Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Intel 80386/80486-specific support for 32-bit ELF |
61adc1a4 | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 |
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. */ |
61adc1a4 | 349 | |
b34976b6 | 350 | static bfd_boolean |
55fd94b0 | 351 | elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
38701953 AM |
352 | { |
353 | int offset; | |
354 | size_t raw_size; | |
355 | ||
61adc1a4 | 356 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 357 | { |
61adc1a4 NC |
358 | int pr_version = bfd_get_32 (abfd, note->descdata); |
359 | ||
360 | if (pr_version != 1) | |
361 | return FALSE; | |
362 | ||
363 | /* pr_cursig */ | |
364 | elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20); | |
365 | ||
366 | /* pr_pid */ | |
367 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
368 | ||
369 | /* pr_reg */ | |
370 | offset = 28; | |
371 | raw_size = bfd_get_32 (abfd, note->descdata + 8); | |
372 | } | |
373 | else | |
374 | { | |
375 | switch (note->descsz) | |
376 | { | |
377 | default: | |
378 | return FALSE; | |
38701953 | 379 | |
61adc1a4 NC |
380 | case 144: /* Linux/i386 */ |
381 | /* pr_cursig */ | |
382 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
38701953 | 383 | |
61adc1a4 NC |
384 | /* pr_pid */ |
385 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
38701953 | 386 | |
61adc1a4 NC |
387 | /* pr_reg */ |
388 | offset = 72; | |
389 | raw_size = 68; | |
38701953 | 390 | |
61adc1a4 NC |
391 | break; |
392 | } | |
38701953 AM |
393 | } |
394 | ||
395 | /* Make a ".reg/999" section. */ | |
396 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
397 | raw_size, note->descpos + offset); | |
398 | } | |
399 | ||
b34976b6 | 400 | static bfd_boolean |
55fd94b0 | 401 | elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
38701953 | 402 | { |
61adc1a4 | 403 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 404 | { |
61adc1a4 NC |
405 | int pr_version = bfd_get_32 (abfd, note->descdata); |
406 | ||
407 | if (pr_version != 1) | |
b34976b6 | 408 | return FALSE; |
38701953 | 409 | |
61adc1a4 NC |
410 | elf_tdata (abfd)->core_program |
411 | = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17); | |
412 | elf_tdata (abfd)->core_command | |
413 | = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81); | |
414 | } | |
415 | else | |
416 | { | |
417 | switch (note->descsz) | |
418 | { | |
419 | default: | |
420 | return FALSE; | |
421 | ||
422 | case 124: /* Linux/i386 elf_prpsinfo. */ | |
423 | elf_tdata (abfd)->core_program | |
424 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
425 | elf_tdata (abfd)->core_command | |
426 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
427 | } | |
38701953 AM |
428 | } |
429 | ||
430 | /* Note that for some reason, a spurious space is tacked | |
431 | onto the end of the args in some (at least one anyway) | |
432 | implementations, so strip it off if it exists. */ | |
38701953 AM |
433 | { |
434 | char *command = elf_tdata (abfd)->core_command; | |
435 | int n = strlen (command); | |
436 | ||
437 | if (0 < n && command[n - 1] == ' ') | |
438 | command[n - 1] = '\0'; | |
439 | } | |
440 | ||
b34976b6 | 441 | return TRUE; |
38701953 AM |
442 | } |
443 | \f | |
444 | /* Functions for the i386 ELF linker. | |
445 | ||
446 | In order to gain some understanding of code in this file without | |
447 | knowing all the intricate details of the linker, note the | |
448 | following: | |
449 | ||
450 | Functions named elf_i386_* are called by external routines, other | |
451 | functions are only called locally. elf_i386_* functions appear | |
452 | in this file more or less in the order in which they are called | |
453 | from external routines. eg. elf_i386_check_relocs is called | |
454 | early in the link process, elf_i386_finish_dynamic_sections is | |
455 | one of the last functions. */ | |
456 | ||
252b5132 RH |
457 | |
458 | /* The name of the dynamic interpreter. This is put in the .interp | |
459 | section. */ | |
460 | ||
461 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
462 | ||
a23b6845 AM |
463 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
464 | copying dynamic variables from a shared lib into an app's dynbss | |
465 | section, and instead use a dynamic relocation to point into the | |
466 | shared lib. */ | |
467 | #define ELIMINATE_COPY_RELOCS 1 | |
468 | ||
252b5132 RH |
469 | /* The size in bytes of an entry in the procedure linkage table. */ |
470 | ||
471 | #define PLT_ENTRY_SIZE 16 | |
472 | ||
473 | /* The first entry in an absolute procedure linkage table looks like | |
474 | this. See the SVR4 ABI i386 supplement to see how this works. */ | |
475 | ||
476 | static const bfd_byte elf_i386_plt0_entry[PLT_ENTRY_SIZE] = | |
477 | { | |
478 | 0xff, 0x35, /* pushl contents of address */ | |
479 | 0, 0, 0, 0, /* replaced with address of .got + 4. */ | |
480 | 0xff, 0x25, /* jmp indirect */ | |
481 | 0, 0, 0, 0, /* replaced with address of .got + 8. */ | |
482 | 0, 0, 0, 0 /* pad out to 16 bytes. */ | |
483 | }; | |
484 | ||
485 | /* Subsequent entries in an absolute procedure linkage table look like | |
486 | this. */ | |
487 | ||
488 | static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] = | |
489 | { | |
490 | 0xff, 0x25, /* jmp indirect */ | |
491 | 0, 0, 0, 0, /* replaced with address of this symbol in .got. */ | |
492 | 0x68, /* pushl immediate */ | |
493 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
494 | 0xe9, /* jmp relative */ | |
495 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
496 | }; | |
497 | ||
498 | /* The first entry in a PIC procedure linkage table look like this. */ | |
499 | ||
500 | static const bfd_byte elf_i386_pic_plt0_entry[PLT_ENTRY_SIZE] = | |
501 | { | |
502 | 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */ | |
503 | 0xff, 0xa3, 8, 0, 0, 0, /* jmp *8(%ebx) */ | |
504 | 0, 0, 0, 0 /* pad out to 16 bytes. */ | |
505 | }; | |
506 | ||
507 | /* Subsequent entries in a PIC procedure linkage table look like this. */ | |
508 | ||
509 | static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] = | |
510 | { | |
511 | 0xff, 0xa3, /* jmp *offset(%ebx) */ | |
512 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
513 | 0x68, /* pushl immediate */ | |
514 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
515 | 0xe9, /* jmp relative */ | |
516 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
517 | }; | |
518 | ||
519 | /* The i386 linker needs to keep track of the number of relocs that it | |
ffb2e45b AM |
520 | decides to copy as dynamic relocs in check_relocs for each symbol. |
521 | This is so that it can later discard them if they are found to be | |
522 | unnecessary. We store the information in a field extending the | |
523 | regular ELF linker hash table. */ | |
252b5132 | 524 | |
ffb2e45b | 525 | struct elf_i386_dyn_relocs |
252b5132 | 526 | { |
ffb2e45b | 527 | struct elf_i386_dyn_relocs *next; |
0c715baa AM |
528 | |
529 | /* The input section of the reloc. */ | |
530 | asection *sec; | |
531 | ||
532 | /* Total number of relocs copied for the input section. */ | |
252b5132 | 533 | bfd_size_type count; |
0c715baa AM |
534 | |
535 | /* Number of pc-relative relocs copied for the input section. */ | |
536 | bfd_size_type pc_count; | |
252b5132 RH |
537 | }; |
538 | ||
539 | /* i386 ELF linker hash entry. */ | |
540 | ||
541 | struct elf_i386_link_hash_entry | |
542 | { | |
ebe50bae | 543 | struct elf_link_hash_entry elf; |
252b5132 | 544 | |
0c715baa | 545 | /* Track dynamic relocs copied for this symbol. */ |
ffb2e45b | 546 | struct elf_i386_dyn_relocs *dyn_relocs; |
13ae64f3 | 547 | |
37e55690 JJ |
548 | #define GOT_UNKNOWN 0 |
549 | #define GOT_NORMAL 1 | |
550 | #define GOT_TLS_GD 2 | |
551 | #define GOT_TLS_IE 4 | |
552 | #define GOT_TLS_IE_POS 5 | |
553 | #define GOT_TLS_IE_NEG 6 | |
554 | #define GOT_TLS_IE_BOTH 7 | |
555 | unsigned char tls_type; | |
13ae64f3 JJ |
556 | }; |
557 | ||
558 | #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent)) | |
559 | ||
560 | struct elf_i386_obj_tdata | |
561 | { | |
562 | struct elf_obj_tdata root; | |
563 | ||
564 | /* tls_type for each local got entry. */ | |
565 | char *local_got_tls_type; | |
252b5132 RH |
566 | }; |
567 | ||
13ae64f3 JJ |
568 | #define elf_i386_tdata(abfd) \ |
569 | ((struct elf_i386_obj_tdata *) (abfd)->tdata.any) | |
570 | ||
571 | #define elf_i386_local_got_tls_type(abfd) \ | |
572 | (elf_i386_tdata (abfd)->local_got_tls_type) | |
573 | ||
b34976b6 | 574 | static bfd_boolean |
55fd94b0 | 575 | elf_i386_mkobject (bfd *abfd) |
13ae64f3 JJ |
576 | { |
577 | bfd_size_type amt = sizeof (struct elf_i386_obj_tdata); | |
578 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
579 | if (abfd->tdata.any == NULL) | |
b34976b6 AM |
580 | return FALSE; |
581 | return TRUE; | |
13ae64f3 | 582 | } |
cedb70c5 | 583 | |
252b5132 RH |
584 | /* i386 ELF linker hash table. */ |
585 | ||
586 | struct elf_i386_link_hash_table | |
587 | { | |
ebe50bae | 588 | struct elf_link_hash_table elf; |
252b5132 | 589 | |
6725bdbf AM |
590 | /* Short-cuts to get to dynamic linker sections. */ |
591 | asection *sgot; | |
592 | asection *sgotplt; | |
593 | asection *srelgot; | |
594 | asection *splt; | |
595 | asection *srelplt; | |
596 | asection *sdynbss; | |
597 | asection *srelbss; | |
ec338859 | 598 | |
13ae64f3 JJ |
599 | union { |
600 | bfd_signed_vma refcount; | |
601 | bfd_vma offset; | |
602 | } tls_ldm_got; | |
603 | ||
ec338859 AM |
604 | /* Small local sym to section mapping cache. */ |
605 | struct sym_sec_cache sym_sec; | |
6725bdbf | 606 | }; |
252b5132 RH |
607 | |
608 | /* Get the i386 ELF linker hash table from a link_info structure. */ | |
609 | ||
610 | #define elf_i386_hash_table(p) \ | |
611 | ((struct elf_i386_link_hash_table *) ((p)->hash)) | |
612 | ||
613 | /* Create an entry in an i386 ELF linker hash table. */ | |
614 | ||
615 | static struct bfd_hash_entry * | |
55fd94b0 AM |
616 | link_hash_newfunc (struct bfd_hash_entry *entry, |
617 | struct bfd_hash_table *table, | |
618 | const char *string) | |
252b5132 | 619 | { |
252b5132 RH |
620 | /* Allocate the structure if it has not already been allocated by a |
621 | subclass. */ | |
ebe50bae AM |
622 | if (entry == NULL) |
623 | { | |
624 | entry = bfd_hash_allocate (table, | |
625 | sizeof (struct elf_i386_link_hash_entry)); | |
626 | if (entry == NULL) | |
627 | return entry; | |
628 | } | |
252b5132 RH |
629 | |
630 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
631 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
632 | if (entry != NULL) | |
252b5132 | 633 | { |
ebe50bae AM |
634 | struct elf_i386_link_hash_entry *eh; |
635 | ||
636 | eh = (struct elf_i386_link_hash_entry *) entry; | |
637 | eh->dyn_relocs = NULL; | |
13ae64f3 | 638 | eh->tls_type = GOT_UNKNOWN; |
252b5132 RH |
639 | } |
640 | ||
ebe50bae | 641 | return entry; |
252b5132 RH |
642 | } |
643 | ||
644 | /* Create an i386 ELF linker hash table. */ | |
645 | ||
646 | static struct bfd_link_hash_table * | |
55fd94b0 | 647 | elf_i386_link_hash_table_create (bfd *abfd) |
252b5132 RH |
648 | { |
649 | struct elf_i386_link_hash_table *ret; | |
dc810e39 | 650 | bfd_size_type amt = sizeof (struct elf_i386_link_hash_table); |
252b5132 | 651 | |
55fd94b0 | 652 | ret = bfd_malloc (amt); |
ebe50bae | 653 | if (ret == NULL) |
252b5132 RH |
654 | return NULL; |
655 | ||
ebe50bae | 656 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc)) |
252b5132 | 657 | { |
e2d34d7d | 658 | free (ret); |
252b5132 RH |
659 | return NULL; |
660 | } | |
661 | ||
6725bdbf AM |
662 | ret->sgot = NULL; |
663 | ret->sgotplt = NULL; | |
664 | ret->srelgot = NULL; | |
665 | ret->splt = NULL; | |
666 | ret->srelplt = NULL; | |
667 | ret->sdynbss = NULL; | |
668 | ret->srelbss = NULL; | |
7a624474 | 669 | ret->tls_ldm_got.refcount = 0; |
ec338859 | 670 | ret->sym_sec.abfd = NULL; |
6725bdbf | 671 | |
ebe50bae | 672 | return &ret->elf.root; |
252b5132 RH |
673 | } |
674 | ||
6725bdbf AM |
675 | /* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up |
676 | shortcuts to them in our hash table. */ | |
677 | ||
b34976b6 | 678 | static bfd_boolean |
55fd94b0 | 679 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
6725bdbf AM |
680 | { |
681 | struct elf_i386_link_hash_table *htab; | |
682 | ||
683 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 684 | return FALSE; |
6725bdbf AM |
685 | |
686 | htab = elf_i386_hash_table (info); | |
687 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
688 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
689 | if (!htab->sgot || !htab->sgotplt) | |
690 | abort (); | |
691 | ||
692 | htab->srelgot = bfd_make_section (dynobj, ".rel.got"); | |
693 | if (htab->srelgot == NULL | |
694 | || ! bfd_set_section_flags (dynobj, htab->srelgot, | |
695 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
696 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
697 | | SEC_READONLY)) | |
698 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) | |
b34976b6 AM |
699 | return FALSE; |
700 | return TRUE; | |
6725bdbf AM |
701 | } |
702 | ||
703 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and | |
704 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
705 | hash table. */ | |
706 | ||
b34976b6 | 707 | static bfd_boolean |
55fd94b0 | 708 | elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
6725bdbf AM |
709 | { |
710 | struct elf_i386_link_hash_table *htab; | |
711 | ||
712 | htab = elf_i386_hash_table (info); | |
713 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
b34976b6 | 714 | return FALSE; |
6725bdbf AM |
715 | |
716 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 717 | return FALSE; |
6725bdbf AM |
718 | |
719 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
720 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt"); | |
721 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
722 | if (!info->shared) | |
723 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
724 | ||
725 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
726 | || (!info->shared && !htab->srelbss)) | |
727 | abort (); | |
728 | ||
b34976b6 | 729 | return TRUE; |
6725bdbf AM |
730 | } |
731 | ||
ebe50bae AM |
732 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
733 | ||
51b64d56 | 734 | static void |
9c5bfbb7 | 735 | elf_i386_copy_indirect_symbol (const struct elf_backend_data *bed, |
55fd94b0 AM |
736 | struct elf_link_hash_entry *dir, |
737 | struct elf_link_hash_entry *ind) | |
ebe50bae AM |
738 | { |
739 | struct elf_i386_link_hash_entry *edir, *eind; | |
740 | ||
741 | edir = (struct elf_i386_link_hash_entry *) dir; | |
