ELF linker script.
5662 If .rel.plt is the first .rel section, we adjust
5663 DT_REL to not include it. */
6de2ae4a 5664 s = htab->elf.srelplt;
6348e046
AM		 5665 if (s == NULL)
5666 continue;
5667 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
5668 continue;
eea6121a 5669 dyn.d_un.d_ptr += s->size;
252b5132
RH		 5670 break;
5671 }
0ac8d2ca
AM		 5672
5673 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 5674 }
5675
5676 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 5677 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132 5678 {
0e1862bb 5679 if (bfd_link_pic (info))
eac338cf 5680 {
25e762b9
RM		 5681 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
5682 abed->plt->plt0_entry_size);
5683 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5684 abed->plt0_pad_byte,
5685 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 5686 }
252b5132
RH		 5687 else
5688 {
25e762b9
RM		 5689 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
5690 abed->plt->plt0_entry_size);
5691 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5692 abed->plt0_pad_byte,
5693 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 5694 bfd_put_32 (output_bfd,
6de2ae4a
L		 5695 (htab->elf.sgotplt->output_section->vma
5696 + htab->elf.sgotplt->output_offset
6725bdbf 5697 + 4),
25e762b9
RM		 5698 htab->elf.splt->contents
5699 + abed->plt->plt0_got1_offset);
252b5132 5700 bfd_put_32 (output_bfd,
6de2ae4a
L		 5701 (htab->elf.sgotplt->output_section->vma
5702 + htab->elf.sgotplt->output_offset
6725bdbf 5703 + 8),
25e762b9
RM		 5704 htab->elf.splt->contents
5705 + abed->plt->plt0_got2_offset);
eac338cf 5706
25e762b9 5707 if (abed->is_vxworks)
eac338cf
PB		 5708 {
5709 Elf_Internal_Rela rel;
7325306f 5710
eac338cf
PB		 5711 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
5712 On IA32 we use REL relocations so the addend goes in
5713 the PLT directly. */
6de2ae4a
L		 5714 rel.r_offset = (htab->elf.splt->output_section->vma
5715 + htab->elf.splt->output_offset
25e762b9 5716 + abed->plt->plt0_got1_offset);
7325306f 5717 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5718 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5719 htab->srelplt2->contents);
5720 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 5721 rel.r_offset = (htab->elf.splt->output_section->vma
5722 + htab->elf.splt->output_offset
25e762b9 5723 + abed->plt->plt0_got2_offset);
7325306f 5724 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5725 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5726 htab->srelplt2->contents +
5727 sizeof (Elf32_External_Rel));
5728 }
252b5132
RH		 5729 }
5730
5731 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5732 really seem like the right value. */
6de2ae4a 5733 elf_section_data (htab->elf.splt->output_section)
6725bdbf 5734 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 5735
5736 /* Correct the .rel.plt.unloaded relocations. */
0e1862bb 5737 if (abed->is_vxworks && !bfd_link_pic (info))
eac338cf 5738 {
25e762b9
RM		 5739 int num_plts = (htab->elf.splt->size
5740 / abed->plt->plt_entry_size) - 1;
4c9b0de6 5741 unsigned char *p;
eac338cf
PB		 5742
5743 p = htab->srelplt2->contents;
0e1862bb 5744 if (bfd_link_pic (info))
eac338cf
PB		 5745 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5746 else
5747 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5748
5749 for (; num_plts; num_plts--)
5750 {
5751 Elf_Internal_Rela rel;
5752 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5753 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5754 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5755 p += sizeof (Elf32_External_Rel);
5756
5757 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5758 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 5759 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5760 p += sizeof (Elf32_External_Rel);
5761 }
5762 }
252b5132
RH		 5763 }
5764 }
5765
6de2ae4a 5766 if (htab->elf.sgotplt)
252b5132 5767 {
56d4289c
L		 5768 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5769 {
5770 (*_bfd_error_handler)
5771 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5772 return FALSE;
5773 }
5774
12d0ee4a 5775 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5776 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 5777 {
5778 bfd_put_32 (output_bfd,
55fd94b0 5779 (sdyn == NULL ? 0
12d0ee4a 5780 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 5781 htab->elf.sgotplt->contents);
5782 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5783 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 5784 }
252b5132 5785
6de2ae4a 5786 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5787 }
8c37241b 5788
