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Fix grammar in error message.
[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
6f2750fe 2 Copyright (C) 1993-2016 Free Software Foundation, Inc.
252b5132 3
571fe01f 4 This file is part of BFD, the Binary File Descriptor library.
252b5132 5
571fe01f
NC		 6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
cd123cb7 8 the Free Software Foundation; either version 3 of the License, or
571fe01f 9 (at your option) any later version.
252b5132 10
571fe01f
NC		 11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
252b5132 15
571fe01f
NC		 16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
cd123cb7
NC		 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
252b5132 20
252b5132 21#include "sysdep.h"
3db64b00 22#include "bfd.h"
252b5132
RH		 23#include "bfdlink.h"
24#include "libbfd.h"
25#include "elf-bfd.h"
5a68afcf 26#include "elf-nacl.h"
eac338cf 27#include "elf-vxworks.h"
142411ca 28#include "bfd_stdint.h"
c25bc9fc
L		 29#include "objalloc.h"
30#include "hashtab.h"
e41b3a13 31#include "dwarf2.h"
02a86693 32#include "opcode/i386.h"
252b5132 33
55fd94b0
AM		 34/* 386 uses REL relocations instead of RELA. */
35#define USE_REL 1
252b5132
RH		 36
37#include "elf/i386.h"
38
39static reloc_howto_type elf_howto_table[]=
40{
6346d5ca 41 HOWTO(R_386_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
1b452ec6 42 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 43 TRUE, 0x00000000, 0x00000000, FALSE),
44 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 45 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 46 TRUE, 0xffffffff, 0xffffffff, FALSE),
47 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 48 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 49 TRUE, 0xffffffff, 0xffffffff, TRUE),
50 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 51 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 52 TRUE, 0xffffffff, 0xffffffff, FALSE),
53 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 54 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 55 TRUE, 0xffffffff, 0xffffffff, TRUE),
56 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 57 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 58 TRUE, 0xffffffff, 0xffffffff, FALSE),
59 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 60 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 61 TRUE, 0xffffffff, 0xffffffff, FALSE),
62 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 63 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 64 TRUE, 0xffffffff, 0xffffffff, FALSE),
65 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 66 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 67 TRUE, 0xffffffff, 0xffffffff, FALSE),
68 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 69 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 70 TRUE, 0xffffffff, 0xffffffff, FALSE),
71 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 72 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 73 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 74
dc47f327
AM		 75 /* We have a gap in the reloc numbers here.
76 R_386_standard counts the number up to this point, and
77 R_386_ext_offset is the value to subtract from a reloc type of
78 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 79#define R_386_standard (R_386_GOTPC + 1)
80#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 81
37e55690 82 /* These relocs are a GNU extension. */
b34976b6 83 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 84 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 85 TRUE, 0xffffffff, 0xffffffff, FALSE),
86 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 87 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 88 TRUE, 0xffffffff, 0xffffffff, FALSE),
89 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 90 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 91 TRUE, 0xffffffff, 0xffffffff, FALSE),
92 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 93 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 94 TRUE, 0xffffffff, 0xffffffff, FALSE),
95 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 96 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 97 TRUE, 0xffffffff, 0xffffffff, FALSE),
98 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 99 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 100 TRUE, 0xffffffff, 0xffffffff, FALSE),
101 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 102 bfd_elf_generic_reloc, "R_386_16",
b34976b6 103 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 104 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 105 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 106 TRUE, 0xffff, 0xffff, TRUE),
107 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 108 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 109 TRUE, 0xff, 0xff, FALSE),
110 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 111 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 112 TRUE, 0xff, 0xff, TRUE),
dc47f327 113
55fd94b0
AM		 114#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
115#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 116 /* These are common with Solaris TLS implementation. */
b34976b6 117 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 118 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 119 TRUE, 0xffffffff, 0xffffffff, FALSE),
120 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 121 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 122 TRUE, 0xffffffff, 0xffffffff, FALSE),
123 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 124 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 125 TRUE, 0xffffffff, 0xffffffff, FALSE),
126 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 127 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 128 TRUE, 0xffffffff, 0xffffffff, FALSE),
129 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 130 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 131 TRUE, 0xffffffff, 0xffffffff, FALSE),
132 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 133 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 134 TRUE, 0xffffffff, 0xffffffff, FALSE),
1788fc08
L		 135 HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
136 bfd_elf_generic_reloc, "R_386_SIZE32",
137 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 138 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
139 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
140 TRUE, 0xffffffff, 0xffffffff, FALSE),
141 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
142 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
143 FALSE, 0, 0, FALSE),
144 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
145 bfd_elf_generic_reloc, "R_386_TLS_DESC",
146 TRUE, 0xffffffff, 0xffffffff, FALSE),
cbe950e9
L		 147 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_386_IRELATIVE",
149 TRUE, 0xffffffff, 0xffffffff, FALSE),
02a86693
L		 150 HOWTO(R_386_GOT32X, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_386_GOT32X",
152 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 153
154 /* Another gap. */
02a86693 155#define R_386_ext2 (R_386_GOT32X + 1 - R_386_tls_offset)
c74be520 156#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_ext2)
252b5132
RH		 157
158/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 159 HOWTO (R_386_GNU_VTINHERIT, /* type */
160 0, /* rightshift */
161 2, /* size (0 = byte, 1 = short, 2 = long) */
162 0, /* bitsize */
b34976b6 163 FALSE, /* pc_relative */
252b5132
RH		 164 0, /* bitpos */
165 complain_overflow_dont, /* complain_on_overflow */
166 NULL, /* special_function */
167 "R_386_GNU_VTINHERIT", /* name */
b34976b6 168 FALSE, /* partial_inplace */
252b5132
RH		 169 0, /* src_mask */
170 0, /* dst_mask */
b34976b6 171 FALSE), /* pcrel_offset */
252b5132
RH		 172
173/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 174 HOWTO (R_386_GNU_VTENTRY, /* type */
175 0, /* rightshift */
176 2, /* size (0 = byte, 1 = short, 2 = long) */
177 0, /* bitsize */
b34976b6 178 FALSE, /* pc_relative */
252b5132
RH		 179 0, /* bitpos */
180 complain_overflow_dont, /* complain_on_overflow */
181 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
182 "R_386_GNU_VTENTRY", /* name */
b34976b6 183 FALSE, /* partial_inplace */
252b5132
RH		 184 0, /* src_mask */
185 0, /* dst_mask */
b34976b6 186 FALSE) /* pcrel_offset */
dc47f327 187
55fd94b0 188#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 189
190};
191
252b5132 192#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 193#define TRACE(str) \
194 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 195#else
196#define TRACE(str)
197#endif
198
199static reloc_howto_type *
55fd94b0
AM		 200elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
201 bfd_reloc_code_real_type code)
252b5132
RH		 202{
203 switch (code)
204 {
205 case BFD_RELOC_NONE:
206 TRACE ("BFD_RELOC_NONE");
55fd94b0 207 return &elf_howto_table[R_386_NONE];
252b5132
RH		 208
209 case BFD_RELOC_32:
210 TRACE ("BFD_RELOC_32");
55fd94b0 211 return &elf_howto_table[R_386_32];
252b5132
RH		 212
213 case BFD_RELOC_CTOR:
214 TRACE ("BFD_RELOC_CTOR");
55fd94b0 215 return &elf_howto_table[R_386_32];
252b5132
RH		 216
217 case BFD_RELOC_32_PCREL:
218 TRACE ("BFD_RELOC_PC32");
55fd94b0 219 return &elf_howto_table[R_386_PC32];
252b5132
RH		 220
221 case BFD_RELOC_386_GOT32:
222 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 223 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 224
225 case BFD_RELOC_386_PLT32:
226 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 227 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 228
229 case BFD_RELOC_386_COPY:
230 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 231 return &elf_howto_table[R_386_COPY];
252b5132
RH		 232
233 case BFD_RELOC_386_GLOB_DAT:
234 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 235 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 236
237 case BFD_RELOC_386_JUMP_SLOT:
238 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 239 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 240
241 case BFD_RELOC_386_RELATIVE:
242 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 243 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 244
245 case BFD_RELOC_386_GOTOFF:
246 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 247 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 248
249 case BFD_RELOC_386_GOTPC:
250 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 251 return &elf_howto_table[R_386_GOTPC];
252b5132 252
37e55690
JJ		 253 /* These relocs are a GNU extension. */
254 case BFD_RELOC_386_TLS_TPOFF:
255 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 256 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 257
258 case BFD_RELOC_386_TLS_IE:
259 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 260 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 261
262 case BFD_RELOC_386_TLS_GOTIE:
263 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 264 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 265
13ae64f3
JJ		 266 case BFD_RELOC_386_TLS_LE:
267 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 268 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 269
270 case BFD_RELOC_386_TLS_GD:
271 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 272 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 273
274 case BFD_RELOC_386_TLS_LDM:
275 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 276 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 277
252b5132
RH		 278 case BFD_RELOC_16:
279 TRACE ("BFD_RELOC_16");
55fd94b0 280 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 281
282 case BFD_RELOC_16_PCREL:
283 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 284 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 285
286 case BFD_RELOC_8:
287 TRACE ("BFD_RELOC_8");
55fd94b0 288 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 289
290 case BFD_RELOC_8_PCREL:
291 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 292 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 293
13ae64f3
JJ		 294 /* Common with Sun TLS implementation. */
295 case BFD_RELOC_386_TLS_LDO_32:
296 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 297 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 298
299 case BFD_RELOC_386_TLS_IE_32:
300 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 301 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 302
303 case BFD_RELOC_386_TLS_LE_32:
304 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 305 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 306
307 case BFD_RELOC_386_TLS_DTPMOD32:
308 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 309 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 310
311 case BFD_RELOC_386_TLS_DTPOFF32:
312 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 313 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 314
315 case BFD_RELOC_386_TLS_TPOFF32:
316 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 317 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 318
1788fc08
L		 319 case BFD_RELOC_SIZE32:
320 TRACE ("BFD_RELOC_SIZE32");
321 return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset];
322
67a4f2b7
AO		 323 case BFD_RELOC_386_TLS_GOTDESC:
324 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
325 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
326
327 case BFD_RELOC_386_TLS_DESC_CALL:
328 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
329 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
330
331 case BFD_RELOC_386_TLS_DESC:
332 TRACE ("BFD_RELOC_386_TLS_DESC");
333 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
334
cbe950e9
L		 335 case BFD_RELOC_386_IRELATIVE:
336 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 337 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 338
02a86693
L		 339 case BFD_RELOC_386_GOT32X:
340 TRACE ("BFD_RELOC_386_GOT32X");
341 return &elf_howto_table[R_386_GOT32X - R_386_tls_offset];
342
252b5132
RH		 343 case BFD_RELOC_VTABLE_INHERIT:
344 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 345 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 346
347 case BFD_RELOC_VTABLE_ENTRY:
348 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 349 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 350
351 default:
352 break;
353 }
354
355 TRACE ("Unknown");
356 return 0;
357}
358
157090f7
AM		 359static reloc_howto_type *
360elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
361 const char *r_name)
362{
363 unsigned int i;
364
365 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
366 if (elf_howto_table[i].name != NULL
367 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
368 return &elf_howto_table[i];
369
370 return NULL;
371}
372
142411ca
L		 373static reloc_howto_type *
374elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 375{
dc47f327
AM		 376 unsigned int indx;
377
378 if ((indx = r_type) >= R_386_standard
379 && ((indx = r_type - R_386_ext_offset) - R_386_standard
380 >= R_386_ext - R_386_standard)
13ae64f3 381 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520
L		 382 >= R_386_ext2 - R_386_ext)
383 && ((indx = r_type - R_386_vt_offset) - R_386_ext2
384 >= R_386_vt - R_386_ext2))
252b5132 385 {
d003868e
AM		 386 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
387 abfd, (int) r_type);
55fd94b0 388 indx = R_386_NONE;
252b5132 389 }
06614111
NC		 390 /* PR 17512: file: 0f67f69d. */
391 if (elf_howto_table [indx].type != r_type)
392 return NULL;
142411ca
L		 393 return &elf_howto_table[indx];
394}
395
396static void
397elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
398 arelent *cache_ptr,
399 Elf_Internal_Rela *dst)
400{
401 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
402 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 403}
404
405/* Return whether a symbol name implies a local label. The UnixWare
406 2.1 cc generates temporary symbols that start with .X, so we
407 recognize them here. FIXME: do other SVR4 compilers also use .X?.
408 If so, we should move the .X recognition into
409 _bfd_elf_is_local_label_name. */
410
b34976b6 411static bfd_boolean
55fd94b0 412elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 413{
414 if (name[0] == '.' && name[1] == 'X')
b34976b6 415 return TRUE;
252b5132
RH		 416
417 return _bfd_elf_is_local_label_name (abfd, name);
418}
419\f
38701953 420/* Support for core dump NOTE sections. */
61adc1a4 421
b34976b6 422static bfd_boolean
55fd94b0 423elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 424{
425 int offset;
eea6121a 426 size_t size;
38701953 427
61adc1a4 428 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 429 {
61adc1a4
NC		 430 int pr_version = bfd_get_32 (abfd, note->descdata);
431
432 if (pr_version != 1)
433 return FALSE;
434
435 /* pr_cursig */
228e534f 436 elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20);
61adc1a4
NC		 437
438 /* pr_pid */
228e534f 439 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 440
441 /* pr_reg */
442 offset = 28;
eea6121a 443 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 444 }
445 else
446 {
447 switch (note->descsz)
448 {
449 default:
450 return FALSE;
38701953 451
61adc1a4
NC		 452 case 144: /* Linux/i386 */
453 /* pr_cursig */
228e534f 454 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 455
61adc1a4 456 /* pr_pid */
228e534f 457 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 458
61adc1a4
NC		 459 /* pr_reg */
460 offset = 72;
eea6121a 461 size = 68;
38701953 462
61adc1a4
NC		 463 break;
464 }
38701953
AM		 465 }
466
467 /* Make a ".reg/999" section. */
468 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 469 size, note->descpos + offset);
38701953
AM		 470}
471
b34976b6 472static bfd_boolean
55fd94b0 473elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 474{
61adc1a4 475 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 476 {
61adc1a4
NC		 477 int pr_version = bfd_get_32 (abfd, note->descdata);
478
479 if (pr_version != 1)
b34976b6 480 return FALSE;
38701953 481
228e534f 482 elf_tdata (abfd)->core->program
61adc1a4 483 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
228e534f 484 elf_tdata (abfd)->core->command
61adc1a4
NC		 485 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
486 }
487 else
488 {
489 switch (note->descsz)
490 {
491 default:
492 return FALSE;
493
494 case 124: /* Linux/i386 elf_prpsinfo. */
228e534f 495 elf_tdata (abfd)->core->pid
261b8d08 496 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 497 elf_tdata (abfd)->core->program
61adc1a4 498 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 499 elf_tdata (abfd)->core->command
61adc1a4
NC		 500 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
501 }
38701953
AM		 502 }
503
504 /* Note that for some reason, a spurious space is tacked
505 onto the end of the args in some (at least one anyway)
506 implementations, so strip it off if it exists. */
38701953 507 {
228e534f 508 char *command = elf_tdata (abfd)->core->command;
38701953
AM		 509 int n = strlen (command);
510
511 if (0 < n && command[n - 1] == ' ')
512 command[n - 1] = '\0';
513 }
514
b34976b6 515 return TRUE;
38701953
AM		 516}
517\f
518/* Functions for the i386 ELF linker.
519
520 In order to gain some understanding of code in this file without
521 knowing all the intricate details of the linker, note the
522 following:
523
524 Functions named elf_i386_* are called by external routines, other
525 functions are only called locally. elf_i386_* functions appear
526 in this file more or less in the order in which they are called
527 from external routines. eg. elf_i386_check_relocs is called
528 early in the link process, elf_i386_finish_dynamic_sections is
529 one of the last functions. */
530
252b5132
RH		 531
532/* The name of the dynamic interpreter. This is put in the .interp
533 section. */
534
535#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
536
a23b6845
AM		 537/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
538 copying dynamic variables from a shared lib into an app's dynbss
539 section, and instead use a dynamic relocation to point into the
540 shared lib. */
541#define ELIMINATE_COPY_RELOCS 1
542
252b5132
RH		 543/* The size in bytes of an entry in the procedure linkage table. */
544
545#define PLT_ENTRY_SIZE 16
546
547/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 548 this. See the SVR4 ABI i386 supplement to see how this works.
549 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 550
eac338cf 551static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 552{
553 0xff, 0x35, /* pushl contents of address */
554 0, 0, 0, 0, /* replaced with address of .got + 4. */
555 0xff, 0x25, /* jmp indirect */
eac338cf 556 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 557};
558
559/* Subsequent entries in an absolute procedure linkage table look like
560 this. */
561
562static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
563{
564 0xff, 0x25, /* jmp indirect */
565 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
566 0x68, /* pushl immediate */
567 0, 0, 0, 0, /* replaced with offset into relocation table. */
568 0xe9, /* jmp relative */
569 0, 0, 0, 0 /* replaced with offset to start of .plt. */
570};
571
eac338cf
PB		 572/* The first entry in a PIC procedure linkage table look like this.
573 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 574
eac338cf 575static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 576{
577 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 578 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 579};
580
581/* Subsequent entries in a PIC procedure linkage table look like this. */
582
583static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
584{
585 0xff, 0xa3, /* jmp *offset(%ebx) */
586 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
587 0x68, /* pushl immediate */
588 0, 0, 0, 0, /* replaced with offset into relocation table. */
589 0xe9, /* jmp relative */
590 0, 0, 0, 0 /* replaced with offset to start of .plt. */
591};
592
dd7e64d4
L		 593/* Entries in the GOT procedure linkage table look like this. */
594
595static const bfd_byte elf_i386_got_plt_entry[8] =
596{
597 0xff, 0x25, /* jmp indirect */
598 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
599 0x66, 0x90 /* xchg %ax,%ax */
600};
601
602/* Entries in the PIC GOT procedure linkage table look like this. */
603
604static const bfd_byte elf_i386_pic_got_plt_entry[8] =
605{
606 0xff, 0xa3, /* jmp *offset(%ebx) */
607 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
608 0x66, 0x90 /* xchg %ax,%ax */
609};
610
e41b3a13
JJ		 611/* .eh_frame covering the .plt section. */
612
613static const bfd_byte elf_i386_eh_frame_plt[] =
614{
615#define PLT_CIE_LENGTH 20
616#define PLT_FDE_LENGTH 36
617#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
618#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
619 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
620 0, 0, 0, 0, /* CIE ID */
621 1, /* CIE version */
622 'z', 'R', 0, /* Augmentation string */
623 1, /* Code alignment factor */
624 0x7c, /* Data alignment factor */
625 8, /* Return address column */
626 1, /* Augmentation size */
627 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
628 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
629 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
630 DW_CFA_nop, DW_CFA_nop,
631
632 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
633 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
634 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
635 0, 0, 0, 0, /* .plt size goes here */
636 0, /* Augmentation size */
637 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
638 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
639 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
640 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
641 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
642 11, /* Block length */
643 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
644 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
645 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 646 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ		 647 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
648};
649
25e762b9
RM		 650struct elf_i386_plt_layout
651{
652 /* The first entry in an absolute procedure linkage table looks like this. */
653 const bfd_byte *plt0_entry;
654 unsigned int plt0_entry_size;
655
656 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
657 unsigned int plt0_got1_offset;
658 unsigned int plt0_got2_offset;
659
660 /* Later entries in an absolute procedure linkage table look like this. */
661 const bfd_byte *plt_entry;
662 unsigned int plt_entry_size;
663
664 /* Offsets into plt_entry that are to be replaced with... */
665 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
666 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
667 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
668
669 /* Offset into plt_entry where the initial value of the GOT entry points. */
670 unsigned int plt_lazy_offset;
671
672 /* The first entry in a PIC procedure linkage table looks like this. */
673 const bfd_byte *pic_plt0_entry;
674
675 /* Subsequent entries in a PIC procedure linkage table look like this. */
676 const bfd_byte *pic_plt_entry;
677
678 /* .eh_frame covering the .plt section. */
679 const bfd_byte *eh_frame_plt;
680 unsigned int eh_frame_plt_size;
681};
682
683#define GET_PLT_ENTRY_SIZE(abfd) \
684 get_elf_i386_backend_data (abfd)->plt->plt_entry_size
685
686/* These are the standard parameters. */
687static const struct elf_i386_plt_layout elf_i386_plt =
688 {
689 elf_i386_plt0_entry, /* plt0_entry */
690 sizeof (elf_i386_plt0_entry), /* plt0_entry_size */
691 2, /* plt0_got1_offset */
692 8, /* plt0_got2_offset */
693 elf_i386_plt_entry, /* plt_entry */
694 PLT_ENTRY_SIZE, /* plt_entry_size */
695 2, /* plt_got_offset */
696 7, /* plt_reloc_offset */
697 12, /* plt_plt_offset */
698 6, /* plt_lazy_offset */
699 elf_i386_pic_plt0_entry, /* pic_plt0_entry */
700 elf_i386_pic_plt_entry, /* pic_plt_entry */
701 elf_i386_eh_frame_plt, /* eh_frame_plt */
702 sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */
703 };
704\f
705
eac338cf
PB		 706/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
707 for the PLTResolve stub and then for each PLT entry. */
708#define PLTRESOLVE_RELOCS_SHLIB 0
709#define PLTRESOLVE_RELOCS 2
710#define PLT_NON_JUMP_SLOT_RELOCS 2
711
23209a78
RM		 712/* Architecture-specific backend data for i386. */
713
714struct elf_i386_backend_data
715{
25e762b9
RM		 716 /* Parameters describing PLT generation. */
717 const struct elf_i386_plt_layout *plt;
718
23209a78
RM		 719 /* Value used to fill the unused bytes of the first PLT entry. */
720 bfd_byte plt0_pad_byte;
721
722 /* True if the target system is VxWorks. */
723 int is_vxworks;
724};
725
726#define get_elf_i386_backend_data(abfd) \
727 ((const struct elf_i386_backend_data *) \
728 get_elf_backend_data (abfd)->arch_data)
729
730/* These are the standard parameters. */
731static const struct elf_i386_backend_data elf_i386_arch_bed =
732 {
25e762b9 733 &elf_i386_plt, /* plt */
23209a78
RM		 734 0, /* plt0_pad_byte */
735 0, /* is_vxworks */
736 };
737
738#define elf_backend_arch_data &elf_i386_arch_bed
739
aec6b87e
L		 740/* Is a undefined weak symbol which is resolved to 0. Reference to an
741 undefined weak symbol is resolved to 0 when building executable if
742 it isn't dynamic and
743 1. Has non-GOT/non-PLT relocations in text section. Or
744 2. Has no GOT/PLT relocation.
745 */
e62b9723 746#define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, GOT_RELOC, EH) \
aec6b87e
L		 747 ((EH)->elf.root.type == bfd_link_hash_undefweak \
748 && bfd_link_executable (INFO) \
749 && (elf_i386_hash_table (INFO)->interp == NULL \
e62b9723 750 || !(GOT_RELOC) \
aec6b87e
L		 751 || (EH)->has_non_got_reloc \
752 || !(INFO)->dynamic_undefined_weak))
753
252b5132
RH		 754/* i386 ELF linker hash entry. */
755
756struct elf_i386_link_hash_entry
757{
ebe50bae 758 struct elf_link_hash_entry elf;
252b5132 759
0c715baa 760 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 761 struct elf_dyn_relocs *dyn_relocs;
13ae64f3 762
37e55690
JJ		 763#define GOT_UNKNOWN 0
764#define GOT_NORMAL 1
765#define GOT_TLS_GD 2
766#define GOT_TLS_IE 4
767#define GOT_TLS_IE_POS 5
768#define GOT_TLS_IE_NEG 6
769#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO		 770#define GOT_TLS_GDESC 8
771#define GOT_TLS_GD_BOTH_P(type) \
772 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
773#define GOT_TLS_GD_P(type) \
774 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
775#define GOT_TLS_GDESC_P(type) \
776 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
777#define GOT_TLS_GD_ANY_P(type) \
778 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 779 unsigned char tls_type;
67a4f2b7 780
d5597ebc
L		 781 /* Symbol is referenced by R_386_GOTOFF relocation. */
782 unsigned int gotoff_ref : 1;
783
aec6b87e
L		 784 /* Symbol has GOT or PLT relocations. */
785 unsigned int has_got_reloc : 1;
786
787 /* Symbol has non-GOT/non-PLT relocations in text sections. */
788 unsigned int has_non_got_reloc : 1;
789
6eaa7fb5
L		 790 /* 0: symbol isn't ___tls_get_addr.
791 1: symbol is ___tls_get_addr.