742 | eind = (struct elf_i386_link_hash_entry *) ind; | |
743 | ||
bbd7ec4a | 744 | if (eind->dyn_relocs != NULL) |
ebe50bae | 745 | { |
bbd7ec4a AM |
746 | if (edir->dyn_relocs != NULL) |
747 | { | |
748 | struct elf_i386_dyn_relocs **pp; | |
749 | struct elf_i386_dyn_relocs *p; | |
750 | ||
1e370bd2 | 751 | if (ind->root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
752 | abort (); |
753 | ||
754 | /* Add reloc counts against the weak sym to the strong sym | |
755 | list. Merge any entries against the same section. */ | |
756 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
757 | { | |
758 | struct elf_i386_dyn_relocs *q; | |
759 | ||
760 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
761 | if (q->sec == p->sec) | |
762 | { | |
763 | q->pc_count += p->pc_count; | |
764 | q->count += p->count; | |
765 | *pp = p->next; | |
766 | break; | |
767 | } | |
768 | if (q == NULL) | |
769 | pp = &p->next; | |
770 | } | |
771 | *pp = edir->dyn_relocs; | |
772 | } | |
773 | ||
ebe50bae AM |
774 | edir->dyn_relocs = eind->dyn_relocs; |
775 | eind->dyn_relocs = NULL; | |
776 | } | |
ebe50bae | 777 | |
cd67d266 JJ |
778 | if (ind->root.type == bfd_link_hash_indirect |
779 | && dir->got.refcount <= 0) | |
780 | { | |
781 | edir->tls_type = eind->tls_type; | |
782 | eind->tls_type = GOT_UNKNOWN; | |
783 | } | |
81848ca0 AM |
784 | |
785 | if (ELIMINATE_COPY_RELOCS | |
786 | && ind->root.type != bfd_link_hash_indirect | |
787 | && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0) | |
788 | /* If called to transfer flags for a weakdef during processing | |
789 | of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF. | |
790 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
791 | dir->elf_link_hash_flags |= | |
792 | (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC | |
793 | | ELF_LINK_HASH_REF_REGULAR | |
3addb0a9 | 794 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK |
c6585bbb JJ |
795 | | ELF_LINK_HASH_NEEDS_PLT |
796 | | ELF_LINK_POINTER_EQUALITY_NEEDED)); | |
81848ca0 AM |
797 | else |
798 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind); | |
ebe50bae AM |
799 | } |
800 | ||
13ae64f3 | 801 | static int |
55fd94b0 | 802 | elf_i386_tls_transition (struct bfd_link_info *info, int r_type, int is_local) |
13ae64f3 JJ |
803 | { |
804 | if (info->shared) | |
805 | return r_type; | |
806 | ||
807 | switch (r_type) | |
808 | { | |
809 | case R_386_TLS_GD: | |
810 | case R_386_TLS_IE_32: | |
811 | if (is_local) | |
812 | return R_386_TLS_LE_32; | |
813 | return R_386_TLS_IE_32; | |
37e55690 JJ |
814 | case R_386_TLS_IE: |
815 | case R_386_TLS_GOTIE: | |
816 | if (is_local) | |
817 | return R_386_TLS_LE_32; | |
818 | return r_type; | |
13ae64f3 JJ |
819 | case R_386_TLS_LDM: |
820 | return R_386_TLS_LE_32; | |
821 | } | |
822 | ||
823 | return r_type; | |
824 | } | |
825 | ||
252b5132 | 826 | /* Look through the relocs for a section during the first phase, and |
0ac8d2ca AM |
827 | calculate needed space in the global offset table, procedure linkage |
828 | table, and dynamic reloc sections. */ | |
252b5132 | 829 | |
b34976b6 | 830 | static bfd_boolean |
55fd94b0 AM |
831 | elf_i386_check_relocs (bfd *abfd, |
832 | struct bfd_link_info *info, | |
833 | asection *sec, | |
834 | const Elf_Internal_Rela *relocs) | |
252b5132 | 835 | { |
6725bdbf | 836 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
837 | Elf_Internal_Shdr *symtab_hdr; |
838 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
839 | const Elf_Internal_Rela *rel; |
840 | const Elf_Internal_Rela *rel_end; | |
252b5132 RH |
841 | asection *sreloc; |
842 | ||
1049f94e | 843 | if (info->relocatable) |
b34976b6 | 844 | return TRUE; |
252b5132 | 845 | |
6725bdbf | 846 | htab = elf_i386_hash_table (info); |
252b5132 RH |
847 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
848 | sym_hashes = elf_sym_hashes (abfd); | |
252b5132 | 849 | |
252b5132 RH |
850 | sreloc = NULL; |
851 | ||
852 | rel_end = relocs + sec->reloc_count; | |
853 | for (rel = relocs; rel < rel_end; rel++) | |
854 | { | |
13ae64f3 | 855 | unsigned int r_type; |
252b5132 RH |
856 | unsigned long r_symndx; |
857 | struct elf_link_hash_entry *h; | |
858 | ||
859 | r_symndx = ELF32_R_SYM (rel->r_info); | |
13ae64f3 | 860 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 861 | |
d9bc7a44 | 862 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
f5f31454 | 863 | { |
8f615d07 AM |
864 | (*_bfd_error_handler) (_("%s: bad symbol index: %d"), |
865 | bfd_archive_filename (abfd), | |
866 | r_symndx); | |
b34976b6 | 867 | return FALSE; |
f5f31454 L |
868 | } |
869 | ||
252b5132 RH |
870 | if (r_symndx < symtab_hdr->sh_info) |
871 | h = NULL; | |
872 | else | |
873 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
874 | ||
13ae64f3 JJ |
875 | r_type = elf_i386_tls_transition (info, r_type, h == NULL); |
876 | ||
877 | switch (r_type) | |
252b5132 | 878 | { |
37e55690 JJ |
879 | case R_386_TLS_LDM: |
880 | htab->tls_ldm_got.refcount += 1; | |
881 | goto create_got; | |
882 | ||
883 | case R_386_PLT32: | |
884 | /* This symbol requires a procedure linkage table entry. We | |
885 | actually build the entry in adjust_dynamic_symbol, | |
886 | because this might be a case of linking PIC code which is | |
887 | never referenced by a dynamic object, in which case we | |
888 | don't need to generate a procedure linkage table entry | |
889 | after all. */ | |
890 | ||
891 | /* If this is a local symbol, we resolve it directly without | |
892 | creating a procedure linkage table entry. */ | |
893 | if (h == NULL) | |
894 | continue; | |
895 | ||
896 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
897 | h->plt.refcount += 1; | |
898 | break; | |
899 | ||
13ae64f3 | 900 | case R_386_TLS_IE_32: |
37e55690 JJ |
901 | case R_386_TLS_IE: |
902 | case R_386_TLS_GOTIE: | |
13ae64f3 JJ |
903 | if (info->shared) |
904 | info->flags |= DF_STATIC_TLS; | |
37e55690 JJ |
905 | /* Fall through */ |
906 | ||
252b5132 | 907 | case R_386_GOT32: |
13ae64f3 | 908 | case R_386_TLS_GD: |
252b5132 | 909 | /* This symbol requires a global offset table entry. */ |
13ae64f3 JJ |
910 | { |
911 | int tls_type, old_tls_type; | |
912 | ||
913 | switch (r_type) | |
914 | { | |
915 | default: | |
916 | case R_386_GOT32: tls_type = GOT_NORMAL; break; | |
917 | case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; | |
37e55690 JJ |
918 | case R_386_TLS_IE_32: |
919 | if (ELF32_R_TYPE (rel->r_info) == r_type) | |
920 | tls_type = GOT_TLS_IE_NEG; | |
921 | else | |
922 | /* If this is a GD->IE transition, we may use either of | |
923 | R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ | |
924 | tls_type = GOT_TLS_IE; | |
925 | break; | |
926 | case R_386_TLS_IE: | |
927 | case R_386_TLS_GOTIE: | |
928 | tls_type = GOT_TLS_IE_POS; break; | |
13ae64f3 JJ |
929 | } |
930 | ||
931 | if (h != NULL) | |
932 | { | |
933 | h->got.refcount += 1; | |
934 | old_tls_type = elf_i386_hash_entry(h)->tls_type; | |
935 | } | |
936 | else | |
937 | { | |
938 | bfd_signed_vma *local_got_refcounts; | |
939 | ||
940 | /* This is a global offset table entry for a local symbol. */ | |
941 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
942 | if (local_got_refcounts == NULL) | |
943 | { | |
944 | bfd_size_type size; | |
945 | ||
946 | size = symtab_hdr->sh_info; | |
947 | size *= (sizeof (bfd_signed_vma) + sizeof(char)); | |
55fd94b0 | 948 | local_got_refcounts = bfd_zalloc (abfd, size); |
13ae64f3 | 949 | if (local_got_refcounts == NULL) |
b34976b6 | 950 | return FALSE; |
13ae64f3 JJ |
951 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
952 | elf_i386_local_got_tls_type (abfd) | |
953 | = (char *) (local_got_refcounts + symtab_hdr->sh_info); | |
954 | } | |
955 | local_got_refcounts[r_symndx] += 1; | |
956 | old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx]; | |
957 | } | |
958 | ||
37e55690 JJ |
959 | if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) |
960 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
961 | /* If a TLS symbol is accessed using IE at least once, |
962 | there is no point to use dynamic model for it. */ | |
37e55690 JJ |
963 | else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
964 | && (old_tls_type != GOT_TLS_GD | |
965 | || (tls_type & GOT_TLS_IE) == 0)) | |
13ae64f3 | 966 | { |
37e55690 JJ |
967 | if ((old_tls_type & GOT_TLS_IE) && tls_type == GOT_TLS_GD) |
968 | tls_type = old_tls_type; | |
13ae64f3 JJ |
969 | else |
970 | { | |
971 | (*_bfd_error_handler) | |
55fd94b0 AM |
972 | (_("%s: `%s' accessed both as normal and " |
973 | "thread local symbol"), | |
37e55690 JJ |
974 | bfd_archive_filename (abfd), |
975 | h ? h->root.root.string : "<local>"); | |
b34976b6 | 976 | return FALSE; |
13ae64f3 JJ |
977 | } |
978 | } | |
979 | ||
980 | if (old_tls_type != tls_type) | |
981 | { | |
982 | if (h != NULL) | |
983 | elf_i386_hash_entry (h)->tls_type = tls_type; | |
984 | else | |
985 | elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
986 | } | |
987 | } | |
0ac8d2ca AM |
988 | /* Fall through */ |
989 | ||
990 | case R_386_GOTOFF: | |
991 | case R_386_GOTPC: | |
13ae64f3 | 992 | create_got: |
0ac8d2ca AM |
993 | if (htab->sgot == NULL) |
994 | { | |
995 | if (htab->elf.dynobj == NULL) | |
996 | htab->elf.dynobj = abfd; | |
997 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 998 | return FALSE; |
0ac8d2ca | 999 | } |
37e55690 JJ |
1000 | if (r_type != R_386_TLS_IE) |
1001 | break; | |
1002 | /* Fall through */ | |
252b5132 | 1003 | |
37e55690 JJ |
1004 | case R_386_TLS_LE_32: |
1005 | case R_386_TLS_LE: | |
1006 | if (!info->shared) | |
1007 | break; | |
bffbf940 | 1008 | info->flags |= DF_STATIC_TLS; |
b34976b6 | 1009 | /* Fall through */ |
252b5132 RH |
1010 | |
1011 | case R_386_32: | |
1012 | case R_386_PC32: | |
12d0ee4a | 1013 | if (h != NULL && !info->shared) |
6725bdbf | 1014 | { |
12d0ee4a | 1015 | /* If this reloc is in a read-only section, we might |
ebe50bae AM |
1016 | need a copy reloc. We can't check reliably at this |
1017 | stage whether the section is read-only, as input | |
1018 | sections have not yet been mapped to output sections. | |
1019 | Tentatively set the flag for now, and correct in | |
1020 | adjust_dynamic_symbol. */ | |
1021 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
12d0ee4a AM |
1022 | |
1023 | /* We may need a .plt entry if the function this reloc | |
1024 | refers to is in a shared lib. */ | |
51b64d56 | 1025 | h->plt.refcount += 1; |
c6585bbb JJ |
1026 | if (r_type != R_386_PC32) |
1027 | h->elf_link_hash_flags |= ELF_LINK_POINTER_EQUALITY_NEEDED; | |
6725bdbf | 1028 | } |
7843f00e | 1029 | |
252b5132 | 1030 | /* If we are creating a shared library, and this is a reloc |
f69da49f AM |
1031 | against a global symbol, or a non PC relative reloc |
1032 | against a local symbol, then we need to copy the reloc | |
1033 | into the shared library. However, if we are linking with | |
1034 | -Bsymbolic, we do not need to copy a reloc against a | |
1035 | global symbol which is defined in an object we are | |
1036 | including in the link (i.e., DEF_REGULAR is set). At | |
1037 | this point we have not seen all the input files, so it is | |
1038 | possible that DEF_REGULAR is not set now but will be set | |
1f655a09 L |
1039 | later (it is never cleared). In case of a weak definition, |
1040 | DEF_REGULAR may be cleared later by a strong definition in | |
ebe50bae | 1041 | a shared library. We account for that possibility below by |
1f655a09 L |
1042 | storing information in the relocs_copied field of the hash |
1043 | table entry. A similar situation occurs when creating | |
1044 | shared libraries and symbol visibility changes render the | |
12d0ee4a | 1045 | symbol local. |
56882138 | 1046 | |
12d0ee4a AM |
1047 | If on the other hand, we are creating an executable, we |
1048 | may need to keep relocations for symbols satisfied by a | |
1049 | dynamic library if we manage to avoid copy relocs for the | |
1050 | symbol. */ | |
1051 | if ((info->shared | |
1052 | && (sec->flags & SEC_ALLOC) != 0 | |
13ae64f3 | 1053 | && (r_type != R_386_PC32 |
12d0ee4a AM |
1054 | || (h != NULL |
1055 | && (! info->symbolic | |
1056 | || h->root.type == bfd_link_hash_defweak | |
1057 | || (h->elf_link_hash_flags | |
1058 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
a23b6845 AM |
1059 | || (ELIMINATE_COPY_RELOCS |
1060 | && !info->shared | |
12d0ee4a AM |
1061 | && (sec->flags & SEC_ALLOC) != 0 |
1062 | && h != NULL | |
12d0ee4a AM |
1063 | && (h->root.type == bfd_link_hash_defweak |
1064 | || (h->elf_link_hash_flags | |
1065 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
252b5132 | 1066 | { |
ec338859 AM |
1067 | struct elf_i386_dyn_relocs *p; |
1068 | struct elf_i386_dyn_relocs **head; | |
1069 | ||
12d0ee4a AM |
1070 | /* We must copy these reloc types into the output file. |
1071 | Create a reloc section in dynobj and make room for | |
1072 | this reloc. */ | |
252b5132 RH |
1073 | if (sreloc == NULL) |
1074 | { | |
1075 | const char *name; | |
0ac8d2ca | 1076 | bfd *dynobj; |
e92d460e AM |
1077 | unsigned int strndx = elf_elfheader (abfd)->e_shstrndx; |
1078 | unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name; | |
252b5132 | 1079 | |
e92d460e | 1080 | name = bfd_elf_string_from_elf_section (abfd, strndx, shnam); |
252b5132 | 1081 | if (name == NULL) |
b34976b6 | 1082 | return FALSE; |
252b5132 | 1083 | |
c8492176 L |
1084 | if (strncmp (name, ".rel", 4) != 0 |
1085 | || strcmp (bfd_get_section_name (abfd, sec), | |
1086 | name + 4) != 0) | |
1087 | { | |
0c715baa AM |
1088 | (*_bfd_error_handler) |
1089 | (_("%s: bad relocation section name `%s\'"), | |
1090 | bfd_archive_filename (abfd), name); | |
f5f31454 | 1091 | } |
252b5132 | 1092 | |
0ac8d2ca AM |
1093 | if (htab->elf.dynobj == NULL) |
1094 | htab->elf.dynobj = abfd; | |
1095 | ||
1096 | dynobj = htab->elf.dynobj; | |
252b5132 RH |
1097 | sreloc = bfd_get_section_by_name (dynobj, name); |
1098 | if (sreloc == NULL) | |
1099 | { | |
1100 | flagword flags; | |
1101 | ||
1102 | sreloc = bfd_make_section (dynobj, name); | |
1103 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
1104 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1105 | if ((sec->flags & SEC_ALLOC) != 0) | |
1106 | flags |= SEC_ALLOC | SEC_LOAD; | |
1107 | if (sreloc == NULL | |
1108 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
1109 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) | |
b34976b6 | 1110 | return FALSE; |
252b5132 | 1111 | } |
0c715baa | 1112 | elf_section_data (sec)->sreloc = sreloc; |
252b5132 RH |
1113 | } |
1114 | ||
0c715baa AM |
1115 | /* If this is a global symbol, we count the number of |
