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Add R_X86_64_[REX_]GOTPCRELX support to gas and ld
[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
b90efa5b 2 Copyright (C) 1993-2015 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
252b5132
RH		 740/* i386 ELF linker hash entry. */
741
742struct elf_i386_link_hash_entry
743{
ebe50bae 744 struct elf_link_hash_entry elf;
252b5132 745
0c715baa 746 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 747 struct elf_dyn_relocs *dyn_relocs;
13ae64f3 748
37e55690
JJ		 749#define GOT_UNKNOWN 0
750#define GOT_NORMAL 1
751#define GOT_TLS_GD 2
752#define GOT_TLS_IE 4
753#define GOT_TLS_IE_POS 5
754#define GOT_TLS_IE_NEG 6
755#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO		 756#define GOT_TLS_GDESC 8
757#define GOT_TLS_GD_BOTH_P(type) \
758 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
759#define GOT_TLS_GD_P(type) \
760 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
761#define GOT_TLS_GDESC_P(type) \
762 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
763#define GOT_TLS_GD_ANY_P(type) \
764 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 765 unsigned char tls_type;
67a4f2b7 766
d5597ebc
L		 767 /* Symbol is referenced by R_386_GOTOFF relocation. */
768 unsigned int gotoff_ref : 1;
769
04ebc307
L		 770 /* Reference count of C/C++ function pointer relocations in read-write
771 section which can be resolved at run-time. */
772 bfd_signed_vma func_pointer_refcount;
773
dd7e64d4
L		 774 /* Information about the GOT PLT entry. Filled when there are both
775 GOT and PLT relocations against the same function. */
776 union gotplt_union plt_got;
777
67a4f2b7
AO		 778 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
779 starting at the end of the jump table. */
780 bfd_vma tlsdesc_got;
13ae64f3
JJ		 781};
782
783#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
784
785struct elf_i386_obj_tdata
786{
787 struct elf_obj_tdata root;
788
789 /* tls_type for each local got entry. */
790 char *local_got_tls_type;
67a4f2b7
AO		 791
792 /* GOTPLT entries for TLS descriptors. */
793 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 794};
795
13ae64f3
JJ		 796#define elf_i386_tdata(abfd) \
797 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
798
799#define elf_i386_local_got_tls_type(abfd) \
800 (elf_i386_tdata (abfd)->local_got_tls_type)
801
67a4f2b7
AO		 802#define elf_i386_local_tlsdesc_gotent(abfd) \
803 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
804
0ffa91dd
NC		 805#define is_i386_elf(bfd) \
806 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
807 && elf_tdata (bfd) != NULL \
4dfe6ac6 808 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 809
b34976b6 810static bfd_boolean
55fd94b0 811elf_i386_mkobject (bfd *abfd)
13ae64f3 812{
0ffa91dd 813 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 814 I386_ELF_DATA);
13ae64f3 815}
cedb70c5 816
252b5132
RH		 817/* i386 ELF linker hash table. */
818
819struct elf_i386_link_hash_table
820{
ebe50bae 821 struct elf_link_hash_table elf;
252b5132 822
6725bdbf 823 /* Short-cuts to get to dynamic linker sections. */
6725bdbf
AM		 824 asection *sdynbss;
825 asection *srelbss;
e41b3a13 826 asection *plt_eh_frame;
dd7e64d4 827 asection *plt_got;
9635fe29 828
4dfe6ac6
NC		 829 union
830 {
13ae64f3
JJ		 831 bfd_signed_vma refcount;
832 bfd_vma offset;
833 } tls_ldm_got;
834
67a4f2b7
AO		 835 /* The amount of space used by the reserved portion of the sgotplt
836 section, plus whatever space is used by the jump slots. */
837 bfd_vma sgotplt_jump_table_size;
838
87d72d41
AM		 839 /* Small local sym cache. */
840 struct sym_cache sym_cache;
9f03412a
AO		 841
842 /* _TLS_MODULE_BASE_ symbol. */
843 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 844
845 /* Used by local STT_GNU_IFUNC symbols. */
846 htab_t loc_hash_table;
4dfe6ac6
NC		 847 void * loc_hash_memory;
848
849 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
850 asection *srelplt2;
851
4dfe6ac6
NC		 852 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
853 bfd_vma next_tls_desc_index;
e1f98742
L		 854
855 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
856 bfd_vma next_jump_slot_index;
857
858 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
859 bfd_vma next_irelative_index;
6725bdbf 860};
252b5132
RH		 861
862/* Get the i386 ELF linker hash table from a link_info structure. */
863
864#define elf_i386_hash_table(p) \
4dfe6ac6
NC		 865 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
866 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 867
67a4f2b7 868#define elf_i386_compute_jump_table_size(htab) \
998d811a 869 ((htab)->elf.srelplt->reloc_count * 4)
67a4f2b7 870
252b5132
RH		 871/* Create an entry in an i386 ELF linker hash table. */
872
873static struct bfd_hash_entry *
eb4ff4d6
L		 874elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
875 struct bfd_hash_table *table,
876 const char *string)
252b5132 877{
252b5132
RH		 878 /* Allocate the structure if it has not already been allocated by a
879 subclass. */
ebe50bae
AM		 880 if (entry == NULL)
881 {
a50b1753
NC		 882 entry = (struct bfd_hash_entry *)
883 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM		 884 if (entry == NULL)
885 return entry;
886 }
252b5132
RH		 887
888 /* Call the allocation method of the superclass. */
ebe50bae
AM		 889 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
890 if (entry != NULL)
252b5132 891 {
ebe50bae
AM		 892 struct elf_i386_link_hash_entry *eh;
893
894 eh = (struct elf_i386_link_hash_entry *) entry;
895 eh->dyn_relocs = NULL;
13ae64f3 896 eh->tls_type = GOT_UNKNOWN;
d5597ebc 897 eh->gotoff_ref = 0;
04ebc307 898 eh->func_pointer_refcount = 0;
dd7e64d4 899 eh->plt_got.offset = (bfd_vma) -1;
67a4f2b7 900 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 901 }
902
ebe50bae 903 return entry;
252b5132
RH		 904}
905
c25bc9fc
L		 906/* Compute a hash of a local hash entry. We use elf_link_hash_entry
907 for local symbol so that we can handle local STT_GNU_IFUNC symbols
908 as global symbol. We reuse indx and dynstr_index for local symbol
909 hash since they aren't used by global symbols in this backend. */
910
911static hashval_t
912elf_i386_local_htab_hash (const void *ptr)
913{
914 struct elf_link_hash_entry *h
915 = (struct elf_link_hash_entry *) ptr;
d2149d72 916 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 917}
918
919/* Compare local hash entries. */
920
921static int
922elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
923{
924 struct elf_link_hash_entry *h1
925 = (struct elf_link_hash_entry *) ptr1;
926 struct elf_link_hash_entry *h2
927 = (struct elf_link_hash_entry *) ptr2;
928
929 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
930}
931
932/* Find and/or create a hash entry for local symbol. */
933
934static struct elf_link_hash_entry *
935elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
936 bfd *abfd, const Elf_Internal_Rela *rel,
937 bfd_boolean create)
938{
939 struct elf_i386_link_hash_entry e, *ret;
940 asection *sec = abfd->sections;
d2149d72
L		 941 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
942 ELF32_R_SYM (rel->r_info));
c25bc9fc
L		 943 void **slot;
944
945 e.elf.indx = sec->id;
946 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
947 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
948 create ? INSERT : NO_INSERT);
949
950 if (!slot)
951 return NULL;
952
953 if (*slot)
954 {
955 ret = (struct elf_i386_link_hash_entry *) *slot;
956 return &ret->elf;
957 }
958
959 ret = (struct elf_i386_link_hash_entry *)
960 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
961 sizeof (struct elf_i386_link_hash_entry));
962 if (ret)
963 {
964 memset (ret, 0, sizeof (*ret));
965 ret->elf.indx = sec->id;
966 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
967 ret->elf.dynindx = -1;
04ebc307 968 ret->func_pointer_refcount = 0;
dd7e64d4 969 ret->plt_got.offset = (bfd_vma) -1;
c25bc9fc
L		 970 *slot = ret;
971 }
972 return &ret->elf;
973}
974
68faa637
AM		 975/* Destroy an i386 ELF linker hash table. */
976
977static void
d495ab0d 978elf_i386_link_hash_table_free (bfd *obfd)
68faa637
AM		 979{
980 struct elf_i386_link_hash_table *htab
d495ab0d 981 = (struct elf_i386_link_hash_table *) obfd->link.hash;
68faa637
AM		 982
983 if (htab->loc_hash_table)
984 htab_delete (htab->loc_hash_table);
985 if (htab->loc_hash_memory)
986 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
d495ab0d 987 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 988}
989
252b5132
RH		 990/* Create an i386 ELF linker hash table. */
991
992static struct bfd_link_hash_table *
55fd94b0 993elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 994{
995 struct elf_i386_link_hash_table *ret;
dc810e39 996 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 997
7bf52ea2 998 ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt);
ebe50bae 999 if (ret == NULL)
252b5132
RH		 1000 return NULL;
1001
eb4ff4d6
L		 1002 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
1003 elf_i386_link_hash_newfunc,
4dfe6ac6
NC		 1004 sizeof (struct elf_i386_link_hash_entry),
1005 I386_ELF_DATA))
252b5132 1006 {
e2d34d7d 1007 free (ret);
252b5132
RH		 1008 return NULL;
1009 }
1010
c25bc9fc
L		 1011 ret->loc_hash_table = htab_try_create (1024,
1012 elf_i386_local_htab_hash,
1013 elf_i386_local_htab_eq,
1014 NULL);
1015 ret->loc_hash_memory = objalloc_create ();
1016 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1017 {
d495ab0d 1018 elf_i386_link_hash_table_free (abfd);
c25bc9fc
L		 1019 return NULL;
1020 }
d495ab0d 1021 ret->elf.root.hash_table_free = elf_i386_link_hash_table_free;
c25bc9fc 1022
ebe50bae 1023 return &ret->elf.root;
252b5132
RH		 1024}
1025
6725bdbf
AM		 1026/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
1027 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
1028 hash table. */
1029
b34976b6 1030static bfd_boolean
55fd94b0 1031elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 1032{
1033 struct elf_i386_link_hash_table *htab;
1034
6725bdbf 1035 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 1036 return FALSE;
6725bdbf 1037
6de2ae4a 1038 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1039 if (htab == NULL)
1040 return FALSE;
1041
3d4d4302 1042 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
d5597ebc 1043 if (!htab->sdynbss)
6725bdbf
AM		 1044 abort ();
1045
0e1862bb 1046 if (bfd_link_executable (info))
d5597ebc
L		 1047 {
1048 /* Always allow copy relocs for building executables. */
1049 asection *s = bfd_get_linker_section (dynobj, ".rel.bss");
1050 if (s == NULL)
1051 {
1052 const struct elf_backend_data *bed = get_elf_backend_data (dynobj);
1053 s = bfd_make_section_anyway_with_flags (dynobj,
1054 ".rel.bss",
1055 (bed->dynamic_sec_flags
1056 | SEC_READONLY));
1057 if (s == NULL
1058 || ! bfd_set_section_alignment (dynobj, s,
1059 bed->s->log_file_align))
1060 return FALSE;
1061 }
1062 htab->srelbss = s;
1063 }
1064
23209a78 1065 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L		 1066 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1067 &htab->srelplt2))
711de32c 1068 return FALSE;
eac338cf 1069
e41b3a13 1070 if (!info->no_ld_generated_unwind_info
2fe0fd06 1071 && htab->plt_eh_frame == NULL
e4de50d4 1072 && htab->elf.splt != NULL)
e41b3a13 1073 {
bbf96e4e
L		 1074 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1075 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1076 | SEC_LINKER_CREATED);
e41b3a13 1077 htab->plt_eh_frame
bbf96e4e 1078 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ		 1079 if (htab->plt_eh_frame == NULL
1080 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1081 return FALSE;
e41b3a13
JJ		 1082 }
1083
b34976b6 1084 return TRUE;
6725bdbf
AM		 1085}
1086
ebe50bae
AM		 1087/* Copy the extra info we tack onto an elf_link_hash_entry. */
1088
51b64d56 1089static void
fcfa13d2 1090elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 1091 struct elf_link_hash_entry *dir,
1092 struct elf_link_hash_entry *ind)
ebe50bae
AM		 1093{
1094 struct elf_i386_link_hash_entry *edir, *eind;
1095
1096 edir = (struct elf_i386_link_hash_entry *) dir;
1097 eind = (struct elf_i386_link_hash_entry *) ind;
1098
bbd7ec4a 1099 if (eind->dyn_relocs != NULL)
ebe50bae 1100 {
bbd7ec4a
AM		 1101 if (edir->dyn_relocs != NULL)
1102 {
e03a8ed8
L		 1103 struct elf_dyn_relocs **pp;
1104 struct elf_dyn_relocs *p;
bbd7ec4a 1105
fcfa13d2 1106 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 1107 list. Merge any entries against the same section. */
1108 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1109 {
e03a8ed8 1110 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 1111
1112 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1113 if (q->sec == p->sec)
1114 {
1115 q->pc_count += p->pc_count;
1116 q->count += p->count;
1117 *pp = p->next;
1118 break;
1119 }
1120 if (q == NULL)
1121 pp = &p->next;
1122 }
1123 *pp = edir->dyn_relocs;
1124 }
1125
ebe50bae
AM		 1126 edir->dyn_relocs = eind->dyn_relocs;
1127 eind->dyn_relocs = NULL;
1128 }
ebe50bae 1129
cd67d266
JJ		 1130 if (ind->root.type == bfd_link_hash_indirect
1131 && dir->got.refcount <= 0)
1132 {
1133 edir->tls_type = eind->tls_type;
1134 eind->tls_type = GOT_UNKNOWN;
1135 }
81848ca0 1136
d5597ebc
L		 1137 /* Copy gotoff_ref so that elf_i386_adjust_dynamic_symbol will
1138 generate a R_386_COPY reloc. */
1139 edir->gotoff_ref |= eind->gotoff_ref;
1140
81848ca0
AM		 1141 if (ELIMINATE_COPY_RELOCS
1142 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1143 && dir->dynamic_adjusted)
1144 {
1145 /* If called to transfer flags for a weakdef during processing
1146 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1147 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1148 dir->ref_dynamic |= ind->ref_dynamic;
1149 dir->ref_regular |= ind->ref_regular;
1150 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1151 dir->needs_plt |= ind->needs_plt;
1152 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1153 }
81848ca0 1154 else
04ebc307
L		 1155 {
1156 if (eind->func_pointer_refcount > 0)
1157 {
1158 edir->func_pointer_refcount += eind->func_pointer_refcount;
1159 eind->func_pointer_refcount = 0;
1160 }
1161
1162 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1163 }
ebe50bae
AM		 1164}
1165
142411ca
L		 1166/* Return TRUE if the TLS access code sequence support transition
1167 from R_TYPE. */
1168
1169static bfd_boolean
1170elf_i386_check_tls_transition (bfd *abfd, asection *sec,
1171 bfd_byte *contents,
1172 Elf_Internal_Shdr *symtab_hdr,
1173 struct elf_link_hash_entry **sym_hashes,
1174 unsigned int r_type,
1175 const Elf_Internal_Rela *rel,
1176 const Elf_Internal_Rela *relend)
13ae64f3 1177{
142411ca
L		 1178 unsigned int val, type;
1179 unsigned long r_symndx;
1180 struct elf_link_hash_entry *h;
1181 bfd_vma offset;
1182
1183 /* Get the section contents. */
1184 if (contents == NULL)
1185 {
1186 if (elf_section_data (sec)->this_hdr.contents != NULL)
1187 contents = elf_section_data (sec)->this_hdr.contents;
1188 else
1189 {
1190 /* FIXME: How to better handle error condition? */
1191 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1192 return FALSE;
13ae64f3 1193
142411ca
L		 1194 /* Cache the section contents for elf_link_input_bfd. */
1195 elf_section_data (sec)->this_hdr.contents = contents;
1196 }
1197 }
1198
1199 offset = rel->r_offset;
13ae64f3 1200 switch (r_type)
142411ca
L		 1201 {
1202 case R_386_TLS_GD:
1203 case R_386_TLS_LDM:
1204 if (offset < 2 || (rel + 1) >= relend)
1205 return FALSE;
1206
1207 type = bfd_get_8 (abfd, contents + offset - 2);
1208 if (r_type == R_386_TLS_GD)
1209 {
09e8c3bf 1210 /* Check transition from GD access model. Only
142411ca
L		 1211 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1212 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1213 can transit to different access model. */
1214 if ((offset + 10) > sec->size ||
1215 (type != 0x8d && type != 0x04))
1216 return FALSE;
1217
1218 val = bfd_get_8 (abfd, contents + offset - 1);
1219 if (type == 0x04)
1220 {
1221 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1222 if (offset < 3)
1223 return FALSE;
1224
1225 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1226 return FALSE;
1227
1228 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1229 return FALSE;
1230 }
1231 else
1232 {
1233 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1234 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1235 return FALSE;
1236
1237 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1238 return FALSE;
1239 }
1240 }
1241 else
1242 {
1243 /* Check transition from LD access model. Only
1244 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1245 can transit to different access model. */
1246 if (type != 0x8d || (offset + 9) > sec->size)
1247 return FALSE;
1248
1249 val = bfd_get_8 (abfd, contents + offset - 1);
1250 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1251 return FALSE;
1252 }
1253
1254 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1255 return FALSE;
1256
1257 r_symndx = ELF32_R_SYM (rel[1].r_info);
1258 if (r_symndx < symtab_hdr->sh_info)
1259 return FALSE;
1260
1261 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b
L		 1262 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1263 may be versioned. */
142411ca
L		 1264 return (h != NULL
1265 && h->root.root.string != NULL
1266 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1267 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
c4fb387b
L		 1268 && (strncmp (h->root.root.string, "___tls_get_addr",
1269 15) == 0));
142411ca
L		 1270
1271 case R_386_TLS_IE:
1272 /* Check transition from IE access model:
1273 movl foo@indntpoff(%rip), %eax
1274 movl foo@indntpoff(%rip), %reg
1275 addl foo@indntpoff(%rip), %reg
1276 */
1277
1278 if (offset < 1 || (offset + 4) > sec->size)
1279 return FALSE;
1280
1281 /* Check "movl foo@tpoff(%rip), %eax" first. */
1282 val = bfd_get_8 (abfd, contents + offset - 1);
1283 if (val == 0xa1)
1284 return TRUE;
1285
1286 if (offset < 2)
1287 return FALSE;
1288
1289 /* Check movl|addl foo@tpoff(%rip), %reg. */
1290 type = bfd_get_8 (abfd, contents + offset - 2);
1291 return ((type == 0x8b || type == 0x03)
1292 && (val & 0xc7) == 0x05);
1293
1294 case R_386_TLS_GOTIE:
1295 case R_386_TLS_IE_32:
1296 /* Check transition from {IE_32,GOTIE} access model:
1297 subl foo@{tpoff,gontoff}(%reg1), %reg2
1298 movl foo@{tpoff,gontoff}(%reg1), %reg2
1299 addl foo@{tpoff,gontoff}(%reg1), %reg2
1300 */
1301
1302 if (offset < 2 || (offset + 4) > sec->size)
1303 return FALSE;
1304
1305 val = bfd_get_8 (abfd, contents + offset - 1);
1306 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1307 return FALSE;
1308
1309 type = bfd_get_8 (abfd, contents + offset - 2);
1310 return type == 0x8b || type == 0x2b || type == 0x03;
1311
1312 case R_386_TLS_GOTDESC:
1313 /* Check transition from GDesc access model:
1314 leal x@tlsdesc(%ebx), %eax
1315
1316 Make sure it's a leal adding ebx to a 32-bit offset
1317 into any register, although it's probably almost always
1318 going to be eax. */
1319
1320 if (offset < 2 || (offset + 4) > sec->size)
1321 return FALSE;
1322
1323 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1324 return FALSE;
