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[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
b2a8e766 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3eb128b2 3 2003, 2004, 2005 Free Software Foundation, Inc.
252b5132 4
571fe01f 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
571fe01f
NC		 7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
252b5132 11
571fe01f
NC		 12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
252b5132 16
571fe01f
NC		 17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
53e09e0a 19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02110-1301, USA. */
252b5132
RH		 20
21#include "bfd.h"
22#include "sysdep.h"
23#include "bfdlink.h"
24#include "libbfd.h"
25#include "elf-bfd.h"
26
55fd94b0
AM		 27/* 386 uses REL relocations instead of RELA. */
28#define USE_REL 1
252b5132
RH		 29
30#include "elf/i386.h"
31
32static reloc_howto_type elf_howto_table[]=
33{
b34976b6 34 HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
1b452ec6 35 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 36 TRUE, 0x00000000, 0x00000000, FALSE),
37 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 38 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 39 TRUE, 0xffffffff, 0xffffffff, FALSE),
40 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 41 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 42 TRUE, 0xffffffff, 0xffffffff, TRUE),
43 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 44 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 45 TRUE, 0xffffffff, 0xffffffff, FALSE),
46 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 47 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 48 TRUE, 0xffffffff, 0xffffffff, TRUE),
49 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 50 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 51 TRUE, 0xffffffff, 0xffffffff, FALSE),
52 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 53 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 54 TRUE, 0xffffffff, 0xffffffff, FALSE),
55 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 56 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 57 TRUE, 0xffffffff, 0xffffffff, FALSE),
58 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 59 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 60 TRUE, 0xffffffff, 0xffffffff, FALSE),
61 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 62 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 63 TRUE, 0xffffffff, 0xffffffff, FALSE),
64 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 65 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 66 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 67
dc47f327
AM		 68 /* We have a gap in the reloc numbers here.
69 R_386_standard counts the number up to this point, and
70 R_386_ext_offset is the value to subtract from a reloc type of
71 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 72#define R_386_standard (R_386_GOTPC + 1)
73#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 74
37e55690 75 /* These relocs are a GNU extension. */
b34976b6 76 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 77 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 78 TRUE, 0xffffffff, 0xffffffff, FALSE),
79 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 80 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 81 TRUE, 0xffffffff, 0xffffffff, FALSE),
82 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 83 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 84 TRUE, 0xffffffff, 0xffffffff, FALSE),
85 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 86 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 87 TRUE, 0xffffffff, 0xffffffff, FALSE),
88 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 89 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 90 TRUE, 0xffffffff, 0xffffffff, FALSE),
91 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 92 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 93 TRUE, 0xffffffff, 0xffffffff, FALSE),
94 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 95 bfd_elf_generic_reloc, "R_386_16",
b34976b6
AM		 96 TRUE, 0xffff, 0xffff, FALSE),
97 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 98 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 99 TRUE, 0xffff, 0xffff, TRUE),
100 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 101 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 102 TRUE, 0xff, 0xff, FALSE),
103 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 104 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 105 TRUE, 0xff, 0xff, TRUE),
dc47f327 106
55fd94b0
AM		 107#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
108#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 109 /* These are common with Solaris TLS implementation. */
b34976b6 110 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 111 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 112 TRUE, 0xffffffff, 0xffffffff, FALSE),
113 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 114 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 115 TRUE, 0xffffffff, 0xffffffff, FALSE),
116 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 117 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 118 TRUE, 0xffffffff, 0xffffffff, FALSE),
119 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 120 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 121 TRUE, 0xffffffff, 0xffffffff, FALSE),
122 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 123 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 124 TRUE, 0xffffffff, 0xffffffff, FALSE),
125 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 126 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 127 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 128
129 /* Another gap. */
55fd94b0
AM		 130#define R_386_tls (R_386_TLS_TPOFF32 + 1 - R_386_tls_offset)
131#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_tls)
252b5132
RH		 132
133/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 134 HOWTO (R_386_GNU_VTINHERIT, /* type */
135 0, /* rightshift */
136 2, /* size (0 = byte, 1 = short, 2 = long) */
137 0, /* bitsize */
b34976b6 138 FALSE, /* pc_relative */
252b5132
RH		 139 0, /* bitpos */
140 complain_overflow_dont, /* complain_on_overflow */
141 NULL, /* special_function */
142 "R_386_GNU_VTINHERIT", /* name */
b34976b6 143 FALSE, /* partial_inplace */
252b5132
RH		 144 0, /* src_mask */
145 0, /* dst_mask */
b34976b6 146 FALSE), /* pcrel_offset */
252b5132
RH		 147
148/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 149 HOWTO (R_386_GNU_VTENTRY, /* type */
150 0, /* rightshift */
151 2, /* size (0 = byte, 1 = short, 2 = long) */
152 0, /* bitsize */
b34976b6 153 FALSE, /* pc_relative */
252b5132
RH		 154 0, /* bitpos */
155 complain_overflow_dont, /* complain_on_overflow */
156 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
157 "R_386_GNU_VTENTRY", /* name */
b34976b6 158 FALSE, /* partial_inplace */
252b5132
RH		 159 0, /* src_mask */
160 0, /* dst_mask */
b34976b6 161 FALSE) /* pcrel_offset */
dc47f327 162
55fd94b0 163#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 164
165};
166
252b5132 167#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 168#define TRACE(str) \
169 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 170#else
171#define TRACE(str)
172#endif
173
174static reloc_howto_type *
55fd94b0
AM		 175elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
176 bfd_reloc_code_real_type code)
252b5132
RH		 177{
178 switch (code)
179 {
180 case BFD_RELOC_NONE:
181 TRACE ("BFD_RELOC_NONE");
55fd94b0 182 return &elf_howto_table[R_386_NONE];
252b5132
RH		 183
184 case BFD_RELOC_32:
185 TRACE ("BFD_RELOC_32");
55fd94b0 186 return &elf_howto_table[R_386_32];
252b5132
RH		 187
188 case BFD_RELOC_CTOR:
189 TRACE ("BFD_RELOC_CTOR");
55fd94b0 190 return &elf_howto_table[R_386_32];
252b5132
RH		 191
192 case BFD_RELOC_32_PCREL:
193 TRACE ("BFD_RELOC_PC32");
55fd94b0 194 return &elf_howto_table[R_386_PC32];
252b5132
RH		 195
196 case BFD_RELOC_386_GOT32:
197 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 198 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 199
200 case BFD_RELOC_386_PLT32:
201 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 202 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 203
204 case BFD_RELOC_386_COPY:
205 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 206 return &elf_howto_table[R_386_COPY];
252b5132
RH		 207
208 case BFD_RELOC_386_GLOB_DAT:
209 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 210 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 211
212 case BFD_RELOC_386_JUMP_SLOT:
213 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 214 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 215
216 case BFD_RELOC_386_RELATIVE:
217 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 218 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 219
220 case BFD_RELOC_386_GOTOFF:
221 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 222 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 223
224 case BFD_RELOC_386_GOTPC:
225 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 226 return &elf_howto_table[R_386_GOTPC];
252b5132 227
37e55690
JJ		 228 /* These relocs are a GNU extension. */
229 case BFD_RELOC_386_TLS_TPOFF:
230 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 231 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 232
233 case BFD_RELOC_386_TLS_IE:
234 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 235 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 236
237 case BFD_RELOC_386_TLS_GOTIE:
238 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 239 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 240
13ae64f3
JJ		 241 case BFD_RELOC_386_TLS_LE:
242 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 243 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 244
245 case BFD_RELOC_386_TLS_GD:
246 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 247 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 248
249 case BFD_RELOC_386_TLS_LDM:
250 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 251 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 252
252b5132
RH		 253 case BFD_RELOC_16:
254 TRACE ("BFD_RELOC_16");
55fd94b0 255 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 256
257 case BFD_RELOC_16_PCREL:
258 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 259 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 260
261 case BFD_RELOC_8:
262 TRACE ("BFD_RELOC_8");
55fd94b0 263 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 264
265 case BFD_RELOC_8_PCREL:
266 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 267 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 268
13ae64f3
JJ		 269 /* Common with Sun TLS implementation. */
270 case BFD_RELOC_386_TLS_LDO_32:
271 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 272 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 273
274 case BFD_RELOC_386_TLS_IE_32:
275 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 276 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 277
278 case BFD_RELOC_386_TLS_LE_32:
279 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 280 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 281
282 case BFD_RELOC_386_TLS_DTPMOD32:
283 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 284 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 285
286 case BFD_RELOC_386_TLS_DTPOFF32:
287 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 288 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 289
290 case BFD_RELOC_386_TLS_TPOFF32:
291 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 292 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 293
252b5132
RH		 294 case BFD_RELOC_VTABLE_INHERIT:
295 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 296 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 297
298 case BFD_RELOC_VTABLE_ENTRY:
299 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 300 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 301
302 default:
303 break;
304 }
305
306 TRACE ("Unknown");
307 return 0;
308}
309
252b5132 310static void
55fd94b0
AM		 311elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
312 arelent *cache_ptr,
313 Elf_Internal_Rela *dst)
252b5132 314{
dc47f327
AM		 315 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
316 unsigned int indx;
317
318 if ((indx = r_type) >= R_386_standard
319 && ((indx = r_type - R_386_ext_offset) - R_386_standard
320 >= R_386_ext - R_386_standard)
13ae64f3
JJ		 321 && ((indx = r_type - R_386_tls_offset) - R_386_ext
322 >= R_386_tls - R_386_ext)
323 && ((indx = r_type - R_386_vt_offset) - R_386_tls
324 >= R_386_vt - R_386_tls))
252b5132 325 {
d003868e
AM		 326 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
327 abfd, (int) r_type);
55fd94b0 328 indx = R_386_NONE;
252b5132 329 }
dc47f327 330 cache_ptr->howto = &elf_howto_table[indx];
252b5132
RH		 331}
332
333/* Return whether a symbol name implies a local label. The UnixWare
334 2.1 cc generates temporary symbols that start with .X, so we
335 recognize them here. FIXME: do other SVR4 compilers also use .X?.
336 If so, we should move the .X recognition into
337 _bfd_elf_is_local_label_name. */
338
b34976b6 339static bfd_boolean
55fd94b0 340elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 341{
342 if (name[0] == '.' && name[1] == 'X')
b34976b6 343 return TRUE;
252b5132
RH		 344
345 return _bfd_elf_is_local_label_name (abfd, name);
346}
347\f
38701953 348/* Support for core dump NOTE sections. */
61adc1a4 349
b34976b6 350static bfd_boolean
55fd94b0 351elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 352{
353 int offset;
eea6121a 354 size_t size;
38701953 355
61adc1a4 356 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 357 {
61adc1a4
NC		 358 int pr_version = bfd_get_32 (abfd, note->descdata);
359
360 if (pr_version != 1)
361 return FALSE;
362
363 /* pr_cursig */
364 elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
365
366 /* pr_pid */
367 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
368
369 /* pr_reg */
370 offset = 28;
eea6121a 371 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 372 }
373 else
374 {
375 switch (note->descsz)
376 {
377 default:
378 return FALSE;
38701953 379
61adc1a4
NC		 380 case 144: /* Linux/i386 */
381 /* pr_cursig */
382 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 383
61adc1a4
NC		 384 /* pr_pid */
385 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
38701953 386
61adc1a4
NC		 387 /* pr_reg */
388 offset = 72;
eea6121a 389 size = 68;
38701953 390
61adc1a4
NC		 391 break;
392 }
38701953
AM		 393 }
394
395 /* Make a ".reg/999" section. */
396 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 397 size, note->descpos + offset);
38701953
AM		 398}
399
b34976b6 400static bfd_boolean
55fd94b0 401elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 402{
61adc1a4 403 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 404 {
61adc1a4
NC		 405 int pr_version = bfd_get_32 (abfd, note->descdata);
406
407 if (pr_version != 1)
b34976b6 408 return FALSE;
38701953 409
61adc1a4
NC		 410 elf_tdata (abfd)->core_program
411 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
412 elf_tdata (abfd)->core_command
413 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
414 }
415 else
416 {
417 switch (note->descsz)
418 {
419 default:
420 return FALSE;
421
422 case 124: /* Linux/i386 elf_prpsinfo. */
423 elf_tdata (abfd)->core_program
424 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
425 elf_tdata (abfd)->core_command
426 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
427 }
38701953
AM		 428 }
429
430 /* Note that for some reason, a spurious space is tacked
431 onto the end of the args in some (at least one anyway)
432 implementations, so strip it off if it exists. */
38701953
AM		 433 {
434 char *command = elf_tdata (abfd)->core_command;
435 int n = strlen (command);
436
437 if (0 < n && command[n - 1] == ' ')
438 command[n - 1] = '\0';
439 }
440
b34976b6 441 return TRUE;
38701953
AM		 442}
443\f
444/* Functions for the i386 ELF linker.
445
446 In order to gain some understanding of code in this file without
447 knowing all the intricate details of the linker, note the
448 following:
449
450 Functions named elf_i386_* are called by external routines, other
451 functions are only called locally. elf_i386_* functions appear
452 in this file more or less in the order in which they are called
453 from external routines. eg. elf_i386_check_relocs is called
454 early in the link process, elf_i386_finish_dynamic_sections is
455 one of the last functions. */
456
252b5132
RH		 457
458/* The name of the dynamic interpreter. This is put in the .interp
459 section. */
460
461#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
462
a23b6845
AM		 463/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
464 copying dynamic variables from a shared lib into an app's dynbss
465 section, and instead use a dynamic relocation to point into the
466 shared lib. */
467#define ELIMINATE_COPY_RELOCS 1
468
252b5132
RH		 469/* The size in bytes of an entry in the procedure linkage table. */
470
471#define PLT_ENTRY_SIZE 16
472
473/* The first entry in an absolute procedure linkage table looks like
474 this. See the SVR4 ABI i386 supplement to see how this works. */
475
476static const bfd_byte elf_i386_plt0_entry[PLT_ENTRY_SIZE] =
477{
478 0xff, 0x35, /* pushl contents of address */
479 0, 0, 0, 0, /* replaced with address of .got + 4. */
480 0xff, 0x25, /* jmp indirect */
481 0, 0, 0, 0, /* replaced with address of .got + 8. */
482 0, 0, 0, 0 /* pad out to 16 bytes. */
483};
484
485/* Subsequent entries in an absolute procedure linkage table look like
486 this. */
487
488static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
489{
490 0xff, 0x25, /* jmp indirect */
491 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
492 0x68, /* pushl immediate */
493 0, 0, 0, 0, /* replaced with offset into relocation table. */
494 0xe9, /* jmp relative */
495 0, 0, 0, 0 /* replaced with offset to start of .plt. */
496};
497
498/* The first entry in a PIC procedure linkage table look like this. */
499
500static const bfd_byte elf_i386_pic_plt0_entry[PLT_ENTRY_SIZE] =
501{
502 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
503 0xff, 0xa3, 8, 0, 0, 0, /* jmp *8(%ebx) */
504 0, 0, 0, 0 /* pad out to 16 bytes. */
505};
506
507/* Subsequent entries in a PIC procedure linkage table look like this. */
508
509static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
510{
511 0xff, 0xa3, /* jmp *offset(%ebx) */
512 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
513 0x68, /* pushl immediate */
514 0, 0, 0, 0, /* replaced with offset into relocation table. */
515 0xe9, /* jmp relative */
516 0, 0, 0, 0 /* replaced with offset to start of .plt. */
517};
518
519/* The i386 linker needs to keep track of the number of relocs that it
ffb2e45b
AM		 520 decides to copy as dynamic relocs in check_relocs for each symbol.
