Commit | Line | Data |
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252b5132 | 1 | /* Intel 80386/80486-specific support for 32-bit ELF |
b2a8e766 | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
0ffa91dd | 3 | 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
252b5132 | 4 | |
571fe01f | 5 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 6 | |
571fe01f NC |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
571fe01f | 10 | (at your option) any later version. |
252b5132 | 11 | |
571fe01f NC |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
571fe01f NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
252b5132 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
252b5132 RH |
24 | #include "bfdlink.h" |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
eac338cf | 27 | #include "elf-vxworks.h" |
142411ca | 28 | #include "bfd_stdint.h" |
c25bc9fc L |
29 | #include "objalloc.h" |
30 | #include "hashtab.h" | |
252b5132 | 31 | |
55fd94b0 AM |
32 | /* 386 uses REL relocations instead of RELA. */ |
33 | #define USE_REL 1 | |
252b5132 RH |
34 | |
35 | #include "elf/i386.h" | |
36 | ||
37 | static reloc_howto_type elf_howto_table[]= | |
38 | { | |
b34976b6 | 39 | HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield, |
1b452ec6 | 40 | bfd_elf_generic_reloc, "R_386_NONE", |
b34976b6 AM |
41 | TRUE, 0x00000000, 0x00000000, FALSE), |
42 | HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 43 | bfd_elf_generic_reloc, "R_386_32", |
b34976b6 AM |
44 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
45 | HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 46 | bfd_elf_generic_reloc, "R_386_PC32", |
b34976b6 AM |
47 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
48 | HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 49 | bfd_elf_generic_reloc, "R_386_GOT32", |
b34976b6 AM |
50 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
51 | HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 52 | bfd_elf_generic_reloc, "R_386_PLT32", |
b34976b6 AM |
53 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
54 | HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 55 | bfd_elf_generic_reloc, "R_386_COPY", |
b34976b6 AM |
56 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
57 | HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 58 | bfd_elf_generic_reloc, "R_386_GLOB_DAT", |
b34976b6 AM |
59 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
60 | HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 61 | bfd_elf_generic_reloc, "R_386_JUMP_SLOT", |
b34976b6 AM |
62 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
63 | HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 64 | bfd_elf_generic_reloc, "R_386_RELATIVE", |
b34976b6 AM |
65 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
66 | HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 67 | bfd_elf_generic_reloc, "R_386_GOTOFF", |
b34976b6 AM |
68 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
69 | HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 70 | bfd_elf_generic_reloc, "R_386_GOTPC", |
b34976b6 | 71 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
1b452ec6 | 72 | |
dc47f327 AM |
73 | /* We have a gap in the reloc numbers here. |
74 | R_386_standard counts the number up to this point, and | |
75 | R_386_ext_offset is the value to subtract from a reloc type of | |
76 | R_386_16 thru R_386_PC8 to form an index into this table. */ | |
55fd94b0 AM |
77 | #define R_386_standard (R_386_GOTPC + 1) |
78 | #define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard) | |
1b452ec6 | 79 | |
37e55690 | 80 | /* These relocs are a GNU extension. */ |
b34976b6 | 81 | HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
37e55690 | 82 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF", |
b34976b6 AM |
83 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
84 | HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 85 | bfd_elf_generic_reloc, "R_386_TLS_IE", |
b34976b6 AM |
86 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
87 | HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 88 | bfd_elf_generic_reloc, "R_386_TLS_GOTIE", |
b34976b6 AM |
89 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
90 | HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 91 | bfd_elf_generic_reloc, "R_386_TLS_LE", |
b34976b6 AM |
92 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
93 | HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 94 | bfd_elf_generic_reloc, "R_386_TLS_GD", |
b34976b6 AM |
95 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
96 | HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 97 | bfd_elf_generic_reloc, "R_386_TLS_LDM", |
b34976b6 AM |
98 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
99 | HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 100 | bfd_elf_generic_reloc, "R_386_16", |
b34976b6 | 101 | TRUE, 0xffff, 0xffff, FALSE), |
b0360d8c | 102 | HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, |
1b452ec6 | 103 | bfd_elf_generic_reloc, "R_386_PC16", |
b34976b6 AM |
104 | TRUE, 0xffff, 0xffff, TRUE), |
105 | HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 106 | bfd_elf_generic_reloc, "R_386_8", |
b34976b6 AM |
107 | TRUE, 0xff, 0xff, FALSE), |
108 | HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
1b452ec6 | 109 | bfd_elf_generic_reloc, "R_386_PC8", |
b34976b6 | 110 | TRUE, 0xff, 0xff, TRUE), |
dc47f327 | 111 | |
55fd94b0 AM |
112 | #define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset) |
113 | #define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext) | |
13ae64f3 | 114 | /* These are common with Solaris TLS implementation. */ |
b34976b6 | 115 | HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
13ae64f3 | 116 | bfd_elf_generic_reloc, "R_386_TLS_LDO_32", |
b34976b6 AM |
117 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
118 | HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 119 | bfd_elf_generic_reloc, "R_386_TLS_IE_32", |
b34976b6 AM |
120 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
121 | HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 122 | bfd_elf_generic_reloc, "R_386_TLS_LE_32", |
b34976b6 AM |
123 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
124 | HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 125 | bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32", |
b34976b6 AM |
126 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
127 | HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 128 | bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32", |
b34976b6 AM |
129 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
130 | HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 131 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF32", |
b34976b6 | 132 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
67a4f2b7 AO |
133 | EMPTY_HOWTO (38), |
134 | HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
135 | bfd_elf_generic_reloc, "R_386_TLS_GOTDESC", | |
136 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
137 | HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
138 | bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL", | |
139 | FALSE, 0, 0, FALSE), | |
140 | HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
141 | bfd_elf_generic_reloc, "R_386_TLS_DESC", | |
142 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
cbe950e9 L |
143 | HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
144 | bfd_elf_generic_reloc, "R_386_IRELATIVE", | |
145 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
13ae64f3 JJ |
146 | |
147 | /* Another gap. */ | |
cbe950e9 L |
148 | #define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset) |
149 | #define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative) | |
252b5132 RH |
150 | |
151 | /* GNU extension to record C++ vtable hierarchy. */ | |
252b5132 RH |
152 | HOWTO (R_386_GNU_VTINHERIT, /* type */ |
153 | 0, /* rightshift */ | |
154 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
155 | 0, /* bitsize */ | |
b34976b6 | 156 | FALSE, /* pc_relative */ |
252b5132 RH |
157 | 0, /* bitpos */ |
158 | complain_overflow_dont, /* complain_on_overflow */ | |
159 | NULL, /* special_function */ | |
160 | "R_386_GNU_VTINHERIT", /* name */ | |
b34976b6 | 161 | FALSE, /* partial_inplace */ |
252b5132 RH |
162 | 0, /* src_mask */ |
163 | 0, /* dst_mask */ | |
b34976b6 | 164 | FALSE), /* pcrel_offset */ |
252b5132 RH |
165 | |
166 | /* GNU extension to record C++ vtable member usage. */ | |
252b5132 RH |
167 | HOWTO (R_386_GNU_VTENTRY, /* type */ |
168 | 0, /* rightshift */ | |
169 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
170 | 0, /* bitsize */ | |
b34976b6 | 171 | FALSE, /* pc_relative */ |
252b5132 RH |
172 | 0, /* bitpos */ |
173 | complain_overflow_dont, /* complain_on_overflow */ | |
174 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
175 | "R_386_GNU_VTENTRY", /* name */ | |
b34976b6 | 176 | FALSE, /* partial_inplace */ |
252b5132 RH |
177 | 0, /* src_mask */ |
178 | 0, /* dst_mask */ | |
b34976b6 | 179 | FALSE) /* pcrel_offset */ |
dc47f327 | 180 | |
55fd94b0 | 181 | #define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset) |
dc47f327 AM |
182 | |
183 | }; | |
184 | ||
252b5132 | 185 | #ifdef DEBUG_GEN_RELOC |
55fd94b0 AM |
186 | #define TRACE(str) \ |
187 | fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str) | |
252b5132 RH |
188 | #else |
189 | #define TRACE(str) | |
190 | #endif | |
191 | ||
192 | static reloc_howto_type * | |
55fd94b0 AM |
193 | elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
194 | bfd_reloc_code_real_type code) | |
252b5132 RH |
195 | { |
196 | switch (code) | |
197 | { | |
198 | case BFD_RELOC_NONE: | |
199 | TRACE ("BFD_RELOC_NONE"); | |
55fd94b0 | 200 | return &elf_howto_table[R_386_NONE]; |
252b5132 RH |
201 | |
202 | case BFD_RELOC_32: | |
203 | TRACE ("BFD_RELOC_32"); | |
55fd94b0 | 204 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
205 | |
206 | case BFD_RELOC_CTOR: | |
207 | TRACE ("BFD_RELOC_CTOR"); | |
55fd94b0 | 208 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
209 | |
210 | case BFD_RELOC_32_PCREL: | |
211 | TRACE ("BFD_RELOC_PC32"); | |
55fd94b0 | 212 | return &elf_howto_table[R_386_PC32]; |
252b5132 RH |
213 | |
214 | case BFD_RELOC_386_GOT32: | |
215 | TRACE ("BFD_RELOC_386_GOT32"); | |
55fd94b0 | 216 | return &elf_howto_table[R_386_GOT32]; |
252b5132 RH |
217 | |
218 | case BFD_RELOC_386_PLT32: | |
219 | TRACE ("BFD_RELOC_386_PLT32"); | |
55fd94b0 | 220 | return &elf_howto_table[R_386_PLT32]; |
252b5132 RH |
221 | |
222 | case BFD_RELOC_386_COPY: | |
223 | TRACE ("BFD_RELOC_386_COPY"); | |
55fd94b0 | 224 | return &elf_howto_table[R_386_COPY]; |
252b5132 RH |
225 | |
226 | case BFD_RELOC_386_GLOB_DAT: | |
227 | TRACE ("BFD_RELOC_386_GLOB_DAT"); | |
55fd94b0 | 228 | return &elf_howto_table[R_386_GLOB_DAT]; |
252b5132 RH |
229 | |
230 | case BFD_RELOC_386_JUMP_SLOT: | |
231 | TRACE ("BFD_RELOC_386_JUMP_SLOT"); | |
55fd94b0 | 232 | return &elf_howto_table[R_386_JUMP_SLOT]; |
252b5132 RH |
233 | |
234 | case BFD_RELOC_386_RELATIVE: | |
235 | TRACE ("BFD_RELOC_386_RELATIVE"); | |
55fd94b0 | 236 | return &elf_howto_table[R_386_RELATIVE]; |
252b5132 RH |
237 | |
238 | case BFD_RELOC_386_GOTOFF: | |
239 | TRACE ("BFD_RELOC_386_GOTOFF"); | |
55fd94b0 | 240 | return &elf_howto_table[R_386_GOTOFF]; |
252b5132 RH |
241 | |
242 | case BFD_RELOC_386_GOTPC: | |
243 | TRACE ("BFD_RELOC_386_GOTPC"); | |
55fd94b0 | 244 | return &elf_howto_table[R_386_GOTPC]; |
252b5132 | 245 | |
37e55690 JJ |
246 | /* These relocs are a GNU extension. */ |
247 | case BFD_RELOC_386_TLS_TPOFF: | |
248 | TRACE ("BFD_RELOC_386_TLS_TPOFF"); | |
55fd94b0 | 249 | return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset]; |
37e55690 JJ |
250 | |
251 | case BFD_RELOC_386_TLS_IE: | |
252 | TRACE ("BFD_RELOC_386_TLS_IE"); | |
55fd94b0 | 253 | return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset]; |
37e55690 JJ |
254 | |
255 | case BFD_RELOC_386_TLS_GOTIE: | |
256 | TRACE ("BFD_RELOC_386_TLS_GOTIE"); | |
55fd94b0 | 257 | return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset]; |
37e55690 | 258 | |
13ae64f3 JJ |
259 | case BFD_RELOC_386_TLS_LE: |
260 | TRACE ("BFD_RELOC_386_TLS_LE"); | |
55fd94b0 | 261 | return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset]; |
13ae64f3 JJ |
262 | |
263 | case BFD_RELOC_386_TLS_GD: | |
264 | TRACE ("BFD_RELOC_386_TLS_GD"); | |
55fd94b0 | 265 | return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset]; |
13ae64f3 JJ |
266 | |
267 | case BFD_RELOC_386_TLS_LDM: | |
268 | TRACE ("BFD_RELOC_386_TLS_LDM"); | |
55fd94b0 | 269 | return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset]; |
13ae64f3 | 270 | |
252b5132 RH |
271 | case BFD_RELOC_16: |
272 | TRACE ("BFD_RELOC_16"); | |
55fd94b0 | 273 | return &elf_howto_table[R_386_16 - R_386_ext_offset]; |
252b5132 RH |
274 | |
275 | case BFD_RELOC_16_PCREL: | |
276 | TRACE ("BFD_RELOC_16_PCREL"); | |
55fd94b0 | 277 | return &elf_howto_table[R_386_PC16 - R_386_ext_offset]; |
252b5132 RH |
278 | |
279 | case BFD_RELOC_8: | |
280 | TRACE ("BFD_RELOC_8"); | |
55fd94b0 | 281 | return &elf_howto_table[R_386_8 - R_386_ext_offset]; |
252b5132 RH |
282 | |
283 | case BFD_RELOC_8_PCREL: | |
284 | TRACE ("BFD_RELOC_8_PCREL"); | |
55fd94b0 | 285 | return &elf_howto_table[R_386_PC8 - R_386_ext_offset]; |
252b5132 | 286 | |
13ae64f3 JJ |
287 | /* Common with Sun TLS implementation. */ |
288 | case BFD_RELOC_386_TLS_LDO_32: | |
289 | TRACE ("BFD_RELOC_386_TLS_LDO_32"); | |
55fd94b0 | 290 | return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset]; |
13ae64f3 JJ |
291 | |
292 | case BFD_RELOC_386_TLS_IE_32: | |
293 | TRACE ("BFD_RELOC_386_TLS_IE_32"); | |
55fd94b0 | 294 | return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
295 | |
296 | case BFD_RELOC_386_TLS_LE_32: | |
297 | TRACE ("BFD_RELOC_386_TLS_LE_32"); | |
55fd94b0 | 298 | return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
299 | |
300 | case BFD_RELOC_386_TLS_DTPMOD32: | |
301 | TRACE ("BFD_RELOC_386_TLS_DTPMOD32"); | |
55fd94b0 | 302 | return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset]; |
13ae64f3 JJ |
303 | |
304 | case BFD_RELOC_386_TLS_DTPOFF32: | |
305 | TRACE ("BFD_RELOC_386_TLS_DTPOFF32"); | |
55fd94b0 | 306 | return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset]; |
13ae64f3 JJ |
307 | |
308 | case BFD_RELOC_386_TLS_TPOFF32: | |
309 | TRACE ("BFD_RELOC_386_TLS_TPOFF32"); | |
55fd94b0 | 310 | return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset]; |
13ae64f3 | 311 | |
67a4f2b7 AO |
312 | case BFD_RELOC_386_TLS_GOTDESC: |
313 | TRACE ("BFD_RELOC_386_TLS_GOTDESC"); | |
314 | return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset]; | |
315 | ||
316 | case BFD_RELOC_386_TLS_DESC_CALL: | |
317 | TRACE ("BFD_RELOC_386_TLS_DESC_CALL"); | |
318 | return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset]; | |
319 | ||
320 | case BFD_RELOC_386_TLS_DESC: | |
321 | TRACE ("BFD_RELOC_386_TLS_DESC"); | |
322 | return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset]; | |
323 | ||
cbe950e9 L |
324 | case BFD_RELOC_386_IRELATIVE: |
325 | TRACE ("BFD_RELOC_386_IRELATIVE"); | |
326 | return &elf_howto_table[R_386_IRELATIVE]; | |
327 | ||
252b5132 RH |
328 | case BFD_RELOC_VTABLE_INHERIT: |
329 | TRACE ("BFD_RELOC_VTABLE_INHERIT"); | |
55fd94b0 | 330 | return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset]; |
252b5132 RH |
331 | |
332 | case BFD_RELOC_VTABLE_ENTRY: | |
333 | TRACE ("BFD_RELOC_VTABLE_ENTRY"); | |
55fd94b0 | 334 | return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset]; |
252b5132 RH |
335 | |
336 | default: | |
337 | break; | |
338 | } | |
339 | ||
340 | TRACE ("Unknown"); | |
341 | return 0; | |
342 | } | |
343 | ||
157090f7 AM |
344 | static reloc_howto_type * |
345 | elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
346 | const char *r_name) | |
347 | { | |
348 | unsigned int i; | |
349 | ||
350 | for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++) | |
351 | if (elf_howto_table[i].name != NULL | |
352 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
353 | return &elf_howto_table[i]; | |
354 | ||
355 | return NULL; | |
356 | } | |
357 | ||
142411ca L |
358 | static reloc_howto_type * |
359 | elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type) | |
252b5132 | 360 | { |
dc47f327 AM |
361 | unsigned int indx; |
362 | ||
363 | if ((indx = r_type) >= R_386_standard | |
364 | && ((indx = r_type - R_386_ext_offset) - R_386_standard | |
365 | >= R_386_ext - R_386_standard) | |
13ae64f3 | 366 | && ((indx = r_type - R_386_tls_offset) - R_386_ext |
cbe950e9 L |
367 | >= R_386_irelative - R_386_ext) |
368 | && ((indx = r_type - R_386_vt_offset) - R_386_irelative | |
369 | >= R_386_vt - R_386_irelative)) | |
252b5132 | 370 | { |
d003868e AM |
371 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), |
372 | abfd, (int) r_type); | |
55fd94b0 | 373 | indx = R_386_NONE; |
252b5132 | 374 | } |
142411ca L |
375 | BFD_ASSERT (elf_howto_table [indx].type == r_type); |
376 | return &elf_howto_table[indx]; | |
377 | } | |
378 | ||
379 | static void | |
380 | elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, | |
381 | arelent *cache_ptr, | |
382 | Elf_Internal_Rela *dst) | |
383 | { | |
384 | unsigned int r_type = ELF32_R_TYPE (dst->r_info); | |
385 | cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type); | |
252b5132 RH |
386 | } |
387 | ||
388 | /* Return whether a symbol name implies a local label. The UnixWare | |
389 | 2.1 cc generates temporary symbols that start with .X, so we | |
390 | recognize them here. FIXME: do other SVR4 compilers also use .X?. | |
391 | If so, we should move the .X recognition into | |
392 | _bfd_elf_is_local_label_name. */ | |
393 | ||
b34976b6 | 394 | static bfd_boolean |
55fd94b0 | 395 | elf_i386_is_local_label_name (bfd *abfd, const char *name) |
252b5132 RH |
396 | { |
397 | if (name[0] == '.' && name[1] == 'X') | |
b34976b6 | 398 | return TRUE; |
252b5132 RH |
399 | |
400 | return _bfd_elf_is_local_label_name (abfd, name); | |
401 | } | |
402 | \f | |
38701953 | 403 | /* Support for core dump NOTE sections. */ |
61adc1a4 | 404 | |
b34976b6 | 405 | static bfd_boolean |
55fd94b0 | 406 | elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
38701953 AM |
407 | { |
408 | int offset; | |
eea6121a | 409 | size_t size; |
38701953 | 410 | |
61adc1a4 | 411 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 412 | { |
61adc1a4 NC |
413 | int pr_version = bfd_get_32 (abfd, note->descdata); |
414 | ||
415 | if (pr_version != 1) | |
416 | return FALSE; | |
417 | ||
418 | /* pr_cursig */ | |
419 | elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20); | |
420 | ||
421 | /* pr_pid */ | |
422 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
423 | ||
424 | /* pr_reg */ | |
425 | offset = 28; | |
eea6121a | 426 | size = bfd_get_32 (abfd, note->descdata + 8); |
61adc1a4 NC |
427 | } |
428 | else | |
429 | { | |
430 | switch (note->descsz) | |
431 | { | |
432 | default: | |
433 | return FALSE; | |
38701953 | 434 | |
61adc1a4 NC |
435 | case 144: /* Linux/i386 */ |
436 | /* pr_cursig */ | |
437 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
38701953 | 438 | |
61adc1a4 NC |
439 | /* pr_pid */ |
440 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); | |
38701953 | 441 | |
61adc1a4 NC |
442 | /* pr_reg */ |
443 | offset = 72; | |
eea6121a | 444 | size = 68; |
38701953 | 445 | |
61adc1a4 NC |
446 | break; |
447 | } | |
38701953 AM |
448 | } |
449 | ||
450 | /* Make a ".reg/999" section. */ | |
451 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 452 | size, note->descpos + offset); |
38701953 AM |
453 | } |
454 | ||
b34976b6 | 455 | static bfd_boolean |
55fd94b0 | 456 | elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
38701953 | 457 | { |
61adc1a4 | 458 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 459 | { |
61adc1a4 NC |
460 | int pr_version = bfd_get_32 (abfd, note->descdata); |
461 | ||
462 | if (pr_version != 1) | |
b34976b6 | 463 | return FALSE; |
38701953 | 464 | |
61adc1a4 NC |
465 | elf_tdata (abfd)->core_program |
466 | = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17); | |
467 | elf_tdata (abfd)->core_command | |
468 | = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81); | |
469 | } | |
470 | else | |
471 | { | |
472 | switch (note->descsz) | |
473 | { | |
474 | default: | |
475 | return FALSE; | |
476 | ||
477 | case 124: /* Linux/i386 elf_prpsinfo. */ | |
478 | elf_tdata (abfd)->core_program | |
479 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
480 | elf_tdata (abfd)->core_command | |
481 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
482 | } | |
38701953 AM |
483 | } |
484 | ||
485 | /* Note that for some reason, a spurious space is tacked | |
486 | onto the end of the args in some (at least one anyway) | |
487 | implementations, so strip it off if it exists. */ | |
38701953 AM |
488 | { |
489 | char *command = elf_tdata (abfd)->core_command; | |
490 | int n = strlen (command); | |
491 | ||
492 | if (0 < n && command[n - 1] == ' ') | |
493 | command[n - 1] = '\0'; | |
494 | } | |
495 | ||
b34976b6 | 496 | return TRUE; |
38701953 AM |
497 | } |
498 | \f | |
499 | /* Functions for the i386 ELF linker. | |
500 | ||
501 | In order to gain some understanding of code in this file without | |
502 | knowing all the intricate details of the linker, note the | |
503 | following: | |
504 | ||
505 | Functions named elf_i386_* are called by external routines, other | |
506 | functions are only called locally. elf_i386_* functions appear | |
507 | in this file more or less in the order in which they are called | |
508 | from external routines. eg. elf_i386_check_relocs is called | |
509 | early in the link process, elf_i386_finish_dynamic_sections is | |
510 | one of the last functions. */ | |
511 | ||
252b5132 RH |
512 | |
513 | /* The name of the dynamic interpreter. This is put in the .interp | |
514 | section. */ | |
515 | ||
516 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
517 | ||
a23b6845 AM |
518 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
519 | copying dynamic variables from a shared lib into an app's dynbss | |
520 | section, and instead use a dynamic relocation to point into the | |
521 | shared lib. */ | |
522 | #define ELIMINATE_COPY_RELOCS 1 | |
523 | ||
252b5132 RH |
524 | /* The size in bytes of an entry in the procedure linkage table. */ |
525 | ||
526 | #define PLT_ENTRY_SIZE 16 | |
527 | ||
528 | /* The first entry in an absolute procedure linkage table looks like | |
eac338cf PB |
529 | this. See the SVR4 ABI i386 supplement to see how this works. |
530 | Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */ | |
252b5132 | 531 | |
eac338cf | 532 | static const bfd_byte elf_i386_plt0_entry[12] = |
252b5132 RH |
533 | { |
534 | 0xff, 0x35, /* pushl contents of address */ | |
535 | 0, 0, 0, 0, /* replaced with address of .got + 4. */ | |
536 | 0xff, 0x25, /* jmp indirect */ | |
eac338cf | 537 | 0, 0, 0, 0 /* replaced with address of .got + 8. */ |
252b5132 RH |
538 | }; |
539 | ||
540 | /* Subsequent entries in an absolute procedure linkage table look like | |
541 | this. */ | |
542 | ||
543 | static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] = | |
544 | { | |
545 | 0xff, 0x25, /* jmp indirect */ | |
