Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Intel 80386/80486-specific support for 32-bit ELF |
b2a8e766 | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
0ffa91dd | 3 | 2003, 2004, 2005, 2006, 2007, 2008 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 | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
571fe01f | 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 | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
252b5132 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
252b5132 RH |
24 | #include "bfdlink.h" |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
eac338cf | 27 | #include "elf-vxworks.h" |
142411ca | 28 | #include "bfd_stdint.h" |
252b5132 | 29 | |
55fd94b0 AM |
30 | /* 386 uses REL relocations instead of RELA. */ |
31 | #define USE_REL 1 | |
252b5132 RH |
32 | |
33 | #include "elf/i386.h" | |
34 | ||
35 | static reloc_howto_type elf_howto_table[]= | |
36 | { | |
b34976b6 | 37 | HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield, |
1b452ec6 | 38 | bfd_elf_generic_reloc, "R_386_NONE", |
b34976b6 AM |
39 | TRUE, 0x00000000, 0x00000000, FALSE), |
40 | HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 41 | bfd_elf_generic_reloc, "R_386_32", |
b34976b6 AM |
42 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
43 | HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 44 | bfd_elf_generic_reloc, "R_386_PC32", |
b34976b6 AM |
45 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
46 | HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 47 | bfd_elf_generic_reloc, "R_386_GOT32", |
b34976b6 AM |
48 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
49 | HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 50 | bfd_elf_generic_reloc, "R_386_PLT32", |
b34976b6 AM |
51 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
52 | HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 53 | bfd_elf_generic_reloc, "R_386_COPY", |
b34976b6 AM |
54 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
55 | HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 56 | bfd_elf_generic_reloc, "R_386_GLOB_DAT", |
b34976b6 AM |
57 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
58 | HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 59 | bfd_elf_generic_reloc, "R_386_JUMP_SLOT", |
b34976b6 AM |
60 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
61 | HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 62 | bfd_elf_generic_reloc, "R_386_RELATIVE", |
b34976b6 AM |
63 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
64 | HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 65 | bfd_elf_generic_reloc, "R_386_GOTOFF", |
b34976b6 AM |
66 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
67 | HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 68 | bfd_elf_generic_reloc, "R_386_GOTPC", |
b34976b6 | 69 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
1b452ec6 | 70 | |
dc47f327 AM |
71 | /* We have a gap in the reloc numbers here. |
72 | R_386_standard counts the number up to this point, and | |
73 | R_386_ext_offset is the value to subtract from a reloc type of | |
74 | R_386_16 thru R_386_PC8 to form an index into this table. */ | |
55fd94b0 AM |
75 | #define R_386_standard (R_386_GOTPC + 1) |
76 | #define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard) | |
1b452ec6 | 77 | |
37e55690 | 78 | /* These relocs are a GNU extension. */ |
b34976b6 | 79 | HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
37e55690 | 80 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF", |
b34976b6 AM |
81 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
82 | HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 83 | bfd_elf_generic_reloc, "R_386_TLS_IE", |
b34976b6 AM |
84 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
85 | HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 86 | bfd_elf_generic_reloc, "R_386_TLS_GOTIE", |
b34976b6 AM |
87 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
88 | HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 89 | bfd_elf_generic_reloc, "R_386_TLS_LE", |
b34976b6 AM |
90 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
91 | HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 92 | bfd_elf_generic_reloc, "R_386_TLS_GD", |
b34976b6 AM |
93 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
94 | HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 95 | bfd_elf_generic_reloc, "R_386_TLS_LDM", |
b34976b6 AM |
96 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
97 | HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 98 | bfd_elf_generic_reloc, "R_386_16", |
b34976b6 | 99 | TRUE, 0xffff, 0xffff, FALSE), |
b0360d8c | 100 | HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, |
1b452ec6 | 101 | bfd_elf_generic_reloc, "R_386_PC16", |
b34976b6 AM |
102 | TRUE, 0xffff, 0xffff, TRUE), |
103 | HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 104 | bfd_elf_generic_reloc, "R_386_8", |
b34976b6 AM |
105 | TRUE, 0xff, 0xff, FALSE), |
106 | HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
1b452ec6 | 107 | bfd_elf_generic_reloc, "R_386_PC8", |
b34976b6 | 108 | TRUE, 0xff, 0xff, TRUE), |
dc47f327 | 109 | |
55fd94b0 AM |
110 | #define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset) |
111 | #define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext) | |
13ae64f3 | 112 | /* These are common with Solaris TLS implementation. */ |
b34976b6 | 113 | HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
13ae64f3 | 114 | bfd_elf_generic_reloc, "R_386_TLS_LDO_32", |
b34976b6 AM |
115 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
116 | HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 117 | bfd_elf_generic_reloc, "R_386_TLS_IE_32", |
b34976b6 AM |
118 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
119 | HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 120 | bfd_elf_generic_reloc, "R_386_TLS_LE_32", |
b34976b6 AM |
121 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
122 | HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 123 | bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32", |
b34976b6 AM |
124 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
125 | HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 126 | bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32", |
b34976b6 AM |
127 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
128 | HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 129 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF32", |
b34976b6 | 130 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
67a4f2b7 AO |
131 | EMPTY_HOWTO (38), |
132 | HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
133 | bfd_elf_generic_reloc, "R_386_TLS_GOTDESC", | |
134 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
135 | HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
136 | bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL", | |
137 | FALSE, 0, 0, FALSE), | |
138 | HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
139 | bfd_elf_generic_reloc, "R_386_TLS_DESC", | |
140 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
13ae64f3 JJ |
141 | |
142 | /* Another gap. */ | |
67a4f2b7 | 143 | #define R_386_tls (R_386_TLS_DESC + 1 - R_386_tls_offset) |
55fd94b0 | 144 | #define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_tls) |
252b5132 RH |
145 | |
146 | /* GNU extension to record C++ vtable hierarchy. */ | |
252b5132 RH |
147 | HOWTO (R_386_GNU_VTINHERIT, /* type */ |
148 | 0, /* rightshift */ | |
149 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
150 | 0, /* bitsize */ | |
b34976b6 | 151 | FALSE, /* pc_relative */ |
252b5132 RH |
152 | 0, /* bitpos */ |
153 | complain_overflow_dont, /* complain_on_overflow */ | |
154 | NULL, /* special_function */ | |
155 | "R_386_GNU_VTINHERIT", /* name */ | |
b34976b6 | 156 | FALSE, /* partial_inplace */ |
252b5132 RH |
157 | 0, /* src_mask */ |
158 | 0, /* dst_mask */ | |
b34976b6 | 159 | FALSE), /* pcrel_offset */ |
252b5132 RH |
160 | |
161 | /* GNU extension to record C++ vtable member usage. */ | |
252b5132 RH |
162 | HOWTO (R_386_GNU_VTENTRY, /* type */ |
163 | 0, /* rightshift */ | |
164 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
165 | 0, /* bitsize */ | |
b34976b6 | 166 | FALSE, /* pc_relative */ |
252b5132 RH |
167 | 0, /* bitpos */ |
168 | complain_overflow_dont, /* complain_on_overflow */ | |
169 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
170 | "R_386_GNU_VTENTRY", /* name */ | |
b34976b6 | 171 | FALSE, /* partial_inplace */ |
252b5132 RH |
172 | 0, /* src_mask */ |
173 | 0, /* dst_mask */ | |
b34976b6 | 174 | FALSE) /* pcrel_offset */ |
dc47f327 | 175 | |
55fd94b0 | 176 | #define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset) |
dc47f327 AM |
177 | |
178 | }; | |
179 | ||
252b5132 | 180 | #ifdef DEBUG_GEN_RELOC |
55fd94b0 AM |
181 | #define TRACE(str) \ |
182 | fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str) | |
252b5132 RH |
183 | #else |
184 | #define TRACE(str) | |
185 | #endif | |
186 | ||
187 | static reloc_howto_type * | |
55fd94b0 AM |
188 | elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
189 | bfd_reloc_code_real_type code) | |
252b5132 RH |
190 | { |
191 | switch (code) | |
192 | { | |
193 | case BFD_RELOC_NONE: | |
194 | TRACE ("BFD_RELOC_NONE"); | |
55fd94b0 | 195 | return &elf_howto_table[R_386_NONE]; |
252b5132 RH |
196 | |
197 | case BFD_RELOC_32: | |
198 | TRACE ("BFD_RELOC_32"); | |
55fd94b0 | 199 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
200 | |
201 | case BFD_RELOC_CTOR: | |
202 | TRACE ("BFD_RELOC_CTOR"); | |
55fd94b0 | 203 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
204 | |
205 | case BFD_RELOC_32_PCREL: | |
206 | TRACE ("BFD_RELOC_PC32"); | |
55fd94b0 | 207 | return &elf_howto_table[R_386_PC32]; |
252b5132 RH |
208 | |
209 | case BFD_RELOC_386_GOT32: | |
210 | TRACE ("BFD_RELOC_386_GOT32"); | |
55fd94b0 | 211 | return &elf_howto_table[R_386_GOT32]; |
252b5132 RH |
212 | |
213 | case BFD_RELOC_386_PLT32: | |
214 | TRACE ("BFD_RELOC_386_PLT32"); | |
55fd94b0 | 215 | return &elf_howto_table[R_386_PLT32]; |
252b5132 RH |
216 | |
217 | case BFD_RELOC_386_COPY: | |
218 | TRACE ("BFD_RELOC_386_COPY"); | |
55fd94b0 | 219 | return &elf_howto_table[R_386_COPY]; |
252b5132 RH |
220 | |
221 | case BFD_RELOC_386_GLOB_DAT: | |
222 | TRACE ("BFD_RELOC_386_GLOB_DAT"); | |
55fd94b0 | 223 | return &elf_howto_table[R_386_GLOB_DAT]; |
252b5132 RH |
224 | |
225 | case BFD_RELOC_386_JUMP_SLOT: | |
226 | TRACE ("BFD_RELOC_386_JUMP_SLOT"); | |
55fd94b0 | 227 | return &elf_howto_table[R_386_JUMP_SLOT]; |
252b5132 RH |
228 | |
229 | case BFD_RELOC_386_RELATIVE: | |
230 | TRACE ("BFD_RELOC_386_RELATIVE"); | |
55fd94b0 | 231 | return &elf_howto_table[R_386_RELATIVE]; |
252b5132 RH |
232 | |
233 | case BFD_RELOC_386_GOTOFF: | |
234 | TRACE ("BFD_RELOC_386_GOTOFF"); | |
55fd94b0 | 235 | return &elf_howto_table[R_386_GOTOFF]; |
252b5132 RH |
236 | |
237 | case BFD_RELOC_386_GOTPC: | |
238 | TRACE ("BFD_RELOC_386_GOTPC"); | |
55fd94b0 | 239 | return &elf_howto_table[R_386_GOTPC]; |
252b5132 | 240 | |
37e55690 JJ |
241 | /* These relocs are a GNU extension. */ |
242 | case BFD_RELOC_386_TLS_TPOFF: | |
243 | TRACE ("BFD_RELOC_386_TLS_TPOFF"); | |
55fd94b0 | 244 | return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset]; |
37e55690 JJ |
245 | |
246 | case BFD_RELOC_386_TLS_IE: | |
247 | TRACE ("BFD_RELOC_386_TLS_IE"); | |
55fd94b0 | 248 | return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset]; |
37e55690 JJ |
249 | |
250 | case BFD_RELOC_386_TLS_GOTIE: | |
251 | TRACE ("BFD_RELOC_386_TLS_GOTIE"); | |
55fd94b0 | 252 | return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset]; |
37e55690 | 253 | |
13ae64f3 JJ |
254 | case BFD_RELOC_386_TLS_LE: |
255 | TRACE ("BFD_RELOC_386_TLS_LE"); | |
55fd94b0 | 256 | return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset]; |
13ae64f3 JJ |
257 | |
258 | case BFD_RELOC_386_TLS_GD: | |
259 | TRACE ("BFD_RELOC_386_TLS_GD"); | |
55fd94b0 | 260 | return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset]; |
13ae64f3 JJ |
261 | |
262 | case BFD_RELOC_386_TLS_LDM: | |
263 | TRACE ("BFD_RELOC_386_TLS_LDM"); | |
55fd94b0 | 264 | return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset]; |
13ae64f3 | 265 | |
252b5132 RH |
266 | case BFD_RELOC_16: |
267 | TRACE ("BFD_RELOC_16"); | |
55fd94b0 | 268 | return &elf_howto_table[R_386_16 - R_386_ext_offset]; |
252b5132 RH |
269 | |
270 | case BFD_RELOC_16_PCREL: | |
271 | TRACE ("BFD_RELOC_16_PCREL"); | |
55fd94b0 | 272 | return &elf_howto_table[R_386_PC16 - R_386_ext_offset]; |
252b5132 RH |
273 | |
274 | case BFD_RELOC_8: | |
275 | TRACE ("BFD_RELOC_8"); | |
55fd94b0 | 276 | return &elf_howto_table[R_386_8 - R_386_ext_offset]; |
252b5132 RH |
277 | |
278 | case BFD_RELOC_8_PCREL: | |
279 | TRACE ("BFD_RELOC_8_PCREL"); | |
55fd94b0 | 280 | return &elf_howto_table[R_386_PC8 - R_386_ext_offset]; |
252b5132 | 281 | |
13ae64f3 JJ |
282 | /* Common with Sun TLS implementation. */ |
283 | case BFD_RELOC_386_TLS_LDO_32: | |
284 | TRACE ("BFD_RELOC_386_TLS_LDO_32"); | |
55fd94b0 | 285 | return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset]; |
13ae64f3 JJ |
286 | |
287 | case BFD_RELOC_386_TLS_IE_32: | |
288 | TRACE ("BFD_RELOC_386_TLS_IE_32"); | |
55fd94b0 | 289 | return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
290 | |
291 | case BFD_RELOC_386_TLS_LE_32: | |
292 | TRACE ("BFD_RELOC_386_TLS_LE_32"); | |
55fd94b0 | 293 | return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
294 | |
295 | case BFD_RELOC_386_TLS_DTPMOD32: | |
296 | TRACE ("BFD_RELOC_386_TLS_DTPMOD32"); | |
55fd94b0 | 297 | return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset]; |
13ae64f3 JJ |
298 | |
299 | case BFD_RELOC_386_TLS_DTPOFF32: | |
300 | TRACE ("BFD_RELOC_386_TLS_DTPOFF32"); | |
55fd94b0 | 301 | return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset]; |
13ae64f3 JJ |
302 | |
303 | case BFD_RELOC_386_TLS_TPOFF32: | |
304 | TRACE ("BFD_RELOC_386_TLS_TPOFF32"); | |
55fd94b0 | 305 | return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset]; |
13ae64f3 | 306 | |
67a4f2b7 AO |
307 | case BFD_RELOC_386_TLS_GOTDESC: |
308 | TRACE ("BFD_RELOC_386_TLS_GOTDESC"); | |
309 | return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset]; | |
310 | ||
311 | case BFD_RELOC_386_TLS_DESC_CALL: | |
312 | TRACE ("BFD_RELOC_386_TLS_DESC_CALL"); | |
313 | return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset]; | |
314 | ||
315 | case BFD_RELOC_386_TLS_DESC: | |
316 | TRACE ("BFD_RELOC_386_TLS_DESC"); | |
317 | return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset]; | |
318 | ||
252b5132 RH |
319 | case BFD_RELOC_VTABLE_INHERIT: |
320 | TRACE ("BFD_RELOC_VTABLE_INHERIT"); | |
55fd94b0 | 321 | return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset]; |
252b5132 RH |
322 | |
323 | case BFD_RELOC_VTABLE_ENTRY: | |
324 | TRACE ("BFD_RELOC_VTABLE_ENTRY"); | |
55fd94b0 | 325 | return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset]; |
252b5132 RH |
326 | |
327 | default: | |
328 | break; | |
329 | } | |
330 | ||
331 | TRACE ("Unknown"); | |
332 | return 0; | |
333 | } | |
334 | ||
157090f7 AM |
335 | static reloc_howto_type * |
336 | elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
337 | const char *r_name) | |
338 | { | |
339 | unsigned int i; | |
340 | ||
341 | for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++) | |
342 | if (elf_howto_table[i].name != NULL | |
343 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
344 | return &elf_howto_table[i]; | |
345 | ||
346 | return NULL; | |
347 | } | |
348 | ||
142411ca L |
349 | static reloc_howto_type * |
350 | elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type) | |
252b5132 | 351 | { |
dc47f327 AM |
352 | unsigned int indx; |
353 | ||
354 | if ((indx = r_type) >= R_386_standard | |
355 | && ((indx = r_type - R_386_ext_offset) - R_386_standard | |
356 | >= R_386_ext - R_386_standard) | |
13ae64f3 JJ |
357 | && ((indx = r_type - R_386_tls_offset) - R_386_ext |
358 | >= R_386_tls - R_386_ext) | |
359 | && ((indx = r_type - R_386_vt_offset) - R_386_tls | |
360 | >= R_386_vt - R_386_tls)) | |
252b5132 | 361 | { |
d003868e AM |
362 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), |
363 | abfd, (int) r_type); | |
55fd94b0 | 364 | indx = R_386_NONE; |
252b5132 | 365 | } |
142411ca L |
366 | BFD_ASSERT (elf_howto_table [indx].type == r_type); |
367 | return &elf_howto_table[indx]; | |
368 | } | |
369 | ||
370 | static void | |
371 | elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, | |
372 | arelent *cache_ptr, | |
373 | Elf_Internal_Rela *dst) | |
374 | { | |
375 | unsigned int r_type = ELF32_R_TYPE (dst->r_info); | |
376 | cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type); | |
252b5132 RH |
377 | } |
378 | ||
379 | /* Return whether a symbol name implies a local label. The UnixWare | |
380 | 2.1 cc generates temporary symbols that start with .X, so we | |
381 | recognize them here. FIXME: do other SVR4 compilers also use .X?. | |
382 | If so, we should move the .X recognition into | |
383 | _bfd_elf_is_local_label_name. */ | |
384 | ||
b34976b6 | 385 | static bfd_boolean |
55fd94b0 | 386 | elf_i386_is_local_label_name (bfd *abfd, const char *name) |
252b5132 RH |
387 | { |
388 | if (name[0] == '.' && name[1] == 'X') | |
b34976b6 | 389 | return TRUE; |
252b5132 RH |
390 | |
391 | return _bfd_elf_is_local_label_name (abfd, name); | |
392 | } | |
393 | \f | |
38701953 | 394 | /* Support for core dump NOTE sections. */ |
61adc1a4 | 395 | |
b34976b6 | 396 | static bfd_boolean |
55fd94b0 | 397 | elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
38701953 AM |
398 | { |
399 | int offset; | |
eea6121a | 400 | size_t size; |
38701953 | 401 | |
61adc1a4 | 402 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 403 | { |
61adc1a4 NC |
404 | int pr_version = bfd_get_32 (abfd, note->descdata); |
405 | ||
406 | if (pr_version != 1) | |
407 | return FALSE; | |
408 | ||
409 | /* pr_cursig */ | |
410 | elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20); | |
411 | ||
412 | /* pr_pid */ | |
413 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
414 | ||
415 | /* pr_reg */ | |
416 | offset = 28; | |
eea6121a | 417 | size = bfd_get_32 (abfd, note->descdata + 8); |
61adc1a4 NC |
418 | } |
419 | else | |
420 | { | |
421 | switch (note->descsz) | |
422 | { | |
423 | default: | |
424 | return FALSE; | |
38701953 | 425 | |
61adc1a4 NC |
426 | case 144: /* Linux/i386 */ |
427 | /* pr_cursig */ | |
428 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
38701953 | 429 | |
61adc1a4 NC |
430 | /* pr_pid */ |
431 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
38701953 | 432 | |
61adc1a4 NC |
433 | /* pr_reg */ |
434 | offset = 72; | |
eea6121a | 435 | size = 68; |
38701953 | 436 | |
61adc1a4 NC |
437 | break; |
438 | } | |
38701953 AM |
439 | } |
440 | ||
441 | /* Make a ".reg/999" section. */ | |
442 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 443 | size, note->descpos + offset); |
38701953 AM |
444 | } |
445 | ||
b34976b6 | 446 | static bfd_boolean |
55fd94b0 | 447 | elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
38701953 | 448 | { |
61adc1a4 | 449 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 450 | { |
61adc1a4 NC |
451 | int pr_version = bfd_get_32 (abfd, note->descdata); |
452 | ||
453 | if (pr_version != 1) | |
b34976b6 | 454 | return FALSE; |
38701953 | 455 | |
61adc1a4 NC |
456 | elf_tdata (abfd)->core_program |
457 | = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17); | |
458 | elf_tdata (abfd)->core_command | |
459 | = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81); | |
460 | } | |
461 | else | |
462 | { | |
463 | switch (note->descsz) | |
464 | { | |
465 | default: | |
466 | return FALSE; | |
467 | ||
468 | case 124: /* Linux/i386 elf_prpsinfo. */ | |
469 | elf_tdata (abfd)->core_program | |
470 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
471 | elf_tdata (abfd)->core_command | |
472 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
473 | } | |
38701953 AM |
474 | } |
475 | ||
476 | /* Note that for some reason, a spurious space is tacked | |
477 | onto the end of the args in some (at least one anyway) | |
478 | implementations, so strip it off if it exists. */ | |
38701953 AM |
479 | { |
480 | char *command = elf_tdata (abfd)->core_command; | |
481 | int n = strlen (command); | |
482 | ||
483 | if (0 < n && command[n - 1] == ' ') | |
484 | command[n - 1] = '\0'; | |
485 | } | |
486 | ||
b34976b6 | 487 | return TRUE; |
38701953 AM |
488 | } |
489 | \f | |
490 | /* Functions for the i386 ELF linker. | |
491 | ||
492 | In order to gain some understanding of code in this file without | |
