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 | 580 | /* The i386 linker needs to keep track of the number of relocs that it |
ffb2e45b AM |
581 | decides to copy as dynamic relocs in check_relocs for each symbol. |
582 | This is so that it can later discard them if they are found to be | |
583 | unnecessary. We store the information in a field extending the | |
584 | regular ELF linker hash table. */ | |
252b5132 | 585 | |
ffb2e45b | 586 | struct elf_i386_dyn_relocs |
252b5132 | 587 | { |
ffb2e45b | 588 | struct elf_i386_dyn_relocs *next; |
0c715baa AM |
589 | |
590 | /* The input section of the reloc. */ | |
591 | asection *sec; | |
592 | ||
593 | /* Total number of relocs copied for the input section. */ | |
252b5132 | 594 | bfd_size_type count; |
0c715baa AM |
595 | |
596 | /* Number of pc-relative relocs copied for the input section. */ | |
597 | bfd_size_type pc_count; | |
252b5132 RH |
598 | }; |
599 | ||
600 | /* i386 ELF linker hash entry. */ | |
601 | ||
602 | struct elf_i386_link_hash_entry | |
603 | { | |
ebe50bae | 604 | struct elf_link_hash_entry elf; |
252b5132 | 605 | |
0c715baa | 606 | /* Track dynamic relocs copied for this symbol. */ |
ffb2e45b | 607 | struct elf_i386_dyn_relocs *dyn_relocs; |
13ae64f3 | 608 | |
37e55690 JJ |
609 | #define GOT_UNKNOWN 0 |
610 | #define GOT_NORMAL 1 | |
611 | #define GOT_TLS_GD 2 | |
612 | #define GOT_TLS_IE 4 | |
613 | #define GOT_TLS_IE_POS 5 | |
614 | #define GOT_TLS_IE_NEG 6 | |
615 | #define GOT_TLS_IE_BOTH 7 | |
67a4f2b7 AO |
616 | #define GOT_TLS_GDESC 8 |
617 | #define GOT_TLS_GD_BOTH_P(type) \ | |
618 | ((type) == (GOT_TLS_GD | GOT_TLS_GDESC)) | |
619 | #define GOT_TLS_GD_P(type) \ | |
620 | ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type)) | |
621 | #define GOT_TLS_GDESC_P(type) \ | |
622 | ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type)) | |
623 | #define GOT_TLS_GD_ANY_P(type) \ | |
624 | (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type)) | |
37e55690 | 625 | unsigned char tls_type; |
67a4f2b7 AO |
626 | |
627 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, | |
628 | starting at the end of the jump table. */ | |
629 | bfd_vma tlsdesc_got; | |
13ae64f3 JJ |
630 | }; |
631 | ||
632 | #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent)) | |
633 | ||
634 | struct elf_i386_obj_tdata | |
635 | { | |
636 | struct elf_obj_tdata root; | |
637 | ||
638 | /* tls_type for each local got entry. */ | |
639 | char *local_got_tls_type; | |
67a4f2b7 AO |
640 | |
641 | /* GOTPLT entries for TLS descriptors. */ | |
642 | bfd_vma *local_tlsdesc_gotent; | |
252b5132 RH |
643 | }; |
644 | ||
13ae64f3 JJ |
645 | #define elf_i386_tdata(abfd) \ |
646 | ((struct elf_i386_obj_tdata *) (abfd)->tdata.any) | |
647 | ||
648 | #define elf_i386_local_got_tls_type(abfd) \ | |
649 | (elf_i386_tdata (abfd)->local_got_tls_type) | |
650 | ||
67a4f2b7 AO |
651 | #define elf_i386_local_tlsdesc_gotent(abfd) \ |
652 | (elf_i386_tdata (abfd)->local_tlsdesc_gotent) | |
653 | ||
0ffa91dd NC |
654 | #define is_i386_elf(bfd) \ |
655 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
656 | && elf_tdata (bfd) != NULL \ | |
657 | && elf_object_id (bfd) == I386_ELF_TDATA) | |
658 | ||
b34976b6 | 659 | static bfd_boolean |
55fd94b0 | 660 | elf_i386_mkobject (bfd *abfd) |
13ae64f3 | 661 | { |
0ffa91dd NC |
662 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata), |
663 | I386_ELF_TDATA); | |
13ae64f3 | 664 | } |
cedb70c5 | 665 | |
252b5132 RH |
666 | /* i386 ELF linker hash table. */ |
667 | ||
668 | struct elf_i386_link_hash_table | |
669 | { | |
ebe50bae | 670 | struct elf_link_hash_table elf; |