e41b3a13 5789 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5790 if (htab->plt_eh_frame != NULL
5791 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5792 {
5793 if (htab->elf.splt != NULL
5794 && htab->elf.splt->size != 0
5795 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5796 && htab->elf.splt->output_section != NULL
5797 && htab->plt_eh_frame->output_section != NULL)
5798 {
5799 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5800 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5801 + htab->plt_eh_frame->output_offset
5802 + PLT_FDE_START_OFFSET;
5803 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5804 htab->plt_eh_frame->contents
5805 + PLT_FDE_START_OFFSET);
5806 }
5807 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5808 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5809 {
5810 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5811 htab->plt_eh_frame,
5812 htab->plt_eh_frame->contents))
5813 return FALSE;
5814 }
5815 }
5816
6de2ae4a
L		 5817 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5818 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5819
c25bc9fc
L		 5820 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5821 htab_traverse (htab->loc_hash_table,
5822 elf_i386_finish_local_dynamic_symbol,
5823 info);
5824
aec6b87e
L		 5825 /* Fill PLT entries for undefined weak symbols in PIE. */
5826 if (bfd_link_pie (info))
5827 bfd_hash_traverse (&info->hash->table,
5828 elf_i386_pie_finish_undefweak_symbol,
5829 info);
5830
b34976b6 5831 return TRUE;
252b5132
RH		 5832}
5833
3972882e 5834/* Return an array of PLT entry symbol values. */
4c45e5c9 5835
3972882e
L		 5836static bfd_vma *
5837elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5838 asection *relplt)
4c45e5c9 5839{
3972882e
L		 5840 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5841 arelent *p;
5842 long count, i;
5843 bfd_vma *plt_sym_val;
144bed8d 5844 bfd_vma plt_offset;
3972882e
L		 5845 bfd_byte *plt_contents;
5846 const struct elf_i386_backend_data *bed
5847 = get_elf_i386_backend_data (abfd);
5848 Elf_Internal_Shdr *hdr;
5849
5850 /* Get the .plt section contents. */
5851 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5852 if (plt_contents == NULL)
5853 return NULL;
5854 if (!bfd_get_section_contents (abfd, (asection *) plt,
5855 plt_contents, 0, plt->size))
5856 {
5857bad_return:
5858 free (plt_contents);
5859 return NULL;
5860 }
144bed8d 5861
3972882e
L		 5862 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5863 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5864 goto bad_return;
144bed8d 5865
3972882e
L		 5866 hdr = &elf_section_data (relplt)->this_hdr;
5867 count = relplt->size / hdr->sh_entsize;
5868
5869 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5870 if (plt_sym_val == NULL)
5871 goto bad_return;
cca5b8b6 5872
35181b3e 5873 for (i = 0; i < count; i++)
3972882e 5874 plt_sym_val[i] = -1;
cca5b8b6 5875
3972882e
L		 5876 plt_offset = bed->plt->plt_entry_size;
5877 p = relplt->relocation;
5878 for (i = 0; i < count; i++, p++)
144bed8d 5879 {
3972882e
L		 5880 long reloc_index;
5881
6f25f223 5882 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
533d0af0 5883 if (p->howto == NULL)
6f25f223 5884 continue;
533d0af0
L		 5885
5886 if (p->howto->type != R_386_JUMP_SLOT
5887 && p->howto->type != R_386_IRELATIVE)
3972882e
L		 5888 continue;
5889
5890 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
5891 + bed->plt->plt_reloc_offset));
5892 reloc_index /= sizeof (Elf32_External_Rel);
ec1f73bb
AM		 5893 if (reloc_index < count)
5894 plt_sym_val[reloc_index] = plt->vma + plt_offset;
5895
144bed8d 5896 plt_offset += bed->plt->plt_entry_size;
fca6ae69
L		 5897
5898 /* PR binutils/18437: Skip extra relocations in the .rel.plt
5899 section. */
5900 if (plt_offset >= plt->size)
5901 break;
144bed8d
L		 5902 }
5903
3972882e
L		 5904 free (plt_contents);
5905
5906 return plt_sym_val;
5907}
5908
5909/* Similar to _bfd_elf_get_synthetic_symtab. */
5910
5911static long
5912elf_i386_get_synthetic_symtab (bfd *abfd,
5913 long symcount,
5914 asymbol **syms,
5915 long dynsymcount,
5916 asymbol **dynsyms,
5917 asymbol **ret)
5918{
5919 asection *plt = bfd_get_section_by_name (abfd, ".plt");
5920 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
5921 dynsymcount, dynsyms, ret,
5922 plt,
5923 elf_i386_get_plt_sym_val);
4c45e5c9
JJ		 5924}
5925
fdc90cb4
JJ		 5926/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5927
5928static bfd_boolean
5929elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5930{
5931 if (h->plt.offset != (bfd_vma) -1
5932 && !h->def_regular
5933 && !h->pointer_equality_needed)
5934 return FALSE;
5935