493 | knowing all the intricate details of the linker, note the | |
494 | following: | |
495 | ||
496 | Functions named elf_i386_* are called by external routines, other | |
497 | functions are only called locally. elf_i386_* functions appear | |
498 | in this file more or less in the order in which they are called | |
499 | from external routines. eg. elf_i386_check_relocs is called | |
500 | early in the link process, elf_i386_finish_dynamic_sections is | |
501 | one of the last functions. */ | |
502 | ||
252b5132 RH |
503 | |
504 | /* The name of the dynamic interpreter. This is put in the .interp | |
505 | section. */ | |
506 | ||
507 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
508 | ||
a23b6845 AM |
509 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
510 | copying dynamic variables from a shared lib into an app's dynbss | |
511 | section, and instead use a dynamic relocation to point into the | |
512 | shared lib. */ | |
513 | #define ELIMINATE_COPY_RELOCS 1 | |
514 | ||
252b5132 RH |
515 | /* The size in bytes of an entry in the procedure linkage table. */ |
516 | ||
517 | #define PLT_ENTRY_SIZE 16 | |
518 | ||
519 | /* The first entry in an absolute procedure linkage table looks like | |
eac338cf PB |
520 | this. See the SVR4 ABI i386 supplement to see how this works. |
521 | Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */ | |
252b5132 | 522 | |
eac338cf | 523 | static const bfd_byte elf_i386_plt0_entry[12] = |
252b5132 RH |
524 | { |
525 | 0xff, 0x35, /* pushl contents of address */ | |
526 | 0, 0, 0, 0, /* replaced with address of .got + 4. */ | |
527 | 0xff, 0x25, /* jmp indirect */ | |
eac338cf | 528 | 0, 0, 0, 0 /* replaced with address of .got + 8. */ |
252b5132 RH |
529 | }; |
530 | ||
531 | /* Subsequent entries in an absolute procedure linkage table look like | |
532 | this. */ | |
533 | ||
534 | static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] = | |
535 | { | |
536 | 0xff, 0x25, /* jmp indirect */ | |
537 | 0, 0, 0, 0, /* replaced with address of this symbol in .got. */ | |
538 | 0x68, /* pushl immediate */ | |
539 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
540 | 0xe9, /* jmp relative */ | |
541 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
542 | }; | |
543 | ||
eac338cf PB |
544 | /* The first entry in a PIC procedure linkage table look like this. |
545 | Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */ | |
252b5132 | 546 | |
eac338cf | 547 | static const bfd_byte elf_i386_pic_plt0_entry[12] = |
252b5132 RH |
548 | { |
549 | 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */ | |
eac338cf | 550 | 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */ |
252b5132 RH |
551 | }; |
552 | ||
553 | /* Subsequent entries in a PIC procedure linkage table look like this. */ | |
554 | ||
555 | static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] = | |
556 | { | |
557 | 0xff, 0xa3, /* jmp *offset(%ebx) */ | |
558 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
559 | 0x68, /* pushl immediate */ | |
560 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
561 | 0xe9, /* jmp relative */ | |
562 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
563 | }; | |
564 | ||
eac338cf PB |
565 | /* On VxWorks, the .rel.plt.unloaded section has absolute relocations |
566 | for the PLTResolve stub and then for each PLT entry. */ | |
567 | #define PLTRESOLVE_RELOCS_SHLIB 0 | |
568 | #define PLTRESOLVE_RELOCS 2 | |
569 | #define PLT_NON_JUMP_SLOT_RELOCS 2 | |
570 | ||
252b5132 | 571 | /* The i386 linker needs to keep track of the number of relocs that it |
ffb2e45b AM |
572 | decides to copy as dynamic relocs in check_relocs for each symbol. |
573 | This is so that it can later discard them if they are found to be | |
574 | unnecessary. We store the information in a field extending the | |
575 | regular ELF linker hash table. */ | |
252b5132 | 576 | |
ffb2e45b | 577 | struct elf_i386_dyn_relocs |
252b5132 | 578 | { |
ffb2e45b | 579 | struct elf_i386_dyn_relocs *next; |
0c715baa AM |
580 | |
581 | /* The input section of the reloc. */ | |
582 | asection *sec; | |
583 | ||
584 | /* Total number of relocs copied for the input section. */ | |
252b5132 | 585 | bfd_size_type count; |
0c715baa AM |
586 | |
587 | /* Number of pc-relative relocs copied for the input section. */ | |
588 | bfd_size_type pc_count; | |
252b5132 RH |
589 | }; |
590 | ||
591 | /* i386 ELF linker hash entry. */ | |
592 | ||
593 | struct elf_i386_link_hash_entry | |
594 | { | |
ebe50bae | 595 | struct elf_link_hash_entry elf; |
252b5132 | 596 | |
0c715baa | 597 | /* Track dynamic relocs copied for this symbol. */ |
ffb2e45b | 598 | struct elf_i386_dyn_relocs *dyn_relocs; |
13ae64f3 | 599 | |
37e55690 JJ |
600 | #define GOT_UNKNOWN 0 |
601 | #define GOT_NORMAL 1 | |
602 | #define GOT_TLS_GD 2 | |
603 | #define GOT_TLS_IE 4 | |
604 | #define GOT_TLS_IE_POS 5 | |
605 | #define GOT_TLS_IE_NEG 6 | |
606 | #define GOT_TLS_IE_BOTH 7 | |
67a4f2b7 AO |
607 | #define GOT_TLS_GDESC 8 |
608 | #define GOT_TLS_GD_BOTH_P(type) \ | |
609 | ((type) == (GOT_TLS_GD | GOT_TLS_GDESC)) | |
610 | #define GOT_TLS_GD_P(type) \ | |
611 | ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type)) | |
612 | #define GOT_TLS_GDESC_P(type) \ | |
613 | ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type)) | |
614 | #define GOT_TLS_GD_ANY_P(type) \ | |
615 | (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type)) | |
37e55690 | 616 | unsigned char tls_type; |
67a4f2b7 AO |
617 | |
618 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, | |
619 | starting at the end of the jump table. */ | |
620 | bfd_vma tlsdesc_got; | |
13ae64f3 JJ |
621 | }; |
622 | ||
623 | #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent)) | |
624 | ||
625 | struct elf_i386_obj_tdata | |
626 | { | |
627 | struct elf_obj_tdata root; | |
628 | ||
629 | /* tls_type for each local got entry. */ | |
630 | char *local_got_tls_type; | |
67a4f2b7 AO |
631 | |
632 | /* GOTPLT entries for TLS descriptors. */ | |
633 | bfd_vma *local_tlsdesc_gotent; | |
252b5132 RH |
634 | }; |
635 | ||
13ae64f3 JJ |
636 | #define elf_i386_tdata(abfd) \ |
637 | ((struct elf_i386_obj_tdata *) (abfd)->tdata.any) | |
638 | ||
639 | #define elf_i386_local_got_tls_type(abfd) \ | |
640 | (elf_i386_tdata (abfd)->local_got_tls_type) | |
641 | ||
67a4f2b7 AO |
642 | #define elf_i386_local_tlsdesc_gotent(abfd) \ |
643 | (elf_i386_tdata (abfd)->local_tlsdesc_gotent) | |
644 | ||
0ffa91dd NC |
645 | #define is_i386_elf(bfd) \ |
646 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
647 | && elf_tdata (bfd) != NULL \ | |
648 | && elf_object_id (bfd) == I386_ELF_TDATA) | |
649 | ||
b34976b6 | 650 | static bfd_boolean |
55fd94b0 | 651 | elf_i386_mkobject (bfd *abfd) |
13ae64f3 | 652 | { |
0ffa91dd NC |
653 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata), |
654 | I386_ELF_TDATA); | |
13ae64f3 | 655 | } |
cedb70c5 | 656 | |
252b5132 RH |
657 | /* i386 ELF linker hash table. */ |
658 | ||
659 | struct elf_i386_link_hash_table | |
660 | { | |
ebe50bae | 661 | struct elf_link_hash_table elf; |
252b5132 | 662 | |
6725bdbf AM |
663 | /* Short-cuts to get to dynamic linker sections. */ |
664 | asection *sgot; | |
665 | asection *sgotplt; | |
666 | asection *srelgot; | |
667 | asection *splt; | |
668 | asection *srelplt; | |
669 | asection *sdynbss; | |
670 | asection *srelbss; | |
9635fe29 | 671 | |
eac338cf PB |
672 | /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */ |
673 | asection *srelplt2; | |
674 | ||
eac338cf PB |
675 | /* True if the target system is VxWorks. */ |
676 | int is_vxworks; | |
ec338859 | 677 | |
eac338cf PB |
678 | /* Value used to fill the last word of the first plt entry. */ |
679 | bfd_byte plt0_pad_byte; | |
9635fe29 | 680 | |
5ae0bfb6 RS |
681 | /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */ |
682 | bfd_vma next_tls_desc_index; | |
683 | ||
13ae64f3 JJ |
684 | union { |
685 | bfd_signed_vma refcount; | |
686 | bfd_vma offset; | |
687 | } tls_ldm_got; | |
688 | ||
67a4f2b7 AO |
689 | /* The amount of space used by the reserved portion of the sgotplt |
690 | section, plus whatever space is used by the jump slots. */ | |
691 | bfd_vma sgotplt_jump_table_size; | |
692 | ||
ec338859 AM |
693 | /* Small local sym to section mapping cache. */ |
694 | struct sym_sec_cache sym_sec; | |
6725bdbf | 695 | }; |
252b5132 RH |
696 | |
697 | /* Get the i386 ELF linker hash table from a link_info structure. */ | |
698 | ||
699 | #define elf_i386_hash_table(p) \ | |
700 | ((struct elf_i386_link_hash_table *) ((p)->hash)) | |
701 | ||
67a4f2b7 | 702 | #define elf_i386_compute_jump_table_size(htab) \ |
5ae0bfb6 | 703 | ((htab)->next_tls_desc_index * 4) |
67a4f2b7 | 704 | |
252b5132 RH |
705 | /* Create an entry in an i386 ELF linker hash table. */ |
706 | ||
707 | static struct bfd_hash_entry * | |
55fd94b0 AM |
708 | link_hash_newfunc (struct bfd_hash_entry *entry, |
709 | struct bfd_hash_table *table, | |
710 | const char *string) | |
252b5132 | 711 | { |
252b5132 RH |
712 | /* Allocate the structure if it has not already been allocated by a |
713 | subclass. */ | |
ebe50bae AM |
714 | if (entry == NULL) |
715 | { | |
716 | entry = bfd_hash_allocate (table, | |
717 | sizeof (struct elf_i386_link_hash_entry)); | |
718 | if (entry == NULL) | |
719 | return entry; | |
720 | } | |
252b5132 RH |
721 | |
722 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
723 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
724 | if (entry != NULL) | |
252b5132 | 725 | { |
ebe50bae AM |
726 | struct elf_i386_link_hash_entry *eh; |
727 | ||
728 | eh = (struct elf_i386_link_hash_entry *) entry; | |
729 | eh->dyn_relocs = NULL; | |
13ae64f3 | 730 | eh->tls_type = GOT_UNKNOWN; |
67a4f2b7 | 731 | eh->tlsdesc_got = (bfd_vma) -1; |
252b5132 RH |
732 | } |
733 | ||
ebe50bae | 734 | return entry; |
252b5132 RH |
735 | } |
736 | ||
737 | /* Create an i386 ELF linker hash table. */ | |
738 | ||
739 | static struct bfd_link_hash_table * | |
55fd94b0 | 740 | elf_i386_link_hash_table_create (bfd *abfd) |
252b5132 RH |
741 | { |
742 | struct elf_i386_link_hash_table *ret; | |
dc810e39 | 743 | bfd_size_type amt = sizeof (struct elf_i386_link_hash_table); |
252b5132 | 744 | |
55fd94b0 | 745 | ret = bfd_malloc (amt); |
ebe50bae | 746 | if (ret == NULL) |
252b5132 RH |
747 | return NULL; |
748 | ||
66eb6687 AM |
749 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
750 | sizeof (struct elf_i386_link_hash_entry))) | |
252b5132 | 751 | { |
e2d34d7d | 752 | free (ret); |
252b5132 RH |
753 | return NULL; |
754 | } | |
755 | ||
6725bdbf AM |
756 | ret->sgot = NULL; |
757 | ret->sgotplt = NULL; | |
758 | ret->srelgot = NULL; | |
759 | ret->splt = NULL; | |
760 | ret->srelplt = NULL; | |
761 | ret->sdynbss = NULL; | |
762 | ret->srelbss = NULL; | |
7a624474 | 763 | ret->tls_ldm_got.refcount = 0; |
5ae0bfb6 | 764 | ret->next_tls_desc_index = 0; |
67a4f2b7 | 765 | ret->sgotplt_jump_table_size = 0; |
ec338859 | 766 | ret->sym_sec.abfd = NULL; |
eac338cf PB |
767 | ret->is_vxworks = 0; |
768 | ret->srelplt2 = NULL; | |
eac338cf | 769 | ret->plt0_pad_byte = 0; |
6725bdbf | 770 | |
ebe50bae | 771 | return &ret->elf.root; |
252b5132 RH |
772 | } |
773 | ||
6725bdbf AM |
774 | /* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up |
775 | shortcuts to them in our hash table. */ | |
776 | ||
b34976b6 | 777 | static bfd_boolean |
55fd94b0 | 778 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
6725bdbf AM |
779 | { |
780 | struct elf_i386_link_hash_table *htab; | |
781 | ||
782 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 783 | return FALSE; |
6725bdbf AM |
784 | |
785 | htab = elf_i386_hash_table (info); | |
786 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
787 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
788 | if (!htab->sgot || !htab->sgotplt) | |
789 | abort (); | |
790 | ||
3496cb2a L |
791 | htab->srelgot = bfd_make_section_with_flags (dynobj, ".rel.got", |
792 | (SEC_ALLOC | SEC_LOAD | |
793 | | SEC_HAS_CONTENTS | |
794 | | SEC_IN_MEMORY | |
795 | | SEC_LINKER_CREATED | |
796 | | SEC_READONLY)); | |
6725bdbf | 797 | if (htab->srelgot == NULL |
6725bdbf | 798 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) |
b34976b6 AM |
799 | return FALSE; |
800 | return TRUE; | |
6725bdbf AM |
801 | } |
802 | ||
803 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and | |
804 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
805 | hash table. */ | |
806 | ||
b34976b6 | 807 | static bfd_boolean |
55fd94b0 | 808 | elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
6725bdbf AM |
809 | { |
810 | struct elf_i386_link_hash_table *htab; | |
811 | ||
812 | htab = elf_i386_hash_table (info); | |
813 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
b34976b6 | 814 | return FALSE; |
6725bdbf AM |
815 | |
816 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 817 | return FALSE; |
6725bdbf AM |
818 | |
819 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
820 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt"); | |
821 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
822 | if (!info->shared) | |
823 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
824 | ||
825 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
826 | || (!info->shared && !htab->srelbss)) | |
827 | abort (); | |
828 | ||
711de32c RS |
829 | if (htab->is_vxworks |
830 | && !elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) | |
831 | return FALSE; | |
eac338cf | 832 | |
b34976b6 | 833 | return TRUE; |
6725bdbf AM |
834 | } |
835 | ||
ebe50bae AM |
836 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
837 | ||
51b64d56 | 838 | static void |
fcfa13d2 | 839 | elf_i386_copy_indirect_symbol (struct bfd_link_info *info, |
55fd94b0 AM |
840 | struct elf_link_hash_entry *dir, |
841 | struct elf_link_hash_entry *ind) | |
ebe50bae AM |
842 | { |
843 | struct elf_i386_link_hash_entry *edir, *eind; | |
844 | ||
845 | edir = (struct elf_i386_link_hash_entry *) dir; | |
846 | eind = (struct elf_i386_link_hash_entry *) ind; | |
847 | ||
bbd7ec4a | 848 | if (eind->dyn_relocs != NULL) |
ebe50bae | 849 | { |
bbd7ec4a AM |
850 | if (edir->dyn_relocs != NULL) |
851 | { | |
852 | struct elf_i386_dyn_relocs **pp; | |
853 | struct elf_i386_dyn_relocs *p; | |
854 | ||
fcfa13d2 | 855 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
856 | list. Merge any entries against the same section. */ |
857 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
858 | { | |
859 | struct elf_i386_dyn_relocs *q; | |
860 | ||
861 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
862 | if (q->sec == p->sec) | |
863 | { | |
864 | q->pc_count += p->pc_count; | |
865 | q->count += p->count; | |
866 | *pp = p->next; | |
867 | break; | |
868 | } | |
869 | if (q == NULL) | |
870 | pp = &p->next; | |
871 | } | |
872 | *pp = edir->dyn_relocs; | |
873 | } | |
874 | ||
ebe50bae AM |
875 | edir->dyn_relocs = eind->dyn_relocs; |
876 | eind->dyn_relocs = NULL; | |
877 | } | |
ebe50bae | 878 | |
cd67d266 JJ |
879 | if (ind->root.type == bfd_link_hash_indirect |
880 | && dir->got.refcount <= 0) | |
881 | { | |
882 | edir->tls_type = eind->tls_type; | |
883 | eind->tls_type = GOT_UNKNOWN; | |
884 | } | |
81848ca0 AM |
885 | |
886 | if (ELIMINATE_COPY_RELOCS | |
887 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
888 | && dir->dynamic_adjusted) |
889 | { | |
890 | /* If called to transfer flags for a weakdef during processing | |
891 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
892 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
893 | dir->ref_dynamic |= ind->ref_dynamic; | |
894 | dir->ref_regular |= ind->ref_regular; | |
895 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
896 | dir->needs_plt |= ind->needs_plt; | |
897 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
898 | } | |
81848ca0 | 899 | else |
fcfa13d2 | 900 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
ebe50bae AM |
901 | } |
902 | ||
142411ca L |
903 | typedef union |
904 | { | |
905 | unsigned char c[2]; | |
906 | uint16_t i; | |
907 | } | |
908 | i386_opcode16; | |
909 | ||
910 | /* Return TRUE if the TLS access code sequence support transition | |
911 | from R_TYPE. */ | |
912 | ||
913 | static bfd_boolean | |
914 | elf_i386_check_tls_transition (bfd *abfd, asection *sec, | |
915 | bfd_byte *contents, | |
916 | Elf_Internal_Shdr *symtab_hdr, | |
917 | struct elf_link_hash_entry **sym_hashes, | |
918 | unsigned int r_type, | |
919 | const Elf_Internal_Rela *rel, | |
920 | const Elf_Internal_Rela *relend) | |
13ae64f3 | 921 | { |
142411ca L |
922 | unsigned int val, type; |
923 | unsigned long r_symndx; | |
924 | struct elf_link_hash_entry *h; | |
925 | bfd_vma offset; | |
926 | ||
927 | /* Get the section contents. */ | |
928 | if (contents == NULL) | |
929 | { | |
930 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
931 | contents = elf_section_data (sec)->this_hdr.contents; | |
932 | else | |
933 | { | |
934 | /* FIXME: How to better handle error condition? */ | |
935 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
936 | return FALSE; | |
13ae64f3 | 937 | |
142411ca L |
938 | /* Cache the section contents for elf_link_input_bfd. */ |
939 | elf_section_data (sec)->this_hdr.contents = contents; | |
940 | } | |
941 | } | |
942 | ||
943 | offset = rel->r_offset; | |
13ae64f3 | 944 | switch (r_type) |
142411ca L |
945 | { |
946 | case R_386_TLS_GD: | |
947 | case R_386_TLS_LDM: | |
948 | if (offset < 2 || (rel + 1) >= relend) | |
949 | return FALSE; | |
950 | ||
951 | type = bfd_get_8 (abfd, contents + offset - 2); | |
952 | if (r_type == R_386_TLS_GD) | |
953 | { | |
954 | /* Check transition from LD access model. Only | |
955 | leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr | |
956 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop | |
957 | can transit to different access model. */ | |
958 | if ((offset + 10) > sec->size || | |
959 | (type != 0x8d && type != 0x04)) | |
960 | return FALSE; | |
961 | ||
962 | val = bfd_get_8 (abfd, contents + offset - 1); | |
963 | if (type == 0x04) | |
964 | { | |
965 | /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */ | |
966 | if (offset < 3) | |
967 | return FALSE; | |
968 | ||
969 | if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d) | |
970 | return FALSE; | |
971 | ||
972 | if ((val & 0xc7) != 0x05 || val == (4 << 3)) | |
973 | return FALSE; | |
974 | } | |
975 | else | |
976 | { | |
977 | /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */ | |
978 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
979 | return FALSE; | |
980 | ||
981 | if (bfd_get_8 (abfd, contents + offset + 9) != 0x90) | |
982 | return FALSE; | |
983 | } | |
984 | } | |
985 | else | |
986 | { | |
987 | /* Check transition from LD access model. Only | |
988 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr | |
989 | can transit to different access model. */ | |
990 | if (type != 0x8d || (offset + 9) > sec->size) | |
991 | return FALSE; | |
992 | ||
993 | val = bfd_get_8 (abfd, contents + offset - 1); | |
994 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
995 | return FALSE; | |
996 | } | |
997 | ||
998 | if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8) | |
999 | return FALSE; | |
1000 | ||
1001 | r_symndx = ELF32_R_SYM (rel[1].r_info); | |
1002 | if (r_symndx < symtab_hdr->sh_info) | |
1003 | return FALSE; | |
1004 | ||
1005 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1006 | return (h != NULL | |
1007 | && h->root.root.string != NULL | |
1008 | && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32 | |
1009 | || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32) | |
1010 | && (strcmp (h->root.root.string, "___tls_get_addr") == 0)); | |
1011 | ||
1012 | case R_386_TLS_IE: | |
1013 | /* Check transition from IE access model: | |
1014 | movl foo@indntpoff(%rip), %eax | |
1015 | movl foo@indntpoff(%rip), %reg | |
1016 | addl foo@indntpoff(%rip), %reg | |
1017 | */ | |
1018 | ||
1019 | if (offset < 1 || (offset + 4) > sec->size) | |
1020 | return FALSE; | |
1021 | ||
1022 | /* Check "movl foo@tpoff(%rip), %eax" first. */ | |
1023 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1024 | if (val == 0xa1) | |
1025 | return TRUE; | |
1026 | ||
1027 | if (offset < 2) | |
1028 | return FALSE; | |
1029 | ||
1030 | /* Check movl|addl foo@tpoff(%rip), %reg. */ | |
1031 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1032 | return ((type == 0x8b || type == 0x03) | |
1033 | && (val & 0xc7) == 0x05); | |
1034 | ||
1035 | case R_386_TLS_GOTIE: | |
1036 | case R_386_TLS_IE_32: | |
1037 | /* Check transition from {IE_32,GOTIE} access model: | |
