Commit | Line | Data |
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252b5132 | 1 | /* Intel 80386/80486-specific support for 32-bit ELF |
4b95cf5c | 2 | Copyright (C) 1993-2014 Free Software Foundation, Inc. |
252b5132 | 3 | |
571fe01f | 4 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 5 | |
571fe01f NC |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 8 | the Free Software Foundation; either version 3 of the License, or |
571fe01f | 9 | (at your option) any later version. |
252b5132 | 10 | |
571fe01f NC |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
252b5132 | 15 | |
571fe01f NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | MA 02110-1301, USA. */ | |
252b5132 | 20 | |
252b5132 | 21 | #include "sysdep.h" |
3db64b00 | 22 | #include "bfd.h" |
252b5132 RH |
23 | #include "bfdlink.h" |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
5a68afcf | 26 | #include "elf-nacl.h" |
eac338cf | 27 | #include "elf-vxworks.h" |
142411ca | 28 | #include "bfd_stdint.h" |
c25bc9fc L |
29 | #include "objalloc.h" |
30 | #include "hashtab.h" | |
e41b3a13 | 31 | #include "dwarf2.h" |
252b5132 | 32 | |
55fd94b0 AM |
33 | /* 386 uses REL relocations instead of RELA. */ |
34 | #define USE_REL 1 | |
252b5132 RH |
35 | |
36 | #include "elf/i386.h" | |
37 | ||
38 | static reloc_howto_type elf_howto_table[]= | |
39 | { | |
b34976b6 | 40 | HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield, |
1b452ec6 | 41 | bfd_elf_generic_reloc, "R_386_NONE", |
b34976b6 AM |
42 | TRUE, 0x00000000, 0x00000000, FALSE), |
43 | HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 44 | bfd_elf_generic_reloc, "R_386_32", |
b34976b6 AM |
45 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
46 | HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 47 | bfd_elf_generic_reloc, "R_386_PC32", |
b34976b6 AM |
48 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
49 | HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 50 | bfd_elf_generic_reloc, "R_386_GOT32", |
b34976b6 AM |
51 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
52 | HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 53 | bfd_elf_generic_reloc, "R_386_PLT32", |
b34976b6 AM |
54 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
55 | HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 56 | bfd_elf_generic_reloc, "R_386_COPY", |
b34976b6 AM |
57 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
58 | HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 59 | bfd_elf_generic_reloc, "R_386_GLOB_DAT", |
b34976b6 AM |
60 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
61 | HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 62 | bfd_elf_generic_reloc, "R_386_JUMP_SLOT", |
b34976b6 AM |
63 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
64 | HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 65 | bfd_elf_generic_reloc, "R_386_RELATIVE", |
b34976b6 AM |
66 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
67 | HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 68 | bfd_elf_generic_reloc, "R_386_GOTOFF", |
b34976b6 AM |
69 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
70 | HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 71 | bfd_elf_generic_reloc, "R_386_GOTPC", |
b34976b6 | 72 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
1b452ec6 | 73 | |
dc47f327 AM |
74 | /* We have a gap in the reloc numbers here. |
75 | R_386_standard counts the number up to this point, and | |
76 | R_386_ext_offset is the value to subtract from a reloc type of | |
77 | R_386_16 thru R_386_PC8 to form an index into this table. */ | |
55fd94b0 AM |
78 | #define R_386_standard (R_386_GOTPC + 1) |
79 | #define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard) | |
1b452ec6 | 80 | |
37e55690 | 81 | /* These relocs are a GNU extension. */ |
b34976b6 | 82 | HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
37e55690 | 83 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF", |
b34976b6 AM |
84 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
85 | HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 86 | bfd_elf_generic_reloc, "R_386_TLS_IE", |
b34976b6 AM |
87 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
88 | HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 89 | bfd_elf_generic_reloc, "R_386_TLS_GOTIE", |
b34976b6 AM |
90 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
91 | HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 92 | bfd_elf_generic_reloc, "R_386_TLS_LE", |
b34976b6 AM |
93 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
94 | HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 95 | bfd_elf_generic_reloc, "R_386_TLS_GD", |
b34976b6 AM |
96 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
97 | HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 98 | bfd_elf_generic_reloc, "R_386_TLS_LDM", |
b34976b6 AM |
99 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
100 | HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 101 | bfd_elf_generic_reloc, "R_386_16", |
b34976b6 | 102 | TRUE, 0xffff, 0xffff, FALSE), |
b0360d8c | 103 | HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, |
1b452ec6 | 104 | bfd_elf_generic_reloc, "R_386_PC16", |
b34976b6 AM |
105 | TRUE, 0xffff, 0xffff, TRUE), |
106 | HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 107 | bfd_elf_generic_reloc, "R_386_8", |
b34976b6 AM |
108 | TRUE, 0xff, 0xff, FALSE), |
109 | HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
1b452ec6 | 110 | bfd_elf_generic_reloc, "R_386_PC8", |
b34976b6 | 111 | TRUE, 0xff, 0xff, TRUE), |
dc47f327 | 112 | |
55fd94b0 AM |
113 | #define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset) |
114 | #define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext) | |
13ae64f3 | 115 | /* These are common with Solaris TLS implementation. */ |
b34976b6 | 116 | HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
13ae64f3 | 117 | bfd_elf_generic_reloc, "R_386_TLS_LDO_32", |
b34976b6 AM |
118 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
119 | HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 120 | bfd_elf_generic_reloc, "R_386_TLS_IE_32", |
b34976b6 AM |
121 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
122 | HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 123 | bfd_elf_generic_reloc, "R_386_TLS_LE_32", |
b34976b6 AM |
124 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
125 | HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 126 | bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32", |
b34976b6 AM |
127 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
128 | HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 129 | bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32", |
b34976b6 AM |
130 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
131 | HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 132 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF32", |
b34976b6 | 133 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
1788fc08 L |
134 | HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned, |
135 | bfd_elf_generic_reloc, "R_386_SIZE32", | |
136 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
67a4f2b7 AO |
137 | HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
138 | bfd_elf_generic_reloc, "R_386_TLS_GOTDESC", | |
139 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
140 | HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
141 | bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL", | |
142 | FALSE, 0, 0, FALSE), | |
143 | HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
144 | bfd_elf_generic_reloc, "R_386_TLS_DESC", | |
145 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
cbe950e9 L |
146 | HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
147 | bfd_elf_generic_reloc, "R_386_IRELATIVE", | |
148 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
13ae64f3 JJ |
149 | |
150 | /* Another gap. */ | |
cbe950e9 L |
151 | #define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset) |
152 | #define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative) | |
252b5132 RH |
153 | |
154 | /* GNU extension to record C++ vtable hierarchy. */ | |
252b5132 RH |
155 | HOWTO (R_386_GNU_VTINHERIT, /* type */ |
156 | 0, /* rightshift */ | |
157 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
158 | 0, /* bitsize */ | |
b34976b6 | 159 | FALSE, /* pc_relative */ |
252b5132 RH |
160 | 0, /* bitpos */ |
161 | complain_overflow_dont, /* complain_on_overflow */ | |
162 | NULL, /* special_function */ | |
163 | "R_386_GNU_VTINHERIT", /* name */ | |
b34976b6 | 164 | FALSE, /* partial_inplace */ |
252b5132 RH |
165 | 0, /* src_mask */ |
166 | 0, /* dst_mask */ | |
b34976b6 | 167 | FALSE), /* pcrel_offset */ |
252b5132 RH |
168 | |
169 | /* GNU extension to record C++ vtable member usage. */ | |
252b5132 RH |
170 | HOWTO (R_386_GNU_VTENTRY, /* type */ |
171 | 0, /* rightshift */ | |
172 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
173 | 0, /* bitsize */ | |
b34976b6 | 174 | FALSE, /* pc_relative */ |
252b5132 RH |
175 | 0, /* bitpos */ |
176 | complain_overflow_dont, /* complain_on_overflow */ | |
177 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
178 | "R_386_GNU_VTENTRY", /* name */ | |
b34976b6 | 179 | FALSE, /* partial_inplace */ |
252b5132 RH |
180 | 0, /* src_mask */ |
181 | 0, /* dst_mask */ | |
b34976b6 | 182 | FALSE) /* pcrel_offset */ |
dc47f327 | 183 | |
55fd94b0 | 184 | #define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset) |
dc47f327 AM |
185 | |
186 | }; | |
187 | ||
252b5132 | 188 | #ifdef DEBUG_GEN_RELOC |
55fd94b0 AM |
189 | #define TRACE(str) \ |
190 | fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str) | |
252b5132 RH |
191 | #else |
192 | #define TRACE(str) | |
193 | #endif | |
194 | ||
195 | static reloc_howto_type * | |
55fd94b0 AM |
196 | elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
197 | bfd_reloc_code_real_type code) | |
252b5132 RH |
198 | { |
199 | switch (code) | |
200 | { | |
201 | case BFD_RELOC_NONE: | |
202 | TRACE ("BFD_RELOC_NONE"); | |
55fd94b0 | 203 | return &elf_howto_table[R_386_NONE]; |
252b5132 RH |
204 | |
205 | case BFD_RELOC_32: | |
206 | TRACE ("BFD_RELOC_32"); | |
55fd94b0 | 207 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
208 | |
209 | case BFD_RELOC_CTOR: | |
210 | TRACE ("BFD_RELOC_CTOR"); | |
55fd94b0 | 211 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
212 | |
213 | case BFD_RELOC_32_PCREL: | |
214 | TRACE ("BFD_RELOC_PC32"); | |
55fd94b0 | 215 | return &elf_howto_table[R_386_PC32]; |
252b5132 RH |
216 | |
217 | case BFD_RELOC_386_GOT32: | |
218 | TRACE ("BFD_RELOC_386_GOT32"); | |
55fd94b0 | 219 | return &elf_howto_table[R_386_GOT32]; |
252b5132 RH |
220 | |
221 | case BFD_RELOC_386_PLT32: | |
222 | TRACE ("BFD_RELOC_386_PLT32"); | |
55fd94b0 | 223 | return &elf_howto_table[R_386_PLT32]; |
252b5132 RH |
224 | |
225 | case BFD_RELOC_386_COPY: | |
226 | TRACE ("BFD_RELOC_386_COPY"); | |
55fd94b0 | 227 | return &elf_howto_table[R_386_COPY]; |
252b5132 RH |
228 | |
229 | case BFD_RELOC_386_GLOB_DAT: | |
230 | TRACE ("BFD_RELOC_386_GLOB_DAT"); | |
55fd94b0 | 231 | return &elf_howto_table[R_386_GLOB_DAT]; |
252b5132 RH |
232 | |
233 | case BFD_RELOC_386_JUMP_SLOT: | |
234 | TRACE ("BFD_RELOC_386_JUMP_SLOT"); | |
55fd94b0 | 235 | return &elf_howto_table[R_386_JUMP_SLOT]; |
252b5132 RH |
236 | |
237 | case BFD_RELOC_386_RELATIVE: | |
238 | TRACE ("BFD_RELOC_386_RELATIVE"); | |
55fd94b0 | 239 | return &elf_howto_table[R_386_RELATIVE]; |
252b5132 RH |
240 | |
241 | case BFD_RELOC_386_GOTOFF: | |
242 | TRACE ("BFD_RELOC_386_GOTOFF"); | |
55fd94b0 | 243 | return &elf_howto_table[R_386_GOTOFF]; |
252b5132 RH |
244 | |
245 | case BFD_RELOC_386_GOTPC: | |
246 | TRACE ("BFD_RELOC_386_GOTPC"); | |
55fd94b0 | 247 | return &elf_howto_table[R_386_GOTPC]; |
252b5132 | 248 | |
37e55690 JJ |
249 | /* These relocs are a GNU extension. */ |
250 | case BFD_RELOC_386_TLS_TPOFF: | |
251 | TRACE ("BFD_RELOC_386_TLS_TPOFF"); | |
55fd94b0 | 252 | return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset]; |
37e55690 JJ |
253 | |
254 | case BFD_RELOC_386_TLS_IE: | |
255 | TRACE ("BFD_RELOC_386_TLS_IE"); | |
55fd94b0 | 256 | return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset]; |
37e55690 JJ |
257 | |
258 | case BFD_RELOC_386_TLS_GOTIE: | |
259 | TRACE ("BFD_RELOC_386_TLS_GOTIE"); | |
55fd94b0 | 260 | return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset]; |
37e55690 | 261 | |
13ae64f3 JJ |
262 | case BFD_RELOC_386_TLS_LE: |
263 | TRACE ("BFD_RELOC_386_TLS_LE"); | |
55fd94b0 | 264 | return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset]; |
13ae64f3 JJ |
265 | |
266 | case BFD_RELOC_386_TLS_GD: | |
267 | TRACE ("BFD_RELOC_386_TLS_GD"); | |
55fd94b0 | 268 | return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset]; |
13ae64f3 JJ |
269 | |
270 | case BFD_RELOC_386_TLS_LDM: | |
271 | TRACE ("BFD_RELOC_386_TLS_LDM"); | |
55fd94b0 | 272 | return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset]; |
13ae64f3 | 273 | |
252b5132 RH |
274 | case BFD_RELOC_16: |
275 | TRACE ("BFD_RELOC_16"); | |
55fd94b0 | 276 | return &elf_howto_table[R_386_16 - R_386_ext_offset]; |
252b5132 RH |
277 | |
278 | case BFD_RELOC_16_PCREL: | |
279 | TRACE ("BFD_RELOC_16_PCREL"); | |
55fd94b0 | 280 | return &elf_howto_table[R_386_PC16 - R_386_ext_offset]; |
252b5132 RH |
281 | |
282 | case BFD_RELOC_8: | |
283 | TRACE ("BFD_RELOC_8"); | |
55fd94b0 | 284 | return &elf_howto_table[R_386_8 - R_386_ext_offset]; |
252b5132 RH |
285 | |
286 | case BFD_RELOC_8_PCREL: | |
287 | TRACE ("BFD_RELOC_8_PCREL"); | |
55fd94b0 | 288 | return &elf_howto_table[R_386_PC8 - R_386_ext_offset]; |
252b5132 | 289 | |
13ae64f3 JJ |
290 | /* Common with Sun TLS implementation. */ |
291 | case BFD_RELOC_386_TLS_LDO_32: | |
292 | TRACE ("BFD_RELOC_386_TLS_LDO_32"); | |
55fd94b0 | 293 | return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset]; |
13ae64f3 JJ |
294 | |
295 | case BFD_RELOC_386_TLS_IE_32: | |
296 | TRACE ("BFD_RELOC_386_TLS_IE_32"); | |
55fd94b0 | 297 | return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
298 | |
299 | case BFD_RELOC_386_TLS_LE_32: | |
300 | TRACE ("BFD_RELOC_386_TLS_LE_32"); | |
55fd94b0 | 301 | return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
302 | |
303 | case BFD_RELOC_386_TLS_DTPMOD32: | |
304 | TRACE ("BFD_RELOC_386_TLS_DTPMOD32"); | |
55fd94b0 | 305 | return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset]; |
13ae64f3 JJ |
306 | |
307 | case BFD_RELOC_386_TLS_DTPOFF32: | |
308 | TRACE ("BFD_RELOC_386_TLS_DTPOFF32"); | |
55fd94b0 | 309 | return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset]; |
13ae64f3 JJ |
310 | |
311 | case BFD_RELOC_386_TLS_TPOFF32: | |
312 | TRACE ("BFD_RELOC_386_TLS_TPOFF32"); | |
55fd94b0 | 313 | return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset]; |
13ae64f3 | 314 | |
1788fc08 L |
315 | case BFD_RELOC_SIZE32: |
316 | TRACE ("BFD_RELOC_SIZE32"); | |
317 | return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset]; | |
318 | ||
67a4f2b7 AO |
319 | case BFD_RELOC_386_TLS_GOTDESC: |
320 | TRACE ("BFD_RELOC_386_TLS_GOTDESC"); | |
321 | return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset]; | |
322 | ||
323 | case BFD_RELOC_386_TLS_DESC_CALL: | |
324 | TRACE ("BFD_RELOC_386_TLS_DESC_CALL"); | |
325 | return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset]; | |
326 | ||
327 | case BFD_RELOC_386_TLS_DESC: | |
328 | TRACE ("BFD_RELOC_386_TLS_DESC"); | |
329 | return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset]; | |
330 | ||
cbe950e9 L |
331 | case BFD_RELOC_386_IRELATIVE: |
332 | TRACE ("BFD_RELOC_386_IRELATIVE"); | |
2a750708 | 333 | return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset]; |
cbe950e9 | 334 | |
252b5132 RH |
335 | case BFD_RELOC_VTABLE_INHERIT: |
336 | TRACE ("BFD_RELOC_VTABLE_INHERIT"); | |
55fd94b0 | 337 | return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset]; |
252b5132 RH |
338 | |
339 | case BFD_RELOC_VTABLE_ENTRY: | |
340 | TRACE ("BFD_RELOC_VTABLE_ENTRY"); | |
55fd94b0 | 341 | return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset]; |
252b5132 RH |
342 | |
343 | default: | |
344 | break; | |
345 | } | |
346 | ||
347 | TRACE ("Unknown"); | |
348 | return 0; | |
349 | } | |
350 | ||
157090f7 AM |
351 | static reloc_howto_type * |
352 | elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
353 | const char *r_name) | |
354 | { | |
355 | unsigned int i; | |
356 | ||
357 | for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++) | |
358 | if (elf_howto_table[i].name != NULL | |
359 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
360 | return &elf_howto_table[i]; | |
361 | ||
362 | return NULL; | |
363 | } | |
364 | ||
142411ca L |
365 | static reloc_howto_type * |
366 | elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type) | |
252b5132 | 367 | { |
dc47f327 AM |
368 | unsigned int indx; |
369 | ||
370 | if ((indx = r_type) >= R_386_standard | |
371 | && ((indx = r_type - R_386_ext_offset) - R_386_standard | |
372 | >= R_386_ext - R_386_standard) | |
13ae64f3 | 373 | && ((indx = r_type - R_386_tls_offset) - R_386_ext |
cbe950e9 L |
374 | >= R_386_irelative - R_386_ext) |
375 | && ((indx = r_type - R_386_vt_offset) - R_386_irelative | |
376 | >= R_386_vt - R_386_irelative)) | |
252b5132 | 377 | { |
d003868e AM |
378 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), |
379 | abfd, (int) r_type); | |
55fd94b0 | 380 | indx = R_386_NONE; |
252b5132 | 381 | } |
142411ca L |
382 | BFD_ASSERT (elf_howto_table [indx].type == r_type); |
383 | return &elf_howto_table[indx]; | |
384 | } | |
385 | ||
386 | static void | |
387 | elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, | |
388 | arelent *cache_ptr, | |
389 | Elf_Internal_Rela *dst) | |
390 | { | |
391 | unsigned int r_type = ELF32_R_TYPE (dst->r_info); | |
392 | cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type); | |
252b5132 RH |
393 | } |
394 | ||
395 | /* Return whether a symbol name implies a local label. The UnixWare | |
396 | 2.1 cc generates temporary symbols that start with .X, so we | |
397 | recognize them here. FIXME: do other SVR4 compilers also use .X?. | |
398 | If so, we should move the .X recognition into | |
399 | _bfd_elf_is_local_label_name. */ | |
400 | ||
b34976b6 | 401 | static bfd_boolean |
55fd94b0 | 402 | elf_i386_is_local_label_name (bfd *abfd, const char *name) |
252b5132 RH |
403 | { |
404 | if (name[0] == '.' && name[1] == 'X') | |
b34976b6 | 405 | return TRUE; |
252b5132 RH |
406 | |
407 | return _bfd_elf_is_local_label_name (abfd, name); | |
408 | } | |
409 | \f | |
38701953 | 410 | /* Support for core dump NOTE sections. */ |
61adc1a4 | 411 | |
b34976b6 | 412 | static bfd_boolean |
55fd94b0 | 413 | elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
38701953 AM |
414 | { |
415 | int offset; | |
eea6121a | 416 | size_t size; |
38701953 | 417 | |
61adc1a4 | 418 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 419 | { |
61adc1a4 NC |
420 | int pr_version = bfd_get_32 (abfd, note->descdata); |
421 | ||
422 | if (pr_version != 1) | |
423 | return FALSE; | |
424 | ||
425 | /* pr_cursig */ | |
228e534f | 426 | elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20); |
61adc1a4 NC |
427 | |
428 | /* pr_pid */ | |
228e534f | 429 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
61adc1a4 NC |
430 | |
431 | /* pr_reg */ | |
432 | offset = 28; | |
eea6121a | 433 | size = bfd_get_32 (abfd, note->descdata + 8); |
61adc1a4 NC |
434 | } |
435 | else | |
436 | { | |
437 | switch (note->descsz) | |
438 | { | |
439 | default: | |
440 | return FALSE; | |
38701953 | 441 | |
61adc1a4 NC |
442 | case 144: /* Linux/i386 */ |
443 | /* pr_cursig */ | |
228e534f | 444 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
38701953 | 445 | |
61adc1a4 | 446 | /* pr_pid */ |
228e534f | 447 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
38701953 | 448 | |
61adc1a4 NC |
449 | /* pr_reg */ |
450 | offset = 72; | |
eea6121a | 451 | size = 68; |
38701953 | 452 | |
61adc1a4 NC |
453 | break; |
454 | } | |
38701953 AM |
455 | } |
456 | ||
457 | /* Make a ".reg/999" section. */ | |
458 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 459 | size, note->descpos + offset); |
38701953 AM |
460 | } |
461 | ||
b34976b6 | 462 | static bfd_boolean |
55fd94b0 | 463 | elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
38701953 | 464 | { |
61adc1a4 | 465 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 466 | { |
61adc1a4 NC |
467 | int pr_version = bfd_get_32 (abfd, note->descdata); |
468 | ||
469 | if (pr_version != 1) | |
b34976b6 | 470 | return FALSE; |
38701953 | 471 | |
228e534f | 472 | elf_tdata (abfd)->core->program |
61adc1a4 | 473 | = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17); |
228e534f | 474 | elf_tdata (abfd)->core->command |
61adc1a4 NC |
475 | = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81); |
476 | } | |
477 | else | |
478 | { | |
479 | switch (note->descsz) | |
480 | { | |
481 | default: | |
482 | return FALSE; | |
483 | ||
484 | case 124: /* Linux/i386 elf_prpsinfo. */ | |
228e534f | 485 | elf_tdata (abfd)->core->pid |
261b8d08 | 486 | = bfd_get_32 (abfd, note->descdata + 12); |
228e534f | 487 | elf_tdata (abfd)->core->program |
61adc1a4 | 488 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 489 | elf_tdata (abfd)->core->command |
61adc1a4 NC |
490 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
491 | } | |
38701953 AM |
492 | } |
493 | ||
494 | /* Note that for some reason, a spurious space is tacked | |
495 | onto the end of the args in some (at least one anyway) | |
496 | implementations, so strip it off if it exists. */ | |
38701953 | 497 | { |
228e534f | 498 | char *command = elf_tdata (abfd)->core->command; |
38701953 AM |
499 | int n = strlen (command); |
500 | ||
501 | if (0 < n && command[n - 1] == ' ') | |
502 | command[n - 1] = '\0'; | |
503 | } | |
504 | ||
b34976b6 | 505 | return TRUE; |
38701953 AM |
506 | } |
507 | \f | |
508 | /* Functions for the i386 ELF linker. | |
509 | ||
510 | In order to gain some understanding of code in this file without | |
511 | knowing all the intricate details of the linker, note the | |
512 | following: | |
513 | ||
514 | Functions named elf_i386_* are called by external routines, other | |
515 | functions are only called locally. elf_i386_* functions appear | |
516 | in this file more or less in the order in which they are called | |
517 | from external routines. eg. elf_i386_check_relocs is called | |
518 | early in the link process, elf_i386_finish_dynamic_sections is | |
519 | one of the last functions. */ | |
520 | ||
252b5132 RH |
521 | |
522 | /* The name of the dynamic interpreter. This is put in the .interp | |
523 | section. */ | |
524 | ||
525 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
526 | ||
a23b6845 AM |
527 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
528 | copying dynamic variables from a shared lib into an app's dynbss | |
529 | section, and instead use a dynamic relocation to point into the | |
530 | shared lib. */ | |
531 | #define ELIMINATE_COPY_RELOCS 1 | |
532 | ||
252b5132 RH |
533 | /* The size in bytes of an entry in the procedure linkage table. */ |
534 | ||
535 | #define PLT_ENTRY_SIZE 16 | |
536 | ||
537 | /* The first entry in an absolute procedure linkage table looks like | |
eac338cf PB |
538 | this. See the SVR4 ABI i386 supplement to see how this works. |
539 | Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */ | |
252b5132 | 540 | |
eac338cf | 541 | static const bfd_byte elf_i386_plt0_entry[12] = |
252b5132 RH |
542 | { |
543 | 0xff, 0x35, /* pushl contents of address */ | |
544 | 0, 0, 0, 0, /* replaced with address of .got + 4. */ | |
545 | 0xff, 0x25, /* jmp indirect */ | |
eac338cf | 546 | 0, 0, 0, 0 /* replaced with address of .got + 8. */ |
252b5132 RH |
547 | }; |
548 | ||
549 | /* Subsequent entries in an absolute procedure linkage table look like | |
550 | this. */ | |
551 | ||
552 | static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] = | |
553 | { | |
554 | 0xff, 0x25, /* jmp indirect */ | |
555 | 0, 0, 0, 0, /* replaced with address of this symbol in .got. */ | |
556 | 0x68, /* pushl immediate */ | |
557 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
558 | 0xe9, /* jmp relative */ | |
559 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
560 | }; | |
561 | ||
eac338cf PB |
562 | /* The first entry in a PIC procedure linkage table look like this. |
563 | Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */ | |
252b5132 | 564 | |
eac338cf | 565 | static const bfd_byte elf_i386_pic_plt0_entry[12] = |
252b5132 RH |
566 | { |
567 | 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */ | |
eac338cf | 568 | 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */ |
252b5132 RH |
569 | }; |
570 | ||
571 | /* Subsequent entries in a PIC procedure linkage table look like this. */ | |
572 | ||
573 | static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] = | |
574 | { | |
575 | 0xff, 0xa3, /* jmp *offset(%ebx) */ | |
576 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
577 | 0x68, /* pushl immediate */ | |
578 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
579 | 0xe9, /* jmp relative */ | |
580 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
581 | }; | |
582 | ||
e41b3a13 JJ |
583 | /* .eh_frame covering the .plt section. */ |
584 | ||
585 | static const bfd_byte elf_i386_eh_frame_plt[] = | |
586 | { | |
587 | #define PLT_CIE_LENGTH 20 | |
588 | #define PLT_FDE_LENGTH 36 | |
589 | #define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8 | |
590 | #define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12 | |
591 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
592 | 0, 0, 0, 0, /* CIE ID */ | |
593 | 1, /* CIE version */ | |
594 | 'z', 'R', 0, /* Augmentation string */ | |
595 | 1, /* Code alignment factor */ | |
596 | 0x7c, /* Data alignment factor */ | |
597 | 8, /* Return address column */ | |
598 | 1, /* Augmentation size */ | |
599 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
600 | DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */ | |
601 | DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */ | |
602 | DW_CFA_nop, DW_CFA_nop, | |
603 | ||
604 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
605 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
606 | 0, 0, 0, 0, /* R_386_PC32 .plt goes here */ | |
607 | 0, 0, 0, 0, /* .plt size goes here */ | |
608 | 0, /* Augmentation size */ | |
609 | DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */ | |
610 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
611 | DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */ | |
612 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
613 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
614 | 11, /* Block length */ | |