5936 return _bfd_elf_hash_symbol (h);
5937}
4c45e5c9 5938
6d00b590 5939#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 5940#define TARGET_LITTLE_NAME "elf32-i386"
5941#define ELF_ARCH bfd_arch_i386
ae95ffa6 5942#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5943#define ELF_MACHINE_CODE EM_386
5944#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5945
5946#define elf_backend_can_gc_sections 1
51b64d56 5947#define elf_backend_can_refcount 1
252b5132
RH		 5948#define elf_backend_want_got_plt 1
5949#define elf_backend_plt_readonly 1
5950#define elf_backend_want_plt_sym 0
5951#define elf_backend_got_header_size 12
e41b3a13 5952#define elf_backend_plt_alignment 4
f7483970 5953#define elf_backend_extern_protected_data 1
bedfd056 5954#define elf_backend_caches_rawsize 1
252b5132 5955
8c29f035
AM		 5956/* Support RELA for objdump of prelink objects. */
5957#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5958#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5959
13ae64f3 5960#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5961
dd5724d5
AM		 5962#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5963#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
5964#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5965#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 5966#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5
AM		 5967
5968#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5969#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5970#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5971#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5972#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5973#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5974#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5975#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5976#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
c5fccbec
DJ		 5977#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5978#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5979#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5980#define elf_backend_relocate_section elf_i386_relocate_section
5981#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5982#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5983#define elf_backend_omit_section_dynsym \
5984 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
fdc90cb4 5985#define elf_backend_hash_symbol elf_i386_hash_symbol
aec6b87e 5986#define elf_backend_fixup_symbol elf_i386_fixup_symbol
dd5724d5 5987
252b5132 5988#include "elf32-target.h"
2bc3c89a
AM		 5989
5990/* FreeBSD support. */
5991
5992#undef TARGET_LITTLE_SYM
6d00b590 5993#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 5994#undef TARGET_LITTLE_NAME
5995#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5996#undef ELF_OSABI
5997#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5998
5999/* The kernel recognizes executables as valid only if they carry a
6000 "FreeBSD" label in the ELF header. So we put this label on all
6001 executables and (for simplicity) also all other object files. */
6002
2bc3c89a 6003static void
d8045f23 6004elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 6005{
78245035 6006 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 6007
2bc3c89a 6008#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 6009 {
6010 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
6011 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
6012 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
6013 }
caf47ea6 6014#endif
2bc3c89a
AM		 6015}
6016
6017#undef elf_backend_post_process_headers
d8045f23 6018#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 6019#undef elf32_bed
6020#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 6021
d8045f23
NC		 6022#undef elf_backend_add_symbol_hook
6023
2bc3c89a 6024#include "elf32-target.h"
eac338cf 6025
a6cc6b3b
RO		 6026/* Solaris 2. */
6027
6028#undef TARGET_LITTLE_SYM
6d00b590 6029#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 6030#undef TARGET_LITTLE_NAME
6031#define TARGET_LITTLE_NAME "elf32-i386-sol2"
6032
914082d1
L		 6033#undef elf_backend_post_process_headers
6034
a6cc6b3b
RO		 6035/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
6036 objects won't be recognized. */
6037#undef ELF_OSABI
6038
6039#undef elf32_bed
6040#define elf32_bed elf32_i386_sol2_bed
6041
7dc98aea
RO		 6042/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
6043 boundary. */
84865015 6044#undef elf_backend_static_tls_alignment
7dc98aea
RO		 6045#define elf_backend_static_tls_alignment 8
6046
a6cc6b3b
RO		 6047/* The Solaris 2 ABI requires a plt symbol on all platforms.