1116 | relocations we need for this symbol. */ | |
1117 | if (h != NULL) | |
252b5132 | 1118 | { |
ec338859 | 1119 | head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs; |
0c715baa AM |
1120 | } |
1121 | else | |
1122 | { | |
ec338859 AM |
1123 | /* Track dynamic relocs needed for local syms too. |
1124 | We really need local syms available to do this | |
1125 | easily. Oh well. */ | |
1126 | ||
1127 | asection *s; | |
1128 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
1129 | sec, r_symndx); | |
1130 | if (s == NULL) | |
b34976b6 | 1131 | return FALSE; |
ec338859 AM |
1132 | |
1133 | head = ((struct elf_i386_dyn_relocs **) | |
1134 | &elf_section_data (s)->local_dynrel); | |
1135 | } | |
1136 | ||
1137 | p = *head; | |
1138 | if (p == NULL || p->sec != sec) | |
1139 | { | |
1140 | bfd_size_type amt = sizeof *p; | |
55fd94b0 | 1141 | p = bfd_alloc (htab->elf.dynobj, amt); |
ec338859 | 1142 | if (p == NULL) |
b34976b6 | 1143 | return FALSE; |
ec338859 AM |
1144 | p->next = *head; |
1145 | *head = p; | |
1146 | p->sec = sec; | |
1147 | p->count = 0; | |
1148 | p->pc_count = 0; | |
252b5132 | 1149 | } |
ec338859 AM |
1150 | |
1151 | p->count += 1; | |
13ae64f3 | 1152 | if (r_type == R_386_PC32) |
ec338859 | 1153 | p->pc_count += 1; |
252b5132 | 1154 | } |
252b5132 RH |
1155 | break; |
1156 | ||
1157 | /* This relocation describes the C++ object vtable hierarchy. | |
1158 | Reconstruct it for later use during GC. */ | |
1159 | case R_386_GNU_VTINHERIT: | |
1160 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1161 | return FALSE; |
252b5132 RH |
1162 | break; |
1163 | ||
1164 | /* This relocation describes which C++ vtable entries are actually | |
1165 | used. Record for later use during GC. */ | |
1166 | case R_386_GNU_VTENTRY: | |
1167 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1168 | return FALSE; |
252b5132 RH |
1169 | break; |
1170 | ||
1171 | default: | |
1172 | break; | |
1173 | } | |
1174 | } | |
1175 | ||
b34976b6 | 1176 | return TRUE; |
252b5132 RH |
1177 | } |
1178 | ||
1179 | /* Return the section that should be marked against GC for a given | |
1180 | relocation. */ | |
1181 | ||
1182 | static asection * | |
55fd94b0 AM |
1183 | elf_i386_gc_mark_hook (asection *sec, |
1184 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1185 | Elf_Internal_Rela *rel, | |
1186 | struct elf_link_hash_entry *h, | |
1187 | Elf_Internal_Sym *sym) | |
252b5132 RH |
1188 | { |
1189 | if (h != NULL) | |
1190 | { | |
1191 | switch (ELF32_R_TYPE (rel->r_info)) | |
1192 | { | |
1193 | case R_386_GNU_VTINHERIT: | |
1194 | case R_386_GNU_VTENTRY: | |
1195 | break; | |
1196 | ||
1197 | default: | |
1198 | switch (h->root.type) | |
1199 | { | |
1200 | case bfd_link_hash_defined: | |
1201 | case bfd_link_hash_defweak: | |
1202 | return h->root.u.def.section; | |
1203 | ||
1204 | case bfd_link_hash_common: | |
1205 | return h->root.u.c.p->section; | |
1206 | ||
1207 | default: | |
1208 | break; | |
1209 | } | |
1210 | } | |
1211 | } | |
1212 | else | |
1e2f5b6e | 1213 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
252b5132 RH |
1214 | |
1215 | return NULL; | |
1216 | } | |
1217 | ||
1218 | /* Update the got entry reference counts for the section being removed. */ | |
1219 | ||
b34976b6 | 1220 | static bfd_boolean |
55fd94b0 AM |
1221 | elf_i386_gc_sweep_hook (bfd *abfd, |
1222 | struct bfd_link_info *info, | |
1223 | asection *sec, | |
1224 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1225 | { |
dd5724d5 AM |
1226 | Elf_Internal_Shdr *symtab_hdr; |
1227 | struct elf_link_hash_entry **sym_hashes; | |
1228 | bfd_signed_vma *local_got_refcounts; | |
1229 | const Elf_Internal_Rela *rel, *relend; | |
dd5724d5 | 1230 | |
ec338859 | 1231 | elf_section_data (sec)->local_dynrel = NULL; |
dd5724d5 | 1232 | |
6725bdbf AM |
1233 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1234 | sym_hashes = elf_sym_hashes (abfd); | |
1235 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
dd5724d5 AM |
1236 | |
1237 | relend = relocs + sec->reloc_count; | |
1238 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1239 | { |
1240 | unsigned long r_symndx; | |
1241 | unsigned int r_type; | |
1242 | struct elf_link_hash_entry *h = NULL; | |
37e55690 | 1243 | |
26e41594 AM |
1244 | r_symndx = ELF32_R_SYM (rel->r_info); |
1245 | if (r_symndx >= symtab_hdr->sh_info) | |
1246 | { | |
1247 | struct elf_i386_link_hash_entry *eh; | |
1248 | struct elf_i386_dyn_relocs **pp; | |
1249 | struct elf_i386_dyn_relocs *p; | |
dd5724d5 | 1250 | |
26e41594 AM |
1251 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1252 | eh = (struct elf_i386_link_hash_entry *) h; | |
0c715baa | 1253 | |
26e41594 AM |
1254 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1255 | if (p->sec == sec) | |
1256 | { | |
1257 | /* Everything must go for SEC. */ | |
1258 | *pp = p->next; | |
1259 | break; | |
1260 | } | |
1261 | } | |
0c715baa | 1262 | |
26e41594 AM |
1263 | r_type = ELF32_R_TYPE (rel->r_info); |
1264 | r_type = elf_i386_tls_transition (info, r_type, h != NULL); | |
1265 | switch (r_type) | |
1266 | { | |
1267 | case R_386_TLS_LDM: | |
1268 | if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0) | |
1269 | elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1; | |
1270 | break; | |
0c715baa | 1271 | |
26e41594 AM |
1272 | case R_386_TLS_GD: |
1273 | case R_386_TLS_IE_32: | |
1274 | case R_386_TLS_IE: | |
1275 | case R_386_TLS_GOTIE: | |
1276 | case R_386_GOT32: | |
1277 | if (h != NULL) | |
1278 | { | |
1279 | if (h->got.refcount > 0) | |
1280 | h->got.refcount -= 1; | |
1281 | } | |
1282 | else if (local_got_refcounts != NULL) | |
1283 | { | |
1284 | if (local_got_refcounts[r_symndx] > 0) | |
1285 | local_got_refcounts[r_symndx] -= 1; | |
1286 | } | |
1287 | break; | |
0c715baa | 1288 | |
26e41594 AM |
1289 | case R_386_32: |
1290 | case R_386_PC32: | |
1291 | if (info->shared) | |
1292 | break; | |
1293 | /* Fall through */ | |
6725bdbf | 1294 | |
26e41594 AM |
1295 | case R_386_PLT32: |
1296 | if (h != NULL) | |
1297 | { | |
1298 | if (h->plt.refcount > 0) | |
1299 | h->plt.refcount -= 1; | |
1300 | } | |
1301 | break; | |
dd5724d5 | 1302 | |
26e41594 AM |
1303 | default: |
1304 | break; | |
1305 | } | |
1306 | } | |
252b5132 | 1307 | |
b34976b6 | 1308 | return TRUE; |
252b5132 RH |
1309 | } |
1310 | ||
1311 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1312 | regular object. The current definition is in some section of the | |
1313 | dynamic object, but we're not including those sections. We have to | |
1314 | change the definition to something the rest of the link can | |
1315 | understand. */ | |
1316 | ||
b34976b6 | 1317 | static bfd_boolean |
55fd94b0 AM |
1318 | elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info, |
1319 | struct elf_link_hash_entry *h) | |
252b5132 | 1320 | { |
6725bdbf | 1321 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1322 | asection *s; |
1323 | unsigned int power_of_two; | |
1324 | ||
252b5132 RH |
1325 | /* If this is a function, put it in the procedure linkage table. We |
1326 | will fill in the contents of the procedure linkage table later, | |
1327 | when we know the address of the .got section. */ | |
1328 | if (h->type == STT_FUNC | |
1329 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1330 | { | |
6725bdbf | 1331 | if (h->plt.refcount <= 0 |
9c7a29a3 AM |
1332 | || SYMBOL_CALLS_LOCAL (info, h) |
1333 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1334 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
1335 | { |
1336 | /* This case can occur if we saw a PLT32 reloc in an input | |
dd5724d5 AM |
1337 | file, but the symbol was never referred to by a dynamic |
1338 | object, or if all references were garbage collected. In | |
1339 | such a case, we don't actually need to build a procedure | |
1340 | linkage table, and we can just do a PC32 reloc instead. */ | |
bbd7ec4a | 1341 | h->plt.offset = (bfd_vma) -1; |
dd5724d5 | 1342 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
252b5132 RH |
1343 | } |
1344 | ||
b34976b6 | 1345 | return TRUE; |
252b5132 | 1346 | } |
6725bdbf AM |
1347 | else |
1348 | /* It's possible that we incorrectly decided a .plt reloc was | |
1349 | needed for an R_386_PC32 reloc to a non-function sym in | |
1350 | check_relocs. We can't decide accurately between function and | |
1351 | non-function syms in check-relocs; Objects loaded later in | |
1352 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1353 | h->plt.offset = (bfd_vma) -1; |
252b5132 RH |
1354 | |
1355 | /* If this is a weak symbol, and there is a real definition, the | |
1356 | processor independent code will have arranged for us to see the | |
1357 | real definition first, and we can just use the same value. */ | |
1358 | if (h->weakdef != NULL) | |
1359 | { | |
1360 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1361 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1362 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1363 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
a23b6845 AM |
1364 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
1365 | h->elf_link_hash_flags | |
1366 | = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF) | |
1367 | | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF)); | |
b34976b6 | 1368 | return TRUE; |
252b5132 RH |
1369 | } |
1370 | ||
1371 | /* This is a reference to a symbol defined by a dynamic object which | |
1372 | is not a function. */ | |
1373 | ||
1374 | /* If we are creating a shared library, we must presume that the | |
1375 | only references to the symbol are via the global offset table. | |
1376 | For such cases we need not do anything here; the relocations will | |
1377 | be handled correctly by relocate_section. */ | |
1378 | if (info->shared) | |
b34976b6 | 1379 | return TRUE; |
252b5132 | 1380 | |
7843f00e ILT |
1381 | /* If there are no references to this symbol that do not use the |
1382 | GOT, we don't need to generate a copy reloc. */ | |
1383 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
b34976b6 | 1384 | return TRUE; |
7843f00e | 1385 | |
8bd621d8 AM |
1386 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1387 | if (info->nocopyreloc) | |
1388 | { | |
1389 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
b34976b6 | 1390 | return TRUE; |
8bd621d8 AM |
1391 | } |
1392 | ||
a23b6845 | 1393 | if (ELIMINATE_COPY_RELOCS) |
ebe50bae | 1394 | { |
a23b6845 AM |
1395 | struct elf_i386_link_hash_entry * eh; |
1396 | struct elf_i386_dyn_relocs *p; | |
ebe50bae | 1397 | |
a23b6845 AM |
1398 | eh = (struct elf_i386_link_hash_entry *) h; |
1399 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1400 | { | |
1401 | s = p->sec->output_section; | |
1402 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1403 | break; | |
1404 | } | |
1405 | ||
1406 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1407 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1408 | if (p == NULL) | |
1409 | { | |
1410 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
1411 | return TRUE; | |
1412 | } | |
ebe50bae AM |
1413 | } |
1414 | ||
252b5132 RH |
1415 | /* We must allocate the symbol in our .dynbss section, which will |
1416 | become part of the .bss section of the executable. There will be | |
1417 | an entry for this symbol in the .dynsym section. The dynamic | |
1418 | object will contain position independent code, so all references | |
1419 | from the dynamic object to this symbol will go through the global | |
1420 | offset table. The dynamic linker will use the .dynsym entry to | |
1421 | determine the address it must put in the global offset table, so | |
1422 | both the dynamic object and the regular object will refer to the | |
1423 | same memory location for the variable. */ | |
1424 | ||
0ac8d2ca | 1425 | htab = elf_i386_hash_table (info); |
252b5132 RH |
1426 | |
1427 | /* We must generate a R_386_COPY reloc to tell the dynamic linker to | |
1428 | copy the initial value out of the dynamic object and into the | |
0ac8d2ca | 1429 | runtime process image. */ |
252b5132 RH |
1430 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1431 | { | |
0ac8d2ca | 1432 | htab->srelbss->_raw_size += sizeof (Elf32_External_Rel); |
252b5132 RH |
1433 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
1434 | } | |
1435 | ||
1436 | /* We need to figure out the alignment required for this symbol. I | |
1437 | have no idea how ELF linkers handle this. */ | |
1438 | power_of_two = bfd_log2 (h->size); | |
1439 | if (power_of_two > 3) | |
1440 | power_of_two = 3; | |
1441 | ||
1442 | /* Apply the required alignment. */ | |
0ac8d2ca AM |
1443 | s = htab->sdynbss; |
1444 | s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two)); | |
1445 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) | |
252b5132 | 1446 | { |
0ac8d2ca | 1447 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 1448 | return FALSE; |
252b5132 RH |
1449 | } |
1450 | ||
1451 | /* Define the symbol as being at this point in the section. */ | |
1452 | h->root.u.def.section = s; | |
1453 | h->root.u.def.value = s->_raw_size; | |
1454 | ||
1455 | /* Increment the section size to make room for the symbol. */ | |
1456 | s->_raw_size += h->size; | |
1457 | ||
b34976b6 | 1458 | return TRUE; |
252b5132 RH |
1459 | } |
1460 | ||
6725bdbf AM |
1461 | /* This is the condition under which elf_i386_finish_dynamic_symbol |
1462 | will be called from elflink.h. If elflink.h doesn't call our | |
1463 | finish_dynamic_symbol routine, we'll need to do something about | |
1464 | initializing any .plt and .got entries in elf_i386_relocate_section. */ | |
26e41594 | 1465 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \ |
6725bdbf | 1466 | ((DYN) \ |
26e41594 | 1467 | && ((SHARED) \ |
6725bdbf AM |
1468 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ |
1469 | && ((H)->dynindx != -1 \ | |
1470 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
1471 | ||
1472 | /* Allocate space in .plt, .got and associated reloc sections for | |
0c715baa | 1473 | dynamic relocs. */ |
6725bdbf | 1474 | |
b34976b6 | 1475 | static bfd_boolean |
55fd94b0 | 1476 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
6725bdbf AM |
1477 | { |
1478 | struct bfd_link_info *info; | |
1479 | struct elf_i386_link_hash_table *htab; | |
5a15f56f | 1480 | struct elf_i386_link_hash_entry *eh; |
0c715baa | 1481 | struct elf_i386_dyn_relocs *p; |
6725bdbf | 1482 | |
e92d460e | 1483 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1484 | return TRUE; |
6725bdbf | 1485 | |
e92d460e AM |
1486 | if (h->root.type == bfd_link_hash_warning) |
1487 | /* When warning symbols are created, they **replace** the "real" | |
