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2007-05-03 Sandra Loosemore <sandra@codesourcery.com>
[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
b2a8e766 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
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
RH		 1421 asection *s;
1422 unsigned int power_of_two;
1423
252b5132
RH		 1424 /* If this is a function, put it in the procedure linkage table. We
1425 will fill in the contents of the procedure linkage table later,
1426 when we know the address of the .got section. */
1427 if (h->type == STT_FUNC
f5385ebf 1428 || h->needs_plt)
252b5132 1429 {
6725bdbf 1430 if (h->plt.refcount <= 0
9c7a29a3
AM		 1431 || SYMBOL_CALLS_LOCAL (info, h)
1432 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1433 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 1434 {
1435 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 1436 file, but the symbol was never referred to by a dynamic
1437 object, or if all references were garbage collected. In
1438 such a case, we don't actually need to build a procedure
1439 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 1440 h->plt.offset = (bfd_vma) -1;
f5385ebf 1441 h->needs_plt = 0;
252b5132
RH		 1442 }
1443
b34976b6 1444 return TRUE;
252b5132 1445 }
6725bdbf
AM		 1446 else
1447 /* It's possible that we incorrectly decided a .plt reloc was
1448 needed for an R_386_PC32 reloc to a non-function sym in
1449 check_relocs. We can't decide accurately between function and
1450 non-function syms in check-relocs; Objects loaded later in
1451 the link may change h->type. So fix it now. */
bbd7ec4a 1452 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 1453
1454 /* If this is a weak symbol, and there is a real definition, the
1455 processor independent code will have arranged for us to see the
1456 real definition first, and we can just use the same value. */
f6e332e6 1457 if (h->u.weakdef != NULL)
252b5132 1458 {
f6e332e6
AM		 1459 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1460 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1461 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1462 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 1463 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1464 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1465 return TRUE;
252b5132
RH		 1466 }
1467
1468 /* This is a reference to a symbol defined by a dynamic object which
1469 is not a function. */
1470
1471 /* If we are creating a shared library, we must presume that the
1472 only references to the symbol are via the global offset table.
1473 For such cases we need not do anything here; the relocations will
1474 be handled correctly by relocate_section. */
1475 if (info->shared)
b34976b6 1476 return TRUE;
252b5132 1477
7843f00e
ILT		 1478 /* If there are no references to this symbol that do not use the
1479 GOT, we don't need to generate a copy reloc. */
f5385ebf 1480 if (!h->non_got_ref)
b34976b6 1481 return TRUE;
7843f00e 1482
8bd621d8
AM		 1483 /* If -z nocopyreloc was given, we won't generate them either. */
1484 if (info->nocopyreloc)
1485 {
f5385ebf 1486 h->non_got_ref = 0;
b34976b6 1487 return TRUE;
8bd621d8
AM		 1488 }
1489
643796e3
DJ		 1490 htab = elf_i386_hash_table (info);
1491
1492 /* If there aren't any dynamic relocs in read-only sections, then
1493 we can keep the dynamic relocs and avoid the copy reloc. This
1494 doesn't work on VxWorks, where we can not have dynamic relocations
1495 (other than copy and jump slot relocations) in an executable. */
1496 if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks)
ebe50bae 1497 {
a23b6845
AM		 1498 struct elf_i386_link_hash_entry * eh;
1499 struct elf_i386_dyn_relocs *p;
ebe50bae 1500
a23b6845
AM		 1501 eh = (struct elf_i386_link_hash_entry *) h;
1502 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1503 {
1504 s = p->sec->output_section;
1505 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1506 break;
1507 }
1508
a23b6845
AM		 1509 if (p == NULL)
1510 {
f5385ebf 1511 h->non_got_ref = 0;
a23b6845
AM		 1512 return TRUE;
1513 }
ebe50bae
AM		 1514 }
1515
909272ee
AM		 1516 if (h->size == 0)
1517 {
1518 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1519 h->root.root.string);
1520 return TRUE;
1521 }
1522
252b5132
RH		 1523 /* We must allocate the symbol in our .dynbss section, which will
1524 become part of the .bss section of the executable. There will be
1525 an entry for this symbol in the .dynsym section. The dynamic
1526 object will contain position independent code, so all references
1527 from the dynamic object to this symbol will go through the global
1528 offset table. The dynamic linker will use the .dynsym entry to
1529 determine the address it must put in the global offset table, so
1530 both the dynamic object and the regular object will refer to the
1531 same memory location for the variable. */
1532
252b5132
RH		 1533 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
1534 copy the initial value out of the dynamic object and into the
0ac8d2ca 1535 runtime process image. */
252b5132
RH		 1536 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1537 {
eea6121a 1538 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 1539 h->needs_copy = 1;
252b5132
RH		 1540 }
1541
1542 /* We need to figure out the alignment required for this symbol. I
1543 have no idea how ELF linkers handle this. */
1544 power_of_two = bfd_log2 (h->size);
1545 if (power_of_two > 3)
1546 power_of_two = 3;
1547
1548 /* Apply the required alignment. */
0ac8d2ca 1549 s = htab->sdynbss;
eea6121a 1550 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
0ac8d2ca 1551 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
252b5132 1552 {
0ac8d2ca 1553 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
b34976b6 1554 return FALSE;
252b5132
RH		 1555 }
1556
1557 /* Define the symbol as being at this point in the section. */
1558 h->root.u.def.section = s;
eea6121a 1559 h->root.u.def.value = s->size;
252b5132
RH		 1560
1561 /* Increment the section size to make room for the symbol. */
eea6121a 1562 s->size += h->size;
252b5132 1563
b34976b6 1564 return TRUE;
252b5132
RH		 1565}
1566
6725bdbf 1567/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 1568 dynamic relocs. */
6725bdbf 1569
b34976b6 1570static bfd_boolean
55fd94b0 1571allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 1572{
1573 struct bfd_link_info *info;
1574 struct elf_i386_link_hash_table *htab;
5a15f56f 1575 struct elf_i386_link_hash_entry *eh;
0c715baa 1576 struct elf_i386_dyn_relocs *p;
6725bdbf 1577
e92d460e 1578 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1579 return TRUE;
6725bdbf 1580
e92d460e
AM		 1581 if (h->root.type == bfd_link_hash_warning)
1582 /* When warning symbols are created, they **replace** the "real"
1583 entry in the hash table, thus we never get to see the real
1584 symbol in a hash traversal. So look at it now. */
1585 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1586
6725bdbf
AM		 1587 info = (struct bfd_link_info *) inf;
1588 htab = elf_i386_hash_table (info);
1589
ebe50bae 1590 if (htab->elf.dynamic_sections_created
9c7a29a3 1591 && h->plt.refcount > 0)
6725bdbf 1592 {
5a15f56f
AM		 1593 /* Make sure this symbol is output as a dynamic symbol.
1594 Undefined weak syms won't yet be marked as dynamic. */
1595 if (h->dynindx == -1
f5385ebf 1596 && !h->forced_local)
5a15f56f 1597 {
c152c796 1598 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1599 return FALSE;
5a15f56f
AM		 1600 }
1601
4e795f50
AM		 1602 if (info->shared
1603 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 1604 {
0ac8d2ca 1605 asection *s = htab->splt;
6725bdbf 1606
ced53ee5
AM		 1607 /* If this is the first .plt entry, make room for the special
1608 first entry. */
eea6121a
AM		 1609 if (s->size == 0)
1610 s->size += PLT_ENTRY_SIZE;
6725bdbf 1611
eea6121a 1612 h->plt.offset = s->size;
6725bdbf 1613
ced53ee5
AM		 1614 /* If this symbol is not defined in a regular file, and we are
1615 not generating a shared library, then set the symbol to this
1616 location in the .plt. This is required to make function
1617 pointers compare as equal between the normal executable and
1618 the shared library. */
1619 if (! info->shared
f5385ebf 1620 && !h->def_regular)
ced53ee5
AM		 1621 {
1622 h->root.u.def.section = s;
1623 h->root.u.def.value = h->plt.offset;
1624 }
6725bdbf 1625
ced53ee5 1626 /* Make room for this entry. */
eea6121a 1627 s->size += PLT_ENTRY_SIZE;
6725bdbf 1628
ced53ee5
AM		 1629 /* We also need to make an entry in the .got.plt section, which
1630 will be placed in the .got section by the linker script. */
eea6121a 1631 htab->sgotplt->size += 4;
6725bdbf 1632
6725bdbf 1633 /* We also need to make an entry in the .rel.plt section. */
eea6121a 1634 htab->srelplt->size += sizeof (Elf32_External_Rel);
5ae0bfb6 1635 htab->next_tls_desc_index++;
eac338cf
PB		 1636
1637 if (htab->is_vxworks && !info->shared)
1638 {
1639 /* VxWorks has a second set of relocations for each PLT entry
1640 in executables. They go in a separate relocation section,
1641 which is processed by the kernel loader. */
1642
1643 /* There are two relocations for the initial PLT entry: an
1644 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
1645 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
1646
1647 if (h->plt.offset == PLT_ENTRY_SIZE)
1648 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
1649
1650 /* There are two extra relocations for each subsequent PLT entry:
1651 an R_386_32 relocation for the GOT entry, and an R_386_32
1652 relocation for the PLT entry. */
1653
1654 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
1655 }
6725bdbf 1656 }
ced53ee5
AM		 1657 else
1658 {
51b64d56 1659 h->plt.offset = (bfd_vma) -1;
f5385ebf 1660 h->needs_plt = 0;
ced53ee5 1661 }
6725bdbf
AM		 1662 }
1663 else
1664 {
51b64d56 1665 h->plt.offset = (bfd_vma) -1;
f5385ebf 1666 h->needs_plt = 0;
6725bdbf
AM		 1667 }
1668
67a4f2b7
AO		 1669 eh = (struct elf_i386_link_hash_entry *) h;
1670 eh->tlsdesc_got = (bfd_vma) -1;
1671
37e55690 1672 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 1673 make it a R_386_TLS_LE_32 requiring no TLS entry. */
1674 if (h->got.refcount > 0
1675 && !info->shared
1676 && h->dynindx == -1
37e55690 1677 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 1678 h->got.offset = (bfd_vma) -1;
13ae64f3 1679 else if (h->got.refcount > 0)
6725bdbf 1680 {
0ac8d2ca 1681 asection *s;
b34976b6 1682 bfd_boolean dyn;
13ae64f3 1683 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 1684
5a15f56f
AM		 1685 /* Make sure this symbol is output as a dynamic symbol.
