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2007-07-03 Markus Deuling <deuling@de.ibm.com>
[thirdparty/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
b2a8e766 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
ab96bf03 3 2003, 2004, 2005, 2006, 2007 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
3e110533 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132 20
252b5132 21#include "sysdep.h"
3db64b00 22#include "bfd.h"
252b5132
RH		 23#include "bfdlink.h"
24#include "libbfd.h"
25#include "elf-bfd.h"
eac338cf 26#include "elf-vxworks.h"
252b5132 27
55fd94b0
AM		 28/* 386 uses REL relocations instead of RELA. */
29#define USE_REL 1
252b5132
RH		 30
31#include "elf/i386.h"
32
33static reloc_howto_type elf_howto_table[]=
34{
b34976b6 35 HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
1b452ec6 36 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM		 37 TRUE, 0x00000000, 0x00000000, FALSE),
38 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 39 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM		 40 TRUE, 0xffffffff, 0xffffffff, FALSE),
41 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 42 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM		 43 TRUE, 0xffffffff, 0xffffffff, TRUE),
44 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 45 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM		 46 TRUE, 0xffffffff, 0xffffffff, FALSE),
47 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 48 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM		 49 TRUE, 0xffffffff, 0xffffffff, TRUE),
50 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 51 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM		 52 TRUE, 0xffffffff, 0xffffffff, FALSE),
53 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 54 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM		 55 TRUE, 0xffffffff, 0xffffffff, FALSE),
56 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 57 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM		 58 TRUE, 0xffffffff, 0xffffffff, FALSE),
59 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 60 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM		 61 TRUE, 0xffffffff, 0xffffffff, FALSE),
62 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 63 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM		 64 TRUE, 0xffffffff, 0xffffffff, FALSE),
65 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 66 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 67 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 68
dc47f327
AM		 69 /* We have a gap in the reloc numbers here.
70 R_386_standard counts the number up to this point, and
71 R_386_ext_offset is the value to subtract from a reloc type of
72 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM		 73#define R_386_standard (R_386_GOTPC + 1)
74#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 75
37e55690 76 /* These relocs are a GNU extension. */
b34976b6 77 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 78 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM		 79 TRUE, 0xffffffff, 0xffffffff, FALSE),
80 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 81 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM		 82 TRUE, 0xffffffff, 0xffffffff, FALSE),
83 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 84 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM		 85 TRUE, 0xffffffff, 0xffffffff, FALSE),
86 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 87 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM		 88 TRUE, 0xffffffff, 0xffffffff, FALSE),
89 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 90 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM		 91 TRUE, 0xffffffff, 0xffffffff, FALSE),
92 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 93 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM		 94 TRUE, 0xffffffff, 0xffffffff, FALSE),
95 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 96 bfd_elf_generic_reloc, "R_386_16",
b34976b6 97 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 98 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 99 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM		 100 TRUE, 0xffff, 0xffff, TRUE),
101 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 102 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM		 103 TRUE, 0xff, 0xff, FALSE),
104 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 105 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 106 TRUE, 0xff, 0xff, TRUE),
dc47f327 107
55fd94b0
AM		 108#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
109#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 110 /* These are common with Solaris TLS implementation. */
b34976b6 111 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 112 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM		 113 TRUE, 0xffffffff, 0xffffffff, FALSE),
114 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 115 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM		 116 TRUE, 0xffffffff, 0xffffffff, FALSE),
117 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 118 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM		 119 TRUE, 0xffffffff, 0xffffffff, FALSE),
120 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 121 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM		 122 TRUE, 0xffffffff, 0xffffffff, FALSE),
123 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 124 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM		 125 TRUE, 0xffffffff, 0xffffffff, FALSE),
126 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 127 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 128 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO		 129 EMPTY_HOWTO (38),
130 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
131 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
132 TRUE, 0xffffffff, 0xffffffff, FALSE),
133 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
134 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
135 FALSE, 0, 0, FALSE),
136 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
137 bfd_elf_generic_reloc, "R_386_TLS_DESC",
138 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ		 139
140 /* Another gap. */
67a4f2b7 141#define R_386_tls (R_386_TLS_DESC + 1 - R_386_tls_offset)
55fd94b0 142#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_tls)
252b5132
RH		 143
144/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH		 145 HOWTO (R_386_GNU_VTINHERIT, /* type */
146 0, /* rightshift */
147 2, /* size (0 = byte, 1 = short, 2 = long) */
148 0, /* bitsize */
b34976b6 149 FALSE, /* pc_relative */
252b5132
RH		 150 0, /* bitpos */
151 complain_overflow_dont, /* complain_on_overflow */
152 NULL, /* special_function */
153 "R_386_GNU_VTINHERIT", /* name */
b34976b6 154 FALSE, /* partial_inplace */
252b5132
RH		 155 0, /* src_mask */
156 0, /* dst_mask */
b34976b6 157 FALSE), /* pcrel_offset */
252b5132
RH		 158
159/* GNU extension to record C++ vtable member usage. */
252b5132
RH		 160 HOWTO (R_386_GNU_VTENTRY, /* type */
161 0, /* rightshift */
162 2, /* size (0 = byte, 1 = short, 2 = long) */
163 0, /* bitsize */
b34976b6 164 FALSE, /* pc_relative */
252b5132
RH		 165 0, /* bitpos */
166 complain_overflow_dont, /* complain_on_overflow */
167 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
168 "R_386_GNU_VTENTRY", /* name */
b34976b6 169 FALSE, /* partial_inplace */
252b5132
RH		 170 0, /* src_mask */
171 0, /* dst_mask */
b34976b6 172 FALSE) /* pcrel_offset */
dc47f327 173
55fd94b0 174#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM		 175
176};
177
252b5132 178#ifdef DEBUG_GEN_RELOC
55fd94b0
AM		 179#define TRACE(str) \
180 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH		 181#else
182#define TRACE(str)
183#endif
184
185static reloc_howto_type *
55fd94b0
AM		 186elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
187 bfd_reloc_code_real_type code)
252b5132
RH		 188{
189 switch (code)
190 {
191 case BFD_RELOC_NONE:
192 TRACE ("BFD_RELOC_NONE");
55fd94b0 193 return &elf_howto_table[R_386_NONE];
252b5132
RH		 194
195 case BFD_RELOC_32:
196 TRACE ("BFD_RELOC_32");
55fd94b0 197 return &elf_howto_table[R_386_32];
252b5132
RH		 198
199 case BFD_RELOC_CTOR:
200 TRACE ("BFD_RELOC_CTOR");
55fd94b0 201 return &elf_howto_table[R_386_32];
252b5132
RH		 202
203 case BFD_RELOC_32_PCREL:
204 TRACE ("BFD_RELOC_PC32");
55fd94b0 205 return &elf_howto_table[R_386_PC32];
252b5132
RH		 206
207 case BFD_RELOC_386_GOT32:
208 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 209 return &elf_howto_table[R_386_GOT32];
252b5132
RH		 210
211 case BFD_RELOC_386_PLT32:
212 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 213 return &elf_howto_table[R_386_PLT32];
252b5132
RH		 214
215 case BFD_RELOC_386_COPY:
216 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 217 return &elf_howto_table[R_386_COPY];
252b5132
RH		 218
219 case BFD_RELOC_386_GLOB_DAT:
220 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 221 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH		 222
223 case BFD_RELOC_386_JUMP_SLOT:
224 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 225 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH		 226
227 case BFD_RELOC_386_RELATIVE:
228 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 229 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH		 230
231 case BFD_RELOC_386_GOTOFF:
232 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 233 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH		 234
235 case BFD_RELOC_386_GOTPC:
236 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 237 return &elf_howto_table[R_386_GOTPC];
252b5132 238
37e55690
JJ		 239 /* These relocs are a GNU extension. */
240 case BFD_RELOC_386_TLS_TPOFF:
241 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 242 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ		 243
244 case BFD_RELOC_386_TLS_IE:
245 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 246 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ		 247
248 case BFD_RELOC_386_TLS_GOTIE:
249 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 250 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 251
13ae64f3
JJ		 252 case BFD_RELOC_386_TLS_LE:
253 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 254 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ		 255
256 case BFD_RELOC_386_TLS_GD:
257 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 258 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ		 259
260 case BFD_RELOC_386_TLS_LDM:
261 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 262 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 263
252b5132
RH		 264 case BFD_RELOC_16:
265 TRACE ("BFD_RELOC_16");
55fd94b0 266 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH		 267
268 case BFD_RELOC_16_PCREL:
269 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 270 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH		 271
272 case BFD_RELOC_8:
273 TRACE ("BFD_RELOC_8");
55fd94b0 274 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH		 275
276 case BFD_RELOC_8_PCREL:
277 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 278 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 279
13ae64f3
JJ		 280 /* Common with Sun TLS implementation. */
281 case BFD_RELOC_386_TLS_LDO_32:
282 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 283 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ		 284
285 case BFD_RELOC_386_TLS_IE_32:
286 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 287 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ		 288
289 case BFD_RELOC_386_TLS_LE_32:
290 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 291 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ		 292
293 case BFD_RELOC_386_TLS_DTPMOD32:
294 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 295 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ		 296
297 case BFD_RELOC_386_TLS_DTPOFF32:
298 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 299 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ		 300
301 case BFD_RELOC_386_TLS_TPOFF32:
302 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 303 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 304
67a4f2b7
AO		 305 case BFD_RELOC_386_TLS_GOTDESC:
306 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
307 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
308
309 case BFD_RELOC_386_TLS_DESC_CALL:
310 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
311 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
312
313 case BFD_RELOC_386_TLS_DESC:
314 TRACE ("BFD_RELOC_386_TLS_DESC");
315 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
316
252b5132
RH		 317 case BFD_RELOC_VTABLE_INHERIT:
318 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 319 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH		 320
321 case BFD_RELOC_VTABLE_ENTRY:
322 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 323 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH		 324
325 default:
326 break;
327 }
328
329 TRACE ("Unknown");
330 return 0;
331}
332
157090f7
AM		 333static reloc_howto_type *
334elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
335 const char *r_name)
336{
337 unsigned int i;
338
339 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
340 if (elf_howto_table[i].name != NULL
341 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
342 return &elf_howto_table[i];
343
344 return NULL;
345}
346
252b5132 347static void
55fd94b0
AM		 348elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
349 arelent *cache_ptr,
350 Elf_Internal_Rela *dst)
252b5132 351{
dc47f327
AM		 352 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
353 unsigned int indx;
354
355 if ((indx = r_type) >= R_386_standard
356 && ((indx = r_type - R_386_ext_offset) - R_386_standard
357 >= R_386_ext - R_386_standard)
13ae64f3
JJ		 358 && ((indx = r_type - R_386_tls_offset) - R_386_ext
359 >= R_386_tls - R_386_ext)
360 && ((indx = r_type - R_386_vt_offset) - R_386_tls
361 >= R_386_vt - R_386_tls))
252b5132 362 {
d003868e
AM		 363 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
364 abfd, (int) r_type);
55fd94b0 365 indx = R_386_NONE;
252b5132 366 }
dc47f327 367 cache_ptr->howto = &elf_howto_table[indx];
252b5132
RH		 368}
369
370/* Return whether a symbol name implies a local label. The UnixWare
371 2.1 cc generates temporary symbols that start with .X, so we
372 recognize them here. FIXME: do other SVR4 compilers also use .X?.
373 If so, we should move the .X recognition into
374 _bfd_elf_is_local_label_name. */
375
b34976b6 376static bfd_boolean
55fd94b0 377elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 378{
379 if (name[0] == '.' && name[1] == 'X')
b34976b6 380 return TRUE;
252b5132
RH		 381
382 return _bfd_elf_is_local_label_name (abfd, name);
383}
384\f
38701953 385/* Support for core dump NOTE sections. */
61adc1a4 386
b34976b6 387static bfd_boolean
55fd94b0 388elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 389{
390 int offset;
eea6121a 391 size_t size;
38701953 392
61adc1a4 393 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 394 {
61adc1a4
NC		 395 int pr_version = bfd_get_32 (abfd, note->descdata);
396
397 if (pr_version != 1)
398 return FALSE;
399
400 /* pr_cursig */
401 elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
402
403 /* pr_pid */
404 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
405
406 /* pr_reg */
407 offset = 28;
eea6121a 408 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 409 }
410 else
411 {
412 switch (note->descsz)
413 {
414 default:
415 return FALSE;
38701953 416
61adc1a4
NC		 417 case 144: /* Linux/i386 */
418 /* pr_cursig */
419 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 420
61adc1a4
NC		 421 /* pr_pid */
422 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
38701953 423
61adc1a4
NC		 424 /* pr_reg */
425 offset = 72;
eea6121a 426 size = 68;
38701953 427
61adc1a4
NC		 428 break;
429 }
38701953
AM		 430 }
431
432 /* Make a ".reg/999" section. */
433 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 434 size, note->descpos + offset);
38701953
AM		 435}
436
b34976b6 437static bfd_boolean
55fd94b0 438elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 439{
61adc1a4 440 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 441 {
61adc1a4
NC		 442 int pr_version = bfd_get_32 (abfd, note->descdata);
443
444 if (pr_version != 1)
b34976b6 445 return FALSE;
38701953 446
61adc1a4
NC		 447 elf_tdata (abfd)->core_program
448 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
449 elf_tdata (abfd)->core_command
450 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
451 }
452 else
453 {
454 switch (note->descsz)
455 {
456 default:
457 return FALSE;
458
459 case 124: /* Linux/i386 elf_prpsinfo. */
460 elf_tdata (abfd)->core_program
461 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
462 elf_tdata (abfd)->core_command
463 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
464 }
38701953
AM		 465 }
466
467 /* Note that for some reason, a spurious space is tacked
468 onto the end of the args in some (at least one anyway)
469 implementations, so strip it off if it exists. */
38701953
AM		 470 {
471 char *command = elf_tdata (abfd)->core_command;
472 int n = strlen (command);
473
474 if (0 < n && command[n - 1] == ' ')
475 command[n - 1] = '\0';
476 }
477
b34976b6 478 return TRUE;
38701953
AM		 479}
480\f
481/* Functions for the i386 ELF linker.
482
483 In order to gain some understanding of code in this file without
484 knowing all the intricate details of the linker, note the
485 following:
486
487 Functions named elf_i386_* are called by external routines, other
488 functions are only called locally. elf_i386_* functions appear
489 in this file more or less in the order in which they are called
490 from external routines. eg. elf_i386_check_relocs is called
491 early in the link process, elf_i386_finish_dynamic_sections is
492 one of the last functions. */
493
252b5132
RH		 494
495/* The name of the dynamic interpreter. This is put in the .interp
496 section. */
497
498#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
499
a23b6845
AM		 500/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
501 copying dynamic variables from a shared lib into an app's dynbss
502 section, and instead use a dynamic relocation to point into the
503 shared lib. */
504#define ELIMINATE_COPY_RELOCS 1
505
252b5132
RH		 506/* The size in bytes of an entry in the procedure linkage table. */
507
508#define PLT_ENTRY_SIZE 16
509
510/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 511 this. See the SVR4 ABI i386 supplement to see how this works.
512 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 513
eac338cf 514static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 515{
516 0xff, 0x35, /* pushl contents of address */
517 0, 0, 0, 0, /* replaced with address of .got + 4. */
518 0xff, 0x25, /* jmp indirect */
eac338cf 519 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 520};
521
522/* Subsequent entries in an absolute procedure linkage table look like
523 this. */
524
525static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
526{
527 0xff, 0x25, /* jmp indirect */
528 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
529 0x68, /* pushl immediate */
530 0, 0, 0, 0, /* replaced with offset into relocation table. */
531 0xe9, /* jmp relative */
532 0, 0, 0, 0 /* replaced with offset to start of .plt. */
533};
534
eac338cf
PB		 535/* The first entry in a PIC procedure linkage table look like this.
536 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 537
eac338cf 538static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 539{
540 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 541 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 542};
543
544/* Subsequent entries in a PIC procedure linkage table look like this. */
545
546static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
547{
548 0xff, 0xa3, /* jmp *offset(%ebx) */
549 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
550 0x68, /* pushl immediate */
551 0, 0, 0, 0, /* replaced with offset into relocation table. */
552 0xe9, /* jmp relative */
553 0, 0, 0, 0 /* replaced with offset to start of .plt. */
554};
555
eac338cf
PB		 556/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
557 for the PLTResolve stub and then for each PLT entry. */
558#define PLTRESOLVE_RELOCS_SHLIB 0
559#define PLTRESOLVE_RELOCS 2
560#define PLT_NON_JUMP_SLOT_RELOCS 2
561
252b5132 562/* The i386 linker needs to keep track of the number of relocs that it
ffb2e45b
AM		 563 decides to copy as dynamic relocs in check_relocs for each symbol.
