bfd/elf-ifunc.c: Remove unused function _bfd_elf_create_ifunc_dyn_reloc.
[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,
61315175 3 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
9f973f28 4 Free Software Foundation, Inc.
252b5132 5
571fe01f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
571fe01f
NC
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
571fe01f 11 (at your option) any later version.
252b5132 12
571fe01f
NC
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
571fe01f
NC
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
cd123cb7
NC
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
252b5132 22
252b5132 23#include "sysdep.h"
3db64b00 24#include "bfd.h"
252b5132
RH
25#include "bfdlink.h"
26#include "libbfd.h"
27#include "elf-bfd.h"
5a68afcf 28#include "elf-nacl.h"
eac338cf 29#include "elf-vxworks.h"
142411ca 30#include "bfd_stdint.h"
c25bc9fc
L
31#include "objalloc.h"
32#include "hashtab.h"
e41b3a13 33#include "dwarf2.h"
252b5132 34
55fd94b0
AM
35/* 386 uses REL relocations instead of RELA. */
36#define USE_REL 1
252b5132
RH
37
38#include "elf/i386.h"
39
40static reloc_howto_type elf_howto_table[]=
41{
b34976b6 42 HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
1b452ec6 43 bfd_elf_generic_reloc, "R_386_NONE",
b34976b6
AM
44 TRUE, 0x00000000, 0x00000000, FALSE),
45 HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 46 bfd_elf_generic_reloc, "R_386_32",
b34976b6
AM
47 TRUE, 0xffffffff, 0xffffffff, FALSE),
48 HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 49 bfd_elf_generic_reloc, "R_386_PC32",
b34976b6
AM
50 TRUE, 0xffffffff, 0xffffffff, TRUE),
51 HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 52 bfd_elf_generic_reloc, "R_386_GOT32",
b34976b6
AM
53 TRUE, 0xffffffff, 0xffffffff, FALSE),
54 HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 55 bfd_elf_generic_reloc, "R_386_PLT32",
b34976b6
AM
56 TRUE, 0xffffffff, 0xffffffff, TRUE),
57 HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 58 bfd_elf_generic_reloc, "R_386_COPY",
b34976b6
AM
59 TRUE, 0xffffffff, 0xffffffff, FALSE),
60 HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 61 bfd_elf_generic_reloc, "R_386_GLOB_DAT",
b34976b6
AM
62 TRUE, 0xffffffff, 0xffffffff, FALSE),
63 HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 64 bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
b34976b6
AM
65 TRUE, 0xffffffff, 0xffffffff, FALSE),
66 HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 67 bfd_elf_generic_reloc, "R_386_RELATIVE",
b34976b6
AM
68 TRUE, 0xffffffff, 0xffffffff, FALSE),
69 HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
1b452ec6 70 bfd_elf_generic_reloc, "R_386_GOTOFF",
b34976b6
AM
71 TRUE, 0xffffffff, 0xffffffff, FALSE),
72 HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
1b452ec6 73 bfd_elf_generic_reloc, "R_386_GOTPC",
b34976b6 74 TRUE, 0xffffffff, 0xffffffff, TRUE),
1b452ec6 75
dc47f327
AM
76 /* We have a gap in the reloc numbers here.
77 R_386_standard counts the number up to this point, and
78 R_386_ext_offset is the value to subtract from a reloc type of
79 R_386_16 thru R_386_PC8 to form an index into this table. */
55fd94b0
AM
80#define R_386_standard (R_386_GOTPC + 1)
81#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
1b452ec6 82
37e55690 83 /* These relocs are a GNU extension. */
b34976b6 84 HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 85 bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
b34976b6
AM
86 TRUE, 0xffffffff, 0xffffffff, FALSE),
87 HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 88 bfd_elf_generic_reloc, "R_386_TLS_IE",
b34976b6
AM
89 TRUE, 0xffffffff, 0xffffffff, FALSE),
90 HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
37e55690 91 bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
b34976b6
AM
92 TRUE, 0xffffffff, 0xffffffff, FALSE),
93 HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 94 bfd_elf_generic_reloc, "R_386_TLS_LE",
b34976b6
AM
95 TRUE, 0xffffffff, 0xffffffff, FALSE),
96 HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 97 bfd_elf_generic_reloc, "R_386_TLS_GD",
b34976b6
AM
98 TRUE, 0xffffffff, 0xffffffff, FALSE),
99 HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 100 bfd_elf_generic_reloc, "R_386_TLS_LDM",
b34976b6
AM
101 TRUE, 0xffffffff, 0xffffffff, FALSE),
102 HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
1b452ec6 103 bfd_elf_generic_reloc, "R_386_16",
b34976b6 104 TRUE, 0xffff, 0xffff, FALSE),
b0360d8c 105 HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
1b452ec6 106 bfd_elf_generic_reloc, "R_386_PC16",
b34976b6
AM
107 TRUE, 0xffff, 0xffff, TRUE),
108 HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
1b452ec6 109 bfd_elf_generic_reloc, "R_386_8",
b34976b6
AM
110 TRUE, 0xff, 0xff, FALSE),
111 HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
1b452ec6 112 bfd_elf_generic_reloc, "R_386_PC8",
b34976b6 113 TRUE, 0xff, 0xff, TRUE),
dc47f327 114
55fd94b0
AM
115#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
116#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
13ae64f3 117 /* These are common with Solaris TLS implementation. */
b34976b6 118 HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 119 bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
b34976b6
AM
120 TRUE, 0xffffffff, 0xffffffff, FALSE),
121 HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 122 bfd_elf_generic_reloc, "R_386_TLS_IE_32",
b34976b6
AM
123 TRUE, 0xffffffff, 0xffffffff, FALSE),
124 HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 125 bfd_elf_generic_reloc, "R_386_TLS_LE_32",
b34976b6
AM
126 TRUE, 0xffffffff, 0xffffffff, FALSE),
127 HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 128 bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
b34976b6
AM
129 TRUE, 0xffffffff, 0xffffffff, FALSE),
130 HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 131 bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
b34976b6
AM
132 TRUE, 0xffffffff, 0xffffffff, FALSE),
133 HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
13ae64f3 134 bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
b34976b6 135 TRUE, 0xffffffff, 0xffffffff, FALSE),
1788fc08
L
136 HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
137 bfd_elf_generic_reloc, "R_386_SIZE32",
138 TRUE, 0xffffffff, 0xffffffff, FALSE),
67a4f2b7
AO
139 HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
140 bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
141 TRUE, 0xffffffff, 0xffffffff, FALSE),
142 HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
143 bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
144 FALSE, 0, 0, FALSE),
145 HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
146 bfd_elf_generic_reloc, "R_386_TLS_DESC",
147 TRUE, 0xffffffff, 0xffffffff, FALSE),
cbe950e9
L
148 HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
149 bfd_elf_generic_reloc, "R_386_IRELATIVE",
150 TRUE, 0xffffffff, 0xffffffff, FALSE),
13ae64f3
JJ
151
152 /* Another gap. */
cbe950e9
L
153#define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset)
154#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative)
252b5132
RH
155
156/* GNU extension to record C++ vtable hierarchy. */
252b5132
RH
157 HOWTO (R_386_GNU_VTINHERIT, /* type */
158 0, /* rightshift */
159 2, /* size (0 = byte, 1 = short, 2 = long) */
160 0, /* bitsize */
b34976b6 161 FALSE, /* pc_relative */
252b5132
RH
162 0, /* bitpos */
163 complain_overflow_dont, /* complain_on_overflow */
164 NULL, /* special_function */
165 "R_386_GNU_VTINHERIT", /* name */
b34976b6 166 FALSE, /* partial_inplace */
252b5132
RH
167 0, /* src_mask */
168 0, /* dst_mask */
b34976b6 169 FALSE), /* pcrel_offset */
252b5132
RH
170
171/* GNU extension to record C++ vtable member usage. */
252b5132
RH
172 HOWTO (R_386_GNU_VTENTRY, /* type */
173 0, /* rightshift */
174 2, /* size (0 = byte, 1 = short, 2 = long) */
175 0, /* bitsize */
b34976b6 176 FALSE, /* pc_relative */
252b5132
RH
177 0, /* bitpos */
178 complain_overflow_dont, /* complain_on_overflow */
179 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
180 "R_386_GNU_VTENTRY", /* name */
b34976b6 181 FALSE, /* partial_inplace */
252b5132
RH
182 0, /* src_mask */
183 0, /* dst_mask */
b34976b6 184 FALSE) /* pcrel_offset */
dc47f327 185
55fd94b0 186#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
dc47f327
AM
187
188};
189
252b5132 190#ifdef DEBUG_GEN_RELOC
55fd94b0
AM
191#define TRACE(str) \
192 fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
252b5132
RH
193#else
194#define TRACE(str)
195#endif
196
197static reloc_howto_type *
55fd94b0
AM
198elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
199 bfd_reloc_code_real_type code)
252b5132
RH
200{
201 switch (code)
202 {
203 case BFD_RELOC_NONE:
204 TRACE ("BFD_RELOC_NONE");
55fd94b0 205 return &elf_howto_table[R_386_NONE];
252b5132
RH
206
207 case BFD_RELOC_32:
208 TRACE ("BFD_RELOC_32");
55fd94b0 209 return &elf_howto_table[R_386_32];
252b5132
RH
210
211 case BFD_RELOC_CTOR:
212 TRACE ("BFD_RELOC_CTOR");
55fd94b0 213 return &elf_howto_table[R_386_32];
252b5132
RH
214
215 case BFD_RELOC_32_PCREL:
216 TRACE ("BFD_RELOC_PC32");
55fd94b0 217 return &elf_howto_table[R_386_PC32];
252b5132
RH
218
219 case BFD_RELOC_386_GOT32:
220 TRACE ("BFD_RELOC_386_GOT32");
55fd94b0 221 return &elf_howto_table[R_386_GOT32];
252b5132
RH
222
223 case BFD_RELOC_386_PLT32:
224 TRACE ("BFD_RELOC_386_PLT32");
55fd94b0 225 return &elf_howto_table[R_386_PLT32];
252b5132
RH
226
227 case BFD_RELOC_386_COPY:
228 TRACE ("BFD_RELOC_386_COPY");
55fd94b0 229 return &elf_howto_table[R_386_COPY];
252b5132
RH
230
231 case BFD_RELOC_386_GLOB_DAT:
232 TRACE ("BFD_RELOC_386_GLOB_DAT");
55fd94b0 233 return &elf_howto_table[R_386_GLOB_DAT];
252b5132
RH
234
235 case BFD_RELOC_386_JUMP_SLOT:
236 TRACE ("BFD_RELOC_386_JUMP_SLOT");
55fd94b0 237 return &elf_howto_table[R_386_JUMP_SLOT];
252b5132
RH
238
239 case BFD_RELOC_386_RELATIVE:
240 TRACE ("BFD_RELOC_386_RELATIVE");
55fd94b0 241 return &elf_howto_table[R_386_RELATIVE];
252b5132
RH
242
243 case BFD_RELOC_386_GOTOFF:
244 TRACE ("BFD_RELOC_386_GOTOFF");
55fd94b0 245 return &elf_howto_table[R_386_GOTOFF];
252b5132
RH
246
247 case BFD_RELOC_386_GOTPC:
248 TRACE ("BFD_RELOC_386_GOTPC");
55fd94b0 249 return &elf_howto_table[R_386_GOTPC];
252b5132 250
37e55690
JJ
251 /* These relocs are a GNU extension. */
252 case BFD_RELOC_386_TLS_TPOFF:
253 TRACE ("BFD_RELOC_386_TLS_TPOFF");
55fd94b0 254 return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
37e55690
JJ
255
256 case BFD_RELOC_386_TLS_IE:
257 TRACE ("BFD_RELOC_386_TLS_IE");
55fd94b0 258 return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
37e55690
JJ
259
260 case BFD_RELOC_386_TLS_GOTIE:
261 TRACE ("BFD_RELOC_386_TLS_GOTIE");
55fd94b0 262 return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
37e55690 263
13ae64f3
JJ
264 case BFD_RELOC_386_TLS_LE:
265 TRACE ("BFD_RELOC_386_TLS_LE");
55fd94b0 266 return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
13ae64f3
JJ
267
268 case BFD_RELOC_386_TLS_GD:
269 TRACE ("BFD_RELOC_386_TLS_GD");
55fd94b0 270 return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
13ae64f3
JJ
271
272 case BFD_RELOC_386_TLS_LDM:
273 TRACE ("BFD_RELOC_386_TLS_LDM");
55fd94b0 274 return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
13ae64f3 275
252b5132
RH
276 case BFD_RELOC_16:
277 TRACE ("BFD_RELOC_16");
55fd94b0 278 return &elf_howto_table[R_386_16 - R_386_ext_offset];
252b5132
RH
279
280 case BFD_RELOC_16_PCREL:
281 TRACE ("BFD_RELOC_16_PCREL");
55fd94b0 282 return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
252b5132
RH
283
284 case BFD_RELOC_8:
285 TRACE ("BFD_RELOC_8");
55fd94b0 286 return &elf_howto_table[R_386_8 - R_386_ext_offset];
252b5132
RH
287
288 case BFD_RELOC_8_PCREL:
289 TRACE ("BFD_RELOC_8_PCREL");
55fd94b0 290 return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
252b5132 291
13ae64f3
JJ
292 /* Common with Sun TLS implementation. */
293 case BFD_RELOC_386_TLS_LDO_32:
294 TRACE ("BFD_RELOC_386_TLS_LDO_32");
55fd94b0 295 return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
13ae64f3
JJ
296
297 case BFD_RELOC_386_TLS_IE_32:
298 TRACE ("BFD_RELOC_386_TLS_IE_32");
55fd94b0 299 return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
13ae64f3
JJ
300
301 case BFD_RELOC_386_TLS_LE_32:
302 TRACE ("BFD_RELOC_386_TLS_LE_32");
55fd94b0 303 return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
13ae64f3
JJ
304
305 case BFD_RELOC_386_TLS_DTPMOD32:
306 TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
55fd94b0 307 return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
13ae64f3
JJ
308
309 case BFD_RELOC_386_TLS_DTPOFF32:
310 TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
55fd94b0 311 return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
13ae64f3
JJ
312
313 case BFD_RELOC_386_TLS_TPOFF32:
314 TRACE ("BFD_RELOC_386_TLS_TPOFF32");
55fd94b0 315 return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
13ae64f3 316
1788fc08
L
317 case BFD_RELOC_SIZE32:
318 TRACE ("BFD_RELOC_SIZE32");
319 return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset];
320
67a4f2b7
AO
321 case BFD_RELOC_386_TLS_GOTDESC:
322 TRACE ("BFD_RELOC_386_TLS_GOTDESC");
323 return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
324
325 case BFD_RELOC_386_TLS_DESC_CALL:
326 TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
327 return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
328
329 case BFD_RELOC_386_TLS_DESC:
330 TRACE ("BFD_RELOC_386_TLS_DESC");
331 return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
332
cbe950e9
L
333 case BFD_RELOC_386_IRELATIVE:
334 TRACE ("BFD_RELOC_386_IRELATIVE");
2a750708 335 return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
cbe950e9 336
252b5132
RH
337 case BFD_RELOC_VTABLE_INHERIT:
338 TRACE ("BFD_RELOC_VTABLE_INHERIT");
55fd94b0 339 return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
252b5132
RH
340
341 case BFD_RELOC_VTABLE_ENTRY:
342 TRACE ("BFD_RELOC_VTABLE_ENTRY");
55fd94b0 343 return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
252b5132
RH
344
345 default:
346 break;
347 }
348
349 TRACE ("Unknown");
350 return 0;
351}
352
157090f7
AM
353static reloc_howto_type *
354elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
355 const char *r_name)
356{
357 unsigned int i;
358
359 for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
360 if (elf_howto_table[i].name != NULL
361 && strcasecmp (elf_howto_table[i].name, r_name) == 0)
362 return &elf_howto_table[i];
363
364 return NULL;
365}
366
142411ca
L
367static reloc_howto_type *
368elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
252b5132 369{
dc47f327
AM
370 unsigned int indx;
371
372 if ((indx = r_type) >= R_386_standard
373 && ((indx = r_type - R_386_ext_offset) - R_386_standard
374 >= R_386_ext - R_386_standard)
13ae64f3 375 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9
L
376 >= R_386_irelative - R_386_ext)
377 && ((indx = r_type - R_386_vt_offset) - R_386_irelative
378 >= R_386_vt - R_386_irelative))
252b5132 379 {
d003868e
AM
380 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
381 abfd, (int) r_type);
55fd94b0 382 indx = R_386_NONE;
252b5132 383 }
142411ca
L
384 BFD_ASSERT (elf_howto_table [indx].type == r_type);
385 return &elf_howto_table[indx];
386}
387
388static void
389elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
390 arelent *cache_ptr,
391 Elf_Internal_Rela *dst)
392{
393 unsigned int r_type = ELF32_R_TYPE (dst->r_info);
394 cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
252b5132
RH
395}
396
397/* Return whether a symbol name implies a local label. The UnixWare
398 2.1 cc generates temporary symbols that start with .X, so we
399 recognize them here. FIXME: do other SVR4 compilers also use .X?.
400 If so, we should move the .X recognition into
401 _bfd_elf_is_local_label_name. */
402
b34976b6 403static bfd_boolean
55fd94b0 404elf_i386_is_local_label_name (bfd *abfd, const char *name)
252b5132
RH
405{
406 if (name[0] == '.' && name[1] == 'X')
b34976b6 407 return TRUE;
252b5132
RH
408
409 return _bfd_elf_is_local_label_name (abfd, name);
410}
411\f
38701953 412/* Support for core dump NOTE sections. */
61adc1a4 413
b34976b6 414static bfd_boolean
55fd94b0 415elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
38701953
AM
416{
417 int offset;
eea6121a 418 size_t size;
38701953 419
61adc1a4 420 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 421 {
61adc1a4
NC
422 int pr_version = bfd_get_32 (abfd, note->descdata);
423
424 if (pr_version != 1)
425 return FALSE;
426
427 /* pr_cursig */
228e534f 428 elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20);
61adc1a4
NC
429
430 /* pr_pid */
228e534f 431 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
61adc1a4
NC
432
433 /* pr_reg */
434 offset = 28;
eea6121a 435 size = bfd_get_32 (abfd, note->descdata + 8);
61adc1a4
NC
436 }
437 else
438 {
439 switch (note->descsz)
440 {
441 default:
442 return FALSE;
38701953 443
61adc1a4
NC
444 case 144: /* Linux/i386 */
445 /* pr_cursig */
228e534f 446 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
38701953 447
61adc1a4 448 /* pr_pid */
228e534f 449 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
38701953 450
61adc1a4
NC
451 /* pr_reg */
452 offset = 72;
eea6121a 453 size = 68;
38701953 454
61adc1a4
NC
455 break;
456 }
38701953
AM
457 }
458
459 /* Make a ".reg/999" section. */
460 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 461 size, note->descpos + offset);
38701953
AM
462}
463
b34976b6 464static bfd_boolean
55fd94b0 465elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
38701953 466{
61adc1a4 467 if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
38701953 468 {
61adc1a4
NC
469 int pr_version = bfd_get_32 (abfd, note->descdata);
470
471 if (pr_version != 1)
b34976b6 472 return FALSE;
38701953 473
228e534f 474 elf_tdata (abfd)->core->program
61adc1a4 475 = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
228e534f 476 elf_tdata (abfd)->core->command
61adc1a4
NC
477 = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
478 }
479 else
480 {
481 switch (note->descsz)
482 {
483 default:
484 return FALSE;
485
486 case 124: /* Linux/i386 elf_prpsinfo. */
228e534f 487 elf_tdata (abfd)->core->pid
261b8d08 488 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 489 elf_tdata (abfd)->core->program
61adc1a4 490 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 491 elf_tdata (abfd)->core->command
61adc1a4
NC
492 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
493 }
38701953
AM
494 }
495
496 /* Note that for some reason, a spurious space is tacked
497 onto the end of the args in some (at least one anyway)
498 implementations, so strip it off if it exists. */
38701953 499 {
228e534f 500 char *command = elf_tdata (abfd)->core->command;
38701953
AM
501 int n = strlen (command);
502
503 if (0 < n && command[n - 1] == ' ')
504 command[n - 1] = '\0';
505 }
506
b34976b6 507 return TRUE;
38701953
AM
508}
509\f
510/* Functions for the i386 ELF linker.
511
512 In order to gain some understanding of code in this file without
513 knowing all the intricate details of the linker, note the
514 following:
515
516 Functions named elf_i386_* are called by external routines, other
517 functions are only called locally. elf_i386_* functions appear
518 in this file more or less in the order in which they are called
519 from external routines. eg. elf_i386_check_relocs is called
520 early in the link process, elf_i386_finish_dynamic_sections is
521 one of the last functions. */
522
252b5132
RH
523
524/* The name of the dynamic interpreter. This is put in the .interp
525 section. */
526
527#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
528
a23b6845
AM
529/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
530 copying dynamic variables from a shared lib into an app's dynbss
531 section, and instead use a dynamic relocation to point into the
532 shared lib. */
533#define ELIMINATE_COPY_RELOCS 1
534
252b5132
RH
535/* The size in bytes of an entry in the procedure linkage table. */
536
537#define PLT_ENTRY_SIZE 16
538
539/* The first entry in an absolute procedure linkage table looks like
eac338cf
PB
540 this. See the SVR4 ABI i386 supplement to see how this works.
541 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 542
eac338cf 543static const bfd_byte elf_i386_plt0_entry[12] =
252b5132
RH
544{
545 0xff, 0x35, /* pushl contents of address */
546 0, 0, 0, 0, /* replaced with address of .got + 4. */
547 0xff, 0x25, /* jmp indirect */
eac338cf 548 0, 0, 0, 0 /* replaced with address of .got + 8. */
252b5132
RH
549};
550
551/* Subsequent entries in an absolute procedure linkage table look like
552 this. */
553
554static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
555{
556 0xff, 0x25, /* jmp indirect */
557 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
558 0x68, /* pushl immediate */
559 0, 0, 0, 0, /* replaced with offset into relocation table. */
560 0xe9, /* jmp relative */
561 0, 0, 0, 0 /* replaced with offset to start of .plt. */
562};
563
eac338cf
PB
564/* The first entry in a PIC procedure linkage table look like this.
