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[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
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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 */
746#define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, EH) \
747 ((EH)->elf.root.type == bfd_link_hash_undefweak \
748 && bfd_link_executable (INFO) \
749 && (elf_i386_hash_table (INFO)->interp == NULL \
750 || !(EH)->has_got_reloc \
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
04ebc307
L		 790 /* Reference count of C/C++ function pointer relocations in read-write
791 section which can be resolved at run-time. */
792 bfd_signed_vma func_pointer_refcount;
793
dd7e64d4
L		 794 /* Information about the GOT PLT entry. Filled when there are both
795 GOT and PLT relocations against the same function. */
796 union gotplt_union plt_got;
797
67a4f2b7
AO		 798 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
799 starting at the end of the jump table. */
800 bfd_vma tlsdesc_got;
13ae64f3
JJ		 801};
802
803#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
804
805struct elf_i386_obj_tdata
806{
807 struct elf_obj_tdata root;
808
809 /* tls_type for each local got entry. */
810 char *local_got_tls_type;
67a4f2b7
AO		 811
812 /* GOTPLT entries for TLS descriptors. */
813 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 814};
815
13ae64f3
JJ		 816#define elf_i386_tdata(abfd) \
817 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
818
819#define elf_i386_local_got_tls_type(abfd) \
820 (elf_i386_tdata (abfd)->local_got_tls_type)
821
67a4f2b7
AO		 822#define elf_i386_local_tlsdesc_gotent(abfd) \
823 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
824
0ffa91dd
NC		 825#define is_i386_elf(bfd) \
826 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
827 && elf_tdata (bfd) != NULL \
4dfe6ac6 828 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 829
b34976b6 830static bfd_boolean
55fd94b0 831elf_i386_mkobject (bfd *abfd)
13ae64f3 832{
0ffa91dd 833 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 834 I386_ELF_DATA);
13ae64f3 835}
cedb70c5 836
252b5132
RH		 837/* i386 ELF linker hash table. */
838
839struct elf_i386_link_hash_table
840{
ebe50bae 841 struct elf_link_hash_table elf;
252b5132 842
6725bdbf 843 /* Short-cuts to get to dynamic linker sections. */
aec6b87e 844 asection *interp;
6725bdbf
AM		 845 asection *sdynbss;
846 asection *srelbss;
e41b3a13 847 asection *plt_eh_frame;
dd7e64d4 848 asection *plt_got;
9635fe29 849
4dfe6ac6
NC		 850 union
851 {
13ae64f3
JJ		 852 bfd_signed_vma refcount;
853 bfd_vma offset;
854 } tls_ldm_got;
855
67a4f2b7
AO		 856 /* The amount of space used by the reserved portion of the sgotplt
857 section, plus whatever space is used by the jump slots. */
858 bfd_vma sgotplt_jump_table_size;
859
87d72d41
AM		 860 /* Small local sym cache. */
861 struct sym_cache sym_cache;
9f03412a
AO		 862
863 /* _TLS_MODULE_BASE_ symbol. */
864 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 865
866 /* Used by local STT_GNU_IFUNC symbols. */
867 htab_t loc_hash_table;
4dfe6ac6
NC		 868 void * loc_hash_memory;
869
870 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
871 asection *srelplt2;
872
4dfe6ac6
NC		 873 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
874 bfd_vma next_tls_desc_index;
e1f98742
L		 875
876 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
877 bfd_vma next_jump_slot_index;
878
879 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
880 bfd_vma next_irelative_index;
6725bdbf 881};
252b5132
RH		 882
883/* Get the i386 ELF linker hash table from a link_info structure. */
884
885#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 886 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
887 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 888
67a4f2b7 889#define elf_i386_compute_jump_table_size(htab) \
998d811a 890 ((htab)->elf.srelplt->reloc_count * 4)
67a4f2b7 891
252b5132
RH		 892/* Create an entry in an i386 ELF linker hash table. */
893
894static struct bfd_hash_entry *
eb4ff4d6
L		 895elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
896 struct bfd_hash_table *table,
897 const char *string)
252b5132 898{
252b5132
RH		 899 /* Allocate the structure if it has not already been allocated by a
900 subclass. */
ebe50bae
AM		 901 if (entry == NULL)
902 {
a50b1753
NC		 903 entry = (struct bfd_hash_entry *)
904 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 905 if (entry == NULL)
906 return entry;
907 }
252b5132
RH		 908
909 /* Call the allocation method of the superclass. */
ebe50bae
AM		 910 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
911 if (entry != NULL)
252b5132 912 {
ebe50bae
AM		 913 struct elf_i386_link_hash_entry *eh;
914
915 eh = (struct elf_i386_link_hash_entry *) entry;
916 eh->dyn_relocs = NULL;
13ae64f3 917 eh->tls_type = GOT_UNKNOWN;
d5597ebc 918 eh->gotoff_ref = 0;
aec6b87e
L		 919 eh->has_got_reloc = 0;
920 eh->has_non_got_reloc = 0;
04ebc307 921 eh->func_pointer_refcount = 0;
dd7e64d4 922 eh->plt_got.offset = (bfd_vma) -1;
67a4f2b7 923 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 924 }
925
ebe50bae 926 return entry;
252b5132
RH		 927}
928
c25bc9fc
L		 929/* Compute a hash of a local hash entry. We use elf_link_hash_entry
930 for local symbol so that we can handle local STT_GNU_IFUNC symbols
931 as global symbol. We reuse indx and dynstr_index for local symbol
932 hash since they aren't used by global symbols in this backend. */
933
934static hashval_t
935elf_i386_local_htab_hash (const void *ptr)
936{
937 struct elf_link_hash_entry *h
938 = (struct elf_link_hash_entry *) ptr;
d2149d72 939 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 940}
941
942/* Compare local hash entries. */
943
944static int
945elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
946{
947 struct elf_link_hash_entry *h1
948 = (struct elf_link_hash_entry *) ptr1;
949 struct elf_link_hash_entry *h2
950 = (struct elf_link_hash_entry *) ptr2;
951
952 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
953}
954
955/* Find and/or create a hash entry for local symbol. */
956
957static struct elf_link_hash_entry *
958elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
959 bfd *abfd, const Elf_Internal_Rela *rel,
960 bfd_boolean create)
961{
962 struct elf_i386_link_hash_entry e, *ret;
963 asection *sec = abfd->sections;
d2149d72
L		 964 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
965 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 966 void **slot;
967
968 e.elf.indx = sec->id;
969 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
970 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
971 create ? INSERT : NO_INSERT);
972
973 if (!slot)
974 return NULL;
975
976 if (*slot)
977 {
978 ret = (struct elf_i386_link_hash_entry *) *slot;
979 return &ret->elf;
980 }
981
982 ret = (struct elf_i386_link_hash_entry *)
983 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
984 sizeof (struct elf_i386_link_hash_entry));
985 if (ret)
986 {
987 memset (ret, 0, sizeof (*ret));
988 ret->elf.indx = sec->id;
989 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
990 ret->elf.dynindx = -1;
04ebc307 991 ret->func_pointer_refcount = 0;
dd7e64d4 992 ret->plt_got.offset = (bfd_vma) -1;
c25bc9fc
L		 993 *slot = ret;
994 }
995 return &ret->elf;
996}
997
68faa637
AM		 998/* Destroy an i386 ELF linker hash table. */
999
1000static void
d495ab0d 1001elf_i386_link_hash_table_free (bfd *obfd)
68faa637
AM		 1002{
1003 struct elf_i386_link_hash_table *htab
d495ab0d 1004 = (struct elf_i386_link_hash_table *) obfd->link.hash;
68faa637
AM		 1005
1006 if (htab->loc_hash_table)
1007 htab_delete (htab->loc_hash_table);
1008 if (htab->loc_hash_memory)
1009 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
d495ab0d 1010 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 1011}
1012
252b5132
RH		 1013/* Create an i386 ELF linker hash table. */
1014
1015static struct bfd_link_hash_table *
55fd94b0 1016elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 1017{
1018 struct elf_i386_link_hash_table *ret;
dc810e39 1019 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 1020
7bf52ea2 1021 ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt);
ebe50bae 1022 if (ret == NULL)
252b5132
RH		 1023 return NULL;
1024
eb4ff4d6
L		 1025 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
1026 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 1027 sizeof (struct elf_i386_link_hash_entry),
1028 I386_ELF_DATA))
252b5132 1029 {
e2d34d7d 1030 free (ret);
252b5132
RH		 1031 return NULL;
1032 }
1033
c25bc9fc
L		 1034 ret->loc_hash_table = htab_try_create (1024,
1035 elf_i386_local_htab_hash,
1036 elf_i386_local_htab_eq,
1037 NULL);
1038 ret->loc_hash_memory = objalloc_create ();
1039 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1040 {
d495ab0d 1041 elf_i386_link_hash_table_free (abfd);
c25bc9fc
L		 1042 return NULL;
1043 }
d495ab0d 1044 ret->elf.root.hash_table_free = elf_i386_link_hash_table_free;
c25bc9fc 1045
ebe50bae 1046 return &ret->elf.root;
252b5132
RH		 1047}
1048
6725bdbf
AM		 1049/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
1050 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
1051 hash table. */
1052
b34976b6 1053static bfd_boolean
55fd94b0 1054elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 1055{
1056 struct elf_i386_link_hash_table *htab;
1057
6725bdbf 1058 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 1059 return FALSE;
6725bdbf 1060
6de2ae4a 1061 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1062 if (htab == NULL)
1063 return FALSE;
1064
3d4d4302 1065 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
d5597ebc 1066 if (!htab->sdynbss)
6725bdbf
AM		 1067 abort ();
1068
0e1862bb 1069 if (bfd_link_executable (info))
d5597ebc
L		 1070 {
1071 /* Always allow copy relocs for building executables. */
1072 asection *s = bfd_get_linker_section (dynobj, ".rel.bss");
1073 if (s == NULL)
1074 {
1075 const struct elf_backend_data *bed = get_elf_backend_data (dynobj);
1076 s = bfd_make_section_anyway_with_flags (dynobj,
1077 ".rel.bss",
1078 (bed->dynamic_sec_flags
1079 | SEC_READONLY));
1080 if (s == NULL
1081 || ! bfd_set_section_alignment (dynobj, s,
1082 bed->s->log_file_align))
1083 return FALSE;
1084 }
1085 htab->srelbss = s;
1086 }
1087
23209a78 1088 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1089 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1090 &htab->srelplt2))
711de32c 1091 return FALSE;
eac338cf 1092
e41b3a13 1093 if (!info->no_ld_generated_unwind_info
2fe0fd06 1094 && htab->plt_eh_frame == NULL
e4de50d4 1095 && htab->elf.splt != NULL)
e41b3a13 1096 {
bbf96e4e
L		 1097 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1098 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1099 | SEC_LINKER_CREATED);
e41b3a13 1100 htab->plt_eh_frame
bbf96e4e 1101 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ		 1102 if (htab->plt_eh_frame == NULL
1103 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1104 return FALSE;
e41b3a13
JJ		 1105 }
1106
b34976b6 1107 return TRUE;
6725bdbf
AM		 1108}
1109
ebe50bae
AM		 1110/* Copy the extra info we tack onto an elf_link_hash_entry. */
1111
51b64d56 1112static void
fcfa13d2 1113elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1114 struct elf_link_hash_entry *dir,
1115 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1116{
1117 struct elf_i386_link_hash_entry *edir, *eind;
1118
1119 edir = (struct elf_i386_link_hash_entry *) dir;
1120 eind = (struct elf_i386_link_hash_entry *) ind;
1121
bbd7ec4a 1122 if (eind->dyn_relocs != NULL)
ebe50bae 1123 {
bbd7ec4a
AM		 1124 if (edir->dyn_relocs != NULL)
1125 {
e03a8ed8
L		 1126 struct elf_dyn_relocs **pp;
1127 struct elf_dyn_relocs *p;
bbd7ec4a 1128
fcfa13d2 1129 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1130 list. Merge any entries against the same section. */
1131 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1132 {
e03a8ed8 1133 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1134
1135 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1136 if (q->sec == p->sec)
1137 {
1138 q->pc_count += p->pc_count;
1139 q->count += p->count;
1140 *pp = p->next;
1141 break;
1142 }
1143 if (q == NULL)
1144 pp = &p->next;
1145 }
1146 *pp = edir->dyn_relocs;
1147 }
1148
ebe50bae
AM		 1149 edir->dyn_relocs = eind->dyn_relocs;
1150 eind->dyn_relocs = NULL;
1151 }
ebe50bae 1152
cd67d266
JJ		 1153 if (ind->root.type == bfd_link_hash_indirect
1154 && dir->got.refcount <= 0)
1155 {
1156 edir->tls_type = eind->tls_type;
1157 eind->tls_type = GOT_UNKNOWN;
1158 }
81848ca0 1159
d5597ebc
L		 1160 /* Copy gotoff_ref so that elf_i386_adjust_dynamic_symbol will
1161 generate a R_386_COPY reloc. */
1162 edir->gotoff_ref |= eind->gotoff_ref;
1163
aec6b87e
L		 1164 edir->has_got_reloc |= eind->has_got_reloc;
1165 edir->has_non_got_reloc |= eind->has_non_got_reloc;
1166
81848ca0
AM		 1167 if (ELIMINATE_COPY_RELOCS
1168 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1169 && dir->dynamic_adjusted)
1170 {
1171 /* If called to transfer flags for a weakdef during processing
1172 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1173 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1174 dir->ref_dynamic |= ind->ref_dynamic;
1175 dir->ref_regular |= ind->ref_regular;
1176 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1177 dir->needs_plt |= ind->needs_plt;
1178 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1179 }
81848ca0 1180 else
04ebc307
L		 1181 {
1182 if (eind->func_pointer_refcount > 0)
1183 {
1184 edir->func_pointer_refcount += eind->func_pointer_refcount;
1185 eind->func_pointer_refcount = 0;
1186 }
1187
1188 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1189 }
ebe50bae
AM		 1190}
1191
142411ca
L		 1192/* Return TRUE if the TLS access code sequence support transition
1193 from R_TYPE. */
1194
1195static bfd_boolean
1196elf_i386_check_tls_transition (bfd *abfd, asection *sec,
1197 bfd_byte *contents,
1198 Elf_Internal_Shdr *symtab_hdr,
1199 struct elf_link_hash_entry **sym_hashes,
1200 unsigned int r_type,
1201 const Elf_Internal_Rela *rel,
1202 const Elf_Internal_Rela *relend)
13ae64f3 1203{
142411ca
L		 1204 unsigned int val, type;
1205 unsigned long r_symndx;
1206 struct elf_link_hash_entry *h;
1207 bfd_vma offset;
1208
1209 /* Get the section contents. */
1210 if (contents == NULL)
1211 {
1212 if (elf_section_data (sec)->this_hdr.contents != NULL)
1213 contents = elf_section_data (sec)->this_hdr.contents;
1214 else
1215 {
1216 /* FIXME: How to better handle error condition? */
1217 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1218 return FALSE;
13ae64f3 1219
142411ca
L		 1220 /* Cache the section contents for elf_link_input_bfd. */
1221 elf_section_data (sec)->this_hdr.contents = contents;
1222 }
1223 }
1224
1225 offset = rel->r_offset;
13ae64f3 1226 switch (r_type)
142411ca
L		 1227 {
1228 case R_386_TLS_GD:
1229 case R_386_TLS_LDM:
1230 if (offset < 2 || (rel + 1) >= relend)
1231 return FALSE;
1232
1233 type = bfd_get_8 (abfd, contents + offset - 2);
1234 if (r_type == R_386_TLS_GD)
1235 {
09e8c3bf 1236 /* Check transition from GD access model. Only
142411ca
L		 1237 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1238 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1239 can transit to different access model. */
1240 if ((offset + 10) > sec->size ||
1241 (type != 0x8d && type != 0x04))
1242 return FALSE;
1243
1244 val = bfd_get_8 (abfd, contents + offset - 1);
1245 if (type == 0x04)
1246 {
1247 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1248 if (offset < 3)
1249 return FALSE;
1250
1251 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1252 return FALSE;
1253
1254 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1255 return FALSE;
1256 }
1257 else
1258 {
1259 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1260 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1261 return FALSE;
1262
1263 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1264 return FALSE;
1265 }
1266 }
1267 else
1268 {
1269 /* Check transition from LD access model. Only
1270 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1271 can transit to different access model. */
1272 if (type != 0x8d || (offset + 9) > sec->size)
1273 return FALSE;
1274
1275 val = bfd_get_8 (abfd, contents + offset - 1);
1276 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1277 return FALSE;
1278 }
1279
1280 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1281 return FALSE;
1282
1283 r_symndx = ELF32_R_SYM (rel[1].r_info);
1284 if (r_symndx < symtab_hdr->sh_info)
1285 return FALSE;
1286
1287 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b
L		 1288 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1289 may be versioned. */
142411ca
L		 1290 return (h != NULL
1291 && h->root.root.string != NULL
1292 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1293 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
c4fb387b
L		 1294 && (strncmp (h->root.root.string, "___tls_get_addr",
1295 15) == 0));
142411ca
L		 1296
1297 case R_386_TLS_IE:
1298 /* Check transition from IE access model:
1299 movl foo@indntpoff(%rip), %eax
1300 movl foo@indntpoff(%rip), %reg
1301 addl foo@indntpoff(%rip), %reg
1302 */
1303
1304 if (offset < 1 || (offset + 4) > sec->size)
1305 return FALSE;
1306
1307 /* Check "movl foo@tpoff(%rip), %eax" first. */
1308 val = bfd_get_8 (abfd, contents + offset - 1);
1309 if (val == 0xa1)
1310 return TRUE;
1311
1312 if (offset < 2)
1313 return FALSE;
1314
1315 /* Check movl|addl foo@tpoff(%rip), %reg. */
1316 type = bfd_get_8 (abfd, contents + offset - 2);
1317 return ((type == 0x8b || type == 0x03)
1318 && (val & 0xc7) == 0x05);
1319
1320 case R_386_TLS_GOTIE:
1321 case R_386_TLS_IE_32:
1322 /* Check transition from {IE_32,GOTIE} access model:
1323 subl foo@{tpoff,gontoff}(%reg1), %reg2
1324 movl foo@{tpoff,gontoff}(%reg1), %reg2
1325 addl foo@{tpoff,gontoff}(%reg1), %reg2
1326 */
1327
1328 if (offset < 2 || (offset + 4) > sec->size)
1329 return FALSE;
1330
1331 val = bfd_get_8 (abfd, contents + offset - 1);
1332 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1333 return FALSE;
1334
1335 type = bfd_get_8 (abfd, contents + offset - 2);
1336 return type == 0x8b || type == 0x2b || type == 0x03;
1337
1338 case R_386_TLS_GOTDESC:
1339 /* Check transition from GDesc access model:
1340 leal x@tlsdesc(%ebx), %eax
1341
1342 Make sure it's a leal adding ebx to a 32-bit offset
1343 into any register, although it's probably almost always
1344 going to be eax. */
1345
1346 if (offset < 2 || (offset + 4) > sec->size)
1347 return FALSE;
1348
1349 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1350 return FALSE;
1351
1352 val = bfd_get_8 (abfd, contents + offset - 1);
1353 return (val & 0xc7) == 0x83;
1354
1355 case R_386_TLS_DESC_CALL:
1356 /* Check transition from GDesc access model:
1357 call *x@tlsdesc(%rax)
1358 */
1359 if (offset + 2 <= sec->size)
1360 {
1361 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM		 1362 static const unsigned char call[] = { 0xff, 0x10 };
1363 return memcmp (contents + offset, call, 2) == 0;
142411ca
L		 1364 }
1365
1366 return FALSE;
1367
1368 default:
1369 abort ();
1370 }
1371}
1372
1373/* Return TRUE if the TLS access transition is OK or no transition
1374 will be performed. Update R_TYPE if there is a transition. */
1375
1376static bfd_boolean
1377elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1378 asection *sec, bfd_byte *contents,
1379 Elf_Internal_Shdr *symtab_hdr,
1380 struct elf_link_hash_entry **sym_hashes,
1381 unsigned int *r_type, int tls_type,
1382 const Elf_Internal_Rela *rel,
1383 const Elf_Internal_Rela *relend,
4c544807
L		 1384 struct elf_link_hash_entry *h,
1385 unsigned long r_symndx)
142411ca
L		 1386{
1387 unsigned int from_type = *r_type;
1388 unsigned int to_type = from_type;
1389 bfd_boolean check = TRUE;
1390
bb1cb422
L		 1391 /* Skip TLS transition for functions. */
1392 if (h != NULL
1393 && (h->type == STT_FUNC
1394 || h->type == STT_GNU_IFUNC))
1395 return TRUE;
1396
142411ca 1397 switch (from_type)
13ae64f3
JJ		 1398 {
1399 case R_386_TLS_GD:
67a4f2b7
AO		 1400 case R_386_TLS_GOTDESC:
1401 case R_386_TLS_DESC_CALL:
13ae64f3 1402 case R_386_TLS_IE_32:
37e55690
JJ		 1403 case R_386_TLS_IE:
1404 case R_386_TLS_GOTIE:
0e1862bb 1405 if (bfd_link_executable (info))
142411ca
L		 1406 {
1407 if (h == NULL)
1408 to_type = R_386_TLS_LE_32;
1409 else if (from_type != R_386_TLS_IE
1410 && from_type != R_386_TLS_GOTIE)
1411 to_type = R_386_TLS_IE_32;
1412 }
1413
1414 /* When we are called from elf_i386_relocate_section, CONTENTS
1415 isn't NULL and there may be additional transitions based on
1416 TLS_TYPE. */
1417 if (contents != NULL)
1418 {
1419 unsigned int new_to_type = to_type;
1420
0e1862bb 1421 if (bfd_link_executable (info)
142411ca
L		 1422 && h != NULL
1423 && h->dynindx == -1
1424 && (tls_type & GOT_TLS_IE))
1425 new_to_type = R_386_TLS_LE_32;
1426
1427 if (to_type == R_386_TLS_GD
1428 || to_type == R_386_TLS_GOTDESC
1429 || to_type == R_386_TLS_DESC_CALL)
1430 {
1431 if (tls_type == GOT_TLS_IE_POS)
1432 new_to_type = R_386_TLS_GOTIE;
1433 else if (tls_type & GOT_TLS_IE)
1434 new_to_type = R_386_TLS_IE_32;
1435 }
1436
1437 /* We checked the transition before when we were called from
1438 elf_i386_check_relocs. We only want to check the new
1439 transition which hasn't been checked before. */
1440 check = new_to_type != to_type && from_type == to_type;
1441 to_type = new_to_type;
1442 }
1443
1444 break;
1445
13ae64f3 1446 case R_386_TLS_LDM:
0e1862bb 1447 if (bfd_link_executable (info))
142411ca
L		 1448 to_type = R_386_TLS_LE_32;
1449 break;
1450
1451 default:
1452 return TRUE;
1453 }
1454
1455 /* Return TRUE if there is no transition. */
1456 if (from_type == to_type)
1457 return TRUE;
1458
1459 /* Check if the transition can be performed. */
1460 if (check
1461 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1462 symtab_hdr, sym_hashes,
1463 from_type, rel, relend))
1464 {
2f629d23 1465 reloc_howto_type *from, *to;
4c544807 1466 const char *name;
142411ca
L		 1467
1468 from = elf_i386_rtype_to_howto (abfd, from_type);
1469 to = elf_i386_rtype_to_howto (abfd, to_type);
1470
4c544807
L		 1471 if (h)
1472 name = h->root.root.string;
1473 else
1474 {
4c544807 1475 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1476
4c544807 1477 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1478 if (htab == NULL)
1479 name = "*unknown*";
1480 else
1481 {
1482 Elf_Internal_Sym *isym;
1483
1484 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1485 abfd, r_symndx);
1486 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1487 }
4c544807
L		 1488 }
1489
142411ca
L		 1490 (*_bfd_error_handler)
1491 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1492 "in section `%A' failed"),
4c544807 1493 abfd, sec, from->name, to->name, name,
142411ca
L		 1494 (unsigned long) rel->r_offset);
1495 bfd_set_error (bfd_error_bad_value);
1496 return FALSE;
13ae64f3
JJ		 1497 }
1498
142411ca
L		 1499 *r_type = to_type;
1500 return TRUE;
13ae64f3
JJ		 1501}
1502
c1d11331
L		 1503/* Rename some of the generic section flags to better document how they
1504 are used here. */
02a86693 1505#define need_convert_load sec_flg0
c1d11331 1506
252b5132 1507/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1508 calculate needed space in the global offset table, procedure linkage
1509 table, and dynamic reloc sections. */
252b5132 1510
b34976b6 1511static bfd_boolean
55fd94b0
AM		 1512elf_i386_check_relocs (bfd *abfd,
1513 struct bfd_link_info *info,
1514 asection *sec,
1515 const Elf_Internal_Rela *relocs)
252b5132 1516{
6725bdbf 1517 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1518 Elf_Internal_Shdr *symtab_hdr;
1519 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1520 const Elf_Internal_Rela *rel;
1521 const Elf_Internal_Rela *rel_end;
252b5132 1522 asection *sreloc;
dd7e64d4 1523 bfd_boolean use_plt_got;
252b5132 1524
0e1862bb 1525 if (bfd_link_relocatable (info))
b34976b6 1526 return TRUE;
252b5132 1527
0ffa91dd
NC		 1528 BFD_ASSERT (is_i386_elf (abfd));
1529
6725bdbf 1530 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1531 if (htab == NULL)
1532 return FALSE;
1533
dd7e64d4
L		 1534 use_plt_got = (!get_elf_i386_backend_data (abfd)->is_vxworks
1535 && (get_elf_i386_backend_data (abfd)
1536 == &elf_i386_arch_bed));
1537
0ffa91dd 1538 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1539 sym_hashes = elf_sym_hashes (abfd);
252b5132 1540
252b5132
RH		 1541 sreloc = NULL;
1542
1543 rel_end = relocs + sec->reloc_count;
1544 for (rel = relocs; rel < rel_end; rel++)
1545 {
13ae64f3 1546 unsigned int r_type;
252b5132
RH		 1547 unsigned long r_symndx;
1548 struct elf_link_hash_entry *h;
d5597ebc 1549 struct elf_i386_link_hash_entry *eh;
4c544807
L		 1550 Elf_Internal_Sym *isym;
1551 const char *name;
06a6a421 1552 bfd_boolean size_reloc;
252b5132
RH		 1553
1554 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1555 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1556
