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[deliverable/binutils-gdb.git] / bfd / elf32-i386.c
CommitLineData
252b5132 1/* Intel 80386/80486-specific support for 32-bit ELF
b2a8e766 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
67a4f2b7 3 2003, 2004, 2005, 2006 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
RH		 20
21#include "bfd.h"
22#include "sysdep.h"
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
252b5132 333static void
55fd94b0
AM		 334elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
335 arelent *cache_ptr,
336 Elf_Internal_Rela *dst)
252b5132 337{
dc47f327
AM		 338 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
339 unsigned int indx;
340
341 if ((indx = r_type) >= R_386_standard
342 && ((indx = r_type - R_386_ext_offset) - R_386_standard
343 >= R_386_ext - R_386_standard)
13ae64f3
JJ		 344 && ((indx = r_type - R_386_tls_offset) - R_386_ext
345 >= R_386_tls - R_386_ext)
346 && ((indx = r_type - R_386_vt_offset) - R_386_tls
347 >= R_386_vt - R_386_tls))
252b5132 348 {
d003868e
AM		 349 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
350 abfd, (int) r_type);
55fd94b0 351 indx = R_386_NONE;
252b5132 352 }
dc47f327 353 cache_ptr->howto = &elf_howto_table[indx];
252b5132
RH		 354}
355
356/* Return whether a symbol name implies a local label. The UnixWare
357 2.1 cc generates temporary symbols that start with .X, so we
358 recognize them here. FIXME: do other SVR4 compilers also use .X?.
359 If so, we should move the .X recognition into
360 _bfd_elf_is_local_label_name. */
361
b34976b6 362static bfd_boolean
55fd94b0 363elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH		 364{
365 if (name[0] == '.' && name[1] == 'X')
b34976b6 366 return TRUE;
252b5132
RH		 367
368 return _bfd_elf_is_local_label_name (abfd, name);
369}
370\f
38701953 371/* Support for core dump NOTE sections. */
61adc1a4 372
b34976b6 373static bfd_boolean
55fd94b0 374elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM		 375{
376 int offset;
eea6121a 377 size_t size;
38701953 378
61adc1a4 379 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 380 {
61adc1a4
NC		 381 int pr_version = bfd_get_32 (abfd, note->descdata);
382
383 if (pr_version != 1)
384 return FALSE;
385
386 /* pr_cursig */
387 elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
388
389 /* pr_pid */
390 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
391
392 /* pr_reg */
393 offset = 28;
eea6121a 394 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC		 395 }
396 else
397 {
398 switch (note->descsz)
399 {
400 default:
401 return FALSE;
38701953 402
61adc1a4
NC		 403 case 144: /* Linux/i386 */
404 /* pr_cursig */
405 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 406
61adc1a4
NC		 407 /* pr_pid */
408 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
38701953 409
61adc1a4
NC		 410 /* pr_reg */
411 offset = 72;
eea6121a 412 size = 68;
38701953 413
61adc1a4
NC		 414 break;
415 }
38701953
AM		 416 }
417
418 /* Make a ".reg/999" section. */
419 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 420 size, note->descpos + offset);
38701953
AM		 421}
422
b34976b6 423static bfd_boolean
55fd94b0 424elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 425{
61adc1a4 426 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 427 {
61adc1a4
NC		 428 int pr_version = bfd_get_32 (abfd, note->descdata);
429
430 if (pr_version != 1)
b34976b6 431 return FALSE;
38701953 432
61adc1a4
NC		 433 elf_tdata (abfd)->core_program
434 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
435 elf_tdata (abfd)->core_command
436 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
437 }
438 else
439 {
440 switch (note->descsz)
441 {
442 default:
443 return FALSE;
444
445 case 124: /* Linux/i386 elf_prpsinfo. */
446 elf_tdata (abfd)->core_program
447 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
448 elf_tdata (abfd)->core_command
449 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
450 }
38701953
AM		 451 }
452
453 /* Note that for some reason, a spurious space is tacked
454 onto the end of the args in some (at least one anyway)
455 implementations, so strip it off if it exists. */
38701953
AM		 456 {
457 char *command = elf_tdata (abfd)->core_command;
458 int n = strlen (command);
459
460 if (0 < n && command[n - 1] == ' ')
461 command[n - 1] = '\0';
462 }
463
b34976b6 464 return TRUE;
38701953
AM		 465}
466\f
467/* Functions for the i386 ELF linker.
468
469 In order to gain some understanding of code in this file without
470 knowing all the intricate details of the linker, note the
471 following:
472
473 Functions named elf_i386_* are called by external routines, other
474 functions are only called locally. elf_i386_* functions appear
475 in this file more or less in the order in which they are called
476 from external routines. eg. elf_i386_check_relocs is called
477 early in the link process, elf_i386_finish_dynamic_sections is
478 one of the last functions. */
479
252b5132
RH		 480
481/* The name of the dynamic interpreter. This is put in the .interp
482 section. */
483
484#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
485
a23b6845
AM		 486/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
487 copying dynamic variables from a shared lib into an app's dynbss
488 section, and instead use a dynamic relocation to point into the
489 shared lib. */
490#define ELIMINATE_COPY_RELOCS 1
491
252b5132
RH		 492/* The size in bytes of an entry in the procedure linkage table. */
493
494#define PLT_ENTRY_SIZE 16
495
496/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB		 497 this. See the SVR4 ABI i386 supplement to see how this works.
498 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 499
eac338cf 500static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH		 501{
502 0xff, 0x35, /* pushl contents of address */
503 0, 0, 0, 0, /* replaced with address of .got + 4. */
504 0xff, 0x25, /* jmp indirect */
eac338cf 505 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH		 506};
507
508/* Subsequent entries in an absolute procedure linkage table look like
509 this. */
510
511static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
512{
513 0xff, 0x25, /* jmp indirect */
514 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
515 0x68, /* pushl immediate */
516 0, 0, 0, 0, /* replaced with offset into relocation table. */
517 0xe9, /* jmp relative */
518 0, 0, 0, 0 /* replaced with offset to start of .plt. */
519};
520
eac338cf
PB		 521/* The first entry in a PIC procedure linkage table look like this.
522 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 523
eac338cf 524static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH		 525{
526 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 527 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH		 528};
529
530/* Subsequent entries in a PIC procedure linkage table look like this. */
531
532static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
533{
534 0xff, 0xa3, /* jmp *offset(%ebx) */
535 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
536 0x68, /* pushl immediate */
537 0, 0, 0, 0, /* replaced with offset into relocation table. */
538 0xe9, /* jmp relative */
539 0, 0, 0, 0 /* replaced with offset to start of .plt. */
540};
541
eac338cf
PB		 542/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
543 for the PLTResolve stub and then for each PLT entry. */
544#define PLTRESOLVE_RELOCS_SHLIB 0
545#define PLTRESOLVE_RELOCS 2
546#define PLT_NON_JUMP_SLOT_RELOCS 2
547
252b5132 548/* The i386 linker needs to keep track of the number of relocs that it
ffb2e45b
AM		 549 decides to copy as dynamic relocs in check_relocs for each symbol.
550 This is so that it can later discard them if they are found to be
551 unnecessary. We store the information in a field extending the
552 regular ELF linker hash table. */
252b5132 553
ffb2e45b 554struct elf_i386_dyn_relocs
252b5132 555{
ffb2e45b 556 struct elf_i386_dyn_relocs *next;
0c715baa
AM		 557
558 /* The input section of the reloc. */
559 asection *sec;
560
561 /* Total number of relocs copied for the input section. */
252b5132 562 bfd_size_type count;
0c715baa
AM		 563
564 /* Number of pc-relative relocs copied for the input section. */
565 bfd_size_type pc_count;
252b5132
RH		 566};
567
568/* i386 ELF linker hash entry. */
569
570struct elf_i386_link_hash_entry
571{
ebe50bae 572 struct elf_link_hash_entry elf;
252b5132 573
0c715baa 574 /* Track dynamic relocs copied for this symbol. */
ffb2e45b 575 struct elf_i386_dyn_relocs *dyn_relocs;
13ae64f3 576
37e55690
JJ		 577#define GOT_UNKNOWN 0
578#define GOT_NORMAL 1
579#define GOT_TLS_GD 2
580#define GOT_TLS_IE 4
581#define GOT_TLS_IE_POS 5
582#define GOT_TLS_IE_NEG 6
583#define GOT_TLS_IE_BOTH 7
67a4f2b7 584#define GOT_TLS_GDESC 8
cb878726
L		 585#define GOT_TLS_MASK 0x0f
586#define GOT_TLS_IE_IE 0x10
587#define GOT_TLS_IE_GD 0x20
588#define GOT_TLS_IE_MASK 0x30
67a4f2b7
AO		 589#define GOT_TLS_GD_BOTH_P(type) \
590 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
591#define GOT_TLS_GD_P(type) \
592 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
593#define GOT_TLS_GDESC_P(type) \
594 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
595#define GOT_TLS_GD_ANY_P(type) \
596 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 597 unsigned char tls_type;
67a4f2b7
AO		 598
599 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
600 starting at the end of the jump table. */
601 bfd_vma tlsdesc_got;
13ae64f3
JJ		 602};
603
604#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
605
606struct elf_i386_obj_tdata
607{
608 struct elf_obj_tdata root;
609
610 /* tls_type for each local got entry. */
611 char *local_got_tls_type;
67a4f2b7
AO		 612
613 /* GOTPLT entries for TLS descriptors. */
614 bfd_vma *local_tlsdesc_gotent;
252b5132
RH		 615};
616
13ae64f3
JJ		 617#define elf_i386_tdata(abfd) \
618 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
619
620#define elf_i386_local_got_tls_type(abfd) \
621 (elf_i386_tdata (abfd)->local_got_tls_type)
622
67a4f2b7
AO		 623#define elf_i386_local_tlsdesc_gotent(abfd) \
624 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
625
b34976b6 626static bfd_boolean
55fd94b0 627elf_i386_mkobject (bfd *abfd)
13ae64f3
JJ		 628{
629 bfd_size_type amt = sizeof (struct elf_i386_obj_tdata);
630 abfd->tdata.any = bfd_zalloc (abfd, amt);
631 if (abfd->tdata.any == NULL)
b34976b6
AM		 632 return FALSE;
633 return TRUE;
13ae64f3 634}
cedb70c5 635
252b5132
RH		 636/* i386 ELF linker hash table. */
637
638struct elf_i386_link_hash_table
639{
ebe50bae 640 struct elf_link_hash_table elf;
252b5132 641
6725bdbf
AM		 642 /* Short-cuts to get to dynamic linker sections. */
643 asection *sgot;
644 asection *sgotplt;
645 asection *srelgot;
646 asection *splt;
647 asection *srelplt;
648 asection *sdynbss;
649 asection *srelbss;
9635fe29 650
eac338cf
PB		 651 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
652 asection *srelplt2;
653
eac338cf
PB		 654 /* True if the target system is VxWorks. */
655 int is_vxworks;
ec338859 656
eac338cf
PB		 657 /* Value used to fill the last word of the first plt entry. */
658 bfd_byte plt0_pad_byte;
9635fe29 659
5ae0bfb6
RS		 660 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
661 bfd_vma next_tls_desc_index;
662
13ae64f3
JJ		 663 union {
664 bfd_signed_vma refcount;
665 bfd_vma offset;
666 } tls_ldm_got;
667
67a4f2b7
AO		 668 /* The amount of space used by the reserved portion of the sgotplt
669 section, plus whatever space is used by the jump slots. */
670 bfd_vma sgotplt_jump_table_size;
671
ec338859
AM		 672 /* Small local sym to section mapping cache. */
673 struct sym_sec_cache sym_sec;
6725bdbf 674};
252b5132
RH		 675
676/* Get the i386 ELF linker hash table from a link_info structure. */
677
678#define elf_i386_hash_table(p) \
679 ((struct elf_i386_link_hash_table *) ((p)->hash))
680
67a4f2b7 681#define elf_i386_compute_jump_table_size(htab) \
5ae0bfb6 682 ((htab)->next_tls_desc_index * 4)
67a4f2b7 683
252b5132
RH		 684/* Create an entry in an i386 ELF linker hash table. */
685
686static struct bfd_hash_entry *
55fd94b0
AM		 687link_hash_newfunc (struct bfd_hash_entry *entry,
688 struct bfd_hash_table *table,
689 const char *string)
252b5132 690{
252b5132
RH		 691 /* Allocate the structure if it has not already been allocated by a
692 subclass. */
ebe50bae
AM		 693 if (entry == NULL)
694 {
695 entry = bfd_hash_allocate (table,
696 sizeof (struct elf_i386_link_hash_entry));
697 if (entry == NULL)
698 return entry;
699 }
252b5132
RH		 700
701 /* Call the allocation method of the superclass. */
ebe50bae
AM		 702 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
703 if (entry != NULL)
252b5132 704 {
ebe50bae
AM		 705 struct elf_i386_link_hash_entry *eh;
706
707 eh = (struct elf_i386_link_hash_entry *) entry;
708 eh->dyn_relocs = NULL;
13ae64f3 709 eh->tls_type = GOT_UNKNOWN;
67a4f2b7 710 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH		 711 }
712
ebe50bae 713 return entry;
252b5132
RH		 714}
715
716/* Create an i386 ELF linker hash table. */
717
718static struct bfd_link_hash_table *
55fd94b0 719elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH		 720{
721 struct elf_i386_link_hash_table *ret;
dc810e39 722 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 723
55fd94b0 724 ret = bfd_malloc (amt);
ebe50bae 725 if (ret == NULL)
252b5132
RH		 726 return NULL;
727
66eb6687
AM		 728 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
729 sizeof (struct elf_i386_link_hash_entry)))
252b5132 730 {
e2d34d7d 731 free (ret);
252b5132
RH		 732 return NULL;
733 }
734
6725bdbf
AM		 735 ret->sgot = NULL;
736 ret->sgotplt = NULL;
737 ret->srelgot = NULL;
738 ret->splt = NULL;
739 ret->srelplt = NULL;
740 ret->sdynbss = NULL;
741 ret->srelbss = NULL;
7a624474 742 ret->tls_ldm_got.refcount = 0;
5ae0bfb6 743 ret->next_tls_desc_index = 0;
67a4f2b7 744 ret->sgotplt_jump_table_size = 0;
ec338859 745 ret->sym_sec.abfd = NULL;
eac338cf
PB		 746 ret->is_vxworks = 0;
747 ret->srelplt2 = NULL;
eac338cf 748 ret->plt0_pad_byte = 0;
6725bdbf 749
ebe50bae 750 return &ret->elf.root;
252b5132
RH		 751}
752
6725bdbf
AM		 753/* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up
754 shortcuts to them in our hash table. */
755
b34976b6 756static bfd_boolean
55fd94b0 757create_got_section (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 758{
759 struct elf_i386_link_hash_table *htab;
760
761 if (! _bfd_elf_create_got_section (dynobj, info))
b34976b6 762 return FALSE;
6725bdbf
AM		 763
764 htab = elf_i386_hash_table (info);
765 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
766 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
767 if (!htab->sgot || !htab->sgotplt)
768 abort ();
769
3496cb2a
L		 770 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rel.got",
771 (SEC_ALLOC | SEC_LOAD
772 | SEC_HAS_CONTENTS
773 | SEC_IN_MEMORY
774 | SEC_LINKER_CREATED
775 | SEC_READONLY));
6725bdbf 776 if (htab->srelgot == NULL
6725bdbf 777 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
b34976b6
AM		 778 return FALSE;
779 return TRUE;