1325
1326 val = bfd_get_8 (abfd, contents + offset - 1);
1327 return (val & 0xc7) == 0x83;
1328
1329 case R_386_TLS_DESC_CALL:
1330 /* Check transition from GDesc access model:
1331 call *x@tlsdesc(%rax)
1332 */
1333 if (offset + 2 <= sec->size)
1334 {
1335 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM		 1336 static const unsigned char call[] = { 0xff, 0x10 };
1337 return memcmp (contents + offset, call, 2) == 0;
142411ca
L		 1338 }
1339
1340 return FALSE;
1341
1342 default:
1343 abort ();
1344 }
1345}
1346
1347/* Return TRUE if the TLS access transition is OK or no transition
1348 will be performed. Update R_TYPE if there is a transition. */
1349
1350static bfd_boolean
1351elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1352 asection *sec, bfd_byte *contents,
1353 Elf_Internal_Shdr *symtab_hdr,
1354 struct elf_link_hash_entry **sym_hashes,
1355 unsigned int *r_type, int tls_type,
1356 const Elf_Internal_Rela *rel,
1357 const Elf_Internal_Rela *relend,
4c544807
L		 1358 struct elf_link_hash_entry *h,
1359 unsigned long r_symndx)
142411ca
L		 1360{
1361 unsigned int from_type = *r_type;
1362 unsigned int to_type = from_type;
1363 bfd_boolean check = TRUE;
1364
bb1cb422
L		 1365 /* Skip TLS transition for functions. */
1366 if (h != NULL
1367 && (h->type == STT_FUNC
1368 || h->type == STT_GNU_IFUNC))
1369 return TRUE;
1370
142411ca 1371 switch (from_type)
13ae64f3
JJ		 1372 {
1373 case R_386_TLS_GD:
67a4f2b7
AO		 1374 case R_386_TLS_GOTDESC:
1375 case R_386_TLS_DESC_CALL:
13ae64f3 1376 case R_386_TLS_IE_32:
37e55690
JJ		 1377 case R_386_TLS_IE:
1378 case R_386_TLS_GOTIE:
0e1862bb 1379 if (bfd_link_executable (info))
142411ca
L		 1380 {
1381 if (h == NULL)
1382 to_type = R_386_TLS_LE_32;
1383 else if (from_type != R_386_TLS_IE
1384 && from_type != R_386_TLS_GOTIE)
1385 to_type = R_386_TLS_IE_32;
1386 }
1387
1388 /* When we are called from elf_i386_relocate_section, CONTENTS
1389 isn't NULL and there may be additional transitions based on
1390 TLS_TYPE. */
1391 if (contents != NULL)
1392 {
1393 unsigned int new_to_type = to_type;
1394
0e1862bb 1395 if (bfd_link_executable (info)
142411ca
L		 1396 && h != NULL
1397 && h->dynindx == -1
1398 && (tls_type & GOT_TLS_IE))
1399 new_to_type = R_386_TLS_LE_32;
1400
1401 if (to_type == R_386_TLS_GD
1402 || to_type == R_386_TLS_GOTDESC
1403 || to_type == R_386_TLS_DESC_CALL)
1404 {
1405 if (tls_type == GOT_TLS_IE_POS)
1406 new_to_type = R_386_TLS_GOTIE;
1407 else if (tls_type & GOT_TLS_IE)
1408 new_to_type = R_386_TLS_IE_32;
1409 }
1410
1411 /* We checked the transition before when we were called from
1412 elf_i386_check_relocs. We only want to check the new
1413 transition which hasn't been checked before. */
1414 check = new_to_type != to_type && from_type == to_type;
1415 to_type = new_to_type;
1416 }
1417
1418 break;
1419
13ae64f3 1420 case R_386_TLS_LDM:
0e1862bb 1421 if (bfd_link_executable (info))
142411ca
L		 1422 to_type = R_386_TLS_LE_32;
1423 break;
1424
1425 default:
1426 return TRUE;
1427 }
1428
1429 /* Return TRUE if there is no transition. */
1430 if (from_type == to_type)
1431 return TRUE;
1432
1433 /* Check if the transition can be performed. */
1434 if (check
1435 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1436 symtab_hdr, sym_hashes,
1437 from_type, rel, relend))
1438 {
2f629d23 1439 reloc_howto_type *from, *to;
4c544807 1440 const char *name;
142411ca
L		 1441
1442 from = elf_i386_rtype_to_howto (abfd, from_type);
1443 to = elf_i386_rtype_to_howto (abfd, to_type);
1444
4c544807
L		 1445 if (h)
1446 name = h->root.root.string;
1447 else
1448 {
4c544807 1449 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1450
4c544807 1451 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1452 if (htab == NULL)
1453 name = "*unknown*";
1454 else
1455 {
1456 Elf_Internal_Sym *isym;
1457
1458 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1459 abfd, r_symndx);
1460 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1461 }
4c544807
L		 1462 }
1463
142411ca
L		 1464 (*_bfd_error_handler)
1465 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1466 "in section `%A' failed"),
4c544807 1467 abfd, sec, from->name, to->name, name,
142411ca
L		 1468 (unsigned long) rel->r_offset);
1469 bfd_set_error (bfd_error_bad_value);
1470 return FALSE;
13ae64f3
JJ		 1471 }
1472
142411ca
L		 1473 *r_type = to_type;
1474 return TRUE;
13ae64f3
JJ		 1475}
1476
c1d11331
L		 1477/* Rename some of the generic section flags to better document how they
1478 are used here. */
02a86693 1479#define need_convert_load sec_flg0
c1d11331 1480
252b5132 1481/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 1482 calculate needed space in the global offset table, procedure linkage
1483 table, and dynamic reloc sections. */
252b5132 1484
b34976b6 1485static bfd_boolean
55fd94b0
AM		 1486elf_i386_check_relocs (bfd *abfd,
1487 struct bfd_link_info *info,
1488 asection *sec,
1489 const Elf_Internal_Rela *relocs)
252b5132 1490{
6725bdbf 1491 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1492 Elf_Internal_Shdr *symtab_hdr;
1493 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 1494 const Elf_Internal_Rela *rel;
1495 const Elf_Internal_Rela *rel_end;
252b5132 1496 asection *sreloc;
dd7e64d4 1497 bfd_boolean use_plt_got;
252b5132 1498
0e1862bb 1499 if (bfd_link_relocatable (info))
b34976b6 1500 return TRUE;
252b5132 1501
0ffa91dd
NC		 1502 BFD_ASSERT (is_i386_elf (abfd));
1503
6725bdbf 1504 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 1505 if (htab == NULL)
1506 return FALSE;
1507
dd7e64d4
L		 1508 use_plt_got = (!get_elf_i386_backend_data (abfd)->is_vxworks
1509 && (get_elf_i386_backend_data (abfd)
1510 == &elf_i386_arch_bed));
1511
0ffa91dd 1512 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1513 sym_hashes = elf_sym_hashes (abfd);
252b5132 1514
252b5132
RH		 1515 sreloc = NULL;
1516
1517 rel_end = relocs + sec->reloc_count;
1518 for (rel = relocs; rel < rel_end; rel++)
1519 {
13ae64f3 1520 unsigned int r_type;
252b5132
RH		 1521 unsigned long r_symndx;
1522 struct elf_link_hash_entry *h;
d5597ebc 1523 struct elf_i386_link_hash_entry *eh;
4c544807
L		 1524 Elf_Internal_Sym *isym;
1525 const char *name;
06a6a421 1526 bfd_boolean size_reloc;
252b5132
RH		 1527
1528 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1529 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1530
d9bc7a44 1531 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1532 {
d003868e
AM		 1533 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1534 abfd,
8f615d07 1535 r_symndx);
b34976b6 1536 return FALSE;
f5f31454
L		 1537 }
1538
252b5132 1539 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1540 {
1541 /* A local symbol. */
c2e61a4e
L		 1542 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1543 abfd, r_symndx);
1544 if (isym == NULL)
1545 return FALSE;
c25bc9fc
L		 1546
1547 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L		 1548 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1549 {
9fff0c39 1550 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1551 if (h == NULL)
c2e61a4e 1552 return FALSE;
6bbec505 1553
c25bc9fc
L		 1554 /* Fake a STT_GNU_IFUNC symbol. */
1555 h->type = STT_GNU_IFUNC;
1556 h->def_regular = 1;
1557 h->ref_regular = 1;
1558 h->forced_local = 1;
1559 h->root.type = bfd_link_hash_defined;
1560 }
1561 else
1562 h = NULL;
1563 }
252b5132 1564 else
71cb9464 1565 {
4c544807 1566 isym = NULL;
71cb9464
L		 1567 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1568 while (h->root.type == bfd_link_hash_indirect
1569 || h->root.type == bfd_link_hash_warning)
1570 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1571 }
cbe950e9 1572
d5597ebc 1573 eh = (struct elf_i386_link_hash_entry *) h;
c25bc9fc
L		 1574 if (h != NULL)
1575 {
cbe950e9
L		 1576 /* Create the ifunc sections for static executables. If we
1577 never see an indirect function symbol nor we are building
1578 a static executable, those sections will be empty and
1579 won't appear in output. */
1580 switch (r_type)
1581 {
1582 default:
1583 break;
1584
d5597ebc
L		 1585 case R_386_GOTOFF:
1586 eh->gotoff_ref = 1;
cbe950e9
L		 1587 case R_386_32:
1588 case R_386_PC32:
1589 case R_386_PLT32:
1590 case R_386_GOT32:
02a86693 1591 case R_386_GOT32X:
9d4057ee
AM		 1592 if (htab->elf.dynobj == NULL)
1593 htab->elf.dynobj = abfd;
1594 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1595 return FALSE;
cbe950e9
L		 1596 break;
1597 }
1598
ad1e85de
L		 1599 /* It is referenced by a non-shared object. */
1600 h->ref_regular = 1;
61315175 1601 h->root.non_ir_ref = 1;
13a2df29
L		 1602
1603 if (h->type == STT_GNU_IFUNC)
1604 elf_tdata (info->output_bfd)->has_gnu_symbols
1605 |= elf_gnu_symbol_ifunc;
71cb9464 1606 }
252b5132 1607
142411ca
L		 1608 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1609 symtab_hdr, sym_hashes,
1610 &r_type, GOT_UNKNOWN,
23209a78 1611 rel, rel_end, h, r_symndx))
c2e61a4e 1612 return FALSE;
13ae64f3
JJ		 1613
1614 switch (r_type)
252b5132 1615 {
37e55690
JJ		 1616 case R_386_TLS_LDM:
1617 htab->tls_ldm_got.refcount += 1;
1618 goto create_got;
1619
1620 case R_386_PLT32:
1621 /* This symbol requires a procedure linkage table entry. We
1622 actually build the entry in adjust_dynamic_symbol,
1623 because this might be a case of linking PIC code which is
1624 never referenced by a dynamic object, in which case we
1625 don't need to generate a procedure linkage table entry
1626 after all. */
1627
1628 /* If this is a local symbol, we resolve it directly without
1629 creating a procedure linkage table entry. */
1630 if (h == NULL)
1631 continue;
1632
f5385ebf 1633 h->needs_plt = 1;
37e55690
JJ		 1634 h->plt.refcount += 1;
1635 break;
1636
6a3e1bae 1637 case R_386_SIZE32:
06a6a421 1638 size_reloc = TRUE;
6a3e1bae
L		 1639 goto do_size;
1640
13ae64f3 1641 case R_386_TLS_IE_32:
37e55690
JJ		 1642 case R_386_TLS_IE:
1643 case R_386_TLS_GOTIE:
0e1862bb 1644 if (!bfd_link_executable (info))
13ae64f3 1645 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1646 /* Fall through */
1647
252b5132 1648 case R_386_GOT32:
02a86693 1649 case R_386_GOT32X:
13ae64f3 1650 case R_386_TLS_GD:
67a4f2b7
AO		 1651 case R_386_TLS_GOTDESC:
1652 case R_386_TLS_DESC_CALL:
252b5132 1653 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1654 {
1655 int tls_type, old_tls_type;
1656
1657 switch (r_type)
1658 {
1659 default:
02a86693
L		 1660 case R_386_GOT32:
1661 case R_386_GOT32X:
1662 tls_type = GOT_NORMAL;
1663 break;
13ae64f3 1664 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1665 case R_386_TLS_GOTDESC:
1666 case R_386_TLS_DESC_CALL:
1667 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1668 case R_386_TLS_IE_32:
1669 if (ELF32_R_TYPE (rel->r_info) == r_type)
1670 tls_type = GOT_TLS_IE_NEG;
1671 else
ebcfb3c0
JJ		 1672 /* If this is a GD->IE transition, we may use either of
1673 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1674 tls_type = GOT_TLS_IE;
1675 break;
1676 case R_386_TLS_IE:
1677 case R_386_TLS_GOTIE:
1678 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1679 }
1680
1681 if (h != NULL)
1682 {
1683 h->got.refcount += 1;
1684 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1685 }
1686 else
1687 {
1688 bfd_signed_vma *local_got_refcounts;
1689
1690 /* This is a global offset table entry for a local symbol. */
1691 local_got_refcounts = elf_local_got_refcounts (abfd);
1692 if (local_got_refcounts == NULL)
1693 {
1694 bfd_size_type size;
1695
1696 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1697 size *= (sizeof (bfd_signed_vma)
1698 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC		 1699 local_got_refcounts = (bfd_signed_vma *)
1700 bfd_zalloc (abfd, size);
13ae64f3 1701 if (local_got_refcounts == NULL)
c2e61a4e 1702 return FALSE;
13ae64f3 1703 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1704 elf_i386_local_tlsdesc_gotent (abfd)
1705 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1706 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1707 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1708 }
1709 local_got_refcounts[r_symndx] += 1;
1710 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1711 }
1712
37e55690
JJ		 1713 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1714 tls_type |= old_tls_type;
13ae64f3
JJ		 1715 /* If a TLS symbol is accessed using IE at least once,
1716 there is no point to use dynamic model for it. */
ebcfb3c0 1717 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1718 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1719 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1720 {
67a4f2b7 1721 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1722 tls_type = old_tls_type;
67a4f2b7
AO		 1723 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1724 && GOT_TLS_GD_ANY_P (tls_type))
1725 tls_type |= old_tls_type;
13ae64f3
JJ		 1726 else
1727 {
09a24cbf 1728 if (h)
4c544807
L		 1729 name = h->root.root.string;
1730 else
1731 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1732 NULL);
13ae64f3 1733 (*_bfd_error_handler)
d003868e 1734 (_("%B: `%s' accessed both as normal and "
55fd94b0 1735 "thread local symbol"),
4c544807 1736 abfd, name);
68c4a57e 1737 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1738 return FALSE;
13ae64f3
JJ		 1739 }
1740 }
1741
1742 if (old_tls_type != tls_type)
1743 {
1744 if (h != NULL)
1745 elf_i386_hash_entry (h)->tls_type = tls_type;
1746 else
1747 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1748 }
1749 }
0ac8d2ca
AM		 1750 /* Fall through */
1751
1752 case R_386_GOTOFF:
1753 case R_386_GOTPC:
13ae64f3 1754 create_got:
6de2ae4a 1755 if (htab->elf.sgot == NULL)
0ac8d2ca
AM		 1756 {
1757 if (htab->elf.dynobj == NULL)
1758 htab->elf.dynobj = abfd;
6de2ae4a 1759 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1760 return FALSE;
0ac8d2ca 1761 }
37e55690
JJ		 1762 if (r_type != R_386_TLS_IE)
1763 break;
1764 /* Fall through */
252b5132 1765
37e55690
JJ		 1766 case R_386_TLS_LE_32:
1767 case R_386_TLS_LE:
0e1862bb 1768 if (bfd_link_executable (info))
37e55690 1769 break;
bffbf940 1770 info->flags |= DF_STATIC_TLS;
b34976b6 1771 /* Fall through */
252b5132
RH		 1772
1773 case R_386_32:
1774 case R_386_PC32:
0e1862bb 1775 if (h != NULL && bfd_link_executable (info))
6725bdbf 1776 {
12d0ee4a 1777 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1778 need a copy reloc. We can't check reliably at this
1779 stage whether the section is read-only, as input
1780 sections have not yet been mapped to output sections.
1781 Tentatively set the flag for now, and correct in
1782 adjust_dynamic_symbol. */
f5385ebf 1783 h->non_got_ref = 1;
12d0ee4a
AM		 1784
1785 /* We may need a .plt entry if the function this reloc
1786 refers to is in a shared lib. */
51b64d56 1787 h->plt.refcount += 1;
4b627c18
L		 1788 if (r_type == R_386_PC32)
1789 {
1790 /* Since something like ".long foo - ." may be used
1791 as pointer, make sure that PLT is used if foo is
1792 a function defined in a shared library. */
1793 if ((sec->flags & SEC_CODE) == 0)
1794 h->pointer_equality_needed = 1;
1795 }
1796 else
04ebc307
L		 1797 {
1798 h->pointer_equality_needed = 1;
1799 /* R_386_32 can be resolved at run-time. */
1800 if (r_type == R_386_32
1801 && (sec->flags & SEC_READONLY) == 0)
1802 eh->func_pointer_refcount += 1;
1803 }
6725bdbf 1804 }
7843f00e 1805
06a6a421 1806 size_reloc = FALSE;
6a3e1bae 1807do_size:
252b5132 1808 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1809 against a global symbol, or a non PC relative reloc
1810 against a local symbol, then we need to copy the reloc
1811 into the shared library. However, if we are linking with
1812 -Bsymbolic, we do not need to copy a reloc against a
1813 global symbol which is defined in an object we are
1814 including in the link (i.e., DEF_REGULAR is set). At
1815 this point we have not seen all the input files, so it is
1816 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1817 later (it is never cleared). In case of a weak definition,
1818 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1819 a shared library. We account for that possibility below by
1f655a09
L		 1820 storing information in the relocs_copied field of the hash
1821 table entry. A similar situation occurs when creating
1822 shared libraries and symbol visibility changes render the
12d0ee4a 1823 symbol local.
56882138 1824
12d0ee4a
AM		 1825 If on the other hand, we are creating an executable, we
1826 may need to keep relocations for symbols satisfied by a
1827 dynamic library if we manage to avoid copy relocs for the
1828 symbol. */
0e1862bb 1829 if ((bfd_link_pic (info)
12d0ee4a 1830 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1831 && (r_type != R_386_PC32
12d0ee4a 1832 || (h != NULL
55255dae 1833 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1834 || h->root.type == bfd_link_hash_defweak
f5385ebf 1835 || !h->def_regular))))
a23b6845 1836 || (ELIMINATE_COPY_RELOCS
0e1862bb 1837 && !bfd_link_pic (info)
12d0ee4a
AM		 1838 && (sec->flags & SEC_ALLOC) != 0
1839 && h != NULL
12d0ee4a 1840 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1841 || !h->def_regular)))
252b5132 1842 {
e03a8ed8
L		 1843 struct elf_dyn_relocs *p;
1844 struct elf_dyn_relocs **head;
ec338859 1845
12d0ee4a
AM		 1846 /* We must copy these reloc types into the output file.
1847 Create a reloc section in dynobj and make room for
1848 this reloc. */
252b5132
RH		 1849 if (sreloc == NULL)
1850 {
0ac8d2ca
AM		 1851 if (htab->elf.dynobj == NULL)
1852 htab->elf.dynobj = abfd;
1853
83bac4b0
NC		 1854 sreloc = _bfd_elf_make_dynamic_reloc_section
1855 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1856
252b5132 1857 if (sreloc == NULL)
c2e61a4e 1858 return FALSE;
252b5132
RH		 1859 }
1860
0c715baa
AM		 1861 /* If this is a global symbol, we count the number of
1862 relocations we need for this symbol. */
1863 if (h != NULL)
252b5132 1864 {
d5597ebc 1865 head = &eh->dyn_relocs;
0c715baa
AM		 1866 }
1867 else
1868 {
ec338859
AM		 1869 /* Track dynamic relocs needed for local syms too.
1870 We really need local syms available to do this
1871 easily. Oh well. */
87d72d41 1872 void **vpp;
ec338859 1873 asection *s;
87d72d41
AM		 1874
1875 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1876 abfd, r_symndx);
1877 if (isym == NULL)
1878 return FALSE;
1879
1880 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1881 if (s == NULL)
87d72d41 1882 s = sec;
ec338859 1883
e81d3500 1884 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1885 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM		 1886 }
1887
1888 p = *head;
1889 if (p == NULL || p->sec != sec)
1890 {
1891 bfd_size_type amt = sizeof *p;
a50b1753
NC		 1892 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1893 amt);
ec338859 1894 if (p == NULL)
c2e61a4e 1895 return FALSE;
ec338859
AM		 1896 p->next = *head;
1897 *head = p;
1898 p->sec = sec;
1899 p->count = 0;
1900 p->pc_count = 0;
252b5132 1901 }
ec338859
AM		 1902
1903 p->count += 1;
06a6a421
L		 1904 /* Count size relocation as PC-relative relocation. */
1905 if (r_type == R_386_PC32 || size_reloc)
ec338859 1906 p->pc_count += 1;
252b5132 1907 }
252b5132
RH		 1908 break;
1909
1910 /* This relocation describes the C++ object vtable hierarchy.
