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* config/tc-sh.c: Remove trailing whitespace.
[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
61adc1a4 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
638632bd 3 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
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 {
dc47f327 326 (*_bfd_error_handler) (_("%s: invalid relocation type %d"),
8f615d07 327 bfd_archive_filename (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;
354 size_t raw_size;
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;
371 raw_size = bfd_get_32 (abfd, note->descdata + 8);
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;
389 raw_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",
397 raw_size, note->descpos + offset);
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
787 && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
788 /* If called to transfer flags for a weakdef during processing
789 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
790 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
791 dir->elf_link_hash_flags |=
792 (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC
793 | ELF_LINK_HASH_REF_REGULAR
3addb0a9 794 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
c6585bbb
JJ		 795 | ELF_LINK_HASH_NEEDS_PLT
796 | ELF_LINK_POINTER_EQUALITY_NEEDED));
81848ca0
AM		 797 else
798 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
ebe50bae
AM		 799}
800
13ae64f3 801static int
55fd94b0 802elf_i386_tls_transition (struct bfd_link_info *info, int r_type, int is_local)
13ae64f3
JJ		 803{
804 if (info->shared)
805 return r_type;
806
807 switch (r_type)
808 {
809 case R_386_TLS_GD:
810 case R_386_TLS_IE_32:
811 if (is_local)
812 return R_386_TLS_LE_32;
813 return R_386_TLS_IE_32;
37e55690
JJ		 814 case R_386_TLS_IE:
815 case R_386_TLS_GOTIE:
816 if (is_local)
817 return R_386_TLS_LE_32;
818 return r_type;
13ae64f3
JJ		 819 case R_386_TLS_LDM:
820 return R_386_TLS_LE_32;
821 }
822
823 return r_type;
824}
825
252b5132 826/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 827 calculate needed space in the global offset table, procedure linkage
828 table, and dynamic reloc sections. */
252b5132 829
b34976b6 830static bfd_boolean
55fd94b0
AM		 831elf_i386_check_relocs (bfd *abfd,
832 struct bfd_link_info *info,
833 asection *sec,
834 const Elf_Internal_Rela *relocs)
252b5132 835{
6725bdbf 836 struct elf_i386_link_hash_table *htab;
252b5132
RH		 837 Elf_Internal_Shdr *symtab_hdr;
838 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 839 const Elf_Internal_Rela *rel;
840 const Elf_Internal_Rela *rel_end;
252b5132
RH		 841 asection *sreloc;
842
1049f94e 843 if (info->relocatable)
b34976b6 844 return TRUE;
252b5132 845
6725bdbf 846 htab = elf_i386_hash_table (info);
252b5132
RH		 847 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
848 sym_hashes = elf_sym_hashes (abfd);
252b5132 849
252b5132
RH		 850 sreloc = NULL;
851
852 rel_end = relocs + sec->reloc_count;
853 for (rel = relocs; rel < rel_end; rel++)
854 {
13ae64f3 855 unsigned int r_type;
252b5132
RH		 856 unsigned long r_symndx;
857 struct elf_link_hash_entry *h;
858
859 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 860 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 861
d9bc7a44 862 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 863 {
8f615d07
AM		 864 (*_bfd_error_handler) (_("%s: bad symbol index: %d"),
865 bfd_archive_filename (abfd),
866 r_symndx);
b34976b6 867 return FALSE;
f5f31454
L		 868 }
869
252b5132
RH		 870 if (r_symndx < symtab_hdr->sh_info)
871 h = NULL;
872 else
873 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
874
13ae64f3
JJ		 875 r_type = elf_i386_tls_transition (info, r_type, h == NULL);
876
877 switch (r_type)
252b5132 878 {
37e55690
JJ		 879 case R_386_TLS_LDM:
880 htab->tls_ldm_got.refcount += 1;
881 goto create_got;
882
883 case R_386_PLT32:
884 /* This symbol requires a procedure linkage table entry. We
885 actually build the entry in adjust_dynamic_symbol,
886 because this might be a case of linking PIC code which is
887 never referenced by a dynamic object, in which case we
888 don't need to generate a procedure linkage table entry
889 after all. */
890
891 /* If this is a local symbol, we resolve it directly without
892 creating a procedure linkage table entry. */
893 if (h == NULL)
894 continue;
895
896 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
897 h->plt.refcount += 1;
898 break;
899
13ae64f3 900 case R_386_TLS_IE_32:
37e55690
JJ		 901 case R_386_TLS_IE:
902 case R_386_TLS_GOTIE:
13ae64f3
JJ		 903 if (info->shared)
904 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 905 /* Fall through */
906
252b5132 907 case R_386_GOT32:
13ae64f3 908 case R_386_TLS_GD:
252b5132 909 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 910 {
911 int tls_type, old_tls_type;
912
913 switch (r_type)
914 {
915 default:
916 case R_386_GOT32: tls_type = GOT_NORMAL; break;
917 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
37e55690
JJ		 918 case R_386_TLS_IE_32:
919 if (ELF32_R_TYPE (rel->r_info) == r_type)
920 tls_type = GOT_TLS_IE_NEG;
921 else
922 /* If this is a GD->IE transition, we may use either of
923 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
924 tls_type = GOT_TLS_IE;
925 break;
926 case R_386_TLS_IE:
927 case R_386_TLS_GOTIE:
928 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 929 }
930
931 if (h != NULL)
932 {
933 h->got.refcount += 1;
934 old_tls_type = elf_i386_hash_entry(h)->tls_type;
935 }
936 else
937 {
938 bfd_signed_vma *local_got_refcounts;
939
940 /* This is a global offset table entry for a local symbol. */
941 local_got_refcounts = elf_local_got_refcounts (abfd);
942 if (local_got_refcounts == NULL)
943 {
944 bfd_size_type size;
945
946 size = symtab_hdr->sh_info;
947 size *= (sizeof (bfd_signed_vma) + sizeof(char));
55fd94b0 948 local_got_refcounts = bfd_zalloc (abfd, size);
13ae64f3 949 if (local_got_refcounts == NULL)
b34976b6 950 return FALSE;
13ae64f3
JJ		 951 elf_local_got_refcounts (abfd) = local_got_refcounts;
952 elf_i386_local_got_tls_type (abfd)
953 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
954 }
955 local_got_refcounts[r_symndx] += 1;
956 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
957 }
958
37e55690
JJ		 959 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
960 tls_type |= old_tls_type;
13ae64f3
JJ		 961 /* If a TLS symbol is accessed using IE at least once,
962 there is no point to use dynamic model for it. */
37e55690
JJ		 963 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
964 && (old_tls_type != GOT_TLS_GD
965 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 966 {
37e55690
JJ		 967 if ((old_tls_type & GOT_TLS_IE) && tls_type == GOT_TLS_GD)
968 tls_type = old_tls_type;
13ae64f3
JJ		 969 else
970 {
971 (*_bfd_error_handler)
55fd94b0
AM		 972 (_("%s: `%s' accessed both as normal and "
973 "thread local symbol"),
37e55690
JJ		 974 bfd_archive_filename (abfd),
975 h ? h->root.root.string : "<local>");
b34976b6 976 return FALSE;
13ae64f3
JJ		 977 }
978 }
979
980 if (old_tls_type != tls_type)
981 {
982 if (h != NULL)
983 elf_i386_hash_entry (h)->tls_type = tls_type;
984 else
985 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
986 }
987 }
0ac8d2ca
AM		 988 /* Fall through */
989
990 case R_386_GOTOFF:
991 case R_386_GOTPC:
13ae64f3 992 create_got:
0ac8d2ca
AM		 993 if (htab->sgot == NULL)
994 {
995 if (htab->elf.dynobj == NULL)
996 htab->elf.dynobj = abfd;
997 if (!create_got_section (htab->elf.dynobj, info))
b34976b6 998 return FALSE;
0ac8d2ca 999 }
37e55690
JJ		 1000 if (r_type != R_386_TLS_IE)
1001 break;
1002 /* Fall through */
252b5132 1003
37e55690
JJ		 1004 case R_386_TLS_LE_32:
1005 case R_386_TLS_LE:
1006 if (!info->shared)
1007 break;
bffbf940 1008 info->flags |= DF_STATIC_TLS;
b34976b6 1009 /* Fall through */
252b5132
RH		 1010
1011 case R_386_32:
1012 case R_386_PC32:
12d0ee4a 1013 if (h != NULL && !info->shared)
6725bdbf 1014 {
12d0ee4a 1015 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1016 need a copy reloc. We can't check reliably at this
1017 stage whether the section is read-only, as input
1018 sections have not yet been mapped to output sections.
1019 Tentatively set the flag for now, and correct in
1020 adjust_dynamic_symbol. */
1021 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
12d0ee4a
AM		 1022
1023 /* We may need a .plt entry if the function this reloc
1024 refers to is in a shared lib. */
51b64d56 1025 h->plt.refcount += 1;
c6585bbb
JJ		 1026 if (r_type != R_386_PC32)
1027 h->elf_link_hash_flags |= ELF_LINK_POINTER_EQUALITY_NEEDED;
6725bdbf 1028 }
7843f00e 1029
252b5132 1030 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1031 against a global symbol, or a non PC relative reloc
1032 against a local symbol, then we need to copy the reloc
1033 into the shared library. However, if we are linking with
1034 -Bsymbolic, we do not need to copy a reloc against a
1035 global symbol which is defined in an object we are
1036 including in the link (i.e., DEF_REGULAR is set). At
1037 this point we have not seen all the input files, so it is
1038 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1039 later (it is never cleared). In case of a weak definition,
1040 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1041 a shared library. We account for that possibility below by
1f655a09
L		 1042 storing information in the relocs_copied field of the hash
1043 table entry. A similar situation occurs when creating
1044 shared libraries and symbol visibility changes render the
12d0ee4a 1045 symbol local.
56882138 1046
12d0ee4a
AM		 1047 If on the other hand, we are creating an executable, we
1048 may need to keep relocations for symbols satisfied by a
1049 dynamic library if we manage to avoid copy relocs for the
1050 symbol. */
1051 if ((info->shared
1052 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1053 && (r_type != R_386_PC32
12d0ee4a
AM		 1054 || (h != NULL
1055 && (! info->symbolic
1056 || h->root.type == bfd_link_hash_defweak
1057 || (h->elf_link_hash_flags
1058 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
a23b6845
AM		 1059 || (ELIMINATE_COPY_RELOCS
1060 && !info->shared
12d0ee4a
AM		 1061 && (sec->flags & SEC_ALLOC) != 0
1062 && h != NULL
12d0ee4a
AM		 1063 && (h->root.type == bfd_link_hash_defweak
1064 || (h->elf_link_hash_flags
1065 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
252b5132 1066 {
ec338859
AM		 1067 struct elf_i386_dyn_relocs *p;
1068 struct elf_i386_dyn_relocs **head;
1069
12d0ee4a
AM		 1070 /* We must copy these reloc types into the output file.
