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)); | |
29 | static void elf_i386_info_to_howto | |
947216bf | 30 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
252b5132 | 31 | static void elf_i386_info_to_howto_rel |
947216bf | 32 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
b34976b6 | 33 | static bfd_boolean elf_i386_is_local_label_name |
ebe50bae | 34 | PARAMS ((bfd *, const char *)); |
b34976b6 | 35 | static bfd_boolean elf_i386_grok_prstatus |
38701953 | 36 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
b34976b6 | 37 | static bfd_boolean elf_i386_grok_psinfo |
38701953 AM |
38 | PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
39 | static struct bfd_hash_entry *link_hash_newfunc | |
252b5132 RH |
40 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
41 | static struct bfd_link_hash_table *elf_i386_link_hash_table_create | |
42 | PARAMS ((bfd *)); | |
b34976b6 | 43 | static bfd_boolean create_got_section |
571fe01f | 44 | PARAMS ((bfd *, struct bfd_link_info *)); |
b34976b6 | 45 | static bfd_boolean elf_i386_create_dynamic_sections |
571fe01f | 46 | PARAMS ((bfd *, struct bfd_link_info *)); |
51b64d56 | 47 | static void elf_i386_copy_indirect_symbol |
b48fa14c AM |
48 | PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *, |
49 | struct elf_link_hash_entry *)); | |
13ae64f3 JJ |
50 | static int elf_i386_tls_transition |
51 | PARAMS ((struct bfd_link_info *, int, int)); | |
52 | ||
b34976b6 | 53 | static bfd_boolean elf_i386_mkobject |
571fe01f | 54 | PARAMS ((bfd *)); |
b34976b6 | 55 | static bfd_boolean elf_i386_object_p |
571fe01f | 56 | PARAMS ((bfd *)); |
b34976b6 | 57 | static bfd_boolean elf_i386_check_relocs |
252b5132 RH |
58 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
59 | const Elf_Internal_Rela *)); | |
a7b97311 | 60 | static asection *elf_i386_gc_mark_hook |
1e2f5b6e | 61 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
a7b97311 | 62 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
b34976b6 | 63 | static bfd_boolean elf_i386_gc_sweep_hook |
a7b97311 AM |
64 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
65 | const Elf_Internal_Rela *)); | |
b34976b6 | 66 | static bfd_boolean elf_i386_adjust_dynamic_symbol |
252b5132 | 67 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
b34976b6 | 68 | static bfd_boolean allocate_dynrelocs |
0c715baa | 69 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
b34976b6 | 70 | static bfd_boolean readonly_dynrelocs |
6725bdbf | 71 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
b34976b6 | 72 | static bfd_boolean elf_i386_fake_sections |
947216bf | 73 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); |
b34976b6 | 74 | static bfd_boolean elf_i386_size_dynamic_sections |
252b5132 | 75 | PARAMS ((bfd *, struct bfd_link_info *)); |
13ae64f3 JJ |
76 | static bfd_vma dtpoff_base |
77 | PARAMS ((struct bfd_link_info *)); | |
78 | static bfd_vma tpoff | |
79 | PARAMS ((struct bfd_link_info *, bfd_vma)); | |
b34976b6 | 80 | static bfd_boolean elf_i386_relocate_section |
252b5132 RH |
81 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
82 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 | 83 | static bfd_boolean elf_i386_finish_dynamic_symbol |
252b5132 RH |
84 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
85 | Elf_Internal_Sym *)); | |
f51e552e AM |
86 | static enum elf_reloc_type_class elf_i386_reloc_type_class |
87 | PARAMS ((const Elf_Internal_Rela *)); | |
b34976b6 | 88 | static bfd_boolean elf_i386_finish_dynamic_sections |
38701953 | 89 | PARAMS ((bfd *, struct bfd_link_info *)); |
252b5132 | 90 | |
571fe01f | 91 | #define USE_REL 1 /* 386 uses REL relocations instead of RELA. */ |
252b5132 RH |
92 | |
93 | #include "elf/i386.h" | |
94 | ||
95 | static reloc_howto_type elf_howto_table[]= | |
96 | { | |
b34976b6 | 97 | HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield, |
1b452ec6 | 98 | bfd_elf_generic_reloc, "R_386_NONE", |
b34976b6 AM |
99 | TRUE, 0x00000000, 0x00000000, FALSE), |
100 | HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 101 | bfd_elf_generic_reloc, "R_386_32", |
b34976b6 AM |
102 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
103 | HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 104 | bfd_elf_generic_reloc, "R_386_PC32", |
b34976b6 AM |
105 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
106 | HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 107 | bfd_elf_generic_reloc, "R_386_GOT32", |
b34976b6 AM |
108 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
109 | HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 110 | bfd_elf_generic_reloc, "R_386_PLT32", |
b34976b6 AM |
111 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
112 | HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 113 | bfd_elf_generic_reloc, "R_386_COPY", |
b34976b6 AM |
114 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
115 | HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 116 | bfd_elf_generic_reloc, "R_386_GLOB_DAT", |
b34976b6 AM |
117 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
118 | HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 119 | bfd_elf_generic_reloc, "R_386_JUMP_SLOT", |
b34976b6 AM |
120 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
121 | HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 122 | bfd_elf_generic_reloc, "R_386_RELATIVE", |
b34976b6 AM |
123 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
124 | HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 125 | bfd_elf_generic_reloc, "R_386_GOTOFF", |
b34976b6 AM |
126 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
127 | HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 128 | bfd_elf_generic_reloc, "R_386_GOTPC", |
b34976b6 | 129 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
1b452ec6 | 130 | |
dc47f327 AM |
131 | /* We have a gap in the reloc numbers here. |
132 | R_386_standard counts the number up to this point, and | |
133 | R_386_ext_offset is the value to subtract from a reloc type of | |
134 | R_386_16 thru R_386_PC8 to form an index into this table. */ | |
1b452ec6 | 135 | #define R_386_standard ((unsigned int) R_386_GOTPC + 1) |
37e55690 | 136 | #define R_386_ext_offset ((unsigned int) R_386_TLS_TPOFF - R_386_standard) |
1b452ec6 | 137 | |
37e55690 | 138 | /* These relocs are a GNU extension. */ |
b34976b6 | 139 | HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
37e55690 | 140 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF", |
b34976b6 AM |
141 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
142 | HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 143 | bfd_elf_generic_reloc, "R_386_TLS_IE", |
b34976b6 AM |
144 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
145 | HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 146 | bfd_elf_generic_reloc, "R_386_TLS_GOTIE", |
b34976b6 AM |
147 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
148 | HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 149 | bfd_elf_generic_reloc, "R_386_TLS_LE", |
b34976b6 AM |
150 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
151 | HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 152 | bfd_elf_generic_reloc, "R_386_TLS_GD", |
b34976b6 AM |
153 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
154 | HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 155 | bfd_elf_generic_reloc, "R_386_TLS_LDM", |
b34976b6 AM |
156 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
157 | HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 158 | bfd_elf_generic_reloc, "R_386_16", |
b34976b6 AM |
159 | TRUE, 0xffff, 0xffff, FALSE), |
160 | HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 161 | bfd_elf_generic_reloc, "R_386_PC16", |
b34976b6 AM |
162 | TRUE, 0xffff, 0xffff, TRUE), |
163 | HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 164 | bfd_elf_generic_reloc, "R_386_8", |
b34976b6 AM |
165 | TRUE, 0xff, 0xff, FALSE), |
166 | HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
1b452ec6 | 167 | bfd_elf_generic_reloc, "R_386_PC8", |
b34976b6 | 168 | TRUE, 0xff, 0xff, TRUE), |
dc47f327 | 169 | |
dc47f327 | 170 | #define R_386_ext ((unsigned int) R_386_PC8 + 1 - R_386_ext_offset) |
13ae64f3 JJ |
171 | #define R_386_tls_offset ((unsigned int) R_386_TLS_LDO_32 - R_386_ext) |
172 | /* These are common with Solaris TLS implementation. */ | |
b34976b6 | 173 | HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
13ae64f3 | 174 | bfd_elf_generic_reloc, "R_386_TLS_LDO_32", |
b34976b6 AM |
175 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
176 | HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 177 | bfd_elf_generic_reloc, "R_386_TLS_IE_32", |
b34976b6 AM |
178 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
179 | HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 180 | bfd_elf_generic_reloc, "R_386_TLS_LE_32", |
b34976b6 AM |
181 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
182 | HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 183 | bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32", |
b34976b6 AM |
184 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
185 | HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 186 | bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32", |
b34976b6 AM |
187 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
188 | HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 189 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF32", |
b34976b6 | 190 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
13ae64f3 JJ |
191 | |
192 | /* Another gap. */ | |
193 | #define R_386_tls ((unsigned int) R_386_TLS_TPOFF32 + 1 - R_386_tls_offset) | |
194 | #define R_386_vt_offset ((unsigned int) R_386_GNU_VTINHERIT - R_386_tls) | |
252b5132 RH |
195 | |
196 | /* GNU extension to record C++ vtable hierarchy. */ | |
252b5132 RH |
197 | HOWTO (R_386_GNU_VTINHERIT, /* type */ |
198 | 0, /* rightshift */ | |
199 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
200 | 0, /* bitsize */ | |
b34976b6 | 201 | FALSE, /* pc_relative */ |
252b5132 RH |
202 | 0, /* bitpos */ |
203 | complain_overflow_dont, /* complain_on_overflow */ | |
204 | NULL, /* special_function */ | |
205 | "R_386_GNU_VTINHERIT", /* name */ | |
b34976b6 | 206 | FALSE, /* partial_inplace */ |
252b5132 RH |
207 | 0, /* src_mask */ |
208 | 0, /* dst_mask */ | |
b34976b6 | 209 | FALSE), /* pcrel_offset */ |
252b5132 RH |
210 | |
211 | /* GNU extension to record C++ vtable member usage. */ | |
252b5132 RH |
212 | HOWTO (R_386_GNU_VTENTRY, /* type */ |
213 | 0, /* rightshift */ | |
214 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
215 | 0, /* bitsize */ | |
b34976b6 | 216 | FALSE, /* pc_relative */ |
252b5132 RH |
217 | 0, /* bitpos */ |
218 | complain_overflow_dont, /* complain_on_overflow */ | |
219 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
220 | "R_386_GNU_VTENTRY", /* name */ | |
b34976b6 | 221 | FALSE, /* partial_inplace */ |
252b5132 RH |
222 | 0, /* src_mask */ |
223 | 0, /* dst_mask */ | |
b34976b6 | 224 | FALSE) /* pcrel_offset */ |
dc47f327 AM |
225 | |
226 | #define R_386_vt ((unsigned int) R_386_GNU_VTENTRY + 1 - R_386_vt_offset) | |
227 | ||
228 | }; | |
229 | ||
252b5132 RH |
230 | #ifdef DEBUG_GEN_RELOC |
231 | #define TRACE(str) fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str) | |
232 | #else | |
233 | #define TRACE(str) | |
234 | #endif | |
235 | ||
236 | static reloc_howto_type * | |
237 | elf_i386_reloc_type_lookup (abfd, code) | |
7442e600 | 238 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
239 | bfd_reloc_code_real_type code; |
240 | { | |
241 | switch (code) | |
242 | { | |
243 | case BFD_RELOC_NONE: | |
244 | TRACE ("BFD_RELOC_NONE"); | |
1b452ec6 | 245 | return &elf_howto_table[(unsigned int) R_386_NONE ]; |
252b5132 RH |
246 | |
247 | case BFD_RELOC_32: | |
248 | TRACE ("BFD_RELOC_32"); | |
1b452ec6 | 249 | return &elf_howto_table[(unsigned int) R_386_32 ]; |
252b5132 RH |
250 | |
251 | case BFD_RELOC_CTOR: | |
252 | TRACE ("BFD_RELOC_CTOR"); | |
1b452ec6 | 253 | return &elf_howto_table[(unsigned int) R_386_32 ]; |
252b5132 RH |
254 | |
255 | case BFD_RELOC_32_PCREL: | |
256 | TRACE ("BFD_RELOC_PC32"); | |
1b452ec6 | 257 | return &elf_howto_table[(unsigned int) R_386_PC32 ]; |
252b5132 RH |
258 | |
259 | case BFD_RELOC_386_GOT32: | |
260 | TRACE ("BFD_RELOC_386_GOT32"); | |
1b452ec6 | 261 | return &elf_howto_table[(unsigned int) R_386_GOT32 ]; |
252b5132 RH |
262 | |
263 | case BFD_RELOC_386_PLT32: | |
264 | TRACE ("BFD_RELOC_386_PLT32"); | |
1b452ec6 | 265 | return &elf_howto_table[(unsigned int) R_386_PLT32 ]; |
252b5132 RH |
266 | |
267 | case BFD_RELOC_386_COPY: | |
268 | TRACE ("BFD_RELOC_386_COPY"); | |
1b452ec6 | 269 | return &elf_howto_table[(unsigned int) R_386_COPY ]; |
252b5132 RH |
270 | |
271 | case BFD_RELOC_386_GLOB_DAT: | |
272 | TRACE ("BFD_RELOC_386_GLOB_DAT"); | |
1b452ec6 | 273 | return &elf_howto_table[(unsigned int) R_386_GLOB_DAT ]; |
252b5132 RH |
274 | |
275 | case BFD_RELOC_386_JUMP_SLOT: | |
276 | TRACE ("BFD_RELOC_386_JUMP_SLOT"); | |
1b452ec6 | 277 | return &elf_howto_table[(unsigned int) R_386_JUMP_SLOT ]; |
252b5132 RH |
278 | |
279 | case BFD_RELOC_386_RELATIVE: | |
280 | TRACE ("BFD_RELOC_386_RELATIVE"); | |
1b452ec6 | 281 | return &elf_howto_table[(unsigned int) R_386_RELATIVE ]; |
252b5132 RH |
282 | |
283 | case BFD_RELOC_386_GOTOFF: | |
284 | TRACE ("BFD_RELOC_386_GOTOFF"); | |
1b452ec6 | 285 | return &elf_howto_table[(unsigned int) R_386_GOTOFF ]; |
252b5132 RH |
286 | |
287 | case BFD_RELOC_386_GOTPC: | |
288 | TRACE ("BFD_RELOC_386_GOTPC"); | |
1b452ec6 | 289 | return &elf_howto_table[(unsigned int) R_386_GOTPC ]; |
252b5132 | 290 | |
37e55690 JJ |
291 | /* These relocs are a GNU extension. */ |
292 | case BFD_RELOC_386_TLS_TPOFF: | |
293 | TRACE ("BFD_RELOC_386_TLS_TPOFF"); | |
294 | return &elf_howto_table[(unsigned int) R_386_TLS_TPOFF - R_386_ext_offset]; | |
295 | ||
296 | case BFD_RELOC_386_TLS_IE: | |
297 | TRACE ("BFD_RELOC_386_TLS_IE"); | |
298 | return &elf_howto_table[(unsigned int) R_386_TLS_IE - R_386_ext_offset]; | |
299 | ||
300 | case BFD_RELOC_386_TLS_GOTIE: | |
301 | TRACE ("BFD_RELOC_386_TLS_GOTIE"); | |
302 | return &elf_howto_table[(unsigned int) R_386_TLS_GOTIE - R_386_ext_offset]; | |
303 | ||
13ae64f3 JJ |
304 | case BFD_RELOC_386_TLS_LE: |
305 | TRACE ("BFD_RELOC_386_TLS_LE"); | |
306 | return &elf_howto_table[(unsigned int) R_386_TLS_LE - R_386_ext_offset]; | |
307 | ||
308 | case BFD_RELOC_386_TLS_GD: | |
309 | TRACE ("BFD_RELOC_386_TLS_GD"); | |
310 | return &elf_howto_table[(unsigned int) R_386_TLS_GD - R_386_ext_offset]; | |
311 | ||
312 | case BFD_RELOC_386_TLS_LDM: | |
313 | TRACE ("BFD_RELOC_386_TLS_LDM"); | |
314 | return &elf_howto_table[(unsigned int) R_386_TLS_LDM - R_386_ext_offset]; | |
315 | ||
252b5132 RH |
316 | case BFD_RELOC_16: |
317 | TRACE ("BFD_RELOC_16"); | |
1b452ec6 | 318 | return &elf_howto_table[(unsigned int) R_386_16 - R_386_ext_offset]; |
252b5132 RH |
319 | |
320 | case BFD_RELOC_16_PCREL: | |
321 | TRACE ("BFD_RELOC_16_PCREL"); | |
1b452ec6 | 322 | return &elf_howto_table[(unsigned int) R_386_PC16 - R_386_ext_offset]; |
252b5132 RH |
323 | |
324 | case BFD_RELOC_8: | |
325 | TRACE ("BFD_RELOC_8"); | |
1b452ec6 | 326 | return &elf_howto_table[(unsigned int) R_386_8 - R_386_ext_offset]; |
252b5132 RH |
327 | |
328 | case BFD_RELOC_8_PCREL: | |
329 | TRACE ("BFD_RELOC_8_PCREL"); | |
1b452ec6 | 330 | return &elf_howto_table[(unsigned int) R_386_PC8 - R_386_ext_offset]; |
252b5132 | 331 | |
13ae64f3 JJ |
332 | /* Common with Sun TLS implementation. */ |
333 | case BFD_RELOC_386_TLS_LDO_32: | |
334 | TRACE ("BFD_RELOC_386_TLS_LDO_32"); | |
335 | return &elf_howto_table[(unsigned int) R_386_TLS_LDO_32 - R_386_tls_offset]; | |
336 | ||
337 | case BFD_RELOC_386_TLS_IE_32: | |
338 | TRACE ("BFD_RELOC_386_TLS_IE_32"); | |
339 | return &elf_howto_table[(unsigned int) R_386_TLS_IE_32 - R_386_tls_offset]; | |
340 | ||
341 | case BFD_RELOC_386_TLS_LE_32: | |
342 | TRACE ("BFD_RELOC_386_TLS_LE_32"); | |
343 | return &elf_howto_table[(unsigned int) R_386_TLS_LE_32 - R_386_tls_offset]; | |
344 | ||
345 | case BFD_RELOC_386_TLS_DTPMOD32: | |
346 | TRACE ("BFD_RELOC_386_TLS_DTPMOD32"); | |
347 | return &elf_howto_table[(unsigned int) R_386_TLS_DTPMOD32 - R_386_tls_offset]; | |
348 | ||
349 | case BFD_RELOC_386_TLS_DTPOFF32: | |
350 | TRACE ("BFD_RELOC_386_TLS_DTPOFF32"); | |
351 | return &elf_howto_table[(unsigned int) R_386_TLS_DTPOFF32 - R_386_tls_offset]; | |
352 | ||
353 | case BFD_RELOC_386_TLS_TPOFF32: | |
354 | TRACE ("BFD_RELOC_386_TLS_TPOFF32"); | |
355 | return &elf_howto_table[(unsigned int) R_386_TLS_TPOFF32 - R_386_tls_offset]; | |
356 | ||
252b5132 RH |
357 | case BFD_RELOC_VTABLE_INHERIT: |
358 | TRACE ("BFD_RELOC_VTABLE_INHERIT"); | |
dc47f327 AM |
359 | return &elf_howto_table[(unsigned int) R_386_GNU_VTINHERIT |
360 | - R_386_vt_offset]; | |
252b5132 RH |