6725bdbf
AM		 780}
781
782/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
783 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
784 hash table. */
785
b34976b6 786static bfd_boolean
55fd94b0 787elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM		 788{
789 struct elf_i386_link_hash_table *htab;
790
791 htab = elf_i386_hash_table (info);
792 if (!htab->sgot && !create_got_section (dynobj, info))
b34976b6 793 return FALSE;
6725bdbf
AM		 794
795 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 796 return FALSE;
6725bdbf
AM		 797
798 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
799 htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt");
800 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
801 if (!info->shared)
802 htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
803
804 if (!htab->splt || !htab->srelplt || !htab->sdynbss
805 || (!info->shared && !htab->srelbss))
806 abort ();
807
711de32c
RS		 808 if (htab->is_vxworks
809 && !elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
810 return FALSE;
eac338cf 811
b34976b6 812 return TRUE;
6725bdbf
AM		 813}
814
ebe50bae
AM		 815/* Copy the extra info we tack onto an elf_link_hash_entry. */
816
51b64d56 817static void
fcfa13d2 818elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM		 819 struct elf_link_hash_entry *dir,
820 struct elf_link_hash_entry *ind)
ebe50bae
AM		 821{
822 struct elf_i386_link_hash_entry *edir, *eind;
823
824 edir = (struct elf_i386_link_hash_entry *) dir;
825 eind = (struct elf_i386_link_hash_entry *) ind;
826
bbd7ec4a 827 if (eind->dyn_relocs != NULL)
ebe50bae 828 {
bbd7ec4a
AM		 829 if (edir->dyn_relocs != NULL)
830 {
831 struct elf_i386_dyn_relocs **pp;
832 struct elf_i386_dyn_relocs *p;
833
fcfa13d2 834 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 835 list. Merge any entries against the same section. */
836 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
837 {
838 struct elf_i386_dyn_relocs *q;
839
840 for (q = edir->dyn_relocs; q != NULL; q = q->next)
841 if (q->sec == p->sec)
842 {
843 q->pc_count += p->pc_count;
844 q->count += p->count;
845 *pp = p->next;
846 break;
847 }
848 if (q == NULL)
849 pp = &p->next;
850 }
851 *pp = edir->dyn_relocs;
852 }
853
ebe50bae
AM		 854 edir->dyn_relocs = eind->dyn_relocs;
855 eind->dyn_relocs = NULL;
856 }
ebe50bae 857
cd67d266
JJ		 858 if (ind->root.type == bfd_link_hash_indirect
859 && dir->got.refcount <= 0)
860 {
861 edir->tls_type = eind->tls_type;
862 eind->tls_type = GOT_UNKNOWN;
863 }
81848ca0
AM		 864
865 if (ELIMINATE_COPY_RELOCS
866 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 867 && dir->dynamic_adjusted)
868 {
869 /* If called to transfer flags for a weakdef during processing
870 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
871 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
872 dir->ref_dynamic |= ind->ref_dynamic;
873 dir->ref_regular |= ind->ref_regular;
874 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
875 dir->needs_plt |= ind->needs_plt;
876 dir->pointer_equality_needed |= ind->pointer_equality_needed;
877 }
81848ca0 878 else
fcfa13d2 879 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
ebe50bae
AM		 880}
881
13ae64f3 882static int
55fd94b0 883elf_i386_tls_transition (struct bfd_link_info *info, int r_type, int is_local)
13ae64f3
JJ		 884{
885 if (info->shared)
886 return r_type;
887
888 switch (r_type)
889 {
890 case R_386_TLS_GD:
67a4f2b7
AO		 891 case R_386_TLS_GOTDESC:
892 case R_386_TLS_DESC_CALL:
13ae64f3
JJ		 893 case R_386_TLS_IE_32:
894 if (is_local)
895 return R_386_TLS_LE_32;
896 return R_386_TLS_IE_32;
37e55690
JJ		 897 case R_386_TLS_IE:
898 case R_386_TLS_GOTIE:
899 if (is_local)
900 return R_386_TLS_LE_32;
901 return r_type;
13ae64f3
JJ		 902 case R_386_TLS_LDM:
903 return R_386_TLS_LE_32;
904 }
905
906 return r_type;
907}
908
252b5132 909/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM		 910 calculate needed space in the global offset table, procedure linkage
911 table, and dynamic reloc sections. */
252b5132 912
b34976b6 913static bfd_boolean
55fd94b0
AM		 914elf_i386_check_relocs (bfd *abfd,
915 struct bfd_link_info *info,
916 asection *sec,
917 const Elf_Internal_Rela *relocs)
252b5132 918{
6725bdbf 919 struct elf_i386_link_hash_table *htab;
252b5132
RH		 920 Elf_Internal_Shdr *symtab_hdr;
921 struct elf_link_hash_entry **sym_hashes;
252b5132
RH		 922 const Elf_Internal_Rela *rel;
923 const Elf_Internal_Rela *rel_end;
252b5132
RH		 924 asection *sreloc;
925
1049f94e 926 if (info->relocatable)
b34976b6 927 return TRUE;
252b5132 928
6725bdbf 929 htab = elf_i386_hash_table (info);
252b5132
RH		 930 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
931 sym_hashes = elf_sym_hashes (abfd);
252b5132 932
252b5132
RH		 933 sreloc = NULL;
934
935 rel_end = relocs + sec->reloc_count;
936 for (rel = relocs; rel < rel_end; rel++)
937 {
13ae64f3 938 unsigned int r_type;
252b5132
RH		 939 unsigned long r_symndx;
940 struct elf_link_hash_entry *h;
941
942 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 943 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 944
d9bc7a44 945 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 946 {
d003868e
AM		 947 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
948 abfd,
8f615d07 949 r_symndx);
b34976b6 950 return FALSE;
f5f31454
L		 951 }
952
252b5132
RH		 953 if (r_symndx < symtab_hdr->sh_info)
954 h = NULL;
955 else
71cb9464
L		 956 {
957 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
958 while (h->root.type == bfd_link_hash_indirect
959 || h->root.type == bfd_link_hash_warning)
960 h = (struct elf_link_hash_entry *) h->root.u.i.link;
961 }
252b5132 962
13ae64f3
JJ		 963 r_type = elf_i386_tls_transition (info, r_type, h == NULL);
964
965 switch (r_type)
252b5132 966 {
37e55690
JJ		 967 case R_386_TLS_LDM:
968 htab->tls_ldm_got.refcount += 1;
969 goto create_got;
970
971 case R_386_PLT32:
972 /* This symbol requires a procedure linkage table entry. We
973 actually build the entry in adjust_dynamic_symbol,
974 because this might be a case of linking PIC code which is
975 never referenced by a dynamic object, in which case we
976 don't need to generate a procedure linkage table entry
977 after all. */
978
979 /* If this is a local symbol, we resolve it directly without
980 creating a procedure linkage table entry. */
981 if (h == NULL)
982 continue;
983
f5385ebf 984 h->needs_plt = 1;
37e55690
JJ		 985 h->plt.refcount += 1;
986 break;
987
13ae64f3 988 case R_386_TLS_IE_32:
37e55690
JJ		 989 case R_386_TLS_IE:
990 case R_386_TLS_GOTIE:
13ae64f3
JJ		 991 if (info->shared)
992 info->flags |= DF_STATIC_TLS;
37e55690
JJ		 993 /* Fall through */
994
252b5132 995 case R_386_GOT32:
13ae64f3 996 case R_386_TLS_GD:
67a4f2b7
AO		 997 case R_386_TLS_GOTDESC:
998 case R_386_TLS_DESC_CALL:
252b5132 999 /* This symbol requires a global offset table entry. */
13ae64f3
JJ		 1000 {
1001 int tls_type, old_tls_type;
1002
1003 switch (r_type)
1004 {
1005 default:
1006 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1007 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO		 1008 case R_386_TLS_GOTDESC:
1009 case R_386_TLS_DESC_CALL:
1010 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ		 1011 case R_386_TLS_IE_32:
1012 if (ELF32_R_TYPE (rel->r_info) == r_type)
1013 tls_type = GOT_TLS_IE_NEG;
cb878726
L		 1014 else if (h
1015 && ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
1016 /* If this is a GD->IE transition, we may use either
1017 of R_386_TLS_TPOFF and R_386_TLS_TPOFF32. But if
1018 we may have both R_386_TLS_IE and R_386_TLS_GD,
1019 we can't share the same R_386_TLS_TPOFF since
1020 they require different offsets. So we remember
1021 it comes from R_386_TLS_GD. */
1022 tls_type = GOT_TLS_IE | GOT_TLS_IE_GD;
37e55690 1023 else
37e55690
JJ		 1024 tls_type = GOT_TLS_IE;
1025 break;
1026 case R_386_TLS_IE:
cb878726
L		 1027 if (h)
1028 {
1029 /* We remember it comes from R_386_TLS_IE. */
1030 tls_type = GOT_TLS_IE_POS | GOT_TLS_IE_IE;
1031 break;
1032 }
37e55690
JJ		 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. */
cb878726
L		 1072 else if (old_tls_type != tls_type
1073 && old_tls_type != GOT_UNKNOWN
67a4f2b7 1074 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1075 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1076 {
67a4f2b7 1077 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1078 tls_type = old_tls_type;
67a4f2b7
AO		 1079 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1080 && GOT_TLS_GD_ANY_P (tls_type))
1081 tls_type |= old_tls_type;
13ae64f3
JJ		 1082 else
1083 {
1084 (*_bfd_error_handler)
d003868e 1085 (_("%B: `%s' accessed both as normal and "
55fd94b0 1086 "thread local symbol"),
d003868e 1087 abfd,
37e55690 1088 h ? h->root.root.string : "<local>");
b34976b6 1089 return FALSE;
13ae64f3
JJ		 1090 }
1091 }
1092
1093 if (old_tls_type != tls_type)
1094 {
1095 if (h != NULL)
1096 elf_i386_hash_entry (h)->tls_type = tls_type;
1097 else
1098 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1099 }
1100 }
0ac8d2ca
AM		 1101 /* Fall through */
1102
1103 case R_386_GOTOFF:
1104 case R_386_GOTPC:
13ae64f3 1105 create_got:
0ac8d2ca
AM		 1106 if (htab->sgot == NULL)
1107 {
1108 if (htab->elf.dynobj == NULL)
1109 htab->elf.dynobj = abfd;
1110 if (!create_got_section (htab->elf.dynobj, info))
b34976b6 1111 return FALSE;
0ac8d2ca 1112 }
37e55690
JJ		 1113 if (r_type != R_386_TLS_IE)
1114 break;
1115 /* Fall through */
252b5132 1116
37e55690
JJ		 1117 case R_386_TLS_LE_32:
1118 case R_386_TLS_LE:
1119 if (!info->shared)
1120 break;
bffbf940 1121 info->flags |= DF_STATIC_TLS;
b34976b6 1122 /* Fall through */
252b5132
RH		 1123
1124 case R_386_32:
1125 case R_386_PC32:
12d0ee4a 1126 if (h != NULL && !info->shared)
6725bdbf 1127 {
12d0ee4a 1128 /* If this reloc is in a read-only section, we might
ebe50bae
AM		 1129 need a copy reloc. We can't check reliably at this
1130 stage whether the section is read-only, as input
1131 sections have not yet been mapped to output sections.
1132 Tentatively set the flag for now, and correct in
1133 adjust_dynamic_symbol. */
f5385ebf 1134 h->non_got_ref = 1;
12d0ee4a
AM		 1135
1136 /* We may need a .plt entry if the function this reloc
1137 refers to is in a shared lib. */
51b64d56 1138 h->plt.refcount += 1;
c6585bbb 1139 if (r_type != R_386_PC32)
f5385ebf 1140 h->pointer_equality_needed = 1;
6725bdbf 1141 }
7843f00e 1142
252b5132 1143 /* If we are creating a shared library, and this is a reloc
f69da49f
AM		 1144 against a global symbol, or a non PC relative reloc
1145 against a local symbol, then we need to copy the reloc
1146 into the shared library. However, if we are linking with
1147 -Bsymbolic, we do not need to copy a reloc against a
1148 global symbol which is defined in an object we are
1149 including in the link (i.e., DEF_REGULAR is set). At
1150 this point we have not seen all the input files, so it is
1151 possible that DEF_REGULAR is not set now but will be set
1f655a09
L		 1152 later (it is never cleared). In case of a weak definition,
1153 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1154 a shared library. We account for that possibility below by
1f655a09
L		 1155 storing information in the relocs_copied field of the hash
1156 table entry. A similar situation occurs when creating
1157 shared libraries and symbol visibility changes render the
12d0ee4a 1158 symbol local.
56882138 1159
12d0ee4a
AM		 1160 If on the other hand, we are creating an executable, we
1161 may need to keep relocations for symbols satisfied by a
1162 dynamic library if we manage to avoid copy relocs for the
1163 symbol. */
1164 if ((info->shared
1165 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1166 && (r_type != R_386_PC32
12d0ee4a
AM		 1167 || (h != NULL
1168 && (! info->symbolic
1169 || h->root.type == bfd_link_hash_defweak
f5385ebf 1170 || !h->def_regular))))
a23b6845
AM		 1171 || (ELIMINATE_COPY_RELOCS
1172 && !info->shared
12d0ee4a
AM		 1173 && (sec->flags & SEC_ALLOC) != 0
1174 && h != NULL
12d0ee4a 1175 && (h->root.type == bfd_link_hash_defweak
f5385ebf 1176 || !h->def_regular)))
252b5132 1177 {
ec338859
AM		 1178 struct elf_i386_dyn_relocs *p;
1179 struct elf_i386_dyn_relocs **head;
1180
12d0ee4a
AM		 1181 /* We must copy these reloc types into the output file.
1182 Create a reloc section in dynobj and make room for
1183 this reloc. */
252b5132
RH		 1184 if (sreloc == NULL)
1185 {
1186 const char *name;
0ac8d2ca 1187 bfd *dynobj;
e92d460e
AM		 1188 unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
1189 unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name;
252b5132 1190
e92d460e 1191 name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
252b5132 1192 if (name == NULL)
b34976b6 1193 return FALSE;
252b5132 1194
c8492176
L		 1195 if (strncmp (name, ".rel", 4) != 0
1196 || strcmp (bfd_get_section_name (abfd, sec),
1197 name + 4) != 0)
1198 {
0c715baa 1199 (*_bfd_error_handler)
d003868e
AM		 1200 (_("%B: bad relocation section name `%s\'"),
1201 abfd, name);
f5f31454 1202 }
252b5132 1203
0ac8d2ca
AM		 1204 if (htab->elf.dynobj == NULL)
1205 htab->elf.dynobj = abfd;
1206
1207 dynobj = htab->elf.dynobj;
252b5132
RH		 1208 sreloc = bfd_get_section_by_name (dynobj, name);
1209 if (sreloc == NULL)
1210 {
1211 flagword flags;
1212
252b5132
RH		 1213 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1214 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1215 if ((sec->flags & SEC_ALLOC) != 0)
1216 flags |= SEC_ALLOC | SEC_LOAD;
3496cb2a
L		 1217 sreloc = bfd_make_section_with_flags (dynobj,
1218 name,
1219 flags);
252b5132 1220 if (sreloc == NULL
252b5132 1221 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
b34976b6 1222 return FALSE;
252b5132 1223 }
0c715baa 1224 elf_section_data (sec)->sreloc = sreloc;
252b5132
RH		 1225 }
1226
0c715baa
AM		 1227 /* If this is a global symbol, we count the number of
1228 relocations we need for this symbol. */
1229 if (h != NULL)
252b5132 1230 {
ec338859 1231 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
0c715baa
AM		 1232 }
1233 else
1234 {
e81d3500 1235 void **vpp;
ec338859
AM		 1236 /* Track dynamic relocs needed for local syms too.
1237 We really need local syms available to do this
1238 easily. Oh well. */
1239
1240 asection *s;
1241 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1242 sec, r_symndx);
1243 if (s == NULL)
b34976b6 1244 return FALSE;
ec338859 1245
e81d3500
DD		 1246 vpp = &elf_section_data (s)->local_dynrel;
1247 head = (struct elf_i386_dyn_relocs **)vpp;
ec338859
AM		 1248 }
1249
1250 p = *head;
1251 if (p == NULL || p->sec != sec)
1252 {
1253 bfd_size_type amt = sizeof *p;
55fd94b0 1254 p = bfd_alloc (htab->elf.dynobj, amt);
ec338859 1255 if (p == NULL)
b34976b6 1256 return FALSE;
ec338859
AM		 1257 p->next = *head;
1258 *head = p;
1259 p->sec = sec;
1260 p->count = 0;
1261 p->pc_count = 0;
252b5132 1262 }
ec338859
AM		 1263
1264 p->count += 1;
13ae64f3 1265 if (r_type == R_386_PC32)
ec338859 1266 p->pc_count += 1;
252b5132 1267 }
252b5132
RH		 1268 break;
1269
1270 /* This relocation describes the C++ object vtable hierarchy.