546 | 0, 0, 0, 0, /* replaced with address of this symbol in .got. */ | |
547 | 0x68, /* pushl immediate */ | |
548 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
549 | 0xe9, /* jmp relative */ | |
550 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
551 | }; | |
552 | ||
eac338cf PB |
553 | /* The first entry in a PIC procedure linkage table look like this. |
554 | Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */ | |
252b5132 | 555 | |
eac338cf | 556 | static const bfd_byte elf_i386_pic_plt0_entry[12] = |
252b5132 RH |
557 | { |
558 | 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */ | |
eac338cf | 559 | 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */ |
252b5132 RH |
560 | }; |
561 | ||
562 | /* Subsequent entries in a PIC procedure linkage table look like this. */ | |
563 | ||
564 | static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] = | |
565 | { | |
566 | 0xff, 0xa3, /* jmp *offset(%ebx) */ | |
567 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
568 | 0x68, /* pushl immediate */ | |
569 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
570 | 0xe9, /* jmp relative */ | |
571 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
572 | }; | |
573 | ||
eac338cf PB |
574 | /* On VxWorks, the .rel.plt.unloaded section has absolute relocations |
575 | for the PLTResolve stub and then for each PLT entry. */ | |
576 | #define PLTRESOLVE_RELOCS_SHLIB 0 | |
577 | #define PLTRESOLVE_RELOCS 2 | |
578 | #define PLT_NON_JUMP_SLOT_RELOCS 2 | |
579 | ||
252b5132 RH |
580 | /* i386 ELF linker hash entry. */ |
581 | ||
582 | struct elf_i386_link_hash_entry | |
583 | { | |
ebe50bae | 584 | struct elf_link_hash_entry elf; |
252b5132 | 585 | |
0c715baa | 586 | /* Track dynamic relocs copied for this symbol. */ |
e03a8ed8 | 587 | struct elf_dyn_relocs *dyn_relocs; |
13ae64f3 | 588 | |
37e55690 JJ |
589 | #define GOT_UNKNOWN 0 |
590 | #define GOT_NORMAL 1 | |
591 | #define GOT_TLS_GD 2 | |
592 | #define GOT_TLS_IE 4 | |
593 | #define GOT_TLS_IE_POS 5 | |
594 | #define GOT_TLS_IE_NEG 6 | |
595 | #define GOT_TLS_IE_BOTH 7 | |
67a4f2b7 AO |
596 | #define GOT_TLS_GDESC 8 |
597 | #define GOT_TLS_GD_BOTH_P(type) \ | |
598 | ((type) == (GOT_TLS_GD | GOT_TLS_GDESC)) | |
599 | #define GOT_TLS_GD_P(type) \ | |
600 | ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type)) | |
601 | #define GOT_TLS_GDESC_P(type) \ | |
602 | ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type)) | |
603 | #define GOT_TLS_GD_ANY_P(type) \ | |
604 | (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type)) | |
37e55690 | 605 | unsigned char tls_type; |
67a4f2b7 AO |
606 | |
607 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, | |
608 | starting at the end of the jump table. */ | |
609 | bfd_vma tlsdesc_got; | |
13ae64f3 JJ |
610 | }; |
611 | ||
612 | #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent)) | |
613 | ||
614 | struct elf_i386_obj_tdata | |
615 | { | |
616 | struct elf_obj_tdata root; | |
617 | ||
618 | /* tls_type for each local got entry. */ | |
619 | char *local_got_tls_type; | |
67a4f2b7 AO |
620 | |
621 | /* GOTPLT entries for TLS descriptors. */ | |
622 | bfd_vma *local_tlsdesc_gotent; | |
252b5132 RH |
623 | }; |
624 | ||
13ae64f3 JJ |
625 | #define elf_i386_tdata(abfd) \ |
626 | ((struct elf_i386_obj_tdata *) (abfd)->tdata.any) | |
627 | ||
628 | #define elf_i386_local_got_tls_type(abfd) \ | |
629 | (elf_i386_tdata (abfd)->local_got_tls_type) | |
630 | ||
67a4f2b7 AO |
631 | #define elf_i386_local_tlsdesc_gotent(abfd) \ |
632 | (elf_i386_tdata (abfd)->local_tlsdesc_gotent) | |
633 | ||
0ffa91dd NC |
634 | #define is_i386_elf(bfd) \ |
635 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
636 | && elf_tdata (bfd) != NULL \ | |
637 | && elf_object_id (bfd) == I386_ELF_TDATA) | |
638 | ||
b34976b6 | 639 | static bfd_boolean |
55fd94b0 | 640 | elf_i386_mkobject (bfd *abfd) |
13ae64f3 | 641 | { |
0ffa91dd NC |
642 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata), |
643 | I386_ELF_TDATA); | |
13ae64f3 | 644 | } |
cedb70c5 | 645 | |
252b5132 RH |
646 | /* i386 ELF linker hash table. */ |
647 | ||
648 | struct elf_i386_link_hash_table | |
649 | { | |
ebe50bae | 650 | struct elf_link_hash_table elf; |
252b5132 | 651 | |
6725bdbf | 652 | /* Short-cuts to get to dynamic linker sections. */ |
6725bdbf AM |
653 | asection *sdynbss; |
654 | asection *srelbss; | |
9635fe29 | 655 | |
eac338cf PB |
656 | /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */ |
657 | asection *srelplt2; | |
658 | ||
eac338cf PB |
659 | /* True if the target system is VxWorks. */ |
660 | int is_vxworks; | |
ec338859 | 661 | |
eac338cf PB |
662 | /* Value used to fill the last word of the first plt entry. */ |
663 | bfd_byte plt0_pad_byte; | |
9635fe29 | 664 | |
5ae0bfb6 RS |
665 | /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */ |
666 | bfd_vma next_tls_desc_index; | |
667 | ||
13ae64f3 JJ |
668 | union { |
669 | bfd_signed_vma refcount; | |
670 | bfd_vma offset; | |
671 | } tls_ldm_got; | |
672 | ||
67a4f2b7 AO |
673 | /* The amount of space used by the reserved portion of the sgotplt |
674 | section, plus whatever space is used by the jump slots. */ | |
675 | bfd_vma sgotplt_jump_table_size; | |
676 | ||
87d72d41 AM |
677 | /* Small local sym cache. */ |
678 | struct sym_cache sym_cache; | |
9f03412a AO |
679 | |
680 | /* _TLS_MODULE_BASE_ symbol. */ | |
681 | struct bfd_link_hash_entry *tls_module_base; | |
c25bc9fc L |
682 | |
683 | /* Used by local STT_GNU_IFUNC symbols. */ | |
684 | htab_t loc_hash_table; | |
685 | void *loc_hash_memory; | |
6725bdbf | 686 | }; |
252b5132 RH |
687 | |
688 | /* Get the i386 ELF linker hash table from a link_info structure. */ | |
689 | ||
690 | #define elf_i386_hash_table(p) \ | |
691 | ((struct elf_i386_link_hash_table *) ((p)->hash)) | |
692 | ||
67a4f2b7 | 693 | #define elf_i386_compute_jump_table_size(htab) \ |
5ae0bfb6 | 694 | ((htab)->next_tls_desc_index * 4) |
67a4f2b7 | 695 | |
252b5132 RH |
696 | /* Create an entry in an i386 ELF linker hash table. */ |
697 | ||
698 | static struct bfd_hash_entry * | |
eb4ff4d6 L |
699 | elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry, |
700 | struct bfd_hash_table *table, | |
701 | const char *string) | |
252b5132 | 702 | { |
252b5132 RH |
703 | /* Allocate the structure if it has not already been allocated by a |
704 | subclass. */ | |
ebe50bae AM |
705 | if (entry == NULL) |
706 | { | |
707 | entry = bfd_hash_allocate (table, | |
708 | sizeof (struct elf_i386_link_hash_entry)); | |
709 | if (entry == NULL) | |
710 | return entry; | |
711 | } | |
252b5132 RH |
712 | |
713 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
714 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
715 | if (entry != NULL) | |
252b5132 | 716 | { |
ebe50bae AM |
717 | struct elf_i386_link_hash_entry *eh; |
718 | ||
719 | eh = (struct elf_i386_link_hash_entry *) entry; | |
720 | eh->dyn_relocs = NULL; | |
13ae64f3 | 721 | eh->tls_type = GOT_UNKNOWN; |
67a4f2b7 | 722 | eh->tlsdesc_got = (bfd_vma) -1; |
252b5132 RH |
723 | } |
724 | ||
ebe50bae | 725 | return entry; |
252b5132 RH |
726 | } |
727 | ||
c25bc9fc L |
728 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
729 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
730 | as global symbol. We reuse indx and dynstr_index for local symbol | |
731 | hash since they aren't used by global symbols in this backend. */ | |
732 | ||
733 | static hashval_t | |
734 | elf_i386_local_htab_hash (const void *ptr) | |
735 | { | |
736 | struct elf_link_hash_entry *h | |
737 | = (struct elf_link_hash_entry *) ptr; | |
d2149d72 | 738 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); |
c25bc9fc L |
739 | } |
740 | ||
741 | /* Compare local hash entries. */ | |
742 | ||
743 | static int | |
744 | elf_i386_local_htab_eq (const void *ptr1, const void *ptr2) | |
745 | { | |
746 | struct elf_link_hash_entry *h1 | |
747 | = (struct elf_link_hash_entry *) ptr1; | |
748 | struct elf_link_hash_entry *h2 | |
749 | = (struct elf_link_hash_entry *) ptr2; | |
750 | ||
751 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
752 | } | |
753 | ||
754 | /* Find and/or create a hash entry for local symbol. */ | |
755 | ||
756 | static struct elf_link_hash_entry * | |
757 | elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab, | |
758 | bfd *abfd, const Elf_Internal_Rela *rel, | |
759 | bfd_boolean create) | |
760 | { | |
761 | struct elf_i386_link_hash_entry e, *ret; | |
762 | asection *sec = abfd->sections; | |
d2149d72 L |
763 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, |
764 | ELF32_R_SYM (rel->r_info)); | |
c25bc9fc L |
765 | void **slot; |
766 | ||
767 | e.elf.indx = sec->id; | |
768 | e.elf.dynstr_index = ELF32_R_SYM (rel->r_info); | |
769 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
770 | create ? INSERT : NO_INSERT); | |
771 | ||
772 | if (!slot) | |
773 | return NULL; | |
774 | ||
775 | if (*slot) | |
776 | { | |
777 | ret = (struct elf_i386_link_hash_entry *) *slot; | |
778 | return &ret->elf; | |
779 | } | |
780 | ||
781 | ret = (struct elf_i386_link_hash_entry *) | |
782 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
783 | sizeof (struct elf_i386_link_hash_entry)); | |
784 | if (ret) | |
785 | { | |
786 | memset (ret, 0, sizeof (*ret)); | |
787 | ret->elf.indx = sec->id; | |
788 | ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info); | |
789 | ret->elf.dynindx = -1; | |
790 | ret->elf.plt.offset = (bfd_vma) -1; | |
791 | ret->elf.got.offset = (bfd_vma) -1; | |
792 | *slot = ret; | |
793 | } | |
794 | return &ret->elf; | |
795 | } | |
796 | ||
252b5132 RH |
797 | /* Create an i386 ELF linker hash table. */ |
798 | ||
799 | static struct bfd_link_hash_table * | |
55fd94b0 | 800 | elf_i386_link_hash_table_create (bfd *abfd) |
252b5132 RH |
801 | { |
802 | struct elf_i386_link_hash_table *ret; | |
dc810e39 | 803 | bfd_size_type amt = sizeof (struct elf_i386_link_hash_table); |
252b5132 | 804 | |
55fd94b0 | 805 | ret = bfd_malloc (amt); |
ebe50bae | 806 | if (ret == NULL) |
252b5132 RH |
807 | return NULL; |
808 | ||
eb4ff4d6 L |
809 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
810 | elf_i386_link_hash_newfunc, | |
66eb6687 | 811 | sizeof (struct elf_i386_link_hash_entry))) |
252b5132 | 812 | { |
e2d34d7d | 813 | free (ret); |
252b5132 RH |
814 | return NULL; |
815 | } | |
816 | ||
6725bdbf AM |
817 | ret->sdynbss = NULL; |
818 | ret->srelbss = NULL; | |
7a624474 | 819 | ret->tls_ldm_got.refcount = 0; |
5ae0bfb6 | 820 | ret->next_tls_desc_index = 0; |
67a4f2b7 | 821 | ret->sgotplt_jump_table_size = 0; |
87d72d41 | 822 | ret->sym_cache.abfd = NULL; |
eac338cf PB |
823 | ret->is_vxworks = 0; |
824 | ret->srelplt2 = NULL; | |
eac338cf | 825 | ret->plt0_pad_byte = 0; |
9f03412a | 826 | ret->tls_module_base = NULL; |
6725bdbf | 827 | |
c25bc9fc L |
828 | ret->loc_hash_table = htab_try_create (1024, |
829 | elf_i386_local_htab_hash, | |
830 | elf_i386_local_htab_eq, | |
831 | NULL); | |
832 | ret->loc_hash_memory = objalloc_create (); | |
833 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
834 | { | |
835 | free (ret); | |
836 | return NULL; | |
837 | } | |
838 | ||
ebe50bae | 839 | return &ret->elf.root; |
252b5132 RH |
840 | } |
841 | ||
c25bc9fc L |
842 | /* Destroy an i386 ELF linker hash table. */ |
843 | ||
844 | static void | |
845 | elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash) | |
846 | { | |
847 | struct elf_i386_link_hash_table *htab | |
848 | = (struct elf_i386_link_hash_table *) hash; | |
849 | ||
850 | if (htab->loc_hash_table) | |
851 | htab_delete (htab->loc_hash_table); | |
852 | if (htab->loc_hash_memory) | |
853 | objalloc_free ((struct objalloc *) htab->loc_hash_memory); | |
854 | _bfd_generic_link_hash_table_free (hash); | |
855 | } | |
856 | ||
6725bdbf AM |
857 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and |
858 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
859 | hash table. */ | |
860 | ||
b34976b6 | 861 | static bfd_boolean |
55fd94b0 | 862 | elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
6725bdbf AM |
863 | { |
864 | struct elf_i386_link_hash_table *htab; | |
865 | ||
6725bdbf | 866 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 867 | return FALSE; |
6725bdbf | 868 | |
6de2ae4a | 869 | htab = elf_i386_hash_table (info); |
6725bdbf AM |
870 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
871 | if (!info->shared) | |
872 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
873 | ||
6de2ae4a | 874 | if (!htab->sdynbss |
6725bdbf AM |
875 | || (!info->shared && !htab->srelbss)) |
876 | abort (); | |
877 | ||
711de32c | 878 | if (htab->is_vxworks |
6de2ae4a L |
879 | && !elf_vxworks_create_dynamic_sections (dynobj, info, |
880 | &htab->srelplt2)) | |
711de32c | 881 | return FALSE; |
eac338cf | 882 | |
b34976b6 | 883 | return TRUE; |
6725bdbf AM |
884 | } |
885 | ||
ebe50bae AM |
886 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
887 | ||
51b64d56 | 888 | static void |
fcfa13d2 | 889 | elf_i386_copy_indirect_symbol (struct bfd_link_info *info, |
55fd94b0 AM |
890 | struct elf_link_hash_entry *dir, |
891 | struct elf_link_hash_entry *ind) | |
ebe50bae AM |
892 | { |
893 | struct elf_i386_link_hash_entry *edir, *eind; | |
894 | ||
895 | edir = (struct elf_i386_link_hash_entry *) dir; | |
896 | eind = (struct elf_i386_link_hash_entry *) ind; | |
897 | ||
bbd7ec4a | 898 | if (eind->dyn_relocs != NULL) |
ebe50bae | 899 | { |
bbd7ec4a AM |
900 | if (edir->dyn_relocs != NULL) |
901 | { | |
e03a8ed8 L |
902 | struct elf_dyn_relocs **pp; |
903 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 904 | |
fcfa13d2 | 905 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
906 | list. Merge any entries against the same section. */ |
907 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
908 | { | |
e03a8ed8 | 909 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
910 | |
911 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
912 | if (q->sec == p->sec) | |
913 | { | |
914 | q->pc_count += p->pc_count; | |
915 | q->count += p->count; | |
916 | *pp = p->next; | |
917 | break; | |
918 | } | |
919 | if (q == NULL) | |
920 | pp = &p->next; | |
921 | } | |
922 | *pp = edir->dyn_relocs; | |
923 | } | |
924 | ||
ebe50bae AM |
925 | edir->dyn_relocs = eind->dyn_relocs; |
926 | eind->dyn_relocs = NULL; | |
927 | } | |
ebe50bae | 928 | |
cd67d266 JJ |
929 | if (ind->root.type == bfd_link_hash_indirect |
930 | && dir->got.refcount <= 0) | |
931 | { | |
932 | edir->tls_type = eind->tls_type; | |
933 | eind->tls_type = GOT_UNKNOWN; | |
934 | } | |
81848ca0 AM |
935 | |
936 | if (ELIMINATE_COPY_RELOCS | |
937 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
938 | && dir->dynamic_adjusted) |
939 | { | |
940 | /* If called to transfer flags for a weakdef during processing | |
941 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
942 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
943 | dir->ref_dynamic |= ind->ref_dynamic; | |
944 | dir->ref_regular |= ind->ref_regular; | |
945 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
946 | dir->needs_plt |= ind->needs_plt; | |
947 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
948 | } | |
81848ca0 | 949 | else |
fcfa13d2 | 950 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
ebe50bae AM |
951 | } |
952 | ||
142411ca L |
953 | typedef union |
954 | { | |
955 | unsigned char c[2]; | |
956 | uint16_t i; | |
957 | } | |
958 | i386_opcode16; | |
959 | ||
960 | /* Return TRUE if the TLS access code sequence support transition | |
961 | from R_TYPE. */ | |
962 | ||
963 | static bfd_boolean | |
964 | elf_i386_check_tls_transition (bfd *abfd, asection *sec, | |
965 | bfd_byte *contents, | |
966 | Elf_Internal_Shdr *symtab_hdr, | |
967 | struct elf_link_hash_entry **sym_hashes, | |
968 | unsigned int r_type, | |
969 | const Elf_Internal_Rela *rel, | |
970 | const Elf_Internal_Rela *relend) | |
13ae64f3 | 971 | { |
142411ca L |
972 | unsigned int val, type; |
973 | unsigned long r_symndx; | |
974 | struct elf_link_hash_entry *h; | |
975 | bfd_vma offset; | |
976 | ||
977 | /* Get the section contents. */ | |
978 | if (contents == NULL) | |
979 | { | |
980 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
981 | contents = elf_section_data (sec)->this_hdr.contents; | |
982 | else | |
983 | { | |
984 | /* FIXME: How to better handle error condition? */ | |
985 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
986 | return FALSE; | |
13ae64f3 | 987 | |
142411ca L |
988 | /* Cache the section contents for elf_link_input_bfd. */ |
989 | elf_section_data (sec)->this_hdr.contents = contents; | |
990 | } | |
991 | } | |
992 | ||
993 | offset = rel->r_offset; | |
13ae64f3 | 994 | switch (r_type) |
142411ca L |
995 | { |
996 | case R_386_TLS_GD: | |
997 | case R_386_TLS_LDM: | |
998 | if (offset < 2 || (rel + 1) >= relend) | |
999 | return FALSE; | |
1000 | ||
1001 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1002 | if (r_type == R_386_TLS_GD) | |
1003 | { | |
09e8c3bf | 1004 | /* Check transition from GD access model. Only |
142411ca L |
1005 | leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr |
1006 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop | |
1007 | can transit to different access model. */ | |
1008 | if ((offset + 10) > sec->size || | |
1009 | (type != 0x8d && type != 0x04)) | |
1010 | return FALSE; | |
1011 | ||
1012 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1013 | if (type == 0x04) | |
1014 | { | |
1015 | /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */ | |
1016 | if (offset < 3) | |
1017 | return FALSE; | |
1018 | ||
1019 | if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d) | |
1020 | return FALSE; | |
1021 | ||
1022 | if ((val & 0xc7) != 0x05 || val == (4 << 3)) | |
1023 | return FALSE; | |
1024 | } | |
1025 | else | |
1026 | { | |
1027 | /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */ | |
1028 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
1029 | return FALSE; | |
1030 | ||
1031 | if (bfd_get_8 (abfd, contents + offset + 9) != 0x90) | |
1032 | return FALSE; | |
1033 | } | |
1034 | } | |
1035 | else | |
1036 | { | |
1037 | /* Check transition from LD access model. Only | |
1038 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr | |
1039 | can transit to different access model. */ | |
1040 | if (type != 0x8d || (offset + 9) > sec->size) | |
1041 | return FALSE; | |
1042 | ||
1043 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1044 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
1045 | return FALSE; | |
1046 | } | |
1047 | ||
1048 | if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8) | |
1049 | return FALSE; | |
1050 | ||
1051 | r_symndx = ELF32_R_SYM (rel[1].r_info); | |
1052 | if (r_symndx < symtab_hdr->sh_info) | |
1053 | return FALSE; | |
1054 | ||
1055 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
c4fb387b L |
1056 | /* Use strncmp to check ___tls_get_addr since ___tls_get_addr |
1057 | may be versioned. */ | |
142411ca L |
1058 | return (h != NULL |
1059 | && h->root.root.string != NULL | |
1060 | && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32 | |
1061 | || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32) | |
c4fb387b L |
1062 | && (strncmp (h->root.root.string, "___tls_get_addr", |
1063 | 15) == 0)); | |
142411ca L |
1064 | |
1065 | case R_386_TLS_IE: | |
1066 | /* Check transition from IE access model: | |
1067 | movl foo@indntpoff(%rip), %eax | |
1068 | movl foo@indntpoff(%rip), %reg | |
1069 | addl foo@indntpoff(%rip), %reg | |
1070 | */ | |
1071 | ||
1072 | if (offset < 1 || (offset + 4) > sec->size) | |
1073 | return FALSE; | |
1074 | ||
1075 | /* Check "movl foo@tpoff(%rip), %eax" first. */ | |
1076 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1077 | if (val == 0xa1) | |
1078 | return TRUE; | |
1079 | ||
1080 | if (offset < 2) | |
1081 | return FALSE; | |
1082 | ||
1083 | /* Check movl|addl foo@tpoff(%rip), %reg. */ | |
1084 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1085 | return ((type == 0x8b || type == 0x03) | |
1086 | && (val & 0xc7) == 0x05); | |
1087 | ||
1088 | case R_386_TLS_GOTIE: | |
1089 | case R_386_TLS_IE_32: | |
1090 | /* Check transition from {IE_32,GOTIE} access model: | |
1091 | subl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1092 | movl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1093 | addl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1094 | */ | |
1095 | ||
1096 | if (offset < 2 || (offset + 4) > sec->size) | |
1097 | return FALSE; | |
1098 | ||
1099 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1100 | if ((val & 0xc0) != 0x80 || (val & 7) == 4) | |
1101 | return FALSE; | |
1102 | ||
1103 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1104 | return type == 0x8b || type == 0x2b || type == 0x03; | |
1105 | ||
1106 | case R_386_TLS_GOTDESC: | |
1107 | /* Check transition from GDesc access model: | |
1108 | leal x@tlsdesc(%ebx), %eax | |
1109 | ||
1110 | Make sure it's a leal adding ebx to a 32-bit offset | |
1111 | into any register, although it's probably almost always | |
1112 | going to be eax. */ | |
1113 | ||
1114 | if (offset < 2 || (offset + 4) > sec->size) | |
1115 | return FALSE; | |
1116 | ||
1117 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1118 | return FALSE; | |
1119 | ||
1120 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1121 | return (val & 0xc7) == 0x83; | |
1122 | ||
1123 | case R_386_TLS_DESC_CALL: | |
1124 | /* Check transition from GDesc access model: | |
1125 | call *x@tlsdesc(%rax) | |
1126 | */ | |
1127 | if (offset + 2 <= sec->size) | |
1128 | { | |
1129 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
1130 | static i386_opcode16 call = { { 0xff, 0x10 } }; | |
1131 | return bfd_get_16 (abfd, contents + offset) == call.i; | |
1132 | } | |
1133 | ||
1134 | return FALSE; | |
1135 | ||
1136 | default: | |
1137 | abort (); | |
1138 | } | |
1139 | } | |
1140 | ||
1141 | /* Return TRUE if the TLS access transition is OK or no transition | |
1142 | will be performed. Update R_TYPE if there is a transition. */ | |
1143 | ||
1144 | static bfd_boolean | |
1145 | elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd, | |
1146 | asection *sec, bfd_byte *contents, | |
1147 | Elf_Internal_Shdr *symtab_hdr, | |
1148 | struct elf_link_hash_entry **sym_hashes, | |
1149 | unsigned int *r_type, int tls_type, | |
1150 | const Elf_Internal_Rela *rel, | |
1151 | const Elf_Internal_Rela *relend, | |
4c544807 L |
1152 | struct elf_link_hash_entry *h, |
1153 | unsigned long r_symndx) | |
142411ca L |
1154 | { |
1155 | unsigned int from_type = *r_type; | |
1156 | unsigned int to_type = from_type; | |
1157 | bfd_boolean check = TRUE; | |
1158 | ||
1159 | switch (from_type) | |
13ae64f3 JJ |
1160 | { |
1161 | case R_386_TLS_GD: | |
67a4f2b7 AO |
1162 | case R_386_TLS_GOTDESC: |
1163 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 1164 | case R_386_TLS_IE_32: |
37e55690 JJ |
1165 | case R_386_TLS_IE: |
1166 | case R_386_TLS_GOTIE: | |
142411ca L |
1167 | if (!info->shared) |
1168 | { | |
1169 | if (h == NULL) | |
1170 | to_type = R_386_TLS_LE_32; | |
1171 | else if (from_type != R_386_TLS_IE | |
1172 | && from_type != R_386_TLS_GOTIE) | |
1173 | to_type = R_386_TLS_IE_32; | |
1174 | } | |
1175 | ||
1176 | /* When we are called from elf_i386_relocate_section, CONTENTS | |
1177 | isn't NULL and there may be additional transitions based on | |
