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powerpc: Support z-point type in gdbserver.
[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
6f2750fe 2 Copyright (C) 1993-2016 Free Software Foundation, Inc.
252b5132 3
571fe01f 4 This file is part of BFD, the Binary File Descriptor library.
252b5132 5
571fe01f
NC		 6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
cd123cb7 8 the Free Software Foundation; either version 3 of the License, or
571fe01f 9 (at your option) any later version.
252b5132 10
571fe01f
NC		 11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
252b5132 15
571fe01f
NC		 16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
cd123cb7
NC		 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
252b5132 20
252b5132 21#include "sysdep.h"
3db64b00 22#include "bfd.h"
252b5132
RH		 23#include "bfdlink.h"
24#include "libbfd.h"
25#include "elf-bfd.h"
5a68afcf 26#include "elf-nacl.h"
eac338cf 27#include "elf-vxworks.h"
142411ca 28#include "bfd_stdint.h"
c25bc9fc
L		 29#include "objalloc.h"
30#include "hashtab.h"
e41b3a13 31#include "dwarf2.h"
02a86693 32#include "opcode/i386.h"
252b5132 33
55fd94b0
AM		 34/* 386 uses REL relocations instead of RELA. */
35#define USE_REL 1
252b5132
RH		 36
37#include "elf/i386.h"
38
39static reloc_howto_type elf_howto_table[]=
40{
6346d5ca 41 HOWTO(R_386_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
1b452ec6 42 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 43 TRUE, 0x00000000, 0x00000000, FALSE),
44 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 45 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 46 TRUE, 0xffffffff, 0xffffffff, FALSE),
47 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 48 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 49 TRUE, 0xffffffff, 0xffffffff, TRUE),
50 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 51 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 52 TRUE, 0xffffffff, 0xffffffff, FALSE),
53 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 54 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 55 TRUE, 0xffffffff, 0xffffffff, TRUE),
56 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 57 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 58 TRUE, 0xffffffff, 0xffffffff, FALSE),
59 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 60 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 61 TRUE, 0xffffffff, 0xffffffff, FALSE),
62 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 63 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 64 TRUE, 0xffffffff, 0xffffffff, FALSE),
65 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 66 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 67 TRUE, 0xffffffff, 0xffffffff, FALSE),
68 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 69 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 70 TRUE, 0xffffffff, 0xffffffff, FALSE),
71 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 72 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 73 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 74
dc47f327
AM		 75 /* We have a gap in the reloc numbers here.
76 R_386_standard counts the number up to this point, and
77 R_386_ext_offset is the value to subtract from a reloc type of
78 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 79#define R_386_standard (R_386_GOTPC + 1)
80#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 81
37e55690 82 /* These relocs are a GNU extension. */
b34976b6 83 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 84 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 85 TRUE, 0xffffffff, 0xffffffff, FALSE),
86 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 87 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 88 TRUE, 0xffffffff, 0xffffffff, FALSE),
89 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 90 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 91 TRUE, 0xffffffff, 0xffffffff, FALSE),
92 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 93 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 94 TRUE, 0xffffffff, 0xffffffff, FALSE),
95 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 96 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 97 TRUE, 0xffffffff, 0xffffffff, FALSE),
98 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 99 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 100 TRUE, 0xffffffff, 0xffffffff, FALSE),
101 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 102 bfd_elf_generic_reloc, "R_386_16",
b34976b6 103 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 104 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 105 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 106 TRUE, 0xffff, 0xffff, TRUE),
107 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 108 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 109 TRUE, 0xff, 0xff, FALSE),
110 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 111 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 112 TRUE, 0xff, 0xff, TRUE),
dc47f327 113
55fd94b0
AM		 114#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
115#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 116 /* These are common with Solaris TLS implementation. */
b34976b6 117 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 118 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 119 TRUE, 0xffffffff, 0xffffffff, FALSE),
120 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 121 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 122 TRUE, 0xffffffff, 0xffffffff, FALSE),
123 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 124 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 125 TRUE, 0xffffffff, 0xffffffff, FALSE),
126 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 127 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 128 TRUE, 0xffffffff, 0xffffffff, FALSE),
129 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 130 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 131 TRUE, 0xffffffff, 0xffffffff, FALSE),
132 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 133 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 134 TRUE, 0xffffffff, 0xffffffff, FALSE),
1788fc08
L		 135 HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
136 bfd_elf_generic_reloc, "R_386_SIZE32",
137 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 138 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
139 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
140 TRUE, 0xffffffff, 0xffffffff, FALSE),
141 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
142 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
143 FALSE, 0, 0, FALSE),
144 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
145 bfd_elf_generic_reloc, "R_386_TLS_DESC",
146 TRUE, 0xffffffff, 0xffffffff, FALSE),
cbe950e9
L		 147 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
148 bfd_elf_generic_reloc, "R_386_IRELATIVE",
149 TRUE, 0xffffffff, 0xffffffff, FALSE),
02a86693
L		 150 HOWTO(R_386_GOT32X, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
151 bfd_elf_generic_reloc, "R_386_GOT32X",
152 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 153
154 /* Another gap. */
02a86693 155#define R_386_ext2 (R_386_GOT32X + 1 - R_386_tls_offset)
c74be520 156#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_ext2)
252b5132
RH		 157
158/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 159 HOWTO (R_386_GNU_VTINHERIT, /* type */
160 0, /* rightshift */
161 2, /* size (0 = byte, 1 = short, 2 = long) */
162 0, /* bitsize */
b34976b6 163 FALSE, /* pc_relative */
252b5132
RH		 164 0, /* bitpos */
165 complain_overflow_dont, /* complain_on_overflow */
166 NULL, /* special_function */
167 "R_386_GNU_VTINHERIT", /* name */
b34976b6 168 FALSE, /* partial_inplace */
252b5132
RH		 169 0, /* src_mask */
170 0, /* dst_mask */
b34976b6 171 FALSE), /* pcrel_offset */
252b5132
RH		 172
173/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 174 HOWTO (R_386_GNU_VTENTRY, /* type */
175 0, /* rightshift */
176 2, /* size (0 = byte, 1 = short, 2 = long) */
177 0, /* bitsize */
b34976b6 178 FALSE, /* pc_relative */
252b5132
RH		 179 0, /* bitpos */
180 complain_overflow_dont, /* complain_on_overflow */
181 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
182 "R_386_GNU_VTENTRY", /* name */
b34976b6 183 FALSE, /* partial_inplace */
252b5132
RH		 184 0, /* src_mask */
185 0, /* dst_mask */
b34976b6 186 FALSE) /* pcrel_offset */
dc47f327 187
55fd94b0 188#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 189
190};
191
252b5132 192#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 193#define TRACE(str) \
194 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 195#else
196#define TRACE(str)
197#endif
198
199static reloc_howto_type *
55fd94b0
AM		 200elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
201 bfd_reloc_code_real_type code)
252b5132
RH		 202{
203 switch (code)
204 {
205 case BFD_RELOC_NONE:
206 TRACE ("BFD_RELOC_NONE");
55fd94b0 207 return &elf_howto_table[R_386_NONE];
252b5132
RH		 208
209 case BFD_RELOC_32:
210 TRACE ("BFD_RELOC_32");
55fd94b0 211 return &elf_howto_table[R_386_32];
252b5132
RH		 212
213 case BFD_RELOC_CTOR:
214 TRACE ("BFD_RELOC_CTOR");
55fd94b0 215 return &elf_howto_table[R_386_32];
252b5132
RH		 216
217 case BFD_RELOC_32_PCREL:
218 TRACE ("BFD_RELOC_PC32");
55fd94b0 219 return &elf_howto_table[R_386_PC32];
252b5132
RH		 220
221 case BFD_RELOC_386_GOT32:
222 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 223 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 224
225 case BFD_RELOC_386_PLT32:
226 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 227 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 228
229 case BFD_RELOC_386_COPY:
230 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 231 return &elf_howto_table[R_386_COPY];
252b5132
RH		 232
233 case BFD_RELOC_386_GLOB_DAT:
234 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 235 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 236
237 case BFD_RELOC_386_JUMP_SLOT:
238 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 239 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 240
241 case BFD_RELOC_386_RELATIVE:
242 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 243 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 244
245 case BFD_RELOC_386_GOTOFF:
246 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 247 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 248
249 case BFD_RELOC_386_GOTPC:
250 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 251 return &elf_howto_table[R_386_GOTPC];
252b5132 252
37e55690
JJ		 253 /* These relocs are a GNU extension. */
254 case BFD_RELOC_386_TLS_TPOFF:
255 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 256 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 257
258 case BFD_RELOC_386_TLS_IE:
259 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 260 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 261
262 case BFD_RELOC_386_TLS_GOTIE:
263 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 264 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 265
13ae64f3
JJ		 266 case BFD_RELOC_386_TLS_LE:
267 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 268 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 269
270 case BFD_RELOC_386_TLS_GD:
271 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 272 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 273
274 case BFD_RELOC_386_TLS_LDM:
275 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 276 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 277
252b5132
RH		 278 case BFD_RELOC_16:
279 TRACE ("BFD_RELOC_16");
55fd94b0 280 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 281
282 case BFD_RELOC_16_PCREL:
283 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 284 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 285
286 case BFD_RELOC_8:
287 TRACE ("BFD_RELOC_8");
55fd94b0 288 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 289
290 case BFD_RELOC_8_PCREL:
291 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 292 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 293
13ae64f3
JJ		 294 /* Common with Sun TLS implementation. */
295 case BFD_RELOC_386_TLS_LDO_32:
296 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 297 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 298
299 case BFD_RELOC_386_TLS_IE_32:
300 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 301 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 302
303 case BFD_RELOC_386_TLS_LE_32:
304 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 305 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 306
307 case BFD_RELOC_386_TLS_DTPMOD32:
308 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 309 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 310
311 case BFD_RELOC_386_TLS_DTPOFF32:
312 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 313 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 314
315 case BFD_RELOC_386_TLS_TPOFF32:
316 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 317 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 318
1788fc08
L		 319 case BFD_RELOC_SIZE32:
320 TRACE ("BFD_RELOC_SIZE32");
321 return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset];
322
67a4f2b7
AO		 323 case BFD_RELOC_386_TLS_GOTDESC:
324 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
325 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
326
327 case BFD_RELOC_386_TLS_DESC_CALL:
328 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
329 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
330
331 case BFD_RELOC_386_TLS_DESC:
332 TRACE ("BFD_RELOC_386_TLS_DESC");
333 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
334
cbe950e9
L		 335 case BFD_RELOC_386_IRELATIVE:
336 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 337 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 338
02a86693
L		 339 case BFD_RELOC_386_GOT32X:
340 TRACE ("BFD_RELOC_386_GOT32X");
341 return &elf_howto_table[R_386_GOT32X - R_386_tls_offset];
342
252b5132
RH		 343 case BFD_RELOC_VTABLE_INHERIT:
344 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 345 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 346
347 case BFD_RELOC_VTABLE_ENTRY:
348 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 349 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 350
351 default:
352 break;
353 }
354
355 TRACE ("Unknown");
356 return 0;
357}
358
157090f7
AM		 359static reloc_howto_type *
360elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
361 const char *r_name)
362{
363 unsigned int i;
364
365 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
366 if (elf_howto_table[i].name != NULL
367 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
368 return &elf_howto_table[i];
369
370 return NULL;
371}
372
142411ca
L		 373static reloc_howto_type *
374elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 375{
dc47f327
AM		 376 unsigned int indx;
377
378 if ((indx = r_type) >= R_386_standard
379 && ((indx = r_type - R_386_ext_offset) - R_386_standard
380 >= R_386_ext - R_386_standard)
13ae64f3 381 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520
L		 382 >= R_386_ext2 - R_386_ext)
383 && ((indx = r_type - R_386_vt_offset) - R_386_ext2
384 >= R_386_vt - R_386_ext2))
252b5132 385 {
d003868e
AM		 386 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
387 abfd, (int) r_type);
55fd94b0 388 indx = R_386_NONE;
252b5132 389 }
06614111
NC		 390 /* PR 17512: file: 0f67f69d. */
391 if (elf_howto_table [indx].type != r_type)
392 return NULL;
142411ca
L		 393 return &elf_howto_table[indx];
394}
395
396static void
397elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
398 arelent *cache_ptr,
399 Elf_Internal_Rela *dst)
400{
401 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
402 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH		 403}
404
405/* Return whether a symbol name implies a local label. The UnixWare
406 2.1 cc generates temporary symbols that start with .X, so we
407 recognize them here. FIXME: do other SVR4 compilers also use .X?.
408 If so, we should move the .X recognition into
409 _bfd_elf_is_local_label_name. */
410
b34976b6 411static bfd_boolean
55fd94b0 412elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 413{
414 if (name[0] == '.' && name[1] == 'X')
b34976b6 415 return TRUE;
252b5132
RH		 416
417 return _bfd_elf_is_local_label_name (abfd, name);
418}
419\f
38701953 420/* Support for core dump NOTE sections. */
61adc1a4 421
b34976b6 422static bfd_boolean
55fd94b0 423elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 424{
425 int offset;
eea6121a 426 size_t size;
38701953 427
61adc1a4 428 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 429 {
61adc1a4
NC		 430 int pr_version = bfd_get_32 (abfd, note->descdata);
431
432 if (pr_version != 1)
433 return FALSE;
434
435 /* pr_cursig */
228e534f 436 elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20);
61adc1a4
NC		 437
438 /* pr_pid */
228e534f 439 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC		 440
441 /* pr_reg */
442 offset = 28;
eea6121a 443 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 444 }
445 else
446 {
447 switch (note->descsz)
448 {
449 default:
450 return FALSE;
38701953 451
61adc1a4
NC		 452 case 144: /* Linux/i386 */
453 /* pr_cursig */
228e534f 454 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 455
61adc1a4 456 /* pr_pid */
228e534f 457 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 458
61adc1a4
NC		 459 /* pr_reg */
460 offset = 72;
eea6121a 461 size = 68;
38701953 462
61adc1a4
NC		 463 break;
464 }
38701953
AM		 465 }
466
467 /* Make a ".reg/999" section. */
468 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 469 size, note->descpos + offset);
38701953
AM		 470}
471
b34976b6 472static bfd_boolean
55fd94b0 473elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 474{
61adc1a4 475 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 476 {
61adc1a4
NC		 477 int pr_version = bfd_get_32 (abfd, note->descdata);
478
479 if (pr_version != 1)
b34976b6 480 return FALSE;
38701953 481
228e534f 482 elf_tdata (abfd)->core->program
61adc1a4 483 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
228e534f 484 elf_tdata (abfd)->core->command
61adc1a4
NC		 485 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
486 }
487 else
488 {
489 switch (note->descsz)
490 {
491 default:
492 return FALSE;
493
494 case 124: /* Linux/i386 elf_prpsinfo. */
228e534f 495 elf_tdata (abfd)->core->pid
261b8d08 496 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 497 elf_tdata (abfd)->core->program
61adc1a4 498 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 499 elf_tdata (abfd)->core->command
61adc1a4
NC		 500 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
501 }
38701953
AM		 502 }
503
504 /* Note that for some reason, a spurious space is tacked
505 onto the end of the args in some (at least one anyway)
506 implementations, so strip it off if it exists. */
38701953 507 {
228e534f 508 char *command = elf_tdata (abfd)->core->command;
38701953
AM		 509 int n = strlen (command);
510
511 if (0 < n && command[n - 1] == ' ')
512 command[n - 1] = '\0';
513 }
514
b34976b6 515 return TRUE;
38701953
AM		 516}
517\f
518/* Functions for the i386 ELF linker.
519
520 In order to gain some understanding of code in this file without
521 knowing all the intricate details of the linker, note the
522 following:
523
524 Functions named elf_i386_* are called by external routines, other
525 functions are only called locally. elf_i386_* functions appear
526 in this file more or less in the order in which they are called
527 from external routines. eg. elf_i386_check_relocs is called
528 early in the link process, elf_i386_finish_dynamic_sections is
529 one of the last functions. */
530
252b5132
RH		 531
532/* The name of the dynamic interpreter. This is put in the .interp
533 section. */
534
535#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
536
a23b6845
AM		 537/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
538 copying dynamic variables from a shared lib into an app's dynbss
539 section, and instead use a dynamic relocation to point into the
540 shared lib. */
541#define ELIMINATE_COPY_RELOCS 1
542
252b5132
RH		 543/* The size in bytes of an entry in the procedure linkage table. */
544
545#define PLT_ENTRY_SIZE 16
546
547/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 548 this. See the SVR4 ABI i386 supplement to see how this works.
549 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 550
eac338cf 551static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 552{
553 0xff, 0x35, /* pushl contents of address */
554 0, 0, 0, 0, /* replaced with address of .got + 4. */
555 0xff, 0x25, /* jmp indirect */
eac338cf 556 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 557};
558
559/* Subsequent entries in an absolute procedure linkage table look like
560 this. */
561
562static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
563{
564 0xff, 0x25, /* jmp indirect */
565 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
566 0x68, /* pushl immediate */
567 0, 0, 0, 0, /* replaced with offset into relocation table. */
568 0xe9, /* jmp relative */
569 0, 0, 0, 0 /* replaced with offset to start of .plt. */
570};
571
eac338cf
PB		 572/* The first entry in a PIC procedure linkage table look like this.
