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; | |
9f03412a AO |
695 | |
696 | /* _TLS_MODULE_BASE_ symbol. */ | |
697 | struct bfd_link_hash_entry *tls_module_base; | |
6725bdbf | 698 | }; |
252b5132 RH |
699 | |
700 | /* Get the i386 ELF linker hash table from a link_info structure. */ | |
701 | ||
702 | #define elf_i386_hash_table(p) \ | |
703 | ((struct elf_i386_link_hash_table *) ((p)->hash)) | |
704 | ||
67a4f2b7 | 705 | #define elf_i386_compute_jump_table_size(htab) \ |
5ae0bfb6 | 706 | ((htab)->next_tls_desc_index * 4) |
67a4f2b7 | 707 | |
252b5132 RH |
708 | /* Create an entry in an i386 ELF linker hash table. */ |
709 | ||
710 | static struct bfd_hash_entry * | |
55fd94b0 AM |
711 | link_hash_newfunc (struct bfd_hash_entry *entry, |
712 | struct bfd_hash_table *table, | |
713 | const char *string) | |
252b5132 | 714 | { |
252b5132 RH |
715 | /* Allocate the structure if it has not already been allocated by a |
716 | subclass. */ | |
ebe50bae AM |
717 | if (entry == NULL) |
718 | { | |
719 | entry = bfd_hash_allocate (table, | |
720 | sizeof (struct elf_i386_link_hash_entry)); | |
721 | if (entry == NULL) | |
722 | return entry; | |
723 | } | |
252b5132 RH |
724 | |
725 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
726 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
727 | if (entry != NULL) | |
252b5132 | 728 | { |
ebe50bae AM |
729 | struct elf_i386_link_hash_entry *eh; |
730 | ||
731 | eh = (struct elf_i386_link_hash_entry *) entry; | |
732 | eh->dyn_relocs = NULL; | |
13ae64f3 | 733 | eh->tls_type = GOT_UNKNOWN; |
67a4f2b7 | 734 | eh->tlsdesc_got = (bfd_vma) -1; |
252b5132 RH |
735 | } |
736 | ||
ebe50bae | 737 | return entry; |
252b5132 RH |
738 | } |
739 | ||
740 | /* Create an i386 ELF linker hash table. */ | |
741 | ||
742 | static struct bfd_link_hash_table * | |
55fd94b0 | 743 | elf_i386_link_hash_table_create (bfd *abfd) |
252b5132 RH |
744 | { |
745 | struct elf_i386_link_hash_table *ret; | |
dc810e39 | 746 | bfd_size_type amt = sizeof (struct elf_i386_link_hash_table); |
252b5132 | 747 | |
55fd94b0 | 748 | ret = bfd_malloc (amt); |
ebe50bae | 749 | if (ret == NULL) |
252b5132 RH |
750 | return NULL; |
751 | ||
66eb6687 AM |
752 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc, |
753 | sizeof (struct elf_i386_link_hash_entry))) | |
252b5132 | 754 | { |
e2d34d7d | 755 | free (ret); |
252b5132 RH |
756 | return NULL; |
757 | } | |
758 | ||
6725bdbf AM |
759 | ret->sgot = NULL; |
760 | ret->sgotplt = NULL; | |
761 | ret->srelgot = NULL; | |
762 | ret->splt = NULL; | |
763 | ret->srelplt = NULL; | |
764 | ret->sdynbss = NULL; | |
765 | ret->srelbss = NULL; | |
7a624474 | 766 | ret->tls_ldm_got.refcount = 0; |
5ae0bfb6 | 767 | ret->next_tls_desc_index = 0; |
67a4f2b7 | 768 | ret->sgotplt_jump_table_size = 0; |
ec338859 | 769 | ret->sym_sec.abfd = NULL; |
eac338cf PB |
770 | ret->is_vxworks = 0; |
771 | ret->srelplt2 = NULL; | |
eac338cf | 772 | ret->plt0_pad_byte = 0; |
9f03412a | 773 | ret->tls_module_base = NULL; |
6725bdbf | 774 | |
ebe50bae | 775 | return &ret->elf.root; |
252b5132 RH |
776 | } |
777 | ||
6725bdbf AM |
778 | /* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up |
779 | shortcuts to them in our hash table. */ | |
780 | ||
b34976b6 | 781 | static bfd_boolean |
55fd94b0 | 782 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
6725bdbf AM |
783 | { |
784 | struct elf_i386_link_hash_table *htab; | |
785 | ||
786 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
b34976b6 | 787 | return FALSE; |
6725bdbf AM |
788 | |
789 | htab = elf_i386_hash_table (info); | |
790 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
791 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
792 | if (!htab->sgot || !htab->sgotplt) | |
793 | abort (); | |
794 | ||
3496cb2a L |
795 | htab->srelgot = bfd_make_section_with_flags (dynobj, ".rel.got", |
796 | (SEC_ALLOC | SEC_LOAD | |
797 | | SEC_HAS_CONTENTS | |
798 | | SEC_IN_MEMORY | |
799 | | SEC_LINKER_CREATED | |
800 | | SEC_READONLY)); | |
6725bdbf | 801 | if (htab->srelgot == NULL |
6725bdbf | 802 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) |
b34976b6 AM |
803 | return FALSE; |
804 | return TRUE; | |
6725bdbf AM |
805 | } |
806 | ||
807 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and | |
808 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
809 | hash table. */ | |
810 | ||
b34976b6 | 811 | static bfd_boolean |
55fd94b0 | 812 | elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
6725bdbf AM |
813 | { |
814 | struct elf_i386_link_hash_table *htab; | |
815 | ||
816 | htab = elf_i386_hash_table (info); | |
817 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
b34976b6 | 818 | return FALSE; |
6725bdbf AM |
819 | |
820 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
b34976b6 | 821 | return FALSE; |
6725bdbf AM |
822 | |
823 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
824 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt"); | |
825 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
826 | if (!info->shared) | |
827 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
828 | ||
829 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
830 | || (!info->shared && !htab->srelbss)) | |
831 | abort (); | |
832 | ||
711de32c RS |
833 | if (htab->is_vxworks |
834 | && !elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) | |
835 | return FALSE; | |
eac338cf | 836 | |
b34976b6 | 837 | return TRUE; |
6725bdbf AM |
838 | } |
839 | ||
ebe50bae AM |
840 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
841 | ||
51b64d56 | 842 | static void |
fcfa13d2 | 843 | elf_i386_copy_indirect_symbol (struct bfd_link_info *info, |
55fd94b0 AM |
844 | struct elf_link_hash_entry *dir, |
845 | struct elf_link_hash_entry *ind) | |
ebe50bae AM |
846 | { |
847 | struct elf_i386_link_hash_entry *edir, *eind; | |
848 | ||
849 | edir = (struct elf_i386_link_hash_entry *) dir; | |
850 | eind = (struct elf_i386_link_hash_entry *) ind; | |
851 | ||
bbd7ec4a | 852 | if (eind->dyn_relocs != NULL) |
ebe50bae | 853 | { |
bbd7ec4a AM |
854 | if (edir->dyn_relocs != NULL) |
855 | { | |
856 | struct elf_i386_dyn_relocs **pp; | |
857 | struct elf_i386_dyn_relocs *p; | |
858 | ||
fcfa13d2 | 859 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
860 | list. Merge any entries against the same section. */ |
861 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
862 | { | |
863 | struct elf_i386_dyn_relocs *q; | |
864 | ||
865 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
866 | if (q->sec == p->sec) | |
867 | { | |
868 | q->pc_count += p->pc_count; | |
869 | q->count += p->count; | |
870 | *pp = p->next; | |
871 | break; | |
872 | } | |
873 | if (q == NULL) | |
874 | pp = &p->next; | |
875 | } | |
876 | *pp = edir->dyn_relocs; | |
877 | } | |
878 | ||
ebe50bae AM |
879 | edir->dyn_relocs = eind->dyn_relocs; |
880 | eind->dyn_relocs = NULL; | |
881 | } | |
ebe50bae | 882 | |
cd67d266 JJ |
883 | if (ind->root.type == bfd_link_hash_indirect |
884 | && dir->got.refcount <= 0) | |
885 | { | |
886 | edir->tls_type = eind->tls_type; | |
887 | eind->tls_type = GOT_UNKNOWN; | |
888 | } | |
81848ca0 AM |
889 | |
890 | if (ELIMINATE_COPY_RELOCS | |
891 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
892 | && dir->dynamic_adjusted) |
893 | { | |
894 | /* If called to transfer flags for a weakdef during processing | |
895 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
896 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
897 | dir->ref_dynamic |= ind->ref_dynamic; | |
898 | dir->ref_regular |= ind->ref_regular; | |
899 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
900 | dir->needs_plt |= ind->needs_plt; | |
901 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
902 | } | |
81848ca0 | 903 | else |
fcfa13d2 | 904 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
ebe50bae AM |
905 | } |
906 | ||
142411ca L |
907 | typedef union |
908 | { | |
909 | unsigned char c[2]; | |
910 | uint16_t i; | |
911 | } | |
912 | i386_opcode16; | |
913 | ||
914 | /* Return TRUE if the TLS access code sequence support transition | |
915 | from R_TYPE. */ | |
916 | ||
917 | static bfd_boolean | |
918 | elf_i386_check_tls_transition (bfd *abfd, asection *sec, | |
919 | bfd_byte *contents, | |
920 | Elf_Internal_Shdr *symtab_hdr, | |
921 | struct elf_link_hash_entry **sym_hashes, | |
922 | unsigned int r_type, | |
923 | const Elf_Internal_Rela *rel, | |
924 | const Elf_Internal_Rela *relend) | |
13ae64f3 | 925 | { |
142411ca L |
926 | unsigned int val, type; |
927 | unsigned long r_symndx; | |
928 | struct elf_link_hash_entry *h; | |
929 | bfd_vma offset; | |
930 | ||
931 | /* Get the section contents. */ | |
932 | if (contents == NULL) | |
933 | { | |
934 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
935 | contents = elf_section_data (sec)->this_hdr.contents; | |
936 | else | |
937 | { | |
938 | /* FIXME: How to better handle error condition? */ | |
939 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
940 | return FALSE; | |
13ae64f3 | 941 | |
142411ca L |
942 | /* Cache the section contents for elf_link_input_bfd. */ |
943 | elf_section_data (sec)->this_hdr.contents = contents; | |
944 | } | |
945 | } | |
946 | ||
947 | offset = rel->r_offset; | |
13ae64f3 | 948 | switch (r_type) |
142411ca L |
949 | { |
950 | case R_386_TLS_GD: | |
951 | case R_386_TLS_LDM: | |
952 | if (offset < 2 || (rel + 1) >= relend) | |
953 | return FALSE; | |
954 | ||
955 | type = bfd_get_8 (abfd, contents + offset - 2); | |
956 | if (r_type == R_386_TLS_GD) | |
957 | { | |
958 | /* Check transition from LD access model. Only | |
959 | leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr | |
960 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop | |
961 | can transit to different access model. */ | |
962 | if ((offset + 10) > sec->size || | |
963 | (type != 0x8d && type != 0x04)) | |
964 | return FALSE; | |
965 | ||
966 | val = bfd_get_8 (abfd, contents + offset - 1); | |
967 | if (type == 0x04) | |
968 | { | |
969 | /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */ | |
970 | if (offset < 3) | |
971 | return FALSE; | |
972 | ||
973 | if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d) | |
974 | return FALSE; | |
975 | ||
976 | if ((val & 0xc7) != 0x05 || val == (4 << 3)) | |
977 | return FALSE; | |
978 | } | |
979 | else | |
980 | { | |
981 | /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */ | |
982 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
983 | return FALSE; | |
984 | ||
985 | if (bfd_get_8 (abfd, contents + offset + 9) != 0x90) | |
986 | return FALSE; | |
987 | } | |
988 | } | |
989 | else | |
990 | { | |
991 | /* Check transition from LD access model. Only | |
992 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr | |
993 | can transit to different access model. */ | |
994 | if (type != 0x8d || (offset + 9) > sec->size) | |
995 | return FALSE; | |
996 | ||
997 | val = bfd_get_8 (abfd, contents + offset - 1); | |
998 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
999 | return FALSE; | |
1000 | } | |
1001 | ||
1002 | if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8) | |
1003 | return FALSE; | |
1004 | ||
1005 | r_symndx = ELF32_R_SYM (rel[1].r_info); | |
1006 | if (r_symndx < symtab_hdr->sh_info) | |
1007 | return FALSE; | |
1008 | ||
1009 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1010 | return (h != NULL | |
1011 | && h->root.root.string != NULL | |
1012 | && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32 | |
1013 | || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32) | |
1014 | && (strcmp (h->root.root.string, "___tls_get_addr") == 0)); | |
1015 | ||
1016 | case R_386_TLS_IE: | |
1017 | /* Check transition from IE access model: | |
1018 | movl foo@indntpoff(%rip), %eax | |
1019 | movl foo@indntpoff(%rip), %reg | |
1020 | addl foo@indntpoff(%rip), %reg | |
1021 | */ | |
1022 | ||
1023 | if (offset < 1 || (offset + 4) > sec->size) | |
1024 | return FALSE; | |
1025 | ||
1026 | /* Check "movl foo@tpoff(%rip), %eax" first. */ | |
1027 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1028 | if (val == 0xa1) | |
1029 | return TRUE; | |
1030 | ||
1031 | if (offset < 2) | |
1032 | return FALSE; | |
1033 | ||
1034 | /* Check movl|addl foo@tpoff(%rip), %reg. */ | |
1035 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1036 | return ((type == 0x8b || type == 0x03) | |
1037 | && (val & 0xc7) == 0x05); | |
1038 | ||
1039 | case R_386_TLS_GOTIE: | |
1040 | case R_386_TLS_IE_32: | |
1041 | /* Check transition from {IE_32,GOTIE} access model: | |
1042 | subl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1043 | movl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1044 | addl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1045 | */ | |
1046 | ||
1047 | if (offset < 2 || (offset + 4) > sec->size) | |
1048 | return FALSE; | |
1049 | ||
1050 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1051 | if ((val & 0xc0) != 0x80 || (val & 7) == 4) | |
1052 | return FALSE; | |
1053 | ||
1054 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1055 | return type == 0x8b || type == 0x2b || type == 0x03; | |
1056 | ||
1057 | case R_386_TLS_GOTDESC: | |
1058 | /* Check transition from GDesc access model: | |
1059 | leal x@tlsdesc(%ebx), %eax | |
1060 | ||
1061 | Make sure it's a leal adding ebx to a 32-bit offset | |
1062 | into any register, although it's probably almost always | |
1063 | going to be eax. */ | |
1064 | ||
1065 | if (offset < 2 || (offset + 4) > sec->size) | |
1066 | return FALSE; | |
1067 | ||
1068 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1069 | return FALSE; | |
1070 | ||
1071 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1072 | return (val & 0xc7) == 0x83; | |
1073 | ||
1074 | case R_386_TLS_DESC_CALL: | |
1075 | /* Check transition from GDesc access model: | |
1076 | call *x@tlsdesc(%rax) | |
1077 | */ | |
1078 | if (offset + 2 <= sec->size) | |
1079 | { | |
1080 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
1081 | static i386_opcode16 call = { { 0xff, 0x10 } }; | |
1082 | return bfd_get_16 (abfd, contents + offset) == call.i; | |
1083 | } | |
1084 | ||
1085 | return FALSE; | |
1086 | ||
1087 | default: | |
1088 | abort (); | |
1089 | } | |
1090 | } | |
1091 | ||
1092 | /* Return TRUE if the TLS access transition is OK or no transition | |
1093 | will be performed. Update R_TYPE if there is a transition. */ | |
1094 | ||
1095 | static bfd_boolean | |
1096 | elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd, | |
1097 | asection *sec, bfd_byte *contents, | |
1098 | Elf_Internal_Shdr *symtab_hdr, | |
1099 | struct elf_link_hash_entry **sym_hashes, | |
1100 | unsigned int *r_type, int tls_type, | |
1101 | const Elf_Internal_Rela *rel, | |
1102 | const Elf_Internal_Rela *relend, | |
1103 | struct elf_link_hash_entry *h) | |
1104 | { | |
1105 | unsigned int from_type = *r_type; | |
1106 | unsigned int to_type = from_type; | |
1107 | bfd_boolean check = TRUE; | |
1108 | ||
1109 | switch (from_type) | |
13ae64f3 JJ |
1110 | { |
1111 | case R_386_TLS_GD: | |
67a4f2b7 AO |
1112 | case R_386_TLS_GOTDESC: |
1113 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 1114 | case R_386_TLS_IE_32: |
37e55690 JJ |
1115 | case R_386_TLS_IE: |
1116 | case R_386_TLS_GOTIE: | |
142411ca L |
1117 | if (!info->shared) |
1118 | { | |
1119 | if (h == NULL) | |
1120 | to_type = R_386_TLS_LE_32; | |
1121 | else if (from_type != R_386_TLS_IE | |
1122 | && from_type != R_386_TLS_GOTIE) | |
1123 | to_type = R_386_TLS_IE_32; | |
1124 | } | |
1125 | ||
1126 | /* When we are called from elf_i386_relocate_section, CONTENTS | |
1127 | isn't NULL and there may be additional transitions based on | |
1128 | TLS_TYPE. */ | |
1129 | if (contents != NULL) | |
1130 | { | |
1131 | unsigned int new_to_type = to_type; | |
1132 | ||
1133 | if (!info->shared | |
1134 | && h != NULL | |
1135 | && h->dynindx == -1 | |
1136 | && (tls_type & GOT_TLS_IE)) | |
1137 | new_to_type = R_386_TLS_LE_32; | |
1138 | ||
1139 | if (to_type == R_386_TLS_GD | |
1140 | || to_type == R_386_TLS_GOTDESC | |
1141 | || to_type == R_386_TLS_DESC_CALL) | |
1142 | { | |
1143 | if (tls_type == GOT_TLS_IE_POS) | |
1144 | new_to_type = R_386_TLS_GOTIE; | |
1145 | else if (tls_type & GOT_TLS_IE) | |
1146 | new_to_type = R_386_TLS_IE_32; | |
1147 | } | |
1148 | ||
1149 | /* We checked the transition before when we were called from | |
1150 | elf_i386_check_relocs. We only want to check the new | |
1151 | transition which hasn't been checked before. */ | |
1152 | check = new_to_type != to_type && from_type == to_type; | |
1153 | to_type = new_to_type; | |
1154 | } | |
1155 | ||
1156 | break; | |
1157 | ||
13ae64f3 | 1158 | case R_386_TLS_LDM: |