615 | DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */ | |
616 | DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */ | |
617 | DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge, | |
28ede8be | 618 | DW_OP_lit2, DW_OP_shl, DW_OP_plus, |
e41b3a13 JJ |
619 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop |
620 | }; | |
621 | ||
25e762b9 RM |
622 | struct elf_i386_plt_layout |
623 | { | |
624 | /* The first entry in an absolute procedure linkage table looks like this. */ | |
625 | const bfd_byte *plt0_entry; | |
626 | unsigned int plt0_entry_size; | |
627 | ||
628 | /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */ | |
629 | unsigned int plt0_got1_offset; | |
630 | unsigned int plt0_got2_offset; | |
631 | ||
632 | /* Later entries in an absolute procedure linkage table look like this. */ | |
633 | const bfd_byte *plt_entry; | |
634 | unsigned int plt_entry_size; | |
635 | ||
636 | /* Offsets into plt_entry that are to be replaced with... */ | |
637 | unsigned int plt_got_offset; /* ... address of this symbol in .got. */ | |
638 | unsigned int plt_reloc_offset; /* ... offset into relocation table. */ | |
639 | unsigned int plt_plt_offset; /* ... offset to start of .plt. */ | |
640 | ||
641 | /* Offset into plt_entry where the initial value of the GOT entry points. */ | |
642 | unsigned int plt_lazy_offset; | |
643 | ||
644 | /* The first entry in a PIC procedure linkage table looks like this. */ | |
645 | const bfd_byte *pic_plt0_entry; | |
646 | ||
647 | /* Subsequent entries in a PIC procedure linkage table look like this. */ | |
648 | const bfd_byte *pic_plt_entry; | |
649 | ||
650 | /* .eh_frame covering the .plt section. */ | |
651 | const bfd_byte *eh_frame_plt; | |
652 | unsigned int eh_frame_plt_size; | |
653 | }; | |
654 | ||
655 | #define GET_PLT_ENTRY_SIZE(abfd) \ | |
656 | get_elf_i386_backend_data (abfd)->plt->plt_entry_size | |
657 | ||
658 | /* These are the standard parameters. */ | |
659 | static const struct elf_i386_plt_layout elf_i386_plt = | |
660 | { | |
661 | elf_i386_plt0_entry, /* plt0_entry */ | |
662 | sizeof (elf_i386_plt0_entry), /* plt0_entry_size */ | |
663 | 2, /* plt0_got1_offset */ | |
664 | 8, /* plt0_got2_offset */ | |
665 | elf_i386_plt_entry, /* plt_entry */ | |
666 | PLT_ENTRY_SIZE, /* plt_entry_size */ | |
667 | 2, /* plt_got_offset */ | |
668 | 7, /* plt_reloc_offset */ | |
669 | 12, /* plt_plt_offset */ | |
670 | 6, /* plt_lazy_offset */ | |
671 | elf_i386_pic_plt0_entry, /* pic_plt0_entry */ | |
672 | elf_i386_pic_plt_entry, /* pic_plt_entry */ | |
673 | elf_i386_eh_frame_plt, /* eh_frame_plt */ | |
674 | sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */ | |
675 | }; | |
676 | \f | |
677 | ||
eac338cf PB |
678 | /* On VxWorks, the .rel.plt.unloaded section has absolute relocations |
679 | for the PLTResolve stub and then for each PLT entry. */ | |
680 | #define PLTRESOLVE_RELOCS_SHLIB 0 | |
681 | #define PLTRESOLVE_RELOCS 2 | |
682 | #define PLT_NON_JUMP_SLOT_RELOCS 2 | |
683 | ||
23209a78 RM |
684 | /* Architecture-specific backend data for i386. */ |
685 | ||
686 | struct elf_i386_backend_data | |
687 | { | |
25e762b9 RM |
688 | /* Parameters describing PLT generation. */ |
689 | const struct elf_i386_plt_layout *plt; | |
690 | ||
23209a78 RM |
691 | /* Value used to fill the unused bytes of the first PLT entry. */ |
692 | bfd_byte plt0_pad_byte; | |
693 | ||
694 | /* True if the target system is VxWorks. */ | |
695 | int is_vxworks; | |
696 | }; | |
697 | ||
698 | #define get_elf_i386_backend_data(abfd) \ | |
699 | ((const struct elf_i386_backend_data *) \ | |
700 | get_elf_backend_data (abfd)->arch_data) | |
701 | ||
702 | /* These are the standard parameters. */ | |
703 | static const struct elf_i386_backend_data elf_i386_arch_bed = | |
704 | { | |
25e762b9 | 705 | &elf_i386_plt, /* plt */ |
23209a78 RM |
706 | 0, /* plt0_pad_byte */ |
707 | 0, /* is_vxworks */ | |
708 | }; | |
709 | ||
710 | #define elf_backend_arch_data &elf_i386_arch_bed | |
711 | ||
252b5132 RH |
712 | /* i386 ELF linker hash entry. */ |
713 | ||
714 | struct elf_i386_link_hash_entry | |
715 | { | |
ebe50bae | 716 | struct elf_link_hash_entry elf; |
252b5132 | 717 | |
0c715baa | 718 | /* Track dynamic relocs copied for this symbol. */ |
e03a8ed8 | 719 | struct elf_dyn_relocs *dyn_relocs; |
13ae64f3 | 720 | |
37e55690 JJ |
721 | #define GOT_UNKNOWN 0 |
722 | #define GOT_NORMAL 1 | |
723 | #define GOT_TLS_GD 2 | |
724 | #define GOT_TLS_IE 4 | |
725 | #define GOT_TLS_IE_POS 5 | |
726 | #define GOT_TLS_IE_NEG 6 | |
727 | #define GOT_TLS_IE_BOTH 7 | |
67a4f2b7 AO |
728 | #define GOT_TLS_GDESC 8 |
729 | #define GOT_TLS_GD_BOTH_P(type) \ | |
730 | ((type) == (GOT_TLS_GD | GOT_TLS_GDESC)) | |
731 | #define GOT_TLS_GD_P(type) \ | |
732 | ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type)) | |
733 | #define GOT_TLS_GDESC_P(type) \ | |
734 | ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type)) | |
735 | #define GOT_TLS_GD_ANY_P(type) \ | |
736 | (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type)) | |
37e55690 | 737 | unsigned char tls_type; |
67a4f2b7 AO |
738 | |
739 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, | |
740 | starting at the end of the jump table. */ | |
741 | bfd_vma tlsdesc_got; | |
13ae64f3 JJ |
742 | }; |
743 | ||
744 | #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent)) | |
745 | ||
746 | struct elf_i386_obj_tdata | |
747 | { | |
748 | struct elf_obj_tdata root; | |
749 | ||
750 | /* tls_type for each local got entry. */ | |
751 | char *local_got_tls_type; | |
67a4f2b7 AO |
752 | |
753 | /* GOTPLT entries for TLS descriptors. */ | |
754 | bfd_vma *local_tlsdesc_gotent; | |
252b5132 RH |
755 | }; |
756 | ||
13ae64f3 JJ |
757 | #define elf_i386_tdata(abfd) \ |
758 | ((struct elf_i386_obj_tdata *) (abfd)->tdata.any) | |
759 | ||
760 | #define elf_i386_local_got_tls_type(abfd) \ | |
761 | (elf_i386_tdata (abfd)->local_got_tls_type) | |
762 | ||
67a4f2b7 AO |
763 | #define elf_i386_local_tlsdesc_gotent(abfd) \ |
764 | (elf_i386_tdata (abfd)->local_tlsdesc_gotent) | |
765 | ||
0ffa91dd NC |
766 | #define is_i386_elf(bfd) \ |
767 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
768 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 769 | && elf_object_id (bfd) == I386_ELF_DATA) |
0ffa91dd | 770 | |
b34976b6 | 771 | static bfd_boolean |
55fd94b0 | 772 | elf_i386_mkobject (bfd *abfd) |
13ae64f3 | 773 | { |
0ffa91dd | 774 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata), |
4dfe6ac6 | 775 | I386_ELF_DATA); |
13ae64f3 | 776 | } |
cedb70c5 | 777 | |
252b5132 RH |
778 | /* i386 ELF linker hash table. */ |
779 | ||
780 | struct elf_i386_link_hash_table | |
781 | { | |
ebe50bae | 782 | struct elf_link_hash_table elf; |
252b5132 | 783 | |
6725bdbf | 784 | /* Short-cuts to get to dynamic linker sections. */ |
6725bdbf AM |
785 | asection *sdynbss; |
786 | asection *srelbss; | |
e41b3a13 | 787 | asection *plt_eh_frame; |
9635fe29 | 788 | |
4dfe6ac6 NC |
789 | union |
790 | { | |
13ae64f3 JJ |
791 | bfd_signed_vma refcount; |
792 | bfd_vma offset; | |
793 | } tls_ldm_got; | |
794 | ||
67a4f2b7 AO |
795 | /* The amount of space used by the reserved portion of the sgotplt |
796 | section, plus whatever space is used by the jump slots. */ | |
797 | bfd_vma sgotplt_jump_table_size; | |
798 | ||
87d72d41 AM |
799 | /* Small local sym cache. */ |
800 | struct sym_cache sym_cache; | |
9f03412a AO |
801 | |
802 | /* _TLS_MODULE_BASE_ symbol. */ | |
803 | struct bfd_link_hash_entry *tls_module_base; | |
c25bc9fc L |
804 | |
805 | /* Used by local STT_GNU_IFUNC symbols. */ | |
806 | htab_t loc_hash_table; | |
4dfe6ac6 NC |
807 | void * loc_hash_memory; |
808 | ||
809 | /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */ | |
810 | asection *srelplt2; | |
811 | ||
4dfe6ac6 NC |
812 | /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */ |
813 | bfd_vma next_tls_desc_index; | |
e1f98742 L |
814 | |
815 | /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */ | |
816 | bfd_vma next_jump_slot_index; | |
817 | ||
818 | /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */ | |
819 | bfd_vma next_irelative_index; | |
6725bdbf | 820 | }; |
252b5132 RH |
821 | |
822 | /* Get the i386 ELF linker hash table from a link_info structure. */ | |
823 | ||
824 | #define elf_i386_hash_table(p) \ | |
4dfe6ac6 NC |
825 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
826 | == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 827 | |
67a4f2b7 | 828 | #define elf_i386_compute_jump_table_size(htab) \ |
5ae0bfb6 | 829 | ((htab)->next_tls_desc_index * 4) |
67a4f2b7 | 830 | |
252b5132 RH |
831 | /* Create an entry in an i386 ELF linker hash table. */ |
832 | ||
833 | static struct bfd_hash_entry * | |
eb4ff4d6 L |
834 | elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry, |
835 | struct bfd_hash_table *table, | |
836 | const char *string) | |
252b5132 | 837 | { |
252b5132 RH |
838 | /* Allocate the structure if it has not already been allocated by a |
839 | subclass. */ | |
ebe50bae AM |
840 | if (entry == NULL) |
841 | { | |
a50b1753 NC |
842 | entry = (struct bfd_hash_entry *) |
843 | bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry)); | |
ebe50bae AM |
844 | if (entry == NULL) |
845 | return entry; | |
846 | } | |
252b5132 RH |
847 | |
848 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
849 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
850 | if (entry != NULL) | |
252b5132 | 851 | { |
ebe50bae AM |
852 | struct elf_i386_link_hash_entry *eh; |
853 | ||
854 | eh = (struct elf_i386_link_hash_entry *) entry; | |
855 | eh->dyn_relocs = NULL; | |
13ae64f3 | 856 | eh->tls_type = GOT_UNKNOWN; |
67a4f2b7 | 857 | eh->tlsdesc_got = (bfd_vma) -1; |
252b5132 RH |
858 | } |
859 | ||
ebe50bae | 860 | return entry; |
252b5132 RH |
861 | } |
862 | ||
c25bc9fc L |
863 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
864 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
865 | as global symbol. We reuse indx and dynstr_index for local symbol | |
866 | hash since they aren't used by global symbols in this backend. */ | |
867 | ||
868 | static hashval_t | |
869 | elf_i386_local_htab_hash (const void *ptr) | |
870 | { | |
871 | struct elf_link_hash_entry *h | |
872 | = (struct elf_link_hash_entry *) ptr; | |
d2149d72 | 873 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); |
c25bc9fc L |
874 | } |
875 | ||
876 | /* Compare local hash entries. */ | |
877 | ||
878 | static int | |
879 | elf_i386_local_htab_eq (const void *ptr1, const void *ptr2) | |
880 | { | |
881 | struct elf_link_hash_entry *h1 | |
882 | = (struct elf_link_hash_entry *) ptr1; | |
883 | struct elf_link_hash_entry *h2 | |
884 | = (struct elf_link_hash_entry *) ptr2; | |
885 | ||
886 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
887 | } | |
888 | ||
889 | /* Find and/or create a hash entry for local symbol. */ | |
890 | ||
891 | static struct elf_link_hash_entry * | |
892 | elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab, | |
893 | bfd *abfd, const Elf_Internal_Rela *rel, | |
894 | bfd_boolean create) | |
895 | { | |
896 | struct elf_i386_link_hash_entry e, *ret; | |
897 | asection *sec = abfd->sections; | |
d2149d72 L |
898 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, |
899 | ELF32_R_SYM (rel->r_info)); | |
c25bc9fc L |
900 | void **slot; |
901 | ||
902 | e.elf.indx = sec->id; | |
903 | e.elf.dynstr_index = ELF32_R_SYM (rel->r_info); | |
904 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
905 | create ? INSERT : NO_INSERT); | |
906 | ||
907 | if (!slot) | |
908 | return NULL; | |
909 | ||
910 | if (*slot) | |
911 | { | |
912 | ret = (struct elf_i386_link_hash_entry *) *slot; | |
913 | return &ret->elf; | |
914 | } | |
915 | ||
916 | ret = (struct elf_i386_link_hash_entry *) | |
917 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
918 | sizeof (struct elf_i386_link_hash_entry)); | |
919 | if (ret) | |
920 | { | |
921 | memset (ret, 0, sizeof (*ret)); | |
922 | ret->elf.indx = sec->id; | |
923 | ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info); | |
924 | ret->elf.dynindx = -1; | |
c25bc9fc L |
925 | *slot = ret; |
926 | } | |
927 | return &ret->elf; | |
928 | } | |
929 | ||
252b5132 RH |
930 | /* Create an i386 ELF linker hash table. */ |
931 | ||
932 | static struct bfd_link_hash_table * | |
55fd94b0 | 933 | elf_i386_link_hash_table_create (bfd *abfd) |
252b5132 RH |
934 | { |
935 | struct elf_i386_link_hash_table *ret; | |
dc810e39 | 936 | bfd_size_type amt = sizeof (struct elf_i386_link_hash_table); |
252b5132 | 937 | |
7bf52ea2 | 938 | ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt); |
ebe50bae | 939 | if (ret == NULL) |
252b5132 RH |
940 | return NULL; |
941 | ||
eb4ff4d6 L |
942 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
943 | elf_i386_link_hash_newfunc, | |
4dfe6ac6 NC |
944 | sizeof (struct elf_i386_link_hash_entry), |
945 | I386_ELF_DATA)) | |
252b5132 | 946 | { |
e2d34d7d | 947 | free (ret); |
252b5132 RH |
948 | return NULL; |
949 | } | |
950 | ||
c25bc9fc L |
951 | ret->loc_hash_table = htab_try_create (1024, |
952 | elf_i386_local_htab_hash, | |
953 | elf_i386_local_htab_eq, | |
954 | NULL); | |
955 | ret->loc_hash_memory = objalloc_create (); | |
956 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
957 | { | |
958 | free (ret); | |
959 | return NULL; | |
960 | } | |
961 | ||
ebe50bae | 962 | return &ret->elf.root; |
252b5132 RH |
963 | } |
964 | ||
c25bc9fc L |
965 | /* Destroy an i386 ELF linker hash table. */ |
966 | ||
967 | static void | |
968 | elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash) | |
969 | { | |
970 | struct elf_i386_link_hash_table *htab | |
971 | = (struct elf_i386_link_hash_table *) hash; | |
972 | ||
973 | if (htab->loc_hash_table) | |
974 | htab_delete (htab->loc_hash_table); | |
975 | if (htab->loc_hash_memory) | |
976 | objalloc_free ((struct objalloc *) htab->loc_hash_memory); | |
9f7c3e5e | 977 | _bfd_elf_link_hash_table_free (hash); |
c25bc9fc L |
978 | } |
979 | ||
6725bdbf AM |
980 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and |
981 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
982 | hash table. */ | |
983 | ||
b34976b6 | 984 | static bfd_boolean |
55fd94b0 | 985 | elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
6725bdbf AM |
986 | { |
987 | struct elf_i386_link_hash_table *htab; | |
988 | ||
6725bdbf | 989 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 990 | return FALSE; |
6725bdbf | 991 | |
6de2ae4a | 992 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
993 | if (htab == NULL) |
994 | return FALSE; | |
995 | ||
3d4d4302 | 996 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
6725bdbf | 997 | if (!info->shared) |
3d4d4302 | 998 | htab->srelbss = bfd_get_linker_section (dynobj, ".rel.bss"); |
6725bdbf | 999 | |
6de2ae4a | 1000 | if (!htab->sdynbss |
6725bdbf AM |
1001 | || (!info->shared && !htab->srelbss)) |
1002 | abort (); | |
1003 | ||
23209a78 | 1004 | if (get_elf_i386_backend_data (dynobj)->is_vxworks |
6de2ae4a L |
1005 | && !elf_vxworks_create_dynamic_sections (dynobj, info, |
1006 | &htab->srelplt2)) | |
711de32c | 1007 | return FALSE; |
eac338cf | 1008 | |
e41b3a13 | 1009 | if (!info->no_ld_generated_unwind_info |
2fe0fd06 | 1010 | && htab->plt_eh_frame == NULL |
e4de50d4 | 1011 | && htab->elf.splt != NULL) |
e41b3a13 | 1012 | { |
bbf96e4e L |
1013 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
1014 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
1015 | | SEC_LINKER_CREATED); | |
e41b3a13 | 1016 | htab->plt_eh_frame |
bbf96e4e | 1017 | = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags); |
e41b3a13 JJ |
1018 | if (htab->plt_eh_frame == NULL |
1019 | || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2)) | |
1020 | return FALSE; | |
e41b3a13 JJ |
1021 | } |
1022 | ||
b34976b6 | 1023 | return TRUE; |
6725bdbf AM |
1024 | } |
1025 | ||
ebe50bae AM |
1026 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
1027 | ||
51b64d56 | 1028 | static void |
fcfa13d2 | 1029 | elf_i386_copy_indirect_symbol (struct bfd_link_info *info, |
55fd94b0 AM |
1030 | struct elf_link_hash_entry *dir, |
1031 | struct elf_link_hash_entry *ind) | |
ebe50bae AM |
1032 | { |
1033 | struct elf_i386_link_hash_entry *edir, *eind; | |
1034 | ||
1035 | edir = (struct elf_i386_link_hash_entry *) dir; | |
1036 | eind = (struct elf_i386_link_hash_entry *) ind; | |
1037 | ||
bbd7ec4a | 1038 | if (eind->dyn_relocs != NULL) |
ebe50bae | 1039 | { |
bbd7ec4a AM |
1040 | if (edir->dyn_relocs != NULL) |
1041 | { | |
e03a8ed8 L |
1042 | struct elf_dyn_relocs **pp; |
1043 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 1044 | |
fcfa13d2 | 1045 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
1046 | list. Merge any entries against the same section. */ |
1047 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
1048 | { | |
e03a8ed8 | 1049 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
1050 | |
1051 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
1052 | if (q->sec == p->sec) | |
1053 | { | |
1054 | q->pc_count += p->pc_count; | |
1055 | q->count += p->count; | |
1056 | *pp = p->next; | |
1057 | break; | |
1058 | } | |
1059 | if (q == NULL) | |
1060 | pp = &p->next; | |
1061 | } | |
1062 | *pp = edir->dyn_relocs; | |
1063 | } | |
1064 | ||
ebe50bae AM |
1065 | edir->dyn_relocs = eind->dyn_relocs; |
1066 | eind->dyn_relocs = NULL; | |
1067 | } | |
ebe50bae | 1068 | |
cd67d266 JJ |
1069 | if (ind->root.type == bfd_link_hash_indirect |
1070 | && dir->got.refcount <= 0) | |
1071 | { | |
1072 | edir->tls_type = eind->tls_type; | |
1073 | eind->tls_type = GOT_UNKNOWN; | |
1074 | } | |
81848ca0 AM |
1075 | |
1076 | if (ELIMINATE_COPY_RELOCS | |
1077 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
1078 | && dir->dynamic_adjusted) |
1079 | { | |
1080 | /* If called to transfer flags for a weakdef during processing | |
1081 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
1082 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
1083 | dir->ref_dynamic |= ind->ref_dynamic; | |
1084 | dir->ref_regular |= ind->ref_regular; | |
1085 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1086 | dir->needs_plt |= ind->needs_plt; | |
1087 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
1088 | } | |
81848ca0 | 1089 | else |
fcfa13d2 | 1090 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
ebe50bae AM |
1091 | } |
1092 | ||
142411ca L |
1093 | /* Return TRUE if the TLS access code sequence support transition |
1094 | from R_TYPE. */ | |
1095 | ||
1096 | static bfd_boolean | |
1097 | elf_i386_check_tls_transition (bfd *abfd, asection *sec, | |
1098 | bfd_byte *contents, | |
1099 | Elf_Internal_Shdr *symtab_hdr, | |
1100 | struct elf_link_hash_entry **sym_hashes, | |
1101 | unsigned int r_type, | |
1102 | const Elf_Internal_Rela *rel, | |
1103 | const Elf_Internal_Rela *relend) | |
13ae64f3 | 1104 | { |
142411ca L |
1105 | unsigned int val, type; |
1106 | unsigned long r_symndx; | |
1107 | struct elf_link_hash_entry *h; | |
1108 | bfd_vma offset; | |
1109 | ||
1110 | /* Get the section contents. */ | |
1111 | if (contents == NULL) | |
1112 | { | |
1113 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1114 | contents = elf_section_data (sec)->this_hdr.contents; | |
1115 | else | |
1116 | { | |
1117 | /* FIXME: How to better handle error condition? */ | |
1118 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1119 | return FALSE; | |
13ae64f3 | 1120 | |
142411ca L |
1121 | /* Cache the section contents for elf_link_input_bfd. */ |
1122 | elf_section_data (sec)->this_hdr.contents = contents; | |
1123 | } | |
1124 | } | |
1125 | ||
1126 | offset = rel->r_offset; | |
13ae64f3 | 1127 | switch (r_type) |
142411ca L |
1128 | { |
1129 | case R_386_TLS_GD: | |
1130 | case R_386_TLS_LDM: | |
1131 | if (offset < 2 || (rel + 1) >= relend) | |
1132 | return FALSE; | |
1133 | ||
1134 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1135 | if (r_type == R_386_TLS_GD) | |
1136 | { | |
09e8c3bf | 1137 | /* Check transition from GD access model. Only |
142411ca L |
1138 | leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr |
1139 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop | |
1140 | can transit to different access model. */ | |
1141 | if ((offset + 10) > sec->size || | |
1142 | (type != 0x8d && type != 0x04)) | |
1143 | return FALSE; | |
1144 | ||
1145 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1146 | if (type == 0x04) | |
1147 | { | |
1148 | /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */ | |
1149 | if (offset < 3) | |
1150 | return FALSE; | |
1151 | ||
1152 | if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d) | |
1153 | return FALSE; | |
1154 | ||
1155 | if ((val & 0xc7) != 0x05 || val == (4 << 3)) | |
1156 | return FALSE; | |
1157 | } | |
1158 | else | |
1159 | { | |
1160 | /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */ | |
1161 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
1162 | return FALSE; | |
1163 | ||
1164 | if (bfd_get_8 (abfd, contents + offset + 9) != 0x90) | |
1165 | return FALSE; | |
1166 | } | |
1167 | } | |
1168 | else | |
1169 | { | |
1170 | /* Check transition from LD access model. Only | |
1171 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr | |
1172 | can transit to different access model. */ | |
1173 | if (type != 0x8d || (offset + 9) > sec->size) | |
1174 | return FALSE; | |
1175 | ||
1176 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1177 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
1178 | return FALSE; | |
1179 | } | |
1180 | ||
1181 | if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8) | |
1182 | return FALSE; | |
1183 | ||
1184 | r_symndx = ELF32_R_SYM (rel[1].r_info); | |
1185 | if (r_symndx < symtab_hdr->sh_info) | |
1186 | return FALSE; | |
1187 | ||
1188 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
c4fb387b L |
1189 | /* Use strncmp to check ___tls_get_addr since ___tls_get_addr |
1190 | may be versioned. */ | |
142411ca L |
1191 | return (h != NULL |
1192 | && h->root.root.string != NULL | |
1193 | && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32 | |
1194 | || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32) | |
c4fb387b L |
1195 | && (strncmp (h->root.root.string, "___tls_get_addr", |
1196 | 15) == 0)); | |
142411ca L |
1197 | |
1198 | case R_386_TLS_IE: | |
1199 | /* Check transition from IE access model: | |
1200 | movl foo@indntpoff(%rip), %eax | |
1201 | movl foo@indntpoff(%rip), %reg | |
1202 | addl foo@indntpoff(%rip), %reg | |
1203 | */ | |
1204 | ||
1205 | if (offset < 1 || (offset + 4) > sec->size) | |
1206 | return FALSE; | |
1207 | ||
1208 | /* Check "movl foo@tpoff(%rip), %eax" first. */ | |
1209 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1210 | if (val == 0xa1) | |
1211 | return TRUE; | |
1212 | ||
1213 | if (offset < 2) | |
1214 | return FALSE; | |
1215 | ||
1216 | /* Check movl|addl foo@tpoff(%rip), %reg. */ | |
1217 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1218 | return ((type == 0x8b || type == 0x03) | |
1219 | && (val & 0xc7) == 0x05); | |
1220 | ||
1221 | case R_386_TLS_GOTIE: | |
1222 | case R_386_TLS_IE_32: | |
1223 | /* Check transition from {IE_32,GOTIE} access model: | |
1224 | subl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1225 | movl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1226 | addl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1227 | */ | |
1228 | ||
1229 | if (offset < 2 || (offset + 4) > sec->size) | |
1230 | return FALSE; | |
1231 | ||
1232 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1233 | if ((val & 0xc0) != 0x80 || (val & 7) == 4) | |
1234 | return FALSE; | |
1235 | ||
1236 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1237 | return type == 0x8b || type == 0x2b || type == 0x03; | |
1238 | ||
1239 | case R_386_TLS_GOTDESC: | |
1240 | /* Check transition from GDesc access model: | |
1241 | leal x@tlsdesc(%ebx), %eax | |
1242 | ||
1243 | Make sure it's a leal adding ebx to a 32-bit offset | |
1244 | into any register, although it's probably almost always | |
1245 | going to be eax. */ | |
1246 | ||
1247 | if (offset < 2 || (offset + 4) > sec->size) | |
1248 | return FALSE; | |
1249 | ||
1250 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1251 | return FALSE; | |
1252 | ||
1253 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1254 | return (val & 0xc7) == 0x83; | |
1255 | ||
1256 | case R_386_TLS_DESC_CALL: | |
1257 | /* Check transition from GDesc access model: | |
1258 | call *x@tlsdesc(%rax) | |
1259 | */ | |
1260 | if (offset + 2 <= sec->size) | |
1261 | { | |
1262 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
fa289a5f AM |
1263 | static const unsigned char call[] = { 0xff, 0x10 }; |
1264 | return memcmp (contents + offset, call, 2) == 0; | |
142411ca L |
1265 | } |
1266 | ||
1267 | return FALSE; | |
1268 | ||
1269 | default: | |
1270 | abort (); | |
1271 | } | |
1272 | } | |
1273 | ||
1274 | /* Return TRUE if the TLS access transition is OK or no transition | |
1275 | will be performed. Update R_TYPE if there is a transition. */ | |
1276 | ||
1277 | static bfd_boolean | |
1278 | elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd, | |
1279 | asection *sec, bfd_byte *contents, | |
1280 | Elf_Internal_Shdr *symtab_hdr, | |
1281 | struct elf_link_hash_entry **sym_hashes, | |
1282 | unsigned int *r_type, int tls_type, | |
1283 | const Elf_Internal_Rela *rel, | |
1284 | const Elf_Internal_Rela *relend, | |
4c544807 L |
1285 | struct elf_link_hash_entry *h, |
1286 | unsigned long r_symndx) | |
142411ca L |
1287 | { |
1288 | unsigned int from_type = *r_type; | |
1289 | unsigned int to_type = from_type; | |
1290 | bfd_boolean check = TRUE; | |
1291 | ||
bb1cb422 L |
1292 | /* Skip TLS transition for functions. */ |
1293 | if (h != NULL | |
1294 | && (h->type == STT_FUNC | |
1295 | || h->type == STT_GNU_IFUNC)) | |
1296 | return TRUE; | |
1297 | ||
142411ca | 1298 | switch (from_type) |
13ae64f3 JJ |
1299 | { |
1300 | case R_386_TLS_GD: | |
67a4f2b7 AO |
1301 | case R_386_TLS_GOTDESC: |
1302 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 1303 | case R_386_TLS_IE_32: |
37e55690 JJ |
1304 | case R_386_TLS_IE: |
1305 | case R_386_TLS_GOTIE: | |
1d85728f | 1306 | if (info->executable) |
142411ca L |
1307 | { |
1308 | if (h == NULL) | |
1309 | to_type = R_386_TLS_LE_32; | |
1310 | else if (from_type != R_386_TLS_IE | |
1311 | && from_type != R_386_TLS_GOTIE) | |
1312 | to_type = R_386_TLS_IE_32; | |
1313 | } | |
1314 | ||
1315 | /* When we are called from elf_i386_relocate_section, CONTENTS | |
1316 | isn't NULL and there may be additional transitions based on | |
1317 | TLS_TYPE. */ | |
1318 | if (contents != NULL) | |
1319 | { | |
1320 | unsigned int new_to_type = to_type; | |
1321 | ||
1d85728f | 1322 | if (info->executable |
142411ca L |
1323 | && h != NULL |