d9bc7a44 1557 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1558 {
d003868e
AM		 1559 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1560 abfd,
8f615d07 1561 r_symndx);
b34976b6 1562 return FALSE;
f5f31454
L		 1563 }
1564
252b5132 1565 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1566 {
1567 /* A local symbol. */
c2e61a4e
L		 1568 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1569 abfd, r_symndx);
1570 if (isym == NULL)
1571 return FALSE;
c25bc9fc
L		 1572
1573 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1574 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1575 {
9fff0c39 1576 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1577 if (h == NULL)
c2e61a4e 1578 return FALSE;
6bbec505 1579
c25bc9fc
L		 1580 /* Fake a STT_GNU_IFUNC symbol. */
1581 h->type = STT_GNU_IFUNC;
1582 h->def_regular = 1;
1583 h->ref_regular = 1;
1584 h->forced_local = 1;
1585 h->root.type = bfd_link_hash_defined;
1586 }
1587 else
1588 h = NULL;
1589 }
252b5132 1590 else
71cb9464 1591 {
4c544807 1592 isym = NULL;
71cb9464
L		 1593 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1594 while (h->root.type == bfd_link_hash_indirect
1595 || h->root.type == bfd_link_hash_warning)
1596 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1597 }
cbe950e9 1598
d5597ebc 1599 eh = (struct elf_i386_link_hash_entry *) h;
c25bc9fc
L		 1600 if (h != NULL)
1601 {
cbe950e9
L		 1602 /* Create the ifunc sections for static executables. If we
1603 never see an indirect function symbol nor we are building
1604 a static executable, those sections will be empty and
1605 won't appear in output. */
1606 switch (r_type)
1607 {
1608 default:
1609 break;
1610
d5597ebc
L		 1611 case R_386_GOTOFF:
1612 eh->gotoff_ref = 1;
cbe950e9
L		 1613 case R_386_32:
1614 case R_386_PC32:
1615 case R_386_PLT32:
1616 case R_386_GOT32:
02a86693 1617 case R_386_GOT32X:
9d4057ee
AM		 1618 if (htab->elf.dynobj == NULL)
1619 htab->elf.dynobj = abfd;
1620 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1621 return FALSE;
cbe950e9
L		 1622 break;
1623 }
1624
ad1e85de
L		 1625 /* It is referenced by a non-shared object. */
1626 h->ref_regular = 1;
61315175 1627 h->root.non_ir_ref = 1;
13a2df29
L		 1628
1629 if (h->type == STT_GNU_IFUNC)
1630 elf_tdata (info->output_bfd)->has_gnu_symbols
1631 |= elf_gnu_symbol_ifunc;
71cb9464 1632 }
252b5132 1633
142411ca
L		 1634 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1635 symtab_hdr, sym_hashes,
1636 &r_type, GOT_UNKNOWN,
23209a78 1637 rel, rel_end, h, r_symndx))
c2e61a4e 1638 return FALSE;
13ae64f3
JJ		 1639
1640 switch (r_type)
252b5132 1641 {
37e55690
JJ		 1642 case R_386_TLS_LDM:
1643 htab->tls_ldm_got.refcount += 1;
1644 goto create_got;
1645
1646 case R_386_PLT32:
1647 /* This symbol requires a procedure linkage table entry. We
1648 actually build the entry in adjust_dynamic_symbol,
1649 because this might be a case of linking PIC code which is
1650 never referenced by a dynamic object, in which case we
1651 don't need to generate a procedure linkage table entry
1652 after all. */
1653
1654 /* If this is a local symbol, we resolve it directly without
1655 creating a procedure linkage table entry. */
1656 if (h == NULL)
1657 continue;
1658
aec6b87e 1659 eh->has_got_reloc = 1;
f5385ebf 1660 h->needs_plt = 1;
37e55690
JJ		 1661 h->plt.refcount += 1;
1662 break;
1663
6a3e1bae 1664 case R_386_SIZE32:
06a6a421 1665 size_reloc = TRUE;
6a3e1bae
L		 1666 goto do_size;
1667
13ae64f3 1668 case R_386_TLS_IE_32:
37e55690
JJ		 1669 case R_386_TLS_IE:
1670 case R_386_TLS_GOTIE:
0e1862bb 1671 if (!bfd_link_executable (info))
13ae64f3 1672 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1673 /* Fall through */
1674
252b5132 1675 case R_386_GOT32:
02a86693 1676 case R_386_GOT32X:
13ae64f3 1677 case R_386_TLS_GD:
67a4f2b7
AO		 1678 case R_386_TLS_GOTDESC:
1679 case R_386_TLS_DESC_CALL:
252b5132 1680 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1681 {
1682 int tls_type, old_tls_type;
1683
1684 switch (r_type)
1685 {
1686 default:
02a86693
L		 1687 case R_386_GOT32:
1688 case R_386_GOT32X:
1689 tls_type = GOT_NORMAL;
1690 break;
13ae64f3 1691 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1692 case R_386_TLS_GOTDESC:
1693 case R_386_TLS_DESC_CALL:
1694 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1695 case R_386_TLS_IE_32:
1696 if (ELF32_R_TYPE (rel->r_info) == r_type)
1697 tls_type = GOT_TLS_IE_NEG;
1698 else
ebcfb3c0
JJ		 1699 /* If this is a GD->IE transition, we may use either of
1700 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1701 tls_type = GOT_TLS_IE;
1702 break;
1703 case R_386_TLS_IE:
1704 case R_386_TLS_GOTIE:
1705 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1706 }
1707
1708 if (h != NULL)
1709 {
1710 h->got.refcount += 1;
1711 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1712 }
1713 else
1714 {
1715 bfd_signed_vma *local_got_refcounts;
1716
1717 /* This is a global offset table entry for a local symbol. */
1718 local_got_refcounts = elf_local_got_refcounts (abfd);
1719 if (local_got_refcounts == NULL)
1720 {
1721 bfd_size_type size;
1722
1723 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1724 size *= (sizeof (bfd_signed_vma)
1725 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1726 local_got_refcounts = (bfd_signed_vma *)
1727 bfd_zalloc (abfd, size);
13ae64f3 1728 if (local_got_refcounts == NULL)
c2e61a4e 1729 return FALSE;
13ae64f3 1730 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1731 elf_i386_local_tlsdesc_gotent (abfd)
1732 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1733 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1734 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1735 }
1736 local_got_refcounts[r_symndx] += 1;
1737 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1738 }
1739
37e55690
JJ		 1740 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1741 tls_type |= old_tls_type;
13ae64f3
JJ		 1742 /* If a TLS symbol is accessed using IE at least once,
1743 there is no point to use dynamic model for it. */
ebcfb3c0 1744 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1745 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1746 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1747 {
67a4f2b7 1748 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1749 tls_type = old_tls_type;
67a4f2b7
AO		 1750 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1751 && GOT_TLS_GD_ANY_P (tls_type))
1752 tls_type |= old_tls_type;
13ae64f3
JJ		 1753 else
1754 {
09a24cbf 1755 if (h)
4c544807
L		 1756 name = h->root.root.string;
1757 else
1758 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1759 NULL);
13ae64f3 1760 (*_bfd_error_handler)
d003868e 1761 (_("%B: `%s' accessed both as normal and "
55fd94b0 1762 "thread local symbol"),
4c544807 1763 abfd, name);
68c4a57e 1764 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1765 return FALSE;
13ae64f3
JJ		 1766 }
1767 }
1768
1769 if (old_tls_type != tls_type)
1770 {
1771 if (h != NULL)
1772 elf_i386_hash_entry (h)->tls_type = tls_type;
1773 else
1774 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1775 }
1776 }
0ac8d2ca
AM		 1777 /* Fall through */
1778
1779 case R_386_GOTOFF:
1780 case R_386_GOTPC:
13ae64f3 1781 create_got:
6de2ae4a 1782 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 1783 {
1784 if (htab->elf.dynobj == NULL)
1785 htab->elf.dynobj = abfd;
6de2ae4a 1786 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1787 return FALSE;
0ac8d2ca 1788 }
37e55690 1789 if (r_type != R_386_TLS_IE)
aec6b87e
L		 1790 {
1791 if (eh != NULL)
1792 eh->has_got_reloc = 1;
1793 break;
1794 }
37e55690 1795 /* Fall through */
252b5132 1796
37e55690
JJ		 1797 case R_386_TLS_LE_32:
1798 case R_386_TLS_LE:
aec6b87e
L		 1799 if (eh != NULL)
1800 eh->has_got_reloc = 1;
0e1862bb 1801 if (bfd_link_executable (info))
37e55690 1802 break;
bffbf940 1803 info->flags |= DF_STATIC_TLS;
aec6b87e 1804 goto do_relocation;
252b5132
RH		 1805
1806 case R_386_32:
1807 case R_386_PC32:
aec6b87e
L		 1808 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
1809 eh->has_non_got_reloc = 1;
1810do_relocation:
d1ed1c7d
L		 1811 /* STT_GNU_IFUNC symbol must go through PLT even if it is
1812 locally defined and undefined symbol may turn out to be
1813 a STT_GNU_IFUNC symbol later. */
1814 if (h != NULL
1815 && (bfd_link_executable (info)
1816 || ((h->type == STT_GNU_IFUNC
1817 || h->root.type == bfd_link_hash_undefweak
1818 || h->root.type == bfd_link_hash_undefined)
1819 && SYMBOLIC_BIND (info, h))))
6725bdbf 1820 {
12d0ee4a 1821 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1822 need a copy reloc. We can't check reliably at this
1823 stage whether the section is read-only, as input
1824 sections have not yet been mapped to output sections.
1825 Tentatively set the flag for now, and correct in
1826 adjust_dynamic_symbol. */
f5385ebf 1827 h->non_got_ref = 1;
12d0ee4a
AM		 1828
1829 /* We may need a .plt entry if the function this reloc
1830 refers to is in a shared lib. */
51b64d56 1831 h->plt.refcount += 1;
4b627c18
L		 1832 if (r_type == R_386_PC32)
1833 {
1834 /* Since something like ".long foo - ." may be used
1835 as pointer, make sure that PLT is used if foo is
1836 a function defined in a shared library. */
1837 if ((sec->flags & SEC_CODE) == 0)
1838 h->pointer_equality_needed = 1;
1839 }
1840 else
04ebc307
L		 1841 {
1842 h->pointer_equality_needed = 1;
1843 /* R_386_32 can be resolved at run-time. */
1844 if (r_type == R_386_32
1845 && (sec->flags & SEC_READONLY) == 0)
1846 eh->func_pointer_refcount += 1;
1847 }
6725bdbf 1848 }
7843f00e 1849
06a6a421 1850 size_reloc = FALSE;
6a3e1bae 1851do_size:
252b5132 1852 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1853 against a global symbol, or a non PC relative reloc
1854 against a local symbol, then we need to copy the reloc
1855 into the shared library. However, if we are linking with
1856 -Bsymbolic, we do not need to copy a reloc against a
1857 global symbol which is defined in an object we are
1858 including in the link (i.e., DEF_REGULAR is set). At
1859 this point we have not seen all the input files, so it is
1860 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1861 later (it is never cleared). In case of a weak definition,
1862 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1863 a shared library. We account for that possibility below by
1f655a09
L		 1864 storing information in the relocs_copied field of the hash
1865 table entry. A similar situation occurs when creating
1866 shared libraries and symbol visibility changes render the
12d0ee4a 1867 symbol local.
56882138 1868
12d0ee4a
AM		 1869 If on the other hand, we are creating an executable, we
1870 may need to keep relocations for symbols satisfied by a
1871 dynamic library if we manage to avoid copy relocs for the
1872 symbol. */
0e1862bb 1873 if ((bfd_link_pic (info)
12d0ee4a 1874 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1875 && (r_type != R_386_PC32
12d0ee4a 1876 || (h != NULL
4e0c91e4
L		 1877 && (! (bfd_link_pie (info)
1878 || SYMBOLIC_BIND (info, h))
12d0ee4a 1879 || h->root.type == bfd_link_hash_defweak
f5385ebf 1880 || !h->def_regular))))
a23b6845 1881 || (ELIMINATE_COPY_RELOCS
0e1862bb 1882 && !bfd_link_pic (info)
12d0ee4a
AM		 1883 && (sec->flags & SEC_ALLOC) != 0
1884 && h != NULL
12d0ee4a 1885 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1886 || !h->def_regular)))
252b5132 1887 {
e03a8ed8
L		 1888 struct elf_dyn_relocs *p;
1889 struct elf_dyn_relocs **head;
ec338859 1890
12d0ee4a
AM		 1891 /* We must copy these reloc types into the output file.
1892 Create a reloc section in dynobj and make room for
1893 this reloc. */
252b5132
RH		 1894 if (sreloc == NULL)
1895 {
0ac8d2ca
AM		 1896 if (htab->elf.dynobj == NULL)
1897 htab->elf.dynobj = abfd;
1898
83bac4b0
NC		 1899 sreloc = _bfd_elf_make_dynamic_reloc_section
1900 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1901
252b5132 1902 if (sreloc == NULL)
c2e61a4e 1903 return FALSE;
252b5132
RH		 1904 }
1905
0c715baa
AM		 1906 /* If this is a global symbol, we count the number of
1907 relocations we need for this symbol. */
1908 if (h != NULL)
252b5132 1909 {
d5597ebc 1910 head = &eh->dyn_relocs;
0c715baa
AM		 1911 }
1912 else
1913 {
ec338859
AM		 1914 /* Track dynamic relocs needed for local syms too.
1915 We really need local syms available to do this
1916 easily. Oh well. */
87d72d41 1917 void **vpp;
ec338859 1918 asection *s;
87d72d41
AM		 1919
1920 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1921 abfd, r_symndx);
1922 if (isym == NULL)
1923 return FALSE;
1924
1925 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1926 if (s == NULL)
87d72d41 1927 s = sec;
ec338859 1928
e81d3500 1929 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1930 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1931 }
1932
1933 p = *head;
1934 if (p == NULL || p->sec != sec)
1935 {
1936 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1937 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1938 amt);
ec338859 1939 if (p == NULL)
c2e61a4e 1940 return FALSE;
ec338859
AM		 1941 p->next = *head;
1942 *head = p;
1943 p->sec = sec;
1944 p->count = 0;
1945 p->pc_count = 0;
252b5132 1946 }
ec338859
AM		 1947
1948 p->count += 1;
06a6a421
L		 1949 /* Count size relocation as PC-relative relocation. */
1950 if (r_type == R_386_PC32 || size_reloc)
ec338859 1951 p->pc_count += 1;
252b5132 1952 }
252b5132
RH		 1953 break;
1954
1955 /* This relocation describes the C++ object vtable hierarchy.
1956 Reconstruct it for later use during GC. */
1957 case R_386_GNU_VTINHERIT:
d17e0c6e 1958 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1959 return FALSE;
252b5132
RH		 1960 break;
1961
1962 /* This relocation describes which C++ vtable entries are actually
1963 used. Record for later use during GC. */
1964 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1965 BFD_ASSERT (h != NULL);
1966 if (h != NULL
1967 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c2e61a4e 1968 return FALSE;
252b5132
RH		 1969 break;
1970
1971 default:
1972 break;
1973 }
dd7e64d4
L		 1974
1975 if (use_plt_got
1976 && h != NULL
1977 && h->plt.refcount > 0
8ded2ddc
L		 1978 && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
1979 || h->got.refcount > 0)
dd7e64d4
L		 1980 && htab->plt_got == NULL)
1981 {
1982 /* Create the GOT procedure linkage table. */
1983 unsigned int plt_got_align;
1984 const struct elf_backend_data *bed;
1985
1986 bed = get_elf_backend_data (info->output_bfd);
1987 BFD_ASSERT (sizeof (elf_i386_got_plt_entry) == 8
1988 && (sizeof (elf_i386_got_plt_entry)
1989 == sizeof (elf_i386_pic_got_plt_entry)));
1990 plt_got_align = 3;
1991
1992 if (htab->elf.dynobj == NULL)
1993 htab->elf.dynobj = abfd;
1994 htab->plt_got
1995 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
1996 ".plt.got",
1997 (bed->dynamic_sec_flags
1998 | SEC_ALLOC
1999 | SEC_CODE
2000 | SEC_LOAD
2001 | SEC_READONLY));
2002 if (htab->plt_got == NULL
2003 || !bfd_set_section_alignment (htab->elf.dynobj,
2004 htab->plt_got,
2005 plt_got_align))
2006 return FALSE;
2007 }
c1d11331 2008
02a86693 2009 if ((r_type == R_386_GOT32 || r_type == R_386_GOT32X)
c1d11331 2010 && (h == NULL || h->type != STT_GNU_IFUNC))
02a86693 2011 sec->need_convert_load = 1;
252b5132
RH		 2012 }
2013
b34976b6 2014 return TRUE;
252b5132
RH		 2015}
2016
2017/* Return the section that should be marked against GC for a given
2018 relocation. */
2019
2020static asection *
55fd94b0 2021elf_i386_gc_mark_hook (asection *sec,
07adf181 2022 struct bfd_link_info *info,
55fd94b0
AM		 2023 Elf_Internal_Rela *rel,
2024 struct elf_link_hash_entry *h,
2025 Elf_Internal_Sym *sym)
252b5132
RH		 2026{
2027 if (h != NULL)
07adf181
AM		 2028 switch (ELF32_R_TYPE (rel->r_info))
2029 {
2030 case R_386_GNU_VTINHERIT:
2031 case R_386_GNU_VTENTRY:
2032 return NULL;
2033 }
2034
2035 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 2036}
2037
2038/* Update the got entry reference counts for the section being removed. */
2039
b34976b6 2040static bfd_boolean
55fd94b0
AM		 2041elf_i386_gc_sweep_hook (bfd *abfd,
2042 struct bfd_link_info *info,
2043 asection *sec,
2044 const Elf_Internal_Rela *relocs)
252b5132 2045{
4dfe6ac6 2046 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 2047 Elf_Internal_Shdr *symtab_hdr;
2048 struct elf_link_hash_entry **sym_hashes;
2049 bfd_signed_vma *local_got_refcounts;
2050 const Elf_Internal_Rela *rel, *relend;
dd5724d5 2051
0e1862bb 2052 if (bfd_link_relocatable (info))
7dda2462
TG		 2053 return TRUE;
2054
4dfe6ac6
NC		 2055 htab = elf_i386_hash_table (info);
2056 if (htab == NULL)
2057 return FALSE;
2058
ec338859 2059 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 2060
0ffa91dd 2061 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 2062 sym_hashes = elf_sym_hashes (abfd);
2063 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 2064
2065 relend = relocs + sec->reloc_count;
2066 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 2067 {
2068 unsigned long r_symndx;
2069 unsigned int r_type;
2070 struct elf_link_hash_entry *h = NULL;
37e55690 2071
26e41594
AM		 2072 r_symndx = ELF32_R_SYM (rel->r_info);
2073 if (r_symndx >= symtab_hdr->sh_info)
2074 {
26e41594 2075 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 2076 while (h->root.type == bfd_link_hash_indirect
2077 || h->root.type == bfd_link_hash_warning)
2078 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 2079 }
bb1cb422
L		 2080 else
2081 {
2082 /* A local symbol. */
2083 Elf_Internal_Sym *isym;
2084
2085 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2086 abfd, r_symndx);
2087
2088 /* Check relocation against local STT_GNU_IFUNC symbol. */
2089 if (isym != NULL
2090 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
2091 {
2092 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
2093 if (h == NULL)
2094 abort ();
2095 }
2096 }
0c715baa 2097
3db2e7dd
L		 2098 if (h)
2099 {
2100 struct elf_i386_link_hash_entry *eh;
2101 struct elf_dyn_relocs **pp;
2102 struct elf_dyn_relocs *p;
2103
2104 eh = (struct elf_i386_link_hash_entry *) h;
2105 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2106 if (p->sec == sec)
2107 {
2108 /* Everything must go for SEC. */
2109 *pp = p->next;
2110 break;
2111 }
2112 }
2113
26e41594 2114 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 2115 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
2116 symtab_hdr, sym_hashes,
2117 &r_type, GOT_UNKNOWN,
23209a78 2118 rel, relend, h, r_symndx))
142411ca
L		 2119 return FALSE;
2120
26e41594
AM		 2121 switch (r_type)
2122 {
2123 case R_386_TLS_LDM:
4dfe6ac6
NC		 2124 if (htab->tls_ldm_got.refcount > 0)
2125 htab->tls_ldm_got.refcount -= 1;
26e41594 2126 break;
0c715baa 2127
26e41594 2128 case R_386_TLS_GD:
67a4f2b7
AO		 2129 case R_386_TLS_GOTDESC:
2130 case R_386_TLS_DESC_CALL:
26e41594
AM		 2131 case R_386_TLS_IE_32:
2132 case R_386_TLS_IE:
2133 case R_386_TLS_GOTIE:
2134 case R_386_GOT32:
02a86693 2135 case R_386_GOT32X:
26e41594
AM		 2136 if (h != NULL)
2137 {
2138 if (h->got.refcount > 0)
2139 h->got.refcount -= 1;
bb1cb422
L		 2140 if (h->type == STT_GNU_IFUNC)
2141 {
2142 if (h->plt.refcount > 0)
2143 h->plt.refcount -= 1;
2144 }
26e41594
AM		 2145 }
2146 else if (local_got_refcounts != NULL)
2147 {
2148 if (local_got_refcounts[r_symndx] > 0)
2149 local_got_refcounts[r_symndx] -= 1;
2150 }
2151 break;
0c715baa 2152
26e41594
AM		 2153 case R_386_32:
2154 case R_386_PC32:
1788fc08 2155 case R_386_SIZE32:
0e1862bb 2156 if (bfd_link_pic (info)
3db2e7dd 2157 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM		 2158 break;
2159 /* Fall through */
6725bdbf 2160
26e41594
AM		 2161 case R_386_PLT32:
2162 if (h != NULL)
2163 {
2164 if (h->plt.refcount > 0)
2165 h->plt.refcount -= 1;
04ebc307
L		 2166 if (r_type == R_386_32
2167 && (sec->flags & SEC_READONLY) == 0)
2168 {
2169 struct elf_i386_link_hash_entry *eh
2170 = (struct elf_i386_link_hash_entry *) h;
2171 if (eh->func_pointer_refcount > 0)
2172 eh->func_pointer_refcount -= 1;
2173 }
26e41594
AM		 2174 }
2175 break;
dd5724d5 2176
bb1cb422
L		 2177 case R_386_GOTOFF:
2178 if (h != NULL && h->type == STT_GNU_IFUNC)
2179 {
2180 if (h->got.refcount > 0)
2181 h->got.refcount -= 1;
2182 if (h->plt.refcount > 0)
2183 h->plt.refcount -= 1;
2184 }
2185 break;
2186
26e41594
AM		 2187 default:
2188 break;
2189 }
2190 }
252b5132 2191
b34976b6 2192 return TRUE;
252b5132
RH		 2193}
2194
aec6b87e
L		 2195/* Remove undefined weak symbol from the dynamic symbol table if it
2196 is resolved to 0. */
2197
2198static bfd_boolean
2199elf_i386_fixup_symbol (struct bfd_link_info *info,
2200 struct elf_link_hash_entry *h)
2201{
2202 if (h->dynindx != -1
2203 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
2204 elf_i386_hash_entry (h)))
2205 {
2206 h->dynindx = -1;
2207 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2208 h->dynstr_index);
2209 }
2210 return TRUE;
2211}
2212
252b5132
RH		 2213/* Adjust a symbol defined by a dynamic object and referenced by a
2214 regular object. The current definition is in some section of the
2215 dynamic object, but we're not including those sections. We have to
2216 change the definition to something the rest of the link can
2217 understand. */
2218
b34976b6 2219static bfd_boolean
55fd94b0
AM		 2220elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2221 struct elf_link_hash_entry *h)
252b5132 2222{
6725bdbf 2223 struct elf_i386_link_hash_table *htab;
252b5132 2224 asection *s;
5ca5bb35
L		 2225 struct elf_i386_link_hash_entry *eh;
2226 struct elf_dyn_relocs *p;
252b5132 2227
cbe950e9
L		 2228 /* STT_GNU_IFUNC symbol must go through PLT. */
2229 if (h->type == STT_GNU_IFUNC)
2230 {
73bcf233
L		 2231 /* All local STT_GNU_IFUNC references must be treate as local
2232 calls via local PLT. */
5ca5bb35
L		 2233 if (h->ref_regular
2234 && SYMBOL_CALLS_LOCAL (info, h))
2235 {
73bcf233 2236 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2237 struct elf_dyn_relocs **pp;
2238
2239 eh = (struct elf_i386_link_hash_entry *) h;
2240 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2241 {
2242 pc_count += p->pc_count;
2243 p->count -= p->pc_count;
2244 p->pc_count = 0;
73bcf233 2245 count += p->count;
5ca5bb35
L		 2246 if (p->count == 0)
2247 *pp = p->next;
2248 else
2249 pp = &p->next;
2250 }
2251
73bcf233 2252 if (pc_count || count)
5ca5bb35
L		 2253 {
2254 h->needs_plt = 1;
5ca5bb35 2255 h->non_got_ref = 1;
a5479e5f
L		 2256 if (h->plt.refcount <= 0)
2257 h->plt.refcount = 1;
2258 else
2259 h->plt.refcount += 1;
5ca5bb35
L		 2260 }
2261 }
2262
cbe950e9
L		 2263 if (h->plt.refcount <= 0)
2264 {
2265 h->plt.offset = (bfd_vma) -1;
2266 h->needs_plt = 0;
2267 }
2268 return TRUE;
2269 }
2270
252b5132
RH		 2271 /* If this is a function, put it in the procedure linkage table. We
2272 will fill in the contents of the procedure linkage table later,
2273 when we know the address of the .got section. */
2274 if (h->type == STT_FUNC
f5385ebf 2275 || h->needs_plt)
252b5132 2276 {
6725bdbf 2277 if (h->plt.refcount <= 0
9c7a29a3
AM		 2278 || SYMBOL_CALLS_LOCAL (info, h)
2279 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2280 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2281 {
2282 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2283 file, but the symbol was never referred to by a dynamic
2284 object, or if all references were garbage collected. In
2285 such a case, we don't actually need to build a procedure
2286 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2287 h->plt.offset = (bfd_vma) -1;
f5385ebf 2288 h->needs_plt = 0;
252b5132
RH		 2289 }
2290
b34976b6 2291 return TRUE;
252b5132 2292 }
6725bdbf
AM		 2293 else
2294 /* It's possible that we incorrectly decided a .plt reloc was
2295 needed for an R_386_PC32 reloc to a non-function sym in
2296 check_relocs. We can't decide accurately between function and
2297 non-function syms in check-relocs; Objects loaded later in
2298 the link may change h->type. So fix it now. */
bbd7ec4a 2299 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2300
2301 /* If this is a weak symbol, and there is a real definition, the
2302 processor independent code will have arranged for us to see the
2303 real definition first, and we can just use the same value. */
f6e332e6 2304 if (h->u.weakdef != NULL)
252b5132 2305 {
f6e332e6
AM		 2306 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2307 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2308 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2309 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2310 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2311 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2312 return TRUE;
252b5132
RH		 2313 }
2314
2315 /* This is a reference to a symbol defined by a dynamic object which
2316 is not a function. */
2317
2318 /* If we are creating a shared library, we must presume that the
2319 only references to the symbol are via the global offset table.