1271 Reconstruct it for later use during GC. */
1272 case R_386_GNU_VTINHERIT:
c152c796 1273 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 1274 return FALSE;
252b5132
RH		 1275 break;
1276
1277 /* This relocation describes which C++ vtable entries are actually
1278 used. Record for later use during GC. */
1279 case R_386_GNU_VTENTRY:
c152c796 1280 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
b34976b6 1281 return FALSE;
252b5132
RH		 1282 break;
1283
1284 default:
1285 break;
1286 }
1287 }
1288
b34976b6 1289 return TRUE;
252b5132
RH		 1290}
1291
1292/* Return the section that should be marked against GC for a given
1293 relocation. */
1294
1295static asection *
55fd94b0
AM		 1296elf_i386_gc_mark_hook (asection *sec,
1297 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1298 Elf_Internal_Rela *rel,
1299 struct elf_link_hash_entry *h,
1300 Elf_Internal_Sym *sym)
252b5132
RH		 1301{
1302 if (h != NULL)
1303 {
1304 switch (ELF32_R_TYPE (rel->r_info))
1305 {
1306 case R_386_GNU_VTINHERIT:
1307 case R_386_GNU_VTENTRY:
1308 break;
1309
1310 default:
1311 switch (h->root.type)
1312 {
1313 case bfd_link_hash_defined:
1314 case bfd_link_hash_defweak:
1315 return h->root.u.def.section;
1316
1317 case bfd_link_hash_common:
1318 return h->root.u.c.p->section;
1319
1320 default:
1321 break;
1322 }
1323 }
1324 }
1325 else
1e2f5b6e 1326 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
252b5132
RH		 1327
1328 return NULL;
1329}
1330
1331/* Update the got entry reference counts for the section being removed. */
1332
b34976b6 1333static bfd_boolean
55fd94b0
AM		 1334elf_i386_gc_sweep_hook (bfd *abfd,
1335 struct bfd_link_info *info,
1336 asection *sec,
1337 const Elf_Internal_Rela *relocs)
252b5132 1338{
dd5724d5
AM		 1339 Elf_Internal_Shdr *symtab_hdr;
1340 struct elf_link_hash_entry **sym_hashes;
1341 bfd_signed_vma *local_got_refcounts;
1342 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1343
ec338859 1344 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1345
6725bdbf
AM		 1346 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1347 sym_hashes = elf_sym_hashes (abfd);
1348 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM		 1349
1350 relend = relocs + sec->reloc_count;
1351 for (rel = relocs; rel < relend; rel++)
26e41594
AM		 1352 {
1353 unsigned long r_symndx;
1354 unsigned int r_type;
1355 struct elf_link_hash_entry *h = NULL;
37e55690 1356
26e41594
AM		 1357 r_symndx = ELF32_R_SYM (rel->r_info);
1358 if (r_symndx >= symtab_hdr->sh_info)
1359 {
1360 struct elf_i386_link_hash_entry *eh;
1361 struct elf_i386_dyn_relocs **pp;
1362 struct elf_i386_dyn_relocs *p;
dd5724d5 1363
26e41594 1364 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 1365 while (h->root.type == bfd_link_hash_indirect
1366 || h->root.type == bfd_link_hash_warning)
1367 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1368 eh = (struct elf_i386_link_hash_entry *) h;
0c715baa 1369
26e41594
AM		 1370 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1371 if (p->sec == sec)
1372 {
1373 /* Everything must go for SEC. */
1374 *pp = p->next;
1375 break;
1376 }
1377 }
0c715baa 1378
26e41594
AM		 1379 r_type = ELF32_R_TYPE (rel->r_info);
1380 r_type = elf_i386_tls_transition (info, r_type, h != NULL);
1381 switch (r_type)
1382 {
1383 case R_386_TLS_LDM:
1384 if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0)
1385 elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1;
1386 break;
0c715baa 1387
26e41594 1388 case R_386_TLS_GD:
67a4f2b7
AO		 1389 case R_386_TLS_GOTDESC:
1390 case R_386_TLS_DESC_CALL:
26e41594
AM		 1391 case R_386_TLS_IE_32:
1392 case R_386_TLS_IE:
1393 case R_386_TLS_GOTIE:
1394 case R_386_GOT32:
1395 if (h != NULL)
1396 {
1397 if (h->got.refcount > 0)
1398 h->got.refcount -= 1;
1399 }
1400 else if (local_got_refcounts != NULL)
1401 {
1402 if (local_got_refcounts[r_symndx] > 0)
1403 local_got_refcounts[r_symndx] -= 1;
1404 }
1405 break;
0c715baa 1406
26e41594
AM		 1407 case R_386_32:
1408 case R_386_PC32:
1409 if (info->shared)
1410 break;
1411 /* Fall through */
6725bdbf 1412
26e41594
AM		 1413 case R_386_PLT32:
1414 if (h != NULL)
1415 {
1416 if (h->plt.refcount > 0)
1417 h->plt.refcount -= 1;
1418 }
1419 break;
dd5724d5 1420
26e41594
AM		 1421 default:
1422 break;
1423 }
1424 }
252b5132 1425
b34976b6 1426 return TRUE;
252b5132
RH		 1427}
1428
1429/* Adjust a symbol defined by a dynamic object and referenced by a
1430 regular object. The current definition is in some section of the
1431 dynamic object, but we're not including those sections. We have to
1432 change the definition to something the rest of the link can
1433 understand. */
1434
b34976b6 1435static bfd_boolean
55fd94b0
AM		 1436elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
1437 struct elf_link_hash_entry *h)
252b5132 1438{
6725bdbf 1439 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1440 asection *s;
1441 unsigned int power_of_two;
1442
252b5132
RH		 1443 /* If this is a function, put it in the procedure linkage table. We
1444 will fill in the contents of the procedure linkage table later,
1445 when we know the address of the .got section. */
1446 if (h->type == STT_FUNC
f5385ebf 1447 || h->needs_plt)
252b5132 1448 {
6725bdbf 1449 if (h->plt.refcount <= 0
9c7a29a3
AM		 1450 || SYMBOL_CALLS_LOCAL (info, h)
1451 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1452 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 1453 {
1454 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM		 1455 file, but the symbol was never referred to by a dynamic
1456 object, or if all references were garbage collected. In
1457 such a case, we don't actually need to build a procedure
1458 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 1459 h->plt.offset = (bfd_vma) -1;
f5385ebf 1460 h->needs_plt = 0;
252b5132
RH		 1461 }
1462
b34976b6 1463 return TRUE;
252b5132 1464 }
6725bdbf
AM		 1465 else
1466 /* It's possible that we incorrectly decided a .plt reloc was
1467 needed for an R_386_PC32 reloc to a non-function sym in
1468 check_relocs. We can't decide accurately between function and
1469 non-function syms in check-relocs; Objects loaded later in
1470 the link may change h->type. So fix it now. */
bbd7ec4a 1471 h->plt.offset = (bfd_vma) -1;
252b5132
RH		 1472
1473 /* If this is a weak symbol, and there is a real definition, the
1474 processor independent code will have arranged for us to see the
1475 real definition first, and we can just use the same value. */
f6e332e6 1476 if (h->u.weakdef != NULL)
252b5132 1477 {
f6e332e6
AM		 1478 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1479 || h->u.weakdef->root.type == bfd_link_hash_defweak);
1480 h->root.u.def.section = h->u.weakdef->root.u.def.section;
1481 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 1482 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 1483 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 1484 return TRUE;
252b5132
RH		 1485 }
1486
1487 /* This is a reference to a symbol defined by a dynamic object which
1488 is not a function. */
1489
1490 /* If we are creating a shared library, we must presume that the
1491 only references to the symbol are via the global offset table.
1492 For such cases we need not do anything here; the relocations will
1493 be handled correctly by relocate_section. */
1494 if (info->shared)
b34976b6 1495 return TRUE;
252b5132 1496
7843f00e
ILT		 1497 /* If there are no references to this symbol that do not use the
1498 GOT, we don't need to generate a copy reloc. */
f5385ebf 1499 if (!h->non_got_ref)
b34976b6 1500 return TRUE;
7843f00e 1501
8bd621d8
AM		 1502 /* If -z nocopyreloc was given, we won't generate them either. */
1503 if (info->nocopyreloc)
1504 {
f5385ebf 1505 h->non_got_ref = 0;
b34976b6 1506 return TRUE;
8bd621d8
AM		 1507 }
1508
643796e3
DJ		 1509 htab = elf_i386_hash_table (info);
1510
1511 /* If there aren't any dynamic relocs in read-only sections, then
1512 we can keep the dynamic relocs and avoid the copy reloc. This
1513 doesn't work on VxWorks, where we can not have dynamic relocations
1514 (other than copy and jump slot relocations) in an executable. */
1515 if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks)
ebe50bae 1516 {
a23b6845
AM		 1517 struct elf_i386_link_hash_entry * eh;
1518 struct elf_i386_dyn_relocs *p;
ebe50bae 1519
a23b6845
AM		 1520 eh = (struct elf_i386_link_hash_entry *) h;
1521 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1522 {
1523 s = p->sec->output_section;
1524 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1525 break;
1526 }
1527
a23b6845
AM		 1528 if (p == NULL)
1529 {
f5385ebf 1530 h->non_got_ref = 0;
a23b6845
AM		 1531 return TRUE;
1532 }
ebe50bae
AM		 1533 }
1534
909272ee
AM		 1535 if (h->size == 0)
1536 {
1537 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1538 h->root.root.string);
1539 return TRUE;
1540 }
1541
252b5132
RH		 1542 /* We must allocate the symbol in our .dynbss section, which will
1543 become part of the .bss section of the executable. There will be
1544 an entry for this symbol in the .dynsym section. The dynamic
1545 object will contain position independent code, so all references
1546 from the dynamic object to this symbol will go through the global
1547 offset table. The dynamic linker will use the .dynsym entry to
1548 determine the address it must put in the global offset table, so
1549 both the dynamic object and the regular object will refer to the
1550 same memory location for the variable. */
1551
252b5132
RH		 1552 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
1553 copy the initial value out of the dynamic object and into the
0ac8d2ca 1554 runtime process image. */
252b5132
RH		 1555 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1556 {
eea6121a 1557 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 1558 h->needs_copy = 1;
252b5132
RH		 1559 }
1560
1561 /* We need to figure out the alignment required for this symbol. I
1562 have no idea how ELF linkers handle this. */
1563 power_of_two = bfd_log2 (h->size);
1564 if (power_of_two > 3)
1565 power_of_two = 3;
1566
1567 /* Apply the required alignment. */
0ac8d2ca 1568 s = htab->sdynbss;
eea6121a 1569 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
0ac8d2ca 1570 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
252b5132 1571 {
0ac8d2ca 1572 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
b34976b6 1573 return FALSE;
252b5132
RH		 1574 }
1575
1576 /* Define the symbol as being at this point in the section. */
1577 h->root.u.def.section = s;
eea6121a 1578 h->root.u.def.value = s->size;
252b5132
RH		 1579
1580 /* Increment the section size to make room for the symbol. */
eea6121a 1581 s->size += h->size;
252b5132 1582
b34976b6 1583 return TRUE;
252b5132
RH		 1584}
1585
6725bdbf 1586/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 1587 dynamic relocs. */
6725bdbf 1588
b34976b6 1589static bfd_boolean
55fd94b0 1590allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM		 1591{
1592 struct bfd_link_info *info;
1593 struct elf_i386_link_hash_table *htab;
5a15f56f 1594 struct elf_i386_link_hash_entry *eh;
0c715baa 1595 struct elf_i386_dyn_relocs *p;
6725bdbf 1596
e92d460e 1597 if (h->root.type == bfd_link_hash_indirect)
b34976b6 1598 return TRUE;
6725bdbf 1599
e92d460e
AM		 1600 if (h->root.type == bfd_link_hash_warning)
1601 /* When warning symbols are created, they **replace** the "real"
1602 entry in the hash table, thus we never get to see the real
1603 symbol in a hash traversal. So look at it now. */
1604 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1605
6725bdbf
AM		 1606 info = (struct bfd_link_info *) inf;
1607 htab = elf_i386_hash_table (info);
1608
ebe50bae 1609 if (htab->elf.dynamic_sections_created
9c7a29a3 1610 && h->plt.refcount > 0)
6725bdbf 1611 {
5a15f56f
AM		 1612 /* Make sure this symbol is output as a dynamic symbol.
1613 Undefined weak syms won't yet be marked as dynamic. */
1614 if (h->dynindx == -1
f5385ebf 1615 && !h->forced_local)
5a15f56f 1616 {
c152c796 1617 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1618 return FALSE;
5a15f56f
AM		 1619 }
1620
4e795f50
AM		 1621 if (info->shared
1622 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 1623 {
0ac8d2ca 1624 asection *s = htab->splt;
6725bdbf 1625
ced53ee5
AM		 1626 /* If this is the first .plt entry, make room for the special
1627 first entry. */
eea6121a
AM		 1628 if (s->size == 0)
1629 s->size += PLT_ENTRY_SIZE;
6725bdbf 1630
eea6121a 1631 h->plt.offset = s->size;
6725bdbf 1632
ced53ee5
AM		 1633 /* If this symbol is not defined in a regular file, and we are
1634 not generating a shared library, then set the symbol to this
1635 location in the .plt. This is required to make function
1636 pointers compare as equal between the normal executable and
1637 the shared library. */
1638 if (! info->shared
f5385ebf 1639 && !h->def_regular)
ced53ee5
AM		 1640 {
1641 h->root.u.def.section = s;
1642 h->root.u.def.value = h->plt.offset;
1643 }
6725bdbf 1644
ced53ee5 1645 /* Make room for this entry. */
eea6121a 1646 s->size += PLT_ENTRY_SIZE;
6725bdbf 1647
ced53ee5
AM		 1648 /* We also need to make an entry in the .got.plt section, which
1649 will be placed in the .got section by the linker script. */
eea6121a 1650 htab->sgotplt->size += 4;
6725bdbf 1651
6725bdbf 1652 /* We also need to make an entry in the .rel.plt section. */
eea6121a 1653 htab->srelplt->size += sizeof (Elf32_External_Rel);
5ae0bfb6 1654 htab->next_tls_desc_index++;
eac338cf
PB		 1655
1656 if (htab->is_vxworks && !info->shared)
1657 {
1658 /* VxWorks has a second set of relocations for each PLT entry
1659 in executables. They go in a separate relocation section,
1660 which is processed by the kernel loader. */
1661
1662 /* There are two relocations for the initial PLT entry: an
1663 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
1664 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
1665
1666 if (h->plt.offset == PLT_ENTRY_SIZE)
1667 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
1668
1669 /* There are two extra relocations for each subsequent PLT entry:
1670 an R_386_32 relocation for the GOT entry, and an R_386_32
1671 relocation for the PLT entry. */
1672
1673 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
1674 }
6725bdbf 1675 }
ced53ee5
AM		 1676 else
1677 {
51b64d56 1678 h->plt.offset = (bfd_vma) -1;
f5385ebf 1679 h->needs_plt = 0;
ced53ee5 1680 }
6725bdbf
AM		 1681 }
1682 else
1683 {
51b64d56 1684 h->plt.offset = (bfd_vma) -1;
f5385ebf 1685 h->needs_plt = 0;
6725bdbf
AM		 1686 }
1687
67a4f2b7
AO		 1688 eh = (struct elf_i386_link_hash_entry *) h;
1689 eh->tlsdesc_got = (bfd_vma) -1;
1690
37e55690 1691 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ		 1692 make it a R_386_TLS_LE_32 requiring no TLS entry. */
1693 if (h->got.refcount > 0
1694 && !info->shared
1695 && h->dynindx == -1
37e55690 1696 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 1697 h->got.offset = (bfd_vma) -1;
13ae64f3 1698 else if (h->got.refcount > 0)
6725bdbf 1699 {
0ac8d2ca 1700 asection *s;
b34976b6 1701 bfd_boolean dyn;
13ae64f3 1702 int tls_type = elf_i386_hash_entry(h)->tls_type;
cb878726
L		 1703
1704 /* If we have both R_386_TLS_IE and R_386_TLS_GD, GOT_TLS_IE_BOTH
1705 should be used. */
1706 if ((tls_type & GOT_TLS_IE_MASK)
1707 == (GOT_TLS_IE_IE | GOT_TLS_IE_GD))
1708 tls_type = GOT_TLS_IE_BOTH;
1709 else
1710 tls_type &= GOT_TLS_MASK;
6725bdbf 1711
5a15f56f
AM		 1712 /* Make sure this symbol is output as a dynamic symbol.