142411ca L |
1159 | if (!info->shared) |
1160 | to_type = R_386_TLS_LE_32; | |
1161 | break; | |
1162 | ||
1163 | default: | |
1164 | return TRUE; | |
1165 | } | |
1166 | ||
1167 | /* Return TRUE if there is no transition. */ | |
1168 | if (from_type == to_type) | |
1169 | return TRUE; | |
1170 | ||
1171 | /* Check if the transition can be performed. */ | |
1172 | if (check | |
1173 | && ! elf_i386_check_tls_transition (abfd, sec, contents, | |
1174 | symtab_hdr, sym_hashes, | |
1175 | from_type, rel, relend)) | |
1176 | { | |
2f629d23 | 1177 | reloc_howto_type *from, *to; |
142411ca L |
1178 | |
1179 | from = elf_i386_rtype_to_howto (abfd, from_type); | |
1180 | to = elf_i386_rtype_to_howto (abfd, to_type); | |
1181 | ||
1182 | (*_bfd_error_handler) | |
1183 | (_("%B: TLS transition from %s to %s against `%s' at 0x%lx " | |
1184 | "in section `%A' failed"), | |
1185 | abfd, sec, from->name, to->name, | |
1186 | h ? h->root.root.string : "a local symbol", | |
1187 | (unsigned long) rel->r_offset); | |
1188 | bfd_set_error (bfd_error_bad_value); | |
1189 | return FALSE; | |
13ae64f3 JJ |
1190 | } |
1191 | ||
142411ca L |
1192 | *r_type = to_type; |
1193 | return TRUE; | |
13ae64f3 JJ |
1194 | } |
1195 | ||
252b5132 | 1196 | /* Look through the relocs for a section during the first phase, and |
0ac8d2ca AM |
1197 | calculate needed space in the global offset table, procedure linkage |
1198 | table, and dynamic reloc sections. */ | |
252b5132 | 1199 | |
b34976b6 | 1200 | static bfd_boolean |
55fd94b0 AM |
1201 | elf_i386_check_relocs (bfd *abfd, |
1202 | struct bfd_link_info *info, | |
1203 | asection *sec, | |
1204 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1205 | { |
6725bdbf | 1206 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1207 | Elf_Internal_Shdr *symtab_hdr; |
1208 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
1209 | const Elf_Internal_Rela *rel; |
1210 | const Elf_Internal_Rela *rel_end; | |
252b5132 RH |
1211 | asection *sreloc; |
1212 | ||
1049f94e | 1213 | if (info->relocatable) |
b34976b6 | 1214 | return TRUE; |
252b5132 | 1215 | |
0ffa91dd NC |
1216 | BFD_ASSERT (is_i386_elf (abfd)); |
1217 | ||
6725bdbf | 1218 | htab = elf_i386_hash_table (info); |
0ffa91dd | 1219 | symtab_hdr = &elf_symtab_hdr (abfd); |
252b5132 | 1220 | sym_hashes = elf_sym_hashes (abfd); |
252b5132 | 1221 | |
252b5132 RH |
1222 | sreloc = NULL; |
1223 | ||
1224 | rel_end = relocs + sec->reloc_count; | |
1225 | for (rel = relocs; rel < rel_end; rel++) | |
1226 | { | |
13ae64f3 | 1227 | unsigned int r_type; |
252b5132 RH |
1228 | unsigned long r_symndx; |
1229 | struct elf_link_hash_entry *h; | |
1230 | ||
1231 | r_symndx = ELF32_R_SYM (rel->r_info); | |
13ae64f3 | 1232 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 1233 | |
d9bc7a44 | 1234 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
f5f31454 | 1235 | { |
d003868e AM |
1236 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
1237 | abfd, | |
8f615d07 | 1238 | r_symndx); |
b34976b6 | 1239 | return FALSE; |
f5f31454 L |
1240 | } |
1241 | ||
252b5132 RH |
1242 | if (r_symndx < symtab_hdr->sh_info) |
1243 | h = NULL; | |
1244 | else | |
71cb9464 L |
1245 | { |
1246 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1247 | while (h->root.type == bfd_link_hash_indirect | |
1248 | || h->root.type == bfd_link_hash_warning) | |
1249 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1250 | } | |
252b5132 | 1251 | |
142411ca L |
1252 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1253 | symtab_hdr, sym_hashes, | |
1254 | &r_type, GOT_UNKNOWN, | |
1255 | rel, rel_end, h)) | |
1256 | return FALSE; | |
13ae64f3 JJ |
1257 | |
1258 | switch (r_type) | |
252b5132 | 1259 | { |
37e55690 JJ |
1260 | case R_386_TLS_LDM: |
1261 | htab->tls_ldm_got.refcount += 1; | |
1262 | goto create_got; | |
1263 | ||
1264 | case R_386_PLT32: | |
1265 | /* This symbol requires a procedure linkage table entry. We | |
1266 | actually build the entry in adjust_dynamic_symbol, | |
1267 | because this might be a case of linking PIC code which is | |
1268 | never referenced by a dynamic object, in which case we | |
1269 | don't need to generate a procedure linkage table entry | |
1270 | after all. */ | |
1271 | ||
1272 | /* If this is a local symbol, we resolve it directly without | |
1273 | creating a procedure linkage table entry. */ | |
1274 | if (h == NULL) | |
1275 | continue; | |
1276 | ||
f5385ebf | 1277 | h->needs_plt = 1; |
37e55690 JJ |
1278 | h->plt.refcount += 1; |
1279 | break; | |
1280 | ||
13ae64f3 | 1281 | case R_386_TLS_IE_32: |
37e55690 JJ |
1282 | case R_386_TLS_IE: |
1283 | case R_386_TLS_GOTIE: | |
13ae64f3 JJ |
1284 | if (info->shared) |
1285 | info->flags |= DF_STATIC_TLS; | |
37e55690 JJ |
1286 | /* Fall through */ |
1287 | ||
252b5132 | 1288 | case R_386_GOT32: |
13ae64f3 | 1289 | case R_386_TLS_GD: |
67a4f2b7 AO |
1290 | case R_386_TLS_GOTDESC: |
1291 | case R_386_TLS_DESC_CALL: | |
252b5132 | 1292 | /* This symbol requires a global offset table entry. */ |
13ae64f3 JJ |
1293 | { |
1294 | int tls_type, old_tls_type; | |
1295 | ||
1296 | switch (r_type) | |
1297 | { | |
1298 | default: | |
1299 | case R_386_GOT32: tls_type = GOT_NORMAL; break; | |
1300 | case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; | |
67a4f2b7 AO |
1301 | case R_386_TLS_GOTDESC: |
1302 | case R_386_TLS_DESC_CALL: | |
1303 | tls_type = GOT_TLS_GDESC; break; | |
37e55690 JJ |
1304 | case R_386_TLS_IE_32: |
1305 | if (ELF32_R_TYPE (rel->r_info) == r_type) | |
1306 | tls_type = GOT_TLS_IE_NEG; | |
1307 | else | |
ebcfb3c0 JJ |
1308 | /* If this is a GD->IE transition, we may use either of |
1309 | R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ | |
37e55690 JJ |
1310 | tls_type = GOT_TLS_IE; |
1311 | break; | |
1312 | case R_386_TLS_IE: | |
1313 | case R_386_TLS_GOTIE: | |
1314 | tls_type = GOT_TLS_IE_POS; break; | |
13ae64f3 JJ |
1315 | } |
1316 | ||
1317 | if (h != NULL) | |
1318 | { | |
1319 | h->got.refcount += 1; | |
1320 | old_tls_type = elf_i386_hash_entry(h)->tls_type; | |
1321 | } | |
1322 | else | |
1323 | { | |
1324 | bfd_signed_vma *local_got_refcounts; | |
1325 | ||
1326 | /* This is a global offset table entry for a local symbol. */ | |
1327 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1328 | if (local_got_refcounts == NULL) | |
1329 | { | |
1330 | bfd_size_type size; | |
1331 | ||
1332 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
1333 | size *= (sizeof (bfd_signed_vma) |
1334 | + sizeof (bfd_vma) + sizeof(char)); | |
55fd94b0 | 1335 | local_got_refcounts = bfd_zalloc (abfd, size); |
13ae64f3 | 1336 | if (local_got_refcounts == NULL) |
b34976b6 | 1337 | return FALSE; |
13ae64f3 | 1338 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
67a4f2b7 AO |
1339 | elf_i386_local_tlsdesc_gotent (abfd) |
1340 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); | |
13ae64f3 | 1341 | elf_i386_local_got_tls_type (abfd) |
67a4f2b7 | 1342 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
13ae64f3 JJ |
1343 | } |
1344 | local_got_refcounts[r_symndx] += 1; | |
1345 | old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx]; | |
1346 | } | |
1347 | ||
37e55690 JJ |
1348 | if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) |
1349 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1350 | /* If a TLS symbol is accessed using IE at least once, |
1351 | there is no point to use dynamic model for it. */ | |
ebcfb3c0 | 1352 | else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
67a4f2b7 | 1353 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
37e55690 | 1354 | || (tls_type & GOT_TLS_IE) == 0)) |
13ae64f3 | 1355 | { |
67a4f2b7 | 1356 | if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type)) |
37e55690 | 1357 | tls_type = old_tls_type; |
67a4f2b7 AO |
1358 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
1359 | && GOT_TLS_GD_ANY_P (tls_type)) | |
1360 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1361 | else |
1362 | { | |
1363 | (*_bfd_error_handler) | |
d003868e | 1364 | (_("%B: `%s' accessed both as normal and " |
55fd94b0 | 1365 | "thread local symbol"), |
d003868e | 1366 | abfd, |
37e55690 | 1367 | h ? h->root.root.string : "<local>"); |
b34976b6 | 1368 | return FALSE; |
13ae64f3 JJ |
1369 | } |
1370 | } | |
1371 | ||
1372 | if (old_tls_type != tls_type) | |
1373 | { | |
1374 | if (h != NULL) | |
1375 | elf_i386_hash_entry (h)->tls_type = tls_type; | |
1376 | else | |
1377 | elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1378 | } | |
1379 | } | |
0ac8d2ca AM |
1380 | /* Fall through */ |
1381 | ||
1382 | case R_386_GOTOFF: | |
1383 | case R_386_GOTPC: | |
13ae64f3 | 1384 | create_got: |
0ac8d2ca AM |
1385 | if (htab->sgot == NULL) |
1386 | { | |
1387 | if (htab->elf.dynobj == NULL) | |
1388 | htab->elf.dynobj = abfd; | |
1389 | if (!create_got_section (htab->elf.dynobj, info)) | |
b34976b6 | 1390 | return FALSE; |
0ac8d2ca | 1391 | } |
37e55690 JJ |
1392 | if (r_type != R_386_TLS_IE) |
1393 | break; | |
1394 | /* Fall through */ | |
252b5132 | 1395 | |
37e55690 JJ |
1396 | case R_386_TLS_LE_32: |
1397 | case R_386_TLS_LE: | |
1398 | if (!info->shared) | |
1399 | break; | |
bffbf940 | 1400 | info->flags |= DF_STATIC_TLS; |
b34976b6 | 1401 | /* Fall through */ |
252b5132 RH |
1402 | |
1403 | case R_386_32: | |
1404 | case R_386_PC32: | |
12d0ee4a | 1405 | if (h != NULL && !info->shared) |
6725bdbf | 1406 | { |
12d0ee4a | 1407 | /* If this reloc is in a read-only section, we might |
ebe50bae AM |
1408 | need a copy reloc. We can't check reliably at this |
1409 | stage whether the section is read-only, as input | |
1410 | sections have not yet been mapped to output sections. | |
1411 | Tentatively set the flag for now, and correct in | |
1412 | adjust_dynamic_symbol. */ | |
f5385ebf | 1413 | h->non_got_ref = 1; |
12d0ee4a AM |
1414 | |
1415 | /* We may need a .plt entry if the function this reloc | |
1416 | refers to is in a shared lib. */ | |
51b64d56 | 1417 | h->plt.refcount += 1; |
c6585bbb | 1418 | if (r_type != R_386_PC32) |
f5385ebf | 1419 | h->pointer_equality_needed = 1; |
6725bdbf | 1420 | } |
7843f00e | 1421 | |
252b5132 | 1422 | /* If we are creating a shared library, and this is a reloc |
f69da49f AM |
1423 | against a global symbol, or a non PC relative reloc |
1424 | against a local symbol, then we need to copy the reloc | |
1425 | into the shared library. However, if we are linking with | |
1426 | -Bsymbolic, we do not need to copy a reloc against a | |
1427 | global symbol which is defined in an object we are | |
1428 | including in the link (i.e., DEF_REGULAR is set). At | |
1429 | this point we have not seen all the input files, so it is | |
1430 | possible that DEF_REGULAR is not set now but will be set | |
1f655a09 L |
1431 | later (it is never cleared). In case of a weak definition, |
1432 | DEF_REGULAR may be cleared later by a strong definition in | |
ebe50bae | 1433 | a shared library. We account for that possibility below by |
1f655a09 L |
1434 | storing information in the relocs_copied field of the hash |
1435 | table entry. A similar situation occurs when creating | |
1436 | shared libraries and symbol visibility changes render the | |
12d0ee4a | 1437 | symbol local. |
56882138 | 1438 | |
12d0ee4a AM |
1439 | If on the other hand, we are creating an executable, we |
1440 | may need to keep relocations for symbols satisfied by a | |
1441 | dynamic library if we manage to avoid copy relocs for the | |
1442 | symbol. */ | |
1443 | if ((info->shared | |
1444 | && (sec->flags & SEC_ALLOC) != 0 | |
13ae64f3 | 1445 | && (r_type != R_386_PC32 |
12d0ee4a | 1446 | || (h != NULL |
55255dae | 1447 | && (! SYMBOLIC_BIND (info, h) |
12d0ee4a | 1448 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1449 | || !h->def_regular)))) |
a23b6845 AM |
1450 | || (ELIMINATE_COPY_RELOCS |
1451 | && !info->shared | |
12d0ee4a AM |
1452 | && (sec->flags & SEC_ALLOC) != 0 |
1453 | && h != NULL | |
12d0ee4a | 1454 | && (h->root.type == bfd_link_hash_defweak |
0f88be7a | 1455 | || !h->def_regular))) |
252b5132 | 1456 | { |
ec338859 AM |
1457 | struct elf_i386_dyn_relocs *p; |
1458 | struct elf_i386_dyn_relocs **head; | |
1459 | ||
12d0ee4a AM |
1460 | /* We must copy these reloc types into the output file. |
1461 | Create a reloc section in dynobj and make room for | |
1462 | this reloc. */ | |
252b5132 RH |
1463 | if (sreloc == NULL) |
1464 | { | |
0ac8d2ca AM |
1465 | if (htab->elf.dynobj == NULL) |
1466 | htab->elf.dynobj = abfd; | |
1467 | ||
83bac4b0 NC |
1468 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1469 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE); | |
1470 | ||
252b5132 | 1471 | if (sreloc == NULL) |
83bac4b0 | 1472 | return FALSE; |
252b5132 RH |
1473 | } |
1474 | ||
0c715baa AM |
1475 | /* If this is a global symbol, we count the number of |
1476 | relocations we need for this symbol. */ | |
1477 | if (h != NULL) | |
252b5132 | 1478 | { |
ec338859 | 1479 | head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs; |
0c715baa AM |
1480 | } |
1481 | else | |
1482 | { | |
e81d3500 | 1483 | void **vpp; |
ec338859 AM |
1484 | /* Track dynamic relocs needed for local syms too. |
1485 | We really need local syms available to do this | |
1486 | easily. Oh well. */ | |
1487 | ||
1488 | asection *s; | |
1489 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
1490 | sec, r_symndx); | |
1491 | if (s == NULL) | |
b34976b6 | 1492 | return FALSE; |
ec338859 | 1493 | |
e81d3500 DD |
1494 | vpp = &elf_section_data (s)->local_dynrel; |
1495 | head = (struct elf_i386_dyn_relocs **)vpp; | |
ec338859 AM |
1496 | } |
1497 | ||
1498 | p = *head; | |
1499 | if (p == NULL || p->sec != sec) | |
1500 | { | |
1501 | bfd_size_type amt = sizeof *p; | |
55fd94b0 | 1502 | p = bfd_alloc (htab->elf.dynobj, amt); |
ec338859 | 1503 | if (p == NULL) |
b34976b6 | 1504 | return FALSE; |
ec338859 AM |
1505 | p->next = *head; |
1506 | *head = p; | |
1507 | p->sec = sec; | |
1508 | p->count = 0; | |
1509 | p->pc_count = 0; | |
252b5132 | 1510 | } |
ec338859 AM |
1511 | |
1512 | p->count += 1; | |
13ae64f3 | 1513 | if (r_type == R_386_PC32) |
ec338859 | 1514 | p->pc_count += 1; |
252b5132 | 1515 | } |
252b5132 RH |
1516 | break; |
1517 | ||
1518 | /* This relocation describes the C++ object vtable hierarchy. | |
1519 | Reconstruct it for later use during GC. */ | |
1520 | case R_386_GNU_VTINHERIT: | |
d17e0c6e | 1521 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 1522 | return FALSE; |
252b5132 RH |
1523 | break; |
1524 | ||
1525 | /* This relocation describes which C++ vtable entries are actually | |
1526 | used. Record for later use during GC. */ | |
1527 | case R_386_GNU_VTENTRY: | |
c6aa130f MS |
1528 | BFD_ASSERT (h != NULL); |
1529 | if (h != NULL | |
1530 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1531 | return FALSE; |
252b5132 RH |
1532 | break; |
1533 | ||
1534 | default: | |
1535 | break; | |
1536 | } | |
1537 | } | |
1538 | ||
b34976b6 | 1539 | return TRUE; |
252b5132 RH |
1540 | } |
1541 | ||
1542 | /* Return the section that should be marked against GC for a given | |
1543 | relocation. */ | |
1544 | ||
1545 | static asection * | |
55fd94b0 | 1546 | elf_i386_gc_mark_hook (asection *sec, |
07adf181 | 1547 | struct bfd_link_info *info, |
55fd94b0 AM |
1548 | Elf_Internal_Rela *rel, |
1549 | struct elf_link_hash_entry *h, | |
1550 | Elf_Internal_Sym *sym) | |
252b5132 RH |
1551 | { |
1552 | if (h != NULL) | |
07adf181 AM |
1553 | switch (ELF32_R_TYPE (rel->r_info)) |
1554 | { | |
1555 | case R_386_GNU_VTINHERIT: | |
1556 | case R_386_GNU_VTENTRY: | |
1557 | return NULL; | |
1558 | } | |
1559 | ||
1560 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
1561 | } |
1562 | ||
1563 | /* Update the got entry reference counts for the section being removed. */ | |
1564 | ||
b34976b6 | 1565 | static bfd_boolean |
55fd94b0 AM |
1566 | elf_i386_gc_sweep_hook (bfd *abfd, |
1567 | struct bfd_link_info *info, | |
1568 | asection *sec, | |
1569 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1570 | { |
dd5724d5 AM |
1571 | Elf_Internal_Shdr *symtab_hdr; |
1572 | struct elf_link_hash_entry **sym_hashes; | |
1573 | bfd_signed_vma *local_got_refcounts; | |
1574 | const Elf_Internal_Rela *rel, *relend; | |
dd5724d5 | 1575 | |
7dda2462 TG |
1576 | if (info->relocatable) |
1577 | return TRUE; | |
1578 | ||
ec338859 | 1579 | elf_section_data (sec)->local_dynrel = NULL; |
dd5724d5 | 1580 | |
0ffa91dd | 1581 | symtab_hdr = &elf_symtab_hdr (abfd); |
6725bdbf AM |
1582 | sym_hashes = elf_sym_hashes (abfd); |
1583 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
dd5724d5 AM |
1584 | |
1585 | relend = relocs + sec->reloc_count; | |
1586 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1587 | { |
