Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Intel 80386/80486-specific support for 32-bit ELF |
571fe01f | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
638632bd | 3 | Free Software Foundation, Inc. |
252b5132 | 4 | |
571fe01f | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
571fe01f NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
252b5132 | 11 | |
571fe01f NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
571fe01f NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
252b5132 RH |
20 | |
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
23 | #include "bfdlink.h" | |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | ||
27 | static reloc_howto_type *elf_i386_reloc_type_lookup | |
28 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
252b5132 | 29 | static void elf_i386_info_to_howto_rel |
947216bf | 30 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
b34976b6 | 31 | static bfd_boolean elf_i386_is_local_label_name |
ebe50bae | 32 | PARAMS ((bfd *, const char *)); |
b34976b6 | 33 | static bfd_boolean elf_i386_grok_prstatus |
38701953 | 34 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
b34976b6 | 35 | static bfd_boolean elf_i386_grok_psinfo |
38701953 AM |
36 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
37 | static struct bfd_hash_entry *link_hash_newfunc | |
252b5132 RH |
38 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
39 | static struct bfd_link_hash_table *elf_i386_link_hash_table_create | |
40 | PARAMS ((bfd *)); | |
b34976b6 | 41 | static bfd_boolean create_got_section |
571fe01f | 42 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 | 43 | static bfd_boolean elf_i386_create_dynamic_sections |
571fe01f | 44 | PARAMS ((bfd *, struct bfd_link_info *)); |
51b64d56 | 45 | static void elf_i386_copy_indirect_symbol |
b48fa14c AM |
46 | PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *, |
47 | struct elf_link_hash_entry *)); | |
13ae64f3 JJ |
48 | static int elf_i386_tls_transition |
49 | PARAMS ((struct bfd_link_info *, int, int)); | |
50 | ||
b34976b6 | 51 | static bfd_boolean elf_i386_mkobject |
571fe01f | 52 | PARAMS ((bfd *)); |
b34976b6 | 53 | static bfd_boolean elf_i386_object_p |
571fe01f | 54 | PARAMS ((bfd *)); |
b34976b6 | 55 | static bfd_boolean elf_i386_check_relocs |
252b5132 RH |
56 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
57 | const Elf_Internal_Rela *)); | |
a7b97311 | 58 | static asection *elf_i386_gc_mark_hook |
1e2f5b6e | 59 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
a7b97311 | 60 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
b34976b6 | 61 | static bfd_boolean elf_i386_gc_sweep_hook |
a7b97311 AM |
62 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
63 | const Elf_Internal_Rela *)); | |
b34976b6 | 64 | static bfd_boolean elf_i386_adjust_dynamic_symbol |
252b5132 | 65 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 66 | static bfd_boolean allocate_dynrelocs |
0c715baa | 67 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
b34976b6 | 68 | static bfd_boolean readonly_dynrelocs |
6725bdbf | 69 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
b34976b6 | 70 | static bfd_boolean elf_i386_fake_sections |
947216bf | 71 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); |
b34976b6 | 72 | static bfd_boolean elf_i386_size_dynamic_sections |
252b5132 | 73 | PARAMS ((bfd *, struct bfd_link_info *)); |
13ae64f3 JJ |
74 | static bfd_vma dtpoff_base |
75 | PARAMS ((struct bfd_link_info *)); | |
76 | static bfd_vma tpoff | |
77 | PARAMS ((struct bfd_link_info *, bfd_vma)); | |
b34976b6 | 78 | static bfd_boolean elf_i386_relocate_section |
252b5132 RH |
79 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
80 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 | 81 | static bfd_boolean elf_i386_finish_dynamic_symbol |
252b5132 RH |
82 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
83 | Elf_Internal_Sym *)); | |
f51e552e AM |
84 | static enum elf_reloc_type_class elf_i386_reloc_type_class |
85 | PARAMS ((const Elf_Internal_Rela *)); | |
b34976b6 | 86 | static bfd_boolean elf_i386_finish_dynamic_sections |
38701953 | 87 | PARAMS ((bfd *, struct bfd_link_info *)); |
252b5132 | 88 | |
571fe01f | 89 | #define USE_REL 1 /* 386 uses REL relocations instead of RELA. */ |
252b5132 RH |
90 | |
91 | #include "elf/i386.h" | |
92 | ||
93 | static reloc_howto_type elf_howto_table[]= | |
94 | { | |
b34976b6 | 95 | HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield, |
1b452ec6 | 96 | bfd_elf_generic_reloc, "R_386_NONE", |
b34976b6 AM |
97 | TRUE, 0x00000000, 0x00000000, FALSE), |
98 | HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 99 | bfd_elf_generic_reloc, "R_386_32", |
b34976b6 AM |
100 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
101 | HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 102 | bfd_elf_generic_reloc, "R_386_PC32", |
b34976b6 AM |
103 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
104 | HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 105 | bfd_elf_generic_reloc, "R_386_GOT32", |
b34976b6 AM |
106 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
107 | HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 108 | bfd_elf_generic_reloc, "R_386_PLT32", |
b34976b6 AM |
109 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
110 | HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 111 | bfd_elf_generic_reloc, "R_386_COPY", |
b34976b6 AM |
112 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
113 | HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 114 | bfd_elf_generic_reloc, "R_386_GLOB_DAT", |
b34976b6 AM |
115 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
116 | HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 117 | bfd_elf_generic_reloc, "R_386_JUMP_SLOT", |
b34976b6 AM |
118 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
119 | HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 120 | bfd_elf_generic_reloc, "R_386_RELATIVE", |
b34976b6 AM |
121 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
122 | HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 123 | bfd_elf_generic_reloc, "R_386_GOTOFF", |
b34976b6 AM |
124 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
125 | HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 126 | bfd_elf_generic_reloc, "R_386_GOTPC", |
b34976b6 | 127 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
1b452ec6 | 128 | |
dc47f327 AM |
129 | /* We have a gap in the reloc numbers here. |
130 | R_386_standard counts the number up to this point, and | |
131 | R_386_ext_offset is the value to subtract from a reloc type of | |
132 | R_386_16 thru R_386_PC8 to form an index into this table. */ | |
1b452ec6 | 133 | #define R_386_standard ((unsigned int) R_386_GOTPC + 1) |
37e55690 | 134 | #define R_386_ext_offset ((unsigned int) R_386_TLS_TPOFF - R_386_standard) |
1b452ec6 | 135 | |
37e55690 | 136 | /* These relocs are a GNU extension. */ |
b34976b6 | 137 | HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
37e55690 | 138 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF", |
b34976b6 AM |
139 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
140 | HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 141 | bfd_elf_generic_reloc, "R_386_TLS_IE", |
b34976b6 AM |
142 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
143 | HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 144 | bfd_elf_generic_reloc, "R_386_TLS_GOTIE", |
b34976b6 AM |
145 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
146 | HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 147 | bfd_elf_generic_reloc, "R_386_TLS_LE", |
b34976b6 AM |
148 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
149 | HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 150 | bfd_elf_generic_reloc, "R_386_TLS_GD", |
b34976b6 AM |
151 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
152 | HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 153 | bfd_elf_generic_reloc, "R_386_TLS_LDM", |
b34976b6 AM |
154 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
155 | HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 156 | bfd_elf_generic_reloc, "R_386_16", |
b34976b6 AM |
157 | TRUE, 0xffff, 0xffff, FALSE), |
158 | HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 159 | bfd_elf_generic_reloc, "R_386_PC16", |
b34976b6 AM |
160 | TRUE, 0xffff, 0xffff, TRUE), |
161 | HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 162 | bfd_elf_generic_reloc, "R_386_8", |
b34976b6 AM |
163 | TRUE, 0xff, 0xff, FALSE), |
164 | HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
1b452ec6 | 165 | bfd_elf_generic_reloc, "R_386_PC8", |
b34976b6 | 166 | TRUE, 0xff, 0xff, TRUE), |
dc47f327 | 167 | |
dc47f327 | 168 | #define R_386_ext ((unsigned int) R_386_PC8 + 1 - R_386_ext_offset) |
13ae64f3 JJ |
169 | #define R_386_tls_offset ((unsigned int) R_386_TLS_LDO_32 - R_386_ext) |
170 | /* These are common with Solaris TLS implementation. */ | |
b34976b6 | 171 | HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
13ae64f3 | 172 | bfd_elf_generic_reloc, "R_386_TLS_LDO_32", |
b34976b6 AM |
173 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
174 | HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 175 | bfd_elf_generic_reloc, "R_386_TLS_IE_32", |
b34976b6 AM |
176 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
177 | HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 178 | bfd_elf_generic_reloc, "R_386_TLS_LE_32", |
b34976b6 AM |
179 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
180 | HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 181 | bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32", |
b34976b6 AM |
182 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
183 | HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 184 | bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32", |
b34976b6 AM |
185 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
186 | HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 187 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF32", |
b34976b6 | 188 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
13ae64f3 JJ |
189 | |
190 | /* Another gap. */ | |
191 | #define R_386_tls ((unsigned int) R_386_TLS_TPOFF32 + 1 - R_386_tls_offset) | |
192 | #define R_386_vt_offset ((unsigned int) R_386_GNU_VTINHERIT - R_386_tls) | |
252b5132 RH |
193 | |
194 | /* GNU extension to record C++ vtable hierarchy. */ | |
252b5132 RH |
195 | HOWTO (R_386_GNU_VTINHERIT, /* type */ |
196 | 0, /* rightshift */ | |
197 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
198 | 0, /* bitsize */ | |
b34976b6 | 199 | FALSE, /* pc_relative */ |
252b5132 RH |
200 | 0, /* bitpos */ |
201 | complain_overflow_dont, /* complain_on_overflow */ | |
202 | NULL, /* special_function */ | |
203 | "R_386_GNU_VTINHERIT", /* name */ | |
b34976b6 | 204 | FALSE, /* partial_inplace */ |
252b5132 RH |
205 | 0, /* src_mask */ |
206 | 0, /* dst_mask */ | |
b34976b6 | 207 | FALSE), /* pcrel_offset */ |
252b5132 RH |
208 | |
209 | /* GNU extension to record C++ vtable member usage. */ | |
252b5132 RH |
210 | HOWTO (R_386_GNU_VTENTRY, /* type */ |
211 | 0, /* rightshift */ | |
212 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
213 | 0, /* bitsize */ | |
b34976b6 | 214 | FALSE, /* pc_relative */ |
252b5132 RH |
215 | 0, /* bitpos */ |
216 | complain_overflow_dont, /* complain_on_overflow */ | |
217 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
218 | "R_386_GNU_VTENTRY", /* name */ | |
b34976b6 | 219 | FALSE, /* partial_inplace */ |
252b5132 RH |
220 | 0, /* src_mask */ |
221 | 0, /* dst_mask */ | |
b34976b6 | 222 | FALSE) /* pcrel_offset */ |
dc47f327 AM |
223 | |
224 | #define R_386_vt ((unsigned int) R_386_GNU_VTENTRY + 1 - R_386_vt_offset) | |
225 | ||
226 | }; | |
227 | ||
252b5132 RH |
228 | #ifdef DEBUG_GEN_RELOC |
229 | #define TRACE(str) fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str) | |
230 | #else | |
231 | #define TRACE(str) | |
232 | #endif | |
233 | ||
234 | static reloc_howto_type * | |
235 | elf_i386_reloc_type_lookup (abfd, code) | |
7442e600 | 236 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
237 | bfd_reloc_code_real_type code; |
238 | { | |
239 | switch (code) | |
240 | { | |
241 | case BFD_RELOC_NONE: | |
242 | TRACE ("BFD_RELOC_NONE"); | |
1b452ec6 | 243 | return &elf_howto_table[(unsigned int) R_386_NONE ]; |
252b5132 RH |
244 | |
245 | case BFD_RELOC_32: | |
246 | TRACE ("BFD_RELOC_32"); | |
1b452ec6 | 247 | return &elf_howto_table[(unsigned int) R_386_32 ]; |
252b5132 RH |
248 | |
249 | case BFD_RELOC_CTOR: | |
250 | TRACE ("BFD_RELOC_CTOR"); | |
1b452ec6 | 251 | return &elf_howto_table[(unsigned int) R_386_32 ]; |
252b5132 RH |
252 | |
253 | case BFD_RELOC_32_PCREL: | |
254 | TRACE ("BFD_RELOC_PC32"); | |
1b452ec6 | 255 | return &elf_howto_table[(unsigned int) R_386_PC32 ]; |
252b5132 RH |
256 | |
257 | case BFD_RELOC_386_GOT32: | |
258 | TRACE ("BFD_RELOC_386_GOT32"); | |
1b452ec6 | 259 | return &elf_howto_table[(unsigned int) R_386_GOT32 ]; |
252b5132 RH |
260 | |
261 | case BFD_RELOC_386_PLT32: | |
262 | TRACE ("BFD_RELOC_386_PLT32"); | |
1b452ec6 | 263 | return &elf_howto_table[(unsigned int) R_386_PLT32 ]; |
252b5132 RH |
264 | |
265 | case BFD_RELOC_386_COPY: | |
266 | TRACE ("BFD_RELOC_386_COPY"); | |
1b452ec6 | 267 | return &elf_howto_table[(unsigned int) R_386_COPY ]; |
252b5132 RH |
268 | |
269 | case BFD_RELOC_386_GLOB_DAT: | |
270 | TRACE ("BFD_RELOC_386_GLOB_DAT"); | |
1b452ec6 | 271 | return &elf_howto_table[(unsigned int) R_386_GLOB_DAT ]; |
252b5132 RH |
272 | |
273 | case BFD_RELOC_386_JUMP_SLOT: | |
274 | TRACE ("BFD_RELOC_386_JUMP_SLOT"); | |
1b452ec6 | 275 | return &elf_howto_table[(unsigned int) R_386_JUMP_SLOT ]; |
252b5132 RH |
276 | |
277 | case BFD_RELOC_386_RELATIVE: | |
278 | TRACE ("BFD_RELOC_386_RELATIVE"); | |
1b452ec6 | 279 | return &elf_howto_table[(unsigned int) R_386_RELATIVE ]; |
252b5132 RH |
280 | |
281 | case BFD_RELOC_386_GOTOFF: | |
282 | TRACE ("BFD_RELOC_386_GOTOFF"); | |
1b452ec6 | 283 | return &elf_howto_table[(unsigned int) R_386_GOTOFF ]; |
252b5132 RH |
284 | |
285 | case BFD_RELOC_386_GOTPC: | |
286 | TRACE ("BFD_RELOC_386_GOTPC"); | |
1b452ec6 | 287 | return &elf_howto_table[(unsigned int) R_386_GOTPC ]; |
252b5132 | 288 | |
37e55690 JJ |
289 | /* These relocs are a GNU extension. */ |
290 | case BFD_RELOC_386_TLS_TPOFF: | |
291 | TRACE ("BFD_RELOC_386_TLS_TPOFF"); | |
292 | return &elf_howto_table[(unsigned int) R_386_TLS_TPOFF - R_386_ext_offset]; | |
293 | ||
294 | case BFD_RELOC_386_TLS_IE: | |
295 | TRACE ("BFD_RELOC_386_TLS_IE"); | |
296 | return &elf_howto_table[(unsigned int) R_386_TLS_IE - R_386_ext_offset]; | |
297 | ||
298 | case BFD_RELOC_386_TLS_GOTIE: | |
299 | TRACE ("BFD_RELOC_386_TLS_GOTIE"); | |
300 | return &elf_howto_table[(unsigned int) R_386_TLS_GOTIE - R_386_ext_offset]; | |
301 | ||
13ae64f3 JJ |
302 | case BFD_RELOC_386_TLS_LE: |
303 | TRACE ("BFD_RELOC_386_TLS_LE"); | |
304 | return &elf_howto_table[(unsigned int) R_386_TLS_LE - R_386_ext_offset]; | |
305 | ||
306 | case BFD_RELOC_386_TLS_GD: | |
307 | TRACE ("BFD_RELOC_386_TLS_GD"); | |
308 | return &elf_howto_table[(unsigned int) R_386_TLS_GD - R_386_ext_offset]; | |
309 | ||
310 | case BFD_RELOC_386_TLS_LDM: | |
311 | TRACE ("BFD_RELOC_386_TLS_LDM"); | |
312 | return &elf_howto_table[(unsigned int) R_386_TLS_LDM - R_386_ext_offset]; | |
313 | ||
252b5132 RH |
314 | case BFD_RELOC_16: |
315 | TRACE ("BFD_RELOC_16"); | |
1b452ec6 | 316 | return &elf_howto_table[(unsigned int) R_386_16 - R_386_ext_offset]; |
252b5132 RH |
317 | |
318 | case BFD_RELOC_16_PCREL: | |
319 | TRACE ("BFD_RELOC_16_PCREL"); | |
1b452ec6 | 320 | return &elf_howto_table[(unsigned int) R_386_PC16 - R_386_ext_offset]; |
252b5132 RH |
321 | |
322 | case BFD_RELOC_8: | |
323 | TRACE ("BFD_RELOC_8"); | |
1b452ec6 | 324 | return &elf_howto_table[(unsigned int) R_386_8 - R_386_ext_offset]; |
252b5132 RH |
325 | |
326 | case BFD_RELOC_8_PCREL: | |
327 | TRACE ("BFD_RELOC_8_PCREL"); | |
1b452ec6 | 328 | return &elf_howto_table[(unsigned int) R_386_PC8 - R_386_ext_offset]; |
252b5132 | 329 | |
13ae64f3 JJ |
330 | /* Common with Sun TLS implementation. */ |
331 | case BFD_RELOC_386_TLS_LDO_32: | |
332 | TRACE ("BFD_RELOC_386_TLS_LDO_32"); | |
333 | return &elf_howto_table[(unsigned int) R_386_TLS_LDO_32 - R_386_tls_offset]; | |
334 | ||
335 | case BFD_RELOC_386_TLS_IE_32: | |
336 | TRACE ("BFD_RELOC_386_TLS_IE_32"); | |
337 | return &elf_howto_table[(unsigned int) R_386_TLS_IE_32 - R_386_tls_offset]; | |
338 | ||
339 | case BFD_RELOC_386_TLS_LE_32: | |
340 | TRACE ("BFD_RELOC_386_TLS_LE_32"); | |
341 | return &elf_howto_table[(unsigned int) R_386_TLS_LE_32 - R_386_tls_offset]; | |
342 | ||
343 | case BFD_RELOC_386_TLS_DTPMOD32: | |
344 | TRACE ("BFD_RELOC_386_TLS_DTPMOD32"); | |
345 | return &elf_howto_table[(unsigned int) R_386_TLS_DTPMOD32 - R_386_tls_offset]; | |
346 | ||
347 | case BFD_RELOC_386_TLS_DTPOFF32: | |
348 | TRACE ("BFD_RELOC_386_TLS_DTPOFF32"); | |
349 | return &elf_howto_table[(unsigned int) R_386_TLS_DTPOFF32 - R_386_tls_offset]; | |
350 | ||
351 | case BFD_RELOC_386_TLS_TPOFF32: | |