521 This is so that it can later discard them if they are found to be
522 unnecessary. We store the information in a field extending the
523 regular ELF linker hash table. */
252b5132 524
ffb2e45b 525struct elf_i386_dyn_relocs
252b5132 526{
ffb2e45b 527 struct elf_i386_dyn_relocs *next;
0c715baa
AM		 528
529 /* The input section of the reloc. */
530 asection *sec;
531
532 /* Total number of relocs copied for the input section. */
252b5132 533 bfd_size_type count;
0c715baa
AM		 534
535 /* Number of pc-relative relocs copied for the input section. */
536 bfd_size_type pc_count;
252b5132
RH		 537};
538
539/* i386 ELF linker hash entry. */
540
541struct elf_i386_link_hash_entry
542{
ebe50bae 543 struct elf_link_hash_entry elf;
252b5132 544
0c715baa 545 /* Track dynamic relocs copied for this symbol. */
ffb2e45b 546 struct elf_i386_dyn_relocs *dyn_relocs;
13ae64f3 547
37e55690
JJ		 548#define GOT_UNKNOWN 0
549#define GOT_NORMAL 1
550#define GOT_TLS_GD 2
551#define GOT_TLS_IE 4
552#define GOT_TLS_IE_POS 5
553#define GOT_TLS_IE_NEG 6
554#define GOT_TLS_IE_BOTH 7
555 unsigned char tls_type;
13ae64f3
JJ		 556};
557
558#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
559
560struct elf_i386_obj_tdata
561{
562 struct elf_obj_tdata root;
563
564 /* tls_type for each local got entry. */
565 char *local_got_tls_type;
252b5132
RH		 566};
567
13ae64f3
JJ		 568#define elf_i386_tdata(abfd) \
569 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
570
571#define elf_i386_local_got_tls_type(abfd) \
572 (elf_i386_tdata (abfd)->local_got_tls_type)
573
b34976b6 574static bfd_boolean
55fd94b0 575elf_i386_mkobject (bfd *abfd)
13ae64f3
JJ		 576{
577 bfd_size_type amt = sizeof (struct elf_i386_obj_tdata);
578 abfd->tdata.any = bfd_zalloc (abfd, amt);
579 if (abfd->tdata.any == NULL)
b34976b6
AM		 580 return FALSE;
581 return TRUE;
13ae64f3 582}
cedb70c5 583
252b5132
RH		 584/* i386 ELF linker hash table. */
585
586struct elf_i386_link_hash_table
587{
ebe50bae 588 struct elf_link_hash_table elf;
252b5132 589
6725bdbf
AM		 590 /* Short-cuts to get to dynamic linker sections. */
591 asection *sgot;
592 asection *sgotplt;
593 asection *srelgot;
594 asection *splt;
595 asection *srelplt;
596 asection *sdynbss;
597 asection *srelbss;
ec338859 598
13ae64f3
JJ		 599 union {
600 bfd_signed_vma refcount;
601 bfd_vma offset;
602 } tls_ldm_got;
603
ec338859
AM		 604 /* Small local sym to section mapping cache. */
605 struct sym_sec_cache sym_sec;
6725bdbf 606};
252b5132
RH		 607
608/* Get the i386 ELF linker hash table from a link_info structure. */
609
610#define elf_i386_hash_table(p) \
611 ((struct elf_i386_link_hash_table *) ((p)->hash))
612
613/* Create an entry in an i386 ELF linker hash table. */
614
615static struct bfd_hash_entry *
55fd94b0
AM		 616link_hash_newfunc (struct bfd_hash_entry *entry,
617 struct bfd_hash_table *table,
618 const char *string)
252b5132 619{
252b5132
RH		 620 /* Allocate the structure if it has not already been allocated by a
621 subclass. */
ebe50bae
AM		 622 if (entry == NULL)
623 {
624 entry = bfd_hash_allocate (table,
625 sizeof (struct elf_i386_link_hash_entry));
626 if (entry == NULL)
627 return entry;
628 }
252b5132
RH		 629
630 /* Call the allocation method of the superclass. */
ebe50bae
AM		 631 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
632 if (entry != NULL)
252b5132 633 {
ebe50bae
AM		 634 struct elf_i386_link_hash_entry *eh;
635
636 eh = (struct elf_i386_link_hash_entry *) entry;
637 eh->dyn_relocs = NULL;
13ae64f3 638 eh->tls_type = GOT_UNKNOWN;
252b5132
RH		 639 }
640
ebe50bae 641 return entry;
252b5132
RH		 642}
643
644/* Create an i386 ELF linker hash table. */
645
646static struct bfd_link_hash_table *
55fd94b0 647elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 648{
649 struct elf_i386_link_hash_table *ret;
dc810e39 650 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 651
55fd94b0 652 ret = bfd_malloc (amt);
ebe50bae 653 if (ret == NULL)
252b5132
RH		 654 return NULL;
655
ebe50bae 656 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
252b5132 657 {
e2d34d7d 658 free (ret);
252b5132
RH		 659 return NULL;
660 }
661
6725bdbf
AM		 662 ret->sgot = NULL;
663 ret->sgotplt = NULL;
664 ret->srelgot = NULL;
665 ret->splt = NULL;
666 ret->srelplt = NULL;
667 ret->sdynbss = NULL;
668 ret->srelbss = NULL;
7a624474 669 ret->tls_ldm_got.refcount = 0;
ec338859 670 ret->sym_sec.abfd = NULL;
6725bdbf 671
ebe50bae 672 return &ret->elf.root;
252b5132
RH		 673}
674
6725bdbf
AM		 675/* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up
676 shortcuts to them in our hash table. */
677
b34976b6 678static bfd_boolean
55fd94b0 679create_got_section (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 680{
681 struct elf_i386_link_hash_table *htab;
682
683 if (! _bfd_elf_create_got_section (dynobj, info))
b34976b6 684 return FALSE;
6725bdbf
AM		 685
686 htab = elf_i386_hash_table (info);
687 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
688 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
689 if (!htab->sgot || !htab->sgotplt)
690 abort ();
691
692 htab->srelgot = bfd_make_section (dynobj, ".rel.got");
693 if (htab->srelgot == NULL
694 || ! bfd_set_section_flags (dynobj, htab->srelgot,
695 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
696 | SEC_IN_MEMORY | SEC_LINKER_CREATED
697 | SEC_READONLY))
698 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
b34976b6
AM		 699 return FALSE;
700 return TRUE;
6725bdbf
AM		 701}
702
703/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
704 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
705 hash table. */
706
b34976b6 707static bfd_boolean
55fd94b0 708elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 709{
710 struct elf_i386_link_hash_table *htab;
711
712 htab = elf_i386_hash_table (info);
713 if (!htab->sgot && !create_got_section (dynobj, info))
b34976b6 714 return FALSE;
6725bdbf
AM		 715
716 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 717 return FALSE;
6725bdbf
AM		 718
719 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
720 htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt");
721 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
722 if (!info->shared)
723 htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
724
725 if (!htab->splt || !htab->srelplt || !htab->sdynbss
726 || (!info->shared && !htab->srelbss))
727 abort ();
728
b34976b6 729 return TRUE;
6725bdbf
AM		 730}
731
ebe50bae
AM		 732/* Copy the extra info we tack onto an elf_link_hash_entry. */
733
51b64d56 734static void
9c5bfbb7 735elf_i386_copy_indirect_symbol (const struct elf_backend_data *bed,
55fd94b0
AM		 736 struct elf_link_hash_entry *dir,
737 struct elf_link_hash_entry *ind)
ebe50bae
AM		 738{
739 struct elf_i386_link_hash_entry *edir, *eind;
740
741 edir = (struct elf_i386_link_hash_entry *) dir;
742 eind = (struct elf_i386_link_hash_entry *) ind;
743
bbd7ec4a 744 if (eind->dyn_relocs != NULL)
ebe50bae 745 {
bbd7ec4a
AM		 746 if (edir->dyn_relocs != NULL)
747 {
748 struct elf_i386_dyn_relocs **pp;
749 struct elf_i386_dyn_relocs *p;
750
1e370bd2 751 if (ind->root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 752 abort ();
753
754 /* Add reloc counts against the weak sym to the strong sym
755 list. Merge any entries against the same section. */
756 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
757 {
758 struct elf_i386_dyn_relocs *q;
759
760 for (q = edir->dyn_relocs; q != NULL; q = q->next)
761 if (q->sec == p->sec)
762 {
763 q->pc_count += p->pc_count;
764 q->count += p->count;
765 *pp = p->next;
766 break;
767 }
768 if (q == NULL)
769 pp = &p->next;
770 }
771 *pp = edir->dyn_relocs;
772 }
773
ebe50bae
AM		 774 edir->dyn_relocs = eind->dyn_relocs;
775 eind->dyn_relocs = NULL;
776 }
ebe50bae 777
cd67d266
JJ		 778 if (ind->root.type == bfd_link_hash_indirect
779 && dir->got.refcount <= 0)
780 {
781 edir->tls_type = eind->tls_type;
782 eind->tls_type = GOT_UNKNOWN;
783 }
81848ca0
AM		 784
785 if (ELIMINATE_COPY_RELOCS
786 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 787 && dir->dynamic_adjusted)
788 {
789 /* If called to transfer flags for a weakdef during processing
790 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
791 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
792 dir->ref_dynamic |= ind->ref_dynamic;
793 dir->ref_regular |= ind->ref_regular;
794 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
795 dir->needs_plt |= ind->needs_plt;
796 dir->pointer_equality_needed |= ind->pointer_equality_needed;
797 }
81848ca0
AM		 798 else
799 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
ebe50bae
AM		 800}
801
13ae64f3 802static int
55fd94b0 803elf_i386_tls_transition (struct bfd_link_info *info, int r_type, int is_local)
13ae64f3
JJ		 804{
805 if (info->shared)
806 return r_type;
807
808 switch (r_type)
809 {
810 case R_386_TLS_GD:
811 case R_386_TLS_IE_32:
812 if (is_local)
813 return R_386_TLS_LE_32;
814 return R_386_TLS_IE_32;
37e55690
JJ		 815 case R_386_TLS_IE:
816 case R_386_TLS_GOTIE:
817 if (is_local)
818 return R_386_TLS_LE_32;
819 return r_type;
13ae64f3
JJ		 820 case R_386_TLS_LDM:
821 return R_386_TLS_LE_32;
822 }
823
824 return r_type;
825}
826
252b5132 827/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 828 calculate needed space in the global offset table, procedure linkage
829 table, and dynamic reloc sections. */
252b5132 830
b34976b6 831static bfd_boolean
55fd94b0
AM		 832elf_i386_check_relocs (bfd *abfd,
833 struct bfd_link_info *info,
834 asection *sec,
835 const Elf_Internal_Rela *relocs)
252b5132 836{
6725bdbf 837 struct elf_i386_link_hash_table *htab;
252b5132
RH		 838 Elf_Internal_Shdr *symtab_hdr;
839 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 840 const Elf_Internal_Rela *rel;
841 const Elf_Internal_Rela *rel_end;
252b5132
RH		 842 asection *sreloc;
843
1049f94e 844 if (info->relocatable)
b34976b6 845 return TRUE;
252b5132 846
6725bdbf 847 htab = elf_i386_hash_table (info);
252b5132
RH		 848 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
849 sym_hashes = elf_sym_hashes (abfd);
252b5132 850
252b5132
RH		 851 sreloc = NULL;
852
853 rel_end = relocs + sec->reloc_count;
854 for (rel = relocs; rel < rel_end; rel++)
855 {
13ae64f3 856 unsigned int r_type;
252b5132
RH		 857 unsigned long r_symndx;
858 struct elf_link_hash_entry *h;
859
860 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 861 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 862
d9bc7a44 863 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 864 {
d003868e
AM		 865 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
866 abfd,
8f615d07 867 r_symndx);
b34976b6 868 return FALSE;
f5f31454
L		 869 }
870
252b5132
RH		 871 if (r_symndx < symtab_hdr->sh_info)
872 h = NULL;
873 else
874 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
875
13ae64f3
JJ		 876 r_type = elf_i386_tls_transition (info, r_type, h == NULL);
877
878 switch (r_type)
252b5132 879 {
37e55690
JJ		 880 case R_386_TLS_LDM:
881 htab->tls_ldm_got.refcount += 1;
882 goto create_got;
883
884 case R_386_PLT32:
885 /* This symbol requires a procedure linkage table entry. We
886 actually build the entry in adjust_dynamic_symbol,
887 because this might be a case of linking PIC code which is
888 never referenced by a dynamic object, in which case we
889 don't need to generate a procedure linkage table entry
890 after all. */
891
892 /* If this is a local symbol, we resolve it directly without
893 creating a procedure linkage table entry. */
894 if (h == NULL)
895 continue;
896
f5385ebf 897 h->needs_plt = 1;
37e55690
JJ		 898 h->plt.refcount += 1;
899 break;
900
13ae64f3 901 case R_386_TLS_IE_32:
37e55690
JJ		 902 case R_386_TLS_IE:
903 case R_386_TLS_GOTIE:
13ae64f3
JJ		 904 if (info->shared)
905 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 906 /* Fall through */
907
252b5132 908 case R_386_GOT32:
13ae64f3 909 case R_386_TLS_GD:
252b5132 910 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 911 {
912 int tls_type, old_tls_type;
913
914 switch (r_type)
915 {
916 default:
917 case R_386_GOT32: tls_type = GOT_NORMAL; break;
918 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
37e55690
JJ		 919 case R_386_TLS_IE_32:
920 if (ELF32_R_TYPE (rel->r_info) == r_type)
921 tls_type = GOT_TLS_IE_NEG;
922 else
923 /* If this is a GD->IE transition, we may use either of
924 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
925 tls_type = GOT_TLS_IE;
926 break;
927 case R_386_TLS_IE:
928 case R_386_TLS_GOTIE:
929 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 930 }
931
932 if (h != NULL)
933 {
934 h->got.refcount += 1;
935 old_tls_type = elf_i386_hash_entry(h)->tls_type;
936 }
937 else
938 {
939 bfd_signed_vma *local_got_refcounts;
940
941 /* This is a global offset table entry for a local symbol. */
942 local_got_refcounts = elf_local_got_refcounts (abfd);
943 if (local_got_refcounts == NULL)
944 {
945 bfd_size_type size;
946
947 size = symtab_hdr->sh_info;
948 size *= (sizeof (bfd_signed_vma) + sizeof(char));
55fd94b0 949 local_got_refcounts = bfd_zalloc (abfd, size);
13ae64f3 950 if (local_got_refcounts == NULL)
b34976b6 951 return FALSE;
13ae64f3
JJ		 952 elf_local_got_refcounts (abfd) = local_got_refcounts;
953 elf_i386_local_got_tls_type (abfd)
954 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
955 }
956 local_got_refcounts[r_symndx] += 1;
957 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
958 }
959
37e55690
JJ		 960 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
961 tls_type |= old_tls_type;
13ae64f3
JJ		 962 /* If a TLS symbol is accessed using IE at least once,
963 there is no point to use dynamic model for it. */
37e55690
JJ		 964 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
965 && (old_tls_type != GOT_TLS_GD
966 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 967 {
37e55690
JJ		 968 if ((old_tls_type & GOT_TLS_IE) && tls_type == GOT_TLS_GD)
969 tls_type = old_tls_type;
13ae64f3
JJ		 970 else
971 {
972 (*_bfd_error_handler)
d003868e 973 (_("%B: `%s' accessed both as normal and "
55fd94b0 974 "thread local symbol"),
d003868e 975 abfd,
37e55690 976 h ? h->root.root.string : "<local>");
b34976b6 977 return FALSE;
13ae64f3
JJ		 978 }
979 }
980
981 if (old_tls_type != tls_type)
982 {
983 if (h != NULL)
984 elf_i386_hash_entry (h)->tls_type = tls_type;
985 else
986 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
987 }
988 }
0ac8d2ca
AM		 989 /* Fall through */
990
991 case R_386_GOTOFF:
992 case R_386_GOTPC:
13ae64f3 993 create_got:
0ac8d2ca
AM		 994 if (htab->sgot == NULL)
995 {
996 if (htab->elf.dynobj == NULL)
997 htab->elf.dynobj = abfd;
998 if (!create_got_section (htab->elf.dynobj, info))
b34976b6 999 return FALSE;
0ac8d2ca 1000 }
37e55690
JJ		 1001 if (r_type != R_386_TLS_IE)
1002 break;
1003 /* Fall through */
252b5132 1004
37e55690
JJ		 1005 case R_386_TLS_LE_32:
1006 case R_386_TLS_LE:
1007 if (!info->shared)
1008 break;
bffbf940 1009 info->flags |= DF_STATIC_TLS;
b34976b6 1010 /* Fall through */
252b5132
RH		 1011
1012 case R_386_32:
1013 case R_386_PC32:
12d0ee4a 1014 if (h != NULL && !info->shared)
6725bdbf 1015 {
12d0ee4a 1016 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1017 need a copy reloc. We can't check reliably at this
1018 stage whether the section is read-only, as input
1019 sections have not yet been mapped to output sections.