1713 Undefined weak syms won't yet be marked as dynamic. */
1714 if (h->dynindx == -1
f5385ebf 1715 && !h->forced_local)
5a15f56f 1716 {
c152c796 1717 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1718 return FALSE;
5a15f56f
AM		 1719 }
1720
6725bdbf 1721 s = htab->sgot;
67a4f2b7
AO		 1722 if (GOT_TLS_GDESC_P (tls_type))
1723 {
1724 eh->tlsdesc_got = htab->sgotplt->size
1725 - elf_i386_compute_jump_table_size (htab);
1726 htab->sgotplt->size += 8;
1727 h->got.offset = (bfd_vma) -2;
1728 }
1729 if (! GOT_TLS_GDESC_P (tls_type)
1730 || GOT_TLS_GD_P (tls_type))
1731 {
1732 h->got.offset = s->size;
1733 s->size += 4;
1734 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
1735 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
1736 s->size += 4;
1737 }
ebe50bae 1738 dyn = htab->elf.dynamic_sections_created;
13ae64f3 1739 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ		 1740 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
1741 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
1742 need two), R_386_TLS_GD needs one if local symbol and two if
1743 global. */
1744 if (tls_type == GOT_TLS_IE_BOTH)
eea6121a 1745 htab->srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 1746 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 1747 || (tls_type & GOT_TLS_IE))
eea6121a 1748 htab->srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 1749 else if (GOT_TLS_GD_P (tls_type))
eea6121a 1750 htab->srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 1751 else if (! GOT_TLS_GDESC_P (tls_type)
1752 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1753 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L		 1754 && (info->shared
1755 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
eea6121a 1756 htab->srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7
AO		 1757 if (GOT_TLS_GDESC_P (tls_type))
1758 htab->srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM		 1759 }
1760 else
51b64d56 1761 h->got.offset = (bfd_vma) -1;
6725bdbf 1762
5a15f56f 1763 if (eh->dyn_relocs == NULL)
b34976b6 1764 return TRUE;
5a15f56f 1765
0c715baa
AM		 1766 /* In the shared -Bsymbolic case, discard space allocated for
1767 dynamic pc-relative relocs against symbols which turn out to be
1768 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM		 1769 space for pc-relative relocs that have become local due to symbol
1770 visibility changes. */
0c715baa
AM		 1771
1772 if (info->shared)
5a15f56f 1773 {
09695f56
AM		 1774 /* The only reloc that uses pc_count is R_386_PC32, which will
1775 appear on a call or on something like ".long foo - .". We
1776 want calls to protected symbols to resolve directly to the
1777 function rather than going via the plt. If people want
1778 function pointer comparisons to work as expected then they
1779 should avoid writing assembly like ".long foo - .". */
1780 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 1781 {
0c715baa
AM		 1782 struct elf_i386_dyn_relocs **pp;
1783
1784 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1785 {
1786 p->count -= p->pc_count;
1787 p->pc_count = 0;
1788 if (p->count == 0)
1789 *pp = p->next;
1790 else
1791 pp = &p->next;
1792 }
5a15f56f 1793 }
4e795f50
AM		 1794
1795 /* Also discard relocs on undefined weak syms with non-default
1796 visibility. */
22d606e9 1797 if (eh->dyn_relocs != NULL
4e795f50 1798 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 1799 {
1800 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1801 eh->dyn_relocs = NULL;
1802
1803 /* Make sure undefined weak symbols are output as a dynamic
1804 symbol in PIEs. */
1805 else if (h->dynindx == -1
1806 && !h->forced_local)
1807 {
1808 if (! bfd_elf_link_record_dynamic_symbol (info, h))
1809 return FALSE;
1810 }
1811 }
0c715baa 1812 }
a23b6845 1813 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM		 1814 {
1815 /* For the non-shared case, discard space for relocs against
1816 symbols which turn out to need copy relocs or are not
1817 dynamic. */
1818
f5385ebf
AM		 1819 if (!h->non_got_ref
1820 && ((h->def_dynamic
1821 && !h->def_regular)
ebe50bae 1822 || (htab->elf.dynamic_sections_created
0c715baa
AM		 1823 && (h->root.type == bfd_link_hash_undefweak
1824 || h->root.type == bfd_link_hash_undefined))))
1825 {
1826 /* Make sure this symbol is output as a dynamic symbol.
1827 Undefined weak syms won't yet be marked as dynamic. */
1828 if (h->dynindx == -1
f5385ebf 1829 && !h->forced_local)
0c715baa 1830 {
c152c796 1831 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 1832 return FALSE;
0c715baa 1833 }
5a15f56f 1834
0c715baa
AM		 1835 /* If that succeeded, we know we'll be keeping all the
1836 relocs. */
1837 if (h->dynindx != -1)
1838 goto keep;
1839 }
1840
1841 eh->dyn_relocs = NULL;
1842
ec338859 1843 keep: ;
5a15f56f
AM		 1844 }
1845
0c715baa
AM		 1846 /* Finally, allocate space. */
1847 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 1848 {
0c715baa 1849 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 1850 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM		 1851 }
1852
b34976b6 1853 return TRUE;
6725bdbf
AM		 1854}
1855
0c715baa
AM		 1856/* Find any dynamic relocs that apply to read-only sections. */
1857
b34976b6 1858static bfd_boolean
55fd94b0 1859readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM		 1860{
1861 struct elf_i386_link_hash_entry *eh;
1862 struct elf_i386_dyn_relocs *p;
1863
e92d460e
AM		 1864 if (h->root.type == bfd_link_hash_warning)
1865 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1866
0c715baa
AM		 1867 eh = (struct elf_i386_link_hash_entry *) h;
1868 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1869 {
1870 asection *s = p->sec->output_section;
1871
1872 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1873 {
1874 struct bfd_link_info *info = (struct bfd_link_info *) inf;
1875
1876 info->flags |= DF_TEXTREL;
1877
1878 /* Not an error, just cut short the traversal. */
b34976b6 1879 return FALSE;
0c715baa
AM		 1880 }
1881 }
b34976b6 1882 return TRUE;
0c715baa
AM		 1883}
1884
252b5132
RH		 1885/* Set the sizes of the dynamic sections. */
1886
b34976b6 1887static bfd_boolean
55fd94b0
AM		 1888elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1889 struct bfd_link_info *info)
252b5132 1890{
6725bdbf 1891 struct elf_i386_link_hash_table *htab;
252b5132
RH		 1892 bfd *dynobj;
1893 asection *s;
b34976b6 1894 bfd_boolean relocs;
0c715baa 1895 bfd *ibfd;
252b5132 1896
6725bdbf 1897 htab = elf_i386_hash_table (info);
ebe50bae 1898 dynobj = htab->elf.dynobj;
ffb2e45b
AM		 1899 if (dynobj == NULL)
1900 abort ();
252b5132 1901
ebe50bae 1902 if (htab->elf.dynamic_sections_created)
252b5132
RH		 1903 {
1904 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 1905 if (info->executable)
252b5132
RH		 1906 {
1907 s = bfd_get_section_by_name (dynobj, ".interp");
ffb2e45b
AM		 1908 if (s == NULL)
1909 abort ();
eea6121a 1910 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 1911 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1912 }
161d71a6 1913 }
6725bdbf 1914
0c715baa
AM		 1915 /* Set up .got offsets for local syms, and space for local dynamic
1916 relocs. */
1917 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L		 1918 {
1919 bfd_signed_vma *local_got;
1920 bfd_signed_vma *end_local_got;
13ae64f3 1921 char *local_tls_type;
67a4f2b7 1922 bfd_vma *local_tlsdesc_gotent;
161d71a6
L		 1923 bfd_size_type locsymcount;
1924 Elf_Internal_Shdr *symtab_hdr;
1925 asection *srel;
6725bdbf 1926
0c715baa 1927 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
161d71a6 1928 continue;
6725bdbf 1929
0c715baa
AM		 1930 for (s = ibfd->sections; s != NULL; s = s->next)
1931 {
ec338859 1932 struct elf_i386_dyn_relocs *p;
0c715baa 1933
e81d3500
DD		 1934 for (p = ((struct elf_i386_dyn_relocs *)
1935 elf_section_data (s)->local_dynrel);
ec338859
AM		 1936 p != NULL;
1937 p = p->next)
0c715baa 1938 {
ec338859
AM		 1939 if (!bfd_is_abs_section (p->sec)
1940 && bfd_is_abs_section (p->sec->output_section))
1941 {
1942 /* Input section has been discarded, either because
1943 it is a copy of a linkonce section or due to
1944 linker script /DISCARD/, so we'll be discarding
1945 the relocs too. */
1946 }
248866a8 1947 else if (p->count != 0)
ec338859
AM		 1948 {
1949 srel = elf_section_data (p->sec)->sreloc;
eea6121a 1950 srel->size += p->count * sizeof (Elf32_External_Rel);
248866a8
AM		 1951 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1952 info->flags |= DF_TEXTREL;
ec338859 1953 }
0c715baa
AM		 1954 }
1955 }
1956
1957 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L		 1958 if (!local_got)
1959 continue;
6725bdbf 1960
0c715baa 1961 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
161d71a6
L		 1962 locsymcount = symtab_hdr->sh_info;
1963 end_local_got = local_got + locsymcount;
13ae64f3 1964 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 1965 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
161d71a6
L		 1966 s = htab->sgot;
1967 srel = htab->srelgot;
67a4f2b7
AO		 1968 for (; local_got < end_local_got;
1969 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 1970 {
67a4f2b7 1971 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 1972 if (*local_got > 0)
6725bdbf 1973 {
67a4f2b7
AO		 1974 if (GOT_TLS_GDESC_P (*local_tls_type))
1975 {
1976 *local_tlsdesc_gotent = htab->sgotplt->size
1977 - elf_i386_compute_jump_table_size (htab);
1978 htab->sgotplt->size += 8;
1979 *local_got = (bfd_vma) -2;
1980 }
1981 if (! GOT_TLS_GDESC_P (*local_tls_type)
1982 || GOT_TLS_GD_P (*local_tls_type))
1983 {
1984 *local_got = s->size;
1985 s->size += 4;
1986 if (GOT_TLS_GD_P (*local_tls_type)
1987 || *local_tls_type == GOT_TLS_IE_BOTH)
1988 s->size += 4;
1989 }
13ae64f3 1990 if (info->shared
67a4f2b7 1991 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ		 1992 || (*local_tls_type & GOT_TLS_IE))
1993 {
1994 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 1995 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO		 1996 else if (GOT_TLS_GD_P (*local_tls_type)
1997 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 1998 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7
AO		 1999 if (GOT_TLS_GDESC_P (*local_tls_type))
2000 htab->srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2001 }
6725bdbf 2002 }
161d71a6
L		 2003 else
2004 *local_got = (bfd_vma) -1;
6725bdbf 2005 }
252b5132 2006 }
6725bdbf 2007
13ae64f3
JJ		 2008 if (htab->tls_ldm_got.refcount > 0)
2009 {
2010 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2011 relocs. */
eea6121a
AM		 2012 htab->tls_ldm_got.offset = htab->sgot->size;
2013 htab->sgot->size += 8;
2014 htab->srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ		 2015 }
2016 else
2017 htab->tls_ldm_got.offset = -1;
2018
0c715baa
AM		 2019 /* Allocate global sym .plt and .got entries, and space for global
2020 sym dynamic relocs. */
ebe50bae 2021 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
252b5132 2022
67a4f2b7
AO		 2023 /* For every jump slot reserved in the sgotplt, reloc_count is
2024 incremented. However, when we reserve space for TLS descriptors,
2025 it's not incremented, so in order to compute the space reserved
2026 for them, it suffices to multiply the reloc count by the jump
2027 slot size. */
2028 if (htab->srelplt)
5ae0bfb6 2029 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
67a4f2b7 2030
5a15f56f
AM		 2031 /* We now have determined the sizes of the various dynamic sections.
2032 Allocate memory for them. */
b34976b6 2033 relocs = FALSE;
252b5132
RH		 2034 for (s = dynobj->sections; s != NULL; s = s->next)
2035 {
eac338cf
PB		 2036 bfd_boolean strip_section = TRUE;
2037
252b5132
RH		 2038 if ((s->flags & SEC_LINKER_CREATED) == 0)
2039 continue;
2040
6725bdbf
AM		 2041 if (s == htab->splt
2042 || s == htab->sgot
75ff4589
L		 2043 || s == htab->sgotplt
2044 || s == htab->sdynbss)
252b5132 2045 {
6725bdbf
AM		 2046 /* Strip this section if we don't need it; see the
2047 comment below. */
eac338cf
PB		 2048 /* We'd like to strip these sections if they aren't needed, but if
2049 we've exported dynamic symbols from them we must leave them.
2050 It's too late to tell BFD to get rid of the symbols. */
2051
7325306f 2052 if (htab->elf.hplt != NULL)
eac338cf 2053 strip_section = FALSE;
252b5132 2054 }
6725bdbf 2055 else if (strncmp (bfd_get_section_name (dynobj, s), ".rel", 4) == 0)
252b5132 2056 {
eac338cf 2057 if (s->size != 0 && s != htab->srelplt && s != htab->srelplt2)
b34976b6 2058 relocs = TRUE;
252b5132 2059
0ac8d2ca
AM		 2060 /* We use the reloc_count field as a counter if we need
2061 to copy relocs into the output file. */
5ae0bfb6 2062 s->reloc_count = 0;
252b5132 2063 }
6725bdbf 2064 else
252b5132
RH		 2065 {
2066 /* It's not one of our sections, so don't allocate space. */
2067 continue;
2068 }
2069
c456f082 2070 if (s->size == 0)
252b5132 2071 {
0ac8d2ca
AM		 2072 /* If we don't need this section, strip it from the
2073 output file. This is mostly to handle .rel.bss and
2074 .rel.plt. We must create both sections in
2075 create_dynamic_sections, because they must be created
2076 before the linker maps input sections to output
2077 sections. The linker does that before
2078 adjust_dynamic_symbol is called, and it is that
2079 function which decides whether anything needs to go
2080 into these sections. */
c456f082
AM		 2081 if (strip_section)
2082 s->flags |= SEC_EXCLUDE;
252b5132
RH		 2083 continue;
2084 }
2085
c456f082
AM		 2086 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2087 continue;
2088
f69da49f
AM		 2089 /* Allocate memory for the section contents. We use bfd_zalloc
2090 here in case unused entries are not reclaimed before the
2091 section's contents are written out. This should not happen,
2092 but this way if it does, we get a R_386_NONE reloc instead
2093 of garbage. */
eea6121a 2094 s->contents = bfd_zalloc (dynobj, s->size);
6725bdbf 2095 if (s->contents == NULL)
b34976b6 2096 return FALSE;
252b5132
RH		 2097 }
2098
ebe50bae 2099 if (htab->elf.dynamic_sections_created)
252b5132
RH		 2100 {
2101 /* Add some entries to the .dynamic section. We fill in the
2102 values later, in elf_i386_finish_dynamic_sections, but we
2103 must add the entries now so that we get the correct size for
2104 the .dynamic section. The DT_DEBUG entry is filled in by the
2105 dynamic linker and used by the debugger. */
dc810e39 2106#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2107 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2108
36af4a4e 2109 if (info->executable)
252b5132 2110 {
dc810e39 2111 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2112 return FALSE;
252b5132
RH		 2113 }
2114
eea6121a 2115 if (htab->splt->size != 0)
252b5132 2116 {
dc810e39
AM		 2117 if (!add_dynamic_entry (DT_PLTGOT, 0)
2118 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2119 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2120 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2121 return FALSE;
252b5132
RH		 2122 }
2123
2124 if (relocs)
2125 {
dc810e39
AM		 2126 if (!add_dynamic_entry (DT_REL, 0)
2127 || !add_dynamic_entry (DT_RELSZ, 0)
2128 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 2129 return FALSE;
252b5132 2130
0c715baa
AM		 2131 /* If any dynamic relocs apply to a read-only section,
2132 then we need a DT_TEXTREL entry. */
248866a8
AM		 2133 if ((info->flags & DF_TEXTREL) == 0)
2134 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
2135 (PTR) info);
0c715baa
AM		 2136
2137 if ((info->flags & DF_TEXTREL) != 0)
2138 {
2139 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2140 return FALSE;
0c715baa 2141 }
252b5132
RH		 2142 }
2143 }
dc810e39 2144#undef add_dynamic_entry
252b5132 2145
b34976b6 2146 return TRUE;
252b5132
RH		 2147}
2148
67a4f2b7
AO		 2149static bfd_boolean
2150elf_i386_always_size_sections (bfd *output_bfd,
2151 struct bfd_link_info *info)
2152{
2153 asection *tls_sec = elf_hash_table (info)->tls_sec;
2154
2155 if (tls_sec)
2156 {
2157 struct elf_link_hash_entry *tlsbase;
2158
2159 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
2160 "_TLS_MODULE_BASE_",
2161 FALSE, FALSE, FALSE);
2162
2163 if (tlsbase && tlsbase->type == STT_TLS)
2164 {
2165 struct bfd_link_hash_entry *bh = NULL;
2166 const struct elf_backend_data *bed
2167 = get_elf_backend_data (output_bfd);
2168
2169 if (!(_bfd_generic_link_add_one_symbol
2170 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
2171 tls_sec, 0, NULL, FALSE,
2172 bed->collect, &bh)))
2173 return FALSE;
2174 tlsbase = (struct elf_link_hash_entry *)bh;
2175 tlsbase->def_regular = 1;
2176 tlsbase->other = STV_HIDDEN;
2177 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
2178 }
2179 }
2180
2181 return TRUE;
2182}
2183
38701953
AM		 2184/* Set the correct type for an x86 ELF section. We do this by the
2185 section name, which is a hack, but ought to work. */
2186
b34976b6 2187static bfd_boolean
55fd94b0
AM		 2188elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2189 Elf_Internal_Shdr *hdr,
2190 asection *sec)
38701953
AM		 2191{
2192 register const char *name;
2193
2194 name = bfd_get_section_name (abfd, sec);
2195
2196 /* This is an ugly, but unfortunately necessary hack that is
2197 needed when producing EFI binaries on x86. It tells
2198 elf.c:elf_fake_sections() not to consider ".reloc" as a section
2199 containing ELF relocation info. We need this hack in order to
2200 be able to generate ELF binaries that can be translated into
2201 EFI applications (which are essentially COFF objects). Those
2202 files contain a COFF ".reloc" section inside an ELFNN object,
2203 which would normally cause BFD to segfault because it would
2204 attempt to interpret this section as containing relocation
2205 entries for section "oc". With this hack enabled, ".reloc"
2206 will be treated as a normal data section, which will avoid the
2207 segfault. However, you won't be able to create an ELFNN binary
2208 with a section named "oc" that needs relocations, but that's
2209 the kind of ugly side-effects you get when detecting section
2210 types based on their names... In practice, this limitation is
2211 unlikely to bite. */
2212 if (strcmp (name, ".reloc") == 0)
2213 hdr->sh_type = SHT_PROGBITS;
2214
b34976b6 2215 return TRUE;
38701953
AM		 2216}
2217
13ae64f3
JJ		 2218/* Return the base VMA address which should be subtracted from real addresses
2219 when resolving @dtpoff relocation.