565 Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */
252b5132 566
eac338cf 567static const bfd_byte elf_i386_pic_plt0_entry[12] =
252b5132
RH
568{
569 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */
eac338cf 570 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */
252b5132
RH
571};
572
573/* Subsequent entries in a PIC procedure linkage table look like this. */
574
575static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
576{
577 0xff, 0xa3, /* jmp *offset(%ebx) */
578 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
579 0x68, /* pushl immediate */
580 0, 0, 0, 0, /* replaced with offset into relocation table. */
581 0xe9, /* jmp relative */
582 0, 0, 0, 0 /* replaced with offset to start of .plt. */
583};
584
e41b3a13
JJ
585/* .eh_frame covering the .plt section. */
586
587static const bfd_byte elf_i386_eh_frame_plt[] =
588{
589#define PLT_CIE_LENGTH 20
590#define PLT_FDE_LENGTH 36
591#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
592#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
593 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
594 0, 0, 0, 0, /* CIE ID */
595 1, /* CIE version */
596 'z', 'R', 0, /* Augmentation string */
597 1, /* Code alignment factor */
598 0x7c, /* Data alignment factor */
599 8, /* Return address column */
600 1, /* Augmentation size */
601 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
602 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
603 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
604 DW_CFA_nop, DW_CFA_nop,
605
606 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
607 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
608 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
609 0, 0, 0, 0, /* .plt size goes here */
610 0, /* Augmentation size */
611 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
612 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
613 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
614 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
615 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
616 11, /* Block length */
617 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
618 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
619 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
28ede8be 620 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
e41b3a13
JJ
621 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
622};
623
25e762b9
RM
624struct elf_i386_plt_layout
625{
626 /* The first entry in an absolute procedure linkage table looks like this. */
627 const bfd_byte *plt0_entry;
628 unsigned int plt0_entry_size;
629
630 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
631 unsigned int plt0_got1_offset;
632 unsigned int plt0_got2_offset;
633
634 /* Later entries in an absolute procedure linkage table look like this. */
635 const bfd_byte *plt_entry;
636 unsigned int plt_entry_size;
637
638 /* Offsets into plt_entry that are to be replaced with... */
639 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
640 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
641 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
642
643 /* Offset into plt_entry where the initial value of the GOT entry points. */
644 unsigned int plt_lazy_offset;
645
646 /* The first entry in a PIC procedure linkage table looks like this. */
647 const bfd_byte *pic_plt0_entry;
648
649 /* Subsequent entries in a PIC procedure linkage table look like this. */
650 const bfd_byte *pic_plt_entry;
651
652 /* .eh_frame covering the .plt section. */
653 const bfd_byte *eh_frame_plt;
654 unsigned int eh_frame_plt_size;
655};
656
657#define GET_PLT_ENTRY_SIZE(abfd) \
658 get_elf_i386_backend_data (abfd)->plt->plt_entry_size
659
660/* These are the standard parameters. */
661static const struct elf_i386_plt_layout elf_i386_plt =
662 {
663 elf_i386_plt0_entry, /* plt0_entry */
664 sizeof (elf_i386_plt0_entry), /* plt0_entry_size */
665 2, /* plt0_got1_offset */
666 8, /* plt0_got2_offset */
667 elf_i386_plt_entry, /* plt_entry */
668 PLT_ENTRY_SIZE, /* plt_entry_size */
669 2, /* plt_got_offset */
670 7, /* plt_reloc_offset */
671 12, /* plt_plt_offset */
672 6, /* plt_lazy_offset */
673 elf_i386_pic_plt0_entry, /* pic_plt0_entry */
674 elf_i386_pic_plt_entry, /* pic_plt_entry */
675 elf_i386_eh_frame_plt, /* eh_frame_plt */
676 sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */
677 };
678\f
679
eac338cf
PB
680/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
681 for the PLTResolve stub and then for each PLT entry. */
682#define PLTRESOLVE_RELOCS_SHLIB 0
683#define PLTRESOLVE_RELOCS 2
684#define PLT_NON_JUMP_SLOT_RELOCS 2
685
23209a78
RM
686/* Architecture-specific backend data for i386. */
687
688struct elf_i386_backend_data
689{
25e762b9
RM
690 /* Parameters describing PLT generation. */
691 const struct elf_i386_plt_layout *plt;
692
23209a78
RM
693 /* Value used to fill the unused bytes of the first PLT entry. */
694 bfd_byte plt0_pad_byte;
695
696 /* True if the target system is VxWorks. */
697 int is_vxworks;
698};
699
700#define get_elf_i386_backend_data(abfd) \
701 ((const struct elf_i386_backend_data *) \
702 get_elf_backend_data (abfd)->arch_data)
703
704/* These are the standard parameters. */
705static const struct elf_i386_backend_data elf_i386_arch_bed =
706 {
25e762b9 707 &elf_i386_plt, /* plt */
23209a78
RM
708 0, /* plt0_pad_byte */
709 0, /* is_vxworks */
710 };
711
712#define elf_backend_arch_data &elf_i386_arch_bed
713
252b5132
RH
714/* i386 ELF linker hash entry. */
715
716struct elf_i386_link_hash_entry
717{
ebe50bae 718 struct elf_link_hash_entry elf;
252b5132 719
0c715baa 720 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 721 struct elf_dyn_relocs *dyn_relocs;
13ae64f3 722
37e55690
JJ
723#define GOT_UNKNOWN 0
724#define GOT_NORMAL 1
725#define GOT_TLS_GD 2
726#define GOT_TLS_IE 4
727#define GOT_TLS_IE_POS 5
728#define GOT_TLS_IE_NEG 6
729#define GOT_TLS_IE_BOTH 7
67a4f2b7
AO
730#define GOT_TLS_GDESC 8
731#define GOT_TLS_GD_BOTH_P(type) \
732 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
733#define GOT_TLS_GD_P(type) \
734 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
735#define GOT_TLS_GDESC_P(type) \
736 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
737#define GOT_TLS_GD_ANY_P(type) \
738 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
37e55690 739 unsigned char tls_type;
67a4f2b7
AO
740
741 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
742 starting at the end of the jump table. */
743 bfd_vma tlsdesc_got;
13ae64f3
JJ
744};
745
746#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
747
748struct elf_i386_obj_tdata
749{
750 struct elf_obj_tdata root;
751
752 /* tls_type for each local got entry. */
753 char *local_got_tls_type;
67a4f2b7
AO
754
755 /* GOTPLT entries for TLS descriptors. */
756 bfd_vma *local_tlsdesc_gotent;
252b5132
RH
757};
758
13ae64f3
JJ
759#define elf_i386_tdata(abfd) \
760 ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
761
762#define elf_i386_local_got_tls_type(abfd) \
763 (elf_i386_tdata (abfd)->local_got_tls_type)
764
67a4f2b7
AO
765#define elf_i386_local_tlsdesc_gotent(abfd) \
766 (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
767
0ffa91dd
NC
768#define is_i386_elf(bfd) \
769 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
770 && elf_tdata (bfd) != NULL \
4dfe6ac6 771 && elf_object_id (bfd) == I386_ELF_DATA)
0ffa91dd 772
b34976b6 773static bfd_boolean
55fd94b0 774elf_i386_mkobject (bfd *abfd)
13ae64f3 775{
0ffa91dd 776 return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
4dfe6ac6 777 I386_ELF_DATA);
13ae64f3 778}
cedb70c5 779
252b5132
RH
780/* i386 ELF linker hash table. */
781
782struct elf_i386_link_hash_table
783{
ebe50bae 784 struct elf_link_hash_table elf;
252b5132 785
6725bdbf 786 /* Short-cuts to get to dynamic linker sections. */
6725bdbf
AM
787 asection *sdynbss;
788 asection *srelbss;
e41b3a13 789 asection *plt_eh_frame;
9635fe29 790
4dfe6ac6
NC
791 union
792 {
13ae64f3
JJ
793 bfd_signed_vma refcount;
794 bfd_vma offset;
795 } tls_ldm_got;
796
67a4f2b7
AO
797 /* The amount of space used by the reserved portion of the sgotplt
798 section, plus whatever space is used by the jump slots. */
799 bfd_vma sgotplt_jump_table_size;
800
87d72d41
AM
801 /* Small local sym cache. */
802 struct sym_cache sym_cache;
9f03412a
AO
803
804 /* _TLS_MODULE_BASE_ symbol. */
805 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L
806
807 /* Used by local STT_GNU_IFUNC symbols. */
808 htab_t loc_hash_table;
4dfe6ac6
NC
809 void * loc_hash_memory;
810
811 /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
812 asection *srelplt2;
813
4dfe6ac6
NC
814 /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
815 bfd_vma next_tls_desc_index;
e1f98742
L
816
817 /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */
818 bfd_vma next_jump_slot_index;
819
820 /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
821 bfd_vma next_irelative_index;
6725bdbf 822};
252b5132
RH
823
824/* Get the i386 ELF linker hash table from a link_info structure. */
825
826#define elf_i386_hash_table(p) \
4dfe6ac6
NC
827 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
828 == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
252b5132 829
67a4f2b7 830#define elf_i386_compute_jump_table_size(htab) \
5ae0bfb6 831 ((htab)->next_tls_desc_index * 4)
67a4f2b7 832
252b5132
RH
833/* Create an entry in an i386 ELF linker hash table. */
834
835static struct bfd_hash_entry *
eb4ff4d6
L
836elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
837 struct bfd_hash_table *table,
838 const char *string)
252b5132 839{
252b5132
RH
840 /* Allocate the structure if it has not already been allocated by a
841 subclass. */
ebe50bae
AM
842 if (entry == NULL)
843 {
a50b1753
NC
844 entry = (struct bfd_hash_entry *)
845 bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
ebe50bae
AM
846 if (entry == NULL)
847 return entry;
848 }
252b5132
RH
849
850 /* Call the allocation method of the superclass. */
ebe50bae
AM
851 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
852 if (entry != NULL)
252b5132 853 {
ebe50bae
AM
854 struct elf_i386_link_hash_entry *eh;
855
856 eh = (struct elf_i386_link_hash_entry *) entry;
857 eh->dyn_relocs = NULL;
13ae64f3 858 eh->tls_type = GOT_UNKNOWN;
67a4f2b7 859 eh->tlsdesc_got = (bfd_vma) -1;
252b5132
RH
860 }
861
ebe50bae 862 return entry;
252b5132
RH
863}
864
c25bc9fc
L
865/* Compute a hash of a local hash entry. We use elf_link_hash_entry
866 for local symbol so that we can handle local STT_GNU_IFUNC symbols
867 as global symbol. We reuse indx and dynstr_index for local symbol
868 hash since they aren't used by global symbols in this backend. */
869
870static hashval_t
871elf_i386_local_htab_hash (const void *ptr)
872{
873 struct elf_link_hash_entry *h
874 = (struct elf_link_hash_entry *) ptr;
d2149d72 875 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L
876}
877
878/* Compare local hash entries. */
879
880static int
881elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
882{
883 struct elf_link_hash_entry *h1
884 = (struct elf_link_hash_entry *) ptr1;
885 struct elf_link_hash_entry *h2
886 = (struct elf_link_hash_entry *) ptr2;
887
888 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
889}
890
891/* Find and/or create a hash entry for local symbol. */
892
893static struct elf_link_hash_entry *
894elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
895 bfd *abfd, const Elf_Internal_Rela *rel,
896 bfd_boolean create)
897{
898 struct elf_i386_link_hash_entry e, *ret;
899 asection *sec = abfd->sections;
d2149d72
L
900 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
901 ELF32_R_SYM (rel->r_info));
c25bc9fc
L
902 void **slot;
903
904 e.elf.indx = sec->id;
905 e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
906 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
907 create ? INSERT : NO_INSERT);
908
909 if (!slot)
910 return NULL;
911
912 if (*slot)
913 {
914 ret = (struct elf_i386_link_hash_entry *) *slot;
915 return &ret->elf;
916 }
917
918 ret = (struct elf_i386_link_hash_entry *)
919 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
920 sizeof (struct elf_i386_link_hash_entry));
921 if (ret)
922 {
923 memset (ret, 0, sizeof (*ret));
924 ret->elf.indx = sec->id;
925 ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
926 ret->elf.dynindx = -1;
c25bc9fc
L
927 *slot = ret;
928 }
929 return &ret->elf;
930}
931
252b5132
RH
932/* Create an i386 ELF linker hash table. */
933
934static struct bfd_link_hash_table *
55fd94b0 935elf_i386_link_hash_table_create (bfd *abfd)
252b5132
RH
936{
937 struct elf_i386_link_hash_table *ret;
dc810e39 938 bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
252b5132 939
7bf52ea2 940 ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt);
ebe50bae 941 if (ret == NULL)
252b5132
RH
942 return NULL;
943
eb4ff4d6
L
944 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
945 elf_i386_link_hash_newfunc,
4dfe6ac6
NC
946 sizeof (struct elf_i386_link_hash_entry),
947 I386_ELF_DATA))
252b5132 948 {
e2d34d7d 949 free (ret);
252b5132
RH
950 return NULL;
951 }
952
c25bc9fc
L
953 ret->loc_hash_table = htab_try_create (1024,
954 elf_i386_local_htab_hash,
955 elf_i386_local_htab_eq,
956 NULL);
957 ret->loc_hash_memory = objalloc_create ();
958 if (!ret->loc_hash_table || !ret->loc_hash_memory)
959 {
960 free (ret);
961 return NULL;
962 }
963
ebe50bae 964 return &ret->elf.root;
252b5132
RH
965}
966
c25bc9fc
L
967/* Destroy an i386 ELF linker hash table. */
968
969static void
970elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash)
971{
972 struct elf_i386_link_hash_table *htab
973 = (struct elf_i386_link_hash_table *) hash;
974
975 if (htab->loc_hash_table)
976 htab_delete (htab->loc_hash_table);
977 if (htab->loc_hash_memory)
978 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
9f7c3e5e 979 _bfd_elf_link_hash_table_free (hash);
c25bc9fc
L
980}
981
6725bdbf
AM
982/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
983 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
984 hash table. */
985
b34976b6 986static bfd_boolean
55fd94b0 987elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
6725bdbf
AM
988{
989 struct elf_i386_link_hash_table *htab;
990
6725bdbf 991 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 992 return FALSE;
6725bdbf 993
6de2ae4a 994 htab = elf_i386_hash_table (info);
4dfe6ac6
NC
995 if (htab == NULL)
996 return FALSE;
997
3d4d4302 998 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
6725bdbf 999 if (!info->shared)
3d4d4302 1000 htab->srelbss = bfd_get_linker_section (dynobj, ".rel.bss");
6725bdbf 1001
6de2ae4a 1002 if (!htab->sdynbss
6725bdbf
AM
1003 || (!info->shared && !htab->srelbss))
1004 abort ();
1005
23209a78 1006 if (get_elf_i386_backend_data (dynobj)->is_vxworks
6de2ae4a
L
1007 && !elf_vxworks_create_dynamic_sections (dynobj, info,
1008 &htab->srelplt2))
711de32c 1009 return FALSE;
eac338cf 1010
e41b3a13 1011 if (!info->no_ld_generated_unwind_info
2fe0fd06 1012 && htab->plt_eh_frame == NULL
e4de50d4 1013 && htab->elf.splt != NULL)
e41b3a13 1014 {
bbf96e4e
L
1015 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1016 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1017 | SEC_LINKER_CREATED);
e41b3a13 1018 htab->plt_eh_frame
bbf96e4e 1019 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ
1020 if (htab->plt_eh_frame == NULL
1021 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
1022 return FALSE;
e41b3a13
JJ
1023 }
1024
b34976b6 1025 return TRUE;
6725bdbf
AM
1026}
1027
ebe50bae
AM
1028/* Copy the extra info we tack onto an elf_link_hash_entry. */
1029
51b64d56 1030static void
fcfa13d2 1031elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
55fd94b0
AM
1032 struct elf_link_hash_entry *dir,
1033 struct elf_link_hash_entry *ind)
ebe50bae
AM
1034{
1035 struct elf_i386_link_hash_entry *edir, *eind;
1036
1037 edir = (struct elf_i386_link_hash_entry *) dir;
1038 eind = (struct elf_i386_link_hash_entry *) ind;
1039
bbd7ec4a 1040 if (eind->dyn_relocs != NULL)
ebe50bae 1041 {
bbd7ec4a
AM
1042 if (edir->dyn_relocs != NULL)
1043 {
e03a8ed8
L
1044 struct elf_dyn_relocs **pp;
1045 struct elf_dyn_relocs *p;
bbd7ec4a 1046
fcfa13d2 1047 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM
1048 list. Merge any entries against the same section. */
1049 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1050 {
e03a8ed8 1051 struct elf_dyn_relocs *q;
bbd7ec4a
AM
1052
1053 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1054 if (q->sec == p->sec)
1055 {
1056 q->pc_count += p->pc_count;
1057 q->count += p->count;
1058 *pp = p->next;
1059 break;
1060 }
1061 if (q == NULL)
1062 pp = &p->next;
1063 }
1064 *pp = edir->dyn_relocs;
1065 }
1066
ebe50bae
AM
1067 edir->dyn_relocs = eind->dyn_relocs;
1068 eind->dyn_relocs = NULL;
1069 }
ebe50bae 1070
cd67d266
JJ
1071 if (ind->root.type == bfd_link_hash_indirect
1072 && dir->got.refcount <= 0)
1073 {
1074 edir->tls_type = eind->tls_type;
1075 eind->tls_type = GOT_UNKNOWN;
1076 }
81848ca0
AM
1077
1078 if (ELIMINATE_COPY_RELOCS
1079 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM
1080 && dir->dynamic_adjusted)
1081 {
1082 /* If called to transfer flags for a weakdef during processing
1083 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1084 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1085 dir->ref_dynamic |= ind->ref_dynamic;
1086 dir->ref_regular |= ind->ref_regular;
1087 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1088 dir->needs_plt |= ind->needs_plt;
1089 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1090 }
81848ca0 1091 else
fcfa13d2 1092 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
ebe50bae
AM
1093}
1094
142411ca
L
1095/* Return TRUE if the TLS access code sequence support transition
1096 from R_TYPE. */
1097
1098static bfd_boolean
1099elf_i386_check_tls_transition (bfd *abfd, asection *sec,
1100 bfd_byte *contents,
1101 Elf_Internal_Shdr *symtab_hdr,
1102 struct elf_link_hash_entry **sym_hashes,
1103 unsigned int r_type,
1104 const Elf_Internal_Rela *rel,
1105 const Elf_Internal_Rela *relend)
13ae64f3 1106{
142411ca
L
1107 unsigned int val, type;
1108 unsigned long r_symndx;
1109 struct elf_link_hash_entry *h;
1110 bfd_vma offset;
1111
1112 /* Get the section contents. */
1113 if (contents == NULL)
1114 {
1115 if (elf_section_data (sec)->this_hdr.contents != NULL)
1116 contents = elf_section_data (sec)->this_hdr.contents;
1117 else
1118 {
1119 /* FIXME: How to better handle error condition? */
1120 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1121 return FALSE;
13ae64f3 1122
142411ca
L
1123 /* Cache the section contents for elf_link_input_bfd. */
1124 elf_section_data (sec)->this_hdr.contents = contents;
1125 }
1126 }
1127
1128 offset = rel->r_offset;
13ae64f3 1129 switch (r_type)
142411ca
L
1130 {
1131 case R_386_TLS_GD:
1132 case R_386_TLS_LDM:
1133 if (offset < 2 || (rel + 1) >= relend)
1134 return FALSE;
1135
1136 type = bfd_get_8 (abfd, contents + offset - 2);
1137 if (r_type == R_386_TLS_GD)
1138 {
09e8c3bf 1139 /* Check transition from GD access model. Only
142411ca
L
1140 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1141 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1142 can transit to different access model. */
1143 if ((offset + 10) > sec->size ||
1144 (type != 0x8d && type != 0x04))
1145 return FALSE;
1146
1147 val = bfd_get_8 (abfd, contents + offset - 1);
1148 if (type == 0x04)
1149 {
1150 /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1151 if (offset < 3)
1152 return FALSE;
1153
1154 if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1155 return FALSE;
1156
1157 if ((val & 0xc7) != 0x05 || val == (4 << 3))
1158 return FALSE;
1159 }
1160 else
1161 {
1162 /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */
1163 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1164 return FALSE;
1165
1166 if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1167 return FALSE;
1168 }
1169 }
1170 else
1171 {
1172 /* Check transition from LD access model. Only
1173 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1174 can transit to different access model. */
1175 if (type != 0x8d || (offset + 9) > sec->size)
1176 return FALSE;
1177
1178 val = bfd_get_8 (abfd, contents + offset - 1);
1179 if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1180 return FALSE;
1181 }
1182
1183 if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1184 return FALSE;
1185
1186 r_symndx = ELF32_R_SYM (rel[1].r_info);
1187 if (r_symndx < symtab_hdr->sh_info)
1188 return FALSE;
1189
1190 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b
L
1191 /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1192 may be versioned. */
142411ca
L
1193 return (h != NULL
1194 && h->root.root.string != NULL
1195 && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1196 || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
c4fb387b
L
1197 && (strncmp (h->root.root.string, "___tls_get_addr",
1198 15) == 0));
142411ca
L
1199
1200 case R_386_TLS_IE:
1201 /* Check transition from IE access model:
1202 movl foo@indntpoff(%rip), %eax
1203 movl foo@indntpoff(%rip), %reg
1204 addl foo@indntpoff(%rip), %reg
1205 */
1206
1207 if (offset < 1 || (offset + 4) > sec->size)
1208 return FALSE;
1209
1210 /* Check "movl foo@tpoff(%rip), %eax" first. */
1211 val = bfd_get_8 (abfd, contents + offset - 1);
1212 if (val == 0xa1)
1213 return TRUE;
1214
1215 if (offset < 2)
1216 return FALSE;
1217
1218 /* Check movl|addl foo@tpoff(%rip), %reg. */
1219 type = bfd_get_8 (abfd, contents + offset - 2);
1220 return ((type == 0x8b || type == 0x03)
1221 && (val & 0xc7) == 0x05);
1222
1223 case R_386_TLS_GOTIE:
1224 case R_386_TLS_IE_32:
1225 /* Check transition from {IE_32,GOTIE} access model:
1226 subl foo@{tpoff,gontoff}(%reg1), %reg2
1227 movl foo@{tpoff,gontoff}(%reg1), %reg2
1228 addl foo@{tpoff,gontoff}(%reg1), %reg2
1229 */
1230
1231 if (offset < 2 || (offset + 4) > sec->size)
1232 return FALSE;
1233
1234 val = bfd_get_8 (abfd, contents + offset - 1);
1235 if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1236 return FALSE;
1237
1238 type = bfd_get_8 (abfd, contents + offset - 2);
1239 return type == 0x8b || type == 0x2b || type == 0x03;
1240
1241 case R_386_TLS_GOTDESC:
1242 /* Check transition from GDesc access model:
1243 leal x@tlsdesc(%ebx), %eax
1244
1245 Make sure it's a leal adding ebx to a 32-bit offset
1246 into any register, although it's probably almost always
1247 going to be eax. */
1248
1249 if (offset < 2 || (offset + 4) > sec->size)
1250 return FALSE;
1251
1252 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1253 return FALSE;
1254
1255 val = bfd_get_8 (abfd, contents + offset - 1);
1256 return (val & 0xc7) == 0x83;
1257
1258 case R_386_TLS_DESC_CALL:
1259 /* Check transition from GDesc access model:
1260 call *x@tlsdesc(%rax)
1261 */
1262 if (offset + 2 <= sec->size)
1263 {
1264 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM
1265 static const unsigned char call[] = { 0xff, 0x10 };
1266 return memcmp (contents + offset, call, 2) == 0;
142411ca
L
1267 }
1268
1269 return FALSE;
1270
1271 default:
1272 abort ();
1273 }
1274}
1275
1276/* Return TRUE if the TLS access transition is OK or no transition
1277 will be performed. Update R_TYPE if there is a transition. */
1278
1279static bfd_boolean
1280elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1281 asection *sec, bfd_byte *contents,
1282 Elf_Internal_Shdr *symtab_hdr,
1283 struct elf_link_hash_entry **sym_hashes,
1284 unsigned int *r_type, int tls_type,
1285 const Elf_Internal_Rela *rel,
1286 const Elf_Internal_Rela *relend,
4c544807
L
1287 struct elf_link_hash_entry *h,
1288 unsigned long r_symndx)
142411ca
L
1289{
1290 unsigned int from_type = *r_type;
1291 unsigned int to_type = from_type;
1292 bfd_boolean check = TRUE;
1293
bb1cb422
L
1294 /* Skip TLS transition for functions. */
1295 if (h != NULL
1296 && (h->type == STT_FUNC
1297 || h->type == STT_GNU_IFUNC))
1298 return TRUE;
1299
142411ca 1300 switch (from_type)
13ae64f3
JJ
1301 {
1302 case R_386_TLS_GD:
67a4f2b7
AO
1303 case R_386_TLS_GOTDESC:
1304 case R_386_TLS_DESC_CALL:
13ae64f3 1305 case R_386_TLS_IE_32:
37e55690
JJ
1306 case R_386_TLS_IE:
1307 case R_386_TLS_GOTIE:
1d85728f 1308 if (info->executable)
142411ca
L
1309 {
1310 if (h == NULL)
1311 to_type = R_386_TLS_LE_32;
1312 else if (from_type != R_386_TLS_IE
1313 && from_type != R_386_TLS_GOTIE)
1314 to_type = R_386_TLS_IE_32;
1315 }
1316
1317 /* When we are called from elf_i386_relocate_section, CONTENTS
1318 isn't NULL and there may be additional transitions based on
1319 TLS_TYPE. */
1320 if (contents != NULL)
1321 {
1322 unsigned int new_to_type = to_type;
1323
1d85728f 1324 if (info->executable
142411ca
L
1325 && h != NULL
1326 && h->dynindx == -1
1327 && (tls_type & GOT_TLS_IE))
1328 new_to_type = R_386_TLS_LE_32;
1329
1330 if (to_type == R_386_TLS_GD