1588 | unsigned long r_symndx; | |
1589 | unsigned int r_type; | |
1590 | struct elf_link_hash_entry *h = NULL; | |
37e55690 | 1591 | |
26e41594 AM |
1592 | r_symndx = ELF32_R_SYM (rel->r_info); |
1593 | if (r_symndx >= symtab_hdr->sh_info) | |
1594 | { | |
1595 | struct elf_i386_link_hash_entry *eh; | |
1596 | struct elf_i386_dyn_relocs **pp; | |
1597 | struct elf_i386_dyn_relocs *p; | |
dd5724d5 | 1598 | |
26e41594 | 1599 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1600 | while (h->root.type == bfd_link_hash_indirect |
1601 | || h->root.type == bfd_link_hash_warning) | |
1602 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1603 | eh = (struct elf_i386_link_hash_entry *) h; |
0c715baa | 1604 | |
26e41594 AM |
1605 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1606 | if (p->sec == sec) | |
1607 | { | |
1608 | /* Everything must go for SEC. */ | |
1609 | *pp = p->next; | |
1610 | break; | |
1611 | } | |
1612 | } | |
0c715baa | 1613 | |
26e41594 | 1614 | r_type = ELF32_R_TYPE (rel->r_info); |
142411ca L |
1615 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1616 | symtab_hdr, sym_hashes, | |
1617 | &r_type, GOT_UNKNOWN, | |
1618 | rel, relend, h)) | |
1619 | return FALSE; | |
1620 | ||
26e41594 AM |
1621 | switch (r_type) |
1622 | { | |
1623 | case R_386_TLS_LDM: | |
1624 | if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0) | |
1625 | elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1; | |
1626 | break; | |
0c715baa | 1627 | |
26e41594 | 1628 | case R_386_TLS_GD: |
67a4f2b7 AO |
1629 | case R_386_TLS_GOTDESC: |
1630 | case R_386_TLS_DESC_CALL: | |
26e41594 AM |
1631 | case R_386_TLS_IE_32: |
1632 | case R_386_TLS_IE: | |
1633 | case R_386_TLS_GOTIE: | |
1634 | case R_386_GOT32: | |
1635 | if (h != NULL) | |
1636 | { | |
1637 | if (h->got.refcount > 0) | |
1638 | h->got.refcount -= 1; | |
1639 | } | |
1640 | else if (local_got_refcounts != NULL) | |
1641 | { | |
1642 | if (local_got_refcounts[r_symndx] > 0) | |
1643 | local_got_refcounts[r_symndx] -= 1; | |
1644 | } | |
1645 | break; | |
0c715baa | 1646 | |
26e41594 AM |
1647 | case R_386_32: |
1648 | case R_386_PC32: | |
1649 | if (info->shared) | |
1650 | break; | |
1651 | /* Fall through */ | |
6725bdbf | 1652 | |
26e41594 AM |
1653 | case R_386_PLT32: |
1654 | if (h != NULL) | |
1655 | { | |
1656 | if (h->plt.refcount > 0) | |
1657 | h->plt.refcount -= 1; | |
1658 | } | |
1659 | break; | |
dd5724d5 | 1660 | |
26e41594 AM |
1661 | default: |
1662 | break; | |
1663 | } | |
1664 | } | |
252b5132 | 1665 | |
b34976b6 | 1666 | return TRUE; |
252b5132 RH |
1667 | } |
1668 | ||
1669 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1670 | regular object. The current definition is in some section of the | |
1671 | dynamic object, but we're not including those sections. We have to | |
1672 | change the definition to something the rest of the link can | |
1673 | understand. */ | |
1674 | ||
b34976b6 | 1675 | static bfd_boolean |
55fd94b0 AM |
1676 | elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info, |
1677 | struct elf_link_hash_entry *h) | |
252b5132 | 1678 | { |
6725bdbf | 1679 | struct elf_i386_link_hash_table *htab; |
252b5132 | 1680 | asection *s; |
252b5132 | 1681 | |
252b5132 RH |
1682 | /* If this is a function, put it in the procedure linkage table. We |
1683 | will fill in the contents of the procedure linkage table later, | |
1684 | when we know the address of the .got section. */ | |
1685 | if (h->type == STT_FUNC | |
f5385ebf | 1686 | || h->needs_plt) |
252b5132 | 1687 | { |
6725bdbf | 1688 | if (h->plt.refcount <= 0 |
9c7a29a3 AM |
1689 | || SYMBOL_CALLS_LOCAL (info, h) |
1690 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1691 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
1692 | { |
1693 | /* This case can occur if we saw a PLT32 reloc in an input | |
dd5724d5 AM |
1694 | file, but the symbol was never referred to by a dynamic |
1695 | object, or if all references were garbage collected. In | |
1696 | such a case, we don't actually need to build a procedure | |
1697 | linkage table, and we can just do a PC32 reloc instead. */ | |
bbd7ec4a | 1698 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1699 | h->needs_plt = 0; |
252b5132 RH |
1700 | } |
1701 | ||
b34976b6 | 1702 | return TRUE; |
252b5132 | 1703 | } |
6725bdbf AM |
1704 | else |
1705 | /* It's possible that we incorrectly decided a .plt reloc was | |
1706 | needed for an R_386_PC32 reloc to a non-function sym in | |
1707 | check_relocs. We can't decide accurately between function and | |
1708 | non-function syms in check-relocs; Objects loaded later in | |
1709 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1710 | h->plt.offset = (bfd_vma) -1; |
252b5132 RH |
1711 | |
1712 | /* If this is a weak symbol, and there is a real definition, the | |
1713 | processor independent code will have arranged for us to see the | |
1714 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1715 | if (h->u.weakdef != NULL) |
252b5132 | 1716 | { |
f6e332e6 AM |
1717 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1718 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1719 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1720 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 1721 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 1722 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 1723 | return TRUE; |
252b5132 RH |
1724 | } |
1725 | ||
1726 | /* This is a reference to a symbol defined by a dynamic object which | |
1727 | is not a function. */ | |
1728 | ||
1729 | /* If we are creating a shared library, we must presume that the | |
1730 | only references to the symbol are via the global offset table. | |
1731 | For such cases we need not do anything here; the relocations will | |
1732 | be handled correctly by relocate_section. */ | |
1733 | if (info->shared) | |
b34976b6 | 1734 | return TRUE; |
252b5132 | 1735 | |
7843f00e ILT |
1736 | /* If there are no references to this symbol that do not use the |
1737 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1738 | if (!h->non_got_ref) |
b34976b6 | 1739 | return TRUE; |
7843f00e | 1740 | |
8bd621d8 AM |
1741 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1742 | if (info->nocopyreloc) | |
1743 | { | |
f5385ebf | 1744 | h->non_got_ref = 0; |
b34976b6 | 1745 | return TRUE; |
8bd621d8 AM |
1746 | } |
1747 | ||
643796e3 DJ |
1748 | htab = elf_i386_hash_table (info); |
1749 | ||
1750 | /* If there aren't any dynamic relocs in read-only sections, then | |
1751 | we can keep the dynamic relocs and avoid the copy reloc. This | |
1752 | doesn't work on VxWorks, where we can not have dynamic relocations | |
1753 | (other than copy and jump slot relocations) in an executable. */ | |
1754 | if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks) | |
ebe50bae | 1755 | { |
a23b6845 AM |
1756 | struct elf_i386_link_hash_entry * eh; |
1757 | struct elf_i386_dyn_relocs *p; | |
ebe50bae | 1758 | |
a23b6845 AM |
1759 | eh = (struct elf_i386_link_hash_entry *) h; |
1760 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1761 | { | |
1762 | s = p->sec->output_section; | |
1763 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1764 | break; | |
1765 | } | |
1766 | ||
a23b6845 AM |
1767 | if (p == NULL) |
1768 | { | |
f5385ebf | 1769 | h->non_got_ref = 0; |
a23b6845 AM |
1770 | return TRUE; |
1771 | } | |
ebe50bae AM |
1772 | } |
1773 | ||
909272ee AM |
1774 | if (h->size == 0) |
1775 | { | |
1776 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1777 | h->root.root.string); | |
1778 | return TRUE; | |
1779 | } | |
1780 | ||
252b5132 RH |
1781 | /* We must allocate the symbol in our .dynbss section, which will |
1782 | become part of the .bss section of the executable. There will be | |
1783 | an entry for this symbol in the .dynsym section. The dynamic | |
1784 | object will contain position independent code, so all references | |
1785 | from the dynamic object to this symbol will go through the global | |
1786 | offset table. The dynamic linker will use the .dynsym entry to | |
1787 | determine the address it must put in the global offset table, so | |
1788 | both the dynamic object and the regular object will refer to the | |
1789 | same memory location for the variable. */ | |
1790 | ||
252b5132 RH |
1791 | /* We must generate a R_386_COPY reloc to tell the dynamic linker to |
1792 | copy the initial value out of the dynamic object and into the | |
0ac8d2ca | 1793 | runtime process image. */ |
252b5132 RH |
1794 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1795 | { | |
eea6121a | 1796 | htab->srelbss->size += sizeof (Elf32_External_Rel); |
f5385ebf | 1797 | h->needs_copy = 1; |
252b5132 RH |
1798 | } |
1799 | ||
0ac8d2ca | 1800 | s = htab->sdynbss; |
252b5132 | 1801 | |
027297b7 | 1802 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
1803 | } |
1804 | ||
6725bdbf | 1805 | /* Allocate space in .plt, .got and associated reloc sections for |
0c715baa | 1806 | dynamic relocs. */ |
6725bdbf | 1807 | |
b34976b6 | 1808 | static bfd_boolean |
55fd94b0 | 1809 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
6725bdbf AM |
1810 | { |
1811 | struct bfd_link_info *info; | |
1812 | struct elf_i386_link_hash_table *htab; | |
5a15f56f | 1813 | struct elf_i386_link_hash_entry *eh; |
0c715baa | 1814 | struct elf_i386_dyn_relocs *p; |
6725bdbf | 1815 | |
e92d460e | 1816 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 1817 | return TRUE; |
6725bdbf | 1818 | |
e92d460e AM |
1819 | if (h->root.type == bfd_link_hash_warning) |
1820 | /* When warning symbols are created, they **replace** the "real" | |
1821 | entry in the hash table, thus we never get to see the real | |
1822 | symbol in a hash traversal. So look at it now. */ | |
1823 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1824 | ||
6725bdbf AM |
1825 | info = (struct bfd_link_info *) inf; |
1826 | htab = elf_i386_hash_table (info); | |
1827 | ||
ebe50bae | 1828 | if (htab->elf.dynamic_sections_created |
9c7a29a3 | 1829 | && h->plt.refcount > 0) |
6725bdbf | 1830 | { |
5a15f56f AM |
1831 | /* Make sure this symbol is output as a dynamic symbol. |
1832 | Undefined weak syms won't yet be marked as dynamic. */ | |
1833 | if (h->dynindx == -1 | |
f5385ebf | 1834 | && !h->forced_local) |
5a15f56f | 1835 | { |
c152c796 | 1836 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1837 | return FALSE; |
5a15f56f AM |
1838 | } |
1839 | ||
4e795f50 AM |
1840 | if (info->shared |
1841 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
ced53ee5 | 1842 | { |
0ac8d2ca | 1843 | asection *s = htab->splt; |
6725bdbf | 1844 | |
ced53ee5 AM |
1845 | /* If this is the first .plt entry, make room for the special |
1846 | first entry. */ | |
eea6121a AM |
1847 | if (s->size == 0) |
1848 | s->size += PLT_ENTRY_SIZE; | |
6725bdbf | 1849 | |
eea6121a | 1850 | h->plt.offset = s->size; |
6725bdbf | 1851 | |
ced53ee5 AM |
1852 | /* If this symbol is not defined in a regular file, and we are |
1853 | not generating a shared library, then set the symbol to this | |
1854 | location in the .plt. This is required to make function | |
1855 | pointers compare as equal between the normal executable and | |
1856 | the shared library. */ | |
1857 | if (! info->shared | |
f5385ebf | 1858 | && !h->def_regular) |
ced53ee5 AM |
1859 | { |
1860 | h->root.u.def.section = s; | |
1861 | h->root.u.def.value = h->plt.offset; | |
1862 | } | |
6725bdbf | 1863 | |
ced53ee5 | 1864 | /* Make room for this entry. */ |
eea6121a | 1865 | s->size += PLT_ENTRY_SIZE; |
6725bdbf | 1866 | |
ced53ee5 AM |
1867 | /* We also need to make an entry in the .got.plt section, which |
1868 | will be placed in the .got section by the linker script. */ | |
eea6121a | 1869 | htab->sgotplt->size += 4; |
6725bdbf | 1870 | |
6725bdbf | 1871 | /* We also need to make an entry in the .rel.plt section. */ |
eea6121a | 1872 | htab->srelplt->size += sizeof (Elf32_External_Rel); |
5ae0bfb6 | 1873 | htab->next_tls_desc_index++; |
eac338cf PB |
1874 | |
1875 | if (htab->is_vxworks && !info->shared) | |
1876 | { | |
1877 | /* VxWorks has a second set of relocations for each PLT entry | |
1878 | in executables. They go in a separate relocation section, | |
1879 | which is processed by the kernel loader. */ | |
1880 | ||
1881 | /* There are two relocations for the initial PLT entry: an | |
1882 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an | |
1883 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
1884 | ||
1885 | if (h->plt.offset == PLT_ENTRY_SIZE) | |
1886 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); | |
1887 | ||
1888 | /* There are two extra relocations for each subsequent PLT entry: | |
1889 | an R_386_32 relocation for the GOT entry, and an R_386_32 | |
1890 | relocation for the PLT entry. */ | |
1891 | ||
1892 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); | |
1893 | } | |
6725bdbf | 1894 | } |
ced53ee5 AM |
1895 | else |
1896 | { | |
51b64d56 | 1897 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1898 | h->needs_plt = 0; |
ced53ee5 | 1899 | } |
6725bdbf AM |
1900 | } |
1901 | else | |
1902 | { | |
51b64d56 | 1903 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1904 | h->needs_plt = 0; |
6725bdbf AM |
1905 | } |
1906 | ||
67a4f2b7 AO |
1907 | eh = (struct elf_i386_link_hash_entry *) h; |
1908 | eh->tlsdesc_got = (bfd_vma) -1; | |
1909 | ||
37e55690 | 1910 | /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, |
13ae64f3 JJ |
1911 | make it a R_386_TLS_LE_32 requiring no TLS entry. */ |
1912 | if (h->got.refcount > 0 | |
1913 | && !info->shared | |
1914 | && h->dynindx == -1 | |
37e55690 | 1915 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE)) |
cedb70c5 | 1916 | h->got.offset = (bfd_vma) -1; |
13ae64f3 | 1917 | else if (h->got.refcount > 0) |
6725bdbf | 1918 | { |
0ac8d2ca | 1919 | asection *s; |
b34976b6 | 1920 | bfd_boolean dyn; |
13ae64f3 | 1921 | int tls_type = elf_i386_hash_entry(h)->tls_type; |
6725bdbf | 1922 | |
5a15f56f AM |
1923 | /* Make sure this symbol is output as a dynamic symbol. |
1924 | Undefined weak syms won't yet be marked as dynamic. */ | |
1925 | if (h->dynindx == -1 | |
f5385ebf | 1926 | && !h->forced_local) |
5a15f56f | 1927 | { |
c152c796 | 1928 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 1929 | return FALSE; |
5a15f56f AM |
1930 | } |
1931 | ||
6725bdbf | 1932 | s = htab->sgot; |
67a4f2b7 AO |
1933 | if (GOT_TLS_GDESC_P (tls_type)) |
1934 | { | |
1935 | eh->tlsdesc_got = htab->sgotplt->size | |
1936 | - elf_i386_compute_jump_table_size (htab); | |
1937 | htab->sgotplt->size += 8; | |
1938 | h->got.offset = (bfd_vma) -2; | |
1939 | } | |
1940 | if (! GOT_TLS_GDESC_P (tls_type) | |
1941 | || GOT_TLS_GD_P (tls_type)) | |
1942 | { | |
1943 | h->got.offset = s->size; | |
1944 | s->size += 4; | |
1945 | /* R_386_TLS_GD needs 2 consecutive GOT slots. */ | |
1946 | if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH) | |
1947 | s->size += 4; | |
1948 | } | |
ebe50bae | 1949 | dyn = htab->elf.dynamic_sections_created; |
13ae64f3 | 1950 | /* R_386_TLS_IE_32 needs one dynamic relocation, |
37e55690 JJ |
1951 | R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, |
1952 | (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we | |
1953 | need two), R_386_TLS_GD needs one if local symbol and two if | |
1954 | global. */ | |
1955 | if (tls_type == GOT_TLS_IE_BOTH) | |
eea6121a | 1956 | htab->srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 | 1957 | else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1) |
37e55690 | 1958 | || (tls_type & GOT_TLS_IE)) |
eea6121a | 1959 | htab->srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 1960 | else if (GOT_TLS_GD_P (tls_type)) |
eea6121a | 1961 | htab->srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
1962 | else if (! GOT_TLS_GDESC_P (tls_type) |
1963 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
1964 | || h->root.type != bfd_link_hash_undefweak) | |
ef5aade5 L |
1965 | && (info->shared |
1966 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
eea6121a | 1967 | htab->srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
1968 | if (GOT_TLS_GDESC_P (tls_type)) |
1969 | htab->srelplt->size += sizeof (Elf32_External_Rel); | |
6725bdbf AM |
1970 | } |
1971 | else | |
51b64d56 | 1972 | h->got.offset = (bfd_vma) -1; |
6725bdbf | 1973 | |
5a15f56f | 1974 | if (eh->dyn_relocs == NULL) |
b34976b6 | 1975 | return TRUE; |
5a15f56f | 1976 | |
0c715baa AM |
1977 | /* In the shared -Bsymbolic case, discard space allocated for |
1978 | dynamic pc-relative relocs against symbols which turn out to be | |
1979 | defined in regular objects. For the normal shared case, discard | |
0ac8d2ca AM |
1980 | space for pc-relative relocs that have become local due to symbol |
