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 | ||
55fd94b0 AM |
27 | /* 386 uses REL relocations instead of RELA. */ |
28 | #define USE_REL 1 | |
252b5132 RH |
29 | |
30 | #include "elf/i386.h" | |
31 | ||
32 | static reloc_howto_type elf_howto_table[]= | |
33 | { | |
b34976b6 | 34 | HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield, |
1b452ec6 | 35 | bfd_elf_generic_reloc, "R_386_NONE", |
b34976b6 AM |
36 | TRUE, 0x00000000, 0x00000000, FALSE), |
37 | HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 38 | bfd_elf_generic_reloc, "R_386_32", |
b34976b6 AM |
39 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
40 | HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 41 | bfd_elf_generic_reloc, "R_386_PC32", |
b34976b6 AM |
42 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
43 | HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 44 | bfd_elf_generic_reloc, "R_386_GOT32", |
b34976b6 AM |
45 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
46 | HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 47 | bfd_elf_generic_reloc, "R_386_PLT32", |
b34976b6 AM |
48 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
49 | HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 50 | bfd_elf_generic_reloc, "R_386_COPY", |
b34976b6 AM |
51 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
52 | HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 53 | bfd_elf_generic_reloc, "R_386_GLOB_DAT", |
b34976b6 AM |
54 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
55 | HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 56 | bfd_elf_generic_reloc, "R_386_JUMP_SLOT", |
b34976b6 AM |
57 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
58 | HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 59 | bfd_elf_generic_reloc, "R_386_RELATIVE", |
b34976b6 AM |
60 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
61 | HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 62 | bfd_elf_generic_reloc, "R_386_GOTOFF", |
b34976b6 AM |
63 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
64 | HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 65 | bfd_elf_generic_reloc, "R_386_GOTPC", |
b34976b6 | 66 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
1b452ec6 | 67 | |
dc47f327 AM |
68 | /* We have a gap in the reloc numbers here. |
69 | R_386_standard counts the number up to this point, and | |
70 | R_386_ext_offset is the value to subtract from a reloc type of | |
71 | R_386_16 thru R_386_PC8 to form an index into this table. */ | |
55fd94b0 AM |
72 | #define R_386_standard (R_386_GOTPC + 1) |
73 | #define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard) | |
1b452ec6 | 74 | |
37e55690 | 75 | /* These relocs are a GNU extension. */ |
b34976b6 | 76 | HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
37e55690 | 77 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF", |
b34976b6 AM |
78 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
79 | HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 80 | bfd_elf_generic_reloc, "R_386_TLS_IE", |
b34976b6 AM |
81 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
82 | HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 83 | bfd_elf_generic_reloc, "R_386_TLS_GOTIE", |
b34976b6 AM |
84 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
85 | HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 86 | bfd_elf_generic_reloc, "R_386_TLS_LE", |
b34976b6 AM |
87 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
88 | HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 89 | bfd_elf_generic_reloc, "R_386_TLS_GD", |
b34976b6 AM |
90 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
91 | HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 92 | bfd_elf_generic_reloc, "R_386_TLS_LDM", |
b34976b6 AM |
93 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
94 | HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 95 | bfd_elf_generic_reloc, "R_386_16", |
b34976b6 AM |
96 | TRUE, 0xffff, 0xffff, FALSE), |
97 | HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 98 | bfd_elf_generic_reloc, "R_386_PC16", |
b34976b6 AM |
99 | TRUE, 0xffff, 0xffff, TRUE), |
100 | HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 101 | bfd_elf_generic_reloc, "R_386_8", |
b34976b6 AM |
102 | TRUE, 0xff, 0xff, FALSE), |
103 | HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
1b452ec6 | 104 | bfd_elf_generic_reloc, "R_386_PC8", |
b34976b6 | 105 | TRUE, 0xff, 0xff, TRUE), |
dc47f327 | 106 | |
55fd94b0 AM |
107 | #define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset) |
108 | #define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext) | |
13ae64f3 | 109 | /* These are common with Solaris TLS implementation. */ |
b34976b6 | 110 | HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
13ae64f3 | 111 | bfd_elf_generic_reloc, "R_386_TLS_LDO_32", |
b34976b6 AM |
112 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
113 | HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 114 | bfd_elf_generic_reloc, "R_386_TLS_IE_32", |
b34976b6 AM |
115 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
116 | HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 117 | bfd_elf_generic_reloc, "R_386_TLS_LE_32", |
b34976b6 AM |
118 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
119 | HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 120 | bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32", |
b34976b6 AM |
121 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
122 | HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 123 | bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32", |
b34976b6 AM |
124 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
125 | HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 126 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF32", |
b34976b6 | 127 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
13ae64f3 JJ |
128 | |
129 | /* Another gap. */ | |
55fd94b0 AM |
130 | #define R_386_tls (R_386_TLS_TPOFF32 + 1 - R_386_tls_offset) |
131 | #define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_tls) | |
252b5132 RH |
132 | |
133 | /* GNU extension to record C++ vtable hierarchy. */ | |
252b5132 RH |
134 | HOWTO (R_386_GNU_VTINHERIT, /* type */ |
135 | 0, /* rightshift */ | |
136 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
137 | 0, /* bitsize */ | |
b34976b6 | 138 | FALSE, /* pc_relative */ |
252b5132 RH |
139 | 0, /* bitpos */ |
140 | complain_overflow_dont, /* complain_on_overflow */ | |
141 | NULL, /* special_function */ | |
142 | "R_386_GNU_VTINHERIT", /* name */ | |
b34976b6 | 143 | FALSE, /* partial_inplace */ |
252b5132 RH |
144 | 0, /* src_mask */ |
145 | 0, /* dst_mask */ | |
b34976b6 | 146 | FALSE), /* pcrel_offset */ |
252b5132 RH |
147 | |
148 | /* GNU extension to record C++ vtable member usage. */ | |
252b5132 RH |
149 | HOWTO (R_386_GNU_VTENTRY, /* type */ |
150 | 0, /* rightshift */ | |
151 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
152 | 0, /* bitsize */ | |
b34976b6 | 153 | FALSE, /* pc_relative */ |
252b5132 RH |
154 | 0, /* bitpos */ |
155 | complain_overflow_dont, /* complain_on_overflow */ | |
156 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
157 | "R_386_GNU_VTENTRY", /* name */ | |
b34976b6 | 158 | FALSE, /* partial_inplace */ |
252b5132 RH |
159 | 0, /* src_mask */ |
160 | 0, /* dst_mask */ | |
b34976b6 | 161 | FALSE) /* pcrel_offset */ |
dc47f327 | 162 | |
55fd94b0 | 163 | #define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset) |
dc47f327 AM |
164 | |
165 | }; | |
166 | ||
252b5132 | 167 | #ifdef DEBUG_GEN_RELOC |
55fd94b0 AM |
168 | #define TRACE(str) \ |
169 | fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str) | |
252b5132 RH |
170 | #else |
171 | #define TRACE(str) | |
172 | #endif | |
173 | ||
174 | static reloc_howto_type * | |
55fd94b0 AM |
175 | elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
176 | bfd_reloc_code_real_type code) | |
252b5132 RH |
177 | { |
178 | switch (code) | |
179 | { | |
180 | case BFD_RELOC_NONE: | |
181 | TRACE ("BFD_RELOC_NONE"); | |
55fd94b0 | 182 | return &elf_howto_table[R_386_NONE]; |
252b5132 RH |
183 | |
184 | case BFD_RELOC_32: | |
185 | TRACE ("BFD_RELOC_32"); | |
55fd94b0 | 186 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
187 | |
188 | case BFD_RELOC_CTOR: | |
189 | TRACE ("BFD_RELOC_CTOR"); | |
55fd94b0 | 190 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
191 | |
192 | case BFD_RELOC_32_PCREL: | |
193 | TRACE ("BFD_RELOC_PC32"); | |
55fd94b0 | 194 | return &elf_howto_table[R_386_PC32]; |
252b5132 RH |
195 | |
196 | case BFD_RELOC_386_GOT32: | |
197 | TRACE ("BFD_RELOC_386_GOT32"); | |
55fd94b0 | 198 | return &elf_howto_table[R_386_GOT32]; |
252b5132 RH |
199 | |
200 | case BFD_RELOC_386_PLT32: | |
201 | TRACE ("BFD_RELOC_386_PLT32"); | |
55fd94b0 | 202 | return &elf_howto_table[R_386_PLT32]; |
252b5132 RH |
203 | |
204 | case BFD_RELOC_386_COPY: | |
205 | TRACE ("BFD_RELOC_386_COPY"); | |
55fd94b0 | 206 | return &elf_howto_table[R_386_COPY]; |
252b5132 RH |
207 | |
208 | case BFD_RELOC_386_GLOB_DAT: | |
209 | TRACE ("BFD_RELOC_386_GLOB_DAT"); | |
55fd94b0 | 210 | return &elf_howto_table[R_386_GLOB_DAT]; |
252b5132 RH |
211 | |
212 | case BFD_RELOC_386_JUMP_SLOT: | |
213 | TRACE ("BFD_RELOC_386_JUMP_SLOT"); | |
55fd94b0 | 214 | return &elf_howto_table[R_386_JUMP_SLOT]; |
252b5132 RH |
215 | |
216 | case BFD_RELOC_386_RELATIVE: | |
217 | TRACE ("BFD_RELOC_386_RELATIVE"); | |
55fd94b0 | 218 | return &elf_howto_table[R_386_RELATIVE]; |
252b5132 RH |
219 | |
220 | case BFD_RELOC_386_GOTOFF: | |
221 | TRACE ("BFD_RELOC_386_GOTOFF"); | |
55fd94b0 | 222 | return &elf_howto_table[R_386_GOTOFF]; |
252b5132 RH |
223 | |
224 | case BFD_RELOC_386_GOTPC: | |
225 | TRACE ("BFD_RELOC_386_GOTPC"); | |
55fd94b0 | 226 | return &elf_howto_table[R_386_GOTPC]; |
252b5132 | 227 | |
37e55690 JJ |
228 | /* These relocs are a GNU extension. */ |
229 | case BFD_RELOC_386_TLS_TPOFF: | |
230 | TRACE ("BFD_RELOC_386_TLS_TPOFF"); | |
55fd94b0 | 231 | return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset]; |
37e55690 JJ |
232 | |
233 | case BFD_RELOC_386_TLS_IE: | |
234 | TRACE ("BFD_RELOC_386_TLS_IE"); | |
55fd94b0 | 235 | return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset]; |
37e55690 JJ |
236 | |
237 | case BFD_RELOC_386_TLS_GOTIE: | |
238 | TRACE ("BFD_RELOC_386_TLS_GOTIE"); | |
55fd94b0 | 239 | return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset]; |
37e55690 | 240 | |
13ae64f3 JJ |
241 | case BFD_RELOC_386_TLS_LE: |
242 | TRACE ("BFD_RELOC_386_TLS_LE"); | |
55fd94b0 | 243 | return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset]; |
13ae64f3 JJ |
244 | |
245 | case BFD_RELOC_386_TLS_GD: | |
246 | TRACE ("BFD_RELOC_386_TLS_GD"); | |
55fd94b0 | 247 | return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset]; |
13ae64f3 JJ |
248 | |
249 | case BFD_RELOC_386_TLS_LDM: | |
250 | TRACE ("BFD_RELOC_386_TLS_LDM"); | |
55fd94b0 | 251 | return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset]; |
13ae64f3 | 252 | |
252b5132 RH |
253 | case BFD_RELOC_16: |
254 | TRACE ("BFD_RELOC_16"); | |
55fd94b0 | 255 | return &elf_howto_table[R_386_16 - R_386_ext_offset]; |
252b5132 RH |
256 | |
257 | case BFD_RELOC_16_PCREL: | |
258 | TRACE ("BFD_RELOC_16_PCREL"); | |
55fd94b0 | 259 | return &elf_howto_table[R_386_PC16 - R_386_ext_offset]; |
252b5132 RH |
260 | |
261 | case BFD_RELOC_8: | |
262 | TRACE ("BFD_RELOC_8"); | |
55fd94b0 | 263 | return &elf_howto_table[R_386_8 - R_386_ext_offset]; |
252b5132 RH |
264 | |
265 | case BFD_RELOC_8_PCREL: | |
266 | TRACE ("BFD_RELOC_8_PCREL"); | |
55fd94b0 | 267 | return &elf_howto_table[R_386_PC8 - R_386_ext_offset]; |
252b5132 | 268 | |
13ae64f3 JJ |
269 | /* Common with Sun TLS implementation. */ |
270 | case BFD_RELOC_386_TLS_LDO_32: | |
271 | TRACE ("BFD_RELOC_386_TLS_LDO_32"); | |
55fd94b0 | 272 | return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset]; |
13ae64f3 JJ |
273 | |
274 | case BFD_RELOC_386_TLS_IE_32: | |
275 | TRACE ("BFD_RELOC_386_TLS_IE_32"); | |
55fd94b0 | 276 | return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
277 | |
278 | case BFD_RELOC_386_TLS_LE_32: | |
279 | TRACE ("BFD_RELOC_386_TLS_LE_32"); | |
55fd94b0 | 280 | return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
281 | |
282 | case BFD_RELOC_386_TLS_DTPMOD32: | |
283 | TRACE ("BFD_RELOC_386_TLS_DTPMOD32"); | |
55fd94b0 | 284 | return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset]; |
13ae64f3 JJ |
285 | |
286 | case BFD_RELOC_386_TLS_DTPOFF32: | |
287 | TRACE ("BFD_RELOC_386_TLS_DTPOFF32"); | |
55fd94b0 | 288 | return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset]; |
13ae64f3 JJ |
289 | |
290 | case BFD_RELOC_386_TLS_TPOFF32: | |
291 | TRACE ("BFD_RELOC_386_TLS_TPOFF32"); | |
55fd94b0 | 292 | return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset]; |
13ae64f3 | 293 | |
252b5132 RH |
294 | case BFD_RELOC_VTABLE_INHERIT: |
295 | TRACE ("BFD_RELOC_VTABLE_INHERIT"); | |
55fd94b0 | 296 | return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset]; |
252b5132 RH |
297 | |
298 | case BFD_RELOC_VTABLE_ENTRY: | |
299 | TRACE ("BFD_RELOC_VTABLE_ENTRY"); | |
55fd94b0 | 300 | return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset]; |
252b5132 RH |
301 | |
302 | default: | |
303 | break; | |
304 | } | |
305 | ||
306 | TRACE ("Unknown"); | |
307 | return 0; | |
308 | } | |
309 | ||
252b5132 | 310 | static void |
55fd94b0 AM |
311 | elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, |
312 | arelent *cache_ptr, | |
313 | Elf_Internal_Rela *dst) | |
252b5132 | 314 | { |
dc47f327 AM |
315 | unsigned int r_type = ELF32_R_TYPE (dst->r_info); |
316 | unsigned int indx; | |
317 | ||
318 | if ((indx = r_type) >= R_386_standard | |
319 | && ((indx = r_type - R_386_ext_offset) - R_386_standard | |
320 | >= R_386_ext - R_386_standard) | |
13ae64f3 JJ |
321 | && ((indx = r_type - R_386_tls_offset) - R_386_ext |
322 | >= R_386_tls - R_386_ext) | |
323 | && ((indx = r_type - R_386_vt_offset) - R_386_tls | |
324 | >= R_386_vt - R_386_tls)) | |
252b5132 | 325 | { |
dc47f327 | 326 | (*_bfd_error_handler) (_("%s: invalid relocation type %d"), |
8f615d07 | 327 | bfd_archive_filename (abfd), (int) r_type); |
55fd94b0 | 328 | indx = R_386_NONE; |
252b5132 | 329 | } |
dc47f327 | 330 | cache_ptr->howto = &elf_howto_table[indx]; |
252b5132 RH |
331 | } |
332 | ||
333 | /* Return whether a symbol name implies a local label. The UnixWare | |
334 | 2.1 cc generates temporary symbols that start with .X, so we | |
335 | recognize them here. FIXME: do other SVR4 compilers also use .X?. | |
336 | If so, we should move the .X recognition into | |
337 | _bfd_elf_is_local_label_name. */ | |
338 | ||
b34976b6 | 339 | static bfd_boolean |
55fd94b0 | 340 | elf_i386_is_local_label_name (bfd *abfd, const char *name) |
252b5132 RH |
341 | { |
342 | if (name[0] == '.' && name[1] == 'X') | |
b34976b6 | 343 | return TRUE; |
252b5132 RH |
344 | |
345 | return _bfd_elf_is_local_label_name (abfd, name); | |
346 | } | |
347 | \f | |
38701953 | 348 | /* Support for core dump NOTE sections. */ |
b34976b6 | 349 | static bfd_boolean |
55fd94b0 | 350 | elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
38701953 AM |
351 | { |
352 | int offset; | |
353 | size_t raw_size; | |
354 | ||
355 | switch (note->descsz) | |
356 | { | |
357 | default: | |
b34976b6 | 358 | return FALSE; |
38701953 AM |
359 | |
360 | case 144: /* Linux/i386 */ | |
361 | /* pr_cursig */ | |
362 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
363 | ||
364 | /* pr_pid */ | |
365 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
366 | ||
367 | /* pr_reg */ | |
368 | offset = 72; | |
369 | raw_size = 68; | |
370 | ||
371 | break; | |
372 | } | |
373 | ||
374 | /* Make a ".reg/999" section. */ | |
375 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
376 | raw_size, note->descpos + offset); | |
377 | } | |
378 | ||
b34976b6 | 379 | static bfd_boolean |
55fd94b0 | 380 | elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
38701953 AM |
381 | { |
382 | switch (note->descsz) | |
383 | { | |
384 | default: | |
b34976b6 | 385 | return FALSE; |
38701953 | 386 | |
fd29389c | 387 | case 124: /* Linux/i386 elf_prpsinfo */ |
38701953 | 388 | elf_tdata (abfd)->core_program |
55fd94b0 | 389 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