1178 | TLS_TYPE. */ | |
1179 | if (contents != NULL) | |
1180 | { | |
1181 | unsigned int new_to_type = to_type; | |
1182 | ||
1183 | if (!info->shared | |
1184 | && h != NULL | |
1185 | && h->dynindx == -1 | |
1186 | && (tls_type & GOT_TLS_IE)) | |
1187 | new_to_type = R_386_TLS_LE_32; | |
1188 | ||
1189 | if (to_type == R_386_TLS_GD | |
1190 | || to_type == R_386_TLS_GOTDESC | |
1191 | || to_type == R_386_TLS_DESC_CALL) | |
1192 | { | |
1193 | if (tls_type == GOT_TLS_IE_POS) | |
1194 | new_to_type = R_386_TLS_GOTIE; | |
1195 | else if (tls_type & GOT_TLS_IE) | |
1196 | new_to_type = R_386_TLS_IE_32; | |
1197 | } | |
1198 | ||
1199 | /* We checked the transition before when we were called from | |
1200 | elf_i386_check_relocs. We only want to check the new | |
1201 | transition which hasn't been checked before. */ | |
1202 | check = new_to_type != to_type && from_type == to_type; | |
1203 | to_type = new_to_type; | |
1204 | } | |
1205 | ||
1206 | break; | |
1207 | ||
13ae64f3 | 1208 | case R_386_TLS_LDM: |
142411ca L |
1209 | if (!info->shared) |
1210 | to_type = R_386_TLS_LE_32; | |
1211 | break; | |
1212 | ||
1213 | default: | |
1214 | return TRUE; | |
1215 | } | |
1216 | ||
1217 | /* Return TRUE if there is no transition. */ | |
1218 | if (from_type == to_type) | |
1219 | return TRUE; | |
1220 | ||
1221 | /* Check if the transition can be performed. */ | |
1222 | if (check | |
1223 | && ! elf_i386_check_tls_transition (abfd, sec, contents, | |
1224 | symtab_hdr, sym_hashes, | |
1225 | from_type, rel, relend)) | |
1226 | { | |
2f629d23 | 1227 | reloc_howto_type *from, *to; |
4c544807 | 1228 | const char *name; |
142411ca L |
1229 | |
1230 | from = elf_i386_rtype_to_howto (abfd, from_type); | |
1231 | to = elf_i386_rtype_to_howto (abfd, to_type); | |
1232 | ||
4c544807 L |
1233 | if (h) |
1234 | name = h->root.root.string; | |
1235 | else | |
1236 | { | |
1237 | Elf_Internal_Sym *isym; | |
1238 | struct elf_i386_link_hash_table *htab; | |
1239 | htab = elf_i386_hash_table (info); | |
1240 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1241 | abfd, r_symndx); | |
1242 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1243 | } | |
1244 | ||
142411ca L |
1245 | (*_bfd_error_handler) |
1246 | (_("%B: TLS transition from %s to %s against `%s' at 0x%lx " | |
1247 | "in section `%A' failed"), | |
4c544807 | 1248 | abfd, sec, from->name, to->name, name, |
142411ca L |
1249 | (unsigned long) rel->r_offset); |
1250 | bfd_set_error (bfd_error_bad_value); | |
1251 | return FALSE; | |
13ae64f3 JJ |
1252 | } |
1253 | ||
142411ca L |
1254 | *r_type = to_type; |
1255 | return TRUE; | |
13ae64f3 JJ |
1256 | } |
1257 | ||
252b5132 | 1258 | /* Look through the relocs for a section during the first phase, and |
0ac8d2ca AM |
1259 | calculate needed space in the global offset table, procedure linkage |
1260 | table, and dynamic reloc sections. */ | |
252b5132 | 1261 | |
b34976b6 | 1262 | static bfd_boolean |
55fd94b0 AM |
1263 | elf_i386_check_relocs (bfd *abfd, |
1264 | struct bfd_link_info *info, | |
1265 | asection *sec, | |
1266 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1267 | { |
6725bdbf | 1268 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1269 | Elf_Internal_Shdr *symtab_hdr; |
1270 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
1271 | const Elf_Internal_Rela *rel; |
1272 | const Elf_Internal_Rela *rel_end; | |
252b5132 RH |
1273 | asection *sreloc; |
1274 | ||
1049f94e | 1275 | if (info->relocatable) |
b34976b6 | 1276 | return TRUE; |
252b5132 | 1277 | |
0ffa91dd NC |
1278 | BFD_ASSERT (is_i386_elf (abfd)); |
1279 | ||
6725bdbf | 1280 | htab = elf_i386_hash_table (info); |
0ffa91dd | 1281 | symtab_hdr = &elf_symtab_hdr (abfd); |
252b5132 | 1282 | sym_hashes = elf_sym_hashes (abfd); |
252b5132 | 1283 | |
252b5132 RH |
1284 | sreloc = NULL; |
1285 | ||
1286 | rel_end = relocs + sec->reloc_count; | |
1287 | for (rel = relocs; rel < rel_end; rel++) | |
1288 | { | |
13ae64f3 | 1289 | unsigned int r_type; |
252b5132 RH |
1290 | unsigned long r_symndx; |
1291 | struct elf_link_hash_entry *h; | |
4c544807 L |
1292 | Elf_Internal_Sym *isym; |
1293 | const char *name; | |
252b5132 RH |
1294 | |
1295 | r_symndx = ELF32_R_SYM (rel->r_info); | |
13ae64f3 | 1296 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 1297 | |
d9bc7a44 | 1298 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
f5f31454 | 1299 | { |
d003868e AM |
1300 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
1301 | abfd, | |
8f615d07 | 1302 | r_symndx); |
b34976b6 | 1303 | return FALSE; |
f5f31454 L |
1304 | } |
1305 | ||
252b5132 | 1306 | if (r_symndx < symtab_hdr->sh_info) |
c25bc9fc L |
1307 | { |
1308 | /* A local symbol. */ | |
c2e61a4e L |
1309 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1310 | abfd, r_symndx); | |
1311 | if (isym == NULL) | |
1312 | return FALSE; | |
c25bc9fc L |
1313 | |
1314 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
c25bc9fc L |
1315 | if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
1316 | { | |
1317 | h = elf_i386_get_local_sym_hash (htab, abfd, rel, | |
1318 | TRUE); | |
1319 | if (h == NULL) | |
c2e61a4e | 1320 | return FALSE; |
c25bc9fc L |
1321 | |
1322 | /* Fake a STT_GNU_IFUNC symbol. */ | |
1323 | h->type = STT_GNU_IFUNC; | |
1324 | h->def_regular = 1; | |
1325 | h->ref_regular = 1; | |
1326 | h->forced_local = 1; | |
1327 | h->root.type = bfd_link_hash_defined; | |
1328 | } | |
1329 | else | |
1330 | h = NULL; | |
1331 | } | |
252b5132 | 1332 | else |
71cb9464 | 1333 | { |
4c544807 | 1334 | isym = NULL; |
71cb9464 L |
1335 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1336 | while (h->root.type == bfd_link_hash_indirect | |
1337 | || h->root.type == bfd_link_hash_warning) | |
1338 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c25bc9fc | 1339 | } |
cbe950e9 | 1340 | |
c25bc9fc L |
1341 | if (h != NULL) |
1342 | { | |
cbe950e9 L |
1343 | /* Create the ifunc sections for static executables. If we |
1344 | never see an indirect function symbol nor we are building | |
1345 | a static executable, those sections will be empty and | |
1346 | won't appear in output. */ | |
1347 | switch (r_type) | |
1348 | { | |
1349 | default: | |
1350 | break; | |
1351 | ||
1352 | case R_386_32: | |
1353 | case R_386_PC32: | |
1354 | case R_386_PLT32: | |
1355 | case R_386_GOT32: | |
1356 | case R_386_GOTOFF: | |
6de2ae4a | 1357 | if (!_bfd_elf_create_ifunc_sections (abfd, info)) |
c2e61a4e | 1358 | return FALSE; |
cbe950e9 L |
1359 | break; |
1360 | } | |
1361 | ||
1362 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle | |
1363 | it here if it is defined in a non-shared object. */ | |
1364 | if (h->type == STT_GNU_IFUNC | |
1365 | && h->def_regular) | |
1366 | { | |
1367 | /* It is referenced by a non-shared object. */ | |
1368 | h->ref_regular = 1; | |
7ae26bc1 | 1369 | h->needs_plt = 1; |
cbe950e9 L |
1370 | |
1371 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
1372 | h->plt.refcount += 1; | |
1373 | ||
1374 | /* STT_GNU_IFUNC needs dynamic sections. */ | |
1375 | if (htab->elf.dynobj == NULL) | |
1376 | htab->elf.dynobj = abfd; | |
1377 | ||
1378 | switch (r_type) | |
1379 | { | |
048cbda4 | 1380 | default: |
4c544807 L |
1381 | if (h->root.root.string) |
1382 | name = h->root.root.string; | |
1383 | else | |
1384 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1385 | NULL); | |
048cbda4 L |
1386 | (*_bfd_error_handler) |
1387 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
1388 | "symbol `%s' isn't handled by %s"), abfd, | |
1389 | elf_howto_table[r_type].name, | |
4c544807 | 1390 | name, __FUNCTION__); |
048cbda4 | 1391 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1392 | return FALSE; |
cbe950e9 L |
1393 | |
1394 | case R_386_32: | |
710ab287 L |
1395 | h->non_got_ref = 1; |
1396 | h->pointer_equality_needed = 1; | |
1397 | if (info->shared) | |
1398 | { | |
710ab287 L |
1399 | /* We must copy these reloc types into the |
1400 | output file. Create a reloc section in | |
1401 | dynobj and make room for this reloc. */ | |
e03a8ed8 L |
1402 | sreloc = _bfd_elf_create_ifunc_dyn_reloc |
1403 | (abfd, info, sec, sreloc, | |
1404 | &((struct elf_i386_link_hash_entry *) h)->dyn_relocs); | |
710ab287 | 1405 | if (sreloc == NULL) |
c2e61a4e | 1406 | return FALSE; |
710ab287 L |
1407 | } |
1408 | break; | |
1409 | ||
cbe950e9 L |
1410 | case R_386_PC32: |
1411 | h->non_got_ref = 1; | |
cbe950e9 L |
1412 | break; |
1413 | ||
1414 | case R_386_PLT32: | |
1415 | break; | |
1416 | ||
1417 | case R_386_GOT32: | |
1418 | case R_386_GOTOFF: | |
7afd84dc | 1419 | h->got.refcount += 1; |
6de2ae4a L |
1420 | if (htab->elf.sgot == NULL |
1421 | && !_bfd_elf_create_got_section (htab->elf.dynobj, | |
cbe950e9 | 1422 | info)) |
c2e61a4e | 1423 | return FALSE; |
cbe950e9 L |
1424 | break; |
1425 | } | |
1426 | ||
1427 | continue; | |
1428 | } | |
71cb9464 | 1429 | } |
252b5132 | 1430 | |
142411ca L |
1431 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1432 | symtab_hdr, sym_hashes, | |
1433 | &r_type, GOT_UNKNOWN, | |
4c544807 | 1434 | rel, rel_end, h, r_symndx)) |
c2e61a4e | 1435 | return FALSE; |
13ae64f3 JJ |
1436 | |
1437 | switch (r_type) | |
252b5132 | 1438 | { |
37e55690 JJ |
1439 | case R_386_TLS_LDM: |
1440 | htab->tls_ldm_got.refcount += 1; | |
1441 | goto create_got; | |
1442 | ||
1443 | case R_386_PLT32: | |
1444 | /* This symbol requires a procedure linkage table entry. We | |
1445 | actually build the entry in adjust_dynamic_symbol, | |
1446 | because this might be a case of linking PIC code which is | |
1447 | never referenced by a dynamic object, in which case we | |
1448 | don't need to generate a procedure linkage table entry | |
1449 | after all. */ | |
1450 | ||
1451 | /* If this is a local symbol, we resolve it directly without | |
1452 | creating a procedure linkage table entry. */ | |
1453 | if (h == NULL) | |
1454 | continue; | |
1455 | ||
f5385ebf | 1456 | h->needs_plt = 1; |
37e55690 JJ |
1457 | h->plt.refcount += 1; |
1458 | break; | |
1459 | ||
13ae64f3 | 1460 | case R_386_TLS_IE_32: |
37e55690 JJ |
1461 | case R_386_TLS_IE: |
1462 | case R_386_TLS_GOTIE: | |
13ae64f3 JJ |
1463 | if (info->shared) |
1464 | info->flags |= DF_STATIC_TLS; | |
37e55690 JJ |
1465 | /* Fall through */ |
1466 | ||
252b5132 | 1467 | case R_386_GOT32: |
13ae64f3 | 1468 | case R_386_TLS_GD: |
67a4f2b7 AO |
1469 | case R_386_TLS_GOTDESC: |
1470 | case R_386_TLS_DESC_CALL: | |
252b5132 | 1471 | /* This symbol requires a global offset table entry. */ |
13ae64f3 JJ |
1472 | { |
1473 | int tls_type, old_tls_type; | |
1474 | ||
1475 | switch (r_type) | |
1476 | { | |
1477 | default: | |
1478 | case R_386_GOT32: tls_type = GOT_NORMAL; break; | |
1479 | case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; | |
67a4f2b7 AO |
1480 | case R_386_TLS_GOTDESC: |
1481 | case R_386_TLS_DESC_CALL: | |
1482 | tls_type = GOT_TLS_GDESC; break; | |
37e55690 JJ |
1483 | case R_386_TLS_IE_32: |
1484 | if (ELF32_R_TYPE (rel->r_info) == r_type) | |
1485 | tls_type = GOT_TLS_IE_NEG; | |
1486 | else | |
ebcfb3c0 JJ |
1487 | /* If this is a GD->IE transition, we may use either of |
1488 | R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ | |
37e55690 JJ |
1489 | tls_type = GOT_TLS_IE; |
1490 | break; | |
1491 | case R_386_TLS_IE: | |
1492 | case R_386_TLS_GOTIE: | |
1493 | tls_type = GOT_TLS_IE_POS; break; | |
13ae64f3 JJ |
1494 | } |
1495 | ||
1496 | if (h != NULL) | |
1497 | { | |
1498 | h->got.refcount += 1; | |
1499 | old_tls_type = elf_i386_hash_entry(h)->tls_type; | |
1500 | } | |
1501 | else | |
1502 | { | |
1503 | bfd_signed_vma *local_got_refcounts; | |
1504 | ||
1505 | /* This is a global offset table entry for a local symbol. */ | |
1506 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1507 | if (local_got_refcounts == NULL) | |
1508 | { | |
1509 | bfd_size_type size; | |
1510 | ||
1511 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
1512 | size *= (sizeof (bfd_signed_vma) |
1513 | + sizeof (bfd_vma) + sizeof(char)); | |
55fd94b0 | 1514 | local_got_refcounts = bfd_zalloc (abfd, size); |
13ae64f3 | 1515 | if (local_got_refcounts == NULL) |
c2e61a4e | 1516 | return FALSE; |
13ae64f3 | 1517 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
67a4f2b7 AO |
1518 | elf_i386_local_tlsdesc_gotent (abfd) |
1519 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); | |
13ae64f3 | 1520 | elf_i386_local_got_tls_type (abfd) |
67a4f2b7 | 1521 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
13ae64f3 JJ |
1522 | } |
1523 | local_got_refcounts[r_symndx] += 1; | |
1524 | old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx]; | |
1525 | } | |
1526 | ||
37e55690 JJ |
1527 | if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) |
1528 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1529 | /* If a TLS symbol is accessed using IE at least once, |
1530 | there is no point to use dynamic model for it. */ | |
ebcfb3c0 | 1531 | else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
67a4f2b7 | 1532 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
37e55690 | 1533 | || (tls_type & GOT_TLS_IE) == 0)) |
13ae64f3 | 1534 | { |
67a4f2b7 | 1535 | if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type)) |
37e55690 | 1536 | tls_type = old_tls_type; |
67a4f2b7 AO |
1537 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
1538 | && GOT_TLS_GD_ANY_P (tls_type)) | |
1539 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1540 | else |
1541 | { | |
09a24cbf | 1542 | if (h) |
4c544807 L |
1543 | name = h->root.root.string; |
1544 | else | |
1545 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1546 | NULL); | |
13ae64f3 | 1547 | (*_bfd_error_handler) |
d003868e | 1548 | (_("%B: `%s' accessed both as normal and " |
55fd94b0 | 1549 | "thread local symbol"), |
4c544807 | 1550 | abfd, name); |
c2e61a4e | 1551 | return FALSE; |
13ae64f3 JJ |
1552 | } |
1553 | } | |
1554 | ||
1555 | if (old_tls_type != tls_type) | |
1556 | { | |
1557 | if (h != NULL) | |
1558 | elf_i386_hash_entry (h)->tls_type = tls_type; | |
1559 | else | |
1560 | elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1561 | } | |
1562 | } | |
0ac8d2ca AM |
1563 | /* Fall through */ |
1564 | ||
1565 | case R_386_GOTOFF: | |
1566 | case R_386_GOTPC: | |
13ae64f3 | 1567 | create_got: |
6de2ae4a | 1568 | if (htab->elf.sgot == NULL) |
0ac8d2ca AM |
1569 | { |
1570 | if (htab->elf.dynobj == NULL) | |
1571 | htab->elf.dynobj = abfd; | |
6de2ae4a | 1572 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) |
c2e61a4e | 1573 | return FALSE; |
0ac8d2ca | 1574 | } |
37e55690 JJ |
1575 | if (r_type != R_386_TLS_IE) |
1576 | break; | |
1577 | /* Fall through */ | |
252b5132 | 1578 | |
37e55690 JJ |
1579 | case R_386_TLS_LE_32: |
1580 | case R_386_TLS_LE: | |
1581 | if (!info->shared) | |
1582 | break; | |
bffbf940 | 1583 | info->flags |= DF_STATIC_TLS; |
b34976b6 | 1584 | /* Fall through */ |
252b5132 RH |
1585 | |
1586 | case R_386_32: | |
1587 | case R_386_PC32: | |
710ab287 | 1588 | if (h != NULL && info->executable) |
6725bdbf | 1589 | { |
12d0ee4a | 1590 | /* If this reloc is in a read-only section, we might |
ebe50bae AM |
1591 | need a copy reloc. We can't check reliably at this |
1592 | stage whether the section is read-only, as input | |
1593 | sections have not yet been mapped to output sections. | |
1594 | Tentatively set the flag for now, and correct in | |
1595 | adjust_dynamic_symbol. */ | |
f5385ebf | 1596 | h->non_got_ref = 1; |
12d0ee4a AM |
1597 | |
1598 | /* We may need a .plt entry if the function this reloc | |
1599 | refers to is in a shared lib. */ | |
51b64d56 | 1600 | h->plt.refcount += 1; |
c6585bbb | 1601 | if (r_type != R_386_PC32) |
f5385ebf | 1602 | h->pointer_equality_needed = 1; |
6725bdbf | 1603 | } |
7843f00e | 1604 | |
252b5132 | 1605 | /* If we are creating a shared library, and this is a reloc |
f69da49f AM |
1606 | against a global symbol, or a non PC relative reloc |
1607 | against a local symbol, then we need to copy the reloc | |
1608 | into the shared library. However, if we are linking with | |
1609 | -Bsymbolic, we do not need to copy a reloc against a | |
1610 | global symbol which is defined in an object we are | |
1611 | including in the link (i.e., DEF_REGULAR is set). At | |
1612 | this point we have not seen all the input files, so it is | |
1613 | possible that DEF_REGULAR is not set now but will be set | |
1f655a09 L |
1614 | later (it is never cleared). In case of a weak definition, |
1615 | DEF_REGULAR may be cleared later by a strong definition in | |
ebe50bae | 1616 | a shared library. We account for that possibility below by |
1f655a09 L |
1617 | storing information in the relocs_copied field of the hash |
1618 | table entry. A similar situation occurs when creating | |
1619 | shared libraries and symbol visibility changes render the | |
12d0ee4a | 1620 | symbol local. |
56882138 | 1621 | |
12d0ee4a AM |
1622 | If on the other hand, we are creating an executable, we |
1623 | may need to keep relocations for symbols satisfied by a | |
1624 | dynamic library if we manage to avoid copy relocs for the | |
1625 | symbol. */ | |
1626 | if ((info->shared | |
1627 | && (sec->flags & SEC_ALLOC) != 0 | |
13ae64f3 | 1628 | && (r_type != R_386_PC32 |
12d0ee4a | 1629 | || (h != NULL |
55255dae | 1630 | && (! SYMBOLIC_BIND (info, h) |
12d0ee4a | 1631 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1632 | || !h->def_regular)))) |
a23b6845 AM |
1633 | || (ELIMINATE_COPY_RELOCS |
1634 | && !info->shared | |
12d0ee4a AM |
1635 | && (sec->flags & SEC_ALLOC) != 0 |
1636 | && h != NULL | |
12d0ee4a | 1637 | && (h->root.type == bfd_link_hash_defweak |
0f88be7a | 1638 | || !h->def_regular))) |
252b5132 | 1639 | { |
e03a8ed8 L |
1640 | struct elf_dyn_relocs *p; |
1641 | struct elf_dyn_relocs **head; | |
ec338859 | 1642 | |
12d0ee4a AM |
1643 | /* We must copy these reloc types into the output file. |
1644 | Create a reloc section in dynobj and make room for | |
1645 | this reloc. */ | |
252b5132 RH |
1646 | if (sreloc == NULL) |
1647 | { | |
0ac8d2ca AM |
1648 | if (htab->elf.dynobj == NULL) |
1649 | htab->elf.dynobj = abfd; | |
1650 | ||
83bac4b0 NC |
1651 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1652 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE); | |
1653 | ||
252b5132 | 1654 | if (sreloc == NULL) |
c2e61a4e | 1655 | return FALSE; |
252b5132 RH |
1656 | } |
1657 | ||
0c715baa AM |
1658 | /* If this is a global symbol, we count the number of |
1659 | relocations we need for this symbol. */ | |
1660 | if (h != NULL) | |
252b5132 | 1661 | { |
ec338859 | 1662 | head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs; |
0c715baa AM |
1663 | } |
1664 | else | |
1665 | { | |
ec338859 AM |
1666 | /* Track dynamic relocs needed for local syms too. |
1667 | We really need local syms available to do this | |
1668 | easily. Oh well. */ | |
87d72d41 | 1669 | void **vpp; |
ec338859 | 1670 | asection *s; |
87d72d41 AM |
1671 | Elf_Internal_Sym *isym; |
1672 | ||
1673 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1674 | abfd, r_symndx); | |
1675 | if (isym == NULL) | |
1676 | return FALSE; | |
1677 | ||
1678 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
ec338859 | 1679 | if (s == NULL) |
87d72d41 | 1680 | s = sec; |
ec338859 | 1681 | |
e81d3500 | 1682 | vpp = &elf_section_data (s)->local_dynrel; |
e03a8ed8 | 1683 | head = (struct elf_dyn_relocs **)vpp; |
ec338859 AM |
1684 | } |
1685 | ||
1686 | p = *head; | |
1687 | if (p == NULL || p->sec != sec) | |
1688 | { | |
1689 | bfd_size_type amt = sizeof *p; | |
55fd94b0 | 1690 | p = bfd_alloc (htab->elf.dynobj, amt); |
ec338859 | 1691 | if (p == NULL) |
c2e61a4e | 1692 | return FALSE; |
ec338859 AM |
1693 | p->next = *head; |
1694 | *head = p; | |
1695 | p->sec = sec; | |
1696 | p->count = 0; | |
1697 | p->pc_count = 0; | |
252b5132 | 1698 | } |
ec338859 AM |
1699 | |
1700 | p->count += 1; | |
13ae64f3 | 1701 | if (r_type == R_386_PC32) |
ec338859 | 1702 | p->pc_count += 1; |
252b5132 | 1703 | } |
252b5132 RH |
1704 | break; |
1705 | ||
1706 | /* This relocation describes the C++ object vtable hierarchy. | |
1707 | Reconstruct it for later use during GC. */ | |
1708 | case R_386_GNU_VTINHERIT: | |
d17e0c6e | 1709 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
c2e61a4e | 1710 | return FALSE; |
252b5132 RH |
1711 | break; |
1712 | ||
1713 | /* This relocation describes which C++ vtable entries are actually | |
1714 | used. Record for later use during GC. */ | |
1715 | case R_386_GNU_VTENTRY: | |
c6aa130f MS |
1716 | BFD_ASSERT (h != NULL); |
1717 | if (h != NULL | |
1718 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
c2e61a4e | 1719 | return FALSE; |
252b5132 RH |
1720 | break; |
1721 | ||
1722 | default: | |
1723 | break; | |
1724 | } | |
1725 | } | |
1726 | ||
b34976b6 | 1727 | return TRUE; |
252b5132 RH |
1728 | } |
1729 | ||
1730 | /* Return the section that should be marked against GC for a given | |
1731 | relocation. */ | |
1732 | ||
1733 | static asection * | |
55fd94b0 | 1734 | elf_i386_gc_mark_hook (asection *sec, |
07adf181 | 1735 | struct bfd_link_info *info, |
55fd94b0 AM |
1736 | Elf_Internal_Rela *rel, |
1737 | struct elf_link_hash_entry *h, | |
1738 | Elf_Internal_Sym *sym) | |
252b5132 RH |
1739 | { |
1740 | if (h != NULL) | |
07adf181 AM |
1741 | switch (ELF32_R_TYPE (rel->r_info)) |
1742 | { | |
1743 | case R_386_GNU_VTINHERIT: | |
1744 | case R_386_GNU_VTENTRY: | |
1745 | return NULL; | |
1746 | } | |
1747 | ||
1748 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
1749 | } |
1750 | ||
1751 | /* Update the got entry reference counts for the section being removed. */ | |
1752 | ||
b34976b6 | 1753 | static bfd_boolean |
55fd94b0 AM |
1754 | elf_i386_gc_sweep_hook (bfd *abfd, |
1755 | struct bfd_link_info *info, | |
1756 | asection *sec, | |
1757 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1758 | { |
dd5724d5 AM |
1759 | Elf_Internal_Shdr *symtab_hdr; |
1760 | struct elf_link_hash_entry **sym_hashes; | |
1761 | bfd_signed_vma *local_got_refcounts; | |
1762 | const Elf_Internal_Rela *rel, *relend; | |
dd5724d5 | 1763 | |
7dda2462 TG |
1764 | if (info->relocatable) |
1765 | return TRUE; | |
1766 | ||
ec338859 | 1767 | elf_section_data (sec)->local_dynrel = NULL; |
dd5724d5 | 1768 | |
0ffa91dd | 1769 | symtab_hdr = &elf_symtab_hdr (abfd); |
6725bdbf AM |
1770 | sym_hashes = elf_sym_hashes (abfd); |
1771 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
dd5724d5 AM |
1772 | |
1773 | relend = relocs + sec->reloc_count; | |
1774 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1775 | { |
1776 | unsigned long r_symndx; | |
1777 | unsigned int r_type; | |
1778 | struct elf_link_hash_entry *h = NULL; | |
37e55690 | 1779 | |
26e41594 AM |
1780 | r_symndx = ELF32_R_SYM (rel->r_info); |
1781 | if (r_symndx >= symtab_hdr->sh_info) | |
1782 | { | |
1783 | struct elf_i386_link_hash_entry *eh; | |
e03a8ed8 L |
1784 | struct elf_dyn_relocs **pp; |
1785 | struct elf_dyn_relocs *p; | |
dd5724d5 | 1786 | |
26e41594 | 1787 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1788 | while (h->root.type == bfd_link_hash_indirect |
1789 | || h->root.type == bfd_link_hash_warning) | |
1790 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1791 | eh = (struct elf_i386_link_hash_entry *) h; |
0c715baa | 1792 | |
26e41594 AM |