2320 For such cases we need not do anything here; the relocations will
2321 be handled correctly by relocate_section. */
0e1862bb 2322 if (!bfd_link_executable (info))
b34976b6 2323 return TRUE;
252b5132 2324
7843f00e 2325 /* If there are no references to this symbol that do not use the
d5597ebc
L		 2326 GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
2327 reloc. */
2328 eh = (struct elf_i386_link_hash_entry *) h;
2329 if (!h->non_got_ref && !eh->gotoff_ref)
b34976b6 2330 return TRUE;
7843f00e 2331
8bd621d8
AM		 2332 /* If -z nocopyreloc was given, we won't generate them either. */
2333 if (info->nocopyreloc)
2334 {
f5385ebf 2335 h->non_got_ref = 0;
b34976b6 2336 return TRUE;
8bd621d8
AM		 2337 }
2338
643796e3 2339 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2340 if (htab == NULL)
2341 return FALSE;
643796e3 2342
d5597ebc
L		 2343 /* If there aren't any dynamic relocs in read-only sections nor
2344 R_386_GOTOFF relocation, then we can keep the dynamic relocs and
2345 avoid the copy reloc. This doesn't work on VxWorks, where we can
2346 not have dynamic relocations (other than copy and jump slot
2347 relocations) in an executable. */
23209a78 2348 if (ELIMINATE_COPY_RELOCS
d5597ebc 2349 && !eh->gotoff_ref
23209a78 2350 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2351 {
a23b6845
AM		 2352 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2353 {
2354 s = p->sec->output_section;
2355 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2356 break;
2357 }
2358
a23b6845
AM		 2359 if (p == NULL)
2360 {
f5385ebf 2361 h->non_got_ref = 0;
a23b6845
AM		 2362 return TRUE;
2363 }
ebe50bae
AM		 2364 }
2365
252b5132
RH		 2366 /* We must allocate the symbol in our .dynbss section, which will
2367 become part of the .bss section of the executable. There will be
2368 an entry for this symbol in the .dynsym section. The dynamic
2369 object will contain position independent code, so all references
2370 from the dynamic object to this symbol will go through the global
2371 offset table. The dynamic linker will use the .dynsym entry to
2372 determine the address it must put in the global offset table, so
2373 both the dynamic object and the regular object will refer to the
2374 same memory location for the variable. */
2375
252b5132
RH		 2376 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2377 copy the initial value out of the dynamic object and into the
0ac8d2ca 2378 runtime process image. */
1d7e9d18 2379 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2380 {
eea6121a 2381 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2382 h->needs_copy = 1;
252b5132
RH		 2383 }
2384
0ac8d2ca 2385 s = htab->sdynbss;
252b5132 2386
6cabe1ea 2387 return _bfd_elf_adjust_dynamic_copy (info, h, s);
252b5132
RH		 2388}
2389
6725bdbf 2390/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2391 dynamic relocs. */
6725bdbf 2392
b34976b6 2393static bfd_boolean
eb4ff4d6 2394elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2395{
2396 struct bfd_link_info *info;
2397 struct elf_i386_link_hash_table *htab;
5a15f56f 2398 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2399 struct elf_dyn_relocs *p;
25e762b9 2400 unsigned plt_entry_size;
aec6b87e 2401 bfd_boolean resolved_to_zero;
6725bdbf 2402
e92d460e 2403 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2404 return TRUE;
6725bdbf 2405
cbe950e9 2406 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2407
6725bdbf
AM		 2408 info = (struct bfd_link_info *) inf;
2409 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2410 if (htab == NULL)
2411 return FALSE;
6725bdbf 2412
25e762b9
RM		 2413 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2414
aec6b87e
L		 2415 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
2416
04ebc307
L		 2417 /* Clear the reference count of function pointer relocations if
2418 symbol isn't a normal function. */
2419 if (h->type != STT_FUNC)
2420 eh->func_pointer_refcount = 0;
2421
dd7e64d4
L		 2422 /* We can't use the GOT PLT if pointer equality is needed since
2423 finish_dynamic_symbol won't clear symbol value and the dynamic
2424 linker won't update the GOT slot. We will get into an infinite
2425 loop at run-time. */
2426 if (htab->plt_got != NULL
2427 && h->type != STT_GNU_IFUNC
2428 && !h->pointer_equality_needed
2429 && h->plt.refcount > 0
2430 && h->got.refcount > 0)
2431 {
2432 /* Don't use the regular PLT if there are both GOT and GOTPLT
2433 reloctions. */
2434 h->plt.offset = (bfd_vma) -1;
2435
2436 /* Use the GOT PLT. */
2437 eh->plt_got.refcount = 1;
2438 }
2439
cbe950e9
L		 2440 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2441 here if it is defined and referenced in a non-shared object. */
2442 if (h->type == STT_GNU_IFUNC
2443 && h->def_regular)
25e762b9 2444 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
7b70956d
WN		 2445 plt_entry_size,
2446 plt_entry_size, 4);
04ebc307
L		 2447 /* Don't create the PLT entry if there are only function pointer
2448 relocations which can be resolved at run-time. */
cbe950e9 2449 else if (htab->elf.dynamic_sections_created
04ebc307
L		 2450 && (h->plt.refcount > eh->func_pointer_refcount
2451 || eh->plt_got.refcount > 0))
6725bdbf 2452 {
25070364
L		 2453 bfd_boolean use_plt_got;
2454
04ebc307
L		 2455 /* Clear the reference count of function pointer relocations
2456 if PLT is used. */
2457 eh->func_pointer_refcount = 0;
2458
8ded2ddc 2459 if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
25070364
L		 2460 {
2461 /* Don't use the regular PLT for DF_BIND_NOW. */
2462 h->plt.offset = (bfd_vma) -1;
2463
2464 /* Use the GOT PLT. */
2465 h->got.refcount = 1;
2466 eh->plt_got.refcount = 1;
2467 }
2468
2469 use_plt_got = eh->plt_got.refcount > 0;
dd7e64d4 2470
5a15f56f
AM		 2471 /* Make sure this symbol is output as a dynamic symbol.
2472 Undefined weak syms won't yet be marked as dynamic. */
2473 if (h->dynindx == -1
aec6b87e
L		 2474 && !h->forced_local
2475 && !resolved_to_zero)
5a15f56f 2476 {
c152c796 2477 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2478 return FALSE;
5a15f56f
AM		 2479 }
2480
0e1862bb 2481 if (bfd_link_pic (info)
4e795f50 2482 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2483 {
6de2ae4a 2484 asection *s = htab->elf.splt;
dd7e64d4 2485 asection *got_s = htab->plt_got;
6725bdbf 2486
7c1e8d3e
L		 2487 /* If this is the first .plt entry, make room for the special
2488 first entry. The .plt section is used by prelink to undo
2489 prelinking for dynamic relocations. */
2490 if (s->size == 0)
2491 s->size = plt_entry_size;
2492
dd7e64d4
L		 2493 if (use_plt_got)
2494 eh->plt_got.offset = got_s->size;
2495 else
7c1e8d3e 2496 h->plt.offset = s->size;
6725bdbf 2497
ced53ee5
AM		 2498 /* If this symbol is not defined in a regular file, and we are
2499 not generating a shared library, then set the symbol to this
2500 location in the .plt. This is required to make function
2501 pointers compare as equal between the normal executable and
2502 the shared library. */
0e1862bb 2503 if (! bfd_link_pic (info)
f5385ebf 2504 && !h->def_regular)
ced53ee5 2505 {
dd7e64d4
L		 2506 if (use_plt_got)
2507 {
2508 /* We need to make a call to the entry of the GOT PLT
2509 instead of regular PLT entry. */
2510 h->root.u.def.section = got_s;
2511 h->root.u.def.value = eh->plt_got.offset;
2512 }
2513 else
2514 {
2515 h->root.u.def.section = s;
2516 h->root.u.def.value = h->plt.offset;
2517 }
ced53ee5 2518 }
6725bdbf 2519
ced53ee5 2520 /* Make room for this entry. */
dd7e64d4
L		 2521 if (use_plt_got)
2522 got_s->size += sizeof (elf_i386_got_plt_entry);
2523 else
2524 {
2525 s->size += plt_entry_size;
6725bdbf 2526
dd7e64d4
L		 2527 /* We also need to make an entry in the .got.plt section,
2528 which will be placed in the .got section by the linker
2529 script. */
2530 htab->elf.sgotplt->size += 4;
6725bdbf 2531
aec6b87e
L		 2532 /* There should be no PLT relocation against resolved
2533 undefined weak symbol in executable. */
2534 if (!resolved_to_zero)
2535 {
2536 /* We also need to make an entry in the .rel.plt
2537 section. */
2538 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2539 htab->elf.srelplt->reloc_count++;
2540 }
dd7e64d4 2541 }
eac338cf 2542
23209a78 2543 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
0e1862bb 2544 && !bfd_link_pic (info))
eac338cf
PB		 2545 {
2546 /* VxWorks has a second set of relocations for each PLT entry
2547 in executables. They go in a separate relocation section,
2548 which is processed by the kernel loader. */
2549
2550 /* There are two relocations for the initial PLT entry: an
2551 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2552 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2553
25e762b9 2554 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2555 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2556
2557 /* There are two extra relocations for each subsequent PLT entry:
2558 an R_386_32 relocation for the GOT entry, and an R_386_32
2559 relocation for the PLT entry. */
2560
2561 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2562 }
6725bdbf 2563 }
ced53ee5
AM		 2564 else
2565 {
13f42277 2566 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2567 h->plt.offset = (bfd_vma) -1;
f5385ebf 2568 h->needs_plt = 0;
ced53ee5 2569 }
6725bdbf
AM		 2570 }
2571 else
2572 {
13f42277 2573 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2574 h->plt.offset = (bfd_vma) -1;
f5385ebf 2575 h->needs_plt = 0;
6725bdbf
AM		 2576 }
2577
67a4f2b7
AO		 2578 eh->tlsdesc_got = (bfd_vma) -1;
2579
37e55690 2580 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2581 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2582 if (h->got.refcount > 0
0e1862bb 2583 && bfd_link_executable (info)
13ae64f3 2584 && h->dynindx == -1
37e55690 2585 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2586 h->got.offset = (bfd_vma) -1;
13ae64f3 2587 else if (h->got.refcount > 0)
6725bdbf 2588 {
0ac8d2ca 2589 asection *s;
b34976b6 2590 bfd_boolean dyn;
13ae64f3 2591 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2592
5a15f56f
AM		 2593 /* Make sure this symbol is output as a dynamic symbol.
2594 Undefined weak syms won't yet be marked as dynamic. */
2595 if (h->dynindx == -1
aec6b87e
L		 2596 && !h->forced_local
2597 && !resolved_to_zero)
5a15f56f 2598 {
c152c796 2599 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2600 return FALSE;
5a15f56f
AM		 2601 }
2602
6de2ae4a 2603 s = htab->elf.sgot;
67a4f2b7
AO		 2604 if (GOT_TLS_GDESC_P (tls_type))
2605 {
6de2ae4a 2606 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2607 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2608 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2609 h->got.offset = (bfd_vma) -2;
2610 }
2611 if (! GOT_TLS_GDESC_P (tls_type)
2612 || GOT_TLS_GD_P (tls_type))
2613 {
2614 h->got.offset = s->size;
2615 s->size += 4;
2616 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2617 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2618 s->size += 4;
2619 }
ebe50bae 2620 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2621 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2622 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2623 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2624 need two), R_386_TLS_GD needs one if local symbol and two if
aec6b87e
L		 2625 global. No dynamic relocation against resolved undefined weak
2626 symbol in executable. */
37e55690 2627 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2628 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2629 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2630 || (tls_type & GOT_TLS_IE))
6de2ae4a 2631 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2632 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2633 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2634 else if (! GOT_TLS_GDESC_P (tls_type)
aec6b87e
L		 2635 && ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2636 && !resolved_to_zero)
67a4f2b7 2637 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 2638 && (bfd_link_pic (info)
ef5aade5 2639 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2640 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2641 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2642 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2643 }
2644 else
51b64d56 2645 h->got.offset = (bfd_vma) -1;
6725bdbf 2646
5a15f56f 2647 if (eh->dyn_relocs == NULL)
b34976b6 2648 return TRUE;
5a15f56f 2649
0c715baa
AM		 2650 /* In the shared -Bsymbolic case, discard space allocated for
2651 dynamic pc-relative relocs against symbols which turn out to be
2652 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2653 space for pc-relative relocs that have become local due to symbol
2654 visibility changes. */
0c715baa 2655
0e1862bb 2656 if (bfd_link_pic (info))
5a15f56f 2657 {
09695f56
AM		 2658 /* The only reloc that uses pc_count is R_386_PC32, which will
2659 appear on a call or on something like ".long foo - .". We
2660 want calls to protected symbols to resolve directly to the
2661 function rather than going via the plt. If people want
2662 function pointer comparisons to work as expected then they
2663 should avoid writing assembly like ".long foo - .". */
2664 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2665 {
e03a8ed8 2666 struct elf_dyn_relocs **pp;
0c715baa
AM		 2667
2668 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2669 {
c3ce498c
L		 2670 p->count -= p->pc_count;
2671 p->pc_count = 0;
0c715baa
AM		 2672 if (p->count == 0)
2673 *pp = p->next;
2674 else
2675 pp = &p->next;
2676 }
5a15f56f 2677 }
4e795f50 2678
23209a78 2679 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2680 {
e03a8ed8 2681 struct elf_dyn_relocs **pp;
3348747a
NS		 2682 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2683 {
2684 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2685 *pp = p->next;
2686 else
2687 pp = &p->next;
2688 }
2689 }
2690
4e795f50 2691 /* Also discard relocs on undefined weak syms with non-default
aec6b87e 2692 visibility or in PIE. */
22d606e9 2693 if (eh->dyn_relocs != NULL
c353e543 2694 && h->root.type == bfd_link_hash_undefweak)
22d606e9 2695 {
aec6b87e
L		 2696 /* Undefined weak symbol is never bound locally in shared
2697 library. */
2698 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2699 || resolved_to_zero)
2700 {
2701 if (h->non_got_ref)
2702 {
2703 /* Keep dynamic non-GOT/non-PLT relocation so that we
2704 can branch to 0 without PLT. */
2705 struct elf_dyn_relocs **pp;
2706
2707 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2708 if (p->pc_count == 0)
2709 *pp = p->next;
2710 else
2711 {
2712 /* Remove non-R_386_PC32 relocation. */
2713 p->count = p->pc_count;
2714 pp = &p->next;
2715 }
22d606e9 2716
aec6b87e
L		 2717 if (eh->dyn_relocs != NULL)
2718 {
2719 /* Make sure undefined weak symbols are output
2720 as dynamic symbols in PIEs for dynamic non-GOT
2721 non-PLT reloations. */
2722 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2723 return FALSE;
2724 }
2725 }
2726 else
2727 eh->dyn_relocs = NULL;
2728 }
22d606e9
AM		 2729 else if (h->dynindx == -1
2730 && !h->forced_local)
2731 {
2732 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2733 return FALSE;
2734 }
2735 }
0c715baa 2736 }
a23b6845 2737 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2738 {
2739 /* For the non-shared case, discard space for relocs against
2740 symbols which turn out to need copy relocs or are not
04ebc307
L		 2741 dynamic. Keep dynamic relocations for run-time function
2742 pointer initialization. */
0c715baa 2743
aec6b87e
L		 2744 if ((!h->non_got_ref
2745 || eh->func_pointer_refcount > 0
2746 || (h->root.type == bfd_link_hash_undefweak
2747 && !resolved_to_zero))
f5385ebf
AM		 2748 && ((h->def_dynamic
2749 && !h->def_regular)
ebe50bae 2750 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2751 && (h->root.type == bfd_link_hash_undefweak
2752 || h->root.type == bfd_link_hash_undefined))))
2753 {
2754 /* Make sure this symbol is output as a dynamic symbol.