352 | TRACE ("BFD_RELOC_386_TLS_TPOFF32"); | |
353 | return &elf_howto_table[(unsigned int) R_386_TLS_TPOFF32 - R_386_tls_offset]; | |
354 | ||
252b5132 RH |
355 | case BFD_RELOC_VTABLE_INHERIT: |
356 | TRACE ("BFD_RELOC_VTABLE_INHERIT"); | |
dc47f327 AM |
357 | return &elf_howto_table[(unsigned int) R_386_GNU_VTINHERIT |
358 | - R_386_vt_offset]; | |
252b5132 RH |
359 | |
360 | case BFD_RELOC_VTABLE_ENTRY: | |
361 | TRACE ("BFD_RELOC_VTABLE_ENTRY"); | |
dc47f327 AM |
362 | return &elf_howto_table[(unsigned int) R_386_GNU_VTENTRY |
363 | - R_386_vt_offset]; | |
252b5132 RH |
364 | |
365 | default: | |
366 | break; | |
367 | } | |
368 | ||
369 | TRACE ("Unknown"); | |
370 | return 0; | |
371 | } | |
372 | ||
252b5132 RH |
373 | static void |
374 | elf_i386_info_to_howto_rel (abfd, cache_ptr, dst) | |
7442e600 | 375 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 376 | arelent *cache_ptr; |
947216bf | 377 | Elf_Internal_Rela *dst; |
252b5132 | 378 | { |
dc47f327 AM |
379 | unsigned int r_type = ELF32_R_TYPE (dst->r_info); |
380 | unsigned int indx; | |
381 | ||
382 | if ((indx = r_type) >= R_386_standard | |
383 | && ((indx = r_type - R_386_ext_offset) - R_386_standard | |
384 | >= R_386_ext - R_386_standard) | |
13ae64f3 JJ |
385 | && ((indx = r_type - R_386_tls_offset) - R_386_ext |
386 | >= R_386_tls - R_386_ext) | |
387 | && ((indx = r_type - R_386_vt_offset) - R_386_tls | |
388 | >= R_386_vt - R_386_tls)) | |
252b5132 | 389 | { |
dc47f327 | 390 | (*_bfd_error_handler) (_("%s: invalid relocation type %d"), |
8f615d07 | 391 | bfd_archive_filename (abfd), (int) r_type); |
dc47f327 | 392 | indx = (unsigned int) R_386_NONE; |
252b5132 | 393 | } |
dc47f327 | 394 | cache_ptr->howto = &elf_howto_table[indx]; |
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 | 403 | static bfd_boolean |
252b5132 RH |
404 | elf_i386_is_local_label_name (abfd, name) |
405 | bfd *abfd; | |
406 | const char *name; | |
407 | { | |
408 | if (name[0] == '.' && name[1] == 'X') | |
b34976b6 | 409 | return TRUE; |
252b5132 RH |
410 | |
411 | return _bfd_elf_is_local_label_name (abfd, name); | |
412 | } | |
413 | \f | |
38701953 | 414 | /* Support for core dump NOTE sections. */ |
b34976b6 | 415 | static bfd_boolean |
38701953 AM |
416 | elf_i386_grok_prstatus (abfd, note) |
417 | bfd *abfd; | |
418 | Elf_Internal_Note *note; | |
419 | { | |
420 | int offset; | |
421 | size_t raw_size; | |
422 | ||
423 | switch (note->descsz) | |
424 | { | |
425 | default: | |
b34976b6 | 426 | return FALSE; |
38701953 AM |
427 | |
428 | case 144: /* Linux/i386 */ | |
429 | /* pr_cursig */ | |
430 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
431 | ||
432 | /* pr_pid */ | |
433 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
434 | ||
435 | /* pr_reg */ | |
436 | offset = 72; | |
437 | raw_size = 68; | |
438 | ||
439 | break; | |
440 | } | |
441 | ||
442 | /* Make a ".reg/999" section. */ | |
443 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
444 | raw_size, note->descpos + offset); | |
445 | } | |
446 | ||
b34976b6 | 447 | static bfd_boolean |
38701953 AM |
448 | elf_i386_grok_psinfo (abfd, note) |
449 | bfd *abfd; | |
450 | Elf_Internal_Note *note; | |
451 | { | |
452 | switch (note->descsz) | |
453 | { | |
454 | default: | |
b34976b6 | 455 | return FALSE; |
38701953 | 456 | |
fd29389c | 457 | case 124: /* Linux/i386 elf_prpsinfo */ |
38701953 AM |
458 | elf_tdata (abfd)->core_program |
459 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
460 | elf_tdata (abfd)->core_command | |
461 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
462 | } | |
463 | ||
464 | /* Note that for some reason, a spurious space is tacked | |
465 | onto the end of the args in some (at least one anyway) | |
466 | implementations, so strip it off if it exists. */ | |
467 | ||
468 | { | |
469 | char *command = elf_tdata (abfd)->core_command; | |
470 | int n = strlen (command); | |
471 | ||
472 | if (0 < n && command[n - 1] == ' ') | |
473 | command[n - 1] = '\0'; | |
474 | } | |
475 | ||
b34976b6 | 476 | return TRUE; |
38701953 AM |
477 | } |
478 | \f | |
479 | /* Functions for the i386 ELF linker. | |
480 | ||
481 | In order to gain some understanding of code in this file without | |
482 | knowing all the intricate details of the linker, note the | |
483 | following: | |
484 | ||
485 | Functions named elf_i386_* are called by external routines, other | |
486 | functions are only called locally. elf_i386_* functions appear | |
487 | in this file more or less in the order in which they are called | |
488 | from external routines. eg. elf_i386_check_relocs is called | |
489 | early in the link process, elf_i386_finish_dynamic_sections is | |
490 | one of the last functions. */ | |
491 | ||
252b5132 RH |
492 | |
493 | /* The name of the dynamic interpreter. This is put in the .interp | |
494 | section. */ | |
495 | ||
496 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
497 | ||
a23b6845 AM |
498 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
499 | copying dynamic variables from a shared lib into an app's dynbss | |
500 | section, and instead use a dynamic relocation to point into the | |
501 | shared lib. */ | |
502 | #define ELIMINATE_COPY_RELOCS 1 | |
503 | ||
252b5132 RH |
504 | /* The size in bytes of an entry in the procedure linkage table. */ |
505 | ||
506 | #define PLT_ENTRY_SIZE 16 | |
507 | ||
508 | /* The first entry in an absolute procedure linkage table looks like | |
509 | this. See the SVR4 ABI i386 supplement to see how this works. */ | |
510 | ||
511 | static const bfd_byte elf_i386_plt0_entry[PLT_ENTRY_SIZE] = | |
512 | { | |
513 | 0xff, 0x35, /* pushl contents of address */ | |
514 | 0, 0, 0, 0, /* replaced with address of .got + 4. */ | |
515 | 0xff, 0x25, /* jmp indirect */ | |
516 | 0, 0, 0, 0, /* replaced with address of .got + 8. */ | |
517 | 0, 0, 0, 0 /* pad out to 16 bytes. */ | |
518 | }; | |
519 | ||
520 | /* Subsequent entries in an absolute procedure linkage table look like | |
521 | this. */ | |
522 | ||
523 | static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] = | |
524 | { | |
525 | 0xff, 0x25, /* jmp indirect */ | |
526 | 0, 0, 0, 0, /* replaced with address of this symbol in .got. */ | |
527 | 0x68, /* pushl immediate */ | |
528 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
529 | 0xe9, /* jmp relative */ | |
530 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
531 | }; | |
532 | ||
533 | /* The first entry in a PIC procedure linkage table look like this. */ | |
534 | ||
535 | static const bfd_byte elf_i386_pic_plt0_entry[PLT_ENTRY_SIZE] = | |
536 | { | |
537 | 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */ | |
538 | 0xff, 0xa3, 8, 0, 0, 0, /* jmp *8(%ebx) */ | |
539 | 0, 0, 0, 0 /* pad out to 16 bytes. */ | |
540 | }; | |
541 | ||
542 | /* Subsequent entries in a PIC procedure linkage table look like this. */ | |
543 | ||
544 | static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] = | |
545 | { | |
546 | 0xff, 0xa3, /* jmp *offset(%ebx) */ | |
547 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
548 | 0x68, /* pushl immediate */ | |
549 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
550 | 0xe9, /* jmp relative */ | |
551 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
552 | }; | |
553 | ||
554 | /* The i386 linker needs to keep track of the number of relocs that it | |
ffb2e45b AM |
555 | decides to copy as dynamic relocs in check_relocs for each symbol. |
556 | This is so that it can later discard them if they are found to be | |
557 | unnecessary. We store the information in a field extending the | |
558 | regular ELF linker hash table. */ | |
252b5132 | 559 | |
ffb2e45b | 560 | struct elf_i386_dyn_relocs |
252b5132 | 561 | { |
ffb2e45b | 562 | struct elf_i386_dyn_relocs *next; |
0c715baa AM |
563 | |
564 | /* The input section of the reloc. */ | |
565 | asection *sec; | |
566 | ||
567 | /* Total number of relocs copied for the input section. */ | |
252b5132 | 568 | bfd_size_type count; |
0c715baa AM |
569 | |
570 | /* Number of pc-relative relocs copied for the input section. */ | |
571 | bfd_size_type pc_count; | |
252b5132 RH |
572 | }; |
573 | ||
574 | /* i386 ELF linker hash entry. */ | |
575 | ||
576 | struct elf_i386_link_hash_entry | |
577 | { | |
ebe50bae | 578 | struct elf_link_hash_entry elf; |
252b5132 | 579 | |
0c715baa | 580 | /* Track dynamic relocs copied for this symbol. */ |
ffb2e45b | 581 | struct elf_i386_dyn_relocs *dyn_relocs; |
13ae64f3 | 582 | |
37e55690 JJ |
583 | #define GOT_UNKNOWN 0 |
584 | #define GOT_NORMAL 1 | |
585 | #define GOT_TLS_GD 2 | |
586 | #define GOT_TLS_IE 4 | |
587 | #define GOT_TLS_IE_POS 5 | |
588 | #define GOT_TLS_IE_NEG 6 | |
589 | #define GOT_TLS_IE_BOTH 7 | |
590 | unsigned char tls_type; | |
13ae64f3 JJ |
591 | }; |
592 | ||
593 | #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent)) | |
594 | ||
595 | struct elf_i386_obj_tdata | |
596 | { | |
597 | struct elf_obj_tdata root; | |
598 | ||
599 | /* tls_type for each local got entry. */ | |
600 | char *local_got_tls_type; | |
252b5132 RH |
601 | }; |
602 | ||
13ae64f3 JJ |
603 | #define elf_i386_tdata(abfd) \ |
604 | ((struct elf_i386_obj_tdata *) (abfd)->tdata.any) | |
605 | ||
606 | #define elf_i386_local_got_tls_type(abfd) \ | |
607 | (elf_i386_tdata (abfd)->local_got_tls_type) | |
608 | ||
b34976b6 | 609 | static bfd_boolean |
13ae64f3 JJ |
610 | elf_i386_mkobject (abfd) |
611 | bfd *abfd; | |
612 | { | |
613 | bfd_size_type amt = sizeof (struct elf_i386_obj_tdata); | |
614 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
615 | if (abfd->tdata.any == NULL) | |
b34976b6 AM |
616 | return FALSE; |
617 | return TRUE; | |
13ae64f3 | 618 | } |
cedb70c5 | 619 | |
b34976b6 | 620 | static bfd_boolean |
13ae64f3 JJ |
621 | elf_i386_object_p (abfd) |
622 | bfd *abfd; | |
623 | { | |
624 | /* Allocate our special target data. */ | |
625 | struct elf_i386_obj_tdata *new_tdata; | |
626 | bfd_size_type amt = sizeof (struct elf_i386_obj_tdata); | |
627 | new_tdata = bfd_zalloc (abfd, amt); | |
628 | if (new_tdata == NULL) | |
b34976b6 | 629 | return FALSE; |
13ae64f3 JJ |
630 | new_tdata->root = *abfd->tdata.elf_obj_data; |
631 | abfd->tdata.any = new_tdata; | |
b34976b6 | 632 | return TRUE; |
13ae64f3 JJ |
633 | } |
634 | ||
252b5132 RH |
635 | /* i386 ELF linker hash table. */ |
636 | ||
637 | struct elf_i386_link_hash_table | |
638 | { | |
ebe50bae | 639 | struct elf_link_hash_table elf; |
252b5132 | 640 | |
6725bdbf AM |
641 | /* Short-cuts to get to dynamic linker sections. */ |
642 | asection *sgot; | |
643 | asection *sgotplt; | |
644 | asection *srelgot; | |
645 | asection *splt; | |
646 | asection *srelplt; | |
647 | asection *sdynbss; | |
648 | asection *srelbss; | |
ec338859 | 649 | |
13ae64f3 JJ |
650 | union { |
651 | bfd_signed_vma refcount; | |
652 | bfd_vma offset; | |
653 | } tls_ldm_got; | |
654 | ||
ec338859 AM |
655 | /* Small local sym to section mapping cache. */ |
656 | struct sym_sec_cache sym_sec; | |
6725bdbf | 657 | }; |
252b5132 RH |
658 | |
659 | /* Get the i386 ELF linker hash table from a link_info structure. */ | |
660 | ||
661 | #define elf_i386_hash_table(p) \ | |
662 | ((struct elf_i386_link_hash_table *) ((p)->hash)) | |
663 | ||
664 | /* Create an entry in an i386 ELF linker hash table. */ | |
665 | ||
666 | static struct bfd_hash_entry * | |
38701953 | 667 | link_hash_newfunc (entry, table, string) |
252b5132 RH |
668 | struct bfd_hash_entry *entry; |
669 | struct bfd_hash_table *table; | |
670 | const char *string; | |
671 | { | |
252b5132 RH |
672 | /* Allocate the structure if it has not already been allocated by a |
673 | subclass. */ | |
ebe50bae AM |
674 | if (entry == NULL) |
675 | { | |
676 | entry = bfd_hash_allocate (table, | |
677 | sizeof (struct elf_i386_link_hash_entry)); | |
678 | if (entry == NULL) | |
679 | return entry; | |
680 | } | |
252b5132 RH |
681 | |
682 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
683 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
684 | if (entry != NULL) | |
252b5132 | 685 | { |
ebe50bae AM |
686 | struct elf_i386_link_hash_entry *eh; |
687 | ||
688 | eh = (struct elf_i386_link_hash_entry *) entry; | |
689 | eh->dyn_relocs = NULL; | |
13ae64f3 | 690 | eh->tls_type = GOT_UNKNOWN; |
252b5132 RH |
691 | } |
692 | ||
ebe50bae | 693 | return entry; |
252b5132 RH |
694 | } |
695 | ||
696 | /* Create an i386 ELF linker hash table. */ | |
697 | ||
698 | static struct bfd_link_hash_table * | |
699 | elf_i386_link_hash_table_create (abfd) | |
700 | bfd *abfd; | |
701 | { | |
702 | struct elf_i386_link_hash_table *ret; | |
dc810e39 | 703 | bfd_size_type amt = sizeof (struct elf_i386_link_hash_table); |
252b5132 | 704 | |
e2d34d7d | 705 | ret = (struct elf_i386_link_hash_table *) bfd_malloc (amt); |
ebe50bae | 706 | if (ret == NULL) |
252b5132 RH |
707 | return NULL; |
708 | ||
ebe50bae | 709 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc)) |
252b5132 | 710 | { |
e2d34d7d | 711 | free (ret); |
252b5132 RH |
712 | return NULL; |
713 | } | |
714 | ||
6725bdbf AM |
715 | ret->sgot = NULL; |
716 | ret->sgotplt = NULL; | |
717 | ret->srelgot = NULL; | |
718 | ret->splt = NULL; | |
719 | ret->srelplt = NULL; | |
720 | ret->sdynbss = NULL; | |
721 | ret->srelbss = NULL; | |
7a624474 | 722 | ret->tls_ldm_got.refcount = 0; |
ec338859 | 723 | ret->sym_sec.abfd = NULL; |
6725bdbf | 724 | |
ebe50bae | 725 | return &ret->elf.root; |
252b5132 RH |
726 | } |
727 | ||
6725bdbf AM |
728 | /* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up |
729 | shortcuts to them in our hash table. */ | |
730 | ||
b34976b6 | 731 | static bfd_boolean |
6725bdbf AM |
732 | create_got_section (dynobj, info) |
733 | bfd *dynobj; | |
734 | struct bfd_link_info *info; | |
735 | { | |
736 | struct elf_i386_link_hash_table *htab; | |
737 | ||
738 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 739 | return FALSE; |
6725bdbf AM |
740 | |
741 | htab = elf_i386_hash_table (info); | |
742 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
743 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
744 | if (!htab->sgot || !htab->sgotplt) | |
745 | abort (); | |
746 | ||
747 | htab->srelgot = bfd_make_section (dynobj, ".rel.got"); | |
748 | if (htab->srelgot == NULL | |
749 | || ! bfd_set_section_flags (dynobj, htab->srelgot, | |
750 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
751 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
752 | | SEC_READONLY)) | |
753 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) | |
b34976b6 AM |
754 | return FALSE; |
755 | return TRUE; | |
6725bdbf AM |
756 | } |
757 | ||
758 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and | |
759 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
760 | hash table. */ | |
761 | ||
b34976b6 | 762 | static bfd_boolean |
6725bdbf AM |
763 | elf_i386_create_dynamic_sections (dynobj, info) |
764 | bfd *dynobj; | |
765 | struct bfd_link_info *info; | |
766 | { | |
767 | struct elf_i386_link_hash_table *htab; | |
768 | ||
769 | htab = elf_i386_hash_table (info); | |
770 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
b34976b6 | 771 | return FALSE; |
6725bdbf AM |
772 | |
773 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 774 | return FALSE; |
6725bdbf AM |
775 | |
776 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
777 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt"); | |
778 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
779 | if (!info->shared) | |
780 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
781 | ||
782 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
783 | || (!info->shared && !htab->srelbss)) | |
784 | abort (); | |
785 | ||
b34976b6 | 786 | return TRUE; |
6725bdbf AM |
787 | } |
788 | ||
ebe50bae AM |
789 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
790 | ||
51b64d56 | 791 | static void |
b48fa14c AM |
792 | elf_i386_copy_indirect_symbol (bed, dir, ind) |
793 | struct elf_backend_data *bed; | |
ebe50bae AM |
794 | struct elf_link_hash_entry *dir, *ind; |
795 | { | |
796 | struct elf_i386_link_hash_entry *edir, *eind; | |
797 | ||
798 | edir = (struct elf_i386_link_hash_entry *) dir; | |
799 | eind = (struct elf_i386_link_hash_entry *) ind; | |
800 | ||
bbd7ec4a | 801 | if (eind->dyn_relocs != NULL) |
ebe50bae | 802 | { |
bbd7ec4a AM |
803 | if (edir->dyn_relocs != NULL) |
804 | { | |
805 | struct elf_i386_dyn_relocs **pp; | |
806 | struct elf_i386_dyn_relocs *p; | |
807 | ||
1e370bd2 | 808 | if (ind->root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
809 | abort (); |
810 | ||
811 | /* Add reloc counts against the weak sym to the strong sym | |
812 | list. Merge any entries against the same section. */ | |
813 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
814 | { | |
815 | struct elf_i386_dyn_relocs *q; | |
816 | ||
817 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
818 | if (q->sec == p->sec) | |
819 | { | |
820 | q->pc_count += p->pc_count; | |
821 | q->count += p->count; | |
822 | *pp = p->next; | |
823 | break; | |
824 | } | |
825 | if (q == NULL) | |
826 | pp = &p->next; | |
827 | } | |
828 | *pp = edir->dyn_relocs; | |