1793 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1794 | if (p->sec == sec) | |
1795 | { | |
1796 | /* Everything must go for SEC. */ | |
1797 | *pp = p->next; | |
1798 | break; | |
1799 | } | |
1800 | } | |
0c715baa | 1801 | |
26e41594 | 1802 | r_type = ELF32_R_TYPE (rel->r_info); |
142411ca L |
1803 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1804 | symtab_hdr, sym_hashes, | |
1805 | &r_type, GOT_UNKNOWN, | |
4c544807 | 1806 | rel, relend, h, r_symndx)) |
142411ca L |
1807 | return FALSE; |
1808 | ||
26e41594 AM |
1809 | switch (r_type) |
1810 | { | |
1811 | case R_386_TLS_LDM: | |
1812 | if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0) | |
1813 | elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1; | |
1814 | break; | |
0c715baa | 1815 | |
26e41594 | 1816 | case R_386_TLS_GD: |
67a4f2b7 AO |
1817 | case R_386_TLS_GOTDESC: |
1818 | case R_386_TLS_DESC_CALL: | |
26e41594 AM |
1819 | case R_386_TLS_IE_32: |
1820 | case R_386_TLS_IE: | |
1821 | case R_386_TLS_GOTIE: | |
1822 | case R_386_GOT32: | |
1823 | if (h != NULL) | |
1824 | { | |
1825 | if (h->got.refcount > 0) | |
1826 | h->got.refcount -= 1; | |
1827 | } | |
1828 | else if (local_got_refcounts != NULL) | |
1829 | { | |
1830 | if (local_got_refcounts[r_symndx] > 0) | |
1831 | local_got_refcounts[r_symndx] -= 1; | |
1832 | } | |
1833 | break; | |
0c715baa | 1834 | |
26e41594 AM |
1835 | case R_386_32: |
1836 | case R_386_PC32: | |
1837 | if (info->shared) | |
1838 | break; | |
1839 | /* Fall through */ | |
6725bdbf | 1840 | |
26e41594 AM |
1841 | case R_386_PLT32: |
1842 | if (h != NULL) | |
1843 | { | |
1844 | if (h->plt.refcount > 0) | |
1845 | h->plt.refcount -= 1; | |
1846 | } | |
1847 | break; | |
dd5724d5 | 1848 | |
26e41594 AM |
1849 | default: |
1850 | break; | |
1851 | } | |
1852 | } | |
252b5132 | 1853 | |
b34976b6 | 1854 | return TRUE; |
252b5132 RH |
1855 | } |
1856 | ||
1857 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1858 | regular object. The current definition is in some section of the | |
1859 | dynamic object, but we're not including those sections. We have to | |
1860 | change the definition to something the rest of the link can | |
1861 | understand. */ | |
1862 | ||
b34976b6 | 1863 | static bfd_boolean |
55fd94b0 AM |
1864 | elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info, |
1865 | struct elf_link_hash_entry *h) | |
252b5132 | 1866 | { |
6725bdbf | 1867 | struct elf_i386_link_hash_table *htab; |
252b5132 | 1868 | asection *s; |
252b5132 | 1869 | |
cbe950e9 L |
1870 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1871 | if (h->type == STT_GNU_IFUNC) | |
1872 | { | |
1873 | if (h->plt.refcount <= 0) | |
1874 | { | |
1875 | h->plt.offset = (bfd_vma) -1; | |
1876 | h->needs_plt = 0; | |
1877 | } | |
1878 | return TRUE; | |
1879 | } | |
1880 | ||
252b5132 RH |
1881 | /* If this is a function, put it in the procedure linkage table. We |
1882 | will fill in the contents of the procedure linkage table later, | |
1883 | when we know the address of the .got section. */ | |
1884 | if (h->type == STT_FUNC | |
f5385ebf | 1885 | || h->needs_plt) |
252b5132 | 1886 | { |
6725bdbf | 1887 | if (h->plt.refcount <= 0 |
9c7a29a3 AM |
1888 | || SYMBOL_CALLS_LOCAL (info, h) |
1889 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1890 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
1891 | { |
1892 | /* This case can occur if we saw a PLT32 reloc in an input | |
dd5724d5 AM |
1893 | file, but the symbol was never referred to by a dynamic |
1894 | object, or if all references were garbage collected. In | |
1895 | such a case, we don't actually need to build a procedure | |
1896 | linkage table, and we can just do a PC32 reloc instead. */ | |
bbd7ec4a | 1897 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1898 | h->needs_plt = 0; |
252b5132 RH |
1899 | } |
1900 | ||
b34976b6 | 1901 | return TRUE; |
252b5132 | 1902 | } |
6725bdbf AM |
1903 | else |
1904 | /* It's possible that we incorrectly decided a .plt reloc was | |
1905 | needed for an R_386_PC32 reloc to a non-function sym in | |
1906 | check_relocs. We can't decide accurately between function and | |
1907 | non-function syms in check-relocs; Objects loaded later in | |
1908 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1909 | h->plt.offset = (bfd_vma) -1; |
252b5132 RH |
1910 | |
1911 | /* If this is a weak symbol, and there is a real definition, the | |
1912 | processor independent code will have arranged for us to see the | |
1913 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1914 | if (h->u.weakdef != NULL) |
252b5132 | 1915 | { |
f6e332e6 AM |
1916 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1917 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1918 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1919 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 1920 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 1921 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 1922 | return TRUE; |
252b5132 RH |
1923 | } |
1924 | ||
1925 | /* This is a reference to a symbol defined by a dynamic object which | |
1926 | is not a function. */ | |
1927 | ||
1928 | /* If we are creating a shared library, we must presume that the | |
1929 | only references to the symbol are via the global offset table. | |
1930 | For such cases we need not do anything here; the relocations will | |
1931 | be handled correctly by relocate_section. */ | |
1932 | if (info->shared) | |
b34976b6 | 1933 | return TRUE; |
252b5132 | 1934 | |
7843f00e ILT |
1935 | /* If there are no references to this symbol that do not use the |
1936 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1937 | if (!h->non_got_ref) |
b34976b6 | 1938 | return TRUE; |
7843f00e | 1939 | |
8bd621d8 AM |
1940 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1941 | if (info->nocopyreloc) | |
1942 | { | |
f5385ebf | 1943 | h->non_got_ref = 0; |
b34976b6 | 1944 | return TRUE; |
8bd621d8 AM |
1945 | } |
1946 | ||
643796e3 DJ |
1947 | htab = elf_i386_hash_table (info); |
1948 | ||
1949 | /* If there aren't any dynamic relocs in read-only sections, then | |
1950 | we can keep the dynamic relocs and avoid the copy reloc. This | |
1951 | doesn't work on VxWorks, where we can not have dynamic relocations | |
1952 | (other than copy and jump slot relocations) in an executable. */ | |
1953 | if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks) | |
ebe50bae | 1954 | { |
a23b6845 | 1955 | struct elf_i386_link_hash_entry * eh; |
e03a8ed8 | 1956 | struct elf_dyn_relocs *p; |
ebe50bae | 1957 | |
a23b6845 AM |
1958 | eh = (struct elf_i386_link_hash_entry *) h; |
1959 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1960 | { | |
1961 | s = p->sec->output_section; | |
1962 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1963 | break; | |
1964 | } | |
1965 | ||
a23b6845 AM |
1966 | if (p == NULL) |
1967 | { | |
f5385ebf | 1968 | h->non_got_ref = 0; |
a23b6845 AM |
1969 | return TRUE; |
1970 | } | |
ebe50bae AM |
1971 | } |
1972 | ||
909272ee AM |
1973 | if (h->size == 0) |
1974 | { | |
1975 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
1976 | h->root.root.string); | |
1977 | return TRUE; | |
1978 | } | |
1979 | ||
252b5132 RH |
1980 | /* We must allocate the symbol in our .dynbss section, which will |
1981 | become part of the .bss section of the executable. There will be | |
1982 | an entry for this symbol in the .dynsym section. The dynamic | |
1983 | object will contain position independent code, so all references | |
1984 | from the dynamic object to this symbol will go through the global | |
1985 | offset table. The dynamic linker will use the .dynsym entry to | |
1986 | determine the address it must put in the global offset table, so | |
1987 | both the dynamic object and the regular object will refer to the | |
1988 | same memory location for the variable. */ | |
1989 | ||
252b5132 RH |
1990 | /* We must generate a R_386_COPY reloc to tell the dynamic linker to |
1991 | copy the initial value out of the dynamic object and into the | |
0ac8d2ca | 1992 | runtime process image. */ |
252b5132 RH |
1993 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1994 | { | |
eea6121a | 1995 | htab->srelbss->size += sizeof (Elf32_External_Rel); |
f5385ebf | 1996 | h->needs_copy = 1; |
252b5132 RH |
1997 | } |
1998 | ||
0ac8d2ca | 1999 | s = htab->sdynbss; |
252b5132 | 2000 | |
027297b7 | 2001 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
2002 | } |
2003 | ||
6725bdbf | 2004 | /* Allocate space in .plt, .got and associated reloc sections for |
0c715baa | 2005 | dynamic relocs. */ |
6725bdbf | 2006 | |
b34976b6 | 2007 | static bfd_boolean |
eb4ff4d6 | 2008 | elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
6725bdbf AM |
2009 | { |
2010 | struct bfd_link_info *info; | |
2011 | struct elf_i386_link_hash_table *htab; | |
5a15f56f | 2012 | struct elf_i386_link_hash_entry *eh; |
e03a8ed8 | 2013 | struct elf_dyn_relocs *p; |
6725bdbf | 2014 | |
e92d460e | 2015 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 2016 | return TRUE; |
6725bdbf | 2017 | |
e92d460e AM |
2018 | if (h->root.type == bfd_link_hash_warning) |
2019 | /* When warning symbols are created, they **replace** the "real" | |
2020 | entry in the hash table, thus we never get to see the real | |
2021 | symbol in a hash traversal. So look at it now. */ | |
2022 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
cbe950e9 | 2023 | eh = (struct elf_i386_link_hash_entry *) h; |
e92d460e | 2024 | |
6725bdbf AM |
2025 | info = (struct bfd_link_info *) inf; |
2026 | htab = elf_i386_hash_table (info); | |
2027 | ||
cbe950e9 L |
2028 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
2029 | here if it is defined and referenced in a non-shared object. */ | |
2030 | if (h->type == STT_GNU_IFUNC | |
2031 | && h->def_regular) | |
e03a8ed8 L |
2032 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, |
2033 | &eh->dyn_relocs, | |
2034 | PLT_ENTRY_SIZE, 4); | |
cbe950e9 L |
2035 | else if (htab->elf.dynamic_sections_created |
2036 | && h->plt.refcount > 0) | |
6725bdbf | 2037 | { |
5a15f56f AM |
2038 | /* Make sure this symbol is output as a dynamic symbol. |
2039 | Undefined weak syms won't yet be marked as dynamic. */ | |
2040 | if (h->dynindx == -1 | |
f5385ebf | 2041 | && !h->forced_local) |
5a15f56f | 2042 | { |
c152c796 | 2043 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2044 | return FALSE; |
5a15f56f AM |
2045 | } |
2046 | ||
4e795f50 AM |
2047 | if (info->shared |
2048 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
ced53ee5 | 2049 | { |
6de2ae4a | 2050 | asection *s = htab->elf.splt; |
6725bdbf | 2051 | |
ced53ee5 AM |
2052 | /* If this is the first .plt entry, make room for the special |
2053 | first entry. */ | |
eea6121a AM |
2054 | if (s->size == 0) |
2055 | s->size += PLT_ENTRY_SIZE; | |
6725bdbf | 2056 | |
eea6121a | 2057 | h->plt.offset = s->size; |
6725bdbf | 2058 | |
ced53ee5 AM |
2059 | /* If this symbol is not defined in a regular file, and we are |
2060 | not generating a shared library, then set the symbol to this | |
2061 | location in the .plt. This is required to make function | |
2062 | pointers compare as equal between the normal executable and | |
2063 | the shared library. */ | |
2064 | if (! info->shared | |
f5385ebf | 2065 | && !h->def_regular) |
ced53ee5 AM |
2066 | { |
2067 | h->root.u.def.section = s; | |
2068 | h->root.u.def.value = h->plt.offset; | |
2069 | } | |
6725bdbf | 2070 | |
ced53ee5 | 2071 | /* Make room for this entry. */ |
eea6121a | 2072 | s->size += PLT_ENTRY_SIZE; |
6725bdbf | 2073 | |
ced53ee5 AM |
2074 | /* We also need to make an entry in the .got.plt section, which |
2075 | will be placed in the .got section by the linker script. */ | |
6de2ae4a | 2076 | htab->elf.sgotplt->size += 4; |
6725bdbf | 2077 | |
6725bdbf | 2078 | /* We also need to make an entry in the .rel.plt section. */ |
6de2ae4a | 2079 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
5ae0bfb6 | 2080 | htab->next_tls_desc_index++; |
eac338cf PB |
2081 | |
2082 | if (htab->is_vxworks && !info->shared) | |
2083 | { | |
2084 | /* VxWorks has a second set of relocations for each PLT entry | |
2085 | in executables. They go in a separate relocation section, | |
2086 | which is processed by the kernel loader. */ | |
2087 | ||
2088 | /* There are two relocations for the initial PLT entry: an | |
2089 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an | |
2090 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
2091 | ||
2092 | if (h->plt.offset == PLT_ENTRY_SIZE) | |
2093 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); | |
2094 | ||
2095 | /* There are two extra relocations for each subsequent PLT entry: | |
2096 | an R_386_32 relocation for the GOT entry, and an R_386_32 | |
2097 | relocation for the PLT entry. */ | |
2098 | ||
2099 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); | |
2100 | } | |
6725bdbf | 2101 | } |
ced53ee5 AM |
2102 | else |
2103 | { | |
51b64d56 | 2104 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2105 | h->needs_plt = 0; |
ced53ee5 | 2106 | } |
6725bdbf AM |
2107 | } |
2108 | else | |
2109 | { | |
51b64d56 | 2110 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2111 | h->needs_plt = 0; |
6725bdbf AM |
2112 | } |
2113 | ||
67a4f2b7 AO |
2114 | eh->tlsdesc_got = (bfd_vma) -1; |
2115 | ||
37e55690 | 2116 | /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, |
13ae64f3 JJ |
2117 | make it a R_386_TLS_LE_32 requiring no TLS entry. */ |
2118 | if (h->got.refcount > 0 | |
2119 | && !info->shared | |
2120 | && h->dynindx == -1 | |
37e55690 | 2121 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE)) |
cedb70c5 | 2122 | h->got.offset = (bfd_vma) -1; |
13ae64f3 | 2123 | else if (h->got.refcount > 0) |
6725bdbf | 2124 | { |
0ac8d2ca | 2125 | asection *s; |
b34976b6 | 2126 | bfd_boolean dyn; |
13ae64f3 | 2127 | int tls_type = elf_i386_hash_entry(h)->tls_type; |
6725bdbf | 2128 | |
5a15f56f AM |
2129 | /* Make sure this symbol is output as a dynamic symbol. |
2130 | Undefined weak syms won't yet be marked as dynamic. */ | |
2131 | if (h->dynindx == -1 | |
f5385ebf | 2132 | && !h->forced_local) |
5a15f56f | 2133 | { |
c152c796 | 2134 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2135 | return FALSE; |
5a15f56f AM |
2136 | } |
2137 | ||
6de2ae4a | 2138 | s = htab->elf.sgot; |
67a4f2b7 AO |
2139 | if (GOT_TLS_GDESC_P (tls_type)) |
2140 | { | |
6de2ae4a | 2141 | eh->tlsdesc_got = htab->elf.sgotplt->size |
67a4f2b7 | 2142 | - elf_i386_compute_jump_table_size (htab); |
6de2ae4a | 2143 | htab->elf.sgotplt->size += 8; |
67a4f2b7 AO |
2144 | h->got.offset = (bfd_vma) -2; |
2145 | } | |
2146 | if (! GOT_TLS_GDESC_P (tls_type) | |
2147 | || GOT_TLS_GD_P (tls_type)) | |
2148 | { | |
2149 | h->got.offset = s->size; | |
2150 | s->size += 4; | |
2151 | /* R_386_TLS_GD needs 2 consecutive GOT slots. */ | |
2152 | if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH) | |
2153 | s->size += 4; | |
2154 | } | |
ebe50bae | 2155 | dyn = htab->elf.dynamic_sections_created; |
13ae64f3 | 2156 | /* R_386_TLS_IE_32 needs one dynamic relocation, |
37e55690 JJ |
2157 | R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, |
2158 | (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we | |
2159 | need two), R_386_TLS_GD needs one if local symbol and two if | |
2160 | global. */ | |
2161 | if (tls_type == GOT_TLS_IE_BOTH) | |
6de2ae4a | 2162 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 | 2163 | else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1) |
37e55690 | 2164 | || (tls_type & GOT_TLS_IE)) |
6de2ae4a | 2165 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2166 | else if (GOT_TLS_GD_P (tls_type)) |
6de2ae4a | 2167 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2168 | else if (! GOT_TLS_GDESC_P (tls_type) |
2169 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2170 | || h->root.type != bfd_link_hash_undefweak) | |
ef5aade5 L |
2171 | && (info->shared |
2172 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
6de2ae4a | 2173 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2174 | if (GOT_TLS_GDESC_P (tls_type)) |
6de2ae4a | 2175 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
6725bdbf AM |
2176 | } |
2177 | else | |
51b64d56 | 2178 | h->got.offset = (bfd_vma) -1; |
6725bdbf | 2179 | |
5a15f56f | 2180 | if (eh->dyn_relocs == NULL) |
b34976b6 | 2181 | return TRUE; |
5a15f56f | 2182 | |
0c715baa AM |
2183 | /* In the shared -Bsymbolic case, discard space allocated for |
2184 | dynamic pc-relative relocs against symbols which turn out to be | |
2185 | defined in regular objects. For the normal shared case, discard | |
0ac8d2ca AM |
2186 | space for pc-relative relocs that have become local due to symbol |
2187 | visibility changes. */ | |
0c715baa AM |
2188 | |
2189 | if (info->shared) | |
5a15f56f | 2190 | { |
09695f56 AM |
2191 | /* The only reloc that uses pc_count is R_386_PC32, which will |
2192 | appear on a call or on something like ".long foo - .". We | |
2193 | want calls to protected symbols to resolve directly to the | |
2194 | function rather than going via the plt. If people want | |
2195 | function pointer comparisons to work as expected then they | |
2196 | should avoid writing assembly like ".long foo - .". */ | |
2197 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
5a15f56f | 2198 | { |
e03a8ed8 | 2199 | struct elf_dyn_relocs **pp; |
0c715baa AM |
2200 | |
2201 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2202 | { | |
2203 | p->count -= p->pc_count; | |
2204 | p->pc_count = 0; | |
2205 | if (p->count == 0) | |
2206 | *pp = p->next; | |
2207 | else | |
2208 | pp = &p->next; | |
2209 | } | |
5a15f56f | 2210 | } |
4e795f50 | 2211 | |
3348747a NS |
2212 | if (htab->is_vxworks) |
2213 | { | |
e03a8ed8 | 2214 | struct elf_dyn_relocs **pp; |
3348747a NS |
2215 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
2216 | { | |
2217 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
2218 | *pp = p->next; | |
2219 | else | |
2220 | pp = &p->next; | |
2221 | } | |
2222 | } | |
2223 | ||
4e795f50 | 2224 | /* Also discard relocs on undefined weak syms with non-default |
3348747a | 2225 | visibility. */ |
22d606e9 | 2226 | if (eh->dyn_relocs != NULL |
4e795f50 | 2227 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
2228 | { |
2229 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2230 | eh->dyn_relocs = NULL; | |
2231 | ||
2232 | /* Make sure undefined weak symbols are output as a dynamic | |
2233 | symbol in PIEs. */ | |
2234 | else if (h->dynindx == -1 | |
2235 | && !h->forced_local) | |
2236 | { | |
2237 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2238 | return FALSE; | |
2239 | } | |
2240 | } | |
0c715baa | 2241 | } |
a23b6845 | 2242 | else if (ELIMINATE_COPY_RELOCS) |
0c715baa AM |
2243 | { |
2244 | /* For the non-shared case, discard space for relocs against | |
2245 | symbols which turn out to need copy relocs or are not | |
2246 | dynamic. */ | |
2247 | ||
f5385ebf AM |
2248 | if (!h->non_got_ref |
2249 | && ((h->def_dynamic | |
2250 | && !h->def_regular) | |
ebe50bae | 2251 | || (htab->elf.dynamic_sections_created |
0c715baa AM |
2252 | && (h->root.type == bfd_link_hash_undefweak |
2253 | || h->root.type == bfd_link_hash_undefined)))) | |
2254 | { | |
2255 | /* Make sure this symbol is output as a dynamic symbol. | |
2256 | Undefined weak syms won't yet be marked as dynamic. */ | |
2257 | if (h->dynindx == -1 | |
f5385ebf | 2258 | && !h->forced_local) |
0c715baa | 2259 | { |
c152c796 | 2260 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2261 | return FALSE; |
0c715baa | 2262 | } |
5a15f56f | 2263 | |
0c715baa AM |
2264 | /* If that succeeded, we know we'll be keeping all the |
2265 | relocs. */ | |
2266 | if (h->dynindx != -1) | |
2267 | goto keep; | |
2268 | } | |
2269 | ||
2270 | eh->dyn_relocs = NULL; | |
2271 | ||
ec338859 | 2272 | keep: ; |
5a15f56f AM |
2273 | } |
2274 | ||
0c715baa AM |
2275 | /* Finally, allocate space. */ |
2276 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
12d0ee4a | 2277 | { |
e7c33416 NC |
2278 | asection *sreloc; |
2279 | ||
cbe950e9 | 2280 | sreloc = elf_section_data (p->sec)->sreloc; |
e7c33416 NC |
2281 | |
2282 | BFD_ASSERT (sreloc != NULL); | |
eea6121a | 2283 | sreloc->size += p->count * sizeof (Elf32_External_Rel); |
12d0ee4a AM |
2284 | } |
2285 | ||
b34976b6 | 2286 | return TRUE; |
6725bdbf AM |
2287 | } |
2288 | ||
c25bc9fc L |
2289 | /* Allocate space in .plt, .got and associated reloc sections for |
2290 | local dynamic relocs. */ | |
2291 | ||
2292 | static bfd_boolean | |
2293 | elf_i386_allocate_local_dynrelocs (void **slot, void *inf) | |
2294 | { | |
2295 | struct elf_link_hash_entry *h | |
2296 | = (struct elf_link_hash_entry *) *slot; | |
2297 | ||
2298 | if (h->type != STT_GNU_IFUNC | |
2299 | || !h->def_regular | |
2300 | || !h->ref_regular | |
2301 | || !h->forced_local | |
2302 | || h->root.type != bfd_link_hash_defined) | |
2303 | abort (); | |
2304 | ||
2305 | return elf_i386_allocate_dynrelocs (h, inf); | |
2306 | } | |
2307 | ||
0c715baa AM |
2308 | /* Find any dynamic relocs that apply to read-only sections. */ |
2309 | ||
b34976b6 | 2310 | static bfd_boolean |
eb4ff4d6 | 2311 | elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
0c715baa AM |
2312 | { |
2313 | struct elf_i386_link_hash_entry *eh; | |
e03a8ed8 | 2314 | struct elf_dyn_relocs *p; |
0c715baa | 2315 | |
e92d460e AM |
2316 | if (h->root.type == bfd_link_hash_warning) |
2317 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2318 | ||
0c715baa AM |
2319 | eh = (struct elf_i386_link_hash_entry *) h; |
2320 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2321 | { | |
2322 | asection *s = p->sec->output_section; | |
2323 | ||
2324 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2325 | { | |
2326 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2327 | ||
2328 | info->flags |= DF_TEXTREL; | |
2329 | ||
2330 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 2331 | return FALSE; |
0c715baa AM |
2332 | } |
2333 | } | |
b34976b6 | 2334 | return TRUE; |
0c715baa AM |
2335 | } |
2336 | ||
252b5132 RH |
2337 | /* Set the sizes of the dynamic sections. */ |
2338 | ||
b34976b6 | 2339 | static bfd_boolean |
55fd94b0 AM |
2340 | elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
2341 | struct bfd_link_info *info) | |
252b5132 | 2342 | { |
6725bdbf | 2343 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2344 | bfd *dynobj; |
2345 | asection *s; | |
b34976b6 | 2346 | bfd_boolean relocs; |
0c715baa | 2347 | bfd *ibfd; |
252b5132 | 2348 | |
6725bdbf | 2349 | htab = elf_i386_hash_table (info); |
ebe50bae | 2350 | dynobj = htab->elf.dynobj; |
ffb2e45b AM |
2351 | if (dynobj == NULL) |
2352 | abort (); | |
252b5132 | 2353 | |
ebe50bae | 2354 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2355 | { |
2356 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 2357 | if (info->executable) |
252b5132 RH |
2358 | { |
2359 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
ffb2e45b AM |
2360 | if (s == NULL) |
2361 | abort (); | |
eea6121a | 2362 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
2363 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2364 | } | |
161d71a6 | 2365 | } |
6725bdbf | 2366 | |
0c715baa AM |
2367 | /* Set up .got offsets for local syms, and space for local dynamic |
2368 | relocs. */ | |
2369 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