564 This is so that it can later discard them if they are found to be
565 unnecessary. We store the information in a field extending the
566 regular ELF linker hash table. */
252b5132 567
ffb2e45b 568struct elf_i386_dyn_relocs
252b5132 569{
ffb2e45b 570 struct elf_i386_dyn_relocs *next;
0c715baa
AM		 571
572 /* The input section of the reloc. */
573 asection *sec;
574
575 /* Total number of relocs copied for the input section. */
252b5132 576 bfd_size_type count;
0c715baa
AM		 577
578 /* Number of pc-relative relocs copied for the input section. */
579 bfd_size_type pc_count;
252b5132
RH		 580};
581
582/* i386 ELF linker hash entry. */
583
584struct elf_i386_link_hash_entry
585{
ebe50bae 586 struct elf_link_hash_entry elf;
252b5132 587
0c715baa 588 /* Track dynamic relocs copied for this symbol. */
ffb2e45b 589 struct elf_i386_dyn_relocs *dyn_relocs;
13ae64f3 590
37e55690
JJ		 591#define GOT_UNKNOWN 0
592#define GOT_NORMAL 1
593#define GOT_TLS_GD 2
594#define GOT_TLS_IE 4
595#define GOT_TLS_IE_POS 5
596#define GOT_TLS_IE_NEG 6
597#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO		 598#define GOT_TLS_GDESC 8
599#define GOT_TLS_GD_BOTH_P(type) \
600 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
601#define GOT_TLS_GD_P(type) \
602 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
603#define GOT_TLS_GDESC_P(type) \
604 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
605#define GOT_TLS_GD_ANY_P(type) \
606 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 607 unsigned char tls_type;
67a4f2b7
AO		 608
609 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
610 starting at the end of the jump table. */
611 bfd_vma tlsdesc_got;
13ae64f3
JJ		 612};
613
614#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
615
616struct elf_i386_obj_tdata
617{
618 struct elf_obj_tdata root;
619
620 /* tls_type for each local got entry. */
621 char *local_got_tls_type;
67a4f2b7
AO		 622
623 /* GOTPLT entries for TLS descriptors. */
624 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 625};
626
13ae64f3
JJ		 627#define elf_i386_tdata(abfd) \
628 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
629
630#define elf_i386_local_got_tls_type(abfd) \
631 (elf_i386_tdata (abfd)->local_got_tls_type)
632
67a4f2b7
AO		 633#define elf_i386_local_tlsdesc_gotent(abfd) \
634 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
635
b34976b6 636static bfd_boolean
55fd94b0 637elf_i386_mkobject (bfd *abfd)
13ae64f3 638{
13ae64f3 639 if (abfd->tdata.any == NULL)
62d7a5f6
AM		 640 {
641 bfd_size_type amt = sizeof (struct elf_i386_obj_tdata);
642 abfd->tdata.any = bfd_zalloc (abfd, amt);
643 if (abfd->tdata.any == NULL)
644 return FALSE;
645 }
646 return bfd_elf_mkobject (abfd);
13ae64f3 647}
cedb70c5 648
252b5132
RH		 649/* i386 ELF linker hash table. */
650
651struct elf_i386_link_hash_table
652{
ebe50bae 653 struct elf_link_hash_table elf;
252b5132 654
6725bdbf
AM		 655 /* Short-cuts to get to dynamic linker sections. */
656 asection *sgot;
657 asection *sgotplt;
658 asection *srelgot;
659 asection *splt;
660 asection *srelplt;
661 asection *sdynbss;
662 asection *srelbss;
9635fe29 663
eac338cf
PB		 664 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
665 asection *srelplt2;
666
eac338cf
PB		 667 /* True if the target system is VxWorks. */
668 int is_vxworks;
ec338859 669
eac338cf
PB		 670 /* Value used to fill the last word of the first plt entry. */
671 bfd_byte plt0_pad_byte;
9635fe29 672
5ae0bfb6
RS		 673 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
674 bfd_vma next_tls_desc_index;
675
13ae64f3
JJ		 676 union {
677 bfd_signed_vma refcount;
678 bfd_vma offset;
679 } tls_ldm_got;
680
67a4f2b7
AO		 681 /* The amount of space used by the reserved portion of the sgotplt
682 section, plus whatever space is used by the jump slots. */
683 bfd_vma sgotplt_jump_table_size;
684
ec338859
AM		 685 /* Small local sym to section mapping cache. */
686 struct sym_sec_cache sym_sec;
6725bdbf 687};
252b5132
RH		 688
689/* Get the i386 ELF linker hash table from a link_info structure. */
690
691#define elf_i386_hash_table(p) \
692 ((struct elf_i386_link_hash_table *) ((p)->hash))
693
67a4f2b7 694#define elf_i386_compute_jump_table_size(htab) \
5ae0bfb6 695 ((htab)->next_tls_desc_index * 4)
67a4f2b7 696
252b5132
RH		 697/* Create an entry in an i386 ELF linker hash table. */
698
699static struct bfd_hash_entry *
55fd94b0
AM		 700link_hash_newfunc (struct bfd_hash_entry *entry,
701 struct bfd_hash_table *table,
702 const char *string)
252b5132 703{
252b5132
RH		 704 /* Allocate the structure if it has not already been allocated by a
705 subclass. */
ebe50bae
AM		 706 if (entry == NULL)
707 {
708 entry = bfd_hash_allocate (table,
709 sizeof (struct elf_i386_link_hash_entry));
710 if (entry == NULL)
711 return entry;
712 }
252b5132
RH		 713
714 /* Call the allocation method of the superclass. */
ebe50bae
AM		 715 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
716 if (entry != NULL)
252b5132 717 {
ebe50bae
AM		 718 struct elf_i386_link_hash_entry *eh;
719
720 eh = (struct elf_i386_link_hash_entry *) entry;
721 eh->dyn_relocs = NULL;
13ae64f3 722 eh->tls_type = GOT_UNKNOWN;
67a4f2b7 723 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 724 }
725
ebe50bae 726 return entry;
252b5132
RH		 727}
728
729/* Create an i386 ELF linker hash table. */
730
731static struct bfd_link_hash_table *
55fd94b0 732elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 733{
734 struct elf_i386_link_hash_table *ret;
dc810e39 735 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 736
55fd94b0 737 ret = bfd_malloc (amt);
ebe50bae 738 if (ret == NULL)
252b5132
RH		 739 return NULL;
740
66eb6687
AM		 741 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
742 sizeof (struct elf_i386_link_hash_entry)))
252b5132 743 {
e2d34d7d 744 free (ret);
252b5132
RH		 745 return NULL;
746 }
747
6725bdbf
AM		 748 ret->sgot = NULL;
749 ret->sgotplt = NULL;
750 ret->srelgot = NULL;
751 ret->splt = NULL;
752 ret->srelplt = NULL;
753 ret->sdynbss = NULL;
754 ret->srelbss = NULL;
7a624474 755 ret->tls_ldm_got.refcount = 0;
5ae0bfb6 756 ret->next_tls_desc_index = 0;
67a4f2b7 757 ret->sgotplt_jump_table_size = 0;
ec338859 758 ret->sym_sec.abfd = NULL;
eac338cf
PB		 759 ret->is_vxworks = 0;
760 ret->srelplt2 = NULL;
eac338cf 761 ret->plt0_pad_byte = 0;
6725bdbf 762
ebe50bae 763 return &ret->elf.root;
252b5132
RH		 764}
765
6725bdbf
AM		 766/* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up
767 shortcuts to them in our hash table. */
768
b34976b6 769static bfd_boolean
55fd94b0 770create_got_section (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 771{
772 struct elf_i386_link_hash_table *htab;
773
774 if (! _bfd_elf_create_got_section (dynobj, info))
b34976b6 775 return FALSE;
6725bdbf
AM		 776
777 htab = elf_i386_hash_table (info);
778 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
779 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
780 if (!htab->sgot || !htab->sgotplt)
781 abort ();
782
3496cb2a
L		 783 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rel.got",
784 (SEC_ALLOC | SEC_LOAD
785 | SEC_HAS_CONTENTS
786 | SEC_IN_MEMORY
787 | SEC_LINKER_CREATED
788 | SEC_READONLY));
6725bdbf 789 if (htab->srelgot == NULL
6725bdbf 790 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
b34976b6
AM		 791 return FALSE;
792 return TRUE;
6725bdbf
AM		 793}
794
795/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
796 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
797 hash table. */
798
b34976b6 799static bfd_boolean
55fd94b0 800elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 801{
802 struct elf_i386_link_hash_table *htab;
803
804 htab = elf_i386_hash_table (info);
805 if (!htab->sgot && !create_got_section (dynobj, info))
b34976b6 806 return FALSE;
6725bdbf
AM		 807
808 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 809 return FALSE;
6725bdbf
AM		 810
811 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
812 htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt");
813 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
814 if (!info->shared)
815 htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
816
817 if (!htab->splt || !htab->srelplt || !htab->sdynbss
818 || (!info->shared && !htab->srelbss))
819 abort ();
820
711de32c
RS		 821 if (htab->is_vxworks
822 && !elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
823 return FALSE;
eac338cf 824
b34976b6 825 return TRUE;
6725bdbf
AM		 826}
827
ebe50bae
AM		 828/* Copy the extra info we tack onto an elf_link_hash_entry. */
829
51b64d56 830static void
fcfa13d2 831elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 832 struct elf_link_hash_entry *dir,
833 struct elf_link_hash_entry *ind)
ebe50bae
AM		 834{
835 struct elf_i386_link_hash_entry *edir, *eind;
836
837 edir = (struct elf_i386_link_hash_entry *) dir;
838 eind = (struct elf_i386_link_hash_entry *) ind;
839
bbd7ec4a 840 if (eind->dyn_relocs != NULL)
ebe50bae 841 {
bbd7ec4a
AM		 842 if (edir->dyn_relocs != NULL)
843 {
844 struct elf_i386_dyn_relocs **pp;
845 struct elf_i386_dyn_relocs *p;
846
fcfa13d2 847 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 848 list. Merge any entries against the same section. */
849 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
850 {
851 struct elf_i386_dyn_relocs *q;
852
853 for (q = edir->dyn_relocs; q != NULL; q = q->next)
854 if (q->sec == p->sec)
855 {
856 q->pc_count += p->pc_count;
857 q->count += p->count;
858 *pp = p->next;
859 break;
860 }
861 if (q == NULL)
862 pp = &p->next;
863 }
864 *pp = edir->dyn_relocs;
865 }
866
ebe50bae
AM		 867 edir->dyn_relocs = eind->dyn_relocs;
868 eind->dyn_relocs = NULL;
869 }
ebe50bae 870
cd67d266
JJ		 871 if (ind->root.type == bfd_link_hash_indirect
872 && dir->got.refcount <= 0)
873 {
874 edir->tls_type = eind->tls_type;
875 eind->tls_type = GOT_UNKNOWN;
876 }
81848ca0
AM		 877
878 if (ELIMINATE_COPY_RELOCS
879 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 880 && dir->dynamic_adjusted)
881 {
882 /* If called to transfer flags for a weakdef during processing
883 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
884 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
885 dir->ref_dynamic |= ind->ref_dynamic;
886 dir->ref_regular |= ind->ref_regular;
887 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
888 dir->needs_plt |= ind->needs_plt;
889 dir->pointer_equality_needed |= ind->pointer_equality_needed;
890 }
81848ca0 891 else
fcfa13d2 892 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
ebe50bae
AM		 893}
894
13ae64f3 895static int
55fd94b0 896elf_i386_tls_transition (struct bfd_link_info *info, int r_type, int is_local)
13ae64f3
JJ		 897{
898 if (info->shared)
899 return r_type;
900
901 switch (r_type)
902 {
903 case R_386_TLS_GD:
67a4f2b7
AO		 904 case R_386_TLS_GOTDESC:
905 case R_386_TLS_DESC_CALL:
13ae64f3
JJ		 906 case R_386_TLS_IE_32:
907 if (is_local)
908 return R_386_TLS_LE_32;
909 return R_386_TLS_IE_32;
37e55690
JJ		 910 case R_386_TLS_IE:
911 case R_386_TLS_GOTIE:
912 if (is_local)
913 return R_386_TLS_LE_32;
914 return r_type;
13ae64f3
JJ		 915 case R_386_TLS_LDM:
916 return R_386_TLS_LE_32;
917 }
918
919 return r_type;
920}
921
252b5132 922/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 923 calculate needed space in the global offset table, procedure linkage
924 table, and dynamic reloc sections. */
252b5132 925
b34976b6 926static bfd_boolean
55fd94b0
AM		 927elf_i386_check_relocs (bfd *abfd,
928 struct bfd_link_info *info,
929 asection *sec,
930 const Elf_Internal_Rela *relocs)
252b5132 931{
6725bdbf 932 struct elf_i386_link_hash_table *htab;
252b5132
RH		 933 Elf_Internal_Shdr *symtab_hdr;
934 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 935 const Elf_Internal_Rela *rel;
936 const Elf_Internal_Rela *rel_end;
252b5132
RH		 937 asection *sreloc;
938
1049f94e 939 if (info->relocatable)
b34976b6 940 return TRUE;
252b5132 941
6725bdbf 942 htab = elf_i386_hash_table (info);
252b5132
RH		 943 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
944 sym_hashes = elf_sym_hashes (abfd);
252b5132 945
252b5132
RH		 946 sreloc = NULL;
947
948 rel_end = relocs + sec->reloc_count;
949 for (rel = relocs; rel < rel_end; rel++)
950 {
13ae64f3 951 unsigned int r_type;
252b5132
RH		 952 unsigned long r_symndx;
953 struct elf_link_hash_entry *h;
954
955 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 956 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 957
d9bc7a44 958 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 959 {
d003868e
AM		 960 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
961 abfd,
8f615d07 962 r_symndx);
b34976b6 963 return FALSE;
f5f31454
L		 964 }
965
252b5132
RH		 966 if (r_symndx < symtab_hdr->sh_info)
967 h = NULL;
968 else
71cb9464
L		 969 {
970 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
971 while (h->root.type == bfd_link_hash_indirect
972 || h->root.type == bfd_link_hash_warning)
973 h = (struct elf_link_hash_entry *) h->root.u.i.link;
974 }
252b5132 975
13ae64f3
JJ		 976 r_type = elf_i386_tls_transition (info, r_type, h == NULL);
977
978 switch (r_type)
252b5132 979 {
37e55690
JJ		 980 case R_386_TLS_LDM:
981 htab->tls_ldm_got.refcount += 1;
982 goto create_got;
983
984 case R_386_PLT32:
985 /* This symbol requires a procedure linkage table entry. We
986 actually build the entry in adjust_dynamic_symbol,
987 because this might be a case of linking PIC code which is
988 never referenced by a dynamic object, in which case we
989 don't need to generate a procedure linkage table entry
990 after all. */
991
992 /* If this is a local symbol, we resolve it directly without
993 creating a procedure linkage table entry. */
994 if (h == NULL)
995 continue;
996
f5385ebf 997 h->needs_plt = 1;
37e55690
JJ		 998 h->plt.refcount += 1;
999 break;
1000
13ae64f3 1001 case R_386_TLS_IE_32:
37e55690
JJ		 1002 case R_386_TLS_IE:
1003 case R_386_TLS_GOTIE:
13ae64f3
JJ		 1004 if (info->shared)
1005 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 1006 /* Fall through */
1007
252b5132 1008 case R_386_GOT32:
13ae64f3 1009 case R_386_TLS_GD:
67a4f2b7
AO		 1010 case R_386_TLS_GOTDESC:
1011 case R_386_TLS_DESC_CALL:
252b5132 1012 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1013 {
1014 int tls_type, old_tls_type;
1015
1016 switch (r_type)
1017 {
1018 default:
1019 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1020 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1021 case R_386_TLS_GOTDESC:
1022 case R_386_TLS_DESC_CALL:
1023 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1024 case R_386_TLS_IE_32:
1025 if (ELF32_R_TYPE (rel->r_info) == r_type)
1026 tls_type = GOT_TLS_IE_NEG;
1027 else
ebcfb3c0
JJ		 1028 /* If this is a GD->IE transition, we may use either of
1029 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ		 1030 tls_type = GOT_TLS_IE;
1031 break;
1032 case R_386_TLS_IE:
1033 case R_386_TLS_GOTIE:
1034 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ		 1035 }
1036
1037 if (h != NULL)
1038 {
1039 h->got.refcount += 1;
1040 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1041 }
1042 else
1043 {
1044 bfd_signed_vma *local_got_refcounts;
1045
1046 /* This is a global offset table entry for a local symbol. */
1047 local_got_refcounts = elf_local_got_refcounts (abfd);
1048 if (local_got_refcounts == NULL)
1049 {
1050 bfd_size_type size;
1051
1052 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1053 size *= (sizeof (bfd_signed_vma)
1054 + sizeof (bfd_vma) + sizeof(char));
55fd94b0 1055 local_got_refcounts = bfd_zalloc (abfd, size);
13ae64f3 1056 if (local_got_refcounts == NULL)
b34976b6 1057 return FALSE;
13ae64f3 1058 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO		 1059 elf_i386_local_tlsdesc_gotent (abfd)
1060 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1061 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1062 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ		 1063 }
1064 local_got_refcounts[r_symndx] += 1;
1065 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1066 }
1067
37e55690
JJ		 1068 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1069 tls_type |= old_tls_type;
13ae64f3
JJ		 1070 /* If a TLS symbol is accessed using IE at least once,
1071 there is no point to use dynamic model for it. */
ebcfb3c0 1072 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1073 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1074 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1075 {
67a4f2b7 1076 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1077 tls_type = old_tls_type;
67a4f2b7
AO		 1078 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1079 && GOT_TLS_GD_ANY_P (tls_type))
1080 tls_type |= old_tls_type;
13ae64f3
JJ		 1081 else
1082 {
1083 (*_bfd_error_handler)
d003868e 1084 (_("%B: `%s' accessed both as normal and "
55fd94b0 1085 "thread local symbol"),
d003868e 1086 abfd,
37e55690 1087 h ? h->root.root.string : "<local>");
b34976b6 1088 return FALSE;
13ae64f3
JJ		 1089 }
1090 }
1091
1092 if (old_tls_type != tls_type)
1093 {
1094 if (h != NULL)
1095 elf_i386_hash_entry (h)->tls_type = tls_type;
1096 else
1097 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1098 }
1099 }
0ac8d2ca
AM		 1100 /* Fall through */
1101
1102 case R_386_GOTOFF:
1103 case R_386_GOTPC:
13ae64f3 1104 create_got:
0ac8d2ca
AM		 1105 if (htab->sgot == NULL)
1106 {
1107 if (htab->elf.dynobj == NULL)
1108 htab->elf.dynobj = abfd;
1109 if (!create_got_section (htab->elf.dynobj, info))
b34976b6 1110 return FALSE;
0ac8d2ca 1111 }
37e55690
JJ		 1112 if (r_type != R_386_TLS_IE)
1113 break;
1114 /* Fall through */
252b5132 1115
37e55690
JJ		 1116 case R_386_TLS_LE_32:
1117 case R_386_TLS_LE:
1118 if (!info->shared)
1119 break;
bffbf940 1120 info->flags |= DF_STATIC_TLS;
b34976b6 1121 /* Fall through */
252b5132
RH		 1122
1123 case R_386_32:
1124 case R_386_PC32:
12d0ee4a 1125 if (h != NULL && !info->shared)
6725bdbf 1126 {
12d0ee4a 1127 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1128 need a copy reloc. We can't check reliably at this
1129 stage whether the section is read-only, as input
1130 sections have not yet been mapped to output sections.