792 2: symbol is unknown. */
793 unsigned int tls_get_addr : 2;
794
04ebc307
L		 795 /* Reference count of C/C++ function pointer relocations in read-write
796 section which can be resolved at run-time. */
797 bfd_signed_vma func_pointer_refcount;
798
dd7e64d4
L		 799 /* Information about the GOT PLT entry. Filled when there are both
800 GOT and PLT relocations against the same function. */
801 union gotplt_union plt_got;
802
67a4f2b7
AO		 803 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
804 starting at the end of the jump table. */
805 bfd_vma tlsdesc_got;
13ae64f3
JJ		 806};
807
808#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
809
810struct elf_i386_obj_tdata
811{
812 struct elf_obj_tdata root;
813
814 /* tls_type for each local got entry. */
815 char *local_got_tls_type;
67a4f2b7
AO		 816
817 /* GOTPLT entries for TLS descriptors. */
818 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 819};
820
13ae64f3
JJ		 821#define elf_i386_tdata(abfd) \
822 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
823
824#define elf_i386_local_got_tls_type(abfd) \
825 (elf_i386_tdata (abfd)->local_got_tls_type)
826
67a4f2b7
AO		 827#define elf_i386_local_tlsdesc_gotent(abfd) \
828 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
829
0ffa91dd
NC		 830#define is_i386_elf(bfd) \
831 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
832 && elf_tdata (bfd) != NULL \
4dfe6ac6 833 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 834
b34976b6 835static bfd_boolean
55fd94b0 836elf_i386_mkobject (bfd *abfd)
13ae64f3 837{
0ffa91dd 838 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 839 I386_ELF_DATA);
13ae64f3 840}
cedb70c5 841
252b5132
RH		 842/* i386 ELF linker hash table. */
843
844struct elf_i386_link_hash_table
845{
ebe50bae 846 struct elf_link_hash_table elf;
252b5132 847
6725bdbf 848 /* Short-cuts to get to dynamic linker sections. */
aec6b87e 849 asection *interp;
6725bdbf
AM		 850 asection *sdynbss;
851 asection *srelbss;
e41b3a13 852 asection *plt_eh_frame;
dd7e64d4 853 asection *plt_got;
9635fe29 854
4dfe6ac6
NC		 855 union
856 {
13ae64f3
JJ		 857 bfd_signed_vma refcount;
858 bfd_vma offset;
859 } tls_ldm_got;
860
67a4f2b7
AO		 861 /* The amount of space used by the reserved portion of the sgotplt
862 section, plus whatever space is used by the jump slots. */
863 bfd_vma sgotplt_jump_table_size;
864
87d72d41
AM		 865 /* Small local sym cache. */
866 struct sym_cache sym_cache;
9f03412a
AO		 867
868 /* _TLS_MODULE_BASE_ symbol. */
869 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 870
871 /* Used by local STT_GNU_IFUNC symbols. */
872 htab_t loc_hash_table;
4dfe6ac6
NC		 873 void * loc_hash_memory;
874
875 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
876 asection *srelplt2;
877
4dfe6ac6
NC		 878 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
879 bfd_vma next_tls_desc_index;
e1f98742
L		 880
881 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
882 bfd_vma next_jump_slot_index;
883
884 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
885 bfd_vma next_irelative_index;
2df3368d
L		 886
887 /* TRUE if there are dynamic relocs against IFUNC symbols that apply
888 to read-only sections. */
889 bfd_boolean readonly_dynrelocs_against_ifunc;
6725bdbf 890};
252b5132
RH		 891
892/* Get the i386 ELF linker hash table from a link_info structure. */
893
894#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 895 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
896 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 897
67a4f2b7 898#define elf_i386_compute_jump_table_size(htab) \
998d811a 899 ((htab)->elf.srelplt->reloc_count * 4)
67a4f2b7 900
252b5132
RH		 901/* Create an entry in an i386 ELF linker hash table. */
902
903static struct bfd_hash_entry *
eb4ff4d6
L		 904elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
905 struct bfd_hash_table *table,
906 const char *string)
252b5132 907{
252b5132
RH		 908 /* Allocate the structure if it has not already been allocated by a
909 subclass. */
ebe50bae
AM		 910 if (entry == NULL)
911 {
a50b1753
NC		 912 entry = (struct bfd_hash_entry *)
913 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 914 if (entry == NULL)
915 return entry;
916 }
252b5132
RH		 917
918 /* Call the allocation method of the superclass. */
ebe50bae
AM		 919 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
920 if (entry != NULL)
252b5132 921 {
ebe50bae
AM		 922 struct elf_i386_link_hash_entry *eh;
923
924 eh = (struct elf_i386_link_hash_entry *) entry;
925 eh->dyn_relocs = NULL;
13ae64f3 926 eh->tls_type = GOT_UNKNOWN;
d5597ebc 927 eh->gotoff_ref = 0;
aec6b87e
L		 928 eh->has_got_reloc = 0;
929 eh->has_non_got_reloc = 0;
6eaa7fb5 930 eh->tls_get_addr = 2;
04ebc307 931 eh->func_pointer_refcount = 0;
dd7e64d4 932 eh->plt_got.offset = (bfd_vma) -1;
67a4f2b7 933 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 934 }
935
ebe50bae 936 return entry;
252b5132
RH		 937}
938
c25bc9fc
L		 939/* Compute a hash of a local hash entry. We use elf_link_hash_entry
940 for local symbol so that we can handle local STT_GNU_IFUNC symbols
941 as global symbol. We reuse indx and dynstr_index for local symbol
942 hash since they aren't used by global symbols in this backend. */
943
944static hashval_t
945elf_i386_local_htab_hash (const void *ptr)
946{
947 struct elf_link_hash_entry *h
948 = (struct elf_link_hash_entry *) ptr;
d2149d72 949 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 950}
951
952/* Compare local hash entries. */
953
954static int
955elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
956{
957 struct elf_link_hash_entry *h1
958 = (struct elf_link_hash_entry *) ptr1;
959 struct elf_link_hash_entry *h2
960 = (struct elf_link_hash_entry *) ptr2;
961
962 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
963}
964
965/* Find and/or create a hash entry for local symbol. */
966
967static struct elf_link_hash_entry *
968elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
969 bfd *abfd, const Elf_Internal_Rela *rel,
970 bfd_boolean create)
971{
972 struct elf_i386_link_hash_entry e, *ret;
973 asection *sec = abfd->sections;
d2149d72
L		 974 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
975 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 976 void **slot;
977
978 e.elf.indx = sec->id;
979 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
980 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
981 create ? INSERT : NO_INSERT);
982
983 if (!slot)
984 return NULL;
985
986 if (*slot)
987 {
988 ret = (struct elf_i386_link_hash_entry *) *slot;
989 return &ret->elf;
990 }
991
992 ret = (struct elf_i386_link_hash_entry *)
993 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
994 sizeof (struct elf_i386_link_hash_entry));
995 if (ret)
996 {
997 memset (ret, 0, sizeof (*ret));
998 ret->elf.indx = sec->id;
999 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
1000 ret->elf.dynindx = -1;
04ebc307 1001 ret->func_pointer_refcount = 0;
dd7e64d4 1002 ret->plt_got.offset = (bfd_vma) -1;
c25bc9fc
L		 1003 *slot = ret;
1004 }
1005 return &ret->elf;
1006}
1007
68faa637
AM		 1008/* Destroy an i386 ELF linker hash table. */
1009
1010static void
d495ab0d 1011elf_i386_link_hash_table_free (bfd *obfd)
68faa637
AM		 1012{
1013 struct elf_i386_link_hash_table *htab
d495ab0d 1014 = (struct elf_i386_link_hash_table *) obfd->link.hash;
68faa637
AM		 1015
1016 if (htab->loc_hash_table)
1017 htab_delete (htab->loc_hash_table);
1018 if (htab->loc_hash_memory)
1019 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
d495ab0d 1020 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 1021}
1022
252b5132
RH		 1023/* Create an i386 ELF linker hash table. */
1024
1025static struct bfd_link_hash_table *
55fd94b0 1026elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 1027{
1028 struct elf_i386_link_hash_table *ret;
dc810e39 1029 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 1030
7bf52ea2 1031 ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt);
ebe50bae 1032 if (ret == NULL)
252b5132
RH		 1033 return NULL;
1034
eb4ff4d6
L		 1035 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
1036 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 1037 sizeof (struct elf_i386_link_hash_entry),
1038 I386_ELF_DATA))
252b5132 1039 {
e2d34d7d 1040 free (ret);
252b5132
RH		 1041 return NULL;
1042 }
1043
c25bc9fc
L		 1044 ret->loc_hash_table = htab_try_create (1024,
1045 elf_i386_local_htab_hash,
1046 elf_i386_local_htab_eq,
1047 NULL);
1048 ret->loc_hash_memory = objalloc_create ();
1049 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1050 {
d495ab0d 1051 elf_i386_link_hash_table_free (abfd);
c25bc9fc
L		 1052 return NULL;
1053 }
d495ab0d 1054 ret->elf.root.hash_table_free = elf_i386_link_hash_table_free;
c25bc9fc 1055
ebe50bae 1056 return &ret->elf.root;
252b5132
RH		 1057}
1058
6725bdbf
AM		 1059/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
1060 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
1061 hash table. */
1062
b34976b6 1063static bfd_boolean
55fd94b0 1064elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 1065{
1066 struct elf_i386_link_hash_table *htab;
1067
6725bdbf 1068 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 1069 return FALSE;
6725bdbf 1070
6de2ae4a 1071 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1072 if (htab == NULL)
1073 return FALSE;
1074
493f652c
L		 1075 /* Set the contents of the .interp section to the interpreter. */
1076 if (bfd_link_executable (info) && !info->nointerp)
1077 {
1078 asection *s = bfd_get_linker_section (dynobj, ".interp");
1079 if (s == NULL)
1080 abort ();
1081 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1082 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1083 htab->interp = s;
1084 }
1085
3d4d4302 1086 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
d5597ebc 1087 if (!htab->sdynbss)
6725bdbf
AM		 1088 abort ();
1089
0e1862bb 1090 if (bfd_link_executable (info))
d5597ebc
L		 1091 {
1092 /* Always allow copy relocs for building executables. */
1093 asection *s = bfd_get_linker_section (dynobj, ".rel.bss");
1094 if (s == NULL)
1095 {
1096 const struct elf_backend_data *bed = get_elf_backend_data (dynobj);
1097 s = bfd_make_section_anyway_with_flags (dynobj,
1098 ".rel.bss",
1099 (bed->dynamic_sec_flags
1100 | SEC_READONLY));
1101 if (s == NULL
1102 || ! bfd_set_section_alignment (dynobj, s,
1103 bed->s->log_file_align))
1104 return FALSE;
1105 }
1106 htab->srelbss = s;
1107 }
1108
23209a78 1109 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1110 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1111 &htab->srelplt2))
711de32c 1112 return FALSE;
eac338cf 1113
e41b3a13 1114 if (!info->no_ld_generated_unwind_info
2fe0fd06 1115 && htab->plt_eh_frame == NULL
e4de50d4 1116 && htab->elf.splt != NULL)
e41b3a13 1117 {
bbf96e4e
L		 1118 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1119 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1120 | SEC_LINKER_CREATED);
e41b3a13 1121 htab->plt_eh_frame
bbf96e4e 1122 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ		 1123 if (htab->plt_eh_frame == NULL
1124 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1125 return FALSE;
e41b3a13
JJ		 1126 }
1127
b34976b6 1128 return TRUE;
6725bdbf
AM		 1129}
1130
ebe50bae
AM		 1131/* Copy the extra info we tack onto an elf_link_hash_entry. */
1132
51b64d56 1133static void
fcfa13d2 1134elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1135 struct elf_link_hash_entry *dir,
1136 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1137{
1138 struct elf_i386_link_hash_entry *edir, *eind;
1139
1140 edir = (struct elf_i386_link_hash_entry *) dir;
1141 eind = (struct elf_i386_link_hash_entry *) ind;
1142
bbd7ec4a 1143 if (eind->dyn_relocs != NULL)
ebe50bae 1144 {
bbd7ec4a
AM		 1145 if (edir->dyn_relocs != NULL)
1146 {
e03a8ed8
L		 1147 struct elf_dyn_relocs **pp;
1148 struct elf_dyn_relocs *p;
bbd7ec4a 1149
fcfa13d2 1150 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1151 list. Merge any entries against the same section. */
1152 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1153 {
e03a8ed8 1154 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1155
1156 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1157 if (q->sec == p->sec)
1158 {
1159 q->pc_count += p->pc_count;
1160 q->count += p->count;
1161 *pp = p->next;
1162 break;
1163 }
1164 if (q == NULL)
1165 pp = &p->next;
1166 }
1167 *pp = edir->dyn_relocs;
1168 }
1169
ebe50bae
AM		 1170 edir->dyn_relocs = eind->dyn_relocs;
1171 eind->dyn_relocs = NULL;
1172 }
ebe50bae 1173
cd67d266
JJ		 1174 if (ind->root.type == bfd_link_hash_indirect
1175 && dir->got.refcount <= 0)
1176 {
1177 edir->tls_type = eind->tls_type;
1178 eind->tls_type = GOT_UNKNOWN;
1179 }
81848ca0 1180
d5597ebc
L		 1181 /* Copy gotoff_ref so that elf_i386_adjust_dynamic_symbol will
1182 generate a R_386_COPY reloc. */
1183 edir->gotoff_ref |= eind->gotoff_ref;
1184
aec6b87e
L		 1185 edir->has_got_reloc |= eind->has_got_reloc;
1186 edir->has_non_got_reloc |= eind->has_non_got_reloc;
1187
81848ca0
AM		 1188 if (ELIMINATE_COPY_RELOCS
1189 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1190 && dir->dynamic_adjusted)
1191 {
1192 /* If called to transfer flags for a weakdef during processing
1193 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1194 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1195 dir->ref_dynamic |= ind->ref_dynamic;
1196 dir->ref_regular |= ind->ref_regular;
1197 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1198 dir->needs_plt |= ind->needs_plt;
1199 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1200 }
81848ca0 1201 else
04ebc307
L		 1202 {
1203 if (eind->func_pointer_refcount > 0)
1204 {
1205 edir->func_pointer_refcount += eind->func_pointer_refcount;
1206 eind->func_pointer_refcount = 0;
1207 }
1208
1209 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1210 }
ebe50bae
AM		 1211}
1212
142411ca
L		 1213/* Return TRUE if the TLS access code sequence support transition
1214 from R_TYPE. */
1215
1216static bfd_boolean
bedfd056 1217elf_i386_check_tls_transition (asection *sec,
142411ca
L		 1218 bfd_byte *contents,
1219 Elf_Internal_Shdr *symtab_hdr,
1220 struct elf_link_hash_entry **sym_hashes,
1221 unsigned int r_type,
1222 const Elf_Internal_Rela *rel,
1223 const Elf_Internal_Rela *relend)
13ae64f3 1224{
6eaa7fb5 1225 unsigned int val, type, reg;
142411ca
L		 1226 unsigned long r_symndx;
1227 struct elf_link_hash_entry *h;
1228 bfd_vma offset;
6eaa7fb5
L		 1229 bfd_byte *call;
1230 bfd_boolean indirect_call, tls_get_addr;
142411ca 1231
142411ca 1232 offset = rel->r_offset;
13ae64f3 1233 switch (r_type)
142411ca
L		 1234 {
1235 case R_386_TLS_GD:
1236 case R_386_TLS_LDM:
1237 if (offset < 2 || (rel + 1) >= relend)
1238 return FALSE;
1239
6eaa7fb5
L		 1240 indirect_call = FALSE;
1241 call = contents + offset + 4;
1242 val = *(call - 5);
1243 type = *(call - 6);
142411ca
L		 1244 if (r_type == R_386_TLS_GD)
1245 {
09e8c3bf 1246 /* Check transition from GD access model. Only
6eaa7fb5
L		 1247 leal foo@tlsgd(,%ebx,1), %eax
1248 call ___tls_get_addr@PLT
1249 or
1250 leal foo@tlsgd(%ebx) %eax
1251 call ___tls_get_addr@PLT
1252 nop
1253 or
1254 leal foo@tlsgd(%reg), %eax
1255 call *___tls_get_addr@GOT(%reg)
1256 which may be converted to
1257 addr32 call ___tls_get_addr
142411ca 1258 can transit to different access model. */
6eaa7fb5
L		 1259 if ((offset + 10) > sec->size
1260 || (type != 0x8d && type != 0x04))
142411ca
L		 1261 return FALSE;
1262
142411ca
L		 1263 if (type == 0x04)
1264 {
6eaa7fb5
L		 1265 /* leal foo@tlsgd(,%ebx,1), %eax
1266 call ___tls_get_addr@PLT */
142411ca
L		 1267 if (offset < 3)
1268 return FALSE;
1269
6eaa7fb5
L		 1270 if (*(call - 7) != 0x8d
1271 || val != 0x1d
1272 || call[0] != 0xe8)
142411ca
L		 1273 return FALSE;
1274 }
1275 else
1276 {
6eaa7fb5
L		 1277 /* This must be
1278 leal foo@tlsgd(%ebx), %eax
1279 call ___tls_get_addr@PLT
1280 nop
1281 or
1282 leal foo@tlsgd(%reg), %eax
1283 call *___tls_get_addr@GOT(%reg)
1284 which may be converted to
1285 addr32 call ___tls_get_addr
1286
1287 %eax can't be used as the GOT base register since it
1288 is used to pass parameter to ___tls_get_addr. */
1289 reg = val & 7;
1290 if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0)
142411ca
L		 1291 return FALSE;
1292
6eaa7fb5
L		 1293 indirect_call = call[0] == 0xff;
1294 if (!(reg == 3 && call[0] == 0xe8 && call[5] == 0x90)
1295 && !(call[0] == 0x67 && call[1] == 0xe8)
1296 && !(indirect_call
1297 && (call[1] & 0xf8) == 0x90
1298 && (call[1] & 0x7) == reg))
142411ca
L		 1299 return FALSE;
1300 }
1301 }
1302 else
1303 {
1304 /* Check transition from LD access model. Only
6eaa7fb5
L		 1305 leal foo@tlsldm(%ebx), %eax
1306 call ___tls_get_addr@PLT
1307 or
1308 leal foo@tlsldm(%reg), %eax
1309 call *___tls_get_addr@GOT(%reg)
1310 which may be converted to
1311 addr32 call ___tls_get_addr
142411ca
L		 1312 can transit to different access model. */
1313 if (type != 0x8d || (offset + 9) > sec->size)
1314 return FALSE;
1315
6eaa7fb5
L		 1316 /* %eax can't be used as the GOT base register since it is
1317 used to pass parameter to ___tls_get_addr. */
1318 reg = val & 7;
1319 if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0)
142411ca 1320 return FALSE;
142411ca 1321
6eaa7fb5
L		 1322 indirect_call = call[0] == 0xff;
1323 if (!(reg == 3 && call[0] == 0xe8)
1324 && !(call[0] == 0x67 && call[1] == 0xe8)
1325 && !(indirect_call
1326 && (call[1] & 0xf8) == 0x90
1327 && (call[1] & 0x7) == reg))
1328 return FALSE;
1329 }
142411ca
L		 1330
1331 r_symndx = ELF32_R_SYM (rel[1].r_info);
1332 if (r_symndx < symtab_hdr->sh_info)
1333 return FALSE;
1334
6eaa7fb5 1335 tls_get_addr = FALSE;
142411ca 1336 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6eaa7fb5
L		 1337 if (h != NULL && h->root.root.string != NULL)
1338 {
1339 struct elf_i386_link_hash_entry *eh
1340 = (struct elf_i386_link_hash_entry *) h;
1341 tls_get_addr = eh->tls_get_addr == 1;
1342 if (eh->tls_get_addr > 1)
1343 {
1344 /* Use strncmp to check ___tls_get_addr since
1345 ___tls_get_addr may be versioned. */
1346 if (strncmp (h->root.root.string, "___tls_get_addr", 15)
1347 == 0)
1348 {
1349 eh->tls_get_addr = 1;
1350 tls_get_addr = TRUE;
1351 }
1352 else
1353 eh->tls_get_addr = 0;
1354 }
1355 }
1356
1357 if (!tls_get_addr)
1358 return FALSE;
1359 else if (indirect_call)
1360 return (ELF32_R_TYPE (rel[1].r_info) == R_386_GOT32X);
1361 else
1362 return (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1363 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
142411ca
L		 1364
1365 case R_386_TLS_IE:
1366 /* Check transition from IE access model:
1367 movl foo@indntpoff(%rip), %eax
1368 movl foo@indntpoff(%rip), %reg
1369 addl foo@indntpoff(%rip), %reg
1370 */
1371
1372 if (offset < 1 || (offset + 4) > sec->size)
1373 return FALSE;
1374
1375 /* Check "movl foo@tpoff(%rip), %eax" first. */
1376 val = bfd_get_8 (abfd, contents + offset - 1);
1377 if (val == 0xa1)
1378 return TRUE;
1379
1380 if (offset < 2)
1381 return FALSE;
1382
1383 /* Check movl|addl foo@tpoff(%rip), %reg. */
1384 type = bfd_get_8 (abfd, contents + offset - 2);
1385 return ((type == 0x8b || type == 0x03)
1386 && (val & 0xc7) == 0x05);
1387
1388 case R_386_TLS_GOTIE:
1389 case R_386_TLS_IE_32:
1390 /* Check transition from {IE_32,GOTIE} access model:
1391 subl foo@{tpoff,gontoff}(%reg1), %reg2
1392 movl foo@{tpoff,gontoff}(%reg1), %reg2
1393 addl foo@{tpoff,gontoff}(%reg1), %reg2
1394 */
1395
1396 if (offset < 2 || (offset + 4) > sec->size)
1397 return FALSE;
1398
1399 val = bfd_get_8 (abfd, contents + offset - 1);
1400 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1401 return FALSE;
1402
1403 type = bfd_get_8 (abfd, contents + offset - 2);
1404 return type == 0x8b || type == 0x2b || type == 0x03;
1405
1406 case R_386_TLS_GOTDESC:
1407 /* Check transition from GDesc access model:
1408 leal x@tlsdesc(%ebx), %eax
1409
1410 Make sure it's a leal adding ebx to a 32-bit offset
1411 into any register, although it's probably almost always
1412 going to be eax. */
1413
1414 if (offset < 2 || (offset + 4) > sec->size)
1415 return FALSE;
1416
1417 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1418 return FALSE;
1419
1420 val = bfd_get_8 (abfd, contents + offset - 1);
1421 return (val & 0xc7) == 0x83;
1422
1423 case R_386_TLS_DESC_CALL:
1424 /* Check transition from GDesc access model:
6eaa7fb5 1425 call *x@tlsdesc(%eax)
142411ca
L		 1426 */
1427 if (offset + 2 <= sec->size)
1428 {
6eaa7fb5
L		 1429 /* Make sure that it's a call *x@tlsdesc(%eax). */
1430 call = contents + offset;
1431 return call[0] == 0xff && call[1] == 0x10;
142411ca
L		 1432 }
1433
1434 return FALSE;
1435
1436 default:
1437 abort ();
1438 }
1439}
1440
1441/* Return TRUE if the TLS access transition is OK or no transition
1442 will be performed. Update R_TYPE if there is a transition. */
1443
1444static bfd_boolean
1445elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1446 asection *sec, bfd_byte *contents,
1447 Elf_Internal_Shdr *symtab_hdr,
1448 struct elf_link_hash_entry **sym_hashes,
1449 unsigned int *r_type, int tls_type,
1450 const Elf_Internal_Rela *rel,
1451 const Elf_Internal_Rela *relend,
4c544807 1452 struct elf_link_hash_entry *h,
bedfd056
L		 1453 unsigned long r_symndx,
1454 bfd_boolean from_relocate_section)
142411ca
L		 1455{
1456 unsigned int from_type = *r_type;
1457 unsigned int to_type = from_type;
1458 bfd_boolean check = TRUE;
1459
bb1cb422
L		 1460 /* Skip TLS transition for functions. */
1461 if (h != NULL
1462 && (h->type == STT_FUNC
1463 || h->type == STT_GNU_IFUNC))
1464 return TRUE;
1465
142411ca 1466 switch (from_type)
13ae64f3
JJ		 1467 {
1468 case R_386_TLS_GD:
67a4f2b7
AO		 1469 case R_386_TLS_GOTDESC:
1470 case R_386_TLS_DESC_CALL:
13ae64f3 1471 case R_386_TLS_IE_32:
37e55690
JJ		 1472 case R_386_TLS_IE:
1473 case R_386_TLS_GOTIE:
0e1862bb 1474 if (bfd_link_executable (info))
142411ca
L		 1475 {
1476 if (h == NULL)
1477 to_type = R_386_TLS_LE_32;
1478 else if (from_type != R_386_TLS_IE
1479 && from_type != R_386_TLS_GOTIE)
1480 to_type = R_386_TLS_IE_32;
1481 }
1482
bedfd056
L		 1483 /* When we are called from elf_i386_relocate_section, there may
1484 be additional transitions based on TLS_TYPE. */
1485 if (from_relocate_section)
142411ca
L		 1486 {
1487 unsigned int new_to_type = to_type;
1488
0e1862bb 1489 if (bfd_link_executable (info)
142411ca
L		 1490 && h != NULL
1491 && h->dynindx == -1
1492 && (tls_type & GOT_TLS_IE))
1493 new_to_type = R_386_TLS_LE_32;
1494
1495 if (to_type == R_386_TLS_GD
1496 || to_type == R_386_TLS_GOTDESC
1497 || to_type == R_386_TLS_DESC_CALL)
1498 {
1499 if (tls_type == GOT_TLS_IE_POS)
1500 new_to_type = R_386_TLS_GOTIE;
1501 else if (tls_type & GOT_TLS_IE)
1502 new_to_type = R_386_TLS_IE_32;
1503 }
1504
1505 /* We checked the transition before when we were called from
1506 elf_i386_check_relocs. We only want to check the new
1507 transition which hasn't been checked before. */
1508 check = new_to_type != to_type && from_type == to_type;
1509 to_type = new_to_type;
1510 }
1511
1512 break;
1513
13ae64f3 1514 case R_386_TLS_LDM:
0e1862bb 1515 if (bfd_link_executable (info))
142411ca
L		 1516 to_type = R_386_TLS_LE_32;
1517 break;
1518
1519 default:
1520 return TRUE;
1521 }
1522
1523 /* Return TRUE if there is no transition. */
1524 if (from_type == to_type)
1525 return TRUE;
1526
1527 /* Check if the transition can be performed. */
1528 if (check
bedfd056 1529 && ! elf_i386_check_tls_transition (sec, contents,
142411ca
L		 1530 symtab_hdr, sym_hashes,
1531 from_type, rel, relend))
1532 {
2f629d23 1533 reloc_howto_type *from, *to;
4c544807 1534 const char *name;
142411ca
L		 1535
1536 from = elf_i386_rtype_to_howto (abfd, from_type);
1537 to = elf_i386_rtype_to_howto (abfd, to_type);
1538
4c544807
L		 1539 if (h)
1540 name = h->root.root.string;
1541 else
1542 {
4c544807 1543 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1544
4c544807 1545 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1546 if (htab == NULL)
1547 name = "*unknown*";
1548 else
1549 {
1550 Elf_Internal_Sym *isym;
1551
1552 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1553 abfd, r_symndx);
1554 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1555 }
4c544807
L		 1556 }
1557
142411ca
L		 1558 (*_bfd_error_handler)
1559 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1560 "in section `%A' failed"),
4c544807 1561 abfd, sec, from->name, to->name, name,
142411ca
L		 1562 (unsigned long) rel->r_offset);
1563 bfd_set_error (bfd_error_bad_value);
1564 return FALSE;
13ae64f3
JJ		 1565 }
1566
142411ca
L		 1567 *r_type = to_type;
1568 return TRUE;
13ae64f3
JJ		 1569}
1570
c175a657
L		 1571/* With the local symbol, foo, we convert
1572 mov foo@GOT[(%reg1)], %reg2
1573 to
1574 lea foo[@GOTOFF(%reg1)], %reg2
1575 and convert
1576 call/jmp *foo@GOT[(%reg)]
1577 to
1578 nop call foo/jmp foo nop
1579 When PIC is false, convert
1580 test %reg1, foo@GOT[(%reg2)]
1581 to
1582 test $foo, %reg1
1583 and convert
1584 binop foo@GOT[(%reg1)], %reg2
1585 to
1586 binop $foo, %reg2
1587 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1588 instructions. */
1589
1590static
1591bfd_boolean
1592elf_i386_convert_load_reloc (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
1593 bfd_byte *contents,
1594 Elf_Internal_Rela *irel,
1595 struct elf_link_hash_entry *h,
1596 bfd_boolean *converted,
1597 struct bfd_link_info *link_info)
1598{
1599 struct elf_i386_link_hash_table *htab;
1600 unsigned int opcode;
1601 unsigned int modrm;
1602 bfd_boolean baseless;
1603 Elf_Internal_Sym *isym;
1604 unsigned int addend;
1605 unsigned int nop;
1606 bfd_vma nop_offset;
1607 bfd_boolean is_pic;
1608 bfd_boolean to_reloc_32;
1609 unsigned int r_type;
1610 unsigned int r_symndx;
1611 bfd_vma roff = irel->r_offset;
1612
1613 if (roff < 2)
1614 return TRUE;
1615
7d4d9709 1616 /* Addend for R_386_GOT32X relocations must be 0. */
c175a657
L		 1617 addend = bfd_get_32 (abfd, contents + roff);
1618 if (addend != 0)
1619 return TRUE;
1620
1621 htab = elf_i386_hash_table (link_info);
1622 is_pic = bfd_link_pic (link_info);
1623
1624 r_type = ELF32_R_TYPE (irel->r_info);
1625 r_symndx = ELF32_R_SYM (irel->r_info);
1626
1627 modrm = bfd_get_8 (abfd, contents + roff - 1);
1628 baseless = (modrm & 0xc7) == 0x5;
1629
7d4d9709 1630 if (baseless && is_pic)
c175a657
L		 1631 {
1632 /* For PIC, disallow R_386_GOT32X without a base register
7d4d9709 1633 since we don't know what the GOT base is. */
c175a657
L		 1634 const char *name;
1635
1636 if (h == NULL)
1637 {
1638 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd,
1639 r_symndx);
1640 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1641 }
1642 else
1643 name = h->root.root.string;
1644
1645 (*_bfd_error_handler)
1646 (_("%B: direct GOT relocation R_386_GOT32X against `%s' without base register can not be used when making a shared object"),
1647 abfd, name);
1648 return FALSE;
1649 }
1650
1651 opcode = bfd_get_8 (abfd, contents + roff - 2);
1652
c175a657
L		 1653 /* Convert to R_386_32 if PIC is false or there is no base
1654 register. */
1655 to_reloc_32 = !is_pic || baseless;
1656
7d4d9709
L		 1657 /* Try to convert R_386_GOT32X. Get the symbol referred to by the
1658 reloc. */
c175a657
L		 1659 if (h == NULL)
1660 {
1661 if (opcode == 0x0ff)
1662 /* Convert "call/jmp *foo@GOT[(%reg)]". */
1663 goto convert_branch;
1664 else
1665 /* Convert "mov foo@GOT[(%reg1)], %reg2",
1666 "test %reg1, foo@GOT(%reg2)" and
1667 "binop foo@GOT[(%reg1)], %reg2". */
1668 goto convert_load;
1669 }
1670
1671 /* Undefined weak symbol is only bound locally in executable
1672 and its reference is resolved as 0. */
1673 if (UNDEFINED_WEAK_RESOLVED_TO_ZERO (link_info, TRUE,
1674 elf_i386_hash_entry (h)))
1675 {
1676 if (opcode == 0xff)
1677 {
1678 /* No direct branch to 0 for PIC. */
1679 if (is_pic)
1680 return TRUE;
1681 else
1682 goto convert_branch;
1683 }
1684 else
1685 {
1686 /* We can convert load of address 0 to R_386_32. */
1687 to_reloc_32 = TRUE;
1688 goto convert_load;
1689 }
1690 }
1691
1692 if (opcode == 0xff)
1693 {
1694 /* We have "call/jmp *foo@GOT[(%reg)]". */
1695 if ((h->root.type == bfd_link_hash_defined
1696 || h->root.type == bfd_link_hash_defweak)
1697 && SYMBOL_REFERENCES_LOCAL (link_info, h))
1698 {
1699 /* The function is locally defined. */
1700convert_branch:
1701 /* Convert R_386_GOT32X to R_386_PC32. */
1702 if (modrm == 0x15 || (modrm & 0xf8) == 0x90)
1703 {
6eaa7fb5
L		 1704 struct elf_i386_link_hash_entry *eh
1705 = (struct elf_i386_link_hash_entry *) h;
1706
c175a657
L		 1707 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
1708 is a nop prefix. */
1709 modrm = 0xe8;
6eaa7fb5
L		 1710 /* To support TLS optimization, always use addr32 prefix
1711 for "call *___tls_get_addr@GOT(%reg)". */
1712 if (eh && eh->tls_get_addr == 1)
c175a657 1713 {
6eaa7fb5
L		 1714 nop = 0x67;
1715 nop_offset = irel->r_offset - 2;
c175a657
L		 1716 }
1717 else
6eaa7fb5
L		 1718 {
1719 nop = link_info->call_nop_byte;
1720 if (link_info->call_nop_as_suffix)
1721 {
1722 nop_offset = roff + 3;
1723 irel->r_offset -= 1;
1724 }
1725 else
1726 nop_offset = roff - 2;
1727 }
c175a657
L		 1728 }
1729 else
1730 {
1731 /* Convert to "jmp foo nop". */
1732 modrm = 0xe9;
1733 nop = NOP_OPCODE;
1734 nop_offset = roff + 3;
1735 irel->r_offset -= 1;
1736 }
1737
1738 bfd_put_8 (abfd, nop, contents + nop_offset);
1739 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
1740 /* When converting to PC-relative relocation, we
1741 need to adjust addend by -4. */
1742 bfd_put_32 (abfd, -4, contents + irel->r_offset);
1743 irel->r_info = ELF32_R_INFO (r_symndx, R_386_PC32);
1744
1745 *converted = TRUE;
1746 }
1747 }
1748 else
1749 {
1750 /* We have "mov foo@GOT[(%re1g)], %reg2",
1751 "test %reg1, foo@GOT(%reg2)" and
1752 "binop foo@GOT[(%reg1)], %reg2".