573 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 574
eac338cf 575static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 576{
577 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 578 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 579};
580
581/* Subsequent entries in a PIC procedure linkage table look like this. */
582
583static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
584{
585 0xff, 0xa3, /* jmp *offset(%ebx) */
586 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
587 0x68, /* pushl immediate */
588 0, 0, 0, 0, /* replaced with offset into relocation table. */
589 0xe9, /* jmp relative */
590 0, 0, 0, 0 /* replaced with offset to start of .plt. */
591};
592
dd7e64d4
L		 593/* Entries in the GOT procedure linkage table look like this. */
594
595static const bfd_byte elf_i386_got_plt_entry[8] =
596{
597 0xff, 0x25, /* jmp indirect */
598 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
599 0x66, 0x90 /* xchg %ax,%ax */
600};
601
602/* Entries in the PIC GOT procedure linkage table look like this. */
603
604static const bfd_byte elf_i386_pic_got_plt_entry[8] =
605{
606 0xff, 0xa3, /* jmp *offset(%ebx) */
607 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
608 0x66, 0x90 /* xchg %ax,%ax */
609};
610
e41b3a13
JJ		 611/* .eh_frame covering the .plt section. */
612
613static const bfd_byte elf_i386_eh_frame_plt[] =
614{
615#define PLT_CIE_LENGTH 20
616#define PLT_FDE_LENGTH 36
617#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
618#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
619 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
620 0, 0, 0, 0, /* CIE ID */
621 1, /* CIE version */
622 'z', 'R', 0, /* Augmentation string */
623 1, /* Code alignment factor */
624 0x7c, /* Data alignment factor */
625 8, /* Return address column */
626 1, /* Augmentation size */
627 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
628 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
629 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
630 DW_CFA_nop, DW_CFA_nop,
631
632 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
633 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
634 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
635 0, 0, 0, 0, /* .plt size goes here */
636 0, /* Augmentation size */
637 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
638 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
639 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
640 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
641 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
642 11, /* Block length */
643 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
644 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
645 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 646 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ		 647 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
648};
649
25e762b9
RM		 650struct elf_i386_plt_layout
651{
652 /* The first entry in an absolute procedure linkage table looks like this. */
653 const bfd_byte *plt0_entry;
654 unsigned int plt0_entry_size;
655
656 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
657 unsigned int plt0_got1_offset;
658 unsigned int plt0_got2_offset;
659
660 /* Later entries in an absolute procedure linkage table look like this. */
661 const bfd_byte *plt_entry;
662 unsigned int plt_entry_size;
663
664 /* Offsets into plt_entry that are to be replaced with... */
665 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
666 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
667 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
668
669 /* Offset into plt_entry where the initial value of the GOT entry points. */
670 unsigned int plt_lazy_offset;
671
672 /* The first entry in a PIC procedure linkage table looks like this. */
673 const bfd_byte *pic_plt0_entry;
674
675 /* Subsequent entries in a PIC procedure linkage table look like this. */
676 const bfd_byte *pic_plt_entry;
677
678 /* .eh_frame covering the .plt section. */
679 const bfd_byte *eh_frame_plt;
680 unsigned int eh_frame_plt_size;
681};
682
683#define GET_PLT_ENTRY_SIZE(abfd) \
684 get_elf_i386_backend_data (abfd)->plt->plt_entry_size
685
686/* These are the standard parameters. */
687static const struct elf_i386_plt_layout elf_i386_plt =
688 {
689 elf_i386_plt0_entry, /* plt0_entry */
690 sizeof (elf_i386_plt0_entry), /* plt0_entry_size */
691 2, /* plt0_got1_offset */
692 8, /* plt0_got2_offset */
693 elf_i386_plt_entry, /* plt_entry */
694 PLT_ENTRY_SIZE, /* plt_entry_size */
695 2, /* plt_got_offset */
696 7, /* plt_reloc_offset */
697 12, /* plt_plt_offset */
698 6, /* plt_lazy_offset */
699 elf_i386_pic_plt0_entry, /* pic_plt0_entry */
700 elf_i386_pic_plt_entry, /* pic_plt_entry */
701 elf_i386_eh_frame_plt, /* eh_frame_plt */
702 sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */
703 };
704\f
705
eac338cf
PB		 706/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
707 for the PLTResolve stub and then for each PLT entry. */
708#define PLTRESOLVE_RELOCS_SHLIB 0
709#define PLTRESOLVE_RELOCS 2
710#define PLT_NON_JUMP_SLOT_RELOCS 2
711
23209a78
RM		 712/* Architecture-specific backend data for i386. */
713
714struct elf_i386_backend_data
715{
25e762b9
RM		 716 /* Parameters describing PLT generation. */
717 const struct elf_i386_plt_layout *plt;
718
23209a78
RM		 719 /* Value used to fill the unused bytes of the first PLT entry. */
720 bfd_byte plt0_pad_byte;
721
722 /* True if the target system is VxWorks. */
723 int is_vxworks;
724};
725
726#define get_elf_i386_backend_data(abfd) \
727 ((const struct elf_i386_backend_data *) \
728 get_elf_backend_data (abfd)->arch_data)
729
730/* These are the standard parameters. */
731static const struct elf_i386_backend_data elf_i386_arch_bed =
732 {
25e762b9 733 &elf_i386_plt, /* plt */
23209a78
RM		 734 0, /* plt0_pad_byte */
735 0, /* is_vxworks */
736 };
737
738#define elf_backend_arch_data &elf_i386_arch_bed
739
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 {
13f42277 2493 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2494 h->plt.offset = (bfd_vma) -1;
f5385ebf 2495 h->needs_plt = 0;
ced53ee5 2496 }
6725bdbf
AM		 2497 }
2498 else
2499 {
13f42277 2500 eh->plt_got.offset = (bfd_vma) -1;
51b64d56 2501 h->plt.offset = (bfd_vma) -1;
f5385ebf 2502 h->needs_plt = 0;
6725bdbf
AM		 2503 }
2504
67a4f2b7
AO		 2505 eh->tlsdesc_got = (bfd_vma) -1;
2506
37e55690 2507 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 2508 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2509 if (h->got.refcount > 0
0e1862bb 2510 && bfd_link_executable (info)
13ae64f3 2511 && h->dynindx == -1
37e55690 2512 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2513 h->got.offset = (bfd_vma) -1;
13ae64f3 2514 else if (h->got.refcount > 0)
6725bdbf 2515 {
0ac8d2ca 2516 asection *s;
b34976b6 2517 bfd_boolean dyn;
13ae64f3 2518 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2519
5a15f56f
AM		 2520 /* Make sure this symbol is output as a dynamic symbol.
2521 Undefined weak syms won't yet be marked as dynamic. */
2522 if (h->dynindx == -1
f5385ebf 2523 && !h->forced_local)
5a15f56f 2524 {
c152c796 2525 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2526 return FALSE;
5a15f56f
AM		 2527 }
2528
6de2ae4a 2529 s = htab->elf.sgot;
67a4f2b7
AO		 2530 if (GOT_TLS_GDESC_P (tls_type))
2531 {
6de2ae4a 2532 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2533 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2534 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 2535 h->got.offset = (bfd_vma) -2;
2536 }
2537 if (! GOT_TLS_GDESC_P (tls_type)
2538 || GOT_TLS_GD_P (tls_type))
2539 {
2540 h->got.offset = s->size;
2541 s->size += 4;
2542 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2543 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2544 s->size += 4;
2545 }
ebe50bae 2546 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2547 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 2548 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2549 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2550 need two), R_386_TLS_GD needs one if local symbol and two if
2551 global. */
2552 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2553 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2554 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2555 || (tls_type & GOT_TLS_IE))
6de2ae4a 2556 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2557 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2558 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2559 else if (! GOT_TLS_GDESC_P (tls_type)
2560 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2561 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 2562 && (bfd_link_pic (info)
ef5aade5 2563 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2564 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2565 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2566 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 2567 }
2568 else
51b64d56 2569 h->got.offset = (bfd_vma) -1;
6725bdbf 2570
5a15f56f 2571 if (eh->dyn_relocs == NULL)
b34976b6 2572 return TRUE;
5a15f56f 2573
0c715baa
AM		 2574 /* In the shared -Bsymbolic case, discard space allocated for
2575 dynamic pc-relative relocs against symbols which turn out to be
2576 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 2577 space for pc-relative relocs that have become local due to symbol
2578 visibility changes. */
0c715baa 2579
0e1862bb 2580 if (bfd_link_pic (info))
5a15f56f 2581 {
09695f56
AM		 2582 /* The only reloc that uses pc_count is R_386_PC32, which will
2583 appear on a call or on something like ".long foo - .". We
2584 want calls to protected symbols to resolve directly to the
2585 function rather than going via the plt. If people want
2586 function pointer comparisons to work as expected then they
2587 should avoid writing assembly like ".long foo - .". */
2588 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2589 {
e03a8ed8 2590 struct elf_dyn_relocs **pp;
0c715baa
AM		 2591
2592 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2593 {
c3ce498c
L		 2594 p->count -= p->pc_count;
2595 p->pc_count = 0;
0c715baa
AM		 2596 if (p->count == 0)
2597 *pp = p->next;
2598 else
2599 pp = &p->next;
2600 }
5a15f56f 2601 }
4e795f50 2602
23209a78 2603 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2604 {
e03a8ed8 2605 struct elf_dyn_relocs **pp;
3348747a
NS		 2606 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2607 {
2608 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2609 *pp = p->next;
2610 else
2611 pp = &p->next;
2612 }
2613 }
2614
4e795f50 2615 /* Also discard relocs on undefined weak syms with non-default
c353e543 2616 visibility. */
22d606e9 2617 if (eh->dyn_relocs != NULL
c353e543 2618 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 2619 {
2620 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2621 eh->dyn_relocs = NULL;
2622
2623 /* Make sure undefined weak symbols are output as a dynamic
2624 symbol in PIEs. */
2625 else if (h->dynindx == -1
2626 && !h->forced_local)
2627 {
2628 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2629 return FALSE;
2630 }
2631 }
0c715baa 2632 }
a23b6845 2633 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 2634 {
2635 /* For the non-shared case, discard space for relocs against
2636 symbols which turn out to need copy relocs or are not
04ebc307
L		 2637 dynamic. Keep dynamic relocations for run-time function
2638 pointer initialization. */
0c715baa 2639
04ebc307 2640 if ((!h->non_got_ref || eh->func_pointer_refcount > 0)
f5385ebf
AM		 2641 && ((h->def_dynamic
2642 && !h->def_regular)
ebe50bae 2643 || (htab->elf.dynamic_sections_created
0c715baa
AM		 2644 && (h->root.type == bfd_link_hash_undefweak
2645 || h->root.type == bfd_link_hash_undefined))))
2646 {
2647 /* Make sure this symbol is output as a dynamic symbol.
2648 Undefined weak syms won't yet be marked as dynamic. */
2649 if (h->dynindx == -1
f5385ebf 2650 && !h->forced_local)
0c715baa 2651 {
c152c796 2652 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2653 return FALSE;
0c715baa 2654 }
5a15f56f 2655
0c715baa
AM		 2656 /* If that succeeded, we know we'll be keeping all the
2657 relocs. */
2658 if (h->dynindx != -1)
2659 goto keep;
2660 }
2661
2662 eh->dyn_relocs = NULL;
04ebc307 2663 eh->func_pointer_refcount = 0;
0c715baa 2664
ec338859 2665 keep: ;
5a15f56f
AM		 2666 }
2667
0c715baa
AM		 2668 /* Finally, allocate space. */
2669 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2670 {
e7c33416
NC		 2671 asection *sreloc;
2672
cbe950e9 2673 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 2674
2675 BFD_ASSERT (sreloc != NULL);
eea6121a 2676 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 2677 }
2678
b34976b6 2679 return TRUE;
6725bdbf
AM		 2680}
2681
c25bc9fc
L		 2682/* Allocate space in .plt, .got and associated reloc sections for
2683 local dynamic relocs. */
2684
2685static bfd_boolean
2686elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2687{
2688 struct elf_link_hash_entry *h
2689 = (struct elf_link_hash_entry *) *slot;
2690
2691 if (h->type != STT_GNU_IFUNC
2692 || !h->def_regular
2693 || !h->ref_regular
2694 || !h->forced_local
2695 || h->root.type != bfd_link_hash_defined)
2696 abort ();
2697
2698 return elf_i386_allocate_dynrelocs (h, inf);
2699}
2700
0c715baa
AM		 2701/* Find any dynamic relocs that apply to read-only sections. */
2702
b34976b6 2703static bfd_boolean
eb4ff4d6 2704elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 2705{
2706 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2707 struct elf_dyn_relocs *p;
0c715baa 2708
aa715242
L		 2709 /* Skip local IFUNC symbols. */
2710 if (h->forced_local && h->type == STT_GNU_IFUNC)
2711 return TRUE;
2712
0c715baa
AM		 2713 eh = (struct elf_i386_link_hash_entry *) h;
2714 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2715 {
2716 asection *s = p->sec->output_section;
2717
2718 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2719 {
2720 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2721
2722 info->flags |= DF_TEXTREL;
2723
0e1862bb 2724 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 2725 || info->error_textrel)
2726 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L		 2727 p->sec->owner, h->root.root.string,
2728 p->sec);
2729
0c715baa 2730 /* Not an error, just cut short the traversal. */
b34976b6 2731 return FALSE;
0c715baa
AM		 2732 }
2733 }
b34976b6 2734 return TRUE;
0c715baa
AM		 2735}
2736
02a86693
L		 2737/* With the local symbol, foo, we convert
2738 mov foo@GOT[(%reg1)], %reg2
2739 to
2740 lea foo[@GOTOFF(%reg1)], %reg2
2741 and convert
2742 call/jmp *foo@GOT[(%reg)]
daa67607 2743 to
02a86693
L		 2744 nop call foo/jmp foo nop
2745 When PIC is false, convert
2746 test %reg1, foo@GOT[(%reg2)]
2747 to
2748 test $foo, %reg1
2749 and convert
2750 binop foo@GOT[(%reg1)], %reg2
2751 to
2752 binop $foo, %reg2
2753 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
2754 instructions. */
daa67607
L		 2755
2756static bfd_boolean
02a86693 2757elf_i386_convert_load (bfd *abfd, asection *sec,
a6af384b 2758 struct bfd_link_info *link_info)
daa67607
L		 2759{
2760 Elf_Internal_Shdr *symtab_hdr;
2761 Elf_Internal_Rela *internal_relocs;
2762 Elf_Internal_Rela *irel, *irelend;
2763 bfd_byte *contents;
2764 struct elf_i386_link_hash_table *htab;
2765 bfd_boolean changed_contents;
2766 bfd_boolean changed_relocs;
2767 bfd_signed_vma *local_got_refcounts;
2768
2769 /* Don't even try to convert non-ELF outputs. */
2770 if (!is_elf_hash_table (link_info->hash))
2771 return FALSE;
2772
c1d11331 2773 /* Nothing to do if there is no need or no output. */
daa67607 2774 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
02a86693 2775 || sec->need_convert_load == 0
c8831961 2776 || bfd_is_abs_section (sec->output_section))
daa67607
L		 2777 return TRUE;
2778
2779 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2780
2781 /* Load the relocations for this section. */
2782 internal_relocs = (_bfd_elf_link_read_relocs
2783 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2784 link_info->keep_memory));
2785 if (internal_relocs == NULL)
2786 return FALSE;
2787
2788 htab = elf_i386_hash_table (link_info);
2789 changed_contents = FALSE;
2790 changed_relocs = FALSE;
2791 local_got_refcounts = elf_local_got_refcounts (abfd);
2792
2793 /* Get the section contents. */
2794 if (elf_section_data (sec)->this_hdr.contents != NULL)
2795 contents = elf_section_data (sec)->this_hdr.contents;
2796 else
2797 {
2798 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2799 goto error_return;
2800 }
2801
2802 irelend = internal_relocs + sec->reloc_count;
2803 for (irel = internal_relocs; irel < irelend; irel++)
2804 {
2805 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2806 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2807 unsigned int indx;
2808 struct elf_link_hash_entry *h;
02a86693
L		 2809 unsigned int opcode;
2810 unsigned int modrm;
2811 bfd_vma roff;
2812 bfd_boolean baseless;
2813 Elf_Internal_Sym *isym;
2814 unsigned int addend;
2815 unsigned int nop;
2816 bfd_vma nop_offset;
daa67607 2817
02a86693 2818 if (r_type != R_386_GOT32 && r_type != R_386_GOT32X)
daa67607
L		 2819 continue;
2820
02a86693
L		 2821 roff = irel->r_offset;
2822 if (roff < 2)
2823 continue;
2824
02e2aef8
L		 2825 /* Addend for R_386_GOT32 and R_386_GOT32X relocations must be 0. */
2826 addend = bfd_get_32 (abfd, contents + roff);
2827 if (addend != 0)
2828 continue;
2829
02a86693
L		 2830 modrm = bfd_get_8 (abfd, contents + roff - 1);
2831 baseless = (modrm & 0xc7) == 0x5;
2832
2833 if (r_type == R_386_GOT32X
2834 && baseless
2835 && bfd_link_pic (link_info))
daa67607 2836 {
02a86693
L		 2837 /* For PIC, disallow R_386_GOT32X without a base register
2838 since we don't know what the GOT base is. Allow
2839 R_386_GOT32 for existing object files. */
2840 const char *name;
2841
2842 if (r_symndx < symtab_hdr->sh_info)
2843 {
2844 isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd,
2845 r_symndx);
2846 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
2847 }
2848 else
2849 {
2850 indx = r_symndx - symtab_hdr->sh_info;
2851 h = elf_sym_hashes (abfd)[indx];
2852 BFD_ASSERT (h != NULL);
2853 name = h->root.root.string;
2854 }
2855
2856 (*_bfd_error_handler)
2857 (_("%B: direct GOT relocation R_386_GOT32X against `%s' without base register can not be used when making a shared object"),
2858 abfd, name);
2859 goto error_return;
2860 }
daa67607 2861
02a86693
L		 2862 opcode = bfd_get_8 (abfd, contents + roff - 2);
2863
2864 /* It is OK to convert mov to lea. */
2865 if (opcode != 0x8b)
2866 {
2867 /* Only convert R_386_GOT32X relocation for call, jmp or
2868 one of adc, add, and, cmp, or, sbb, sub, test, xor
2869 instructions. */
2870 if (r_type != R_386_GOT32X)
2871 continue;
2872
2873 /* It is OK to convert indirect branch to direct branch. It
2874 is OK to convert adc, add, and, cmp, or, sbb, sub, test,
2875 xor only when PIC is false. */
2876 if (opcode != 0xff && bfd_link_pic (link_info))
2877 continue;
2878 }
2879
2880 /* Try to convert R_386_GOT32 and R_386_GOT32X. Get the symbol
2881 referred to by the reloc. */
2882 if (r_symndx < symtab_hdr->sh_info)
2883 {
daa67607
L		 2884 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2885 abfd, r_symndx);
2886
02a86693
L		 2887 /* STT_GNU_IFUNC must keep GOT32 relocations. */
2888 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
2889 continue;
2890
2891 h = NULL;
2892 if (opcode == 0x0ff)
2893 /* Convert "call/jmp *foo@GOT[(%reg)]". */
2894 goto convert_branch;
2895 else
2896 /* Convert "mov foo@GOT[(%reg1)], %reg2",
2897 "test %reg1, foo@GOT(%reg2)" and
2898 "binop foo@GOT[(%reg1)], %reg2". */
2899 goto convert_load;
daa67607
L		 2900 }
2901
2902 indx = r_symndx - symtab_hdr->sh_info;
2903 h = elf_sym_hashes (abfd)[indx];
2904 BFD_ASSERT (h != NULL);
2905
2906 while (h->root.type == bfd_link_hash_indirect
2907 || h->root.type == bfd_link_hash_warning)
2908 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2909
02a86693
L		 2910 /* STT_GNU_IFUNC must keep GOT32 relocations. */
2911 if (h->type == STT_GNU_IFUNC)
2912 continue;
2913
2914 if (opcode == 0xff)
2915 {
2916 /* We have "call/jmp *foo@GOT[(%reg)]". */
2917 if ((h->root.type == bfd_link_hash_defined
2918 || h->root.type == bfd_link_hash_defweak)
2919 && SYMBOL_REFERENCES_LOCAL (link_info, h))
2920 {
2921 /* The function is locally defined. */
2922convert_branch:
02a86693
L		 2923 /* Convert R_386_GOT32X to R_386_PC32. */
2924 if (modrm == 0x15 || (modrm & 0xf8) == 0x90)
2925 {
2926 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
2927 is a nop prefix. */
2928 modrm = 0xe8;
caa65211
L		 2929 nop = link_info->call_nop_byte;
2930 if (link_info->call_nop_as_suffix)
2931 {
2932 nop_offset = roff + 3;
2933 irel->r_offset -= 1;
2934 }
2935 else
2936 nop_offset = roff - 2;
02a86693
L		 2937 }
2938 else
2939 {
2940 /* Convert to "jmp foo nop". */
2941 modrm = 0xe9;
2942 nop = NOP_OPCODE;
2943 nop_offset = roff + 3;
2944 irel->r_offset -= 1;
2945 }
2946
2947 bfd_put_8 (abfd, nop, contents + nop_offset);
2948 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
2949 /* When converting to PC-relative relocation, we
2950 need to adjust addend by -4. */
2951 bfd_put_32 (abfd, -4, contents + irel->r_offset);
2952 irel->r_info = ELF32_R_INFO (r_symndx, R_386_PC32);
2953
2954 if (h)
2955 {
2956 if (h->got.refcount > 0)
2957 h->got.refcount -= 1;
2958 }
2959 else
2960 {
2961 if (local_got_refcounts != NULL
2962 && local_got_refcounts[r_symndx] > 0)
2963 local_got_refcounts[r_symndx] -= 1;
2964 }
2965
2966 changed_contents = TRUE;
2967 changed_relocs = TRUE;
2968 }
2969 }
2970 else
daa67607 2971 {
02a86693
L		 2972 /* We have "mov foo@GOT[(%re1g)], %reg2",
2973 "test %reg1, foo@GOT(%reg2)" and
2974 "binop foo@GOT[(%reg1)], %reg2".