1020 Tentatively set the flag for now, and correct in
1021 adjust_dynamic_symbol. */
f5385ebf 1022 h->non_got_ref = 1;
12d0ee4a
AM		 1023
1024 /* We may need a .plt entry if the function this reloc
1025 refers to is in a shared lib. */
51b64d56 1026 h->plt.refcount += 1;
c6585bbb 1027 if (r_type != R_386_PC32)
f5385ebf 1028 h->pointer_equality_needed = 1;
6725bdbf 1029 }
7843f00e 1030
252b5132 1031 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1032 against a global symbol, or a non PC relative reloc
1033 against a local symbol, then we need to copy the reloc
1034 into the shared library. However, if we are linking with
1035 -Bsymbolic, we do not need to copy a reloc against a
1036 global symbol which is defined in an object we are
1037 including in the link (i.e., DEF_REGULAR is set). At
1038 this point we have not seen all the input files, so it is
1039 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1040 later (it is never cleared). In case of a weak definition,
1041 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1042 a shared library. We account for that possibility below by
1f655a09
L		 1043 storing information in the relocs_copied field of the hash
1044 table entry. A similar situation occurs when creating
1045 shared libraries and symbol visibility changes render the
12d0ee4a 1046 symbol local.
56882138 1047
12d0ee4a
AM		 1048 If on the other hand, we are creating an executable, we
1049 may need to keep relocations for symbols satisfied by a
1050 dynamic library if we manage to avoid copy relocs for the
1051 symbol. */
1052 if ((info->shared
1053 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1054 && (r_type != R_386_PC32
12d0ee4a
AM		 1055 || (h != NULL
1056 && (! info->symbolic
1057 || h->root.type == bfd_link_hash_defweak
f5385ebf 1058 || !h->def_regular))))
a23b6845
AM		 1059 || (ELIMINATE_COPY_RELOCS
1060 && !info->shared
12d0ee4a
AM		 1061 && (sec->flags & SEC_ALLOC) != 0
1062 && h != NULL
12d0ee4a 1063 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1064 || !h->def_regular)))
252b5132 1065 {
ec338859
AM		 1066 struct elf_i386_dyn_relocs *p;
1067 struct elf_i386_dyn_relocs **head;
1068
12d0ee4a
AM		 1069 /* We must copy these reloc types into the output file.
1070 Create a reloc section in dynobj and make room for
1071 this reloc. */
252b5132
RH		 1072 if (sreloc == NULL)
1073 {
1074 const char *name;
0ac8d2ca 1075 bfd *dynobj;
e92d460e
AM		 1076 unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
1077 unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name;
252b5132 1078
e92d460e 1079 name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
252b5132 1080 if (name == NULL)
b34976b6 1081 return FALSE;
252b5132 1082
c8492176
L		 1083 if (strncmp (name, ".rel", 4) != 0
1084 || strcmp (bfd_get_section_name (abfd, sec),
1085 name + 4) != 0)
1086 {
0c715baa 1087 (*_bfd_error_handler)
d003868e
AM		 1088 (_("%B: bad relocation section name `%s\'"),
1089 abfd, name);
f5f31454 1090 }
252b5132 1091
0ac8d2ca
AM		 1092 if (htab->elf.dynobj == NULL)
1093 htab->elf.dynobj = abfd;
1094
1095 dynobj = htab->elf.dynobj;
252b5132
RH		 1096 sreloc = bfd_get_section_by_name (dynobj, name);
1097 if (sreloc == NULL)
1098 {
1099 flagword flags;
1100
1101 sreloc = bfd_make_section (dynobj, name);
1102 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1103 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1104 if ((sec->flags & SEC_ALLOC) != 0)
1105 flags |= SEC_ALLOC | SEC_LOAD;
1106 if (sreloc == NULL
1107 || ! bfd_set_section_flags (dynobj, sreloc, flags)
1108 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
b34976b6 1109 return FALSE;
252b5132 1110 }
0c715baa 1111 elf_section_data (sec)->sreloc = sreloc;
252b5132
RH		 1112 }
1113
0c715baa
AM		 1114 /* If this is a global symbol, we count the number of
1115 relocations we need for this symbol. */
1116 if (h != NULL)
252b5132 1117 {
ec338859 1118 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
0c715baa
AM		 1119 }
1120 else
1121 {
ec338859
AM		 1122 /* Track dynamic relocs needed for local syms too.
1123 We really need local syms available to do this
1124 easily. Oh well. */
1125
1126 asection *s;
1127 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1128 sec, r_symndx);
1129 if (s == NULL)
b34976b6 1130 return FALSE;
ec338859
AM		 1131
1132 head = ((struct elf_i386_dyn_relocs **)
1133 &elf_section_data (s)->local_dynrel);
1134 }
1135
1136 p = *head;
1137 if (p == NULL || p->sec != sec)
1138 {
1139 bfd_size_type amt = sizeof *p;
55fd94b0 1140 p = bfd_alloc (htab->elf.dynobj, amt);
ec338859 1141 if (p == NULL)
b34976b6 1142 return FALSE;
ec338859
AM		 1143 p->next = *head;
1144 *head = p;
1145 p->sec = sec;
1146 p->count = 0;
1147 p->pc_count = 0;
252b5132 1148 }
ec338859
AM		 1149
1150 p->count += 1;
13ae64f3 1151 if (r_type == R_386_PC32)
ec338859 1152 p->pc_count += 1;
252b5132 1153 }
252b5132
RH		 1154 break;
1155
1156 /* This relocation describes the C++ object vtable hierarchy.
1157 Reconstruct it for later use during GC. */
1158 case R_386_GNU_VTINHERIT:
c152c796 1159 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1160 return FALSE;
252b5132
RH		 1161 break;
1162
1163 /* This relocation describes which C++ vtable entries are actually
1164 used. Record for later use during GC. */
1165 case R_386_GNU_VTENTRY:
c152c796 1166 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
b34976b6 1167 return FALSE;
252b5132
RH		 1168 break;
1169
1170 default:
1171 break;
1172 }
1173 }
1174
b34976b6 1175 return TRUE;
252b5132
RH		 1176}
1177
1178/* Return the section that should be marked against GC for a given
1179 relocation. */
1180
1181static asection *
55fd94b0
AM		 1182elf_i386_gc_mark_hook (asection *sec,
1183 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1184 Elf_Internal_Rela *rel,
1185 struct elf_link_hash_entry *h,
1186 Elf_Internal_Sym *sym)
252b5132
RH		 1187{
1188 if (h != NULL)
1189 {
1190 switch (ELF32_R_TYPE (rel->r_info))
1191 {
1192 case R_386_GNU_VTINHERIT:
1193 case R_386_GNU_VTENTRY:
1194 break;
1195
1196 default:
1197 switch (h->root.type)
1198 {
1199 case bfd_link_hash_defined:
1200 case bfd_link_hash_defweak:
1201 return h->root.u.def.section;
1202
1203 case bfd_link_hash_common:
1204 return h->root.u.c.p->section;
1205
1206 default:
1207 break;
1208 }
1209 }
1210 }
1211 else
1e2f5b6e 1212 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
252b5132
RH		 1213
1214 return NULL;
1215}
1216
1217/* Update the got entry reference counts for the section being removed. */
1218
b34976b6 1219static bfd_boolean
55fd94b0
AM		 1220elf_i386_gc_sweep_hook (bfd *abfd,
1221 struct bfd_link_info *info,
1222 asection *sec,
1223 const Elf_Internal_Rela *relocs)
252b5132 1224{
dd5724d5
AM		 1225 Elf_Internal_Shdr *symtab_hdr;
1226 struct elf_link_hash_entry **sym_hashes;
1227 bfd_signed_vma *local_got_refcounts;
1228 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1229
ec338859 1230 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1231
6725bdbf
AM		 1232 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1233 sym_hashes = elf_sym_hashes (abfd);
1234 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1235
1236 relend = relocs + sec->reloc_count;
1237 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1238 {
1239 unsigned long r_symndx;
1240 unsigned int r_type;
1241 struct elf_link_hash_entry *h = NULL;
37e55690 1242
26e41594
AM		 1243 r_symndx = ELF32_R_SYM (rel->r_info);
1244 if (r_symndx >= symtab_hdr->sh_info)
1245 {
1246 struct elf_i386_link_hash_entry *eh;
1247 struct elf_i386_dyn_relocs **pp;
1248 struct elf_i386_dyn_relocs *p;
dd5724d5 1249
26e41594 1250 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1251 while (h->root.type == bfd_link_hash_indirect
1252 || h->root.type == bfd_link_hash_warning)
1253 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1254 eh = (struct elf_i386_link_hash_entry *) h;
0c715baa 1255
26e41594
AM		 1256 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1257 if (p->sec == sec)
1258 {
1259 /* Everything must go for SEC. */
1260 *pp = p->next;
1261 break;
1262 }
1263 }
0c715baa 1264
26e41594
AM		 1265 r_type = ELF32_R_TYPE (rel->r_info);
1266 r_type = elf_i386_tls_transition (info, r_type, h != NULL);
1267 switch (r_type)
1268 {
1269 case R_386_TLS_LDM:
1270 if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0)
1271 elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1;
1272 break;
0c715baa 1273
26e41594
AM		 1274 case R_386_TLS_GD:
1275 case R_386_TLS_IE_32:
1276 case R_386_TLS_IE:
1277 case R_386_TLS_GOTIE:
1278 case R_386_GOT32:
1279 if (h != NULL)
1280 {
1281 if (h->got.refcount > 0)
1282 h->got.refcount -= 1;
1283 }
1284 else if (local_got_refcounts != NULL)
1285 {
1286 if (local_got_refcounts[r_symndx] > 0)
1287 local_got_refcounts[r_symndx] -= 1;
1288 }
1289 break;
0c715baa 1290
26e41594
AM		 1291 case R_386_32:
1292 case R_386_PC32:
1293 if (info->shared)
1294 break;
1295 /* Fall through */
6725bdbf 1296
26e41594
AM		 1297 case R_386_PLT32:
1298 if (h != NULL)
1299 {
1300 if (h->plt.refcount > 0)
1301 h->plt.refcount -= 1;
1302 }
1303 break;
dd5724d5 1304
26e41594
AM		 1305 default:
1306 break;
1307 }
1308 }
252b5132 1309
b34976b6 1310 return TRUE;
252b5132
RH		 1311}
1312
1313/* Adjust a symbol defined by a dynamic object and referenced by a
1314 regular object. The current definition is in some section of the
1315 dynamic object, but we're not including those sections. We have to
1316 change the definition to something the rest of the link can
1317 understand. */
1318
b34976b6 1319static bfd_boolean
55fd94b0
AM		 1320elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
1321 struct elf_link_hash_entry *h)
252b5132 1322{
6725bdbf 1323 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1324 asection *s;
1325 unsigned int power_of_two;
1326
252b5132
RH		 1327 /* If this is a function, put it in the procedure linkage table. We
1328 will fill in the contents of the procedure linkage table later,
1329 when we know the address of the .got section. */
1330 if (h->type == STT_FUNC
f5385ebf 1331 || h->needs_plt)
252b5132 1332 {
6725bdbf 1333 if (h->plt.refcount <= 0
9c7a29a3
AM		 1334 || SYMBOL_CALLS_LOCAL (info, h)
1335 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1336 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 1337 {
1338 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 1339 file, but the symbol was never referred to by a dynamic
1340 object, or if all references were garbage collected. In
1341 such a case, we don't actually need to build a procedure
1342 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 1343 h->plt.offset = (bfd_vma) -1;
f5385ebf 1344 h->needs_plt = 0;
252b5132
RH		 1345 }
1346
b34976b6 1347 return TRUE;
252b5132 1348 }
6725bdbf
AM		 1349 else
1350 /* It's possible that we incorrectly decided a .plt reloc was
1351 needed for an R_386_PC32 reloc to a non-function sym in
1352 check_relocs. We can't decide accurately between function and
1353 non-function syms in check-relocs; Objects loaded later in
1354 the link may change h->type. So fix it now. */
bbd7ec4a 1355 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 1356
1357 /* If this is a weak symbol, and there is a real definition, the
1358 processor independent code will have arranged for us to see the
1359 real definition first, and we can just use the same value. */
f6e332e6 1360 if (h->u.weakdef != NULL)
252b5132 1361 {
f6e332e6
AM		 1362 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1363 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1364 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1365 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 1366 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1367 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1368 return TRUE;
252b5132
RH		 1369 }
1370
1371 /* This is a reference to a symbol defined by a dynamic object which
1372 is not a function. */
1373
1374 /* If we are creating a shared library, we must presume that the
1375 only references to the symbol are via the global offset table.