1686 Undefined weak syms won't yet be marked as dynamic. */
1687 if (h->dynindx == -1
f5385ebf 1688 && !h->forced_local)
5a15f56f 1689 {
c152c796 1690 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1691 return FALSE;
5a15f56f
AM		 1692 }
1693
6725bdbf 1694 s = htab->sgot;
67a4f2b7
AO		 1695 if (GOT_TLS_GDESC_P (tls_type))
1696 {
1697 eh->tlsdesc_got = htab->sgotplt->size
1698 - elf_i386_compute_jump_table_size (htab);
1699 htab->sgotplt->size += 8;
1700 h->got.offset = (bfd_vma) -2;
1701 }
1702 if (! GOT_TLS_GDESC_P (tls_type)
1703 || GOT_TLS_GD_P (tls_type))
1704 {
1705 h->got.offset = s->size;
1706 s->size += 4;
1707 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
1708 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
1709 s->size += 4;
1710 }
ebe50bae 1711 dyn = htab->elf.dynamic_sections_created;
13ae64f3 1712 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 1713 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
1714 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
1715 need two), R_386_TLS_GD needs one if local symbol and two if
1716 global. */
1717 if (tls_type == GOT_TLS_IE_BOTH)
eea6121a 1718 htab->srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 1719 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 1720 || (tls_type & GOT_TLS_IE))
eea6121a 1721 htab->srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 1722 else if (GOT_TLS_GD_P (tls_type))
eea6121a 1723 htab->srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 1724 else if (! GOT_TLS_GDESC_P (tls_type)
1725 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1726 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 1727 && (info->shared
1728 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
eea6121a 1729 htab->srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7
AO		 1730 if (GOT_TLS_GDESC_P (tls_type))
1731 htab->srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 1732 }
1733 else
51b64d56 1734 h->got.offset = (bfd_vma) -1;
6725bdbf 1735
5a15f56f 1736 if (eh->dyn_relocs == NULL)
b34976b6 1737 return TRUE;
5a15f56f 1738
0c715baa
AM		 1739 /* In the shared -Bsymbolic case, discard space allocated for
1740 dynamic pc-relative relocs against symbols which turn out to be
1741 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 1742 space for pc-relative relocs that have become local due to symbol
1743 visibility changes. */
0c715baa
AM		 1744
1745 if (info->shared)
5a15f56f 1746 {
09695f56
AM		 1747 /* The only reloc that uses pc_count is R_386_PC32, which will
1748 appear on a call or on something like ".long foo - .". We
1749 want calls to protected symbols to resolve directly to the
1750 function rather than going via the plt. If people want
1751 function pointer comparisons to work as expected then they
1752 should avoid writing assembly like ".long foo - .". */
1753 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 1754 {
0c715baa
AM		 1755 struct elf_i386_dyn_relocs **pp;
1756
1757 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1758 {
1759 p->count -= p->pc_count;
1760 p->pc_count = 0;
1761 if (p->count == 0)
1762 *pp = p->next;
1763 else
1764 pp = &p->next;
1765 }
5a15f56f 1766 }
4e795f50
AM		 1767
1768 /* Also discard relocs on undefined weak syms with non-default
1769 visibility. */
22d606e9 1770 if (eh->dyn_relocs != NULL
4e795f50 1771 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1772 {
1773 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1774 eh->dyn_relocs = NULL;
1775
1776 /* Make sure undefined weak symbols are output as a dynamic
1777 symbol in PIEs. */
1778 else if (h->dynindx == -1
1779 && !h->forced_local)
1780 {
1781 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1782 return FALSE;
1783 }
1784 }
0c715baa 1785 }
a23b6845 1786 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 1787 {
1788 /* For the non-shared case, discard space for relocs against
1789 symbols which turn out to need copy relocs or are not
1790 dynamic. */
1791
f5385ebf
AM		 1792 if (!h->non_got_ref
1793 && ((h->def_dynamic
1794 && !h->def_regular)
ebe50bae 1795 || (htab->elf.dynamic_sections_created
0c715baa
AM		 1796 && (h->root.type == bfd_link_hash_undefweak
1797 || h->root.type == bfd_link_hash_undefined))))
1798 {
1799 /* Make sure this symbol is output as a dynamic symbol.
1800 Undefined weak syms won't yet be marked as dynamic. */
1801 if (h->dynindx == -1
f5385ebf 1802 && !h->forced_local)
0c715baa 1803 {
c152c796 1804 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1805 return FALSE;
0c715baa 1806 }
5a15f56f 1807
0c715baa
AM		 1808 /* If that succeeded, we know we'll be keeping all the
1809 relocs. */
1810 if (h->dynindx != -1)
1811 goto keep;
1812 }
1813
1814 eh->dyn_relocs = NULL;
1815
ec338859 1816 keep: ;
5a15f56f
AM		 1817 }
1818
0c715baa
AM		 1819 /* Finally, allocate space. */
1820 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 1821 {
0c715baa 1822 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1823 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 1824 }
1825
b34976b6 1826 return TRUE;
6725bdbf
AM		 1827}
1828
0c715baa
AM		 1829/* Find any dynamic relocs that apply to read-only sections. */
1830
b34976b6 1831static bfd_boolean
55fd94b0 1832readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 1833{
1834 struct elf_i386_link_hash_entry *eh;
1835 struct elf_i386_dyn_relocs *p;
1836
e92d460e
AM		 1837 if (h->root.type == bfd_link_hash_warning)
1838 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1839
0c715baa
AM		 1840 eh = (struct elf_i386_link_hash_entry *) h;
1841 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1842 {
1843 asection *s = p->sec->output_section;
1844
1845 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1846 {
1847 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1848
1849 info->flags |= DF_TEXTREL;
1850
1851 /* Not an error, just cut short the traversal. */
b34976b6 1852 return FALSE;
0c715baa
AM		 1853 }
1854 }
b34976b6 1855 return TRUE;
0c715baa
AM		 1856}
1857
252b5132
RH		 1858/* Set the sizes of the dynamic sections. */
1859
b34976b6 1860static bfd_boolean
55fd94b0
AM		 1861elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1862 struct bfd_link_info *info)
252b5132 1863{
6725bdbf 1864 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1865 bfd *dynobj;
1866 asection *s;
b34976b6 1867 bfd_boolean relocs;
0c715baa 1868 bfd *ibfd;
252b5132 1869
6725bdbf 1870 htab = elf_i386_hash_table (info);
ebe50bae 1871 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 1872 if (dynobj == NULL)
1873 abort ();
252b5132 1874
ebe50bae 1875 if (htab->elf.dynamic_sections_created)
252b5132
RH		 1876 {
1877 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 1878 if (info->executable)
252b5132
RH		 1879 {
1880 s = bfd_get_section_by_name (dynobj, ".interp");
ffb2e45b
AM		 1881 if (s == NULL)
1882 abort ();
eea6121a 1883 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 1884 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1885 }
161d71a6 1886 }
6725bdbf 1887
0c715baa
AM		 1888 /* Set up .got offsets for local syms, and space for local dynamic
1889 relocs. */
1890 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 1891 {
1892 bfd_signed_vma *local_got;
1893 bfd_signed_vma *end_local_got;
13ae64f3 1894 char *local_tls_type;
67a4f2b7 1895 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 1896 bfd_size_type locsymcount;
1897 Elf_Internal_Shdr *symtab_hdr;
1898 asection *srel;
6725bdbf 1899
0c715baa 1900 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
161d71a6 1901 continue;
6725bdbf 1902
0c715baa
AM		 1903 for (s = ibfd->sections; s != NULL; s = s->next)
1904 {
ec338859 1905 struct elf_i386_dyn_relocs *p;
0c715baa 1906
e81d3500
DD		 1907 for (p = ((struct elf_i386_dyn_relocs *)
1908 elf_section_data (s)->local_dynrel);
ec338859
AM		 1909 p != NULL;
1910 p = p->next)
0c715baa 1911 {
ec338859
AM		 1912 if (!bfd_is_abs_section (p->sec)
1913 && bfd_is_abs_section (p->sec->output_section))
1914 {
1915 /* Input section has been discarded, either because
1916 it is a copy of a linkonce section or due to
1917 linker script /DISCARD/, so we'll be discarding
1918 the relocs too. */
1919 }
248866a8 1920 else if (p->count != 0)
ec338859
AM		 1921 {
1922 srel = elf_section_data (p->sec)->sreloc;
eea6121a 1923 srel->size += p->count * sizeof (Elf32_External_Rel);
248866a8
AM		 1924 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1925 info->flags |= DF_TEXTREL;
ec338859 1926 }
0c715baa
AM		 1927 }
1928 }
1929
1930 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 1931 if (!local_got)
1932 continue;
6725bdbf 1933
0c715baa 1934 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
161d71a6
L		 1935 locsymcount = symtab_hdr->sh_info;
1936 end_local_got = local_got + locsymcount;
13ae64f3 1937 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 1938 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
161d71a6
L		 1939 s = htab->sgot;
1940 srel = htab->srelgot;
67a4f2b7
AO		 1941 for (; local_got < end_local_got;
1942 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 1943 {
67a4f2b7 1944 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 1945 if (*local_got > 0)
6725bdbf 1946 {
67a4f2b7
AO		 1947 if (GOT_TLS_GDESC_P (*local_tls_type))
1948 {
1949 *local_tlsdesc_gotent = htab->sgotplt->size
1950 - elf_i386_compute_jump_table_size (htab);
1951 htab->sgotplt->size += 8;
1952 *local_got = (bfd_vma) -2;
1953 }
1954 if (! GOT_TLS_GDESC_P (*local_tls_type)
1955 || GOT_TLS_GD_P (*local_tls_type))
1956 {
1957 *local_got = s->size;
1958 s->size += 4;
1959 if (GOT_TLS_GD_P (*local_tls_type)
1960 || *local_tls_type == GOT_TLS_IE_BOTH)
1961 s->size += 4;
1962 }
13ae64f3 1963 if (info->shared
67a4f2b7 1964 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 1965 || (*local_tls_type & GOT_TLS_IE))
1966 {
1967 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 1968 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 1969 else if (GOT_TLS_GD_P (*local_tls_type)
1970 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 1971 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7
AO		 1972 if (GOT_TLS_GDESC_P (*local_tls_type))
1973 htab->srelplt->size += sizeof (Elf32_External_Rel);
37e55690 1974 }
6725bdbf 1975 }
161d71a6
L		 1976 else
1977 *local_got = (bfd_vma) -1;
6725bdbf 1978 }
252b5132 1979 }
6725bdbf 1980
13ae64f3
JJ		 1981 if (htab->tls_ldm_got.refcount > 0)
1982 {
1983 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
1984 relocs. */
eea6121a
AM		 1985 htab->tls_ldm_got.offset = htab->sgot->size;
1986 htab->sgot->size += 8;
1987 htab->srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 1988 }
1989 else
1990 htab->tls_ldm_got.offset = -1;
1991
0c715baa
AM		 1992 /* Allocate global sym .plt and .got entries, and space for global
1993 sym dynamic relocs. */
ebe50bae 1994 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
252b5132 1995
67a4f2b7
AO		 1996 /* For every jump slot reserved in the sgotplt, reloc_count is
1997 incremented. However, when we reserve space for TLS descriptors,
1998 it's not incremented, so in order to compute the space reserved
1999 for them, it suffices to multiply the reloc count by the jump
2000 slot size. */
2001 if (htab->srelplt)
5ae0bfb6 2002 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
67a4f2b7 2003
5a15f56f
AM		 2004 /* We now have determined the sizes of the various dynamic sections.
2005 Allocate memory for them. */
b34976b6 2006 relocs = FALSE;
252b5132
RH		 2007 for (s = dynobj->sections; s != NULL; s = s->next)
2008 {
eac338cf
PB		 2009 bfd_boolean strip_section = TRUE;
2010
252b5132
RH		 2011 if ((s->flags & SEC_LINKER_CREATED) == 0)
2012 continue;
2013
6725bdbf
AM		 2014 if (s == htab->splt
2015 || s == htab->sgot
75ff4589
L		 2016 || s == htab->sgotplt
2017 || s == htab->sdynbss)
252b5132 2018 {
6725bdbf
AM		 2019 /* Strip this section if we don't need it; see the
2020 comment below. */
eac338cf
PB		 2021 /* We'd like to strip these sections if they aren't needed, but if
2022 we've exported dynamic symbols from them we must leave them.