1331 || to_type == R_386_TLS_GOTDESC
1332 || to_type == R_386_TLS_DESC_CALL)
1333 {
1334 if (tls_type == GOT_TLS_IE_POS)
1335 new_to_type = R_386_TLS_GOTIE;
1336 else if (tls_type & GOT_TLS_IE)
1337 new_to_type = R_386_TLS_IE_32;
1338 }
1339
1340 /* We checked the transition before when we were called from
1341 elf_i386_check_relocs. We only want to check the new
1342 transition which hasn't been checked before. */
1343 check = new_to_type != to_type && from_type == to_type;
1344 to_type = new_to_type;
1345 }
1346
1347 break;
1348
13ae64f3 1349 case R_386_TLS_LDM:
1d85728f 1350 if (info->executable)
142411ca
L
1351 to_type = R_386_TLS_LE_32;
1352 break;
1353
1354 default:
1355 return TRUE;
1356 }
1357
1358 /* Return TRUE if there is no transition. */
1359 if (from_type == to_type)
1360 return TRUE;
1361
1362 /* Check if the transition can be performed. */
1363 if (check
1364 && ! elf_i386_check_tls_transition (abfd, sec, contents,
1365 symtab_hdr, sym_hashes,
1366 from_type, rel, relend))
1367 {
2f629d23 1368 reloc_howto_type *from, *to;
4c544807 1369 const char *name;
142411ca
L
1370
1371 from = elf_i386_rtype_to_howto (abfd, from_type);
1372 to = elf_i386_rtype_to_howto (abfd, to_type);
1373
4c544807
L
1374 if (h)
1375 name = h->root.root.string;
1376 else
1377 {
4c544807 1378 struct elf_i386_link_hash_table *htab;
4dfe6ac6 1379
4c544807 1380 htab = elf_i386_hash_table (info);
4dfe6ac6
NC
1381 if (htab == NULL)
1382 name = "*unknown*";
1383 else
1384 {
1385 Elf_Internal_Sym *isym;
1386
1387 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1388 abfd, r_symndx);
1389 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1390 }
4c544807
L
1391 }
1392
142411ca
L
1393 (*_bfd_error_handler)
1394 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1395 "in section `%A' failed"),
4c544807 1396 abfd, sec, from->name, to->name, name,
142411ca
L
1397 (unsigned long) rel->r_offset);
1398 bfd_set_error (bfd_error_bad_value);
1399 return FALSE;
13ae64f3
JJ
1400 }
1401
142411ca
L
1402 *r_type = to_type;
1403 return TRUE;
13ae64f3
JJ
1404}
1405
252b5132 1406/* Look through the relocs for a section during the first phase, and
0ac8d2ca
AM
1407 calculate needed space in the global offset table, procedure linkage
1408 table, and dynamic reloc sections. */
252b5132 1409
b34976b6 1410static bfd_boolean
55fd94b0
AM
1411elf_i386_check_relocs (bfd *abfd,
1412 struct bfd_link_info *info,
1413 asection *sec,
1414 const Elf_Internal_Rela *relocs)
252b5132 1415{
6725bdbf 1416 struct elf_i386_link_hash_table *htab;
252b5132
RH
1417 Elf_Internal_Shdr *symtab_hdr;
1418 struct elf_link_hash_entry **sym_hashes;
252b5132
RH
1419 const Elf_Internal_Rela *rel;
1420 const Elf_Internal_Rela *rel_end;
252b5132
RH
1421 asection *sreloc;
1422
1049f94e 1423 if (info->relocatable)
b34976b6 1424 return TRUE;
252b5132 1425
0ffa91dd
NC
1426 BFD_ASSERT (is_i386_elf (abfd));
1427
6725bdbf 1428 htab = elf_i386_hash_table (info);
4dfe6ac6
NC
1429 if (htab == NULL)
1430 return FALSE;
1431
0ffa91dd 1432 symtab_hdr = &elf_symtab_hdr (abfd);
252b5132 1433 sym_hashes = elf_sym_hashes (abfd);
252b5132 1434
252b5132
RH
1435 sreloc = NULL;
1436
1437 rel_end = relocs + sec->reloc_count;
1438 for (rel = relocs; rel < rel_end; rel++)
1439 {
13ae64f3 1440 unsigned int r_type;
252b5132
RH
1441 unsigned long r_symndx;
1442 struct elf_link_hash_entry *h;
4c544807
L
1443 Elf_Internal_Sym *isym;
1444 const char *name;
06a6a421 1445 bfd_boolean size_reloc;
252b5132
RH
1446
1447 r_symndx = ELF32_R_SYM (rel->r_info);
13ae64f3 1448 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1449
d9bc7a44 1450 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
f5f31454 1451 {
d003868e
AM
1452 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1453 abfd,
8f615d07 1454 r_symndx);
b34976b6 1455 return FALSE;
f5f31454
L
1456 }
1457
252b5132 1458 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L
1459 {
1460 /* A local symbol. */
c2e61a4e
L
1461 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1462 abfd, r_symndx);
1463 if (isym == NULL)
1464 return FALSE;
c25bc9fc
L
1465
1466 /* Check relocation against local STT_GNU_IFUNC symbol. */
c25bc9fc
L
1467 if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1468 {
9fff0c39 1469 h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
c25bc9fc 1470 if (h == NULL)
c2e61a4e 1471 return FALSE;
6bbec505 1472
c25bc9fc
L
1473 /* Fake a STT_GNU_IFUNC symbol. */
1474 h->type = STT_GNU_IFUNC;
1475 h->def_regular = 1;
1476 h->ref_regular = 1;
1477 h->forced_local = 1;
1478 h->root.type = bfd_link_hash_defined;
1479 }
1480 else
1481 h = NULL;
1482 }
252b5132 1483 else
71cb9464 1484 {
4c544807 1485 isym = NULL;
71cb9464
L
1486 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1487 while (h->root.type == bfd_link_hash_indirect
1488 || h->root.type == bfd_link_hash_warning)
1489 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1490 }
cbe950e9 1491
c25bc9fc
L
1492 if (h != NULL)
1493 {
cbe950e9
L
1494 /* Create the ifunc sections for static executables. If we
1495 never see an indirect function symbol nor we are building
1496 a static executable, those sections will be empty and
1497 won't appear in output. */
1498 switch (r_type)
1499 {
1500 default:
1501 break;
1502
1503 case R_386_32:
1504 case R_386_PC32:
1505 case R_386_PLT32:
1506 case R_386_GOT32:
1507 case R_386_GOTOFF:
9d4057ee
AM
1508 if (htab->elf.dynobj == NULL)
1509 htab->elf.dynobj = abfd;
1510 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1511 return FALSE;
cbe950e9
L
1512 break;
1513 }
1514
ad1e85de
L
1515 /* It is referenced by a non-shared object. */
1516 h->ref_regular = 1;
61315175 1517 h->root.non_ir_ref = 1;
71cb9464 1518 }
252b5132 1519
142411ca
L
1520 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1521 symtab_hdr, sym_hashes,
1522 &r_type, GOT_UNKNOWN,
23209a78 1523 rel, rel_end, h, r_symndx))
c2e61a4e 1524 return FALSE;
13ae64f3
JJ
1525
1526 switch (r_type)
252b5132 1527 {
37e55690
JJ
1528 case R_386_TLS_LDM:
1529 htab->tls_ldm_got.refcount += 1;
1530 goto create_got;
1531
1532 case R_386_PLT32:
1533 /* This symbol requires a procedure linkage table entry. We
1534 actually build the entry in adjust_dynamic_symbol,
1535 because this might be a case of linking PIC code which is
1536 never referenced by a dynamic object, in which case we
1537 don't need to generate a procedure linkage table entry
1538 after all. */
1539
1540 /* If this is a local symbol, we resolve it directly without
1541 creating a procedure linkage table entry. */
1542 if (h == NULL)
1543 continue;
1544
f5385ebf 1545 h->needs_plt = 1;
37e55690
JJ
1546 h->plt.refcount += 1;
1547 break;
1548
6a3e1bae 1549 case R_386_SIZE32:
06a6a421 1550 size_reloc = TRUE;
6a3e1bae
L
1551 goto do_size;
1552
13ae64f3 1553 case R_386_TLS_IE_32:
37e55690
JJ
1554 case R_386_TLS_IE:
1555 case R_386_TLS_GOTIE:
1d85728f 1556 if (!info->executable)
13ae64f3 1557 info->flags |= DF_STATIC_TLS;
37e55690
JJ
1558 /* Fall through */
1559
252b5132 1560 case R_386_GOT32:
13ae64f3 1561 case R_386_TLS_GD:
67a4f2b7
AO
1562 case R_386_TLS_GOTDESC:
1563 case R_386_TLS_DESC_CALL:
252b5132 1564 /* This symbol requires a global offset table entry. */
13ae64f3
JJ
1565 {
1566 int tls_type, old_tls_type;
1567
1568 switch (r_type)
1569 {
1570 default:
1571 case R_386_GOT32: tls_type = GOT_NORMAL; break;
1572 case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
67a4f2b7
AO
1573 case R_386_TLS_GOTDESC:
1574 case R_386_TLS_DESC_CALL:
1575 tls_type = GOT_TLS_GDESC; break;
37e55690
JJ
1576 case R_386_TLS_IE_32:
1577 if (ELF32_R_TYPE (rel->r_info) == r_type)
1578 tls_type = GOT_TLS_IE_NEG;
1579 else
ebcfb3c0
JJ
1580 /* If this is a GD->IE transition, we may use either of
1581 R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */
37e55690
JJ
1582 tls_type = GOT_TLS_IE;
1583 break;
1584 case R_386_TLS_IE:
1585 case R_386_TLS_GOTIE:
1586 tls_type = GOT_TLS_IE_POS; break;
13ae64f3
JJ
1587 }
1588
1589 if (h != NULL)
1590 {
1591 h->got.refcount += 1;
1592 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1593 }
1594 else
1595 {
1596 bfd_signed_vma *local_got_refcounts;
1597
1598 /* This is a global offset table entry for a local symbol. */
1599 local_got_refcounts = elf_local_got_refcounts (abfd);
1600 if (local_got_refcounts == NULL)
1601 {
1602 bfd_size_type size;
1603
1604 size = symtab_hdr->sh_info;
67a4f2b7
AO
1605 size *= (sizeof (bfd_signed_vma)
1606 + sizeof (bfd_vma) + sizeof(char));
a50b1753
NC
1607 local_got_refcounts = (bfd_signed_vma *)
1608 bfd_zalloc (abfd, size);
13ae64f3 1609 if (local_got_refcounts == NULL)
c2e61a4e 1610 return FALSE;
13ae64f3 1611 elf_local_got_refcounts (abfd) = local_got_refcounts;
67a4f2b7
AO
1612 elf_i386_local_tlsdesc_gotent (abfd)
1613 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
13ae64f3 1614 elf_i386_local_got_tls_type (abfd)
67a4f2b7 1615 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
13ae64f3
JJ
1616 }
1617 local_got_refcounts[r_symndx] += 1;
1618 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1619 }
1620
37e55690
JJ
1621 if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1622 tls_type |= old_tls_type;
13ae64f3
JJ
1623 /* If a TLS symbol is accessed using IE at least once,
1624 there is no point to use dynamic model for it. */
ebcfb3c0 1625 else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7 1626 && (! GOT_TLS_GD_ANY_P (old_tls_type)
37e55690 1627 || (tls_type & GOT_TLS_IE) == 0))
13ae64f3 1628 {
67a4f2b7 1629 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
37e55690 1630 tls_type = old_tls_type;
67a4f2b7
AO
1631 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1632 && GOT_TLS_GD_ANY_P (tls_type))
1633 tls_type |= old_tls_type;
13ae64f3
JJ
1634 else
1635 {
09a24cbf 1636 if (h)
4c544807
L
1637 name = h->root.root.string;
1638 else
1639 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1640 NULL);
13ae64f3 1641 (*_bfd_error_handler)
d003868e 1642 (_("%B: `%s' accessed both as normal and "
55fd94b0 1643 "thread local symbol"),
4c544807 1644 abfd, name);
68c4a57e 1645 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1646 return FALSE;
13ae64f3
JJ
1647 }
1648 }
1649
1650 if (old_tls_type != tls_type)
1651 {
1652 if (h != NULL)
1653 elf_i386_hash_entry (h)->tls_type = tls_type;
1654 else
1655 elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1656 }
1657 }
0ac8d2ca
AM
1658 /* Fall through */
1659
1660 case R_386_GOTOFF:
1661 case R_386_GOTPC:
13ae64f3 1662 create_got:
6de2ae4a 1663 if (htab->elf.sgot == NULL)
0ac8d2ca
AM
1664 {
1665 if (htab->elf.dynobj == NULL)
1666 htab->elf.dynobj = abfd;
6de2ae4a 1667 if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
c2e61a4e 1668 return FALSE;
0ac8d2ca 1669 }
37e55690
JJ
1670 if (r_type != R_386_TLS_IE)
1671 break;
1672 /* Fall through */
252b5132 1673
37e55690
JJ
1674 case R_386_TLS_LE_32:
1675 case R_386_TLS_LE:
1d85728f 1676 if (info->executable)
37e55690 1677 break;
bffbf940 1678 info->flags |= DF_STATIC_TLS;
b34976b6 1679 /* Fall through */
252b5132
RH
1680
1681 case R_386_32:
1682 case R_386_PC32:
710ab287 1683 if (h != NULL && info->executable)
6725bdbf 1684 {
12d0ee4a 1685 /* If this reloc is in a read-only section, we might
ebe50bae
AM
1686 need a copy reloc. We can't check reliably at this
1687 stage whether the section is read-only, as input
1688 sections have not yet been mapped to output sections.
1689 Tentatively set the flag for now, and correct in
1690 adjust_dynamic_symbol. */
f5385ebf 1691 h->non_got_ref = 1;
12d0ee4a
AM
1692
1693 /* We may need a .plt entry if the function this reloc
1694 refers to is in a shared lib. */
51b64d56 1695 h->plt.refcount += 1;
c6585bbb 1696 if (r_type != R_386_PC32)
f5385ebf 1697 h->pointer_equality_needed = 1;
6725bdbf 1698 }
7843f00e 1699
06a6a421 1700 size_reloc = FALSE;
6a3e1bae 1701do_size:
252b5132 1702 /* If we are creating a shared library, and this is a reloc
f69da49f
AM
1703 against a global symbol, or a non PC relative reloc
1704 against a local symbol, then we need to copy the reloc
1705 into the shared library. However, if we are linking with
1706 -Bsymbolic, we do not need to copy a reloc against a
1707 global symbol which is defined in an object we are
1708 including in the link (i.e., DEF_REGULAR is set). At
1709 this point we have not seen all the input files, so it is
1710 possible that DEF_REGULAR is not set now but will be set
1f655a09
L
1711 later (it is never cleared). In case of a weak definition,
1712 DEF_REGULAR may be cleared later by a strong definition in
ebe50bae 1713 a shared library. We account for that possibility below by
1f655a09
L
1714 storing information in the relocs_copied field of the hash
1715 table entry. A similar situation occurs when creating
1716 shared libraries and symbol visibility changes render the
12d0ee4a 1717 symbol local.
56882138 1718
12d0ee4a
AM
1719 If on the other hand, we are creating an executable, we
1720 may need to keep relocations for symbols satisfied by a
1721 dynamic library if we manage to avoid copy relocs for the
1722 symbol. */
1723 if ((info->shared
1724 && (sec->flags & SEC_ALLOC) != 0
13ae64f3 1725 && (r_type != R_386_PC32
12d0ee4a 1726 || (h != NULL
55255dae 1727 && (! SYMBOLIC_BIND (info, h)
12d0ee4a 1728 || h->root.type == bfd_link_hash_defweak
f5385ebf 1729 || !h->def_regular))))
a23b6845
AM
1730 || (ELIMINATE_COPY_RELOCS
1731 && !info->shared
12d0ee4a
AM
1732 && (sec->flags & SEC_ALLOC) != 0
1733 && h != NULL
12d0ee4a 1734 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1735 || !h->def_regular)))
252b5132 1736 {
e03a8ed8
L
1737 struct elf_dyn_relocs *p;
1738 struct elf_dyn_relocs **head;
ec338859 1739
12d0ee4a
AM
1740 /* We must copy these reloc types into the output file.
1741 Create a reloc section in dynobj and make room for
1742 this reloc. */
252b5132
RH
1743 if (sreloc == NULL)
1744 {
0ac8d2ca
AM
1745 if (htab->elf.dynobj == NULL)
1746 htab->elf.dynobj = abfd;
1747
83bac4b0
NC
1748 sreloc = _bfd_elf_make_dynamic_reloc_section
1749 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1750
252b5132 1751 if (sreloc == NULL)
c2e61a4e 1752 return FALSE;
252b5132
RH
1753 }
1754
0c715baa
AM
1755 /* If this is a global symbol, we count the number of
1756 relocations we need for this symbol. */
1757 if (h != NULL)
252b5132 1758 {
ec338859 1759 head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
0c715baa
AM
1760 }
1761 else
1762 {
ec338859
AM
1763 /* Track dynamic relocs needed for local syms too.
1764 We really need local syms available to do this
1765 easily. Oh well. */
87d72d41 1766 void **vpp;
ec338859 1767 asection *s;
87d72d41
AM
1768
1769 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1770 abfd, r_symndx);
1771 if (isym == NULL)
1772 return FALSE;
1773
1774 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
ec338859 1775 if (s == NULL)
87d72d41 1776 s = sec;
ec338859 1777
e81d3500 1778 vpp = &elf_section_data (s)->local_dynrel;
e03a8ed8 1779 head = (struct elf_dyn_relocs **)vpp;
ec338859
AM
1780 }
1781
1782 p = *head;
1783 if (p == NULL || p->sec != sec)
1784 {
1785 bfd_size_type amt = sizeof *p;
a50b1753
NC
1786 p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1787 amt);
ec338859 1788 if (p == NULL)
c2e61a4e 1789 return FALSE;
ec338859
AM
1790 p->next = *head;
1791 *head = p;
1792 p->sec = sec;
1793 p->count = 0;
1794 p->pc_count = 0;
252b5132 1795 }
ec338859
AM
1796
1797 p->count += 1;
06a6a421
L
1798 /* Count size relocation as PC-relative relocation. */
1799 if (r_type == R_386_PC32 || size_reloc)
ec338859 1800 p->pc_count += 1;
252b5132 1801 }
252b5132
RH
1802 break;
1803
1804 /* This relocation describes the C++ object vtable hierarchy.
1805 Reconstruct it for later use during GC. */
1806 case R_386_GNU_VTINHERIT:
d17e0c6e 1807 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1808 return FALSE;
252b5132
RH
1809 break;
1810
1811 /* This relocation describes which C++ vtable entries are actually
1812 used. Record for later use during GC. */
1813 case R_386_GNU_VTENTRY:
c6aa130f
MS
1814 BFD_ASSERT (h != NULL);
1815 if (h != NULL
1816 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
c2e61a4e 1817 return FALSE;
252b5132
RH
1818 break;
1819
1820 default:
1821 break;
1822 }
1823 }
1824
b34976b6 1825 return TRUE;
252b5132
RH
1826}
1827
1828/* Return the section that should be marked against GC for a given
1829 relocation. */
1830
1831static asection *
55fd94b0 1832elf_i386_gc_mark_hook (asection *sec,
07adf181 1833 struct bfd_link_info *info,
55fd94b0
AM
1834 Elf_Internal_Rela *rel,
1835 struct elf_link_hash_entry *h,
1836 Elf_Internal_Sym *sym)
252b5132
RH
1837{
1838 if (h != NULL)
07adf181
AM
1839 switch (ELF32_R_TYPE (rel->r_info))
1840 {
1841 case R_386_GNU_VTINHERIT:
1842 case R_386_GNU_VTENTRY:
1843 return NULL;
1844 }
1845
1846 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH
1847}
1848
1849/* Update the got entry reference counts for the section being removed. */
1850
b34976b6 1851static bfd_boolean
55fd94b0
AM
1852elf_i386_gc_sweep_hook (bfd *abfd,
1853 struct bfd_link_info *info,
1854 asection *sec,
1855 const Elf_Internal_Rela *relocs)
252b5132 1856{
4dfe6ac6 1857 struct elf_i386_link_hash_table *htab;
dd5724d5
AM
1858 Elf_Internal_Shdr *symtab_hdr;
1859 struct elf_link_hash_entry **sym_hashes;
1860 bfd_signed_vma *local_got_refcounts;
1861 const Elf_Internal_Rela *rel, *relend;
dd5724d5 1862
7dda2462
TG
1863 if (info->relocatable)
1864 return TRUE;
1865
4dfe6ac6
NC
1866 htab = elf_i386_hash_table (info);
1867 if (htab == NULL)
1868 return FALSE;
1869
ec338859 1870 elf_section_data (sec)->local_dynrel = NULL;
dd5724d5 1871
0ffa91dd 1872 symtab_hdr = &elf_symtab_hdr (abfd);
6725bdbf
AM
1873 sym_hashes = elf_sym_hashes (abfd);
1874 local_got_refcounts = elf_local_got_refcounts (abfd);
dd5724d5
AM
1875
1876 relend = relocs + sec->reloc_count;
1877 for (rel = relocs; rel < relend; rel++)
26e41594
AM
1878 {
1879 unsigned long r_symndx;
1880 unsigned int r_type;
1881 struct elf_link_hash_entry *h = NULL;
37e55690 1882
26e41594
AM
1883 r_symndx = ELF32_R_SYM (rel->r_info);
1884 if (r_symndx >= symtab_hdr->sh_info)
1885 {
26e41594 1886 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM
1887 while (h->root.type == bfd_link_hash_indirect
1888 || h->root.type == bfd_link_hash_warning)
1889 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 1890 }
bb1cb422
L
1891 else
1892 {
1893 /* A local symbol. */
1894 Elf_Internal_Sym *isym;
1895
1896 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1897 abfd, r_symndx);
1898
1899 /* Check relocation against local STT_GNU_IFUNC symbol. */
1900 if (isym != NULL
1901 && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1902 {
1903 h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
1904 if (h == NULL)
1905 abort ();
1906 }
1907 }
0c715baa 1908
3db2e7dd
L
1909 if (h)
1910 {
1911 struct elf_i386_link_hash_entry *eh;
1912 struct elf_dyn_relocs **pp;
1913 struct elf_dyn_relocs *p;
1914
1915 eh = (struct elf_i386_link_hash_entry *) h;
1916 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1917 if (p->sec == sec)
1918 {
1919 /* Everything must go for SEC. */
1920 *pp = p->next;
1921 break;
1922 }
1923 }
1924
26e41594 1925 r_type = ELF32_R_TYPE (rel->r_info);
142411ca
L
1926 if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1927 symtab_hdr, sym_hashes,
1928 &r_type, GOT_UNKNOWN,
23209a78 1929 rel, relend, h, r_symndx))
142411ca
L
1930 return FALSE;
1931
26e41594
AM
1932 switch (r_type)
1933 {
1934 case R_386_TLS_LDM:
4dfe6ac6
NC
1935 if (htab->tls_ldm_got.refcount > 0)
1936 htab->tls_ldm_got.refcount -= 1;
26e41594 1937 break;
0c715baa 1938
26e41594 1939 case R_386_TLS_GD:
67a4f2b7
AO
1940 case R_386_TLS_GOTDESC:
1941 case R_386_TLS_DESC_CALL:
26e41594
AM
1942 case R_386_TLS_IE_32:
1943 case R_386_TLS_IE:
1944 case R_386_TLS_GOTIE:
1945 case R_386_GOT32:
1946 if (h != NULL)
1947 {
1948 if (h->got.refcount > 0)
1949 h->got.refcount -= 1;
bb1cb422
L
1950 if (h->type == STT_GNU_IFUNC)
1951 {
1952 if (h->plt.refcount > 0)
1953 h->plt.refcount -= 1;
1954 }
26e41594
AM
1955 }
1956 else if (local_got_refcounts != NULL)
1957 {
1958 if (local_got_refcounts[r_symndx] > 0)
1959 local_got_refcounts[r_symndx] -= 1;
1960 }
1961 break;
0c715baa 1962
26e41594
AM
1963 case R_386_32:
1964 case R_386_PC32:
1788fc08 1965 case R_386_SIZE32:
3db2e7dd
L
1966 if (info->shared
1967 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM
1968 break;
1969 /* Fall through */
6725bdbf 1970
26e41594
AM
1971 case R_386_PLT32:
1972 if (h != NULL)
1973 {
1974 if (h->plt.refcount > 0)
1975 h->plt.refcount -= 1;
1976 }
1977 break;
dd5724d5 1978
bb1cb422
L
1979 case R_386_GOTOFF:
1980 if (h != NULL && h->type == STT_GNU_IFUNC)
1981 {
1982 if (h->got.refcount > 0)
1983 h->got.refcount -= 1;
1984 if (h->plt.refcount > 0)
1985 h->plt.refcount -= 1;
1986 }
1987 break;
1988
26e41594
AM
1989 default:
1990 break;
1991 }
1992 }
252b5132 1993
b34976b6 1994 return TRUE;
252b5132
RH
1995}
1996
1997/* Adjust a symbol defined by a dynamic object and referenced by a
1998 regular object. The current definition is in some section of the
1999 dynamic object, but we're not including those sections. We have to
2000 change the definition to something the rest of the link can
2001 understand. */
2002
b34976b6 2003static bfd_boolean
55fd94b0
AM
2004elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
2005 struct elf_link_hash_entry *h)
252b5132 2006{
6725bdbf 2007 struct elf_i386_link_hash_table *htab;
252b5132 2008 asection *s;
5ca5bb35
L
2009 struct elf_i386_link_hash_entry *eh;
2010 struct elf_dyn_relocs *p;
252b5132 2011
cbe950e9
L
2012 /* STT_GNU_IFUNC symbol must go through PLT. */
2013 if (h->type == STT_GNU_IFUNC)
2014 {
73bcf233
L
2015 /* All local STT_GNU_IFUNC references must be treate as local
2016 calls via local PLT. */
5ca5bb35
L
2017 if (h->ref_regular
2018 && SYMBOL_CALLS_LOCAL (info, h))
2019 {
73bcf233 2020 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L
2021 struct elf_dyn_relocs **pp;
2022
2023 eh = (struct elf_i386_link_hash_entry *) h;
2024 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2025 {
2026 pc_count += p->pc_count;
2027 p->count -= p->pc_count;
2028 p->pc_count = 0;
73bcf233 2029 count += p->count;
5ca5bb35
L
2030 if (p->count == 0)
2031 *pp = p->next;
2032 else
2033 pp = &p->next;
2034 }
2035
73bcf233 2036 if (pc_count || count)
5ca5bb35
L
2037 {
2038 h->needs_plt = 1;
5ca5bb35 2039 h->non_got_ref = 1;
a5479e5f
L
2040 if (h->plt.refcount <= 0)
2041 h->plt.refcount = 1;
2042 else
2043 h->plt.refcount += 1;
5ca5bb35
L
2044 }
2045 }
2046
cbe950e9
L
2047 if (h->plt.refcount <= 0)
2048 {
2049 h->plt.offset = (bfd_vma) -1;
2050 h->needs_plt = 0;
2051 }
2052 return TRUE;
2053 }
2054
252b5132
RH
2055 /* If this is a function, put it in the procedure linkage table. We
2056 will fill in the contents of the procedure linkage table later,
2057 when we know the address of the .got section. */
2058 if (h->type == STT_FUNC
f5385ebf 2059 || h->needs_plt)
252b5132 2060 {
6725bdbf 2061 if (h->plt.refcount <= 0
9c7a29a3
AM
2062 || SYMBOL_CALLS_LOCAL (info, h)
2063 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2064 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH
2065 {
2066 /* This case can occur if we saw a PLT32 reloc in an input
dd5724d5
AM
2067 file, but the symbol was never referred to by a dynamic
2068 object, or if all references were garbage collected. In
2069 such a case, we don't actually need to build a procedure
2070 linkage table, and we can just do a PC32 reloc instead. */
bbd7ec4a 2071 h->plt.offset = (bfd_vma) -1;
f5385ebf 2072 h->needs_plt = 0;
252b5132
RH
2073 }
2074
b34976b6 2075 return TRUE;
252b5132 2076 }
6725bdbf
AM
2077 else
2078 /* It's possible that we incorrectly decided a .plt reloc was
2079 needed for an R_386_PC32 reloc to a non-function sym in
2080 check_relocs. We can't decide accurately between function and
2081 non-function syms in check-relocs; Objects loaded later in
2082 the link may change h->type. So fix it now. */
bbd7ec4a 2083 h->plt.offset = (bfd_vma) -1;
252b5132
RH
2084
2085 /* If this is a weak symbol, and there is a real definition, the
2086 processor independent code will have arranged for us to see the
2087 real definition first, and we can just use the same value. */
f6e332e6 2088 if (h->u.weakdef != NULL)
252b5132 2089 {
f6e332e6
AM
2090 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2091 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2092 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2093 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 2094 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2095 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2096 return TRUE;
252b5132
RH
2097 }
2098
2099 /* This is a reference to a symbol defined by a dynamic object which
2100 is not a function. */
2101
2102 /* If we are creating a shared library, we must presume that the
2103 only references to the symbol are via the global offset table.