1376 For such cases we need not do anything here; the relocations will
1377 be handled correctly by relocate_section. */
1378 if (info->shared)
b34976b6 1379 return TRUE;
252b5132 1380
7843f00e
ILT		 1381 /* If there are no references to this symbol that do not use the
1382 GOT, we don't need to generate a copy reloc. */
f5385ebf 1383 if (!h->non_got_ref)
b34976b6 1384 return TRUE;
7843f00e 1385
8bd621d8
AM		 1386 /* If -z nocopyreloc was given, we won't generate them either. */
1387 if (info->nocopyreloc)
1388 {
f5385ebf 1389 h->non_got_ref = 0;
b34976b6 1390 return TRUE;
8bd621d8
AM		 1391 }
1392
a23b6845 1393 if (ELIMINATE_COPY_RELOCS)
ebe50bae 1394 {
a23b6845
AM		 1395 struct elf_i386_link_hash_entry * eh;
1396 struct elf_i386_dyn_relocs *p;
ebe50bae 1397
a23b6845
AM		 1398 eh = (struct elf_i386_link_hash_entry *) h;
1399 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1400 {
1401 s = p->sec->output_section;
1402 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1403 break;
1404 }
1405
1406 /* If we didn't find any dynamic relocs in read-only sections, then
1407 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1408 if (p == NULL)
1409 {
f5385ebf 1410 h->non_got_ref = 0;
a23b6845
AM		 1411 return TRUE;
1412 }
ebe50bae
AM		 1413 }
1414
252b5132
RH		 1415 /* We must allocate the symbol in our .dynbss section, which will
1416 become part of the .bss section of the executable. There will be
1417 an entry for this symbol in the .dynsym section. The dynamic
1418 object will contain position independent code, so all references
1419 from the dynamic object to this symbol will go through the global
1420 offset table. The dynamic linker will use the .dynsym entry to
1421 determine the address it must put in the global offset table, so
1422 both the dynamic object and the regular object will refer to the
1423 same memory location for the variable. */
1424
0ac8d2ca 1425 htab = elf_i386_hash_table (info);
252b5132
RH		 1426
1427 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
1428 copy the initial value out of the dynamic object and into the
0ac8d2ca 1429 runtime process image. */
252b5132
RH		 1430 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1431 {
eea6121a 1432 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 1433 h->needs_copy = 1;
252b5132
RH		 1434 }
1435
1436 /* We need to figure out the alignment required for this symbol. I
1437 have no idea how ELF linkers handle this. */
1438 power_of_two = bfd_log2 (h->size);
1439 if (power_of_two > 3)
1440 power_of_two = 3;
1441
1442 /* Apply the required alignment. */
0ac8d2ca 1443 s = htab->sdynbss;
eea6121a 1444 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
0ac8d2ca 1445 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
252b5132 1446 {
0ac8d2ca 1447 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
b34976b6 1448 return FALSE;
252b5132
RH		 1449 }
1450
1451 /* Define the symbol as being at this point in the section. */
1452 h->root.u.def.section = s;
eea6121a 1453 h->root.u.def.value = s->size;
252b5132
RH		 1454
1455 /* Increment the section size to make room for the symbol. */
eea6121a 1456 s->size += h->size;
252b5132 1457
b34976b6 1458 return TRUE;
252b5132
RH		 1459}
1460
6725bdbf 1461/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 1462 dynamic relocs. */
6725bdbf 1463
b34976b6 1464static bfd_boolean
55fd94b0 1465allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 1466{
1467 struct bfd_link_info *info;
1468 struct elf_i386_link_hash_table *htab;
5a15f56f 1469 struct elf_i386_link_hash_entry *eh;
0c715baa 1470 struct elf_i386_dyn_relocs *p;
6725bdbf 1471
e92d460e 1472 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1473 return TRUE;
6725bdbf 1474
e92d460e
AM		 1475 if (h->root.type == bfd_link_hash_warning)
1476 /* When warning symbols are created, they **replace** the "real"
1477 entry in the hash table, thus we never get to see the real
1478 symbol in a hash traversal. So look at it now. */
1479 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1480
6725bdbf
AM		 1481 info = (struct bfd_link_info *) inf;
1482 htab = elf_i386_hash_table (info);
1483
ebe50bae 1484 if (htab->elf.dynamic_sections_created
9c7a29a3 1485 && h->plt.refcount > 0)
6725bdbf 1486 {
5a15f56f
AM		 1487 /* Make sure this symbol is output as a dynamic symbol.
1488 Undefined weak syms won't yet be marked as dynamic. */
1489 if (h->dynindx == -1
f5385ebf 1490 && !h->forced_local)
5a15f56f 1491 {
c152c796 1492 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1493 return FALSE;
5a15f56f
AM		 1494 }
1495
4e795f50
AM		 1496 if (info->shared
1497 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 1498 {
0ac8d2ca 1499 asection *s = htab->splt;
6725bdbf 1500
ced53ee5
AM		 1501 /* If this is the first .plt entry, make room for the special
1502 first entry. */
eea6121a
AM		 1503 if (s->size == 0)
1504 s->size += PLT_ENTRY_SIZE;
6725bdbf 1505
eea6121a 1506 h->plt.offset = s->size;
6725bdbf 1507
ced53ee5
AM		 1508 /* If this symbol is not defined in a regular file, and we are
1509 not generating a shared library, then set the symbol to this
1510 location in the .plt. This is required to make function
1511 pointers compare as equal between the normal executable and
1512 the shared library. */
1513 if (! info->shared
f5385ebf 1514 && !h->def_regular)
ced53ee5
AM		 1515 {
1516 h->root.u.def.section = s;
1517 h->root.u.def.value = h->plt.offset;
1518 }
6725bdbf 1519
ced53ee5 1520 /* Make room for this entry. */
eea6121a 1521 s->size += PLT_ENTRY_SIZE;
6725bdbf 1522
ced53ee5
AM		 1523 /* We also need to make an entry in the .got.plt section, which
1524 will be placed in the .got section by the linker script. */
eea6121a 1525 htab->sgotplt->size += 4;
6725bdbf 1526
6725bdbf 1527 /* We also need to make an entry in the .rel.plt section. */
eea6121a 1528 htab->srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf 1529 }
ced53ee5
AM		 1530 else
1531 {
51b64d56 1532 h->plt.offset = (bfd_vma) -1;
f5385ebf 1533 h->needs_plt = 0;
ced53ee5 1534 }
6725bdbf
AM		 1535 }
1536 else
1537 {
51b64d56 1538 h->plt.offset = (bfd_vma) -1;
f5385ebf 1539 h->needs_plt = 0;
6725bdbf
AM		 1540 }
1541
37e55690 1542 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 1543 make it a R_386_TLS_LE_32 requiring no TLS entry. */
1544 if (h->got.refcount > 0
1545 && !info->shared
1546 && h->dynindx == -1
37e55690 1547 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 1548 h->got.offset = (bfd_vma) -1;
13ae64f3 1549 else if (h->got.refcount > 0)
6725bdbf 1550 {
0ac8d2ca 1551 asection *s;
b34976b6 1552 bfd_boolean dyn;
13ae64f3 1553 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 1554
5a15f56f
AM		 1555 /* Make sure this symbol is output as a dynamic symbol.
1556 Undefined weak syms won't yet be marked as dynamic. */
1557 if (h->dynindx == -1
f5385ebf 1558 && !h->forced_local)
5a15f56f 1559 {
c152c796 1560 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1561 return FALSE;
5a15f56f
AM		 1562 }
1563
6725bdbf 1564 s = htab->sgot;
eea6121a
AM		 1565 h->got.offset = s->size;
1566 s->size += 4;
13ae64f3 1567 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
37e55690 1568 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE_BOTH)
eea6121a 1569 s->size += 4;
ebe50bae 1570 dyn = htab->elf.dynamic_sections_created;
13ae64f3 1571 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 1572 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
1573 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
1574 need two), R_386_TLS_GD needs one if local symbol and two if
1575 global. */
1576 if (tls_type == GOT_TLS_IE_BOTH)
eea6121a 1577 htab->srelgot->size += 2 * sizeof (Elf32_External_Rel);
37e55690
JJ		 1578 else if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1579 || (tls_type & GOT_TLS_IE))
eea6121a 1580 htab->srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3 1581 else if (tls_type == GOT_TLS_GD)
eea6121a 1582 htab->srelgot->size += 2 * sizeof (Elf32_External_Rel);
ef5aade5
L		 1583 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1584 || h->root.type != bfd_link_hash_undefweak)
1585 && (info->shared
1586 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
eea6121a 1587 htab->srelgot->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 1588 }
1589 else
51b64d56 1590 h->got.offset = (bfd_vma) -1;
6725bdbf 1591
5a15f56f
AM		 1592 eh = (struct elf_i386_link_hash_entry *) h;
1593 if (eh->dyn_relocs == NULL)
b34976b6 1594 return TRUE;
5a15f56f 1595
0c715baa
AM		 1596 /* In the shared -Bsymbolic case, discard space allocated for
1597 dynamic pc-relative relocs against symbols which turn out to be
1598 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 1599 space for pc-relative relocs that have become local due to symbol
1600 visibility changes. */
0c715baa
AM		 1601
1602 if (info->shared)
5a15f56f 1603 {
09695f56
AM		 1604 /* The only reloc that uses pc_count is R_386_PC32, which will
1605 appear on a call or on something like ".long foo - .". We
1606 want calls to protected symbols to resolve directly to the
1607 function rather than going via the plt. If people want
1608 function pointer comparisons to work as expected then they
1609 should avoid writing assembly like ".long foo - .". */
1610 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 1611 {
0c715baa
AM		 1612 struct elf_i386_dyn_relocs **pp;
1613
1614 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1615 {
1616 p->count -= p->pc_count;
1617 p->pc_count = 0;
1618 if (p->count == 0)
1619 *pp = p->next;
1620 else
1621 pp = &p->next;
1622 }
5a15f56f 1623 }
4e795f50
AM		 1624
1625 /* Also discard relocs on undefined weak syms with non-default
1626 visibility. */
1627 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1628 && h->root.type == bfd_link_hash_undefweak)
1629 eh->dyn_relocs = NULL;
0c715baa 1630 }
a23b6845 1631 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 1632 {
1633 /* For the non-shared case, discard space for relocs against
1634 symbols which turn out to need copy relocs or are not
1635 dynamic. */
1636
f5385ebf
AM		 1637 if (!h->non_got_ref
1638 && ((h->def_dynamic
1639 && !h->def_regular)
ebe50bae 1640 || (htab->elf.dynamic_sections_created
0c715baa
AM		 1641 && (h->root.type == bfd_link_hash_undefweak
1642 || h->root.type == bfd_link_hash_undefined))))
1643 {
1644 /* Make sure this symbol is output as a dynamic symbol.
1645 Undefined weak syms won't yet be marked as dynamic. */
1646 if (h->dynindx == -1
f5385ebf 1647 && !h->forced_local)
0c715baa 1648 {
c152c796 1649 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1650 return FALSE;
0c715baa 1651 }
5a15f56f 1652
0c715baa
AM		 1653 /* If that succeeded, we know we'll be keeping all the
1654 relocs. */
1655 if (h->dynindx != -1)
1656 goto keep;
1657 }
1658
1659 eh->dyn_relocs = NULL;
1660
ec338859 1661 keep: ;
5a15f56f
AM		 1662 }
1663
0c715baa
AM		 1664 /* Finally, allocate space. */
1665 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 1666 {
0c715baa 1667 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1668 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 1669 }
1670
b34976b6 1671 return TRUE;
6725bdbf
AM		 1672}
1673
0c715baa
AM		 1674/* Find any dynamic relocs that apply to read-only sections. */
1675
b34976b6 1676static bfd_boolean
55fd94b0 1677readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 1678{
1679 struct elf_i386_link_hash_entry *eh;
1680 struct elf_i386_dyn_relocs *p;
1681
e92d460e
AM		 1682 if (h->root.type == bfd_link_hash_warning)
1683 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1684
0c715baa
AM		 1685 eh = (struct elf_i386_link_hash_entry *) h;
1686 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1687 {
1688 asection *s = p->sec->output_section;
1689
1690 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1691 {
1692 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1693
1694 info->flags |= DF_TEXTREL;
1695
1696 /* Not an error, just cut short the traversal. */
b34976b6 1697 return FALSE;
0c715baa
AM		 1698 }
1699 }
b34976b6 1700 return TRUE;
0c715baa
AM		 1701}
1702
252b5132
RH		 1703/* Set the sizes of the dynamic sections. */
1704
b34976b6 1705static bfd_boolean
55fd94b0
AM		 1706elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1707 struct bfd_link_info *info)
252b5132 1708{
6725bdbf 1709 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1710 bfd *dynobj;
1711 asection *s;
b34976b6 1712 bfd_boolean relocs;
0c715baa 1713 bfd *ibfd;
252b5132 1714
6725bdbf 1715 htab = elf_i386_hash_table (info);
ebe50bae 1716 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 1717 if (dynobj == NULL)
1718 abort ();
252b5132 1719
ebe50bae 1720 if (htab->elf.dynamic_sections_created)
252b5132
RH		 1721 {
1722 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 1723 if (info->executable)
252b5132
RH		 1724 {
1725 s = bfd_get_section_by_name (dynobj, ".interp");
ffb2e45b
AM		 1726 if (s == NULL)
1727 abort ();
eea6121a 1728 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 1729 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1730 }
161d71a6 1731 }
6725bdbf 1732
0c715baa
AM		 1733 /* Set up .got offsets for local syms, and space for local dynamic
1734 relocs. */
1735 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 1736 {
1737 bfd_signed_vma *local_got;
1738 bfd_signed_vma *end_local_got;
13ae64f3 1739 char *local_tls_type;
161d71a6
L		 1740 bfd_size_type locsymcount;
1741 Elf_Internal_Shdr *symtab_hdr;
1742 asection *srel;
6725bdbf 1743
0c715baa 1744 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
161d71a6 1745 continue;
6725bdbf 1746
0c715baa
AM		 1747 for (s = ibfd->sections; s != NULL; s = s->next)
1748 {
ec338859 1749 struct elf_i386_dyn_relocs *p;
0c715baa 1750
ec338859
AM		 1751 for (p = *((struct elf_i386_dyn_relocs **)
1752 &elf_section_data (s)->local_dynrel);
1753 p != NULL;
1754 p = p->next)
0c715baa 1755 {
ec338859
AM		 1756 if (!bfd_is_abs_section (p->sec)
1757 && bfd_is_abs_section (p->sec->output_section))
1758 {
1759 /* Input section has been discarded, either because
1760 it is a copy of a linkonce section or due to
1761 linker script /DISCARD/, so we'll be discarding
1762 the relocs too. */
1763 }
248866a8 1764 else if (p->count != 0)
ec338859
AM		 1765 {
1766 srel = elf_section_data (p->sec)->sreloc;
eea6121a 1767 srel->size += p->count * sizeof (Elf32_External_Rel);
248866a8
AM		 1768 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1769 info->flags |= DF_TEXTREL;
ec338859 1770 }
0c715baa
AM		 1771 }
1772 }
1773
1774 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 1775 if (!local_got)
1776 continue;
6725bdbf 1777
0c715baa 1778 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
161d71a6
L		 1779 locsymcount = symtab_hdr->sh_info;
1780 end_local_got = local_got + locsymcount;
13ae64f3 1781 local_tls_type = elf_i386_local_got_tls_type (ibfd);
161d71a6
L		 1782 s = htab->sgot;
1783 srel = htab->srelgot;
13ae64f3 1784 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
161d71a6
L		 1785 {
1786 if (*local_got > 0)
6725bdbf 1787 {
eea6121a
AM		 1788 *local_got = s->size;
1789 s->size += 4;
37e55690
JJ		 1790 if (*local_tls_type == GOT_TLS_GD
1791 || *local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 1792 s->size += 4;
13ae64f3
JJ		 1793 if (info->shared
1794 || *local_tls_type == GOT_TLS_GD
37e55690
JJ		 1795 || (*local_tls_type & GOT_TLS_IE))
1796 {
1797 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 1798 srel->size += 2 * sizeof (Elf32_External_Rel);
37e55690 1799 else
eea6121a 1800 srel->size += sizeof (Elf32_External_Rel);
37e55690 1801 }
6725bdbf 1802 }
161d71a6
L		 1803 else
1804 *local_got = (bfd_vma) -1;
6725bdbf 1805 }
252b5132 1806 }
6725bdbf 1807
13ae64f3
JJ		 1808 if (htab->tls_ldm_got.refcount > 0)
1809 {
1810 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
1811 relocs. */
eea6121a
AM		 1812 htab->tls_ldm_got.offset = htab->sgot->size;
1813 htab->sgot->size += 8;
1814 htab->srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 1815 }
1816 else
1817 htab->tls_ldm_got.offset = -1;
1818
0c715baa
AM		 1819 /* Allocate global sym .plt and .got entries, and space for global
1820 sym dynamic relocs. */
ebe50bae 1821 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
252b5132 1822
5a15f56f
AM		 1823 /* We now have determined the sizes of the various dynamic sections.