1071 Create a reloc section in dynobj and make room for
1072 this reloc. */
252b5132
RH		 1073 if (sreloc == NULL)
1074 {
1075 const char *name;
0ac8d2ca 1076 bfd *dynobj;
e92d460e
AM		 1077 unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
1078 unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name;
252b5132 1079
e92d460e 1080 name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
252b5132 1081 if (name == NULL)
b34976b6 1082 return FALSE;
252b5132 1083
c8492176
L		 1084 if (strncmp (name, ".rel", 4) != 0
1085 || strcmp (bfd_get_section_name (abfd, sec),
1086 name + 4) != 0)
1087 {
0c715baa
AM		 1088 (*_bfd_error_handler)
1089 (_("%s: bad relocation section name `%s\'"),
1090 bfd_archive_filename (abfd), name);
f5f31454 1091 }
252b5132 1092
0ac8d2ca
AM		 1093 if (htab->elf.dynobj == NULL)
1094 htab->elf.dynobj = abfd;
1095
1096 dynobj = htab->elf.dynobj;
252b5132
RH		 1097 sreloc = bfd_get_section_by_name (dynobj, name);
1098 if (sreloc == NULL)
1099 {
1100 flagword flags;
1101
1102 sreloc = bfd_make_section (dynobj, name);
1103 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1104 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1105 if ((sec->flags & SEC_ALLOC) != 0)
1106 flags |= SEC_ALLOC | SEC_LOAD;
1107 if (sreloc == NULL
1108 || ! bfd_set_section_flags (dynobj, sreloc, flags)
1109 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
b34976b6 1110 return FALSE;
252b5132 1111 }
0c715baa 1112 elf_section_data (sec)->sreloc = sreloc;
252b5132
RH		 1113 }
1114
0c715baa
AM		 1115 /* If this is a global symbol, we count the number of
1116 relocations we need for this symbol. */
1117 if (h != NULL)
252b5132 1118 {
ec338859 1119 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
0c715baa
AM		 1120 }
1121 else
1122 {
ec338859
AM		 1123 /* Track dynamic relocs needed for local syms too.
1124 We really need local syms available to do this
1125 easily. Oh well. */
1126
1127 asection *s;
1128 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1129 sec, r_symndx);
1130 if (s == NULL)
b34976b6 1131 return FALSE;
ec338859
AM		 1132
1133 head = ((struct elf_i386_dyn_relocs **)
1134 &elf_section_data (s)->local_dynrel);
1135 }
1136
1137 p = *head;
1138 if (p == NULL || p->sec != sec)
1139 {
1140 bfd_size_type amt = sizeof *p;
55fd94b0 1141 p = bfd_alloc (htab->elf.dynobj, amt);
ec338859 1142 if (p == NULL)
b34976b6 1143 return FALSE;
ec338859
AM		 1144 p->next = *head;
1145 *head = p;
1146 p->sec = sec;
1147 p->count = 0;
1148 p->pc_count = 0;
252b5132 1149 }
ec338859
AM		 1150
1151 p->count += 1;
13ae64f3 1152 if (r_type == R_386_PC32)
ec338859 1153 p->pc_count += 1;
252b5132 1154 }
252b5132
RH		 1155 break;
1156
1157 /* This relocation describes the C++ object vtable hierarchy.
1158 Reconstruct it for later use during GC. */
1159 case R_386_GNU_VTINHERIT:
1160 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1161 return FALSE;
252b5132
RH		 1162 break;
1163
1164 /* This relocation describes which C++ vtable entries are actually
1165 used. Record for later use during GC. */
1166 case R_386_GNU_VTENTRY:
1167 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset))
b34976b6 1168 return FALSE;
252b5132
RH		 1169 break;
1170
1171 default:
1172 break;
1173 }
1174 }
1175
b34976b6 1176 return TRUE;
252b5132
RH		 1177}
1178
1179/* Return the section that should be marked against GC for a given
1180 relocation. */
1181
1182static asection *
55fd94b0
AM		 1183elf_i386_gc_mark_hook (asection *sec,
1184 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1185 Elf_Internal_Rela *rel,
1186 struct elf_link_hash_entry *h,
1187 Elf_Internal_Sym *sym)
252b5132
RH		 1188{
1189 if (h != NULL)
1190 {
1191 switch (ELF32_R_TYPE (rel->r_info))
1192 {
1193 case R_386_GNU_VTINHERIT:
1194 case R_386_GNU_VTENTRY:
1195 break;
1196
1197 default:
1198 switch (h->root.type)
1199 {
1200 case bfd_link_hash_defined:
1201 case bfd_link_hash_defweak:
1202 return h->root.u.def.section;
1203
1204 case bfd_link_hash_common:
1205 return h->root.u.c.p->section;
1206
1207 default:
1208 break;
1209 }
1210 }
1211 }
1212 else
1e2f5b6e 1213 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
252b5132
RH		 1214
1215 return NULL;
1216}
1217
1218/* Update the got entry reference counts for the section being removed. */
1219
b34976b6 1220static bfd_boolean
55fd94b0
AM		 1221elf_i386_gc_sweep_hook (bfd *abfd,
1222 struct bfd_link_info *info,
1223 asection *sec,
1224 const Elf_Internal_Rela *relocs)
252b5132 1225{
dd5724d5
AM		 1226 Elf_Internal_Shdr *symtab_hdr;
1227 struct elf_link_hash_entry **sym_hashes;
1228 bfd_signed_vma *local_got_refcounts;
1229 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1230
ec338859 1231 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1232
6725bdbf
AM		 1233 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1234 sym_hashes = elf_sym_hashes (abfd);
1235 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1236
1237 relend = relocs + sec->reloc_count;
1238 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1239 {
1240 unsigned long r_symndx;
1241 unsigned int r_type;
1242 struct elf_link_hash_entry *h = NULL;
37e55690 1243
26e41594
AM		 1244 r_symndx = ELF32_R_SYM (rel->r_info);
1245 if (r_symndx >= symtab_hdr->sh_info)
1246 {
1247 struct elf_i386_link_hash_entry *eh;
1248 struct elf_i386_dyn_relocs **pp;
1249 struct elf_i386_dyn_relocs *p;
dd5724d5 1250
26e41594
AM		 1251 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1252 eh = (struct elf_i386_link_hash_entry *) h;
0c715baa 1253
26e41594
AM		 1254 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1255 if (p->sec == sec)
1256 {
1257 /* Everything must go for SEC. */
1258 *pp = p->next;
1259 break;
1260 }
1261 }
0c715baa 1262
26e41594
AM		 1263 r_type = ELF32_R_TYPE (rel->r_info);
1264 r_type = elf_i386_tls_transition (info, r_type, h != NULL);
1265 switch (r_type)
1266 {
1267 case R_386_TLS_LDM:
1268 if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0)
1269 elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1;
1270 break;
0c715baa 1271
26e41594
AM		 1272 case R_386_TLS_GD:
1273 case R_386_TLS_IE_32:
1274 case R_386_TLS_IE:
1275 case R_386_TLS_GOTIE:
1276 case R_386_GOT32:
1277 if (h != NULL)
1278 {
1279 if (h->got.refcount > 0)
1280 h->got.refcount -= 1;
1281 }
1282 else if (local_got_refcounts != NULL)
1283 {
1284 if (local_got_refcounts[r_symndx] > 0)
1285 local_got_refcounts[r_symndx] -= 1;
1286 }
1287 break;
0c715baa 1288
26e41594
AM		 1289 case R_386_32:
1290 case R_386_PC32:
1291 if (info->shared)
1292 break;
1293 /* Fall through */
6725bdbf 1294
26e41594
AM		 1295 case R_386_PLT32:
1296 if (h != NULL)
1297 {
1298 if (h->plt.refcount > 0)
1299 h->plt.refcount -= 1;
1300 }
1301 break;
dd5724d5 1302
26e41594
AM		 1303 default:
1304 break;
1305 }
1306 }
252b5132 1307
b34976b6 1308 return TRUE;
252b5132
RH		 1309}
1310
1311/* Adjust a symbol defined by a dynamic object and referenced by a
1312 regular object. The current definition is in some section of the
1313 dynamic object, but we're not including those sections. We have to
1314 change the definition to something the rest of the link can
1315 understand. */
1316
b34976b6 1317static bfd_boolean
55fd94b0
AM		 1318elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
1319 struct elf_link_hash_entry *h)
252b5132 1320{
6725bdbf 1321 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1322 asection *s;
1323 unsigned int power_of_two;
1324
252b5132
RH		 1325 /* If this is a function, put it in the procedure linkage table. We
1326 will fill in the contents of the procedure linkage table later,
1327 when we know the address of the .got section. */
1328 if (h->type == STT_FUNC
1329 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
1330 {
6725bdbf 1331 if (h->plt.refcount <= 0
9c7a29a3
AM		 1332 || SYMBOL_CALLS_LOCAL (info, h)
1333 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1334 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 1335 {
1336 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 1337 file, but the symbol was never referred to by a dynamic
1338 object, or if all references were garbage collected. In
1339 such a case, we don't actually need to build a procedure
1340 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 1341 h->plt.offset = (bfd_vma) -1;
dd5724d5 1342 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
252b5132
RH		 1343 }
1344
b34976b6 1345 return TRUE;
252b5132 1346 }
6725bdbf
AM		 1347 else
1348 /* It's possible that we incorrectly decided a .plt reloc was
1349 needed for an R_386_PC32 reloc to a non-function sym in
1350 check_relocs. We can't decide accurately between function and
1351 non-function syms in check-relocs; Objects loaded later in
1352 the link may change h->type. So fix it now. */
bbd7ec4a 1353 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 1354
1355 /* If this is a weak symbol, and there is a real definition, the
1356 processor independent code will have arranged for us to see the
1357 real definition first, and we can just use the same value. */
1358 if (h->weakdef != NULL)
1359 {
1360 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1361 || h->weakdef->root.type == bfd_link_hash_defweak);
1362 h->root.u.def.section = h->weakdef->root.u.def.section;
1363 h->root.u.def.value = h->weakdef->root.u.def.value;
a23b6845
AM		 1364 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1365 h->elf_link_hash_flags
1366 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
1367 | (h->weakdef->elf_link_hash_flags & ELF_LINK_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. */
1383 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
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 {
1389 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
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 {
1410 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
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 {
0ac8d2ca 1432 htab->srelbss->_raw_size += sizeof (Elf32_External_Rel);
252b5132
RH		 1433 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
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
AM		 1443 s = htab->sdynbss;
1444 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
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;
1453 h->root.u.def.value = s->_raw_size;
1454
1455 /* Increment the section size to make room for the symbol. */
1456 s->_raw_size += h->size;
1457
b34976b6 1458 return TRUE;
252b5132
RH		 1459}
1460
6725bdbf
AM		 1461/* This is the condition under which elf_i386_finish_dynamic_symbol
1462 will be called from elflink.h. If elflink.h doesn't call our
1463 finish_dynamic_symbol routine, we'll need to do something about
1464 initializing any .plt and .got entries in elf_i386_relocate_section. */
26e41594 1465#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
6725bdbf 1466 ((DYN) \
26e41594 1467 && ((SHARED) \
6725bdbf
AM		 1468 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1469 && ((H)->dynindx != -1 \
1470 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1471
1472/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 1473 dynamic relocs. */
6725bdbf 1474
b34976b6 1475static bfd_boolean
55fd94b0 1476allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 1477{
1478 struct bfd_link_info *info;
1479 struct elf_i386_link_hash_table *htab;
5a15f56f 1480 struct elf_i386_link_hash_entry *eh;
0c715baa 1481 struct elf_i386_dyn_relocs *p;
6725bdbf 1482
e92d460e 1483 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1484 return TRUE;
6725bdbf 1485
e92d460e
AM		 1486 if (h->root.type == bfd_link_hash_warning)
1487 /* When warning symbols are created, they **replace** the "real"
1488 entry in the hash table, thus we never get to see the real
1489 symbol in a hash traversal. So look at it now. */
1490 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1491
6725bdbf
AM		 1492 info = (struct bfd_link_info *) inf;
1493 htab = elf_i386_hash_table (info);
1494
ebe50bae 1495 if (htab->elf.dynamic_sections_created
9c7a29a3 1496 && h->plt.refcount > 0)
6725bdbf 1497 {
5a15f56f
AM		 1498 /* Make sure this symbol is output as a dynamic symbol.