2104 For such cases we need not do anything here; the relocations will
2105 be handled correctly by relocate_section. */
2106 if (info->shared)
b34976b6 2107 return TRUE;
252b5132 2108
7843f00e
ILT
2109 /* If there are no references to this symbol that do not use the
2110 GOT, we don't need to generate a copy reloc. */
f5385ebf 2111 if (!h->non_got_ref)
b34976b6 2112 return TRUE;
7843f00e 2113
8bd621d8
AM
2114 /* If -z nocopyreloc was given, we won't generate them either. */
2115 if (info->nocopyreloc)
2116 {
f5385ebf 2117 h->non_got_ref = 0;
b34976b6 2118 return TRUE;
8bd621d8
AM
2119 }
2120
643796e3 2121 htab = elf_i386_hash_table (info);
4dfe6ac6
NC
2122 if (htab == NULL)
2123 return FALSE;
643796e3
DJ
2124
2125 /* If there aren't any dynamic relocs in read-only sections, then
2126 we can keep the dynamic relocs and avoid the copy reloc. This
2127 doesn't work on VxWorks, where we can not have dynamic relocations
2128 (other than copy and jump slot relocations) in an executable. */
23209a78
RM
2129 if (ELIMINATE_COPY_RELOCS
2130 && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
ebe50bae 2131 {
a23b6845
AM
2132 eh = (struct elf_i386_link_hash_entry *) h;
2133 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2134 {
2135 s = p->sec->output_section;
2136 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2137 break;
2138 }
2139
a23b6845
AM
2140 if (p == NULL)
2141 {
f5385ebf 2142 h->non_got_ref = 0;
a23b6845
AM
2143 return TRUE;
2144 }
ebe50bae
AM
2145 }
2146
252b5132
RH
2147 /* We must allocate the symbol in our .dynbss section, which will
2148 become part of the .bss section of the executable. There will be
2149 an entry for this symbol in the .dynsym section. The dynamic
2150 object will contain position independent code, so all references
2151 from the dynamic object to this symbol will go through the global
2152 offset table. The dynamic linker will use the .dynsym entry to
2153 determine the address it must put in the global offset table, so
2154 both the dynamic object and the regular object will refer to the
2155 same memory location for the variable. */
2156
252b5132
RH
2157 /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2158 copy the initial value out of the dynamic object and into the
0ac8d2ca 2159 runtime process image. */
1d7e9d18 2160 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
252b5132 2161 {
eea6121a 2162 htab->srelbss->size += sizeof (Elf32_External_Rel);
f5385ebf 2163 h->needs_copy = 1;
252b5132
RH
2164 }
2165
0ac8d2ca 2166 s = htab->sdynbss;
252b5132 2167
027297b7 2168 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH
2169}
2170
6725bdbf 2171/* Allocate space in .plt, .got and associated reloc sections for
0c715baa 2172 dynamic relocs. */
6725bdbf 2173
b34976b6 2174static bfd_boolean
eb4ff4d6 2175elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6725bdbf
AM
2176{
2177 struct bfd_link_info *info;
2178 struct elf_i386_link_hash_table *htab;
5a15f56f 2179 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2180 struct elf_dyn_relocs *p;
25e762b9 2181 unsigned plt_entry_size;
6725bdbf 2182
e92d460e 2183 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2184 return TRUE;
6725bdbf 2185
cbe950e9 2186 eh = (struct elf_i386_link_hash_entry *) h;
e92d460e 2187
6725bdbf
AM
2188 info = (struct bfd_link_info *) inf;
2189 htab = elf_i386_hash_table (info);
4dfe6ac6
NC
2190 if (htab == NULL)
2191 return FALSE;
6725bdbf 2192
25e762b9
RM
2193 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
2194
cbe950e9
L
2195 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2196 here if it is defined and referenced in a non-shared object. */
2197 if (h->type == STT_GNU_IFUNC
2198 && h->def_regular)
25e762b9
RM
2199 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
2200 plt_entry_size, 4);
cbe950e9
L
2201 else if (htab->elf.dynamic_sections_created
2202 && h->plt.refcount > 0)
6725bdbf 2203 {
5a15f56f
AM
2204 /* Make sure this symbol is output as a dynamic symbol.
2205 Undefined weak syms won't yet be marked as dynamic. */
2206 if (h->dynindx == -1
f5385ebf 2207 && !h->forced_local)
5a15f56f 2208 {
c152c796 2209 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2210 return FALSE;
5a15f56f
AM
2211 }
2212
4e795f50
AM
2213 if (info->shared
2214 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
ced53ee5 2215 {
6de2ae4a 2216 asection *s = htab->elf.splt;
6725bdbf 2217
ced53ee5
AM
2218 /* If this is the first .plt entry, make room for the special
2219 first entry. */
eea6121a 2220 if (s->size == 0)
25e762b9 2221 s->size += plt_entry_size;
6725bdbf 2222
eea6121a 2223 h->plt.offset = s->size;
6725bdbf 2224
ced53ee5
AM
2225 /* If this symbol is not defined in a regular file, and we are
2226 not generating a shared library, then set the symbol to this
2227 location in the .plt. This is required to make function
2228 pointers compare as equal between the normal executable and
2229 the shared library. */
2230 if (! info->shared
f5385ebf 2231 && !h->def_regular)
ced53ee5
AM
2232 {
2233 h->root.u.def.section = s;
2234 h->root.u.def.value = h->plt.offset;
2235 }
6725bdbf 2236
ced53ee5 2237 /* Make room for this entry. */
25e762b9 2238 s->size += plt_entry_size;
6725bdbf 2239
ced53ee5
AM
2240 /* We also need to make an entry in the .got.plt section, which
2241 will be placed in the .got section by the linker script. */
6de2ae4a 2242 htab->elf.sgotplt->size += 4;
6725bdbf 2243
6725bdbf 2244 /* We also need to make an entry in the .rel.plt section. */
6de2ae4a 2245 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
e1f98742 2246 htab->elf.srelplt->reloc_count++;
eac338cf 2247
23209a78
RM
2248 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
2249 && !info->shared)
eac338cf
PB
2250 {
2251 /* VxWorks has a second set of relocations for each PLT entry
2252 in executables. They go in a separate relocation section,
2253 which is processed by the kernel loader. */
2254
2255 /* There are two relocations for the initial PLT entry: an
2256 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2257 R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
2258
25e762b9 2259 if (h->plt.offset == plt_entry_size)
eac338cf
PB
2260 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2261
2262 /* There are two extra relocations for each subsequent PLT entry:
2263 an R_386_32 relocation for the GOT entry, and an R_386_32
2264 relocation for the PLT entry. */
2265
2266 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2267 }
6725bdbf 2268 }
ced53ee5
AM
2269 else
2270 {
51b64d56 2271 h->plt.offset = (bfd_vma) -1;
f5385ebf 2272 h->needs_plt = 0;
ced53ee5 2273 }
6725bdbf
AM
2274 }
2275 else
2276 {
51b64d56 2277 h->plt.offset = (bfd_vma) -1;
f5385ebf 2278 h->needs_plt = 0;
6725bdbf
AM
2279 }
2280
67a4f2b7
AO
2281 eh->tlsdesc_got = (bfd_vma) -1;
2282
37e55690 2283 /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
13ae64f3
JJ
2284 make it a R_386_TLS_LE_32 requiring no TLS entry. */
2285 if (h->got.refcount > 0
1d85728f 2286 && info->executable
13ae64f3 2287 && h->dynindx == -1
37e55690 2288 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
cedb70c5 2289 h->got.offset = (bfd_vma) -1;
13ae64f3 2290 else if (h->got.refcount > 0)
6725bdbf 2291 {
0ac8d2ca 2292 asection *s;
b34976b6 2293 bfd_boolean dyn;
13ae64f3 2294 int tls_type = elf_i386_hash_entry(h)->tls_type;
6725bdbf 2295
5a15f56f
AM
2296 /* Make sure this symbol is output as a dynamic symbol.
2297 Undefined weak syms won't yet be marked as dynamic. */
2298 if (h->dynindx == -1
f5385ebf 2299 && !h->forced_local)
5a15f56f 2300 {
c152c796 2301 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2302 return FALSE;
5a15f56f
AM
2303 }
2304
6de2ae4a 2305 s = htab->elf.sgot;
67a4f2b7
AO
2306 if (GOT_TLS_GDESC_P (tls_type))
2307 {
6de2ae4a 2308 eh->tlsdesc_got = htab->elf.sgotplt->size
67a4f2b7 2309 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2310 htab->elf.sgotplt->size += 8;
67a4f2b7
AO
2311 h->got.offset = (bfd_vma) -2;
2312 }
2313 if (! GOT_TLS_GDESC_P (tls_type)
2314 || GOT_TLS_GD_P (tls_type))
2315 {
2316 h->got.offset = s->size;
2317 s->size += 4;
2318 /* R_386_TLS_GD needs 2 consecutive GOT slots. */
2319 if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2320 s->size += 4;
2321 }
ebe50bae 2322 dyn = htab->elf.dynamic_sections_created;
13ae64f3 2323 /* R_386_TLS_IE_32 needs one dynamic relocation,
37e55690
JJ
2324 R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2325 (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2326 need two), R_386_TLS_GD needs one if local symbol and two if
2327 global. */
2328 if (tls_type == GOT_TLS_IE_BOTH)
6de2ae4a 2329 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7 2330 else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
37e55690 2331 || (tls_type & GOT_TLS_IE))
6de2ae4a 2332 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2333 else if (GOT_TLS_GD_P (tls_type))
6de2ae4a 2334 htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO
2335 else if (! GOT_TLS_GDESC_P (tls_type)
2336 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2337 || h->root.type != bfd_link_hash_undefweak)
ef5aade5
L
2338 && (info->shared
2339 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
6de2ae4a 2340 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
67a4f2b7 2341 if (GOT_TLS_GDESC_P (tls_type))
6de2ae4a 2342 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
6725bdbf
AM
2343 }
2344 else
51b64d56 2345 h->got.offset = (bfd_vma) -1;
6725bdbf 2346
5a15f56f 2347 if (eh->dyn_relocs == NULL)
b34976b6 2348 return TRUE;
5a15f56f 2349
0c715baa
AM
2350 /* In the shared -Bsymbolic case, discard space allocated for
2351 dynamic pc-relative relocs against symbols which turn out to be
2352 defined in regular objects. For the normal shared case, discard
0ac8d2ca
AM
2353 space for pc-relative relocs that have become local due to symbol
2354 visibility changes. */
0c715baa
AM
2355
2356 if (info->shared)
5a15f56f 2357 {
09695f56
AM
2358 /* The only reloc that uses pc_count is R_386_PC32, which will
2359 appear on a call or on something like ".long foo - .". We
2360 want calls to protected symbols to resolve directly to the
2361 function rather than going via the plt. If people want
2362 function pointer comparisons to work as expected then they
2363 should avoid writing assembly like ".long foo - .". */
2364 if (SYMBOL_CALLS_LOCAL (info, h))
5a15f56f 2365 {
e03a8ed8 2366 struct elf_dyn_relocs **pp;
0c715baa
AM
2367
2368 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2369 {
2370 p->count -= p->pc_count;
2371 p->pc_count = 0;
2372 if (p->count == 0)
2373 *pp = p->next;
2374 else
2375 pp = &p->next;
2376 }
5a15f56f 2377 }
4e795f50 2378
23209a78 2379 if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
3348747a 2380 {
e03a8ed8 2381 struct elf_dyn_relocs **pp;
3348747a
NS
2382 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2383 {
2384 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2385 *pp = p->next;
2386 else
2387 pp = &p->next;
2388 }
2389 }
2390
4e795f50 2391 /* Also discard relocs on undefined weak syms with non-default
3348747a 2392 visibility. */
22d606e9 2393 if (eh->dyn_relocs != NULL
4e795f50 2394 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM
2395 {
2396 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2397 eh->dyn_relocs = NULL;
2398
2399 /* Make sure undefined weak symbols are output as a dynamic
2400 symbol in PIEs. */
2401 else if (h->dynindx == -1
2402 && !h->forced_local)
2403 {
2404 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2405 return FALSE;
2406 }
2407 }
0c715baa 2408 }
a23b6845 2409 else if (ELIMINATE_COPY_RELOCS)
0c715baa
AM
2410 {
2411 /* For the non-shared case, discard space for relocs against
2412 symbols which turn out to need copy relocs or are not
2413 dynamic. */
2414
f5385ebf
AM
2415 if (!h->non_got_ref
2416 && ((h->def_dynamic
2417 && !h->def_regular)
ebe50bae 2418 || (htab->elf.dynamic_sections_created
0c715baa
AM
2419 && (h->root.type == bfd_link_hash_undefweak
2420 || h->root.type == bfd_link_hash_undefined))))
2421 {
2422 /* Make sure this symbol is output as a dynamic symbol.
2423 Undefined weak syms won't yet be marked as dynamic. */
2424 if (h->dynindx == -1
f5385ebf 2425 && !h->forced_local)
0c715baa 2426 {
c152c796 2427 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2428 return FALSE;
0c715baa 2429 }
5a15f56f 2430
0c715baa
AM
2431 /* If that succeeded, we know we'll be keeping all the
2432 relocs. */
2433 if (h->dynindx != -1)
2434 goto keep;
2435 }
2436
2437 eh->dyn_relocs = NULL;
2438
ec338859 2439 keep: ;
5a15f56f
AM
2440 }
2441
0c715baa
AM
2442 /* Finally, allocate space. */
2443 for (p = eh->dyn_relocs; p != NULL; p = p->next)
12d0ee4a 2444 {
e7c33416
NC
2445 asection *sreloc;
2446
cbe950e9 2447 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC
2448
2449 BFD_ASSERT (sreloc != NULL);
eea6121a 2450 sreloc->size += p->count * sizeof (Elf32_External_Rel);
12d0ee4a
AM
2451 }
2452
b34976b6 2453 return TRUE;
6725bdbf
AM
2454}
2455
c25bc9fc
L
2456/* Allocate space in .plt, .got and associated reloc sections for
2457 local dynamic relocs. */
2458
2459static bfd_boolean
2460elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2461{
2462 struct elf_link_hash_entry *h
2463 = (struct elf_link_hash_entry *) *slot;
2464
2465 if (h->type != STT_GNU_IFUNC
2466 || !h->def_regular
2467 || !h->ref_regular
2468 || !h->forced_local
2469 || h->root.type != bfd_link_hash_defined)
2470 abort ();
2471
2472 return elf_i386_allocate_dynrelocs (h, inf);
2473}
2474
0c715baa
AM
2475/* Find any dynamic relocs that apply to read-only sections. */
2476
b34976b6 2477static bfd_boolean
eb4ff4d6 2478elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
0c715baa
AM
2479{
2480 struct elf_i386_link_hash_entry *eh;
e03a8ed8 2481 struct elf_dyn_relocs *p;
0c715baa 2482
aa715242
L
2483 /* Skip local IFUNC symbols. */
2484 if (h->forced_local && h->type == STT_GNU_IFUNC)
2485 return TRUE;
2486
0c715baa
AM
2487 eh = (struct elf_i386_link_hash_entry *) h;
2488 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2489 {
2490 asection *s = p->sec->output_section;
2491
2492 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2493 {
2494 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2495
2496 info->flags |= DF_TEXTREL;
2497
b70321a2
L
2498 if (info->warn_shared_textrel && info->shared)
2499 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
2500 p->sec->owner, h->root.root.string,
2501 p->sec);
2502
0c715baa 2503 /* Not an error, just cut short the traversal. */
b34976b6 2504 return FALSE;
0c715baa
AM
2505 }
2506 }
b34976b6 2507 return TRUE;
0c715baa
AM
2508}
2509
daa67607
L
2510/* Convert
2511 mov foo@GOT(%reg), %reg
2512 to
2513 lea foo@GOTOFF(%reg), %reg
2514 with the local symbol, foo. */
2515
2516static bfd_boolean
2517elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
2518 struct bfd_link_info *link_info)
2519{
2520 Elf_Internal_Shdr *symtab_hdr;
2521 Elf_Internal_Rela *internal_relocs;
2522 Elf_Internal_Rela *irel, *irelend;
2523 bfd_byte *contents;
2524 struct elf_i386_link_hash_table *htab;
2525 bfd_boolean changed_contents;
2526 bfd_boolean changed_relocs;
2527 bfd_signed_vma *local_got_refcounts;
2528
2529 /* Don't even try to convert non-ELF outputs. */
2530 if (!is_elf_hash_table (link_info->hash))
2531 return FALSE;
2532
fbdc86d9 2533 /* Nothing to do if there are no codes, no relocations or no output. */
daa67607 2534 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
fbdc86d9
L
2535 || sec->reloc_count == 0
2536 || discarded_section (sec))
daa67607
L
2537 return TRUE;
2538
2539 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2540
2541 /* Load the relocations for this section. */
2542 internal_relocs = (_bfd_elf_link_read_relocs
2543 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2544 link_info->keep_memory));
2545 if (internal_relocs == NULL)
2546 return FALSE;
2547
2548 htab = elf_i386_hash_table (link_info);
2549 changed_contents = FALSE;
2550 changed_relocs = FALSE;
2551 local_got_refcounts = elf_local_got_refcounts (abfd);
2552
2553 /* Get the section contents. */
2554 if (elf_section_data (sec)->this_hdr.contents != NULL)
2555 contents = elf_section_data (sec)->this_hdr.contents;
2556 else
2557 {
2558 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2559 goto error_return;
2560 }
2561
2562 irelend = internal_relocs + sec->reloc_count;
2563 for (irel = internal_relocs; irel < irelend; irel++)
2564 {
2565 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2566 unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
2567 unsigned int indx;
2568 struct elf_link_hash_entry *h;
2569
2570 if (r_type != R_386_GOT32)
2571 continue;
2572
2573 /* Get the symbol referred to by the reloc. */
2574 if (r_symndx < symtab_hdr->sh_info)
2575 {
2576 Elf_Internal_Sym *isym;
2577
2578 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2579 abfd, r_symndx);
2580
2581 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
2582 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
2583 && bfd_get_8 (input_bfd,
2584 contents + irel->r_offset - 2) == 0x8b)
2585 {
2586 bfd_put_8 (output_bfd, 0x8d,
2587 contents + irel->r_offset - 2);
2588 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2589 if (local_got_refcounts != NULL
2590 && local_got_refcounts[r_symndx] > 0)
2591 local_got_refcounts[r_symndx] -= 1;
2592 changed_contents = TRUE;
2593 changed_relocs = TRUE;
2594 }
2595 continue;
2596 }
2597
2598 indx = r_symndx - symtab_hdr->sh_info;
2599 h = elf_sym_hashes (abfd)[indx];
2600 BFD_ASSERT (h != NULL);
2601
2602 while (h->root.type == bfd_link_hash_indirect
2603 || h->root.type == bfd_link_hash_warning)
2604 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2605
3f65f599
L
2606 /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
2607 optimizing _DYNAMIC since ld.so may use its link-time address. */
daa67607
L
2608 if (h->def_regular
2609 && h->type != STT_GNU_IFUNC
9637f6ef 2610 && h != htab->elf.hdynamic
daa67607
L
2611 && SYMBOL_REFERENCES_LOCAL (link_info, h)
2612 && bfd_get_8 (input_bfd,
2613 contents + irel->r_offset - 2) == 0x8b)
2614 {
2615 bfd_put_8 (output_bfd, 0x8d,
2616 contents + irel->r_offset - 2);
2617 irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
2618 if (h->got.refcount > 0)
2619 h->got.refcount -= 1;
2620 changed_contents = TRUE;
2621 changed_relocs = TRUE;
2622 }
2623 }
2624
2625 if (contents != NULL
2626 && elf_section_data (sec)->this_hdr.contents != contents)
2627 {
2628 if (!changed_contents && !link_info->keep_memory)
2629 free (contents);
2630 else
2631 {
2632 /* Cache the section contents for elf_link_input_bfd. */
2633 elf_section_data (sec)->this_hdr.contents = contents;
2634 }
2635 }
2636
2637 if (elf_section_data (sec)->relocs != internal_relocs)
2638 {
2639 if (!changed_relocs)
2640 free (internal_relocs);
2641 else
2642 elf_section_data (sec)->relocs = internal_relocs;
2643 }
2644
2645 return TRUE;
2646
2647 error_return:
2648 if (contents != NULL
2649 && elf_section_data (sec)->this_hdr.contents != contents)
2650 free (contents);
2651 if (internal_relocs != NULL
2652 && elf_section_data (sec)->relocs != internal_relocs)
2653 free (internal_relocs);
2654 return FALSE;
2655}
2656
252b5132
RH
2657/* Set the sizes of the dynamic sections. */
2658
b34976b6 2659static bfd_boolean
23209a78 2660elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
252b5132 2661{
6725bdbf 2662 struct elf_i386_link_hash_table *htab;
252b5132
RH
2663 bfd *dynobj;
2664 asection *s;
b34976b6 2665 bfd_boolean relocs;
0c715baa 2666 bfd *ibfd;
252b5132 2667
6725bdbf 2668 htab = elf_i386_hash_table (info);
4dfe6ac6
NC
2669 if (htab == NULL)
2670 return FALSE;
ebe50bae 2671 dynobj = htab->elf.dynobj;
ffb2e45b
AM
2672 if (dynobj == NULL)
2673 abort ();
252b5132 2674
ebe50bae 2675 if (htab->elf.dynamic_sections_created)
252b5132
RH
2676 {
2677 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2678 if (info->executable)
252b5132 2679 {
3d4d4302 2680 s = bfd_get_linker_section (dynobj, ".interp");
ffb2e45b
AM
2681 if (s == NULL)
2682 abort ();
eea6121a 2683 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH
2684 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2685 }
161d71a6 2686 }
6725bdbf 2687
0c715baa
AM
2688 /* Set up .got offsets for local syms, and space for local dynamic
2689 relocs. */
2690 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
161d71a6
L
2691 {
2692 bfd_signed_vma *local_got;
2693 bfd_signed_vma *end_local_got;
13ae64f3 2694 char *local_tls_type;
67a4f2b7 2695 bfd_vma *local_tlsdesc_gotent;
161d71a6
L
2696 bfd_size_type locsymcount;
2697 Elf_Internal_Shdr *symtab_hdr;
2698 asection *srel;
6725bdbf 2699
0ffa91dd 2700 if (! is_i386_elf (ibfd))
161d71a6 2701 continue;
6725bdbf 2702
0c715baa
AM
2703 for (s = ibfd->sections; s != NULL; s = s->next)
2704 {
e03a8ed8 2705 struct elf_dyn_relocs *p;
0c715baa 2706
daa67607
L
2707 if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
2708 return FALSE;
2709
e03a8ed8 2710 for (p = ((struct elf_dyn_relocs *)
e81d3500 2711 elf_section_data (s)->local_dynrel);
ec338859
AM
2712 p != NULL;
2713 p = p->next)
0c715baa 2714 {
ec338859
AM
2715 if (!bfd_is_abs_section (p->sec)
2716 && bfd_is_abs_section (p->sec->output_section))
2717 {
2718 /* Input section has been discarded, either because
2719 it is a copy of a linkonce section or due to
2720 linker script /DISCARD/, so we'll be discarding
2721 the relocs too. */
2722 }
23209a78 2723 else if (get_elf_i386_backend_data (output_bfd)->is_vxworks
3348747a
NS
2724 && strcmp (p->sec->output_section->name,
2725 ".tls_vars") == 0)
2726 {
2727 /* Relocations in vxworks .tls_vars sections are
2728 handled specially by the loader. */
2729 }
248866a8 2730 else if (p->count != 0)
ec338859
AM
2731 {
2732 srel = elf_section_data (p->sec)->sreloc;
eea6121a 2733 srel->size += p->count * sizeof (Elf32_External_Rel);
4b819e1f
L
2734 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2735 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L
2736 {
2737 info->flags |= DF_TEXTREL;
2738 if (info->warn_shared_textrel && info->shared)
2739 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
2740 p->sec->owner, p->sec);
b70321a2 2741 }
ec338859 2742 }
0c715baa
AM
2743 }
2744 }
2745
2746 local_got = elf_local_got_refcounts (ibfd);
161d71a6
L
2747 if (!local_got)
2748 continue;
6725bdbf 2749
0ffa91dd 2750 symtab_hdr = &elf_symtab_hdr (ibfd);
161d71a6
L
2751 locsymcount = symtab_hdr->sh_info;
2752 end_local_got = local_got + locsymcount;
13ae64f3 2753 local_tls_type = elf_i386_local_got_tls_type (ibfd);
67a4f2b7 2754 local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
6de2ae4a
L
2755 s = htab->elf.sgot;
2756 srel = htab->elf.srelgot;
67a4f2b7
AO
2757 for (; local_got < end_local_got;
2758 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
161d71a6 2759 {
67a4f2b7 2760 *local_tlsdesc_gotent = (bfd_vma) -1;
161d71a6 2761 if (*local_got > 0)
6725bdbf 2762 {
67a4f2b7
AO
2763 if (GOT_TLS_GDESC_P (*local_tls_type))
2764 {
6de2ae4a 2765 *local_tlsdesc_gotent = htab->elf.sgotplt->size
67a4f2b7 2766 - elf_i386_compute_jump_table_size (htab);
6de2ae4a 2767 htab->elf.sgotplt->size += 8;
67a4f2b7
AO
2768 *local_got = (bfd_vma) -2;
2769 }
2770 if (! GOT_TLS_GDESC_P (*local_tls_type)
2771 || GOT_TLS_GD_P (*local_tls_type))
2772 {
2773 *local_got = s->size;
2774 s->size += 4;
2775 if (GOT_TLS_GD_P (*local_tls_type)
2776 || *local_tls_type == GOT_TLS_IE_BOTH)
2777 s->size += 4;
2778 }
13ae64f3 2779 if (info->shared
67a4f2b7 2780 || GOT_TLS_GD_ANY_P (*local_tls_type)
37e55690
JJ
2781 || (*local_tls_type & GOT_TLS_IE))
2782 {
2783 if (*local_tls_type == GOT_TLS_IE_BOTH)
eea6121a 2784 srel->size += 2 * sizeof (Elf32_External_Rel);
67a4f2b7
AO
2785 else if (GOT_TLS_GD_P (*local_tls_type)
2786 || ! GOT_TLS_GDESC_P (*local_tls_type))
eea6121a 2787 srel->size += sizeof (Elf32_External_Rel);
67a4f2b7 2788 if (GOT_TLS_GDESC_P (*local_tls_type))
6de2ae4a 2789 htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
37e55690 2790 }
6725bdbf 2791 }
161d71a6
L
2792 else
2793 *local_got = (bfd_vma) -1;
6725bdbf 2794 }
252b5132 2795 }
6725bdbf 2796
13ae64f3
JJ
2797 if (htab->tls_ldm_got.refcount > 0)
2798 {
2799 /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2800 relocs. */
6de2ae4a
L
2801 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2802 htab->elf.sgot->size += 8;
2803 htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
13ae64f3
JJ
2804 }
2805 else
2806 htab->tls_ldm_got.offset = -1;
2807
0c715baa
AM
2808 /* Allocate global sym .plt and .got entries, and space for global
2809 sym dynamic relocs. */
eb4ff4d6 2810 elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
252b5132 2811
c25bc9fc
L
2812 /* Allocate .plt and .got entries, and space for local symbols. */
2813 htab_traverse (htab->loc_hash_table,
2814 elf_i386_allocate_local_dynrelocs,
2815 info);
2816
67a4f2b7
AO
2817 /* For every jump slot reserved in the sgotplt, reloc_count is
2818 incremented. However, when we reserve space for TLS descriptors,
2819 it's not incremented, so in order to compute the space reserved
2820 for them, it suffices to multiply the reloc count by the jump
e1f98742 2821 slot size.