1911 Reconstruct it for later use during GC. */
1912 case R_386_GNU_VTINHERIT:
d17e0c6e 1913 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1914 return FALSE;
252b5132
RH		 1915 break;
1916
1917 /* This relocation describes which C++ vtable entries are actually
1918 used. Record for later use during GC. */
1919 case R_386_GNU_VTENTRY:
c6aa130f
MS		 1920 BFD_ASSERT (h != NULL);
1921 if (h != NULL
1922 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c2e61a4e 1923 return FALSE;
252b5132
RH		 1924 break;
1925
1926 default:
1927 break;
1928 }
dd7e64d4
L		 1929
1930 if (use_plt_got
1931 && h != NULL
1932 && h->plt.refcount > 0
8ded2ddc
L		 1933 && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
1934 || h->got.refcount > 0)
dd7e64d4
L		 1935 && htab->plt_got == NULL)
1936 {
1937 /* Create the GOT procedure linkage table. */
1938 unsigned int plt_got_align;
1939 const struct elf_backend_data *bed;
1940
1941 bed = get_elf_backend_data (info->output_bfd);
1942 BFD_ASSERT (sizeof (elf_i386_got_plt_entry) == 8
1943 && (sizeof (elf_i386_got_plt_entry)
1944 == sizeof (elf_i386_pic_got_plt_entry)));
1945 plt_got_align = 3;
1946
1947 if (htab->elf.dynobj == NULL)
1948 htab->elf.dynobj = abfd;
1949 htab->plt_got
1950 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
1951 ".plt.got",
1952 (bed->dynamic_sec_flags
1953 | SEC_ALLOC
1954 | SEC_CODE
1955 | SEC_LOAD
1956 | SEC_READONLY));
1957 if (htab->plt_got == NULL
1958 || !bfd_set_section_alignment (htab->elf.dynobj,
1959 htab->plt_got,
1960 plt_got_align))
1961 return FALSE;
1962 }
c1d11331 1963
02a86693 1964 if ((r_type == R_386_GOT32 || r_type == R_386_GOT32X)
c1d11331 1965 && (h == NULL || h->type != STT_GNU_IFUNC))
02a86693 1966 sec->need_convert_load = 1;
252b5132
RH		 1967 }
1968
b34976b6 1969 return TRUE;
252b5132
RH		 1970}
1971
1972/* Return the section that should be marked against GC for a given
1973 relocation. */
1974
1975static asection *
55fd94b0 1976elf_i386_gc_mark_hook (asection *sec,
07adf181 1977 struct bfd_link_info *info,
55fd94b0
AM		 1978 Elf_Internal_Rela *rel,
1979 struct elf_link_hash_entry *h,
1980 Elf_Internal_Sym *sym)
252b5132
RH		 1981{
1982 if (h != NULL)
07adf181
AM		 1983 switch (ELF32_R_TYPE (rel->r_info))
1984 {
1985 case R_386_GNU_VTINHERIT:
1986 case R_386_GNU_VTENTRY:
1987 return NULL;
1988 }
1989
1990 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1991}
1992
1993/* Update the got entry reference counts for the section being removed. */
1994
b34976b6 1995static bfd_boolean
55fd94b0
AM		 1996elf_i386_gc_sweep_hook (bfd *abfd,
1997 struct bfd_link_info *info,
1998 asection *sec,
1999 const Elf_Internal_Rela *relocs)
252b5132 2000{
4dfe6ac6 2001 struct elf_i386_link_hash_table *htab;
dd5724d5
AM		 2002 Elf_Internal_Shdr *symtab_hdr;
2003 struct elf_link_hash_entry **sym_hashes;
2004 bfd_signed_vma *local_got_refcounts;
2005 const Elf_Internal_Rela *rel, *relend;
dd5724d5 2006
0e1862bb 2007 if (bfd_link_relocatable (info))
7dda2462
TG		 2008 return TRUE;
2009
4dfe6ac6
NC		 2010 htab = elf_i386_hash_table (info);
2011 if (htab == NULL)
2012 return FALSE;
2013
ec338859 2014 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 2015
0ffa91dd 2016 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM		 2017 sym_hashes = elf_sym_hashes (abfd);
2018 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 2019
2020 relend = relocs + sec->reloc_count;
2021 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 2022 {
2023 unsigned long r_symndx;
2024 unsigned int r_type;
2025 struct elf_link_hash_entry *h = NULL;
37e55690 2026
26e41594
AM		 2027 r_symndx = ELF32_R_SYM (rel->r_info);
2028 if (r_symndx >= symtab_hdr->sh_info)
2029 {
26e41594 2030 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 2031 while (h->root.type == bfd_link_hash_indirect
2032 || h->root.type == bfd_link_hash_warning)
2033 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 2034 }
bb1cb422
L		 2035 else
2036 {
2037 /* A local symbol. */
2038 Elf_Internal_Sym *isym;
2039
2040 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2041 abfd, r_symndx);
2042
2043 /* Check relocation against local STT_GNU_IFUNC symbol. */
2044 if (isym != NULL
2045 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
2046 {
2047 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
2048 if (h == NULL)
2049 abort ();
2050 }
2051 }
0c715baa 2052
3db2e7dd
L		 2053 if (h)
2054 {
2055 struct elf_i386_link_hash_entry *eh;
2056 struct elf_dyn_relocs **pp;
2057 struct elf_dyn_relocs *p;
2058
2059 eh = (struct elf_i386_link_hash_entry *) h;
2060 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2061 if (p->sec == sec)
2062 {
2063 /* Everything must go for SEC. */
2064 *pp = p->next;
2065 break;
2066 }
2067 }
2068
26e41594 2069 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L		 2070 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
2071 symtab_hdr, sym_hashes,
2072 &r_type, GOT_UNKNOWN,
23209a78 2073 rel, relend, h, r_symndx))
142411ca
L		 2074 return FALSE;
2075
26e41594
AM		 2076 switch (r_type)
2077 {
2078 case R_386_TLS_LDM:
4dfe6ac6
NC		 2079 if (htab->tls_ldm_got.refcount > 0)
2080 htab->tls_ldm_got.refcount -= 1;
26e41594 2081 break;
0c715baa 2082
26e41594 2083 case R_386_TLS_GD:
67a4f2b7
AO		 2084 case R_386_TLS_GOTDESC:
2085 case R_386_TLS_DESC_CALL:
26e41594
AM		 2086 case R_386_TLS_IE_32:
2087 case R_386_TLS_IE:
2088 case R_386_TLS_GOTIE:
2089 case R_386_GOT32:
02a86693 2090 case R_386_GOT32X:
26e41594
AM		 2091 if (h != NULL)
2092 {
2093 if (h->got.refcount > 0)
2094 h->got.refcount -= 1;
bb1cb422
L		 2095 if (h->type == STT_GNU_IFUNC)
2096 {
2097 if (h->plt.refcount > 0)
2098 h->plt.refcount -= 1;
2099 }
26e41594
AM		 2100 }
2101 else if (local_got_refcounts != NULL)
2102 {
2103 if (local_got_refcounts[r_symndx] > 0)
2104 local_got_refcounts[r_symndx] -= 1;
2105 }
2106 break;
0c715baa 2107
26e41594
AM		 2108 case R_386_32:
2109 case R_386_PC32:
1788fc08 2110 case R_386_SIZE32:
0e1862bb 2111 if (bfd_link_pic (info)
3db2e7dd 2112 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM		 2113 break;
2114 /* Fall through */
6725bdbf 2115
26e41594
AM		 2116 case R_386_PLT32:
2117 if (h != NULL)
2118 {
2119 if (h->plt.refcount > 0)
2120 h->plt.refcount -= 1;
04ebc307
L		 2121 if (r_type == R_386_32
2122 && (sec->flags & SEC_READONLY) == 0)
2123 {
2124 struct elf_i386_link_hash_entry *eh
2125 = (struct elf_i386_link_hash_entry *) h;
2126 if (eh->func_pointer_refcount > 0)
2127 eh->func_pointer_refcount -= 1;
2128 }
26e41594
AM		 2129 }
2130 break;
dd5724d5 2131
bb1cb422
L		 2132 case R_386_GOTOFF:
2133 if (h != NULL && h->type == STT_GNU_IFUNC)
2134 {
2135 if (h->got.refcount > 0)
2136 h->got.refcount -= 1;
2137 if (h->plt.refcount > 0)
2138 h->plt.refcount -= 1;
2139 }
2140 break;
2141
26e41594
AM		 2142 default:
2143 break;
2144 }
2145 }
252b5132 2146
b34976b6 2147 return TRUE;
252b5132
RH		 2148}
2149
2150/* Adjust a symbol defined by a dynamic object and referenced by a
2151 regular object. The current definition is in some section of the
2152 dynamic object, but we're not including those sections. We have to
2153 change the definition to something the rest of the link can
2154 understand. */
2155
b34976b6 2156static bfd_boolean
55fd94b0
AM		 2157elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2158 struct elf_link_hash_entry *h)
252b5132 2159{
6725bdbf 2160 struct elf_i386_link_hash_table *htab;
252b5132 2161 asection *s;
5ca5bb35
L		 2162 struct elf_i386_link_hash_entry *eh;
2163 struct elf_dyn_relocs *p;
252b5132 2164
cbe950e9
L		 2165 /* STT_GNU_IFUNC symbol must go through PLT. */
2166 if (h->type == STT_GNU_IFUNC)
2167 {
73bcf233
L		 2168 /* All local STT_GNU_IFUNC references must be treate as local
2169 calls via local PLT. */
5ca5bb35
L		 2170 if (h->ref_regular
2171 && SYMBOL_CALLS_LOCAL (info, h))
2172 {
73bcf233 2173 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2174 struct elf_dyn_relocs **pp;
2175
2176 eh = (struct elf_i386_link_hash_entry *) h;
2177 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2178 {
2179 pc_count += p->pc_count;
2180 p->count -= p->pc_count;
2181 p->pc_count = 0;
73bcf233 2182 count += p->count;
5ca5bb35
L		 2183 if (p->count == 0)
2184 *pp = p->next;
2185 else
2186 pp = &p->next;
2187 }
2188
73bcf233 2189 if (pc_count || count)
5ca5bb35
L		 2190 {
2191 h->needs_plt = 1;
5ca5bb35 2192 h->non_got_ref = 1;
a5479e5f
L		 2193 if (h->plt.refcount <= 0)
2194 h->plt.refcount = 1;
2195 else
2196 h->plt.refcount += 1;
5ca5bb35
L		 2197 }
2198 }
2199
cbe950e9
L		 2200 if (h->plt.refcount <= 0)
2201 {
2202 h->plt.offset = (bfd_vma) -1;
2203 h->needs_plt = 0;
2204 }
2205 return TRUE;
2206 }
2207
252b5132
RH		 2208 /* If this is a function, put it in the procedure linkage table. We
2209 will fill in the contents of the procedure linkage table later,
2210 when we know the address of the .got section. */
2211 if (h->type == STT_FUNC
f5385ebf 2212 || h->needs_plt)
252b5132 2213 {
6725bdbf 2214 if (h->plt.refcount <= 0
9c7a29a3
AM		 2215 || SYMBOL_CALLS_LOCAL (info, h)
2216 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2217 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2218 {
2219 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 2220 file, but the symbol was never referred to by a dynamic
2221 object, or if all references were garbage collected. In
2222 such a case, we don't actually need to build a procedure
2223 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2224 h->plt.offset = (bfd_vma) -1;
f5385ebf 2225 h->needs_plt = 0;
252b5132
RH		 2226 }
2227
b34976b6 2228 return TRUE;
252b5132 2229 }
6725bdbf
AM		 2230 else
2231 /* It's possible that we incorrectly decided a .plt reloc was
2232 needed for an R_386_PC32 reloc to a non-function sym in
2233 check_relocs. We can't decide accurately between function and
2234 non-function syms in check-relocs; Objects loaded later in
2235 the link may change h->type. So fix it now. */
bbd7ec4a 2236 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 2237
2238 /* If this is a weak symbol, and there is a real definition, the
2239 processor independent code will have arranged for us to see the
2240 real definition first, and we can just use the same value. */
f6e332e6 2241 if (h->u.weakdef != NULL)
252b5132 2242 {
f6e332e6
AM		 2243 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2244 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2245 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2246 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2247 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2248 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2249 return TRUE;
252b5132
RH		 2250 }
2251
2252 /* This is a reference to a symbol defined by a dynamic object which
2253 is not a function. */
2254
2255 /* If we are creating a shared library, we must presume that the
2256 only references to the symbol are via the global offset table.
2257 For such cases we need not do anything here; the relocations will
2258 be handled correctly by relocate_section. */
0e1862bb 2259 if (!bfd_link_executable (info))
b34976b6 2260 return TRUE;
252b5132 2261
7843f00e 2262 /* If there are no references to this symbol that do not use the
d5597ebc
L		 2263 GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
2264 reloc. */
2265 eh = (struct elf_i386_link_hash_entry *) h;
2266 if (!h->non_got_ref && !eh->gotoff_ref)
b34976b6 2267 return TRUE;
7843f00e 2268
8bd621d8
AM		 2269 /* If -z nocopyreloc was given, we won't generate them either. */
2270 if (info->nocopyreloc)
2271 {
f5385ebf 2272 h->non_got_ref = 0;
b34976b6 2273 return TRUE;
8bd621d8
AM		 2274 }
2275
643796e3 2276 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2277 if (htab == NULL)
2278 return FALSE;
643796e3 2279
d5597ebc
L		 2280 /* If there aren't any dynamic relocs in read-only sections nor
2281 R_386_GOTOFF relocation, then we can keep the dynamic relocs and
2282 avoid the copy reloc. This doesn't work on VxWorks, where we can
2283 not have dynamic relocations (other than copy and jump slot
2284 relocations) in an executable. */
23209a78 2285 if (ELIMINATE_COPY_RELOCS
d5597ebc 2286 && !eh->gotoff_ref
23209a78 2287 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2288 {
a23b6845
AM		 2289 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2290 {
2291 s = p->sec->output_section;
2292 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2293 break;
2294 }
2295
a23b6845
AM		 2296 if (p == NULL)
2297 {
f5385ebf 2298 h->non_got_ref = 0;
a23b6845
AM		 2299 return TRUE;
2300 }
ebe50bae
AM		 2301 }
2302
252b5132
RH		 2303 /* We must allocate the symbol in our .dynbss section, which will
2304 become part of the .bss section of the executable. There will be
2305 an entry for this symbol in the .dynsym section. The dynamic
2306 object will contain position independent code, so all references
2307 from the dynamic object to this symbol will go through the global
2308 offset table. The dynamic linker will use the .dynsym entry to
2309 determine the address it must put in the global offset table, so
2310 both the dynamic object and the regular object will refer to the
2311 same memory location for the variable. */
2312
252b5132
RH		 2313 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2314 copy the initial value out of the dynamic object and into the
0ac8d2ca 2315 runtime process image. */
1d7e9d18 2316 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2317 {
eea6121a 2318 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2319 h->needs_copy = 1;
252b5132
RH		 2320 }
2321
0ac8d2ca 2322 s = htab->sdynbss;
252b5132 2323
6cabe1ea 2324 return _bfd_elf_adjust_dynamic_copy (info, h, s);
252b5132
RH		 2325}
2326
6725bdbf 2327/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2328 dynamic relocs. */
6725bdbf 2329
b34976b6 2330static bfd_boolean
eb4ff4d6 2331elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 2332{
2333 struct bfd_link_info *info;
2334 struct elf_i386_link_hash_table *htab;
5a15f56f 2335 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2336 struct elf_dyn_relocs *p;
25e762b9 2337 unsigned plt_entry_size;
6725bdbf 2338
e92d460e 2339 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2340 return TRUE;
6725bdbf 2341
cbe950e9 2342 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2343
6725bdbf
AM		 2344 info = (struct bfd_link_info *) inf;
2345 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 2346 if (htab == NULL)
2347 return FALSE;
6725bdbf 2348
25e762b9
RM		 2349 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2350
04ebc307
L		 2351 /* Clear the reference count of function pointer relocations if
2352 symbol isn't a normal function. */
2353 if (h->type != STT_FUNC)
2354 eh->func_pointer_refcount = 0;
2355
dd7e64d4
L		 2356 /* We can't use the GOT PLT if pointer equality is needed since
2357 finish_dynamic_symbol won't clear symbol value and the dynamic
2358 linker won't update the GOT slot. We will get into an infinite
2359 loop at run-time. */
2360 if (htab->plt_got != NULL
2361 && h->type != STT_GNU_IFUNC
2362 && !h->pointer_equality_needed
2363 && h->plt.refcount > 0
2364 && h->got.refcount > 0)
2365 {
2366 /* Don't use the regular PLT if there are both GOT and GOTPLT
2367 reloctions. */
2368 h->plt.offset = (bfd_vma) -1;
2369
2370 /* Use the GOT PLT. */
2371 eh->plt_got.refcount = 1;
2372 }
2373
cbe950e9
L		 2374 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2375 here if it is defined and referenced in a non-shared object. */
2376 if (h->type == STT_GNU_IFUNC
2377 && h->def_regular)
25e762b9 2378 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
7b70956d
WN		 2379 plt_entry_size,
2380 plt_entry_size, 4);
04ebc307
L		 2381 /* Don't create the PLT entry if there are only function pointer
2382 relocations which can be resolved at run-time. */
cbe950e9 2383 else if (htab->elf.dynamic_sections_created
04ebc307
L		 2384 && (h->plt.refcount > eh->func_pointer_refcount
2385 || eh->plt_got.refcount > 0))
6725bdbf 2386 {
25070364
L		 2387 bfd_boolean use_plt_got;
2388
04ebc307
L		 2389 /* Clear the reference count of function pointer relocations
2390 if PLT is used. */
2391 eh->func_pointer_refcount = 0;
2392
8ded2ddc 2393 if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
25070364
L		 2394 {
2395 /* Don't use the regular PLT for DF_BIND_NOW. */
2396 h->plt.offset = (bfd_vma) -1;
2397
2398 /* Use the GOT PLT. */
2399 h->got.refcount = 1;
2400 eh->plt_got.refcount = 1;
2401 }
2402
2403 use_plt_got = eh->plt_got.refcount > 0;
dd7e64d4 2404
5a15f56f
AM		 2405 /* Make sure this symbol is output as a dynamic symbol.
2406 Undefined weak syms won't yet be marked as dynamic. */
2407 if (h->dynindx == -1
f5385ebf 2408 && !h->forced_local)
5a15f56f 2409 {
c152c796 2410 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2411 return FALSE;
5a15f56f
AM		 2412 }
2413
0e1862bb 2414 if (bfd_link_pic (info)
4e795f50 2415 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2416 {
6de2ae4a 2417 asection *s = htab->elf.splt;
dd7e64d4 2418 asection *got_s = htab->plt_got;
6725bdbf 2419
7c1e8d3e
L		 2420 /* If this is the first .plt entry, make room for the special
2421 first entry. The .plt section is used by prelink to undo
2422 prelinking for dynamic relocations. */
2423 if (s->size == 0)
2424 s->size = plt_entry_size;
2425
dd7e64d4
L		 2426 if (use_plt_got)
2427 eh->plt_got.offset = got_s->size;
2428 else
7c1e8d3e 2429 h->plt.offset = s->size;
6725bdbf 2430
ced53ee5
AM		 2431 /* If this symbol is not defined in a regular file, and we are
2432 not generating a shared library, then set the symbol to this
2433 location in the .plt. This is required to make function
2434 pointers compare as equal between the normal executable and
2435 the shared library. */
0e1862bb 2436 if (! bfd_link_pic (info)
f5385ebf 2437 && !h->def_regular)
ced53ee5 2438 {
dd7e64d4
L		 2439 if (use_plt_got)
2440 {
2441 /* We need to make a call to the entry of the GOT PLT
2442 instead of regular PLT entry. */
2443 h->root.u.def.section = got_s;
2444 h->root.u.def.value = eh->plt_got.offset;
2445 }
2446 else
2447 {
2448 h->root.u.def.section = s;
2449 h->root.u.def.value = h->plt.offset;
2450 }
ced53ee5 2451 }
6725bdbf 2452
ced53ee5 2453 /* Make room for this entry. */
dd7e64d4
L		 2454 if (use_plt_got)
2455 got_s->size += sizeof (elf_i386_got_plt_entry);
2456 else
2457 {
2458 s->size += plt_entry_size;
6725bdbf 2459
dd7e64d4
L		 2460 /* We also need to make an entry in the .got.plt section,
2461 which will be placed in the .got section by the linker
2462 script. */
2463 htab->elf.sgotplt->size += 4;
6725bdbf 2464
dd7e64d4
L		 2465 /* We also need to make an entry in the .rel.plt section. */
2466 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2467 htab->elf.srelplt->reloc_count++;
2468 }
eac338cf 2469
23209a78 2470 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
0e1862bb 2471 && !bfd_link_pic (info))
eac338cf
PB		 2472 {
2473 /* VxWorks has a second set of relocations for each PLT entry
2474 in executables. They go in a separate relocation section,
2475 which is processed by the kernel loader. */
2476
2477 /* There are two relocations for the initial PLT entry: an
2478 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2479 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2480
25e762b9 2481 if (h->plt.offset == plt_entry_size)
eac338cf
PB		 2482 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2483
2484 /* There are two extra relocations for each subsequent PLT entry:
2485 an R_386_32 relocation for the GOT entry, and an R_386_32
2486 relocation for the PLT entry. */
2487
2488 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2489 }
6725bdbf 2490 }
ced53ee5
AM		 2491 else
2492 {
51b64d56 2493 h->plt.offset = (bfd_vma) -1;
f5385ebf 2494 h->needs_plt = 0;
ced53ee5 2495 }
6725bdbf
AM		 2496 }
2497 else
2498 {
51b64d56 2499 h->plt.offset = (bfd_vma) -1;
f5385ebf 2500 h->needs_plt = 0;
6725bdbf
AM		 2501 }
2502
67a4f2b7
AO		 2503 eh->tlsdesc_got = (bfd_vma) -1;
2504
37e55690 2505 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2506 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2507 if (h->got.refcount > 0
0e1862bb 2508 && bfd_link_executable (info)
13ae64f3 2509 && h->dynindx == -1
37e55690 2510 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2511 h->got.offset = (bfd_vma) -1;
13ae64f3 2512 else if (h->got.refcount > 0)
6725bdbf 2513 {
0ac8d2ca 2514 asection *s;
b34976b6 2515 bfd_boolean dyn;
13ae64f3 2516 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2517
5a15f56f
AM		 2518 /* Make sure this symbol is output as a dynamic symbol.
2519 Undefined weak syms won't yet be marked as dynamic. */
2520 if (h->dynindx == -1
f5385ebf 2521 && !h->forced_local)
5a15f56f 2522 {
c152c796 2523 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2524 return FALSE;
5a15f56f
AM		 2525 }
2526
6de2ae4a 2527 s = htab->elf.sgot;
67a4f2b7
AO		 2528 if (GOT_TLS_GDESC_P (tls_type))
2529 {
6de2ae4a 2530 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2531 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2532 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2533 h->got.offset = (bfd_vma) -2;
2534 }
2535 if (! GOT_TLS_GDESC_P (tls_type)
2536 || GOT_TLS_GD_P (tls_type))
2537 {
2538 h->got.offset = s->size;
2539 s->size += 4;
2540 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2541 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2542 s->size += 4;
2543 }
ebe50bae 2544 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2545 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2546 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2547 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2548 need two), R_386_TLS_GD needs one if local symbol and two if
2549 global. */
2550 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2551 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2552 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2553 || (tls_type & GOT_TLS_IE))
6de2ae4a 2554 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2555 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2556 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2557 else if (! GOT_TLS_GDESC_P (tls_type)
2558 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2559 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 2560 && (bfd_link_pic (info)
ef5aade5 2561 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2562 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2563 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2564 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2565 }
2566 else
51b64d56 2567 h->got.offset = (bfd_vma) -1;
6725bdbf 2568
5a15f56f 2569 if (eh->dyn_relocs == NULL)
b34976b6 2570 return TRUE;
5a15f56f 2571
0c715baa
AM		 2572 /* In the shared -Bsymbolic case, discard space allocated for
2573 dynamic pc-relative relocs against symbols which turn out to be
2574 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2575 space for pc-relative relocs that have become local due to symbol
2576 visibility changes. */
0c715baa 2577
0e1862bb 2578 if (bfd_link_pic (info))
5a15f56f 2579 {
09695f56
AM		 2580 /* The only reloc that uses pc_count is R_386_PC32, which will
2581 appear on a call or on something like ".long foo - .". We
2582 want calls to protected symbols to resolve directly to the
2583 function rather than going via the plt. If people want
2584 function pointer comparisons to work as expected then they
2585 should avoid writing assembly like ".long foo - .". */
2586 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2587 {
e03a8ed8 2588 struct elf_dyn_relocs **pp;
0c715baa
AM		 2589
2590 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2591 {
c3ce498c
L		 2592 p->count -= p->pc_count;
2593 p->pc_count = 0;
0c715baa
AM		 2594 if (p->count == 0)
2595 *pp = p->next;
2596 else
2597 pp = &p->next;
2598 }
5a15f56f 2599 }
4e795f50 2600
23209a78 2601 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2602 {
e03a8ed8 2603 struct elf_dyn_relocs **pp;
3348747a
NS		 2604 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2605 {
2606 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2607 *pp = p->next;
2608 else
2609 pp = &p->next;
2610 }
2611 }
2612
4e795f50 2613 /* Also discard relocs on undefined weak syms with non-default
c353e543 2614 visibility. */
22d606e9 2615 if (eh->dyn_relocs != NULL
c353e543 2616 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2617 {
2618 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2619 eh->dyn_relocs = NULL;
2620
2621 /* Make sure undefined weak symbols are output as a dynamic
2622 symbol in PIEs. */
2623 else if (h->dynindx == -1
2624 && !h->forced_local)
2625 {
2626 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2627 return FALSE;
2628 }
2629 }
0c715baa 2630 }
a23b6845 2631 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2632 {
2633 /* For the non-shared case, discard space for relocs against
2634 symbols which turn out to need copy relocs or are not
04ebc307
L		 2635 dynamic. Keep dynamic relocations for run-time function
2636 pointer initialization. */
0c715baa 2637
04ebc307 2638 if ((!h->non_got_ref || eh->func_pointer_refcount > 0)
f5385ebf
AM		 2639 && ((h->def_dynamic
2640 && !h->def_regular)
ebe50bae 2641 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2642 && (h->root.type == bfd_link_hash_undefweak
2643 || h->root.type == bfd_link_hash_undefined))))
2644 {
2645 /* Make sure this symbol is output as a dynamic symbol.