1324 | && h->dynindx == -1 | |
1325 | && (tls_type & GOT_TLS_IE)) | |
1326 | new_to_type = R_386_TLS_LE_32; | |
1327 | ||
1328 | if (to_type == R_386_TLS_GD | |
1329 | || to_type == R_386_TLS_GOTDESC | |
1330 | || to_type == R_386_TLS_DESC_CALL) | |
1331 | { | |
1332 | if (tls_type == GOT_TLS_IE_POS) | |
1333 | new_to_type = R_386_TLS_GOTIE; | |
1334 | else if (tls_type & GOT_TLS_IE) | |
1335 | new_to_type = R_386_TLS_IE_32; | |
1336 | } | |
1337 | ||
1338 | /* We checked the transition before when we were called from | |
1339 | elf_i386_check_relocs. We only want to check the new | |
1340 | transition which hasn't been checked before. */ | |
1341 | check = new_to_type != to_type && from_type == to_type; | |
1342 | to_type = new_to_type; | |
1343 | } | |
1344 | ||
1345 | break; | |
1346 | ||
13ae64f3 | 1347 | case R_386_TLS_LDM: |
1d85728f | 1348 | if (info->executable) |
142411ca L |
1349 | to_type = R_386_TLS_LE_32; |
1350 | break; | |
1351 | ||
1352 | default: | |
1353 | return TRUE; | |
1354 | } | |
1355 | ||
1356 | /* Return TRUE if there is no transition. */ | |
1357 | if (from_type == to_type) | |
1358 | return TRUE; | |
1359 | ||
1360 | /* Check if the transition can be performed. */ | |
1361 | if (check | |
1362 | && ! elf_i386_check_tls_transition (abfd, sec, contents, | |
1363 | symtab_hdr, sym_hashes, | |
1364 | from_type, rel, relend)) | |
1365 | { | |
2f629d23 | 1366 | reloc_howto_type *from, *to; |
4c544807 | 1367 | const char *name; |
142411ca L |
1368 | |
1369 | from = elf_i386_rtype_to_howto (abfd, from_type); | |
1370 | to = elf_i386_rtype_to_howto (abfd, to_type); | |
1371 | ||
4c544807 L |
1372 | if (h) |
1373 | name = h->root.root.string; | |
1374 | else | |
1375 | { | |
4c544807 | 1376 | struct elf_i386_link_hash_table *htab; |
4dfe6ac6 | 1377 | |
4c544807 | 1378 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
1379 | if (htab == NULL) |
1380 | name = "*unknown*"; | |
1381 | else | |
1382 | { | |
1383 | Elf_Internal_Sym *isym; | |
1384 | ||
1385 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1386 | abfd, r_symndx); | |
1387 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1388 | } | |
4c544807 L |
1389 | } |
1390 | ||
142411ca L |
1391 | (*_bfd_error_handler) |
1392 | (_("%B: TLS transition from %s to %s against `%s' at 0x%lx " | |
1393 | "in section `%A' failed"), | |
4c544807 | 1394 | abfd, sec, from->name, to->name, name, |
142411ca L |
1395 | (unsigned long) rel->r_offset); |
1396 | bfd_set_error (bfd_error_bad_value); | |
1397 | return FALSE; | |
13ae64f3 JJ |
1398 | } |
1399 | ||
142411ca L |
1400 | *r_type = to_type; |
1401 | return TRUE; | |
13ae64f3 JJ |
1402 | } |
1403 | ||
252b5132 | 1404 | /* Look through the relocs for a section during the first phase, and |
0ac8d2ca AM |
1405 | calculate needed space in the global offset table, procedure linkage |
1406 | table, and dynamic reloc sections. */ | |
252b5132 | 1407 | |
b34976b6 | 1408 | static bfd_boolean |
55fd94b0 AM |
1409 | elf_i386_check_relocs (bfd *abfd, |
1410 | struct bfd_link_info *info, | |
1411 | asection *sec, | |
1412 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1413 | { |
6725bdbf | 1414 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1415 | Elf_Internal_Shdr *symtab_hdr; |
1416 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
1417 | const Elf_Internal_Rela *rel; |
1418 | const Elf_Internal_Rela *rel_end; | |
252b5132 RH |
1419 | asection *sreloc; |
1420 | ||
1049f94e | 1421 | if (info->relocatable) |
b34976b6 | 1422 | return TRUE; |
252b5132 | 1423 | |
0ffa91dd NC |
1424 | BFD_ASSERT (is_i386_elf (abfd)); |
1425 | ||
6725bdbf | 1426 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
1427 | if (htab == NULL) |
1428 | return FALSE; | |
1429 | ||
0ffa91dd | 1430 | symtab_hdr = &elf_symtab_hdr (abfd); |
252b5132 | 1431 | sym_hashes = elf_sym_hashes (abfd); |
252b5132 | 1432 | |
252b5132 RH |
1433 | sreloc = NULL; |
1434 | ||
1435 | rel_end = relocs + sec->reloc_count; | |
1436 | for (rel = relocs; rel < rel_end; rel++) | |
1437 | { | |
13ae64f3 | 1438 | unsigned int r_type; |
252b5132 RH |
1439 | unsigned long r_symndx; |
1440 | struct elf_link_hash_entry *h; | |
4c544807 L |
1441 | Elf_Internal_Sym *isym; |
1442 | const char *name; | |
06a6a421 | 1443 | bfd_boolean size_reloc; |
252b5132 RH |
1444 | |
1445 | r_symndx = ELF32_R_SYM (rel->r_info); | |
13ae64f3 | 1446 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 1447 | |
d9bc7a44 | 1448 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
f5f31454 | 1449 | { |
d003868e AM |
1450 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
1451 | abfd, | |
8f615d07 | 1452 | r_symndx); |
b34976b6 | 1453 | return FALSE; |
f5f31454 L |
1454 | } |
1455 | ||
252b5132 | 1456 | if (r_symndx < symtab_hdr->sh_info) |
c25bc9fc L |
1457 | { |
1458 | /* A local symbol. */ | |
c2e61a4e L |
1459 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1460 | abfd, r_symndx); | |
1461 | if (isym == NULL) | |
1462 | return FALSE; | |
c25bc9fc L |
1463 | |
1464 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
c25bc9fc L |
1465 | if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
1466 | { | |
9fff0c39 | 1467 | h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE); |
c25bc9fc | 1468 | if (h == NULL) |
c2e61a4e | 1469 | return FALSE; |
6bbec505 | 1470 | |
c25bc9fc L |
1471 | /* Fake a STT_GNU_IFUNC symbol. */ |
1472 | h->type = STT_GNU_IFUNC; | |
1473 | h->def_regular = 1; | |
1474 | h->ref_regular = 1; | |
1475 | h->forced_local = 1; | |
1476 | h->root.type = bfd_link_hash_defined; | |
1477 | } | |
1478 | else | |
1479 | h = NULL; | |
1480 | } | |
252b5132 | 1481 | else |
71cb9464 | 1482 | { |
4c544807 | 1483 | isym = NULL; |
71cb9464 L |
1484 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1485 | while (h->root.type == bfd_link_hash_indirect | |
1486 | || h->root.type == bfd_link_hash_warning) | |
1487 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c25bc9fc | 1488 | } |
cbe950e9 | 1489 | |
c25bc9fc L |
1490 | if (h != NULL) |
1491 | { | |
cbe950e9 L |
1492 | /* Create the ifunc sections for static executables. If we |
1493 | never see an indirect function symbol nor we are building | |
1494 | a static executable, those sections will be empty and | |
1495 | won't appear in output. */ | |
1496 | switch (r_type) | |
1497 | { | |
1498 | default: | |
1499 | break; | |
1500 | ||
1501 | case R_386_32: | |
1502 | case R_386_PC32: | |
1503 | case R_386_PLT32: | |
1504 | case R_386_GOT32: | |
1505 | case R_386_GOTOFF: | |
9d4057ee AM |
1506 | if (htab->elf.dynobj == NULL) |
1507 | htab->elf.dynobj = abfd; | |
1508 | if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
c2e61a4e | 1509 | return FALSE; |
cbe950e9 L |
1510 | break; |
1511 | } | |
1512 | ||
ad1e85de L |
1513 | /* It is referenced by a non-shared object. */ |
1514 | h->ref_regular = 1; | |
61315175 | 1515 | h->root.non_ir_ref = 1; |
71cb9464 | 1516 | } |
252b5132 | 1517 | |
142411ca L |
1518 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1519 | symtab_hdr, sym_hashes, | |
1520 | &r_type, GOT_UNKNOWN, | |
23209a78 | 1521 | rel, rel_end, h, r_symndx)) |
c2e61a4e | 1522 | return FALSE; |
13ae64f3 JJ |
1523 | |
1524 | switch (r_type) | |
252b5132 | 1525 | { |
37e55690 JJ |
1526 | case R_386_TLS_LDM: |
1527 | htab->tls_ldm_got.refcount += 1; | |
1528 | goto create_got; | |
1529 | ||
1530 | case R_386_PLT32: | |
1531 | /* This symbol requires a procedure linkage table entry. We | |
1532 | actually build the entry in adjust_dynamic_symbol, | |
1533 | because this might be a case of linking PIC code which is | |
1534 | never referenced by a dynamic object, in which case we | |
1535 | don't need to generate a procedure linkage table entry | |
1536 | after all. */ | |
1537 | ||
1538 | /* If this is a local symbol, we resolve it directly without | |
1539 | creating a procedure linkage table entry. */ | |
1540 | if (h == NULL) | |
1541 | continue; | |
1542 | ||
f5385ebf | 1543 | h->needs_plt = 1; |
37e55690 JJ |
1544 | h->plt.refcount += 1; |
1545 | break; | |
1546 | ||
6a3e1bae | 1547 | case R_386_SIZE32: |
06a6a421 | 1548 | size_reloc = TRUE; |
6a3e1bae L |
1549 | goto do_size; |
1550 | ||
13ae64f3 | 1551 | case R_386_TLS_IE_32: |
37e55690 JJ |
1552 | case R_386_TLS_IE: |
1553 | case R_386_TLS_GOTIE: | |
1d85728f | 1554 | if (!info->executable) |
13ae64f3 | 1555 | info->flags |= DF_STATIC_TLS; |
37e55690 JJ |
1556 | /* Fall through */ |
1557 | ||
252b5132 | 1558 | case R_386_GOT32: |
13ae64f3 | 1559 | case R_386_TLS_GD: |
67a4f2b7 AO |
1560 | case R_386_TLS_GOTDESC: |
1561 | case R_386_TLS_DESC_CALL: | |
252b5132 | 1562 | /* This symbol requires a global offset table entry. */ |
13ae64f3 JJ |
1563 | { |
1564 | int tls_type, old_tls_type; | |
1565 | ||
1566 | switch (r_type) | |
1567 | { | |
1568 | default: | |
1569 | case R_386_GOT32: tls_type = GOT_NORMAL; break; | |
1570 | case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; | |
67a4f2b7 AO |
1571 | case R_386_TLS_GOTDESC: |
1572 | case R_386_TLS_DESC_CALL: | |
1573 | tls_type = GOT_TLS_GDESC; break; | |
37e55690 JJ |
1574 | case R_386_TLS_IE_32: |
1575 | if (ELF32_R_TYPE (rel->r_info) == r_type) | |
1576 | tls_type = GOT_TLS_IE_NEG; | |
1577 | else | |
ebcfb3c0 JJ |
1578 | /* If this is a GD->IE transition, we may use either of |
1579 | R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ | |
37e55690 JJ |
1580 | tls_type = GOT_TLS_IE; |
1581 | break; | |
1582 | case R_386_TLS_IE: | |
1583 | case R_386_TLS_GOTIE: | |
1584 | tls_type = GOT_TLS_IE_POS; break; | |
13ae64f3 JJ |
1585 | } |
1586 | ||
1587 | if (h != NULL) | |
1588 | { | |
1589 | h->got.refcount += 1; | |
1590 | old_tls_type = elf_i386_hash_entry(h)->tls_type; | |
1591 | } | |
1592 | else | |
1593 | { | |
1594 | bfd_signed_vma *local_got_refcounts; | |
1595 | ||
1596 | /* This is a global offset table entry for a local symbol. */ | |
1597 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1598 | if (local_got_refcounts == NULL) | |
1599 | { | |
1600 | bfd_size_type size; | |
1601 | ||
1602 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
1603 | size *= (sizeof (bfd_signed_vma) |
1604 | + sizeof (bfd_vma) + sizeof(char)); | |
a50b1753 NC |
1605 | local_got_refcounts = (bfd_signed_vma *) |
1606 | bfd_zalloc (abfd, size); | |
13ae64f3 | 1607 | if (local_got_refcounts == NULL) |
c2e61a4e | 1608 | return FALSE; |
13ae64f3 | 1609 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
67a4f2b7 AO |
1610 | elf_i386_local_tlsdesc_gotent (abfd) |
1611 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); | |
13ae64f3 | 1612 | elf_i386_local_got_tls_type (abfd) |
67a4f2b7 | 1613 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
13ae64f3 JJ |
1614 | } |
1615 | local_got_refcounts[r_symndx] += 1; | |
1616 | old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx]; | |
1617 | } | |
1618 | ||
37e55690 JJ |
1619 | if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) |
1620 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1621 | /* If a TLS symbol is accessed using IE at least once, |
1622 | there is no point to use dynamic model for it. */ | |
ebcfb3c0 | 1623 | else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
67a4f2b7 | 1624 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
37e55690 | 1625 | || (tls_type & GOT_TLS_IE) == 0)) |
13ae64f3 | 1626 | { |
67a4f2b7 | 1627 | if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type)) |
37e55690 | 1628 | tls_type = old_tls_type; |
67a4f2b7 AO |
1629 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
1630 | && GOT_TLS_GD_ANY_P (tls_type)) | |
1631 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1632 | else |
1633 | { | |
09a24cbf | 1634 | if (h) |
4c544807 L |
1635 | name = h->root.root.string; |
1636 | else | |
1637 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1638 | NULL); | |
13ae64f3 | 1639 | (*_bfd_error_handler) |
d003868e | 1640 | (_("%B: `%s' accessed both as normal and " |
55fd94b0 | 1641 | "thread local symbol"), |
4c544807 | 1642 | abfd, name); |
68c4a57e | 1643 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1644 | return FALSE; |
13ae64f3 JJ |
1645 | } |
1646 | } | |
1647 | ||
1648 | if (old_tls_type != tls_type) | |
1649 | { | |
1650 | if (h != NULL) | |
1651 | elf_i386_hash_entry (h)->tls_type = tls_type; | |
1652 | else | |
1653 | elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1654 | } | |
1655 | } | |
0ac8d2ca AM |
1656 | /* Fall through */ |
1657 | ||
1658 | case R_386_GOTOFF: | |
1659 | case R_386_GOTPC: | |
13ae64f3 | 1660 | create_got: |
6de2ae4a | 1661 | if (htab->elf.sgot == NULL) |
0ac8d2ca AM |
1662 | { |
1663 | if (htab->elf.dynobj == NULL) | |
1664 | htab->elf.dynobj = abfd; | |
6de2ae4a | 1665 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) |
c2e61a4e | 1666 | return FALSE; |
0ac8d2ca | 1667 | } |
37e55690 JJ |
1668 | if (r_type != R_386_TLS_IE) |
1669 | break; | |
1670 | /* Fall through */ | |
252b5132 | 1671 | |
37e55690 JJ |
1672 | case R_386_TLS_LE_32: |
1673 | case R_386_TLS_LE: | |
1d85728f | 1674 | if (info->executable) |
37e55690 | 1675 | break; |
bffbf940 | 1676 | info->flags |= DF_STATIC_TLS; |
b34976b6 | 1677 | /* Fall through */ |
252b5132 RH |
1678 | |
1679 | case R_386_32: | |
1680 | case R_386_PC32: | |
710ab287 | 1681 | if (h != NULL && info->executable) |
6725bdbf | 1682 | { |
12d0ee4a | 1683 | /* If this reloc is in a read-only section, we might |
ebe50bae AM |
1684 | need a copy reloc. We can't check reliably at this |
1685 | stage whether the section is read-only, as input | |
1686 | sections have not yet been mapped to output sections. | |
1687 | Tentatively set the flag for now, and correct in | |
1688 | adjust_dynamic_symbol. */ | |
f5385ebf | 1689 | h->non_got_ref = 1; |
12d0ee4a AM |
1690 | |
1691 | /* We may need a .plt entry if the function this reloc | |
1692 | refers to is in a shared lib. */ | |
51b64d56 | 1693 | h->plt.refcount += 1; |
c6585bbb | 1694 | if (r_type != R_386_PC32) |
f5385ebf | 1695 | h->pointer_equality_needed = 1; |
6725bdbf | 1696 | } |
7843f00e | 1697 | |
06a6a421 | 1698 | size_reloc = FALSE; |
6a3e1bae | 1699 | do_size: |
252b5132 | 1700 | /* If we are creating a shared library, and this is a reloc |
f69da49f AM |
1701 | against a global symbol, or a non PC relative reloc |
1702 | against a local symbol, then we need to copy the reloc | |
1703 | into the shared library. However, if we are linking with | |
1704 | -Bsymbolic, we do not need to copy a reloc against a | |
1705 | global symbol which is defined in an object we are | |
1706 | including in the link (i.e., DEF_REGULAR is set). At | |
1707 | this point we have not seen all the input files, so it is | |
1708 | possible that DEF_REGULAR is not set now but will be set | |
1f655a09 L |
1709 | later (it is never cleared). In case of a weak definition, |
1710 | DEF_REGULAR may be cleared later by a strong definition in | |
ebe50bae | 1711 | a shared library. We account for that possibility below by |
1f655a09 L |
1712 | storing information in the relocs_copied field of the hash |
1713 | table entry. A similar situation occurs when creating | |
1714 | shared libraries and symbol visibility changes render the | |
12d0ee4a | 1715 | symbol local. |
56882138 | 1716 | |
12d0ee4a AM |
1717 | If on the other hand, we are creating an executable, we |
1718 | may need to keep relocations for symbols satisfied by a | |
1719 | dynamic library if we manage to avoid copy relocs for the | |
1720 | symbol. */ | |
1721 | if ((info->shared | |
1722 | && (sec->flags & SEC_ALLOC) != 0 | |
13ae64f3 | 1723 | && (r_type != R_386_PC32 |
12d0ee4a | 1724 | || (h != NULL |
55255dae | 1725 | && (! SYMBOLIC_BIND (info, h) |
12d0ee4a | 1726 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1727 | || !h->def_regular)))) |
a23b6845 AM |
1728 | || (ELIMINATE_COPY_RELOCS |
1729 | && !info->shared | |
12d0ee4a AM |
1730 | && (sec->flags & SEC_ALLOC) != 0 |
1731 | && h != NULL | |
12d0ee4a | 1732 | && (h->root.type == bfd_link_hash_defweak |
0f88be7a | 1733 | || !h->def_regular))) |
252b5132 | 1734 | { |
e03a8ed8 L |
1735 | struct elf_dyn_relocs *p; |
1736 | struct elf_dyn_relocs **head; | |
ec338859 | 1737 | |
12d0ee4a AM |
1738 | /* We must copy these reloc types into the output file. |
1739 | Create a reloc section in dynobj and make room for | |
1740 | this reloc. */ | |
252b5132 RH |
1741 | if (sreloc == NULL) |
1742 | { | |
0ac8d2ca AM |
1743 | if (htab->elf.dynobj == NULL) |
1744 | htab->elf.dynobj = abfd; | |
1745 | ||
83bac4b0 NC |
1746 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1747 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE); | |
1748 | ||
252b5132 | 1749 | if (sreloc == NULL) |
c2e61a4e | 1750 | return FALSE; |
252b5132 RH |
1751 | } |
1752 | ||
0c715baa AM |
1753 | /* If this is a global symbol, we count the number of |
1754 | relocations we need for this symbol. */ | |
1755 | if (h != NULL) | |
252b5132 | 1756 | { |
ec338859 | 1757 | head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs; |
0c715baa AM |
1758 | } |
1759 | else | |
1760 | { | |
ec338859 AM |
1761 | /* Track dynamic relocs needed for local syms too. |
1762 | We really need local syms available to do this | |
1763 | easily. Oh well. */ | |
87d72d41 | 1764 | void **vpp; |
ec338859 | 1765 | asection *s; |
87d72d41 AM |
1766 | |
1767 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1768 | abfd, r_symndx); | |
1769 | if (isym == NULL) | |
1770 | return FALSE; | |
1771 | ||
1772 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
ec338859 | 1773 | if (s == NULL) |
87d72d41 | 1774 | s = sec; |
ec338859 | 1775 | |
e81d3500 | 1776 | vpp = &elf_section_data (s)->local_dynrel; |
e03a8ed8 | 1777 | head = (struct elf_dyn_relocs **)vpp; |
ec338859 AM |
1778 | } |
1779 | ||
1780 | p = *head; | |
1781 | if (p == NULL || p->sec != sec) | |
1782 | { | |
1783 | bfd_size_type amt = sizeof *p; | |
a50b1753 NC |
1784 | p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj, |
1785 | amt); | |
ec338859 | 1786 | if (p == NULL) |
c2e61a4e | 1787 | return FALSE; |
ec338859 AM |
1788 | p->next = *head; |
1789 | *head = p; | |
1790 | p->sec = sec; | |
1791 | p->count = 0; | |
1792 | p->pc_count = 0; | |
252b5132 | 1793 | } |
ec338859 AM |
1794 | |
1795 | p->count += 1; | |
06a6a421 L |
1796 | /* Count size relocation as PC-relative relocation. */ |
1797 | if (r_type == R_386_PC32 || size_reloc) | |
ec338859 | 1798 | p->pc_count += 1; |
252b5132 | 1799 | } |
252b5132 RH |
1800 | break; |
1801 | ||
1802 | /* This relocation describes the C++ object vtable hierarchy. | |
1803 | Reconstruct it for later use during GC. */ | |
1804 | case R_386_GNU_VTINHERIT: | |
d17e0c6e | 1805 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
c2e61a4e | 1806 | return FALSE; |
252b5132 RH |
1807 | break; |
1808 | ||
1809 | /* This relocation describes which C++ vtable entries are actually | |
1810 | used. Record for later use during GC. */ | |
1811 | case R_386_GNU_VTENTRY: | |
c6aa130f MS |
1812 | BFD_ASSERT (h != NULL); |
1813 | if (h != NULL | |
1814 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
c2e61a4e | 1815 | return FALSE; |
252b5132 RH |
1816 | break; |
1817 | ||
1818 | default: | |
1819 | break; | |
1820 | } | |
1821 | } | |
1822 | ||
b34976b6 | 1823 | return TRUE; |
252b5132 RH |
1824 | } |
1825 | ||
1826 | /* Return the section that should be marked against GC for a given | |
1827 | relocation. */ | |
1828 | ||
1829 | static asection * | |
55fd94b0 | 1830 | elf_i386_gc_mark_hook (asection *sec, |
07adf181 | 1831 | struct bfd_link_info *info, |
55fd94b0 AM |
1832 | Elf_Internal_Rela *rel, |
1833 | struct elf_link_hash_entry *h, | |
1834 | Elf_Internal_Sym *sym) | |
252b5132 RH |
1835 | { |
1836 | if (h != NULL) | |
07adf181 AM |
1837 | switch (ELF32_R_TYPE (rel->r_info)) |
1838 | { | |
1839 | case R_386_GNU_VTINHERIT: | |
1840 | case R_386_GNU_VTENTRY: | |
1841 | return NULL; | |
1842 | } | |
1843 | ||
1844 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
1845 | } |
1846 | ||
1847 | /* Update the got entry reference counts for the section being removed. */ | |
1848 | ||
b34976b6 | 1849 | static bfd_boolean |
55fd94b0 AM |
1850 | elf_i386_gc_sweep_hook (bfd *abfd, |
1851 | struct bfd_link_info *info, | |
1852 | asection *sec, | |
1853 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1854 | { |
4dfe6ac6 | 1855 | struct elf_i386_link_hash_table *htab; |
dd5724d5 AM |
1856 | Elf_Internal_Shdr *symtab_hdr; |
1857 | struct elf_link_hash_entry **sym_hashes; | |
1858 | bfd_signed_vma *local_got_refcounts; | |
1859 | const Elf_Internal_Rela *rel, *relend; | |
dd5724d5 | 1860 | |
7dda2462 TG |
1861 | if (info->relocatable) |
1862 | return TRUE; | |
1863 | ||
4dfe6ac6 NC |
1864 | htab = elf_i386_hash_table (info); |
1865 | if (htab == NULL) | |
1866 | return FALSE; | |
1867 | ||
ec338859 | 1868 | elf_section_data (sec)->local_dynrel = NULL; |
dd5724d5 | 1869 | |
0ffa91dd | 1870 | symtab_hdr = &elf_symtab_hdr (abfd); |
6725bdbf AM |
1871 | sym_hashes = elf_sym_hashes (abfd); |
1872 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
dd5724d5 AM |
1873 | |
1874 | relend = relocs + sec->reloc_count; | |
1875 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1876 | { |
1877 | unsigned long r_symndx; | |
1878 | unsigned int r_type; | |
1879 | struct elf_link_hash_entry *h = NULL; | |
37e55690 | 1880 | |
26e41594 AM |
1881 | r_symndx = ELF32_R_SYM (rel->r_info); |
1882 | if (r_symndx >= symtab_hdr->sh_info) | |
1883 | { | |
26e41594 | 1884 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1885 | while (h->root.type == bfd_link_hash_indirect |
1886 | || h->root.type == bfd_link_hash_warning) | |
1887 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1888 | } |
bb1cb422 L |
1889 | else |
1890 | { | |
1891 | /* A local symbol. */ | |
1892 | Elf_Internal_Sym *isym; | |
1893 | ||
1894 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1895 | abfd, r_symndx); | |
1896 | ||
1897 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
1898 | if (isym != NULL | |
1899 | && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
1900 | { | |
1901 | h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE); | |
1902 | if (h == NULL) | |
1903 | abort (); | |
1904 | } | |
1905 | } | |
0c715baa | 1906 | |
3db2e7dd L |
1907 | if (h) |
1908 | { | |
1909 | struct elf_i386_link_hash_entry *eh; | |
1910 | struct elf_dyn_relocs **pp; | |
1911 | struct elf_dyn_relocs *p; | |
1912 | ||
1913 | eh = (struct elf_i386_link_hash_entry *) h; | |
1914 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
1915 | if (p->sec == sec) | |
1916 | { | |
1917 | /* Everything must go for SEC. */ | |
1918 | *pp = p->next; | |
1919 | break; | |
1920 | } | |
1921 | } | |
1922 | ||
26e41594 | 1923 | r_type = ELF32_R_TYPE (rel->r_info); |
142411ca L |
1924 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1925 | symtab_hdr, sym_hashes, | |
1926 | &r_type, GOT_UNKNOWN, | |
23209a78 | 1927 | rel, relend, h, r_symndx)) |
142411ca L |
1928 | return FALSE; |
1929 | ||
26e41594 AM |
1930 | switch (r_type) |
1931 | { | |
1932 | case R_386_TLS_LDM: | |
4dfe6ac6 NC |
1933 | if (htab->tls_ldm_got.refcount > 0) |
1934 | htab->tls_ldm_got.refcount -= 1; | |
26e41594 | 1935 | break; |
0c715baa | 1936 | |
26e41594 | 1937 | case R_386_TLS_GD: |
67a4f2b7 AO |
1938 | case R_386_TLS_GOTDESC: |
1939 | case R_386_TLS_DESC_CALL: | |
26e41594 AM |
1940 | case R_386_TLS_IE_32: |
1941 | case R_386_TLS_IE: | |
1942 | case R_386_TLS_GOTIE: | |
1943 | case R_386_GOT32: | |
1944 | if (h != NULL) | |
1945 | { | |
1946 | if (h->got.refcount > 0) | |
1947 | h->got.refcount -= 1; | |
bb1cb422 L |
1948 | if (h->type == STT_GNU_IFUNC) |
1949 | { | |
1950 | if (h->plt.refcount > 0) | |
1951 | h->plt.refcount -= 1; | |
1952 | } | |
26e41594 AM |
1953 | } |
1954 | else if (local_got_refcounts != NULL) | |
1955 | { | |
1956 | if (local_got_refcounts[r_symndx] > 0) | |
1957 | local_got_refcounts[r_symndx] -= 1; | |
1958 | } | |
1959 | break; | |
0c715baa | 1960 | |
26e41594 AM |
1961 | case R_386_32: |
1962 | case R_386_PC32: | |
1788fc08 | 1963 | case R_386_SIZE32: |
3db2e7dd L |
1964 | if (info->shared |
1965 | && (h == NULL || h->type != STT_GNU_IFUNC)) | |
26e41594 AM |
1966 | break; |
1967 | /* Fall through */ | |
6725bdbf | 1968 | |
26e41594 AM |
1969 | case R_386_PLT32: |
1970 | if (h != NULL) | |
1971 | { | |
1972 | if (h->plt.refcount > 0) | |
1973 | h->plt.refcount -= 1; | |
1974 | } | |
1975 | break; | |
dd5724d5 | 1976 | |
bb1cb422 L |
1977 | case R_386_GOTOFF: |
1978 | if (h != NULL && h->type == STT_GNU_IFUNC) | |
1979 | { | |
1980 | if (h->got.refcount > 0) | |
1981 | h->got.refcount -= 1; | |
1982 | if (h->plt.refcount > 0) | |
1983 | h->plt.refcount -= 1; | |
1984 | } | |
1985 | break; | |
1986 | ||
26e41594 AM |
1987 | default: |
1988 | break; | |
1989 | } | |
1990 | } | |
252b5132 | 1991 | |
b34976b6 | 1992 | return TRUE; |
252b5132 RH |
1993 | } |
1994 | ||
1995 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1996 | regular object. The current definition is in some section of the | |
1997 | dynamic object, but we're not including those sections. We have to | |
1998 | change the definition to something the rest of the link can | |
1999 | understand. */ | |
2000 | ||
b34976b6 | 2001 | static bfd_boolean |
55fd94b0 AM |
2002 | elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info, |
2003 | struct elf_link_hash_entry *h) | |
252b5132 | 2004 | { |
6725bdbf | 2005 | struct elf_i386_link_hash_table *htab; |
252b5132 | 2006 | asection *s; |
5ca5bb35 L |
2007 | struct elf_i386_link_hash_entry *eh; |
2008 | struct elf_dyn_relocs *p; | |
252b5132 | 2009 | |
cbe950e9 L |
2010 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
2011 | if (h->type == STT_GNU_IFUNC) | |
2012 | { | |
73bcf233 L |
2013 | /* All local STT_GNU_IFUNC references must be treate as local |
2014 | calls via local PLT. */ | |
5ca5bb35 L |
2015 | if (h->ref_regular |
2016 | && SYMBOL_CALLS_LOCAL (info, h)) | |
2017 | { | |
73bcf233 | 2018 | bfd_size_type pc_count = 0, count = 0; |
5ca5bb35 L |
2019 | struct elf_dyn_relocs **pp; |
2020 | ||
2021 | eh = (struct elf_i386_link_hash_entry *) h; | |
2022 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2023 | { | |
2024 | pc_count += p->pc_count; | |
2025 | p->count -= p->pc_count; | |
2026 | p->pc_count = 0; | |
73bcf233 | 2027 | count += p->count; |
5ca5bb35 L |
2028 | if (p->count == 0) |
2029 | *pp = p->next; | |
2030 | else | |
2031 | pp = &p->next; | |
2032 | } | |
2033 | ||
73bcf233 | 2034 | if (pc_count || count) |
5ca5bb35 L |
2035 | { |
2036 | h->needs_plt = 1; | |
5ca5bb35 | 2037 | h->non_got_ref = 1; |
a5479e5f L |
2038 | if (h->plt.refcount <= 0) |
2039 | h->plt.refcount = 1; | |
2040 | else | |
2041 | h->plt.refcount += 1; | |
5ca5bb35 L |
2042 | } |
2043 | } | |
2044 | ||
cbe950e9 L |
2045 | if (h->plt.refcount <= 0) |
2046 | { | |
2047 | h->plt.offset = (bfd_vma) -1; | |