1499 Undefined weak syms won't yet be marked as dynamic. */
1500 if (h->dynindx == -1
1501 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1502 {
1503 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
b34976b6 1504 return FALSE;
5a15f56f
AM		 1505 }
1506
4e795f50
AM		 1507 if (info->shared
1508 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 1509 {
0ac8d2ca 1510 asection *s = htab->splt;
6725bdbf 1511
ced53ee5
AM		 1512 /* If this is the first .plt entry, make room for the special
1513 first entry. */
1514 if (s->_raw_size == 0)
1515 s->_raw_size += PLT_ENTRY_SIZE;
6725bdbf 1516
ced53ee5 1517 h->plt.offset = s->_raw_size;
6725bdbf 1518
ced53ee5
AM		 1519 /* If this symbol is not defined in a regular file, and we are
1520 not generating a shared library, then set the symbol to this
1521 location in the .plt. This is required to make function
1522 pointers compare as equal between the normal executable and
1523 the shared library. */
1524 if (! info->shared
1525 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1526 {
1527 h->root.u.def.section = s;
1528 h->root.u.def.value = h->plt.offset;
1529 }
6725bdbf 1530
ced53ee5
AM		 1531 /* Make room for this entry. */
1532 s->_raw_size += PLT_ENTRY_SIZE;
6725bdbf 1533
ced53ee5
AM		 1534 /* We also need to make an entry in the .got.plt section, which
1535 will be placed in the .got section by the linker script. */
0ac8d2ca 1536 htab->sgotplt->_raw_size += 4;
6725bdbf 1537
6725bdbf 1538 /* We also need to make an entry in the .rel.plt section. */
0ac8d2ca 1539 htab->srelplt->_raw_size += sizeof (Elf32_External_Rel);
6725bdbf 1540 }
ced53ee5
AM		 1541 else
1542 {
51b64d56 1543 h->plt.offset = (bfd_vma) -1;
ced53ee5
AM		 1544 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1545 }
6725bdbf
AM		 1546 }
1547 else
1548 {
51b64d56 1549 h->plt.offset = (bfd_vma) -1;
6725bdbf
AM		 1550 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1551 }
1552
37e55690 1553 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 1554 make it a R_386_TLS_LE_32 requiring no TLS entry. */
1555 if (h->got.refcount > 0
1556 && !info->shared
1557 && h->dynindx == -1
37e55690 1558 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 1559 h->got.offset = (bfd_vma) -1;
13ae64f3 1560 else if (h->got.refcount > 0)
6725bdbf 1561 {
0ac8d2ca 1562 asection *s;
b34976b6 1563 bfd_boolean dyn;
13ae64f3 1564 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 1565
5a15f56f
AM		 1566 /* Make sure this symbol is output as a dynamic symbol.
1567 Undefined weak syms won't yet be marked as dynamic. */
1568 if (h->dynindx == -1
1569 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1570 {
1571 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
b34976b6 1572 return FALSE;
5a15f56f
AM		 1573 }
1574
6725bdbf
AM		 1575 s = htab->sgot;
1576 h->got.offset = s->_raw_size;
1577 s->_raw_size += 4;
13ae64f3 1578 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
37e55690 1579 if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE_BOTH)
13ae64f3 1580 s->_raw_size += 4;
ebe50bae 1581 dyn = htab->elf.dynamic_sections_created;
13ae64f3 1582 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 1583 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
1584 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
1585 need two), R_386_TLS_GD needs one if local symbol and two if
1586 global. */
1587 if (tls_type == GOT_TLS_IE_BOTH)
1588 htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel);
1589 else if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1590 || (tls_type & GOT_TLS_IE))
13ae64f3
JJ		 1591 htab->srelgot->_raw_size += sizeof (Elf32_External_Rel);
1592 else if (tls_type == GOT_TLS_GD)
1593 htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel);
ef5aade5
L		 1594 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1595 || h->root.type != bfd_link_hash_undefweak)
1596 && (info->shared
1597 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6725bdbf
AM		 1598 htab->srelgot->_raw_size += sizeof (Elf32_External_Rel);
1599 }
1600 else
51b64d56 1601 h->got.offset = (bfd_vma) -1;
6725bdbf 1602
5a15f56f
AM		 1603 eh = (struct elf_i386_link_hash_entry *) h;
1604 if (eh->dyn_relocs == NULL)
b34976b6 1605 return TRUE;
5a15f56f 1606
0c715baa
AM		 1607 /* In the shared -Bsymbolic case, discard space allocated for
1608 dynamic pc-relative relocs against symbols which turn out to be
1609 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 1610 space for pc-relative relocs that have become local due to symbol
1611 visibility changes. */
0c715baa
AM		 1612
1613 if (info->shared)
5a15f56f 1614 {
09695f56
AM		 1615 /* The only reloc that uses pc_count is R_386_PC32, which will
1616 appear on a call or on something like ".long foo - .". We
1617 want calls to protected symbols to resolve directly to the
1618 function rather than going via the plt. If people want
1619 function pointer comparisons to work as expected then they
1620 should avoid writing assembly like ".long foo - .". */
1621 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 1622 {
0c715baa
AM		 1623 struct elf_i386_dyn_relocs **pp;
1624
1625 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1626 {
1627 p->count -= p->pc_count;
1628 p->pc_count = 0;
1629 if (p->count == 0)
1630 *pp = p->next;
1631 else
1632 pp = &p->next;
1633 }
5a15f56f 1634 }
4e795f50
AM		 1635
1636 /* Also discard relocs on undefined weak syms with non-default
1637 visibility. */
1638 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1639 && h->root.type == bfd_link_hash_undefweak)
1640 eh->dyn_relocs = NULL;
0c715baa 1641 }
a23b6845 1642 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 1643 {
1644 /* For the non-shared case, discard space for relocs against
1645 symbols which turn out to need copy relocs or are not
1646 dynamic. */
1647
1648 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
1649 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1650 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
ebe50bae 1651 || (htab->elf.dynamic_sections_created
0c715baa
AM		 1652 && (h->root.type == bfd_link_hash_undefweak
1653 || h->root.type == bfd_link_hash_undefined))))
1654 {
1655 /* Make sure this symbol is output as a dynamic symbol.
1656 Undefined weak syms won't yet be marked as dynamic. */
1657 if (h->dynindx == -1
1658 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
1659 {
1660 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
b34976b6 1661 return FALSE;
0c715baa 1662 }
5a15f56f 1663
0c715baa
AM		 1664 /* If that succeeded, we know we'll be keeping all the
1665 relocs. */
1666 if (h->dynindx != -1)
1667 goto keep;
1668 }
1669
1670 eh->dyn_relocs = NULL;
1671
ec338859 1672 keep: ;
5a15f56f
AM		 1673 }
1674
0c715baa
AM		 1675 /* Finally, allocate space. */
1676 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 1677 {
0c715baa
AM		 1678 asection *sreloc = elf_section_data (p->sec)->sreloc;
1679 sreloc->_raw_size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 1680 }
1681
b34976b6 1682 return TRUE;
6725bdbf
AM		 1683}
1684
0c715baa
AM		 1685/* Find any dynamic relocs that apply to read-only sections. */
1686
b34976b6 1687static bfd_boolean
55fd94b0 1688readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 1689{
1690 struct elf_i386_link_hash_entry *eh;
1691 struct elf_i386_dyn_relocs *p;
1692
e92d460e
AM		 1693 if (h->root.type == bfd_link_hash_warning)
1694 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1695
0c715baa
AM		 1696 eh = (struct elf_i386_link_hash_entry *) h;
1697 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1698 {
1699 asection *s = p->sec->output_section;
1700
1701 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1702 {
1703 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1704
1705 info->flags |= DF_TEXTREL;
1706
1707 /* Not an error, just cut short the traversal. */
b34976b6 1708 return FALSE;
0c715baa
AM		 1709 }
1710 }
b34976b6 1711 return TRUE;
0c715baa
AM		 1712}
1713
252b5132
RH		 1714/* Set the sizes of the dynamic sections. */
1715
b34976b6 1716static bfd_boolean
55fd94b0
AM		 1717elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1718 struct bfd_link_info *info)
252b5132 1719{
6725bdbf 1720 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1721 bfd *dynobj;
1722 asection *s;
b34976b6 1723 bfd_boolean relocs;
0c715baa 1724 bfd *ibfd;
252b5132 1725
6725bdbf 1726 htab = elf_i386_hash_table (info);
ebe50bae 1727 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 1728 if (dynobj == NULL)
1729 abort ();
252b5132 1730
ebe50bae 1731 if (htab->elf.dynamic_sections_created)
252b5132
RH		 1732 {
1733 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 1734 if (info->executable)
252b5132
RH		 1735 {
1736 s = bfd_get_section_by_name (dynobj, ".interp");
ffb2e45b
AM		 1737 if (s == NULL)
1738 abort ();
252b5132
RH		 1739 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1740 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1741 }
161d71a6 1742 }
6725bdbf 1743
0c715baa
AM		 1744 /* Set up .got offsets for local syms, and space for local dynamic
1745 relocs. */
1746 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 1747 {
1748 bfd_signed_vma *local_got;
1749 bfd_signed_vma *end_local_got;
13ae64f3 1750 char *local_tls_type;
161d71a6
L		 1751 bfd_size_type locsymcount;
1752 Elf_Internal_Shdr *symtab_hdr;
1753 asection *srel;
6725bdbf 1754
0c715baa 1755 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
161d71a6 1756 continue;
6725bdbf 1757
0c715baa
AM		 1758 for (s = ibfd->sections; s != NULL; s = s->next)
1759 {
ec338859 1760 struct elf_i386_dyn_relocs *p;
0c715baa 1761
ec338859
AM		 1762 for (p = *((struct elf_i386_dyn_relocs **)
1763 &elf_section_data (s)->local_dynrel);
1764 p != NULL;
1765 p = p->next)
0c715baa 1766 {
ec338859
AM		 1767 if (!bfd_is_abs_section (p->sec)
1768 && bfd_is_abs_section (p->sec->output_section))
1769 {
1770 /* Input section has been discarded, either because
1771 it is a copy of a linkonce section or due to
1772 linker script /DISCARD/, so we'll be discarding
1773 the relocs too. */
1774 }
248866a8 1775 else if (p->count != 0)
ec338859
AM		 1776 {
1777 srel = elf_section_data (p->sec)->sreloc;
1778 srel->_raw_size += p->count * sizeof (Elf32_External_Rel);
248866a8
AM		 1779 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1780 info->flags |= DF_TEXTREL;
ec338859 1781 }
0c715baa
AM		 1782 }
1783 }
1784
1785 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 1786 if (!local_got)
1787 continue;
6725bdbf 1788
0c715baa 1789 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
161d71a6
L		 1790 locsymcount = symtab_hdr->sh_info;
1791 end_local_got = local_got + locsymcount;
13ae64f3 1792 local_tls_type = elf_i386_local_got_tls_type (ibfd);
161d71a6
L		 1793 s = htab->sgot;
1794 srel = htab->srelgot;
13ae64f3 1795 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
161d71a6
L		 1796 {
1797 if (*local_got > 0)
6725bdbf 1798 {
161d71a6
L		 1799 *local_got = s->_raw_size;
1800 s->_raw_size += 4;
37e55690
JJ		 1801 if (*local_tls_type == GOT_TLS_GD
1802 || *local_tls_type == GOT_TLS_IE_BOTH)
13ae64f3
JJ		 1803 s->_raw_size += 4;
1804 if (info->shared
1805 || *local_tls_type == GOT_TLS_GD
37e55690
JJ		 1806 || (*local_tls_type & GOT_TLS_IE))
1807 {
1808 if (*local_tls_type == GOT_TLS_IE_BOTH)
1809 srel->_raw_size += 2 * sizeof (Elf32_External_Rel);
1810 else
1811 srel->_raw_size += sizeof (Elf32_External_Rel);
1812 }
6725bdbf 1813 }
161d71a6
L		 1814 else
1815 *local_got = (bfd_vma) -1;
6725bdbf 1816 }
252b5132 1817 }
6725bdbf 1818
13ae64f3
JJ		 1819 if (htab->tls_ldm_got.refcount > 0)
1820 {
1821 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
1822 relocs. */
1823 htab->tls_ldm_got.offset = htab->sgot->_raw_size;
1824 htab->sgot->_raw_size += 8;
1825 htab->srelgot->_raw_size += sizeof (Elf32_External_Rel);
1826 }
1827 else
1828 htab->tls_ldm_got.offset = -1;
1829
0c715baa
AM		 1830 /* Allocate global sym .plt and .got entries, and space for global
1831 sym dynamic relocs. */
ebe50bae 1832 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
252b5132 1833
5a15f56f
AM		 1834 /* We now have determined the sizes of the various dynamic sections.