1824 Allocate memory for them. */
b34976b6 1825 relocs = FALSE;
252b5132
RH		 1826 for (s = dynobj->sections; s != NULL; s = s->next)
1827 {
252b5132
RH		 1828 if ((s->flags & SEC_LINKER_CREATED) == 0)
1829 continue;
1830
6725bdbf
AM		 1831 if (s == htab->splt
1832 || s == htab->sgot
1833 || s == htab->sgotplt)
252b5132 1834 {
6725bdbf
AM		 1835 /* Strip this section if we don't need it; see the
1836 comment below. */
252b5132 1837 }
6725bdbf 1838 else if (strncmp (bfd_get_section_name (dynobj, s), ".rel", 4) == 0)
252b5132 1839 {
eea6121a 1840 if (s->size != 0 && s != htab->srelplt)
b34976b6 1841 relocs = TRUE;
252b5132 1842
0ac8d2ca
AM		 1843 /* We use the reloc_count field as a counter if we need
1844 to copy relocs into the output file. */
1845 s->reloc_count = 0;
252b5132 1846 }
6725bdbf 1847 else
252b5132
RH		 1848 {
1849 /* It's not one of our sections, so don't allocate space. */
1850 continue;
1851 }
1852
eea6121a 1853 if (s->size == 0)
252b5132 1854 {
0ac8d2ca
AM		 1855 /* If we don't need this section, strip it from the
1856 output file. This is mostly to handle .rel.bss and
1857 .rel.plt. We must create both sections in
1858 create_dynamic_sections, because they must be created
1859 before the linker maps input sections to output
1860 sections. The linker does that before
1861 adjust_dynamic_symbol is called, and it is that
1862 function which decides whether anything needs to go
1863 into these sections. */
1864
8423293d 1865 s->flags |= SEC_EXCLUDE;
252b5132
RH		 1866 continue;
1867 }
1868
f69da49f
AM		 1869 /* Allocate memory for the section contents. We use bfd_zalloc
1870 here in case unused entries are not reclaimed before the
1871 section's contents are written out. This should not happen,
1872 but this way if it does, we get a R_386_NONE reloc instead
1873 of garbage. */
eea6121a 1874 s->contents = bfd_zalloc (dynobj, s->size);
6725bdbf 1875 if (s->contents == NULL)
b34976b6 1876 return FALSE;
252b5132
RH		 1877 }
1878
ebe50bae 1879 if (htab->elf.dynamic_sections_created)
252b5132
RH		 1880 {
1881 /* Add some entries to the .dynamic section. We fill in the
1882 values later, in elf_i386_finish_dynamic_sections, but we
1883 must add the entries now so that we get the correct size for
1884 the .dynamic section. The DT_DEBUG entry is filled in by the
1885 dynamic linker and used by the debugger. */
dc810e39 1886#define add_dynamic_entry(TAG, VAL) \
5a580b3a 1887 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 1888
36af4a4e 1889 if (info->executable)
252b5132 1890 {
dc810e39 1891 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 1892 return FALSE;
252b5132
RH		 1893 }
1894
eea6121a 1895 if (htab->splt->size != 0)
252b5132 1896 {
dc810e39
AM		 1897 if (!add_dynamic_entry (DT_PLTGOT, 0)
1898 || !add_dynamic_entry (DT_PLTRELSZ, 0)
1899 || !add_dynamic_entry (DT_PLTREL, DT_REL)
1900 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 1901 return FALSE;
252b5132
RH		 1902 }
1903
1904 if (relocs)
1905 {
dc810e39
AM		 1906 if (!add_dynamic_entry (DT_REL, 0)
1907 || !add_dynamic_entry (DT_RELSZ, 0)
1908 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 1909 return FALSE;
252b5132 1910
0c715baa
AM		 1911 /* If any dynamic relocs apply to a read-only section,
1912 then we need a DT_TEXTREL entry. */
248866a8
AM		 1913 if ((info->flags & DF_TEXTREL) == 0)
1914 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
1915 (PTR) info);
0c715baa
AM		 1916
1917 if ((info->flags & DF_TEXTREL) != 0)
1918 {
1919 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 1920 return FALSE;
0c715baa 1921 }
252b5132
RH		 1922 }
1923 }
dc810e39 1924#undef add_dynamic_entry
252b5132 1925
b34976b6 1926 return TRUE;
252b5132
RH		 1927}
1928
38701953
AM		 1929/* Set the correct type for an x86 ELF section. We do this by the
1930 section name, which is a hack, but ought to work. */
1931
b34976b6 1932static bfd_boolean
55fd94b0
AM		 1933elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1934 Elf_Internal_Shdr *hdr,
1935 asection *sec)
38701953
AM		 1936{
1937 register const char *name;
1938
1939 name = bfd_get_section_name (abfd, sec);
1940
1941 /* This is an ugly, but unfortunately necessary hack that is
1942 needed when producing EFI binaries on x86. It tells
1943 elf.c:elf_fake_sections() not to consider ".reloc" as a section
1944 containing ELF relocation info. We need this hack in order to
1945 be able to generate ELF binaries that can be translated into
1946 EFI applications (which are essentially COFF objects). Those
1947 files contain a COFF ".reloc" section inside an ELFNN object,
1948 which would normally cause BFD to segfault because it would
1949 attempt to interpret this section as containing relocation
1950 entries for section "oc". With this hack enabled, ".reloc"
1951 will be treated as a normal data section, which will avoid the
1952 segfault. However, you won't be able to create an ELFNN binary
1953 with a section named "oc" that needs relocations, but that's
1954 the kind of ugly side-effects you get when detecting section
1955 types based on their names... In practice, this limitation is
1956 unlikely to bite. */
1957 if (strcmp (name, ".reloc") == 0)
1958 hdr->sh_type = SHT_PROGBITS;
1959
b34976b6 1960 return TRUE;
38701953
AM		 1961}
1962
13ae64f3
JJ		 1963/* Return the base VMA address which should be subtracted from real addresses
1964 when resolving @dtpoff relocation.
1965 This is PT_TLS segment p_vaddr. */
1966
1967static bfd_vma
55fd94b0 1968dtpoff_base (struct bfd_link_info *info)
13ae64f3 1969{
e1918d23
AM		 1970 /* If tls_sec is NULL, we should have signalled an error already. */
1971 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 1972 return 0;
e1918d23 1973 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 1974}
1975
1976/* Return the relocation value for @tpoff relocation
1977 if STT_TLS virtual address is ADDRESS. */
1978
1979static bfd_vma
55fd94b0 1980tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 1981{
e1918d23 1982 struct elf_link_hash_table *htab = elf_hash_table (info);
13ae64f3 1983
e1918d23
AM		 1984 /* If tls_sec is NULL, we should have signalled an error already. */
1985 if (htab->tls_sec == NULL)
6a30718d 1986 return 0;
e1918d23 1987 return htab->tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 1988}
1989
252b5132
RH		 1990/* Relocate an i386 ELF section. */
1991
b34976b6 1992static bfd_boolean
55fd94b0
AM		 1993elf_i386_relocate_section (bfd *output_bfd,
1994 struct bfd_link_info *info,
1995 bfd *input_bfd,
1996 asection *input_section,
1997 bfd_byte *contents,
1998 Elf_Internal_Rela *relocs,
1999 Elf_Internal_Sym *local_syms,
2000 asection **local_sections)
252b5132 2001{
6725bdbf 2002 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2003 Elf_Internal_Shdr *symtab_hdr;
2004 struct elf_link_hash_entry **sym_hashes;
2005 bfd_vma *local_got_offsets;
252b5132
RH		 2006 Elf_Internal_Rela *rel;
2007 Elf_Internal_Rela *relend;
2008
6725bdbf 2009 htab = elf_i386_hash_table (info);
252b5132
RH		 2010 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2011 sym_hashes = elf_sym_hashes (input_bfd);
2012 local_got_offsets = elf_local_got_offsets (input_bfd);
2013
252b5132
RH		 2014 rel = relocs;
2015 relend = relocs + input_section->reloc_count;
2016 for (; rel < relend; rel++)
2017 {
13ae64f3 2018 unsigned int r_type;
252b5132
RH		 2019 reloc_howto_type *howto;
2020 unsigned long r_symndx;
2021 struct elf_link_hash_entry *h;
2022 Elf_Internal_Sym *sym;
2023 asection *sec;
ffb2e45b 2024 bfd_vma off;
252b5132 2025 bfd_vma relocation;
b34976b6 2026 bfd_boolean unresolved_reloc;
252b5132 2027 bfd_reloc_status_type r;
1b452ec6 2028 unsigned int indx;
13ae64f3 2029 int tls_type;
252b5132
RH		 2030
2031 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 2032 if (r_type == R_386_GNU_VTINHERIT
2033 || r_type == R_386_GNU_VTENTRY)
252b5132 2034 continue;
dc47f327 2035
55fd94b0 2036 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 2037 && ((indx = r_type - R_386_ext_offset) - R_386_standard
2038 >= R_386_ext - R_386_standard)
2039 && ((indx = r_type - R_386_tls_offset) - R_386_ext
2040 >= R_386_tls - R_386_ext))
252b5132 2041 {
6ba842b6 2042 (*_bfd_error_handler)
d003868e
AM		 2043 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
2044 input_bfd, input_section, r_type);
252b5132 2045 bfd_set_error (bfd_error_bad_value);
b34976b6 2046 return FALSE;
252b5132 2047 }
1b452ec6 2048 howto = elf_howto_table + indx;
252b5132
RH		 2049
2050 r_symndx = ELF32_R_SYM (rel->r_info);
2051
1049f94e 2052 if (info->relocatable)
252b5132 2053 {
4a335f3d 2054 bfd_vma val;
4a335f3d
AM		 2055 bfd_byte *where;
2056
0ac8d2ca 2057 /* This is a relocatable link. We don't have to change
252b5132
RH		 2058 anything, unless the reloc is against a section symbol,
2059 in which case we have to adjust according to where the
2060 section symbol winds up in the output section. */
4a335f3d
AM		 2061 if (r_symndx >= symtab_hdr->sh_info)
2062 continue;
2063
2064 sym = local_syms + r_symndx;
2065 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2066 continue;
2067
2068 sec = local_sections[r_symndx];
2069 val = sec->output_offset;
2070 if (val == 0)
2071 continue;
2072
2073 where = contents + rel->r_offset;
2074 switch (howto->size)
252b5132 2075 {
16a10388 2076 /* FIXME: overflow checks. */
4a335f3d 2077 case 0:
16a10388 2078 val += bfd_get_8 (input_bfd, where);
4a335f3d 2079 bfd_put_8 (input_bfd, val, where);
4a335f3d
AM		 2080 break;
2081 case 1:
16a10388 2082 val += bfd_get_16 (input_bfd, where);
4a335f3d 2083 bfd_put_16 (input_bfd, val, where);
4a335f3d
AM		 2084 break;
2085 case 2:
2086 val += bfd_get_32 (input_bfd, where);
2087 bfd_put_32 (input_bfd, val, where);
2088 break;
2089 default:
2090 abort ();
252b5132 2091 }
252b5132
RH		 2092 continue;
2093 }
2094
2095 /* This is a final link. */
2096 h = NULL;
2097 sym = NULL;
2098 sec = NULL;
b34976b6 2099 unresolved_reloc = FALSE;
252b5132
RH		 2100 if (r_symndx < symtab_hdr->sh_info)
2101 {
2102 sym = local_syms + r_symndx;
2103 sec = local_sections[r_symndx];
2104 relocation = (sec->output_section->vma
2105 + sec->output_offset
2106 + sym->st_value);
f8df10f4
JJ		 2107 if ((sec->flags & SEC_MERGE)
2108 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2109 {
2110 asection *msec;
2111 bfd_vma addend;
4a335f3d 2112 bfd_byte *where = contents + rel->r_offset;
f8df10f4 2113
4a335f3d 2114 switch (howto->size)
f8df10f4 2115 {
4a335f3d
AM		 2116 case 0:
2117 addend = bfd_get_8 (input_bfd, where);
2118 if (howto->pc_relative)
2119 {
2120 addend = (addend ^ 0x80) - 0x80;
2121 addend += 1;
2122 }
2123 break;
2124 case 1:
2125 addend = bfd_get_16 (input_bfd, where);
2126 if (howto->pc_relative)
2127 {
2128 addend = (addend ^ 0x8000) - 0x8000;
2129 addend += 2;
2130 }
2131 break;
2132 case 2:
2133 addend = bfd_get_32 (input_bfd, where);
2134 if (howto->pc_relative)
2135 {
2136 addend = (addend ^ 0x80000000) - 0x80000000;
2137 addend += 4;
2138 }
2139 break;
2140 default:
2141 abort ();
f8df10f4
JJ		 2142 }
2143
f8df10f4 2144 msec = sec;
4a335f3d
AM		 2145 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend);
2146 addend -= relocation;
f8df10f4 2147 addend += msec->output_section->vma + msec->output_offset;
4a335f3d
AM		 2148
2149 switch (howto->size)
2150 {
2151 case 0:
16a10388 2152 /* FIXME: overflow checks. */
4a335f3d
AM		 2153 if (howto->pc_relative)
2154 addend -= 1;
2155 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 2156 break;
2157 case 1:
2158 if (howto->pc_relative)
2159 addend -= 2;
2160 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 2161 break;
2162 case 2:
2163 if (howto->pc_relative)
2164 addend -= 4;
2165 bfd_put_32 (input_bfd, addend, where);
2166 break;
2167 }
f8df10f4 2168 }
252b5132
RH		 2169 }
2170 else
2171 {
560e09e9 2172 bfd_boolean warned;
ffb2e45b 2173
b2a8e766
AM		 2174 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2175 r_symndx, symtab_hdr, sym_hashes,
2176 h, sec, relocation,
2177 unresolved_reloc, warned);
252b5132
RH		 2178 }
2179
2180 switch (r_type)
2181 {
2182 case R_386_GOT32:
2183 /* Relocation is to the entry for this symbol in the global
2184 offset table. */
ffb2e45b
AM		 2185 if (htab->sgot == NULL)
2186 abort ();
252b5132
RH		 2187
2188 if (h != NULL)
2189 {
b34976b6 2190 bfd_boolean dyn;
252b5132
RH		 2191
2192 off = h->got.offset;
ebe50bae 2193 dyn = htab->elf.dynamic_sections_created;
26e41594 2194 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 2195 || (info->shared
586119b3 2196 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 2197 || (ELF_ST_VISIBILITY (h->other)
2198 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2199 {
2200 /* This is actually a static link, or it is a
2201 -Bsymbolic link and the symbol is defined
2202 locally, or the symbol was forced to be local
2203 because of a version file. We must initialize
2204 this entry in the global offset table. Since the
2205 offset must always be a multiple of 4, we use the
2206 least significant bit to record whether we have
2207 initialized it already.