2023 It's too late to tell BFD to get rid of the symbols. */
2024
7325306f 2025 if (htab->elf.hplt != NULL)
eac338cf 2026 strip_section = FALSE;
252b5132 2027 }
0112cd26 2028 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2029 {
eac338cf 2030 if (s->size != 0 && s != htab->srelplt && s != htab->srelplt2)
b34976b6 2031 relocs = TRUE;
252b5132 2032
0ac8d2ca
AM		 2033 /* We use the reloc_count field as a counter if we need
2034 to copy relocs into the output file. */
5ae0bfb6 2035 s->reloc_count = 0;
252b5132 2036 }
6725bdbf 2037 else
252b5132
RH		 2038 {
2039 /* It's not one of our sections, so don't allocate space. */
2040 continue;
2041 }
2042
c456f082 2043 if (s->size == 0)
252b5132 2044 {
0ac8d2ca
AM		 2045 /* If we don't need this section, strip it from the
2046 output file. This is mostly to handle .rel.bss and
2047 .rel.plt. We must create both sections in
2048 create_dynamic_sections, because they must be created
2049 before the linker maps input sections to output
2050 sections. The linker does that before
2051 adjust_dynamic_symbol is called, and it is that
2052 function which decides whether anything needs to go
2053 into these sections. */
c456f082
AM		 2054 if (strip_section)
2055 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2056 continue;
2057 }
2058
c456f082
AM		 2059 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2060 continue;
2061
f69da49f
AM		 2062 /* Allocate memory for the section contents. We use bfd_zalloc
2063 here in case unused entries are not reclaimed before the
2064 section's contents are written out. This should not happen,
2065 but this way if it does, we get a R_386_NONE reloc instead
2066 of garbage. */
eea6121a 2067 s->contents = bfd_zalloc (dynobj, s->size);
6725bdbf 2068 if (s->contents == NULL)
b34976b6 2069 return FALSE;
252b5132
RH		 2070 }
2071
ebe50bae 2072 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2073 {
2074 /* Add some entries to the .dynamic section. We fill in the
2075 values later, in elf_i386_finish_dynamic_sections, but we
2076 must add the entries now so that we get the correct size for
2077 the .dynamic section. The DT_DEBUG entry is filled in by the
2078 dynamic linker and used by the debugger. */
dc810e39 2079#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2080 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2081
36af4a4e 2082 if (info->executable)
252b5132 2083 {
dc810e39 2084 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2085 return FALSE;
252b5132
RH		 2086 }
2087
eea6121a 2088 if (htab->splt->size != 0)
252b5132 2089 {
dc810e39
AM		 2090 if (!add_dynamic_entry (DT_PLTGOT, 0)
2091 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2092 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2093 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2094 return FALSE;
252b5132
RH		 2095 }
2096
2097 if (relocs)
2098 {
dc810e39
AM		 2099 if (!add_dynamic_entry (DT_REL, 0)
2100 || !add_dynamic_entry (DT_RELSZ, 0)
2101 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 2102 return FALSE;
252b5132 2103
0c715baa
AM		 2104 /* If any dynamic relocs apply to a read-only section,
2105 then we need a DT_TEXTREL entry. */
248866a8
AM		 2106 if ((info->flags & DF_TEXTREL) == 0)
2107 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2108 (PTR) info);
0c715baa
AM		 2109
2110 if ((info->flags & DF_TEXTREL) != 0)
2111 {
2112 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2113 return FALSE;
0c715baa 2114 }
252b5132
RH		 2115 }
2116 }
dc810e39 2117#undef add_dynamic_entry
252b5132 2118
b34976b6 2119 return TRUE;
252b5132
RH		 2120}
2121
67a4f2b7
AO		 2122static bfd_boolean
2123elf_i386_always_size_sections (bfd *output_bfd,
2124 struct bfd_link_info *info)
2125{
2126 asection *tls_sec = elf_hash_table (info)->tls_sec;
2127
2128 if (tls_sec)
2129 {
2130 struct elf_link_hash_entry *tlsbase;
2131
2132 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
2133 "_TLS_MODULE_BASE_",
2134 FALSE, FALSE, FALSE);
2135
2136 if (tlsbase && tlsbase->type == STT_TLS)
2137 {
2138 struct bfd_link_hash_entry *bh = NULL;
2139 const struct elf_backend_data *bed
2140 = get_elf_backend_data (output_bfd);
2141
2142 if (!(_bfd_generic_link_add_one_symbol
2143 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
2144 tls_sec, 0, NULL, FALSE,
2145 bed->collect, &bh)))
2146 return FALSE;
2147 tlsbase = (struct elf_link_hash_entry *)bh;
2148 tlsbase->def_regular = 1;
2149 tlsbase->other = STV_HIDDEN;
2150 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
2151 }
2152 }
2153
2154 return TRUE;
2155}
2156
38701953
AM		 2157/* Set the correct type for an x86 ELF section. We do this by the
2158 section name, which is a hack, but ought to work. */
2159
b34976b6 2160static bfd_boolean
55fd94b0
AM		 2161elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2162 Elf_Internal_Shdr *hdr,
2163 asection *sec)
38701953
AM		 2164{
2165 register const char *name;
2166
2167 name = bfd_get_section_name (abfd, sec);
2168
2169 /* This is an ugly, but unfortunately necessary hack that is
2170 needed when producing EFI binaries on x86. It tells
2171 elf.c:elf_fake_sections() not to consider ".reloc" as a section
2172 containing ELF relocation info. We need this hack in order to
2173 be able to generate ELF binaries that can be translated into
2174 EFI applications (which are essentially COFF objects). Those
2175 files contain a COFF ".reloc" section inside an ELFNN object,
2176 which would normally cause BFD to segfault because it would
2177 attempt to interpret this section as containing relocation
2178 entries for section "oc". With this hack enabled, ".reloc"
2179 will be treated as a normal data section, which will avoid the
2180 segfault. However, you won't be able to create an ELFNN binary
2181 with a section named "oc" that needs relocations, but that's
2182 the kind of ugly side-effects you get when detecting section
2183 types based on their names... In practice, this limitation is
2184 unlikely to bite. */
2185 if (strcmp (name, ".reloc") == 0)
2186 hdr->sh_type = SHT_PROGBITS;
2187
b34976b6 2188 return TRUE;
38701953
AM		 2189}
2190
13ae64f3
JJ		 2191/* Return the base VMA address which should be subtracted from real addresses
2192 when resolving @dtpoff relocation.
2193 This is PT_TLS segment p_vaddr. */
2194
2195static bfd_vma
55fd94b0 2196dtpoff_base (struct bfd_link_info *info)
13ae64f3 2197{
e1918d23
AM		 2198 /* If tls_sec is NULL, we should have signalled an error already. */
2199 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 2200 return 0;
e1918d23 2201 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 2202}
2203
2204/* Return the relocation value for @tpoff relocation
2205 if STT_TLS virtual address is ADDRESS. */
2206
2207static bfd_vma
55fd94b0 2208tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 2209{
e1918d23 2210 struct elf_link_hash_table *htab = elf_hash_table (info);
13ae64f3 2211
e1918d23
AM		 2212 /* If tls_sec is NULL, we should have signalled an error already. */
2213 if (htab->tls_sec == NULL)
6a30718d 2214 return 0;
e1918d23 2215 return htab->tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 2216}
2217
252b5132
RH		 2218/* Relocate an i386 ELF section. */
2219
b34976b6 2220static bfd_boolean
55fd94b0
AM		 2221elf_i386_relocate_section (bfd *output_bfd,
2222 struct bfd_link_info *info,
2223 bfd *input_bfd,
2224 asection *input_section,
2225 bfd_byte *contents,
2226 Elf_Internal_Rela *relocs,
2227 Elf_Internal_Sym *local_syms,
2228 asection **local_sections)
252b5132 2229{
6725bdbf 2230 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2231 Elf_Internal_Shdr *symtab_hdr;
2232 struct elf_link_hash_entry **sym_hashes;
2233 bfd_vma *local_got_offsets;
67a4f2b7 2234 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 2235 Elf_Internal_Rela *rel;
2236 Elf_Internal_Rela *relend;
2237
6725bdbf 2238 htab = elf_i386_hash_table (info);
252b5132
RH		 2239 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2240 sym_hashes = elf_sym_hashes (input_bfd);
2241 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 2242 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
252b5132 2243
252b5132
RH		 2244 rel = relocs;
2245 relend = relocs + input_section->reloc_count;
2246 for (; rel < relend; rel++)
2247 {
13ae64f3 2248 unsigned int r_type;
252b5132
RH		 2249 reloc_howto_type *howto;
2250 unsigned long r_symndx;
2251 struct elf_link_hash_entry *h;
2252 Elf_Internal_Sym *sym;
2253 asection *sec;
67a4f2b7 2254 bfd_vma off, offplt;
252b5132 2255 bfd_vma relocation;
b34976b6 2256 bfd_boolean unresolved_reloc;
252b5132 2257 bfd_reloc_status_type r;
1b452ec6 2258 unsigned int indx;
13ae64f3 2259 int tls_type;
252b5132
RH		 2260
2261 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 2262 if (r_type == R_386_GNU_VTINHERIT
2263 || r_type == R_386_GNU_VTENTRY)
252b5132 2264 continue;
dc47f327 2265
55fd94b0 2266 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 2267 && ((indx = r_type - R_386_ext_offset) - R_386_standard
2268 >= R_386_ext - R_386_standard)
2269 && ((indx = r_type - R_386_tls_offset) - R_386_ext
2270 >= R_386_tls - R_386_ext))
252b5132 2271 {
6ba842b6 2272 (*_bfd_error_handler)
d003868e
AM		 2273 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
2274 input_bfd, input_section, r_type);
252b5132 2275 bfd_set_error (bfd_error_bad_value);
b34976b6 2276 return FALSE;
252b5132 2277 }
1b452ec6 2278 howto = elf_howto_table + indx;
252b5132
RH		 2279
2280 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH		 2281 h = NULL;
2282 sym = NULL;
2283 sec = NULL;
b34976b6 2284 unresolved_reloc = FALSE;
252b5132
RH		 2285 if (r_symndx < symtab_hdr->sh_info)
2286 {
2287 sym = local_syms + r_symndx;
2288 sec = local_sections[r_symndx];
2289 relocation = (sec->output_section->vma
2290 + sec->output_offset
2291 + sym->st_value);
ab96bf03
AM		 2292
2293 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
2294 && ((sec->flags & SEC_MERGE) != 0
2295 || (info->relocatable
2296 && sec->output_offset != 0)))
f8df10f4 2297 {
f8df10f4 2298 bfd_vma addend;
4a335f3d 2299 bfd_byte *where = contents + rel->r_offset;
f8df10f4 2300
4a335f3d 2301 switch (howto->size)
f8df10f4 2302 {
4a335f3d
AM		 2303 case 0:
2304 addend = bfd_get_8 (input_bfd, where);
2305 if (howto->pc_relative)
2306 {
2307 addend = (addend ^ 0x80) - 0x80;
2308 addend += 1;
2309 }
2310 break;
2311 case 1:
2312 addend = bfd_get_16 (input_bfd, where);
2313 if (howto->pc_relative)
2314 {
2315 addend = (addend ^ 0x8000) - 0x8000;
2316 addend += 2;
2317 }
2318 break;
2319 case 2:
2320 addend = bfd_get_32 (input_bfd, where);
2321 if (howto->pc_relative)
2322 {
2323 addend = (addend ^ 0x80000000) - 0x80000000;
2324 addend += 4;
2325 }
2326 break;
2327 default:
2328 abort ();
f8df10f4
JJ		 2329 }
2330
ab96bf03
AM		 2331 if (info->relocatable)
2332 addend += sec->output_offset;
2333 else
2334 {
2335 asection *msec = sec;
2336 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
2337 addend);
2338 addend -= relocation;
2339 addend += msec->output_section->vma + msec->output_offset;
2340 }
4a335f3d
AM		 2341
2342 switch (howto->size)
2343 {
2344 case 0:
16a10388 2345 /* FIXME: overflow checks. */
4a335f3d
AM		 2346 if (howto->pc_relative)
2347 addend -= 1;
2348 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 2349 break;
2350 case 1:
2351 if (howto->pc_relative)
2352 addend -= 2;
2353 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 2354 break;
2355 case 2:
2356 if (howto->pc_relative)
2357 addend -= 4;
2358 bfd_put_32 (input_bfd, addend, where);
2359 break;
2360 }
f8df10f4 2361 }
252b5132
RH		 2362 }
2363 else
2364 {
560e09e9 2365 bfd_boolean warned;
ffb2e45b 2366
b2a8e766
AM		 2367 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2368 r_symndx, symtab_hdr, sym_hashes,
2369 h, sec, relocation,
2370 unresolved_reloc, warned);
252b5132
RH		 2371 }
2372
ab96bf03 2373 if (sec != NULL && elf_discarded_section (sec))
9635fe29 2374 {
ab96bf03
AM		 2375 /* For relocs against symbols from removed linkonce sections,
2376 or sections discarded by a linker script, we just want the
2377 section contents zeroed. Avoid any special processing. */
b1e24c02 2378 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
ab96bf03
AM		 2379 rel->r_info = 0;
2380 rel->r_addend = 0;
b1e24c02 2381 continue;
9635fe29
AM		 2382 }
2383
ab96bf03
AM		 2384 if (info->relocatable)
2385 continue;
2386
252b5132
RH		 2387 switch (r_type)
2388 {
2389 case R_386_GOT32:
2390 /* Relocation is to the entry for this symbol in the global
2391 offset table. */
ffb2e45b
AM		 2392 if (htab->sgot == NULL)
2393 abort ();
252b5132
RH		 2394
2395 if (h != NULL)
2396 {
b34976b6 2397 bfd_boolean dyn;
252b5132
RH		 2398
2399 off = h->got.offset;
ebe50bae 2400 dyn = htab->elf.dynamic_sections_created;
26e41594 2401 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 2402 || (info->shared
586119b3 2403 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 2404 || (ELF_ST_VISIBILITY (h->other)
2405 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2406 {
2407 /* This is actually a static link, or it is a
2408 -Bsymbolic link and the symbol is defined
2409 locally, or the symbol was forced to be local
2410 because of a version file. We must initialize
2411 this entry in the global offset table. Since the
2412 offset must always be a multiple of 4, we use the
2413 least significant bit to record whether we have
2414 initialized it already.