1488 | entry in the hash table, thus we never get to see the real | |
1489 | symbol in a hash traversal. So look at it now. */ | |
1490 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1491 | ||
6725bdbf AM |
1492 | info = (struct bfd_link_info *) inf; |
1493 | htab = elf_i386_hash_table (info); | |
1494 | ||
ebe50bae | 1495 | if (htab->elf.dynamic_sections_created |
9c7a29a3 | 1496 | && h->plt.refcount > 0) |
6725bdbf | 1497 | { |
5a15f56f AM |
1498 | /* Make sure this symbol is output as a dynamic symbol. |
1499 | Undefined weak syms won't yet be marked as dynamic. */ | |
1500 | if (h->dynindx == -1 | |
1501 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1502 | { | |
1503 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1504 | return FALSE; |
5a15f56f AM |
1505 | } |
1506 | ||
4e795f50 AM |
1507 | if (info->shared |
1508 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
ced53ee5 | 1509 | { |
0ac8d2ca | 1510 | asection *s = htab->splt; |
6725bdbf | 1511 | |
ced53ee5 AM |
1512 | /* If this is the first .plt entry, make room for the special |
1513 | first entry. */ | |
1514 | if (s->_raw_size == 0) | |
1515 | s->_raw_size += PLT_ENTRY_SIZE; | |
6725bdbf | 1516 | |
ced53ee5 | 1517 | h->plt.offset = s->_raw_size; |
6725bdbf | 1518 | |
ced53ee5 AM |
1519 | /* If this symbol is not defined in a regular file, and we are |
1520 | not generating a shared library, then set the symbol to this | |
1521 | location in the .plt. This is required to make function | |
1522 | pointers compare as equal between the normal executable and | |
1523 | the shared library. */ | |
1524 | if (! info->shared | |
1525 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1526 | { | |
1527 | h->root.u.def.section = s; | |
1528 | h->root.u.def.value = h->plt.offset; | |
1529 | } | |
6725bdbf | 1530 | |
ced53ee5 AM |
1531 | /* Make room for this entry. */ |
1532 | s->_raw_size += PLT_ENTRY_SIZE; | |
6725bdbf | 1533 | |
ced53ee5 AM |
1534 | /* We also need to make an entry in the .got.plt section, which |
1535 | will be placed in the .got section by the linker script. */ | |
0ac8d2ca | 1536 | htab->sgotplt->_raw_size += 4; |
6725bdbf | 1537 | |
6725bdbf | 1538 | /* We also need to make an entry in the .rel.plt section. */ |
0ac8d2ca | 1539 | htab->srelplt->_raw_size += sizeof (Elf32_External_Rel); |
6725bdbf | 1540 | } |
ced53ee5 AM |
1541 | else |
1542 | { | |
51b64d56 | 1543 | h->plt.offset = (bfd_vma) -1; |
ced53ee5 AM |
1544 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
1545 | } | |
6725bdbf AM |
1546 | } |
1547 | else | |
1548 | { | |
51b64d56 | 1549 | h->plt.offset = (bfd_vma) -1; |
6725bdbf AM |
1550 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
1551 | } | |
1552 | ||
37e55690 | 1553 | /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, |
13ae64f3 JJ |
1554 | make it a R_386_TLS_LE_32 requiring no TLS entry. */ |
1555 | if (h->got.refcount > 0 | |
1556 | && !info->shared | |
1557 | && h->dynindx == -1 | |
37e55690 | 1558 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE)) |
cedb70c5 | 1559 | h->got.offset = (bfd_vma) -1; |
13ae64f3 | 1560 | else if (h->got.refcount > 0) |
6725bdbf | 1561 | { |
0ac8d2ca | 1562 | asection *s; |
b34976b6 | 1563 | bfd_boolean dyn; |
13ae64f3 | 1564 | int tls_type = elf_i386_hash_entry(h)->tls_type; |
6725bdbf | 1565 | |
5a15f56f AM |
1566 | /* Make sure this symbol is output as a dynamic symbol. |
1567 | Undefined weak syms won't yet be marked as dynamic. */ | |
1568 | if (h->dynindx == -1 | |
1569 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1570 | { | |
1571 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1572 | return FALSE; |
5a15f56f AM |
1573 | } |
1574 | ||
6725bdbf AM |
1575 | s = htab->sgot; |
1576 | h->got.offset = s->_raw_size; | |
1577 | s->_raw_size += 4; | |
13ae64f3 | 1578 | /* R_386_TLS_GD needs 2 consecutive GOT slots. */ |
37e55690 | 1579 | if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE_BOTH) |
13ae64f3 | 1580 | s->_raw_size += 4; |
ebe50bae | 1581 | dyn = htab->elf.dynamic_sections_created; |
13ae64f3 | 1582 | /* R_386_TLS_IE_32 needs one dynamic relocation, |
37e55690 JJ |
1583 | R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, |
1584 | (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we | |
1585 | need two), R_386_TLS_GD needs one if local symbol and two if | |
1586 | global. */ | |
1587 | if (tls_type == GOT_TLS_IE_BOTH) | |
1588 | htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
1589 | else if ((tls_type == GOT_TLS_GD && h->dynindx == -1) | |
1590 | || (tls_type & GOT_TLS_IE)) | |
13ae64f3 JJ |
1591 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); |
1592 | else if (tls_type == GOT_TLS_GD) | |
1593 | htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
ef5aade5 L |
1594 | else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1595 | || h->root.type != bfd_link_hash_undefweak) | |
1596 | && (info->shared | |
1597 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
6725bdbf AM |
1598 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); |
1599 | } | |
1600 | else | |
51b64d56 | 1601 | h->got.offset = (bfd_vma) -1; |
6725bdbf | 1602 | |
5a15f56f AM |
1603 | eh = (struct elf_i386_link_hash_entry *) h; |
1604 | if (eh->dyn_relocs == NULL) | |
b34976b6 | 1605 | return TRUE; |
5a15f56f | 1606 | |
0c715baa AM |
1607 | /* In the shared -Bsymbolic case, discard space allocated for |
1608 | dynamic pc-relative relocs against symbols which turn out to be | |
1609 | defined in regular objects. For the normal shared case, discard | |
0ac8d2ca AM |
1610 | space for pc-relative relocs that have become local due to symbol |
1611 | visibility changes. */ | |
0c715baa AM |
1612 | |
1613 | if (info->shared) | |
5a15f56f | 1614 | { |
09695f56 AM |
1615 | /* The only reloc that uses pc_count is R_386_PC32, which will |
1616 | appear on a call or on something like ".long foo - .". We | |
1617 | want calls to protected symbols to resolve directly to the | |
1618 | function rather than going via the plt. If people want | |
1619 | function pointer comparisons to work as expected then they | |
1620 | should avoid writing assembly like ".long foo - .". */ | |
1621 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
5a15f56f | 1622 | { |
0c715baa AM |
1623 | struct elf_i386_dyn_relocs **pp; |
1624 | ||
1625 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1626 | { | |
1627 | p->count -= p->pc_count; | |
1628 | p->pc_count = 0; | |
1629 | if (p->count == 0) | |
1630 | *pp = p->next; | |
1631 | else | |
1632 | pp = &p->next; | |
1633 | } | |
5a15f56f | 1634 | } |
4e795f50 AM |
1635 | |
1636 | /* Also discard relocs on undefined weak syms with non-default | |
1637 | visibility. */ | |
1638 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1639 | && h->root.type == bfd_link_hash_undefweak) | |
1640 | eh->dyn_relocs = NULL; | |
0c715baa | 1641 | } |
a23b6845 | 1642 | else if (ELIMINATE_COPY_RELOCS) |
0c715baa AM |
1643 | { |
1644 | /* For the non-shared case, discard space for relocs against | |
1645 | symbols which turn out to need copy relocs or are not | |
1646 | dynamic. */ | |
1647 | ||
1648 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
1649 | && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1650 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
ebe50bae | 1651 | || (htab->elf.dynamic_sections_created |
0c715baa AM |
1652 | && (h->root.type == bfd_link_hash_undefweak |
1653 | || h->root.type == bfd_link_hash_undefined)))) | |
1654 | { | |
1655 | /* Make sure this symbol is output as a dynamic symbol. | |
1656 | Undefined weak syms won't yet be marked as dynamic. */ | |
1657 | if (h->dynindx == -1 | |
1658 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1659 | { | |
1660 | if (! bfd_elf32_link_record_dynamic_symbol (info, h)) | |
b34976b6 | 1661 | return FALSE; |
0c715baa | 1662 | } |
5a15f56f | 1663 | |
0c715baa AM |
1664 | /* If that succeeded, we know we'll be keeping all the |
1665 | relocs. */ | |
1666 | if (h->dynindx != -1) | |
1667 | goto keep; | |
1668 | } | |
1669 | ||
1670 | eh->dyn_relocs = NULL; | |
1671 | ||
ec338859 | 1672 | keep: ; |
5a15f56f AM |
1673 | } |
1674 | ||
0c715baa AM |
1675 | /* Finally, allocate space. */ |
1676 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
12d0ee4a | 1677 | { |
0c715baa AM |
1678 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
1679 | sreloc->_raw_size += p->count * sizeof (Elf32_External_Rel); | |
12d0ee4a AM |
1680 | } |
1681 | ||
b34976b6 | 1682 | return TRUE; |
6725bdbf AM |
1683 | } |
1684 | ||
0c715baa AM |
1685 | /* Find any dynamic relocs that apply to read-only sections. */ |
1686 | ||
b34976b6 | 1687 | static bfd_boolean |
55fd94b0 | 1688 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
0c715baa AM |
1689 | { |
1690 | struct elf_i386_link_hash_entry *eh; | |
1691 | struct elf_i386_dyn_relocs *p; | |
1692 | ||
e92d460e AM |
1693 | if (h->root.type == bfd_link_hash_warning) |
1694 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1695 | ||
0c715baa AM |
1696 | eh = (struct elf_i386_link_hash_entry *) h; |
1697 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1698 | { | |
1699 | asection *s = p->sec->output_section; | |
1700 | ||
1701 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1702 | { | |
1703 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
1704 | ||
1705 | info->flags |= DF_TEXTREL; | |
1706 | ||
1707 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 1708 | return FALSE; |
0c715baa AM |
1709 | } |
1710 | } | |
b34976b6 | 1711 | return TRUE; |
0c715baa AM |
1712 | } |
1713 | ||
252b5132 RH |
1714 | /* Set the sizes of the dynamic sections. */ |
1715 | ||
b34976b6 | 1716 | static bfd_boolean |
55fd94b0 AM |
1717 | elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
1718 | struct bfd_link_info *info) | |
252b5132 | 1719 | { |
6725bdbf | 1720 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1721 | bfd *dynobj; |
1722 | asection *s; | |
b34976b6 | 1723 | bfd_boolean relocs; |
0c715baa | 1724 | bfd *ibfd; |
252b5132 | 1725 | |
6725bdbf | 1726 | htab = elf_i386_hash_table (info); |
ebe50bae | 1727 | dynobj = htab->elf.dynobj; |
ffb2e45b AM |
1728 | if (dynobj == NULL) |
1729 | abort (); | |
252b5132 | 1730 | |
ebe50bae | 1731 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
1732 | { |
1733 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 1734 | if (info->executable) |
252b5132 RH |
1735 | { |
1736 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
ffb2e45b AM |
1737 | if (s == NULL) |
1738 | abort (); | |
252b5132 RH |
1739 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
1740 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1741 | } | |
161d71a6 | 1742 | } |
6725bdbf | 1743 | |
0c715baa AM |
1744 | /* Set up .got offsets for local syms, and space for local dynamic |
1745 | relocs. */ | |
1746 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
161d71a6 L |
1747 | { |
1748 | bfd_signed_vma *local_got; | |
1749 | bfd_signed_vma *end_local_got; | |
13ae64f3 | 1750 | char *local_tls_type; |
161d71a6 L |
1751 | bfd_size_type locsymcount; |
1752 | Elf_Internal_Shdr *symtab_hdr; | |
1753 | asection *srel; | |
6725bdbf | 1754 | |
0c715baa | 1755 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
161d71a6 | 1756 | continue; |
6725bdbf | 1757 | |
0c715baa AM |
1758 | for (s = ibfd->sections; s != NULL; s = s->next) |
1759 | { | |
ec338859 | 1760 | struct elf_i386_dyn_relocs *p; |
0c715baa | 1761 | |
ec338859 AM |
1762 | for (p = *((struct elf_i386_dyn_relocs **) |
1763 | &elf_section_data (s)->local_dynrel); | |
1764 | p != NULL; | |
1765 | p = p->next) | |
0c715baa | 1766 | { |
ec338859 AM |
1767 | if (!bfd_is_abs_section (p->sec) |
1768 | && bfd_is_abs_section (p->sec->output_section)) | |
1769 | { | |
1770 | /* Input section has been discarded, either because | |
1771 | it is a copy of a linkonce section or due to | |
1772 | linker script /DISCARD/, so we'll be discarding | |
1773 | the relocs too. */ | |
1774 | } | |
248866a8 | 1775 | else if (p->count != 0) |
ec338859 AM |
1776 | { |
1777 | srel = elf_section_data (p->sec)->sreloc; | |
1778 | srel->_raw_size += p->count * sizeof (Elf32_External_Rel); | |
248866a8 AM |
1779 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
1780 | info->flags |= DF_TEXTREL; | |
ec338859 | 1781 | } |
0c715baa AM |
1782 | } |
1783 | } | |
1784 | ||
1785 | local_got = elf_local_got_refcounts (ibfd); | |
161d71a6 L |
1786 | if (!local_got) |
1787 | continue; | |
6725bdbf | 1788 | |
0c715baa | 1789 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
161d71a6 L |
1790 | locsymcount = symtab_hdr->sh_info; |
1791 | end_local_got = local_got + locsymcount; | |
13ae64f3 | 1792 | local_tls_type = elf_i386_local_got_tls_type (ibfd); |
161d71a6 L |
1793 | s = htab->sgot; |
1794 | srel = htab->srelgot; | |
13ae64f3 | 1795 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) |
161d71a6 L |
1796 | { |
1797 | if (*local_got > 0) | |
6725bdbf | 1798 | { |
161d71a6 L |
1799 | *local_got = s->_raw_size; |
1800 | s->_raw_size += 4; | |
37e55690 JJ |
1801 | if (*local_tls_type == GOT_TLS_GD |
1802 | || *local_tls_type == GOT_TLS_IE_BOTH) | |
13ae64f3 JJ |
1803 | s->_raw_size += 4; |
1804 | if (info->shared | |
1805 | || *local_tls_type == GOT_TLS_GD | |
37e55690 JJ |
1806 | || (*local_tls_type & GOT_TLS_IE)) |
1807 | { | |
1808 | if (*local_tls_type == GOT_TLS_IE_BOTH) | |
1809 | srel->_raw_size += 2 * sizeof (Elf32_External_Rel); | |
1810 | else | |
1811 | srel->_raw_size += sizeof (Elf32_External_Rel); | |
1812 | } | |
6725bdbf | 1813 | } |
161d71a6 L |
1814 | else |
1815 | *local_got = (bfd_vma) -1; | |
6725bdbf | 1816 | } |
252b5132 | 1817 | } |
6725bdbf | 1818 | |
13ae64f3 JJ |
1819 | if (htab->tls_ldm_got.refcount > 0) |
1820 | { | |
1821 | /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM | |
1822 | relocs. */ | |
1823 | htab->tls_ldm_got.offset = htab->sgot->_raw_size; | |
1824 | htab->sgot->_raw_size += 8; | |
1825 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); | |
1826 | } | |
1827 | else | |
1828 | htab->tls_ldm_got.offset = -1; | |
1829 | ||
0c715baa AM |
1830 | /* Allocate global sym .plt and .got entries, and space for global |
1831 | sym dynamic relocs. */ | |
ebe50bae | 1832 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); |
252b5132 | 1833 | |
5a15f56f AM |
1834 | /* We now have determined the sizes of the various dynamic sections. |
1835 | Allocate memory for them. */ | |
b34976b6 | 1836 | relocs = FALSE; |
252b5132 RH |
1837 | for (s = dynobj->sections; s != NULL; s = s->next) |
1838 | { | |
252b5132 RH |
1839 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