6048
6049 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
6050 File, p.63. */
84865015 6051#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 6052#define elf_backend_want_plt_sym 1
6053
84865015
NC		 6054#undef elf_backend_strtab_flags
6055#define elf_backend_strtab_flags SHF_STRINGS
6056
5522f910
NC		 6057/* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
6058 has a type >= SHT_LOOS. Returns TRUE if these fields were initialised
6059 FALSE otherwise. ISECTION is the best guess matching section from the
6060 input bfd IBFD, but it might be NULL. */
6061
84865015 6062static bfd_boolean
5522f910
NC		 6063elf32_i386_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
6064 bfd *obfd ATTRIBUTE_UNUSED,
6065 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
6066 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 6067{
6068 /* PR 19938: FIXME: Need to add code for setting the sh_info
5522f910
NC		 6069 and sh_link fields of Solaris specific section types. */
6070 return FALSE;
84865015 6071
5522f910 6072 /* Based upon Oracle Solaris 11.3 Linkers and Libraries Guide, Ch. 13,
84865015
NC		 6073 Object File Format, Table 13-9 ELF sh_link and sh_info Interpretation:
6074
6075http://docs.oracle.com/cd/E53394_01/html/E54813/chapter6-94076.html#scrolltoc
6076
6077 The following values should be set:
6078
6079Type Link Info
6080-----------------------------------------------------------------------------
6081SHT_SUNW_ancillary The section header index of 0
6082 [0x6fffffee] the associated string table.
6083
6084SHT_SUNW_capinfo The section header index of For a dynamic object, the
6085 [0x6ffffff0] the associated symbol table. section header index of
6086 the associated
6087 SHT_SUNW_capchain table,
6088 otherwise 0.
6089
6090SHT_SUNW_symsort The section header index of 0
6091 [0x6ffffff1] the associated symbol table.
6092
6093SHT_SUNW_tlssort The section header index of 0
6094 [0x6ffffff2] the associated symbol table.
6095
6096SHT_SUNW_LDYNSYM The section header index of One greater than the
6097 [0x6ffffff3] the associated string table. symbol table index of the
6098 This index is the same string last local symbol,
6099 table used by the SHT_DYNSYM STB_LOCAL. Since
6100 section. SHT_SUNW_LDYNSYM only
6101 contains local symbols,
6102 sh_info is equivalent to
6103 the number of symbols in
6104 the table.
6105
6106SHT_SUNW_cap If symbol capabilities exist, If any capabilities refer
6107 [0x6ffffff5] the section header index of to named strings, the
6108 the associated section header index of
6109 SHT_SUNW_capinfo table, the associated string
6110 otherwise 0. table, otherwise 0.
6111
6112SHT_SUNW_move The section header index of 0
6113 [0x6ffffffa] the associated symbol table.
6114
6115SHT_SUNW_COMDAT 0 0
6116 [0x6ffffffb]
6117
6118SHT_SUNW_syminfo The section header index of The section header index
6119 [0x6ffffffc] the associated symbol table. of the associated
6120 .dynamic section.
6121
6122SHT_SUNW_verdef The section header index of The number of version
6123 [0x6ffffffd] the associated string table. definitions within the
6124 section.
6125
6126SHT_SUNW_verneed The section header index of The number of version
6127 [0x6ffffffe] the associated string table. dependencies within the
6128 section.