2048 | h->needs_plt = 0; | |
2049 | } | |
2050 | return TRUE; | |
2051 | } | |
2052 | ||
252b5132 RH |
2053 | /* If this is a function, put it in the procedure linkage table. We |
2054 | will fill in the contents of the procedure linkage table later, | |
2055 | when we know the address of the .got section. */ | |
2056 | if (h->type == STT_FUNC | |
f5385ebf | 2057 | || h->needs_plt) |
252b5132 | 2058 | { |
6725bdbf | 2059 | if (h->plt.refcount <= 0 |
9c7a29a3 AM |
2060 | || SYMBOL_CALLS_LOCAL (info, h) |
2061 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
2062 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
2063 | { |
2064 | /* This case can occur if we saw a PLT32 reloc in an input | |
dd5724d5 AM |
2065 | file, but the symbol was never referred to by a dynamic |
2066 | object, or if all references were garbage collected. In | |
2067 | such a case, we don't actually need to build a procedure | |
2068 | linkage table, and we can just do a PC32 reloc instead. */ | |
bbd7ec4a | 2069 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2070 | h->needs_plt = 0; |
252b5132 RH |
2071 | } |
2072 | ||
b34976b6 | 2073 | return TRUE; |
252b5132 | 2074 | } |
6725bdbf AM |
2075 | else |
2076 | /* It's possible that we incorrectly decided a .plt reloc was | |
2077 | needed for an R_386_PC32 reloc to a non-function sym in | |
2078 | check_relocs. We can't decide accurately between function and | |
2079 | non-function syms in check-relocs; Objects loaded later in | |
2080 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 2081 | h->plt.offset = (bfd_vma) -1; |
252b5132 RH |
2082 | |
2083 | /* If this is a weak symbol, and there is a real definition, the | |
2084 | processor independent code will have arranged for us to see the | |
2085 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 2086 | if (h->u.weakdef != NULL) |
252b5132 | 2087 | { |
f6e332e6 AM |
2088 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2089 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2090 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2091 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 2092 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 2093 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 2094 | return TRUE; |
252b5132 RH |
2095 | } |
2096 | ||
2097 | /* This is a reference to a symbol defined by a dynamic object which | |
2098 | is not a function. */ | |
2099 | ||
2100 | /* If we are creating a shared library, we must presume that the | |
2101 | only references to the symbol are via the global offset table. | |
2102 | For such cases we need not do anything here; the relocations will | |
2103 | be handled correctly by relocate_section. */ | |
2104 | if (info->shared) | |
b34976b6 | 2105 | return TRUE; |
252b5132 | 2106 | |
7843f00e ILT |
2107 | /* If there are no references to this symbol that do not use the |
2108 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 2109 | if (!h->non_got_ref) |
b34976b6 | 2110 | return TRUE; |
7843f00e | 2111 | |
8bd621d8 AM |
2112 | /* If -z nocopyreloc was given, we won't generate them either. */ |
2113 | if (info->nocopyreloc) | |
2114 | { | |
f5385ebf | 2115 | h->non_got_ref = 0; |
b34976b6 | 2116 | return TRUE; |
8bd621d8 AM |
2117 | } |
2118 | ||
643796e3 | 2119 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
2120 | if (htab == NULL) |
2121 | return FALSE; | |
643796e3 DJ |
2122 | |
2123 | /* If there aren't any dynamic relocs in read-only sections, then | |
2124 | we can keep the dynamic relocs and avoid the copy reloc. This | |
2125 | doesn't work on VxWorks, where we can not have dynamic relocations | |
2126 | (other than copy and jump slot relocations) in an executable. */ | |
23209a78 RM |
2127 | if (ELIMINATE_COPY_RELOCS |
2128 | && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks) | |
ebe50bae | 2129 | { |
a23b6845 AM |
2130 | eh = (struct elf_i386_link_hash_entry *) h; |
2131 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2132 | { | |
2133 | s = p->sec->output_section; | |
2134 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2135 | break; | |
2136 | } | |
2137 | ||
a23b6845 AM |
2138 | if (p == NULL) |
2139 | { | |
f5385ebf | 2140 | h->non_got_ref = 0; |
a23b6845 AM |
2141 | return TRUE; |
2142 | } | |
ebe50bae AM |
2143 | } |
2144 | ||
252b5132 RH |
2145 | /* We must allocate the symbol in our .dynbss section, which will |
2146 | become part of the .bss section of the executable. There will be | |
2147 | an entry for this symbol in the .dynsym section. The dynamic | |
2148 | object will contain position independent code, so all references | |
2149 | from the dynamic object to this symbol will go through the global | |
2150 | offset table. The dynamic linker will use the .dynsym entry to | |
2151 | determine the address it must put in the global offset table, so | |
2152 | both the dynamic object and the regular object will refer to the | |
2153 | same memory location for the variable. */ | |
2154 | ||
252b5132 RH |
2155 | /* We must generate a R_386_COPY reloc to tell the dynamic linker to |
2156 | copy the initial value out of the dynamic object and into the | |
0ac8d2ca | 2157 | runtime process image. */ |
1d7e9d18 | 2158 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
252b5132 | 2159 | { |
eea6121a | 2160 | htab->srelbss->size += sizeof (Elf32_External_Rel); |
f5385ebf | 2161 | h->needs_copy = 1; |
252b5132 RH |
2162 | } |
2163 | ||
0ac8d2ca | 2164 | s = htab->sdynbss; |
252b5132 | 2165 | |
027297b7 | 2166 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
2167 | } |
2168 | ||
6725bdbf | 2169 | /* Allocate space in .plt, .got and associated reloc sections for |
0c715baa | 2170 | dynamic relocs. */ |
6725bdbf | 2171 | |
b34976b6 | 2172 | static bfd_boolean |
eb4ff4d6 | 2173 | elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
6725bdbf AM |
2174 | { |
2175 | struct bfd_link_info *info; | |
2176 | struct elf_i386_link_hash_table *htab; | |
5a15f56f | 2177 | struct elf_i386_link_hash_entry *eh; |
e03a8ed8 | 2178 | struct elf_dyn_relocs *p; |
25e762b9 | 2179 | unsigned plt_entry_size; |
6725bdbf | 2180 | |
e92d460e | 2181 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 2182 | return TRUE; |
6725bdbf | 2183 | |
cbe950e9 | 2184 | eh = (struct elf_i386_link_hash_entry *) h; |
e92d460e | 2185 | |
6725bdbf AM |
2186 | info = (struct bfd_link_info *) inf; |
2187 | htab = elf_i386_hash_table (info); | |
4dfe6ac6 NC |
2188 | if (htab == NULL) |
2189 | return FALSE; | |
6725bdbf | 2190 | |
25e762b9 RM |
2191 | plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd); |
2192 | ||
cbe950e9 L |
2193 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
2194 | here if it is defined and referenced in a non-shared object. */ | |
2195 | if (h->type == STT_GNU_IFUNC | |
2196 | && h->def_regular) | |
25e762b9 | 2197 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs, |
7b70956d WN |
2198 | plt_entry_size, |
2199 | plt_entry_size, 4); | |
cbe950e9 L |
2200 | else if (htab->elf.dynamic_sections_created |
2201 | && h->plt.refcount > 0) | |
6725bdbf | 2202 | { |
5a15f56f AM |
2203 | /* Make sure this symbol is output as a dynamic symbol. |
2204 | Undefined weak syms won't yet be marked as dynamic. */ | |
2205 | if (h->dynindx == -1 | |
f5385ebf | 2206 | && !h->forced_local) |
5a15f56f | 2207 | { |
c152c796 | 2208 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2209 | return FALSE; |
5a15f56f AM |
2210 | } |
2211 | ||
4e795f50 AM |
2212 | if (info->shared |
2213 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
ced53ee5 | 2214 | { |
6de2ae4a | 2215 | asection *s = htab->elf.splt; |
6725bdbf | 2216 | |
ced53ee5 AM |
2217 | /* If this is the first .plt entry, make room for the special |
2218 | first entry. */ | |
eea6121a | 2219 | if (s->size == 0) |
bb81b736 | 2220 | s->size = plt_entry_size; |
6725bdbf | 2221 | |
eea6121a | 2222 | h->plt.offset = s->size; |
6725bdbf | 2223 | |
ced53ee5 AM |
2224 | /* If this symbol is not defined in a regular file, and we are |
2225 | not generating a shared library, then set the symbol to this | |
2226 | location in the .plt. This is required to make function | |
2227 | pointers compare as equal between the normal executable and | |
2228 | the shared library. */ | |
2229 | if (! info->shared | |
f5385ebf | 2230 | && !h->def_regular) |
ced53ee5 AM |
2231 | { |
2232 | h->root.u.def.section = s; | |
2233 | h->root.u.def.value = h->plt.offset; | |
2234 | } | |
6725bdbf | 2235 | |
ced53ee5 | 2236 | /* Make room for this entry. */ |
25e762b9 | 2237 | s->size += plt_entry_size; |
6725bdbf | 2238 | |
ced53ee5 AM |
2239 | /* We also need to make an entry in the .got.plt section, which |
2240 | will be placed in the .got section by the linker script. */ | |
6de2ae4a | 2241 | htab->elf.sgotplt->size += 4; |
6725bdbf | 2242 | |
6725bdbf | 2243 | /* We also need to make an entry in the .rel.plt section. */ |
6de2ae4a | 2244 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
e1f98742 | 2245 | htab->elf.srelplt->reloc_count++; |
eac338cf | 2246 | |
23209a78 RM |
2247 | if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks |
2248 | && !info->shared) | |
eac338cf PB |
2249 | { |
2250 | /* VxWorks has a second set of relocations for each PLT entry | |
2251 | in executables. They go in a separate relocation section, | |
2252 | which is processed by the kernel loader. */ | |
2253 | ||
2254 | /* There are two relocations for the initial PLT entry: an | |
2255 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an | |
2256 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
2257 | ||
25e762b9 | 2258 | if (h->plt.offset == plt_entry_size) |
eac338cf PB |
2259 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); |
2260 | ||
2261 | /* There are two extra relocations for each subsequent PLT entry: | |
2262 | an R_386_32 relocation for the GOT entry, and an R_386_32 | |
2263 | relocation for the PLT entry. */ | |
2264 | ||
2265 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); | |
2266 | } | |
6725bdbf | 2267 | } |
ced53ee5 AM |
2268 | else |
2269 | { | |
51b64d56 | 2270 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2271 | h->needs_plt = 0; |
ced53ee5 | 2272 | } |
6725bdbf AM |
2273 | } |
2274 | else | |
2275 | { | |
51b64d56 | 2276 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2277 | h->needs_plt = 0; |
6725bdbf AM |
2278 | } |
2279 | ||
67a4f2b7 AO |
2280 | eh->tlsdesc_got = (bfd_vma) -1; |
2281 | ||
37e55690 | 2282 | /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, |
13ae64f3 JJ |
2283 | make it a R_386_TLS_LE_32 requiring no TLS entry. */ |
2284 | if (h->got.refcount > 0 | |
1d85728f | 2285 | && info->executable |
13ae64f3 | 2286 | && h->dynindx == -1 |
37e55690 | 2287 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE)) |
cedb70c5 | 2288 | h->got.offset = (bfd_vma) -1; |
13ae64f3 | 2289 | else if (h->got.refcount > 0) |
6725bdbf | 2290 | { |
0ac8d2ca | 2291 | asection *s; |
b34976b6 | 2292 | bfd_boolean dyn; |
13ae64f3 | 2293 | int tls_type = elf_i386_hash_entry(h)->tls_type; |
6725bdbf | 2294 | |
5a15f56f AM |
2295 | /* Make sure this symbol is output as a dynamic symbol. |
2296 | Undefined weak syms won't yet be marked as dynamic. */ | |
2297 | if (h->dynindx == -1 | |
f5385ebf | 2298 | && !h->forced_local) |
5a15f56f | 2299 | { |
c152c796 | 2300 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2301 | return FALSE; |
5a15f56f AM |
2302 | } |
2303 | ||
6de2ae4a | 2304 | s = htab->elf.sgot; |
67a4f2b7 AO |
2305 | if (GOT_TLS_GDESC_P (tls_type)) |
2306 | { | |
6de2ae4a | 2307 | eh->tlsdesc_got = htab->elf.sgotplt->size |
67a4f2b7 | 2308 | - elf_i386_compute_jump_table_size (htab); |
6de2ae4a | 2309 | htab->elf.sgotplt->size += 8; |
67a4f2b7 AO |
2310 | h->got.offset = (bfd_vma) -2; |
2311 | } | |
2312 | if (! GOT_TLS_GDESC_P (tls_type) | |
2313 | || GOT_TLS_GD_P (tls_type)) | |
2314 | { | |
2315 | h->got.offset = s->size; | |
2316 | s->size += 4; | |
2317 | /* R_386_TLS_GD needs 2 consecutive GOT slots. */ | |
2318 | if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH) | |
2319 | s->size += 4; | |
2320 | } | |
ebe50bae | 2321 | dyn = htab->elf.dynamic_sections_created; |
13ae64f3 | 2322 | /* R_386_TLS_IE_32 needs one dynamic relocation, |
37e55690 JJ |
2323 | R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, |
2324 | (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we | |
2325 | need two), R_386_TLS_GD needs one if local symbol and two if | |
2326 | global. */ | |
2327 | if (tls_type == GOT_TLS_IE_BOTH) | |
6de2ae4a | 2328 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 | 2329 | else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1) |
37e55690 | 2330 | || (tls_type & GOT_TLS_IE)) |
6de2ae4a | 2331 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2332 | else if (GOT_TLS_GD_P (tls_type)) |
6de2ae4a | 2333 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2334 | else if (! GOT_TLS_GDESC_P (tls_type) |
2335 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2336 | || h->root.type != bfd_link_hash_undefweak) | |
ef5aade5 L |
2337 | && (info->shared |
2338 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
6de2ae4a | 2339 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2340 | if (GOT_TLS_GDESC_P (tls_type)) |
6de2ae4a | 2341 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
6725bdbf AM |
2342 | } |
2343 | else | |
51b64d56 | 2344 | h->got.offset = (bfd_vma) -1; |
6725bdbf | 2345 | |
5a15f56f | 2346 | if (eh->dyn_relocs == NULL) |
b34976b6 | 2347 | return TRUE; |
5a15f56f | 2348 | |
0c715baa AM |
2349 | /* In the shared -Bsymbolic case, discard space allocated for |
2350 | dynamic pc-relative relocs against symbols which turn out to be | |
2351 | defined in regular objects. For the normal shared case, discard | |
0ac8d2ca AM |
2352 | space for pc-relative relocs that have become local due to symbol |
2353 | visibility changes. */ | |
0c715baa AM |
2354 | |
2355 | if (info->shared) | |
5a15f56f | 2356 | { |
09695f56 AM |
2357 | /* The only reloc that uses pc_count is R_386_PC32, which will |
2358 | appear on a call or on something like ".long foo - .". We | |
2359 | want calls to protected symbols to resolve directly to the | |
2360 | function rather than going via the plt. If people want | |
2361 | function pointer comparisons to work as expected then they | |
2362 | should avoid writing assembly like ".long foo - .". */ | |
2363 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
5a15f56f | 2364 | { |
e03a8ed8 | 2365 | struct elf_dyn_relocs **pp; |
0c715baa AM |
2366 | |
2367 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2368 | { | |
c3ce498c L |
2369 | p->count -= p->pc_count; |
2370 | p->pc_count = 0; | |
0c715baa AM |
2371 | if (p->count == 0) |
2372 | *pp = p->next; | |
2373 | else | |
2374 | pp = &p->next; | |
2375 | } | |
5a15f56f | 2376 | } |
4e795f50 | 2377 | |
23209a78 | 2378 | if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks) |
3348747a | 2379 | { |
e03a8ed8 | 2380 | struct elf_dyn_relocs **pp; |
3348747a NS |
2381 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
2382 | { | |
2383 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
2384 | *pp = p->next; | |
2385 | else | |
2386 | pp = &p->next; | |
2387 | } | |
2388 | } | |
2389 | ||
4e795f50 | 2390 | /* Also discard relocs on undefined weak syms with non-default |
c353e543 | 2391 | visibility. */ |
22d606e9 | 2392 | if (eh->dyn_relocs != NULL |
c353e543 | 2393 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
2394 | { |
2395 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2396 | eh->dyn_relocs = NULL; | |
2397 | ||
2398 | /* Make sure undefined weak symbols are output as a dynamic | |
2399 | symbol in PIEs. */ | |
2400 | else if (h->dynindx == -1 | |
2401 | && !h->forced_local) | |
2402 | { | |
2403 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2404 | return FALSE; | |
2405 | } | |
2406 | } | |
0c715baa | 2407 | } |
a23b6845 | 2408 | else if (ELIMINATE_COPY_RELOCS) |
0c715baa AM |
2409 | { |
2410 | /* For the non-shared case, discard space for relocs against | |
2411 | symbols which turn out to need copy relocs or are not | |
2412 | dynamic. */ | |
2413 | ||
f5385ebf AM |
2414 | if (!h->non_got_ref |
2415 | && ((h->def_dynamic | |
2416 | && !h->def_regular) | |
ebe50bae | 2417 | || (htab->elf.dynamic_sections_created |
0c715baa AM |
2418 | && (h->root.type == bfd_link_hash_undefweak |
2419 | || h->root.type == bfd_link_hash_undefined)))) | |
2420 | { | |
2421 | /* Make sure this symbol is output as a dynamic symbol. | |
2422 | Undefined weak syms won't yet be marked as dynamic. */ | |
2423 | if (h->dynindx == -1 | |
f5385ebf | 2424 | && !h->forced_local) |
0c715baa | 2425 | { |
c152c796 | 2426 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2427 | return FALSE; |
0c715baa | 2428 | } |
5a15f56f | 2429 | |
0c715baa AM |
2430 | /* If that succeeded, we know we'll be keeping all the |
2431 | relocs. */ | |
2432 | if (h->dynindx != -1) | |
2433 | goto keep; | |
2434 | } | |
2435 | ||
2436 | eh->dyn_relocs = NULL; | |
2437 | ||
ec338859 | 2438 | keep: ; |
5a15f56f AM |
2439 | } |
2440 | ||
0c715baa AM |
2441 | /* Finally, allocate space. */ |
2442 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
12d0ee4a | 2443 | { |
e7c33416 NC |
2444 | asection *sreloc; |
2445 | ||
cbe950e9 | 2446 | sreloc = elf_section_data (p->sec)->sreloc; |
e7c33416 NC |
2447 | |
2448 | BFD_ASSERT (sreloc != NULL); | |
eea6121a | 2449 | sreloc->size += p->count * sizeof (Elf32_External_Rel); |
12d0ee4a AM |
2450 | } |
2451 | ||
b34976b6 | 2452 | return TRUE; |
6725bdbf AM |
2453 | } |
2454 | ||
c25bc9fc L |
2455 | /* Allocate space in .plt, .got and associated reloc sections for |
2456 | local dynamic relocs. */ | |
2457 | ||
2458 | static bfd_boolean | |
2459 | elf_i386_allocate_local_dynrelocs (void **slot, void *inf) | |
2460 | { | |
2461 | struct elf_link_hash_entry *h | |
2462 | = (struct elf_link_hash_entry *) *slot; | |
2463 | ||
2464 | if (h->type != STT_GNU_IFUNC | |
2465 | || !h->def_regular | |
2466 | || !h->ref_regular | |
2467 | || !h->forced_local | |
2468 | || h->root.type != bfd_link_hash_defined) | |
2469 | abort (); | |
2470 | ||
2471 | return elf_i386_allocate_dynrelocs (h, inf); | |
2472 | } | |
2473 | ||
0c715baa AM |
2474 | /* Find any dynamic relocs that apply to read-only sections. */ |
2475 | ||
b34976b6 | 2476 | static bfd_boolean |
eb4ff4d6 | 2477 | elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
0c715baa AM |
2478 | { |
2479 | struct elf_i386_link_hash_entry *eh; | |
e03a8ed8 | 2480 | struct elf_dyn_relocs *p; |
0c715baa | 2481 | |
aa715242 L |
2482 | /* Skip local IFUNC symbols. */ |
2483 | if (h->forced_local && h->type == STT_GNU_IFUNC) | |
2484 | return TRUE; | |
2485 | ||
0c715baa AM |
2486 | eh = (struct elf_i386_link_hash_entry *) h; |
2487 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2488 | { | |
2489 | asection *s = p->sec->output_section; | |
2490 | ||
2491 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2492 | { | |
2493 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2494 | ||
2495 | info->flags |= DF_TEXTREL; | |
2496 | ||
b70321a2 L |
2497 | if (info->warn_shared_textrel && info->shared) |
2498 | info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"), | |
2499 | p->sec->owner, h->root.root.string, | |
2500 | p->sec); | |
2501 | ||
0c715baa | 2502 | /* Not an error, just cut short the traversal. */ |
b34976b6 | 2503 | return FALSE; |
0c715baa AM |
2504 | } |
2505 | } | |
b34976b6 | 2506 | return TRUE; |
0c715baa AM |
2507 | } |
2508 | ||
daa67607 L |
2509 | /* Convert |
2510 | mov foo@GOT(%reg), %reg | |
2511 | to | |
2512 | lea foo@GOTOFF(%reg), %reg | |
2513 | with the local symbol, foo. */ | |
2514 | ||
2515 | static bfd_boolean | |
2516 | elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec, | |
2517 | struct bfd_link_info *link_info) | |
2518 | { | |
2519 | Elf_Internal_Shdr *symtab_hdr; | |
2520 | Elf_Internal_Rela *internal_relocs; | |
2521 | Elf_Internal_Rela *irel, *irelend; | |
2522 | bfd_byte *contents; | |
2523 | struct elf_i386_link_hash_table *htab; | |
2524 | bfd_boolean changed_contents; | |
2525 | bfd_boolean changed_relocs; | |
2526 | bfd_signed_vma *local_got_refcounts; | |
2527 | ||
2528 | /* Don't even try to convert non-ELF outputs. */ | |
2529 | if (!is_elf_hash_table (link_info->hash)) | |
2530 | return FALSE; | |
2531 | ||
fbdc86d9 | 2532 | /* Nothing to do if there are no codes, no relocations or no output. */ |
daa67607 | 2533 | if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC) |
fbdc86d9 L |
2534 | || sec->reloc_count == 0 |
2535 | || discarded_section (sec)) | |
daa67607 L |
2536 | return TRUE; |
2537 | ||
2538 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2539 | ||
2540 | /* Load the relocations for this section. */ | |
2541 | internal_relocs = (_bfd_elf_link_read_relocs | |
2542 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, | |
2543 | link_info->keep_memory)); | |
2544 | if (internal_relocs == NULL) | |
2545 | return FALSE; | |
2546 | ||
2547 | htab = elf_i386_hash_table (link_info); | |
2548 | changed_contents = FALSE; | |
2549 | changed_relocs = FALSE; | |
2550 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
2551 | ||
2552 | /* Get the section contents. */ | |
2553 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2554 | contents = elf_section_data (sec)->this_hdr.contents; | |
2555 | else | |
2556 | { | |
2557 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
2558 | goto error_return; | |
2559 | } | |
2560 | ||
2561 | irelend = internal_relocs + sec->reloc_count; | |
2562 | for (irel = internal_relocs; irel < irelend; irel++) | |
2563 | { | |
2564 | unsigned int r_type = ELF32_R_TYPE (irel->r_info); | |
2565 | unsigned int r_symndx = ELF32_R_SYM (irel->r_info); | |
2566 | unsigned int indx; | |
2567 | struct elf_link_hash_entry *h; | |
2568 | ||
2569 | if (r_type != R_386_GOT32) | |
2570 | continue; | |
2571 | ||
2572 | /* Get the symbol referred to by the reloc. */ | |
2573 | if (r_symndx < symtab_hdr->sh_info) | |
2574 | { | |
2575 | Elf_Internal_Sym *isym; | |
2576 | ||
2577 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
2578 | abfd, r_symndx); | |
2579 | ||
2580 | /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */ | |
2581 | if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC | |
2582 | && bfd_get_8 (input_bfd, | |
2583 | contents + irel->r_offset - 2) == 0x8b) | |
2584 | { | |
2585 | bfd_put_8 (output_bfd, 0x8d, | |
2586 | contents + irel->r_offset - 2); | |
2587 | irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF); | |
2588 | if (local_got_refcounts != NULL | |
2589 | && local_got_refcounts[r_symndx] > 0) | |
2590 | local_got_refcounts[r_symndx] -= 1; | |
2591 | changed_contents = TRUE; | |
2592 | changed_relocs = TRUE; | |
2593 | } | |
2594 | continue; | |
2595 | } | |
2596 | ||
2597 | indx = r_symndx - symtab_hdr->sh_info; | |
2598 | h = elf_sym_hashes (abfd)[indx]; | |
2599 | BFD_ASSERT (h != NULL); | |
2600 | ||
2601 | while (h->root.type == bfd_link_hash_indirect | |
2602 | || h->root.type == bfd_link_hash_warning) | |
2603 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2604 | ||
3f65f599 L |
2605 | /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid |
2606 | optimizing _DYNAMIC since ld.so may use its link-time address. */ | |
daa67607 L |
2607 | if (h->def_regular |
2608 | && h->type != STT_GNU_IFUNC | |
9637f6ef | 2609 | && h != htab->elf.hdynamic |
daa67607 L |
2610 | && SYMBOL_REFERENCES_LOCAL (link_info, h) |
2611 | && bfd_get_8 (input_bfd, | |
2612 | contents + irel->r_offset - 2) == 0x8b) | |
2613 | { | |
2614 | bfd_put_8 (output_bfd, 0x8d, | |
2615 | contents + irel->r_offset - 2); | |
2616 | irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF); | |
2617 | if (h->got.refcount > 0) | |
2618 | h->got.refcount -= 1; | |
2619 | changed_contents = TRUE; | |
2620 | changed_relocs = TRUE; | |
2621 | } | |
2622 | } | |
2623 | ||
2624 | if (contents != NULL | |
2625 | && elf_section_data (sec)->this_hdr.contents != contents) | |
2626 | { | |
2627 | if (!changed_contents && !link_info->keep_memory) | |
2628 | free (contents); | |
2629 | else | |
2630 | { | |
2631 | /* Cache the section contents for elf_link_input_bfd. */ | |
2632 | elf_section_data (sec)->this_hdr.contents = contents; | |
2633 | } | |
2634 | } | |
2635 | ||
2636 | if (elf_section_data (sec)->relocs != internal_relocs) | |
2637 | { | |
2638 | if (!changed_relocs) | |
2639 | free (internal_relocs); | |
2640 | else | |
2641 | elf_section_data (sec)->relocs = internal_relocs; | |
2642 | } | |
2643 | ||
2644 | return TRUE; | |
2645 | ||
2646 | error_return: | |
2647 | if (contents != NULL | |
2648 | && elf_section_data (sec)->this_hdr.contents != contents) | |
2649 | free (contents); | |
2650 | if (internal_relocs != NULL | |
2651 | && elf_section_data (sec)->relocs != internal_relocs) | |
2652 | free (internal_relocs); | |
2653 | return FALSE; | |
2654 | } | |
2655 | ||
252b5132 RH |
2656 | /* Set the sizes of the dynamic sections. */ |
2657 | ||
b34976b6 | 2658 | static bfd_boolean |
23209a78 | 2659 | elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
252b5132 | 2660 | { |
6725bdbf | 2661 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2662 | bfd *dynobj; |
2663 | asection *s; | |
b34976b6 | 2664 | bfd_boolean relocs; |
0c715baa | 2665 | bfd *ibfd; |
252b5132 | 2666 | |
6725bdbf | 2667 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
2668 | if (htab == NULL) |
2669 | return FALSE; | |
ebe50bae | 2670 | dynobj = htab->elf.dynobj; |
ffb2e45b AM |
2671 | if (dynobj == NULL) |
2672 | abort (); | |
252b5132 | 2673 | |
ebe50bae | 2674 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2675 | { |
2676 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 2677 | if (info->executable) |
252b5132 | 2678 | { |
3d4d4302 | 2679 | s = bfd_get_linker_section (dynobj, ".interp"); |
ffb2e45b AM |
2680 | if (s == NULL) |
2681 | abort (); | |
eea6121a | 2682 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
2683 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2684 | } | |
161d71a6 | 2685 | } |
6725bdbf | 2686 | |
0c715baa AM |
2687 | /* Set up .got offsets for local syms, and space for local dynamic |
2688 | relocs. */ | |
2689 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
161d71a6 L |
2690 | { |
2691 | bfd_signed_vma *local_got; | |
2692 | bfd_signed_vma *end_local_got; | |
13ae64f3 | 2693 | char *local_tls_type; |
67a4f2b7 | 2694 | bfd_vma *local_tlsdesc_gotent; |
161d71a6 L |
2695 | bfd_size_type locsymcount; |
2696 | Elf_Internal_Shdr *symtab_hdr; | |
2697 | asection *srel; | |
6725bdbf | 2698 | |
0ffa91dd | 2699 | if (! is_i386_elf (ibfd)) |
161d71a6 | 2700 | continue; |
6725bdbf | 2701 | |
0c715baa AM |
2702 | for (s = ibfd->sections; s != NULL; s = s->next) |
2703 | { | |
e03a8ed8 | 2704 | struct elf_dyn_relocs *p; |
