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 | ||
a23b6845 AM |
509 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
510 | copying dynamic variables from a shared lib into an app's dynbss | |
511 | section, and instead use a dynamic relocation to point into the | |
512 | shared lib. */ | |
513 | #define ELIMINATE_COPY_RELOCS 1 | |
514 | ||
252b5132 RH |
515 | /* The size in bytes of an entry in the procedure linkage table. */ |
516 | ||
517 | #define PLT_ENTRY_SIZE 16 | |
518 | ||
519 | /* The first entry in an absolute procedure linkage table looks like | |
520 | this. See the SVR4 ABI i386 supplement to see how this works. */ | |
521 | ||
522 | static const bfd_byte elf_i386_plt0_entry[PLT_ENTRY_SIZE] = | |
523 | { | |
524 | 0xff, 0x35, /* pushl contents of address */ | |
525 | 0, 0, 0, 0, /* replaced with address of .got + 4. */ | |
526 | 0xff, 0x25, /* jmp indirect */ | |
527 | 0, 0, 0, 0, /* replaced with address of .got + 8. */ | |
528 | 0, 0, 0, 0 /* pad out to 16 bytes. */ | |
529 | }; | |
530 | ||
531 | /* Subsequent entries in an absolute procedure linkage table look like | |
532 | this. */ | |
533 | ||
534 | static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] = | |
535 | { | |
536 | 0xff, 0x25, /* jmp indirect */ | |
537 | 0, 0, 0, 0, /* replaced with address of this symbol in .got. */ | |
538 | 0x68, /* pushl immediate */ | |
539 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
540 | 0xe9, /* jmp relative */ | |
541 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
542 | }; | |
543 | ||
544 | /* The first entry in a PIC procedure linkage table look like this. */ | |
545 | ||
546 | static const bfd_byte elf_i386_pic_plt0_entry[PLT_ENTRY_SIZE] = | |
547 | { | |
548 | 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */ | |
549 | 0xff, 0xa3, 8, 0, 0, 0, /* jmp *8(%ebx) */ | |
550 | 0, 0, 0, 0 /* pad out to 16 bytes. */ | |
551 | }; | |
552 | ||
553 | /* Subsequent entries in a PIC procedure linkage table look like this. */ | |
554 | ||
555 | static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] = | |
556 | { | |
557 | 0xff, 0xa3, /* jmp *offset(%ebx) */ | |
558 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
559 | 0x68, /* pushl immediate */ | |
560 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
561 | 0xe9, /* jmp relative */ | |
562 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
563 | }; | |
564 | ||
565 | /* The i386 linker needs to keep track of the number of relocs that it | |
ffb2e45b AM |
566 | decides to copy as dynamic relocs in check_relocs for each symbol. |
567 | This is so that it can later discard them if they are found to be | |
568 | unnecessary. We store the information in a field extending the | |
569 | regular ELF linker hash table. */ | |
252b5132 | 570 | |
ffb2e45b | 571 | struct elf_i386_dyn_relocs |
252b5132 | 572 | { |
ffb2e45b | 573 | struct elf_i386_dyn_relocs *next; |
0c715baa AM |
574 | |
575 | /* The input section of the reloc. */ | |
576 | asection *sec; | |
577 | ||
578 | /* Total number of relocs copied for the input section. */ | |
252b5132 | 579 | bfd_size_type count; |
0c715baa AM |
580 | |
581 | /* Number of pc-relative relocs copied for the input section. */ | |
582 | bfd_size_type pc_count; | |
252b5132 RH |
583 | }; |
584 | ||
585 | /* i386 ELF linker hash entry. */ | |
586 | ||
587 | struct elf_i386_link_hash_entry | |
588 | { | |
ebe50bae | 589 | struct elf_link_hash_entry elf; |
252b5132 | 590 | |
0c715baa | 591 | /* Track dynamic relocs copied for this symbol. */ |
ffb2e45b | 592 | struct elf_i386_dyn_relocs *dyn_relocs; |
13ae64f3 | 593 | |
37e55690 JJ |
594 | #define GOT_UNKNOWN 0 |
595 | #define GOT_NORMAL 1 | |
596 | #define GOT_TLS_GD 2 | |
597 | #define GOT_TLS_IE 4 | |
598 | #define GOT_TLS_IE_POS 5 | |
599 | #define GOT_TLS_IE_NEG 6 | |
600 | #define GOT_TLS_IE_BOTH 7 | |
601 | unsigned char tls_type; | |
13ae64f3 JJ |
602 | }; |
603 | ||
604 | #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent)) | |
605 | ||
606 | struct elf_i386_obj_tdata | |
607 | { | |
608 | struct elf_obj_tdata root; | |
609 | ||
610 | /* tls_type for each local got entry. */ | |
611 | char *local_got_tls_type; | |
252b5132 RH |
612 | }; |
613 | ||
13ae64f3 JJ |
614 | #define elf_i386_tdata(abfd) \ |
615 | ((struct elf_i386_obj_tdata *) (abfd)->tdata.any) | |
616 | ||
617 | #define elf_i386_local_got_tls_type(abfd) \ | |
618 | (elf_i386_tdata (abfd)->local_got_tls_type) | |
619 | ||
b34976b6 | 620 | static bfd_boolean |
13ae64f3 JJ |
621 | elf_i386_mkobject (abfd) |
622 | bfd *abfd; | |
623 | { | |
624 | bfd_size_type amt = sizeof (struct elf_i386_obj_tdata); | |
625 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
626 | if (abfd->tdata.any == NULL) | |
b34976b6 AM |
627 | return FALSE; |
628 | return TRUE; | |
13ae64f3 | 629 | } |
cedb70c5 | 630 | |
b34976b6 | 631 | static bfd_boolean |
13ae64f3 JJ |
632 | elf_i386_object_p (abfd) |
633 | bfd *abfd; | |
634 | { | |
635 | /* Allocate our special target data. */ | |
636 | struct elf_i386_obj_tdata *new_tdata; | |
637 | bfd_size_type amt = sizeof (struct elf_i386_obj_tdata); | |
638 | new_tdata = bfd_zalloc (abfd, amt); | |
639 | if (new_tdata == NULL) | |
b34976b6 | 640 | return FALSE; |
13ae64f3 JJ |
641 | new_tdata->root = *abfd->tdata.elf_obj_data; |
642 | abfd->tdata.any = new_tdata; | |
b34976b6 | 643 | return TRUE; |
13ae64f3 JJ |
644 | } |
645 | ||
252b5132 RH |
646 | /* i386 ELF linker hash table. */ |
647 | ||
648 | struct elf_i386_link_hash_table | |
649 | { | |
ebe50bae | 650 | struct elf_link_hash_table elf; |
252b5132 | 651 | |
6725bdbf AM |
652 | /* Short-cuts to get to dynamic linker sections. */ |
653 | asection *sgot; | |
654 | asection *sgotplt; | |
655 | asection *srelgot; | |
656 | asection *splt; | |
657 | asection *srelplt; | |
658 | asection *sdynbss; | |
659 | asection *srelbss; | |
ec338859 | 660 | |
13ae64f3 JJ |
661 | union { |
662 | bfd_signed_vma refcount; | |
663 | bfd_vma offset; | |
664 | } tls_ldm_got; | |
665 | ||
ec338859 AM |
666 | /* Small local sym to section mapping cache. */ |
667 | struct sym_sec_cache sym_sec; | |
6725bdbf | 668 | }; |
252b5132 RH |
669 | |
670 | /* Get the i386 ELF linker hash table from a link_info structure. */ | |
671 | ||
672 | #define elf_i386_hash_table(p) \ | |
673 | ((struct elf_i386_link_hash_table *) ((p)->hash)) | |
674 | ||
675 | /* Create an entry in an i386 ELF linker hash table. */ | |
676 | ||
677 | static struct bfd_hash_entry * | |
38701953 | 678 | link_hash_newfunc (entry, table, string) |
252b5132 RH |
679 | struct bfd_hash_entry *entry; |
680 | struct bfd_hash_table *table; | |
681 | const char *string; | |
682 | { | |
252b5132 RH |
683 | /* Allocate the structure if it has not already been allocated by a |
684 | subclass. */ | |
ebe50bae AM |
685 | if (entry == NULL) |
686 | { | |
687 | entry = bfd_hash_allocate (table, | |
688 | sizeof (struct elf_i386_link_hash_entry)); | |
689 | if (entry == NULL) | |
690 | return entry; | |
691 | } | |
252b5132 RH |
692 | |
693 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
694 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
695 | if (entry != NULL) | |
252b5132 | 696 | { |
ebe50bae AM |
697 | struct elf_i386_link_hash_entry *eh; |
698 | ||
699 | eh = (struct elf_i386_link_hash_entry *) entry; | |
700 | eh->dyn_relocs = NULL; | |
13ae64f3 | 701 | eh->tls_type = GOT_UNKNOWN; |
252b5132 RH |
702 | } |
703 | ||
ebe50bae | 704 | return entry; |
252b5132 RH |
705 | } |
706 | ||
707 | /* Create an i386 ELF linker hash table. */ | |
708 | ||
709 | static struct bfd_link_hash_table * | |
710 | elf_i386_link_hash_table_create (abfd) | |
711 | bfd *abfd; | |
712 | { | |
713 | struct elf_i386_link_hash_table *ret; | |
dc810e39 | 714 | bfd_size_type amt = sizeof (struct elf_i386_link_hash_table); |
252b5132 | 715 | |
e2d34d7d | 716 | ret = (struct elf_i386_link_hash_table *) bfd_malloc (amt); |
ebe50bae | 717 | if (ret == NULL) |
252b5132 RH |
718 | return NULL; |
719 | ||
ebe50bae | 720 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc)) |
252b5132 | 721 | { |
e2d34d7d | 722 | free (ret); |
252b5132 RH |
723 | return NULL; |
724 | } | |
725 | ||
6725bdbf AM |
726 | ret->sgot = NULL; |
727 | ret->sgotplt = NULL; | |
728 | ret->srelgot = NULL; | |
729 | ret->splt = NULL; | |
730 | ret->srelplt = NULL; | |
731 | ret->sdynbss = NULL; | |
732 | ret->srelbss = NULL; | |
7a624474 | 733 | ret->tls_ldm_got.refcount = 0; |
ec338859 | 734 | ret->sym_sec.abfd = NULL; |
6725bdbf | 735 | |
ebe50bae | 736 | return &ret->elf.root; |
252b5132 RH |
737 | } |
738 | ||
6725bdbf AM |
739 | /* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up |
740 | shortcuts to them in our hash table. */ | |
741 | ||
b34976b6 | 742 | static bfd_boolean |
6725bdbf AM |
743 | create_got_section (dynobj, info) |
744 | bfd *dynobj; | |
745 | struct bfd_link_info *info; | |
746 | { | |
747 | struct elf_i386_link_hash_table *htab; | |
748 | ||
749 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 750 | return FALSE; |
6725bdbf AM |
751 | |
752 | htab = elf_i386_hash_table (info); | |
753 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
754 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
755 | if (!htab->sgot || !htab->sgotplt) | |
756 | abort (); | |
757 | ||
758 | htab->srelgot = bfd_make_section (dynobj, ".rel.got"); | |
759 | if (htab->srelgot == NULL | |
760 | || ! bfd_set_section_flags (dynobj, htab->srelgot, | |
761 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
762 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
763 | | SEC_READONLY)) | |
764 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) | |
b34976b6 AM |
765 | return FALSE; |
766 | return TRUE; | |
6725bdbf AM |
767 | } |
768 | ||
769 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and | |
770 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
771 | hash table. */ | |
772 | ||
b34976b6 | 773 | static bfd_boolean |
6725bdbf AM |
774 | elf_i386_create_dynamic_sections (dynobj, info) |
775 | bfd *dynobj; | |
776 | struct bfd_link_info *info; | |
777 | { | |
778 | struct elf_i386_link_hash_table *htab; | |
779 | ||
780 | htab = elf_i386_hash_table (info); | |
781 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
b34976b6 | 782 | return FALSE; |
6725bdbf AM |
783 | |
784 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 785 | return FALSE; |
6725bdbf AM |
786 | |
787 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
788 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt"); | |
789 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
790 | if (!info->shared) | |
791 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
792 | ||
793 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
794 | || (!info->shared && !htab->srelbss)) | |
795 | abort (); | |
796 | ||
b34976b6 | 797 | return TRUE; |
6725bdbf AM |
798 | } |
799 | ||
ebe50bae AM |
800 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
801 | ||
51b64d56 | 802 | static void |
b48fa14c AM |
803 | elf_i386_copy_indirect_symbol (bed, dir, ind) |
804 | struct elf_backend_data *bed; | |
ebe50bae AM |
805 | struct elf_link_hash_entry *dir, *ind; |
806 | { | |
807 | struct elf_i386_link_hash_entry *edir, *eind; | |
808 | ||
809 | edir = (struct elf_i386_link_hash_entry *) dir; | |
810 | eind = (struct elf_i386_link_hash_entry *) ind; | |
811 | ||
bbd7ec4a | 812 | if (eind->dyn_relocs != NULL) |
ebe50bae | 813 | { |
bbd7ec4a AM |
814 | if (edir->dyn_relocs != NULL) |
815 | { | |
816 | struct elf_i386_dyn_relocs **pp; | |
817 | struct elf_i386_dyn_relocs *p; | |
818 | ||
1e370bd2 | 819 | if (ind->root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
820 | abort (); |
821 | ||
822 | /* Add reloc counts against the weak sym to the strong sym | |
823 | list. Merge any entries against the same section. */ | |
824 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
825 | { | |
826 | struct elf_i386_dyn_relocs *q; | |
827 | ||
828 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
829 | if (q->sec == p->sec) | |
830 | { | |
831 | q->pc_count += p->pc_count; | |
832 | q->count += p->count; | |
833 | *pp = p->next; | |
834 | break; | |
835 | } | |
836 | if (q == NULL) | |
837 | pp = &p->next; | |
838 | } | |
839 | *pp = edir->dyn_relocs; | |
840 | } | |
841 | ||
ebe50bae AM |
842 | edir->dyn_relocs = eind->dyn_relocs; |
843 | eind->dyn_relocs = NULL; | |
844 | } | |
ebe50bae | 845 | |
cd67d266 JJ |
846 | if (ind->root.type == bfd_link_hash_indirect |
847 | && dir->got.refcount <= 0) | |
848 | { | |
849 | edir->tls_type = eind->tls_type; | |
850 | eind->tls_type = GOT_UNKNOWN; | |
851 | } | |
b48fa14c | 852 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); |
ebe50bae AM |
853 | } |
854 | ||
13ae64f3 JJ |
855 | static int |
856 | elf_i386_tls_transition (info, r_type, is_local) | |
857 | struct bfd_link_info *info; | |
858 | int r_type; | |
859 | int is_local; | |
860 | { | |
861 | if (info->shared) | |
862 | return r_type; | |
863 | ||
864 | switch (r_type) | |
865 | { | |
866 | case R_386_TLS_GD: | |
867 | case R_386_TLS_IE_32: | |
868 | if (is_local) | |
869 | return R_386_TLS_LE_32; | |
870 | return R_386_TLS_IE_32; | |
37e55690 JJ |
871 | case R_386_TLS_IE: |
872 | case R_386_TLS_GOTIE: | |
873 | if (is_local) | |
874 | return R_386_TLS_LE_32; | |
875 | return r_type; | |
13ae64f3 JJ |
876 | case R_386_TLS_LDM: |
877 | return R_386_TLS_LE_32; | |
878 | } | |
879 | ||
880 | return r_type; | |
881 | } | |
882 | ||
252b5132 | 883 | /* Look through the relocs for a section during the first phase, and |
0ac8d2ca AM |
884 | calculate needed space in the global offset table, procedure linkage |
885 | table, and dynamic reloc sections. */ | |
252b5132 | 886 | |
b34976b6 | 887 | static bfd_boolean |
252b5132 RH |
888 | elf_i386_check_relocs (abfd, info, sec, relocs) |
889 | bfd *abfd; | |
890 | struct bfd_link_info *info; | |
891 | asection *sec; | |
892 | const Elf_Internal_Rela *relocs; | |
893 | { | |
6725bdbf | 894 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
895 | Elf_Internal_Shdr *symtab_hdr; |
896 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
897 | const Elf_Internal_Rela *rel; |
898 | const Elf_Internal_Rela *rel_end; | |
252b5132 RH |
899 | asection *sreloc; |