1981 | visibility changes. */ | |
0c715baa AM |
1982 | |
1983 | if (info->shared) | |
5a15f56f | 1984 | { |
09695f56 AM |
1985 | /* The only reloc that uses pc_count is R_386_PC32, which will |
1986 | appear on a call or on something like ".long foo - .". We | |
1987 | want calls to protected symbols to resolve directly to the | |
1988 | function rather than going via the plt. If people want | |
1989 | function pointer comparisons to work as expected then they | |
1990 | should avoid writing assembly like ".long foo - .". */ | |
1991 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
5a15f56f | 1992 | { |
0c715baa AM |
1993 | struct elf_i386_dyn_relocs **pp; |
1994 | ||
1995 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1996 | { | |
1997 | p->count -= p->pc_count; | |
1998 | p->pc_count = 0; | |
1999 | if (p->count == 0) | |
2000 | *pp = p->next; | |
2001 | else | |
2002 | pp = &p->next; | |
2003 | } | |
5a15f56f | 2004 | } |
4e795f50 | 2005 | |
3348747a NS |
2006 | if (htab->is_vxworks) |
2007 | { | |
2008 | struct elf_i386_dyn_relocs **pp; | |
2009 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2010 | { | |
2011 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
2012 | *pp = p->next; | |
2013 | else | |
2014 | pp = &p->next; | |
2015 | } | |
2016 | } | |
2017 | ||
4e795f50 | 2018 | /* Also discard relocs on undefined weak syms with non-default |
3348747a | 2019 | visibility. */ |
22d606e9 | 2020 | if (eh->dyn_relocs != NULL |
4e795f50 | 2021 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
2022 | { |
2023 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2024 | eh->dyn_relocs = NULL; | |
2025 | ||
2026 | /* Make sure undefined weak symbols are output as a dynamic | |
2027 | symbol in PIEs. */ | |
2028 | else if (h->dynindx == -1 | |
2029 | && !h->forced_local) | |
2030 | { | |
2031 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2032 | return FALSE; | |
2033 | } | |
2034 | } | |
0c715baa | 2035 | } |
a23b6845 | 2036 | else if (ELIMINATE_COPY_RELOCS) |
0c715baa AM |
2037 | { |
2038 | /* For the non-shared case, discard space for relocs against | |
2039 | symbols which turn out to need copy relocs or are not | |
2040 | dynamic. */ | |
2041 | ||
f5385ebf AM |
2042 | if (!h->non_got_ref |
2043 | && ((h->def_dynamic | |
2044 | && !h->def_regular) | |
ebe50bae | 2045 | || (htab->elf.dynamic_sections_created |
0c715baa AM |
2046 | && (h->root.type == bfd_link_hash_undefweak |
2047 | || h->root.type == bfd_link_hash_undefined)))) | |
2048 | { | |
2049 | /* Make sure this symbol is output as a dynamic symbol. | |
2050 | Undefined weak syms won't yet be marked as dynamic. */ | |
2051 | if (h->dynindx == -1 | |
f5385ebf | 2052 | && !h->forced_local) |
0c715baa | 2053 | { |
c152c796 | 2054 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2055 | return FALSE; |
0c715baa | 2056 | } |
5a15f56f | 2057 | |
0c715baa AM |
2058 | /* If that succeeded, we know we'll be keeping all the |
2059 | relocs. */ | |
2060 | if (h->dynindx != -1) | |
2061 | goto keep; | |
2062 | } | |
2063 | ||
2064 | eh->dyn_relocs = NULL; | |
2065 | ||
ec338859 | 2066 | keep: ; |
5a15f56f AM |
2067 | } |
2068 | ||
0c715baa AM |
2069 | /* Finally, allocate space. */ |
2070 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
12d0ee4a | 2071 | { |
e7c33416 NC |
2072 | asection *sreloc; |
2073 | ||
0f88be7a | 2074 | sreloc = elf_section_data (p->sec)->sreloc; |
e7c33416 NC |
2075 | |
2076 | BFD_ASSERT (sreloc != NULL); | |
eea6121a | 2077 | sreloc->size += p->count * sizeof (Elf32_External_Rel); |
12d0ee4a AM |
2078 | } |
2079 | ||
b34976b6 | 2080 | return TRUE; |
6725bdbf AM |
2081 | } |
2082 | ||
0c715baa AM |
2083 | /* Find any dynamic relocs that apply to read-only sections. */ |
2084 | ||
b34976b6 | 2085 | static bfd_boolean |
55fd94b0 | 2086 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
0c715baa AM |
2087 | { |
2088 | struct elf_i386_link_hash_entry *eh; | |
2089 | struct elf_i386_dyn_relocs *p; | |
2090 | ||
e92d460e AM |
2091 | if (h->root.type == bfd_link_hash_warning) |
2092 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2093 | ||
0c715baa AM |
2094 | eh = (struct elf_i386_link_hash_entry *) h; |
2095 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2096 | { | |
2097 | asection *s = p->sec->output_section; | |
2098 | ||
2099 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2100 | { | |
2101 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2102 | ||
2103 | info->flags |= DF_TEXTREL; | |
2104 | ||
2105 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 2106 | return FALSE; |
0c715baa AM |
2107 | } |
2108 | } | |
b34976b6 | 2109 | return TRUE; |
0c715baa AM |
2110 | } |
2111 | ||
252b5132 RH |
2112 | /* Set the sizes of the dynamic sections. */ |
2113 | ||
b34976b6 | 2114 | static bfd_boolean |
55fd94b0 AM |
2115 | elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
2116 | struct bfd_link_info *info) | |
252b5132 | 2117 | { |
6725bdbf | 2118 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2119 | bfd *dynobj; |
2120 | asection *s; | |
b34976b6 | 2121 | bfd_boolean relocs; |
0c715baa | 2122 | bfd *ibfd; |
252b5132 | 2123 | |
6725bdbf | 2124 | htab = elf_i386_hash_table (info); |
ebe50bae | 2125 | dynobj = htab->elf.dynobj; |
ffb2e45b AM |
2126 | if (dynobj == NULL) |
2127 | abort (); | |
252b5132 | 2128 | |
ebe50bae | 2129 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2130 | { |
2131 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 2132 | if (info->executable) |
252b5132 RH |
2133 | { |
2134 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
ffb2e45b AM |
2135 | if (s == NULL) |
2136 | abort (); | |
eea6121a | 2137 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
2138 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2139 | } | |
161d71a6 | 2140 | } |
6725bdbf | 2141 | |
0c715baa AM |
2142 | /* Set up .got offsets for local syms, and space for local dynamic |
2143 | relocs. */ | |
2144 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
161d71a6 L |
2145 | { |
2146 | bfd_signed_vma *local_got; | |
2147 | bfd_signed_vma *end_local_got; | |
13ae64f3 | 2148 | char *local_tls_type; |
67a4f2b7 | 2149 | bfd_vma *local_tlsdesc_gotent; |
161d71a6 L |
2150 | bfd_size_type locsymcount; |
2151 | Elf_Internal_Shdr *symtab_hdr; | |
2152 | asection *srel; | |
6725bdbf | 2153 | |
0ffa91dd | 2154 | if (! is_i386_elf (ibfd)) |
161d71a6 | 2155 | continue; |
6725bdbf | 2156 | |
0c715baa AM |
2157 | for (s = ibfd->sections; s != NULL; s = s->next) |
2158 | { | |
ec338859 | 2159 | struct elf_i386_dyn_relocs *p; |
0c715baa | 2160 | |
e81d3500 DD |
2161 | for (p = ((struct elf_i386_dyn_relocs *) |
2162 | elf_section_data (s)->local_dynrel); | |
ec338859 AM |
2163 | p != NULL; |
2164 | p = p->next) | |
0c715baa | 2165 | { |
ec338859 AM |
2166 | if (!bfd_is_abs_section (p->sec) |
2167 | && bfd_is_abs_section (p->sec->output_section)) | |
2168 | { | |
2169 | /* Input section has been discarded, either because | |
2170 | it is a copy of a linkonce section or due to | |
2171 | linker script /DISCARD/, so we'll be discarding | |
2172 | the relocs too. */ | |
2173 | } | |
3348747a NS |
2174 | else if (htab->is_vxworks |
2175 | && strcmp (p->sec->output_section->name, | |
2176 | ".tls_vars") == 0) | |
2177 | { | |
2178 | /* Relocations in vxworks .tls_vars sections are | |
2179 | handled specially by the loader. */ | |
2180 | } | |
248866a8 | 2181 | else if (p->count != 0) |
ec338859 AM |
2182 | { |
2183 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 2184 | srel->size += p->count * sizeof (Elf32_External_Rel); |
248866a8 AM |
2185 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
2186 | info->flags |= DF_TEXTREL; | |
ec338859 | 2187 | } |
0c715baa AM |
2188 | } |
2189 | } | |
2190 | ||
2191 | local_got = elf_local_got_refcounts (ibfd); | |
161d71a6 L |
2192 | if (!local_got) |
2193 | continue; | |
6725bdbf | 2194 | |
0ffa91dd | 2195 | symtab_hdr = &elf_symtab_hdr (ibfd); |
161d71a6 L |
2196 | locsymcount = symtab_hdr->sh_info; |
2197 | end_local_got = local_got + locsymcount; | |
13ae64f3 | 2198 | local_tls_type = elf_i386_local_got_tls_type (ibfd); |
67a4f2b7 | 2199 | local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd); |
161d71a6 L |
2200 | s = htab->sgot; |
2201 | srel = htab->srelgot; | |
67a4f2b7 AO |
2202 | for (; local_got < end_local_got; |
2203 | ++local_got, ++local_tls_type, ++local_tlsdesc_gotent) | |
161d71a6 | 2204 | { |
67a4f2b7 | 2205 | *local_tlsdesc_gotent = (bfd_vma) -1; |
161d71a6 | 2206 | if (*local_got > 0) |
6725bdbf | 2207 | { |
67a4f2b7 AO |
2208 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
2209 | { | |
2210 | *local_tlsdesc_gotent = htab->sgotplt->size | |
2211 | - elf_i386_compute_jump_table_size (htab); | |
2212 | htab->sgotplt->size += 8; | |
2213 | *local_got = (bfd_vma) -2; | |
2214 | } | |
2215 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2216 | || GOT_TLS_GD_P (*local_tls_type)) | |
2217 | { | |
2218 | *local_got = s->size; | |
2219 | s->size += 4; | |
2220 | if (GOT_TLS_GD_P (*local_tls_type) | |
2221 | || *local_tls_type == GOT_TLS_IE_BOTH) | |
2222 | s->size += 4; | |
2223 | } | |
13ae64f3 | 2224 | if (info->shared |
67a4f2b7 | 2225 | || GOT_TLS_GD_ANY_P (*local_tls_type) |
37e55690 JJ |
2226 | || (*local_tls_type & GOT_TLS_IE)) |
2227 | { | |
2228 | if (*local_tls_type == GOT_TLS_IE_BOTH) | |
eea6121a | 2229 | srel->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2230 | else if (GOT_TLS_GD_P (*local_tls_type) |
2231 | || ! GOT_TLS_GDESC_P (*local_tls_type)) | |
eea6121a | 2232 | srel->size += sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2233 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
2234 | htab->srelplt->size += sizeof (Elf32_External_Rel); | |
37e55690 | 2235 | } |
6725bdbf | 2236 | } |
161d71a6 L |
2237 | else |
2238 | *local_got = (bfd_vma) -1; | |
6725bdbf | 2239 | } |
252b5132 | 2240 | } |
6725bdbf | 2241 | |
13ae64f3 JJ |
2242 | if (htab->tls_ldm_got.refcount > 0) |
2243 | { | |
2244 | /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM | |
2245 | relocs. */ | |
eea6121a AM |
2246 | htab->tls_ldm_got.offset = htab->sgot->size; |
2247 | htab->sgot->size += 8; | |
2248 | htab->srelgot->size += sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2249 | } |
2250 | else | |
2251 | htab->tls_ldm_got.offset = -1; | |
2252 | ||
0c715baa AM |
2253 | /* Allocate global sym .plt and .got entries, and space for global |
2254 | sym dynamic relocs. */ | |
e7c33416 | 2255 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
252b5132 | 2256 | |
67a4f2b7 AO |
2257 | /* For every jump slot reserved in the sgotplt, reloc_count is |
2258 | incremented. However, when we reserve space for TLS descriptors, | |
2259 | it's not incremented, so in order to compute the space reserved | |
2260 | for them, it suffices to multiply the reloc count by the jump | |
2261 | slot size. */ | |
2262 | if (htab->srelplt) | |
5ae0bfb6 | 2263 | htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4; |
67a4f2b7 | 2264 | |
5a15f56f AM |
2265 | /* We now have determined the sizes of the various dynamic sections. |
2266 | Allocate memory for them. */ | |
b34976b6 | 2267 | relocs = FALSE; |
252b5132 RH |
2268 | for (s = dynobj->sections; s != NULL; s = s->next) |
2269 | { | |
eac338cf PB |
2270 | bfd_boolean strip_section = TRUE; |
2271 | ||
252b5132 RH |
2272 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
2273 | continue; | |
2274 | ||
6725bdbf AM |
2275 | if (s == htab->splt |
2276 | || s == htab->sgot | |
75ff4589 L |
2277 | || s == htab->sgotplt |
2278 | || s == htab->sdynbss) | |
252b5132 | 2279 | { |
6725bdbf AM |
2280 | /* Strip this section if we don't need it; see the |
2281 | comment below. */ | |
eac338cf PB |
2282 | /* We'd like to strip these sections if they aren't needed, but if |
2283 | we've exported dynamic symbols from them we must leave them. | |
2284 | It's too late to tell BFD to get rid of the symbols. */ | |
2285 | ||
7325306f | 2286 | if (htab->elf.hplt != NULL) |
eac338cf | 2287 | strip_section = FALSE; |
252b5132 | 2288 | } |
0112cd26 | 2289 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel")) |
252b5132 | 2290 | { |
eac338cf | 2291 | if (s->size != 0 && s != htab->srelplt && s != htab->srelplt2) |
b34976b6 | 2292 | relocs = TRUE; |
252b5132 | 2293 | |
0ac8d2ca AM |
2294 | /* We use the reloc_count field as a counter if we need |
2295 | to copy relocs into the output file. */ | |
5ae0bfb6 | 2296 | s->reloc_count = 0; |
252b5132 | 2297 | } |
6725bdbf | 2298 | else |
252b5132 RH |
2299 | { |
2300 | /* It's not one of our sections, so don't allocate space. */ | |
2301 | continue; | |
2302 | } | |
2303 | ||
c456f082 | 2304 | if (s->size == 0) |
252b5132 | 2305 | { |
0ac8d2ca AM |
2306 | /* If we don't need this section, strip it from the |
2307 | output file. This is mostly to handle .rel.bss and | |
2308 | .rel.plt. We must create both sections in | |
2309 | create_dynamic_sections, because they must be created | |
2310 | before the linker maps input sections to output | |
2311 | sections. The linker does that before | |
2312 | adjust_dynamic_symbol is called, and it is that | |
2313 | function which decides whether anything needs to go | |
2314 | into these sections. */ | |
c456f082 AM |
2315 | if (strip_section) |
2316 | s->flags |= SEC_EXCLUDE; | |
252b5132 RH |
2317 | continue; |
2318 | } | |
2319 | ||
c456f082 AM |
2320 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2321 | continue; | |
2322 | ||
f69da49f AM |
2323 | /* Allocate memory for the section contents. We use bfd_zalloc |
2324 | here in case unused entries are not reclaimed before the | |
2325 | section's contents are written out. This should not happen, | |
2326 | but this way if it does, we get a R_386_NONE reloc instead | |
2327 | of garbage. */ | |
eea6121a | 2328 | s->contents = bfd_zalloc (dynobj, s->size); |
6725bdbf | 2329 | if (s->contents == NULL) |
b34976b6 | 2330 | return FALSE; |
252b5132 RH |
2331 | } |
2332 | ||
ebe50bae | 2333 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2334 | { |
2335 | /* Add some entries to the .dynamic section. We fill in the | |
2336 | values later, in elf_i386_finish_dynamic_sections, but we | |
2337 | must add the entries now so that we get the correct size for | |
2338 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2339 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2340 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2341 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2342 | |
36af4a4e | 2343 | if (info->executable) |
252b5132 | 2344 | { |
dc810e39 | 2345 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2346 | return FALSE; |
252b5132 RH |
2347 | } |
2348 | ||
eea6121a | 2349 | if (htab->splt->size != 0) |
252b5132 | 2350 | { |
dc810e39 AM |
2351 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2352 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2353 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
2354 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2355 | return FALSE; |
252b5132 RH |
2356 | } |
2357 | ||
2358 | if (relocs) | |
2359 | { | |
dc810e39 AM |
2360 | if (!add_dynamic_entry (DT_REL, 0) |
2361 | || !add_dynamic_entry (DT_RELSZ, 0) | |
2362 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 2363 | return FALSE; |
252b5132 | 2364 | |
0c715baa AM |
2365 | /* If any dynamic relocs apply to a read-only section, |
2366 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 2367 | if ((info->flags & DF_TEXTREL) == 0) |
e7c33416 | 2368 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
0c715baa AM |
2369 | |
2370 | if ((info->flags & DF_TEXTREL) != 0) | |
2371 | { | |
2372 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2373 | return FALSE; |
0c715baa | 2374 | } |
252b5132 | 2375 | } |
7a2b07ff NS |
2376 | if (htab->is_vxworks |
2377 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
2378 | return FALSE; | |
252b5132 | 2379 | } |
dc810e39 | 2380 | #undef add_dynamic_entry |
252b5132 | 2381 | |
b34976b6 | 2382 | return TRUE; |
252b5132 RH |
2383 | } |
2384 | ||
67a4f2b7 AO |
2385 | static bfd_boolean |
2386 | elf_i386_always_size_sections (bfd *output_bfd, | |
2387 | struct bfd_link_info *info) | |
2388 | { | |
2389 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
2390 | ||
2391 | if (tls_sec) | |
2392 | { | |
2393 | struct elf_link_hash_entry *tlsbase; | |
2394 | ||
2395 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
2396 | "_TLS_MODULE_BASE_", | |
2397 | FALSE, FALSE, FALSE); | |
2398 | ||
2399 | if (tlsbase && tlsbase->type == STT_TLS) | |
2400 | { | |
2401 | struct bfd_link_hash_entry *bh = NULL; | |
2402 | const struct elf_backend_data *bed | |