2755 Undefined weak syms won't yet be marked as dynamic. */
2756 if (h->dynindx == -1
aec6b87e
L		 2757 && !h->forced_local
2758 && !resolved_to_zero)
0c715baa 2759 {
c152c796 2760 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2761 return FALSE;
0c715baa 2762 }
5a15f56f 2763
0c715baa
AM		 2764 /* If that succeeded, we know we'll be keeping all the
2765 relocs. */
2766 if (h->dynindx != -1)
2767 goto keep;
2768 }
2769
2770 eh->dyn_relocs = NULL;
04ebc307 2771 eh->func_pointer_refcount = 0;
0c715baa 2772
ec338859 2773 keep: ;
5a15f56f
AM		 2774 }
2775
0c715baa
AM		 2776 /* Finally, allocate space. */
2777 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2778 {
e7c33416
NC		 2779 asection *sreloc;
2780
cbe950e9 2781 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2782
2783 BFD_ASSERT (sreloc != NULL);
eea6121a 2784 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2785 }
2786
b34976b6 2787 return TRUE;
6725bdbf
AM		 2788}
2789
c25bc9fc
L		 2790/* Allocate space in .plt, .got and associated reloc sections for
2791 local dynamic relocs. */
2792
2793static bfd_boolean
2794elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2795{
2796 struct elf_link_hash_entry *h
2797 = (struct elf_link_hash_entry *) *slot;
2798
2799 if (h->type != STT_GNU_IFUNC
2800 || !h->def_regular
2801 || !h->ref_regular
2802 || !h->forced_local
2803 || h->root.type != bfd_link_hash_defined)
2804 abort ();
2805
2806 return elf_i386_allocate_dynrelocs (h, inf);
2807}
2808
0c715baa
AM		 2809/* Find any dynamic relocs that apply to read-only sections. */
2810
b34976b6 2811static bfd_boolean
eb4ff4d6 2812elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2813{
2814 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2815 struct elf_dyn_relocs *p;
0c715baa 2816
aa715242
L		 2817 /* Skip local IFUNC symbols. */
2818 if (h->forced_local && h->type == STT_GNU_IFUNC)
2819 return TRUE;
2820
0c715baa
AM		 2821 eh = (struct elf_i386_link_hash_entry *) h;
2822 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2823 {
2824 asection *s = p->sec->output_section;
2825
2826 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2827 {
2828 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2829
2830 info->flags |= DF_TEXTREL;
2831
0e1862bb 2832 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 2833 || info->error_textrel)
2834 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L		 2835 p->sec->owner, h->root.root.string,
2836 p->sec);
2837
0c715baa 2838 /* Not an error, just cut short the traversal. */
b34976b6 2839 return FALSE;
0c715baa
AM		 2840 }
2841 }
b34976b6 2842 return TRUE;
0c715baa
AM		 2843}
2844
02a86693
L		 2845/* With the local symbol, foo, we convert
2846 mov foo@GOT[(%reg1)], %reg2
2847 to
2848 lea foo[@GOTOFF(%reg1)], %reg2
2849 and convert
2850 call/jmp *foo@GOT[(%reg)]
daa67607 2851 to
02a86693
L		 2852 nop call foo/jmp foo nop
2853 When PIC is false, convert
2854 test %reg1, foo@GOT[(%reg2)]
2855 to
2856 test $foo, %reg1
2857 and convert
2858 binop foo@GOT[(%reg1)], %reg2
2859 to
2860 binop $foo, %reg2
2861 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
2862 instructions. */
daa67607
L		 2863
2864static bfd_boolean
02a86693 2865elf_i386_convert_load (bfd *abfd, asection *sec,
a6af384b 2866 struct bfd_link_info *link_info)
daa67607
L		 2867{
2868 Elf_Internal_Shdr *symtab_hdr;
2869 Elf_Internal_Rela *internal_relocs;
2870 Elf_Internal_Rela *irel, *irelend;
2871 bfd_byte *contents;
2872 struct elf_i386_link_hash_table *htab;
2873 bfd_boolean changed_contents;
2874 bfd_boolean changed_relocs;
bae420ef 2875 bfd_boolean is_pic;
daa67607
L		 2876 bfd_signed_vma *local_got_refcounts;
2877
2878 /* Don't even try to convert non-ELF outputs. */
2879 if (!is_elf_hash_table (link_info->hash))
2880 return FALSE;
2881
c1d11331 2882 /* Nothing to do if there is no need or no output. */
daa67607 2883 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
02a86693 2884 || sec->need_convert_load == 0
c8831961 2885 || bfd_is_abs_section (sec->output_section))
daa67607
L		 2886 return TRUE;
2887
2888 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2889
2890 /* Load the relocations for this section. */
2891 internal_relocs = (_bfd_elf_link_read_relocs
2892 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2893 link_info->keep_memory));
2894 if (internal_relocs == NULL)
2895 return FALSE;
2896
2897 htab = elf_i386_hash_table (link_info);
2898 changed_contents = FALSE;
2899 changed_relocs = FALSE;
2900 local_got_refcounts = elf_local_got_refcounts (abfd);
2901
bae420ef
L		 2902 is_pic = bfd_link_pic (link_info);
2903
daa67607
L		 2904 /* Get the section contents. */
2905 if (elf_section_data (sec)->this_hdr.contents != NULL)
2906 contents = elf_section_data (sec)->this_hdr.contents;
2907 else
2908 {
2909 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2910 goto error_return;
2911 }
2912
2913 irelend = internal_relocs + sec->reloc_count;
2914 for (irel = internal_relocs; irel < irelend; irel++)
2915 {
2916 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2917 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2918 unsigned int indx;
2919 struct elf_link_hash_entry *h;
02a86693
L		 2920 unsigned int opcode;
2921 unsigned int modrm;
2922 bfd_vma roff;
2923 bfd_boolean baseless;
2924 Elf_Internal_Sym *isym;
2925 unsigned int addend;
2926 unsigned int nop;
2927 bfd_vma nop_offset;
bae420ef 2928 bfd_boolean to_reloc_32;
daa67607 2929
02a86693 2930 if (r_type != R_386_GOT32 && r_type != R_386_GOT32X)
daa67607
L		 2931 continue;
2932
02a86693
L		 2933 roff = irel->r_offset;
2934 if (roff < 2)
2935 continue;
2936
02e2aef8
L		 2937 /* Addend for R_386_GOT32 and R_386_GOT32X relocations must be 0. */
2938 addend = bfd_get_32 (abfd, contents + roff);
2939 if (addend != 0)
2940 continue;
2941
02a86693
L		 2942 modrm = bfd_get_8 (abfd, contents + roff - 1);
2943 baseless = (modrm & 0xc7) == 0x5;
2944
bae420ef 2945 if (r_type == R_386_GOT32X && baseless && is_pic)
daa67607 2946 {
02a86693
L		 2947 /* For PIC, disallow R_386_GOT32X without a base register
2948 since we don't know what the GOT base is. Allow
2949 R_386_GOT32 for existing object files. */
2950 const char *name;
2951
2952 if (r_symndx < symtab_hdr->sh_info)
2953 {
2954 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd,
2955 r_symndx);
2956 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
2957 }
2958 else
2959 {
2960 indx = r_symndx - symtab_hdr->sh_info;
2961 h = elf_sym_hashes (abfd)[indx];
2962 BFD_ASSERT (h != NULL);
2963 name = h->root.root.string;
2964 }
2965
2966 (*_bfd_error_handler)
2967 (_("%B: direct GOT relocation R_386_GOT32X against `%s' without base register can not be used when making a shared object"),
2968 abfd, name);
2969 goto error_return;
2970 }
daa67607 2971
02a86693
L		 2972 opcode = bfd_get_8 (abfd, contents + roff - 2);
2973
bae420ef 2974 /* Convert mov to lea since it has been done for a while. */
02a86693
L		 2975 if (opcode != 0x8b)
2976 {
2977 /* Only convert R_386_GOT32X relocation for call, jmp or
2978 one of adc, add, and, cmp, or, sbb, sub, test, xor
2979 instructions. */
2980 if (r_type != R_386_GOT32X)
2981 continue;
02a86693
L		 2982 }
2983
bae420ef
L		 2984 /* Convert to R_386_32 if PIC is false or there is no base
2985 register. */
2986 to_reloc_32 = !is_pic || baseless;
2987
02a86693
L		 2988 /* Try to convert R_386_GOT32 and R_386_GOT32X. Get the symbol
2989 referred to by the reloc. */
2990 if (r_symndx < symtab_hdr->sh_info)
2991 {
daa67607
L		 2992 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2993 abfd, r_symndx);
2994
02a86693
L		 2995 /* STT_GNU_IFUNC must keep GOT32 relocations. */
2996 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
2997 continue;
2998
2999 h = NULL;
3000 if (opcode == 0x0ff)
3001 /* Convert "call/jmp *foo@GOT[(%reg)]". */
3002 goto convert_branch;
3003 else
3004 /* Convert "mov foo@GOT[(%reg1)], %reg2",
3005 "test %reg1, foo@GOT(%reg2)" and
3006 "binop foo@GOT[(%reg1)], %reg2". */
3007 goto convert_load;
daa67607
L		 3008 }
3009
3010 indx = r_symndx - symtab_hdr->sh_info;
3011 h = elf_sym_hashes (abfd)[indx];
3012 BFD_ASSERT (h != NULL);
3013
3014 while (h->root.type == bfd_link_hash_indirect
3015 || h->root.type == bfd_link_hash_warning)
3016 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3017
02a86693
L		 3018 /* STT_GNU_IFUNC must keep GOT32 relocations. */
3019 if (h->type == STT_GNU_IFUNC)
3020 continue;
3021
bae420ef
L		 3022 /* Undefined weak symbol is only bound locally in executable
3023 and its reference is resolved as 0. */
3024 if (UNDEFINED_WEAK_RESOLVED_TO_ZERO (link_info,
3025 elf_i386_hash_entry (h)))
3026 {
3027 if (opcode == 0xff)
3028 {
3029 /* No direct branch to 0 for PIC. */
3030 if (is_pic)
3031 continue;
3032 else
3033 goto convert_branch;
3034 }
3035 else
3036 {
3037 /* We can convert load of address 0 to R_386_32. */
3038 to_reloc_32 = TRUE;
3039 goto convert_load;
3040 }
3041 }
3042
02a86693
L		 3043 if (opcode == 0xff)
3044 {
3045 /* We have "call/jmp *foo@GOT[(%reg)]". */
3046 if ((h->root.type == bfd_link_hash_defined
3047 || h->root.type == bfd_link_hash_defweak)
3048 && SYMBOL_REFERENCES_LOCAL (link_info, h))
3049 {
3050 /* The function is locally defined. */
3051convert_branch:
02a86693
L		 3052 /* Convert R_386_GOT32X to R_386_PC32. */
3053 if (modrm == 0x15 || (modrm & 0xf8) == 0x90)
3054 {
3055 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
3056 is a nop prefix. */
3057 modrm = 0xe8;
caa65211
L		 3058 nop = link_info->call_nop_byte;
3059 if (link_info->call_nop_as_suffix)
3060 {
3061 nop_offset = roff + 3;
3062 irel->r_offset -= 1;
3063 }
3064 else
3065 nop_offset = roff - 2;
02a86693
L		 3066 }
3067 else
3068 {
3069 /* Convert to "jmp foo nop". */
3070 modrm = 0xe9;
3071 nop = NOP_OPCODE;
3072 nop_offset = roff + 3;
3073 irel->r_offset -= 1;
3074 }
3075
3076 bfd_put_8 (abfd, nop, contents + nop_offset);
3077 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
3078 /* When converting to PC-relative relocation, we
3079 need to adjust addend by -4. */
3080 bfd_put_32 (abfd, -4, contents + irel->r_offset);
3081 irel->r_info = ELF32_R_INFO (r_symndx, R_386_PC32);
3082
3083 if (h)
3084 {
3085 if (h->got.refcount > 0)
3086 h->got.refcount -= 1;
3087 }
3088 else
3089 {
3090 if (local_got_refcounts != NULL
3091 && local_got_refcounts[r_symndx] > 0)
3092 local_got_refcounts[r_symndx] -= 1;
3093 }
3094
3095 changed_contents = TRUE;
3096 changed_relocs = TRUE;
3097 }
3098 }
3099 else
daa67607 3100 {
02a86693
L		 3101 /* We have "mov foo@GOT[(%re1g)], %reg2",
3102 "test %reg1, foo@GOT(%reg2)" and
3103 "binop foo@GOT[(%reg1)], %reg2".
3104
3105 Avoid optimizing _DYNAMIC since ld.so may use its
3106 link-time address. */
3107 if (h == htab->elf.hdynamic)
3108 continue;
3109
ead3d542
L		 3110 /* def_regular is set by an assignment in a linker script in
3111 bfd_elf_record_link_assignment. */
3112 if ((h->def_regular
3113 || h->root.type == bfd_link_hash_defined
3114 || h->root.type == bfd_link_hash_defweak)
02a86693
L		 3115 && SYMBOL_REFERENCES_LOCAL (link_info, h))
3116 {
3117convert_load:
3118 if (opcode == 0x8b)
3119 {
bae420ef 3120 if (to_reloc_32)
02a86693 3121 {
bae420ef
L		 3122 /* Convert "mov foo@GOT[(%reg1)], %reg2" to
3123 "mov $foo, %reg2" with R_386_32. */
02a86693 3124 r_type = R_386_32;
bae420ef
L		 3125 modrm = 0xc0 | (modrm & 0x38) >> 3;
3126 bfd_put_8 (abfd, modrm, contents + roff - 1);
3127 opcode = 0xc7;
02a86693
L		 3128 }
3129 else
bae420ef
L		 3130 {
3131 /* Convert "mov foo@GOT(%reg1), %reg2" to
3132 "lea foo@GOTOFF(%reg1), %reg2". */
3133 r_type = R_386_GOTOFF;
3134 opcode = 0x8d;
3135 }
02a86693
L		 3136 }
3137 else
3138 {
bae420ef
L		 3139 /* Only R_386_32 is supported. */
3140 if (!to_reloc_32)
3141 continue;
3142
02a86693
L		 3143 if (opcode == 0x85)
3144 {
3145 /* Convert "test %reg1, foo@GOT(%reg2)" to
3146 "test $foo, %reg1". */
3147 modrm = 0xc0 | (modrm & 0x38) >> 3;
3148 opcode = 0xf7;
3149 }
3150 else
3151 {
3152 /* Convert "binop foo@GOT(%reg1), %reg2" to
3153 "binop $foo, %reg2". */
3154 modrm = (0xc0
3155 | (modrm & 0x38) >> 3
3156 | (opcode & 0x3c));
3157 opcode = 0x81;
3158 }
3159 bfd_put_8 (abfd, modrm, contents + roff - 1);
3160 r_type = R_386_32;
3161 }
3162
3163 bfd_put_8 (abfd, opcode, contents + roff - 2);
3164 irel->r_info = ELF32_R_INFO (r_symndx, r_type);
3165
3166 if (h)
3167 {
3168 if (h->got.refcount > 0)
3169 h->got.refcount -= 1;
3170 }
3171 else
3172 {
3173 if (local_got_refcounts != NULL
3174 && local_got_refcounts[r_symndx] > 0)
3175 local_got_refcounts[r_symndx] -= 1;
3176 }
3177
3178 changed_contents = TRUE;
3179 changed_relocs = TRUE;
3180 }
daa67607
L		 3181 }
3182 }
3183
3184 if (contents != NULL
3185 && elf_section_data (sec)->this_hdr.contents != contents)
3186 {
3187 if (!changed_contents && !link_info->keep_memory)
3188 free (contents);
3189 else
3190 {
3191 /* Cache the section contents for elf_link_input_bfd. */
3192 elf_section_data (sec)->this_hdr.contents = contents;
3193 }
3194 }
3195
3196 if (elf_section_data (sec)->relocs != internal_relocs)
3197 {
3198 if (!changed_relocs)
3199 free (internal_relocs);
3200 else
3201 elf_section_data (sec)->relocs = internal_relocs;
3202 }
3203
3204 return TRUE;
3205
3206 error_return:
3207 if (contents != NULL
3208 && elf_section_data (sec)->this_hdr.contents != contents)
3209 free (contents);
3210 if (internal_relocs != NULL
3211 && elf_section_data (sec)->relocs != internal_relocs)
3212 free (internal_relocs);
3213 return FALSE;
3214}
3215
252b5132
RH		 3216/* Set the sizes of the dynamic sections. */
3217
b34976b6 3218static bfd_boolean
23209a78 3219elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 3220{
6725bdbf 3221 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3222 bfd *dynobj;
3223 asection *s;
b34976b6 3224 bfd_boolean relocs;
0c715baa 3225 bfd *ibfd;
252b5132 3226
6725bdbf 3227 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3228 if (htab == NULL)
3229 return FALSE;
ebe50bae 3230 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 3231 if (dynobj == NULL)
3232 abort ();
252b5132 3233
ebe50bae 3234 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3235 {
3236 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 3237 if (bfd_link_executable (info) && !info->nointerp)
252b5132 3238 {
3d4d4302 3239 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 3240 if (s == NULL)
3241 abort ();
eea6121a 3242 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132 3243 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
aec6b87e 3244 htab->interp = s;
252b5132 3245 }
161d71a6 3246 }
6725bdbf 3247
0c715baa
AM		 3248 /* Set up .got offsets for local syms, and space for local dynamic
3249 relocs. */
c72f2fb2 3250 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
161d71a6
L		 3251 {
3252 bfd_signed_vma *local_got;
3253 bfd_signed_vma *end_local_got;
13ae64f3 3254 char *local_tls_type;
67a4f2b7 3255 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 3256 bfd_size_type locsymcount;
3257 Elf_Internal_Shdr *symtab_hdr;
3258 asection *srel;
6725bdbf 3259
0ffa91dd 3260 if (! is_i386_elf (ibfd))
161d71a6 3261 continue;
6725bdbf 3262
0c715baa
AM		 3263 for (s = ibfd->sections; s != NULL; s = s->next)
3264 {
e03a8ed8 3265 struct elf_dyn_relocs *p;
0c715baa 3266
02a86693 3267 if (!elf_i386_convert_load (ibfd, s, info))
daa67607
L		 3268 return FALSE;
3269
e03a8ed8 3270 for (p = ((struct elf_dyn_relocs *)
e81d3500 3271 elf_section_data (s)->local_dynrel);
ec338859
AM		 3272 p != NULL;
3273 p = p->next)
0c715baa 3274 {
ec338859
AM		 3275 if (!bfd_is_abs_section (p->sec)
3276 && bfd_is_abs_section (p->sec->output_section))
3277 {
3278 /* Input section has been discarded, either because
3279 it is a copy of a linkonce section or due to
3280 linker script /DISCARD/, so we'll be discarding
3281 the relocs too. */
3282 }
23209a78 3283 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 3284 && strcmp (p->sec->output_section->name,
3285 ".tls_vars") == 0)
3286 {
3287 /* Relocations in vxworks .tls_vars sections are
3288 handled specially by the loader. */
3289 }
248866a8 3290 else if (p->count != 0)
ec338859
AM		 3291 {
3292 srel = elf_section_data (p->sec)->sreloc;
eea6121a 3293 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 3294 if ((p->sec->output_section->flags & SEC_READONLY) != 0
3295 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 3296 {
3297 info->flags |= DF_TEXTREL;
0e1862bb 3298 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 3299 || info->error_textrel)
3300 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 3301 p->sec->owner, p->sec);
b70321a2 3302 }
ec338859 3303 }
0c715baa
AM		 3304 }
3305 }
3306
3307 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 3308 if (!local_got)
3309 continue;
6725bdbf 3310
0ffa91dd 3311 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 3312 locsymcount = symtab_hdr->sh_info;
3313 end_local_got = local_got + locsymcount;
13ae64f3 3314 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 3315 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 3316 s = htab->elf.sgot;
3317 srel = htab->elf.srelgot;
67a4f2b7
AO		 3318 for (; local_got < end_local_got;
3319 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 3320 {
67a4f2b7 3321 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 3322 if (*local_got > 0)
6725bdbf 3323 {
67a4f2b7
AO		 3324 if (GOT_TLS_GDESC_P (*local_tls_type))
3325 {
6de2ae4a 3326 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 3327 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 3328 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 3329 *local_got = (bfd_vma) -2;
3330 }
3331 if (! GOT_TLS_GDESC_P (*local_tls_type)
3332 || GOT_TLS_GD_P (*local_tls_type))
3333 {
3334 *local_got = s->size;
3335 s->size += 4;
3336 if (GOT_TLS_GD_P (*local_tls_type)
3337 || *local_tls_type == GOT_TLS_IE_BOTH)
3338 s->size += 4;
3339 }
0e1862bb 3340 if (bfd_link_pic (info)
67a4f2b7 3341 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 3342 || (*local_tls_type & GOT_TLS_IE))
3343 {
3344 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 3345 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 3346 else if (GOT_TLS_GD_P (*local_tls_type)
3347 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 3348 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 3349 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 3350 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 3351 }
6725bdbf 3352 }
161d71a6
L		 3353 else
3354 *local_got = (bfd_vma) -1;
6725bdbf 3355 }
252b5132 3356 }
6725bdbf 3357
13ae64f3
JJ		 3358 if (htab->tls_ldm_got.refcount > 0)
3359 {
3360 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
3361 relocs. */
6de2ae4a
L		 3362 htab->tls_ldm_got.offset = htab->elf.sgot->size;
3363 htab->elf.sgot->size += 8;
3364 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 3365 }
3366 else
3367 htab->tls_ldm_got.offset = -1;
3368
0c715baa
AM		 3369 /* Allocate global sym .plt and .got entries, and space for global
3370 sym dynamic relocs. */
eb4ff4d6 3371 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 3372
c25bc9fc
L		 3373 /* Allocate .plt and .got entries, and space for local symbols. */
3374 htab_traverse (htab->loc_hash_table,
3375 elf_i386_allocate_local_dynrelocs,
3376 info);
3377
67a4f2b7
AO		 3378 /* For every jump slot reserved in the sgotplt, reloc_count is
3379 incremented. However, when we reserve space for TLS descriptors,
3380 it's not incremented, so in order to compute the space reserved
3381 for them, it suffices to multiply the reloc count by the jump
e1f98742 3382 slot size.
caa0075c 3383
e1f98742
L		 3384 PR ld/13302: We start next_irelative_index at the end of .rela.plt
3385 so that R_386_IRELATIVE entries come last. */
6de2ae4a 3386 if (htab->elf.srelplt)
e1f98742
L		 3387 {
3388 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
3389 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
3390 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
3391 }
3392 else if (htab->elf.irelplt)
3393 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
3394
67a4f2b7 3395
a7b16ceb
L		 3396 if (htab->elf.sgotplt)
3397 {
3398 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 3399 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 3400 if ((htab->elf.hgot == NULL
3401 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 3402 && (htab->elf.sgotplt->size
3403 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 3404 && (htab->elf.splt == NULL
3405 || htab->elf.splt->size == 0)
3406 && (htab->elf.sgot == NULL
3407 || htab->elf.sgot->size == 0)
3408 && (htab->elf.iplt == NULL
3409 || htab->elf.iplt->size == 0)
3410 && (htab->elf.igotplt == NULL
3411 || htab->elf.igotplt->size == 0))
3412 htab->elf.sgotplt->size = 0;
3413 }
3414
9a2a56cc
AM		 3415
3416 if (htab->plt_eh_frame != NULL
3417 && htab->elf.splt != NULL
3418 && htab->elf.splt->size != 0
3419 && !bfd_is_abs_section (htab->elf.splt->output_section)
3420 && _bfd_elf_eh_frame_present (info))
3421 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
3422
5a15f56f
AM		 3423 /* We now have determined the sizes of the various dynamic sections.
3424 Allocate memory for them. */
b34976b6 3425 relocs = FALSE;
252b5132
RH		 3426 for (s = dynobj->sections; s != NULL; s = s->next)
3427 {
eac338cf
PB		 3428 bfd_boolean strip_section = TRUE;
3429
252b5132
RH		 3430 if ((s->flags & SEC_LINKER_CREATED) == 0)
3431 continue;
3432
6de2ae4a 3433 if (s == htab->elf.splt
9a2a56cc 3434 || s == htab->elf.sgot)
252b5132 3435 {
6725bdbf
AM		 3436 /* Strip this section if we don't need it; see the
3437 comment below. */
eac338cf
PB		 3438 /* We'd like to strip these sections if they aren't needed, but if
3439 we've exported dynamic symbols from them we must leave them.