1753
1754 Avoid optimizing _DYNAMIC since ld.so may use its
1755 link-time address. */
1756 if (h == htab->elf.hdynamic)
1757 return TRUE;
1758
1759 /* def_regular is set by an assignment in a linker script in
1760 bfd_elf_record_link_assignment. */
1761 if ((h->def_regular
1762 || h->root.type == bfd_link_hash_defined
1763 || h->root.type == bfd_link_hash_defweak)
1764 && SYMBOL_REFERENCES_LOCAL (link_info, h))
1765 {
1766convert_load:
1767 if (opcode == 0x8b)
1768 {
1769 if (to_reloc_32)
1770 {
1771 /* Convert "mov foo@GOT[(%reg1)], %reg2" to
1772 "mov $foo, %reg2" with R_386_32. */
1773 r_type = R_386_32;
1774 modrm = 0xc0 | (modrm & 0x38) >> 3;
1775 bfd_put_8 (abfd, modrm, contents + roff - 1);
1776 opcode = 0xc7;
1777 }
1778 else
1779 {
1780 /* Convert "mov foo@GOT(%reg1), %reg2" to
1781 "lea foo@GOTOFF(%reg1), %reg2". */
1782 r_type = R_386_GOTOFF;
1783 opcode = 0x8d;
1784 }
1785 }
1786 else
1787 {
1788 /* Only R_386_32 is supported. */
1789 if (!to_reloc_32)
1790 return TRUE;
1791
1792 if (opcode == 0x85)
1793 {
1794 /* Convert "test %reg1, foo@GOT(%reg2)" to
1795 "test $foo, %reg1". */
1796 modrm = 0xc0 | (modrm & 0x38) >> 3;
1797 opcode = 0xf7;
1798 }
1799 else
1800 {
1801 /* Convert "binop foo@GOT(%reg1), %reg2" to
1802 "binop $foo, %reg2". */
1803 modrm = (0xc0
1804 | (modrm & 0x38) >> 3
1805 | (opcode & 0x3c));
1806 opcode = 0x81;
1807 }
1808 bfd_put_8 (abfd, modrm, contents + roff - 1);
1809 r_type = R_386_32;
1810 }
1811
1812 bfd_put_8 (abfd, opcode, contents + roff - 2);
1813 irel->r_info = ELF32_R_INFO (r_symndx, r_type);
1814
1815 *converted = TRUE;
1816 }
1817 }
1818
1819 return TRUE;
1820}
1821
c1d11331
L		 1822/* Rename some of the generic section flags to better document how they
1823 are used here. */
c337a162
L		 1824#define need_convert_load sec_flg0
1825#define check_relocs_failed sec_flg1
c1d11331 1826
252b5132 1827/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1828 calculate needed space in the global offset table, procedure linkage
1829 table, and dynamic reloc sections. */
252b5132 1830
b34976b6 1831static bfd_boolean
55fd94b0
AM		 1832elf_i386_check_relocs (bfd *abfd,
1833 struct bfd_link_info *info,
1834 asection *sec,
1835 const Elf_Internal_Rela *relocs)
252b5132 1836{
6725bdbf 1837 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1838 Elf_Internal_Shdr *symtab_hdr;
1839 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1840 const Elf_Internal_Rela *rel;
1841 const Elf_Internal_Rela *rel_end;
252b5132 1842 asection *sreloc;
bedfd056 1843 bfd_byte *contents;
dd7e64d4 1844 bfd_boolean use_plt_got;
252b5132 1845
0e1862bb 1846 if (bfd_link_relocatable (info))
b34976b6 1847 return TRUE;
252b5132 1848
081b1afe
L		 1849 /* Don't do anything special with non-loaded, non-alloced sections.
1850 In particular, any relocs in such sections should not affect GOT
1851 and PLT reference counting (ie. we don't allow them to create GOT
1852 or PLT entries), there's no possibility or desire to optimize TLS
1853 relocs, and there's not much point in propagating relocs to shared
1854 libs that the dynamic linker won't relocate. */
1855 if ((sec->flags & SEC_ALLOC) == 0)
1856 return TRUE;
1857
0ffa91dd
NC		 1858 BFD_ASSERT (is_i386_elf (abfd));
1859
6725bdbf 1860 htab = elf_i386_hash_table (info);
4dfe6ac6 1861 if (htab == NULL)
c337a162
L		 1862 {
1863 sec->check_relocs_failed = 1;
1864 return FALSE;
1865 }
4dfe6ac6 1866
bedfd056
L		 1867 /* Get the section contents. */
1868 if (elf_section_data (sec)->this_hdr.contents != NULL)
1869 contents = elf_section_data (sec)->this_hdr.contents;
1870 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1871 {
1872 sec->check_relocs_failed = 1;
1873 return FALSE;
1874 }
1875
dd7e64d4
L		 1876 use_plt_got = (!get_elf_i386_backend_data (abfd)->is_vxworks
1877 && (get_elf_i386_backend_data (abfd)
1878 == &elf_i386_arch_bed));
1879
0ffa91dd 1880 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1881 sym_hashes = elf_sym_hashes (abfd);
252b5132 1882
252b5132
RH		 1883 sreloc = NULL;
1884
1885 rel_end = relocs + sec->reloc_count;
1886 for (rel = relocs; rel < rel_end; rel++)
1887 {
13ae64f3 1888 unsigned int r_type;
252b5132
RH		 1889 unsigned long r_symndx;
1890 struct elf_link_hash_entry *h;
d5597ebc 1891 struct elf_i386_link_hash_entry *eh;
4c544807
L		 1892 Elf_Internal_Sym *isym;
1893 const char *name;
06a6a421 1894 bfd_boolean size_reloc;
252b5132
RH		 1895
1896 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1897 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1898
d9bc7a44 1899 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1900 {
d003868e
AM		 1901 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1902 abfd,
8f615d07 1903 r_symndx);
c337a162 1904 goto error_return;
f5f31454
L		 1905 }
1906
252b5132 1907 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1908 {
1909 /* A local symbol. */
c2e61a4e
L		 1910 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1911 abfd, r_symndx);
1912 if (isym == NULL)
c337a162 1913 goto error_return;
c25bc9fc
L		 1914
1915 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1916 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1917 {
9fff0c39 1918 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1919 if (h == NULL)
c337a162 1920 goto error_return;
6bbec505 1921
c25bc9fc
L		 1922 /* Fake a STT_GNU_IFUNC symbol. */
1923 h->type = STT_GNU_IFUNC;
1924 h->def_regular = 1;
1925 h->ref_regular = 1;
1926 h->forced_local = 1;
1927 h->root.type = bfd_link_hash_defined;
1928 }
1929 else
1930 h = NULL;
1931 }
252b5132 1932 else
71cb9464 1933 {
4c544807 1934 isym = NULL;
71cb9464
L		 1935 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1936 while (h->root.type == bfd_link_hash_indirect
1937 || h->root.type == bfd_link_hash_warning)
1938 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1939 }
cbe950e9 1940
d5597ebc 1941 eh = (struct elf_i386_link_hash_entry *) h;
c25bc9fc
L		 1942 if (h != NULL)
1943 {
cbe950e9
L		 1944 switch (r_type)
1945 {
1946 default:
1947 break;
1948
d5597ebc
L		 1949 case R_386_GOTOFF:
1950 eh->gotoff_ref = 1;
cbe950e9
L		 1951 case R_386_32:
1952 case R_386_PC32:
1953 case R_386_PLT32:
1954 case R_386_GOT32:
02a86693 1955 case R_386_GOT32X:
9d4057ee
AM		 1956 if (htab->elf.dynobj == NULL)
1957 htab->elf.dynobj = abfd;
466ee2af
L		 1958 /* Create the ifunc sections for static executables. */
1959 if (h->type == STT_GNU_IFUNC
1960 && !_bfd_elf_create_ifunc_sections (htab->elf.dynobj,
1961 info))
c337a162 1962 goto error_return;
cbe950e9
L		 1963 break;
1964 }
1965
ad1e85de
L		 1966 /* It is referenced by a non-shared object. */
1967 h->ref_regular = 1;
61315175 1968 h->root.non_ir_ref = 1;
13a2df29
L		 1969
1970 if (h->type == STT_GNU_IFUNC)
1971 elf_tdata (info->output_bfd)->has_gnu_symbols
1972 |= elf_gnu_symbol_ifunc;
71cb9464 1973 }
252b5132 1974
bedfd056 1975 if (! elf_i386_tls_transition (info, abfd, sec, contents,
142411ca
L		 1976 symtab_hdr, sym_hashes,
1977 &r_type, GOT_UNKNOWN,
bedfd056 1978 rel, rel_end, h, r_symndx, FALSE))
c337a162 1979 goto error_return;
13ae64f3
JJ		 1980
1981 switch (r_type)
252b5132 1982 {
37e55690
JJ		 1983 case R_386_TLS_LDM:
1984 htab->tls_ldm_got.refcount += 1;
1985 goto create_got;
1986
1987 case R_386_PLT32:
1988 /* This symbol requires a procedure linkage table entry. We
1989 actually build the entry in adjust_dynamic_symbol,
1990 because this might be a case of linking PIC code which is
1991 never referenced by a dynamic object, in which case we
1992 don't need to generate a procedure linkage table entry
1993 after all. */
1994
1995 /* If this is a local symbol, we resolve it directly without
1996 creating a procedure linkage table entry. */
1997 if (h == NULL)
1998 continue;
1999
aec6b87e 2000 eh->has_got_reloc = 1;
f5385ebf 2001 h->needs_plt = 1;
37e55690
JJ		 2002 h->plt.refcount += 1;
2003 break;
2004
6a3e1bae 2005 case R_386_SIZE32:
06a6a421 2006 size_reloc = TRUE;
6a3e1bae
L		 2007 goto do_size;
2008
13ae64f3 2009 case R_386_TLS_IE_32:
37e55690
JJ		 2010 case R_386_TLS_IE:
2011 case R_386_TLS_GOTIE:
0e1862bb 2012 if (!bfd_link_executable (info))
13ae64f3 2013 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 2014 /* Fall through */
2015
252b5132 2016 case R_386_GOT32:
02a86693 2017 case R_386_GOT32X:
13ae64f3 2018 case R_386_TLS_GD:
67a4f2b7
AO		 2019 case R_386_TLS_GOTDESC:
2020 case R_386_TLS_DESC_CALL:
252b5132 2021 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 2022 {
2023 int tls_type, old_tls_type;
2024
2025 switch (r_type)
2026 {
2027 default:
02a86693
L		 2028 case R_386_GOT32:
2029 case R_386_GOT32X:
2030 tls_type = GOT_NORMAL;
2031 break;
13ae64f3 2032 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 2033 case R_386_TLS_GOTDESC:
2034 case R_386_TLS_DESC_CALL:
2035 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 2036 case R_386_TLS_IE_32:
2037 if (ELF32_R_TYPE (rel->r_info) == r_type)
2038 tls_type = GOT_TLS_IE_NEG;
2039 else
ebcfb3c0
JJ		 2040 /* If this is a GD->IE transition, we may use either of
2041 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 2042 tls_type = GOT_TLS_IE;
2043 break;
2044 case R_386_TLS_IE:
2045 case R_386_TLS_GOTIE:
2046 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 2047 }
2048
2049 if (h != NULL)
2050 {
2051 h->got.refcount += 1;
2052 old_tls_type = elf_i386_hash_entry(h)->tls_type;
2053 }
2054 else
2055 {
2056 bfd_signed_vma *local_got_refcounts;
2057
2058 /* This is a global offset table entry for a local symbol. */
2059 local_got_refcounts = elf_local_got_refcounts (abfd);
2060 if (local_got_refcounts == NULL)
2061 {
2062 bfd_size_type size;
2063
2064 size = symtab_hdr->sh_info;
67a4f2b7
AO		 2065 size *= (sizeof (bfd_signed_vma)
2066 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 2067 local_got_refcounts = (bfd_signed_vma *)
2068 bfd_zalloc (abfd, size);
13ae64f3 2069 if (local_got_refcounts == NULL)
c337a162 2070 goto error_return;
13ae64f3 2071 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 2072 elf_i386_local_tlsdesc_gotent (abfd)
2073 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 2074 elf_i386_local_got_tls_type (abfd)
67a4f2b7 2075 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 2076 }
2077 local_got_refcounts[r_symndx] += 1;
2078 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
2079 }
2080
37e55690
JJ		 2081 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
2082 tls_type |= old_tls_type;
13ae64f3
JJ		 2083 /* If a TLS symbol is accessed using IE at least once,
2084 there is no point to use dynamic model for it. */
ebcfb3c0 2085 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 2086 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 2087 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 2088 {
67a4f2b7 2089 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 2090 tls_type = old_tls_type;
67a4f2b7
AO		 2091 else if (GOT_TLS_GD_ANY_P (old_tls_type)
2092 && GOT_TLS_GD_ANY_P (tls_type))
2093 tls_type |= old_tls_type;
13ae64f3
JJ		 2094 else
2095 {
09a24cbf 2096 if (h)
4c544807
L		 2097 name = h->root.root.string;
2098 else
2099 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
2100 NULL);
13ae64f3 2101 (*_bfd_error_handler)
d003868e 2102 (_("%B: `%s' accessed both as normal and "
55fd94b0 2103 "thread local symbol"),
4c544807 2104 abfd, name);
68c4a57e 2105 bfd_set_error (bfd_error_bad_value);
c337a162 2106 goto error_return;
13ae64f3
JJ		 2107 }
2108 }
2109
2110 if (old_tls_type != tls_type)
2111 {
2112 if (h != NULL)
2113 elf_i386_hash_entry (h)->tls_type = tls_type;
2114 else
2115 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
2116 }
2117 }
0ac8d2ca
AM		 2118 /* Fall through */
2119
2120 case R_386_GOTOFF:
2121 case R_386_GOTPC:
13ae64f3 2122 create_got:
6de2ae4a 2123 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 2124 {
2125 if (htab->elf.dynobj == NULL)
2126 htab->elf.dynobj = abfd;
6de2ae4a 2127 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c337a162 2128 goto error_return;
0ac8d2ca 2129 }
37e55690 2130 if (r_type != R_386_TLS_IE)
aec6b87e
L		 2131 {
2132 if (eh != NULL)
2133 eh->has_got_reloc = 1;
2134 break;
2135 }
37e55690 2136 /* Fall through */
252b5132 2137
37e55690
JJ		 2138 case R_386_TLS_LE_32:
2139 case R_386_TLS_LE:
aec6b87e
L		 2140 if (eh != NULL)
2141 eh->has_got_reloc = 1;
0e1862bb 2142 if (bfd_link_executable (info))
37e55690 2143 break;
bffbf940 2144 info->flags |= DF_STATIC_TLS;
aec6b87e 2145 goto do_relocation;
252b5132
RH		 2146
2147 case R_386_32:
2148 case R_386_PC32:
aec6b87e
L		 2149 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
2150 eh->has_non_got_reloc = 1;
2151do_relocation:
bf52d7c7
L		 2152 /* We are called after all symbols have been resolved. Only
2153 relocation against STT_GNU_IFUNC symbol must go through
2154 PLT. */
d1ed1c7d
L		 2155 if (h != NULL
2156 && (bfd_link_executable (info)
bf52d7c7 2157 || h->type == STT_GNU_IFUNC))
6725bdbf 2158 {
12d0ee4a 2159 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 2160 need a copy reloc. We can't check reliably at this
2161 stage whether the section is read-only, as input
2162 sections have not yet been mapped to output sections.
2163 Tentatively set the flag for now, and correct in
2164 adjust_dynamic_symbol. */
f5385ebf 2165 h->non_got_ref = 1;
12d0ee4a 2166
233cc9c1
L		 2167 /* We may need a .plt entry if the symbol is a function
2168 defined in a shared lib or is a STT_GNU_IFUNC function
2169 referenced from the code or read-only section. */
2170 if (!h->def_regular
2171 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
2172 h->plt.refcount += 1;
2173
4b627c18
L		 2174 if (r_type == R_386_PC32)
2175 {
2176 /* Since something like ".long foo - ." may be used
2177 as pointer, make sure that PLT is used if foo is
2178 a function defined in a shared library. */
2179 if ((sec->flags & SEC_CODE) == 0)
2180 h->pointer_equality_needed = 1;
2181 }
2182 else
04ebc307
L		 2183 {
2184 h->pointer_equality_needed = 1;
2185 /* R_386_32 can be resolved at run-time. */
2186 if (r_type == R_386_32
2187 && (sec->flags & SEC_READONLY) == 0)
2188 eh->func_pointer_refcount += 1;
2189 }
6725bdbf 2190 }
7843f00e 2191
06a6a421 2192 size_reloc = FALSE;
6a3e1bae 2193do_size:
252b5132 2194 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 2195 against a global symbol, or a non PC relative reloc
2196 against a local symbol, then we need to copy the reloc
2197 into the shared library. However, if we are linking with
2198 -Bsymbolic, we do not need to copy a reloc against a
2199 global symbol which is defined in an object we are
2200 including in the link (i.e., DEF_REGULAR is set). At
2201 this point we have not seen all the input files, so it is
2202 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 2203 later (it is never cleared). In case of a weak definition,
2204 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 2205 a shared library. We account for that possibility below by
1f655a09
L		 2206 storing information in the relocs_copied field of the hash
2207 table entry. A similar situation occurs when creating
2208 shared libraries and symbol visibility changes render the
12d0ee4a 2209 symbol local.
56882138 2210
12d0ee4a
AM		 2211 If on the other hand, we are creating an executable, we
2212 may need to keep relocations for symbols satisfied by a
2213 dynamic library if we manage to avoid copy relocs for the
233cc9c1
L		 2214 symbol.
2215
2216 Generate dynamic pointer relocation against STT_GNU_IFUNC
2217 symbol in the non-code section. */
081b1afe
L		 2218 if ((bfd_link_pic (info)
2219 && (r_type != R_386_PC32
2220 || (h != NULL
2221 && (! (bfd_link_pie (info)
2222 || SYMBOLIC_BIND (info, h))
2223 || h->root.type == bfd_link_hash_defweak
2224 || !h->def_regular))))
233cc9c1
L		 2225 || (h != NULL
2226 && h->type == STT_GNU_IFUNC
2227 && r_type == R_386_32
2228 && (sec->flags & SEC_CODE) == 0)
081b1afe
L		 2229 || (ELIMINATE_COPY_RELOCS
2230 && !bfd_link_pic (info)
2231 && h != NULL
2232 && (h->root.type == bfd_link_hash_defweak
2233 || !h->def_regular)))
252b5132 2234 {
e03a8ed8
L		 2235 struct elf_dyn_relocs *p;
2236 struct elf_dyn_relocs **head;
ec338859 2237
12d0ee4a
AM		 2238 /* We must copy these reloc types into the output file.
2239 Create a reloc section in dynobj and make room for
2240 this reloc. */
252b5132
RH		 2241 if (sreloc == NULL)
2242 {
0ac8d2ca
AM		 2243 if (htab->elf.dynobj == NULL)
2244 htab->elf.dynobj = abfd;
2245
83bac4b0
NC		 2246 sreloc = _bfd_elf_make_dynamic_reloc_section
2247 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
2248
252b5132 2249 if (sreloc == NULL)
c337a162 2250 goto error_return;
252b5132
RH		 2251 }
2252
0c715baa
AM		 2253 /* If this is a global symbol, we count the number of
2254 relocations we need for this symbol. */
2255 if (h != NULL)
252b5132 2256 {
d5597ebc 2257 head = &eh->dyn_relocs;
0c715baa
AM		 2258 }
2259 else
2260 {
ec338859
AM		 2261 /* Track dynamic relocs needed for local syms too.
2262 We really need local syms available to do this
2263 easily. Oh well. */
87d72d41 2264 void **vpp;
ec338859 2265 asection *s;
87d72d41
AM		 2266
2267 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2268 abfd, r_symndx);
2269 if (isym == NULL)
c337a162 2270 goto error_return;
87d72d41
AM		 2271
2272 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 2273 if (s == NULL)
87d72d41 2274 s = sec;
ec338859 2275
e81d3500 2276 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 2277 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 2278 }
2279
2280 p = *head;
2281 if (p == NULL || p->sec != sec)
2282 {
2283 bfd_size_type amt = sizeof *p;
a50b1753
NC		 2284 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
2285 amt);
ec338859 2286 if (p == NULL)
c337a162 2287 goto error_return;
ec338859
AM		 2288 p->next = *head;
2289 *head = p;
2290 p->sec = sec;
2291 p->count = 0;
2292 p->pc_count = 0;
252b5132 2293 }
ec338859
AM		 2294
2295 p->count += 1;
06a6a421
L		 2296 /* Count size relocation as PC-relative relocation. */
2297 if (r_type == R_386_PC32 || size_reloc)
ec338859 2298 p->pc_count += 1;
252b5132 2299 }
252b5132
RH		 2300 break;
2301
2302 /* This relocation describes the C++ object vtable hierarchy.
2303 Reconstruct it for later use during GC. */
2304 case R_386_GNU_VTINHERIT:
d17e0c6e 2305 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c337a162 2306 goto error_return;
252b5132
RH		 2307 break;
2308
2309 /* This relocation describes which C++ vtable entries are actually
2310 used. Record for later use during GC. */
2311 case R_386_GNU_VTENTRY:
c6aa130f
MS		 2312 BFD_ASSERT (h != NULL);
2313 if (h != NULL
2314 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c337a162 2315 goto error_return;
252b5132
RH		 2316 break;
2317
2318 default:
2319 break;
2320 }
dd7e64d4
L		 2321
2322 if (use_plt_got
2323 && h != NULL
2324 && h->plt.refcount > 0
8ded2ddc
L		 2325 && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
2326 || h->got.refcount > 0)
dd7e64d4
L		 2327 && htab->plt_got == NULL)
2328 {
2329 /* Create the GOT procedure linkage table. */
2330 unsigned int plt_got_align;
2331 const struct elf_backend_data *bed;
2332
2333 bed = get_elf_backend_data (info->output_bfd);
2334 BFD_ASSERT (sizeof (elf_i386_got_plt_entry) == 8
2335 && (sizeof (elf_i386_got_plt_entry)
2336 == sizeof (elf_i386_pic_got_plt_entry)));
2337 plt_got_align = 3;
2338
2339 if (htab->elf.dynobj == NULL)
2340 htab->elf.dynobj = abfd;
2341 htab->plt_got
2342 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2343 ".plt.got",
2344 (bed->dynamic_sec_flags
2345 | SEC_ALLOC
2346 | SEC_CODE
2347 | SEC_LOAD
2348 | SEC_READONLY));
2349 if (htab->plt_got == NULL
2350 || !bfd_set_section_alignment (htab->elf.dynobj,
2351 htab->plt_got,
2352 plt_got_align))
c337a162 2353 goto error_return;
dd7e64d4 2354 }
c1d11331 2355
52bf37dd 2356 if (r_type == R_386_GOT32X
c1d11331 2357 && (h == NULL || h->type != STT_GNU_IFUNC))
02a86693 2358 sec->need_convert_load = 1;
252b5132
RH		 2359 }
2360
bedfd056
L		 2361 if (elf_section_data (sec)->this_hdr.contents != contents)
2362 {
2363 if (!info->keep_memory)
2364 free (contents);
2365 else
2366 {
2367 /* Cache the section contents for elf_link_input_bfd. */
2368 elf_section_data (sec)->this_hdr.contents = contents;
2369 }
2370 }
2371
b34976b6 2372 return TRUE;
c337a162
L		 2373
2374error_return:
bedfd056
L		 2375 if (elf_section_data (sec)->this_hdr.contents != contents)
2376 free (contents);
c337a162
L		 2377 sec->check_relocs_failed = 1;
2378 return FALSE;
252b5132
RH		 2379}
2380
2381/* Return the section that should be marked against GC for a given
2382 relocation. */
2383
2384static asection *
55fd94b0 2385elf_i386_gc_mark_hook (asection *sec,
07adf181 2386 struct bfd_link_info *info,
55fd94b0
AM		 2387 Elf_Internal_Rela *rel,
2388 struct elf_link_hash_entry *h,
2389 Elf_Internal_Sym *sym)
252b5132
RH		 2390{
2391 if (h != NULL)
07adf181
AM		 2392 switch (ELF32_R_TYPE (rel->r_info))
2393 {
2394 case R_386_GNU_VTINHERIT:
2395 case R_386_GNU_VTENTRY:
2396 return NULL;
2397 }
2398
2399 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 2400}
2401
aec6b87e
L		 2402/* Remove undefined weak symbol from the dynamic symbol table if it
2403 is resolved to 0. */
2404
2405static bfd_boolean
2406elf_i386_fixup_symbol (struct bfd_link_info *info,
2407 struct elf_link_hash_entry *h)
2408{
2409 if (h->dynindx != -1
2410 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
e62b9723 2411 elf_i386_hash_entry (h)->has_got_reloc,
aec6b87e
L		 2412 elf_i386_hash_entry (h)))
2413 {
2414 h->dynindx = -1;
2415 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2416 h->dynstr_index);
2417 }
2418 return TRUE;
2419}
2420
252b5132
RH		 2421/* Adjust a symbol defined by a dynamic object and referenced by a
2422 regular object. The current definition is in some section of the
2423 dynamic object, but we're not including those sections. We have to
2424 change the definition to something the rest of the link can
2425 understand. */
2426
b34976b6 2427static bfd_boolean
55fd94b0
AM		 2428elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2429 struct elf_link_hash_entry *h)
252b5132 2430{
6725bdbf 2431 struct elf_i386_link_hash_table *htab;
252b5132 2432 asection *s;
5ca5bb35
L		 2433 struct elf_i386_link_hash_entry *eh;
2434 struct elf_dyn_relocs *p;
252b5132 2435
cbe950e9
L		 2436 /* STT_GNU_IFUNC symbol must go through PLT. */
2437 if (h->type == STT_GNU_IFUNC)
2438 {
73bcf233
L		 2439 /* All local STT_GNU_IFUNC references must be treate as local
2440 calls via local PLT. */
5ca5bb35
L		 2441 if (h->ref_regular
2442 && SYMBOL_CALLS_LOCAL (info, h))
2443 {
73bcf233 2444 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2445 struct elf_dyn_relocs **pp;
2446
2447 eh = (struct elf_i386_link_hash_entry *) h;
2448 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2449 {
2450 pc_count += p->pc_count;
2451 p->count -= p->pc_count;
2452 p->pc_count = 0;
73bcf233 2453 count += p->count;
5ca5bb35
L		 2454 if (p->count == 0)
2455 *pp = p->next;
2456 else
2457 pp = &p->next;
2458 }
2459
73bcf233 2460 if (pc_count || count)
5ca5bb35 2461 {
5ca5bb35 2462 h->non_got_ref = 1;
233cc9c1
L		 2463 if (pc_count)
2464 {
2465 /* Increment PLT reference count only for PC-relative
2466 references. */
2467 h->needs_plt = 1;
2468 if (h->plt.refcount <= 0)
2469 h->plt.refcount = 1;
2470 else
2471 h->plt.refcount += 1;
2472 }
5ca5bb35
L		 2473 }
2474 }
2475
cbe950e9
L		 2476 if (h->plt.refcount <= 0)
2477 {
2478 h->plt.offset = (bfd_vma) -1;
2479 h->needs_plt = 0;
2480 }
2481 return TRUE;
2482 }
2483
252b5132
RH		 2484 /* If this is a function, put it in the procedure linkage table. We
2485 will fill in the contents of the procedure linkage table later,
2486 when we know the address of the .got section. */
2487 if (h->type == STT_FUNC
f5385ebf 2488 || h->needs_plt)
252b5132 2489 {
6725bdbf 2490 if (h->plt.refcount <= 0
9c7a29a3
AM		 2491 || SYMBOL_CALLS_LOCAL (info, h)
2492 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2493 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2494 {
2495 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2496 file, but the symbol was never referred to by a dynamic
2497 object, or if all references were garbage collected. In
2498 such a case, we don't actually need to build a procedure
2499 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2500 h->plt.offset = (bfd_vma) -1;
f5385ebf 2501 h->needs_plt = 0;
252b5132
RH		 2502 }
2503
b34976b6 2504 return TRUE;
252b5132 2505 }
6725bdbf
AM		 2506 else
2507 /* It's possible that we incorrectly decided a .plt reloc was
2508 needed for an R_386_PC32 reloc to a non-function sym in
2509 check_relocs. We can't decide accurately between function and
2510 non-function syms in check-relocs; Objects loaded later in
2511 the link may change h->type. So fix it now. */
bbd7ec4a 2512 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2513
2514 /* If this is a weak symbol, and there is a real definition, the
2515 processor independent code will have arranged for us to see the
2516 real definition first, and we can just use the same value. */
f6e332e6 2517 if (h->u.weakdef != NULL)
252b5132 2518 {
f6e332e6
AM		 2519 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2520 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2521 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2522 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2523 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2524 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2525 return TRUE;
252b5132
RH		 2526 }
2527
2528 /* This is a reference to a symbol defined by a dynamic object which
2529 is not a function. */
2530
2531 /* If we are creating a shared library, we must presume that the
2532 only references to the symbol are via the global offset table.