2403 | = get_elf_backend_data (output_bfd); | |
2404 | ||
2405 | if (!(_bfd_generic_link_add_one_symbol | |
2406 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
2407 | tls_sec, 0, NULL, FALSE, | |
2408 | bed->collect, &bh))) | |
2409 | return FALSE; | |
9f03412a AO |
2410 | |
2411 | elf_i386_hash_table (info)->tls_module_base = bh; | |
2412 | ||
67a4f2b7 AO |
2413 | tlsbase = (struct elf_link_hash_entry *)bh; |
2414 | tlsbase->def_regular = 1; | |
2415 | tlsbase->other = STV_HIDDEN; | |
2416 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
2417 | } | |
2418 | } | |
2419 | ||
2420 | return TRUE; | |
2421 | } | |
2422 | ||
38701953 AM |
2423 | /* Set the correct type for an x86 ELF section. We do this by the |
2424 | section name, which is a hack, but ought to work. */ | |
2425 | ||
b34976b6 | 2426 | static bfd_boolean |
55fd94b0 AM |
2427 | elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
2428 | Elf_Internal_Shdr *hdr, | |
2429 | asection *sec) | |
38701953 AM |
2430 | { |
2431 | register const char *name; | |
2432 | ||
2433 | name = bfd_get_section_name (abfd, sec); | |
2434 | ||
2435 | /* This is an ugly, but unfortunately necessary hack that is | |
2436 | needed when producing EFI binaries on x86. It tells | |
2437 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
2438 | containing ELF relocation info. We need this hack in order to | |
2439 | be able to generate ELF binaries that can be translated into | |
2440 | EFI applications (which are essentially COFF objects). Those | |
2441 | files contain a COFF ".reloc" section inside an ELFNN object, | |
2442 | which would normally cause BFD to segfault because it would | |
2443 | attempt to interpret this section as containing relocation | |
2444 | entries for section "oc". With this hack enabled, ".reloc" | |
2445 | will be treated as a normal data section, which will avoid the | |
2446 | segfault. However, you won't be able to create an ELFNN binary | |
2447 | with a section named "oc" that needs relocations, but that's | |
2448 | the kind of ugly side-effects you get when detecting section | |
2449 | types based on their names... In practice, this limitation is | |
2450 | unlikely to bite. */ | |
2451 | if (strcmp (name, ".reloc") == 0) | |
2452 | hdr->sh_type = SHT_PROGBITS; | |
2453 | ||
b34976b6 | 2454 | return TRUE; |
38701953 AM |
2455 | } |
2456 | ||
9f03412a AO |
2457 | /* _TLS_MODULE_BASE_ needs to be treated especially when linking |
2458 | executables. Rather than setting it to the beginning of the TLS | |
2459 | section, we have to set it to the end. This function may be called | |
2460 | multiple times, it is idempotent. */ | |
2461 | ||
2462 | static void | |
2463 | set_tls_module_base (struct bfd_link_info *info) | |
2464 | { | |
2465 | struct bfd_link_hash_entry *base; | |
2466 | ||
2467 | if (!info->executable) | |
2468 | return; | |
2469 | ||
2470 | base = elf_i386_hash_table (info)->tls_module_base; | |
2471 | ||
2472 | if (!base) | |
2473 | return; | |
2474 | ||
2475 | base->u.def.value = elf_hash_table (info)->tls_size; | |
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 | |
9f03412a AO |
2539 | set_tls_module_base (info); |
2540 | ||
252b5132 RH |
2541 | rel = relocs; |
2542 | relend = relocs + input_section->reloc_count; | |
2543 | for (; rel < relend; rel++) | |
2544 | { | |
13ae64f3 | 2545 | unsigned int r_type; |
252b5132 RH |
2546 | reloc_howto_type *howto; |
2547 | unsigned long r_symndx; | |
2548 | struct elf_link_hash_entry *h; | |
2549 | Elf_Internal_Sym *sym; | |
2550 | asection *sec; | |
67a4f2b7 | 2551 | bfd_vma off, offplt; |
252b5132 | 2552 | bfd_vma relocation; |
b34976b6 | 2553 | bfd_boolean unresolved_reloc; |
252b5132 | 2554 | bfd_reloc_status_type r; |
1b452ec6 | 2555 | unsigned int indx; |
13ae64f3 | 2556 | int tls_type; |
252b5132 RH |
2557 | |
2558 | r_type = ELF32_R_TYPE (rel->r_info); | |
55fd94b0 AM |
2559 | if (r_type == R_386_GNU_VTINHERIT |
2560 | || r_type == R_386_GNU_VTENTRY) | |
252b5132 | 2561 | continue; |
dc47f327 | 2562 | |
55fd94b0 | 2563 | if ((indx = r_type) >= R_386_standard |
13ae64f3 JJ |
2564 | && ((indx = r_type - R_386_ext_offset) - R_386_standard |
2565 | >= R_386_ext - R_386_standard) | |
2566 | && ((indx = r_type - R_386_tls_offset) - R_386_ext | |
2567 | >= R_386_tls - R_386_ext)) | |
252b5132 | 2568 | { |
6ba842b6 | 2569 | (*_bfd_error_handler) |
d003868e AM |
2570 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), |
2571 | input_bfd, input_section, r_type); | |
252b5132 | 2572 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 2573 | return FALSE; |
252b5132 | 2574 | } |
1b452ec6 | 2575 | howto = elf_howto_table + indx; |
252b5132 RH |
2576 | |
2577 | r_symndx = ELF32_R_SYM (rel->r_info); | |
252b5132 RH |
2578 | h = NULL; |
2579 | sym = NULL; | |
2580 | sec = NULL; | |
b34976b6 | 2581 | unresolved_reloc = FALSE; |
252b5132 RH |
2582 | if (r_symndx < symtab_hdr->sh_info) |
2583 | { | |
2584 | sym = local_syms + r_symndx; | |
2585 | sec = local_sections[r_symndx]; | |
2586 | relocation = (sec->output_section->vma | |
2587 | + sec->output_offset | |
2588 | + sym->st_value); | |
ab96bf03 AM |
2589 | |
2590 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
2591 | && ((sec->flags & SEC_MERGE) != 0 | |
2592 | || (info->relocatable | |
2593 | && sec->output_offset != 0))) | |
f8df10f4 | 2594 | { |
f8df10f4 | 2595 | bfd_vma addend; |
4a335f3d | 2596 | bfd_byte *where = contents + rel->r_offset; |
f8df10f4 | 2597 | |
4a335f3d | 2598 | switch (howto->size) |
f8df10f4 | 2599 | { |
4a335f3d AM |
2600 | case 0: |
2601 | addend = bfd_get_8 (input_bfd, where); | |
2602 | if (howto->pc_relative) | |
2603 | { | |
2604 | addend = (addend ^ 0x80) - 0x80; | |
2605 | addend += 1; | |
2606 | } | |
2607 | break; | |
2608 | case 1: | |
2609 | addend = bfd_get_16 (input_bfd, where); | |
2610 | if (howto->pc_relative) | |
2611 | { | |
2612 | addend = (addend ^ 0x8000) - 0x8000; | |
2613 | addend += 2; | |
2614 | } | |
2615 | break; | |
2616 | case 2: | |
2617 | addend = bfd_get_32 (input_bfd, where); | |
2618 | if (howto->pc_relative) | |
2619 | { | |
2620 | addend = (addend ^ 0x80000000) - 0x80000000; | |
2621 | addend += 4; | |
2622 | } | |
2623 | break; | |
2624 | default: | |
2625 | abort (); | |
f8df10f4 JJ |
2626 | } |
2627 | ||
ab96bf03 AM |
2628 | if (info->relocatable) |
2629 | addend += sec->output_offset; | |
2630 | else | |
2631 | { | |
2632 | asection *msec = sec; | |
2633 | addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, | |
2634 | addend); | |
2635 | addend -= relocation; | |
2636 | addend += msec->output_section->vma + msec->output_offset; | |
2637 | } | |
4a335f3d AM |
2638 | |
2639 | switch (howto->size) | |
2640 | { | |
2641 | case 0: | |
16a10388 | 2642 | /* FIXME: overflow checks. */ |
4a335f3d AM |
2643 | if (howto->pc_relative) |
2644 | addend -= 1; | |
2645 | bfd_put_8 (input_bfd, addend, where); | |
4a335f3d AM |
2646 | break; |
2647 | case 1: | |
2648 | if (howto->pc_relative) | |
2649 | addend -= 2; | |
2650 | bfd_put_16 (input_bfd, addend, where); | |
4a335f3d AM |
2651 | break; |
2652 | case 2: | |
2653 | if (howto->pc_relative) | |
2654 | addend -= 4; | |
2655 | bfd_put_32 (input_bfd, addend, where); | |
2656 | break; | |
2657 | } | |
f8df10f4 | 2658 | } |
252b5132 RH |
2659 | } |
2660 | else | |
2661 | { | |
560e09e9 | 2662 | bfd_boolean warned; |
ffb2e45b | 2663 | |
b2a8e766 AM |
2664 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2665 | r_symndx, symtab_hdr, sym_hashes, | |
2666 | h, sec, relocation, | |
2667 | unresolved_reloc, warned); | |
252b5132 RH |
2668 | } |
2669 | ||
ab96bf03 | 2670 | if (sec != NULL && elf_discarded_section (sec)) |
9635fe29 | 2671 | { |
ab96bf03 AM |
2672 | /* For relocs against symbols from removed linkonce sections, |
2673 | or sections discarded by a linker script, we just want the | |
2674 | section contents zeroed. Avoid any special processing. */ | |
b1e24c02 | 2675 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); |
ab96bf03 AM |
2676 | rel->r_info = 0; |
2677 | rel->r_addend = 0; | |
b1e24c02 | 2678 | continue; |
9635fe29 AM |
2679 | } |
2680 | ||
ab96bf03 AM |
2681 | if (info->relocatable) |
2682 | continue; | |
2683 | ||
252b5132 RH |
2684 | switch (r_type) |
2685 | { | |
2686 | case R_386_GOT32: | |
2687 | /* Relocation is to the entry for this symbol in the global | |
2688 | offset table. */ | |
ffb2e45b AM |
2689 | if (htab->sgot == NULL) |
2690 | abort (); | |
252b5132 RH |
2691 | |
2692 | if (h != NULL) | |
2693 | { | |
b34976b6 | 2694 | bfd_boolean dyn; |
252b5132 RH |
2695 | |
2696 | off = h->got.offset; | |
ebe50bae | 2697 | dyn = htab->elf.dynamic_sections_created; |
26e41594 | 2698 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
252b5132 | 2699 | || (info->shared |
586119b3 | 2700 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
ef5aade5 L |
2701 | || (ELF_ST_VISIBILITY (h->other) |
2702 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
2703 | { |
2704 | /* This is actually a static link, or it is a | |
2705 | -Bsymbolic link and the symbol is defined | |
2706 | locally, or the symbol was forced to be local | |
2707 | because of a version file. We must initialize | |
2708 | this entry in the global offset table. Since the | |
2709 | offset must always be a multiple of 4, we use the | |
2710 | least significant bit to record whether we have | |
2711 | initialized it already. | |
2712 | ||
2713 | When doing a dynamic link, we create a .rel.got | |
2714 | relocation entry to initialize the value. This | |
2715 | is done in the finish_dynamic_symbol routine. */ | |
2716 | if ((off & 1) != 0) | |
2717 | off &= ~1; | |
2718 | else | |
2719 | { | |
2720 | bfd_put_32 (output_bfd, relocation, | |
6725bdbf | 2721 | htab->sgot->contents + off); |
252b5132 RH |
2722 | h->got.offset |= 1; |
2723 | } | |
2724 | } | |
8c694914 | 2725 | else |
b34976b6 | 2726 | unresolved_reloc = FALSE; |
252b5132 RH |
2727 | } |
2728 | else | |
2729 | { | |
ffb2e45b AM |
2730 | if (local_got_offsets == NULL) |
2731 | abort (); | |
252b5132 RH |
2732 | |
2733 | off = local_got_offsets[r_symndx]; | |
2734 | ||
2735 | /* The offset must always be a multiple of 4. We use | |
83be169b AM |
2736 | the least significant bit to record whether we have |
2737 | already generated the necessary reloc. */ | |
252b5132 RH |
2738 | if ((off & 1) != 0) |
2739 | off &= ~1; | |
2740 | else | |
2741 | { | |
6725bdbf AM |
2742 | bfd_put_32 (output_bfd, relocation, |
2743 | htab->sgot->contents + off); | |
252b5132 RH |
2744 | |
2745 | if (info->shared) | |
2746 | { | |
947216bf AM |
2747 | asection *s; |
2748 | Elf_Internal_Rela outrel; | |
2749 | bfd_byte *loc; | |
252b5132 | 2750 | |
947216bf AM |
2751 | s = htab->srelgot; |
2752 | if (s == NULL) | |
ffb2e45b | 2753 | abort (); |
252b5132 | 2754 | |
6725bdbf AM |
2755 | outrel.r_offset = (htab->sgot->output_section->vma |
2756 | + htab->sgot->output_offset | |
252b5132 RH |
2757 | + off); |
2758 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
947216bf AM |
2759 | loc = s->contents; |
2760 | loc += s->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 2761 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2762 | } |
2763 | ||
2764 | local_got_offsets[r_symndx] |= 1; | |
2765 | } | |
252b5132 RH |
2766 | } |
2767 | ||
ffb2e45b AM |
2768 | if (off >= (bfd_vma) -2) |
2769 | abort (); | |
2770 | ||
8c37241b JJ |
2771 | relocation = htab->sgot->output_section->vma |
2772 | + htab->sgot->output_offset + off | |
2773 | - htab->sgotplt->output_section->vma | |
2774 | - htab->sgotplt->output_offset; | |
252b5132 RH |
2775 | break; |
2776 | ||
2777 | case R_386_GOTOFF: | |
2778 | /* Relocation is relative to the start of the global offset | |
2779 | table. */ | |
2780 | ||
90f487df L |
2781 | /* Check to make sure it isn't a protected function symbol |
2782 | for shared library since it may not be local when used | |
41bed6dd L |
2783 | as function address. We also need to make sure that a |
2784 | symbol is defined locally. */ | |
2785 | if (info->shared && h) | |
90f487df | 2786 | { |
41bed6dd L |
2787 | if (!h->def_regular) |
2788 | { | |
2789 | const char *v; | |
2790 | ||
2791 | switch (ELF_ST_VISIBILITY (h->other)) | |
2792 | { | |
2793 | case STV_HIDDEN: | |
2794 | v = _("hidden symbol"); | |
2795 | break; | |
2796 | case STV_INTERNAL: | |
2797 | v = _("internal symbol"); | |
2798 | break; | |
2799 | case STV_PROTECTED: | |
2800 | v = _("protected symbol"); | |
2801 | break; | |
2802 | default: | |
2803 | v = _("symbol"); | |
2804 | break; | |
2805 | } | |
2806 | ||
2807 | (*_bfd_error_handler) | |
2808 | (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"), | |
2809 | input_bfd, v, h->root.root.string); | |
2810 | bfd_set_error (bfd_error_bad_value); | |
2811 | return FALSE; | |
2812 | } | |
2813 | else if (!info->executable | |
2814 | && h->type == STT_FUNC | |
2815 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
2816 | { | |
2817 | (*_bfd_error_handler) | |
2818 | (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"), | |
2819 | input_bfd, h->root.root.string); | |
2820 | bfd_set_error (bfd_error_bad_value); | |
2821 | return FALSE; | |
2822 | } | |
90f487df L |
2823 | } |
2824 | ||
8c37241b JJ |
2825 | /* Note that sgot is not involved in this |
2826 | calculation. We always want the start of .got.plt. If we | |
2827 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
252b5132 RH |
2828 | permitted by the ABI, we might have to change this |
2829 | calculation. */ | |
8c37241b JJ |
2830 | relocation -= htab->sgotplt->output_section->vma |
2831 | + htab->sgotplt->output_offset; | |
252b5132 RH |
2832 | break; |
2833 | ||
2834 | case R_386_GOTPC: | |
2835 | /* Use global offset table as symbol value. */ | |
8c37241b JJ |
2836 | relocation = htab->sgotplt->output_section->vma |
2837 | + htab->sgotplt->output_offset; | |
b34976b6 | 2838 | unresolved_reloc = FALSE; |
252b5132 RH |
2839 | break; |
2840 | ||
2841 | case R_386_PLT32: | |
2842 | /* Relocation is to the entry for this symbol in the | |
2843 | procedure linkage table. */ | |
2844 | ||
dd5724d5 | 2845 | /* Resolve a PLT32 reloc against a local symbol directly, |
83be169b | 2846 | without using the procedure linkage table. */ |
252b5132 RH |
2847 | if (h == NULL) |
2848 | break; | |
2849 | ||
dd5724d5 | 2850 | if (h->plt.offset == (bfd_vma) -1 |
6725bdbf | 2851 | || htab->splt == NULL) |
252b5132 RH |
2852 | { |
2853 | /* We didn't make a PLT entry for this symbol. This | |
83be169b AM |
2854 | happens when statically linking PIC code, or when |
2855 | using -Bsymbolic. */ | |
252b5132 RH |
2856 | break; |
2857 | } | |
2858 | ||
6725bdbf AM |
2859 | relocation = (htab->splt->output_section->vma |
2860 | + htab->splt->output_offset | |
252b5132 | 2861 | + h->plt.offset); |
b34976b6 | 2862 | unresolved_reloc = FALSE; |
252b5132 RH |
2863 | break; |
2864 | ||
2865 | case R_386_32: | |
2866 | case R_386_PC32: | |
3348747a NS |
2867 | if ((input_section->flags & SEC_ALLOC) == 0 |
2868 | || is_vxworks_tls) | |
ec338859 AM |
2869 | break; |
2870 | ||
12d0ee4a | 2871 | if ((info->shared |
ef5aade5 L |
2872 | && (h == NULL |
2873 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2874 | || h->root.type != bfd_link_hash_undefweak) | |
12d0ee4a | 2875 | && (r_type != R_386_PC32 |
f6c52c13 | 2876 | || !SYMBOL_CALLS_LOCAL (info, h))) |
a23b6845 AM |
2877 | || (ELIMINATE_COPY_RELOCS |
2878 | && !info->shared | |
12d0ee4a AM |
2879 | && h != NULL |
2880 | && h->dynindx != -1 | |
f5385ebf AM |
2881 | && !h->non_got_ref |
2882 | && ((h->def_dynamic | |
2883 | && !h->def_regular) | |
28d0b90e | 2884 | || h->root.type == bfd_link_hash_undefweak |
0f88be7a | 2885 | || h->root.type == bfd_link_hash_undefined))) |
252b5132 | 2886 | { |
947216bf AM |
2887 | Elf_Internal_Rela outrel; |
2888 | bfd_byte *loc; | |
b34976b6 | 2889 | bfd_boolean skip, relocate; |
0c715baa | 2890 | asection *sreloc; |
252b5132 RH |
2891 | |
2892 | /* When generating a shared object, these relocations | |
2893 | are copied into the output file to be resolved at run | |
2894 | time. */ | |
2895 | ||
b34976b6 AM |
2896 | skip = FALSE; |
2897 | relocate = FALSE; | |
252b5132 | 2898 | |
c629eae0 JJ |
2899 | outrel.r_offset = |
2900 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2901 | rel->r_offset); | |
2902 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2903 | skip = TRUE; |
0bb2d96a | 2904 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2905 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
2906 | outrel.r_offset += (input_section->output_section->vma |
2907 | + input_section->output_offset); | |
2908 | ||
2909 | if (skip) | |
0bb2d96a | 2910 | memset (&outrel, 0, sizeof outrel); |
5a15f56f AM |
2911 | else if (h != NULL |