900 | ||
901 | if (info->relocateable) | |
b34976b6 | 902 | return TRUE; |
252b5132 | 903 | |
6725bdbf | 904 | htab = elf_i386_hash_table (info); |
252b5132 RH |
905 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
906 | sym_hashes = elf_sym_hashes (abfd); | |
252b5132 | 907 | |
252b5132 RH |
908 | sreloc = NULL; |
909 | ||
910 | rel_end = relocs + sec->reloc_count; | |
911 | for (rel = relocs; rel < rel_end; rel++) | |
912 | { | |
13ae64f3 | 913 | unsigned int r_type; |
252b5132 RH |
914 | unsigned long r_symndx; |
915 | struct elf_link_hash_entry *h; | |
916 | ||
917 | r_symndx = ELF32_R_SYM (rel->r_info); | |
13ae64f3 | 918 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 919 | |
d9bc7a44 | 920 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
f5f31454 | 921 | { |
8f615d07 AM |
922 | (*_bfd_error_handler) (_("%s: bad symbol index: %d"), |
923 | bfd_archive_filename (abfd), | |
924 | r_symndx); | |
b34976b6 | 925 | return FALSE; |
f5f31454 L |
926 | } |
927 | ||
252b5132 RH |
928 | if (r_symndx < symtab_hdr->sh_info) |
929 | h = NULL; | |
930 | else | |
931 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
932 | ||
13ae64f3 JJ |
933 | r_type = elf_i386_tls_transition (info, r_type, h == NULL); |
934 | ||
935 | switch (r_type) | |
252b5132 | 936 | { |
37e55690 JJ |
937 | case R_386_TLS_LDM: |
938 | htab->tls_ldm_got.refcount += 1; | |
939 | goto create_got; | |
940 | ||
941 | case R_386_PLT32: | |
942 | /* This symbol requires a procedure linkage table entry. We | |
943 | actually build the entry in adjust_dynamic_symbol, | |
944 | because this might be a case of linking PIC code which is | |
945 | never referenced by a dynamic object, in which case we | |
946 | don't need to generate a procedure linkage table entry | |
947 | after all. */ | |
948 | ||
949 | /* If this is a local symbol, we resolve it directly without | |
950 | creating a procedure linkage table entry. */ | |
951 | if (h == NULL) | |
952 | continue; | |
953 | ||
954 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
955 | h->plt.refcount += 1; | |
956 | break; | |
957 | ||
13ae64f3 | 958 | case R_386_TLS_IE_32: |
37e55690 JJ |
959 | case R_386_TLS_IE: |
960 | case R_386_TLS_GOTIE: | |
13ae64f3 JJ |
961 | if (info->shared) |
962 | info->flags |= DF_STATIC_TLS; | |
37e55690 JJ |
963 | /* Fall through */ |
964 | ||
252b5132 | 965 | case R_386_GOT32: |
13ae64f3 | 966 | case R_386_TLS_GD: |
252b5132 | 967 | /* This symbol requires a global offset table entry. */ |
13ae64f3 JJ |
968 | { |
969 | int tls_type, old_tls_type; | |
970 | ||
971 | switch (r_type) | |
972 | { | |
973 | default: | |
974 | case R_386_GOT32: tls_type = GOT_NORMAL; break; | |
975 | case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; | |
37e55690 JJ |
976 | case R_386_TLS_IE_32: |
977 | if (ELF32_R_TYPE (rel->r_info) == r_type) | |
978 | tls_type = GOT_TLS_IE_NEG; | |
979 | else | |
980 | /* If this is a GD->IE transition, we may use either of | |
981 | R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ | |
982 | tls_type = GOT_TLS_IE; | |
983 | break; | |
984 | case R_386_TLS_IE: | |
985 | case R_386_TLS_GOTIE: | |
986 | tls_type = GOT_TLS_IE_POS; break; | |
13ae64f3 JJ |
987 | } |
988 | ||
989 | if (h != NULL) | |
990 | { | |
991 | h->got.refcount += 1; | |
992 | old_tls_type = elf_i386_hash_entry(h)->tls_type; | |
993 | } | |
994 | else | |
995 | { | |
996 | bfd_signed_vma *local_got_refcounts; | |
997 | ||
998 | /* This is a global offset table entry for a local symbol. */ | |
999 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1000 | if (local_got_refcounts == NULL) | |
1001 | { | |
1002 | bfd_size_type size; | |
1003 | ||
1004 | size = symtab_hdr->sh_info; | |
1005 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); | |
1006 | local_got_refcounts = ((bfd_signed_vma *) | |
1007 | bfd_zalloc (abfd, size)); | |
1008 | if (local_got_refcounts == NULL) | |
b34976b6 | 1009 | return FALSE; |
13ae64f3 JJ |
1010 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
1011 | elf_i386_local_got_tls_type (abfd) | |
1012 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
1013 | } | |
1014 | local_got_refcounts[r_symndx] += 1; | |
1015 | old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx]; | |
1016 | } | |
1017 | ||
37e55690 JJ |
1018 | if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) |
1019 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1020 | /* If a TLS symbol is accessed using IE at least once, |
1021 | there is no point to use dynamic model for it. */ | |
37e55690 JJ |
1022 | else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
1023 | && (old_tls_type != GOT_TLS_GD | |
1024 | || (tls_type & GOT_TLS_IE) == 0)) | |
13ae64f3 | 1025 | { |
37e55690 JJ |
1026 | if ((old_tls_type & GOT_TLS_IE) && tls_type == GOT_TLS_GD) |
1027 | tls_type = old_tls_type; | |
13ae64f3 JJ |
1028 | else |
1029 | { | |
1030 | (*_bfd_error_handler) | |
1031 | (_("%s: `%s' accessed both as normal and thread local symbol"), | |
37e55690 JJ |
1032 | bfd_archive_filename (abfd), |
1033 | h ? h->root.root.string : "<local>"); | |
b34976b6 | 1034 | return FALSE; |
13ae64f3 JJ |
1035 | } |
1036 | } | |
1037 | ||
1038 | if (old_tls_type != tls_type) | |
1039 | { | |
1040 | if (h != NULL) | |
1041 | elf_i386_hash_entry (h)->tls_type = tls_type; | |
1042 | else | |
1043 | elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1044 | } | |
1045 | } | |
0ac8d2ca AM |
1046 | /* Fall through */ |
1047 | ||
1048 | case R_386_GOTOFF: | |
1049 | case R_386_GOTPC: | |
13ae64f3 | 1050 | create_got: |
0ac8d2ca AM |
1051 | if (htab->sgot == NULL) |
1052 | { | |
1053 | if (htab->elf.dynobj == NULL) | |
1054 | htab->elf.dynobj = abfd; | |
1055 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 1056 | return FALSE; |
0ac8d2ca | 1057 | } |
37e55690 JJ |
1058 | if (r_type != R_386_TLS_IE) |
1059 | break; | |
1060 | /* Fall through */ | |
252b5132 | 1061 | |
37e55690 JJ |
1062 | case R_386_TLS_LE_32: |
1063 | case R_386_TLS_LE: | |
1064 | if (!info->shared) | |
1065 | break; | |
bffbf940 | 1066 | info->flags |= DF_STATIC_TLS; |
b34976b6 | 1067 | /* Fall through */ |
252b5132 RH |
1068 | |
1069 | case R_386_32: | |
1070 | case R_386_PC32: | |
12d0ee4a | 1071 | if (h != NULL && !info->shared) |
6725bdbf | 1072 | { |
12d0ee4a | 1073 | /* If this reloc is in a read-only section, we might |
ebe50bae AM |
1074 | need a copy reloc. We can't check reliably at this |
1075 | stage whether the section is read-only, as input | |
1076 | sections have not yet been mapped to output sections. | |
1077 | Tentatively set the flag for now, and correct in | |
1078 | adjust_dynamic_symbol. */ | |
1079 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
12d0ee4a AM |
1080 | |
1081 | /* We may need a .plt entry if the function this reloc | |
1082 | refers to is in a shared lib. */ | |
51b64d56 | 1083 | h->plt.refcount += 1; |
6725bdbf | 1084 | } |
7843f00e | 1085 | |
252b5132 | 1086 | /* If we are creating a shared library, and this is a reloc |
f69da49f AM |
1087 | against a global symbol, or a non PC relative reloc |
1088 | against a local symbol, then we need to copy the reloc | |
1089 | into the shared library. However, if we are linking with | |
1090 | -Bsymbolic, we do not need to copy a reloc against a | |
1091 | global symbol which is defined in an object we are | |
1092 | including in the link (i.e., DEF_REGULAR is set). At | |
1093 | this point we have not seen all the input files, so it is | |
1094 | possible that DEF_REGULAR is not set now but will be set | |
1f655a09 L |
1095 | later (it is never cleared). In case of a weak definition, |
1096 | DEF_REGULAR may be cleared later by a strong definition in | |
ebe50bae | 1097 | a shared library. We account for that possibility below by |
1f655a09 L |
1098 | storing information in the relocs_copied field of the hash |
1099 | table entry. A similar situation occurs when creating | |
1100 | shared libraries and symbol visibility changes render the | |
12d0ee4a | 1101 | symbol local. |
56882138 | 1102 | |
12d0ee4a AM |
1103 | If on the other hand, we are creating an executable, we |
1104 | may need to keep relocations for symbols satisfied by a | |
1105 | dynamic library if we manage to avoid copy relocs for the | |
1106 | symbol. */ | |
1107 | if ((info->shared | |
1108 | && (sec->flags & SEC_ALLOC) != 0 | |
13ae64f3 | 1109 | && (r_type != R_386_PC32 |
12d0ee4a AM |
1110 | || (h != NULL |
1111 | && (! info->symbolic | |
1112 | || h->root.type == bfd_link_hash_defweak | |
1113 | || (h->elf_link_hash_flags | |
1114 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
a23b6845 AM |
1115 | || (ELIMINATE_COPY_RELOCS |
1116 | && !info->shared | |
12d0ee4a AM |
1117 | && (sec->flags & SEC_ALLOC) != 0 |
1118 | && h != NULL | |
12d0ee4a AM |
1119 | && (h->root.type == bfd_link_hash_defweak |
1120 | || (h->elf_link_hash_flags | |
1121 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
252b5132 | 1122 | { |
ec338859 AM |
1123 | struct elf_i386_dyn_relocs *p; |
1124 | struct elf_i386_dyn_relocs **head; | |
1125 | ||
12d0ee4a AM |
1126 | /* We must copy these reloc types into the output file. |
1127 | Create a reloc section in dynobj and make room for | |
1128 | this reloc. */ | |
252b5132 RH |
1129 | if (sreloc == NULL) |
1130 | { | |
1131 | const char *name; | |
0ac8d2ca | 1132 | bfd *dynobj; |
e92d460e AM |
1133 | unsigned int strndx = elf_elfheader (abfd)->e_shstrndx; |
1134 | unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name; | |
252b5132 | 1135 | |
e92d460e | 1136 | name = bfd_elf_string_from_elf_section (abfd, strndx, shnam); |
252b5132 | 1137 | if (name == NULL) |
b34976b6 | 1138 | return FALSE; |
252b5132 | 1139 | |
c8492176 L |
1140 | if (strncmp (name, ".rel", 4) != 0 |
1141 | || strcmp (bfd_get_section_name (abfd, sec), | |
1142 | name + 4) != 0) | |
1143 | { | |
0c715baa AM |
1144 | (*_bfd_error_handler) |
1145 | (_("%s: bad relocation section name `%s\'"), | |
1146 | bfd_archive_filename (abfd), name); | |
f5f31454 | 1147 | } |
252b5132 | 1148 | |
0ac8d2ca AM |
1149 | if (htab->elf.dynobj == NULL) |
1150 | htab->elf.dynobj = abfd; | |
1151 | ||
1152 | dynobj = htab->elf.dynobj; | |
252b5132 RH |
1153 | sreloc = bfd_get_section_by_name (dynobj, name); |
1154 | if (sreloc == NULL) | |
1155 | { | |
1156 | flagword flags; | |
1157 | ||
1158 | sreloc = bfd_make_section (dynobj, name); | |
1159 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
1160 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1161 | if ((sec->flags & SEC_ALLOC) != 0) | |
1162 | flags |= SEC_ALLOC | SEC_LOAD; | |
1163 | if (sreloc == NULL | |
1164 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
1165 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 1166 | return FALSE; |
252b5132 | 1167 | } |
0c715baa | 1168 | elf_section_data (sec)->sreloc = sreloc; |
252b5132 RH |
1169 | } |
1170 | ||
0c715baa AM |
1171 | /* If this is a global symbol, we count the number of |
1172 | relocations we need for this symbol. */ | |
1173 | if (h != NULL) | |
252b5132 | 1174 | { |
ec338859 | 1175 | head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs; |
0c715baa AM |
1176 | } |
1177 | else | |
1178 | { | |
ec338859 AM |
1179 | /* Track dynamic relocs needed for local syms too. |
1180 | We really need local syms available to do this | |
1181 | easily. Oh well. */ | |
1182 | ||
1183 | asection *s; | |
1184 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
1185 | sec, r_symndx); | |
1186 | if (s == NULL) | |
b34976b6 | 1187 | return FALSE; |
ec338859 AM |
1188 | |
1189 | head = ((struct elf_i386_dyn_relocs **) | |
1190 | &elf_section_data (s)->local_dynrel); | |
1191 | } | |
1192 | ||
1193 | p = *head; | |
1194 | if (p == NULL || p->sec != sec) | |
1195 | { | |
1196 | bfd_size_type amt = sizeof *p; | |
1197 | p = ((struct elf_i386_dyn_relocs *) | |
1198 | bfd_alloc (htab->elf.dynobj, amt)); | |
1199 | if (p == NULL) | |
b34976b6 | 1200 | return FALSE; |
ec338859 AM |
1201 | p->next = *head; |
1202 | *head = p; | |
1203 | p->sec = sec; | |
1204 | p->count = 0; | |
1205 | p->pc_count = 0; | |
252b5132 | 1206 | } |
ec338859 AM |
1207 | |
1208 | p->count += 1; | |
13ae64f3 | 1209 | if (r_type == R_386_PC32) |
ec338859 | 1210 | p->pc_count += 1; |
252b5132 | 1211 | } |
252b5132 RH |
1212 | break; |
1213 | ||
1214 | /* This relocation describes the C++ object vtable hierarchy. | |
1215 | Reconstruct it for later use during GC. */ | |
1216 | case R_386_GNU_VTINHERIT: | |
1217 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1218 | return FALSE; |
252b5132 RH |
1219 | break; |
1220 | ||
1221 | /* This relocation describes which C++ vtable entries are actually | |
1222 | used. Record for later use during GC. */ | |
1223 | case R_386_GNU_VTENTRY: | |
1224 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1225 | return FALSE; |
252b5132 RH |
1226 | break; |
1227 | ||
1228 | default: | |
1229 | break; | |
1230 | } | |
1231 | } | |
1232 | ||
b34976b6 | 1233 | return TRUE; |
252b5132 RH |
1234 | } |
1235 | ||
1236 | /* Return the section that should be marked against GC for a given | |
1237 | relocation. */ | |
1238 | ||
1239 | static asection * | |
1e2f5b6e AM |
1240 | elf_i386_gc_mark_hook (sec, info, rel, h, sym) |
1241 | asection *sec; | |
7442e600 | 1242 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1243 | Elf_Internal_Rela *rel; |
1244 | struct elf_link_hash_entry *h; | |
1245 | Elf_Internal_Sym *sym; | |
1246 | { | |
1247 | if (h != NULL) | |
1248 | { | |
1249 | switch (ELF32_R_TYPE (rel->r_info)) | |
1250 | { | |
1251 | case R_386_GNU_VTINHERIT: | |
1252 | case R_386_GNU_VTENTRY: | |
1253 | break; | |
1254 | ||
1255 | default: | |
1256 | switch (h->root.type) | |
1257 | { | |
1258 | case bfd_link_hash_defined: | |
1259 | case bfd_link_hash_defweak: | |
1260 | return h->root.u.def.section; | |
1261 | ||
1262 | case bfd_link_hash_common: | |
1263 | return h->root.u.c.p->section; | |
1264 | ||
1265 | default: | |
1266 | break; | |
1267 | } | |
1268 | } | |
1269 | } | |
1270 | else | |
1e2f5b6e | 1271 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
1272 | |
1273 | return NULL; | |
1274 | } | |
1275 | ||
1276 | /* Update the got entry reference counts for the section being removed. */ | |
1277 | ||