1835 Allocate memory for them. */
b34976b6 1836 relocs = FALSE;
252b5132
RH		 1837 for (s = dynobj->sections; s != NULL; s = s->next)
1838 {
252b5132
RH		 1839 if ((s->flags & SEC_LINKER_CREATED) == 0)
1840 continue;
1841
6725bdbf
AM		 1842 if (s == htab->splt
1843 || s == htab->sgot
1844 || s == htab->sgotplt)
252b5132 1845 {
6725bdbf
AM		 1846 /* Strip this section if we don't need it; see the
1847 comment below. */
252b5132 1848 }
6725bdbf 1849 else if (strncmp (bfd_get_section_name (dynobj, s), ".rel", 4) == 0)
252b5132 1850 {
0ac8d2ca 1851 if (s->_raw_size != 0 && s != htab->srelplt)
b34976b6 1852 relocs = TRUE;
252b5132 1853
0ac8d2ca
AM		 1854 /* We use the reloc_count field as a counter if we need
1855 to copy relocs into the output file. */
1856 s->reloc_count = 0;
252b5132 1857 }
6725bdbf 1858 else
252b5132
RH		 1859 {
1860 /* It's not one of our sections, so don't allocate space. */
1861 continue;
1862 }
1863
6725bdbf 1864 if (s->_raw_size == 0)
252b5132 1865 {
0ac8d2ca
AM		 1866 /* If we don't need this section, strip it from the
1867 output file. This is mostly to handle .rel.bss and
1868 .rel.plt. We must create both sections in
1869 create_dynamic_sections, because they must be created
1870 before the linker maps input sections to output
1871 sections. The linker does that before
1872 adjust_dynamic_symbol is called, and it is that
1873 function which decides whether anything needs to go
1874 into these sections. */
1875
7f8d5fc9 1876 _bfd_strip_section_from_output (info, s);
252b5132
RH		 1877 continue;
1878 }
1879
f69da49f
AM		 1880 /* Allocate memory for the section contents. We use bfd_zalloc
1881 here in case unused entries are not reclaimed before the
1882 section's contents are written out. This should not happen,
1883 but this way if it does, we get a R_386_NONE reloc instead
1884 of garbage. */
55fd94b0 1885 s->contents = bfd_zalloc (dynobj, s->_raw_size);
6725bdbf 1886 if (s->contents == NULL)
b34976b6 1887 return FALSE;
252b5132
RH		 1888 }
1889
ebe50bae 1890 if (htab->elf.dynamic_sections_created)
252b5132
RH		 1891 {
1892 /* Add some entries to the .dynamic section. We fill in the
1893 values later, in elf_i386_finish_dynamic_sections, but we
1894 must add the entries now so that we get the correct size for
1895 the .dynamic section. The DT_DEBUG entry is filled in by the
1896 dynamic linker and used by the debugger. */
dc810e39 1897#define add_dynamic_entry(TAG, VAL) \
55fd94b0 1898 bfd_elf32_add_dynamic_entry (info, (TAG), (VAL))
dc810e39 1899
36af4a4e 1900 if (info->executable)
252b5132 1901 {
dc810e39 1902 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 1903 return FALSE;
252b5132
RH		 1904 }
1905
6725bdbf 1906 if (htab->splt->_raw_size != 0)
252b5132 1907 {
dc810e39
AM		 1908 if (!add_dynamic_entry (DT_PLTGOT, 0)
1909 || !add_dynamic_entry (DT_PLTRELSZ, 0)
1910 || !add_dynamic_entry (DT_PLTREL, DT_REL)
1911 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 1912 return FALSE;
252b5132
RH		 1913 }
1914
1915 if (relocs)
1916 {
dc810e39
AM		 1917 if (!add_dynamic_entry (DT_REL, 0)
1918 || !add_dynamic_entry (DT_RELSZ, 0)
1919 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 1920 return FALSE;
252b5132 1921
0c715baa
AM		 1922 /* If any dynamic relocs apply to a read-only section,
1923 then we need a DT_TEXTREL entry. */
248866a8
AM		 1924 if ((info->flags & DF_TEXTREL) == 0)
1925 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
1926 (PTR) info);
0c715baa
AM		 1927
1928 if ((info->flags & DF_TEXTREL) != 0)
1929 {
1930 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 1931 return FALSE;
0c715baa 1932 }
252b5132
RH		 1933 }
1934 }
dc810e39 1935#undef add_dynamic_entry
252b5132 1936
b34976b6 1937 return TRUE;
252b5132
RH		 1938}
1939
38701953
AM		 1940/* Set the correct type for an x86 ELF section. We do this by the
1941 section name, which is a hack, but ought to work. */
1942
b34976b6 1943static bfd_boolean
55fd94b0
AM		 1944elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1945 Elf_Internal_Shdr *hdr,
1946 asection *sec)
38701953
AM		 1947{
1948 register const char *name;
1949
1950 name = bfd_get_section_name (abfd, sec);
1951
1952 /* This is an ugly, but unfortunately necessary hack that is
1953 needed when producing EFI binaries on x86. It tells
1954 elf.c:elf_fake_sections() not to consider ".reloc" as a section
1955 containing ELF relocation info. We need this hack in order to
1956 be able to generate ELF binaries that can be translated into
1957 EFI applications (which are essentially COFF objects). Those
1958 files contain a COFF ".reloc" section inside an ELFNN object,
1959 which would normally cause BFD to segfault because it would
1960 attempt to interpret this section as containing relocation
1961 entries for section "oc". With this hack enabled, ".reloc"
1962 will be treated as a normal data section, which will avoid the
1963 segfault. However, you won't be able to create an ELFNN binary
1964 with a section named "oc" that needs relocations, but that's
1965 the kind of ugly side-effects you get when detecting section
1966 types based on their names... In practice, this limitation is
1967 unlikely to bite. */
1968 if (strcmp (name, ".reloc") == 0)
1969 hdr->sh_type = SHT_PROGBITS;
1970
b34976b6 1971 return TRUE;
38701953
AM		 1972}
1973
13ae64f3
JJ		 1974/* Return the base VMA address which should be subtracted from real addresses
1975 when resolving @dtpoff relocation.
1976 This is PT_TLS segment p_vaddr. */
1977
1978static bfd_vma
55fd94b0 1979dtpoff_base (struct bfd_link_info *info)
13ae64f3 1980{
e1918d23
AM		 1981 /* If tls_sec is NULL, we should have signalled an error already. */
1982 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 1983 return 0;
e1918d23 1984 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 1985}
1986
1987/* Return the relocation value for @tpoff relocation
1988 if STT_TLS virtual address is ADDRESS. */
1989
1990static bfd_vma
55fd94b0 1991tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 1992{
e1918d23 1993 struct elf_link_hash_table *htab = elf_hash_table (info);
13ae64f3 1994
e1918d23
AM		 1995 /* If tls_sec is NULL, we should have signalled an error already. */
1996 if (htab->tls_sec == NULL)
6a30718d 1997 return 0;
e1918d23 1998 return htab->tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 1999}
2000
252b5132
RH		 2001/* Relocate an i386 ELF section. */
2002
b34976b6 2003static bfd_boolean
55fd94b0
AM		 2004elf_i386_relocate_section (bfd *output_bfd,
2005 struct bfd_link_info *info,
2006 bfd *input_bfd,
2007 asection *input_section,
2008 bfd_byte *contents,
2009 Elf_Internal_Rela *relocs,
2010 Elf_Internal_Sym *local_syms,
2011 asection **local_sections)
252b5132 2012{
6725bdbf 2013 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2014 Elf_Internal_Shdr *symtab_hdr;
2015 struct elf_link_hash_entry **sym_hashes;
2016 bfd_vma *local_got_offsets;
252b5132
RH		 2017 Elf_Internal_Rela *rel;
2018 Elf_Internal_Rela *relend;
2019
6725bdbf 2020 htab = elf_i386_hash_table (info);
252b5132
RH		 2021 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2022 sym_hashes = elf_sym_hashes (input_bfd);
2023 local_got_offsets = elf_local_got_offsets (input_bfd);
2024
252b5132
RH		 2025 rel = relocs;
2026 relend = relocs + input_section->reloc_count;
2027 for (; rel < relend; rel++)
2028 {
13ae64f3 2029 unsigned int r_type;
252b5132
RH		 2030 reloc_howto_type *howto;
2031 unsigned long r_symndx;
2032 struct elf_link_hash_entry *h;
2033 Elf_Internal_Sym *sym;
2034 asection *sec;
ffb2e45b 2035 bfd_vma off;
252b5132 2036 bfd_vma relocation;
b34976b6 2037 bfd_boolean unresolved_reloc;
252b5132 2038 bfd_reloc_status_type r;
1b452ec6 2039 unsigned int indx;
13ae64f3 2040 int tls_type;
252b5132
RH		 2041
2042 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 2043 if (r_type == R_386_GNU_VTINHERIT
2044 || r_type == R_386_GNU_VTENTRY)
252b5132 2045 continue;
dc47f327 2046
55fd94b0 2047 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 2048 && ((indx = r_type - R_386_ext_offset) - R_386_standard
2049 >= R_386_ext - R_386_standard)
2050 && ((indx = r_type - R_386_tls_offset) - R_386_ext
2051 >= R_386_tls - R_386_ext))
252b5132
RH		 2052 {
2053 bfd_set_error (bfd_error_bad_value);
b34976b6 2054 return FALSE;
252b5132 2055 }
1b452ec6 2056 howto = elf_howto_table + indx;
252b5132
RH		 2057
2058 r_symndx = ELF32_R_SYM (rel->r_info);
2059
1049f94e 2060 if (info->relocatable)
252b5132 2061 {
4a335f3d 2062 bfd_vma val;
4a335f3d
AM		 2063 bfd_byte *where;
2064
0ac8d2ca 2065 /* This is a relocatable link. We don't have to change
252b5132
RH		 2066 anything, unless the reloc is against a section symbol,
2067 in which case we have to adjust according to where the
2068 section symbol winds up in the output section. */
4a335f3d
AM		 2069 if (r_symndx >= symtab_hdr->sh_info)
2070 continue;
2071
2072 sym = local_syms + r_symndx;
2073 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2074 continue;
2075
2076 sec = local_sections[r_symndx];
2077 val = sec->output_offset;
2078 if (val == 0)
2079 continue;
2080
2081 where = contents + rel->r_offset;
2082 switch (howto->size)
252b5132 2083 {
16a10388 2084 /* FIXME: overflow checks. */
4a335f3d 2085 case 0:
16a10388 2086 val += bfd_get_8 (input_bfd, where);
4a335f3d 2087 bfd_put_8 (input_bfd, val, where);
4a335f3d
AM		 2088 break;
2089 case 1:
16a10388 2090 val += bfd_get_16 (input_bfd, where);
4a335f3d 2091 bfd_put_16 (input_bfd, val, where);
4a335f3d
AM		 2092 break;
2093 case 2:
2094 val += bfd_get_32 (input_bfd, where);
2095 bfd_put_32 (input_bfd, val, where);
2096 break;
2097 default:
2098 abort ();
252b5132 2099 }
252b5132
RH		 2100 continue;
2101 }
2102
2103 /* This is a final link. */
2104 h = NULL;
2105 sym = NULL;
2106 sec = NULL;
b34976b6 2107 unresolved_reloc = FALSE;
252b5132
RH		 2108 if (r_symndx < symtab_hdr->sh_info)
2109 {
2110 sym = local_syms + r_symndx;
2111 sec = local_sections[r_symndx];
2112 relocation = (sec->output_section->vma
2113 + sec->output_offset
2114 + sym->st_value);
f8df10f4
JJ		 2115 if ((sec->flags & SEC_MERGE)
2116 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2117 {
2118 asection *msec;
2119 bfd_vma addend;
4a335f3d 2120 bfd_byte *where = contents + rel->r_offset;
f8df10f4 2121
4a335f3d 2122 switch (howto->size)
f8df10f4 2123 {
4a335f3d
AM		 2124 case 0:
2125 addend = bfd_get_8 (input_bfd, where);
2126 if (howto->pc_relative)
2127 {