361 | |
362 | case BFD_RELOC_VTABLE_ENTRY: | |
363 | TRACE ("BFD_RELOC_VTABLE_ENTRY"); | |
dc47f327 AM |
364 | return &elf_howto_table[(unsigned int) R_386_GNU_VTENTRY |
365 | - R_386_vt_offset]; | |
252b5132 RH |
366 | |
367 | default: | |
368 | break; | |
369 | } | |
370 | ||
371 | TRACE ("Unknown"); | |
372 | return 0; | |
373 | } | |
374 | ||
375 | static void | |
376 | elf_i386_info_to_howto (abfd, cache_ptr, dst) | |
947216bf AM |
377 | bfd *abfd ATTRIBUTE_UNUSED; |
378 | arelent *cache_ptr ATTRIBUTE_UNUSED; | |
379 | Elf_Internal_Rela *dst ATTRIBUTE_UNUSED; | |
252b5132 RH |
380 | { |
381 | abort (); | |
382 | } | |
383 | ||
384 | static void | |
385 | elf_i386_info_to_howto_rel (abfd, cache_ptr, dst) | |
7442e600 | 386 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 387 | arelent *cache_ptr; |
947216bf | 388 | Elf_Internal_Rela *dst; |
252b5132 | 389 | { |
dc47f327 AM |
390 | unsigned int r_type = ELF32_R_TYPE (dst->r_info); |
391 | unsigned int indx; | |
392 | ||
393 | if ((indx = r_type) >= R_386_standard | |
394 | && ((indx = r_type - R_386_ext_offset) - R_386_standard | |
395 | >= R_386_ext - R_386_standard) | |
13ae64f3 JJ |
396 | && ((indx = r_type - R_386_tls_offset) - R_386_ext |
397 | >= R_386_tls - R_386_ext) | |
398 | && ((indx = r_type - R_386_vt_offset) - R_386_tls | |
399 | >= R_386_vt - R_386_tls)) | |
252b5132 | 400 | { |
dc47f327 | 401 | (*_bfd_error_handler) (_("%s: invalid relocation type %d"), |
8f615d07 | 402 | bfd_archive_filename (abfd), (int) r_type); |
dc47f327 | 403 | indx = (unsigned int) R_386_NONE; |
252b5132 | 404 | } |
dc47f327 | 405 | cache_ptr->howto = &elf_howto_table[indx]; |
252b5132 RH |
406 | } |
407 | ||
408 | /* Return whether a symbol name implies a local label. The UnixWare | |
409 | 2.1 cc generates temporary symbols that start with .X, so we | |
410 | recognize them here. FIXME: do other SVR4 compilers also use .X?. | |
411 | If so, we should move the .X recognition into | |
412 | _bfd_elf_is_local_label_name. */ | |
413 | ||
b34976b6 | 414 | static bfd_boolean |
252b5132 RH |
415 | elf_i386_is_local_label_name (abfd, name) |
416 | bfd *abfd; | |
417 | const char *name; | |
418 | { | |
419 | if (name[0] == '.' && name[1] == 'X') | |
b34976b6 | 420 | return TRUE; |
252b5132 RH |
421 | |
422 | return _bfd_elf_is_local_label_name (abfd, name); | |
423 | } | |
424 | \f | |
38701953 | 425 | /* Support for core dump NOTE sections. */ |
b34976b6 | 426 | static bfd_boolean |
38701953 AM |
427 | elf_i386_grok_prstatus (abfd, note) |
428 | bfd *abfd; | |
429 | Elf_Internal_Note *note; | |
430 | { | |
431 | int offset; | |
432 | size_t raw_size; | |
433 | ||
434 | switch (note->descsz) | |
435 | { | |
436 | default: | |
b34976b6 | 437 | return FALSE; |
38701953 AM |
438 | |
439 | case 144: /* Linux/i386 */ | |
440 | /* pr_cursig */ | |
441 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
442 | ||
443 | /* pr_pid */ | |
444 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
445 | ||
446 | /* pr_reg */ | |
447 | offset = 72; | |
448 | raw_size = 68; | |
449 | ||
450 | break; | |
451 | } | |
452 | ||
453 | /* Make a ".reg/999" section. */ | |
454 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
455 | raw_size, note->descpos + offset); | |
456 | } | |
457 | ||
b34976b6 | 458 | static bfd_boolean |
38701953 AM |
459 | elf_i386_grok_psinfo (abfd, note) |
460 | bfd *abfd; | |
461 | Elf_Internal_Note *note; | |
462 | { | |
463 | switch (note->descsz) | |
464 | { | |
465 | default: | |
b34976b6 | 466 | return FALSE; |
38701953 | 467 | |
fd29389c | 468 | case 124: /* Linux/i386 elf_prpsinfo */ |
38701953 AM |
469 | elf_tdata (abfd)->core_program |
470 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
471 | elf_tdata (abfd)->core_command | |
472 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
473 | } | |
474 | ||
475 | /* Note that for some reason, a spurious space is tacked | |
476 | onto the end of the args in some (at least one anyway) | |
477 | implementations, so strip it off if it exists. */ | |
478 | ||
479 | { | |
480 | char *command = elf_tdata (abfd)->core_command; | |
481 | int n = strlen (command); | |
482 | ||
483 | if (0 < n && command[n - 1] == ' ') | |
484 | command[n - 1] = '\0'; | |
485 | } | |
486 | ||
b34976b6 | 487 | return TRUE; |
38701953 AM |
488 | } |
489 | \f | |
490 | /* Functions for the i386 ELF linker. | |
491 | ||
492 | In order to gain some understanding of code in this file without | |
493 | knowing all the intricate details of the linker, note the | |
494 | following: | |
495 | ||
496 | Functions named elf_i386_* are called by external routines, other | |
497 | functions are only called locally. elf_i386_* functions appear | |
498 | in this file more or less in the order in which they are called | |
499 | from external routines. eg. elf_i386_check_relocs is called | |
500 | early in the link process, elf_i386_finish_dynamic_sections is | |
501 | one of the last functions. */ | |
502 | ||
252b5132 RH |
503 | |
504 | /* The name of the dynamic interpreter. This is put in the .interp | |
505 | section. */ | |
506 | ||
507 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
508 | ||
509 | /* The size in bytes of an entry in the procedure linkage table. */ | |
510 | ||
511 | #define PLT_ENTRY_SIZE 16 | |
512 | ||
513 | /* The first entry in an absolute procedure linkage table looks like | |
514 | this. See the SVR4 ABI i386 supplement to see how this works. */ | |
515 | ||
516 | static const bfd_byte elf_i386_plt0_entry[PLT_ENTRY_SIZE] = | |
517 | { | |
518 | 0xff, 0x35, /* pushl contents of address */ | |
519 | 0, 0, 0, 0, /* replaced with address of .got + 4. */ | |
520 | 0xff, 0x25, /* jmp indirect */ | |
521 | 0, 0, 0, 0, /* replaced with address of .got + 8. */ | |
522 | 0, 0, 0, 0 /* pad out to 16 bytes. */ | |
523 | }; | |
524 | ||
525 | /* Subsequent entries in an absolute procedure linkage table look like | |
526 | this. */ | |
527 | ||
528 | static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] = | |
529 | { | |
530 | 0xff, 0x25, /* jmp indirect */ | |
531 | 0, 0, 0, 0, /* replaced with address of this symbol in .got. */ | |
532 | 0x68, /* pushl immediate */ | |
533 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
534 | 0xe9, /* jmp relative */ | |
535 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
536 | }; | |
537 | ||
538 | /* The first entry in a PIC procedure linkage table look like this. */ | |
539 | ||
540 | static const bfd_byte elf_i386_pic_plt0_entry[PLT_ENTRY_SIZE] = | |
541 | { | |
542 | 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */ | |
543 | 0xff, 0xa3, 8, 0, 0, 0, /* jmp *8(%ebx) */ | |
544 | 0, 0, 0, 0 /* pad out to 16 bytes. */ | |
545 | }; | |
546 | ||
547 | /* Subsequent entries in a PIC procedure linkage table look like this. */ | |
548 | ||
549 | static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] = | |
550 | { | |
551 | 0xff, 0xa3, /* jmp *offset(%ebx) */ | |
552 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
553 | 0x68, /* pushl immediate */ | |
554 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
555 | 0xe9, /* jmp relative */ | |
556 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
557 | }; | |
558 | ||
559 | /* The i386 linker needs to keep track of the number of relocs that it | |
ffb2e45b AM |
560 | decides to copy as dynamic relocs in check_relocs for each symbol. |
561 | This is so that it can later discard them if they are found to be | |
562 | unnecessary. We store the information in a field extending the | |
563 | regular ELF linker hash table. */ | |
252b5132 | 564 | |
ffb2e45b | 565 | struct elf_i386_dyn_relocs |
252b5132 | 566 | { |
ffb2e45b | 567 | struct elf_i386_dyn_relocs *next; |
0c715baa AM |
568 | |
569 | /* The input section of the reloc. */ | |
570 | asection *sec; | |
571 | ||
572 | /* Total number of relocs copied for the input section. */ | |
252b5132 | 573 | bfd_size_type count; |
0c715baa AM |
574 | |
575 | /* Number of pc-relative relocs copied for the input section. */ | |
576 | bfd_size_type pc_count; | |
252b5132 RH |
577 | }; |
578 | ||
579 | /* i386 ELF linker hash entry. */ | |
580 | ||
581 | struct elf_i386_link_hash_entry | |
582 | { | |
ebe50bae | 583 | struct elf_link_hash_entry elf; |
252b5132 | 584 | |
0c715baa | 585 | /* Track dynamic relocs copied for this symbol. */ |
ffb2e45b | 586 | struct elf_i386_dyn_relocs *dyn_relocs; |
13ae64f3 | 587 | |
37e55690 JJ |
588 | #define GOT_UNKNOWN 0 |
589 | #define GOT_NORMAL 1 | |
590 | #define GOT_TLS_GD 2 | |
591 | #define GOT_TLS_IE 4 | |
592 | #define GOT_TLS_IE_POS 5 | |
593 | #define GOT_TLS_IE_NEG 6 | |
594 | #define GOT_TLS_IE_BOTH 7 | |
595 | unsigned char tls_type; | |
13ae64f3 JJ |
596 | }; |
597 | ||
598 | #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent)) | |
599 | ||
600 | struct elf_i386_obj_tdata | |
601 | { | |
602 | struct elf_obj_tdata root; | |
603 | ||
604 | /* tls_type for each local got entry. */ | |
605 | char *local_got_tls_type; | |
252b5132 RH |
606 | }; |
607 | ||
13ae64f3 JJ |
608 | #define elf_i386_tdata(abfd) \ |
609 | ((struct elf_i386_obj_tdata *) (abfd)->tdata.any) | |
610 | ||
611 | #define elf_i386_local_got_tls_type(abfd) \ | |
612 | (elf_i386_tdata (abfd)->local_got_tls_type) | |
613 | ||
b34976b6 | 614 | static bfd_boolean |
13ae64f3 JJ |
615 | elf_i386_mkobject (abfd) |
616 | bfd *abfd; | |
617 | { | |
618 | bfd_size_type amt = sizeof (struct elf_i386_obj_tdata); | |
619 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
620 | if (abfd->tdata.any == NULL) | |
b34976b6 AM |
621 | return FALSE; |
622 | return TRUE; | |
13ae64f3 | 623 | } |
cedb70c5 | 624 | |
b34976b6 | 625 | static bfd_boolean |
13ae64f3 JJ |
626 | elf_i386_object_p (abfd) |
627 | bfd *abfd; | |
628 | { | |
629 | /* Allocate our special target data. */ | |
630 | struct elf_i386_obj_tdata *new_tdata; | |
631 | bfd_size_type amt = sizeof (struct elf_i386_obj_tdata); | |
632 | new_tdata = bfd_zalloc (abfd, amt); | |
633 | if (new_tdata == NULL) | |
b34976b6 | 634 | return FALSE; |
13ae64f3 JJ |
635 | new_tdata->root = *abfd->tdata.elf_obj_data; |
636 | abfd->tdata.any = new_tdata; | |
b34976b6 | 637 | return TRUE; |
13ae64f3 JJ |
638 | } |
639 | ||
252b5132 RH |
640 | /* i386 ELF linker hash table. */ |
641 | ||
642 | struct elf_i386_link_hash_table | |
643 | { | |
ebe50bae | 644 | struct elf_link_hash_table elf; |
252b5132 | 645 | |
6725bdbf AM |
646 | /* Short-cuts to get to dynamic linker sections. */ |
647 | asection *sgot; | |
648 | asection *sgotplt; | |
649 | asection *srelgot; | |
650 | asection *splt; | |
651 | asection *srelplt; | |
652 | asection *sdynbss; | |
653 | asection *srelbss; | |
ec338859 | 654 | |
13ae64f3 JJ |
655 | union { |
656 | bfd_signed_vma refcount; | |
657 | bfd_vma offset; | |
658 | } tls_ldm_got; | |
659 | ||
ec338859 AM |
660 | /* Small local sym to section mapping cache. */ |
661 | struct sym_sec_cache sym_sec; | |
6725bdbf | 662 | }; |
252b5132 RH |
663 | |
664 | /* Get the i386 ELF linker hash table from a link_info structure. */ | |
665 | ||
666 | #define elf_i386_hash_table(p) \ | |
667 | ((struct elf_i386_link_hash_table *) ((p)->hash)) | |
668 | ||
669 | /* Create an entry in an i386 ELF linker hash table. */ | |
670 | ||
671 | static struct bfd_hash_entry * | |
38701953 | 672 | link_hash_newfunc (entry, table, string) |
252b5132 RH |
673 | struct bfd_hash_entry *entry; |
674 | struct bfd_hash_table *table; | |
675 | const char *string; | |
676 | { | |
252b5132 RH |
677 | /* Allocate the structure if it has not already been allocated by a |
678 | subclass. */ | |
ebe50bae AM |
679 | if (entry == NULL) |
680 | { | |
681 | entry = bfd_hash_allocate (table, | |
682 | sizeof (struct elf_i386_link_hash_entry)); | |
683 | if (entry == NULL) | |
684 | return entry; | |
685 | } | |
252b5132 RH |
686 | |
687 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
688 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
689 | if (entry != NULL) | |
252b5132 | 690 | { |
ebe50bae AM |
691 | struct elf_i386_link_hash_entry *eh; |
692 | ||
693 | eh = (struct elf_i386_link_hash_entry *) entry; | |
694 | eh->dyn_relocs = NULL; | |
13ae64f3 | 695 | eh->tls_type = GOT_UNKNOWN; |
252b5132 RH |
696 | } |
697 | ||
ebe50bae | 698 | return entry; |
252b5132 RH |
699 | } |
700 | ||
701 | /* Create an i386 ELF linker hash table. */ | |
702 | ||
703 | static struct bfd_link_hash_table * | |
704 | elf_i386_link_hash_table_create (abfd) | |
705 | bfd *abfd; | |
706 | { | |
707 | struct elf_i386_link_hash_table *ret; | |
dc810e39 | 708 | bfd_size_type amt = sizeof (struct elf_i386_link_hash_table); |
252b5132 | 709 | |
e2d34d7d | 710 | ret = (struct elf_i386_link_hash_table *) bfd_malloc (amt); |
ebe50bae | 711 | if (ret == NULL) |
252b5132 RH |
712 | return NULL; |
713 | ||
ebe50bae | 714 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc)) |
252b5132 | 715 | { |
e2d34d7d | 716 | free (ret); |
252b5132 RH |
717 | return NULL; |
718 | } | |
719 | ||
6725bdbf AM |
720 | ret->sgot = NULL; |
721 | ret->sgotplt = NULL; | |
722 | ret->srelgot = NULL; | |
723 | ret->splt = NULL; | |
724 | ret->srelplt = NULL; | |
725 | ret->sdynbss = NULL; | |
726 | ret->srelbss = NULL; | |
7a624474 | 727 | ret->tls_ldm_got.refcount = 0; |
ec338859 | 728 | ret->sym_sec.abfd = NULL; |
6725bdbf | 729 | |
ebe50bae | 730 | return &ret->elf.root; |
252b5132 RH |
731 | } |
732 | ||
6725bdbf AM |
733 | /* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up |
734 | shortcuts to them in our hash table. */ | |
735 | ||
b34976b6 | 736 | static bfd_boolean |
6725bdbf AM |
737 | create_got_section (dynobj, info) |
738 | bfd *dynobj; | |
739 | struct bfd_link_info *info; | |
740 | { | |
741 | struct elf_i386_link_hash_table *htab; | |
742 | ||
743 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 744 | return FALSE; |
6725bdbf AM |
745 | |
746 | htab = elf_i386_hash_table (info); | |
747 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
748 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
749 | if (!htab->sgot || !htab->sgotplt) | |
750 | abort (); | |
751 | ||
752 | htab->srelgot = bfd_make_section (dynobj, ".rel.got"); | |
753 | if (htab->srelgot == NULL | |
754 | || ! bfd_set_section_flags (dynobj, htab->srelgot, | |
755 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
756 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
757 | | SEC_READONLY)) | |
758 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) | |
b34976b6 AM |
759 | return FALSE; |
760 | return TRUE; | |
6725bdbf AM |
761 | } |
762 | ||
763 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and | |
764 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
765 | hash table. */ | |
766 | ||
b34976b6 | 767 | static bfd_boolean |
6725bdbf AM |
768 | elf_i386_create_dynamic_sections (dynobj, info) |
769 | bfd *dynobj; | |
770 | struct bfd_link_info *info; | |
771 | { | |
772 | struct elf_i386_link_hash_table *htab; | |
773 | ||
774 | htab = elf_i386_hash_table (info); | |
775 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
b34976b6 | 776 | return FALSE; |
6725bdbf AM |
777 | |
778 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 779 | return FALSE; |
6725bdbf AM |
780 | |
781 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
782 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt"); | |
783 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
784 | if (!info->shared) | |
785 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
786 | ||
787 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
788 | || (!info->shared && !htab->srelbss)) | |
789 | abort (); | |
790 | ||
b34976b6 | 791 | return TRUE; |
6725bdbf AM |
792 | } |
793 | ||
ebe50bae AM |
794 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
795 | ||
51b64d56 | 796 | static void |
b48fa14c AM |
797 | elf_i386_copy_indirect_symbol (bed, dir, ind) |
798 | struct elf_backend_data *bed; | |
ebe50bae AM |
799 | struct elf_link_hash_entry *dir, *ind; |
800 | { | |
801 | struct elf_i386_link_hash_entry *edir, *eind; | |
802 | ||
803 | edir = (struct elf_i386_link_hash_entry *) dir; | |
804 | eind = (struct elf_i386_link_hash_entry *) ind; | |
805 | ||
bbd7ec4a | 806 | if (eind->dyn_relocs != NULL) |
ebe50bae | 807 | { |
bbd7ec4a AM |
808 | if (edir->dyn_relocs != NULL) |
809 | { | |
810 | struct elf_i386_dyn_relocs **pp; | |
811 | struct elf_i386_dyn_relocs *p; | |
812 | ||
1e370bd2 | 813 | if (ind->root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
814 | abort (); |
815 | ||
816 | /* Add reloc counts against the weak sym to the strong sym | |
817 | list. Merge any entries against the same section. */ | |
818 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
819 | { | |
820 | struct elf_i386_dyn_relocs *q; | |
821 | ||
822 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
823 | if (q->sec == p->sec) | |
824 | { | |
825 | q->pc_count += p->pc_count; | |