b34976b6 | 1278 | static bfd_boolean |
252b5132 | 1279 | elf_i386_gc_sweep_hook (abfd, info, sec, relocs) |
dd5724d5 | 1280 | bfd *abfd; |
6725bdbf | 1281 | struct bfd_link_info *info; |
dd5724d5 AM |
1282 | asection *sec; |
1283 | const Elf_Internal_Rela *relocs; | |
252b5132 | 1284 | { |
dd5724d5 AM |
1285 | Elf_Internal_Shdr *symtab_hdr; |
1286 | struct elf_link_hash_entry **sym_hashes; | |
1287 | bfd_signed_vma *local_got_refcounts; | |
1288 | const Elf_Internal_Rela *rel, *relend; | |
dd5724d5 | 1289 | |
ec338859 | 1290 | elf_section_data (sec)->local_dynrel = NULL; |
dd5724d5 | 1291 | |
6725bdbf AM |
1292 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1293 | sym_hashes = elf_sym_hashes (abfd); | |
1294 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
dd5724d5 AM |
1295 | |
1296 | relend = relocs + sec->reloc_count; | |
1297 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1298 | { |
1299 | unsigned long r_symndx; | |
1300 | unsigned int r_type; | |
1301 | struct elf_link_hash_entry *h = NULL; | |
37e55690 | 1302 | |
26e41594 AM |
1303 | r_symndx = ELF32_R_SYM (rel->r_info); |
1304 | if (r_symndx >= symtab_hdr->sh_info) | |
1305 | { | |
1306 | struct elf_i386_link_hash_entry *eh; | |
1307 | struct elf_i386_dyn_relocs **pp; | |
1308 | struct elf_i386_dyn_relocs *p; | |
dd5724d5 | 1309 | |
26e41594 AM |
1310 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1311 | eh = (struct elf_i386_link_hash_entry *) h; | |
0c715baa | 1312 | |
26e41594 AM |
1313 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1314 | if (p->sec == sec) | |
1315 | { | |
1316 | /* Everything must go for SEC. */ | |
1317 | *pp = p->next; | |
1318 | break; | |
1319 | } | |
1320 | } | |
0c715baa | 1321 | |
26e41594 AM |
1322 | r_type = ELF32_R_TYPE (rel->r_info); |
1323 | r_type = elf_i386_tls_transition (info, r_type, h != NULL); | |
1324 | switch (r_type) | |
1325 | { | |
1326 | case R_386_TLS_LDM: | |
1327 | if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0) | |
1328 | elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1; | |
1329 | break; | |
0c715baa | 1330 | |
26e41594 AM |
1331 | case R_386_TLS_GD: |
1332 | case R_386_TLS_IE_32: | |
1333 | case R_386_TLS_IE: | |
1334 | case R_386_TLS_GOTIE: | |
1335 | case R_386_GOT32: | |
1336 | if (h != NULL) | |
1337 | { | |
1338 | if (h->got.refcount > 0) | |
1339 | h->got.refcount -= 1; | |
1340 | } | |
1341 | else if (local_got_refcounts != NULL) | |
1342 | { | |
1343 | if (local_got_refcounts[r_symndx] > 0) | |
1344 | local_got_refcounts[r_symndx] -= 1; | |
1345 | } | |
1346 | break; | |
0c715baa | 1347 | |
26e41594 AM |
1348 | case R_386_32: |
1349 | case R_386_PC32: | |
1350 | if (info->shared) | |
1351 | break; | |
1352 | /* Fall through */ | |
6725bdbf | 1353 | |
26e41594 AM |
1354 | case R_386_PLT32: |
1355 | if (h != NULL) | |
1356 | { | |
1357 | if (h->plt.refcount > 0) | |
1358 | h->plt.refcount -= 1; | |
1359 | } | |
1360 | break; | |
dd5724d5 | 1361 | |
26e41594 AM |
1362 | default: |
1363 | break; | |
1364 | } | |
1365 | } | |
252b5132 | 1366 | |
b34976b6 | 1367 | return TRUE; |
252b5132 RH |
1368 | } |
1369 | ||
1370 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1371 | regular object. The current definition is in some section of the | |
1372 | dynamic object, but we're not including those sections. We have to | |
1373 | change the definition to something the rest of the link can | |
1374 | understand. */ | |
1375 | ||
b34976b6 | 1376 | static bfd_boolean |
252b5132 RH |
1377 | elf_i386_adjust_dynamic_symbol (info, h) |
1378 | struct bfd_link_info *info; | |
1379 | struct elf_link_hash_entry *h; | |
1380 | { | |
6725bdbf | 1381 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1382 | asection *s; |
1383 | unsigned int power_of_two; | |
1384 | ||
252b5132 RH |
1385 | /* If this is a function, put it in the procedure linkage table. We |
1386 | will fill in the contents of the procedure linkage table later, | |
1387 | when we know the address of the .got section. */ | |
1388 | if (h->type == STT_FUNC | |
1389 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1390 | { | |
6725bdbf AM |
1391 | if (h->plt.refcount <= 0 |
1392 | || (! info->shared | |
1393 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 | |
f9cd9119 MS |
1394 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0 |
1395 | && h->root.type != bfd_link_hash_undefweak | |
1396 | && h->root.type != bfd_link_hash_undefined)) | |
252b5132 RH |
1397 | { |
1398 | /* This case can occur if we saw a PLT32 reloc in an input | |
dd5724d5 AM |
1399 | file, but the symbol was never referred to by a dynamic |
1400 | object, or if all references were garbage collected. In | |
1401 | such a case, we don't actually need to build a procedure | |
1402 | linkage table, and we can just do a PC32 reloc instead. */ | |
bbd7ec4a | 1403 | h->plt.offset = (bfd_vma) -1; |
dd5724d5 | 1404 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
252b5132 RH |
1405 | } |
1406 | ||
b34976b6 | 1407 | return TRUE; |
252b5132 | 1408 | } |
6725bdbf AM |
1409 | else |
1410 | /* It's possible that we incorrectly decided a .plt reloc was | |
1411 | needed for an R_386_PC32 reloc to a non-function sym in | |
1412 | check_relocs. We can't decide accurately between function and | |
1413 | non-function syms in check-relocs; Objects loaded later in | |
1414 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1415 | h->plt.offset = (bfd_vma) -1; |
252b5132 RH |
1416 | |
1417 | /* If this is a weak symbol, and there is a real definition, the | |
1418 | processor independent code will have arranged for us to see the | |
1419 | real definition first, and we can just use the same value. */ | |
1420 | if (h->weakdef != NULL) | |
1421 | { | |
1422 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1423 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1424 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1425 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
a23b6845 AM |
1426 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
1427 | h->elf_link_hash_flags | |
1428 | = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF) | |
1429 | | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF)); | |
b34976b6 | 1430 | return TRUE; |
252b5132 RH |
1431 | } |
1432 | ||
1433 | /* This is a reference to a symbol defined by a dynamic object which | |
1434 | is not a function. */ | |
1435 | ||
1436 | /* If we are creating a shared library, we must presume that the | |
1437 | only references to the symbol are via the global offset table. | |
1438 | For such cases we need not do anything here; the relocations will | |
1439 | be handled correctly by relocate_section. */ | |
1440 | if (info->shared) | |
b34976b6 | 1441 | return TRUE; |
252b5132 | 1442 | |
7843f00e ILT |
1443 | /* If there are no references to this symbol that do not use the |
1444 | GOT, we don't need to generate a copy reloc. */ | |
1445 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
b34976b6 | 1446 | return TRUE; |
7843f00e | 1447 | |
8bd621d8 AM |
1448 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1449 | if (info->nocopyreloc) | |
1450 | { | |
1451 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
b34976b6 | 1452 | return TRUE; |
8bd621d8 AM |
1453 | } |
1454 | ||
a23b6845 | 1455 | if (ELIMINATE_COPY_RELOCS) |
ebe50bae | 1456 | { |
a23b6845 AM |
1457 | struct elf_i386_link_hash_entry * eh; |
1458 | struct elf_i386_dyn_relocs *p; | |
ebe50bae | 1459 | |
a23b6845 AM |
1460 | eh = (struct elf_i386_link_hash_entry *) h; |
1461 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1462 | { | |
1463 | s = p->sec->output_section; | |
1464 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1465 | break; | |
1466 | } | |
1467 | ||
1468 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1469 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1470 | if (p == NULL) | |
1471 | { | |
1472 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
1473 | return TRUE; | |
1474 | } | |
ebe50bae AM |
1475 | } |
1476 | ||
252b5132 RH |
1477 | /* We must allocate the symbol in our .dynbss section, which will |
1478 | become part of the .bss section of the executable. There will be | |
1479 | an entry for this symbol in the .dynsym section. The dynamic | |
1480 | object will contain position independent code, so all references | |
1481 | from the dynamic object to this symbol will go through the global | |
1482 | offset table. The dynamic linker will use the .dynsym entry to | |
1483 | determine the address it must put in the global offset table, so | |
1484 | both the dynamic object and the regular object will refer to the | |
1485 | same memory location for the variable. */ | |
1486 | ||
0ac8d2ca | 1487 | htab = elf_i386_hash_table (info); |
252b5132 RH |
1488 | |
1489 | /* We must generate a R_386_COPY reloc to tell the dynamic linker to | |
1490 | copy the initial value out of the dynamic object and into the | |
0ac8d2ca | 1491 | runtime process image. */ |
252b5132 RH |
1492 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1493 | { | |
0ac8d2ca | 1494 | htab->srelbss->_raw_size += sizeof (Elf32_External_Rel); |
252b5132 RH |
1495 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
1496 | } | |
1497 | ||
1498 | /* We need to figure out the alignment required for this symbol. I | |
1499 | have no idea how ELF linkers handle this. */ | |
1500 | power_of_two = bfd_log2 (h->size); | |
1501 | if (power_of_two > 3) | |
1502 | power_of_two = 3; | |
1503 | ||
1504 | /* Apply the required alignment. */ | |
0ac8d2ca AM |
1505 | s = htab->sdynbss; |
1506 | s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two)); | |
1507 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
252b5132 | 1508 | { |
0ac8d2ca | 1509 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 1510 | return FALSE; |
252b5132 RH |
1511 | } |
1512 | ||
1513 | /* Define the symbol as being at this point in the section. */ | |
1514 | h->root.u.def.section = s; | |
1515 | h->root.u.def.value = s->_raw_size; | |
1516 | ||
1517 | /* Increment the section size to make room for the symbol. */ | |
1518 | s->_raw_size += h->size; | |
1519 | ||
b34976b6 | 1520 | return TRUE; |
252b5132 RH |
1521 | } |
1522 | ||
6725bdbf AM |
1523 | /* This is the condition under which elf_i386_finish_dynamic_symbol |
1524 | will be called from elflink.h. If elflink.h doesn't call our | |
1525 | finish_dynamic_symbol routine, we'll need to do something about | |
1526 | initializing any .plt and .got entries in elf_i386_relocate_section. */ | |
26e41594 | 1527 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ |
6725bdbf | 1528 | ((DYN) \ |
26e41594 | 1529 | && ((SHARED) \ |
6725bdbf AM |
1530 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ |
1531 | && ((H)->dynindx != -1 \ | |
1532 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
1533 | ||
1534 | /* Allocate space in .plt, .got and associated reloc sections for | |
0c715baa | 1535 | dynamic relocs. */ |
6725bdbf | 1536 | |
b34976b6 | 1537 | static bfd_boolean |
0c715baa | 1538 | allocate_dynrelocs (h, inf) |
6725bdbf AM |
1539 | struct elf_link_hash_entry *h; |
1540 | PTR inf; | |
1541 | { | |
1542 | struct bfd_link_info *info; | |
1543 | struct elf_i386_link_hash_table *htab; | |
5a15f56f | 1544 | struct elf_i386_link_hash_entry *eh; |
0c715baa | 1545 | struct elf_i386_dyn_relocs *p; |
6725bdbf | 1546 | |
e92d460e | 1547 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1548 | return TRUE; |
6725bdbf | 1549 | |
e92d460e AM |
1550 | if (h->root.type == bfd_link_hash_warning) |
1551 | /* When warning symbols are created, they **replace** the "real" | |
1552 | entry in the hash table, thus we never get to see the real | |
1553 | symbol in a hash traversal. So look at it now. */ | |
1554 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1555 | ||
6725bdbf AM |
1556 | info = (struct bfd_link_info *) inf; |
1557 | htab = elf_i386_hash_table (info); | |
1558 | ||
ebe50bae | 1559 | if (htab->elf.dynamic_sections_created |
6725bdbf AM |
1560 | && h->plt.refcount > 0) |
1561 | { | |
5a15f56f AM |
1562 | /* Make sure this symbol is output as a dynamic symbol. |
1563 | Undefined weak syms won't yet be marked as dynamic. */ | |
1564 | if (h->dynindx == -1 | |
1565 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1566 | { | |
1567 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1568 | return FALSE; |
5a15f56f AM |
1569 | } |
1570 | ||
26e41594 AM |
1571 | if (info->shared |
1572 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
ced53ee5 | 1573 | { |
0ac8d2ca | 1574 | asection *s = htab->splt; |
6725bdbf | 1575 | |
ced53ee5 AM |
1576 | /* If this is the first .plt entry, make room for the special |
1577 | first entry. */ | |
1578 | if (s->_raw_size == 0) | |
1579 | s->_raw_size += PLT_ENTRY_SIZE; | |
6725bdbf | 1580 | |
ced53ee5 | 1581 | h->plt.offset = s->_raw_size; |
6725bdbf | 1582 | |
ced53ee5 AM |
1583 | /* If this symbol is not defined in a regular file, and we are |
1584 | not generating a shared library, then set the symbol to this | |
1585 | location in the .plt. This is required to make function | |
1586 | pointers compare as equal between the normal executable and | |
1587 | the shared library. */ | |
1588 | if (! info->shared | |
1589 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1590 | { | |
1591 | h->root.u.def.section = s; | |
1592 | h->root.u.def.value = h->plt.offset; | |
1593 | } | |
6725bdbf | 1594 | |
ced53ee5 AM |
1595 | /* Make room for this entry. */ |
1596 | s->_raw_size += PLT_ENTRY_SIZE; | |
6725bdbf | 1597 | |
ced53ee5 AM |
1598 | /* We also need to make an entry in the .got.plt section, which |
1599 | will be placed in the .got section by the linker script. */ | |
0ac8d2ca | 1600 | htab->sgotplt->_raw_size += 4; |
6725bdbf | 1601 | |
6725bdbf | 1602 | /* We also need to make an entry in the .rel.plt section. */ |
0ac8d2ca | 1603 | htab->srelplt->_raw_size += sizeof (Elf32_External_Rel); |
6725bdbf | 1604 | } |
ced53ee5 AM |
1605 | else |
1606 | { | |
51b64d56 | 1607 | h->plt.offset = (bfd_vma) -1; |
ced53ee5 AM |
1608 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
1609 | } | |
6725bdbf AM |
1610 | } |
1611 | else | |
1612 | { | |
51b64d56 | 1613 | h->plt.offset = (bfd_vma) -1; |