caa0075c 2822
e1f98742
L
2823 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2824 so that R_386_IRELATIVE entries come last. */
6de2ae4a 2825 if (htab->elf.srelplt)
e1f98742
L
2826 {
2827 htab->next_tls_desc_index = htab->elf.srelplt->reloc_count;
2828 htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2829 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2830 }
2831 else if (htab->elf.irelplt)
2832 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
2833
67a4f2b7 2834
a7b16ceb
L
2835 if (htab->elf.sgotplt)
2836 {
2837 /* Don't allocate .got.plt section if there are no GOT nor PLT
9a2a56cc 2838 entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L
2839 if ((htab->elf.hgot == NULL
2840 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L
2841 && (htab->elf.sgotplt->size
2842 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L
2843 && (htab->elf.splt == NULL
2844 || htab->elf.splt->size == 0)
2845 && (htab->elf.sgot == NULL
2846 || htab->elf.sgot->size == 0)
2847 && (htab->elf.iplt == NULL
2848 || htab->elf.iplt->size == 0)
2849 && (htab->elf.igotplt == NULL
2850 || htab->elf.igotplt->size == 0))
2851 htab->elf.sgotplt->size = 0;
2852 }
2853
9a2a56cc
AM
2854
2855 if (htab->plt_eh_frame != NULL
2856 && htab->elf.splt != NULL
2857 && htab->elf.splt->size != 0
2858 && !bfd_is_abs_section (htab->elf.splt->output_section)
2859 && _bfd_elf_eh_frame_present (info))
2860 htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
2861
5a15f56f
AM
2862 /* We now have determined the sizes of the various dynamic sections.
2863 Allocate memory for them. */
b34976b6 2864 relocs = FALSE;
252b5132
RH
2865 for (s = dynobj->sections; s != NULL; s = s->next)
2866 {
eac338cf
PB
2867 bfd_boolean strip_section = TRUE;
2868
252b5132
RH
2869 if ((s->flags & SEC_LINKER_CREATED) == 0)
2870 continue;
2871
6de2ae4a 2872 if (s == htab->elf.splt
9a2a56cc 2873 || s == htab->elf.sgot)
252b5132 2874 {
6725bdbf
AM
2875 /* Strip this section if we don't need it; see the
2876 comment below. */
eac338cf
PB
2877 /* We'd like to strip these sections if they aren't needed, but if
2878 we've exported dynamic symbols from them we must leave them.
2879 It's too late to tell BFD to get rid of the symbols. */
2880
7325306f 2881 if (htab->elf.hplt != NULL)
eac338cf 2882 strip_section = FALSE;
252b5132 2883 }
9a2a56cc
AM
2884 else if (s == htab->elf.sgotplt
2885 || s == htab->elf.iplt
2886 || s == htab->elf.igotplt
2887 || s == htab->plt_eh_frame
2888 || s == htab->sdynbss)
2889 {
2890 /* Strip these too. */
2891 }
0112cd26 2892 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
252b5132 2893 {
6de2ae4a
L
2894 if (s->size != 0
2895 && s != htab->elf.srelplt
2896 && s != htab->srelplt2)
b34976b6 2897 relocs = TRUE;
252b5132 2898
0ac8d2ca
AM
2899 /* We use the reloc_count field as a counter if we need
2900 to copy relocs into the output file. */
5ae0bfb6 2901 s->reloc_count = 0;
252b5132 2902 }
6725bdbf 2903 else
252b5132
RH
2904 {
2905 /* It's not one of our sections, so don't allocate space. */
2906 continue;
2907 }
2908
c456f082 2909 if (s->size == 0)
252b5132 2910 {
0ac8d2ca
AM
2911 /* If we don't need this section, strip it from the
2912 output file. This is mostly to handle .rel.bss and
2913 .rel.plt. We must create both sections in
2914 create_dynamic_sections, because they must be created
2915 before the linker maps input sections to output
2916 sections. The linker does that before
2917 adjust_dynamic_symbol is called, and it is that
2918 function which decides whether anything needs to go
2919 into these sections. */
c456f082
AM
2920 if (strip_section)
2921 s->flags |= SEC_EXCLUDE;
252b5132
RH
2922 continue;
2923 }
2924
c456f082
AM
2925 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2926 continue;
2927
f69da49f
AM
2928 /* Allocate memory for the section contents. We use bfd_zalloc
2929 here in case unused entries are not reclaimed before the
2930 section's contents are written out. This should not happen,
2931 but this way if it does, we get a R_386_NONE reloc instead
2932 of garbage. */
a50b1753 2933 s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
6725bdbf 2934 if (s->contents == NULL)
b34976b6 2935 return FALSE;
252b5132
RH
2936 }
2937
e41b3a13 2938 if (htab->plt_eh_frame != NULL
9a2a56cc
AM
2939 && htab->plt_eh_frame->contents != NULL)
2940 {
2941 memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
2942 sizeof (elf_i386_eh_frame_plt));
2943 bfd_put_32 (dynobj, htab->elf.splt->size,
2944 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
2945 }
e41b3a13 2946
ebe50bae 2947 if (htab->elf.dynamic_sections_created)
252b5132
RH
2948 {
2949 /* Add some entries to the .dynamic section. We fill in the
2950 values later, in elf_i386_finish_dynamic_sections, but we
2951 must add the entries now so that we get the correct size for
2952 the .dynamic section. The DT_DEBUG entry is filled in by the
2953 dynamic linker and used by the debugger. */
dc810e39 2954#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2955 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2956
36af4a4e 2957 if (info->executable)
252b5132 2958 {
dc810e39 2959 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2960 return FALSE;
252b5132
RH
2961 }
2962
6de2ae4a 2963 if (htab->elf.splt->size != 0)
252b5132 2964 {
dc810e39
AM
2965 if (!add_dynamic_entry (DT_PLTGOT, 0)
2966 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2967 || !add_dynamic_entry (DT_PLTREL, DT_REL)
2968 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2969 return FALSE;
252b5132
RH
2970 }
2971
2972 if (relocs)
2973 {
dc810e39
AM
2974 if (!add_dynamic_entry (DT_REL, 0)
2975 || !add_dynamic_entry (DT_RELSZ, 0)
2976 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 2977 return FALSE;
252b5132 2978
0c715baa
AM
2979 /* If any dynamic relocs apply to a read-only section,
2980 then we need a DT_TEXTREL entry. */
248866a8 2981 if ((info->flags & DF_TEXTREL) == 0)
eb4ff4d6
L
2982 elf_link_hash_traverse (&htab->elf,
2983 elf_i386_readonly_dynrelocs, info);
0c715baa
AM
2984
2985 if ((info->flags & DF_TEXTREL) != 0)
2986 {
2987 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2988 return FALSE;
0c715baa 2989 }
252b5132 2990 }
23209a78 2991 if (get_elf_i386_backend_data (output_bfd)->is_vxworks
7a2b07ff
NS
2992 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2993 return FALSE;
252b5132 2994 }
dc810e39 2995#undef add_dynamic_entry
252b5132 2996
b34976b6 2997 return TRUE;
252b5132
RH
2998}
2999
67a4f2b7
AO
3000static bfd_boolean
3001elf_i386_always_size_sections (bfd *output_bfd,
3002 struct bfd_link_info *info)
3003{
3004 asection *tls_sec = elf_hash_table (info)->tls_sec;
3005
3006 if (tls_sec)
3007 {
3008 struct elf_link_hash_entry *tlsbase;
3009
3010 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3011 "_TLS_MODULE_BASE_",
3012 FALSE, FALSE, FALSE);
3013
3014 if (tlsbase && tlsbase->type == STT_TLS)
3015 {
4dfe6ac6 3016 struct elf_i386_link_hash_table *htab;
67a4f2b7
AO
3017 struct bfd_link_hash_entry *bh = NULL;
3018 const struct elf_backend_data *bed
3019 = get_elf_backend_data (output_bfd);
3020
4dfe6ac6
NC
3021 htab = elf_i386_hash_table (info);
3022 if (htab == NULL)
3023 return FALSE;
3024
67a4f2b7
AO
3025 if (!(_bfd_generic_link_add_one_symbol
3026 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3027 tls_sec, 0, NULL, FALSE,
3028 bed->collect, &bh)))
3029 return FALSE;
9f03412a 3030
4dfe6ac6 3031 htab->tls_module_base = bh;
9f03412a 3032
67a4f2b7
AO
3033 tlsbase = (struct elf_link_hash_entry *)bh;
3034 tlsbase->def_regular = 1;
3035 tlsbase->other = STV_HIDDEN;
3036 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3037 }
3038 }
3039
3040 return TRUE;
3041}
3042
38701953
AM
3043/* Set the correct type for an x86 ELF section. We do this by the
3044 section name, which is a hack, but ought to work. */
3045
b34976b6 3046static bfd_boolean
55fd94b0
AM
3047elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
3048 Elf_Internal_Shdr *hdr,
3049 asection *sec)
38701953 3050{
91d6fa6a 3051 const char *name;
38701953
AM
3052
3053 name = bfd_get_section_name (abfd, sec);
3054
3055 /* This is an ugly, but unfortunately necessary hack that is
3056 needed when producing EFI binaries on x86. It tells
3057 elf.c:elf_fake_sections() not to consider ".reloc" as a section
3058 containing ELF relocation info. We need this hack in order to
3059 be able to generate ELF binaries that can be translated into
3060 EFI applications (which are essentially COFF objects). Those
3061 files contain a COFF ".reloc" section inside an ELFNN object,
3062 which would normally cause BFD to segfault because it would
3063 attempt to interpret this section as containing relocation
3064 entries for section "oc". With this hack enabled, ".reloc"
3065 will be treated as a normal data section, which will avoid the
3066 segfault. However, you won't be able to create an ELFNN binary
3067 with a section named "oc" that needs relocations, but that's
3068 the kind of ugly side-effects you get when detecting section
3069 types based on their names... In practice, this limitation is
3070 unlikely to bite. */
3071 if (strcmp (name, ".reloc") == 0)
3072 hdr->sh_type = SHT_PROGBITS;
3073
b34976b6 3074 return TRUE;
38701953
AM
3075}
3076
9f03412a
AO
3077/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3078 executables. Rather than setting it to the beginning of the TLS
3079 section, we have to set it to the end. This function may be called
3080 multiple times, it is idempotent. */
3081
3082static void
eb4ff4d6 3083elf_i386_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3084{
4dfe6ac6 3085 struct elf_i386_link_hash_table *htab;
9f03412a
AO
3086 struct bfd_link_hash_entry *base;
3087
3088 if (!info->executable)
3089 return;
3090
4dfe6ac6
NC
3091 htab = elf_i386_hash_table (info);
3092 if (htab == NULL)
3093 return;
9f03412a 3094
4dfe6ac6
NC
3095 base = htab->tls_module_base;
3096 if (base == NULL)
9f03412a
AO
3097 return;
3098
4dfe6ac6 3099 base->u.def.value = htab->elf.tls_size;
9f03412a
AO
3100}
3101
13ae64f3
JJ
3102/* Return the base VMA address which should be subtracted from real addresses
3103 when resolving @dtpoff relocation.
3104 This is PT_TLS segment p_vaddr. */
3105
3106static bfd_vma
eb4ff4d6 3107elf_i386_dtpoff_base (struct bfd_link_info *info)
13ae64f3 3108{
e1918d23
AM
3109 /* If tls_sec is NULL, we should have signalled an error already. */
3110 if (elf_hash_table (info)->tls_sec == NULL)
6a30718d 3111 return 0;
e1918d23 3112 return elf_hash_table (info)->tls_sec->vma;
13ae64f3
JJ
3113}
3114
3115/* Return the relocation value for @tpoff relocation
3116 if STT_TLS virtual address is ADDRESS. */
3117
3118static bfd_vma
eb4ff4d6 3119elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
13ae64f3 3120{
e1918d23 3121 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO
3122 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3123 bfd_vma static_tls_size;
13ae64f3 3124
e1918d23
AM
3125 /* If tls_sec is NULL, we should have signalled an error already. */
3126 if (htab->tls_sec == NULL)
6a30718d 3127 return 0;
7dc98aea
RO
3128
3129 /* Consider special static TLS alignment requirements. */
3130 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3131 return static_tls_size + htab->tls_sec->vma - address;
13ae64f3
JJ
3132}
3133
252b5132
RH
3134/* Relocate an i386 ELF section. */
3135
b34976b6 3136static bfd_boolean
55fd94b0
AM
3137elf_i386_relocate_section (bfd *output_bfd,
3138 struct bfd_link_info *info,
3139 bfd *input_bfd,
3140 asection *input_section,
3141 bfd_byte *contents,
3142 Elf_Internal_Rela *relocs,
3143 Elf_Internal_Sym *local_syms,
3144 asection **local_sections)
252b5132 3145{
6725bdbf 3146 struct elf_i386_link_hash_table *htab;
252b5132
RH
3147 Elf_Internal_Shdr *symtab_hdr;
3148 struct elf_link_hash_entry **sym_hashes;
3149 bfd_vma *local_got_offsets;
67a4f2b7 3150 bfd_vma *local_tlsdesc_gotents;
252b5132
RH
3151 Elf_Internal_Rela *rel;
3152 Elf_Internal_Rela *relend;
3348747a 3153 bfd_boolean is_vxworks_tls;
25e762b9 3154 unsigned plt_entry_size;
252b5132 3155
0ffa91dd 3156 BFD_ASSERT (is_i386_elf (input_bfd));
6bbec505 3157
6725bdbf 3158 htab = elf_i386_hash_table (info);
4dfe6ac6
NC
3159 if (htab == NULL)
3160 return FALSE;
0ffa91dd 3161 symtab_hdr = &elf_symtab_hdr (input_bfd);
252b5132
RH
3162 sym_hashes = elf_sym_hashes (input_bfd);
3163 local_got_offsets = elf_local_got_offsets (input_bfd);
67a4f2b7 3164 local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
3348747a
NS
3165 /* We have to handle relocations in vxworks .tls_vars sections
3166 specially, because the dynamic loader is 'weird'. */
23209a78
RM
3167 is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
3168 && info->shared
3348747a
NS
3169 && !strcmp (input_section->output_section->name,
3170 ".tls_vars"));
252b5132 3171
eb4ff4d6 3172 elf_i386_set_tls_module_base (info);
9f03412a 3173
25e762b9
RM
3174 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
3175
252b5132
RH
3176 rel = relocs;
3177 relend = relocs + input_section->reloc_count;
3178 for (; rel < relend; rel++)
3179 {
13ae64f3 3180 unsigned int r_type;
252b5132
RH
3181 reloc_howto_type *howto;
3182 unsigned long r_symndx;
3183 struct elf_link_hash_entry *h;
3184 Elf_Internal_Sym *sym;
3185 asection *sec;
67a4f2b7 3186 bfd_vma off, offplt;
252b5132 3187 bfd_vma relocation;
b34976b6 3188 bfd_boolean unresolved_reloc;
252b5132 3189 bfd_reloc_status_type r;
1b452ec6 3190 unsigned int indx;
13ae64f3 3191 int tls_type;
1788fc08 3192 bfd_vma st_size;
252b5132
RH
3193
3194 r_type = ELF32_R_TYPE (rel->r_info);
55fd94b0
AM
3195 if (r_type == R_386_GNU_VTINHERIT
3196 || r_type == R_386_GNU_VTENTRY)
252b5132 3197 continue;
dc47f327 3198
55fd94b0 3199 if ((indx = r_type) >= R_386_standard
13ae64f3
JJ
3200 && ((indx = r_type - R_386_ext_offset) - R_386_standard
3201 >= R_386_ext - R_386_standard)
3202 && ((indx = r_type - R_386_tls_offset) - R_386_ext
cbe950e9 3203 >= R_386_irelative - R_386_ext))
252b5132 3204 {
6ba842b6 3205 (*_bfd_error_handler)
d003868e
AM
3206 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3207 input_bfd, input_section, r_type);
252b5132 3208 bfd_set_error (bfd_error_bad_value);
b34976b6 3209 return FALSE;
252b5132 3210 }
1b452ec6 3211 howto = elf_howto_table + indx;
252b5132
RH
3212
3213 r_symndx = ELF32_R_SYM (rel->r_info);
252b5132
RH
3214 h = NULL;
3215 sym = NULL;
3216 sec = NULL;
b34976b6 3217 unresolved_reloc = FALSE;
252b5132
RH
3218 if (r_symndx < symtab_hdr->sh_info)
3219 {
3220 sym = local_syms + r_symndx;
3221 sec = local_sections[r_symndx];
3222 relocation = (sec->output_section->vma
3223 + sec->output_offset
3224 + sym->st_value);
1788fc08 3225 st_size = sym->st_size;
ab96bf03
AM
3226
3227 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
3228 && ((sec->flags & SEC_MERGE) != 0
3229 || (info->relocatable
3230 && sec->output_offset != 0)))
f8df10f4 3231 {
f8df10f4 3232 bfd_vma addend;
4a335f3d 3233 bfd_byte *where = contents + rel->r_offset;
f8df10f4 3234
4a335f3d 3235 switch (howto->size)
f8df10f4 3236 {
4a335f3d
AM
3237 case 0:
3238 addend = bfd_get_8 (input_bfd, where);
3239 if (howto->pc_relative)
3240 {
3241 addend = (addend ^ 0x80) - 0x80;
3242 addend += 1;
3243 }
3244 break;
3245 case 1:
3246 addend = bfd_get_16 (input_bfd, where);
3247 if (howto->pc_relative)
3248 {
3249 addend = (addend ^ 0x8000) - 0x8000;
3250 addend += 2;
3251 }
3252 break;
3253 case 2:
3254 addend = bfd_get_32 (input_bfd, where);
3255 if (howto->pc_relative)
3256 {
3257 addend = (addend ^ 0x80000000) - 0x80000000;
3258 addend += 4;
3259 }
3260 break;
3261 default:
3262 abort ();
f8df10f4
JJ
3263 }
3264
ab96bf03
AM
3265 if (info->relocatable)
3266 addend += sec->output_offset;
3267 else
3268 {
3269 asection *msec = sec;
3270 addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
3271 addend);
3272 addend -= relocation;
3273 addend += msec->output_section->vma + msec->output_offset;
3274 }
4a335f3d
AM
3275
3276 switch (howto->size)
3277 {
3278 case 0:
16a10388 3279 /* FIXME: overflow checks. */
4a335f3d
AM
3280 if (howto->pc_relative)
3281 addend -= 1;
3282 bfd_put_8 (input_bfd, addend, where);
4a335f3d
AM
3283 break;
3284 case 1:
3285 if (howto->pc_relative)
3286 addend -= 2;
3287 bfd_put_16 (input_bfd, addend, where);
4a335f3d
AM
3288 break;
3289 case 2:
3290 if (howto->pc_relative)
3291 addend -= 4;
3292 bfd_put_32 (input_bfd, addend, where);
3293 break;
3294 }
f8df10f4 3295 }
1f85278f
L
3296 else if (!info->relocatable
3297 && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc
L
3298 {
3299 /* Relocate against local STT_GNU_IFUNC symbol. */
9fff0c39
L
3300 h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
3301 FALSE);
c25bc9fc
L
3302 if (h == NULL)
3303 abort ();
3304
23209a78 3305 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L
3306 h->root.u.def.value = sym->st_value;
3307 h->root.u.def.section = sec;
3308 }
252b5132
RH
3309 }
3310 else
3311 {
3d540e93 3312 bfd_boolean warned ATTRIBUTE_UNUSED;
ffb2e45b 3313
b2a8e766
AM
3314 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3315 r_symndx, symtab_hdr, sym_hashes,
3316 h, sec, relocation,
3317 unresolved_reloc, warned);
1788fc08 3318 st_size = h->size;
252b5132
RH
3319 }
3320
dbaa2011 3321 if (sec != NULL && discarded_section (sec))
0672748a 3322 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3323 rel, 1, relend, howto, 0, contents);
9635fe29 3324
ab96bf03
AM
3325 if (info->relocatable)
3326 continue;
3327
cbe950e9
L
3328 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3329 it here if it is defined in a non-shared object. */
3330 if (h != NULL
3331 && h->type == STT_GNU_IFUNC
3332 && h->def_regular)
3333 {
3334 asection *plt, *gotplt, *base_got;
3335 bfd_vma plt_index;
4c544807 3336 const char *name;
cbe950e9
L
3337
3338 if ((input_section->flags & SEC_ALLOC) == 0
3339 || h->plt.offset == (bfd_vma) -1)
3340 abort ();
3341
3342 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3343 if (htab->elf.splt != NULL)
cbe950e9 3344 {
6de2ae4a
L
3345 plt = htab->elf.splt;
3346 gotplt = htab->elf.sgotplt;
cbe950e9
L
3347 }
3348 else
3349 {
6de2ae4a
L
3350 plt = htab->elf.iplt;
3351 gotplt = htab->elf.igotplt;
cbe950e9
L
3352 }
3353
3354 relocation = (plt->output_section->vma
3355 + plt->output_offset + h->plt.offset);
3356
3357 switch (r_type)
3358 {
3359 default:
4c544807
L
3360 if (h->root.root.string)
3361 name = h->root.root.string;
3362 else
3363 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3364 NULL);
cbe950e9
L
3365 (*_bfd_error_handler)
3366 (_("%B: relocation %s against STT_GNU_IFUNC "
3367 "symbol `%s' isn't handled by %s"), input_bfd,
3368 elf_howto_table[r_type].name,
4c544807 3369 name, __FUNCTION__);
cbe950e9
L
3370 bfd_set_error (bfd_error_bad_value);
3371 return FALSE;
3372
3373 case R_386_32:
710ab287 3374 /* Generate dynamic relcoation only when there is a
c293fa49 3375 non-GOT reference in a shared object. */
710ab287
L
3376 if (info->shared && h->non_got_ref)
3377 {
3378 Elf_Internal_Rela outrel;
710ab287
L
3379 asection *sreloc;
3380 bfd_vma offset;
3381
c25bc9fc
L
3382 /* Need a dynamic relocation to get the real function
3383 adddress. */
710ab287
L
3384 offset = _bfd_elf_section_offset (output_bfd,
3385 info,
3386 input_section,
3387 rel->r_offset);
3388 if (offset == (bfd_vma) -1
3389 || offset == (bfd_vma) -2)
3390 abort ();
3391
3392 outrel.r_offset = (input_section->output_section->vma
3393 + input_section->output_offset
3394 + offset);
3395
3396 if (h->dynindx == -1
44c4ea11
L
3397 || h->forced_local
3398 || info->executable)
710ab287
L
3399 {
3400 /* This symbol is resolved locally. */
56b8aada
L
3401 outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3402 bfd_put_32 (output_bfd,
3403 (h->root.u.def.value
3404 + h->root.u.def.section->output_section->vma
3405 + h->root.u.def.section->output_offset),
3406 contents + offset);
710ab287
L
3407 }
3408 else
56b8aada 3409 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
710ab287 3410
6de2ae4a 3411 sreloc = htab->elf.irelifunc;
59d6ffb2 3412 elf_append_rel (output_bfd, sreloc, &outrel);
710ab287
L
3413
3414 /* If this reloc is against an external symbol, we
3415 do not want to fiddle with the addend. Otherwise,
3416 we need to include the symbol value so that it
3417 becomes an addend for the dynamic reloc. For an
3418 internal symbol, we have updated addend. */
56b8aada 3419 continue;
710ab287 3420 }
d59a60e9 3421 /* FALLTHROUGH */
cbe950e9
L
3422 case R_386_PC32:
3423 case R_386_PLT32:
3424 goto do_relocation;
3425
3426 case R_386_GOT32:
6de2ae4a 3427 base_got = htab->elf.sgot;
cbe950e9
L
3428 off = h->got.offset;
3429
7afd84dc 3430 if (base_got == NULL)
cbe950e9
L
3431 abort ();
3432
7afd84dc 3433 if (off == (bfd_vma) -1)
cbe950e9 3434 {
7afd84dc
L
3435 /* We can't use h->got.offset here to save state, or
3436 even just remember the offset, as finish_dynamic_symbol
3437 would use that as offset into .got. */
6bbec505 3438
6de2ae4a 3439 if (htab->elf.splt != NULL)
7afd84dc 3440 {
25e762b9 3441 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3442 off = (plt_index + 3) * 4;
6de2ae4a 3443 base_got = htab->elf.sgotplt;
7afd84dc 3444 }
cbe950e9
L
3445 else
3446 {
25e762b9 3447 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3448 off = plt_index * 4;
6de2ae4a 3449 base_got = htab->elf.igotplt;
7afd84dc
L
3450 }
3451
3452 if (h->dynindx == -1
3453 || h->forced_local
3454 || info->symbolic)
3455 {
3456 /* This references the local defitionion. We must
3457 initialize this entry in the global offset table.