1840 | continue; | |
1841 | ||
6725bdbf AM |
1842 | if (s == htab->splt |
1843 | || s == htab->sgot | |
1844 | || s == htab->sgotplt) | |
252b5132 | 1845 | { |
6725bdbf AM |
1846 | /* Strip this section if we don't need it; see the |
1847 | comment below. */ | |
252b5132 | 1848 | } |
6725bdbf | 1849 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rel", 4) == 0) |
252b5132 | 1850 | { |
0ac8d2ca | 1851 | if (s->_raw_size != 0 && s != htab->srelplt) |
b34976b6 | 1852 | relocs = TRUE; |
252b5132 | 1853 | |
0ac8d2ca AM |
1854 | /* We use the reloc_count field as a counter if we need |
1855 | to copy relocs into the output file. */ | |
1856 | s->reloc_count = 0; | |
252b5132 | 1857 | } |
6725bdbf | 1858 | else |
252b5132 RH |
1859 | { |
1860 | /* It's not one of our sections, so don't allocate space. */ | |
1861 | continue; | |
1862 | } | |
1863 | ||
6725bdbf | 1864 | if (s->_raw_size == 0) |
252b5132 | 1865 | { |
0ac8d2ca AM |
1866 | /* If we don't need this section, strip it from the |
1867 | output file. This is mostly to handle .rel.bss and | |
1868 | .rel.plt. We must create both sections in | |
1869 | create_dynamic_sections, because they must be created | |
1870 | before the linker maps input sections to output | |
1871 | sections. The linker does that before | |
1872 | adjust_dynamic_symbol is called, and it is that | |
1873 | function which decides whether anything needs to go | |
1874 | into these sections. */ | |
1875 | ||
7f8d5fc9 | 1876 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
1877 | continue; |
1878 | } | |
1879 | ||
f69da49f AM |
1880 | /* Allocate memory for the section contents. We use bfd_zalloc |
1881 | here in case unused entries are not reclaimed before the | |
1882 | section's contents are written out. This should not happen, | |
1883 | but this way if it does, we get a R_386_NONE reloc instead | |
1884 | of garbage. */ | |
55fd94b0 | 1885 | s->contents = bfd_zalloc (dynobj, s->_raw_size); |
6725bdbf | 1886 | if (s->contents == NULL) |
b34976b6 | 1887 | return FALSE; |
252b5132 RH |
1888 | } |
1889 | ||
ebe50bae | 1890 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
1891 | { |
1892 | /* Add some entries to the .dynamic section. We fill in the | |
1893 | values later, in elf_i386_finish_dynamic_sections, but we | |
1894 | must add the entries now so that we get the correct size for | |
1895 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1896 | dynamic linker and used by the debugger. */ | |
dc810e39 | 1897 | #define add_dynamic_entry(TAG, VAL) \ |
55fd94b0 | 1898 | bfd_elf32_add_dynamic_entry (info, (TAG), (VAL)) |
dc810e39 | 1899 | |
36af4a4e | 1900 | if (info->executable) |
252b5132 | 1901 | { |
dc810e39 | 1902 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 1903 | return FALSE; |
252b5132 RH |
1904 | } |
1905 | ||
6725bdbf | 1906 | if (htab->splt->_raw_size != 0) |
252b5132 | 1907 | { |
dc810e39 AM |
1908 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1909 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1910 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
1911 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 1912 | return FALSE; |
252b5132 RH |
1913 | } |
1914 | ||
1915 | if (relocs) | |
1916 | { | |
dc810e39 AM |
1917 | if (!add_dynamic_entry (DT_REL, 0) |
1918 | || !add_dynamic_entry (DT_RELSZ, 0) | |
1919 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 1920 | return FALSE; |
252b5132 | 1921 | |
0c715baa AM |
1922 | /* If any dynamic relocs apply to a read-only section, |
1923 | then we need a DT_TEXTREL entry. */ | |
248866a8 AM |
1924 | if ((info->flags & DF_TEXTREL) == 0) |
1925 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
1926 | (PTR) info); | |
0c715baa AM |
1927 | |
1928 | if ((info->flags & DF_TEXTREL) != 0) | |
1929 | { | |
1930 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 1931 | return FALSE; |
0c715baa | 1932 | } |
252b5132 RH |
1933 | } |
1934 | } | |
dc810e39 | 1935 | #undef add_dynamic_entry |
252b5132 | 1936 | |
b34976b6 | 1937 | return TRUE; |
252b5132 RH |
1938 | } |
1939 | ||
38701953 AM |
1940 | /* Set the correct type for an x86 ELF section. We do this by the |
1941 | section name, which is a hack, but ought to work. */ | |
1942 | ||
b34976b6 | 1943 | static bfd_boolean |
55fd94b0 AM |
1944 | elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
1945 | Elf_Internal_Shdr *hdr, | |
1946 | asection *sec) | |
38701953 AM |
1947 | { |
1948 | register const char *name; | |
1949 | ||
1950 | name = bfd_get_section_name (abfd, sec); | |
1951 | ||
1952 | /* This is an ugly, but unfortunately necessary hack that is | |
1953 | needed when producing EFI binaries on x86. It tells | |
1954 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
1955 | containing ELF relocation info. We need this hack in order to | |
1956 | be able to generate ELF binaries that can be translated into | |
1957 | EFI applications (which are essentially COFF objects). Those | |
1958 | files contain a COFF ".reloc" section inside an ELFNN object, | |
1959 | which would normally cause BFD to segfault because it would | |
1960 | attempt to interpret this section as containing relocation | |
1961 | entries for section "oc". With this hack enabled, ".reloc" | |
1962 | will be treated as a normal data section, which will avoid the | |
1963 | segfault. However, you won't be able to create an ELFNN binary | |
1964 | with a section named "oc" that needs relocations, but that's | |
1965 | the kind of ugly side-effects you get when detecting section | |
1966 | types based on their names... In practice, this limitation is | |
1967 | unlikely to bite. */ | |
1968 | if (strcmp (name, ".reloc") == 0) | |
1969 | hdr->sh_type = SHT_PROGBITS; | |
1970 | ||
b34976b6 | 1971 | return TRUE; |
38701953 AM |
1972 | } |
1973 | ||
13ae64f3 JJ |
1974 | /* Return the base VMA address which should be subtracted from real addresses |
1975 | when resolving @dtpoff relocation. | |
1976 | This is PT_TLS segment p_vaddr. */ | |
1977 | ||
1978 | static bfd_vma | |
55fd94b0 | 1979 | dtpoff_base (struct bfd_link_info *info) |
13ae64f3 | 1980 | { |
e1918d23 AM |
1981 | /* If tls_sec is NULL, we should have signalled an error already. */ |
1982 | if (elf_hash_table (info)->tls_sec == NULL) | |
6a30718d | 1983 | return 0; |
e1918d23 | 1984 | return elf_hash_table (info)->tls_sec->vma; |
13ae64f3 JJ |
1985 | } |
1986 | ||
1987 | /* Return the relocation value for @tpoff relocation | |
1988 | if STT_TLS virtual address is ADDRESS. */ | |
1989 | ||
1990 | static bfd_vma | |
55fd94b0 | 1991 | tpoff (struct bfd_link_info *info, bfd_vma address) |
13ae64f3 | 1992 | { |
e1918d23 | 1993 | struct elf_link_hash_table *htab = elf_hash_table (info); |
13ae64f3 | 1994 | |
e1918d23 AM |
1995 | /* If tls_sec is NULL, we should have signalled an error already. */ |
1996 | if (htab->tls_sec == NULL) | |
6a30718d | 1997 | return 0; |
e1918d23 | 1998 | return htab->tls_size + htab->tls_sec->vma - address; |
13ae64f3 JJ |
1999 | } |
2000 | ||
252b5132 RH |
2001 | /* Relocate an i386 ELF section. */ |
2002 | ||
b34976b6 | 2003 | static bfd_boolean |
55fd94b0 AM |
2004 | elf_i386_relocate_section (bfd *output_bfd, |
2005 | struct bfd_link_info *info, | |
2006 | bfd *input_bfd, | |
2007 | asection *input_section, | |
2008 | bfd_byte *contents, | |
2009 | Elf_Internal_Rela *relocs, | |
2010 | Elf_Internal_Sym *local_syms, | |
2011 | asection **local_sections) | |
252b5132 | 2012 | { |
6725bdbf | 2013 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2014 | Elf_Internal_Shdr *symtab_hdr; |
2015 | struct elf_link_hash_entry **sym_hashes; | |
2016 | bfd_vma *local_got_offsets; | |
252b5132 RH |
2017 | Elf_Internal_Rela *rel; |
2018 | Elf_Internal_Rela *relend; | |
2019 | ||
6725bdbf | 2020 | htab = elf_i386_hash_table (info); |
252b5132 RH |
2021 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
2022 | sym_hashes = elf_sym_hashes (input_bfd); | |
2023 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
2024 | ||
252b5132 RH |
2025 | rel = relocs; |
2026 | relend = relocs + input_section->reloc_count; | |
2027 | for (; rel < relend; rel++) | |
2028 | { | |
13ae64f3 | 2029 | unsigned int r_type; |
252b5132 RH |
2030 | reloc_howto_type *howto; |
2031 | unsigned long r_symndx; | |
2032 | struct elf_link_hash_entry *h; | |
2033 | Elf_Internal_Sym *sym; | |
2034 | asection *sec; | |
ffb2e45b | 2035 | bfd_vma off; |
252b5132 | 2036 | bfd_vma relocation; |
b34976b6 | 2037 | bfd_boolean unresolved_reloc; |
252b5132 | 2038 | bfd_reloc_status_type r; |
1b452ec6 | 2039 | unsigned int indx; |
13ae64f3 | 2040 | int tls_type; |
252b5132 RH |
2041 | |
2042 | r_type = ELF32_R_TYPE (rel->r_info); | |
55fd94b0 AM |
2043 | if (r_type == R_386_GNU_VTINHERIT |
2044 | || r_type == R_386_GNU_VTENTRY) | |
252b5132 | 2045 | continue; |
dc47f327 | 2046 | |
55fd94b0 | 2047 | if ((indx = r_type) >= R_386_standard |
13ae64f3 JJ |
2048 | && ((indx = r_type - R_386_ext_offset) - R_386_standard |
2049 | >= R_386_ext - R_386_standard) | |
2050 | && ((indx = r_type - R_386_tls_offset) - R_386_ext | |
2051 | >= R_386_tls - R_386_ext)) | |
252b5132 RH |
2052 | { |
2053 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 2054 | return FALSE; |
252b5132 | 2055 | } |
1b452ec6 | 2056 | howto = elf_howto_table + indx; |
252b5132 RH |
2057 | |
2058 | r_symndx = ELF32_R_SYM (rel->r_info); | |
2059 | ||
1049f94e | 2060 | if (info->relocatable) |
252b5132 | 2061 | { |
4a335f3d | 2062 | bfd_vma val; |
4a335f3d AM |
2063 | bfd_byte *where; |
2064 | ||
0ac8d2ca | 2065 | /* This is a relocatable link. We don't have to change |
252b5132 RH |
2066 | anything, unless the reloc is against a section symbol, |
2067 | in which case we have to adjust according to where the | |
2068 | section symbol winds up in the output section. */ | |
4a335f3d AM |
2069 | if (r_symndx >= symtab_hdr->sh_info) |
2070 | continue; | |
2071 | ||
2072 | sym = local_syms + r_symndx; | |
2073 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
2074 | continue; | |
2075 | ||
2076 | sec = local_sections[r_symndx]; | |
2077 | val = sec->output_offset; | |
2078 | if (val == 0) | |
2079 | continue; | |
2080 | ||
2081 | where = contents + rel->r_offset; | |
2082 | switch (howto->size) | |
252b5132 | 2083 | { |
16a10388 | 2084 | /* FIXME: overflow checks. */ |
4a335f3d | 2085 | case 0: |
16a10388 | 2086 | val += bfd_get_8 (input_bfd, where); |
4a335f3d | 2087 | bfd_put_8 (input_bfd, val, where); |
4a335f3d AM |
2088 | break; |
2089 | case 1: | |
16a10388 | 2090 | val += bfd_get_16 (input_bfd, where); |
4a335f3d | 2091 | bfd_put_16 (input_bfd, val, where); |
4a335f3d AM |
2092 | break; |
2093 | case 2: | |
2094 | val += bfd_get_32 (input_bfd, where); | |
2095 | bfd_put_32 (input_bfd, val, where); | |
2096 | break; | |
2097 | default: | |
2098 | abort (); | |
252b5132 | 2099 | } |
252b5132 RH |
2100 | continue; |
2101 | } | |
2102 | ||
2103 | /* This is a final link. */ | |
2104 | h = NULL; | |
2105 | sym = NULL; | |
2106 | sec = NULL; | |
b34976b6 | 2107 | unresolved_reloc = FALSE; |
252b5132 RH |
2108 | if (r_symndx < symtab_hdr->sh_info) |
2109 | { | |
2110 | sym = local_syms + r_symndx; | |
2111 | sec = local_sections[r_symndx]; | |
2112 | relocation = (sec->output_section->vma | |
2113 | + sec->output_offset | |
2114 | + sym->st_value); | |
f8df10f4 JJ |
2115 | if ((sec->flags & SEC_MERGE) |
2116 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
2117 | { | |
2118 | asection *msec; | |
2119 | bfd_vma addend; | |
4a335f3d | 2120 | bfd_byte *where = contents + rel->r_offset; |
f8df10f4 | 2121 | |
4a335f3d | 2122 | switch (howto->size) |
f8df10f4 | 2123 | { |
4a335f3d AM |
2124 | case 0: |
2125 | addend = bfd_get_8 (input_bfd, where); | |
2126 | if (howto->pc_relative) | |
2127 | { | |
2128 | addend = (addend ^ 0x80) - 0x80; | |
2129 | addend += 1; | |
2130 | } | |
2131 | break; | |
2132 | case 1: | |
2133 | addend = bfd_get_16 (input_bfd, where); | |
2134 | if (howto->pc_relative) | |
2135 | { | |
2136 | addend = (addend ^ 0x8000) - 0x8000; | |
2137 | addend += 2; | |
2138 | } | |
2139 | break; | |
2140 | case 2: | |
2141 | addend = bfd_get_32 (input_bfd, where); | |
2142 | if (howto->pc_relative) | |
2143 | { | |
2144 | addend = (addend ^ 0x80000000) - 0x80000000; | |
2145 | addend += 4; | |
2146 | } | |
2147 | break; | |
2148 | default: | |
2149 | abort (); | |
f8df10f4 JJ |
2150 | } |
2151 | ||
f8df10f4 | 2152 | msec = sec; |
4a335f3d AM |
2153 | addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); |
2154 | addend -= relocation; | |
f8df10f4 | 2155 | addend += msec->output_section->vma + msec->output_offset; |
4a335f3d AM |
2156 | |
2157 | switch (howto->size) | |
2158 | { | |
2159 | case 0: | |
16a10388 | 2160 | /* FIXME: overflow checks. */ |
4a335f3d AM |
2161 | if (howto->pc_relative) |
2162 | addend -= 1; | |
2163 | bfd_put_8 (input_bfd, addend, where); | |
4a335f3d AM |
2164 | break; |
2165 | case 1: | |
2166 | if (howto->pc_relative) | |
2167 | addend -= 2; | |
2168 | bfd_put_16 (input_bfd, addend, where); | |
4a335f3d AM |
2169 | break; |
2170 | case 2: | |
2171 | if (howto->pc_relative) | |
2172 | addend -= 4; | |
2173 | bfd_put_32 (input_bfd, addend, where); | |
2174 | break; | |
2175 | } | |
f8df10f4 | 2176 | } |
252b5132 RH |
2177 | } |
2178 | else | |
2179 | { | |
560e09e9 | 2180 | bfd_boolean warned; |
ffb2e45b | 2181 | |
560e09e9 | 2182 | RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx, symtab_hdr, relocation, sec, unresolved_reloc, info, warned); |
252b5132 RH |
2183 | } |
2184 | ||
2185 | switch (r_type) | |
2186 | { | |
2187 | case R_386_GOT32: | |
2188 | /* Relocation is to the entry for this symbol in the global | |
2189 | offset table. */ | |
ffb2e45b AM |
2190 | if (htab->sgot == NULL) |
2191 | abort (); | |
252b5132 RH |
2192 | |
2193 | if (h != NULL) | |
2194 | { | |
b34976b6 | 2195 | bfd_boolean dyn; |
252b5132 RH |
2196 | |
2197 | off = h->got.offset; | |
ebe50bae | 2198 | dyn = htab->elf.dynamic_sections_created; |
26e41594 | 2199 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
252b5132 | 2200 | || (info->shared |
586119b3 | 2201 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
ef5aade5 L |
2202 | || (ELF_ST_VISIBILITY (h->other) |
2203 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
2204 | { |
2205 | /* This is actually a static link, or it is a | |
2206 | -Bsymbolic link and the symbol is defined | |
2207 | locally, or the symbol was forced to be local | |
2208 | because of a version file. We must initialize | |
2209 | this entry in the global offset table. Since the | |
2210 | offset must always be a multiple of 4, we use the | |