6725bdbf AM |
1614 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
1615 | } | |
1616 | ||
37e55690 | 1617 | /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, |
13ae64f3 JJ |
1618 | make it a R_386_TLS_LE_32 requiring no TLS entry. */ |
1619 | if (h->got.refcount > 0 | |
1620 | && !info->shared | |
1621 | && h->dynindx == -1 | |
37e55690 | 1622 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE)) |
cedb70c5 | 1623 | h->got.offset = (bfd_vma) -1; |
13ae64f3 | 1624 | else if (h->got.refcount > 0) |
6725bdbf | 1625 | { |
0ac8d2ca | 1626 | asection *s; |
b34976b6 | 1627 | bfd_boolean dyn; |
13ae64f3 | 1628 | int tls_type = elf_i386_hash_entry(h)->tls_type; |
6725bdbf | 1629 | |
5a15f56f AM |
1630 | /* Make sure this symbol is output as a dynamic symbol. |
1631 | Undefined weak syms won't yet be marked as dynamic. */ | |
1632 | if (h->dynindx == -1 | |
1633 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1634 | { | |
1635 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1636 | return FALSE; |
5a15f56f AM |
1637 | } |
1638 | ||
6725bdbf AM |
1639 | s = htab->sgot; |
1640 | h->got.offset = s->_raw_size; | |
1641 | s->_raw_size += 4; | |
13ae64f3 | 1642 | /* R_386_TLS_GD needs 2 consecutive GOT slots. */ |
37e55690 | 1643 | if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE_BOTH) |
13ae64f3 | 1644 | s->_raw_size += 4; |
ebe50bae | 1645 | dyn = htab->elf.dynamic_sections_created; |
13ae64f3 | 1646 | /* R_386_TLS_IE_32 needs one dynamic relocation, |
37e55690 JJ |
1647 | R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, |
1648 | (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we | |
1649 | need two), R_386_TLS_GD needs one if local symbol and two if | |
1650 | global. */ | |
1651 | if (tls_type == GOT_TLS_IE_BOTH) | |
1652 | htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
1653 | else if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1654 | || (tls_type & GOT_TLS_IE)) | |
13ae64f3 JJ |
1655 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); |
1656 | else if (tls_type == GOT_TLS_GD) | |
1657 | htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
26e41594 AM |
1658 | else if (info->shared |
1659 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
6725bdbf AM |
1660 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); |
1661 | } | |
1662 | else | |
51b64d56 | 1663 | h->got.offset = (bfd_vma) -1; |
6725bdbf | 1664 | |
5a15f56f AM |
1665 | eh = (struct elf_i386_link_hash_entry *) h; |
1666 | if (eh->dyn_relocs == NULL) | |
b34976b6 | 1667 | return TRUE; |
5a15f56f | 1668 | |
0c715baa AM |
1669 | /* In the shared -Bsymbolic case, discard space allocated for |
1670 | dynamic pc-relative relocs against symbols which turn out to be | |
1671 | defined in regular objects. For the normal shared case, discard | |
0ac8d2ca AM |
1672 | space for pc-relative relocs that have become local due to symbol |
1673 | visibility changes. */ | |
0c715baa AM |
1674 | |
1675 | if (info->shared) | |
5a15f56f | 1676 | { |
0c715baa AM |
1677 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 |
1678 | && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 | |
1679 | || info->symbolic)) | |
5a15f56f | 1680 | { |
0c715baa AM |
1681 | struct elf_i386_dyn_relocs **pp; |
1682 | ||
1683 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1684 | { | |
1685 | p->count -= p->pc_count; | |
1686 | p->pc_count = 0; | |
1687 | if (p->count == 0) | |
1688 | *pp = p->next; | |
1689 | else | |
1690 | pp = &p->next; | |
1691 | } | |
5a15f56f | 1692 | } |
0c715baa | 1693 | } |
a23b6845 | 1694 | else if (ELIMINATE_COPY_RELOCS) |
0c715baa AM |
1695 | { |
1696 | /* For the non-shared case, discard space for relocs against | |
1697 | symbols which turn out to need copy relocs or are not | |
1698 | dynamic. */ | |
1699 | ||
1700 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
1701 | && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1702 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
ebe50bae | 1703 | || (htab->elf.dynamic_sections_created |
0c715baa AM |
1704 | && (h->root.type == bfd_link_hash_undefweak |
1705 | || h->root.type == bfd_link_hash_undefined)))) | |
1706 | { | |
1707 | /* Make sure this symbol is output as a dynamic symbol. | |
1708 | Undefined weak syms won't yet be marked as dynamic. */ | |
1709 | if (h->dynindx == -1 | |
1710 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1711 | { | |
1712 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1713 | return FALSE; |
0c715baa | 1714 | } |
5a15f56f | 1715 | |
0c715baa AM |
1716 | /* If that succeeded, we know we'll be keeping all the |
1717 | relocs. */ | |
1718 | if (h->dynindx != -1) | |
1719 | goto keep; | |
1720 | } | |
1721 | ||
1722 | eh->dyn_relocs = NULL; | |
1723 | ||
ec338859 | 1724 | keep: ; |
5a15f56f AM |
1725 | } |
1726 | ||
0c715baa AM |
1727 | /* Finally, allocate space. */ |
1728 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
12d0ee4a | 1729 | { |
0c715baa AM |
1730 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
1731 | sreloc->_raw_size += p->count * sizeof (Elf32_External_Rel); | |
12d0ee4a AM |
1732 | } |
1733 | ||
b34976b6 | 1734 | return TRUE; |
6725bdbf AM |
1735 | } |
1736 | ||
0c715baa AM |
1737 | /* Find any dynamic relocs that apply to read-only sections. */ |
1738 | ||
b34976b6 | 1739 | static bfd_boolean |
0c715baa AM |
1740 | readonly_dynrelocs (h, inf) |
1741 | struct elf_link_hash_entry *h; | |
1742 | PTR inf; | |
1743 | { | |
1744 | struct elf_i386_link_hash_entry *eh; | |
1745 | struct elf_i386_dyn_relocs *p; | |
1746 | ||
e92d460e AM |
1747 | if (h->root.type == bfd_link_hash_warning) |
1748 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1749 | ||
0c715baa AM |
1750 | eh = (struct elf_i386_link_hash_entry *) h; |
1751 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1752 | { | |
1753 | asection *s = p->sec->output_section; | |
1754 | ||
1755 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1756 | { | |
1757 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
1758 | ||
1759 | info->flags |= DF_TEXTREL; | |
1760 | ||
1761 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 1762 | return FALSE; |
0c715baa AM |
1763 | } |
1764 | } | |
b34976b6 | 1765 | return TRUE; |
0c715baa AM |
1766 | } |
1767 | ||
252b5132 RH |
1768 | /* Set the sizes of the dynamic sections. */ |
1769 | ||
b34976b6 | 1770 | static bfd_boolean |
252b5132 | 1771 | elf_i386_size_dynamic_sections (output_bfd, info) |
db6751f2 | 1772 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1773 | struct bfd_link_info *info; |
1774 | { | |
6725bdbf | 1775 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1776 | bfd *dynobj; |
1777 | asection *s; | |
b34976b6 | 1778 | bfd_boolean relocs; |
0c715baa | 1779 | bfd *ibfd; |
252b5132 | 1780 | |
6725bdbf | 1781 | htab = elf_i386_hash_table (info); |
ebe50bae | 1782 | dynobj = htab->elf.dynobj; |
ffb2e45b AM |
1783 | if (dynobj == NULL) |
1784 | abort (); | |
252b5132 | 1785 | |
ebe50bae | 1786 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
1787 | { |
1788 | /* Set the contents of the .interp section to the interpreter. */ | |
1789 | if (! info->shared) | |
1790 | { | |
1791 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
ffb2e45b AM |
1792 | if (s == NULL) |
1793 | abort (); | |
252b5132 RH |
1794 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
1795 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1796 | } | |
161d71a6 | 1797 | } |
6725bdbf | 1798 | |
0c715baa AM |
1799 | /* Set up .got offsets for local syms, and space for local dynamic |
1800 | relocs. */ | |
1801 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
161d71a6 L |
1802 | { |
1803 | bfd_signed_vma *local_got; | |
1804 | bfd_signed_vma *end_local_got; | |
13ae64f3 | 1805 | char *local_tls_type; |
161d71a6 L |
1806 | bfd_size_type locsymcount; |
1807 | Elf_Internal_Shdr *symtab_hdr; | |
1808 | asection *srel; | |
6725bdbf | 1809 | |
0c715baa | 1810 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
161d71a6 | 1811 | continue; |
6725bdbf | 1812 | |
0c715baa AM |
1813 | for (s = ibfd->sections; s != NULL; s = s->next) |
1814 | { | |
ec338859 | 1815 | struct elf_i386_dyn_relocs *p; |
0c715baa | 1816 | |
ec338859 AM |
1817 | for (p = *((struct elf_i386_dyn_relocs **) |
1818 | &elf_section_data (s)->local_dynrel); | |
1819 | p != NULL; | |
1820 | p = p->next) | |
0c715baa | 1821 | { |
ec338859 AM |
1822 | if (!bfd_is_abs_section (p->sec) |
1823 | && bfd_is_abs_section (p->sec->output_section)) | |
1824 | { | |
1825 | /* Input section has been discarded, either because | |
1826 | it is a copy of a linkonce section or due to | |
1827 | linker script /DISCARD/, so we'll be discarding | |
1828 | the relocs too. */ | |
1829 | } | |
248866a8 | 1830 | else if (p->count != 0) |
ec338859 AM |
1831 | { |
1832 | srel = elf_section_data (p->sec)->sreloc; | |
1833 | srel->_raw_size += p->count * sizeof (Elf32_External_Rel); | |
248866a8 AM |
1834 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1835 | info->flags |= DF_TEXTREL; | |
ec338859 | 1836 | } |
0c715baa AM |
1837 | } |
1838 | } | |
1839 | ||
1840 | local_got = elf_local_got_refcounts (ibfd); | |
161d71a6 L |
1841 | if (!local_got) |
1842 | continue; | |
6725bdbf | 1843 | |
0c715baa | 1844 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
161d71a6 L |
1845 | locsymcount = symtab_hdr->sh_info; |
1846 | end_local_got = local_got + locsymcount; | |
13ae64f3 | 1847 | local_tls_type = elf_i386_local_got_tls_type (ibfd); |
161d71a6 L |
1848 | s = htab->sgot; |
1849 | srel = htab->srelgot; | |
13ae64f3 | 1850 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
161d71a6 L |
1851 | { |
1852 | if (*local_got > 0) | |
6725bdbf | 1853 | { |
161d71a6 L |
1854 | *local_got = s->_raw_size; |
1855 | s->_raw_size += 4; | |
37e55690 JJ |
1856 | if (*local_tls_type == GOT_TLS_GD |
1857 | || *local_tls_type == GOT_TLS_IE_BOTH) | |
13ae64f3 JJ |
1858 | s->_raw_size += 4; |
1859 | if (info->shared | |
1860 | || *local_tls_type == GOT_TLS_GD | |
37e55690 JJ |
1861 | || (*local_tls_type & GOT_TLS_IE)) |
1862 | { | |
1863 | if (*local_tls_type == GOT_TLS_IE_BOTH) | |
1864 | srel->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
1865 | else | |
1866 | srel->_raw_size += sizeof (Elf32_External_Rel); | |
1867 | } | |
6725bdbf | 1868 | } |
161d71a6 L |
1869 | else |
1870 | *local_got = (bfd_vma) -1; | |
6725bdbf | 1871 | } |
252b5132 | 1872 | } |
6725bdbf | 1873 | |
13ae64f3 JJ |
1874 | if (htab->tls_ldm_got.refcount > 0) |
1875 | { | |
1876 | /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM | |
1877 | relocs. */ | |
1878 | htab->tls_ldm_got.offset = htab->sgot->_raw_size; | |
1879 | htab->sgot->_raw_size += 8; | |
1880 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); | |
1881 | } | |
1882 | else | |
1883 | htab->tls_ldm_got.offset = -1; | |
1884 | ||
0c715baa AM |
1885 | /* Allocate global sym .plt and .got entries, and space for global |
1886 | sym dynamic relocs. */ | |
ebe50bae | 1887 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); |
252b5132 | 1888 | |
5a15f56f AM |
1889 | /* We now have determined the sizes of the various dynamic sections. |
1890 | Allocate memory for them. */ | |
b34976b6 | 1891 | relocs = FALSE; |
252b5132 RH |
1892 | for (s = dynobj->sections; s != NULL; s = s->next) |
1893 | { | |
252b5132 RH |
1894 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
1895 | continue; | |
1896 | ||
6725bdbf AM |
1897 | if (s == htab->splt |
1898 | || s == htab->sgot | |
1899 | || s == htab->sgotplt) | |
252b5132 | 1900 | { |
6725bdbf AM |
1901 | /* Strip this section if we don't need it; see the |
1902 | comment below. */ | |
252b5132 | 1903 | } |
6725bdbf | 1904 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rel", 4) == 0) |
252b5132 | 1905 | { |
0ac8d2ca | 1906 | if (s->_raw_size != 0 && s != htab->srelplt) |
b34976b6 | 1907 | relocs = TRUE; |
252b5132 | 1908 | |
0ac8d2ca AM |
1909 | /* We use the reloc_count field as a counter if we need |
1910 | to copy relocs into the output file. */ | |
1911 | s->reloc_count = 0; | |
252b5132 | 1912 | } |
6725bdbf | 1913 | else |
252b5132 RH |
1914 | { |
1915 | /* It's not one of our sections, so don't allocate space. */ | |
1916 | continue; | |
1917 | } | |
1918 | ||
6725bdbf | 1919 | if (s->_raw_size == 0) |
252b5132 | 1920 | { |
0ac8d2ca AM |
1921 | /* If we don't need this section, strip it from the |
1922 | output file. This is mostly to handle .rel.bss and | |
1923 | .rel.plt. We must create both sections in | |
1924 | create_dynamic_sections, because they must be created | |
1925 | before the linker maps input sections to output | |
1926 | sections. The linker does that before | |
1927 | adjust_dynamic_symbol is called, and it is that | |
1928 | function which decides whether anything needs to go | |
1929 | into these sections. */ | |
1930 | ||
7f8d5fc9 | 1931 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
1932 | continue; |
1933 | } | |
1934 | ||
f69da49f AM |
1935 | /* Allocate memory for the section contents. We use bfd_zalloc |
1936 | here in case unused entries are not reclaimed before the | |
1937 | section's contents are written out. This should not happen, | |
1938 | but this way if it does, we get a R_386_NONE reloc instead | |
1939 | of garbage. */ | |
7a9af8c4 | 1940 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
6725bdbf | 1941 | if (s->contents == NULL) |
b34976b6 | 1942 | return FALSE; |
252b5132 RH |
1943 | } |
1944 | ||
ebe50bae | 1945 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
1946 | { |
1947 | /* Add some entries to the .dynamic section. We fill in the | |
1948 | values later, in elf_i386_finish_dynamic_sections, but we | |
1949 | must add the entries now so that we get the correct size for | |
1950 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1951 | dynamic linker and used by the debugger. */ | |
dc810e39 AM |
1952 | #define add_dynamic_entry(TAG, VAL) \ |
1953 | bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
1954 | ||
252b5132 RH |
1955 | if (! info->shared) |
1956 | { | |
dc810e39 | 1957 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1958 | return FALSE; |
252b5132 RH |
1959 | } |
1960 | ||
6725bdbf | 1961 | if (htab->splt->_raw_size != 0) |