1131 Tentatively set the flag for now, and correct in
1132 adjust_dynamic_symbol. */
f5385ebf 1133 h->non_got_ref = 1;
12d0ee4a
AM		 1134
1135 /* We may need a .plt entry if the function this reloc
1136 refers to is in a shared lib. */
51b64d56 1137 h->plt.refcount += 1;
c6585bbb 1138 if (r_type != R_386_PC32)
f5385ebf 1139 h->pointer_equality_needed = 1;
6725bdbf 1140 }
7843f00e 1141
252b5132 1142 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1143 against a global symbol, or a non PC relative reloc
1144 against a local symbol, then we need to copy the reloc
1145 into the shared library. However, if we are linking with
1146 -Bsymbolic, we do not need to copy a reloc against a
1147 global symbol which is defined in an object we are
1148 including in the link (i.e., DEF_REGULAR is set). At
1149 this point we have not seen all the input files, so it is
1150 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1151 later (it is never cleared). In case of a weak definition,
1152 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1153 a shared library. We account for that possibility below by
1f655a09
L		 1154 storing information in the relocs_copied field of the hash
1155 table entry. A similar situation occurs when creating
1156 shared libraries and symbol visibility changes render the
12d0ee4a 1157 symbol local.
56882138 1158
12d0ee4a
AM		 1159 If on the other hand, we are creating an executable, we
1160 may need to keep relocations for symbols satisfied by a
1161 dynamic library if we manage to avoid copy relocs for the
1162 symbol. */
1163 if ((info->shared
1164 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1165 && (r_type != R_386_PC32
12d0ee4a 1166 || (h != NULL
55255dae 1167 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1168 || h->root.type == bfd_link_hash_defweak
f5385ebf 1169 || !h->def_regular))))
a23b6845
AM		 1170 || (ELIMINATE_COPY_RELOCS
1171 && !info->shared
12d0ee4a
AM		 1172 && (sec->flags & SEC_ALLOC) != 0
1173 && h != NULL
12d0ee4a 1174 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1175 || !h->def_regular)))
252b5132 1176 {
ec338859
AM		 1177 struct elf_i386_dyn_relocs *p;
1178 struct elf_i386_dyn_relocs **head;
1179
12d0ee4a
AM		 1180 /* We must copy these reloc types into the output file.
1181 Create a reloc section in dynobj and make room for
1182 this reloc. */
252b5132
RH		 1183 if (sreloc == NULL)
1184 {
1185 const char *name;
0ac8d2ca 1186 bfd *dynobj;
e92d460e
AM		 1187 unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
1188 unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name;
252b5132 1189
e92d460e 1190 name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
252b5132 1191 if (name == NULL)
b34976b6 1192 return FALSE;
252b5132 1193
0112cd26 1194 if (! CONST_STRNEQ (name, ".rel")
c8492176
L		 1195 || strcmp (bfd_get_section_name (abfd, sec),
1196 name + 4) != 0)
1197 {
0c715baa 1198 (*_bfd_error_handler)
d003868e
AM		 1199 (_("%B: bad relocation section name `%s\'"),
1200 abfd, name);
f5f31454 1201 }
252b5132 1202
0ac8d2ca
AM		 1203 if (htab->elf.dynobj == NULL)
1204 htab->elf.dynobj = abfd;
1205
1206 dynobj = htab->elf.dynobj;
252b5132
RH		 1207 sreloc = bfd_get_section_by_name (dynobj, name);
1208 if (sreloc == NULL)
1209 {
1210 flagword flags;
1211
252b5132
RH		 1212 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1213 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1214 if ((sec->flags & SEC_ALLOC) != 0)
1215 flags |= SEC_ALLOC | SEC_LOAD;
3496cb2a
L		 1216 sreloc = bfd_make_section_with_flags (dynobj,
1217 name,
1218 flags);
252b5132 1219 if (sreloc == NULL
252b5132 1220 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
b34976b6 1221 return FALSE;
252b5132 1222 }
0c715baa 1223 elf_section_data (sec)->sreloc = sreloc;
252b5132
RH		 1224 }
1225
0c715baa
AM		 1226 /* If this is a global symbol, we count the number of
1227 relocations we need for this symbol. */
1228 if (h != NULL)
252b5132 1229 {
ec338859 1230 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
0c715baa
AM		 1231 }
1232 else
1233 {
e81d3500 1234 void **vpp;
ec338859
AM		 1235 /* Track dynamic relocs needed for local syms too.
1236 We really need local syms available to do this
1237 easily. Oh well. */
1238
1239 asection *s;
1240 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1241 sec, r_symndx);
1242 if (s == NULL)
b34976b6 1243 return FALSE;
ec338859 1244
e81d3500
DD		 1245 vpp = &elf_section_data (s)->local_dynrel;
1246 head = (struct elf_i386_dyn_relocs **)vpp;
ec338859
AM		 1247 }
1248
1249 p = *head;
1250 if (p == NULL || p->sec != sec)
1251 {
1252 bfd_size_type amt = sizeof *p;
55fd94b0 1253 p = bfd_alloc (htab->elf.dynobj, amt);
ec338859 1254 if (p == NULL)
b34976b6 1255 return FALSE;
ec338859
AM		 1256 p->next = *head;
1257 *head = p;
1258 p->sec = sec;
1259 p->count = 0;
1260 p->pc_count = 0;
252b5132 1261 }
ec338859
AM		 1262
1263 p->count += 1;
13ae64f3 1264 if (r_type == R_386_PC32)
ec338859 1265 p->pc_count += 1;
252b5132 1266 }
252b5132
RH		 1267 break;
1268
1269 /* This relocation describes the C++ object vtable hierarchy.
1270 Reconstruct it for later use during GC. */
1271 case R_386_GNU_VTINHERIT:
c152c796 1272 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1273 return FALSE;
252b5132
RH		 1274 break;
1275
1276 /* This relocation describes which C++ vtable entries are actually
1277 used. Record for later use during GC. */
1278 case R_386_GNU_VTENTRY:
c152c796 1279 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
b34976b6 1280 return FALSE;
252b5132
RH		 1281 break;
1282
1283 default:
1284 break;
1285 }
1286 }
1287
b34976b6 1288 return TRUE;
252b5132
RH		 1289}
1290
1291/* Return the section that should be marked against GC for a given
1292 relocation. */
1293
1294static asection *
55fd94b0 1295elf_i386_gc_mark_hook (asection *sec,
07adf181 1296 struct bfd_link_info *info,
55fd94b0
AM		 1297 Elf_Internal_Rela *rel,
1298 struct elf_link_hash_entry *h,
1299 Elf_Internal_Sym *sym)
252b5132
RH		 1300{
1301 if (h != NULL)
07adf181
AM		 1302 switch (ELF32_R_TYPE (rel->r_info))
1303 {
1304 case R_386_GNU_VTINHERIT:
1305 case R_386_GNU_VTENTRY:
1306 return NULL;
1307 }
1308
1309 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 1310}
1311
1312/* Update the got entry reference counts for the section being removed. */
1313
b34976b6 1314static bfd_boolean
55fd94b0
AM		 1315elf_i386_gc_sweep_hook (bfd *abfd,
1316 struct bfd_link_info *info,
1317 asection *sec,
1318 const Elf_Internal_Rela *relocs)
252b5132 1319{
dd5724d5
AM		 1320 Elf_Internal_Shdr *symtab_hdr;
1321 struct elf_link_hash_entry **sym_hashes;
1322 bfd_signed_vma *local_got_refcounts;
1323 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1324
ec338859 1325 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1326
6725bdbf
AM		 1327 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1328 sym_hashes = elf_sym_hashes (abfd);
1329 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1330
1331 relend = relocs + sec->reloc_count;
1332 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1333 {
1334 unsigned long r_symndx;
1335 unsigned int r_type;
1336 struct elf_link_hash_entry *h = NULL;
37e55690 1337
26e41594
AM		 1338 r_symndx = ELF32_R_SYM (rel->r_info);
1339 if (r_symndx >= symtab_hdr->sh_info)
1340 {
1341 struct elf_i386_link_hash_entry *eh;
1342 struct elf_i386_dyn_relocs **pp;
1343 struct elf_i386_dyn_relocs *p;
dd5724d5 1344
26e41594 1345 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1346 while (h->root.type == bfd_link_hash_indirect
1347 || h->root.type == bfd_link_hash_warning)
1348 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1349 eh = (struct elf_i386_link_hash_entry *) h;
0c715baa 1350
26e41594
AM		 1351 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1352 if (p->sec == sec)
1353 {
1354 /* Everything must go for SEC. */
1355 *pp = p->next;
1356 break;
1357 }
1358 }
0c715baa 1359
26e41594
AM		 1360 r_type = ELF32_R_TYPE (rel->r_info);
1361 r_type = elf_i386_tls_transition (info, r_type, h != NULL);
1362 switch (r_type)
1363 {
1364 case R_386_TLS_LDM:
1365 if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0)
1366 elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1;
1367 break;
0c715baa 1368
26e41594 1369 case R_386_TLS_GD:
67a4f2b7
AO		 1370 case R_386_TLS_GOTDESC:
1371 case R_386_TLS_DESC_CALL:
26e41594
AM		 1372 case R_386_TLS_IE_32:
1373 case R_386_TLS_IE:
1374 case R_386_TLS_GOTIE:
1375 case R_386_GOT32:
1376 if (h != NULL)
1377 {
1378 if (h->got.refcount > 0)
1379 h->got.refcount -= 1;
1380 }
1381 else if (local_got_refcounts != NULL)
1382 {
1383 if (local_got_refcounts[r_symndx] > 0)
1384 local_got_refcounts[r_symndx] -= 1;
1385 }
1386 break;
0c715baa 1387
26e41594
AM		 1388 case R_386_32:
1389 case R_386_PC32:
1390 if (info->shared)
1391 break;
1392 /* Fall through */
6725bdbf 1393
26e41594
AM		 1394 case R_386_PLT32:
1395 if (h != NULL)
1396 {
1397 if (h->plt.refcount > 0)
1398 h->plt.refcount -= 1;
1399 }
1400 break;
dd5724d5 1401
26e41594
AM		 1402 default:
1403 break;
1404 }
1405 }
252b5132 1406
b34976b6 1407 return TRUE;
252b5132
RH		 1408}
1409
1410/* Adjust a symbol defined by a dynamic object and referenced by a
1411 regular object. The current definition is in some section of the
1412 dynamic object, but we're not including those sections. We have to
1413 change the definition to something the rest of the link can
1414 understand. */
1415
b34976b6 1416static bfd_boolean
55fd94b0
AM		 1417elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
1418 struct elf_link_hash_entry *h)
252b5132 1419{
6725bdbf 1420 struct elf_i386_link_hash_table *htab;
252b5132 1421 asection *s;
252b5132 1422
252b5132
RH		 1423 /* If this is a function, put it in the procedure linkage table. We
1424 will fill in the contents of the procedure linkage table later,
1425 when we know the address of the .got section. */
1426 if (h->type == STT_FUNC
f5385ebf 1427 || h->needs_plt)
252b5132 1428 {
6725bdbf 1429 if (h->plt.refcount <= 0
9c7a29a3
AM		 1430 || SYMBOL_CALLS_LOCAL (info, h)
1431 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1432 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 1433 {
1434 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 1435 file, but the symbol was never referred to by a dynamic
1436 object, or if all references were garbage collected. In
1437 such a case, we don't actually need to build a procedure
1438 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 1439 h->plt.offset = (bfd_vma) -1;
f5385ebf 1440 h->needs_plt = 0;
252b5132
RH		 1441 }
1442
b34976b6 1443 return TRUE;
252b5132 1444 }
6725bdbf
AM		 1445 else
1446 /* It's possible that we incorrectly decided a .plt reloc was
1447 needed for an R_386_PC32 reloc to a non-function sym in
1448 check_relocs. We can't decide accurately between function and
1449 non-function syms in check-relocs; Objects loaded later in
1450 the link may change h->type. So fix it now. */
bbd7ec4a 1451 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 1452
1453 /* If this is a weak symbol, and there is a real definition, the
1454 processor independent code will have arranged for us to see the
1455 real definition first, and we can just use the same value. */
f6e332e6 1456 if (h->u.weakdef != NULL)
252b5132 1457 {
f6e332e6
AM		 1458 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1459 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1460 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1461 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 1462 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1463 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1464 return TRUE;
252b5132
RH		 1465 }
1466
1467 /* This is a reference to a symbol defined by a dynamic object which
1468 is not a function. */
1469
1470 /* If we are creating a shared library, we must presume that the
1471 only references to the symbol are via the global offset table.
1472 For such cases we need not do anything here; the relocations will
1473 be handled correctly by relocate_section. */
1474 if (info->shared)
b34976b6 1475 return TRUE;
252b5132 1476
7843f00e
ILT		 1477 /* If there are no references to this symbol that do not use the
1478 GOT, we don't need to generate a copy reloc. */
f5385ebf 1479 if (!h->non_got_ref)
b34976b6 1480 return TRUE;
7843f00e 1481
8bd621d8
AM		 1482 /* If -z nocopyreloc was given, we won't generate them either. */
1483 if (info->nocopyreloc)
1484 {
f5385ebf 1485 h->non_got_ref = 0;
b34976b6 1486 return TRUE;
8bd621d8
AM		 1487 }
1488
643796e3
DJ		 1489 htab = elf_i386_hash_table (info);
1490
1491 /* If there aren't any dynamic relocs in read-only sections, then
1492 we can keep the dynamic relocs and avoid the copy reloc. This
1493 doesn't work on VxWorks, where we can not have dynamic relocations
1494 (other than copy and jump slot relocations) in an executable. */
1495 if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks)
ebe50bae 1496 {
a23b6845
AM		 1497 struct elf_i386_link_hash_entry * eh;
1498 struct elf_i386_dyn_relocs *p;
ebe50bae 1499
a23b6845
AM		 1500 eh = (struct elf_i386_link_hash_entry *) h;
1501 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1502 {
1503 s = p->sec->output_section;
1504 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1505 break;
1506 }
1507
a23b6845
AM		 1508 if (p == NULL)
1509 {
f5385ebf 1510 h->non_got_ref = 0;
a23b6845
AM		 1511 return TRUE;
1512 }
ebe50bae
AM		 1513 }
1514
909272ee
AM		 1515 if (h->size == 0)
1516 {
1517 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1518 h->root.root.string);
1519 return TRUE;
1520 }
1521
252b5132
RH		 1522 /* We must allocate the symbol in our .dynbss section, which will
1523 become part of the .bss section of the executable. There will be
1524 an entry for this symbol in the .dynsym section. The dynamic
1525 object will contain position independent code, so all references
1526 from the dynamic object to this symbol will go through the global
1527 offset table. The dynamic linker will use the .dynsym entry to
1528 determine the address it must put in the global offset table, so
1529 both the dynamic object and the regular object will refer to the
1530 same memory location for the variable. */
1531
252b5132
RH		 1532 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
1533 copy the initial value out of the dynamic object and into the
0ac8d2ca 1534 runtime process image. */
252b5132
RH		 1535 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1536 {
eea6121a 1537 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 1538 h->needs_copy = 1;
252b5132
RH		 1539 }
1540
0ac8d2ca 1541 s = htab->sdynbss;
252b5132 1542
027297b7 1543 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH		 1544}
1545
6725bdbf 1546/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 1547 dynamic relocs. */
6725bdbf 1548
b34976b6 1549static bfd_boolean
55fd94b0 1550allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 1551{
1552 struct bfd_link_info *info;
1553 struct elf_i386_link_hash_table *htab;
5a15f56f 1554 struct elf_i386_link_hash_entry *eh;
0c715baa 1555 struct elf_i386_dyn_relocs *p;
6725bdbf 1556
e92d460e 1557 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1558 return TRUE;
6725bdbf 1559
e92d460e
AM		 1560 if (h->root.type == bfd_link_hash_warning)
1561 /* When warning symbols are created, they **replace** the "real"
1562 entry in the hash table, thus we never get to see the real
1563 symbol in a hash traversal. So look at it now. */
1564 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1565
6725bdbf
AM		 1566 info = (struct bfd_link_info *) inf;
1567 htab = elf_i386_hash_table (info);
1568
ebe50bae 1569 if (htab->elf.dynamic_sections_created
9c7a29a3 1570 && h->plt.refcount > 0)
6725bdbf 1571 {
5a15f56f
AM		 1572 /* Make sure this symbol is output as a dynamic symbol.