1038 | subl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1039 | movl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1040 | addl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1041 | */ | |
1042 | ||
1043 | if (offset < 2 || (offset + 4) > sec->size) | |
1044 | return FALSE; | |
1045 | ||
1046 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1047 | if ((val & 0xc0) != 0x80 || (val & 7) == 4) | |
1048 | return FALSE; | |
1049 | ||
1050 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1051 | return type == 0x8b || type == 0x2b || type == 0x03; | |
1052 | ||
1053 | case R_386_TLS_GOTDESC: | |
1054 | /* Check transition from GDesc access model: | |
1055 | leal x@tlsdesc(%ebx), %eax | |
1056 | ||
1057 | Make sure it's a leal adding ebx to a 32-bit offset | |
1058 | into any register, although it's probably almost always | |
1059 | going to be eax. */ | |
1060 | ||
1061 | if (offset < 2 || (offset + 4) > sec->size) | |
1062 | return FALSE; | |
1063 | ||
1064 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1065 | return FALSE; | |
1066 | ||
1067 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1068 | return (val & 0xc7) == 0x83; | |
1069 | ||
1070 | case R_386_TLS_DESC_CALL: | |
1071 | /* Check transition from GDesc access model: | |
1072 | call *x@tlsdesc(%rax) | |
1073 | */ | |
1074 | if (offset + 2 <= sec->size) | |
1075 | { | |
1076 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
1077 | static i386_opcode16 call = { { 0xff, 0x10 } }; | |
1078 | return bfd_get_16 (abfd, contents + offset) == call.i; | |
1079 | } | |
1080 | ||
1081 | return FALSE; | |
1082 | ||
1083 | default: | |
1084 | abort (); | |
1085 | } | |
1086 | } | |
1087 | ||
1088 | /* Return TRUE if the TLS access transition is OK or no transition | |
1089 | will be performed. Update R_TYPE if there is a transition. */ | |
1090 | ||
1091 | static bfd_boolean | |
1092 | elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd, | |
1093 | asection *sec, bfd_byte *contents, | |
1094 | Elf_Internal_Shdr *symtab_hdr, | |
1095 | struct elf_link_hash_entry **sym_hashes, | |
1096 | unsigned int *r_type, int tls_type, | |
1097 | const Elf_Internal_Rela *rel, | |
1098 | const Elf_Internal_Rela *relend, | |
1099 | struct elf_link_hash_entry *h) | |
1100 | { | |
1101 | unsigned int from_type = *r_type; | |
1102 | unsigned int to_type = from_type; | |
1103 | bfd_boolean check = TRUE; | |
1104 | ||
1105 | switch (from_type) | |
13ae64f3 JJ |
1106 | { |
1107 | case R_386_TLS_GD: | |
67a4f2b7 AO |
1108 | case R_386_TLS_GOTDESC: |
1109 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 1110 | case R_386_TLS_IE_32: |
37e55690 JJ |
1111 | case R_386_TLS_IE: |
1112 | case R_386_TLS_GOTIE: | |
142411ca L |
1113 | if (!info->shared) |
1114 | { | |
1115 | if (h == NULL) | |
1116 | to_type = R_386_TLS_LE_32; | |
1117 | else if (from_type != R_386_TLS_IE | |
1118 | && from_type != R_386_TLS_GOTIE) | |
1119 | to_type = R_386_TLS_IE_32; | |
1120 | } | |
1121 | ||
1122 | /* When we are called from elf_i386_relocate_section, CONTENTS | |
1123 | isn't NULL and there may be additional transitions based on | |
1124 | TLS_TYPE. */ | |
1125 | if (contents != NULL) | |
1126 | { | |
1127 | unsigned int new_to_type = to_type; | |
1128 | ||
1129 | if (!info->shared | |
1130 | && h != NULL | |
1131 | && h->dynindx == -1 | |
1132 | && (tls_type & GOT_TLS_IE)) | |
1133 | new_to_type = R_386_TLS_LE_32; | |
1134 | ||
1135 | if (to_type == R_386_TLS_GD | |
1136 | || to_type == R_386_TLS_GOTDESC | |
1137 | || to_type == R_386_TLS_DESC_CALL) | |
1138 | { | |
1139 | if (tls_type == GOT_TLS_IE_POS) | |
1140 | new_to_type = R_386_TLS_GOTIE; | |
1141 | else if (tls_type & GOT_TLS_IE) | |
1142 | new_to_type = R_386_TLS_IE_32; | |
1143 | } | |
1144 | ||
1145 | /* We checked the transition before when we were called from | |
1146 | elf_i386_check_relocs. We only want to check the new | |
1147 | transition which hasn't been checked before. */ | |
1148 | check = new_to_type != to_type && from_type == to_type; | |
1149 | to_type = new_to_type; | |
1150 | } | |
1151 | ||
1152 | break; | |
1153 | ||
13ae64f3 | 1154 | case R_386_TLS_LDM: |
142411ca L |
1155 | if (!info->shared) |
1156 | to_type = R_386_TLS_LE_32; | |
1157 | break; | |
1158 | ||
1159 | default: | |
1160 | return TRUE; | |
1161 | } | |
1162 | ||
1163 | /* Return TRUE if there is no transition. */ | |
1164 | if (from_type == to_type) | |
1165 | return TRUE; | |
1166 | ||
1167 | /* Check if the transition can be performed. */ | |
1168 | if (check | |
1169 | && ! elf_i386_check_tls_transition (abfd, sec, contents, | |
1170 | symtab_hdr, sym_hashes, | |
1171 | from_type, rel, relend)) | |
1172 | { | |
2f629d23 | 1173 | reloc_howto_type *from, *to; |
142411ca L |
1174 | |
1175 | from = elf_i386_rtype_to_howto (abfd, from_type); | |
1176 | to = elf_i386_rtype_to_howto (abfd, to_type); | |
1177 | ||
1178 | (*_bfd_error_handler) | |
1179 | (_("%B: TLS transition from %s to %s against `%s' at 0x%lx " | |
1180 | "in section `%A' failed"), | |
1181 | abfd, sec, from->name, to->name, | |
1182 | h ? h->root.root.string : "a local symbol", | |
1183 | (unsigned long) rel->r_offset); | |
1184 | bfd_set_error (bfd_error_bad_value); | |
1185 | return FALSE; | |
13ae64f3 JJ |
1186 | } |
1187 | ||
142411ca L |
1188 | *r_type = to_type; |
1189 | return TRUE; | |
13ae64f3 JJ |
1190 | } |
1191 | ||
252b5132 | 1192 | /* Look through the relocs for a section during the first phase, and |
0ac8d2ca AM |
1193 | calculate needed space in the global offset table, procedure linkage |
1194 | table, and dynamic reloc sections. */ | |
252b5132 | 1195 | |
b34976b6 | 1196 | static bfd_boolean |
55fd94b0 AM |
1197 | elf_i386_check_relocs (bfd *abfd, |
1198 | struct bfd_link_info *info, | |
1199 | asection *sec, | |
1200 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1201 | { |
6725bdbf | 1202 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1203 | Elf_Internal_Shdr *symtab_hdr; |
1204 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
1205 | const Elf_Internal_Rela *rel; |
1206 | const Elf_Internal_Rela *rel_end; | |
252b5132 RH |
1207 | asection *sreloc; |
1208 | ||
1049f94e | 1209 | if (info->relocatable) |
b34976b6 | 1210 | return TRUE; |
252b5132 | 1211 | |
0ffa91dd NC |
1212 | BFD_ASSERT (is_i386_elf (abfd)); |
1213 | ||
6725bdbf | 1214 | htab = elf_i386_hash_table (info); |
0ffa91dd | 1215 | symtab_hdr = &elf_symtab_hdr (abfd); |
252b5132 | 1216 | sym_hashes = elf_sym_hashes (abfd); |
252b5132 | 1217 | |
252b5132 RH |
1218 | sreloc = NULL; |
1219 | ||
1220 | rel_end = relocs + sec->reloc_count; | |
1221 | for (rel = relocs; rel < rel_end; rel++) | |
1222 | { | |
13ae64f3 | 1223 | unsigned int r_type; |
252b5132 RH |
1224 | unsigned long r_symndx; |
1225 | struct elf_link_hash_entry *h; | |
1226 | ||
1227 | r_symndx = ELF32_R_SYM (rel->r_info); | |
13ae64f3 | 1228 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 1229 | |
d9bc7a44 | 1230 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
f5f31454 | 1231 | { |
d003868e AM |
1232 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
1233 | abfd, | |
8f615d07 | 1234 | r_symndx); |
b34976b6 | 1235 | return FALSE; |
f5f31454 L |
1236 | } |
1237 | ||
252b5132 RH |
1238 | if (r_symndx < symtab_hdr->sh_info) |
1239 | h = NULL; | |
1240 | else | |
71cb9464 L |
1241 | { |
1242 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1243 | while (h->root.type == bfd_link_hash_indirect | |
1244 | || h->root.type == bfd_link_hash_warning) | |
1245 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1246 | } | |
252b5132 | 1247 | |
142411ca L |
1248 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1249 | symtab_hdr, sym_hashes, | |
1250 | &r_type, GOT_UNKNOWN, | |
1251 | rel, rel_end, h)) | |
1252 | return FALSE; | |
13ae64f3 JJ |
1253 | |
1254 | switch (r_type) | |
252b5132 | 1255 | { |
37e55690 JJ |
1256 | case R_386_TLS_LDM: |
1257 | htab->tls_ldm_got.refcount += 1; | |
1258 | goto create_got; | |
1259 | ||
1260 | case R_386_PLT32: | |
1261 | /* This symbol requires a procedure linkage table entry. We | |
1262 | actually build the entry in adjust_dynamic_symbol, | |
1263 | because this might be a case of linking PIC code which is | |
1264 | never referenced by a dynamic object, in which case we | |
1265 | don't need to generate a procedure linkage table entry | |
1266 | after all. */ | |
1267 | ||
1268 | /* If this is a local symbol, we resolve it directly without | |
1269 | creating a procedure linkage table entry. */ | |
1270 | if (h == NULL) | |
1271 | continue; | |
1272 | ||
f5385ebf | 1273 | h->needs_plt = 1; |
37e55690 JJ |
1274 | h->plt.refcount += 1; |
1275 | break; | |
1276 | ||
13ae64f3 | 1277 | case R_386_TLS_IE_32: |
37e55690 JJ |
1278 | case R_386_TLS_IE: |
1279 | case R_386_TLS_GOTIE: | |
13ae64f3 JJ |
1280 | if (info->shared) |
1281 | info->flags |= DF_STATIC_TLS; | |
37e55690 JJ |
1282 | /* Fall through */ |
1283 | ||
252b5132 | 1284 | case R_386_GOT32: |
13ae64f3 | 1285 | case R_386_TLS_GD: |
67a4f2b7 AO |
1286 | case R_386_TLS_GOTDESC: |
1287 | case R_386_TLS_DESC_CALL: | |
252b5132 | 1288 | /* This symbol requires a global offset table entry. */ |
13ae64f3 JJ |
1289 | { |
1290 | int tls_type, old_tls_type; | |
1291 | ||
1292 | switch (r_type) | |
1293 | { | |
1294 | default: | |
1295 | case R_386_GOT32: tls_type = GOT_NORMAL; break; | |
1296 | case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; | |
67a4f2b7 AO |
1297 | case R_386_TLS_GOTDESC: |
1298 | case R_386_TLS_DESC_CALL: | |
1299 | tls_type = GOT_TLS_GDESC; break; | |
37e55690 JJ |
1300 | case R_386_TLS_IE_32: |
1301 | if (ELF32_R_TYPE (rel->r_info) == r_type) | |
1302 | tls_type = GOT_TLS_IE_NEG; | |
1303 | else | |
ebcfb3c0 JJ |
1304 | /* If this is a GD->IE transition, we may use either of |
1305 | R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ | |
37e55690 JJ |
1306 | tls_type = GOT_TLS_IE; |
1307 | break; | |
1308 | case R_386_TLS_IE: | |
1309 | case R_386_TLS_GOTIE: | |
1310 | tls_type = GOT_TLS_IE_POS; break; | |
13ae64f3 JJ |
1311 | } |
1312 | ||
1313 | if (h != NULL) | |
1314 | { | |
1315 | h->got.refcount += 1; | |
1316 | old_tls_type = elf_i386_hash_entry(h)->tls_type; | |
1317 | } | |
1318 | else | |
1319 | { | |
1320 | bfd_signed_vma *local_got_refcounts; | |
1321 | ||
1322 | /* This is a global offset table entry for a local symbol. */ | |
1323 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1324 | if (local_got_refcounts == NULL) | |
1325 | { | |
1326 | bfd_size_type size; | |
1327 | ||
1328 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
1329 | size *= (sizeof (bfd_signed_vma) |
1330 | + sizeof (bfd_vma) + sizeof(char)); | |
55fd94b0 | 1331 | local_got_refcounts = bfd_zalloc (abfd, size); |
13ae64f3 | 1332 | if (local_got_refcounts == NULL) |
b34976b6 | 1333 | return FALSE; |
13ae64f3 | 1334 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
67a4f2b7 AO |
1335 | elf_i386_local_tlsdesc_gotent (abfd) |
1336 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); | |
13ae64f3 | 1337 | elf_i386_local_got_tls_type (abfd) |
67a4f2b7 | 1338 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
13ae64f3 JJ |
1339 | } |
1340 | local_got_refcounts[r_symndx] += 1; | |
1341 | old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx]; | |
1342 | } | |
1343 | ||
37e55690 JJ |
1344 | if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) |
1345 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1346 | /* If a TLS symbol is accessed using IE at least once, |
1347 | there is no point to use dynamic model for it. */ | |
ebcfb3c0 | 1348 | else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
67a4f2b7 | 1349 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
37e55690 | 1350 | || (tls_type & GOT_TLS_IE) == 0)) |
13ae64f3 | 1351 | { |
67a4f2b7 | 1352 | if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type)) |
37e55690 | 1353 | tls_type = old_tls_type; |
67a4f2b7 AO |
1354 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
1355 | && GOT_TLS_GD_ANY_P (tls_type)) | |
1356 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1357 | else |
1358 | { | |
1359 | (*_bfd_error_handler) | |
d003868e | 1360 | (_("%B: `%s' accessed both as normal and " |
55fd94b0 | 1361 | "thread local symbol"), |
d003868e | 1362 | abfd, |
37e55690 | 1363 | h ? h->root.root.string : "<local>"); |
b34976b6 | 1364 | return FALSE; |
13ae64f3 JJ |
1365 | } |
1366 | } | |
1367 | ||
1368 | if (old_tls_type != tls_type) | |
1369 | { | |
1370 | if (h != NULL) | |
1371 | elf_i386_hash_entry (h)->tls_type = tls_type; | |
1372 | else | |
1373 | elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1374 | } | |
1375 | } | |
0ac8d2ca AM |
1376 | /* Fall through */ |
1377 | ||
1378 | case R_386_GOTOFF: | |
1379 | case R_386_GOTPC: | |
13ae64f3 | 1380 | create_got: |
0ac8d2ca AM |
1381 | if (htab->sgot == NULL) |
1382 | { | |
1383 | if (htab->elf.dynobj == NULL) | |
1384 | htab->elf.dynobj = abfd; | |
1385 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 1386 | return FALSE; |
0ac8d2ca | 1387 | } |
37e55690 JJ |
1388 | if (r_type != R_386_TLS_IE) |
1389 | break; | |
1390 | /* Fall through */ | |
252b5132 | 1391 | |
37e55690 JJ |
1392 | case R_386_TLS_LE_32: |
1393 | case R_386_TLS_LE: | |
1394 | if (!info->shared) | |
1395 | break; | |
bffbf940 | 1396 | info->flags |= DF_STATIC_TLS; |
b34976b6 | 1397 | /* Fall through */ |
252b5132 RH |
1398 | |
1399 | case R_386_32: | |
1400 | case R_386_PC32: | |
12d0ee4a | 1401 | if (h != NULL && !info->shared) |
6725bdbf | 1402 | { |
12d0ee4a | 1403 | /* If this reloc is in a read-only section, we might |
ebe50bae AM |
1404 | need a copy reloc. We can't check reliably at this |
1405 | stage whether the section is read-only, as input | |
1406 | sections have not yet been mapped to output sections. | |
1407 | Tentatively set the flag for now, and correct in | |
1408 | adjust_dynamic_symbol. */ | |
f5385ebf | 1409 | h->non_got_ref = 1; |
12d0ee4a AM |
1410 | |
1411 | /* We may need a .plt entry if the function this reloc | |
1412 | refers to is in a shared lib. */ | |
51b64d56 | 1413 | h->plt.refcount += 1; |
c6585bbb | 1414 | if (r_type != R_386_PC32) |
f5385ebf | 1415 | h->pointer_equality_needed = 1; |
6725bdbf | 1416 | } |
7843f00e | 1417 | |
252b5132 | 1418 | /* If we are creating a shared library, and this is a reloc |
f69da49f AM |
1419 | against a global symbol, or a non PC relative reloc |
1420 | against a local symbol, then we need to copy the reloc | |
1421 | into the shared library. However, if we are linking with | |
1422 | -Bsymbolic, we do not need to copy a reloc against a | |
1423 | global symbol which is defined in an object we are | |
1424 | including in the link (i.e., DEF_REGULAR is set). At | |
1425 | this point we have not seen all the input files, so it is | |
1426 | possible that DEF_REGULAR is not set now but will be set | |
1f655a09 L |
1427 | later (it is never cleared). In case of a weak definition, |
1428 | DEF_REGULAR may be cleared later by a strong definition in | |
ebe50bae | 1429 | a shared library. We account for that possibility below by |
1f655a09 L |
1430 | storing information in the relocs_copied field of the hash |
1431 | table entry. A similar situation occurs when creating | |
1432 | shared libraries and symbol visibility changes render the | |
12d0ee4a | 1433 | symbol local. |
56882138 | 1434 | |
12d0ee4a AM |
1435 | If on the other hand, we are creating an executable, we |
1436 | may need to keep relocations for symbols satisfied by a | |
1437 | dynamic library if we manage to avoid copy relocs for the | |
1438 | symbol. */ | |
1439 | if ((info->shared | |
1440 | && (sec->flags & SEC_ALLOC) != 0 | |
13ae64f3 | 1441 | && (r_type != R_386_PC32 |
12d0ee4a | 1442 | || (h != NULL |
55255dae | 1443 | && (! SYMBOLIC_BIND (info, h) |
12d0ee4a | 1444 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1445 | || !h->def_regular)))) |
a23b6845 AM |
1446 | || (ELIMINATE_COPY_RELOCS |
1447 | && !info->shared | |
12d0ee4a AM |
1448 | && (sec->flags & SEC_ALLOC) != 0 |
1449 | && h != NULL | |
12d0ee4a | 1450 | && (h->root.type == bfd_link_hash_defweak |
f5385ebf | 1451 | || !h->def_regular))) |
252b5132 | 1452 | { |
ec338859 AM |
1453 | struct elf_i386_dyn_relocs *p; |
1454 | struct elf_i386_dyn_relocs **head; | |
1455 | ||
12d0ee4a AM |
1456 | /* We must copy these reloc types into the output file. |
1457 | Create a reloc section in dynobj and make room for | |
1458 | this reloc. */ | |
252b5132 RH |
1459 | if (sreloc == NULL) |
1460 | { | |
1461 | const char *name; | |
0ac8d2ca | 1462 | bfd *dynobj; |
e92d460e AM |
1463 | unsigned int strndx = elf_elfheader (abfd)->e_shstrndx; |
1464 | unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name; | |
252b5132 | 1465 | |
e92d460e | 1466 | name = bfd_elf_string_from_elf_section (abfd, strndx, shnam); |
252b5132 | 1467 | if (name == NULL) |
b34976b6 | 1468 | return FALSE; |
252b5132 | 1469 | |
0112cd26 | 1470 | if (! CONST_STRNEQ (name, ".rel") |
c8492176 L |
1471 | || strcmp (bfd_get_section_name (abfd, sec), |
1472 | name + 4) != 0) | |
1473 | { | |
0c715baa | 1474 | (*_bfd_error_handler) |
d003868e AM |
1475 | (_("%B: bad relocation section name `%s\'"), |
1476 | abfd, name); | |
f5f31454 | 1477 | } |
252b5132 | 1478 | |
0ac8d2ca AM |
1479 | if (htab->elf.dynobj == NULL) |
1480 | htab->elf.dynobj = abfd; | |
1481 | ||
1482 | dynobj = htab->elf.dynobj; | |
252b5132 RH |
1483 | sreloc = bfd_get_section_by_name (dynobj, name); |
1484 | if (sreloc == NULL) | |
1485 | { | |
1486 | flagword flags; | |
1487 | ||
252b5132 RH |
1488 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
1489 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
1490 | if ((sec->flags & SEC_ALLOC) != 0) | |
1491 | flags |= SEC_ALLOC | SEC_LOAD; | |
3496cb2a L |
1492 | sreloc = bfd_make_section_with_flags (dynobj, |
1493 | name, | |
1494 | flags); | |
252b5132 | 1495 | if (sreloc == NULL |
252b5132 | 1496 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) |
b34976b6 | 1497 | return FALSE; |
252b5132 | 1498 | } |
0c715baa | 1499 | elf_section_data (sec)->sreloc = sreloc; |
252b5132 RH |
1500 | } |
1501 | ||
0c715baa AM |
1502 | /* If this is a global symbol, we count the number of |
1503 | relocations we need for this symbol. */ | |
1504 | if (h != NULL) | |
252b5132 | 1505 | { |
ec338859 | 1506 | head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs; |
0c715baa AM |
1507 | } |
1508 | else | |
1509 | { | |
e81d3500 | 1510 | void **vpp; |
ec338859 AM |
1511 | /* Track dynamic relocs needed for local syms too. |
1512 | We really need local syms available to do this | |
1513 | easily. Oh well. */ | |
1514 | ||
1515 | asection *s; | |
1516 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
1517 | sec, r_symndx); | |
1518 | if (s == NULL) | |
b34976b6 | 1519 | return FALSE; |
ec338859 | 1520 | |
e81d3500 DD |
1521 | vpp = &elf_section_data (s)->local_dynrel; |
1522 | head = (struct elf_i386_dyn_relocs **)vpp; | |
ec338859 AM |
1523 | } |
1524 | ||
1525 | p = *head; | |
1526 | if (p == NULL || p->sec != sec) | |
1527 | { | |
1528 | bfd_size_type amt = sizeof *p; | |
55fd94b0 | 1529 | p = bfd_alloc (htab->elf.dynobj, amt); |
ec338859 | 1530 | if (p == NULL) |
b34976b6 | 1531 | return FALSE; |
ec338859 AM |
1532 | p->next = *head; |
1533 | *head = p; | |
1534 | p->sec = sec; | |
1535 | p->count = 0; | |
1536 | p->pc_count = 0; | |
252b5132 | 1537 | } |
ec338859 AM |
1538 | |
1539 | p->count += 1; | |
13ae64f3 | 1540 | if (r_type == R_386_PC32) |
ec338859 | 1541 | p->pc_count += 1; |
252b5132 | 1542 | } |
252b5132 RH |
1543 | break; |
1544 | ||
1545 | /* This relocation describes the C++ object vtable hierarchy. | |
1546 | Reconstruct it for later use during GC. */ | |
1547 | case R_386_GNU_VTINHERIT: | |
d17e0c6e | 1548 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 1549 | return FALSE; |
252b5132 RH |
1550 | break; |
1551 | ||
1552 | /* This relocation describes which C++ vtable entries are actually | |
1553 | used. Record for later use during GC. */ | |
1554 | case R_386_GNU_VTENTRY: | |
c6aa130f MS |
1555 | BFD_ASSERT (h != NULL); |
1556 | if (h != NULL | |
1557 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1558 | return FALSE; |
252b5132 RH |
1559 | break; |
1560 | ||
1561 | default: | |
1562 | break; | |
1563 | } | |
1564 | } | |
1565 | ||
b34976b6 | 1566 | return TRUE; |
252b5132 RH |
1567 | } |
1568 | ||
1569 | /* Return the section that should be marked against GC for a given | |
1570 | relocation. */ | |
1571 | ||
1572 | static asection * | |
55fd94b0 | 1573 | elf_i386_gc_mark_hook (asection *sec, |
07adf181 | 1574 | struct bfd_link_info *info, |
55fd94b0 AM |