2128 addend = (addend ^ 0x80) - 0x80;
2129 addend += 1;
2130 }
2131 break;
2132 case 1:
2133 addend = bfd_get_16 (input_bfd, where);
2134 if (howto->pc_relative)
2135 {
2136 addend = (addend ^ 0x8000) - 0x8000;
2137 addend += 2;
2138 }
2139 break;
2140 case 2:
2141 addend = bfd_get_32 (input_bfd, where);
2142 if (howto->pc_relative)
2143 {
2144 addend = (addend ^ 0x80000000) - 0x80000000;
2145 addend += 4;
2146 }
2147 break;
2148 default:
2149 abort ();
f8df10f4
JJ		 2150 }
2151
f8df10f4 2152 msec = sec;
4a335f3d
AM		 2153 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend);
2154 addend -= relocation;
f8df10f4 2155 addend += msec->output_section->vma + msec->output_offset;
4a335f3d
AM		 2156
2157 switch (howto->size)
2158 {
2159 case 0:
16a10388 2160 /* FIXME: overflow checks. */
4a335f3d
AM		 2161 if (howto->pc_relative)
2162 addend -= 1;
2163 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 2164 break;
2165 case 1:
2166 if (howto->pc_relative)
2167 addend -= 2;
2168 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 2169 break;
2170 case 2:
2171 if (howto->pc_relative)
2172 addend -= 4;
2173 bfd_put_32 (input_bfd, addend, where);
2174 break;
2175 }
f8df10f4 2176 }
252b5132
RH		 2177 }
2178 else
2179 {
560e09e9 2180 bfd_boolean warned;
ffb2e45b 2181
560e09e9 2182 RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx, symtab_hdr, relocation, sec, unresolved_reloc, info, warned);
252b5132
RH		 2183 }
2184
2185 switch (r_type)
2186 {
2187 case R_386_GOT32:
2188 /* Relocation is to the entry for this symbol in the global
2189 offset table. */
ffb2e45b
AM		 2190 if (htab->sgot == NULL)
2191 abort ();
252b5132
RH		 2192
2193 if (h != NULL)
2194 {
b34976b6 2195 bfd_boolean dyn;
252b5132
RH		 2196
2197 off = h->got.offset;
ebe50bae 2198 dyn = htab->elf.dynamic_sections_created;
26e41594 2199 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 2200 || (info->shared
586119b3 2201 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 2202 || (ELF_ST_VISIBILITY (h->other)
2203 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2204 {
2205 /* This is actually a static link, or it is a
2206 -Bsymbolic link and the symbol is defined
2207 locally, or the symbol was forced to be local
2208 because of a version file. We must initialize
2209 this entry in the global offset table. Since the
2210 offset must always be a multiple of 4, we use the
2211 least significant bit to record whether we have
2212 initialized it already.
2213
2214 When doing a dynamic link, we create a .rel.got
2215 relocation entry to initialize the value. This
2216 is done in the finish_dynamic_symbol routine. */
2217 if ((off & 1) != 0)
2218 off &= ~1;
2219 else
2220 {
2221 bfd_put_32 (output_bfd, relocation,
6725bdbf 2222 htab->sgot->contents + off);
252b5132
RH		 2223 h->got.offset |= 1;
2224 }
2225 }
8c694914 2226 else
b34976b6 2227 unresolved_reloc = FALSE;
252b5132
RH		 2228 }
2229 else
2230 {
ffb2e45b
AM		 2231 if (local_got_offsets == NULL)
2232 abort ();
252b5132
RH		 2233
2234 off = local_got_offsets[r_symndx];
2235
2236 /* The offset must always be a multiple of 4. We use
83be169b
AM		 2237 the least significant bit to record whether we have
2238 already generated the necessary reloc. */
252b5132
RH		 2239 if ((off & 1) != 0)
2240 off &= ~1;
2241 else
2242 {
6725bdbf
AM		 2243 bfd_put_32 (output_bfd, relocation,
2244 htab->sgot->contents + off);
252b5132
RH		 2245
2246 if (info->shared)
2247 {
947216bf
AM		 2248 asection *s;
2249 Elf_Internal_Rela outrel;
2250 bfd_byte *loc;
252b5132 2251
947216bf
AM		 2252 s = htab->srelgot;
2253 if (s == NULL)
ffb2e45b 2254 abort ();
252b5132 2255
6725bdbf
AM		 2256 outrel.r_offset = (htab->sgot->output_section->vma
2257 + htab->sgot->output_offset
252b5132
RH		 2258 + off);
2259 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
947216bf
AM		 2260 loc = s->contents;
2261 loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 2262 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 2263 }
2264
2265 local_got_offsets[r_symndx] |= 1;
2266 }
252b5132
RH		 2267 }
2268
ffb2e45b
AM		 2269 if (off >= (bfd_vma) -2)
2270 abort ();
2271
2272 relocation = htab->sgot->output_offset + off;
252b5132
RH		 2273 break;
2274
2275 case R_386_GOTOFF:
2276 /* Relocation is relative to the start of the global offset
2277 table. */
2278
252b5132
RH		 2279 /* Note that sgot->output_offset is not involved in this
2280 calculation. We always want the start of .got. If we
2281 defined _GLOBAL_OFFSET_TABLE in a different way, as is
2282 permitted by the ABI, we might have to change this
2283 calculation. */
6725bdbf 2284 relocation -= htab->sgot->output_section->vma;
252b5132
RH		 2285 break;
2286
2287 case R_386_GOTPC:
2288 /* Use global offset table as symbol value. */
6725bdbf 2289 relocation = htab->sgot->output_section->vma;
b34976b6 2290 unresolved_reloc = FALSE;
252b5132
RH		 2291 break;
2292
2293 case R_386_PLT32:
2294 /* Relocation is to the entry for this symbol in the
2295 procedure linkage table. */
2296
dd5724d5 2297 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 2298 without using the procedure linkage table. */
252b5132
RH		 2299 if (h == NULL)
2300 break;
2301
dd5724d5 2302 if (h->plt.offset == (bfd_vma) -1
6725bdbf 2303 || htab->splt == NULL)
252b5132
RH		 2304 {
2305 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 2306 happens when statically linking PIC code, or when
2307 using -Bsymbolic. */
252b5132
RH		 2308 break;
2309 }
2310
6725bdbf
AM		 2311 relocation = (htab->splt->output_section->vma
2312 + htab->splt->output_offset
252b5132 2313 + h->plt.offset);
b34976b6 2314 unresolved_reloc = FALSE;
252b5132
RH		 2315 break;
2316
2317 case R_386_32:
2318 case R_386_PC32:
ec338859
AM		 2319 /* r_symndx will be zero only for relocs against symbols
2320 from removed linkonce sections, or sections discarded by
2321 a linker script. */
2322 if (r_symndx == 0
2323 || (input_section->flags & SEC_ALLOC) == 0)
2324 break;
2325
12d0ee4a 2326 if ((info->shared
ef5aade5
L		 2327 && (h == NULL
2328 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2329 || h->root.type != bfd_link_hash_undefweak)
12d0ee4a 2330 && (r_type != R_386_PC32
f6c52c13 2331 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 2332 || (ELIMINATE_COPY_RELOCS
2333 && !info->shared
12d0ee4a
AM		 2334 && h != NULL
2335 && h->dynindx != -1
2336 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
56882138
AM		 2337 && (((h->elf_link_hash_flags
2338 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2339 && (h->elf_link_hash_flags
2340 & ELF_LINK_HASH_DEF_REGULAR) == 0)
28d0b90e
AM		 2341 || h->root.type == bfd_link_hash_undefweak
2342 || h->root.type == bfd_link_hash_undefined)))
252b5132 2343 {
947216bf
AM		 2344 Elf_Internal_Rela outrel;
2345 bfd_byte *loc;
b34976b6 2346 bfd_boolean skip, relocate;
0c715baa 2347 asection *sreloc;
252b5132
RH		 2348
2349 /* When generating a shared object, these relocations
2350 are copied into the output file to be resolved at run
2351 time. */
2352
b34976b6
AM		 2353 skip = FALSE;
2354 relocate = FALSE;
252b5132 2355
c629eae0
JJ		 2356 outrel.r_offset =
2357 _bfd_elf_section_offset (output_bfd, info, input_section,
2358 rel->r_offset);
2359 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2360 skip = TRUE;
0bb2d96a 2361 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2362 skip = TRUE, relocate = TRUE;
252b5132
RH		 2363 outrel.r_offset += (input_section->output_section->vma
2364 + input_section->output_offset);
2365
2366 if (skip)
0bb2d96a 2367 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 2368 else if (h != NULL
2369 && h->dynindx != -1
2370 && (r_type == R_386_PC32
2371 || !info->shared
2372 || !info->symbolic
2373 || (h->elf_link_hash_flags
2374 & ELF_LINK_HASH_DEF_REGULAR) == 0))
0bb2d96a 2375 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 2376 else
2377 {
5a15f56f 2378 /* This symbol is local, or marked to become local. */
b34976b6 2379 relocate = TRUE;
5a15f56f 2380 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 2381 }
2382
0c715baa
AM		 2383 sreloc = elf_section_data (input_section)->sreloc;
2384 if (sreloc == NULL)
2385 abort ();
2386
947216bf
AM		 2387 loc = sreloc->contents;
2388 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
0c715baa 2389 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 2390
2391 /* If this reloc is against an external symbol, we do
2392 not want to fiddle with the addend. Otherwise, we
2393 need to include the symbol value so that it becomes
2394 an addend for the dynamic reloc. */
2395 if (! relocate)
2396 continue;
2397 }
252b5132
RH		 2398 break;
2399
37e55690
JJ		 2400 case R_386_TLS_IE:
2401 if (info->shared)
2402 {
947216bf
AM		 2403 Elf_Internal_Rela outrel;
2404 bfd_byte *loc;
37e55690 2405 asection *sreloc;
37e55690
JJ		 2406
2407 outrel.r_offset = rel->r_offset
2408 + input_section->output_section->vma
2409 + input_section->output_offset;
2410 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2411 sreloc = elf_section_data (input_section)->sreloc;
2412 if (sreloc == NULL)
2413 abort ();
947216bf
AM		 2414 loc = sreloc->contents;
2415 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 2416 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2417 }
2418 /* Fall through */
2419
13ae64f3
JJ		 2420 case R_386_TLS_GD:
2421 case R_386_TLS_IE_32:
37e55690 2422 case R_386_TLS_GOTIE:
13ae64f3
JJ		 2423 r_type = elf_i386_tls_transition (info, r_type, h == NULL);
2424 tls_type = GOT_UNKNOWN;
2425 if (h == NULL && local_got_offsets)
2426 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
2427 else if (h != NULL)
2428 {
2429 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690 2430 if (!info->shared && h->dynindx == -1 && (tls_type & GOT_TLS_IE))
13ae64f3
JJ		 2431 r_type = R_386_TLS_LE_32;
2432 }
37e55690
JJ		 2433 if (tls_type == GOT_TLS_IE)
2434 tls_type = GOT_TLS_IE_NEG;
2435 if (r_type == R_386_TLS_GD)
2436 {
2437 if (tls_type == GOT_TLS_IE_POS)
2438 r_type = R_386_TLS_GOTIE;
2439 else if (tls_type & GOT_TLS_IE)
2440 r_type = R_386_TLS_IE_32;
2441 }
13ae64f3
JJ		 2442
2443 if (r_type == R_386_TLS_LE_32)
2444 {
82e51918 2445 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 2446 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
2447 {
2448 unsigned int val, type;
2449 bfd_vma roff;
2450
2451 /* GD->LE transition. */
2452 BFD_ASSERT (rel->r_offset >= 2);
2453 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2454 BFD_ASSERT (type == 0x8d || type == 0x04);