826 | q->count += p->count; | |
827 | *pp = p->next; | |
828 | break; | |
829 | } | |
830 | if (q == NULL) | |
831 | pp = &p->next; | |
832 | } | |
833 | *pp = edir->dyn_relocs; | |
834 | } | |
835 | ||
ebe50bae AM |
836 | edir->dyn_relocs = eind->dyn_relocs; |
837 | eind->dyn_relocs = NULL; | |
838 | } | |
ebe50bae | 839 | |
cd67d266 JJ |
840 | if (ind->root.type == bfd_link_hash_indirect |
841 | && dir->got.refcount <= 0) | |
842 | { | |
843 | edir->tls_type = eind->tls_type; | |
844 | eind->tls_type = GOT_UNKNOWN; | |
845 | } | |
b48fa14c | 846 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); |
ebe50bae AM |
847 | } |
848 | ||
13ae64f3 JJ |
849 | static int |
850 | elf_i386_tls_transition (info, r_type, is_local) | |
851 | struct bfd_link_info *info; | |
852 | int r_type; | |
853 | int is_local; | |
854 | { | |
855 | if (info->shared) | |
856 | return r_type; | |
857 | ||
858 | switch (r_type) | |
859 | { | |
860 | case R_386_TLS_GD: | |
861 | case R_386_TLS_IE_32: | |
862 | if (is_local) | |
863 | return R_386_TLS_LE_32; | |
864 | return R_386_TLS_IE_32; | |
37e55690 JJ |
865 | case R_386_TLS_IE: |
866 | case R_386_TLS_GOTIE: | |
867 | if (is_local) | |
868 | return R_386_TLS_LE_32; | |
869 | return r_type; | |
13ae64f3 JJ |
870 | case R_386_TLS_LDM: |
871 | return R_386_TLS_LE_32; | |
872 | } | |
873 | ||
874 | return r_type; | |
875 | } | |
876 | ||
252b5132 | 877 | /* Look through the relocs for a section during the first phase, and |
0ac8d2ca AM |
878 | calculate needed space in the global offset table, procedure linkage |
879 | table, and dynamic reloc sections. */ | |
252b5132 | 880 | |
b34976b6 | 881 | static bfd_boolean |
252b5132 RH |
882 | elf_i386_check_relocs (abfd, info, sec, relocs) |
883 | bfd *abfd; | |
884 | struct bfd_link_info *info; | |
885 | asection *sec; | |
886 | const Elf_Internal_Rela *relocs; | |
887 | { | |
6725bdbf | 888 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
889 | Elf_Internal_Shdr *symtab_hdr; |
890 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
891 | const Elf_Internal_Rela *rel; |
892 | const Elf_Internal_Rela *rel_end; | |
252b5132 RH |
893 | asection *sreloc; |
894 | ||
895 | if (info->relocateable) | |
b34976b6 | 896 | return TRUE; |
252b5132 | 897 | |
6725bdbf | 898 | htab = elf_i386_hash_table (info); |
252b5132 RH |
899 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
900 | sym_hashes = elf_sym_hashes (abfd); | |
252b5132 | 901 | |
252b5132 RH |
902 | sreloc = NULL; |
903 | ||
904 | rel_end = relocs + sec->reloc_count; | |
905 | for (rel = relocs; rel < rel_end; rel++) | |
906 | { | |
13ae64f3 | 907 | unsigned int r_type; |
252b5132 RH |
908 | unsigned long r_symndx; |
909 | struct elf_link_hash_entry *h; | |
910 | ||
911 | r_symndx = ELF32_R_SYM (rel->r_info); | |
13ae64f3 | 912 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 913 | |
d9bc7a44 | 914 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
f5f31454 | 915 | { |
8f615d07 AM |
916 | (*_bfd_error_handler) (_("%s: bad symbol index: %d"), |
917 | bfd_archive_filename (abfd), | |
918 | r_symndx); | |
b34976b6 | 919 | return FALSE; |
f5f31454 L |
920 | } |
921 | ||
252b5132 RH |
922 | if (r_symndx < symtab_hdr->sh_info) |
923 | h = NULL; | |
924 | else | |
925 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
926 | ||
13ae64f3 JJ |
927 | r_type = elf_i386_tls_transition (info, r_type, h == NULL); |
928 | ||
929 | switch (r_type) | |
252b5132 | 930 | { |
37e55690 JJ |
931 | case R_386_TLS_LDM: |
932 | htab->tls_ldm_got.refcount += 1; | |
933 | goto create_got; | |
934 | ||
935 | case R_386_PLT32: | |
936 | /* This symbol requires a procedure linkage table entry. We | |
937 | actually build the entry in adjust_dynamic_symbol, | |
938 | because this might be a case of linking PIC code which is | |
939 | never referenced by a dynamic object, in which case we | |
940 | don't need to generate a procedure linkage table entry | |
941 | after all. */ | |
942 | ||
943 | /* If this is a local symbol, we resolve it directly without | |
944 | creating a procedure linkage table entry. */ | |
945 | if (h == NULL) | |
946 | continue; | |
947 | ||
948 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
949 | h->plt.refcount += 1; | |
950 | break; | |
951 | ||
13ae64f3 | 952 | case R_386_TLS_IE_32: |
37e55690 JJ |
953 | case R_386_TLS_IE: |
954 | case R_386_TLS_GOTIE: | |
13ae64f3 JJ |
955 | if (info->shared) |
956 | info->flags |= DF_STATIC_TLS; | |
37e55690 JJ |
957 | /* Fall through */ |
958 | ||
252b5132 | 959 | case R_386_GOT32: |
13ae64f3 | 960 | case R_386_TLS_GD: |
252b5132 | 961 | /* This symbol requires a global offset table entry. */ |
13ae64f3 JJ |
962 | { |
963 | int tls_type, old_tls_type; | |
964 | ||
965 | switch (r_type) | |
966 | { | |
967 | default: | |
968 | case R_386_GOT32: tls_type = GOT_NORMAL; break; | |
969 | case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; | |
37e55690 JJ |
970 | case R_386_TLS_IE_32: |
971 | if (ELF32_R_TYPE (rel->r_info) == r_type) | |
972 | tls_type = GOT_TLS_IE_NEG; | |
973 | else | |
974 | /* If this is a GD->IE transition, we may use either of | |
975 | R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ | |
976 | tls_type = GOT_TLS_IE; | |
977 | break; | |
978 | case R_386_TLS_IE: | |
979 | case R_386_TLS_GOTIE: | |
980 | tls_type = GOT_TLS_IE_POS; break; | |
13ae64f3 JJ |
981 | } |
982 | ||
983 | if (h != NULL) | |
984 | { | |
985 | h->got.refcount += 1; | |
986 | old_tls_type = elf_i386_hash_entry(h)->tls_type; | |
987 | } | |
988 | else | |
989 | { | |
990 | bfd_signed_vma *local_got_refcounts; | |
991 | ||
992 | /* This is a global offset table entry for a local symbol. */ | |
993 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
994 | if (local_got_refcounts == NULL) | |
995 | { | |
996 | bfd_size_type size; | |
997 | ||
998 | size = symtab_hdr->sh_info; | |
999 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); | |
1000 | local_got_refcounts = ((bfd_signed_vma *) | |
1001 | bfd_zalloc (abfd, size)); | |
1002 | if (local_got_refcounts == NULL) | |
b34976b6 | 1003 | return FALSE; |
13ae64f3 JJ |
1004 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
1005 | elf_i386_local_got_tls_type (abfd) | |
1006 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
1007 | } | |
1008 | local_got_refcounts[r_symndx] += 1; | |
1009 | old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx]; | |
1010 | } | |
1011 | ||
37e55690 JJ |
1012 | if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) |
1013 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1014 | /* If a TLS symbol is accessed using IE at least once, |
1015 | there is no point to use dynamic model for it. */ | |
37e55690 JJ |
1016 | else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
1017 | && (old_tls_type != GOT_TLS_GD | |
1018 | || (tls_type & GOT_TLS_IE) == 0)) | |
13ae64f3 | 1019 | { |
37e55690 JJ |
1020 | if ((old_tls_type & GOT_TLS_IE) && tls_type == GOT_TLS_GD) |
1021 | tls_type = old_tls_type; | |
13ae64f3 JJ |
1022 | else |
1023 | { | |
1024 | (*_bfd_error_handler) | |
1025 | (_("%s: `%s' accessed both as normal and thread local symbol"), | |
37e55690 JJ |
1026 | bfd_archive_filename (abfd), |
1027 | h ? h->root.root.string : "<local>"); | |
b34976b6 | 1028 | return FALSE; |
13ae64f3 JJ |
1029 | } |
1030 | } | |
1031 | ||
1032 | if (old_tls_type != tls_type) | |
1033 | { | |
1034 | if (h != NULL) | |
1035 | elf_i386_hash_entry (h)->tls_type = tls_type; | |
1036 | else | |
1037 | elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1038 | } | |
1039 | } | |
0ac8d2ca AM |
1040 | /* Fall through */ |
1041 | ||
1042 | case R_386_GOTOFF: | |
1043 | case R_386_GOTPC: | |
13ae64f3 | 1044 | create_got: |
0ac8d2ca AM |
1045 | if (htab->sgot == NULL) |
1046 | { | |
1047 | if (htab->elf.dynobj == NULL) | |
1048 | htab->elf.dynobj = abfd; | |
1049 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 1050 | return FALSE; |
0ac8d2ca | 1051 | } |
37e55690 JJ |
1052 | if (r_type != R_386_TLS_IE) |
1053 | break; | |
1054 | /* Fall through */ | |
252b5132 | 1055 | |
37e55690 JJ |
1056 | case R_386_TLS_LE_32: |
1057 | case R_386_TLS_LE: | |
1058 | if (!info->shared) | |
1059 | break; | |
bffbf940 | 1060 | info->flags |= DF_STATIC_TLS; |
b34976b6 | 1061 | /* Fall through */ |
252b5132 RH |
1062 | |
1063 | case R_386_32: | |
1064 | case R_386_PC32: | |
12d0ee4a | 1065 | if (h != NULL && !info->shared) |
6725bdbf | 1066 | { |
12d0ee4a | 1067 | /* If this reloc is in a read-only section, we might |
ebe50bae AM |
1068 | need a copy reloc. We can't check reliably at this |
1069 | stage whether the section is read-only, as input | |
1070 | sections have not yet been mapped to output sections. | |
1071 | Tentatively set the flag for now, and correct in | |
1072 | adjust_dynamic_symbol. */ | |
1073 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
12d0ee4a AM |
1074 | |
1075 | /* We may need a .plt entry if the function this reloc | |
1076 | refers to is in a shared lib. */ | |
51b64d56 | 1077 | h->plt.refcount += 1; |
6725bdbf | 1078 | } |
7843f00e | 1079 | |
252b5132 | 1080 | /* If we are creating a shared library, and this is a reloc |
f69da49f AM |
1081 | against a global symbol, or a non PC relative reloc |
1082 | against a local symbol, then we need to copy the reloc | |
1083 | into the shared library. However, if we are linking with | |
1084 | -Bsymbolic, we do not need to copy a reloc against a | |
1085 | global symbol which is defined in an object we are | |
1086 | including in the link (i.e., DEF_REGULAR is set). At | |
1087 | this point we have not seen all the input files, so it is | |
1088 | possible that DEF_REGULAR is not set now but will be set | |
1f655a09 L |
1089 | later (it is never cleared). In case of a weak definition, |
1090 | DEF_REGULAR may be cleared later by a strong definition in | |
ebe50bae | 1091 | a shared library. We account for that possibility below by |
1f655a09 L |
1092 | storing information in the relocs_copied field of the hash |
1093 | table entry. A similar situation occurs when creating | |
1094 | shared libraries and symbol visibility changes render the | |
12d0ee4a | 1095 | symbol local. |
56882138 | 1096 | |
12d0ee4a AM |
1097 | If on the other hand, we are creating an executable, we |
1098 | may need to keep relocations for symbols satisfied by a | |
1099 | dynamic library if we manage to avoid copy relocs for the | |
1100 | symbol. */ | |
1101 | if ((info->shared | |
1102 | && (sec->flags & SEC_ALLOC) != 0 | |
13ae64f3 | 1103 | && (r_type != R_386_PC32 |
12d0ee4a AM |
1104 | || (h != NULL |
1105 | && (! info->symbolic | |
1106 | || h->root.type == bfd_link_hash_defweak | |
1107 | || (h->elf_link_hash_flags | |
1108 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
1109 | || (!info->shared | |
1110 | && (sec->flags & SEC_ALLOC) != 0 | |
1111 | && h != NULL | |
12d0ee4a AM |
1112 | && (h->root.type == bfd_link_hash_defweak |
1113 | || (h->elf_link_hash_flags | |
1114 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
252b5132 | 1115 | { |
ec338859 AM |
1116 | struct elf_i386_dyn_relocs *p; |
1117 | struct elf_i386_dyn_relocs **head; | |
1118 | ||
12d0ee4a AM |
1119 | /* We must copy these reloc types into the output file. |
1120 | Create a reloc section in dynobj and make room for | |
1121 | this reloc. */ | |
252b5132 RH |
1122 | if (sreloc == NULL) |
1123 | { | |
1124 | const char *name; | |
0ac8d2ca | 1125 | bfd *dynobj; |
e92d460e AM |
1126 | unsigned int strndx = elf_elfheader (abfd)->e_shstrndx; |
1127 | unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name; | |
252b5132 | 1128 | |
e92d460e | 1129 | name = bfd_elf_string_from_elf_section (abfd, strndx, shnam); |
252b5132 | 1130 | if (name == NULL) |
b34976b6 | 1131 | return FALSE; |
252b5132 | 1132 | |
c8492176 L |
1133 | if (strncmp (name, ".rel", 4) != 0 |
1134 | || strcmp (bfd_get_section_name (abfd, sec), | |
1135 | name + 4) != 0) | |
1136 | { | |
0c715baa AM |
1137 | (*_bfd_error_handler) |
1138 | (_("%s: bad relocation section name `%s\'"), | |
1139 | bfd_archive_filename (abfd), name); | |
f5f31454 | 1140 | } |
252b5132 | 1141 | |
0ac8d2ca AM |
1142 | if (htab->elf.dynobj == NULL) |
1143 | htab->elf.dynobj = abfd; | |
1144 | ||
1145 | dynobj = htab->elf.dynobj; | |
252b5132 RH |
1146 | sreloc = bfd_get_section_by_name (dynobj, name); |
1147 | if (sreloc == NULL) | |
1148 | { | |
1149 | flagword flags; | |
1150 | ||
1151 | sreloc = bfd_make_section (dynobj, name); | |
1152 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
1153 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1154 | if ((sec->flags & SEC_ALLOC) != 0) | |
1155 | flags |= SEC_ALLOC | SEC_LOAD; | |
1156 | if (sreloc == NULL | |
1157 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
1158 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 1159 | return FALSE; |
252b5132 | 1160 | } |
0c715baa | 1161 | elf_section_data (sec)->sreloc = sreloc; |
252b5132 RH |
1162 | } |
1163 | ||
0c715baa AM |
1164 | /* If this is a global symbol, we count the number of |
1165 | relocations we need for this symbol. */ | |
1166 | if (h != NULL) | |
252b5132 | 1167 | { |
ec338859 | 1168 | head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs; |
0c715baa AM |
1169 | } |
1170 | else | |
1171 | { | |
ec338859 AM |
1172 | /* Track dynamic relocs needed for local syms too. |
1173 | We really need local syms available to do this | |
1174 | easily. Oh well. */ | |
1175 | ||
1176 | asection *s; | |
1177 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
1178 | sec, r_symndx); | |
1179 | if (s == NULL) | |
b34976b6 | 1180 | return FALSE; |
ec338859 AM |
1181 | |
1182 | head = ((struct elf_i386_dyn_relocs **) | |
1183 | &elf_section_data (s)->local_dynrel); | |
1184 | } | |
1185 | ||
1186 | p = *head; | |
1187 | if (p == NULL || p->sec != sec) | |
1188 | { | |
1189 | bfd_size_type amt = sizeof *p; | |
1190 | p = ((struct elf_i386_dyn_relocs *) | |
1191 | bfd_alloc (htab->elf.dynobj, amt)); | |
1192 | if (p == NULL) | |
b34976b6 | 1193 | return FALSE; |
ec338859 AM |
1194 | p->next = *head; |
1195 | *head = p; | |
1196 | p->sec = sec; | |
1197 | p->count = 0; | |
1198 | p->pc_count = 0; | |
252b5132 | 1199 | } |
ec338859 AM |
1200 | |
1201 | p->count += 1; | |
13ae64f3 | 1202 | if (r_type == R_386_PC32) |
ec338859 | 1203 | p->pc_count += 1; |
252b5132 | 1204 | } |
252b5132 RH |
1205 | break; |
1206 | ||
1207 | /* This relocation describes the C++ object vtable hierarchy. | |
1208 | Reconstruct it for later use during GC. */ | |
1209 | case R_386_GNU_VTINHERIT: | |
1210 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1211 | return FALSE; |
252b5132 RH |
1212 | break; |
1213 | ||
1214 | /* This relocation describes which C++ vtable entries are actually | |
1215 | used. Record for later use during GC. */ | |
1216 | case R_386_GNU_VTENTRY: | |
1217 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1218 | return FALSE; |
252b5132 RH |
1219 | break; |
1220 | ||
1221 | default: | |
1222 | break; | |
1223 | } | |
1224 | } | |
1225 | ||
b34976b6 | 1226 | return TRUE; |
252b5132 RH |
1227 | } |
1228 | ||
1229 | /* Return the section that should be marked against GC for a given | |
1230 | relocation. */ | |
1231 | ||
1232 | static asection * | |
1e2f5b6e AM |
1233 | elf_i386_gc_mark_hook (sec, info, rel, h, sym) |
1234 | asection *sec; | |
7442e600 | 1235 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1236 | Elf_Internal_Rela *rel; |
1237 | struct elf_link_hash_entry *h; | |
1238 | Elf_Internal_Sym *sym; | |
1239 | { | |
1240 | if (h != NULL) | |
1241 | { | |
1242 | switch (ELF32_R_TYPE (rel->r_info)) | |
1243 | { | |
1244 | case R_386_GNU_VTINHERIT: | |
1245 | case R_386_GNU_VTENTRY: | |
1246 | break; | |
1247 | ||
1248 | default: | |
1249 | switch (h->root.type) | |
1250 | { | |
1251 | case bfd_link_hash_defined: | |
1252 | case bfd_link_hash_defweak: | |
1253 | return h->root.u.def.section; | |
1254 | ||
1255 | case bfd_link_hash_common: | |
1256 | return h->root.u.c.p->section; | |
1257 | ||
1258 | default: | |
1259 | break; | |
1260 | } | |
1261 | } | |
1262 | } | |
1263 | else | |
1e2f5b6e | 1264 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
1265 | |
1266 | return NULL; | |
1267 | } | |
1268 | ||
1269 | /* Update the got entry reference counts for the section being removed. */ | |
1270 | ||
b34976b6 | 1271 | static bfd_boolean |
252b5132 | 1272 | elf_i386_gc_sweep_hook (abfd, info, sec, relocs) |
dd5724d5 | 1273 | bfd *abfd; |
6725bdbf | 1274 | struct bfd_link_info *info; |
dd5724d5 AM |
1275 | asection *sec; |
1276 | const Elf_Internal_Rela *relocs; | |
252b5132 | 1277 | { |
dd5724d5 AM |
1278 | Elf_Internal_Shdr *symtab_hdr; |
1279 | struct elf_link_hash_entry **sym_hashes; | |
1280 | bfd_signed_vma *local_got_refcounts; | |
1281 | const Elf_Internal_Rela *rel, *relend; | |
dd5724d5 | 1282 | |
ec338859 | 1283 | elf_section_data (sec)->local_dynrel = NULL; |