2912 | && h->dynindx != -1 | |
2913 | && (r_type == R_386_PC32 | |
2914 | || !info->shared | |
55255dae | 2915 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 2916 | || !h->def_regular)) |
0bb2d96a | 2917 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
2918 | else |
2919 | { | |
5a15f56f | 2920 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 2921 | relocate = TRUE; |
5a15f56f | 2922 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
252b5132 RH |
2923 | } |
2924 | ||
0f88be7a | 2925 | sreloc = elf_section_data (input_section)->sreloc; |
e7c33416 NC |
2926 | |
2927 | BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL); | |
0c715baa | 2928 | |
947216bf AM |
2929 | loc = sreloc->contents; |
2930 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
e7c33416 | 2931 | |
0c715baa | 2932 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
2933 | |
2934 | /* If this reloc is against an external symbol, we do | |
2935 | not want to fiddle with the addend. Otherwise, we | |
2936 | need to include the symbol value so that it becomes | |
2937 | an addend for the dynamic reloc. */ | |
0f88be7a | 2938 | if (! relocate) |
252b5132 RH |
2939 | continue; |
2940 | } | |
252b5132 RH |
2941 | break; |
2942 | ||
37e55690 JJ |
2943 | case R_386_TLS_IE: |
2944 | if (info->shared) | |
2945 | { | |
947216bf AM |
2946 | Elf_Internal_Rela outrel; |
2947 | bfd_byte *loc; | |
37e55690 | 2948 | asection *sreloc; |
37e55690 JJ |
2949 | |
2950 | outrel.r_offset = rel->r_offset | |
2951 | + input_section->output_section->vma | |
2952 | + input_section->output_offset; | |
2953 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
2954 | sreloc = elf_section_data (input_section)->sreloc; | |
2955 | if (sreloc == NULL) | |
2956 | abort (); | |
947216bf AM |
2957 | loc = sreloc->contents; |
2958 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
2959 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
2960 | } | |
2961 | /* Fall through */ | |
2962 | ||
13ae64f3 | 2963 | case R_386_TLS_GD: |
67a4f2b7 AO |
2964 | case R_386_TLS_GOTDESC: |
2965 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 2966 | case R_386_TLS_IE_32: |
37e55690 | 2967 | case R_386_TLS_GOTIE: |
13ae64f3 JJ |
2968 | tls_type = GOT_UNKNOWN; |
2969 | if (h == NULL && local_got_offsets) | |
2970 | tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx]; | |
2971 | else if (h != NULL) | |
142411ca | 2972 | tls_type = elf_i386_hash_entry(h)->tls_type; |
37e55690 JJ |
2973 | if (tls_type == GOT_TLS_IE) |
2974 | tls_type = GOT_TLS_IE_NEG; | |
142411ca L |
2975 | |
2976 | if (! elf_i386_tls_transition (info, input_bfd, | |
2977 | input_section, contents, | |
2978 | symtab_hdr, sym_hashes, | |
2979 | &r_type, tls_type, rel, | |
2980 | relend, h)) | |
2981 | return FALSE; | |
13ae64f3 JJ |
2982 | |
2983 | if (r_type == R_386_TLS_LE_32) | |
2984 | { | |
82e51918 | 2985 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
2986 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
2987 | { | |
142411ca | 2988 | unsigned int type; |
13ae64f3 JJ |
2989 | bfd_vma roff; |
2990 | ||
2991 | /* GD->LE transition. */ | |
13ae64f3 | 2992 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
2993 | if (type == 0x04) |
2994 | { | |
2995 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
2996 | Change it into: | |
2997 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
2998 | (6 byte form of subl). */ | |
13ae64f3 JJ |
2999 | memcpy (contents + rel->r_offset - 3, |
3000 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
142411ca | 3001 | roff = rel->r_offset + 5; |
13ae64f3 JJ |
3002 | } |
3003 | else | |
3004 | { | |
142411ca L |
3005 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop |
3006 | Change it into: | |
3007 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
3008 | (6 byte form of subl). */ | |
3009 | memcpy (contents + rel->r_offset - 2, | |
3010 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
3011 | roff = rel->r_offset + 6; | |
13ae64f3 JJ |
3012 | } |
3013 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
3014 | contents + roff); | |
a3fadc9a | 3015 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
3016 | rel++; |
3017 | continue; | |
3018 | } | |
67a4f2b7 AO |
3019 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
3020 | { | |
3021 | /* GDesc -> LE transition. | |
3022 | It's originally something like: | |
3023 | leal x@tlsdesc(%ebx), %eax | |
3024 | ||
3025 | leal x@ntpoff, %eax | |
3026 | ||
3027 | Registers other than %eax may be set up here. */ | |
3028 | ||
142411ca | 3029 | unsigned int val; |
67a4f2b7 AO |
3030 | bfd_vma roff; |
3031 | ||
67a4f2b7 | 3032 | roff = rel->r_offset; |
67a4f2b7 | 3033 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
3034 | |
3035 | /* Now modify the instruction as appropriate. */ | |
3036 | /* aoliva FIXME: remove the above and xor the byte | |
3037 | below with 0x86. */ | |
3038 | bfd_put_8 (output_bfd, val ^ 0x86, | |
3039 | contents + roff - 1); | |
3040 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
3041 | contents + roff); | |
3042 | continue; | |
3043 | } | |
3044 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
3045 | { | |
3046 | /* GDesc -> LE transition. | |
3047 | It's originally: | |
3048 | call *(%eax) | |
3049 | Turn it into: | |
142411ca | 3050 | xchg %ax,%ax */ |
67a4f2b7 | 3051 | |
67a4f2b7 | 3052 | bfd_vma roff; |
142411ca | 3053 | |
67a4f2b7 | 3054 | roff = rel->r_offset; |
10efb593 | 3055 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
3056 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3057 | continue; | |
3058 | } | |
37e55690 | 3059 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE) |
13ae64f3 | 3060 | { |
142411ca | 3061 | unsigned int val; |
13ae64f3 JJ |
3062 | |
3063 | /* IE->LE transition: | |
37e55690 JJ |
3064 | Originally it can be one of: |
3065 | movl foo, %eax | |
3066 | movl foo, %reg | |
3067 | addl foo, %reg | |
3068 | We change it into: | |
3069 | movl $foo, %eax | |
3070 | movl $foo, %reg | |
3071 | addl $foo, %reg. */ | |
37e55690 | 3072 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
37e55690 JJ |
3073 | if (val == 0xa1) |
3074 | { | |
3075 | /* movl foo, %eax. */ | |
55fd94b0 AM |
3076 | bfd_put_8 (output_bfd, 0xb8, |
3077 | contents + rel->r_offset - 1); | |
37e55690 | 3078 | } |
299bf759 | 3079 | else |
37e55690 | 3080 | { |
142411ca L |
3081 | unsigned int type; |
3082 | ||
55fd94b0 AM |
3083 | type = bfd_get_8 (input_bfd, |
3084 | contents + rel->r_offset - 2); | |
299bf759 | 3085 | switch (type) |
26e41594 | 3086 | { |
299bf759 L |
3087 | case 0x8b: |
3088 | /* movl */ | |
299bf759 L |
3089 | bfd_put_8 (output_bfd, 0xc7, |
3090 | contents + rel->r_offset - 2); | |
3091 | bfd_put_8 (output_bfd, | |
3092 | 0xc0 | ((val >> 3) & 7), | |
3093 | contents + rel->r_offset - 1); | |
3094 | break; | |
3095 | case 0x03: | |
3096 | /* addl */ | |
299bf759 L |
3097 | bfd_put_8 (output_bfd, 0x81, |
3098 | contents + rel->r_offset - 2); | |
3099 | bfd_put_8 (output_bfd, | |
3100 | 0xc0 | ((val >> 3) & 7), | |
3101 | contents + rel->r_offset - 1); | |
3102 | break; | |
3103 | default: | |
3104 | BFD_FAIL (); | |
3105 | break; | |
26e41594 | 3106 | } |
37e55690 | 3107 | } |
37e55690 JJ |
3108 | bfd_put_32 (output_bfd, -tpoff (info, relocation), |
3109 | contents + rel->r_offset); | |
3110 | continue; | |
3111 | } | |
3112 | else | |
3113 | { | |
3114 | unsigned int val, type; | |
3115 | ||
3116 | /* {IE_32,GOTIE}->LE transition: | |
3117 | Originally it can be one of: | |
13ae64f3 | 3118 | subl foo(%reg1), %reg2 |
13ae64f3 | 3119 | movl foo(%reg1), %reg2 |
37e55690 | 3120 | addl foo(%reg1), %reg2 |
13ae64f3 JJ |
3121 | We change it into: |
3122 | subl $foo, %reg2 | |
37e55690 JJ |
3123 | movl $foo, %reg2 (6 byte form) |
3124 | addl $foo, %reg2. */ | |
13ae64f3 JJ |
3125 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
3126 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
13ae64f3 JJ |
3127 | if (type == 0x8b) |
3128 | { | |
3129 | /* movl */ | |
13ae64f3 JJ |
3130 | bfd_put_8 (output_bfd, 0xc7, |
3131 | contents + rel->r_offset - 2); | |
3132 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3133 | contents + rel->r_offset - 1); | |
3134 | } | |
3135 | else if (type == 0x2b) | |
3136 | { | |
3137 | /* subl */ | |
13ae64f3 JJ |
3138 | bfd_put_8 (output_bfd, 0x81, |
3139 | contents + rel->r_offset - 2); | |
3140 | bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), | |
3141 | contents + rel->r_offset - 1); | |
3142 | } | |
37e55690 JJ |
3143 | else if (type == 0x03) |
3144 | { | |
3145 | /* addl */ | |
3146 | bfd_put_8 (output_bfd, 0x81, | |
3147 | contents + rel->r_offset - 2); | |
3148 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3149 | contents + rel->r_offset - 1); | |
3150 | } | |
13ae64f3 JJ |
3151 | else |
3152 | BFD_FAIL (); | |
37e55690 JJ |
3153 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE) |
3154 | bfd_put_32 (output_bfd, -tpoff (info, relocation), | |
3155 | contents + rel->r_offset); | |
3156 | else | |
3157 | bfd_put_32 (output_bfd, tpoff (info, relocation), | |
3158 | contents + rel->r_offset); | |
13ae64f3 JJ |
3159 | continue; |
3160 | } | |
3161 | } | |
3162 | ||
3163 | if (htab->sgot == NULL) | |
3164 | abort (); | |
3165 | ||
3166 | if (h != NULL) | |
67a4f2b7 AO |
3167 | { |
3168 | off = h->got.offset; | |
3169 | offplt = elf_i386_hash_entry (h)->tlsdesc_got; | |
3170 | } | |
13ae64f3 JJ |
3171 | else |
3172 | { | |
3173 | if (local_got_offsets == NULL) | |
3174 | abort (); | |
3175 | ||
3176 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3177 | offplt = local_tlsdesc_gotents[r_symndx]; |
13ae64f3 JJ |
3178 | } |
3179 | ||
3180 | if ((off & 1) != 0) | |
3181 | off &= ~1; | |
26e41594 | 3182 | else |
13ae64f3 | 3183 | { |
947216bf AM |
3184 | Elf_Internal_Rela outrel; |
3185 | bfd_byte *loc; | |
13ae64f3 | 3186 | int dr_type, indx; |
67a4f2b7 | 3187 | asection *sreloc; |
13ae64f3 JJ |
3188 | |
3189 | if (htab->srelgot == NULL) | |
3190 | abort (); | |
3191 | ||
67a4f2b7 AO |
3192 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
3193 | ||
3194 | if (GOT_TLS_GDESC_P (tls_type)) | |
3195 | { | |
3196 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC); | |
3197 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8 | |
3198 | <= htab->sgotplt->size); | |
3199 | outrel.r_offset = (htab->sgotplt->output_section->vma | |
3200 | + htab->sgotplt->output_offset | |
3201 | + offplt | |
3202 | + htab->sgotplt_jump_table_size); | |
3203 | sreloc = htab->srelplt; | |
3204 | loc = sreloc->contents; | |
5ae0bfb6 RS |
3205 | loc += (htab->next_tls_desc_index++ |
3206 | * sizeof (Elf32_External_Rel)); | |
67a4f2b7 AO |
3207 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) |
3208 | <= sreloc->contents + sreloc->size); | |
3209 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
3210 | if (indx == 0) | |
3211 | { | |
3212 | BFD_ASSERT (! unresolved_reloc); | |
3213 | bfd_put_32 (output_bfd, | |
3214 | relocation - dtpoff_base (info), | |
3215 | htab->sgotplt->contents + offplt | |
3216 | + htab->sgotplt_jump_table_size + 4); | |
3217 | } | |
3218 | else | |
3219 | { | |
3220 | bfd_put_32 (output_bfd, 0, | |
3221 | htab->sgotplt->contents + offplt | |
3222 | + htab->sgotplt_jump_table_size + 4); | |
3223 | } | |
3224 | } | |
3225 | ||
3226 | sreloc = htab->srelgot; | |
3227 | ||
13ae64f3 JJ |
3228 | outrel.r_offset = (htab->sgot->output_section->vma |
3229 | + htab->sgot->output_offset + off); | |
3230 | ||
67a4f2b7 | 3231 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 | 3232 | dr_type = R_386_TLS_DTPMOD32; |
67a4f2b7 AO |
3233 | else if (GOT_TLS_GDESC_P (tls_type)) |
3234 | goto dr_done; | |
37e55690 JJ |
3235 | else if (tls_type == GOT_TLS_IE_POS) |
3236 | dr_type = R_386_TLS_TPOFF; | |
13ae64f3 JJ |
3237 | else |
3238 | dr_type = R_386_TLS_TPOFF32; | |
67a4f2b7 | 3239 | |
37e55690 JJ |
3240 | if (dr_type == R_386_TLS_TPOFF && indx == 0) |
3241 | bfd_put_32 (output_bfd, relocation - dtpoff_base (info), | |
3242 | htab->sgot->contents + off); | |
3243 | else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) | |
c5c1f40c | 3244 | bfd_put_32 (output_bfd, dtpoff_base (info) - relocation, |
c366c25e | 3245 | htab->sgot->contents + off); |
67a4f2b7 | 3246 | else if (dr_type != R_386_TLS_DESC) |
c366c25e JJ |
3247 | bfd_put_32 (output_bfd, 0, |
3248 | htab->sgot->contents + off); | |
13ae64f3 | 3249 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
67a4f2b7 AO |
3250 | |
3251 | loc = sreloc->contents; | |
3252 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
3253 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) | |
3254 | <= sreloc->contents + sreloc->size); | |
13ae64f3 JJ |
3255 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3256 | ||
67a4f2b7 | 3257 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 JJ |
3258 | { |
3259 | if (indx == 0) | |
3260 | { | |
82e51918 | 3261 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
3262 | bfd_put_32 (output_bfd, |
3263 | relocation - dtpoff_base (info), | |
3264 | htab->sgot->contents + off + 4); | |
3265 | } | |
3266 | else | |
3267 | { | |
3268 | bfd_put_32 (output_bfd, 0, | |
3269 | htab->sgot->contents + off + 4); | |
3270 | outrel.r_info = ELF32_R_INFO (indx, | |
3271 | R_386_TLS_DTPOFF32); | |
3272 | outrel.r_offset += 4; | |
67a4f2b7 | 3273 | sreloc->reloc_count++; |
947216bf | 3274 | loc += sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
3275 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) |
3276 | <= sreloc->contents + sreloc->size); | |
947216bf | 3277 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
13ae64f3 JJ |
3278 | } |
3279 | } | |
37e55690 JJ |
3280 | else if (tls_type == GOT_TLS_IE_BOTH) |
3281 | { | |
3282 | bfd_put_32 (output_bfd, | |
3283 | indx == 0 ? relocation - dtpoff_base (info) : 0, | |
3284 | htab->sgot->contents + off + 4); | |
3285 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
3286 | outrel.r_offset += 4; | |
67a4f2b7 | 3287 | sreloc->reloc_count++; |
947216bf | 3288 | loc += sizeof (Elf32_External_Rel); |
37e55690 JJ |
3289 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3290 | } | |
13ae64f3 | 3291 | |
67a4f2b7 | 3292 | dr_done: |
13ae64f3 JJ |
3293 | if (h != NULL) |
3294 | h->got.offset |= 1; | |
3295 | else | |
3296 | local_got_offsets[r_symndx] |= 1; | |
3297 | } | |
3298 | ||
67a4f2b7 AO |
3299 | if (off >= (bfd_vma) -2 |
3300 | && ! GOT_TLS_GDESC_P (tls_type)) | |
13ae64f3 | 3301 | abort (); |
67a4f2b7 AO |
3302 | if (r_type == R_386_TLS_GOTDESC |
3303 | || r_type == R_386_TLS_DESC_CALL) | |
3304 | { | |
3305 | relocation = htab->sgotplt_jump_table_size + offplt; | |
3306 | unresolved_reloc = FALSE; | |
3307 | } | |
3308 | else if (r_type == ELF32_R_TYPE (rel->r_info)) | |
13ae64f3 | 3309 | { |
8c37241b JJ |
3310 | bfd_vma g_o_t = htab->sgotplt->output_section->vma |
3311 | + htab->sgotplt->output_offset; | |
3312 | relocation = htab->sgot->output_section->vma | |
67a4f2b7 | 3313 | + htab->sgot->output_offset + off - g_o_t; |
37e55690 JJ |
3314 | if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) |
3315 | && tls_type == GOT_TLS_IE_BOTH) | |
3316 | relocation += 4; | |
3317 | if (r_type == R_386_TLS_IE) | |
8c37241b | 3318 | relocation += g_o_t; |
b34976b6 | 3319 | unresolved_reloc = FALSE; |
13ae64f3 | 3320 | } |
67a4f2b7 | 3321 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
13ae64f3 JJ |
3322 | { |
3323 | unsigned int val, type; | |
3324 | bfd_vma roff; | |
3325 | ||
3326 | /* GD->IE transition. */ | |
13ae64f3 | 3327 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
3328 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
3329 | if (type == 0x04) | |
3330 | { | |
3331 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
3332 | Change it into: | |
3333 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 | 3334 | val >>= 3; |
142411ca | 3335 | roff = rel->r_offset - 3; |
13ae64f3 JJ |
3336 | } |
3337 | else | |
3338 | { | |
3339 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
3340 | Change it into: | |
3341 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 JJ |
3342 | roff = rel->r_offset - 2; |
3343 | } | |
3344 | memcpy (contents + roff, | |
3345 | "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); | |
3346 | contents[roff + 7] = 0x80 | (val & 7); | |
37e55690 JJ |
3347 | /* If foo is used only with foo@gotntpoff(%reg) and |
3348 | foo@indntpoff, but not with foo@gottpoff(%reg), change | |
3349 | subl $foo@gottpoff(%reg), %eax | |
3350 | into: | |
3351 | addl $foo@gotntpoff(%reg), %eax. */ | |
ebcfb3c0 JJ |
3352 | if (tls_type == GOT_TLS_IE_POS) |
3353 | contents[roff + 6] = 0x03; | |
8c37241b JJ |
3354 | bfd_put_32 (output_bfd, |
3355 | htab->sgot->output_section->vma | |