38701953 | 390 | elf_tdata (abfd)->core_command |
55fd94b0 | 391 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
38701953 AM |
392 | } |
393 | ||
394 | /* Note that for some reason, a spurious space is tacked | |
395 | onto the end of the args in some (at least one anyway) | |
396 | implementations, so strip it off if it exists. */ | |
397 | ||
398 | { | |
399 | char *command = elf_tdata (abfd)->core_command; | |
400 | int n = strlen (command); | |
401 | ||
402 | if (0 < n && command[n - 1] == ' ') | |
403 | command[n - 1] = '\0'; | |
404 | } | |
405 | ||
b34976b6 | 406 | return TRUE; |
38701953 AM |
407 | } |
408 | \f | |
409 | /* Functions for the i386 ELF linker. | |
410 | ||
411 | In order to gain some understanding of code in this file without | |
412 | knowing all the intricate details of the linker, note the | |
413 | following: | |
414 | ||
415 | Functions named elf_i386_* are called by external routines, other | |
416 | functions are only called locally. elf_i386_* functions appear | |
417 | in this file more or less in the order in which they are called | |
418 | from external routines. eg. elf_i386_check_relocs is called | |
419 | early in the link process, elf_i386_finish_dynamic_sections is | |
420 | one of the last functions. */ | |
421 | ||
252b5132 RH |
422 | |
423 | /* The name of the dynamic interpreter. This is put in the .interp | |
424 | section. */ | |
425 | ||
426 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
427 | ||
a23b6845 AM |
428 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
429 | copying dynamic variables from a shared lib into an app's dynbss | |
430 | section, and instead use a dynamic relocation to point into the | |
431 | shared lib. */ | |
432 | #define ELIMINATE_COPY_RELOCS 1 | |
433 | ||
252b5132 RH |
434 | /* The size in bytes of an entry in the procedure linkage table. */ |
435 | ||
436 | #define PLT_ENTRY_SIZE 16 | |
437 | ||
438 | /* The first entry in an absolute procedure linkage table looks like | |
439 | this. See the SVR4 ABI i386 supplement to see how this works. */ | |
440 | ||
441 | static const bfd_byte elf_i386_plt0_entry[PLT_ENTRY_SIZE] = | |
442 | { | |
443 | 0xff, 0x35, /* pushl contents of address */ | |
444 | 0, 0, 0, 0, /* replaced with address of .got + 4. */ | |
445 | 0xff, 0x25, /* jmp indirect */ | |
446 | 0, 0, 0, 0, /* replaced with address of .got + 8. */ | |
447 | 0, 0, 0, 0 /* pad out to 16 bytes. */ | |
448 | }; | |
449 | ||
450 | /* Subsequent entries in an absolute procedure linkage table look like | |
451 | this. */ | |
452 | ||
453 | static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] = | |
454 | { | |
455 | 0xff, 0x25, /* jmp indirect */ | |
456 | 0, 0, 0, 0, /* replaced with address of this symbol in .got. */ | |
457 | 0x68, /* pushl immediate */ | |
458 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
459 | 0xe9, /* jmp relative */ | |
460 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
461 | }; | |
462 | ||
463 | /* The first entry in a PIC procedure linkage table look like this. */ | |
464 | ||
465 | static const bfd_byte elf_i386_pic_plt0_entry[PLT_ENTRY_SIZE] = | |
466 | { | |
467 | 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */ | |
468 | 0xff, 0xa3, 8, 0, 0, 0, /* jmp *8(%ebx) */ | |
469 | 0, 0, 0, 0 /* pad out to 16 bytes. */ | |
470 | }; | |
471 | ||
472 | /* Subsequent entries in a PIC procedure linkage table look like this. */ | |
473 | ||
474 | static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] = | |
475 | { | |
476 | 0xff, 0xa3, /* jmp *offset(%ebx) */ | |
477 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
478 | 0x68, /* pushl immediate */ | |
479 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
480 | 0xe9, /* jmp relative */ | |
481 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
482 | }; | |
483 | ||
484 | /* The i386 linker needs to keep track of the number of relocs that it | |
ffb2e45b AM |
485 | decides to copy as dynamic relocs in check_relocs for each symbol. |
486 | This is so that it can later discard them if they are found to be | |
487 | unnecessary. We store the information in a field extending the | |
488 | regular ELF linker hash table. */ | |
252b5132 | 489 | |
ffb2e45b | 490 | struct elf_i386_dyn_relocs |
252b5132 | 491 | { |
ffb2e45b | 492 | struct elf_i386_dyn_relocs *next; |
0c715baa AM |
493 | |
494 | /* The input section of the reloc. */ | |
495 | asection *sec; | |
496 | ||
497 | /* Total number of relocs copied for the input section. */ | |
252b5132 | 498 | bfd_size_type count; |
0c715baa AM |
499 | |
500 | /* Number of pc-relative relocs copied for the input section. */ | |
501 | bfd_size_type pc_count; | |
252b5132 RH |
502 | }; |
503 | ||
504 | /* i386 ELF linker hash entry. */ | |
505 | ||
506 | struct elf_i386_link_hash_entry | |
507 | { | |
ebe50bae | 508 | struct elf_link_hash_entry elf; |
252b5132 | 509 | |
0c715baa | 510 | /* Track dynamic relocs copied for this symbol. */ |
ffb2e45b | 511 | struct elf_i386_dyn_relocs *dyn_relocs; |
13ae64f3 | 512 | |
37e55690 JJ |
513 | #define GOT_UNKNOWN 0 |
514 | #define GOT_NORMAL 1 | |
515 | #define GOT_TLS_GD 2 | |
516 | #define GOT_TLS_IE 4 | |
517 | #define GOT_TLS_IE_POS 5 | |
518 | #define GOT_TLS_IE_NEG 6 | |
519 | #define GOT_TLS_IE_BOTH 7 | |
520 | unsigned char tls_type; | |
13ae64f3 JJ |
521 | }; |
522 | ||
523 | #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent)) | |
524 | ||
525 | struct elf_i386_obj_tdata | |
526 | { | |
527 | struct elf_obj_tdata root; | |
528 | ||
529 | /* tls_type for each local got entry. */ | |
530 | char *local_got_tls_type; | |
252b5132 RH |
531 | }; |
532 | ||
13ae64f3 JJ |
533 | #define elf_i386_tdata(abfd) \ |
534 | ((struct elf_i386_obj_tdata *) (abfd)->tdata.any) | |
535 | ||
536 | #define elf_i386_local_got_tls_type(abfd) \ | |
537 | (elf_i386_tdata (abfd)->local_got_tls_type) | |
538 | ||
b34976b6 | 539 | static bfd_boolean |
55fd94b0 | 540 | elf_i386_mkobject (bfd *abfd) |
13ae64f3 JJ |
541 | { |
542 | bfd_size_type amt = sizeof (struct elf_i386_obj_tdata); | |
543 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
544 | if (abfd->tdata.any == NULL) | |
b34976b6 AM |
545 | return FALSE; |
546 | return TRUE; | |
13ae64f3 | 547 | } |
cedb70c5 | 548 | |
252b5132 RH |
549 | /* i386 ELF linker hash table. */ |
550 | ||
551 | struct elf_i386_link_hash_table | |
552 | { | |
ebe50bae | 553 | struct elf_link_hash_table elf; |
252b5132 | 554 | |
6725bdbf AM |
555 | /* Short-cuts to get to dynamic linker sections. */ |
556 | asection *sgot; | |
557 | asection *sgotplt; | |
558 | asection *srelgot; | |
559 | asection *splt; | |
560 | asection *srelplt; | |
561 | asection *sdynbss; | |
562 | asection *srelbss; | |
ec338859 | 563 | |
13ae64f3 JJ |
564 | union { |
565 | bfd_signed_vma refcount; | |
566 | bfd_vma offset; | |
567 | } tls_ldm_got; | |
568 | ||
ec338859 AM |
569 | /* Small local sym to section mapping cache. */ |
570 | struct sym_sec_cache sym_sec; | |
6725bdbf | 571 | }; |
252b5132 RH |
572 | |
573 | /* Get the i386 ELF linker hash table from a link_info structure. */ | |
574 | ||
575 | #define elf_i386_hash_table(p) \ | |
576 | ((struct elf_i386_link_hash_table *) ((p)->hash)) | |
577 | ||
578 | /* Create an entry in an i386 ELF linker hash table. */ | |
579 | ||
580 | static struct bfd_hash_entry * | |
55fd94b0 AM |
581 | link_hash_newfunc (struct bfd_hash_entry *entry, |
582 | struct bfd_hash_table *table, | |
583 | const char *string) | |
252b5132 | 584 | { |
252b5132 RH |
585 | /* Allocate the structure if it has not already been allocated by a |
586 | subclass. */ | |
ebe50bae AM |
587 | if (entry == NULL) |
588 | { | |
589 | entry = bfd_hash_allocate (table, | |
590 | sizeof (struct elf_i386_link_hash_entry)); | |
591 | if (entry == NULL) | |
592 | return entry; | |
593 | } | |
252b5132 RH |
594 | |
595 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
596 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
597 | if (entry != NULL) | |
252b5132 | 598 | { |
ebe50bae AM |
599 | struct elf_i386_link_hash_entry *eh; |
600 | ||
601 | eh = (struct elf_i386_link_hash_entry *) entry; | |
602 | eh->dyn_relocs = NULL; | |
13ae64f3 | 603 | eh->tls_type = GOT_UNKNOWN; |
252b5132 RH |
604 | } |
605 | ||
ebe50bae | 606 | return entry; |
252b5132 RH |
607 | } |
608 | ||
609 | /* Create an i386 ELF linker hash table. */ | |
610 | ||
611 | static struct bfd_link_hash_table * | |
55fd94b0 | 612 | elf_i386_link_hash_table_create (bfd *abfd) |
252b5132 RH |
613 | { |
614 | struct elf_i386_link_hash_table *ret; | |
dc810e39 | 615 | bfd_size_type amt = sizeof (struct elf_i386_link_hash_table); |
252b5132 | 616 | |
55fd94b0 | 617 | ret = bfd_malloc (amt); |
ebe50bae | 618 | if (ret == NULL) |
252b5132 RH |
619 | return NULL; |
620 | ||
ebe50bae | 621 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc)) |
252b5132 | 622 | { |
e2d34d7d | 623 | free (ret); |
252b5132 RH |
624 | return NULL; |
625 | } | |
626 | ||
6725bdbf AM |
627 | ret->sgot = NULL; |
628 | ret->sgotplt = NULL; | |
629 | ret->srelgot = NULL; | |
630 | ret->splt = NULL; | |
631 | ret->srelplt = NULL; | |
632 | ret->sdynbss = NULL; | |
633 | ret->srelbss = NULL; | |
7a624474 | 634 | ret->tls_ldm_got.refcount = 0; |
ec338859 | 635 | ret->sym_sec.abfd = NULL; |
6725bdbf | 636 | |
ebe50bae | 637 | return &ret->elf.root; |
252b5132 RH |
638 | } |
639 | ||
6725bdbf AM |
640 | /* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up |
641 | shortcuts to them in our hash table. */ | |
642 | ||
b34976b6 | 643 | static bfd_boolean |
55fd94b0 | 644 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
6725bdbf AM |
645 | { |
646 | struct elf_i386_link_hash_table *htab; | |
647 | ||
648 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 649 | return FALSE; |
6725bdbf AM |
650 | |
651 | htab = elf_i386_hash_table (info); | |
652 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
653 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
654 | if (!htab->sgot || !htab->sgotplt) | |
655 | abort (); | |
656 | ||
657 | htab->srelgot = bfd_make_section (dynobj, ".rel.got"); | |
658 | if (htab->srelgot == NULL | |
659 | || ! bfd_set_section_flags (dynobj, htab->srelgot, | |
660 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
661 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
662 | | SEC_READONLY)) | |
663 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) | |
b34976b6 AM |
664 | return FALSE; |
665 | return TRUE; | |
6725bdbf AM |
666 | } |
667 | ||
668 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and | |
669 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
670 | hash table. */ | |
671 | ||
b34976b6 | 672 | static bfd_boolean |
55fd94b0 | 673 | elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
6725bdbf AM |
674 | { |
675 | struct elf_i386_link_hash_table *htab; | |
676 | ||
677 | htab = elf_i386_hash_table (info); | |
678 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
b34976b6 | 679 | return FALSE; |
6725bdbf AM |
680 | |
681 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 682 | return FALSE; |
6725bdbf AM |
683 | |
684 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
685 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt"); | |
686 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
687 | if (!info->shared) | |
688 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
689 | ||
690 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
691 | || (!info->shared && !htab->srelbss)) | |
692 | abort (); | |
693 | ||
b34976b6 | 694 | return TRUE; |
6725bdbf AM |
695 | } |
696 | ||
ebe50bae AM |
697 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
698 | ||
51b64d56 | 699 | static void |
9c5bfbb7 | 700 | elf_i386_copy_indirect_symbol (const struct elf_backend_data *bed, |
55fd94b0 AM |
701 | struct elf_link_hash_entry *dir, |
702 | struct elf_link_hash_entry *ind) | |
ebe50bae AM |
703 | { |
704 | struct elf_i386_link_hash_entry *edir, *eind; | |
705 | ||
706 | edir = (struct elf_i386_link_hash_entry *) dir; | |
707 | eind = (struct elf_i386_link_hash_entry *) ind; | |
708 | ||
bbd7ec4a | 709 | if (eind->dyn_relocs != NULL) |
ebe50bae | 710 | { |
bbd7ec4a AM |
711 | if (edir->dyn_relocs != NULL) |
712 | { | |
713 | struct elf_i386_dyn_relocs **pp; | |
714 | struct elf_i386_dyn_relocs *p; | |
715 | ||
1e370bd2 | 716 | if (ind->root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
717 | abort (); |
718 | ||
719 | /* Add reloc counts against the weak sym to the strong sym | |
720 | list. Merge any entries against the same section. */ | |
721 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
722 | { | |
723 | struct elf_i386_dyn_relocs *q; | |
724 | ||
725 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
726 | if (q->sec == p->sec) | |
727 | { | |
728 | q->pc_count += p->pc_count; | |
729 | q->count += p->count; | |
730 | *pp = p->next; | |
731 | break; | |
732 | } | |
733 | if (q == NULL) | |
734 | pp = &p->next; | |
735 | } | |
736 | *pp = edir->dyn_relocs; | |
737 | } | |
738 | ||
ebe50bae AM |
739 | edir->dyn_relocs = eind->dyn_relocs; |
740 | eind->dyn_relocs = NULL; | |
741 | } | |
ebe50bae | 742 | |
cd67d266 JJ |
743 | if (ind->root.type == bfd_link_hash_indirect |
744 | && dir->got.refcount <= 0) | |
745 | { | |
746 | edir->tls_type = eind->tls_type; | |
747 | eind->tls_type = GOT_UNKNOWN; | |
748 | } | |
81848ca0 AM |
749 | |
750 | if (ELIMINATE_COPY_RELOCS | |
751 | && ind->root.type != bfd_link_hash_indirect | |
752 | && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0) | |
753 | /* If called to transfer flags for a weakdef during processing | |
754 | of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF. | |
755 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
756 | dir->elf_link_hash_flags |= | |
757 | (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC | |
758 | | ELF_LINK_HASH_REF_REGULAR | |
3addb0a9 | 759 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK |
c6585bbb JJ |
760 | | ELF_LINK_HASH_NEEDS_PLT |
761 | | ELF_LINK_POINTER_EQUALITY_NEEDED)); | |
81848ca0 AM |
762 | else |
763 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); | |
ebe50bae AM |
764 | } |
765 | ||
13ae64f3 | 766 | static int |
55fd94b0 | 767 | elf_i386_tls_transition (struct bfd_link_info *info, int r_type, int is_local) |
13ae64f3 JJ |
768 | { |
769 | if (info->shared) | |
770 | return r_type; | |
771 | ||
772 | switch (r_type) | |
773 | { | |
774 | case R_386_TLS_GD: | |
775 | case R_386_TLS_IE_32: | |
776 | if (is_local) | |
777 | return R_386_TLS_LE_32; | |
778 | return R_386_TLS_IE_32; | |
37e55690 JJ |
779 | case R_386_TLS_IE: |
780 | case R_386_TLS_GOTIE: | |
781 | if (is_local) | |
782 | return R_386_TLS_LE_32; | |
783 | return r_type; | |
13ae64f3 JJ |
784 | case R_386_TLS_LDM: |
785 | return R_386_TLS_LE_32; | |
786 | } | |
787 | ||
788 | return r_type; | |
789 | } | |
790 | ||
252b5132 | 791 | /* Look through the relocs for a section during the first phase, and |
0ac8d2ca AM |
792 | calculate needed space in the global offset table, procedure linkage |
793 | table, and dynamic reloc sections. */ | |
252b5132 | 794 | |
b34976b6 | 795 | static bfd_boolean |
55fd94b0 AM |
796 | elf_i386_check_relocs (bfd *abfd, |
797 | struct bfd_link_info *info, | |
798 | asection *sec, | |
799 | const Elf_Internal_Rela *relocs) | |
252b5132 | 800 | { |
6725bdbf | 801 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
802 | Elf_Internal_Shdr *symtab_hdr; |
803 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
804 | const Elf_Internal_Rela *rel; |
805 | const Elf_Internal_Rela *rel_end; | |
252b5132 RH |
806 | asection *sreloc; |
807 | ||
1049f94e | 808 | if (info->relocatable) |
b34976b6 | 809 | return TRUE; |
252b5132 | 810 | |
6725bdbf | 811 | htab = elf_i386_hash_table (info); |
252b5132 RH |
812 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
813 | sym_hashes = elf_sym_hashes (abfd); | |
252b5132 | 814 | |
252b5132 RH |
815 | sreloc = NULL; |
816 | ||
817 | rel_end = relocs + sec->reloc_count; | |
818 | for (rel = relocs; rel < rel_end; rel++) | |
819 | { | |
13ae64f3 | 820 | unsigned int r_type; |
252b5132 RH |
821 | unsigned long r_symndx; |
822 | struct elf_link_hash_entry *h; | |
823 | ||
824 | r_symndx = ELF32_R_SYM (rel->r_info); | |
13ae64f3 | 825 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 826 | |