252b5132 | 1962 | { |
dc810e39 AM |
1963 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1964 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1965 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
1966 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1967 | return FALSE; |
252b5132 RH |
1968 | } |
1969 | ||
1970 | if (relocs) | |
1971 | { | |
dc810e39 AM |
1972 | if (!add_dynamic_entry (DT_REL, 0) |
1973 | || !add_dynamic_entry (DT_RELSZ, 0) | |
1974 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 1975 | return FALSE; |
252b5132 | 1976 | |
0c715baa AM |
1977 | /* If any dynamic relocs apply to a read-only section, |
1978 | then we need a DT_TEXTREL entry. */ | |
248866a8 AM |
1979 | if ((info->flags & DF_TEXTREL) == 0) |
1980 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
1981 | (PTR) info); | |
0c715baa AM |
1982 | |
1983 | if ((info->flags & DF_TEXTREL) != 0) | |
1984 | { | |
1985 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1986 | return FALSE; |
0c715baa | 1987 | } |
252b5132 RH |
1988 | } |
1989 | } | |
dc810e39 | 1990 | #undef add_dynamic_entry |
252b5132 | 1991 | |
b34976b6 | 1992 | return TRUE; |
252b5132 RH |
1993 | } |
1994 | ||
38701953 AM |
1995 | /* Set the correct type for an x86 ELF section. We do this by the |
1996 | section name, which is a hack, but ought to work. */ | |
1997 | ||
b34976b6 | 1998 | static bfd_boolean |
38701953 AM |
1999 | elf_i386_fake_sections (abfd, hdr, sec) |
2000 | bfd *abfd ATTRIBUTE_UNUSED; | |
947216bf | 2001 | Elf_Internal_Shdr *hdr; |
38701953 AM |
2002 | asection *sec; |
2003 | { | |
2004 | register const char *name; | |
2005 | ||
2006 | name = bfd_get_section_name (abfd, sec); | |
2007 | ||
2008 | /* This is an ugly, but unfortunately necessary hack that is | |
2009 | needed when producing EFI binaries on x86. It tells | |
2010 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
2011 | containing ELF relocation info. We need this hack in order to | |
2012 | be able to generate ELF binaries that can be translated into | |
2013 | EFI applications (which are essentially COFF objects). Those | |
2014 | files contain a COFF ".reloc" section inside an ELFNN object, | |
2015 | which would normally cause BFD to segfault because it would | |
2016 | attempt to interpret this section as containing relocation | |
2017 | entries for section "oc". With this hack enabled, ".reloc" | |
2018 | will be treated as a normal data section, which will avoid the | |
2019 | segfault. However, you won't be able to create an ELFNN binary | |
2020 | with a section named "oc" that needs relocations, but that's | |
2021 | the kind of ugly side-effects you get when detecting section | |
2022 | types based on their names... In practice, this limitation is | |
2023 | unlikely to bite. */ | |
2024 | if (strcmp (name, ".reloc") == 0) | |
2025 | hdr->sh_type = SHT_PROGBITS; | |
2026 | ||
b34976b6 | 2027 | return TRUE; |
38701953 AM |
2028 | } |
2029 | ||
13ae64f3 JJ |
2030 | /* Return the base VMA address which should be subtracted from real addresses |
2031 | when resolving @dtpoff relocation. | |
2032 | This is PT_TLS segment p_vaddr. */ | |
2033 | ||
2034 | static bfd_vma | |
2035 | dtpoff_base (info) | |
2036 | struct bfd_link_info *info; | |
2037 | { | |
6a30718d JJ |
2038 | /* If tls_segment is NULL, we should have signalled an error already. */ |
2039 | if (elf_hash_table (info)->tls_segment == NULL) | |
2040 | return 0; | |
13ae64f3 JJ |
2041 | return elf_hash_table (info)->tls_segment->start; |
2042 | } | |
2043 | ||
2044 | /* Return the relocation value for @tpoff relocation | |
2045 | if STT_TLS virtual address is ADDRESS. */ | |
2046 | ||
2047 | static bfd_vma | |
2048 | tpoff (info, address) | |
2049 | struct bfd_link_info *info; | |
2050 | bfd_vma address; | |
2051 | { | |
2052 | struct elf_link_tls_segment *tls_segment | |
2053 | = elf_hash_table (info)->tls_segment; | |
2054 | ||
6a30718d JJ |
2055 | /* If tls_segment is NULL, we should have signalled an error already. */ |
2056 | if (tls_segment == NULL) | |
2057 | return 0; | |
13ae64f3 JJ |
2058 | return (align_power (tls_segment->size, tls_segment->align) |
2059 | + tls_segment->start - address); | |
2060 | } | |
2061 | ||
252b5132 RH |
2062 | /* Relocate an i386 ELF section. */ |
2063 | ||
b34976b6 | 2064 | static bfd_boolean |
252b5132 RH |
2065 | elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, |
2066 | contents, relocs, local_syms, local_sections) | |
2067 | bfd *output_bfd; | |
2068 | struct bfd_link_info *info; | |
2069 | bfd *input_bfd; | |
2070 | asection *input_section; | |
2071 | bfd_byte *contents; | |
2072 | Elf_Internal_Rela *relocs; | |
2073 | Elf_Internal_Sym *local_syms; | |
2074 | asection **local_sections; | |
2075 | { | |
6725bdbf | 2076 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2077 | Elf_Internal_Shdr *symtab_hdr; |
2078 | struct elf_link_hash_entry **sym_hashes; | |
2079 | bfd_vma *local_got_offsets; | |
252b5132 RH |
2080 | Elf_Internal_Rela *rel; |
2081 | Elf_Internal_Rela *relend; | |
2082 | ||
6725bdbf | 2083 | htab = elf_i386_hash_table (info); |
252b5132 RH |
2084 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
2085 | sym_hashes = elf_sym_hashes (input_bfd); | |
2086 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2087 | ||
252b5132 RH |
2088 | rel = relocs; |
2089 | relend = relocs + input_section->reloc_count; | |
2090 | for (; rel < relend; rel++) | |
2091 | { | |
13ae64f3 | 2092 | unsigned int r_type; |
252b5132 RH |
2093 | reloc_howto_type *howto; |
2094 | unsigned long r_symndx; | |
2095 | struct elf_link_hash_entry *h; | |
2096 | Elf_Internal_Sym *sym; | |
2097 | asection *sec; | |
ffb2e45b | 2098 | bfd_vma off; |
252b5132 | 2099 | bfd_vma relocation; |
b34976b6 | 2100 | bfd_boolean unresolved_reloc; |
252b5132 | 2101 | bfd_reloc_status_type r; |
1b452ec6 | 2102 | unsigned int indx; |
13ae64f3 | 2103 | int tls_type; |
252b5132 RH |
2104 | |
2105 | r_type = ELF32_R_TYPE (rel->r_info); | |
dc47f327 AM |
2106 | if (r_type == (int) R_386_GNU_VTINHERIT |
2107 | || r_type == (int) R_386_GNU_VTENTRY) | |
252b5132 | 2108 | continue; |
dc47f327 | 2109 | |
1b452ec6 | 2110 | if ((indx = (unsigned) r_type) >= R_386_standard |
13ae64f3 JJ |
2111 | && ((indx = r_type - R_386_ext_offset) - R_386_standard |
2112 | >= R_386_ext - R_386_standard) | |
2113 | && ((indx = r_type - R_386_tls_offset) - R_386_ext | |
2114 | >= R_386_tls - R_386_ext)) | |
252b5132 RH |
2115 | { |
2116 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2117 | return FALSE; |
252b5132 | 2118 | } |
1b452ec6 | 2119 | howto = elf_howto_table + indx; |
252b5132 RH |
2120 | |
2121 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2122 | ||
2123 | if (info->relocateable) | |
2124 | { | |
4a335f3d | 2125 | bfd_vma val; |
4a335f3d AM |
2126 | bfd_byte *where; |
2127 | ||
0ac8d2ca | 2128 | /* This is a relocatable link. We don't have to change |
252b5132 RH |
2129 | anything, unless the reloc is against a section symbol, |
2130 | in which case we have to adjust according to where the | |
2131 | section symbol winds up in the output section. */ | |
4a335f3d AM |
2132 | if (r_symndx >= symtab_hdr->sh_info) |
2133 | continue; | |
2134 | ||
2135 | sym = local_syms + r_symndx; | |
2136 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
2137 | continue; | |
2138 | ||
2139 | sec = local_sections[r_symndx]; | |
2140 | val = sec->output_offset; | |
2141 | if (val == 0) | |
2142 | continue; | |
2143 | ||
2144 | where = contents + rel->r_offset; | |
2145 | switch (howto->size) | |
252b5132 | 2146 | { |
16a10388 | 2147 | /* FIXME: overflow checks. */ |
4a335f3d | 2148 | case 0: |
16a10388 | 2149 | val += bfd_get_8 (input_bfd, where); |
4a335f3d | 2150 | bfd_put_8 (input_bfd, val, where); |
4a335f3d AM |
2151 | break; |
2152 | case 1: | |
16a10388 | 2153 | val += bfd_get_16 (input_bfd, where); |
4a335f3d | 2154 | bfd_put_16 (input_bfd, val, where); |
4a335f3d AM |
2155 | break; |
2156 | case 2: | |
2157 | val += bfd_get_32 (input_bfd, where); | |
2158 | bfd_put_32 (input_bfd, val, where); | |
2159 | break; | |
2160 | default: | |
2161 | abort (); | |
252b5132 | 2162 | } |
252b5132 RH |
2163 | continue; |
2164 | } | |
2165 | ||
2166 | /* This is a final link. */ | |
2167 | h = NULL; | |
2168 | sym = NULL; | |
2169 | sec = NULL; | |
b34976b6 | 2170 | unresolved_reloc = FALSE; |
252b5132 RH |
2171 | if (r_symndx < symtab_hdr->sh_info) |
2172 | { | |
2173 | sym = local_syms + r_symndx; | |
2174 | sec = local_sections[r_symndx]; | |
2175 | relocation = (sec->output_section->vma | |
2176 | + sec->output_offset | |
2177 | + sym->st_value); | |
f8df10f4 JJ |
2178 | if ((sec->flags & SEC_MERGE) |
2179 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
2180 | { | |
2181 | asection *msec; | |
2182 | bfd_vma addend; | |
4a335f3d | 2183 | bfd_byte *where = contents + rel->r_offset; |
f8df10f4 | 2184 | |
4a335f3d | 2185 | switch (howto->size) |
f8df10f4 | 2186 | { |
4a335f3d AM |
2187 | case 0: |
2188 | addend = bfd_get_8 (input_bfd, where); | |
2189 | if (howto->pc_relative) | |
2190 | { | |
2191 | addend = (addend ^ 0x80) - 0x80; | |
2192 | addend += 1; | |
2193 | } | |
2194 | break; | |
2195 | case 1: | |
2196 | addend = bfd_get_16 (input_bfd, where); | |
2197 | if (howto->pc_relative) | |
2198 | { | |
2199 | addend = (addend ^ 0x8000) - 0x8000; | |
2200 | addend += 2; | |
2201 | } | |
2202 | break; | |
2203 | case 2: | |
2204 | addend = bfd_get_32 (input_bfd, where); | |
2205 | if (howto->pc_relative) | |
2206 | { | |
2207 | addend = (addend ^ 0x80000000) - 0x80000000; | |
2208 | addend += 4; | |
2209 | } | |
2210 | break; | |
2211 | default: | |
2212 | abort (); | |
f8df10f4 JJ |
2213 | } |
2214 | ||
f8df10f4 | 2215 | msec = sec; |
4a335f3d AM |
2216 | addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); |
2217 | addend -= relocation; | |
f8df10f4 | 2218 | addend += msec->output_section->vma + msec->output_offset; |
4a335f3d AM |
2219 | |
2220 | switch (howto->size) | |
2221 | { | |
2222 | case 0: | |
16a10388 | 2223 | /* FIXME: overflow checks. */ |
4a335f3d AM |
2224 | if (howto->pc_relative) |
2225 | addend -= 1; | |
2226 | bfd_put_8 (input_bfd, addend, where); | |
4a335f3d AM |
2227 | break; |
2228 | case 1: | |
2229 | if (howto->pc_relative) | |
2230 | addend -= 2; | |
2231 | bfd_put_16 (input_bfd, addend, where); | |
4a335f3d AM |
2232 | break; |
2233 | case 2: | |
2234 | if (howto->pc_relative) | |
2235 | addend -= 4; | |
2236 | bfd_put_32 (input_bfd, addend, where); | |
2237 | break; | |
2238 | } | |
f8df10f4 | 2239 | } |
252b5132 RH |
2240 | } |
2241 | else | |
2242 | { | |
2243 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2244 | while (h->root.type == bfd_link_hash_indirect | |
2245 | || h->root.type == bfd_link_hash_warning) | |
2246 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
ffb2e45b | 2247 | |
6725bdbf | 2248 | relocation = 0; |
252b5132 RH |
2249 | if (h->root.type == bfd_link_hash_defined |
2250 | || h->root.type == bfd_link_hash_defweak) | |
2251 | { | |
2252 | sec = h->root.u.def.section; | |
83be169b AM |
2253 | if (sec->output_section == NULL) |
2254 | /* Set a flag that will be cleared later if we find a | |
2255 | relocation value for this symbol. output_section | |
2256 | is typically NULL for symbols satisfied by a shared | |
2257 | library. */ | |
b34976b6 | 2258 | unresolved_reloc = TRUE; |
252b5132 RH |
2259 | else |
2260 | relocation = (h->root.u.def.value | |
2261 | + sec->output_section->vma | |
2262 | + sec->output_offset); | |
2263 | } | |
2264 | else if (h->root.type == bfd_link_hash_undefweak) | |
6725bdbf | 2265 | ; |
671bae9c | 2266 | else if (info->shared |
3a27a730 L |
2267 | && !info->no_undefined |
2268 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
6725bdbf | 2269 | ; |
252b5132 RH |
2270 | else |
2271 | { | |
2272 | if (! ((*info->callbacks->undefined_symbol) | |
2273 | (info, h->root.root.string, input_bfd, | |
5cc7c785 | 2274 | input_section, rel->r_offset, |
3a27a730 L |
2275 | (!info->shared || info->no_undefined |
2276 | || ELF_ST_VISIBILITY (h->other))))) | |
b34976b6 | 2277 | return FALSE; |
252b5132 RH |
2278 | } |
2279 | } | |
2280 | ||
2281 | switch (r_type) | |
2282 | { | |
2283 | case R_386_GOT32: | |
2284 | /* Relocation is to the entry for this symbol in the global | |
2285 | offset table. */ | |
ffb2e45b AM |
2286 | if (htab->sgot == NULL) |
2287 | abort (); | |
252b5132 RH |
2288 | |
2289 | if (h != NULL) | |
2290 | { | |
b34976b6 | 2291 | bfd_boolean dyn; |
252b5132 RH |
2292 | |
2293 | off = h->got.offset; | |
ebe50bae | 2294 | dyn = htab->elf.dynamic_sections_created; |
26e41594 | 2295 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
252b5132 | 2296 | || (info->shared |
6725bdbf AM |
2297 | && (info->symbolic |
2298 | || h->dynindx == -1 | |
2299 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
252b5132 RH |
2300 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) |
2301 | { | |
2302 | /* This is actually a static link, or it is a | |
2303 | -Bsymbolic link and the symbol is defined | |
2304 | locally, or the symbol was forced to be local | |
2305 | because of a version file. We must initialize | |
2306 | this entry in the global offset table. Since the | |
2307 | offset must always be a multiple of 4, we use the | |
2308 | least significant bit to record whether we have | |
2309 | initialized it already. | |
2310 | ||
2311 | When doing a dynamic link, we create a .rel.got | |
2312 | relocation entry to initialize the value. This | |
2313 | is done in the finish_dynamic_symbol routine. */ | |
2314 | if ((off & 1) != 0) | |
2315 | off &= ~1; | |
2316 | else | |
2317 | { | |
2318 | bfd_put_32 (output_bfd, relocation, | |
6725bdbf | 2319 | htab->sgot->contents + off); |
252b5132 RH |
2320 | h->got.offset |= 1; |
2321 | } | |
2322 | } | |
8c694914 | 2323 | else |
b34976b6 | 2324 | unresolved_reloc = FALSE; |
252b5132 RH |
2325 | } |
2326 | else | |
2327 | { | |
ffb2e45b AM |
2328 | if (local_got_offsets == NULL) |
2329 | abort (); | |
252b5132 RH |
2330 | |
2331 | off = local_got_offsets[r_symndx]; | |
2332 | ||
2333 | /* The offset must always be a multiple of 4. We use | |
83be169b AM |
2334 | the least significant bit to record whether we have |