252b5132 | 671 | |
6725bdbf | 672 | /* Short-cuts to get to dynamic linker sections. */ |
6725bdbf AM |
673 | asection *sdynbss; |
674 | asection *srelbss; | |
9635fe29 | 675 | |
eac338cf PB |
676 | /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */ |
677 | asection *srelplt2; | |
678 | ||
eac338cf PB |
679 | /* True if the target system is VxWorks. */ |
680 | int is_vxworks; | |
ec338859 | 681 | |
eac338cf PB |
682 | /* Value used to fill the last word of the first plt entry. */ |
683 | bfd_byte plt0_pad_byte; | |
9635fe29 | 684 | |
5ae0bfb6 RS |
685 | /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */ |
686 | bfd_vma next_tls_desc_index; | |
687 | ||
13ae64f3 JJ |
688 | union { |
689 | bfd_signed_vma refcount; | |
690 | bfd_vma offset; | |
691 | } tls_ldm_got; | |
692 | ||
67a4f2b7 AO |
693 | /* The amount of space used by the reserved portion of the sgotplt |
694 | section, plus whatever space is used by the jump slots. */ | |
695 | bfd_vma sgotplt_jump_table_size; | |
696 | ||
ec338859 AM |
697 | /* Small local sym to section mapping cache. */ |
698 | struct sym_sec_cache sym_sec; | |
9f03412a AO |
699 | |
700 | /* _TLS_MODULE_BASE_ symbol. */ | |
701 | struct bfd_link_hash_entry *tls_module_base; | |
c25bc9fc L |
702 | |
703 | /* Used by local STT_GNU_IFUNC symbols. */ | |
704 | htab_t loc_hash_table; | |
705 | void *loc_hash_memory; | |
6725bdbf | 706 | }; |
252b5132 RH |
707 | |
708 | /* Get the i386 ELF linker hash table from a link_info structure. */ | |
709 | ||
710 | #define elf_i386_hash_table(p) \ | |
711 | ((struct elf_i386_link_hash_table *) ((p)->hash)) | |
712 | ||
67a4f2b7 | 713 | #define elf_i386_compute_jump_table_size(htab) \ |
5ae0bfb6 | 714 | ((htab)->next_tls_desc_index * 4) |
67a4f2b7 | 715 | |
252b5132 RH |
716 | /* Create an entry in an i386 ELF linker hash table. */ |
717 | ||
718 | static struct bfd_hash_entry * | |
eb4ff4d6 L |
719 | elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry, |
720 | struct bfd_hash_table *table, | |
721 | const char *string) | |
252b5132 | 722 | { |
252b5132 RH |
723 | /* Allocate the structure if it has not already been allocated by a |
724 | subclass. */ | |
ebe50bae AM |
725 | if (entry == NULL) |
726 | { | |
727 | entry = bfd_hash_allocate (table, | |
728 | sizeof (struct elf_i386_link_hash_entry)); | |
729 | if (entry == NULL) | |
730 | return entry; | |
731 | } | |
252b5132 RH |
732 | |
733 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
734 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
735 | if (entry != NULL) | |
252b5132 | 736 | { |
ebe50bae AM |
737 | struct elf_i386_link_hash_entry *eh; |
738 | ||
739 | eh = (struct elf_i386_link_hash_entry *) entry; | |
740 | eh->dyn_relocs = NULL; | |
13ae64f3 | 741 | eh->tls_type = GOT_UNKNOWN; |
67a4f2b7 | 742 | eh->tlsdesc_got = (bfd_vma) -1; |
252b5132 RH |
743 | } |
744 | ||
ebe50bae | 745 | return entry; |
252b5132 RH |
746 | } |
747 | ||
c25bc9fc L |
748 | static hashval_t |
749 | elf_i386_local_hash (int id, int r_sym) | |
750 | { | |
751 | return ((((id & 0xff) << 24) | ((id & 0xff00) << 8)) | |
752 | ^ r_sym ^ (id >> 16)); | |
753 | } | |
754 | ||
755 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry | |
756 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
757 | as global symbol. We reuse indx and dynstr_index for local symbol | |
758 | hash since they aren't used by global symbols in this backend. */ | |
759 | ||
760 | static hashval_t | |
761 | elf_i386_local_htab_hash (const void *ptr) | |
762 | { | |
763 | struct elf_link_hash_entry *h | |