d9bc7a44 | 827 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
f5f31454 | 828 | { |
8f615d07 AM |
829 | (*_bfd_error_handler) (_("%s: bad symbol index: %d"), |
830 | bfd_archive_filename (abfd), | |
831 | r_symndx); | |
b34976b6 | 832 | return FALSE; |
f5f31454 L |
833 | } |
834 | ||
252b5132 RH |
835 | if (r_symndx < symtab_hdr->sh_info) |
836 | h = NULL; | |
837 | else | |
838 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
839 | ||
13ae64f3 JJ |
840 | r_type = elf_i386_tls_transition (info, r_type, h == NULL); |
841 | ||
842 | switch (r_type) | |
252b5132 | 843 | { |
37e55690 JJ |
844 | case R_386_TLS_LDM: |
845 | htab->tls_ldm_got.refcount += 1; | |
846 | goto create_got; | |
847 | ||
848 | case R_386_PLT32: | |
849 | /* This symbol requires a procedure linkage table entry. We | |
850 | actually build the entry in adjust_dynamic_symbol, | |
851 | because this might be a case of linking PIC code which is | |
852 | never referenced by a dynamic object, in which case we | |
853 | don't need to generate a procedure linkage table entry | |
854 | after all. */ | |
855 | ||
856 | /* If this is a local symbol, we resolve it directly without | |
857 | creating a procedure linkage table entry. */ | |
858 | if (h == NULL) | |
859 | continue; | |
860 | ||
861 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
862 | h->plt.refcount += 1; | |
863 | break; | |
864 | ||
13ae64f3 | 865 | case R_386_TLS_IE_32: |
37e55690 JJ |
866 | case R_386_TLS_IE: |
867 | case R_386_TLS_GOTIE: | |
13ae64f3 JJ |
868 | if (info->shared) |
869 | info->flags |= DF_STATIC_TLS; | |
37e55690 JJ |
870 | /* Fall through */ |
871 | ||
252b5132 | 872 | case R_386_GOT32: |
13ae64f3 | 873 | case R_386_TLS_GD: |
252b5132 | 874 | /* This symbol requires a global offset table entry. */ |
13ae64f3 JJ |
875 | { |
876 | int tls_type, old_tls_type; | |
877 | ||
878 | switch (r_type) | |
879 | { | |
880 | default: | |
881 | case R_386_GOT32: tls_type = GOT_NORMAL; break; | |
882 | case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; | |
37e55690 JJ |
883 | case R_386_TLS_IE_32: |
884 | if (ELF32_R_TYPE (rel->r_info) == r_type) | |
885 | tls_type = GOT_TLS_IE_NEG; | |
886 | else | |
887 | /* If this is a GD->IE transition, we may use either of | |
888 | R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ | |
889 | tls_type = GOT_TLS_IE; | |
890 | break; | |
891 | case R_386_TLS_IE: | |
892 | case R_386_TLS_GOTIE: | |
893 | tls_type = GOT_TLS_IE_POS; break; | |
13ae64f3 JJ |
894 | } |
895 | ||
896 | if (h != NULL) | |
897 | { | |
898 | h->got.refcount += 1; | |
899 | old_tls_type = elf_i386_hash_entry(h)->tls_type; | |
900 | } | |
901 | else | |
902 | { | |
903 | bfd_signed_vma *local_got_refcounts; | |
904 | ||
905 | /* This is a global offset table entry for a local symbol. */ | |
906 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
907 | if (local_got_refcounts == NULL) | |
908 | { | |
909 | bfd_size_type size; | |
910 | ||
911 | size = symtab_hdr->sh_info; | |
912 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); | |
55fd94b0 | 913 | local_got_refcounts = bfd_zalloc (abfd, size); |
13ae64f3 | 914 | if (local_got_refcounts == NULL) |
b34976b6 | 915 | return FALSE; |
13ae64f3 JJ |
916 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
917 | elf_i386_local_got_tls_type (abfd) | |
918 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
919 | } | |
920 | local_got_refcounts[r_symndx] += 1; | |
921 | old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx]; | |
922 | } | |
923 | ||
37e55690 JJ |
924 | if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) |
925 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
926 | /* If a TLS symbol is accessed using IE at least once, |
927 | there is no point to use dynamic model for it. */ | |
37e55690 JJ |
928 | else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
929 | && (old_tls_type != GOT_TLS_GD | |
930 | || (tls_type & GOT_TLS_IE) == 0)) | |
13ae64f3 | 931 | { |
37e55690 JJ |
932 | if ((old_tls_type & GOT_TLS_IE) && tls_type == GOT_TLS_GD) |
933 | tls_type = old_tls_type; | |
13ae64f3 JJ |
934 | else |
935 | { | |
936 | (*_bfd_error_handler) | |
55fd94b0 AM |
937 | (_("%s: `%s' accessed both as normal and " |
938 | "thread local symbol"), | |
37e55690 JJ |
939 | bfd_archive_filename (abfd), |
940 | h ? h->root.root.string : "<local>"); | |
b34976b6 | 941 | return FALSE; |
13ae64f3 JJ |
942 | } |
943 | } | |
944 | ||
945 | if (old_tls_type != tls_type) | |
946 | { | |
947 | if (h != NULL) | |
948 | elf_i386_hash_entry (h)->tls_type = tls_type; | |
949 | else | |
950 | elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
951 | } | |
952 | } | |
0ac8d2ca AM |
953 | /* Fall through */ |
954 | ||
955 | case R_386_GOTOFF: | |
956 | case R_386_GOTPC: | |
13ae64f3 | 957 | create_got: |
0ac8d2ca AM |
958 | if (htab->sgot == NULL) |
959 | { | |
960 | if (htab->elf.dynobj == NULL) | |
961 | htab->elf.dynobj = abfd; | |
962 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 963 | return FALSE; |
0ac8d2ca | 964 | } |
37e55690 JJ |
965 | if (r_type != R_386_TLS_IE) |
966 | break; | |
967 | /* Fall through */ | |
252b5132 | 968 | |
37e55690 JJ |
969 | case R_386_TLS_LE_32: |
970 | case R_386_TLS_LE: | |
971 | if (!info->shared) | |
972 | break; | |
bffbf940 | 973 | info->flags |= DF_STATIC_TLS; |
b34976b6 | 974 | /* Fall through */ |
252b5132 RH |
975 | |
976 | case R_386_32: | |
977 | case R_386_PC32: | |
12d0ee4a | 978 | if (h != NULL && !info->shared) |
6725bdbf | 979 | { |
12d0ee4a | 980 | /* If this reloc is in a read-only section, we might |
ebe50bae AM |
981 | need a copy reloc. We can't check reliably at this |
982 | stage whether the section is read-only, as input | |
983 | sections have not yet been mapped to output sections. | |
984 | Tentatively set the flag for now, and correct in | |
985 | adjust_dynamic_symbol. */ | |
986 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
12d0ee4a AM |
987 | |
988 | /* We may need a .plt entry if the function this reloc | |
989 | refers to is in a shared lib. */ | |
51b64d56 | 990 | h->plt.refcount += 1; |
c6585bbb JJ |
991 | if (r_type != R_386_PC32) |
992 | h->elf_link_hash_flags |= ELF_LINK_POINTER_EQUALITY_NEEDED; | |
6725bdbf | 993 | } |
7843f00e | 994 | |
252b5132 | 995 | /* If we are creating a shared library, and this is a reloc |
f69da49f AM |
996 | against a global symbol, or a non PC relative reloc |
997 | against a local symbol, then we need to copy the reloc | |
998 | into the shared library. However, if we are linking with | |
999 | -Bsymbolic, we do not need to copy a reloc against a | |
1000 | global symbol which is defined in an object we are | |
1001 | including in the link (i.e., DEF_REGULAR is set). At | |
1002 | this point we have not seen all the input files, so it is | |
1003 | possible that DEF_REGULAR is not set now but will be set | |
1f655a09 L |
1004 | later (it is never cleared). In case of a weak definition, |
1005 | DEF_REGULAR may be cleared later by a strong definition in | |
ebe50bae | 1006 | a shared library. We account for that possibility below by |
1f655a09 L |
1007 | storing information in the relocs_copied field of the hash |
1008 | table entry. A similar situation occurs when creating | |
1009 | shared libraries and symbol visibility changes render the | |
12d0ee4a | 1010 | symbol local. |
56882138 | 1011 | |
12d0ee4a AM |
1012 | If on the other hand, we are creating an executable, we |
1013 | may need to keep relocations for symbols satisfied by a | |
1014 | dynamic library if we manage to avoid copy relocs for the | |
1015 | symbol. */ | |
1016 | if ((info->shared | |
1017 | && (sec->flags & SEC_ALLOC) != 0 | |
13ae64f3 | 1018 | && (r_type != R_386_PC32 |
12d0ee4a AM |
1019 | || (h != NULL |
1020 | && (! info->symbolic | |
1021 | || h->root.type == bfd_link_hash_defweak | |
1022 | || (h->elf_link_hash_flags | |
1023 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
a23b6845 AM |
1024 | || (ELIMINATE_COPY_RELOCS |
1025 | && !info->shared | |
12d0ee4a AM |
1026 | && (sec->flags & SEC_ALLOC) != 0 |
1027 | && h != NULL | |
12d0ee4a AM |
1028 | && (h->root.type == bfd_link_hash_defweak |
1029 | || (h->elf_link_hash_flags | |
1030 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
252b5132 | 1031 | { |
ec338859 AM |
1032 | struct elf_i386_dyn_relocs *p; |
1033 | struct elf_i386_dyn_relocs **head; | |
1034 | ||
12d0ee4a AM |
1035 | /* We must copy these reloc types into the output file. |
1036 | Create a reloc section in dynobj and make room for | |
1037 | this reloc. */ | |
252b5132 RH |
1038 | if (sreloc == NULL) |
1039 | { | |
1040 | const char *name; | |
0ac8d2ca | 1041 | bfd *dynobj; |
e92d460e AM |
1042 | unsigned int strndx = elf_elfheader (abfd)->e_shstrndx; |
1043 | unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name; | |
252b5132 | 1044 | |
e92d460e | 1045 | name = bfd_elf_string_from_elf_section (abfd, strndx, shnam); |
252b5132 | 1046 | if (name == NULL) |
b34976b6 | 1047 | return FALSE; |
252b5132 | 1048 | |
c8492176 L |
1049 | if (strncmp (name, ".rel", 4) != 0 |
1050 | || strcmp (bfd_get_section_name (abfd, sec), | |
1051 | name + 4) != 0) | |
1052 | { | |
0c715baa AM |
1053 | (*_bfd_error_handler) |
1054 | (_("%s: bad relocation section name `%s\'"), | |
1055 | bfd_archive_filename (abfd), name); | |
f5f31454 | 1056 | } |
252b5132 | 1057 | |
0ac8d2ca AM |
1058 | if (htab->elf.dynobj == NULL) |
1059 | htab->elf.dynobj = abfd; | |
1060 | ||
1061 | dynobj = htab->elf.dynobj; | |
252b5132 RH |
1062 | sreloc = bfd_get_section_by_name (dynobj, name); |
1063 | if (sreloc == NULL) | |
1064 | { | |
1065 | flagword flags; | |
1066 | ||
1067 | sreloc = bfd_make_section (dynobj, name); | |
1068 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
1069 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1070 | if ((sec->flags & SEC_ALLOC) != 0) | |
1071 | flags |= SEC_ALLOC | SEC_LOAD; | |
1072 | if (sreloc == NULL | |
1073 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
1074 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 1075 | return FALSE; |
252b5132 | 1076 | } |
0c715baa | 1077 | elf_section_data (sec)->sreloc = sreloc; |
252b5132 RH |
1078 | } |
1079 | ||
0c715baa AM |
1080 | /* If this is a global symbol, we count the number of |
1081 | relocations we need for this symbol. */ | |
1082 | if (h != NULL) | |
252b5132 | 1083 | { |
ec338859 | 1084 | head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs; |
0c715baa AM |
1085 | } |
1086 | else | |
1087 | { | |
ec338859 AM |
1088 | /* Track dynamic relocs needed for local syms too. |
1089 | We really need local syms available to do this | |
1090 | easily. Oh well. */ | |
1091 | ||
1092 | asection *s; | |
1093 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
1094 | sec, r_symndx); | |
1095 | if (s == NULL) | |
b34976b6 | 1096 | return FALSE; |
ec338859 AM |
1097 | |
1098 | head = ((struct elf_i386_dyn_relocs **) | |
1099 | &elf_section_data (s)->local_dynrel); | |
1100 | } | |
1101 | ||
1102 | p = *head; | |
1103 | if (p == NULL || p->sec != sec) | |
1104 | { | |
1105 | bfd_size_type amt = sizeof *p; | |
55fd94b0 | 1106 | p = bfd_alloc (htab->elf.dynobj, amt); |
ec338859 | 1107 | if (p == NULL) |
b34976b6 | 1108 | return FALSE; |
ec338859 AM |
1109 | p->next = *head; |
1110 | *head = p; | |
1111 | p->sec = sec; | |
1112 | p->count = 0; | |
1113 | p->pc_count = 0; | |
252b5132 | 1114 | } |
ec338859 AM |
1115 | |
1116 | p->count += 1; | |
13ae64f3 | 1117 | if (r_type == R_386_PC32) |
ec338859 | 1118 | p->pc_count += 1; |
252b5132 | 1119 | } |
252b5132 RH |
1120 | break; |
1121 | ||
1122 | /* This relocation describes the C++ object vtable hierarchy. | |
1123 | Reconstruct it for later use during GC. */ | |
1124 | case R_386_GNU_VTINHERIT: | |
1125 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1126 | return FALSE; |
252b5132 RH |
1127 | break; |
1128 | ||
1129 | /* This relocation describes which C++ vtable entries are actually | |
1130 | used. Record for later use during GC. */ | |
1131 | case R_386_GNU_VTENTRY: | |
1132 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1133 | return FALSE; |
252b5132 RH |
1134 | break; |
1135 | ||
1136 | default: | |
1137 | break; | |
1138 | } | |
1139 | } | |
1140 | ||
b34976b6 | 1141 | return TRUE; |
252b5132 RH |
1142 | } |
1143 | ||
1144 | /* Return the section that should be marked against GC for a given | |
1145 | relocation. */ | |
1146 | ||
1147 | static asection * | |
55fd94b0 AM |
1148 | elf_i386_gc_mark_hook (asection *sec, |
1149 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1150 | Elf_Internal_Rela *rel, | |
1151 | struct elf_link_hash_entry *h, | |
1152 | Elf_Internal_Sym *sym) | |
252b5132 RH |
1153 | { |
1154 | if (h != NULL) | |
1155 | { | |
1156 | switch (ELF32_R_TYPE (rel->r_info)) | |
1157 | { | |
1158 | case R_386_GNU_VTINHERIT: | |
1159 | case R_386_GNU_VTENTRY: | |
1160 | break; | |
1161 | ||
1162 | default: | |
1163 | switch (h->root.type) | |
1164 | { | |
1165 | case bfd_link_hash_defined: | |
1166 | case bfd_link_hash_defweak: | |
1167 | return h->root.u.def.section; | |
1168 | ||
1169 | case bfd_link_hash_common: | |
1170 | return h->root.u.c.p->section; | |
1171 | ||
1172 | default: | |
1173 | break; | |
1174 | } | |
1175 | } | |
1176 | } | |
1177 | else | |
1e2f5b6e | 1178 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
1179 | |
1180 | return NULL; | |
1181 | } | |
1182 | ||
1183 | /* Update the got entry reference counts for the section being removed. */ | |
1184 | ||
b34976b6 | 1185 | static bfd_boolean |
55fd94b0 AM |
1186 | elf_i386_gc_sweep_hook (bfd *abfd, |
1187 | struct bfd_link_info *info, | |
1188 | asection *sec, | |
1189 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1190 | { |
dd5724d5 AM |
1191 | Elf_Internal_Shdr *symtab_hdr; |
1192 | struct elf_link_hash_entry **sym_hashes; | |
1193 | bfd_signed_vma *local_got_refcounts; | |
1194 | const Elf_Internal_Rela *rel, *relend; | |
dd5724d5 | 1195 | |
ec338859 | 1196 | elf_section_data (sec)->local_dynrel = NULL; |
dd5724d5 | 1197 | |
6725bdbf AM |
1198 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1199 | sym_hashes = elf_sym_hashes (abfd); | |
1200 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
dd5724d5 AM |
1201 | |
1202 | relend = relocs + sec->reloc_count; | |
1203 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1204 | { |
1205 | unsigned long r_symndx; | |
1206 | unsigned int r_type; | |
1207 | struct elf_link_hash_entry *h = NULL; | |
37e55690 | 1208 | |
26e41594 AM |
1209 | r_symndx = ELF32_R_SYM (rel->r_info); |
1210 | if (r_symndx >= symtab_hdr->sh_info) | |
1211 | { | |
1212 | struct elf_i386_link_hash_entry *eh; | |
1213 | struct elf_i386_dyn_relocs **pp; | |
1214 | struct elf_i386_dyn_relocs *p; | |
dd5724d5 | 1215 | |
26e41594 AM |
1216 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1217 | eh = (struct elf_i386_link_hash_entry *) h; | |
0c715baa | 1218 | |
26e41594 AM |
1219 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1220 | if (p->sec == sec) | |
1221 | { | |
1222 | /* Everything must go for SEC. */ | |
1223 | *pp = p->next; | |
1224 | break; | |
1225 | } | |
1226 | } | |
0c715baa | 1227 | |
26e41594 AM |
1228 | r_type = ELF32_R_TYPE (rel->r_info); |
1229 | r_type = elf_i386_tls_transition (info, r_type, h != NULL); | |
1230 | switch (r_type) | |
1231 | { | |
1232 | case R_386_TLS_LDM: | |
1233 | if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0) | |
1234 | elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1; | |
1235 | break; | |
0c715baa | 1236 | |
26e41594 AM |
1237 | case R_386_TLS_GD: |
1238 | case R_386_TLS_IE_32: | |
1239 | case R_386_TLS_IE: | |
1240 | case R_386_TLS_GOTIE: | |
1241 | case R_386_GOT32: | |
1242 | if (h != NULL) | |
1243 | { | |
1244 | if (h->got.refcount > 0) | |
1245 | h->got.refcount -= 1; | |
1246 | } | |
1247 | else if (local_got_refcounts != NULL) | |
1248 | { | |
1249 | if (local_got_refcounts[r_symndx] > 0) | |
1250 | local_got_refcounts[r_symndx] -= 1; | |
1251 | } | |
1252 | break; | |
0c715baa | 1253 | |
26e41594 AM |
1254 | case R_386_32: |
1255 | case R_386_PC32: | |
1256 | if (info->shared) | |
1257 | break; | |
1258 | /* Fall through */ | |
6725bdbf | 1259 | |
26e41594 AM |
1260 | case R_386_PLT32: |
1261 | if (h != NULL) | |
1262 | { | |
1263 | if (h->plt.refcount > 0) | |