161d71a6 L |
2370 | { |
2371 | bfd_signed_vma *local_got; | |
2372 | bfd_signed_vma *end_local_got; | |
13ae64f3 | 2373 | char *local_tls_type; |
67a4f2b7 | 2374 | bfd_vma *local_tlsdesc_gotent; |
161d71a6 L |
2375 | bfd_size_type locsymcount; |
2376 | Elf_Internal_Shdr *symtab_hdr; | |
2377 | asection *srel; | |
6725bdbf | 2378 | |
0ffa91dd | 2379 | if (! is_i386_elf (ibfd)) |
161d71a6 | 2380 | continue; |
6725bdbf | 2381 | |
0c715baa AM |
2382 | for (s = ibfd->sections; s != NULL; s = s->next) |
2383 | { | |
e03a8ed8 | 2384 | struct elf_dyn_relocs *p; |
0c715baa | 2385 | |
e03a8ed8 | 2386 | for (p = ((struct elf_dyn_relocs *) |
e81d3500 | 2387 | elf_section_data (s)->local_dynrel); |
ec338859 AM |
2388 | p != NULL; |
2389 | p = p->next) | |
0c715baa | 2390 | { |
ec338859 AM |
2391 | if (!bfd_is_abs_section (p->sec) |
2392 | && bfd_is_abs_section (p->sec->output_section)) | |
2393 | { | |
2394 | /* Input section has been discarded, either because | |
2395 | it is a copy of a linkonce section or due to | |
2396 | linker script /DISCARD/, so we'll be discarding | |
2397 | the relocs too. */ | |
2398 | } | |
3348747a NS |
2399 | else if (htab->is_vxworks |
2400 | && strcmp (p->sec->output_section->name, | |
2401 | ".tls_vars") == 0) | |
2402 | { | |
2403 | /* Relocations in vxworks .tls_vars sections are | |
2404 | handled specially by the loader. */ | |
2405 | } | |
248866a8 | 2406 | else if (p->count != 0) |
ec338859 AM |
2407 | { |
2408 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 2409 | srel->size += p->count * sizeof (Elf32_External_Rel); |
248866a8 AM |
2410 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
2411 | info->flags |= DF_TEXTREL; | |
ec338859 | 2412 | } |
0c715baa AM |
2413 | } |
2414 | } | |
2415 | ||
2416 | local_got = elf_local_got_refcounts (ibfd); | |
161d71a6 L |
2417 | if (!local_got) |
2418 | continue; | |
6725bdbf | 2419 | |
0ffa91dd | 2420 | symtab_hdr = &elf_symtab_hdr (ibfd); |
161d71a6 L |
2421 | locsymcount = symtab_hdr->sh_info; |
2422 | end_local_got = local_got + locsymcount; | |
13ae64f3 | 2423 | local_tls_type = elf_i386_local_got_tls_type (ibfd); |
67a4f2b7 | 2424 | local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd); |
6de2ae4a L |
2425 | s = htab->elf.sgot; |
2426 | srel = htab->elf.srelgot; | |
67a4f2b7 AO |
2427 | for (; local_got < end_local_got; |
2428 | ++local_got, ++local_tls_type, ++local_tlsdesc_gotent) | |
161d71a6 | 2429 | { |
67a4f2b7 | 2430 | *local_tlsdesc_gotent = (bfd_vma) -1; |
161d71a6 | 2431 | if (*local_got > 0) |
6725bdbf | 2432 | { |
67a4f2b7 AO |
2433 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
2434 | { | |
6de2ae4a | 2435 | *local_tlsdesc_gotent = htab->elf.sgotplt->size |
67a4f2b7 | 2436 | - elf_i386_compute_jump_table_size (htab); |
6de2ae4a | 2437 | htab->elf.sgotplt->size += 8; |
67a4f2b7 AO |
2438 | *local_got = (bfd_vma) -2; |
2439 | } | |
2440 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2441 | || GOT_TLS_GD_P (*local_tls_type)) | |
2442 | { | |
2443 | *local_got = s->size; | |
2444 | s->size += 4; | |
2445 | if (GOT_TLS_GD_P (*local_tls_type) | |
2446 | || *local_tls_type == GOT_TLS_IE_BOTH) | |
2447 | s->size += 4; | |
2448 | } | |
13ae64f3 | 2449 | if (info->shared |
67a4f2b7 | 2450 | || GOT_TLS_GD_ANY_P (*local_tls_type) |
37e55690 JJ |
2451 | || (*local_tls_type & GOT_TLS_IE)) |
2452 | { | |
2453 | if (*local_tls_type == GOT_TLS_IE_BOTH) | |
eea6121a | 2454 | srel->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2455 | else if (GOT_TLS_GD_P (*local_tls_type) |
2456 | || ! GOT_TLS_GDESC_P (*local_tls_type)) | |
eea6121a | 2457 | srel->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2458 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
6de2ae4a | 2459 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
37e55690 | 2460 | } |
6725bdbf | 2461 | } |
161d71a6 L |
2462 | else |
2463 | *local_got = (bfd_vma) -1; | |
6725bdbf | 2464 | } |
252b5132 | 2465 | } |
6725bdbf | 2466 | |
13ae64f3 JJ |
2467 | if (htab->tls_ldm_got.refcount > 0) |
2468 | { | |
2469 | /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM | |
2470 | relocs. */ | |
6de2ae4a L |
2471 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
2472 | htab->elf.sgot->size += 8; | |
2473 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2474 | } |
2475 | else | |
2476 | htab->tls_ldm_got.offset = -1; | |
2477 | ||
0c715baa AM |
2478 | /* Allocate global sym .plt and .got entries, and space for global |
2479 | sym dynamic relocs. */ | |
eb4ff4d6 | 2480 | elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info); |
252b5132 | 2481 | |
c25bc9fc L |
2482 | /* Allocate .plt and .got entries, and space for local symbols. */ |
2483 | htab_traverse (htab->loc_hash_table, | |
2484 | elf_i386_allocate_local_dynrelocs, | |
2485 | info); | |
2486 | ||
67a4f2b7 AO |
2487 | /* For every jump slot reserved in the sgotplt, reloc_count is |
2488 | incremented. However, when we reserve space for TLS descriptors, | |
2489 | it's not incremented, so in order to compute the space reserved | |
2490 | for them, it suffices to multiply the reloc count by the jump | |
2491 | slot size. */ | |
6de2ae4a | 2492 | if (htab->elf.srelplt) |
5ae0bfb6 | 2493 | htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4; |
67a4f2b7 | 2494 | |
5a15f56f AM |
2495 | /* We now have determined the sizes of the various dynamic sections. |
2496 | Allocate memory for them. */ | |
b34976b6 | 2497 | relocs = FALSE; |
252b5132 RH |
2498 | for (s = dynobj->sections; s != NULL; s = s->next) |
2499 | { | |
eac338cf PB |
2500 | bfd_boolean strip_section = TRUE; |
2501 | ||
252b5132 RH |
2502 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
2503 | continue; | |
2504 | ||
6de2ae4a L |
2505 | if (s == htab->elf.splt |
2506 | || s == htab->elf.sgot | |
2507 | || s == htab->elf.sgotplt | |
2508 | || s == htab->elf.iplt | |
2509 | || s == htab->elf.igotplt | |
75ff4589 | 2510 | || s == htab->sdynbss) |
252b5132 | 2511 | { |
6725bdbf AM |
2512 | /* Strip this section if we don't need it; see the |
2513 | comment below. */ | |
eac338cf PB |
2514 | /* We'd like to strip these sections if they aren't needed, but if |
2515 | we've exported dynamic symbols from them we must leave them. | |
2516 | It's too late to tell BFD to get rid of the symbols. */ | |
2517 | ||
7325306f | 2518 | if (htab->elf.hplt != NULL) |
eac338cf | 2519 | strip_section = FALSE; |
252b5132 | 2520 | } |
0112cd26 | 2521 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel")) |
252b5132 | 2522 | { |
6de2ae4a L |
2523 | if (s->size != 0 |
2524 | && s != htab->elf.srelplt | |
2525 | && s != htab->srelplt2) | |
b34976b6 | 2526 | relocs = TRUE; |
252b5132 | 2527 | |
0ac8d2ca AM |
2528 | /* We use the reloc_count field as a counter if we need |
2529 | to copy relocs into the output file. */ | |
5ae0bfb6 | 2530 | s->reloc_count = 0; |
252b5132 | 2531 | } |
6725bdbf | 2532 | else |
252b5132 RH |
2533 | { |
2534 | /* It's not one of our sections, so don't allocate space. */ | |
2535 | continue; | |
2536 | } | |
2537 | ||
c456f082 | 2538 | if (s->size == 0) |
252b5132 | 2539 | { |
0ac8d2ca AM |
2540 | /* If we don't need this section, strip it from the |
2541 | output file. This is mostly to handle .rel.bss and | |
2542 | .rel.plt. We must create both sections in | |
2543 | create_dynamic_sections, because they must be created | |
2544 | before the linker maps input sections to output | |
2545 | sections. The linker does that before | |
2546 | adjust_dynamic_symbol is called, and it is that | |
2547 | function which decides whether anything needs to go | |
2548 | into these sections. */ | |
c456f082 AM |
2549 | if (strip_section) |
2550 | s->flags |= SEC_EXCLUDE; | |
252b5132 RH |
2551 | continue; |
2552 | } | |
2553 | ||
c456f082 AM |
2554 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2555 | continue; | |
2556 | ||
f69da49f AM |
2557 | /* Allocate memory for the section contents. We use bfd_zalloc |
2558 | here in case unused entries are not reclaimed before the | |
2559 | section's contents are written out. This should not happen, | |
2560 | but this way if it does, we get a R_386_NONE reloc instead | |
2561 | of garbage. */ | |
eea6121a | 2562 | s->contents = bfd_zalloc (dynobj, s->size); |
6725bdbf | 2563 | if (s->contents == NULL) |
b34976b6 | 2564 | return FALSE; |
252b5132 RH |
2565 | } |
2566 | ||
ebe50bae | 2567 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2568 | { |
2569 | /* Add some entries to the .dynamic section. We fill in the | |
2570 | values later, in elf_i386_finish_dynamic_sections, but we | |
2571 | must add the entries now so that we get the correct size for | |
2572 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2573 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2574 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2575 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2576 | |
36af4a4e | 2577 | if (info->executable) |
252b5132 | 2578 | { |
dc810e39 | 2579 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2580 | return FALSE; |
252b5132 RH |
2581 | } |
2582 | ||
6de2ae4a | 2583 | if (htab->elf.splt->size != 0) |
252b5132 | 2584 | { |
dc810e39 AM |
2585 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2586 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2587 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
2588 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2589 | return FALSE; |
252b5132 RH |
2590 | } |
2591 | ||
2592 | if (relocs) | |
2593 | { | |
dc810e39 AM |
2594 | if (!add_dynamic_entry (DT_REL, 0) |
2595 | || !add_dynamic_entry (DT_RELSZ, 0) | |
2596 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 2597 | return FALSE; |
252b5132 | 2598 | |
0c715baa AM |
2599 | /* If any dynamic relocs apply to a read-only section, |
2600 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 2601 | if ((info->flags & DF_TEXTREL) == 0) |
eb4ff4d6 L |
2602 | elf_link_hash_traverse (&htab->elf, |
2603 | elf_i386_readonly_dynrelocs, info); | |
0c715baa AM |
2604 | |
2605 | if ((info->flags & DF_TEXTREL) != 0) | |
2606 | { | |
2607 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2608 | return FALSE; |
0c715baa | 2609 | } |
252b5132 | 2610 | } |
7a2b07ff NS |
2611 | if (htab->is_vxworks |
2612 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
2613 | return FALSE; | |
252b5132 | 2614 | } |
dc810e39 | 2615 | #undef add_dynamic_entry |
252b5132 | 2616 | |
b34976b6 | 2617 | return TRUE; |
252b5132 RH |
2618 | } |
2619 | ||
67a4f2b7 AO |
2620 | static bfd_boolean |
2621 | elf_i386_always_size_sections (bfd *output_bfd, | |
2622 | struct bfd_link_info *info) | |
2623 | { | |
2624 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
2625 | ||
2626 | if (tls_sec) | |
2627 | { | |
2628 | struct elf_link_hash_entry *tlsbase; | |
2629 | ||
2630 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
2631 | "_TLS_MODULE_BASE_", | |
2632 | FALSE, FALSE, FALSE); | |
2633 | ||
2634 | if (tlsbase && tlsbase->type == STT_TLS) | |
2635 | { | |
2636 | struct bfd_link_hash_entry *bh = NULL; | |
2637 | const struct elf_backend_data *bed | |
2638 | = get_elf_backend_data (output_bfd); | |
2639 | ||
2640 | if (!(_bfd_generic_link_add_one_symbol | |
2641 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
2642 | tls_sec, 0, NULL, FALSE, | |
2643 | bed->collect, &bh))) | |
2644 | return FALSE; | |
9f03412a AO |
2645 | |
2646 | elf_i386_hash_table (info)->tls_module_base = bh; | |
2647 | ||
67a4f2b7 AO |
2648 | tlsbase = (struct elf_link_hash_entry *)bh; |
2649 | tlsbase->def_regular = 1; | |
2650 | tlsbase->other = STV_HIDDEN; | |
2651 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
2652 | } | |
2653 | } | |
2654 | ||
2655 | return TRUE; | |
2656 | } | |
2657 | ||
38701953 AM |
2658 | /* Set the correct type for an x86 ELF section. We do this by the |
2659 | section name, which is a hack, but ought to work. */ | |
2660 | ||
b34976b6 | 2661 | static bfd_boolean |
55fd94b0 AM |
2662 | elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
2663 | Elf_Internal_Shdr *hdr, | |
2664 | asection *sec) | |
38701953 AM |
2665 | { |
2666 | register const char *name; | |
2667 | ||
2668 | name = bfd_get_section_name (abfd, sec); | |
2669 | ||
2670 | /* This is an ugly, but unfortunately necessary hack that is | |
2671 | needed when producing EFI binaries on x86. It tells | |
2672 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
2673 | containing ELF relocation info. We need this hack in order to | |
2674 | be able to generate ELF binaries that can be translated into | |
2675 | EFI applications (which are essentially COFF objects). Those | |
2676 | files contain a COFF ".reloc" section inside an ELFNN object, | |
2677 | which would normally cause BFD to segfault because it would | |
2678 | attempt to interpret this section as containing relocation | |
2679 | entries for section "oc". With this hack enabled, ".reloc" | |
2680 | will be treated as a normal data section, which will avoid the | |
2681 | segfault. However, you won't be able to create an ELFNN binary | |
2682 | with a section named "oc" that needs relocations, but that's | |
2683 | the kind of ugly side-effects you get when detecting section | |
2684 | types based on their names... In practice, this limitation is | |
2685 | unlikely to bite. */ | |
2686 | if (strcmp (name, ".reloc") == 0) | |
2687 | hdr->sh_type = SHT_PROGBITS; | |
2688 | ||
b34976b6 | 2689 | return TRUE; |
38701953 AM |
2690 | } |
2691 | ||
9f03412a AO |
2692 | /* _TLS_MODULE_BASE_ needs to be treated especially when linking |
2693 | executables. Rather than setting it to the beginning of the TLS | |
2694 | section, we have to set it to the end. This function may be called | |
2695 | multiple times, it is idempotent. */ | |
2696 | ||
2697 | static void | |
eb4ff4d6 | 2698 | elf_i386_set_tls_module_base (struct bfd_link_info *info) |
9f03412a AO |
2699 | { |
2700 | struct bfd_link_hash_entry *base; | |
2701 | ||
2702 | if (!info->executable) | |
2703 | return; | |
2704 | ||
2705 | base = elf_i386_hash_table (info)->tls_module_base; | |
2706 | ||
2707 | if (!base) | |
2708 | return; | |
2709 | ||
2710 | base->u.def.value = elf_hash_table (info)->tls_size; | |
2711 | } | |
2712 | ||
13ae64f3 JJ |
2713 | /* Return the base VMA address which should be subtracted from real addresses |
2714 | when resolving @dtpoff relocation. | |
2715 | This is PT_TLS segment p_vaddr. */ | |
2716 | ||
2717 | static bfd_vma | |
eb4ff4d6 | 2718 | elf_i386_dtpoff_base (struct bfd_link_info *info) |
13ae64f3 | 2719 | { |
e1918d23 AM |
2720 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2721 | if (elf_hash_table (info)->tls_sec == NULL) | |
6a30718d | 2722 | return 0; |
e1918d23 | 2723 | return elf_hash_table (info)->tls_sec->vma; |
13ae64f3 JJ |
2724 | } |
2725 | ||
2726 | /* Return the relocation value for @tpoff relocation | |
2727 | if STT_TLS virtual address is ADDRESS. */ | |
2728 | ||
2729 | static bfd_vma | |
eb4ff4d6 | 2730 | elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address) |
13ae64f3 | 2731 | { |
e1918d23 | 2732 | struct elf_link_hash_table *htab = elf_hash_table (info); |
13ae64f3 | 2733 | |
e1918d23 AM |
2734 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2735 | if (htab->tls_sec == NULL) | |
6a30718d | 2736 | return 0; |
e1918d23 | 2737 | return htab->tls_size + htab->tls_sec->vma - address; |
13ae64f3 JJ |
2738 | } |
2739 | ||
252b5132 RH |
2740 | /* Relocate an i386 ELF section. */ |
2741 | ||
b34976b6 | 2742 | static bfd_boolean |
55fd94b0 AM |
2743 | elf_i386_relocate_section (bfd *output_bfd, |
2744 | struct bfd_link_info *info, | |
2745 | bfd *input_bfd, | |
2746 | asection *input_section, | |
2747 | bfd_byte *contents, | |
2748 | Elf_Internal_Rela *relocs, | |
2749 | Elf_Internal_Sym *local_syms, | |
2750 | asection **local_sections) | |
252b5132 | 2751 | { |
6725bdbf | 2752 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2753 | Elf_Internal_Shdr *symtab_hdr; |
2754 | struct elf_link_hash_entry **sym_hashes; | |
2755 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 2756 | bfd_vma *local_tlsdesc_gotents; |
252b5132 RH |
2757 | Elf_Internal_Rela *rel; |
2758 | Elf_Internal_Rela *relend; | |
3348747a | 2759 | bfd_boolean is_vxworks_tls; |
252b5132 | 2760 | |
0ffa91dd NC |
2761 | BFD_ASSERT (is_i386_elf (input_bfd)); |
2762 | ||
6725bdbf | 2763 | htab = elf_i386_hash_table (info); |
0ffa91dd | 2764 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
252b5132 RH |
2765 | sym_hashes = elf_sym_hashes (input_bfd); |
2766 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
67a4f2b7 | 2767 | local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd); |
3348747a NS |
2768 | /* We have to handle relocations in vxworks .tls_vars sections |
2769 | specially, because the dynamic loader is 'weird'. */ | |
2770 | is_vxworks_tls = (htab->is_vxworks && info->shared | |
2771 | && !strcmp (input_section->output_section->name, | |
2772 | ".tls_vars")); | |
252b5132 | 2773 | |
eb4ff4d6 | 2774 | elf_i386_set_tls_module_base (info); |
9f03412a | 2775 | |
252b5132 RH |
2776 | rel = relocs; |
2777 | relend = relocs + input_section->reloc_count; | |
2778 | for (; rel < relend; rel++) | |
2779 | { | |
13ae64f3 | 2780 | unsigned int r_type; |
252b5132 RH |
2781 | reloc_howto_type *howto; |
2782 | unsigned long r_symndx; | |
2783 | struct elf_link_hash_entry *h; | |
2784 | Elf_Internal_Sym *sym; | |
2785 | asection *sec; | |
67a4f2b7 | 2786 | bfd_vma off, offplt; |
252b5132 | 2787 | bfd_vma relocation; |
b34976b6 | 2788 | bfd_boolean unresolved_reloc; |
252b5132 | 2789 | bfd_reloc_status_type r; |
1b452ec6 | 2790 | unsigned int indx; |
13ae64f3 | 2791 | int tls_type; |
252b5132 RH |
2792 | |
2793 | r_type = ELF32_R_TYPE (rel->r_info); | |
55fd94b0 AM |
2794 | if (r_type == R_386_GNU_VTINHERIT |
2795 | || r_type == R_386_GNU_VTENTRY) | |
252b5132 | 2796 | continue; |
dc47f327 | 2797 | |
55fd94b0 | 2798 | if ((indx = r_type) >= R_386_standard |
13ae64f3 JJ |
2799 | && ((indx = r_type - R_386_ext_offset) - R_386_standard |
2800 | >= R_386_ext - R_386_standard) | |
2801 | && ((indx = r_type - R_386_tls_offset) - R_386_ext | |
cbe950e9 | 2802 | >= R_386_irelative - R_386_ext)) |
252b5132 | 2803 | { |
6ba842b6 | 2804 | (*_bfd_error_handler) |
d003868e AM |
2805 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), |
2806 | input_bfd, input_section, r_type); | |
252b5132 | 2807 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 2808 | return FALSE; |
252b5132 | 2809 | } |
1b452ec6 | 2810 | howto = elf_howto_table + indx; |
252b5132 RH |
2811 | |
2812 | r_symndx = ELF32_R_SYM (rel->r_info); | |
252b5132 RH |
2813 | h = NULL; |
2814 | sym = NULL; | |
2815 | sec = NULL; | |
b34976b6 | 2816 | unresolved_reloc = FALSE; |
252b5132 RH |
2817 | if (r_symndx < symtab_hdr->sh_info) |
2818 | { | |
2819 | sym = local_syms + r_symndx; | |
2820 | sec = local_sections[r_symndx]; | |
2821 | relocation = (sec->output_section->vma | |
2822 | + sec->output_offset | |
2823 | + sym->st_value); | |
ab96bf03 AM |
2824 | |
2825 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
2826 | && ((sec->flags & SEC_MERGE) != 0 | |
2827 | || (info->relocatable | |
2828 | && sec->output_offset != 0))) | |
f8df10f4 | 2829 | { |
f8df10f4 | 2830 | bfd_vma addend; |
4a335f3d | 2831 | bfd_byte *where = contents + rel->r_offset; |
f8df10f4 | 2832 | |
4a335f3d | 2833 | switch (howto->size) |
f8df10f4 | 2834 | { |
4a335f3d AM |
2835 | case 0: |
2836 | addend = bfd_get_8 (input_bfd, where); | |
2837 | if (howto->pc_relative) | |
2838 | { | |
2839 | addend = (addend ^ 0x80) - 0x80; | |
2840 | addend += 1; | |
2841 | } | |
2842 | break; | |
2843 | case 1: | |
2844 | addend = bfd_get_16 (input_bfd, where); | |
2845 | if (howto->pc_relative) | |
2846 | { | |
2847 | addend = (addend ^ 0x8000) - 0x8000; | |
2848 | addend += 2; | |
2849 | } | |
2850 | break; | |
2851 | case 2: | |
2852 | addend = bfd_get_32 (input_bfd, where); | |
2853 | if (howto->pc_relative) | |
2854 | { | |
2855 | addend = (addend ^ 0x80000000) - 0x80000000; | |
2856 | addend += 4; | |
2857 | } | |
2858 | break; | |
2859 | default: | |
2860 | abort (); | |
f8df10f4 JJ |
2861 | } |
2862 | ||
ab96bf03 AM |
2863 | if (info->relocatable) |
2864 | addend += sec->output_offset; | |
2865 | else | |
2866 | { | |
2867 | asection *msec = sec; | |
2868 | addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, | |
2869 | addend); | |
2870 | addend -= relocation; | |
2871 | addend += msec->output_section->vma + msec->output_offset; | |
2872 | } | |
4a335f3d AM |
2873 | |
2874 | switch (howto->size) | |
2875 | { | |
2876 | case 0: | |
16a10388 | 2877 | /* FIXME: overflow checks. */ |
4a335f3d AM |
2878 | if (howto->pc_relative) |
2879 | addend -= 1; | |
2880 | bfd_put_8 (input_bfd, addend, where); | |
4a335f3d AM |
2881 | break; |
2882 | case 1: | |
2883 | if (howto->pc_relative) | |
2884 | addend -= 2; | |
2885 | bfd_put_16 (input_bfd, addend, where); | |
4a335f3d AM |
2886 | break; |
2887 | case 2: | |
2888 | if (howto->pc_relative) | |
2889 | addend -= 4; | |
2890 | bfd_put_32 (input_bfd, addend, where); | |
2891 | break; | |
2892 | } | |
f8df10f4 | 2893 | } |
c25bc9fc L |
2894 | else if (ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
2895 | { | |
2896 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
2897 | h = elf_i386_get_local_sym_hash (htab, input_bfd, | |
2898 | rel, FALSE); | |
2899 | if (h == NULL) | |
2900 | abort (); | |
2901 | ||
2902 | /* Set STT_GNU_IFUNC symbol value. */ | |
2903 | h->root.u.def.value = sym->st_value; | |
2904 | h->root.u.def.section = sec; | |
2905 | } | |
252b5132 RH |
2906 | } |
2907 | else | |
2908 | { | |
560e09e9 | 2909 | bfd_boolean warned; |
ffb2e45b | 2910 | |
b2a8e766 AM |
2911 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2912 | r_symndx, symtab_hdr, sym_hashes, | |
2913 | h, sec, relocation, | |
2914 | unresolved_reloc, warned); | |
252b5132 RH |
2915 | } |
2916 | ||
ab96bf03 | 2917 | if (sec != NULL && elf_discarded_section (sec)) |
9635fe29 | 2918 | { |
ab96bf03 AM |
2919 | /* For relocs against symbols from removed linkonce sections, |
2920 | or sections discarded by a linker script, we just want the | |
2921 | section contents zeroed. Avoid any special processing. */ | |
b1e24c02 | 2922 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); |
ab96bf03 AM |
2923 | rel->r_info = 0; |
2924 | rel->r_addend = 0; | |
b1e24c02 | 2925 | continue; |
9635fe29 AM |
2926 | } |
2927 | ||
ab96bf03 AM |
2928 | if (info->relocatable) |
2929 | continue; | |
2930 | ||
cbe950e9 L |
2931 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
2932 | it here if it is defined in a non-shared object. */ | |
2933 | if (h != NULL | |
2934 | && h->type == STT_GNU_IFUNC | |
2935 | && h->def_regular) | |
2936 | { | |
2937 | asection *plt, *gotplt, *base_got; | |
2938 | bfd_vma plt_index; | |
4c544807 | 2939 | const char *name; |
cbe950e9 L |
2940 | |
2941 | if ((input_section->flags & SEC_ALLOC) == 0 | |
2942 | || h->plt.offset == (bfd_vma) -1) | |
2943 | abort (); | |
2944 | ||
2945 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
6de2ae4a | 2946 | if (htab->elf.splt != NULL) |
cbe950e9 | 2947 | { |
6de2ae4a L |
2948 | plt = htab->elf.splt; |
2949 | gotplt = htab->elf.sgotplt; | |
cbe950e9 L |
2950 | } |
2951 | else | |
2952 | { | |
6de2ae4a L |
2953 | plt = htab->elf.iplt; |