1573 Undefined weak syms won't yet be marked as dynamic. */
1574 if (h->dynindx == -1
f5385ebf 1575 && !h->forced_local)
5a15f56f 1576 {
c152c796 1577 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1578 return FALSE;
5a15f56f
AM		 1579 }
1580
4e795f50
AM		 1581 if (info->shared
1582 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 1583 {
0ac8d2ca 1584 asection *s = htab->splt;
6725bdbf 1585
ced53ee5
AM		 1586 /* If this is the first .plt entry, make room for the special
1587 first entry. */
eea6121a
AM		 1588 if (s->size == 0)
1589 s->size += PLT_ENTRY_SIZE;
6725bdbf 1590
eea6121a 1591 h->plt.offset = s->size;
6725bdbf 1592
ced53ee5
AM		 1593 /* If this symbol is not defined in a regular file, and we are
1594 not generating a shared library, then set the symbol to this
1595 location in the .plt. This is required to make function
1596 pointers compare as equal between the normal executable and
1597 the shared library. */
1598 if (! info->shared
f5385ebf 1599 && !h->def_regular)
ced53ee5
AM		 1600 {
1601 h->root.u.def.section = s;
1602 h->root.u.def.value = h->plt.offset;
1603 }
6725bdbf 1604
ced53ee5 1605 /* Make room for this entry. */
eea6121a 1606 s->size += PLT_ENTRY_SIZE;
6725bdbf 1607
ced53ee5
AM		 1608 /* We also need to make an entry in the .got.plt section, which
1609 will be placed in the .got section by the linker script. */
eea6121a 1610 htab->sgotplt->size += 4;
6725bdbf 1611
6725bdbf 1612 /* We also need to make an entry in the .rel.plt section. */
eea6121a 1613 htab->srelplt->size += sizeof (Elf32_External_Rel);
5ae0bfb6 1614 htab->next_tls_desc_index++;
eac338cf
PB		 1615
1616 if (htab->is_vxworks && !info->shared)
1617 {
1618 /* VxWorks has a second set of relocations for each PLT entry
1619 in executables. They go in a separate relocation section,
1620 which is processed by the kernel loader. */
1621
1622 /* There are two relocations for the initial PLT entry: an
1623 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
1624 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
1625
1626 if (h->plt.offset == PLT_ENTRY_SIZE)
1627 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
1628
1629 /* There are two extra relocations for each subsequent PLT entry:
1630 an R_386_32 relocation for the GOT entry, and an R_386_32
1631 relocation for the PLT entry. */
1632
1633 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
1634 }
6725bdbf 1635 }
ced53ee5
AM		 1636 else
1637 {
51b64d56 1638 h->plt.offset = (bfd_vma) -1;
f5385ebf 1639 h->needs_plt = 0;
ced53ee5 1640 }
6725bdbf
AM		 1641 }
1642 else
1643 {
51b64d56 1644 h->plt.offset = (bfd_vma) -1;
f5385ebf 1645 h->needs_plt = 0;
6725bdbf
AM		 1646 }
1647
67a4f2b7
AO		 1648 eh = (struct elf_i386_link_hash_entry *) h;
1649 eh->tlsdesc_got = (bfd_vma) -1;
1650
37e55690 1651 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 1652 make it a R_386_TLS_LE_32 requiring no TLS entry. */
1653 if (h->got.refcount > 0
1654 && !info->shared
1655 && h->dynindx == -1
37e55690 1656 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 1657 h->got.offset = (bfd_vma) -1;
13ae64f3 1658 else if (h->got.refcount > 0)
6725bdbf 1659 {
0ac8d2ca 1660 asection *s;
b34976b6 1661 bfd_boolean dyn;
13ae64f3 1662 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 1663
5a15f56f
AM		 1664 /* Make sure this symbol is output as a dynamic symbol.
1665 Undefined weak syms won't yet be marked as dynamic. */
1666 if (h->dynindx == -1
f5385ebf 1667 && !h->forced_local)
5a15f56f 1668 {
c152c796 1669 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1670 return FALSE;
5a15f56f
AM		 1671 }
1672
6725bdbf 1673 s = htab->sgot;
67a4f2b7
AO		 1674 if (GOT_TLS_GDESC_P (tls_type))
1675 {
1676 eh->tlsdesc_got = htab->sgotplt->size
1677 - elf_i386_compute_jump_table_size (htab);
1678 htab->sgotplt->size += 8;
1679 h->got.offset = (bfd_vma) -2;
1680 }
1681 if (! GOT_TLS_GDESC_P (tls_type)
1682 || GOT_TLS_GD_P (tls_type))
1683 {
1684 h->got.offset = s->size;
1685 s->size += 4;
1686 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
1687 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
1688 s->size += 4;
1689 }
ebe50bae 1690 dyn = htab->elf.dynamic_sections_created;
13ae64f3 1691 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 1692 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
1693 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
1694 need two), R_386_TLS_GD needs one if local symbol and two if
1695 global. */
1696 if (tls_type == GOT_TLS_IE_BOTH)
eea6121a 1697 htab->srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 1698 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 1699 || (tls_type & GOT_TLS_IE))
eea6121a 1700 htab->srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 1701 else if (GOT_TLS_GD_P (tls_type))
eea6121a 1702 htab->srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 1703 else if (! GOT_TLS_GDESC_P (tls_type)
1704 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1705 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 1706 && (info->shared
1707 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
eea6121a 1708 htab->srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7
AO		 1709 if (GOT_TLS_GDESC_P (tls_type))
1710 htab->srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 1711 }
1712 else
51b64d56 1713 h->got.offset = (bfd_vma) -1;
6725bdbf 1714
5a15f56f 1715 if (eh->dyn_relocs == NULL)
b34976b6 1716 return TRUE;
5a15f56f 1717
0c715baa
AM		 1718 /* In the shared -Bsymbolic case, discard space allocated for
1719 dynamic pc-relative relocs against symbols which turn out to be
1720 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 1721 space for pc-relative relocs that have become local due to symbol
1722 visibility changes. */
0c715baa
AM		 1723
1724 if (info->shared)
5a15f56f 1725 {
09695f56
AM		 1726 /* The only reloc that uses pc_count is R_386_PC32, which will
1727 appear on a call or on something like ".long foo - .". We
1728 want calls to protected symbols to resolve directly to the
1729 function rather than going via the plt. If people want
1730 function pointer comparisons to work as expected then they
1731 should avoid writing assembly like ".long foo - .". */
1732 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 1733 {
0c715baa
AM		 1734 struct elf_i386_dyn_relocs **pp;
1735
1736 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1737 {
1738 p->count -= p->pc_count;
1739 p->pc_count = 0;
1740 if (p->count == 0)
1741 *pp = p->next;
1742 else
1743 pp = &p->next;
1744 }
5a15f56f 1745 }
4e795f50
AM		 1746
1747 /* Also discard relocs on undefined weak syms with non-default
1748 visibility. */
22d606e9 1749 if (eh->dyn_relocs != NULL
4e795f50 1750 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1751 {
1752 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1753 eh->dyn_relocs = NULL;
1754
1755 /* Make sure undefined weak symbols are output as a dynamic
1756 symbol in PIEs. */
1757 else if (h->dynindx == -1
1758 && !h->forced_local)
1759 {
1760 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1761 return FALSE;
1762 }
1763 }
0c715baa 1764 }
a23b6845 1765 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 1766 {
1767 /* For the non-shared case, discard space for relocs against
1768 symbols which turn out to need copy relocs or are not
1769 dynamic. */
1770
f5385ebf
AM		 1771 if (!h->non_got_ref
1772 && ((h->def_dynamic
1773 && !h->def_regular)
ebe50bae 1774 || (htab->elf.dynamic_sections_created
0c715baa
AM		 1775 && (h->root.type == bfd_link_hash_undefweak
1776 || h->root.type == bfd_link_hash_undefined))))
1777 {
1778 /* Make sure this symbol is output as a dynamic symbol.
1779 Undefined weak syms won't yet be marked as dynamic. */
1780 if (h->dynindx == -1
f5385ebf 1781 && !h->forced_local)
0c715baa 1782 {
c152c796 1783 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1784 return FALSE;
0c715baa 1785 }
5a15f56f 1786
0c715baa
AM		 1787 /* If that succeeded, we know we'll be keeping all the
1788 relocs. */
1789 if (h->dynindx != -1)
1790 goto keep;
1791 }
1792
1793 eh->dyn_relocs = NULL;
1794
ec338859 1795 keep: ;
5a15f56f
AM		 1796 }
1797
0c715baa
AM		 1798 /* Finally, allocate space. */
1799 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 1800 {
0c715baa 1801 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1802 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 1803 }
1804
b34976b6 1805 return TRUE;
6725bdbf
AM		 1806}
1807
0c715baa
AM		 1808/* Find any dynamic relocs that apply to read-only sections. */
1809
b34976b6 1810static bfd_boolean
55fd94b0 1811readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 1812{
1813 struct elf_i386_link_hash_entry *eh;
1814 struct elf_i386_dyn_relocs *p;
1815
e92d460e
AM		 1816 if (h->root.type == bfd_link_hash_warning)
1817 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1818
0c715baa
AM		 1819 eh = (struct elf_i386_link_hash_entry *) h;
1820 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1821 {
1822 asection *s = p->sec->output_section;
1823
1824 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1825 {
1826 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1827
1828 info->flags |= DF_TEXTREL;
1829
1830 /* Not an error, just cut short the traversal. */
b34976b6 1831 return FALSE;
0c715baa
AM		 1832 }
1833 }
b34976b6 1834 return TRUE;
0c715baa
AM		 1835}
1836
252b5132
RH		 1837/* Set the sizes of the dynamic sections. */
1838
b34976b6 1839static bfd_boolean
55fd94b0
AM		 1840elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1841 struct bfd_link_info *info)
252b5132 1842{
6725bdbf 1843 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1844 bfd *dynobj;
1845 asection *s;
b34976b6 1846 bfd_boolean relocs;
0c715baa 1847 bfd *ibfd;
252b5132 1848
6725bdbf 1849 htab = elf_i386_hash_table (info);
ebe50bae 1850 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 1851 if (dynobj == NULL)
1852 abort ();
252b5132 1853
ebe50bae 1854 if (htab->elf.dynamic_sections_created)
252b5132
RH		 1855 {
1856 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 1857 if (info->executable)
252b5132
RH		 1858 {
1859 s = bfd_get_section_by_name (dynobj, ".interp");
ffb2e45b
AM		 1860 if (s == NULL)
1861 abort ();
eea6121a 1862 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 1863 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1864 }
161d71a6 1865 }
6725bdbf 1866
0c715baa
AM		 1867 /* Set up .got offsets for local syms, and space for local dynamic
1868 relocs. */
1869 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 1870 {
1871 bfd_signed_vma *local_got;
1872 bfd_signed_vma *end_local_got;
13ae64f3 1873 char *local_tls_type;
67a4f2b7 1874 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 1875 bfd_size_type locsymcount;
1876 Elf_Internal_Shdr *symtab_hdr;
1877 asection *srel;
6725bdbf 1878
0c715baa 1879 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
161d71a6 1880 continue;
6725bdbf 1881
0c715baa
AM		 1882 for (s = ibfd->sections; s != NULL; s = s->next)
1883 {
ec338859 1884 struct elf_i386_dyn_relocs *p;
0c715baa 1885
e81d3500
DD		 1886 for (p = ((struct elf_i386_dyn_relocs *)
1887 elf_section_data (s)->local_dynrel);
ec338859
AM		 1888 p != NULL;
1889 p = p->next)
0c715baa 1890 {
ec338859
AM		 1891 if (!bfd_is_abs_section (p->sec)
1892 && bfd_is_abs_section (p->sec->output_section))
1893 {
1894 /* Input section has been discarded, either because
1895 it is a copy of a linkonce section or due to
1896 linker script /DISCARD/, so we'll be discarding
1897 the relocs too. */
1898 }
248866a8 1899 else if (p->count != 0)
ec338859
AM		 1900 {
1901 srel = elf_section_data (p->sec)->sreloc;
eea6121a 1902 srel->size += p->count * sizeof (Elf32_External_Rel);
248866a8
AM		 1903 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1904 info->flags |= DF_TEXTREL;
ec338859 1905 }
0c715baa
AM		 1906 }
1907 }
1908
1909 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 1910 if (!local_got)
1911 continue;
6725bdbf 1912
0c715baa 1913 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
161d71a6
L		 1914 locsymcount = symtab_hdr->sh_info;
1915 end_local_got = local_got + locsymcount;
13ae64f3 1916 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 1917 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
161d71a6
L		 1918 s = htab->sgot;
1919 srel = htab->srelgot;
67a4f2b7
AO		 1920 for (; local_got < end_local_got;
1921 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 1922 {
67a4f2b7 1923 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 1924 if (*local_got > 0)
6725bdbf 1925 {
67a4f2b7
AO		 1926 if (GOT_TLS_GDESC_P (*local_tls_type))
1927 {
1928 *local_tlsdesc_gotent = htab->sgotplt->size
1929 - elf_i386_compute_jump_table_size (htab);
1930 htab->sgotplt->size += 8;
1931 *local_got = (bfd_vma) -2;
1932 }
1933 if (! GOT_TLS_GDESC_P (*local_tls_type)
1934 || GOT_TLS_GD_P (*local_tls_type))
1935 {
1936 *local_got = s->size;
1937 s->size += 4;
1938 if (GOT_TLS_GD_P (*local_tls_type)
1939 || *local_tls_type == GOT_TLS_IE_BOTH)
1940 s->size += 4;
1941 }
13ae64f3 1942 if (info->shared
67a4f2b7 1943 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 1944 || (*local_tls_type & GOT_TLS_IE))
1945 {
1946 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 1947 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 1948 else if (GOT_TLS_GD_P (*local_tls_type)
1949 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 1950 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7
AO		 1951 if (GOT_TLS_GDESC_P (*local_tls_type))
1952 htab->srelplt->size += sizeof (Elf32_External_Rel);
37e55690 1953 }
6725bdbf 1954 }
161d71a6
L		 1955 else
1956 *local_got = (bfd_vma) -1;
6725bdbf 1957 }
252b5132 1958 }
6725bdbf 1959
13ae64f3
JJ		 1960 if (htab->tls_ldm_got.refcount > 0)
1961 {
1962 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
1963 relocs. */
eea6121a
AM		 1964 htab->tls_ldm_got.offset = htab->sgot->size;
1965 htab->sgot->size += 8;
1966 htab->srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 1967 }
1968 else
1969 htab->tls_ldm_got.offset = -1;
1970
0c715baa
AM		 1971 /* Allocate global sym .plt and .got entries, and space for global
1972 sym dynamic relocs. */
ebe50bae 1973 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
252b5132 1974
67a4f2b7
AO		 1975 /* For every jump slot reserved in the sgotplt, reloc_count is
1976 incremented. However, when we reserve space for TLS descriptors,
1977 it's not incremented, so in order to compute the space reserved
1978 for them, it suffices to multiply the reloc count by the jump
1979 slot size. */
1980 if (htab->srelplt)
5ae0bfb6 1981 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
67a4f2b7 1982
5a15f56f
AM		 1983 /* We now have determined the sizes of the various dynamic sections.
1984 Allocate memory for them. */
b34976b6 1985 relocs = FALSE;
252b5132
RH		 1986 for (s = dynobj->sections; s != NULL; s = s->next)
1987 {
eac338cf
PB		 1988 bfd_boolean strip_section = TRUE;
1989
252b5132
RH		 1990 if ((s->flags & SEC_LINKER_CREATED) == 0)
1991 continue;
1992
6725bdbf
AM		 1993 if (s == htab->splt
1994 || s == htab->sgot
75ff4589
L		 1995 || s == htab->sgotplt
1996 || s == htab->sdynbss)
252b5132 1997 {
6725bdbf
AM		 1998 /* Strip this section if we don't need it; see the
1999 comment below. */
eac338cf
PB		 2000 /* We'd like to strip these sections if they aren't needed, but if
2001 we've exported dynamic symbols from them we must leave them.