1264 | h->plt.refcount -= 1; | |
1265 | } | |
1266 | break; | |
dd5724d5 | 1267 | |
26e41594 AM |
1268 | default: |
1269 | break; | |
1270 | } | |
1271 | } | |
252b5132 | 1272 | |
b34976b6 | 1273 | return TRUE; |
252b5132 RH |
1274 | } |
1275 | ||
1276 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1277 | regular object. The current definition is in some section of the | |
1278 | dynamic object, but we're not including those sections. We have to | |
1279 | change the definition to something the rest of the link can | |
1280 | understand. */ | |
1281 | ||
b34976b6 | 1282 | static bfd_boolean |
55fd94b0 AM |
1283 | elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info, |
1284 | struct elf_link_hash_entry *h) | |
252b5132 | 1285 | { |
6725bdbf | 1286 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1287 | asection *s; |
1288 | unsigned int power_of_two; | |
1289 | ||
252b5132 RH |
1290 | /* If this is a function, put it in the procedure linkage table. We |
1291 | will fill in the contents of the procedure linkage table later, | |
1292 | when we know the address of the .got section. */ | |
1293 | if (h->type == STT_FUNC | |
1294 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1295 | { | |
6725bdbf | 1296 | if (h->plt.refcount <= 0 |
9c7a29a3 AM |
1297 | || SYMBOL_CALLS_LOCAL (info, h) |
1298 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1299 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
1300 | { |
1301 | /* This case can occur if we saw a PLT32 reloc in an input | |
dd5724d5 AM |
1302 | file, but the symbol was never referred to by a dynamic |
1303 | object, or if all references were garbage collected. In | |
1304 | such a case, we don't actually need to build a procedure | |
1305 | linkage table, and we can just do a PC32 reloc instead. */ | |
bbd7ec4a | 1306 | h->plt.offset = (bfd_vma) -1; |
dd5724d5 | 1307 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
252b5132 RH |
1308 | } |
1309 | ||
b34976b6 | 1310 | return TRUE; |
252b5132 | 1311 | } |
6725bdbf AM |
1312 | else |
1313 | /* It's possible that we incorrectly decided a .plt reloc was | |
1314 | needed for an R_386_PC32 reloc to a non-function sym in | |
1315 | check_relocs. We can't decide accurately between function and | |
1316 | non-function syms in check-relocs; Objects loaded later in | |
1317 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1318 | h->plt.offset = (bfd_vma) -1; |
252b5132 RH |
1319 | |
1320 | /* If this is a weak symbol, and there is a real definition, the | |
1321 | processor independent code will have arranged for us to see the | |
1322 | real definition first, and we can just use the same value. */ | |
1323 | if (h->weakdef != NULL) | |
1324 | { | |
1325 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1326 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1327 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1328 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
a23b6845 AM |
1329 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
1330 | h->elf_link_hash_flags | |
1331 | = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF) | |
1332 | | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF)); | |
b34976b6 | 1333 | return TRUE; |
252b5132 RH |
1334 | } |
1335 | ||
1336 | /* This is a reference to a symbol defined by a dynamic object which | |
1337 | is not a function. */ | |
1338 | ||
1339 | /* If we are creating a shared library, we must presume that the | |
1340 | only references to the symbol are via the global offset table. | |
1341 | For such cases we need not do anything here; the relocations will | |
1342 | be handled correctly by relocate_section. */ | |
1343 | if (info->shared) | |
b34976b6 | 1344 | return TRUE; |
252b5132 | 1345 | |
7843f00e ILT |
1346 | /* If there are no references to this symbol that do not use the |
1347 | GOT, we don't need to generate a copy reloc. */ | |
1348 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
b34976b6 | 1349 | return TRUE; |
7843f00e | 1350 | |
8bd621d8 AM |
1351 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1352 | if (info->nocopyreloc) | |
1353 | { | |
1354 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
b34976b6 | 1355 | return TRUE; |
8bd621d8 AM |
1356 | } |
1357 | ||
a23b6845 | 1358 | if (ELIMINATE_COPY_RELOCS) |
ebe50bae | 1359 | { |
a23b6845 AM |
1360 | struct elf_i386_link_hash_entry * eh; |
1361 | struct elf_i386_dyn_relocs *p; | |
ebe50bae | 1362 | |
a23b6845 AM |
1363 | eh = (struct elf_i386_link_hash_entry *) h; |
1364 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1365 | { | |
1366 | s = p->sec->output_section; | |
1367 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1368 | break; | |
1369 | } | |
1370 | ||
1371 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1372 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1373 | if (p == NULL) | |
1374 | { | |
1375 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
1376 | return TRUE; | |
1377 | } | |
ebe50bae AM |
1378 | } |
1379 | ||
252b5132 RH |
1380 | /* We must allocate the symbol in our .dynbss section, which will |
1381 | become part of the .bss section of the executable. There will be | |
1382 | an entry for this symbol in the .dynsym section. The dynamic | |
1383 | object will contain position independent code, so all references | |
1384 | from the dynamic object to this symbol will go through the global | |
1385 | offset table. The dynamic linker will use the .dynsym entry to | |
1386 | determine the address it must put in the global offset table, so | |
1387 | both the dynamic object and the regular object will refer to the | |
1388 | same memory location for the variable. */ | |
1389 | ||
0ac8d2ca | 1390 | htab = elf_i386_hash_table (info); |
252b5132 RH |
1391 | |
1392 | /* We must generate a R_386_COPY reloc to tell the dynamic linker to | |
1393 | copy the initial value out of the dynamic object and into the | |
0ac8d2ca | 1394 | runtime process image. */ |
252b5132 RH |
1395 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1396 | { | |
0ac8d2ca | 1397 | htab->srelbss->_raw_size += sizeof (Elf32_External_Rel); |
252b5132 RH |
1398 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
1399 | } | |
1400 | ||
1401 | /* We need to figure out the alignment required for this symbol. I | |
1402 | have no idea how ELF linkers handle this. */ | |
1403 | power_of_two = bfd_log2 (h->size); | |
1404 | if (power_of_two > 3) | |
1405 | power_of_two = 3; | |
1406 | ||
1407 | /* Apply the required alignment. */ | |
0ac8d2ca AM |
1408 | s = htab->sdynbss; |
1409 | s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two)); | |
1410 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
252b5132 | 1411 | { |
0ac8d2ca | 1412 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 1413 | return FALSE; |
252b5132 RH |
1414 | } |
1415 | ||
1416 | /* Define the symbol as being at this point in the section. */ | |
1417 | h->root.u.def.section = s; | |
1418 | h->root.u.def.value = s->_raw_size; | |
1419 | ||
1420 | /* Increment the section size to make room for the symbol. */ | |
1421 | s->_raw_size += h->size; | |
1422 | ||
b34976b6 | 1423 | return TRUE; |
252b5132 RH |
1424 | } |
1425 | ||
6725bdbf AM |
1426 | /* This is the condition under which elf_i386_finish_dynamic_symbol |
1427 | will be called from elflink.h. If elflink.h doesn't call our | |
1428 | finish_dynamic_symbol routine, we'll need to do something about | |
1429 | initializing any .plt and .got entries in elf_i386_relocate_section. */ | |
26e41594 | 1430 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ |
6725bdbf | 1431 | ((DYN) \ |
26e41594 | 1432 | && ((SHARED) \ |
6725bdbf AM |
1433 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ |
1434 | && ((H)->dynindx != -1 \ | |
1435 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
1436 | ||
1437 | /* Allocate space in .plt, .got and associated reloc sections for | |
0c715baa | 1438 | dynamic relocs. */ |
6725bdbf | 1439 | |
b34976b6 | 1440 | static bfd_boolean |
55fd94b0 | 1441 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
6725bdbf AM |
1442 | { |
1443 | struct bfd_link_info *info; | |
1444 | struct elf_i386_link_hash_table *htab; | |
5a15f56f | 1445 | struct elf_i386_link_hash_entry *eh; |
0c715baa | 1446 | struct elf_i386_dyn_relocs *p; |
6725bdbf | 1447 | |
e92d460e | 1448 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1449 | return TRUE; |
6725bdbf | 1450 | |
e92d460e AM |
1451 | if (h->root.type == bfd_link_hash_warning) |
1452 | /* When warning symbols are created, they **replace** the "real" | |
1453 | entry in the hash table, thus we never get to see the real | |
1454 | symbol in a hash traversal. So look at it now. */ | |
1455 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1456 | ||
6725bdbf AM |
1457 | info = (struct bfd_link_info *) inf; |
1458 | htab = elf_i386_hash_table (info); | |
1459 | ||
ebe50bae | 1460 | if (htab->elf.dynamic_sections_created |
9c7a29a3 | 1461 | && h->plt.refcount > 0) |
6725bdbf | 1462 | { |
5a15f56f AM |
1463 | /* Make sure this symbol is output as a dynamic symbol. |
1464 | Undefined weak syms won't yet be marked as dynamic. */ | |
1465 | if (h->dynindx == -1 | |
1466 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1467 | { | |
1468 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1469 | return FALSE; |
5a15f56f AM |
1470 | } |
1471 | ||
4e795f50 AM |
1472 | if (info->shared |
1473 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
ced53ee5 | 1474 | { |
0ac8d2ca | 1475 | asection *s = htab->splt; |
6725bdbf | 1476 | |
ced53ee5 AM |
1477 | /* If this is the first .plt entry, make room for the special |
1478 | first entry. */ | |
1479 | if (s->_raw_size == 0) | |
1480 | s->_raw_size += PLT_ENTRY_SIZE; | |
6725bdbf | 1481 | |
ced53ee5 | 1482 | h->plt.offset = s->_raw_size; |
6725bdbf | 1483 | |
ced53ee5 AM |
1484 | /* If this symbol is not defined in a regular file, and we are |
1485 | not generating a shared library, then set the symbol to this | |
1486 | location in the .plt. This is required to make function | |
1487 | pointers compare as equal between the normal executable and | |
1488 | the shared library. */ | |
1489 | if (! info->shared | |
1490 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1491 | { | |
1492 | h->root.u.def.section = s; | |
1493 | h->root.u.def.value = h->plt.offset; | |
1494 | } | |
6725bdbf | 1495 | |
ced53ee5 AM |
1496 | /* Make room for this entry. */ |
1497 | s->_raw_size += PLT_ENTRY_SIZE; | |
6725bdbf | 1498 | |
ced53ee5 AM |
1499 | /* We also need to make an entry in the .got.plt section, which |
1500 | will be placed in the .got section by the linker script. */ | |
0ac8d2ca | 1501 | htab->sgotplt->_raw_size += 4; |
6725bdbf | 1502 | |
6725bdbf | 1503 | /* We also need to make an entry in the .rel.plt section. */ |
0ac8d2ca | 1504 | htab->srelplt->_raw_size += sizeof (Elf32_External_Rel); |
6725bdbf | 1505 | } |
ced53ee5 AM |
1506 | else |
1507 | { | |
51b64d56 | 1508 | h->plt.offset = (bfd_vma) -1; |
ced53ee5 AM |
1509 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
1510 | } | |
6725bdbf AM |
1511 | } |
1512 | else | |
1513 | { | |
51b64d56 | 1514 | h->plt.offset = (bfd_vma) -1; |
6725bdbf AM |
1515 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
1516 | } | |
1517 | ||
37e55690 | 1518 | /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, |
13ae64f3 JJ |
1519 | make it a R_386_TLS_LE_32 requiring no TLS entry. */ |
1520 | if (h->got.refcount > 0 | |
1521 | && !info->shared | |
1522 | && h->dynindx == -1 | |
37e55690 | 1523 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE)) |
cedb70c5 | 1524 | h->got.offset = (bfd_vma) -1; |
13ae64f3 | 1525 | else if (h->got.refcount > 0) |
6725bdbf | 1526 | { |
0ac8d2ca | 1527 | asection *s; |
b34976b6 | 1528 | bfd_boolean dyn; |
13ae64f3 | 1529 | int tls_type = elf_i386_hash_entry(h)->tls_type; |
6725bdbf | 1530 | |
5a15f56f AM |
1531 | /* Make sure this symbol is output as a dynamic symbol. |
1532 | Undefined weak syms won't yet be marked as dynamic. */ | |
1533 | if (h->dynindx == -1 | |
1534 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1535 | { | |
1536 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1537 | return FALSE; |
5a15f56f AM |
1538 | } |
1539 | ||
6725bdbf AM |
1540 | s = htab->sgot; |
1541 | h->got.offset = s->_raw_size; | |
1542 | s->_raw_size += 4; | |
13ae64f3 | 1543 | /* R_386_TLS_GD needs 2 consecutive GOT slots. */ |
37e55690 | 1544 | if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE_BOTH) |
13ae64f3 | 1545 | s->_raw_size += 4; |
ebe50bae | 1546 | dyn = htab->elf.dynamic_sections_created; |
13ae64f3 | 1547 | /* R_386_TLS_IE_32 needs one dynamic relocation, |
37e55690 JJ |
1548 | R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, |
1549 | (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we | |
1550 | need two), R_386_TLS_GD needs one if local symbol and two if | |
1551 | global. */ | |
1552 | if (tls_type == GOT_TLS_IE_BOTH) | |
1553 | htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
1554 | else if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1555 | || (tls_type & GOT_TLS_IE)) | |
13ae64f3 JJ |
1556 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); |
1557 | else if (tls_type == GOT_TLS_GD) | |
1558 | htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
ef5aade5 L |
1559 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1560 | || h->root.type != bfd_link_hash_undefweak) | |
1561 | && (info->shared | |
1562 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
6725bdbf AM |
1563 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); |
1564 | } | |
1565 | else | |
51b64d56 | 1566 | h->got.offset = (bfd_vma) -1; |
6725bdbf | 1567 | |
5a15f56f AM |
1568 | eh = (struct elf_i386_link_hash_entry *) h; |
1569 | if (eh->dyn_relocs == NULL) | |
b34976b6 | 1570 | return TRUE; |
5a15f56f | 1571 | |
0c715baa AM |
1572 | /* In the shared -Bsymbolic case, discard space allocated for |
1573 | dynamic pc-relative relocs against symbols which turn out to be | |
1574 | defined in regular objects. For the normal shared case, discard | |
0ac8d2ca AM |
1575 | space for pc-relative relocs that have become local due to symbol |
1576 | visibility changes. */ | |
0c715baa AM |
1577 | |
1578 | if (info->shared) | |
5a15f56f | 1579 | { |
09695f56 AM |
1580 | /* The only reloc that uses pc_count is R_386_PC32, which will |
1581 | appear on a call or on something like ".long foo - .". We | |
1582 | want calls to protected symbols to resolve directly to the | |
1583 | function rather than going via the plt. If people want | |
1584 | function pointer comparisons to work as expected then they | |
1585 | should avoid writing assembly like ".long foo - .". */ | |
1586 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
5a15f56f | 1587 | { |
0c715baa AM |
1588 | struct elf_i386_dyn_relocs **pp; |
1589 | ||
1590 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1591 | { | |
1592 | p->count -= p->pc_count; | |
1593 | p->pc_count = 0; | |
1594 | if (p->count == 0) | |
1595 | *pp = p->next; | |
1596 | else | |
1597 | pp = &p->next; | |
1598 | } | |
5a15f56f | 1599 | } |
4e795f50 AM |
1600 | |
1601 | /* Also discard relocs on undefined weak syms with non-default | |
1602 | visibility. */ | |
1603 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1604 | && h->root.type == bfd_link_hash_undefweak) | |
1605 | eh->dyn_relocs = NULL; | |
0c715baa | 1606 | } |
a23b6845 | 1607 | else if (ELIMINATE_COPY_RELOCS) |
0c715baa AM |
1608 | { |
1609 | /* For the non-shared case, discard space for relocs against | |
1610 | symbols which turn out to need copy relocs or are not | |
1611 | dynamic. */ | |
1612 | ||
1613 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
1614 | && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1615 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
ebe50bae | 1616 | || (htab->elf.dynamic_sections_created |
0c715baa AM |
1617 | && (h->root.type == bfd_link_hash_undefweak |
1618 | || h->root.type == bfd_link_hash_undefined)))) | |
1619 | { | |
1620 | /* Make sure this symbol is output as a dynamic symbol. | |
1621 | Undefined weak syms won't yet be marked as dynamic. */ | |
1622 | if (h->dynindx == -1 | |
1623 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1624 | { | |