2646 Undefined weak syms won't yet be marked as dynamic. */
2647 if (h->dynindx == -1
f5385ebf 2648 && !h->forced_local)
0c715baa 2649 {
c152c796 2650 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2651 return FALSE;
0c715baa 2652 }
5a15f56f 2653
0c715baa
AM		 2654 /* If that succeeded, we know we'll be keeping all the
2655 relocs. */
2656 if (h->dynindx != -1)
2657 goto keep;
2658 }
2659
2660 eh->dyn_relocs = NULL;
04ebc307 2661 eh->func_pointer_refcount = 0;
0c715baa 2662
ec338859 2663 keep: ;
5a15f56f
AM		 2664 }
2665
0c715baa
AM		 2666 /* Finally, allocate space. */
2667 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2668 {
e7c33416
NC		 2669 asection *sreloc;
2670
cbe950e9 2671 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2672
2673 BFD_ASSERT (sreloc != NULL);
eea6121a 2674 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2675 }
2676
b34976b6 2677 return TRUE;
6725bdbf
AM		 2678}
2679
c25bc9fc
L		 2680/* Allocate space in .plt, .got and associated reloc sections for
2681 local dynamic relocs. */
2682
2683static bfd_boolean
2684elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2685{
2686 struct elf_link_hash_entry *h
2687 = (struct elf_link_hash_entry *) *slot;
2688
2689 if (h->type != STT_GNU_IFUNC
2690 || !h->def_regular
2691 || !h->ref_regular
2692 || !h->forced_local
2693 || h->root.type != bfd_link_hash_defined)
2694 abort ();
2695
2696 return elf_i386_allocate_dynrelocs (h, inf);
2697}
2698
0c715baa
AM		 2699/* Find any dynamic relocs that apply to read-only sections. */
2700
b34976b6 2701static bfd_boolean
eb4ff4d6 2702elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2703{
2704 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2705 struct elf_dyn_relocs *p;
0c715baa 2706
aa715242
L		 2707 /* Skip local IFUNC symbols. */
2708 if (h->forced_local && h->type == STT_GNU_IFUNC)
2709 return TRUE;
2710
0c715baa
AM		 2711 eh = (struct elf_i386_link_hash_entry *) h;
2712 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2713 {
2714 asection *s = p->sec->output_section;
2715
2716 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2717 {
2718 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2719
2720 info->flags |= DF_TEXTREL;
2721
0e1862bb 2722 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 2723 || info->error_textrel)
2724 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L		 2725 p->sec->owner, h->root.root.string,
2726 p->sec);
2727
0c715baa 2728 /* Not an error, just cut short the traversal. */
b34976b6 2729 return FALSE;
0c715baa
AM		 2730 }
2731 }
b34976b6 2732 return TRUE;
0c715baa
AM		 2733}
2734
02a86693
L		 2735/* With the local symbol, foo, we convert
2736 mov foo@GOT[(%reg1)], %reg2
2737 to
2738 lea foo[@GOTOFF(%reg1)], %reg2
2739 and convert
2740 call/jmp *foo@GOT[(%reg)]
daa67607 2741 to
02a86693
L		 2742 nop call foo/jmp foo nop
2743 When PIC is false, convert
2744 test %reg1, foo@GOT[(%reg2)]
2745 to
2746 test $foo, %reg1
2747 and convert
2748 binop foo@GOT[(%reg1)], %reg2
2749 to
2750 binop $foo, %reg2
2751 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
2752 instructions. */
daa67607
L		 2753
2754static bfd_boolean
02a86693 2755elf_i386_convert_load (bfd *abfd, asection *sec,
daa67607
L		 2756 struct bfd_link_info *link_info)
2757{
2758 Elf_Internal_Shdr *symtab_hdr;
2759 Elf_Internal_Rela *internal_relocs;
2760 Elf_Internal_Rela *irel, *irelend;
2761 bfd_byte *contents;
2762 struct elf_i386_link_hash_table *htab;
2763 bfd_boolean changed_contents;
2764 bfd_boolean changed_relocs;
2765 bfd_signed_vma *local_got_refcounts;
2766
2767 /* Don't even try to convert non-ELF outputs. */
2768 if (!is_elf_hash_table (link_info->hash))
2769 return FALSE;
2770
c1d11331 2771 /* Nothing to do if there is no need or no output. */
daa67607 2772 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
02a86693 2773 || sec->need_convert_load == 0
c8831961 2774 || bfd_is_abs_section (sec->output_section))
daa67607
L		 2775 return TRUE;
2776
2777 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2778
2779 /* Load the relocations for this section. */
2780 internal_relocs = (_bfd_elf_link_read_relocs
2781 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2782 link_info->keep_memory));
2783 if (internal_relocs == NULL)
2784 return FALSE;
2785
2786 htab = elf_i386_hash_table (link_info);
2787 changed_contents = FALSE;
2788 changed_relocs = FALSE;
2789 local_got_refcounts = elf_local_got_refcounts (abfd);
2790
2791 /* Get the section contents. */
2792 if (elf_section_data (sec)->this_hdr.contents != NULL)
2793 contents = elf_section_data (sec)->this_hdr.contents;
2794 else
2795 {
2796 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2797 goto error_return;
2798 }
2799
2800 irelend = internal_relocs + sec->reloc_count;
2801 for (irel = internal_relocs; irel < irelend; irel++)
2802 {
2803 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2804 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2805 unsigned int indx;
2806 struct elf_link_hash_entry *h;
02a86693
L		 2807 unsigned int opcode;
2808 unsigned int modrm;
2809 bfd_vma roff;
2810 bfd_boolean baseless;
2811 Elf_Internal_Sym *isym;
2812 unsigned int addend;
2813 unsigned int nop;
2814 bfd_vma nop_offset;
daa67607 2815
02a86693 2816 if (r_type != R_386_GOT32 && r_type != R_386_GOT32X)
daa67607
L		 2817 continue;
2818
02a86693
L		 2819 roff = irel->r_offset;
2820 if (roff < 2)
2821 continue;
2822
2823 modrm = bfd_get_8 (abfd, contents + roff - 1);
2824 baseless = (modrm & 0xc7) == 0x5;
2825
2826 if (r_type == R_386_GOT32X
2827 && baseless
2828 && bfd_link_pic (link_info))
daa67607 2829 {
02a86693
L		 2830 /* For PIC, disallow R_386_GOT32X without a base register
2831 since we don't know what the GOT base is. Allow
2832 R_386_GOT32 for existing object files. */
2833 const char *name;
2834
2835 if (r_symndx < symtab_hdr->sh_info)
2836 {
2837 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd,
2838 r_symndx);
2839 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
2840 }
2841 else
2842 {
2843 indx = r_symndx - symtab_hdr->sh_info;
2844 h = elf_sym_hashes (abfd)[indx];
2845 BFD_ASSERT (h != NULL);
2846 name = h->root.root.string;
2847 }
2848
2849 (*_bfd_error_handler)
2850 (_("%B: direct GOT relocation R_386_GOT32X against `%s' without base register can not be used when making a shared object"),
2851 abfd, name);
2852 goto error_return;
2853 }
daa67607 2854
02a86693
L		 2855 opcode = bfd_get_8 (abfd, contents + roff - 2);
2856
2857 /* It is OK to convert mov to lea. */
2858 if (opcode != 0x8b)
2859 {
2860 /* Only convert R_386_GOT32X relocation for call, jmp or
2861 one of adc, add, and, cmp, or, sbb, sub, test, xor
2862 instructions. */
2863 if (r_type != R_386_GOT32X)
2864 continue;
2865
2866 /* It is OK to convert indirect branch to direct branch. It
2867 is OK to convert adc, add, and, cmp, or, sbb, sub, test,
2868 xor only when PIC is false. */
2869 if (opcode != 0xff && bfd_link_pic (link_info))
2870 continue;
2871 }
2872
2873 /* Try to convert R_386_GOT32 and R_386_GOT32X. Get the symbol
2874 referred to by the reloc. */
2875 if (r_symndx < symtab_hdr->sh_info)
2876 {
daa67607
L		 2877 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2878 abfd, r_symndx);
2879
02a86693
L		 2880 /* STT_GNU_IFUNC must keep GOT32 relocations. */
2881 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
2882 continue;
2883
2884 h = NULL;
2885 if (opcode == 0x0ff)
2886 /* Convert "call/jmp *foo@GOT[(%reg)]". */
2887 goto convert_branch;
2888 else
2889 /* Convert "mov foo@GOT[(%reg1)], %reg2",
2890 "test %reg1, foo@GOT(%reg2)" and
2891 "binop foo@GOT[(%reg1)], %reg2". */
2892 goto convert_load;
daa67607
L		 2893 }
2894
2895 indx = r_symndx - symtab_hdr->sh_info;
2896 h = elf_sym_hashes (abfd)[indx];
2897 BFD_ASSERT (h != NULL);
2898
2899 while (h->root.type == bfd_link_hash_indirect
2900 || h->root.type == bfd_link_hash_warning)
2901 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2902
02a86693
L		 2903 /* STT_GNU_IFUNC must keep GOT32 relocations. */
2904 if (h->type == STT_GNU_IFUNC)
2905 continue;
2906
2907 if (opcode == 0xff)
2908 {
2909 /* We have "call/jmp *foo@GOT[(%reg)]". */
2910 if ((h->root.type == bfd_link_hash_defined
2911 || h->root.type == bfd_link_hash_defweak)
2912 && SYMBOL_REFERENCES_LOCAL (link_info, h))
2913 {
2914 /* The function is locally defined. */
2915convert_branch:
2916 addend = bfd_get_32 (abfd, contents + roff);
2917 /* Addend for R_386_GOT32X relocation must be 0. */
2918 if (addend != 0)
2919 continue;
2920
2921 /* Convert R_386_GOT32X to R_386_PC32. */
2922 if (modrm == 0x15 || (modrm & 0xf8) == 0x90)
2923 {
2924 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
2925 is a nop prefix. */
2926 modrm = 0xe8;
2927 nop = ADDR_PREFIX_OPCODE;
2928 nop_offset = roff - 2;
2929 }
2930 else
2931 {
2932 /* Convert to "jmp foo nop". */
2933 modrm = 0xe9;
2934 nop = NOP_OPCODE;
2935 nop_offset = roff + 3;
2936 irel->r_offset -= 1;
2937 }
2938
2939 bfd_put_8 (abfd, nop, contents + nop_offset);
2940 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
2941 /* When converting to PC-relative relocation, we
2942 need to adjust addend by -4. */
2943 bfd_put_32 (abfd, -4, contents + irel->r_offset);
2944 irel->r_info = ELF32_R_INFO (r_symndx, R_386_PC32);
2945
2946 if (h)
2947 {
2948 if (h->got.refcount > 0)
2949 h->got.refcount -= 1;
2950 }
2951 else
2952 {
2953 if (local_got_refcounts != NULL
2954 && local_got_refcounts[r_symndx] > 0)
2955 local_got_refcounts[r_symndx] -= 1;
2956 }
2957
2958 changed_contents = TRUE;
2959 changed_relocs = TRUE;
2960 }
2961 }
2962 else
daa67607 2963 {
02a86693
L		 2964 /* We have "mov foo@GOT[(%re1g)], %reg2",
2965 "test %reg1, foo@GOT(%reg2)" and
2966 "binop foo@GOT[(%reg1)], %reg2".
2967
2968 Avoid optimizing _DYNAMIC since ld.so may use its
2969 link-time address. */
2970 if (h == htab->elf.hdynamic)
2971 continue;
2972
2973 if ((h->root.type == bfd_link_hash_defined
2974 || h->root.type == bfd_link_hash_defweak)
2975 && SYMBOL_REFERENCES_LOCAL (link_info, h))
2976 {
2977convert_load:
2978 if (opcode == 0x8b)
2979 {
2980 /* Convert "mov foo@GOT(%reg1), %reg2" to
2981 "lea foo@GOTOFF(%reg1), %reg2". */
2982 if (r_type == R_386_GOT32X
2983 && (baseless || !bfd_link_pic (link_info)))
2984 {
2985 r_type = R_386_32;
2986 /* For R_386_32, convert
2987 "lea foo@GOTOFF(%reg1), %reg2" to
2988 "lea foo@GOT, %reg2". */
2989 if (!baseless)
2990 {
2991 modrm = 0x5 | (modrm & 0x38);
2992 bfd_put_8 (abfd, modrm, contents + roff - 1);
2993 }
2994 }
2995 else
2996 r_type = R_386_GOTOFF;
2997 opcode = 0x8d;
2998 }
2999 else
3000 {
3001 /* Addend for R_386_GOT32X relocation must be 0. */
3002 addend = bfd_get_32 (abfd, contents + roff);
3003 if (addend != 0)
3004 continue;
3005
3006 if (opcode == 0x85)
3007 {
3008 /* Convert "test %reg1, foo@GOT(%reg2)" to
3009 "test $foo, %reg1". */
3010 modrm = 0xc0 | (modrm & 0x38) >> 3;
3011 opcode = 0xf7;
3012 }
3013 else
3014 {
3015 /* Convert "binop foo@GOT(%reg1), %reg2" to
3016 "binop $foo, %reg2". */
3017 modrm = (0xc0
3018 | (modrm & 0x38) >> 3
3019 | (opcode & 0x3c));
3020 opcode = 0x81;
3021 }
3022 bfd_put_8 (abfd, modrm, contents + roff - 1);
3023 r_type = R_386_32;
3024 }
3025
3026 bfd_put_8 (abfd, opcode, contents + roff - 2);
3027 irel->r_info = ELF32_R_INFO (r_symndx, r_type);
3028
3029 if (h)
3030 {
3031 if (h->got.refcount > 0)
3032 h->got.refcount -= 1;
3033 }
3034 else
3035 {
3036 if (local_got_refcounts != NULL
3037 && local_got_refcounts[r_symndx] > 0)
3038 local_got_refcounts[r_symndx] -= 1;
3039 }
3040
3041 changed_contents = TRUE;
3042 changed_relocs = TRUE;
3043 }
daa67607
L		 3044 }
3045 }
3046
3047 if (contents != NULL
3048 && elf_section_data (sec)->this_hdr.contents != contents)
3049 {
3050 if (!changed_contents && !link_info->keep_memory)
3051 free (contents);
3052 else
3053 {
3054 /* Cache the section contents for elf_link_input_bfd. */
3055 elf_section_data (sec)->this_hdr.contents = contents;
3056 }
3057 }
3058
3059 if (elf_section_data (sec)->relocs != internal_relocs)
3060 {
3061 if (!changed_relocs)
3062 free (internal_relocs);
3063 else
3064 elf_section_data (sec)->relocs = internal_relocs;
3065 }
3066
3067 return TRUE;
3068
3069 error_return:
3070 if (contents != NULL
3071 && elf_section_data (sec)->this_hdr.contents != contents)
3072 free (contents);
3073 if (internal_relocs != NULL
3074 && elf_section_data (sec)->relocs != internal_relocs)
3075 free (internal_relocs);
3076 return FALSE;
3077}
3078
252b5132
RH		 3079/* Set the sizes of the dynamic sections. */
3080
b34976b6 3081static bfd_boolean
23209a78 3082elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 3083{
6725bdbf 3084 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3085 bfd *dynobj;
3086 asection *s;
b34976b6 3087 bfd_boolean relocs;
0c715baa 3088 bfd *ibfd;
252b5132 3089
6725bdbf 3090 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3091 if (htab == NULL)
3092 return FALSE;
ebe50bae 3093 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 3094 if (dynobj == NULL)
3095 abort ();
252b5132 3096
ebe50bae 3097 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3098 {
3099 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 3100 if (bfd_link_executable (info) && !info->nointerp)
252b5132 3101 {
3d4d4302 3102 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 3103 if (s == NULL)
3104 abort ();
eea6121a 3105 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 3106 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3107 }
161d71a6 3108 }
6725bdbf 3109
0c715baa
AM		 3110 /* Set up .got offsets for local syms, and space for local dynamic
3111 relocs. */
c72f2fb2 3112 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
161d71a6
L		 3113 {
3114 bfd_signed_vma *local_got;
3115 bfd_signed_vma *end_local_got;
13ae64f3 3116 char *local_tls_type;
67a4f2b7 3117 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 3118 bfd_size_type locsymcount;
3119 Elf_Internal_Shdr *symtab_hdr;
3120 asection *srel;
6725bdbf 3121
0ffa91dd 3122 if (! is_i386_elf (ibfd))
161d71a6 3123 continue;
6725bdbf 3124
0c715baa
AM		 3125 for (s = ibfd->sections; s != NULL; s = s->next)
3126 {
e03a8ed8 3127 struct elf_dyn_relocs *p;
0c715baa 3128
02a86693 3129 if (!elf_i386_convert_load (ibfd, s, info))
daa67607
L		 3130 return FALSE;
3131
e03a8ed8 3132 for (p = ((struct elf_dyn_relocs *)
e81d3500 3133 elf_section_data (s)->local_dynrel);
ec338859
AM		 3134 p != NULL;
3135 p = p->next)
0c715baa 3136 {
ec338859
AM		 3137 if (!bfd_is_abs_section (p->sec)
3138 && bfd_is_abs_section (p->sec->output_section))
3139 {
3140 /* Input section has been discarded, either because
3141 it is a copy of a linkonce section or due to
3142 linker script /DISCARD/, so we'll be discarding
3143 the relocs too. */
3144 }
23209a78 3145 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 3146 && strcmp (p->sec->output_section->name,
3147 ".tls_vars") == 0)
3148 {
3149 /* Relocations in vxworks .tls_vars sections are
3150 handled specially by the loader. */
3151 }
248866a8 3152 else if (p->count != 0)
ec338859
AM		 3153 {
3154 srel = elf_section_data (p->sec)->sreloc;
eea6121a 3155 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 3156 if ((p->sec->output_section->flags & SEC_READONLY) != 0
3157 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 3158 {
3159 info->flags |= DF_TEXTREL;
0e1862bb 3160 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 3161 || info->error_textrel)
3162 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 3163 p->sec->owner, p->sec);
b70321a2 3164 }
ec338859 3165 }
0c715baa
AM		 3166 }
3167 }
3168
3169 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 3170 if (!local_got)
3171 continue;
6725bdbf 3172
0ffa91dd 3173 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 3174 locsymcount = symtab_hdr->sh_info;
3175 end_local_got = local_got + locsymcount;
13ae64f3 3176 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 3177 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 3178 s = htab->elf.sgot;
3179 srel = htab->elf.srelgot;
67a4f2b7
AO		 3180 for (; local_got < end_local_got;
3181 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 3182 {
67a4f2b7 3183 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 3184 if (*local_got > 0)
6725bdbf 3185 {
67a4f2b7
AO		 3186 if (GOT_TLS_GDESC_P (*local_tls_type))
3187 {
6de2ae4a 3188 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 3189 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 3190 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 3191 *local_got = (bfd_vma) -2;
3192 }
3193 if (! GOT_TLS_GDESC_P (*local_tls_type)
3194 || GOT_TLS_GD_P (*local_tls_type))
3195 {
3196 *local_got = s->size;
3197 s->size += 4;
3198 if (GOT_TLS_GD_P (*local_tls_type)
3199 || *local_tls_type == GOT_TLS_IE_BOTH)
3200 s->size += 4;
3201 }
0e1862bb 3202 if (bfd_link_pic (info)
67a4f2b7 3203 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 3204 || (*local_tls_type & GOT_TLS_IE))
3205 {
3206 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 3207 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 3208 else if (GOT_TLS_GD_P (*local_tls_type)
3209 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 3210 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 3211 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 3212 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 3213 }
6725bdbf 3214 }
161d71a6
L		 3215 else
3216 *local_got = (bfd_vma) -1;
6725bdbf 3217 }
252b5132 3218 }
6725bdbf 3219
13ae64f3
JJ		 3220 if (htab->tls_ldm_got.refcount > 0)
3221 {
3222 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
3223 relocs. */
6de2ae4a
L		 3224 htab->tls_ldm_got.offset = htab->elf.sgot->size;
3225 htab->elf.sgot->size += 8;
3226 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 3227 }
3228 else
3229 htab->tls_ldm_got.offset = -1;
3230
0c715baa
AM		 3231 /* Allocate global sym .plt and .got entries, and space for global
3232 sym dynamic relocs. */
eb4ff4d6 3233 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 3234
c25bc9fc
L		 3235 /* Allocate .plt and .got entries, and space for local symbols. */
3236 htab_traverse (htab->loc_hash_table,
3237 elf_i386_allocate_local_dynrelocs,
3238 info);
3239
67a4f2b7
AO		 3240 /* For every jump slot reserved in the sgotplt, reloc_count is
3241 incremented. However, when we reserve space for TLS descriptors,
3242 it's not incremented, so in order to compute the space reserved
3243 for them, it suffices to multiply the reloc count by the jump
e1f98742 3244 slot size.
caa0075c 3245
e1f98742
L		 3246 PR ld/13302: We start next_irelative_index at the end of .rela.plt
3247 so that R_386_IRELATIVE entries come last. */
6de2ae4a 3248 if (htab->elf.srelplt)
e1f98742
L		 3249 {
3250 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
3251 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
3252 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
3253 }
3254 else if (htab->elf.irelplt)
3255 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
3256
67a4f2b7 3257
a7b16ceb
L		 3258 if (htab->elf.sgotplt)
3259 {
3260 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 3261 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 3262 if ((htab->elf.hgot == NULL
3263 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 3264 && (htab->elf.sgotplt->size
3265 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 3266 && (htab->elf.splt == NULL
3267 || htab->elf.splt->size == 0)
3268 && (htab->elf.sgot == NULL
3269 || htab->elf.sgot->size == 0)
3270 && (htab->elf.iplt == NULL
3271 || htab->elf.iplt->size == 0)
3272 && (htab->elf.igotplt == NULL
3273 || htab->elf.igotplt->size == 0))
3274 htab->elf.sgotplt->size = 0;
3275 }
3276
9a2a56cc
AM		 3277
3278 if (htab->plt_eh_frame != NULL
3279 && htab->elf.splt != NULL
3280 && htab->elf.splt->size != 0
3281 && !bfd_is_abs_section (htab->elf.splt->output_section)
3282 && _bfd_elf_eh_frame_present (info))
3283 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
3284
5a15f56f
AM		 3285 /* We now have determined the sizes of the various dynamic sections.
3286 Allocate memory for them. */
b34976b6 3287 relocs = FALSE;
252b5132
RH		 3288 for (s = dynobj->sections; s != NULL; s = s->next)
3289 {
eac338cf
PB		 3290 bfd_boolean strip_section = TRUE;
3291
252b5132
RH		 3292 if ((s->flags & SEC_LINKER_CREATED) == 0)
3293 continue;
3294
6de2ae4a 3295 if (s == htab->elf.splt
9a2a56cc 3296 || s == htab->elf.sgot)
252b5132 3297 {
6725bdbf
AM		 3298 /* Strip this section if we don't need it; see the
3299 comment below. */
eac338cf
PB		 3300 /* We'd like to strip these sections if they aren't needed, but if
3301 we've exported dynamic symbols from them we must leave them.