2002 It's too late to tell BFD to get rid of the symbols. */
2003
7325306f 2004 if (htab->elf.hplt != NULL)
eac338cf 2005 strip_section = FALSE;
252b5132 2006 }
0112cd26 2007 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2008 {
eac338cf 2009 if (s->size != 0 && s != htab->srelplt && s != htab->srelplt2)
b34976b6 2010 relocs = TRUE;
252b5132 2011
0ac8d2ca
AM		 2012 /* We use the reloc_count field as a counter if we need
2013 to copy relocs into the output file. */
5ae0bfb6 2014 s->reloc_count = 0;
252b5132 2015 }
6725bdbf 2016 else
252b5132
RH		 2017 {
2018 /* It's not one of our sections, so don't allocate space. */
2019 continue;
2020 }
2021
c456f082 2022 if (s->size == 0)
252b5132 2023 {
0ac8d2ca
AM		 2024 /* If we don't need this section, strip it from the
2025 output file. This is mostly to handle .rel.bss and
2026 .rel.plt. We must create both sections in
2027 create_dynamic_sections, because they must be created
2028 before the linker maps input sections to output
2029 sections. The linker does that before
2030 adjust_dynamic_symbol is called, and it is that
2031 function which decides whether anything needs to go
2032 into these sections. */
c456f082
AM		 2033 if (strip_section)
2034 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2035 continue;
2036 }
2037
c456f082
AM		 2038 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2039 continue;
2040
f69da49f
AM		 2041 /* Allocate memory for the section contents. We use bfd_zalloc
2042 here in case unused entries are not reclaimed before the
2043 section's contents are written out. This should not happen,
2044 but this way if it does, we get a R_386_NONE reloc instead
2045 of garbage. */
eea6121a 2046 s->contents = bfd_zalloc (dynobj, s->size);
6725bdbf 2047 if (s->contents == NULL)
b34976b6 2048 return FALSE;
252b5132
RH		 2049 }
2050
ebe50bae 2051 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2052 {
2053 /* Add some entries to the .dynamic section. We fill in the
2054 values later, in elf_i386_finish_dynamic_sections, but we
2055 must add the entries now so that we get the correct size for
2056 the .dynamic section. The DT_DEBUG entry is filled in by the
2057 dynamic linker and used by the debugger. */
dc810e39 2058#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2059 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2060
36af4a4e 2061 if (info->executable)
252b5132 2062 {
dc810e39 2063 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2064 return FALSE;
252b5132
RH		 2065 }
2066
eea6121a 2067 if (htab->splt->size != 0)
252b5132 2068 {
dc810e39
AM		 2069 if (!add_dynamic_entry (DT_PLTGOT, 0)
2070 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2071 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2072 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2073 return FALSE;
252b5132
RH		 2074 }
2075
2076 if (relocs)
2077 {
dc810e39
AM		 2078 if (!add_dynamic_entry (DT_REL, 0)
2079 || !add_dynamic_entry (DT_RELSZ, 0)
2080 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 2081 return FALSE;
252b5132 2082
0c715baa
AM		 2083 /* If any dynamic relocs apply to a read-only section,
2084 then we need a DT_TEXTREL entry. */
248866a8
AM		 2085 if ((info->flags & DF_TEXTREL) == 0)
2086 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2087 (PTR) info);
0c715baa
AM		 2088
2089 if ((info->flags & DF_TEXTREL) != 0)
2090 {
2091 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2092 return FALSE;
0c715baa 2093 }
252b5132
RH		 2094 }
2095 }
dc810e39 2096#undef add_dynamic_entry
252b5132 2097
b34976b6 2098 return TRUE;
252b5132
RH		 2099}
2100
67a4f2b7
AO		 2101static bfd_boolean
2102elf_i386_always_size_sections (bfd *output_bfd,
2103 struct bfd_link_info *info)
2104{
2105 asection *tls_sec = elf_hash_table (info)->tls_sec;
2106
2107 if (tls_sec)
2108 {
2109 struct elf_link_hash_entry *tlsbase;
2110
2111 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
2112 "_TLS_MODULE_BASE_",
2113 FALSE, FALSE, FALSE);
2114
2115 if (tlsbase && tlsbase->type == STT_TLS)
2116 {
2117 struct bfd_link_hash_entry *bh = NULL;
2118 const struct elf_backend_data *bed
2119 = get_elf_backend_data (output_bfd);
2120
2121 if (!(_bfd_generic_link_add_one_symbol
2122 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
2123 tls_sec, 0, NULL, FALSE,
2124 bed->collect, &bh)))
2125 return FALSE;
2126 tlsbase = (struct elf_link_hash_entry *)bh;
2127 tlsbase->def_regular = 1;
2128 tlsbase->other = STV_HIDDEN;
2129 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
2130 }
2131 }
2132
2133 return TRUE;
2134}
2135
38701953
AM		 2136/* Set the correct type for an x86 ELF section. We do this by the
2137 section name, which is a hack, but ought to work. */
2138
b34976b6 2139static bfd_boolean
55fd94b0
AM		 2140elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2141 Elf_Internal_Shdr *hdr,
2142 asection *sec)
38701953
AM		 2143{
2144 register const char *name;
2145
2146 name = bfd_get_section_name (abfd, sec);
2147
2148 /* This is an ugly, but unfortunately necessary hack that is
2149 needed when producing EFI binaries on x86. It tells
2150 elf.c:elf_fake_sections() not to consider ".reloc" as a section
2151 containing ELF relocation info. We need this hack in order to
2152 be able to generate ELF binaries that can be translated into
2153 EFI applications (which are essentially COFF objects). Those
2154 files contain a COFF ".reloc" section inside an ELFNN object,
2155 which would normally cause BFD to segfault because it would
2156 attempt to interpret this section as containing relocation
2157 entries for section "oc". With this hack enabled, ".reloc"
2158 will be treated as a normal data section, which will avoid the
2159 segfault. However, you won't be able to create an ELFNN binary
2160 with a section named "oc" that needs relocations, but that's
2161 the kind of ugly side-effects you get when detecting section
2162 types based on their names... In practice, this limitation is
2163 unlikely to bite. */
2164 if (strcmp (name, ".reloc") == 0)
2165 hdr->sh_type = SHT_PROGBITS;
2166
b34976b6 2167 return TRUE;
38701953
AM		 2168}
2169
13ae64f3
JJ		 2170/* Return the base VMA address which should be subtracted from real addresses
2171 when resolving @dtpoff relocation.
2172 This is PT_TLS segment p_vaddr. */
2173
2174static bfd_vma
55fd94b0 2175dtpoff_base (struct bfd_link_info *info)
13ae64f3 2176{
e1918d23
AM		 2177 /* If tls_sec is NULL, we should have signalled an error already. */
2178 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 2179 return 0;
e1918d23 2180 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 2181}
2182
2183/* Return the relocation value for @tpoff relocation
2184 if STT_TLS virtual address is ADDRESS. */
2185
2186static bfd_vma
55fd94b0 2187tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 2188{
e1918d23 2189 struct elf_link_hash_table *htab = elf_hash_table (info);
13ae64f3 2190
e1918d23
AM		 2191 /* If tls_sec is NULL, we should have signalled an error already. */
2192 if (htab->tls_sec == NULL)
6a30718d 2193 return 0;
e1918d23 2194 return htab->tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 2195}
2196
252b5132
RH		 2197/* Relocate an i386 ELF section. */
2198
b34976b6 2199static bfd_boolean
55fd94b0
AM		 2200elf_i386_relocate_section (bfd *output_bfd,
2201 struct bfd_link_info *info,
2202 bfd *input_bfd,
2203 asection *input_section,
2204 bfd_byte *contents,
2205 Elf_Internal_Rela *relocs,
2206 Elf_Internal_Sym *local_syms,
2207 asection **local_sections)
252b5132 2208{
6725bdbf 2209 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2210 Elf_Internal_Shdr *symtab_hdr;
2211 struct elf_link_hash_entry **sym_hashes;
2212 bfd_vma *local_got_offsets;
67a4f2b7 2213 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 2214 Elf_Internal_Rela *rel;
2215 Elf_Internal_Rela *relend;
2216
6725bdbf 2217 htab = elf_i386_hash_table (info);
252b5132
RH		 2218 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2219 sym_hashes = elf_sym_hashes (input_bfd);
2220 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 2221 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
252b5132 2222
252b5132
RH		 2223 rel = relocs;
2224 relend = relocs + input_section->reloc_count;
2225 for (; rel < relend; rel++)
2226 {
13ae64f3 2227 unsigned int r_type;
252b5132
RH		 2228 reloc_howto_type *howto;
2229 unsigned long r_symndx;
2230 struct elf_link_hash_entry *h;
2231 Elf_Internal_Sym *sym;
2232 asection *sec;
67a4f2b7 2233 bfd_vma off, offplt;
252b5132 2234 bfd_vma relocation;
b34976b6 2235 bfd_boolean unresolved_reloc;
252b5132 2236 bfd_reloc_status_type r;
1b452ec6 2237 unsigned int indx;
13ae64f3 2238 int tls_type;
252b5132
RH		 2239
2240 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 2241 if (r_type == R_386_GNU_VTINHERIT
2242 || r_type == R_386_GNU_VTENTRY)
252b5132 2243 continue;
dc47f327 2244
55fd94b0 2245 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 2246 && ((indx = r_type - R_386_ext_offset) - R_386_standard
2247 >= R_386_ext - R_386_standard)
2248 && ((indx = r_type - R_386_tls_offset) - R_386_ext
2249 >= R_386_tls - R_386_ext))
252b5132 2250 {
6ba842b6 2251 (*_bfd_error_handler)
d003868e
AM		 2252 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
2253 input_bfd, input_section, r_type);
252b5132 2254 bfd_set_error (bfd_error_bad_value);
b34976b6 2255 return FALSE;
252b5132 2256 }
1b452ec6 2257 howto = elf_howto_table + indx;
252b5132
RH		 2258
2259 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 2260 h = NULL;
2261 sym = NULL;
2262 sec = NULL;
b34976b6 2263 unresolved_reloc = FALSE;
252b5132
RH		 2264 if (r_symndx < symtab_hdr->sh_info)
2265 {
2266 sym = local_syms + r_symndx;
2267 sec = local_sections[r_symndx];
2268 relocation = (sec->output_section->vma
2269 + sec->output_offset
2270 + sym->st_value);
ab96bf03
AM		 2271
2272 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
2273 && ((sec->flags & SEC_MERGE) != 0
2274 || (info->relocatable
2275 && sec->output_offset != 0)))
f8df10f4 2276 {
f8df10f4 2277 bfd_vma addend;
4a335f3d 2278 bfd_byte *where = contents + rel->r_offset;
f8df10f4 2279
4a335f3d 2280 switch (howto->size)
f8df10f4 2281 {
4a335f3d
AM		 2282 case 0:
2283 addend = bfd_get_8 (input_bfd, where);
2284 if (howto->pc_relative)
2285 {
2286 addend = (addend ^ 0x80) - 0x80;
2287 addend += 1;
2288 }
2289 break;
2290 case 1:
2291 addend = bfd_get_16 (input_bfd, where);
2292 if (howto->pc_relative)
2293 {
2294 addend = (addend ^ 0x8000) - 0x8000;
2295 addend += 2;
2296 }
2297 break;
2298 case 2:
2299 addend = bfd_get_32 (input_bfd, where);
2300 if (howto->pc_relative)
2301 {
2302 addend = (addend ^ 0x80000000) - 0x80000000;
2303 addend += 4;
2304 }
2305 break;
2306 default:
2307 abort ();
f8df10f4
JJ		 2308 }
2309
ab96bf03
AM		 2310 if (info->relocatable)
2311 addend += sec->output_offset;
2312 else
2313 {
2314 asection *msec = sec;
2315 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
2316 addend);
2317 addend -= relocation;
2318 addend += msec->output_section->vma + msec->output_offset;
2319 }
4a335f3d
AM		 2320
2321 switch (howto->size)
2322 {
2323 case 0:
16a10388 2324 /* FIXME: overflow checks. */
4a335f3d
AM		 2325 if (howto->pc_relative)
2326 addend -= 1;
2327 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 2328 break;
2329 case 1:
2330 if (howto->pc_relative)
2331 addend -= 2;
2332 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 2333 break;
2334 case 2:
2335 if (howto->pc_relative)
2336 addend -= 4;
2337 bfd_put_32 (input_bfd, addend, where);
2338 break;
2339 }
f8df10f4 2340 }
252b5132
RH		 2341 }
2342 else
2343 {
560e09e9 2344 bfd_boolean warned;
ffb2e45b 2345
b2a8e766
AM		 2346 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2347 r_symndx, symtab_hdr, sym_hashes,
2348 h, sec, relocation,
2349 unresolved_reloc, warned);
252b5132
RH		 2350 }
2351
ab96bf03 2352 if (sec != NULL && elf_discarded_section (sec))
9635fe29 2353 {
ab96bf03
AM		 2354 /* For relocs against symbols from removed linkonce sections,
2355 or sections discarded by a linker script, we just want the
2356 section contents zeroed. Avoid any special processing. */
b1e24c02 2357 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
ab96bf03
AM		 2358 rel->r_info = 0;
2359 rel->r_addend = 0;
b1e24c02 2360 continue;
9635fe29
AM		 2361 }
2362
ab96bf03
AM		 2363 if (info->relocatable)
2364 continue;
2365
252b5132
RH		 2366 switch (r_type)
2367 {
2368 case R_386_GOT32:
2369 /* Relocation is to the entry for this symbol in the global
2370 offset table. */
ffb2e45b
AM		 2371 if (htab->sgot == NULL)
2372 abort ();
252b5132
RH		 2373
2374 if (h != NULL)
2375 {
b34976b6 2376 bfd_boolean dyn;
252b5132
RH		 2377
2378 off = h->got.offset;
ebe50bae 2379 dyn = htab->elf.dynamic_sections_created;
26e41594 2380 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 2381 || (info->shared
586119b3 2382 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 2383 || (ELF_ST_VISIBILITY (h->other)
2384 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2385 {
2386 /* This is actually a static link, or it is a
2387 -Bsymbolic link and the symbol is defined
2388 locally, or the symbol was forced to be local
2389 because of a version file. We must initialize
2390 this entry in the global offset table. Since the
2391 offset must always be a multiple of 4, we use the
2392 least significant bit to record whether we have
2393 initialized it already.