829 | } | |
830 | ||
ebe50bae AM |
831 | edir->dyn_relocs = eind->dyn_relocs; |
832 | eind->dyn_relocs = NULL; | |
833 | } | |
ebe50bae | 834 | |
cd67d266 JJ |
835 | if (ind->root.type == bfd_link_hash_indirect |
836 | && dir->got.refcount <= 0) | |
837 | { | |
838 | edir->tls_type = eind->tls_type; | |
839 | eind->tls_type = GOT_UNKNOWN; | |
840 | } | |
81848ca0 AM |
841 | |
842 | if (ELIMINATE_COPY_RELOCS | |
843 | && ind->root.type != bfd_link_hash_indirect | |
844 | && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0) | |
845 | /* If called to transfer flags for a weakdef during processing | |
846 | of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF. | |
847 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
848 | dir->elf_link_hash_flags |= | |
849 | (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC | |
850 | | ELF_LINK_HASH_REF_REGULAR | |
851 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK)); | |
852 | else | |
853 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); | |
ebe50bae AM |
854 | } |
855 | ||
13ae64f3 JJ |
856 | static int |
857 | elf_i386_tls_transition (info, r_type, is_local) | |
858 | struct bfd_link_info *info; | |
859 | int r_type; | |
860 | int is_local; | |
861 | { | |
862 | if (info->shared) | |
863 | return r_type; | |
864 | ||
865 | switch (r_type) | |
866 | { | |
867 | case R_386_TLS_GD: | |
868 | case R_386_TLS_IE_32: | |
869 | if (is_local) | |
870 | return R_386_TLS_LE_32; | |
871 | return R_386_TLS_IE_32; | |
37e55690 JJ |
872 | case R_386_TLS_IE: |
873 | case R_386_TLS_GOTIE: | |
874 | if (is_local) | |
875 | return R_386_TLS_LE_32; | |
876 | return r_type; | |
13ae64f3 JJ |
877 | case R_386_TLS_LDM: |
878 | return R_386_TLS_LE_32; | |
879 | } | |
880 | ||
881 | return r_type; | |
882 | } | |
883 | ||
252b5132 | 884 | /* Look through the relocs for a section during the first phase, and |
0ac8d2ca AM |
885 | calculate needed space in the global offset table, procedure linkage |
886 | table, and dynamic reloc sections. */ | |
252b5132 | 887 | |
b34976b6 | 888 | static bfd_boolean |
252b5132 RH |
889 | elf_i386_check_relocs (abfd, info, sec, relocs) |
890 | bfd *abfd; | |
891 | struct bfd_link_info *info; | |
892 | asection *sec; | |
893 | const Elf_Internal_Rela *relocs; | |
894 | { | |
6725bdbf | 895 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
896 | Elf_Internal_Shdr *symtab_hdr; |
897 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
898 | const Elf_Internal_Rela *rel; |
899 | const Elf_Internal_Rela *rel_end; | |
252b5132 RH |
900 | asection *sreloc; |
901 | ||
902 | if (info->relocateable) | |
b34976b6 | 903 | return TRUE; |
252b5132 | 904 | |
6725bdbf | 905 | htab = elf_i386_hash_table (info); |
252b5132 RH |
906 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
907 | sym_hashes = elf_sym_hashes (abfd); | |
252b5132 | 908 | |
252b5132 RH |
909 | sreloc = NULL; |
910 | ||
911 | rel_end = relocs + sec->reloc_count; | |
912 | for (rel = relocs; rel < rel_end; rel++) | |
913 | { | |
13ae64f3 | 914 | unsigned int r_type; |
252b5132 RH |
915 | unsigned long r_symndx; |
916 | struct elf_link_hash_entry *h; | |
917 | ||
918 | r_symndx = ELF32_R_SYM (rel->r_info); | |
13ae64f3 | 919 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 920 | |
d9bc7a44 | 921 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
f5f31454 | 922 | { |
8f615d07 AM |
923 | (*_bfd_error_handler) (_("%s: bad symbol index: %d"), |
924 | bfd_archive_filename (abfd), | |
925 | r_symndx); | |
b34976b6 | 926 | return FALSE; |
f5f31454 L |
927 | } |
928 | ||
252b5132 RH |
929 | if (r_symndx < symtab_hdr->sh_info) |
930 | h = NULL; | |
931 | else | |
932 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
933 | ||
13ae64f3 JJ |
934 | r_type = elf_i386_tls_transition (info, r_type, h == NULL); |
935 | ||
936 | switch (r_type) | |
252b5132 | 937 | { |
37e55690 JJ |
938 | case R_386_TLS_LDM: |
939 | htab->tls_ldm_got.refcount += 1; | |
940 | goto create_got; | |
941 | ||
942 | case R_386_PLT32: | |
943 | /* This symbol requires a procedure linkage table entry. We | |
944 | actually build the entry in adjust_dynamic_symbol, | |
945 | because this might be a case of linking PIC code which is | |
946 | never referenced by a dynamic object, in which case we | |
947 | don't need to generate a procedure linkage table entry | |
948 | after all. */ | |
949 | ||
950 | /* If this is a local symbol, we resolve it directly without | |
951 | creating a procedure linkage table entry. */ | |
952 | if (h == NULL) | |
953 | continue; | |
954 | ||
955 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
956 | h->plt.refcount += 1; | |
957 | break; | |
958 | ||
13ae64f3 | 959 | case R_386_TLS_IE_32: |
37e55690 JJ |
960 | case R_386_TLS_IE: |
961 | case R_386_TLS_GOTIE: | |
13ae64f3 JJ |
962 | if (info->shared) |
963 | info->flags |= DF_STATIC_TLS; | |
37e55690 JJ |
964 | /* Fall through */ |
965 | ||
252b5132 | 966 | case R_386_GOT32: |
13ae64f3 | 967 | case R_386_TLS_GD: |
252b5132 | 968 | /* This symbol requires a global offset table entry. */ |
13ae64f3 JJ |
969 | { |
970 | int tls_type, old_tls_type; | |
971 | ||
972 | switch (r_type) | |
973 | { | |
974 | default: | |
975 | case R_386_GOT32: tls_type = GOT_NORMAL; break; | |
976 | case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; | |
37e55690 JJ |
977 | case R_386_TLS_IE_32: |
978 | if (ELF32_R_TYPE (rel->r_info) == r_type) | |
979 | tls_type = GOT_TLS_IE_NEG; | |
980 | else | |
981 | /* If this is a GD->IE transition, we may use either of | |
982 | R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ | |
983 | tls_type = GOT_TLS_IE; | |
984 | break; | |
985 | case R_386_TLS_IE: | |
986 | case R_386_TLS_GOTIE: | |
987 | tls_type = GOT_TLS_IE_POS; break; | |
13ae64f3 JJ |
988 | } |
989 | ||
990 | if (h != NULL) | |
991 | { | |
992 | h->got.refcount += 1; | |
993 | old_tls_type = elf_i386_hash_entry(h)->tls_type; | |
994 | } | |
995 | else | |
996 | { | |
997 | bfd_signed_vma *local_got_refcounts; | |
998 | ||
999 | /* This is a global offset table entry for a local symbol. */ | |
1000 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1001 | if (local_got_refcounts == NULL) | |
1002 | { | |
1003 | bfd_size_type size; | |
1004 | ||
1005 | size = symtab_hdr->sh_info; | |
1006 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); | |
1007 | local_got_refcounts = ((bfd_signed_vma *) | |
1008 | bfd_zalloc (abfd, size)); | |
1009 | if (local_got_refcounts == NULL) | |
b34976b6 | 1010 | return FALSE; |
13ae64f3 JJ |
1011 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
1012 | elf_i386_local_got_tls_type (abfd) | |
1013 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
1014 | } | |
1015 | local_got_refcounts[r_symndx] += 1; | |
1016 | old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx]; | |
1017 | } | |
1018 | ||
37e55690 JJ |
1019 | if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) |
1020 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1021 | /* If a TLS symbol is accessed using IE at least once, |
1022 | there is no point to use dynamic model for it. */ | |
37e55690 JJ |
1023 | else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
1024 | && (old_tls_type != GOT_TLS_GD | |
1025 | || (tls_type & GOT_TLS_IE) == 0)) | |
13ae64f3 | 1026 | { |
37e55690 JJ |
1027 | if ((old_tls_type & GOT_TLS_IE) && tls_type == GOT_TLS_GD) |
1028 | tls_type = old_tls_type; | |
13ae64f3 JJ |
1029 | else |
1030 | { | |
1031 | (*_bfd_error_handler) | |
1032 | (_("%s: `%s' accessed both as normal and thread local symbol"), | |
37e55690 JJ |
1033 | bfd_archive_filename (abfd), |
1034 | h ? h->root.root.string : "<local>"); | |
b34976b6 | 1035 | return FALSE; |
13ae64f3 JJ |
1036 | } |
1037 | } | |
1038 | ||
1039 | if (old_tls_type != tls_type) | |
1040 | { | |
1041 | if (h != NULL) | |
1042 | elf_i386_hash_entry (h)->tls_type = tls_type; | |
1043 | else | |
1044 | elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1045 | } | |
1046 | } | |
0ac8d2ca AM |
1047 | /* Fall through */ |
1048 | ||
1049 | case R_386_GOTOFF: | |
1050 | case R_386_GOTPC: | |
13ae64f3 | 1051 | create_got: |
0ac8d2ca AM |
1052 | if (htab->sgot == NULL) |
1053 | { | |
1054 | if (htab->elf.dynobj == NULL) | |
1055 | htab->elf.dynobj = abfd; | |
1056 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 1057 | return FALSE; |
0ac8d2ca | 1058 | } |
37e55690 JJ |
1059 | if (r_type != R_386_TLS_IE) |
1060 | break; | |
1061 | /* Fall through */ | |
252b5132 | 1062 | |
37e55690 JJ |
1063 | case R_386_TLS_LE_32: |
1064 | case R_386_TLS_LE: | |
1065 | if (!info->shared) | |
1066 | break; | |
bffbf940 | 1067 | info->flags |= DF_STATIC_TLS; |
b34976b6 | 1068 | /* Fall through */ |
252b5132 RH |
1069 | |
1070 | case R_386_32: | |
1071 | case R_386_PC32: | |
12d0ee4a | 1072 | if (h != NULL && !info->shared) |
6725bdbf | 1073 | { |
12d0ee4a | 1074 | /* If this reloc is in a read-only section, we might |
ebe50bae AM |
1075 | need a copy reloc. We can't check reliably at this |
1076 | stage whether the section is read-only, as input | |
1077 | sections have not yet been mapped to output sections. | |
1078 | Tentatively set the flag for now, and correct in | |
1079 | adjust_dynamic_symbol. */ | |
1080 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
12d0ee4a AM |
1081 | |
1082 | /* We may need a .plt entry if the function this reloc | |
1083 | refers to is in a shared lib. */ | |
51b64d56 | 1084 | h->plt.refcount += 1; |
6725bdbf | 1085 | } |
7843f00e | 1086 | |
252b5132 | 1087 | /* If we are creating a shared library, and this is a reloc |
f69da49f AM |
1088 | against a global symbol, or a non PC relative reloc |
1089 | against a local symbol, then we need to copy the reloc | |
1090 | into the shared library. However, if we are linking with | |
1091 | -Bsymbolic, we do not need to copy a reloc against a | |
1092 | global symbol which is defined in an object we are | |
1093 | including in the link (i.e., DEF_REGULAR is set). At | |
1094 | this point we have not seen all the input files, so it is | |
1095 | possible that DEF_REGULAR is not set now but will be set | |
1f655a09 L |
1096 | later (it is never cleared). In case of a weak definition, |
1097 | DEF_REGULAR may be cleared later by a strong definition in | |
ebe50bae | 1098 | a shared library. We account for that possibility below by |
1f655a09 L |
1099 | storing information in the relocs_copied field of the hash |
1100 | table entry. A similar situation occurs when creating | |
1101 | shared libraries and symbol visibility changes render the | |
12d0ee4a | 1102 | symbol local. |
56882138 | 1103 | |
12d0ee4a AM |
1104 | If on the other hand, we are creating an executable, we |
1105 | may need to keep relocations for symbols satisfied by a | |
1106 | dynamic library if we manage to avoid copy relocs for the | |
1107 | symbol. */ | |
1108 | if ((info->shared | |
1109 | && (sec->flags & SEC_ALLOC) != 0 | |
13ae64f3 | 1110 | && (r_type != R_386_PC32 |
12d0ee4a AM |
1111 | || (h != NULL |
1112 | && (! info->symbolic | |
1113 | || h->root.type == bfd_link_hash_defweak | |
1114 | || (h->elf_link_hash_flags | |
1115 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
a23b6845 AM |
1116 | || (ELIMINATE_COPY_RELOCS |
1117 | && !info->shared | |
12d0ee4a AM |
1118 | && (sec->flags & SEC_ALLOC) != 0 |
1119 | && h != NULL | |
12d0ee4a AM |
1120 | && (h->root.type == bfd_link_hash_defweak |
1121 | || (h->elf_link_hash_flags | |
1122 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
252b5132 | 1123 | { |
ec338859 AM |
1124 | struct elf_i386_dyn_relocs *p; |
1125 | struct elf_i386_dyn_relocs **head; | |
1126 | ||
12d0ee4a AM |
1127 | /* We must copy these reloc types into the output file. |
1128 | Create a reloc section in dynobj and make room for | |
1129 | this reloc. */ | |
252b5132 RH |
1130 | if (sreloc == NULL) |
1131 | { | |
1132 | const char *name; | |
0ac8d2ca | 1133 | bfd *dynobj; |
e92d460e AM |
1134 | unsigned int strndx = elf_elfheader (abfd)->e_shstrndx; |
1135 | unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name; | |
252b5132 | 1136 | |
e92d460e | 1137 | name = bfd_elf_string_from_elf_section (abfd, strndx, shnam); |
252b5132 | 1138 | if (name == NULL) |
b34976b6 | 1139 | return FALSE; |
252b5132 | 1140 | |
c8492176 L |
1141 | if (strncmp (name, ".rel", 4) != 0 |
1142 | || strcmp (bfd_get_section_name (abfd, sec), | |
1143 | name + 4) != 0) | |
1144 | { | |
0c715baa AM |
1145 | (*_bfd_error_handler) |
1146 | (_("%s: bad relocation section name `%s\'"), | |
1147 | bfd_archive_filename (abfd), name); | |
f5f31454 | 1148 | } |
252b5132 | 1149 | |
0ac8d2ca AM |
1150 | if (htab->elf.dynobj == NULL) |
1151 | htab->elf.dynobj = abfd; | |
1152 | ||
1153 | dynobj = htab->elf.dynobj; | |
252b5132 RH |
1154 | sreloc = bfd_get_section_by_name (dynobj, name); |
1155 | if (sreloc == NULL) | |
1156 | { | |
1157 | flagword flags; | |
1158 | ||
1159 | sreloc = bfd_make_section (dynobj, name); | |
1160 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
1161 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1162 | if ((sec->flags & SEC_ALLOC) != 0) | |
1163 | flags |= SEC_ALLOC | SEC_LOAD; | |
1164 | if (sreloc == NULL | |
1165 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
1166 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 1167 | return FALSE; |
252b5132 | 1168 | } |
0c715baa | 1169 | elf_section_data (sec)->sreloc = sreloc; |
252b5132 RH |
1170 | } |
1171 | ||
0c715baa AM |
1172 | /* If this is a global symbol, we count the number of |
1173 | relocations we need for this symbol. */ | |
1174 | if (h != NULL) | |
252b5132 | 1175 | { |
ec338859 | 1176 | head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs; |
0c715baa AM |
1177 | } |
1178 | else | |
1179 | { | |
ec338859 AM |
1180 | /* Track dynamic relocs needed for local syms too. |
1181 | We really need local syms available to do this | |
1182 | easily. Oh well. */ | |
1183 | ||
1184 | asection *s; | |
1185 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
1186 | sec, r_symndx); | |
1187 | if (s == NULL) | |
b34976b6 | 1188 | return FALSE; |
ec338859 AM |
1189 | |
1190 | head = ((struct elf_i386_dyn_relocs **) | |
1191 | &elf_section_data (s)->local_dynrel); | |
1192 | } | |
1193 | ||
1194 | p = *head; | |
1195 | if (p == NULL || p->sec != sec) | |
1196 | { | |
1197 | bfd_size_type amt = sizeof *p; | |
1198 | p = ((struct elf_i386_dyn_relocs *) | |
1199 | bfd_alloc (htab->elf.dynobj, amt)); | |
1200 | if (p == NULL) | |
b34976b6 | 1201 | return FALSE; |
ec338859 AM |
1202 | p->next = *head; |
1203 | *head = p; | |
1204 | p->sec = sec; | |
1205 | p->count = 0; | |
1206 | p->pc_count = 0; | |
252b5132 | 1207 | } |
ec338859 AM |
1208 | |
1209 | p->count += 1; | |
13ae64f3 | 1210 | if (r_type == R_386_PC32) |
ec338859 | 1211 | p->pc_count += 1; |
252b5132 | 1212 | } |
252b5132 RH |
1213 | break; |
1214 | ||
1215 | /* This relocation describes the C++ object vtable hierarchy. | |
1216 | Reconstruct it for later use during GC. */ | |
1217 | case R_386_GNU_VTINHERIT: | |
1218 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1219 | return FALSE; |
252b5132 RH |
1220 | break; |
1221 | ||
1222 | /* This relocation describes which C++ vtable entries are actually | |
1223 | used. Record for later use during GC. */ | |
1224 | case R_386_GNU_VTENTRY: | |
1225 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1226 | return FALSE; |
252b5132 RH |
1227 | break; |
1228 | ||
1229 | default: | |
1230 | break; | |
1231 | } | |
1232 | } | |
1233 | ||
b34976b6 | 1234 | return TRUE; |
252b5132 RH |
1235 | } |
1236 | ||
1237 | /* Return the section that should be marked against GC for a given | |
1238 | relocation. */ | |
1239 | ||
1240 | static asection * | |
1e2f5b6e AM |
1241 | elf_i386_gc_mark_hook (sec, info, rel, h, sym) |
1242 | asection *sec; | |
7442e600 | 1243 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1244 | Elf_Internal_Rela *rel; |
1245 | struct elf_link_hash_entry *h; | |
1246 | Elf_Internal_Sym *sym; | |
1247 | { | |
1248 | if (h != NULL) | |
1249 | { | |
1250 | switch (ELF32_R_TYPE (rel->r_info)) | |
1251 | { | |
1252 | case R_386_GNU_VTINHERIT: | |
1253 | case R_386_GNU_VTENTRY: | |
1254 | break; | |
1255 | ||
1256 | default: | |
1257 | switch (h->root.type) | |
1258 | { | |
1259 | case bfd_link_hash_defined: | |
1260 | case bfd_link_hash_defweak: | |
1261 | return h->root.u.def.section; | |
1262 | ||
1263 | case bfd_link_hash_common: | |
1264 | return h->root.u.c.p->section; | |
1265 | ||
1266 | default: | |
1267 | break; | |
1268 | } | |
1269 | } | |
1270 | } | |
1271 | else | |
1e2f5b6e | 1272 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
1273 | |
1274 | return NULL; | |
1275 | } | |
1276 | ||
1277 | /* Update the got entry reference counts for the section being removed. */ | |
1278 | ||
b34976b6 | 1279 | static bfd_boolean |
252b5132 | 1280 | elf_i386_gc_sweep_hook (abfd, info, sec, relocs) |
dd5724d5 | 1281 | bfd *abfd; |
6725bdbf | 1282 | struct bfd_link_info *info; |
dd5724d5 AM |
1283 | asection *sec; |
1284 | const Elf_Internal_Rela *relocs; | |
252b5132 | 1285 | { |
dd5724d5 AM |
1286 | Elf_Internal_Shdr *symtab_hdr; |