2455 BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size);
2456 BFD_ASSERT (bfd_get_8 (input_bfd,
2457 contents + rel->r_offset + 4)
2458 == 0xe8);
2459 BFD_ASSERT (rel + 1 < relend);
2460 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
2461 roff = rel->r_offset + 5;
2462 val = bfd_get_8 (input_bfd,
2463 contents + rel->r_offset - 1);
2464 if (type == 0x04)
2465 {
2466 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
2467 Change it into:
2468 movl %gs:0, %eax; subl $foo@tpoff, %eax
2469 (6 byte form of subl). */
2470 BFD_ASSERT (rel->r_offset >= 3);
2471 BFD_ASSERT (bfd_get_8 (input_bfd,
2472 contents + rel->r_offset - 3)
2473 == 0x8d);
2474 BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
2475 memcpy (contents + rel->r_offset - 3,
2476 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
2477 }
2478 else
2479 {
2480 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
2481 if (rel->r_offset + 10 <= input_section->_raw_size
2482 && bfd_get_8 (input_bfd,
2483 contents + rel->r_offset + 9) == 0x90)
2484 {
2485 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
2486 Change it into:
2487 movl %gs:0, %eax; subl $foo@tpoff, %eax
2488 (6 byte form of subl). */
2489 memcpy (contents + rel->r_offset - 2,
2490 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
2491 roff = rel->r_offset + 6;
2492 }
2493 else
2494 {
2495 /* leal foo(%reg), %eax; call ___tls_get_addr
2496 Change it into:
2497 movl %gs:0, %eax; subl $foo@tpoff, %eax
2498 (5 byte form of subl). */
2499 memcpy (contents + rel->r_offset - 2,
2500 "\x65\xa1\0\0\0\0\x2d\0\0\0", 11);
2501 }
2502 }
2503 bfd_put_32 (output_bfd, tpoff (info, relocation),
2504 contents + roff);
2505 /* Skip R_386_PLT32. */
2506 rel++;
2507 continue;
2508 }
37e55690 2509 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3
JJ		 2510 {
2511 unsigned int val, type;
2512
2513 /* IE->LE transition:
37e55690
JJ		 2514 Originally it can be one of:
2515 movl foo, %eax
2516 movl foo, %reg
2517 addl foo, %reg
2518 We change it into:
2519 movl $foo, %eax
2520 movl $foo, %reg
2521 addl $foo, %reg. */
2522 BFD_ASSERT (rel->r_offset >= 1);
2523 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
2524 BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size);
37e55690
JJ		 2525 if (val == 0xa1)
2526 {
2527 /* movl foo, %eax. */
55fd94b0
AM		 2528 bfd_put_8 (output_bfd, 0xb8,
2529 contents + rel->r_offset - 1);
37e55690 2530 }
299bf759 2531 else
37e55690 2532 {
299bf759 2533 BFD_ASSERT (rel->r_offset >= 2);
55fd94b0
AM		 2534 type = bfd_get_8 (input_bfd,
2535 contents + rel->r_offset - 2);
299bf759 2536 switch (type)
26e41594 2537 {
299bf759
L		 2538 case 0x8b:
2539 /* movl */
2540 BFD_ASSERT ((val & 0xc7) == 0x05);
2541 bfd_put_8 (output_bfd, 0xc7,
2542 contents + rel->r_offset - 2);
2543 bfd_put_8 (output_bfd,
2544 0xc0 | ((val >> 3) & 7),
2545 contents + rel->r_offset - 1);
2546 break;
2547 case 0x03:
2548 /* addl */
2549 BFD_ASSERT ((val & 0xc7) == 0x05);
2550 bfd_put_8 (output_bfd, 0x81,
2551 contents + rel->r_offset - 2);
2552 bfd_put_8 (output_bfd,
2553 0xc0 | ((val >> 3) & 7),
2554 contents + rel->r_offset - 1);
2555 break;
2556 default:
2557 BFD_FAIL ();
2558 break;
26e41594 2559 }
37e55690 2560 }
37e55690
JJ		 2561 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2562 contents + rel->r_offset);
2563 continue;
2564 }
2565 else
2566 {
2567 unsigned int val, type;
2568
2569 /* {IE_32,GOTIE}->LE transition:
2570 Originally it can be one of:
13ae64f3 2571 subl foo(%reg1), %reg2
13ae64f3 2572 movl foo(%reg1), %reg2
37e55690 2573 addl foo(%reg1), %reg2
13ae64f3
JJ		 2574 We change it into:
2575 subl $foo, %reg2
37e55690
JJ		 2576 movl $foo, %reg2 (6 byte form)
2577 addl $foo, %reg2. */
13ae64f3
JJ		 2578 BFD_ASSERT (rel->r_offset >= 2);
2579 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2580 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
2581 BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size);
37e55690 2582 BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4);
13ae64f3
JJ		 2583 if (type == 0x8b)
2584 {
2585 /* movl */
13ae64f3
JJ		 2586 bfd_put_8 (output_bfd, 0xc7,
2587 contents + rel->r_offset - 2);
2588 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2589 contents + rel->r_offset - 1);
2590 }
2591 else if (type == 0x2b)
2592 {
2593 /* subl */
13ae64f3
JJ		 2594 bfd_put_8 (output_bfd, 0x81,
2595 contents + rel->r_offset - 2);
2596 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
2597 contents + rel->r_offset - 1);
2598 }
37e55690
JJ		 2599 else if (type == 0x03)
2600 {
2601 /* addl */
2602 bfd_put_8 (output_bfd, 0x81,
2603 contents + rel->r_offset - 2);
2604 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2605 contents + rel->r_offset - 1);
2606 }
13ae64f3
JJ		 2607 else
2608 BFD_FAIL ();
37e55690
JJ		 2609 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
2610 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2611 contents + rel->r_offset);
2612 else
2613 bfd_put_32 (output_bfd, tpoff (info, relocation),
2614 contents + rel->r_offset);
13ae64f3
JJ		 2615 continue;
2616 }
2617 }
2618
2619 if (htab->sgot == NULL)
2620 abort ();
2621
2622 if (h != NULL)
2623 off = h->got.offset;
2624 else
2625 {
2626 if (local_got_offsets == NULL)
2627 abort ();
2628
2629 off = local_got_offsets[r_symndx];
2630 }
2631
2632 if ((off & 1) != 0)
2633 off &= ~1;
26e41594 2634 else
13ae64f3 2635 {
947216bf
AM		 2636 Elf_Internal_Rela outrel;
2637 bfd_byte *loc;
13ae64f3
JJ		 2638 int dr_type, indx;
2639
2640 if (htab->srelgot == NULL)
2641 abort ();
2642
2643 outrel.r_offset = (htab->sgot->output_section->vma
2644 + htab->sgot->output_offset + off);
2645
13ae64f3
JJ		 2646 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2647 if (r_type == R_386_TLS_GD)
2648 dr_type = R_386_TLS_DTPMOD32;
37e55690
JJ		 2649 else if (tls_type == GOT_TLS_IE_POS)
2650 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 2651 else
2652 dr_type = R_386_TLS_TPOFF32;
37e55690
JJ		 2653 if (dr_type == R_386_TLS_TPOFF && indx == 0)
2654 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
2655 htab->sgot->contents + off);
2656 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
c5c1f40c 2657 bfd_put_32 (output_bfd, dtpoff_base (info) - relocation,
c366c25e
JJ		 2658 htab->sgot->contents + off);
2659 else
2660 bfd_put_32 (output_bfd, 0,
2661 htab->sgot->contents + off);
13ae64f3 2662 outrel.r_info = ELF32_R_INFO (indx, dr_type);
947216bf
AM		 2663 loc = htab->srelgot->contents;
2664 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2665 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2666
2667 if (r_type == R_386_TLS_GD)
2668 {
2669 if (indx == 0)
2670 {
82e51918 2671 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 2672 bfd_put_32 (output_bfd,
2673 relocation - dtpoff_base (info),
2674 htab->sgot->contents + off + 4);
2675 }
2676 else
2677 {
2678 bfd_put_32 (output_bfd, 0,
2679 htab->sgot->contents + off + 4);
2680 outrel.r_info = ELF32_R_INFO (indx,
2681 R_386_TLS_DTPOFF32);
2682 outrel.r_offset += 4;
2683 htab->srelgot->reloc_count++;
947216bf
AM		 2684 loc += sizeof (Elf32_External_Rel);
2685 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
13ae64f3
JJ		 2686 }
2687 }
37e55690
JJ		 2688 else if (tls_type == GOT_TLS_IE_BOTH)
2689 {
2690 bfd_put_32 (output_bfd,
2691 indx == 0 ? relocation - dtpoff_base (info) : 0,
2692 htab->sgot->contents + off + 4);
2693 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
2694 outrel.r_offset += 4;
2695 htab->srelgot->reloc_count++;
947216bf 2696 loc += sizeof (Elf32_External_Rel);
37e55690
JJ		 2697 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2698 }
13ae64f3
JJ		 2699
2700 if (h != NULL)
2701 h->got.offset |= 1;
2702 else
2703 local_got_offsets[r_symndx] |= 1;
2704 }
2705
2706 if (off >= (bfd_vma) -2)
2707 abort ();
2708 if (r_type == ELF32_R_TYPE (rel->r_info))
2709 {
2710 relocation = htab->sgot->output_offset + off;
37e55690
JJ		 2711 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
2712 && tls_type == GOT_TLS_IE_BOTH)
2713 relocation += 4;
2714 if (r_type == R_386_TLS_IE)
2715 relocation += htab->sgot->output_section->vma;
b34976b6 2716 unresolved_reloc = FALSE;
13ae64f3
JJ		 2717 }
2718 else
2719 {
2720 unsigned int val, type;
2721 bfd_vma roff;
2722
2723 /* GD->IE transition. */
2724 BFD_ASSERT (rel->r_offset >= 2);
2725 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2726 BFD_ASSERT (type == 0x8d || type == 0x04);
2727 BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size);
2728 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
2729 == 0xe8);
2730 BFD_ASSERT (rel + 1 < relend);
2731 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
2732 roff = rel->r_offset - 3;
2733 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
2734 if (type == 0x04)
2735 {
2736 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
2737 Change it into:
2738 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
2739 BFD_ASSERT (rel->r_offset >= 3);
2740 BFD_ASSERT (bfd_get_8 (input_bfd,
2741 contents + rel->r_offset - 3)
2742 == 0x8d);
2743 BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
2744 val >>= 3;
2745 }
2746 else
2747 {
2748 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
2749 Change it into:
2750 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
2751 BFD_ASSERT (rel->r_offset + 10 <= input_section->_raw_size);
2752 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
2753 BFD_ASSERT (bfd_get_8 (input_bfd,
2754 contents + rel->r_offset + 9)
2755 == 0x90);
2756 roff = rel->r_offset - 2;
2757 }
2758 memcpy (contents + roff,
2759 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
2760 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 2761 /* If foo is used only with foo@gotntpoff(%reg) and
2762 foo@indntpoff, but not with foo@gottpoff(%reg), change
2763 subl $foo@gottpoff(%reg), %eax
2764 into:
2765 addl $foo@gotntpoff(%reg), %eax. */
2766 if (r_type == R_386_TLS_GOTIE)
2767 {
2768 contents[roff + 6] = 0x03;
2769 if (tls_type == GOT_TLS_IE_BOTH)
2770 off += 4;
2771 }
13ae64f3
JJ		 2772 bfd_put_32 (output_bfd, htab->sgot->output_offset + off,
2773 contents + roff + 8);
2774 /* Skip R_386_PLT32. */
2775 rel++;
2776 continue;
2777 }
2778 break;
2779
2780 case R_386_TLS_LDM:
2781 if (! info->shared)
2782 {
2783 unsigned int val;
2784
2785 /* LD->LE transition:
2786 Ensure it is:
2787 leal foo(%reg), %eax; call ___tls_get_addr.