2211 | least significant bit to record whether we have | |
2212 | initialized it already. | |
2213 | ||
2214 | When doing a dynamic link, we create a .rel.got | |
2215 | relocation entry to initialize the value. This | |
2216 | is done in the finish_dynamic_symbol routine. */ | |
2217 | if ((off & 1) != 0) | |
2218 | off &= ~1; | |
2219 | else | |
2220 | { | |
2221 | bfd_put_32 (output_bfd, relocation, | |
6725bdbf | 2222 | htab->sgot->contents + off); |
252b5132 RH |
2223 | h->got.offset |= 1; |
2224 | } | |
2225 | } | |
8c694914 | 2226 | else |
b34976b6 | 2227 | unresolved_reloc = FALSE; |
252b5132 RH |
2228 | } |
2229 | else | |
2230 | { | |
ffb2e45b AM |
2231 | if (local_got_offsets == NULL) |
2232 | abort (); | |
252b5132 RH |
2233 | |
2234 | off = local_got_offsets[r_symndx]; | |
2235 | ||
2236 | /* The offset must always be a multiple of 4. We use | |
83be169b AM |
2237 | the least significant bit to record whether we have |
2238 | already generated the necessary reloc. */ | |
252b5132 RH |
2239 | if ((off & 1) != 0) |
2240 | off &= ~1; | |
2241 | else | |
2242 | { | |
6725bdbf AM |
2243 | bfd_put_32 (output_bfd, relocation, |
2244 | htab->sgot->contents + off); | |
252b5132 RH |
2245 | |
2246 | if (info->shared) | |
2247 | { | |
947216bf AM |
2248 | asection *s; |
2249 | Elf_Internal_Rela outrel; | |
2250 | bfd_byte *loc; | |
252b5132 | 2251 | |
947216bf AM |
2252 | s = htab->srelgot; |
2253 | if (s == NULL) | |
ffb2e45b | 2254 | abort (); |
252b5132 | 2255 | |
6725bdbf AM |
2256 | outrel.r_offset = (htab->sgot->output_section->vma |
2257 | + htab->sgot->output_offset | |
252b5132 RH |
2258 | + off); |
2259 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
947216bf AM |
2260 | loc = s->contents; |
2261 | loc += s->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 2262 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2263 | } |
2264 | ||
2265 | local_got_offsets[r_symndx] |= 1; | |
2266 | } | |
252b5132 RH |
2267 | } |
2268 | ||
ffb2e45b AM |
2269 | if (off >= (bfd_vma) -2) |
2270 | abort (); | |
2271 | ||
2272 | relocation = htab->sgot->output_offset + off; | |
252b5132 RH |
2273 | break; |
2274 | ||
2275 | case R_386_GOTOFF: | |
2276 | /* Relocation is relative to the start of the global offset | |
2277 | table. */ | |
2278 | ||
252b5132 RH |
2279 | /* Note that sgot->output_offset is not involved in this |
2280 | calculation. We always want the start of .got. If we | |
2281 | defined _GLOBAL_OFFSET_TABLE in a different way, as is | |
2282 | permitted by the ABI, we might have to change this | |
2283 | calculation. */ | |
6725bdbf | 2284 | relocation -= htab->sgot->output_section->vma; |
252b5132 RH |
2285 | break; |
2286 | ||
2287 | case R_386_GOTPC: | |
2288 | /* Use global offset table as symbol value. */ | |
6725bdbf | 2289 | relocation = htab->sgot->output_section->vma; |
b34976b6 | 2290 | unresolved_reloc = FALSE; |
252b5132 RH |
2291 | break; |
2292 | ||
2293 | case R_386_PLT32: | |
2294 | /* Relocation is to the entry for this symbol in the | |
2295 | procedure linkage table. */ | |
2296 | ||
dd5724d5 | 2297 | /* Resolve a PLT32 reloc against a local symbol directly, |
83be169b | 2298 | without using the procedure linkage table. */ |
252b5132 RH |
2299 | if (h == NULL) |
2300 | break; | |
2301 | ||
dd5724d5 | 2302 | if (h->plt.offset == (bfd_vma) -1 |
6725bdbf | 2303 | || htab->splt == NULL) |
252b5132 RH |
2304 | { |
2305 | /* We didn't make a PLT entry for this symbol. This | |
83be169b AM |
2306 | happens when statically linking PIC code, or when |
2307 | using -Bsymbolic. */ | |
252b5132 RH |
2308 | break; |
2309 | } | |
2310 | ||
6725bdbf AM |
2311 | relocation = (htab->splt->output_section->vma |
2312 | + htab->splt->output_offset | |
252b5132 | 2313 | + h->plt.offset); |
b34976b6 | 2314 | unresolved_reloc = FALSE; |
252b5132 RH |
2315 | break; |
2316 | ||
2317 | case R_386_32: | |
2318 | case R_386_PC32: | |
ec338859 AM |
2319 | /* r_symndx will be zero only for relocs against symbols |
2320 | from removed linkonce sections, or sections discarded by | |
2321 | a linker script. */ | |
2322 | if (r_symndx == 0 | |
2323 | || (input_section->flags & SEC_ALLOC) == 0) | |
2324 | break; | |
2325 | ||
12d0ee4a | 2326 | if ((info->shared |
ef5aade5 L |
2327 | && (h == NULL |
2328 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2329 | || h->root.type != bfd_link_hash_undefweak) | |
12d0ee4a | 2330 | && (r_type != R_386_PC32 |
f6c52c13 | 2331 | || !SYMBOL_CALLS_LOCAL (info, h))) |
a23b6845 AM |
2332 | || (ELIMINATE_COPY_RELOCS |
2333 | && !info->shared | |
12d0ee4a AM |
2334 | && h != NULL |
2335 | && h->dynindx != -1 | |
2336 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
56882138 AM |
2337 | && (((h->elf_link_hash_flags |
2338 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
2339 | && (h->elf_link_hash_flags | |
2340 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
28d0b90e AM |
2341 | || h->root.type == bfd_link_hash_undefweak |
2342 | || h->root.type == bfd_link_hash_undefined))) | |
252b5132 | 2343 | { |
947216bf AM |
2344 | Elf_Internal_Rela outrel; |
2345 | bfd_byte *loc; | |
b34976b6 | 2346 | bfd_boolean skip, relocate; |
0c715baa | 2347 | asection *sreloc; |
252b5132 RH |
2348 | |
2349 | /* When generating a shared object, these relocations | |
2350 | are copied into the output file to be resolved at run | |
2351 | time. */ | |
2352 | ||
b34976b6 AM |
2353 | skip = FALSE; |
2354 | relocate = FALSE; | |
252b5132 | 2355 | |
c629eae0 JJ |
2356 | outrel.r_offset = |
2357 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2358 | rel->r_offset); | |
2359 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2360 | skip = TRUE; |
0bb2d96a | 2361 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2362 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
2363 | outrel.r_offset += (input_section->output_section->vma |
2364 | + input_section->output_offset); | |
2365 | ||
2366 | if (skip) | |
0bb2d96a | 2367 | memset (&outrel, 0, sizeof outrel); |
5a15f56f AM |
2368 | else if (h != NULL |
2369 | && h->dynindx != -1 | |
2370 | && (r_type == R_386_PC32 | |
2371 | || !info->shared | |
2372 | || !info->symbolic | |
2373 | || (h->elf_link_hash_flags | |
2374 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
0bb2d96a | 2375 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
2376 | else |
2377 | { | |
5a15f56f | 2378 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 2379 | relocate = TRUE; |
5a15f56f | 2380 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
252b5132 RH |
2381 | } |
2382 | ||
0c715baa AM |
2383 | sreloc = elf_section_data (input_section)->sreloc; |
2384 | if (sreloc == NULL) | |
2385 | abort (); | |
2386 | ||
947216bf AM |
2387 | loc = sreloc->contents; |
2388 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
0c715baa | 2389 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2390 | |
2391 | /* If this reloc is against an external symbol, we do | |
2392 | not want to fiddle with the addend. Otherwise, we | |
2393 | need to include the symbol value so that it becomes | |
2394 | an addend for the dynamic reloc. */ | |
2395 | if (! relocate) | |
2396 | continue; | |
2397 | } | |
252b5132 RH |
2398 | break; |
2399 | ||
37e55690 JJ |
2400 | case R_386_TLS_IE: |
2401 | if (info->shared) | |
2402 | { | |
947216bf AM |
2403 | Elf_Internal_Rela outrel; |
2404 | bfd_byte *loc; | |
37e55690 | 2405 | asection *sreloc; |
37e55690 JJ |
2406 | |
2407 | outrel.r_offset = rel->r_offset | |
2408 | + input_section->output_section->vma | |
2409 | + input_section->output_offset; | |
2410 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
2411 | sreloc = elf_section_data (input_section)->sreloc; | |
2412 | if (sreloc == NULL) | |
2413 | abort (); | |
947216bf AM |
2414 | loc = sreloc->contents; |
2415 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
2416 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2417 | } | |
2418 | /* Fall through */ | |
2419 | ||
13ae64f3 JJ |
2420 | case R_386_TLS_GD: |
2421 | case R_386_TLS_IE_32: | |
37e55690 | 2422 | case R_386_TLS_GOTIE: |
13ae64f3 JJ |
2423 | r_type = elf_i386_tls_transition (info, r_type, h == NULL); |
2424 | tls_type = GOT_UNKNOWN; | |
2425 | if (h == NULL && local_got_offsets) | |
2426 | tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx]; | |
2427 | else if (h != NULL) | |
2428 | { | |
2429 | tls_type = elf_i386_hash_entry(h)->tls_type; | |
37e55690 | 2430 | if (!info->shared && h->dynindx == -1 && (tls_type & GOT_TLS_IE)) |
13ae64f3 JJ |
2431 | r_type = R_386_TLS_LE_32; |
2432 | } | |
37e55690 JJ |
2433 | if (tls_type == GOT_TLS_IE) |
2434 | tls_type = GOT_TLS_IE_NEG; | |
2435 | if (r_type == R_386_TLS_GD) | |
2436 | { | |
2437 | if (tls_type == GOT_TLS_IE_POS) | |
2438 | r_type = R_386_TLS_GOTIE; | |
2439 | else if (tls_type & GOT_TLS_IE) | |
2440 | r_type = R_386_TLS_IE_32; | |
2441 | } | |
13ae64f3 JJ |
2442 | |
2443 | if (r_type == R_386_TLS_LE_32) | |
2444 | { | |
82e51918 | 2445 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
2446 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
2447 | { | |
2448 | unsigned int val, type; | |
2449 | bfd_vma roff; | |
2450 | ||
2451 | /* GD->LE transition. */ | |
2452 | BFD_ASSERT (rel->r_offset >= 2); | |
2453 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2454 | BFD_ASSERT (type == 0x8d || type == 0x04); | |
2455 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2456 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2457 | contents + rel->r_offset + 4) | |
2458 | == 0xe8); | |
2459 | BFD_ASSERT (rel + 1 < relend); | |
2460 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2461 | roff = rel->r_offset + 5; | |
2462 | val = bfd_get_8 (input_bfd, | |
2463 | contents + rel->r_offset - 1); | |
2464 | if (type == 0x04) | |
2465 | { | |
2466 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
2467 | Change it into: | |
2468 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2469 | (6 byte form of subl). */ | |
2470 | BFD_ASSERT (rel->r_offset >= 3); | |
2471 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2472 | contents + rel->r_offset - 3) | |
2473 | == 0x8d); | |
2474 | BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3)); | |
2475 | memcpy (contents + rel->r_offset - 3, | |
2476 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
2477 | } | |
2478 | else | |
2479 | { | |
2480 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2481 | if (rel->r_offset + 10 <= input_section->_raw_size | |
2482 | && bfd_get_8 (input_bfd, | |
2483 | contents + rel->r_offset + 9) == 0x90) | |
2484 | { | |
2485 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
2486 | Change it into: | |
2487 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2488 | (6 byte form of subl). */ | |
2489 | memcpy (contents + rel->r_offset - 2, | |
2490 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
2491 | roff = rel->r_offset + 6; | |
2492 | } | |
2493 | else | |
2494 | { | |
2495 | /* leal foo(%reg), %eax; call ___tls_get_addr | |
2496 | Change it into: | |
2497 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2498 | (5 byte form of subl). */ | |
2499 | memcpy (contents + rel->r_offset - 2, | |
2500 | "\x65\xa1\0\0\0\0\x2d\0\0\0", 11); | |
2501 | } | |
2502 | } | |
2503 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
2504 | contents + roff); | |
2505 | /* Skip R_386_PLT32. */ | |
2506 | rel++; | |
2507 | continue; | |
2508 | } | |
37e55690 | 2509 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE) |
13ae64f3 JJ |
2510 | { |
2511 | unsigned int val, type; | |
2512 | ||
2513 | /* IE->LE transition: | |
37e55690 JJ |
2514 | Originally it can be one of: |
2515 | movl foo, %eax | |
2516 | movl foo, %reg | |
2517 | addl foo, %reg | |
2518 | We change it into: | |
2519 | movl $foo, %eax | |
2520 | movl $foo, %reg | |
2521 | addl $foo, %reg. */ | |
2522 | BFD_ASSERT (rel->r_offset >= 1); | |
2523 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2524 | BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size); | |
37e55690 JJ |
2525 | if (val == 0xa1) |
2526 | { | |
2527 | /* movl foo, %eax. */ | |
55fd94b0 AM |
2528 | bfd_put_8 (output_bfd, 0xb8, |
2529 | contents + rel->r_offset - 1); | |
37e55690 | 2530 | } |
299bf759 | 2531 | else |
37e55690 | 2532 | { |
299bf759 | 2533 | BFD_ASSERT (rel->r_offset >= 2); |
55fd94b0 AM |
2534 | type = bfd_get_8 (input_bfd, |
2535 | contents + rel->r_offset - 2); | |
299bf759 | 2536 | switch (type) |
26e41594 | 2537 | { |
299bf759 L |
2538 | case 0x8b: |
2539 | /* movl */ | |
2540 | BFD_ASSERT ((val & 0xc7) == 0x05); | |
2541 | bfd_put_8 (output_bfd, 0xc7, | |
2542 | contents + rel->r_offset - 2); | |
2543 | bfd_put_8 (output_bfd, | |
2544 | 0xc0 | ((val >> 3) & 7), | |
2545 | contents + rel->r_offset - 1); | |
2546 | break; | |
2547 | case 0x03: | |
2548 | /* addl */ | |
2549 | BFD_ASSERT ((val & 0xc7) == 0x05); | |
2550 | bfd_put_8 (output_bfd, 0x81, | |
2551 | contents + rel->r_offset - 2); | |
2552 | bfd_put_8 (output_bfd, | |
2553 | 0xc0 | ((val >> 3) & 7), | |
2554 | contents + rel->r_offset - 1); | |
2555 | break; | |
2556 | default: | |
2557 | BFD_FAIL (); | |
2558 | break; | |
26e41594 | 2559 | } |
37e55690 | 2560 | } |
37e55690 JJ |
2561 | bfd_put_32 (output_bfd, -tpoff (info, relocation), |
2562 | contents + rel->r_offset); | |
2563 | continue; | |
2564 | } | |
2565 | else | |
2566 | { | |
2567 | unsigned int val, type; | |
2568 | ||
2569 | /* {IE_32,GOTIE}->LE transition: | |
2570 | Originally it can be one of: | |
13ae64f3 | 2571 | subl foo(%reg1), %reg2 |
13ae64f3 | 2572 | movl foo(%reg1), %reg2 |
37e55690 | 2573 | addl foo(%reg1), %reg2 |
13ae64f3 JJ |
2574 | We change it into: |
2575 | subl $foo, %reg2 | |
37e55690 JJ |
2576 | movl $foo, %reg2 (6 byte form) |
2577 | addl $foo, %reg2. */ | |
13ae64f3 JJ |
2578 | BFD_ASSERT (rel->r_offset >= 2); |
2579 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2580 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2581 | BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size); | |
37e55690 | 2582 | BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4); |
13ae64f3 JJ |
2583 | if (type == 0x8b) |
2584 | { | |
2585 | /* movl */ | |
13ae64f3 JJ |
2586 | bfd_put_8 (output_bfd, 0xc7, |
2587 | contents + rel->r_offset - 2); | |
2588 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
2589 | contents + rel->r_offset - 1); | |
2590 | } | |
2591 | else if (type == 0x2b) | |
2592 | { | |
2593 | /* subl */ | |
13ae64f3 JJ |
2594 | bfd_put_8 (output_bfd, 0x81, |
2595 | contents + rel->r_offset - 2); | |
2596 | bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), | |
2597 | contents + rel->r_offset - 1); | |