3458 Since the offset must always be a multiple of 8,
3459 we use the least significant bit to record
3460 whether we have initialized it already.
3461
3462 When doing a dynamic link, we create a .rela.got
3463 relocation entry to initialize the value. This
3464 is done in the finish_dynamic_symbol routine. */
3465 if ((off & 1) != 0)
3466 off &= ~1;
3467 else
3468 {
3469 bfd_put_32 (output_bfd, relocation,
3470 base_got->contents + off);
3471 h->got.offset |= 1;
3472 }
cbe950e9 3473 }
cbe950e9 3474
7afd84dc 3475 relocation = off;
cbe950e9 3476
7afd84dc 3477 /* Adjust for static executables. */
6de2ae4a 3478 if (htab->elf.splt == NULL)
7afd84dc
L
3479 relocation += gotplt->output_offset;
3480 }
3481 else
0018b0a3
L
3482 {
3483 relocation = (base_got->output_section->vma
3484 + base_got->output_offset + off
3485 - gotplt->output_section->vma
3486 - gotplt->output_offset);
3487 /* Adjust for static executables. */
6de2ae4a 3488 if (htab->elf.splt == NULL)
0018b0a3
L
3489 relocation += gotplt->output_offset;
3490 }
3491
cbe950e9
L
3492 goto do_relocation;
3493
3494 case R_386_GOTOFF:
3495 relocation -= (gotplt->output_section->vma
3496 + gotplt->output_offset);
3497 goto do_relocation;
3498 }
3499 }
3500
252b5132
RH
3501 switch (r_type)
3502 {
3503 case R_386_GOT32:
3504 /* Relocation is to the entry for this symbol in the global
3505 offset table. */
6de2ae4a 3506 if (htab->elf.sgot == NULL)
ffb2e45b 3507 abort ();
252b5132
RH
3508
3509 if (h != NULL)
3510 {
b34976b6 3511 bfd_boolean dyn;
252b5132
RH
3512
3513 off = h->got.offset;
ebe50bae 3514 dyn = htab->elf.dynamic_sections_created;
26e41594 3515 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
252b5132 3516 || (info->shared
586119b3 3517 && SYMBOL_REFERENCES_LOCAL (info, h))
ef5aade5
L
3518 || (ELF_ST_VISIBILITY (h->other)
3519 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH
3520 {
3521 /* This is actually a static link, or it is a
3522 -Bsymbolic link and the symbol is defined
3523 locally, or the symbol was forced to be local
3524 because of a version file. We must initialize
3525 this entry in the global offset table. Since the
3526 offset must always be a multiple of 4, we use the
3527 least significant bit to record whether we have
3528 initialized it already.
3529
3530 When doing a dynamic link, we create a .rel.got
3531 relocation entry to initialize the value. This
3532 is done in the finish_dynamic_symbol routine. */
3533 if ((off & 1) != 0)
3534 off &= ~1;
3535 else
3536 {
3537 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3538 htab->elf.sgot->contents + off);
252b5132
RH
3539 h->got.offset |= 1;
3540 }
3541 }
8c694914 3542 else
b34976b6 3543 unresolved_reloc = FALSE;
252b5132
RH
3544 }
3545 else
3546 {
ffb2e45b
AM
3547 if (local_got_offsets == NULL)
3548 abort ();
252b5132
RH
3549
3550 off = local_got_offsets[r_symndx];
3551
3552 /* The offset must always be a multiple of 4. We use
83be169b
AM
3553 the least significant bit to record whether we have
3554 already generated the necessary reloc. */
252b5132
RH
3555 if ((off & 1) != 0)
3556 off &= ~1;
3557 else
3558 {
6725bdbf 3559 bfd_put_32 (output_bfd, relocation,
6de2ae4a 3560 htab->elf.sgot->contents + off);
252b5132
RH
3561
3562 if (info->shared)
3563 {
947216bf
AM
3564 asection *s;
3565 Elf_Internal_Rela outrel;
252b5132 3566
6de2ae4a 3567 s = htab->elf.srelgot;
947216bf 3568 if (s == NULL)
ffb2e45b 3569 abort ();
252b5132 3570
6de2ae4a
L
3571 outrel.r_offset = (htab->elf.sgot->output_section->vma
3572 + htab->elf.sgot->output_offset
252b5132
RH
3573 + off);
3574 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
59d6ffb2 3575 elf_append_rel (output_bfd, s, &outrel);
252b5132
RH
3576 }
3577
3578 local_got_offsets[r_symndx] |= 1;
3579 }
252b5132
RH
3580 }
3581
ffb2e45b
AM
3582 if (off >= (bfd_vma) -2)
3583 abort ();
3584
6de2ae4a
L
3585 relocation = htab->elf.sgot->output_section->vma
3586 + htab->elf.sgot->output_offset + off
3587 - htab->elf.sgotplt->output_section->vma
3588 - htab->elf.sgotplt->output_offset;
252b5132
RH
3589 break;
3590
3591 case R_386_GOTOFF:
3592 /* Relocation is relative to the start of the global offset
3593 table. */
3594
90f487df
L
3595 /* Check to make sure it isn't a protected function symbol
3596 for shared library since it may not be local when used
41bed6dd
L
3597 as function address. We also need to make sure that a
3598 symbol is defined locally. */
3599 if (info->shared && h)
90f487df 3600 {
41bed6dd
L
3601 if (!h->def_regular)
3602 {
3603 const char *v;
3604
3605 switch (ELF_ST_VISIBILITY (h->other))
3606 {
3607 case STV_HIDDEN:
3608 v = _("hidden symbol");
3609 break;
3610 case STV_INTERNAL:
3611 v = _("internal symbol");
3612 break;
3613 case STV_PROTECTED:
3614 v = _("protected symbol");
3615 break;
3616 default:
3617 v = _("symbol");
3618 break;
3619 }
3620
3621 (*_bfd_error_handler)
3622 (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3623 input_bfd, v, h->root.root.string);
3624 bfd_set_error (bfd_error_bad_value);
3625 return FALSE;
3626 }
3627 else if (!info->executable
bdb892b9 3628 && !SYMBOLIC_BIND (info, h)
41bed6dd
L
3629 && h->type == STT_FUNC
3630 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3631 {
3632 (*_bfd_error_handler)
3633 (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3634 input_bfd, h->root.root.string);
3635 bfd_set_error (bfd_error_bad_value);
3636 return FALSE;
3637 }
90f487df
L
3638 }
3639
8c37241b
JJ
3640 /* Note that sgot is not involved in this
3641 calculation. We always want the start of .got.plt. If we
3642 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
252b5132
RH
3643 permitted by the ABI, we might have to change this
3644 calculation. */
6de2ae4a
L
3645 relocation -= htab->elf.sgotplt->output_section->vma
3646 + htab->elf.sgotplt->output_offset;
252b5132
RH
3647 break;
3648
3649 case R_386_GOTPC:
3650 /* Use global offset table as symbol value. */
6de2ae4a
L
3651 relocation = htab->elf.sgotplt->output_section->vma
3652 + htab->elf.sgotplt->output_offset;
b34976b6 3653 unresolved_reloc = FALSE;
252b5132
RH
3654 break;
3655
3656 case R_386_PLT32:
3657 /* Relocation is to the entry for this symbol in the
3658 procedure linkage table. */
3659
dd5724d5 3660 /* Resolve a PLT32 reloc against a local symbol directly,
83be169b 3661 without using the procedure linkage table. */
252b5132
RH
3662 if (h == NULL)
3663 break;
3664
dd5724d5 3665 if (h->plt.offset == (bfd_vma) -1
6de2ae4a 3666 || htab->elf.splt == NULL)
252b5132
RH
3667 {
3668 /* We didn't make a PLT entry for this symbol. This
83be169b
AM
3669 happens when statically linking PIC code, or when
3670 using -Bsymbolic. */
252b5132
RH
3671 break;
3672 }
3673
6de2ae4a
L
3674 relocation = (htab->elf.splt->output_section->vma
3675 + htab->elf.splt->output_offset
252b5132 3676 + h->plt.offset);
b34976b6 3677 unresolved_reloc = FALSE;
252b5132
RH
3678 break;
3679
1788fc08 3680 case R_386_SIZE32:
1788fc08
L
3681 /* Set to symbol size. */
3682 relocation = st_size;
3683 /* Fall through. */
3684
252b5132
RH
3685 case R_386_32:
3686 case R_386_PC32:
3348747a
NS
3687 if ((input_section->flags & SEC_ALLOC) == 0
3688 || is_vxworks_tls)
ec338859
AM
3689 break;
3690
12d0ee4a 3691 if ((info->shared
ef5aade5
L
3692 && (h == NULL
3693 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3694 || h->root.type != bfd_link_hash_undefweak)
1788fc08 3695 && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
f6c52c13 3696 || !SYMBOL_CALLS_LOCAL (info, h)))
a23b6845
AM
3697 || (ELIMINATE_COPY_RELOCS
3698 && !info->shared
12d0ee4a
AM
3699 && h != NULL
3700 && h->dynindx != -1
f5385ebf
AM
3701 && !h->non_got_ref
3702 && ((h->def_dynamic
3703 && !h->def_regular)
28d0b90e 3704 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3705 || h->root.type == bfd_link_hash_undefined)))
252b5132 3706 {
947216bf 3707 Elf_Internal_Rela outrel;
b34976b6 3708 bfd_boolean skip, relocate;
0c715baa 3709 asection *sreloc;
252b5132
RH
3710
3711 /* When generating a shared object, these relocations
3712 are copied into the output file to be resolved at run
3713 time. */
3714
b34976b6
AM
3715 skip = FALSE;
3716 relocate = FALSE;
252b5132 3717
c629eae0
JJ
3718 outrel.r_offset =
3719 _bfd_elf_section_offset (output_bfd, info, input_section,
3720 rel->r_offset);
3721 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3722 skip = TRUE;
0bb2d96a 3723 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3724 skip = TRUE, relocate = TRUE;
252b5132
RH
3725 outrel.r_offset += (input_section->output_section->vma
3726 + input_section->output_offset);
3727
3728 if (skip)
0bb2d96a 3729 memset (&outrel, 0, sizeof outrel);
5a15f56f
AM
3730 else if (h != NULL
3731 && h->dynindx != -1
3732 && (r_type == R_386_PC32
3733 || !info->shared
55255dae 3734 || !SYMBOLIC_BIND (info, h)
f5385ebf 3735 || !h->def_regular))
0bb2d96a 3736 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH
3737 else
3738 {
5a15f56f 3739 /* This symbol is local, or marked to become local. */
b34976b6 3740 relocate = TRUE;
5a15f56f 3741 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
252b5132
RH
3742 }
3743
cbe950e9 3744 sreloc = elf_section_data (input_section)->sreloc;
e7c33416 3745
62d78908
L
3746 if (sreloc == NULL || sreloc->contents == NULL)
3747 {
3748 r = bfd_reloc_notsupported;
3749 goto check_relocation_error;
3750 }
0c715baa 3751
59d6ffb2 3752 elf_append_rel (output_bfd, sreloc, &outrel);
252b5132
RH
3753
3754 /* If this reloc is against an external symbol, we do
3755 not want to fiddle with the addend. Otherwise, we
3756 need to include the symbol value so that it becomes
3757 an addend for the dynamic reloc. */
0f88be7a 3758 if (! relocate)
252b5132
RH
3759 continue;
3760 }
252b5132
RH
3761 break;
3762
37e55690 3763 case R_386_TLS_IE:
1d85728f 3764 if (!info->executable)
37e55690 3765 {
947216bf 3766 Elf_Internal_Rela outrel;
37e55690 3767 asection *sreloc;
37e55690
JJ
3768
3769 outrel.r_offset = rel->r_offset
3770 + input_section->output_section->vma
3771 + input_section->output_offset;
3772 outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3773 sreloc = elf_section_data (input_section)->sreloc;
3774 if (sreloc == NULL)
3775 abort ();
59d6ffb2 3776 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ
3777 }
3778 /* Fall through */
3779
13ae64f3 3780 case R_386_TLS_GD:
67a4f2b7
AO
3781 case R_386_TLS_GOTDESC:
3782 case R_386_TLS_DESC_CALL:
13ae64f3 3783 case R_386_TLS_IE_32:
37e55690 3784 case R_386_TLS_GOTIE:
13ae64f3
JJ
3785 tls_type = GOT_UNKNOWN;
3786 if (h == NULL && local_got_offsets)
3787 tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3788 else if (h != NULL)
142411ca 3789 tls_type = elf_i386_hash_entry(h)->tls_type;
37e55690
JJ
3790 if (tls_type == GOT_TLS_IE)
3791 tls_type = GOT_TLS_IE_NEG;
142411ca
L
3792
3793 if (! elf_i386_tls_transition (info, input_bfd,
3794 input_section, contents,
3795 symtab_hdr, sym_hashes,
3796 &r_type, tls_type, rel,
4c544807 3797 relend, h, r_symndx))
142411ca 3798 return FALSE;
13ae64f3
JJ
3799
3800 if (r_type == R_386_TLS_LE_32)
3801 {
82e51918 3802 BFD_ASSERT (! unresolved_reloc);
13ae64f3
JJ
3803 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3804 {
142411ca 3805 unsigned int type;
13ae64f3
JJ
3806 bfd_vma roff;
3807
3808 /* GD->LE transition. */
13ae64f3 3809 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ
3810 if (type == 0x04)
3811 {
3812 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3813 Change it into:
3814 movl %gs:0, %eax; subl $foo@tpoff, %eax
3815 (6 byte form of subl). */
13ae64f3
JJ
3816 memcpy (contents + rel->r_offset - 3,
3817 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
142411ca 3818 roff = rel->r_offset + 5;
13ae64f3
JJ
3819 }
3820 else
3821 {
142411ca
L
3822 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3823 Change it into:
3824 movl %gs:0, %eax; subl $foo@tpoff, %eax
3825 (6 byte form of subl). */
3826 memcpy (contents + rel->r_offset - 2,
3827 "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3828 roff = rel->r_offset + 6;
13ae64f3 3829 }
eb4ff4d6 3830 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
13ae64f3 3831 contents + roff);
a3fadc9a 3832 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ
3833 rel++;
3834 continue;
3835 }
67a4f2b7
AO
3836 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3837 {
3838 /* GDesc -> LE transition.
3839 It's originally something like:
3840 leal x@tlsdesc(%ebx), %eax
3841
3842 leal x@ntpoff, %eax
3843
3844 Registers other than %eax may be set up here. */
3845
142411ca 3846 unsigned int val;
67a4f2b7
AO
3847 bfd_vma roff;
3848
67a4f2b7 3849 roff = rel->r_offset;
67a4f2b7 3850 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO
3851
3852 /* Now modify the instruction as appropriate. */
3853 /* aoliva FIXME: remove the above and xor the byte
3854 below with 0x86. */
3855 bfd_put_8 (output_bfd, val ^ 0x86,
3856 contents + roff - 1);
eb4ff4d6 3857 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
67a4f2b7
AO
3858 contents + roff);
3859 continue;
3860 }
3861 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3862 {
3863 /* GDesc -> LE transition.
3864 It's originally:
3865 call *(%eax)
3866 Turn it into:
142411ca 3867 xchg %ax,%ax */
67a4f2b7 3868
67a4f2b7 3869 bfd_vma roff;
6bbec505 3870
67a4f2b7 3871 roff = rel->r_offset;
10efb593 3872 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO
3873 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3874 continue;
3875 }
37e55690 3876 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
13ae64f3 3877 {
142411ca 3878 unsigned int val;
13ae64f3
JJ
3879
3880 /* IE->LE transition:
37e55690
JJ
3881 Originally it can be one of:
3882 movl foo, %eax
3883 movl foo, %reg
3884 addl foo, %reg
3885 We change it into:
3886 movl $foo, %eax
3887 movl $foo, %reg
3888 addl $foo, %reg. */
37e55690 3889 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
37e55690
JJ
3890 if (val == 0xa1)
3891 {
3892 /* movl foo, %eax. */
55fd94b0
AM
3893 bfd_put_8 (output_bfd, 0xb8,
3894 contents + rel->r_offset - 1);
37e55690 3895 }
299bf759 3896 else
37e55690 3897 {
142411ca
L
3898 unsigned int type;
3899
55fd94b0
AM
3900 type = bfd_get_8 (input_bfd,
3901 contents + rel->r_offset - 2);
299bf759 3902 switch (type)
26e41594 3903 {
299bf759
L
3904 case 0x8b:
3905 /* movl */
299bf759
L
3906 bfd_put_8 (output_bfd, 0xc7,
3907 contents + rel->r_offset - 2);
3908 bfd_put_8 (output_bfd,
3909 0xc0 | ((val >> 3) & 7),
3910 contents + rel->r_offset - 1);
3911 break;
3912 case 0x03:
3913 /* addl */
299bf759
L
3914 bfd_put_8 (output_bfd, 0x81,
3915 contents + rel->r_offset - 2);
3916 bfd_put_8 (output_bfd,
3917 0xc0 | ((val >> 3) & 7),
3918 contents + rel->r_offset - 1);
3919 break;
3920 default:
3921 BFD_FAIL ();
3922 break;
26e41594 3923 }
37e55690 3924 }
eb4ff4d6 3925 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ
3926 contents + rel->r_offset);
3927 continue;
3928 }
3929 else
3930 {
3931 unsigned int val, type;
3932
3933 /* {IE_32,GOTIE}->LE transition:
3934 Originally it can be one of:
13ae64f3 3935 subl foo(%reg1), %reg2
13ae64f3 3936 movl foo(%reg1), %reg2
37e55690 3937 addl foo(%reg1), %reg2
13ae64f3
JJ
3938 We change it into:
3939 subl $foo, %reg2
37e55690
JJ
3940 movl $foo, %reg2 (6 byte form)
3941 addl $foo, %reg2. */
13ae64f3
JJ
3942 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3943 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
13ae64f3
JJ
3944 if (type == 0x8b)
3945 {
3946 /* movl */
13ae64f3
JJ
3947 bfd_put_8 (output_bfd, 0xc7,
3948 contents + rel->r_offset - 2);
3949 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3950 contents + rel->r_offset - 1);
3951 }
3952 else if (type == 0x2b)
3953 {
3954 /* subl */
13ae64f3
JJ
3955 bfd_put_8 (output_bfd, 0x81,
3956 contents + rel->r_offset - 2);
3957 bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3958 contents + rel->r_offset - 1);
3959 }
37e55690
JJ
3960 else if (type == 0x03)
3961 {
3962 /* addl */
3963 bfd_put_8 (output_bfd, 0x81,
3964 contents + rel->r_offset - 2);
3965 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3966 contents + rel->r_offset - 1);
3967 }
13ae64f3
JJ
3968 else
3969 BFD_FAIL ();
37e55690 3970 if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
eb4ff4d6 3971 bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
37e55690
JJ
3972 contents + rel->r_offset);
3973 else
eb4ff4d6 3974 bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
37e55690 3975 contents + rel->r_offset);
13ae64f3
JJ
3976 continue;
3977 }
3978 }
3979
6de2ae4a 3980 if (htab->elf.sgot == NULL)
13ae64f3
JJ
3981 abort ();
3982
3983 if (h != NULL)
67a4f2b7
AO
3984 {
3985 off = h->got.offset;
3986 offplt = elf_i386_hash_entry (h)->tlsdesc_got;
3987 }
13ae64f3
JJ
3988 else
3989 {
3990 if (local_got_offsets == NULL)
3991 abort ();
3992
3993 off = local_got_offsets[r_symndx];
67a4f2b7 3994 offplt = local_tlsdesc_gotents[r_symndx];
13ae64f3
JJ
3995 }
3996
3997 if ((off & 1) != 0)
3998 off &= ~1;
26e41594 3999 else
13ae64f3 4000 {
947216bf 4001 Elf_Internal_Rela outrel;
91d6fa6a 4002 int dr_type;
67a4f2b7 4003 asection *sreloc;
13ae64f3 4004
6de2ae4a 4005 if (htab->elf.srelgot == NULL)
13ae64f3
JJ
4006 abort ();
4007
67a4f2b7
AO
4008 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4009
4010 if (GOT_TLS_GDESC_P (tls_type))
4011 {
59d6ffb2 4012 bfd_byte *loc;
67a4f2b7
AO
4013 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
4014 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
6de2ae4a
L
4015 <= htab->elf.sgotplt->size);
4016 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4017 + htab->elf.sgotplt->output_offset
67a4f2b7
AO
4018 + offplt
4019 + htab->sgotplt_jump_table_size);
6de2ae4a 4020 sreloc = htab->elf.srelplt;
67a4f2b7 4021 loc = sreloc->contents;
5ae0bfb6
RS
4022 loc += (htab->next_tls_desc_index++
4023 * sizeof (Elf32_External_Rel));
67a4f2b7 4024 BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
c3b02097 4025 <= sreloc->contents + sreloc->size);
67a4f2b7
AO
4026 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4027 if (indx == 0)
4028 {
4029 BFD_ASSERT (! unresolved_reloc);
4030 bfd_put_32 (output_bfd,
eb4ff4d6 4031 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4032 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO
4033 + htab->sgotplt_jump_table_size + 4);
4034 }
4035 else
4036 {
4037 bfd_put_32 (output_bfd, 0,
6de2ae4a 4038 htab->elf.sgotplt->contents + offplt
67a4f2b7
AO
4039 + htab->sgotplt_jump_table_size + 4);
4040 }
4041 }
4042
6de2ae4a 4043 sreloc = htab->elf.srelgot;
67a4f2b7 4044
6de2ae4a
L
4045 outrel.r_offset = (htab->elf.sgot->output_section->vma
4046 + htab->elf.sgot->output_offset + off);
13ae64f3 4047
67a4f2b7 4048 if (GOT_TLS_GD_P (tls_type))
13ae64f3 4049 dr_type = R_386_TLS_DTPMOD32;
67a4f2b7
AO
4050 else if (GOT_TLS_GDESC_P (tls_type))
4051 goto dr_done;
37e55690
JJ
4052 else if (tls_type == GOT_TLS_IE_POS)
4053 dr_type = R_386_TLS_TPOFF;
13ae64f3
JJ
4054 else
4055 dr_type = R_386_TLS_TPOFF32;
67a4f2b7 4056
37e55690 4057 if (dr_type == R_386_TLS_TPOFF && indx == 0)
eb4ff4d6
L
4058 bfd_put_32 (output_bfd,
4059 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4060 htab->elf.sgot->contents + off);
37e55690 4061 else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
23209a78 4062 bfd_put_32 (output_bfd,
eb4ff4d6 4063 elf_i386_dtpoff_base (info) - relocation,
6de2ae4a 4064 htab->elf.sgot->contents + off);
67a4f2b7 4065 else if (dr_type != R_386_TLS_DESC)
c366c25e 4066 bfd_put_32 (output_bfd, 0,
6de2ae4a 4067 htab->elf.sgot->contents + off);
13ae64f3 4068 outrel.r_info = ELF32_R_INFO (indx, dr_type);
67a4f2b7 4069
59d6ffb2 4070 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3 4071
67a4f2b7 4072 if (GOT_TLS_GD_P (tls_type))
13ae64f3
JJ
4073 {
4074 if (indx == 0)
4075 {
82e51918 4076 BFD_ASSERT (! unresolved_reloc);
13ae64f3 4077 bfd_put_32 (output_bfd,
eb4ff4d6 4078 relocation - elf_i386_dtpoff_base (info),
6de2ae4a 4079 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ
4080 }
4081 else
4082 {
4083 bfd_put_32 (output_bfd, 0,
6de2ae4a 4084 htab->elf.sgot->contents + off + 4);
13ae64f3
JJ
4085 outrel.r_info = ELF32_R_INFO (indx,
4086 R_386_TLS_DTPOFF32);
4087 outrel.r_offset += 4;
59d6ffb2 4088 elf_append_rel (output_bfd, sreloc, &outrel);
13ae64f3
JJ
4089 }
4090 }
37e55690
JJ
4091 else if (tls_type == GOT_TLS_IE_BOTH)
4092 {
4093 bfd_put_32 (output_bfd,
eb4ff4d6
L
4094 (indx == 0
4095 ? relocation - elf_i386_dtpoff_base (info)
4096 : 0),
6de2ae4a 4097 htab->elf.sgot->contents + off + 4);
37e55690
JJ
4098 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4099 outrel.r_offset += 4;
59d6ffb2 4100 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690 4101 }
13ae64f3 4102
67a4f2b7 4103 dr_done:
13ae64f3
JJ
4104 if (h != NULL)
4105 h->got.offset |= 1;
4106 else
4107 local_got_offsets[r_symndx] |= 1;
4108 }
4109
67a4f2b7
AO
4110 if (off >= (bfd_vma) -2
4111 && ! GOT_TLS_GDESC_P (tls_type))
13ae64f3 4112 abort ();
67a4f2b7
AO
4113 if (r_type == R_386_TLS_GOTDESC
4114 || r_type == R_386_TLS_DESC_CALL)
4115 {
4116 relocation = htab->sgotplt_jump_table_size + offplt;
4117 unresolved_reloc = FALSE;
4118 }
4119 else if (r_type == ELF32_R_TYPE (rel->r_info))
13ae64f3 4120 {
6de2ae4a
L
4121 bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
4122 + htab->elf.sgotplt->output_offset;
4123 relocation = htab->elf.sgot->output_section->vma
4124 + htab->elf.sgot->output_offset + off - g_o_t;
37e55690
JJ
4125 if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
4126 && tls_type == GOT_TLS_IE_BOTH)
4127 relocation += 4;
4128 if (r_type == R_386_TLS_IE)
8c37241b 4129 relocation += g_o_t;
b34976b6 4130 unresolved_reloc = FALSE;
13ae64f3 4131 }
67a4f2b7 4132 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
13ae64f3
JJ
4133 {
4134 unsigned int val, type;
4135 bfd_vma roff;
4136
4137 /* GD->IE transition. */
13ae64f3 4138 type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
13ae64f3
JJ
4139 val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
4140 if (type == 0x04)
4141 {
4142 /* leal foo(,%reg,1), %eax; call ___tls_get_addr
4143 Change it into:
4144 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3 4145 val >>= 3;
142411ca 4146 roff = rel->r_offset - 3;
13ae64f3
JJ
4147 }
4148 else
4149 {
4150 /* leal foo(%reg), %eax; call ___tls_get_addr; nop
4151 Change it into:
4152 movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
13ae64f3
JJ
4153 roff = rel->r_offset - 2;
4154 }
4155 memcpy (contents + roff,
4156 "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
4157 contents[roff + 7] = 0x80 | (val & 7);
37e55690
JJ
4158 /* If foo is used only with foo@gotntpoff(%reg) and
4159 foo@indntpoff, but not with foo@gottpoff(%reg), change
4160 subl $foo@gottpoff(%reg), %eax
4161 into:
4162 addl $foo@gotntpoff(%reg), %eax. */
ebcfb3c0
JJ
4163 if (tls_type == GOT_TLS_IE_POS)
4164 contents[roff + 6] = 0x03;
8c37241b 4165 bfd_put_32 (output_bfd,
6de2ae4a
L
4166 htab->elf.sgot->output_section->vma
4167 + htab->elf.sgot->output_offset + off
4168 - htab->elf.sgotplt->output_section->vma
4169 - htab->elf.sgotplt->output_offset,
13ae64f3
JJ
4170 contents + roff + 8);
4171 /* Skip R_386_PLT32. */
4172 rel++;
4173 continue;
4174 }
67a4f2b7
AO
4175 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
4176 {
4177 /* GDesc -> IE transition.