3302 It's too late to tell BFD to get rid of the symbols. */
3303
7325306f 3304 if (htab->elf.hplt != NULL)
eac338cf 3305 strip_section = FALSE;
252b5132 3306 }
9a2a56cc
AM		 3307 else if (s == htab->elf.sgotplt
3308 || s == htab->elf.iplt
3309 || s == htab->elf.igotplt
dd7e64d4 3310 || s == htab->plt_got
9a2a56cc
AM		 3311 || s == htab->plt_eh_frame
3312 || s == htab->sdynbss)
3313 {
3314 /* Strip these too. */
3315 }
0112cd26 3316 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 3317 {
6de2ae4a
L		 3318 if (s->size != 0
3319 && s != htab->elf.srelplt
3320 && s != htab->srelplt2)
b34976b6 3321 relocs = TRUE;
252b5132 3322
0ac8d2ca
AM		 3323 /* We use the reloc_count field as a counter if we need
3324 to copy relocs into the output file. */
5ae0bfb6 3325 s->reloc_count = 0;
252b5132 3326 }
6725bdbf 3327 else
252b5132
RH		 3328 {
3329 /* It's not one of our sections, so don't allocate space. */
3330 continue;
3331 }
3332
c456f082 3333 if (s->size == 0)
252b5132 3334 {
0ac8d2ca
AM		 3335 /* If we don't need this section, strip it from the
3336 output file. This is mostly to handle .rel.bss and
3337 .rel.plt. We must create both sections in
3338 create_dynamic_sections, because they must be created
3339 before the linker maps input sections to output
3340 sections. The linker does that before
3341 adjust_dynamic_symbol is called, and it is that
3342 function which decides whether anything needs to go
3343 into these sections. */
c456f082
AM		 3344 if (strip_section)
3345 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3346 continue;
3347 }
3348
c456f082
AM		 3349 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3350 continue;
3351
f69da49f
AM		 3352 /* Allocate memory for the section contents. We use bfd_zalloc
3353 here in case unused entries are not reclaimed before the
3354 section's contents are written out. This should not happen,
3355 but this way if it does, we get a R_386_NONE reloc instead
3356 of garbage. */
a50b1753 3357 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 3358 if (s->contents == NULL)
b34976b6 3359 return FALSE;
252b5132
RH		 3360 }
3361
e41b3a13 3362 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3363 && htab->plt_eh_frame->contents != NULL)
3364 {
3365 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
3366 sizeof (elf_i386_eh_frame_plt));
3367 bfd_put_32 (dynobj, htab->elf.splt->size,
3368 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3369 }
e41b3a13 3370
ebe50bae 3371 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3372 {
3373 /* Add some entries to the .dynamic section. We fill in the
3374 values later, in elf_i386_finish_dynamic_sections, but we
3375 must add the entries now so that we get the correct size for
3376 the .dynamic section. The DT_DEBUG entry is filled in by the
3377 dynamic linker and used by the debugger. */
dc810e39 3378#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3379 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3380
0e1862bb 3381 if (bfd_link_executable (info))
252b5132 3382 {
dc810e39 3383 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3384 return FALSE;
252b5132
RH		 3385 }
3386
6de2ae4a 3387 if (htab->elf.splt->size != 0)
252b5132 3388 {
7c1e8d3e
L		 3389 /* DT_PLTGOT is used by prelink even if there is no PLT
3390 relocation. */
3391 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 3392 return FALSE;
7c1e8d3e
L		 3393
3394 if (htab->elf.srelplt->size != 0)
3395 {
3396 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3397 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3398 || !add_dynamic_entry (DT_JMPREL, 0))
3399 return FALSE;
3400 }
252b5132
RH		 3401 }
3402
3403 if (relocs)
3404 {
dc810e39
AM		 3405 if (!add_dynamic_entry (DT_REL, 0)
3406 || !add_dynamic_entry (DT_RELSZ, 0)
3407 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3408 return FALSE;
252b5132 3409
0c715baa
AM		 3410 /* If any dynamic relocs apply to a read-only section,
3411 then we need a DT_TEXTREL entry. */
248866a8 3412 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3413 elf_link_hash_traverse (&htab->elf,
3414 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3415
3416 if ((info->flags & DF_TEXTREL) != 0)
3417 {
8efa2874
L		 3418 if ((elf_tdata (output_bfd)->has_gnu_symbols
3419 & elf_gnu_symbol_ifunc) == elf_gnu_symbol_ifunc)
3420 {
3421 info->callbacks->einfo
3422 (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
3423 bfd_set_error (bfd_error_bad_value);
3424 return FALSE;
3425 }
3426
0c715baa 3427 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3428 return FALSE;
0c715baa 3429 }
252b5132 3430 }
23209a78 3431 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3432 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3433 return FALSE;
252b5132 3434 }
dc810e39 3435#undef add_dynamic_entry
252b5132 3436
b34976b6 3437 return TRUE;
252b5132
RH		 3438}
3439
67a4f2b7
AO		 3440static bfd_boolean
3441elf_i386_always_size_sections (bfd *output_bfd,
3442 struct bfd_link_info *info)
3443{
3444 asection *tls_sec = elf_hash_table (info)->tls_sec;
3445
3446 if (tls_sec)
3447 {
3448 struct elf_link_hash_entry *tlsbase;
3449
3450 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3451 "_TLS_MODULE_BASE_",
3452 FALSE, FALSE, FALSE);
3453
3454 if (tlsbase && tlsbase->type == STT_TLS)
3455 {
4dfe6ac6 3456 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3457 struct bfd_link_hash_entry *bh = NULL;
3458 const struct elf_backend_data *bed
3459 = get_elf_backend_data (output_bfd);
3460
4dfe6ac6
NC		 3461 htab = elf_i386_hash_table (info);
3462 if (htab == NULL)
3463 return FALSE;
3464
67a4f2b7
AO		 3465 if (!(_bfd_generic_link_add_one_symbol
3466 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3467 tls_sec, 0, NULL, FALSE,
3468 bed->collect, &bh)))
3469 return FALSE;
9f03412a 3470
4dfe6ac6 3471 htab->tls_module_base = bh;
9f03412a 3472
67a4f2b7
AO		 3473 tlsbase = (struct elf_link_hash_entry *)bh;
3474 tlsbase->def_regular = 1;
3475 tlsbase->other = STV_HIDDEN;
576fa883 3476 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3477 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3478 }
3479 }
3480
3481 return TRUE;
3482}
3483
38701953
AM		 3484/* Set the correct type for an x86 ELF section. We do this by the
3485 section name, which is a hack, but ought to work. */
3486
b34976b6 3487static bfd_boolean
55fd94b0
AM		 3488elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3489 Elf_Internal_Shdr *hdr,
3490 asection *sec)
38701953 3491{
91d6fa6a 3492 const char *name;
38701953
AM		 3493
3494 name = bfd_get_section_name (abfd, sec);
3495
3496 /* This is an ugly, but unfortunately necessary hack that is
3497 needed when producing EFI binaries on x86. It tells
3498 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3499 containing ELF relocation info. We need this hack in order to
3500 be able to generate ELF binaries that can be translated into
3501 EFI applications (which are essentially COFF objects). Those
3502 files contain a COFF ".reloc" section inside an ELFNN object,
3503 which would normally cause BFD to segfault because it would
3504 attempt to interpret this section as containing relocation
3505 entries for section "oc". With this hack enabled, ".reloc"
3506 will be treated as a normal data section, which will avoid the
3507 segfault. However, you won't be able to create an ELFNN binary
3508 with a section named "oc" that needs relocations, but that's
3509 the kind of ugly side-effects you get when detecting section
3510 types based on their names... In practice, this limitation is
3511 unlikely to bite. */
3512 if (strcmp (name, ".reloc") == 0)
3513 hdr->sh_type = SHT_PROGBITS;
3514
b34976b6 3515 return TRUE;
38701953
AM		 3516}
3517
9f03412a
AO		 3518/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3519 executables. Rather than setting it to the beginning of the TLS
3520 section, we have to set it to the end. This function may be called
3521 multiple times, it is idempotent. */
3522
3523static void
eb4ff4d6 3524elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3525{
4dfe6ac6 3526 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3527 struct bfd_link_hash_entry *base;
3528
0e1862bb 3529 if (!bfd_link_executable (info))
9f03412a
AO		 3530 return;
3531
4dfe6ac6
NC		 3532 htab = elf_i386_hash_table (info);
3533 if (htab == NULL)
3534 return;
9f03412a 3535
4dfe6ac6
NC		 3536 base = htab->tls_module_base;
3537 if (base == NULL)
9f03412a
AO		 3538 return;
3539
4dfe6ac6 3540 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3541}
3542
13ae64f3
JJ		 3543/* Return the base VMA address which should be subtracted from real addresses
3544 when resolving @dtpoff relocation.
3545 This is PT_TLS segment p_vaddr. */
3546
3547static bfd_vma
eb4ff4d6 3548elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3549{
e1918d23
AM		 3550 /* If tls_sec is NULL, we should have signalled an error already. */
3551 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3552 return 0;
e1918d23 3553 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3554}
3555
3556/* Return the relocation value for @tpoff relocation
3557 if STT_TLS virtual address is ADDRESS. */
3558
3559static bfd_vma
eb4ff4d6 3560elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3561{
e1918d23 3562 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3563 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3564 bfd_vma static_tls_size;
13ae64f3 3565
e1918d23
AM		 3566 /* If tls_sec is NULL, we should have signalled an error already. */
3567 if (htab->tls_sec == NULL)
6a30718d 3568 return 0;
7dc98aea
RO		 3569
3570 /* Consider special static TLS alignment requirements. */
3571 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3572 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3573}
3574
252b5132
RH		 3575/* Relocate an i386 ELF section. */
3576
b34976b6 3577static bfd_boolean
55fd94b0
AM		 3578elf_i386_relocate_section (bfd *output_bfd,
3579 struct bfd_link_info *info,
3580 bfd *input_bfd,
3581 asection *input_section,
3582 bfd_byte *contents,
3583 Elf_Internal_Rela *relocs,
3584 Elf_Internal_Sym *local_syms,
3585 asection **local_sections)
252b5132 3586{
6725bdbf 3587 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3588 Elf_Internal_Shdr *symtab_hdr;
3589 struct elf_link_hash_entry **sym_hashes;
3590 bfd_vma *local_got_offsets;
67a4f2b7 3591 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 3592 Elf_Internal_Rela *rel;
3593 Elf_Internal_Rela *relend;
3348747a 3594 bfd_boolean is_vxworks_tls;
25e762b9 3595 unsigned plt_entry_size;
252b5132 3596
0ffa91dd 3597 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3598
6725bdbf 3599 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3600 if (htab == NULL)
3601 return FALSE;
0ffa91dd 3602 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3603 sym_hashes = elf_sym_hashes (input_bfd);
3604 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3605 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3606 /* We have to handle relocations in vxworks .tls_vars sections
3607 specially, because the dynamic loader is 'weird'. */
23209a78 3608 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
0e1862bb 3609 && bfd_link_pic (info)
3348747a
NS		 3610 && !strcmp (input_section->output_section->name,
3611 ".tls_vars"));
252b5132 3612
eb4ff4d6 3613 elf_i386_set_tls_module_base (info);
9f03412a 3614
25e762b9
RM		 3615 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3616
252b5132
RH		 3617 rel = relocs;
3618 relend = relocs + input_section->reloc_count;
3619 for (; rel < relend; rel++)
3620 {
13ae64f3 3621 unsigned int r_type;
252b5132
RH		 3622 reloc_howto_type *howto;
3623 unsigned long r_symndx;
3624 struct elf_link_hash_entry *h;
dd7e64d4 3625 struct elf_i386_link_hash_entry *eh;
252b5132
RH		 3626 Elf_Internal_Sym *sym;
3627 asection *sec;
dd7e64d4 3628 bfd_vma off, offplt, plt_offset;
252b5132 3629 bfd_vma relocation;
b34976b6 3630 bfd_boolean unresolved_reloc;
252b5132 3631 bfd_reloc_status_type r;
1b452ec6 3632 unsigned int indx;
13ae64f3 3633 int tls_type;
1788fc08 3634 bfd_vma st_size;
dd7e64d4 3635 asection *resolved_plt;
252b5132
RH		 3636
3637 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3638 if (r_type == R_386_GNU_VTINHERIT
3639 || r_type == R_386_GNU_VTENTRY)
252b5132 3640 continue;
dc47f327 3641
55fd94b0 3642 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3643 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3644 >= R_386_ext - R_386_standard)
3645 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520 3646 >= R_386_ext2 - R_386_ext))
252b5132 3647 {
6ba842b6 3648 (*_bfd_error_handler)
d003868e
AM		 3649 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3650 input_bfd, input_section, r_type);
252b5132 3651 bfd_set_error (bfd_error_bad_value);
b34976b6 3652 return FALSE;
252b5132 3653 }
1b452ec6 3654 howto = elf_howto_table + indx;
252b5132
RH		 3655
3656 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3657 h = NULL;
3658 sym = NULL;
3659 sec = NULL;
b34976b6 3660 unresolved_reloc = FALSE;
252b5132
RH		 3661 if (r_symndx < symtab_hdr->sh_info)
3662 {
3663 sym = local_syms + r_symndx;
3664 sec = local_sections[r_symndx];
3665 relocation = (sec->output_section->vma
3666 + sec->output_offset
3667 + sym->st_value);
1788fc08 3668 st_size = sym->st_size;
ab96bf03
AM		 3669
3670 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3671 && ((sec->flags & SEC_MERGE) != 0
0e1862bb 3672 || (bfd_link_relocatable (info)
ab96bf03 3673 && sec->output_offset != 0)))
f8df10f4 3674 {
f8df10f4 3675 bfd_vma addend;
4a335f3d 3676 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3677
4a335f3d 3678 switch (howto->size)
f8df10f4 3679 {
4a335f3d
AM		 3680 case 0:
3681 addend = bfd_get_8 (input_bfd, where);
3682 if (howto->pc_relative)
3683 {
3684 addend = (addend ^ 0x80) - 0x80;
3685 addend += 1;
3686 }
3687 break;
3688 case 1:
3689 addend = bfd_get_16 (input_bfd, where);
3690 if (howto->pc_relative)
3691 {
3692 addend = (addend ^ 0x8000) - 0x8000;
3693 addend += 2;
3694 }
3695 break;
3696 case 2:
3697 addend = bfd_get_32 (input_bfd, where);
3698 if (howto->pc_relative)
3699 {
3700 addend = (addend ^ 0x80000000) - 0x80000000;
3701 addend += 4;
3702 }
3703 break;
3704 default:
3705 abort ();
f8df10f4
JJ		 3706 }
3707
0e1862bb 3708 if (bfd_link_relocatable (info))
ab96bf03
AM		 3709 addend += sec->output_offset;
3710 else
3711 {
3712 asection *msec = sec;
3713 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3714 addend);
3715 addend -= relocation;
3716 addend += msec->output_section->vma + msec->output_offset;
3717 }
4a335f3d
AM		 3718
3719 switch (howto->size)
3720 {
3721 case 0:
16a10388 3722 /* FIXME: overflow checks. */
4a335f3d
AM		 3723 if (howto->pc_relative)
3724 addend -= 1;
3725 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3726 break;
3727 case 1:
3728 if (howto->pc_relative)
3729 addend -= 2;
3730 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3731 break;
3732 case 2:
3733 if (howto->pc_relative)
3734 addend -= 4;
3735 bfd_put_32 (input_bfd, addend, where);
3736 break;
3737 }
f8df10f4 3738 }
0e1862bb 3739 else if (!bfd_link_relocatable (info)
1f85278f 3740 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3741 {
3742 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3743 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3744 FALSE);
c25bc9fc
L		 3745 if (h == NULL)
3746 abort ();
3747
23209a78 3748 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3749 h->root.u.def.value = sym->st_value;
3750 h->root.u.def.section = sec;
3751 }
252b5132
RH		 3752 }
3753 else
3754 {
3d540e93 3755 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3756 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3757
b2a8e766
AM		 3758 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3759 r_symndx, symtab_hdr, sym_hashes,
3760 h, sec, relocation,
62d887d4 3761 unresolved_reloc, warned, ignored);
1788fc08 3762 st_size = h->size;
252b5132
RH		 3763 }
3764
dbaa2011 3765 if (sec != NULL && discarded_section (sec))
0672748a 3766 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3767 rel, 1, relend, howto, 0, contents);
9635fe29 3768
0e1862bb 3769 if (bfd_link_relocatable (info))
ab96bf03
AM		 3770 continue;
3771
cbe950e9
L		 3772 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3773 it here if it is defined in a non-shared object. */
3774 if (h != NULL
3775 && h->type == STT_GNU_IFUNC
3776 && h->def_regular)
3777 {
3778 asection *plt, *gotplt, *base_got;
3779 bfd_vma plt_index;
4c544807 3780 const char *name;
cbe950e9 3781
97dc35c8
L		 3782 if ((input_section->flags & SEC_ALLOC) == 0)
3783 {
3784 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3785 sections because such sections are not SEC_ALLOC and
3786 thus ld.so will not process them. */
3787 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 3788 continue;
97dc35c8
L		 3789 abort ();
3790 }
3791 else if (h->plt.offset == (bfd_vma) -1)
cbe950e9
L		 3792 abort ();
3793
3794 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3795 if (htab->elf.splt != NULL)
cbe950e9 3796 {
6de2ae4a
L		 3797 plt = htab->elf.splt;
3798 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3799 }
3800 else
3801 {
6de2ae4a
L		 3802 plt = htab->elf.iplt;
3803 gotplt = htab->elf.igotplt;
cbe950e9
L		 3804 }
3805
3806 relocation = (plt->output_section->vma
3807 + plt->output_offset + h->plt.offset);
3808
3809 switch (r_type)
3810 {
3811 default:
4c544807
L		 3812 if (h->root.root.string)
3813 name = h->root.root.string;
3814 else
3815 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3816 NULL);
cbe950e9
L		 3817 (*_bfd_error_handler)
3818 (_("%B: relocation %s against STT_GNU_IFUNC "
3819 "symbol `%s' isn't handled by %s"), input_bfd,
3820 elf_howto_table[r_type].name,
4c544807 3821 name, __FUNCTION__);
cbe950e9
L		 3822 bfd_set_error (bfd_error_bad_value);
3823 return FALSE;
3824
3825 case R_386_32:
710ab287 3826 /* Generate dynamic relcoation only when there is a
c293fa49 3827 non-GOT reference in a shared object. */
0e1862bb 3828 if (bfd_link_pic (info) && h->non_got_ref)
710ab287
L		 3829 {
3830 Elf_Internal_Rela outrel;
710ab287
L		 3831 asection *sreloc;
3832 bfd_vma offset;
3833
c25bc9fc
L		 3834 /* Need a dynamic relocation to get the real function
3835 adddress. */
710ab287
L		 3836 offset = _bfd_elf_section_offset (output_bfd,
3837 info,
3838 input_section,
3839 rel->r_offset);
3840 if (offset == (bfd_vma) -1
3841 || offset == (bfd_vma) -2)
3842 abort ();
3843
3844 outrel.r_offset = (input_section->output_section->vma
3845 + input_section->output_offset
3846 + offset);
3847
3848 if (h->dynindx == -1
44c4ea11 3849 || h->forced_local
0e1862bb 3850 || bfd_link_executable (info))
710ab287
L		 3851 {
3852 /* This symbol is resolved locally. */
56b8aada
L		 3853 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3854 bfd_put_32 (output_bfd,
3855 (h->root.u.def.value
3856 + h->root.u.def.section->output_section->vma
3857 + h->root.u.def.section->output_offset),
3858 contents + offset);
710ab287
L		 3859 }
3860 else
56b8aada 3861 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3862
6de2ae4a 3863 sreloc = htab->elf.irelifunc;
59d6ffb2 3864 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3865
3866 /* If this reloc is against an external symbol, we
3867 do not want to fiddle with the addend. Otherwise,
3868 we need to include the symbol value so that it
3869 becomes an addend for the dynamic reloc. For an
3870 internal symbol, we have updated addend. */
56b8aada 3871 continue;
710ab287 3872 }
d59a60e9 3873 /* FALLTHROUGH */
cbe950e9
L		 3874 case R_386_PC32:
3875 case R_386_PLT32:
3876 goto do_relocation;
3877
3878 case R_386_GOT32:
02a86693 3879 case R_386_GOT32X:
6de2ae4a 3880 base_got = htab->elf.sgot;
cbe950e9
L		 3881 off = h->got.offset;
3882
7afd84dc 3883 if (base_got == NULL)
cbe950e9
L		 3884 abort ();
3885
7afd84dc 3886 if (off == (bfd_vma) -1)
cbe950e9 3887 {
7afd84dc
L		 3888 /* We can't use h->got.offset here to save state, or
3889 even just remember the offset, as finish_dynamic_symbol
3890 would use that as offset into .got. */
6bbec505 3891
6de2ae4a 3892 if (htab->elf.splt != NULL)
7afd84dc 3893 {
25e762b9 3894 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3895 off = (plt_index + 3) * 4;
6de2ae4a 3896 base_got = htab->elf.sgotplt;
7afd84dc 3897 }
cbe950e9
L		 3898 else
3899 {
25e762b9 3900 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3901 off = plt_index * 4;
6de2ae4a 3902 base_got = htab->elf.igotplt;
7afd84dc
L		 3903 }
3904
3905 if (h->dynindx == -1
3906 || h->forced_local
3907 || info->symbolic)
3908 {
3909 /* This references the local defitionion. We must
3910 initialize this entry in the global offset table.
3911 Since the offset must always be a multiple of 8,
3912 we use the least significant bit to record
3913 whether we have initialized it already.
3914
3915 When doing a dynamic link, we create a .rela.got
3916 relocation entry to initialize the value. This
3917 is done in the finish_dynamic_symbol routine. */
3918 if ((off & 1) != 0)
3919 off &= ~1;
3920 else
3921 {
3922 bfd_put_32 (output_bfd, relocation,
3923 base_got->contents + off);
3924 h->got.offset |= 1;
3925 }
cbe950e9 3926 }
cbe950e9 3927
7afd84dc 3928 relocation = off;
cbe950e9 3929
7afd84dc 3930 /* Adjust for static executables. */
6de2ae4a 3931 if (htab->elf.splt == NULL)
7afd84dc
L		 3932 relocation += gotplt->output_offset;
3933 }
3934 else
0018b0a3
L		 3935 {
3936 relocation = (base_got->output_section->vma
3937 + base_got->output_offset + off
3938 - gotplt->output_section->vma
3939 - gotplt->output_offset);
3940 /* Adjust for static executables. */
6de2ae4a 3941 if (htab->elf.splt == NULL)
0018b0a3
L		 3942 relocation += gotplt->output_offset;
3943 }
3944
cbe950e9
L		 3945 goto do_relocation;
3946
3947 case R_386_GOTOFF:
3948 relocation -= (gotplt->output_section->vma
3949 + gotplt->output_offset);
3950 goto do_relocation;
3951 }
3952 }
3953
04ebc307 3954 eh = (struct elf_i386_link_hash_entry *) h;
252b5132
RH		 3955 switch (r_type)
3956 {
02a86693
L		 3957 case R_386_GOT32X:
3958 /* Avoid optimizing _DYNAMIC since ld.so may use its
3959 link-time address. */
3960 if (h == htab->elf.hdynamic)
3961 goto r_386_got32;
3962
3963 if (bfd_link_pic (info))
3964 {
3965 /* It is OK to convert mov to lea and convert indirect
3966 branch to direct branch. It is OK to convert adc,
3967 add, and, cmp, or, sbb, sub, test, xor only when PIC
3968 is false. */
3969 unsigned int opcode;
3970 opcode = bfd_get_8 (abfd, contents + rel->r_offset - 2);
3971 if (opcode != 0x8b && opcode != 0xff)
3972 goto r_386_got32;
3973 }
3974
3975 /* Resolve "mov GOT[(%reg)], %reg",
3976 "call/jmp *GOT[(%reg)]", "test %reg, foo@GOT[(%reg)]"
3977 and "binop foo@GOT[(%reg)], %reg". */
3978 if (h == NULL
3979 || (h->plt.offset == (bfd_vma) -1
3980 && h->got.offset == (bfd_vma) -1)
3981 || htab->elf.sgotplt == NULL)
3982 abort ();
3983
3984 offplt = (htab->elf.sgotplt->output_section->vma
3985 + htab->elf.sgotplt->output_offset);
3986
3987 /* It is relative to .got.plt section. */
3988 if (h->got.offset != (bfd_vma) -1)
3989 /* Use GOT entry. */
3990 relocation = (htab->elf.sgot->output_section->vma
3991 + htab->elf.sgot->output_offset
3992 + h->got.offset - offplt);
3993 else
3994 /* Use GOTPLT entry. */
3995 relocation = (h->plt.offset / plt_entry_size - 1 + 3) * 4;
3996
3997 if (!bfd_link_pic (info))
3998 {
3999 /* If not PIC, add the .got.plt section address for
4000 baseless adressing. */
4001 unsigned int modrm;
4002 modrm = bfd_get_8 (abfd, contents + rel->r_offset - 1);
4003 if ((modrm & 0xc7) == 0x5)
4004 relocation += offplt;
4005 }
4006
4007 unresolved_reloc = FALSE;
4008 break;
4009
252b5132 4010 case R_386_GOT32:
02a86693 4011r_386_got32:
252b5132
RH		 4012 /* Relocation is to the entry for this symbol in the global
4013 offset table. */
6de2ae4a 4014 if (htab->elf.sgot == NULL)
ffb2e45b 4015 abort ();
252b5132
RH		 4016
4017 if (h != NULL)
4018 {
b34976b6 4019 bfd_boolean dyn;
252b5132
RH		 4020
4021 off = h->got.offset;
ebe50bae 4022 dyn = htab->elf.dynamic_sections_created;
0e1862bb
L		 4023 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4024 bfd_link_pic (info),
4025 h)
4026 || (bfd_link_pic (info)
586119b3 4027 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 4028 || (ELF_ST_VISIBILITY (h->other)
4029 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 4030 {
4031 /* This is actually a static link, or it is a
4032 -Bsymbolic link and the symbol is defined
4033 locally, or the symbol was forced to be local
4034 because of a version file. We must initialize
4035 this entry in the global offset table. Since the
4036 offset must always be a multiple of 4, we use the
4037 least significant bit to record whether we have
4038 initialized it already.