764 | = (struct elf_link_hash_entry *) ptr; | |
765 | return elf_i386_local_hash (h->indx, h->dynstr_index); | |
766 | } | |
767 | ||
768 | /* Compare local hash entries. */ | |
769 | ||
770 | static int | |
771 | elf_i386_local_htab_eq (const void *ptr1, const void *ptr2) | |
772 | { | |
773 | struct elf_link_hash_entry *h1 | |
774 | = (struct elf_link_hash_entry *) ptr1; | |
775 | struct elf_link_hash_entry *h2 | |
776 | = (struct elf_link_hash_entry *) ptr2; | |
777 | ||
778 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
779 | } | |
780 | ||
781 | /* Find and/or create a hash entry for local symbol. */ | |
782 | ||
783 | static struct elf_link_hash_entry * | |
784 | elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab, | |
785 | bfd *abfd, const Elf_Internal_Rela *rel, | |
786 | bfd_boolean create) | |
787 | { | |
788 | struct elf_i386_link_hash_entry e, *ret; | |
789 | asection *sec = abfd->sections; | |
790 | hashval_t h = elf_i386_local_hash (sec->id, | |
791 | ELF32_R_SYM (rel->r_info)); | |
792 | void **slot; | |
793 | ||
794 | e.elf.indx = sec->id; | |
795 | e.elf.dynstr_index = ELF32_R_SYM (rel->r_info); | |
796 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
797 | create ? INSERT : NO_INSERT); | |
798 | ||
799 | if (!slot) | |
800 | return NULL; | |
801 | ||
802 | if (*slot) | |
803 | { | |
804 | ret = (struct elf_i386_link_hash_entry *) *slot; | |
805 | return &ret->elf; | |
806 | } | |
807 | ||
808 | ret = (struct elf_i386_link_hash_entry *) | |
809 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
810 | sizeof (struct elf_i386_link_hash_entry)); | |
811 | if (ret) | |
812 | { | |
813 | memset (ret, 0, sizeof (*ret)); | |
814 | ret->elf.indx = sec->id; | |
815 | ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info); | |
816 | ret->elf.dynindx = -1; | |
817 | ret->elf.plt.offset = (bfd_vma) -1; | |
818 | ret->elf.got.offset = (bfd_vma) -1; | |
819 | *slot = ret; | |
820 | } | |
821 | return &ret->elf; | |
822 | } | |
823 | ||
252b5132 RH |
824 | /* Create an i386 ELF linker hash table. */ |
825 | ||
826 | static struct bfd_link_hash_table * | |
55fd94b0 | 827 | elf_i386_link_hash_table_create (bfd *abfd) |
252b5132 RH |
828 | { |
829 | struct elf_i386_link_hash_table *ret; | |
dc810e39 | 830 | bfd_size_type amt = sizeof (struct elf_i386_link_hash_table); |
252b5132 | 831 | |
55fd94b0 | 832 | ret = bfd_malloc (amt); |
ebe50bae | 833 | if (ret == NULL) |
252b5132 RH |
834 | return NULL; |
835 | ||
eb4ff4d6 L |
836 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
837 | elf_i386_link_hash_newfunc, | |
66eb6687 | 838 | sizeof (struct elf_i386_link_hash_entry))) |
252b5132 | 839 | { |
e2d34d7d | 840 | free (ret); |
252b5132 RH |
841 | return NULL; |
842 | } | |
843 | ||
6725bdbf AM |
844 | ret->sdynbss = NULL; |
845 | ret->srelbss = NULL; | |
7a624474 | 846 | ret->tls_ldm_got.refcount = 0; |
5ae0bfb6 | 847 | ret->next_tls_desc_index = 0; |
67a4f2b7 | 848 | ret->sgotplt_jump_table_size = 0; |
ec338859 | 849 | ret->sym_sec.abfd = NULL; |
eac338cf PB |
850 | ret->is_vxworks = 0; |
851 | ret->srelplt2 = NULL; | |
eac338cf | 852 | ret->plt0_pad_byte = 0; |
9f03412a | 853 | ret->tls_module_base = NULL; |
6725bdbf | 854 | |
c25bc9fc L |
855 | ret->loc_hash_table = htab_try_create (1024, |
856 | elf_i386_local_htab_hash, | |
857 | elf_i386_local_htab_eq, | |
858 | NULL); | |
859 | ret->loc_hash_memory = objalloc_create (); | |
860 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
861 | { | |
862 | free (ret); | |
863 | return NULL; | |
864 | } | |
865 | ||
ebe50bae | 866 | return &ret->elf.root; |
252b5132 RH |
867 | } |
868 | ||