2208
2209 When doing a dynamic link, we create a .rel.got
2210 relocation entry to initialize the value. This
2211 is done in the finish_dynamic_symbol routine. */
2212 if ((off & 1) != 0)
2213 off &= ~1;
2214 else
2215 {
2216 bfd_put_32 (output_bfd, relocation,
6725bdbf 2217 htab->sgot->contents + off);
252b5132
RH		 2218 h->got.offset |= 1;
2219 }
2220 }
8c694914 2221 else
b34976b6 2222 unresolved_reloc = FALSE;
252b5132
RH		 2223 }
2224 else
2225 {
ffb2e45b
AM		 2226 if (local_got_offsets == NULL)
2227 abort ();
252b5132
RH		 2228
2229 off = local_got_offsets[r_symndx];
2230
2231 /* The offset must always be a multiple of 4. We use
83be169b
AM		 2232 the least significant bit to record whether we have
2233 already generated the necessary reloc. */
252b5132
RH		 2234 if ((off & 1) != 0)
2235 off &= ~1;
2236 else
2237 {
6725bdbf
AM		 2238 bfd_put_32 (output_bfd, relocation,
2239 htab->sgot->contents + off);
252b5132
RH		 2240
2241 if (info->shared)
2242 {
947216bf
AM		 2243 asection *s;
2244 Elf_Internal_Rela outrel;
2245 bfd_byte *loc;
252b5132 2246
947216bf
AM		 2247 s = htab->srelgot;
2248 if (s == NULL)
ffb2e45b 2249 abort ();
252b5132 2250
6725bdbf
AM		 2251 outrel.r_offset = (htab->sgot->output_section->vma
2252 + htab->sgot->output_offset
252b5132
RH		 2253 + off);
2254 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
947216bf
AM		 2255 loc = s->contents;
2256 loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 2257 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 2258 }
2259
2260 local_got_offsets[r_symndx] |= 1;
2261 }
252b5132
RH		 2262 }
2263
ffb2e45b
AM		 2264 if (off >= (bfd_vma) -2)
2265 abort ();
2266
8c37241b
JJ		 2267 relocation = htab->sgot->output_section->vma
2268 + htab->sgot->output_offset + off
2269 - htab->sgotplt->output_section->vma
2270 - htab->sgotplt->output_offset;
252b5132
RH		 2271 break;
2272
2273 case R_386_GOTOFF:
2274 /* Relocation is relative to the start of the global offset
2275 table. */
2276
90f487df
L		 2277 /* Check to make sure it isn't a protected function symbol
2278 for shared library since it may not be local when used
2279 as function address. */
2280 if (info->shared
2281 && h
2282 && h->def_regular
2283 && h->type == STT_FUNC
2284 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2285 {
2286 (*_bfd_error_handler)
2287 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
2288 input_bfd, h->root.root.string);
2289 bfd_set_error (bfd_error_bad_value);
2290 return FALSE;
2291 }
2292
8c37241b
JJ		 2293 /* Note that sgot is not involved in this
2294 calculation. We always want the start of .got.plt. If we
2295 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 2296 permitted by the ABI, we might have to change this
2297 calculation. */
8c37241b
JJ		 2298 relocation -= htab->sgotplt->output_section->vma
2299 + htab->sgotplt->output_offset;
252b5132
RH		 2300 break;
2301
2302 case R_386_GOTPC:
2303 /* Use global offset table as symbol value. */
8c37241b
JJ		 2304 relocation = htab->sgotplt->output_section->vma
2305 + htab->sgotplt->output_offset;
b34976b6 2306 unresolved_reloc = FALSE;
252b5132
RH		 2307 break;
2308
2309 case R_386_PLT32:
2310 /* Relocation is to the entry for this symbol in the
2311 procedure linkage table. */
2312
dd5724d5 2313 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 2314 without using the procedure linkage table. */
252b5132
RH		 2315 if (h == NULL)
2316 break;
2317
dd5724d5 2318 if (h->plt.offset == (bfd_vma) -1
6725bdbf 2319 || htab->splt == NULL)
252b5132
RH		 2320 {
2321 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 2322 happens when statically linking PIC code, or when
2323 using -Bsymbolic. */
252b5132
RH		 2324 break;
2325 }
2326
6725bdbf
AM		 2327 relocation = (htab->splt->output_section->vma
2328 + htab->splt->output_offset
252b5132 2329 + h->plt.offset);
b34976b6 2330 unresolved_reloc = FALSE;
252b5132
RH		 2331 break;
2332
2333 case R_386_32:
2334 case R_386_PC32:
ec338859
AM		 2335 /* r_symndx will be zero only for relocs against symbols
2336 from removed linkonce sections, or sections discarded by
2337 a linker script. */
f855931b
AM		 2338 if (r_symndx == 0)
2339 {
2340 /* Zero the section contents. eh_frame generated by old
2341 versions of gcc isn't edited by elf-eh-frame.c, so
2342 FDEs for discarded linkonce functions might remain.
2343 Putting zeros here will zero such FDE's address range.
2344 This is a hint to unwinders and other consumers of
2345 exception handling info that the FDE is invalid. */
2346 bfd_put_32 (input_bfd, 0, contents + rel->r_offset);
3e95eabc 2347 break;
f855931b
AM		 2348 }
2349
2350 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2351 break;
2352
12d0ee4a 2353 if ((info->shared
ef5aade5
L		 2354 && (h == NULL
2355 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2356 || h->root.type != bfd_link_hash_undefweak)
12d0ee4a 2357 && (r_type != R_386_PC32
f6c52c13 2358 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 2359 || (ELIMINATE_COPY_RELOCS
2360 && !info->shared
12d0ee4a
AM		 2361 && h != NULL
2362 && h->dynindx != -1
f5385ebf
AM		 2363 && !h->non_got_ref
2364 && ((h->def_dynamic
2365 && !h->def_regular)
28d0b90e
AM		 2366 || h->root.type == bfd_link_hash_undefweak
2367 || h->root.type == bfd_link_hash_undefined)))
252b5132 2368 {
947216bf
AM		 2369 Elf_Internal_Rela outrel;
2370 bfd_byte *loc;
b34976b6 2371 bfd_boolean skip, relocate;
0c715baa 2372 asection *sreloc;
252b5132
RH		 2373
2374 /* When generating a shared object, these relocations
2375 are copied into the output file to be resolved at run
2376 time. */
2377
b34976b6
AM		 2378 skip = FALSE;
2379 relocate = FALSE;
252b5132 2380
c629eae0
JJ		 2381 outrel.r_offset =
2382 _bfd_elf_section_offset (output_bfd, info, input_section,
2383 rel->r_offset);
2384 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2385 skip = TRUE;
0bb2d96a 2386 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2387 skip = TRUE, relocate = TRUE;
252b5132
RH		 2388 outrel.r_offset += (input_section->output_section->vma
2389 + input_section->output_offset);
2390
2391 if (skip)
0bb2d96a 2392 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 2393 else if (h != NULL
2394 && h->dynindx != -1
2395 && (r_type == R_386_PC32
2396 || !info->shared
2397 || !info->symbolic
f5385ebf 2398 || !h->def_regular))
0bb2d96a 2399 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 2400 else
2401 {
5a15f56f 2402 /* This symbol is local, or marked to become local. */
b34976b6 2403 relocate = TRUE;
5a15f56f 2404 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 2405 }
2406
0c715baa
AM		 2407 sreloc = elf_section_data (input_section)->sreloc;
2408 if (sreloc == NULL)
2409 abort ();
2410
947216bf
AM		 2411 loc = sreloc->contents;
2412 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
0c715baa 2413 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 2414
2415 /* If this reloc is against an external symbol, we do
2416 not want to fiddle with the addend. Otherwise, we
2417 need to include the symbol value so that it becomes
2418 an addend for the dynamic reloc. */
2419 if (! relocate)
2420 continue;
2421 }
252b5132
RH		 2422 break;
2423
37e55690
JJ		 2424 case R_386_TLS_IE:
2425 if (info->shared)
2426 {
947216bf
AM		 2427 Elf_Internal_Rela outrel;
2428 bfd_byte *loc;
37e55690 2429 asection *sreloc;
37e55690
JJ		 2430
2431 outrel.r_offset = rel->r_offset
2432 + input_section->output_section->vma
2433 + input_section->output_offset;
2434 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2435 sreloc = elf_section_data (input_section)->sreloc;
2436 if (sreloc == NULL)
2437 abort ();
947216bf
AM		 2438 loc = sreloc->contents;
2439 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 2440 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2441 }
2442 /* Fall through */
2443
13ae64f3
JJ		 2444 case R_386_TLS_GD:
2445 case R_386_TLS_IE_32:
37e55690 2446 case R_386_TLS_GOTIE:
13ae64f3
JJ		 2447 r_type = elf_i386_tls_transition (info, r_type, h == NULL);
2448 tls_type = GOT_UNKNOWN;
2449 if (h == NULL && local_got_offsets)
2450 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
2451 else if (h != NULL)
2452 {
2453 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690 2454 if (!info->shared && h->dynindx == -1 && (tls_type & GOT_TLS_IE))
13ae64f3
JJ		 2455 r_type = R_386_TLS_LE_32;
2456 }
37e55690
JJ		 2457 if (tls_type == GOT_TLS_IE)
2458 tls_type = GOT_TLS_IE_NEG;
2459 if (r_type == R_386_TLS_GD)
2460 {
2461 if (tls_type == GOT_TLS_IE_POS)
2462 r_type = R_386_TLS_GOTIE;
2463 else if (tls_type & GOT_TLS_IE)
2464 r_type = R_386_TLS_IE_32;
2465 }
13ae64f3
JJ		 2466
2467 if (r_type == R_386_TLS_LE_32)
2468 {
82e51918 2469 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 2470 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
2471 {
2472 unsigned int val, type;
2473 bfd_vma roff;
2474
2475 /* GD->LE transition. */
2476 BFD_ASSERT (rel->r_offset >= 2);
2477 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2478 BFD_ASSERT (type == 0x8d || type == 0x04);
eea6121a 2479 BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
13ae64f3
JJ		 2480 BFD_ASSERT (bfd_get_8 (input_bfd,
2481 contents + rel->r_offset + 4)
2482 == 0xe8);
2483 BFD_ASSERT (rel + 1 < relend);
2484 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
2485 roff = rel->r_offset + 5;
2486 val = bfd_get_8 (input_bfd,
2487 contents + rel->r_offset - 1);
2488 if (type == 0x04)
2489 {
2490 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
2491 Change it into:
2492 movl %gs:0, %eax; subl $foo@tpoff, %eax
2493 (6 byte form of subl). */
2494 BFD_ASSERT (rel->r_offset >= 3);
2495 BFD_ASSERT (bfd_get_8 (input_bfd,
2496 contents + rel->r_offset - 3)
2497 == 0x8d);
2498 BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
2499 memcpy (contents + rel->r_offset - 3,
2500 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
2501 }
2502 else
2503 {
2504 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
eea6121a 2505 if (rel->r_offset + 10 <= input_section->size
13ae64f3
JJ		 2506 && bfd_get_8 (input_bfd,
2507 contents + rel->r_offset + 9) == 0x90)
2508 {
2509 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
2510 Change it into:
2511 movl %gs:0, %eax; subl $foo@tpoff, %eax
2512 (6 byte form of subl). */
2513 memcpy (contents + rel->r_offset - 2,
2514 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
2515 roff = rel->r_offset + 6;
2516 }
2517 else
2518 {
2519 /* leal foo(%reg), %eax; call ___tls_get_addr
2520 Change it into:
2521 movl %gs:0, %eax; subl $foo@tpoff, %eax
2522 (5 byte form of subl). */
2523 memcpy (contents + rel->r_offset - 2,
2524 "\x65\xa1\0\0\0\0\x2d\0\0\0", 11);
2525 }
2526 }
2527 bfd_put_32 (output_bfd, tpoff (info, relocation),
2528 contents + roff);
2529 /* Skip R_386_PLT32. */
2530 rel++;
2531 continue;
2532 }
37e55690 2533 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3
JJ		 2534 {
2535 unsigned int val, type;
2536
2537 /* IE->LE transition:
37e55690
JJ		 2538 Originally it can be one of:
2539 movl foo, %eax
2540 movl foo, %reg
2541 addl foo, %reg
2542 We change it into:
2543 movl $foo, %eax
2544 movl $foo, %reg
2545 addl $foo, %reg. */
2546 BFD_ASSERT (rel->r_offset >= 1);
2547 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
eea6121a 2548 BFD_ASSERT (rel->r_offset + 4 <= input_section->size);
37e55690
JJ		 2549 if (val == 0xa1)
2550 {
2551 /* movl foo, %eax. */
55fd94b0
AM		 2552 bfd_put_8 (output_bfd, 0xb8,
2553 contents + rel->r_offset - 1);
37e55690 2554 }
299bf759 2555 else
37e55690 2556 {
299bf759 2557 BFD_ASSERT (rel->r_offset >= 2);
55fd94b0
AM		 2558 type = bfd_get_8 (input_bfd,
2559 contents + rel->r_offset - 2);
299bf759 2560 switch (type)
26e41594 2561 {
299bf759
L		 2562 case 0x8b:
2563 /* movl */
2564 BFD_ASSERT ((val & 0xc7) == 0x05);
2565 bfd_put_8 (output_bfd, 0xc7,
2566 contents + rel->r_offset - 2);
2567 bfd_put_8 (output_bfd,
2568 0xc0 | ((val >> 3) & 7),
2569 contents + rel->r_offset - 1);
2570 break;
2571 case 0x03:
2572 /* addl */
2573 BFD_ASSERT ((val & 0xc7) == 0x05);
2574 bfd_put_8 (output_bfd, 0x81,
2575 contents + rel->r_offset - 2);
2576 bfd_put_8 (output_bfd,
2577 0xc0 | ((val >> 3) & 7),
2578 contents + rel->r_offset - 1);
2579 break;
2580 default:
2581 BFD_FAIL ();
2582 break;
26e41594 2583 }
37e55690 2584 }
37e55690
JJ		 2585 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2586 contents + rel->r_offset);
2587 continue;
2588 }
2589 else
2590 {
2591 unsigned int val, type;
2592
2593 /* {IE_32,GOTIE}->LE transition:
2594 Originally it can be one of:
13ae64f3 2595 subl foo(%reg1), %reg2
13ae64f3 2596 movl foo(%reg1), %reg2
37e55690 2597 addl foo(%reg1), %reg2
13ae64f3
JJ		 2598 We change it into:
2599 subl $foo, %reg2
37e55690
JJ		 2600 movl $foo, %reg2 (6 byte form)
2601 addl $foo, %reg2. */
13ae64f3
JJ		 2602 BFD_ASSERT (rel->r_offset >= 2);
2603 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2604 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
eea6121a 2605 BFD_ASSERT (rel->r_offset + 4 <= input_section->size);
37e55690 2606 BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4);
13ae64f3