2394
2395 When doing a dynamic link, we create a .rel.got
2396 relocation entry to initialize the value. This
2397 is done in the finish_dynamic_symbol routine. */
2398 if ((off & 1) != 0)
2399 off &= ~1;
2400 else
2401 {
2402 bfd_put_32 (output_bfd, relocation,
6725bdbf 2403 htab->sgot->contents + off);
252b5132
RH		 2404 h->got.offset |= 1;
2405 }
2406 }
8c694914 2407 else
b34976b6 2408 unresolved_reloc = FALSE;
252b5132
RH		 2409 }
2410 else
2411 {
ffb2e45b
AM		 2412 if (local_got_offsets == NULL)
2413 abort ();
252b5132
RH		 2414
2415 off = local_got_offsets[r_symndx];
2416
2417 /* The offset must always be a multiple of 4. We use
83be169b
AM		 2418 the least significant bit to record whether we have
2419 already generated the necessary reloc. */
252b5132
RH		 2420 if ((off & 1) != 0)
2421 off &= ~1;
2422 else
2423 {
6725bdbf
AM		 2424 bfd_put_32 (output_bfd, relocation,
2425 htab->sgot->contents + off);
252b5132
RH		 2426
2427 if (info->shared)
2428 {
947216bf
AM		 2429 asection *s;
2430 Elf_Internal_Rela outrel;
2431 bfd_byte *loc;
252b5132 2432
947216bf
AM		 2433 s = htab->srelgot;
2434 if (s == NULL)
ffb2e45b 2435 abort ();
252b5132 2436
6725bdbf
AM		 2437 outrel.r_offset = (htab->sgot->output_section->vma
2438 + htab->sgot->output_offset
252b5132
RH		 2439 + off);
2440 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
947216bf
AM		 2441 loc = s->contents;
2442 loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 2443 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 2444 }
2445
2446 local_got_offsets[r_symndx] |= 1;
2447 }
252b5132
RH		 2448 }
2449
ffb2e45b
AM		 2450 if (off >= (bfd_vma) -2)
2451 abort ();
2452
8c37241b
JJ		 2453 relocation = htab->sgot->output_section->vma
2454 + htab->sgot->output_offset + off
2455 - htab->sgotplt->output_section->vma
2456 - htab->sgotplt->output_offset;
252b5132
RH		 2457 break;
2458
2459 case R_386_GOTOFF:
2460 /* Relocation is relative to the start of the global offset
2461 table. */
2462
90f487df
L		 2463 /* Check to make sure it isn't a protected function symbol
2464 for shared library since it may not be local when used
2465 as function address. */
2466 if (info->shared
8fe76924 2467 && !info->executable
90f487df
L		 2468 && h
2469 && h->def_regular
2470 && h->type == STT_FUNC
2471 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2472 {
2473 (*_bfd_error_handler)
2474 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
2475 input_bfd, h->root.root.string);
2476 bfd_set_error (bfd_error_bad_value);
2477 return FALSE;
2478 }
2479
8c37241b
JJ		 2480 /* Note that sgot is not involved in this
2481 calculation. We always want the start of .got.plt. If we
2482 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 2483 permitted by the ABI, we might have to change this
2484 calculation. */
8c37241b
JJ		 2485 relocation -= htab->sgotplt->output_section->vma
2486 + htab->sgotplt->output_offset;
252b5132
RH		 2487 break;
2488
2489 case R_386_GOTPC:
2490 /* Use global offset table as symbol value. */
8c37241b
JJ		 2491 relocation = htab->sgotplt->output_section->vma
2492 + htab->sgotplt->output_offset;
b34976b6 2493 unresolved_reloc = FALSE;
252b5132
RH		 2494 break;
2495
2496 case R_386_PLT32:
2497 /* Relocation is to the entry for this symbol in the
2498 procedure linkage table. */
2499
dd5724d5 2500 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 2501 without using the procedure linkage table. */
252b5132
RH		 2502 if (h == NULL)
2503 break;
2504
dd5724d5 2505 if (h->plt.offset == (bfd_vma) -1
6725bdbf 2506 || htab->splt == NULL)
252b5132
RH		 2507 {
2508 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 2509 happens when statically linking PIC code, or when
2510 using -Bsymbolic. */
252b5132
RH		 2511 break;
2512 }
2513
6725bdbf
AM		 2514 relocation = (htab->splt->output_section->vma
2515 + htab->splt->output_offset
252b5132 2516 + h->plt.offset);
b34976b6 2517 unresolved_reloc = FALSE;
252b5132
RH		 2518 break;
2519
2520 case R_386_32:
2521 case R_386_PC32:
f855931b 2522 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2523 break;
2524
12d0ee4a 2525 if ((info->shared
ef5aade5
L		 2526 && (h == NULL
2527 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2528 || h->root.type != bfd_link_hash_undefweak)
12d0ee4a 2529 && (r_type != R_386_PC32
f6c52c13 2530 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 2531 || (ELIMINATE_COPY_RELOCS
2532 && !info->shared
12d0ee4a
AM		 2533 && h != NULL
2534 && h->dynindx != -1
f5385ebf
AM		 2535 && !h->non_got_ref
2536 && ((h->def_dynamic
2537 && !h->def_regular)
28d0b90e
AM		 2538 || h->root.type == bfd_link_hash_undefweak
2539 || h->root.type == bfd_link_hash_undefined)))
252b5132 2540 {
947216bf
AM		 2541 Elf_Internal_Rela outrel;
2542 bfd_byte *loc;
b34976b6 2543 bfd_boolean skip, relocate;
0c715baa 2544 asection *sreloc;
252b5132
RH		 2545
2546 /* When generating a shared object, these relocations
2547 are copied into the output file to be resolved at run
2548 time. */
2549
b34976b6
AM		 2550 skip = FALSE;
2551 relocate = FALSE;
252b5132 2552
c629eae0
JJ		 2553 outrel.r_offset =
2554 _bfd_elf_section_offset (output_bfd, info, input_section,
2555 rel->r_offset);
2556 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2557 skip = TRUE;
0bb2d96a 2558 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2559 skip = TRUE, relocate = TRUE;
252b5132
RH		 2560 outrel.r_offset += (input_section->output_section->vma
2561 + input_section->output_offset);
2562
2563 if (skip)
0bb2d96a 2564 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 2565 else if (h != NULL
2566 && h->dynindx != -1
2567 && (r_type == R_386_PC32
2568 || !info->shared
55255dae 2569 || !SYMBOLIC_BIND (info, h)
f5385ebf 2570 || !h->def_regular))
0bb2d96a 2571 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 2572 else
2573 {
5a15f56f 2574 /* This symbol is local, or marked to become local. */
b34976b6 2575 relocate = TRUE;
5a15f56f 2576 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 2577 }
2578
0c715baa
AM		 2579 sreloc = elf_section_data (input_section)->sreloc;
2580 if (sreloc == NULL)
2581 abort ();
2582
947216bf
AM		 2583 loc = sreloc->contents;
2584 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
0c715baa 2585 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 2586
2587 /* If this reloc is against an external symbol, we do
2588 not want to fiddle with the addend. Otherwise, we
2589 need to include the symbol value so that it becomes
2590 an addend for the dynamic reloc. */
2591 if (! relocate)
2592 continue;
2593 }
252b5132
RH		 2594 break;
2595
37e55690
JJ		 2596 case R_386_TLS_IE:
2597 if (info->shared)
2598 {
947216bf
AM		 2599 Elf_Internal_Rela outrel;
2600 bfd_byte *loc;
37e55690 2601 asection *sreloc;
37e55690
JJ		 2602
2603 outrel.r_offset = rel->r_offset
2604 + input_section->output_section->vma
2605 + input_section->output_offset;
2606 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2607 sreloc = elf_section_data (input_section)->sreloc;
2608 if (sreloc == NULL)
2609 abort ();
947216bf
AM		 2610 loc = sreloc->contents;
2611 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 2612 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2613 }
2614 /* Fall through */
2615
13ae64f3 2616 case R_386_TLS_GD:
67a4f2b7
AO		 2617 case R_386_TLS_GOTDESC:
2618 case R_386_TLS_DESC_CALL:
13ae64f3 2619 case R_386_TLS_IE_32:
37e55690 2620 case R_386_TLS_GOTIE:
13ae64f3
JJ		 2621 r_type = elf_i386_tls_transition (info, r_type, h == NULL);
2622 tls_type = GOT_UNKNOWN;
2623 if (h == NULL && local_got_offsets)
2624 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
2625 else if (h != NULL)
2626 {
2627 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690 2628 if (!info->shared && h->dynindx == -1 && (tls_type & GOT_TLS_IE))
13ae64f3
JJ		 2629 r_type = R_386_TLS_LE_32;
2630 }
37e55690
JJ		 2631 if (tls_type == GOT_TLS_IE)
2632 tls_type = GOT_TLS_IE_NEG;
67a4f2b7
AO		 2633 if (r_type == R_386_TLS_GD
2634 || r_type == R_386_TLS_GOTDESC
2635 || r_type == R_386_TLS_DESC_CALL)
37e55690
JJ		 2636 {
2637 if (tls_type == GOT_TLS_IE_POS)
2638 r_type = R_386_TLS_GOTIE;
2639 else if (tls_type & GOT_TLS_IE)
2640 r_type = R_386_TLS_IE_32;
2641 }
13ae64f3
JJ		 2642
2643 if (r_type == R_386_TLS_LE_32)
2644 {
82e51918 2645 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 2646 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
2647 {
2648 unsigned int val, type;
2649 bfd_vma roff;
2650
2651 /* GD->LE transition. */
2652 BFD_ASSERT (rel->r_offset >= 2);
2653 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2654 BFD_ASSERT (type == 0x8d || type == 0x04);
eea6121a 2655 BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
13ae64f3
JJ		 2656 BFD_ASSERT (bfd_get_8 (input_bfd,
2657 contents + rel->r_offset + 4)
2658 == 0xe8);
2659 BFD_ASSERT (rel + 1 < relend);
2660 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
2661 roff = rel->r_offset + 5;
2662 val = bfd_get_8 (input_bfd,
2663 contents + rel->r_offset - 1);
2664 if (type == 0x04)
2665 {
2666 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
2667 Change it into:
2668 movl %gs:0, %eax; subl $foo@tpoff, %eax
2669 (6 byte form of subl). */
2670 BFD_ASSERT (rel->r_offset >= 3);
2671 BFD_ASSERT (bfd_get_8 (input_bfd,
2672 contents + rel->r_offset - 3)
2673 == 0x8d);
2674 BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
2675 memcpy (contents + rel->r_offset - 3,
2676 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
2677 }
2678 else
2679 {
2680 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
eea6121a 2681 if (rel->r_offset + 10 <= input_section->size
13ae64f3
JJ		 2682 && bfd_get_8 (input_bfd,
2683 contents + rel->r_offset + 9) == 0x90)
2684 {
2685 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
2686 Change it into:
2687 movl %gs:0, %eax; subl $foo@tpoff, %eax
2688 (6 byte form of subl). */
2689 memcpy (contents + rel->r_offset - 2,
2690 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
2691 roff = rel->r_offset + 6;
2692 }
2693 else
2694 {
2695 /* leal foo(%reg), %eax; call ___tls_get_addr
2696 Change it into:
2697 movl %gs:0, %eax; subl $foo@tpoff, %eax
2698 (5 byte form of subl). */
2699 memcpy (contents + rel->r_offset - 2,
2700 "\x65\xa1\0\0\0\0\x2d\0\0\0", 11);
2701 }
2702 }
2703 bfd_put_32 (output_bfd, tpoff (info, relocation),
2704 contents + roff);
2705 /* Skip R_386_PLT32. */
2706 rel++;
2707 continue;
2708 }
67a4f2b7
AO		 2709 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
2710 {
2711 /* GDesc -> LE transition.
2712 It's originally something like:
2713 leal x@tlsdesc(%ebx), %eax
2714
2715 leal x@ntpoff, %eax
2716
2717 Registers other than %eax may be set up here. */
2718
2719 unsigned int val, type;
2720 bfd_vma roff;
2721
2722 /* First, make sure it's a leal adding ebx to a
2723 32-bit offset into any register, although it's
2724 probably almost always going to be eax. */
2725 roff = rel->r_offset;
2726 BFD_ASSERT (roff >= 2);
2727 type = bfd_get_8 (input_bfd, contents + roff - 2);
2728 BFD_ASSERT (type == 0x8d);
2729 val = bfd_get_8 (input_bfd, contents + roff - 1);
2730 BFD_ASSERT ((val & 0xc7) == 0x83);
2731 BFD_ASSERT (roff + 4 <= input_section->size);
2732
2733 /* Now modify the instruction as appropriate. */
2734 /* aoliva FIXME: remove the above and xor the byte
2735 below with 0x86. */
2736 bfd_put_8 (output_bfd, val ^ 0x86,
2737 contents + roff - 1);
2738 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2739 contents + roff);
2740 continue;
2741 }
2742 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
2743 {
2744 /* GDesc -> LE transition.
2745 It's originally:
2746 call *(%eax)
2747 Turn it into:
2748 nop; nop */
2749
2750 unsigned int val, type;
2751 bfd_vma roff;
2752
2753 /* First, make sure it's a call *(%eax). */
2754 roff = rel->r_offset;
2755 BFD_ASSERT (roff + 2 <= input_section->size);
2756 type = bfd_get_8 (input_bfd, contents + roff);
2757 BFD_ASSERT (type == 0xff);
2758 val = bfd_get_8 (input_bfd, contents + roff + 1);
2759 BFD_ASSERT (val == 0x10);
2760
10efb593
L		 2761 /* Now modify the instruction as appropriate. Use
2762 xchg %ax,%ax instead of 2 nops. */
2763 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 2764 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
2765 continue;
2766 }
37e55690 2767 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3
JJ		 2768 {
2769 unsigned int val, type;
2770
2771 /* IE->LE transition:
37e55690
JJ		 2772 Originally it can be one of:
2773 movl foo, %eax
2774 movl foo, %reg
2775 addl foo, %reg
2776 We change it into:
2777 movl $foo, %eax
2778 movl $foo, %reg
2779 addl $foo, %reg. */
2780 BFD_ASSERT (rel->r_offset >= 1);
2781 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
eea6121a 2782 BFD_ASSERT (rel->r_offset + 4 <= input_section->size);
37e55690
JJ		 2783 if (val == 0xa1)
2784 {
2785 /* movl foo, %eax. */
55fd94b0
AM		 2786 bfd_put_8 (output_bfd, 0xb8,
2787 contents + rel->r_offset - 1);
37e55690 2788 }
299bf759 2789 else
37e55690 2790 {
299bf759 2791 BFD_ASSERT (rel->r_offset >= 2);
55fd94b0
AM		 2792 type = bfd_get_8 (input_bfd,
2793 contents + rel->r_offset - 2);
299bf759 2794 switch (type)
26e41594 2795 {
299bf759
L		 2796 case 0x8b:
2797 /* movl */
2798 BFD_ASSERT ((val & 0xc7) == 0x05);
2799 bfd_put_8 (output_bfd, 0xc7,
2800 contents + rel->r_offset - 2);
2801 bfd_put_8 (output_bfd,
2802 0xc0 | ((val >> 3) & 7),
2803 contents + rel->r_offset - 1);
2804 break;
2805 case 0x03:
2806 /* addl */
2807 BFD_ASSERT ((val & 0xc7) == 0x05);
2808 bfd_put_8 (output_bfd, 0x81,
2809 contents + rel->r_offset - 2);
2810 bfd_put_8 (output_bfd,
2811 0xc0 | ((val >> 3) & 7),
2812 contents + rel->r_offset - 1);
2813 break;
2814 default:
2815 BFD_FAIL ();
2816 break;
26e41594 2817 }
37e55690 2818 }
37e55690
JJ		 2819 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2820 contents + rel->r_offset);
2821 continue;
2822 }
2823 else
2824 {
2825 unsigned int val, type;
2826
2827 /* {IE_32,GOTIE}->LE transition:
2828 Originally it can be one of:
13ae64f3 2829 subl foo(%reg1), %reg2
13ae64f3 2830 movl foo(%reg1), %reg2
37e55690 2831 addl foo(%reg1), %reg2
13ae64f3
JJ		 2832 We change it into:
2833 subl $foo, %reg2
37e55690
JJ		 2834 movl $foo, %reg2 (6 byte form)
2835 addl $foo, %reg2. */
13ae64f3
JJ		 2836 BFD_ASSERT (rel->r_offset >= 2);
2837 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2838 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
eea6121a 2839 BFD_ASSERT (rel->r_offset + 4 <= input_section->size);
37e55690 2840 BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4);
13ae64f3
JJ		 2841 if (type == 0x8b)
2842 {
2843 /* movl */
13ae64f3
JJ		 2844 bfd_put_8 (output_bfd, 0xc7,
2845 contents + rel->r_offset - 2);
2846 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2847 contents + rel->r_offset - 1);
2848 }
2849 else if (type == 0x2b)
2850 {
2851 /* subl */
13ae64f3
JJ		 2852 bfd_put_8 (output_bfd, 0x81,
2853 contents + rel->r_offset - 2);
2854 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
2855 contents + rel->r_offset - 1);
2856 }
37e55690
JJ		 2857 else if (type == 0x03)
2858 {
2859 /* addl */
2860 bfd_put_8 (output_bfd, 0x81,
2861 contents + rel->r_offset - 2);
2862 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2863 contents + rel->r_offset - 1);
2864 }
13ae64f3
JJ		 2865 else
2866 BFD_FAIL ();
37e55690
JJ		 2867 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
2868 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2869 contents + rel->r_offset);
2870 else
2871 bfd_put_32 (output_bfd, tpoff (info, relocation),
2872 contents + rel->r_offset);
13ae64f3
JJ		 2873 continue;
2874 }
2875 }
2876
2877 if (htab->sgot == NULL)
2878 abort ();
2879
2880 if (h != NULL)
67a4f2b7
AO		 2881 {
2882 off = h->got.offset;
2883 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
2884 }
13ae64f3
JJ		 2885 else
2886 {
2887 if (local_got_offsets == NULL)
2888 abort ();
2889
2890 off = local_got_offsets[r_symndx];
67a4f2b7 2891 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 2892 }
2893
2894 if ((off & 1) != 0)
2895 off &= ~1;
26e41594 2896 else
13ae64f3 2897 {
947216bf
AM		 2898 Elf_Internal_Rela outrel;
2899 bfd_byte *loc;
13ae64f3 2900 int dr_type, indx;
67a4f2b7 2901 asection *sreloc;
13ae64f3
JJ		 2902
2903 if (htab->srelgot == NULL)
2904 abort ();
2905
67a4f2b7
AO		 2906 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2907
2908 if (GOT_TLS_GDESC_P (tls_type))
2909 {
2910 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
2911 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
2912 <= htab->sgotplt->size);
2913 outrel.r_offset = (htab->sgotplt->output_section->vma
2914 + htab->sgotplt->output_offset
2915 + offplt
2916 + htab->sgotplt_jump_table_size);
2917 sreloc = htab->srelplt;
2918 loc = sreloc->contents;
5ae0bfb6
RS		 2919 loc += (htab->next_tls_desc_index++
2920 * sizeof (Elf32_External_Rel));
67a4f2b7
AO		 2921 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
2922 <= sreloc->contents + sreloc->size);
2923 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2924 if (indx == 0)
2925 {
2926 BFD_ASSERT (! unresolved_reloc);
2927 bfd_put_32 (output_bfd,
2928 relocation - dtpoff_base (info),
2929 htab->sgotplt->contents + offplt
2930 + htab->sgotplt_jump_table_size + 4);
2931 }
2932 else
2933 {
2934 bfd_put_32 (output_bfd, 0,
2935 htab->sgotplt->contents + offplt
2936 + htab->sgotplt_jump_table_size + 4);
2937 }
2938 }
2939
2940 sreloc = htab->srelgot;
2941
13ae64f3
JJ		 2942 outrel.r_offset = (htab->sgot->output_section->vma
2943 + htab->sgot->output_offset + off);
2944
67a4f2b7 2945 if (GOT_TLS_GD_P (tls_type))
13ae64f3 2946 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 2947 else if (GOT_TLS_GDESC_P (tls_type))
2948 goto dr_done;
37e55690
JJ		 2949 else if (tls_type == GOT_TLS_IE_POS)
2950 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 2951 else
2952 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 2953
37e55690
JJ		 2954 if (dr_type == R_386_TLS_TPOFF && indx == 0)
2955 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
2956 htab->sgot->contents + off);
2957 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
c5c1f40c 2958 bfd_put_32 (output_bfd, dtpoff_base (info) - relocation,
c366c25e 2959 htab->sgot->contents + off);
67a4f2b7 2960 else if (dr_type != R_386_TLS_DESC)
c366c25e
JJ		 2961 bfd_put_32 (output_bfd, 0,
2962 htab->sgot->contents + off);
13ae64f3 2963 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7
AO		 2964
2965 loc = sreloc->contents;
2966 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
2967 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
2968 <= sreloc->contents + sreloc->size);
13ae64f3
JJ		 2969 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2970
67a4f2b7 2971 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 2972 {
2973 if (indx == 0)
2974 {
82e51918 2975 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 2976 bfd_put_32 (output_bfd,
2977 relocation - dtpoff_base (info),
2978 htab->sgot->contents + off + 4);
2979 }
2980 else
2981 {
2982 bfd_put_32 (output_bfd, 0,
2983 htab->sgot->contents + off + 4);
2984 outrel.r_info = ELF32_R_INFO (indx,
2985 R_386_TLS_DTPOFF32);
2986 outrel.r_offset += 4;
67a4f2b7 2987 sreloc->reloc_count++;
947216bf 2988 loc += sizeof (Elf32_External_Rel);
67a4f2b7
AO		 2989 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
2990 <= sreloc->contents + sreloc->size);
947216bf 2991 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
13ae64f3
JJ		 2992 }
2993 }
37e55690
JJ		 2994 else if (tls_type == GOT_TLS_IE_BOTH)
2995 {
2996 bfd_put_32 (output_bfd,
2997 indx == 0 ? relocation - dtpoff_base (info) : 0,
2998 htab->sgot->contents + off + 4);
2999 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3000 outrel.r_offset += 4;
67a4f2b7 3001 sreloc->reloc_count++;
947216bf 3002 loc += sizeof (Elf32_External_Rel);
37e55690
JJ		 3003 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3004 }
13ae64f3 3005
67a4f2b7 3006 dr_done:
13ae64f3
JJ		 3007 if (h != NULL)
3008 h->got.offset |= 1;
3009 else
3010 local_got_offsets[r_symndx] |= 1;
3011 }
3012
67a4f2b7
AO		 3013 if (off >= (bfd_vma) -2
3014 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 3015 abort ();
67a4f2b7
AO		 3016 if (r_type == R_386_TLS_GOTDESC
3017 || r_type == R_386_TLS_DESC_CALL)
3018 {
3019 relocation = htab->sgotplt_jump_table_size + offplt;
3020 unresolved_reloc = FALSE;
3021 }
3022 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 3023 {
8c37241b
JJ		 3024 bfd_vma g_o_t = htab->sgotplt->output_section->vma
3025 + htab->sgotplt->output_offset;
3026 relocation = htab->sgot->output_section->vma
67a4f2b7 3027 + htab->sgot->output_offset + off - g_o_t;
37e55690
JJ		 3028 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
3029 && tls_type == GOT_TLS_IE_BOTH)
3030 relocation += 4;
3031 if (r_type == R_386_TLS_IE)
8c37241b 3032 relocation += g_o_t;
b34976b6 3033 unresolved_reloc = FALSE;
13ae64f3 3034 }
67a4f2b7 3035 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 3036 {
3037 unsigned int val, type;
3038 bfd_vma roff;
3039
3040 /* GD->IE transition. */
3041 BFD_ASSERT (rel->r_offset >= 2);
3042 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3043 BFD_ASSERT (type == 0x8d || type == 0x04);
eea6121a 3044 BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
13ae64f3
JJ		 3045 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
3046 == 0xe8);
3047 BFD_ASSERT (rel + 1 < relend);
3048 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
3049 roff = rel->r_offset - 3;
3050 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3051 if (type == 0x04)
3052 {
3053 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3054 Change it into:
3055 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
3056 BFD_ASSERT (rel->r_offset >= 3);
3057 BFD_ASSERT (bfd_get_8 (input_bfd,
3058 contents + rel->r_offset - 3)
3059 == 0x8d);
3060 BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
3061 val >>= 3;
3062 }
3063 else
3064 {
3065 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3066 Change it into:
3067 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
eea6121a 3068 BFD_ASSERT (rel->r_offset + 10 <= input_section->size);
13ae64f3
JJ		 3069 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
3070 BFD_ASSERT (bfd_get_8 (input_bfd,
3071 contents + rel->r_offset + 9)
3072 == 0x90);
3073 roff = rel->r_offset - 2;
3074 }
3075 memcpy (contents + roff,
3076 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
3077 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 3078 /* If foo is used only with foo@gotntpoff(%reg) and
3079 foo@indntpoff, but not with foo@gottpoff(%reg), change
3080 subl $foo@gottpoff(%reg), %eax
3081 into:
3082 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 3083 if (tls_type == GOT_TLS_IE_POS)
3084 contents[roff + 6] = 0x03;
8c37241b
JJ		 3085 bfd_put_32 (output_bfd,
3086 htab->sgot->output_section->vma
3087 + htab->sgot->output_offset + off
3088 - htab->sgotplt->output_section->vma
3089 - htab->sgotplt->output_offset,
13ae64f3
JJ		 3090 contents + roff + 8);
3091 /* Skip R_386_PLT32. */
3092 rel++;
3093 continue;
3094 }
67a4f2b7
AO		 3095 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3096 {
3097 /* GDesc -> IE transition.