2220 This is PT_TLS segment p_vaddr. */
2221
2222static bfd_vma
55fd94b0 2223dtpoff_base (struct bfd_link_info *info)
13ae64f3 2224{
e1918d23
AM		 2225 /* If tls_sec is NULL, we should have signalled an error already. */
2226 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 2227 return 0;
e1918d23 2228 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ		 2229}
2230
2231/* Return the relocation value for @tpoff relocation
2232 if STT_TLS virtual address is ADDRESS. */
2233
2234static bfd_vma
55fd94b0 2235tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 2236{
e1918d23 2237 struct elf_link_hash_table *htab = elf_hash_table (info);
13ae64f3 2238
e1918d23
AM		 2239 /* If tls_sec is NULL, we should have signalled an error already. */
2240 if (htab->tls_sec == NULL)
6a30718d 2241 return 0;
e1918d23 2242 return htab->tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ		 2243}
2244
252b5132
RH		 2245/* Relocate an i386 ELF section. */
2246
b34976b6 2247static bfd_boolean
55fd94b0
AM		 2248elf_i386_relocate_section (bfd *output_bfd,
2249 struct bfd_link_info *info,
2250 bfd *input_bfd,
2251 asection *input_section,
2252 bfd_byte *contents,
2253 Elf_Internal_Rela *relocs,
2254 Elf_Internal_Sym *local_syms,
2255 asection **local_sections)
252b5132 2256{
6725bdbf 2257 struct elf_i386_link_hash_table *htab;
252b5132
RH		 2258 Elf_Internal_Shdr *symtab_hdr;
2259 struct elf_link_hash_entry **sym_hashes;
2260 bfd_vma *local_got_offsets;
67a4f2b7 2261 bfd_vma *local_tlsdesc_gotents;
252b5132
RH		 2262 Elf_Internal_Rela *rel;
2263 Elf_Internal_Rela *relend;
2264
6725bdbf 2265 htab = elf_i386_hash_table (info);
252b5132
RH		 2266 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2267 sym_hashes = elf_sym_hashes (input_bfd);
2268 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 2269 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
252b5132 2270
252b5132
RH		 2271 rel = relocs;
2272 relend = relocs + input_section->reloc_count;
2273 for (; rel < relend; rel++)
2274 {
13ae64f3 2275 unsigned int r_type;
252b5132
RH		 2276 reloc_howto_type *howto;
2277 unsigned long r_symndx;
2278 struct elf_link_hash_entry *h;
2279 Elf_Internal_Sym *sym;
2280 asection *sec;
67a4f2b7 2281 bfd_vma off, offplt;
252b5132 2282 bfd_vma relocation;
b34976b6 2283 bfd_boolean unresolved_reloc;
252b5132 2284 bfd_reloc_status_type r;
1b452ec6 2285 unsigned int indx;
13ae64f3 2286 int tls_type;
252b5132
RH		 2287
2288 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM		 2289 if (r_type == R_386_GNU_VTINHERIT
2290 || r_type == R_386_GNU_VTENTRY)
252b5132 2291 continue;
dc47f327 2292
55fd94b0 2293 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ		 2294 && ((indx = r_type - R_386_ext_offset) - R_386_standard
2295 >= R_386_ext - R_386_standard)
2296 && ((indx = r_type - R_386_tls_offset) - R_386_ext
2297 >= R_386_tls - R_386_ext))
252b5132 2298 {
6ba842b6 2299 (*_bfd_error_handler)
d003868e
AM		 2300 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
2301 input_bfd, input_section, r_type);
252b5132 2302 bfd_set_error (bfd_error_bad_value);
b34976b6 2303 return FALSE;
252b5132 2304 }
1b452ec6 2305 howto = elf_howto_table + indx;
252b5132
RH		 2306
2307 r_symndx = ELF32_R_SYM (rel->r_info);
2308
1049f94e 2309 if (info->relocatable)
252b5132 2310 {
4a335f3d 2311 bfd_vma val;
4a335f3d
AM		 2312 bfd_byte *where;
2313
0ac8d2ca 2314 /* This is a relocatable link. We don't have to change
252b5132
RH		 2315 anything, unless the reloc is against a section symbol,
2316 in which case we have to adjust according to where the
2317 section symbol winds up in the output section. */
4a335f3d
AM		 2318 if (r_symndx >= symtab_hdr->sh_info)
2319 continue;
2320
2321 sym = local_syms + r_symndx;
2322 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2323 continue;
2324
2325 sec = local_sections[r_symndx];
2326 val = sec->output_offset;
2327 if (val == 0)
2328 continue;
2329
2330 where = contents + rel->r_offset;
2331 switch (howto->size)
252b5132 2332 {
16a10388 2333 /* FIXME: overflow checks. */
4a335f3d 2334 case 0:
16a10388 2335 val += bfd_get_8 (input_bfd, where);
4a335f3d 2336 bfd_put_8 (input_bfd, val, where);
4a335f3d
AM		 2337 break;
2338 case 1:
16a10388 2339 val += bfd_get_16 (input_bfd, where);
4a335f3d 2340 bfd_put_16 (input_bfd, val, where);
4a335f3d
AM		 2341 break;
2342 case 2:
2343 val += bfd_get_32 (input_bfd, where);
2344 bfd_put_32 (input_bfd, val, where);
2345 break;
2346 default:
2347 abort ();
252b5132 2348 }
252b5132
RH		 2349 continue;
2350 }
2351
2352 /* This is a final link. */
2353 h = NULL;
2354 sym = NULL;
2355 sec = NULL;
b34976b6 2356 unresolved_reloc = FALSE;
252b5132
RH		 2357 if (r_symndx < symtab_hdr->sh_info)
2358 {
2359 sym = local_syms + r_symndx;
2360 sec = local_sections[r_symndx];
2361 relocation = (sec->output_section->vma
2362 + sec->output_offset
2363 + sym->st_value);
f8df10f4
JJ		 2364 if ((sec->flags & SEC_MERGE)
2365 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2366 {
2367 asection *msec;
2368 bfd_vma addend;
4a335f3d 2369 bfd_byte *where = contents + rel->r_offset;
f8df10f4 2370
4a335f3d 2371 switch (howto->size)
f8df10f4 2372 {
4a335f3d
AM		 2373 case 0:
2374 addend = bfd_get_8 (input_bfd, where);
2375 if (howto->pc_relative)
2376 {
2377 addend = (addend ^ 0x80) - 0x80;
2378 addend += 1;
2379 }
2380 break;
2381 case 1:
2382 addend = bfd_get_16 (input_bfd, where);
2383 if (howto->pc_relative)
2384 {
2385 addend = (addend ^ 0x8000) - 0x8000;
2386 addend += 2;
2387 }
2388 break;
2389 case 2:
2390 addend = bfd_get_32 (input_bfd, where);
2391 if (howto->pc_relative)
2392 {
2393 addend = (addend ^ 0x80000000) - 0x80000000;
2394 addend += 4;
2395 }
2396 break;
2397 default:
2398 abort ();
f8df10f4
JJ		 2399 }
2400
f8df10f4 2401 msec = sec;
4a335f3d
AM		 2402 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend);
2403 addend -= relocation;
f8df10f4 2404 addend += msec->output_section->vma + msec->output_offset;
4a335f3d
AM		 2405
2406 switch (howto->size)
2407 {
2408 case 0:
16a10388 2409 /* FIXME: overflow checks. */
4a335f3d
AM		 2410 if (howto->pc_relative)
2411 addend -= 1;
2412 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM		 2413 break;
2414 case 1:
2415 if (howto->pc_relative)
2416 addend -= 2;
2417 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM		 2418 break;
2419 case 2:
2420 if (howto->pc_relative)
2421 addend -= 4;
2422 bfd_put_32 (input_bfd, addend, where);
2423 break;
2424 }
f8df10f4 2425 }
252b5132
RH		 2426 }
2427 else
2428 {
560e09e9 2429 bfd_boolean warned;
ffb2e45b 2430
b2a8e766
AM		 2431 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2432 r_symndx, symtab_hdr, sym_hashes,
2433 h, sec, relocation,
2434 unresolved_reloc, warned);
252b5132
RH		 2435 }
2436
9635fe29
AM		 2437 if (r_symndx == 0)
2438 {
2439 /* r_symndx will be zero only for relocs against symbols from
2440 removed linkonce sections, or sections discarded by a linker
2441 script. For these relocs, we just want the section contents
2442 zeroed. Avoid any special processing in the switch below. */
2443 r_type = R_386_NONE;
2444
2445 relocation = 0;
2446 if (howto->pc_relative)
2447 relocation = (input_section->output_section->vma
2448 + input_section->output_offset
2449 + rel->r_offset);
2450 }
2451
252b5132
RH		 2452 switch (r_type)
2453 {
2454 case R_386_GOT32:
2455 /* Relocation is to the entry for this symbol in the global
2456 offset table. */
ffb2e45b
AM		 2457 if (htab->sgot == NULL)
2458 abort ();
252b5132
RH		 2459
2460 if (h != NULL)
2461 {
b34976b6 2462 bfd_boolean dyn;
252b5132
RH		 2463
2464 off = h->got.offset;
ebe50bae 2465 dyn = htab->elf.dynamic_sections_created;
26e41594 2466 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 2467 || (info->shared
586119b3 2468 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L		 2469 || (ELF_ST_VISIBILITY (h->other)
2470 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2471 {
2472 /* This is actually a static link, or it is a
2473 -Bsymbolic link and the symbol is defined
2474 locally, or the symbol was forced to be local
2475 because of a version file. We must initialize
2476 this entry in the global offset table. Since the
2477 offset must always be a multiple of 4, we use the
2478 least significant bit to record whether we have
2479 initialized it already.
2480
2481 When doing a dynamic link, we create a .rel.got
2482 relocation entry to initialize the value. This
2483 is done in the finish_dynamic_symbol routine. */
2484 if ((off & 1) != 0)
2485 off &= ~1;
2486 else
2487 {
2488 bfd_put_32 (output_bfd, relocation,
6725bdbf 2489 htab->sgot->contents + off);
252b5132
RH		 2490 h->got.offset |= 1;
2491 }
2492 }
8c694914 2493 else
b34976b6 2494 unresolved_reloc = FALSE;
252b5132
RH		 2495 }
2496 else
2497 {
ffb2e45b
AM		 2498 if (local_got_offsets == NULL)
2499 abort ();
252b5132
RH		 2500
2501 off = local_got_offsets[r_symndx];
2502
2503 /* The offset must always be a multiple of 4. We use
83be169b
AM		 2504 the least significant bit to record whether we have
2505 already generated the necessary reloc. */
252b5132
RH		 2506 if ((off & 1) != 0)
2507 off &= ~1;
2508 else
2509 {
6725bdbf
AM		 2510 bfd_put_32 (output_bfd, relocation,
2511 htab->sgot->contents + off);
252b5132
RH		 2512
2513 if (info->shared)
2514 {
947216bf
AM		 2515 asection *s;
2516 Elf_Internal_Rela outrel;
2517 bfd_byte *loc;
252b5132 2518
947216bf
AM		 2519 s = htab->srelgot;
2520 if (s == NULL)
ffb2e45b 2521 abort ();
252b5132 2522
6725bdbf
AM		 2523 outrel.r_offset = (htab->sgot->output_section->vma
2524 + htab->sgot->output_offset
252b5132
RH		 2525 + off);
2526 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
947216bf
AM		 2527 loc = s->contents;
2528 loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 2529 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 2530 }
2531
2532 local_got_offsets[r_symndx] |= 1;
2533 }
252b5132
RH		 2534 }
2535
ffb2e45b
AM		 2536 if (off >= (bfd_vma) -2)
2537 abort ();
2538
8c37241b
JJ		 2539 relocation = htab->sgot->output_section->vma
2540 + htab->sgot->output_offset + off
2541 - htab->sgotplt->output_section->vma
2542 - htab->sgotplt->output_offset;
252b5132
RH		 2543 break;
2544
2545 case R_386_GOTOFF:
2546 /* Relocation is relative to the start of the global offset
2547 table. */
2548
90f487df
L		 2549 /* Check to make sure it isn't a protected function symbol
2550 for shared library since it may not be local when used
2551 as function address. */
2552 if (info->shared
8fe76924 2553 && !info->executable
90f487df
L		 2554 && h
2555 && h->def_regular
2556 && h->type == STT_FUNC
2557 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2558 {
2559 (*_bfd_error_handler)
2560 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
2561 input_bfd, h->root.root.string);
2562 bfd_set_error (bfd_error_bad_value);
2563 return FALSE;
2564 }
2565
8c37241b
JJ		 2566 /* Note that sgot is not involved in this
2567 calculation. We always want the start of .got.plt. If we
2568 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH		 2569 permitted by the ABI, we might have to change this
2570 calculation. */
8c37241b
JJ		 2571 relocation -= htab->sgotplt->output_section->vma
2572 + htab->sgotplt->output_offset;
252b5132
RH		 2573 break;
2574
2575 case R_386_GOTPC:
2576 /* Use global offset table as symbol value. */
8c37241b
JJ		 2577 relocation = htab->sgotplt->output_section->vma
2578 + htab->sgotplt->output_offset;
b34976b6 2579 unresolved_reloc = FALSE;
252b5132
RH		 2580 break;
2581
2582 case R_386_PLT32:
2583 /* Relocation is to the entry for this symbol in the
2584 procedure linkage table. */
2585
dd5724d5 2586 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 2587 without using the procedure linkage table. */
252b5132
RH		 2588 if (h == NULL)
2589 break;
2590
dd5724d5 2591 if (h->plt.offset == (bfd_vma) -1
6725bdbf 2592 || htab->splt == NULL)
252b5132
RH		 2593 {
2594 /* We didn't make a PLT entry for this symbol. This
83be169b
AM		 2595 happens when statically linking PIC code, or when
2596 using -Bsymbolic. */
252b5132
RH		 2597 break;
2598 }
2599
6725bdbf
AM		 2600 relocation = (htab->splt->output_section->vma
2601 + htab->splt->output_offset
252b5132 2602 + h->plt.offset);
b34976b6 2603 unresolved_reloc = FALSE;
252b5132
RH		 2604 break;
2605
2606 case R_386_32:
2607 case R_386_PC32:
f855931b 2608 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 2609 break;
2610
12d0ee4a 2611 if ((info->shared
ef5aade5
L		 2612 && (h == NULL
2613 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2614 || h->root.type != bfd_link_hash_undefweak)
12d0ee4a 2615 && (r_type != R_386_PC32
f6c52c13 2616 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM		 2617 || (ELIMINATE_COPY_RELOCS
2618 && !info->shared
12d0ee4a
AM		 2619 && h != NULL
2620 && h->dynindx != -1
f5385ebf
AM		 2621 && !h->non_got_ref
2622 && ((h->def_dynamic
2623 && !h->def_regular)
28d0b90e
AM		 2624 || h->root.type == bfd_link_hash_undefweak
2625 || h->root.type == bfd_link_hash_undefined)))
252b5132 2626 {
947216bf
AM		 2627 Elf_Internal_Rela outrel;
2628 bfd_byte *loc;
b34976b6 2629 bfd_boolean skip, relocate;
0c715baa 2630 asection *sreloc;
252b5132
RH		 2631
2632 /* When generating a shared object, these relocations
2633 are copied into the output file to be resolved at run
2634 time. */
2635
b34976b6
AM		 2636 skip = FALSE;
2637 relocate = FALSE;
252b5132 2638
c629eae0
JJ		 2639 outrel.r_offset =
2640 _bfd_elf_section_offset (output_bfd, info, input_section,
2641 rel->r_offset);
2642 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2643 skip = TRUE;
0bb2d96a 2644 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2645 skip = TRUE, relocate = TRUE;
252b5132
RH		 2646 outrel.r_offset += (input_section->output_section->vma
2647 + input_section->output_offset);
2648
2649 if (skip)
0bb2d96a 2650 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM		 2651 else if (h != NULL
2652 && h->dynindx != -1
2653 && (r_type == R_386_PC32
2654 || !info->shared
2655 || !info->symbolic
f5385ebf 2656 || !h->def_regular))
0bb2d96a 2657 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 2658 else
2659 {
5a15f56f 2660 /* This symbol is local, or marked to become local. */
b34976b6 2661 relocate = TRUE;
5a15f56f 2662 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH		 2663 }
2664
0c715baa
AM		 2665 sreloc = elf_section_data (input_section)->sreloc;
2666 if (sreloc == NULL)
2667 abort ();
2668
947216bf
AM		 2669 loc = sreloc->contents;
2670 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
0c715baa 2671 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132
RH		 2672
2673 /* If this reloc is against an external symbol, we do
2674 not want to fiddle with the addend. Otherwise, we
2675 need to include the symbol value so that it becomes
2676 an addend for the dynamic reloc. */
2677 if (! relocate)
2678 continue;
2679 }
252b5132
RH		 2680 break;
2681
37e55690
JJ		 2682 case R_386_TLS_IE:
2683 if (info->shared)
2684 {
947216bf
AM		 2685 Elf_Internal_Rela outrel;
2686 bfd_byte *loc;
37e55690 2687 asection *sreloc;
37e55690
JJ		 2688
2689 outrel.r_offset = rel->r_offset
2690 + input_section->output_section->vma
2691 + input_section->output_offset;
2692 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2693 sreloc = elf_section_data (input_section)->sreloc;
2694 if (sreloc == NULL)
2695 abort ();
947216bf
AM		 2696 loc = sreloc->contents;
2697 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 2698 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2699 }
2700 /* Fall through */
2701
13ae64f3 2702 case R_386_TLS_GD:
67a4f2b7
AO		 2703 case R_386_TLS_GOTDESC:
2704 case R_386_TLS_DESC_CALL:
13ae64f3 2705 case R_386_TLS_IE_32:
37e55690 2706 case R_386_TLS_GOTIE:
13ae64f3
JJ		 2707 r_type = elf_i386_tls_transition (info, r_type, h == NULL);
2708 tls_type = GOT_UNKNOWN;
2709 if (h == NULL && local_got_offsets)