2335 | already generated the necessary reloc. */ | |
252b5132 RH |
2336 | if ((off & 1) != 0) |
2337 | off &= ~1; | |
2338 | else | |
2339 | { | |
6725bdbf AM |
2340 | bfd_put_32 (output_bfd, relocation, |
2341 | htab->sgot->contents + off); | |
252b5132 RH |
2342 | |
2343 | if (info->shared) | |
2344 | { | |
947216bf AM |
2345 | asection *s; |
2346 | Elf_Internal_Rela outrel; | |
2347 | bfd_byte *loc; | |
252b5132 | 2348 | |
947216bf AM |
2349 | s = htab->srelgot; |
2350 | if (s == NULL) | |
ffb2e45b | 2351 | abort (); |
252b5132 | 2352 | |
6725bdbf AM |
2353 | outrel.r_offset = (htab->sgot->output_section->vma |
2354 | + htab->sgot->output_offset | |
252b5132 RH |
2355 | + off); |
2356 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
947216bf AM |
2357 | loc = s->contents; |
2358 | loc += s->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 2359 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2360 | } |
2361 | ||
2362 | local_got_offsets[r_symndx] |= 1; | |
2363 | } | |
252b5132 RH |
2364 | } |
2365 | ||
ffb2e45b AM |
2366 | if (off >= (bfd_vma) -2) |
2367 | abort (); | |
2368 | ||
2369 | relocation = htab->sgot->output_offset + off; | |
252b5132 RH |
2370 | break; |
2371 | ||
2372 | case R_386_GOTOFF: | |
2373 | /* Relocation is relative to the start of the global offset | |
2374 | table. */ | |
2375 | ||
252b5132 RH |
2376 | /* Note that sgot->output_offset is not involved in this |
2377 | calculation. We always want the start of .got. If we | |
2378 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2379 | permitted by the ABI, we might have to change this | |
2380 | calculation. */ | |
6725bdbf | 2381 | relocation -= htab->sgot->output_section->vma; |
252b5132 RH |
2382 | break; |
2383 | ||
2384 | case R_386_GOTPC: | |
2385 | /* Use global offset table as symbol value. */ | |
6725bdbf | 2386 | relocation = htab->sgot->output_section->vma; |
b34976b6 | 2387 | unresolved_reloc = FALSE; |
252b5132 RH |
2388 | break; |
2389 | ||
2390 | case R_386_PLT32: | |
2391 | /* Relocation is to the entry for this symbol in the | |
2392 | procedure linkage table. */ | |
2393 | ||
dd5724d5 | 2394 | /* Resolve a PLT32 reloc against a local symbol directly, |
83be169b | 2395 | without using the procedure linkage table. */ |
252b5132 RH |
2396 | if (h == NULL) |
2397 | break; | |
2398 | ||
dd5724d5 | 2399 | if (h->plt.offset == (bfd_vma) -1 |
6725bdbf | 2400 | || htab->splt == NULL) |
252b5132 RH |
2401 | { |
2402 | /* We didn't make a PLT entry for this symbol. This | |
83be169b AM |
2403 | happens when statically linking PIC code, or when |
2404 | using -Bsymbolic. */ | |
252b5132 RH |
2405 | break; |
2406 | } | |
2407 | ||
6725bdbf AM |
2408 | relocation = (htab->splt->output_section->vma |
2409 | + htab->splt->output_offset | |
252b5132 | 2410 | + h->plt.offset); |
b34976b6 | 2411 | unresolved_reloc = FALSE; |
252b5132 RH |
2412 | break; |
2413 | ||
2414 | case R_386_32: | |
2415 | case R_386_PC32: | |
ec338859 AM |
2416 | /* r_symndx will be zero only for relocs against symbols |
2417 | from removed linkonce sections, or sections discarded by | |
2418 | a linker script. */ | |
2419 | if (r_symndx == 0 | |
2420 | || (input_section->flags & SEC_ALLOC) == 0) | |
2421 | break; | |
2422 | ||
12d0ee4a | 2423 | if ((info->shared |
12d0ee4a AM |
2424 | && (r_type != R_386_PC32 |
2425 | || (h != NULL | |
2426 | && h->dynindx != -1 | |
2427 | && (! info->symbolic | |
2428 | || (h->elf_link_hash_flags | |
2429 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
a23b6845 AM |
2430 | || (ELIMINATE_COPY_RELOCS |
2431 | && !info->shared | |
12d0ee4a AM |
2432 | && h != NULL |
2433 | && h->dynindx != -1 | |
2434 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
56882138 AM |
2435 | && (((h->elf_link_hash_flags |
2436 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
2437 | && (h->elf_link_hash_flags | |
2438 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
28d0b90e AM |
2439 | || h->root.type == bfd_link_hash_undefweak |
2440 | || h->root.type == bfd_link_hash_undefined))) | |
252b5132 | 2441 | { |
947216bf AM |
2442 | Elf_Internal_Rela outrel; |
2443 | bfd_byte *loc; | |
b34976b6 | 2444 | bfd_boolean skip, relocate; |
0c715baa | 2445 | asection *sreloc; |
252b5132 RH |
2446 | |
2447 | /* When generating a shared object, these relocations | |
2448 | are copied into the output file to be resolved at run | |
2449 | time. */ | |
2450 | ||
b34976b6 AM |
2451 | skip = FALSE; |
2452 | relocate = FALSE; | |
252b5132 | 2453 | |
c629eae0 JJ |
2454 | outrel.r_offset = |
2455 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2456 | rel->r_offset); | |
2457 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2458 | skip = TRUE; |
0bb2d96a | 2459 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2460 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
2461 | outrel.r_offset += (input_section->output_section->vma |
2462 | + input_section->output_offset); | |
2463 | ||
2464 | if (skip) | |
0bb2d96a | 2465 | memset (&outrel, 0, sizeof outrel); |
5a15f56f AM |
2466 | else if (h != NULL |
2467 | && h->dynindx != -1 | |
2468 | && (r_type == R_386_PC32 | |
2469 | || !info->shared | |
2470 | || !info->symbolic | |
2471 | || (h->elf_link_hash_flags | |
2472 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
0bb2d96a | 2473 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
2474 | else |
2475 | { | |
5a15f56f | 2476 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 2477 | relocate = TRUE; |
5a15f56f | 2478 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
252b5132 RH |
2479 | } |
2480 | ||
0c715baa AM |
2481 | sreloc = elf_section_data (input_section)->sreloc; |
2482 | if (sreloc == NULL) | |
2483 | abort (); | |
2484 | ||
947216bf AM |
2485 | loc = sreloc->contents; |
2486 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
0c715baa | 2487 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2488 | |
2489 | /* If this reloc is against an external symbol, we do | |
2490 | not want to fiddle with the addend. Otherwise, we | |
2491 | need to include the symbol value so that it becomes | |
2492 | an addend for the dynamic reloc. */ | |
2493 | if (! relocate) | |
2494 | continue; | |
2495 | } | |
252b5132 RH |
2496 | break; |
2497 | ||
37e55690 JJ |
2498 | case R_386_TLS_IE: |
2499 | if (info->shared) | |
2500 | { | |
947216bf AM |
2501 | Elf_Internal_Rela outrel; |
2502 | bfd_byte *loc; | |
37e55690 | 2503 | asection *sreloc; |
37e55690 JJ |
2504 | |
2505 | outrel.r_offset = rel->r_offset | |
2506 | + input_section->output_section->vma | |
2507 | + input_section->output_offset; | |
2508 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
2509 | sreloc = elf_section_data (input_section)->sreloc; | |
2510 | if (sreloc == NULL) | |
2511 | abort (); | |
947216bf AM |
2512 | loc = sreloc->contents; |
2513 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
2514 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2515 | } | |
2516 | /* Fall through */ | |
2517 | ||
13ae64f3 JJ |
2518 | case R_386_TLS_GD: |
2519 | case R_386_TLS_IE_32: | |
37e55690 | 2520 | case R_386_TLS_GOTIE: |
13ae64f3 JJ |
2521 | r_type = elf_i386_tls_transition (info, r_type, h == NULL); |
2522 | tls_type = GOT_UNKNOWN; | |
2523 | if (h == NULL && local_got_offsets) | |
2524 | tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx]; | |
2525 | else if (h != NULL) | |
2526 | { | |
2527 | tls_type = elf_i386_hash_entry(h)->tls_type; | |
37e55690 | 2528 | if (!info->shared && h->dynindx == -1 && (tls_type & GOT_TLS_IE)) |
13ae64f3 JJ |
2529 | r_type = R_386_TLS_LE_32; |
2530 | } | |
37e55690 JJ |
2531 | if (tls_type == GOT_TLS_IE) |
2532 | tls_type = GOT_TLS_IE_NEG; | |
2533 | if (r_type == R_386_TLS_GD) | |
2534 | { | |
2535 | if (tls_type == GOT_TLS_IE_POS) | |
2536 | r_type = R_386_TLS_GOTIE; | |
2537 | else if (tls_type & GOT_TLS_IE) | |
2538 | r_type = R_386_TLS_IE_32; | |
2539 | } | |
13ae64f3 JJ |
2540 | |
2541 | if (r_type == R_386_TLS_LE_32) | |
2542 | { | |
82e51918 | 2543 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
2544 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
2545 | { | |
2546 | unsigned int val, type; | |
2547 | bfd_vma roff; | |
2548 | ||
2549 | /* GD->LE transition. */ | |
2550 | BFD_ASSERT (rel->r_offset >= 2); | |
2551 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2552 | BFD_ASSERT (type == 0x8d || type == 0x04); | |
2553 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2554 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2555 | contents + rel->r_offset + 4) | |
2556 | == 0xe8); | |
2557 | BFD_ASSERT (rel + 1 < relend); | |
2558 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2559 | roff = rel->r_offset + 5; | |
2560 | val = bfd_get_8 (input_bfd, | |
2561 | contents + rel->r_offset - 1); | |
2562 | if (type == 0x04) | |
2563 | { | |
2564 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
2565 | Change it into: | |
2566 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2567 | (6 byte form of subl). */ | |
2568 | BFD_ASSERT (rel->r_offset >= 3); | |
2569 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2570 | contents + rel->r_offset - 3) | |
2571 | == 0x8d); | |
2572 | BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3)); | |
2573 | memcpy (contents + rel->r_offset - 3, | |
2574 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
2575 | } | |
2576 | else | |
2577 | { | |
2578 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2579 | if (rel->r_offset + 10 <= input_section->_raw_size | |
2580 | && bfd_get_8 (input_bfd, | |
2581 | contents + rel->r_offset + 9) == 0x90) | |
2582 | { | |
2583 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
2584 | Change it into: | |
2585 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2586 | (6 byte form of subl). */ | |
2587 | memcpy (contents + rel->r_offset - 2, | |
2588 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
2589 | roff = rel->r_offset + 6; | |
2590 | } | |
2591 | else | |
2592 | { | |
2593 | /* leal foo(%reg), %eax; call ___tls_get_addr | |
2594 | Change it into: | |
2595 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2596 | (5 byte form of subl). */ | |
2597 | memcpy (contents + rel->r_offset - 2, | |
2598 | "\x65\xa1\0\0\0\0\x2d\0\0\0", 11); | |
2599 | } | |
2600 | } | |
2601 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
2602 | contents + roff); | |
2603 | /* Skip R_386_PLT32. */ | |
2604 | rel++; | |
2605 | continue; | |
2606 | } | |
37e55690 | 2607 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE) |
13ae64f3 JJ |
2608 | { |
2609 | unsigned int val, type; | |
2610 | ||
2611 | /* IE->LE transition: | |
37e55690 JJ |
2612 | Originally it can be one of: |
2613 | movl foo, %eax | |
2614 | movl foo, %reg | |
2615 | addl foo, %reg | |
2616 | We change it into: | |
2617 | movl $foo, %eax | |
2618 | movl $foo, %reg | |
2619 | addl $foo, %reg. */ | |
2620 | BFD_ASSERT (rel->r_offset >= 1); | |
2621 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2622 | BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size); | |
37e55690 JJ |
2623 | if (val == 0xa1) |
2624 | { | |
2625 | /* movl foo, %eax. */ | |
7c445aa3 | 2626 | bfd_put_8 (output_bfd, 0xb8, contents + rel->r_offset - 1); |
37e55690 | 2627 | } |
299bf759 | 2628 | else |
37e55690 | 2629 | { |
299bf759 L |
2630 | BFD_ASSERT (rel->r_offset >= 2); |
2631 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2632 | switch (type) | |
26e41594 | 2633 | { |
299bf759 L |
2634 | case 0x8b: |
2635 | /* movl */ | |
2636 | BFD_ASSERT ((val & 0xc7) == 0x05); | |
2637 | bfd_put_8 (output_bfd, 0xc7, | |
2638 | contents + rel->r_offset - 2); | |
2639 | bfd_put_8 (output_bfd, | |
2640 | 0xc0 | ((val >> 3) & 7), | |
2641 | contents + rel->r_offset - 1); | |
2642 | break; | |
2643 | case 0x03: | |
2644 | /* addl */ | |
2645 | BFD_ASSERT ((val & 0xc7) == 0x05); | |
2646 | bfd_put_8 (output_bfd, 0x81, | |
2647 | contents + rel->r_offset - 2); | |
2648 | bfd_put_8 (output_bfd, | |
2649 | 0xc0 | ((val >> 3) & 7), | |
2650 | contents + rel->r_offset - 1); | |
2651 | break; | |
2652 | default: | |
2653 | BFD_FAIL (); | |
2654 | break; | |
26e41594 | 2655 | } |
37e55690 | 2656 | } |
37e55690 JJ |
2657 | bfd_put_32 (output_bfd, -tpoff (info, relocation), |
2658 | contents + rel->r_offset); | |
2659 | continue; | |
2660 | } | |
2661 | else | |
2662 | { | |
2663 | unsigned int val, type; | |
2664 | ||
2665 | /* {IE_32,GOTIE}->LE transition: | |
2666 | Originally it can be one of: | |
13ae64f3 | 2667 | subl foo(%reg1), %reg2 |
13ae64f3 | 2668 | movl foo(%reg1), %reg2 |
37e55690 | 2669 | addl foo(%reg1), %reg2 |
13ae64f3 JJ |
2670 | We change it into: |
2671 | subl $foo, %reg2 | |
37e55690 JJ |
2672 | movl $foo, %reg2 (6 byte form) |
2673 | addl $foo, %reg2. */ | |
13ae64f3 JJ |
2674 | BFD_ASSERT (rel->r_offset >= 2); |
2675 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2676 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2677 | BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size); | |
37e55690 | 2678 | BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4); |
13ae64f3 JJ |
2679 | if (type == 0x8b) |
2680 | { | |
2681 | /* movl */ | |
13ae64f3 JJ |
2682 | bfd_put_8 (output_bfd, 0xc7, |
2683 | contents + rel->r_offset - 2); | |
2684 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
2685 | contents + rel->r_offset - 1); | |
2686 | } | |
2687 | else if (type == 0x2b) | |
2688 | { | |
2689 | /* subl */ | |
13ae64f3 JJ |
2690 | bfd_put_8 (output_bfd, 0x81, |
2691 | contents + rel->r_offset - 2); | |
2692 | bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), | |
2693 | contents + rel->r_offset - 1); | |
2694 | } | |
37e55690 JJ |
2695 | else if (type == 0x03) |
2696 | { | |
2697 | /* addl */ | |
2698 | bfd_put_8 (output_bfd, 0x81, | |
2699 | contents + rel->r_offset - 2); | |
2700 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
2701 | contents + rel->r_offset - 1); | |
2702 | } | |
13ae64f3 JJ |
2703 | else |
2704 | BFD_FAIL (); | |
37e55690 JJ |
2705 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE) |
2706 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
2707 | contents + rel->r_offset); | |
2708 | else | |
2709 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
2710 | contents + rel->r_offset); | |