1575 | Elf_Internal_Rela *rel, |
1576 | struct elf_link_hash_entry *h, | |
1577 | Elf_Internal_Sym *sym) | |
252b5132 RH |
1578 | { |
1579 | if (h != NULL) | |
07adf181 AM |
1580 | switch (ELF32_R_TYPE (rel->r_info)) |
1581 | { | |
1582 | case R_386_GNU_VTINHERIT: | |
1583 | case R_386_GNU_VTENTRY: | |
1584 | return NULL; | |
1585 | } | |
1586 | ||
1587 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
1588 | } |
1589 | ||
1590 | /* Update the got entry reference counts for the section being removed. */ | |
1591 | ||
b34976b6 | 1592 | static bfd_boolean |
55fd94b0 AM |
1593 | elf_i386_gc_sweep_hook (bfd *abfd, |
1594 | struct bfd_link_info *info, | |
1595 | asection *sec, | |
1596 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1597 | { |
dd5724d5 AM |
1598 | Elf_Internal_Shdr *symtab_hdr; |
1599 | struct elf_link_hash_entry **sym_hashes; | |
1600 | bfd_signed_vma *local_got_refcounts; | |
1601 | const Elf_Internal_Rela *rel, *relend; | |
dd5724d5 | 1602 | |
7dda2462 TG |
1603 | if (info->relocatable) |
1604 | return TRUE; | |
1605 | ||
ec338859 | 1606 | elf_section_data (sec)->local_dynrel = NULL; |
dd5724d5 | 1607 | |
0ffa91dd | 1608 | symtab_hdr = &elf_symtab_hdr (abfd); |
6725bdbf AM |
1609 | sym_hashes = elf_sym_hashes (abfd); |
1610 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
dd5724d5 AM |
1611 | |
1612 | relend = relocs + sec->reloc_count; | |
1613 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1614 | { |
1615 | unsigned long r_symndx; | |
1616 | unsigned int r_type; | |
1617 | struct elf_link_hash_entry *h = NULL; | |
37e55690 | 1618 | |
26e41594 AM |
1619 | r_symndx = ELF32_R_SYM (rel->r_info); |
1620 | if (r_symndx >= symtab_hdr->sh_info) | |
1621 | { | |
1622 | struct elf_i386_link_hash_entry *eh; | |
1623 | struct elf_i386_dyn_relocs **pp; | |
1624 | struct elf_i386_dyn_relocs *p; | |
dd5724d5 | 1625 | |
26e41594 | 1626 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1627 | while (h->root.type == bfd_link_hash_indirect |
1628 | || h->root.type == bfd_link_hash_warning) | |
1629 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1630 | eh = (struct elf_i386_link_hash_entry *) h; |
0c715baa | 1631 | |
26e41594 AM |
1632 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1633 | if (p->sec == sec) | |
1634 | { | |
1635 | /* Everything must go for SEC. */ | |
1636 | *pp = p->next; | |
1637 | break; | |
1638 | } | |
1639 | } | |
0c715baa | 1640 | |
26e41594 | 1641 | r_type = ELF32_R_TYPE (rel->r_info); |
142411ca L |
1642 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1643 | symtab_hdr, sym_hashes, | |
1644 | &r_type, GOT_UNKNOWN, | |
1645 | rel, relend, h)) | |
1646 | return FALSE; | |
1647 | ||
26e41594 AM |
1648 | switch (r_type) |
1649 | { | |
1650 | case R_386_TLS_LDM: | |
1651 | if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0) | |
1652 | elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1; | |
1653 | break; | |
0c715baa | 1654 | |
26e41594 | 1655 | case R_386_TLS_GD: |
67a4f2b7 AO |
1656 | case R_386_TLS_GOTDESC: |
1657 | case R_386_TLS_DESC_CALL: | |
26e41594 AM |
1658 | case R_386_TLS_IE_32: |
1659 | case R_386_TLS_IE: | |
1660 | case R_386_TLS_GOTIE: | |
1661 | case R_386_GOT32: | |
1662 | if (h != NULL) | |
1663 | { | |
1664 | if (h->got.refcount > 0) | |
1665 | h->got.refcount -= 1; | |
1666 | } | |
1667 | else if (local_got_refcounts != NULL) | |
1668 | { | |
1669 | if (local_got_refcounts[r_symndx] > 0) | |
1670 | local_got_refcounts[r_symndx] -= 1; | |
1671 | } | |
1672 | break; | |
0c715baa | 1673 | |
26e41594 AM |
1674 | case R_386_32: |
1675 | case R_386_PC32: | |
1676 | if (info->shared) | |
1677 | break; | |
1678 | /* Fall through */ | |
6725bdbf | 1679 | |
26e41594 AM |
1680 | case R_386_PLT32: |
1681 | if (h != NULL) | |
1682 | { | |
1683 | if (h->plt.refcount > 0) | |
1684 | h->plt.refcount -= 1; | |
1685 | } | |
1686 | break; | |
dd5724d5 | 1687 | |
26e41594 AM |
1688 | default: |
1689 | break; | |
1690 | } | |
1691 | } | |
252b5132 | 1692 | |
b34976b6 | 1693 | return TRUE; |
252b5132 RH |
1694 | } |
1695 | ||
1696 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1697 | regular object. The current definition is in some section of the | |
1698 | dynamic object, but we're not including those sections. We have to | |
1699 | change the definition to something the rest of the link can | |
1700 | understand. */ | |
1701 | ||
b34976b6 | 1702 | static bfd_boolean |
55fd94b0 AM |
1703 | elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info, |
1704 | struct elf_link_hash_entry *h) | |
252b5132 | 1705 | { |
6725bdbf | 1706 | struct elf_i386_link_hash_table *htab; |
252b5132 | 1707 | asection *s; |
252b5132 | 1708 | |
252b5132 RH |
1709 | /* If this is a function, put it in the procedure linkage table. We |
1710 | will fill in the contents of the procedure linkage table later, | |
1711 | when we know the address of the .got section. */ | |
1712 | if (h->type == STT_FUNC | |
f5385ebf | 1713 | || h->needs_plt) |
252b5132 | 1714 | { |
6725bdbf | 1715 | if (h->plt.refcount <= 0 |
9c7a29a3 AM |
1716 | || SYMBOL_CALLS_LOCAL (info, h) |
1717 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1718 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
1719 | { |
1720 | /* This case can occur if we saw a PLT32 reloc in an input | |
dd5724d5 AM |
1721 | file, but the symbol was never referred to by a dynamic |
1722 | object, or if all references were garbage collected. In | |
1723 | such a case, we don't actually need to build a procedure | |
1724 | linkage table, and we can just do a PC32 reloc instead. */ | |
bbd7ec4a | 1725 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1726 | h->needs_plt = 0; |
252b5132 RH |
1727 | } |
1728 | ||
b34976b6 | 1729 | return TRUE; |
252b5132 | 1730 | } |
6725bdbf AM |
1731 | else |
1732 | /* It's possible that we incorrectly decided a .plt reloc was | |
1733 | needed for an R_386_PC32 reloc to a non-function sym in | |
1734 | check_relocs. We can't decide accurately between function and | |
1735 | non-function syms in check-relocs; Objects loaded later in | |
1736 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1737 | h->plt.offset = (bfd_vma) -1; |
252b5132 RH |
1738 | |
1739 | /* If this is a weak symbol, and there is a real definition, the | |
1740 | processor independent code will have arranged for us to see the | |
1741 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1742 | if (h->u.weakdef != NULL) |
252b5132 | 1743 | { |
f6e332e6 AM |
1744 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1745 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1746 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1747 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 1748 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 1749 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 1750 | return TRUE; |
252b5132 RH |
1751 | } |
1752 | ||
1753 | /* This is a reference to a symbol defined by a dynamic object which | |
1754 | is not a function. */ | |
1755 | ||
1756 | /* If we are creating a shared library, we must presume that the | |
1757 | only references to the symbol are via the global offset table. | |
1758 | For such cases we need not do anything here; the relocations will | |
1759 | be handled correctly by relocate_section. */ | |
1760 | if (info->shared) | |
b34976b6 | 1761 | return TRUE; |
252b5132 | 1762 | |
7843f00e ILT |
1763 | /* If there are no references to this symbol that do not use the |
1764 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1765 | if (!h->non_got_ref) |
b34976b6 | 1766 | return TRUE; |
7843f00e | 1767 | |
8bd621d8 AM |
1768 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1769 | if (info->nocopyreloc) | |
1770 | { | |
f5385ebf | 1771 | h->non_got_ref = 0; |
b34976b6 | 1772 | return TRUE; |
8bd621d8 AM |
1773 | } |
1774 | ||
643796e3 DJ |
1775 | htab = elf_i386_hash_table (info); |
1776 | ||
1777 | /* If there aren't any dynamic relocs in read-only sections, then | |
1778 | we can keep the dynamic relocs and avoid the copy reloc. This | |
1779 | doesn't work on VxWorks, where we can not have dynamic relocations | |
1780 | (other than copy and jump slot relocations) in an executable. */ | |
1781 | if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks) | |
ebe50bae | 1782 | { |
a23b6845 AM |
1783 | struct elf_i386_link_hash_entry * eh; |
1784 | struct elf_i386_dyn_relocs *p; | |
ebe50bae | 1785 | |
a23b6845 AM |
1786 | eh = (struct elf_i386_link_hash_entry *) h; |
1787 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1788 | { | |
1789 | s = p->sec->output_section; | |
1790 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1791 | break; | |
1792 | } | |
1793 | ||
a23b6845 AM |
1794 | if (p == NULL) |
1795 | { | |
f5385ebf | 1796 | h->non_got_ref = 0; |
a23b6845 AM |
1797 | return TRUE; |
1798 | } | |
ebe50bae AM |
1799 | } |
1800 | ||
909272ee AM |
1801 | if (h->size == 0) |
1802 | { | |
1803 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1804 | h->root.root.string); | |
1805 | return TRUE; | |
1806 | } | |
1807 | ||
252b5132 RH |
1808 | /* We must allocate the symbol in our .dynbss section, which will |
1809 | become part of the .bss section of the executable. There will be | |
1810 | an entry for this symbol in the .dynsym section. The dynamic | |
1811 | object will contain position independent code, so all references | |
1812 | from the dynamic object to this symbol will go through the global | |
1813 | offset table. The dynamic linker will use the .dynsym entry to | |
1814 | determine the address it must put in the global offset table, so | |
1815 | both the dynamic object and the regular object will refer to the | |
1816 | same memory location for the variable. */ | |
1817 | ||
252b5132 RH |
1818 | /* We must generate a R_386_COPY reloc to tell the dynamic linker to |
1819 | copy the initial value out of the dynamic object and into the | |
0ac8d2ca | 1820 | runtime process image. */ |
252b5132 RH |
1821 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1822 | { | |
eea6121a | 1823 | htab->srelbss->size += sizeof (Elf32_External_Rel); |
f5385ebf | 1824 | h->needs_copy = 1; |
252b5132 RH |
1825 | } |
1826 | ||
0ac8d2ca | 1827 | s = htab->sdynbss; |
252b5132 | 1828 | |
027297b7 | 1829 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
1830 | } |
1831 | ||
6725bdbf | 1832 | /* Allocate space in .plt, .got and associated reloc sections for |
0c715baa | 1833 | dynamic relocs. */ |
6725bdbf | 1834 | |
b34976b6 | 1835 | static bfd_boolean |
55fd94b0 | 1836 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
6725bdbf AM |
1837 | { |
1838 | struct bfd_link_info *info; | |
1839 | struct elf_i386_link_hash_table *htab; | |
5a15f56f | 1840 | struct elf_i386_link_hash_entry *eh; |
0c715baa | 1841 | struct elf_i386_dyn_relocs *p; |
6725bdbf | 1842 | |
e92d460e | 1843 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1844 | return TRUE; |
6725bdbf | 1845 | |
e92d460e AM |
1846 | if (h->root.type == bfd_link_hash_warning) |
1847 | /* When warning symbols are created, they **replace** the "real" | |
1848 | entry in the hash table, thus we never get to see the real | |
1849 | symbol in a hash traversal. So look at it now. */ | |
1850 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1851 | ||
6725bdbf AM |
1852 | info = (struct bfd_link_info *) inf; |
1853 | htab = elf_i386_hash_table (info); | |
1854 | ||
ebe50bae | 1855 | if (htab->elf.dynamic_sections_created |
9c7a29a3 | 1856 | && h->plt.refcount > 0) |
6725bdbf | 1857 | { |
5a15f56f AM |
1858 | /* Make sure this symbol is output as a dynamic symbol. |
1859 | Undefined weak syms won't yet be marked as dynamic. */ | |
1860 | if (h->dynindx == -1 | |
f5385ebf | 1861 | && !h->forced_local) |
5a15f56f | 1862 | { |
c152c796 | 1863 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1864 | return FALSE; |
5a15f56f AM |
1865 | } |
1866 | ||
4e795f50 AM |
1867 | if (info->shared |
1868 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
ced53ee5 | 1869 | { |
0ac8d2ca | 1870 | asection *s = htab->splt; |
6725bdbf | 1871 | |
ced53ee5 AM |
1872 | /* If this is the first .plt entry, make room for the special |
1873 | first entry. */ | |
eea6121a AM |
1874 | if (s->size == 0) |
1875 | s->size += PLT_ENTRY_SIZE; | |
6725bdbf | 1876 | |
eea6121a | 1877 | h->plt.offset = s->size; |
6725bdbf | 1878 | |
ced53ee5 AM |
1879 | /* If this symbol is not defined in a regular file, and we are |
1880 | not generating a shared library, then set the symbol to this | |
1881 | location in the .plt. This is required to make function | |
1882 | pointers compare as equal between the normal executable and | |
1883 | the shared library. */ | |
1884 | if (! info->shared | |
f5385ebf | 1885 | && !h->def_regular) |
ced53ee5 AM |
1886 | { |
1887 | h->root.u.def.section = s; | |
1888 | h->root.u.def.value = h->plt.offset; | |
1889 | } | |
6725bdbf | 1890 | |
ced53ee5 | 1891 | /* Make room for this entry. */ |
eea6121a | 1892 | s->size += PLT_ENTRY_SIZE; |
6725bdbf | 1893 | |
ced53ee5 AM |
1894 | /* We also need to make an entry in the .got.plt section, which |
1895 | will be placed in the .got section by the linker script. */ | |
eea6121a | 1896 | htab->sgotplt->size += 4; |
6725bdbf | 1897 | |
6725bdbf | 1898 | /* We also need to make an entry in the .rel.plt section. */ |
eea6121a | 1899 | htab->srelplt->size += sizeof (Elf32_External_Rel); |
5ae0bfb6 | 1900 | htab->next_tls_desc_index++; |
eac338cf PB |
1901 | |
1902 | if (htab->is_vxworks && !info->shared) | |
1903 | { | |
1904 | /* VxWorks has a second set of relocations for each PLT entry | |
1905 | in executables. They go in a separate relocation section, | |
1906 | which is processed by the kernel loader. */ | |
1907 | ||
1908 | /* There are two relocations for the initial PLT entry: an | |
1909 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an | |
1910 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
1911 | ||
1912 | if (h->plt.offset == PLT_ENTRY_SIZE) | |
1913 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); | |
1914 | ||
1915 | /* There are two extra relocations for each subsequent PLT entry: | |
1916 | an R_386_32 relocation for the GOT entry, and an R_386_32 | |
1917 | relocation for the PLT entry. */ | |
1918 | ||
1919 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); | |
1920 | } | |
6725bdbf | 1921 | } |
ced53ee5 AM |
1922 | else |
1923 | { | |
51b64d56 | 1924 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1925 | h->needs_plt = 0; |
ced53ee5 | 1926 | } |
6725bdbf AM |
1927 | } |
1928 | else | |
1929 | { | |
51b64d56 | 1930 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1931 | h->needs_plt = 0; |
6725bdbf AM |
1932 | } |
1933 | ||
67a4f2b7 AO |
1934 | eh = (struct elf_i386_link_hash_entry *) h; |
1935 | eh->tlsdesc_got = (bfd_vma) -1; | |
1936 | ||
37e55690 | 1937 | /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, |
13ae64f3 JJ |
1938 | make it a R_386_TLS_LE_32 requiring no TLS entry. */ |
1939 | if (h->got.refcount > 0 | |
1940 | && !info->shared | |
1941 | && h->dynindx == -1 | |
37e55690 | 1942 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE)) |
cedb70c5 | 1943 | h->got.offset = (bfd_vma) -1; |
13ae64f3 | 1944 | else if (h->got.refcount > 0) |
6725bdbf | 1945 | { |
0ac8d2ca | 1946 | asection *s; |
b34976b6 | 1947 | bfd_boolean dyn; |
13ae64f3 | 1948 | int tls_type = elf_i386_hash_entry(h)->tls_type; |
6725bdbf | 1949 | |
5a15f56f AM |
1950 | /* Make sure this symbol is output as a dynamic symbol. |
1951 | Undefined weak syms won't yet be marked as dynamic. */ | |
1952 | if (h->dynindx == -1 | |
f5385ebf | 1953 | && !h->forced_local) |
5a15f56f | 1954 | { |
c152c796 | 1955 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1956 | return FALSE; |
5a15f56f AM |
1957 | } |
1958 | ||
6725bdbf | 1959 | s = htab->sgot; |
67a4f2b7 AO |
1960 | if (GOT_TLS_GDESC_P (tls_type)) |
1961 | { | |
1962 | eh->tlsdesc_got = htab->sgotplt->size | |
1963 | - elf_i386_compute_jump_table_size (htab); | |
1964 | htab->sgotplt->size += 8; | |
1965 | h->got.offset = (bfd_vma) -2; | |
1966 | } | |
1967 | if (! GOT_TLS_GDESC_P (tls_type) | |
1968 | || GOT_TLS_GD_P (tls_type)) | |
1969 | { | |
1970 | h->got.offset = s->size; | |
1971 | s->size += 4; | |
1972 | /* R_386_TLS_GD needs 2 consecutive GOT slots. */ | |
1973 | if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH) | |
1974 | s->size += 4; | |
1975 | } | |
ebe50bae | 1976 | dyn = htab->elf.dynamic_sections_created; |
13ae64f3 | 1977 | /* R_386_TLS_IE_32 needs one dynamic relocation, |
37e55690 JJ |
1978 | R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, |
1979 | (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we | |
1980 | need two), R_386_TLS_GD needs one if local symbol and two if | |
1981 | global. */ | |
1982 | if (tls_type == GOT_TLS_IE_BOTH) | |
eea6121a | 1983 | htab->srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 | 1984 | else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1) |
37e55690 | 1985 | || (tls_type & GOT_TLS_IE)) |
eea6121a | 1986 | htab->srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 1987 | else if (GOT_TLS_GD_P (tls_type)) |
eea6121a | 1988 | htab->srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
1989 | else if (! GOT_TLS_GDESC_P (tls_type) |
1990 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1991 | || h->root.type != bfd_link_hash_undefweak) | |
ef5aade5 L |
1992 | && (info->shared |
1993 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
eea6121a | 1994 | htab->srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
1995 | if (GOT_TLS_GDESC_P (tls_type)) |
1996 | htab->srelplt->size += sizeof (Elf32_External_Rel); | |
6725bdbf AM |
1997 | } |
1998 | else | |
51b64d56 | 1999 | h->got.offset = (bfd_vma) -1; |
6725bdbf | 2000 | |
5a15f56f | 2001 | if (eh->dyn_relocs == NULL) |
b34976b6 | 2002 | return TRUE; |
5a15f56f | 2003 | |
0c715baa AM |
2004 | /* In the shared -Bsymbolic case, discard space allocated for |
2005 | dynamic pc-relative relocs against symbols which turn out to be | |
2006 | defined in regular objects. For the normal shared case, discard | |
0ac8d2ca AM |
2007 | space for pc-relative relocs that have become local due to symbol |
2008 | visibility changes. */ | |
0c715baa AM |
2009 | |
2010 | if (info->shared) | |
5a15f56f | 2011 | { |
09695f56 AM |
2012 | /* The only reloc that uses pc_count is R_386_PC32, which will |
2013 | appear on a call or on something like ".long foo - .". We | |
2014 | want calls to protected symbols to resolve directly to the | |
2015 | function rather than going via the plt. If people want | |
2016 | function pointer comparisons to work as expected then they | |
2017 | should avoid writing assembly like ".long foo - .". */ | |
2018 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
5a15f56f | 2019 | { |
0c715baa AM |
2020 | struct elf_i386_dyn_relocs **pp; |
2021 | ||
2022 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2023 | { | |
2024 | p->count -= p->pc_count; | |
2025 | p->pc_count = 0; | |
2026 | if (p->count == 0) | |
2027 | *pp = p->next; | |
2028 | else | |
2029 | pp = &p->next; | |
2030 | } | |
5a15f56f | 2031 | } |
4e795f50 | 2032 | |
3348747a NS |
2033 | if (htab->is_vxworks) |
2034 | { | |
2035 | struct elf_i386_dyn_relocs **pp; | |
2036 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2037 | { | |
2038 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
2039 | *pp = p->next; | |
2040 | else | |
2041 | pp = &p->next; | |
2042 | } | |
2043 | } | |
2044 | ||
4e795f50 | 2045 | /* Also discard relocs on undefined weak syms with non-default |
3348747a | 2046 | visibility. */ |
22d606e9 | 2047 | if (eh->dyn_relocs != NULL |
4e795f50 | 2048 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
2049 | { |
2050 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2051 | eh->dyn_relocs = NULL; | |
2052 | ||
2053 | /* Make sure undefined weak symbols are output as a dynamic | |
2054 | symbol in PIEs. */ | |
2055 | else if (h->dynindx == -1 | |
2056 | && !h->forced_local) | |
2057 | { | |
2058 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2059 | return FALSE; | |
2060 | } | |
2061 | } | |
0c715baa | 2062 | } |
a23b6845 | 2063 | else if (ELIMINATE_COPY_RELOCS) |
0c715baa AM |
2064 | { |
2065 | /* For the non-shared case, discard space for relocs against | |
2066 | symbols which turn out to need copy relocs or are not | |
2067 | dynamic. */ | |
2068 | ||
f5385ebf AM |
2069 | if (!h->non_got_ref |
2070 | && ((h->def_dynamic | |
2071 | && !h->def_regular) | |
ebe50bae | 2072 | || (htab->elf.dynamic_sections_created |
0c715baa AM |
2073 | && (h->root.type == bfd_link_hash_undefweak |
2074 | || h->root.type == bfd_link_hash_undefined)))) | |