3440 It's too late to tell BFD to get rid of the symbols. */
3441
7325306f 3442 if (htab->elf.hplt != NULL)
eac338cf 3443 strip_section = FALSE;
252b5132 3444 }
9a2a56cc
AM		 3445 else if (s == htab->elf.sgotplt
3446 || s == htab->elf.iplt
3447 || s == htab->elf.igotplt
dd7e64d4 3448 || s == htab->plt_got
9a2a56cc
AM		 3449 || s == htab->plt_eh_frame
3450 || s == htab->sdynbss)
3451 {
3452 /* Strip these too. */
3453 }
0112cd26 3454 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 3455 {
6de2ae4a
L		 3456 if (s->size != 0
3457 && s != htab->elf.srelplt
3458 && s != htab->srelplt2)
b34976b6 3459 relocs = TRUE;
252b5132 3460
0ac8d2ca
AM		 3461 /* We use the reloc_count field as a counter if we need
3462 to copy relocs into the output file. */
5ae0bfb6 3463 s->reloc_count = 0;
252b5132 3464 }
6725bdbf 3465 else
252b5132
RH		 3466 {
3467 /* It's not one of our sections, so don't allocate space. */
3468 continue;
3469 }
3470
c456f082 3471 if (s->size == 0)
252b5132 3472 {
0ac8d2ca
AM		 3473 /* If we don't need this section, strip it from the
3474 output file. This is mostly to handle .rel.bss and
3475 .rel.plt. We must create both sections in
3476 create_dynamic_sections, because they must be created
3477 before the linker maps input sections to output
3478 sections. The linker does that before
3479 adjust_dynamic_symbol is called, and it is that
3480 function which decides whether anything needs to go
3481 into these sections. */
c456f082
AM		 3482 if (strip_section)
3483 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3484 continue;
3485 }
3486
c456f082
AM		 3487 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3488 continue;
3489
f69da49f
AM		 3490 /* Allocate memory for the section contents. We use bfd_zalloc
3491 here in case unused entries are not reclaimed before the
3492 section's contents are written out. This should not happen,
3493 but this way if it does, we get a R_386_NONE reloc instead
3494 of garbage. */
a50b1753 3495 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 3496 if (s->contents == NULL)
b34976b6 3497 return FALSE;
252b5132
RH		 3498 }
3499
e41b3a13 3500 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3501 && htab->plt_eh_frame->contents != NULL)
3502 {
3503 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
3504 sizeof (elf_i386_eh_frame_plt));
3505 bfd_put_32 (dynobj, htab->elf.splt->size,
3506 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3507 }
e41b3a13 3508
ebe50bae 3509 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3510 {
3511 /* Add some entries to the .dynamic section. We fill in the
3512 values later, in elf_i386_finish_dynamic_sections, but we
3513 must add the entries now so that we get the correct size for
3514 the .dynamic section. The DT_DEBUG entry is filled in by the
3515 dynamic linker and used by the debugger. */
dc810e39 3516#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3517 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3518
0e1862bb 3519 if (bfd_link_executable (info))
252b5132 3520 {
dc810e39 3521 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3522 return FALSE;
252b5132
RH		 3523 }
3524
6de2ae4a 3525 if (htab->elf.splt->size != 0)
252b5132 3526 {
7c1e8d3e
L		 3527 /* DT_PLTGOT is used by prelink even if there is no PLT
3528 relocation. */
3529 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 3530 return FALSE;
7c1e8d3e
L		 3531
3532 if (htab->elf.srelplt->size != 0)
3533 {
3534 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3535 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3536 || !add_dynamic_entry (DT_JMPREL, 0))
3537 return FALSE;
3538 }
252b5132
RH		 3539 }
3540
3541 if (relocs)
3542 {
dc810e39
AM		 3543 if (!add_dynamic_entry (DT_REL, 0)
3544 || !add_dynamic_entry (DT_RELSZ, 0)
3545 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3546 return FALSE;
252b5132 3547
0c715baa
AM		 3548 /* If any dynamic relocs apply to a read-only section,
3549 then we need a DT_TEXTREL entry. */
248866a8 3550 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3551 elf_link_hash_traverse (&htab->elf,
3552 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3553
3554 if ((info->flags & DF_TEXTREL) != 0)
3555 {
8efa2874
L		 3556 if ((elf_tdata (output_bfd)->has_gnu_symbols
3557 & elf_gnu_symbol_ifunc) == elf_gnu_symbol_ifunc)
3558 {
3559 info->callbacks->einfo
3560 (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
3561 bfd_set_error (bfd_error_bad_value);
3562 return FALSE;
3563 }
3564
0c715baa 3565 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3566 return FALSE;
0c715baa 3567 }
252b5132 3568 }
23209a78 3569 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3570 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3571 return FALSE;
252b5132 3572 }
dc810e39 3573#undef add_dynamic_entry
252b5132 3574
b34976b6 3575 return TRUE;
252b5132
RH		 3576}
3577
67a4f2b7
AO		 3578static bfd_boolean
3579elf_i386_always_size_sections (bfd *output_bfd,
3580 struct bfd_link_info *info)
3581{
3582 asection *tls_sec = elf_hash_table (info)->tls_sec;
3583
3584 if (tls_sec)
3585 {
3586 struct elf_link_hash_entry *tlsbase;
3587
3588 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3589 "_TLS_MODULE_BASE_",
3590 FALSE, FALSE, FALSE);
3591
3592 if (tlsbase && tlsbase->type == STT_TLS)
3593 {
4dfe6ac6 3594 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3595 struct bfd_link_hash_entry *bh = NULL;
3596 const struct elf_backend_data *bed
3597 = get_elf_backend_data (output_bfd);
3598
4dfe6ac6
NC		 3599 htab = elf_i386_hash_table (info);
3600 if (htab == NULL)
3601 return FALSE;
3602
67a4f2b7
AO		 3603 if (!(_bfd_generic_link_add_one_symbol
3604 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3605 tls_sec, 0, NULL, FALSE,
3606 bed->collect, &bh)))
3607 return FALSE;
9f03412a 3608
4dfe6ac6 3609 htab->tls_module_base = bh;
9f03412a 3610
67a4f2b7
AO		 3611 tlsbase = (struct elf_link_hash_entry *)bh;
3612 tlsbase->def_regular = 1;
3613 tlsbase->other = STV_HIDDEN;
576fa883 3614 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3615 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3616 }
3617 }
3618
3619 return TRUE;
3620}
3621
38701953
AM		 3622/* Set the correct type for an x86 ELF section. We do this by the
3623 section name, which is a hack, but ought to work. */
3624
b34976b6 3625static bfd_boolean
55fd94b0
AM		 3626elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3627 Elf_Internal_Shdr *hdr,
3628 asection *sec)
38701953 3629{
91d6fa6a 3630 const char *name;
38701953
AM		 3631
3632 name = bfd_get_section_name (abfd, sec);
3633
3634 /* This is an ugly, but unfortunately necessary hack that is
3635 needed when producing EFI binaries on x86. It tells
3636 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3637 containing ELF relocation info. We need this hack in order to
3638 be able to generate ELF binaries that can be translated into
3639 EFI applications (which are essentially COFF objects). Those
3640 files contain a COFF ".reloc" section inside an ELFNN object,
3641 which would normally cause BFD to segfault because it would
3642 attempt to interpret this section as containing relocation
3643 entries for section "oc". With this hack enabled, ".reloc"
3644 will be treated as a normal data section, which will avoid the
3645 segfault. However, you won't be able to create an ELFNN binary
3646 with a section named "oc" that needs relocations, but that's
3647 the kind of ugly side-effects you get when detecting section
3648 types based on their names... In practice, this limitation is
3649 unlikely to bite. */
3650 if (strcmp (name, ".reloc") == 0)
3651 hdr->sh_type = SHT_PROGBITS;
3652
b34976b6 3653 return TRUE;
38701953
AM		 3654}
3655
9f03412a
AO		 3656/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3657 executables. Rather than setting it to the beginning of the TLS
3658 section, we have to set it to the end. This function may be called
3659 multiple times, it is idempotent. */
3660
3661static void
eb4ff4d6 3662elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3663{
4dfe6ac6 3664 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3665 struct bfd_link_hash_entry *base;
3666
0e1862bb 3667 if (!bfd_link_executable (info))
9f03412a
AO		 3668 return;
3669
4dfe6ac6
NC		 3670 htab = elf_i386_hash_table (info);
3671 if (htab == NULL)
3672 return;
9f03412a 3673
4dfe6ac6
NC		 3674 base = htab->tls_module_base;
3675 if (base == NULL)
9f03412a
AO		 3676 return;
3677
4dfe6ac6 3678 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3679}
3680
13ae64f3
JJ		 3681/* Return the base VMA address which should be subtracted from real addresses
3682 when resolving @dtpoff relocation.
3683 This is PT_TLS segment p_vaddr. */
3684
3685static bfd_vma
eb4ff4d6 3686elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3687{
e1918d23
AM		 3688 /* If tls_sec is NULL, we should have signalled an error already. */
3689 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3690 return 0;
e1918d23 3691 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3692}
3693
3694/* Return the relocation value for @tpoff relocation
3695 if STT_TLS virtual address is ADDRESS. */
3696
3697static bfd_vma
eb4ff4d6 3698elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3699{
e1918d23 3700 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3701 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3702 bfd_vma static_tls_size;
13ae64f3 3703
e1918d23
AM		 3704 /* If tls_sec is NULL, we should have signalled an error already. */
3705 if (htab->tls_sec == NULL)
6a30718d 3706 return 0;
7dc98aea
RO		 3707
3708 /* Consider special static TLS alignment requirements. */
3709 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3710 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3711}
3712
252b5132
RH		 3713/* Relocate an i386 ELF section. */
3714
b34976b6 3715static bfd_boolean
55fd94b0
AM		 3716elf_i386_relocate_section (bfd *output_bfd,
3717 struct bfd_link_info *info,
3718 bfd *input_bfd,
3719 asection *input_section,
3720 bfd_byte *contents,
3721 Elf_Internal_Rela *relocs,
3722 Elf_Internal_Sym *local_syms,
3723 asection **local_sections)
252b5132 3724{
6725bdbf 3725 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3726 Elf_Internal_Shdr *symtab_hdr;
3727 struct elf_link_hash_entry **sym_hashes;
3728 bfd_vma *local_got_offsets;
67a4f2b7 3729 bfd_vma *local_tlsdesc_gotents;
252b5132 3730 Elf_Internal_Rela *rel;
60f2e42e 3731 Elf_Internal_Rela *wrel;
252b5132 3732 Elf_Internal_Rela *relend;
3348747a 3733 bfd_boolean is_vxworks_tls;
25e762b9 3734 unsigned plt_entry_size;
252b5132 3735
0ffa91dd 3736 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3737
6725bdbf 3738 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3739 if (htab == NULL)
3740 return FALSE;
0ffa91dd 3741 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3742 sym_hashes = elf_sym_hashes (input_bfd);
3743 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3744 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3745 /* We have to handle relocations in vxworks .tls_vars sections
3746 specially, because the dynamic loader is 'weird'. */
23209a78 3747 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
0e1862bb 3748 && bfd_link_pic (info)
3348747a
NS		 3749 && !strcmp (input_section->output_section->name,
3750 ".tls_vars"));
252b5132 3751
eb4ff4d6 3752 elf_i386_set_tls_module_base (info);
9f03412a 3753
25e762b9
RM		 3754 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3755
60f2e42e 3756 rel = wrel = relocs;
252b5132 3757 relend = relocs + input_section->reloc_count;
60f2e42e 3758 for (; rel < relend; wrel++, rel++)
252b5132 3759 {
13ae64f3 3760 unsigned int r_type;
252b5132
RH		 3761 reloc_howto_type *howto;
3762 unsigned long r_symndx;
3763 struct elf_link_hash_entry *h;
dd7e64d4 3764 struct elf_i386_link_hash_entry *eh;
252b5132
RH		 3765 Elf_Internal_Sym *sym;
3766 asection *sec;
dd7e64d4 3767 bfd_vma off, offplt, plt_offset;
252b5132 3768 bfd_vma relocation;
b34976b6 3769 bfd_boolean unresolved_reloc;
252b5132 3770 bfd_reloc_status_type r;
1b452ec6 3771 unsigned int indx;
13ae64f3 3772 int tls_type;
1788fc08 3773 bfd_vma st_size;
dd7e64d4 3774 asection *resolved_plt;
aec6b87e 3775 bfd_boolean resolved_to_zero;
252b5132
RH		 3776
3777 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3778 if (r_type == R_386_GNU_VTINHERIT
3779 || r_type == R_386_GNU_VTENTRY)
18954b29
L		 3780 {
3781 if (wrel != rel)
3782 *wrel = *rel;
3783 continue;
3784 }
dc47f327 3785
55fd94b0 3786 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3787 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3788 >= R_386_ext - R_386_standard)
3789 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520 3790 >= R_386_ext2 - R_386_ext))
252b5132 3791 {
6ba842b6 3792 (*_bfd_error_handler)
d003868e
AM		 3793 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3794 input_bfd, input_section, r_type);
252b5132 3795 bfd_set_error (bfd_error_bad_value);
b34976b6 3796 return FALSE;
252b5132 3797 }
1b452ec6 3798 howto = elf_howto_table + indx;
252b5132
RH		 3799
3800 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3801 h = NULL;
3802 sym = NULL;
3803 sec = NULL;
b34976b6 3804 unresolved_reloc = FALSE;
252b5132
RH		 3805 if (r_symndx < symtab_hdr->sh_info)
3806 {
3807 sym = local_syms + r_symndx;
3808 sec = local_sections[r_symndx];
3809 relocation = (sec->output_section->vma
3810 + sec->output_offset
3811 + sym->st_value);
1788fc08 3812 st_size = sym->st_size;
ab96bf03
AM		 3813
3814 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3815 && ((sec->flags & SEC_MERGE) != 0
0e1862bb 3816 || (bfd_link_relocatable (info)
ab96bf03 3817 && sec->output_offset != 0)))
f8df10f4 3818 {
f8df10f4 3819 bfd_vma addend;
4a335f3d 3820 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3821
4a335f3d 3822 switch (howto->size)
f8df10f4 3823 {
4a335f3d
AM		 3824 case 0:
3825 addend = bfd_get_8 (input_bfd, where);
3826 if (howto->pc_relative)
3827 {
3828 addend = (addend ^ 0x80) - 0x80;
3829 addend += 1;
3830 }
3831 break;
3832 case 1:
3833 addend = bfd_get_16 (input_bfd, where);
3834 if (howto->pc_relative)
3835 {
3836 addend = (addend ^ 0x8000) - 0x8000;
3837 addend += 2;
3838 }
3839 break;
3840 case 2:
3841 addend = bfd_get_32 (input_bfd, where);
3842 if (howto->pc_relative)
3843 {
3844 addend = (addend ^ 0x80000000) - 0x80000000;
3845 addend += 4;
3846 }
3847 break;
3848 default:
3849 abort ();
f8df10f4
JJ		 3850 }
3851
0e1862bb 3852 if (bfd_link_relocatable (info))
ab96bf03
AM		 3853 addend += sec->output_offset;
3854 else
3855 {
3856 asection *msec = sec;
3857 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3858 addend);
3859 addend -= relocation;
3860 addend += msec->output_section->vma + msec->output_offset;
3861 }
4a335f3d
AM		 3862
3863 switch (howto->size)
3864 {
3865 case 0:
16a10388 3866 /* FIXME: overflow checks. */
4a335f3d
AM		 3867 if (howto->pc_relative)
3868 addend -= 1;
3869 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3870 break;
3871 case 1:
3872 if (howto->pc_relative)
3873 addend -= 2;
3874 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3875 break;
3876 case 2:
3877 if (howto->pc_relative)
3878 addend -= 4;
3879 bfd_put_32 (input_bfd, addend, where);
3880 break;
3881 }
f8df10f4 3882 }
0e1862bb 3883 else if (!bfd_link_relocatable (info)
1f85278f 3884 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3885 {
3886 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3887 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3888 FALSE);
c25bc9fc
L		 3889 if (h == NULL)
3890 abort ();
3891
23209a78 3892 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3893 h->root.u.def.value = sym->st_value;
3894 h->root.u.def.section = sec;
3895 }
252b5132
RH		 3896 }
3897 else
3898 {
3d540e93 3899 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3900 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3901
b2a8e766
AM		 3902 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3903 r_symndx, symtab_hdr, sym_hashes,
3904 h, sec, relocation,
62d887d4 3905 unresolved_reloc, warned, ignored);
1788fc08 3906 st_size = h->size;
252b5132
RH		 3907 }
3908
dbaa2011 3909 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 3910 {
3911 _bfd_clear_contents (howto, input_bfd, input_section,
3912 contents + rel->r_offset);
3913 wrel->r_offset = rel->r_offset;
3914 wrel->r_info = 0;
3915 wrel->r_addend = 0;
3916
3917 /* For ld -r, remove relocations in debug sections against
3918 sections defined in discarded sections. Not done for
3919 eh_frame editing code expects to be present. */
3920 if (bfd_link_relocatable (info)
3921 && (input_section->flags & SEC_DEBUGGING))
3922 wrel--;
3923
3924 continue;
3925 }
9635fe29 3926
0e1862bb 3927 if (bfd_link_relocatable (info))
2d5da473
L		 3928 {
3929 if (wrel != rel)
3930 *wrel = *rel;
3931 continue;
3932 }
ab96bf03 3933
cbe950e9
L		 3934 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3935 it here if it is defined in a non-shared object. */
3936 if (h != NULL
3937 && h->type == STT_GNU_IFUNC
3938 && h->def_regular)
3939 {
3940 asection *plt, *gotplt, *base_got;
3941 bfd_vma plt_index;
4c544807 3942 const char *name;
cbe950e9 3943
97dc35c8
L		 3944 if ((input_section->flags & SEC_ALLOC) == 0)
3945 {
3946 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3947 sections because such sections are not SEC_ALLOC and
3948 thus ld.so will not process them. */
3949 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 3950 continue;
97dc35c8
L		 3951 abort ();
3952 }
3953 else if (h->plt.offset == (bfd_vma) -1)
cbe950e9
L		 3954 abort ();
3955
3956 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3957 if (htab->elf.splt != NULL)
cbe950e9 3958 {
6de2ae4a
L		 3959 plt = htab->elf.splt;
3960 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3961 }
3962 else
3963 {
6de2ae4a
L		 3964 plt = htab->elf.iplt;
3965 gotplt = htab->elf.igotplt;
cbe950e9
L		 3966 }
3967
3968 relocation = (plt->output_section->vma
3969 + plt->output_offset + h->plt.offset);
3970
3971 switch (r_type)
3972 {
3973 default:
4c544807
L		 3974 if (h->root.root.string)
3975 name = h->root.root.string;
3976 else
3977 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3978 NULL);
cbe950e9
L		 3979 (*_bfd_error_handler)
3980 (_("%B: relocation %s against STT_GNU_IFUNC "
3981 "symbol `%s' isn't handled by %s"), input_bfd,
3982 elf_howto_table[r_type].name,
4c544807 3983 name, __FUNCTION__);
cbe950e9
L		 3984 bfd_set_error (bfd_error_bad_value);
3985 return FALSE;
3986
3987 case R_386_32:
710ab287 3988 /* Generate dynamic relcoation only when there is a
c293fa49 3989 non-GOT reference in a shared object. */
0e1862bb 3990 if (bfd_link_pic (info) && h->non_got_ref)
710ab287
L		 3991 {
3992 Elf_Internal_Rela outrel;
710ab287
L		 3993 asection *sreloc;
3994 bfd_vma offset;
3995
c25bc9fc
L		 3996 /* Need a dynamic relocation to get the real function
3997 adddress. */
710ab287
L		 3998 offset = _bfd_elf_section_offset (output_bfd,
3999 info,
4000 input_section,
4001 rel->r_offset);
4002 if (offset == (bfd_vma) -1
4003 || offset == (bfd_vma) -2)
4004 abort ();
4005
4006 outrel.r_offset = (input_section->output_section->vma
4007 + input_section->output_offset
4008 + offset);
4009
4010 if (h->dynindx == -1
44c4ea11 4011 || h->forced_local
0e1862bb 4012 || bfd_link_executable (info))
710ab287
L		 4013 {
4014 /* This symbol is resolved locally. */
56b8aada
L		 4015 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
4016 bfd_put_32 (output_bfd,
4017 (h->root.u.def.value
4018 + h->root.u.def.section->output_section->vma
4019 + h->root.u.def.section->output_offset),
4020 contents + offset);
710ab287
L		 4021 }
4022 else
56b8aada 4023 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 4024
6de2ae4a 4025 sreloc = htab->elf.irelifunc;
59d6ffb2 4026 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 4027
4028 /* If this reloc is against an external symbol, we
4029 do not want to fiddle with the addend. Otherwise,
4030 we need to include the symbol value so that it
4031 becomes an addend for the dynamic reloc. For an
4032 internal symbol, we have updated addend. */
56b8aada 4033 continue;
710ab287 4034 }
d59a60e9 4035 /* FALLTHROUGH */
cbe950e9
L		 4036 case R_386_PC32:
4037 case R_386_PLT32:
4038 goto do_relocation;
4039
4040 case R_386_GOT32:
02a86693 4041 case R_386_GOT32X:
6de2ae4a 4042 base_got = htab->elf.sgot;
cbe950e9
L		 4043 off = h->got.offset;
4044
7afd84dc 4045 if (base_got == NULL)
cbe950e9
L		 4046 abort ();
4047
7afd84dc 4048 if (off == (bfd_vma) -1)
cbe950e9 4049 {
7afd84dc
L		 4050 /* We can't use h->got.offset here to save state, or
4051 even just remember the offset, as finish_dynamic_symbol
4052 would use that as offset into .got. */
6bbec505 4053
6de2ae4a 4054 if (htab->elf.splt != NULL)
7afd84dc 4055 {
25e762b9 4056 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 4057 off = (plt_index + 3) * 4;
6de2ae4a 4058 base_got = htab->elf.sgotplt;
7afd84dc 4059 }
cbe950e9
L		 4060 else
4061 {
25e762b9 4062 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 4063 off = plt_index * 4;
6de2ae4a 4064 base_got = htab->elf.igotplt;
7afd84dc
L		 4065 }
4066
4067 if (h->dynindx == -1
4068 || h->forced_local
4069 || info->symbolic)
4070 {
4071 /* This references the local defitionion. We must
4072 initialize this entry in the global offset table.
4073 Since the offset must always be a multiple of 8,
4074 we use the least significant bit to record
4075 whether we have initialized it already.
4076
4077 When doing a dynamic link, we create a .rela.got
4078 relocation entry to initialize the value. This
4079 is done in the finish_dynamic_symbol routine. */
4080 if ((off & 1) != 0)
4081 off &= ~1;
4082 else
4083 {
4084 bfd_put_32 (output_bfd, relocation,
4085 base_got->contents + off);
4086 h->got.offset |= 1;
4087 }
cbe950e9 4088 }
cbe950e9 4089
7afd84dc 4090 relocation = off;
cbe950e9 4091
7afd84dc 4092 /* Adjust for static executables. */
6de2ae4a 4093 if (htab->elf.splt == NULL)
7afd84dc
L		 4094 relocation += gotplt->output_offset;
4095 }
4096 else
0018b0a3
L		 4097 {
4098 relocation = (base_got->output_section->vma
4099 + base_got->output_offset + off
4100 - gotplt->output_section->vma
4101 - gotplt->output_offset);
4102 /* Adjust for static executables. */
6de2ae4a 4103 if (htab->elf.splt == NULL)
0018b0a3
L		 4104 relocation += gotplt->output_offset;
4105 }
4106
cbe950e9
L		 4107 goto do_relocation;
4108
4109 case R_386_GOTOFF:
4110 relocation -= (gotplt->output_section->vma
4111 + gotplt->output_offset);
4112 goto do_relocation;
4113 }
4114 }
4115
04ebc307 4116 eh = (struct elf_i386_link_hash_entry *) h;
aec6b87e
L		 4117 resolved_to_zero = (eh != NULL
4118 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
4119
252b5132
RH		 4120 switch (r_type)
4121 {
02a86693
L		 4122 case R_386_GOT32X:
4123 /* Avoid optimizing _DYNAMIC since ld.so may use its
4124 link-time address. */
4125 if (h == htab->elf.hdynamic)
4126 goto r_386_got32;
4127
4128 if (bfd_link_pic (info))
4129 {
4130 /* It is OK to convert mov to lea and convert indirect
4131 branch to direct branch. It is OK to convert adc,
4132 add, and, cmp, or, sbb, sub, test, xor only when PIC
4133 is false. */
02e2aef8
L		 4134 unsigned int opcode, addend;
4135 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
4136 if (addend != 0)
4137 goto r_386_got32;
4138 opcode = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
02a86693
L		 4139 if (opcode != 0x8b && opcode != 0xff)
4140 goto r_386_got32;
4141 }
4142
4143 /* Resolve "mov GOT[(%reg)], %reg",
4144 "call/jmp *GOT[(%reg)]", "test %reg, foo@GOT[(%reg)]"
4145 and "binop foo@GOT[(%reg)], %reg". */
4146 if (h == NULL
4147 || (h->plt.offset == (bfd_vma) -1
4148 && h->got.offset == (bfd_vma) -1)
4149 || htab->elf.sgotplt == NULL)
4150 abort ();
4151
4152 offplt = (htab->elf.sgotplt->output_section->vma
4153 + htab->elf.sgotplt->output_offset);
4154
4155 /* It is relative to .got.plt section. */
4156 if (h->got.offset != (bfd_vma) -1)
32875eb1
L		 4157 /* Use GOT entry. Mask off the least significant bit in
4158 GOT offset which may be set by R_386_GOT32 processing
4159 below. */
02a86693
L		 4160 relocation = (htab->elf.sgot->output_section->vma
4161 + htab->elf.sgot->output_offset
32875eb1 4162 + (h->got.offset & ~1) - offplt);
02a86693
L		 4163 else
4164 /* Use GOTPLT entry. */
4165 relocation = (h->plt.offset / plt_entry_size - 1 + 3) * 4;
4166
4167 if (!bfd_link_pic (info))
4168 {
4169 /* If not PIC, add the .got.plt section address for
a3718e9e 4170 baseless addressing. */
02a86693 4171 unsigned int modrm;
02e2aef8 4172 modrm = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
02a86693
L		 4173 if ((modrm & 0xc7) == 0x5)
4174 relocation += offplt;
4175 }
4176
4177 unresolved_reloc = FALSE;
4178 break;
4179
252b5132 4180 case R_386_GOT32:
02a86693 4181r_386_got32:
252b5132
RH		 4182 /* Relocation is to the entry for this symbol in the global
4183 offset table. */
6de2ae4a 4184 if (htab->elf.sgot == NULL)
ffb2e45b 4185 abort ();
252b5132
RH		 4186
4187 if (h != NULL)
4188 {
b34976b6 4189 bfd_boolean dyn;
252b5132
RH		 4190
4191 off = h->got.offset;
ebe50bae 4192 dyn = htab->elf.dynamic_sections_created;
0e1862bb
L		 4193 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4194 bfd_link_pic (info),
4195 h)
4196 || (bfd_link_pic (info)
586119b3 4197 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 4198 || (ELF_ST_VISIBILITY (h->other)
4199 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 4200 {
4201 /* This is actually a static link, or it is a
4202 -Bsymbolic link and the symbol is defined
4203 locally, or the symbol was forced to be local
4204 because of a version file. We must initialize
4205 this entry in the global offset table. Since the
4206 offset must always be a multiple of 4, we use the
4207 least significant bit to record whether we have
4208 initialized it already.