4039
4040 When doing a dynamic link, we create a .rel.got
4041 relocation entry to initialize the value. This
4042 is done in the finish_dynamic_symbol routine. */
4043 if ((off & 1) != 0)
4044 off &= ~1;
4045 else
4046 {
4047 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4048 htab->elf.sgot->contents + off);
252b5132
RH		 4049 h->got.offset |= 1;
4050 }
4051 }
8c694914 4052 else
b34976b6 4053 unresolved_reloc = FALSE;
252b5132
RH		 4054 }
4055 else
4056 {
ffb2e45b
AM		 4057 if (local_got_offsets == NULL)
4058 abort ();
252b5132
RH		 4059
4060 off = local_got_offsets[r_symndx];
4061
4062 /* The offset must always be a multiple of 4. We use
83be169b
AM		 4063 the least significant bit to record whether we have
4064 already generated the necessary reloc. */
252b5132
RH		 4065 if ((off & 1) != 0)
4066 off &= ~1;
4067 else
4068 {
6725bdbf 4069 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4070 htab->elf.sgot->contents + off);
252b5132 4071
0e1862bb 4072 if (bfd_link_pic (info))
252b5132 4073 {
947216bf
AM		 4074 asection *s;
4075 Elf_Internal_Rela outrel;
252b5132 4076
6de2ae4a 4077 s = htab->elf.srelgot;
947216bf 4078 if (s == NULL)
ffb2e45b 4079 abort ();
252b5132 4080
6de2ae4a
L		 4081 outrel.r_offset = (htab->elf.sgot->output_section->vma
4082 + htab->elf.sgot->output_offset
252b5132
RH		 4083 + off);
4084 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 4085 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 4086 }
4087
4088 local_got_offsets[r_symndx] |= 1;
4089 }
252b5132
RH		 4090 }
4091
ffb2e45b
AM		 4092 if (off >= (bfd_vma) -2)
4093 abort ();
4094
6de2ae4a
L		 4095 relocation = htab->elf.sgot->output_section->vma
4096 + htab->elf.sgot->output_offset + off
4097 - htab->elf.sgotplt->output_section->vma
4098 - htab->elf.sgotplt->output_offset;
252b5132
RH		 4099 break;
4100
4101 case R_386_GOTOFF:
4102 /* Relocation is relative to the start of the global offset
4103 table. */
4104
3d949995
L		 4105 /* Check to make sure it isn't a protected function or data
4106 symbol for shared library since it may not be local when
4107 used as function address or with copy relocation. We also
e3c0e327 4108 need to make sure that a symbol is referenced locally. */
0e1862bb 4109 if (!bfd_link_executable (info) && h)
90f487df 4110 {
41bed6dd
L		 4111 if (!h->def_regular)
4112 {
4113 const char *v;
4114
4115 switch (ELF_ST_VISIBILITY (h->other))
4116 {
4117 case STV_HIDDEN:
4118 v = _("hidden symbol");
4119 break;
4120 case STV_INTERNAL:
4121 v = _("internal symbol");
4122 break;
4123 case STV_PROTECTED:
4124 v = _("protected symbol");
4125 break;
4126 default:
4127 v = _("symbol");
4128 break;
4129 }
4130
4131 (*_bfd_error_handler)
4132 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
4133 input_bfd, v, h->root.root.string);
4134 bfd_set_error (bfd_error_bad_value);
4135 return FALSE;
4136 }
d5597ebc 4137 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
3d949995
L		 4138 && (h->type == STT_FUNC
4139 || h->type == STT_OBJECT)
41bed6dd
L		 4140 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
4141 {
4142 (*_bfd_error_handler)
3d949995
L		 4143 (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
4144 input_bfd,
4145 h->type == STT_FUNC ? "function" : "data",
4146 h->root.root.string);
41bed6dd
L		 4147 bfd_set_error (bfd_error_bad_value);
4148 return FALSE;
4149 }
90f487df
L		 4150 }
4151
8c37241b
JJ		 4152 /* Note that sgot is not involved in this
4153 calculation. We always want the start of .got.plt. If we
4154 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 4155 permitted by the ABI, we might have to change this
4156 calculation. */
6de2ae4a
L		 4157 relocation -= htab->elf.sgotplt->output_section->vma
4158 + htab->elf.sgotplt->output_offset;
252b5132
RH		 4159 break;
4160
4161 case R_386_GOTPC:
4162 /* Use global offset table as symbol value. */
6de2ae4a
L		 4163 relocation = htab->elf.sgotplt->output_section->vma
4164 + htab->elf.sgotplt->output_offset;
b34976b6 4165 unresolved_reloc = FALSE;
252b5132
RH		 4166 break;
4167
4168 case R_386_PLT32:
4169 /* Relocation is to the entry for this symbol in the
4170 procedure linkage table. */
4171
dd5724d5 4172 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 4173 without using the procedure linkage table. */
252b5132
RH		 4174 if (h == NULL)
4175 break;
4176
dd7e64d4
L		 4177 if ((h->plt.offset == (bfd_vma) -1
4178 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 4179 || htab->elf.splt == NULL)
252b5132
RH		 4180 {
4181 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 4182 happens when statically linking PIC code, or when
4183 using -Bsymbolic. */
252b5132
RH		 4184 break;
4185 }
4186
dd7e64d4
L		 4187 if (h->plt.offset != (bfd_vma) -1)
4188 {
4189 resolved_plt = htab->elf.splt;
4190 plt_offset = h->plt.offset;
4191 }
4192 else
4193 {
4194 resolved_plt = htab->plt_got;
4195 plt_offset = eh->plt_got.offset;
4196 }
4197
4198 relocation = (resolved_plt->output_section->vma
4199 + resolved_plt->output_offset
4200 + plt_offset);
b34976b6 4201 unresolved_reloc = FALSE;
252b5132
RH		 4202 break;
4203
1788fc08 4204 case R_386_SIZE32:
1788fc08
L		 4205 /* Set to symbol size. */
4206 relocation = st_size;
4207 /* Fall through. */
4208
252b5132
RH		 4209 case R_386_32:
4210 case R_386_PC32:
3348747a
NS		 4211 if ((input_section->flags & SEC_ALLOC) == 0
4212 || is_vxworks_tls)
ec338859
AM		 4213 break;
4214
04ebc307 4215 /* Copy dynamic function pointer relocations. */
0e1862bb 4216 if ((bfd_link_pic (info)
ef5aade5
L		 4217 && (h == NULL
4218 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4219 || h->root.type != bfd_link_hash_undefweak)
1788fc08 4220 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 4221 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845 4222 || (ELIMINATE_COPY_RELOCS
0e1862bb 4223 && !bfd_link_pic (info)
12d0ee4a
AM		 4224 && h != NULL
4225 && h->dynindx != -1
04ebc307 4226 && (!h->non_got_ref || eh->func_pointer_refcount > 0)
f5385ebf
AM		 4227 && ((h->def_dynamic
4228 && !h->def_regular)
28d0b90e 4229 || h->root.type == bfd_link_hash_undefweak
0f88be7a 4230 || h->root.type == bfd_link_hash_undefined)))
252b5132 4231 {
947216bf 4232 Elf_Internal_Rela outrel;
b34976b6 4233 bfd_boolean skip, relocate;
0c715baa 4234 asection *sreloc;
252b5132
RH		 4235
4236 /* When generating a shared object, these relocations
4237 are copied into the output file to be resolved at run
4238 time. */
4239
b34976b6
AM		 4240 skip = FALSE;
4241 relocate = FALSE;
252b5132 4242
c629eae0
JJ		 4243 outrel.r_offset =
4244 _bfd_elf_section_offset (output_bfd, info, input_section,
4245 rel->r_offset);
4246 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4247 skip = TRUE;
0bb2d96a 4248 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4249 skip = TRUE, relocate = TRUE;
252b5132
RH		 4250 outrel.r_offset += (input_section->output_section->vma
4251 + input_section->output_offset);
4252
4253 if (skip)
0bb2d96a 4254 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 4255 else if (h != NULL
4256 && h->dynindx != -1
4257 && (r_type == R_386_PC32
0e1862bb 4258 || !bfd_link_pic (info)
55255dae 4259 || !SYMBOLIC_BIND (info, h)
f5385ebf 4260 || !h->def_regular))
0bb2d96a 4261 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 4262 else
4263 {
5a15f56f 4264 /* This symbol is local, or marked to become local. */
b34976b6 4265 relocate = TRUE;
5a15f56f 4266 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 4267 }
4268
cbe950e9 4269 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 4270
62d78908
L		 4271 if (sreloc == NULL || sreloc->contents == NULL)
4272 {
4273 r = bfd_reloc_notsupported;
4274 goto check_relocation_error;
4275 }
0c715baa 4276
59d6ffb2 4277 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 4278
4279 /* If this reloc is against an external symbol, we do
4280 not want to fiddle with the addend. Otherwise, we
4281 need to include the symbol value so that it becomes
4282 an addend for the dynamic reloc. */
0f88be7a 4283 if (! relocate)
252b5132
RH		 4284 continue;
4285 }
252b5132
RH		 4286 break;
4287
37e55690 4288 case R_386_TLS_IE:
0e1862bb 4289 if (!bfd_link_executable (info))
37e55690 4290 {
947216bf 4291 Elf_Internal_Rela outrel;
37e55690 4292 asection *sreloc;
37e55690
JJ		 4293
4294 outrel.r_offset = rel->r_offset
4295 + input_section->output_section->vma
4296 + input_section->output_offset;
4297 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4298 sreloc = elf_section_data (input_section)->sreloc;
4299 if (sreloc == NULL)
4300 abort ();
59d6ffb2 4301 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4302 }
4303 /* Fall through */
4304
13ae64f3 4305 case R_386_TLS_GD:
67a4f2b7
AO		 4306 case R_386_TLS_GOTDESC:
4307 case R_386_TLS_DESC_CALL:
13ae64f3 4308 case R_386_TLS_IE_32:
37e55690 4309 case R_386_TLS_GOTIE:
13ae64f3
JJ		 4310 tls_type = GOT_UNKNOWN;
4311 if (h == NULL && local_got_offsets)
4312 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
4313 else if (h != NULL)
142411ca 4314 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 4315 if (tls_type == GOT_TLS_IE)
4316 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 4317
4318 if (! elf_i386_tls_transition (info, input_bfd,
4319 input_section, contents,
4320 symtab_hdr, sym_hashes,
4321 &r_type, tls_type, rel,
4c544807 4322 relend, h, r_symndx))
142411ca 4323 return FALSE;
13ae64f3
JJ		 4324
4325 if (r_type == R_386_TLS_LE_32)
4326 {
82e51918 4327 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 4328 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
4329 {
142411ca 4330 unsigned int type;
13ae64f3
JJ		 4331 bfd_vma roff;
4332
4333 /* GD->LE transition. */
13ae64f3 4334 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4335 if (type == 0x04)
4336 {
4337 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4338 Change it into:
4339 movl %gs:0, %eax; subl $foo@tpoff, %eax
4340 (6 byte form of subl). */
13ae64f3
JJ		 4341 memcpy (contents + rel->r_offset - 3,
4342 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 4343 roff = rel->r_offset + 5;
13ae64f3
JJ		 4344 }
4345 else
4346 {
142411ca
L		 4347 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4348 Change it into:
4349 movl %gs:0, %eax; subl $foo@tpoff, %eax
4350 (6 byte form of subl). */
4351 memcpy (contents + rel->r_offset - 2,
4352 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
4353 roff = rel->r_offset + 6;
13ae64f3 4354 }
eb4ff4d6 4355 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 4356 contents + roff);
a3fadc9a 4357 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4358 rel++;
4359 continue;
4360 }
67a4f2b7
AO		 4361 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4362 {
4363 /* GDesc -> LE transition.
4364 It's originally something like:
4365 leal x@tlsdesc(%ebx), %eax
4366
4367 leal x@ntpoff, %eax
4368
4369 Registers other than %eax may be set up here. */
4370
142411ca 4371 unsigned int val;
67a4f2b7
AO		 4372 bfd_vma roff;
4373
67a4f2b7 4374 roff = rel->r_offset;
67a4f2b7 4375 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 4376
4377 /* Now modify the instruction as appropriate. */
4378 /* aoliva FIXME: remove the above and xor the byte
4379 below with 0x86. */
4380 bfd_put_8 (output_bfd, val ^ 0x86,
4381 contents + roff - 1);
eb4ff4d6 4382 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 4383 contents + roff);
4384 continue;
4385 }
4386 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4387 {
4388 /* GDesc -> LE transition.
4389 It's originally:
4390 call *(%eax)
4391 Turn it into:
142411ca 4392 xchg %ax,%ax */
67a4f2b7 4393
67a4f2b7 4394 bfd_vma roff;
6bbec505 4395
67a4f2b7 4396 roff = rel->r_offset;
10efb593 4397 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4398 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4399 continue;
4400 }
37e55690 4401 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 4402 {
142411ca 4403 unsigned int val;
13ae64f3
JJ		 4404
4405 /* IE->LE transition:
37e55690
JJ		 4406 Originally it can be one of:
4407 movl foo, %eax
4408 movl foo, %reg
4409 addl foo, %reg
4410 We change it into:
4411 movl $foo, %eax
4412 movl $foo, %reg
4413 addl $foo, %reg. */
37e55690 4414 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 4415 if (val == 0xa1)
4416 {
4417 /* movl foo, %eax. */
55fd94b0
AM		 4418 bfd_put_8 (output_bfd, 0xb8,
4419 contents + rel->r_offset - 1);
37e55690 4420 }
299bf759 4421 else
37e55690 4422 {
142411ca
L		 4423 unsigned int type;
4424
55fd94b0
AM		 4425 type = bfd_get_8 (input_bfd,
4426 contents + rel->r_offset - 2);
299bf759 4427 switch (type)
26e41594 4428 {
299bf759
L		 4429 case 0x8b:
4430 /* movl */
299bf759
L		 4431 bfd_put_8 (output_bfd, 0xc7,
4432 contents + rel->r_offset - 2);
4433 bfd_put_8 (output_bfd,
4434 0xc0 | ((val >> 3) & 7),
4435 contents + rel->r_offset - 1);
4436 break;
4437 case 0x03:
4438 /* addl */
299bf759
L		 4439 bfd_put_8 (output_bfd, 0x81,
4440 contents + rel->r_offset - 2);
4441 bfd_put_8 (output_bfd,
4442 0xc0 | ((val >> 3) & 7),
4443 contents + rel->r_offset - 1);
4444 break;
4445 default:
4446 BFD_FAIL ();
4447 break;
26e41594 4448 }
37e55690 4449 }
eb4ff4d6 4450 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4451 contents + rel->r_offset);
4452 continue;
4453 }
4454 else
4455 {
4456 unsigned int val, type;
4457
4458 /* {IE_32,GOTIE}->LE transition:
4459 Originally it can be one of:
13ae64f3 4460 subl foo(%reg1), %reg2
13ae64f3 4461 movl foo(%reg1), %reg2
37e55690 4462 addl foo(%reg1), %reg2
13ae64f3
JJ		 4463 We change it into:
4464 subl $foo, %reg2
37e55690
JJ		 4465 movl $foo, %reg2 (6 byte form)
4466 addl $foo, %reg2. */
13ae64f3
JJ		 4467 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4468 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4469 if (type == 0x8b)
4470 {
4471 /* movl */
13ae64f3
JJ		 4472 bfd_put_8 (output_bfd, 0xc7,
4473 contents + rel->r_offset - 2);
4474 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4475 contents + rel->r_offset - 1);
4476 }
4477 else if (type == 0x2b)
4478 {
4479 /* subl */
13ae64f3
JJ		 4480 bfd_put_8 (output_bfd, 0x81,
4481 contents + rel->r_offset - 2);
4482 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4483 contents + rel->r_offset - 1);
4484 }
37e55690
JJ		 4485 else if (type == 0x03)
4486 {
4487 /* addl */
4488 bfd_put_8 (output_bfd, 0x81,
4489 contents + rel->r_offset - 2);
4490 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4491 contents + rel->r_offset - 1);
4492 }
13ae64f3
JJ		 4493 else
4494 BFD_FAIL ();
37e55690 4495 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4496 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4497 contents + rel->r_offset);
4498 else
eb4ff4d6 4499 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4500 contents + rel->r_offset);
13ae64f3
JJ		 4501 continue;
4502 }
4503 }
4504
6de2ae4a 4505 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4506 abort ();
4507
4508 if (h != NULL)
67a4f2b7
AO		 4509 {
4510 off = h->got.offset;
4511 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4512 }
13ae64f3
JJ		 4513 else
4514 {
4515 if (local_got_offsets == NULL)
4516 abort ();
4517
4518 off = local_got_offsets[r_symndx];
67a4f2b7 4519 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4520 }
4521
4522 if ((off & 1) != 0)
4523 off &= ~1;
26e41594 4524 else
13ae64f3 4525 {
947216bf 4526 Elf_Internal_Rela outrel;
91d6fa6a 4527 int dr_type;
67a4f2b7 4528 asection *sreloc;
13ae64f3 4529
6de2ae4a 4530 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4531 abort ();
4532
67a4f2b7
AO		 4533 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4534
4535 if (GOT_TLS_GDESC_P (tls_type))
4536 {
59d6ffb2 4537 bfd_byte *loc;
67a4f2b7
AO		 4538 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4539 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4540 <= htab->elf.sgotplt->size);
4541 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4542 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4543 + offplt
4544 + htab->sgotplt_jump_table_size);
6de2ae4a 4545 sreloc = htab->elf.srelplt;
67a4f2b7 4546 loc = sreloc->contents;
5ae0bfb6
RS		 4547 loc += (htab->next_tls_desc_index++
4548 * sizeof (Elf32_External_Rel));
67a4f2b7 4549 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4550 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4551 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4552 if (indx == 0)
4553 {
4554 BFD_ASSERT (! unresolved_reloc);
4555 bfd_put_32 (output_bfd,
eb4ff4d6 4556 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4557 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4558 + htab->sgotplt_jump_table_size + 4);
4559 }
4560 else
4561 {
4562 bfd_put_32 (output_bfd, 0,
6de2ae4a 4563 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4564 + htab->sgotplt_jump_table_size + 4);
4565 }
4566 }
4567
6de2ae4a 4568 sreloc = htab->elf.srelgot;
67a4f2b7 4569
6de2ae4a
L		 4570 outrel.r_offset = (htab->elf.sgot->output_section->vma
4571 + htab->elf.sgot->output_offset + off);
13ae64f3 4572
67a4f2b7 4573 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4574 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4575 else if (GOT_TLS_GDESC_P (tls_type))
4576 goto dr_done;
37e55690
JJ		 4577 else if (tls_type == GOT_TLS_IE_POS)
4578 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4579 else
4580 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4581
37e55690 4582 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4583 bfd_put_32 (output_bfd,
4584 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4585 htab->elf.sgot->contents + off);
37e55690 4586 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4587 bfd_put_32 (output_bfd,
eb4ff4d6 4588 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4589 htab->elf.sgot->contents + off);
67a4f2b7 4590 else if (dr_type != R_386_TLS_DESC)
c366c25e 4591 bfd_put_32 (output_bfd, 0,
6de2ae4a 4592 htab->elf.sgot->contents + off);
13ae64f3 4593 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4594
59d6ffb2 4595 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4596
67a4f2b7 4597 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4598 {
4599 if (indx == 0)
4600 {
82e51918 4601 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4602 bfd_put_32 (output_bfd,
eb4ff4d6 4603 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4604 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4605 }
4606 else
4607 {
4608 bfd_put_32 (output_bfd, 0,
6de2ae4a 4609 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4610 outrel.r_info = ELF32_R_INFO (indx,
4611 R_386_TLS_DTPOFF32);
4612 outrel.r_offset += 4;
59d6ffb2 4613 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4614 }
4615 }
37e55690
JJ		 4616 else if (tls_type == GOT_TLS_IE_BOTH)
4617 {
4618 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4619 (indx == 0
4620 ? relocation - elf_i386_dtpoff_base (info)
4621 : 0),
6de2ae4a 4622 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4623 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4624 outrel.r_offset += 4;
59d6ffb2 4625 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4626 }
13ae64f3 4627
67a4f2b7 4628 dr_done:
13ae64f3
JJ		 4629 if (h != NULL)
4630 h->got.offset |= 1;
4631 else
4632 local_got_offsets[r_symndx] |= 1;
4633 }
4634
67a4f2b7
AO		 4635 if (off >= (bfd_vma) -2
4636 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4637 abort ();
67a4f2b7
AO		 4638 if (r_type == R_386_TLS_GOTDESC
4639 || r_type == R_386_TLS_DESC_CALL)
4640 {
4641 relocation = htab->sgotplt_jump_table_size + offplt;
4642 unresolved_reloc = FALSE;
4643 }
4644 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4645 {
6de2ae4a
L		 4646 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4647 + htab->elf.sgotplt->output_offset;
4648 relocation = htab->elf.sgot->output_section->vma
4649 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4650 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4651 && tls_type == GOT_TLS_IE_BOTH)
4652 relocation += 4;
4653 if (r_type == R_386_TLS_IE)
8c37241b 4654 relocation += g_o_t;
b34976b6 4655 unresolved_reloc = FALSE;
13ae64f3 4656 }
67a4f2b7 4657 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4658 {
4659 unsigned int val, type;
4660 bfd_vma roff;
4661
4662 /* GD->IE transition. */
13ae64f3 4663 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4664 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4665 if (type == 0x04)
4666 {
4667 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4668 Change it into:
4669 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4670 val >>= 3;
142411ca 4671 roff = rel->r_offset - 3;
13ae64f3
JJ		 4672 }
4673 else
4674 {
4675 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4676 Change it into:
4677 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4678 roff = rel->r_offset - 2;
4679 }
4680 memcpy (contents + roff,
4681 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4682 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4683 /* If foo is used only with foo@gotntpoff(%reg) and
4684 foo@indntpoff, but not with foo@gottpoff(%reg), change
4685 subl $foo@gottpoff(%reg), %eax
4686 into:
4687 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4688 if (tls_type == GOT_TLS_IE_POS)
4689 contents[roff + 6] = 0x03;
8c37241b 4690 bfd_put_32 (output_bfd,
6de2ae4a
L		 4691 htab->elf.sgot->output_section->vma
4692 + htab->elf.sgot->output_offset + off
4693 - htab->elf.sgotplt->output_section->vma
4694 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4695 contents + roff + 8);
4696 /* Skip R_386_PLT32. */
4697 rel++;
4698 continue;
4699 }
67a4f2b7
AO		 4700 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4701 {
4702 /* GDesc -> IE transition.