0c715baa | 2705 | |
daa67607 L |
2706 | if (!elf_i386_convert_mov_to_lea (ibfd, s, info)) |
2707 | return FALSE; | |
2708 | ||
e03a8ed8 | 2709 | for (p = ((struct elf_dyn_relocs *) |
e81d3500 | 2710 | elf_section_data (s)->local_dynrel); |
ec338859 AM |
2711 | p != NULL; |
2712 | p = p->next) | |
0c715baa | 2713 | { |
ec338859 AM |
2714 | if (!bfd_is_abs_section (p->sec) |
2715 | && bfd_is_abs_section (p->sec->output_section)) | |
2716 | { | |
2717 | /* Input section has been discarded, either because | |
2718 | it is a copy of a linkonce section or due to | |
2719 | linker script /DISCARD/, so we'll be discarding | |
2720 | the relocs too. */ | |
2721 | } | |
23209a78 | 2722 | else if (get_elf_i386_backend_data (output_bfd)->is_vxworks |
3348747a NS |
2723 | && strcmp (p->sec->output_section->name, |
2724 | ".tls_vars") == 0) | |
2725 | { | |
2726 | /* Relocations in vxworks .tls_vars sections are | |
2727 | handled specially by the loader. */ | |
2728 | } | |
248866a8 | 2729 | else if (p->count != 0) |
ec338859 AM |
2730 | { |
2731 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 2732 | srel->size += p->count * sizeof (Elf32_External_Rel); |
4b819e1f L |
2733 | if ((p->sec->output_section->flags & SEC_READONLY) != 0 |
2734 | && (info->flags & DF_TEXTREL) == 0) | |
b70321a2 L |
2735 | { |
2736 | info->flags |= DF_TEXTREL; | |
2737 | if (info->warn_shared_textrel && info->shared) | |
2738 | info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"), | |
2739 | p->sec->owner, p->sec); | |
b70321a2 | 2740 | } |
ec338859 | 2741 | } |
0c715baa AM |
2742 | } |
2743 | } | |
2744 | ||
2745 | local_got = elf_local_got_refcounts (ibfd); | |
161d71a6 L |
2746 | if (!local_got) |
2747 | continue; | |
6725bdbf | 2748 | |
0ffa91dd | 2749 | symtab_hdr = &elf_symtab_hdr (ibfd); |
161d71a6 L |
2750 | locsymcount = symtab_hdr->sh_info; |
2751 | end_local_got = local_got + locsymcount; | |
13ae64f3 | 2752 | local_tls_type = elf_i386_local_got_tls_type (ibfd); |
67a4f2b7 | 2753 | local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd); |
6de2ae4a L |
2754 | s = htab->elf.sgot; |
2755 | srel = htab->elf.srelgot; | |
67a4f2b7 AO |
2756 | for (; local_got < end_local_got; |
2757 | ++local_got, ++local_tls_type, ++local_tlsdesc_gotent) | |
161d71a6 | 2758 | { |
67a4f2b7 | 2759 | *local_tlsdesc_gotent = (bfd_vma) -1; |
161d71a6 | 2760 | if (*local_got > 0) |
6725bdbf | 2761 | { |
67a4f2b7 AO |
2762 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
2763 | { | |
6de2ae4a | 2764 | *local_tlsdesc_gotent = htab->elf.sgotplt->size |
67a4f2b7 | 2765 | - elf_i386_compute_jump_table_size (htab); |
6de2ae4a | 2766 | htab->elf.sgotplt->size += 8; |
67a4f2b7 AO |
2767 | *local_got = (bfd_vma) -2; |
2768 | } | |
2769 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2770 | || GOT_TLS_GD_P (*local_tls_type)) | |
2771 | { | |
2772 | *local_got = s->size; | |
2773 | s->size += 4; | |
2774 | if (GOT_TLS_GD_P (*local_tls_type) | |
2775 | || *local_tls_type == GOT_TLS_IE_BOTH) | |
2776 | s->size += 4; | |
2777 | } | |
13ae64f3 | 2778 | if (info->shared |
67a4f2b7 | 2779 | || GOT_TLS_GD_ANY_P (*local_tls_type) |
37e55690 JJ |
2780 | || (*local_tls_type & GOT_TLS_IE)) |
2781 | { | |
2782 | if (*local_tls_type == GOT_TLS_IE_BOTH) | |
eea6121a | 2783 | srel->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2784 | else if (GOT_TLS_GD_P (*local_tls_type) |
2785 | || ! GOT_TLS_GDESC_P (*local_tls_type)) | |
eea6121a | 2786 | srel->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2787 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
6de2ae4a | 2788 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
37e55690 | 2789 | } |
6725bdbf | 2790 | } |
161d71a6 L |
2791 | else |
2792 | *local_got = (bfd_vma) -1; | |
6725bdbf | 2793 | } |
252b5132 | 2794 | } |
6725bdbf | 2795 | |
13ae64f3 JJ |
2796 | if (htab->tls_ldm_got.refcount > 0) |
2797 | { | |
2798 | /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM | |
2799 | relocs. */ | |
6de2ae4a L |
2800 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
2801 | htab->elf.sgot->size += 8; | |
2802 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2803 | } |
2804 | else | |
2805 | htab->tls_ldm_got.offset = -1; | |
2806 | ||
0c715baa AM |
2807 | /* Allocate global sym .plt and .got entries, and space for global |
2808 | sym dynamic relocs. */ | |
eb4ff4d6 | 2809 | elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info); |
252b5132 | 2810 | |
c25bc9fc L |
2811 | /* Allocate .plt and .got entries, and space for local symbols. */ |
2812 | htab_traverse (htab->loc_hash_table, | |
2813 | elf_i386_allocate_local_dynrelocs, | |
2814 | info); | |
2815 | ||
67a4f2b7 AO |
2816 | /* For every jump slot reserved in the sgotplt, reloc_count is |
2817 | incremented. However, when we reserve space for TLS descriptors, | |
2818 | it's not incremented, so in order to compute the space reserved | |
2819 | for them, it suffices to multiply the reloc count by the jump | |
e1f98742 | 2820 | slot size. |
caa0075c | 2821 | |
e1f98742 L |
2822 | PR ld/13302: We start next_irelative_index at the end of .rela.plt |
2823 | so that R_386_IRELATIVE entries come last. */ | |
6de2ae4a | 2824 | if (htab->elf.srelplt) |
e1f98742 L |
2825 | { |
2826 | htab->next_tls_desc_index = htab->elf.srelplt->reloc_count; | |
2827 | htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4; | |
2828 | htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1; | |
2829 | } | |
2830 | else if (htab->elf.irelplt) | |
2831 | htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1; | |
2832 | ||
67a4f2b7 | 2833 | |
a7b16ceb L |
2834 | if (htab->elf.sgotplt) |
2835 | { | |
2836 | /* Don't allocate .got.plt section if there are no GOT nor PLT | |
9a2a56cc | 2837 | entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */ |
9d4b2dba L |
2838 | if ((htab->elf.hgot == NULL |
2839 | || !htab->elf.hgot->ref_regular_nonweak) | |
e28df02b L |
2840 | && (htab->elf.sgotplt->size |
2841 | == get_elf_backend_data (output_bfd)->got_header_size) | |
a7b16ceb L |
2842 | && (htab->elf.splt == NULL |
2843 | || htab->elf.splt->size == 0) | |
2844 | && (htab->elf.sgot == NULL | |
2845 | || htab->elf.sgot->size == 0) | |
2846 | && (htab->elf.iplt == NULL | |
2847 | || htab->elf.iplt->size == 0) | |
2848 | && (htab->elf.igotplt == NULL | |
2849 | || htab->elf.igotplt->size == 0)) | |
2850 | htab->elf.sgotplt->size = 0; | |
2851 | } | |
2852 | ||
9a2a56cc AM |
2853 | |
2854 | if (htab->plt_eh_frame != NULL | |
2855 | && htab->elf.splt != NULL | |
2856 | && htab->elf.splt->size != 0 | |
2857 | && !bfd_is_abs_section (htab->elf.splt->output_section) | |
2858 | && _bfd_elf_eh_frame_present (info)) | |
2859 | htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt); | |
2860 | ||
5a15f56f AM |
2861 | /* We now have determined the sizes of the various dynamic sections. |
2862 | Allocate memory for them. */ | |
b34976b6 | 2863 | relocs = FALSE; |
252b5132 RH |
2864 | for (s = dynobj->sections; s != NULL; s = s->next) |
2865 | { | |
eac338cf PB |
2866 | bfd_boolean strip_section = TRUE; |
2867 | ||
252b5132 RH |
2868 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
2869 | continue; | |
2870 | ||
6de2ae4a | 2871 | if (s == htab->elf.splt |
9a2a56cc | 2872 | || s == htab->elf.sgot) |
252b5132 | 2873 | { |
6725bdbf AM |
2874 | /* Strip this section if we don't need it; see the |
2875 | comment below. */ | |
eac338cf PB |
2876 | /* We'd like to strip these sections if they aren't needed, but if |
2877 | we've exported dynamic symbols from them we must leave them. | |
2878 | It's too late to tell BFD to get rid of the symbols. */ | |
2879 | ||
7325306f | 2880 | if (htab->elf.hplt != NULL) |
eac338cf | 2881 | strip_section = FALSE; |
252b5132 | 2882 | } |
9a2a56cc AM |
2883 | else if (s == htab->elf.sgotplt |
2884 | || s == htab->elf.iplt | |
2885 | || s == htab->elf.igotplt | |
2886 | || s == htab->plt_eh_frame | |
2887 | || s == htab->sdynbss) | |
2888 | { | |
2889 | /* Strip these too. */ | |
2890 | } | |
0112cd26 | 2891 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel")) |
252b5132 | 2892 | { |
6de2ae4a L |
2893 | if (s->size != 0 |
2894 | && s != htab->elf.srelplt | |
2895 | && s != htab->srelplt2) | |
b34976b6 | 2896 | relocs = TRUE; |
252b5132 | 2897 | |
0ac8d2ca AM |
2898 | /* We use the reloc_count field as a counter if we need |
2899 | to copy relocs into the output file. */ | |
5ae0bfb6 | 2900 | s->reloc_count = 0; |
252b5132 | 2901 | } |
6725bdbf | 2902 | else |
252b5132 RH |
2903 | { |
2904 | /* It's not one of our sections, so don't allocate space. */ | |
2905 | continue; | |
2906 | } | |
2907 | ||
c456f082 | 2908 | if (s->size == 0) |
252b5132 | 2909 | { |
0ac8d2ca AM |
2910 | /* If we don't need this section, strip it from the |
2911 | output file. This is mostly to handle .rel.bss and | |
2912 | .rel.plt. We must create both sections in | |
2913 | create_dynamic_sections, because they must be created | |
2914 | before the linker maps input sections to output | |
2915 | sections. The linker does that before | |
2916 | adjust_dynamic_symbol is called, and it is that | |
2917 | function which decides whether anything needs to go | |
2918 | into these sections. */ | |
c456f082 AM |
2919 | if (strip_section) |
2920 | s->flags |= SEC_EXCLUDE; | |
252b5132 RH |
2921 | continue; |
2922 | } | |
2923 | ||
c456f082 AM |
2924 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2925 | continue; | |
2926 | ||
f69da49f AM |
2927 | /* Allocate memory for the section contents. We use bfd_zalloc |
2928 | here in case unused entries are not reclaimed before the | |
2929 | section's contents are written out. This should not happen, | |
2930 | but this way if it does, we get a R_386_NONE reloc instead | |
2931 | of garbage. */ | |
a50b1753 | 2932 | s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size); |
6725bdbf | 2933 | if (s->contents == NULL) |
b34976b6 | 2934 | return FALSE; |
252b5132 RH |
2935 | } |
2936 | ||
e41b3a13 | 2937 | if (htab->plt_eh_frame != NULL |
9a2a56cc AM |
2938 | && htab->plt_eh_frame->contents != NULL) |
2939 | { | |
2940 | memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt, | |
2941 | sizeof (elf_i386_eh_frame_plt)); | |
2942 | bfd_put_32 (dynobj, htab->elf.splt->size, | |
2943 | htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET); | |
2944 | } | |
e41b3a13 | 2945 | |
ebe50bae | 2946 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2947 | { |
2948 | /* Add some entries to the .dynamic section. We fill in the | |
2949 | values later, in elf_i386_finish_dynamic_sections, but we | |
2950 | must add the entries now so that we get the correct size for | |
2951 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2952 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2953 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2954 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2955 | |
36af4a4e | 2956 | if (info->executable) |
252b5132 | 2957 | { |
dc810e39 | 2958 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2959 | return FALSE; |
252b5132 RH |
2960 | } |
2961 | ||
6de2ae4a | 2962 | if (htab->elf.splt->size != 0) |
252b5132 | 2963 | { |
dc810e39 AM |
2964 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2965 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2966 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
2967 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2968 | return FALSE; |
252b5132 RH |
2969 | } |
2970 | ||
2971 | if (relocs) | |
2972 | { | |
dc810e39 AM |
2973 | if (!add_dynamic_entry (DT_REL, 0) |
2974 | || !add_dynamic_entry (DT_RELSZ, 0) | |
2975 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 2976 | return FALSE; |
252b5132 | 2977 | |
0c715baa AM |
2978 | /* If any dynamic relocs apply to a read-only section, |
2979 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 2980 | if ((info->flags & DF_TEXTREL) == 0) |
eb4ff4d6 L |
2981 | elf_link_hash_traverse (&htab->elf, |
2982 | elf_i386_readonly_dynrelocs, info); | |
0c715baa AM |
2983 | |
2984 | if ((info->flags & DF_TEXTREL) != 0) | |
2985 | { | |
2986 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2987 | return FALSE; |
0c715baa | 2988 | } |
252b5132 | 2989 | } |
23209a78 | 2990 | if (get_elf_i386_backend_data (output_bfd)->is_vxworks |
7a2b07ff NS |
2991 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) |
2992 | return FALSE; | |
252b5132 | 2993 | } |
dc810e39 | 2994 | #undef add_dynamic_entry |
252b5132 | 2995 | |
b34976b6 | 2996 | return TRUE; |
252b5132 RH |
2997 | } |
2998 | ||
67a4f2b7 AO |
2999 | static bfd_boolean |
3000 | elf_i386_always_size_sections (bfd *output_bfd, | |
3001 | struct bfd_link_info *info) | |
3002 | { | |
3003 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
3004 | ||
3005 | if (tls_sec) | |
3006 | { | |
3007 | struct elf_link_hash_entry *tlsbase; | |
3008 | ||
3009 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
3010 | "_TLS_MODULE_BASE_", | |
3011 | FALSE, FALSE, FALSE); | |
3012 | ||
3013 | if (tlsbase && tlsbase->type == STT_TLS) | |
3014 | { | |
4dfe6ac6 | 3015 | struct elf_i386_link_hash_table *htab; |
67a4f2b7 AO |
3016 | struct bfd_link_hash_entry *bh = NULL; |
3017 | const struct elf_backend_data *bed | |
3018 | = get_elf_backend_data (output_bfd); | |
3019 | ||
4dfe6ac6 NC |
3020 | htab = elf_i386_hash_table (info); |
3021 | if (htab == NULL) | |
3022 | return FALSE; | |
3023 | ||
67a4f2b7 AO |
3024 | if (!(_bfd_generic_link_add_one_symbol |
3025 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
3026 | tls_sec, 0, NULL, FALSE, | |
3027 | bed->collect, &bh))) | |
3028 | return FALSE; | |
9f03412a | 3029 | |
4dfe6ac6 | 3030 | htab->tls_module_base = bh; |
9f03412a | 3031 | |
67a4f2b7 AO |
3032 | tlsbase = (struct elf_link_hash_entry *)bh; |
3033 | tlsbase->def_regular = 1; | |
3034 | tlsbase->other = STV_HIDDEN; | |
3035 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
3036 | } | |
3037 | } | |
3038 | ||
3039 | return TRUE; | |
3040 | } | |
3041 | ||
38701953 AM |
3042 | /* Set the correct type for an x86 ELF section. We do this by the |
3043 | section name, which is a hack, but ought to work. */ | |
3044 | ||
b34976b6 | 3045 | static bfd_boolean |
55fd94b0 AM |
3046 | elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
3047 | Elf_Internal_Shdr *hdr, | |
3048 | asection *sec) | |
38701953 | 3049 | { |
91d6fa6a | 3050 | const char *name; |
38701953 AM |
3051 | |
3052 | name = bfd_get_section_name (abfd, sec); | |
3053 | ||
3054 | /* This is an ugly, but unfortunately necessary hack that is | |
3055 | needed when producing EFI binaries on x86. It tells | |
3056 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
3057 | containing ELF relocation info. We need this hack in order to | |
3058 | be able to generate ELF binaries that can be translated into | |
3059 | EFI applications (which are essentially COFF objects). Those | |
3060 | files contain a COFF ".reloc" section inside an ELFNN object, | |
3061 | which would normally cause BFD to segfault because it would | |
3062 | attempt to interpret this section as containing relocation | |
3063 | entries for section "oc". With this hack enabled, ".reloc" | |
3064 | will be treated as a normal data section, which will avoid the | |
3065 | segfault. However, you won't be able to create an ELFNN binary | |
3066 | with a section named "oc" that needs relocations, but that's | |
3067 | the kind of ugly side-effects you get when detecting section | |
3068 | types based on their names... In practice, this limitation is | |
3069 | unlikely to bite. */ | |
3070 | if (strcmp (name, ".reloc") == 0) | |
3071 | hdr->sh_type = SHT_PROGBITS; | |
3072 | ||
b34976b6 | 3073 | return TRUE; |
38701953 AM |
3074 | } |
3075 | ||
9f03412a AO |
3076 | /* _TLS_MODULE_BASE_ needs to be treated especially when linking |
3077 | executables. Rather than setting it to the beginning of the TLS | |
3078 | section, we have to set it to the end. This function may be called | |
3079 | multiple times, it is idempotent. */ | |
3080 | ||
3081 | static void | |
eb4ff4d6 | 3082 | elf_i386_set_tls_module_base (struct bfd_link_info *info) |
9f03412a | 3083 | { |
4dfe6ac6 | 3084 | struct elf_i386_link_hash_table *htab; |
9f03412a AO |
3085 | struct bfd_link_hash_entry *base; |
3086 | ||
3087 | if (!info->executable) | |
3088 | return; | |
3089 | ||
4dfe6ac6 NC |
3090 | htab = elf_i386_hash_table (info); |
3091 | if (htab == NULL) | |
3092 | return; | |
9f03412a | 3093 | |
4dfe6ac6 NC |
3094 | base = htab->tls_module_base; |
3095 | if (base == NULL) | |
9f03412a AO |
3096 | return; |
3097 | ||
4dfe6ac6 | 3098 | base->u.def.value = htab->elf.tls_size; |
9f03412a AO |
3099 | } |
3100 | ||
13ae64f3 JJ |
3101 | /* Return the base VMA address which should be subtracted from real addresses |
3102 | when resolving @dtpoff relocation. | |
3103 | This is PT_TLS segment p_vaddr. */ | |
3104 | ||
3105 | static bfd_vma | |
eb4ff4d6 | 3106 | elf_i386_dtpoff_base (struct bfd_link_info *info) |
13ae64f3 | 3107 | { |
e1918d23 AM |
3108 | /* If tls_sec is NULL, we should have signalled an error already. */ |
3109 | if (elf_hash_table (info)->tls_sec == NULL) | |
6a30718d | 3110 | return 0; |
e1918d23 | 3111 | return elf_hash_table (info)->tls_sec->vma; |
13ae64f3 JJ |
3112 | } |
3113 | ||
3114 | /* Return the relocation value for @tpoff relocation | |
3115 | if STT_TLS virtual address is ADDRESS. */ | |
3116 | ||
3117 | static bfd_vma | |
eb4ff4d6 | 3118 | elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address) |
13ae64f3 | 3119 | { |
e1918d23 | 3120 | struct elf_link_hash_table *htab = elf_hash_table (info); |
7dc98aea RO |
3121 | const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd); |
3122 | bfd_vma static_tls_size; | |
13ae64f3 | 3123 | |
e1918d23 AM |
3124 | /* If tls_sec is NULL, we should have signalled an error already. */ |
3125 | if (htab->tls_sec == NULL) | |
6a30718d | 3126 | return 0; |
7dc98aea RO |
3127 | |
3128 | /* Consider special static TLS alignment requirements. */ | |
3129 | static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment); | |
3130 | return static_tls_size + htab->tls_sec->vma - address; | |
13ae64f3 JJ |
3131 | } |
3132 | ||
252b5132 RH |
3133 | /* Relocate an i386 ELF section. */ |
3134 | ||
b34976b6 | 3135 | static bfd_boolean |
55fd94b0 AM |
3136 | elf_i386_relocate_section (bfd *output_bfd, |
3137 | struct bfd_link_info *info, | |
3138 | bfd *input_bfd, | |
3139 | asection *input_section, | |
3140 | bfd_byte *contents, | |
3141 | Elf_Internal_Rela *relocs, | |
3142 | Elf_Internal_Sym *local_syms, | |
3143 | asection **local_sections) | |
252b5132 | 3144 | { |
6725bdbf | 3145 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
3146 | Elf_Internal_Shdr *symtab_hdr; |
3147 | struct elf_link_hash_entry **sym_hashes; | |
3148 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 3149 | bfd_vma *local_tlsdesc_gotents; |
252b5132 RH |
3150 | Elf_Internal_Rela *rel; |
3151 | Elf_Internal_Rela *relend; | |
3348747a | 3152 | bfd_boolean is_vxworks_tls; |
25e762b9 | 3153 | unsigned plt_entry_size; |
252b5132 | 3154 | |
0ffa91dd | 3155 | BFD_ASSERT (is_i386_elf (input_bfd)); |
6bbec505 | 3156 | |
6725bdbf | 3157 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
3158 | if (htab == NULL) |
3159 | return FALSE; | |
0ffa91dd | 3160 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
252b5132 RH |
3161 | sym_hashes = elf_sym_hashes (input_bfd); |
3162 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
67a4f2b7 | 3163 | local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd); |
3348747a NS |
3164 | /* We have to handle relocations in vxworks .tls_vars sections |
3165 | specially, because the dynamic loader is 'weird'. */ | |
23209a78 RM |
3166 | is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks |
3167 | && info->shared | |
3348747a NS |
3168 | && !strcmp (input_section->output_section->name, |
3169 | ".tls_vars")); | |
252b5132 | 3170 | |
eb4ff4d6 | 3171 | elf_i386_set_tls_module_base (info); |
9f03412a | 3172 | |
25e762b9 RM |
3173 | plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd); |
3174 | ||
252b5132 RH |
3175 | rel = relocs; |
3176 | relend = relocs + input_section->reloc_count; | |
3177 | for (; rel < relend; rel++) | |
3178 | { | |
13ae64f3 | 3179 | unsigned int r_type; |
252b5132 RH |
3180 | reloc_howto_type *howto; |
3181 | unsigned long r_symndx; | |
3182 | struct elf_link_hash_entry *h; | |
3183 | Elf_Internal_Sym *sym; | |
3184 | asection *sec; | |
67a4f2b7 | 3185 | bfd_vma off, offplt; |
252b5132 | 3186 | bfd_vma relocation; |
b34976b6 | 3187 | bfd_boolean unresolved_reloc; |
252b5132 | 3188 | bfd_reloc_status_type r; |
1b452ec6 | 3189 | unsigned int indx; |
13ae64f3 | 3190 | int tls_type; |
1788fc08 | 3191 | bfd_vma st_size; |
252b5132 RH |
3192 | |
3193 | r_type = ELF32_R_TYPE (rel->r_info); | |
55fd94b0 AM |
3194 | if (r_type == R_386_GNU_VTINHERIT |
3195 | || r_type == R_386_GNU_VTENTRY) | |
252b5132 | 3196 | continue; |
dc47f327 | 3197 | |
55fd94b0 | 3198 | if ((indx = r_type) >= R_386_standard |
13ae64f3 JJ |
3199 | && ((indx = r_type - R_386_ext_offset) - R_386_standard |
3200 | >= R_386_ext - R_386_standard) | |
3201 | && ((indx = r_type - R_386_tls_offset) - R_386_ext | |
cbe950e9 | 3202 | >= R_386_irelative - R_386_ext)) |
252b5132 | 3203 | { |
6ba842b6 | 3204 | (*_bfd_error_handler) |
d003868e AM |
3205 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), |
3206 | input_bfd, input_section, r_type); | |
252b5132 | 3207 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3208 | return FALSE; |
252b5132 | 3209 | } |
1b452ec6 | 3210 | howto = elf_howto_table + indx; |
252b5132 RH |
3211 | |
3212 | r_symndx = ELF32_R_SYM (rel->r_info); | |
252b5132 RH |
3213 | h = NULL; |
3214 | sym = NULL; | |
3215 | sec = NULL; | |
b34976b6 | 3216 | unresolved_reloc = FALSE; |
252b5132 RH |
3217 | if (r_symndx < symtab_hdr->sh_info) |
3218 | { | |
3219 | sym = local_syms + r_symndx; | |
3220 | sec = local_sections[r_symndx]; | |
3221 | relocation = (sec->output_section->vma | |
3222 | + sec->output_offset | |
3223 | + sym->st_value); | |
1788fc08 | 3224 | st_size = sym->st_size; |
ab96bf03 AM |
3225 | |
3226 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
3227 | && ((sec->flags & SEC_MERGE) != 0 | |
3228 | || (info->relocatable | |
3229 | && sec->output_offset != 0))) | |
f8df10f4 | 3230 | { |
f8df10f4 | 3231 | bfd_vma addend; |
4a335f3d | 3232 | bfd_byte *where = contents + rel->r_offset; |
f8df10f4 | 3233 | |
4a335f3d | 3234 | switch (howto->size) |
f8df10f4 | 3235 | { |
4a335f3d AM |
3236 | case 0: |
3237 | addend = bfd_get_8 (input_bfd, where); | |
3238 | if (howto->pc_relative) | |
3239 | { | |
3240 | addend = (addend ^ 0x80) - 0x80; | |
3241 | addend += 1; | |
3242 | } | |
3243 | break; | |
3244 | case 1: | |
3245 | addend = bfd_get_16 (input_bfd, where); | |
3246 | if (howto->pc_relative) | |
3247 | { | |
3248 | addend = (addend ^ 0x8000) - 0x8000; | |
3249 | addend += 2; | |
3250 | } | |
3251 | break; | |
3252 | case 2: | |
3253 | addend = bfd_get_32 (input_bfd, where); | |
3254 | if (howto->pc_relative) | |
3255 | { | |
3256 | addend = (addend ^ 0x80000000) - 0x80000000; | |
3257 | addend += 4; | |
3258 | } | |
3259 | break; | |
3260 | default: | |
3261 | abort (); | |
f8df10f4 JJ |
3262 | } |
3263 | ||
ab96bf03 AM |
3264 | if (info->relocatable) |
3265 | addend += sec->output_offset; | |
3266 | else | |
3267 | { | |
3268 | asection *msec = sec; | |
3269 | addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, | |
3270 | addend); | |
3271 | addend -= relocation; | |
3272 | addend += msec->output_section->vma + msec->output_offset; | |
3273 | } | |
4a335f3d AM |
3274 | |
3275 | switch (howto->size) | |
3276 | { | |
3277 | case 0: | |
16a10388 | 3278 | /* FIXME: overflow checks. */ |
4a335f3d AM |
3279 | if (howto->pc_relative) |
3280 | addend -= 1; | |
3281 | bfd_put_8 (input_bfd, addend, where); | |
4a335f3d AM |
3282 | break; |
3283 | case 1: | |
3284 | if (howto->pc_relative) | |
3285 | addend -= 2; | |
3286 | bfd_put_16 (input_bfd, addend, where); | |
4a335f3d AM |
3287 | break; |
3288 | case 2: | |
3289 | if (howto->pc_relative) | |
3290 | addend -= 4; | |
3291 | bfd_put_32 (input_bfd, addend, where); | |
3292 | break; | |
3293 | } | |
f8df10f4 | 3294 | } |
1f85278f L |
3295 | else if (!info->relocatable |
3296 | && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
c25bc9fc L |
3297 | { |
3298 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
9fff0c39 L |
3299 | h = elf_i386_get_local_sym_hash (htab, input_bfd, rel, |
3300 | FALSE); | |
c25bc9fc L |
3301 | if (h == NULL) |
3302 | abort (); | |
3303 | ||
23209a78 | 3304 | /* Set STT_GNU_IFUNC symbol value. */ |
c25bc9fc L |
3305 | h->root.u.def.value = sym->st_value; |
3306 | h->root.u.def.section = sec; | |
3307 | } | |
252b5132 RH |
3308 | } |
3309 | else | |
3310 | { | |
3d540e93 | 3311 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 3312 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
ffb2e45b | 3313 | |
b2a8e766 AM |
3314 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3315 | r_symndx, symtab_hdr, sym_hashes, | |
3316 | h, sec, relocation, | |
62d887d4 | 3317 | unresolved_reloc, warned, ignored); |
1788fc08 | 3318 | st_size = h->size; |
252b5132 RH |
3319 | } |
3320 | ||
dbaa2011 | 3321 | if (sec != NULL && discarded_section (sec)) |
0672748a | 3322 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 3323 | rel, 1, relend, howto, 0, contents); |
9635fe29 | 3324 | |
ab96bf03 AM |
3325 | if (info->relocatable) |
3326 | continue; | |
3327 | ||
cbe950e9 L |
3328 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
3329 | it here if it is defined in a non-shared object. */ | |
3330 | if (h != NULL | |
3331 | && h->type == STT_GNU_IFUNC | |
3332 | && h->def_regular) | |
3333 | { | |
3334 | asection *plt, *gotplt, *base_got; | |
3335 | bfd_vma plt_index; | |
4c544807 | 3336 | const char *name; |
cbe950e9 L |
3337 | |
3338 | if ((input_section->flags & SEC_ALLOC) == 0 | |
3339 | || h->plt.offset == (bfd_vma) -1) | |
3340 | abort (); | |
3341 | ||
3342 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
6de2ae4a | 3343 | if (htab->elf.splt != NULL) |
cbe950e9 | 3344 | { |
6de2ae4a L |
3345 | plt = htab->elf.splt; |
3346 | gotplt = htab->elf.sgotplt; | |
cbe950e9 L |
3347 | } |
3348 | else | |
3349 | { | |
6de2ae4a L |
3350 | plt = htab->elf.iplt; |
3351 | gotplt = htab->elf.igotplt; | |
cbe950e9 L |
3352 | } |
3353 | ||
3354 | relocation = (plt->output_section->vma | |
3355 | + plt->output_offset + h->plt.offset); | |
3356 | ||
3357 | switch (r_type) | |
3358 | { | |
3359 | default: | |
4c544807 L |
3360 | if (h->root.root.string) |
3361 | name = h->root.root.string; | |
3362 | else | |
3363 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
3364 | NULL); | |
cbe950e9 L |
3365 | (*_bfd_error_handler) |
3366 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