4209
4210 When doing a dynamic link, we create a .rel.got
4211 relocation entry to initialize the value. This
4212 is done in the finish_dynamic_symbol routine. */
4213 if ((off & 1) != 0)
4214 off &= ~1;
4215 else
4216 {
4217 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4218 htab->elf.sgot->contents + off);
252b5132
RH		 4219 h->got.offset |= 1;
4220 }
4221 }
8c694914 4222 else
b34976b6 4223 unresolved_reloc = FALSE;
252b5132
RH		 4224 }
4225 else
4226 {
ffb2e45b
AM		 4227 if (local_got_offsets == NULL)
4228 abort ();
252b5132
RH		 4229
4230 off = local_got_offsets[r_symndx];
4231
4232 /* The offset must always be a multiple of 4. We use
83be169b
AM		 4233 the least significant bit to record whether we have
4234 already generated the necessary reloc. */
252b5132
RH		 4235 if ((off & 1) != 0)
4236 off &= ~1;
4237 else
4238 {
6725bdbf 4239 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4240 htab->elf.sgot->contents + off);
252b5132 4241
0e1862bb 4242 if (bfd_link_pic (info))
252b5132 4243 {
947216bf
AM		 4244 asection *s;
4245 Elf_Internal_Rela outrel;
252b5132 4246
6de2ae4a 4247 s = htab->elf.srelgot;
947216bf 4248 if (s == NULL)
ffb2e45b 4249 abort ();
252b5132 4250
6de2ae4a
L		 4251 outrel.r_offset = (htab->elf.sgot->output_section->vma
4252 + htab->elf.sgot->output_offset
252b5132
RH		 4253 + off);
4254 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 4255 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 4256 }
4257
4258 local_got_offsets[r_symndx] |= 1;
4259 }
252b5132
RH		 4260 }
4261
ffb2e45b
AM		 4262 if (off >= (bfd_vma) -2)
4263 abort ();
4264
6de2ae4a
L		 4265 relocation = htab->elf.sgot->output_section->vma
4266 + htab->elf.sgot->output_offset + off
4267 - htab->elf.sgotplt->output_section->vma
4268 - htab->elf.sgotplt->output_offset;
252b5132
RH		 4269 break;
4270
4271 case R_386_GOTOFF:
4272 /* Relocation is relative to the start of the global offset
4273 table. */
4274
3d949995
L		 4275 /* Check to make sure it isn't a protected function or data
4276 symbol for shared library since it may not be local when
4277 used as function address or with copy relocation. We also
e3c0e327 4278 need to make sure that a symbol is referenced locally. */
0e1862bb 4279 if (!bfd_link_executable (info) && h)
90f487df 4280 {
41bed6dd
L		 4281 if (!h->def_regular)
4282 {
4283 const char *v;
4284
4285 switch (ELF_ST_VISIBILITY (h->other))
4286 {
4287 case STV_HIDDEN:
4288 v = _("hidden symbol");
4289 break;
4290 case STV_INTERNAL:
4291 v = _("internal symbol");
4292 break;
4293 case STV_PROTECTED:
4294 v = _("protected symbol");
4295 break;
4296 default:
4297 v = _("symbol");
4298 break;
4299 }
4300
4301 (*_bfd_error_handler)
4302 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
4303 input_bfd, v, h->root.root.string);
4304 bfd_set_error (bfd_error_bad_value);
4305 return FALSE;
4306 }
d5597ebc 4307 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
3d949995
L		 4308 && (h->type == STT_FUNC
4309 || h->type == STT_OBJECT)
41bed6dd
L		 4310 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
4311 {
4312 (*_bfd_error_handler)
3d949995
L		 4313 (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
4314 input_bfd,
4315 h->type == STT_FUNC ? "function" : "data",
4316 h->root.root.string);
41bed6dd
L		 4317 bfd_set_error (bfd_error_bad_value);
4318 return FALSE;
4319 }
90f487df
L		 4320 }
4321
8c37241b
JJ		 4322 /* Note that sgot is not involved in this
4323 calculation. We always want the start of .got.plt. If we
4324 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 4325 permitted by the ABI, we might have to change this
4326 calculation. */
6de2ae4a
L		 4327 relocation -= htab->elf.sgotplt->output_section->vma
4328 + htab->elf.sgotplt->output_offset;
252b5132
RH		 4329 break;
4330
4331 case R_386_GOTPC:
4332 /* Use global offset table as symbol value. */
6de2ae4a
L		 4333 relocation = htab->elf.sgotplt->output_section->vma
4334 + htab->elf.sgotplt->output_offset;
b34976b6 4335 unresolved_reloc = FALSE;
252b5132
RH		 4336 break;
4337
4338 case R_386_PLT32:
4339 /* Relocation is to the entry for this symbol in the
4340 procedure linkage table. */
4341
dd5724d5 4342 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 4343 without using the procedure linkage table. */
252b5132
RH		 4344 if (h == NULL)
4345 break;
4346
dd7e64d4
L		 4347 if ((h->plt.offset == (bfd_vma) -1
4348 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 4349 || htab->elf.splt == NULL)
252b5132
RH		 4350 {
4351 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 4352 happens when statically linking PIC code, or when
4353 using -Bsymbolic. */
252b5132
RH		 4354 break;
4355 }
4356
dd7e64d4
L		 4357 if (h->plt.offset != (bfd_vma) -1)
4358 {
4359 resolved_plt = htab->elf.splt;
4360 plt_offset = h->plt.offset;
4361 }
4362 else
4363 {
4364 resolved_plt = htab->plt_got;
4365 plt_offset = eh->plt_got.offset;
4366 }
4367
4368 relocation = (resolved_plt->output_section->vma
4369 + resolved_plt->output_offset
4370 + plt_offset);
b34976b6 4371 unresolved_reloc = FALSE;
252b5132
RH		 4372 break;
4373
1788fc08 4374 case R_386_SIZE32:
1788fc08
L		 4375 /* Set to symbol size. */
4376 relocation = st_size;
4377 /* Fall through. */
4378
252b5132
RH		 4379 case R_386_32:
4380 case R_386_PC32:
3348747a
NS		 4381 if ((input_section->flags & SEC_ALLOC) == 0
4382 || is_vxworks_tls)
ec338859
AM		 4383 break;
4384
aec6b87e
L		 4385 /* Copy dynamic function pointer relocations. Don't generate
4386 dynamic relocations against resolved undefined weak symbols
4387 in PIE, except for R_386_PC32. */
0e1862bb 4388 if ((bfd_link_pic (info)
ef5aade5 4389 && (h == NULL
aec6b87e
L		 4390 || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4391 && (!resolved_to_zero
4392 || r_type == R_386_PC32))
4393 || h->root.type != bfd_link_hash_undefweak))
1788fc08 4394 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 4395 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845 4396 || (ELIMINATE_COPY_RELOCS
0e1862bb 4397 && !bfd_link_pic (info)
12d0ee4a
AM		 4398 && h != NULL
4399 && h->dynindx != -1
aec6b87e
L		 4400 && (!h->non_got_ref
4401 || eh->func_pointer_refcount > 0
4402 || (h->root.type == bfd_link_hash_undefweak
4403 && !resolved_to_zero))
bae420ef
L		 4404 && ((h->def_dynamic && !h->def_regular)
4405 /* Undefined weak symbol is bound locally when
4406 PIC is false. */
4407 || h->root.type == bfd_link_hash_undefweak)))
252b5132 4408 {
947216bf 4409 Elf_Internal_Rela outrel;
b34976b6 4410 bfd_boolean skip, relocate;
0c715baa 4411 asection *sreloc;
252b5132
RH		 4412
4413 /* When generating a shared object, these relocations
4414 are copied into the output file to be resolved at run
4415 time. */
4416
b34976b6
AM		 4417 skip = FALSE;
4418 relocate = FALSE;
252b5132 4419
c629eae0
JJ		 4420 outrel.r_offset =
4421 _bfd_elf_section_offset (output_bfd, info, input_section,
4422 rel->r_offset);
4423 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4424 skip = TRUE;
0bb2d96a 4425 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4426 skip = TRUE, relocate = TRUE;
252b5132
RH		 4427 outrel.r_offset += (input_section->output_section->vma
4428 + input_section->output_offset);
4429
4430 if (skip)
0bb2d96a 4431 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 4432 else if (h != NULL
4433 && h->dynindx != -1
4434 && (r_type == R_386_PC32
4e0c91e4
L		 4435 || !(bfd_link_executable (info)
4436 || SYMBOLIC_BIND (info, h))
f5385ebf 4437 || !h->def_regular))
0bb2d96a 4438 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 4439 else
4440 {
5a15f56f 4441 /* This symbol is local, or marked to become local. */
b34976b6 4442 relocate = TRUE;
5a15f56f 4443 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 4444 }
4445
cbe950e9 4446 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 4447
62d78908
L		 4448 if (sreloc == NULL || sreloc->contents == NULL)
4449 {
4450 r = bfd_reloc_notsupported;
4451 goto check_relocation_error;
4452 }
0c715baa 4453
59d6ffb2 4454 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 4455
4456 /* If this reloc is against an external symbol, we do
4457 not want to fiddle with the addend. Otherwise, we
4458 need to include the symbol value so that it becomes
4459 an addend for the dynamic reloc. */
0f88be7a 4460 if (! relocate)
252b5132
RH		 4461 continue;
4462 }
252b5132
RH		 4463 break;
4464
37e55690 4465 case R_386_TLS_IE:
0e1862bb 4466 if (!bfd_link_executable (info))
37e55690 4467 {
947216bf 4468 Elf_Internal_Rela outrel;
37e55690 4469 asection *sreloc;
37e55690
JJ		 4470
4471 outrel.r_offset = rel->r_offset
4472 + input_section->output_section->vma
4473 + input_section->output_offset;
4474 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4475 sreloc = elf_section_data (input_section)->sreloc;
4476 if (sreloc == NULL)
4477 abort ();
59d6ffb2 4478 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4479 }
4480 /* Fall through */
4481
13ae64f3 4482 case R_386_TLS_GD:
67a4f2b7
AO		 4483 case R_386_TLS_GOTDESC:
4484 case R_386_TLS_DESC_CALL:
13ae64f3 4485 case R_386_TLS_IE_32:
37e55690 4486 case R_386_TLS_GOTIE:
13ae64f3
JJ		 4487 tls_type = GOT_UNKNOWN;
4488 if (h == NULL && local_got_offsets)
4489 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
4490 else if (h != NULL)
142411ca 4491 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 4492 if (tls_type == GOT_TLS_IE)
4493 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 4494
4495 if (! elf_i386_tls_transition (info, input_bfd,
4496 input_section, contents,
4497 symtab_hdr, sym_hashes,
4498 &r_type, tls_type, rel,
4c544807 4499 relend, h, r_symndx))
142411ca 4500 return FALSE;
13ae64f3
JJ		 4501
4502 if (r_type == R_386_TLS_LE_32)
4503 {
82e51918 4504 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 4505 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
4506 {
142411ca 4507 unsigned int type;
13ae64f3
JJ		 4508 bfd_vma roff;
4509
4510 /* GD->LE transition. */
13ae64f3 4511 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4512 if (type == 0x04)
4513 {
4514 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4515 Change it into:
4516 movl %gs:0, %eax; subl $foo@tpoff, %eax
4517 (6 byte form of subl). */
13ae64f3
JJ		 4518 memcpy (contents + rel->r_offset - 3,
4519 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 4520 roff = rel->r_offset + 5;
13ae64f3
JJ		 4521 }
4522 else
4523 {
142411ca
L		 4524 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4525 Change it into:
4526 movl %gs:0, %eax; subl $foo@tpoff, %eax
4527 (6 byte form of subl). */
4528 memcpy (contents + rel->r_offset - 2,
4529 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
4530 roff = rel->r_offset + 6;
13ae64f3 4531 }
eb4ff4d6 4532 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 4533 contents + roff);
a3fadc9a 4534 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3 4535 rel++;
60f2e42e 4536 wrel++;
13ae64f3
JJ		 4537 continue;
4538 }
67a4f2b7
AO		 4539 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4540 {
4541 /* GDesc -> LE transition.
4542 It's originally something like:
4543 leal x@tlsdesc(%ebx), %eax
4544
4545 leal x@ntpoff, %eax
4546
4547 Registers other than %eax may be set up here. */
4548
142411ca 4549 unsigned int val;
67a4f2b7
AO		 4550 bfd_vma roff;
4551
67a4f2b7 4552 roff = rel->r_offset;
67a4f2b7 4553 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 4554
4555 /* Now modify the instruction as appropriate. */
4556 /* aoliva FIXME: remove the above and xor the byte
4557 below with 0x86. */
4558 bfd_put_8 (output_bfd, val ^ 0x86,
4559 contents + roff - 1);
eb4ff4d6 4560 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 4561 contents + roff);
4562 continue;
4563 }
4564 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4565 {
4566 /* GDesc -> LE transition.
4567 It's originally:
4568 call *(%eax)
4569 Turn it into:
142411ca 4570 xchg %ax,%ax */
67a4f2b7 4571
67a4f2b7 4572 bfd_vma roff;
6bbec505 4573
67a4f2b7 4574 roff = rel->r_offset;
10efb593 4575 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4576 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4577 continue;
4578 }
37e55690 4579 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 4580 {
142411ca 4581 unsigned int val;
13ae64f3
JJ		 4582
4583 /* IE->LE transition:
37e55690
JJ		 4584 Originally it can be one of:
4585 movl foo, %eax
4586 movl foo, %reg
4587 addl foo, %reg
4588 We change it into:
4589 movl $foo, %eax
4590 movl $foo, %reg
4591 addl $foo, %reg. */
37e55690 4592 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 4593 if (val == 0xa1)
4594 {
4595 /* movl foo, %eax. */
55fd94b0
AM		 4596 bfd_put_8 (output_bfd, 0xb8,
4597 contents + rel->r_offset - 1);
37e55690 4598 }
299bf759 4599 else
37e55690 4600 {
142411ca
L		 4601 unsigned int type;
4602
55fd94b0
AM		 4603 type = bfd_get_8 (input_bfd,
4604 contents + rel->r_offset - 2);
299bf759 4605 switch (type)
26e41594 4606 {
299bf759
L		 4607 case 0x8b:
4608 /* movl */
299bf759
L		 4609 bfd_put_8 (output_bfd, 0xc7,
4610 contents + rel->r_offset - 2);
4611 bfd_put_8 (output_bfd,
4612 0xc0 | ((val >> 3) & 7),
4613 contents + rel->r_offset - 1);
4614 break;
4615 case 0x03:
4616 /* addl */
299bf759
L		 4617 bfd_put_8 (output_bfd, 0x81,
4618 contents + rel->r_offset - 2);
4619 bfd_put_8 (output_bfd,
4620 0xc0 | ((val >> 3) & 7),
4621 contents + rel->r_offset - 1);
4622 break;
4623 default:
4624 BFD_FAIL ();
4625 break;
26e41594 4626 }
37e55690 4627 }
eb4ff4d6 4628 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4629 contents + rel->r_offset);
4630 continue;
4631 }
4632 else
4633 {
4634 unsigned int val, type;
4635
4636 /* {IE_32,GOTIE}->LE transition:
4637 Originally it can be one of:
13ae64f3 4638 subl foo(%reg1), %reg2
13ae64f3 4639 movl foo(%reg1), %reg2
37e55690 4640 addl foo(%reg1), %reg2
13ae64f3
JJ		 4641 We change it into:
4642 subl $foo, %reg2
37e55690
JJ		 4643 movl $foo, %reg2 (6 byte form)
4644 addl $foo, %reg2. */
13ae64f3
JJ		 4645 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4646 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4647 if (type == 0x8b)
4648 {
4649 /* movl */
13ae64f3
JJ		 4650 bfd_put_8 (output_bfd, 0xc7,
4651 contents + rel->r_offset - 2);
4652 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4653 contents + rel->r_offset - 1);
4654 }
4655 else if (type == 0x2b)
4656 {
4657 /* subl */
13ae64f3
JJ		 4658 bfd_put_8 (output_bfd, 0x81,
4659 contents + rel->r_offset - 2);
4660 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4661 contents + rel->r_offset - 1);
4662 }
37e55690
JJ		 4663 else if (type == 0x03)
4664 {
4665 /* addl */
4666 bfd_put_8 (output_bfd, 0x81,
4667 contents + rel->r_offset - 2);
4668 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4669 contents + rel->r_offset - 1);
4670 }
13ae64f3
JJ		 4671 else
4672 BFD_FAIL ();
37e55690 4673 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4674 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4675 contents + rel->r_offset);
4676 else
eb4ff4d6 4677 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4678 contents + rel->r_offset);
13ae64f3
JJ		 4679 continue;
4680 }
4681 }
4682
6de2ae4a 4683 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4684 abort ();
4685
4686 if (h != NULL)
67a4f2b7
AO		 4687 {
4688 off = h->got.offset;
4689 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4690 }
13ae64f3
JJ		 4691 else
4692 {
4693 if (local_got_offsets == NULL)
4694 abort ();
4695
4696 off = local_got_offsets[r_symndx];
67a4f2b7 4697 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4698 }
4699
4700 if ((off & 1) != 0)
4701 off &= ~1;
26e41594 4702 else
13ae64f3 4703 {
947216bf 4704 Elf_Internal_Rela outrel;
91d6fa6a 4705 int dr_type;
67a4f2b7 4706 asection *sreloc;
13ae64f3 4707
6de2ae4a 4708 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4709 abort ();
4710
67a4f2b7
AO		 4711 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4712
4713 if (GOT_TLS_GDESC_P (tls_type))
4714 {
59d6ffb2 4715 bfd_byte *loc;
67a4f2b7
AO		 4716 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4717 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4718 <= htab->elf.sgotplt->size);
4719 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4720 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4721 + offplt
4722 + htab->sgotplt_jump_table_size);
6de2ae4a 4723 sreloc = htab->elf.srelplt;
67a4f2b7 4724 loc = sreloc->contents;
5ae0bfb6
RS		 4725 loc += (htab->next_tls_desc_index++
4726 * sizeof (Elf32_External_Rel));
67a4f2b7 4727 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4728 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4729 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4730 if (indx == 0)
4731 {
4732 BFD_ASSERT (! unresolved_reloc);
4733 bfd_put_32 (output_bfd,
eb4ff4d6 4734 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4735 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4736 + htab->sgotplt_jump_table_size + 4);
4737 }
4738 else
4739 {
4740 bfd_put_32 (output_bfd, 0,
6de2ae4a 4741 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4742 + htab->sgotplt_jump_table_size + 4);
4743 }
4744 }
4745
6de2ae4a 4746 sreloc = htab->elf.srelgot;
67a4f2b7 4747
6de2ae4a
L		 4748 outrel.r_offset = (htab->elf.sgot->output_section->vma
4749 + htab->elf.sgot->output_offset + off);
13ae64f3 4750
67a4f2b7 4751 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4752 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4753 else if (GOT_TLS_GDESC_P (tls_type))
4754 goto dr_done;
37e55690
JJ		 4755 else if (tls_type == GOT_TLS_IE_POS)
4756 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4757 else
4758 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4759
37e55690 4760 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4761 bfd_put_32 (output_bfd,
4762 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4763 htab->elf.sgot->contents + off);
37e55690 4764 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4765 bfd_put_32 (output_bfd,
eb4ff4d6 4766 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4767 htab->elf.sgot->contents + off);
67a4f2b7 4768 else if (dr_type != R_386_TLS_DESC)
c366c25e 4769 bfd_put_32 (output_bfd, 0,
6de2ae4a 4770 htab->elf.sgot->contents + off);
13ae64f3 4771 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4772
59d6ffb2 4773 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4774
67a4f2b7 4775 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4776 {
4777 if (indx == 0)
4778 {
82e51918 4779 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4780 bfd_put_32 (output_bfd,
eb4ff4d6 4781 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4782 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4783 }
4784 else
4785 {
4786 bfd_put_32 (output_bfd, 0,
6de2ae4a 4787 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4788 outrel.r_info = ELF32_R_INFO (indx,
4789 R_386_TLS_DTPOFF32);
4790 outrel.r_offset += 4;
59d6ffb2 4791 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4792 }
4793 }
37e55690
JJ		 4794 else if (tls_type == GOT_TLS_IE_BOTH)
4795 {
4796 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4797 (indx == 0
4798 ? relocation - elf_i386_dtpoff_base (info)
4799 : 0),
6de2ae4a 4800 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4801 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4802 outrel.r_offset += 4;
59d6ffb2 4803 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4804 }
13ae64f3 4805
67a4f2b7 4806 dr_done:
13ae64f3
JJ		 4807 if (h != NULL)
4808 h->got.offset |= 1;
4809 else
4810 local_got_offsets[r_symndx] |= 1;
4811 }
4812
67a4f2b7
AO		 4813 if (off >= (bfd_vma) -2
4814 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4815 abort ();
67a4f2b7
AO		 4816 if (r_type == R_386_TLS_GOTDESC
4817 || r_type == R_386_TLS_DESC_CALL)
4818 {
4819 relocation = htab->sgotplt_jump_table_size + offplt;
4820 unresolved_reloc = FALSE;
4821 }
4822 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4823 {
6de2ae4a
L		 4824 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4825 + htab->elf.sgotplt->output_offset;
4826 relocation = htab->elf.sgot->output_section->vma
4827 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4828 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4829 && tls_type == GOT_TLS_IE_BOTH)
4830 relocation += 4;
4831 if (r_type == R_386_TLS_IE)
8c37241b 4832 relocation += g_o_t;
b34976b6 4833 unresolved_reloc = FALSE;
13ae64f3 4834 }
67a4f2b7 4835 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4836 {
4837 unsigned int val, type;
4838 bfd_vma roff;
4839
4840 /* GD->IE transition. */
13ae64f3 4841 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4842 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4843 if (type == 0x04)
4844 {
4845 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4846 Change it into:
4847 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4848 val >>= 3;
142411ca 4849 roff = rel->r_offset - 3;
13ae64f3
JJ		 4850 }
4851 else
4852 {
4853 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4854 Change it into:
4855 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4856 roff = rel->r_offset - 2;
4857 }
4858 memcpy (contents + roff,
4859 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4860 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4861 /* If foo is used only with foo@gotntpoff(%reg) and
4862 foo@indntpoff, but not with foo@gottpoff(%reg), change
4863 subl $foo@gottpoff(%reg), %eax
4864 into:
4865 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4866 if (tls_type == GOT_TLS_IE_POS)
4867 contents[roff + 6] = 0x03;
8c37241b 4868 bfd_put_32 (output_bfd,
6de2ae4a
L		 4869 htab->elf.sgot->output_section->vma
4870 + htab->elf.sgot->output_offset + off
4871 - htab->elf.sgotplt->output_section->vma
4872 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4873 contents + roff + 8);
4874 /* Skip R_386_PLT32. */
4875 rel++;
60f2e42e 4876 wrel++;
13ae64f3
JJ		 4877 continue;
4878 }
67a4f2b7
AO		 4879 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4880 {
4881 /* GDesc -> IE transition.
4882 It's originally something like:
4883 leal x@tlsdesc(%ebx), %eax
4884
4885 Change it to:
142411ca 4886 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4887 or:
4888 movl x@gottpoff(%ebx), %eax # before negl %eax
4889
4890 Registers other than %eax may be set up here. */
4891
67a4f2b7
AO		 4892 bfd_vma roff;
4893
4894 /* First, make sure it's a leal adding ebx to a 32-bit
4895 offset into any register, although it's probably
4896 almost always going to be eax. */
4897 roff = rel->r_offset;
67a4f2b7
AO		 4898
4899 /* Now modify the instruction as appropriate. */
4900 /* To turn a leal into a movl in the form we use it, it
4901 suffices to change the first byte from 0x8d to 0x8b.
4902 aoliva FIXME: should we decide to keep the leal, all
4903 we have to do is remove the statement below, and
4904 adjust the relaxation of R_386_TLS_DESC_CALL. */
4905 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4906
4907 if (tls_type == GOT_TLS_IE_BOTH)
4908 off += 4;
4909
4910 bfd_put_32 (output_bfd,
6de2ae4a
L		 4911 htab->elf.sgot->output_section->vma
4912 + htab->elf.sgot->output_offset + off
4913 - htab->elf.sgotplt->output_section->vma
4914 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4915 contents + roff);
4916 continue;
4917 }
4918 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4919 {
4920 /* GDesc -> IE transition.