2975
2976 Avoid optimizing _DYNAMIC since ld.so may use its
2977 link-time address. */
2978 if (h == htab->elf.hdynamic)
2979 continue;
2980
ead3d542
L		 2981 /* def_regular is set by an assignment in a linker script in
2982 bfd_elf_record_link_assignment. */
2983 if ((h->def_regular
2984 || h->root.type == bfd_link_hash_defined
2985 || h->root.type == bfd_link_hash_defweak)
02a86693
L		 2986 && SYMBOL_REFERENCES_LOCAL (link_info, h))
2987 {
2988convert_load:
2989 if (opcode == 0x8b)
2990 {
2991 /* Convert "mov foo@GOT(%reg1), %reg2" to
2992 "lea foo@GOTOFF(%reg1), %reg2". */
2993 if (r_type == R_386_GOT32X
2994 && (baseless || !bfd_link_pic (link_info)))
2995 {
2996 r_type = R_386_32;
2997 /* For R_386_32, convert
2998 "lea foo@GOTOFF(%reg1), %reg2" to
2999 "lea foo@GOT, %reg2". */
3000 if (!baseless)
3001 {
3002 modrm = 0x5 | (modrm & 0x38);
3003 bfd_put_8 (abfd, modrm, contents + roff - 1);
3004 }
3005 }
3006 else
3007 r_type = R_386_GOTOFF;
3008 opcode = 0x8d;
3009 }
3010 else
3011 {
02a86693
L		 3012 if (opcode == 0x85)
3013 {
3014 /* Convert "test %reg1, foo@GOT(%reg2)" to
3015 "test $foo, %reg1". */
3016 modrm = 0xc0 | (modrm & 0x38) >> 3;
3017 opcode = 0xf7;
3018 }
3019 else
3020 {
3021 /* Convert "binop foo@GOT(%reg1), %reg2" to
3022 "binop $foo, %reg2". */
3023 modrm = (0xc0
3024 | (modrm & 0x38) >> 3
3025 | (opcode & 0x3c));
3026 opcode = 0x81;
3027 }
3028 bfd_put_8 (abfd, modrm, contents + roff - 1);
3029 r_type = R_386_32;
3030 }
3031
3032 bfd_put_8 (abfd, opcode, contents + roff - 2);
3033 irel->r_info = ELF32_R_INFO (r_symndx, r_type);
3034
3035 if (h)
3036 {
3037 if (h->got.refcount > 0)
3038 h->got.refcount -= 1;
3039 }
3040 else
3041 {
3042 if (local_got_refcounts != NULL
3043 && local_got_refcounts[r_symndx] > 0)
3044 local_got_refcounts[r_symndx] -= 1;
3045 }
3046
3047 changed_contents = TRUE;
3048 changed_relocs = TRUE;
3049 }
daa67607
L		 3050 }
3051 }
3052
3053 if (contents != NULL
3054 && elf_section_data (sec)->this_hdr.contents != contents)
3055 {
3056 if (!changed_contents && !link_info->keep_memory)
3057 free (contents);
3058 else
3059 {
3060 /* Cache the section contents for elf_link_input_bfd. */
3061 elf_section_data (sec)->this_hdr.contents = contents;
3062 }
3063 }
3064
3065 if (elf_section_data (sec)->relocs != internal_relocs)
3066 {
3067 if (!changed_relocs)
3068 free (internal_relocs);
3069 else
3070 elf_section_data (sec)->relocs = internal_relocs;
3071 }
3072
3073 return TRUE;
3074
3075 error_return:
3076 if (contents != NULL
3077 && elf_section_data (sec)->this_hdr.contents != contents)
3078 free (contents);
3079 if (internal_relocs != NULL
3080 && elf_section_data (sec)->relocs != internal_relocs)
3081 free (internal_relocs);
3082 return FALSE;
3083}
3084
252b5132
RH		 3085/* Set the sizes of the dynamic sections. */
3086
b34976b6 3087static bfd_boolean
23209a78 3088elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 3089{
6725bdbf 3090 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3091 bfd *dynobj;
3092 asection *s;
b34976b6 3093 bfd_boolean relocs;
0c715baa 3094 bfd *ibfd;
252b5132 3095
6725bdbf 3096 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3097 if (htab == NULL)
3098 return FALSE;
ebe50bae 3099 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 3100 if (dynobj == NULL)
3101 abort ();
252b5132 3102
ebe50bae 3103 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3104 {
3105 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 3106 if (bfd_link_executable (info) && !info->nointerp)
252b5132 3107 {
3d4d4302 3108 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM		 3109 if (s == NULL)
3110 abort ();
eea6121a 3111 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 3112 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3113 }
161d71a6 3114 }
6725bdbf 3115
0c715baa
AM		 3116 /* Set up .got offsets for local syms, and space for local dynamic
3117 relocs. */
c72f2fb2 3118 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
161d71a6
L		 3119 {
3120 bfd_signed_vma *local_got;
3121 bfd_signed_vma *end_local_got;
13ae64f3 3122 char *local_tls_type;
67a4f2b7 3123 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 3124 bfd_size_type locsymcount;
3125 Elf_Internal_Shdr *symtab_hdr;
3126 asection *srel;
6725bdbf 3127
0ffa91dd 3128 if (! is_i386_elf (ibfd))
161d71a6 3129 continue;
6725bdbf 3130
0c715baa
AM		 3131 for (s = ibfd->sections; s != NULL; s = s->next)
3132 {
e03a8ed8 3133 struct elf_dyn_relocs *p;
0c715baa 3134
02a86693 3135 if (!elf_i386_convert_load (ibfd, s, info))
daa67607
L		 3136 return FALSE;
3137
e03a8ed8 3138 for (p = ((struct elf_dyn_relocs *)
e81d3500 3139 elf_section_data (s)->local_dynrel);
ec338859
AM		 3140 p != NULL;
3141 p = p->next)
0c715baa 3142 {
ec338859
AM		 3143 if (!bfd_is_abs_section (p->sec)
3144 && bfd_is_abs_section (p->sec->output_section))
3145 {
3146 /* Input section has been discarded, either because
3147 it is a copy of a linkonce section or due to
3148 linker script /DISCARD/, so we'll be discarding
3149 the relocs too. */
3150 }
23209a78 3151 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS		 3152 && strcmp (p->sec->output_section->name,
3153 ".tls_vars") == 0)
3154 {
3155 /* Relocations in vxworks .tls_vars sections are
3156 handled specially by the loader. */
3157 }
248866a8 3158 else if (p->count != 0)
ec338859
AM		 3159 {
3160 srel = elf_section_data (p->sec)->sreloc;
eea6121a 3161 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L		 3162 if ((p->sec->output_section->flags & SEC_READONLY) != 0
3163 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 3164 {
3165 info->flags |= DF_TEXTREL;
0e1862bb 3166 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd
L		 3167 || info->error_textrel)
3168 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 3169 p->sec->owner, p->sec);
b70321a2 3170 }
ec338859 3171 }
0c715baa
AM		 3172 }
3173 }
3174
3175 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 3176 if (!local_got)
3177 continue;
6725bdbf 3178
0ffa91dd 3179 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L		 3180 locsymcount = symtab_hdr->sh_info;
3181 end_local_got = local_got + locsymcount;
13ae64f3 3182 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 3183 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 3184 s = htab->elf.sgot;
3185 srel = htab->elf.srelgot;
67a4f2b7
AO		 3186 for (; local_got < end_local_got;
3187 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 3188 {
67a4f2b7 3189 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 3190 if (*local_got > 0)
6725bdbf 3191 {
67a4f2b7
AO		 3192 if (GOT_TLS_GDESC_P (*local_tls_type))
3193 {
6de2ae4a 3194 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 3195 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 3196 htab->elf.sgotplt->size += 8;
67a4f2b7
AO		 3197 *local_got = (bfd_vma) -2;
3198 }
3199 if (! GOT_TLS_GDESC_P (*local_tls_type)
3200 || GOT_TLS_GD_P (*local_tls_type))
3201 {
3202 *local_got = s->size;
3203 s->size += 4;
3204 if (GOT_TLS_GD_P (*local_tls_type)
3205 || *local_tls_type == GOT_TLS_IE_BOTH)
3206 s->size += 4;
3207 }
0e1862bb 3208 if (bfd_link_pic (info)
67a4f2b7 3209 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 3210 || (*local_tls_type & GOT_TLS_IE))
3211 {
3212 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 3213 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 3214 else if (GOT_TLS_GD_P (*local_tls_type)
3215 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 3216 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 3217 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 3218 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 3219 }
6725bdbf 3220 }
161d71a6
L		 3221 else
3222 *local_got = (bfd_vma) -1;
6725bdbf 3223 }
252b5132 3224 }
6725bdbf 3225
13ae64f3
JJ		 3226 if (htab->tls_ldm_got.refcount > 0)
3227 {
3228 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
3229 relocs. */
6de2ae4a
L		 3230 htab->tls_ldm_got.offset = htab->elf.sgot->size;
3231 htab->elf.sgot->size += 8;
3232 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 3233 }
3234 else
3235 htab->tls_ldm_got.offset = -1;
3236
0c715baa
AM		 3237 /* Allocate global sym .plt and .got entries, and space for global
3238 sym dynamic relocs. */
eb4ff4d6 3239 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 3240
c25bc9fc
L		 3241 /* Allocate .plt and .got entries, and space for local symbols. */
3242 htab_traverse (htab->loc_hash_table,
3243 elf_i386_allocate_local_dynrelocs,
3244 info);
3245
67a4f2b7
AO		 3246 /* For every jump slot reserved in the sgotplt, reloc_count is
3247 incremented. However, when we reserve space for TLS descriptors,
3248 it's not incremented, so in order to compute the space reserved
3249 for them, it suffices to multiply the reloc count by the jump
e1f98742 3250 slot size.
caa0075c 3251
e1f98742
L		 3252 PR ld/13302: We start next_irelative_index at the end of .rela.plt
3253 so that R_386_IRELATIVE entries come last. */
6de2ae4a 3254 if (htab->elf.srelplt)
e1f98742
L		 3255 {
3256 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
3257 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
3258 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
3259 }
3260 else if (htab->elf.irelplt)
3261 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
3262
67a4f2b7 3263
a7b16ceb
L		 3264 if (htab->elf.sgotplt)
3265 {
3266 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 3267 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 3268 if ((htab->elf.hgot == NULL
3269 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 3270 && (htab->elf.sgotplt->size
3271 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 3272 && (htab->elf.splt == NULL
3273 || htab->elf.splt->size == 0)
3274 && (htab->elf.sgot == NULL
3275 || htab->elf.sgot->size == 0)
3276 && (htab->elf.iplt == NULL
3277 || htab->elf.iplt->size == 0)
3278 && (htab->elf.igotplt == NULL
3279 || htab->elf.igotplt->size == 0))
3280 htab->elf.sgotplt->size = 0;
3281 }
3282
9a2a56cc
AM		 3283
3284 if (htab->plt_eh_frame != NULL
3285 && htab->elf.splt != NULL
3286 && htab->elf.splt->size != 0
3287 && !bfd_is_abs_section (htab->elf.splt->output_section)
3288 && _bfd_elf_eh_frame_present (info))
3289 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
3290
5a15f56f
AM		 3291 /* We now have determined the sizes of the various dynamic sections.
3292 Allocate memory for them. */
b34976b6 3293 relocs = FALSE;
252b5132
RH		 3294 for (s = dynobj->sections; s != NULL; s = s->next)
3295 {
eac338cf
PB		 3296 bfd_boolean strip_section = TRUE;
3297
252b5132
RH		 3298 if ((s->flags & SEC_LINKER_CREATED) == 0)
3299 continue;
3300
6de2ae4a 3301 if (s == htab->elf.splt
9a2a56cc 3302 || s == htab->elf.sgot)
252b5132 3303 {
6725bdbf
AM		 3304 /* Strip this section if we don't need it; see the
3305 comment below. */
eac338cf
PB		 3306 /* We'd like to strip these sections if they aren't needed, but if
3307 we've exported dynamic symbols from them we must leave them.
3308 It's too late to tell BFD to get rid of the symbols. */
3309
7325306f 3310 if (htab->elf.hplt != NULL)
eac338cf 3311 strip_section = FALSE;
252b5132 3312 }
9a2a56cc
AM		 3313 else if (s == htab->elf.sgotplt
3314 || s == htab->elf.iplt
3315 || s == htab->elf.igotplt
dd7e64d4 3316 || s == htab->plt_got
9a2a56cc
AM		 3317 || s == htab->plt_eh_frame
3318 || s == htab->sdynbss)
3319 {
3320 /* Strip these too. */
3321 }
0112cd26 3322 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 3323 {
6de2ae4a
L		 3324 if (s->size != 0
3325 && s != htab->elf.srelplt
3326 && s != htab->srelplt2)
b34976b6 3327 relocs = TRUE;
252b5132 3328
0ac8d2ca
AM		 3329 /* We use the reloc_count field as a counter if we need
3330 to copy relocs into the output file. */
5ae0bfb6 3331 s->reloc_count = 0;
252b5132 3332 }
6725bdbf 3333 else
252b5132
RH		 3334 {
3335 /* It's not one of our sections, so don't allocate space. */
3336 continue;
3337 }
3338
c456f082 3339 if (s->size == 0)
252b5132 3340 {
0ac8d2ca
AM		 3341 /* If we don't need this section, strip it from the
3342 output file. This is mostly to handle .rel.bss and
3343 .rel.plt. We must create both sections in
3344 create_dynamic_sections, because they must be created
3345 before the linker maps input sections to output
3346 sections. The linker does that before
3347 adjust_dynamic_symbol is called, and it is that
3348 function which decides whether anything needs to go
3349 into these sections. */
c456f082
AM		 3350 if (strip_section)
3351 s->flags |= SEC_EXCLUDE;
252b5132
RH		 3352 continue;
3353 }
3354
c456f082
AM		 3355 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3356 continue;
3357
f69da49f
AM		 3358 /* Allocate memory for the section contents. We use bfd_zalloc
3359 here in case unused entries are not reclaimed before the
3360 section's contents are written out. This should not happen,
3361 but this way if it does, we get a R_386_NONE reloc instead
3362 of garbage. */
a50b1753 3363 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 3364 if (s->contents == NULL)
b34976b6 3365 return FALSE;
252b5132
RH		 3366 }
3367
e41b3a13 3368 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3369 && htab->plt_eh_frame->contents != NULL)
3370 {
3371 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
3372 sizeof (elf_i386_eh_frame_plt));
3373 bfd_put_32 (dynobj, htab->elf.splt->size,
3374 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3375 }
e41b3a13 3376
ebe50bae 3377 if (htab->elf.dynamic_sections_created)
252b5132
RH		 3378 {
3379 /* Add some entries to the .dynamic section. We fill in the
3380 values later, in elf_i386_finish_dynamic_sections, but we
3381 must add the entries now so that we get the correct size for
3382 the .dynamic section. The DT_DEBUG entry is filled in by the
3383 dynamic linker and used by the debugger. */
dc810e39 3384#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3385 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3386
0e1862bb 3387 if (bfd_link_executable (info))
252b5132 3388 {
dc810e39 3389 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3390 return FALSE;
252b5132
RH		 3391 }
3392
6de2ae4a 3393 if (htab->elf.splt->size != 0)
252b5132 3394 {
7c1e8d3e
L		 3395 /* DT_PLTGOT is used by prelink even if there is no PLT
3396 relocation. */
3397 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 3398 return FALSE;
7c1e8d3e
L		 3399
3400 if (htab->elf.srelplt->size != 0)
3401 {
3402 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3403 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3404 || !add_dynamic_entry (DT_JMPREL, 0))
3405 return FALSE;
3406 }
252b5132
RH		 3407 }
3408
3409 if (relocs)
3410 {
dc810e39
AM		 3411 if (!add_dynamic_entry (DT_REL, 0)
3412 || !add_dynamic_entry (DT_RELSZ, 0)
3413 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 3414 return FALSE;
252b5132 3415
0c715baa
AM		 3416 /* If any dynamic relocs apply to a read-only section,
3417 then we need a DT_TEXTREL entry. */
248866a8 3418 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L		 3419 elf_link_hash_traverse (&htab->elf,
3420 elf_i386_readonly_dynrelocs, info);
0c715baa
AM		 3421
3422 if ((info->flags & DF_TEXTREL) != 0)
3423 {
8efa2874
L		 3424 if ((elf_tdata (output_bfd)->has_gnu_symbols
3425 & elf_gnu_symbol_ifunc) == elf_gnu_symbol_ifunc)
3426 {
3427 info->callbacks->einfo
3428 (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
3429 bfd_set_error (bfd_error_bad_value);
3430 return FALSE;
3431 }
3432
0c715baa 3433 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3434 return FALSE;
0c715baa 3435 }
252b5132 3436 }
23209a78 3437 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS		 3438 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
3439 return FALSE;
252b5132 3440 }
dc810e39 3441#undef add_dynamic_entry
252b5132 3442
b34976b6 3443 return TRUE;
252b5132
RH		 3444}
3445
67a4f2b7
AO		 3446static bfd_boolean
3447elf_i386_always_size_sections (bfd *output_bfd,
3448 struct bfd_link_info *info)
3449{
3450 asection *tls_sec = elf_hash_table (info)->tls_sec;
3451
3452 if (tls_sec)
3453 {
3454 struct elf_link_hash_entry *tlsbase;
3455
3456 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3457 "_TLS_MODULE_BASE_",
3458 FALSE, FALSE, FALSE);
3459
3460 if (tlsbase && tlsbase->type == STT_TLS)
3461 {
4dfe6ac6 3462 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO		 3463 struct bfd_link_hash_entry *bh = NULL;
3464 const struct elf_backend_data *bed
3465 = get_elf_backend_data (output_bfd);
3466
4dfe6ac6
NC		 3467 htab = elf_i386_hash_table (info);
3468 if (htab == NULL)
3469 return FALSE;
3470
67a4f2b7
AO		 3471 if (!(_bfd_generic_link_add_one_symbol
3472 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3473 tls_sec, 0, NULL, FALSE,
3474 bed->collect, &bh)))
3475 return FALSE;
9f03412a 3476
4dfe6ac6 3477 htab->tls_module_base = bh;
9f03412a 3478
67a4f2b7
AO		 3479 tlsbase = (struct elf_link_hash_entry *)bh;
3480 tlsbase->def_regular = 1;
3481 tlsbase->other = STV_HIDDEN;
576fa883 3482 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3483 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3484 }
3485 }
3486
3487 return TRUE;
3488}
3489
38701953
AM		 3490/* Set the correct type for an x86 ELF section. We do this by the
3491 section name, which is a hack, but ought to work. */
3492
b34976b6 3493static bfd_boolean
55fd94b0
AM		 3494elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3495 Elf_Internal_Shdr *hdr,
3496 asection *sec)
38701953 3497{
91d6fa6a 3498 const char *name;
38701953
AM		 3499
3500 name = bfd_get_section_name (abfd, sec);
3501
3502 /* This is an ugly, but unfortunately necessary hack that is
3503 needed when producing EFI binaries on x86. It tells
3504 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3505 containing ELF relocation info. We need this hack in order to
3506 be able to generate ELF binaries that can be translated into
3507 EFI applications (which are essentially COFF objects). Those
3508 files contain a COFF ".reloc" section inside an ELFNN object,
3509 which would normally cause BFD to segfault because it would
3510 attempt to interpret this section as containing relocation
3511 entries for section "oc". With this hack enabled, ".reloc"
3512 will be treated as a normal data section, which will avoid the
3513 segfault. However, you won't be able to create an ELFNN binary
3514 with a section named "oc" that needs relocations, but that's
3515 the kind of ugly side-effects you get when detecting section
3516 types based on their names... In practice, this limitation is
3517 unlikely to bite. */
3518 if (strcmp (name, ".reloc") == 0)
3519 hdr->sh_type = SHT_PROGBITS;
3520
b34976b6 3521 return TRUE;
38701953
AM		 3522}
3523
9f03412a
AO		 3524/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3525 executables. Rather than setting it to the beginning of the TLS
3526 section, we have to set it to the end. This function may be called
3527 multiple times, it is idempotent. */
3528
3529static void
eb4ff4d6 3530elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3531{
4dfe6ac6 3532 struct elf_i386_link_hash_table *htab;
9f03412a
AO		 3533 struct bfd_link_hash_entry *base;
3534
0e1862bb 3535 if (!bfd_link_executable (info))
9f03412a
AO		 3536 return;
3537
4dfe6ac6
NC		 3538 htab = elf_i386_hash_table (info);
3539 if (htab == NULL)
3540 return;
9f03412a 3541
4dfe6ac6
NC		 3542 base = htab->tls_module_base;
3543 if (base == NULL)
9f03412a
AO		 3544 return;
3545
4dfe6ac6 3546 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 3547}
3548
13ae64f3
JJ		 3549/* Return the base VMA address which should be subtracted from real addresses
3550 when resolving @dtpoff relocation.