dd5724d5 | 1284 | |
6725bdbf AM |
1285 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1286 | sym_hashes = elf_sym_hashes (abfd); | |
1287 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
dd5724d5 AM |
1288 | |
1289 | relend = relocs + sec->reloc_count; | |
1290 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1291 | { |
1292 | unsigned long r_symndx; | |
1293 | unsigned int r_type; | |
1294 | struct elf_link_hash_entry *h = NULL; | |
37e55690 | 1295 | |
26e41594 AM |
1296 | r_symndx = ELF32_R_SYM (rel->r_info); |
1297 | if (r_symndx >= symtab_hdr->sh_info) | |
1298 | { | |
1299 | struct elf_i386_link_hash_entry *eh; | |
1300 | struct elf_i386_dyn_relocs **pp; | |
1301 | struct elf_i386_dyn_relocs *p; | |
dd5724d5 | 1302 | |
26e41594 AM |
1303 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1304 | eh = (struct elf_i386_link_hash_entry *) h; | |
0c715baa | 1305 | |
26e41594 AM |
1306 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1307 | if (p->sec == sec) | |
1308 | { | |
1309 | /* Everything must go for SEC. */ | |
1310 | *pp = p->next; | |
1311 | break; | |
1312 | } | |
1313 | } | |
0c715baa | 1314 | |
26e41594 AM |
1315 | r_type = ELF32_R_TYPE (rel->r_info); |
1316 | r_type = elf_i386_tls_transition (info, r_type, h != NULL); | |
1317 | switch (r_type) | |
1318 | { | |
1319 | case R_386_TLS_LDM: | |
1320 | if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0) | |
1321 | elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1; | |
1322 | break; | |
0c715baa | 1323 | |
26e41594 AM |
1324 | case R_386_TLS_GD: |
1325 | case R_386_TLS_IE_32: | |
1326 | case R_386_TLS_IE: | |
1327 | case R_386_TLS_GOTIE: | |
1328 | case R_386_GOT32: | |
1329 | if (h != NULL) | |
1330 | { | |
1331 | if (h->got.refcount > 0) | |
1332 | h->got.refcount -= 1; | |
1333 | } | |
1334 | else if (local_got_refcounts != NULL) | |
1335 | { | |
1336 | if (local_got_refcounts[r_symndx] > 0) | |
1337 | local_got_refcounts[r_symndx] -= 1; | |
1338 | } | |
1339 | break; | |
0c715baa | 1340 | |
26e41594 AM |
1341 | case R_386_32: |
1342 | case R_386_PC32: | |
1343 | if (info->shared) | |
1344 | break; | |
1345 | /* Fall through */ | |
6725bdbf | 1346 | |
26e41594 AM |
1347 | case R_386_PLT32: |
1348 | if (h != NULL) | |
1349 | { | |
1350 | if (h->plt.refcount > 0) | |
1351 | h->plt.refcount -= 1; | |
1352 | } | |
1353 | break; | |
dd5724d5 | 1354 | |
26e41594 AM |
1355 | default: |
1356 | break; | |
1357 | } | |
1358 | } | |
252b5132 | 1359 | |
b34976b6 | 1360 | return TRUE; |
252b5132 RH |
1361 | } |
1362 | ||
1363 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1364 | regular object. The current definition is in some section of the | |
1365 | dynamic object, but we're not including those sections. We have to | |
1366 | change the definition to something the rest of the link can | |
1367 | understand. */ | |
1368 | ||
b34976b6 | 1369 | static bfd_boolean |
252b5132 RH |
1370 | elf_i386_adjust_dynamic_symbol (info, h) |
1371 | struct bfd_link_info *info; | |
1372 | struct elf_link_hash_entry *h; | |
1373 | { | |
6725bdbf | 1374 | struct elf_i386_link_hash_table *htab; |
ebe50bae AM |
1375 | struct elf_i386_link_hash_entry * eh; |
1376 | struct elf_i386_dyn_relocs *p; | |
252b5132 RH |
1377 | asection *s; |
1378 | unsigned int power_of_two; | |
1379 | ||
252b5132 RH |
1380 | /* If this is a function, put it in the procedure linkage table. We |
1381 | will fill in the contents of the procedure linkage table later, | |
1382 | when we know the address of the .got section. */ | |
1383 | if (h->type == STT_FUNC | |
1384 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1385 | { | |
6725bdbf AM |
1386 | if (h->plt.refcount <= 0 |
1387 | || (! info->shared | |
1388 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 | |
f9cd9119 MS |
1389 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0 |
1390 | && h->root.type != bfd_link_hash_undefweak | |
1391 | && h->root.type != bfd_link_hash_undefined)) | |
252b5132 RH |
1392 | { |
1393 | /* This case can occur if we saw a PLT32 reloc in an input | |
dd5724d5 AM |
1394 | file, but the symbol was never referred to by a dynamic |
1395 | object, or if all references were garbage collected. In | |
1396 | such a case, we don't actually need to build a procedure | |
1397 | linkage table, and we can just do a PC32 reloc instead. */ | |
bbd7ec4a | 1398 | h->plt.offset = (bfd_vma) -1; |
dd5724d5 | 1399 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
252b5132 RH |
1400 | } |
1401 | ||
b34976b6 | 1402 | return TRUE; |
252b5132 | 1403 | } |
6725bdbf AM |
1404 | else |
1405 | /* It's possible that we incorrectly decided a .plt reloc was | |
1406 | needed for an R_386_PC32 reloc to a non-function sym in | |
1407 | check_relocs. We can't decide accurately between function and | |
1408 | non-function syms in check-relocs; Objects loaded later in | |
1409 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1410 | h->plt.offset = (bfd_vma) -1; |
252b5132 RH |
1411 | |
1412 | /* If this is a weak symbol, and there is a real definition, the | |
1413 | processor independent code will have arranged for us to see the | |
1414 | real definition first, and we can just use the same value. */ | |
1415 | if (h->weakdef != NULL) | |
1416 | { | |
1417 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1418 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1419 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1420 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
b34976b6 | 1421 | return TRUE; |
252b5132 RH |
1422 | } |
1423 | ||
1424 | /* This is a reference to a symbol defined by a dynamic object which | |
1425 | is not a function. */ | |
1426 | ||
1427 | /* If we are creating a shared library, we must presume that the | |
1428 | only references to the symbol are via the global offset table. | |
1429 | For such cases we need not do anything here; the relocations will | |
1430 | be handled correctly by relocate_section. */ | |
1431 | if (info->shared) | |
b34976b6 | 1432 | return TRUE; |
252b5132 | 1433 | |
7843f00e ILT |
1434 | /* If there are no references to this symbol that do not use the |
1435 | GOT, we don't need to generate a copy reloc. */ | |
1436 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
b34976b6 | 1437 | return TRUE; |
7843f00e | 1438 | |
8bd621d8 AM |
1439 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1440 | if (info->nocopyreloc) | |
1441 | { | |
1442 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
b34976b6 | 1443 | return TRUE; |
8bd621d8 AM |
1444 | } |
1445 | ||
ebe50bae AM |
1446 | eh = (struct elf_i386_link_hash_entry *) h; |
1447 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1448 | { | |
1449 | s = p->sec->output_section; | |
1450 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1451 | break; | |
1452 | } | |
1453 | ||
1454 | /* If we didn't find any dynamic relocs in read-only sections, then | |
cedb70c5 | 1455 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
ebe50bae AM |
1456 | if (p == NULL) |
1457 | { | |
1458 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
b34976b6 | 1459 | return TRUE; |
ebe50bae AM |
1460 | } |
1461 | ||
252b5132 RH |
1462 | /* We must allocate the symbol in our .dynbss section, which will |
1463 | become part of the .bss section of the executable. There will be | |
1464 | an entry for this symbol in the .dynsym section. The dynamic | |
1465 | object will contain position independent code, so all references | |
1466 | from the dynamic object to this symbol will go through the global | |
1467 | offset table. The dynamic linker will use the .dynsym entry to | |
1468 | determine the address it must put in the global offset table, so | |
1469 | both the dynamic object and the regular object will refer to the | |
1470 | same memory location for the variable. */ | |
1471 | ||
0ac8d2ca | 1472 | htab = elf_i386_hash_table (info); |
252b5132 RH |
1473 | |
1474 | /* We must generate a R_386_COPY reloc to tell the dynamic linker to | |
1475 | copy the initial value out of the dynamic object and into the | |
0ac8d2ca | 1476 | runtime process image. */ |
252b5132 RH |
1477 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1478 | { | |
0ac8d2ca | 1479 | htab->srelbss->_raw_size += sizeof (Elf32_External_Rel); |
252b5132 RH |
1480 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
1481 | } | |
1482 | ||
1483 | /* We need to figure out the alignment required for this symbol. I | |
1484 | have no idea how ELF linkers handle this. */ | |
1485 | power_of_two = bfd_log2 (h->size); | |
1486 | if (power_of_two > 3) | |
1487 | power_of_two = 3; | |
1488 | ||
1489 | /* Apply the required alignment. */ | |
0ac8d2ca AM |
1490 | s = htab->sdynbss; |
1491 | s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two)); | |
1492 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
252b5132 | 1493 | { |
0ac8d2ca | 1494 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 1495 | return FALSE; |
252b5132 RH |
1496 | } |
1497 | ||
1498 | /* Define the symbol as being at this point in the section. */ | |
1499 | h->root.u.def.section = s; | |
1500 | h->root.u.def.value = s->_raw_size; | |
1501 | ||
1502 | /* Increment the section size to make room for the symbol. */ | |
1503 | s->_raw_size += h->size; | |
1504 | ||
b34976b6 | 1505 | return TRUE; |
252b5132 RH |
1506 | } |
1507 | ||
6725bdbf AM |
1508 | /* This is the condition under which elf_i386_finish_dynamic_symbol |
1509 | will be called from elflink.h. If elflink.h doesn't call our | |
1510 | finish_dynamic_symbol routine, we'll need to do something about | |
1511 | initializing any .plt and .got entries in elf_i386_relocate_section. */ | |
26e41594 | 1512 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ |
6725bdbf | 1513 | ((DYN) \ |
26e41594 | 1514 | && ((SHARED) \ |
6725bdbf AM |
1515 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ |
1516 | && ((H)->dynindx != -1 \ | |
1517 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
1518 | ||
1519 | /* Allocate space in .plt, .got and associated reloc sections for | |
0c715baa | 1520 | dynamic relocs. */ |
6725bdbf | 1521 | |
b34976b6 | 1522 | static bfd_boolean |
0c715baa | 1523 | allocate_dynrelocs (h, inf) |
6725bdbf AM |
1524 | struct elf_link_hash_entry *h; |
1525 | PTR inf; | |
1526 | { | |
1527 | struct bfd_link_info *info; | |
1528 | struct elf_i386_link_hash_table *htab; | |
5a15f56f | 1529 | struct elf_i386_link_hash_entry *eh; |
0c715baa | 1530 | struct elf_i386_dyn_relocs *p; |
6725bdbf | 1531 | |
e92d460e | 1532 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1533 | return TRUE; |
6725bdbf | 1534 | |
e92d460e AM |
1535 | if (h->root.type == bfd_link_hash_warning) |
1536 | /* When warning symbols are created, they **replace** the "real" | |
1537 | entry in the hash table, thus we never get to see the real | |
1538 | symbol in a hash traversal. So look at it now. */ | |
1539 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1540 | ||
6725bdbf AM |
1541 | info = (struct bfd_link_info *) inf; |
1542 | htab = elf_i386_hash_table (info); | |
1543 | ||
ebe50bae | 1544 | if (htab->elf.dynamic_sections_created |
6725bdbf AM |
1545 | && h->plt.refcount > 0) |
1546 | { | |
5a15f56f AM |
1547 | /* Make sure this symbol is output as a dynamic symbol. |
1548 | Undefined weak syms won't yet be marked as dynamic. */ | |
1549 | if (h->dynindx == -1 | |
1550 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1551 | { | |
1552 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1553 | return FALSE; |
5a15f56f AM |
1554 | } |
1555 | ||
26e41594 AM |
1556 | if (info->shared |
1557 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
ced53ee5 | 1558 | { |
0ac8d2ca | 1559 | asection *s = htab->splt; |
6725bdbf | 1560 | |
ced53ee5 AM |
1561 | /* If this is the first .plt entry, make room for the special |
1562 | first entry. */ | |
1563 | if (s->_raw_size == 0) | |
1564 | s->_raw_size += PLT_ENTRY_SIZE; | |
6725bdbf | 1565 | |
ced53ee5 | 1566 | h->plt.offset = s->_raw_size; |
6725bdbf | 1567 | |
ced53ee5 AM |
1568 | /* If this symbol is not defined in a regular file, and we are |
1569 | not generating a shared library, then set the symbol to this | |
1570 | location in the .plt. This is required to make function | |
1571 | pointers compare as equal between the normal executable and | |
1572 | the shared library. */ | |
1573 | if (! info->shared | |
1574 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1575 | { | |
1576 | h->root.u.def.section = s; | |
1577 | h->root.u.def.value = h->plt.offset; | |
1578 | } | |
6725bdbf | 1579 | |
ced53ee5 AM |
1580 | /* Make room for this entry. */ |
1581 | s->_raw_size += PLT_ENTRY_SIZE; | |
6725bdbf | 1582 | |
ced53ee5 AM |
1583 | /* We also need to make an entry in the .got.plt section, which |
1584 | will be placed in the .got section by the linker script. */ | |
0ac8d2ca | 1585 | htab->sgotplt->_raw_size += 4; |
6725bdbf | 1586 | |
6725bdbf | 1587 | /* We also need to make an entry in the .rel.plt section. */ |
0ac8d2ca | 1588 | htab->srelplt->_raw_size += sizeof (Elf32_External_Rel); |
6725bdbf | 1589 | } |
ced53ee5 AM |
1590 | else |
1591 | { | |
51b64d56 | 1592 | h->plt.offset = (bfd_vma) -1; |
ced53ee5 AM |
1593 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
1594 | } | |
6725bdbf AM |
1595 | } |
1596 | else | |
1597 | { | |
51b64d56 | 1598 | h->plt.offset = (bfd_vma) -1; |
6725bdbf AM |
1599 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
1600 | } | |
1601 | ||
37e55690 | 1602 | /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, |
13ae64f3 JJ |
1603 | make it a R_386_TLS_LE_32 requiring no TLS entry. */ |
1604 | if (h->got.refcount > 0 | |
1605 | && !info->shared | |
1606 | && h->dynindx == -1 | |
37e55690 | 1607 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE)) |
cedb70c5 | 1608 | h->got.offset = (bfd_vma) -1; |
13ae64f3 | 1609 | else if (h->got.refcount > 0) |
6725bdbf | 1610 | { |
0ac8d2ca | 1611 | asection *s; |
b34976b6 | 1612 | bfd_boolean dyn; |
13ae64f3 | 1613 | int tls_type = elf_i386_hash_entry(h)->tls_type; |
6725bdbf | 1614 | |
5a15f56f AM |
1615 | /* Make sure this symbol is output as a dynamic symbol. |
1616 | Undefined weak syms won't yet be marked as dynamic. */ | |
1617 | if (h->dynindx == -1 | |
1618 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1619 | { | |
1620 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1621 | return FALSE; |
5a15f56f AM |
1622 | } |
1623 | ||
6725bdbf AM |
1624 | s = htab->sgot; |
1625 | h->got.offset = s->_raw_size; | |
1626 | s->_raw_size += 4; | |
13ae64f3 | 1627 | /* R_386_TLS_GD needs 2 consecutive GOT slots. */ |
37e55690 | 1628 | if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE_BOTH) |
13ae64f3 | 1629 | s->_raw_size += 4; |
ebe50bae | 1630 | dyn = htab->elf.dynamic_sections_created; |
13ae64f3 | 1631 | /* R_386_TLS_IE_32 needs one dynamic relocation, |
37e55690 JJ |
1632 | R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, |
1633 | (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we | |
1634 | need two), R_386_TLS_GD needs one if local symbol and two if | |
1635 | global. */ | |
1636 | if (tls_type == GOT_TLS_IE_BOTH) | |
1637 | htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
1638 | else if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1639 | || (tls_type & GOT_TLS_IE)) | |
13ae64f3 JJ |
1640 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); |
1641 | else if (tls_type == GOT_TLS_GD) | |
1642 | htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
26e41594 AM |
1643 | else if (info->shared |
1644 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
6725bdbf AM |
1645 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); |
1646 | } | |
1647 | else | |
51b64d56 | 1648 | h->got.offset = (bfd_vma) -1; |
6725bdbf | 1649 | |
5a15f56f AM |
1650 | eh = (struct elf_i386_link_hash_entry *) h; |
1651 | if (eh->dyn_relocs == NULL) | |
b34976b6 | 1652 | return TRUE; |
5a15f56f | 1653 | |
0c715baa AM |
1654 | /* In the shared -Bsymbolic case, discard space allocated for |
1655 | dynamic pc-relative relocs against symbols which turn out to be | |
1656 | defined in regular objects. For the normal shared case, discard | |
0ac8d2ca AM |
1657 | space for pc-relative relocs that have become local due to symbol |
1658 | visibility changes. */ | |
0c715baa AM |
1659 | |
1660 | if (info->shared) | |
5a15f56f | 1661 | { |
0c715baa AM |
1662 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 |
1663 | && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 | |
1664 | || info->symbolic)) | |
5a15f56f | 1665 | { |
0c715baa AM |
1666 | struct elf_i386_dyn_relocs **pp; |
1667 | ||
1668 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1669 | { | |
1670 | p->count -= p->pc_count; | |
1671 | p->pc_count = 0; | |
1672 | if (p->count == 0) | |
1673 | *pp = p->next; | |
1674 | else | |
1675 | pp = &p->next; | |
1676 | } | |