1625 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1626 | return FALSE; |
0c715baa | 1627 | } |
5a15f56f | 1628 | |
0c715baa AM |
1629 | /* If that succeeded, we know we'll be keeping all the |
1630 | relocs. */ | |
1631 | if (h->dynindx != -1) | |
1632 | goto keep; | |
1633 | } | |
1634 | ||
1635 | eh->dyn_relocs = NULL; | |
1636 | ||
ec338859 | 1637 | keep: ; |
5a15f56f AM |
1638 | } |
1639 | ||
0c715baa AM |
1640 | /* Finally, allocate space. */ |
1641 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
12d0ee4a | 1642 | { |
0c715baa AM |
1643 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
1644 | sreloc->_raw_size += p->count * sizeof (Elf32_External_Rel); | |
12d0ee4a AM |
1645 | } |
1646 | ||
b34976b6 | 1647 | return TRUE; |
6725bdbf AM |
1648 | } |
1649 | ||
0c715baa AM |
1650 | /* Find any dynamic relocs that apply to read-only sections. */ |
1651 | ||
b34976b6 | 1652 | static bfd_boolean |
55fd94b0 | 1653 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
0c715baa AM |
1654 | { |
1655 | struct elf_i386_link_hash_entry *eh; | |
1656 | struct elf_i386_dyn_relocs *p; | |
1657 | ||
e92d460e AM |
1658 | if (h->root.type == bfd_link_hash_warning) |
1659 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1660 | ||
0c715baa AM |
1661 | eh = (struct elf_i386_link_hash_entry *) h; |
1662 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1663 | { | |
1664 | asection *s = p->sec->output_section; | |
1665 | ||
1666 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1667 | { | |
1668 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
1669 | ||
1670 | info->flags |= DF_TEXTREL; | |
1671 | ||
1672 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 1673 | return FALSE; |
0c715baa AM |
1674 | } |
1675 | } | |
b34976b6 | 1676 | return TRUE; |
0c715baa AM |
1677 | } |
1678 | ||
252b5132 RH |
1679 | /* Set the sizes of the dynamic sections. */ |
1680 | ||
b34976b6 | 1681 | static bfd_boolean |
55fd94b0 AM |
1682 | elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1683 | struct bfd_link_info *info) | |
252b5132 | 1684 | { |
6725bdbf | 1685 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1686 | bfd *dynobj; |
1687 | asection *s; | |
b34976b6 | 1688 | bfd_boolean relocs; |
0c715baa | 1689 | bfd *ibfd; |
252b5132 | 1690 | |
6725bdbf | 1691 | htab = elf_i386_hash_table (info); |
ebe50bae | 1692 | dynobj = htab->elf.dynobj; |
ffb2e45b AM |
1693 | if (dynobj == NULL) |
1694 | abort (); | |
252b5132 | 1695 | |
ebe50bae | 1696 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
1697 | { |
1698 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 1699 | if (info->executable) |
252b5132 RH |
1700 | { |
1701 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
ffb2e45b AM |
1702 | if (s == NULL) |
1703 | abort (); | |
252b5132 RH |
1704 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
1705 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1706 | } | |
161d71a6 | 1707 | } |
6725bdbf | 1708 | |
0c715baa AM |
1709 | /* Set up .got offsets for local syms, and space for local dynamic |
1710 | relocs. */ | |
1711 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
161d71a6 L |
1712 | { |
1713 | bfd_signed_vma *local_got; | |
1714 | bfd_signed_vma *end_local_got; | |
13ae64f3 | 1715 | char *local_tls_type; |
161d71a6 L |
1716 | bfd_size_type locsymcount; |
1717 | Elf_Internal_Shdr *symtab_hdr; | |
1718 | asection *srel; | |
6725bdbf | 1719 | |
0c715baa | 1720 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
161d71a6 | 1721 | continue; |
6725bdbf | 1722 | |
0c715baa AM |
1723 | for (s = ibfd->sections; s != NULL; s = s->next) |
1724 | { | |
ec338859 | 1725 | struct elf_i386_dyn_relocs *p; |
0c715baa | 1726 | |
ec338859 AM |
1727 | for (p = *((struct elf_i386_dyn_relocs **) |
1728 | &elf_section_data (s)->local_dynrel); | |
1729 | p != NULL; | |
1730 | p = p->next) | |
0c715baa | 1731 | { |
ec338859 AM |
1732 | if (!bfd_is_abs_section (p->sec) |
1733 | && bfd_is_abs_section (p->sec->output_section)) | |
1734 | { | |
1735 | /* Input section has been discarded, either because | |
1736 | it is a copy of a linkonce section or due to | |
1737 | linker script /DISCARD/, so we'll be discarding | |
1738 | the relocs too. */ | |
1739 | } | |
248866a8 | 1740 | else if (p->count != 0) |
ec338859 AM |
1741 | { |
1742 | srel = elf_section_data (p->sec)->sreloc; | |
1743 | srel->_raw_size += p->count * sizeof (Elf32_External_Rel); | |
248866a8 AM |
1744 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1745 | info->flags |= DF_TEXTREL; | |
ec338859 | 1746 | } |
0c715baa AM |
1747 | } |
1748 | } | |
1749 | ||
1750 | local_got = elf_local_got_refcounts (ibfd); | |
161d71a6 L |
1751 | if (!local_got) |
1752 | continue; | |
6725bdbf | 1753 | |
0c715baa | 1754 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
161d71a6 L |
1755 | locsymcount = symtab_hdr->sh_info; |
1756 | end_local_got = local_got + locsymcount; | |
13ae64f3 | 1757 | local_tls_type = elf_i386_local_got_tls_type (ibfd); |
161d71a6 L |
1758 | s = htab->sgot; |
1759 | srel = htab->srelgot; | |
13ae64f3 | 1760 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
161d71a6 L |
1761 | { |
1762 | if (*local_got > 0) | |
6725bdbf | 1763 | { |
161d71a6 L |
1764 | *local_got = s->_raw_size; |
1765 | s->_raw_size += 4; | |
37e55690 JJ |
1766 | if (*local_tls_type == GOT_TLS_GD |
1767 | || *local_tls_type == GOT_TLS_IE_BOTH) | |
13ae64f3 JJ |
1768 | s->_raw_size += 4; |
1769 | if (info->shared | |
1770 | || *local_tls_type == GOT_TLS_GD | |
37e55690 JJ |
1771 | || (*local_tls_type & GOT_TLS_IE)) |
1772 | { | |
1773 | if (*local_tls_type == GOT_TLS_IE_BOTH) | |
1774 | srel->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
1775 | else | |
1776 | srel->_raw_size += sizeof (Elf32_External_Rel); | |
1777 | } | |
6725bdbf | 1778 | } |
161d71a6 L |
1779 | else |
1780 | *local_got = (bfd_vma) -1; | |
6725bdbf | 1781 | } |
252b5132 | 1782 | } |
6725bdbf | 1783 | |
13ae64f3 JJ |
1784 | if (htab->tls_ldm_got.refcount > 0) |
1785 | { | |
1786 | /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM | |
1787 | relocs. */ | |
1788 | htab->tls_ldm_got.offset = htab->sgot->_raw_size; | |
1789 | htab->sgot->_raw_size += 8; | |
1790 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); | |
1791 | } | |
1792 | else | |
1793 | htab->tls_ldm_got.offset = -1; | |
1794 | ||
0c715baa AM |
1795 | /* Allocate global sym .plt and .got entries, and space for global |
1796 | sym dynamic relocs. */ | |
ebe50bae | 1797 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); |
252b5132 | 1798 | |
5a15f56f AM |
1799 | /* We now have determined the sizes of the various dynamic sections. |
1800 | Allocate memory for them. */ | |
b34976b6 | 1801 | relocs = FALSE; |
252b5132 RH |
1802 | for (s = dynobj->sections; s != NULL; s = s->next) |
1803 | { | |
252b5132 RH |
1804 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
1805 | continue; | |
1806 | ||
6725bdbf AM |
1807 | if (s == htab->splt |
1808 | || s == htab->sgot | |
1809 | || s == htab->sgotplt) | |
252b5132 | 1810 | { |
6725bdbf AM |
1811 | /* Strip this section if we don't need it; see the |
1812 | comment below. */ | |
252b5132 | 1813 | } |
6725bdbf | 1814 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rel", 4) == 0) |
252b5132 | 1815 | { |
0ac8d2ca | 1816 | if (s->_raw_size != 0 && s != htab->srelplt) |
b34976b6 | 1817 | relocs = TRUE; |
252b5132 | 1818 | |
0ac8d2ca AM |
1819 | /* We use the reloc_count field as a counter if we need |
1820 | to copy relocs into the output file. */ | |
1821 | s->reloc_count = 0; | |
252b5132 | 1822 | } |
6725bdbf | 1823 | else |
252b5132 RH |
1824 | { |
1825 | /* It's not one of our sections, so don't allocate space. */ | |
1826 | continue; | |
1827 | } | |
1828 | ||
6725bdbf | 1829 | if (s->_raw_size == 0) |
252b5132 | 1830 | { |
0ac8d2ca AM |
1831 | /* If we don't need this section, strip it from the |
1832 | output file. This is mostly to handle .rel.bss and | |
1833 | .rel.plt. We must create both sections in | |
1834 | create_dynamic_sections, because they must be created | |
1835 | before the linker maps input sections to output | |
1836 | sections. The linker does that before | |
1837 | adjust_dynamic_symbol is called, and it is that | |
1838 | function which decides whether anything needs to go | |
1839 | into these sections. */ | |
1840 | ||
7f8d5fc9 | 1841 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
1842 | continue; |
1843 | } | |
1844 | ||
f69da49f AM |
1845 | /* Allocate memory for the section contents. We use bfd_zalloc |
1846 | here in case unused entries are not reclaimed before the | |
1847 | section's contents are written out. This should not happen, | |
1848 | but this way if it does, we get a R_386_NONE reloc instead | |
1849 | of garbage. */ | |
55fd94b0 | 1850 | s->contents = bfd_zalloc (dynobj, s->_raw_size); |
6725bdbf | 1851 | if (s->contents == NULL) |
b34976b6 | 1852 | return FALSE; |
252b5132 RH |
1853 | } |
1854 | ||
ebe50bae | 1855 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
1856 | { |
1857 | /* Add some entries to the .dynamic section. We fill in the | |
1858 | values later, in elf_i386_finish_dynamic_sections, but we | |
1859 | must add the entries now so that we get the correct size for | |
1860 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1861 | dynamic linker and used by the debugger. */ | |
dc810e39 | 1862 | #define add_dynamic_entry(TAG, VAL) \ |
55fd94b0 | 1863 | bfd_elf32_add_dynamic_entry (info, (TAG), (VAL)) |
dc810e39 | 1864 | |
36af4a4e | 1865 | if (info->executable) |
252b5132 | 1866 | { |
dc810e39 | 1867 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1868 | return FALSE; |
252b5132 RH |
1869 | } |
1870 | ||
6725bdbf | 1871 | if (htab->splt->_raw_size != 0) |
252b5132 | 1872 | { |
dc810e39 AM |
1873 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1874 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1875 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
1876 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1877 | return FALSE; |
252b5132 RH |
1878 | } |
1879 | ||
1880 | if (relocs) | |
1881 | { | |
dc810e39 AM |
1882 | if (!add_dynamic_entry (DT_REL, 0) |
1883 | || !add_dynamic_entry (DT_RELSZ, 0) | |
1884 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 1885 | return FALSE; |
252b5132 | 1886 | |
0c715baa AM |
1887 | /* If any dynamic relocs apply to a read-only section, |
1888 | then we need a DT_TEXTREL entry. */ | |
248866a8 AM |
1889 | if ((info->flags & DF_TEXTREL) == 0) |
1890 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
1891 | (PTR) info); | |
0c715baa AM |
1892 | |
1893 | if ((info->flags & DF_TEXTREL) != 0) | |
1894 | { | |
1895 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1896 | return FALSE; |
0c715baa | 1897 | } |
252b5132 RH |
1898 | } |
1899 | } | |
dc810e39 | 1900 | #undef add_dynamic_entry |
252b5132 | 1901 | |
b34976b6 | 1902 | return TRUE; |
252b5132 RH |
1903 | } |
1904 | ||
38701953 AM |
1905 | /* Set the correct type for an x86 ELF section. We do this by the |
1906 | section name, which is a hack, but ought to work. */ | |
1907 | ||
b34976b6 | 1908 | static bfd_boolean |
55fd94b0 AM |
1909 | elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
1910 | Elf_Internal_Shdr *hdr, | |
1911 | asection *sec) | |
38701953 AM |
1912 | { |
1913 | register const char *name; | |
1914 | ||
1915 | name = bfd_get_section_name (abfd, sec); | |
1916 | ||
1917 | /* This is an ugly, but unfortunately necessary hack that is | |
1918 | needed when producing EFI binaries on x86. It tells | |
1919 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
1920 | containing ELF relocation info. We need this hack in order to | |
1921 | be able to generate ELF binaries that can be translated into | |
1922 | EFI applications (which are essentially COFF objects). Those | |
1923 | files contain a COFF ".reloc" section inside an ELFNN object, | |
1924 | which would normally cause BFD to segfault because it would | |
1925 | attempt to interpret this section as containing relocation | |
1926 | entries for section "oc". With this hack enabled, ".reloc" | |
1927 | will be treated as a normal data section, which will avoid the | |
1928 | segfault. However, you won't be able to create an ELFNN binary | |
1929 | with a section named "oc" that needs relocations, but that's | |
1930 | the kind of ugly side-effects you get when detecting section | |
1931 | types based on their names... In practice, this limitation is | |
1932 | unlikely to bite. */ | |
1933 | if (strcmp (name, ".reloc") == 0) | |
1934 | hdr->sh_type = SHT_PROGBITS; | |
1935 | ||
b34976b6 | 1936 | return TRUE; |
38701953 AM |
1937 | } |
1938 | ||
13ae64f3 JJ |
1939 | /* Return the base VMA address which should be subtracted from real addresses |
1940 | when resolving @dtpoff relocation. | |
1941 | This is PT_TLS segment p_vaddr. */ | |
1942 | ||
1943 | static bfd_vma | |
55fd94b0 | 1944 | dtpoff_base (struct bfd_link_info *info) |
13ae64f3 | 1945 | { |
e1918d23 AM |
1946 | /* If tls_sec is NULL, we should have signalled an error already. */ |
1947 | if (elf_hash_table (info)->tls_sec == NULL) | |
6a30718d | 1948 | return 0; |
e1918d23 | 1949 | return elf_hash_table (info)->tls_sec->vma; |
13ae64f3 JJ |
1950 | } |
1951 | ||
1952 | /* Return the relocation value for @tpoff relocation | |
1953 | if STT_TLS virtual address is ADDRESS. */ | |
1954 | ||
1955 | static bfd_vma | |
55fd94b0 | 1956 | tpoff (struct bfd_link_info *info, bfd_vma address) |
13ae64f3 | 1957 | { |
e1918d23 | 1958 | struct elf_link_hash_table *htab = elf_hash_table (info); |
13ae64f3 | 1959 | |
e1918d23 AM |
1960 | /* If tls_sec is NULL, we should have signalled an error already. */ |
1961 | if (htab->tls_sec == NULL) | |
6a30718d | 1962 | return 0; |
e1918d23 | 1963 | return htab->tls_size + htab->tls_sec->vma - address; |
13ae64f3 JJ |
1964 | } |
1965 | ||
252b5132 RH |
1966 | /* Relocate an i386 ELF section. */ |
1967 | ||
b34976b6 | 1968 | static bfd_boolean |
55fd94b0 AM |
1969 | elf_i386_relocate_section (bfd *output_bfd, |
1970 | struct bfd_link_info *info, | |
1971 | bfd *input_bfd, | |
1972 | asection *input_section, | |
1973 | bfd_byte *contents, | |
1974 | Elf_Internal_Rela *relocs, | |
1975 | Elf_Internal_Sym *local_syms, | |
1976 | asection **local_sections) | |
252b5132 | 1977 | { |
6725bdbf | 1978 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1979 | Elf_Internal_Shdr *symtab_hdr; |
1980 | struct elf_link_hash_entry **sym_hashes; | |
1981 | bfd_vma *local_got_offsets; | |
252b5132 RH |
1982 | Elf_Internal_Rela *rel; |
1983 | Elf_Internal_Rela *relend; | |
1984 | ||
6725bdbf | 1985 | htab = elf_i386_hash_table (info); |
252b5132 RH |
1986 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
1987 | sym_hashes = elf_sym_hashes (input_bfd); | |
1988 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1989 | ||
252b5132 RH |
1990 | rel = relocs; |
1991 | relend = relocs + input_section->reloc_count; | |
1992 | for (; rel < relend; rel++) | |
1993 | { | |
13ae64f3 | 1994 | unsigned int r_type; |
252b5132 RH |
1995 | reloc_howto_type *howto; |
1996 | unsigned long r_symndx; | |
1997 | struct elf_link_hash_entry *h; | |
1998 | Elf_Internal_Sym *sym; | |
1999 | asection *sec; | |
ffb2e45b | 2000 | bfd_vma off; |
252b5132 | 2001 | bfd_vma relocation; |
b34976b6 | 2002 | bfd_boolean unresolved_reloc; |
252b5132 | 2003 | bfd_reloc_status_type r; |
1b452ec6 | 2004 | unsigned int indx; |
13ae64f3 | 2005 | int tls_type; |
252b5132 RH |
2006 | |
2007 | r_type = ELF32_R_TYPE (rel->r_info); | |
55fd94b0 AM |
2008 | if (r_type == R_386_GNU_VTINHERIT |
2009 | || r_type == R_386_GNU_VTENTRY) | |
252b5132 | 2010 | continue; |
dc47f327 | 2011 | |
55fd94b0 | 2012 | if ((indx = r_type) >= R_386_standard |
13ae64f3 JJ |
2013 | && ((indx = r_type - R_386_ext_offset) - R_386_standard |
2014 | >= R_386_ext - R_386_standard) | |
2015 | && ((indx = r_type - R_386_tls_offset) - R_386_ext | |
2016 | >= R_386_tls - R_386_ext)) | |
252b5132 RH |
2017 | { |
2018 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2019 | return FALSE; |
252b5132 | 2020 | } |
1b452ec6 | 2021 | howto = elf_howto_table + indx; |
252b5132 RH |
2022 | |
2023 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2024 | ||
1049f94e | 2025 | if (info->relocatable) |
252b5132 | 2026 | { |
4a335f3d | 2027 | bfd_vma val; |
4a335f3d AM |