4703 It's originally something like:
4704 leal x@tlsdesc(%ebx), %eax
4705
4706 Change it to:
142411ca 4707 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4708 or:
4709 movl x@gottpoff(%ebx), %eax # before negl %eax
4710
4711 Registers other than %eax may be set up here. */
4712
67a4f2b7
AO		 4713 bfd_vma roff;
4714
4715 /* First, make sure it's a leal adding ebx to a 32-bit
4716 offset into any register, although it's probably
4717 almost always going to be eax. */
4718 roff = rel->r_offset;
67a4f2b7
AO		 4719
4720 /* Now modify the instruction as appropriate. */
4721 /* To turn a leal into a movl in the form we use it, it
4722 suffices to change the first byte from 0x8d to 0x8b.
4723 aoliva FIXME: should we decide to keep the leal, all
4724 we have to do is remove the statement below, and
4725 adjust the relaxation of R_386_TLS_DESC_CALL. */
4726 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4727
4728 if (tls_type == GOT_TLS_IE_BOTH)
4729 off += 4;
4730
4731 bfd_put_32 (output_bfd,
6de2ae4a
L		 4732 htab->elf.sgot->output_section->vma
4733 + htab->elf.sgot->output_offset + off
4734 - htab->elf.sgotplt->output_section->vma
4735 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4736 contents + roff);
4737 continue;
4738 }
4739 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4740 {
4741 /* GDesc -> IE transition.
4742 It's originally:
4743 call *(%eax)
4744
4745 Change it to:
142411ca 4746 xchg %ax,%ax
67a4f2b7
AO		 4747 or
4748 negl %eax
4749 depending on how we transformed the TLS_GOTDESC above.
4750 */
4751
67a4f2b7
AO		 4752 bfd_vma roff;
4753
67a4f2b7 4754 roff = rel->r_offset;
67a4f2b7
AO		 4755
4756 /* Now modify the instruction as appropriate. */
4757 if (tls_type != GOT_TLS_IE_NEG)
4758 {
10efb593
L		 4759 /* xchg %ax,%ax */
4760 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4761 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4762 }
4763 else
4764 {
4765 /* negl %eax */
4766 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4767 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4768 }
4769
4770 continue;
4771 }
4772 else
4773 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4774 break;
4775
4776 case R_386_TLS_LDM:
142411ca
L		 4777 if (! elf_i386_tls_transition (info, input_bfd,
4778 input_section, contents,
4779 symtab_hdr, sym_hashes,
4780 &r_type, GOT_UNKNOWN, rel,
4c544807 4781 relend, h, r_symndx))
142411ca 4782 return FALSE;
13ae64f3 4783
142411ca
L		 4784 if (r_type != R_386_TLS_LDM)
4785 {
13ae64f3 4786 /* LD->LE transition:
13ae64f3
JJ		 4787 leal foo(%reg), %eax; call ___tls_get_addr.
4788 We change it into:
4789 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4790 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4791 memcpy (contents + rel->r_offset - 2,
4792 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4793 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ		 4794 rel++;
4795 continue;
4796 }
4797
6de2ae4a 4798 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4799 abort ();
4800
4801 off = htab->tls_ldm_got.offset;
4802 if (off & 1)
4803 off &= ~1;
4804 else
4805 {
947216bf 4806 Elf_Internal_Rela outrel;
13ae64f3 4807
6de2ae4a 4808 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4809 abort ();
4810
6de2ae4a
L		 4811 outrel.r_offset = (htab->elf.sgot->output_section->vma
4812 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4813
4814 bfd_put_32 (output_bfd, 0,
6de2ae4a 4815 htab->elf.sgot->contents + off);
13ae64f3 4816 bfd_put_32 (output_bfd, 0,
6de2ae4a 4817 htab->elf.sgot->contents + off + 4);
13ae64f3 4818 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4819 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4820 htab->tls_ldm_got.offset |= 1;
4821 }
6de2ae4a
L		 4822 relocation = htab->elf.sgot->output_section->vma
4823 + htab->elf.sgot->output_offset + off
4824 - htab->elf.sgotplt->output_section->vma
4825 - htab->elf.sgotplt->output_offset;
b34976b6 4826 unresolved_reloc = FALSE;
13ae64f3
JJ		 4827 break;
4828
4829 case R_386_TLS_LDO_32:
0e1862bb
L		 4830 if (!bfd_link_executable (info)
4831 || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4832 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4833 else
4834 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4835 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4836 break;
4837
4838 case R_386_TLS_LE_32:
13ae64f3 4839 case R_386_TLS_LE:
0e1862bb 4840 if (!bfd_link_executable (info))
37e55690 4841 {
947216bf 4842 Elf_Internal_Rela outrel;
37e55690 4843 asection *sreloc;
37e55690
JJ		 4844
4845 outrel.r_offset = rel->r_offset
4846 + input_section->output_section->vma
4847 + input_section->output_offset;
4848 if (h != NULL && h->dynindx != -1)
4849 indx = h->dynindx;
4850 else
4851 indx = 0;
4852 if (r_type == R_386_TLS_LE_32)
4853 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4854 else
4855 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4856 sreloc = elf_section_data (input_section)->sreloc;
4857 if (sreloc == NULL)
4858 abort ();
59d6ffb2 4859 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4860 if (indx)
4861 continue;
4862 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4863 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4864 else
eb4ff4d6 4865 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4866 }
4867 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4868 relocation = elf_i386_tpoff (info, relocation);
37e55690 4869 else
eb4ff4d6 4870 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4871 break;
4872
252b5132
RH		 4873 default:
4874 break;
4875 }
4876
239e1f3a
AM		 4877 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4878 because such sections are not SEC_ALLOC and thus ld.so will
4879 not process them. */
8c694914 4880 if (unresolved_reloc
239e1f3a 4881 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4882 && h->def_dynamic)
4883 && _bfd_elf_section_offset (output_bfd, info, input_section,
4884 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4885 {
4886 (*_bfd_error_handler)
843fe662 4887 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4888 input_bfd,
4889 input_section,
6a30718d 4890 (long) rel->r_offset,
843fe662 4891 howto->name,
6a30718d 4892 h->root.root.string);
b34976b6 4893 return FALSE;
6a30718d 4894 }
83be169b 4895
cbe950e9 4896do_relocation:
252b5132
RH		 4897 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4898 contents, rel->r_offset,
55fd94b0 4899 relocation, 0);
252b5132 4900
62d78908 4901check_relocation_error:
cf5c0c5b 4902 if (r != bfd_reloc_ok)
252b5132 4903 {
cf5c0c5b 4904 const char *name;
ffb2e45b 4905
cf5c0c5b
AM		 4906 if (h != NULL)
4907 name = h->root.root.string;
4908 else
4909 {
4910 name = bfd_elf_string_from_elf_section (input_bfd,
4911 symtab_hdr->sh_link,
4912 sym->st_name);
4913 if (name == NULL)
b34976b6 4914 return FALSE;
cf5c0c5b
AM		 4915 if (*name == '\0')
4916 name = bfd_section_name (input_bfd, sec);
4917 }
ffb2e45b 4918
cf5c0c5b
AM		 4919 if (r == bfd_reloc_overflow)
4920 {
cf5c0c5b 4921 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4922 (info, (h ? &h->root : NULL), name, howto->name,
4923 (bfd_vma) 0, input_bfd, input_section,
4924 rel->r_offset)))
b34976b6 4925 return FALSE;
cf5c0c5b
AM		 4926 }
4927 else
4928 {
4929 (*_bfd_error_handler)
d003868e
AM		 4930 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4931 input_bfd, input_section,
cf5c0c5b 4932 (long) rel->r_offset, name, (int) r);
b34976b6 4933 return FALSE;
cf5c0c5b 4934 }
252b5132
RH		 4935 }
4936 }
4937
b34976b6 4938 return TRUE;
252b5132
RH		 4939}
4940
4941/* Finish up dynamic symbol handling. We set the contents of various
4942 dynamic sections here. */
4943
b34976b6 4944static bfd_boolean
55fd94b0
AM		 4945elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4946 struct bfd_link_info *info,
4947 struct elf_link_hash_entry *h,
4948 Elf_Internal_Sym *sym)
252b5132 4949{
6725bdbf 4950 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 4951 unsigned plt_entry_size;
4952 const struct elf_i386_backend_data *abed;
dd7e64d4 4953 struct elf_i386_link_hash_entry *eh;
252b5132 4954
6725bdbf 4955 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 4956 if (htab == NULL)
4957 return FALSE;
252b5132 4958
25e762b9
RM		 4959 abed = get_elf_i386_backend_data (output_bfd);
4960 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4961
dd7e64d4
L		 4962 eh = (struct elf_i386_link_hash_entry *) h;
4963
252b5132
RH		 4964 if (h->plt.offset != (bfd_vma) -1)
4965 {
252b5132
RH		 4966 bfd_vma plt_index;
4967 bfd_vma got_offset;
947216bf
AM		 4968 Elf_Internal_Rela rel;
4969 bfd_byte *loc;
cbe950e9
L		 4970 asection *plt, *gotplt, *relplt;
4971
4972 /* When building a static executable, use .iplt, .igot.plt and
4973 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4974 if (htab->elf.splt != NULL)
cbe950e9 4975 {
6de2ae4a
L		 4976 plt = htab->elf.splt;
4977 gotplt = htab->elf.sgotplt;
4978 relplt = htab->elf.srelplt;
cbe950e9
L		 4979 }
4980 else
4981 {
6de2ae4a
L		 4982 plt = htab->elf.iplt;
4983 gotplt = htab->elf.igotplt;
4984 relplt = htab->elf.irelplt;
cbe950e9 4985 }
252b5132
RH		 4986
4987 /* This symbol has an entry in the procedure linkage table. Set
4988 it up. */
4989
cbe950e9 4990 if ((h->dynindx == -1
0e1862bb 4991 && !((h->forced_local || bfd_link_executable (info))
cbe950e9
L		 4992 && h->def_regular
4993 && h->type == STT_GNU_IFUNC))
4994 || plt == NULL
4995 || gotplt == NULL
4996 || relplt == NULL)
cec7f46a 4997 abort ();
252b5132
RH		 4998
4999 /* Get the index in the procedure linkage table which
5000 corresponds to this symbol. This is the index of this symbol
5001 in all the symbols for which we are making plt entries. The
cbe950e9 5002 first entry in the procedure linkage table is reserved.
252b5132 5003
cbe950e9 5004 Get the offset into the .got table of the entry that
252b5132 5005 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 5006 The first three are reserved.
6bbec505 5007
cbe950e9
L		 5008 For static executables, we don't reserve anything. */
5009
6de2ae4a 5010 if (plt == htab->elf.splt)
cbe950e9 5011 {
e1f98742
L		 5012 got_offset = h->plt.offset / plt_entry_size - 1;
5013 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 5014 }
5015 else
5016 {
e1f98742
L		 5017 got_offset = h->plt.offset / plt_entry_size;
5018 got_offset = got_offset * 4;
cbe950e9 5019 }
252b5132
RH		 5020
5021 /* Fill in the entry in the procedure linkage table. */
0e1862bb 5022 if (! bfd_link_pic (info))
252b5132 5023 {
25e762b9
RM		 5024 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
5025 abed->plt->plt_entry_size);
252b5132 5026 bfd_put_32 (output_bfd,
cbe950e9
L		 5027 (gotplt->output_section->vma
5028 + gotplt->output_offset
252b5132 5029 + got_offset),
25e762b9
RM		 5030 plt->contents + h->plt.offset
5031 + abed->plt->plt_got_offset);
eac338cf 5032
25e762b9 5033 if (abed->is_vxworks)
eac338cf
PB		 5034 {
5035 int s, k, reloc_index;
5036
5037 /* Create the R_386_32 relocation referencing the GOT
5038 for this PLT entry. */
5039
5040 /* S: Current slot number (zero-based). */
25e762b9
RM		 5041 s = ((h->plt.offset - abed->plt->plt_entry_size)
5042 / abed->plt->plt_entry_size);
eac338cf 5043 /* K: Number of relocations for PLTResolve. */
0e1862bb 5044 if (bfd_link_pic (info))
eac338cf
PB		 5045 k = PLTRESOLVE_RELOCS_SHLIB;
5046 else
5047 k = PLTRESOLVE_RELOCS;
5048 /* Skip the PLTresolve relocations, and the relocations for
5049 the other PLT slots. */
5050 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
5051 loc = (htab->srelplt2->contents + reloc_index
5052 * sizeof (Elf32_External_Rel));
5053
6de2ae4a
L		 5054 rel.r_offset = (htab->elf.splt->output_section->vma
5055 + htab->elf.splt->output_offset
eac338cf 5056 + h->plt.offset + 2),
7325306f 5057 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5058 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5059
5060 /* Create the R_386_32 relocation referencing the beginning of
5061 the PLT for this GOT entry. */
6de2ae4a
L		 5062 rel.r_offset = (htab->elf.sgotplt->output_section->vma
5063 + htab->elf.sgotplt->output_offset
eac338cf 5064 + got_offset);
7325306f 5065 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 5066 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 5067 loc + sizeof (Elf32_External_Rel));
eac338cf 5068 }
252b5132
RH		 5069 }
5070 else
5071 {
25e762b9
RM		 5072 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
5073 abed->plt->plt_entry_size);
252b5132 5074 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 5075 plt->contents + h->plt.offset
5076 + abed->plt->plt_got_offset);
252b5132
RH		 5077 }
5078
252b5132
RH		 5079 /* Fill in the entry in the global offset table. */
5080 bfd_put_32 (output_bfd,
cbe950e9
L		 5081 (plt->output_section->vma
5082 + plt->output_offset
252b5132 5083 + h->plt.offset
25e762b9 5084 + abed->plt->plt_lazy_offset),
cbe950e9 5085 gotplt->contents + got_offset);
252b5132
RH		 5086
5087 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 5088 rel.r_offset = (gotplt->output_section->vma
5089 + gotplt->output_offset
252b5132 5090 + got_offset);
cbe950e9 5091 if (h->dynindx == -1
0e1862bb 5092 || ((bfd_link_executable (info)
cbe950e9
L		 5093 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5094 && h->def_regular
5095 && h->type == STT_GNU_IFUNC))
5096 {
5097 /* If an STT_GNU_IFUNC symbol is locally defined, generate
5098 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
5099 in the .got.plt section. */
5100 bfd_put_32 (output_bfd,
23209a78 5101 (h->root.u.def.value
cbe950e9
L		 5102 + h->root.u.def.section->output_section->vma
5103 + h->root.u.def.section->output_offset),
5104 gotplt->contents + got_offset);
5105 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 5106 /* R_386_IRELATIVE comes last. */
5107 plt_index = htab->next_irelative_index--;
cbe950e9
L		 5108 }
5109 else
e1f98742
L		 5110 {
5111 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
5112 plt_index = htab->next_jump_slot_index++;
5113 }
cbe950e9 5114 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 5115 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 5116
e1f98742
L		 5117 /* Don't fill PLT entry for static executables. */
5118 if (plt == htab->elf.splt)
5119 {
5120 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
5121 plt->contents + h->plt.offset
5122 + abed->plt->plt_reloc_offset);
5123 bfd_put_32 (output_bfd, - (h->plt.offset
5124 + abed->plt->plt_plt_offset + 4),
5125 plt->contents + h->plt.offset
5126 + abed->plt->plt_plt_offset);
5127 }
dd7e64d4
L		 5128 }
5129 else if (eh->plt_got.offset != (bfd_vma) -1)
5130 {
5131 bfd_vma got_offset, plt_offset;
5132 asection *plt, *got, *gotplt;
5133 const bfd_byte *got_plt_entry;
5134
5135 /* Offset of displacement of the indirect jump. */
5136 bfd_vma plt_got_offset = 2;
e1f98742 5137
dd7e64d4
L		 5138 /* Set the entry in the GOT procedure linkage table. */
5139 plt = htab->plt_got;
5140 got = htab->elf.sgot;
5141 gotplt = htab->elf.sgotplt;
5142 got_offset = h->got.offset;
5143
5144 if (got_offset == (bfd_vma) -1
5145 || plt == NULL
5146 || got == NULL
5147 || gotplt == NULL)
5148 abort ();
5149
5150 /* Fill in the entry in the GOT procedure linkage table. */
0e1862bb 5151 if (! bfd_link_pic (info))
252b5132 5152 {
dd7e64d4
L		 5153 got_plt_entry = elf_i386_got_plt_entry;
5154 got_offset += got->output_section->vma + got->output_offset;
252b5132 5155 }
dd7e64d4
L		 5156 else
5157 {
5158 got_plt_entry = elf_i386_pic_got_plt_entry;
5159 got_offset += (got->output_section->vma
5160 + got->output_offset
5161 - gotplt->output_section->vma
5162 - gotplt->output_offset);
5163 }
5164
5165 plt_offset = eh->plt_got.offset;
5166 memcpy (plt->contents + plt_offset, got_plt_entry,
5167 sizeof (elf_i386_got_plt_entry));
5168 bfd_put_32 (output_bfd, got_offset,
5169 plt->contents + plt_offset + plt_got_offset);
5170 }
5171
5172 if (!h->def_regular
5173 && (h->plt.offset != (bfd_vma) -1
5174 || eh->plt_got.offset != (bfd_vma) -1))
5175 {
5176 /* Mark the symbol as undefined, rather than as defined in
5177 the .plt section. Leave the value if there were any
5178 relocations where pointer equality matters (this is a clue
5179 for the dynamic linker, to make function pointer
5180 comparisons work between an application and shared
5181 library), otherwise set it to zero. If a function is only
5182 called from a binary, there is no need to slow down
5183 shared libraries because of that. */
5184 sym->st_shndx = SHN_UNDEF;
5185 if (!h->pointer_equality_needed)
5186 sym->st_value = 0;
252b5132
RH		 5187 }
5188
13ae64f3 5189 if (h->got.offset != (bfd_vma) -1
67a4f2b7 5190 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 5191 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 5192 {
947216bf 5193 Elf_Internal_Rela rel;
252b5132
RH		 5194
5195 /* This symbol has an entry in the global offset table. Set it
5196 up. */
5197
6de2ae4a 5198 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 5199 abort ();
252b5132 5200
6de2ae4a
L		 5201 rel.r_offset = (htab->elf.sgot->output_section->vma
5202 + htab->elf.sgot->output_offset
dc810e39 5203 + (h->got.offset & ~(bfd_vma) 1));
252b5132 5204
dd5724d5
AM		 5205 /* If this is a static link, or it is a -Bsymbolic link and the
5206 symbol is defined locally or was forced to be local because
5207 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 5208 The entry in the global offset table will already have been
5209 initialized in the relocate_section function. */
710ab287 5210 if (h->def_regular
0018b0a3
L		 5211 && h->type == STT_GNU_IFUNC)
5212 {
0e1862bb 5213 if (bfd_link_pic (info))
710ab287
L		 5214 {
5215 /* Generate R_386_GLOB_DAT. */
5216 goto do_glob_dat;
5217 }
5218 else
5219 {
cd2b2c10
L		 5220 asection *plt;
5221
710ab287
L		 5222 if (!h->pointer_equality_needed)
5223 abort ();
5224
5225 /* For non-shared object, we can't use .got.plt, which
5226 contains the real function addres if we need pointer
5227 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 5228 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 5229 bfd_put_32 (output_bfd,
5230 (plt->output_section->vma
5231 + plt->output_offset + h->plt.offset),
6de2ae4a 5232 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 5233 return TRUE;
5234 }
0018b0a3 5235 }
0e1862bb 5236 else if (bfd_link_pic (info)
0018b0a3 5237 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 5238 {
6725bdbf 5239 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 5240 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
5241 }
252b5132
RH		 5242 else
5243 {
dd5724d5 5244 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 5245do_glob_dat:
6725bdbf 5246 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 5247 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 5248 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
5249 }
5250
59d6ffb2 5251 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 5252 }
5253
f5385ebf 5254 if (h->needs_copy)
252b5132 5255 {
947216bf 5256 Elf_Internal_Rela rel;
252b5132
RH		 5257
5258 /* This symbol needs a copy reloc. Set it up. */
5259
ffb2e45b
AM		 5260 if (h->dynindx == -1
5261 || (h->root.type != bfd_link_hash_defined
5262 && h->root.type != bfd_link_hash_defweak)
5263 || htab->srelbss == NULL)
5264 abort ();
252b5132
RH		 5265
5266 rel.r_offset = (h->root.u.def.value
5267 + h->root.u.def.section->output_section->vma
5268 + h->root.u.def.section->output_offset);
5269 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 5270 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 5271 }
5272
b34976b6 5273 return TRUE;
252b5132
RH		 5274}
5275
c25bc9fc
L		 5276/* Finish up local dynamic symbol handling. We set the contents of
5277 various dynamic sections here. */
5278
5279static bfd_boolean
5280elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
5281{
5282 struct elf_link_hash_entry *h
5283 = (struct elf_link_hash_entry *) *slot;
5284 struct bfd_link_info *info
23209a78 5285 = (struct bfd_link_info *) inf;
c25bc9fc
L		 5286
5287 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
5288 h, NULL);
5289}
5290
38701953
AM		 5291/* Used to decide how to sort relocs in an optimal manner for the
5292 dynamic linker, before writing them out. */
5293
5294static enum elf_reloc_type_class
cae1fbbb 5295elf_i386_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 5296 const asection *rel_sec ATTRIBUTE_UNUSED,
5297 const Elf_Internal_Rela *rela)
38701953 5298{
cae1fbbb
L		 5299 bfd *abfd = info->output_bfd;
5300 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
5301 struct elf_link_hash_table *htab = elf_hash_table (info);
5302 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
5303 Elf_Internal_Sym sym;
5304
5305 if (htab->dynsym == NULL
5306 || !bed->s->swap_symbol_in (abfd,
5307 (htab->dynsym->contents
5308 + r_symndx * sizeof (Elf32_External_Sym)),
5309 0, &sym))
5310 abort ();
5311
5312 /* Check relocation against STT_GNU_IFUNC symbol. */
5313 if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
5314 return reloc_class_ifunc;
5315
55fd94b0 5316 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 5317 {
5318 case R_386_RELATIVE:
5319 return reloc_class_relative;
5320 case R_386_JUMP_SLOT:
5321 return reloc_class_plt;
5322 case R_386_COPY:
5323 return reloc_class_copy;
5324 default:
5325 return reloc_class_normal;
5326 }
5327}
5328
252b5132
RH		 5329/* Finish up the dynamic sections. */
5330
b34976b6 5331static bfd_boolean
55fd94b0
AM		 5332elf_i386_finish_dynamic_sections (bfd *output_bfd,
5333 struct bfd_link_info *info)
252b5132 5334{
6725bdbf 5335 struct elf_i386_link_hash_table *htab;
252b5132 5336 bfd *dynobj;
252b5132 5337 asection *sdyn;
25e762b9 5338 const struct elf_i386_backend_data *abed;
252b5132 5339
6725bdbf 5340 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5341 if (htab == NULL)
5342 return FALSE;
5343
ebe50bae 5344 dynobj = htab->elf.dynobj;
3d4d4302 5345 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 5346 abed = get_elf_i386_backend_data (output_bfd);
252b5132 5347
ebe50bae 5348 if (htab->elf.dynamic_sections_created)
252b5132 5349 {
252b5132
RH		 5350 Elf32_External_Dyn *dyncon, *dynconend;
5351
6de2ae4a 5352 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 5353 abort ();
252b5132
RH		 5354
5355 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 5356 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 5357 for (; dyncon < dynconend; dyncon++)
5358 {
5359 Elf_Internal_Dyn dyn;
51b64d56 5360 asection *s;
252b5132
RH		 5361
5362 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5363
5364 switch (dyn.d_tag)
5365 {
5366 default:
25e762b9
RM		 5367 if (abed->is_vxworks
5368 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 5369 break;
0ac8d2ca 5370 continue;
252b5132
RH		 5371
5372 case DT_PLTGOT:
6de2ae4a 5373 s = htab->elf.sgotplt;
8c37241b 5374 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 5375 break;
5376
252b5132 5377 case DT_JMPREL:
6de2ae4a 5378 s = htab->elf.srelplt;
6348e046 5379 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 5380 break;
5381
5382 case DT_PLTRELSZ:
6de2ae4a 5383 s = htab->elf.srelplt;
eea6121a 5384 dyn.d_un.d_val = s->size;
252b5132
RH		 5385 break;
5386
5387 case DT_RELSZ:
5388 /* My reading of the SVR4 ABI indicates that the
5389 procedure linkage table relocs (DT_JMPREL) should be
5390 included in the overall relocs (DT_REL). This is
5391 what Solaris does. However, UnixWare can not handle
5392 that case. Therefore, we override the DT_RELSZ entry
6348e046 5393 here to make it not include the JMPREL relocs. */
6de2ae4a 5394 s = htab->elf.srelplt;
6348e046
AM		 5395 if (s == NULL)
5396 continue;
eea6121a 5397 dyn.d_un.d_val -= s->size;
6348e046
AM		 5398 break;
5399
5400 case DT_REL:
5401 /* We may not be using the standard ELF linker script.