3356 | + htab->sgot->output_offset + off | |
3357 | - htab->sgotplt->output_section->vma | |
3358 | - htab->sgotplt->output_offset, | |
13ae64f3 JJ |
3359 | contents + roff + 8); |
3360 | /* Skip R_386_PLT32. */ | |
3361 | rel++; | |
3362 | continue; | |
3363 | } | |
67a4f2b7 AO |
3364 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
3365 | { | |
3366 | /* GDesc -> IE transition. | |
3367 | It's originally something like: | |
3368 | leal x@tlsdesc(%ebx), %eax | |
3369 | ||
3370 | Change it to: | |
142411ca | 3371 | movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax |
67a4f2b7 AO |
3372 | or: |
3373 | movl x@gottpoff(%ebx), %eax # before negl %eax | |
3374 | ||
3375 | Registers other than %eax may be set up here. */ | |
3376 | ||
67a4f2b7 AO |
3377 | bfd_vma roff; |
3378 | ||
3379 | /* First, make sure it's a leal adding ebx to a 32-bit | |
3380 | offset into any register, although it's probably | |
3381 | almost always going to be eax. */ | |
3382 | roff = rel->r_offset; | |
67a4f2b7 AO |
3383 | |
3384 | /* Now modify the instruction as appropriate. */ | |
3385 | /* To turn a leal into a movl in the form we use it, it | |
3386 | suffices to change the first byte from 0x8d to 0x8b. | |
3387 | aoliva FIXME: should we decide to keep the leal, all | |
3388 | we have to do is remove the statement below, and | |
3389 | adjust the relaxation of R_386_TLS_DESC_CALL. */ | |
3390 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
3391 | ||
3392 | if (tls_type == GOT_TLS_IE_BOTH) | |
3393 | off += 4; | |
3394 | ||
3395 | bfd_put_32 (output_bfd, | |
3396 | htab->sgot->output_section->vma | |
3397 | + htab->sgot->output_offset + off | |
3398 | - htab->sgotplt->output_section->vma | |
3399 | - htab->sgotplt->output_offset, | |
3400 | contents + roff); | |
3401 | continue; | |
3402 | } | |
3403 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
3404 | { | |
3405 | /* GDesc -> IE transition. | |
3406 | It's originally: | |
3407 | call *(%eax) | |
3408 | ||
3409 | Change it to: | |
142411ca | 3410 | xchg %ax,%ax |
67a4f2b7 AO |
3411 | or |
3412 | negl %eax | |
3413 | depending on how we transformed the TLS_GOTDESC above. | |
3414 | */ | |
3415 | ||
67a4f2b7 AO |
3416 | bfd_vma roff; |
3417 | ||
67a4f2b7 | 3418 | roff = rel->r_offset; |
67a4f2b7 AO |
3419 | |
3420 | /* Now modify the instruction as appropriate. */ | |
3421 | if (tls_type != GOT_TLS_IE_NEG) | |
3422 | { | |
10efb593 L |
3423 | /* xchg %ax,%ax */ |
3424 | bfd_put_8 (output_bfd, 0x66, contents + roff); | |
67a4f2b7 AO |
3425 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3426 | } | |
3427 | else | |
3428 | { | |
3429 | /* negl %eax */ | |
3430 | bfd_put_8 (output_bfd, 0xf7, contents + roff); | |
3431 | bfd_put_8 (output_bfd, 0xd8, contents + roff + 1); | |
3432 | } | |
3433 | ||
3434 | continue; | |
3435 | } | |
3436 | else | |
3437 | BFD_ASSERT (FALSE); | |
13ae64f3 JJ |
3438 | break; |
3439 | ||
3440 | case R_386_TLS_LDM: | |
142411ca L |
3441 | if (! elf_i386_tls_transition (info, input_bfd, |
3442 | input_section, contents, | |
3443 | symtab_hdr, sym_hashes, | |
3444 | &r_type, GOT_UNKNOWN, rel, | |
3445 | relend, h)) | |
3446 | return FALSE; | |
13ae64f3 | 3447 | |
142411ca L |
3448 | if (r_type != R_386_TLS_LDM) |
3449 | { | |
13ae64f3 | 3450 | /* LD->LE transition: |
13ae64f3 JJ |
3451 | leal foo(%reg), %eax; call ___tls_get_addr. |
3452 | We change it into: | |
3453 | movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */ | |
142411ca | 3454 | BFD_ASSERT (r_type == R_386_TLS_LE_32); |
13ae64f3 JJ |
3455 | memcpy (contents + rel->r_offset - 2, |
3456 | "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); | |
a3fadc9a | 3457 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
3458 | rel++; |
3459 | continue; | |
3460 | } | |
3461 | ||
3462 | if (htab->sgot == NULL) | |
3463 | abort (); | |
3464 | ||
3465 | off = htab->tls_ldm_got.offset; | |
3466 | if (off & 1) | |
3467 | off &= ~1; | |
3468 | else | |
3469 | { | |
947216bf AM |
3470 | Elf_Internal_Rela outrel; |
3471 | bfd_byte *loc; | |
13ae64f3 JJ |
3472 | |
3473 | if (htab->srelgot == NULL) | |
3474 | abort (); | |
3475 | ||
3476 | outrel.r_offset = (htab->sgot->output_section->vma | |
3477 | + htab->sgot->output_offset + off); | |
3478 | ||
3479 | bfd_put_32 (output_bfd, 0, | |
3480 | htab->sgot->contents + off); | |
3481 | bfd_put_32 (output_bfd, 0, | |
3482 | htab->sgot->contents + off + 4); | |
3483 | outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); | |
947216bf AM |
3484 | loc = htab->srelgot->contents; |
3485 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
3486 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3487 | htab->tls_ldm_got.offset |= 1; | |
3488 | } | |
8c37241b JJ |
3489 | relocation = htab->sgot->output_section->vma |
3490 | + htab->sgot->output_offset + off | |
3491 | - htab->sgotplt->output_section->vma | |
3492 | - htab->sgotplt->output_offset; | |
b34976b6 | 3493 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
3494 | break; |
3495 | ||
3496 | case R_386_TLS_LDO_32: | |
a45bb67d | 3497 | if (info->shared || (input_section->flags & SEC_CODE) == 0) |
13ae64f3 JJ |
3498 | relocation -= dtpoff_base (info); |
3499 | else | |
3500 | /* When converting LDO to LE, we must negate. */ | |
3501 | relocation = -tpoff (info, relocation); | |
3502 | break; | |
3503 | ||
3504 | case R_386_TLS_LE_32: | |
13ae64f3 | 3505 | case R_386_TLS_LE: |
37e55690 JJ |
3506 | if (info->shared) |
3507 | { | |
947216bf | 3508 | Elf_Internal_Rela outrel; |
37e55690 | 3509 | asection *sreloc; |
947216bf | 3510 | bfd_byte *loc; |
37e55690 JJ |
3511 | int indx; |
3512 | ||
3513 | outrel.r_offset = rel->r_offset | |
3514 | + input_section->output_section->vma | |
3515 | + input_section->output_offset; | |
3516 | if (h != NULL && h->dynindx != -1) | |
3517 | indx = h->dynindx; | |
3518 | else | |
3519 | indx = 0; | |
3520 | if (r_type == R_386_TLS_LE_32) | |
3521 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); | |
3522 | else | |
3523 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
3524 | sreloc = elf_section_data (input_section)->sreloc; | |
3525 | if (sreloc == NULL) | |
3526 | abort (); | |
947216bf AM |
3527 | loc = sreloc->contents; |
3528 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
3529 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3530 | if (indx) | |
3531 | continue; | |
3532 | else if (r_type == R_386_TLS_LE_32) | |
3533 | relocation = dtpoff_base (info) - relocation; | |
3534 | else | |
3535 | relocation -= dtpoff_base (info); | |
3536 | } | |
3537 | else if (r_type == R_386_TLS_LE_32) | |
3538 | relocation = tpoff (info, relocation); | |
3539 | else | |
3540 | relocation = -tpoff (info, relocation); | |
13ae64f3 JJ |
3541 | break; |
3542 | ||
252b5132 RH |
3543 | default: |
3544 | break; | |
3545 | } | |
3546 | ||
239e1f3a AM |
3547 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3548 | because such sections are not SEC_ALLOC and thus ld.so will | |
3549 | not process them. */ | |
8c694914 | 3550 | if (unresolved_reloc |
239e1f3a | 3551 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 3552 | && h->def_dynamic)) |
6a30718d JJ |
3553 | { |
3554 | (*_bfd_error_handler) | |
843fe662 | 3555 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
3556 | input_bfd, |
3557 | input_section, | |
6a30718d | 3558 | (long) rel->r_offset, |
843fe662 | 3559 | howto->name, |
6a30718d | 3560 | h->root.root.string); |
b34976b6 | 3561 | return FALSE; |
6a30718d | 3562 | } |
83be169b | 3563 | |
252b5132 RH |
3564 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3565 | contents, rel->r_offset, | |
55fd94b0 | 3566 | relocation, 0); |
252b5132 | 3567 | |
cf5c0c5b | 3568 | if (r != bfd_reloc_ok) |
252b5132 | 3569 | { |
cf5c0c5b | 3570 | const char *name; |
ffb2e45b | 3571 | |
cf5c0c5b AM |
3572 | if (h != NULL) |
3573 | name = h->root.root.string; | |
3574 | else | |
3575 | { | |
3576 | name = bfd_elf_string_from_elf_section (input_bfd, | |
3577 | symtab_hdr->sh_link, | |
3578 | sym->st_name); | |
3579 | if (name == NULL) | |
b34976b6 | 3580 | return FALSE; |
cf5c0c5b AM |
3581 | if (*name == '\0') |
3582 | name = bfd_section_name (input_bfd, sec); | |
3583 | } | |
ffb2e45b | 3584 | |
cf5c0c5b AM |
3585 | if (r == bfd_reloc_overflow) |
3586 | { | |
cf5c0c5b | 3587 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
3588 | (info, (h ? &h->root : NULL), name, howto->name, |
3589 | (bfd_vma) 0, input_bfd, input_section, | |
3590 | rel->r_offset))) | |
b34976b6 | 3591 | return FALSE; |
cf5c0c5b AM |
3592 | } |
3593 | else | |
3594 | { | |
3595 | (*_bfd_error_handler) | |
d003868e AM |
3596 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
3597 | input_bfd, input_section, | |
cf5c0c5b | 3598 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 3599 | return FALSE; |
cf5c0c5b | 3600 | } |
252b5132 RH |
3601 | } |
3602 | } | |
3603 | ||
b34976b6 | 3604 | return TRUE; |
252b5132 RH |
3605 | } |
3606 | ||
3607 | /* Finish up dynamic symbol handling. We set the contents of various | |
3608 | dynamic sections here. */ | |
3609 | ||
b34976b6 | 3610 | static bfd_boolean |
55fd94b0 AM |
3611 | elf_i386_finish_dynamic_symbol (bfd *output_bfd, |
3612 | struct bfd_link_info *info, | |
3613 | struct elf_link_hash_entry *h, | |
3614 | Elf_Internal_Sym *sym) | |
252b5132 | 3615 | { |
6725bdbf | 3616 | struct elf_i386_link_hash_table *htab; |
252b5132 | 3617 | |
6725bdbf | 3618 | htab = elf_i386_hash_table (info); |
252b5132 RH |
3619 | |
3620 | if (h->plt.offset != (bfd_vma) -1) | |
3621 | { | |
252b5132 RH |
3622 | bfd_vma plt_index; |
3623 | bfd_vma got_offset; | |
947216bf AM |
3624 | Elf_Internal_Rela rel; |
3625 | bfd_byte *loc; | |
252b5132 RH |
3626 | |
3627 | /* This symbol has an entry in the procedure linkage table. Set | |
3628 | it up. */ | |
3629 | ||
ffb2e45b AM |
3630 | if (h->dynindx == -1 |
3631 | || htab->splt == NULL | |
3632 | || htab->sgotplt == NULL | |
3633 | || htab->srelplt == NULL) | |
3634 | abort (); | |
252b5132 RH |
3635 | |
3636 | /* Get the index in the procedure linkage table which | |
3637 | corresponds to this symbol. This is the index of this symbol | |
3638 | in all the symbols for which we are making plt entries. The | |
3639 | first entry in the procedure linkage table is reserved. */ | |
3640 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3641 | ||
3642 | /* Get the offset into the .got table of the entry that | |
3643 | corresponds to this function. Each .got entry is 4 bytes. | |
3644 | The first three are reserved. */ | |
3645 | got_offset = (plt_index + 3) * 4; | |
3646 | ||
3647 | /* Fill in the entry in the procedure linkage table. */ | |
3648 | if (! info->shared) | |
3649 | { | |
6725bdbf | 3650 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry, |
252b5132 RH |
3651 | PLT_ENTRY_SIZE); |
3652 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
3653 | (htab->sgotplt->output_section->vma |
3654 | + htab->sgotplt->output_offset | |
252b5132 | 3655 | + got_offset), |
6725bdbf | 3656 | htab->splt->contents + h->plt.offset + 2); |
eac338cf PB |
3657 | |
3658 | if (htab->is_vxworks) | |
3659 | { | |
3660 | int s, k, reloc_index; | |
3661 | ||
3662 | /* Create the R_386_32 relocation referencing the GOT | |
3663 | for this PLT entry. */ | |
3664 | ||
3665 | /* S: Current slot number (zero-based). */ | |
3666 | s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
3667 | /* K: Number of relocations for PLTResolve. */ | |
3668 | if (info->shared) | |
3669 | k = PLTRESOLVE_RELOCS_SHLIB; | |
3670 | else | |
3671 | k = PLTRESOLVE_RELOCS; | |
3672 | /* Skip the PLTresolve relocations, and the relocations for | |
3673 | the other PLT slots. */ | |
3674 | reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS; | |
3675 | loc = (htab->srelplt2->contents + reloc_index | |
3676 | * sizeof (Elf32_External_Rel)); | |
3677 | ||
3678 | rel.r_offset = (htab->splt->output_section->vma | |
3679 | + htab->splt->output_offset | |
3680 | + h->plt.offset + 2), | |
7325306f | 3681 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
3682 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
3683 | ||
3684 | /* Create the R_386_32 relocation referencing the beginning of | |
3685 | the PLT for this GOT entry. */ | |
3686 | rel.r_offset = (htab->sgotplt->output_section->vma | |
3687 | + htab->sgotplt->output_offset | |
3688 | + got_offset); | |
7325306f | 3689 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf PB |
3690 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
3691 | loc + sizeof (Elf32_External_Rel)); | |
3692 | } | |
252b5132 RH |
3693 | } |
3694 | else | |
3695 | { | |
6725bdbf | 3696 | memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry, |
252b5132 RH |
3697 | PLT_ENTRY_SIZE); |
3698 | bfd_put_32 (output_bfd, got_offset, | |
6725bdbf | 3699 | htab->splt->contents + h->plt.offset + 2); |
252b5132 RH |
3700 | } |
3701 | ||
3702 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel), | |
6725bdbf | 3703 | htab->splt->contents + h->plt.offset + 7); |
252b5132 | 3704 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), |
6725bdbf | 3705 | htab->splt->contents + h->plt.offset + 12); |
252b5132 RH |
3706 | |
3707 | /* Fill in the entry in the global offset table. */ | |
3708 | bfd_put_32 (output_bfd, | |
6725bdbf AM |
3709 | (htab->splt->output_section->vma |
3710 | + htab->splt->output_offset | |
252b5132 RH |
3711 | + h->plt.offset |
3712 | + 6), | |
6725bdbf | 3713 | htab->sgotplt->contents + got_offset); |
252b5132 RH |
3714 | |
3715 | /* Fill in the entry in the .rel.plt section. */ | |
6725bdbf AM |
3716 | rel.r_offset = (htab->sgotplt->output_section->vma |
3717 | + htab->sgotplt->output_offset | |
252b5132 RH |
3718 | + got_offset); |
3719 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); | |
947216bf | 3720 | loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel); |
0ac8d2ca | 3721 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 | 3722 | |
f5385ebf | 3723 | if (!h->def_regular) |
252b5132 RH |
3724 | { |
3725 | /* Mark the symbol as undefined, rather than as defined in | |
c6585bbb JJ |
3726 | the .plt section. Leave the value if there were any |
3727 | relocations where pointer equality matters (this is a clue | |
51b64d56 AM |
3728 | for the dynamic linker, to make function pointer |
3729 | comparisons work between an application and shared | |
c6585bbb JJ |
3730 | library), otherwise set it to zero. If a function is only |
3731 | called from a binary, there is no need to slow down | |
3732 | shared libraries because of that. */ | |
252b5132 | 3733 | sym->st_shndx = SHN_UNDEF; |
f5385ebf | 3734 | if (!h->pointer_equality_needed) |
c6585bbb | 3735 | sym->st_value = 0; |
252b5132 RH |
3736 | } |
3737 | } | |
3738 | ||
13ae64f3 | 3739 | if (h->got.offset != (bfd_vma) -1 |
67a4f2b7 | 3740 | && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type) |
37e55690 | 3741 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0) |
252b5132 | 3742 | { |
947216bf AM |
3743 | Elf_Internal_Rela rel; |
3744 | bfd_byte *loc; | |
252b5132 RH |
3745 | |
3746 | /* This symbol has an entry in the global offset table. Set it | |
3747 | up. */ | |
3748 | ||
ffb2e45b AM |
3749 | if (htab->sgot == NULL || htab->srelgot == NULL) |
3750 | abort (); | |
252b5132 | 3751 | |
6725bdbf AM |
3752 | rel.r_offset = (htab->sgot->output_section->vma |
3753 | + htab->sgot->output_offset | |
dc810e39 | 3754 | + (h->got.offset & ~(bfd_vma) 1)); |
252b5132 | 3755 | |
dd5724d5 AM |
3756 | /* If this is a static link, or it is a -Bsymbolic link and the |
3757 | symbol is defined locally or was forced to be local because | |
3758 | of a version file, we just want to emit a RELATIVE reloc. | |
252b5132 RH |
3759 | The entry in the global offset table will already have been |
3760 | initialized in the relocate_section function. */ | |
6725bdbf | 3761 | if (info->shared |
586119b3 | 3762 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
dd5724d5 | 3763 | { |
6725bdbf | 3764 | BFD_ASSERT((h->got.offset & 1) != 0); |
dd5724d5 AM |
3765 | rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
3766 | } | |
252b5132 RH |
3767 | else |
3768 | { | |
dd5724d5 | 3769 | BFD_ASSERT((h->got.offset & 1) == 0); |
6725bdbf AM |
3770 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
3771 | htab->sgot->contents + h->got.offset); | |
252b5132 RH |
3772 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); |
3773 | } | |
3774 | ||
947216bf AM |
3775 | loc = htab->srelgot->contents; |
3776 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3777 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3778 | } |
3779 | ||
f5385ebf | 3780 | if (h->needs_copy) |
252b5132 | 3781 | { |
947216bf AM |
3782 | Elf_Internal_Rela rel; |