2075 | { | |
2076 | /* Make sure this symbol is output as a dynamic symbol. | |
2077 | Undefined weak syms won't yet be marked as dynamic. */ | |
2078 | if (h->dynindx == -1 | |
f5385ebf | 2079 | && !h->forced_local) |
0c715baa | 2080 | { |
c152c796 | 2081 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2082 | return FALSE; |
0c715baa | 2083 | } |
5a15f56f | 2084 | |
0c715baa AM |
2085 | /* If that succeeded, we know we'll be keeping all the |
2086 | relocs. */ | |
2087 | if (h->dynindx != -1) | |
2088 | goto keep; | |
2089 | } | |
2090 | ||
2091 | eh->dyn_relocs = NULL; | |
2092 | ||
ec338859 | 2093 | keep: ; |
5a15f56f AM |
2094 | } |
2095 | ||
0c715baa AM |
2096 | /* Finally, allocate space. */ |
2097 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
12d0ee4a | 2098 | { |
0c715baa | 2099 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
eea6121a | 2100 | sreloc->size += p->count * sizeof (Elf32_External_Rel); |
12d0ee4a AM |
2101 | } |
2102 | ||
b34976b6 | 2103 | return TRUE; |
6725bdbf AM |
2104 | } |
2105 | ||
0c715baa AM |
2106 | /* Find any dynamic relocs that apply to read-only sections. */ |
2107 | ||
b34976b6 | 2108 | static bfd_boolean |
55fd94b0 | 2109 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
0c715baa AM |
2110 | { |
2111 | struct elf_i386_link_hash_entry *eh; | |
2112 | struct elf_i386_dyn_relocs *p; | |
2113 | ||
e92d460e AM |
2114 | if (h->root.type == bfd_link_hash_warning) |
2115 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2116 | ||
0c715baa AM |
2117 | eh = (struct elf_i386_link_hash_entry *) h; |
2118 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2119 | { | |
2120 | asection *s = p->sec->output_section; | |
2121 | ||
2122 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2123 | { | |
2124 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2125 | ||
2126 | info->flags |= DF_TEXTREL; | |
2127 | ||
2128 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 2129 | return FALSE; |
0c715baa AM |
2130 | } |
2131 | } | |
b34976b6 | 2132 | return TRUE; |
0c715baa AM |
2133 | } |
2134 | ||
252b5132 RH |
2135 | /* Set the sizes of the dynamic sections. */ |
2136 | ||
b34976b6 | 2137 | static bfd_boolean |
55fd94b0 AM |
2138 | elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
2139 | struct bfd_link_info *info) | |
252b5132 | 2140 | { |
6725bdbf | 2141 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2142 | bfd *dynobj; |
2143 | asection *s; | |
b34976b6 | 2144 | bfd_boolean relocs; |
0c715baa | 2145 | bfd *ibfd; |
252b5132 | 2146 | |
6725bdbf | 2147 | htab = elf_i386_hash_table (info); |
ebe50bae | 2148 | dynobj = htab->elf.dynobj; |
ffb2e45b AM |
2149 | if (dynobj == NULL) |
2150 | abort (); | |
252b5132 | 2151 | |
ebe50bae | 2152 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2153 | { |
2154 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 2155 | if (info->executable) |
252b5132 RH |
2156 | { |
2157 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
ffb2e45b AM |
2158 | if (s == NULL) |
2159 | abort (); | |
eea6121a | 2160 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
2161 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2162 | } | |
161d71a6 | 2163 | } |
6725bdbf | 2164 | |
0c715baa AM |
2165 | /* Set up .got offsets for local syms, and space for local dynamic |
2166 | relocs. */ | |
2167 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
161d71a6 L |
2168 | { |
2169 | bfd_signed_vma *local_got; | |
2170 | bfd_signed_vma *end_local_got; | |
13ae64f3 | 2171 | char *local_tls_type; |
67a4f2b7 | 2172 | bfd_vma *local_tlsdesc_gotent; |
161d71a6 L |
2173 | bfd_size_type locsymcount; |
2174 | Elf_Internal_Shdr *symtab_hdr; | |
2175 | asection *srel; | |
6725bdbf | 2176 | |
0ffa91dd | 2177 | if (! is_i386_elf (ibfd)) |
161d71a6 | 2178 | continue; |
6725bdbf | 2179 | |
0c715baa AM |
2180 | for (s = ibfd->sections; s != NULL; s = s->next) |
2181 | { | |
ec338859 | 2182 | struct elf_i386_dyn_relocs *p; |
0c715baa | 2183 | |
e81d3500 DD |
2184 | for (p = ((struct elf_i386_dyn_relocs *) |
2185 | elf_section_data (s)->local_dynrel); | |
ec338859 AM |
2186 | p != NULL; |
2187 | p = p->next) | |
0c715baa | 2188 | { |
ec338859 AM |
2189 | if (!bfd_is_abs_section (p->sec) |
2190 | && bfd_is_abs_section (p->sec->output_section)) | |
2191 | { | |
2192 | /* Input section has been discarded, either because | |
2193 | it is a copy of a linkonce section or due to | |
2194 | linker script /DISCARD/, so we'll be discarding | |
2195 | the relocs too. */ | |
2196 | } | |
3348747a NS |
2197 | else if (htab->is_vxworks |
2198 | && strcmp (p->sec->output_section->name, | |
2199 | ".tls_vars") == 0) | |
2200 | { | |
2201 | /* Relocations in vxworks .tls_vars sections are | |
2202 | handled specially by the loader. */ | |
2203 | } | |
248866a8 | 2204 | else if (p->count != 0) |
ec338859 AM |
2205 | { |
2206 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 2207 | srel->size += p->count * sizeof (Elf32_External_Rel); |
248866a8 AM |
2208 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
2209 | info->flags |= DF_TEXTREL; | |
ec338859 | 2210 | } |
0c715baa AM |
2211 | } |
2212 | } | |
2213 | ||
2214 | local_got = elf_local_got_refcounts (ibfd); | |
161d71a6 L |
2215 | if (!local_got) |
2216 | continue; | |
6725bdbf | 2217 | |
0ffa91dd | 2218 | symtab_hdr = &elf_symtab_hdr (ibfd); |
161d71a6 L |
2219 | locsymcount = symtab_hdr->sh_info; |
2220 | end_local_got = local_got + locsymcount; | |
13ae64f3 | 2221 | local_tls_type = elf_i386_local_got_tls_type (ibfd); |
67a4f2b7 | 2222 | local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd); |
161d71a6 L |
2223 | s = htab->sgot; |
2224 | srel = htab->srelgot; | |
67a4f2b7 AO |
2225 | for (; local_got < end_local_got; |
2226 | ++local_got, ++local_tls_type, ++local_tlsdesc_gotent) | |
161d71a6 | 2227 | { |
67a4f2b7 | 2228 | *local_tlsdesc_gotent = (bfd_vma) -1; |
161d71a6 | 2229 | if (*local_got > 0) |
6725bdbf | 2230 | { |
67a4f2b7 AO |
2231 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
2232 | { | |
2233 | *local_tlsdesc_gotent = htab->sgotplt->size | |
2234 | - elf_i386_compute_jump_table_size (htab); | |
2235 | htab->sgotplt->size += 8; | |
2236 | *local_got = (bfd_vma) -2; | |
2237 | } | |
2238 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2239 | || GOT_TLS_GD_P (*local_tls_type)) | |
2240 | { | |
2241 | *local_got = s->size; | |
2242 | s->size += 4; | |
2243 | if (GOT_TLS_GD_P (*local_tls_type) | |
2244 | || *local_tls_type == GOT_TLS_IE_BOTH) | |
2245 | s->size += 4; | |
2246 | } | |
13ae64f3 | 2247 | if (info->shared |
67a4f2b7 | 2248 | || GOT_TLS_GD_ANY_P (*local_tls_type) |
37e55690 JJ |
2249 | || (*local_tls_type & GOT_TLS_IE)) |
2250 | { | |
2251 | if (*local_tls_type == GOT_TLS_IE_BOTH) | |
eea6121a | 2252 | srel->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2253 | else if (GOT_TLS_GD_P (*local_tls_type) |
2254 | || ! GOT_TLS_GDESC_P (*local_tls_type)) | |
eea6121a | 2255 | srel->size += sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2256 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
2257 | htab->srelplt->size += sizeof (Elf32_External_Rel); | |
37e55690 | 2258 | } |
6725bdbf | 2259 | } |
161d71a6 L |
2260 | else |
2261 | *local_got = (bfd_vma) -1; | |
6725bdbf | 2262 | } |
252b5132 | 2263 | } |
6725bdbf | 2264 | |
13ae64f3 JJ |
2265 | if (htab->tls_ldm_got.refcount > 0) |
2266 | { | |
2267 | /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM | |
2268 | relocs. */ | |
eea6121a AM |
2269 | htab->tls_ldm_got.offset = htab->sgot->size; |
2270 | htab->sgot->size += 8; | |
2271 | htab->srelgot->size += sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2272 | } |
2273 | else | |
2274 | htab->tls_ldm_got.offset = -1; | |
2275 | ||
0c715baa AM |
2276 | /* Allocate global sym .plt and .got entries, and space for global |
2277 | sym dynamic relocs. */ | |
ebe50bae | 2278 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); |
252b5132 | 2279 | |
67a4f2b7 AO |
2280 | /* For every jump slot reserved in the sgotplt, reloc_count is |
2281 | incremented. However, when we reserve space for TLS descriptors, | |
2282 | it's not incremented, so in order to compute the space reserved | |
2283 | for them, it suffices to multiply the reloc count by the jump | |
2284 | slot size. */ | |
2285 | if (htab->srelplt) | |
5ae0bfb6 | 2286 | htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4; |
67a4f2b7 | 2287 | |
5a15f56f AM |
2288 | /* We now have determined the sizes of the various dynamic sections. |
2289 | Allocate memory for them. */ | |
b34976b6 | 2290 | relocs = FALSE; |
252b5132 RH |
2291 | for (s = dynobj->sections; s != NULL; s = s->next) |
2292 | { | |
eac338cf PB |
2293 | bfd_boolean strip_section = TRUE; |
2294 | ||
252b5132 RH |
2295 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
2296 | continue; | |
2297 | ||
6725bdbf AM |
2298 | if (s == htab->splt |
2299 | || s == htab->sgot | |
75ff4589 L |
2300 | || s == htab->sgotplt |
2301 | || s == htab->sdynbss) | |
252b5132 | 2302 | { |
6725bdbf AM |
2303 | /* Strip this section if we don't need it; see the |
2304 | comment below. */ | |
eac338cf PB |
2305 | /* We'd like to strip these sections if they aren't needed, but if |
2306 | we've exported dynamic symbols from them we must leave them. | |
2307 | It's too late to tell BFD to get rid of the symbols. */ | |
2308 | ||
7325306f | 2309 | if (htab->elf.hplt != NULL) |
eac338cf | 2310 | strip_section = FALSE; |
252b5132 | 2311 | } |
0112cd26 | 2312 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel")) |
252b5132 | 2313 | { |
eac338cf | 2314 | if (s->size != 0 && s != htab->srelplt && s != htab->srelplt2) |
b34976b6 | 2315 | relocs = TRUE; |
252b5132 | 2316 | |
0ac8d2ca AM |
2317 | /* We use the reloc_count field as a counter if we need |
2318 | to copy relocs into the output file. */ | |
5ae0bfb6 | 2319 | s->reloc_count = 0; |
252b5132 | 2320 | } |
6725bdbf | 2321 | else |
252b5132 RH |
2322 | { |
2323 | /* It's not one of our sections, so don't allocate space. */ | |
2324 | continue; | |
2325 | } | |
2326 | ||
c456f082 | 2327 | if (s->size == 0) |
252b5132 | 2328 | { |
0ac8d2ca AM |
2329 | /* If we don't need this section, strip it from the |
2330 | output file. This is mostly to handle .rel.bss and | |
2331 | .rel.plt. We must create both sections in | |
2332 | create_dynamic_sections, because they must be created | |
2333 | before the linker maps input sections to output | |
2334 | sections. The linker does that before | |
2335 | adjust_dynamic_symbol is called, and it is that | |
2336 | function which decides whether anything needs to go | |
2337 | into these sections. */ | |
c456f082 AM |
2338 | if (strip_section) |
2339 | s->flags |= SEC_EXCLUDE; | |
252b5132 RH |
2340 | continue; |
2341 | } | |
2342 | ||
c456f082 AM |
2343 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2344 | continue; | |
2345 | ||
f69da49f AM |
2346 | /* Allocate memory for the section contents. We use bfd_zalloc |
2347 | here in case unused entries are not reclaimed before the | |
2348 | section's contents are written out. This should not happen, | |
2349 | but this way if it does, we get a R_386_NONE reloc instead | |
2350 | of garbage. */ | |
eea6121a | 2351 | s->contents = bfd_zalloc (dynobj, s->size); |
6725bdbf | 2352 | if (s->contents == NULL) |
b34976b6 | 2353 | return FALSE; |
252b5132 RH |
2354 | } |
2355 | ||
ebe50bae | 2356 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2357 | { |
2358 | /* Add some entries to the .dynamic section. We fill in the | |
2359 | values later, in elf_i386_finish_dynamic_sections, but we | |
2360 | must add the entries now so that we get the correct size for | |
2361 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2362 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2363 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2364 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2365 | |
36af4a4e | 2366 | if (info->executable) |
252b5132 | 2367 | { |
dc810e39 | 2368 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2369 | return FALSE; |
252b5132 RH |
2370 | } |
2371 | ||
eea6121a | 2372 | if (htab->splt->size != 0) |
252b5132 | 2373 | { |
dc810e39 AM |
2374 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2375 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2376 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
2377 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2378 | return FALSE; |
252b5132 RH |
2379 | } |
2380 | ||
2381 | if (relocs) | |
2382 | { | |
dc810e39 AM |
2383 | if (!add_dynamic_entry (DT_REL, 0) |
2384 | || !add_dynamic_entry (DT_RELSZ, 0) | |
2385 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 2386 | return FALSE; |
252b5132 | 2387 | |
0c715baa AM |
2388 | /* If any dynamic relocs apply to a read-only section, |
2389 | then we need a DT_TEXTREL entry. */ | |
248866a8 AM |
2390 | if ((info->flags & DF_TEXTREL) == 0) |
2391 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
2392 | (PTR) info); | |
0c715baa AM |
2393 | |
2394 | if ((info->flags & DF_TEXTREL) != 0) | |
2395 | { | |
2396 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2397 | return FALSE; |
0c715baa | 2398 | } |
252b5132 | 2399 | } |
7a2b07ff NS |
2400 | if (htab->is_vxworks |
2401 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
2402 | return FALSE; | |
252b5132 | 2403 | } |
dc810e39 | 2404 | #undef add_dynamic_entry |
252b5132 | 2405 | |
b34976b6 | 2406 | return TRUE; |
252b5132 RH |
2407 | } |
2408 | ||
67a4f2b7 AO |
2409 | static bfd_boolean |
2410 | elf_i386_always_size_sections (bfd *output_bfd, | |
2411 | struct bfd_link_info *info) | |
2412 | { | |
2413 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
2414 | ||
2415 | if (tls_sec) | |
2416 | { | |
2417 | struct elf_link_hash_entry *tlsbase; | |
2418 | ||
2419 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
2420 | "_TLS_MODULE_BASE_", | |
2421 | FALSE, FALSE, FALSE); | |
2422 | ||
2423 | if (tlsbase && tlsbase->type == STT_TLS) | |
2424 | { | |
2425 | struct bfd_link_hash_entry *bh = NULL; | |
2426 | const struct elf_backend_data *bed | |
2427 | = get_elf_backend_data (output_bfd); | |
2428 | ||
2429 | if (!(_bfd_generic_link_add_one_symbol | |
2430 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
2431 | tls_sec, 0, NULL, FALSE, | |
2432 | bed->collect, &bh))) | |
2433 | return FALSE; | |
2434 | tlsbase = (struct elf_link_hash_entry *)bh; | |
2435 | tlsbase->def_regular = 1; | |
2436 | tlsbase->other = STV_HIDDEN; | |
2437 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
2438 | } | |
2439 | } | |
2440 | ||
2441 | return TRUE; | |
2442 | } | |
2443 | ||
38701953 AM |
2444 | /* Set the correct type for an x86 ELF section. We do this by the |
2445 | section name, which is a hack, but ought to work. */ | |
2446 | ||
b34976b6 | 2447 | static bfd_boolean |
55fd94b0 AM |
2448 | elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
2449 | Elf_Internal_Shdr *hdr, | |
2450 | asection *sec) | |
38701953 AM |
2451 | { |
2452 | register const char *name; | |
2453 | ||
2454 | name = bfd_get_section_name (abfd, sec); | |
2455 | ||
2456 | /* This is an ugly, but unfortunately necessary hack that is | |
2457 | needed when producing EFI binaries on x86. It tells | |
2458 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
2459 | containing ELF relocation info. We need this hack in order to | |
2460 | be able to generate ELF binaries that can be translated into | |
2461 | EFI applications (which are essentially COFF objects). Those | |
2462 | files contain a COFF ".reloc" section inside an ELFNN object, | |
2463 | which would normally cause BFD to segfault because it would | |
2464 | attempt to interpret this section as containing relocation | |
2465 | entries for section "oc". With this hack enabled, ".reloc" | |
2466 | will be treated as a normal data section, which will avoid the | |
2467 | segfault. However, you won't be able to create an ELFNN binary | |
2468 | with a section named "oc" that needs relocations, but that's | |
2469 | the kind of ugly side-effects you get when detecting section | |
2470 | types based on their names... In practice, this limitation is | |
2471 | unlikely to bite. */ | |
2472 | if (strcmp (name, ".reloc") == 0) | |
2473 | hdr->sh_type = SHT_PROGBITS; | |
2474 | ||
b34976b6 | 2475 | return TRUE; |
38701953 AM |
2476 | } |
2477 | ||
13ae64f3 JJ |
2478 | /* Return the base VMA address which should be subtracted from real addresses |
2479 | when resolving @dtpoff relocation. | |
2480 | This is PT_TLS segment p_vaddr. */ | |
2481 | ||
2482 | static bfd_vma | |
55fd94b0 | 2483 | dtpoff_base (struct bfd_link_info *info) |
13ae64f3 | 2484 | { |
e1918d23 AM |
2485 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2486 | if (elf_hash_table (info)->tls_sec == NULL) | |
6a30718d | 2487 | return 0; |
e1918d23 | 2488 | return elf_hash_table (info)->tls_sec->vma; |
13ae64f3 JJ |
2489 | } |
2490 | ||
2491 | /* Return the relocation value for @tpoff relocation | |
2492 | if STT_TLS virtual address is ADDRESS. */ | |
2493 | ||
2494 | static bfd_vma | |
55fd94b0 | 2495 | tpoff (struct bfd_link_info *info, bfd_vma address) |
13ae64f3 | 2496 | { |
e1918d23 | 2497 | struct elf_link_hash_table *htab = elf_hash_table (info); |
13ae64f3 | 2498 | |
e1918d23 AM |
2499 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2500 | if (htab->tls_sec == NULL) | |
6a30718d | 2501 | return 0; |
e1918d23 | 2502 | return htab->tls_size + htab->tls_sec->vma - address; |
13ae64f3 JJ |
2503 | } |
2504 | ||
252b5132 RH |
2505 | /* Relocate an i386 ELF section. */ |
2506 | ||
b34976b6 | 2507 | static bfd_boolean |
55fd94b0 AM |
2508 | elf_i386_relocate_section (bfd *output_bfd, |
2509 | struct bfd_link_info *info, | |
2510 | bfd *input_bfd, | |
2511 | asection *input_section, | |
2512 | bfd_byte *contents, | |
2513 | Elf_Internal_Rela *relocs, | |
2514 | Elf_Internal_Sym *local_syms, | |
2515 | asection **local_sections) | |
252b5132 | 2516 | { |
6725bdbf | 2517 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2518 | Elf_Internal_Shdr *symtab_hdr; |
2519 | struct elf_link_hash_entry **sym_hashes; | |
2520 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 2521 | bfd_vma *local_tlsdesc_gotents; |
252b5132 RH |
2522 | Elf_Internal_Rela *rel; |
2523 | Elf_Internal_Rela *relend; | |
3348747a | 2524 | bfd_boolean is_vxworks_tls; |
252b5132 | 2525 | |
0ffa91dd NC |
2526 | BFD_ASSERT (is_i386_elf (input_bfd)); |
2527 | ||
6725bdbf | 2528 | htab = elf_i386_hash_table (info); |
0ffa91dd | 2529 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
252b5132 RH |
2530 | sym_hashes = elf_sym_hashes (input_bfd); |
2531 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
67a4f2b7 | 2532 | local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd); |
3348747a NS |
2533 | /* We have to handle relocations in vxworks .tls_vars sections |
2534 | specially, because the dynamic loader is 'weird'. */ | |
2535 | is_vxworks_tls = (htab->is_vxworks && info->shared | |
2536 | && !strcmp (input_section->output_section->name, | |
2537 | ".tls_vars")); | |
252b5132 | 2538 | |
252b5132 RH |
2539 | rel = relocs; |
2540 | relend = relocs + input_section->reloc_count; | |
2541 | for (; rel < relend; rel++) | |
2542 | { | |
13ae64f3 | 2543 | unsigned int r_type; |
252b5132 RH |
2544 | reloc_howto_type *howto; |
2545 | unsigned long r_symndx; | |
2546 | struct elf_link_hash_entry *h; | |
2547 | Elf_Internal_Sym *sym; | |
2548 | asection *sec; | |
67a4f2b7 | 2549 | bfd_vma off, offplt; |
252b5132 | 2550 | bfd_vma relocation; |
b34976b6 | 2551 | bfd_boolean unresolved_reloc; |
252b5132 | 2552 | bfd_reloc_status_type r; |
1b452ec6 | 2553 | unsigned int indx; |
13ae64f3 | 2554 | int tls_type; |
252b5132 RH |
2555 | |
2556 | r_type = ELF32_R_TYPE (rel->r_info); | |
55fd94b0 AM |
2557 | if (r_type == R_386_GNU_VTINHERIT |
2558 | || r_type == R_386_GNU_VTENTRY) | |
252b5132 | 2559 | continue; |
dc47f327 | 2560 | |
55fd94b0 | 2561 | if ((indx = r_type) >= R_386_standard |
13ae64f3 JJ |
2562 | && ((indx = r_type - R_386_ext_offset) - R_386_standard |
2563 | >= R_386_ext - R_386_standard) | |
2564 | && ((indx = r_type - R_386_tls_offset) - R_386_ext | |
2565 | >= R_386_tls - R_386_ext)) | |
252b5132 | 2566 | { |
6ba842b6 | 2567 | (*_bfd_error_handler) |
d003868e AM |
2568 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), |
2569 | input_bfd, input_section, r_type); | |
252b5132 | 2570 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 2571 | return FALSE; |
252b5132 | 2572 | } |
1b452ec6 | 2573 | howto = elf_howto_table + indx; |
252b5132 RH |
2574 | |
2575 | r_symndx = ELF32_R_SYM (rel->r_info); | |
252b5132 RH |