2415
2416 When doing a dynamic link, we create a .rel.got
2417 relocation entry to initialize the value. This
2418 is done in the finish_dynamic_symbol routine. */
2419 if ((off & 1) != 0)
2420 off &= ~1;
2421 else
2422 {
2423 bfd_put_32 (output_bfd, relocation,
6725bdbf 2424 htab->sgot->contents + off);
252b5132
RH		 2425 h->got.offset |= 1;
2426 }
2427 }
8c694914 2428 else
b34976b6 2429 unresolved_reloc = FALSE;
252b5132
RH		 2430 }
2431 else
2432 {
ffb2e45b
AM		 2433 if (local_got_offsets == NULL)
2434 abort ();
252b5132
RH		 2435
2436 off = local_got_offsets[r_symndx];
2437
2438 /* The offset must always be a multiple of 4. We use
83be169b
AM		 2439 the least significant bit to record whether we have
2440 already generated the necessary reloc. */
252b5132
RH		 2441 if ((off & 1) != 0)
2442 off &= ~1;
2443 else
2444 {
6725bdbf
AM		 2445 bfd_put_32 (output_bfd, relocation,
2446 htab->sgot->contents + off);
252b5132
RH		 2447
2448 if (info->shared)
2449 {
947216bf
AM		 2450 asection *s;
2451 Elf_Internal_Rela outrel;
2452 bfd_byte *loc;
252b5132 2453
947216bf
AM		 2454 s = htab->srelgot;
2455 if (s == NULL)
ffb2e45b 2456 abort ();
252b5132 2457
6725bdbf
AM		 2458 outrel.r_offset = (htab->sgot->output_section->vma
2459 + htab->sgot->output_offset
252b5132
RH		 2460 + off);
2461 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
947216bf
AM		 2462 loc = s->contents;
2463 loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 2464 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 2465 }
2466
2467 local_got_offsets[r_symndx] |= 1;
2468 }
252b5132
RH		 2469 }
2470
ffb2e45b
AM		 2471 if (off >= (bfd_vma) -2)
2472 abort ();
2473
8c37241b
JJ		 2474 relocation = htab->sgot->output_section->vma
2475 + htab->sgot->output_offset + off
2476 - htab->sgotplt->output_section->vma
2477 - htab->sgotplt->output_offset;
252b5132
RH		 2478 break;
2479
2480 case R_386_GOTOFF:
2481 /* Relocation is relative to the start of the global offset
2482 table. */
2483
90f487df
L		 2484 /* Check to make sure it isn't a protected function symbol
2485 for shared library since it may not be local when used
2486 as function address. */
2487 if (info->shared
8fe76924 2488 && !info->executable
90f487df
L		 2489 && h
2490 && h->def_regular
2491 && h->type == STT_FUNC
2492 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2493 {
2494 (*_bfd_error_handler)
2495 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
2496 input_bfd, h->root.root.string);
2497 bfd_set_error (bfd_error_bad_value);
2498 return FALSE;
2499 }
2500
8c37241b
JJ		 2501 /* Note that sgot is not involved in this
2502 calculation. We always want the start of .got.plt. If we
2503 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 2504 permitted by the ABI, we might have to change this
2505 calculation. */
8c37241b
JJ		 2506 relocation -= htab->sgotplt->output_section->vma
2507 + htab->sgotplt->output_offset;
252b5132
RH		 2508 break;
2509
2510 case R_386_GOTPC:
2511 /* Use global offset table as symbol value. */
8c37241b
JJ		 2512 relocation = htab->sgotplt->output_section->vma
2513 + htab->sgotplt->output_offset;
b34976b6 2514 unresolved_reloc = FALSE;
252b5132
RH		 2515 break;
2516
2517 case R_386_PLT32:
2518 /* Relocation is to the entry for this symbol in the
2519 procedure linkage table. */
2520
dd5724d5 2521 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 2522 without using the procedure linkage table. */
252b5132
RH		 2523 if (h == NULL)
2524 break;
2525
dd5724d5 2526 if (h->plt.offset == (bfd_vma) -1
6725bdbf 2527 || htab->splt == NULL)
252b5132
RH		 2528 {
2529 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 2530 happens when statically linking PIC code, or when
2531 using -Bsymbolic. */
252b5132
RH		 2532 break;
2533 }
2534
6725bdbf
AM		 2535 relocation = (htab->splt->output_section->vma
2536 + htab->splt->output_offset
252b5132 2537 + h->plt.offset);
b34976b6 2538 unresolved_reloc = FALSE;
252b5132
RH		 2539 break;
2540
2541 case R_386_32:
2542 case R_386_PC32:
f855931b 2543 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2544 break;
2545
12d0ee4a 2546 if ((info->shared
ef5aade5
L		 2547 && (h == NULL
2548 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2549 || h->root.type != bfd_link_hash_undefweak)
12d0ee4a 2550 && (r_type != R_386_PC32
f6c52c13 2551 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 2552 || (ELIMINATE_COPY_RELOCS
2553 && !info->shared
12d0ee4a
AM		 2554 && h != NULL
2555 && h->dynindx != -1
f5385ebf
AM		 2556 && !h->non_got_ref
2557 && ((h->def_dynamic
2558 && !h->def_regular)
28d0b90e
AM		 2559 || h->root.type == bfd_link_hash_undefweak
2560 || h->root.type == bfd_link_hash_undefined)))
252b5132 2561 {
947216bf
AM		 2562 Elf_Internal_Rela outrel;
2563 bfd_byte *loc;
b34976b6 2564 bfd_boolean skip, relocate;
0c715baa 2565 asection *sreloc;
252b5132
RH		 2566
2567 /* When generating a shared object, these relocations
2568 are copied into the output file to be resolved at run
2569 time. */
2570
b34976b6
AM		 2571 skip = FALSE;
2572 relocate = FALSE;
252b5132 2573
c629eae0
JJ		 2574 outrel.r_offset =
2575 _bfd_elf_section_offset (output_bfd, info, input_section,
2576 rel->r_offset);
2577 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2578 skip = TRUE;
0bb2d96a 2579 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2580 skip = TRUE, relocate = TRUE;
252b5132
RH		 2581 outrel.r_offset += (input_section->output_section->vma
2582 + input_section->output_offset);
2583
2584 if (skip)
0bb2d96a 2585 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 2586 else if (h != NULL
2587 && h->dynindx != -1
2588 && (r_type == R_386_PC32
2589 || !info->shared
55255dae 2590 || !SYMBOLIC_BIND (info, h)
f5385ebf 2591 || !h->def_regular))
0bb2d96a 2592 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 2593 else
2594 {
5a15f56f 2595 /* This symbol is local, or marked to become local. */
b34976b6 2596 relocate = TRUE;
5a15f56f 2597 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 2598 }
2599
0c715baa
AM		 2600 sreloc = elf_section_data (input_section)->sreloc;
2601 if (sreloc == NULL)
2602 abort ();
2603
947216bf
AM		 2604 loc = sreloc->contents;
2605 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
0c715baa 2606 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 2607
2608 /* If this reloc is against an external symbol, we do
2609 not want to fiddle with the addend. Otherwise, we
2610 need to include the symbol value so that it becomes
2611 an addend for the dynamic reloc. */
2612 if (! relocate)
2613 continue;
2614 }
252b5132
RH		 2615 break;
2616
37e55690
JJ		 2617 case R_386_TLS_IE:
2618 if (info->shared)
2619 {
947216bf
AM		 2620 Elf_Internal_Rela outrel;
2621 bfd_byte *loc;
37e55690 2622 asection *sreloc;
37e55690
JJ		 2623
2624 outrel.r_offset = rel->r_offset
2625 + input_section->output_section->vma
2626 + input_section->output_offset;
2627 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2628 sreloc = elf_section_data (input_section)->sreloc;
2629 if (sreloc == NULL)
2630 abort ();
947216bf
AM		 2631 loc = sreloc->contents;
2632 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 2633 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2634 }
2635 /* Fall through */
2636
13ae64f3 2637 case R_386_TLS_GD:
67a4f2b7
AO		 2638 case R_386_TLS_GOTDESC:
2639 case R_386_TLS_DESC_CALL:
13ae64f3 2640 case R_386_TLS_IE_32:
37e55690 2641 case R_386_TLS_GOTIE:
13ae64f3
JJ		 2642 r_type = elf_i386_tls_transition (info, r_type, h == NULL);
2643 tls_type = GOT_UNKNOWN;
2644 if (h == NULL && local_got_offsets)
2645 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
2646 else if (h != NULL)
2647 {
2648 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690 2649 if (!info->shared && h->dynindx == -1 && (tls_type & GOT_TLS_IE))
13ae64f3
JJ		 2650 r_type = R_386_TLS_LE_32;
2651 }
37e55690
JJ		 2652 if (tls_type == GOT_TLS_IE)
2653 tls_type = GOT_TLS_IE_NEG;
67a4f2b7
AO		 2654 if (r_type == R_386_TLS_GD
2655 || r_type == R_386_TLS_GOTDESC
2656 || r_type == R_386_TLS_DESC_CALL)
37e55690
JJ		 2657 {
2658 if (tls_type == GOT_TLS_IE_POS)
2659 r_type = R_386_TLS_GOTIE;
2660 else if (tls_type & GOT_TLS_IE)
2661 r_type = R_386_TLS_IE_32;
2662 }
13ae64f3
JJ		 2663
2664 if (r_type == R_386_TLS_LE_32)
2665 {
82e51918 2666 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 2667 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
2668 {
2669 unsigned int val, type;
2670 bfd_vma roff;
2671
2672 /* GD->LE transition. */
2673 BFD_ASSERT (rel->r_offset >= 2);
2674 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2675 BFD_ASSERT (type == 0x8d || type == 0x04);
eea6121a 2676 BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
13ae64f3
JJ		 2677 BFD_ASSERT (bfd_get_8 (input_bfd,
2678 contents + rel->r_offset + 4)
2679 == 0xe8);
2680 BFD_ASSERT (rel + 1 < relend);
2681 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
2682 roff = rel->r_offset + 5;
2683 val = bfd_get_8 (input_bfd,
2684 contents + rel->r_offset - 1);
2685 if (type == 0x04)
2686 {
2687 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
2688 Change it into:
2689 movl %gs:0, %eax; subl $foo@tpoff, %eax
2690 (6 byte form of subl). */
2691 BFD_ASSERT (rel->r_offset >= 3);
2692 BFD_ASSERT (bfd_get_8 (input_bfd,
2693 contents + rel->r_offset - 3)
2694 == 0x8d);
2695 BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
2696 memcpy (contents + rel->r_offset - 3,
2697 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
2698 }
2699 else
2700 {
2701 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
eea6121a 2702 if (rel->r_offset + 10 <= input_section->size
13ae64f3
JJ		 2703 && bfd_get_8 (input_bfd,
2704 contents + rel->r_offset + 9) == 0x90)
2705 {
2706 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
2707 Change it into:
2708 movl %gs:0, %eax; subl $foo@tpoff, %eax
2709 (6 byte form of subl). */
2710 memcpy (contents + rel->r_offset - 2,
2711 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
2712 roff = rel->r_offset + 6;
2713 }
2714 else
2715 {
2716 /* leal foo(%reg), %eax; call ___tls_get_addr
2717 Change it into:
2718 movl %gs:0, %eax; subl $foo@tpoff, %eax
2719 (5 byte form of subl). */
2720 memcpy (contents + rel->r_offset - 2,
2721 "\x65\xa1\0\0\0\0\x2d\0\0\0", 11);
2722 }
2723 }
2724 bfd_put_32 (output_bfd, tpoff (info, relocation),
2725 contents + roff);
2726 /* Skip R_386_PLT32. */
2727 rel++;
2728 continue;
2729 }
67a4f2b7
AO		 2730 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
2731 {
2732 /* GDesc -> LE transition.