13ae64f3 JJ |
2711 | continue; |
2712 | } | |
2713 | } | |
2714 | ||
2715 | if (htab->sgot == NULL) | |
2716 | abort (); | |
2717 | ||
2718 | if (h != NULL) | |
2719 | off = h->got.offset; | |
2720 | else | |
2721 | { | |
2722 | if (local_got_offsets == NULL) | |
2723 | abort (); | |
2724 | ||
2725 | off = local_got_offsets[r_symndx]; | |
2726 | } | |
2727 | ||
2728 | if ((off & 1) != 0) | |
2729 | off &= ~1; | |
26e41594 | 2730 | else |
13ae64f3 | 2731 | { |
947216bf AM |
2732 | Elf_Internal_Rela outrel; |
2733 | bfd_byte *loc; | |
13ae64f3 JJ |
2734 | int dr_type, indx; |
2735 | ||
2736 | if (htab->srelgot == NULL) | |
2737 | abort (); | |
2738 | ||
2739 | outrel.r_offset = (htab->sgot->output_section->vma | |
2740 | + htab->sgot->output_offset + off); | |
2741 | ||
13ae64f3 JJ |
2742 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
2743 | if (r_type == R_386_TLS_GD) | |
2744 | dr_type = R_386_TLS_DTPMOD32; | |
37e55690 JJ |
2745 | else if (tls_type == GOT_TLS_IE_POS) |
2746 | dr_type = R_386_TLS_TPOFF; | |
13ae64f3 JJ |
2747 | else |
2748 | dr_type = R_386_TLS_TPOFF32; | |
37e55690 JJ |
2749 | if (dr_type == R_386_TLS_TPOFF && indx == 0) |
2750 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
2751 | htab->sgot->contents + off); | |
2752 | else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) | |
c5c1f40c | 2753 | bfd_put_32 (output_bfd, dtpoff_base (info) - relocation, |
c366c25e JJ |
2754 | htab->sgot->contents + off); |
2755 | else | |
2756 | bfd_put_32 (output_bfd, 0, | |
2757 | htab->sgot->contents + off); | |
13ae64f3 | 2758 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
947216bf AM |
2759 | loc = htab->srelgot->contents; |
2760 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2761 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2762 | ||
2763 | if (r_type == R_386_TLS_GD) | |
2764 | { | |
2765 | if (indx == 0) | |
2766 | { | |
82e51918 | 2767 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
2768 | bfd_put_32 (output_bfd, |
2769 | relocation - dtpoff_base (info), | |
2770 | htab->sgot->contents + off + 4); | |
2771 | } | |
2772 | else | |
2773 | { | |
2774 | bfd_put_32 (output_bfd, 0, | |
2775 | htab->sgot->contents + off + 4); | |
2776 | outrel.r_info = ELF32_R_INFO (indx, | |
2777 | R_386_TLS_DTPOFF32); | |
2778 | outrel.r_offset += 4; | |
2779 | htab->srelgot->reloc_count++; | |
947216bf AM |
2780 | loc += sizeof (Elf32_External_Rel); |
2781 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
13ae64f3 JJ |
2782 | } |
2783 | } | |
37e55690 JJ |
2784 | else if (tls_type == GOT_TLS_IE_BOTH) |
2785 | { | |
2786 | bfd_put_32 (output_bfd, | |
2787 | indx == 0 ? relocation - dtpoff_base (info) : 0, | |
2788 | htab->sgot->contents + off + 4); | |
2789 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
2790 | outrel.r_offset += 4; | |
2791 | htab->srelgot->reloc_count++; | |
947216bf | 2792 | loc += sizeof (Elf32_External_Rel); |
37e55690 JJ |
2793 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2794 | } | |
13ae64f3 JJ |
2795 | |
2796 | if (h != NULL) | |
2797 | h->got.offset |= 1; | |
2798 | else | |
2799 | local_got_offsets[r_symndx] |= 1; | |
2800 | } | |
2801 | ||
2802 | if (off >= (bfd_vma) -2) | |
2803 | abort (); | |
2804 | if (r_type == ELF32_R_TYPE (rel->r_info)) | |
2805 | { | |
2806 | relocation = htab->sgot->output_offset + off; | |
37e55690 JJ |
2807 | if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) |
2808 | && tls_type == GOT_TLS_IE_BOTH) | |
2809 | relocation += 4; | |
2810 | if (r_type == R_386_TLS_IE) | |
2811 | relocation += htab->sgot->output_section->vma; | |
b34976b6 | 2812 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
2813 | } |
2814 | else | |
2815 | { | |
2816 | unsigned int val, type; | |
2817 | bfd_vma roff; | |
2818 | ||
2819 | /* GD->IE transition. */ | |
2820 | BFD_ASSERT (rel->r_offset >= 2); | |
2821 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2822 | BFD_ASSERT (type == 0x8d || type == 0x04); | |
2823 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2824 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) | |
2825 | == 0xe8); | |
2826 | BFD_ASSERT (rel + 1 < relend); | |
2827 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2828 | roff = rel->r_offset - 3; | |
2829 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2830 | if (type == 0x04) | |
2831 | { | |
2832 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
2833 | Change it into: | |
2834 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
2835 | BFD_ASSERT (rel->r_offset >= 3); | |
2836 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2837 | contents + rel->r_offset - 3) | |
2838 | == 0x8d); | |
2839 | BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3)); | |
2840 | val >>= 3; | |
2841 | } | |
2842 | else | |
2843 | { | |
2844 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
2845 | Change it into: | |
2846 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
2847 | BFD_ASSERT (rel->r_offset + 10 <= input_section->_raw_size); | |
2848 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2849 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2850 | contents + rel->r_offset + 9) | |
2851 | == 0x90); | |
2852 | roff = rel->r_offset - 2; | |
2853 | } | |
2854 | memcpy (contents + roff, | |
2855 | "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); | |
2856 | contents[roff + 7] = 0x80 | (val & 7); | |
37e55690 JJ |
2857 | /* If foo is used only with foo@gotntpoff(%reg) and |
2858 | foo@indntpoff, but not with foo@gottpoff(%reg), change | |
2859 | subl $foo@gottpoff(%reg), %eax | |
2860 | into: | |
2861 | addl $foo@gotntpoff(%reg), %eax. */ | |
2862 | if (r_type == R_386_TLS_GOTIE) | |
2863 | { | |
2864 | contents[roff + 6] = 0x03; | |
2865 | if (tls_type == GOT_TLS_IE_BOTH) | |
2866 | off += 4; | |
2867 | } | |
13ae64f3 JJ |
2868 | bfd_put_32 (output_bfd, htab->sgot->output_offset + off, |
2869 | contents + roff + 8); | |
2870 | /* Skip R_386_PLT32. */ | |
2871 | rel++; | |
2872 | continue; | |
2873 | } | |
2874 | break; | |
2875 | ||
2876 | case R_386_TLS_LDM: | |
2877 | if (! info->shared) | |
2878 | { | |
2879 | unsigned int val; | |
2880 | ||
2881 | /* LD->LE transition: | |
2882 | Ensure it is: | |
2883 | leal foo(%reg), %eax; call ___tls_get_addr. | |
2884 | We change it into: | |
2885 | movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */ | |
2886 | BFD_ASSERT (rel->r_offset >= 2); | |
2887 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2) | |
2888 | == 0x8d); | |
2889 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2890 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2891 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2892 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) | |
2893 | == 0xe8); | |
2894 | BFD_ASSERT (rel + 1 < relend); | |
2895 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2896 | memcpy (contents + rel->r_offset - 2, | |
2897 | "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); | |
2898 | /* Skip R_386_PLT32. */ | |
2899 | rel++; | |
2900 | continue; | |
2901 | } | |
2902 | ||
2903 | if (htab->sgot == NULL) | |
2904 | abort (); | |
2905 | ||
2906 | off = htab->tls_ldm_got.offset; | |
2907 | if (off & 1) | |
2908 | off &= ~1; | |
2909 | else | |
2910 | { | |
947216bf AM |
2911 | Elf_Internal_Rela outrel; |
2912 | bfd_byte *loc; | |
13ae64f3 JJ |
2913 | |
2914 | if (htab->srelgot == NULL) | |
2915 | abort (); | |
2916 | ||
2917 | outrel.r_offset = (htab->sgot->output_section->vma | |
2918 | + htab->sgot->output_offset + off); | |
2919 | ||
2920 | bfd_put_32 (output_bfd, 0, | |
2921 | htab->sgot->contents + off); | |
2922 | bfd_put_32 (output_bfd, 0, | |
2923 | htab->sgot->contents + off + 4); | |
2924 | outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); | |
947216bf AM |
2925 | loc = htab->srelgot->contents; |
2926 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2927 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2928 | htab->tls_ldm_got.offset |= 1; | |
2929 | } | |
2930 | relocation = htab->sgot->output_offset + off; | |
b34976b6 | 2931 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
2932 | break; |
2933 | ||
2934 | case R_386_TLS_LDO_32: | |
a45bb67d | 2935 | if (info->shared || (input_section->flags & SEC_CODE) == 0) |
13ae64f3 JJ |
2936 | relocation -= dtpoff_base (info); |
2937 | else | |
2938 | /* When converting LDO to LE, we must negate. */ | |
2939 | relocation = -tpoff (info, relocation); | |
2940 | break; | |
2941 | ||
2942 | case R_386_TLS_LE_32: | |
13ae64f3 | 2943 | case R_386_TLS_LE: |
37e55690 JJ |
2944 | if (info->shared) |
2945 | { | |
947216bf | 2946 | Elf_Internal_Rela outrel; |
37e55690 | 2947 | asection *sreloc; |
947216bf | 2948 | bfd_byte *loc; |
37e55690 JJ |
2949 | int indx; |
2950 | ||
2951 | outrel.r_offset = rel->r_offset | |
2952 | + input_section->output_section->vma | |
2953 | + input_section->output_offset; | |
2954 | if (h != NULL && h->dynindx != -1) | |
2955 | indx = h->dynindx; | |
2956 | else | |
2957 | indx = 0; | |
2958 | if (r_type == R_386_TLS_LE_32) | |
2959 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); | |
2960 | else | |
2961 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
2962 | sreloc = elf_section_data (input_section)->sreloc; | |
2963 | if (sreloc == NULL) | |
2964 | abort (); | |
947216bf AM |
2965 | loc = sreloc->contents; |
2966 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
2967 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2968 | if (indx) | |
2969 | continue; | |
2970 | else if (r_type == R_386_TLS_LE_32) | |
2971 | relocation = dtpoff_base (info) - relocation; | |
2972 | else | |
2973 | relocation -= dtpoff_base (info); | |
2974 | } | |
2975 | else if (r_type == R_386_TLS_LE_32) | |
2976 | relocation = tpoff (info, relocation); | |
2977 | else | |
2978 | relocation = -tpoff (info, relocation); | |
13ae64f3 JJ |
2979 | break; |
2980 | ||
252b5132 RH |
2981 | default: |
2982 | break; | |
2983 | } | |
2984 | ||
239e1f3a AM |
2985 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
2986 | because such sections are not SEC_ALLOC and thus ld.so will | |
2987 | not process them. */ | |
8c694914 | 2988 | if (unresolved_reloc |
239e1f3a | 2989 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
8c694914 | 2990 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) |
6a30718d JJ |
2991 | { |
2992 | (*_bfd_error_handler) | |
2993 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), | |
2994 | bfd_archive_filename (input_bfd), | |
2995 | bfd_get_section_name (input_bfd, input_section), | |
2996 | (long) rel->r_offset, | |
2997 | h->root.root.string); | |
b34976b6 | 2998 | return FALSE; |
6a30718d | 2999 | } |
83be169b | 3000 | |
252b5132 RH |
3001 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3002 | contents, rel->r_offset, | |
3003 | relocation, (bfd_vma) 0); | |
3004 | ||
cf5c0c5b | 3005 | if (r != bfd_reloc_ok) |
252b5132 | 3006 | { |
cf5c0c5b | 3007 | const char *name; |
ffb2e45b | 3008 | |
cf5c0c5b AM |
3009 | if (h != NULL) |
3010 | name = h->root.root.string; | |
3011 | else | |
3012 | { | |
3013 | name = bfd_elf_string_from_elf_section (input_bfd, | |
3014 | symtab_hdr->sh_link, | |
3015 | sym->st_name); | |
3016 | if (name == NULL) | |
b34976b6 | 3017 | return FALSE; |
cf5c0c5b AM |
3018 | if (*name == '\0') |
3019 | name = bfd_section_name (input_bfd, sec); | |
3020 | } | |
ffb2e45b | 3021 | |
cf5c0c5b AM |
3022 | if (r == bfd_reloc_overflow) |
3023 | { | |
cf5c0c5b AM |
3024 | if (! ((*info->callbacks->reloc_overflow) |
3025 | (info, name, howto->name, (bfd_vma) 0, | |
3026 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 3027 | return FALSE; |
cf5c0c5b AM |
3028 | } |
3029 | else | |
3030 | { | |
3031 | (*_bfd_error_handler) | |
3032 | (_("%s(%s+0x%lx): reloc against `%s': error %d"), | |
3033 | bfd_archive_filename (input_bfd), | |
3034 | bfd_get_section_name (input_bfd, input_section), | |
3035 | (long) rel->r_offset, name, (int) r); | |
b34976b6 | 3036 | return FALSE; |
cf5c0c5b | 3037 | } |
252b5132 RH |
3038 | } |
3039 | } | |
3040 | ||
b34976b6 | 3041 | return TRUE; |
252b5132 RH |
3042 | } |
3043 | ||
3044 | /* Finish up dynamic symbol handling. We set the contents of various | |
3045 | dynamic sections here. */ | |
3046 | ||
b34976b6 | 3047 | static bfd_boolean |
252b5132 RH |
3048 | elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym) |
3049 | bfd *output_bfd; | |
3050 | struct bfd_link_info *info; | |
3051 | struct elf_link_hash_entry *h; | |
3052 | Elf_Internal_Sym *sym; | |
3053 | { | |
6725bdbf | 3054 | struct elf_i386_link_hash_table *htab; |
252b5132 | 3055 | |
6725bdbf | 3056 | htab = elf_i386_hash_table (info); |
252b5132 RH |
3057 | |
3058 | if (h->plt.offset != (bfd_vma) -1) | |
3059 | { | |
252b5132 RH |
3060 | bfd_vma plt_index; |
3061 | bfd_vma got_offset; | |
947216bf AM |
3062 | Elf_Internal_Rela rel; |
3063 | bfd_byte *loc; | |
252b5132 RH |
3064 | |
3065 | /* This symbol has an entry in the procedure linkage table. Set | |
3066 | it up. */ | |
3067 | ||
ffb2e45b AM |
3068 | if (h->dynindx == -1 |
3069 | || htab->splt == NULL | |
3070 | || htab->sgotplt == NULL | |
3071 | || htab->srelplt == NULL) | |
3072 | abort (); | |
252b5132 RH |
3073 | |
3074 | /* Get the index in the procedure linkage table which | |
3075 | corresponds to this symbol. This is the index of this symbol | |
3076 | in all the symbols for which we are making plt entries. The | |
3077 | first entry in the procedure linkage table is reserved. */ | |
3078 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3079 | ||
3080 | /* Get the offset into the .got table of the entry that | |
3081 | corresponds to this function. Each .got entry is 4 bytes. | |
3082 | The first three are reserved. */ | |
3083 | got_offset = (plt_index + 3) * 4; | |
3084 | ||
3085 | /* Fill in the entry in the procedure linkage table. */ | |
3086 | if (! info->shared) | |
3087 | { | |
6725bdbf | 3088 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry, |
252b5132 RH |
3089 | PLT_ENTRY_SIZE); |
3090 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
3091 | (htab->sgotplt->output_section->vma |
3092 | + htab->sgotplt->output_offset | |
252b5132 | 3093 | + got_offset), |
6725bdbf | 3094 | htab->splt->contents + h->plt.offset + 2); |