2788 We change it into:
2789 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
2790 BFD_ASSERT (rel->r_offset >= 2);
2791 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2)
2792 == 0x8d);
2793 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
2794 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
2795 BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size);
2796 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
2797 == 0xe8);
2798 BFD_ASSERT (rel + 1 < relend);
2799 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
2800 memcpy (contents + rel->r_offset - 2,
2801 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
2802 /* Skip R_386_PLT32. */
2803 rel++;
2804 continue;
2805 }
2806
2807 if (htab->sgot == NULL)
2808 abort ();
2809
2810 off = htab->tls_ldm_got.offset;
2811 if (off & 1)
2812 off &= ~1;
2813 else
2814 {
947216bf
AM		 2815 Elf_Internal_Rela outrel;
2816 bfd_byte *loc;
13ae64f3
JJ		 2817
2818 if (htab->srelgot == NULL)
2819 abort ();
2820
2821 outrel.r_offset = (htab->sgot->output_section->vma
2822 + htab->sgot->output_offset + off);
2823
2824 bfd_put_32 (output_bfd, 0,
2825 htab->sgot->contents + off);
2826 bfd_put_32 (output_bfd, 0,
2827 htab->sgot->contents + off + 4);
2828 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
947216bf
AM		 2829 loc = htab->srelgot->contents;
2830 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2831 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2832 htab->tls_ldm_got.offset |= 1;
2833 }
2834 relocation = htab->sgot->output_offset + off;
b34976b6 2835 unresolved_reloc = FALSE;
13ae64f3
JJ		 2836 break;
2837
2838 case R_386_TLS_LDO_32:
a45bb67d 2839 if (info->shared || (input_section->flags & SEC_CODE) == 0)
13ae64f3
JJ		 2840 relocation -= dtpoff_base (info);
2841 else
2842 /* When converting LDO to LE, we must negate. */
2843 relocation = -tpoff (info, relocation);
2844 break;
2845
2846 case R_386_TLS_LE_32:
13ae64f3 2847 case R_386_TLS_LE:
37e55690
JJ		 2848 if (info->shared)
2849 {
947216bf 2850 Elf_Internal_Rela outrel;
37e55690 2851 asection *sreloc;
947216bf 2852 bfd_byte *loc;
37e55690
JJ		 2853 int indx;
2854
2855 outrel.r_offset = rel->r_offset
2856 + input_section->output_section->vma
2857 + input_section->output_offset;
2858 if (h != NULL && h->dynindx != -1)
2859 indx = h->dynindx;
2860 else
2861 indx = 0;
2862 if (r_type == R_386_TLS_LE_32)
2863 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
2864 else
2865 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
2866 sreloc = elf_section_data (input_section)->sreloc;
2867 if (sreloc == NULL)
2868 abort ();
947216bf
AM		 2869 loc = sreloc->contents;
2870 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 2871 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2872 if (indx)
2873 continue;
2874 else if (r_type == R_386_TLS_LE_32)
2875 relocation = dtpoff_base (info) - relocation;
2876 else
2877 relocation -= dtpoff_base (info);
2878 }
2879 else if (r_type == R_386_TLS_LE_32)
2880 relocation = tpoff (info, relocation);
2881 else
2882 relocation = -tpoff (info, relocation);
13ae64f3
JJ		 2883 break;
2884
252b5132
RH		 2885 default:
2886 break;
2887 }
2888
239e1f3a
AM		 2889 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
2890 because such sections are not SEC_ALLOC and thus ld.so will
2891 not process them. */
8c694914 2892 if (unresolved_reloc
239e1f3a 2893 && !((input_section->flags & SEC_DEBUGGING) != 0
8c694914 2894 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
6a30718d
JJ		 2895 {
2896 (*_bfd_error_handler)
2897 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
2898 bfd_archive_filename (input_bfd),
2899 bfd_get_section_name (input_bfd, input_section),
2900 (long) rel->r_offset,
2901 h->root.root.string);
b34976b6 2902 return FALSE;
6a30718d 2903 }
83be169b 2904
252b5132
RH		 2905 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2906 contents, rel->r_offset,
55fd94b0 2907 relocation, 0);
252b5132 2908
cf5c0c5b 2909 if (r != bfd_reloc_ok)
252b5132 2910 {
cf5c0c5b 2911 const char *name;
ffb2e45b 2912
cf5c0c5b
AM		 2913 if (h != NULL)
2914 name = h->root.root.string;
2915 else
2916 {
2917 name = bfd_elf_string_from_elf_section (input_bfd,
2918 symtab_hdr->sh_link,
2919 sym->st_name);
2920 if (name == NULL)
b34976b6 2921 return FALSE;
cf5c0c5b
AM		 2922 if (*name == '\0')
2923 name = bfd_section_name (input_bfd, sec);
2924 }
ffb2e45b 2925
cf5c0c5b
AM		 2926 if (r == bfd_reloc_overflow)
2927 {
cf5c0c5b 2928 if (! ((*info->callbacks->reloc_overflow)
55fd94b0 2929 (info, name, howto->name, 0,
cf5c0c5b 2930 input_bfd, input_section, rel->r_offset)))
b34976b6 2931 return FALSE;
cf5c0c5b
AM		 2932 }
2933 else
2934 {
2935 (*_bfd_error_handler)
2936 (_("%s(%s+0x%lx): reloc against `%s': error %d"),
2937 bfd_archive_filename (input_bfd),
2938 bfd_get_section_name (input_bfd, input_section),
2939 (long) rel->r_offset, name, (int) r);
b34976b6 2940 return FALSE;
cf5c0c5b 2941 }
252b5132
RH		 2942 }
2943 }
2944
b34976b6 2945 return TRUE;
252b5132
RH		 2946}
2947
2948/* Finish up dynamic symbol handling. We set the contents of various
2949 dynamic sections here. */
2950
b34976b6 2951static bfd_boolean
55fd94b0
AM		 2952elf_i386_finish_dynamic_symbol (bfd *output_bfd,
2953 struct bfd_link_info *info,
2954 struct elf_link_hash_entry *h,
2955 Elf_Internal_Sym *sym)
252b5132 2956{
6725bdbf 2957 struct elf_i386_link_hash_table *htab;
252b5132 2958
6725bdbf 2959 htab = elf_i386_hash_table (info);
252b5132
RH		 2960
2961 if (h->plt.offset != (bfd_vma) -1)
2962 {
252b5132
RH		 2963 bfd_vma plt_index;
2964 bfd_vma got_offset;
947216bf
AM		 2965 Elf_Internal_Rela rel;
2966 bfd_byte *loc;
252b5132
RH		 2967
2968 /* This symbol has an entry in the procedure linkage table. Set
2969 it up. */
2970
ffb2e45b
AM		 2971 if (h->dynindx == -1
2972 || htab->splt == NULL
2973 || htab->sgotplt == NULL
2974 || htab->srelplt == NULL)
2975 abort ();
252b5132
RH		 2976
2977 /* Get the index in the procedure linkage table which
2978 corresponds to this symbol. This is the index of this symbol
2979 in all the symbols for which we are making plt entries. The
2980 first entry in the procedure linkage table is reserved. */
2981 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
2982
2983 /* Get the offset into the .got table of the entry that
2984 corresponds to this function. Each .got entry is 4 bytes.