c25bc9fc L |
869 | /* Destroy an i386 ELF linker hash table. */ |
870 | ||
871 | static void | |
872 | elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash) | |
873 | { | |
874 | struct elf_i386_link_hash_table *htab | |
875 | = (struct elf_i386_link_hash_table *) hash; | |
876 | ||
877 | if (htab->loc_hash_table) | |
878 | htab_delete (htab->loc_hash_table); | |
879 | if (htab->loc_hash_memory) | |
880 | objalloc_free ((struct objalloc *) htab->loc_hash_memory); | |
881 | _bfd_generic_link_hash_table_free (hash); | |
882 | } | |
883 | ||
6725bdbf AM |
884 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and |
885 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
886 | hash table. */ | |
887 | ||
b34976b6 | 888 | static bfd_boolean |
55fd94b0 | 889 | elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
6725bdbf AM |
890 | { |
891 | struct elf_i386_link_hash_table *htab; | |
892 | ||
6725bdbf | 893 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 894 | return FALSE; |
6725bdbf | 895 | |
6de2ae4a | 896 | htab = elf_i386_hash_table (info); |
6725bdbf AM |
897 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
898 | if (!info->shared) | |
899 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
900 | ||
6de2ae4a | 901 | if (!htab->sdynbss |
6725bdbf AM |
902 | || (!info->shared && !htab->srelbss)) |
903 | abort (); | |
904 | ||
711de32c | 905 | if (htab->is_vxworks |
6de2ae4a L |
906 | && !elf_vxworks_create_dynamic_sections (dynobj, info, |
907 | &htab->srelplt2)) | |
711de32c | 908 | return FALSE; |
eac338cf | 909 | |
b34976b6 | 910 | return TRUE; |
6725bdbf AM |
911 | } |
912 | ||
ebe50bae AM |
913 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
914 | ||
51b64d56 | 915 | static void |
fcfa13d2 | 916 | elf_i386_copy_indirect_symbol (struct bfd_link_info *info, |
55fd94b0 AM |
917 | struct elf_link_hash_entry *dir, |
918 | struct elf_link_hash_entry *ind) | |
ebe50bae AM |
919 | { |
920 | struct elf_i386_link_hash_entry *edir, *eind; | |
921 | ||
922 | edir = (struct elf_i386_link_hash_entry *) dir; | |
923 | eind = (struct elf_i386_link_hash_entry *) ind; | |
924 | ||
bbd7ec4a | 925 | if (eind->dyn_relocs != NULL) |
ebe50bae | 926 | { |
bbd7ec4a AM |
927 | if (edir->dyn_relocs != NULL) |
928 | { | |
929 | struct elf_i386_dyn_relocs **pp; | |
930 | struct elf_i386_dyn_relocs *p; | |
931 | ||
fcfa13d2 | 932 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
933 | list. Merge any entries against the same section. */ |
934 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
935 | { | |
936 | struct elf_i386_dyn_relocs *q; | |
937 | ||
938 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
939 | if (q->sec == p->sec) | |
940 | { | |
941 | q->pc_count += p->pc_count; | |
942 | q->count += p->count; | |
943 | *pp = p->next; | |
944 | break; | |
945 | } | |
946 | if (q == NULL) | |
947 | pp = &p->next; | |
948 | } | |
949 | *pp = edir->dyn_relocs; | |
950 | } | |
951 | ||
ebe50bae AM |
952 | edir->dyn_relocs = eind->dyn_relocs; |
953 | eind->dyn_relocs = NULL; | |
954 | } | |
ebe50bae | 955 | |
cd67d266 JJ |
956 | if (ind->root.type == bfd_link_hash_indirect |
957 | && dir->got.refcount <= 0) | |
958 | { | |
959 | edir->tls_type = eind->tls_type; | |
960 | eind->tls_type = GOT_UNKNOWN; | |
961 | } | |
81848ca0 AM |
962 | |
963 | if (ELIMINATE_COPY_RELOCS | |
964 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
965 | && dir->dynamic_adjusted) |
966 | { | |
967 | /* If called to transfer flags for a weakdef during processing | |
968 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