252b5132 RH |
3095 | } |
3096 | else | |
3097 | { | |
6725bdbf | 3098 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry, |
252b5132 RH |
3099 | PLT_ENTRY_SIZE); |
3100 | bfd_put_32 (output_bfd, got_offset, | |
6725bdbf | 3101 | htab->splt->contents + h->plt.offset + 2); |
252b5132 RH |
3102 | } |
3103 | ||
3104 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel), | |
6725bdbf | 3105 | htab->splt->contents + h->plt.offset + 7); |
252b5132 | 3106 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), |
6725bdbf | 3107 | htab->splt->contents + h->plt.offset + 12); |
252b5132 RH |
3108 | |
3109 | /* Fill in the entry in the global offset table. */ | |
3110 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
3111 | (htab->splt->output_section->vma |
3112 | + htab->splt->output_offset | |
252b5132 RH |
3113 | + h->plt.offset |
3114 | + 6), | |
6725bdbf | 3115 | htab->sgotplt->contents + got_offset); |
252b5132 RH |
3116 | |
3117 | /* Fill in the entry in the .rel.plt section. */ | |
6725bdbf AM |
3118 | rel.r_offset = (htab->sgotplt->output_section->vma |
3119 | + htab->sgotplt->output_offset | |
252b5132 RH |
3120 | + got_offset); |
3121 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); | |
947216bf | 3122 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel); |
0ac8d2ca | 3123 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3124 | |
3125 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
3126 | { | |
3127 | /* Mark the symbol as undefined, rather than as defined in | |
51b64d56 AM |
3128 | the .plt section. Leave the value alone. This is a clue |
3129 | for the dynamic linker, to make function pointer | |
3130 | comparisons work between an application and shared | |
cedb70c5 | 3131 | library. */ |
252b5132 RH |
3132 | sym->st_shndx = SHN_UNDEF; |
3133 | } | |
3134 | } | |
3135 | ||
13ae64f3 JJ |
3136 | if (h->got.offset != (bfd_vma) -1 |
3137 | && elf_i386_hash_entry(h)->tls_type != GOT_TLS_GD | |
37e55690 | 3138 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0) |
252b5132 | 3139 | { |
947216bf AM |
3140 | Elf_Internal_Rela rel; |
3141 | bfd_byte *loc; | |
252b5132 RH |
3142 | |
3143 | /* This symbol has an entry in the global offset table. Set it | |
3144 | up. */ | |
3145 | ||
ffb2e45b AM |
3146 | if (htab->sgot == NULL || htab->srelgot == NULL) |
3147 | abort (); | |
252b5132 | 3148 | |
6725bdbf AM |
3149 | rel.r_offset = (htab->sgot->output_section->vma |
3150 | + htab->sgot->output_offset | |
dc810e39 | 3151 | + (h->got.offset & ~(bfd_vma) 1)); |
252b5132 | 3152 | |
dd5724d5 AM |
3153 | /* If this is a static link, or it is a -Bsymbolic link and the |
3154 | symbol is defined locally or was forced to be local because | |
3155 | of a version file, we just want to emit a RELATIVE reloc. | |
252b5132 RH |
3156 | The entry in the global offset table will already have been |
3157 | initialized in the relocate_section function. */ | |
6725bdbf AM |
3158 | if (info->shared |
3159 | && (info->symbolic | |
3160 | || h->dynindx == -1 | |
3161 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
3162 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
dd5724d5 | 3163 | { |
6725bdbf | 3164 | BFD_ASSERT((h->got.offset & 1) != 0); |
dd5724d5 AM |
3165 | rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
3166 | } | |
252b5132 RH |
3167 | else |
3168 | { | |
dd5724d5 | 3169 | BFD_ASSERT((h->got.offset & 1) == 0); |
6725bdbf AM |
3170 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
3171 | htab->sgot->contents + h->got.offset); | |
252b5132 RH |
3172 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); |
3173 | } | |
3174 | ||
947216bf AM |
3175 | loc = htab->srelgot->contents; |
3176 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3177 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3178 | } |
3179 | ||
791987af | 3180 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
252b5132 | 3181 | { |
947216bf AM |
3182 | Elf_Internal_Rela rel; |
3183 | bfd_byte *loc; | |
252b5132 RH |
3184 | |
3185 | /* This symbol needs a copy reloc. Set it up. */ | |
3186 | ||
ffb2e45b AM |
3187 | if (h->dynindx == -1 |
3188 | || (h->root.type != bfd_link_hash_defined | |
3189 | && h->root.type != bfd_link_hash_defweak) | |
3190 | || htab->srelbss == NULL) | |
3191 | abort (); | |
252b5132 RH |
3192 | |
3193 | rel.r_offset = (h->root.u.def.value | |
3194 | + h->root.u.def.section->output_section->vma | |
3195 | + h->root.u.def.section->output_offset); | |
3196 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); | |
947216bf AM |
3197 | loc = htab->srelbss->contents; |
3198 | loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3199 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3200 | } |
3201 | ||
3202 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
3203 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
3204 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
3205 | sym->st_shndx = SHN_ABS; | |
3206 | ||
b34976b6 | 3207 | return TRUE; |
252b5132 RH |
3208 | } |
3209 | ||
38701953 AM |
3210 | /* Used to decide how to sort relocs in an optimal manner for the |
3211 | dynamic linker, before writing them out. */ | |
3212 | ||
3213 | static enum elf_reloc_type_class | |
3214 | elf_i386_reloc_type_class (rela) | |
3215 | const Elf_Internal_Rela *rela; | |
3216 | { | |
3217 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
3218 | { | |
3219 | case R_386_RELATIVE: | |
3220 | return reloc_class_relative; | |
3221 | case R_386_JUMP_SLOT: | |
3222 | return reloc_class_plt; | |
3223 | case R_386_COPY: | |
3224 | return reloc_class_copy; | |
3225 | default: | |
3226 | return reloc_class_normal; | |
3227 | } | |
3228 | } | |
3229 | ||
252b5132 RH |
3230 | /* Finish up the dynamic sections. */ |
3231 | ||
b34976b6 | 3232 | static bfd_boolean |
252b5132 RH |
3233 | elf_i386_finish_dynamic_sections (output_bfd, info) |
3234 | bfd *output_bfd; | |
3235 | struct bfd_link_info *info; | |
3236 | { | |
6725bdbf | 3237 | struct elf_i386_link_hash_table *htab; |
252b5132 | 3238 | bfd *dynobj; |
252b5132 RH |
3239 | asection *sdyn; |
3240 | ||
6725bdbf | 3241 | htab = elf_i386_hash_table (info); |
ebe50bae | 3242 | dynobj = htab->elf.dynobj; |
252b5132 RH |
3243 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
3244 | ||
ebe50bae | 3245 | if (htab->elf.dynamic_sections_created) |
252b5132 | 3246 | { |
252b5132 RH |
3247 | Elf32_External_Dyn *dyncon, *dynconend; |
3248 | ||
ffb2e45b AM |
3249 | if (sdyn == NULL || htab->sgot == NULL) |
3250 | abort (); | |
252b5132 RH |
3251 | |
3252 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
3253 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
3254 | for (; dyncon < dynconend; dyncon++) | |
3255 | { | |
3256 | Elf_Internal_Dyn dyn; | |
51b64d56 | 3257 | asection *s; |
252b5132 RH |
3258 | |
3259 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
3260 | ||
3261 | switch (dyn.d_tag) | |
3262 | { | |
3263 | default: | |
0ac8d2ca | 3264 | continue; |
252b5132 RH |
3265 | |
3266 | case DT_PLTGOT: | |
6725bdbf | 3267 | dyn.d_un.d_ptr = htab->sgot->output_section->vma; |
6725bdbf AM |
3268 | break; |
3269 | ||
252b5132 | 3270 | case DT_JMPREL: |
6348e046 AM |
3271 | s = htab->srelplt; |
3272 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
252b5132 RH |
3273 | break; |
3274 | ||
3275 | case DT_PLTRELSZ: | |
6348e046 AM |
3276 | s = htab->srelplt; |
3277 | dyn.d_un.d_val = s->_raw_size; | |
252b5132 RH |
3278 | break; |
3279 | ||
3280 | case DT_RELSZ: | |
3281 | /* My reading of the SVR4 ABI indicates that the | |
3282 | procedure linkage table relocs (DT_JMPREL) should be | |
3283 | included in the overall relocs (DT_REL). This is | |
3284 | what Solaris does. However, UnixWare can not handle | |
3285 | that case. Therefore, we override the DT_RELSZ entry | |
6348e046 AM |
3286 | here to make it not include the JMPREL relocs. */ |
3287 | s = htab->srelplt; | |
3288 | if (s == NULL) | |
3289 | continue; | |
3290 | dyn.d_un.d_val -= s->_raw_size; | |
3291 | break; | |
3292 | ||
3293 | case DT_REL: | |
3294 | /* We may not be using the standard ELF linker script. | |
3295 | If .rel.plt is the first .rel section, we adjust | |
3296 | DT_REL to not include it. */ | |
3297 | s = htab->srelplt; | |
3298 | if (s == NULL) | |
3299 | continue; | |
3300 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
3301 | continue; | |
3302 | dyn.d_un.d_ptr += s->_raw_size; | |
252b5132 RH |
3303 | break; |
3304 | } | |
0ac8d2ca AM |
3305 | |
3306 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
3307 | } |
3308 | ||
3309 | /* Fill in the first entry in the procedure linkage table. */ | |
6725bdbf | 3310 | if (htab->splt && htab->splt->_raw_size > 0) |
252b5132 RH |
3311 | { |
3312 | if (info->shared) | |
6725bdbf AM |
3313 | memcpy (htab->splt->contents, |
3314 | elf_i386_pic_plt0_entry, PLT_ENTRY_SIZE); | |
252b5132 RH |
3315 | else |
3316 | { | |
6725bdbf AM |
3317 | memcpy (htab->splt->contents, |
3318 | elf_i386_plt0_entry, PLT_ENTRY_SIZE); | |
252b5132 | 3319 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3320 | (htab->sgotplt->output_section->vma |
3321 | + htab->sgotplt->output_offset | |
3322 | + 4), | |
3323 | htab->splt->contents + 2); | |
252b5132 | 3324 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3325 | (htab->sgotplt->output_section->vma |
3326 | + htab->sgotplt->output_offset | |
3327 | + 8), | |
3328 | htab->splt->contents + 8); | |
252b5132 RH |
3329 | } |
3330 | ||
3331 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
3332 | really seem like the right value. */ | |
6725bdbf AM |
3333 | elf_section_data (htab->splt->output_section) |
3334 | ->this_hdr.sh_entsize = 4; | |
252b5132 RH |
3335 | } |
3336 | } | |
3337 | ||
12d0ee4a | 3338 | if (htab->sgotplt) |
252b5132 | 3339 | { |
12d0ee4a AM |
3340 | /* Fill in the first three entries in the global offset table. */ |
3341 | if (htab->sgotplt->_raw_size > 0) | |
3342 | { | |
3343 | bfd_put_32 (output_bfd, | |
3344 | (sdyn == NULL ? (bfd_vma) 0 | |
3345 | : sdyn->output_section->vma + sdyn->output_offset), | |
3346 | htab->sgotplt->contents); | |
3347 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4); | |
3348 | bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8); | |
3349 | } | |
252b5132 | 3350 | |
12d0ee4a AM |
3351 | elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4; |
3352 | } | |
b34976b6 | 3353 | return TRUE; |
252b5132 RH |
3354 | } |
3355 | ||
3356 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vec | |
3357 | #define TARGET_LITTLE_NAME "elf32-i386" | |
3358 | #define ELF_ARCH bfd_arch_i386 | |
3359 | #define ELF_MACHINE_CODE EM_386 | |
3360 | #define ELF_MAXPAGESIZE 0x1000 | |
252b5132 RH |
3361 | |
3362 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3363 | #define elf_backend_can_refcount 1 |
252b5132 RH |
3364 | #define elf_backend_want_got_plt 1 |
3365 | #define elf_backend_plt_readonly 1 | |
3366 | #define elf_backend_want_plt_sym 0 | |
3367 | #define elf_backend_got_header_size 12 | |
3368 | #define elf_backend_plt_header_size PLT_ENTRY_SIZE | |
3369 | ||
dd5724d5 AM |
3370 | #define elf_info_to_howto elf_i386_info_to_howto |
3371 | #define elf_info_to_howto_rel elf_i386_info_to_howto_rel | |
3372 | ||
13ae64f3 JJ |
3373 | #define bfd_elf32_mkobject elf_i386_mkobject |
3374 | #define elf_backend_object_p elf_i386_object_p | |
3375 | ||
dd5724d5 AM |
3376 | #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name |
3377 | #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create | |
3378 | #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup | |
3379 | ||
3380 | #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol | |
3381 | #define elf_backend_check_relocs elf_i386_check_relocs | |
0ac8d2ca | 3382 | #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol |
6725bdbf | 3383 | #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections |
0ac8d2ca | 3384 | #define elf_backend_fake_sections elf_i386_fake_sections |
dd5724d5 AM |
3385 | #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections |
3386 | #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol | |
3387 | #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook | |
3388 | #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook | |
c5fccbec DJ |
3389 | #define elf_backend_grok_prstatus elf_i386_grok_prstatus |
3390 | #define elf_backend_grok_psinfo elf_i386_grok_psinfo | |
db6751f2 | 3391 | #define elf_backend_reloc_type_class elf_i386_reloc_type_class |
0ac8d2ca AM |
3392 | #define elf_backend_relocate_section elf_i386_relocate_section |
3393 | #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections | |
dd5724d5 | 3394 | |
252b5132 | 3395 | #include "elf32-target.h" |
2bc3c89a AM |
3396 | |
3397 | /* FreeBSD support. */ | |
3398 | ||
3399 | #undef TARGET_LITTLE_SYM | |
3400 | #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec | |
3401 | #undef TARGET_LITTLE_NAME | |
3402 | #define TARGET_LITTLE_NAME "elf32-i386-freebsd" | |
3403 | ||
3404 | /* The kernel recognizes executables as valid only if they carry a | |
3405 | "FreeBSD" label in the ELF header. So we put this label on all | |
3406 | executables and (for simplicity) also all other object files. */ | |
3407 | ||
3408 | static void elf_i386_post_process_headers | |
3409 | PARAMS ((bfd *, struct bfd_link_info *)); | |
3410 | ||
3411 | static void | |
3412 | elf_i386_post_process_headers (abfd, link_info) | |
3413 | bfd *abfd; | |
3414 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED; | |
3415 | { | |
3416 | Elf_Internal_Ehdr *i_ehdrp; | |
3417 | ||
3418 | i_ehdrp = elf_elfheader (abfd); | |
3419 | ||
3420 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
3421 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; | |
3422 | #ifdef OLD_FREEBSD_ABI_LABEL | |
3423 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
3424 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
caf47ea6 | 3425 | #endif |
2bc3c89a AM |
3426 | } |
3427 | ||
3428 | #undef elf_backend_post_process_headers | |
571fe01f NC |
3429 | #define elf_backend_post_process_headers elf_i386_post_process_headers |
3430 | #undef elf32_bed | |
3431 | #define elf32_bed elf32_i386_fbsd_bed | |
2bc3c89a AM |
3432 | |
3433 | #include "elf32-target.h" |