4178 It's originally something like:
4179 leal x@tlsdesc(%ebx), %eax
4180
4181 Change it to:
142411ca 4182 movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
67a4f2b7
AO
4183 or:
4184 movl x@gottpoff(%ebx), %eax # before negl %eax
4185
4186 Registers other than %eax may be set up here. */
4187
67a4f2b7
AO
4188 bfd_vma roff;
4189
4190 /* First, make sure it's a leal adding ebx to a 32-bit
4191 offset into any register, although it's probably
4192 almost always going to be eax. */
4193 roff = rel->r_offset;
67a4f2b7
AO
4194
4195 /* Now modify the instruction as appropriate. */
4196 /* To turn a leal into a movl in the form we use it, it
4197 suffices to change the first byte from 0x8d to 0x8b.
4198 aoliva FIXME: should we decide to keep the leal, all
4199 we have to do is remove the statement below, and
4200 adjust the relaxation of R_386_TLS_DESC_CALL. */
4201 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4202
4203 if (tls_type == GOT_TLS_IE_BOTH)
4204 off += 4;
4205
4206 bfd_put_32 (output_bfd,
6de2ae4a
L
4207 htab->elf.sgot->output_section->vma
4208 + htab->elf.sgot->output_offset + off
4209 - htab->elf.sgotplt->output_section->vma
4210 - htab->elf.sgotplt->output_offset,
67a4f2b7
AO
4211 contents + roff);
4212 continue;
4213 }
4214 else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
4215 {
4216 /* GDesc -> IE transition.
4217 It's originally:
4218 call *(%eax)
4219
4220 Change it to:
142411ca 4221 xchg %ax,%ax
67a4f2b7
AO
4222 or
4223 negl %eax
4224 depending on how we transformed the TLS_GOTDESC above.
4225 */
4226
67a4f2b7
AO
4227 bfd_vma roff;
4228
67a4f2b7 4229 roff = rel->r_offset;
67a4f2b7
AO
4230
4231 /* Now modify the instruction as appropriate. */
4232 if (tls_type != GOT_TLS_IE_NEG)
4233 {
10efb593
L
4234 /* xchg %ax,%ax */
4235 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO
4236 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4237 }
4238 else
4239 {
4240 /* negl %eax */
4241 bfd_put_8 (output_bfd, 0xf7, contents + roff);
4242 bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
4243 }
4244
4245 continue;
4246 }
4247 else
4248 BFD_ASSERT (FALSE);
13ae64f3
JJ
4249 break;
4250
4251 case R_386_TLS_LDM:
142411ca
L
4252 if (! elf_i386_tls_transition (info, input_bfd,
4253 input_section, contents,
4254 symtab_hdr, sym_hashes,
4255 &r_type, GOT_UNKNOWN, rel,
4c544807 4256 relend, h, r_symndx))
142411ca 4257 return FALSE;
13ae64f3 4258
142411ca
L
4259 if (r_type != R_386_TLS_LDM)
4260 {
13ae64f3 4261 /* LD->LE transition:
13ae64f3
JJ
4262 leal foo(%reg), %eax; call ___tls_get_addr.
4263 We change it into:
4264 movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
142411ca 4265 BFD_ASSERT (r_type == R_386_TLS_LE_32);
13ae64f3
JJ
4266 memcpy (contents + rel->r_offset - 2,
4267 "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
a3fadc9a 4268 /* Skip R_386_PC32/R_386_PLT32. */
13ae64f3
JJ
4269 rel++;
4270 continue;
4271 }
4272
6de2ae4a 4273 if (htab->elf.sgot == NULL)
13ae64f3
JJ
4274 abort ();
4275
4276 off = htab->tls_ldm_got.offset;
4277 if (off & 1)
4278 off &= ~1;
4279 else
4280 {
947216bf 4281 Elf_Internal_Rela outrel;
13ae64f3 4282
6de2ae4a 4283 if (htab->elf.srelgot == NULL)
13ae64f3
JJ
4284 abort ();
4285
6de2ae4a
L
4286 outrel.r_offset = (htab->elf.sgot->output_section->vma
4287 + htab->elf.sgot->output_offset + off);
13ae64f3
JJ
4288
4289 bfd_put_32 (output_bfd, 0,
6de2ae4a 4290 htab->elf.sgot->contents + off);
13ae64f3 4291 bfd_put_32 (output_bfd, 0,
6de2ae4a 4292 htab->elf.sgot->contents + off + 4);
13ae64f3 4293 outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
59d6ffb2 4294 elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
13ae64f3
JJ
4295 htab->tls_ldm_got.offset |= 1;
4296 }
6de2ae4a
L
4297 relocation = htab->elf.sgot->output_section->vma
4298 + htab->elf.sgot->output_offset + off
4299 - htab->elf.sgotplt->output_section->vma
4300 - htab->elf.sgotplt->output_offset;
b34976b6 4301 unresolved_reloc = FALSE;
13ae64f3
JJ
4302 break;
4303
4304 case R_386_TLS_LDO_32:
959b0961 4305 if (!info->executable || (input_section->flags & SEC_CODE) == 0)
eb4ff4d6 4306 relocation -= elf_i386_dtpoff_base (info);
13ae64f3
JJ
4307 else
4308 /* When converting LDO to LE, we must negate. */
eb4ff4d6 4309 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ
4310 break;
4311
4312 case R_386_TLS_LE_32:
13ae64f3 4313 case R_386_TLS_LE:
1d85728f 4314 if (!info->executable)
37e55690 4315 {
947216bf 4316 Elf_Internal_Rela outrel;
37e55690 4317 asection *sreloc;
37e55690
JJ
4318
4319 outrel.r_offset = rel->r_offset
4320 + input_section->output_section->vma
4321 + input_section->output_offset;
4322 if (h != NULL && h->dynindx != -1)
4323 indx = h->dynindx;
4324 else
4325 indx = 0;
4326 if (r_type == R_386_TLS_LE_32)
4327 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4328 else
4329 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4330 sreloc = elf_section_data (input_section)->sreloc;
4331 if (sreloc == NULL)
4332 abort ();
59d6ffb2 4333 elf_append_rel (output_bfd, sreloc, &outrel);
37e55690
JJ
4334 if (indx)
4335 continue;
4336 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4337 relocation = elf_i386_dtpoff_base (info) - relocation;
37e55690 4338 else
eb4ff4d6 4339 relocation -= elf_i386_dtpoff_base (info);
37e55690
JJ
4340 }
4341 else if (r_type == R_386_TLS_LE_32)
eb4ff4d6 4342 relocation = elf_i386_tpoff (info, relocation);
37e55690 4343 else
eb4ff4d6 4344 relocation = -elf_i386_tpoff (info, relocation);
13ae64f3
JJ
4345 break;
4346
252b5132
RH
4347 default:
4348 break;
4349 }
4350
239e1f3a
AM
4351 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4352 because such sections are not SEC_ALLOC and thus ld.so will
4353 not process them. */
8c694914 4354 if (unresolved_reloc
239e1f3a 4355 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
4356 && h->def_dynamic)
4357 && _bfd_elf_section_offset (output_bfd, info, input_section,
4358 rel->r_offset) != (bfd_vma) -1)
6a30718d
JJ
4359 {
4360 (*_bfd_error_handler)
843fe662 4361 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
d003868e
AM
4362 input_bfd,
4363 input_section,
6a30718d 4364 (long) rel->r_offset,
843fe662 4365 howto->name,
6a30718d 4366 h->root.root.string);
b34976b6 4367 return FALSE;
6a30718d 4368 }
83be169b 4369
cbe950e9 4370do_relocation:
252b5132
RH
4371 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4372 contents, rel->r_offset,
55fd94b0 4373 relocation, 0);
252b5132 4374
62d78908 4375check_relocation_error:
cf5c0c5b 4376 if (r != bfd_reloc_ok)
252b5132 4377 {
cf5c0c5b 4378 const char *name;
ffb2e45b 4379
cf5c0c5b
AM
4380 if (h != NULL)
4381 name = h->root.root.string;
4382 else
4383 {
4384 name = bfd_elf_string_from_elf_section (input_bfd,
4385 symtab_hdr->sh_link,
4386 sym->st_name);
4387 if (name == NULL)
b34976b6 4388 return FALSE;
cf5c0c5b
AM
4389 if (*name == '\0')
4390 name = bfd_section_name (input_bfd, sec);
4391 }
ffb2e45b 4392
cf5c0c5b
AM
4393 if (r == bfd_reloc_overflow)
4394 {
cf5c0c5b 4395 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L
4396 (info, (h ? &h->root : NULL), name, howto->name,
4397 (bfd_vma) 0, input_bfd, input_section,
4398 rel->r_offset)))
b34976b6 4399 return FALSE;
cf5c0c5b
AM
4400 }
4401 else
4402 {
4403 (*_bfd_error_handler)
d003868e
AM
4404 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4405 input_bfd, input_section,
cf5c0c5b 4406 (long) rel->r_offset, name, (int) r);
b34976b6 4407 return FALSE;
cf5c0c5b 4408 }
252b5132
RH
4409 }
4410 }
4411
b34976b6 4412 return TRUE;
252b5132
RH
4413}
4414
4415/* Finish up dynamic symbol handling. We set the contents of various
4416 dynamic sections here. */
4417
b34976b6 4418static bfd_boolean
55fd94b0
AM
4419elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4420 struct bfd_link_info *info,
4421 struct elf_link_hash_entry *h,
4422 Elf_Internal_Sym *sym)
252b5132 4423{
6725bdbf 4424 struct elf_i386_link_hash_table *htab;
25e762b9
RM
4425 unsigned plt_entry_size;
4426 const struct elf_i386_backend_data *abed;
252b5132 4427
6725bdbf 4428 htab = elf_i386_hash_table (info);
4dfe6ac6
NC
4429 if (htab == NULL)
4430 return FALSE;
252b5132 4431
25e762b9
RM
4432 abed = get_elf_i386_backend_data (output_bfd);
4433 plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
4434
252b5132
RH
4435 if (h->plt.offset != (bfd_vma) -1)
4436 {
252b5132
RH
4437 bfd_vma plt_index;
4438 bfd_vma got_offset;
947216bf
AM
4439 Elf_Internal_Rela rel;
4440 bfd_byte *loc;
cbe950e9
L
4441 asection *plt, *gotplt, *relplt;
4442
4443 /* When building a static executable, use .iplt, .igot.plt and
4444 .rel.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4445 if (htab->elf.splt != NULL)
cbe950e9 4446 {
6de2ae4a
L
4447 plt = htab->elf.splt;
4448 gotplt = htab->elf.sgotplt;
4449 relplt = htab->elf.srelplt;
cbe950e9
L
4450 }
4451 else
4452 {
6de2ae4a
L
4453 plt = htab->elf.iplt;
4454 gotplt = htab->elf.igotplt;
4455 relplt = htab->elf.irelplt;
cbe950e9 4456 }
252b5132
RH
4457
4458 /* This symbol has an entry in the procedure linkage table. Set
4459 it up. */
4460
cbe950e9
L
4461 if ((h->dynindx == -1
4462 && !((h->forced_local || info->executable)
4463 && h->def_regular
4464 && h->type == STT_GNU_IFUNC))
4465 || plt == NULL
4466 || gotplt == NULL
4467 || relplt == NULL)
cec7f46a 4468 abort ();
252b5132
RH
4469
4470 /* Get the index in the procedure linkage table which
4471 corresponds to this symbol. This is the index of this symbol
4472 in all the symbols for which we are making plt entries. The
cbe950e9 4473 first entry in the procedure linkage table is reserved.
252b5132 4474
cbe950e9 4475 Get the offset into the .got table of the entry that
252b5132 4476 corresponds to this function. Each .got entry is 4 bytes.
cbe950e9 4477 The first three are reserved.
6bbec505 4478
cbe950e9
L
4479 For static executables, we don't reserve anything. */
4480
6de2ae4a 4481 if (plt == htab->elf.splt)
cbe950e9 4482 {
e1f98742
L
4483 got_offset = h->plt.offset / plt_entry_size - 1;
4484 got_offset = (got_offset + 3) * 4;
cbe950e9
L
4485 }
4486 else
4487 {
e1f98742
L
4488 got_offset = h->plt.offset / plt_entry_size;
4489 got_offset = got_offset * 4;
cbe950e9 4490 }
252b5132
RH
4491
4492 /* Fill in the entry in the procedure linkage table. */
4493 if (! info->shared)
4494 {
25e762b9
RM
4495 memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
4496 abed->plt->plt_entry_size);
252b5132 4497 bfd_put_32 (output_bfd,
cbe950e9
L
4498 (gotplt->output_section->vma
4499 + gotplt->output_offset
252b5132 4500 + got_offset),
25e762b9
RM
4501 plt->contents + h->plt.offset
4502 + abed->plt->plt_got_offset);
eac338cf 4503
25e762b9 4504 if (abed->is_vxworks)
eac338cf
PB
4505 {
4506 int s, k, reloc_index;
4507
4508 /* Create the R_386_32 relocation referencing the GOT
4509 for this PLT entry. */
4510
4511 /* S: Current slot number (zero-based). */
25e762b9
RM
4512 s = ((h->plt.offset - abed->plt->plt_entry_size)
4513 / abed->plt->plt_entry_size);
eac338cf
PB
4514 /* K: Number of relocations for PLTResolve. */
4515 if (info->shared)
4516 k = PLTRESOLVE_RELOCS_SHLIB;
4517 else
4518 k = PLTRESOLVE_RELOCS;
4519 /* Skip the PLTresolve relocations, and the relocations for
4520 the other PLT slots. */
4521 reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4522 loc = (htab->srelplt2->contents + reloc_index
4523 * sizeof (Elf32_External_Rel));
4524
6de2ae4a
L
4525 rel.r_offset = (htab->elf.splt->output_section->vma
4526 + htab->elf.splt->output_offset
eac338cf 4527 + h->plt.offset + 2),
7325306f 4528 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB
4529 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4530
4531 /* Create the R_386_32 relocation referencing the beginning of
4532 the PLT for this GOT entry. */
6de2ae4a
L
4533 rel.r_offset = (htab->elf.sgotplt->output_section->vma
4534 + htab->elf.sgotplt->output_offset
eac338cf 4535 + got_offset);
7325306f 4536 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf 4537 bfd_elf32_swap_reloc_out (output_bfd, &rel,
13ca3149 4538 loc + sizeof (Elf32_External_Rel));
eac338cf 4539 }
252b5132
RH
4540 }
4541 else
4542 {
25e762b9
RM
4543 memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry,
4544 abed->plt->plt_entry_size);
252b5132 4545 bfd_put_32 (output_bfd, got_offset,
25e762b9
RM
4546 plt->contents + h->plt.offset
4547 + abed->plt->plt_got_offset);
252b5132
RH
4548 }
4549
252b5132
RH
4550 /* Fill in the entry in the global offset table. */
4551 bfd_put_32 (output_bfd,
cbe950e9
L
4552 (plt->output_section->vma
4553 + plt->output_offset
252b5132 4554 + h->plt.offset
25e762b9 4555 + abed->plt->plt_lazy_offset),
cbe950e9 4556 gotplt->contents + got_offset);
252b5132
RH
4557
4558 /* Fill in the entry in the .rel.plt section. */
cbe950e9
L
4559 rel.r_offset = (gotplt->output_section->vma
4560 + gotplt->output_offset
252b5132 4561 + got_offset);
cbe950e9
L
4562 if (h->dynindx == -1
4563 || ((info->executable
4564 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4565 && h->def_regular
4566 && h->type == STT_GNU_IFUNC))
4567 {
4568 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4569 R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
4570 in the .got.plt section. */
4571 bfd_put_32 (output_bfd,
23209a78 4572 (h->root.u.def.value
cbe950e9
L
4573 + h->root.u.def.section->output_section->vma
4574 + h->root.u.def.section->output_offset),
4575 gotplt->contents + got_offset);
4576 rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
e1f98742
L
4577 /* R_386_IRELATIVE comes last. */
4578 plt_index = htab->next_irelative_index--;
cbe950e9
L
4579 }
4580 else
e1f98742
L
4581 {
4582 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4583 plt_index = htab->next_jump_slot_index++;
4584 }
cbe950e9 4585 loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
0ac8d2ca 4586 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 4587
e1f98742
L
4588 /* Don't fill PLT entry for static executables. */
4589 if (plt == htab->elf.splt)
4590 {
4591 bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4592 plt->contents + h->plt.offset
4593 + abed->plt->plt_reloc_offset);
4594 bfd_put_32 (output_bfd, - (h->plt.offset
4595 + abed->plt->plt_plt_offset + 4),
4596 plt->contents + h->plt.offset
4597 + abed->plt->plt_plt_offset);
4598 }
4599
f5385ebf 4600 if (!h->def_regular)
252b5132
RH
4601 {
4602 /* Mark the symbol as undefined, rather than as defined in
c6585bbb
JJ
4603 the .plt section. Leave the value if there were any
4604 relocations where pointer equality matters (this is a clue
51b64d56
AM
4605 for the dynamic linker, to make function pointer
4606 comparisons work between an application and shared
c6585bbb
JJ
4607 library), otherwise set it to zero. If a function is only
4608 called from a binary, there is no need to slow down
4609 shared libraries because of that. */
252b5132 4610 sym->st_shndx = SHN_UNDEF;
f5385ebf 4611 if (!h->pointer_equality_needed)
c6585bbb 4612 sym->st_value = 0;
252b5132
RH
4613 }
4614 }
4615
13ae64f3 4616 if (h->got.offset != (bfd_vma) -1
67a4f2b7 4617 && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
37e55690 4618 && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
252b5132 4619 {
947216bf 4620 Elf_Internal_Rela rel;
252b5132
RH
4621
4622 /* This symbol has an entry in the global offset table. Set it
4623 up. */
4624
6de2ae4a 4625 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
ffb2e45b 4626 abort ();
252b5132 4627
6de2ae4a
L
4628 rel.r_offset = (htab->elf.sgot->output_section->vma
4629 + htab->elf.sgot->output_offset
dc810e39 4630 + (h->got.offset & ~(bfd_vma) 1));
252b5132 4631
dd5724d5
AM
4632 /* If this is a static link, or it is a -Bsymbolic link and the
4633 symbol is defined locally or was forced to be local because
4634 of a version file, we just want to emit a RELATIVE reloc.