6129
6130SHT_SUNW_versym The section header index of 0
6131 [0x6fffffff] the associated symbol table. */
84865015
NC		 6132}
6133
5522f910
NC		 6134#undef elf_backend_copy_special_section_fields
6135#define elf_backend_copy_special_section_fields elf32_i386_copy_solaris_special_section_fields
84865015 6136
a6cc6b3b
RO		 6137#include "elf32-target.h"
6138
bf64a951
L		 6139/* Intel MCU support. */
6140
6141static bfd_boolean
6142elf32_iamcu_elf_object_p (bfd *abfd)
6143{
6144 /* Set the right machine number for an IAMCU elf32 file. */
6145 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
6146 return TRUE;
6147}
6148
6149#undef TARGET_LITTLE_SYM
6150#define TARGET_LITTLE_SYM iamcu_elf32_vec
6151#undef TARGET_LITTLE_NAME
6152#define TARGET_LITTLE_NAME "elf32-iamcu"
84865015 6153#undef ELF_ARCH
bf64a951
L		 6154#define ELF_ARCH bfd_arch_iamcu
6155
6156#undef ELF_MACHINE_CODE
6157#define ELF_MACHINE_CODE EM_IAMCU
6158
6159#undef ELF_OSABI
6160
6161#undef elf32_bed
6162#define elf32_bed elf32_iamcu_bed
6163
6164#undef elf_backend_object_p
6165#define elf_backend_object_p elf32_iamcu_elf_object_p
6166
6167#undef elf_backend_static_tls_alignment
6168
6169#undef elf_backend_want_plt_sym
6170#define elf_backend_want_plt_sym 0
6171
84865015 6172#undef elf_backend_strtab_flags
5522f910 6173#undef elf_backend_copy_special_section_fields
84865015 6174
bf64a951
L		 6175#include "elf32-target.h"
6176
6177/* Restore defaults. */
6178#undef ELF_ARCH
6179#define ELF_ARCH bfd_arch_i386
6180#undef ELF_MACHINE_CODE
6181#define ELF_MACHINE_CODE EM_386
6182
a27e4371
RM		 6183/* Native Client support. */
6184
6185#undef TARGET_LITTLE_SYM
6d00b590 6186#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 6187#undef TARGET_LITTLE_NAME
6188#define TARGET_LITTLE_NAME "elf32-i386-nacl"
6189#undef elf32_bed
6190#define elf32_bed elf32_i386_nacl_bed
6191
6192#undef ELF_MAXPAGESIZE
6193#define ELF_MAXPAGESIZE 0x10000
6194
6195/* Restore defaults. */
6196#undef ELF_OSABI
6197#undef elf_backend_want_plt_sym
6198#define elf_backend_want_plt_sym 0
6199#undef elf_backend_post_process_headers
a27e4371
RM		 6200#undef elf_backend_static_tls_alignment
6201
6202/* NaCl uses substantially different PLT entries for the same effects. */
6203
6204#undef elf_backend_plt_alignment
6205#define elf_backend_plt_alignment 5
6206#define NACL_PLT_ENTRY_SIZE 64
6207#define NACLMASK 0xe0 /* 32-byte alignment mask. */
6208
6209static const bfd_byte elf_i386_nacl_plt0_entry[] =
6210 {
6211 0xff, 0x35, /* pushl contents of address */
6212 0, 0, 0, 0, /* replaced with address of .got + 4. */
6213 0x8b, 0x0d, /* movl contents of address, %ecx */
6214 0, 0, 0, 0, /* replaced with address of .got + 8. */
6215 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
6216 0xff, 0xe1 /* jmp *%ecx */
6217 };
6218
6219static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
6220 {
6221 0x8b, 0x0d, /* movl contents of address, %ecx */
6222 0, 0, 0, 0, /* replaced with GOT slot address. */
6223 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
6224 0xff, 0xe1, /* jmp *%ecx */
6225
6226 /* Pad to the next 32-byte boundary with nop instructions. */
6227 0x90,
6228 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6229 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6230
6231 /* Lazy GOT entries point here (32-byte aligned). */
6232 0x68, /* pushl immediate */
6233 0, 0, 0, 0, /* replaced with reloc offset. */
6234 0xe9, /* jmp relative */
6235 0, 0, 0, 0, /* replaced with offset to .plt. */
6236
6237 /* Pad to the next 32-byte boundary with nop instructions. */
6238 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6239 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6240 0x90, 0x90
6241 };
6242
6243static const bfd_byte
6244elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
6245 {
6246 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
6247 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
6248 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
6249 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 6250
6251 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
6252 so pad to that size with nop instructions. */
6253 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 6254 };
6255
6256static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
6257 {
6258 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
6259 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
6260 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
6261 0xff, 0xe1, /* jmp *%ecx */
6262
6263 /* Pad to the next 32-byte boundary with nop instructions. */
6264 0x90,
6265 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6266 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6267
6268 /* Lazy GOT entries point here (32-byte aligned). */
6269 0x68, /* pushl immediate */
6270 0, 0, 0, 0, /* replaced with offset into relocation table. */
6271 0xe9, /* jmp relative */
6272 0, 0, 0, 0, /* replaced with offset to start of .plt. */
6273
6274 /* Pad to the next 32-byte boundary with nop instructions. */
6275 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6276 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6277 0x90, 0x90
6278 };
6279
6280static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
6281 {