3098 It's originally something like:
3099 leal x@tlsdesc(%ebx), %eax
3100
3101 Change it to:
3102 movl x@gotntpoff(%ebx), %eax # before nop; nop
3103 or:
3104 movl x@gottpoff(%ebx), %eax # before negl %eax
3105
3106 Registers other than %eax may be set up here. */
3107
3108 unsigned int val, type;
3109 bfd_vma roff;
3110
3111 /* First, make sure it's a leal adding ebx to a 32-bit
3112 offset into any register, although it's probably
3113 almost always going to be eax. */
3114 roff = rel->r_offset;
3115 BFD_ASSERT (roff >= 2);
3116 type = bfd_get_8 (input_bfd, contents + roff - 2);
3117 BFD_ASSERT (type == 0x8d);
3118 val = bfd_get_8 (input_bfd, contents + roff - 1);
3119 BFD_ASSERT ((val & 0xc7) == 0x83);
3120 BFD_ASSERT (roff + 4 <= input_section->size);
3121
3122 /* Now modify the instruction as appropriate. */
3123 /* To turn a leal into a movl in the form we use it, it
3124 suffices to change the first byte from 0x8d to 0x8b.
3125 aoliva FIXME: should we decide to keep the leal, all
3126 we have to do is remove the statement below, and
3127 adjust the relaxation of R_386_TLS_DESC_CALL. */
3128 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3129
3130 if (tls_type == GOT_TLS_IE_BOTH)
3131 off += 4;
3132
3133 bfd_put_32 (output_bfd,
3134 htab->sgot->output_section->vma
3135 + htab->sgot->output_offset + off
3136 - htab->sgotplt->output_section->vma
3137 - htab->sgotplt->output_offset,
3138 contents + roff);
3139 continue;
3140 }
3141 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3142 {
3143 /* GDesc -> IE transition.
3144 It's originally:
3145 call *(%eax)
3146
3147 Change it to:
3148 nop; nop
3149 or
3150 negl %eax
3151 depending on how we transformed the TLS_GOTDESC above.
3152 */
3153
3154 unsigned int val, type;
3155 bfd_vma roff;
3156
3157 /* First, make sure it's a call *(%eax). */
3158 roff = rel->r_offset;
3159 BFD_ASSERT (roff + 2 <= input_section->size);
3160 type = bfd_get_8 (input_bfd, contents + roff);
3161 BFD_ASSERT (type == 0xff);
3162 val = bfd_get_8 (input_bfd, contents + roff + 1);
3163 BFD_ASSERT (val == 0x10);
3164
3165 /* Now modify the instruction as appropriate. */
3166 if (tls_type != GOT_TLS_IE_NEG)
3167 {
10efb593
L		 3168 /* xchg %ax,%ax */
3169 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3170 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3171 }
3172 else
3173 {
3174 /* negl %eax */
3175 bfd_put_8 (output_bfd, 0xf7, contents + roff);
3176 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
3177 }
3178
3179 continue;
3180 }
3181 else
3182 BFD_ASSERT (FALSE);
13ae64f3
JJ		 3183 break;
3184
3185 case R_386_TLS_LDM:
3186 if (! info->shared)
3187 {
3188 unsigned int val;
3189
3190 /* LD->LE transition:
3191 Ensure it is:
3192 leal foo(%reg), %eax; call ___tls_get_addr.
3193 We change it into:
3194 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
3195 BFD_ASSERT (rel->r_offset >= 2);
3196 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2)
3197 == 0x8d);
3198 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3199 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
eea6121a 3200 BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
13ae64f3
JJ		 3201 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
3202 == 0xe8);
3203 BFD_ASSERT (rel + 1 < relend);
3204 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
3205 memcpy (contents + rel->r_offset - 2,
3206 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
3207 /* Skip R_386_PLT32. */
3208 rel++;
3209 continue;
3210 }
3211
3212 if (htab->sgot == NULL)
3213 abort ();
3214
3215 off = htab->tls_ldm_got.offset;
3216 if (off & 1)
3217 off &= ~1;
3218 else
3219 {
947216bf
AM		 3220 Elf_Internal_Rela outrel;
3221 bfd_byte *loc;
13ae64f3
JJ		 3222
3223 if (htab->srelgot == NULL)
3224 abort ();
3225
3226 outrel.r_offset = (htab->sgot->output_section->vma
3227 + htab->sgot->output_offset + off);
3228
3229 bfd_put_32 (output_bfd, 0,
3230 htab->sgot->contents + off);
3231 bfd_put_32 (output_bfd, 0,
3232 htab->sgot->contents + off + 4);
3233 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
947216bf
AM		 3234 loc = htab->srelgot->contents;
3235 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
13ae64f3
JJ		 3236 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3237 htab->tls_ldm_got.offset |= 1;
3238 }
8c37241b
JJ		 3239 relocation = htab->sgot->output_section->vma
3240 + htab->sgot->output_offset + off
3241 - htab->sgotplt->output_section->vma
3242 - htab->sgotplt->output_offset;
b34976b6 3243 unresolved_reloc = FALSE;
13ae64f3
JJ		 3244 break;
3245
3246 case R_386_TLS_LDO_32:
a45bb67d 3247 if (info->shared || (input_section->flags & SEC_CODE) == 0)
13ae64f3
JJ		 3248 relocation -= dtpoff_base (info);
3249 else
3250 /* When converting LDO to LE, we must negate. */
3251 relocation = -tpoff (info, relocation);
3252 break;
3253
3254 case R_386_TLS_LE_32:
13ae64f3 3255 case R_386_TLS_LE:
37e55690
JJ		 3256 if (info->shared)
3257 {
947216bf 3258 Elf_Internal_Rela outrel;
37e55690 3259 asection *sreloc;
947216bf 3260 bfd_byte *loc;
37e55690
JJ		 3261 int indx;
3262
3263 outrel.r_offset = rel->r_offset
3264 + input_section->output_section->vma
3265 + input_section->output_offset;
3266 if (h != NULL && h->dynindx != -1)
3267 indx = h->dynindx;
3268 else
3269 indx = 0;
3270 if (r_type == R_386_TLS_LE_32)
3271 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
3272 else
3273 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3274 sreloc = elf_section_data (input_section)->sreloc;
3275 if (sreloc == NULL)
3276 abort ();
947216bf
AM		 3277 loc = sreloc->contents;
3278 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 3279 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3280 if (indx)
3281 continue;
3282 else if (r_type == R_386_TLS_LE_32)
3283 relocation = dtpoff_base (info) - relocation;
3284 else
3285 relocation -= dtpoff_base (info);
3286 }
3287 else if (r_type == R_386_TLS_LE_32)
3288 relocation = tpoff (info, relocation);
3289 else
3290 relocation = -tpoff (info, relocation);
13ae64f3
JJ		 3291 break;
3292
252b5132
RH		 3293 default:
3294 break;
3295 }
3296
239e1f3a
AM		 3297 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3298 because such sections are not SEC_ALLOC and thus ld.so will
3299 not process them. */
8c694914 3300 if (unresolved_reloc
239e1f3a 3301 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 3302 && h->def_dynamic))
6a30718d
JJ		 3303 {
3304 (*_bfd_error_handler)
843fe662 3305 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3306 input_bfd,
3307 input_section,
6a30718d 3308 (long) rel->r_offset,
843fe662 3309 howto->name,
6a30718d 3310 h->root.root.string);
b34976b6 3311 return FALSE;
6a30718d 3312 }
83be169b 3313
252b5132
RH		 3314 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3315 contents, rel->r_offset,
55fd94b0 3316 relocation, 0);
252b5132 3317
cf5c0c5b 3318 if (r != bfd_reloc_ok)
252b5132 3319 {
cf5c0c5b 3320 const char *name;
ffb2e45b 3321
cf5c0c5b
AM		 3322 if (h != NULL)
3323 name = h->root.root.string;
3324 else
3325 {
3326 name = bfd_elf_string_from_elf_section (input_bfd,
3327 symtab_hdr->sh_link,
3328 sym->st_name);
3329 if (name == NULL)
b34976b6 3330 return FALSE;
cf5c0c5b
AM		 3331 if (*name == '\0')
3332 name = bfd_section_name (input_bfd, sec);
3333 }
ffb2e45b 3334
cf5c0c5b
AM		 3335 if (r == bfd_reloc_overflow)
3336 {
cf5c0c5b 3337 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3338 (info, (h ? &h->root : NULL), name, howto->name,
3339 (bfd_vma) 0, input_bfd, input_section,
3340 rel->r_offset)))
b34976b6 3341 return FALSE;
cf5c0c5b
AM		 3342 }
3343 else
3344 {
3345 (*_bfd_error_handler)
d003868e
AM		 3346 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3347 input_bfd, input_section,
cf5c0c5b 3348 (long) rel->r_offset, name, (int) r);
b34976b6 3349 return FALSE;
cf5c0c5b 3350 }
252b5132
RH		 3351 }
3352 }
3353
b34976b6 3354 return TRUE;
252b5132
RH		 3355}
3356
3357/* Finish up dynamic symbol handling. We set the contents of various
3358 dynamic sections here. */
3359
b34976b6 3360static bfd_boolean
55fd94b0
AM		 3361elf_i386_finish_dynamic_symbol (bfd *output_bfd,
3362 struct bfd_link_info *info,
3363 struct elf_link_hash_entry *h,
3364 Elf_Internal_Sym *sym)
252b5132 3365{
6725bdbf 3366 struct elf_i386_link_hash_table *htab;
252b5132 3367
6725bdbf 3368 htab = elf_i386_hash_table (info);
252b5132
RH		 3369
3370 if (h->plt.offset != (bfd_vma) -1)
3371 {
252b5132
RH		 3372 bfd_vma plt_index;
3373 bfd_vma got_offset;
947216bf
AM		 3374 Elf_Internal_Rela rel;
3375 bfd_byte *loc;
252b5132
RH		 3376
3377 /* This symbol has an entry in the procedure linkage table. Set
3378 it up. */
3379
ffb2e45b
AM		 3380 if (h->dynindx == -1
3381 || htab->splt == NULL
3382 || htab->sgotplt == NULL
3383 || htab->srelplt == NULL)
3384 abort ();
252b5132
RH		 3385
3386 /* Get the index in the procedure linkage table which
3387 corresponds to this symbol. This is the index of this symbol
3388 in all the symbols for which we are making plt entries. The
3389 first entry in the procedure linkage table is reserved. */
3390 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3391
3392 /* Get the offset into the .got table of the entry that
3393 corresponds to this function. Each .got entry is 4 bytes.