1287 | struct elf_link_hash_entry **sym_hashes; | |
1288 | bfd_signed_vma *local_got_refcounts; | |
1289 | const Elf_Internal_Rela *rel, *relend; | |
dd5724d5 | 1290 | |
ec338859 | 1291 | elf_section_data (sec)->local_dynrel = NULL; |
dd5724d5 | 1292 | |
6725bdbf AM |
1293 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1294 | sym_hashes = elf_sym_hashes (abfd); | |
1295 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
dd5724d5 AM |
1296 | |
1297 | relend = relocs + sec->reloc_count; | |
1298 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1299 | { |
1300 | unsigned long r_symndx; | |
1301 | unsigned int r_type; | |
1302 | struct elf_link_hash_entry *h = NULL; | |
37e55690 | 1303 | |
26e41594 AM |
1304 | r_symndx = ELF32_R_SYM (rel->r_info); |
1305 | if (r_symndx >= symtab_hdr->sh_info) | |
1306 | { | |
1307 | struct elf_i386_link_hash_entry *eh; | |
1308 | struct elf_i386_dyn_relocs **pp; | |
1309 | struct elf_i386_dyn_relocs *p; | |
dd5724d5 | 1310 | |
26e41594 AM |
1311 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1312 | eh = (struct elf_i386_link_hash_entry *) h; | |
0c715baa | 1313 | |
26e41594 AM |
1314 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1315 | if (p->sec == sec) | |
1316 | { | |
1317 | /* Everything must go for SEC. */ | |
1318 | *pp = p->next; | |
1319 | break; | |
1320 | } | |
1321 | } | |
0c715baa | 1322 | |
26e41594 AM |
1323 | r_type = ELF32_R_TYPE (rel->r_info); |
1324 | r_type = elf_i386_tls_transition (info, r_type, h != NULL); | |
1325 | switch (r_type) | |
1326 | { | |
1327 | case R_386_TLS_LDM: | |
1328 | if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0) | |
1329 | elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1; | |
1330 | break; | |
0c715baa | 1331 | |
26e41594 AM |
1332 | case R_386_TLS_GD: |
1333 | case R_386_TLS_IE_32: | |
1334 | case R_386_TLS_IE: | |
1335 | case R_386_TLS_GOTIE: | |
1336 | case R_386_GOT32: | |
1337 | if (h != NULL) | |
1338 | { | |
1339 | if (h->got.refcount > 0) | |
1340 | h->got.refcount -= 1; | |
1341 | } | |
1342 | else if (local_got_refcounts != NULL) | |
1343 | { | |
1344 | if (local_got_refcounts[r_symndx] > 0) | |
1345 | local_got_refcounts[r_symndx] -= 1; | |
1346 | } | |
1347 | break; | |
0c715baa | 1348 | |
26e41594 AM |
1349 | case R_386_32: |
1350 | case R_386_PC32: | |
1351 | if (info->shared) | |
1352 | break; | |
1353 | /* Fall through */ | |
6725bdbf | 1354 | |
26e41594 AM |
1355 | case R_386_PLT32: |
1356 | if (h != NULL) | |
1357 | { | |
1358 | if (h->plt.refcount > 0) | |
1359 | h->plt.refcount -= 1; | |
1360 | } | |
1361 | break; | |
dd5724d5 | 1362 | |
26e41594 AM |
1363 | default: |
1364 | break; | |
1365 | } | |
1366 | } | |
252b5132 | 1367 | |
b34976b6 | 1368 | return TRUE; |
252b5132 RH |
1369 | } |
1370 | ||
1371 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1372 | regular object. The current definition is in some section of the | |
1373 | dynamic object, but we're not including those sections. We have to | |
1374 | change the definition to something the rest of the link can | |
1375 | understand. */ | |
1376 | ||
b34976b6 | 1377 | static bfd_boolean |
252b5132 RH |
1378 | elf_i386_adjust_dynamic_symbol (info, h) |
1379 | struct bfd_link_info *info; | |
1380 | struct elf_link_hash_entry *h; | |
1381 | { | |
6725bdbf | 1382 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1383 | asection *s; |
1384 | unsigned int power_of_two; | |
1385 | ||
252b5132 RH |
1386 | /* If this is a function, put it in the procedure linkage table. We |
1387 | will fill in the contents of the procedure linkage table later, | |
1388 | when we know the address of the .got section. */ | |
1389 | if (h->type == STT_FUNC | |
1390 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1391 | { | |
6725bdbf | 1392 | if (h->plt.refcount <= 0 |
9c7a29a3 AM |
1393 | || SYMBOL_CALLS_LOCAL (info, h) |
1394 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1395 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
1396 | { |
1397 | /* This case can occur if we saw a PLT32 reloc in an input | |
dd5724d5 AM |
1398 | file, but the symbol was never referred to by a dynamic |
1399 | object, or if all references were garbage collected. In | |
1400 | such a case, we don't actually need to build a procedure | |
1401 | linkage table, and we can just do a PC32 reloc instead. */ | |
bbd7ec4a | 1402 | h->plt.offset = (bfd_vma) -1; |
dd5724d5 | 1403 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
252b5132 RH |
1404 | } |
1405 | ||
b34976b6 | 1406 | return TRUE; |
252b5132 | 1407 | } |
6725bdbf AM |
1408 | else |
1409 | /* It's possible that we incorrectly decided a .plt reloc was | |
1410 | needed for an R_386_PC32 reloc to a non-function sym in | |
1411 | check_relocs. We can't decide accurately between function and | |
1412 | non-function syms in check-relocs; Objects loaded later in | |
1413 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1414 | h->plt.offset = (bfd_vma) -1; |
252b5132 RH |
1415 | |
1416 | /* If this is a weak symbol, and there is a real definition, the | |
1417 | processor independent code will have arranged for us to see the | |
1418 | real definition first, and we can just use the same value. */ | |
1419 | if (h->weakdef != NULL) | |
1420 | { | |
1421 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1422 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1423 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1424 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
a23b6845 AM |
1425 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
1426 | h->elf_link_hash_flags | |
1427 | = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF) | |
1428 | | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF)); | |
b34976b6 | 1429 | return TRUE; |
252b5132 RH |
1430 | } |
1431 | ||
1432 | /* This is a reference to a symbol defined by a dynamic object which | |
1433 | is not a function. */ | |
1434 | ||
1435 | /* If we are creating a shared library, we must presume that the | |
1436 | only references to the symbol are via the global offset table. | |
1437 | For such cases we need not do anything here; the relocations will | |
1438 | be handled correctly by relocate_section. */ | |
1439 | if (info->shared) | |
b34976b6 | 1440 | return TRUE; |
252b5132 | 1441 | |
7843f00e ILT |
1442 | /* If there are no references to this symbol that do not use the |
1443 | GOT, we don't need to generate a copy reloc. */ | |
1444 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
b34976b6 | 1445 | return TRUE; |
7843f00e | 1446 | |
8bd621d8 AM |
1447 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1448 | if (info->nocopyreloc) | |
1449 | { | |
1450 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
b34976b6 | 1451 | return TRUE; |
8bd621d8 AM |
1452 | } |
1453 | ||
a23b6845 | 1454 | if (ELIMINATE_COPY_RELOCS) |
ebe50bae | 1455 | { |
a23b6845 AM |
1456 | struct elf_i386_link_hash_entry * eh; |
1457 | struct elf_i386_dyn_relocs *p; | |
ebe50bae | 1458 | |
a23b6845 AM |
1459 | eh = (struct elf_i386_link_hash_entry *) h; |
1460 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1461 | { | |
1462 | s = p->sec->output_section; | |
1463 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1464 | break; | |
1465 | } | |
1466 | ||
1467 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1468 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1469 | if (p == NULL) | |
1470 | { | |
1471 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
1472 | return TRUE; | |
1473 | } | |
ebe50bae AM |
1474 | } |
1475 | ||
252b5132 RH |
1476 | /* We must allocate the symbol in our .dynbss section, which will |
1477 | become part of the .bss section of the executable. There will be | |
1478 | an entry for this symbol in the .dynsym section. The dynamic | |
1479 | object will contain position independent code, so all references | |
1480 | from the dynamic object to this symbol will go through the global | |
1481 | offset table. The dynamic linker will use the .dynsym entry to | |
1482 | determine the address it must put in the global offset table, so | |
1483 | both the dynamic object and the regular object will refer to the | |
1484 | same memory location for the variable. */ | |
1485 | ||
0ac8d2ca | 1486 | htab = elf_i386_hash_table (info); |
252b5132 RH |
1487 | |
1488 | /* We must generate a R_386_COPY reloc to tell the dynamic linker to | |
1489 | copy the initial value out of the dynamic object and into the | |
0ac8d2ca | 1490 | runtime process image. */ |
252b5132 RH |
1491 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1492 | { | |
0ac8d2ca | 1493 | htab->srelbss->_raw_size += sizeof (Elf32_External_Rel); |
252b5132 RH |
1494 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
1495 | } | |
1496 | ||
1497 | /* We need to figure out the alignment required for this symbol. I | |
1498 | have no idea how ELF linkers handle this. */ | |
1499 | power_of_two = bfd_log2 (h->size); | |
1500 | if (power_of_two > 3) | |
1501 | power_of_two = 3; | |
1502 | ||
1503 | /* Apply the required alignment. */ | |
0ac8d2ca AM |
1504 | s = htab->sdynbss; |
1505 | s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two)); | |
1506 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
252b5132 | 1507 | { |
0ac8d2ca | 1508 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 1509 | return FALSE; |
252b5132 RH |
1510 | } |
1511 | ||
1512 | /* Define the symbol as being at this point in the section. */ | |
1513 | h->root.u.def.section = s; | |
1514 | h->root.u.def.value = s->_raw_size; | |
1515 | ||
1516 | /* Increment the section size to make room for the symbol. */ | |
1517 | s->_raw_size += h->size; | |
1518 | ||
b34976b6 | 1519 | return TRUE; |
252b5132 RH |
1520 | } |
1521 | ||
6725bdbf AM |
1522 | /* This is the condition under which elf_i386_finish_dynamic_symbol |
1523 | will be called from elflink.h. If elflink.h doesn't call our | |
1524 | finish_dynamic_symbol routine, we'll need to do something about | |
1525 | initializing any .plt and .got entries in elf_i386_relocate_section. */ | |
26e41594 | 1526 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ |
6725bdbf | 1527 | ((DYN) \ |
26e41594 | 1528 | && ((SHARED) \ |
6725bdbf AM |
1529 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ |
1530 | && ((H)->dynindx != -1 \ | |
1531 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
1532 | ||
1533 | /* Allocate space in .plt, .got and associated reloc sections for | |
0c715baa | 1534 | dynamic relocs. */ |
6725bdbf | 1535 | |
b34976b6 | 1536 | static bfd_boolean |
0c715baa | 1537 | allocate_dynrelocs (h, inf) |
6725bdbf AM |
1538 | struct elf_link_hash_entry *h; |
1539 | PTR inf; | |
1540 | { | |
1541 | struct bfd_link_info *info; | |
1542 | struct elf_i386_link_hash_table *htab; | |
5a15f56f | 1543 | struct elf_i386_link_hash_entry *eh; |
0c715baa | 1544 | struct elf_i386_dyn_relocs *p; |
6725bdbf | 1545 | |
e92d460e | 1546 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1547 | return TRUE; |
6725bdbf | 1548 | |
e92d460e AM |
1549 | if (h->root.type == bfd_link_hash_warning) |
1550 | /* When warning symbols are created, they **replace** the "real" | |
1551 | entry in the hash table, thus we never get to see the real | |
1552 | symbol in a hash traversal. So look at it now. */ | |
1553 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1554 | ||
6725bdbf AM |
1555 | info = (struct bfd_link_info *) inf; |
1556 | htab = elf_i386_hash_table (info); | |
1557 | ||
ebe50bae | 1558 | if (htab->elf.dynamic_sections_created |
9c7a29a3 | 1559 | && h->plt.refcount > 0) |
6725bdbf | 1560 | { |
5a15f56f AM |
1561 | /* Make sure this symbol is output as a dynamic symbol. |
1562 | Undefined weak syms won't yet be marked as dynamic. */ | |
1563 | if (h->dynindx == -1 | |
1564 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1565 | { | |
1566 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1567 | return FALSE; |
5a15f56f AM |
1568 | } |
1569 | ||
4e795f50 AM |
1570 | if (info->shared |
1571 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
ced53ee5 | 1572 | { |
0ac8d2ca | 1573 | asection *s = htab->splt; |
6725bdbf | 1574 | |
ced53ee5 AM |
1575 | /* If this is the first .plt entry, make room for the special |
1576 | first entry. */ | |
1577 | if (s->_raw_size == 0) | |
1578 | s->_raw_size += PLT_ENTRY_SIZE; | |
6725bdbf | 1579 | |
ced53ee5 | 1580 | h->plt.offset = s->_raw_size; |
6725bdbf | 1581 | |
ced53ee5 AM |
1582 | /* If this symbol is not defined in a regular file, and we are |
1583 | not generating a shared library, then set the symbol to this | |
1584 | location in the .plt. This is required to make function | |
1585 | pointers compare as equal between the normal executable and | |
1586 | the shared library. */ | |
1587 | if (! info->shared | |
1588 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1589 | { | |
1590 | h->root.u.def.section = s; | |
1591 | h->root.u.def.value = h->plt.offset; | |
1592 | } | |
6725bdbf | 1593 | |
ced53ee5 AM |
1594 | /* Make room for this entry. */ |
1595 | s->_raw_size += PLT_ENTRY_SIZE; | |
6725bdbf | 1596 | |
ced53ee5 AM |
1597 | /* We also need to make an entry in the .got.plt section, which |
1598 | will be placed in the .got section by the linker script. */ | |
0ac8d2ca | 1599 | htab->sgotplt->_raw_size += 4; |
6725bdbf | 1600 | |
6725bdbf | 1601 | /* We also need to make an entry in the .rel.plt section. */ |
0ac8d2ca | 1602 | htab->srelplt->_raw_size += sizeof (Elf32_External_Rel); |
6725bdbf | 1603 | } |
ced53ee5 AM |
1604 | else |
1605 | { | |
51b64d56 | 1606 | h->plt.offset = (bfd_vma) -1; |
ced53ee5 AM |
1607 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
1608 | } | |
6725bdbf AM |
1609 | } |
1610 | else | |
1611 | { | |
51b64d56 | 1612 | h->plt.offset = (bfd_vma) -1; |
6725bdbf AM |
1613 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
1614 | } | |
1615 | ||
37e55690 | 1616 | /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, |
13ae64f3 JJ |
1617 | make it a R_386_TLS_LE_32 requiring no TLS entry. */ |
1618 | if (h->got.refcount > 0 | |
1619 | && !info->shared | |
1620 | && h->dynindx == -1 | |
37e55690 | 1621 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE)) |
cedb70c5 | 1622 | h->got.offset = (bfd_vma) -1; |
13ae64f3 | 1623 | else if (h->got.refcount > 0) |
6725bdbf | 1624 | { |
0ac8d2ca | 1625 | asection *s; |
b34976b6 | 1626 | bfd_boolean dyn; |
13ae64f3 | 1627 | int tls_type = elf_i386_hash_entry(h)->tls_type; |
6725bdbf | 1628 | |
5a15f56f AM |
1629 | /* Make sure this symbol is output as a dynamic symbol. |
1630 | Undefined weak syms won't yet be marked as dynamic. */ | |
1631 | if (h->dynindx == -1 | |
1632 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1633 | { | |
1634 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1635 | return FALSE; |
5a15f56f AM |
1636 | } |
1637 | ||
6725bdbf AM |
1638 | s = htab->sgot; |
1639 | h->got.offset = s->_raw_size; | |
1640 | s->_raw_size += 4; | |
13ae64f3 | 1641 | /* R_386_TLS_GD needs 2 consecutive GOT slots. */ |
37e55690 | 1642 | if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE_BOTH) |
13ae64f3 | 1643 | s->_raw_size += 4; |
ebe50bae | 1644 | dyn = htab->elf.dynamic_sections_created; |
13ae64f3 | 1645 | /* R_386_TLS_IE_32 needs one dynamic relocation, |
37e55690 JJ |
1646 | R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, |
1647 | (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we | |
1648 | need two), R_386_TLS_GD needs one if local symbol and two if | |
1649 | global. */ | |
1650 | if (tls_type == GOT_TLS_IE_BOTH) | |
1651 | htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
1652 | else if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1653 | || (tls_type & GOT_TLS_IE)) | |
13ae64f3 JJ |
1654 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); |
1655 | else if (tls_type == GOT_TLS_GD) | |
1656 | htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
ef5aade5 L |
1657 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1658 | || h->root.type != bfd_link_hash_undefweak) | |
1659 | && (info->shared | |
1660 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
6725bdbf AM |
1661 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); |
1662 | } | |
1663 | else | |
51b64d56 | 1664 | h->got.offset = (bfd_vma) -1; |
6725bdbf | 1665 | |
5a15f56f AM |
1666 | eh = (struct elf_i386_link_hash_entry *) h; |
1667 | if (eh->dyn_relocs == NULL) | |
b34976b6 | 1668 | return TRUE; |
5a15f56f | 1669 | |
0c715baa AM |
1670 | /* In the shared -Bsymbolic case, discard space allocated for |
1671 | dynamic pc-relative relocs against symbols which turn out to be | |
1672 | defined in regular objects. For the normal shared case, discard | |
0ac8d2ca AM |
1673 | space for pc-relative relocs that have become local due to symbol |
1674 | visibility changes. */ | |
0c715baa AM |
1675 | |
1676 | if (info->shared) | |
5a15f56f | 1677 | { |
09695f56 AM |
1678 | /* The only reloc that uses pc_count is R_386_PC32, which will |
1679 | appear on a call or on something like ".long foo - .". We | |
1680 | want calls to protected symbols to resolve directly to the | |