2985 The first three are reserved. */
2986 got_offset = (plt_index + 3) * 4;
2987
2988 /* Fill in the entry in the procedure linkage table. */
2989 if (! info->shared)
2990 {
6725bdbf 2991 memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry,
252b5132
RH		 2992 PLT_ENTRY_SIZE);
2993 bfd_put_32 (output_bfd,
6725bdbf
AM		 2994 (htab->sgotplt->output_section->vma
2995 + htab->sgotplt->output_offset
252b5132 2996 + got_offset),
6725bdbf 2997 htab->splt->contents + h->plt.offset + 2);
252b5132
RH		 2998 }
2999 else
3000 {
6725bdbf 3001 memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry,
252b5132
RH		 3002 PLT_ENTRY_SIZE);
3003 bfd_put_32 (output_bfd, got_offset,
6725bdbf 3004 htab->splt->contents + h->plt.offset + 2);
252b5132
RH		 3005 }
3006
3007 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
6725bdbf 3008 htab->splt->contents + h->plt.offset + 7);
252b5132 3009 bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
6725bdbf 3010 htab->splt->contents + h->plt.offset + 12);
252b5132
RH		 3011
3012 /* Fill in the entry in the global offset table. */
3013 bfd_put_32 (output_bfd,
6725bdbf
AM		 3014 (htab->splt->output_section->vma
3015 + htab->splt->output_offset
252b5132
RH		 3016 + h->plt.offset
3017 + 6),
6725bdbf 3018 htab->sgotplt->contents + got_offset);
252b5132
RH		 3019
3020 /* Fill in the entry in the .rel.plt section. */
6725bdbf
AM		 3021 rel.r_offset = (htab->sgotplt->output_section->vma
3022 + htab->sgotplt->output_offset
252b5132
RH		 3023 + got_offset);
3024 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
947216bf 3025 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 3026 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 3027
3028 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3029 {
3030 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 3031 the .plt section. Leave the value if there were any
3032 relocations where pointer equality matters (this is a clue
51b64d56
AM		 3033 for the dynamic linker, to make function pointer
3034 comparisons work between an application and shared
c6585bbb
JJ		 3035 library), otherwise set it to zero. If a function is only
3036 called from a binary, there is no need to slow down
3037 shared libraries because of that. */
252b5132 3038 sym->st_shndx = SHN_UNDEF;
c6585bbb
JJ		 3039 if ((h->elf_link_hash_flags & ELF_LINK_POINTER_EQUALITY_NEEDED) == 0)
3040 sym->st_value = 0;
252b5132
RH		 3041 }
3042 }
3043
13ae64f3
JJ		 3044 if (h->got.offset != (bfd_vma) -1
3045 && elf_i386_hash_entry(h)->tls_type != GOT_TLS_GD
37e55690 3046 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 3047 {
947216bf
AM		 3048 Elf_Internal_Rela rel;
3049 bfd_byte *loc;
252b5132
RH		 3050
3051 /* This symbol has an entry in the global offset table. Set it
3052 up. */
3053
ffb2e45b
AM		 3054 if (htab->sgot == NULL || htab->srelgot == NULL)
3055 abort ();
252b5132 3056
6725bdbf
AM		 3057 rel.r_offset = (htab->sgot->output_section->vma
3058 + htab->sgot->output_offset
dc810e39 3059 + (h->got.offset & ~(bfd_vma) 1));
252b5132 3060
dd5724d5
AM		 3061 /* If this is a static link, or it is a -Bsymbolic link and the
3062 symbol is defined locally or was forced to be local because
3063 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 3064 The entry in the global offset table will already have been
3065 initialized in the relocate_section function. */
6725bdbf 3066 if (info->shared
586119b3 3067 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 3068 {
6725bdbf 3069 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 3070 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3071 }
252b5132
RH		 3072 else
3073 {
dd5724d5 3074 BFD_ASSERT((h->got.offset & 1) == 0);
6725bdbf
AM		 3075 bfd_put_32 (output_bfd, (bfd_vma) 0,
3076 htab->sgot->contents + h->got.offset);
252b5132
RH		 3077 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
3078 }
3079
947216bf
AM		 3080 loc = htab->srelgot->contents;
3081 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3082 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 3083 }
3084
791987af 3085 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
252b5132 3086 {
947216bf
AM		 3087 Elf_Internal_Rela rel;
3088 bfd_byte *loc;
252b5132
RH		 3089
3090 /* This symbol needs a copy reloc. Set it up. */
3091
ffb2e45b
AM		 3092 if (h->dynindx == -1
3093 || (h->root.type != bfd_link_hash_defined
3094 && h->root.type != bfd_link_hash_defweak)
3095 || htab->srelbss == NULL)
3096 abort ();
252b5132
RH		 3097
3098 rel.r_offset = (h->root.u.def.value
3099 + h->root.u.def.section->output_section->vma
3100 + h->root.u.def.section->output_offset);
3101 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
947216bf
AM		 3102 loc = htab->srelbss->contents;
3103 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3104 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 3105 }
3106
3107 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
3108 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3109 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3110 sym->st_shndx = SHN_ABS;
3111
b34976b6 3112 return TRUE;
252b5132
RH		 3113}
3114
38701953
AM		 3115/* Used to decide how to sort relocs in an optimal manner for the
3116 dynamic linker, before writing them out. */
3117
3118static enum elf_reloc_type_class
55fd94b0 3119elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
38701953 3120{
55fd94b0 3121 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 3122 {
3123 case R_386_RELATIVE:
3124 return reloc_class_relative;
3125 case R_386_JUMP_SLOT:
3126 return reloc_class_plt;
3127 case R_386_COPY:
3128 return reloc_class_copy;
3129 default:
3130 return reloc_class_normal;
3131 }
3132}
3133
252b5132
RH		 3134/* Finish up the dynamic sections. */
3135
b34976b6 3136static bfd_boolean
55fd94b0
AM		 3137elf_i386_finish_dynamic_sections (bfd *output_bfd,
3138 struct bfd_link_info *info)
252b5132 3139{
6725bdbf 3140 struct elf_i386_link_hash_table *htab;
252b5132 3141 bfd *dynobj;
252b5132
RH		 3142 asection *sdyn;
3143
6725bdbf 3144 htab = elf_i386_hash_table (info);
ebe50bae 3145 dynobj = htab->elf.dynobj;
252b5132
RH		 3146 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3147
ebe50bae 3148 if (htab->elf.dynamic_sections_created)
252b5132 3149 {
252b5132
RH		 3150 Elf32_External_Dyn *dyncon, *dynconend;
3151
ffb2e45b
AM		 3152 if (sdyn == NULL || htab->sgot == NULL)
3153 abort ();
252b5132
RH		 3154
3155 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3156 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3157 for (; dyncon < dynconend; dyncon++)
3158 {
3159 Elf_Internal_Dyn dyn;
51b64d56 3160 asection *s;
252b5132
RH		 3161
3162 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3163
3164 switch (dyn.d_tag)
3165 {
3166 default:
0ac8d2ca 3167 continue;
252b5132
RH		 3168
3169 case DT_PLTGOT:
6725bdbf 3170 dyn.d_un.d_ptr = htab->sgot->output_section->vma;
6725bdbf
AM		 3171 break;
3172
252b5132 3173 case DT_JMPREL:
6348e046
AM		 3174 s = htab->srelplt;
3175 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 3176 break;
3177
3178 case DT_PLTRELSZ:
6348e046
AM		 3179 s = htab->srelplt;
3180 dyn.d_un.d_val = s->_raw_size;
252b5132
RH		 3181 break;
3182
3183 case DT_RELSZ:
3184 /* My reading of the SVR4 ABI indicates that the
3185 procedure linkage table relocs (DT_JMPREL) should be
3186 included in the overall relocs (DT_REL). This is
3187 what Solaris does. However, UnixWare can not handle
3188 that case. Therefore, we override the DT_RELSZ entry
6348e046
AM		 3189 here to make it not include the JMPREL relocs. */
3190 s = htab->srelplt;
3191 if (s == NULL)
3192 continue;
3193 dyn.d_un.d_val -= s->_raw_size;
3194 break;
3195
3196 case DT_REL:
3197 /* We may not be using the standard ELF linker script.
3198 If .rel.plt is the first .rel section, we adjust
3199 DT_REL to not include it. */
3200 s = htab->srelplt;
3201 if (s == NULL)
3202 continue;
3203 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
3204 continue;
3205 dyn.d_un.d_ptr += s->_raw_size;
252b5132
RH		 3206 break;
3207 }
0ac8d2ca
AM		 3208
3209 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 3210 }
3211
3212 /* Fill in the first entry in the procedure linkage table. */
6725bdbf 3213 if (htab->splt && htab->splt->_raw_size > 0)
252b5132
RH		 3214 {
3215 if (info->shared)
6725bdbf
AM		 3216 memcpy (htab->splt->contents,
3217 elf_i386_pic_plt0_entry, PLT_ENTRY_SIZE);
252b5132
RH		 3218 else
3219 {
6725bdbf
AM		 3220 memcpy (htab->splt->contents,
3221 elf_i386_plt0_entry, PLT_ENTRY_SIZE);
252b5132 3222 bfd_put_32 (output_bfd,
6725bdbf
AM		 3223 (htab->sgotplt->output_section->vma
3224 + htab->sgotplt->output_offset
3225 + 4),
3226 htab->splt->contents + 2);
252b5132 3227 bfd_put_32 (output_bfd,
6725bdbf
AM		 3228 (htab->sgotplt->output_section->vma
3229 + htab->sgotplt->output_offset
3230 + 8),
3231 htab->splt->contents + 8);
252b5132
RH		 3232 }
3233
3234 /* UnixWare sets the entsize of .plt to 4, although that doesn't
3235 really seem like the right value. */
6725bdbf
AM		 3236 elf_section_data (htab->splt->output_section)
3237 ->this_hdr.sh_entsize = 4;
252b5132
RH		 3238 }
3239 }
3240
12d0ee4a 3241 if (htab->sgotplt)
252b5132 3242 {
12d0ee4a
AM		 3243 /* Fill in the first three entries in the global offset table. */
3244 if (htab->sgotplt->_raw_size > 0)
3245 {
3246 bfd_put_32 (output_bfd,
55fd94b0 3247 (sdyn == NULL ? 0
12d0ee4a
AM		 3248 : sdyn->output_section->vma + sdyn->output_offset),
3249 htab->sgotplt->contents);
55fd94b0
AM		 3250 bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 4);
3251 bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 8);
12d0ee4a 3252 }
252b5132 3253
12d0ee4a
AM		 3254 elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4;
3255 }
b34976b6 3256 return TRUE;
252b5132
RH		 3257}
3258
3259#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
3260#define TARGET_LITTLE_NAME "elf32-i386"
3261#define ELF_ARCH bfd_arch_i386
3262#define ELF_MACHINE_CODE EM_386
3263#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 3264
3265#define elf_backend_can_gc_sections 1
51b64d56 3266#define elf_backend_can_refcount 1
252b5132
RH		 3267#define elf_backend_want_got_plt 1
3268#define elf_backend_plt_readonly 1
3269#define elf_backend_want_plt_sym 0
3270#define elf_backend_got_header_size 12
252b5132 3271
8c29f035
AM		 3272/* Support RELA for objdump of prelink objects. */
3273#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 3274#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
3275
13ae64f3 3276#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 3277
dd5724d5
AM		 3278#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
3279#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
3280#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
3281
3282#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
3283#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 3284#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 3285#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 3286#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 3287#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
3288#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
3289#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
3290#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 3291#define elf_backend_grok_prstatus elf_i386_grok_prstatus
3292#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 3293#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 3294#define elf_backend_relocate_section elf_i386_relocate_section
3295#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
dd5724d5 3296
252b5132 3297#include "elf32-target.h"
2bc3c89a
AM		 3298
3299/* FreeBSD support. */
3300
3301#undef TARGET_LITTLE_SYM
3302#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
3303#undef TARGET_LITTLE_NAME
3304#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
3305
3306/* The kernel recognizes executables as valid only if they carry a
3307 "FreeBSD" label in the ELF header. So we put this label on all
3308 executables and (for simplicity) also all other object files. */
3309
2bc3c89a 3310static void
55fd94b0
AM		 3311elf_i386_post_process_headers (bfd *abfd,
3312 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2bc3c89a
AM		 3313{
3314 Elf_Internal_Ehdr *i_ehdrp;
3315
3316 i_ehdrp = elf_elfheader (abfd);
3317
3318 /* Put an ABI label supported by FreeBSD >= 4.1. */
3319 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD;
3320#ifdef OLD_FREEBSD_ABI_LABEL
3321 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
3322 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 3323#endif
2bc3c89a
AM		 3324}
3325
3326#undef elf_backend_post_process_headers
571fe01f
NC		 3327#define elf_backend_post_process_headers elf_i386_post_process_headers
3328#undef elf32_bed
3329#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a
AM		 3330
3331#include "elf32-target.h"
GDB Binutils - Deliverables
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