2576 | h = NULL; |
2577 | sym = NULL; | |
2578 | sec = NULL; | |
b34976b6 | 2579 | unresolved_reloc = FALSE; |
252b5132 RH |
2580 | if (r_symndx < symtab_hdr->sh_info) |
2581 | { | |
2582 | sym = local_syms + r_symndx; | |
2583 | sec = local_sections[r_symndx]; | |
2584 | relocation = (sec->output_section->vma | |
2585 | + sec->output_offset | |
2586 | + sym->st_value); | |
ab96bf03 AM |
2587 | |
2588 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
2589 | && ((sec->flags & SEC_MERGE) != 0 | |
2590 | || (info->relocatable | |
2591 | && sec->output_offset != 0))) | |
f8df10f4 | 2592 | { |
f8df10f4 | 2593 | bfd_vma addend; |
4a335f3d | 2594 | bfd_byte *where = contents + rel->r_offset; |
f8df10f4 | 2595 | |
4a335f3d | 2596 | switch (howto->size) |
f8df10f4 | 2597 | { |
4a335f3d AM |
2598 | case 0: |
2599 | addend = bfd_get_8 (input_bfd, where); | |
2600 | if (howto->pc_relative) | |
2601 | { | |
2602 | addend = (addend ^ 0x80) - 0x80; | |
2603 | addend += 1; | |
2604 | } | |
2605 | break; | |
2606 | case 1: | |
2607 | addend = bfd_get_16 (input_bfd, where); | |
2608 | if (howto->pc_relative) | |
2609 | { | |
2610 | addend = (addend ^ 0x8000) - 0x8000; | |
2611 | addend += 2; | |
2612 | } | |
2613 | break; | |
2614 | case 2: | |
2615 | addend = bfd_get_32 (input_bfd, where); | |
2616 | if (howto->pc_relative) | |
2617 | { | |
2618 | addend = (addend ^ 0x80000000) - 0x80000000; | |
2619 | addend += 4; | |
2620 | } | |
2621 | break; | |
2622 | default: | |
2623 | abort (); | |
f8df10f4 JJ |
2624 | } |
2625 | ||
ab96bf03 AM |
2626 | if (info->relocatable) |
2627 | addend += sec->output_offset; | |
2628 | else | |
2629 | { | |
2630 | asection *msec = sec; | |
2631 | addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, | |
2632 | addend); | |
2633 | addend -= relocation; | |
2634 | addend += msec->output_section->vma + msec->output_offset; | |
2635 | } | |
4a335f3d AM |
2636 | |
2637 | switch (howto->size) | |
2638 | { | |
2639 | case 0: | |
16a10388 | 2640 | /* FIXME: overflow checks. */ |
4a335f3d AM |
2641 | if (howto->pc_relative) |
2642 | addend -= 1; | |
2643 | bfd_put_8 (input_bfd, addend, where); | |
4a335f3d AM |
2644 | break; |
2645 | case 1: | |
2646 | if (howto->pc_relative) | |
2647 | addend -= 2; | |
2648 | bfd_put_16 (input_bfd, addend, where); | |
4a335f3d AM |
2649 | break; |
2650 | case 2: | |
2651 | if (howto->pc_relative) | |
2652 | addend -= 4; | |
2653 | bfd_put_32 (input_bfd, addend, where); | |
2654 | break; | |
2655 | } | |
f8df10f4 | 2656 | } |
252b5132 RH |
2657 | } |
2658 | else | |
2659 | { | |
560e09e9 | 2660 | bfd_boolean warned; |
ffb2e45b | 2661 | |
b2a8e766 AM |
2662 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2663 | r_symndx, symtab_hdr, sym_hashes, | |
2664 | h, sec, relocation, | |
2665 | unresolved_reloc, warned); | |
252b5132 RH |
2666 | } |
2667 | ||
ab96bf03 | 2668 | if (sec != NULL && elf_discarded_section (sec)) |
9635fe29 | 2669 | { |
ab96bf03 AM |
2670 | /* For relocs against symbols from removed linkonce sections, |
2671 | or sections discarded by a linker script, we just want the | |
2672 | section contents zeroed. Avoid any special processing. */ | |
b1e24c02 | 2673 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); |
ab96bf03 AM |
2674 | rel->r_info = 0; |
2675 | rel->r_addend = 0; | |
b1e24c02 | 2676 | continue; |
9635fe29 AM |
2677 | } |
2678 | ||
ab96bf03 AM |
2679 | if (info->relocatable) |
2680 | continue; | |
2681 | ||
252b5132 RH |
2682 | switch (r_type) |
2683 | { | |
2684 | case R_386_GOT32: | |
2685 | /* Relocation is to the entry for this symbol in the global | |
2686 | offset table. */ | |
ffb2e45b AM |
2687 | if (htab->sgot == NULL) |
2688 | abort (); | |
252b5132 RH |
2689 | |
2690 | if (h != NULL) | |
2691 | { | |
b34976b6 | 2692 | bfd_boolean dyn; |
252b5132 RH |
2693 | |
2694 | off = h->got.offset; | |
ebe50bae | 2695 | dyn = htab->elf.dynamic_sections_created; |
26e41594 | 2696 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
252b5132 | 2697 | || (info->shared |
586119b3 | 2698 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
ef5aade5 L |
2699 | || (ELF_ST_VISIBILITY (h->other) |
2700 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
2701 | { |
2702 | /* This is actually a static link, or it is a | |
2703 | -Bsymbolic link and the symbol is defined | |
2704 | locally, or the symbol was forced to be local | |
2705 | because of a version file. We must initialize | |
2706 | this entry in the global offset table. Since the | |
2707 | offset must always be a multiple of 4, we use the | |
2708 | least significant bit to record whether we have | |
2709 | initialized it already. | |
2710 | ||
2711 | When doing a dynamic link, we create a .rel.got | |
2712 | relocation entry to initialize the value. This | |
2713 | is done in the finish_dynamic_symbol routine. */ | |
2714 | if ((off & 1) != 0) | |
2715 | off &= ~1; | |
2716 | else | |
2717 | { | |
2718 | bfd_put_32 (output_bfd, relocation, | |
6725bdbf | 2719 | htab->sgot->contents + off); |
252b5132 RH |
2720 | h->got.offset |= 1; |
2721 | } | |
2722 | } | |
8c694914 | 2723 | else |
b34976b6 | 2724 | unresolved_reloc = FALSE; |
252b5132 RH |
2725 | } |
2726 | else | |
2727 | { | |
ffb2e45b AM |
2728 | if (local_got_offsets == NULL) |
2729 | abort (); | |
252b5132 RH |
2730 | |
2731 | off = local_got_offsets[r_symndx]; | |
2732 | ||
2733 | /* The offset must always be a multiple of 4. We use | |
83be169b AM |
2734 | the least significant bit to record whether we have |
2735 | already generated the necessary reloc. */ | |
252b5132 RH |
2736 | if ((off & 1) != 0) |
2737 | off &= ~1; | |
2738 | else | |
2739 | { | |
6725bdbf AM |
2740 | bfd_put_32 (output_bfd, relocation, |
2741 | htab->sgot->contents + off); | |
252b5132 RH |
2742 | |
2743 | if (info->shared) | |
2744 | { | |
947216bf AM |
2745 | asection *s; |
2746 | Elf_Internal_Rela outrel; | |
2747 | bfd_byte *loc; | |
252b5132 | 2748 | |
947216bf AM |
2749 | s = htab->srelgot; |
2750 | if (s == NULL) | |
ffb2e45b | 2751 | abort (); |
252b5132 | 2752 | |
6725bdbf AM |
2753 | outrel.r_offset = (htab->sgot->output_section->vma |
2754 | + htab->sgot->output_offset | |
252b5132 RH |
2755 | + off); |
2756 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
947216bf AM |
2757 | loc = s->contents; |
2758 | loc += s->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 2759 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2760 | } |
2761 | ||
2762 | local_got_offsets[r_symndx] |= 1; | |
2763 | } | |
252b5132 RH |
2764 | } |
2765 | ||
ffb2e45b AM |
2766 | if (off >= (bfd_vma) -2) |
2767 | abort (); | |
2768 | ||
8c37241b JJ |
2769 | relocation = htab->sgot->output_section->vma |
2770 | + htab->sgot->output_offset + off | |
2771 | - htab->sgotplt->output_section->vma | |
2772 | - htab->sgotplt->output_offset; | |
252b5132 RH |
2773 | break; |
2774 | ||
2775 | case R_386_GOTOFF: | |
2776 | /* Relocation is relative to the start of the global offset | |
2777 | table. */ | |
2778 | ||
90f487df L |
2779 | /* Check to make sure it isn't a protected function symbol |
2780 | for shared library since it may not be local when used | |
41bed6dd L |
2781 | as function address. We also need to make sure that a |
2782 | symbol is defined locally. */ | |
2783 | if (info->shared && h) | |
90f487df | 2784 | { |
41bed6dd L |
2785 | if (!h->def_regular) |
2786 | { | |
2787 | const char *v; | |
2788 | ||
2789 | switch (ELF_ST_VISIBILITY (h->other)) | |
2790 | { | |
2791 | case STV_HIDDEN: | |
2792 | v = _("hidden symbol"); | |
2793 | break; | |
2794 | case STV_INTERNAL: | |
2795 | v = _("internal symbol"); | |
2796 | break; | |
2797 | case STV_PROTECTED: | |
2798 | v = _("protected symbol"); | |
2799 | break; | |
2800 | default: | |
2801 | v = _("symbol"); | |
2802 | break; | |
2803 | } | |
2804 | ||
2805 | (*_bfd_error_handler) | |
2806 | (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"), | |
2807 | input_bfd, v, h->root.root.string); | |
2808 | bfd_set_error (bfd_error_bad_value); | |
2809 | return FALSE; | |
2810 | } | |
2811 | else if (!info->executable | |
2812 | && h->type == STT_FUNC | |
2813 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
2814 | { | |
2815 | (*_bfd_error_handler) | |
2816 | (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"), | |
2817 | input_bfd, h->root.root.string); | |
2818 | bfd_set_error (bfd_error_bad_value); | |
2819 | return FALSE; | |
2820 | } | |
90f487df L |
2821 | } |
2822 | ||
8c37241b JJ |
2823 | /* Note that sgot is not involved in this |
2824 | calculation. We always want the start of .got.plt. If we | |
2825 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
252b5132 RH |
2826 | permitted by the ABI, we might have to change this |
2827 | calculation. */ | |
8c37241b JJ |
2828 | relocation -= htab->sgotplt->output_section->vma |
2829 | + htab->sgotplt->output_offset; | |
252b5132 RH |
2830 | break; |
2831 | ||
2832 | case R_386_GOTPC: | |
2833 | /* Use global offset table as symbol value. */ | |
8c37241b JJ |
2834 | relocation = htab->sgotplt->output_section->vma |
2835 | + htab->sgotplt->output_offset; | |
b34976b6 | 2836 | unresolved_reloc = FALSE; |
252b5132 RH |
2837 | break; |
2838 | ||
2839 | case R_386_PLT32: | |
2840 | /* Relocation is to the entry for this symbol in the | |
2841 | procedure linkage table. */ | |
2842 | ||
dd5724d5 | 2843 | /* Resolve a PLT32 reloc against a local symbol directly, |
83be169b | 2844 | without using the procedure linkage table. */ |
252b5132 RH |
2845 | if (h == NULL) |
2846 | break; | |
2847 | ||
dd5724d5 | 2848 | if (h->plt.offset == (bfd_vma) -1 |
6725bdbf | 2849 | || htab->splt == NULL) |
252b5132 RH |
2850 | { |
2851 | /* We didn't make a PLT entry for this symbol. This | |
83be169b AM |
2852 | happens when statically linking PIC code, or when |
2853 | using -Bsymbolic. */ | |
252b5132 RH |
2854 | break; |
2855 | } | |
2856 | ||
6725bdbf AM |
2857 | relocation = (htab->splt->output_section->vma |
2858 | + htab->splt->output_offset | |
252b5132 | 2859 | + h->plt.offset); |
b34976b6 | 2860 | unresolved_reloc = FALSE; |
252b5132 RH |
2861 | break; |
2862 | ||
2863 | case R_386_32: | |
2864 | case R_386_PC32: | |
3348747a NS |
2865 | if ((input_section->flags & SEC_ALLOC) == 0 |
2866 | || is_vxworks_tls) | |
ec338859 AM |
2867 | break; |
2868 | ||
12d0ee4a | 2869 | if ((info->shared |
ef5aade5 L |
2870 | && (h == NULL |
2871 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2872 | || h->root.type != bfd_link_hash_undefweak) | |
12d0ee4a | 2873 | && (r_type != R_386_PC32 |
f6c52c13 | 2874 | || !SYMBOL_CALLS_LOCAL (info, h))) |
a23b6845 AM |
2875 | || (ELIMINATE_COPY_RELOCS |
2876 | && !info->shared | |
12d0ee4a AM |
2877 | && h != NULL |
2878 | && h->dynindx != -1 | |
f5385ebf AM |
2879 | && !h->non_got_ref |
2880 | && ((h->def_dynamic | |
2881 | && !h->def_regular) | |
28d0b90e AM |
2882 | || h->root.type == bfd_link_hash_undefweak |
2883 | || h->root.type == bfd_link_hash_undefined))) | |
252b5132 | 2884 | { |
947216bf AM |
2885 | Elf_Internal_Rela outrel; |
2886 | bfd_byte *loc; | |
b34976b6 | 2887 | bfd_boolean skip, relocate; |
0c715baa | 2888 | asection *sreloc; |
252b5132 RH |
2889 | |
2890 | /* When generating a shared object, these relocations | |
2891 | are copied into the output file to be resolved at run | |
2892 | time. */ | |
2893 | ||
b34976b6 AM |
2894 | skip = FALSE; |
2895 | relocate = FALSE; | |
252b5132 | 2896 | |
c629eae0 JJ |
2897 | outrel.r_offset = |
2898 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2899 | rel->r_offset); | |
2900 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2901 | skip = TRUE; |
0bb2d96a | 2902 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2903 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
2904 | outrel.r_offset += (input_section->output_section->vma |
2905 | + input_section->output_offset); | |
2906 | ||
2907 | if (skip) | |
0bb2d96a | 2908 | memset (&outrel, 0, sizeof outrel); |
5a15f56f AM |
2909 | else if (h != NULL |
2910 | && h->dynindx != -1 | |
2911 | && (r_type == R_386_PC32 | |
2912 | || !info->shared | |
55255dae | 2913 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 2914 | || !h->def_regular)) |
0bb2d96a | 2915 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
2916 | else |
2917 | { | |
5a15f56f | 2918 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 2919 | relocate = TRUE; |
5a15f56f | 2920 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
252b5132 RH |
2921 | } |
2922 | ||
0c715baa AM |
2923 | sreloc = elf_section_data (input_section)->sreloc; |
2924 | if (sreloc == NULL) | |
2925 | abort (); | |
2926 | ||
947216bf AM |
2927 | loc = sreloc->contents; |
2928 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
0c715baa | 2929 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2930 | |
2931 | /* If this reloc is against an external symbol, we do | |
2932 | not want to fiddle with the addend. Otherwise, we | |
2933 | need to include the symbol value so that it becomes | |
2934 | an addend for the dynamic reloc. */ | |
2935 | if (! relocate) | |
2936 | continue; | |
2937 | } | |
252b5132 RH |
2938 | break; |
2939 | ||
37e55690 JJ |
2940 | case R_386_TLS_IE: |
2941 | if (info->shared) | |
2942 | { | |
947216bf AM |
2943 | Elf_Internal_Rela outrel; |
2944 | bfd_byte *loc; | |
37e55690 | 2945 | asection *sreloc; |
37e55690 JJ |
2946 | |
2947 | outrel.r_offset = rel->r_offset | |
2948 | + input_section->output_section->vma | |
2949 | + input_section->output_offset; | |
2950 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
2951 | sreloc = elf_section_data (input_section)->sreloc; | |
2952 | if (sreloc == NULL) | |
2953 | abort (); | |
947216bf AM |
2954 | loc = sreloc->contents; |
2955 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
2956 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2957 | } | |
2958 | /* Fall through */ | |
2959 | ||
13ae64f3 | 2960 | case R_386_TLS_GD: |
67a4f2b7 AO |
2961 | case R_386_TLS_GOTDESC: |
2962 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 2963 | case R_386_TLS_IE_32: |
37e55690 | 2964 | case R_386_TLS_GOTIE: |
13ae64f3 JJ |
2965 | tls_type = GOT_UNKNOWN; |
2966 | if (h == NULL && local_got_offsets) | |
2967 | tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx]; | |
2968 | else if (h != NULL) | |
142411ca | 2969 | tls_type = elf_i386_hash_entry(h)->tls_type; |
37e55690 JJ |
2970 | if (tls_type == GOT_TLS_IE) |
2971 | tls_type = GOT_TLS_IE_NEG; | |
142411ca L |
2972 | |
2973 | if (! elf_i386_tls_transition (info, input_bfd, | |
2974 | input_section, contents, | |
2975 | symtab_hdr, sym_hashes, | |
2976 | &r_type, tls_type, rel, | |
2977 | relend, h)) | |
2978 | return FALSE; | |
13ae64f3 JJ |
2979 | |
2980 | if (r_type == R_386_TLS_LE_32) | |
2981 | { | |
82e51918 | 2982 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
2983 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
2984 | { | |
142411ca | 2985 | unsigned int type; |
13ae64f3 JJ |
2986 | bfd_vma roff; |
2987 | ||
2988 | /* GD->LE transition. */ | |
13ae64f3 | 2989 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
2990 | if (type == 0x04) |
2991 | { | |
2992 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
2993 | Change it into: | |
2994 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2995 | (6 byte form of subl). */ | |
13ae64f3 JJ |
2996 | memcpy (contents + rel->r_offset - 3, |
2997 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
142411ca | 2998 | roff = rel->r_offset + 5; |
13ae64f3 JJ |
2999 | } |
3000 | else | |
3001 | { | |
142411ca L |
3002 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop |
3003 | Change it into: | |
3004 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
3005 | (6 byte form of subl). */ | |
3006 | memcpy (contents + rel->r_offset - 2, | |
3007 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
3008 | roff = rel->r_offset + 6; | |
13ae64f3 JJ |
3009 | } |
3010 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
3011 | contents + roff); | |
a3fadc9a | 3012 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
3013 | rel++; |
3014 | continue; | |
3015 | } | |
67a4f2b7 AO |
3016 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
3017 | { | |
3018 | /* GDesc -> LE transition. | |
3019 | It's originally something like: | |
3020 | leal x@tlsdesc(%ebx), %eax | |
3021 | ||
3022 | leal x@ntpoff, %eax | |
3023 | ||
3024 | Registers other than %eax may be set up here. */ | |
3025 | ||
142411ca | 3026 | unsigned int val; |
67a4f2b7 AO |
3027 | bfd_vma roff; |
3028 | ||
67a4f2b7 | 3029 | roff = rel->r_offset; |
67a4f2b7 | 3030 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
3031 | |
3032 | /* Now modify the instruction as appropriate. */ | |
3033 | /* aoliva FIXME: remove the above and xor the byte | |
3034 | below with 0x86. */ | |
3035 | bfd_put_8 (output_bfd, val ^ 0x86, | |
3036 | contents + roff - 1); | |
3037 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
3038 | contents + roff); | |
3039 | continue; | |
3040 | } | |
3041 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
3042 | { | |
3043 | /* GDesc -> LE transition. | |
3044 | It's originally: | |
3045 | call *(%eax) | |
3046 | Turn it into: | |
142411ca | 3047 | xchg %ax,%ax */ |
67a4f2b7 | 3048 | |
67a4f2b7 | 3049 | bfd_vma roff; |
142411ca | 3050 | |
67a4f2b7 | 3051 | roff = rel->r_offset; |
10efb593 | 3052 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
3053 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3054 | continue; | |
3055 | } | |
37e55690 | 3056 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE) |
13ae64f3 | 3057 | { |
142411ca | 3058 | unsigned int val; |
13ae64f3 JJ |
3059 | |
3060 | /* IE->LE transition: | |
37e55690 JJ |
3061 | Originally it can be one of: |
3062 | movl foo, %eax | |
3063 | movl foo, %reg | |
3064 | addl foo, %reg | |
3065 | We change it into: | |
3066 | movl $foo, %eax | |
3067 | movl $foo, %reg | |
3068 | addl $foo, %reg. */ | |
37e55690 | 3069 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
37e55690 JJ |
3070 | if (val == 0xa1) |
3071 | { | |
3072 | /* movl foo, %eax. */ | |
55fd94b0 AM |
3073 | bfd_put_8 (output_bfd, 0xb8, |
3074 | contents + rel->r_offset - 1); | |
37e55690 | 3075 | } |
299bf759 | 3076 | else |
37e55690 | 3077 | { |
142411ca L |
3078 | unsigned int type; |
3079 | ||
55fd94b0 AM |
3080 | type = bfd_get_8 (input_bfd, |
3081 | contents + rel->r_offset - 2); | |
299bf759 | 3082 | switch (type) |
26e41594 | 3083 | { |
299bf759 L |
3084 | case 0x8b: |
3085 | /* movl */ | |
299bf759 L |
3086 | bfd_put_8 (output_bfd, 0xc7, |
3087 | contents + rel->r_offset - 2); | |
3088 | bfd_put_8 (output_bfd, | |
3089 | 0xc0 | ((val >> 3) & 7), | |
3090 | contents + rel->r_offset - 1); | |
3091 | break; | |
3092 | case 0x03: | |
3093 | /* addl */ | |
299bf759 L |
3094 | bfd_put_8 (output_bfd, 0x81, |
3095 | contents + rel->r_offset - 2); | |
3096 | bfd_put_8 (output_bfd, | |
3097 | 0xc0 | ((val >> 3) & 7), | |
3098 | contents + rel->r_offset - 1); | |
3099 | break; | |
3100 | default: | |
3101 | BFD_FAIL (); | |
3102 | break; | |
26e41594 | 3103 | } |
37e55690 | 3104 | } |
37e55690 JJ |
3105 | bfd_put_32 (output_bfd, -tpoff (info, relocation), |
3106 | contents + rel->r_offset); | |
3107 | continue; | |
3108 | } | |
3109 | else | |
3110 | { | |
3111 | unsigned int val, type; | |
3112 | ||
3113 | /* {IE_32,GOTIE}->LE transition: | |
3114 | Originally it can be one of: | |
13ae64f3 | 3115 | subl foo(%reg1), %reg2 |
13ae64f3 | 3116 | movl foo(%reg1), %reg2 |
37e55690 | 3117 | addl foo(%reg1), %reg2 |
13ae64f3 JJ |
3118 | We change it into: |
3119 | subl $foo, %reg2 | |
37e55690 JJ |
3120 | movl $foo, %reg2 (6 byte form) |
3121 | addl $foo, %reg2. */ | |
13ae64f3 JJ |
3122 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
3123 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
13ae64f3 JJ |
3124 | if (type == 0x8b) |
3125 | { | |
3126 | /* movl */ | |
13ae64f3 JJ |
3127 | bfd_put_8 (output_bfd, 0xc7, |
3128 | contents + rel->r_offset - 2); | |
3129 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3130 | contents + rel->r_offset - 1); | |
3131 | } | |
3132 | else if (type == 0x2b) | |
3133 | { | |
3134 | /* subl */ | |
13ae64f3 JJ |
3135 | bfd_put_8 (output_bfd, 0x81, |
3136 | contents + rel->r_offset - 2); | |
3137 | bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), | |
3138 | contents + rel->r_offset - 1); | |
3139 | } | |
37e55690 JJ |
3140 | else if (type == 0x03) |
3141 | { | |
3142 | /* addl */ | |
3143 | bfd_put_8 (output_bfd, 0x81, | |
3144 | contents + rel->r_offset - 2); | |
3145 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3146 | contents + rel->r_offset - 1); | |
3147 | } | |
13ae64f3 JJ |