2710 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
2711 else if (h != NULL)
2712 {
2713 tls_type = elf_i386_hash_entry(h)->tls_type;
cb878726
L		 2714 /* If we have both R_386_TLS_IE and R_386_TLS_GD,
2715 GOT_TLS_IE_BOTH should be used. */
2716 if ((tls_type & GOT_TLS_IE_MASK)
2717 == (GOT_TLS_IE_IE | GOT_TLS_IE_GD))
2718 tls_type = GOT_TLS_IE_BOTH;
2719 else
2720 tls_type &= GOT_TLS_MASK;
37e55690 2721 if (!info->shared && h->dynindx == -1 && (tls_type & GOT_TLS_IE))
13ae64f3
JJ		 2722 r_type = R_386_TLS_LE_32;
2723 }
37e55690
JJ		 2724 if (tls_type == GOT_TLS_IE)
2725 tls_type = GOT_TLS_IE_NEG;
67a4f2b7
AO		 2726 if (r_type == R_386_TLS_GD
2727 || r_type == R_386_TLS_GOTDESC
2728 || r_type == R_386_TLS_DESC_CALL)
37e55690
JJ		 2729 {
2730 if (tls_type == GOT_TLS_IE_POS)
2731 r_type = R_386_TLS_GOTIE;
2732 else if (tls_type & GOT_TLS_IE)
2733 r_type = R_386_TLS_IE_32;
2734 }
13ae64f3
JJ		 2735
2736 if (r_type == R_386_TLS_LE_32)
2737 {
82e51918 2738 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 2739 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
2740 {
2741 unsigned int val, type;
2742 bfd_vma roff;
2743
2744 /* GD->LE transition. */
2745 BFD_ASSERT (rel->r_offset >= 2);
2746 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2747 BFD_ASSERT (type == 0x8d || type == 0x04);
eea6121a 2748 BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
13ae64f3
JJ		 2749 BFD_ASSERT (bfd_get_8 (input_bfd,
2750 contents + rel->r_offset + 4)
2751 == 0xe8);
2752 BFD_ASSERT (rel + 1 < relend);
2753 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
2754 roff = rel->r_offset + 5;
2755 val = bfd_get_8 (input_bfd,
2756 contents + rel->r_offset - 1);
2757 if (type == 0x04)
2758 {
2759 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
2760 Change it into:
2761 movl %gs:0, %eax; subl $foo@tpoff, %eax
2762 (6 byte form of subl). */
2763 BFD_ASSERT (rel->r_offset >= 3);
2764 BFD_ASSERT (bfd_get_8 (input_bfd,
2765 contents + rel->r_offset - 3)
2766 == 0x8d);
2767 BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
2768 memcpy (contents + rel->r_offset - 3,
2769 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
2770 }
2771 else
2772 {
2773 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
eea6121a 2774 if (rel->r_offset + 10 <= input_section->size
13ae64f3
JJ		 2775 && bfd_get_8 (input_bfd,
2776 contents + rel->r_offset + 9) == 0x90)
2777 {
2778 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
2779 Change it into:
2780 movl %gs:0, %eax; subl $foo@tpoff, %eax
2781 (6 byte form of subl). */
2782 memcpy (contents + rel->r_offset - 2,
2783 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
2784 roff = rel->r_offset + 6;
2785 }
2786 else
2787 {
2788 /* leal foo(%reg), %eax; call ___tls_get_addr
2789 Change it into:
2790 movl %gs:0, %eax; subl $foo@tpoff, %eax
2791 (5 byte form of subl). */
2792 memcpy (contents + rel->r_offset - 2,
2793 "\x65\xa1\0\0\0\0\x2d\0\0\0", 11);
2794 }
2795 }
2796 bfd_put_32 (output_bfd, tpoff (info, relocation),
2797 contents + roff);
2798 /* Skip R_386_PLT32. */
2799 rel++;
2800 continue;
2801 }
67a4f2b7
AO		 2802 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
2803 {
2804 /* GDesc -> LE transition.
2805 It's originally something like:
2806 leal x@tlsdesc(%ebx), %eax
2807
2808 leal x@ntpoff, %eax
2809
2810 Registers other than %eax may be set up here. */
2811
2812 unsigned int val, type;
2813 bfd_vma roff;
2814
2815 /* First, make sure it's a leal adding ebx to a
2816 32-bit offset into any register, although it's
2817 probably almost always going to be eax. */
2818 roff = rel->r_offset;
2819 BFD_ASSERT (roff >= 2);
2820 type = bfd_get_8 (input_bfd, contents + roff - 2);
2821 BFD_ASSERT (type == 0x8d);
2822 val = bfd_get_8 (input_bfd, contents + roff - 1);
2823 BFD_ASSERT ((val & 0xc7) == 0x83);
2824 BFD_ASSERT (roff + 4 <= input_section->size);
2825
2826 /* Now modify the instruction as appropriate. */
2827 /* aoliva FIXME: remove the above and xor the byte
2828 below with 0x86. */
2829 bfd_put_8 (output_bfd, val ^ 0x86,
2830 contents + roff - 1);
2831 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2832 contents + roff);
2833 continue;
2834 }
2835 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
2836 {
2837 /* GDesc -> LE transition.
2838 It's originally:
2839 call *(%eax)
2840 Turn it into:
2841 nop; nop */
2842
2843 unsigned int val, type;
2844 bfd_vma roff;
2845
2846 /* First, make sure it's a call *(%eax). */
2847 roff = rel->r_offset;
2848 BFD_ASSERT (roff + 2 <= input_section->size);
2849 type = bfd_get_8 (input_bfd, contents + roff);
2850 BFD_ASSERT (type == 0xff);
2851 val = bfd_get_8 (input_bfd, contents + roff + 1);
2852 BFD_ASSERT (val == 0x10);
2853
2854 /* Now modify the instruction as appropriate. */
2855 bfd_put_8 (output_bfd, 0x90, contents + roff);
2856 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
2857 continue;
2858 }
37e55690 2859 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3
JJ		 2860 {
2861 unsigned int val, type;
2862
2863 /* IE->LE transition:
37e55690
JJ		 2864 Originally it can be one of:
2865 movl foo, %eax
2866 movl foo, %reg
2867 addl foo, %reg
2868 We change it into:
2869 movl $foo, %eax
2870 movl $foo, %reg
2871 addl $foo, %reg. */
2872 BFD_ASSERT (rel->r_offset >= 1);
2873 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
eea6121a 2874 BFD_ASSERT (rel->r_offset + 4 <= input_section->size);
37e55690
JJ		 2875 if (val == 0xa1)
2876 {
2877 /* movl foo, %eax. */
55fd94b0
AM		 2878 bfd_put_8 (output_bfd, 0xb8,
2879 contents + rel->r_offset - 1);
37e55690 2880 }
299bf759 2881 else
37e55690 2882 {
299bf759 2883 BFD_ASSERT (rel->r_offset >= 2);
55fd94b0
AM		 2884 type = bfd_get_8 (input_bfd,
2885 contents + rel->r_offset - 2);
299bf759 2886 switch (type)
26e41594 2887 {
299bf759
L		 2888 case 0x8b:
2889 /* movl */
2890 BFD_ASSERT ((val & 0xc7) == 0x05);
2891 bfd_put_8 (output_bfd, 0xc7,
2892 contents + rel->r_offset - 2);
2893 bfd_put_8 (output_bfd,
2894 0xc0 | ((val >> 3) & 7),
2895 contents + rel->r_offset - 1);
2896 break;
2897 case 0x03:
2898 /* addl */
2899 BFD_ASSERT ((val & 0xc7) == 0x05);
2900 bfd_put_8 (output_bfd, 0x81,
2901 contents + rel->r_offset - 2);
2902 bfd_put_8 (output_bfd,
2903 0xc0 | ((val >> 3) & 7),
2904 contents + rel->r_offset - 1);
2905 break;
2906 default:
2907 BFD_FAIL ();
2908 break;
26e41594 2909 }
37e55690 2910 }
37e55690
JJ		 2911 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2912 contents + rel->r_offset);
2913 continue;
2914 }
2915 else
2916 {
2917 unsigned int val, type;
2918
2919 /* {IE_32,GOTIE}->LE transition:
2920 Originally it can be one of:
13ae64f3 2921 subl foo(%reg1), %reg2
13ae64f3 2922 movl foo(%reg1), %reg2
37e55690 2923 addl foo(%reg1), %reg2
13ae64f3
JJ		 2924 We change it into:
2925 subl $foo, %reg2
37e55690
JJ		 2926 movl $foo, %reg2 (6 byte form)
2927 addl $foo, %reg2. */
13ae64f3
JJ		 2928 BFD_ASSERT (rel->r_offset >= 2);
2929 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2930 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
eea6121a 2931 BFD_ASSERT (rel->r_offset + 4 <= input_section->size);
37e55690 2932 BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4);
13ae64f3
JJ		 2933 if (type == 0x8b)
2934 {
2935 /* movl */
13ae64f3
JJ		 2936 bfd_put_8 (output_bfd, 0xc7,
2937 contents + rel->r_offset - 2);
2938 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2939 contents + rel->r_offset - 1);
2940 }
2941 else if (type == 0x2b)
2942 {
2943 /* subl */
13ae64f3
JJ		 2944 bfd_put_8 (output_bfd, 0x81,
2945 contents + rel->r_offset - 2);
2946 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
2947 contents + rel->r_offset - 1);
2948 }
37e55690
JJ		 2949 else if (type == 0x03)
2950 {
2951 /* addl */
2952 bfd_put_8 (output_bfd, 0x81,
2953 contents + rel->r_offset - 2);
2954 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2955 contents + rel->r_offset - 1);
2956 }
13ae64f3
JJ		 2957 else
2958 BFD_FAIL ();
37e55690
JJ		 2959 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
2960 bfd_put_32 (output_bfd, -tpoff (info, relocation),
2961 contents + rel->r_offset);
2962 else
2963 bfd_put_32 (output_bfd, tpoff (info, relocation),
2964 contents + rel->r_offset);
13ae64f3
JJ		 2965 continue;
2966 }
2967 }
2968
2969 if (htab->sgot == NULL)
2970 abort ();
2971
2972 if (h != NULL)
67a4f2b7
AO		 2973 {
2974 off = h->got.offset;
2975 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
2976 }
13ae64f3
JJ		 2977 else
2978 {
2979 if (local_got_offsets == NULL)
2980 abort ();
2981
2982 off = local_got_offsets[r_symndx];
67a4f2b7 2983 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ		 2984 }
2985
2986 if ((off & 1) != 0)
2987 off &= ~1;
26e41594 2988 else
13ae64f3 2989 {
947216bf
AM		 2990 Elf_Internal_Rela outrel;
2991 bfd_byte *loc;
13ae64f3 2992 int dr_type, indx;
67a4f2b7 2993 asection *sreloc;
13ae64f3
JJ		 2994
2995 if (htab->srelgot == NULL)
2996 abort ();
2997
67a4f2b7
AO		 2998 indx = h && h->dynindx != -1 ? h->dynindx : 0;
2999
3000 if (GOT_TLS_GDESC_P (tls_type))
3001 {
3002 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
3003 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
3004 <= htab->sgotplt->size);
3005 outrel.r_offset = (htab->sgotplt->output_section->vma
3006 + htab->sgotplt->output_offset
3007 + offplt
3008 + htab->sgotplt_jump_table_size);
3009 sreloc = htab->srelplt;
3010 loc = sreloc->contents;
5ae0bfb6
RS		 3011 loc += (htab->next_tls_desc_index++
3012 * sizeof (Elf32_External_Rel));
67a4f2b7
AO		 3013 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3014 <= sreloc->contents + sreloc->size);
3015 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3016 if (indx == 0)
3017 {
3018 BFD_ASSERT (! unresolved_reloc);
3019 bfd_put_32 (output_bfd,
3020 relocation - dtpoff_base (info),
3021 htab->sgotplt->contents + offplt
3022 + htab->sgotplt_jump_table_size + 4);
3023 }
3024 else
3025 {
3026 bfd_put_32 (output_bfd, 0,
3027 htab->sgotplt->contents + offplt
3028 + htab->sgotplt_jump_table_size + 4);
3029 }
3030 }
3031
3032 sreloc = htab->srelgot;
3033
13ae64f3
JJ		 3034 outrel.r_offset = (htab->sgot->output_section->vma
3035 + htab->sgot->output_offset + off);
3036
67a4f2b7 3037 if (GOT_TLS_GD_P (tls_type))
13ae64f3 3038 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO		 3039 else if (GOT_TLS_GDESC_P (tls_type))
3040 goto dr_done;
37e55690
JJ		 3041 else if (tls_type == GOT_TLS_IE_POS)
3042 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ		 3043 else
3044 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 3045
37e55690
JJ		 3046 if (dr_type == R_386_TLS_TPOFF && indx == 0)
3047 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
3048 htab->sgot->contents + off);
3049 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
c5c1f40c 3050 bfd_put_32 (output_bfd, dtpoff_base (info) - relocation,
c366c25e 3051 htab->sgot->contents + off);
67a4f2b7 3052 else if (dr_type != R_386_TLS_DESC)
c366c25e
JJ		 3053 bfd_put_32 (output_bfd, 0,
3054 htab->sgot->contents + off);
13ae64f3 3055 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7
AO		 3056
3057 loc = sreloc->contents;
3058 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3059 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3060 <= sreloc->contents + sreloc->size);
13ae64f3
JJ		 3061 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3062
67a4f2b7 3063 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ		 3064 {
3065 if (indx == 0)
3066 {
82e51918 3067 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ		 3068 bfd_put_32 (output_bfd,
3069 relocation - dtpoff_base (info),
3070 htab->sgot->contents + off + 4);
3071 }
3072 else
3073 {
3074 bfd_put_32 (output_bfd, 0,
3075 htab->sgot->contents + off + 4);
3076 outrel.r_info = ELF32_R_INFO (indx,
3077 R_386_TLS_DTPOFF32);
3078 outrel.r_offset += 4;
67a4f2b7 3079 sreloc->reloc_count++;
947216bf 3080 loc += sizeof (Elf32_External_Rel);
67a4f2b7
AO		 3081 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3082 <= sreloc->contents + sreloc->size);
947216bf 3083 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
13ae64f3
JJ		 3084 }
3085 }
37e55690
JJ		 3086 else if (tls_type == GOT_TLS_IE_BOTH)
3087 {
3088 bfd_put_32 (output_bfd,
3089 indx == 0 ? relocation - dtpoff_base (info) : 0,
3090 htab->sgot->contents + off + 4);
3091 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3092 outrel.r_offset += 4;
67a4f2b7 3093 sreloc->reloc_count++;
947216bf 3094 loc += sizeof (Elf32_External_Rel);
37e55690
JJ		 3095 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3096 }
13ae64f3 3097
67a4f2b7 3098 dr_done:
13ae64f3
JJ		 3099 if (h != NULL)
3100 h->got.offset |= 1;
3101 else
3102 local_got_offsets[r_symndx] |= 1;
3103 }
3104
67a4f2b7
AO		 3105 if (off >= (bfd_vma) -2
3106 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 3107 abort ();
67a4f2b7
AO		 3108 if (r_type == R_386_TLS_GOTDESC
3109 || r_type == R_386_TLS_DESC_CALL)
3110 {
3111 relocation = htab->sgotplt_jump_table_size + offplt;
3112 unresolved_reloc = FALSE;
3113 }
3114 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 3115 {
8c37241b
JJ		 3116 bfd_vma g_o_t = htab->sgotplt->output_section->vma
3117 + htab->sgotplt->output_offset;
3118 relocation = htab->sgot->output_section->vma
67a4f2b7 3119 + htab->sgot->output_offset + off - g_o_t;
37e55690
JJ		 3120 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
3121 && tls_type == GOT_TLS_IE_BOTH)
3122 relocation += 4;
3123 if (r_type == R_386_TLS_IE)
8c37241b 3124 relocation += g_o_t;
b34976b6 3125 unresolved_reloc = FALSE;
13ae64f3 3126 }
67a4f2b7 3127 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ		 3128 {
3129 unsigned int val, type;
3130 bfd_vma roff;
3131
3132 /* GD->IE transition. */
3133 BFD_ASSERT (rel->r_offset >= 2);
3134 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3135 BFD_ASSERT (type == 0x8d || type == 0x04);
eea6121a 3136 BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
13ae64f3
JJ		 3137 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
3138 == 0xe8);
3139 BFD_ASSERT (rel + 1 < relend);
3140 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
3141 roff = rel->r_offset - 3;
3142 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3143 if (type == 0x04)
3144 {
3145 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3146 Change it into:
3147 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
3148 BFD_ASSERT (rel->r_offset >= 3);
3149 BFD_ASSERT (bfd_get_8 (input_bfd,
3150 contents + rel->r_offset - 3)
3151 == 0x8d);
3152 BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
3153 val >>= 3;
3154 }
3155 else
3156 {
3157 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3158 Change it into:
3159 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
eea6121a 3160 BFD_ASSERT (rel->r_offset + 10 <= input_section->size);
13ae64f3
JJ		 3161 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
3162 BFD_ASSERT (bfd_get_8 (input_bfd,
3163 contents + rel->r_offset + 9)
3164 == 0x90);
3165 roff = rel->r_offset - 2;
3166 }
3167 memcpy (contents + roff,
3168 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
3169 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ		 3170 /* If foo is used only with foo@gotntpoff(%reg) and
3171 foo@indntpoff, but not with foo@gottpoff(%reg), change
3172 subl $foo@gottpoff(%reg), %eax
3173 into:
3174 addl $foo@gotntpoff(%reg), %eax. */
3175 if (r_type == R_386_TLS_GOTIE)
3176 {
3177 contents[roff + 6] = 0x03;
3178 if (tls_type == GOT_TLS_IE_BOTH)
3179 off += 4;
3180 }
8c37241b
JJ		 3181 bfd_put_32 (output_bfd,
3182 htab->sgot->output_section->vma
3183 + htab->sgot->output_offset + off
3184 - htab->sgotplt->output_section->vma
3185 - htab->sgotplt->output_offset,
13ae64f3
JJ		 3186 contents + roff + 8);
3187 /* Skip R_386_PLT32. */
3188 rel++;
3189 continue;
3190 }
67a4f2b7
AO		 3191 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3192 {
3193 /* GDesc -> IE transition.