2733 It's originally something like:
2734 leal x@tlsdesc(%ebx), %eax
2735
2736 leal x@ntpoff, %eax
2737
2738 Registers other than %eax may be set up here. */
2739
2740 unsigned int val, type;
2741 bfd_vma roff;
2742
2743 /* First, make sure it's a leal adding ebx to a
2744 32-bit offset into any register, although it's
2745 probably almost always going to be eax. */
2746 roff = rel->r_offset;
2747 BFD_ASSERT (roff >= 2);
2748 type = bfd_get_8 (input_bfd, contents + roff - 2);
2749 BFD_ASSERT (type == 0x8d);
2750 val = bfd_get_8 (input_bfd, contents + roff - 1);
2751 BFD_ASSERT ((val & 0xc7) == 0x83);
2752 BFD_ASSERT (roff + 4 <= input_section->size);
2753
2754 /* Now modify the instruction as appropriate. */
2755 /* aoliva FIXME: remove the above and xor the byte
2756 below with 0x86. */
2757 bfd_put_8 (output_bfd, val ^ 0x86,
2758 contents + roff - 1);
2759 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2760 contents + roff);
2761 continue;
2762 }
2763 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
2764 {
2765 /* GDesc -> LE transition.
2766 It's originally:
2767 call *(%eax)
2768 Turn it into:
2769 nop; nop */
2770
2771 unsigned int val, type;
2772 bfd_vma roff;
2773
2774 /* First, make sure it's a call *(%eax). */
2775 roff = rel->r_offset;
2776 BFD_ASSERT (roff + 2 <= input_section->size);
2777 type = bfd_get_8 (input_bfd, contents + roff);
2778 BFD_ASSERT (type == 0xff);
2779 val = bfd_get_8 (input_bfd, contents + roff + 1);
2780 BFD_ASSERT (val == 0x10);
2781
10efb593
L		 2782 /* Now modify the instruction as appropriate. Use
2783 xchg %ax,%ax instead of 2 nops. */
2784 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 2785 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
2786 continue;
2787 }
37e55690 2788 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3
JJ		 2789 {
2790 unsigned int val, type;
2791
2792 /* IE->LE transition:
37e55690
JJ		 2793 Originally it can be one of:
2794 movl foo, %eax
2795 movl foo, %reg
2796 addl foo, %reg
2797 We change it into:
2798 movl $foo, %eax
2799 movl $foo, %reg
2800 addl $foo, %reg. */
2801 BFD_ASSERT (rel->r_offset >= 1);
2802 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
eea6121a 2803 BFD_ASSERT (rel->r_offset + 4 <= input_section->size);
37e55690
JJ		 2804 if (val == 0xa1)
2805 {
2806 /* movl foo, %eax. */
55fd94b0
AM		 2807 bfd_put_8 (output_bfd, 0xb8,
2808 contents + rel->r_offset - 1);
37e55690 2809 }
299bf759 2810 else
37e55690 2811 {
299bf759 2812 BFD_ASSERT (rel->r_offset >= 2);
55fd94b0
AM		 2813 type = bfd_get_8 (input_bfd,
2814 contents + rel->r_offset - 2);
299bf759 2815 switch (type)
26e41594 2816 {
299bf759
L		 2817 case 0x8b:
2818 /* movl */
2819 BFD_ASSERT ((val & 0xc7) == 0x05);
2820 bfd_put_8 (output_bfd, 0xc7,
2821 contents + rel->r_offset - 2);
2822 bfd_put_8 (output_bfd,
2823 0xc0 | ((val >> 3) & 7),
2824 contents + rel->r_offset - 1);
2825 break;
2826 case 0x03:
2827 /* addl */
2828 BFD_ASSERT ((val & 0xc7) == 0x05);
2829 bfd_put_8 (output_bfd, 0x81,
2830 contents + rel->r_offset - 2);
2831 bfd_put_8 (output_bfd,
2832 0xc0 | ((val >> 3) & 7),
2833 contents + rel->r_offset - 1);
2834 break;
2835 default:
2836 BFD_FAIL ();
2837 break;
26e41594 2838 }
37e55690 2839 }
37e55690
JJ		 2840 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2841 contents + rel->r_offset);
2842 continue;
2843 }
2844 else
2845 {
2846 unsigned int val, type;
2847
2848 /* {IE_32,GOTIE}->LE transition:
2849 Originally it can be one of:
13ae64f3 2850 subl foo(%reg1), %reg2
13ae64f3 2851 movl foo(%reg1), %reg2
37e55690 2852 addl foo(%reg1), %reg2
13ae64f3
JJ		 2853 We change it into:
2854 subl $foo, %reg2
37e55690
JJ		 2855 movl $foo, %reg2 (6 byte form)
2856 addl $foo, %reg2. */
13ae64f3
JJ		 2857 BFD_ASSERT (rel->r_offset >= 2);
2858 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2859 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
eea6121a 2860 BFD_ASSERT (rel->r_offset + 4 <= input_section->size);
37e55690 2861 BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4);
13ae64f3
JJ		 2862 if (type == 0x8b)
2863 {
2864 /* movl */
13ae64f3
JJ		 2865 bfd_put_8 (output_bfd, 0xc7,
2866 contents + rel->r_offset - 2);
2867 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2868 contents + rel->r_offset - 1);
2869 }
2870 else if (type == 0x2b)
2871 {
2872 /* subl */
13ae64f3
JJ		 2873 bfd_put_8 (output_bfd, 0x81,
2874 contents + rel->r_offset - 2);
2875 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
2876 contents + rel->r_offset - 1);
2877 }
37e55690
JJ		 2878 else if (type == 0x03)
2879 {
2880 /* addl */
2881 bfd_put_8 (output_bfd, 0x81,
2882 contents + rel->r_offset - 2);
2883 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2884 contents + rel->r_offset - 1);
2885 }
13ae64f3
JJ		 2886 else
2887 BFD_FAIL ();
37e55690
JJ		 2888 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
2889 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2890 contents + rel->r_offset);
2891 else
2892 bfd_put_32 (output_bfd, tpoff (info, relocation),
2893 contents + rel->r_offset);
13ae64f3
JJ		 2894 continue;
2895 }
2896 }
2897
2898 if (htab->sgot == NULL)
2899 abort ();
2900
2901 if (h != NULL)
67a4f2b7
AO		 2902 {
2903 off = h->got.offset;
2904 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
2905 }
13ae64f3
JJ		 2906 else
2907 {
2908 if (local_got_offsets == NULL)
2909 abort ();
2910
2911 off = local_got_offsets[r_symndx];
67a4f2b7 2912 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 2913 }
2914
2915 if ((off & 1) != 0)
2916 off &= ~1;
26e41594 2917 else
13ae64f3 2918 {
947216bf
AM		 2919 Elf_Internal_Rela outrel;
2920 bfd_byte *loc;
13ae64f3 2921 int dr_type, indx;
67a4f2b7 2922 asection *sreloc;
13ae64f3
JJ		 2923
2924 if (htab->srelgot == NULL)
2925 abort ();
2926
67a4f2b7
AO		 2927 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2928
2929 if (GOT_TLS_GDESC_P (tls_type))
2930 {
2931 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
2932 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
2933 <= htab->sgotplt->size);
2934 outrel.r_offset = (htab->sgotplt->output_section->vma
2935 + htab->sgotplt->output_offset
2936 + offplt
2937 + htab->sgotplt_jump_table_size);
2938 sreloc = htab->srelplt;
2939 loc = sreloc->contents;
5ae0bfb6
RS		 2940 loc += (htab->next_tls_desc_index++
2941 * sizeof (Elf32_External_Rel));
67a4f2b7
AO		 2942 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
2943 <= sreloc->contents + sreloc->size);
2944 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2945 if (indx == 0)
2946 {
2947 BFD_ASSERT (! unresolved_reloc);
2948 bfd_put_32 (output_bfd,
2949 relocation - dtpoff_base (info),
2950 htab->sgotplt->contents + offplt
2951 + htab->sgotplt_jump_table_size + 4);
2952 }
2953 else
2954 {
2955 bfd_put_32 (output_bfd, 0,
2956 htab->sgotplt->contents + offplt
2957 + htab->sgotplt_jump_table_size + 4);
2958 }
2959 }
2960
2961 sreloc = htab->srelgot;
2962
13ae64f3
JJ		 2963 outrel.r_offset = (htab->sgot->output_section->vma
2964 + htab->sgot->output_offset + off);
2965
67a4f2b7 2966 if (GOT_TLS_GD_P (tls_type))
13ae64f3 2967 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 2968 else if (GOT_TLS_GDESC_P (tls_type))
2969 goto dr_done;
37e55690
JJ		 2970 else if (tls_type == GOT_TLS_IE_POS)
2971 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 2972 else
2973 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 2974
37e55690
JJ		 2975 if (dr_type == R_386_TLS_TPOFF && indx == 0)
2976 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
2977 htab->sgot->contents + off);
2978 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
c5c1f40c 2979 bfd_put_32 (output_bfd, dtpoff_base (info) - relocation,
c366c25e 2980 htab->sgot->contents + off);