2598 | } | |
37e55690 JJ |
2599 | else if (type == 0x03) |
2600 | { | |
2601 | /* addl */ | |
2602 | bfd_put_8 (output_bfd, 0x81, | |
2603 | contents + rel->r_offset - 2); | |
2604 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
2605 | contents + rel->r_offset - 1); | |
2606 | } | |
13ae64f3 JJ |
2607 | else |
2608 | BFD_FAIL (); | |
37e55690 JJ |
2609 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE) |
2610 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
2611 | contents + rel->r_offset); | |
2612 | else | |
2613 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
2614 | contents + rel->r_offset); | |
13ae64f3 JJ |
2615 | continue; |
2616 | } | |
2617 | } | |
2618 | ||
2619 | if (htab->sgot == NULL) | |
2620 | abort (); | |
2621 | ||
2622 | if (h != NULL) | |
2623 | off = h->got.offset; | |
2624 | else | |
2625 | { | |
2626 | if (local_got_offsets == NULL) | |
2627 | abort (); | |
2628 | ||
2629 | off = local_got_offsets[r_symndx]; | |
2630 | } | |
2631 | ||
2632 | if ((off & 1) != 0) | |
2633 | off &= ~1; | |
26e41594 | 2634 | else |
13ae64f3 | 2635 | { |
947216bf AM |
2636 | Elf_Internal_Rela outrel; |
2637 | bfd_byte *loc; | |
13ae64f3 JJ |
2638 | int dr_type, indx; |
2639 | ||
2640 | if (htab->srelgot == NULL) | |
2641 | abort (); | |
2642 | ||
2643 | outrel.r_offset = (htab->sgot->output_section->vma | |
2644 | + htab->sgot->output_offset + off); | |
2645 | ||
13ae64f3 JJ |
2646 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
2647 | if (r_type == R_386_TLS_GD) | |
2648 | dr_type = R_386_TLS_DTPMOD32; | |
37e55690 JJ |
2649 | else if (tls_type == GOT_TLS_IE_POS) |
2650 | dr_type = R_386_TLS_TPOFF; | |
13ae64f3 JJ |
2651 | else |
2652 | dr_type = R_386_TLS_TPOFF32; | |
37e55690 JJ |
2653 | if (dr_type == R_386_TLS_TPOFF && indx == 0) |
2654 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
2655 | htab->sgot->contents + off); | |
2656 | else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) | |
c5c1f40c | 2657 | bfd_put_32 (output_bfd, dtpoff_base (info) - relocation, |
c366c25e JJ |
2658 | htab->sgot->contents + off); |
2659 | else | |
2660 | bfd_put_32 (output_bfd, 0, | |
2661 | htab->sgot->contents + off); | |
13ae64f3 | 2662 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
947216bf AM |
2663 | loc = htab->srelgot->contents; |
2664 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2665 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2666 | ||
2667 | if (r_type == R_386_TLS_GD) | |
2668 | { | |
2669 | if (indx == 0) | |
2670 | { | |
82e51918 | 2671 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
2672 | bfd_put_32 (output_bfd, |
2673 | relocation - dtpoff_base (info), | |
2674 | htab->sgot->contents + off + 4); | |
2675 | } | |
2676 | else | |
2677 | { | |
2678 | bfd_put_32 (output_bfd, 0, | |
2679 | htab->sgot->contents + off + 4); | |
2680 | outrel.r_info = ELF32_R_INFO (indx, | |
2681 | R_386_TLS_DTPOFF32); | |
2682 | outrel.r_offset += 4; | |
2683 | htab->srelgot->reloc_count++; | |
947216bf AM |
2684 | loc += sizeof (Elf32_External_Rel); |
2685 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
13ae64f3 JJ |
2686 | } |
2687 | } | |
37e55690 JJ |
2688 | else if (tls_type == GOT_TLS_IE_BOTH) |
2689 | { | |
2690 | bfd_put_32 (output_bfd, | |
2691 | indx == 0 ? relocation - dtpoff_base (info) : 0, | |
2692 | htab->sgot->contents + off + 4); | |
2693 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
2694 | outrel.r_offset += 4; | |
2695 | htab->srelgot->reloc_count++; | |
947216bf | 2696 | loc += sizeof (Elf32_External_Rel); |
37e55690 JJ |
2697 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2698 | } | |
13ae64f3 JJ |
2699 | |
2700 | if (h != NULL) | |
2701 | h->got.offset |= 1; | |
2702 | else | |
2703 | local_got_offsets[r_symndx] |= 1; | |
2704 | } | |
2705 | ||
2706 | if (off >= (bfd_vma) -2) | |
2707 | abort (); | |
2708 | if (r_type == ELF32_R_TYPE (rel->r_info)) | |
2709 | { | |
2710 | relocation = htab->sgot->output_offset + off; | |
37e55690 JJ |
2711 | if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) |
2712 | && tls_type == GOT_TLS_IE_BOTH) | |
2713 | relocation += 4; | |
2714 | if (r_type == R_386_TLS_IE) | |
2715 | relocation += htab->sgot->output_section->vma; | |
b34976b6 | 2716 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
2717 | } |
2718 | else | |
2719 | { | |
2720 | unsigned int val, type; | |
2721 | bfd_vma roff; | |
2722 | ||
2723 | /* GD->IE transition. */ | |
2724 | BFD_ASSERT (rel->r_offset >= 2); | |
2725 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); | |
2726 | BFD_ASSERT (type == 0x8d || type == 0x04); | |
2727 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2728 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) | |
2729 | == 0xe8); | |
2730 | BFD_ASSERT (rel + 1 < relend); | |
2731 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2732 | roff = rel->r_offset - 3; | |
2733 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2734 | if (type == 0x04) | |
2735 | { | |
2736 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
2737 | Change it into: | |
2738 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
2739 | BFD_ASSERT (rel->r_offset >= 3); | |
2740 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2741 | contents + rel->r_offset - 3) | |
2742 | == 0x8d); | |
2743 | BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3)); | |
2744 | val >>= 3; | |
2745 | } | |
2746 | else | |
2747 | { | |
2748 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
2749 | Change it into: | |
2750 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
2751 | BFD_ASSERT (rel->r_offset + 10 <= input_section->_raw_size); | |
2752 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2753 | BFD_ASSERT (bfd_get_8 (input_bfd, | |
2754 | contents + rel->r_offset + 9) | |
2755 | == 0x90); | |
2756 | roff = rel->r_offset - 2; | |
2757 | } | |
2758 | memcpy (contents + roff, | |
2759 | "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); | |
2760 | contents[roff + 7] = 0x80 | (val & 7); | |
37e55690 JJ |
2761 | /* If foo is used only with foo@gotntpoff(%reg) and |
2762 | foo@indntpoff, but not with foo@gottpoff(%reg), change | |
2763 | subl $foo@gottpoff(%reg), %eax | |
2764 | into: | |
2765 | addl $foo@gotntpoff(%reg), %eax. */ | |
2766 | if (r_type == R_386_TLS_GOTIE) | |
2767 | { | |
2768 | contents[roff + 6] = 0x03; | |
2769 | if (tls_type == GOT_TLS_IE_BOTH) | |
2770 | off += 4; | |
2771 | } | |
13ae64f3 JJ |
2772 | bfd_put_32 (output_bfd, htab->sgot->output_offset + off, |
2773 | contents + roff + 8); | |
2774 | /* Skip R_386_PLT32. */ | |
2775 | rel++; | |
2776 | continue; | |
2777 | } | |
2778 | break; | |
2779 | ||
2780 | case R_386_TLS_LDM: | |
2781 | if (! info->shared) | |
2782 | { | |
2783 | unsigned int val; | |
2784 | ||
2785 | /* LD->LE transition: | |
2786 | Ensure it is: | |
2787 | leal foo(%reg), %eax; call ___tls_get_addr. | |
2788 | We change it into: | |
2789 | movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */ | |
2790 | BFD_ASSERT (rel->r_offset >= 2); | |
2791 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2) | |
2792 | == 0x8d); | |
2793 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
2794 | BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); | |
2795 | BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size); | |
2796 | BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) | |
2797 | == 0xe8); | |
2798 | BFD_ASSERT (rel + 1 < relend); | |
2799 | BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
2800 | memcpy (contents + rel->r_offset - 2, | |
2801 | "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); | |
2802 | /* Skip R_386_PLT32. */ | |
2803 | rel++; | |
2804 | continue; | |
2805 | } | |
2806 | ||
2807 | if (htab->sgot == NULL) | |
2808 | abort (); | |
2809 | ||
2810 | off = htab->tls_ldm_got.offset; | |
2811 | if (off & 1) | |
2812 | off &= ~1; | |
2813 | else | |
2814 | { | |
947216bf AM |
2815 | Elf_Internal_Rela outrel; |
2816 | bfd_byte *loc; | |
13ae64f3 JJ |
2817 | |
2818 | if (htab->srelgot == NULL) | |
2819 | abort (); | |
2820 | ||
2821 | outrel.r_offset = (htab->sgot->output_section->vma | |
2822 | + htab->sgot->output_offset + off); | |
2823 | ||
2824 | bfd_put_32 (output_bfd, 0, | |
2825 | htab->sgot->contents + off); | |
2826 | bfd_put_32 (output_bfd, 0, | |
2827 | htab->sgot->contents + off + 4); | |
2828 | outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); | |
947216bf AM |
2829 | loc = htab->srelgot->contents; |
2830 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2831 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2832 | htab->tls_ldm_got.offset |= 1; | |
2833 | } | |
2834 | relocation = htab->sgot->output_offset + off; | |
b34976b6 | 2835 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
2836 | break; |
2837 | ||
2838 | case R_386_TLS_LDO_32: | |
a45bb67d | 2839 | if (info->shared || (input_section->flags & SEC_CODE) == 0) |
13ae64f3 JJ |
2840 | relocation -= dtpoff_base (info); |
2841 | else | |
2842 | /* When converting LDO to LE, we must negate. */ | |
2843 | relocation = -tpoff (info, relocation); | |
2844 | break; | |
2845 | ||
2846 | case R_386_TLS_LE_32: | |
13ae64f3 | 2847 | case R_386_TLS_LE: |
37e55690 JJ |
2848 | if (info->shared) |
2849 | { | |
947216bf | 2850 | Elf_Internal_Rela outrel; |
37e55690 | 2851 | asection *sreloc; |
947216bf | 2852 | bfd_byte *loc; |
37e55690 JJ |
2853 | int indx; |
2854 | ||
2855 | outrel.r_offset = rel->r_offset | |
2856 | + input_section->output_section->vma | |
2857 | + input_section->output_offset; | |
2858 | if (h != NULL && h->dynindx != -1) | |
2859 | indx = h->dynindx; | |
2860 | else | |
2861 | indx = 0; | |
2862 | if (r_type == R_386_TLS_LE_32) | |
2863 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); | |
2864 | else | |
2865 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
2866 | sreloc = elf_section_data (input_section)->sreloc; | |
2867 | if (sreloc == NULL) | |
2868 | abort (); | |
947216bf AM |
2869 | loc = sreloc->contents; |
2870 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
2871 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2872 | if (indx) | |
2873 | continue; | |
2874 | else if (r_type == R_386_TLS_LE_32) | |
2875 | relocation = dtpoff_base (info) - relocation; | |
2876 | else | |
2877 | relocation -= dtpoff_base (info); | |
2878 | } | |
2879 | else if (r_type == R_386_TLS_LE_32) | |
2880 | relocation = tpoff (info, relocation); | |
2881 | else | |
2882 | relocation = -tpoff (info, relocation); | |
13ae64f3 JJ |
2883 | break; |
2884 | ||
252b5132 RH |
2885 | default: |
2886 | break; | |
2887 | } | |
2888 | ||
239e1f3a AM |
2889 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
2890 | because such sections are not SEC_ALLOC and thus ld.so will | |
2891 | not process them. */ | |
8c694914 | 2892 | if (unresolved_reloc |
239e1f3a | 2893 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
8c694914 | 2894 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) |
6a30718d JJ |
2895 | { |
2896 | (*_bfd_error_handler) | |
2897 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), | |
2898 | bfd_archive_filename (input_bfd), | |
2899 | bfd_get_section_name (input_bfd, input_section), | |
2900 | (long) rel->r_offset, | |
2901 | h->root.root.string); | |
b34976b6 | 2902 | return FALSE; |
6a30718d | 2903 | } |
83be169b | 2904 | |
252b5132 RH |
2905 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
2906 | contents, rel->r_offset, | |
55fd94b0 | 2907 | relocation, 0); |
252b5132 | 2908 | |
cf5c0c5b | 2909 | if (r != bfd_reloc_ok) |
252b5132 | 2910 | { |
cf5c0c5b | 2911 | const char *name; |
ffb2e45b | 2912 | |
cf5c0c5b AM |
2913 | if (h != NULL) |
2914 | name = h->root.root.string; | |
2915 | else | |
2916 | { | |
2917 | name = bfd_elf_string_from_elf_section (input_bfd, | |
2918 | symtab_hdr->sh_link, | |
2919 | sym->st_name); | |
2920 | if (name == NULL) | |
b34976b6 | 2921 | return FALSE; |
cf5c0c5b AM |
2922 | if (*name == '\0') |
2923 | name = bfd_section_name (input_bfd, sec); | |
2924 | } | |
ffb2e45b | 2925 | |
cf5c0c5b AM |
2926 | if (r == bfd_reloc_overflow) |
2927 | { | |
cf5c0c5b | 2928 | if (! ((*info->callbacks->reloc_overflow) |
55fd94b0 | 2929 | (info, name, howto->name, 0, |
cf5c0c5b | 2930 | input_bfd, input_section, rel->r_offset))) |
b34976b6 | 2931 | return FALSE; |
cf5c0c5b AM |
2932 | } |
2933 | else | |
2934 | { | |
2935 | (*_bfd_error_handler) | |
2936 | (_("%s(%s+0x%lx): reloc against `%s': error %d"), | |
2937 | bfd_archive_filename (input_bfd), | |
2938 | bfd_get_section_name (input_bfd, input_section), | |
2939 | (long) rel->r_offset, name, (int) r); | |
b34976b6 | 2940 | return FALSE; |
cf5c0c5b | 2941 | } |
252b5132 RH |
2942 | } |
2943 | } | |
2944 | ||
b34976b6 | 2945 | return TRUE; |
252b5132 RH |
2946 | } |
2947 | ||
2948 | /* Finish up dynamic symbol handling. We set the contents of various | |
2949 | dynamic sections here. */ | |
2950 | ||
b34976b6 | 2951 | static bfd_boolean |
55fd94b0 AM |
2952 | elf_i386_finish_dynamic_symbol (bfd *output_bfd, |
2953 | struct bfd_link_info *info, | |
2954 | struct elf_link_hash_entry *h, | |
2955 | Elf_Internal_Sym *sym) | |
252b5132 | 2956 | { |
6725bdbf | 2957 | struct elf_i386_link_hash_table *htab; |
252b5132 | 2958 | |
6725bdbf | 2959 | htab = elf_i386_hash_table (info); |
252b5132 RH |
2960 | |
2961 | if (h->plt.offset != (bfd_vma) -1) | |
2962 | { | |
252b5132 RH |
2963 | bfd_vma plt_index; |
2964 | bfd_vma got_offset; | |
947216bf AM |
2965 | Elf_Internal_Rela rel; |
2966 | bfd_byte *loc; | |
252b5132 RH |
2967 | |
2968 | /* This symbol has an entry in the procedure linkage table. Set | |
2969 | it up. */ | |
2970 | ||
ffb2e45b AM |
2971 | if (h->dynindx == -1 |
2972 | || htab->splt == NULL | |
2973 | || htab->sgotplt == NULL | |
2974 | || htab->srelplt == NULL) | |
2975 | abort (); | |
252b5132 RH |
2976 | |
2977 | /* Get the index in the procedure linkage table which | |
2978 | corresponds to this symbol. This is the index of this symbol | |
2979 | in all the symbols for which we are making plt entries. The | |
2980 | first entry in the procedure linkage table is reserved. */ | |
2981 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
2982 | ||
2983 | /* Get the offset into the .got table of the entry that | |
2984 | corresponds to this function. Each .got entry is 4 bytes. | |
2985 | The first three are reserved. */ | |
2986 | got_offset = (plt_index + 3) * 4; | |
2987 | ||
2988 | /* Fill in the entry in the procedure linkage table. */ | |
2989 | if (! info->shared) | |
2990 | { | |
6725bdbf | 2991 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry, |
252b5132 RH |