1681 | function rather than going via the plt. If people want | |
1682 | function pointer comparisons to work as expected then they | |
1683 | should avoid writing assembly like ".long foo - .". */ | |
1684 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
5a15f56f | 1685 | { |
0c715baa AM |
1686 | struct elf_i386_dyn_relocs **pp; |
1687 | ||
1688 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1689 | { | |
1690 | p->count -= p->pc_count; | |
1691 | p->pc_count = 0; | |
1692 | if (p->count == 0) | |
1693 | *pp = p->next; | |
1694 | else | |
1695 | pp = &p->next; | |
1696 | } | |
5a15f56f | 1697 | } |
4e795f50 AM |
1698 | |
1699 | /* Also discard relocs on undefined weak syms with non-default | |
1700 | visibility. */ | |
1701 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1702 | && h->root.type == bfd_link_hash_undefweak) | |
1703 | eh->dyn_relocs = NULL; | |
0c715baa | 1704 | } |
a23b6845 | 1705 | else if (ELIMINATE_COPY_RELOCS) |
0c715baa AM |
1706 | { |
1707 | /* For the non-shared case, discard space for relocs against | |
1708 | symbols which turn out to need copy relocs or are not | |
1709 | dynamic. */ | |
1710 | ||
1711 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
1712 | && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1713 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
ebe50bae | 1714 | || (htab->elf.dynamic_sections_created |
0c715baa AM |
1715 | && (h->root.type == bfd_link_hash_undefweak |
1716 | || h->root.type == bfd_link_hash_undefined)))) | |
1717 | { | |
1718 | /* Make sure this symbol is output as a dynamic symbol. | |
1719 | Undefined weak syms won't yet be marked as dynamic. */ | |
1720 | if (h->dynindx == -1 | |
1721 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1722 | { | |
1723 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1724 | return FALSE; |
0c715baa | 1725 | } |
5a15f56f | 1726 | |
0c715baa AM |
1727 | /* If that succeeded, we know we'll be keeping all the |
1728 | relocs. */ | |
1729 | if (h->dynindx != -1) | |
1730 | goto keep; | |
1731 | } | |
1732 | ||
1733 | eh->dyn_relocs = NULL; | |
1734 | ||
ec338859 | 1735 | keep: ; |
5a15f56f AM |
1736 | } |
1737 | ||
0c715baa AM |
1738 | /* Finally, allocate space. */ |
1739 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
12d0ee4a | 1740 | { |
0c715baa AM |
1741 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
1742 | sreloc->_raw_size += p->count * sizeof (Elf32_External_Rel); | |
12d0ee4a AM |
1743 | } |
1744 | ||
b34976b6 | 1745 | return TRUE; |
6725bdbf AM |
1746 | } |
1747 | ||
0c715baa AM |
1748 | /* Find any dynamic relocs that apply to read-only sections. */ |
1749 | ||
b34976b6 | 1750 | static bfd_boolean |
0c715baa AM |
1751 | readonly_dynrelocs (h, inf) |
1752 | struct elf_link_hash_entry *h; | |
1753 | PTR inf; | |
1754 | { | |
1755 | struct elf_i386_link_hash_entry *eh; | |
1756 | struct elf_i386_dyn_relocs *p; | |
1757 | ||
e92d460e AM |
1758 | if (h->root.type == bfd_link_hash_warning) |
1759 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1760 | ||
0c715baa AM |
1761 | eh = (struct elf_i386_link_hash_entry *) h; |
1762 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1763 | { | |
1764 | asection *s = p->sec->output_section; | |
1765 | ||
1766 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1767 | { | |
1768 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
1769 | ||
1770 | info->flags |= DF_TEXTREL; | |
1771 | ||
1772 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 1773 | return FALSE; |
0c715baa AM |
1774 | } |
1775 | } | |
b34976b6 | 1776 | return TRUE; |
0c715baa AM |
1777 | } |
1778 | ||
252b5132 RH |
1779 | /* Set the sizes of the dynamic sections. */ |
1780 | ||
b34976b6 | 1781 | static bfd_boolean |
252b5132 | 1782 | elf_i386_size_dynamic_sections (output_bfd, info) |
db6751f2 | 1783 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1784 | struct bfd_link_info *info; |
1785 | { | |
6725bdbf | 1786 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1787 | bfd *dynobj; |
1788 | asection *s; | |
b34976b6 | 1789 | bfd_boolean relocs; |
0c715baa | 1790 | bfd *ibfd; |
252b5132 | 1791 | |
6725bdbf | 1792 | htab = elf_i386_hash_table (info); |
ebe50bae | 1793 | dynobj = htab->elf.dynobj; |
ffb2e45b AM |
1794 | if (dynobj == NULL) |
1795 | abort (); | |
252b5132 | 1796 | |
ebe50bae | 1797 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
1798 | { |
1799 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 1800 | if (info->executable) |
252b5132 RH |
1801 | { |
1802 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
ffb2e45b AM |
1803 | if (s == NULL) |
1804 | abort (); | |
252b5132 RH |
1805 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
1806 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1807 | } | |
161d71a6 | 1808 | } |
6725bdbf | 1809 | |
0c715baa AM |
1810 | /* Set up .got offsets for local syms, and space for local dynamic |
1811 | relocs. */ | |
1812 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
161d71a6 L |
1813 | { |
1814 | bfd_signed_vma *local_got; | |
1815 | bfd_signed_vma *end_local_got; | |
13ae64f3 | 1816 | char *local_tls_type; |
161d71a6 L |
1817 | bfd_size_type locsymcount; |
1818 | Elf_Internal_Shdr *symtab_hdr; | |
1819 | asection *srel; | |
6725bdbf | 1820 | |
0c715baa | 1821 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
161d71a6 | 1822 | continue; |
6725bdbf | 1823 | |
0c715baa AM |
1824 | for (s = ibfd->sections; s != NULL; s = s->next) |
1825 | { | |
ec338859 | 1826 | struct elf_i386_dyn_relocs *p; |
0c715baa | 1827 | |
ec338859 AM |
1828 | for (p = *((struct elf_i386_dyn_relocs **) |
1829 | &elf_section_data (s)->local_dynrel); | |
1830 | p != NULL; | |
1831 | p = p->next) | |
0c715baa | 1832 | { |
ec338859 AM |
1833 | if (!bfd_is_abs_section (p->sec) |
1834 | && bfd_is_abs_section (p->sec->output_section)) | |
1835 | { | |
1836 | /* Input section has been discarded, either because | |
1837 | it is a copy of a linkonce section or due to | |
1838 | linker script /DISCARD/, so we'll be discarding | |
1839 | the relocs too. */ | |
1840 | } | |
248866a8 | 1841 | else if (p->count != 0) |
ec338859 AM |
1842 | { |
1843 | srel = elf_section_data (p->sec)->sreloc; | |
1844 | srel->_raw_size += p->count * sizeof (Elf32_External_Rel); | |
248866a8 AM |
1845 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1846 | info->flags |= DF_TEXTREL; | |
ec338859 | 1847 | } |
0c715baa AM |
1848 | } |
1849 | } | |
1850 | ||
1851 | local_got = elf_local_got_refcounts (ibfd); | |
161d71a6 L |
1852 | if (!local_got) |
1853 | continue; | |
6725bdbf | 1854 | |
0c715baa | 1855 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
161d71a6 L |
1856 | locsymcount = symtab_hdr->sh_info; |
1857 | end_local_got = local_got + locsymcount; | |
13ae64f3 | 1858 | local_tls_type = elf_i386_local_got_tls_type (ibfd); |
161d71a6 L |
1859 | s = htab->sgot; |
1860 | srel = htab->srelgot; | |
13ae64f3 | 1861 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
161d71a6 L |
1862 | { |
1863 | if (*local_got > 0) | |
6725bdbf | 1864 | { |
161d71a6 L |
1865 | *local_got = s->_raw_size; |
1866 | s->_raw_size += 4; | |
37e55690 JJ |
1867 | if (*local_tls_type == GOT_TLS_GD |
1868 | || *local_tls_type == GOT_TLS_IE_BOTH) | |
13ae64f3 JJ |
1869 | s->_raw_size += 4; |
1870 | if (info->shared | |
1871 | || *local_tls_type == GOT_TLS_GD | |
37e55690 JJ |
1872 | || (*local_tls_type & GOT_TLS_IE)) |
1873 | { | |
1874 | if (*local_tls_type == GOT_TLS_IE_BOTH) | |
1875 | srel->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
1876 | else | |
1877 | srel->_raw_size += sizeof (Elf32_External_Rel); | |
1878 | } | |
6725bdbf | 1879 | } |
161d71a6 L |
1880 | else |
1881 | *local_got = (bfd_vma) -1; | |
6725bdbf | 1882 | } |
252b5132 | 1883 | } |
6725bdbf | 1884 | |
13ae64f3 JJ |
1885 | if (htab->tls_ldm_got.refcount > 0) |
1886 | { | |
1887 | /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM | |
1888 | relocs. */ | |
1889 | htab->tls_ldm_got.offset = htab->sgot->_raw_size; | |
1890 | htab->sgot->_raw_size += 8; | |
1891 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); | |
1892 | } | |
1893 | else | |
1894 | htab->tls_ldm_got.offset = -1; | |
1895 | ||
0c715baa AM |
1896 | /* Allocate global sym .plt and .got entries, and space for global |
1897 | sym dynamic relocs. */ | |
ebe50bae | 1898 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); |
252b5132 | 1899 | |
5a15f56f AM |
1900 | /* We now have determined the sizes of the various dynamic sections. |
1901 | Allocate memory for them. */ | |
b34976b6 | 1902 | relocs = FALSE; |
252b5132 RH |
1903 | for (s = dynobj->sections; s != NULL; s = s->next) |
1904 | { | |
252b5132 RH |
1905 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
1906 | continue; | |
1907 | ||
6725bdbf AM |
1908 | if (s == htab->splt |
1909 | || s == htab->sgot | |
1910 | || s == htab->sgotplt) | |
252b5132 | 1911 | { |
6725bdbf AM |
1912 | /* Strip this section if we don't need it; see the |
1913 | comment below. */ | |
252b5132 | 1914 | } |
6725bdbf | 1915 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rel", 4) == 0) |
252b5132 | 1916 | { |
0ac8d2ca | 1917 | if (s->_raw_size != 0 && s != htab->srelplt) |
b34976b6 | 1918 | relocs = TRUE; |
252b5132 | 1919 | |
0ac8d2ca AM |
1920 | /* We use the reloc_count field as a counter if we need |
1921 | to copy relocs into the output file. */ | |
1922 | s->reloc_count = 0; | |
252b5132 | 1923 | } |
6725bdbf | 1924 | else |
252b5132 RH |
1925 | { |
1926 | /* It's not one of our sections, so don't allocate space. */ | |
1927 | continue; | |
1928 | } | |
1929 | ||
6725bdbf | 1930 | if (s->_raw_size == 0) |
252b5132 | 1931 | { |
0ac8d2ca AM |
1932 | /* If we don't need this section, strip it from the |
1933 | output file. This is mostly to handle .rel.bss and | |
1934 | .rel.plt. We must create both sections in | |
1935 | create_dynamic_sections, because they must be created | |
1936 | before the linker maps input sections to output | |
1937 | sections. The linker does that before | |
1938 | adjust_dynamic_symbol is called, and it is that | |
1939 | function which decides whether anything needs to go | |
1940 | into these sections. */ | |
1941 | ||
7f8d5fc9 | 1942 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
1943 | continue; |
1944 | } | |
1945 | ||
f69da49f AM |
1946 | /* Allocate memory for the section contents. We use bfd_zalloc |
1947 | here in case unused entries are not reclaimed before the | |
1948 | section's contents are written out. This should not happen, | |
1949 | but this way if it does, we get a R_386_NONE reloc instead | |
1950 | of garbage. */ | |
7a9af8c4 | 1951 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
6725bdbf | 1952 | if (s->contents == NULL) |
b34976b6 | 1953 | return FALSE; |
252b5132 RH |
1954 | } |
1955 | ||
ebe50bae | 1956 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
1957 | { |
1958 | /* Add some entries to the .dynamic section. We fill in the | |
1959 | values later, in elf_i386_finish_dynamic_sections, but we | |
1960 | must add the entries now so that we get the correct size for | |
1961 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1962 | dynamic linker and used by the debugger. */ | |
dc810e39 AM |
1963 | #define add_dynamic_entry(TAG, VAL) \ |
1964 | bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
1965 | ||
36af4a4e | 1966 | if (info->executable) |
252b5132 | 1967 | { |
dc810e39 | 1968 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1969 | return FALSE; |
252b5132 RH |
1970 | } |
1971 | ||
6725bdbf | 1972 | if (htab->splt->_raw_size != 0) |
252b5132 | 1973 | { |
dc810e39 AM |
1974 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1975 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1976 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
1977 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1978 | return FALSE; |
252b5132 RH |
1979 | } |
1980 | ||
1981 | if (relocs) | |
1982 | { | |
dc810e39 AM |
1983 | if (!add_dynamic_entry (DT_REL, 0) |
1984 | || !add_dynamic_entry (DT_RELSZ, 0) | |
1985 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 1986 | return FALSE; |
252b5132 | 1987 | |
0c715baa AM |
1988 | /* If any dynamic relocs apply to a read-only section, |
1989 | then we need a DT_TEXTREL entry. */ | |
248866a8 AM |
1990 | if ((info->flags & DF_TEXTREL) == 0) |
1991 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
1992 | (PTR) info); | |
0c715baa AM |
1993 | |
1994 | if ((info->flags & DF_TEXTREL) != 0) | |
1995 | { | |
1996 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1997 | return FALSE; |
0c715baa | 1998 | } |
252b5132 RH |
1999 | } |
2000 | } | |
dc810e39 | 2001 | #undef add_dynamic_entry |
252b5132 | 2002 | |
b34976b6 | 2003 | return TRUE; |
252b5132 RH |
2004 | } |
2005 | ||
38701953 AM |
2006 | /* Set the correct type for an x86 ELF section. We do this by the |
2007 | section name, which is a hack, but ought to work. */ | |
2008 | ||
b34976b6 | 2009 | static bfd_boolean |
38701953 AM |
2010 | elf_i386_fake_sections (abfd, hdr, sec) |
2011 | bfd *abfd ATTRIBUTE_UNUSED; | |
947216bf | 2012 | Elf_Internal_Shdr *hdr; |
38701953 AM |
2013 | asection *sec; |
2014 | { | |
2015 | register const char *name; | |
2016 | ||
2017 | name = bfd_get_section_name (abfd, sec); | |
2018 | ||
2019 | /* This is an ugly, but unfortunately necessary hack that is | |
2020 | needed when producing EFI binaries on x86. It tells | |
2021 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
2022 | containing ELF relocation info. We need this hack in order to | |
2023 | be able to generate ELF binaries that can be translated into | |
2024 | EFI applications (which are essentially COFF objects). Those | |
2025 | files contain a COFF ".reloc" section inside an ELFNN object, | |
2026 | which would normally cause BFD to segfault because it would | |
2027 | attempt to interpret this section as containing relocation | |
2028 | entries for section "oc". With this hack enabled, ".reloc" | |
2029 | will be treated as a normal data section, which will avoid the | |
2030 | segfault. However, you won't be able to create an ELFNN binary | |
2031 | with a section named "oc" that needs relocations, but that's | |
2032 | the kind of ugly side-effects you get when detecting section | |
2033 | types based on their names... In practice, this limitation is | |
2034 | unlikely to bite. */ | |
2035 | if (strcmp (name, ".reloc") == 0) | |
2036 | hdr->sh_type = SHT_PROGBITS; | |
2037 | ||
b34976b6 | 2038 | return TRUE; |
38701953 AM |
2039 | } |
2040 | ||
13ae64f3 JJ |
2041 | /* Return the base VMA address which should be subtracted from real addresses |
2042 | when resolving @dtpoff relocation. | |
2043 | This is PT_TLS segment p_vaddr. */ | |
2044 | ||
2045 | static bfd_vma | |
2046 | dtpoff_base (info) | |
2047 | struct bfd_link_info *info; | |
2048 | { | |
6a30718d JJ |
2049 | /* If tls_segment is NULL, we should have signalled an error already. */ |
2050 | if (elf_hash_table (info)->tls_segment == NULL) | |
2051 | return 0; | |
13ae64f3 JJ |
2052 | return elf_hash_table (info)->tls_segment->start; |
2053 | } | |
2054 | ||
2055 | /* Return the relocation value for @tpoff relocation | |
2056 | if STT_TLS virtual address is ADDRESS. */ | |
2057 | ||
2058 | static bfd_vma | |
2059 | tpoff (info, address) | |
2060 | struct bfd_link_info *info; | |
2061 | bfd_vma address; | |
2062 | { | |
2063 | struct elf_link_tls_segment *tls_segment | |
2064 | = elf_hash_table (info)->tls_segment; | |
2065 | ||
6a30718d JJ |
2066 | /* If tls_segment is NULL, we should have signalled an error already. */ |
2067 | if (tls_segment == NULL) | |
2068 | return 0; | |
13ae64f3 JJ |
2069 | return (align_power (tls_segment->size, tls_segment->align) |
2070 | + tls_segment->start - address); | |
2071 | } | |
2072 | ||
252b5132 RH |
2073 | /* Relocate an i386 ELF section. */ |
2074 | ||
b34976b6 | 2075 | static bfd_boolean |
252b5132 RH |
2076 | elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, |
2077 | contents, relocs, local_syms, local_sections) | |
2078 | bfd *output_bfd; | |
2079 | struct bfd_link_info *info; | |
2080 | bfd *input_bfd; | |
2081 | asection *input_section; | |
2082 | bfd_byte *contents; | |
2083 | Elf_Internal_Rela *relocs; | |
2084 | Elf_Internal_Sym *local_syms; | |
2085 | asection **local_sections; | |
2086 | { | |
6725bdbf | 2087 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2088 | Elf_Internal_Shdr *symtab_hdr; |
2089 | struct elf_link_hash_entry **sym_hashes; | |
2090 | bfd_vma *local_got_offsets; | |
252b5132 RH |
2091 | Elf_Internal_Rela *rel; |
2092 | Elf_Internal_Rela *relend; | |
2093 | ||
6725bdbf | 2094 | htab = elf_i386_hash_table (info); |
252b5132 RH |
2095 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
2096 | sym_hashes = elf_sym_hashes (input_bfd); | |
2097 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2098 | ||
252b5132 RH |
2099 | rel = relocs; |
2100 | relend = relocs + input_section->reloc_count; | |
2101 | for (; rel < relend; rel++) | |
2102 | { | |
13ae64f3 | 2103 | unsigned int r_type; |
252b5132 RH |
2104 | reloc_howto_type *howto; |