969 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
970 | dir->ref_dynamic |= ind->ref_dynamic; | |
971 | dir->ref_regular |= ind->ref_regular; | |
972 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
973 | dir->needs_plt |= ind->needs_plt; | |
974 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
975 | } | |
81848ca0 | 976 | else |
fcfa13d2 | 977 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
ebe50bae AM |
978 | } |
979 | ||
142411ca L |
980 | typedef union |
981 | { | |
982 | unsigned char c[2]; | |
983 | uint16_t i; | |
984 | } | |
985 | i386_opcode16; | |
986 | ||
987 | /* Return TRUE if the TLS access code sequence support transition | |
988 | from R_TYPE. */ | |
989 | ||
990 | static bfd_boolean | |
991 | elf_i386_check_tls_transition (bfd *abfd, asection *sec, | |
992 | bfd_byte *contents, | |
993 | Elf_Internal_Shdr *symtab_hdr, | |
994 | struct elf_link_hash_entry **sym_hashes, | |
995 | unsigned int r_type, | |
996 | const Elf_Internal_Rela *rel, | |
997 | const Elf_Internal_Rela *relend) | |
13ae64f3 | 998 | { |
142411ca L |
999 | unsigned int val, type; |
1000 | unsigned long r_symndx; | |
1001 | struct elf_link_hash_entry *h; | |
1002 | bfd_vma offset; | |
1003 | ||
1004 | /* Get the section contents. */ | |
1005 | if (contents == NULL) | |
1006 | { | |
1007 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1008 | contents = elf_section_data (sec)->this_hdr.contents; | |
1009 | else | |
1010 | { | |
1011 | /* FIXME: How to better handle error condition? */ | |
1012 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1013 | return FALSE; | |
13ae64f3 | 1014 | |
142411ca L |
1015 | /* Cache the section contents for elf_link_input_bfd. */ |
1016 | elf_section_data (sec)->this_hdr.contents = contents; | |
1017 | } | |
1018 | } | |
1019 | ||
1020 | offset = rel->r_offset; | |
13ae64f3 | 1021 | switch (r_type) |
142411ca L |
1022 | { |
1023 | case R_386_TLS_GD: | |
1024 | case R_386_TLS_LDM: | |
1025 | if (offset < 2 || (rel + 1) >= relend) | |
1026 | return FALSE; | |
1027 | ||
1028 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1029 | if (r_type == R_386_TLS_GD) | |
1030 | { | |
09e8c3bf | 1031 | /* Check transition from GD access model. Only |
142411ca L |
1032 | leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr |
1033 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop | |
1034 | can transit to different access model. */ | |
1035 | if ((offset + 10) > sec->size || | |
1036 | (type != 0x8d && type != 0x04)) | |
1037 | return FALSE; | |
1038 | ||
1039 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1040 | if (type == 0x04) | |
1041 | { | |
1042 | /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */ | |
1043 | if (offset < 3) | |
1044 | return FALSE; | |
1045 | ||
1046 | if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d) | |
1047 | return FALSE; | |
1048 | ||
1049 | if ((val & 0xc7) != 0x05 || val == (4 << 3)) | |
1050 | return FALSE; | |
1051 | } | |
1052 | else | |
1053 | { | |
1054 | /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */ | |
1055 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
1056 | return FALSE; | |
1057 | ||
1058 | if (bfd_get_8 (abfd, contents + offset + 9) != 0x90) | |
1059 | return FALSE; | |
1060 | } | |
1061 | } | |
1062 | else | |
1063 | { | |
1064 | /* Check transition from LD access model. Only | |
1065 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr | |
1066 | can transit to different access model. */ | |
1067 | if (type != 0x8d || (offset + 9) > sec->size) | |
1068 | return FALSE; | |
1069 | ||
1070 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1071 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