2028 | bfd_byte *where; |
2029 | ||
0ac8d2ca | 2030 | /* This is a relocatable link. We don't have to change |
252b5132 RH |
2031 | anything, unless the reloc is against a section symbol, |
2032 | in which case we have to adjust according to where the | |
2033 | section symbol winds up in the output section. */ | |
4a335f3d AM |
2034 | if (r_symndx >= symtab_hdr->sh_info) |
2035 | continue; | |
2036 | ||
2037 | sym = local_syms + r_symndx; | |
2038 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
2039 | continue; | |
2040 | ||
2041 | sec = local_sections[r_symndx]; | |
2042 | val = sec->output_offset; | |
2043 | if (val == 0) | |
2044 | continue; | |
2045 | ||
2046 | where = contents + rel->r_offset; | |
2047 | switch (howto->size) | |
252b5132 | 2048 | { |
16a10388 | 2049 | /* FIXME: overflow checks. */ |
4a335f3d | 2050 | case 0: |
16a10388 | 2051 | val += bfd_get_8 (input_bfd, where); |
4a335f3d | 2052 | bfd_put_8 (input_bfd, val, where); |
4a335f3d AM |
2053 | break; |
2054 | case 1: | |
16a10388 | 2055 | val += bfd_get_16 (input_bfd, where); |
4a335f3d | 2056 | bfd_put_16 (input_bfd, val, where); |
4a335f3d AM |
2057 | break; |
2058 | case 2: | |
2059 | val += bfd_get_32 (input_bfd, where); | |
2060 | bfd_put_32 (input_bfd, val, where); | |
2061 | break; | |
2062 | default: | |
2063 | abort (); | |
252b5132 | 2064 | } |
252b5132 RH |
2065 | continue; |
2066 | } | |
2067 | ||
2068 | /* This is a final link. */ | |
2069 | h = NULL; | |
2070 | sym = NULL; | |
2071 | sec = NULL; | |
b34976b6 | 2072 | unresolved_reloc = FALSE; |
252b5132 RH |
2073 | if (r_symndx < symtab_hdr->sh_info) |
2074 | { | |
2075 | sym = local_syms + r_symndx; | |
2076 | sec = local_sections[r_symndx]; | |
2077 | relocation = (sec->output_section->vma | |
2078 | + sec->output_offset | |
2079 | + sym->st_value); | |
f8df10f4 JJ |
2080 | if ((sec->flags & SEC_MERGE) |
2081 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
2082 | { | |
2083 | asection *msec; | |
2084 | bfd_vma addend; | |
4a335f3d | 2085 | bfd_byte *where = contents + rel->r_offset; |
f8df10f4 | 2086 | |
4a335f3d | 2087 | switch (howto->size) |
f8df10f4 | 2088 | { |
4a335f3d AM |
2089 | case 0: |
2090 | addend = bfd_get_8 (input_bfd, where); | |
2091 | if (howto->pc_relative) | |
2092 | { | |
2093 | addend = (addend ^ 0x80) - 0x80; | |
2094 | addend += 1; | |
2095 | } | |
2096 | break; | |
2097 | case 1: | |
2098 | addend = bfd_get_16 (input_bfd, where); | |
2099 | if (howto->pc_relative) | |
2100 | { | |
2101 | addend = (addend ^ 0x8000) - 0x8000; | |
2102 | addend += 2; | |
2103 | } | |
2104 | break; | |
2105 | case 2: | |
2106 | addend = bfd_get_32 (input_bfd, where); | |
2107 | if (howto->pc_relative) | |
2108 | { | |
2109 | addend = (addend ^ 0x80000000) - 0x80000000; | |
2110 | addend += 4; | |
2111 | } | |
2112 | break; | |
2113 | default: | |
2114 | abort (); | |
f8df10f4 JJ |
2115 | } |
2116 | ||
f8df10f4 | 2117 | msec = sec; |
4a335f3d AM |
2118 | addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); |
2119 | addend -= relocation; | |
f8df10f4 | 2120 | addend += msec->output_section->vma + msec->output_offset; |
4a335f3d AM |
2121 | |
2122 | switch (howto->size) | |
2123 | { | |
2124 | case 0: | |
16a10388 | 2125 | /* FIXME: overflow checks. */ |
4a335f3d AM |
2126 | if (howto->pc_relative) |
2127 | addend -= 1; | |
2128 | bfd_put_8 (input_bfd, addend, where); | |
4a335f3d AM |
2129 | break; |
2130 | case 1: | |
2131 | if (howto->pc_relative) | |
2132 | addend -= 2; | |
2133 | bfd_put_16 (input_bfd, addend, where); | |
4a335f3d AM |
2134 | break; |
2135 | case 2: | |
2136 | if (howto->pc_relative) | |
2137 | addend -= 4; | |
2138 | bfd_put_32 (input_bfd, addend, where); | |
2139 | break; | |
2140 | } | |
f8df10f4 | 2141 | } |
252b5132 RH |
2142 | } |
2143 | else | |
2144 | { | |
560e09e9 | 2145 | bfd_boolean warned; |
ffb2e45b | 2146 | |
560e09e9 | 2147 | RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx, symtab_hdr, relocation, sec, unresolved_reloc, info, warned); |
252b5132 RH |
2148 | } |
2149 | ||
2150 | switch (r_type) | |
2151 | { | |
2152 | case R_386_GOT32: | |
2153 | /* Relocation is to the entry for this symbol in the global | |
2154 | offset table. */ | |
ffb2e45b AM |
2155 | if (htab->sgot == NULL) |
2156 | abort (); | |
252b5132 RH |
2157 | |
2158 | if (h != NULL) | |
2159 | { | |
b34976b6 | 2160 | bfd_boolean dyn; |
252b5132 RH |
2161 | |
2162 | off = h->got.offset; | |
ebe50bae | 2163 | dyn = htab->elf.dynamic_sections_created; |
26e41594 | 2164 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
252b5132 | 2165 | || (info->shared |
586119b3 | 2166 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
ef5aade5 L |
2167 | || (ELF_ST_VISIBILITY (h->other) |
2168 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
2169 | { |
2170 | /* This is actually a static link, or it is a | |
2171 | -Bsymbolic link and the symbol is defined | |
2172 | locally, or the symbol was forced to be local | |
2173 | because of a version file. We must initialize | |
2174 | this entry in the global offset table. Since the | |
2175 | offset must always be a multiple of 4, we use the | |
2176 | least significant bit to record whether we have | |
2177 | initialized it already. | |
2178 | ||
2179 | When doing a dynamic link, we create a .rel.got | |
2180 | relocation entry to initialize the value. This | |
2181 | is done in the finish_dynamic_symbol routine. */ | |
2182 | if ((off & 1) != 0) | |
2183 | off &= ~1; | |
2184 | else | |
2185 | { | |
2186 | bfd_put_32 (output_bfd, relocation, | |
6725bdbf | 2187 | htab->sgot->contents + off); |
252b5132 RH |
2188 | h->got.offset |= 1; |
2189 | } | |
2190 | } | |
8c694914 | 2191 | else |
b34976b6 | 2192 | unresolved_reloc = FALSE; |
252b5132 RH |
2193 | } |
2194 | else | |
2195 | { | |
ffb2e45b AM |
2196 | if (local_got_offsets == NULL) |
2197 | abort (); | |
252b5132 RH |
2198 | |
2199 | off = local_got_offsets[r_symndx]; | |
2200 | ||
2201 | /* The offset must always be a multiple of 4. We use | |
83be169b AM |
2202 | the least significant bit to record whether we have |
2203 | already generated the necessary reloc. */ | |
252b5132 RH |
2204 | if ((off & 1) != 0) |
2205 | off &= ~1; | |
2206 | else | |
2207 | { | |
6725bdbf AM |
2208 | bfd_put_32 (output_bfd, relocation, |
2209 | htab->sgot->contents + off); | |
252b5132 RH |
2210 | |
2211 | if (info->shared) | |
2212 | { | |
947216bf AM |
2213 | asection *s; |
2214 | Elf_Internal_Rela outrel; | |
2215 | bfd_byte *loc; | |
252b5132 | 2216 | |
947216bf AM |
2217 | s = htab->srelgot; |
2218 | if (s == NULL) | |
ffb2e45b | 2219 | abort (); |
252b5132 | 2220 | |
6725bdbf AM |
2221 | outrel.r_offset = (htab->sgot->output_section->vma |
2222 | + htab->sgot->output_offset | |
252b5132 RH |
2223 | + off); |
2224 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
947216bf AM |
2225 | loc = s->contents; |
2226 | loc += s->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 2227 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2228 | } |
2229 | ||
2230 | local_got_offsets[r_symndx] |= 1; | |
2231 | } | |
252b5132 RH |
2232 | } |
2233 | ||
ffb2e45b AM |
2234 | if (off >= (bfd_vma) -2) |
2235 | abort (); | |
2236 | ||
2237 | relocation = htab->sgot->output_offset + off; | |
252b5132 RH |
2238 | break; |
2239 | ||
2240 | case R_386_GOTOFF: | |
2241 | /* Relocation is relative to the start of the global offset | |
2242 | table. */ | |
2243 | ||
252b5132 RH |
2244 | /* Note that sgot->output_offset is not involved in this |
2245 | calculation. We always want the start of .got. If we | |
2246 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2247 | permitted by the ABI, we might have to change this | |
2248 | calculation. */ | |
6725bdbf | 2249 | relocation -= htab->sgot->output_section->vma; |
252b5132 RH |
2250 | break; |
2251 | ||
2252 | case R_386_GOTPC: | |
2253 | /* Use global offset table as symbol value. */ | |
6725bdbf | 2254 | relocation = htab->sgot->output_section->vma; |
b34976b6 | 2255 | unresolved_reloc = FALSE; |
252b5132 RH |
2256 | break; |
2257 | ||
2258 | case R_386_PLT32: | |
2259 | /* Relocation is to the entry for this symbol in the | |
2260 | procedure linkage table. */ | |
2261 | ||
dd5724d5 | 2262 | /* Resolve a PLT32 reloc against a local symbol directly, |
83be169b | 2263 | without using the procedure linkage table. */ |
252b5132 RH |
2264 | if (h == NULL) |
2265 | break; | |
2266 | ||
dd5724d5 | 2267 | if (h->plt.offset == (bfd_vma) -1 |
6725bdbf | 2268 | || htab->splt == NULL) |
252b5132 RH |
2269 | { |
2270 | /* We didn't make a PLT entry for this symbol. This | |
83be169b AM |
2271 | happens when statically linking PIC code, or when |
2272 | using -Bsymbolic. */ | |
252b5132 RH |
2273 | break; |
2274 | } | |
2275 | ||
6725bdbf AM |
2276 | relocation = (htab->splt->output_section->vma |
2277 | + htab->splt->output_offset | |
252b5132 | 2278 | + h->plt.offset); |
b34976b6 | 2279 | unresolved_reloc = FALSE; |
252b5132 RH |
2280 | break; |
2281 | ||
2282 | case R_386_32: | |
2283 | case R_386_PC32: | |
ec338859 AM |
2284 | /* r_symndx will be zero only for relocs against symbols |
2285 | from removed linkonce sections, or sections discarded by | |
2286 | a linker script. */ | |
2287 | if (r_symndx == 0 | |
2288 | || (input_section->flags & SEC_ALLOC) == 0) | |
2289 | break; | |
2290 | ||
12d0ee4a | 2291 | if ((info->shared |
ef5aade5 L |
2292 | && (h == NULL |
2293 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2294 | || h->root.type != bfd_link_hash_undefweak) | |
12d0ee4a | 2295 | && (r_type != R_386_PC32 |
f6c52c13 | 2296 | || !SYMBOL_CALLS_LOCAL (info, h))) |
a23b6845 AM |
2297 | || (ELIMINATE_COPY_RELOCS |
2298 | && !info->shared | |
12d0ee4a AM |
2299 | && h != NULL |
2300 | && h->dynindx != -1 | |
2301 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
56882138 AM |
2302 | && (((h->elf_link_hash_flags |
2303 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
2304 | && (h->elf_link_hash_flags | |
2305 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
28d0b90e AM |
2306 | || h->root.type == bfd_link_hash_undefweak |
2307 | || h->root.type == bfd_link_hash_undefined))) | |
252b5132 | 2308 | { |
947216bf AM |
2309 | Elf_Internal_Rela outrel; |
2310 | bfd_byte *loc; | |
b34976b6 | 2311 | bfd_boolean skip, relocate; |
0c715baa | 2312 | asection *sreloc; |
252b5132 RH |
2313 | |
2314 | /* When generating a shared object, these relocations | |
2315 | are copied into the output file to be resolved at run | |
2316 | time. */ | |
2317 | ||
b34976b6 AM |
2318 | skip = FALSE; |
2319 | relocate = FALSE; | |
252b5132 | 2320 | |
c629eae0 JJ |
2321 | outrel.r_offset = |
2322 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2323 | rel->r_offset); | |
2324 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2325 | skip = TRUE; |
0bb2d96a | 2326 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2327 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
2328 | outrel.r_offset += (input_section->output_section->vma |
2329 | + input_section->output_offset); | |
2330 | ||
2331 | if (skip) | |
0bb2d96a | 2332 | memset (&outrel, 0, sizeof outrel); |
5a15f56f AM |
2333 | else if (h != NULL |
2334 | && h->dynindx != -1 | |
2335 | && (r_type == R_386_PC32 | |
2336 | || !info->shared | |
2337 | || !info->symbolic | |
2338 | || (h->elf_link_hash_flags | |
2339 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
0bb2d96a | 2340 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
2341 | else |
2342 | { | |
5a15f56f | 2343 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 2344 | relocate = TRUE; |
5a15f56f | 2345 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
252b5132 RH |
2346 | } |
2347 | ||
0c715baa AM |
2348 | sreloc = elf_section_data (input_section)->sreloc; |
2349 | if (sreloc == NULL) | |
2350 | abort (); | |
2351 | ||
947216bf AM |
2352 | loc = sreloc->contents; |
2353 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
0c715baa | 2354 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2355 | |
2356 | /* If this reloc is against an external symbol, we do | |
2357 | not want to fiddle with the addend. Otherwise, we | |
2358 | need to include the symbol value so that it becomes | |
2359 | an addend for the dynamic reloc. */ | |
2360 | if (! relocate) | |
2361 | continue; | |
2362 | } | |
252b5132 RH |
2363 | break; |
2364 | ||
37e55690 JJ |
2365 | case R_386_TLS_IE: |
2366 | if (info->shared) | |
2367 | { | |
947216bf AM |
2368 | Elf_Internal_Rela outrel; |
2369 | bfd_byte *loc; | |
37e55690 | 2370 | asection *sreloc; |
37e55690 JJ |
2371 | |
2372 | outrel.r_offset = rel->r_offset | |
2373 | + input_section->output_section->vma | |
2374 | + input_section->output_offset; | |
2375 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
2376 | sreloc = elf_section_data (input_section)->sreloc; | |
2377 | if (sreloc == NULL) | |
2378 | abort (); | |
947216bf AM |
2379 | loc = sreloc->contents; |
2380 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
2381 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2382 | } | |
2383 | /* Fall through */ | |
2384 | ||
13ae64f3 JJ |
2385 | case R_386_TLS_GD: |
2386 | case R_386_TLS_IE_32: | |
37e55690 | 2387 | case R_386_TLS_GOTIE: |
13ae64f3 JJ |
2388 | r_type = elf_i386_tls_transition (info, r_type, h == NULL); |
2389 | tls_type = GOT_UNKNOWN; | |
2390 | if (h == NULL && local_got_offsets) | |
2391 | tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx]; | |
2392 | else if (h != NULL) | |
2393 | { | |
2394 | tls_type = elf_i386_hash_entry(h)->tls_type; | |
37e55690 | 2395 | if (!info->shared && h->dynindx == -1 && (tls_type & GOT_TLS_IE)) |
13ae64f3 JJ |
2396 | r_type = R_386_TLS_LE_32; |
2397 | } | |
37e55690 JJ |
2398 | if (tls_type == GOT_TLS_IE) |
2399 | tls_type = GOT_TLS_IE_NEG; | |
2400 | if (r_type == R_386_TLS_GD) | |
2401 | { | |
2402 | if (tls_type == GOT_TLS_IE_POS) | |
2403 | r_type = R_386_TLS_GOTIE; | |
2404 | else if (tls_type & GOT_TLS_IE) | |
2405 | r_type = R_386_TLS_IE_32; | |
2406 | } | |
13ae64f3 JJ |
2407 | |
2408 | if (r_type == R_386_TLS_LE_32) | |
2409 | { | |
82e51918 | 2410 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
2411 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
2412 | { | |
2413 | unsigned int val, type; | |
2414 | bfd_vma roff; | |
2415 | ||
2416 | /* GD->LE transition. */ | |
2417 | BFD_ASSERT (rel->r_offset >= 2); | |
2418 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2419 | BFD_ASSERT (type == 0x8d || type == 0x04); | |
2420 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2421 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2422 | contents + rel->r_offset + 4) | |
2423 | == 0xe8); | |
2424 | BFD_ASSERT (rel + 1 < relend); | |
2425 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2426 | roff = rel->r_offset + 5; | |
2427 | val = bfd_get_8 (input_bfd, | |
2428 | contents + rel->r_offset - 1); | |
2429 | if (type == 0x04) | |
2430 | { | |
2431 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
2432 | Change it into: | |
2433 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2434 | (6 byte form of subl). */ | |
2435 | BFD_ASSERT (rel->r_offset >= 3); | |
2436 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2437 | contents + rel->r_offset - 3) | |
2438 | == 0x8d); | |
2439 | BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3)); | |
2440 | memcpy (contents + rel->r_offset - 3, | |
2441 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
2442 | } | |
2443 | else | |
2444 | { | |
2445 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2446 | if (rel->r_offset + 10 <= input_section->_raw_size | |
2447 | && bfd_get_8 (input_bfd, | |
2448 | contents + rel->r_offset + 9) == 0x90) | |
2449 | { | |
2450 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
2451 | Change it into: | |
2452 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2453 | (6 byte form of subl). */ | |
2454 | memcpy (contents + rel->r_offset - 2, | |
2455 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
2456 | roff = rel->r_offset + 6; | |
2457 | } | |
2458 | else | |
2459 | { | |
2460 | /* leal foo(%reg), %eax; call ___tls_get_addr | |
2461 | Change it into: | |
2462 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2463 | (5 byte form of subl). */ | |
2464 | memcpy (contents + rel->r_offset - 2, | |
2465 | "\x65\xa1\0\0\0\0\x2d\0\0\0", 11); | |