2533 For such cases we need not do anything here; the relocations will
2534 be handled correctly by relocate_section. */
0e1862bb 2535 if (!bfd_link_executable (info))
b34976b6 2536 return TRUE;
252b5132 2537
7843f00e 2538 /* If there are no references to this symbol that do not use the
d5597ebc
L		 2539 GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
2540 reloc. */
2541 eh = (struct elf_i386_link_hash_entry *) h;
2542 if (!h->non_got_ref && !eh->gotoff_ref)
b34976b6 2543 return TRUE;
7843f00e 2544
8bd621d8
AM		 2545 /* If -z nocopyreloc was given, we won't generate them either. */
2546 if (info->nocopyreloc)
2547 {
f5385ebf 2548 h->non_got_ref = 0;
b34976b6 2549 return TRUE;
8bd621d8
AM		 2550 }
2551
643796e3 2552 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2553 if (htab == NULL)
2554 return FALSE;
643796e3 2555
d5597ebc
L		 2556 /* If there aren't any dynamic relocs in read-only sections nor
2557 R_386_GOTOFF relocation, then we can keep the dynamic relocs and
2558 avoid the copy reloc. This doesn't work on VxWorks, where we can
2559 not have dynamic relocations (other than copy and jump slot
2560 relocations) in an executable. */
23209a78 2561 if (ELIMINATE_COPY_RELOCS
d5597ebc 2562 && !eh->gotoff_ref
23209a78 2563 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2564 {
a23b6845
AM		 2565 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2566 {
2567 s = p->sec->output_section;
2568 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2569 break;
2570 }
2571
a23b6845
AM		 2572 if (p == NULL)
2573 {
f5385ebf 2574 h->non_got_ref = 0;
a23b6845
AM		 2575 return TRUE;
2576 }
ebe50bae
AM		 2577 }
2578
252b5132
RH		 2579 /* We must allocate the symbol in our .dynbss section, which will
2580 become part of the .bss section of the executable. There will be
2581 an entry for this symbol in the .dynsym section. The dynamic
2582 object will contain position independent code, so all references
2583 from the dynamic object to this symbol will go through the global
2584 offset table. The dynamic linker will use the .dynsym entry to
2585 determine the address it must put in the global offset table, so
2586 both the dynamic object and the regular object will refer to the
2587 same memory location for the variable. */
2588
252b5132
RH		 2589 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2590 copy the initial value out of the dynamic object and into the
0ac8d2ca 2591 runtime process image. */
1d7e9d18 2592 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2593 {
eea6121a 2594 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2595 h->needs_copy = 1;
252b5132
RH		 2596 }
2597
0ac8d2ca 2598 s = htab->sdynbss;
252b5132 2599
6cabe1ea 2600 return _bfd_elf_adjust_dynamic_copy (info, h, s);
252b5132
RH		 2601}
2602
6725bdbf 2603/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2604 dynamic relocs. */
6725bdbf 2605
b34976b6 2606static bfd_boolean
eb4ff4d6 2607elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2608{
2609 struct bfd_link_info *info;
2610 struct elf_i386_link_hash_table *htab;
5a15f56f 2611 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2612 struct elf_dyn_relocs *p;
25e762b9 2613 unsigned plt_entry_size;
aec6b87e 2614 bfd_boolean resolved_to_zero;
6725bdbf 2615
e92d460e 2616 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2617 return TRUE;
6725bdbf 2618
cbe950e9 2619 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2620
6725bdbf
AM		 2621 info = (struct bfd_link_info *) inf;
2622 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2623 if (htab == NULL)
2624 return FALSE;
6725bdbf 2625
25e762b9
RM		 2626 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2627
e62b9723
L		 2628 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
2629 eh->has_got_reloc,
2630 eh);
aec6b87e 2631
04ebc307
L		 2632 /* Clear the reference count of function pointer relocations if
2633 symbol isn't a normal function. */
2634 if (h->type != STT_FUNC)
2635 eh->func_pointer_refcount = 0;
2636
dd7e64d4
L		 2637 /* We can't use the GOT PLT if pointer equality is needed since
2638 finish_dynamic_symbol won't clear symbol value and the dynamic
2639 linker won't update the GOT slot. We will get into an infinite
2640 loop at run-time. */
2641 if (htab->plt_got != NULL
2642 && h->type != STT_GNU_IFUNC
2643 && !h->pointer_equality_needed
2644 && h->plt.refcount > 0
2645 && h->got.refcount > 0)
2646 {
2647 /* Don't use the regular PLT if there are both GOT and GOTPLT
2648 reloctions. */
2649 h->plt.offset = (bfd_vma) -1;
2650
2651 /* Use the GOT PLT. */
2652 eh->plt_got.refcount = 1;
2653 }
2654
cbe950e9
L		 2655 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2656 here if it is defined and referenced in a non-shared object. */
2657 if (h->type == STT_GNU_IFUNC
2658 && h->def_regular)
25e762b9 2659 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
2df3368d
L		 2660 &htab->readonly_dynrelocs_against_ifunc,
2661 plt_entry_size,
233cc9c1 2662 plt_entry_size, 4, TRUE);
04ebc307
L		 2663 /* Don't create the PLT entry if there are only function pointer
2664 relocations which can be resolved at run-time. */
cbe950e9 2665 else if (htab->elf.dynamic_sections_created
04ebc307
L		 2666 && (h->plt.refcount > eh->func_pointer_refcount
2667 || eh->plt_got.refcount > 0))
6725bdbf 2668 {
25070364
L		 2669 bfd_boolean use_plt_got;
2670
04ebc307
L		 2671 /* Clear the reference count of function pointer relocations
2672 if PLT is used. */
2673 eh->func_pointer_refcount = 0;
2674
8ded2ddc 2675 if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
25070364
L		 2676 {
2677 /* Don't use the regular PLT for DF_BIND_NOW. */
2678 h->plt.offset = (bfd_vma) -1;
2679
2680 /* Use the GOT PLT. */
2681 h->got.refcount = 1;
2682 eh->plt_got.refcount = 1;
2683 }
2684
2685 use_plt_got = eh->plt_got.refcount > 0;
dd7e64d4 2686
5a15f56f
AM		 2687 /* Make sure this symbol is output as a dynamic symbol.
2688 Undefined weak syms won't yet be marked as dynamic. */
2689 if (h->dynindx == -1
aec6b87e
L		 2690 && !h->forced_local
2691 && !resolved_to_zero)
5a15f56f 2692 {
c152c796 2693 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2694 return FALSE;
5a15f56f
AM		 2695 }
2696
0e1862bb 2697 if (bfd_link_pic (info)
4e795f50 2698 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2699 {
6de2ae4a 2700 asection *s = htab->elf.splt;
dd7e64d4 2701 asection *got_s = htab->plt_got;
6725bdbf 2702
7c1e8d3e
L		 2703 /* If this is the first .plt entry, make room for the special
2704 first entry. The .plt section is used by prelink to undo
2705 prelinking for dynamic relocations. */
2706 if (s->size == 0)
2707 s->size = plt_entry_size;
2708
dd7e64d4
L		 2709 if (use_plt_got)
2710 eh->plt_got.offset = got_s->size;
2711 else
7c1e8d3e 2712 h->plt.offset = s->size;
6725bdbf 2713
ced53ee5
AM		 2714 /* If this symbol is not defined in a regular file, and we are
2715 not generating a shared library, then set the symbol to this
2716 location in the .plt. This is required to make function
2717 pointers compare as equal between the normal executable and
2718 the shared library. */
0e1862bb 2719 if (! bfd_link_pic (info)
f5385ebf 2720 && !h->def_regular)
ced53ee5 2721 {
dd7e64d4
L		 2722 if (use_plt_got)
2723 {
2724 /* We need to make a call to the entry of the GOT PLT
2725 instead of regular PLT entry. */
2726 h->root.u.def.section = got_s;
2727 h->root.u.def.value = eh->plt_got.offset;
2728 }
2729 else
2730 {
2731 h->root.u.def.section = s;
2732 h->root.u.def.value = h->plt.offset;
2733 }
ced53ee5 2734 }
6725bdbf 2735
ced53ee5 2736 /* Make room for this entry. */
dd7e64d4
L		 2737 if (use_plt_got)
2738 got_s->size += sizeof (elf_i386_got_plt_entry);
2739 else
2740 {
2741 s->size += plt_entry_size;
6725bdbf 2742
dd7e64d4
L		 2743 /* We also need to make an entry in the .got.plt section,
2744 which will be placed in the .got section by the linker
2745 script. */
2746 htab->elf.sgotplt->size += 4;
6725bdbf 2747
aec6b87e
L		 2748 /* There should be no PLT relocation against resolved
2749 undefined weak symbol in executable. */
2750 if (!resolved_to_zero)
2751 {
2752 /* We also need to make an entry in the .rel.plt
2753 section. */
2754 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2755 htab->elf.srelplt->reloc_count++;
2756 }
dd7e64d4 2757 }
eac338cf 2758
23209a78 2759 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
0e1862bb 2760 && !bfd_link_pic (info))
eac338cf
PB		 2761 {
2762 /* VxWorks has a second set of relocations for each PLT entry
2763 in executables. They go in a separate relocation section,
2764 which is processed by the kernel loader. */
2765
2766 /* There are two relocations for the initial PLT entry: an
2767 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2768 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2769
25e762b9 2770 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2771 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2772
2773 /* There are two extra relocations for each subsequent PLT entry:
2774 an R_386_32 relocation for the GOT entry, and an R_386_32
2775 relocation for the PLT entry. */
2776
2777 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2778 }
6725bdbf 2779 }
ced53ee5
AM		 2780 else
2781 {
13f42277 2782 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2783 h->plt.offset = (bfd_vma) -1;
f5385ebf 2784 h->needs_plt = 0;
ced53ee5 2785 }
6725bdbf
AM		 2786 }
2787 else
2788 {
13f42277 2789 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2790 h->plt.offset = (bfd_vma) -1;
f5385ebf 2791 h->needs_plt = 0;
6725bdbf
AM		 2792 }
2793
67a4f2b7
AO		 2794 eh->tlsdesc_got = (bfd_vma) -1;
2795
37e55690 2796 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2797 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2798 if (h->got.refcount > 0
0e1862bb 2799 && bfd_link_executable (info)
13ae64f3 2800 && h->dynindx == -1
37e55690 2801 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2802 h->got.offset = (bfd_vma) -1;
13ae64f3 2803 else if (h->got.refcount > 0)
6725bdbf 2804 {
0ac8d2ca 2805 asection *s;
b34976b6 2806 bfd_boolean dyn;
13ae64f3 2807 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2808
5a15f56f
AM		 2809 /* Make sure this symbol is output as a dynamic symbol.
2810 Undefined weak syms won't yet be marked as dynamic. */
2811 if (h->dynindx == -1
aec6b87e
L		 2812 && !h->forced_local
2813 && !resolved_to_zero)
5a15f56f 2814 {
c152c796 2815 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2816 return FALSE;
5a15f56f
AM		 2817 }
2818
6de2ae4a 2819 s = htab->elf.sgot;
67a4f2b7
AO		 2820 if (GOT_TLS_GDESC_P (tls_type))
2821 {
6de2ae4a 2822 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2823 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2824 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2825 h->got.offset = (bfd_vma) -2;
2826 }
2827 if (! GOT_TLS_GDESC_P (tls_type)
2828 || GOT_TLS_GD_P (tls_type))
2829 {
2830 h->got.offset = s->size;
2831 s->size += 4;
2832 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2833 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2834 s->size += 4;
2835 }
ebe50bae 2836 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2837 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2838 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2839 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2840 need two), R_386_TLS_GD needs one if local symbol and two if
aec6b87e
L		 2841 global. No dynamic relocation against resolved undefined weak
2842 symbol in executable. */
37e55690 2843 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2844 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2845 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2846 || (tls_type & GOT_TLS_IE))
6de2ae4a 2847 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2848 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2849 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2850 else if (! GOT_TLS_GDESC_P (tls_type)
aec6b87e
L		 2851 && ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2852 && !resolved_to_zero)
67a4f2b7 2853 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 2854 && (bfd_link_pic (info)
ef5aade5 2855 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2856 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2857 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2858 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2859 }
2860 else
51b64d56 2861 h->got.offset = (bfd_vma) -1;
6725bdbf 2862
5a15f56f 2863 if (eh->dyn_relocs == NULL)
b34976b6 2864 return TRUE;
5a15f56f 2865
0c715baa
AM		 2866 /* In the shared -Bsymbolic case, discard space allocated for
2867 dynamic pc-relative relocs against symbols which turn out to be
2868 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2869 space for pc-relative relocs that have become local due to symbol
2870 visibility changes. */
0c715baa 2871
0e1862bb 2872 if (bfd_link_pic (info))
5a15f56f 2873 {
09695f56
AM		 2874 /* The only reloc that uses pc_count is R_386_PC32, which will
2875 appear on a call or on something like ".long foo - .". We
2876 want calls to protected symbols to resolve directly to the
2877 function rather than going via the plt. If people want
2878 function pointer comparisons to work as expected then they
2879 should avoid writing assembly like ".long foo - .". */
2880 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2881 {
e03a8ed8 2882 struct elf_dyn_relocs **pp;
0c715baa
AM		 2883
2884 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2885 {
c3ce498c
L		 2886 p->count -= p->pc_count;
2887 p->pc_count = 0;
0c715baa
AM		 2888 if (p->count == 0)
2889 *pp = p->next;
2890 else
2891 pp = &p->next;
2892 }
5a15f56f 2893 }
4e795f50 2894
23209a78 2895 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2896 {
e03a8ed8 2897 struct elf_dyn_relocs **pp;
3348747a
NS		 2898 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2899 {
2900 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2901 *pp = p->next;
2902 else
2903 pp = &p->next;
2904 }
2905 }
2906
4e795f50 2907 /* Also discard relocs on undefined weak syms with non-default
aec6b87e 2908 visibility or in PIE. */
22d606e9 2909 if (eh->dyn_relocs != NULL
c353e543 2910 && h->root.type == bfd_link_hash_undefweak)
22d606e9 2911 {
aec6b87e
L		 2912 /* Undefined weak symbol is never bound locally in shared
2913 library. */
2914 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2915 || resolved_to_zero)
2916 {
2917 if (h->non_got_ref)
2918 {
2919 /* Keep dynamic non-GOT/non-PLT relocation so that we
2920 can branch to 0 without PLT. */
2921 struct elf_dyn_relocs **pp;
2922
2923 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2924 if (p->pc_count == 0)
2925 *pp = p->next;
2926 else
2927 {
2928 /* Remove non-R_386_PC32 relocation. */
2929 p->count = p->pc_count;
2930 pp = &p->next;
2931 }
22d606e9 2932
aec6b87e
L		 2933 if (eh->dyn_relocs != NULL)
2934 {
2935 /* Make sure undefined weak symbols are output
2936 as dynamic symbols in PIEs for dynamic non-GOT
2937 non-PLT reloations. */
2938 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2939 return FALSE;
2940 }
2941 }
2942 else
2943 eh->dyn_relocs = NULL;
2944 }
22d606e9
AM		 2945 else if (h->dynindx == -1
2946 && !h->forced_local)
2947 {
2948 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2949 return FALSE;
2950 }
2951 }
0c715baa 2952 }
a23b6845 2953 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2954 {
2955 /* For the non-shared case, discard space for relocs against
2956 symbols which turn out to need copy relocs or are not
04ebc307
L		 2957 dynamic. Keep dynamic relocations for run-time function
2958 pointer initialization. */
0c715baa 2959
aec6b87e
L		 2960 if ((!h->non_got_ref
2961 || eh->func_pointer_refcount > 0
2962 || (h->root.type == bfd_link_hash_undefweak
2963 && !resolved_to_zero))
f5385ebf
AM		 2964 && ((h->def_dynamic
2965 && !h->def_regular)
ebe50bae 2966 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2967 && (h->root.type == bfd_link_hash_undefweak
2968 || h->root.type == bfd_link_hash_undefined))))
2969 {
2970 /* Make sure this symbol is output as a dynamic symbol.
2971 Undefined weak syms won't yet be marked as dynamic. */
2972 if (h->dynindx == -1
aec6b87e
L		 2973 && !h->forced_local
2974 && !resolved_to_zero)
0c715baa 2975 {
c152c796 2976 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2977 return FALSE;
0c715baa 2978 }
5a15f56f 2979
0c715baa
AM		 2980 /* If that succeeded, we know we'll be keeping all the
2981 relocs. */
2982 if (h->dynindx != -1)
2983 goto keep;
2984 }
2985
2986 eh->dyn_relocs = NULL;
04ebc307 2987 eh->func_pointer_refcount = 0;
0c715baa 2988
ec338859 2989 keep: ;
5a15f56f
AM		 2990 }
2991
0c715baa
AM		 2992 /* Finally, allocate space. */
2993 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2994 {
e7c33416
NC		 2995 asection *sreloc;
2996
cbe950e9 2997 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2998
2999 BFD_ASSERT (sreloc != NULL);
eea6121a 3000 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 3001 }
3002
b34976b6 3003 return TRUE;
6725bdbf
AM		 3004}
3005
c25bc9fc
L		 3006/* Allocate space in .plt, .got and associated reloc sections for
3007 local dynamic relocs. */
3008
3009static bfd_boolean
3010elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
3011{
3012 struct elf_link_hash_entry *h
3013 = (struct elf_link_hash_entry *) *slot;
3014
3015 if (h->type != STT_GNU_IFUNC
3016 || !h->def_regular
3017 || !h->ref_regular
3018 || !h->forced_local
3019 || h->root.type != bfd_link_hash_defined)
3020 abort ();
3021
3022 return elf_i386_allocate_dynrelocs (h, inf);
3023}
3024
0c715baa
AM		 3025/* Find any dynamic relocs that apply to read-only sections. */
3026
b34976b6 3027static bfd_boolean
eb4ff4d6 3028elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 3029{
3030 struct elf_i386_link_hash_entry *eh;
e03a8ed8 3031 struct elf_dyn_relocs *p;
0c715baa 3032
aa715242
L		 3033 /* Skip local IFUNC symbols. */
3034 if (h->forced_local && h->type == STT_GNU_IFUNC)
3035 return TRUE;
3036
0c715baa
AM		 3037 eh = (struct elf_i386_link_hash_entry *) h;
3038 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3039 {
3040 asection *s = p->sec->output_section;
3041
3042 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3043 {
3044 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3045
3046 info->flags |= DF_TEXTREL;
3047
0e1862bb 3048 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 3049 || info->error_textrel)
3050 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L		 3051 p->sec->owner, h->root.root.string,
3052 p->sec);
3053
0c715baa 3054 /* Not an error, just cut short the traversal. */
b34976b6 3055 return FALSE;
0c715baa
AM		 3056 }
3057 }
b34976b6 3058 return TRUE;
0c715baa
AM		 3059}
3060
c175a657 3061/* Convert load via the GOT slot to load immediate. */
daa67607
L		 3062
3063static bfd_boolean
02a86693 3064elf_i386_convert_load (bfd *abfd, asection *sec,
a6af384b 3065 struct bfd_link_info *link_info)
daa67607 3066{
c175a657 3067 struct elf_i386_link_hash_table *htab;
daa67607
L		 3068 Elf_Internal_Shdr *symtab_hdr;
3069 Elf_Internal_Rela *internal_relocs;
3070 Elf_Internal_Rela *irel, *irelend;
3071 bfd_byte *contents;
c175a657 3072 bfd_boolean changed;
daa67607
L		 3073 bfd_signed_vma *local_got_refcounts;
3074
3075 /* Don't even try to convert non-ELF outputs. */
3076 if (!is_elf_hash_table (link_info->hash))
3077 return FALSE;
3078
c1d11331 3079 /* Nothing to do if there is no need or no output. */
daa67607 3080 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
02a86693 3081 || sec->need_convert_load == 0
c8831961 3082 || bfd_is_abs_section (sec->output_section))
daa67607
L		 3083 return TRUE;
3084
3085 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3086
3087 /* Load the relocations for this section. */
3088 internal_relocs = (_bfd_elf_link_read_relocs
3089 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
3090 link_info->keep_memory));
3091 if (internal_relocs == NULL)
3092 return FALSE;
3093
c175a657 3094 changed = FALSE;
daa67607 3095 htab = elf_i386_hash_table (link_info);
daa67607
L		 3096 local_got_refcounts = elf_local_got_refcounts (abfd);
3097
3098 /* Get the section contents. */
3099 if (elf_section_data (sec)->this_hdr.contents != NULL)
3100 contents = elf_section_data (sec)->this_hdr.contents;
3101 else
3102 {
3103 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
3104 goto error_return;
3105 }
3106
3107 irelend = internal_relocs + sec->reloc_count;
3108 for (irel = internal_relocs; irel < irelend; irel++)
3109 {
3110 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
c175a657 3111 unsigned int r_symndx;
daa67607 3112 struct elf_link_hash_entry *h;
c175a657 3113 bfd_boolean converted;
daa67607 3114
7d4d9709
L		 3115 /* Don't convert R_386_GOT32 since we can't tell if it is applied
3116 to "mov $foo@GOT, %reg" which isn't a load via GOT. */
3117 if (r_type != R_386_GOT32X)
daa67607
L		 3118 continue;
3119
c175a657 3120 r_symndx = ELF32_R_SYM (irel->r_info);
02a86693 3121 if (r_symndx < symtab_hdr->sh_info)
c175a657
L		 3122 h = elf_i386_get_local_sym_hash (htab, sec->owner,
3123 (const Elf_Internal_Rela *) irel,
3124 FALSE);
3125 else
02a86693 3126 {
c175a657
L		 3127 h = elf_sym_hashes (abfd)[r_symndx - symtab_hdr->sh_info];
3128 while (h->root.type == bfd_link_hash_indirect
3129 || h->root.type == bfd_link_hash_warning)
3130 h = (struct elf_link_hash_entry *) h->root.u.i.link;
daa67607
L		 3131 }
3132
02a86693 3133 /* STT_GNU_IFUNC must keep GOT32 relocations. */
c175a657 3134 if (h != NULL && h->type == STT_GNU_IFUNC)
02a86693
L		 3135 continue;
3136
c175a657
L		 3137 converted = FALSE;
3138 if (!elf_i386_convert_load_reloc (abfd, symtab_hdr, contents,
3139 irel, h, &converted, link_info))
3140 goto error_return;
bae420ef 3141
c175a657 3142 if (converted)
02a86693 3143 {
c175a657
L		 3144 changed = converted;
3145 if (h)
02a86693 3146 {
c175a657
L		 3147 if (h->got.refcount > 0)
3148 h->got.refcount -= 1;
02a86693 3149 }
c175a657 3150 else
02a86693 3151 {
c175a657
L		 3152 if (local_got_refcounts != NULL
3153 && local_got_refcounts[r_symndx] > 0)
3154 local_got_refcounts[r_symndx] -= 1;
02a86693 3155 }
daa67607
L		 3156 }
3157 }
3158
3159 if (contents != NULL
3160 && elf_section_data (sec)->this_hdr.contents != contents)
3161 {
c175a657 3162 if (!changed && !link_info->keep_memory)
daa67607
L		 3163 free (contents);
3164 else
3165 {
3166 /* Cache the section contents for elf_link_input_bfd. */
3167 elf_section_data (sec)->this_hdr.contents = contents;
3168 }
3169 }
3170
3171 if (elf_section_data (sec)->relocs != internal_relocs)
3172 {
c175a657 3173 if (!changed)
daa67607
L		 3174 free (internal_relocs);
3175 else
3176 elf_section_data (sec)->relocs = internal_relocs;
3177 }
3178
3179 return TRUE;
3180
3181 error_return:
3182 if (contents != NULL
3183 && elf_section_data (sec)->this_hdr.contents != contents)
3184 free (contents);
3185 if (internal_relocs != NULL
3186 && elf_section_data (sec)->relocs != internal_relocs)
3187 free (internal_relocs);
3188 return FALSE;
3189}
3190
252b5132
RH		 3191/* Set the sizes of the dynamic sections. */
3192
b34976b6 3193static bfd_boolean
23209a78 3194elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 3195{
6725bdbf 3196 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3197 bfd *dynobj;
3198 asection *s;
b34976b6 3199 bfd_boolean relocs;
0c715baa 3200 bfd *ibfd;
252b5132 3201
6725bdbf 3202 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3203 if (htab == NULL)
3204 return FALSE;
ebe50bae 3205 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 3206 if (dynobj == NULL)
3207 abort ();
252b5132 3208
0c715baa
AM		 3209 /* Set up .got offsets for local syms, and space for local dynamic
3210 relocs. */
c72f2fb2 3211 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
161d71a6
L		 3212 {
3213 bfd_signed_vma *local_got;
3214 bfd_signed_vma *end_local_got;
13ae64f3 3215 char *local_tls_type;
67a4f2b7 3216 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 3217 bfd_size_type locsymcount;
3218 Elf_Internal_Shdr *symtab_hdr;
3219 asection *srel;
6725bdbf 3220
0ffa91dd 3221 if (! is_i386_elf (ibfd))
161d71a6 3222 continue;
6725bdbf 3223
0c715baa
AM		 3224 for (s = ibfd->sections; s != NULL; s = s->next)
3225 {
e03a8ed8 3226 struct elf_dyn_relocs *p;
0c715baa 3227
02a86693 3228 if (!elf_i386_convert_load (ibfd, s, info))
daa67607
L		 3229 return FALSE;
3230
e03a8ed8 3231 for (p = ((struct elf_dyn_relocs *)
e81d3500 3232 elf_section_data (s)->local_dynrel);
ec338859
AM		 3233 p != NULL;
3234 p = p->next)
0c715baa 3235 {
ec338859
AM		 3236 if (!bfd_is_abs_section (p->sec)
3237 && bfd_is_abs_section (p->sec->output_section))
3238 {
3239 /* Input section has been discarded, either because
3240 it is a copy of a linkonce section or due to
3241 linker script /DISCARD/, so we'll be discarding
3242 the relocs too. */
3243 }
23209a78 3244 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 3245 && strcmp (p->sec->output_section->name,
3246 ".tls_vars") == 0)
3247 {
3248 /* Relocations in vxworks .tls_vars sections are
3249 handled specially by the loader. */
3250 }
248866a8 3251 else if (p->count != 0)
ec338859
AM		 3252 {
3253 srel = elf_section_data (p->sec)->sreloc;
eea6121a 3254 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 3255 if ((p->sec->output_section->flags & SEC_READONLY) != 0
3256 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 3257 {
3258 info->flags |= DF_TEXTREL;
0e1862bb 3259 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 3260 || info->error_textrel)
3261 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 3262 p->sec->owner, p->sec);
b70321a2 3263 }
ec338859 3264 }
0c715baa
AM		 3265 }
3266 }
3267
3268 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 3269 if (!local_got)
3270 continue;
6725bdbf 3271
0ffa91dd 3272 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 3273 locsymcount = symtab_hdr->sh_info;
3274 end_local_got = local_got + locsymcount;
13ae64f3 3275 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 3276 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 3277 s = htab->elf.sgot;
3278 srel = htab->elf.srelgot;
67a4f2b7
AO		 3279 for (; local_got < end_local_got;
3280 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 3281 {
67a4f2b7 3282 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 3283 if (*local_got > 0)
6725bdbf 3284 {
67a4f2b7
AO		 3285 if (GOT_TLS_GDESC_P (*local_tls_type))
3286 {
6de2ae4a 3287 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 3288 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 3289 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 3290 *local_got = (bfd_vma) -2;
3291 }
3292 if (! GOT_TLS_GDESC_P (*local_tls_type)
3293 || GOT_TLS_GD_P (*local_tls_type))
3294 {
3295 *local_got = s->size;
3296 s->size += 4;
3297 if (GOT_TLS_GD_P (*local_tls_type)
3298 || *local_tls_type == GOT_TLS_IE_BOTH)
3299 s->size += 4;
3300 }
0e1862bb 3301 if (bfd_link_pic (info)
67a4f2b7 3302 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 3303 || (*local_tls_type & GOT_TLS_IE))
3304 {
3305 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 3306 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 3307 else if (GOT_TLS_GD_P (*local_tls_type)
3308 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 3309 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 3310 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 3311 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 3312 }
6725bdbf 3313 }
161d71a6
L		 3314 else
3315 *local_got = (bfd_vma) -1;
6725bdbf 3316 }
252b5132 3317 }
6725bdbf 3318
13ae64f3
JJ		 3319 if (htab->tls_ldm_got.refcount > 0)
3320 {
3321 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
3322 relocs. */
6de2ae4a
L		 3323 htab->tls_ldm_got.offset = htab->elf.sgot->size;
3324 htab->elf.sgot->size += 8;
3325 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 3326 }
3327 else
3328 htab->tls_ldm_got.offset = -1;
3329
0c715baa
AM		 3330 /* Allocate global sym .plt and .got entries, and space for global
3331 sym dynamic relocs. */
eb4ff4d6 3332 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 3333
c25bc9fc
L		 3334 /* Allocate .plt and .got entries, and space for local symbols. */
3335 htab_traverse (htab->loc_hash_table,
3336 elf_i386_allocate_local_dynrelocs,
3337 info);
3338
67a4f2b7
AO		 3339 /* For every jump slot reserved in the sgotplt, reloc_count is
3340 incremented. However, when we reserve space for TLS descriptors,
3341 it's not incremented, so in order to compute the space reserved
3342 for them, it suffices to multiply the reloc count by the jump
e1f98742 3343 slot size.
caa0075c 3344
e1f98742
L		 3345 PR ld/13302: We start next_irelative_index at the end of .rela.plt
3346 so that R_386_IRELATIVE entries come last. */
6de2ae4a 3347 if (htab->elf.srelplt)
e1f98742
L		 3348 {
3349 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
3350 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
3351 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
3352 }
3353 else if (htab->elf.irelplt)
3354 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
3355
67a4f2b7 3356
a7b16ceb
L		 3357 if (htab->elf.sgotplt)
3358 {
3359 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 3360 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 3361 if ((htab->elf.hgot == NULL
3362 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 3363 && (htab->elf.sgotplt->size
3364 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 3365 && (htab->elf.splt == NULL
3366 || htab->elf.splt->size == 0)
3367 && (htab->elf.sgot == NULL
3368 || htab->elf.sgot->size == 0)
3369 && (htab->elf.iplt == NULL
3370 || htab->elf.iplt->size == 0)
3371 && (htab->elf.igotplt == NULL
3372 || htab->elf.igotplt->size == 0))
3373 htab->elf.sgotplt->size = 0;
3374 }
3375
9a2a56cc
AM		 3376
3377 if (htab->plt_eh_frame != NULL
3378 && htab->elf.splt != NULL
3379 && htab->elf.splt->size != 0
3380 && !bfd_is_abs_section (htab->elf.splt->output_section)
3381 && _bfd_elf_eh_frame_present (info))
3382 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
3383
5a15f56f
AM		 3384 /* We now have determined the sizes of the various dynamic sections.