JJ		 2607 if (type == 0x8b)
2608 {
2609 /* movl */
13ae64f3
JJ		 2610 bfd_put_8 (output_bfd, 0xc7,
2611 contents + rel->r_offset - 2);
2612 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2613 contents + rel->r_offset - 1);
2614 }
2615 else if (type == 0x2b)
2616 {
2617 /* subl */
13ae64f3
JJ		 2618 bfd_put_8 (output_bfd, 0x81,
2619 contents + rel->r_offset - 2);
2620 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
2621 contents + rel->r_offset - 1);
2622 }
37e55690
JJ		 2623 else if (type == 0x03)
2624 {
2625 /* addl */
2626 bfd_put_8 (output_bfd, 0x81,
2627 contents + rel->r_offset - 2);
2628 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2629 contents + rel->r_offset - 1);
2630 }
13ae64f3
JJ		 2631 else
2632 BFD_FAIL ();
37e55690
JJ		 2633 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
2634 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2635 contents + rel->r_offset);
2636 else
2637 bfd_put_32 (output_bfd, tpoff (info, relocation),
2638 contents + rel->r_offset);
13ae64f3
JJ		 2639 continue;
2640 }
2641 }
2642
2643 if (htab->sgot == NULL)
2644 abort ();
2645
2646 if (h != NULL)
2647 off = h->got.offset;
2648 else
2649 {
2650 if (local_got_offsets == NULL)
2651 abort ();
2652
2653 off = local_got_offsets[r_symndx];
2654 }
2655
2656 if ((off & 1) != 0)
2657 off &= ~1;
26e41594 2658 else
13ae64f3 2659 {
947216bf
AM		 2660 Elf_Internal_Rela outrel;
2661 bfd_byte *loc;
13ae64f3
JJ		 2662 int dr_type, indx;
2663
2664 if (htab->srelgot == NULL)
2665 abort ();
2666
2667 outrel.r_offset = (htab->sgot->output_section->vma
2668 + htab->sgot->output_offset + off);
2669
13ae64f3
JJ		 2670 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2671 if (r_type == R_386_TLS_GD)
2672 dr_type = R_386_TLS_DTPMOD32;
37e55690
JJ		 2673 else if (tls_type == GOT_TLS_IE_POS)
2674 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 2675 else
2676 dr_type = R_386_TLS_TPOFF32;
37e55690
JJ		 2677 if (dr_type == R_386_TLS_TPOFF && indx == 0)
2678 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
2679 htab->sgot->contents + off);
2680 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
c5c1f40c 2681 bfd_put_32 (output_bfd, dtpoff_base (info) - relocation,
c366c25e
JJ		 2682 htab->sgot->contents + off);
2683 else
2684 bfd_put_32 (output_bfd, 0,
2685 htab->sgot->contents + off);
13ae64f3 2686 outrel.r_info = ELF32_R_INFO (indx, dr_type);
947216bf
AM		 2687 loc = htab->srelgot->contents;
2688 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2689 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2690
2691 if (r_type == R_386_TLS_GD)
2692 {
2693 if (indx == 0)
2694 {
82e51918 2695 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 2696 bfd_put_32 (output_bfd,
2697 relocation - dtpoff_base (info),
2698 htab->sgot->contents + off + 4);
2699 }
2700 else
2701 {
2702 bfd_put_32 (output_bfd, 0,
2703 htab->sgot->contents + off + 4);
2704 outrel.r_info = ELF32_R_INFO (indx,
2705 R_386_TLS_DTPOFF32);
2706 outrel.r_offset += 4;
2707 htab->srelgot->reloc_count++;
947216bf
AM		 2708 loc += sizeof (Elf32_External_Rel);
2709 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
13ae64f3
JJ		 2710 }
2711 }
37e55690
JJ		 2712 else if (tls_type == GOT_TLS_IE_BOTH)
2713 {
2714 bfd_put_32 (output_bfd,
2715 indx == 0 ? relocation - dtpoff_base (info) : 0,
2716 htab->sgot->contents + off + 4);
2717 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
2718 outrel.r_offset += 4;
2719 htab->srelgot->reloc_count++;
947216bf 2720 loc += sizeof (Elf32_External_Rel);
37e55690
JJ		 2721 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2722 }
13ae64f3
JJ		 2723
2724 if (h != NULL)
2725 h->got.offset |= 1;
2726 else
2727 local_got_offsets[r_symndx] |= 1;
2728 }
2729
2730 if (off >= (bfd_vma) -2)
2731 abort ();
2732 if (r_type == ELF32_R_TYPE (rel->r_info))
2733 {
8c37241b
JJ		 2734 bfd_vma g_o_t = htab->sgotplt->output_section->vma
2735 + htab->sgotplt->output_offset;
2736 relocation = htab->sgot->output_section->vma
2737 + htab->sgot->output_offset + off - g_o_t;
37e55690
JJ		 2738 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
2739 && tls_type == GOT_TLS_IE_BOTH)
2740 relocation += 4;
2741 if (r_type == R_386_TLS_IE)
8c37241b 2742 relocation += g_o_t;
b34976b6 2743 unresolved_reloc = FALSE;
13ae64f3
JJ		 2744 }
2745 else
2746 {
2747 unsigned int val, type;
2748 bfd_vma roff;
2749
2750 /* GD->IE transition. */
2751 BFD_ASSERT (rel->r_offset >= 2);
2752 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2753 BFD_ASSERT (type == 0x8d || type == 0x04);
eea6121a 2754 BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
13ae64f3
JJ		 2755 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
2756 == 0xe8);
2757 BFD_ASSERT (rel + 1 < relend);
2758 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
2759 roff = rel->r_offset - 3;
2760 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
2761 if (type == 0x04)
2762 {
2763 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
2764 Change it into:
2765 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
2766 BFD_ASSERT (rel->r_offset >= 3);
2767 BFD_ASSERT (bfd_get_8 (input_bfd,
2768 contents + rel->r_offset - 3)
2769 == 0x8d);
2770 BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
2771 val >>= 3;
2772 }
2773 else
2774 {
2775 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
2776 Change it into:
2777 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
eea6121a 2778 BFD_ASSERT (rel->r_offset + 10 <= input_section->size);
13ae64f3
JJ		 2779 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
2780 BFD_ASSERT (bfd_get_8 (input_bfd,
2781 contents + rel->r_offset + 9)
2782 == 0x90);
2783 roff = rel->r_offset - 2;
2784 }
2785 memcpy (contents + roff,
2786 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
2787 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 2788 /* If foo is used only with foo@gotntpoff(%reg) and
2789 foo@indntpoff, but not with foo@gottpoff(%reg), change
2790 subl $foo@gottpoff(%reg), %eax
2791 into:
2792 addl $foo@gotntpoff(%reg), %eax. */
2793 if (r_type == R_386_TLS_GOTIE)
2794 {
2795 contents[roff + 6] = 0x03;
2796 if (tls_type == GOT_TLS_IE_BOTH)
2797 off += 4;
2798 }
8c37241b
JJ		 2799 bfd_put_32 (output_bfd,
2800 htab->sgot->output_section->vma
2801 + htab->sgot->output_offset + off
2802 - htab->sgotplt->output_section->vma
2803 - htab->sgotplt->output_offset,
13ae64f3
JJ		 2804 contents + roff + 8);
2805 /* Skip R_386_PLT32. */
2806 rel++;
2807 continue;
2808 }
2809 break;
2810
2811 case R_386_TLS_LDM:
2812 if (! info->shared)
2813 {
2814 unsigned int val;
2815
2816 /* LD->LE transition:
2817 Ensure it is:
2818 leal foo(%reg), %eax; call ___tls_get_addr.
2819 We change it into:
2820 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
2821 BFD_ASSERT (rel->r_offset >= 2);
2822 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2)
2823 == 0x8d);
2824 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
2825 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
eea6121a 2826 BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
13ae64f3
JJ		 2827 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
2828 == 0xe8);
2829 BFD_ASSERT (rel + 1 < relend);
2830 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
2831 memcpy (contents + rel->r_offset - 2,
2832 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
2833 /* Skip R_386_PLT32. */
2834 rel++;
2835 continue;
2836 }
2837
2838 if (htab->sgot == NULL)
2839 abort ();
2840
2841 off = htab->tls_ldm_got.offset;
2842 if (off & 1)
2843 off &= ~1;
2844 else
2845 {
947216bf
AM		 2846 Elf_Internal_Rela outrel;
2847 bfd_byte *loc;
13ae64f3
JJ		 2848
2849 if (htab->srelgot == NULL)
2850 abort ();
2851
2852 outrel.r_offset = (htab->sgot->output_section->vma
2853 + htab->sgot->output_offset + off);
2854
2855 bfd_put_32 (output_bfd, 0,
2856 htab->sgot->contents + off);
2857 bfd_put_32 (output_bfd, 0,
2858 htab->sgot->contents + off + 4);
2859 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
947216bf
AM		 2860 loc = htab->srelgot->contents;
2861 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2862 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2863 htab->tls_ldm_got.offset |= 1;
2864 }
8c37241b
JJ		 2865 relocation = htab->sgot->output_section->vma
2866 + htab->sgot->output_offset + off
2867 - htab->sgotplt->output_section->vma
2868 - htab->sgotplt->output_offset;
b34976b6 2869 unresolved_reloc = FALSE;
13ae64f3
JJ		 2870 break;
2871
2872 case R_386_TLS_LDO_32:
a45bb67d 2873 if (info->shared || (input_section->flags & SEC_CODE) == 0)
13ae64f3
JJ		 2874 relocation -= dtpoff_base (info);
2875 else
2876 /* When converting LDO to LE, we must negate. */
2877 relocation = -tpoff (info, relocation);
2878 break;
2879
2880 case R_386_TLS_LE_32:
13ae64f3 2881 case R_386_TLS_LE:
37e55690
JJ		 2882 if (info->shared)
2883 {
947216bf 2884 Elf_Internal_Rela outrel;
37e55690 2885 asection *sreloc;
947216bf 2886 bfd_byte *loc;
37e55690
JJ		 2887 int indx;
2888
2889 outrel.r_offset = rel->r_offset
2890 + input_section->output_section->vma
2891 + input_section->output_offset;
2892 if (h != NULL && h->dynindx != -1)
2893 indx = h->dynindx;
2894 else
2895 indx = 0;
2896 if (r_type == R_386_TLS_LE_32)
2897 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
2898 else
2899 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
2900 sreloc = elf_section_data (input_section)->sreloc;
2901 if (sreloc == NULL)
2902 abort ();
947216bf
AM		 2903 loc = sreloc->contents;
2904 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 2905 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2906 if (indx)
2907 continue;
2908 else if (r_type == R_386_TLS_LE_32)
2909 relocation = dtpoff_base (info) - relocation;
2910 else
2911 relocation -= dtpoff_base (info);
2912 }
2913 else if (r_type == R_386_TLS_LE_32)
2914 relocation = tpoff (info, relocation);
2915 else
2916 relocation = -tpoff (info, relocation);
13ae64f3
JJ		 2917 break;
2918
252b5132
RH		 2919 default:
2920 break;
2921 }
2922
239e1f3a
AM		 2923 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
2924 because such sections are not SEC_ALLOC and thus ld.so will
2925 not process them. */
8c694914 2926 if (unresolved_reloc
239e1f3a 2927 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 2928 && h->def_dynamic))
6a30718d
JJ		 2929 {
2930 (*_bfd_error_handler)
d003868e
AM		 2931 (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"),
2932 input_bfd,
2933 input_section,
6a30718d
JJ		 2934 (long) rel->r_offset,
2935 h->root.root.string);
b34976b6 2936 return FALSE;
6a30718d 2937 }
83be169b 2938
252b5132
RH		 2939 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2940 contents, rel->r_offset,
55fd94b0 2941 relocation, 0);
252b5132 2942
cf5c0c5b 2943 if (r != bfd_reloc_ok)
252b5132 2944 {
cf5c0c5b 2945 const char *name;
ffb2e45b 2946
cf5c0c5b
AM		 2947 if (h != NULL)
2948 name = h->root.root.string;
2949 else
2950 {
2951 name = bfd_elf_string_from_elf_section (input_bfd,
2952 symtab_hdr->sh_link,
2953 sym->st_name);
2954 if (name == NULL)
b34976b6 2955 return FALSE;
cf5c0c5b
AM		 2956 if (*name == '\0')
2957 name = bfd_section_name (input_bfd, sec);
2958 }
ffb2e45b 2959
cf5c0c5b
AM		 2960 if (r == bfd_reloc_overflow)
2961 {
cf5c0c5b 2962 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 2963 (info, (h ? &h->root : NULL), name, howto->name,
2964 (bfd_vma) 0, input_bfd, input_section,
2965 rel->r_offset)))
b34976b6 2966 return FALSE;
cf5c0c5b
AM		 2967 }
2968 else
2969 {
2970 (*_bfd_error_handler)
d003868e
AM		 2971 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
2972 input_bfd, input_section,
cf5c0c5b 2973 (long) rel->r_offset, name, (int) r);
b34976b6 2974 return FALSE;
cf5c0c5b 2975 }
252b5132
RH		 2976 }
2977 }
2978
b34976b6 2979 return TRUE;
252b5132
RH		 2980}
2981
2982/* Finish up dynamic symbol handling. We set the contents of various
2983 dynamic sections here. */
2984
b34976b6 2985static bfd_boolean
55fd94b0
AM		 2986elf_i386_finish_dynamic_symbol (bfd *output_bfd,
2987 struct bfd_link_info *info,
2988 struct elf_link_hash_entry *h,
2989 Elf_Internal_Sym *sym)
252b5132 2990{
6725bdbf 2991 struct elf_i386_link_hash_table *htab;
252b5132 2992
6725bdbf 2993 htab = elf_i386_hash_table (info);
252b5132
RH		 2994
2995 if (h->plt.offset != (bfd_vma) -1)
2996 {
252b5132
RH		 2997 bfd_vma plt_index;
2998 bfd_vma got_offset;
947216bf
AM		 2999 Elf_Internal_Rela rel;
3000 bfd_byte *loc;
252b5132
RH		 3001
3002 /* This symbol has an entry in the procedure linkage table. Set
3003 it up. */
3004
ffb2e45b
AM		 3005 if (h->dynindx == -1
3006 || htab->splt == NULL
3007 || htab->sgotplt == NULL
3008 || htab->srelplt == NULL)
3009 abort ();
252b5132
RH		 3010
3011 /* Get the index in the procedure linkage table which
3012 corresponds to this symbol. This is the index of this symbol
3013 in all the symbols for which we are making plt entries. The
3014 first entry in the procedure linkage table is reserved. */
3015 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3016
3017 /* Get the offset into the .got table of the entry that
3018 corresponds to this function. Each .got entry is 4 bytes.