3194 It's originally something like:
3195 leal x@tlsdesc(%ebx), %eax
3196
3197 Change it to:
3198 movl x@gotntpoff(%ebx), %eax # before nop; nop
3199 or:
3200 movl x@gottpoff(%ebx), %eax # before negl %eax
3201
3202 Registers other than %eax may be set up here. */
3203
3204 unsigned int val, type;
3205 bfd_vma roff;
3206
3207 /* First, make sure it's a leal adding ebx to a 32-bit
3208 offset into any register, although it's probably
3209 almost always going to be eax. */
3210 roff = rel->r_offset;
3211 BFD_ASSERT (roff >= 2);
3212 type = bfd_get_8 (input_bfd, contents + roff - 2);
3213 BFD_ASSERT (type == 0x8d);
3214 val = bfd_get_8 (input_bfd, contents + roff - 1);
3215 BFD_ASSERT ((val & 0xc7) == 0x83);
3216 BFD_ASSERT (roff + 4 <= input_section->size);
3217
3218 /* Now modify the instruction as appropriate. */
3219 /* To turn a leal into a movl in the form we use it, it
3220 suffices to change the first byte from 0x8d to 0x8b.
3221 aoliva FIXME: should we decide to keep the leal, all
3222 we have to do is remove the statement below, and
3223 adjust the relaxation of R_386_TLS_DESC_CALL. */
3224 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3225
3226 if (tls_type == GOT_TLS_IE_BOTH)
3227 off += 4;
3228
3229 bfd_put_32 (output_bfd,
3230 htab->sgot->output_section->vma
3231 + htab->sgot->output_offset + off
3232 - htab->sgotplt->output_section->vma
3233 - htab->sgotplt->output_offset,
3234 contents + roff);
3235 continue;
3236 }
3237 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3238 {
3239 /* GDesc -> IE transition.
3240 It's originally:
3241 call *(%eax)
3242
3243 Change it to:
3244 nop; nop
3245 or
3246 negl %eax
3247 depending on how we transformed the TLS_GOTDESC above.
3248 */
3249
3250 unsigned int val, type;
3251 bfd_vma roff;
3252
3253 /* First, make sure it's a call *(%eax). */
3254 roff = rel->r_offset;
3255 BFD_ASSERT (roff + 2 <= input_section->size);
3256 type = bfd_get_8 (input_bfd, contents + roff);
3257 BFD_ASSERT (type == 0xff);
3258 val = bfd_get_8 (input_bfd, contents + roff + 1);
3259 BFD_ASSERT (val == 0x10);
3260
3261 /* Now modify the instruction as appropriate. */
3262 if (tls_type != GOT_TLS_IE_NEG)
3263 {
3264 /* nop; nop */
3265 bfd_put_8 (output_bfd, 0x90, contents + roff);
3266 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3267 }
3268 else
3269 {
3270 /* negl %eax */
3271 bfd_put_8 (output_bfd, 0xf7, contents + roff);
3272 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
3273 }
3274
3275 continue;
3276 }
3277 else
3278 BFD_ASSERT (FALSE);
13ae64f3
JJ		 3279 break;
3280
3281 case R_386_TLS_LDM:
3282 if (! info->shared)
3283 {
3284 unsigned int val;
3285
3286 /* LD->LE transition:
3287 Ensure it is:
3288 leal foo(%reg), %eax; call ___tls_get_addr.
3289 We change it into:
3290 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
3291 BFD_ASSERT (rel->r_offset >= 2);
3292 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2)
3293 == 0x8d);
3294 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3295 BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
eea6121a 3296 BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
13ae64f3
JJ		 3297 BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
3298 == 0xe8);
3299 BFD_ASSERT (rel + 1 < relend);
3300 BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
3301 memcpy (contents + rel->r_offset - 2,
3302 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
3303 /* Skip R_386_PLT32. */
3304 rel++;
3305 continue;
3306 }
3307
3308 if (htab->sgot == NULL)
3309 abort ();
3310
3311 off = htab->tls_ldm_got.offset;
3312 if (off & 1)
3313 off &= ~1;
3314 else
3315 {
947216bf
AM		 3316 Elf_Internal_Rela outrel;
3317 bfd_byte *loc;
13ae64f3
JJ		 3318
3319 if (htab->srelgot == NULL)
3320 abort ();
3321
3322 outrel.r_offset = (htab->sgot->output_section->vma
3323 + htab->sgot->output_offset + off);
3324
3325 bfd_put_32 (output_bfd, 0,
3326 htab->sgot->contents + off);
3327 bfd_put_32 (output_bfd, 0,
3328 htab->sgot->contents + off + 4);
3329 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
947216bf
AM		 3330 loc = htab->srelgot->contents;
3331 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
13ae64f3
JJ		 3332 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3333 htab->tls_ldm_got.offset |= 1;
3334 }
8c37241b
JJ		 3335 relocation = htab->sgot->output_section->vma
3336 + htab->sgot->output_offset + off
3337 - htab->sgotplt->output_section->vma
3338 - htab->sgotplt->output_offset;
b34976b6 3339 unresolved_reloc = FALSE;
13ae64f3
JJ		 3340 break;
3341
3342 case R_386_TLS_LDO_32:
a45bb67d 3343 if (info->shared || (input_section->flags & SEC_CODE) == 0)
13ae64f3
JJ		 3344 relocation -= dtpoff_base (info);
3345 else
3346 /* When converting LDO to LE, we must negate. */
3347 relocation = -tpoff (info, relocation);
3348 break;
3349
3350 case R_386_TLS_LE_32:
13ae64f3 3351 case R_386_TLS_LE:
37e55690
JJ		 3352 if (info->shared)
3353 {
947216bf 3354 Elf_Internal_Rela outrel;
37e55690 3355 asection *sreloc;
947216bf 3356 bfd_byte *loc;
37e55690
JJ		 3357 int indx;
3358
3359 outrel.r_offset = rel->r_offset
3360 + input_section->output_section->vma
3361 + input_section->output_offset;
3362 if (h != NULL && h->dynindx != -1)
3363 indx = h->dynindx;
3364 else
3365 indx = 0;
3366 if (r_type == R_386_TLS_LE_32)
3367 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
3368 else
3369 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3370 sreloc = elf_section_data (input_section)->sreloc;
3371 if (sreloc == NULL)
3372 abort ();
947216bf
AM		 3373 loc = sreloc->contents;
3374 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
37e55690
JJ		 3375 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3376 if (indx)
3377 continue;
3378 else if (r_type == R_386_TLS_LE_32)
3379 relocation = dtpoff_base (info) - relocation;
3380 else
3381 relocation -= dtpoff_base (info);
3382 }
3383 else if (r_type == R_386_TLS_LE_32)
3384 relocation = tpoff (info, relocation);
3385 else
3386 relocation = -tpoff (info, relocation);
13ae64f3
JJ		 3387 break;
3388
252b5132
RH		 3389 default:
3390 break;
3391 }
3392
239e1f3a
AM		 3393 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3394 because such sections are not SEC_ALLOC and thus ld.so will
3395 not process them. */
8c694914 3396 if (unresolved_reloc
239e1f3a 3397 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 3398 && h->def_dynamic))
6a30718d
JJ		 3399 {
3400 (*_bfd_error_handler)
843fe662 3401 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM		 3402 input_bfd,
3403 input_section,
6a30718d 3404 (long) rel->r_offset,
843fe662 3405 howto->name,
6a30718d 3406 h->root.root.string);
b34976b6 3407 return FALSE;
6a30718d 3408 }
83be169b 3409
252b5132
RH		 3410 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3411 contents, rel->r_offset,
55fd94b0 3412 relocation, 0);
252b5132 3413
cf5c0c5b 3414 if (r != bfd_reloc_ok)
252b5132 3415 {
cf5c0c5b 3416 const char *name;
ffb2e45b 3417
cf5c0c5b
AM		 3418 if (h != NULL)
3419 name = h->root.root.string;
3420 else
3421 {
3422 name = bfd_elf_string_from_elf_section (input_bfd,
3423 symtab_hdr->sh_link,
3424 sym->st_name);
3425 if (name == NULL)
b34976b6 3426 return FALSE;
cf5c0c5b
AM		 3427 if (*name == '\0')
3428 name = bfd_section_name (input_bfd, sec);
3429 }
ffb2e45b 3430
cf5c0c5b
AM		 3431 if (r == bfd_reloc_overflow)
3432 {
cf5c0c5b 3433 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3434 (info, (h ? &h->root : NULL), name, howto->name,
3435 (bfd_vma) 0, input_bfd, input_section,
3436 rel->r_offset)))
b34976b6 3437 return FALSE;
cf5c0c5b
AM		 3438 }
3439 else
3440 {
3441 (*_bfd_error_handler)
d003868e
AM		 3442 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3443 input_bfd, input_section,
cf5c0c5b 3444 (long) rel->r_offset, name, (int) r);
b34976b6 3445 return FALSE;
cf5c0c5b 3446 }
252b5132
RH		 3447 }
3448 }
3449
b34976b6 3450 return TRUE;
252b5132
RH		 3451}
3452
3453/* Finish up dynamic symbol handling. We set the contents of various
3454 dynamic sections here. */
3455
b34976b6 3456static bfd_boolean
55fd94b0
AM		 3457elf_i386_finish_dynamic_symbol (bfd *output_bfd,
3458 struct bfd_link_info *info,
3459 struct elf_link_hash_entry *h,
3460 Elf_Internal_Sym *sym)
252b5132 3461{
6725bdbf 3462 struct elf_i386_link_hash_table *htab;
252b5132 3463
6725bdbf 3464 htab = elf_i386_hash_table (info);
252b5132
RH		 3465
3466 if (h->plt.offset != (bfd_vma) -1)
3467 {
252b5132
RH		 3468 bfd_vma plt_index;
3469 bfd_vma got_offset;
947216bf
AM		 3470 Elf_Internal_Rela rel;
3471 bfd_byte *loc;
252b5132
RH		 3472
3473 /* This symbol has an entry in the procedure linkage table. Set
3474 it up. */
3475
ffb2e45b
AM		 3476 if (h->dynindx == -1
3477 || htab->splt == NULL
3478 || htab->sgotplt == NULL
3479 || htab->srelplt == NULL)
3480 abort ();
252b5132
RH		 3481
3482 /* Get the index in the procedure linkage table which
3483 corresponds to this symbol. This is the index of this symbol
3484 in all the symbols for which we are making plt entries. The
3485 first entry in the procedure linkage table is reserved. */
3486 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3487
3488 /* Get the offset into the .got table of the entry that
3489 corresponds to this function. Each .got entry is 4 bytes.