3551 This is PT_TLS segment p_vaddr. */
3552
3553static bfd_vma
eb4ff4d6 3554elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3555{
e1918d23
AM		 3556 /* If tls_sec is NULL, we should have signalled an error already. */
3557 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3558 return 0;
e1918d23 3559 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 3560}
3561
3562/* Return the relocation value for @tpoff relocation
3563 if STT_TLS virtual address is ADDRESS. */
3564
3565static bfd_vma
eb4ff4d6 3566elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3567{
e1918d23 3568 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 3569 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3570 bfd_vma static_tls_size;
13ae64f3 3571
e1918d23
AM		 3572 /* If tls_sec is NULL, we should have signalled an error already. */
3573 if (htab->tls_sec == NULL)
6a30718d 3574 return 0;
7dc98aea
RO		 3575
3576 /* Consider special static TLS alignment requirements. */
3577 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3578 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 3579}
3580
252b5132
RH		 3581/* Relocate an i386 ELF section. */
3582
b34976b6 3583static bfd_boolean
55fd94b0
AM		 3584elf_i386_relocate_section (bfd *output_bfd,
3585 struct bfd_link_info *info,
3586 bfd *input_bfd,
3587 asection *input_section,
3588 bfd_byte *contents,
3589 Elf_Internal_Rela *relocs,
3590 Elf_Internal_Sym *local_syms,
3591 asection **local_sections)
252b5132 3592{
6725bdbf 3593 struct elf_i386_link_hash_table *htab;
252b5132
RH		 3594 Elf_Internal_Shdr *symtab_hdr;
3595 struct elf_link_hash_entry **sym_hashes;
3596 bfd_vma *local_got_offsets;
67a4f2b7 3597 bfd_vma *local_tlsdesc_gotents;
252b5132 3598 Elf_Internal_Rela *rel;
60f2e42e 3599 Elf_Internal_Rela *wrel;
252b5132 3600 Elf_Internal_Rela *relend;
3348747a 3601 bfd_boolean is_vxworks_tls;
25e762b9 3602 unsigned plt_entry_size;
252b5132 3603
0ffa91dd 3604 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3605
6725bdbf 3606 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 3607 if (htab == NULL)
3608 return FALSE;
0ffa91dd 3609 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH		 3610 sym_hashes = elf_sym_hashes (input_bfd);
3611 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3612 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS		 3613 /* We have to handle relocations in vxworks .tls_vars sections
3614 specially, because the dynamic loader is 'weird'. */
23209a78 3615 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
0e1862bb 3616 && bfd_link_pic (info)
3348747a
NS		 3617 && !strcmp (input_section->output_section->name,
3618 ".tls_vars"));
252b5132 3619
eb4ff4d6 3620 elf_i386_set_tls_module_base (info);
9f03412a 3621
25e762b9
RM		 3622 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3623
60f2e42e 3624 rel = wrel = relocs;
252b5132 3625 relend = relocs + input_section->reloc_count;
60f2e42e 3626 for (; rel < relend; wrel++, rel++)
252b5132 3627 {
13ae64f3 3628 unsigned int r_type;
252b5132
RH		 3629 reloc_howto_type *howto;
3630 unsigned long r_symndx;
3631 struct elf_link_hash_entry *h;
dd7e64d4 3632 struct elf_i386_link_hash_entry *eh;
252b5132
RH		 3633 Elf_Internal_Sym *sym;
3634 asection *sec;
dd7e64d4 3635 bfd_vma off, offplt, plt_offset;
252b5132 3636 bfd_vma relocation;
b34976b6 3637 bfd_boolean unresolved_reloc;
252b5132 3638 bfd_reloc_status_type r;
1b452ec6 3639 unsigned int indx;
13ae64f3 3640 int tls_type;
1788fc08 3641 bfd_vma st_size;
dd7e64d4 3642 asection *resolved_plt;
252b5132
RH		 3643
3644 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 3645 if (r_type == R_386_GNU_VTINHERIT
3646 || r_type == R_386_GNU_VTENTRY)
18954b29
L		 3647 {
3648 if (wrel != rel)
3649 *wrel = *rel;
3650 continue;
3651 }
dc47f327 3652
55fd94b0 3653 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 3654 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3655 >= R_386_ext - R_386_standard)
3656 && ((indx = r_type - R_386_tls_offset) - R_386_ext
c74be520 3657 >= R_386_ext2 - R_386_ext))
252b5132 3658 {
6ba842b6 3659 (*_bfd_error_handler)
d003868e
AM		 3660 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3661 input_bfd, input_section, r_type);
252b5132 3662 bfd_set_error (bfd_error_bad_value);
b34976b6 3663 return FALSE;
252b5132 3664 }
1b452ec6 3665 howto = elf_howto_table + indx;
252b5132
RH		 3666
3667 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 3668 h = NULL;
3669 sym = NULL;
3670 sec = NULL;
b34976b6 3671 unresolved_reloc = FALSE;
252b5132
RH		 3672 if (r_symndx < symtab_hdr->sh_info)
3673 {
3674 sym = local_syms + r_symndx;
3675 sec = local_sections[r_symndx];
3676 relocation = (sec->output_section->vma
3677 + sec->output_offset
3678 + sym->st_value);
1788fc08 3679 st_size = sym->st_size;
ab96bf03
AM		 3680
3681 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3682 && ((sec->flags & SEC_MERGE) != 0
0e1862bb 3683 || (bfd_link_relocatable (info)
ab96bf03 3684 && sec->output_offset != 0)))
f8df10f4 3685 {
f8df10f4 3686 bfd_vma addend;
4a335f3d 3687 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3688
4a335f3d 3689 switch (howto->size)
f8df10f4 3690 {
4a335f3d
AM		 3691 case 0:
3692 addend = bfd_get_8 (input_bfd, where);
3693 if (howto->pc_relative)
3694 {
3695 addend = (addend ^ 0x80) - 0x80;
3696 addend += 1;
3697 }
3698 break;
3699 case 1:
3700 addend = bfd_get_16 (input_bfd, where);
3701 if (howto->pc_relative)
3702 {
3703 addend = (addend ^ 0x8000) - 0x8000;
3704 addend += 2;
3705 }
3706 break;
3707 case 2:
3708 addend = bfd_get_32 (input_bfd, where);
3709 if (howto->pc_relative)
3710 {
3711 addend = (addend ^ 0x80000000) - 0x80000000;
3712 addend += 4;
3713 }
3714 break;
3715 default:
3716 abort ();
f8df10f4
JJ		 3717 }
3718
0e1862bb 3719 if (bfd_link_relocatable (info))
ab96bf03
AM		 3720 addend += sec->output_offset;
3721 else
3722 {
3723 asection *msec = sec;
3724 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3725 addend);
3726 addend -= relocation;
3727 addend += msec->output_section->vma + msec->output_offset;
3728 }
4a335f3d
AM		 3729
3730 switch (howto->size)
3731 {
3732 case 0:
16a10388 3733 /* FIXME: overflow checks. */
4a335f3d
AM		 3734 if (howto->pc_relative)
3735 addend -= 1;
3736 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 3737 break;
3738 case 1:
3739 if (howto->pc_relative)
3740 addend -= 2;
3741 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 3742 break;
3743 case 2:
3744 if (howto->pc_relative)
3745 addend -= 4;
3746 bfd_put_32 (input_bfd, addend, where);
3747 break;
3748 }
f8df10f4 3749 }
0e1862bb 3750 else if (!bfd_link_relocatable (info)
1f85278f 3751 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L		 3752 {
3753 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L		 3754 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3755 FALSE);
c25bc9fc
L		 3756 if (h == NULL)
3757 abort ();
3758
23209a78 3759 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 3760 h->root.u.def.value = sym->st_value;
3761 h->root.u.def.section = sec;
3762 }
252b5132
RH		 3763 }
3764 else
3765 {
3d540e93 3766 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3767 bfd_boolean ignored ATTRIBUTE_UNUSED;
ffb2e45b 3768
b2a8e766
AM		 3769 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3770 r_symndx, symtab_hdr, sym_hashes,
3771 h, sec, relocation,
62d887d4 3772 unresolved_reloc, warned, ignored);
1788fc08 3773 st_size = h->size;
252b5132
RH		 3774 }
3775
dbaa2011 3776 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 3777 {
3778 _bfd_clear_contents (howto, input_bfd, input_section,
3779 contents + rel->r_offset);
3780 wrel->r_offset = rel->r_offset;
3781 wrel->r_info = 0;
3782 wrel->r_addend = 0;
3783
3784 /* For ld -r, remove relocations in debug sections against
3785 sections defined in discarded sections. Not done for
3786 eh_frame editing code expects to be present. */
3787 if (bfd_link_relocatable (info)
3788 && (input_section->flags & SEC_DEBUGGING))
3789 wrel--;
3790
3791 continue;
3792 }
9635fe29 3793
0e1862bb 3794 if (bfd_link_relocatable (info))
2d5da473
L		 3795 {
3796 if (wrel != rel)
3797 *wrel = *rel;
3798 continue;
3799 }
ab96bf03 3800
cbe950e9
L		 3801 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3802 it here if it is defined in a non-shared object. */
3803 if (h != NULL
3804 && h->type == STT_GNU_IFUNC
3805 && h->def_regular)
3806 {
3807 asection *plt, *gotplt, *base_got;
3808 bfd_vma plt_index;
4c544807 3809 const char *name;
cbe950e9 3810
97dc35c8
L		 3811 if ((input_section->flags & SEC_ALLOC) == 0)
3812 {
3813 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3814 sections because such sections are not SEC_ALLOC and
3815 thus ld.so will not process them. */
3816 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 3817 continue;
97dc35c8
L		 3818 abort ();
3819 }
3820 else if (h->plt.offset == (bfd_vma) -1)
cbe950e9
L		 3821 abort ();
3822
3823 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3824 if (htab->elf.splt != NULL)
cbe950e9 3825 {
6de2ae4a
L		 3826 plt = htab->elf.splt;
3827 gotplt = htab->elf.sgotplt;
cbe950e9
L		 3828 }
3829 else
3830 {
6de2ae4a
L		 3831 plt = htab->elf.iplt;
3832 gotplt = htab->elf.igotplt;
cbe950e9
L		 3833 }
3834
3835 relocation = (plt->output_section->vma
3836 + plt->output_offset + h->plt.offset);
3837
3838 switch (r_type)
3839 {
3840 default:
4c544807
L		 3841 if (h->root.root.string)
3842 name = h->root.root.string;
3843 else
3844 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3845 NULL);
cbe950e9
L		 3846 (*_bfd_error_handler)
3847 (_("%B: relocation %s against STT_GNU_IFUNC "
3848 "symbol `%s' isn't handled by %s"), input_bfd,
3849 elf_howto_table[r_type].name,
4c544807 3850 name, __FUNCTION__);
cbe950e9
L		 3851 bfd_set_error (bfd_error_bad_value);
3852 return FALSE;
3853
3854 case R_386_32:
710ab287 3855 /* Generate dynamic relcoation only when there is a
c293fa49 3856 non-GOT reference in a shared object. */
0e1862bb 3857 if (bfd_link_pic (info) && h->non_got_ref)
710ab287
L		 3858 {
3859 Elf_Internal_Rela outrel;
710ab287
L		 3860 asection *sreloc;
3861 bfd_vma offset;
3862
c25bc9fc
L		 3863 /* Need a dynamic relocation to get the real function
3864 adddress. */
710ab287
L		 3865 offset = _bfd_elf_section_offset (output_bfd,
3866 info,
3867 input_section,
3868 rel->r_offset);
3869 if (offset == (bfd_vma) -1
3870 || offset == (bfd_vma) -2)
3871 abort ();
3872
3873 outrel.r_offset = (input_section->output_section->vma
3874 + input_section->output_offset
3875 + offset);
3876
3877 if (h->dynindx == -1
44c4ea11 3878 || h->forced_local
0e1862bb 3879 || bfd_link_executable (info))
710ab287
L		 3880 {
3881 /* This symbol is resolved locally. */
56b8aada
L		 3882 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3883 bfd_put_32 (output_bfd,
3884 (h->root.u.def.value
3885 + h->root.u.def.section->output_section->vma
3886 + h->root.u.def.section->output_offset),
3887 contents + offset);
710ab287
L		 3888 }
3889 else
56b8aada 3890 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3891
6de2ae4a 3892 sreloc = htab->elf.irelifunc;
59d6ffb2 3893 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L		 3894
3895 /* If this reloc is against an external symbol, we
3896 do not want to fiddle with the addend. Otherwise,
3897 we need to include the symbol value so that it
3898 becomes an addend for the dynamic reloc. For an
3899 internal symbol, we have updated addend. */
56b8aada 3900 continue;
710ab287 3901 }
d59a60e9 3902 /* FALLTHROUGH */
cbe950e9
L		 3903 case R_386_PC32:
3904 case R_386_PLT32:
3905 goto do_relocation;
3906
3907 case R_386_GOT32:
02a86693 3908 case R_386_GOT32X:
6de2ae4a 3909 base_got = htab->elf.sgot;
cbe950e9
L		 3910 off = h->got.offset;
3911
7afd84dc 3912 if (base_got == NULL)
cbe950e9
L		 3913 abort ();
3914
7afd84dc 3915 if (off == (bfd_vma) -1)
cbe950e9 3916 {
7afd84dc
L		 3917 /* We can't use h->got.offset here to save state, or
3918 even just remember the offset, as finish_dynamic_symbol
3919 would use that as offset into .got. */
6bbec505 3920
6de2ae4a 3921 if (htab->elf.splt != NULL)
7afd84dc 3922 {
25e762b9 3923 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3924 off = (plt_index + 3) * 4;
6de2ae4a 3925 base_got = htab->elf.sgotplt;
7afd84dc 3926 }
cbe950e9
L		 3927 else
3928 {
25e762b9 3929 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3930 off = plt_index * 4;
6de2ae4a 3931 base_got = htab->elf.igotplt;
7afd84dc
L		 3932 }
3933
3934 if (h->dynindx == -1
3935 || h->forced_local
3936 || info->symbolic)
3937 {
3938 /* This references the local defitionion. We must
3939 initialize this entry in the global offset table.
3940 Since the offset must always be a multiple of 8,
3941 we use the least significant bit to record
3942 whether we have initialized it already.