2954 | gotplt = htab->elf.igotplt; | |
cbe950e9 L |
2955 | } |
2956 | ||
2957 | relocation = (plt->output_section->vma | |
2958 | + plt->output_offset + h->plt.offset); | |
2959 | ||
2960 | switch (r_type) | |
2961 | { | |
2962 | default: | |
4c544807 L |
2963 | if (h->root.root.string) |
2964 | name = h->root.root.string; | |
2965 | else | |
2966 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
2967 | NULL); | |
cbe950e9 L |
2968 | (*_bfd_error_handler) |
2969 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
2970 | "symbol `%s' isn't handled by %s"), input_bfd, | |
2971 | elf_howto_table[r_type].name, | |
4c544807 | 2972 | name, __FUNCTION__); |
cbe950e9 L |
2973 | bfd_set_error (bfd_error_bad_value); |
2974 | return FALSE; | |
2975 | ||
2976 | case R_386_32: | |
710ab287 L |
2977 | /* Generate dynamic relcoation only when there is a |
2978 | non-GOF reference in a shared object. */ | |
2979 | if (info->shared && h->non_got_ref) | |
2980 | { | |
2981 | Elf_Internal_Rela outrel; | |
2982 | bfd_byte *loc; | |
2983 | asection *sreloc; | |
2984 | bfd_vma offset; | |
2985 | ||
c25bc9fc L |
2986 | /* Need a dynamic relocation to get the real function |
2987 | adddress. */ | |
710ab287 L |
2988 | offset = _bfd_elf_section_offset (output_bfd, |
2989 | info, | |
2990 | input_section, | |
2991 | rel->r_offset); | |
2992 | if (offset == (bfd_vma) -1 | |
2993 | || offset == (bfd_vma) -2) | |
2994 | abort (); | |
2995 | ||
2996 | outrel.r_offset = (input_section->output_section->vma | |
2997 | + input_section->output_offset | |
2998 | + offset); | |
2999 | ||
3000 | if (h->dynindx == -1 | |
44c4ea11 L |
3001 | || h->forced_local |
3002 | || info->executable) | |
710ab287 L |
3003 | { |
3004 | /* This symbol is resolved locally. */ | |
3005 | outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE); | |
3006 | bfd_put_32 (output_bfd, | |
3007 | (h->root.u.def.value | |
3008 | + h->root.u.def.section->output_section->vma | |
3009 | + h->root.u.def.section->output_offset), | |
3010 | contents + offset); | |
3011 | } | |
3012 | else | |
3013 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
3014 | ||
6de2ae4a | 3015 | sreloc = htab->elf.irelifunc; |
710ab287 L |
3016 | loc = sreloc->contents; |
3017 | loc += (sreloc->reloc_count++ | |
3018 | * sizeof (Elf32_External_Rel)); | |
3019 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
3020 | ||
3021 | /* If this reloc is against an external symbol, we | |
3022 | do not want to fiddle with the addend. Otherwise, | |
3023 | we need to include the symbol value so that it | |
3024 | becomes an addend for the dynamic reloc. For an | |
3025 | internal symbol, we have updated addend. */ | |
3026 | continue; | |
3027 | } | |
3028 | ||
cbe950e9 L |
3029 | case R_386_PC32: |
3030 | case R_386_PLT32: | |
3031 | goto do_relocation; | |
3032 | ||
3033 | case R_386_GOT32: | |
6de2ae4a | 3034 | base_got = htab->elf.sgot; |
cbe950e9 L |
3035 | off = h->got.offset; |
3036 | ||
7afd84dc | 3037 | if (base_got == NULL) |
cbe950e9 L |
3038 | abort (); |
3039 | ||
7afd84dc | 3040 | if (off == (bfd_vma) -1) |
cbe950e9 | 3041 | { |
7afd84dc L |
3042 | /* We can't use h->got.offset here to save state, or |
3043 | even just remember the offset, as finish_dynamic_symbol | |
3044 | would use that as offset into .got. */ | |
3045 | ||
6de2ae4a | 3046 | if (htab->elf.splt != NULL) |
7afd84dc L |
3047 | { |
3048 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3049 | off = (plt_index + 3) * 4; | |
6de2ae4a | 3050 | base_got = htab->elf.sgotplt; |
7afd84dc | 3051 | } |
cbe950e9 L |
3052 | else |
3053 | { | |
7afd84dc L |
3054 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; |
3055 | off = plt_index * 4; | |
6de2ae4a | 3056 | base_got = htab->elf.igotplt; |
7afd84dc L |
3057 | } |
3058 | ||
3059 | if (h->dynindx == -1 | |
3060 | || h->forced_local | |
3061 | || info->symbolic) | |
3062 | { | |
3063 | /* This references the local defitionion. We must | |
3064 | initialize this entry in the global offset table. | |
3065 | Since the offset must always be a multiple of 8, | |
3066 | we use the least significant bit to record | |
3067 | whether we have initialized it already. | |
3068 | ||
3069 | When doing a dynamic link, we create a .rela.got | |
3070 | relocation entry to initialize the value. This | |
3071 | is done in the finish_dynamic_symbol routine. */ | |
3072 | if ((off & 1) != 0) | |
3073 | off &= ~1; | |
3074 | else | |
3075 | { | |
3076 | bfd_put_32 (output_bfd, relocation, | |
3077 | base_got->contents + off); | |
3078 | h->got.offset |= 1; | |
3079 | } | |
cbe950e9 | 3080 | } |
cbe950e9 | 3081 | |
7afd84dc | 3082 | relocation = off; |
cbe950e9 | 3083 | |
7afd84dc | 3084 | /* Adjust for static executables. */ |
6de2ae4a | 3085 | if (htab->elf.splt == NULL) |
7afd84dc L |
3086 | relocation += gotplt->output_offset; |
3087 | } | |
3088 | else | |
0018b0a3 L |
3089 | { |
3090 | relocation = (base_got->output_section->vma | |
3091 | + base_got->output_offset + off | |
3092 | - gotplt->output_section->vma | |
3093 | - gotplt->output_offset); | |
3094 | /* Adjust for static executables. */ | |
6de2ae4a | 3095 | if (htab->elf.splt == NULL) |
0018b0a3 L |
3096 | relocation += gotplt->output_offset; |
3097 | } | |
3098 | ||
cbe950e9 L |
3099 | goto do_relocation; |
3100 | ||
3101 | case R_386_GOTOFF: | |
3102 | relocation -= (gotplt->output_section->vma | |
3103 | + gotplt->output_offset); | |
3104 | goto do_relocation; | |
3105 | } | |
3106 | } | |
3107 | ||
252b5132 RH |
3108 | switch (r_type) |
3109 | { | |
3110 | case R_386_GOT32: | |
3111 | /* Relocation is to the entry for this symbol in the global | |
3112 | offset table. */ | |
6de2ae4a | 3113 | if (htab->elf.sgot == NULL) |
ffb2e45b | 3114 | abort (); |
252b5132 RH |
3115 | |
3116 | if (h != NULL) | |
3117 | { | |
b34976b6 | 3118 | bfd_boolean dyn; |
252b5132 RH |
3119 | |
3120 | off = h->got.offset; | |
ebe50bae | 3121 | dyn = htab->elf.dynamic_sections_created; |
26e41594 | 3122 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
252b5132 | 3123 | || (info->shared |
586119b3 | 3124 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
ef5aade5 L |
3125 | || (ELF_ST_VISIBILITY (h->other) |
3126 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
3127 | { |
3128 | /* This is actually a static link, or it is a | |
3129 | -Bsymbolic link and the symbol is defined | |
3130 | locally, or the symbol was forced to be local | |
3131 | because of a version file. We must initialize | |
3132 | this entry in the global offset table. Since the | |
3133 | offset must always be a multiple of 4, we use the | |
3134 | least significant bit to record whether we have | |
3135 | initialized it already. | |
3136 | ||
3137 | When doing a dynamic link, we create a .rel.got | |
3138 | relocation entry to initialize the value. This | |
3139 | is done in the finish_dynamic_symbol routine. */ | |
3140 | if ((off & 1) != 0) | |
3141 | off &= ~1; | |
3142 | else | |
3143 | { | |
3144 | bfd_put_32 (output_bfd, relocation, | |
6de2ae4a | 3145 | htab->elf.sgot->contents + off); |
252b5132 RH |
3146 | h->got.offset |= 1; |
3147 | } | |
3148 | } | |
8c694914 | 3149 | else |
b34976b6 | 3150 | unresolved_reloc = FALSE; |
252b5132 RH |
3151 | } |
3152 | else | |
3153 | { | |
ffb2e45b AM |
3154 | if (local_got_offsets == NULL) |
3155 | abort (); | |
252b5132 RH |
3156 | |
3157 | off = local_got_offsets[r_symndx]; | |
3158 | ||
3159 | /* The offset must always be a multiple of 4. We use | |
83be169b AM |
3160 | the least significant bit to record whether we have |
3161 | already generated the necessary reloc. */ | |
252b5132 RH |
3162 | if ((off & 1) != 0) |
3163 | off &= ~1; | |
3164 | else | |
3165 | { | |
6725bdbf | 3166 | bfd_put_32 (output_bfd, relocation, |
6de2ae4a | 3167 | htab->elf.sgot->contents + off); |
252b5132 RH |
3168 | |
3169 | if (info->shared) | |
3170 | { | |
947216bf AM |
3171 | asection *s; |
3172 | Elf_Internal_Rela outrel; | |
3173 | bfd_byte *loc; | |
252b5132 | 3174 | |
6de2ae4a | 3175 | s = htab->elf.srelgot; |
947216bf | 3176 | if (s == NULL) |
ffb2e45b | 3177 | abort (); |
252b5132 | 3178 | |
6de2ae4a L |
3179 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3180 | + htab->elf.sgot->output_offset | |
252b5132 RH |
3181 | + off); |
3182 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
947216bf AM |
3183 | loc = s->contents; |
3184 | loc += s->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3185 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
3186 | } |
3187 | ||
3188 | local_got_offsets[r_symndx] |= 1; | |
3189 | } | |
252b5132 RH |
3190 | } |
3191 | ||
ffb2e45b AM |
3192 | if (off >= (bfd_vma) -2) |
3193 | abort (); | |
3194 | ||
6de2ae4a L |
3195 | relocation = htab->elf.sgot->output_section->vma |
3196 | + htab->elf.sgot->output_offset + off | |
3197 | - htab->elf.sgotplt->output_section->vma | |
3198 | - htab->elf.sgotplt->output_offset; | |
252b5132 RH |
3199 | break; |
3200 | ||
3201 | case R_386_GOTOFF: | |
3202 | /* Relocation is relative to the start of the global offset | |
3203 | table. */ | |
3204 | ||
90f487df L |
3205 | /* Check to make sure it isn't a protected function symbol |
3206 | for shared library since it may not be local when used | |
41bed6dd L |
3207 | as function address. We also need to make sure that a |
3208 | symbol is defined locally. */ | |
3209 | if (info->shared && h) | |
90f487df | 3210 | { |
41bed6dd L |
3211 | if (!h->def_regular) |
3212 | { | |
3213 | const char *v; | |
3214 | ||
3215 | switch (ELF_ST_VISIBILITY (h->other)) | |
3216 | { | |
3217 | case STV_HIDDEN: | |
3218 | v = _("hidden symbol"); | |
3219 | break; | |
3220 | case STV_INTERNAL: | |
3221 | v = _("internal symbol"); | |
3222 | break; | |
3223 | case STV_PROTECTED: | |
3224 | v = _("protected symbol"); | |
3225 | break; | |
3226 | default: | |
3227 | v = _("symbol"); | |
3228 | break; | |
3229 | } | |
3230 | ||
3231 | (*_bfd_error_handler) | |
3232 | (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"), | |
3233 | input_bfd, v, h->root.root.string); | |
3234 | bfd_set_error (bfd_error_bad_value); | |
3235 | return FALSE; | |
3236 | } | |
3237 | else if (!info->executable | |
3238 | && h->type == STT_FUNC | |
3239 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
3240 | { | |
3241 | (*_bfd_error_handler) | |
3242 | (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"), | |
3243 | input_bfd, h->root.root.string); | |
3244 | bfd_set_error (bfd_error_bad_value); | |
3245 | return FALSE; | |
3246 | } | |
90f487df L |
3247 | } |
3248 | ||
8c37241b JJ |
3249 | /* Note that sgot is not involved in this |
3250 | calculation. We always want the start of .got.plt. If we | |
3251 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
252b5132 RH |
3252 | permitted by the ABI, we might have to change this |
3253 | calculation. */ | |
6de2ae4a L |
3254 | relocation -= htab->elf.sgotplt->output_section->vma |
3255 | + htab->elf.sgotplt->output_offset; | |
252b5132 RH |
3256 | break; |
3257 | ||
3258 | case R_386_GOTPC: | |
3259 | /* Use global offset table as symbol value. */ | |
6de2ae4a L |
3260 | relocation = htab->elf.sgotplt->output_section->vma |
3261 | + htab->elf.sgotplt->output_offset; | |
b34976b6 | 3262 | unresolved_reloc = FALSE; |
252b5132 RH |
3263 | break; |
3264 | ||
3265 | case R_386_PLT32: | |
3266 | /* Relocation is to the entry for this symbol in the | |
3267 | procedure linkage table. */ | |
3268 | ||
dd5724d5 | 3269 | /* Resolve a PLT32 reloc against a local symbol directly, |
83be169b | 3270 | without using the procedure linkage table. */ |
252b5132 RH |
3271 | if (h == NULL) |
3272 | break; | |
3273 | ||
dd5724d5 | 3274 | if (h->plt.offset == (bfd_vma) -1 |
6de2ae4a | 3275 | || htab->elf.splt == NULL) |
252b5132 RH |
3276 | { |
3277 | /* We didn't make a PLT entry for this symbol. This | |
83be169b AM |
3278 | happens when statically linking PIC code, or when |
3279 | using -Bsymbolic. */ | |
252b5132 RH |
3280 | break; |
3281 | } | |
3282 | ||
6de2ae4a L |
3283 | relocation = (htab->elf.splt->output_section->vma |
3284 | + htab->elf.splt->output_offset | |
252b5132 | 3285 | + h->plt.offset); |
b34976b6 | 3286 | unresolved_reloc = FALSE; |
252b5132 RH |
3287 | break; |
3288 | ||
3289 | case R_386_32: | |
3290 | case R_386_PC32: | |
3348747a NS |
3291 | if ((input_section->flags & SEC_ALLOC) == 0 |
3292 | || is_vxworks_tls) | |
ec338859 AM |
3293 | break; |
3294 | ||
12d0ee4a | 3295 | if ((info->shared |
ef5aade5 L |
3296 | && (h == NULL |
3297 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3298 | || h->root.type != bfd_link_hash_undefweak) | |
12d0ee4a | 3299 | && (r_type != R_386_PC32 |
f6c52c13 | 3300 | || !SYMBOL_CALLS_LOCAL (info, h))) |
a23b6845 AM |
3301 | || (ELIMINATE_COPY_RELOCS |
3302 | && !info->shared | |
12d0ee4a AM |
3303 | && h != NULL |
3304 | && h->dynindx != -1 | |
f5385ebf AM |
3305 | && !h->non_got_ref |
3306 | && ((h->def_dynamic | |
3307 | && !h->def_regular) | |
28d0b90e | 3308 | || h->root.type == bfd_link_hash_undefweak |
0f88be7a | 3309 | || h->root.type == bfd_link_hash_undefined))) |
252b5132 | 3310 | { |
947216bf AM |
3311 | Elf_Internal_Rela outrel; |
3312 | bfd_byte *loc; | |
b34976b6 | 3313 | bfd_boolean skip, relocate; |
0c715baa | 3314 | asection *sreloc; |
252b5132 RH |
3315 | |
3316 | /* When generating a shared object, these relocations | |
3317 | are copied into the output file to be resolved at run | |
3318 | time. */ | |
3319 | ||
b34976b6 AM |
3320 | skip = FALSE; |
3321 | relocate = FALSE; | |
252b5132 | 3322 | |
c629eae0 JJ |
3323 | outrel.r_offset = |
3324 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
3325 | rel->r_offset); | |
3326 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 3327 | skip = TRUE; |
0bb2d96a | 3328 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3329 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
3330 | outrel.r_offset += (input_section->output_section->vma |
3331 | + input_section->output_offset); | |
3332 | ||
3333 | if (skip) | |
0bb2d96a | 3334 | memset (&outrel, 0, sizeof outrel); |
5a15f56f AM |
3335 | else if (h != NULL |
3336 | && h->dynindx != -1 | |
3337 | && (r_type == R_386_PC32 | |
3338 | || !info->shared | |
55255dae | 3339 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 3340 | || !h->def_regular)) |
0bb2d96a | 3341 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
3342 | else |
3343 | { | |
5a15f56f | 3344 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 3345 | relocate = TRUE; |
5a15f56f | 3346 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
252b5132 RH |
3347 | } |
3348 | ||
cbe950e9 | 3349 | sreloc = elf_section_data (input_section)->sreloc; |
e7c33416 NC |
3350 | |
3351 | BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL); | |
0c715baa | 3352 | |
947216bf AM |
3353 | loc = sreloc->contents; |
3354 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
e7c33416 | 3355 | |
0c715baa | 3356 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
3357 | |
3358 | /* If this reloc is against an external symbol, we do | |
3359 | not want to fiddle with the addend. Otherwise, we | |
3360 | need to include the symbol value so that it becomes | |
3361 | an addend for the dynamic reloc. */ | |
0f88be7a | 3362 | if (! relocate) |
252b5132 RH |
3363 | continue; |
3364 | } | |
252b5132 RH |
3365 | break; |
3366 | ||
37e55690 JJ |
3367 | case R_386_TLS_IE: |
3368 | if (info->shared) | |
3369 | { | |
947216bf AM |
3370 | Elf_Internal_Rela outrel; |
3371 | bfd_byte *loc; | |
37e55690 | 3372 | asection *sreloc; |
37e55690 JJ |
3373 | |
3374 | outrel.r_offset = rel->r_offset | |
3375 | + input_section->output_section->vma | |
3376 | + input_section->output_offset; | |
3377 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
3378 | sreloc = elf_section_data (input_section)->sreloc; | |
3379 | if (sreloc == NULL) | |
3380 | abort (); | |
947216bf AM |
3381 | loc = sreloc->contents; |
3382 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
3383 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3384 | } | |
3385 | /* Fall through */ | |
3386 | ||
13ae64f3 | 3387 | case R_386_TLS_GD: |
67a4f2b7 AO |
3388 | case R_386_TLS_GOTDESC: |
3389 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 3390 | case R_386_TLS_IE_32: |
37e55690 | 3391 | case R_386_TLS_GOTIE: |
13ae64f3 JJ |
3392 | tls_type = GOT_UNKNOWN; |
3393 | if (h == NULL && local_got_offsets) | |
3394 | tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx]; | |
3395 | else if (h != NULL) | |
142411ca | 3396 | tls_type = elf_i386_hash_entry(h)->tls_type; |
37e55690 JJ |
3397 | if (tls_type == GOT_TLS_IE) |
3398 | tls_type = GOT_TLS_IE_NEG; | |
142411ca L |
3399 | |
3400 | if (! elf_i386_tls_transition (info, input_bfd, | |
3401 | input_section, contents, | |
3402 | symtab_hdr, sym_hashes, | |
3403 | &r_type, tls_type, rel, | |
4c544807 | 3404 | relend, h, r_symndx)) |
142411ca | 3405 | return FALSE; |
13ae64f3 JJ |
3406 | |
3407 | if (r_type == R_386_TLS_LE_32) | |
3408 | { | |
82e51918 | 3409 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
3410 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
3411 | { | |
142411ca | 3412 | unsigned int type; |
13ae64f3 JJ |
3413 | bfd_vma roff; |
3414 | ||
3415 | /* GD->LE transition. */ | |
13ae64f3 | 3416 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
3417 | if (type == 0x04) |
3418 | { | |
3419 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
3420 | Change it into: | |
3421 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
3422 | (6 byte form of subl). */ | |
13ae64f3 JJ |
3423 | memcpy (contents + rel->r_offset - 3, |
3424 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
142411ca | 3425 | roff = rel->r_offset + 5; |
13ae64f3 JJ |
3426 | } |
3427 | else | |
3428 | { | |
142411ca L |
3429 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop |
3430 | Change it into: | |
3431 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
3432 | (6 byte form of subl). */ | |
3433 | memcpy (contents + rel->r_offset - 2, | |
3434 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
3435 | roff = rel->r_offset + 6; | |
13ae64f3 | 3436 | } |
eb4ff4d6 | 3437 | bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation), |
13ae64f3 | 3438 | contents + roff); |
a3fadc9a | 3439 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
3440 | rel++; |
3441 | continue; | |
3442 | } | |
67a4f2b7 AO |
3443 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
3444 | { | |
3445 | /* GDesc -> LE transition. | |
3446 | It's originally something like: | |
3447 | leal x@tlsdesc(%ebx), %eax | |
3448 | ||
3449 | leal x@ntpoff, %eax | |
3450 | ||
3451 | Registers other than %eax may be set up here. */ | |
3452 | ||
142411ca | 3453 | unsigned int val; |
67a4f2b7 AO |
3454 | bfd_vma roff; |
3455 | ||
67a4f2b7 | 3456 | roff = rel->r_offset; |
67a4f2b7 | 3457 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
3458 | |
3459 | /* Now modify the instruction as appropriate. */ | |
3460 | /* aoliva FIXME: remove the above and xor the byte | |
3461 | below with 0x86. */ | |
3462 | bfd_put_8 (output_bfd, val ^ 0x86, | |
3463 | contents + roff - 1); | |
eb4ff4d6 | 3464 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
67a4f2b7 AO |
3465 | contents + roff); |
3466 | continue; | |
3467 | } | |
3468 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
3469 | { | |
3470 | /* GDesc -> LE transition. | |
3471 | It's originally: | |
3472 | call *(%eax) | |
3473 | Turn it into: | |
142411ca | 3474 | xchg %ax,%ax */ |
67a4f2b7 | 3475 | |
67a4f2b7 | 3476 | bfd_vma roff; |
142411ca | 3477 | |
67a4f2b7 | 3478 | roff = rel->r_offset; |
10efb593 | 3479 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
3480 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3481 | continue; | |
3482 | } | |
37e55690 | 3483 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE) |
13ae64f3 | 3484 | { |
142411ca | 3485 | unsigned int val; |
13ae64f3 JJ |
3486 | |
3487 | /* IE->LE transition: | |
37e55690 JJ |
3488 | Originally it can be one of: |
3489 | movl foo, %eax | |
3490 | movl foo, %reg | |
3491 | addl foo, %reg | |
3492 | We change it into: | |
3493 | movl $foo, %eax | |
3494 | movl $foo, %reg | |
3495 | addl $foo, %reg. */ | |
37e55690 | 3496 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
37e55690 JJ |
3497 | if (val == 0xa1) |
3498 | { | |
3499 | /* movl foo, %eax. */ | |
55fd94b0 AM |
3500 | bfd_put_8 (output_bfd, 0xb8, |
3501 | contents + rel->r_offset - 1); | |
37e55690 | 3502 | } |
299bf759 | 3503 | else |
37e55690 | 3504 | { |
142411ca L |
3505 | unsigned int type; |
3506 | ||
55fd94b0 AM |
3507 | type = bfd_get_8 (input_bfd, |
3508 | contents + rel->r_offset - 2); | |
299bf759 | 3509 | switch (type) |
26e41594 | 3510 | { |
299bf759 L |
3511 | case 0x8b: |
3512 | /* movl */ | |
299bf759 L |
3513 | bfd_put_8 (output_bfd, 0xc7, |
3514 | contents + rel->r_offset - 2); | |
3515 | bfd_put_8 (output_bfd, | |
3516 | 0xc0 | ((val >> 3) & 7), | |
3517 | contents + rel->r_offset - 1); | |
3518 | break; | |
3519 | case 0x03: | |
3520 | /* addl */ | |
299bf759 L |
3521 | bfd_put_8 (output_bfd, 0x81, |
3522 | contents + rel->r_offset - 2); | |
3523 | bfd_put_8 (output_bfd, | |
3524 | 0xc0 | ((val >> 3) & 7), | |
3525 | contents + rel->r_offset - 1); | |
3526 | break; | |
3527 | default: | |
3528 | BFD_FAIL (); | |
3529 | break; | |
26e41594 | 3530 | } |
37e55690 | 3531 | } |
eb4ff4d6 | 3532 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
37e55690 JJ |
3533 | contents + rel->r_offset); |
3534 | continue; | |
3535 | } | |
3536 | else | |
3537 | { | |
3538 | unsigned int val, type; | |
3539 | ||
3540 | /* {IE_32,GOTIE}->LE transition: | |
3541 | Originally it can be one of: | |
13ae64f3 | 3542 | subl foo(%reg1), %reg2 |
13ae64f3 | 3543 | movl foo(%reg1), %reg2 |
37e55690 | 3544 | addl foo(%reg1), %reg2 |
13ae64f3 JJ |
3545 | We change it into: |
3546 | subl $foo, %reg2 | |
37e55690 JJ |
3547 | movl $foo, %reg2 (6 byte form) |
3548 | addl $foo, %reg2. */ | |
13ae64f3 JJ |
3549 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
3550 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
13ae64f3 JJ |
3551 | if (type == 0x8b) |
3552 | { | |
3553 | /* movl */ | |
13ae64f3 JJ |
3554 | bfd_put_8 (output_bfd, 0xc7, |
3555 | contents + rel->r_offset - 2); | |
3556 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3557 | contents + rel->r_offset - 1); | |
3558 | } | |
3559 | else if (type == 0x2b) | |
3560 | { | |
3561 | /* subl */ | |
13ae64f3 JJ |
3562 | bfd_put_8 (output_bfd, 0x81, |
3563 | contents + rel->r_offset - 2); | |
3564 | bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), | |
3565 | contents + rel->r_offset - 1); | |
3566 | } | |
37e55690 JJ |
3567 | else if (type == 0x03) |
3568 | { | |
3569 | /* addl */ | |
3570 | bfd_put_8 (output_bfd, 0x81, | |
3571 | contents + rel->r_offset - 2); | |
3572 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3573 | contents + rel->r_offset - 1); | |
3574 | } | |
13ae64f3 JJ |
3575 | else |
3576 | BFD_FAIL (); | |
37e55690 | 3577 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE) |
eb4ff4d6 | 3578 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
37e55690 JJ |
3579 | contents + rel->r_offset); |
3580 | else | |
eb4ff4d6 | 3581 | bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation), |
37e55690 | 3582 | contents + rel->r_offset); |
13ae64f3 JJ |