2105 | unsigned long r_symndx; | |
2106 | struct elf_link_hash_entry *h; | |
2107 | Elf_Internal_Sym *sym; | |
2108 | asection *sec; | |
ffb2e45b | 2109 | bfd_vma off; |
252b5132 | 2110 | bfd_vma relocation; |
b34976b6 | 2111 | bfd_boolean unresolved_reloc; |
252b5132 | 2112 | bfd_reloc_status_type r; |
1b452ec6 | 2113 | unsigned int indx; |
13ae64f3 | 2114 | int tls_type; |
252b5132 RH |
2115 | |
2116 | r_type = ELF32_R_TYPE (rel->r_info); | |
dc47f327 AM |
2117 | if (r_type == (int) R_386_GNU_VTINHERIT |
2118 | || r_type == (int) R_386_GNU_VTENTRY) | |
252b5132 | 2119 | continue; |
dc47f327 | 2120 | |
1b452ec6 | 2121 | if ((indx = (unsigned) r_type) >= R_386_standard |
13ae64f3 JJ |
2122 | && ((indx = r_type - R_386_ext_offset) - R_386_standard |
2123 | >= R_386_ext - R_386_standard) | |
2124 | && ((indx = r_type - R_386_tls_offset) - R_386_ext | |
2125 | >= R_386_tls - R_386_ext)) | |
252b5132 RH |
2126 | { |
2127 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2128 | return FALSE; |
252b5132 | 2129 | } |
1b452ec6 | 2130 | howto = elf_howto_table + indx; |
252b5132 RH |
2131 | |
2132 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2133 | ||
2134 | if (info->relocateable) | |
2135 | { | |
4a335f3d | 2136 | bfd_vma val; |
4a335f3d AM |
2137 | bfd_byte *where; |
2138 | ||
0ac8d2ca | 2139 | /* This is a relocatable link. We don't have to change |
252b5132 RH |
2140 | anything, unless the reloc is against a section symbol, |
2141 | in which case we have to adjust according to where the | |
2142 | section symbol winds up in the output section. */ | |
4a335f3d AM |
2143 | if (r_symndx >= symtab_hdr->sh_info) |
2144 | continue; | |
2145 | ||
2146 | sym = local_syms + r_symndx; | |
2147 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
2148 | continue; | |
2149 | ||
2150 | sec = local_sections[r_symndx]; | |
2151 | val = sec->output_offset; | |
2152 | if (val == 0) | |
2153 | continue; | |
2154 | ||
2155 | where = contents + rel->r_offset; | |
2156 | switch (howto->size) | |
252b5132 | 2157 | { |
16a10388 | 2158 | /* FIXME: overflow checks. */ |
4a335f3d | 2159 | case 0: |
16a10388 | 2160 | val += bfd_get_8 (input_bfd, where); |
4a335f3d | 2161 | bfd_put_8 (input_bfd, val, where); |
4a335f3d AM |
2162 | break; |
2163 | case 1: | |
16a10388 | 2164 | val += bfd_get_16 (input_bfd, where); |
4a335f3d | 2165 | bfd_put_16 (input_bfd, val, where); |
4a335f3d AM |
2166 | break; |
2167 | case 2: | |
2168 | val += bfd_get_32 (input_bfd, where); | |
2169 | bfd_put_32 (input_bfd, val, where); | |
2170 | break; | |
2171 | default: | |
2172 | abort (); | |
252b5132 | 2173 | } |
252b5132 RH |
2174 | continue; |
2175 | } | |
2176 | ||
2177 | /* This is a final link. */ | |
2178 | h = NULL; | |
2179 | sym = NULL; | |
2180 | sec = NULL; | |
b34976b6 | 2181 | unresolved_reloc = FALSE; |
252b5132 RH |
2182 | if (r_symndx < symtab_hdr->sh_info) |
2183 | { | |
2184 | sym = local_syms + r_symndx; | |
2185 | sec = local_sections[r_symndx]; | |
2186 | relocation = (sec->output_section->vma | |
2187 | + sec->output_offset | |
2188 | + sym->st_value); | |
f8df10f4 JJ |
2189 | if ((sec->flags & SEC_MERGE) |
2190 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
2191 | { | |
2192 | asection *msec; | |
2193 | bfd_vma addend; | |
4a335f3d | 2194 | bfd_byte *where = contents + rel->r_offset; |
f8df10f4 | 2195 | |
4a335f3d | 2196 | switch (howto->size) |
f8df10f4 | 2197 | { |
4a335f3d AM |
2198 | case 0: |
2199 | addend = bfd_get_8 (input_bfd, where); | |
2200 | if (howto->pc_relative) | |
2201 | { | |
2202 | addend = (addend ^ 0x80) - 0x80; | |
2203 | addend += 1; | |
2204 | } | |
2205 | break; | |
2206 | case 1: | |
2207 | addend = bfd_get_16 (input_bfd, where); | |
2208 | if (howto->pc_relative) | |
2209 | { | |
2210 | addend = (addend ^ 0x8000) - 0x8000; | |
2211 | addend += 2; | |
2212 | } | |
2213 | break; | |
2214 | case 2: | |
2215 | addend = bfd_get_32 (input_bfd, where); | |
2216 | if (howto->pc_relative) | |
2217 | { | |
2218 | addend = (addend ^ 0x80000000) - 0x80000000; | |
2219 | addend += 4; | |
2220 | } | |
2221 | break; | |
2222 | default: | |
2223 | abort (); | |
f8df10f4 JJ |
2224 | } |
2225 | ||
f8df10f4 | 2226 | msec = sec; |
4a335f3d AM |
2227 | addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); |
2228 | addend -= relocation; | |
f8df10f4 | 2229 | addend += msec->output_section->vma + msec->output_offset; |
4a335f3d AM |
2230 | |
2231 | switch (howto->size) | |
2232 | { | |
2233 | case 0: | |
16a10388 | 2234 | /* FIXME: overflow checks. */ |
4a335f3d AM |
2235 | if (howto->pc_relative) |
2236 | addend -= 1; | |
2237 | bfd_put_8 (input_bfd, addend, where); | |
4a335f3d AM |
2238 | break; |
2239 | case 1: | |
2240 | if (howto->pc_relative) | |
2241 | addend -= 2; | |
2242 | bfd_put_16 (input_bfd, addend, where); | |
4a335f3d AM |
2243 | break; |
2244 | case 2: | |
2245 | if (howto->pc_relative) | |
2246 | addend -= 4; | |
2247 | bfd_put_32 (input_bfd, addend, where); | |
2248 | break; | |
2249 | } | |
f8df10f4 | 2250 | } |
252b5132 RH |
2251 | } |
2252 | else | |
2253 | { | |
2254 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2255 | while (h->root.type == bfd_link_hash_indirect | |
2256 | || h->root.type == bfd_link_hash_warning) | |
2257 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
ffb2e45b | 2258 | |
6725bdbf | 2259 | relocation = 0; |
252b5132 RH |
2260 | if (h->root.type == bfd_link_hash_defined |
2261 | || h->root.type == bfd_link_hash_defweak) | |
2262 | { | |
2263 | sec = h->root.u.def.section; | |
83be169b AM |
2264 | if (sec->output_section == NULL) |
2265 | /* Set a flag that will be cleared later if we find a | |
2266 | relocation value for this symbol. output_section | |
2267 | is typically NULL for symbols satisfied by a shared | |
2268 | library. */ | |
b34976b6 | 2269 | unresolved_reloc = TRUE; |
252b5132 RH |
2270 | else |
2271 | relocation = (h->root.u.def.value | |
2272 | + sec->output_section->vma | |
2273 | + sec->output_offset); | |
2274 | } | |
2275 | else if (h->root.type == bfd_link_hash_undefweak) | |
6725bdbf | 2276 | ; |
671bae9c | 2277 | else if (info->shared |
3a27a730 L |
2278 | && !info->no_undefined |
2279 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
6725bdbf | 2280 | ; |
252b5132 RH |
2281 | else |
2282 | { | |
2283 | if (! ((*info->callbacks->undefined_symbol) | |
2284 | (info, h->root.root.string, input_bfd, | |
5cc7c785 | 2285 | input_section, rel->r_offset, |
3a27a730 L |
2286 | (!info->shared || info->no_undefined |
2287 | || ELF_ST_VISIBILITY (h->other))))) | |
b34976b6 | 2288 | return FALSE; |
252b5132 RH |
2289 | } |
2290 | } | |
2291 | ||
2292 | switch (r_type) | |
2293 | { | |
2294 | case R_386_GOT32: | |
2295 | /* Relocation is to the entry for this symbol in the global | |
2296 | offset table. */ | |
ffb2e45b AM |
2297 | if (htab->sgot == NULL) |
2298 | abort (); | |
252b5132 RH |
2299 | |
2300 | if (h != NULL) | |
2301 | { | |
b34976b6 | 2302 | bfd_boolean dyn; |
252b5132 RH |
2303 | |
2304 | off = h->got.offset; | |
ebe50bae | 2305 | dyn = htab->elf.dynamic_sections_created; |
26e41594 | 2306 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
252b5132 | 2307 | || (info->shared |
586119b3 | 2308 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
ef5aade5 L |
2309 | || (ELF_ST_VISIBILITY (h->other) |
2310 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
2311 | { |
2312 | /* This is actually a static link, or it is a | |
2313 | -Bsymbolic link and the symbol is defined | |
2314 | locally, or the symbol was forced to be local | |
2315 | because of a version file. We must initialize | |
2316 | this entry in the global offset table. Since the | |
2317 | offset must always be a multiple of 4, we use the | |
2318 | least significant bit to record whether we have | |
2319 | initialized it already. | |
2320 | ||
2321 | When doing a dynamic link, we create a .rel.got | |
2322 | relocation entry to initialize the value. This | |
2323 | is done in the finish_dynamic_symbol routine. */ | |
2324 | if ((off & 1) != 0) | |
2325 | off &= ~1; | |
2326 | else | |
2327 | { | |
2328 | bfd_put_32 (output_bfd, relocation, | |
6725bdbf | 2329 | htab->sgot->contents + off); |
252b5132 RH |
2330 | h->got.offset |= 1; |
2331 | } | |
2332 | } | |
8c694914 | 2333 | else |
b34976b6 | 2334 | unresolved_reloc = FALSE; |
252b5132 RH |
2335 | } |
2336 | else | |
2337 | { | |
ffb2e45b AM |
2338 | if (local_got_offsets == NULL) |
2339 | abort (); | |
252b5132 RH |
2340 | |
2341 | off = local_got_offsets[r_symndx]; | |
2342 | ||
2343 | /* The offset must always be a multiple of 4. We use | |
83be169b AM |
2344 | the least significant bit to record whether we have |
2345 | already generated the necessary reloc. */ | |
252b5132 RH |
2346 | if ((off & 1) != 0) |
2347 | off &= ~1; | |
2348 | else | |
2349 | { | |
6725bdbf AM |
2350 | bfd_put_32 (output_bfd, relocation, |
2351 | htab->sgot->contents + off); | |
252b5132 RH |
2352 | |
2353 | if (info->shared) | |
2354 | { | |
947216bf AM |
2355 | asection *s; |
2356 | Elf_Internal_Rela outrel; | |
2357 | bfd_byte *loc; | |
252b5132 | 2358 | |
947216bf AM |
2359 | s = htab->srelgot; |
2360 | if (s == NULL) | |
ffb2e45b | 2361 | abort (); |
252b5132 | 2362 | |
6725bdbf AM |
2363 | outrel.r_offset = (htab->sgot->output_section->vma |
2364 | + htab->sgot->output_offset | |
252b5132 RH |
2365 | + off); |
2366 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
947216bf AM |
2367 | loc = s->contents; |
2368 | loc += s->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 2369 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2370 | } |
2371 | ||
2372 | local_got_offsets[r_symndx] |= 1; | |
2373 | } | |
252b5132 RH |
2374 | } |
2375 | ||
ffb2e45b AM |
2376 | if (off >= (bfd_vma) -2) |
2377 | abort (); | |
2378 | ||
2379 | relocation = htab->sgot->output_offset + off; | |
252b5132 RH |
2380 | break; |
2381 | ||
2382 | case R_386_GOTOFF: | |
2383 | /* Relocation is relative to the start of the global offset | |
2384 | table. */ | |
2385 | ||
252b5132 RH |
2386 | /* Note that sgot->output_offset is not involved in this |
2387 | calculation. We always want the start of .got. If we | |
2388 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2389 | permitted by the ABI, we might have to change this | |
2390 | calculation. */ | |
6725bdbf | 2391 | relocation -= htab->sgot->output_section->vma; |
252b5132 RH |
2392 | break; |
2393 | ||
2394 | case R_386_GOTPC: | |
2395 | /* Use global offset table as symbol value. */ | |
6725bdbf | 2396 | relocation = htab->sgot->output_section->vma; |
b34976b6 | 2397 | unresolved_reloc = FALSE; |
252b5132 RH |
2398 | break; |
2399 | ||
2400 | case R_386_PLT32: | |
2401 | /* Relocation is to the entry for this symbol in the | |
2402 | procedure linkage table. */ | |
2403 | ||
dd5724d5 | 2404 | /* Resolve a PLT32 reloc against a local symbol directly, |
83be169b | 2405 | without using the procedure linkage table. */ |
252b5132 RH |
2406 | if (h == NULL) |
2407 | break; | |
2408 | ||
dd5724d5 | 2409 | if (h->plt.offset == (bfd_vma) -1 |
6725bdbf | 2410 | || htab->splt == NULL) |
252b5132 RH |
2411 | { |
2412 | /* We didn't make a PLT entry for this symbol. This | |
83be169b AM |
2413 | happens when statically linking PIC code, or when |
2414 | using -Bsymbolic. */ | |
252b5132 RH |
2415 | break; |
2416 | } | |
2417 | ||
6725bdbf AM |
2418 | relocation = (htab->splt->output_section->vma |
2419 | + htab->splt->output_offset | |
252b5132 | 2420 | + h->plt.offset); |
b34976b6 | 2421 | unresolved_reloc = FALSE; |
252b5132 RH |
2422 | break; |
2423 | ||
2424 | case R_386_32: | |
2425 | case R_386_PC32: | |
ec338859 AM |
2426 | /* r_symndx will be zero only for relocs against symbols |
2427 | from removed linkonce sections, or sections discarded by | |
2428 | a linker script. */ | |
2429 | if (r_symndx == 0 | |
2430 | || (input_section->flags & SEC_ALLOC) == 0) | |
2431 | break; | |
2432 | ||
12d0ee4a | 2433 | if ((info->shared |
ef5aade5 L |
2434 | && (h == NULL |
2435 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2436 | || h->root.type != bfd_link_hash_undefweak) | |
12d0ee4a AM |
2437 | && (r_type != R_386_PC32 |
2438 | || (h != NULL | |
09695f56 | 2439 | && !SYMBOL_CALLS_LOCAL (info, h)))) |
a23b6845 AM |
2440 | || (ELIMINATE_COPY_RELOCS |
2441 | && !info->shared | |
12d0ee4a AM |
2442 | && h != NULL |
2443 | && h->dynindx != -1 | |
2444 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
56882138 AM |
2445 | && (((h->elf_link_hash_flags |
2446 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
2447 | && (h->elf_link_hash_flags | |
2448 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
28d0b90e AM |
2449 | || h->root.type == bfd_link_hash_undefweak |
2450 | || h->root.type == bfd_link_hash_undefined))) | |
252b5132 | 2451 | { |
947216bf AM |
2452 | Elf_Internal_Rela outrel; |
2453 | bfd_byte *loc; | |
b34976b6 | 2454 | bfd_boolean skip, relocate; |
0c715baa | 2455 | asection *sreloc; |
252b5132 RH |
2456 | |
2457 | /* When generating a shared object, these relocations | |
2458 | are copied into the output file to be resolved at run | |
2459 | time. */ | |
2460 | ||
b34976b6 AM |
2461 | skip = FALSE; |
2462 | relocate = FALSE; | |
252b5132 | 2463 | |
c629eae0 JJ |
2464 | outrel.r_offset = |
2465 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2466 | rel->r_offset); | |
2467 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2468 | skip = TRUE; |
0bb2d96a | 2469 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2470 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
2471 | outrel.r_offset += (input_section->output_section->vma |
2472 | + input_section->output_offset); | |
2473 | ||
2474 | if (skip) | |
0bb2d96a | 2475 | memset (&outrel, 0, sizeof outrel); |
5a15f56f AM |
2476 | else if (h != NULL |
2477 | && h->dynindx != -1 | |
2478 | && (r_type == R_386_PC32 | |
2479 | || !info->shared | |
2480 | || !info->symbolic | |
2481 | || (h->elf_link_hash_flags | |
2482 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
0bb2d96a | 2483 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
2484 | else |
2485 | { | |
5a15f56f | 2486 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 2487 | relocate = TRUE; |
5a15f56f | 2488 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
252b5132 RH |
2489 | } |
2490 | ||
0c715baa AM |
2491 | sreloc = elf_section_data (input_section)->sreloc; |
2492 | if (sreloc == NULL) | |
2493 | abort (); | |
2494 | ||
947216bf AM |
2495 | loc = sreloc->contents; |
2496 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
0c715baa | 2497 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2498 | |
2499 | /* If this reloc is against an external symbol, we do | |
2500 | not want to fiddle with the addend. Otherwise, we | |
2501 | need to include the symbol value so that it becomes | |
2502 | an addend for the dynamic reloc. */ | |
2503 | if (! relocate) | |
2504 | continue; | |
2505 | } | |
252b5132 RH |
2506 | break; |
2507 | ||
37e55690 JJ |
2508 | case R_386_TLS_IE: |
2509 | if (info->shared) | |
2510 | { | |
947216bf AM |
2511 | Elf_Internal_Rela outrel; |
2512 | bfd_byte *loc; | |
37e55690 | 2513 | asection *sreloc; |
37e55690 JJ |
2514 | |
2515 | outrel.r_offset = rel->r_offset | |
2516 | + input_section->output_section->vma | |
2517 | + input_section->output_offset; | |
2518 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
2519 | sreloc = elf_section_data (input_section)->sreloc; | |
2520 | if (sreloc == NULL) | |
2521 | abort (); | |
947216bf AM |
2522 | loc = sreloc->contents; |
2523 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
2524 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2525 | } | |
2526 | /* Fall through */ | |
2527 | ||
13ae64f3 JJ |
2528 | case R_386_TLS_GD: |
2529 | case R_386_TLS_IE_32: | |
37e55690 | 2530 | case R_386_TLS_GOTIE: |
13ae64f3 JJ |
2531 | r_type = elf_i386_tls_transition (info, r_type, h == NULL); |
2532 | tls_type = GOT_UNKNOWN; | |
2533 | if (h == NULL && local_got_offsets) | |
2534 | tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx]; | |
2535 | else if (h != NULL) | |
2536 | { | |
2537 | tls_type = elf_i386_hash_entry(h)->tls_type; | |
37e55690 | 2538 | if (!info->shared && h->dynindx == -1 && (tls_type & GOT_TLS_IE)) |
13ae64f3 JJ |
2539 | r_type = R_386_TLS_LE_32; |
2540 | } | |
37e55690 JJ |
2541 | if (tls_type == GOT_TLS_IE) |
2542 | tls_type = GOT_TLS_IE_NEG; | |
2543 | if (r_type == R_386_TLS_GD) | |
2544 | { | |
2545 | if (tls_type == GOT_TLS_IE_POS) | |
2546 | r_type = R_386_TLS_GOTIE; | |
2547 | else if (tls_type & GOT_TLS_IE) | |
2548 | r_type = R_386_TLS_IE_32; | |
2549 | } | |
13ae64f3 JJ |
2550 | |
2551 | if (r_type == R_386_TLS_LE_32) | |
2552 | { | |
82e51918 | 2553 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
2554 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
2555 | { | |
2556 | unsigned int val, type; | |
2557 | bfd_vma roff; | |
2558 | ||
2559 | /* GD->LE transition. */ | |
2560 | BFD_ASSERT (rel->r_offset >= 2); | |
2561 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2562 | BFD_ASSERT (type == 0x8d || type == 0x04); | |