67a4f2b7 2981 else if (dr_type != R_386_TLS_DESC)
c366c25e
JJ		 2982 bfd_put_32 (output_bfd, 0,
2983 htab->sgot->contents + off);
13ae64f3 2984 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7
AO		 2985
2986 loc = sreloc->contents;
2987 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
2988 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
2989 <= sreloc->contents + sreloc->size);
13ae64f3
JJ		 2990 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2991
67a4f2b7 2992 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 2993 {
2994 if (indx == 0)
2995 {
82e51918 2996 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 2997 bfd_put_32 (output_bfd,
2998 relocation - dtpoff_base (info),
2999 htab->sgot->contents + off + 4);
3000 }
3001 else
3002 {
3003 bfd_put_32 (output_bfd, 0,
3004 htab->sgot->contents + off + 4);
3005 outrel.r_info = ELF32_R_INFO (indx,
3006 R_386_TLS_DTPOFF32);
3007 outrel.r_offset += 4;
67a4f2b7 3008 sreloc->reloc_count++;
947216bf 3009 loc += sizeof (Elf32_External_Rel);
67a4f2b7
AO		 3010 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3011 <= sreloc->contents + sreloc->size);
947216bf 3012 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
13ae64f3
JJ		 3013 }
3014 }
37e55690
JJ		 3015 else if (tls_type == GOT_TLS_IE_BOTH)
3016 {
3017 bfd_put_32 (output_bfd,
3018 indx == 0 ? relocation - dtpoff_base (info) : 0,
3019 htab->sgot->contents + off + 4);
3020 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3021 outrel.r_offset += 4;
67a4f2b7 3022 sreloc->reloc_count++;
947216bf 3023 loc += sizeof (Elf32_External_Rel);
37e55690
JJ		 3024 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3025 }
13ae64f3 3026
67a4f2b7 3027 dr_done:
13ae64f3
JJ		 3028 if (h != NULL)
3029 h->got.offset |= 1;
3030 else
3031 local_got_offsets[r_symndx] |= 1;
3032 }
3033
67a4f2b7
AO		 3034 if (off >= (bfd_vma) -2
3035 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 3036 abort ();
67a4f2b7
AO		 3037 if (r_type == R_386_TLS_GOTDESC
3038 || r_type == R_386_TLS_DESC_CALL)
3039 {
3040 relocation = htab->sgotplt_jump_table_size + offplt;
3041 unresolved_reloc = FALSE;
3042 }
3043 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 3044 {
8c37241b
JJ		 3045 bfd_vma g_o_t = htab->sgotplt->output_section->vma
3046 + htab->sgotplt->output_offset;
3047 relocation = htab->sgot->output_section->vma
67a4f2b7 3048 + htab->sgot->output_offset + off - g_o_t;
37e55690
JJ		 3049 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
3050 && tls_type == GOT_TLS_IE_BOTH)
3051 relocation += 4;
3052 if (r_type == R_386_TLS_IE)
8c37241b 3053 relocation += g_o_t;
b34976b6 3054 unresolved_reloc = FALSE;
13ae64f3 3055 }
67a4f2b7 3056 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 3057 {
3058 unsigned int val, type;
3059 bfd_vma roff;
3060
3061 /* GD->IE transition. */
3062 BFD_ASSERT (rel->r_offset >= 2);
3063 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3064 BFD_ASSERT (type == 0x8d || type == 0x04);
eea6121a 3065 BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
13ae64f3
JJ		 3066 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
3067 == 0xe8);
3068 BFD_ASSERT (rel + 1 < relend);
3069 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
3070 roff = rel->r_offset - 3;
3071 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3072 if (type == 0x04)
3073 {
3074 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3075 Change it into:
3076 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
3077 BFD_ASSERT (rel->r_offset >= 3);
3078 BFD_ASSERT (bfd_get_8 (input_bfd,
3079 contents + rel->r_offset - 3)
3080 == 0x8d);
3081 BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
3082 val >>= 3;
3083 }
3084 else
3085 {
3086 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3087 Change it into:
3088 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
eea6121a 3089 BFD_ASSERT (rel->r_offset + 10 <= input_section->size);
13ae64f3
JJ		 3090 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
3091 BFD_ASSERT (bfd_get_8 (input_bfd,
3092 contents + rel->r_offset + 9)
3093 == 0x90);
3094 roff = rel->r_offset - 2;
3095 }
3096 memcpy (contents + roff,
3097 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
3098 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 3099 /* If foo is used only with foo@gotntpoff(%reg) and
3100 foo@indntpoff, but not with foo@gottpoff(%reg), change
3101 subl $foo@gottpoff(%reg), %eax
3102 into:
3103 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ		 3104 if (tls_type == GOT_TLS_IE_POS)
3105 contents[roff + 6] = 0x03;
8c37241b
JJ		 3106 bfd_put_32 (output_bfd,
3107 htab->sgot->output_section->vma
3108 + htab->sgot->output_offset + off
3109 - htab->sgotplt->output_section->vma
3110 - htab->sgotplt->output_offset,
13ae64f3
JJ		 3111 contents + roff + 8);
3112 /* Skip R_386_PLT32. */
3113 rel++;
3114 continue;
3115 }
67a4f2b7
AO		 3116 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3117 {
3118 /* GDesc -> IE transition.
3119 It's originally something like:
3120 leal x@tlsdesc(%ebx), %eax
3121
3122 Change it to:
3123 movl x@gotntpoff(%ebx), %eax # before nop; nop
3124 or:
3125 movl x@gottpoff(%ebx), %eax # before negl %eax
3126
3127 Registers other than %eax may be set up here. */
3128
3129 unsigned int val, type;
3130 bfd_vma roff;
3131
3132 /* First, make sure it's a leal adding ebx to a 32-bit
3133 offset into any register, although it's probably
3134 almost always going to be eax. */
3135 roff = rel->r_offset;
3136 BFD_ASSERT (roff >= 2);
3137 type = bfd_get_8 (input_bfd, contents + roff - 2);
3138 BFD_ASSERT (type == 0x8d);
3139 val = bfd_get_8 (input_bfd, contents + roff - 1);
3140 BFD_ASSERT ((val & 0xc7) == 0x83);
3141 BFD_ASSERT (roff + 4 <= input_section->size);
3142
3143 /* Now modify the instruction as appropriate. */
3144 /* To turn a leal into a movl in the form we use it, it
3145 suffices to change the first byte from 0x8d to 0x8b.
3146 aoliva FIXME: should we decide to keep the leal, all
3147 we have to do is remove the statement below, and
3148 adjust the relaxation of R_386_TLS_DESC_CALL. */
3149 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3150
3151 if (tls_type == GOT_TLS_IE_BOTH)
3152 off += 4;
3153
3154 bfd_put_32 (output_bfd,
3155 htab->sgot->output_section->vma
3156 + htab->sgot->output_offset + off
3157 - htab->sgotplt->output_section->vma
3158 - htab->sgotplt->output_offset,
3159 contents + roff);
3160 continue;
3161 }
3162 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3163 {
3164 /* GDesc -> IE transition.
3165 It's originally:
3166 call *(%eax)
3167
3168 Change it to:
3169 nop; nop
3170 or
3171 negl %eax
3172 depending on how we transformed the TLS_GOTDESC above.
3173 */
3174
3175 unsigned int val, type;
3176 bfd_vma roff;
3177
3178 /* First, make sure it's a call *(%eax). */
3179 roff = rel->r_offset;
3180 BFD_ASSERT (roff + 2 <= input_section->size);
3181 type = bfd_get_8 (input_bfd, contents + roff);
3182 BFD_ASSERT (type == 0xff);
3183 val = bfd_get_8 (input_bfd, contents + roff + 1);
3184 BFD_ASSERT (val == 0x10);
3185
3186 /* Now modify the instruction as appropriate. */
3187 if (tls_type != GOT_TLS_IE_NEG)
3188 {
10efb593
L		 3189 /* xchg %ax,%ax */
3190 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3191 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3192 }
3193 else
3194 {
3195 /* negl %eax */
3196 bfd_put_8 (output_bfd, 0xf7, contents + roff);
3197 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
3198 }
3199
3200 continue;
3201 }
3202 else
3203 BFD_ASSERT (FALSE);
13ae64f3
JJ		 3204 break;
3205
3206 case R_386_TLS_LDM:
3207 if (! info->shared)
3208 {
3209 unsigned int val;
3210
3211 /* LD->LE transition:
3212 Ensure it is:
3213 leal foo(%reg), %eax; call ___tls_get_addr.