1072 | return FALSE; | |
1073 | } | |
1074 | ||
1075 | if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8) | |
1076 | return FALSE; | |
1077 | ||
1078 | r_symndx = ELF32_R_SYM (rel[1].r_info); | |
1079 | if (r_symndx < symtab_hdr->sh_info) | |
1080 | return FALSE; | |
1081 | ||
1082 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
c4fb387b L |
1083 | /* Use strncmp to check ___tls_get_addr since ___tls_get_addr |
1084 | may be versioned. */ | |
142411ca L |
1085 | return (h != NULL |
1086 | && h->root.root.string != NULL | |
1087 | && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32 | |
1088 | || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32) | |
c4fb387b L |
1089 | && (strncmp (h->root.root.string, "___tls_get_addr", |
1090 | 15) == 0)); | |
142411ca L |
1091 | |
1092 | case R_386_TLS_IE: | |
1093 | /* Check transition from IE access model: | |
1094 | movl foo@indntpoff(%rip), %eax | |
1095 | movl foo@indntpoff(%rip), %reg | |
1096 | addl foo@indntpoff(%rip), %reg | |
1097 | */ | |
1098 | ||
1099 | if (offset < 1 || (offset + 4) > sec->size) | |
1100 | return FALSE; | |
1101 | ||
1102 | /* Check "movl foo@tpoff(%rip), %eax" first. */ | |
1103 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1104 | if (val == 0xa1) | |
1105 | return TRUE; | |
1106 | ||
1107 | if (offset < 2) | |
1108 | return FALSE; | |
1109 | ||
1110 | /* Check movl|addl foo@tpoff(%rip), %reg. */ | |
1111 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1112 | return ((type == 0x8b || type == 0x03) | |
1113 | && (val & 0xc7) == 0x05); | |
1114 | ||
1115 | case R_386_TLS_GOTIE: | |
1116 | case R_386_TLS_IE_32: | |
1117 | /* Check transition from {IE_32,GOTIE} access model: | |
1118 | subl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1119 | movl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1120 | addl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1121 | */ | |
1122 | ||
1123 | if (offset < 2 || (offset + 4) > sec->size) | |
1124 | return FALSE; | |
1125 | ||
1126 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1127 | if ((val & 0xc0) != 0x80 || (val & 7) == 4) | |
1128 | return FALSE; | |
1129 | ||
1130 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1131 | return type == 0x8b || type == 0x2b || type == 0x03; | |
1132 | ||
1133 | case R_386_TLS_GOTDESC: | |
1134 | /* Check transition from GDesc access model: | |
1135 | leal x@tlsdesc(%ebx), %eax | |
1136 | ||
1137 | Make sure it's a leal adding ebx to a 32-bit offset | |
1138 | into any register, although it's probably almost always | |
1139 | going to be eax. */ | |
1140 | ||
1141 | if (offset < 2 || (offset + 4) > sec->size) | |
1142 | return FALSE; | |
1143 | ||
1144 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1145 | return FALSE; | |
1146 | ||
1147 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1148 | return (val & 0xc7) == 0x83; | |
1149 | ||
1150 | case R_386_TLS_DESC_CALL: | |
1151 | /* Check transition from GDesc access model: | |
1152 | call *x@tlsdesc(%rax) | |
1153 | */ | |
1154 | if (offset + 2 <= sec->size) | |
1155 | { | |
1156 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
1157 | static i386_opcode16 call = { { 0xff, 0x10 } }; | |
1158 | return bfd_get_16 (abfd, contents + offset) == call.i; | |
1159 | } | |
1160 | ||
1161 | return FALSE; | |
1162 | ||
1163 | default: | |
1164 | abort (); | |
1165 | } | |
1166 | } | |
1167 | ||
1168 | /* Return TRUE if the TLS access transition is OK or no transition | |
1169 | will be performed. Update R_TYPE if there is a transition. */ | |