3367 | "symbol `%s' isn't handled by %s"), input_bfd, | |
3368 | elf_howto_table[r_type].name, | |
4c544807 | 3369 | name, __FUNCTION__); |
cbe950e9 L |
3370 | bfd_set_error (bfd_error_bad_value); |
3371 | return FALSE; | |
3372 | ||
3373 | case R_386_32: | |
710ab287 | 3374 | /* Generate dynamic relcoation only when there is a |
c293fa49 | 3375 | non-GOT reference in a shared object. */ |
710ab287 L |
3376 | if (info->shared && h->non_got_ref) |
3377 | { | |
3378 | Elf_Internal_Rela outrel; | |
710ab287 L |
3379 | asection *sreloc; |
3380 | bfd_vma offset; | |
3381 | ||
c25bc9fc L |
3382 | /* Need a dynamic relocation to get the real function |
3383 | adddress. */ | |
710ab287 L |
3384 | offset = _bfd_elf_section_offset (output_bfd, |
3385 | info, | |
3386 | input_section, | |
3387 | rel->r_offset); | |
3388 | if (offset == (bfd_vma) -1 | |
3389 | || offset == (bfd_vma) -2) | |
3390 | abort (); | |
3391 | ||
3392 | outrel.r_offset = (input_section->output_section->vma | |
3393 | + input_section->output_offset | |
3394 | + offset); | |
3395 | ||
3396 | if (h->dynindx == -1 | |
44c4ea11 L |
3397 | || h->forced_local |
3398 | || info->executable) | |
710ab287 L |
3399 | { |
3400 | /* This symbol is resolved locally. */ | |
56b8aada L |
3401 | outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE); |
3402 | bfd_put_32 (output_bfd, | |
3403 | (h->root.u.def.value | |
3404 | + h->root.u.def.section->output_section->vma | |
3405 | + h->root.u.def.section->output_offset), | |
3406 | contents + offset); | |
710ab287 L |
3407 | } |
3408 | else | |
56b8aada | 3409 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
710ab287 | 3410 | |
6de2ae4a | 3411 | sreloc = htab->elf.irelifunc; |
59d6ffb2 | 3412 | elf_append_rel (output_bfd, sreloc, &outrel); |
710ab287 L |
3413 | |
3414 | /* If this reloc is against an external symbol, we | |
3415 | do not want to fiddle with the addend. Otherwise, | |
3416 | we need to include the symbol value so that it | |
3417 | becomes an addend for the dynamic reloc. For an | |
3418 | internal symbol, we have updated addend. */ | |
56b8aada | 3419 | continue; |
710ab287 | 3420 | } |
d59a60e9 | 3421 | /* FALLTHROUGH */ |
cbe950e9 L |
3422 | case R_386_PC32: |
3423 | case R_386_PLT32: | |
3424 | goto do_relocation; | |
3425 | ||
3426 | case R_386_GOT32: | |
6de2ae4a | 3427 | base_got = htab->elf.sgot; |
cbe950e9 L |
3428 | off = h->got.offset; |
3429 | ||
7afd84dc | 3430 | if (base_got == NULL) |
cbe950e9 L |
3431 | abort (); |
3432 | ||
7afd84dc | 3433 | if (off == (bfd_vma) -1) |
cbe950e9 | 3434 | { |
7afd84dc L |
3435 | /* We can't use h->got.offset here to save state, or |
3436 | even just remember the offset, as finish_dynamic_symbol | |
3437 | would use that as offset into .got. */ | |
6bbec505 | 3438 | |
6de2ae4a | 3439 | if (htab->elf.splt != NULL) |
7afd84dc | 3440 | { |
25e762b9 | 3441 | plt_index = h->plt.offset / plt_entry_size - 1; |
7afd84dc | 3442 | off = (plt_index + 3) * 4; |
6de2ae4a | 3443 | base_got = htab->elf.sgotplt; |
7afd84dc | 3444 | } |
cbe950e9 L |
3445 | else |
3446 | { | |
25e762b9 | 3447 | plt_index = h->plt.offset / plt_entry_size; |
7afd84dc | 3448 | off = plt_index * 4; |
6de2ae4a | 3449 | base_got = htab->elf.igotplt; |
7afd84dc L |
3450 | } |
3451 | ||
3452 | if (h->dynindx == -1 | |
3453 | || h->forced_local | |
3454 | || info->symbolic) | |
3455 | { | |
3456 | /* This references the local defitionion. We must | |
3457 | initialize this entry in the global offset table. | |
3458 | Since the offset must always be a multiple of 8, | |
3459 | we use the least significant bit to record | |
3460 | whether we have initialized it already. | |
3461 | ||
3462 | When doing a dynamic link, we create a .rela.got | |
3463 | relocation entry to initialize the value. This | |
3464 | is done in the finish_dynamic_symbol routine. */ | |
3465 | if ((off & 1) != 0) | |
3466 | off &= ~1; | |
3467 | else | |
3468 | { | |
3469 | bfd_put_32 (output_bfd, relocation, | |
3470 | base_got->contents + off); | |
3471 | h->got.offset |= 1; | |
3472 | } | |
cbe950e9 | 3473 | } |
cbe950e9 | 3474 | |
7afd84dc | 3475 | relocation = off; |
cbe950e9 | 3476 | |
7afd84dc | 3477 | /* Adjust for static executables. */ |
6de2ae4a | 3478 | if (htab->elf.splt == NULL) |
7afd84dc L |
3479 | relocation += gotplt->output_offset; |
3480 | } | |
3481 | else | |
0018b0a3 L |
3482 | { |
3483 | relocation = (base_got->output_section->vma | |
3484 | + base_got->output_offset + off | |
3485 | - gotplt->output_section->vma | |
3486 | - gotplt->output_offset); | |
3487 | /* Adjust for static executables. */ | |
6de2ae4a | 3488 | if (htab->elf.splt == NULL) |
0018b0a3 L |
3489 | relocation += gotplt->output_offset; |
3490 | } | |
3491 | ||
cbe950e9 L |
3492 | goto do_relocation; |
3493 | ||
3494 | case R_386_GOTOFF: | |
3495 | relocation -= (gotplt->output_section->vma | |
3496 | + gotplt->output_offset); | |
3497 | goto do_relocation; | |
3498 | } | |
3499 | } | |
3500 | ||
252b5132 RH |
3501 | switch (r_type) |
3502 | { | |
3503 | case R_386_GOT32: | |
3504 | /* Relocation is to the entry for this symbol in the global | |
3505 | offset table. */ | |
6de2ae4a | 3506 | if (htab->elf.sgot == NULL) |
ffb2e45b | 3507 | abort (); |
252b5132 RH |
3508 | |
3509 | if (h != NULL) | |
3510 | { | |
b34976b6 | 3511 | bfd_boolean dyn; |
252b5132 RH |
3512 | |
3513 | off = h->got.offset; | |
ebe50bae | 3514 | dyn = htab->elf.dynamic_sections_created; |
26e41594 | 3515 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
252b5132 | 3516 | || (info->shared |
586119b3 | 3517 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
ef5aade5 L |
3518 | || (ELF_ST_VISIBILITY (h->other) |
3519 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
3520 | { |
3521 | /* This is actually a static link, or it is a | |
3522 | -Bsymbolic link and the symbol is defined | |
3523 | locally, or the symbol was forced to be local | |
3524 | because of a version file. We must initialize | |
3525 | this entry in the global offset table. Since the | |
3526 | offset must always be a multiple of 4, we use the | |
3527 | least significant bit to record whether we have | |
3528 | initialized it already. | |
3529 | ||
3530 | When doing a dynamic link, we create a .rel.got | |
3531 | relocation entry to initialize the value. This | |
3532 | is done in the finish_dynamic_symbol routine. */ | |
3533 | if ((off & 1) != 0) | |
3534 | off &= ~1; | |
3535 | else | |
3536 | { | |
3537 | bfd_put_32 (output_bfd, relocation, | |
6de2ae4a | 3538 | htab->elf.sgot->contents + off); |
252b5132 RH |
3539 | h->got.offset |= 1; |
3540 | } | |
3541 | } | |
8c694914 | 3542 | else |
b34976b6 | 3543 | unresolved_reloc = FALSE; |
252b5132 RH |
3544 | } |
3545 | else | |
3546 | { | |
ffb2e45b AM |
3547 | if (local_got_offsets == NULL) |
3548 | abort (); | |
252b5132 RH |
3549 | |
3550 | off = local_got_offsets[r_symndx]; | |
3551 | ||
3552 | /* The offset must always be a multiple of 4. We use | |
83be169b AM |
3553 | the least significant bit to record whether we have |
3554 | already generated the necessary reloc. */ | |
252b5132 RH |
3555 | if ((off & 1) != 0) |
3556 | off &= ~1; | |
3557 | else | |
3558 | { | |
6725bdbf | 3559 | bfd_put_32 (output_bfd, relocation, |
6de2ae4a | 3560 | htab->elf.sgot->contents + off); |
252b5132 RH |
3561 | |
3562 | if (info->shared) | |
3563 | { | |
947216bf AM |
3564 | asection *s; |
3565 | Elf_Internal_Rela outrel; | |
252b5132 | 3566 | |
6de2ae4a | 3567 | s = htab->elf.srelgot; |
947216bf | 3568 | if (s == NULL) |
ffb2e45b | 3569 | abort (); |
252b5132 | 3570 | |
6de2ae4a L |
3571 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3572 | + htab->elf.sgot->output_offset | |
252b5132 RH |
3573 | + off); |
3574 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
59d6ffb2 | 3575 | elf_append_rel (output_bfd, s, &outrel); |
252b5132 RH |
3576 | } |
3577 | ||
3578 | local_got_offsets[r_symndx] |= 1; | |
3579 | } | |
252b5132 RH |
3580 | } |
3581 | ||
ffb2e45b AM |
3582 | if (off >= (bfd_vma) -2) |
3583 | abort (); | |
3584 | ||
6de2ae4a L |
3585 | relocation = htab->elf.sgot->output_section->vma |
3586 | + htab->elf.sgot->output_offset + off | |
3587 | - htab->elf.sgotplt->output_section->vma | |
3588 | - htab->elf.sgotplt->output_offset; | |
252b5132 RH |
3589 | break; |
3590 | ||
3591 | case R_386_GOTOFF: | |
3592 | /* Relocation is relative to the start of the global offset | |
3593 | table. */ | |
3594 | ||
90f487df L |
3595 | /* Check to make sure it isn't a protected function symbol |
3596 | for shared library since it may not be local when used | |
41bed6dd L |
3597 | as function address. We also need to make sure that a |
3598 | symbol is defined locally. */ | |
3599 | if (info->shared && h) | |
90f487df | 3600 | { |
41bed6dd L |
3601 | if (!h->def_regular) |
3602 | { | |
3603 | const char *v; | |
3604 | ||
3605 | switch (ELF_ST_VISIBILITY (h->other)) | |
3606 | { | |
3607 | case STV_HIDDEN: | |
3608 | v = _("hidden symbol"); | |
3609 | break; | |
3610 | case STV_INTERNAL: | |
3611 | v = _("internal symbol"); | |
3612 | break; | |
3613 | case STV_PROTECTED: | |
3614 | v = _("protected symbol"); | |
3615 | break; | |
3616 | default: | |
3617 | v = _("symbol"); | |
3618 | break; | |
3619 | } | |
3620 | ||
3621 | (*_bfd_error_handler) | |
3622 | (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"), | |
3623 | input_bfd, v, h->root.root.string); | |
3624 | bfd_set_error (bfd_error_bad_value); | |
3625 | return FALSE; | |
3626 | } | |
3627 | else if (!info->executable | |
bdb892b9 | 3628 | && !SYMBOLIC_BIND (info, h) |
41bed6dd L |
3629 | && h->type == STT_FUNC |
3630 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
3631 | { | |
3632 | (*_bfd_error_handler) | |
3633 | (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"), | |
3634 | input_bfd, h->root.root.string); | |
3635 | bfd_set_error (bfd_error_bad_value); | |
3636 | return FALSE; | |
3637 | } | |
90f487df L |
3638 | } |
3639 | ||
8c37241b JJ |
3640 | /* Note that sgot is not involved in this |
3641 | calculation. We always want the start of .got.plt. If we | |
3642 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
252b5132 RH |
3643 | permitted by the ABI, we might have to change this |
3644 | calculation. */ | |
6de2ae4a L |
3645 | relocation -= htab->elf.sgotplt->output_section->vma |
3646 | + htab->elf.sgotplt->output_offset; | |
252b5132 RH |
3647 | break; |
3648 | ||
3649 | case R_386_GOTPC: | |
3650 | /* Use global offset table as symbol value. */ | |
6de2ae4a L |
3651 | relocation = htab->elf.sgotplt->output_section->vma |
3652 | + htab->elf.sgotplt->output_offset; | |
b34976b6 | 3653 | unresolved_reloc = FALSE; |
252b5132 RH |
3654 | break; |
3655 | ||
3656 | case R_386_PLT32: | |
3657 | /* Relocation is to the entry for this symbol in the | |
3658 | procedure linkage table. */ | |
3659 | ||
dd5724d5 | 3660 | /* Resolve a PLT32 reloc against a local symbol directly, |
83be169b | 3661 | without using the procedure linkage table. */ |
252b5132 RH |
3662 | if (h == NULL) |
3663 | break; | |
3664 | ||
dd5724d5 | 3665 | if (h->plt.offset == (bfd_vma) -1 |
6de2ae4a | 3666 | || htab->elf.splt == NULL) |
252b5132 RH |
3667 | { |
3668 | /* We didn't make a PLT entry for this symbol. This | |
83be169b AM |
3669 | happens when statically linking PIC code, or when |
3670 | using -Bsymbolic. */ | |
252b5132 RH |
3671 | break; |
3672 | } | |
3673 | ||
6de2ae4a L |
3674 | relocation = (htab->elf.splt->output_section->vma |
3675 | + htab->elf.splt->output_offset | |
252b5132 | 3676 | + h->plt.offset); |
b34976b6 | 3677 | unresolved_reloc = FALSE; |
252b5132 RH |
3678 | break; |
3679 | ||
1788fc08 | 3680 | case R_386_SIZE32: |
1788fc08 L |
3681 | /* Set to symbol size. */ |
3682 | relocation = st_size; | |
3683 | /* Fall through. */ | |
3684 | ||
252b5132 RH |
3685 | case R_386_32: |
3686 | case R_386_PC32: | |
3348747a NS |
3687 | if ((input_section->flags & SEC_ALLOC) == 0 |
3688 | || is_vxworks_tls) | |
ec338859 AM |
3689 | break; |
3690 | ||
12d0ee4a | 3691 | if ((info->shared |
ef5aade5 L |
3692 | && (h == NULL |
3693 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3694 | || h->root.type != bfd_link_hash_undefweak) | |
1788fc08 | 3695 | && ((r_type != R_386_PC32 && r_type != R_386_SIZE32) |
f6c52c13 | 3696 | || !SYMBOL_CALLS_LOCAL (info, h))) |
a23b6845 AM |
3697 | || (ELIMINATE_COPY_RELOCS |
3698 | && !info->shared | |
12d0ee4a AM |
3699 | && h != NULL |
3700 | && h->dynindx != -1 | |
f5385ebf AM |
3701 | && !h->non_got_ref |
3702 | && ((h->def_dynamic | |
3703 | && !h->def_regular) | |
28d0b90e | 3704 | || h->root.type == bfd_link_hash_undefweak |
0f88be7a | 3705 | || h->root.type == bfd_link_hash_undefined))) |
252b5132 | 3706 | { |
947216bf | 3707 | Elf_Internal_Rela outrel; |
b34976b6 | 3708 | bfd_boolean skip, relocate; |
0c715baa | 3709 | asection *sreloc; |
252b5132 RH |
3710 | |
3711 | /* When generating a shared object, these relocations | |
3712 | are copied into the output file to be resolved at run | |
3713 | time. */ | |
3714 | ||
b34976b6 AM |
3715 | skip = FALSE; |
3716 | relocate = FALSE; | |
252b5132 | 3717 | |
c629eae0 JJ |
3718 | outrel.r_offset = |
3719 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
3720 | rel->r_offset); | |
3721 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 3722 | skip = TRUE; |
0bb2d96a | 3723 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3724 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
3725 | outrel.r_offset += (input_section->output_section->vma |
3726 | + input_section->output_offset); | |
3727 | ||
3728 | if (skip) | |
0bb2d96a | 3729 | memset (&outrel, 0, sizeof outrel); |
5a15f56f AM |
3730 | else if (h != NULL |
3731 | && h->dynindx != -1 | |
3732 | && (r_type == R_386_PC32 | |
3733 | || !info->shared | |
55255dae | 3734 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 3735 | || !h->def_regular)) |
0bb2d96a | 3736 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
3737 | else |
3738 | { | |
5a15f56f | 3739 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 3740 | relocate = TRUE; |
5a15f56f | 3741 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
252b5132 RH |
3742 | } |
3743 | ||
cbe950e9 | 3744 | sreloc = elf_section_data (input_section)->sreloc; |
e7c33416 | 3745 | |
62d78908 L |
3746 | if (sreloc == NULL || sreloc->contents == NULL) |
3747 | { | |
3748 | r = bfd_reloc_notsupported; | |
3749 | goto check_relocation_error; | |
3750 | } | |
0c715baa | 3751 | |
59d6ffb2 | 3752 | elf_append_rel (output_bfd, sreloc, &outrel); |
252b5132 RH |
3753 | |
3754 | /* If this reloc is against an external symbol, we do | |
3755 | not want to fiddle with the addend. Otherwise, we | |
3756 | need to include the symbol value so that it becomes | |
3757 | an addend for the dynamic reloc. */ | |
0f88be7a | 3758 | if (! relocate) |
252b5132 RH |
3759 | continue; |
3760 | } | |
252b5132 RH |
3761 | break; |
3762 | ||
37e55690 | 3763 | case R_386_TLS_IE: |
1d85728f | 3764 | if (!info->executable) |
37e55690 | 3765 | { |
947216bf | 3766 | Elf_Internal_Rela outrel; |
37e55690 | 3767 | asection *sreloc; |
37e55690 JJ |
3768 | |
3769 | outrel.r_offset = rel->r_offset | |
3770 | + input_section->output_section->vma | |
3771 | + input_section->output_offset; | |
3772 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
3773 | sreloc = elf_section_data (input_section)->sreloc; | |
3774 | if (sreloc == NULL) | |
3775 | abort (); | |
59d6ffb2 | 3776 | elf_append_rel (output_bfd, sreloc, &outrel); |
37e55690 JJ |
3777 | } |
3778 | /* Fall through */ | |
3779 | ||
13ae64f3 | 3780 | case R_386_TLS_GD: |
67a4f2b7 AO |
3781 | case R_386_TLS_GOTDESC: |
3782 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 3783 | case R_386_TLS_IE_32: |
37e55690 | 3784 | case R_386_TLS_GOTIE: |
13ae64f3 JJ |
3785 | tls_type = GOT_UNKNOWN; |
3786 | if (h == NULL && local_got_offsets) | |
3787 | tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx]; | |
3788 | else if (h != NULL) | |
142411ca | 3789 | tls_type = elf_i386_hash_entry(h)->tls_type; |
37e55690 JJ |
3790 | if (tls_type == GOT_TLS_IE) |
3791 | tls_type = GOT_TLS_IE_NEG; | |
142411ca L |
3792 | |
3793 | if (! elf_i386_tls_transition (info, input_bfd, | |
3794 | input_section, contents, | |
3795 | symtab_hdr, sym_hashes, | |
3796 | &r_type, tls_type, rel, | |
4c544807 | 3797 | relend, h, r_symndx)) |
142411ca | 3798 | return FALSE; |
13ae64f3 JJ |
3799 | |
3800 | if (r_type == R_386_TLS_LE_32) | |
3801 | { | |
82e51918 | 3802 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
3803 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
3804 | { | |
142411ca | 3805 | unsigned int type; |
13ae64f3 JJ |
3806 | bfd_vma roff; |
3807 | ||
3808 | /* GD->LE transition. */ | |
13ae64f3 | 3809 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
3810 | if (type == 0x04) |
3811 | { | |
3812 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
3813 | Change it into: | |
3814 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
3815 | (6 byte form of subl). */ | |
13ae64f3 JJ |
3816 | memcpy (contents + rel->r_offset - 3, |
3817 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
142411ca | 3818 | roff = rel->r_offset + 5; |
13ae64f3 JJ |
3819 | } |
3820 | else | |
3821 | { | |
142411ca L |
3822 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop |
3823 | Change it into: | |
3824 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
3825 | (6 byte form of subl). */ | |
3826 | memcpy (contents + rel->r_offset - 2, | |
3827 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
3828 | roff = rel->r_offset + 6; | |
13ae64f3 | 3829 | } |
eb4ff4d6 | 3830 | bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation), |
13ae64f3 | 3831 | contents + roff); |
a3fadc9a | 3832 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
3833 | rel++; |
3834 | continue; | |
3835 | } | |
67a4f2b7 AO |
3836 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
3837 | { | |
3838 | /* GDesc -> LE transition. | |
3839 | It's originally something like: | |
3840 | leal x@tlsdesc(%ebx), %eax | |
3841 | ||
3842 | leal x@ntpoff, %eax | |
3843 | ||
3844 | Registers other than %eax may be set up here. */ | |
3845 | ||
142411ca | 3846 | unsigned int val; |
67a4f2b7 AO |
3847 | bfd_vma roff; |
3848 | ||
67a4f2b7 | 3849 | roff = rel->r_offset; |
67a4f2b7 | 3850 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
3851 | |
3852 | /* Now modify the instruction as appropriate. */ | |
3853 | /* aoliva FIXME: remove the above and xor the byte | |
3854 | below with 0x86. */ | |
3855 | bfd_put_8 (output_bfd, val ^ 0x86, | |
3856 | contents + roff - 1); | |
eb4ff4d6 | 3857 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
67a4f2b7 AO |
3858 | contents + roff); |
3859 | continue; | |
3860 | } | |
3861 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
3862 | { | |
3863 | /* GDesc -> LE transition. | |
3864 | It's originally: | |
3865 | call *(%eax) | |
3866 | Turn it into: | |
142411ca | 3867 | xchg %ax,%ax */ |
67a4f2b7 | 3868 | |
67a4f2b7 | 3869 | bfd_vma roff; |
6bbec505 | 3870 | |
67a4f2b7 | 3871 | roff = rel->r_offset; |
10efb593 | 3872 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
3873 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3874 | continue; | |
3875 | } | |
37e55690 | 3876 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE) |
13ae64f3 | 3877 | { |
142411ca | 3878 | unsigned int val; |
13ae64f3 JJ |
3879 | |
3880 | /* IE->LE transition: | |
37e55690 JJ |
3881 | Originally it can be one of: |
3882 | movl foo, %eax | |
3883 | movl foo, %reg | |
3884 | addl foo, %reg | |
3885 | We change it into: | |
3886 | movl $foo, %eax | |
3887 | movl $foo, %reg | |
3888 | addl $foo, %reg. */ | |
37e55690 | 3889 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
37e55690 JJ |
3890 | if (val == 0xa1) |
3891 | { | |
3892 | /* movl foo, %eax. */ | |
55fd94b0 AM |
3893 | bfd_put_8 (output_bfd, 0xb8, |
3894 | contents + rel->r_offset - 1); | |
37e55690 | 3895 | } |
299bf759 | 3896 | else |
37e55690 | 3897 | { |
142411ca L |
3898 | unsigned int type; |
3899 | ||
55fd94b0 AM |
3900 | type = bfd_get_8 (input_bfd, |
3901 | contents + rel->r_offset - 2); | |
299bf759 | 3902 | switch (type) |
26e41594 | 3903 | { |
299bf759 L |
3904 | case 0x8b: |
3905 | /* movl */ | |
299bf759 L |
3906 | bfd_put_8 (output_bfd, 0xc7, |
3907 | contents + rel->r_offset - 2); | |
3908 | bfd_put_8 (output_bfd, | |
3909 | 0xc0 | ((val >> 3) & 7), | |
3910 | contents + rel->r_offset - 1); | |
3911 | break; | |
3912 | case 0x03: | |
3913 | /* addl */ | |
299bf759 L |
3914 | bfd_put_8 (output_bfd, 0x81, |
3915 | contents + rel->r_offset - 2); | |
3916 | bfd_put_8 (output_bfd, | |
3917 | 0xc0 | ((val >> 3) & 7), | |
3918 | contents + rel->r_offset - 1); | |
3919 | break; | |
3920 | default: | |
3921 | BFD_FAIL (); | |
3922 | break; | |
26e41594 | 3923 | } |
37e55690 | 3924 | } |
eb4ff4d6 | 3925 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
37e55690 JJ |
3926 | contents + rel->r_offset); |
3927 | continue; | |
3928 | } | |
3929 | else | |
3930 | { | |
3931 | unsigned int val, type; | |
3932 | ||
3933 | /* {IE_32,GOTIE}->LE transition: | |
3934 | Originally it can be one of: | |
13ae64f3 | 3935 | subl foo(%reg1), %reg2 |
13ae64f3 | 3936 | movl foo(%reg1), %reg2 |
37e55690 | 3937 | addl foo(%reg1), %reg2 |
13ae64f3 JJ |
3938 | We change it into: |
3939 | subl $foo, %reg2 | |
37e55690 JJ |
3940 | movl $foo, %reg2 (6 byte form) |
3941 | addl $foo, %reg2. */ | |
13ae64f3 JJ |
3942 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
3943 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
13ae64f3 JJ |
3944 | if (type == 0x8b) |
3945 | { | |
3946 | /* movl */ | |
13ae64f3 JJ |
3947 | bfd_put_8 (output_bfd, 0xc7, |
3948 | contents + rel->r_offset - 2); | |
3949 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3950 | contents + rel->r_offset - 1); | |
3951 | } | |
3952 | else if (type == 0x2b) | |
3953 | { | |
3954 | /* subl */ | |
13ae64f3 JJ |
3955 | bfd_put_8 (output_bfd, 0x81, |
3956 | contents + rel->r_offset - 2); | |
3957 | bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), | |
3958 | contents + rel->r_offset - 1); | |
3959 | } | |
37e55690 JJ |
3960 | else if (type == 0x03) |
3961 | { | |
3962 | /* addl */ | |
3963 | bfd_put_8 (output_bfd, 0x81, | |
3964 | contents + rel->r_offset - 2); | |
3965 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3966 | contents + rel->r_offset - 1); | |
3967 | } | |
13ae64f3 JJ |
3968 | else |
3969 | BFD_FAIL (); | |
37e55690 | 3970 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE) |
eb4ff4d6 | 3971 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
37e55690 JJ |
3972 | contents + rel->r_offset); |
3973 | else | |
eb4ff4d6 | 3974 | bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation), |
37e55690 | 3975 | contents + rel->r_offset); |
13ae64f3 JJ |
3976 | continue; |
3977 | } | |
3978 | } | |
3979 | ||
6de2ae4a | 3980 | if (htab->elf.sgot == NULL) |
13ae64f3 JJ |
3981 | abort (); |
3982 | ||
3983 | if (h != NULL) | |
67a4f2b7 AO |
3984 | { |
3985 | off = h->got.offset; | |
3986 | offplt = elf_i386_hash_entry (h)->tlsdesc_got; | |
3987 | } | |
13ae64f3 JJ |
3988 | else |
3989 | { | |
3990 | if (local_got_offsets == NULL) | |
3991 | abort (); | |
3992 | ||
3993 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3994 | offplt = local_tlsdesc_gotents[r_symndx]; |
13ae64f3 JJ |
3995 | } |
3996 | ||
3997 | if ((off & 1) != 0) | |
3998 | off &= ~1; | |
26e41594 | 3999 | else |
13ae64f3 | 4000 | { |
947216bf | 4001 | Elf_Internal_Rela outrel; |
91d6fa6a | 4002 | int dr_type; |
67a4f2b7 | 4003 | asection *sreloc; |
13ae64f3 | 4004 | |
6de2ae4a | 4005 | if (htab->elf.srelgot == NULL) |
13ae64f3 JJ |
4006 | abort (); |
4007 | ||
67a4f2b7 AO |
4008 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
4009 | ||
4010 | if (GOT_TLS_GDESC_P (tls_type)) | |
4011 | { | |
59d6ffb2 | 4012 | bfd_byte *loc; |
67a4f2b7 AO |
4013 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC); |
4014 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8 | |
6de2ae4a L |
4015 | <= htab->elf.sgotplt->size); |
4016 | outrel.r_offset = (htab->elf.sgotplt->output_section->vma | |
4017 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
4018 | + offplt |
4019 | + htab->sgotplt_jump_table_size); | |
6de2ae4a | 4020 | sreloc = htab->elf.srelplt; |
67a4f2b7 | 4021 | loc = sreloc->contents; |
5ae0bfb6 RS |
4022 | loc += (htab->next_tls_desc_index++ |
4023 | * sizeof (Elf32_External_Rel)); | |
67a4f2b7 | 4024 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) |
c3b02097 | 4025 | <= sreloc->contents + sreloc->size); |
67a4f2b7 AO |
4026 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
4027 | if (indx == 0) | |
4028 | { | |
4029 | BFD_ASSERT (! unresolved_reloc); | |
4030 | bfd_put_32 (output_bfd, | |
eb4ff4d6 | 4031 | relocation - elf_i386_dtpoff_base (info), |
6de2ae4a | 4032 | htab->elf.sgotplt->contents + offplt |
67a4f2b7 AO |
4033 | + htab->sgotplt_jump_table_size + 4); |
4034 | } | |
4035 | else | |
4036 | { | |
4037 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 4038 | htab->elf.sgotplt->contents + offplt |
67a4f2b7 AO |
4039 | + htab->sgotplt_jump_table_size + 4); |
4040 | } | |
4041 | } | |
4042 | ||
6de2ae4a | 4043 | sreloc = htab->elf.srelgot; |
67a4f2b7 | 4044 | |
6de2ae4a L |
4045 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
4046 | + htab->elf.sgot->output_offset + off); | |
13ae64f3 | 4047 | |
67a4f2b7 | 4048 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 | 4049 | dr_type = R_386_TLS_DTPMOD32; |
67a4f2b7 AO |
4050 | else if (GOT_TLS_GDESC_P (tls_type)) |
4051 | goto dr_done; | |
37e55690 JJ |
4052 | else if (tls_type == GOT_TLS_IE_POS) |
4053 | dr_type = R_386_TLS_TPOFF; | |
13ae64f3 JJ |
4054 | else |
4055 | dr_type = R_386_TLS_TPOFF32; | |
67a4f2b7 | 4056 | |
37e55690 | 4057 | if (dr_type == R_386_TLS_TPOFF && indx == 0) |
eb4ff4d6 L |
4058 | bfd_put_32 (output_bfd, |
4059 | relocation - elf_i386_dtpoff_base (info), | |
6de2ae4a | 4060 | htab->elf.sgot->contents + off); |
37e55690 | 4061 | else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) |
23209a78 | 4062 | bfd_put_32 (output_bfd, |
eb4ff4d6 | 4063 | elf_i386_dtpoff_base (info) - relocation, |
6de2ae4a | 4064 | htab->elf.sgot->contents + off); |
67a4f2b7 | 4065 | else if (dr_type != R_386_TLS_DESC) |
c366c25e | 4066 | bfd_put_32 (output_bfd, 0, |
6de2ae4a | 4067 | htab->elf.sgot->contents + off); |
13ae64f3 | 4068 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
67a4f2b7 | 4069 | |
59d6ffb2 | 4070 | elf_append_rel (output_bfd, sreloc, &outrel); |
13ae64f3 | 4071 | |
67a4f2b7 | 4072 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 JJ |
4073 | { |
4074 | if (indx == 0) | |
4075 | { | |
82e51918 | 4076 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 | 4077 | bfd_put_32 (output_bfd, |