3148 | else |
3149 | BFD_FAIL (); | |
37e55690 JJ |
3150 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE) |
3151 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
3152 | contents + rel->r_offset); | |
3153 | else | |
3154 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
3155 | contents + rel->r_offset); | |
13ae64f3 JJ |
3156 | continue; |
3157 | } | |
3158 | } | |
3159 | ||
3160 | if (htab->sgot == NULL) | |
3161 | abort (); | |
3162 | ||
3163 | if (h != NULL) | |
67a4f2b7 AO |
3164 | { |
3165 | off = h->got.offset; | |
3166 | offplt = elf_i386_hash_entry (h)->tlsdesc_got; | |
3167 | } | |
13ae64f3 JJ |
3168 | else |
3169 | { | |
3170 | if (local_got_offsets == NULL) | |
3171 | abort (); | |
3172 | ||
3173 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3174 | offplt = local_tlsdesc_gotents[r_symndx]; |
13ae64f3 JJ |
3175 | } |
3176 | ||
3177 | if ((off & 1) != 0) | |
3178 | off &= ~1; | |
26e41594 | 3179 | else |
13ae64f3 | 3180 | { |
947216bf AM |
3181 | Elf_Internal_Rela outrel; |
3182 | bfd_byte *loc; | |
13ae64f3 | 3183 | int dr_type, indx; |
67a4f2b7 | 3184 | asection *sreloc; |
13ae64f3 JJ |
3185 | |
3186 | if (htab->srelgot == NULL) | |
3187 | abort (); | |
3188 | ||
67a4f2b7 AO |
3189 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
3190 | ||
3191 | if (GOT_TLS_GDESC_P (tls_type)) | |
3192 | { | |
3193 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC); | |
3194 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8 | |
3195 | <= htab->sgotplt->size); | |
3196 | outrel.r_offset = (htab->sgotplt->output_section->vma | |
3197 | + htab->sgotplt->output_offset | |
3198 | + offplt | |
3199 | + htab->sgotplt_jump_table_size); | |
3200 | sreloc = htab->srelplt; | |
3201 | loc = sreloc->contents; | |
5ae0bfb6 RS |
3202 | loc += (htab->next_tls_desc_index++ |
3203 | * sizeof (Elf32_External_Rel)); | |
67a4f2b7 AO |
3204 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) |
3205 | <= sreloc->contents + sreloc->size); | |
3206 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
3207 | if (indx == 0) | |
3208 | { | |
3209 | BFD_ASSERT (! unresolved_reloc); | |
3210 | bfd_put_32 (output_bfd, | |
3211 | relocation - dtpoff_base (info), | |
3212 | htab->sgotplt->contents + offplt | |
3213 | + htab->sgotplt_jump_table_size + 4); | |
3214 | } | |
3215 | else | |
3216 | { | |
3217 | bfd_put_32 (output_bfd, 0, | |
3218 | htab->sgotplt->contents + offplt | |
3219 | + htab->sgotplt_jump_table_size + 4); | |
3220 | } | |
3221 | } | |
3222 | ||
3223 | sreloc = htab->srelgot; | |
3224 | ||
13ae64f3 JJ |
3225 | outrel.r_offset = (htab->sgot->output_section->vma |
3226 | + htab->sgot->output_offset + off); | |
3227 | ||
67a4f2b7 | 3228 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 | 3229 | dr_type = R_386_TLS_DTPMOD32; |
67a4f2b7 AO |
3230 | else if (GOT_TLS_GDESC_P (tls_type)) |
3231 | goto dr_done; | |
37e55690 JJ |
3232 | else if (tls_type == GOT_TLS_IE_POS) |
3233 | dr_type = R_386_TLS_TPOFF; | |
13ae64f3 JJ |
3234 | else |
3235 | dr_type = R_386_TLS_TPOFF32; | |
67a4f2b7 | 3236 | |
37e55690 JJ |
3237 | if (dr_type == R_386_TLS_TPOFF && indx == 0) |
3238 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
3239 | htab->sgot->contents + off); | |
3240 | else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) | |
c5c1f40c | 3241 | bfd_put_32 (output_bfd, dtpoff_base (info) - relocation, |
c366c25e | 3242 | htab->sgot->contents + off); |
67a4f2b7 | 3243 | else if (dr_type != R_386_TLS_DESC) |
c366c25e JJ |
3244 | bfd_put_32 (output_bfd, 0, |
3245 | htab->sgot->contents + off); | |
13ae64f3 | 3246 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
67a4f2b7 AO |
3247 | |
3248 | loc = sreloc->contents; | |
3249 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
3250 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) | |
3251 | <= sreloc->contents + sreloc->size); | |
13ae64f3 JJ |
3252 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3253 | ||
67a4f2b7 | 3254 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 JJ |
3255 | { |
3256 | if (indx == 0) | |
3257 | { | |
82e51918 | 3258 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
3259 | bfd_put_32 (output_bfd, |
3260 | relocation - dtpoff_base (info), | |
3261 | htab->sgot->contents + off + 4); | |
3262 | } | |
3263 | else | |
3264 | { | |
3265 | bfd_put_32 (output_bfd, 0, | |
3266 | htab->sgot->contents + off + 4); | |
3267 | outrel.r_info = ELF32_R_INFO (indx, | |
3268 | R_386_TLS_DTPOFF32); | |
3269 | outrel.r_offset += 4; | |
67a4f2b7 | 3270 | sreloc->reloc_count++; |
947216bf | 3271 | loc += sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
3272 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) |
3273 | <= sreloc->contents + sreloc->size); | |
947216bf | 3274 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
13ae64f3 JJ |
3275 | } |
3276 | } | |
37e55690 JJ |
3277 | else if (tls_type == GOT_TLS_IE_BOTH) |
3278 | { | |
3279 | bfd_put_32 (output_bfd, | |
3280 | indx == 0 ? relocation - dtpoff_base (info) : 0, | |
3281 | htab->sgot->contents + off + 4); | |
3282 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
3283 | outrel.r_offset += 4; | |
67a4f2b7 | 3284 | sreloc->reloc_count++; |
947216bf | 3285 | loc += sizeof (Elf32_External_Rel); |
37e55690 JJ |
3286 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3287 | } | |
13ae64f3 | 3288 | |
67a4f2b7 | 3289 | dr_done: |
13ae64f3 JJ |
3290 | if (h != NULL) |
3291 | h->got.offset |= 1; | |
3292 | else | |
3293 | local_got_offsets[r_symndx] |= 1; | |
3294 | } | |
3295 | ||
67a4f2b7 AO |
3296 | if (off >= (bfd_vma) -2 |
3297 | && ! GOT_TLS_GDESC_P (tls_type)) | |
13ae64f3 | 3298 | abort (); |
67a4f2b7 AO |
3299 | if (r_type == R_386_TLS_GOTDESC |
3300 | || r_type == R_386_TLS_DESC_CALL) | |
3301 | { | |
3302 | relocation = htab->sgotplt_jump_table_size + offplt; | |
3303 | unresolved_reloc = FALSE; | |
3304 | } | |
3305 | else if (r_type == ELF32_R_TYPE (rel->r_info)) | |
13ae64f3 | 3306 | { |
8c37241b JJ |
3307 | bfd_vma g_o_t = htab->sgotplt->output_section->vma |
3308 | + htab->sgotplt->output_offset; | |
3309 | relocation = htab->sgot->output_section->vma | |
67a4f2b7 | 3310 | + htab->sgot->output_offset + off - g_o_t; |
37e55690 JJ |
3311 | if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) |
3312 | && tls_type == GOT_TLS_IE_BOTH) | |
3313 | relocation += 4; | |
3314 | if (r_type == R_386_TLS_IE) | |
8c37241b | 3315 | relocation += g_o_t; |
b34976b6 | 3316 | unresolved_reloc = FALSE; |
13ae64f3 | 3317 | } |
67a4f2b7 | 3318 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
13ae64f3 JJ |
3319 | { |
3320 | unsigned int val, type; | |
3321 | bfd_vma roff; | |
3322 | ||
3323 | /* GD->IE transition. */ | |
13ae64f3 | 3324 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
3325 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
3326 | if (type == 0x04) | |
3327 | { | |
3328 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
3329 | Change it into: | |
3330 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 | 3331 | val >>= 3; |
142411ca | 3332 | roff = rel->r_offset - 3; |
13ae64f3 JJ |
3333 | } |
3334 | else | |
3335 | { | |
3336 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
3337 | Change it into: | |
3338 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 JJ |
3339 | roff = rel->r_offset - 2; |
3340 | } | |
3341 | memcpy (contents + roff, | |
3342 | "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); | |
3343 | contents[roff + 7] = 0x80 | (val & 7); | |
37e55690 JJ |
3344 | /* If foo is used only with foo@gotntpoff(%reg) and |
3345 | foo@indntpoff, but not with foo@gottpoff(%reg), change | |
3346 | subl $foo@gottpoff(%reg), %eax | |
3347 | into: | |
3348 | addl $foo@gotntpoff(%reg), %eax. */ | |
ebcfb3c0 JJ |
3349 | if (tls_type == GOT_TLS_IE_POS) |
3350 | contents[roff + 6] = 0x03; | |
8c37241b JJ |
3351 | bfd_put_32 (output_bfd, |
3352 | htab->sgot->output_section->vma | |
3353 | + htab->sgot->output_offset + off | |
3354 | - htab->sgotplt->output_section->vma | |
3355 | - htab->sgotplt->output_offset, | |
13ae64f3 JJ |
3356 | contents + roff + 8); |
3357 | /* Skip R_386_PLT32. */ | |
3358 | rel++; | |
3359 | continue; | |
3360 | } | |
67a4f2b7 AO |
3361 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
3362 | { | |
3363 | /* GDesc -> IE transition. | |
3364 | It's originally something like: | |
3365 | leal x@tlsdesc(%ebx), %eax | |
3366 | ||
3367 | Change it to: | |
142411ca | 3368 | movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax |
67a4f2b7 AO |
3369 | or: |
3370 | movl x@gottpoff(%ebx), %eax # before negl %eax | |
3371 | ||
3372 | Registers other than %eax may be set up here. */ | |
3373 | ||
67a4f2b7 AO |
3374 | bfd_vma roff; |
3375 | ||
3376 | /* First, make sure it's a leal adding ebx to a 32-bit | |
3377 | offset into any register, although it's probably | |
3378 | almost always going to be eax. */ | |
3379 | roff = rel->r_offset; | |
67a4f2b7 AO |
3380 | |
3381 | /* Now modify the instruction as appropriate. */ | |
3382 | /* To turn a leal into a movl in the form we use it, it | |
3383 | suffices to change the first byte from 0x8d to 0x8b. | |
3384 | aoliva FIXME: should we decide to keep the leal, all | |
3385 | we have to do is remove the statement below, and | |
3386 | adjust the relaxation of R_386_TLS_DESC_CALL. */ | |
3387 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
3388 | ||
3389 | if (tls_type == GOT_TLS_IE_BOTH) | |
3390 | off += 4; | |
3391 | ||
3392 | bfd_put_32 (output_bfd, | |
3393 | htab->sgot->output_section->vma | |
3394 | + htab->sgot->output_offset + off | |
3395 | - htab->sgotplt->output_section->vma | |
3396 | - htab->sgotplt->output_offset, | |
3397 | contents + roff); | |
3398 | continue; | |
3399 | } | |
3400 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
3401 | { | |
3402 | /* GDesc -> IE transition. | |
3403 | It's originally: | |
3404 | call *(%eax) | |
3405 | ||
3406 | Change it to: | |
142411ca | 3407 | xchg %ax,%ax |
67a4f2b7 AO |
3408 | or |
3409 | negl %eax | |
3410 | depending on how we transformed the TLS_GOTDESC above. | |
3411 | */ | |
3412 | ||
67a4f2b7 AO |
3413 | bfd_vma roff; |
3414 | ||
67a4f2b7 | 3415 | roff = rel->r_offset; |
67a4f2b7 AO |
3416 | |
3417 | /* Now modify the instruction as appropriate. */ | |
3418 | if (tls_type != GOT_TLS_IE_NEG) | |
3419 | { | |
10efb593 L |
3420 | /* xchg %ax,%ax */ |
3421 | bfd_put_8 (output_bfd, 0x66, contents + roff); | |
67a4f2b7 AO |
3422 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3423 | } | |
3424 | else | |
3425 | { | |
3426 | /* negl %eax */ | |
3427 | bfd_put_8 (output_bfd, 0xf7, contents + roff); | |
3428 | bfd_put_8 (output_bfd, 0xd8, contents + roff + 1); | |
3429 | } | |
3430 | ||
3431 | continue; | |
3432 | } | |
3433 | else | |
3434 | BFD_ASSERT (FALSE); | |
13ae64f3 JJ |
3435 | break; |
3436 | ||
3437 | case R_386_TLS_LDM: | |
142411ca L |
3438 | if (! elf_i386_tls_transition (info, input_bfd, |
3439 | input_section, contents, | |
3440 | symtab_hdr, sym_hashes, | |
3441 | &r_type, GOT_UNKNOWN, rel, | |
3442 | relend, h)) | |
3443 | return FALSE; | |
13ae64f3 | 3444 | |
142411ca L |
3445 | if (r_type != R_386_TLS_LDM) |
3446 | { | |
13ae64f3 | 3447 | /* LD->LE transition: |
13ae64f3 JJ |
3448 | leal foo(%reg), %eax; call ___tls_get_addr. |
3449 | We change it into: | |
3450 | movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */ | |
142411ca | 3451 | BFD_ASSERT (r_type == R_386_TLS_LE_32); |
13ae64f3 JJ |
3452 | memcpy (contents + rel->r_offset - 2, |
3453 | "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); | |
a3fadc9a | 3454 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
3455 | rel++; |
3456 | continue; | |
3457 | } | |
3458 | ||
3459 | if (htab->sgot == NULL) | |
3460 | abort (); | |
3461 | ||
3462 | off = htab->tls_ldm_got.offset; | |
3463 | if (off & 1) | |
3464 | off &= ~1; | |
3465 | else | |
3466 | { | |
947216bf AM |
3467 | Elf_Internal_Rela outrel; |
3468 | bfd_byte *loc; | |
13ae64f3 JJ |
3469 | |
3470 | if (htab->srelgot == NULL) | |
3471 | abort (); | |
3472 | ||
3473 | outrel.r_offset = (htab->sgot->output_section->vma | |
3474 | + htab->sgot->output_offset + off); | |
3475 | ||
3476 | bfd_put_32 (output_bfd, 0, | |
3477 | htab->sgot->contents + off); | |
3478 | bfd_put_32 (output_bfd, 0, | |
3479 | htab->sgot->contents + off + 4); | |
3480 | outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); | |
947216bf AM |
3481 | loc = htab->srelgot->contents; |
3482 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
3483 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3484 | htab->tls_ldm_got.offset |= 1; | |
3485 | } | |
8c37241b JJ |
3486 | relocation = htab->sgot->output_section->vma |
3487 | + htab->sgot->output_offset + off | |
3488 | - htab->sgotplt->output_section->vma | |
3489 | - htab->sgotplt->output_offset; | |
b34976b6 | 3490 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
3491 | break; |
3492 | ||
3493 | case R_386_TLS_LDO_32: | |
a45bb67d | 3494 | if (info->shared || (input_section->flags & SEC_CODE) == 0) |
13ae64f3 JJ |
3495 | relocation -= dtpoff_base (info); |
3496 | else | |
3497 | /* When converting LDO to LE, we must negate. */ | |
3498 | relocation = -tpoff (info, relocation); | |
3499 | break; | |
3500 | ||
3501 | case R_386_TLS_LE_32: | |
13ae64f3 | 3502 | case R_386_TLS_LE: |
37e55690 JJ |
3503 | if (info->shared) |
3504 | { | |
947216bf | 3505 | Elf_Internal_Rela outrel; |
37e55690 | 3506 | asection *sreloc; |
947216bf | 3507 | bfd_byte *loc; |
37e55690 JJ |
3508 | int indx; |
3509 | ||
3510 | outrel.r_offset = rel->r_offset | |
3511 | + input_section->output_section->vma | |
3512 | + input_section->output_offset; | |
3513 | if (h != NULL && h->dynindx != -1) | |
3514 | indx = h->dynindx; | |
3515 | else | |
3516 | indx = 0; | |
3517 | if (r_type == R_386_TLS_LE_32) | |
3518 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); | |
3519 | else | |
3520 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
3521 | sreloc = elf_section_data (input_section)->sreloc; | |
3522 | if (sreloc == NULL) | |
3523 | abort (); | |
947216bf AM |
3524 | loc = sreloc->contents; |
3525 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
3526 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3527 | if (indx) | |
3528 | continue; | |
3529 | else if (r_type == R_386_TLS_LE_32) | |
3530 | relocation = dtpoff_base (info) - relocation; | |
3531 | else | |
3532 | relocation -= dtpoff_base (info); | |
3533 | } | |
3534 | else if (r_type == R_386_TLS_LE_32) | |
3535 | relocation = tpoff (info, relocation); | |
3536 | else | |
3537 | relocation = -tpoff (info, relocation); | |
13ae64f3 JJ |
3538 | break; |
3539 | ||
252b5132 RH |
3540 | default: |
3541 | break; | |
3542 | } | |
3543 | ||
239e1f3a AM |
3544 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3545 | because such sections are not SEC_ALLOC and thus ld.so will | |
3546 | not process them. */ | |
8c694914 | 3547 | if (unresolved_reloc |
239e1f3a | 3548 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 3549 | && h->def_dynamic)) |
6a30718d JJ |
3550 | { |
3551 | (*_bfd_error_handler) | |
843fe662 | 3552 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
3553 | input_bfd, |
3554 | input_section, | |
6a30718d | 3555 | (long) rel->r_offset, |
843fe662 | 3556 | howto->name, |
6a30718d | 3557 | h->root.root.string); |
b34976b6 | 3558 | return FALSE; |
6a30718d | 3559 | } |
83be169b | 3560 | |
252b5132 RH |
3561 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3562 | contents, rel->r_offset, | |
55fd94b0 | 3563 | relocation, 0); |
252b5132 | 3564 | |
cf5c0c5b | 3565 | if (r != bfd_reloc_ok) |
252b5132 | 3566 | { |
cf5c0c5b | 3567 | const char *name; |
ffb2e45b | 3568 | |
cf5c0c5b AM |
3569 | if (h != NULL) |
3570 | name = h->root.root.string; | |
3571 | else | |
3572 | { | |
3573 | name = bfd_elf_string_from_elf_section (input_bfd, | |
3574 | symtab_hdr->sh_link, | |
3575 | sym->st_name); | |
3576 | if (name == NULL) | |
b34976b6 | 3577 | return FALSE; |
cf5c0c5b AM |
3578 | if (*name == '\0') |
3579 | name = bfd_section_name (input_bfd, sec); | |
3580 | } | |
ffb2e45b | 3581 | |
cf5c0c5b AM |
3582 | if (r == bfd_reloc_overflow) |
3583 | { | |
cf5c0c5b | 3584 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
3585 | (info, (h ? &h->root : NULL), name, howto->name, |
3586 | (bfd_vma) 0, input_bfd, input_section, | |
3587 | rel->r_offset))) | |
b34976b6 | 3588 | return FALSE; |
cf5c0c5b AM |
3589 | } |
3590 | else | |
3591 | { | |
3592 | (*_bfd_error_handler) | |
d003868e AM |
3593 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
3594 | input_bfd, input_section, | |
cf5c0c5b | 3595 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 3596 | return FALSE; |
cf5c0c5b | 3597 | } |
252b5132 RH |
3598 | } |
3599 | } | |
3600 | ||
b34976b6 | 3601 | return TRUE; |
252b5132 RH |
3602 | } |
3603 | ||
3604 | /* Finish up dynamic symbol handling. We set the contents of various | |
3605 | dynamic sections here. */ | |
3606 | ||
b34976b6 | 3607 | static bfd_boolean |
55fd94b0 AM |
3608 | elf_i386_finish_dynamic_symbol (bfd *output_bfd, |
3609 | struct bfd_link_info *info, | |
3610 | struct elf_link_hash_entry *h, | |
3611 | Elf_Internal_Sym *sym) | |
252b5132 | 3612 | { |
6725bdbf | 3613 | struct elf_i386_link_hash_table *htab; |
252b5132 | 3614 | |
6725bdbf | 3615 | htab = elf_i386_hash_table (info); |
252b5132 RH |
3616 | |
3617 | if (h->plt.offset != (bfd_vma) -1) | |
3618 | { | |
252b5132 RH |
3619 | bfd_vma plt_index; |
3620 | bfd_vma got_offset; | |
947216bf AM |
3621 | Elf_Internal_Rela rel; |
3622 | bfd_byte *loc; | |
252b5132 RH |
3623 | |
3624 | /* This symbol has an entry in the procedure linkage table. Set | |
3625 | it up. */ | |
3626 | ||
ffb2e45b AM |
3627 | if (h->dynindx == -1 |
3628 | || htab->splt == NULL | |
3629 | || htab->sgotplt == NULL | |
3630 | || htab->srelplt == NULL) | |
3631 | abort (); | |
252b5132 RH |
3632 | |
3633 | /* Get the index in the procedure linkage table which | |
3634 | corresponds to this symbol. This is the index of this symbol | |
3635 | in all the symbols for which we are making plt entries. The | |
3636 | first entry in the procedure linkage table is reserved. */ | |
3637 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3638 | ||
3639 | /* Get the offset into the .got table of the entry that | |
3640 | corresponds to this function. Each .got entry is 4 bytes. | |
3641 | The first three are reserved. */ | |
3642 | got_offset = (plt_index + 3) * 4; | |
3643 | ||
3644 | /* Fill in the entry in the procedure linkage table. */ | |
3645 | if (! info->shared) | |
3646 | { | |
6725bdbf | 3647 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry, |
252b5132 RH |
3648 | PLT_ENTRY_SIZE); |
3649 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
3650 | (htab->sgotplt->output_section->vma |
3651 | + htab->sgotplt->output_offset | |
252b5132 | 3652 | + got_offset), |
6725bdbf | 3653 | htab->splt->contents + h->plt.offset + 2); |
eac338cf PB |
3654 | |
3655 | if (htab->is_vxworks) | |
3656 | { | |
3657 | int s, k, reloc_index; | |
3658 | ||
3659 | /* Create the R_386_32 relocation referencing the GOT | |
3660 | for this PLT entry. */ | |
3661 | ||
3662 | /* S: Current slot number (zero-based). */ | |
3663 | s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
3664 | /* K: Number of relocations for PLTResolve. */ | |
3665 | if (info->shared) | |
3666 | k = PLTRESOLVE_RELOCS_SHLIB; | |
3667 | else | |
3668 | k = PLTRESOLVE_RELOCS; | |
3669 | /* Skip the PLTresolve relocations, and the relocations for | |
3670 | the other PLT slots. */ | |
3671 | reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS; | |
3672 | loc = (htab->srelplt2->contents + reloc_index | |
3673 | * sizeof (Elf32_External_Rel)); | |
3674 | ||
3675 | rel.r_offset = (htab->splt->output_section->vma | |
3676 | + htab->splt->output_offset | |
3677 | + h->plt.offset + 2), | |
7325306f | 3678 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
3679 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
3680 | ||
3681 | /* Create the R_386_32 relocation referencing the beginning of | |
3682 | the PLT for this GOT entry. */ | |
3683 | rel.r_offset = (htab->sgotplt->output_section->vma | |
3684 | + htab->sgotplt->output_offset | |
3685 | + got_offset); | |
7325306f | 3686 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf PB |
3687 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
3688 | loc + sizeof (Elf32_External_Rel)); | |
3689 | } | |
252b5132 RH |
3690 | } |
3691 | else | |
3692 | { | |
6725bdbf | 3693 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry, |
252b5132 RH |
3694 | PLT_ENTRY_SIZE); |