3490 The first three are reserved. */
3491 got_offset = (plt_index + 3) * 4;
3492
3493 /* Fill in the entry in the procedure linkage table. */
3494 if (! info->shared)
3495 {
6725bdbf 3496 memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry,
252b5132
RH		 3497 PLT_ENTRY_SIZE);
3498 bfd_put_32 (output_bfd,
6725bdbf
AM		 3499 (htab->sgotplt->output_section->vma
3500 + htab->sgotplt->output_offset
252b5132 3501 + got_offset),
6725bdbf 3502 htab->splt->contents + h->plt.offset + 2);
eac338cf
PB		 3503
3504 if (htab->is_vxworks)
3505 {
3506 int s, k, reloc_index;
3507
3508 /* Create the R_386_32 relocation referencing the GOT
3509 for this PLT entry. */
3510
3511 /* S: Current slot number (zero-based). */
3512 s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3513 /* K: Number of relocations for PLTResolve. */
3514 if (info->shared)
3515 k = PLTRESOLVE_RELOCS_SHLIB;
3516 else
3517 k = PLTRESOLVE_RELOCS;
3518 /* Skip the PLTresolve relocations, and the relocations for
3519 the other PLT slots. */
3520 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
3521 loc = (htab->srelplt2->contents + reloc_index
3522 * sizeof (Elf32_External_Rel));
3523
3524 rel.r_offset = (htab->splt->output_section->vma
3525 + htab->splt->output_offset
3526 + h->plt.offset + 2),
7325306f 3527 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3528 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
3529
3530 /* Create the R_386_32 relocation referencing the beginning of
3531 the PLT for this GOT entry. */
3532 rel.r_offset = (htab->sgotplt->output_section->vma
3533 + htab->sgotplt->output_offset
3534 + got_offset);
7325306f 3535 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 3536 bfd_elf32_swap_reloc_out (output_bfd, &rel,
3537 loc + sizeof (Elf32_External_Rel));
3538 }
252b5132
RH		 3539 }
3540 else
3541 {
6725bdbf 3542 memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry,
252b5132
RH		 3543 PLT_ENTRY_SIZE);
3544 bfd_put_32 (output_bfd, got_offset,
6725bdbf 3545 htab->splt->contents + h->plt.offset + 2);
252b5132
RH		 3546 }
3547
3548 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
6725bdbf 3549 htab->splt->contents + h->plt.offset + 7);
252b5132 3550 bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
6725bdbf 3551 htab->splt->contents + h->plt.offset + 12);
252b5132
RH		 3552
3553 /* Fill in the entry in the global offset table. */
3554 bfd_put_32 (output_bfd,
6725bdbf
AM		 3555 (htab->splt->output_section->vma
3556 + htab->splt->output_offset
252b5132
RH		 3557 + h->plt.offset
3558 + 6),
6725bdbf 3559 htab->sgotplt->contents + got_offset);
252b5132
RH		 3560
3561 /* Fill in the entry in the .rel.plt section. */
6725bdbf
AM		 3562 rel.r_offset = (htab->sgotplt->output_section->vma
3563 + htab->sgotplt->output_offset
252b5132
RH		 3564 + got_offset);
3565 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
947216bf 3566 loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 3567 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 3568
f5385ebf 3569 if (!h->def_regular)
252b5132
RH		 3570 {
3571 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ		 3572 the .plt section. Leave the value if there were any
3573 relocations where pointer equality matters (this is a clue
51b64d56
AM		 3574 for the dynamic linker, to make function pointer
3575 comparisons work between an application and shared
c6585bbb
JJ		 3576 library), otherwise set it to zero. If a function is only
3577 called from a binary, there is no need to slow down
3578 shared libraries because of that. */
252b5132 3579 sym->st_shndx = SHN_UNDEF;
f5385ebf 3580 if (!h->pointer_equality_needed)
c6585bbb 3581 sym->st_value = 0;
252b5132
RH		 3582 }
3583 }
3584
13ae64f3 3585 if (h->got.offset != (bfd_vma) -1
67a4f2b7 3586 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 3587 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 3588 {
947216bf
AM		 3589 Elf_Internal_Rela rel;
3590 bfd_byte *loc;
252b5132
RH		 3591
3592 /* This symbol has an entry in the global offset table. Set it
3593 up. */
3594
ffb2e45b
AM		 3595 if (htab->sgot == NULL || htab->srelgot == NULL)
3596 abort ();
252b5132 3597
6725bdbf
AM		 3598 rel.r_offset = (htab->sgot->output_section->vma
3599 + htab->sgot->output_offset
dc810e39 3600 + (h->got.offset & ~(bfd_vma) 1));
252b5132 3601
dd5724d5
AM		 3602 /* If this is a static link, or it is a -Bsymbolic link and the
3603 symbol is defined locally or was forced to be local because
3604 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH		 3605 The entry in the global offset table will already have been
3606 initialized in the relocate_section function. */
6725bdbf 3607 if (info->shared
586119b3 3608 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 3609 {
6725bdbf 3610 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM		 3611 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3612 }
252b5132
RH		 3613 else
3614 {
dd5724d5 3615 BFD_ASSERT((h->got.offset & 1) == 0);
6725bdbf
AM		 3616 bfd_put_32 (output_bfd, (bfd_vma) 0,
3617 htab->sgot->contents + h->got.offset);
252b5132
RH		 3618 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
3619 }
3620
947216bf
AM		 3621 loc = htab->srelgot->contents;
3622 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3623 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 3624 }
3625
f5385ebf 3626 if (h->needs_copy)
252b5132 3627 {
947216bf
AM		 3628 Elf_Internal_Rela rel;
3629 bfd_byte *loc;
252b5132
RH		 3630
3631 /* This symbol needs a copy reloc. Set it up. */
3632
ffb2e45b
AM		 3633 if (h->dynindx == -1
3634 || (h->root.type != bfd_link_hash_defined
3635 && h->root.type != bfd_link_hash_defweak)
3636 || htab->srelbss == NULL)
3637 abort ();
252b5132
RH		 3638
3639 rel.r_offset = (h->root.u.def.value
3640 + h->root.u.def.section->output_section->vma
3641 + h->root.u.def.section->output_offset);
3642 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
947216bf
AM		 3643 loc = htab->srelbss->contents;
3644 loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
0ac8d2ca 3645 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 3646 }
3647
eac338cf
PB		 3648 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.
3649 On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it
3650 is relative to the ".got" section. */
252b5132 3651 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
22edb2f1 3652 || (!htab->is_vxworks && h == htab->elf.hgot))
252b5132
RH		 3653 sym->st_shndx = SHN_ABS;
3654
b34976b6 3655 return TRUE;
252b5132
RH		 3656}
3657
38701953
AM		 3658/* Used to decide how to sort relocs in an optimal manner for the
3659 dynamic linker, before writing them out. */
3660
3661static enum elf_reloc_type_class
55fd94b0 3662elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
38701953 3663{
55fd94b0 3664 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM		 3665 {
3666 case R_386_RELATIVE:
3667 return reloc_class_relative;
3668 case R_386_JUMP_SLOT:
3669 return reloc_class_plt;
3670 case R_386_COPY:
3671 return reloc_class_copy;
3672 default:
3673 return reloc_class_normal;
3674 }
3675}
3676
252b5132
RH		 3677/* Finish up the dynamic sections. */
3678
b34976b6 3679static bfd_boolean
55fd94b0
AM		 3680elf_i386_finish_dynamic_sections (bfd *output_bfd,
3681 struct bfd_link_info *info)
252b5132 3682{
6725bdbf 3683 struct elf_i386_link_hash_table *htab;
252b5132 3684 bfd *dynobj;
252b5132
RH		 3685 asection *sdyn;
3686
6725bdbf 3687 htab = elf_i386_hash_table (info);
ebe50bae 3688 dynobj = htab->elf.dynobj;
252b5132
RH		 3689 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3690
ebe50bae 3691 if (htab->elf.dynamic_sections_created)
252b5132 3692 {
252b5132
RH		 3693 Elf32_External_Dyn *dyncon, *dynconend;
3694
ffb2e45b
AM		 3695 if (sdyn == NULL || htab->sgot == NULL)
3696 abort ();
252b5132
RH		 3697
3698 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 3699 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH		 3700 for (; dyncon < dynconend; dyncon++)
3701 {
3702 Elf_Internal_Dyn dyn;
51b64d56 3703 asection *s;
252b5132
RH		 3704
3705 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3706
3707 switch (dyn.d_tag)
3708 {
3709 default:
0ac8d2ca 3710 continue;
252b5132
RH		 3711
3712 case DT_PLTGOT:
8c37241b
JJ		 3713 s = htab->sgotplt;
3714 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM		 3715 break;
3716
252b5132 3717 case DT_JMPREL:
6348e046
AM		 3718 s = htab->srelplt;
3719 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH		 3720 break;
3721
3722 case DT_PLTRELSZ:
6348e046 3723 s = htab->srelplt;
eea6121a 3724 dyn.d_un.d_val = s->size;
252b5132
RH		 3725 break;
3726
3727 case DT_RELSZ:
3728 /* My reading of the SVR4 ABI indicates that the
3729 procedure linkage table relocs (DT_JMPREL) should be
3730 included in the overall relocs (DT_REL). This is
3731 what Solaris does. However, UnixWare can not handle
3732 that case. Therefore, we override the DT_RELSZ entry
6348e046
AM		 3733 here to make it not include the JMPREL relocs. */
3734 s = htab->srelplt;
3735 if (s == NULL)
3736 continue;
eea6121a 3737 dyn.d_un.d_val -= s->size;
6348e046
AM		 3738 break;
3739
3740 case DT_REL:
3741 /* We may not be using the standard ELF linker script.
3742 If .rel.plt is the first .rel section, we adjust
3743 DT_REL to not include it. */
3744 s = htab->srelplt;
3745 if (s == NULL)
3746 continue;
3747 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
3748 continue;
eea6121a 3749 dyn.d_un.d_ptr += s->size;
252b5132
RH		 3750 break;
3751 }
0ac8d2ca
AM		 3752
3753 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 3754 }
3755
3756 /* Fill in the first entry in the procedure linkage table. */
eea6121a 3757 if (htab->splt && htab->splt->size > 0)
252b5132
RH		 3758 {
3759 if (info->shared)
eac338cf
PB		 3760 {
3761 memcpy (htab->splt->contents, elf_i386_pic_plt0_entry,
3762 sizeof (elf_i386_pic_plt0_entry));
3763 memset (htab->splt->contents + sizeof (elf_i386_pic_plt0_entry),
3764 htab->plt0_pad_byte,
3765 PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry));
3766 }
252b5132
RH		 3767 else
3768 {
eac338cf
PB		 3769 memcpy (htab->splt->contents, elf_i386_plt0_entry,
3770 sizeof(elf_i386_plt0_entry));
3771 memset (htab->splt->contents + sizeof (elf_i386_plt0_entry),
3772 htab->plt0_pad_byte,
3773 PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry));
252b5132 3774 bfd_put_32 (output_bfd,
6725bdbf
AM		 3775 (htab->sgotplt->output_section->vma
3776 + htab->sgotplt->output_offset
3777 + 4),
3778 htab->splt->contents + 2);
252b5132 3779 bfd_put_32 (output_bfd,
6725bdbf
AM		 3780 (htab->sgotplt->output_section->vma
3781 + htab->sgotplt->output_offset
3782 + 8),
3783 htab->splt->contents + 8);
eac338cf
PB		 3784
3785 if (htab->is_vxworks)
3786 {
3787 Elf_Internal_Rela rel;
7325306f 3788
eac338cf
PB		 3789 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
3790 On IA32 we use REL relocations so the addend goes in
3791 the PLT directly. */
3792 rel.r_offset = (htab->splt->output_section->vma
3793 + htab->splt->output_offset
3794 + 2);
7325306f 3795 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3796 bfd_elf32_swap_reloc_out (output_bfd, &rel,
3797 htab->srelplt2->contents);
3798 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
3799 rel.r_offset = (htab->splt->output_section->vma
3800 + htab->splt->output_offset
3801 + 8);
7325306f 3802 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3803 bfd_elf32_swap_reloc_out (output_bfd, &rel,
3804 htab->srelplt2->contents +
3805 sizeof (Elf32_External_Rel));
3806 }
252b5132
RH		 3807 }
3808
3809 /* UnixWare sets the entsize of .plt to 4, although that doesn't
3810 really seem like the right value. */
6725bdbf
AM		 3811 elf_section_data (htab->splt->output_section)
3812 ->this_hdr.sh_entsize = 4;
eac338cf
PB		 3813
3814 /* Correct the .rel.plt.unloaded relocations. */
3815 if (htab->is_vxworks && !info->shared)
3816 {
3817 int num_plts = (htab->splt->size / PLT_ENTRY_SIZE) - 1;
4c9b0de6 3818 unsigned char *p;
eac338cf
PB		 3819
3820 p = htab->srelplt2->contents;
3821 if (info->shared)
3822 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
3823 else
3824 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
3825
3826 for (; num_plts; num_plts--)
3827 {
3828 Elf_Internal_Rela rel;
3829 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 3830 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB		 3831 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
3832 p += sizeof (Elf32_External_Rel);
3833
3834 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 3835 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB		 3836 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
3837 p += sizeof (Elf32_External_Rel);
3838 }
3839 }
252b5132
RH		 3840 }
3841 }
3842
12d0ee4a 3843 if (htab->sgotplt)
252b5132 3844 {
12d0ee4a 3845 /* Fill in the first three entries in the global offset table. */
eea6121a 3846 if (htab->sgotplt->size > 0)
12d0ee4a
AM		 3847 {
3848 bfd_put_32 (output_bfd,
55fd94b0 3849 (sdyn == NULL ? 0
12d0ee4a
AM		 3850 : sdyn->output_section->vma + sdyn->output_offset),
3851 htab->sgotplt->contents);
55fd94b0
AM		 3852 bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 4);
3853 bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 8);
12d0ee4a 3854 }
252b5132 3855
12d0ee4a
AM		 3856 elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4;
3857 }
8c37241b 3858
eea6121a 3859 if (htab->sgot && htab->sgot->size > 0)
8c37241b
JJ		 3860 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
3861
b34976b6 3862 return TRUE;
252b5132
RH		 3863}
3864
4c45e5c9
JJ		 3865/* Return address for Ith PLT stub in section PLT, for relocation REL
3866 or (bfd_vma) -1 if it should not be included. */
3867
3868static bfd_vma
3869elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
3870 const arelent *rel ATTRIBUTE_UNUSED)
3871{
3872 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
3873}
3874
3875
252b5132
RH		 3876#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
3877#define TARGET_LITTLE_NAME "elf32-i386"
3878#define ELF_ARCH bfd_arch_i386
3879#define ELF_MACHINE_CODE EM_386
3880#define ELF_MAXPAGESIZE 0x1000
252b5132
RH		 3881
3882#define elf_backend_can_gc_sections 1
51b64d56 3883#define elf_backend_can_refcount 1
252b5132
RH		 3884#define elf_backend_want_got_plt 1
3885#define elf_backend_plt_readonly 1
3886#define elf_backend_want_plt_sym 0
3887#define elf_backend_got_header_size 12
252b5132 3888
8c29f035
AM		 3889/* Support RELA for objdump of prelink objects. */
3890#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM		 3891#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
3892
13ae64f3 3893#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 3894
dd5724d5
AM		 3895#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
3896#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
3897#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
3898
3899#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
3900#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 3901#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 3902#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 3903#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM		 3904#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
3905#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
3906#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
3907#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ		 3908#define elf_backend_grok_prstatus elf_i386_grok_prstatus
3909#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 3910#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM		 3911#define elf_backend_relocate_section elf_i386_relocate_section
3912#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 3913#define elf_backend_always_size_sections elf_i386_always_size_sections
4c45e5c9 3914#define elf_backend_plt_sym_val elf_i386_plt_sym_val
dd5724d5 3915
252b5132 3916#include "elf32-target.h"
2bc3c89a
AM		 3917
3918/* FreeBSD support. */
3919
3920#undef TARGET_LITTLE_SYM
3921#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
3922#undef TARGET_LITTLE_NAME
3923#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
3924
3925/* The kernel recognizes executables as valid only if they carry a
3926 "FreeBSD" label in the ELF header. So we put this label on all
3927 executables and (for simplicity) also all other object files. */
3928
2bc3c89a 3929static void
55fd94b0
AM		 3930elf_i386_post_process_headers (bfd *abfd,
3931 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2bc3c89a
AM		 3932{
3933 Elf_Internal_Ehdr *i_ehdrp;
3934
3935 i_ehdrp = elf_elfheader (abfd);
3936
3937 /* Put an ABI label supported by FreeBSD >= 4.1. */
3938 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD;
3939#ifdef OLD_FREEBSD_ABI_LABEL
3940 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
3941 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 3942#endif
2bc3c89a
AM		 3943}
3944
3945#undef elf_backend_post_process_headers
571fe01f
NC		 3946#define elf_backend_post_process_headers elf_i386_post_process_headers
3947#undef elf32_bed
3948#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a
AM		 3949
3950#include "elf32-target.h"
eac338cf
PB		 3951
3952/* VxWorks support. */
3953
3954#undef TARGET_LITTLE_SYM
3955#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
3956#undef TARGET_LITTLE_NAME
3957#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
3958
3959
3960/* Like elf_i386_link_hash_table_create but with tweaks for VxWorks. */
3961
3962static struct bfd_link_hash_table *
3963elf_i386_vxworks_link_hash_table_create (bfd *abfd)
3964{
3965 struct bfd_link_hash_table *ret;
3966 struct elf_i386_link_hash_table *htab;
3967
3968 ret = elf_i386_link_hash_table_create (abfd);
3969 if (ret)
3970 {
3971 htab = (struct elf_i386_link_hash_table *) ret;
3972 htab->is_vxworks = 1;
3973 htab->plt0_pad_byte = 0x90;
3974 }
3975
3976 return ret;
3977}
3978
3979
eac338cf
PB		 3980#undef elf_backend_post_process_headers
3981#undef bfd_elf32_bfd_link_hash_table_create
3982#define bfd_elf32_bfd_link_hash_table_create \
3983 elf_i386_vxworks_link_hash_table_create
3984#undef elf_backend_add_symbol_hook
3985#define elf_backend_add_symbol_hook \
3986 elf_vxworks_add_symbol_hook
3987#undef elf_backend_link_output_symbol_hook
3988#define elf_backend_link_output_symbol_hook \
9c72ff84 3989 elf_vxworks_link_output_symbol_hook
eac338cf
PB		 3990#undef elf_backend_emit_relocs
3991#define elf_backend_emit_relocs elf_vxworks_emit_relocs
3992#undef elf_backend_final_write_processing
3993#define elf_backend_final_write_processing \
3994 elf_vxworks_final_write_processing
3995
3996/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
3997 define it. */
3998#undef elf_backend_want_plt_sym
3999#define elf_backend_want_plt_sym 1
4000
4001#undef elf32_bed
4002#define elf32_bed elf32_i386_vxworks_bed
4003
4004#include "elf32-target.h"
GDB Binutils - Deliverables
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