3943
3944 When doing a dynamic link, we create a .rela.got
3945 relocation entry to initialize the value. This
3946 is done in the finish_dynamic_symbol routine. */
3947 if ((off & 1) != 0)
3948 off &= ~1;
3949 else
3950 {
3951 bfd_put_32 (output_bfd, relocation,
3952 base_got->contents + off);
3953 h->got.offset |= 1;
3954 }
cbe950e9 3955 }
cbe950e9 3956
7afd84dc 3957 relocation = off;
cbe950e9 3958
7afd84dc 3959 /* Adjust for static executables. */
6de2ae4a 3960 if (htab->elf.splt == NULL)
7afd84dc
L		 3961 relocation += gotplt->output_offset;
3962 }
3963 else
0018b0a3
L		 3964 {
3965 relocation = (base_got->output_section->vma
3966 + base_got->output_offset + off
3967 - gotplt->output_section->vma
3968 - gotplt->output_offset);
3969 /* Adjust for static executables. */
6de2ae4a 3970 if (htab->elf.splt == NULL)
0018b0a3
L		 3971 relocation += gotplt->output_offset;
3972 }
3973
cbe950e9
L		 3974 goto do_relocation;
3975
3976 case R_386_GOTOFF:
3977 relocation -= (gotplt->output_section->vma
3978 + gotplt->output_offset);
3979 goto do_relocation;
3980 }
3981 }
3982
04ebc307 3983 eh = (struct elf_i386_link_hash_entry *) h;
252b5132
RH		 3984 switch (r_type)
3985 {
02a86693
L		 3986 case R_386_GOT32X:
3987 /* Avoid optimizing _DYNAMIC since ld.so may use its
3988 link-time address. */
3989 if (h == htab->elf.hdynamic)
3990 goto r_386_got32;
3991
3992 if (bfd_link_pic (info))
3993 {
3994 /* It is OK to convert mov to lea and convert indirect
3995 branch to direct branch. It is OK to convert adc,
3996 add, and, cmp, or, sbb, sub, test, xor only when PIC
3997 is false. */
02e2aef8
L		 3998 unsigned int opcode, addend;
3999 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
4000 if (addend != 0)
4001 goto r_386_got32;
4002 opcode = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
02a86693
L		 4003 if (opcode != 0x8b && opcode != 0xff)
4004 goto r_386_got32;
4005 }
4006
4007 /* Resolve "mov GOT[(%reg)], %reg",
4008 "call/jmp *GOT[(%reg)]", "test %reg, foo@GOT[(%reg)]"
4009 and "binop foo@GOT[(%reg)], %reg". */
4010 if (h == NULL
4011 || (h->plt.offset == (bfd_vma) -1
4012 && h->got.offset == (bfd_vma) -1)
4013 || htab->elf.sgotplt == NULL)
4014 abort ();
4015
4016 offplt = (htab->elf.sgotplt->output_section->vma
4017 + htab->elf.sgotplt->output_offset);
4018
4019 /* It is relative to .got.plt section. */
4020 if (h->got.offset != (bfd_vma) -1)
32875eb1
L		 4021 /* Use GOT entry. Mask off the least significant bit in
4022 GOT offset which may be set by R_386_GOT32 processing
4023 below. */
02a86693
L		 4024 relocation = (htab->elf.sgot->output_section->vma
4025 + htab->elf.sgot->output_offset
32875eb1 4026 + (h->got.offset & ~1) - offplt);
02a86693
L		 4027 else
4028 /* Use GOTPLT entry. */
4029 relocation = (h->plt.offset / plt_entry_size - 1 + 3) * 4;
4030
4031 if (!bfd_link_pic (info))
4032 {
4033 /* If not PIC, add the .got.plt section address for
a3718e9e 4034 baseless addressing. */
02a86693 4035 unsigned int modrm;
02e2aef8 4036 modrm = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
02a86693
L		 4037 if ((modrm & 0xc7) == 0x5)
4038 relocation += offplt;
4039 }
4040
4041 unresolved_reloc = FALSE;
4042 break;
4043
252b5132 4044 case R_386_GOT32:
02a86693 4045r_386_got32:
252b5132
RH		 4046 /* Relocation is to the entry for this symbol in the global
4047 offset table. */
6de2ae4a 4048 if (htab->elf.sgot == NULL)
ffb2e45b 4049 abort ();
252b5132
RH		 4050
4051 if (h != NULL)
4052 {
b34976b6 4053 bfd_boolean dyn;
252b5132
RH		 4054
4055 off = h->got.offset;
ebe50bae 4056 dyn = htab->elf.dynamic_sections_created;
0e1862bb
L		 4057 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4058 bfd_link_pic (info),
4059 h)
4060 || (bfd_link_pic (info)
586119b3 4061 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 4062 || (ELF_ST_VISIBILITY (h->other)
4063 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 4064 {
4065 /* This is actually a static link, or it is a
4066 -Bsymbolic link and the symbol is defined
4067 locally, or the symbol was forced to be local
4068 because of a version file. We must initialize
4069 this entry in the global offset table. Since the
4070 offset must always be a multiple of 4, we use the
4071 least significant bit to record whether we have
4072 initialized it already.
4073
4074 When doing a dynamic link, we create a .rel.got
4075 relocation entry to initialize the value. This
4076 is done in the finish_dynamic_symbol routine. */
4077 if ((off & 1) != 0)
4078 off &= ~1;
4079 else
4080 {
4081 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4082 htab->elf.sgot->contents + off);
252b5132
RH		 4083 h->got.offset |= 1;
4084 }
4085 }
8c694914 4086 else
b34976b6 4087 unresolved_reloc = FALSE;
252b5132
RH		 4088 }
4089 else
4090 {
ffb2e45b
AM		 4091 if (local_got_offsets == NULL)
4092 abort ();
252b5132
RH		 4093
4094 off = local_got_offsets[r_symndx];
4095
4096 /* The offset must always be a multiple of 4. We use
83be169b
AM		 4097 the least significant bit to record whether we have
4098 already generated the necessary reloc. */
252b5132
RH		 4099 if ((off & 1) != 0)
4100 off &= ~1;
4101 else
4102 {
6725bdbf 4103 bfd_put_32 (output_bfd, relocation,
6de2ae4a 4104 htab->elf.sgot->contents + off);
252b5132 4105
0e1862bb 4106 if (bfd_link_pic (info))
252b5132 4107 {
947216bf
AM		 4108 asection *s;
4109 Elf_Internal_Rela outrel;
252b5132 4110
6de2ae4a 4111 s = htab->elf.srelgot;
947216bf 4112 if (s == NULL)
ffb2e45b 4113 abort ();
252b5132 4114
6de2ae4a
L		 4115 outrel.r_offset = (htab->elf.sgot->output_section->vma
4116 + htab->elf.sgot->output_offset
252b5132
RH		 4117 + off);
4118 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 4119 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH		 4120 }
4121
4122 local_got_offsets[r_symndx] |= 1;
4123 }
252b5132
RH		 4124 }
4125
ffb2e45b
AM		 4126 if (off >= (bfd_vma) -2)
4127 abort ();
4128
6de2ae4a
L		 4129 relocation = htab->elf.sgot->output_section->vma
4130 + htab->elf.sgot->output_offset + off
4131 - htab->elf.sgotplt->output_section->vma
4132 - htab->elf.sgotplt->output_offset;
252b5132
RH		 4133 break;
4134
4135 case R_386_GOTOFF:
4136 /* Relocation is relative to the start of the global offset
4137 table. */
4138
3d949995
L		 4139 /* Check to make sure it isn't a protected function or data
4140 symbol for shared library since it may not be local when
4141 used as function address or with copy relocation. We also
e3c0e327 4142 need to make sure that a symbol is referenced locally. */
0e1862bb 4143 if (!bfd_link_executable (info) && h)
90f487df 4144 {
41bed6dd
L		 4145 if (!h->def_regular)
4146 {
4147 const char *v;
4148
4149 switch (ELF_ST_VISIBILITY (h->other))
4150 {
4151 case STV_HIDDEN:
4152 v = _("hidden symbol");
4153 break;
4154 case STV_INTERNAL:
4155 v = _("internal symbol");
4156 break;
4157 case STV_PROTECTED:
4158 v = _("protected symbol");
4159 break;
4160 default:
4161 v = _("symbol");
4162 break;
4163 }
4164
4165 (*_bfd_error_handler)
4166 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
4167 input_bfd, v, h->root.root.string);
4168 bfd_set_error (bfd_error_bad_value);
4169 return FALSE;
4170 }
d5597ebc 4171 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
3d949995
L		 4172 && (h->type == STT_FUNC
4173 || h->type == STT_OBJECT)
41bed6dd
L		 4174 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
4175 {
4176 (*_bfd_error_handler)
3d949995
L		 4177 (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
4178 input_bfd,
4179 h->type == STT_FUNC ? "function" : "data",
4180 h->root.root.string);
41bed6dd
L		 4181 bfd_set_error (bfd_error_bad_value);
4182 return FALSE;
4183 }
90f487df
L		 4184 }
4185
8c37241b
JJ		 4186 /* Note that sgot is not involved in this
4187 calculation. We always want the start of .got.plt. If we
4188 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 4189 permitted by the ABI, we might have to change this
4190 calculation. */
6de2ae4a
L		 4191 relocation -= htab->elf.sgotplt->output_section->vma
4192 + htab->elf.sgotplt->output_offset;
252b5132
RH		 4193 break;
4194
4195 case R_386_GOTPC:
4196 /* Use global offset table as symbol value. */
6de2ae4a
L		 4197 relocation = htab->elf.sgotplt->output_section->vma
4198 + htab->elf.sgotplt->output_offset;
b34976b6 4199 unresolved_reloc = FALSE;
252b5132
RH		 4200 break;
4201
4202 case R_386_PLT32:
4203 /* Relocation is to the entry for this symbol in the
4204 procedure linkage table. */
4205
dd5724d5 4206 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 4207 without using the procedure linkage table. */
252b5132
RH		 4208 if (h == NULL)
4209 break;
4210
dd7e64d4
L		 4211 if ((h->plt.offset == (bfd_vma) -1
4212 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 4213 || htab->elf.splt == NULL)
252b5132
RH		 4214 {
4215 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 4216 happens when statically linking PIC code, or when
4217 using -Bsymbolic. */
252b5132
RH		 4218 break;
4219 }
4220
dd7e64d4
L		 4221 if (h->plt.offset != (bfd_vma) -1)
4222 {
4223 resolved_plt = htab->elf.splt;
4224 plt_offset = h->plt.offset;
4225 }
4226 else
4227 {
4228 resolved_plt = htab->plt_got;
4229 plt_offset = eh->plt_got.offset;
4230 }
4231
4232 relocation = (resolved_plt->output_section->vma
4233 + resolved_plt->output_offset
4234 + plt_offset);
b34976b6 4235 unresolved_reloc = FALSE;
252b5132
RH		 4236 break;
4237
1788fc08 4238 case R_386_SIZE32:
1788fc08
L		 4239 /* Set to symbol size. */
4240 relocation = st_size;
4241 /* Fall through. */
4242
252b5132
RH		 4243 case R_386_32:
4244 case R_386_PC32:
3348747a
NS		 4245 if ((input_section->flags & SEC_ALLOC) == 0
4246 || is_vxworks_tls)
ec338859
AM		 4247 break;
4248
04ebc307 4249 /* Copy dynamic function pointer relocations. */
0e1862bb 4250 if ((bfd_link_pic (info)
ef5aade5
L		 4251 && (h == NULL
4252 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4253 || h->root.type != bfd_link_hash_undefweak)
1788fc08 4254 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 4255 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845 4256 || (ELIMINATE_COPY_RELOCS
0e1862bb 4257 && !bfd_link_pic (info)
12d0ee4a
AM		 4258 && h != NULL
4259 && h->dynindx != -1
04ebc307 4260 && (!h->non_got_ref || eh->func_pointer_refcount > 0)
f5385ebf
AM		 4261 && ((h->def_dynamic
4262 && !h->def_regular)
28d0b90e 4263 || h->root.type == bfd_link_hash_undefweak
0f88be7a 4264 || h->root.type == bfd_link_hash_undefined)))
252b5132 4265 {
947216bf 4266 Elf_Internal_Rela outrel;
b34976b6 4267 bfd_boolean skip, relocate;
0c715baa 4268 asection *sreloc;
252b5132
RH		 4269
4270 /* When generating a shared object, these relocations
4271 are copied into the output file to be resolved at run
4272 time. */
4273
b34976b6
AM		 4274 skip = FALSE;
4275 relocate = FALSE;
252b5132 4276
c629eae0
JJ		 4277 outrel.r_offset =
4278 _bfd_elf_section_offset (output_bfd, info, input_section,
4279 rel->r_offset);
4280 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4281 skip = TRUE;
0bb2d96a 4282 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4283 skip = TRUE, relocate = TRUE;
252b5132
RH		 4284 outrel.r_offset += (input_section->output_section->vma
4285 + input_section->output_offset);
4286
4287 if (skip)
0bb2d96a 4288 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 4289 else if (h != NULL
4290 && h->dynindx != -1
4291 && (r_type == R_386_PC32
0e1862bb 4292 || !bfd_link_pic (info)
55255dae 4293 || !SYMBOLIC_BIND (info, h)
f5385ebf 4294 || !h->def_regular))
0bb2d96a 4295 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 4296 else
4297 {
5a15f56f 4298 /* This symbol is local, or marked to become local. */
b34976b6 4299 relocate = TRUE;
5a15f56f 4300 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 4301 }
4302
cbe950e9 4303 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 4304
62d78908
L		 4305 if (sreloc == NULL || sreloc->contents == NULL)
4306 {
4307 r = bfd_reloc_notsupported;
4308 goto check_relocation_error;
4309 }
0c715baa 4310
59d6ffb2 4311 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH		 4312
4313 /* If this reloc is against an external symbol, we do
4314 not want to fiddle with the addend. Otherwise, we
4315 need to include the symbol value so that it becomes
4316 an addend for the dynamic reloc. */
0f88be7a 4317 if (! relocate)
252b5132
RH		 4318 continue;
4319 }
252b5132
RH		 4320 break;
4321
37e55690 4322 case R_386_TLS_IE:
0e1862bb 4323 if (!bfd_link_executable (info))
37e55690 4324 {
947216bf 4325 Elf_Internal_Rela outrel;
37e55690 4326 asection *sreloc;
37e55690
JJ		 4327
4328 outrel.r_offset = rel->r_offset
4329 + input_section->output_section->vma
4330 + input_section->output_offset;
4331 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4332 sreloc = elf_section_data (input_section)->sreloc;
4333 if (sreloc == NULL)
4334 abort ();
59d6ffb2 4335 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4336 }
4337 /* Fall through */
4338
13ae64f3 4339 case R_386_TLS_GD:
67a4f2b7
AO		 4340 case R_386_TLS_GOTDESC:
4341 case R_386_TLS_DESC_CALL:
13ae64f3 4342 case R_386_TLS_IE_32:
37e55690 4343 case R_386_TLS_GOTIE:
13ae64f3
JJ		 4344 tls_type = GOT_UNKNOWN;
4345 if (h == NULL && local_got_offsets)
4346 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
4347 else if (h != NULL)
142411ca 4348 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ		 4349 if (tls_type == GOT_TLS_IE)
4350 tls_type = GOT_TLS_IE_NEG;
142411ca
L		 4351
4352 if (! elf_i386_tls_transition (info, input_bfd,
4353 input_section, contents,
4354 symtab_hdr, sym_hashes,
4355 &r_type, tls_type, rel,
4c544807 4356 relend, h, r_symndx))
142411ca 4357 return FALSE;
13ae64f3
JJ		 4358
4359 if (r_type == R_386_TLS_LE_32)
4360 {
82e51918 4361 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 4362 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
4363 {
142411ca 4364 unsigned int type;
13ae64f3
JJ		 4365 bfd_vma roff;
4366
4367 /* GD->LE transition. */
13ae64f3 4368 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4369 if (type == 0x04)
4370 {
4371 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4372 Change it into:
4373 movl %gs:0, %eax; subl $foo@tpoff, %eax
4374 (6 byte form of subl). */
13ae64f3
JJ		 4375 memcpy (contents + rel->r_offset - 3,
4376 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 4377 roff = rel->r_offset + 5;
13ae64f3
JJ		 4378 }
4379 else
4380 {
142411ca
L		 4381 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4382 Change it into:
4383 movl %gs:0, %eax; subl $foo@tpoff, %eax
4384 (6 byte form of subl). */
4385 memcpy (contents + rel->r_offset - 2,
4386 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
4387 roff = rel->r_offset + 6;
13ae64f3 4388 }
eb4ff4d6 4389 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 4390 contents + roff);
a3fadc9a 4391 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3 4392 rel++;
60f2e42e 4393 wrel++;
13ae64f3
JJ		 4394 continue;
4395 }
67a4f2b7
AO		 4396 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4397 {
4398 /* GDesc -> LE transition.
4399 It's originally something like:
4400 leal x@tlsdesc(%ebx), %eax
4401
4402 leal x@ntpoff, %eax
4403
4404 Registers other than %eax may be set up here. */
4405
142411ca 4406 unsigned int val;
67a4f2b7
AO		 4407 bfd_vma roff;
4408
67a4f2b7 4409 roff = rel->r_offset;
67a4f2b7 4410 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 4411
4412 /* Now modify the instruction as appropriate. */
4413 /* aoliva FIXME: remove the above and xor the byte
4414 below with 0x86. */
4415 bfd_put_8 (output_bfd, val ^ 0x86,
4416 contents + roff - 1);
eb4ff4d6 4417 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO		 4418 contents + roff);
4419 continue;
4420 }
4421 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4422 {
4423 /* GDesc -> LE transition.