2466 | } | |
2467 | } | |
2468 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
2469 | contents + roff); | |
2470 | /* Skip R_386_PLT32. */ | |
2471 | rel++; | |
2472 | continue; | |
2473 | } | |
37e55690 | 2474 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE) |
13ae64f3 JJ |
2475 | { |
2476 | unsigned int val, type; | |
2477 | ||
2478 | /* IE->LE transition: | |
37e55690 JJ |
2479 | Originally it can be one of: |
2480 | movl foo, %eax | |
2481 | movl foo, %reg | |
2482 | addl foo, %reg | |
2483 | We change it into: | |
2484 | movl $foo, %eax | |
2485 | movl $foo, %reg | |
2486 | addl $foo, %reg. */ | |
2487 | BFD_ASSERT (rel->r_offset >= 1); | |
2488 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2489 | BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size); | |
37e55690 JJ |
2490 | if (val == 0xa1) |
2491 | { | |
2492 | /* movl foo, %eax. */ | |
55fd94b0 AM |
2493 | bfd_put_8 (output_bfd, 0xb8, |
2494 | contents + rel->r_offset - 1); | |
37e55690 | 2495 | } |
299bf759 | 2496 | else |
37e55690 | 2497 | { |
299bf759 | 2498 | BFD_ASSERT (rel->r_offset >= 2); |
55fd94b0 AM |
2499 | type = bfd_get_8 (input_bfd, |
2500 | contents + rel->r_offset - 2); | |
299bf759 | 2501 | switch (type) |
26e41594 | 2502 | { |
299bf759 L |
2503 | case 0x8b: |
2504 | /* movl */ | |
2505 | BFD_ASSERT ((val & 0xc7) == 0x05); | |
2506 | bfd_put_8 (output_bfd, 0xc7, | |
2507 | contents + rel->r_offset - 2); | |
2508 | bfd_put_8 (output_bfd, | |
2509 | 0xc0 | ((val >> 3) & 7), | |
2510 | contents + rel->r_offset - 1); | |
2511 | break; | |
2512 | case 0x03: | |
2513 | /* addl */ | |
2514 | BFD_ASSERT ((val & 0xc7) == 0x05); | |
2515 | bfd_put_8 (output_bfd, 0x81, | |
2516 | contents + rel->r_offset - 2); | |
2517 | bfd_put_8 (output_bfd, | |
2518 | 0xc0 | ((val >> 3) & 7), | |
2519 | contents + rel->r_offset - 1); | |
2520 | break; | |
2521 | default: | |
2522 | BFD_FAIL (); | |
2523 | break; | |
26e41594 | 2524 | } |
37e55690 | 2525 | } |
37e55690 JJ |
2526 | bfd_put_32 (output_bfd, -tpoff (info, relocation), |
2527 | contents + rel->r_offset); | |
2528 | continue; | |
2529 | } | |
2530 | else | |
2531 | { | |
2532 | unsigned int val, type; | |
2533 | ||
2534 | /* {IE_32,GOTIE}->LE transition: | |
2535 | Originally it can be one of: | |
13ae64f3 | 2536 | subl foo(%reg1), %reg2 |
13ae64f3 | 2537 | movl foo(%reg1), %reg2 |
37e55690 | 2538 | addl foo(%reg1), %reg2 |
13ae64f3 JJ |
2539 | We change it into: |
2540 | subl $foo, %reg2 | |
37e55690 JJ |
2541 | movl $foo, %reg2 (6 byte form) |
2542 | addl $foo, %reg2. */ | |
13ae64f3 JJ |
2543 | BFD_ASSERT (rel->r_offset >= 2); |
2544 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2545 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2546 | BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size); | |
37e55690 | 2547 | BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4); |
13ae64f3 JJ |
2548 | if (type == 0x8b) |
2549 | { | |
2550 | /* movl */ | |
13ae64f3 JJ |
2551 | bfd_put_8 (output_bfd, 0xc7, |
2552 | contents + rel->r_offset - 2); | |
2553 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
2554 | contents + rel->r_offset - 1); | |
2555 | } | |
2556 | else if (type == 0x2b) | |
2557 | { | |
2558 | /* subl */ | |
13ae64f3 JJ |
2559 | bfd_put_8 (output_bfd, 0x81, |
2560 | contents + rel->r_offset - 2); | |
2561 | bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), | |
2562 | contents + rel->r_offset - 1); | |
2563 | } | |
37e55690 JJ |
2564 | else if (type == 0x03) |
2565 | { | |
2566 | /* addl */ | |
2567 | bfd_put_8 (output_bfd, 0x81, | |
2568 | contents + rel->r_offset - 2); | |
2569 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
2570 | contents + rel->r_offset - 1); | |
2571 | } | |
13ae64f3 JJ |
2572 | else |
2573 | BFD_FAIL (); | |
37e55690 JJ |
2574 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE) |
2575 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
2576 | contents + rel->r_offset); | |
2577 | else | |
2578 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
2579 | contents + rel->r_offset); | |
13ae64f3 JJ |
2580 | continue; |
2581 | } | |
2582 | } | |
2583 | ||
2584 | if (htab->sgot == NULL) | |
2585 | abort (); | |
2586 | ||
2587 | if (h != NULL) | |
2588 | off = h->got.offset; | |
2589 | else | |
2590 | { | |
2591 | if (local_got_offsets == NULL) | |
2592 | abort (); | |
2593 | ||
2594 | off = local_got_offsets[r_symndx]; | |
2595 | } | |
2596 | ||
2597 | if ((off & 1) != 0) | |
2598 | off &= ~1; | |
26e41594 | 2599 | else |
13ae64f3 | 2600 | { |
947216bf AM |
2601 | Elf_Internal_Rela outrel; |
2602 | bfd_byte *loc; | |
13ae64f3 JJ |
2603 | int dr_type, indx; |
2604 | ||
2605 | if (htab->srelgot == NULL) | |
2606 | abort (); | |
2607 | ||
2608 | outrel.r_offset = (htab->sgot->output_section->vma | |
2609 | + htab->sgot->output_offset + off); | |
2610 | ||
13ae64f3 JJ |
2611 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
2612 | if (r_type == R_386_TLS_GD) | |
2613 | dr_type = R_386_TLS_DTPMOD32; | |
37e55690 JJ |
2614 | else if (tls_type == GOT_TLS_IE_POS) |
2615 | dr_type = R_386_TLS_TPOFF; | |
13ae64f3 JJ |
2616 | else |
2617 | dr_type = R_386_TLS_TPOFF32; | |
37e55690 JJ |
2618 | if (dr_type == R_386_TLS_TPOFF && indx == 0) |
2619 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
2620 | htab->sgot->contents + off); | |
2621 | else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) | |
c5c1f40c | 2622 | bfd_put_32 (output_bfd, dtpoff_base (info) - relocation, |
c366c25e JJ |
2623 | htab->sgot->contents + off); |
2624 | else | |
2625 | bfd_put_32 (output_bfd, 0, | |
2626 | htab->sgot->contents + off); | |
13ae64f3 | 2627 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
947216bf AM |
2628 | loc = htab->srelgot->contents; |
2629 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2630 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2631 | ||
2632 | if (r_type == R_386_TLS_GD) | |
2633 | { | |
2634 | if (indx == 0) | |
2635 | { | |
82e51918 | 2636 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
2637 | bfd_put_32 (output_bfd, |
2638 | relocation - dtpoff_base (info), | |
2639 | htab->sgot->contents + off + 4); | |
2640 | } | |
2641 | else | |
2642 | { | |
2643 | bfd_put_32 (output_bfd, 0, | |
2644 | htab->sgot->contents + off + 4); | |
2645 | outrel.r_info = ELF32_R_INFO (indx, | |
2646 | R_386_TLS_DTPOFF32); | |
2647 | outrel.r_offset += 4; | |
2648 | htab->srelgot->reloc_count++; | |
947216bf AM |
2649 | loc += sizeof (Elf32_External_Rel); |
2650 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
13ae64f3 JJ |
2651 | } |
2652 | } | |
37e55690 JJ |
2653 | else if (tls_type == GOT_TLS_IE_BOTH) |
2654 | { | |
2655 | bfd_put_32 (output_bfd, | |
2656 | indx == 0 ? relocation - dtpoff_base (info) : 0, | |
2657 | htab->sgot->contents + off + 4); | |
2658 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
2659 | outrel.r_offset += 4; | |
2660 | htab->srelgot->reloc_count++; | |
947216bf | 2661 | loc += sizeof (Elf32_External_Rel); |
37e55690 JJ |
2662 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2663 | } | |
13ae64f3 JJ |
2664 | |
2665 | if (h != NULL) | |
2666 | h->got.offset |= 1; | |
2667 | else | |
2668 | local_got_offsets[r_symndx] |= 1; | |
2669 | } | |
2670 | ||
2671 | if (off >= (bfd_vma) -2) | |
2672 | abort (); | |
2673 | if (r_type == ELF32_R_TYPE (rel->r_info)) | |
2674 | { | |
2675 | relocation = htab->sgot->output_offset + off; | |
37e55690 JJ |
2676 | if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) |
2677 | && tls_type == GOT_TLS_IE_BOTH) | |
2678 | relocation += 4; | |
2679 | if (r_type == R_386_TLS_IE) | |
2680 | relocation += htab->sgot->output_section->vma; | |
b34976b6 | 2681 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
2682 | } |
2683 | else | |
2684 | { | |
2685 | unsigned int val, type; | |
2686 | bfd_vma roff; | |
2687 | ||
2688 | /* GD->IE transition. */ | |
2689 | BFD_ASSERT (rel->r_offset >= 2); | |
2690 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2691 | BFD_ASSERT (type == 0x8d || type == 0x04); | |
2692 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2693 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) | |
2694 | == 0xe8); | |
2695 | BFD_ASSERT (rel + 1 < relend); | |
2696 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2697 | roff = rel->r_offset - 3; | |
2698 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2699 | if (type == 0x04) | |
2700 | { | |
2701 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
2702 | Change it into: | |
2703 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
2704 | BFD_ASSERT (rel->r_offset >= 3); | |
2705 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2706 | contents + rel->r_offset - 3) | |
2707 | == 0x8d); | |
2708 | BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3)); | |
2709 | val >>= 3; | |
2710 | } | |
2711 | else | |
2712 | { | |
2713 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
2714 | Change it into: | |
2715 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
2716 | BFD_ASSERT (rel->r_offset + 10 <= input_section->_raw_size); | |
2717 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2718 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2719 | contents + rel->r_offset + 9) | |
2720 | == 0x90); | |
2721 | roff = rel->r_offset - 2; | |
2722 | } | |
2723 | memcpy (contents + roff, | |
2724 | "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); | |
2725 | contents[roff + 7] = 0x80 | (val & 7); | |
37e55690 JJ |
2726 | /* If foo is used only with foo@gotntpoff(%reg) and |
2727 | foo@indntpoff, but not with foo@gottpoff(%reg), change | |
2728 | subl $foo@gottpoff(%reg), %eax | |
2729 | into: | |
2730 | addl $foo@gotntpoff(%reg), %eax. */ | |
2731 | if (r_type == R_386_TLS_GOTIE) | |
2732 | { | |
2733 | contents[roff + 6] = 0x03; | |
2734 | if (tls_type == GOT_TLS_IE_BOTH) | |
2735 | off += 4; | |
2736 | } | |
13ae64f3 JJ |
2737 | bfd_put_32 (output_bfd, htab->sgot->output_offset + off, |
2738 | contents + roff + 8); | |
2739 | /* Skip R_386_PLT32. */ | |
2740 | rel++; | |
2741 | continue; | |
2742 | } | |
2743 | break; | |
2744 | ||
2745 | case R_386_TLS_LDM: | |
2746 | if (! info->shared) | |
2747 | { | |
2748 | unsigned int val; | |
2749 | ||
2750 | /* LD->LE transition: | |
2751 | Ensure it is: | |
2752 | leal foo(%reg), %eax; call ___tls_get_addr. | |
2753 | We change it into: | |
2754 | movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */ | |
2755 | BFD_ASSERT (rel->r_offset >= 2); | |
2756 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2) | |
2757 | == 0x8d); | |
2758 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2759 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2760 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2761 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) | |
2762 | == 0xe8); | |
2763 | BFD_ASSERT (rel + 1 < relend); | |
2764 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2765 | memcpy (contents + rel->r_offset - 2, | |
2766 | "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); | |
2767 | /* Skip R_386_PLT32. */ | |
2768 | rel++; | |
2769 | continue; | |
2770 | } | |
2771 | ||
2772 | if (htab->sgot == NULL) | |
2773 | abort (); | |
2774 | ||
2775 | off = htab->tls_ldm_got.offset; | |
2776 | if (off & 1) | |
2777 | off &= ~1; | |
2778 | else | |
2779 | { | |
947216bf AM |
2780 | Elf_Internal_Rela outrel; |
2781 | bfd_byte *loc; | |
13ae64f3 JJ |
2782 | |
2783 | if (htab->srelgot == NULL) | |
2784 | abort (); | |
2785 | ||
2786 | outrel.r_offset = (htab->sgot->output_section->vma | |
2787 | + htab->sgot->output_offset + off); | |
2788 | ||
2789 | bfd_put_32 (output_bfd, 0, | |
2790 | htab->sgot->contents + off); | |
2791 | bfd_put_32 (output_bfd, 0, | |
2792 | htab->sgot->contents + off + 4); | |
2793 | outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); | |
947216bf AM |
2794 | loc = htab->srelgot->contents; |
2795 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2796 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2797 | htab->tls_ldm_got.offset |= 1; | |
2798 | } | |
2799 | relocation = htab->sgot->output_offset + off; | |
b34976b6 | 2800 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
2801 | break; |
2802 | ||
2803 | case R_386_TLS_LDO_32: | |
a45bb67d | 2804 | if (info->shared || (input_section->flags & SEC_CODE) == 0) |
13ae64f3 JJ |
2805 | relocation -= dtpoff_base (info); |
2806 | else | |
2807 | /* When converting LDO to LE, we must negate. */ | |
2808 | relocation = -tpoff (info, relocation); | |
2809 | break; | |
2810 | ||
2811 | case R_386_TLS_LE_32: | |
13ae64f3 | 2812 | case R_386_TLS_LE: |
37e55690 JJ |
2813 | if (info->shared) |
2814 | { | |
947216bf | 2815 | Elf_Internal_Rela outrel; |
37e55690 | 2816 | asection *sreloc; |
947216bf | 2817 | bfd_byte *loc; |
37e55690 JJ |
2818 | int indx; |
2819 | ||
2820 | outrel.r_offset = rel->r_offset | |
2821 | + input_section->output_section->vma | |
2822 | + input_section->output_offset; | |
2823 | if (h != NULL && h->dynindx != -1) | |
2824 | indx = h->dynindx; | |
2825 | else | |
2826 | indx = 0; | |
2827 | if (r_type == R_386_TLS_LE_32) | |
2828 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); | |
2829 | else | |
2830 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
2831 | sreloc = elf_section_data (input_section)->sreloc; | |
2832 | if (sreloc == NULL) | |
2833 | abort (); | |
947216bf AM |
2834 | loc = sreloc->contents; |
2835 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
2836 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2837 | if (indx) | |
2838 | continue; | |
2839 | else if (r_type == R_386_TLS_LE_32) | |
2840 | relocation = dtpoff_base (info) - relocation; | |
2841 | else | |
2842 | relocation -= dtpoff_base (info); | |
2843 | } | |
2844 | else if (r_type == R_386_TLS_LE_32) | |
2845 | relocation = tpoff (info, relocation); | |
2846 | else | |
2847 | relocation = -tpoff (info, relocation); | |
13ae64f3 JJ |
2848 | break; |
2849 | ||
252b5132 RH |
2850 | default: |
2851 | break; | |
2852 | } | |
2853 | ||
239e1f3a AM |
2854 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
2855 | because such sections are not SEC_ALLOC and thus ld.so will | |
2856 | not process them. */ | |
8c694914 | 2857 | if (unresolved_reloc |
239e1f3a | 2858 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
8c694914 | 2859 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) |
6a30718d JJ |
2860 | { |
2861 | (*_bfd_error_handler) | |
2862 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), | |
2863 | bfd_archive_filename (input_bfd), | |
2864 | bfd_get_section_name (input_bfd, input_section), | |
2865 | (long) rel->r_offset, | |
2866 | h->root.root.string); | |
b34976b6 | 2867 | return FALSE; |
6a30718d | 2868 | } |
83be169b | 2869 | |
252b5132 RH |
2870 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
2871 | contents, rel->r_offset, | |
55fd94b0 | 2872 | relocation, 0); |
252b5132 | 2873 | |
cf5c0c5b | 2874 | if (r != bfd_reloc_ok) |
252b5132 | 2875 | { |
cf5c0c5b | 2876 | const char *name; |
ffb2e45b | 2877 | |
cf5c0c5b AM |
2878 | if (h != NULL) |
2879 | name = h->root.root.string; | |
2880 | else | |
2881 | { | |
2882 | name = bfd_elf_string_from_elf_section (input_bfd, | |
2883 | symtab_hdr->sh_link, | |
2884 | sym->st_name); | |
2885 | if (name == NULL) | |
b34976b6 | 2886 | return FALSE; |
cf5c0c5b AM |
2887 | if (*name == '\0') |
2888 | name = bfd_section_name (input_bfd, sec); | |
2889 | } | |
ffb2e45b | 2890 | |
cf5c0c5b AM |
2891 | if (r == bfd_reloc_overflow) |
2892 | { | |
cf5c0c5b | 2893 | if (! ((*info->callbacks->reloc_overflow) |
55fd94b0 | 2894 | (info, name, howto->name, 0, |
cf5c0c5b | 2895 | input_bfd, input_section, rel->r_offset))) |
b34976b6 | 2896 | return FALSE; |
cf5c0c5b AM |
2897 | } |
2898 | else | |
2899 | { | |
2900 | (*_bfd_error_handler) | |
2901 | (_("%s(%s+0x%lx): reloc against `%s': error %d"), | |
2902 | bfd_archive_filename (input_bfd), | |
2903 | bfd_get_section_name (input_bfd, input_section), | |
2904 | (long) rel->r_offset, name, (int) r); | |
b34976b6 | 2905 | return FALSE; |
cf5c0c5b | 2906 | } |
252b5132 RH |
2907 | } |
2908 | } | |
2909 | ||
b34976b6 | 2910 | return TRUE; |
252b5132 RH |
2911 | } |
2912 | ||
2913 | /* Finish up dynamic symbol handling. We set the contents of various | |
2914 | dynamic sections here. */ | |
2915 | ||