1170 | ||
1171 | static bfd_boolean | |
1172 | elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd, | |
1173 | asection *sec, bfd_byte *contents, | |
1174 | Elf_Internal_Shdr *symtab_hdr, | |
1175 | struct elf_link_hash_entry **sym_hashes, | |
1176 | unsigned int *r_type, int tls_type, | |
1177 | const Elf_Internal_Rela *rel, | |
1178 | const Elf_Internal_Rela *relend, | |
1179 | struct elf_link_hash_entry *h) | |
1180 | { | |
1181 | unsigned int from_type = *r_type; | |
1182 | unsigned int to_type = from_type; | |
1183 | bfd_boolean check = TRUE; | |
1184 | ||
1185 | switch (from_type) | |
13ae64f3 JJ |
1186 | { |
1187 | case R_386_TLS_GD: | |
67a4f2b7 AO |
1188 | case R_386_TLS_GOTDESC: |
1189 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 1190 | case R_386_TLS_IE_32: |
37e55690 JJ |
1191 | case R_386_TLS_IE: |
1192 | case R_386_TLS_GOTIE: | |
142411ca L |
1193 | if (!info->shared) |
1194 | { | |
1195 | if (h == NULL) | |
1196 | to_type = R_386_TLS_LE_32; | |
1197 | else if (from_type != R_386_TLS_IE | |
1198 | && from_type != R_386_TLS_GOTIE) | |
1199 | to_type = R_386_TLS_IE_32; | |
1200 | } | |
1201 | ||
1202 | /* When we are called from elf_i386_relocate_section, CONTENTS | |
1203 | isn't NULL and there may be additional transitions based on | |
1204 | TLS_TYPE. */ | |
1205 | if (contents != NULL) | |
1206 | { | |
1207 | unsigned int new_to_type = to_type; | |
1208 | ||
1209 | if (!info->shared | |
1210 | && h != NULL | |
1211 | && h->dynindx == -1 | |
1212 | && (tls_type & GOT_TLS_IE)) | |
1213 | new_to_type = R_386_TLS_LE_32; | |
1214 | ||
1215 | if (to_type == R_386_TLS_GD | |
1216 | || to_type == R_386_TLS_GOTDESC | |
1217 | || to_type == R_386_TLS_DESC_CALL) | |
1218 | { | |
1219 | if (tls_type == GOT_TLS_IE_POS) | |
1220 | new_to_type = R_386_TLS_GOTIE; | |
1221 | else if (tls_type & GOT_TLS_IE) | |
1222 | new_to_type = R_386_TLS_IE_32; | |
1223 | } | |
1224 | ||
1225 | /* We checked the transition before when we were called from | |
1226 | elf_i386_check_relocs. We only want to check the new | |
1227 | transition which hasn't been checked before. */ | |
1228 | check = new_to_type != to_type && from_type == to_type; | |
1229 | to_type = new_to_type; | |
1230 | } | |
1231 | ||
1232 | break; | |
1233 | ||
13ae64f3 | 1234 | case R_386_TLS_LDM: |
142411ca L |
1235 | if (!info->shared) |
1236 | to_type = R_386_TLS_LE_32; | |
1237 | break; | |
1238 | ||
1239 | default: | |
1240 | return TRUE; | |
1241 | } | |
1242 | ||
1243 | /* Return TRUE if there is no transition. */ | |
1244 | if (from_type == to_type) | |
1245 | return TRUE; | |
1246 | ||
1247 | /* Check if the transition can be performed. */ | |
1248 | if (check | |
1249 | && ! elf_i386_check_tls_transition (abfd, sec, contents, | |
1250 | symtab_hdr, sym_hashes, | |
1251 | from_type, rel, relend)) | |
1252 | { | |
2f629d23 | 1253 | reloc_howto_type *from, *to; |
142411ca L |
1254 | |
1255 | from = elf_i386_rtype_to_howto (abfd, from_type); | |
1256 | to = elf_i386_rtype_to_howto (abfd, to_type); | |
1257 | ||
1258 | (*_bfd_error_handler) | |
1259 | (_("%B: TLS transition from %s to %s against `%s' at 0x%lx " | |
1260 | "in section `%A' failed"), | |
1261 | abfd, sec, from->name, to->name, | |
1262 | h ? h->root.root.string : "a local symbol", | |
1263 | (unsigned long) rel->r_offset); | |
1264 | bfd_set_error (bfd_error_bad_value); | |
1265 | return FALSE; | |
13ae64f3 JJ |
1266 | } |
1267 | ||
142411ca L |
1268 | *r_type = to_type; |
1269 | return TRUE; | |
13ae64f3 JJ |
1270 | } |
1271 | ||
252b5132 | 1272 | /* Look through the relocs for a section during the first phase, and |