2563 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2564 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2565 | contents + rel->r_offset + 4) | |
2566 | == 0xe8); | |
2567 | BFD_ASSERT (rel + 1 < relend); | |
2568 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2569 | roff = rel->r_offset + 5; | |
2570 | val = bfd_get_8 (input_bfd, | |
2571 | contents + rel->r_offset - 1); | |
2572 | if (type == 0x04) | |
2573 | { | |
2574 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
2575 | Change it into: | |
2576 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2577 | (6 byte form of subl). */ | |
2578 | BFD_ASSERT (rel->r_offset >= 3); | |
2579 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2580 | contents + rel->r_offset - 3) | |
2581 | == 0x8d); | |
2582 | BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3)); | |
2583 | memcpy (contents + rel->r_offset - 3, | |
2584 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
2585 | } | |
2586 | else | |
2587 | { | |
2588 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2589 | if (rel->r_offset + 10 <= input_section->_raw_size | |
2590 | && bfd_get_8 (input_bfd, | |
2591 | contents + rel->r_offset + 9) == 0x90) | |
2592 | { | |
2593 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
2594 | Change it into: | |
2595 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2596 | (6 byte form of subl). */ | |
2597 | memcpy (contents + rel->r_offset - 2, | |
2598 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
2599 | roff = rel->r_offset + 6; | |
2600 | } | |
2601 | else | |
2602 | { | |
2603 | /* leal foo(%reg), %eax; call ___tls_get_addr | |
2604 | Change it into: | |
2605 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2606 | (5 byte form of subl). */ | |
2607 | memcpy (contents + rel->r_offset - 2, | |
2608 | "\x65\xa1\0\0\0\0\x2d\0\0\0", 11); | |
2609 | } | |
2610 | } | |
2611 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
2612 | contents + roff); | |
2613 | /* Skip R_386_PLT32. */ | |
2614 | rel++; | |
2615 | continue; | |
2616 | } | |
37e55690 | 2617 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE) |
13ae64f3 JJ |
2618 | { |
2619 | unsigned int val, type; | |
2620 | ||
2621 | /* IE->LE transition: | |
37e55690 JJ |
2622 | Originally it can be one of: |
2623 | movl foo, %eax | |
2624 | movl foo, %reg | |
2625 | addl foo, %reg | |
2626 | We change it into: | |
2627 | movl $foo, %eax | |
2628 | movl $foo, %reg | |
2629 | addl $foo, %reg. */ | |
2630 | BFD_ASSERT (rel->r_offset >= 1); | |
2631 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2632 | BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size); | |
37e55690 JJ |
2633 | if (val == 0xa1) |
2634 | { | |
2635 | /* movl foo, %eax. */ | |
7c445aa3 | 2636 | bfd_put_8 (output_bfd, 0xb8, contents + rel->r_offset - 1); |
37e55690 | 2637 | } |
299bf759 | 2638 | else |
37e55690 | 2639 | { |
299bf759 L |
2640 | BFD_ASSERT (rel->r_offset >= 2); |
2641 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2642 | switch (type) | |
26e41594 | 2643 | { |
299bf759 L |
2644 | case 0x8b: |
2645 | /* movl */ | |
2646 | BFD_ASSERT ((val & 0xc7) == 0x05); | |
2647 | bfd_put_8 (output_bfd, 0xc7, | |
2648 | contents + rel->r_offset - 2); | |
2649 | bfd_put_8 (output_bfd, | |
2650 | 0xc0 | ((val >> 3) & 7), | |
2651 | contents + rel->r_offset - 1); | |
2652 | break; | |
2653 | case 0x03: | |
2654 | /* addl */ | |
2655 | BFD_ASSERT ((val & 0xc7) == 0x05); | |
2656 | bfd_put_8 (output_bfd, 0x81, | |
2657 | contents + rel->r_offset - 2); | |
2658 | bfd_put_8 (output_bfd, | |
2659 | 0xc0 | ((val >> 3) & 7), | |
2660 | contents + rel->r_offset - 1); | |
2661 | break; | |
2662 | default: | |
2663 | BFD_FAIL (); | |
2664 | break; | |
26e41594 | 2665 | } |
37e55690 | 2666 | } |
37e55690 JJ |
2667 | bfd_put_32 (output_bfd, -tpoff (info, relocation), |
2668 | contents + rel->r_offset); | |
2669 | continue; | |
2670 | } | |
2671 | else | |
2672 | { | |
2673 | unsigned int val, type; | |
2674 | ||
2675 | /* {IE_32,GOTIE}->LE transition: | |
2676 | Originally it can be one of: | |
13ae64f3 | 2677 | subl foo(%reg1), %reg2 |
13ae64f3 | 2678 | movl foo(%reg1), %reg2 |
37e55690 | 2679 | addl foo(%reg1), %reg2 |
13ae64f3 JJ |
2680 | We change it into: |
2681 | subl $foo, %reg2 | |
37e55690 JJ |
2682 | movl $foo, %reg2 (6 byte form) |
2683 | addl $foo, %reg2. */ | |
13ae64f3 JJ |
2684 | BFD_ASSERT (rel->r_offset >= 2); |
2685 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2686 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2687 | BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size); | |
37e55690 | 2688 | BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4); |
13ae64f3 JJ |
2689 | if (type == 0x8b) |
2690 | { | |
2691 | /* movl */ | |
13ae64f3 JJ |
2692 | bfd_put_8 (output_bfd, 0xc7, |
2693 | contents + rel->r_offset - 2); | |
2694 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
2695 | contents + rel->r_offset - 1); | |
2696 | } | |
2697 | else if (type == 0x2b) | |
2698 | { | |
2699 | /* subl */ | |
13ae64f3 JJ |
2700 | bfd_put_8 (output_bfd, 0x81, |
2701 | contents + rel->r_offset - 2); | |
2702 | bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), | |
2703 | contents + rel->r_offset - 1); | |
2704 | } | |
37e55690 JJ |
2705 | else if (type == 0x03) |
2706 | { | |
2707 | /* addl */ | |
2708 | bfd_put_8 (output_bfd, 0x81, | |
2709 | contents + rel->r_offset - 2); | |
2710 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
2711 | contents + rel->r_offset - 1); | |
2712 | } | |
13ae64f3 JJ |
2713 | else |
2714 | BFD_FAIL (); | |
37e55690 JJ |
2715 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE) |
2716 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
2717 | contents + rel->r_offset); | |
2718 | else | |
2719 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
2720 | contents + rel->r_offset); | |
13ae64f3 JJ |
2721 | continue; |
2722 | } | |
2723 | } | |
2724 | ||
2725 | if (htab->sgot == NULL) | |
2726 | abort (); | |
2727 | ||
2728 | if (h != NULL) | |
2729 | off = h->got.offset; | |
2730 | else | |
2731 | { | |
2732 | if (local_got_offsets == NULL) | |
2733 | abort (); | |
2734 | ||
2735 | off = local_got_offsets[r_symndx]; | |
2736 | } | |
2737 | ||
2738 | if ((off & 1) != 0) | |
2739 | off &= ~1; | |
26e41594 | 2740 | else |
13ae64f3 | 2741 | { |
947216bf AM |
2742 | Elf_Internal_Rela outrel; |
2743 | bfd_byte *loc; | |
13ae64f3 JJ |
2744 | int dr_type, indx; |
2745 | ||
2746 | if (htab->srelgot == NULL) | |
2747 | abort (); | |
2748 | ||
2749 | outrel.r_offset = (htab->sgot->output_section->vma | |
2750 | + htab->sgot->output_offset + off); | |
2751 | ||
13ae64f3 JJ |
2752 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
2753 | if (r_type == R_386_TLS_GD) | |
2754 | dr_type = R_386_TLS_DTPMOD32; | |
37e55690 JJ |
2755 | else if (tls_type == GOT_TLS_IE_POS) |
2756 | dr_type = R_386_TLS_TPOFF; | |
13ae64f3 JJ |
2757 | else |
2758 | dr_type = R_386_TLS_TPOFF32; | |
37e55690 JJ |
2759 | if (dr_type == R_386_TLS_TPOFF && indx == 0) |
2760 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
2761 | htab->sgot->contents + off); | |
2762 | else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) | |
c5c1f40c | 2763 | bfd_put_32 (output_bfd, dtpoff_base (info) - relocation, |
c366c25e JJ |
2764 | htab->sgot->contents + off); |
2765 | else | |
2766 | bfd_put_32 (output_bfd, 0, | |
2767 | htab->sgot->contents + off); | |
13ae64f3 | 2768 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
947216bf AM |
2769 | loc = htab->srelgot->contents; |
2770 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2771 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2772 | ||
2773 | if (r_type == R_386_TLS_GD) | |
2774 | { | |
2775 | if (indx == 0) | |
2776 | { | |
82e51918 | 2777 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
2778 | bfd_put_32 (output_bfd, |
2779 | relocation - dtpoff_base (info), | |
2780 | htab->sgot->contents + off + 4); | |
2781 | } | |
2782 | else | |
2783 | { | |
2784 | bfd_put_32 (output_bfd, 0, | |
2785 | htab->sgot->contents + off + 4); | |
2786 | outrel.r_info = ELF32_R_INFO (indx, | |
2787 | R_386_TLS_DTPOFF32); | |
2788 | outrel.r_offset += 4; | |
2789 | htab->srelgot->reloc_count++; | |
947216bf AM |
2790 | loc += sizeof (Elf32_External_Rel); |
2791 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
13ae64f3 JJ |
2792 | } |
2793 | } | |
37e55690 JJ |
2794 | else if (tls_type == GOT_TLS_IE_BOTH) |
2795 | { | |
2796 | bfd_put_32 (output_bfd, | |
2797 | indx == 0 ? relocation - dtpoff_base (info) : 0, | |
2798 | htab->sgot->contents + off + 4); | |
2799 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
2800 | outrel.r_offset += 4; | |
2801 | htab->srelgot->reloc_count++; | |
947216bf | 2802 | loc += sizeof (Elf32_External_Rel); |
37e55690 JJ |
2803 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2804 | } | |
13ae64f3 JJ |
2805 | |
2806 | if (h != NULL) | |
2807 | h->got.offset |= 1; | |
2808 | else | |
2809 | local_got_offsets[r_symndx] |= 1; | |
2810 | } | |
2811 | ||
2812 | if (off >= (bfd_vma) -2) | |
2813 | abort (); | |
2814 | if (r_type == ELF32_R_TYPE (rel->r_info)) | |
2815 | { | |
2816 | relocation = htab->sgot->output_offset + off; | |
37e55690 JJ |
2817 | if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) |
2818 | && tls_type == GOT_TLS_IE_BOTH) | |
2819 | relocation += 4; | |
2820 | if (r_type == R_386_TLS_IE) | |
2821 | relocation += htab->sgot->output_section->vma; | |
b34976b6 | 2822 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
2823 | } |
2824 | else | |
2825 | { | |
2826 | unsigned int val, type; | |
2827 | bfd_vma roff; | |
2828 | ||
2829 | /* GD->IE transition. */ | |
2830 | BFD_ASSERT (rel->r_offset >= 2); | |
2831 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2832 | BFD_ASSERT (type == 0x8d || type == 0x04); | |
2833 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2834 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) | |
2835 | == 0xe8); | |
2836 | BFD_ASSERT (rel + 1 < relend); | |
2837 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2838 | roff = rel->r_offset - 3; | |
2839 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2840 | if (type == 0x04) | |
2841 | { | |
2842 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
2843 | Change it into: | |
2844 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
2845 | BFD_ASSERT (rel->r_offset >= 3); | |
2846 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2847 | contents + rel->r_offset - 3) | |
2848 | == 0x8d); | |
2849 | BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3)); | |
2850 | val >>= 3; | |
2851 | } | |
2852 | else | |
2853 | { | |
2854 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
2855 | Change it into: | |
2856 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
2857 | BFD_ASSERT (rel->r_offset + 10 <= input_section->_raw_size); | |
2858 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2859 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2860 | contents + rel->r_offset + 9) | |
2861 | == 0x90); | |
2862 | roff = rel->r_offset - 2; | |
2863 | } | |
2864 | memcpy (contents + roff, | |
2865 | "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); | |
2866 | contents[roff + 7] = 0x80 | (val & 7); | |
37e55690 JJ |
2867 | /* If foo is used only with foo@gotntpoff(%reg) and |
2868 | foo@indntpoff, but not with foo@gottpoff(%reg), change | |
2869 | subl $foo@gottpoff(%reg), %eax | |
2870 | into: | |
2871 | addl $foo@gotntpoff(%reg), %eax. */ | |
2872 | if (r_type == R_386_TLS_GOTIE) | |
2873 | { | |
2874 | contents[roff + 6] = 0x03; | |
2875 | if (tls_type == GOT_TLS_IE_BOTH) | |
2876 | off += 4; | |
2877 | } | |
13ae64f3 JJ |
2878 | bfd_put_32 (output_bfd, htab->sgot->output_offset + off, |
2879 | contents + roff + 8); | |
2880 | /* Skip R_386_PLT32. */ | |
2881 | rel++; | |
2882 | continue; | |
2883 | } | |
2884 | break; | |
2885 | ||
2886 | case R_386_TLS_LDM: | |
2887 | if (! info->shared) | |
2888 | { | |
2889 | unsigned int val; | |
2890 | ||
2891 | /* LD->LE transition: | |
2892 | Ensure it is: | |
2893 | leal foo(%reg), %eax; call ___tls_get_addr. | |
2894 | We change it into: | |
2895 | movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */ | |
2896 | BFD_ASSERT (rel->r_offset >= 2); | |
2897 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2) | |
2898 | == 0x8d); | |
2899 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2900 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2901 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2902 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) | |
2903 | == 0xe8); | |
2904 | BFD_ASSERT (rel + 1 < relend); | |
2905 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2906 | memcpy (contents + rel->r_offset - 2, | |
2907 | "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); | |
2908 | /* Skip R_386_PLT32. */ | |
2909 | rel++; | |
2910 | continue; | |
2911 | } | |
2912 | ||
2913 | if (htab->sgot == NULL) | |
2914 | abort (); | |
2915 | ||
2916 | off = htab->tls_ldm_got.offset; | |
2917 | if (off & 1) | |
2918 | off &= ~1; | |
2919 | else | |
2920 | { | |
947216bf AM |
2921 | Elf_Internal_Rela outrel; |
2922 | bfd_byte *loc; | |
13ae64f3 JJ |
2923 | |
2924 | if (htab->srelgot == NULL) | |
2925 | abort (); | |
2926 | ||
2927 | outrel.r_offset = (htab->sgot->output_section->vma | |
2928 | + htab->sgot->output_offset + off); | |
2929 | ||
2930 | bfd_put_32 (output_bfd, 0, | |
2931 | htab->sgot->contents + off); | |
2932 | bfd_put_32 (output_bfd, 0, | |
2933 | htab->sgot->contents + off + 4); | |
2934 | outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); | |
947216bf AM |
2935 | loc = htab->srelgot->contents; |
2936 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2937 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2938 | htab->tls_ldm_got.offset |= 1; | |
2939 | } | |
2940 | relocation = htab->sgot->output_offset + off; | |
b34976b6 | 2941 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
2942 | break; |
2943 | ||
2944 | case R_386_TLS_LDO_32: | |
a45bb67d | 2945 | if (info->shared || (input_section->flags & SEC_CODE) == 0) |
13ae64f3 JJ |
2946 | relocation -= dtpoff_base (info); |
2947 | else | |
2948 | /* When converting LDO to LE, we must negate. */ | |
2949 | relocation = -tpoff (info, relocation); | |
2950 | break; | |
2951 | ||
2952 | case R_386_TLS_LE_32: | |
13ae64f3 | 2953 | case R_386_TLS_LE: |
37e55690 JJ |
2954 | if (info->shared) |
2955 | { | |
947216bf | 2956 | Elf_Internal_Rela outrel; |
37e55690 | 2957 | asection *sreloc; |
947216bf | 2958 | bfd_byte *loc; |
37e55690 JJ |
2959 | int indx; |
2960 | ||
2961 | outrel.r_offset = rel->r_offset | |
2962 | + input_section->output_section->vma | |
2963 | + input_section->output_offset; | |
2964 | if (h != NULL && h->dynindx != -1) | |
2965 | indx = h->dynindx; | |
2966 | else | |
2967 | indx = 0; | |
2968 | if (r_type == R_386_TLS_LE_32) | |
2969 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); | |
2970 | else | |
2971 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
2972 | sreloc = elf_section_data (input_section)->sreloc; | |
2973 | if (sreloc == NULL) | |
2974 | abort (); | |
947216bf AM |
2975 | loc = sreloc->contents; |
2976 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
2977 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2978 | if (indx) | |
2979 | continue; | |
2980 | else if (r_type == R_386_TLS_LE_32) | |
2981 | relocation = dtpoff_base (info) - relocation; | |
2982 | else | |
2983 | relocation -= dtpoff_base (info); | |
2984 | } | |
2985 | else if (r_type == R_386_TLS_LE_32) | |
2986 | relocation = tpoff (info, relocation); | |
2987 | else | |
2988 | relocation = -tpoff (info, relocation); | |
13ae64f3 JJ |
2989 | break; |
2990 | ||
252b5132 RH |
2991 | default: |
2992 | break; | |
2993 | } | |
2994 | ||
239e1f3a AM |
2995 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
2996 | because such sections are not SEC_ALLOC and thus ld.so will | |
2997 | not process them. */ | |
8c694914 | 2998 | if (unresolved_reloc |
239e1f3a | 2999 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
8c694914 | 3000 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) |
6a30718d JJ |
3001 | { |
3002 | (*_bfd_error_handler) | |
3003 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), | |
3004 | bfd_archive_filename (input_bfd), | |
3005 | bfd_get_section_name (input_bfd, input_section), | |
3006 | (long) rel->r_offset, | |
3007 | h->root.root.string); | |
b34976b6 | 3008 | return FALSE; |
6a30718d | 3009 | } |
83be169b | 3010 | |
252b5132 RH |
3011 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3012 | contents, rel->r_offset, | |
3013 | relocation, (bfd_vma) 0); | |
3014 | ||
cf5c0c5b | 3015 | if (r != bfd_reloc_ok) |
252b5132 | 3016 | { |
cf5c0c5b | 3017 | const char *name; |
ffb2e45b | 3018 | |
cf5c0c5b AM |
3019 | if (h != NULL) |
3020 | name = h->root.root.string; | |
3021 | else | |
3022 | { | |
3023 | name = bfd_elf_string_from_elf_section (input_bfd, | |
3024 | symtab_hdr->sh_link, | |
3025 | sym->st_name); | |
3026 | if (name == NULL) | |
b34976b6 | 3027 | return FALSE; |
cf5c0c5b AM |
3028 | if (*name == '\0') |