eb4ff4d6 | 4078 | relocation - elf_i386_dtpoff_base (info), |
6de2ae4a | 4079 | htab->elf.sgot->contents + off + 4); |
13ae64f3 JJ |
4080 | } |
4081 | else | |
4082 | { | |
4083 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 4084 | htab->elf.sgot->contents + off + 4); |
13ae64f3 JJ |
4085 | outrel.r_info = ELF32_R_INFO (indx, |
4086 | R_386_TLS_DTPOFF32); | |
4087 | outrel.r_offset += 4; | |
59d6ffb2 | 4088 | elf_append_rel (output_bfd, sreloc, &outrel); |
13ae64f3 JJ |
4089 | } |
4090 | } | |
37e55690 JJ |
4091 | else if (tls_type == GOT_TLS_IE_BOTH) |
4092 | { | |
4093 | bfd_put_32 (output_bfd, | |
eb4ff4d6 L |
4094 | (indx == 0 |
4095 | ? relocation - elf_i386_dtpoff_base (info) | |
4096 | : 0), | |
6de2ae4a | 4097 | htab->elf.sgot->contents + off + 4); |
37e55690 JJ |
4098 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); |
4099 | outrel.r_offset += 4; | |
59d6ffb2 | 4100 | elf_append_rel (output_bfd, sreloc, &outrel); |
37e55690 | 4101 | } |
13ae64f3 | 4102 | |
67a4f2b7 | 4103 | dr_done: |
13ae64f3 JJ |
4104 | if (h != NULL) |
4105 | h->got.offset |= 1; | |
4106 | else | |
4107 | local_got_offsets[r_symndx] |= 1; | |
4108 | } | |
4109 | ||
67a4f2b7 AO |
4110 | if (off >= (bfd_vma) -2 |
4111 | && ! GOT_TLS_GDESC_P (tls_type)) | |
13ae64f3 | 4112 | abort (); |
67a4f2b7 AO |
4113 | if (r_type == R_386_TLS_GOTDESC |
4114 | || r_type == R_386_TLS_DESC_CALL) | |
4115 | { | |
4116 | relocation = htab->sgotplt_jump_table_size + offplt; | |
4117 | unresolved_reloc = FALSE; | |
4118 | } | |
4119 | else if (r_type == ELF32_R_TYPE (rel->r_info)) | |
13ae64f3 | 4120 | { |
6de2ae4a L |
4121 | bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma |
4122 | + htab->elf.sgotplt->output_offset; | |
4123 | relocation = htab->elf.sgot->output_section->vma | |
4124 | + htab->elf.sgot->output_offset + off - g_o_t; | |
37e55690 JJ |
4125 | if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) |
4126 | && tls_type == GOT_TLS_IE_BOTH) | |
4127 | relocation += 4; | |
4128 | if (r_type == R_386_TLS_IE) | |
8c37241b | 4129 | relocation += g_o_t; |
b34976b6 | 4130 | unresolved_reloc = FALSE; |
13ae64f3 | 4131 | } |
67a4f2b7 | 4132 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
13ae64f3 JJ |
4133 | { |
4134 | unsigned int val, type; | |
4135 | bfd_vma roff; | |
4136 | ||
4137 | /* GD->IE transition. */ | |
13ae64f3 | 4138 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
4139 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
4140 | if (type == 0x04) | |
4141 | { | |
4142 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
4143 | Change it into: | |
4144 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 | 4145 | val >>= 3; |
142411ca | 4146 | roff = rel->r_offset - 3; |
13ae64f3 JJ |
4147 | } |
4148 | else | |
4149 | { | |
4150 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
4151 | Change it into: | |
4152 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 JJ |
4153 | roff = rel->r_offset - 2; |
4154 | } | |
4155 | memcpy (contents + roff, | |
4156 | "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); | |
4157 | contents[roff + 7] = 0x80 | (val & 7); | |
37e55690 JJ |
4158 | /* If foo is used only with foo@gotntpoff(%reg) and |
4159 | foo@indntpoff, but not with foo@gottpoff(%reg), change | |
4160 | subl $foo@gottpoff(%reg), %eax | |
4161 | into: | |
4162 | addl $foo@gotntpoff(%reg), %eax. */ | |
ebcfb3c0 JJ |
4163 | if (tls_type == GOT_TLS_IE_POS) |
4164 | contents[roff + 6] = 0x03; | |
8c37241b | 4165 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4166 | htab->elf.sgot->output_section->vma |
4167 | + htab->elf.sgot->output_offset + off | |
4168 | - htab->elf.sgotplt->output_section->vma | |
4169 | - htab->elf.sgotplt->output_offset, | |
13ae64f3 JJ |
4170 | contents + roff + 8); |
4171 | /* Skip R_386_PLT32. */ | |
4172 | rel++; | |
4173 | continue; | |
4174 | } | |
67a4f2b7 AO |
4175 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
4176 | { | |
4177 | /* GDesc -> IE transition. | |
4178 | It's originally something like: | |
4179 | leal x@tlsdesc(%ebx), %eax | |
4180 | ||
4181 | Change it to: | |
142411ca | 4182 | movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax |
67a4f2b7 AO |
4183 | or: |
4184 | movl x@gottpoff(%ebx), %eax # before negl %eax | |
4185 | ||
4186 | Registers other than %eax may be set up here. */ | |
4187 | ||
67a4f2b7 AO |
4188 | bfd_vma roff; |
4189 | ||
4190 | /* First, make sure it's a leal adding ebx to a 32-bit | |
4191 | offset into any register, although it's probably | |
4192 | almost always going to be eax. */ | |
4193 | roff = rel->r_offset; | |
67a4f2b7 AO |
4194 | |
4195 | /* Now modify the instruction as appropriate. */ | |
4196 | /* To turn a leal into a movl in the form we use it, it | |
4197 | suffices to change the first byte from 0x8d to 0x8b. | |
4198 | aoliva FIXME: should we decide to keep the leal, all | |
4199 | we have to do is remove the statement below, and | |
4200 | adjust the relaxation of R_386_TLS_DESC_CALL. */ | |
4201 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
4202 | ||
4203 | if (tls_type == GOT_TLS_IE_BOTH) | |
4204 | off += 4; | |
4205 | ||
4206 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4207 | htab->elf.sgot->output_section->vma |
4208 | + htab->elf.sgot->output_offset + off | |
4209 | - htab->elf.sgotplt->output_section->vma | |
4210 | - htab->elf.sgotplt->output_offset, | |
67a4f2b7 AO |
4211 | contents + roff); |
4212 | continue; | |
4213 | } | |
4214 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
4215 | { | |
4216 | /* GDesc -> IE transition. | |
4217 | It's originally: | |
4218 | call *(%eax) | |
4219 | ||
4220 | Change it to: | |
142411ca | 4221 | xchg %ax,%ax |
67a4f2b7 AO |
4222 | or |
4223 | negl %eax | |
4224 | depending on how we transformed the TLS_GOTDESC above. | |
4225 | */ | |
4226 | ||
67a4f2b7 AO |
4227 | bfd_vma roff; |
4228 | ||
67a4f2b7 | 4229 | roff = rel->r_offset; |
67a4f2b7 AO |
4230 | |
4231 | /* Now modify the instruction as appropriate. */ | |
4232 | if (tls_type != GOT_TLS_IE_NEG) | |
4233 | { | |
10efb593 L |
4234 | /* xchg %ax,%ax */ |
4235 | bfd_put_8 (output_bfd, 0x66, contents + roff); | |
67a4f2b7 AO |
4236 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
4237 | } | |
4238 | else | |
4239 | { | |
4240 | /* negl %eax */ | |
4241 | bfd_put_8 (output_bfd, 0xf7, contents + roff); | |
4242 | bfd_put_8 (output_bfd, 0xd8, contents + roff + 1); | |
4243 | } | |
4244 | ||
4245 | continue; | |
4246 | } | |
4247 | else | |
4248 | BFD_ASSERT (FALSE); | |
13ae64f3 JJ |
4249 | break; |
4250 | ||
4251 | case R_386_TLS_LDM: | |
142411ca L |
4252 | if (! elf_i386_tls_transition (info, input_bfd, |
4253 | input_section, contents, | |
4254 | symtab_hdr, sym_hashes, | |
4255 | &r_type, GOT_UNKNOWN, rel, | |
4c544807 | 4256 | relend, h, r_symndx)) |
142411ca | 4257 | return FALSE; |
13ae64f3 | 4258 | |
142411ca L |
4259 | if (r_type != R_386_TLS_LDM) |
4260 | { | |
13ae64f3 | 4261 | /* LD->LE transition: |
13ae64f3 JJ |
4262 | leal foo(%reg), %eax; call ___tls_get_addr. |
4263 | We change it into: | |
4264 | movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */ | |
142411ca | 4265 | BFD_ASSERT (r_type == R_386_TLS_LE_32); |
13ae64f3 JJ |
4266 | memcpy (contents + rel->r_offset - 2, |
4267 | "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); | |
a3fadc9a | 4268 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
4269 | rel++; |
4270 | continue; | |
4271 | } | |
4272 | ||
6de2ae4a | 4273 | if (htab->elf.sgot == NULL) |
13ae64f3 JJ |
4274 | abort (); |
4275 | ||
4276 | off = htab->tls_ldm_got.offset; | |
4277 | if (off & 1) | |
4278 | off &= ~1; | |
4279 | else | |
4280 | { | |
947216bf | 4281 | Elf_Internal_Rela outrel; |
13ae64f3 | 4282 | |
6de2ae4a | 4283 | if (htab->elf.srelgot == NULL) |
13ae64f3 JJ |
4284 | abort (); |
4285 | ||
6de2ae4a L |
4286 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
4287 | + htab->elf.sgot->output_offset + off); | |
13ae64f3 JJ |
4288 | |
4289 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 4290 | htab->elf.sgot->contents + off); |
13ae64f3 | 4291 | bfd_put_32 (output_bfd, 0, |
6de2ae4a | 4292 | htab->elf.sgot->contents + off + 4); |
13ae64f3 | 4293 | outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); |
59d6ffb2 | 4294 | elf_append_rel (output_bfd, htab->elf.srelgot, &outrel); |
13ae64f3 JJ |
4295 | htab->tls_ldm_got.offset |= 1; |
4296 | } | |
6de2ae4a L |
4297 | relocation = htab->elf.sgot->output_section->vma |
4298 | + htab->elf.sgot->output_offset + off | |
4299 | - htab->elf.sgotplt->output_section->vma | |
4300 | - htab->elf.sgotplt->output_offset; | |
b34976b6 | 4301 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
4302 | break; |
4303 | ||
4304 | case R_386_TLS_LDO_32: | |
959b0961 | 4305 | if (!info->executable || (input_section->flags & SEC_CODE) == 0) |
eb4ff4d6 | 4306 | relocation -= elf_i386_dtpoff_base (info); |
13ae64f3 JJ |
4307 | else |
4308 | /* When converting LDO to LE, we must negate. */ | |
eb4ff4d6 | 4309 | relocation = -elf_i386_tpoff (info, relocation); |
13ae64f3 JJ |
4310 | break; |
4311 | ||
4312 | case R_386_TLS_LE_32: | |
13ae64f3 | 4313 | case R_386_TLS_LE: |
1d85728f | 4314 | if (!info->executable) |
37e55690 | 4315 | { |
947216bf | 4316 | Elf_Internal_Rela outrel; |
37e55690 | 4317 | asection *sreloc; |
37e55690 JJ |
4318 | |
4319 | outrel.r_offset = rel->r_offset | |
4320 | + input_section->output_section->vma | |
4321 | + input_section->output_offset; | |
4322 | if (h != NULL && h->dynindx != -1) | |
4323 | indx = h->dynindx; | |
4324 | else | |
4325 | indx = 0; | |
4326 | if (r_type == R_386_TLS_LE_32) | |
4327 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); | |
4328 | else | |
4329 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
4330 | sreloc = elf_section_data (input_section)->sreloc; | |
4331 | if (sreloc == NULL) | |
4332 | abort (); | |
59d6ffb2 | 4333 | elf_append_rel (output_bfd, sreloc, &outrel); |
37e55690 JJ |
4334 | if (indx) |
4335 | continue; | |
4336 | else if (r_type == R_386_TLS_LE_32) | |
eb4ff4d6 | 4337 | relocation = elf_i386_dtpoff_base (info) - relocation; |
37e55690 | 4338 | else |
eb4ff4d6 | 4339 | relocation -= elf_i386_dtpoff_base (info); |
37e55690 JJ |
4340 | } |
4341 | else if (r_type == R_386_TLS_LE_32) | |
eb4ff4d6 | 4342 | relocation = elf_i386_tpoff (info, relocation); |
37e55690 | 4343 | else |
eb4ff4d6 | 4344 | relocation = -elf_i386_tpoff (info, relocation); |
13ae64f3 JJ |
4345 | break; |
4346 | ||
252b5132 RH |
4347 | default: |
4348 | break; | |
4349 | } | |
4350 | ||
239e1f3a AM |
4351 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
4352 | because such sections are not SEC_ALLOC and thus ld.so will | |
4353 | not process them. */ | |
8c694914 | 4354 | if (unresolved_reloc |
239e1f3a | 4355 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
4356 | && h->def_dynamic) |
4357 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
4358 | rel->r_offset) != (bfd_vma) -1) | |
6a30718d JJ |
4359 | { |
4360 | (*_bfd_error_handler) | |
843fe662 | 4361 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
4362 | input_bfd, |
4363 | input_section, | |
6a30718d | 4364 | (long) rel->r_offset, |
843fe662 | 4365 | howto->name, |
6a30718d | 4366 | h->root.root.string); |
b34976b6 | 4367 | return FALSE; |
6a30718d | 4368 | } |
83be169b | 4369 | |
cbe950e9 | 4370 | do_relocation: |
252b5132 RH |
4371 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
4372 | contents, rel->r_offset, | |
55fd94b0 | 4373 | relocation, 0); |
252b5132 | 4374 | |
62d78908 | 4375 | check_relocation_error: |
cf5c0c5b | 4376 | if (r != bfd_reloc_ok) |
252b5132 | 4377 | { |
cf5c0c5b | 4378 | const char *name; |
ffb2e45b | 4379 | |
cf5c0c5b AM |
4380 | if (h != NULL) |
4381 | name = h->root.root.string; | |
4382 | else | |
4383 | { | |
4384 | name = bfd_elf_string_from_elf_section (input_bfd, | |
4385 | symtab_hdr->sh_link, | |
4386 | sym->st_name); | |
4387 | if (name == NULL) | |
b34976b6 | 4388 | return FALSE; |
cf5c0c5b AM |
4389 | if (*name == '\0') |
4390 | name = bfd_section_name (input_bfd, sec); | |
4391 | } | |
ffb2e45b | 4392 | |
cf5c0c5b AM |
4393 | if (r == bfd_reloc_overflow) |
4394 | { | |
cf5c0c5b | 4395 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
4396 | (info, (h ? &h->root : NULL), name, howto->name, |
4397 | (bfd_vma) 0, input_bfd, input_section, | |
4398 | rel->r_offset))) | |
b34976b6 | 4399 | return FALSE; |
cf5c0c5b AM |
4400 | } |
4401 | else | |
4402 | { | |
4403 | (*_bfd_error_handler) | |
d003868e AM |
4404 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
4405 | input_bfd, input_section, | |
cf5c0c5b | 4406 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 4407 | return FALSE; |
cf5c0c5b | 4408 | } |
252b5132 RH |
4409 | } |
4410 | } | |
4411 | ||
b34976b6 | 4412 | return TRUE; |
252b5132 RH |
4413 | } |
4414 | ||
4415 | /* Finish up dynamic symbol handling. We set the contents of various | |
4416 | dynamic sections here. */ | |
4417 | ||
b34976b6 | 4418 | static bfd_boolean |
55fd94b0 AM |
4419 | elf_i386_finish_dynamic_symbol (bfd *output_bfd, |
4420 | struct bfd_link_info *info, | |
4421 | struct elf_link_hash_entry *h, | |
4422 | Elf_Internal_Sym *sym) | |
252b5132 | 4423 | { |
6725bdbf | 4424 | struct elf_i386_link_hash_table *htab; |
25e762b9 RM |
4425 | unsigned plt_entry_size; |
4426 | const struct elf_i386_backend_data *abed; | |
252b5132 | 4427 | |
6725bdbf | 4428 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
4429 | if (htab == NULL) |
4430 | return FALSE; | |
252b5132 | 4431 | |
25e762b9 RM |
4432 | abed = get_elf_i386_backend_data (output_bfd); |
4433 | plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd); | |
4434 | ||
252b5132 RH |
4435 | if (h->plt.offset != (bfd_vma) -1) |
4436 | { | |
252b5132 RH |
4437 | bfd_vma plt_index; |
4438 | bfd_vma got_offset; | |
947216bf AM |
4439 | Elf_Internal_Rela rel; |
4440 | bfd_byte *loc; | |
cbe950e9 L |
4441 | asection *plt, *gotplt, *relplt; |
4442 | ||
4443 | /* When building a static executable, use .iplt, .igot.plt and | |
4444 | .rel.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 4445 | if (htab->elf.splt != NULL) |
cbe950e9 | 4446 | { |
6de2ae4a L |
4447 | plt = htab->elf.splt; |
4448 | gotplt = htab->elf.sgotplt; | |
4449 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
4450 | } |
4451 | else | |
4452 | { | |
6de2ae4a L |
4453 | plt = htab->elf.iplt; |
4454 | gotplt = htab->elf.igotplt; | |
4455 | relplt = htab->elf.irelplt; | |
cbe950e9 | 4456 | } |
252b5132 RH |
4457 | |
4458 | /* This symbol has an entry in the procedure linkage table. Set | |
4459 | it up. */ | |
4460 | ||
cbe950e9 L |
4461 | if ((h->dynindx == -1 |
4462 | && !((h->forced_local || info->executable) | |
4463 | && h->def_regular | |
4464 | && h->type == STT_GNU_IFUNC)) | |
4465 | || plt == NULL | |
4466 | || gotplt == NULL | |
4467 | || relplt == NULL) | |
cec7f46a | 4468 | abort (); |
252b5132 RH |
4469 | |
4470 | /* Get the index in the procedure linkage table which | |
4471 | corresponds to this symbol. This is the index of this symbol | |
4472 | in all the symbols for which we are making plt entries. The | |
cbe950e9 | 4473 | first entry in the procedure linkage table is reserved. |
252b5132 | 4474 | |
cbe950e9 | 4475 | Get the offset into the .got table of the entry that |
252b5132 | 4476 | corresponds to this function. Each .got entry is 4 bytes. |
cbe950e9 | 4477 | The first three are reserved. |
6bbec505 | 4478 | |
cbe950e9 L |
4479 | For static executables, we don't reserve anything. */ |
4480 | ||
6de2ae4a | 4481 | if (plt == htab->elf.splt) |
cbe950e9 | 4482 | { |
e1f98742 L |
4483 | got_offset = h->plt.offset / plt_entry_size - 1; |
4484 | got_offset = (got_offset + 3) * 4; | |
cbe950e9 L |
4485 | } |
4486 | else | |
4487 | { | |
e1f98742 L |
4488 | got_offset = h->plt.offset / plt_entry_size; |
4489 | got_offset = got_offset * 4; | |
cbe950e9 | 4490 | } |
252b5132 RH |
4491 | |
4492 | /* Fill in the entry in the procedure linkage table. */ | |
4493 | if (! info->shared) | |
4494 | { | |
25e762b9 RM |
4495 | memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry, |
4496 | abed->plt->plt_entry_size); | |
252b5132 | 4497 | bfd_put_32 (output_bfd, |
cbe950e9 L |
4498 | (gotplt->output_section->vma |
4499 | + gotplt->output_offset | |
252b5132 | 4500 | + got_offset), |
25e762b9 RM |
4501 | plt->contents + h->plt.offset |
4502 | + abed->plt->plt_got_offset); | |
eac338cf | 4503 | |
25e762b9 | 4504 | if (abed->is_vxworks) |
eac338cf PB |
4505 | { |
4506 | int s, k, reloc_index; | |
4507 | ||
4508 | /* Create the R_386_32 relocation referencing the GOT | |
4509 | for this PLT entry. */ | |
4510 | ||
4511 | /* S: Current slot number (zero-based). */ | |
25e762b9 RM |
4512 | s = ((h->plt.offset - abed->plt->plt_entry_size) |
4513 | / abed->plt->plt_entry_size); | |
eac338cf PB |
4514 | /* K: Number of relocations for PLTResolve. */ |
4515 | if (info->shared) | |
4516 | k = PLTRESOLVE_RELOCS_SHLIB; | |
4517 | else | |
4518 | k = PLTRESOLVE_RELOCS; | |
4519 | /* Skip the PLTresolve relocations, and the relocations for | |
4520 | the other PLT slots. */ | |
4521 | reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS; | |
4522 | loc = (htab->srelplt2->contents + reloc_index | |
4523 | * sizeof (Elf32_External_Rel)); | |
4524 | ||
6de2ae4a L |
4525 | rel.r_offset = (htab->elf.splt->output_section->vma |
4526 | + htab->elf.splt->output_offset | |
eac338cf | 4527 | + h->plt.offset + 2), |
7325306f | 4528 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4529 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
4530 | ||
4531 | /* Create the R_386_32 relocation referencing the beginning of | |
4532 | the PLT for this GOT entry. */ | |
6de2ae4a L |
4533 | rel.r_offset = (htab->elf.sgotplt->output_section->vma |
4534 | + htab->elf.sgotplt->output_offset | |
eac338cf | 4535 | + got_offset); |
7325306f | 4536 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf | 4537 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
13ca3149 | 4538 | loc + sizeof (Elf32_External_Rel)); |
eac338cf | 4539 | } |
252b5132 RH |
4540 | } |
4541 | else | |
4542 | { | |
25e762b9 RM |
4543 | memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry, |
4544 | abed->plt->plt_entry_size); | |
252b5132 | 4545 | bfd_put_32 (output_bfd, got_offset, |
25e762b9 RM |
4546 | plt->contents + h->plt.offset |
4547 | + abed->plt->plt_got_offset); | |
252b5132 RH |
4548 | } |
4549 | ||
252b5132 RH |
4550 | /* Fill in the entry in the global offset table. */ |
4551 | bfd_put_32 (output_bfd, | |
cbe950e9 L |
4552 | (plt->output_section->vma |
4553 | + plt->output_offset | |
252b5132 | 4554 | + h->plt.offset |
25e762b9 | 4555 | + abed->plt->plt_lazy_offset), |
cbe950e9 | 4556 | gotplt->contents + got_offset); |
252b5132 RH |
4557 | |
4558 | /* Fill in the entry in the .rel.plt section. */ | |
cbe950e9 L |
4559 | rel.r_offset = (gotplt->output_section->vma |
4560 | + gotplt->output_offset | |
252b5132 | 4561 | + got_offset); |
cbe950e9 L |
4562 | if (h->dynindx == -1 |
4563 | || ((info->executable | |
4564 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
4565 | && h->def_regular | |
4566 | && h->type == STT_GNU_IFUNC)) | |
4567 | { | |
4568 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
4569 | R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend | |
4570 | in the .got.plt section. */ | |
4571 | bfd_put_32 (output_bfd, | |
23209a78 | 4572 | (h->root.u.def.value |
cbe950e9 L |
4573 | + h->root.u.def.section->output_section->vma |
4574 | + h->root.u.def.section->output_offset), | |
4575 | gotplt->contents + got_offset); | |
4576 | rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE); | |
e1f98742 L |
4577 | /* R_386_IRELATIVE comes last. */ |
4578 | plt_index = htab->next_irelative_index--; | |
cbe950e9 L |
4579 | } |
4580 | else | |
e1f98742 L |
4581 | { |
4582 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); | |
4583 | plt_index = htab->next_jump_slot_index++; | |
4584 | } | |
cbe950e9 | 4585 | loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel); |
0ac8d2ca | 4586 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 | 4587 | |
e1f98742 L |
4588 | /* Don't fill PLT entry for static executables. */ |
4589 | if (plt == htab->elf.splt) | |
4590 | { | |
4591 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel), | |
4592 | plt->contents + h->plt.offset | |
4593 | + abed->plt->plt_reloc_offset); | |
4594 | bfd_put_32 (output_bfd, - (h->plt.offset | |
4595 | + abed->plt->plt_plt_offset + 4), | |
4596 | plt->contents + h->plt.offset | |
4597 | + abed->plt->plt_plt_offset); | |
4598 | } | |
4599 | ||
f5385ebf | 4600 | if (!h->def_regular) |
252b5132 RH |
4601 | { |
4602 | /* Mark the symbol as undefined, rather than as defined in | |
c6585bbb JJ |
4603 | the .plt section. Leave the value if there were any |
4604 | relocations where pointer equality matters (this is a clue | |
51b64d56 AM |
4605 | for the dynamic linker, to make function pointer |
4606 | comparisons work between an application and shared | |
c6585bbb JJ |
4607 | library), otherwise set it to zero. If a function is only |
4608 | called from a binary, there is no need to slow down | |
4609 | shared libraries because of that. */ | |
252b5132 | 4610 | sym->st_shndx = SHN_UNDEF; |
f5385ebf | 4611 | if (!h->pointer_equality_needed) |
c6585bbb | 4612 | sym->st_value = 0; |
252b5132 RH |
4613 | } |
4614 | } | |
4615 | ||
13ae64f3 | 4616 | if (h->got.offset != (bfd_vma) -1 |
67a4f2b7 | 4617 | && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type) |
37e55690 | 4618 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0) |
252b5132 | 4619 | { |
947216bf | 4620 | Elf_Internal_Rela rel; |
252b5132 RH |
4621 | |
4622 | /* This symbol has an entry in the global offset table. Set it | |
4623 | up. */ | |
4624 | ||
6de2ae4a | 4625 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
ffb2e45b | 4626 | abort (); |
252b5132 | 4627 | |
6de2ae4a L |
4628 | rel.r_offset = (htab->elf.sgot->output_section->vma |
4629 | + htab->elf.sgot->output_offset | |
dc810e39 | 4630 | + (h->got.offset & ~(bfd_vma) 1)); |
252b5132 | 4631 | |
dd5724d5 AM |
4632 | /* If this is a static link, or it is a -Bsymbolic link and the |
4633 | symbol is defined locally or was forced to be local because | |
4634 | of a version file, we just want to emit a RELATIVE reloc. | |
252b5132 RH |
4635 | The entry in the global offset table will already have been |
4636 | initialized in the relocate_section function. */ | |
710ab287 | 4637 | if (h->def_regular |
0018b0a3 L |
4638 | && h->type == STT_GNU_IFUNC) |
4639 | { | |
710ab287 L |
4640 | if (info->shared) |
4641 | { | |
4642 | /* Generate R_386_GLOB_DAT. */ | |
4643 | goto do_glob_dat; | |
4644 | } | |
4645 | else | |
4646 | { | |
cd2b2c10 L |
4647 | asection *plt; |
4648 | ||
710ab287 L |
4649 | if (!h->pointer_equality_needed) |
4650 | abort (); | |
4651 | ||
4652 | /* For non-shared object, we can't use .got.plt, which | |
4653 | contains the real function addres if we need pointer | |
4654 | equality. We load the GOT entry with the PLT entry. */ | |
cd2b2c10 | 4655 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
710ab287 L |
4656 | bfd_put_32 (output_bfd, |
4657 | (plt->output_section->vma | |
4658 | + plt->output_offset + h->plt.offset), | |
6de2ae4a | 4659 | htab->elf.sgot->contents + h->got.offset); |
710ab287 L |
4660 | return TRUE; |
4661 | } | |
0018b0a3 L |
4662 | } |
4663 | else if (info->shared | |
4664 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
dd5724d5 | 4665 | { |
6725bdbf | 4666 | BFD_ASSERT((h->got.offset & 1) != 0); |
dd5724d5 AM |
4667 | rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
4668 | } | |
252b5132 RH |
4669 | else |
4670 | { | |
dd5724d5 | 4671 | BFD_ASSERT((h->got.offset & 1) == 0); |
710ab287 | 4672 | do_glob_dat: |
6725bdbf | 4673 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
6de2ae4a | 4674 | htab->elf.sgot->contents + h->got.offset); |
252b5132 RH |
4675 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); |
4676 | } | |
4677 | ||
59d6ffb2 | 4678 | elf_append_rel (output_bfd, htab->elf.srelgot, &rel); |
252b5132 RH |
4679 | } |
4680 | ||
f5385ebf | 4681 | if (h->needs_copy) |
252b5132 | 4682 | { |
947216bf | 4683 | Elf_Internal_Rela rel; |
252b5132 RH |
4684 | |
4685 | /* This symbol needs a copy reloc. Set it up. */ | |
4686 | ||
ffb2e45b AM |
4687 | if (h->dynindx == -1 |
4688 | || (h->root.type != bfd_link_hash_defined | |
4689 | && h->root.type != bfd_link_hash_defweak) | |
4690 | || htab->srelbss == NULL) | |
4691 | abort (); | |
252b5132 RH |
4692 | |
4693 | rel.r_offset = (h->root.u.def.value | |
4694 | + h->root.u.def.section->output_section->vma | |
4695 | + h->root.u.def.section->output_offset); | |
4696 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); | |
59d6ffb2 | 4697 | elf_append_rel (output_bfd, htab->srelbss, &rel); |
252b5132 RH |
4698 | } |
4699 | ||
b34976b6 | 4700 | return TRUE; |
252b5132 RH |
4701 | } |
4702 | ||
c25bc9fc L |
4703 | /* Finish up local dynamic symbol handling. We set the contents of |
4704 | various dynamic sections here. */ | |
4705 | ||
4706 | static bfd_boolean | |
4707 | elf_i386_finish_local_dynamic_symbol (void **slot, void *inf) | |
4708 | { | |
4709 | struct elf_link_hash_entry *h | |
4710 | = (struct elf_link_hash_entry *) *slot; | |
4711 | struct bfd_link_info *info | |
23209a78 | 4712 | = (struct bfd_link_info *) inf; |
c25bc9fc L |
4713 | |
4714 | return elf_i386_finish_dynamic_symbol (info->output_bfd, info, | |
4715 | h, NULL); | |
4716 | } | |
4717 | ||
38701953 AM |
4718 | /* Used to decide how to sort relocs in an optimal manner for the |
4719 | dynamic linker, before writing them out. */ | |
4720 | ||
4721 | static enum elf_reloc_type_class | |
7e612e98 AM |
4722 | elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4723 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
4724 | const Elf_Internal_Rela *rela) | |
38701953 | 4725 | { |
55fd94b0 | 4726 | switch (ELF32_R_TYPE (rela->r_info)) |
38701953 AM |
4727 | { |
4728 | case R_386_RELATIVE: | |
4729 | return reloc_class_relative; | |
4730 | case R_386_JUMP_SLOT: | |
4731 | return reloc_class_plt; | |
4732 | case R_386_COPY: | |
4733 | return reloc_class_copy; | |
4734 | default: | |
4735 | return reloc_class_normal; | |
4736 | } | |
4737 | } | |
4738 | ||
252b5132 RH |
4739 | /* Finish up the dynamic sections. */ |
4740 | ||
b34976b6 | 4741 | static bfd_boolean |
55fd94b0 AM |
4742 | elf_i386_finish_dynamic_sections (bfd *output_bfd, |
4743 | struct bfd_link_info *info) | |
252b5132 | 4744 | { |
6725bdbf | 4745 | struct elf_i386_link_hash_table *htab; |
252b5132 | 4746 | bfd *dynobj; |
252b5132 | 4747 | asection *sdyn; |
25e762b9 | 4748 | const struct elf_i386_backend_data *abed; |
252b5132 | 4749 | |
6725bdbf | 4750 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