4424 It's originally:
4425 call *(%eax)
4426 Turn it into:
142411ca 4427 xchg %ax,%ax */
67a4f2b7 4428
67a4f2b7 4429 bfd_vma roff;
6bbec505 4430
67a4f2b7 4431 roff = rel->r_offset;
10efb593 4432 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4433 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4434 continue;
4435 }
37e55690 4436 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 4437 {
142411ca 4438 unsigned int val;
13ae64f3
JJ		 4439
4440 /* IE->LE transition:
37e55690
JJ		 4441 Originally it can be one of:
4442 movl foo, %eax
4443 movl foo, %reg
4444 addl foo, %reg
4445 We change it into:
4446 movl $foo, %eax
4447 movl $foo, %reg
4448 addl $foo, %reg. */
37e55690 4449 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ		 4450 if (val == 0xa1)
4451 {
4452 /* movl foo, %eax. */
55fd94b0
AM		 4453 bfd_put_8 (output_bfd, 0xb8,
4454 contents + rel->r_offset - 1);
37e55690 4455 }
299bf759 4456 else
37e55690 4457 {
142411ca
L		 4458 unsigned int type;
4459
55fd94b0
AM		 4460 type = bfd_get_8 (input_bfd,
4461 contents + rel->r_offset - 2);
299bf759 4462 switch (type)
26e41594 4463 {
299bf759
L		 4464 case 0x8b:
4465 /* movl */
299bf759
L		 4466 bfd_put_8 (output_bfd, 0xc7,
4467 contents + rel->r_offset - 2);
4468 bfd_put_8 (output_bfd,
4469 0xc0 | ((val >> 3) & 7),
4470 contents + rel->r_offset - 1);
4471 break;
4472 case 0x03:
4473 /* addl */
299bf759
L		 4474 bfd_put_8 (output_bfd, 0x81,
4475 contents + rel->r_offset - 2);
4476 bfd_put_8 (output_bfd,
4477 0xc0 | ((val >> 3) & 7),
4478 contents + rel->r_offset - 1);
4479 break;
4480 default:
4481 BFD_FAIL ();
4482 break;
26e41594 4483 }
37e55690 4484 }
eb4ff4d6 4485 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4486 contents + rel->r_offset);
4487 continue;
4488 }
4489 else
4490 {
4491 unsigned int val, type;
4492
4493 /* {IE_32,GOTIE}->LE transition:
4494 Originally it can be one of:
13ae64f3 4495 subl foo(%reg1), %reg2
13ae64f3 4496 movl foo(%reg1), %reg2
37e55690 4497 addl foo(%reg1), %reg2
13ae64f3
JJ		 4498 We change it into:
4499 subl $foo, %reg2
37e55690
JJ		 4500 movl $foo, %reg2 (6 byte form)
4501 addl $foo, %reg2. */
13ae64f3
JJ		 4502 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
4503 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ		 4504 if (type == 0x8b)
4505 {
4506 /* movl */
13ae64f3
JJ		 4507 bfd_put_8 (output_bfd, 0xc7,
4508 contents + rel->r_offset - 2);
4509 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4510 contents + rel->r_offset - 1);
4511 }
4512 else if (type == 0x2b)
4513 {
4514 /* subl */
13ae64f3
JJ		 4515 bfd_put_8 (output_bfd, 0x81,
4516 contents + rel->r_offset - 2);
4517 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
4518 contents + rel->r_offset - 1);
4519 }
37e55690
JJ		 4520 else if (type == 0x03)
4521 {
4522 /* addl */
4523 bfd_put_8 (output_bfd, 0x81,
4524 contents + rel->r_offset - 2);
4525 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4526 contents + rel->r_offset - 1);
4527 }
13ae64f3
JJ		 4528 else
4529 BFD_FAIL ();
37e55690 4530 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 4531 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ		 4532 contents + rel->r_offset);
4533 else
eb4ff4d6 4534 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 4535 contents + rel->r_offset);
13ae64f3
JJ		 4536 continue;
4537 }
4538 }
4539
6de2ae4a 4540 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4541 abort ();
4542
4543 if (h != NULL)
67a4f2b7
AO		 4544 {
4545 off = h->got.offset;
4546 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
4547 }
13ae64f3
JJ		 4548 else
4549 {
4550 if (local_got_offsets == NULL)
4551 abort ();
4552
4553 off = local_got_offsets[r_symndx];
67a4f2b7 4554 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 4555 }
4556
4557 if ((off & 1) != 0)
4558 off &= ~1;
26e41594 4559 else
13ae64f3 4560 {
947216bf 4561 Elf_Internal_Rela outrel;
91d6fa6a 4562 int dr_type;
67a4f2b7 4563 asection *sreloc;
13ae64f3 4564
6de2ae4a 4565 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4566 abort ();
4567
67a4f2b7
AO		 4568 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4569
4570 if (GOT_TLS_GDESC_P (tls_type))
4571 {
59d6ffb2 4572 bfd_byte *loc;
67a4f2b7
AO		 4573 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4574 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L		 4575 <= htab->elf.sgotplt->size);
4576 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4577 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 4578 + offplt
4579 + htab->sgotplt_jump_table_size);
6de2ae4a 4580 sreloc = htab->elf.srelplt;
67a4f2b7 4581 loc = sreloc->contents;
5ae0bfb6
RS		 4582 loc += (htab->next_tls_desc_index++
4583 * sizeof (Elf32_External_Rel));
67a4f2b7 4584 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4585 <= sreloc->contents + sreloc->size);
67a4f2b7
AO		 4586 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4587 if (indx == 0)
4588 {
4589 BFD_ASSERT (! unresolved_reloc);
4590 bfd_put_32 (output_bfd,
eb4ff4d6 4591 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4592 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4593 + htab->sgotplt_jump_table_size + 4);
4594 }
4595 else
4596 {
4597 bfd_put_32 (output_bfd, 0,
6de2ae4a 4598 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO		 4599 + htab->sgotplt_jump_table_size + 4);
4600 }
4601 }
4602
6de2ae4a 4603 sreloc = htab->elf.srelgot;
67a4f2b7 4604
6de2ae4a
L		 4605 outrel.r_offset = (htab->elf.sgot->output_section->vma
4606 + htab->elf.sgot->output_offset + off);
13ae64f3 4607
67a4f2b7 4608 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4609 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 4610 else if (GOT_TLS_GDESC_P (tls_type))
4611 goto dr_done;
37e55690
JJ		 4612 else if (tls_type == GOT_TLS_IE_POS)
4613 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 4614 else
4615 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4616
37e55690 4617 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L		 4618 bfd_put_32 (output_bfd,
4619 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4620 htab->elf.sgot->contents + off);
37e55690 4621 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4622 bfd_put_32 (output_bfd,
eb4ff4d6 4623 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4624 htab->elf.sgot->contents + off);
67a4f2b7 4625 else if (dr_type != R_386_TLS_DESC)
c366c25e 4626 bfd_put_32 (output_bfd, 0,
6de2ae4a 4627 htab->elf.sgot->contents + off);
13ae64f3 4628 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4629
59d6ffb2 4630 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4631
67a4f2b7 4632 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 4633 {
4634 if (indx == 0)
4635 {
82e51918 4636 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4637 bfd_put_32 (output_bfd,
eb4ff4d6 4638 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4639 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4640 }
4641 else
4642 {
4643 bfd_put_32 (output_bfd, 0,
6de2ae4a 4644 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ		 4645 outrel.r_info = ELF32_R_INFO (indx,
4646 R_386_TLS_DTPOFF32);
4647 outrel.r_offset += 4;
59d6ffb2 4648 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ		 4649 }
4650 }
37e55690
JJ		 4651 else if (tls_type == GOT_TLS_IE_BOTH)
4652 {
4653 bfd_put_32 (output_bfd,
eb4ff4d6
L		 4654 (indx == 0
4655 ? relocation - elf_i386_dtpoff_base (info)
4656 : 0),
6de2ae4a 4657 htab->elf.sgot->contents + off + 4);
37e55690
JJ		 4658 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4659 outrel.r_offset += 4;
59d6ffb2 4660 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4661 }
13ae64f3 4662
67a4f2b7 4663 dr_done:
13ae64f3
JJ		 4664 if (h != NULL)
4665 h->got.offset |= 1;
4666 else
4667 local_got_offsets[r_symndx] |= 1;
4668 }
4669
67a4f2b7
AO		 4670 if (off >= (bfd_vma) -2
4671 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4672 abort ();
67a4f2b7
AO		 4673 if (r_type == R_386_TLS_GOTDESC
4674 || r_type == R_386_TLS_DESC_CALL)
4675 {
4676 relocation = htab->sgotplt_jump_table_size + offplt;
4677 unresolved_reloc = FALSE;
4678 }
4679 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4680 {
6de2ae4a
L		 4681 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4682 + htab->elf.sgotplt->output_offset;
4683 relocation = htab->elf.sgot->output_section->vma
4684 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ		 4685 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4686 && tls_type == GOT_TLS_IE_BOTH)
4687 relocation += 4;
4688 if (r_type == R_386_TLS_IE)
8c37241b 4689 relocation += g_o_t;
b34976b6 4690 unresolved_reloc = FALSE;
13ae64f3 4691 }
67a4f2b7 4692 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 4693 {
4694 unsigned int val, type;
4695 bfd_vma roff;
4696
4697 /* GD->IE transition. */
13ae64f3 4698 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ		 4699 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4700 if (type == 0x04)
4701 {
4702 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4703 Change it into:
4704 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4705 val >>= 3;
142411ca 4706 roff = rel->r_offset - 3;
13ae64f3
JJ		 4707 }
4708 else
4709 {
4710 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4711 Change it into:
4712 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ		 4713 roff = rel->r_offset - 2;
4714 }
4715 memcpy (contents + roff,
4716 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4717 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 4718 /* If foo is used only with foo@gotntpoff(%reg) and
4719 foo@indntpoff, but not with foo@gottpoff(%reg), change
4720 subl $foo@gottpoff(%reg), %eax
4721 into:
4722 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 4723 if (tls_type == GOT_TLS_IE_POS)
4724 contents[roff + 6] = 0x03;
8c37241b 4725 bfd_put_32 (output_bfd,
6de2ae4a
L		 4726 htab->elf.sgot->output_section->vma
4727 + htab->elf.sgot->output_offset + off
4728 - htab->elf.sgotplt->output_section->vma
4729 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ		 4730 contents + roff + 8);
4731 /* Skip R_386_PLT32. */
4732 rel++;
60f2e42e 4733 wrel++;
13ae64f3
JJ		 4734 continue;
4735 }
67a4f2b7
AO		 4736 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4737 {
4738 /* GDesc -> IE transition.
4739 It's originally something like:
4740 leal x@tlsdesc(%ebx), %eax
4741
4742 Change it to:
142411ca 4743 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO		 4744 or:
4745 movl x@gottpoff(%ebx), %eax # before negl %eax
4746
4747 Registers other than %eax may be set up here. */
4748
67a4f2b7
AO		 4749 bfd_vma roff;
4750
4751 /* First, make sure it's a leal adding ebx to a 32-bit
4752 offset into any register, although it's probably
4753 almost always going to be eax. */
4754 roff = rel->r_offset;
67a4f2b7
AO		 4755
4756 /* Now modify the instruction as appropriate. */
4757 /* To turn a leal into a movl in the form we use it, it
4758 suffices to change the first byte from 0x8d to 0x8b.
4759 aoliva FIXME: should we decide to keep the leal, all
4760 we have to do is remove the statement below, and
4761 adjust the relaxation of R_386_TLS_DESC_CALL. */
4762 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4763
4764 if (tls_type == GOT_TLS_IE_BOTH)
4765 off += 4;
4766
4767 bfd_put_32 (output_bfd,
6de2ae4a
L		 4768 htab->elf.sgot->output_section->vma
4769 + htab->elf.sgot->output_offset + off
4770 - htab->elf.sgotplt->output_section->vma
4771 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO		 4772 contents + roff);
4773 continue;
4774 }
4775 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4776 {
4777 /* GDesc -> IE transition.
4778 It's originally:
4779 call *(%eax)
4780
4781 Change it to:
142411ca 4782 xchg %ax,%ax
67a4f2b7
AO		 4783 or
4784 negl %eax
4785 depending on how we transformed the TLS_GOTDESC above.
4786 */
4787
67a4f2b7
AO		 4788 bfd_vma roff;
4789
67a4f2b7 4790 roff = rel->r_offset;
67a4f2b7
AO		 4791
4792 /* Now modify the instruction as appropriate. */
4793 if (tls_type != GOT_TLS_IE_NEG)
4794 {
10efb593
L		 4795 /* xchg %ax,%ax */
4796 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 4797 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4798 }
4799 else
4800 {
4801 /* negl %eax */
4802 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4803 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4804 }
4805
4806 continue;
4807 }
4808 else
4809 BFD_ASSERT (FALSE);
13ae64f3
JJ		 4810 break;
4811
4812 case R_386_TLS_LDM:
142411ca
L		 4813 if (! elf_i386_tls_transition (info, input_bfd,
4814 input_section, contents,
4815 symtab_hdr, sym_hashes,
4816 &r_type, GOT_UNKNOWN, rel,
4c544807 4817 relend, h, r_symndx))
142411ca 4818 return FALSE;
13ae64f3 4819
142411ca
L		 4820 if (r_type != R_386_TLS_LDM)
4821 {
13ae64f3 4822 /* LD->LE transition:
13ae64f3
JJ		 4823 leal foo(%reg), %eax; call ___tls_get_addr.
4824 We change it into:
4825 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4826 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ		 4827 memcpy (contents + rel->r_offset - 2,
4828 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4829 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3 4830 rel++;
60f2e42e 4831 wrel++;
13ae64f3
JJ		 4832 continue;
4833 }
4834
6de2ae4a 4835 if (htab->elf.sgot == NULL)
13ae64f3
JJ		 4836 abort ();
4837
4838 off = htab->tls_ldm_got.offset;
4839 if (off & 1)
4840 off &= ~1;
4841 else
4842 {
947216bf 4843 Elf_Internal_Rela outrel;
13ae64f3 4844
6de2ae4a 4845 if (htab->elf.srelgot == NULL)
13ae64f3
JJ		 4846 abort ();
4847
6de2ae4a
L		 4848 outrel.r_offset = (htab->elf.sgot->output_section->vma
4849 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ		 4850
4851 bfd_put_32 (output_bfd, 0,
6de2ae4a 4852 htab->elf.sgot->contents + off);
13ae64f3 4853 bfd_put_32 (output_bfd, 0,
6de2ae4a 4854 htab->elf.sgot->contents + off + 4);
13ae64f3 4855 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4856 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ		 4857 htab->tls_ldm_got.offset |= 1;
4858 }
6de2ae4a
L		 4859 relocation = htab->elf.sgot->output_section->vma
4860 + htab->elf.sgot->output_offset + off
4861 - htab->elf.sgotplt->output_section->vma
4862 - htab->elf.sgotplt->output_offset;
b34976b6 4863 unresolved_reloc = FALSE;
13ae64f3
JJ		 4864 break;
4865
4866 case R_386_TLS_LDO_32:
0e1862bb
L		 4867 if (!bfd_link_executable (info)
4868 || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4869 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ		 4870 else
4871 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4872 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4873 break;
4874
4875 case R_386_TLS_LE_32:
13ae64f3 4876 case R_386_TLS_LE:
0e1862bb 4877 if (!bfd_link_executable (info))
37e55690 4878 {
947216bf 4879 Elf_Internal_Rela outrel;
37e55690 4880 asection *sreloc;
37e55690
JJ		 4881
4882 outrel.r_offset = rel->r_offset
4883 + input_section->output_section->vma
4884 + input_section->output_offset;
4885 if (h != NULL && h->dynindx != -1)
4886 indx = h->dynindx;
4887 else
4888 indx = 0;
4889 if (r_type == R_386_TLS_LE_32)
4890 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4891 else
4892 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4893 sreloc = elf_section_data (input_section)->sreloc;
4894 if (sreloc == NULL)
4895 abort ();
59d6ffb2 4896 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ		 4897 if (indx)
4898 continue;
4899 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4900 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4901 else
eb4ff4d6 4902 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ		 4903 }
4904 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4905 relocation = elf_i386_tpoff (info, relocation);
37e55690 4906 else
eb4ff4d6 4907 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ		 4908 break;
4909
252b5132
RH		 4910 default:
4911 break;
4912 }
4913
239e1f3a
AM		 4914 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4915 because such sections are not SEC_ALLOC and thus ld.so will
4916 not process them. */
8c694914 4917 if (unresolved_reloc
239e1f3a 4918 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 4919 && h->def_dynamic)
4920 && _bfd_elf_section_offset (output_bfd, info, input_section,
4921 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ		 4922 {
4923 (*_bfd_error_handler)
843fe662 4924 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 4925 input_bfd,
4926 input_section,
6a30718d 4927 (long) rel->r_offset,
843fe662 4928 howto->name,
6a30718d 4929 h->root.root.string);
b34976b6 4930 return FALSE;
6a30718d 4931 }
83be169b 4932
cbe950e9 4933do_relocation:
252b5132
RH		 4934 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4935 contents, rel->r_offset,
55fd94b0 4936 relocation, 0);
252b5132 4937
62d78908 4938check_relocation_error:
cf5c0c5b 4939 if (r != bfd_reloc_ok)
252b5132 4940 {
cf5c0c5b 4941 const char *name;
ffb2e45b 4942
cf5c0c5b
AM		 4943 if (h != NULL)
4944 name = h->root.root.string;
4945 else
4946 {
4947 name = bfd_elf_string_from_elf_section (input_bfd,
4948 symtab_hdr->sh_link,
4949 sym->st_name);
4950 if (name == NULL)
b34976b6 4951 return FALSE;
cf5c0c5b
AM		 4952 if (*name == '\0')
4953 name = bfd_section_name (input_bfd, sec);
4954 }
ffb2e45b 4955
cf5c0c5b
AM		 4956 if (r == bfd_reloc_overflow)
4957 {
cf5c0c5b 4958 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4959 (info, (h ? &h->root : NULL), name, howto->name,
4960 (bfd_vma) 0, input_bfd, input_section,
4961 rel->r_offset)))
b34976b6 4962 return FALSE;
cf5c0c5b
AM		 4963 }
4964 else
4965 {
4966 (*_bfd_error_handler)
d003868e
AM		 4967 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4968 input_bfd, input_section,
cf5c0c5b 4969 (long) rel->r_offset, name, (int) r);
b34976b6 4970 return FALSE;
cf5c0c5b 4971 }
252b5132 4972 }
60f2e42e
L		 4973
4974 if (wrel != rel)
4975 *wrel = *rel;
4976 }
4977
4978 if (wrel != rel)
4979 {
4980 Elf_Internal_Shdr *rel_hdr;
4981 size_t deleted = rel - wrel;
4982
4983 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
4984 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
4985 if (rel_hdr->sh_size == 0)
4986 {
4987 /* It is too late to remove an empty reloc section. Leave
4988 one NONE reloc.
4989 ??? What is wrong with an empty section??? */
4990 rel_hdr->sh_size = rel_hdr->sh_entsize;
4991 deleted -= 1;
4992 }
4993 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
4994 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
4995 input_section->reloc_count -= deleted;
252b5132
RH		 4996 }
4997
b34976b6 4998 return TRUE;
252b5132
RH		 4999}
5000
5001/* Finish up dynamic symbol handling. We set the contents of various
5002 dynamic sections here. */
5003
b34976b6 5004static bfd_boolean
55fd94b0
AM		 5005elf_i386_finish_dynamic_symbol (bfd *output_bfd,
5006 struct bfd_link_info *info,
5007 struct elf_link_hash_entry *h,
5008 Elf_Internal_Sym *sym)
252b5132 5009{
6725bdbf 5010 struct elf_i386_link_hash_table *htab;
25e762b9
RM		 5011 unsigned plt_entry_size;
5012 const struct elf_i386_backend_data *abed;
dd7e64d4 5013 struct elf_i386_link_hash_entry *eh;
252b5132 5014
6725bdbf 5015 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5016 if (htab == NULL)
5017 return FALSE;
252b5132 5018
25e762b9
RM		 5019 abed = get_elf_i386_backend_data (output_bfd);
5020 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
5021
dd7e64d4
L		 5022 eh = (struct elf_i386_link_hash_entry *) h;
5023
252b5132
RH		 5024 if (h->plt.offset != (bfd_vma) -1)
5025 {
252b5132
RH		 5026 bfd_vma plt_index;
5027 bfd_vma got_offset;
947216bf
AM		 5028 Elf_Internal_Rela rel;
5029 bfd_byte *loc;
cbe950e9
L		 5030 asection *plt, *gotplt, *relplt;
5031
5032 /* When building a static executable, use .iplt, .igot.plt and
5033 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 5034 if (htab->elf.splt != NULL)
cbe950e9 5035 {
6de2ae4a
L		 5036 plt = htab->elf.splt;
5037 gotplt = htab->elf.sgotplt;
5038 relplt = htab->elf.srelplt;
cbe950e9
L		 5039 }
5040 else
5041 {
6de2ae4a
L		 5042 plt = htab->elf.iplt;
5043 gotplt = htab->elf.igotplt;
5044 relplt = htab->elf.irelplt;
cbe950e9 5045 }
252b5132
RH		 5046
5047 /* This symbol has an entry in the procedure linkage table. Set
5048 it up. */
5049
cbe950e9 5050 if ((h->dynindx == -1
0e1862bb 5051 && !((h->forced_local || bfd_link_executable (info))
cbe950e9
L		 5052 && h->def_regular
5053 && h->type == STT_GNU_IFUNC))
5054 || plt == NULL
5055 || gotplt == NULL
5056 || relplt == NULL)
cec7f46a 5057 abort ();
252b5132
RH		 5058
5059 /* Get the index in the procedure linkage table which
5060 corresponds to this symbol. This is the index of this symbol
5061 in all the symbols for which we are making plt entries. The
cbe950e9 5062 first entry in the procedure linkage table is reserved.