3385 Allocate memory for them. */
b34976b6 3386 relocs = FALSE;
252b5132
RH		 3387 for (s = dynobj->sections; s != NULL; s = s->next)
3388 {
eac338cf
PB		 3389 bfd_boolean strip_section = TRUE;
3390
252b5132
RH		 3391 if ((s->flags & SEC_LINKER_CREATED) == 0)
3392 continue;
3393
6de2ae4a 3394 if (s == htab->elf.splt
9a2a56cc 3395 || s == htab->elf.sgot)
252b5132 3396 {
6725bdbf
AM		 3397 /* Strip this section if we don't need it; see the
3398 comment below. */
eac338cf
PB		 3399 /* We'd like to strip these sections if they aren't needed, but if
3400 we've exported dynamic symbols from them we must leave them.
3401 It's too late to tell BFD to get rid of the symbols. */
3402
7325306f 3403 if (htab->elf.hplt != NULL)
eac338cf 3404 strip_section = FALSE;
252b5132 3405 }
9a2a56cc
AM		 3406 else if (s == htab->elf.sgotplt
3407 || s == htab->elf.iplt
3408 || s == htab->elf.igotplt
dd7e64d4 3409 || s == htab->plt_got
9a2a56cc
AM		 3410 || s == htab->plt_eh_frame
3411 || s == htab->sdynbss)
3412 {
3413 /* Strip these too. */
3414 }
0112cd26 3415 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 3416 {
6de2ae4a
L		 3417 if (s->size != 0
3418 && s != htab->elf.srelplt
3419 && s != htab->srelplt2)
b34976b6 3420 relocs = TRUE;
252b5132 3421
0ac8d2ca
AM		 3422 /* We use the reloc_count field as a counter if we need
3423 to copy relocs into the output file. */
5ae0bfb6 3424 s->reloc_count = 0;
252b5132 3425 }
6725bdbf 3426 else
252b5132
RH		 3427 {
3428 /* It's not one of our sections, so don't allocate space. */
3429 continue;
3430 }
3431
c456f082 3432 if (s->size == 0)
252b5132 3433 {
0ac8d2ca
AM		 3434 /* If we don't need this section, strip it from the
3435 output file. This is mostly to handle .rel.bss and
3436 .rel.plt. We must create both sections in
3437 create_dynamic_sections, because they must be created
3438 before the linker maps input sections to output
3439 sections. The linker does that before
3440 adjust_dynamic_symbol is called, and it is that
3441 function which decides whether anything needs to go
3442 into these sections. */
c456f082
AM		 3443 if (strip_section)
3444 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3445 continue;
3446 }
3447
c456f082
AM		 3448 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3449 continue;
3450
f69da49f
AM		 3451 /* Allocate memory for the section contents. We use bfd_zalloc
3452 here in case unused entries are not reclaimed before the
3453 section's contents are written out. This should not happen,
3454 but this way if it does, we get a R_386_NONE reloc instead
3455 of garbage. */
a50b1753 3456 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 3457 if (s->contents == NULL)
b34976b6 3458 return FALSE;
252b5132
RH		 3459 }
3460
e41b3a13 3461 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3462 && htab->plt_eh_frame->contents != NULL)
3463 {
3464 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
3465 sizeof (elf_i386_eh_frame_plt));
3466 bfd_put_32 (dynobj, htab->elf.splt->size,
3467 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3468 }
e41b3a13 3469
ebe50bae 3470 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3471 {
3472 /* Add some entries to the .dynamic section. We fill in the
3473 values later, in elf_i386_finish_dynamic_sections, but we
3474 must add the entries now so that we get the correct size for
3475 the .dynamic section. The DT_DEBUG entry is filled in by the
3476 dynamic linker and used by the debugger. */
dc810e39 3477#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3478 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3479
0e1862bb 3480 if (bfd_link_executable (info))
252b5132 3481 {
dc810e39 3482 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3483 return FALSE;
252b5132
RH		 3484 }
3485
6de2ae4a 3486 if (htab->elf.splt->size != 0)
252b5132 3487 {
7c1e8d3e
L		 3488 /* DT_PLTGOT is used by prelink even if there is no PLT
3489 relocation. */
3490 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 3491 return FALSE;
7c1e8d3e
L		 3492
3493 if (htab->elf.srelplt->size != 0)
3494 {
3495 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3496 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3497 || !add_dynamic_entry (DT_JMPREL, 0))
3498 return FALSE;
3499 }
252b5132
RH		 3500 }
3501
3502 if (relocs)
3503 {
dc810e39
AM		 3504 if (!add_dynamic_entry (DT_REL, 0)
3505 || !add_dynamic_entry (DT_RELSZ, 0)
3506 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3507 return FALSE;
252b5132 3508
0c715baa
AM		 3509 /* If any dynamic relocs apply to a read-only section,
3510 then we need a DT_TEXTREL entry. */
248866a8 3511 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3512 elf_link_hash_traverse (&htab->elf,
3513 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3514
3515 if ((info->flags & DF_TEXTREL) != 0)
3516 {
2df3368d 3517 if (htab->readonly_dynrelocs_against_ifunc)
8efa2874
L		 3518 {
3519 info->callbacks->einfo
3520 (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
3521 bfd_set_error (bfd_error_bad_value);
3522 return FALSE;
3523 }
3524
0c715baa 3525 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3526 return FALSE;
0c715baa 3527 }
252b5132 3528 }
23209a78 3529 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3530 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3531 return FALSE;
252b5132 3532 }
dc810e39 3533#undef add_dynamic_entry
252b5132 3534
b34976b6 3535 return TRUE;
252b5132
RH		 3536}
3537
67a4f2b7
AO		 3538static bfd_boolean
3539elf_i386_always_size_sections (bfd *output_bfd,
3540 struct bfd_link_info *info)
3541{
3542 asection *tls_sec = elf_hash_table (info)->tls_sec;
3543
3544 if (tls_sec)
3545 {
3546 struct elf_link_hash_entry *tlsbase;
3547
3548 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3549 "_TLS_MODULE_BASE_",
3550 FALSE, FALSE, FALSE);
3551
3552 if (tlsbase && tlsbase->type == STT_TLS)
3553 {
4dfe6ac6 3554 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3555 struct bfd_link_hash_entry *bh = NULL;
3556 const struct elf_backend_data *bed
3557 = get_elf_backend_data (output_bfd);
3558
4dfe6ac6
NC		 3559 htab = elf_i386_hash_table (info);
3560 if (htab == NULL)
3561 return FALSE;
3562
67a4f2b7
AO		 3563 if (!(_bfd_generic_link_add_one_symbol
3564 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3565 tls_sec, 0, NULL, FALSE,
3566 bed->collect, &bh)))
3567 return FALSE;
9f03412a 3568
4dfe6ac6 3569 htab->tls_module_base = bh;
9f03412a 3570
67a4f2b7
AO		 3571 tlsbase = (struct elf_link_hash_entry *)bh;
3572 tlsbase->def_regular = 1;
3573 tlsbase->other = STV_HIDDEN;
576fa883 3574 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3575 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3576 }
3577 }
3578
3579 return TRUE;
3580}
3581
38701953
AM		 3582/* Set the correct type for an x86 ELF section. We do this by the
3583 section name, which is a hack, but ought to work. */
3584
b34976b6 3585static bfd_boolean
55fd94b0
AM		 3586elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3587 Elf_Internal_Shdr *hdr,
3588 asection *sec)
38701953 3589{
91d6fa6a 3590 const char *name;
38701953
AM		 3591
3592 name = bfd_get_section_name (abfd, sec);
3593
3594 /* This is an ugly, but unfortunately necessary hack that is
3595 needed when producing EFI binaries on x86. It tells
3596 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3597 containing ELF relocation info. We need this hack in order to
3598 be able to generate ELF binaries that can be translated into
3599 EFI applications (which are essentially COFF objects). Those
3600 files contain a COFF ".reloc" section inside an ELFNN object,
3601 which would normally cause BFD to segfault because it would
3602 attempt to interpret this section as containing relocation
3603 entries for section "oc". With this hack enabled, ".reloc"
3604 will be treated as a normal data section, which will avoid the
3605 segfault. However, you won't be able to create an ELFNN binary
3606 with a section named "oc" that needs relocations, but that's
3607 the kind of ugly side-effects you get when detecting section
3608 types based on their names... In practice, this limitation is
3609 unlikely to bite. */
3610 if (strcmp (name, ".reloc") == 0)
3611 hdr->sh_type = SHT_PROGBITS;
3612
b34976b6 3613 return TRUE;
38701953
AM		 3614}
3615
9f03412a
AO		 3616/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3617 executables. Rather than setting it to the beginning of the TLS
3618 section, we have to set it to the end. This function may be called
3619 multiple times, it is idempotent. */
3620
3621static void
eb4ff4d6 3622elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3623{
4dfe6ac6 3624 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3625 struct bfd_link_hash_entry *base;
3626
0e1862bb 3627 if (!bfd_link_executable (info))
9f03412a
AO		 3628 return;
3629
4dfe6ac6
NC		 3630 htab = elf_i386_hash_table (info);
3631 if (htab == NULL)
3632 return;
9f03412a 3633
4dfe6ac6
NC		 3634 base = htab->tls_module_base;
3635 if (base == NULL)
9f03412a
AO		 3636 return;
3637
4dfe6ac6 3638 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3639}
3640
13ae64f3
JJ		 3641/* Return the base VMA address which should be subtracted from real addresses
3642 when resolving @dtpoff relocation.
3643 This is PT_TLS segment p_vaddr. */
3644
3645static bfd_vma
eb4ff4d6 3646elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3647{
e1918d23
AM		 3648 /* If tls_sec is NULL, we should have signalled an error already. */
3649 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3650 return 0;
e1918d23 3651 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3652}
3653
3654/* Return the relocation value for @tpoff relocation
3655 if STT_TLS virtual address is ADDRESS. */
3656
3657static bfd_vma
eb4ff4d6 3658elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3659{
e1918d23 3660 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3661 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3662 bfd_vma static_tls_size;
13ae64f3 3663
e1918d23
AM		 3664 /* If tls_sec is NULL, we should have signalled an error already. */
3665 if (htab->tls_sec == NULL)
6a30718d 3666 return 0;
7dc98aea
RO		 3667
3668 /* Consider special static TLS alignment requirements. */
3669 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3670 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3671}
3672
252b5132
RH		 3673/* Relocate an i386 ELF section. */
3674
b34976b6 3675static bfd_boolean
55fd94b0
AM		 3676elf_i386_relocate_section (bfd *output_bfd,
3677 struct bfd_link_info *info,
3678 bfd *input_bfd,
3679 asection *input_section,
3680 bfd_byte *contents,
3681 Elf_Internal_Rela *relocs,
3682 Elf_Internal_Sym *local_syms,
3683 asection **local_sections)
252b5132 3684{
6725bdbf 3685 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3686 Elf_Internal_Shdr *symtab_hdr;
3687 struct elf_link_hash_entry **sym_hashes;
3688 bfd_vma *local_got_offsets;
67a4f2b7 3689 bfd_vma *local_tlsdesc_gotents;
252b5132 3690 Elf_Internal_Rela *rel;
60f2e42e 3691 Elf_Internal_Rela *wrel;
252b5132 3692 Elf_Internal_Rela *relend;
3348747a 3693 bfd_boolean is_vxworks_tls;
25e762b9 3694 unsigned plt_entry_size;
252b5132 3695
0ffa91dd 3696 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3697
c337a162
L		 3698 /* Skip if check_relocs failed. */
3699 if (input_section->check_relocs_failed)
3700 return FALSE;
3701
6725bdbf 3702 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3703 if (htab == NULL)
3704 return FALSE;
0ffa91dd 3705 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3706 sym_hashes = elf_sym_hashes (input_bfd);
3707 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3708 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3709 /* We have to handle relocations in vxworks .tls_vars sections
3710 specially, because the dynamic loader is 'weird'. */
23209a78 3711 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
0e1862bb 3712 && bfd_link_pic (info)
3348747a
NS		 3713 && !strcmp (input_section->output_section->name,
3714 ".tls_vars"));
252b5132 3715
eb4ff4d6 3716 elf_i386_set_tls_module_base (info);
9f03412a 3717
25e762b9
RM		 3718 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3719
60f2e42e 3720 rel = wrel = relocs;
252b5132 3721 relend = relocs + input_section->reloc_count;
60f2e42e 3722 for (; rel < relend; wrel++, rel++)
252b5132 3723 {
13ae64f3 3724 unsigned int r_type;
252b5132
RH		 3725 reloc_howto_type *howto;
3726 unsigned long r_symndx;
3727 struct elf_link_hash_entry *h;
dd7e64d4 3728 struct elf_i386_link_hash_entry *eh;
252b5132
RH		 3729 Elf_Internal_Sym *sym;
3730 asection *sec;
dd7e64d4 3731 bfd_vma off, offplt, plt_offset;
252b5132 3732 bfd_vma relocation;
b34976b6 3733 bfd_boolean unresolved_reloc;
252b5132 3734 bfd_reloc_status_type r;
1b452ec6 3735 unsigned int indx;
13ae64f3 3736 int tls_type;
1788fc08 3737 bfd_vma st_size;
dd7e64d4 3738 asection *resolved_plt;
aec6b87e 3739 bfd_boolean resolved_to_zero;
252b5132
RH		 3740
3741 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3742 if (r_type == R_386_GNU_VTINHERIT
3743 || r_type == R_386_GNU_VTENTRY)
18954b29
L		 3744 {
3745 if (wrel != rel)
3746 *wrel = *rel;
3747 continue;
3748 }
dc47f327 3749
55fd94b0 3750 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3751 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3752 >= R_386_ext - R_386_standard)
3753 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520 3754 >= R_386_ext2 - R_386_ext))
252b5132 3755 {
6ba842b6 3756 (*_bfd_error_handler)
d003868e
AM		 3757 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3758 input_bfd, input_section, r_type);
252b5132 3759 bfd_set_error (bfd_error_bad_value);
b34976b6 3760 return FALSE;
252b5132 3761 }
1b452ec6 3762 howto = elf_howto_table + indx;
252b5132
RH		 3763
3764 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3765 h = NULL;
3766 sym = NULL;
3767 sec = NULL;
b34976b6 3768 unresolved_reloc = FALSE;
252b5132
RH		 3769 if (r_symndx < symtab_hdr->sh_info)
3770 {
3771 sym = local_syms + r_symndx;
3772 sec = local_sections[r_symndx];
3773 relocation = (sec->output_section->vma
3774 + sec->output_offset
3775 + sym->st_value);
1788fc08 3776 st_size = sym->st_size;
ab96bf03
AM		 3777
3778 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3779 && ((sec->flags & SEC_MERGE) != 0
0e1862bb 3780 || (bfd_link_relocatable (info)
ab96bf03 3781 && sec->output_offset != 0)))
f8df10f4 3782 {
f8df10f4 3783 bfd_vma addend;
4a335f3d 3784 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3785
4a335f3d 3786 switch (howto->size)
f8df10f4 3787 {
4a335f3d
AM		 3788 case 0:
3789 addend = bfd_get_8 (input_bfd, where);
3790 if (howto->pc_relative)
3791 {
3792 addend = (addend ^ 0x80) - 0x80;
3793 addend += 1;
3794 }
3795 break;
3796 case 1:
3797 addend = bfd_get_16 (input_bfd, where);
3798 if (howto->pc_relative)
3799 {
3800 addend = (addend ^ 0x8000) - 0x8000;
3801 addend += 2;
3802 }
3803 break;
3804 case 2:
3805 addend = bfd_get_32 (input_bfd, where);
3806 if (howto->pc_relative)
3807 {
3808 addend = (addend ^ 0x80000000) - 0x80000000;
3809 addend += 4;
3810 }
3811 break;
3812 default:
3813 abort ();
f8df10f4
JJ		 3814 }
3815
0e1862bb 3816 if (bfd_link_relocatable (info))
ab96bf03
AM		 3817 addend += sec->output_offset;
3818 else
3819 {
3820 asection *msec = sec;
3821 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3822 addend);
3823 addend -= relocation;
3824 addend += msec->output_section->vma + msec->output_offset;
3825 }
4a335f3d
AM		 3826
3827 switch (howto->size)
3828 {
3829 case 0:
16a10388 3830 /* FIXME: overflow checks. */
4a335f3d
AM		 3831 if (howto->pc_relative)
3832 addend -= 1;
3833 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3834 break;
3835 case 1:
3836 if (howto->pc_relative)
3837 addend -= 2;
3838 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3839 break;
3840 case 2:
3841 if (howto->pc_relative)
3842 addend -= 4;
3843 bfd_put_32 (input_bfd, addend, where);
3844 break;
3845 }
f8df10f4 3846 }
0e1862bb 3847 else if (!bfd_link_relocatable (info)
1f85278f 3848 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3849 {
3850 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3851 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3852 FALSE);
c25bc9fc
L		 3853 if (h == NULL)
3854 abort ();
3855
23209a78 3856 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3857 h->root.u.def.value = sym->st_value;
3858 h->root.u.def.section = sec;
3859 }
252b5132
RH		 3860 }
3861 else
3862 {
3d540e93 3863 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3864 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3865
b2a8e766
AM		 3866 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3867 r_symndx, symtab_hdr, sym_hashes,
3868 h, sec, relocation,
62d887d4 3869 unresolved_reloc, warned, ignored);
1788fc08 3870 st_size = h->size;
252b5132
RH		 3871 }
3872
dbaa2011 3873 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 3874 {
3875 _bfd_clear_contents (howto, input_bfd, input_section,
3876 contents + rel->r_offset);
3877 wrel->r_offset = rel->r_offset;
3878 wrel->r_info = 0;
3879 wrel->r_addend = 0;
3880
3881 /* For ld -r, remove relocations in debug sections against
3882 sections defined in discarded sections. Not done for
3883 eh_frame editing code expects to be present. */
3884 if (bfd_link_relocatable (info)
3885 && (input_section->flags & SEC_DEBUGGING))
3886 wrel--;
3887
3888 continue;
3889 }
9635fe29 3890
0e1862bb 3891 if (bfd_link_relocatable (info))
2d5da473
L		 3892 {
3893 if (wrel != rel)
3894 *wrel = *rel;
3895 continue;
3896 }
ab96bf03 3897
cbe950e9
L		 3898 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3899 it here if it is defined in a non-shared object. */
3900 if (h != NULL
3901 && h->type == STT_GNU_IFUNC
3902 && h->def_regular)
3903 {
3904 asection *plt, *gotplt, *base_got;
3905 bfd_vma plt_index;
4c544807 3906 const char *name;
cbe950e9 3907
97dc35c8
L		 3908 if ((input_section->flags & SEC_ALLOC) == 0)
3909 {
3910 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3911 sections because such sections are not SEC_ALLOC and
3912 thus ld.so will not process them. */
3913 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 3914 continue;
97dc35c8
L		 3915 abort ();
3916 }
cbe950e9
L		 3917
3918 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3919 if (htab->elf.splt != NULL)
cbe950e9 3920 {
6de2ae4a
L		 3921 plt = htab->elf.splt;
3922 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3923 }
3924 else
3925 {
6de2ae4a
L		 3926 plt = htab->elf.iplt;
3927 gotplt = htab->elf.igotplt;
cbe950e9
L		 3928 }
3929
cbe950e9
L		 3930 switch (r_type)
3931 {
3932 default:
233cc9c1 3933 break;
cbe950e9
L		 3934
3935 case R_386_GOT32:
02a86693 3936 case R_386_GOT32X:
6de2ae4a 3937 base_got = htab->elf.sgot;
cbe950e9
L		 3938 off = h->got.offset;
3939
7afd84dc 3940 if (base_got == NULL)
cbe950e9
L		 3941 abort ();
3942
7afd84dc 3943 if (off == (bfd_vma) -1)
cbe950e9 3944 {
7afd84dc
L		 3945 /* We can't use h->got.offset here to save state, or
3946 even just remember the offset, as finish_dynamic_symbol
3947 would use that as offset into .got. */
6bbec505 3948
233cc9c1
L		 3949 if (h->plt.offset == (bfd_vma) -1)
3950 abort ();
3951
6de2ae4a 3952 if (htab->elf.splt != NULL)
7afd84dc 3953 {
25e762b9 3954 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3955 off = (plt_index + 3) * 4;
6de2ae4a 3956 base_got = htab->elf.sgotplt;
7afd84dc 3957 }
cbe950e9
L		 3958 else
3959 {
25e762b9 3960 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3961 off = plt_index * 4;
6de2ae4a 3962 base_got = htab->elf.igotplt;
7afd84dc
L		 3963 }
3964
3965 if (h->dynindx == -1
3966 || h->forced_local
3967 || info->symbolic)
3968 {
3969 /* This references the local defitionion. We must
3970 initialize this entry in the global offset table.
3971 Since the offset must always be a multiple of 8,
3972 we use the least significant bit to record
3973 whether we have initialized it already.
3974
3975 When doing a dynamic link, we create a .rela.got
3976 relocation entry to initialize the value. This
3977 is done in the finish_dynamic_symbol routine. */
3978 if ((off & 1) != 0)
3979 off &= ~1;
3980 else
3981 {
3982 bfd_put_32 (output_bfd, relocation,
3983 base_got->contents + off);
3984 h->got.offset |= 1;
3985 }
cbe950e9 3986 }
cbe950e9 3987
7afd84dc 3988 relocation = off;
7afd84dc
L		 3989 }
3990 else
ca8c86ef
L		 3991 relocation = (base_got->output_section->vma
3992 + base_got->output_offset + off
3993 - gotplt->output_section->vma
3994 - gotplt->output_offset);
3995
712ec279
L		 3996 if ((*(contents + rel->r_offset - 1) & 0xc7) == 0x5)
3997 {
3998 if (bfd_link_pic (info))
3999 goto disallow_got32;
4000
4001 /* Add the GOT base if there is no base register. */
4002 relocation += (gotplt->output_section->vma
4003 + gotplt->output_offset);
4004 }
4005 else if (htab->elf.splt == NULL)
4006 {
4007 /* Adjust for static executables. */
4008 relocation += gotplt->output_offset;
4009 }
0018b0a3 4010
cbe950e9 4011 goto do_relocation;
233cc9c1
L		 4012 }
4013
4014 if (h->plt.offset == (bfd_vma) -1)
4015 {
4016 /* Handle static pointers of STT_GNU_IFUNC symbols. */
4017 if (r_type == R_386_32
4018 && (input_section->flags & SEC_CODE) == 0)
4019 goto do_ifunc_pointer;
4020 goto bad_ifunc_reloc;
4021 }
4022
4023 relocation = (plt->output_section->vma
4024 + plt->output_offset + h->plt.offset);
4025
4026 switch (r_type)
4027 {
4028 default:
4029bad_ifunc_reloc:
4030 if (h->root.root.string)
4031 name = h->root.root.string;
4032 else
4033 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4034 NULL);
4035 (*_bfd_error_handler)
4036 (_("%B: relocation %s against STT_GNU_IFUNC "
4037 "symbol `%s' isn't supported"), input_bfd,
4038 howto->name, name);
4039 bfd_set_error (bfd_error_bad_value);
4040 return FALSE;
4041
4042 case R_386_32:
4043 /* Generate dynamic relcoation only when there is a
4044 non-GOT reference in a shared object. */
4045 if ((bfd_link_pic (info) && h->non_got_ref)
4046 || h->plt.offset == (bfd_vma) -1)
4047 {
4048 Elf_Internal_Rela outrel;
4049 asection *sreloc;
4050 bfd_vma offset;
4051
4052do_ifunc_pointer:
4053 /* Need a dynamic relocation to get the real function
4054 adddress. */
4055 offset = _bfd_elf_section_offset (output_bfd,
4056 info,
4057 input_section,
4058 rel->r_offset);
4059 if (offset == (bfd_vma) -1
4060 || offset == (bfd_vma) -2)
4061 abort ();
4062
4063 outrel.r_offset = (input_section->output_section->vma
4064 + input_section->output_offset
4065 + offset);
4066
4067 if (h->dynindx == -1
4068 || h->forced_local
4069 || bfd_link_executable (info))
4070 {
4071 /* This symbol is resolved locally. */
4072 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
4073 bfd_put_32 (output_bfd,
4074 (h->root.u.def.value
4075 + h->root.u.def.section->output_section->vma
4076 + h->root.u.def.section->output_offset),
4077 contents + offset);
4078 }
4079 else
4080 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
4081
4082 /* Dynamic relocations are stored in
4083 1. .rel.ifunc section in PIC object.