3394 The first three are reserved. */
3395 got_offset = (plt_index + 3) * 4;
3396
3397 /* Fill in the entry in the procedure linkage table. */
3398 if (! info->shared)
3399 {
6725bdbf 3400 memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry,
252b5132
RH		 3401 PLT_ENTRY_SIZE);
3402 bfd_put_32 (output_bfd,
6725bdbf
AM		 3403 (htab->sgotplt->output_section->vma
3404 + htab->sgotplt->output_offset
252b5132 3405 + got_offset),
6725bdbf 3406 htab->splt->contents + h->plt.offset + 2);
eac338cf
PB		 3407
3408 if (htab->is_vxworks)
3409 {
3410 int s, k, reloc_index;
3411
3412 /* Create the R_386_32 relocation referencing the GOT
3413 for this PLT entry. */
3414
3415 /* S: Current slot number (zero-based). */
3416 s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3417 /* K: Number of relocations for PLTResolve. */
3418 if (info->shared)
3419 k = PLTRESOLVE_RELOCS_SHLIB;
3420 else
3421 k = PLTRESOLVE_RELOCS;
3422 /* Skip the PLTresolve relocations, and the relocations for
3423 the other PLT slots. */
3424 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
3425 loc = (htab->srelplt2->contents + reloc_index
3426 * sizeof (Elf32_External_Rel));
3427
3428 rel.r_offset = (htab->splt->output_section->vma
3429 + htab->splt->output_offset
3430 + h->plt.offset + 2),
7325306f 3431 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3432 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
3433
3434 /* Create the R_386_32 relocation referencing the beginning of
3435 the PLT for this GOT entry. */
3436 rel.r_offset = (htab->sgotplt->output_section->vma
3437 + htab->sgotplt->output_offset
3438 + got_offset);
7325306f 3439 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 3440 bfd_elf32_swap_reloc_out (output_bfd, &rel,
3441 loc + sizeof (Elf32_External_Rel));
3442 }
252b5132
RH		 3443 }
3444 else
3445 {
6725bdbf 3446 memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry,
252b5132
RH		 3447 PLT_ENTRY_SIZE);
3448 bfd_put_32 (output_bfd, got_offset,
6725bdbf 3449 htab->splt->contents + h->plt.offset + 2);
252b5132
RH		 3450 }
3451
3452 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
6725bdbf 3453 htab->splt->contents + h->plt.offset + 7);
252b5132 3454 bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
6725bdbf 3455 htab->splt->contents + h->plt.offset + 12);
252b5132
RH		 3456
3457 /* Fill in the entry in the global offset table. */
3458 bfd_put_32 (output_bfd,
6725bdbf
AM		 3459 (htab->splt->output_section->vma
3460 + htab->splt->output_offset
252b5132
RH		 3461 + h->plt.offset
3462 + 6),
6725bdbf 3463 htab->sgotplt->contents + got_offset);
252b5132
RH		 3464
3465 /* Fill in the entry in the .rel.plt section. */
6725bdbf
AM		 3466 rel.r_offset = (htab->sgotplt->output_section->vma
3467 + htab->sgotplt->output_offset
252b5132
RH		 3468 + got_offset);
3469 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
947216bf 3470 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 3471 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 3472
f5385ebf 3473 if (!h->def_regular)
252b5132
RH		 3474 {
3475 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 3476 the .plt section. Leave the value if there were any
3477 relocations where pointer equality matters (this is a clue
51b64d56
AM		 3478 for the dynamic linker, to make function pointer
3479 comparisons work between an application and shared
c6585bbb
JJ		 3480 library), otherwise set it to zero. If a function is only
3481 called from a binary, there is no need to slow down
3482 shared libraries because of that. */
252b5132 3483 sym->st_shndx = SHN_UNDEF;
f5385ebf 3484 if (!h->pointer_equality_needed)
c6585bbb 3485 sym->st_value = 0;
252b5132
RH		 3486 }
3487 }
3488
13ae64f3 3489 if (h->got.offset != (bfd_vma) -1
67a4f2b7 3490 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 3491 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 3492 {
947216bf
AM		 3493 Elf_Internal_Rela rel;
3494 bfd_byte *loc;
252b5132
RH		 3495
3496 /* This symbol has an entry in the global offset table. Set it
3497 up. */
3498
ffb2e45b
AM		 3499 if (htab->sgot == NULL || htab->srelgot == NULL)
3500 abort ();
252b5132 3501
6725bdbf
AM		 3502 rel.r_offset = (htab->sgot->output_section->vma
3503 + htab->sgot->output_offset
dc810e39 3504 + (h->got.offset & ~(bfd_vma) 1));
252b5132 3505
dd5724d5
AM		 3506 /* If this is a static link, or it is a -Bsymbolic link and the
3507 symbol is defined locally or was forced to be local because
3508 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 3509 The entry in the global offset table will already have been
3510 initialized in the relocate_section function. */
6725bdbf 3511 if (info->shared
586119b3 3512 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 3513 {
6725bdbf 3514 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 3515 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3516 }
252b5132
RH		 3517 else
3518 {
dd5724d5 3519 BFD_ASSERT((h->got.offset & 1) == 0);
6725bdbf
AM		 3520 bfd_put_32 (output_bfd, (bfd_vma) 0,
3521 htab->sgot->contents + h->got.offset);
252b5132
RH		 3522 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
3523 }
3524
947216bf
AM		 3525 loc = htab->srelgot->contents;
3526 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3527 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 3528 }
3529
f5385ebf 3530 if (h->needs_copy)
252b5132 3531 {
947216bf
AM		 3532 Elf_Internal_Rela rel;
3533 bfd_byte *loc;
252b5132
RH		 3534
3535 /* This symbol needs a copy reloc. Set it up. */
3536
ffb2e45b
AM		 3537 if (h->dynindx == -1
3538 || (h->root.type != bfd_link_hash_defined
3539 && h->root.type != bfd_link_hash_defweak)
3540 || htab->srelbss == NULL)
3541 abort ();
252b5132
RH		 3542
3543 rel.r_offset = (h->root.u.def.value
3544 + h->root.u.def.section->output_section->vma
3545 + h->root.u.def.section->output_offset);
3546 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
947216bf
AM		 3547 loc = htab->srelbss->contents;
3548 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3549 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 3550 }
3551
eac338cf
PB		 3552 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.
3553 On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it
3554 is relative to the ".got" section. */
252b5132 3555 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1 3556 || (!htab->is_vxworks && h == htab->elf.hgot))
252b5132
RH		 3557 sym->st_shndx = SHN_ABS;
3558
b34976b6 3559 return TRUE;
252b5132
RH		 3560}
3561
38701953
AM		 3562/* Used to decide how to sort relocs in an optimal manner for the
3563 dynamic linker, before writing them out. */
3564
3565static enum elf_reloc_type_class
55fd94b0 3566elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
38701953 3567{
55fd94b0 3568 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 3569 {
3570 case R_386_RELATIVE:
3571 return reloc_class_relative;
3572 case R_386_JUMP_SLOT:
3573 return reloc_class_plt;
3574 case R_386_COPY:
3575 return reloc_class_copy;
3576 default:
3577 return reloc_class_normal;
3578 }
3579}
3580
252b5132
RH		 3581/* Finish up the dynamic sections. */
3582
b34976b6 3583static bfd_boolean
55fd94b0
AM		 3584elf_i386_finish_dynamic_sections (bfd *output_bfd,
3585 struct bfd_link_info *info)
252b5132 3586{
6725bdbf 3587 struct elf_i386_link_hash_table *htab;
252b5132 3588 bfd *dynobj;
252b5132
RH		 3589 asection *sdyn;
3590
6725bdbf 3591 htab = elf_i386_hash_table (info);
ebe50bae 3592 dynobj = htab->elf.dynobj;
252b5132
RH		 3593 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3594
ebe50bae 3595 if (htab->elf.dynamic_sections_created)
252b5132 3596 {
252b5132
RH		 3597 Elf32_External_Dyn *dyncon, *dynconend;
3598
ffb2e45b
AM		 3599 if (sdyn == NULL || htab->sgot == NULL)
3600 abort ();
252b5132
RH		 3601
3602 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3603 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 3604 for (; dyncon < dynconend; dyncon++)
3605 {
3606 Elf_Internal_Dyn dyn;
51b64d56 3607 asection *s;
252b5132
RH		 3608
3609 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3610
3611 switch (dyn.d_tag)
3612 {
3613 default:
0ac8d2ca 3614 continue;
252b5132
RH		 3615
3616 case DT_PLTGOT:
8c37241b
JJ		 3617 s = htab->sgotplt;
3618 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 3619 break;
3620
252b5132 3621 case DT_JMPREL:
6348e046
AM		 3622 s = htab->srelplt;
3623 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 3624 break;
3625
3626 case DT_PLTRELSZ:
6348e046 3627 s = htab->srelplt;
eea6121a 3628 dyn.d_un.d_val = s->size;
252b5132
RH		 3629 break;
3630
3631 case DT_RELSZ:
3632 /* My reading of the SVR4 ABI indicates that the
3633 procedure linkage table relocs (DT_JMPREL) should be
3634 included in the overall relocs (DT_REL). This is
3635 what Solaris does. However, UnixWare can not handle
3636 that case. Therefore, we override the DT_RELSZ entry
6348e046
AM		 3637 here to make it not include the JMPREL relocs. */
3638 s = htab->srelplt;
3639 if (s == NULL)
3640 continue;
eea6121a 3641 dyn.d_un.d_val -= s->size;
6348e046
AM		 3642 break;
3643
3644 case DT_REL:
3645 /* We may not be using the standard ELF linker script.
3646 If .rel.plt is the first .rel section, we adjust
3647 DT_REL to not include it. */
3648 s = htab->srelplt;
3649 if (s == NULL)
3650 continue;
3651 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
3652 continue;
eea6121a 3653 dyn.d_un.d_ptr += s->size;
252b5132
RH		 3654 break;
3655 }
0ac8d2ca
AM		 3656
3657 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 3658 }
3659
3660 /* Fill in the first entry in the procedure linkage table. */
eea6121a 3661 if (htab->splt && htab->splt->size > 0)
252b5132
RH		 3662 {
3663 if (info->shared)
eac338cf
PB		 3664 {
3665 memcpy (htab->splt->contents, elf_i386_pic_plt0_entry,
3666 sizeof (elf_i386_pic_plt0_entry));
3667 memset (htab->splt->contents + sizeof (elf_i386_pic_plt0_entry),
3668 htab->plt0_pad_byte,
3669 PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry));
3670 }
252b5132
RH		 3671 else
3672 {
eac338cf
PB		 3673 memcpy (htab->splt->contents, elf_i386_plt0_entry,
3674 sizeof(elf_i386_plt0_entry));
3675 memset (htab->splt->contents + sizeof (elf_i386_plt0_entry),
3676 htab->plt0_pad_byte,
3677 PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry));
252b5132 3678 bfd_put_32 (output_bfd,
6725bdbf
AM		 3679 (htab->sgotplt->output_section->vma
3680 + htab->sgotplt->output_offset
3681 + 4),
3682 htab->splt->contents + 2);
252b5132 3683 bfd_put_32 (output_bfd,
6725bdbf
AM		 3684 (htab->sgotplt->output_section->vma
3685 + htab->sgotplt->output_offset
3686 + 8),
3687 htab->splt->contents + 8);
eac338cf
PB		 3688
3689 if (htab->is_vxworks)
3690 {
3691 Elf_Internal_Rela rel;
7325306f 3692
eac338cf
PB		 3693 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
3694 On IA32 we use REL relocations so the addend goes in
3695 the PLT directly. */
3696 rel.r_offset = (htab->splt->output_section->vma
3697 + htab->splt->output_offset
3698 + 2);
7325306f 3699 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3700 bfd_elf32_swap_reloc_out (output_bfd, &rel,
3701 htab->srelplt2->contents);
3702 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
3703 rel.r_offset = (htab->splt->output_section->vma
3704 + htab->splt->output_offset
3705 + 8);
7325306f 3706 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3707 bfd_elf32_swap_reloc_out (output_bfd, &rel,
3708 htab->srelplt2->contents +
3709 sizeof (Elf32_External_Rel));
3710 }
252b5132
RH		 3711 }
3712
3713 /* UnixWare sets the entsize of .plt to 4, although that doesn't
3714 really seem like the right value. */
6725bdbf
AM		 3715 elf_section_data (htab->splt->output_section)
3716 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 3717
3718 /* Correct the .rel.plt.unloaded relocations. */
3719 if (htab->is_vxworks && !info->shared)
3720 {
3721 int num_plts = (htab->splt->size / PLT_ENTRY_SIZE) - 1;
4c9b0de6 3722 unsigned char *p;
eac338cf
PB		 3723
3724 p = htab->srelplt2->contents;
3725 if (info->shared)
3726 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
3727 else
3728 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
3729
3730 for (; num_plts; num_plts--)
3731 {
3732 Elf_Internal_Rela rel;
3733 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 3734 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3735 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
3736 p += sizeof (Elf32_External_Rel);
3737
3738 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 3739 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 3740 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
3741 p += sizeof (Elf32_External_Rel);
3742 }
3743 }
252b5132
RH		 3744 }
3745 }
3746
12d0ee4a 3747 if (htab->sgotplt)
252b5132 3748 {
12d0ee4a 3749 /* Fill in the first three entries in the global offset table. */
eea6121a 3750 if (htab->sgotplt->size > 0)
12d0ee4a
AM		 3751 {
3752 bfd_put_32 (output_bfd,
55fd94b0 3753 (sdyn == NULL ? 0
12d0ee4a
AM		 3754 : sdyn->output_section->vma + sdyn->output_offset),
3755 htab->sgotplt->contents);
55fd94b0
AM		 3756 bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 4);
3757 bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 8);
12d0ee4a 3758 }
252b5132 3759
12d0ee4a
AM		 3760 elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4;
3761 }
8c37241b 3762
eea6121a 3763 if (htab->sgot && htab->sgot->size > 0)
8c37241b
JJ		 3764 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
3765
b34976b6 3766 return TRUE;
252b5132
RH		 3767}
3768
4c45e5c9
JJ		 3769/* Return address for Ith PLT stub in section PLT, for relocation REL
3770 or (bfd_vma) -1 if it should not be included. */
3771
3772static bfd_vma
3773elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
3774 const arelent *rel ATTRIBUTE_UNUSED)
3775{
3776 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
3777}
3778
fdc90cb4
JJ		 3779/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
3780
3781static bfd_boolean
3782elf_i386_hash_symbol (struct elf_link_hash_entry *h)
3783{
3784 if (h->plt.offset != (bfd_vma) -1
3785 && !h->def_regular
3786 && !h->pointer_equality_needed)
3787 return FALSE;
3788
3789 return _bfd_elf_hash_symbol (h);
3790}
4c45e5c9 3791
252b5132
RH		 3792#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
3793#define TARGET_LITTLE_NAME "elf32-i386"
3794#define ELF_ARCH bfd_arch_i386
3795#define ELF_MACHINE_CODE EM_386
3796#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 3797
3798#define elf_backend_can_gc_sections 1
51b64d56 3799#define elf_backend_can_refcount 1
252b5132
RH		 3800#define elf_backend_want_got_plt 1
3801#define elf_backend_plt_readonly 1
3802#define elf_backend_want_plt_sym 0
3803#define elf_backend_got_header_size 12
252b5132 3804
8c29f035
AM		 3805/* Support RELA for objdump of prelink objects. */
3806#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 3807#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
3808
13ae64f3 3809#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 3810
dd5724d5
AM		 3811#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
3812#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
3813#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
157090f7 3814#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM		 3815
3816#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
3817#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 3818#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 3819#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 3820#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 3821#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
3822#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
3823#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
3824#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 3825#define elf_backend_grok_prstatus elf_i386_grok_prstatus
3826#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 3827#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 3828#define elf_backend_relocate_section elf_i386_relocate_section
3829#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 3830#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 3831#define elf_backend_omit_section_dynsym \
3832 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 3833#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 3834#define elf_backend_hash_symbol elf_i386_hash_symbol
dd5724d5 3835
252b5132 3836#include "elf32-target.h"
2bc3c89a
AM		 3837
3838/* FreeBSD support. */
3839
3840#undef TARGET_LITTLE_SYM
3841#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
3842#undef TARGET_LITTLE_NAME
3843#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 3844#undef ELF_OSABI
3845#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 3846
3847/* The kernel recognizes executables as valid only if they carry a
3848 "FreeBSD" label in the ELF header. So we put this label on all
3849 executables and (for simplicity) also all other object files. */
3850
2bc3c89a 3851static void
55fd94b0
AM		 3852elf_i386_post_process_headers (bfd *abfd,
3853 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2bc3c89a
AM		 3854{
3855 Elf_Internal_Ehdr *i_ehdrp;
3856
3857 i_ehdrp = elf_elfheader (abfd);
3858
3859 /* Put an ABI label supported by FreeBSD >= 4.1. */
d1036acb 3860 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
2bc3c89a
AM		 3861#ifdef OLD_FREEBSD_ABI_LABEL
3862 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
3863 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 3864#endif
2bc3c89a
AM		 3865}
3866
3867#undef elf_backend_post_process_headers
571fe01f
NC		 3868#define elf_backend_post_process_headers elf_i386_post_process_headers
3869#undef elf32_bed
3870#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a
AM		 3871
3872#include "elf32-target.h"
eac338cf
PB		 3873
3874/* VxWorks support. */
3875
3876#undef TARGET_LITTLE_SYM
3877#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
3878#undef TARGET_LITTLE_NAME
3879#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 3880#undef ELF_OSABI
eac338cf
PB		 3881
3882/* Like elf_i386_link_hash_table_create but with tweaks for VxWorks. */
3883
3884static struct bfd_link_hash_table *
3885elf_i386_vxworks_link_hash_table_create (bfd *abfd)
3886{
3887 struct bfd_link_hash_table *ret;
3888 struct elf_i386_link_hash_table *htab;
3889
3890 ret = elf_i386_link_hash_table_create (abfd);
3891 if (ret)
3892 {
3893 htab = (struct elf_i386_link_hash_table *) ret;
3894 htab->is_vxworks = 1;
3895 htab->plt0_pad_byte = 0x90;
3896 }
3897
3898 return ret;
3899}
3900
3901
eac338cf
PB		 3902#undef elf_backend_post_process_headers
3903#undef bfd_elf32_bfd_link_hash_table_create
3904#define bfd_elf32_bfd_link_hash_table_create \
3905 elf_i386_vxworks_link_hash_table_create
3906#undef elf_backend_add_symbol_hook
3907#define elf_backend_add_symbol_hook \
3908 elf_vxworks_add_symbol_hook
3909#undef elf_backend_link_output_symbol_hook
3910#define elf_backend_link_output_symbol_hook \
9c72ff84 3911 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 3912#undef elf_backend_emit_relocs
3913#define elf_backend_emit_relocs elf_vxworks_emit_relocs
3914#undef elf_backend_final_write_processing
3915#define elf_backend_final_write_processing \
3916 elf_vxworks_final_write_processing
3917
3918/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
3919 define it. */
3920#undef elf_backend_want_plt_sym
3921#define elf_backend_want_plt_sym 1
3922
3923#undef elf32_bed
3924#define elf32_bed elf32_i386_vxworks_bed
3925
3926#include "elf32-target.h"
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