252b5132 5063
cbe950e9 5064 Get the offset into the .got table of the entry that
252b5132 5065 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 5066 The first three are reserved.
6bbec505 5067
cbe950e9
L		 5068 For static executables, we don't reserve anything. */
5069
6de2ae4a 5070 if (plt == htab->elf.splt)
cbe950e9 5071 {
e1f98742
L		 5072 got_offset = h->plt.offset / plt_entry_size - 1;
5073 got_offset = (got_offset + 3) * 4;
cbe950e9
L		 5074 }
5075 else
5076 {
e1f98742
L		 5077 got_offset = h->plt.offset / plt_entry_size;
5078 got_offset = got_offset * 4;
cbe950e9 5079 }
252b5132
RH		 5080
5081 /* Fill in the entry in the procedure linkage table. */
0e1862bb 5082 if (! bfd_link_pic (info))
252b5132 5083 {
25e762b9
RM		 5084 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
5085 abed->plt->plt_entry_size);
252b5132 5086 bfd_put_32 (output_bfd,
cbe950e9
L		 5087 (gotplt->output_section->vma
5088 + gotplt->output_offset
252b5132 5089 + got_offset),
25e762b9
RM		 5090 plt->contents + h->plt.offset
5091 + abed->plt->plt_got_offset);
eac338cf 5092
25e762b9 5093 if (abed->is_vxworks)
eac338cf
PB		 5094 {
5095 int s, k, reloc_index;
5096
5097 /* Create the R_386_32 relocation referencing the GOT
5098 for this PLT entry. */
5099
5100 /* S: Current slot number (zero-based). */
25e762b9
RM		 5101 s = ((h->plt.offset - abed->plt->plt_entry_size)
5102 / abed->plt->plt_entry_size);
eac338cf 5103 /* K: Number of relocations for PLTResolve. */
0e1862bb 5104 if (bfd_link_pic (info))
eac338cf
PB		 5105 k = PLTRESOLVE_RELOCS_SHLIB;
5106 else
5107 k = PLTRESOLVE_RELOCS;
5108 /* Skip the PLTresolve relocations, and the relocations for
5109 the other PLT slots. */
5110 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
5111 loc = (htab->srelplt2->contents + reloc_index
5112 * sizeof (Elf32_External_Rel));
5113
6de2ae4a
L		 5114 rel.r_offset = (htab->elf.splt->output_section->vma
5115 + htab->elf.splt->output_offset
eac338cf 5116 + h->plt.offset + 2),
7325306f 5117 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5118 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
5119
5120 /* Create the R_386_32 relocation referencing the beginning of
5121 the PLT for this GOT entry. */
6de2ae4a
L		 5122 rel.r_offset = (htab->elf.sgotplt->output_section->vma
5123 + htab->elf.sgotplt->output_offset
eac338cf 5124 + got_offset);
7325306f 5125 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 5126 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 5127 loc + sizeof (Elf32_External_Rel));
eac338cf 5128 }
252b5132
RH		 5129 }
5130 else
5131 {
25e762b9
RM		 5132 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
5133 abed->plt->plt_entry_size);
252b5132 5134 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM		 5135 plt->contents + h->plt.offset
5136 + abed->plt->plt_got_offset);
252b5132
RH		 5137 }
5138
252b5132
RH		 5139 /* Fill in the entry in the global offset table. */
5140 bfd_put_32 (output_bfd,
cbe950e9
L		 5141 (plt->output_section->vma
5142 + plt->output_offset
252b5132 5143 + h->plt.offset
25e762b9 5144 + abed->plt->plt_lazy_offset),
cbe950e9 5145 gotplt->contents + got_offset);
252b5132
RH		 5146
5147 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L		 5148 rel.r_offset = (gotplt->output_section->vma
5149 + gotplt->output_offset
252b5132 5150 + got_offset);
cbe950e9 5151 if (h->dynindx == -1
0e1862bb 5152 || ((bfd_link_executable (info)
cbe950e9
L		 5153 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5154 && h->def_regular
5155 && h->type == STT_GNU_IFUNC))
5156 {
5157 /* If an STT_GNU_IFUNC symbol is locally defined, generate
5158 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
5159 in the .got.plt section. */
5160 bfd_put_32 (output_bfd,
23209a78 5161 (h->root.u.def.value
cbe950e9
L		 5162 + h->root.u.def.section->output_section->vma
5163 + h->root.u.def.section->output_offset),
5164 gotplt->contents + got_offset);
5165 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L		 5166 /* R_386_IRELATIVE comes last. */
5167 plt_index = htab->next_irelative_index--;
cbe950e9
L		 5168 }
5169 else
e1f98742
L		 5170 {
5171 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
5172 plt_index = htab->next_jump_slot_index++;
5173 }
cbe950e9 5174 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 5175 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 5176
e1f98742
L		 5177 /* Don't fill PLT entry for static executables. */
5178 if (plt == htab->elf.splt)
5179 {
5180 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
5181 plt->contents + h->plt.offset
5182 + abed->plt->plt_reloc_offset);
5183 bfd_put_32 (output_bfd, - (h->plt.offset
5184 + abed->plt->plt_plt_offset + 4),
5185 plt->contents + h->plt.offset
5186 + abed->plt->plt_plt_offset);
5187 }
dd7e64d4
L		 5188 }
5189 else if (eh->plt_got.offset != (bfd_vma) -1)
5190 {
5191 bfd_vma got_offset, plt_offset;
5192 asection *plt, *got, *gotplt;
5193 const bfd_byte *got_plt_entry;
5194
5195 /* Offset of displacement of the indirect jump. */
5196 bfd_vma plt_got_offset = 2;
e1f98742 5197
dd7e64d4
L		 5198 /* Set the entry in the GOT procedure linkage table. */
5199 plt = htab->plt_got;
5200 got = htab->elf.sgot;
5201 gotplt = htab->elf.sgotplt;
5202 got_offset = h->got.offset;
5203
5204 if (got_offset == (bfd_vma) -1
5205 || plt == NULL
5206 || got == NULL
5207 || gotplt == NULL)
5208 abort ();
5209
5210 /* Fill in the entry in the GOT procedure linkage table. */
0e1862bb 5211 if (! bfd_link_pic (info))
252b5132 5212 {
dd7e64d4
L		 5213 got_plt_entry = elf_i386_got_plt_entry;
5214 got_offset += got->output_section->vma + got->output_offset;
252b5132 5215 }
dd7e64d4
L		 5216 else
5217 {
5218 got_plt_entry = elf_i386_pic_got_plt_entry;
5219 got_offset += (got->output_section->vma
5220 + got->output_offset
5221 - gotplt->output_section->vma
5222 - gotplt->output_offset);
5223 }
5224
5225 plt_offset = eh->plt_got.offset;
5226 memcpy (plt->contents + plt_offset, got_plt_entry,
5227 sizeof (elf_i386_got_plt_entry));
5228 bfd_put_32 (output_bfd, got_offset,
5229 plt->contents + plt_offset + plt_got_offset);
5230 }
5231
5232 if (!h->def_regular
5233 && (h->plt.offset != (bfd_vma) -1
5234 || eh->plt_got.offset != (bfd_vma) -1))
5235 {
5236 /* Mark the symbol as undefined, rather than as defined in
5237 the .plt section. Leave the value if there were any
5238 relocations where pointer equality matters (this is a clue
5239 for the dynamic linker, to make function pointer
5240 comparisons work between an application and shared
5241 library), otherwise set it to zero. If a function is only
5242 called from a binary, there is no need to slow down
5243 shared libraries because of that. */
5244 sym->st_shndx = SHN_UNDEF;
5245 if (!h->pointer_equality_needed)
5246 sym->st_value = 0;
252b5132
RH		 5247 }
5248
13ae64f3 5249 if (h->got.offset != (bfd_vma) -1
67a4f2b7 5250 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 5251 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 5252 {
947216bf 5253 Elf_Internal_Rela rel;
252b5132
RH		 5254
5255 /* This symbol has an entry in the global offset table. Set it
5256 up. */
5257
6de2ae4a 5258 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 5259 abort ();
252b5132 5260
6de2ae4a
L		 5261 rel.r_offset = (htab->elf.sgot->output_section->vma
5262 + htab->elf.sgot->output_offset
dc810e39 5263 + (h->got.offset & ~(bfd_vma) 1));
252b5132 5264
dd5724d5
AM		 5265 /* If this is a static link, or it is a -Bsymbolic link and the
5266 symbol is defined locally or was forced to be local because
5267 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 5268 The entry in the global offset table will already have been
5269 initialized in the relocate_section function. */
710ab287 5270 if (h->def_regular
0018b0a3
L		 5271 && h->type == STT_GNU_IFUNC)
5272 {
0e1862bb 5273 if (bfd_link_pic (info))
710ab287
L		 5274 {
5275 /* Generate R_386_GLOB_DAT. */
5276 goto do_glob_dat;
5277 }
5278 else
5279 {
cd2b2c10
L		 5280 asection *plt;
5281
710ab287
L		 5282 if (!h->pointer_equality_needed)
5283 abort ();
5284
5285 /* For non-shared object, we can't use .got.plt, which
5286 contains the real function addres if we need pointer
5287 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 5288 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L		 5289 bfd_put_32 (output_bfd,
5290 (plt->output_section->vma
5291 + plt->output_offset + h->plt.offset),
6de2ae4a 5292 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 5293 return TRUE;
5294 }
0018b0a3 5295 }
0e1862bb 5296 else if (bfd_link_pic (info)
0018b0a3 5297 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 5298 {
6725bdbf 5299 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 5300 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
5301 }
252b5132
RH		 5302 else
5303 {
dd5724d5 5304 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 5305do_glob_dat:
6725bdbf 5306 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 5307 htab->elf.sgot->contents + h->got.offset);
252b5132
RH		 5308 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
5309 }
5310
59d6ffb2 5311 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH		 5312 }
5313
f5385ebf 5314 if (h->needs_copy)
252b5132 5315 {
947216bf 5316 Elf_Internal_Rela rel;
252b5132
RH		 5317
5318 /* This symbol needs a copy reloc. Set it up. */
5319
ffb2e45b
AM		 5320 if (h->dynindx == -1
5321 || (h->root.type != bfd_link_hash_defined
5322 && h->root.type != bfd_link_hash_defweak)
5323 || htab->srelbss == NULL)
5324 abort ();
252b5132
RH		 5325
5326 rel.r_offset = (h->root.u.def.value
5327 + h->root.u.def.section->output_section->vma
5328 + h->root.u.def.section->output_offset);
5329 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 5330 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH		 5331 }
5332
b34976b6 5333 return TRUE;
252b5132
RH		 5334}
5335
c25bc9fc
L		 5336/* Finish up local dynamic symbol handling. We set the contents of
5337 various dynamic sections here. */
5338
5339static bfd_boolean
5340elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
5341{
5342 struct elf_link_hash_entry *h
5343 = (struct elf_link_hash_entry *) *slot;
5344 struct bfd_link_info *info
23209a78 5345 = (struct bfd_link_info *) inf;
c25bc9fc
L		 5346
5347 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
5348 h, NULL);
5349}
5350
38701953
AM		 5351/* Used to decide how to sort relocs in an optimal manner for the
5352 dynamic linker, before writing them out. */
5353
5354static enum elf_reloc_type_class
cae1fbbb 5355elf_i386_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 5356 const asection *rel_sec ATTRIBUTE_UNUSED,
5357 const Elf_Internal_Rela *rela)
38701953 5358{
cae1fbbb
L		 5359 bfd *abfd = info->output_bfd;
5360 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
5361 struct elf_link_hash_table *htab = elf_hash_table (info);
cae1fbbb 5362
d9e3b590
L		 5363 if (htab->dynsym != NULL
5364 && htab->dynsym->contents != NULL)
5365 {
5366 /* Check relocation against STT_GNU_IFUNC symbol if there are
5367 dynamic symbols. */
5368 unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
5369 Elf_Internal_Sym sym;
5370 if (!bed->s->swap_symbol_in (abfd,
5371 (htab->dynsym->contents
5372 + r_symndx * sizeof (Elf32_External_Sym)),
5373 0, &sym))
5374 abort ();
5375
5376 if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
5377 return reloc_class_ifunc;
5378 }
cae1fbbb 5379
55fd94b0 5380 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 5381 {
5382 case R_386_RELATIVE:
5383 return reloc_class_relative;
5384 case R_386_JUMP_SLOT:
5385 return reloc_class_plt;
5386 case R_386_COPY:
5387 return reloc_class_copy;
5388 default:
5389 return reloc_class_normal;
5390 }
5391}
5392
252b5132
RH		 5393/* Finish up the dynamic sections. */
5394
b34976b6 5395static bfd_boolean
55fd94b0
AM		 5396elf_i386_finish_dynamic_sections (bfd *output_bfd,
5397 struct bfd_link_info *info)
252b5132 5398{
6725bdbf 5399 struct elf_i386_link_hash_table *htab;
252b5132 5400 bfd *dynobj;
252b5132 5401 asection *sdyn;
25e762b9 5402 const struct elf_i386_backend_data *abed;
252b5132 5403
6725bdbf 5404 htab = elf_i386_hash_table (info);
4dfe6ac6
NC		 5405 if (htab == NULL)
5406 return FALSE;
5407
ebe50bae 5408 dynobj = htab->elf.dynobj;
3d4d4302 5409 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 5410 abed = get_elf_i386_backend_data (output_bfd);
252b5132 5411
ebe50bae 5412 if (htab->elf.dynamic_sections_created)
252b5132 5413 {
252b5132
RH		 5414 Elf32_External_Dyn *dyncon, *dynconend;
5415
6de2ae4a 5416 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 5417 abort ();
252b5132
RH		 5418
5419 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 5420 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 5421 for (; dyncon < dynconend; dyncon++)
5422 {
5423 Elf_Internal_Dyn dyn;
51b64d56 5424 asection *s;
252b5132
RH		 5425
5426 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5427
5428 switch (dyn.d_tag)
5429 {
5430 default:
25e762b9
RM		 5431 if (abed->is_vxworks
5432 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 5433 break;
0ac8d2ca 5434 continue;
252b5132
RH		 5435
5436 case DT_PLTGOT:
6de2ae4a 5437 s = htab->elf.sgotplt;
8c37241b 5438 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 5439 break;
5440
252b5132 5441 case DT_JMPREL:
6de2ae4a 5442 s = htab->elf.srelplt;
6348e046 5443 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 5444 break;
5445
5446 case DT_PLTRELSZ:
6de2ae4a 5447 s = htab->elf.srelplt;
eea6121a 5448 dyn.d_un.d_val = s->size;
252b5132
RH		 5449 break;
5450
5451 case DT_RELSZ:
5452 /* My reading of the SVR4 ABI indicates that the
5453 procedure linkage table relocs (DT_JMPREL) should be
5454 included in the overall relocs (DT_REL). This is
5455 what Solaris does. However, UnixWare can not handle
5456 that case. Therefore, we override the DT_RELSZ entry
6348e046 5457 here to make it not include the JMPREL relocs. */
6de2ae4a 5458 s = htab->elf.srelplt;
6348e046
AM		 5459 if (s == NULL)
5460 continue;
eea6121a 5461 dyn.d_un.d_val -= s->size;
6348e046
AM		 5462 break;
5463
5464 case DT_REL:
5465 /* We may not be using the standard ELF linker script.