4921 It's originally:
4922 call *(%eax)
4923
4924 Change it to:
142411ca 4925 xchg %ax,%ax
67a4f2b7
AO		 4926 or
4927 negl %eax
4928 depending on how we transformed the TLS_GOTDESC above.
4929 */
4930
67a4f2b7
AO		 4931 bfd_vma roff;
4932
67a4f2b7 4933 roff = rel->r_offset;
67a4f2b7
AO		 4934
4935 /* Now modify the instruction as appropriate. */
4936 if (tls_type != GOT_TLS_IE_NEG)
4937 {
10efb593
L		 4938 /* xchg %ax,%ax */
4939 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4940 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4941 }
4942 else
4943 {
4944 /* negl %eax */
4945 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4946 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4947 }
4948
4949 continue;
4950 }
4951 else
4952 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4953 break;
4954
4955 case R_386_TLS_LDM:
142411ca
L		 4956 if (! elf_i386_tls_transition (info, input_bfd,
4957 input_section, contents,
4958 symtab_hdr, sym_hashes,
4959 &r_type, GOT_UNKNOWN, rel,
4c544807 4960 relend, h, r_symndx))
142411ca 4961 return FALSE;
13ae64f3 4962
142411ca
L		 4963 if (r_type != R_386_TLS_LDM)
4964 {
13ae64f3 4965 /* LD->LE transition:
13ae64f3
JJ		 4966 leal foo(%reg), %eax; call ___tls_get_addr.
4967 We change it into:
4968 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4969 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4970 memcpy (contents + rel->r_offset - 2,
4971 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4972 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3 4973 rel++;
60f2e42e 4974 wrel++;
13ae64f3
JJ		 4975 continue;
4976 }
4977
6de2ae4a 4978 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4979 abort ();
4980
4981 off = htab->tls_ldm_got.offset;
4982 if (off & 1)
4983 off &= ~1;
4984 else
4985 {
947216bf 4986 Elf_Internal_Rela outrel;
13ae64f3 4987
6de2ae4a 4988 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4989 abort ();
4990
6de2ae4a
L		 4991 outrel.r_offset = (htab->elf.sgot->output_section->vma
4992 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4993
4994 bfd_put_32 (output_bfd, 0,
6de2ae4a 4995 htab->elf.sgot->contents + off);
13ae64f3 4996 bfd_put_32 (output_bfd, 0,
6de2ae4a 4997 htab->elf.sgot->contents + off + 4);
13ae64f3 4998 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4999 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 5000 htab->tls_ldm_got.offset |= 1;
5001 }
6de2ae4a
L		 5002 relocation = htab->elf.sgot->output_section->vma
5003 + htab->elf.sgot->output_offset + off
5004 - htab->elf.sgotplt->output_section->vma
5005 - htab->elf.sgotplt->output_offset;
b34976b6 5006 unresolved_reloc = FALSE;
13ae64f3
JJ		 5007 break;
5008
5009 case R_386_TLS_LDO_32:
0e1862bb
L		 5010 if (!bfd_link_executable (info)
5011 || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 5012 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 5013 else
5014 /* When converting LDO to LE, we must negate. */
eb4ff4d6 5015 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 5016 break;
5017
5018 case R_386_TLS_LE_32:
13ae64f3 5019 case R_386_TLS_LE:
0e1862bb 5020 if (!bfd_link_executable (info))
37e55690 5021 {
947216bf 5022 Elf_Internal_Rela outrel;
37e55690 5023 asection *sreloc;
37e55690
JJ		 5024
5025 outrel.r_offset = rel->r_offset
5026 + input_section->output_section->vma
5027 + input_section->output_offset;
5028 if (h != NULL && h->dynindx != -1)
5029 indx = h->dynindx;
5030 else
5031 indx = 0;
5032 if (r_type == R_386_TLS_LE_32)
5033 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
5034 else
5035 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
5036 sreloc = elf_section_data (input_section)->sreloc;
5037 if (sreloc == NULL)
5038 abort ();
59d6ffb2 5039 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 5040 if (indx)
5041 continue;
5042 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 5043 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 5044 else
eb4ff4d6 5045 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 5046 }
5047 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 5048 relocation = elf_i386_tpoff (info, relocation);
37e55690 5049 else
eb4ff4d6 5050 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 5051 break;
5052
252b5132
RH		 5053 default:
5054 break;
5055 }
5056
239e1f3a
AM		 5057 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5058 because such sections are not SEC_ALLOC and thus ld.so will
5059 not process them. */
8c694914 5060 if (unresolved_reloc
239e1f3a 5061 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 5062 && h->def_dynamic)
5063 && _bfd_elf_section_offset (output_bfd, info, input_section,
5064 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 5065 {
5066 (*_bfd_error_handler)
843fe662 5067 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 5068 input_bfd,
5069 input_section,
6a30718d 5070 (long) rel->r_offset,
843fe662 5071 howto->name,
6a30718d 5072 h->root.root.string);
b34976b6 5073 return FALSE;
6a30718d 5074 }
83be169b 5075
cbe950e9 5076do_relocation:
252b5132
RH		 5077 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
5078 contents, rel->r_offset,
55fd94b0 5079 relocation, 0);
252b5132 5080
62d78908 5081check_relocation_error:
cf5c0c5b 5082 if (r != bfd_reloc_ok)
252b5132 5083 {
cf5c0c5b 5084 const char *name;
ffb2e45b 5085
cf5c0c5b
AM		 5086 if (h != NULL)
5087 name = h->root.root.string;
5088 else
5089 {
5090 name = bfd_elf_string_from_elf_section (input_bfd,
5091 symtab_hdr->sh_link,
5092 sym->st_name);
5093 if (name == NULL)
b34976b6 5094 return FALSE;
cf5c0c5b
AM		 5095 if (*name == '\0')
5096 name = bfd_section_name (input_bfd, sec);
5097 }
ffb2e45b 5098
cf5c0c5b
AM		 5099 if (r == bfd_reloc_overflow)
5100 {
cf5c0c5b 5101 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 5102 (info, (h ? &h->root : NULL), name, howto->name,
5103 (bfd_vma) 0, input_bfd, input_section,
5104 rel->r_offset)))
b34976b6 5105 return FALSE;
cf5c0c5b
AM		 5106 }
5107 else
5108 {
5109 (*_bfd_error_handler)
d003868e
AM		 5110 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
5111 input_bfd, input_section,
cf5c0c5b 5112 (long) rel->r_offset, name, (int) r);
b34976b6 5113 return FALSE;
cf5c0c5b 5114 }
252b5132 5115 }
60f2e42e
L		 5116
5117 if (wrel != rel)
5118 *wrel = *rel;
5119 }
5120
5121 if (wrel != rel)
5122 {
5123 Elf_Internal_Shdr *rel_hdr;
5124 size_t deleted = rel - wrel;
5125
5126 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
5127 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5128 if (rel_hdr->sh_size == 0)
5129 {
5130 /* It is too late to remove an empty reloc section. Leave
5131 one NONE reloc.
5132 ??? What is wrong with an empty section??? */
5133 rel_hdr->sh_size = rel_hdr->sh_entsize;
5134 deleted -= 1;
5135 }
5136 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
5137 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5138 input_section->reloc_count -= deleted;
252b5132
RH		 5139 }
5140
b34976b6 5141 return TRUE;
252b5132
RH		 5142}
5143
5144/* Finish up dynamic symbol handling. We set the contents of various
5145 dynamic sections here. */
5146
b34976b6 5147static bfd_boolean
55fd94b0
AM		 5148elf_i386_finish_dynamic_symbol (bfd *output_bfd,
5149 struct bfd_link_info *info,
5150 struct elf_link_hash_entry *h,
5151 Elf_Internal_Sym *sym)
252b5132 5152{
6725bdbf 5153 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 5154 unsigned plt_entry_size;
5155 const struct elf_i386_backend_data *abed;
dd7e64d4 5156 struct elf_i386_link_hash_entry *eh;
aec6b87e 5157 bfd_boolean local_undefweak;
252b5132 5158
6725bdbf 5159 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5160 if (htab == NULL)
5161 return FALSE;
252b5132 5162
25e762b9
RM		 5163 abed = get_elf_i386_backend_data (output_bfd);
5164 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
5165
dd7e64d4
L		 5166 eh = (struct elf_i386_link_hash_entry *) h;
5167
aec6b87e
L		 5168 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
5169 resolved undefined weak symbols in executable so that their
5170 references have value 0 at run-time. */
5171 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
5172
252b5132
RH		 5173 if (h->plt.offset != (bfd_vma) -1)
5174 {
252b5132
RH		 5175 bfd_vma plt_index;
5176 bfd_vma got_offset;
947216bf
AM		 5177 Elf_Internal_Rela rel;
5178 bfd_byte *loc;
cbe950e9
L		 5179 asection *plt, *gotplt, *relplt;
5180
5181 /* When building a static executable, use .iplt, .igot.plt and
5182 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 5183 if (htab->elf.splt != NULL)
cbe950e9 5184 {
6de2ae4a
L		 5185 plt = htab->elf.splt;
5186 gotplt = htab->elf.sgotplt;
5187 relplt = htab->elf.srelplt;
cbe950e9
L		 5188 }
5189 else
5190 {
6de2ae4a
L		 5191 plt = htab->elf.iplt;
5192 gotplt = htab->elf.igotplt;
5193 relplt = htab->elf.irelplt;
cbe950e9 5194 }
252b5132
RH		 5195
5196 /* This symbol has an entry in the procedure linkage table. Set
5197 it up. */
5198
cbe950e9 5199 if ((h->dynindx == -1
aec6b87e 5200 && !local_undefweak
0e1862bb 5201 && !((h->forced_local || bfd_link_executable (info))
cbe950e9
L		 5202 && h->def_regular
5203 && h->type == STT_GNU_IFUNC))
5204 || plt == NULL
5205 || gotplt == NULL
5206 || relplt == NULL)
cec7f46a 5207 abort ();
252b5132
RH		 5208
5209 /* Get the index in the procedure linkage table which
5210 corresponds to this symbol. This is the index of this symbol
5211 in all the symbols for which we are making plt entries. The
cbe950e9 5212 first entry in the procedure linkage table is reserved.
252b5132 5213
cbe950e9 5214 Get the offset into the .got table of the entry that
252b5132 5215 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 5216 The first three are reserved.
6bbec505 5217
cbe950e9
L		 5218 For static executables, we don't reserve anything. */
5219
6de2ae4a 5220 if (plt == htab->elf.splt)
cbe950e9 5221 {
e1f98742
L		 5222 got_offset = h->plt.offset / plt_entry_size - 1;
5223 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 5224 }
5225 else
5226 {
e1f98742
L		 5227 got_offset = h->plt.offset / plt_entry_size;
5228 got_offset = got_offset * 4;
cbe950e9 5229 }
252b5132
RH		 5230
5231 /* Fill in the entry in the procedure linkage table. */
0e1862bb 5232 if (! bfd_link_pic (info))
252b5132 5233 {
25e762b9
RM		 5234 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
5235 abed->plt->plt_entry_size);
252b5132 5236 bfd_put_32 (output_bfd,
cbe950e9
L		 5237 (gotplt->output_section->vma
5238 + gotplt->output_offset
252b5132 5239 + got_offset),
25e762b9
RM		 5240 plt->contents + h->plt.offset
5241 + abed->plt->plt_got_offset);
eac338cf 5242
25e762b9 5243 if (abed->is_vxworks)
eac338cf
PB		 5244 {
5245 int s, k, reloc_index;
5246
5247 /* Create the R_386_32 relocation referencing the GOT
5248 for this PLT entry. */
5249
5250 /* S: Current slot number (zero-based). */
25e762b9
RM		 5251 s = ((h->plt.offset - abed->plt->plt_entry_size)
5252 / abed->plt->plt_entry_size);
eac338cf 5253 /* K: Number of relocations for PLTResolve. */
0e1862bb 5254 if (bfd_link_pic (info))
eac338cf
PB		 5255 k = PLTRESOLVE_RELOCS_SHLIB;
5256 else
5257 k = PLTRESOLVE_RELOCS;
5258 /* Skip the PLTresolve relocations, and the relocations for
5259 the other PLT slots. */
5260 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
5261 loc = (htab->srelplt2->contents + reloc_index
5262 * sizeof (Elf32_External_Rel));
5263
6de2ae4a
L		 5264 rel.r_offset = (htab->elf.splt->output_section->vma
5265 + htab->elf.splt->output_offset
eac338cf 5266 + h->plt.offset + 2),
7325306f 5267 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5268 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5269
5270 /* Create the R_386_32 relocation referencing the beginning of
5271 the PLT for this GOT entry. */
6de2ae4a
L		 5272 rel.r_offset = (htab->elf.sgotplt->output_section->vma
5273 + htab->elf.sgotplt->output_offset
eac338cf 5274 + got_offset);
7325306f 5275 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 5276 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 5277 loc + sizeof (Elf32_External_Rel));
eac338cf 5278 }
252b5132
RH		 5279 }
5280 else
5281 {
25e762b9
RM		 5282 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
5283 abed->plt->plt_entry_size);
252b5132 5284 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 5285 plt->contents + h->plt.offset
5286 + abed->plt->plt_got_offset);
252b5132
RH		 5287 }
5288
aec6b87e
L		 5289 /* Fill in the entry in the global offset table. Leave the entry
5290 as zero for undefined weak symbol in PIE. No PLT relocation
5291 against undefined weak symbol in PIE. */
5292 if (!local_undefweak)
cbe950e9 5293 {
cbe950e9 5294 bfd_put_32 (output_bfd,
aec6b87e
L		 5295 (plt->output_section->vma
5296 + plt->output_offset
5297 + h->plt.offset
5298 + abed->plt->plt_lazy_offset),
cbe950e9 5299 gotplt->contents + got_offset);
252b5132 5300
aec6b87e
L		 5301 /* Fill in the entry in the .rel.plt section. */
5302 rel.r_offset = (gotplt->output_section->vma
5303 + gotplt->output_offset
5304 + got_offset);
5305 if (h->dynindx == -1
5306 || ((bfd_link_executable (info)
5307 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5308 && h->def_regular
5309 && h->type == STT_GNU_IFUNC))
5310 {
5311 /* If an STT_GNU_IFUNC symbol is locally defined, generate
5312 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
5313 in the .got.plt section. */
5314 bfd_put_32 (output_bfd,
5315 (h->root.u.def.value
5316 + h->root.u.def.section->output_section->vma
5317 + h->root.u.def.section->output_offset),
5318 gotplt->contents + got_offset);
5319 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
5320 /* R_386_IRELATIVE comes last. */
5321 plt_index = htab->next_irelative_index--;
5322 }
5323 else
5324 {
5325 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
5326 plt_index = htab->next_jump_slot_index++;
5327 }
5328
5329 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
5330 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5331
5332 /* Don't fill PLT entry for static executables. */
5333 if (plt == htab->elf.splt)
5334 {
5335 bfd_put_32 (output_bfd,
5336 plt_index * sizeof (Elf32_External_Rel),
5337 plt->contents + h->plt.offset
5338 + abed->plt->plt_reloc_offset);
5339 bfd_put_32 (output_bfd, - (h->plt.offset
5340 + abed->plt->plt_plt_offset + 4),
5341 plt->contents + h->plt.offset
5342 + abed->plt->plt_plt_offset);
5343 }
e1f98742 5344 }
dd7e64d4
L		 5345 }
5346 else if (eh->plt_got.offset != (bfd_vma) -1)
5347 {
5348 bfd_vma got_offset, plt_offset;
5349 asection *plt, *got, *gotplt;
5350 const bfd_byte *got_plt_entry;
5351
5352 /* Offset of displacement of the indirect jump. */
5353 bfd_vma plt_got_offset = 2;
e1f98742 5354
dd7e64d4
L		 5355 /* Set the entry in the GOT procedure linkage table. */
5356 plt = htab->plt_got;
5357 got = htab->elf.sgot;
5358 gotplt = htab->elf.sgotplt;
5359 got_offset = h->got.offset;
5360
5361 if (got_offset == (bfd_vma) -1
5362 || plt == NULL
5363 || got == NULL
5364 || gotplt == NULL)
5365 abort ();
5366
5367 /* Fill in the entry in the GOT procedure linkage table. */
0e1862bb 5368 if (! bfd_link_pic (info))
252b5132 5369 {
dd7e64d4
L		 5370 got_plt_entry = elf_i386_got_plt_entry;
5371 got_offset += got->output_section->vma + got->output_offset;
252b5132 5372 }
dd7e64d4
L		 5373 else
5374 {
5375 got_plt_entry = elf_i386_pic_got_plt_entry;
5376 got_offset += (got->output_section->vma
5377 + got->output_offset
5378 - gotplt->output_section->vma
5379 - gotplt->output_offset);
5380 }
5381
5382 plt_offset = eh->plt_got.offset;
5383 memcpy (plt->contents + plt_offset, got_plt_entry,
5384 sizeof (elf_i386_got_plt_entry));
5385 bfd_put_32 (output_bfd, got_offset,
5386 plt->contents + plt_offset + plt_got_offset);
5387 }
5388
aec6b87e
L		 5389 if (!local_undefweak
5390 && !h->def_regular
dd7e64d4
L		 5391 && (h->plt.offset != (bfd_vma) -1
5392 || eh->plt_got.offset != (bfd_vma) -1))
5393 {
5394 /* Mark the symbol as undefined, rather than as defined in
5395 the .plt section. Leave the value if there were any
5396 relocations where pointer equality matters (this is a clue
5397 for the dynamic linker, to make function pointer
5398 comparisons work between an application and shared
5399 library), otherwise set it to zero. If a function is only
5400 called from a binary, there is no need to slow down
5401 shared libraries because of that. */
5402 sym->st_shndx = SHN_UNDEF;
5403 if (!h->pointer_equality_needed)
5404 sym->st_value = 0;
252b5132
RH		 5405 }
5406
aec6b87e
L		 5407 /* Don't generate dynamic GOT relocation against undefined weak
5408 symbol in executable. */
13ae64f3 5409 if (h->got.offset != (bfd_vma) -1
67a4f2b7 5410 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
aec6b87e
L		 5411 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0
5412 && !local_undefweak)
252b5132 5413 {
947216bf 5414 Elf_Internal_Rela rel;
252b5132
RH		 5415
5416 /* This symbol has an entry in the global offset table. Set it
5417 up. */
5418
6de2ae4a 5419 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 5420 abort ();
252b5132 5421
6de2ae4a
L		 5422 rel.r_offset = (htab->elf.sgot->output_section->vma
5423 + htab->elf.sgot->output_offset
dc810e39 5424 + (h->got.offset & ~(bfd_vma) 1));
252b5132 5425
dd5724d5
AM		 5426 /* If this is a static link, or it is a -Bsymbolic link and the
5427 symbol is defined locally or was forced to be local because
5428 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 5429 The entry in the global offset table will already have been
5430 initialized in the relocate_section function. */
710ab287 5431 if (h->def_regular
0018b0a3
L		 5432 && h->type == STT_GNU_IFUNC)
5433 {
0e1862bb 5434 if (bfd_link_pic (info))
710ab287
L		 5435 {
5436 /* Generate R_386_GLOB_DAT. */
5437 goto do_glob_dat;
5438 }
5439 else
5440 {
cd2b2c10
L		 5441 asection *plt;
5442
710ab287
L		 5443 if (!h->pointer_equality_needed)
5444 abort ();
5445
5446 /* For non-shared object, we can't use .got.plt, which
5447 contains the real function addres if we need pointer
5448 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 5449 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 5450 bfd_put_32 (output_bfd,
5451 (plt->output_section->vma
5452 + plt->output_offset + h->plt.offset),
6de2ae4a 5453 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 5454 return TRUE;
5455 }
0018b0a3 5456 }
0e1862bb 5457 else if (bfd_link_pic (info)
0018b0a3 5458 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 5459 {
6725bdbf 5460 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 5461 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
5462 }
252b5132
RH		 5463 else
5464 {
dd5724d5 5465 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 5466do_glob_dat:
6725bdbf 5467 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 5468 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 5469 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
5470 }
5471
59d6ffb2 5472 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 5473 }
5474
f5385ebf 5475 if (h->needs_copy)
252b5132 5476 {
947216bf 5477 Elf_Internal_Rela rel;
252b5132
RH		 5478
5479 /* This symbol needs a copy reloc. Set it up. */
5480
ffb2e45b
AM		 5481 if (h->dynindx == -1
5482 || (h->root.type != bfd_link_hash_defined
5483 && h->root.type != bfd_link_hash_defweak)
5484 || htab->srelbss == NULL)
5485 abort ();
252b5132
RH		 5486
5487 rel.r_offset = (h->root.u.def.value
5488 + h->root.u.def.section->output_section->vma
5489 + h->root.u.def.section->output_offset);
5490 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 5491 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 5492 }
5493
b34976b6 5494 return TRUE;
252b5132
RH		 5495}
5496
c25bc9fc
L		 5497/* Finish up local dynamic symbol handling. We set the contents of
5498 various dynamic sections here. */
5499
5500static bfd_boolean
5501elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
5502{
5503 struct elf_link_hash_entry *h
5504 = (struct elf_link_hash_entry *) *slot;
5505 struct bfd_link_info *info
23209a78 5506 = (struct bfd_link_info *) inf;
c25bc9fc
L		 5507
5508 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
5509 h, NULL);
5510}
5511
aec6b87e
L		 5512/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
5513 here since undefined weak symbol may not be dynamic and may not be
5514 called for elf_i386_finish_dynamic_symbol. */
5515
5516static bfd_boolean
5517elf_i386_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
5518 void *inf)
5519{
5520 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
5521 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5522
5523 if (h->root.type != bfd_link_hash_undefweak
5524 || h->dynindx != -1)
5525 return TRUE;
5526
5527 return elf_i386_finish_dynamic_symbol (info->output_bfd,
5528 info, h, NULL);
5529}
5530
38701953
AM		 5531/* Used to decide how to sort relocs in an optimal manner for the
5532 dynamic linker, before writing them out. */
5533
5534static enum elf_reloc_type_class
cae1fbbb 5535elf_i386_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 5536 const asection *rel_sec ATTRIBUTE_UNUSED,
5537 const Elf_Internal_Rela *rela)
38701953 5538{
cae1fbbb
L		 5539 bfd *abfd = info->output_bfd;
5540 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
5541 struct elf_link_hash_table *htab = elf_hash_table (info);
cae1fbbb 5542
d9e3b590
L		 5543 if (htab->dynsym != NULL
5544 && htab->dynsym->contents != NULL)
5545 {
5546 /* Check relocation against STT_GNU_IFUNC symbol if there are
5547 dynamic symbols. */
5548 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
5549 Elf_Internal_Sym sym;
5550 if (!bed->s->swap_symbol_in (abfd,
5551 (htab->dynsym->contents
5552 + r_symndx * sizeof (Elf32_External_Sym)),
5553 0, &sym))
5554 abort ();
5555
5556 if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
5557 return reloc_class_ifunc;
5558 }
cae1fbbb 5559
55fd94b0 5560 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 5561 {
5562 case R_386_RELATIVE:
5563 return reloc_class_relative;
5564 case R_386_JUMP_SLOT:
5565 return reloc_class_plt;
5566 case R_386_COPY:
5567 return reloc_class_copy;
5568 default:
5569 return reloc_class_normal;
5570 }
5571}
5572
252b5132
RH		 5573/* Finish up the dynamic sections. */
5574
b34976b6 5575static bfd_boolean
55fd94b0
AM		 5576elf_i386_finish_dynamic_sections (bfd *output_bfd,
5577 struct bfd_link_info *info)
252b5132 5578{
6725bdbf 5579 struct elf_i386_link_hash_table *htab;
252b5132 5580 bfd *dynobj;
252b5132 5581 asection *sdyn;
25e762b9 5582 const struct elf_i386_backend_data *abed;
252b5132 5583
6725bdbf 5584 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5585 if (htab == NULL)
5586 return FALSE;
5587
ebe50bae 5588 dynobj = htab->elf.dynobj;
3d4d4302 5589 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 5590 abed = get_elf_i386_backend_data (output_bfd);
252b5132 5591
ebe50bae 5592 if (htab->elf.dynamic_sections_created)
252b5132 5593 {
252b5132
RH		 5594 Elf32_External_Dyn *dyncon, *dynconend;
5595
6de2ae4a 5596 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 5597 abort ();
252b5132
RH		 5598
5599 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 5600 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 5601 for (; dyncon < dynconend; dyncon++)
5602 {
5603 Elf_Internal_Dyn dyn;
51b64d56 5604 asection *s;
252b5132
RH		 5605
5606 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5607
5608 switch (dyn.d_tag)
5609 {
5610 default:
25e762b9
RM		 5611 if (abed->is_vxworks
5612 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 5613 break;
0ac8d2ca 5614 continue;
252b5132
RH		 5615
5616 case DT_PLTGOT:
6de2ae4a 5617 s = htab->elf.sgotplt;
8c37241b 5618 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 5619 break;
5620
252b5132 5621 case DT_JMPREL:
6de2ae4a 5622 s = htab->elf.srelplt;
6348e046 5623 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 5624 break;
5625
5626 case DT_PLTRELSZ:
6de2ae4a 5627 s = htab->elf.srelplt;
eea6121a 5628 dyn.d_un.d_val = s->size;
252b5132
RH		 5629 break;
5630
5631 case DT_RELSZ:
5632 /* My reading of the SVR4 ABI indicates that the
5633 procedure linkage table relocs (DT_JMPREL) should be
5634 included in the overall relocs (DT_REL). This is
5635 what Solaris does. However, UnixWare can not handle
5636 that case. Therefore, we override the DT_RELSZ entry
6348e046 5637 here to make it not include the JMPREL relocs. */
6de2ae4a 5638 s = htab->elf.srelplt;
6348e046
AM		 5639 if (s == NULL)
5640 continue;
eea6121a 5641 dyn.d_un.d_val -= s->size;
6348e046
AM		 5642 break;
5643
5644 case DT_REL:
5645 /* We may not be using the standard ELF linker script.