3695 | bfd_put_32 (output_bfd, got_offset, | |
6725bdbf | 3696 | htab->splt->contents + h->plt.offset + 2); |
252b5132 RH |
3697 | } |
3698 | ||
3699 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel), | |
6725bdbf | 3700 | htab->splt->contents + h->plt.offset + 7); |
252b5132 | 3701 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), |
6725bdbf | 3702 | htab->splt->contents + h->plt.offset + 12); |
252b5132 RH |
3703 | |
3704 | /* Fill in the entry in the global offset table. */ | |
3705 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
3706 | (htab->splt->output_section->vma |
3707 | + htab->splt->output_offset | |
252b5132 RH |
3708 | + h->plt.offset |
3709 | + 6), | |
6725bdbf | 3710 | htab->sgotplt->contents + got_offset); |
252b5132 RH |
3711 | |
3712 | /* Fill in the entry in the .rel.plt section. */ | |
6725bdbf AM |
3713 | rel.r_offset = (htab->sgotplt->output_section->vma |
3714 | + htab->sgotplt->output_offset | |
252b5132 RH |
3715 | + got_offset); |
3716 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); | |
947216bf | 3717 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel); |
0ac8d2ca | 3718 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 | 3719 | |
f5385ebf | 3720 | if (!h->def_regular) |
252b5132 RH |
3721 | { |
3722 | /* Mark the symbol as undefined, rather than as defined in | |
c6585bbb JJ |
3723 | the .plt section. Leave the value if there were any |
3724 | relocations where pointer equality matters (this is a clue | |
51b64d56 AM |
3725 | for the dynamic linker, to make function pointer |
3726 | comparisons work between an application and shared | |
c6585bbb JJ |
3727 | library), otherwise set it to zero. If a function is only |
3728 | called from a binary, there is no need to slow down | |
3729 | shared libraries because of that. */ | |
252b5132 | 3730 | sym->st_shndx = SHN_UNDEF; |
f5385ebf | 3731 | if (!h->pointer_equality_needed) |
c6585bbb | 3732 | sym->st_value = 0; |
252b5132 RH |
3733 | } |
3734 | } | |
3735 | ||
13ae64f3 | 3736 | if (h->got.offset != (bfd_vma) -1 |
67a4f2b7 | 3737 | && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type) |
37e55690 | 3738 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0) |
252b5132 | 3739 | { |
947216bf AM |
3740 | Elf_Internal_Rela rel; |
3741 | bfd_byte *loc; | |
252b5132 RH |
3742 | |
3743 | /* This symbol has an entry in the global offset table. Set it | |
3744 | up. */ | |
3745 | ||
ffb2e45b AM |
3746 | if (htab->sgot == NULL || htab->srelgot == NULL) |
3747 | abort (); | |
252b5132 | 3748 | |
6725bdbf AM |
3749 | rel.r_offset = (htab->sgot->output_section->vma |
3750 | + htab->sgot->output_offset | |
dc810e39 | 3751 | + (h->got.offset & ~(bfd_vma) 1)); |
252b5132 | 3752 | |
dd5724d5 AM |
3753 | /* If this is a static link, or it is a -Bsymbolic link and the |
3754 | symbol is defined locally or was forced to be local because | |
3755 | of a version file, we just want to emit a RELATIVE reloc. | |
252b5132 RH |
3756 | The entry in the global offset table will already have been |
3757 | initialized in the relocate_section function. */ | |
6725bdbf | 3758 | if (info->shared |
586119b3 | 3759 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
dd5724d5 | 3760 | { |
6725bdbf | 3761 | BFD_ASSERT((h->got.offset & 1) != 0); |
dd5724d5 AM |
3762 | rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
3763 | } | |
252b5132 RH |
3764 | else |
3765 | { | |
dd5724d5 | 3766 | BFD_ASSERT((h->got.offset & 1) == 0); |
6725bdbf AM |
3767 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
3768 | htab->sgot->contents + h->got.offset); | |
252b5132 RH |
3769 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); |
3770 | } | |
3771 | ||
947216bf AM |
3772 | loc = htab->srelgot->contents; |
3773 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3774 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3775 | } |
3776 | ||
f5385ebf | 3777 | if (h->needs_copy) |
252b5132 | 3778 | { |
947216bf AM |
3779 | Elf_Internal_Rela rel; |
3780 | bfd_byte *loc; | |
252b5132 RH |
3781 | |
3782 | /* This symbol needs a copy reloc. Set it up. */ | |
3783 | ||
ffb2e45b AM |
3784 | if (h->dynindx == -1 |
3785 | || (h->root.type != bfd_link_hash_defined | |
3786 | && h->root.type != bfd_link_hash_defweak) | |
3787 | || htab->srelbss == NULL) | |
3788 | abort (); | |
252b5132 RH |
3789 | |
3790 | rel.r_offset = (h->root.u.def.value | |
3791 | + h->root.u.def.section->output_section->vma | |
3792 | + h->root.u.def.section->output_offset); | |
3793 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); | |
947216bf AM |
3794 | loc = htab->srelbss->contents; |
3795 | loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3796 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3797 | } |
3798 | ||
eac338cf PB |
3799 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. |
3800 | On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it | |
3801 | is relative to the ".got" section. */ | |
252b5132 | 3802 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
22edb2f1 | 3803 | || (!htab->is_vxworks && h == htab->elf.hgot)) |
252b5132 RH |
3804 | sym->st_shndx = SHN_ABS; |
3805 | ||
b34976b6 | 3806 | return TRUE; |
252b5132 RH |
3807 | } |
3808 | ||
38701953 AM |
3809 | /* Used to decide how to sort relocs in an optimal manner for the |
3810 | dynamic linker, before writing them out. */ | |
3811 | ||
3812 | static enum elf_reloc_type_class | |
55fd94b0 | 3813 | elf_i386_reloc_type_class (const Elf_Internal_Rela *rela) |
38701953 | 3814 | { |
55fd94b0 | 3815 | switch (ELF32_R_TYPE (rela->r_info)) |
38701953 AM |
3816 | { |
3817 | case R_386_RELATIVE: | |
3818 | return reloc_class_relative; | |
3819 | case R_386_JUMP_SLOT: | |
3820 | return reloc_class_plt; | |
3821 | case R_386_COPY: | |
3822 | return reloc_class_copy; | |
3823 | default: | |
3824 | return reloc_class_normal; | |
3825 | } | |
3826 | } | |
3827 | ||
252b5132 RH |
3828 | /* Finish up the dynamic sections. */ |
3829 | ||
b34976b6 | 3830 | static bfd_boolean |
55fd94b0 AM |
3831 | elf_i386_finish_dynamic_sections (bfd *output_bfd, |
3832 | struct bfd_link_info *info) | |
252b5132 | 3833 | { |
6725bdbf | 3834 | struct elf_i386_link_hash_table *htab; |
252b5132 | 3835 | bfd *dynobj; |
252b5132 RH |
3836 | asection *sdyn; |
3837 | ||
6725bdbf | 3838 | htab = elf_i386_hash_table (info); |
ebe50bae | 3839 | dynobj = htab->elf.dynobj; |
252b5132 RH |
3840 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
3841 | ||
ebe50bae | 3842 | if (htab->elf.dynamic_sections_created) |
252b5132 | 3843 | { |
252b5132 RH |
3844 | Elf32_External_Dyn *dyncon, *dynconend; |
3845 | ||
ffb2e45b AM |
3846 | if (sdyn == NULL || htab->sgot == NULL) |
3847 | abort (); | |
252b5132 RH |
3848 | |
3849 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 3850 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
3851 | for (; dyncon < dynconend; dyncon++) |
3852 | { | |
3853 | Elf_Internal_Dyn dyn; | |
51b64d56 | 3854 | asection *s; |
252b5132 RH |
3855 | |
3856 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
3857 | ||
3858 | switch (dyn.d_tag) | |
3859 | { | |
3860 | default: | |
7a2b07ff NS |
3861 | if (htab->is_vxworks |
3862 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
3863 | break; | |
0ac8d2ca | 3864 | continue; |
252b5132 RH |
3865 | |
3866 | case DT_PLTGOT: | |
8c37241b JJ |
3867 | s = htab->sgotplt; |
3868 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
6725bdbf AM |
3869 | break; |
3870 | ||
252b5132 | 3871 | case DT_JMPREL: |
6348e046 AM |
3872 | s = htab->srelplt; |
3873 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
252b5132 RH |
3874 | break; |
3875 | ||
3876 | case DT_PLTRELSZ: | |
6348e046 | 3877 | s = htab->srelplt; |
eea6121a | 3878 | dyn.d_un.d_val = s->size; |
252b5132 RH |
3879 | break; |
3880 | ||
3881 | case DT_RELSZ: | |
3882 | /* My reading of the SVR4 ABI indicates that the | |
3883 | procedure linkage table relocs (DT_JMPREL) should be | |
3884 | included in the overall relocs (DT_REL). This is | |
3885 | what Solaris does. However, UnixWare can not handle | |
3886 | that case. Therefore, we override the DT_RELSZ entry | |
6348e046 AM |
3887 | here to make it not include the JMPREL relocs. */ |
3888 | s = htab->srelplt; | |
3889 | if (s == NULL) | |
3890 | continue; | |
eea6121a | 3891 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
3892 | break; |
3893 | ||
3894 | case DT_REL: | |
3895 | /* We may not be using the standard ELF linker script. | |
3896 | If .rel.plt is the first .rel section, we adjust | |
3897 | DT_REL to not include it. */ | |
3898 | s = htab->srelplt; | |
3899 | if (s == NULL) | |
3900 | continue; | |
3901 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
3902 | continue; | |
eea6121a | 3903 | dyn.d_un.d_ptr += s->size; |
252b5132 RH |
3904 | break; |
3905 | } | |
0ac8d2ca AM |
3906 | |
3907 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
3908 | } |
3909 | ||
3910 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 3911 | if (htab->splt && htab->splt->size > 0) |
252b5132 RH |
3912 | { |
3913 | if (info->shared) | |
eac338cf PB |
3914 | { |
3915 | memcpy (htab->splt->contents, elf_i386_pic_plt0_entry, | |
3916 | sizeof (elf_i386_pic_plt0_entry)); | |
3917 | memset (htab->splt->contents + sizeof (elf_i386_pic_plt0_entry), | |
3918 | htab->plt0_pad_byte, | |
3919 | PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry)); | |
3920 | } | |
252b5132 RH |
3921 | else |
3922 | { | |
eac338cf PB |
3923 | memcpy (htab->splt->contents, elf_i386_plt0_entry, |
3924 | sizeof(elf_i386_plt0_entry)); | |
3925 | memset (htab->splt->contents + sizeof (elf_i386_plt0_entry), | |
3926 | htab->plt0_pad_byte, | |
3927 | PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry)); | |
252b5132 | 3928 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3929 | (htab->sgotplt->output_section->vma |
3930 | + htab->sgotplt->output_offset | |
3931 | + 4), | |
3932 | htab->splt->contents + 2); | |
252b5132 | 3933 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3934 | (htab->sgotplt->output_section->vma |
3935 | + htab->sgotplt->output_offset | |
3936 | + 8), | |
3937 | htab->splt->contents + 8); | |
eac338cf PB |
3938 | |
3939 | if (htab->is_vxworks) | |
3940 | { | |
3941 | Elf_Internal_Rela rel; | |
7325306f | 3942 | |
eac338cf PB |
3943 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4. |
3944 | On IA32 we use REL relocations so the addend goes in | |
3945 | the PLT directly. */ | |
3946 | rel.r_offset = (htab->splt->output_section->vma | |
3947 | + htab->splt->output_offset | |
3948 | + 2); | |
7325306f | 3949 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
3950 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
3951 | htab->srelplt2->contents); | |
3952 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
3953 | rel.r_offset = (htab->splt->output_section->vma | |
3954 | + htab->splt->output_offset | |
3955 | + 8); | |
7325306f | 3956 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
3957 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
3958 | htab->srelplt2->contents + | |
3959 | sizeof (Elf32_External_Rel)); | |
3960 | } | |
252b5132 RH |
3961 | } |
3962 | ||
3963 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
3964 | really seem like the right value. */ | |
6725bdbf AM |
3965 | elf_section_data (htab->splt->output_section) |
3966 | ->this_hdr.sh_entsize = 4; | |
eac338cf PB |
3967 | |
3968 | /* Correct the .rel.plt.unloaded relocations. */ | |
3969 | if (htab->is_vxworks && !info->shared) | |
3970 | { | |
3971 | int num_plts = (htab->splt->size / PLT_ENTRY_SIZE) - 1; | |
4c9b0de6 | 3972 | unsigned char *p; |
eac338cf PB |
3973 | |
3974 | p = htab->srelplt2->contents; | |
3975 | if (info->shared) | |
3976 | p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel); | |
3977 | else | |
3978 | p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel); | |
3979 | ||
3980 | for (; num_plts; num_plts--) | |
3981 | { | |
3982 | Elf_Internal_Rela rel; | |
3983 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 3984 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
3985 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
3986 | p += sizeof (Elf32_External_Rel); | |
3987 | ||
3988 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 3989 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf PB |
3990 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
3991 | p += sizeof (Elf32_External_Rel); | |
3992 | } | |
3993 | } | |
252b5132 RH |
3994 | } |
3995 | } | |
3996 | ||
12d0ee4a | 3997 | if (htab->sgotplt) |
252b5132 | 3998 | { |
12d0ee4a | 3999 | /* Fill in the first three entries in the global offset table. */ |
eea6121a | 4000 | if (htab->sgotplt->size > 0) |
12d0ee4a AM |
4001 | { |
4002 | bfd_put_32 (output_bfd, | |
55fd94b0 | 4003 | (sdyn == NULL ? 0 |
12d0ee4a AM |
4004 | : sdyn->output_section->vma + sdyn->output_offset), |
4005 | htab->sgotplt->contents); | |
55fd94b0 AM |
4006 | bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 4); |
4007 | bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 8); | |
12d0ee4a | 4008 | } |
252b5132 | 4009 | |
12d0ee4a AM |
4010 | elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4; |
4011 | } | |
8c37241b | 4012 | |
eea6121a | 4013 | if (htab->sgot && htab->sgot->size > 0) |
8c37241b JJ |
4014 | elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4; |
4015 | ||
b34976b6 | 4016 | return TRUE; |
252b5132 RH |
4017 | } |
4018 | ||
4c45e5c9 JJ |
4019 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4020 | or (bfd_vma) -1 if it should not be included. */ | |
4021 | ||
4022 | static bfd_vma | |
4023 | elf_i386_plt_sym_val (bfd_vma i, const asection *plt, | |
4024 | const arelent *rel ATTRIBUTE_UNUSED) | |
4025 | { | |
4026 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
4027 | } | |
4028 | ||
fdc90cb4 JJ |
4029 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
4030 | ||
4031 | static bfd_boolean | |
4032 | elf_i386_hash_symbol (struct elf_link_hash_entry *h) | |
4033 | { | |
4034 | if (h->plt.offset != (bfd_vma) -1 | |
4035 | && !h->def_regular | |
4036 | && !h->pointer_equality_needed) | |
4037 | return FALSE; | |
4038 | ||
4039 | return _bfd_elf_hash_symbol (h); | |
4040 | } | |
4c45e5c9 | 4041 | |
252b5132 RH |
4042 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vec |
4043 | #define TARGET_LITTLE_NAME "elf32-i386" | |
4044 | #define ELF_ARCH bfd_arch_i386 | |
4045 | #define ELF_MACHINE_CODE EM_386 | |
4046 | #define ELF_MAXPAGESIZE 0x1000 | |
252b5132 RH |
4047 | |
4048 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4049 | #define elf_backend_can_refcount 1 |
252b5132 RH |
4050 | #define elf_backend_want_got_plt 1 |
4051 | #define elf_backend_plt_readonly 1 | |
4052 | #define elf_backend_want_plt_sym 0 | |
4053 | #define elf_backend_got_header_size 12 | |
252b5132 | 4054 | |
8c29f035 AM |
4055 | /* Support RELA for objdump of prelink objects. */ |
4056 | #define elf_info_to_howto elf_i386_info_to_howto_rel | |
dd5724d5 AM |
4057 | #define elf_info_to_howto_rel elf_i386_info_to_howto_rel |
4058 | ||
13ae64f3 | 4059 | #define bfd_elf32_mkobject elf_i386_mkobject |
13ae64f3 | 4060 | |
dd5724d5 AM |
4061 | #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name |
4062 | #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create | |
4063 | #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup | |
13285a1b | 4064 | #define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup |
dd5724d5 AM |
4065 | |
4066 | #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol | |
13285a1b | 4067 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
dd5724d5 | 4068 | #define elf_backend_check_relocs elf_i386_check_relocs |
0ac8d2ca | 4069 | #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol |
6725bdbf | 4070 | #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections |
0ac8d2ca | 4071 | #define elf_backend_fake_sections elf_i386_fake_sections |
dd5724d5 AM |
4072 | #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections |
4073 | #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol | |
4074 | #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook | |
4075 | #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook | |
c5fccbec DJ |
4076 | #define elf_backend_grok_prstatus elf_i386_grok_prstatus |
4077 | #define elf_backend_grok_psinfo elf_i386_grok_psinfo | |
db6751f2 | 4078 | #define elf_backend_reloc_type_class elf_i386_reloc_type_class |
0ac8d2ca AM |
4079 | #define elf_backend_relocate_section elf_i386_relocate_section |
4080 | #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections | |
67a4f2b7 | 4081 | #define elf_backend_always_size_sections elf_i386_always_size_sections |
74541ad4 AM |
4082 | #define elf_backend_omit_section_dynsym \ |
4083 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
4c45e5c9 | 4084 | #define elf_backend_plt_sym_val elf_i386_plt_sym_val |
fdc90cb4 | 4085 | #define elf_backend_hash_symbol elf_i386_hash_symbol |
dd5724d5 | 4086 | |
252b5132 | 4087 | #include "elf32-target.h" |
2bc3c89a AM |
4088 | |
4089 | /* FreeBSD support. */ | |
4090 | ||
4091 | #undef TARGET_LITTLE_SYM | |
4092 | #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec | |
4093 | #undef TARGET_LITTLE_NAME | |
4094 | #define TARGET_LITTLE_NAME "elf32-i386-freebsd" | |
d1036acb L |
4095 | #undef ELF_OSABI |
4096 | #define ELF_OSABI ELFOSABI_FREEBSD | |
2bc3c89a AM |
4097 | |
4098 | /* The kernel recognizes executables as valid only if they carry a | |
4099 | "FreeBSD" label in the ELF header. So we put this label on all | |
4100 | executables and (for simplicity) also all other object files. */ | |
4101 | ||
2bc3c89a | 4102 | static void |
55fd94b0 AM |
4103 | elf_i386_post_process_headers (bfd *abfd, |
4104 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
2bc3c89a AM |
4105 | { |
4106 | Elf_Internal_Ehdr *i_ehdrp; | |
4107 | ||
4108 | i_ehdrp = elf_elfheader (abfd); | |
4109 | ||
4110 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
d1036acb | 4111 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; |
2bc3c89a AM |
4112 | #ifdef OLD_FREEBSD_ABI_LABEL |
4113 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
4114 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
caf47ea6 | 4115 | #endif |
2bc3c89a AM |
4116 | } |
4117 | ||
4118 | #undef elf_backend_post_process_headers | |
571fe01f NC |
4119 | #define elf_backend_post_process_headers elf_i386_post_process_headers |
4120 | #undef elf32_bed | |
4121 | #define elf32_bed elf32_i386_fbsd_bed | |
2bc3c89a AM |
4122 | |
4123 | #include "elf32-target.h" | |
eac338cf PB |
4124 | |
4125 | /* VxWorks support. */ | |
4126 | ||
4127 | #undef TARGET_LITTLE_SYM | |
4128 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec | |
4129 | #undef TARGET_LITTLE_NAME | |
4130 | #define TARGET_LITTLE_NAME "elf32-i386-vxworks" | |
d1036acb | 4131 | #undef ELF_OSABI |
eac338cf PB |
4132 | |
4133 | /* Like elf_i386_link_hash_table_create but with tweaks for VxWorks. */ | |
4134 | ||
4135 | static struct bfd_link_hash_table * | |
4136 | elf_i386_vxworks_link_hash_table_create (bfd *abfd) | |
4137 | { | |
4138 | struct bfd_link_hash_table *ret; | |
4139 | struct elf_i386_link_hash_table *htab; | |
4140 | ||
4141 | ret = elf_i386_link_hash_table_create (abfd); | |
4142 | if (ret) | |
4143 | { | |
4144 | htab = (struct elf_i386_link_hash_table *) ret; | |
4145 | htab->is_vxworks = 1; | |
4146 | htab->plt0_pad_byte = 0x90; | |
4147 | } | |
4148 | ||
4149 | return ret; | |
4150 | } | |
4151 | ||
4152 | ||
13285a1b AM |
4153 | #undef elf_backend_relocs_compatible |
4154 | #undef elf_backend_post_process_headers | |
eac338cf PB |
4155 | #undef bfd_elf32_bfd_link_hash_table_create |
4156 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4157 | elf_i386_vxworks_link_hash_table_create | |
4158 | #undef elf_backend_add_symbol_hook | |
4159 | #define elf_backend_add_symbol_hook \ | |
4160 | elf_vxworks_add_symbol_hook | |
4161 | #undef elf_backend_link_output_symbol_hook | |
4162 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 4163 | elf_vxworks_link_output_symbol_hook |
eac338cf PB |
4164 | #undef elf_backend_emit_relocs |
4165 | #define elf_backend_emit_relocs elf_vxworks_emit_relocs | |
4166 | #undef elf_backend_final_write_processing | |
4167 | #define elf_backend_final_write_processing \ | |
4168 | elf_vxworks_final_write_processing | |
4169 | ||
4170 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
4171 | define it. */ | |
4172 | #undef elf_backend_want_plt_sym | |
4173 | #define elf_backend_want_plt_sym 1 | |
4174 | ||
4175 | #undef elf32_bed | |
4176 | #define elf32_bed elf32_i386_vxworks_bed | |
4177 | ||
4178 | #include "elf32-target.h" |