5a15f56f | 1677 | } |
0c715baa AM |
1678 | } |
1679 | else | |
1680 | { | |
1681 | /* For the non-shared case, discard space for relocs against | |
1682 | symbols which turn out to need copy relocs or are not | |
1683 | dynamic. */ | |
1684 | ||
1685 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
1686 | && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1687 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
ebe50bae | 1688 | || (htab->elf.dynamic_sections_created |
0c715baa AM |
1689 | && (h->root.type == bfd_link_hash_undefweak |
1690 | || h->root.type == bfd_link_hash_undefined)))) | |
1691 | { | |
1692 | /* Make sure this symbol is output as a dynamic symbol. | |
1693 | Undefined weak syms won't yet be marked as dynamic. */ | |
1694 | if (h->dynindx == -1 | |
1695 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1696 | { | |
1697 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1698 | return FALSE; |
0c715baa | 1699 | } |
5a15f56f | 1700 | |
0c715baa AM |
1701 | /* If that succeeded, we know we'll be keeping all the |
1702 | relocs. */ | |
1703 | if (h->dynindx != -1) | |
1704 | goto keep; | |
1705 | } | |
1706 | ||
1707 | eh->dyn_relocs = NULL; | |
1708 | ||
ec338859 | 1709 | keep: ; |
5a15f56f AM |
1710 | } |
1711 | ||
0c715baa AM |
1712 | /* Finally, allocate space. */ |
1713 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
12d0ee4a | 1714 | { |
0c715baa AM |
1715 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
1716 | sreloc->_raw_size += p->count * sizeof (Elf32_External_Rel); | |
12d0ee4a AM |
1717 | } |
1718 | ||
b34976b6 | 1719 | return TRUE; |
6725bdbf AM |
1720 | } |
1721 | ||
0c715baa AM |
1722 | /* Find any dynamic relocs that apply to read-only sections. */ |
1723 | ||
b34976b6 | 1724 | static bfd_boolean |
0c715baa AM |
1725 | readonly_dynrelocs (h, inf) |
1726 | struct elf_link_hash_entry *h; | |
1727 | PTR inf; | |
1728 | { | |
1729 | struct elf_i386_link_hash_entry *eh; | |
1730 | struct elf_i386_dyn_relocs *p; | |
1731 | ||
e92d460e AM |
1732 | if (h->root.type == bfd_link_hash_warning) |
1733 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1734 | ||
0c715baa AM |
1735 | eh = (struct elf_i386_link_hash_entry *) h; |
1736 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1737 | { | |
1738 | asection *s = p->sec->output_section; | |
1739 | ||
1740 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1741 | { | |
1742 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
1743 | ||
1744 | info->flags |= DF_TEXTREL; | |
1745 | ||
1746 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 1747 | return FALSE; |
0c715baa AM |
1748 | } |
1749 | } | |
b34976b6 | 1750 | return TRUE; |
0c715baa AM |
1751 | } |
1752 | ||
252b5132 RH |
1753 | /* Set the sizes of the dynamic sections. */ |
1754 | ||
b34976b6 | 1755 | static bfd_boolean |
252b5132 | 1756 | elf_i386_size_dynamic_sections (output_bfd, info) |
db6751f2 | 1757 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1758 | struct bfd_link_info *info; |
1759 | { | |
6725bdbf | 1760 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1761 | bfd *dynobj; |
1762 | asection *s; | |
b34976b6 | 1763 | bfd_boolean relocs; |
0c715baa | 1764 | bfd *ibfd; |
252b5132 | 1765 | |
6725bdbf | 1766 | htab = elf_i386_hash_table (info); |
ebe50bae | 1767 | dynobj = htab->elf.dynobj; |
ffb2e45b AM |
1768 | if (dynobj == NULL) |
1769 | abort (); | |
252b5132 | 1770 | |
ebe50bae | 1771 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
1772 | { |
1773 | /* Set the contents of the .interp section to the interpreter. */ | |
1774 | if (! info->shared) | |
1775 | { | |
1776 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
ffb2e45b AM |
1777 | if (s == NULL) |
1778 | abort (); | |
252b5132 RH |
1779 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
1780 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1781 | } | |
161d71a6 | 1782 | } |
6725bdbf | 1783 | |
0c715baa AM |
1784 | /* Set up .got offsets for local syms, and space for local dynamic |
1785 | relocs. */ | |
1786 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
161d71a6 L |
1787 | { |
1788 | bfd_signed_vma *local_got; | |
1789 | bfd_signed_vma *end_local_got; | |
13ae64f3 | 1790 | char *local_tls_type; |
161d71a6 L |
1791 | bfd_size_type locsymcount; |
1792 | Elf_Internal_Shdr *symtab_hdr; | |
1793 | asection *srel; | |
6725bdbf | 1794 | |
0c715baa | 1795 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
161d71a6 | 1796 | continue; |
6725bdbf | 1797 | |
0c715baa AM |
1798 | for (s = ibfd->sections; s != NULL; s = s->next) |
1799 | { | |
ec338859 | 1800 | struct elf_i386_dyn_relocs *p; |
0c715baa | 1801 | |
ec338859 AM |
1802 | for (p = *((struct elf_i386_dyn_relocs **) |
1803 | &elf_section_data (s)->local_dynrel); | |
1804 | p != NULL; | |
1805 | p = p->next) | |
0c715baa | 1806 | { |
ec338859 AM |
1807 | if (!bfd_is_abs_section (p->sec) |
1808 | && bfd_is_abs_section (p->sec->output_section)) | |
1809 | { | |
1810 | /* Input section has been discarded, either because | |
1811 | it is a copy of a linkonce section or due to | |
1812 | linker script /DISCARD/, so we'll be discarding | |
1813 | the relocs too. */ | |
1814 | } | |
248866a8 | 1815 | else if (p->count != 0) |
ec338859 AM |
1816 | { |
1817 | srel = elf_section_data (p->sec)->sreloc; | |
1818 | srel->_raw_size += p->count * sizeof (Elf32_External_Rel); | |
248866a8 AM |
1819 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1820 | info->flags |= DF_TEXTREL; | |
ec338859 | 1821 | } |
0c715baa AM |
1822 | } |
1823 | } | |
1824 | ||
1825 | local_got = elf_local_got_refcounts (ibfd); | |
161d71a6 L |
1826 | if (!local_got) |
1827 | continue; | |
6725bdbf | 1828 | |
0c715baa | 1829 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
161d71a6 L |
1830 | locsymcount = symtab_hdr->sh_info; |
1831 | end_local_got = local_got + locsymcount; | |
13ae64f3 | 1832 | local_tls_type = elf_i386_local_got_tls_type (ibfd); |
161d71a6 L |
1833 | s = htab->sgot; |
1834 | srel = htab->srelgot; | |
13ae64f3 | 1835 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
161d71a6 L |
1836 | { |
1837 | if (*local_got > 0) | |
6725bdbf | 1838 | { |
161d71a6 L |
1839 | *local_got = s->_raw_size; |
1840 | s->_raw_size += 4; | |
37e55690 JJ |
1841 | if (*local_tls_type == GOT_TLS_GD |
1842 | || *local_tls_type == GOT_TLS_IE_BOTH) | |
13ae64f3 JJ |
1843 | s->_raw_size += 4; |
1844 | if (info->shared | |
1845 | || *local_tls_type == GOT_TLS_GD | |
37e55690 JJ |
1846 | || (*local_tls_type & GOT_TLS_IE)) |
1847 | { | |
1848 | if (*local_tls_type == GOT_TLS_IE_BOTH) | |
1849 | srel->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
1850 | else | |
1851 | srel->_raw_size += sizeof (Elf32_External_Rel); | |
1852 | } | |
6725bdbf | 1853 | } |
161d71a6 L |
1854 | else |
1855 | *local_got = (bfd_vma) -1; | |
6725bdbf | 1856 | } |
252b5132 | 1857 | } |
6725bdbf | 1858 | |
13ae64f3 JJ |
1859 | if (htab->tls_ldm_got.refcount > 0) |
1860 | { | |
1861 | /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM | |
1862 | relocs. */ | |
1863 | htab->tls_ldm_got.offset = htab->sgot->_raw_size; | |
1864 | htab->sgot->_raw_size += 8; | |
1865 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); | |
1866 | } | |
1867 | else | |
1868 | htab->tls_ldm_got.offset = -1; | |
1869 | ||
0c715baa AM |
1870 | /* Allocate global sym .plt and .got entries, and space for global |
1871 | sym dynamic relocs. */ | |
ebe50bae | 1872 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); |
252b5132 | 1873 | |
5a15f56f AM |
1874 | /* We now have determined the sizes of the various dynamic sections. |
1875 | Allocate memory for them. */ | |
b34976b6 | 1876 | relocs = FALSE; |
252b5132 RH |
1877 | for (s = dynobj->sections; s != NULL; s = s->next) |
1878 | { | |
252b5132 RH |
1879 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
1880 | continue; | |
1881 | ||
6725bdbf AM |
1882 | if (s == htab->splt |
1883 | || s == htab->sgot | |
1884 | || s == htab->sgotplt) | |
252b5132 | 1885 | { |
6725bdbf AM |
1886 | /* Strip this section if we don't need it; see the |
1887 | comment below. */ | |
252b5132 | 1888 | } |
6725bdbf | 1889 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rel", 4) == 0) |
252b5132 | 1890 | { |
0ac8d2ca | 1891 | if (s->_raw_size != 0 && s != htab->srelplt) |
b34976b6 | 1892 | relocs = TRUE; |
252b5132 | 1893 | |
0ac8d2ca AM |
1894 | /* We use the reloc_count field as a counter if we need |
1895 | to copy relocs into the output file. */ | |
1896 | s->reloc_count = 0; | |
252b5132 | 1897 | } |
6725bdbf | 1898 | else |
252b5132 RH |
1899 | { |
1900 | /* It's not one of our sections, so don't allocate space. */ | |
1901 | continue; | |
1902 | } | |
1903 | ||
6725bdbf | 1904 | if (s->_raw_size == 0) |
252b5132 | 1905 | { |
0ac8d2ca AM |
1906 | /* If we don't need this section, strip it from the |
1907 | output file. This is mostly to handle .rel.bss and | |
1908 | .rel.plt. We must create both sections in | |
1909 | create_dynamic_sections, because they must be created | |
1910 | before the linker maps input sections to output | |
1911 | sections. The linker does that before | |
1912 | adjust_dynamic_symbol is called, and it is that | |
1913 | function which decides whether anything needs to go | |
1914 | into these sections. */ | |
1915 | ||
7f8d5fc9 | 1916 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
1917 | continue; |
1918 | } | |
1919 | ||
f69da49f AM |
1920 | /* Allocate memory for the section contents. We use bfd_zalloc |
1921 | here in case unused entries are not reclaimed before the | |
1922 | section's contents are written out. This should not happen, | |
1923 | but this way if it does, we get a R_386_NONE reloc instead | |
1924 | of garbage. */ | |
7a9af8c4 | 1925 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
6725bdbf | 1926 | if (s->contents == NULL) |
b34976b6 | 1927 | return FALSE; |
252b5132 RH |
1928 | } |
1929 | ||
ebe50bae | 1930 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
1931 | { |
1932 | /* Add some entries to the .dynamic section. We fill in the | |
1933 | values later, in elf_i386_finish_dynamic_sections, but we | |
1934 | must add the entries now so that we get the correct size for | |
1935 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1936 | dynamic linker and used by the debugger. */ | |
dc810e39 AM |
1937 | #define add_dynamic_entry(TAG, VAL) \ |
1938 | bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
1939 | ||
252b5132 RH |
1940 | if (! info->shared) |
1941 | { | |
dc810e39 | 1942 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1943 | return FALSE; |
252b5132 RH |
1944 | } |
1945 | ||
6725bdbf | 1946 | if (htab->splt->_raw_size != 0) |
252b5132 | 1947 | { |
dc810e39 AM |
1948 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1949 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1950 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
1951 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1952 | return FALSE; |
252b5132 RH |
1953 | } |
1954 | ||
1955 | if (relocs) | |
1956 | { | |
dc810e39 AM |
1957 | if (!add_dynamic_entry (DT_REL, 0) |
1958 | || !add_dynamic_entry (DT_RELSZ, 0) | |
1959 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 1960 | return FALSE; |
252b5132 | 1961 | |
0c715baa AM |
1962 | /* If any dynamic relocs apply to a read-only section, |
1963 | then we need a DT_TEXTREL entry. */ | |
248866a8 AM |
1964 | if ((info->flags & DF_TEXTREL) == 0) |
1965 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
1966 | (PTR) info); | |
0c715baa AM |
1967 | |
1968 | if ((info->flags & DF_TEXTREL) != 0) | |
1969 | { | |
1970 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1971 | return FALSE; |
0c715baa | 1972 | } |
252b5132 RH |
1973 | } |
1974 | } | |
dc810e39 | 1975 | #undef add_dynamic_entry |
252b5132 | 1976 | |
b34976b6 | 1977 | return TRUE; |
252b5132 RH |
1978 | } |
1979 | ||
38701953 AM |
1980 | /* Set the correct type for an x86 ELF section. We do this by the |
1981 | section name, which is a hack, but ought to work. */ | |
1982 | ||
b34976b6 | 1983 | static bfd_boolean |
38701953 AM |
1984 | elf_i386_fake_sections (abfd, hdr, sec) |
1985 | bfd *abfd ATTRIBUTE_UNUSED; | |
947216bf | 1986 | Elf_Internal_Shdr *hdr; |
38701953 AM |
1987 | asection *sec; |
1988 | { | |
1989 | register const char *name; | |
1990 | ||
1991 | name = bfd_get_section_name (abfd, sec); | |
1992 | ||
1993 | /* This is an ugly, but unfortunately necessary hack that is | |
1994 | needed when producing EFI binaries on x86. It tells | |
1995 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
1996 | containing ELF relocation info. We need this hack in order to | |
1997 | be able to generate ELF binaries that can be translated into | |
1998 | EFI applications (which are essentially COFF objects). Those | |
1999 | files contain a COFF ".reloc" section inside an ELFNN object, | |
2000 | which would normally cause BFD to segfault because it would | |
2001 | attempt to interpret this section as containing relocation | |
2002 | entries for section "oc". With this hack enabled, ".reloc" | |
2003 | will be treated as a normal data section, which will avoid the | |
2004 | segfault. However, you won't be able to create an ELFNN binary | |
2005 | with a section named "oc" that needs relocations, but that's | |
2006 | the kind of ugly side-effects you get when detecting section | |
2007 | types based on their names... In practice, this limitation is | |
2008 | unlikely to bite. */ | |
2009 | if (strcmp (name, ".reloc") == 0) | |
2010 | hdr->sh_type = SHT_PROGBITS; | |
2011 | ||
b34976b6 | 2012 | return TRUE; |
38701953 AM |
2013 | } |
2014 | ||
13ae64f3 JJ |
2015 | /* Return the base VMA address which should be subtracted from real addresses |
2016 | when resolving @dtpoff relocation. | |
2017 | This is PT_TLS segment p_vaddr. */ | |
2018 | ||
2019 | static bfd_vma | |
2020 | dtpoff_base (info) | |
2021 | struct bfd_link_info *info; | |
2022 | { | |
6a30718d JJ |
2023 | /* If tls_segment is NULL, we should have signalled an error already. */ |
2024 | if (elf_hash_table (info)->tls_segment == NULL) | |
2025 | return 0; | |
13ae64f3 JJ |
2026 | return elf_hash_table (info)->tls_segment->start; |
2027 | } | |
2028 | ||
2029 | /* Return the relocation value for @tpoff relocation | |
2030 | if STT_TLS virtual address is ADDRESS. */ | |
2031 | ||
2032 | static bfd_vma | |
2033 | tpoff (info, address) | |
2034 | struct bfd_link_info *info; | |
2035 | bfd_vma address; | |
2036 | { | |
2037 | struct elf_link_tls_segment *tls_segment | |
2038 | = elf_hash_table (info)->tls_segment; | |
2039 | ||
6a30718d JJ |
2040 | /* If tls_segment is NULL, we should have signalled an error already. */ |
2041 | if (tls_segment == NULL) | |
2042 | return 0; | |
13ae64f3 JJ |
2043 | return (align_power (tls_segment->size, tls_segment->align) |
2044 | + tls_segment->start - address); | |
2045 | } | |
2046 | ||
252b5132 RH |
2047 | /* Relocate an i386 ELF section. */ |
2048 | ||
b34976b6 | 2049 | static bfd_boolean |
252b5132 RH |
2050 | elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, |
2051 | contents, relocs, local_syms, local_sections) | |
2052 | bfd *output_bfd; | |
2053 | struct bfd_link_info *info; | |
2054 | bfd *input_bfd; | |
2055 | asection *input_section; | |
2056 | bfd_byte *contents; | |
2057 | Elf_Internal_Rela *relocs; | |
2058 | Elf_Internal_Sym *local_syms; | |
2059 | asection **local_sections; | |
2060 | { | |
6725bdbf | 2061 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2062 | Elf_Internal_Shdr *symtab_hdr; |
2063 | struct elf_link_hash_entry **sym_hashes; | |
2064 | bfd_vma *local_got_offsets; | |
252b5132 RH |
2065 | Elf_Internal_Rela *rel; |
2066 | Elf_Internal_Rela *relend; | |
2067 | ||
6725bdbf | 2068 | htab = elf_i386_hash_table (info); |
252b5132 RH |
2069 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
2070 | sym_hashes = elf_sym_hashes (input_bfd); | |
2071 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2072 | ||
252b5132 RH |
2073 | rel = relocs; |
2074 | relend = relocs + input_section->reloc_count; | |
2075 | for (; rel < relend; rel++) | |
2076 | { | |
13ae64f3 | 2077 | unsigned int r_type; |
252b5132 RH |
2078 | reloc_howto_type *howto; |
2079 | unsigned long r_symndx; | |
2080 | struct elf_link_hash_entry *h; | |
2081 | Elf_Internal_Sym *sym; | |
2082 | asection *sec; | |
ffb2e45b | 2083 | bfd_vma off; |
252b5132 | 2084 | bfd_vma relocation; |
b34976b6 | 2085 | bfd_boolean unresolved_reloc; |
252b5132 | 2086 | bfd_reloc_status_type r; |
1b452ec6 | 2087 | unsigned int indx; |
13ae64f3 | 2088 | int tls_type; |
252b5132 RH |
2089 | |
2090 | r_type = ELF32_R_TYPE (rel->r_info); | |
dc47f327 AM |
2091 | if (r_type == (int) R_386_GNU_VTINHERIT |
2092 | || r_type == (int) R_386_GNU_VTENTRY) | |
252b5132 | 2093 | continue; |
dc47f327 | 2094 | |
1b452ec6 | 2095 | if ((indx = (unsigned) r_type) >= R_386_standard |
13ae64f3 JJ |