4751 | if (htab == NULL) |
4752 | return FALSE; | |
4753 | ||
ebe50bae | 4754 | dynobj = htab->elf.dynobj; |
3d4d4302 | 4755 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
25e762b9 | 4756 | abed = get_elf_i386_backend_data (output_bfd); |
252b5132 | 4757 | |
ebe50bae | 4758 | if (htab->elf.dynamic_sections_created) |
252b5132 | 4759 | { |
252b5132 RH |
4760 | Elf32_External_Dyn *dyncon, *dynconend; |
4761 | ||
6de2ae4a | 4762 | if (sdyn == NULL || htab->elf.sgot == NULL) |
ffb2e45b | 4763 | abort (); |
252b5132 RH |
4764 | |
4765 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4766 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4767 | for (; dyncon < dynconend; dyncon++) |
4768 | { | |
4769 | Elf_Internal_Dyn dyn; | |
51b64d56 | 4770 | asection *s; |
252b5132 RH |
4771 | |
4772 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4773 | ||
4774 | switch (dyn.d_tag) | |
4775 | { | |
4776 | default: | |
25e762b9 RM |
4777 | if (abed->is_vxworks |
4778 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
7a2b07ff | 4779 | break; |
0ac8d2ca | 4780 | continue; |
252b5132 RH |
4781 | |
4782 | case DT_PLTGOT: | |
6de2ae4a | 4783 | s = htab->elf.sgotplt; |
8c37241b | 4784 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
6725bdbf AM |
4785 | break; |
4786 | ||
252b5132 | 4787 | case DT_JMPREL: |
6de2ae4a | 4788 | s = htab->elf.srelplt; |
6348e046 | 4789 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
252b5132 RH |
4790 | break; |
4791 | ||
4792 | case DT_PLTRELSZ: | |
6de2ae4a | 4793 | s = htab->elf.srelplt; |
eea6121a | 4794 | dyn.d_un.d_val = s->size; |
252b5132 RH |
4795 | break; |
4796 | ||
4797 | case DT_RELSZ: | |
4798 | /* My reading of the SVR4 ABI indicates that the | |
4799 | procedure linkage table relocs (DT_JMPREL) should be | |
4800 | included in the overall relocs (DT_REL). This is | |
4801 | what Solaris does. However, UnixWare can not handle | |
4802 | that case. Therefore, we override the DT_RELSZ entry | |
6348e046 | 4803 | here to make it not include the JMPREL relocs. */ |
6de2ae4a | 4804 | s = htab->elf.srelplt; |
6348e046 AM |
4805 | if (s == NULL) |
4806 | continue; | |
eea6121a | 4807 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
4808 | break; |
4809 | ||
4810 | case DT_REL: | |
4811 | /* We may not be using the standard ELF linker script. | |
4812 | If .rel.plt is the first .rel section, we adjust | |
4813 | DT_REL to not include it. */ | |
6de2ae4a | 4814 | s = htab->elf.srelplt; |
6348e046 AM |
4815 | if (s == NULL) |
4816 | continue; | |
4817 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
4818 | continue; | |
eea6121a | 4819 | dyn.d_un.d_ptr += s->size; |
252b5132 RH |
4820 | break; |
4821 | } | |
0ac8d2ca AM |
4822 | |
4823 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
4824 | } |
4825 | ||
4826 | /* Fill in the first entry in the procedure linkage table. */ | |
6de2ae4a | 4827 | if (htab->elf.splt && htab->elf.splt->size > 0) |
252b5132 RH |
4828 | { |
4829 | if (info->shared) | |
eac338cf | 4830 | { |
25e762b9 RM |
4831 | memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry, |
4832 | abed->plt->plt0_entry_size); | |
4833 | memset (htab->elf.splt->contents + abed->plt->plt0_entry_size, | |
4834 | abed->plt0_pad_byte, | |
4835 | abed->plt->plt_entry_size - abed->plt->plt0_entry_size); | |
eac338cf | 4836 | } |
252b5132 RH |
4837 | else |
4838 | { | |
25e762b9 RM |
4839 | memcpy (htab->elf.splt->contents, abed->plt->plt0_entry, |
4840 | abed->plt->plt0_entry_size); | |
4841 | memset (htab->elf.splt->contents + abed->plt->plt0_entry_size, | |
4842 | abed->plt0_pad_byte, | |
4843 | abed->plt->plt_entry_size - abed->plt->plt0_entry_size); | |
252b5132 | 4844 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4845 | (htab->elf.sgotplt->output_section->vma |
4846 | + htab->elf.sgotplt->output_offset | |
6725bdbf | 4847 | + 4), |
25e762b9 RM |
4848 | htab->elf.splt->contents |
4849 | + abed->plt->plt0_got1_offset); | |
252b5132 | 4850 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4851 | (htab->elf.sgotplt->output_section->vma |
4852 | + htab->elf.sgotplt->output_offset | |
6725bdbf | 4853 | + 8), |
25e762b9 RM |
4854 | htab->elf.splt->contents |
4855 | + abed->plt->plt0_got2_offset); | |
eac338cf | 4856 | |
25e762b9 | 4857 | if (abed->is_vxworks) |
eac338cf PB |
4858 | { |
4859 | Elf_Internal_Rela rel; | |
7325306f | 4860 | |
eac338cf PB |
4861 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4. |
4862 | On IA32 we use REL relocations so the addend goes in | |
4863 | the PLT directly. */ | |
6de2ae4a L |
4864 | rel.r_offset = (htab->elf.splt->output_section->vma |
4865 | + htab->elf.splt->output_offset | |
25e762b9 | 4866 | + abed->plt->plt0_got1_offset); |
7325306f | 4867 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4868 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
4869 | htab->srelplt2->contents); | |
4870 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
6de2ae4a L |
4871 | rel.r_offset = (htab->elf.splt->output_section->vma |
4872 | + htab->elf.splt->output_offset | |
25e762b9 | 4873 | + abed->plt->plt0_got2_offset); |
7325306f | 4874 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4875 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
4876 | htab->srelplt2->contents + | |
4877 | sizeof (Elf32_External_Rel)); | |
4878 | } | |
252b5132 RH |
4879 | } |
4880 | ||
4881 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
4882 | really seem like the right value. */ | |
6de2ae4a | 4883 | elf_section_data (htab->elf.splt->output_section) |
6725bdbf | 4884 | ->this_hdr.sh_entsize = 4; |
eac338cf PB |
4885 | |
4886 | /* Correct the .rel.plt.unloaded relocations. */ | |
25e762b9 | 4887 | if (abed->is_vxworks && !info->shared) |
eac338cf | 4888 | { |
25e762b9 RM |
4889 | int num_plts = (htab->elf.splt->size |
4890 | / abed->plt->plt_entry_size) - 1; | |
4c9b0de6 | 4891 | unsigned char *p; |
eac338cf PB |
4892 | |
4893 | p = htab->srelplt2->contents; | |
4894 | if (info->shared) | |
4895 | p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel); | |
4896 | else | |
4897 | p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel); | |
4898 | ||
4899 | for (; num_plts; num_plts--) | |
4900 | { | |
4901 | Elf_Internal_Rela rel; | |
4902 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 4903 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4904 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
4905 | p += sizeof (Elf32_External_Rel); | |
4906 | ||
4907 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 4908 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf PB |
4909 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
4910 | p += sizeof (Elf32_External_Rel); | |
4911 | } | |
4912 | } | |
252b5132 RH |
4913 | } |
4914 | } | |
4915 | ||
6de2ae4a | 4916 | if (htab->elf.sgotplt) |
252b5132 | 4917 | { |
56d4289c L |
4918 | if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) |
4919 | { | |
4920 | (*_bfd_error_handler) | |
4921 | (_("discarded output section: `%A'"), htab->elf.sgotplt); | |
4922 | return FALSE; | |
4923 | } | |
4924 | ||
12d0ee4a | 4925 | /* Fill in the first three entries in the global offset table. */ |
6de2ae4a | 4926 | if (htab->elf.sgotplt->size > 0) |
12d0ee4a AM |
4927 | { |
4928 | bfd_put_32 (output_bfd, | |
55fd94b0 | 4929 | (sdyn == NULL ? 0 |
12d0ee4a | 4930 | : sdyn->output_section->vma + sdyn->output_offset), |
6de2ae4a L |
4931 | htab->elf.sgotplt->contents); |
4932 | bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4); | |
4933 | bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8); | |
12d0ee4a | 4934 | } |
252b5132 | 4935 | |
6de2ae4a | 4936 | elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4; |
12d0ee4a | 4937 | } |
8c37241b | 4938 | |
e41b3a13 | 4939 | /* Adjust .eh_frame for .plt section. */ |
9a2a56cc AM |
4940 | if (htab->plt_eh_frame != NULL |
4941 | && htab->plt_eh_frame->contents != NULL) | |
e41b3a13 JJ |
4942 | { |
4943 | if (htab->elf.splt != NULL | |
4944 | && htab->elf.splt->size != 0 | |
4945 | && (htab->elf.splt->flags & SEC_EXCLUDE) == 0 | |
4946 | && htab->elf.splt->output_section != NULL | |
4947 | && htab->plt_eh_frame->output_section != NULL) | |
4948 | { | |
4949 | bfd_vma plt_start = htab->elf.splt->output_section->vma; | |
4950 | bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma | |
4951 | + htab->plt_eh_frame->output_offset | |
4952 | + PLT_FDE_START_OFFSET; | |
4953 | bfd_put_signed_32 (dynobj, plt_start - eh_frame_start, | |
4954 | htab->plt_eh_frame->contents | |
4955 | + PLT_FDE_START_OFFSET); | |
4956 | } | |
4957 | if (htab->plt_eh_frame->sec_info_type | |
dbaa2011 | 4958 | == SEC_INFO_TYPE_EH_FRAME) |
e41b3a13 JJ |
4959 | { |
4960 | if (! _bfd_elf_write_section_eh_frame (output_bfd, info, | |
4961 | htab->plt_eh_frame, | |
4962 | htab->plt_eh_frame->contents)) | |
4963 | return FALSE; | |
4964 | } | |
4965 | } | |
4966 | ||
6de2ae4a L |
4967 | if (htab->elf.sgot && htab->elf.sgot->size > 0) |
4968 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4; | |
8c37241b | 4969 | |
c25bc9fc L |
4970 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
4971 | htab_traverse (htab->loc_hash_table, | |
4972 | elf_i386_finish_local_dynamic_symbol, | |
4973 | info); | |
4974 | ||
b34976b6 | 4975 | return TRUE; |
252b5132 RH |
4976 | } |
4977 | ||
4c45e5c9 JJ |
4978 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4979 | or (bfd_vma) -1 if it should not be included. */ | |
4980 | ||
4981 | static bfd_vma | |
4982 | elf_i386_plt_sym_val (bfd_vma i, const asection *plt, | |
4983 | const arelent *rel ATTRIBUTE_UNUSED) | |
4984 | { | |
25e762b9 | 4985 | return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner); |
4c45e5c9 JJ |
4986 | } |
4987 | ||
fdc90cb4 JJ |
4988 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
4989 | ||
4990 | static bfd_boolean | |
4991 | elf_i386_hash_symbol (struct elf_link_hash_entry *h) | |
4992 | { | |
4993 | if (h->plt.offset != (bfd_vma) -1 | |
4994 | && !h->def_regular | |
4995 | && !h->pointer_equality_needed) | |
4996 | return FALSE; | |
4997 | ||
4998 | return _bfd_elf_hash_symbol (h); | |
4999 | } | |
4c45e5c9 | 5000 | |
d8045f23 NC |
5001 | /* Hook called by the linker routine which adds symbols from an object |
5002 | file. */ | |
5003 | ||
5004 | static bfd_boolean | |
c16153ae | 5005 | elf_i386_add_symbol_hook (bfd * abfd, |
d8045f23 NC |
5006 | struct bfd_link_info * info ATTRIBUTE_UNUSED, |
5007 | Elf_Internal_Sym * sym, | |
5008 | const char ** namep ATTRIBUTE_UNUSED, | |
5009 | flagword * flagsp ATTRIBUTE_UNUSED, | |
5010 | asection ** secp ATTRIBUTE_UNUSED, | |
5011 | bfd_vma * valp ATTRIBUTE_UNUSED) | |
5012 | { | |
c16153ae | 5013 | if ((abfd->flags & DYNAMIC) == 0 |
f64b2e8d NC |
5014 | && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC |
5015 | || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)) | |
5016 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
d8045f23 NC |
5017 | |
5018 | return TRUE; | |
5019 | } | |
5020 | ||
252b5132 RH |
5021 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vec |
5022 | #define TARGET_LITTLE_NAME "elf32-i386" | |
5023 | #define ELF_ARCH bfd_arch_i386 | |
ae95ffa6 | 5024 | #define ELF_TARGET_ID I386_ELF_DATA |
252b5132 RH |
5025 | #define ELF_MACHINE_CODE EM_386 |
5026 | #define ELF_MAXPAGESIZE 0x1000 | |
252b5132 RH |
5027 | |
5028 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 5029 | #define elf_backend_can_refcount 1 |
252b5132 RH |
5030 | #define elf_backend_want_got_plt 1 |
5031 | #define elf_backend_plt_readonly 1 | |
5032 | #define elf_backend_want_plt_sym 0 | |
5033 | #define elf_backend_got_header_size 12 | |
e41b3a13 | 5034 | #define elf_backend_plt_alignment 4 |
252b5132 | 5035 | |
8c29f035 AM |
5036 | /* Support RELA for objdump of prelink objects. */ |
5037 | #define elf_info_to_howto elf_i386_info_to_howto_rel | |
dd5724d5 AM |
5038 | #define elf_info_to_howto_rel elf_i386_info_to_howto_rel |
5039 | ||
13ae64f3 | 5040 | #define bfd_elf32_mkobject elf_i386_mkobject |
13ae64f3 | 5041 | |
dd5724d5 AM |
5042 | #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name |
5043 | #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create | |
c25bc9fc | 5044 | #define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free |
dd5724d5 | 5045 | #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup |
13285a1b | 5046 | #define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup |
dd5724d5 AM |
5047 | |
5048 | #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol | |
13285a1b | 5049 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
dd5724d5 | 5050 | #define elf_backend_check_relocs elf_i386_check_relocs |
0ac8d2ca | 5051 | #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol |
6725bdbf | 5052 | #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections |
0ac8d2ca | 5053 | #define elf_backend_fake_sections elf_i386_fake_sections |
dd5724d5 AM |
5054 | #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections |
5055 | #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol | |
5056 | #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook | |
5057 | #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook | |
c5fccbec DJ |
5058 | #define elf_backend_grok_prstatus elf_i386_grok_prstatus |
5059 | #define elf_backend_grok_psinfo elf_i386_grok_psinfo | |
db6751f2 | 5060 | #define elf_backend_reloc_type_class elf_i386_reloc_type_class |
0ac8d2ca AM |
5061 | #define elf_backend_relocate_section elf_i386_relocate_section |
5062 | #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections | |
67a4f2b7 | 5063 | #define elf_backend_always_size_sections elf_i386_always_size_sections |
74541ad4 AM |
5064 | #define elf_backend_omit_section_dynsym \ |
5065 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
4c45e5c9 | 5066 | #define elf_backend_plt_sym_val elf_i386_plt_sym_val |
fdc90cb4 | 5067 | #define elf_backend_hash_symbol elf_i386_hash_symbol |
d8045f23 | 5068 | #define elf_backend_add_symbol_hook elf_i386_add_symbol_hook |
dd5724d5 | 5069 | |
252b5132 | 5070 | #include "elf32-target.h" |
2bc3c89a AM |
5071 | |
5072 | /* FreeBSD support. */ | |
5073 | ||
5074 | #undef TARGET_LITTLE_SYM | |
5075 | #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec | |
5076 | #undef TARGET_LITTLE_NAME | |
5077 | #define TARGET_LITTLE_NAME "elf32-i386-freebsd" | |
d1036acb L |
5078 | #undef ELF_OSABI |
5079 | #define ELF_OSABI ELFOSABI_FREEBSD | |
2bc3c89a AM |
5080 | |
5081 | /* The kernel recognizes executables as valid only if they carry a | |
5082 | "FreeBSD" label in the ELF header. So we put this label on all | |
5083 | executables and (for simplicity) also all other object files. */ | |
5084 | ||
2bc3c89a | 5085 | static void |
d8045f23 | 5086 | elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info) |
2bc3c89a | 5087 | { |
78245035 | 5088 | _bfd_elf_post_process_headers (abfd, info); |
2bc3c89a | 5089 | |
2bc3c89a AM |
5090 | #ifdef OLD_FREEBSD_ABI_LABEL |
5091 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
5092 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
caf47ea6 | 5093 | #endif |
2bc3c89a AM |
5094 | } |
5095 | ||
5096 | #undef elf_backend_post_process_headers | |
d8045f23 | 5097 | #define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers |
571fe01f NC |
5098 | #undef elf32_bed |
5099 | #define elf32_bed elf32_i386_fbsd_bed | |
2bc3c89a | 5100 | |
d8045f23 NC |
5101 | #undef elf_backend_add_symbol_hook |
5102 | ||
2bc3c89a | 5103 | #include "elf32-target.h" |
eac338cf | 5104 | |
a6cc6b3b RO |
5105 | /* Solaris 2. */ |
5106 | ||
5107 | #undef TARGET_LITTLE_SYM | |
5108 | #define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec | |
5109 | #undef TARGET_LITTLE_NAME | |
5110 | #define TARGET_LITTLE_NAME "elf32-i386-sol2" | |
5111 | ||
5112 | /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE | |
5113 | objects won't be recognized. */ | |
5114 | #undef ELF_OSABI | |
5115 | ||
5116 | #undef elf32_bed | |
5117 | #define elf32_bed elf32_i386_sol2_bed | |
5118 | ||
7dc98aea RO |
5119 | /* The 32-bit static TLS arena size is rounded to the nearest 8-byte |
5120 | boundary. */ | |
5121 | #undef elf_backend_static_tls_alignment | |
5122 | #define elf_backend_static_tls_alignment 8 | |
5123 | ||
a6cc6b3b RO |
5124 | /* The Solaris 2 ABI requires a plt symbol on all platforms. |
5125 | ||
5126 | Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output | |
5127 | File, p.63. */ | |
5128 | #undef elf_backend_want_plt_sym | |
5129 | #define elf_backend_want_plt_sym 1 | |
5130 | ||
5131 | #include "elf32-target.h" | |
5132 | ||
a27e4371 RM |
5133 | /* Native Client support. */ |
5134 | ||
5135 | #undef TARGET_LITTLE_SYM | |
5136 | #define TARGET_LITTLE_SYM bfd_elf32_i386_nacl_vec | |
5137 | #undef TARGET_LITTLE_NAME | |
5138 | #define TARGET_LITTLE_NAME "elf32-i386-nacl" | |
5139 | #undef elf32_bed | |
5140 | #define elf32_bed elf32_i386_nacl_bed | |
5141 | ||
5142 | #undef ELF_MAXPAGESIZE | |
5143 | #define ELF_MAXPAGESIZE 0x10000 | |
5144 | ||
5145 | /* Restore defaults. */ | |
5146 | #undef ELF_OSABI | |
5147 | #undef elf_backend_want_plt_sym | |
5148 | #define elf_backend_want_plt_sym 0 | |
5149 | #undef elf_backend_post_process_headers | |
a27e4371 RM |
5150 | #undef elf_backend_static_tls_alignment |
5151 | ||
5152 | /* NaCl uses substantially different PLT entries for the same effects. */ | |
5153 | ||
5154 | #undef elf_backend_plt_alignment | |
5155 | #define elf_backend_plt_alignment 5 | |
5156 | #define NACL_PLT_ENTRY_SIZE 64 | |
5157 | #define NACLMASK 0xe0 /* 32-byte alignment mask. */ | |
5158 | ||
5159 | static const bfd_byte elf_i386_nacl_plt0_entry[] = | |
5160 | { | |
5161 | 0xff, 0x35, /* pushl contents of address */ | |
5162 | 0, 0, 0, 0, /* replaced with address of .got + 4. */ | |
5163 | 0x8b, 0x0d, /* movl contents of address, %ecx */ | |
5164 | 0, 0, 0, 0, /* replaced with address of .got + 8. */ | |
5165 | 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */ | |
5166 | 0xff, 0xe1 /* jmp *%ecx */ | |
5167 | }; | |
5168 | ||
5169 | static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] = | |
5170 | { | |
5171 | 0x8b, 0x0d, /* movl contents of address, %ecx */ | |
5172 | 0, 0, 0, 0, /* replaced with GOT slot address. */ | |
5173 | 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */ | |
5174 | 0xff, 0xe1, /* jmp *%ecx */ | |
5175 | ||
5176 | /* Pad to the next 32-byte boundary with nop instructions. */ | |
5177 | 0x90, | |
5178 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5179 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5180 | ||
5181 | /* Lazy GOT entries point here (32-byte aligned). */ | |
5182 | 0x68, /* pushl immediate */ | |
5183 | 0, 0, 0, 0, /* replaced with reloc offset. */ | |
5184 | 0xe9, /* jmp relative */ | |
5185 | 0, 0, 0, 0, /* replaced with offset to .plt. */ | |
5186 | ||
5187 | /* Pad to the next 32-byte boundary with nop instructions. */ | |
5188 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5189 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5190 | 0x90, 0x90 | |
5191 | }; | |
5192 | ||
5193 | static const bfd_byte | |
5194 | elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] = | |
5195 | { | |
5196 | 0xff, 0x73, 0x04, /* pushl 4(%ebx) */ | |
5197 | 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */ | |
5198 | 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */ | |
5199 | 0xff, 0xe1, /* jmp *%ecx */ | |
caa0075c RM |
5200 | |
5201 | /* This is expected to be the same size as elf_i386_nacl_plt0_entry, | |
5202 | so pad to that size with nop instructions. */ | |
5203 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90 | |
a27e4371 RM |
5204 | }; |
5205 | ||
5206 | static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] = | |
5207 | { | |
5208 | 0x8b, 0x8b, /* movl offset(%ebx), %ecx */ | |
5209 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
5210 | 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */ | |
5211 | 0xff, 0xe1, /* jmp *%ecx */ | |
5212 | ||
5213 | /* Pad to the next 32-byte boundary with nop instructions. */ | |
5214 | 0x90, | |
5215 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5216 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5217 | ||
5218 | /* Lazy GOT entries point here (32-byte aligned). */ | |
5219 | 0x68, /* pushl immediate */ | |
5220 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
5221 | 0xe9, /* jmp relative */ | |
5222 | 0, 0, 0, 0, /* replaced with offset to start of .plt. */ | |
5223 | ||
5224 | /* Pad to the next 32-byte boundary with nop instructions. */ | |
5225 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5226 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5227 | 0x90, 0x90 | |
5228 | }; | |
5229 | ||
5230 | static const bfd_byte elf_i386_nacl_eh_frame_plt[] = | |
5231 | { | |
5232 | #if (PLT_CIE_LENGTH != 20 \ | |
5233 | || PLT_FDE_LENGTH != 36 \ | |
5234 | || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \ | |
5235 | || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12) | |
5236 | # error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!" | |
5237 | #endif | |
5238 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
5239 | 0, 0, 0, 0, /* CIE ID */ | |
5240 | 1, /* CIE version */ | |
5241 | 'z', 'R', 0, /* Augmentation string */ | |
5242 | 1, /* Code alignment factor */ | |
5243 | 0x7c, /* Data alignment factor: -4 */ | |
5244 | 8, /* Return address column */ | |
5245 | 1, /* Augmentation size */ | |
5246 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
5247 | DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */ | |
5248 | DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */ | |
5249 | DW_CFA_nop, DW_CFA_nop, | |
5250 | ||
5251 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
5252 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
5253 | 0, 0, 0, 0, /* R_386_PC32 .plt goes here */ | |
5254 | 0, 0, 0, 0, /* .plt size goes here */ | |
5255 | 0, /* Augmentation size */ | |
5256 | DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */ | |
5257 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
5258 | DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */ | |
5259 | DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */ | |
5260 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
5261 | 13, /* Block length */ | |
5262 | DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */ | |
5263 | DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */ | |
5264 | DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge, | |
5265 | DW_OP_lit2, DW_OP_shl, DW_OP_plus, | |
5266 | DW_CFA_nop, DW_CFA_nop | |
5267 | }; | |
5268 | ||
5269 | static const struct elf_i386_plt_layout elf_i386_nacl_plt = | |
5270 | { | |
5271 | elf_i386_nacl_plt0_entry, /* plt0_entry */ | |
5272 | sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */ | |
5273 | 2, /* plt0_got1_offset */ | |
5274 | 8, /* plt0_got2_offset */ | |
5275 | elf_i386_nacl_plt_entry, /* plt_entry */ | |
5276 | NACL_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
5277 | 2, /* plt_got_offset */ | |
5278 | 33, /* plt_reloc_offset */ | |
5279 | 38, /* plt_plt_offset */ | |
5280 | 32, /* plt_lazy_offset */ | |
5281 | elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */ | |
5282 | elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */ | |
5283 | elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */ | |
5284 | sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */ | |
5285 | }; | |
5286 | ||
5287 | static const struct elf_i386_backend_data elf_i386_nacl_arch_bed = | |
5288 | { | |
5289 | &elf_i386_nacl_plt, /* plt */ | |
5290 | 0x90, /* plt0_pad_byte: nop insn */ | |
5291 | 0, /* is_vxworks */ | |
5292 | }; | |
5293 | ||
64b384e1 RM |
5294 | static bfd_boolean |
5295 | elf32_i386_nacl_elf_object_p (bfd *abfd) | |
5296 | { | |
5297 | /* Set the right machine number for a NaCl i386 ELF32 file. */ | |
5298 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl); | |
5299 | return TRUE; | |
5300 | } | |
5301 | ||
a27e4371 RM |
5302 | #undef elf_backend_arch_data |
5303 | #define elf_backend_arch_data &elf_i386_nacl_arch_bed | |
5304 | ||
64b384e1 RM |
5305 | #undef elf_backend_object_p |
5306 | #define elf_backend_object_p elf32_i386_nacl_elf_object_p | |
5a68afcf RM |
5307 | #undef elf_backend_modify_segment_map |
5308 | #define elf_backend_modify_segment_map nacl_modify_segment_map | |
5309 | #undef elf_backend_modify_program_headers | |
5310 | #define elf_backend_modify_program_headers nacl_modify_program_headers | |
887badb3 RM |
5311 | #undef elf_backend_final_write_processing |
5312 | #define elf_backend_final_write_processing nacl_final_write_processing | |
5a68afcf | 5313 | |
a27e4371 RM |
5314 | #include "elf32-target.h" |
5315 | ||
5a68afcf | 5316 | /* Restore defaults. */ |
64b384e1 | 5317 | #undef elf_backend_object_p |
5a68afcf RM |
5318 | #undef elf_backend_modify_segment_map |
5319 | #undef elf_backend_modify_program_headers | |
887badb3 | 5320 | #undef elf_backend_final_write_processing |
5a68afcf | 5321 | |
eac338cf PB |
5322 | /* VxWorks support. */ |
5323 | ||
5324 | #undef TARGET_LITTLE_SYM | |
5325 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec | |
5326 | #undef TARGET_LITTLE_NAME | |
5327 | #define TARGET_LITTLE_NAME "elf32-i386-vxworks" | |
d1036acb | 5328 | #undef ELF_OSABI |
a27e4371 RM |
5329 | #undef elf_backend_plt_alignment |
5330 | #define elf_backend_plt_alignment 4 | |
eac338cf | 5331 | |
23209a78 RM |
5332 | static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed = |
5333 | { | |
25e762b9 | 5334 | &elf_i386_plt, /* plt */ |
23209a78 RM |
5335 | 0x90, /* plt0_pad_byte */ |
5336 | 1, /* is_vxworks */ | |
5337 | }; | |
eac338cf | 5338 | |
23209a78 RM |
5339 | #undef elf_backend_arch_data |
5340 | #define elf_backend_arch_data &elf_i386_vxworks_arch_bed | |
eac338cf | 5341 | |
13285a1b | 5342 | #undef elf_backend_relocs_compatible |
eac338cf PB |
5343 | #undef elf_backend_add_symbol_hook |
5344 | #define elf_backend_add_symbol_hook \ | |
5345 | elf_vxworks_add_symbol_hook | |
5346 | #undef elf_backend_link_output_symbol_hook | |
5347 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 5348 | elf_vxworks_link_output_symbol_hook |
eac338cf PB |
5349 | #undef elf_backend_emit_relocs |
5350 | #define elf_backend_emit_relocs elf_vxworks_emit_relocs | |
5351 | #undef elf_backend_final_write_processing | |
5352 | #define elf_backend_final_write_processing \ | |
5353 | elf_vxworks_final_write_processing | |
7dc98aea | 5354 | #undef elf_backend_static_tls_alignment |
eac338cf PB |
5355 | |
5356 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
5357 | define it. */ | |
5358 | #undef elf_backend_want_plt_sym | |
5359 | #define elf_backend_want_plt_sym 1 | |
5360 | ||
5361 | #undef elf32_bed | |
5362 | #define elf32_bed elf32_i386_vxworks_bed | |
5363 | ||
5364 | #include "elf32-target.h" |