4084 2. .rel.got section in dynamic executable.
4085 3. .rel.iplt section in static executable. */
4086 if (bfd_link_pic (info))
4087 sreloc = htab->elf.irelifunc;
4088 else if (htab->elf.splt != NULL)
4089 sreloc = htab->elf.srelgot;
4090 else
4091 sreloc = htab->elf.irelplt;
4092 elf_append_rel (output_bfd, sreloc, &outrel);
4093
4094 /* If this reloc is against an external symbol, we
4095 do not want to fiddle with the addend. Otherwise,
4096 we need to include the symbol value so that it
4097 becomes an addend for the dynamic reloc. For an
4098 internal symbol, we have updated addend. */
4099 continue;
4100 }
4101 /* FALLTHROUGH */
4102 case R_386_PC32:
4103 case R_386_PLT32:
4104 goto do_relocation;
cbe950e9
L		 4105
4106 case R_386_GOTOFF:
4107 relocation -= (gotplt->output_section->vma
4108 + gotplt->output_offset);
4109 goto do_relocation;
4110 }
4111 }
4112
04ebc307 4113 eh = (struct elf_i386_link_hash_entry *) h;
aec6b87e 4114 resolved_to_zero = (eh != NULL
e62b9723
L		 4115 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
4116 eh->has_got_reloc,
4117 eh));
aec6b87e 4118
252b5132
RH		 4119 switch (r_type)
4120 {
02a86693
L		 4121 case R_386_GOT32X:
4122 /* Avoid optimizing _DYNAMIC since ld.so may use its
4123 link-time address. */
4124 if (h == htab->elf.hdynamic)
4125 goto r_386_got32;
4126
4127 if (bfd_link_pic (info))
4128 {
4129 /* It is OK to convert mov to lea and convert indirect
4130 branch to direct branch. It is OK to convert adc,
4131 add, and, cmp, or, sbb, sub, test, xor only when PIC
4132 is false. */
02e2aef8
L		 4133 unsigned int opcode, addend;
4134 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
4135 if (addend != 0)
4136 goto r_386_got32;
4137 opcode = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
02a86693
L		 4138 if (opcode != 0x8b && opcode != 0xff)
4139 goto r_386_got32;
4140 }
4141
4142 /* Resolve "mov GOT[(%reg)], %reg",
4143 "call/jmp *GOT[(%reg)]", "test %reg, foo@GOT[(%reg)]"
4144 and "binop foo@GOT[(%reg)], %reg". */
4145 if (h == NULL
4146 || (h->plt.offset == (bfd_vma) -1
4147 && h->got.offset == (bfd_vma) -1)
4148 || htab->elf.sgotplt == NULL)
4149 abort ();
4150
4151 offplt = (htab->elf.sgotplt->output_section->vma
4152 + htab->elf.sgotplt->output_offset);
4153
4154 /* It is relative to .got.plt section. */
4155 if (h->got.offset != (bfd_vma) -1)
32875eb1
L		 4156 /* Use GOT entry. Mask off the least significant bit in
4157 GOT offset which may be set by R_386_GOT32 processing
4158 below. */
02a86693
L		 4159 relocation = (htab->elf.sgot->output_section->vma
4160 + htab->elf.sgot->output_offset
32875eb1 4161 + (h->got.offset & ~1) - offplt);
02a86693
L		 4162 else
4163 /* Use GOTPLT entry. */
4164 relocation = (h->plt.offset / plt_entry_size - 1 + 3) * 4;
4165
4166 if (!bfd_link_pic (info))
4167 {
4168 /* If not PIC, add the .got.plt section address for
a3718e9e 4169 baseless addressing. */
02a86693 4170 unsigned int modrm;
02e2aef8 4171 modrm = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
02a86693
L		 4172 if ((modrm & 0xc7) == 0x5)
4173 relocation += offplt;
4174 }
4175
4176 unresolved_reloc = FALSE;
4177 break;
4178
252b5132 4179 case R_386_GOT32:
02a86693 4180r_386_got32:
252b5132
RH		 4181 /* Relocation is to the entry for this symbol in the global
4182 offset table. */
6de2ae4a 4183 if (htab->elf.sgot == NULL)
ffb2e45b 4184 abort ();
252b5132
RH		 4185
4186 if (h != NULL)
4187 {
b34976b6 4188 bfd_boolean dyn;
252b5132
RH		 4189
4190 off = h->got.offset;
ebe50bae 4191 dyn = htab->elf.dynamic_sections_created;
0e1862bb
L		 4192 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4193 bfd_link_pic (info),
4194 h)
4195 || (bfd_link_pic (info)
586119b3 4196 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 4197 || (ELF_ST_VISIBILITY (h->other)
4198 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 4199 {
4200 /* This is actually a static link, or it is a
4201 -Bsymbolic link and the symbol is defined
4202 locally, or the symbol was forced to be local
4203 because of a version file. We must initialize
4204 this entry in the global offset table. Since the
4205 offset must always be a multiple of 4, we use the
4206 least significant bit to record whether we have
4207 initialized it already.
4208
4209 When doing a dynamic link, we create a .rel.got
4210 relocation entry to initialize the value. This
4211 is done in the finish_dynamic_symbol routine. */
4212 if ((off & 1) != 0)
4213 off &= ~1;
4214 else
4215 {
4216 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4217 htab->elf.sgot->contents + off);
252b5132
RH		 4218 h->got.offset |= 1;
4219 }
4220 }
8c694914 4221 else
b34976b6 4222 unresolved_reloc = FALSE;
252b5132
RH		 4223 }
4224 else
4225 {
ffb2e45b
AM		 4226 if (local_got_offsets == NULL)
4227 abort ();
252b5132
RH		 4228
4229 off = local_got_offsets[r_symndx];
4230
4231 /* The offset must always be a multiple of 4. We use
83be169b
AM		 4232 the least significant bit to record whether we have
4233 already generated the necessary reloc. */
252b5132
RH		 4234 if ((off & 1) != 0)
4235 off &= ~1;
4236 else
4237 {
6725bdbf 4238 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4239 htab->elf.sgot->contents + off);
252b5132 4240
0e1862bb 4241 if (bfd_link_pic (info))
252b5132 4242 {
947216bf
AM		 4243 asection *s;
4244 Elf_Internal_Rela outrel;
252b5132 4245
6de2ae4a 4246 s = htab->elf.srelgot;
947216bf 4247 if (s == NULL)
ffb2e45b 4248 abort ();
252b5132 4249
6de2ae4a
L		 4250 outrel.r_offset = (htab->elf.sgot->output_section->vma
4251 + htab->elf.sgot->output_offset
252b5132
RH		 4252 + off);
4253 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 4254 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 4255 }
4256
4257 local_got_offsets[r_symndx] |= 1;
4258 }
252b5132
RH		 4259 }
4260
ffb2e45b
AM		 4261 if (off >= (bfd_vma) -2)
4262 abort ();
4263
74d7f0aa
L		 4264 relocation = (htab->elf.sgot->output_section->vma
4265 + htab->elf.sgot->output_offset + off);
4266 if ((*(contents + rel->r_offset - 1) & 0xc7) == 0x5)
4267 {
4268 if (bfd_link_pic (info))
4269 {
4270 /* For PIC, disallow R_386_GOT32 without a base
4271 register since we don't know what the GOT base
4272 is. */
4273 const char *name;
4274
712ec279 4275disallow_got32:
74d7f0aa
L		 4276 if (h == NULL)
4277 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4278 NULL);
4279 else
4280 name = h->root.root.string;
4281
4282 (*_bfd_error_handler)
712ec279
L		 4283 (_("%B: direct GOT relocation %s against `%s' without base register can not be used when making a shared object"),
4284 input_bfd, howto->name, name);
74d7f0aa
L		 4285 bfd_set_error (bfd_error_bad_value);
4286 return FALSE;
4287 }
4288 }
4289 else
4290 {
4291 /* Subtract the .got.plt section address only with a base
4292 register. */
4293 relocation -= (htab->elf.sgotplt->output_section->vma
4294 + htab->elf.sgotplt->output_offset);
4295 }
4296
252b5132
RH		 4297 break;
4298
4299 case R_386_GOTOFF:
4300 /* Relocation is relative to the start of the global offset
4301 table. */
4302
3d949995
L		 4303 /* Check to make sure it isn't a protected function or data
4304 symbol for shared library since it may not be local when
4305 used as function address or with copy relocation. We also
e3c0e327 4306 need to make sure that a symbol is referenced locally. */
0e1862bb 4307 if (!bfd_link_executable (info) && h)
90f487df 4308 {
41bed6dd
L		 4309 if (!h->def_regular)
4310 {
4311 const char *v;
4312
4313 switch (ELF_ST_VISIBILITY (h->other))
4314 {
4315 case STV_HIDDEN:
4316 v = _("hidden symbol");
4317 break;
4318 case STV_INTERNAL:
4319 v = _("internal symbol");
4320 break;
4321 case STV_PROTECTED:
4322 v = _("protected symbol");
4323 break;
4324 default:
4325 v = _("symbol");
4326 break;
4327 }
4328
4329 (*_bfd_error_handler)
4330 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
4331 input_bfd, v, h->root.root.string);
4332 bfd_set_error (bfd_error_bad_value);
4333 return FALSE;
4334 }
d5597ebc 4335 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
3d949995
L		 4336 && (h->type == STT_FUNC
4337 || h->type == STT_OBJECT)
41bed6dd
L		 4338 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
4339 {
4340 (*_bfd_error_handler)
3d949995
L		 4341 (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
4342 input_bfd,
4343 h->type == STT_FUNC ? "function" : "data",
4344 h->root.root.string);
41bed6dd
L		 4345 bfd_set_error (bfd_error_bad_value);
4346 return FALSE;
4347 }
90f487df
L		 4348 }
4349
8c37241b
JJ		 4350 /* Note that sgot is not involved in this
4351 calculation. We always want the start of .got.plt. If we
4352 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 4353 permitted by the ABI, we might have to change this
4354 calculation. */
6de2ae4a
L		 4355 relocation -= htab->elf.sgotplt->output_section->vma
4356 + htab->elf.sgotplt->output_offset;
252b5132
RH		 4357 break;
4358
4359 case R_386_GOTPC:
4360 /* Use global offset table as symbol value. */
6de2ae4a
L		 4361 relocation = htab->elf.sgotplt->output_section->vma
4362 + htab->elf.sgotplt->output_offset;
b34976b6 4363 unresolved_reloc = FALSE;
252b5132
RH		 4364 break;
4365
4366 case R_386_PLT32:
4367 /* Relocation is to the entry for this symbol in the
4368 procedure linkage table. */
4369
dd5724d5 4370 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 4371 without using the procedure linkage table. */
252b5132
RH		 4372 if (h == NULL)
4373 break;
4374
dd7e64d4
L		 4375 if ((h->plt.offset == (bfd_vma) -1
4376 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 4377 || htab->elf.splt == NULL)
252b5132
RH		 4378 {
4379 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 4380 happens when statically linking PIC code, or when
4381 using -Bsymbolic. */
252b5132
RH		 4382 break;
4383 }
4384
dd7e64d4
L		 4385 if (h->plt.offset != (bfd_vma) -1)
4386 {
4387 resolved_plt = htab->elf.splt;
4388 plt_offset = h->plt.offset;
4389 }
4390 else
4391 {
4392 resolved_plt = htab->plt_got;
4393 plt_offset = eh->plt_got.offset;
4394 }
4395
4396 relocation = (resolved_plt->output_section->vma
4397 + resolved_plt->output_offset
4398 + plt_offset);
b34976b6 4399 unresolved_reloc = FALSE;
252b5132
RH		 4400 break;
4401
1788fc08 4402 case R_386_SIZE32:
1788fc08
L		 4403 /* Set to symbol size. */
4404 relocation = st_size;
4405 /* Fall through. */
4406
252b5132
RH		 4407 case R_386_32:
4408 case R_386_PC32:
3348747a
NS		 4409 if ((input_section->flags & SEC_ALLOC) == 0
4410 || is_vxworks_tls)
ec338859
AM		 4411 break;
4412
aec6b87e
L		 4413 /* Copy dynamic function pointer relocations. Don't generate
4414 dynamic relocations against resolved undefined weak symbols
4415 in PIE, except for R_386_PC32. */
0e1862bb 4416 if ((bfd_link_pic (info)
ef5aade5 4417 && (h == NULL
aec6b87e
L		 4418 || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4419 && (!resolved_to_zero
4420 || r_type == R_386_PC32))
4421 || h->root.type != bfd_link_hash_undefweak))
1788fc08 4422 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 4423 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845 4424 || (ELIMINATE_COPY_RELOCS
0e1862bb 4425 && !bfd_link_pic (info)
12d0ee4a
AM		 4426 && h != NULL
4427 && h->dynindx != -1
aec6b87e
L		 4428 && (!h->non_got_ref
4429 || eh->func_pointer_refcount > 0
4430 || (h->root.type == bfd_link_hash_undefweak
4431 && !resolved_to_zero))
bae420ef
L		 4432 && ((h->def_dynamic && !h->def_regular)
4433 /* Undefined weak symbol is bound locally when
4434 PIC is false. */
4435 || h->root.type == bfd_link_hash_undefweak)))
252b5132 4436 {
947216bf 4437 Elf_Internal_Rela outrel;
b34976b6 4438 bfd_boolean skip, relocate;
0c715baa 4439 asection *sreloc;
252b5132
RH		 4440
4441 /* When generating a shared object, these relocations
4442 are copied into the output file to be resolved at run
4443 time. */
4444
b34976b6
AM		 4445 skip = FALSE;
4446 relocate = FALSE;
252b5132 4447
c629eae0
JJ		 4448 outrel.r_offset =
4449 _bfd_elf_section_offset (output_bfd, info, input_section,
4450 rel->r_offset);
4451 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4452 skip = TRUE;
0bb2d96a 4453 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4454 skip = TRUE, relocate = TRUE;
252b5132
RH		 4455 outrel.r_offset += (input_section->output_section->vma
4456 + input_section->output_offset);
4457
4458 if (skip)
0bb2d96a 4459 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 4460 else if (h != NULL
4461 && h->dynindx != -1
4462 && (r_type == R_386_PC32
4e0c91e4
L		 4463 || !(bfd_link_executable (info)
4464 || SYMBOLIC_BIND (info, h))
f5385ebf 4465 || !h->def_regular))
0bb2d96a 4466 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 4467 else
4468 {
5a15f56f 4469 /* This symbol is local, or marked to become local. */
b34976b6 4470 relocate = TRUE;
5a15f56f 4471 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 4472 }
4473
cbe950e9 4474 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 4475
62d78908
L		 4476 if (sreloc == NULL || sreloc->contents == NULL)
4477 {
4478 r = bfd_reloc_notsupported;
4479 goto check_relocation_error;
4480 }
0c715baa 4481
59d6ffb2 4482 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 4483
4484 /* If this reloc is against an external symbol, we do
4485 not want to fiddle with the addend. Otherwise, we
4486 need to include the symbol value so that it becomes
4487 an addend for the dynamic reloc. */
0f88be7a 4488 if (! relocate)
252b5132
RH		 4489 continue;
4490 }
252b5132
RH		 4491 break;
4492
37e55690 4493 case R_386_TLS_IE:
0e1862bb 4494 if (!bfd_link_executable (info))
37e55690 4495 {
947216bf 4496 Elf_Internal_Rela outrel;
37e55690 4497 asection *sreloc;
37e55690
JJ		 4498
4499 outrel.r_offset = rel->r_offset
4500 + input_section->output_section->vma
4501 + input_section->output_offset;
4502 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4503 sreloc = elf_section_data (input_section)->sreloc;
4504 if (sreloc == NULL)
4505 abort ();
59d6ffb2 4506 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4507 }
4508 /* Fall through */
4509
13ae64f3 4510 case R_386_TLS_GD:
67a4f2b7
AO		 4511 case R_386_TLS_GOTDESC:
4512 case R_386_TLS_DESC_CALL:
13ae64f3 4513 case R_386_TLS_IE_32:
37e55690 4514 case R_386_TLS_GOTIE:
13ae64f3
JJ		 4515 tls_type = GOT_UNKNOWN;
4516 if (h == NULL && local_got_offsets)
4517 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
4518 else if (h != NULL)
142411ca 4519 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 4520 if (tls_type == GOT_TLS_IE)
4521 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 4522
4523 if (! elf_i386_tls_transition (info, input_bfd,
4524 input_section, contents,
4525 symtab_hdr, sym_hashes,
4526 &r_type, tls_type, rel,
bedfd056 4527 relend, h, r_symndx, TRUE))
142411ca 4528 return FALSE;
13ae64f3
JJ		 4529
4530 if (r_type == R_386_TLS_LE_32)
4531 {
82e51918 4532 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 4533 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
4534 {
142411ca 4535 unsigned int type;
13ae64f3
JJ		 4536 bfd_vma roff;
4537
4538 /* GD->LE transition. */
6eaa7fb5 4539 type = *(contents + rel->r_offset - 2);
13ae64f3
JJ		 4540 if (type == 0x04)
4541 {
6eaa7fb5
L		 4542 /* Change
4543 leal foo@tlsgd(,%ebx,1), %eax
4544 call ___tls_get_addr@PLT
4545 into:
4546 movl %gs:0, %eax
4547 subl $foo@tpoff, %eax
13ae64f3 4548 (6 byte form of subl). */
142411ca 4549 roff = rel->r_offset + 5;
13ae64f3
JJ		 4550 }
4551 else
4552 {
6eaa7fb5
L		 4553 /* Change
4554 leal foo@tlsgd(%ebx), %eax
4555 call ___tls_get_addr@PLT
4556 nop
4557 or
4558 leal foo@tlsgd(%reg), %eax
4559 call *___tls_get_addr@GOT(%reg)
4560 which may be converted to
4561 addr32 call ___tls_get_addr
4562 into:
4563 movl %gs:0, %eax; subl $foo@tpoff, %eax
142411ca 4564 (6 byte form of subl). */
142411ca 4565 roff = rel->r_offset + 6;
13ae64f3 4566 }
6eaa7fb5
L		 4567 memcpy (contents + roff - 8,
4568 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
eb4ff4d6 4569 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 4570 contents + roff);
6eaa7fb5 4571 /* Skip R_386_PC32, R_386_PLT32 and R_386_GOT32X. */
13ae64f3 4572 rel++;
60f2e42e 4573 wrel++;
13ae64f3
JJ		 4574 continue;
4575 }
67a4f2b7
AO		 4576 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4577 {
4578 /* GDesc -> LE transition.
4579 It's originally something like:
4580 leal x@tlsdesc(%ebx), %eax
4581
4582 leal x@ntpoff, %eax
4583
4584 Registers other than %eax may be set up here. */
4585
142411ca 4586 unsigned int val;
67a4f2b7
AO		 4587 bfd_vma roff;
4588
67a4f2b7 4589 roff = rel->r_offset;
67a4f2b7 4590 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 4591
4592 /* Now modify the instruction as appropriate. */
4593 /* aoliva FIXME: remove the above and xor the byte
4594 below with 0x86. */
4595 bfd_put_8 (output_bfd, val ^ 0x86,
4596 contents + roff - 1);
eb4ff4d6 4597 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 4598 contents + roff);
4599 continue;
4600 }
4601 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4602 {
4603 /* GDesc -> LE transition.
4604 It's originally:
4605 call *(%eax)
4606 Turn it into:
142411ca 4607 xchg %ax,%ax */
67a4f2b7 4608
67a4f2b7 4609 bfd_vma roff;
6bbec505 4610
67a4f2b7 4611 roff = rel->r_offset;
10efb593 4612 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4613 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4614 continue;
4615 }
37e55690 4616 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 4617 {
142411ca 4618 unsigned int val;
13ae64f3
JJ		 4619
4620 /* IE->LE transition:
37e55690
JJ		 4621 Originally it can be one of:
4622 movl foo, %eax
4623 movl foo, %reg
4624 addl foo, %reg
4625 We change it into:
4626 movl $foo, %eax
4627 movl $foo, %reg
4628 addl $foo, %reg. */
37e55690 4629 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 4630 if (val == 0xa1)
4631 {
4632 /* movl foo, %eax. */
55fd94b0
AM		 4633 bfd_put_8 (output_bfd, 0xb8,
4634 contents + rel->r_offset - 1);
37e55690 4635 }
299bf759 4636 else
37e55690 4637 {
142411ca
L		 4638 unsigned int type;
4639
55fd94b0
AM		 4640 type = bfd_get_8 (input_bfd,
4641 contents + rel->r_offset - 2);
299bf759 4642 switch (type)
26e41594 4643 {
299bf759
L		 4644 case 0x8b:
4645 /* movl */
299bf759
L		 4646 bfd_put_8 (output_bfd, 0xc7,
4647 contents + rel->r_offset - 2);
4648 bfd_put_8 (output_bfd,
4649 0xc0 | ((val >> 3) & 7),
4650 contents + rel->r_offset - 1);
4651 break;
4652 case 0x03:
4653 /* addl */
299bf759
L		 4654 bfd_put_8 (output_bfd, 0x81,
4655 contents + rel->r_offset - 2);
4656 bfd_put_8 (output_bfd,
4657 0xc0 | ((val >> 3) & 7),
4658 contents + rel->r_offset - 1);
4659 break;
4660 default:
4661 BFD_FAIL ();
4662 break;
26e41594 4663 }
37e55690 4664 }
eb4ff4d6 4665 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4666 contents + rel->r_offset);
4667 continue;
4668 }
4669 else
4670 {
4671 unsigned int val, type;
4672
4673 /* {IE_32,GOTIE}->LE transition:
4674 Originally it can be one of:
13ae64f3 4675 subl foo(%reg1), %reg2
13ae64f3 4676 movl foo(%reg1), %reg2
37e55690 4677 addl foo(%reg1), %reg2
13ae64f3
JJ		 4678 We change it into:
4679 subl $foo, %reg2
37e55690
JJ		 4680 movl $foo, %reg2 (6 byte form)
4681 addl $foo, %reg2. */
13ae64f3
JJ		 4682 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4683 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4684 if (type == 0x8b)
4685 {
4686 /* movl */
13ae64f3
JJ		 4687 bfd_put_8 (output_bfd, 0xc7,
4688 contents + rel->r_offset - 2);
4689 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4690 contents + rel->r_offset - 1);
4691 }
4692 else if (type == 0x2b)
4693 {
4694 /* subl */
13ae64f3
JJ		 4695 bfd_put_8 (output_bfd, 0x81,
4696 contents + rel->r_offset - 2);
4697 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4698 contents + rel->r_offset - 1);
4699 }
37e55690
JJ		 4700 else if (type == 0x03)
4701 {
4702 /* addl */
4703 bfd_put_8 (output_bfd, 0x81,
4704 contents + rel->r_offset - 2);
4705 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4706 contents + rel->r_offset - 1);
4707 }
13ae64f3
JJ		 4708 else
4709 BFD_FAIL ();
37e55690 4710 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4711 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4712 contents + rel->r_offset);
4713 else
eb4ff4d6 4714 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4715 contents + rel->r_offset);
13ae64f3
JJ		 4716 continue;
4717 }
4718 }
4719
6de2ae4a 4720 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4721 abort ();
4722
4723 if (h != NULL)
67a4f2b7
AO		 4724 {
4725 off = h->got.offset;
4726 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4727 }
13ae64f3
JJ		 4728 else
4729 {
4730 if (local_got_offsets == NULL)
4731 abort ();
4732
4733 off = local_got_offsets[r_symndx];
67a4f2b7 4734 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4735 }
4736
4737 if ((off & 1) != 0)
4738 off &= ~1;
26e41594 4739 else
13ae64f3 4740 {
947216bf 4741 Elf_Internal_Rela outrel;
91d6fa6a 4742 int dr_type;
67a4f2b7 4743 asection *sreloc;
13ae64f3 4744
6de2ae4a 4745 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4746 abort ();
4747
67a4f2b7
AO		 4748 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4749
4750 if (GOT_TLS_GDESC_P (tls_type))
4751 {
59d6ffb2 4752 bfd_byte *loc;
67a4f2b7
AO		 4753 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4754 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4755 <= htab->elf.sgotplt->size);
4756 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4757 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4758 + offplt
4759 + htab->sgotplt_jump_table_size);
6de2ae4a 4760 sreloc = htab->elf.srelplt;
67a4f2b7 4761 loc = sreloc->contents;
5ae0bfb6
RS		 4762 loc += (htab->next_tls_desc_index++
4763 * sizeof (Elf32_External_Rel));
67a4f2b7 4764 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4765 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4766 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4767 if (indx == 0)
4768 {
4769 BFD_ASSERT (! unresolved_reloc);
4770 bfd_put_32 (output_bfd,
eb4ff4d6 4771 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4772 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4773 + htab->sgotplt_jump_table_size + 4);
4774 }
4775 else
4776 {
4777 bfd_put_32 (output_bfd, 0,
6de2ae4a 4778 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4779 + htab->sgotplt_jump_table_size + 4);
4780 }
4781 }
4782
6de2ae4a 4783 sreloc = htab->elf.srelgot;
67a4f2b7 4784
6de2ae4a
L		 4785 outrel.r_offset = (htab->elf.sgot->output_section->vma
4786 + htab->elf.sgot->output_offset + off);
13ae64f3 4787
67a4f2b7 4788 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4789 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4790 else if (GOT_TLS_GDESC_P (tls_type))
4791 goto dr_done;
37e55690
JJ		 4792 else if (tls_type == GOT_TLS_IE_POS)
4793 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4794 else
4795 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4796
37e55690 4797 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4798 bfd_put_32 (output_bfd,
4799 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4800 htab->elf.sgot->contents + off);
37e55690 4801 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4802 bfd_put_32 (output_bfd,
eb4ff4d6 4803 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4804 htab->elf.sgot->contents + off);
67a4f2b7 4805 else if (dr_type != R_386_TLS_DESC)
c366c25e 4806 bfd_put_32 (output_bfd, 0,
6de2ae4a 4807 htab->elf.sgot->contents + off);
13ae64f3 4808 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4809
59d6ffb2 4810 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4811
67a4f2b7 4812 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4813 {
4814 if (indx == 0)
4815 {
82e51918 4816 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4817 bfd_put_32 (output_bfd,
eb4ff4d6 4818 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4819 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4820 }
4821 else
4822 {
4823 bfd_put_32 (output_bfd, 0,
6de2ae4a 4824 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4825 outrel.r_info = ELF32_R_INFO (indx,
4826 R_386_TLS_DTPOFF32);
4827 outrel.r_offset += 4;
59d6ffb2 4828 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4829 }
4830 }
37e55690
JJ		 4831 else if (tls_type == GOT_TLS_IE_BOTH)
4832 {
4833 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4834 (indx == 0
4835 ? relocation - elf_i386_dtpoff_base (info)
4836 : 0),
6de2ae4a 4837 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4838 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4839 outrel.r_offset += 4;
59d6ffb2 4840 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4841 }
13ae64f3 4842
67a4f2b7 4843 dr_done:
13ae64f3
JJ		 4844 if (h != NULL)
4845 h->got.offset |= 1;
4846 else
4847 local_got_offsets[r_symndx] |= 1;
4848 }
4849
67a4f2b7
AO		 4850 if (off >= (bfd_vma) -2
4851 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4852 abort ();
67a4f2b7
AO		 4853 if (r_type == R_386_TLS_GOTDESC
4854 || r_type == R_386_TLS_DESC_CALL)
4855 {
4856 relocation = htab->sgotplt_jump_table_size + offplt;
4857 unresolved_reloc = FALSE;
4858 }
4859 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4860 {
6de2ae4a
L		 4861 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4862 + htab->elf.sgotplt->output_offset;
4863 relocation = htab->elf.sgot->output_section->vma
4864 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4865 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4866 && tls_type == GOT_TLS_IE_BOTH)
4867 relocation += 4;
4868 if (r_type == R_386_TLS_IE)
8c37241b 4869 relocation += g_o_t;
b34976b6 4870 unresolved_reloc = FALSE;
13ae64f3 4871 }
67a4f2b7 4872 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4873 {
4874 unsigned int val, type;
4875 bfd_vma roff;
4876
4877 /* GD->IE transition. */
6eaa7fb5
L		 4878 type = *(contents + rel->r_offset - 2);
4879 val = *(contents + rel->r_offset - 1);
13ae64f3
JJ		 4880 if (type == 0x04)
4881 {
6eaa7fb5
L		 4882 /* Change
4883 leal foo@tlsgd(,%ebx,1), %eax
4884 call ___tls_get_addr@PLT
4885 into:
4886 movl %gs:0, %eax
4887 subl $foo@gottpoff(%ebx), %eax. */
13ae64f3 4888 val >>= 3;
142411ca 4889 roff = rel->r_offset - 3;
13ae64f3
JJ		 4890 }
4891 else
4892 {
6eaa7fb5
L		 4893 /* Change
4894 leal foo@tlsgd(%ebx), %eax
4895 call ___tls_get_addr@PLT
4896 nop
4897 or
4898 leal foo@tlsgd(%reg), %eax
4899 call *___tls_get_addr@GOT(%reg)
4900 which may be converted to
4901 addr32 call ___tls_get_addr
4902 into:
4903 movl %gs:0, %eax;
4904 subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4905 roff = rel->r_offset - 2;
4906 }
4907 memcpy (contents + roff,
4908 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4909 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4910 /* If foo is used only with foo@gotntpoff(%reg) and
4911 foo@indntpoff, but not with foo@gottpoff(%reg), change
4912 subl $foo@gottpoff(%reg), %eax
4913 into:
4914 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4915 if (tls_type == GOT_TLS_IE_POS)
4916 contents[roff + 6] = 0x03;
8c37241b 4917 bfd_put_32 (output_bfd,
6de2ae4a
L		 4918 htab->elf.sgot->output_section->vma
4919 + htab->elf.sgot->output_offset + off
4920 - htab->elf.sgotplt->output_section->vma
4921 - htab->elf.sgotplt->output_offset,
13ae64f3 4922 contents + roff + 8);
6eaa7fb5 4923 /* Skip R_386_PLT32 and R_386_GOT32X. */
13ae64f3 4924 rel++;
60f2e42e 4925 wrel++;
13ae64f3
JJ		 4926 continue;
4927 }
67a4f2b7
AO		 4928 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4929 {
4930 /* GDesc -> IE transition.