5466 If .rel.plt is the first .rel section, we adjust
5467 DT_REL to not include it. */
6de2ae4a 5468 s = htab->elf.srelplt;
6348e046
AM		 5469 if (s == NULL)
5470 continue;
5471 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
5472 continue;
eea6121a 5473 dyn.d_un.d_ptr += s->size;
252b5132
RH		 5474 break;
5475 }
0ac8d2ca
AM		 5476
5477 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 5478 }
5479
5480 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 5481 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132 5482 {
0e1862bb 5483 if (bfd_link_pic (info))
eac338cf 5484 {
25e762b9
RM		 5485 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
5486 abed->plt->plt0_entry_size);
5487 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5488 abed->plt0_pad_byte,
5489 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 5490 }
252b5132
RH		 5491 else
5492 {
25e762b9
RM		 5493 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
5494 abed->plt->plt0_entry_size);
5495 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
5496 abed->plt0_pad_byte,
5497 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 5498 bfd_put_32 (output_bfd,
6de2ae4a
L		 5499 (htab->elf.sgotplt->output_section->vma
5500 + htab->elf.sgotplt->output_offset
6725bdbf 5501 + 4),
25e762b9
RM		 5502 htab->elf.splt->contents
5503 + abed->plt->plt0_got1_offset);
252b5132 5504 bfd_put_32 (output_bfd,
6de2ae4a
L		 5505 (htab->elf.sgotplt->output_section->vma
5506 + htab->elf.sgotplt->output_offset
6725bdbf 5507 + 8),
25e762b9
RM		 5508 htab->elf.splt->contents
5509 + abed->plt->plt0_got2_offset);
eac338cf 5510
25e762b9 5511 if (abed->is_vxworks)
eac338cf
PB		 5512 {
5513 Elf_Internal_Rela rel;
7325306f 5514
eac338cf
PB		 5515 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
5516 On IA32 we use REL relocations so the addend goes in
5517 the PLT directly. */
6de2ae4a
L		 5518 rel.r_offset = (htab->elf.splt->output_section->vma
5519 + htab->elf.splt->output_offset
25e762b9 5520 + abed->plt->plt0_got1_offset);
7325306f 5521 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5522 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5523 htab->srelplt2->contents);
5524 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L		 5525 rel.r_offset = (htab->elf.splt->output_section->vma
5526 + htab->elf.splt->output_offset
25e762b9 5527 + abed->plt->plt0_got2_offset);
7325306f 5528 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5529 bfd_elf32_swap_reloc_out (output_bfd, &rel,
5530 htab->srelplt2->contents +
5531 sizeof (Elf32_External_Rel));
5532 }
252b5132
RH		 5533 }
5534
5535 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5536 really seem like the right value. */
6de2ae4a 5537 elf_section_data (htab->elf.splt->output_section)
6725bdbf 5538 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 5539
5540 /* Correct the .rel.plt.unloaded relocations. */
0e1862bb 5541 if (abed->is_vxworks && !bfd_link_pic (info))
eac338cf 5542 {
25e762b9
RM		 5543 int num_plts = (htab->elf.splt->size
5544 / abed->plt->plt_entry_size) - 1;
4c9b0de6 5545 unsigned char *p;
eac338cf
PB		 5546
5547 p = htab->srelplt2->contents;
0e1862bb 5548 if (bfd_link_pic (info))
eac338cf
PB		 5549 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
5550 else
5551 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
5552
5553 for (; num_plts; num_plts--)
5554 {
5555 Elf_Internal_Rela rel;
5556 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5557 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 5558 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5559 p += sizeof (Elf32_External_Rel);
5560
5561 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 5562 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 5563 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
5564 p += sizeof (Elf32_External_Rel);
5565 }
5566 }
252b5132
RH		 5567 }
5568 }
5569
6de2ae4a 5570 if (htab->elf.sgotplt)
252b5132 5571 {
56d4289c
L		 5572 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5573 {
5574 (*_bfd_error_handler)
5575 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5576 return FALSE;
5577 }
5578
12d0ee4a 5579 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5580 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM		 5581 {
5582 bfd_put_32 (output_bfd,
55fd94b0 5583 (sdyn == NULL ? 0
12d0ee4a 5584 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L		 5585 htab->elf.sgotplt->contents);
5586 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
5587 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 5588 }
252b5132 5589
6de2ae4a 5590 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 5591 }
8c37241b 5592
e41b3a13 5593 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 5594 if (htab->plt_eh_frame != NULL
5595 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 5596 {
5597 if (htab->elf.splt != NULL
5598 && htab->elf.splt->size != 0
5599 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5600 && htab->elf.splt->output_section != NULL
5601 && htab->plt_eh_frame->output_section != NULL)
5602 {
5603 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5604 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5605 + htab->plt_eh_frame->output_offset
5606 + PLT_FDE_START_OFFSET;
5607 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5608 htab->plt_eh_frame->contents
5609 + PLT_FDE_START_OFFSET);
5610 }
5611 if (htab->plt_eh_frame->sec_info_type
dbaa2011 5612 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 5613 {
5614 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5615 htab->plt_eh_frame,
5616 htab->plt_eh_frame->contents))
5617 return FALSE;
5618 }
5619 }
5620
6de2ae4a
L		 5621 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5622 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 5623
c25bc9fc
L		 5624 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5625 htab_traverse (htab->loc_hash_table,
5626 elf_i386_finish_local_dynamic_symbol,
5627 info);
5628
b34976b6 5629 return TRUE;
252b5132
RH		 5630}
5631
3972882e 5632/* Return an array of PLT entry symbol values. */
4c45e5c9 5633
3972882e
L		 5634static bfd_vma *
5635elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5636 asection *relplt)
4c45e5c9 5637{
3972882e
L		 5638 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5639 arelent *p;
5640 long count, i;
5641 bfd_vma *plt_sym_val;
144bed8d 5642 bfd_vma plt_offset;
3972882e
L		 5643 bfd_byte *plt_contents;
5644 const struct elf_i386_backend_data *bed
5645 = get_elf_i386_backend_data (abfd);
5646 Elf_Internal_Shdr *hdr;
5647
5648 /* Get the .plt section contents. */
5649 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5650 if (plt_contents == NULL)
5651 return NULL;
5652 if (!bfd_get_section_contents (abfd, (asection *) plt,
5653 plt_contents, 0, plt->size))
5654 {
5655bad_return:
5656 free (plt_contents);
5657 return NULL;
5658 }
144bed8d 5659
3972882e
L		 5660 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5661 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5662 goto bad_return;
144bed8d 5663
3972882e
L		 5664 hdr = &elf_section_data (relplt)->this_hdr;
5665 count = relplt->size / hdr->sh_entsize;
5666
5667 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5668 if (plt_sym_val == NULL)
5669 goto bad_return;
cca5b8b6 5670
35181b3e 5671 for (i = 0; i < count; i++)
3972882e 5672 plt_sym_val[i] = -1;
cca5b8b6 5673
3972882e
L		 5674 plt_offset = bed->plt->plt_entry_size;
5675 p = relplt->relocation;
5676 for (i = 0; i < count; i++, p++)
144bed8d 5677 {
3972882e
L		 5678 long reloc_index;
5679
6f25f223 5680 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
533d0af0 5681 if (p->howto == NULL)
6f25f223 5682 continue;
533d0af0
L		 5683
5684 if (p->howto->type != R_386_JUMP_SLOT
5685 && p->howto->type != R_386_IRELATIVE)
3972882e
L		 5686 continue;
5687
5688 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
5689 + bed->plt->plt_reloc_offset));
5690 reloc_index /= sizeof (Elf32_External_Rel);
ec1f73bb
AM		 5691 if (reloc_index < count)
5692 plt_sym_val[reloc_index] = plt->vma + plt_offset;
5693
144bed8d 5694 plt_offset += bed->plt->plt_entry_size;
fca6ae69
L		 5695
5696 /* PR binutils/18437: Skip extra relocations in the .rel.plt
5697 section. */
5698 if (plt_offset >= plt->size)
5699 break;
144bed8d
L		 5700 }
5701
3972882e
L		 5702 free (plt_contents);
5703
5704 return plt_sym_val;
5705}
5706
5707/* Similar to _bfd_elf_get_synthetic_symtab. */
5708
5709static long
5710elf_i386_get_synthetic_symtab (bfd *abfd,
5711 long symcount,
5712 asymbol **syms,
5713 long dynsymcount,
5714 asymbol **dynsyms,
5715 asymbol **ret)
5716{
5717 asection *plt = bfd_get_section_by_name (abfd, ".plt");
5718 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
5719 dynsymcount, dynsyms, ret,
5720 plt,
5721 elf_i386_get_plt_sym_val);
4c45e5c9
JJ		 5722}
5723
fdc90cb4
JJ		 5724/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5725
5726static bfd_boolean
5727elf_i386_hash_symbol (struct elf_link_hash_entry *h)
5728{
5729 if (h->plt.offset != (bfd_vma) -1
5730 && !h->def_regular
5731 && !h->pointer_equality_needed)
5732 return FALSE;
5733
5734 return _bfd_elf_hash_symbol (h);
5735}
4c45e5c9 5736
d8045f23
NC		 5737/* Hook called by the linker routine which adds symbols from an object
5738 file. */
5739
5740static bfd_boolean
c16153ae 5741elf_i386_add_symbol_hook (bfd * abfd,
f1885d1e 5742 struct bfd_link_info * info,
d8045f23
NC		 5743 Elf_Internal_Sym * sym,
5744 const char ** namep ATTRIBUTE_UNUSED,
5745 flagword * flagsp ATTRIBUTE_UNUSED,
5746 asection ** secp ATTRIBUTE_UNUSED,
5747 bfd_vma * valp ATTRIBUTE_UNUSED)
5748{
13a2df29 5749 if (ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE
f1885d1e
AM		 5750 && (abfd->flags & DYNAMIC) == 0
5751 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
13a2df29
L		 5752 elf_tdata (info->output_bfd)->has_gnu_symbols
5753 |= elf_gnu_symbol_unique;
d8045f23
NC		 5754
5755 return TRUE;
5756}
5757
6d00b590 5758#define TARGET_LITTLE_SYM i386_elf32_vec
252b5132
RH		 5759#define TARGET_LITTLE_NAME "elf32-i386"
5760#define ELF_ARCH bfd_arch_i386
ae95ffa6 5761#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH		 5762#define ELF_MACHINE_CODE EM_386
5763#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 5764
5765#define elf_backend_can_gc_sections 1
51b64d56 5766#define elf_backend_can_refcount 1
252b5132
RH		 5767#define elf_backend_want_got_plt 1
5768#define elf_backend_plt_readonly 1
5769#define elf_backend_want_plt_sym 0
5770#define elf_backend_got_header_size 12
e41b3a13 5771#define elf_backend_plt_alignment 4
f7483970 5772#define elf_backend_extern_protected_data 1
252b5132 5773
8c29f035
AM		 5774/* Support RELA for objdump of prelink objects. */
5775#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 5776#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5777
13ae64f3 5778#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5779
dd5724d5
AM		 5780#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5781#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
5782#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5783#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
3972882e 5784#define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
dd5724d5
AM		 5785
5786#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5787#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5788#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5789#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5790#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5791#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 5792#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5793#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5794#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5795#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 5796#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5797#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5798#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 5799#define elf_backend_relocate_section elf_i386_relocate_section
5800#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5801#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 5802#define elf_backend_omit_section_dynsym \
5803 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
fdc90cb4 5804#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23 5805#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
dd5724d5 5806
252b5132 5807#include "elf32-target.h"
2bc3c89a
AM		 5808
5809/* FreeBSD support. */
5810
5811#undef TARGET_LITTLE_SYM
6d00b590 5812#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
2bc3c89a
AM		 5813#undef TARGET_LITTLE_NAME
5814#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 5815#undef ELF_OSABI
5816#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 5817
5818/* The kernel recognizes executables as valid only if they carry a
5819 "FreeBSD" label in the ELF header. So we put this label on all
5820 executables and (for simplicity) also all other object files. */
5821
2bc3c89a 5822static void
d8045f23 5823elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5824{
78245035 5825 _bfd_elf_post_process_headers (abfd, info);
2bc3c89a 5826
2bc3c89a 5827#ifdef OLD_FREEBSD_ABI_LABEL
cf7363b4
L		 5828 {
5829 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5830 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
5831 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
5832 }
caf47ea6 5833#endif
2bc3c89a
AM		 5834}
5835
5836#undef elf_backend_post_process_headers
d8045f23 5837#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC		 5838#undef elf32_bed
5839#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5840
d8045f23
NC		 5841#undef elf_backend_add_symbol_hook
5842
2bc3c89a 5843#include "elf32-target.h"
eac338cf 5844
a6cc6b3b
RO		 5845/* Solaris 2. */
5846
5847#undef TARGET_LITTLE_SYM
6d00b590 5848#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
a6cc6b3b
RO		 5849#undef TARGET_LITTLE_NAME
5850#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5851
914082d1
L		 5852#undef elf_backend_post_process_headers
5853
a6cc6b3b
RO		 5854/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5855 objects won't be recognized. */
5856#undef ELF_OSABI
5857
5858#undef elf32_bed
5859#define elf32_bed elf32_i386_sol2_bed
5860
7dc98aea
RO		 5861/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5862 boundary. */
5863#undef elf_backend_static_tls_alignment
5864#define elf_backend_static_tls_alignment 8
5865
a6cc6b3b
RO		 5866/* The Solaris 2 ABI requires a plt symbol on all platforms.
5867
5868 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5869 File, p.63. */
5870#undef elf_backend_want_plt_sym
5871#define elf_backend_want_plt_sym 1
5872
5873#include "elf32-target.h"
5874
bf64a951
L		 5875/* Intel MCU support. */
5876
5877static bfd_boolean
5878elf32_iamcu_elf_object_p (bfd *abfd)
5879{
5880 /* Set the right machine number for an IAMCU elf32 file. */
5881 bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
5882 return TRUE;
5883}
5884
5885#undef TARGET_LITTLE_SYM
5886#define TARGET_LITTLE_SYM iamcu_elf32_vec
5887#undef TARGET_LITTLE_NAME
5888#define TARGET_LITTLE_NAME "elf32-iamcu"
5889#undef ELF_ARCH
5890#define ELF_ARCH bfd_arch_iamcu
5891
5892#undef ELF_MACHINE_CODE
5893#define ELF_MACHINE_CODE EM_IAMCU
5894
5895#undef ELF_OSABI
5896
5897#undef elf32_bed
5898#define elf32_bed elf32_iamcu_bed
5899
5900#undef elf_backend_object_p
5901#define elf_backend_object_p elf32_iamcu_elf_object_p
5902
5903#undef elf_backend_static_tls_alignment
5904
5905#undef elf_backend_want_plt_sym
5906#define elf_backend_want_plt_sym 0
5907
5908#include "elf32-target.h"
5909
5910/* Restore defaults. */
5911#undef ELF_ARCH
5912#define ELF_ARCH bfd_arch_i386
5913#undef ELF_MACHINE_CODE
5914#define ELF_MACHINE_CODE EM_386
5915
a27e4371
RM		 5916/* Native Client support. */
5917
5918#undef TARGET_LITTLE_SYM
6d00b590 5919#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
a27e4371
RM		 5920#undef TARGET_LITTLE_NAME
5921#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5922#undef elf32_bed
5923#define elf32_bed elf32_i386_nacl_bed
5924
5925#undef ELF_MAXPAGESIZE
5926#define ELF_MAXPAGESIZE 0x10000
5927
5928/* Restore defaults. */
5929#undef ELF_OSABI
5930#undef elf_backend_want_plt_sym
5931#define elf_backend_want_plt_sym 0
5932#undef elf_backend_post_process_headers
a27e4371
RM		 5933#undef elf_backend_static_tls_alignment
5934
5935/* NaCl uses substantially different PLT entries for the same effects. */
5936
5937#undef elf_backend_plt_alignment
5938#define elf_backend_plt_alignment 5
5939#define NACL_PLT_ENTRY_SIZE 64
5940#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5941
5942static const bfd_byte elf_i386_nacl_plt0_entry[] =
5943 {
5944 0xff, 0x35, /* pushl contents of address */
5945 0, 0, 0, 0, /* replaced with address of .got + 4. */
5946 0x8b, 0x0d, /* movl contents of address, %ecx */
5947 0, 0, 0, 0, /* replaced with address of .got + 8. */
5948 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5949 0xff, 0xe1 /* jmp *%ecx */
5950 };
5951
5952static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5953 {
5954 0x8b, 0x0d, /* movl contents of address, %ecx */
5955 0, 0, 0, 0, /* replaced with GOT slot address. */
5956 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5957 0xff, 0xe1, /* jmp *%ecx */
5958
5959 /* Pad to the next 32-byte boundary with nop instructions. */
5960 0x90,
5961 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5962 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5963
5964 /* Lazy GOT entries point here (32-byte aligned). */
5965 0x68, /* pushl immediate */
5966 0, 0, 0, 0, /* replaced with reloc offset. */
5967 0xe9, /* jmp relative */
5968 0, 0, 0, 0, /* replaced with offset to .plt. */
5969
5970 /* Pad to the next 32-byte boundary with nop instructions. */
5971 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5972 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5973 0x90, 0x90
5974 };
5975
5976static const bfd_byte
5977elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5978 {
5979 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5980 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5981 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5982 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM		 5983
5984 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5985 so pad to that size with nop instructions. */
5986 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM		 5987 };
5988
5989static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5990 {
5991 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5992 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5993 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5994 0xff, 0xe1, /* jmp *%ecx */
5995
5996 /* Pad to the next 32-byte boundary with nop instructions. */
5997 0x90,
5998 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5999 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6000
6001 /* Lazy GOT entries point here (32-byte aligned). */
6002 0x68, /* pushl immediate */
6003 0, 0, 0, 0, /* replaced with offset into relocation table. */
6004 0xe9, /* jmp relative */
6005 0, 0, 0, 0, /* replaced with offset to start of .plt. */
6006
6007 /* Pad to the next 32-byte boundary with nop instructions. */
6008 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6009 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
6010 0x90, 0x90
6011 };
6012
6013static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
6014 {
6015#if (PLT_CIE_LENGTH != 20 \
6016 || PLT_FDE_LENGTH != 36 \
6017 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
6018 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
6019# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
6020#endif
6021 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
6022 0, 0, 0, 0, /* CIE ID */
6023 1, /* CIE version */
6024 'z', 'R', 0, /* Augmentation string */
6025 1, /* Code alignment factor */
6026 0x7c, /* Data alignment factor: -4 */
6027 8, /* Return address column */
6028 1, /* Augmentation size */
6029 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
6030 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
6031 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
6032 DW_CFA_nop, DW_CFA_nop,
6033
6034 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
6035 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
6036 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
6037 0, 0, 0, 0, /* .plt size goes here */
6038 0, /* Augmentation size */
6039 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
6040 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
6041 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
6042 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
6043 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
6044 13, /* Block length */
6045 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
6046 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
6047 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
6048 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
6049 DW_CFA_nop, DW_CFA_nop
6050 };
6051
6052static const struct elf_i386_plt_layout elf_i386_nacl_plt =
6053 {
6054 elf_i386_nacl_plt0_entry, /* plt0_entry */
6055 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
6056 2, /* plt0_got1_offset */
6057 8, /* plt0_got2_offset */
6058 elf_i386_nacl_plt_entry, /* plt_entry */
6059 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
6060 2, /* plt_got_offset */
6061 33, /* plt_reloc_offset */
6062 38, /* plt_plt_offset */
6063 32, /* plt_lazy_offset */
6064 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
6065 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
6066 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
6067 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
6068 };
6069
6070static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
6071 {
6072 &elf_i386_nacl_plt, /* plt */
6073 0x90, /* plt0_pad_byte: nop insn */
6074 0, /* is_vxworks */
6075 };
6076
64b384e1
RM		 6077static bfd_boolean
6078elf32_i386_nacl_elf_object_p (bfd *abfd)
6079{
6080 /* Set the right machine number for a NaCl i386 ELF32 file. */
6081 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
6082 return TRUE;
6083}
6084
a27e4371
RM		 6085#undef elf_backend_arch_data
6086#define elf_backend_arch_data &elf_i386_nacl_arch_bed
6087
64b384e1
RM		 6088#undef elf_backend_object_p
6089#define elf_backend_object_p elf32_i386_nacl_elf_object_p
5a68afcf
RM		 6090#undef elf_backend_modify_segment_map
6091#define elf_backend_modify_segment_map nacl_modify_segment_map
6092#undef elf_backend_modify_program_headers
6093#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 6094#undef elf_backend_final_write_processing
6095#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 6096
a27e4371
RM		 6097#include "elf32-target.h"
6098
5a68afcf 6099/* Restore defaults. */
64b384e1 6100#undef elf_backend_object_p
5a68afcf
RM		 6101#undef elf_backend_modify_segment_map
6102#undef elf_backend_modify_program_headers
887badb3 6103#undef elf_backend_final_write_processing
5a68afcf 6104
eac338cf
PB		 6105/* VxWorks support. */
6106
6107#undef TARGET_LITTLE_SYM
6d00b590 6108#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
eac338cf
PB		 6109#undef TARGET_LITTLE_NAME
6110#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 6111#undef ELF_OSABI
a27e4371
RM		 6112#undef elf_backend_plt_alignment
6113#define elf_backend_plt_alignment 4
eac338cf 6114
23209a78
RM		 6115static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
6116 {
25e762b9 6117 &elf_i386_plt, /* plt */
23209a78
RM		 6118 0x90, /* plt0_pad_byte */
6119 1, /* is_vxworks */
6120 };
eac338cf 6121
23209a78
RM		 6122#undef elf_backend_arch_data
6123#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 6124
13285a1b 6125#undef elf_backend_relocs_compatible
eac338cf
PB		 6126#undef elf_backend_add_symbol_hook
6127#define elf_backend_add_symbol_hook \
6128 elf_vxworks_add_symbol_hook
6129#undef elf_backend_link_output_symbol_hook
6130#define elf_backend_link_output_symbol_hook \
9c72ff84 6131 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 6132#undef elf_backend_emit_relocs
6133#define elf_backend_emit_relocs elf_vxworks_emit_relocs
6134#undef elf_backend_final_write_processing
6135#define elf_backend_final_write_processing \
6136 elf_vxworks_final_write_processing
7dc98aea 6137#undef elf_backend_static_tls_alignment
eac338cf
PB		 6138
6139/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
6140 define it. */
6141#undef elf_backend_want_plt_sym
6142#define elf_backend_want_plt_sym 1
6143
6144#undef elf32_bed
6145#define elf32_bed elf32_i386_vxworks_bed
6146
6147#include "elf32-target.h"
GDB Binutils - Deliverables
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