b34976b6 | 2916 | static bfd_boolean |
55fd94b0 AM |
2917 | elf_i386_finish_dynamic_symbol (bfd *output_bfd, |
2918 | struct bfd_link_info *info, | |
2919 | struct elf_link_hash_entry *h, | |
2920 | Elf_Internal_Sym *sym) | |
252b5132 | 2921 | { |
6725bdbf | 2922 | struct elf_i386_link_hash_table *htab; |
252b5132 | 2923 | |
6725bdbf | 2924 | htab = elf_i386_hash_table (info); |
252b5132 RH |
2925 | |
2926 | if (h->plt.offset != (bfd_vma) -1) | |
2927 | { | |
252b5132 RH |
2928 | bfd_vma plt_index; |
2929 | bfd_vma got_offset; | |
947216bf AM |
2930 | Elf_Internal_Rela rel; |
2931 | bfd_byte *loc; | |
252b5132 RH |
2932 | |
2933 | /* This symbol has an entry in the procedure linkage table. Set | |
2934 | it up. */ | |
2935 | ||
ffb2e45b AM |
2936 | if (h->dynindx == -1 |
2937 | || htab->splt == NULL | |
2938 | || htab->sgotplt == NULL | |
2939 | || htab->srelplt == NULL) | |
2940 | abort (); | |
252b5132 RH |
2941 | |
2942 | /* Get the index in the procedure linkage table which | |
2943 | corresponds to this symbol. This is the index of this symbol | |
2944 | in all the symbols for which we are making plt entries. The | |
2945 | first entry in the procedure linkage table is reserved. */ | |
2946 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
2947 | ||
2948 | /* Get the offset into the .got table of the entry that | |
2949 | corresponds to this function. Each .got entry is 4 bytes. | |
2950 | The first three are reserved. */ | |
2951 | got_offset = (plt_index + 3) * 4; | |
2952 | ||
2953 | /* Fill in the entry in the procedure linkage table. */ | |
2954 | if (! info->shared) | |
2955 | { | |
6725bdbf | 2956 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry, |
252b5132 RH |
2957 | PLT_ENTRY_SIZE); |
2958 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
2959 | (htab->sgotplt->output_section->vma |
2960 | + htab->sgotplt->output_offset | |
252b5132 | 2961 | + got_offset), |
6725bdbf | 2962 | htab->splt->contents + h->plt.offset + 2); |
252b5132 RH |
2963 | } |
2964 | else | |
2965 | { | |
6725bdbf | 2966 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry, |
252b5132 RH |
2967 | PLT_ENTRY_SIZE); |
2968 | bfd_put_32 (output_bfd, got_offset, | |
6725bdbf | 2969 | htab->splt->contents + h->plt.offset + 2); |
252b5132 RH |
2970 | } |
2971 | ||
2972 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel), | |
6725bdbf | 2973 | htab->splt->contents + h->plt.offset + 7); |
252b5132 | 2974 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), |
6725bdbf | 2975 | htab->splt->contents + h->plt.offset + 12); |
252b5132 RH |
2976 | |
2977 | /* Fill in the entry in the global offset table. */ | |
2978 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
2979 | (htab->splt->output_section->vma |
2980 | + htab->splt->output_offset | |
252b5132 RH |
2981 | + h->plt.offset |
2982 | + 6), | |
6725bdbf | 2983 | htab->sgotplt->contents + got_offset); |
252b5132 RH |
2984 | |
2985 | /* Fill in the entry in the .rel.plt section. */ | |
6725bdbf AM |
2986 | rel.r_offset = (htab->sgotplt->output_section->vma |
2987 | + htab->sgotplt->output_offset | |
252b5132 RH |
2988 | + got_offset); |
2989 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); | |
947216bf | 2990 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel); |
0ac8d2ca | 2991 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
2992 | |
2993 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
2994 | { | |
2995 | /* Mark the symbol as undefined, rather than as defined in | |
c6585bbb JJ |
2996 | the .plt section. Leave the value if there were any |
2997 | relocations where pointer equality matters (this is a clue | |
51b64d56 AM |
2998 | for the dynamic linker, to make function pointer |
2999 | comparisons work between an application and shared | |
c6585bbb JJ |
3000 | library), otherwise set it to zero. If a function is only |
3001 | called from a binary, there is no need to slow down | |
3002 | shared libraries because of that. */ | |
252b5132 | 3003 | sym->st_shndx = SHN_UNDEF; |
c6585bbb JJ |
3004 | if ((h->elf_link_hash_flags & ELF_LINK_POINTER_EQUALITY_NEEDED) == 0) |
3005 | sym->st_value = 0; | |
252b5132 RH |
3006 | } |
3007 | } | |
3008 | ||
13ae64f3 JJ |
3009 | if (h->got.offset != (bfd_vma) -1 |
3010 | && elf_i386_hash_entry(h)->tls_type != GOT_TLS_GD | |
37e55690 | 3011 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0) |
252b5132 | 3012 | { |
947216bf AM |
3013 | Elf_Internal_Rela rel; |
3014 | bfd_byte *loc; | |
252b5132 RH |
3015 | |
3016 | /* This symbol has an entry in the global offset table. Set it | |
3017 | up. */ | |
3018 | ||
ffb2e45b AM |
3019 | if (htab->sgot == NULL || htab->srelgot == NULL) |
3020 | abort (); | |
252b5132 | 3021 | |
6725bdbf AM |
3022 | rel.r_offset = (htab->sgot->output_section->vma |
3023 | + htab->sgot->output_offset | |
dc810e39 | 3024 | + (h->got.offset & ~(bfd_vma) 1)); |
252b5132 | 3025 | |
dd5724d5 AM |
3026 | /* If this is a static link, or it is a -Bsymbolic link and the |
3027 | symbol is defined locally or was forced to be local because | |
3028 | of a version file, we just want to emit a RELATIVE reloc. | |
252b5132 RH |
3029 | The entry in the global offset table will already have been |
3030 | initialized in the relocate_section function. */ | |
6725bdbf | 3031 | if (info->shared |
586119b3 | 3032 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
dd5724d5 | 3033 | { |
6725bdbf | 3034 | BFD_ASSERT((h->got.offset & 1) != 0); |
dd5724d5 AM |
3035 | rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
3036 | } | |
252b5132 RH |
3037 | else |
3038 | { | |
dd5724d5 | 3039 | BFD_ASSERT((h->got.offset & 1) == 0); |
6725bdbf AM |
3040 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
3041 | htab->sgot->contents + h->got.offset); | |
252b5132 RH |
3042 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); |
3043 | } | |
3044 | ||
947216bf AM |
3045 | loc = htab->srelgot->contents; |
3046 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3047 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3048 | } |
3049 | ||
791987af | 3050 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
252b5132 | 3051 | { |
947216bf AM |
3052 | Elf_Internal_Rela rel; |
3053 | bfd_byte *loc; | |
252b5132 RH |
3054 | |
3055 | /* This symbol needs a copy reloc. Set it up. */ | |
3056 | ||
ffb2e45b AM |
3057 | if (h->dynindx == -1 |
3058 | || (h->root.type != bfd_link_hash_defined | |
3059 | && h->root.type != bfd_link_hash_defweak) | |
3060 | || htab->srelbss == NULL) | |
3061 | abort (); | |
252b5132 RH |
3062 | |
3063 | rel.r_offset = (h->root.u.def.value | |
3064 | + h->root.u.def.section->output_section->vma | |
3065 | + h->root.u.def.section->output_offset); | |
3066 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); | |
947216bf AM |
3067 | loc = htab->srelbss->contents; |
3068 | loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3069 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3070 | } |
3071 | ||
3072 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
3073 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
3074 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
3075 | sym->st_shndx = SHN_ABS; | |
3076 | ||
b34976b6 | 3077 | return TRUE; |
252b5132 RH |
3078 | } |
3079 | ||
38701953 AM |
3080 | /* Used to decide how to sort relocs in an optimal manner for the |
3081 | dynamic linker, before writing them out. */ | |
3082 | ||
3083 | static enum elf_reloc_type_class | |
55fd94b0 | 3084 | elf_i386_reloc_type_class (const Elf_Internal_Rela *rela) |
38701953 | 3085 | { |
55fd94b0 | 3086 | switch (ELF32_R_TYPE (rela->r_info)) |
38701953 AM |
3087 | { |
3088 | case R_386_RELATIVE: | |
3089 | return reloc_class_relative; | |
3090 | case R_386_JUMP_SLOT: | |
3091 | return reloc_class_plt; | |
3092 | case R_386_COPY: | |
3093 | return reloc_class_copy; | |
3094 | default: | |
3095 | return reloc_class_normal; | |
3096 | } | |
3097 | } | |
3098 | ||
252b5132 RH |
3099 | /* Finish up the dynamic sections. */ |
3100 | ||
b34976b6 | 3101 | static bfd_boolean |
55fd94b0 AM |
3102 | elf_i386_finish_dynamic_sections (bfd *output_bfd, |
3103 | struct bfd_link_info *info) | |
252b5132 | 3104 | { |
6725bdbf | 3105 | struct elf_i386_link_hash_table *htab; |
252b5132 | 3106 | bfd *dynobj; |
252b5132 RH |
3107 | asection *sdyn; |
3108 | ||
6725bdbf | 3109 | htab = elf_i386_hash_table (info); |
ebe50bae | 3110 | dynobj = htab->elf.dynobj; |
252b5132 RH |
3111 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
3112 | ||
ebe50bae | 3113 | if (htab->elf.dynamic_sections_created) |
252b5132 | 3114 | { |
252b5132 RH |
3115 | Elf32_External_Dyn *dyncon, *dynconend; |
3116 | ||
ffb2e45b AM |
3117 | if (sdyn == NULL || htab->sgot == NULL) |
3118 | abort (); | |
252b5132 RH |
3119 | |
3120 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
3121 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
3122 | for (; dyncon < dynconend; dyncon++) | |
3123 | { | |
3124 | Elf_Internal_Dyn dyn; | |
51b64d56 | 3125 | asection *s; |
252b5132 RH |
3126 | |
3127 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
3128 | ||
3129 | switch (dyn.d_tag) | |
3130 | { | |
3131 | default: | |
0ac8d2ca | 3132 | continue; |
252b5132 RH |
3133 | |
3134 | case DT_PLTGOT: | |
6725bdbf | 3135 | dyn.d_un.d_ptr = htab->sgot->output_section->vma; |
6725bdbf AM |
3136 | break; |
3137 | ||
252b5132 | 3138 | case DT_JMPREL: |
6348e046 AM |
3139 | s = htab->srelplt; |
3140 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
252b5132 RH |
3141 | break; |
3142 | ||
3143 | case DT_PLTRELSZ: | |
6348e046 AM |
3144 | s = htab->srelplt; |
3145 | dyn.d_un.d_val = s->_raw_size; | |
252b5132 RH |
3146 | break; |
3147 | ||
3148 | case DT_RELSZ: | |
3149 | /* My reading of the SVR4 ABI indicates that the | |
3150 | procedure linkage table relocs (DT_JMPREL) should be | |
3151 | included in the overall relocs (DT_REL). This is | |
3152 | what Solaris does. However, UnixWare can not handle | |
3153 | that case. Therefore, we override the DT_RELSZ entry | |
6348e046 AM |
3154 | here to make it not include the JMPREL relocs. */ |
3155 | s = htab->srelplt; | |
3156 | if (s == NULL) | |
3157 | continue; | |
3158 | dyn.d_un.d_val -= s->_raw_size; | |
3159 | break; | |
3160 | ||
3161 | case DT_REL: | |
3162 | /* We may not be using the standard ELF linker script. | |
3163 | If .rel.plt is the first .rel section, we adjust | |
3164 | DT_REL to not include it. */ | |
3165 | s = htab->srelplt; | |
3166 | if (s == NULL) | |
3167 | continue; | |
3168 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
3169 | continue; | |
3170 | dyn.d_un.d_ptr += s->_raw_size; | |
252b5132 RH |
3171 | break; |
3172 | } | |
0ac8d2ca AM |
3173 | |
3174 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
3175 | } |
3176 | ||
3177 | /* Fill in the first entry in the procedure linkage table. */ | |
6725bdbf | 3178 | if (htab->splt && htab->splt->_raw_size > 0) |
252b5132 RH |
3179 | { |
3180 | if (info->shared) | |
6725bdbf AM |
3181 | memcpy (htab->splt->contents, |
3182 | elf_i386_pic_plt0_entry, PLT_ENTRY_SIZE); | |
252b5132 RH |
3183 | else |
3184 | { | |
6725bdbf AM |
3185 | memcpy (htab->splt->contents, |
3186 | elf_i386_plt0_entry, PLT_ENTRY_SIZE); | |
252b5132 | 3187 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3188 | (htab->sgotplt->output_section->vma |
3189 | + htab->sgotplt->output_offset | |
3190 | + 4), | |
3191 | htab->splt->contents + 2); | |
252b5132 | 3192 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3193 | (htab->sgotplt->output_section->vma |
3194 | + htab->sgotplt->output_offset | |
3195 | + 8), | |
3196 | htab->splt->contents + 8); | |
252b5132 RH |
3197 | } |
3198 | ||
3199 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
3200 | really seem like the right value. */ | |
6725bdbf AM |
3201 | elf_section_data (htab->splt->output_section) |
3202 | ->this_hdr.sh_entsize = 4; | |
252b5132 RH |
3203 | } |
3204 | } | |
3205 | ||
12d0ee4a | 3206 | if (htab->sgotplt) |
252b5132 | 3207 | { |
12d0ee4a AM |
3208 | /* Fill in the first three entries in the global offset table. */ |
3209 | if (htab->sgotplt->_raw_size > 0) | |
3210 | { | |
3211 | bfd_put_32 (output_bfd, | |
55fd94b0 | 3212 | (sdyn == NULL ? 0 |
12d0ee4a AM |
3213 | : sdyn->output_section->vma + sdyn->output_offset), |
3214 | htab->sgotplt->contents); | |
55fd94b0 AM |
3215 | bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 4); |
3216 | bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 8); | |
12d0ee4a | 3217 | } |
252b5132 | 3218 | |
12d0ee4a AM |
3219 | elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4; |
3220 | } | |
b34976b6 | 3221 | return TRUE; |
252b5132 RH |
3222 | } |
3223 | ||
3224 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vec | |
3225 | #define TARGET_LITTLE_NAME "elf32-i386" | |
3226 | #define ELF_ARCH bfd_arch_i386 | |
3227 | #define ELF_MACHINE_CODE EM_386 | |
3228 | #define ELF_MAXPAGESIZE 0x1000 | |
252b5132 RH |
3229 | |
3230 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3231 | #define elf_backend_can_refcount 1 |
252b5132 RH |
3232 | #define elf_backend_want_got_plt 1 |
3233 | #define elf_backend_plt_readonly 1 | |
3234 | #define elf_backend_want_plt_sym 0 | |
3235 | #define elf_backend_got_header_size 12 | |
252b5132 | 3236 | |
8c29f035 AM |
3237 | /* Support RELA for objdump of prelink objects. */ |
3238 | #define elf_info_to_howto elf_i386_info_to_howto_rel | |
dd5724d5 AM |
3239 | #define elf_info_to_howto_rel elf_i386_info_to_howto_rel |
3240 | ||
13ae64f3 | 3241 | #define bfd_elf32_mkobject elf_i386_mkobject |
13ae64f3 | 3242 | |
dd5724d5 AM |
3243 | #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name |
3244 | #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create | |
3245 | #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup | |
3246 | ||
3247 | #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol | |
3248 | #define elf_backend_check_relocs elf_i386_check_relocs | |
0ac8d2ca | 3249 | #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol |
6725bdbf | 3250 | #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections |
0ac8d2ca | 3251 | #define elf_backend_fake_sections elf_i386_fake_sections |
dd5724d5 AM |
3252 | #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections |
3253 | #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol | |
3254 | #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook | |
3255 | #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook | |
c5fccbec DJ |
3256 | #define elf_backend_grok_prstatus elf_i386_grok_prstatus |
3257 | #define elf_backend_grok_psinfo elf_i386_grok_psinfo | |
db6751f2 | 3258 | #define elf_backend_reloc_type_class elf_i386_reloc_type_class |
0ac8d2ca AM |
3259 | #define elf_backend_relocate_section elf_i386_relocate_section |
3260 | #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections | |
dd5724d5 | 3261 | |
252b5132 | 3262 | #include "elf32-target.h" |
2bc3c89a AM |
3263 | |
3264 | /* FreeBSD support. */ | |
3265 | ||
3266 | #undef TARGET_LITTLE_SYM | |
3267 | #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec | |
3268 | #undef TARGET_LITTLE_NAME | |
3269 | #define TARGET_LITTLE_NAME "elf32-i386-freebsd" | |
3270 | ||
3271 | /* The kernel recognizes executables as valid only if they carry a | |
3272 | "FreeBSD" label in the ELF header. So we put this label on all | |
3273 | executables and (for simplicity) also all other object files. */ | |
3274 | ||
2bc3c89a | 3275 | static void |
55fd94b0 AM |
3276 | elf_i386_post_process_headers (bfd *abfd, |
3277 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
2bc3c89a AM |
3278 | { |
3279 | Elf_Internal_Ehdr *i_ehdrp; | |
3280 | ||
3281 | i_ehdrp = elf_elfheader (abfd); | |
3282 | ||
3283 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
3284 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; | |
3285 | #ifdef OLD_FREEBSD_ABI_LABEL | |
3286 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
3287 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
caf47ea6 | 3288 | #endif |
2bc3c89a AM |
3289 | } |
3290 | ||
3291 | #undef elf_backend_post_process_headers | |
571fe01f NC |
3292 | #define elf_backend_post_process_headers elf_i386_post_process_headers |
3293 | #undef elf32_bed | |
3294 | #define elf32_bed elf32_i386_fbsd_bed | |
2bc3c89a AM |
3295 | |
3296 | #include "elf32-target.h" |