4931 It's originally something like:
4932 leal x@tlsdesc(%ebx), %eax
4933
4934 Change it to:
142411ca 4935 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4936 or:
4937 movl x@gottpoff(%ebx), %eax # before negl %eax
4938
4939 Registers other than %eax may be set up here. */
4940
67a4f2b7
AO		 4941 bfd_vma roff;
4942
4943 /* First, make sure it's a leal adding ebx to a 32-bit
4944 offset into any register, although it's probably
4945 almost always going to be eax. */
4946 roff = rel->r_offset;
67a4f2b7
AO		 4947
4948 /* Now modify the instruction as appropriate. */
4949 /* To turn a leal into a movl in the form we use it, it
4950 suffices to change the first byte from 0x8d to 0x8b.
4951 aoliva FIXME: should we decide to keep the leal, all
4952 we have to do is remove the statement below, and
4953 adjust the relaxation of R_386_TLS_DESC_CALL. */
4954 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4955
4956 if (tls_type == GOT_TLS_IE_BOTH)
4957 off += 4;
4958
4959 bfd_put_32 (output_bfd,
6de2ae4a
L		 4960 htab->elf.sgot->output_section->vma
4961 + htab->elf.sgot->output_offset + off
4962 - htab->elf.sgotplt->output_section->vma
4963 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4964 contents + roff);
4965 continue;
4966 }
4967 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4968 {
4969 /* GDesc -> IE transition.
4970 It's originally:
4971 call *(%eax)
4972
4973 Change it to:
142411ca 4974 xchg %ax,%ax
67a4f2b7
AO		 4975 or
4976 negl %eax
4977 depending on how we transformed the TLS_GOTDESC above.
4978 */
4979
67a4f2b7
AO		 4980 bfd_vma roff;
4981
67a4f2b7 4982 roff = rel->r_offset;
67a4f2b7
AO		 4983
4984 /* Now modify the instruction as appropriate. */
4985 if (tls_type != GOT_TLS_IE_NEG)
4986 {
10efb593
L		 4987 /* xchg %ax,%ax */
4988 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4989 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4990 }
4991 else
4992 {
4993 /* negl %eax */
4994 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4995 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4996 }
4997
4998 continue;
4999 }
5000 else
5001 BFD_ASSERT (FALSE);
13ae64f3
JJ		 5002 break;
5003
5004 case R_386_TLS_LDM:
142411ca
L		 5005 if (! elf_i386_tls_transition (info, input_bfd,
5006 input_section, contents,
5007 symtab_hdr, sym_hashes,
5008 &r_type, GOT_UNKNOWN, rel,
bedfd056 5009 relend, h, r_symndx, TRUE))
142411ca 5010 return FALSE;
13ae64f3 5011
142411ca
L		 5012 if (r_type != R_386_TLS_LDM)
5013 {
6eaa7fb5
L		 5014 /* LD->LE transition. Change
5015 leal foo@tlsldm(%ebx) %eax
5016 call ___tls_get_addr@PLT
5017 into:
5018 movl %gs:0, %eax
5019 nop
5020 leal 0(%esi,1), %esi
5021 or change
5022 leal foo@tlsldm(%reg) %eax
5023 call *___tls_get_addr@GOT(%reg)
5024 which may be converted to
5025 addr32 call ___tls_get_addr
5026 into:
5027 movl %gs:0, %eax
5028 leal 0(%esi), %esi */
142411ca 5029 BFD_ASSERT (r_type == R_386_TLS_LE_32);
6eaa7fb5
L		 5030 if (*(contents + rel->r_offset + 4) == 0xff
5031 || *(contents + rel->r_offset + 4) == 0x67)
5032 memcpy (contents + rel->r_offset - 2,
5033 "\x65\xa1\0\0\0\0\x8d\xb6\0\0\0", 12);
5034 else
5035 memcpy (contents + rel->r_offset - 2,
5036 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 5037 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3 5038 rel++;
60f2e42e 5039 wrel++;
13ae64f3
JJ		 5040 continue;
5041 }
5042
6de2ae4a 5043 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 5044 abort ();
5045
5046 off = htab->tls_ldm_got.offset;
5047 if (off & 1)
5048 off &= ~1;
5049 else
5050 {
947216bf 5051 Elf_Internal_Rela outrel;
13ae64f3 5052
6de2ae4a 5053 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 5054 abort ();
5055
6de2ae4a
L		 5056 outrel.r_offset = (htab->elf.sgot->output_section->vma
5057 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 5058
5059 bfd_put_32 (output_bfd, 0,
6de2ae4a 5060 htab->elf.sgot->contents + off);
13ae64f3 5061 bfd_put_32 (output_bfd, 0,
6de2ae4a 5062 htab->elf.sgot->contents + off + 4);
13ae64f3 5063 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 5064 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 5065 htab->tls_ldm_got.offset |= 1;
5066 }
6de2ae4a
L		 5067 relocation = htab->elf.sgot->output_section->vma
5068 + htab->elf.sgot->output_offset + off
5069 - htab->elf.sgotplt->output_section->vma
5070 - htab->elf.sgotplt->output_offset;
b34976b6 5071 unresolved_reloc = FALSE;
13ae64f3
JJ		 5072 break;
5073
5074 case R_386_TLS_LDO_32:
0e1862bb
L		 5075 if (!bfd_link_executable (info)
5076 || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 5077 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 5078 else
5079 /* When converting LDO to LE, we must negate. */
eb4ff4d6 5080 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 5081 break;
5082
5083 case R_386_TLS_LE_32:
13ae64f3 5084 case R_386_TLS_LE:
0e1862bb 5085 if (!bfd_link_executable (info))
37e55690 5086 {
947216bf 5087 Elf_Internal_Rela outrel;
37e55690 5088 asection *sreloc;
37e55690
JJ		 5089
5090 outrel.r_offset = rel->r_offset
5091 + input_section->output_section->vma
5092 + input_section->output_offset;
5093 if (h != NULL && h->dynindx != -1)
5094 indx = h->dynindx;
5095 else
5096 indx = 0;
5097 if (r_type == R_386_TLS_LE_32)
5098 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
5099 else
5100 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
5101 sreloc = elf_section_data (input_section)->sreloc;
5102 if (sreloc == NULL)
5103 abort ();
59d6ffb2 5104 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 5105 if (indx)
5106 continue;
5107 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 5108 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 5109 else
eb4ff4d6 5110 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 5111 }
5112 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 5113 relocation = elf_i386_tpoff (info, relocation);
37e55690 5114 else
eb4ff4d6 5115 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 5116 break;
5117
252b5132
RH		 5118 default:
5119 break;
5120 }
5121
239e1f3a
AM		 5122 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5123 because such sections are not SEC_ALLOC and thus ld.so will
5124 not process them. */
8c694914 5125 if (unresolved_reloc
239e1f3a 5126 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 5127 && h->def_dynamic)
5128 && _bfd_elf_section_offset (output_bfd, info, input_section,
5129 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 5130 {
5131 (*_bfd_error_handler)
843fe662 5132 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 5133 input_bfd,
5134 input_section,
6a30718d 5135 (long) rel->r_offset,
843fe662 5136 howto->name,
6a30718d 5137 h->root.root.string);
b34976b6 5138 return FALSE;
6a30718d 5139 }
83be169b 5140
cbe950e9 5141do_relocation:
252b5132
RH		 5142 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5143 contents, rel->r_offset,
55fd94b0 5144 relocation, 0);
252b5132 5145
62d78908 5146check_relocation_error:
cf5c0c5b 5147 if (r != bfd_reloc_ok)
252b5132 5148 {
cf5c0c5b 5149 const char *name;
ffb2e45b 5150
cf5c0c5b
AM		 5151 if (h != NULL)
5152 name = h->root.root.string;
5153 else
5154 {
5155 name = bfd_elf_string_from_elf_section (input_bfd,
5156 symtab_hdr->sh_link,
5157 sym->st_name);
5158 if (name == NULL)
b34976b6 5159 return FALSE;
cf5c0c5b
AM		 5160 if (*name == '\0')
5161 name = bfd_section_name (input_bfd, sec);
5162 }
ffb2e45b 5163
cf5c0c5b 5164 if (r == bfd_reloc_overflow)
1a72702b
AM		 5165 (*info->callbacks->reloc_overflow)
5166 (info, (h ? &h->root : NULL), name, howto->name,
5167 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
cf5c0c5b
AM		 5168 else
5169 {
5170 (*_bfd_error_handler)
d003868e
AM		 5171 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
5172 input_bfd, input_section,
cf5c0c5b 5173 (long) rel->r_offset, name, (int) r);
b34976b6 5174 return FALSE;
cf5c0c5b 5175 }
252b5132 5176 }
60f2e42e
L		 5177
5178 if (wrel != rel)
5179 *wrel = *rel;
5180 }
5181
5182 if (wrel != rel)
5183 {
5184 Elf_Internal_Shdr *rel_hdr;
5185 size_t deleted = rel - wrel;
5186
5187 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
5188 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5189 if (rel_hdr->sh_size == 0)
5190 {
5191 /* It is too late to remove an empty reloc section. Leave
5192 one NONE reloc.
5193 ??? What is wrong with an empty section??? */
5194 rel_hdr->sh_size = rel_hdr->sh_entsize;
5195 deleted -= 1;
5196 }
5197 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
5198 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5199 input_section->reloc_count -= deleted;
252b5132
RH		 5200 }
5201
b34976b6 5202 return TRUE;
252b5132
RH		 5203}
5204
5205/* Finish up dynamic symbol handling. We set the contents of various
5206 dynamic sections here. */
5207
b34976b6 5208static bfd_boolean
55fd94b0
AM		 5209elf_i386_finish_dynamic_symbol (bfd *output_bfd,
5210 struct bfd_link_info *info,
5211 struct elf_link_hash_entry *h,
5212 Elf_Internal_Sym *sym)
252b5132 5213{
6725bdbf 5214 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 5215 unsigned plt_entry_size;
5216 const struct elf_i386_backend_data *abed;
dd7e64d4 5217 struct elf_i386_link_hash_entry *eh;
aec6b87e 5218 bfd_boolean local_undefweak;
252b5132 5219
6725bdbf 5220 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5221 if (htab == NULL)
5222 return FALSE;
252b5132 5223
25e762b9
RM		 5224 abed = get_elf_i386_backend_data (output_bfd);
5225 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
5226
dd7e64d4
L		 5227 eh = (struct elf_i386_link_hash_entry *) h;
5228
aec6b87e
L		 5229 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
5230 resolved undefined weak symbols in executable so that their
5231 references have value 0 at run-time. */
e62b9723
L		 5232 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
5233 eh->has_got_reloc,
5234 eh);
aec6b87e 5235
252b5132
RH		 5236 if (h->plt.offset != (bfd_vma) -1)
5237 {
252b5132
RH		 5238 bfd_vma plt_index;
5239 bfd_vma got_offset;
947216bf
AM		 5240 Elf_Internal_Rela rel;
5241 bfd_byte *loc;
cbe950e9
L		 5242 asection *plt, *gotplt, *relplt;
5243
5244 /* When building a static executable, use .iplt, .igot.plt and
5245 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 5246 if (htab->elf.splt != NULL)
cbe950e9 5247 {
6de2ae4a
L		 5248 plt = htab->elf.splt;
5249 gotplt = htab->elf.sgotplt;
5250 relplt = htab->elf.srelplt;
cbe950e9
L		 5251 }
5252 else
5253 {
6de2ae4a
L		 5254 plt = htab->elf.iplt;
5255 gotplt = htab->elf.igotplt;
5256 relplt = htab->elf.irelplt;
cbe950e9 5257 }
252b5132
RH		 5258
5259 /* This symbol has an entry in the procedure linkage table. Set
5260 it up. */
5261
cbe950e9 5262 if ((h->dynindx == -1
aec6b87e 5263 && !local_undefweak
0e1862bb 5264 && !((h->forced_local || bfd_link_executable (info))
cbe950e9
L		 5265 && h->def_regular
5266 && h->type == STT_GNU_IFUNC))
5267 || plt == NULL
5268 || gotplt == NULL
5269 || relplt == NULL)
cec7f46a 5270 abort ();
252b5132
RH		 5271
5272 /* Get the index in the procedure linkage table which
5273 corresponds to this symbol. This is the index of this symbol
5274 in all the symbols for which we are making plt entries. The
cbe950e9 5275 first entry in the procedure linkage table is reserved.
252b5132 5276
cbe950e9 5277 Get the offset into the .got table of the entry that
252b5132 5278 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 5279 The first three are reserved.
6bbec505 5280
cbe950e9
L		 5281 For static executables, we don't reserve anything. */
5282
6de2ae4a 5283 if (plt == htab->elf.splt)
cbe950e9 5284 {
e1f98742
L		 5285 got_offset = h->plt.offset / plt_entry_size - 1;
5286 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 5287 }
5288 else
5289 {
e1f98742
L		 5290 got_offset = h->plt.offset / plt_entry_size;
5291 got_offset = got_offset * 4;
cbe950e9 5292 }
252b5132
RH		 5293
5294 /* Fill in the entry in the procedure linkage table. */
0e1862bb 5295 if (! bfd_link_pic (info))
252b5132 5296 {
25e762b9
RM		 5297 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
5298 abed->plt->plt_entry_size);
252b5132 5299 bfd_put_32 (output_bfd,
cbe950e9
L		 5300 (gotplt->output_section->vma
5301 + gotplt->output_offset
252b5132 5302 + got_offset),
25e762b9
RM		 5303 plt->contents + h->plt.offset
5304 + abed->plt->plt_got_offset);
eac338cf 5305
25e762b9 5306 if (abed->is_vxworks)
eac338cf
PB		 5307 {
5308 int s, k, reloc_index;
5309
5310 /* Create the R_386_32 relocation referencing the GOT
5311 for this PLT entry. */
5312
5313 /* S: Current slot number (zero-based). */
25e762b9
RM		 5314 s = ((h->plt.offset - abed->plt->plt_entry_size)
5315 / abed->plt->plt_entry_size);
eac338cf 5316 /* K: Number of relocations for PLTResolve. */
0e1862bb 5317 if (bfd_link_pic (info))
eac338cf
PB		 5318 k = PLTRESOLVE_RELOCS_SHLIB;
5319 else
5320 k = PLTRESOLVE_RELOCS;
5321 /* Skip the PLTresolve relocations, and the relocations for
5322 the other PLT slots. */
5323 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
5324 loc = (htab->srelplt2->contents + reloc_index
5325 * sizeof (Elf32_External_Rel));
5326
6de2ae4a
L		 5327 rel.r_offset = (htab->elf.splt->output_section->vma
5328 + htab->elf.splt->output_offset
eac338cf 5329 + h->plt.offset + 2),
7325306f 5330 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5331 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5332
5333 /* Create the R_386_32 relocation referencing the beginning of
5334 the PLT for this GOT entry. */
6de2ae4a
L		 5335 rel.r_offset = (htab->elf.sgotplt->output_section->vma
5336 + htab->elf.sgotplt->output_offset
eac338cf 5337 + got_offset);
7325306f 5338 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 5339 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 5340 loc + sizeof (Elf32_External_Rel));
eac338cf 5341 }
252b5132
RH		 5342 }
5343 else
5344 {
25e762b9
RM		 5345 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
5346 abed->plt->plt_entry_size);
252b5132 5347 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 5348 plt->contents + h->plt.offset
5349 + abed->plt->plt_got_offset);
252b5132
RH		 5350 }
5351
aec6b87e
L		 5352 /* Fill in the entry in the global offset table. Leave the entry
5353 as zero for undefined weak symbol in PIE. No PLT relocation
5354 against undefined weak symbol in PIE. */
5355 if (!local_undefweak)
cbe950e9 5356 {
cbe950e9 5357 bfd_put_32 (output_bfd,
aec6b87e
L		 5358 (plt->output_section->vma
5359 + plt->output_offset
5360 + h->plt.offset
5361 + abed->plt->plt_lazy_offset),
cbe950e9 5362 gotplt->contents + got_offset);
252b5132 5363
aec6b87e
L		 5364 /* Fill in the entry in the .rel.plt section. */
5365 rel.r_offset = (gotplt->output_section->vma
5366 + gotplt->output_offset
5367 + got_offset);
5368 if (h->dynindx == -1
5369 || ((bfd_link_executable (info)
5370 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5371 && h->def_regular
5372 && h->type == STT_GNU_IFUNC))
5373 {
5374 /* If an STT_GNU_IFUNC symbol is locally defined, generate
5375 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
5376 in the .got.plt section. */
5377 bfd_put_32 (output_bfd,
5378 (h->root.u.def.value
5379 + h->root.u.def.section->output_section->vma
5380 + h->root.u.def.section->output_offset),
5381 gotplt->contents + got_offset);
5382 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
5383 /* R_386_IRELATIVE comes last. */
5384 plt_index = htab->next_irelative_index--;
5385 }
5386 else
5387 {
5388 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
5389 plt_index = htab->next_jump_slot_index++;
5390 }
5391
5392 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
5393 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5394
5395 /* Don't fill PLT entry for static executables. */
5396 if (plt == htab->elf.splt)
5397 {
5398 bfd_put_32 (output_bfd,
5399 plt_index * sizeof (Elf32_External_Rel),
5400 plt->contents + h->plt.offset
5401 + abed->plt->plt_reloc_offset);
5402 bfd_put_32 (output_bfd, - (h->plt.offset
5403 + abed->plt->plt_plt_offset + 4),
5404 plt->contents + h->plt.offset
5405 + abed->plt->plt_plt_offset);
5406 }
e1f98742 5407 }
dd7e64d4
L		 5408 }
5409 else if (eh->plt_got.offset != (bfd_vma) -1)
5410 {
5411 bfd_vma got_offset, plt_offset;
5412 asection *plt, *got, *gotplt;
5413 const bfd_byte *got_plt_entry;
5414
5415 /* Offset of displacement of the indirect jump. */
5416 bfd_vma plt_got_offset = 2;
e1f98742 5417
dd7e64d4
L		 5418 /* Set the entry in the GOT procedure linkage table. */
5419 plt = htab->plt_got;
5420 got = htab->elf.sgot;
5421 gotplt = htab->elf.sgotplt;
5422 got_offset = h->got.offset;
5423
5424 if (got_offset == (bfd_vma) -1
5425 || plt == NULL
5426 || got == NULL
5427 || gotplt == NULL)
5428 abort ();
5429
5430 /* Fill in the entry in the GOT procedure linkage table. */
0e1862bb 5431 if (! bfd_link_pic (info))
252b5132 5432 {
dd7e64d4
L		 5433 got_plt_entry = elf_i386_got_plt_entry;
5434 got_offset += got->output_section->vma + got->output_offset;
252b5132 5435 }
dd7e64d4
L		 5436 else
5437 {
5438 got_plt_entry = elf_i386_pic_got_plt_entry;
5439 got_offset += (got->output_section->vma
5440 + got->output_offset
5441 - gotplt->output_section->vma
5442 - gotplt->output_offset);
5443 }
5444
5445 plt_offset = eh->plt_got.offset;
5446 memcpy (plt->contents + plt_offset, got_plt_entry,
5447 sizeof (elf_i386_got_plt_entry));
5448 bfd_put_32 (output_bfd, got_offset,
5449 plt->contents + plt_offset + plt_got_offset);
5450 }
5451
aec6b87e
L		 5452 if (!local_undefweak
5453 && !h->def_regular
dd7e64d4
L		 5454 && (h->plt.offset != (bfd_vma) -1
5455 || eh->plt_got.offset != (bfd_vma) -1))
5456 {
5457 /* Mark the symbol as undefined, rather than as defined in
5458 the .plt section. Leave the value if there were any
5459 relocations where pointer equality matters (this is a clue
5460 for the dynamic linker, to make function pointer
5461 comparisons work between an application and shared
5462 library), otherwise set it to zero. If a function is only
5463 called from a binary, there is no need to slow down
5464 shared libraries because of that. */
5465 sym->st_shndx = SHN_UNDEF;
5466 if (!h->pointer_equality_needed)
5467 sym->st_value = 0;
252b5132
RH		 5468 }
5469
aec6b87e
L		 5470 /* Don't generate dynamic GOT relocation against undefined weak
5471 symbol in executable. */
13ae64f3 5472 if (h->got.offset != (bfd_vma) -1
67a4f2b7 5473 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
aec6b87e
L		 5474 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0
5475 && !local_undefweak)
252b5132 5476 {
947216bf 5477 Elf_Internal_Rela rel;
233cc9c1 5478 asection *relgot = htab->elf.srelgot;
252b5132
RH		 5479
5480 /* This symbol has an entry in the global offset table. Set it
5481 up. */
5482
6de2ae4a 5483 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 5484 abort ();
252b5132 5485
6de2ae4a
L		 5486 rel.r_offset = (htab->elf.sgot->output_section->vma
5487 + htab->elf.sgot->output_offset
dc810e39 5488 + (h->got.offset & ~(bfd_vma) 1));
252b5132 5489
dd5724d5
AM		 5490 /* If this is a static link, or it is a -Bsymbolic link and the
5491 symbol is defined locally or was forced to be local because
5492 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 5493 The entry in the global offset table will already have been
5494 initialized in the relocate_section function. */
710ab287 5495 if (h->def_regular
0018b0a3
L		 5496 && h->type == STT_GNU_IFUNC)
5497 {
233cc9c1
L		 5498 if (h->plt.offset == (bfd_vma) -1)
5499 {
5500 /* STT_GNU_IFUNC is referenced without PLT. */
5501 if (htab->elf.splt == NULL)
5502 {
5503 /* use .rel[a].iplt section to store .got relocations
5504 in static executable. */
5505 relgot = htab->elf.irelplt;
5506 }
5507 if (SYMBOL_REFERENCES_LOCAL (info, h))
5508 {
5509 bfd_put_32 (output_bfd,
5510 (h->root.u.def.value
5511 + h->root.u.def.section->output_section->vma
5512 + h->root.u.def.section->output_offset),
5513 htab->elf.sgot->contents + h->got.offset);
5514 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
5515 }
5516 else
5517 goto do_glob_dat;
5518 }
5519 else if (bfd_link_pic (info))
710ab287
L		 5520 {
5521 /* Generate R_386_GLOB_DAT. */
5522 goto do_glob_dat;
5523 }
5524 else
5525 {
cd2b2c10
L		 5526 asection *plt;
5527
710ab287
L		 5528 if (!h->pointer_equality_needed)
5529 abort ();
5530
5531 /* For non-shared object, we can't use .got.plt, which
5532 contains the real function addres if we need pointer
5533 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 5534 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 5535 bfd_put_32 (output_bfd,
5536 (plt->output_section->vma
5537 + plt->output_offset + h->plt.offset),
6de2ae4a 5538 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 5539 return TRUE;
5540 }
0018b0a3 5541 }
0e1862bb 5542 else if (bfd_link_pic (info)
0018b0a3 5543 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 5544 {
6725bdbf 5545 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 5546 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
5547 }
252b5132
RH		 5548 else
5549 {
dd5724d5 5550 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 5551do_glob_dat:
6725bdbf 5552 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 5553 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 5554 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
5555 }
5556
233cc9c1 5557 elf_append_rel (output_bfd, relgot, &rel);
252b5132
RH		 5558 }
5559
f5385ebf 5560 if (h->needs_copy)
252b5132 5561 {
947216bf 5562 Elf_Internal_Rela rel;
252b5132
RH		 5563
5564 /* This symbol needs a copy reloc. Set it up. */
5565
ffb2e45b
AM		 5566 if (h->dynindx == -1
5567 || (h->root.type != bfd_link_hash_defined
5568 && h->root.type != bfd_link_hash_defweak)
5569 || htab->srelbss == NULL)
5570 abort ();
252b5132
RH		 5571
5572 rel.r_offset = (h->root.u.def.value
5573 + h->root.u.def.section->output_section->vma
5574 + h->root.u.def.section->output_offset);
5575 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 5576 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 5577 }
5578
b34976b6 5579 return TRUE;
252b5132
RH		 5580}
5581
c25bc9fc
L		 5582/* Finish up local dynamic symbol handling. We set the contents of
5583 various dynamic sections here. */
5584
5585static bfd_boolean
5586elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
5587{
5588 struct elf_link_hash_entry *h
5589 = (struct elf_link_hash_entry *) *slot;
5590 struct bfd_link_info *info
23209a78 5591 = (struct bfd_link_info *) inf;
c25bc9fc
L		 5592
5593 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
5594 h, NULL);
5595}
5596
aec6b87e
L		 5597/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
5598 here since undefined weak symbol may not be dynamic and may not be
5599 called for elf_i386_finish_dynamic_symbol. */
5600
5601static bfd_boolean
5602elf_i386_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
5603 void *inf)
5604{
5605 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
5606 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5607
5608 if (h->root.type != bfd_link_hash_undefweak
5609 || h->dynindx != -1)
5610 return TRUE;
5611
5612 return elf_i386_finish_dynamic_symbol (info->output_bfd,
5613 info, h, NULL);
5614}
5615
38701953
AM		 5616/* Used to decide how to sort relocs in an optimal manner for the
5617 dynamic linker, before writing them out. */
5618
5619static enum elf_reloc_type_class
cae1fbbb 5620elf_i386_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 5621 const asection *rel_sec ATTRIBUTE_UNUSED,
5622 const Elf_Internal_Rela *rela)
38701953 5623{
cae1fbbb
L		 5624 bfd *abfd = info->output_bfd;
5625 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
5626 struct elf_link_hash_table *htab = elf_hash_table (info);
cae1fbbb 5627
d9e3b590
L		 5628 if (htab->dynsym != NULL
5629 && htab->dynsym->contents != NULL)
5630 {
5631 /* Check relocation against STT_GNU_IFUNC symbol if there are
5632 dynamic symbols. */
5633 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
c428ce9d
L		 5634 if (r_symndx != STN_UNDEF)
5635 {
5636 Elf_Internal_Sym sym;
5637 if (!bed->s->swap_symbol_in (abfd,
5638 (htab->dynsym->contents
5639 + r_symndx * sizeof (Elf32_External_Sym)),
5640 0, &sym))
5641 abort ();
d9e3b590 5642
c428ce9d
L		 5643 if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
5644 return reloc_class_ifunc;
5645 }
d9e3b590 5646 }
cae1fbbb 5647
55fd94b0 5648 switch (ELF32_R_TYPE (rela->r_info))
38701953 5649 {
c428ce9d
L		 5650 case R_386_IRELATIVE:
5651 return reloc_class_ifunc;
38701953
AM		 5652 case R_386_RELATIVE:
5653 return reloc_class_relative;
5654 case R_386_JUMP_SLOT:
5655 return reloc_class_plt;
5656 case R_386_COPY:
5657 return reloc_class_copy;
5658 default:
5659 return reloc_class_normal;
5660 }
5661}
5662
252b5132
RH		 5663/* Finish up the dynamic sections. */
5664
b34976b6 5665static bfd_boolean
55fd94b0
AM		 5666elf_i386_finish_dynamic_sections (bfd *output_bfd,
5667 struct bfd_link_info *info)
252b5132 5668{
6725bdbf 5669 struct elf_i386_link_hash_table *htab;
252b5132 5670 bfd *dynobj;
252b5132 5671 asection *sdyn;
25e762b9 5672 const struct elf_i386_backend_data *abed;
252b5132 5673
6725bdbf 5674 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5675 if (htab == NULL)
5676 return FALSE;
5677
ebe50bae 5678 dynobj = htab->elf.dynobj;
3d4d4302 5679 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 5680 abed = get_elf_i386_backend_data (output_bfd);
252b5132 5681
ebe50bae 5682 if (htab->elf.dynamic_sections_created)
252b5132 5683 {
252b5132
RH		 5684 Elf32_External_Dyn *dyncon, *dynconend;
5685
6de2ae4a 5686 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 5687 abort ();
252b5132
RH		 5688
5689 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 5690 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 5691 for (; dyncon < dynconend; dyncon++)
5692 {
5693 Elf_Internal_Dyn dyn;
51b64d56 5694 asection *s;
252b5132
RH		 5695
5696 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5697
5698 switch (dyn.d_tag)
5699 {
5700 default:
25e762b9
RM		 5701 if (abed->is_vxworks
5702 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 5703 break;
0ac8d2ca 5704 continue;
252b5132
RH		 5705
5706 case DT_PLTGOT:
6de2ae4a 5707 s = htab->elf.sgotplt;
8c37241b 5708 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 5709 break;
5710
252b5132 5711 case DT_JMPREL:
6de2ae4a 5712 s = htab->elf.srelplt;
6348e046 5713 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 5714 break;
5715
5716 case DT_PLTRELSZ:
6de2ae4a 5717 s = htab->elf.srelplt;
eea6121a 5718 dyn.d_un.d_val = s->size;
252b5132
RH		 5719 break;
5720
5721 case DT_RELSZ:
5722 /* My reading of the SVR4 ABI indicates that the
5723 procedure linkage table relocs (DT_JMPREL) should be
5724 included in the overall relocs (DT_REL). This is
5725 what Solaris does. However, UnixWare can not handle
5726 that case. Therefore, we override the DT_RELSZ entry
6348e046 5727 here to make it not include the JMPREL relocs. */
6de2ae4a 5728 s = htab->elf.srelplt;
6348e046
AM		 5729 if (s == NULL)
5730 continue;
eea6121a 5731 dyn.d_un.d_val -= s->size;
6348e046
AM		 5732 break;
5733
5734 case DT_REL:
5735 /* We may not be using the standard ELF linker script.