3583 | continue; |
3584 | } | |
3585 | } | |
3586 | ||
6de2ae4a | 3587 | if (htab->elf.sgot == NULL) |
13ae64f3 JJ |
3588 | abort (); |
3589 | ||
3590 | if (h != NULL) | |
67a4f2b7 AO |
3591 | { |
3592 | off = h->got.offset; | |
3593 | offplt = elf_i386_hash_entry (h)->tlsdesc_got; | |
3594 | } | |
13ae64f3 JJ |
3595 | else |
3596 | { | |
3597 | if (local_got_offsets == NULL) | |
3598 | abort (); | |
3599 | ||
3600 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3601 | offplt = local_tlsdesc_gotents[r_symndx]; |
13ae64f3 JJ |
3602 | } |
3603 | ||
3604 | if ((off & 1) != 0) | |
3605 | off &= ~1; | |
26e41594 | 3606 | else |
13ae64f3 | 3607 | { |
947216bf AM |
3608 | Elf_Internal_Rela outrel; |
3609 | bfd_byte *loc; | |
13ae64f3 | 3610 | int dr_type, indx; |
67a4f2b7 | 3611 | asection *sreloc; |
13ae64f3 | 3612 | |
6de2ae4a | 3613 | if (htab->elf.srelgot == NULL) |
13ae64f3 JJ |
3614 | abort (); |
3615 | ||
67a4f2b7 AO |
3616 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
3617 | ||
3618 | if (GOT_TLS_GDESC_P (tls_type)) | |
3619 | { | |
3620 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC); | |
3621 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8 | |
6de2ae4a L |
3622 | <= htab->elf.sgotplt->size); |
3623 | outrel.r_offset = (htab->elf.sgotplt->output_section->vma | |
3624 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3625 | + offplt |
3626 | + htab->sgotplt_jump_table_size); | |
6de2ae4a | 3627 | sreloc = htab->elf.srelplt; |
67a4f2b7 | 3628 | loc = sreloc->contents; |
5ae0bfb6 RS |
3629 | loc += (htab->next_tls_desc_index++ |
3630 | * sizeof (Elf32_External_Rel)); | |
67a4f2b7 AO |
3631 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) |
3632 | <= sreloc->contents + sreloc->size); | |
3633 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
3634 | if (indx == 0) | |
3635 | { | |
3636 | BFD_ASSERT (! unresolved_reloc); | |
3637 | bfd_put_32 (output_bfd, | |
eb4ff4d6 | 3638 | relocation - elf_i386_dtpoff_base (info), |
6de2ae4a | 3639 | htab->elf.sgotplt->contents + offplt |
67a4f2b7 AO |
3640 | + htab->sgotplt_jump_table_size + 4); |
3641 | } | |
3642 | else | |
3643 | { | |
3644 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 3645 | htab->elf.sgotplt->contents + offplt |
67a4f2b7 AO |
3646 | + htab->sgotplt_jump_table_size + 4); |
3647 | } | |
3648 | } | |
3649 | ||
6de2ae4a | 3650 | sreloc = htab->elf.srelgot; |
67a4f2b7 | 3651 | |
6de2ae4a L |
3652 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3653 | + htab->elf.sgot->output_offset + off); | |
13ae64f3 | 3654 | |
67a4f2b7 | 3655 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 | 3656 | dr_type = R_386_TLS_DTPMOD32; |
67a4f2b7 AO |
3657 | else if (GOT_TLS_GDESC_P (tls_type)) |
3658 | goto dr_done; | |
37e55690 JJ |
3659 | else if (tls_type == GOT_TLS_IE_POS) |
3660 | dr_type = R_386_TLS_TPOFF; | |
13ae64f3 JJ |
3661 | else |
3662 | dr_type = R_386_TLS_TPOFF32; | |
67a4f2b7 | 3663 | |
37e55690 | 3664 | if (dr_type == R_386_TLS_TPOFF && indx == 0) |
eb4ff4d6 L |
3665 | bfd_put_32 (output_bfd, |
3666 | relocation - elf_i386_dtpoff_base (info), | |
6de2ae4a | 3667 | htab->elf.sgot->contents + off); |
37e55690 | 3668 | else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) |
eb4ff4d6 L |
3669 | bfd_put_32 (output_bfd, |
3670 | elf_i386_dtpoff_base (info) - relocation, | |
6de2ae4a | 3671 | htab->elf.sgot->contents + off); |
67a4f2b7 | 3672 | else if (dr_type != R_386_TLS_DESC) |
c366c25e | 3673 | bfd_put_32 (output_bfd, 0, |
6de2ae4a | 3674 | htab->elf.sgot->contents + off); |
13ae64f3 | 3675 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
67a4f2b7 AO |
3676 | |
3677 | loc = sreloc->contents; | |
3678 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
3679 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) | |
3680 | <= sreloc->contents + sreloc->size); | |
13ae64f3 JJ |
3681 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3682 | ||
67a4f2b7 | 3683 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 JJ |
3684 | { |
3685 | if (indx == 0) | |
3686 | { | |
82e51918 | 3687 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 | 3688 | bfd_put_32 (output_bfd, |
eb4ff4d6 | 3689 | relocation - elf_i386_dtpoff_base (info), |
6de2ae4a | 3690 | htab->elf.sgot->contents + off + 4); |
13ae64f3 JJ |
3691 | } |
3692 | else | |
3693 | { | |
3694 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 3695 | htab->elf.sgot->contents + off + 4); |
13ae64f3 JJ |
3696 | outrel.r_info = ELF32_R_INFO (indx, |
3697 | R_386_TLS_DTPOFF32); | |
3698 | outrel.r_offset += 4; | |
67a4f2b7 | 3699 | sreloc->reloc_count++; |
947216bf | 3700 | loc += sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
3701 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) |
3702 | <= sreloc->contents + sreloc->size); | |
947216bf | 3703 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
13ae64f3 JJ |
3704 | } |
3705 | } | |
37e55690 JJ |
3706 | else if (tls_type == GOT_TLS_IE_BOTH) |
3707 | { | |
3708 | bfd_put_32 (output_bfd, | |
eb4ff4d6 L |
3709 | (indx == 0 |
3710 | ? relocation - elf_i386_dtpoff_base (info) | |
3711 | : 0), | |
6de2ae4a | 3712 | htab->elf.sgot->contents + off + 4); |
37e55690 JJ |
3713 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); |
3714 | outrel.r_offset += 4; | |
67a4f2b7 | 3715 | sreloc->reloc_count++; |
947216bf | 3716 | loc += sizeof (Elf32_External_Rel); |
37e55690 JJ |
3717 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3718 | } | |
13ae64f3 | 3719 | |
67a4f2b7 | 3720 | dr_done: |
13ae64f3 JJ |
3721 | if (h != NULL) |
3722 | h->got.offset |= 1; | |
3723 | else | |
3724 | local_got_offsets[r_symndx] |= 1; | |
3725 | } | |
3726 | ||
67a4f2b7 AO |
3727 | if (off >= (bfd_vma) -2 |
3728 | && ! GOT_TLS_GDESC_P (tls_type)) | |
13ae64f3 | 3729 | abort (); |
67a4f2b7 AO |
3730 | if (r_type == R_386_TLS_GOTDESC |
3731 | || r_type == R_386_TLS_DESC_CALL) | |
3732 | { | |
3733 | relocation = htab->sgotplt_jump_table_size + offplt; | |
3734 | unresolved_reloc = FALSE; | |
3735 | } | |
3736 | else if (r_type == ELF32_R_TYPE (rel->r_info)) | |
13ae64f3 | 3737 | { |
6de2ae4a L |
3738 | bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma |
3739 | + htab->elf.sgotplt->output_offset; | |
3740 | relocation = htab->elf.sgot->output_section->vma | |
3741 | + htab->elf.sgot->output_offset + off - g_o_t; | |
37e55690 JJ |
3742 | if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) |
3743 | && tls_type == GOT_TLS_IE_BOTH) | |
3744 | relocation += 4; | |
3745 | if (r_type == R_386_TLS_IE) | |
8c37241b | 3746 | relocation += g_o_t; |
b34976b6 | 3747 | unresolved_reloc = FALSE; |
13ae64f3 | 3748 | } |
67a4f2b7 | 3749 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
13ae64f3 JJ |
3750 | { |
3751 | unsigned int val, type; | |
3752 | bfd_vma roff; | |
3753 | ||
3754 | /* GD->IE transition. */ | |
13ae64f3 | 3755 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
3756 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
3757 | if (type == 0x04) | |
3758 | { | |
3759 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
3760 | Change it into: | |
3761 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 | 3762 | val >>= 3; |
142411ca | 3763 | roff = rel->r_offset - 3; |
13ae64f3 JJ |
3764 | } |
3765 | else | |
3766 | { | |
3767 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
3768 | Change it into: | |
3769 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 JJ |
3770 | roff = rel->r_offset - 2; |
3771 | } | |
3772 | memcpy (contents + roff, | |
3773 | "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); | |
3774 | contents[roff + 7] = 0x80 | (val & 7); | |
37e55690 JJ |
3775 | /* If foo is used only with foo@gotntpoff(%reg) and |
3776 | foo@indntpoff, but not with foo@gottpoff(%reg), change | |
3777 | subl $foo@gottpoff(%reg), %eax | |
3778 | into: | |
3779 | addl $foo@gotntpoff(%reg), %eax. */ | |
ebcfb3c0 JJ |
3780 | if (tls_type == GOT_TLS_IE_POS) |
3781 | contents[roff + 6] = 0x03; | |
8c37241b | 3782 | bfd_put_32 (output_bfd, |
6de2ae4a L |
3783 | htab->elf.sgot->output_section->vma |
3784 | + htab->elf.sgot->output_offset + off | |
3785 | - htab->elf.sgotplt->output_section->vma | |
3786 | - htab->elf.sgotplt->output_offset, | |
13ae64f3 JJ |
3787 | contents + roff + 8); |
3788 | /* Skip R_386_PLT32. */ | |
3789 | rel++; | |
3790 | continue; | |
3791 | } | |
67a4f2b7 AO |
3792 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
3793 | { | |
3794 | /* GDesc -> IE transition. | |
3795 | It's originally something like: | |
3796 | leal x@tlsdesc(%ebx), %eax | |
3797 | ||
3798 | Change it to: | |
142411ca | 3799 | movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax |
67a4f2b7 AO |
3800 | or: |
3801 | movl x@gottpoff(%ebx), %eax # before negl %eax | |
3802 | ||
3803 | Registers other than %eax may be set up here. */ | |
3804 | ||
67a4f2b7 AO |
3805 | bfd_vma roff; |
3806 | ||
3807 | /* First, make sure it's a leal adding ebx to a 32-bit | |
3808 | offset into any register, although it's probably | |
3809 | almost always going to be eax. */ | |
3810 | roff = rel->r_offset; | |
67a4f2b7 AO |
3811 | |
3812 | /* Now modify the instruction as appropriate. */ | |
3813 | /* To turn a leal into a movl in the form we use it, it | |
3814 | suffices to change the first byte from 0x8d to 0x8b. | |
3815 | aoliva FIXME: should we decide to keep the leal, all | |
3816 | we have to do is remove the statement below, and | |
3817 | adjust the relaxation of R_386_TLS_DESC_CALL. */ | |
3818 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
3819 | ||
3820 | if (tls_type == GOT_TLS_IE_BOTH) | |
3821 | off += 4; | |
3822 | ||
3823 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
3824 | htab->elf.sgot->output_section->vma |
3825 | + htab->elf.sgot->output_offset + off | |
3826 | - htab->elf.sgotplt->output_section->vma | |
3827 | - htab->elf.sgotplt->output_offset, | |
67a4f2b7 AO |
3828 | contents + roff); |
3829 | continue; | |
3830 | } | |
3831 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
3832 | { | |
3833 | /* GDesc -> IE transition. | |
3834 | It's originally: | |
3835 | call *(%eax) | |
3836 | ||
3837 | Change it to: | |
142411ca | 3838 | xchg %ax,%ax |
67a4f2b7 AO |
3839 | or |
3840 | negl %eax | |
3841 | depending on how we transformed the TLS_GOTDESC above. | |
3842 | */ | |
3843 | ||
67a4f2b7 AO |
3844 | bfd_vma roff; |
3845 | ||
67a4f2b7 | 3846 | roff = rel->r_offset; |
67a4f2b7 AO |
3847 | |
3848 | /* Now modify the instruction as appropriate. */ | |
3849 | if (tls_type != GOT_TLS_IE_NEG) | |
3850 | { | |
10efb593 L |
3851 | /* xchg %ax,%ax */ |
3852 | bfd_put_8 (output_bfd, 0x66, contents + roff); | |
67a4f2b7 AO |
3853 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3854 | } | |
3855 | else | |
3856 | { | |
3857 | /* negl %eax */ | |
3858 | bfd_put_8 (output_bfd, 0xf7, contents + roff); | |
3859 | bfd_put_8 (output_bfd, 0xd8, contents + roff + 1); | |
3860 | } | |
3861 | ||
3862 | continue; | |
3863 | } | |
3864 | else | |
3865 | BFD_ASSERT (FALSE); | |
13ae64f3 JJ |
3866 | break; |
3867 | ||
3868 | case R_386_TLS_LDM: | |
142411ca L |
3869 | if (! elf_i386_tls_transition (info, input_bfd, |
3870 | input_section, contents, | |
3871 | symtab_hdr, sym_hashes, | |
3872 | &r_type, GOT_UNKNOWN, rel, | |
4c544807 | 3873 | relend, h, r_symndx)) |
142411ca | 3874 | return FALSE; |
13ae64f3 | 3875 | |
142411ca L |
3876 | if (r_type != R_386_TLS_LDM) |
3877 | { | |
13ae64f3 | 3878 | /* LD->LE transition: |
13ae64f3 JJ |
3879 | leal foo(%reg), %eax; call ___tls_get_addr. |
3880 | We change it into: | |
3881 | movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */ | |
142411ca | 3882 | BFD_ASSERT (r_type == R_386_TLS_LE_32); |
13ae64f3 JJ |
3883 | memcpy (contents + rel->r_offset - 2, |
3884 | "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); | |
a3fadc9a | 3885 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
3886 | rel++; |
3887 | continue; | |
3888 | } | |
3889 | ||
6de2ae4a | 3890 | if (htab->elf.sgot == NULL) |
13ae64f3 JJ |
3891 | abort (); |
3892 | ||
3893 | off = htab->tls_ldm_got.offset; | |
3894 | if (off & 1) | |
3895 | off &= ~1; | |
3896 | else | |
3897 | { | |
947216bf AM |
3898 | Elf_Internal_Rela outrel; |
3899 | bfd_byte *loc; | |
13ae64f3 | 3900 | |
6de2ae4a | 3901 | if (htab->elf.srelgot == NULL) |
13ae64f3 JJ |
3902 | abort (); |
3903 | ||
6de2ae4a L |
3904 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3905 | + htab->elf.sgot->output_offset + off); | |
13ae64f3 JJ |
3906 | |
3907 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 3908 | htab->elf.sgot->contents + off); |
13ae64f3 | 3909 | bfd_put_32 (output_bfd, 0, |
6de2ae4a | 3910 | htab->elf.sgot->contents + off + 4); |
13ae64f3 | 3911 | outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); |
6de2ae4a L |
3912 | loc = htab->elf.srelgot->contents; |
3913 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
3914 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3915 | htab->tls_ldm_got.offset |= 1; | |
3916 | } | |
6de2ae4a L |
3917 | relocation = htab->elf.sgot->output_section->vma |
3918 | + htab->elf.sgot->output_offset + off | |
3919 | - htab->elf.sgotplt->output_section->vma | |
3920 | - htab->elf.sgotplt->output_offset; | |
b34976b6 | 3921 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
3922 | break; |
3923 | ||
3924 | case R_386_TLS_LDO_32: | |
a45bb67d | 3925 | if (info->shared || (input_section->flags & SEC_CODE) == 0) |
eb4ff4d6 | 3926 | relocation -= elf_i386_dtpoff_base (info); |
13ae64f3 JJ |
3927 | else |
3928 | /* When converting LDO to LE, we must negate. */ | |
eb4ff4d6 | 3929 | relocation = -elf_i386_tpoff (info, relocation); |
13ae64f3 JJ |
3930 | break; |
3931 | ||
3932 | case R_386_TLS_LE_32: | |
13ae64f3 | 3933 | case R_386_TLS_LE: |
37e55690 JJ |
3934 | if (info->shared) |
3935 | { | |
947216bf | 3936 | Elf_Internal_Rela outrel; |
37e55690 | 3937 | asection *sreloc; |
947216bf | 3938 | bfd_byte *loc; |
37e55690 JJ |
3939 | int indx; |
3940 | ||
3941 | outrel.r_offset = rel->r_offset | |
3942 | + input_section->output_section->vma | |
3943 | + input_section->output_offset; | |
3944 | if (h != NULL && h->dynindx != -1) | |
3945 | indx = h->dynindx; | |
3946 | else | |
3947 | indx = 0; | |
3948 | if (r_type == R_386_TLS_LE_32) | |
3949 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); | |
3950 | else | |
3951 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
3952 | sreloc = elf_section_data (input_section)->sreloc; | |
3953 | if (sreloc == NULL) | |
3954 | abort (); | |
947216bf AM |
3955 | loc = sreloc->contents; |
3956 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
3957 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3958 | if (indx) | |
3959 | continue; | |
3960 | else if (r_type == R_386_TLS_LE_32) | |
eb4ff4d6 | 3961 | relocation = elf_i386_dtpoff_base (info) - relocation; |
37e55690 | 3962 | else |
eb4ff4d6 | 3963 | relocation -= elf_i386_dtpoff_base (info); |
37e55690 JJ |
3964 | } |
3965 | else if (r_type == R_386_TLS_LE_32) | |
eb4ff4d6 | 3966 | relocation = elf_i386_tpoff (info, relocation); |
37e55690 | 3967 | else |
eb4ff4d6 | 3968 | relocation = -elf_i386_tpoff (info, relocation); |
13ae64f3 JJ |
3969 | break; |
3970 | ||
252b5132 RH |
3971 | default: |
3972 | break; | |
3973 | } | |
3974 | ||
239e1f3a AM |
3975 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3976 | because such sections are not SEC_ALLOC and thus ld.so will | |
3977 | not process them. */ | |
8c694914 | 3978 | if (unresolved_reloc |
239e1f3a | 3979 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 3980 | && h->def_dynamic)) |
6a30718d JJ |
3981 | { |
3982 | (*_bfd_error_handler) | |
843fe662 | 3983 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
3984 | input_bfd, |
3985 | input_section, | |
6a30718d | 3986 | (long) rel->r_offset, |
843fe662 | 3987 | howto->name, |
6a30718d | 3988 | h->root.root.string); |
b34976b6 | 3989 | return FALSE; |
6a30718d | 3990 | } |
83be169b | 3991 | |
cbe950e9 | 3992 | do_relocation: |
252b5132 RH |
3993 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3994 | contents, rel->r_offset, | |
55fd94b0 | 3995 | relocation, 0); |
252b5132 | 3996 | |
cf5c0c5b | 3997 | if (r != bfd_reloc_ok) |
252b5132 | 3998 | { |
cf5c0c5b | 3999 | const char *name; |
ffb2e45b | 4000 | |
cf5c0c5b AM |
4001 | if (h != NULL) |
4002 | name = h->root.root.string; | |
4003 | else | |
4004 | { | |
4005 | name = bfd_elf_string_from_elf_section (input_bfd, | |
4006 | symtab_hdr->sh_link, | |
4007 | sym->st_name); | |
4008 | if (name == NULL) | |
b34976b6 | 4009 | return FALSE; |
cf5c0c5b AM |
4010 | if (*name == '\0') |
4011 | name = bfd_section_name (input_bfd, sec); | |
4012 | } | |
ffb2e45b | 4013 | |
cf5c0c5b AM |
4014 | if (r == bfd_reloc_overflow) |
4015 | { | |
cf5c0c5b | 4016 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
4017 | (info, (h ? &h->root : NULL), name, howto->name, |
4018 | (bfd_vma) 0, input_bfd, input_section, | |
4019 | rel->r_offset))) | |
b34976b6 | 4020 | return FALSE; |
cf5c0c5b AM |
4021 | } |
4022 | else | |
4023 | { | |
4024 | (*_bfd_error_handler) | |
d003868e AM |
4025 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
4026 | input_bfd, input_section, | |
cf5c0c5b | 4027 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 4028 | return FALSE; |
cf5c0c5b | 4029 | } |
252b5132 RH |
4030 | } |
4031 | } | |
4032 | ||
b34976b6 | 4033 | return TRUE; |
252b5132 RH |
4034 | } |
4035 | ||
4036 | /* Finish up dynamic symbol handling. We set the contents of various | |
4037 | dynamic sections here. */ | |
4038 | ||
b34976b6 | 4039 | static bfd_boolean |
55fd94b0 AM |
4040 | elf_i386_finish_dynamic_symbol (bfd *output_bfd, |
4041 | struct bfd_link_info *info, | |
4042 | struct elf_link_hash_entry *h, | |
4043 | Elf_Internal_Sym *sym) | |
252b5132 | 4044 | { |
6725bdbf | 4045 | struct elf_i386_link_hash_table *htab; |
252b5132 | 4046 | |
6725bdbf | 4047 | htab = elf_i386_hash_table (info); |
252b5132 RH |
4048 | |
4049 | if (h->plt.offset != (bfd_vma) -1) | |
4050 | { | |
252b5132 RH |
4051 | bfd_vma plt_index; |
4052 | bfd_vma got_offset; | |
947216bf AM |
4053 | Elf_Internal_Rela rel; |
4054 | bfd_byte *loc; | |
cbe950e9 L |
4055 | asection *plt, *gotplt, *relplt; |
4056 | ||
4057 | /* When building a static executable, use .iplt, .igot.plt and | |
4058 | .rel.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 4059 | if (htab->elf.splt != NULL) |
cbe950e9 | 4060 | { |
6de2ae4a L |
4061 | plt = htab->elf.splt; |
4062 | gotplt = htab->elf.sgotplt; | |
4063 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
4064 | } |
4065 | else | |
4066 | { | |
6de2ae4a L |
4067 | plt = htab->elf.iplt; |
4068 | gotplt = htab->elf.igotplt; | |
4069 | relplt = htab->elf.irelplt; | |
cbe950e9 | 4070 | } |
252b5132 RH |
4071 | |
4072 | /* This symbol has an entry in the procedure linkage table. Set | |
4073 | it up. */ | |
4074 | ||
cbe950e9 L |
4075 | if ((h->dynindx == -1 |
4076 | && !((h->forced_local || info->executable) | |
4077 | && h->def_regular | |
4078 | && h->type == STT_GNU_IFUNC)) | |
4079 | || plt == NULL | |
4080 | || gotplt == NULL | |
4081 | || relplt == NULL) | |
ffb2e45b | 4082 | abort (); |
252b5132 RH |
4083 | |
4084 | /* Get the index in the procedure linkage table which | |
4085 | corresponds to this symbol. This is the index of this symbol | |
4086 | in all the symbols for which we are making plt entries. The | |
cbe950e9 | 4087 | first entry in the procedure linkage table is reserved. |
252b5132 | 4088 | |
cbe950e9 | 4089 | Get the offset into the .got table of the entry that |
252b5132 | 4090 | corresponds to this function. Each .got entry is 4 bytes. |
cbe950e9 L |
4091 | The first three are reserved. |
4092 | ||
4093 | For static executables, we don't reserve anything. */ | |
4094 | ||
6de2ae4a | 4095 | if (plt == htab->elf.splt) |
cbe950e9 L |
4096 | { |
4097 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
4098 | got_offset = (plt_index + 3) * 4; | |
4099 | } | |
4100 | else | |
4101 | { | |
4102 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
4103 | got_offset = plt_index * 4; | |
4104 | } | |
252b5132 RH |
4105 | |
4106 | /* Fill in the entry in the procedure linkage table. */ | |
4107 | if (! info->shared) | |
4108 | { | |
cbe950e9 | 4109 | memcpy (plt->contents + h->plt.offset, elf_i386_plt_entry, |
252b5132 RH |
4110 | PLT_ENTRY_SIZE); |
4111 | bfd_put_32 (output_bfd, | |
cbe950e9 L |
4112 | (gotplt->output_section->vma |
4113 | + gotplt->output_offset | |
252b5132 | 4114 | + got_offset), |
cbe950e9 | 4115 | plt->contents + h->plt.offset + 2); |
eac338cf PB |
4116 | |
4117 | if (htab->is_vxworks) | |
4118 | { | |
4119 | int s, k, reloc_index; | |
4120 | ||
4121 | /* Create the R_386_32 relocation referencing the GOT | |
4122 | for this PLT entry. */ | |
4123 | ||
4124 | /* S: Current slot number (zero-based). */ | |
4125 | s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
4126 | /* K: Number of relocations for PLTResolve. */ | |
4127 | if (info->shared) | |
4128 | k = PLTRESOLVE_RELOCS_SHLIB; | |
4129 | else | |
4130 | k = PLTRESOLVE_RELOCS; | |
4131 | /* Skip the PLTresolve relocations, and the relocations for | |
4132 | the other PLT slots. */ | |
4133 | reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS; | |
4134 | loc = (htab->srelplt2->contents + reloc_index | |
4135 | * sizeof (Elf32_External_Rel)); | |
4136 | ||
6de2ae4a L |
4137 | rel.r_offset = (htab->elf.splt->output_section->vma |
4138 | + htab->elf.splt->output_offset | |
eac338cf | 4139 | + h->plt.offset + 2), |
7325306f | 4140 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4141 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
4142 | ||
4143 | /* Create the R_386_32 relocation referencing the beginning of | |
4144 | the PLT for this GOT entry. */ | |
6de2ae4a L |
4145 | rel.r_offset = (htab->elf.sgotplt->output_section->vma |
4146 | + htab->elf.sgotplt->output_offset | |
eac338cf | 4147 | + got_offset); |
7325306f | 4148 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf PB |
4149 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
4150 | loc + sizeof (Elf32_External_Rel)); | |
4151 | } | |
252b5132 RH |
4152 | } |
4153 | else | |
4154 | { | |
cbe950e9 | 4155 | memcpy (plt->contents + h->plt.offset, elf_i386_pic_plt_entry, |
252b5132 RH |
4156 | PLT_ENTRY_SIZE); |
4157 | bfd_put_32 (output_bfd, got_offset, | |
cbe950e9 | 4158 | plt->contents + h->plt.offset + 2); |
252b5132 RH |
4159 | } |
4160 | ||
cbe950e9 | 4161 | /* Don't fill PLT entry for static executables. */ |
6de2ae4a | 4162 | if (plt == htab->elf.splt) |
cbe950e9 L |
4163 | { |
4164 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel), | |
4165 | plt->contents + h->plt.offset + 7); | |
4166 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), | |
4167 | plt->contents + h->plt.offset + 12); | |
4168 | } | |
252b5132 RH |
4169 | |
4170 | /* Fill in the entry in the global offset table. */ | |
4171 | bfd_put_32 (output_bfd, | |
cbe950e9 L |
4172 | (plt->output_section->vma |
4173 | + plt->output_offset | |
252b5132 RH |
4174 | + h->plt.offset |
4175 | + 6), | |
cbe950e9 | 4176 | gotplt->contents + got_offset); |
252b5132 RH |
4177 | |
4178 | /* Fill in the entry in the .rel.plt section. */ | |
cbe950e9 L |
4179 | rel.r_offset = (gotplt->output_section->vma |
4180 | + gotplt->output_offset | |
252b5132 | 4181 | + got_offset); |