2096 | && ((indx = r_type - R_386_ext_offset) - R_386_standard |
2097 | >= R_386_ext - R_386_standard) | |
2098 | && ((indx = r_type - R_386_tls_offset) - R_386_ext | |
2099 | >= R_386_tls - R_386_ext)) | |
252b5132 RH |
2100 | { |
2101 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2102 | return FALSE; |
252b5132 | 2103 | } |
1b452ec6 | 2104 | howto = elf_howto_table + indx; |
252b5132 RH |
2105 | |
2106 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2107 | ||
2108 | if (info->relocateable) | |
2109 | { | |
4a335f3d | 2110 | bfd_vma val; |
4a335f3d AM |
2111 | bfd_byte *where; |
2112 | ||
0ac8d2ca | 2113 | /* This is a relocatable link. We don't have to change |
252b5132 RH |
2114 | anything, unless the reloc is against a section symbol, |
2115 | in which case we have to adjust according to where the | |
2116 | section symbol winds up in the output section. */ | |
4a335f3d AM |
2117 | if (r_symndx >= symtab_hdr->sh_info) |
2118 | continue; | |
2119 | ||
2120 | sym = local_syms + r_symndx; | |
2121 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
2122 | continue; | |
2123 | ||
2124 | sec = local_sections[r_symndx]; | |
2125 | val = sec->output_offset; | |
2126 | if (val == 0) | |
2127 | continue; | |
2128 | ||
2129 | where = contents + rel->r_offset; | |
2130 | switch (howto->size) | |
252b5132 | 2131 | { |
16a10388 | 2132 | /* FIXME: overflow checks. */ |
4a335f3d | 2133 | case 0: |
16a10388 | 2134 | val += bfd_get_8 (input_bfd, where); |
4a335f3d | 2135 | bfd_put_8 (input_bfd, val, where); |
4a335f3d AM |
2136 | break; |
2137 | case 1: | |
16a10388 | 2138 | val += bfd_get_16 (input_bfd, where); |
4a335f3d | 2139 | bfd_put_16 (input_bfd, val, where); |
4a335f3d AM |
2140 | break; |
2141 | case 2: | |
2142 | val += bfd_get_32 (input_bfd, where); | |
2143 | bfd_put_32 (input_bfd, val, where); | |
2144 | break; | |
2145 | default: | |
2146 | abort (); | |
252b5132 | 2147 | } |
252b5132 RH |
2148 | continue; |
2149 | } | |
2150 | ||
2151 | /* This is a final link. */ | |
2152 | h = NULL; | |
2153 | sym = NULL; | |
2154 | sec = NULL; | |
b34976b6 | 2155 | unresolved_reloc = FALSE; |
252b5132 RH |
2156 | if (r_symndx < symtab_hdr->sh_info) |
2157 | { | |
2158 | sym = local_syms + r_symndx; | |
2159 | sec = local_sections[r_symndx]; | |
2160 | relocation = (sec->output_section->vma | |
2161 | + sec->output_offset | |
2162 | + sym->st_value); | |
f8df10f4 JJ |
2163 | if ((sec->flags & SEC_MERGE) |
2164 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
2165 | { | |
2166 | asection *msec; | |
2167 | bfd_vma addend; | |
4a335f3d | 2168 | bfd_byte *where = contents + rel->r_offset; |
f8df10f4 | 2169 | |
4a335f3d | 2170 | switch (howto->size) |
f8df10f4 | 2171 | { |
4a335f3d AM |
2172 | case 0: |
2173 | addend = bfd_get_8 (input_bfd, where); | |
2174 | if (howto->pc_relative) | |
2175 | { | |
2176 | addend = (addend ^ 0x80) - 0x80; | |
2177 | addend += 1; | |
2178 | } | |
2179 | break; | |
2180 | case 1: | |
2181 | addend = bfd_get_16 (input_bfd, where); | |
2182 | if (howto->pc_relative) | |
2183 | { | |
2184 | addend = (addend ^ 0x8000) - 0x8000; | |
2185 | addend += 2; | |
2186 | } | |
2187 | break; | |
2188 | case 2: | |
2189 | addend = bfd_get_32 (input_bfd, where); | |
2190 | if (howto->pc_relative) | |
2191 | { | |
2192 | addend = (addend ^ 0x80000000) - 0x80000000; | |
2193 | addend += 4; | |
2194 | } | |
2195 | break; | |
2196 | default: | |
2197 | abort (); | |
f8df10f4 JJ |
2198 | } |
2199 | ||
f8df10f4 | 2200 | msec = sec; |
4a335f3d AM |
2201 | addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); |
2202 | addend -= relocation; | |
f8df10f4 | 2203 | addend += msec->output_section->vma + msec->output_offset; |
4a335f3d AM |
2204 | |
2205 | switch (howto->size) | |
2206 | { | |
2207 | case 0: | |
16a10388 | 2208 | /* FIXME: overflow checks. */ |
4a335f3d AM |
2209 | if (howto->pc_relative) |
2210 | addend -= 1; | |
2211 | bfd_put_8 (input_bfd, addend, where); | |
4a335f3d AM |
2212 | break; |
2213 | case 1: | |
2214 | if (howto->pc_relative) | |
2215 | addend -= 2; | |
2216 | bfd_put_16 (input_bfd, addend, where); | |
4a335f3d AM |
2217 | break; |
2218 | case 2: | |
2219 | if (howto->pc_relative) | |
2220 | addend -= 4; | |
2221 | bfd_put_32 (input_bfd, addend, where); | |
2222 | break; | |
2223 | } | |
f8df10f4 | 2224 | } |
252b5132 RH |
2225 | } |
2226 | else | |
2227 | { | |
2228 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2229 | while (h->root.type == bfd_link_hash_indirect | |
2230 | || h->root.type == bfd_link_hash_warning) | |
2231 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
ffb2e45b | 2232 | |
6725bdbf | 2233 | relocation = 0; |
252b5132 RH |
2234 | if (h->root.type == bfd_link_hash_defined |
2235 | || h->root.type == bfd_link_hash_defweak) | |
2236 | { | |
2237 | sec = h->root.u.def.section; | |
83be169b AM |
2238 | if (sec->output_section == NULL) |
2239 | /* Set a flag that will be cleared later if we find a | |
2240 | relocation value for this symbol. output_section | |
2241 | is typically NULL for symbols satisfied by a shared | |
2242 | library. */ | |
b34976b6 | 2243 | unresolved_reloc = TRUE; |
252b5132 RH |
2244 | else |
2245 | relocation = (h->root.u.def.value | |
2246 | + sec->output_section->vma | |
2247 | + sec->output_offset); | |
2248 | } | |
2249 | else if (h->root.type == bfd_link_hash_undefweak) | |
6725bdbf | 2250 | ; |
671bae9c | 2251 | else if (info->shared |
3a27a730 L |
2252 | && !info->no_undefined |
2253 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
6725bdbf | 2254 | ; |
252b5132 RH |
2255 | else |
2256 | { | |
2257 | if (! ((*info->callbacks->undefined_symbol) | |
2258 | (info, h->root.root.string, input_bfd, | |
5cc7c785 | 2259 | input_section, rel->r_offset, |
3a27a730 L |
2260 | (!info->shared || info->no_undefined |
2261 | || ELF_ST_VISIBILITY (h->other))))) | |
b34976b6 | 2262 | return FALSE; |
252b5132 RH |
2263 | } |
2264 | } | |
2265 | ||
2266 | switch (r_type) | |
2267 | { | |
2268 | case R_386_GOT32: | |
2269 | /* Relocation is to the entry for this symbol in the global | |
2270 | offset table. */ | |
ffb2e45b AM |
2271 | if (htab->sgot == NULL) |
2272 | abort (); | |
252b5132 RH |
2273 | |
2274 | if (h != NULL) | |
2275 | { | |
b34976b6 | 2276 | bfd_boolean dyn; |
252b5132 RH |
2277 | |
2278 | off = h->got.offset; | |
ebe50bae | 2279 | dyn = htab->elf.dynamic_sections_created; |
26e41594 | 2280 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
252b5132 | 2281 | || (info->shared |
6725bdbf AM |
2282 | && (info->symbolic |
2283 | || h->dynindx == -1 | |
2284 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
252b5132 RH |
2285 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) |
2286 | { | |
2287 | /* This is actually a static link, or it is a | |
2288 | -Bsymbolic link and the symbol is defined | |
2289 | locally, or the symbol was forced to be local | |
2290 | because of a version file. We must initialize | |
2291 | this entry in the global offset table. Since the | |
2292 | offset must always be a multiple of 4, we use the | |
2293 | least significant bit to record whether we have | |
2294 | initialized it already. | |
2295 | ||
2296 | When doing a dynamic link, we create a .rel.got | |
2297 | relocation entry to initialize the value. This | |
2298 | is done in the finish_dynamic_symbol routine. */ | |
2299 | if ((off & 1) != 0) | |
2300 | off &= ~1; | |
2301 | else | |
2302 | { | |
2303 | bfd_put_32 (output_bfd, relocation, | |
6725bdbf | 2304 | htab->sgot->contents + off); |
252b5132 RH |
2305 | h->got.offset |= 1; |
2306 | } | |
2307 | } | |
8c694914 | 2308 | else |
b34976b6 | 2309 | unresolved_reloc = FALSE; |
252b5132 RH |
2310 | } |
2311 | else | |
2312 | { | |
ffb2e45b AM |
2313 | if (local_got_offsets == NULL) |
2314 | abort (); | |
252b5132 RH |
2315 | |
2316 | off = local_got_offsets[r_symndx]; | |
2317 | ||
2318 | /* The offset must always be a multiple of 4. We use | |
83be169b AM |
2319 | the least significant bit to record whether we have |
2320 | already generated the necessary reloc. */ | |
252b5132 RH |
2321 | if ((off & 1) != 0) |
2322 | off &= ~1; | |
2323 | else | |
2324 | { | |
6725bdbf AM |
2325 | bfd_put_32 (output_bfd, relocation, |
2326 | htab->sgot->contents + off); | |
252b5132 RH |
2327 | |
2328 | if (info->shared) | |
2329 | { | |
947216bf AM |
2330 | asection *s; |
2331 | Elf_Internal_Rela outrel; | |
2332 | bfd_byte *loc; | |
252b5132 | 2333 | |
947216bf AM |
2334 | s = htab->srelgot; |
2335 | if (s == NULL) | |
ffb2e45b | 2336 | abort (); |
252b5132 | 2337 | |
6725bdbf AM |
2338 | outrel.r_offset = (htab->sgot->output_section->vma |
2339 | + htab->sgot->output_offset | |
252b5132 RH |
2340 | + off); |
2341 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
947216bf AM |
2342 | loc = s->contents; |
2343 | loc += s->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 2344 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2345 | } |
2346 | ||
2347 | local_got_offsets[r_symndx] |= 1; | |
2348 | } | |
252b5132 RH |
2349 | } |
2350 | ||
ffb2e45b AM |
2351 | if (off >= (bfd_vma) -2) |
2352 | abort (); | |
2353 | ||
2354 | relocation = htab->sgot->output_offset + off; | |
252b5132 RH |
2355 | break; |
2356 | ||
2357 | case R_386_GOTOFF: | |
2358 | /* Relocation is relative to the start of the global offset | |
2359 | table. */ | |
2360 | ||
252b5132 RH |
2361 | /* Note that sgot->output_offset is not involved in this |
2362 | calculation. We always want the start of .got. If we | |
2363 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2364 | permitted by the ABI, we might have to change this | |
2365 | calculation. */ | |
6725bdbf | 2366 | relocation -= htab->sgot->output_section->vma; |
252b5132 RH |
2367 | break; |
2368 | ||
2369 | case R_386_GOTPC: | |
2370 | /* Use global offset table as symbol value. */ | |
6725bdbf | 2371 | relocation = htab->sgot->output_section->vma; |
b34976b6 | 2372 | unresolved_reloc = FALSE; |
252b5132 RH |
2373 | break; |
2374 | ||
2375 | case R_386_PLT32: | |
2376 | /* Relocation is to the entry for this symbol in the | |
2377 | procedure linkage table. */ | |
2378 | ||
dd5724d5 | 2379 | /* Resolve a PLT32 reloc against a local symbol directly, |
83be169b | 2380 | without using the procedure linkage table. */ |
252b5132 RH |
2381 | if (h == NULL) |
2382 | break; | |
2383 | ||
dd5724d5 | 2384 | if (h->plt.offset == (bfd_vma) -1 |
6725bdbf | 2385 | || htab->splt == NULL) |
252b5132 RH |
2386 | { |
2387 | /* We didn't make a PLT entry for this symbol. This | |
83be169b AM |
2388 | happens when statically linking PIC code, or when |
2389 | using -Bsymbolic. */ | |
252b5132 RH |
2390 | break; |
2391 | } | |
2392 | ||
6725bdbf AM |
2393 | relocation = (htab->splt->output_section->vma |
2394 | + htab->splt->output_offset | |
252b5132 | 2395 | + h->plt.offset); |
b34976b6 | 2396 | unresolved_reloc = FALSE; |
252b5132 RH |
2397 | break; |
2398 | ||
2399 | case R_386_32: | |
2400 | case R_386_PC32: | |
ec338859 AM |
2401 | /* r_symndx will be zero only for relocs against symbols |
2402 | from removed linkonce sections, or sections discarded by | |
2403 | a linker script. */ | |
2404 | if (r_symndx == 0 | |
2405 | || (input_section->flags & SEC_ALLOC) == 0) | |
2406 | break; | |
2407 | ||
12d0ee4a | 2408 | if ((info->shared |
12d0ee4a AM |
2409 | && (r_type != R_386_PC32 |
2410 | || (h != NULL | |
2411 | && h->dynindx != -1 | |
2412 | && (! info->symbolic | |
2413 | || (h->elf_link_hash_flags | |
2414 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
2415 | || (!info->shared | |
12d0ee4a AM |
2416 | && h != NULL |
2417 | && h->dynindx != -1 | |
2418 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
56882138 AM |
2419 | && (((h->elf_link_hash_flags |
2420 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
2421 | && (h->elf_link_hash_flags | |
2422 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
28d0b90e AM |
2423 | || h->root.type == bfd_link_hash_undefweak |
2424 | || h->root.type == bfd_link_hash_undefined))) | |
252b5132 | 2425 | { |
947216bf AM |
2426 | Elf_Internal_Rela outrel; |
2427 | bfd_byte *loc; | |
b34976b6 | 2428 | bfd_boolean skip, relocate; |
0c715baa | 2429 | asection *sreloc; |
252b5132 RH |
2430 | |
2431 | /* When generating a shared object, these relocations | |
2432 | are copied into the output file to be resolved at run | |
2433 | time. */ | |
2434 | ||
b34976b6 AM |
2435 | skip = FALSE; |
2436 | relocate = FALSE; | |
252b5132 | 2437 | |
c629eae0 JJ |
2438 | outrel.r_offset = |
2439 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2440 | rel->r_offset); | |
2441 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2442 | skip = TRUE; |
0bb2d96a | 2443 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2444 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
2445 | outrel.r_offset += (input_section->output_section->vma |
2446 | + input_section->output_offset); | |
2447 | ||
2448 | if (skip) | |
0bb2d96a | 2449 | memset (&outrel, 0, sizeof outrel); |
5a15f56f AM |
2450 | else if (h != NULL |
2451 | && h->dynindx != -1 | |
2452 | && (r_type == R_386_PC32 | |
2453 | || !info->shared | |
2454 | || !info->symbolic | |
2455 | || (h->elf_link_hash_flags | |
2456 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
0bb2d96a | 2457 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
2458 | else |
2459 | { | |
5a15f56f | 2460 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 2461 | relocate = TRUE; |
5a15f56f | 2462 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
252b5132 RH |
2463 | } |
2464 | ||
0c715baa AM |
2465 | sreloc = elf_section_data (input_section)->sreloc; |
2466 | if (sreloc == NULL) | |
2467 | abort (); | |
2468 | ||
947216bf AM |
2469 | loc = sreloc->contents; |
2470 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
0c715baa | 2471 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2472 | |
2473 | /* If this reloc is against an external symbol, we do | |
2474 | not want to fiddle with the addend. Otherwise, we | |
2475 | need to include the symbol value so that it becomes | |
2476 | an addend for the dynamic reloc. */ | |
2477 | if (! relocate) | |
2478 | continue; | |
2479 | } | |
252b5132 RH |
2480 | break; |
2481 | ||
37e55690 JJ |
2482 | case R_386_TLS_IE: |
2483 | if (info->shared) | |
2484 | { | |
947216bf AM |
2485 | Elf_Internal_Rela outrel; |
2486 | bfd_byte *loc; | |
37e55690 | 2487 | asection *sreloc; |
37e55690 JJ |
2488 | |
2489 | outrel.r_offset = rel->r_offset | |
2490 | + input_section->output_section->vma | |
2491 | + input_section->output_offset; | |
2492 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
2493 | sreloc = elf_section_data (input_section)->sreloc; | |
2494 | if (sreloc == NULL) | |
2495 | abort (); | |
947216bf AM |
2496 | loc = sreloc->contents; |
2497 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
2498 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2499 | } | |
2500 | /* Fall through */ | |
2501 | ||
13ae64f3 JJ |
2502 | case R_386_TLS_GD: |
2503 | case R_386_TLS_IE_32: | |
37e55690 | 2504 | case R_386_TLS_GOTIE: |
13ae64f3 JJ |
2505 | r_type = elf_i386_tls_transition (info, r_type, h == NULL); |
2506 | tls_type = GOT_UNKNOWN; | |
2507 | if (h == NULL && local_got_offsets) | |
2508 | tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx]; | |
2509 | else if (h != NULL) | |
2510 | { | |
2511 | tls_type = elf_i386_hash_entry(h)->tls_type; | |
37e55690 | 2512 | if (!info->shared && h->dynindx == -1 && (tls_type & GOT_TLS_IE)) |
13ae64f3 JJ |
2513 | r_type = R_386_TLS_LE_32; |
2514 | } | |
37e55690 JJ |
2515 | if (tls_type == GOT_TLS_IE) |
2516 | tls_type = GOT_TLS_IE_NEG; | |
2517 | if (r_type == R_386_TLS_GD) | |
2518 | { | |
2519 | if (tls_type == GOT_TLS_IE_POS) | |
2520 | r_type = R_386_TLS_GOTIE; | |
2521 | else if (tls_type & GOT_TLS_IE) | |
2522 | r_type = R_386_TLS_IE_32; | |
2523 | } | |
13ae64f3 JJ |
2524 | |
2525 | if (r_type == R_386_TLS_LE_32) | |
2526 | { | |
82e51918 | 2527 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
2528 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
2529 | { | |
2530 | unsigned int val, type; | |
2531 | bfd_vma roff; | |
2532 | ||
2533 | /* GD->LE transition. */ | |
2534 | BFD_ASSERT (rel->r_offset >= 2); | |
2535 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2536 | BFD_ASSERT (type == 0x8d || type == 0x04); | |
2537 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2538 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2539 | contents + rel->r_offset + 4) | |
2540 | == 0xe8); | |
2541 | BFD_ASSERT (rel + 1 < relend); | |
2542 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2543 | roff = rel->r_offset + 5; | |
2544 | val = bfd_get_8 (input_bfd, | |
2545 | contents + rel->r_offset - 1); | |
2546 | if (type == 0x04) | |
2547 | { | |
2548 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
2549 | Change it into: | |