5736 If .rel.plt is the first .rel section, we adjust
5737 DT_REL to not include it. */
6de2ae4a 5738 s = htab->elf.srelplt;
6348e046
AM		 5739 if (s == NULL)
5740 continue;
5741 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
5742 continue;
eea6121a 5743 dyn.d_un.d_ptr += s->size;
252b5132
RH		 5744 break;
5745 }
0ac8d2ca
AM		 5746
5747 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 5748 }
5749
5750 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 5751 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132 5752 {
0e1862bb 5753 if (bfd_link_pic (info))
eac338cf 5754 {
25e762b9
RM		 5755 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
5756 abed->plt->plt0_entry_size);
5757 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5758 abed->plt0_pad_byte,
5759 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 5760 }
252b5132
RH		 5761 else
5762 {
25e762b9
RM		 5763 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
5764 abed->plt->plt0_entry_size);
5765 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5766 abed->plt0_pad_byte,
5767 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 5768 bfd_put_32 (output_bfd,
6de2ae4a
L		 5769 (htab->elf.sgotplt->output_section->vma
5770 + htab->elf.sgotplt->output_offset
6725bdbf 5771 + 4),
25e762b9
RM		 5772 htab->elf.splt->contents
5773 + abed->plt->plt0_got1_offset);
252b5132 5774 bfd_put_32 (output_bfd,
6de2ae4a
L		 5775 (htab->elf.sgotplt->output_section->vma
5776 + htab->elf.sgotplt->output_offset
6725bdbf 5777 + 8),
25e762b9
RM		 5778 htab->elf.splt->contents
5779 + abed->plt->plt0_got2_offset);
eac338cf 5780
25e762b9 5781 if (abed->is_vxworks)
eac338cf
PB		 5782 {
5783 Elf_Internal_Rela rel;
7325306f 5784
eac338cf
PB		 5785 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
5786 On IA32 we use REL relocations so the addend goes in
5787 the PLT directly. */
6de2ae4a
L		 5788 rel.r_offset = (htab->elf.splt->output_section->vma
5789 + htab->elf.splt->output_offset
25e762b9 5790 + abed->plt->plt0_got1_offset);
7325306f 5791 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5792 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5793 htab->srelplt2->contents);
5794 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 5795 rel.r_offset = (htab->elf.splt->output_section->vma
5796 + htab->elf.splt->output_offset
25e762b9 5797 + abed->plt->plt0_got2_offset);
7325306f 5798 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5799 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5800 htab->srelplt2->contents +
5801 sizeof (Elf32_External_Rel));
5802 }
252b5132
RH		 5803 }
5804
5805 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5806 really seem like the right value. */
6de2ae4a 5807 elf_section_data (htab->elf.splt->output_section)
6725bdbf 5808 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 5809
5810 /* Correct the .rel.plt.unloaded relocations. */
0e1862bb 5811 if (abed->is_vxworks && !bfd_link_pic (info))
eac338cf 5812 {
25e762b9
RM		 5813 int num_plts = (htab->elf.splt->size
5814 / abed->plt->plt_entry_size) - 1;
4c9b0de6 5815 unsigned char *p;
eac338cf
PB		 5816
5817 p = htab->srelplt2->contents;
0e1862bb 5818 if (bfd_link_pic (info))
eac338cf
PB		 5819 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5820 else
5821 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5822
5823 for (; num_plts; num_plts--)
5824 {
5825 Elf_Internal_Rela rel;
5826 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5827 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5828 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5829 p += sizeof (Elf32_External_Rel);
5830
5831 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5832 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 5833 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5834 p += sizeof (Elf32_External_Rel);
5835 }
5836 }
252b5132
RH		 5837 }
5838 }
5839
6de2ae4a 5840 if (htab->elf.sgotplt)
252b5132 5841 {
56d4289c
L		 5842 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5843 {
5844 (*_bfd_error_handler)
5845 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5846 return FALSE;
5847 }
5848
12d0ee4a 5849 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5850 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 5851 {
5852 bfd_put_32 (output_bfd,
55fd94b0 5853 (sdyn == NULL ? 0
12d0ee4a 5854 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 5855 htab->elf.sgotplt->contents);
5856 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5857 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 5858 }
252b5132 5859
6de2ae4a 5860 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5861 }
8c37241b 5862
e41b3a13 5863 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5864 if (htab->plt_eh_frame != NULL
5865 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5866 {
5867 if (htab->elf.splt != NULL
5868 && htab->elf.splt->size != 0
5869 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5870 && htab->elf.splt->output_section != NULL
5871 && htab->plt_eh_frame->output_section != NULL)
5872 {
5873 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5874 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5875 + htab->plt_eh_frame->output_offset
5876 + PLT_FDE_START_OFFSET;
5877 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5878 htab->plt_eh_frame->contents
5879 + PLT_FDE_START_OFFSET);
5880 }
5881 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5882 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5883 {
5884 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5885 htab->plt_eh_frame,
5886 htab->plt_eh_frame->contents))
5887 return FALSE;
5888 }
5889 }
5890
6de2ae4a
L		 5891 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5892 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5893
aec6b87e
L		 5894 /* Fill PLT entries for undefined weak symbols in PIE. */
5895 if (bfd_link_pie (info))
5896 bfd_hash_traverse (&info->hash->table,
5897 elf_i386_pie_finish_undefweak_symbol,
5898 info);
5899
b34976b6 5900 return TRUE;
252b5132
RH		 5901}
5902
233cc9c1
L		 5903/* Fill PLT/GOT entries and allocate dynamic relocations for local
5904 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
5905 It has to be done before elf_link_sort_relocs is called so that
5906 dynamic relocations are properly sorted. */
5907
5908static bfd_boolean
5909elf_i386_output_arch_local_syms
5910 (bfd *output_bfd ATTRIBUTE_UNUSED,
5911 struct bfd_link_info *info,
5912 void *flaginfo ATTRIBUTE_UNUSED,
5913 int (*func) (void *, const char *,
5914 Elf_Internal_Sym *,
5915 asection *,
5916 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
5917{
5918 struct elf_i386_link_hash_table *htab = elf_i386_hash_table (info);
5919 if (htab == NULL)
5920 return FALSE;
5921
5922 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5923 htab_traverse (htab->loc_hash_table,
5924 elf_i386_finish_local_dynamic_symbol,
5925 info);
5926
5927 return TRUE;
5928}
5929
3972882e 5930/* Return an array of PLT entry symbol values. */
4c45e5c9 5931
3972882e
L		 5932static bfd_vma *
5933elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5934 asection *relplt)
4c45e5c9 5935{
3972882e
L		 5936 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5937 arelent *p;
5938 long count, i;
5939 bfd_vma *plt_sym_val;
144bed8d 5940 bfd_vma plt_offset;
3972882e
L		 5941 bfd_byte *plt_contents;
5942 const struct elf_i386_backend_data *bed
5943 = get_elf_i386_backend_data (abfd);
5944 Elf_Internal_Shdr *hdr;
5945
5946 /* Get the .plt section contents. */
5947 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5948 if (plt_contents == NULL)
5949 return NULL;
5950 if (!bfd_get_section_contents (abfd, (asection *) plt,
5951 plt_contents, 0, plt->size))
5952 {
5953bad_return:
5954 free (plt_contents);
5955 return NULL;
5956 }
144bed8d 5957
3972882e
L		 5958 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5959 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5960 goto bad_return;
144bed8d 5961
3972882e
L		 5962 hdr = &elf_section_data (relplt)->this_hdr;
5963 count = relplt->size / hdr->sh_entsize;
5964
5965 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5966 if (plt_sym_val == NULL)
5967 goto bad_return;
cca5b8b6 5968
35181b3e 5969 for (i = 0; i < count; i++)
3972882e 5970 plt_sym_val[i] = -1;
cca5b8b6 5971
3972882e
L		 5972 plt_offset = bed->plt->plt_entry_size;
5973 p = relplt->relocation;
5974 for (i = 0; i < count; i++, p++)
144bed8d 5975 {
3972882e
L		 5976 long reloc_index;
5977
6f25f223 5978 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
533d0af0 5979 if (p->howto == NULL)
6f25f223 5980 continue;
533d0af0
L		 5981
5982 if (p->howto->type != R_386_JUMP_SLOT
5983 && p->howto->type != R_386_IRELATIVE)
3972882e
L		 5984 continue;
5985
5986 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
5987 + bed->plt->plt_reloc_offset));
5988 reloc_index /= sizeof (Elf32_External_Rel);
ec1f73bb
AM		 5989 if (reloc_index < count)
5990 plt_sym_val[reloc_index] = plt->vma + plt_offset;
5991
144bed8d 5992 plt_offset += bed->plt->plt_entry_size;
fca6ae69
L		 5993
5994 /* PR binutils/18437: Skip extra relocations in the .rel.plt
5995 section. */
5996 if (plt_offset >= plt->size)
5997 break;
144bed8d
L		 5998 }
5999
3972882e
L		 6000 free (plt_contents);
6001
6002 return plt_sym_val;
6003}
6004
6005/* Similar to _bfd_elf_get_synthetic_symtab. */
6006
6007static long
6008elf_i386_get_synthetic_symtab (bfd *abfd,
6009 long symcount,
6010 asymbol **syms,
6011 long dynsymcount,
6012 asymbol **dynsyms,
6013 asymbol **ret)
6014{
6015 asection *plt = bfd_get_section_by_name (abfd, ".plt");
6016 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
6017 dynsymcount, dynsyms, ret,
6018 plt,
6019 elf_i386_get_plt_sym_val);
4c45e5c9
JJ		 6020}
6021
fdc90cb4
JJ		 6022/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6023
6024static bfd_boolean
6025elf_i386_hash_symbol (struct elf_link_hash_entry *h)
6026{
6027 if (h->plt.offset != (bfd_vma) -1
6028 && !h->def_regular
6029 && !h->pointer_equality_needed)
6030 return FALSE;
6031
6032 return _bfd_elf_hash_symbol (h);
6033}
4c45e5c9 6034
6d00b590 6035#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 6036#define TARGET_LITTLE_NAME "elf32-i386"
6037#define ELF_ARCH bfd_arch_i386
ae95ffa6 6038#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 6039#define ELF_MACHINE_CODE EM_386
6040#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 6041
6042#define elf_backend_can_gc_sections 1
51b64d56 6043#define elf_backend_can_refcount 1
252b5132
RH		 6044#define elf_backend_want_got_plt 1
6045#define elf_backend_plt_readonly 1
6046#define elf_backend_want_plt_sym 0
6047#define elf_backend_got_header_size 12
e41b3a13 6048#define elf_backend_plt_alignment 4
f7483970 6049#define elf_backend_extern_protected_data 1
bedfd056 6050#define elf_backend_caches_rawsize 1
252b5132 6051
8c29f035
AM		 6052/* Support RELA for objdump of prelink objects. */
6053#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 6054#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
6055
13ae64f3 6056#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 6057
dd5724d5
AM		 6058#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
6059#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
6060#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 6061#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 6062#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5
AM		 6063
6064#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 6065#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 6066#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 6067#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 6068#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 6069#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 6070#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
6071#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
233cc9c1 6072#define elf_backend_output_arch_local_syms elf_i386_output_arch_local_syms
dd5724d5 6073#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
c5fccbec
DJ		 6074#define elf_backend_grok_prstatus elf_i386_grok_prstatus
6075#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 6076#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 6077#define elf_backend_relocate_section elf_i386_relocate_section
6078#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 6079#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 6080#define elf_backend_omit_section_dynsym \
6081 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
fdc90cb4 6082#define elf_backend_hash_symbol elf_i386_hash_symbol
aec6b87e 6083#define elf_backend_fixup_symbol elf_i386_fixup_symbol
dd5724d5 6084
252b5132 6085#include "elf32-target.h"
2bc3c89a
AM		 6086
6087/* FreeBSD support. */
6088
6089#undef TARGET_LITTLE_SYM
6d00b590 6090#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 6091#undef TARGET_LITTLE_NAME
6092#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 6093#undef ELF_OSABI
6094#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 6095
6096/* The kernel recognizes executables as valid only if they carry a
6097 "FreeBSD" label in the ELF header. So we put this label on all
6098 executables and (for simplicity) also all other object files. */
6099
2bc3c89a 6100static void
d8045f23 6101elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 6102{
78245035 6103 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 6104
2bc3c89a 6105#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 6106 {
6107 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
6108 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
6109 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
6110 }
caf47ea6 6111#endif
2bc3c89a
AM		 6112}
6113
6114#undef elf_backend_post_process_headers
d8045f23 6115#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 6116#undef elf32_bed
6117#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 6118
d8045f23
NC		 6119#undef elf_backend_add_symbol_hook
6120
2bc3c89a 6121#include "elf32-target.h"
eac338cf 6122
a6cc6b3b
RO		 6123/* Solaris 2. */
6124
6125#undef TARGET_LITTLE_SYM
6d00b590 6126#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 6127#undef TARGET_LITTLE_NAME
6128#define TARGET_LITTLE_NAME "elf32-i386-sol2"
6129
914082d1
L		 6130#undef elf_backend_post_process_headers
6131
a6cc6b3b
RO		 6132/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
6133 objects won't be recognized. */
6134#undef ELF_OSABI
6135
6136#undef elf32_bed
6137#define elf32_bed elf32_i386_sol2_bed
6138
7dc98aea
RO		 6139/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
6140 boundary. */
84865015 6141#undef elf_backend_static_tls_alignment
7dc98aea
RO		 6142#define elf_backend_static_tls_alignment 8
6143
a6cc6b3b
RO		 6144/* The Solaris 2 ABI requires a plt symbol on all platforms.
6145
6146 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
6147 File, p.63. */
84865015 6148#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 6149#define elf_backend_want_plt_sym 1
6150
84865015
NC		 6151#undef elf_backend_strtab_flags
6152#define elf_backend_strtab_flags SHF_STRINGS
6153
5522f910
NC		 6154/* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which
6155 has a type >= SHT_LOOS. Returns TRUE if these fields were initialised
6156 FALSE otherwise. ISECTION is the best guess matching section from the
6157 input bfd IBFD, but it might be NULL. */
6158
84865015 6159static bfd_boolean
5522f910
NC		 6160elf32_i386_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
6161 bfd *obfd ATTRIBUTE_UNUSED,
6162 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
6163 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 6164{
6165 /* PR 19938: FIXME: Need to add code for setting the sh_info
5522f910
NC		 6166 and sh_link fields of Solaris specific section types. */
6167 return FALSE;
84865015 6168
5522f910 6169 /* Based upon Oracle Solaris 11.3 Linkers and Libraries Guide, Ch. 13,
84865015
NC		 6170 Object File Format, Table 13-9 ELF sh_link and sh_info Interpretation:
6171
6172http://docs.oracle.com/cd/E53394_01/html/E54813/chapter6-94076.html#scrolltoc
6173
6174 The following values should be set:
6175
6176Type Link Info
6177-----------------------------------------------------------------------------
6178SHT_SUNW_ancillary The section header index of 0
6179 [0x6fffffee] the associated string table.
6180
6181SHT_SUNW_capinfo The section header index of For a dynamic object, the
6182 [0x6ffffff0] the associated symbol table. section header index of
6183 the associated
6184 SHT_SUNW_capchain table,
6185 otherwise 0.
6186
6187SHT_SUNW_symsort The section header index of 0
6188 [0x6ffffff1] the associated symbol table.
6189
6190SHT_SUNW_tlssort The section header index of 0
6191 [0x6ffffff2] the associated symbol table.
6192
6193SHT_SUNW_LDYNSYM The section header index of One greater than the
6194 [0x6ffffff3] the associated string table. symbol table index of the
6195 This index is the same string last local symbol,
6196 table used by the SHT_DYNSYM STB_LOCAL. Since
6197 section. SHT_SUNW_LDYNSYM only
6198 contains local symbols,
6199 sh_info is equivalent to
6200 the number of symbols in
6201 the table.
6202
6203SHT_SUNW_cap If symbol capabilities exist, If any capabilities refer
6204 [0x6ffffff5] the section header index of to named strings, the
6205 the associated section header index of
6206 SHT_SUNW_capinfo table, the associated string
6207 otherwise 0. table, otherwise 0.
6208
6209SHT_SUNW_move The section header index of 0
6210 [0x6ffffffa] the associated symbol table.
6211
6212SHT_SUNW_COMDAT 0 0
6213 [0x6ffffffb]
6214
6215SHT_SUNW_syminfo The section header index of The section header index
6216 [0x6ffffffc] the associated symbol table. of the associated
6217 .dynamic section.
6218
6219SHT_SUNW_verdef The section header index of The number of version
6220 [0x6ffffffd] the associated string table. definitions within the
6221 section.
6222
6223SHT_SUNW_verneed The section header index of The number of version
6224 [0x6ffffffe] the associated string table. dependencies within the
6225 section.
6226
6227SHT_SUNW_versym The section header index of 0
6228 [0x6fffffff] the associated symbol table. */
84865015
NC		 6229}
6230
5522f910
NC		 6231#undef elf_backend_copy_special_section_fields
6232#define elf_backend_copy_special_section_fields elf32_i386_copy_solaris_special_section_fields
84865015 6233
a6cc6b3b
RO		 6234#include "elf32-target.h"
6235
bf64a951
L		 6236/* Intel MCU support. */
6237
6238static bfd_boolean
6239elf32_iamcu_elf_object_p (bfd *abfd)
6240{
6241 /* Set the right machine number for an IAMCU elf32 file. */
6242 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
6243 return TRUE;
6244}
6245
6246#undef TARGET_LITTLE_SYM
6247#define TARGET_LITTLE_SYM iamcu_elf32_vec
6248#undef TARGET_LITTLE_NAME
6249#define TARGET_LITTLE_NAME "elf32-iamcu"
84865015 6250#undef ELF_ARCH
bf64a951
L		 6251#define ELF_ARCH bfd_arch_iamcu
6252
6253#undef ELF_MACHINE_CODE
6254#define ELF_MACHINE_CODE EM_IAMCU
6255
6256#undef ELF_OSABI
6257
6258#undef elf32_bed
6259#define elf32_bed elf32_iamcu_bed
6260
6261#undef elf_backend_object_p
6262#define elf_backend_object_p elf32_iamcu_elf_object_p
6263
6264#undef elf_backend_static_tls_alignment
6265
6266#undef elf_backend_want_plt_sym
6267#define elf_backend_want_plt_sym 0
6268
84865015 6269#undef elf_backend_strtab_flags
5522f910 6270#undef elf_backend_copy_special_section_fields
84865015 6271
bf64a951
L		 6272#include "elf32-target.h"
6273
6274/* Restore defaults. */
6275#undef ELF_ARCH
6276#define ELF_ARCH bfd_arch_i386
6277#undef ELF_MACHINE_CODE
6278#define ELF_MACHINE_CODE EM_386
6279
a27e4371
RM		 6280/* Native Client support. */
6281
6282#undef TARGET_LITTLE_SYM
6d00b590 6283#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 6284#undef TARGET_LITTLE_NAME
6285#define TARGET_LITTLE_NAME "elf32-i386-nacl"
6286#undef elf32_bed
6287#define elf32_bed elf32_i386_nacl_bed
6288
6289#undef ELF_MAXPAGESIZE
6290#define ELF_MAXPAGESIZE 0x10000
6291
6292/* Restore defaults. */
6293#undef ELF_OSABI
6294#undef elf_backend_want_plt_sym
6295#define elf_backend_want_plt_sym 0
6296#undef elf_backend_post_process_headers
a27e4371
RM		 6297#undef elf_backend_static_tls_alignment
6298
6299/* NaCl uses substantially different PLT entries for the same effects. */
6300
6301#undef elf_backend_plt_alignment
6302#define elf_backend_plt_alignment 5
6303#define NACL_PLT_ENTRY_SIZE 64
6304#define NACLMASK 0xe0 /* 32-byte alignment mask. */
6305
6306static const bfd_byte elf_i386_nacl_plt0_entry[] =
6307 {
6308 0xff, 0x35, /* pushl contents of address */
6309 0, 0, 0, 0, /* replaced with address of .got + 4. */
6310 0x8b, 0x0d, /* movl contents of address, %ecx */
6311 0, 0, 0, 0, /* replaced with address of .got + 8. */
6312 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
6313 0xff, 0xe1 /* jmp *%ecx */
6314 };
6315
6316static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
6317 {
6318 0x8b, 0x0d, /* movl contents of address, %ecx */
6319 0, 0, 0, 0, /* replaced with GOT slot address. */
6320 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
6321 0xff, 0xe1, /* jmp *%ecx */
6322
6323 /* Pad to the next 32-byte boundary with nop instructions. */
6324 0x90,
6325 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6326 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6327
6328 /* Lazy GOT entries point here (32-byte aligned). */
6329 0x68, /* pushl immediate */
6330 0, 0, 0, 0, /* replaced with reloc offset. */
6331 0xe9, /* jmp relative */
6332 0, 0, 0, 0, /* replaced with offset to .plt. */
6333
6334 /* Pad to the next 32-byte boundary with nop instructions. */
6335 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6336 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6337 0x90, 0x90
6338 };
6339
6340static const bfd_byte
6341elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
6342 {
6343 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
6344 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
6345 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
6346 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 6347
6348 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
6349 so pad to that size with nop instructions. */
6350 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 6351 };
6352
6353static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
6354 {
6355 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
6356 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
6357 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
6358 0xff, 0xe1, /* jmp *%ecx */
6359
6360 /* Pad to the next 32-byte boundary with nop instructions. */
6361 0x90,
6362 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6363 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6364
6365 /* Lazy GOT entries point here (32-byte aligned). */
6366 0x68, /* pushl immediate */
6367 0, 0, 0, 0, /* replaced with offset into relocation table. */
6368 0xe9, /* jmp relative */
6369 0, 0, 0, 0, /* replaced with offset to start of .plt. */
6370
6371 /* Pad to the next 32-byte boundary with nop instructions. */
6372 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6373 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6374 0x90, 0x90
6375 };
6376
6377static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
6378 {
6379#if (PLT_CIE_LENGTH != 20 \
6380 || PLT_FDE_LENGTH != 36 \
6381 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
6382 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
6383# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
6384#endif
6385 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
6386 0, 0, 0, 0, /* CIE ID */
6387 1, /* CIE version */
6388 'z', 'R', 0, /* Augmentation string */
6389 1, /* Code alignment factor */
6390 0x7c, /* Data alignment factor: -4 */
6391 8, /* Return address column */
6392 1, /* Augmentation size */
6393 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
6394 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
6395 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
6396 DW_CFA_nop, DW_CFA_nop,
6397
6398 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
6399 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
6400 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
6401 0, 0, 0, 0, /* .plt size goes here */
6402 0, /* Augmentation size */
6403 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
6404 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
6405 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
6406 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
6407 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
6408 13, /* Block length */
6409 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
6410 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
6411 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
6412 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
6413 DW_CFA_nop, DW_CFA_nop
6414 };
6415
6416static const struct elf_i386_plt_layout elf_i386_nacl_plt =
6417 {
6418 elf_i386_nacl_plt0_entry, /* plt0_entry */
6419 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
6420 2, /* plt0_got1_offset */
6421 8, /* plt0_got2_offset */
6422 elf_i386_nacl_plt_entry, /* plt_entry */
6423 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
6424 2, /* plt_got_offset */
6425 33, /* plt_reloc_offset */
6426 38, /* plt_plt_offset */
6427 32, /* plt_lazy_offset */
6428 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
6429 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
6430 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
6431 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
6432 };
6433
6434static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
6435 {
6436 &elf_i386_nacl_plt, /* plt */
6437 0x90, /* plt0_pad_byte: nop insn */
6438 0, /* is_vxworks */
6439 };
6440
64b384e1
RM		 6441static bfd_boolean
6442elf32_i386_nacl_elf_object_p (bfd *abfd)
6443{
6444 /* Set the right machine number for a NaCl i386 ELF32 file. */
6445 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
6446 return TRUE;
6447}
6448
a27e4371
RM		 6449#undef elf_backend_arch_data
6450#define elf_backend_arch_data &elf_i386_nacl_arch_bed
6451
64b384e1
RM		 6452#undef elf_backend_object_p
6453#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 6454#undef elf_backend_modify_segment_map
6455#define elf_backend_modify_segment_map nacl_modify_segment_map
6456#undef elf_backend_modify_program_headers
6457#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 6458#undef elf_backend_final_write_processing
6459#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 6460
a27e4371
RM		 6461#include "elf32-target.h"
6462
5a68afcf 6463/* Restore defaults. */
64b384e1 6464#undef elf_backend_object_p
5a68afcf
RM		 6465#undef elf_backend_modify_segment_map
6466#undef elf_backend_modify_program_headers
887badb3 6467#undef elf_backend_final_write_processing
5a68afcf 6468
eac338cf
PB		 6469/* VxWorks support. */
6470
6471#undef TARGET_LITTLE_SYM
6d00b590 6472#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 6473#undef TARGET_LITTLE_NAME
6474#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 6475#undef ELF_OSABI
a27e4371
RM		 6476#undef elf_backend_plt_alignment
6477#define elf_backend_plt_alignment 4
eac338cf 6478
23209a78
RM		 6479static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
6480 {
25e762b9 6481 &elf_i386_plt, /* plt */
23209a78
RM		 6482 0x90, /* plt0_pad_byte */
6483 1, /* is_vxworks */
6484 };
eac338cf 6485
23209a78
RM		 6486#undef elf_backend_arch_data
6487#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 6488
13285a1b 6489#undef elf_backend_relocs_compatible
eac338cf
PB		 6490#undef elf_backend_add_symbol_hook
6491#define elf_backend_add_symbol_hook \
6492 elf_vxworks_add_symbol_hook
6493#undef elf_backend_link_output_symbol_hook
6494#define elf_backend_link_output_symbol_hook \
9c72ff84 6495 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 6496#undef elf_backend_emit_relocs
6497#define elf_backend_emit_relocs elf_vxworks_emit_relocs
6498#undef elf_backend_final_write_processing
6499#define elf_backend_final_write_processing \
6500 elf_vxworks_final_write_processing
7dc98aea 6501#undef elf_backend_static_tls_alignment
eac338cf
PB		 6502
6503/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
6504 define it. */
6505#undef elf_backend_want_plt_sym
6506#define elf_backend_want_plt_sym 1
6507
6508#undef elf32_bed
6509#define elf32_bed elf32_i386_vxworks_bed
6510
6511#include "elf32-target.h"
GDB Binutils - Deliverables
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