3019 The first three are reserved. */
3020 got_offset = (plt_index + 3) * 4;
3021
3022 /* Fill in the entry in the procedure linkage table. */
3023 if (! info->shared)
3024 {
6725bdbf 3025 memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry,
252b5132
RH		 3026 PLT_ENTRY_SIZE);
3027 bfd_put_32 (output_bfd,
6725bdbf
AM		 3028 (htab->sgotplt->output_section->vma
3029 + htab->sgotplt->output_offset
252b5132 3030 + got_offset),
6725bdbf 3031 htab->splt->contents + h->plt.offset + 2);
252b5132
RH		 3032 }
3033 else
3034 {
6725bdbf 3035 memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry,
252b5132
RH		 3036 PLT_ENTRY_SIZE);
3037 bfd_put_32 (output_bfd, got_offset,
6725bdbf 3038 htab->splt->contents + h->plt.offset + 2);
252b5132
RH		 3039 }
3040
3041 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
6725bdbf 3042 htab->splt->contents + h->plt.offset + 7);
252b5132 3043 bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
6725bdbf 3044 htab->splt->contents + h->plt.offset + 12);
252b5132
RH		 3045
3046 /* Fill in the entry in the global offset table. */
3047 bfd_put_32 (output_bfd,
6725bdbf
AM		 3048 (htab->splt->output_section->vma
3049 + htab->splt->output_offset
252b5132
RH		 3050 + h->plt.offset
3051 + 6),
6725bdbf 3052 htab->sgotplt->contents + got_offset);
252b5132
RH		 3053
3054 /* Fill in the entry in the .rel.plt section. */
6725bdbf
AM		 3055 rel.r_offset = (htab->sgotplt->output_section->vma
3056 + htab->sgotplt->output_offset
252b5132
RH		 3057 + got_offset);
3058 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
947216bf 3059 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 3060 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 3061
f5385ebf 3062 if (!h->def_regular)
252b5132
RH		 3063 {
3064 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 3065 the .plt section. Leave the value if there were any
3066 relocations where pointer equality matters (this is a clue
51b64d56
AM		 3067 for the dynamic linker, to make function pointer
3068 comparisons work between an application and shared
c6585bbb
JJ		 3069 library), otherwise set it to zero. If a function is only
3070 called from a binary, there is no need to slow down
3071 shared libraries because of that. */
252b5132 3072 sym->st_shndx = SHN_UNDEF;
f5385ebf 3073 if (!h->pointer_equality_needed)
c6585bbb 3074 sym->st_value = 0;
252b5132
RH		 3075 }
3076 }
3077
13ae64f3
JJ		 3078 if (h->got.offset != (bfd_vma) -1
3079 && elf_i386_hash_entry(h)->tls_type != GOT_TLS_GD
37e55690 3080 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 3081 {
947216bf
AM		 3082 Elf_Internal_Rela rel;
3083 bfd_byte *loc;
252b5132
RH		 3084
3085 /* This symbol has an entry in the global offset table. Set it
3086 up. */
3087
ffb2e45b
AM		 3088 if (htab->sgot == NULL || htab->srelgot == NULL)
3089 abort ();
252b5132 3090
6725bdbf
AM		 3091 rel.r_offset = (htab->sgot->output_section->vma
3092 + htab->sgot->output_offset
dc810e39 3093 + (h->got.offset & ~(bfd_vma) 1));
252b5132 3094
dd5724d5
AM		 3095 /* If this is a static link, or it is a -Bsymbolic link and the
3096 symbol is defined locally or was forced to be local because
3097 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 3098 The entry in the global offset table will already have been
3099 initialized in the relocate_section function. */
6725bdbf 3100 if (info->shared
586119b3 3101 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 3102 {
6725bdbf 3103 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 3104 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3105 }
252b5132
RH		 3106 else
3107 {
dd5724d5 3108 BFD_ASSERT((h->got.offset & 1) == 0);
6725bdbf
AM		 3109 bfd_put_32 (output_bfd, (bfd_vma) 0,
3110 htab->sgot->contents + h->got.offset);
252b5132
RH		 3111 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
3112 }
3113
947216bf
AM		 3114 loc = htab->srelgot->contents;
3115 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3116 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 3117 }
3118
f5385ebf 3119 if (h->needs_copy)
252b5132 3120 {
947216bf
AM		 3121 Elf_Internal_Rela rel;
3122 bfd_byte *loc;
252b5132
RH		 3123
3124 /* This symbol needs a copy reloc. Set it up. */
3125
ffb2e45b
AM		 3126 if (h->dynindx == -1
3127 || (h->root.type != bfd_link_hash_defined
3128 && h->root.type != bfd_link_hash_defweak)
3129 || htab->srelbss == NULL)
3130 abort ();
252b5132
RH		 3131
3132 rel.r_offset = (h->root.u.def.value
3133 + h->root.u.def.section->output_section->vma
3134 + h->root.u.def.section->output_offset);
3135 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
947216bf
AM		 3136 loc = htab->srelbss->contents;
3137 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3138 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 3139 }
3140
3141 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
3142 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3143 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3144 sym->st_shndx = SHN_ABS;
3145
b34976b6 3146 return TRUE;
252b5132
RH		 3147}
3148
38701953
AM		 3149/* Used to decide how to sort relocs in an optimal manner for the
3150 dynamic linker, before writing them out. */
3151
3152static enum elf_reloc_type_class
55fd94b0 3153elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
38701953 3154{
55fd94b0 3155 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 3156 {
3157 case R_386_RELATIVE:
3158 return reloc_class_relative;
3159 case R_386_JUMP_SLOT:
3160 return reloc_class_plt;
3161 case R_386_COPY:
3162 return reloc_class_copy;
3163 default:
3164 return reloc_class_normal;
3165 }
3166}
3167
252b5132
RH		 3168/* Finish up the dynamic sections. */
3169
b34976b6 3170static bfd_boolean
55fd94b0
AM		 3171elf_i386_finish_dynamic_sections (bfd *output_bfd,
3172 struct bfd_link_info *info)
252b5132 3173{
6725bdbf 3174 struct elf_i386_link_hash_table *htab;
252b5132 3175 bfd *dynobj;
252b5132
RH		 3176 asection *sdyn;
3177
6725bdbf 3178 htab = elf_i386_hash_table (info);
ebe50bae 3179 dynobj = htab->elf.dynobj;
252b5132
RH		 3180 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3181
ebe50bae 3182 if (htab->elf.dynamic_sections_created)
252b5132 3183 {
252b5132
RH		 3184 Elf32_External_Dyn *dyncon, *dynconend;
3185
ffb2e45b
AM		 3186 if (sdyn == NULL || htab->sgot == NULL)
3187 abort ();
252b5132
RH		 3188
3189 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3190 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 3191 for (; dyncon < dynconend; dyncon++)
3192 {
3193 Elf_Internal_Dyn dyn;
51b64d56 3194 asection *s;
252b5132
RH		 3195
3196 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3197
3198 switch (dyn.d_tag)
3199 {
3200 default:
0ac8d2ca 3201 continue;
252b5132
RH		 3202
3203 case DT_PLTGOT:
8c37241b
JJ		 3204 s = htab->sgotplt;
3205 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 3206 break;
3207
252b5132 3208 case DT_JMPREL:
6348e046
AM		 3209 s = htab->srelplt;
3210 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 3211 break;
3212
3213 case DT_PLTRELSZ:
6348e046 3214 s = htab->srelplt;
eea6121a 3215 dyn.d_un.d_val = s->size;
252b5132
RH		 3216 break;
3217
3218 case DT_RELSZ:
3219 /* My reading of the SVR4 ABI indicates that the
3220 procedure linkage table relocs (DT_JMPREL) should be
3221 included in the overall relocs (DT_REL). This is
3222 what Solaris does. However, UnixWare can not handle
3223 that case. Therefore, we override the DT_RELSZ entry
6348e046
AM		 3224 here to make it not include the JMPREL relocs. */
3225 s = htab->srelplt;
3226 if (s == NULL)
3227 continue;
eea6121a 3228 dyn.d_un.d_val -= s->size;
6348e046
AM		 3229 break;
3230
3231 case DT_REL:
3232 /* We may not be using the standard ELF linker script.
3233 If .rel.plt is the first .rel section, we adjust
3234 DT_REL to not include it. */
3235 s = htab->srelplt;
3236 if (s == NULL)
3237 continue;
3238 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
3239 continue;
eea6121a 3240 dyn.d_un.d_ptr += s->size;
252b5132
RH		 3241 break;
3242 }
0ac8d2ca
AM		 3243
3244 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 3245 }
3246
3247 /* Fill in the first entry in the procedure linkage table. */
eea6121a 3248 if (htab->splt && htab->splt->size > 0)
252b5132
RH		 3249 {
3250 if (info->shared)
6725bdbf
AM		 3251 memcpy (htab->splt->contents,
3252 elf_i386_pic_plt0_entry, PLT_ENTRY_SIZE);
252b5132
RH		 3253 else
3254 {
6725bdbf
AM		 3255 memcpy (htab->splt->contents,
3256 elf_i386_plt0_entry, PLT_ENTRY_SIZE);
252b5132 3257 bfd_put_32 (output_bfd,
6725bdbf
AM		 3258 (htab->sgotplt->output_section->vma
3259 + htab->sgotplt->output_offset
3260 + 4),
3261 htab->splt->contents + 2);
252b5132 3262 bfd_put_32 (output_bfd,
6725bdbf
AM		 3263 (htab->sgotplt->output_section->vma
3264 + htab->sgotplt->output_offset
3265 + 8),
3266 htab->splt->contents + 8);
252b5132
RH		 3267 }
3268
3269 /* UnixWare sets the entsize of .plt to 4, although that doesn't
3270 really seem like the right value. */
6725bdbf
AM		 3271 elf_section_data (htab->splt->output_section)
3272 ->this_hdr.sh_entsize = 4;
252b5132
RH		 3273 }
3274 }
3275
12d0ee4a 3276 if (htab->sgotplt)
252b5132 3277 {
12d0ee4a 3278 /* Fill in the first three entries in the global offset table. */
eea6121a 3279 if (htab->sgotplt->size > 0)
12d0ee4a
AM		 3280 {
3281 bfd_put_32 (output_bfd,
55fd94b0 3282 (sdyn == NULL ? 0
12d0ee4a
AM		 3283 : sdyn->output_section->vma + sdyn->output_offset),
3284 htab->sgotplt->contents);
55fd94b0
AM		 3285 bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 4);
3286 bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 8);
12d0ee4a 3287 }
252b5132 3288
12d0ee4a
AM		 3289 elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4;
3290 }
8c37241b 3291
eea6121a 3292 if (htab->sgot && htab->sgot->size > 0)
8c37241b
JJ		 3293 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
3294
b34976b6 3295 return TRUE;
252b5132
RH		 3296}
3297
4c45e5c9
JJ		 3298/* Return address for Ith PLT stub in section PLT, for relocation REL
3299 or (bfd_vma) -1 if it should not be included. */
3300
3301static bfd_vma
3302elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
3303 const arelent *rel ATTRIBUTE_UNUSED)
3304{
3305 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
3306}
3307
3308
252b5132
RH		 3309#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
3310#define TARGET_LITTLE_NAME "elf32-i386"
3311#define ELF_ARCH bfd_arch_i386
3312#define ELF_MACHINE_CODE EM_386
3313#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 3314
3315#define elf_backend_can_gc_sections 1
51b64d56 3316#define elf_backend_can_refcount 1
252b5132
RH		 3317#define elf_backend_want_got_plt 1
3318#define elf_backend_plt_readonly 1
3319#define elf_backend_want_plt_sym 0
3320#define elf_backend_got_header_size 12
252b5132 3321
8c29f035
AM		 3322/* Support RELA for objdump of prelink objects. */
3323#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 3324#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
3325
13ae64f3 3326#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 3327
dd5724d5
AM		 3328#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
3329#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
3330#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
3331
3332#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
3333#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 3334#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 3335#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 3336#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 3337#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
3338#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
3339#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
3340#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 3341#define elf_backend_grok_prstatus elf_i386_grok_prstatus
3342#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 3343#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 3344#define elf_backend_relocate_section elf_i386_relocate_section
3345#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
4c45e5c9 3346#define elf_backend_plt_sym_val elf_i386_plt_sym_val
dd5724d5 3347
252b5132 3348#include "elf32-target.h"
2bc3c89a
AM		 3349
3350/* FreeBSD support. */
3351
3352#undef TARGET_LITTLE_SYM
3353#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
3354#undef TARGET_LITTLE_NAME
3355#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
3356
3357/* The kernel recognizes executables as valid only if they carry a
3358 "FreeBSD" label in the ELF header. So we put this label on all
3359 executables and (for simplicity) also all other object files. */
3360
2bc3c89a 3361static void
55fd94b0
AM		 3362elf_i386_post_process_headers (bfd *abfd,
3363 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2bc3c89a
AM		 3364{
3365 Elf_Internal_Ehdr *i_ehdrp;
3366
3367 i_ehdrp = elf_elfheader (abfd);
3368
3369 /* Put an ABI label supported by FreeBSD >= 4.1. */
3370 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD;
3371#ifdef OLD_FREEBSD_ABI_LABEL
3372 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
3373 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 3374#endif
2bc3c89a
AM		 3375}
3376
3377#undef elf_backend_post_process_headers
571fe01f
NC		 3378#define elf_backend_post_process_headers elf_i386_post_process_headers
3379#undef elf32_bed
3380#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a
AM		 3381
3382#include "elf32-target.h"
GDB Binutils - Deliverables
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