2550 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2551 | (6 byte form of subl). */ | |
2552 | BFD_ASSERT (rel->r_offset >= 3); | |
2553 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2554 | contents + rel->r_offset - 3) | |
2555 | == 0x8d); | |
2556 | BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3)); | |
2557 | memcpy (contents + rel->r_offset - 3, | |
2558 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
2559 | } | |
2560 | else | |
2561 | { | |
2562 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2563 | if (rel->r_offset + 10 <= input_section->_raw_size | |
2564 | && bfd_get_8 (input_bfd, | |
2565 | contents + rel->r_offset + 9) == 0x90) | |
2566 | { | |
2567 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
2568 | Change it into: | |
2569 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2570 | (6 byte form of subl). */ | |
2571 | memcpy (contents + rel->r_offset - 2, | |
2572 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
2573 | roff = rel->r_offset + 6; | |
2574 | } | |
2575 | else | |
2576 | { | |
2577 | /* leal foo(%reg), %eax; call ___tls_get_addr | |
2578 | Change it into: | |
2579 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2580 | (5 byte form of subl). */ | |
2581 | memcpy (contents + rel->r_offset - 2, | |
2582 | "\x65\xa1\0\0\0\0\x2d\0\0\0", 11); | |
2583 | } | |
2584 | } | |
2585 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
2586 | contents + roff); | |
2587 | /* Skip R_386_PLT32. */ | |
2588 | rel++; | |
2589 | continue; | |
2590 | } | |
37e55690 | 2591 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE) |
13ae64f3 JJ |
2592 | { |
2593 | unsigned int val, type; | |
2594 | ||
2595 | /* IE->LE transition: | |
37e55690 JJ |
2596 | Originally it can be one of: |
2597 | movl foo, %eax | |
2598 | movl foo, %reg | |
2599 | addl foo, %reg | |
2600 | We change it into: | |
2601 | movl $foo, %eax | |
2602 | movl $foo, %reg | |
2603 | addl $foo, %reg. */ | |
2604 | BFD_ASSERT (rel->r_offset >= 1); | |
2605 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2606 | BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size); | |
37e55690 JJ |
2607 | if (val == 0xa1) |
2608 | { | |
2609 | /* movl foo, %eax. */ | |
7c445aa3 | 2610 | bfd_put_8 (output_bfd, 0xb8, contents + rel->r_offset - 1); |
37e55690 | 2611 | } |
299bf759 | 2612 | else |
37e55690 | 2613 | { |
299bf759 L |
2614 | BFD_ASSERT (rel->r_offset >= 2); |
2615 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2616 | switch (type) | |
26e41594 | 2617 | { |
299bf759 L |
2618 | case 0x8b: |
2619 | /* movl */ | |
2620 | BFD_ASSERT ((val & 0xc7) == 0x05); | |
2621 | bfd_put_8 (output_bfd, 0xc7, | |
2622 | contents + rel->r_offset - 2); | |
2623 | bfd_put_8 (output_bfd, | |
2624 | 0xc0 | ((val >> 3) & 7), | |
2625 | contents + rel->r_offset - 1); | |
2626 | break; | |
2627 | case 0x03: | |
2628 | /* addl */ | |
2629 | BFD_ASSERT ((val & 0xc7) == 0x05); | |
2630 | bfd_put_8 (output_bfd, 0x81, | |
2631 | contents + rel->r_offset - 2); | |
2632 | bfd_put_8 (output_bfd, | |
2633 | 0xc0 | ((val >> 3) & 7), | |
2634 | contents + rel->r_offset - 1); | |
2635 | break; | |
2636 | default: | |
2637 | BFD_FAIL (); | |
2638 | break; | |
26e41594 | 2639 | } |
37e55690 | 2640 | } |
37e55690 JJ |
2641 | bfd_put_32 (output_bfd, -tpoff (info, relocation), |
2642 | contents + rel->r_offset); | |
2643 | continue; | |
2644 | } | |
2645 | else | |
2646 | { | |
2647 | unsigned int val, type; | |
2648 | ||
2649 | /* {IE_32,GOTIE}->LE transition: | |
2650 | Originally it can be one of: | |
13ae64f3 | 2651 | subl foo(%reg1), %reg2 |
13ae64f3 | 2652 | movl foo(%reg1), %reg2 |
37e55690 | 2653 | addl foo(%reg1), %reg2 |
13ae64f3 JJ |
2654 | We change it into: |
2655 | subl $foo, %reg2 | |
37e55690 JJ |
2656 | movl $foo, %reg2 (6 byte form) |
2657 | addl $foo, %reg2. */ | |
13ae64f3 JJ |
2658 | BFD_ASSERT (rel->r_offset >= 2); |
2659 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2660 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2661 | BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size); | |
37e55690 | 2662 | BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4); |
13ae64f3 JJ |
2663 | if (type == 0x8b) |
2664 | { | |
2665 | /* movl */ | |
13ae64f3 JJ |
2666 | bfd_put_8 (output_bfd, 0xc7, |
2667 | contents + rel->r_offset - 2); | |
2668 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
2669 | contents + rel->r_offset - 1); | |
2670 | } | |
2671 | else if (type == 0x2b) | |
2672 | { | |
2673 | /* subl */ | |
13ae64f3 JJ |
2674 | bfd_put_8 (output_bfd, 0x81, |
2675 | contents + rel->r_offset - 2); | |
2676 | bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), | |
2677 | contents + rel->r_offset - 1); | |
2678 | } | |
37e55690 JJ |
2679 | else if (type == 0x03) |
2680 | { | |
2681 | /* addl */ | |
2682 | bfd_put_8 (output_bfd, 0x81, | |
2683 | contents + rel->r_offset - 2); | |
2684 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
2685 | contents + rel->r_offset - 1); | |
2686 | } | |
13ae64f3 JJ |
2687 | else |
2688 | BFD_FAIL (); | |
37e55690 JJ |
2689 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE) |
2690 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
2691 | contents + rel->r_offset); | |
2692 | else | |
2693 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
2694 | contents + rel->r_offset); | |
13ae64f3 JJ |
2695 | continue; |
2696 | } | |
2697 | } | |
2698 | ||
2699 | if (htab->sgot == NULL) | |
2700 | abort (); | |
2701 | ||
2702 | if (h != NULL) | |
2703 | off = h->got.offset; | |
2704 | else | |
2705 | { | |
2706 | if (local_got_offsets == NULL) | |
2707 | abort (); | |
2708 | ||
2709 | off = local_got_offsets[r_symndx]; | |
2710 | } | |
2711 | ||
2712 | if ((off & 1) != 0) | |
2713 | off &= ~1; | |
26e41594 | 2714 | else |
13ae64f3 | 2715 | { |
947216bf AM |
2716 | Elf_Internal_Rela outrel; |
2717 | bfd_byte *loc; | |
13ae64f3 JJ |
2718 | int dr_type, indx; |
2719 | ||
2720 | if (htab->srelgot == NULL) | |
2721 | abort (); | |
2722 | ||
2723 | outrel.r_offset = (htab->sgot->output_section->vma | |
2724 | + htab->sgot->output_offset + off); | |
2725 | ||
13ae64f3 JJ |
2726 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
2727 | if (r_type == R_386_TLS_GD) | |
2728 | dr_type = R_386_TLS_DTPMOD32; | |
37e55690 JJ |
2729 | else if (tls_type == GOT_TLS_IE_POS) |
2730 | dr_type = R_386_TLS_TPOFF; | |
13ae64f3 JJ |
2731 | else |
2732 | dr_type = R_386_TLS_TPOFF32; | |
37e55690 JJ |
2733 | if (dr_type == R_386_TLS_TPOFF && indx == 0) |
2734 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
2735 | htab->sgot->contents + off); | |
2736 | else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) | |
c5c1f40c | 2737 | bfd_put_32 (output_bfd, dtpoff_base (info) - relocation, |
c366c25e JJ |
2738 | htab->sgot->contents + off); |
2739 | else | |
2740 | bfd_put_32 (output_bfd, 0, | |
2741 | htab->sgot->contents + off); | |
13ae64f3 | 2742 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
947216bf AM |
2743 | loc = htab->srelgot->contents; |
2744 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2745 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2746 | ||
2747 | if (r_type == R_386_TLS_GD) | |
2748 | { | |
2749 | if (indx == 0) | |
2750 | { | |
82e51918 | 2751 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
2752 | bfd_put_32 (output_bfd, |
2753 | relocation - dtpoff_base (info), | |
2754 | htab->sgot->contents + off + 4); | |
2755 | } | |
2756 | else | |
2757 | { | |
2758 | bfd_put_32 (output_bfd, 0, | |
2759 | htab->sgot->contents + off + 4); | |
2760 | outrel.r_info = ELF32_R_INFO (indx, | |
2761 | R_386_TLS_DTPOFF32); | |
2762 | outrel.r_offset += 4; | |
2763 | htab->srelgot->reloc_count++; | |
947216bf AM |
2764 | loc += sizeof (Elf32_External_Rel); |
2765 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
13ae64f3 JJ |
2766 | } |
2767 | } | |
37e55690 JJ |
2768 | else if (tls_type == GOT_TLS_IE_BOTH) |
2769 | { | |
2770 | bfd_put_32 (output_bfd, | |
2771 | indx == 0 ? relocation - dtpoff_base (info) : 0, | |
2772 | htab->sgot->contents + off + 4); | |
2773 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
2774 | outrel.r_offset += 4; | |
2775 | htab->srelgot->reloc_count++; | |
947216bf | 2776 | loc += sizeof (Elf32_External_Rel); |
37e55690 JJ |
2777 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2778 | } | |
13ae64f3 JJ |
2779 | |
2780 | if (h != NULL) | |
2781 | h->got.offset |= 1; | |
2782 | else | |
2783 | local_got_offsets[r_symndx] |= 1; | |
2784 | } | |
2785 | ||
2786 | if (off >= (bfd_vma) -2) | |
2787 | abort (); | |
2788 | if (r_type == ELF32_R_TYPE (rel->r_info)) | |
2789 | { | |
2790 | relocation = htab->sgot->output_offset + off; | |
37e55690 JJ |
2791 | if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) |
2792 | && tls_type == GOT_TLS_IE_BOTH) | |
2793 | relocation += 4; | |
2794 | if (r_type == R_386_TLS_IE) | |
2795 | relocation += htab->sgot->output_section->vma; | |
b34976b6 | 2796 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
2797 | } |
2798 | else | |
2799 | { | |
2800 | unsigned int val, type; | |
2801 | bfd_vma roff; | |
2802 | ||
2803 | /* GD->IE transition. */ | |
2804 | BFD_ASSERT (rel->r_offset >= 2); | |
2805 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2806 | BFD_ASSERT (type == 0x8d || type == 0x04); | |
2807 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2808 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) | |
2809 | == 0xe8); | |
2810 | BFD_ASSERT (rel + 1 < relend); | |
2811 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2812 | roff = rel->r_offset - 3; | |
2813 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2814 | if (type == 0x04) | |
2815 | { | |
2816 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
2817 | Change it into: | |
2818 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
2819 | BFD_ASSERT (rel->r_offset >= 3); | |
2820 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2821 | contents + rel->r_offset - 3) | |
2822 | == 0x8d); | |
2823 | BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3)); | |
2824 | val >>= 3; | |
2825 | } | |
2826 | else | |
2827 | { | |
2828 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
2829 | Change it into: | |
2830 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
2831 | BFD_ASSERT (rel->r_offset + 10 <= input_section->_raw_size); | |
2832 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2833 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2834 | contents + rel->r_offset + 9) | |
2835 | == 0x90); | |
2836 | roff = rel->r_offset - 2; | |
2837 | } | |
2838 | memcpy (contents + roff, | |
2839 | "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); | |
2840 | contents[roff + 7] = 0x80 | (val & 7); | |
37e55690 JJ |
2841 | /* If foo is used only with foo@gotntpoff(%reg) and |
2842 | foo@indntpoff, but not with foo@gottpoff(%reg), change | |
2843 | subl $foo@gottpoff(%reg), %eax | |
2844 | into: | |
2845 | addl $foo@gotntpoff(%reg), %eax. */ | |
2846 | if (r_type == R_386_TLS_GOTIE) | |
2847 | { | |
2848 | contents[roff + 6] = 0x03; | |
2849 | if (tls_type == GOT_TLS_IE_BOTH) | |
2850 | off += 4; | |
2851 | } | |
13ae64f3 JJ |
2852 | bfd_put_32 (output_bfd, htab->sgot->output_offset + off, |
2853 | contents + roff + 8); | |
2854 | /* Skip R_386_PLT32. */ | |
2855 | rel++; | |
2856 | continue; | |
2857 | } | |
2858 | break; | |
2859 | ||
2860 | case R_386_TLS_LDM: | |
2861 | if (! info->shared) | |
2862 | { | |
2863 | unsigned int val; | |
2864 | ||
2865 | /* LD->LE transition: | |
2866 | Ensure it is: | |
2867 | leal foo(%reg), %eax; call ___tls_get_addr. | |
2868 | We change it into: | |
2869 | movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */ | |
2870 | BFD_ASSERT (rel->r_offset >= 2); | |
2871 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2) | |
2872 | == 0x8d); | |
2873 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2874 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2875 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2876 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) | |
2877 | == 0xe8); | |
2878 | BFD_ASSERT (rel + 1 < relend); | |
2879 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2880 | memcpy (contents + rel->r_offset - 2, | |
2881 | "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); | |
2882 | /* Skip R_386_PLT32. */ | |
2883 | rel++; | |
2884 | continue; | |
2885 | } | |
2886 | ||
2887 | if (htab->sgot == NULL) | |
2888 | abort (); | |
2889 | ||
2890 | off = htab->tls_ldm_got.offset; | |
2891 | if (off & 1) | |
2892 | off &= ~1; | |
2893 | else | |
2894 | { | |
947216bf AM |
2895 | Elf_Internal_Rela outrel; |
2896 | bfd_byte *loc; | |
13ae64f3 JJ |
2897 | |
2898 | if (htab->srelgot == NULL) | |
2899 | abort (); | |
2900 | ||
2901 | outrel.r_offset = (htab->sgot->output_section->vma | |
2902 | + htab->sgot->output_offset + off); | |
2903 | ||
2904 | bfd_put_32 (output_bfd, 0, | |
2905 | htab->sgot->contents + off); | |
2906 | bfd_put_32 (output_bfd, 0, | |
2907 | htab->sgot->contents + off + 4); | |
2908 | outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); | |
947216bf AM |
2909 | loc = htab->srelgot->contents; |
2910 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2911 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2912 | htab->tls_ldm_got.offset |= 1; | |
2913 | } | |
2914 | relocation = htab->sgot->output_offset + off; | |
b34976b6 | 2915 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
2916 | break; |
2917 | ||
2918 | case R_386_TLS_LDO_32: | |
a45bb67d | 2919 | if (info->shared || (input_section->flags & SEC_CODE) == 0) |
13ae64f3 JJ |
2920 | relocation -= dtpoff_base (info); |
2921 | else | |
2922 | /* When converting LDO to LE, we must negate. */ | |
2923 | relocation = -tpoff (info, relocation); | |
2924 | break; | |
2925 | ||
2926 | case R_386_TLS_LE_32: | |
13ae64f3 | 2927 | case R_386_TLS_LE: |
37e55690 JJ |
2928 | if (info->shared) |
2929 | { | |
947216bf | 2930 | Elf_Internal_Rela outrel; |
37e55690 | 2931 | asection *sreloc; |
947216bf | 2932 | bfd_byte *loc; |
37e55690 JJ |
2933 | int indx; |
2934 | ||
2935 | outrel.r_offset = rel->r_offset | |
2936 | + input_section->output_section->vma | |
2937 | + input_section->output_offset; | |
2938 | if (h != NULL && h->dynindx != -1) | |
2939 | indx = h->dynindx; | |
2940 | else | |
2941 | indx = 0; | |
2942 | if (r_type == R_386_TLS_LE_32) | |
2943 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); | |
2944 | else | |
2945 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
2946 | sreloc = elf_section_data (input_section)->sreloc; | |
2947 | if (sreloc == NULL) | |
2948 | abort (); | |
947216bf AM |
2949 | loc = sreloc->contents; |
2950 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
2951 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2952 | if (indx) | |
2953 | continue; | |
2954 | else if (r_type == R_386_TLS_LE_32) | |
2955 | relocation = dtpoff_base (info) - relocation; | |
2956 | else | |
2957 | relocation -= dtpoff_base (info); | |
2958 | } | |
2959 | else if (r_type == R_386_TLS_LE_32) | |
2960 | relocation = tpoff (info, relocation); | |
2961 | else | |
2962 | relocation = -tpoff (info, relocation); | |
13ae64f3 JJ |
2963 | break; |
2964 | ||
252b5132 RH |
2965 | default: |
2966 | break; | |
2967 | } | |
2968 | ||
239e1f3a AM |
2969 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
2970 | because such sections are not SEC_ALLOC and thus ld.so will | |
2971 | not process them. */ | |
8c694914 | 2972 | if (unresolved_reloc |
239e1f3a | 2973 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
8c694914 | 2974 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) |
6a30718d JJ |
2975 | { |
2976 | (*_bfd_error_handler) | |
2977 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), | |
2978 | bfd_archive_filename (input_bfd), | |
2979 | bfd_get_section_name (input_bfd, input_section), | |
2980 | (long) rel->r_offset, | |
2981 | h->root.root.string); | |
b34976b6 | 2982 | return FALSE; |
6a30718d | 2983 | } |
83be169b | 2984 | |
252b5132 RH |
2985 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
2986 | contents, rel->r_offset, | |
2987 | relocation, (bfd_vma) 0); | |
2988 | ||
cf5c0c5b | 2989 | if (r != bfd_reloc_ok) |
252b5132 | 2990 | { |
cf5c0c5b | 2991 | const char *name; |
ffb2e45b | 2992 | |
cf5c0c5b AM |
2993 | if (h != NULL) |
2994 | name = h->root.root.string; | |
2995 | else | |
2996 | { | |
2997 | name = bfd_elf_string_from_elf_section (input_bfd, | |
2998 | symtab_hdr->sh_link, | |
2999 | sym->st_name); | |
3000 | if (name == NULL) | |
b34976b6 | 3001 | return FALSE; |
cf5c0c5b AM |
3002 | if (*name == '\0') |
3003 | name = bfd_section_name (input_bfd, sec); | |
3004 | } | |
ffb2e45b | 3005 | |
cf5c0c5b AM |
3006 | if (r == bfd_reloc_overflow) |
3007 | { | |
cf5c0c5b AM |
3008 | if (! ((*info->callbacks->reloc_overflow) |
3009 | (info, name, howto->name, (bfd_vma) 0, | |