3783 | bfd_byte *loc; | |
252b5132 RH |
3784 | |
3785 | /* This symbol needs a copy reloc. Set it up. */ | |
3786 | ||
ffb2e45b AM |
3787 | if (h->dynindx == -1 |
3788 | || (h->root.type != bfd_link_hash_defined | |
3789 | && h->root.type != bfd_link_hash_defweak) | |
3790 | || htab->srelbss == NULL) | |
3791 | abort (); | |
252b5132 RH |
3792 | |
3793 | rel.r_offset = (h->root.u.def.value | |
3794 | + h->root.u.def.section->output_section->vma | |
3795 | + h->root.u.def.section->output_offset); | |
3796 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); | |
947216bf AM |
3797 | loc = htab->srelbss->contents; |
3798 | loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3799 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
3800 | } |
3801 | ||
eac338cf PB |
3802 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. |
3803 | On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it | |
3804 | is relative to the ".got" section. */ | |
252b5132 | 3805 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
22edb2f1 | 3806 | || (!htab->is_vxworks && h == htab->elf.hgot)) |
252b5132 RH |
3807 | sym->st_shndx = SHN_ABS; |
3808 | ||
b34976b6 | 3809 | return TRUE; |
252b5132 RH |
3810 | } |
3811 | ||
38701953 AM |
3812 | /* Used to decide how to sort relocs in an optimal manner for the |
3813 | dynamic linker, before writing them out. */ | |
3814 | ||
3815 | static enum elf_reloc_type_class | |
55fd94b0 | 3816 | elf_i386_reloc_type_class (const Elf_Internal_Rela *rela) |
38701953 | 3817 | { |
55fd94b0 | 3818 | switch (ELF32_R_TYPE (rela->r_info)) |
38701953 AM |
3819 | { |
3820 | case R_386_RELATIVE: | |
3821 | return reloc_class_relative; | |
3822 | case R_386_JUMP_SLOT: | |
3823 | return reloc_class_plt; | |
3824 | case R_386_COPY: | |
3825 | return reloc_class_copy; | |
3826 | default: | |
3827 | return reloc_class_normal; | |
3828 | } | |
3829 | } | |
3830 | ||
252b5132 RH |
3831 | /* Finish up the dynamic sections. */ |
3832 | ||
b34976b6 | 3833 | static bfd_boolean |
55fd94b0 AM |
3834 | elf_i386_finish_dynamic_sections (bfd *output_bfd, |
3835 | struct bfd_link_info *info) | |
252b5132 | 3836 | { |
6725bdbf | 3837 | struct elf_i386_link_hash_table *htab; |
252b5132 | 3838 | bfd *dynobj; |
252b5132 RH |
3839 | asection *sdyn; |
3840 | ||
6725bdbf | 3841 | htab = elf_i386_hash_table (info); |
ebe50bae | 3842 | dynobj = htab->elf.dynobj; |
252b5132 RH |
3843 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
3844 | ||
ebe50bae | 3845 | if (htab->elf.dynamic_sections_created) |
252b5132 | 3846 | { |
252b5132 RH |
3847 | Elf32_External_Dyn *dyncon, *dynconend; |
3848 | ||
ffb2e45b AM |
3849 | if (sdyn == NULL || htab->sgot == NULL) |
3850 | abort (); | |
252b5132 RH |
3851 | |
3852 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 3853 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
3854 | for (; dyncon < dynconend; dyncon++) |
3855 | { | |
3856 | Elf_Internal_Dyn dyn; | |
51b64d56 | 3857 | asection *s; |
252b5132 RH |
3858 | |
3859 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
3860 | ||
3861 | switch (dyn.d_tag) | |
3862 | { | |
3863 | default: | |
7a2b07ff NS |
3864 | if (htab->is_vxworks |
3865 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
3866 | break; | |
0ac8d2ca | 3867 | continue; |
252b5132 RH |
3868 | |
3869 | case DT_PLTGOT: | |
8c37241b JJ |
3870 | s = htab->sgotplt; |
3871 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
6725bdbf AM |
3872 | break; |
3873 | ||
252b5132 | 3874 | case DT_JMPREL: |
6348e046 AM |
3875 | s = htab->srelplt; |
3876 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
252b5132 RH |
3877 | break; |
3878 | ||
3879 | case DT_PLTRELSZ: | |
6348e046 | 3880 | s = htab->srelplt; |
eea6121a | 3881 | dyn.d_un.d_val = s->size; |
252b5132 RH |
3882 | break; |
3883 | ||
3884 | case DT_RELSZ: | |
3885 | /* My reading of the SVR4 ABI indicates that the | |
3886 | procedure linkage table relocs (DT_JMPREL) should be | |
3887 | included in the overall relocs (DT_REL). This is | |
3888 | what Solaris does. However, UnixWare can not handle | |
3889 | that case. Therefore, we override the DT_RELSZ entry | |
6348e046 AM |
3890 | here to make it not include the JMPREL relocs. */ |
3891 | s = htab->srelplt; | |
3892 | if (s == NULL) | |
3893 | continue; | |
eea6121a | 3894 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
3895 | break; |
3896 | ||
3897 | case DT_REL: | |
3898 | /* We may not be using the standard ELF linker script. | |
3899 | If .rel.plt is the first .rel section, we adjust | |
3900 | DT_REL to not include it. */ | |
3901 | s = htab->srelplt; | |
3902 | if (s == NULL) | |
3903 | continue; | |
3904 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
3905 | continue; | |
eea6121a | 3906 | dyn.d_un.d_ptr += s->size; |
252b5132 RH |
3907 | break; |
3908 | } | |
0ac8d2ca AM |
3909 | |
3910 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
3911 | } |
3912 | ||
3913 | /* Fill in the first entry in the procedure linkage table. */ | |
eea6121a | 3914 | if (htab->splt && htab->splt->size > 0) |
252b5132 RH |
3915 | { |
3916 | if (info->shared) | |
eac338cf PB |
3917 | { |
3918 | memcpy (htab->splt->contents, elf_i386_pic_plt0_entry, | |
3919 | sizeof (elf_i386_pic_plt0_entry)); | |
3920 | memset (htab->splt->contents + sizeof (elf_i386_pic_plt0_entry), | |
3921 | htab->plt0_pad_byte, | |
3922 | PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry)); | |
3923 | } | |
252b5132 RH |
3924 | else |
3925 | { | |
eac338cf PB |
3926 | memcpy (htab->splt->contents, elf_i386_plt0_entry, |
3927 | sizeof(elf_i386_plt0_entry)); | |
3928 | memset (htab->splt->contents + sizeof (elf_i386_plt0_entry), | |
3929 | htab->plt0_pad_byte, | |
3930 | PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry)); | |
252b5132 | 3931 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3932 | (htab->sgotplt->output_section->vma |
3933 | + htab->sgotplt->output_offset | |
3934 | + 4), | |
3935 | htab->splt->contents + 2); | |
252b5132 | 3936 | bfd_put_32 (output_bfd, |
6725bdbf AM |
3937 | (htab->sgotplt->output_section->vma |
3938 | + htab->sgotplt->output_offset | |
3939 | + 8), | |
3940 | htab->splt->contents + 8); | |
eac338cf PB |
3941 | |
3942 | if (htab->is_vxworks) | |
3943 | { | |
3944 | Elf_Internal_Rela rel; | |
7325306f | 3945 | |
eac338cf PB |
3946 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4. |
3947 | On IA32 we use REL relocations so the addend goes in | |
3948 | the PLT directly. */ | |
3949 | rel.r_offset = (htab->splt->output_section->vma | |
3950 | + htab->splt->output_offset | |
3951 | + 2); | |
7325306f | 3952 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
3953 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
3954 | htab->srelplt2->contents); | |
3955 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
3956 | rel.r_offset = (htab->splt->output_section->vma | |
3957 | + htab->splt->output_offset | |
3958 | + 8); | |
7325306f | 3959 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
3960 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
3961 | htab->srelplt2->contents + | |
3962 | sizeof (Elf32_External_Rel)); | |
3963 | } | |
252b5132 RH |
3964 | } |
3965 | ||
3966 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
3967 | really seem like the right value. */ | |
6725bdbf AM |
3968 | elf_section_data (htab->splt->output_section) |
3969 | ->this_hdr.sh_entsize = 4; | |
eac338cf PB |
3970 | |
3971 | /* Correct the .rel.plt.unloaded relocations. */ | |
3972 | if (htab->is_vxworks && !info->shared) | |
3973 | { | |
3974 | int num_plts = (htab->splt->size / PLT_ENTRY_SIZE) - 1; | |
4c9b0de6 | 3975 | unsigned char *p; |
eac338cf PB |
3976 | |
3977 | p = htab->srelplt2->contents; | |
3978 | if (info->shared) | |
3979 | p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel); | |
3980 | else | |
3981 | p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel); | |
3982 | ||
3983 | for (; num_plts; num_plts--) | |
3984 | { | |
3985 | Elf_Internal_Rela rel; | |
3986 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 3987 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
3988 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
3989 | p += sizeof (Elf32_External_Rel); | |
3990 | ||
3991 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 3992 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf PB |
3993 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
3994 | p += sizeof (Elf32_External_Rel); | |
3995 | } | |
3996 | } | |
252b5132 RH |
3997 | } |
3998 | } | |
3999 | ||
12d0ee4a | 4000 | if (htab->sgotplt) |
252b5132 | 4001 | { |
12d0ee4a | 4002 | /* Fill in the first three entries in the global offset table. */ |
eea6121a | 4003 | if (htab->sgotplt->size > 0) |
12d0ee4a AM |
4004 | { |
4005 | bfd_put_32 (output_bfd, | |
55fd94b0 | 4006 | (sdyn == NULL ? 0 |
12d0ee4a AM |
4007 | : sdyn->output_section->vma + sdyn->output_offset), |
4008 | htab->sgotplt->contents); | |
55fd94b0 AM |
4009 | bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 4); |
4010 | bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 8); | |
12d0ee4a | 4011 | } |
252b5132 | 4012 | |
12d0ee4a AM |
4013 | elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4; |
4014 | } | |
8c37241b | 4015 | |
eea6121a | 4016 | if (htab->sgot && htab->sgot->size > 0) |
8c37241b JJ |
4017 | elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4; |
4018 | ||
b34976b6 | 4019 | return TRUE; |
252b5132 RH |
4020 | } |
4021 | ||
4c45e5c9 JJ |
4022 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4023 | or (bfd_vma) -1 if it should not be included. */ | |
4024 | ||
4025 | static bfd_vma | |
4026 | elf_i386_plt_sym_val (bfd_vma i, const asection *plt, | |
4027 | const arelent *rel ATTRIBUTE_UNUSED) | |
4028 | { | |
4029 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
4030 | } | |
4031 | ||
fdc90cb4 JJ |
4032 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
4033 | ||
4034 | static bfd_boolean | |
4035 | elf_i386_hash_symbol (struct elf_link_hash_entry *h) | |
4036 | { | |
4037 | if (h->plt.offset != (bfd_vma) -1 | |
4038 | && !h->def_regular | |
4039 | && !h->pointer_equality_needed) | |
4040 | return FALSE; | |
4041 | ||
4042 | return _bfd_elf_hash_symbol (h); | |
4043 | } | |
4c45e5c9 | 4044 | |
252b5132 RH |
4045 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vec |
4046 | #define TARGET_LITTLE_NAME "elf32-i386" | |
4047 | #define ELF_ARCH bfd_arch_i386 | |
4048 | #define ELF_MACHINE_CODE EM_386 | |
4049 | #define ELF_MAXPAGESIZE 0x1000 | |
252b5132 RH |
4050 | |
4051 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4052 | #define elf_backend_can_refcount 1 |
252b5132 RH |
4053 | #define elf_backend_want_got_plt 1 |
4054 | #define elf_backend_plt_readonly 1 | |
4055 | #define elf_backend_want_plt_sym 0 | |
4056 | #define elf_backend_got_header_size 12 | |
252b5132 | 4057 | |
8c29f035 AM |
4058 | /* Support RELA for objdump of prelink objects. */ |
4059 | #define elf_info_to_howto elf_i386_info_to_howto_rel | |
dd5724d5 AM |
4060 | #define elf_info_to_howto_rel elf_i386_info_to_howto_rel |
4061 | ||
13ae64f3 | 4062 | #define bfd_elf32_mkobject elf_i386_mkobject |
13ae64f3 | 4063 | |
dd5724d5 AM |
4064 | #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name |
4065 | #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create | |
4066 | #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup | |
13285a1b | 4067 | #define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup |
dd5724d5 AM |
4068 | |
4069 | #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol | |
13285a1b | 4070 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
dd5724d5 | 4071 | #define elf_backend_check_relocs elf_i386_check_relocs |
0ac8d2ca | 4072 | #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol |
6725bdbf | 4073 | #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections |
0ac8d2ca | 4074 | #define elf_backend_fake_sections elf_i386_fake_sections |
dd5724d5 AM |
4075 | #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections |
4076 | #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol | |
4077 | #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook | |
4078 | #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook | |
c5fccbec DJ |
4079 | #define elf_backend_grok_prstatus elf_i386_grok_prstatus |
4080 | #define elf_backend_grok_psinfo elf_i386_grok_psinfo | |
db6751f2 | 4081 | #define elf_backend_reloc_type_class elf_i386_reloc_type_class |
0ac8d2ca AM |
4082 | #define elf_backend_relocate_section elf_i386_relocate_section |
4083 | #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections | |
67a4f2b7 | 4084 | #define elf_backend_always_size_sections elf_i386_always_size_sections |
74541ad4 AM |
4085 | #define elf_backend_omit_section_dynsym \ |
4086 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
4c45e5c9 | 4087 | #define elf_backend_plt_sym_val elf_i386_plt_sym_val |
fdc90cb4 | 4088 | #define elf_backend_hash_symbol elf_i386_hash_symbol |
dd5724d5 | 4089 | |
252b5132 | 4090 | #include "elf32-target.h" |
2bc3c89a AM |
4091 | |
4092 | /* FreeBSD support. */ | |
4093 | ||
4094 | #undef TARGET_LITTLE_SYM | |
4095 | #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec | |
4096 | #undef TARGET_LITTLE_NAME | |
4097 | #define TARGET_LITTLE_NAME "elf32-i386-freebsd" | |
d1036acb L |
4098 | #undef ELF_OSABI |
4099 | #define ELF_OSABI ELFOSABI_FREEBSD | |
2bc3c89a AM |
4100 | |
4101 | /* The kernel recognizes executables as valid only if they carry a | |
4102 | "FreeBSD" label in the ELF header. So we put this label on all | |
4103 | executables and (for simplicity) also all other object files. */ | |
4104 | ||
2bc3c89a | 4105 | static void |
55fd94b0 AM |
4106 | elf_i386_post_process_headers (bfd *abfd, |
4107 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
2bc3c89a AM |
4108 | { |
4109 | Elf_Internal_Ehdr *i_ehdrp; | |
4110 | ||
4111 | i_ehdrp = elf_elfheader (abfd); | |
4112 | ||
4113 | /* Put an ABI label supported by FreeBSD >= 4.1. */ | |
d1036acb | 4114 | i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi; |
2bc3c89a AM |
4115 | #ifdef OLD_FREEBSD_ABI_LABEL |
4116 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
4117 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
caf47ea6 | 4118 | #endif |
2bc3c89a AM |
4119 | } |
4120 | ||
4121 | #undef elf_backend_post_process_headers | |
571fe01f NC |
4122 | #define elf_backend_post_process_headers elf_i386_post_process_headers |
4123 | #undef elf32_bed | |
4124 | #define elf32_bed elf32_i386_fbsd_bed | |
2bc3c89a AM |
4125 | |
4126 | #include "elf32-target.h" | |
eac338cf PB |
4127 | |
4128 | /* VxWorks support. */ | |
4129 | ||
4130 | #undef TARGET_LITTLE_SYM | |
4131 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec | |
4132 | #undef TARGET_LITTLE_NAME | |
4133 | #define TARGET_LITTLE_NAME "elf32-i386-vxworks" | |
d1036acb | 4134 | #undef ELF_OSABI |
eac338cf PB |
4135 | |
4136 | /* Like elf_i386_link_hash_table_create but with tweaks for VxWorks. */ | |
4137 | ||
4138 | static struct bfd_link_hash_table * | |
4139 | elf_i386_vxworks_link_hash_table_create (bfd *abfd) | |
4140 | { | |
4141 | struct bfd_link_hash_table *ret; | |
4142 | struct elf_i386_link_hash_table *htab; | |
4143 | ||
4144 | ret = elf_i386_link_hash_table_create (abfd); | |
4145 | if (ret) | |
4146 | { | |
4147 | htab = (struct elf_i386_link_hash_table *) ret; | |
4148 | htab->is_vxworks = 1; | |
4149 | htab->plt0_pad_byte = 0x90; | |
4150 | } | |
4151 | ||
4152 | return ret; | |
4153 | } | |
4154 | ||
4155 | ||
13285a1b AM |
4156 | #undef elf_backend_relocs_compatible |
4157 | #undef elf_backend_post_process_headers | |
eac338cf PB |
4158 | #undef bfd_elf32_bfd_link_hash_table_create |
4159 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4160 | elf_i386_vxworks_link_hash_table_create | |
4161 | #undef elf_backend_add_symbol_hook | |
4162 | #define elf_backend_add_symbol_hook \ | |
4163 | elf_vxworks_add_symbol_hook | |
4164 | #undef elf_backend_link_output_symbol_hook | |
4165 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 4166 | elf_vxworks_link_output_symbol_hook |
eac338cf PB |
4167 | #undef elf_backend_emit_relocs |
4168 | #define elf_backend_emit_relocs elf_vxworks_emit_relocs | |
4169 | #undef elf_backend_final_write_processing | |
4170 | #define elf_backend_final_write_processing \ | |
4171 | elf_vxworks_final_write_processing | |
4172 | ||
4173 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
4174 | define it. */ | |
4175 | #undef elf_backend_want_plt_sym | |
4176 | #define elf_backend_want_plt_sym 1 | |
4177 | ||
4178 | #undef elf32_bed | |
4179 | #define elf32_bed elf32_i386_vxworks_bed | |
4180 | ||
4181 | #include "elf32-target.h" |