3029 | name = bfd_section_name (input_bfd, sec); | |
3030 | } | |
ffb2e45b | 3031 | |
cf5c0c5b AM |
3032 | if (r == bfd_reloc_overflow) |
3033 | { | |
cf5c0c5b AM |
3034 | if (! ((*info->callbacks->reloc_overflow) |
3035 | (info, name, howto->name, (bfd_vma) 0, | |
3036 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 3037 | return FALSE; |
cf5c0c5b AM |
3038 | } |
3039 | else | |
3040 | { | |
3041 | (*_bfd_error_handler) | |
3042 | (_("%s(%s+0x%lx): reloc against `%s': error %d"), | |
3043 | bfd_archive_filename (input_bfd), | |
3044 | bfd_get_section_name (input_bfd, input_section), | |
3045 | (long) rel->r_offset, name, (int) r); | |
b34976b6 | 3046 | return FALSE; |
cf5c0c5b | 3047 | } |
252b5132 RH |
3048 | } |
3049 | } | |
3050 | ||
b34976b6 | 3051 | return TRUE; |
252b5132 RH |
3052 | } |
3053 | ||
3054 | /* Finish up dynamic symbol handling. We set the contents of various | |
3055 | dynamic sections here. */ | |
3056 | ||
b34976b6 | 3057 | static bfd_boolean |
252b5132 RH |
3058 | elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym) |
3059 | bfd *output_bfd; | |
3060 | struct bfd_link_info *info; | |
3061 | struct elf_link_hash_entry *h; | |
3062 | Elf_Internal_Sym *sym; | |
3063 | { | |
6725bdbf | 3064 | struct elf_i386_link_hash_table *htab; |
252b5132 | 3065 | |
6725bdbf | 3066 | htab = elf_i386_hash_table (info); |
252b5132 RH |
3067 | |
3068 | if (h->plt.offset != (bfd_vma) -1) | |
3069 | { | |
252b5132 RH |
3070 | bfd_vma plt_index; |
3071 | bfd_vma got_offset; | |
947216bf AM |
3072 | Elf_Internal_Rela rel; |
3073 | bfd_byte *loc; | |
252b5132 RH |
3074 | |
3075 | /* This symbol has an entry in the procedure linkage table. Set | |
3076 | it up. */ | |
3077 | ||
ffb2e45b AM |
3078 | if (h->dynindx == -1 |
3079 | || htab->splt == NULL | |
3080 | || htab->sgotplt == NULL | |
3081 | || htab->srelplt == NULL) | |
3082 | abort (); | |
252b5132 RH |
3083 | |
3084 | /* Get the index in the procedure linkage table which | |
3085 | corresponds to this symbol. This is the index of this symbol | |
3086 | in all the symbols for which we are making plt entries. The | |
3087 | first entry in the procedure linkage table is reserved. */ | |
3088 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3089 | ||
3090 | /* Get the offset into the .got table of the entry that | |
3091 | corresponds to this function. Each .got entry is 4 bytes. | |
3092 | The first three are reserved. */ | |
3093 | got_offset = (plt_index + 3) * 4; | |
3094 | ||
3095 | /* Fill in the entry in the procedure linkage table. */ | |
3096 | if (! info->shared) | |
3097 | { | |
6725bdbf | 3098 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry, |
252b5132 RH |
3099 | PLT_ENTRY_SIZE); |
3100 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
3101 | (htab->sgotplt->output_section->vma |
3102 | + htab->sgotplt->output_offset | |
252b5132 | 3103 | + got_offset), |
6725bdbf | 3104 | htab->splt->contents + h->plt.offset + 2); |
252b5132 RH |
3105 | } |
3106 | else | |
3107 | { | |
6725bdbf | 3108 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry, |
252b5132 RH |
3109 | PLT_ENTRY_SIZE); |
3110 | bfd_put_32 (output_bfd, got_offset, | |
6725bdbf | 3111 | htab->splt->contents + h->plt.offset + 2); |
252b5132 RH |
3112 | } |
3113 | ||
3114 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel), | |
6725bdbf | 3115 | htab->splt->contents + h->plt.offset + 7); |
252b5132 | 3116 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), |
6725bdbf | 3117 | htab->splt->contents + h->plt.offset + 12); |
252b5132 RH |
3118 | |
3119 | /* Fill in the entry in the global offset table. */ | |
3120 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
3121 | (htab->splt->output_section->vma |
3122 | + htab->splt->output_offset | |
252b5132 RH |
3123 | + h->plt.offset |
3124 | + 6), | |
6725bdbf | 3125 | htab->sgotplt->contents + got_offset); |
252b5132 RH |
3126 | |
3127 | /* Fill in the entry in the .rel.plt section. */ | |
6725bdbf AM |
3128 | rel.r_offset = (htab->sgotplt->output_section->vma |
3129 | + htab->sgotplt->output_offset | |
252b5132 RH |
3130 | + got_offset); |
3131 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); | |
947216bf | 3132 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel); |
0ac8d2ca | 3133 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3134 | |
3135 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
3136 | { | |
3137 | /* Mark the symbol as undefined, rather than as defined in | |
51b64d56 AM |
3138 | the .plt section. Leave the value alone. This is a clue |
3139 | for the dynamic linker, to make function pointer | |
3140 | comparisons work between an application and shared | |
cedb70c5 | 3141 | library. */ |
252b5132 RH |
3142 | sym->st_shndx = SHN_UNDEF; |
3143 | } | |
3144 | } | |
3145 | ||
13ae64f3 JJ |
3146 | if (h->got.offset != (bfd_vma) -1 |
3147 | && elf_i386_hash_entry(h)->tls_type != GOT_TLS_GD | |
37e55690 | 3148 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0) |
252b5132 | 3149 | { |
947216bf AM |
3150 | Elf_Internal_Rela rel; |
3151 | bfd_byte *loc; | |
252b5132 RH |
3152 | |
3153 | /* This symbol has an entry in the global offset table. Set it | |
3154 | up. */ | |
3155 | ||
ffb2e45b AM |
3156 | if (htab->sgot == NULL || htab->srelgot == NULL) |
3157 | abort (); | |
252b5132 | 3158 | |
6725bdbf AM |
3159 | rel.r_offset = (htab->sgot->output_section->vma |
3160 | + htab->sgot->output_offset | |
dc810e39 | 3161 | + (h->got.offset & ~(bfd_vma) 1)); |
252b5132 | 3162 | |
dd5724d5 AM |
3163 | /* If this is a static link, or it is a -Bsymbolic link and the |
3164 | symbol is defined locally or was forced to be local because | |
3165 | of a version file, we just want to emit a RELATIVE reloc. | |
252b5132 RH |
3166 | The entry in the global offset table will already have been |
3167 | initialized in the relocate_section function. */ | |
6725bdbf | 3168 | if (info->shared |
586119b3 | 3169 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
dd5724d5 | 3170 | { |
6725bdbf | 3171 | BFD_ASSERT((h->got.offset & 1) != 0); |
dd5724d5 AM |
3172 | rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
3173 | } | |
252b5132 RH |
3174 | else |
3175 | { | |
dd5724d5 | 3176 | BFD_ASSERT((h->got.offset & 1) == 0); |
6725bdbf AM |
3177 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
3178 | htab->sgot->contents + h->got.offset); | |
252b5132 RH |
3179 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); |
3180 | } | |
3181 | ||
947216bf AM |
3182 | loc = htab->srelgot->contents; |
3183 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3184 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3185 | } |
3186 | ||
791987af | 3187 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
252b5132 | 3188 | { |
947216bf AM |
3189 | Elf_Internal_Rela rel; |
3190 | bfd_byte *loc; | |
252b5132 RH |
3191 | |
3192 | /* This symbol needs a copy reloc. Set it up. */ | |
3193 | ||
ffb2e45b AM |
3194 | if (h->dynindx == -1 |
3195 | || (h->root.type != bfd_link_hash_defined | |
3196 | && h->root.type != bfd_link_hash_defweak) | |
3197 | || htab->srelbss == NULL) | |
3198 | abort (); | |
252b5132 RH |
3199 | |
3200 | rel.r_offset = (h->root.u.def.value | |
3201 | + h->root.u.def.section->output_section->vma | |
3202 | + h->root.u.def.section->output_offset); | |
3203 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); | |
947216bf AM |
3204 | loc = htab->srelbss->contents; |
3205 | loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3206 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3207 | } |
3208 | ||
3209 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
3210 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
3211 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
3212 | sym->st_shndx = SHN_ABS; | |
3213 | ||
b34976b6 | 3214 | return TRUE; |
252b5132 RH |
3215 | } |
3216 | ||
38701953 AM |
3217 | /* Used to decide how to sort relocs in an optimal manner for the |
3218 | dynamic linker, before writing them out. */ | |
3219 | ||
3220 | static enum elf_reloc_type_class | |
3221 | elf_i386_reloc_type_class (rela) | |
3222 | const Elf_Internal_Rela *rela; | |
3223 | { | |
3224 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
3225 | { | |
3226 | case R_386_RELATIVE: | |
3227 | return reloc_class_relative; | |
3228 | case R_386_JUMP_SLOT: | |
3229 | return reloc_class_plt; | |
3230 | case R_386_COPY: | |
3231 | return reloc_class_copy; | |
3232 | default: | |
3233 | return reloc_class_normal; | |
3234 | } | |
3235 | } | |
3236 | ||
252b5132 RH |
3237 | /* Finish up the dynamic sections. */ |
3238 | ||
b34976b6 | 3239 | static bfd_boolean |
252b5132 RH |
3240 | elf_i386_finish_dynamic_sections (output_bfd, info) |
3241 | bfd *output_bfd; | |
3242 | struct bfd_link_info *info; | |
3243 | { | |
6725bdbf | 3244 | struct elf_i386_link_hash_table *htab; |
252b5132 | 3245 | bfd *dynobj; |
252b5132 RH |
3246 | asection *sdyn; |
3247 | ||
6725bdbf | 3248 | htab = elf_i386_hash_table (info); |
ebe50bae | 3249 | dynobj = htab->elf.dynobj; |
252b5132 RH |
3250 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
3251 | ||
ebe50bae | 3252 | if (htab->elf.dynamic_sections_created) |
252b5132 | 3253 | { |
252b5132 RH |
3254 | Elf32_External_Dyn *dyncon, *dynconend; |
3255 | ||
ffb2e45b AM |
3256 | if (sdyn == NULL || htab->sgot == NULL) |
3257 | abort (); | |
252b5132 RH |
3258 | |
3259 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
3260 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
3261 | for (; dyncon < dynconend; dyncon++) | |
3262 | { | |
3263 | Elf_Internal_Dyn dyn; | |
51b64d56 | 3264 | asection *s; |
252b5132 RH |
3265 | |
3266 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
3267 | ||
3268 | switch (dyn.d_tag) | |
3269 | { | |
3270 | default: | |
0ac8d2ca | 3271 | continue; |
252b5132 RH |
3272 | |
3273 | case DT_PLTGOT: | |
6725bdbf | 3274 | dyn.d_un.d_ptr = htab->sgot->output_section->vma; |
6725bdbf AM |
3275 | break; |
3276 | ||
252b5132 | 3277 | case DT_JMPREL: |
6348e046 AM |
3278 | s = htab->srelplt; |
3279 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
252b5132 RH |
3280 | break; |
3281 | ||
3282 | case DT_PLTRELSZ: | |
6348e046 AM |
3283 | s = htab->srelplt; |
3284 | dyn.d_un.d_val = s->_raw_size; | |
252b5132 RH |
3285 | break; |
3286 | ||
3287 | case DT_RELSZ: | |
3288 | /* My reading of the SVR4 ABI indicates that the | |
3289 | procedure linkage table relocs (DT_JMPREL) should be | |
3290 | included in the overall relocs (DT_REL). This is | |
3291 | what Solaris does. However, UnixWare can not handle | |
3292 | that case. Therefore, we override the DT_RELSZ entry | |
6348e046 AM |
3293 | here to make it not include the JMPREL relocs. */ |
3294 | s = htab->srelplt; | |
3295 | if (s == NULL) | |
3296 | continue; | |
3297 | dyn.d_un.d_val -= s->_raw_size; | |
3298 | break; | |
3299 | ||
3300 | case DT_REL: | |
3301 | /* We may not be using the standard ELF linker script. | |
3302 | If .rel.plt is the first .rel section, we adjust | |
3303 | DT_REL to not include it. */ | |
3304 | s = htab->srelplt; | |
3305 | if (s == NULL) | |
3306 | continue; | |
3307 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
3308 | continue; | |
3309 | dyn.d_un.d_ptr += s->_raw_size; | |
252b5132 RH |
3310 | break; |
3311 | } | |
0ac8d2ca AM |
3312 | |
3313 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
3314 | } |
3315 | ||
3316 | /* Fill in the first entry in the procedure linkage table. */ | |
6725bdbf | 3317 | if (htab->splt && htab->splt->_raw_size > 0) |
252b5132 RH |
3318 | { |
3319 | if (info->shared) | |
6725bdbf AM |
3320 | memcpy (htab->splt->contents, |
3321 | elf_i386_pic_plt0_entry, PLT_ENTRY_SIZE); | |
252b5132 RH |
3322 | else |
3323 | { | |
6725bdbf AM |
3324 | memcpy (htab->splt->contents, |
3325 | elf_i386_plt0_entry, PLT_ENTRY_SIZE); | |
252b5132 | 3326 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3327 | (htab->sgotplt->output_section->vma |
3328 | + htab->sgotplt->output_offset | |
3329 | + 4), | |
3330 | htab->splt->contents + 2); | |
252b5132 | 3331 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3332 | (htab->sgotplt->output_section->vma |
3333 | + htab->sgotplt->output_offset | |
3334 | + 8), | |
3335 | htab->splt->contents + 8); | |
252b5132 RH |
3336 | } |
3337 | ||
3338 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
3339 | really seem like the right value. */ | |
6725bdbf AM |
3340 | elf_section_data (htab->splt->output_section) |
3341 | ->this_hdr.sh_entsize = 4; | |
252b5132 RH |
3342 | } |
3343 | } | |
3344 | ||
12d0ee4a | 3345 | if (htab->sgotplt) |
252b5132 | 3346 | { |
12d0ee4a AM |
3347 | /* Fill in the first three entries in the global offset table. */ |
3348 | if (htab->sgotplt->_raw_size > 0) | |
3349 | { | |
3350 | bfd_put_32 (output_bfd, | |
3351 | (sdyn == NULL ? (bfd_vma) 0 | |
3352 | : sdyn->output_section->vma + sdyn->output_offset), | |
3353 | htab->sgotplt->contents); | |
3354 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4); | |
3355 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8); | |
3356 | } | |
252b5132 | 3357 | |
12d0ee4a AM |
3358 | elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4; |
3359 | } | |
b34976b6 | 3360 | return TRUE; |
252b5132 RH |
3361 | } |
3362 | ||
3363 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vec | |
3364 | #define TARGET_LITTLE_NAME "elf32-i386" | |
3365 | #define ELF_ARCH bfd_arch_i386 | |
3366 | #define ELF_MACHINE_CODE EM_386 | |
3367 | #define ELF_MAXPAGESIZE 0x1000 | |
252b5132 RH |
3368 | |
3369 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3370 | #define elf_backend_can_refcount 1 |
252b5132 RH |
3371 | #define elf_backend_want_got_plt 1 |
3372 | #define elf_backend_plt_readonly 1 | |
3373 | #define elf_backend_want_plt_sym 0 | |
3374 | #define elf_backend_got_header_size 12 | |
3375 | #define elf_backend_plt_header_size PLT_ENTRY_SIZE | |
3376 | ||
8c29f035 AM |
3377 | /* Support RELA for objdump of prelink objects. */ |
3378 | #define elf_info_to_howto elf_i386_info_to_howto_rel | |
dd5724d5 AM |
3379 | #define elf_info_to_howto_rel elf_i386_info_to_howto_rel |
3380 | ||
13ae64f3 JJ |
3381 | #define bfd_elf32_mkobject elf_i386_mkobject |
3382 | #define elf_backend_object_p elf_i386_object_p | |
3383 | ||
dd5724d5 AM |
3384 | #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name |
3385 | #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create | |
3386 | #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup | |
3387 | ||
3388 | #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol | |
3389 | #define elf_backend_check_relocs elf_i386_check_relocs | |
0ac8d2ca | 3390 | #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol |
6725bdbf | 3391 | #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections |
0ac8d2ca | 3392 | #define elf_backend_fake_sections elf_i386_fake_sections |
dd5724d5 AM |
3393 | #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections |
3394 | #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol | |
3395 | #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook | |
3396 | #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook | |
c5fccbec DJ |
3397 | #define elf_backend_grok_prstatus elf_i386_grok_prstatus |
3398 | #define elf_backend_grok_psinfo elf_i386_grok_psinfo | |
db6751f2 | 3399 | #define elf_backend_reloc_type_class elf_i386_reloc_type_class |
0ac8d2ca AM |
3400 | #define elf_backend_relocate_section elf_i386_relocate_section |
3401 | #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections | |
dd5724d5 | 3402 | |
252b5132 | 3403 | #include "elf32-target.h" |
2bc3c89a AM |
3404 | |
3405 | /* FreeBSD support. */ | |
3406 | ||
3407 | #undef TARGET_LITTLE_SYM | |
3408 | #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec | |
3409 | #undef TARGET_LITTLE_NAME | |
3410 | #define TARGET_LITTLE_NAME "elf32-i386-freebsd" | |
3411 | ||
3412 | /* The kernel recognizes executables as valid only if they carry a | |
3413 | "FreeBSD" label in the ELF header. So we put this label on all | |
3414 | executables and (for simplicity) also all other object files. */ | |
3415 | ||
3416 | static void elf_i386_post_process_headers | |
3417 | PARAMS ((bfd *, struct bfd_link_info *)); | |
3418 | ||
3419 | static void | |
3420 | elf_i386_post_process_headers (abfd, link_info) | |
3421 | bfd *abfd; | |
3422 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; | |
3423 | { | |
3424 | Elf_Internal_Ehdr *i_ehdrp; | |
3425 | ||
3426 | i_ehdrp = elf_elfheader (abfd); | |
3427 | ||
3428 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
3429 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; | |
3430 | #ifdef OLD_FREEBSD_ABI_LABEL | |
3431 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
3432 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
caf47ea6 | 3433 | #endif |
2bc3c89a AM |
3434 | } |
3435 | ||
3436 | #undef elf_backend_post_process_headers | |
571fe01f NC |
3437 | #define elf_backend_post_process_headers elf_i386_post_process_headers |
3438 | #undef elf32_bed | |
3439 | #define elf32_bed elf32_i386_fbsd_bed | |
2bc3c89a AM |
3440 | |
3441 | #include "elf32-target.h" |