5646 If .rel.plt is the first .rel section, we adjust
5647 DT_REL to not include it. */
6de2ae4a 5648 s = htab->elf.srelplt;
6348e046
AM		 5649 if (s == NULL)
5650 continue;
5651 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
5652 continue;
eea6121a 5653 dyn.d_un.d_ptr += s->size;
252b5132
RH		 5654 break;
5655 }
0ac8d2ca
AM		 5656
5657 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 5658 }
5659
5660 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 5661 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132 5662 {
0e1862bb 5663 if (bfd_link_pic (info))
eac338cf 5664 {
25e762b9
RM		 5665 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
5666 abed->plt->plt0_entry_size);
5667 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5668 abed->plt0_pad_byte,
5669 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 5670 }
252b5132
RH		 5671 else
5672 {
25e762b9
RM		 5673 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
5674 abed->plt->plt0_entry_size);
5675 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5676 abed->plt0_pad_byte,
5677 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 5678 bfd_put_32 (output_bfd,
6de2ae4a
L		 5679 (htab->elf.sgotplt->output_section->vma
5680 + htab->elf.sgotplt->output_offset
6725bdbf 5681 + 4),
25e762b9
RM		 5682 htab->elf.splt->contents
5683 + abed->plt->plt0_got1_offset);
252b5132 5684 bfd_put_32 (output_bfd,
6de2ae4a
L		 5685 (htab->elf.sgotplt->output_section->vma
5686 + htab->elf.sgotplt->output_offset
6725bdbf 5687 + 8),
25e762b9
RM		 5688 htab->elf.splt->contents
5689 + abed->plt->plt0_got2_offset);
eac338cf 5690
25e762b9 5691 if (abed->is_vxworks)
eac338cf
PB		 5692 {
5693 Elf_Internal_Rela rel;
7325306f 5694
eac338cf
PB		 5695 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
5696 On IA32 we use REL relocations so the addend goes in
5697 the PLT directly. */
6de2ae4a
L		 5698 rel.r_offset = (htab->elf.splt->output_section->vma
5699 + htab->elf.splt->output_offset
25e762b9 5700 + abed->plt->plt0_got1_offset);
7325306f 5701 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5702 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5703 htab->srelplt2->contents);
5704 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 5705 rel.r_offset = (htab->elf.splt->output_section->vma
5706 + htab->elf.splt->output_offset
25e762b9 5707 + abed->plt->plt0_got2_offset);
7325306f 5708 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5709 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5710 htab->srelplt2->contents +
5711 sizeof (Elf32_External_Rel));
5712 }
252b5132
RH		 5713 }
5714
5715 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5716 really seem like the right value. */
6de2ae4a 5717 elf_section_data (htab->elf.splt->output_section)
6725bdbf 5718 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 5719
5720 /* Correct the .rel.plt.unloaded relocations. */
0e1862bb 5721 if (abed->is_vxworks && !bfd_link_pic (info))
eac338cf 5722 {
25e762b9
RM		 5723 int num_plts = (htab->elf.splt->size
5724 / abed->plt->plt_entry_size) - 1;
4c9b0de6 5725 unsigned char *p;
eac338cf
PB		 5726
5727 p = htab->srelplt2->contents;
0e1862bb 5728 if (bfd_link_pic (info))
eac338cf
PB		 5729 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5730 else
5731 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5732
5733 for (; num_plts; num_plts--)
5734 {
5735 Elf_Internal_Rela rel;
5736 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5737 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5738 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5739 p += sizeof (Elf32_External_Rel);
5740
5741 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5742 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 5743 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5744 p += sizeof (Elf32_External_Rel);
5745 }
5746 }
252b5132
RH		 5747 }
5748 }
5749
6de2ae4a 5750 if (htab->elf.sgotplt)
252b5132 5751 {
56d4289c
L		 5752 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5753 {
5754 (*_bfd_error_handler)
5755 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5756 return FALSE;
5757 }
5758
12d0ee4a 5759 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5760 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 5761 {
5762 bfd_put_32 (output_bfd,
55fd94b0 5763 (sdyn == NULL ? 0
12d0ee4a 5764 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 5765 htab->elf.sgotplt->contents);
5766 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5767 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 5768 }
252b5132 5769
6de2ae4a 5770 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5771 }
8c37241b 5772
e41b3a13 5773 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5774 if (htab->plt_eh_frame != NULL
5775 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5776 {
5777 if (htab->elf.splt != NULL
5778 && htab->elf.splt->size != 0
5779 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5780 && htab->elf.splt->output_section != NULL
5781 && htab->plt_eh_frame->output_section != NULL)
5782 {
5783 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5784 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5785 + htab->plt_eh_frame->output_offset
5786 + PLT_FDE_START_OFFSET;
5787 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5788 htab->plt_eh_frame->contents
5789 + PLT_FDE_START_OFFSET);
5790 }
5791 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5792 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5793 {
5794 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5795 htab->plt_eh_frame,
5796 htab->plt_eh_frame->contents))
5797 return FALSE;
5798 }
5799 }
5800
6de2ae4a
L		 5801 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5802 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5803
c25bc9fc
L		 5804 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5805 htab_traverse (htab->loc_hash_table,
5806 elf_i386_finish_local_dynamic_symbol,
5807 info);
5808
aec6b87e
L		 5809 /* Fill PLT entries for undefined weak symbols in PIE. */
5810 if (bfd_link_pie (info))
5811 bfd_hash_traverse (&info->hash->table,
5812 elf_i386_pie_finish_undefweak_symbol,
5813 info);
5814
b34976b6 5815 return TRUE;
252b5132
RH		 5816}
5817
3972882e 5818/* Return an array of PLT entry symbol values. */
4c45e5c9 5819
3972882e
L		 5820static bfd_vma *
5821elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5822 asection *relplt)
4c45e5c9 5823{
3972882e
L		 5824 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5825 arelent *p;
5826 long count, i;
5827 bfd_vma *plt_sym_val;
144bed8d 5828 bfd_vma plt_offset;
3972882e
L		 5829 bfd_byte *plt_contents;
5830 const struct elf_i386_backend_data *bed
5831 = get_elf_i386_backend_data (abfd);
5832 Elf_Internal_Shdr *hdr;
5833
5834 /* Get the .plt section contents. */
5835 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5836 if (plt_contents == NULL)
5837 return NULL;
5838 if (!bfd_get_section_contents (abfd, (asection *) plt,
5839 plt_contents, 0, plt->size))
5840 {
5841bad_return:
5842 free (plt_contents);
5843 return NULL;
5844 }
144bed8d 5845
3972882e
L		 5846 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5847 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5848 goto bad_return;
144bed8d 5849
3972882e
L		 5850 hdr = &elf_section_data (relplt)->this_hdr;
5851 count = relplt->size / hdr->sh_entsize;
5852
5853 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5854 if (plt_sym_val == NULL)
5855 goto bad_return;
cca5b8b6 5856
35181b3e 5857 for (i = 0; i < count; i++)
3972882e 5858 plt_sym_val[i] = -1;
cca5b8b6 5859
3972882e
L		 5860 plt_offset = bed->plt->plt_entry_size;
5861 p = relplt->relocation;
5862 for (i = 0; i < count; i++, p++)
144bed8d 5863 {
3972882e
L		 5864 long reloc_index;
5865
6f25f223 5866 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
533d0af0 5867 if (p->howto == NULL)
6f25f223 5868 continue;
533d0af0
L		 5869
5870 if (p->howto->type != R_386_JUMP_SLOT
5871 && p->howto->type != R_386_IRELATIVE)
3972882e
L		 5872 continue;
5873
5874 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
5875 + bed->plt->plt_reloc_offset));
5876 reloc_index /= sizeof (Elf32_External_Rel);
ec1f73bb
AM		 5877 if (reloc_index < count)
5878 plt_sym_val[reloc_index] = plt->vma + plt_offset;
5879
144bed8d 5880 plt_offset += bed->plt->plt_entry_size;
fca6ae69
L		 5881
5882 /* PR binutils/18437: Skip extra relocations in the .rel.plt
5883 section. */
5884 if (plt_offset >= plt->size)
5885 break;
144bed8d
L		 5886 }
5887
3972882e
L		 5888 free (plt_contents);
5889
5890 return plt_sym_val;
5891}
5892
5893/* Similar to _bfd_elf_get_synthetic_symtab. */
5894
5895static long
5896elf_i386_get_synthetic_symtab (bfd *abfd,
5897 long symcount,
5898 asymbol **syms,
5899 long dynsymcount,
5900 asymbol **dynsyms,
5901 asymbol **ret)
5902{
5903 asection *plt = bfd_get_section_by_name (abfd, ".plt");
5904 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
5905 dynsymcount, dynsyms, ret,
5906 plt,
5907 elf_i386_get_plt_sym_val);
4c45e5c9
JJ		 5908}
5909
fdc90cb4
JJ		 5910/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5911
5912static bfd_boolean
5913elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5914{
5915 if (h->plt.offset != (bfd_vma) -1
5916 && !h->def_regular
5917 && !h->pointer_equality_needed)
5918 return FALSE;
5919
5920 return _bfd_elf_hash_symbol (h);
5921}
4c45e5c9 5922
d8045f23
NC		 5923/* Hook called by the linker routine which adds symbols from an object
5924 file. */
5925
5926static bfd_boolean
c16153ae 5927elf_i386_add_symbol_hook (bfd * abfd,
f1885d1e 5928 struct bfd_link_info * info,
d8045f23
NC		 5929 Elf_Internal_Sym * sym,
5930 const char ** namep ATTRIBUTE_UNUSED,
5931 flagword * flagsp ATTRIBUTE_UNUSED,
5932 asection ** secp ATTRIBUTE_UNUSED,
5933 bfd_vma * valp ATTRIBUTE_UNUSED)
5934{
13a2df29 5935 if (ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE
f1885d1e
AM		 5936 && (abfd->flags & DYNAMIC) == 0
5937 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
13a2df29
L		 5938 elf_tdata (info->output_bfd)->has_gnu_symbols
5939 |= elf_gnu_symbol_unique;
d8045f23
NC		 5940
5941 return TRUE;
5942}
5943
6d00b590 5944#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 5945#define TARGET_LITTLE_NAME "elf32-i386"
5946#define ELF_ARCH bfd_arch_i386
ae95ffa6 5947#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5948#define ELF_MACHINE_CODE EM_386
5949#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5950
5951#define elf_backend_can_gc_sections 1
51b64d56 5952#define elf_backend_can_refcount 1
252b5132
RH		 5953#define elf_backend_want_got_plt 1
5954#define elf_backend_plt_readonly 1
5955#define elf_backend_want_plt_sym 0
5956#define elf_backend_got_header_size 12
e41b3a13 5957#define elf_backend_plt_alignment 4
f7483970 5958#define elf_backend_extern_protected_data 1
252b5132 5959
8c29f035
AM		 5960/* Support RELA for objdump of prelink objects. */
5961#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5962#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5963
13ae64f3 5964#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5965
dd5724d5
AM		 5966#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5967#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
5968#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5969#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 5970#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5
AM		 5971
5972#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5973#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5974#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5975#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5976#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5977#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5978#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5979#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5980#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5981#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5982#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5983#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5984#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5985#define elf_backend_relocate_section elf_i386_relocate_section
5986#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5987#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5988#define elf_backend_omit_section_dynsym \
5989 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
fdc90cb4 5990#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23 5991#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
aec6b87e 5992#define elf_backend_fixup_symbol elf_i386_fixup_symbol
dd5724d5 5993
252b5132 5994#include "elf32-target.h"
2bc3c89a
AM		 5995
5996/* FreeBSD support. */
5997
5998#undef TARGET_LITTLE_SYM
6d00b590 5999#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 6000#undef TARGET_LITTLE_NAME
6001#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 6002#undef ELF_OSABI
6003#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 6004
6005/* The kernel recognizes executables as valid only if they carry a
6006 "FreeBSD" label in the ELF header. So we put this label on all
6007 executables and (for simplicity) also all other object files. */
6008
2bc3c89a 6009static void
d8045f23 6010elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 6011{
78245035 6012 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 6013
2bc3c89a 6014#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 6015 {
6016 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
6017 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
6018 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
6019 }
caf47ea6 6020#endif
2bc3c89a
AM		 6021}
6022
6023#undef elf_backend_post_process_headers
d8045f23 6024#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 6025#undef elf32_bed
6026#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 6027
d8045f23
NC		 6028#undef elf_backend_add_symbol_hook
6029
2bc3c89a 6030#include "elf32-target.h"
eac338cf 6031
a6cc6b3b
RO		 6032/* Solaris 2. */
6033
6034#undef TARGET_LITTLE_SYM
6d00b590 6035#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 6036#undef TARGET_LITTLE_NAME
6037#define TARGET_LITTLE_NAME "elf32-i386-sol2"
6038
914082d1
L		 6039#undef elf_backend_post_process_headers
6040
a6cc6b3b
RO		 6041/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
6042 objects won't be recognized. */
6043#undef ELF_OSABI
6044
6045#undef elf32_bed
6046#define elf32_bed elf32_i386_sol2_bed
6047
7dc98aea
RO		 6048/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
6049 boundary. */
6050#undef elf_backend_static_tls_alignment
6051#define elf_backend_static_tls_alignment 8
6052
a6cc6b3b
RO		 6053/* The Solaris 2 ABI requires a plt symbol on all platforms.
6054
6055 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
6056 File, p.63. */
6057#undef elf_backend_want_plt_sym
6058#define elf_backend_want_plt_sym 1
6059
6060#include "elf32-target.h"
6061
bf64a951
L		 6062/* Intel MCU support. */
6063
6064static bfd_boolean
6065elf32_iamcu_elf_object_p (bfd *abfd)
6066{
6067 /* Set the right machine number for an IAMCU elf32 file. */
6068 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
6069 return TRUE;
6070}
6071
6072#undef TARGET_LITTLE_SYM
6073#define TARGET_LITTLE_SYM iamcu_elf32_vec
6074#undef TARGET_LITTLE_NAME
6075#define TARGET_LITTLE_NAME "elf32-iamcu"
6076#undef ELF_ARCH
6077#define ELF_ARCH bfd_arch_iamcu
6078
6079#undef ELF_MACHINE_CODE
6080#define ELF_MACHINE_CODE EM_IAMCU
6081
6082#undef ELF_OSABI
6083
6084#undef elf32_bed
6085#define elf32_bed elf32_iamcu_bed
6086
6087#undef elf_backend_object_p
6088#define elf_backend_object_p elf32_iamcu_elf_object_p
6089
6090#undef elf_backend_static_tls_alignment
6091
6092#undef elf_backend_want_plt_sym
6093#define elf_backend_want_plt_sym 0
6094
6095#include "elf32-target.h"
6096
6097/* Restore defaults. */
6098#undef ELF_ARCH
6099#define ELF_ARCH bfd_arch_i386
6100#undef ELF_MACHINE_CODE
6101#define ELF_MACHINE_CODE EM_386
6102
a27e4371
RM		 6103/* Native Client support. */
6104
6105#undef TARGET_LITTLE_SYM
6d00b590 6106#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 6107#undef TARGET_LITTLE_NAME
6108#define TARGET_LITTLE_NAME "elf32-i386-nacl"
6109#undef elf32_bed
6110#define elf32_bed elf32_i386_nacl_bed
6111
6112#undef ELF_MAXPAGESIZE
6113#define ELF_MAXPAGESIZE 0x10000
6114
6115/* Restore defaults. */
6116#undef ELF_OSABI
6117#undef elf_backend_want_plt_sym
6118#define elf_backend_want_plt_sym 0
6119#undef elf_backend_post_process_headers
a27e4371
RM		 6120#undef elf_backend_static_tls_alignment
6121
6122/* NaCl uses substantially different PLT entries for the same effects. */
6123
6124#undef elf_backend_plt_alignment
6125#define elf_backend_plt_alignment 5
6126#define NACL_PLT_ENTRY_SIZE 64
6127#define NACLMASK 0xe0 /* 32-byte alignment mask. */
6128
6129static const bfd_byte elf_i386_nacl_plt0_entry[] =
6130 {
6131 0xff, 0x35, /* pushl contents of address */
6132 0, 0, 0, 0, /* replaced with address of .got + 4. */
6133 0x8b, 0x0d, /* movl contents of address, %ecx */
6134 0, 0, 0, 0, /* replaced with address of .got + 8. */
6135 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
6136 0xff, 0xe1 /* jmp *%ecx */
6137 };
6138
6139static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
6140 {
6141 0x8b, 0x0d, /* movl contents of address, %ecx */
6142 0, 0, 0, 0, /* replaced with GOT slot address. */
6143 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
6144 0xff, 0xe1, /* jmp *%ecx */
6145
6146 /* Pad to the next 32-byte boundary with nop instructions. */
6147 0x90,
6148 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6149 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6150
6151 /* Lazy GOT entries point here (32-byte aligned). */
6152 0x68, /* pushl immediate */
6153 0, 0, 0, 0, /* replaced with reloc offset. */
6154 0xe9, /* jmp relative */
6155 0, 0, 0, 0, /* replaced with offset to .plt. */
6156
6157 /* Pad to the next 32-byte boundary with nop instructions. */
6158 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6159 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6160 0x90, 0x90
6161 };
6162
6163static const bfd_byte
6164elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
6165 {
6166 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
6167 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
6168 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
6169 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 6170
6171 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
6172 so pad to that size with nop instructions. */
6173 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 6174 };
6175
6176static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
6177 {
6178 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
6179 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
6180 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
6181 0xff, 0xe1, /* jmp *%ecx */
6182
6183 /* Pad to the next 32-byte boundary with nop instructions. */
6184 0x90,
6185 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6186 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6187
6188 /* Lazy GOT entries point here (32-byte aligned). */
6189 0x68, /* pushl immediate */
6190 0, 0, 0, 0, /* replaced with offset into relocation table. */
6191 0xe9, /* jmp relative */
6192 0, 0, 0, 0, /* replaced with offset to start of .plt. */
6193
6194 /* Pad to the next 32-byte boundary with nop instructions. */
6195 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6196 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6197 0x90, 0x90
6198 };
6199
6200static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
6201 {
6202#if (PLT_CIE_LENGTH != 20 \
6203 || PLT_FDE_LENGTH != 36 \
6204 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
6205 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
6206# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
6207#endif
6208 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
6209 0, 0, 0, 0, /* CIE ID */
6210 1, /* CIE version */
6211 'z', 'R', 0, /* Augmentation string */
6212 1, /* Code alignment factor */
6213 0x7c, /* Data alignment factor: -4 */
6214 8, /* Return address column */
6215 1, /* Augmentation size */
6216 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
6217 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
6218 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
6219 DW_CFA_nop, DW_CFA_nop,
6220
6221 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
6222 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
6223 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
6224 0, 0, 0, 0, /* .plt size goes here */
6225 0, /* Augmentation size */
6226 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
6227 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
6228 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
6229 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
6230 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
6231 13, /* Block length */
6232 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
6233 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
6234 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
6235 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
6236 DW_CFA_nop, DW_CFA_nop
6237 };
6238
6239static const struct elf_i386_plt_layout elf_i386_nacl_plt =
6240 {
6241 elf_i386_nacl_plt0_entry, /* plt0_entry */
6242 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
6243 2, /* plt0_got1_offset */
6244 8, /* plt0_got2_offset */
6245 elf_i386_nacl_plt_entry, /* plt_entry */
6246 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
6247 2, /* plt_got_offset */
6248 33, /* plt_reloc_offset */
6249 38, /* plt_plt_offset */
6250 32, /* plt_lazy_offset */
6251 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
6252 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
6253 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
6254 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
6255 };
6256
6257static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
6258 {
6259 &elf_i386_nacl_plt, /* plt */
6260 0x90, /* plt0_pad_byte: nop insn */
6261 0, /* is_vxworks */
6262 };
6263
64b384e1
RM		 6264static bfd_boolean
6265elf32_i386_nacl_elf_object_p (bfd *abfd)
6266{
6267 /* Set the right machine number for a NaCl i386 ELF32 file. */
6268 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
6269 return TRUE;
6270}
6271
a27e4371
RM		 6272#undef elf_backend_arch_data
6273#define elf_backend_arch_data &elf_i386_nacl_arch_bed
6274
64b384e1
RM		 6275#undef elf_backend_object_p
6276#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 6277#undef elf_backend_modify_segment_map
6278#define elf_backend_modify_segment_map nacl_modify_segment_map
6279#undef elf_backend_modify_program_headers
6280#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 6281#undef elf_backend_final_write_processing
6282#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 6283
a27e4371
RM		 6284#include "elf32-target.h"
6285
5a68afcf 6286/* Restore defaults. */
64b384e1 6287#undef elf_backend_object_p
5a68afcf
RM		 6288#undef elf_backend_modify_segment_map
6289#undef elf_backend_modify_program_headers
887badb3 6290#undef elf_backend_final_write_processing
5a68afcf 6291
eac338cf
PB		 6292/* VxWorks support. */
6293
6294#undef TARGET_LITTLE_SYM
6d00b590 6295#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 6296#undef TARGET_LITTLE_NAME
6297#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 6298#undef ELF_OSABI
a27e4371
RM		 6299#undef elf_backend_plt_alignment
6300#define elf_backend_plt_alignment 4
eac338cf 6301
23209a78
RM		 6302static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
6303 {
25e762b9 6304 &elf_i386_plt, /* plt */
23209a78
RM		 6305 0x90, /* plt0_pad_byte */
6306 1, /* is_vxworks */
6307 };
eac338cf 6308
23209a78
RM		 6309#undef elf_backend_arch_data
6310#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 6311
13285a1b 6312#undef elf_backend_relocs_compatible
eac338cf
PB		 6313#undef elf_backend_add_symbol_hook
6314#define elf_backend_add_symbol_hook \
6315 elf_vxworks_add_symbol_hook
6316#undef elf_backend_link_output_symbol_hook
6317#define elf_backend_link_output_symbol_hook \
9c72ff84 6318 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 6319#undef elf_backend_emit_relocs
6320#define elf_backend_emit_relocs elf_vxworks_emit_relocs
6321#undef elf_backend_final_write_processing
6322#define elf_backend_final_write_processing \
6323 elf_vxworks_final_write_processing
7dc98aea 6324#undef elf_backend_static_tls_alignment
eac338cf
PB		 6325
6326/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
6327 define it. */
6328#undef elf_backend_want_plt_sym
6329#define elf_backend_want_plt_sym 1
6330
6331#undef elf32_bed
6332#define elf32_bed elf32_i386_vxworks_bed
6333
6334#include "elf32-target.h"
GDB Binutils - Deliverables
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