cbe950e9 L |
4182 | if (h->dynindx == -1 |
4183 | || ((info->executable | |
4184 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
4185 | && h->def_regular | |
4186 | && h->type == STT_GNU_IFUNC)) | |
4187 | { | |
4188 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
4189 | R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend | |
4190 | in the .got.plt section. */ | |
4191 | bfd_put_32 (output_bfd, | |
4192 | (h->root.u.def.value | |
4193 | + h->root.u.def.section->output_section->vma | |
4194 | + h->root.u.def.section->output_offset), | |
4195 | gotplt->contents + got_offset); | |
4196 | rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE); | |
4197 | } | |
4198 | else | |
4199 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); | |
4200 | loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 4201 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 | 4202 | |
f5385ebf | 4203 | if (!h->def_regular) |
252b5132 RH |
4204 | { |
4205 | /* Mark the symbol as undefined, rather than as defined in | |
c6585bbb JJ |
4206 | the .plt section. Leave the value if there were any |
4207 | relocations where pointer equality matters (this is a clue | |
51b64d56 AM |
4208 | for the dynamic linker, to make function pointer |
4209 | comparisons work between an application and shared | |
c6585bbb JJ |
4210 | library), otherwise set it to zero. If a function is only |
4211 | called from a binary, there is no need to slow down | |
4212 | shared libraries because of that. */ | |
252b5132 | 4213 | sym->st_shndx = SHN_UNDEF; |
f5385ebf | 4214 | if (!h->pointer_equality_needed) |
c6585bbb | 4215 | sym->st_value = 0; |
252b5132 RH |
4216 | } |
4217 | } | |
4218 | ||
13ae64f3 | 4219 | if (h->got.offset != (bfd_vma) -1 |
67a4f2b7 | 4220 | && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type) |
37e55690 | 4221 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0) |
252b5132 | 4222 | { |
947216bf AM |
4223 | Elf_Internal_Rela rel; |
4224 | bfd_byte *loc; | |
252b5132 RH |
4225 | |
4226 | /* This symbol has an entry in the global offset table. Set it | |
4227 | up. */ | |
4228 | ||
6de2ae4a | 4229 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
ffb2e45b | 4230 | abort (); |
252b5132 | 4231 | |
6de2ae4a L |
4232 | rel.r_offset = (htab->elf.sgot->output_section->vma |
4233 | + htab->elf.sgot->output_offset | |
dc810e39 | 4234 | + (h->got.offset & ~(bfd_vma) 1)); |
252b5132 | 4235 | |
dd5724d5 AM |
4236 | /* If this is a static link, or it is a -Bsymbolic link and the |
4237 | symbol is defined locally or was forced to be local because | |
4238 | of a version file, we just want to emit a RELATIVE reloc. | |
252b5132 RH |
4239 | The entry in the global offset table will already have been |
4240 | initialized in the relocate_section function. */ | |
710ab287 | 4241 | if (h->def_regular |
0018b0a3 L |
4242 | && h->type == STT_GNU_IFUNC) |
4243 | { | |
710ab287 L |
4244 | if (info->shared) |
4245 | { | |
4246 | /* Generate R_386_GLOB_DAT. */ | |
4247 | goto do_glob_dat; | |
4248 | } | |
4249 | else | |
4250 | { | |
4251 | if (!h->pointer_equality_needed) | |
4252 | abort (); | |
4253 | ||
4254 | /* For non-shared object, we can't use .got.plt, which | |
4255 | contains the real function addres if we need pointer | |
4256 | equality. We load the GOT entry with the PLT entry. */ | |
6de2ae4a | 4257 | asection *plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
710ab287 L |
4258 | bfd_put_32 (output_bfd, |
4259 | (plt->output_section->vma | |
4260 | + plt->output_offset + h->plt.offset), | |
6de2ae4a | 4261 | htab->elf.sgot->contents + h->got.offset); |
710ab287 L |
4262 | return TRUE; |
4263 | } | |
0018b0a3 L |
4264 | } |
4265 | else if (info->shared | |
4266 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
dd5724d5 | 4267 | { |
6725bdbf | 4268 | BFD_ASSERT((h->got.offset & 1) != 0); |
dd5724d5 AM |
4269 | rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
4270 | } | |
252b5132 RH |
4271 | else |
4272 | { | |
dd5724d5 | 4273 | BFD_ASSERT((h->got.offset & 1) == 0); |
710ab287 | 4274 | do_glob_dat: |
6725bdbf | 4275 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
6de2ae4a | 4276 | htab->elf.sgot->contents + h->got.offset); |
252b5132 RH |
4277 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); |
4278 | } | |
4279 | ||
6de2ae4a L |
4280 | loc = htab->elf.srelgot->contents; |
4281 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 4282 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
4283 | } |
4284 | ||
f5385ebf | 4285 | if (h->needs_copy) |
252b5132 | 4286 | { |
947216bf AM |
4287 | Elf_Internal_Rela rel; |
4288 | bfd_byte *loc; | |
252b5132 RH |
4289 | |
4290 | /* This symbol needs a copy reloc. Set it up. */ | |
4291 | ||
ffb2e45b AM |
4292 | if (h->dynindx == -1 |
4293 | || (h->root.type != bfd_link_hash_defined | |
4294 | && h->root.type != bfd_link_hash_defweak) | |
4295 | || htab->srelbss == NULL) | |
4296 | abort (); | |
252b5132 RH |
4297 | |
4298 | rel.r_offset = (h->root.u.def.value | |
4299 | + h->root.u.def.section->output_section->vma | |
4300 | + h->root.u.def.section->output_offset); | |
4301 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); | |
947216bf AM |
4302 | loc = htab->srelbss->contents; |
4303 | loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 4304 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
4305 | } |
4306 | ||
c25bc9fc L |
4307 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may |
4308 | be NULL for local symbols. | |
4309 | ||
eac338cf PB |
4310 | On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it |
4311 | is relative to the ".got" section. */ | |
c25bc9fc L |
4312 | if (sym != NULL |
4313 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4314 | || (!htab->is_vxworks && h == htab->elf.hgot))) | |
252b5132 RH |
4315 | sym->st_shndx = SHN_ABS; |
4316 | ||
b34976b6 | 4317 | return TRUE; |
252b5132 RH |
4318 | } |
4319 | ||
c25bc9fc L |
4320 | /* Finish up local dynamic symbol handling. We set the contents of |
4321 | various dynamic sections here. */ | |
4322 | ||
4323 | static bfd_boolean | |
4324 | elf_i386_finish_local_dynamic_symbol (void **slot, void *inf) | |
4325 | { | |
4326 | struct elf_link_hash_entry *h | |
4327 | = (struct elf_link_hash_entry *) *slot; | |
4328 | struct bfd_link_info *info | |
4329 | = (struct bfd_link_info *) inf; | |
4330 | ||
4331 | return elf_i386_finish_dynamic_symbol (info->output_bfd, info, | |
4332 | h, NULL); | |
4333 | } | |
4334 | ||
38701953 AM |
4335 | /* Used to decide how to sort relocs in an optimal manner for the |
4336 | dynamic linker, before writing them out. */ | |
4337 | ||
4338 | static enum elf_reloc_type_class | |
55fd94b0 | 4339 | elf_i386_reloc_type_class (const Elf_Internal_Rela *rela) |
38701953 | 4340 | { |
55fd94b0 | 4341 | switch (ELF32_R_TYPE (rela->r_info)) |
38701953 AM |
4342 | { |
4343 | case R_386_RELATIVE: | |
4344 | return reloc_class_relative; | |
4345 | case R_386_JUMP_SLOT: | |
4346 | return reloc_class_plt; | |
4347 | case R_386_COPY: | |
4348 | return reloc_class_copy; | |
4349 | default: | |
4350 | return reloc_class_normal; | |
4351 | } | |
4352 | } | |
4353 | ||
252b5132 RH |
4354 | /* Finish up the dynamic sections. */ |
4355 | ||
b34976b6 | 4356 | static bfd_boolean |
55fd94b0 AM |
4357 | elf_i386_finish_dynamic_sections (bfd *output_bfd, |
4358 | struct bfd_link_info *info) | |
252b5132 | 4359 | { |
6725bdbf | 4360 | struct elf_i386_link_hash_table *htab; |
252b5132 | 4361 | bfd *dynobj; |
252b5132 RH |
4362 | asection *sdyn; |
4363 | ||
6725bdbf | 4364 | htab = elf_i386_hash_table (info); |
ebe50bae | 4365 | dynobj = htab->elf.dynobj; |
252b5132 RH |
4366 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
4367 | ||
ebe50bae | 4368 | if (htab->elf.dynamic_sections_created) |
252b5132 | 4369 | { |
252b5132 RH |
4370 | Elf32_External_Dyn *dyncon, *dynconend; |
4371 | ||
6de2ae4a | 4372 | if (sdyn == NULL || htab->elf.sgot == NULL) |
ffb2e45b | 4373 | abort (); |
252b5132 RH |
4374 | |
4375 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4376 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4377 | for (; dyncon < dynconend; dyncon++) |
4378 | { | |
4379 | Elf_Internal_Dyn dyn; | |
51b64d56 | 4380 | asection *s; |
252b5132 RH |
4381 | |
4382 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4383 | ||
4384 | switch (dyn.d_tag) | |
4385 | { | |
4386 | default: | |
7a2b07ff NS |
4387 | if (htab->is_vxworks |
4388 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
4389 | break; | |
0ac8d2ca | 4390 | continue; |
252b5132 RH |
4391 | |
4392 | case DT_PLTGOT: | |
6de2ae4a | 4393 | s = htab->elf.sgotplt; |
8c37241b | 4394 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
6725bdbf AM |
4395 | break; |
4396 | ||
252b5132 | 4397 | case DT_JMPREL: |
6de2ae4a | 4398 | s = htab->elf.srelplt; |
6348e046 | 4399 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
252b5132 RH |
4400 | break; |
4401 | ||
4402 | case DT_PLTRELSZ: | |
6de2ae4a | 4403 | s = htab->elf.srelplt; |
eea6121a | 4404 | dyn.d_un.d_val = s->size; |
252b5132 RH |
4405 | break; |
4406 | ||
4407 | case DT_RELSZ: | |
4408 | /* My reading of the SVR4 ABI indicates that the | |
4409 | procedure linkage table relocs (DT_JMPREL) should be | |
4410 | included in the overall relocs (DT_REL). This is | |
4411 | what Solaris does. However, UnixWare can not handle | |
4412 | that case. Therefore, we override the DT_RELSZ entry | |
6348e046 | 4413 | here to make it not include the JMPREL relocs. */ |
6de2ae4a | 4414 | s = htab->elf.srelplt; |
6348e046 AM |
4415 | if (s == NULL) |
4416 | continue; | |
eea6121a | 4417 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
4418 | break; |
4419 | ||
4420 | case DT_REL: | |
4421 | /* We may not be using the standard ELF linker script. | |
4422 | If .rel.plt is the first .rel section, we adjust | |
4423 | DT_REL to not include it. */ | |
6de2ae4a | 4424 | s = htab->elf.srelplt; |
6348e046 AM |
4425 | if (s == NULL) |
4426 | continue; | |
4427 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
4428 | continue; | |
eea6121a | 4429 | dyn.d_un.d_ptr += s->size; |
252b5132 RH |
4430 | break; |
4431 | } | |
0ac8d2ca AM |
4432 | |
4433 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
4434 | } |
4435 | ||
4436 | /* Fill in the first entry in the procedure linkage table. */ | |
6de2ae4a | 4437 | if (htab->elf.splt && htab->elf.splt->size > 0) |
252b5132 RH |
4438 | { |
4439 | if (info->shared) | |
eac338cf | 4440 | { |
6de2ae4a | 4441 | memcpy (htab->elf.splt->contents, elf_i386_pic_plt0_entry, |
eac338cf | 4442 | sizeof (elf_i386_pic_plt0_entry)); |
6de2ae4a | 4443 | memset (htab->elf.splt->contents + sizeof (elf_i386_pic_plt0_entry), |
eac338cf PB |
4444 | htab->plt0_pad_byte, |
4445 | PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry)); | |
4446 | } | |
252b5132 RH |
4447 | else |
4448 | { | |
6de2ae4a | 4449 | memcpy (htab->elf.splt->contents, elf_i386_plt0_entry, |
eac338cf | 4450 | sizeof(elf_i386_plt0_entry)); |
6de2ae4a | 4451 | memset (htab->elf.splt->contents + sizeof (elf_i386_plt0_entry), |
eac338cf PB |
4452 | htab->plt0_pad_byte, |
4453 | PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry)); | |
252b5132 | 4454 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4455 | (htab->elf.sgotplt->output_section->vma |
4456 | + htab->elf.sgotplt->output_offset | |
6725bdbf | 4457 | + 4), |
6de2ae4a | 4458 | htab->elf.splt->contents + 2); |
252b5132 | 4459 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4460 | (htab->elf.sgotplt->output_section->vma |
4461 | + htab->elf.sgotplt->output_offset | |
6725bdbf | 4462 | + 8), |
6de2ae4a | 4463 | htab->elf.splt->contents + 8); |
eac338cf PB |
4464 | |
4465 | if (htab->is_vxworks) | |
4466 | { | |
4467 | Elf_Internal_Rela rel; | |
7325306f | 4468 | |
eac338cf PB |
4469 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4. |
4470 | On IA32 we use REL relocations so the addend goes in | |
4471 | the PLT directly. */ | |
6de2ae4a L |
4472 | rel.r_offset = (htab->elf.splt->output_section->vma |
4473 | + htab->elf.splt->output_offset | |
eac338cf | 4474 | + 2); |
7325306f | 4475 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4476 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
4477 | htab->srelplt2->contents); | |
4478 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
6de2ae4a L |
4479 | rel.r_offset = (htab->elf.splt->output_section->vma |
4480 | + htab->elf.splt->output_offset | |
eac338cf | 4481 | + 8); |
7325306f | 4482 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4483 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
4484 | htab->srelplt2->contents + | |
4485 | sizeof (Elf32_External_Rel)); | |
4486 | } | |
252b5132 RH |
4487 | } |
4488 | ||
4489 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
4490 | really seem like the right value. */ | |
6de2ae4a | 4491 | elf_section_data (htab->elf.splt->output_section) |
6725bdbf | 4492 | ->this_hdr.sh_entsize = 4; |
eac338cf PB |
4493 | |
4494 | /* Correct the .rel.plt.unloaded relocations. */ | |
4495 | if (htab->is_vxworks && !info->shared) | |
4496 | { | |
6de2ae4a | 4497 | int num_plts = (htab->elf.splt->size / PLT_ENTRY_SIZE) - 1; |
4c9b0de6 | 4498 | unsigned char *p; |
eac338cf PB |
4499 | |
4500 | p = htab->srelplt2->contents; | |
4501 | if (info->shared) | |
4502 | p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel); | |
4503 | else | |
4504 | p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel); | |
4505 | ||
4506 | for (; num_plts; num_plts--) | |
4507 | { | |
4508 | Elf_Internal_Rela rel; | |
4509 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 4510 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4511 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
4512 | p += sizeof (Elf32_External_Rel); | |
4513 | ||
4514 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 4515 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf PB |
4516 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
4517 | p += sizeof (Elf32_External_Rel); | |
4518 | } | |
4519 | } | |
252b5132 RH |
4520 | } |
4521 | } | |
4522 | ||
6de2ae4a | 4523 | if (htab->elf.sgotplt) |
252b5132 | 4524 | { |
12d0ee4a | 4525 | /* Fill in the first three entries in the global offset table. */ |
6de2ae4a | 4526 | if (htab->elf.sgotplt->size > 0) |
12d0ee4a AM |
4527 | { |
4528 | bfd_put_32 (output_bfd, | |
55fd94b0 | 4529 | (sdyn == NULL ? 0 |
12d0ee4a | 4530 | : sdyn->output_section->vma + sdyn->output_offset), |
6de2ae4a L |
4531 | htab->elf.sgotplt->contents); |
4532 | bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4); | |
4533 | bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8); | |
12d0ee4a | 4534 | } |
252b5132 | 4535 | |
6de2ae4a | 4536 | elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4; |
12d0ee4a | 4537 | } |
8c37241b | 4538 | |
6de2ae4a L |
4539 | if (htab->elf.sgot && htab->elf.sgot->size > 0) |
4540 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4; | |
8c37241b | 4541 | |
c25bc9fc L |
4542 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
4543 | htab_traverse (htab->loc_hash_table, | |
4544 | elf_i386_finish_local_dynamic_symbol, | |
4545 | info); | |
4546 | ||
b34976b6 | 4547 | return TRUE; |
252b5132 RH |
4548 | } |
4549 | ||
4c45e5c9 JJ |
4550 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4551 | or (bfd_vma) -1 if it should not be included. */ | |
4552 | ||
4553 | static bfd_vma | |
4554 | elf_i386_plt_sym_val (bfd_vma i, const asection *plt, | |
4555 | const arelent *rel ATTRIBUTE_UNUSED) | |
4556 | { | |
4557 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
4558 | } | |
4559 | ||
fdc90cb4 JJ |
4560 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
4561 | ||
4562 | static bfd_boolean | |
4563 | elf_i386_hash_symbol (struct elf_link_hash_entry *h) | |
4564 | { | |
4565 | if (h->plt.offset != (bfd_vma) -1 | |
4566 | && !h->def_regular | |
4567 | && !h->pointer_equality_needed) | |
4568 | return FALSE; | |
4569 | ||
4570 | return _bfd_elf_hash_symbol (h); | |
4571 | } | |
4c45e5c9 | 4572 | |
d8045f23 NC |
4573 | /* Hook called by the linker routine which adds symbols from an object |
4574 | file. */ | |
4575 | ||
4576 | static bfd_boolean | |
4577 | elf_i386_add_symbol_hook (bfd * abfd ATTRIBUTE_UNUSED, | |
4578 | struct bfd_link_info * info ATTRIBUTE_UNUSED, | |
4579 | Elf_Internal_Sym * sym, | |
4580 | const char ** namep ATTRIBUTE_UNUSED, | |
4581 | flagword * flagsp ATTRIBUTE_UNUSED, | |
4582 | asection ** secp ATTRIBUTE_UNUSED, | |
4583 | bfd_vma * valp ATTRIBUTE_UNUSED) | |
4584 | { | |
4585 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
4586 | elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE; | |
4587 | ||
4588 | return TRUE; | |
4589 | } | |
4590 | ||
252b5132 RH |
4591 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vec |
4592 | #define TARGET_LITTLE_NAME "elf32-i386" | |
4593 | #define ELF_ARCH bfd_arch_i386 | |
4594 | #define ELF_MACHINE_CODE EM_386 | |
4595 | #define ELF_MAXPAGESIZE 0x1000 | |
252b5132 RH |
4596 | |
4597 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4598 | #define elf_backend_can_refcount 1 |
252b5132 RH |
4599 | #define elf_backend_want_got_plt 1 |
4600 | #define elf_backend_plt_readonly 1 | |
4601 | #define elf_backend_want_plt_sym 0 | |
4602 | #define elf_backend_got_header_size 12 | |
252b5132 | 4603 | |
8c29f035 AM |
4604 | /* Support RELA for objdump of prelink objects. */ |
4605 | #define elf_info_to_howto elf_i386_info_to_howto_rel | |
dd5724d5 AM |
4606 | #define elf_info_to_howto_rel elf_i386_info_to_howto_rel |
4607 | ||
13ae64f3 | 4608 | #define bfd_elf32_mkobject elf_i386_mkobject |
13ae64f3 | 4609 | |
dd5724d5 AM |
4610 | #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name |
4611 | #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create | |
c25bc9fc | 4612 | #define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free |
dd5724d5 | 4613 | #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup |
13285a1b | 4614 | #define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup |
dd5724d5 AM |
4615 | |
4616 | #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol | |
13285a1b | 4617 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
dd5724d5 | 4618 | #define elf_backend_check_relocs elf_i386_check_relocs |
0ac8d2ca | 4619 | #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol |
6725bdbf | 4620 | #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections |
0ac8d2ca | 4621 | #define elf_backend_fake_sections elf_i386_fake_sections |
dd5724d5 AM |
4622 | #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections |
4623 | #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol | |
4624 | #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook | |
4625 | #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook | |
c5fccbec DJ |
4626 | #define elf_backend_grok_prstatus elf_i386_grok_prstatus |
4627 | #define elf_backend_grok_psinfo elf_i386_grok_psinfo | |
db6751f2 | 4628 | #define elf_backend_reloc_type_class elf_i386_reloc_type_class |
0ac8d2ca AM |
4629 | #define elf_backend_relocate_section elf_i386_relocate_section |
4630 | #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections | |
67a4f2b7 | 4631 | #define elf_backend_always_size_sections elf_i386_always_size_sections |
74541ad4 AM |
4632 | #define elf_backend_omit_section_dynsym \ |
4633 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
4c45e5c9 | 4634 | #define elf_backend_plt_sym_val elf_i386_plt_sym_val |
fdc90cb4 | 4635 | #define elf_backend_hash_symbol elf_i386_hash_symbol |
d8045f23 NC |
4636 | #define elf_backend_add_symbol_hook elf_i386_add_symbol_hook |
4637 | #undef elf_backend_post_process_headers | |
4638 | #define elf_backend_post_process_headers _bfd_elf_set_osabi | |
dd5724d5 | 4639 | |
252b5132 | 4640 | #include "elf32-target.h" |
2bc3c89a AM |
4641 | |
4642 | /* FreeBSD support. */ | |
4643 | ||
4644 | #undef TARGET_LITTLE_SYM | |
4645 | #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec | |
4646 | #undef TARGET_LITTLE_NAME | |
4647 | #define TARGET_LITTLE_NAME "elf32-i386-freebsd" | |
d1036acb L |
4648 | #undef ELF_OSABI |
4649 | #define ELF_OSABI ELFOSABI_FREEBSD | |
2bc3c89a AM |
4650 | |
4651 | /* The kernel recognizes executables as valid only if they carry a | |
4652 | "FreeBSD" label in the ELF header. So we put this label on all | |
4653 | executables and (for simplicity) also all other object files. */ | |
4654 | ||
2bc3c89a | 4655 | static void |
d8045f23 | 4656 | elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info) |
2bc3c89a | 4657 | { |
d8045f23 | 4658 | _bfd_elf_set_osabi (abfd, info); |
2bc3c89a | 4659 | |
2bc3c89a AM |
4660 | #ifdef OLD_FREEBSD_ABI_LABEL |
4661 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
4662 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
caf47ea6 | 4663 | #endif |
2bc3c89a AM |
4664 | } |
4665 | ||
4666 | #undef elf_backend_post_process_headers | |
d8045f23 | 4667 | #define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers |
571fe01f NC |
4668 | #undef elf32_bed |
4669 | #define elf32_bed elf32_i386_fbsd_bed | |
2bc3c89a | 4670 | |
d8045f23 NC |
4671 | #undef elf_backend_add_symbol_hook |
4672 | ||
2bc3c89a | 4673 | #include "elf32-target.h" |
eac338cf PB |
4674 | |
4675 | /* VxWorks support. */ | |
4676 | ||
4677 | #undef TARGET_LITTLE_SYM | |
4678 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec | |
4679 | #undef TARGET_LITTLE_NAME | |
4680 | #define TARGET_LITTLE_NAME "elf32-i386-vxworks" | |
d1036acb | 4681 | #undef ELF_OSABI |
eac338cf PB |
4682 | |
4683 | /* Like elf_i386_link_hash_table_create but with tweaks for VxWorks. */ | |
4684 | ||
4685 | static struct bfd_link_hash_table * | |
4686 | elf_i386_vxworks_link_hash_table_create (bfd *abfd) | |
4687 | { | |
4688 | struct bfd_link_hash_table *ret; | |
4689 | struct elf_i386_link_hash_table *htab; | |
4690 | ||
4691 | ret = elf_i386_link_hash_table_create (abfd); | |
4692 | if (ret) | |
4693 | { | |
4694 | htab = (struct elf_i386_link_hash_table *) ret; | |
4695 | htab->is_vxworks = 1; | |
4696 | htab->plt0_pad_byte = 0x90; | |
4697 | } | |
4698 | ||
4699 | return ret; | |
4700 | } | |
4701 | ||
4702 | ||
13285a1b AM |
4703 | #undef elf_backend_relocs_compatible |
4704 | #undef elf_backend_post_process_headers | |
eac338cf PB |
4705 | #undef bfd_elf32_bfd_link_hash_table_create |
4706 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4707 | elf_i386_vxworks_link_hash_table_create | |
4708 | #undef elf_backend_add_symbol_hook | |
4709 | #define elf_backend_add_symbol_hook \ | |
4710 | elf_vxworks_add_symbol_hook | |
4711 | #undef elf_backend_link_output_symbol_hook | |
4712 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 4713 | elf_vxworks_link_output_symbol_hook |
eac338cf PB |
4714 | #undef elf_backend_emit_relocs |
4715 | #define elf_backend_emit_relocs elf_vxworks_emit_relocs | |
4716 | #undef elf_backend_final_write_processing | |
4717 | #define elf_backend_final_write_processing \ | |
4718 | elf_vxworks_final_write_processing | |
4719 | ||
4720 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
4721 | define it. */ | |
4722 | #undef elf_backend_want_plt_sym | |
4723 | #define elf_backend_want_plt_sym 1 | |
4724 | ||
4725 | #undef elf32_bed | |
4726 | #define elf32_bed elf32_i386_vxworks_bed | |
4727 | ||
4728 | #include "elf32-target.h" |