6282#if (PLT_CIE_LENGTH != 20 \
6283 || PLT_FDE_LENGTH != 36 \
6284 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
6285 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
6286# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
6287#endif
6288 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
6289 0, 0, 0, 0, /* CIE ID */
6290 1, /* CIE version */
6291 'z', 'R', 0, /* Augmentation string */
6292 1, /* Code alignment factor */
6293 0x7c, /* Data alignment factor: -4 */
6294 8, /* Return address column */
6295 1, /* Augmentation size */
6296 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
6297 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
6298 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
6299 DW_CFA_nop, DW_CFA_nop,
6300
6301 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
6302 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
6303 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
6304 0, 0, 0, 0, /* .plt size goes here */
6305 0, /* Augmentation size */
6306 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
6307 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
6308 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
6309 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
6310 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
6311 13, /* Block length */
6312 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
6313 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
6314 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
6315 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
6316 DW_CFA_nop, DW_CFA_nop
6317 };
6318
6319static const struct elf_i386_plt_layout elf_i386_nacl_plt =
6320 {
6321 elf_i386_nacl_plt0_entry, /* plt0_entry */
6322 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
6323 2, /* plt0_got1_offset */
6324 8, /* plt0_got2_offset */
6325 elf_i386_nacl_plt_entry, /* plt_entry */
6326 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
6327 2, /* plt_got_offset */
6328 33, /* plt_reloc_offset */
6329 38, /* plt_plt_offset */
6330 32, /* plt_lazy_offset */
6331 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
6332 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
6333 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
6334 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
6335 };
6336
6337static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
6338 {
6339 &elf_i386_nacl_plt, /* plt */
6340 0x90, /* plt0_pad_byte: nop insn */
6341 0, /* is_vxworks */
6342 };
6343
64b384e1
RM		 6344static bfd_boolean
6345elf32_i386_nacl_elf_object_p (bfd *abfd)
6346{
6347 /* Set the right machine number for a NaCl i386 ELF32 file. */
6348 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
6349 return TRUE;
6350}
6351
a27e4371
RM		 6352#undef elf_backend_arch_data
6353#define elf_backend_arch_data &elf_i386_nacl_arch_bed
6354
64b384e1
RM		 6355#undef elf_backend_object_p
6356#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 6357#undef elf_backend_modify_segment_map
6358#define elf_backend_modify_segment_map nacl_modify_segment_map
6359#undef elf_backend_modify_program_headers
6360#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 6361#undef elf_backend_final_write_processing
6362#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 6363
a27e4371
RM		 6364#include "elf32-target.h"
6365
5a68afcf 6366/* Restore defaults. */
64b384e1 6367#undef elf_backend_object_p
5a68afcf
RM		 6368#undef elf_backend_modify_segment_map
6369#undef elf_backend_modify_program_headers
887badb3 6370#undef elf_backend_final_write_processing
5a68afcf 6371
eac338cf
PB		 6372/* VxWorks support. */
6373
6374#undef TARGET_LITTLE_SYM
6d00b590 6375#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 6376#undef TARGET_LITTLE_NAME
6377#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 6378#undef ELF_OSABI
a27e4371
RM		 6379#undef elf_backend_plt_alignment
6380#define elf_backend_plt_alignment 4
eac338cf 6381
23209a78
RM		 6382static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
6383 {
25e762b9 6384 &elf_i386_plt, /* plt */
23209a78
RM		 6385 0x90, /* plt0_pad_byte */
6386 1, /* is_vxworks */
6387 };
eac338cf 6388
23209a78
RM		 6389#undef elf_backend_arch_data
6390#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 6391
13285a1b 6392#undef elf_backend_relocs_compatible
eac338cf
PB		 6393#undef elf_backend_add_symbol_hook
6394#define elf_backend_add_symbol_hook \
6395 elf_vxworks_add_symbol_hook
6396#undef elf_backend_link_output_symbol_hook
6397#define elf_backend_link_output_symbol_hook \
9c72ff84 6398 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 6399#undef elf_backend_emit_relocs
6400#define elf_backend_emit_relocs elf_vxworks_emit_relocs
6401#undef elf_backend_final_write_processing
6402#define elf_backend_final_write_processing \
6403 elf_vxworks_final_write_processing
7dc98aea 6404#undef elf_backend_static_tls_alignment
eac338cf
PB		 6405
6406/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
6407 define it. */
6408#undef elf_backend_want_plt_sym
6409#define elf_backend_want_plt_sym 1
6410
6411#undef elf32_bed
6412#define elf32_bed elf32_i386_vxworks_bed
6413
6414#include "elf32-target.h"
GDB Binutils - Deliverables
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