3214 We change it into:
3215 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
3216 BFD_ASSERT (rel->r_offset >= 2);
3217 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2)
3218 == 0x8d);
3219 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3220 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
eea6121a 3221 BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
13ae64f3
JJ		 3222 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
3223 == 0xe8);
3224 BFD_ASSERT (rel + 1 < relend);
3225 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
3226 memcpy (contents + rel->r_offset - 2,
3227 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
3228 /* Skip R_386_PLT32. */
3229 rel++;
3230 continue;
3231 }
3232
3233 if (htab->sgot == NULL)
3234 abort ();
3235
3236 off = htab->tls_ldm_got.offset;
3237 if (off & 1)
3238 off &= ~1;
3239 else
3240 {
947216bf
AM		 3241 Elf_Internal_Rela outrel;
3242 bfd_byte *loc;
13ae64f3
JJ		 3243
3244 if (htab->srelgot == NULL)
3245 abort ();
3246
3247 outrel.r_offset = (htab->sgot->output_section->vma
3248 + htab->sgot->output_offset + off);
3249
3250 bfd_put_32 (output_bfd, 0,
3251 htab->sgot->contents + off);
3252 bfd_put_32 (output_bfd, 0,
3253 htab->sgot->contents + off + 4);
3254 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
947216bf
AM		 3255 loc = htab->srelgot->contents;
3256 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
13ae64f3
JJ		 3257 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3258 htab->tls_ldm_got.offset |= 1;
3259 }
8c37241b
JJ		 3260 relocation = htab->sgot->output_section->vma
3261 + htab->sgot->output_offset + off
3262 - htab->sgotplt->output_section->vma
3263 - htab->sgotplt->output_offset;
b34976b6 3264 unresolved_reloc = FALSE;
13ae64f3
JJ		 3265 break;
3266
3267 case R_386_TLS_LDO_32:
a45bb67d 3268 if (info->shared || (input_section->flags & SEC_CODE) == 0)
13ae64f3
JJ		 3269 relocation -= dtpoff_base (info);
3270 else
3271 /* When converting LDO to LE, we must negate. */
3272 relocation = -tpoff (info, relocation);
3273 break;
3274
3275 case R_386_TLS_LE_32:
13ae64f3 3276 case R_386_TLS_LE:
37e55690
JJ		 3277 if (info->shared)
3278 {
947216bf 3279 Elf_Internal_Rela outrel;
37e55690 3280 asection *sreloc;
947216bf 3281 bfd_byte *loc;
37e55690
JJ		 3282 int indx;
3283
3284 outrel.r_offset = rel->r_offset
3285 + input_section->output_section->vma
3286 + input_section->output_offset;
3287 if (h != NULL && h->dynindx != -1)
3288 indx = h->dynindx;
3289 else
3290 indx = 0;
3291 if (r_type == R_386_TLS_LE_32)
3292 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
3293 else
3294 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3295 sreloc = elf_section_data (input_section)->sreloc;
3296 if (sreloc == NULL)
3297 abort ();
947216bf
AM		 3298 loc = sreloc->contents;
3299 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 3300 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3301 if (indx)
3302 continue;
3303 else if (r_type == R_386_TLS_LE_32)
3304 relocation = dtpoff_base (info) - relocation;
3305 else
3306 relocation -= dtpoff_base (info);
3307 }
3308 else if (r_type == R_386_TLS_LE_32)
3309 relocation = tpoff (info, relocation);
3310 else
3311 relocation = -tpoff (info, relocation);
13ae64f3
JJ		 3312 break;
3313
252b5132
RH		 3314 default:
3315 break;
3316 }
3317
239e1f3a
AM		 3318 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3319 because such sections are not SEC_ALLOC and thus ld.so will
3320 not process them. */
8c694914 3321 if (unresolved_reloc
239e1f3a 3322 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 3323 && h->def_dynamic))
6a30718d
JJ		 3324 {
3325 (*_bfd_error_handler)
843fe662 3326 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3327 input_bfd,
3328 input_section,
6a30718d 3329 (long) rel->r_offset,
843fe662 3330 howto->name,
6a30718d 3331 h->root.root.string);
b34976b6 3332 return FALSE;
6a30718d 3333 }
83be169b 3334
252b5132
RH		 3335 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3336 contents, rel->r_offset,
55fd94b0 3337 relocation, 0);
252b5132 3338
cf5c0c5b 3339 if (r != bfd_reloc_ok)
252b5132 3340 {
cf5c0c5b 3341 const char *name;
ffb2e45b 3342
cf5c0c5b
AM		 3343 if (h != NULL)
3344 name = h->root.root.string;
3345 else
3346 {
3347 name = bfd_elf_string_from_elf_section (input_bfd,
3348 symtab_hdr->sh_link,
3349 sym->st_name);
3350 if (name == NULL)
b34976b6 3351 return FALSE;
cf5c0c5b
AM		 3352 if (*name == '\0')
3353 name = bfd_section_name (input_bfd, sec);
3354 }
ffb2e45b 3355
cf5c0c5b
AM		 3356 if (r == bfd_reloc_overflow)
3357 {
cf5c0c5b 3358 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3359 (info, (h ? &h->root : NULL), name, howto->name,
3360 (bfd_vma) 0, input_bfd, input_section,
3361 rel->r_offset)))
b34976b6 3362 return FALSE;
cf5c0c5b
AM		 3363 }
3364 else
3365 {
3366 (*_bfd_error_handler)
d003868e
AM		 3367 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3368 input_bfd, input_section,
cf5c0c5b 3369 (long) rel->r_offset, name, (int) r);
b34976b6 3370 return FALSE;
cf5c0c5b 3371 }
252b5132
RH		 3372 }
3373 }
3374
b34976b6 3375 return TRUE;
252b5132
RH		 3376}
3377
3378/* Finish up dynamic symbol handling. We set the contents of various
3379 dynamic sections here. */
3380
b34976b6 3381static bfd_boolean
55fd94b0
AM		 3382elf_i386_finish_dynamic_symbol (bfd *output_bfd,
3383 struct bfd_link_info *info,
3384 struct elf_link_hash_entry *h,
3385 Elf_Internal_Sym *sym)
252b5132 3386{
6725bdbf 3387 struct elf_i386_link_hash_table *htab;
252b5132 3388
6725bdbf 3389 htab = elf_i386_hash_table (info);
252b5132
RH		 3390
3391 if (h->plt.offset != (bfd_vma) -1)
3392 {
252b5132
RH		 3393 bfd_vma plt_index;
3394 bfd_vma got_offset;
947216bf
AM		 3395 Elf_Internal_Rela rel;
3396 bfd_byte *loc;
252b5132
RH		 3397
3398 /* This symbol has an entry in the procedure linkage table. Set
3399 it up. */
3400
ffb2e45b
AM		 3401 if (h->dynindx == -1
3402 || htab->splt == NULL
3403 || htab->sgotplt == NULL
3404 || htab->srelplt == NULL)
3405 abort ();
252b5132
RH		 3406
3407 /* Get the index in the procedure linkage table which
3408 corresponds to this symbol. This is the index of this symbol
3409 in all the symbols for which we are making plt entries. The
3410 first entry in the procedure linkage table is reserved. */
3411 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3412
3413 /* Get the offset into the .got table of the entry that
3414 corresponds to this function. Each .got entry is 4 bytes.
3415 The first three are reserved. */
3416 got_offset = (plt_index + 3) * 4;
3417
3418 /* Fill in the entry in the procedure linkage table. */
3419 if (! info->shared)
3420 {
6725bdbf 3421 memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry,
252b5132
RH		 3422 PLT_ENTRY_SIZE);
3423 bfd_put_32 (output_bfd,
6725bdbf
AM		 3424 (htab->sgotplt->output_section->vma
3425 + htab->sgotplt->output_offset
252b5132 3426 + got_offset),
6725bdbf 3427 htab->splt->contents + h->plt.offset + 2);
eac338cf
PB		 3428
3429 if (htab->is_vxworks)
3430 {
3431 int s, k, reloc_index;
3432
3433 /* Create the R_386_32 relocation referencing the GOT
3434 for this PLT entry. */
3435
3436 /* S: Current slot number (zero-based). */
3437 s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3438 /* K: Number of relocations for PLTResolve. */
3439 if (info->shared)
3440 k = PLTRESOLVE_RELOCS_SHLIB;
3441 else
3442 k = PLTRESOLVE_RELOCS;
3443 /* Skip the PLTresolve relocations, and the relocations for
3444 the other PLT slots. */
3445 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
3446 loc = (htab->srelplt2->contents + reloc_index
3447 * sizeof (Elf32_External_Rel));
3448
3449 rel.r_offset = (htab->splt->output_section->vma
3450 + htab->splt->output_offset
3451 + h->plt.offset + 2),
7325306f 3452 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3453 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
3454
3455 /* Create the R_386_32 relocation referencing the beginning of
3456 the PLT for this GOT entry. */
3457 rel.r_offset = (htab->sgotplt->output_section->vma
3458 + htab->sgotplt->output_offset
3459 + got_offset);
7325306f 3460 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 3461 bfd_elf32_swap_reloc_out (output_bfd, &rel,
3462 loc + sizeof (Elf32_External_Rel));
3463 }
252b5132
RH		 3464 }
3465 else
3466 {
6725bdbf 3467 memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry,
252b5132
RH		 3468 PLT_ENTRY_SIZE);
3469 bfd_put_32 (output_bfd, got_offset,
6725bdbf 3470 htab->splt->contents + h->plt.offset + 2);
252b5132
RH		 3471 }
3472
3473 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
6725bdbf 3474 htab->splt->contents + h->plt.offset + 7);
252b5132 3475 bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
6725bdbf 3476 htab->splt->contents + h->plt.offset + 12);
252b5132
RH		 3477
3478 /* Fill in the entry in the global offset table. */
3479 bfd_put_32 (output_bfd,
6725bdbf
AM		 3480 (htab->splt->output_section->vma
3481 + htab->splt->output_offset
252b5132
RH		 3482 + h->plt.offset
3483 + 6),
6725bdbf 3484 htab->sgotplt->contents + got_offset);
252b5132
RH		 3485
3486 /* Fill in the entry in the .rel.plt section. */
6725bdbf
AM		 3487 rel.r_offset = (htab->sgotplt->output_section->vma
3488 + htab->sgotplt->output_offset
252b5132
RH		 3489 + got_offset);
3490 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
947216bf 3491 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 3492 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 3493
f5385ebf 3494 if (!h->def_regular)
252b5132
RH		 3495 {
3496 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 3497 the .plt section. Leave the value if there were any
3498 relocations where pointer equality matters (this is a clue
51b64d56
AM		 3499 for the dynamic linker, to make function pointer
3500 comparisons work between an application and shared
c6585bbb
JJ		 3501 library), otherwise set it to zero. If a function is only
3502 called from a binary, there is no need to slow down
3503 shared libraries because of that. */
252b5132 3504 sym->st_shndx = SHN_UNDEF;
f5385ebf 3505 if (!h->pointer_equality_needed)
c6585bbb 3506 sym->st_value = 0;
252b5132
RH		 3507 }
3508 }
3509
13ae64f3 3510 if (h->got.offset != (bfd_vma) -1
67a4f2b7 3511 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 3512 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 3513 {
947216bf
AM		 3514 Elf_Internal_Rela rel;
3515 bfd_byte *loc;
252b5132
RH		 3516
3517 /* This symbol has an entry in the global offset table. Set it
3518 up. */
3519
ffb2e45b
AM		 3520 if (htab->sgot == NULL || htab->srelgot == NULL)
3521 abort ();
252b5132 3522
6725bdbf
AM		 3523 rel.r_offset = (htab->sgot->output_section->vma
3524 + htab->sgot->output_offset
dc810e39 3525 + (h->got.offset & ~(bfd_vma) 1));
252b5132 3526
dd5724d5
AM		 3527 /* If this is a static link, or it is a -Bsymbolic link and the
3528 symbol is defined locally or was forced to be local because
3529 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 3530 The entry in the global offset table will already have been
3531 initialized in the relocate_section function. */
6725bdbf 3532 if (info->shared
586119b3 3533 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 3534 {
6725bdbf 3535 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 3536 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3537 }
252b5132
RH		 3538 else
3539 {
dd5724d5 3540 BFD_ASSERT((h->got.offset & 1) == 0);
6725bdbf
AM		 3541 bfd_put_32 (output_bfd, (bfd_vma) 0,
3542 htab->sgot->contents + h->got.offset);
252b5132
RH		 3543 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
3544 }
3545
947216bf
AM		 3546 loc = htab->srelgot->contents;
3547 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3548 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 3549 }
3550
f5385ebf 3551 if (h->needs_copy)
252b5132 3552 {
947216bf
AM		 3553 Elf_Internal_Rela rel;
3554 bfd_byte *loc;
252b5132
RH		 3555
3556 /* This symbol needs a copy reloc. Set it up. */
3557
ffb2e45b
AM		 3558 if (h->dynindx == -1
3559 || (h->root.type != bfd_link_hash_defined
3560 && h->root.type != bfd_link_hash_defweak)
3561 || htab->srelbss == NULL)
3562 abort ();
252b5132
RH		 3563
3564 rel.r_offset = (h->root.u.def.value
3565 + h->root.u.def.section->output_section->vma
3566 + h->root.u.def.section->output_offset);
3567 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
947216bf
AM		 3568 loc = htab->srelbss->contents;
3569 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3570 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 3571 }
3572
eac338cf
PB		 3573 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.