2992 | PLT_ENTRY_SIZE); |
2993 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
2994 | (htab->sgotplt->output_section->vma |
2995 | + htab->sgotplt->output_offset | |
252b5132 | 2996 | + got_offset), |
6725bdbf | 2997 | htab->splt->contents + h->plt.offset + 2); |
252b5132 RH |
2998 | } |
2999 | else | |
3000 | { | |
6725bdbf | 3001 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry, |
252b5132 RH |
3002 | PLT_ENTRY_SIZE); |
3003 | bfd_put_32 (output_bfd, got_offset, | |
6725bdbf | 3004 | htab->splt->contents + h->plt.offset + 2); |
252b5132 RH |
3005 | } |
3006 | ||
3007 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel), | |
6725bdbf | 3008 | htab->splt->contents + h->plt.offset + 7); |
252b5132 | 3009 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), |
6725bdbf | 3010 | htab->splt->contents + h->plt.offset + 12); |
252b5132 RH |
3011 | |
3012 | /* Fill in the entry in the global offset table. */ | |
3013 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
3014 | (htab->splt->output_section->vma |
3015 | + htab->splt->output_offset | |
252b5132 RH |
3016 | + h->plt.offset |
3017 | + 6), | |
6725bdbf | 3018 | htab->sgotplt->contents + got_offset); |
252b5132 RH |
3019 | |
3020 | /* Fill in the entry in the .rel.plt section. */ | |
6725bdbf AM |
3021 | rel.r_offset = (htab->sgotplt->output_section->vma |
3022 | + htab->sgotplt->output_offset | |
252b5132 RH |
3023 | + got_offset); |
3024 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); | |
947216bf | 3025 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel); |
0ac8d2ca | 3026 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3027 | |
3028 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
3029 | { | |
3030 | /* Mark the symbol as undefined, rather than as defined in | |
c6585bbb JJ |
3031 | the .plt section. Leave the value if there were any |
3032 | relocations where pointer equality matters (this is a clue | |
51b64d56 AM |
3033 | for the dynamic linker, to make function pointer |
3034 | comparisons work between an application and shared | |
c6585bbb JJ |
3035 | library), otherwise set it to zero. If a function is only |
3036 | called from a binary, there is no need to slow down | |
3037 | shared libraries because of that. */ | |
252b5132 | 3038 | sym->st_shndx = SHN_UNDEF; |
c6585bbb JJ |
3039 | if ((h->elf_link_hash_flags & ELF_LINK_POINTER_EQUALITY_NEEDED) == 0) |
3040 | sym->st_value = 0; | |
252b5132 RH |
3041 | } |
3042 | } | |
3043 | ||
13ae64f3 JJ |
3044 | if (h->got.offset != (bfd_vma) -1 |
3045 | && elf_i386_hash_entry(h)->tls_type != GOT_TLS_GD | |
37e55690 | 3046 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0) |
252b5132 | 3047 | { |
947216bf AM |
3048 | Elf_Internal_Rela rel; |
3049 | bfd_byte *loc; | |
252b5132 RH |
3050 | |
3051 | /* This symbol has an entry in the global offset table. Set it | |
3052 | up. */ | |
3053 | ||
ffb2e45b AM |
3054 | if (htab->sgot == NULL || htab->srelgot == NULL) |
3055 | abort (); | |
252b5132 | 3056 | |
6725bdbf AM |
3057 | rel.r_offset = (htab->sgot->output_section->vma |
3058 | + htab->sgot->output_offset | |
dc810e39 | 3059 | + (h->got.offset & ~(bfd_vma) 1)); |
252b5132 | 3060 | |
dd5724d5 AM |
3061 | /* If this is a static link, or it is a -Bsymbolic link and the |
3062 | symbol is defined locally or was forced to be local because | |
3063 | of a version file, we just want to emit a RELATIVE reloc. | |
252b5132 RH |
3064 | The entry in the global offset table will already have been |
3065 | initialized in the relocate_section function. */ | |
6725bdbf | 3066 | if (info->shared |
586119b3 | 3067 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
dd5724d5 | 3068 | { |
6725bdbf | 3069 | BFD_ASSERT((h->got.offset & 1) != 0); |
dd5724d5 AM |
3070 | rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
3071 | } | |
252b5132 RH |
3072 | else |
3073 | { | |
dd5724d5 | 3074 | BFD_ASSERT((h->got.offset & 1) == 0); |
6725bdbf AM |
3075 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
3076 | htab->sgot->contents + h->got.offset); | |
252b5132 RH |
3077 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); |
3078 | } | |
3079 | ||
947216bf AM |
3080 | loc = htab->srelgot->contents; |
3081 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3082 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3083 | } |
3084 | ||
791987af | 3085 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
252b5132 | 3086 | { |
947216bf AM |
3087 | Elf_Internal_Rela rel; |
3088 | bfd_byte *loc; | |
252b5132 RH |
3089 | |
3090 | /* This symbol needs a copy reloc. Set it up. */ | |
3091 | ||
ffb2e45b AM |
3092 | if (h->dynindx == -1 |
3093 | || (h->root.type != bfd_link_hash_defined | |
3094 | && h->root.type != bfd_link_hash_defweak) | |
3095 | || htab->srelbss == NULL) | |
3096 | abort (); | |
252b5132 RH |
3097 | |
3098 | rel.r_offset = (h->root.u.def.value | |
3099 | + h->root.u.def.section->output_section->vma | |
3100 | + h->root.u.def.section->output_offset); | |
3101 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); | |
947216bf AM |
3102 | loc = htab->srelbss->contents; |
3103 | loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3104 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3105 | } |
3106 | ||
3107 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
3108 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
3109 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
3110 | sym->st_shndx = SHN_ABS; | |
3111 | ||
b34976b6 | 3112 | return TRUE; |
252b5132 RH |
3113 | } |
3114 | ||
38701953 AM |
3115 | /* Used to decide how to sort relocs in an optimal manner for the |
3116 | dynamic linker, before writing them out. */ | |
3117 | ||
3118 | static enum elf_reloc_type_class | |
55fd94b0 | 3119 | elf_i386_reloc_type_class (const Elf_Internal_Rela *rela) |
38701953 | 3120 | { |
55fd94b0 | 3121 | switch (ELF32_R_TYPE (rela->r_info)) |
38701953 AM |
3122 | { |
3123 | case R_386_RELATIVE: | |
3124 | return reloc_class_relative; | |
3125 | case R_386_JUMP_SLOT: | |
3126 | return reloc_class_plt; | |
3127 | case R_386_COPY: | |
3128 | return reloc_class_copy; | |
3129 | default: | |
3130 | return reloc_class_normal; | |
3131 | } | |
3132 | } | |
3133 | ||
252b5132 RH |
3134 | /* Finish up the dynamic sections. */ |
3135 | ||
b34976b6 | 3136 | static bfd_boolean |
55fd94b0 AM |
3137 | elf_i386_finish_dynamic_sections (bfd *output_bfd, |
3138 | struct bfd_link_info *info) | |
252b5132 | 3139 | { |
6725bdbf | 3140 | struct elf_i386_link_hash_table *htab; |
252b5132 | 3141 | bfd *dynobj; |
252b5132 RH |
3142 | asection *sdyn; |
3143 | ||
6725bdbf | 3144 | htab = elf_i386_hash_table (info); |
ebe50bae | 3145 | dynobj = htab->elf.dynobj; |
252b5132 RH |
3146 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
3147 | ||
ebe50bae | 3148 | if (htab->elf.dynamic_sections_created) |
252b5132 | 3149 | { |
252b5132 RH |
3150 | Elf32_External_Dyn *dyncon, *dynconend; |
3151 | ||
ffb2e45b AM |
3152 | if (sdyn == NULL || htab->sgot == NULL) |
3153 | abort (); | |
252b5132 RH |
3154 | |
3155 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
3156 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
3157 | for (; dyncon < dynconend; dyncon++) | |
3158 | { | |
3159 | Elf_Internal_Dyn dyn; | |
51b64d56 | 3160 | asection *s; |
252b5132 RH |
3161 | |
3162 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
3163 | ||
3164 | switch (dyn.d_tag) | |
3165 | { | |
3166 | default: | |
0ac8d2ca | 3167 | continue; |
252b5132 RH |
3168 | |
3169 | case DT_PLTGOT: | |
6725bdbf | 3170 | dyn.d_un.d_ptr = htab->sgot->output_section->vma; |
6725bdbf AM |
3171 | break; |
3172 | ||
252b5132 | 3173 | case DT_JMPREL: |
6348e046 AM |
3174 | s = htab->srelplt; |
3175 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
252b5132 RH |
3176 | break; |
3177 | ||
3178 | case DT_PLTRELSZ: | |
6348e046 AM |
3179 | s = htab->srelplt; |
3180 | dyn.d_un.d_val = s->_raw_size; | |
252b5132 RH |
3181 | break; |
3182 | ||
3183 | case DT_RELSZ: | |
3184 | /* My reading of the SVR4 ABI indicates that the | |
3185 | procedure linkage table relocs (DT_JMPREL) should be | |
3186 | included in the overall relocs (DT_REL). This is | |
3187 | what Solaris does. However, UnixWare can not handle | |
3188 | that case. Therefore, we override the DT_RELSZ entry | |
6348e046 AM |
3189 | here to make it not include the JMPREL relocs. */ |
3190 | s = htab->srelplt; | |
3191 | if (s == NULL) | |
3192 | continue; | |
3193 | dyn.d_un.d_val -= s->_raw_size; | |
3194 | break; | |
3195 | ||
3196 | case DT_REL: | |
3197 | /* We may not be using the standard ELF linker script. | |
3198 | If .rel.plt is the first .rel section, we adjust | |
3199 | DT_REL to not include it. */ | |
3200 | s = htab->srelplt; | |
3201 | if (s == NULL) | |
3202 | continue; | |
3203 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
3204 | continue; | |
3205 | dyn.d_un.d_ptr += s->_raw_size; | |
252b5132 RH |
3206 | break; |
3207 | } | |
0ac8d2ca AM |
3208 | |
3209 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
3210 | } |
3211 | ||
3212 | /* Fill in the first entry in the procedure linkage table. */ | |
6725bdbf | 3213 | if (htab->splt && htab->splt->_raw_size > 0) |
252b5132 RH |
3214 | { |
3215 | if (info->shared) | |
6725bdbf AM |
3216 | memcpy (htab->splt->contents, |
3217 | elf_i386_pic_plt0_entry, PLT_ENTRY_SIZE); | |
252b5132 RH |
3218 | else |
3219 | { | |
6725bdbf AM |
3220 | memcpy (htab->splt->contents, |
3221 | elf_i386_plt0_entry, PLT_ENTRY_SIZE); | |
252b5132 | 3222 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3223 | (htab->sgotplt->output_section->vma |
3224 | + htab->sgotplt->output_offset | |
3225 | + 4), | |
3226 | htab->splt->contents + 2); | |
252b5132 | 3227 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3228 | (htab->sgotplt->output_section->vma |
3229 | + htab->sgotplt->output_offset | |
3230 | + 8), | |
3231 | htab->splt->contents + 8); | |
252b5132 RH |
3232 | } |
3233 | ||
3234 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
3235 | really seem like the right value. */ | |
6725bdbf AM |
3236 | elf_section_data (htab->splt->output_section) |
3237 | ->this_hdr.sh_entsize = 4; | |
252b5132 RH |
3238 | } |
3239 | } | |
3240 | ||
12d0ee4a | 3241 | if (htab->sgotplt) |
252b5132 | 3242 | { |
12d0ee4a AM |
3243 | /* Fill in the first three entries in the global offset table. */ |
3244 | if (htab->sgotplt->_raw_size > 0) | |
3245 | { | |
3246 | bfd_put_32 (output_bfd, | |
55fd94b0 | 3247 | (sdyn == NULL ? 0 |
12d0ee4a AM |
3248 | : sdyn->output_section->vma + sdyn->output_offset), |
3249 | htab->sgotplt->contents); | |
55fd94b0 AM |
3250 | bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 4); |
3251 | bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 8); | |
12d0ee4a | 3252 | } |
252b5132 | 3253 | |
12d0ee4a AM |
3254 | elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4; |
3255 | } | |
b34976b6 | 3256 | return TRUE; |
252b5132 RH |
3257 | } |
3258 | ||
3259 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vec | |
3260 | #define TARGET_LITTLE_NAME "elf32-i386" | |
3261 | #define ELF_ARCH bfd_arch_i386 | |
3262 | #define ELF_MACHINE_CODE EM_386 | |
3263 | #define ELF_MAXPAGESIZE 0x1000 | |
252b5132 RH |
3264 | |
3265 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 3266 | #define elf_backend_can_refcount 1 |
252b5132 RH |
3267 | #define elf_backend_want_got_plt 1 |
3268 | #define elf_backend_plt_readonly 1 | |
3269 | #define elf_backend_want_plt_sym 0 | |
3270 | #define elf_backend_got_header_size 12 | |
252b5132 | 3271 | |
8c29f035 AM |
3272 | /* Support RELA for objdump of prelink objects. */ |
3273 | #define elf_info_to_howto elf_i386_info_to_howto_rel | |
dd5724d5 AM |
3274 | #define elf_info_to_howto_rel elf_i386_info_to_howto_rel |
3275 | ||
13ae64f3 | 3276 | #define bfd_elf32_mkobject elf_i386_mkobject |
13ae64f3 | 3277 | |
dd5724d5 AM |
3278 | #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name |
3279 | #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create | |
3280 | #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup | |
3281 | ||
3282 | #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol | |
3283 | #define elf_backend_check_relocs elf_i386_check_relocs | |
0ac8d2ca | 3284 | #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol |
6725bdbf | 3285 | #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections |
0ac8d2ca | 3286 | #define elf_backend_fake_sections elf_i386_fake_sections |
dd5724d5 AM |
3287 | #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections |
3288 | #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol | |
3289 | #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook | |
3290 | #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook | |
c5fccbec DJ |
3291 | #define elf_backend_grok_prstatus elf_i386_grok_prstatus |
3292 | #define elf_backend_grok_psinfo elf_i386_grok_psinfo | |
db6751f2 | 3293 | #define elf_backend_reloc_type_class elf_i386_reloc_type_class |
0ac8d2ca AM |
3294 | #define elf_backend_relocate_section elf_i386_relocate_section |
3295 | #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections | |
dd5724d5 | 3296 | |
252b5132 | 3297 | #include "elf32-target.h" |
2bc3c89a AM |
3298 | |
3299 | /* FreeBSD support. */ | |
3300 | ||
3301 | #undef TARGET_LITTLE_SYM | |
3302 | #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec | |
3303 | #undef TARGET_LITTLE_NAME | |
3304 | #define TARGET_LITTLE_NAME "elf32-i386-freebsd" | |
3305 | ||
3306 | /* The kernel recognizes executables as valid only if they carry a | |
3307 | "FreeBSD" label in the ELF header. So we put this label on all | |
3308 | executables and (for simplicity) also all other object files. */ | |
3309 | ||
2bc3c89a | 3310 | static void |
55fd94b0 AM |
3311 | elf_i386_post_process_headers (bfd *abfd, |
3312 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
2bc3c89a AM |
3313 | { |
3314 | Elf_Internal_Ehdr *i_ehdrp; | |
3315 | ||
3316 | i_ehdrp = elf_elfheader (abfd); | |
3317 | ||
3318 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
3319 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; | |
3320 | #ifdef OLD_FREEBSD_ABI_LABEL | |
3321 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
3322 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
caf47ea6 | 3323 | #endif |
2bc3c89a AM |
3324 | } |
3325 | ||
3326 | #undef elf_backend_post_process_headers | |
571fe01f NC |
3327 | #define elf_backend_post_process_headers elf_i386_post_process_headers |
3328 | #undef elf32_bed | |
3329 | #define elf32_bed elf32_i386_fbsd_bed | |
2bc3c89a AM |
3330 | |
3331 | #include "elf32-target.h" |