5402 If .rel.plt is the first .rel section, we adjust
5403 DT_REL to not include it. */
6de2ae4a 5404 s = htab->elf.srelplt;
6348e046
AM		 5405 if (s == NULL)
5406 continue;
5407 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
5408 continue;
eea6121a 5409 dyn.d_un.d_ptr += s->size;
252b5132
RH		 5410 break;
5411 }
0ac8d2ca
AM		 5412
5413 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 5414 }
5415
5416 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 5417 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132 5418 {
0e1862bb 5419 if (bfd_link_pic (info))
eac338cf 5420 {
25e762b9
RM		 5421 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
5422 abed->plt->plt0_entry_size);
5423 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5424 abed->plt0_pad_byte,
5425 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 5426 }
252b5132
RH		 5427 else
5428 {
25e762b9
RM		 5429 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
5430 abed->plt->plt0_entry_size);
5431 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5432 abed->plt0_pad_byte,
5433 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 5434 bfd_put_32 (output_bfd,
6de2ae4a
L		 5435 (htab->elf.sgotplt->output_section->vma
5436 + htab->elf.sgotplt->output_offset
6725bdbf 5437 + 4),
25e762b9
RM		 5438 htab->elf.splt->contents
5439 + abed->plt->plt0_got1_offset);
252b5132 5440 bfd_put_32 (output_bfd,
6de2ae4a
L		 5441 (htab->elf.sgotplt->output_section->vma
5442 + htab->elf.sgotplt->output_offset
6725bdbf 5443 + 8),
25e762b9
RM		 5444 htab->elf.splt->contents
5445 + abed->plt->plt0_got2_offset);
eac338cf 5446
25e762b9 5447 if (abed->is_vxworks)
eac338cf
PB		 5448 {
5449 Elf_Internal_Rela rel;
7325306f 5450
eac338cf
PB		 5451 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
5452 On IA32 we use REL relocations so the addend goes in
5453 the PLT directly. */
6de2ae4a
L		 5454 rel.r_offset = (htab->elf.splt->output_section->vma
5455 + htab->elf.splt->output_offset
25e762b9 5456 + abed->plt->plt0_got1_offset);
7325306f 5457 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5458 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5459 htab->srelplt2->contents);
5460 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 5461 rel.r_offset = (htab->elf.splt->output_section->vma
5462 + htab->elf.splt->output_offset
25e762b9 5463 + abed->plt->plt0_got2_offset);
7325306f 5464 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5465 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5466 htab->srelplt2->contents +
5467 sizeof (Elf32_External_Rel));
5468 }
252b5132
RH		 5469 }
5470
5471 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5472 really seem like the right value. */
6de2ae4a 5473 elf_section_data (htab->elf.splt->output_section)
6725bdbf 5474 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 5475
5476 /* Correct the .rel.plt.unloaded relocations. */
0e1862bb 5477 if (abed->is_vxworks && !bfd_link_pic (info))
eac338cf 5478 {
25e762b9
RM		 5479 int num_plts = (htab->elf.splt->size
5480 / abed->plt->plt_entry_size) - 1;
4c9b0de6 5481 unsigned char *p;
eac338cf
PB		 5482
5483 p = htab->srelplt2->contents;
0e1862bb 5484 if (bfd_link_pic (info))
eac338cf
PB		 5485 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5486 else
5487 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5488
5489 for (; num_plts; num_plts--)
5490 {
5491 Elf_Internal_Rela rel;
5492 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5493 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5494 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5495 p += sizeof (Elf32_External_Rel);
5496
5497 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5498 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 5499 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5500 p += sizeof (Elf32_External_Rel);
5501 }
5502 }
252b5132
RH		 5503 }
5504 }
5505
6de2ae4a 5506 if (htab->elf.sgotplt)
252b5132 5507 {
56d4289c
L		 5508 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5509 {
5510 (*_bfd_error_handler)
5511 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5512 return FALSE;
5513 }
5514
12d0ee4a 5515 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5516 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 5517 {
5518 bfd_put_32 (output_bfd,
55fd94b0 5519 (sdyn == NULL ? 0
12d0ee4a 5520 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 5521 htab->elf.sgotplt->contents);
5522 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5523 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 5524 }
252b5132 5525
6de2ae4a 5526 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5527 }
8c37241b 5528
e41b3a13 5529 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5530 if (htab->plt_eh_frame != NULL
5531 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5532 {
5533 if (htab->elf.splt != NULL
5534 && htab->elf.splt->size != 0
5535 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5536 && htab->elf.splt->output_section != NULL
5537 && htab->plt_eh_frame->output_section != NULL)
5538 {
5539 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5540 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5541 + htab->plt_eh_frame->output_offset
5542 + PLT_FDE_START_OFFSET;
5543 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5544 htab->plt_eh_frame->contents
5545 + PLT_FDE_START_OFFSET);
5546 }
5547 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5548 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5549 {
5550 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5551 htab->plt_eh_frame,
5552 htab->plt_eh_frame->contents))
5553 return FALSE;
5554 }
5555 }
5556
6de2ae4a
L		 5557 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5558 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5559
c25bc9fc
L		 5560 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5561 htab_traverse (htab->loc_hash_table,
5562 elf_i386_finish_local_dynamic_symbol,
5563 info);
5564
b34976b6 5565 return TRUE;
252b5132
RH		 5566}
5567
3972882e 5568/* Return an array of PLT entry symbol values. */
4c45e5c9 5569
3972882e
L		 5570static bfd_vma *
5571elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5572 asection *relplt)
4c45e5c9 5573{
3972882e
L		 5574 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5575 arelent *p;
5576 long count, i;
5577 bfd_vma *plt_sym_val;
144bed8d 5578 bfd_vma plt_offset;
3972882e
L		 5579 bfd_byte *plt_contents;
5580 const struct elf_i386_backend_data *bed
5581 = get_elf_i386_backend_data (abfd);
5582 Elf_Internal_Shdr *hdr;
5583
5584 /* Get the .plt section contents. */
5585 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5586 if (plt_contents == NULL)
5587 return NULL;
5588 if (!bfd_get_section_contents (abfd, (asection *) plt,
5589 plt_contents, 0, plt->size))
5590 {
5591bad_return:
5592 free (plt_contents);
5593 return NULL;
5594 }
144bed8d 5595
3972882e
L		 5596 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5597 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5598 goto bad_return;
144bed8d 5599
3972882e
L		 5600 hdr = &elf_section_data (relplt)->this_hdr;
5601 count = relplt->size / hdr->sh_entsize;
5602
5603 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5604 if (plt_sym_val == NULL)
5605 goto bad_return;
cca5b8b6 5606
35181b3e 5607 for (i = 0; i < count; i++)
3972882e 5608 plt_sym_val[i] = -1;
cca5b8b6 5609
3972882e
L		 5610 plt_offset = bed->plt->plt_entry_size;
5611 p = relplt->relocation;
5612 for (i = 0; i < count; i++, p++)
144bed8d 5613 {
3972882e
L		 5614 long reloc_index;
5615
6f25f223 5616 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
533d0af0 5617 if (p->howto == NULL)
6f25f223 5618 continue;
533d0af0
L		 5619
5620 if (p->howto->type != R_386_JUMP_SLOT
5621 && p->howto->type != R_386_IRELATIVE)
3972882e
L		 5622 continue;
5623
5624 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
5625 + bed->plt->plt_reloc_offset));
5626 reloc_index /= sizeof (Elf32_External_Rel);
5627 if (reloc_index >= count)
5628 abort ();
5629 plt_sym_val[reloc_index] = plt->vma + plt_offset;
144bed8d 5630 plt_offset += bed->plt->plt_entry_size;
fca6ae69
L		 5631
5632 /* PR binutils/18437: Skip extra relocations in the .rel.plt
5633 section. */
5634 if (plt_offset >= plt->size)
5635 break;
144bed8d
L		 5636 }
5637
3972882e
L		 5638 free (plt_contents);
5639
5640 return plt_sym_val;
5641}
5642
5643/* Similar to _bfd_elf_get_synthetic_symtab. */
5644
5645static long
5646elf_i386_get_synthetic_symtab (bfd *abfd,
5647 long symcount,
5648 asymbol **syms,
5649 long dynsymcount,
5650 asymbol **dynsyms,
5651 asymbol **ret)
5652{
5653 asection *plt = bfd_get_section_by_name (abfd, ".plt");
5654 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
5655 dynsymcount, dynsyms, ret,
5656 plt,
5657 elf_i386_get_plt_sym_val);
4c45e5c9
JJ		 5658}
5659
fdc90cb4
JJ		 5660/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5661
5662static bfd_boolean
5663elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5664{
5665 if (h->plt.offset != (bfd_vma) -1
5666 && !h->def_regular
5667 && !h->pointer_equality_needed)
5668 return FALSE;
5669
5670 return _bfd_elf_hash_symbol (h);
5671}
4c45e5c9 5672
d8045f23
NC		 5673/* Hook called by the linker routine which adds symbols from an object
5674 file. */
5675
5676static bfd_boolean
c16153ae 5677elf_i386_add_symbol_hook (bfd * abfd,
f1885d1e 5678 struct bfd_link_info * info,
d8045f23
NC		 5679 Elf_Internal_Sym * sym,
5680 const char ** namep ATTRIBUTE_UNUSED,
5681 flagword * flagsp ATTRIBUTE_UNUSED,
5682 asection ** secp ATTRIBUTE_UNUSED,
5683 bfd_vma * valp ATTRIBUTE_UNUSED)
5684{
13a2df29 5685 if (ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE
f1885d1e
AM		 5686 && (abfd->flags & DYNAMIC) == 0
5687 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
13a2df29
L		 5688 elf_tdata (info->output_bfd)->has_gnu_symbols
5689 |= elf_gnu_symbol_unique;
d8045f23
NC		 5690
5691 return TRUE;
5692}
5693
6d00b590 5694#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 5695#define TARGET_LITTLE_NAME "elf32-i386"
5696#define ELF_ARCH bfd_arch_i386
ae95ffa6 5697#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5698#define ELF_MACHINE_CODE EM_386
5699#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5700
5701#define elf_backend_can_gc_sections 1
51b64d56 5702#define elf_backend_can_refcount 1
252b5132
RH		 5703#define elf_backend_want_got_plt 1
5704#define elf_backend_plt_readonly 1
5705#define elf_backend_want_plt_sym 0
5706#define elf_backend_got_header_size 12
e41b3a13 5707#define elf_backend_plt_alignment 4
f7483970 5708#define elf_backend_extern_protected_data 1
252b5132 5709
8c29f035
AM		 5710/* Support RELA for objdump of prelink objects. */
5711#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5712#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5713
13ae64f3 5714#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5715
dd5724d5
AM		 5716#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5717#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
5718#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5719#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 5720#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5
AM		 5721
5722#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5723#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5724#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5725#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5726#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5727#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5728#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5729#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5730#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5731#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5732#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5733#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5734#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5735#define elf_backend_relocate_section elf_i386_relocate_section
5736#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5737#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5738#define elf_backend_omit_section_dynsym \
5739 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
fdc90cb4 5740#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23 5741#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
dd5724d5 5742
252b5132 5743#include "elf32-target.h"
2bc3c89a
AM		 5744
5745/* FreeBSD support. */
5746
5747#undef TARGET_LITTLE_SYM
6d00b590 5748#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 5749#undef TARGET_LITTLE_NAME
5750#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5751#undef ELF_OSABI
5752#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5753
5754/* The kernel recognizes executables as valid only if they carry a
5755 "FreeBSD" label in the ELF header. So we put this label on all
5756 executables and (for simplicity) also all other object files. */
5757
2bc3c89a 5758static void
d8045f23 5759elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5760{
78245035 5761 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 5762
2bc3c89a 5763#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 5764 {
5765 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5766 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
5767 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
5768 }
caf47ea6 5769#endif
2bc3c89a
AM		 5770}
5771
5772#undef elf_backend_post_process_headers
d8045f23 5773#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5774#undef elf32_bed
5775#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5776
d8045f23
NC		 5777#undef elf_backend_add_symbol_hook
5778
2bc3c89a 5779#include "elf32-target.h"
eac338cf 5780
a6cc6b3b
RO		 5781/* Solaris 2. */
5782
5783#undef TARGET_LITTLE_SYM
6d00b590 5784#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 5785#undef TARGET_LITTLE_NAME
5786#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5787
914082d1
L		 5788#undef elf_backend_post_process_headers
5789
a6cc6b3b
RO		 5790/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5791 objects won't be recognized. */
5792#undef ELF_OSABI
5793
5794#undef elf32_bed
5795#define elf32_bed elf32_i386_sol2_bed
5796
7dc98aea
RO		 5797/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5798 boundary. */
5799#undef elf_backend_static_tls_alignment
5800#define elf_backend_static_tls_alignment 8
5801
a6cc6b3b
RO		 5802/* The Solaris 2 ABI requires a plt symbol on all platforms.
5803
5804 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5805 File, p.63. */
5806#undef elf_backend_want_plt_sym
5807#define elf_backend_want_plt_sym 1
5808
5809#include "elf32-target.h"
5810
bf64a951
L		 5811/* Intel MCU support. */
5812
5813static bfd_boolean
5814elf32_iamcu_elf_object_p (bfd *abfd)
5815{
5816 /* Set the right machine number for an IAMCU elf32 file. */
5817 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
5818 return TRUE;
5819}
5820
5821#undef TARGET_LITTLE_SYM
5822#define TARGET_LITTLE_SYM iamcu_elf32_vec
5823#undef TARGET_LITTLE_NAME
5824#define TARGET_LITTLE_NAME "elf32-iamcu"
5825#undef ELF_ARCH
5826#define ELF_ARCH bfd_arch_iamcu
5827
5828#undef ELF_MACHINE_CODE
5829#define ELF_MACHINE_CODE EM_IAMCU
5830
5831#undef ELF_OSABI
5832
5833#undef elf32_bed
5834#define elf32_bed elf32_iamcu_bed
5835
5836#undef elf_backend_object_p
5837#define elf_backend_object_p elf32_iamcu_elf_object_p
5838
5839#undef elf_backend_static_tls_alignment
5840
5841#undef elf_backend_want_plt_sym
5842#define elf_backend_want_plt_sym 0
5843
5844#include "elf32-target.h"
5845
5846/* Restore defaults. */
5847#undef ELF_ARCH
5848#define ELF_ARCH bfd_arch_i386
5849#undef ELF_MACHINE_CODE
5850#define ELF_MACHINE_CODE EM_386
5851
a27e4371
RM		 5852/* Native Client support. */
5853
5854#undef TARGET_LITTLE_SYM
6d00b590 5855#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 5856#undef TARGET_LITTLE_NAME
5857#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5858#undef elf32_bed
5859#define elf32_bed elf32_i386_nacl_bed
5860
5861#undef ELF_MAXPAGESIZE
5862#define ELF_MAXPAGESIZE 0x10000
5863
5864/* Restore defaults. */
5865#undef ELF_OSABI
5866#undef elf_backend_want_plt_sym
5867#define elf_backend_want_plt_sym 0
5868#undef elf_backend_post_process_headers
a27e4371
RM		 5869#undef elf_backend_static_tls_alignment
5870
5871/* NaCl uses substantially different PLT entries for the same effects. */
5872
5873#undef elf_backend_plt_alignment
5874#define elf_backend_plt_alignment 5
5875#define NACL_PLT_ENTRY_SIZE 64
5876#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5877
5878static const bfd_byte elf_i386_nacl_plt0_entry[] =
5879 {
5880 0xff, 0x35, /* pushl contents of address */
5881 0, 0, 0, 0, /* replaced with address of .got + 4. */
5882 0x8b, 0x0d, /* movl contents of address, %ecx */
5883 0, 0, 0, 0, /* replaced with address of .got + 8. */
5884 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5885 0xff, 0xe1 /* jmp *%ecx */
5886 };
5887
5888static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5889 {
5890 0x8b, 0x0d, /* movl contents of address, %ecx */
5891 0, 0, 0, 0, /* replaced with GOT slot address. */
5892 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5893 0xff, 0xe1, /* jmp *%ecx */
5894
5895 /* Pad to the next 32-byte boundary with nop instructions. */
5896 0x90,
5897 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5898 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5899
5900 /* Lazy GOT entries point here (32-byte aligned). */
5901 0x68, /* pushl immediate */
5902 0, 0, 0, 0, /* replaced with reloc offset. */
5903 0xe9, /* jmp relative */
5904 0, 0, 0, 0, /* replaced with offset to .plt. */
5905
5906 /* Pad to the next 32-byte boundary with nop instructions. */
5907 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5908 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5909 0x90, 0x90
5910 };
5911
5912static const bfd_byte
5913elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5914 {
5915 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5916 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5917 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5918 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5919
5920 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5921 so pad to that size with nop instructions. */
5922 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5923 };
5924
5925static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5926 {
5927 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5928 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5929 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5930 0xff, 0xe1, /* jmp *%ecx */
5931
5932 /* Pad to the next 32-byte boundary with nop instructions. */
5933 0x90,
5934 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5935 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5936
5937 /* Lazy GOT entries point here (32-byte aligned). */
5938 0x68, /* pushl immediate */
5939 0, 0, 0, 0, /* replaced with offset into relocation table. */
5940 0xe9, /* jmp relative */
5941 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5942
5943 /* Pad to the next 32-byte boundary with nop instructions. */
5944 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5945 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5946 0x90, 0x90
5947 };
5948
5949static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5950 {
5951#if (PLT_CIE_LENGTH != 20 \
5952 || PLT_FDE_LENGTH != 36 \
5953 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5954 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5955# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5956#endif
5957 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5958 0, 0, 0, 0, /* CIE ID */
5959 1, /* CIE version */
5960 'z', 'R', 0, /* Augmentation string */
5961 1, /* Code alignment factor */
5962 0x7c, /* Data alignment factor: -4 */
5963 8, /* Return address column */
5964 1, /* Augmentation size */
5965 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5966 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5967 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5968 DW_CFA_nop, DW_CFA_nop,
5969
5970 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5971 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5972 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5973 0, 0, 0, 0, /* .plt size goes here */
5974 0, /* Augmentation size */
5975 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5976 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5977 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5978 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5979 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5980 13, /* Block length */
5981 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5982 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5983 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5984 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5985 DW_CFA_nop, DW_CFA_nop
5986 };
5987
5988static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5989 {
5990 elf_i386_nacl_plt0_entry, /* plt0_entry */
5991 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5992 2, /* plt0_got1_offset */
5993 8, /* plt0_got2_offset */
5994 elf_i386_nacl_plt_entry, /* plt_entry */
5995 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5996 2, /* plt_got_offset */
5997 33, /* plt_reloc_offset */
5998 38, /* plt_plt_offset */
5999 32, /* plt_lazy_offset */
6000 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
6001 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
6002 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
6003 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
6004 };
6005
6006static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
6007 {
6008 &elf_i386_nacl_plt, /* plt */
6009 0x90, /* plt0_pad_byte: nop insn */
6010 0, /* is_vxworks */
6011 };
6012
64b384e1
RM		 6013static bfd_boolean
6014elf32_i386_nacl_elf_object_p (bfd *abfd)
6015{
6016 /* Set the right machine number for a NaCl i386 ELF32 file. */
6017 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
6018 return TRUE;
6019}
6020
a27e4371
RM		 6021#undef elf_backend_arch_data
6022#define elf_backend_arch_data &elf_i386_nacl_arch_bed
6023
64b384e1
RM		 6024#undef elf_backend_object_p
6025#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 6026#undef elf_backend_modify_segment_map
6027#define elf_backend_modify_segment_map nacl_modify_segment_map
6028#undef elf_backend_modify_program_headers
6029#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 6030#undef elf_backend_final_write_processing
6031#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 6032
a27e4371
RM		 6033#include "elf32-target.h"
6034
5a68afcf 6035/* Restore defaults. */
64b384e1 6036#undef elf_backend_object_p
5a68afcf
RM		 6037#undef elf_backend_modify_segment_map
6038#undef elf_backend_modify_program_headers
887badb3 6039#undef elf_backend_final_write_processing
5a68afcf 6040
eac338cf
PB		 6041/* VxWorks support. */
6042
6043#undef TARGET_LITTLE_SYM
6d00b590 6044#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 6045#undef TARGET_LITTLE_NAME
6046#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 6047#undef ELF_OSABI
a27e4371
RM		 6048#undef elf_backend_plt_alignment
6049#define elf_backend_plt_alignment 4
eac338cf 6050
23209a78
RM		 6051static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
6052 {
25e762b9 6053 &elf_i386_plt, /* plt */
23209a78
RM		 6054 0x90, /* plt0_pad_byte */
6055 1, /* is_vxworks */
6056 };
eac338cf 6057
23209a78
RM		 6058#undef elf_backend_arch_data
6059#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 6060
13285a1b 6061#undef elf_backend_relocs_compatible
eac338cf
PB		 6062#undef elf_backend_add_symbol_hook
6063#define elf_backend_add_symbol_hook \
6064 elf_vxworks_add_symbol_hook
6065#undef elf_backend_link_output_symbol_hook
6066#define elf_backend_link_output_symbol_hook \
9c72ff84 6067 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 6068#undef elf_backend_emit_relocs
6069#define elf_backend_emit_relocs elf_vxworks_emit_relocs
6070#undef elf_backend_final_write_processing
6071#define elf_backend_final_write_processing \
6072 elf_vxworks_final_write_processing
7dc98aea 6073#undef elf_backend_static_tls_alignment
eac338cf
PB		 6074
6075/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
6076 define it. */
6077#undef elf_backend_want_plt_sym
6078#define elf_backend_want_plt_sym 1
6079
6080#undef elf32_bed
6081#define elf32_bed elf32_i386_vxworks_bed
6082
6083#include "elf32-target.h"
GDB Binutils - Deliverables
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