3574 On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it
3575 is relative to the ".got" section. */
252b5132 3576 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1 3577 || (!htab->is_vxworks && h == htab->elf.hgot))
252b5132
RH		 3578 sym->st_shndx = SHN_ABS;
3579
b34976b6 3580 return TRUE;
252b5132
RH		 3581}
3582
38701953
AM		 3583/* Used to decide how to sort relocs in an optimal manner for the
3584 dynamic linker, before writing them out. */
3585
3586static enum elf_reloc_type_class
55fd94b0 3587elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
38701953 3588{
55fd94b0 3589 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 3590 {
3591 case R_386_RELATIVE:
3592 return reloc_class_relative;
3593 case R_386_JUMP_SLOT:
3594 return reloc_class_plt;
3595 case R_386_COPY:
3596 return reloc_class_copy;
3597 default:
3598 return reloc_class_normal;
3599 }
3600}
3601
252b5132
RH		 3602/* Finish up the dynamic sections. */
3603
b34976b6 3604static bfd_boolean
55fd94b0
AM		 3605elf_i386_finish_dynamic_sections (bfd *output_bfd,
3606 struct bfd_link_info *info)
252b5132 3607{
6725bdbf 3608 struct elf_i386_link_hash_table *htab;
252b5132 3609 bfd *dynobj;
252b5132
RH		 3610 asection *sdyn;
3611
6725bdbf 3612 htab = elf_i386_hash_table (info);
ebe50bae 3613 dynobj = htab->elf.dynobj;
252b5132
RH		 3614 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3615
ebe50bae 3616 if (htab->elf.dynamic_sections_created)
252b5132 3617 {
252b5132
RH		 3618 Elf32_External_Dyn *dyncon, *dynconend;
3619
ffb2e45b
AM		 3620 if (sdyn == NULL || htab->sgot == NULL)
3621 abort ();
252b5132
RH		 3622
3623 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3624 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 3625 for (; dyncon < dynconend; dyncon++)
3626 {
3627 Elf_Internal_Dyn dyn;
51b64d56 3628 asection *s;
252b5132
RH		 3629
3630 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3631
3632 switch (dyn.d_tag)
3633 {
3634 default:
0ac8d2ca 3635 continue;
252b5132
RH		 3636
3637 case DT_PLTGOT:
8c37241b
JJ		 3638 s = htab->sgotplt;
3639 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 3640 break;
3641
252b5132 3642 case DT_JMPREL:
6348e046
AM		 3643 s = htab->srelplt;
3644 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 3645 break;
3646
3647 case DT_PLTRELSZ:
6348e046 3648 s = htab->srelplt;
eea6121a 3649 dyn.d_un.d_val = s->size;
252b5132
RH		 3650 break;
3651
3652 case DT_RELSZ:
3653 /* My reading of the SVR4 ABI indicates that the
3654 procedure linkage table relocs (DT_JMPREL) should be
3655 included in the overall relocs (DT_REL). This is
3656 what Solaris does. However, UnixWare can not handle
3657 that case. Therefore, we override the DT_RELSZ entry
6348e046
AM		 3658 here to make it not include the JMPREL relocs. */
3659 s = htab->srelplt;
3660 if (s == NULL)
3661 continue;
eea6121a 3662 dyn.d_un.d_val -= s->size;
6348e046
AM		 3663 break;
3664
3665 case DT_REL:
3666 /* We may not be using the standard ELF linker script.
3667 If .rel.plt is the first .rel section, we adjust
3668 DT_REL to not include it. */
3669 s = htab->srelplt;
3670 if (s == NULL)
3671 continue;
3672 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
3673 continue;
eea6121a 3674 dyn.d_un.d_ptr += s->size;
252b5132
RH		 3675 break;
3676 }
0ac8d2ca
AM		 3677
3678 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 3679 }
3680
3681 /* Fill in the first entry in the procedure linkage table. */
eea6121a 3682 if (htab->splt && htab->splt->size > 0)
252b5132
RH		 3683 {
3684 if (info->shared)
eac338cf
PB		 3685 {
3686 memcpy (htab->splt->contents, elf_i386_pic_plt0_entry,
3687 sizeof (elf_i386_pic_plt0_entry));
3688 memset (htab->splt->contents + sizeof (elf_i386_pic_plt0_entry),
3689 htab->plt0_pad_byte,
3690 PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry));
3691 }
252b5132
RH		 3692 else
3693 {
eac338cf
PB		 3694 memcpy (htab->splt->contents, elf_i386_plt0_entry,
3695 sizeof(elf_i386_plt0_entry));
3696 memset (htab->splt->contents + sizeof (elf_i386_plt0_entry),
3697 htab->plt0_pad_byte,
3698 PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry));
252b5132 3699 bfd_put_32 (output_bfd,
6725bdbf
AM		 3700 (htab->sgotplt->output_section->vma
3701 + htab->sgotplt->output_offset
3702 + 4),
3703 htab->splt->contents + 2);
252b5132 3704 bfd_put_32 (output_bfd,
6725bdbf
AM		 3705 (htab->sgotplt->output_section->vma
3706 + htab->sgotplt->output_offset
3707 + 8),
3708 htab->splt->contents + 8);
eac338cf
PB		 3709
3710 if (htab->is_vxworks)
3711 {
3712 Elf_Internal_Rela rel;
7325306f 3713
eac338cf
PB		 3714 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
3715 On IA32 we use REL relocations so the addend goes in
3716 the PLT directly. */
3717 rel.r_offset = (htab->splt->output_section->vma
3718 + htab->splt->output_offset
3719 + 2);
7325306f 3720 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3721 bfd_elf32_swap_reloc_out (output_bfd, &rel,
3722 htab->srelplt2->contents);
3723 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
3724 rel.r_offset = (htab->splt->output_section->vma
3725 + htab->splt->output_offset
3726 + 8);
7325306f 3727 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3728 bfd_elf32_swap_reloc_out (output_bfd, &rel,
3729 htab->srelplt2->contents +
3730 sizeof (Elf32_External_Rel));
3731 }
252b5132
RH		 3732 }
3733
3734 /* UnixWare sets the entsize of .plt to 4, although that doesn't
3735 really seem like the right value. */
6725bdbf
AM		 3736 elf_section_data (htab->splt->output_section)
3737 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 3738
3739 /* Correct the .rel.plt.unloaded relocations. */
3740 if (htab->is_vxworks && !info->shared)
3741 {
3742 int num_plts = (htab->splt->size / PLT_ENTRY_SIZE) - 1;
4c9b0de6 3743 unsigned char *p;
eac338cf
PB		 3744
3745 p = htab->srelplt2->contents;
3746 if (info->shared)
3747 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
3748 else
3749 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
3750
3751 for (; num_plts; num_plts--)
3752 {
3753 Elf_Internal_Rela rel;
3754 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 3755 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3756 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
3757 p += sizeof (Elf32_External_Rel);
3758
3759 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 3760 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 3761 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
3762 p += sizeof (Elf32_External_Rel);
3763 }
3764 }
252b5132
RH		 3765 }
3766 }
3767
12d0ee4a 3768 if (htab->sgotplt)
252b5132 3769 {
12d0ee4a 3770 /* Fill in the first three entries in the global offset table. */
eea6121a 3771 if (htab->sgotplt->size > 0)
12d0ee4a
AM		 3772 {
3773 bfd_put_32 (output_bfd,
55fd94b0 3774 (sdyn == NULL ? 0
12d0ee4a
AM		 3775 : sdyn->output_section->vma + sdyn->output_offset),
3776 htab->sgotplt->contents);
55fd94b0
AM		 3777 bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 4);
3778 bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 8);
12d0ee4a 3779 }
252b5132 3780
12d0ee4a
AM		 3781 elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4;
3782 }
8c37241b 3783
eea6121a 3784 if (htab->sgot && htab->sgot->size > 0)
8c37241b
JJ		 3785 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
3786
b34976b6 3787 return TRUE;
252b5132
RH		 3788}
3789
4c45e5c9
JJ		 3790/* Return address for Ith PLT stub in section PLT, for relocation REL
3791 or (bfd_vma) -1 if it should not be included. */
3792
3793static bfd_vma
3794elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
3795 const arelent *rel ATTRIBUTE_UNUSED)
3796{
3797 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
3798}
3799
fdc90cb4
JJ		 3800/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
3801
3802static bfd_boolean
3803elf_i386_hash_symbol (struct elf_link_hash_entry *h)
3804{
3805 if (h->plt.offset != (bfd_vma) -1
3806 && !h->def_regular
3807 && !h->pointer_equality_needed)
3808 return FALSE;
3809
3810 return _bfd_elf_hash_symbol (h);
3811}
4c45e5c9 3812
252b5132
RH		 3813#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
3814#define TARGET_LITTLE_NAME "elf32-i386"
3815#define ELF_ARCH bfd_arch_i386
3816#define ELF_MACHINE_CODE EM_386
3817#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 3818
3819#define elf_backend_can_gc_sections 1
51b64d56 3820#define elf_backend_can_refcount 1
252b5132
RH		 3821#define elf_backend_want_got_plt 1
3822#define elf_backend_plt_readonly 1
3823#define elf_backend_want_plt_sym 0
3824#define elf_backend_got_header_size 12
252b5132 3825
8c29f035
AM		 3826/* Support RELA for objdump of prelink objects. */
3827#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 3828#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
3829
13ae64f3 3830#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 3831
dd5724d5
AM		 3832#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
3833#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
3834#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
157090f7 3835#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM		 3836
3837#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
3838#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 3839#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 3840#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 3841#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 3842#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
3843#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
3844#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
3845#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 3846#define elf_backend_grok_prstatus elf_i386_grok_prstatus
3847#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 3848#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 3849#define elf_backend_relocate_section elf_i386_relocate_section
3850#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 3851#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM		 3852#define elf_backend_omit_section_dynsym \
3853 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 3854#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 3855#define elf_backend_hash_symbol elf_i386_hash_symbol
dd5724d5 3856
252b5132 3857#include "elf32-target.h"
2bc3c89a
AM		 3858
3859/* FreeBSD support. */
3860
3861#undef TARGET_LITTLE_SYM
3862#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
3863#undef TARGET_LITTLE_NAME
3864#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L		 3865#undef ELF_OSABI
3866#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM		 3867
3868/* The kernel recognizes executables as valid only if they carry a
3869 "FreeBSD" label in the ELF header. So we put this label on all
3870 executables and (for simplicity) also all other object files. */
3871
2bc3c89a 3872static void
55fd94b0
AM		 3873elf_i386_post_process_headers (bfd *abfd,
3874 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2bc3c89a
AM		 3875{
3876 Elf_Internal_Ehdr *i_ehdrp;
3877
3878 i_ehdrp = elf_elfheader (abfd);
3879
3880 /* Put an ABI label supported by FreeBSD >= 4.1. */
d1036acb 3881 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
2bc3c89a
AM		 3882#ifdef OLD_FREEBSD_ABI_LABEL
3883 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
3884 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 3885#endif
2bc3c89a
AM		 3886}
3887
3888#undef elf_backend_post_process_headers
571fe01f
NC		 3889#define elf_backend_post_process_headers elf_i386_post_process_headers
3890#undef elf32_bed
3891#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a
AM		 3892
3893#include "elf32-target.h"
eac338cf
PB		 3894
3895/* VxWorks support. */
3896
3897#undef TARGET_LITTLE_SYM
3898#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
3899#undef TARGET_LITTLE_NAME
3900#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 3901#undef ELF_OSABI
eac338cf
PB		 3902
3903/* Like elf_i386_link_hash_table_create but with tweaks for VxWorks. */
3904
3905static struct bfd_link_hash_table *
3906elf_i386_vxworks_link_hash_table_create (bfd *abfd)
3907{
3908 struct bfd_link_hash_table *ret;
3909 struct elf_i386_link_hash_table *htab;
3910
3911 ret = elf_i386_link_hash_table_create (abfd);
3912 if (ret)
3913 {
3914 htab = (struct elf_i386_link_hash_table *) ret;
3915 htab->is_vxworks = 1;
3916 htab->plt0_pad_byte = 0x90;
3917 }
3918
3919 return ret;
3920}
3921
3922
eac338cf
PB		 3923#undef elf_backend_post_process_headers
3924#undef bfd_elf32_bfd_link_hash_table_create
3925#define bfd_elf32_bfd_link_hash_table_create \
3926 elf_i386_vxworks_link_hash_table_create
3927#undef elf_backend_add_symbol_hook
3928#define elf_backend_add_symbol_hook \
3929 elf_vxworks_add_symbol_hook
3930#undef elf_backend_link_output_symbol_hook
3931#define elf_backend_link_output_symbol_hook \
9c72ff84 3932 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 3933#undef elf_backend_emit_relocs
3934#define elf_backend_emit_relocs elf_vxworks_emit_relocs
3935#undef elf_backend_final_write_processing
3936#define elf_backend_final_write_processing \
3937 elf_vxworks_final_write_processing
3938
3939/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
3940 define it. */
3941#undef elf_backend_want_plt_sym
3942#define elf_backend_want_plt_sym 1
3943
3944#undef elf32_bed
3945#define elf32_bed elf32_i386_vxworks_bed
3946
3947#include "elf32-target.h"
GDB Binutils - Deliverables
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