252b5132
RH
4635 The entry in the global offset table will already have been
4636 initialized in the relocate_section function. */
710ab287 4637 if (h->def_regular
0018b0a3
L
4638 && h->type == STT_GNU_IFUNC)
4639 {
710ab287
L
4640 if (info->shared)
4641 {
4642 /* Generate R_386_GLOB_DAT. */
4643 goto do_glob_dat;
4644 }
4645 else
4646 {
cd2b2c10
L
4647 asection *plt;
4648
710ab287
L
4649 if (!h->pointer_equality_needed)
4650 abort ();
4651
4652 /* For non-shared object, we can't use .got.plt, which
4653 contains the real function addres if we need pointer
4654 equality. We load the GOT entry with the PLT entry. */
cd2b2c10 4655 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L
4656 bfd_put_32 (output_bfd,
4657 (plt->output_section->vma
4658 + plt->output_offset + h->plt.offset),
6de2ae4a 4659 htab->elf.sgot->contents + h->got.offset);
710ab287
L
4660 return TRUE;
4661 }
0018b0a3
L
4662 }
4663 else if (info->shared
4664 && SYMBOL_REFERENCES_LOCAL (info, h))
dd5724d5 4665 {
6725bdbf 4666 BFD_ASSERT((h->got.offset & 1) != 0);
dd5724d5
AM
4667 rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4668 }
252b5132
RH
4669 else
4670 {
dd5724d5 4671 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4672do_glob_dat:
6725bdbf 4673 bfd_put_32 (output_bfd, (bfd_vma) 0,
6de2ae4a 4674 htab->elf.sgot->contents + h->got.offset);
252b5132
RH
4675 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4676 }
4677
59d6ffb2 4678 elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
252b5132
RH
4679 }
4680
f5385ebf 4681 if (h->needs_copy)
252b5132 4682 {
947216bf 4683 Elf_Internal_Rela rel;
252b5132
RH
4684
4685 /* This symbol needs a copy reloc. Set it up. */
4686
ffb2e45b
AM
4687 if (h->dynindx == -1
4688 || (h->root.type != bfd_link_hash_defined
4689 && h->root.type != bfd_link_hash_defweak)
4690 || htab->srelbss == NULL)
4691 abort ();
252b5132
RH
4692
4693 rel.r_offset = (h->root.u.def.value
4694 + h->root.u.def.section->output_section->vma
4695 + h->root.u.def.section->output_offset);
4696 rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
59d6ffb2 4697 elf_append_rel (output_bfd, htab->srelbss, &rel);
252b5132
RH
4698 }
4699
b34976b6 4700 return TRUE;
252b5132
RH
4701}
4702
c25bc9fc
L
4703/* Finish up local dynamic symbol handling. We set the contents of
4704 various dynamic sections here. */
4705
4706static bfd_boolean
4707elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4708{
4709 struct elf_link_hash_entry *h
4710 = (struct elf_link_hash_entry *) *slot;
4711 struct bfd_link_info *info
23209a78 4712 = (struct bfd_link_info *) inf;
c25bc9fc
L
4713
4714 return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4715 h, NULL);
4716}
4717
38701953
AM
4718/* Used to decide how to sort relocs in an optimal manner for the
4719 dynamic linker, before writing them out. */
4720
4721static enum elf_reloc_type_class
7e612e98
AM
4722elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
4723 const asection *rel_sec ATTRIBUTE_UNUSED,
4724 const Elf_Internal_Rela *rela)
38701953 4725{
55fd94b0 4726 switch (ELF32_R_TYPE (rela->r_info))
38701953
AM
4727 {
4728 case R_386_RELATIVE:
4729 return reloc_class_relative;
4730 case R_386_JUMP_SLOT:
4731 return reloc_class_plt;
4732 case R_386_COPY:
4733 return reloc_class_copy;
4734 default:
4735 return reloc_class_normal;
4736 }
4737}
4738
252b5132
RH
4739/* Finish up the dynamic sections. */
4740
b34976b6 4741static bfd_boolean
55fd94b0
AM
4742elf_i386_finish_dynamic_sections (bfd *output_bfd,
4743 struct bfd_link_info *info)
252b5132 4744{
6725bdbf 4745 struct elf_i386_link_hash_table *htab;
252b5132 4746 bfd *dynobj;
252b5132 4747 asection *sdyn;
25e762b9 4748 const struct elf_i386_backend_data *abed;
252b5132 4749
6725bdbf 4750 htab = elf_i386_hash_table (info);
4dfe6ac6
NC
4751 if (htab == NULL)
4752 return FALSE;
4753
ebe50bae 4754 dynobj = htab->elf.dynobj;
3d4d4302 4755 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
25e762b9 4756 abed = get_elf_i386_backend_data (output_bfd);
252b5132 4757
ebe50bae 4758 if (htab->elf.dynamic_sections_created)
252b5132 4759 {
252b5132
RH
4760 Elf32_External_Dyn *dyncon, *dynconend;
4761
6de2ae4a 4762 if (sdyn == NULL || htab->elf.sgot == NULL)
ffb2e45b 4763 abort ();
252b5132
RH
4764
4765 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 4766 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
252b5132
RH
4767 for (; dyncon < dynconend; dyncon++)
4768 {
4769 Elf_Internal_Dyn dyn;
51b64d56 4770 asection *s;
252b5132
RH
4771
4772 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4773
4774 switch (dyn.d_tag)
4775 {
4776 default:
25e762b9
RM
4777 if (abed->is_vxworks
4778 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7a2b07ff 4779 break;
0ac8d2ca 4780 continue;
252b5132
RH
4781
4782 case DT_PLTGOT:
6de2ae4a 4783 s = htab->elf.sgotplt;
8c37241b 4784 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6725bdbf
AM
4785 break;
4786
252b5132 4787 case DT_JMPREL:
6de2ae4a 4788 s = htab->elf.srelplt;
6348e046 4789 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
252b5132
RH
4790 break;
4791
4792 case DT_PLTRELSZ:
6de2ae4a 4793 s = htab->elf.srelplt;
eea6121a 4794 dyn.d_un.d_val = s->size;
252b5132
RH
4795 break;
4796
4797 case DT_RELSZ:
4798 /* My reading of the SVR4 ABI indicates that the
4799 procedure linkage table relocs (DT_JMPREL) should be
4800 included in the overall relocs (DT_REL). This is
4801 what Solaris does. However, UnixWare can not handle
4802 that case. Therefore, we override the DT_RELSZ entry
6348e046 4803 here to make it not include the JMPREL relocs. */
6de2ae4a 4804 s = htab->elf.srelplt;
6348e046
AM
4805 if (s == NULL)
4806 continue;
eea6121a 4807 dyn.d_un.d_val -= s->size;
6348e046
AM
4808 break;
4809
4810 case DT_REL:
4811 /* We may not be using the standard ELF linker script.
4812 If .rel.plt is the first .rel section, we adjust
4813 DT_REL to not include it. */
6de2ae4a 4814 s = htab->elf.srelplt;
6348e046
AM
4815 if (s == NULL)
4816 continue;
4817 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4818 continue;
eea6121a 4819 dyn.d_un.d_ptr += s->size;
252b5132
RH
4820 break;
4821 }
0ac8d2ca
AM
4822
4823 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH
4824 }
4825
4826 /* Fill in the first entry in the procedure linkage table. */
6de2ae4a 4827 if (htab->elf.splt && htab->elf.splt->size > 0)
252b5132
RH
4828 {
4829 if (info->shared)
eac338cf 4830 {
25e762b9
RM
4831 memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
4832 abed->plt->plt0_entry_size);
4833 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4834 abed->plt0_pad_byte,
4835 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
eac338cf 4836 }
252b5132
RH
4837 else
4838 {
25e762b9
RM
4839 memcpy (htab->elf.splt->contents, abed->plt->plt0_entry,
4840 abed->plt->plt0_entry_size);
4841 memset (htab->elf.splt->contents + abed->plt->plt0_entry_size,
4842 abed->plt0_pad_byte,
4843 abed->plt->plt_entry_size - abed->plt->plt0_entry_size);
252b5132 4844 bfd_put_32 (output_bfd,
6de2ae4a
L
4845 (htab->elf.sgotplt->output_section->vma
4846 + htab->elf.sgotplt->output_offset
6725bdbf 4847 + 4),
25e762b9
RM
4848 htab->elf.splt->contents
4849 + abed->plt->plt0_got1_offset);
252b5132 4850 bfd_put_32 (output_bfd,
6de2ae4a
L
4851 (htab->elf.sgotplt->output_section->vma
4852 + htab->elf.sgotplt->output_offset
6725bdbf 4853 + 8),
25e762b9
RM
4854 htab->elf.splt->contents
4855 + abed->plt->plt0_got2_offset);
eac338cf 4856
25e762b9 4857 if (abed->is_vxworks)
eac338cf
PB
4858 {
4859 Elf_Internal_Rela rel;
7325306f 4860
eac338cf
PB
4861 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4862 On IA32 we use REL relocations so the addend goes in
4863 the PLT directly. */
6de2ae4a
L
4864 rel.r_offset = (htab->elf.splt->output_section->vma
4865 + htab->elf.splt->output_offset
25e762b9 4866 + abed->plt->plt0_got1_offset);
7325306f 4867 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB
4868 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4869 htab->srelplt2->contents);
4870 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */
6de2ae4a
L
4871 rel.r_offset = (htab->elf.splt->output_section->vma
4872 + htab->elf.splt->output_offset
25e762b9 4873 + abed->plt->plt0_got2_offset);
7325306f 4874 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB
4875 bfd_elf32_swap_reloc_out (output_bfd, &rel,
4876 htab->srelplt2->contents +
4877 sizeof (Elf32_External_Rel));
4878 }
252b5132
RH
4879 }
4880
4881 /* UnixWare sets the entsize of .plt to 4, although that doesn't
4882 really seem like the right value. */
6de2ae4a 4883 elf_section_data (htab->elf.splt->output_section)
6725bdbf 4884 ->this_hdr.sh_entsize = 4;
eac338cf
PB
4885
4886 /* Correct the .rel.plt.unloaded relocations. */
25e762b9 4887 if (abed->is_vxworks && !info->shared)
eac338cf 4888 {
25e762b9
RM
4889 int num_plts = (htab->elf.splt->size
4890 / abed->plt->plt_entry_size) - 1;
4c9b0de6 4891 unsigned char *p;
eac338cf
PB
4892
4893 p = htab->srelplt2->contents;
4894 if (info->shared)
4895 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4896 else
4897 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4898
4899 for (; num_plts; num_plts--)
4900 {
4901 Elf_Internal_Rela rel;
4902 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4903 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
eac338cf
PB
4904 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4905 p += sizeof (Elf32_External_Rel);
4906
4907 bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
7325306f 4908 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
eac338cf
PB
4909 bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4910 p += sizeof (Elf32_External_Rel);
4911 }
4912 }
252b5132
RH
4913 }
4914 }
4915
6de2ae4a 4916 if (htab->elf.sgotplt)
252b5132 4917 {
56d4289c
L
4918 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4919 {
4920 (*_bfd_error_handler)
4921 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4922 return FALSE;
4923 }
4924
12d0ee4a 4925 /* Fill in the first three entries in the global offset table. */
6de2ae4a 4926 if (htab->elf.sgotplt->size > 0)
12d0ee4a
AM
4927 {
4928 bfd_put_32 (output_bfd,
55fd94b0 4929 (sdyn == NULL ? 0
12d0ee4a 4930 : sdyn->output_section->vma + sdyn->output_offset),
6de2ae4a
L
4931 htab->elf.sgotplt->contents);
4932 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4933 bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
12d0ee4a 4934 }
252b5132 4935
6de2ae4a 4936 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
12d0ee4a 4937 }
8c37241b 4938
e41b3a13 4939 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM
4940 if (htab->plt_eh_frame != NULL
4941 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ
4942 {
4943 if (htab->elf.splt != NULL
4944 && htab->elf.splt->size != 0
4945 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
4946 && htab->elf.splt->output_section != NULL
4947 && htab->plt_eh_frame->output_section != NULL)
4948 {
4949 bfd_vma plt_start = htab->elf.splt->output_section->vma;
4950 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
4951 + htab->plt_eh_frame->output_offset
4952 + PLT_FDE_START_OFFSET;
4953 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4954 htab->plt_eh_frame->contents
4955 + PLT_FDE_START_OFFSET);
4956 }
4957 if (htab->plt_eh_frame->sec_info_type
dbaa2011 4958 == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ
4959 {
4960 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4961 htab->plt_eh_frame,
4962 htab->plt_eh_frame->contents))
4963 return FALSE;
4964 }
4965 }
4966
6de2ae4a
L
4967 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4968 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
8c37241b 4969
c25bc9fc
L
4970 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4971 htab_traverse (htab->loc_hash_table,
4972 elf_i386_finish_local_dynamic_symbol,
4973 info);
4974
b34976b6 4975 return TRUE;
252b5132
RH
4976}
4977
4c45e5c9
JJ
4978/* Return address for Ith PLT stub in section PLT, for relocation REL
4979 or (bfd_vma) -1 if it should not be included. */
4980
4981static bfd_vma
4982elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
4983 const arelent *rel ATTRIBUTE_UNUSED)
4984{
25e762b9 4985 return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
4c45e5c9
JJ
4986}
4987
fdc90cb4
JJ
4988/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
4989
4990static bfd_boolean
4991elf_i386_hash_symbol (struct elf_link_hash_entry *h)
4992{
4993 if (h->plt.offset != (bfd_vma) -1
4994 && !h->def_regular
4995 && !h->pointer_equality_needed)
4996 return FALSE;
4997
4998 return _bfd_elf_hash_symbol (h);
4999}
4c45e5c9 5000
d8045f23
NC
5001/* Hook called by the linker routine which adds symbols from an object
5002 file. */
5003
5004static bfd_boolean
c16153ae 5005elf_i386_add_symbol_hook (bfd * abfd,
d8045f23
NC
5006 struct bfd_link_info * info ATTRIBUTE_UNUSED,
5007 Elf_Internal_Sym * sym,
5008 const char ** namep ATTRIBUTE_UNUSED,
5009 flagword * flagsp ATTRIBUTE_UNUSED,
5010 asection ** secp ATTRIBUTE_UNUSED,
5011 bfd_vma * valp ATTRIBUTE_UNUSED)
5012{
c16153ae 5013 if ((abfd->flags & DYNAMIC) == 0
f64b2e8d
NC
5014 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5015 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
5016 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23
NC
5017
5018 return TRUE;
5019}
5020
252b5132
RH
5021#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
5022#define TARGET_LITTLE_NAME "elf32-i386"
5023#define ELF_ARCH bfd_arch_i386
ae95ffa6 5024#define ELF_TARGET_ID I386_ELF_DATA
252b5132
RH
5025#define ELF_MACHINE_CODE EM_386
5026#define ELF_MAXPAGESIZE 0x1000
252b5132
RH
5027
5028#define elf_backend_can_gc_sections 1
51b64d56 5029#define elf_backend_can_refcount 1
252b5132
RH
5030#define elf_backend_want_got_plt 1
5031#define elf_backend_plt_readonly 1
5032#define elf_backend_want_plt_sym 0
5033#define elf_backend_got_header_size 12
e41b3a13 5034#define elf_backend_plt_alignment 4
252b5132 5035
8c29f035
AM
5036/* Support RELA for objdump of prelink objects. */
5037#define elf_info_to_howto elf_i386_info_to_howto_rel
dd5724d5
AM
5038#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
5039
13ae64f3 5040#define bfd_elf32_mkobject elf_i386_mkobject
13ae64f3 5041
dd5724d5
AM
5042#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
5043#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
c25bc9fc 5044#define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
dd5724d5 5045#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
13285a1b 5046#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
dd5724d5
AM
5047
5048#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
13285a1b 5049#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
dd5724d5 5050#define elf_backend_check_relocs elf_i386_check_relocs
0ac8d2ca 5051#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
6725bdbf 5052#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
0ac8d2ca 5053#define elf_backend_fake_sections elf_i386_fake_sections
dd5724d5
AM
5054#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
5055#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
5056#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
5057#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
c5fccbec
DJ
5058#define elf_backend_grok_prstatus elf_i386_grok_prstatus
5059#define elf_backend_grok_psinfo elf_i386_grok_psinfo
db6751f2 5060#define elf_backend_reloc_type_class elf_i386_reloc_type_class
0ac8d2ca
AM
5061#define elf_backend_relocate_section elf_i386_relocate_section
5062#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
67a4f2b7 5063#define elf_backend_always_size_sections elf_i386_always_size_sections
74541ad4
AM
5064#define elf_backend_omit_section_dynsym \
5065 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4c45e5c9 5066#define elf_backend_plt_sym_val elf_i386_plt_sym_val
fdc90cb4 5067#define elf_backend_hash_symbol elf_i386_hash_symbol
d8045f23
NC
5068#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
5069#undef elf_backend_post_process_headers
5070#define elf_backend_post_process_headers _bfd_elf_set_osabi
dd5724d5 5071
252b5132 5072#include "elf32-target.h"
2bc3c89a
AM
5073
5074/* FreeBSD support. */
5075
5076#undef TARGET_LITTLE_SYM
5077#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
5078#undef TARGET_LITTLE_NAME
5079#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
d1036acb
L
5080#undef ELF_OSABI
5081#define ELF_OSABI ELFOSABI_FREEBSD
2bc3c89a
AM
5082
5083/* The kernel recognizes executables as valid only if they carry a
5084 "FreeBSD" label in the ELF header. So we put this label on all
5085 executables and (for simplicity) also all other object files. */
5086
2bc3c89a 5087static void
d8045f23 5088elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
2bc3c89a 5089{
d8045f23 5090 _bfd_elf_set_osabi (abfd, info);
2bc3c89a 5091
2bc3c89a
AM
5092#ifdef OLD_FREEBSD_ABI_LABEL
5093 /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
5094 memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
caf47ea6 5095#endif
2bc3c89a
AM
5096}
5097
5098#undef elf_backend_post_process_headers
d8045f23 5099#define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers
571fe01f
NC
5100#undef elf32_bed
5101#define elf32_bed elf32_i386_fbsd_bed
2bc3c89a 5102
d8045f23
NC
5103#undef elf_backend_add_symbol_hook
5104
2bc3c89a 5105#include "elf32-target.h"
eac338cf 5106
a6cc6b3b
RO
5107/* Solaris 2. */
5108
5109#undef TARGET_LITTLE_SYM
5110#define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec
5111#undef TARGET_LITTLE_NAME
5112#define TARGET_LITTLE_NAME "elf32-i386-sol2"
5113
5114/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5115 objects won't be recognized. */
5116#undef ELF_OSABI
5117
5118#undef elf32_bed
5119#define elf32_bed elf32_i386_sol2_bed
5120
7dc98aea
RO
5121/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
5122 boundary. */
5123#undef elf_backend_static_tls_alignment
5124#define elf_backend_static_tls_alignment 8
5125
a6cc6b3b
RO
5126/* The Solaris 2 ABI requires a plt symbol on all platforms.
5127
5128 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5129 File, p.63. */
5130#undef elf_backend_want_plt_sym
5131#define elf_backend_want_plt_sym 1
5132
5133#include "elf32-target.h"
5134
a27e4371
RM
5135/* Native Client support. */
5136
5137#undef TARGET_LITTLE_SYM
5138#define TARGET_LITTLE_SYM bfd_elf32_i386_nacl_vec
5139#undef TARGET_LITTLE_NAME
5140#define TARGET_LITTLE_NAME "elf32-i386-nacl"
5141#undef elf32_bed
5142#define elf32_bed elf32_i386_nacl_bed
5143
5144#undef ELF_MAXPAGESIZE
5145#define ELF_MAXPAGESIZE 0x10000
5146
5147/* Restore defaults. */
5148#undef ELF_OSABI
5149#undef elf_backend_want_plt_sym
5150#define elf_backend_want_plt_sym 0
5151#undef elf_backend_post_process_headers
5152#define elf_backend_post_process_headers _bfd_elf_set_osabi
5153#undef elf_backend_static_tls_alignment
5154
5155/* NaCl uses substantially different PLT entries for the same effects. */
5156
5157#undef elf_backend_plt_alignment
5158#define elf_backend_plt_alignment 5
5159#define NACL_PLT_ENTRY_SIZE 64
5160#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5161
5162static const bfd_byte elf_i386_nacl_plt0_entry[] =
5163 {
5164 0xff, 0x35, /* pushl contents of address */
5165 0, 0, 0, 0, /* replaced with address of .got + 4. */
5166 0x8b, 0x0d, /* movl contents of address, %ecx */
5167 0, 0, 0, 0, /* replaced with address of .got + 8. */
5168 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5169 0xff, 0xe1 /* jmp *%ecx */
5170 };
5171
5172static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5173 {
5174 0x8b, 0x0d, /* movl contents of address, %ecx */
5175 0, 0, 0, 0, /* replaced with GOT slot address. */
5176 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */
5177 0xff, 0xe1, /* jmp *%ecx */
5178
5179 /* Pad to the next 32-byte boundary with nop instructions. */
5180 0x90,
5181 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5182 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5183
5184 /* Lazy GOT entries point here (32-byte aligned). */
5185 0x68, /* pushl immediate */
5186 0, 0, 0, 0, /* replaced with reloc offset. */
5187 0xe9, /* jmp relative */
5188 0, 0, 0, 0, /* replaced with offset to .plt. */
5189
5190 /* Pad to the next 32-byte boundary with nop instructions. */
5191 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5192 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5193 0x90, 0x90
5194 };
5195
5196static const bfd_byte
5197elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] =
5198 {
5199 0xff, 0x73, 0x04, /* pushl 4(%ebx) */
5200 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
5201 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
5202 0xff, 0xe1, /* jmp *%ecx */
caa0075c
RM
5203
5204 /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
5205 so pad to that size with nop instructions. */
5206 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
a27e4371
RM
5207 };
5208
5209static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
5210 {
5211 0x8b, 0x8b, /* movl offset(%ebx), %ecx */
5212 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
5213 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */
5214 0xff, 0xe1, /* jmp *%ecx */
5215
5216 /* Pad to the next 32-byte boundary with nop instructions. */
5217 0x90,
5218 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5219 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5220
5221 /* Lazy GOT entries point here (32-byte aligned). */
5222 0x68, /* pushl immediate */
5223 0, 0, 0, 0, /* replaced with offset into relocation table. */
5224 0xe9, /* jmp relative */
5225 0, 0, 0, 0, /* replaced with offset to start of .plt. */
5226
5227 /* Pad to the next 32-byte boundary with nop instructions. */
5228 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5229 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90,
5230 0x90, 0x90
5231 };
5232
5233static const bfd_byte elf_i386_nacl_eh_frame_plt[] =
5234 {
5235#if (PLT_CIE_LENGTH != 20 \
5236 || PLT_FDE_LENGTH != 36 \
5237 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5238 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5239# error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!"
5240#endif
5241 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5242 0, 0, 0, 0, /* CIE ID */
5243 1, /* CIE version */
5244 'z', 'R', 0, /* Augmentation string */
5245 1, /* Code alignment factor */
5246 0x7c, /* Data alignment factor: -4 */
5247 8, /* Return address column */
5248 1, /* Augmentation size */
5249 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5250 DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
5251 DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
5252 DW_CFA_nop, DW_CFA_nop,
5253
5254 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5255 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
5256 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
5257 0, 0, 0, 0, /* .plt size goes here */
5258 0, /* Augmentation size */
5259 DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
5260 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5261 DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
5262 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5263 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5264 13, /* Block length */
5265 DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
5266 DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
5267 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5268 DW_OP_lit2, DW_OP_shl, DW_OP_plus,
5269 DW_CFA_nop, DW_CFA_nop
5270 };
5271
5272static const struct elf_i386_plt_layout elf_i386_nacl_plt =
5273 {
5274 elf_i386_nacl_plt0_entry, /* plt0_entry */
5275 sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */
5276 2, /* plt0_got1_offset */
5277 8, /* plt0_got2_offset */
5278 elf_i386_nacl_plt_entry, /* plt_entry */
5279 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5280 2, /* plt_got_offset */
5281 33, /* plt_reloc_offset */
5282 38, /* plt_plt_offset */
5283 32, /* plt_lazy_offset */
5284 elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */
5285 elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */
5286 elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */
5287 sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */
5288 };
5289
5290static const struct elf_i386_backend_data elf_i386_nacl_arch_bed =
5291 {
5292 &elf_i386_nacl_plt, /* plt */
5293 0x90, /* plt0_pad_byte: nop insn */
5294 0, /* is_vxworks */
5295 };
5296
5297#undef elf_backend_arch_data
5298#define elf_backend_arch_data &elf_i386_nacl_arch_bed
5299
5a68afcf
RM
5300#undef elf_backend_modify_segment_map
5301#define elf_backend_modify_segment_map nacl_modify_segment_map
5302#undef elf_backend_modify_program_headers
5303#define elf_backend_modify_program_headers nacl_modify_program_headers
5304
a27e4371
RM
5305#include "elf32-target.h"
5306
5a68afcf
RM
5307/* Restore defaults. */
5308#undef elf_backend_modify_segment_map
5309#undef elf_backend_modify_program_headers
5310
eac338cf
PB
5311/* VxWorks support. */
5312
5313#undef TARGET_LITTLE_SYM
5314#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
5315#undef TARGET_LITTLE_NAME
5316#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
d1036acb 5317#undef ELF_OSABI
a27e4371
RM
5318#undef elf_backend_plt_alignment
5319#define elf_backend_plt_alignment 4
eac338cf 5320
23209a78
RM
5321static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed =
5322 {
25e762b9 5323 &elf_i386_plt, /* plt */
23209a78
RM
5324 0x90, /* plt0_pad_byte */
5325 1, /* is_vxworks */
5326 };
eac338cf 5327
23209a78
RM
5328#undef elf_backend_arch_data
5329#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
eac338cf 5330
13285a1b
AM
5331#undef elf_backend_relocs_compatible
5332#undef elf_backend_post_process_headers
eac338cf
PB
5333#undef elf_backend_add_symbol_hook
5334#define elf_backend_add_symbol_hook \
5335 elf_vxworks_add_symbol_hook
5336#undef elf_backend_link_output_symbol_hook
5337#define elf_backend_link_output_symbol_hook \
9c72ff84 5338 elf_vxworks_link_output_symbol_hook
eac338cf
PB
5339#undef elf_backend_emit_relocs
5340#define elf_backend_emit_relocs elf_vxworks_emit_relocs
5341#undef elf_backend_final_write_processing
5342#define elf_backend_final_write_processing \
5343 elf_vxworks_final_write_processing
7dc98aea 5344#undef elf_backend_static_tls_alignment
eac338cf
PB
5345
5346/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
5347 define it. */
5348#undef elf_backend_want_plt_sym
5349#define elf_backend_want_plt_sym 1
5350
5351#undef elf32_bed
5352#define elf32_bed elf32_i386_vxworks_bed
5353
5354#include "elf32-target.h"
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