3010 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 3011 | return FALSE; |
cf5c0c5b AM |
3012 | } |
3013 | else | |
3014 | { | |
3015 | (*_bfd_error_handler) | |
3016 | (_("%s(%s+0x%lx): reloc against `%s': error %d"), | |
3017 | bfd_archive_filename (input_bfd), | |
3018 | bfd_get_section_name (input_bfd, input_section), | |
3019 | (long) rel->r_offset, name, (int) r); | |
b34976b6 | 3020 | return FALSE; |
cf5c0c5b | 3021 | } |
252b5132 RH |
3022 | } |
3023 | } | |
3024 | ||
b34976b6 | 3025 | return TRUE; |
252b5132 RH |
3026 | } |
3027 | ||
3028 | /* Finish up dynamic symbol handling. We set the contents of various | |
3029 | dynamic sections here. */ | |
3030 | ||
b34976b6 | 3031 | static bfd_boolean |
252b5132 RH |
3032 | elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym) |
3033 | bfd *output_bfd; | |
3034 | struct bfd_link_info *info; | |
3035 | struct elf_link_hash_entry *h; | |
3036 | Elf_Internal_Sym *sym; | |
3037 | { | |
6725bdbf | 3038 | struct elf_i386_link_hash_table *htab; |
252b5132 | 3039 | |
6725bdbf | 3040 | htab = elf_i386_hash_table (info); |
252b5132 RH |
3041 | |
3042 | if (h->plt.offset != (bfd_vma) -1) | |
3043 | { | |
252b5132 RH |
3044 | bfd_vma plt_index; |
3045 | bfd_vma got_offset; | |
947216bf AM |
3046 | Elf_Internal_Rela rel; |
3047 | bfd_byte *loc; | |
252b5132 RH |
3048 | |
3049 | /* This symbol has an entry in the procedure linkage table. Set | |
3050 | it up. */ | |
3051 | ||
ffb2e45b AM |
3052 | if (h->dynindx == -1 |
3053 | || htab->splt == NULL | |
3054 | || htab->sgotplt == NULL | |
3055 | || htab->srelplt == NULL) | |
3056 | abort (); | |
252b5132 RH |
3057 | |
3058 | /* Get the index in the procedure linkage table which | |
3059 | corresponds to this symbol. This is the index of this symbol | |
3060 | in all the symbols for which we are making plt entries. The | |
3061 | first entry in the procedure linkage table is reserved. */ | |
3062 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3063 | ||
3064 | /* Get the offset into the .got table of the entry that | |
3065 | corresponds to this function. Each .got entry is 4 bytes. | |
3066 | The first three are reserved. */ | |
3067 | got_offset = (plt_index + 3) * 4; | |
3068 | ||
3069 | /* Fill in the entry in the procedure linkage table. */ | |
3070 | if (! info->shared) | |
3071 | { | |
6725bdbf | 3072 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry, |
252b5132 RH |
3073 | PLT_ENTRY_SIZE); |
3074 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
3075 | (htab->sgotplt->output_section->vma |
3076 | + htab->sgotplt->output_offset | |
252b5132 | 3077 | + got_offset), |
6725bdbf | 3078 | htab->splt->contents + h->plt.offset + 2); |
252b5132 RH |
3079 | } |
3080 | else | |
3081 | { | |
6725bdbf | 3082 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry, |
252b5132 RH |
3083 | PLT_ENTRY_SIZE); |
3084 | bfd_put_32 (output_bfd, got_offset, | |
6725bdbf | 3085 | htab->splt->contents + h->plt.offset + 2); |
252b5132 RH |
3086 | } |
3087 | ||
3088 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel), | |
6725bdbf | 3089 | htab->splt->contents + h->plt.offset + 7); |
252b5132 | 3090 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), |
6725bdbf | 3091 | htab->splt->contents + h->plt.offset + 12); |
252b5132 RH |
3092 | |
3093 | /* Fill in the entry in the global offset table. */ | |
3094 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
3095 | (htab->splt->output_section->vma |
3096 | + htab->splt->output_offset | |
252b5132 RH |
3097 | + h->plt.offset |
3098 | + 6), | |
6725bdbf | 3099 | htab->sgotplt->contents + got_offset); |
252b5132 RH |
3100 | |
3101 | /* Fill in the entry in the .rel.plt section. */ | |
6725bdbf AM |
3102 | rel.r_offset = (htab->sgotplt->output_section->vma |
3103 | + htab->sgotplt->output_offset | |
252b5132 RH |
3104 | + got_offset); |
3105 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); | |
947216bf | 3106 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel); |
0ac8d2ca | 3107 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3108 | |
3109 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
3110 | { | |
3111 | /* Mark the symbol as undefined, rather than as defined in | |
51b64d56 AM |
3112 | the .plt section. Leave the value alone. This is a clue |
3113 | for the dynamic linker, to make function pointer | |
3114 | comparisons work between an application and shared | |
cedb70c5 | 3115 | library. */ |
252b5132 RH |
3116 | sym->st_shndx = SHN_UNDEF; |
3117 | } | |
3118 | } | |
3119 | ||
13ae64f3 JJ |
3120 | if (h->got.offset != (bfd_vma) -1 |
3121 | && elf_i386_hash_entry(h)->tls_type != GOT_TLS_GD | |
37e55690 | 3122 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0) |
252b5132 | 3123 | { |
947216bf AM |
3124 | Elf_Internal_Rela rel; |
3125 | bfd_byte *loc; | |
252b5132 RH |
3126 | |
3127 | /* This symbol has an entry in the global offset table. Set it | |
3128 | up. */ | |
3129 | ||
ffb2e45b AM |
3130 | if (htab->sgot == NULL || htab->srelgot == NULL) |
3131 | abort (); | |
252b5132 | 3132 | |
6725bdbf AM |
3133 | rel.r_offset = (htab->sgot->output_section->vma |
3134 | + htab->sgot->output_offset | |
dc810e39 | 3135 | + (h->got.offset & ~(bfd_vma) 1)); |
252b5132 | 3136 | |
dd5724d5 AM |
3137 | /* If this is a static link, or it is a -Bsymbolic link and the |
3138 | symbol is defined locally or was forced to be local because | |
3139 | of a version file, we just want to emit a RELATIVE reloc. | |
252b5132 RH |
3140 | The entry in the global offset table will already have been |
3141 | initialized in the relocate_section function. */ | |
6725bdbf AM |
3142 | if (info->shared |
3143 | && (info->symbolic | |
3144 | || h->dynindx == -1 | |
3145 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
3146 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
dd5724d5 | 3147 | { |
6725bdbf | 3148 | BFD_ASSERT((h->got.offset & 1) != 0); |
dd5724d5 AM |
3149 | rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
3150 | } | |
252b5132 RH |
3151 | else |
3152 | { | |
dd5724d5 | 3153 | BFD_ASSERT((h->got.offset & 1) == 0); |
6725bdbf AM |
3154 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
3155 | htab->sgot->contents + h->got.offset); | |
252b5132 RH |
3156 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); |
3157 | } | |
3158 | ||
947216bf AM |
3159 | loc = htab->srelgot->contents; |
3160 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3161 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3162 | } |
3163 | ||
791987af | 3164 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
252b5132 | 3165 | { |
947216bf AM |
3166 | Elf_Internal_Rela rel; |
3167 | bfd_byte *loc; | |
252b5132 RH |
3168 | |
3169 | /* This symbol needs a copy reloc. Set it up. */ | |
3170 | ||
ffb2e45b AM |
3171 | if (h->dynindx == -1 |
3172 | || (h->root.type != bfd_link_hash_defined | |
3173 | && h->root.type != bfd_link_hash_defweak) | |
3174 | || htab->srelbss == NULL) | |
3175 | abort (); | |
252b5132 RH |
3176 | |
3177 | rel.r_offset = (h->root.u.def.value | |
3178 | + h->root.u.def.section->output_section->vma | |
3179 | + h->root.u.def.section->output_offset); | |
3180 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); | |
947216bf AM |
3181 | loc = htab->srelbss->contents; |
3182 | loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3183 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3184 | } |
3185 | ||
3186 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
3187 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
3188 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
3189 | sym->st_shndx = SHN_ABS; | |
3190 | ||
b34976b6 | 3191 | return TRUE; |
252b5132 RH |
3192 | } |
3193 | ||
38701953 AM |
3194 | /* Used to decide how to sort relocs in an optimal manner for the |
3195 | dynamic linker, before writing them out. */ | |
3196 | ||
3197 | static enum elf_reloc_type_class | |
3198 | elf_i386_reloc_type_class (rela) | |
3199 | const Elf_Internal_Rela *rela; | |
3200 | { | |
3201 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
3202 | { | |
3203 | case R_386_RELATIVE: | |
3204 | return reloc_class_relative; | |
3205 | case R_386_JUMP_SLOT: | |
3206 | return reloc_class_plt; | |
3207 | case R_386_COPY: | |
3208 | return reloc_class_copy; | |
3209 | default: | |
3210 | return reloc_class_normal; | |
3211 | } | |
3212 | } | |
3213 | ||
252b5132 RH |
3214 | /* Finish up the dynamic sections. */ |
3215 | ||
b34976b6 | 3216 | static bfd_boolean |
252b5132 RH |
3217 | elf_i386_finish_dynamic_sections (output_bfd, info) |
3218 | bfd *output_bfd; | |
3219 | struct bfd_link_info *info; | |
3220 | { | |
6725bdbf | 3221 | struct elf_i386_link_hash_table *htab; |
252b5132 | 3222 | bfd *dynobj; |
252b5132 RH |
3223 | asection *sdyn; |
3224 | ||
6725bdbf | 3225 | htab = elf_i386_hash_table (info); |
ebe50bae | 3226 | dynobj = htab->elf.dynobj; |
252b5132 RH |
3227 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
3228 | ||
ebe50bae | 3229 | if (htab->elf.dynamic_sections_created) |
252b5132 | 3230 | { |
252b5132 RH |
3231 | Elf32_External_Dyn *dyncon, *dynconend; |
3232 | ||
ffb2e45b AM |
3233 | if (sdyn == NULL || htab->sgot == NULL) |
3234 | abort (); | |
252b5132 RH |
3235 | |
3236 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
3237 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
3238 | for (; dyncon < dynconend; dyncon++) | |
3239 | { | |
3240 | Elf_Internal_Dyn dyn; | |
51b64d56 | 3241 | asection *s; |
252b5132 RH |
3242 | |
3243 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
3244 | ||
3245 | switch (dyn.d_tag) | |
3246 | { | |
3247 | default: | |
0ac8d2ca | 3248 | continue; |
252b5132 RH |
3249 | |
3250 | case DT_PLTGOT: | |
6725bdbf | 3251 | dyn.d_un.d_ptr = htab->sgot->output_section->vma; |
6725bdbf AM |
3252 | break; |
3253 | ||
252b5132 | 3254 | case DT_JMPREL: |
6348e046 AM |
3255 | s = htab->srelplt; |
3256 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
252b5132 RH |
3257 | break; |
3258 | ||
3259 | case DT_PLTRELSZ: | |
6348e046 AM |
3260 | s = htab->srelplt; |
3261 | dyn.d_un.d_val = s->_raw_size; | |
252b5132 RH |
3262 | break; |
3263 | ||
3264 | case DT_RELSZ: | |
3265 | /* My reading of the SVR4 ABI indicates that the | |
3266 | procedure linkage table relocs (DT_JMPREL) should be | |
3267 | included in the overall relocs (DT_REL). This is | |
3268 | what Solaris does. However, UnixWare can not handle | |
3269 | that case. Therefore, we override the DT_RELSZ entry | |
6348e046 AM |
3270 | here to make it not include the JMPREL relocs. */ |
3271 | s = htab->srelplt; | |
3272 | if (s == NULL) | |
3273 | continue; | |
3274 | dyn.d_un.d_val -= s->_raw_size; | |
3275 | break; | |
3276 | ||
3277 | case DT_REL: | |
3278 | /* We may not be using the standard ELF linker script. | |
3279 | If .rel.plt is the first .rel section, we adjust | |
3280 | DT_REL to not include it. */ | |
3281 | s = htab->srelplt; | |
3282 | if (s == NULL) | |
3283 | continue; | |
3284 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
3285 | continue; | |
3286 | dyn.d_un.d_ptr += s->_raw_size; | |
252b5132 RH |
3287 | break; |
3288 | } | |
0ac8d2ca AM |
3289 | |
3290 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
3291 | } |
3292 | ||
3293 | /* Fill in the first entry in the procedure linkage table. */ | |
6725bdbf | 3294 | if (htab->splt && htab->splt->_raw_size > 0) |
252b5132 RH |
3295 | { |
3296 | if (info->shared) | |
6725bdbf AM |
3297 | memcpy (htab->splt->contents, |
3298 | elf_i386_pic_plt0_entry, PLT_ENTRY_SIZE); | |
252b5132 RH |
3299 | else |
3300 | { | |
6725bdbf AM |
3301 | memcpy (htab->splt->contents, |
3302 | elf_i386_plt0_entry, PLT_ENTRY_SIZE); | |
252b5132 | 3303 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3304 | (htab->sgotplt->output_section->vma |
3305 | + htab->sgotplt->output_offset | |
3306 | + 4), | |
3307 | htab->splt->contents + 2); | |
252b5132 | 3308 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3309 | (htab->sgotplt->output_section->vma |
3310 | + htab->sgotplt->output_offset | |
3311 | + 8), | |
3312 | htab->splt->contents + 8); | |
252b5132 RH |
3313 | } |
3314 | ||
3315 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
3316 | really seem like the right value. */ | |
6725bdbf AM |
3317 | elf_section_data (htab->splt->output_section) |
3318 | ->this_hdr.sh_entsize = 4; | |
252b5132 RH |
3319 | } |
3320 | } | |
3321 | ||
12d0ee4a | 3322 | if (htab->sgotplt) |
252b5132 | 3323 | { |
12d0ee4a AM |
3324 | /* Fill in the first three entries in the global offset table. */ |
3325 | if (htab->sgotplt->_raw_size > 0) | |
3326 | { | |
3327 | bfd_put_32 (output_bfd, | |
3328 | (sdyn == NULL ? (bfd_vma) 0 | |
3329 | : sdyn->output_section->vma + sdyn->output_offset), | |
3330 | htab->sgotplt->contents); | |
3331 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4); | |
3332 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8); | |
3333 | } | |
252b5132 | 3334 | |
12d0ee4a AM |
3335 | elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4; |
3336 | } | |
b34976b6 | 3337 | return TRUE; |
252b5132 RH |
3338 | } |
3339 | ||
3340 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vec | |
3341 | #define TARGET_LITTLE_NAME "elf32-i386" | |
3342 | #define ELF_ARCH bfd_arch_i386 | |
3343 | #define ELF_MACHINE_CODE EM_386 | |
3344 | #define ELF_MAXPAGESIZE 0x1000 | |
252b5132 RH |
3345 | |
3346 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3347 | #define elf_backend_can_refcount 1 |
252b5132 RH |
3348 | #define elf_backend_want_got_plt 1 |
3349 | #define elf_backend_plt_readonly 1 | |
3350 | #define elf_backend_want_plt_sym 0 | |
3351 | #define elf_backend_got_header_size 12 | |
3352 | #define elf_backend_plt_header_size PLT_ENTRY_SIZE | |
3353 | ||
dd5724d5 AM |
3354 | #define elf_info_to_howto elf_i386_info_to_howto |
3355 | #define elf_info_to_howto_rel elf_i386_info_to_howto_rel | |
3356 | ||
13ae64f3 JJ |
3357 | #define bfd_elf32_mkobject elf_i386_mkobject |
3358 | #define elf_backend_object_p elf_i386_object_p | |
3359 | ||
dd5724d5 AM |
3360 | #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name |
3361 | #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create | |
3362 | #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup | |
3363 | ||
3364 | #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol | |
3365 | #define elf_backend_check_relocs elf_i386_check_relocs | |
0ac8d2ca | 3366 | #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol |
6725bdbf | 3367 | #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections |
0ac8d2ca | 3368 | #define elf_backend_fake_sections elf_i386_fake_sections |
dd5724d5 AM |
3369 | #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections |
3370 | #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol | |
3371 | #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook | |
3372 | #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook | |
c5fccbec DJ |
3373 | #define elf_backend_grok_prstatus elf_i386_grok_prstatus |
3374 | #define elf_backend_grok_psinfo elf_i386_grok_psinfo | |
db6751f2 | 3375 | #define elf_backend_reloc_type_class elf_i386_reloc_type_class |
0ac8d2ca AM |
3376 | #define elf_backend_relocate_section elf_i386_relocate_section |
3377 | #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections | |
dd5724d5 | 3378 | |
252b5132 | 3379 | #include "elf32-target.h" |
2bc3c89a AM |
3380 | |
3381 | /* FreeBSD support. */ | |
3382 | ||
3383 | #undef TARGET_LITTLE_SYM | |
3384 | #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec | |
3385 | #undef TARGET_LITTLE_NAME | |
3386 | #define TARGET_LITTLE_NAME "elf32-i386-freebsd" | |
3387 | ||
3388 | /* The kernel recognizes executables as valid only if they carry a | |
3389 | "FreeBSD" label in the ELF header. So we put this label on all | |
3390 | executables and (for simplicity) also all other object files. */ | |
3391 | ||
3392 | static void elf_i386_post_process_headers | |
3393 | PARAMS ((bfd *, struct bfd_link_info *)); | |
3394 | ||
3395 | static void | |
3396 | elf_i386_post_process_headers (abfd, link_info) | |
3397 | bfd *abfd; | |
3398 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; | |
3399 | { | |
3400 | Elf_Internal_Ehdr *i_ehdrp; | |
3401 | ||
3402 | i_ehdrp = elf_elfheader (abfd); | |
3403 | ||
3404 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
3405 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; | |
3406 | #ifdef OLD_FREEBSD_ABI_LABEL | |
3407 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
3408 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
caf47ea6 | 3409 | #endif |
2bc3c89a AM |
3410 | } |
3411 | ||
3412 | #undef elf_backend_post_process_headers | |
571fe01f NC |
3413 | #define elf_backend_post_process_headers elf_i386_post_process_headers |
3414 | #undef elf32_bed | |
3415 | #define elf32_bed elf32_i386_fbsd_bed | |
2bc3c89a AM |
3416 | |
3417 | #include "elf32-target.h" |