0ac8d2ca AM |
1273 | calculate needed space in the global offset table, procedure linkage |
1274 | table, and dynamic reloc sections. */ | |
252b5132 | 1275 | |
b34976b6 | 1276 | static bfd_boolean |
55fd94b0 AM |
1277 | elf_i386_check_relocs (bfd *abfd, |
1278 | struct bfd_link_info *info, | |
1279 | asection *sec, | |
1280 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1281 | { |
6725bdbf | 1282 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1283 | Elf_Internal_Shdr *symtab_hdr; |
1284 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
1285 | const Elf_Internal_Rela *rel; |
1286 | const Elf_Internal_Rela *rel_end; | |
252b5132 | 1287 | asection *sreloc; |
c25bc9fc | 1288 | Elf_Internal_Sym *isymbuf; |
252b5132 | 1289 | |
1049f94e | 1290 | if (info->relocatable) |
b34976b6 | 1291 | return TRUE; |
252b5132 | 1292 | |
0ffa91dd NC |
1293 | BFD_ASSERT (is_i386_elf (abfd)); |
1294 | ||
6725bdbf | 1295 | htab = elf_i386_hash_table (info); |
0ffa91dd | 1296 | symtab_hdr = &elf_symtab_hdr (abfd); |
c25bc9fc | 1297 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
252b5132 | 1298 | sym_hashes = elf_sym_hashes (abfd); |
252b5132 | 1299 | |
252b5132 RH |
1300 | sreloc = NULL; |
1301 | ||
1302 | rel_end = relocs + sec->reloc_count; | |
1303 | for (rel = relocs; rel < rel_end; rel++) | |
1304 | { | |
13ae64f3 | 1305 | unsigned int r_type; |
252b5132 RH |
1306 | unsigned long r_symndx; |
1307 | struct elf_link_hash_entry *h; | |
1308 | ||
1309 | r_symndx = ELF32_R_SYM (rel->r_info); | |
13ae64f3 | 1310 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 1311 | |
d9bc7a44 | 1312 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
f5f31454 | 1313 | { |
d003868e AM |
1314 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
1315 | abfd, | |
8f615d07 | 1316 | r_symndx); |
b34976b6 | 1317 | return FALSE; |
f5f31454 L |
1318 | } |
1319 | ||
252b5132 | 1320 | if (r_symndx < symtab_hdr->sh_info) |
c25bc9fc L |
1321 | { |
1322 | /* A local symbol. */ | |
1323 | Elf_Internal_Sym *isym; | |
1324 | ||
1325 | /* Read this BFD's local symbols. */ | |
1326 | if (isymbuf == NULL) | |
1327 | { | |
1328 | if (isymbuf == NULL) | |
1329 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
1330 | symtab_hdr->sh_info, 0, | |
1331 | NULL, NULL, NULL); | |
1332 | if (isymbuf == NULL) | |
1333 | return FALSE; | |
1334 | } | |
1335 | ||
1336 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
1337 | isym = isymbuf + r_symndx; | |
1338 | if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
1339 | { | |
1340 | h = elf_i386_get_local_sym_hash (htab, abfd, rel, | |
1341 | TRUE); | |
1342 | if (h == NULL) | |
1343 | return FALSE; | |
1344 | ||
1345 | /* Fake a STT_GNU_IFUNC symbol. */ | |
1346 | h->type = STT_GNU_IFUNC; | |
1347 | h->def_regular = 1; | |
1348 | h->ref_regular = 1; | |
1349 | h->forced_local = 1; | |
1350 | h->root.type = bfd_link_hash_defined; | |
1351 | } | |
1352 | else | |
1353 | h = NULL; | |
1354 | } | |
252b5132 | 1355 | else |
71cb9464 L |
1356 | { |
1357 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1358 | while (h->root.type == bfd_link_hash_indirect | |
1359 | || h->root.type == bfd_link_hash_warning) | |
1360 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c25bc9fc | 1361 | } |
cbe950e9 | 1362 | |
c25bc9fc L |
1363 | if (h != NULL) |
1364 | { | |
cbe950e9 L |
1365 | /* Create the ifunc sections for static executables. If we |
1366 | never see an indirect function symbol nor we are building | |
1367 | a static executable, those sections will be empty and | |
1368 | won't appear in output. */ | |
1369 | switch (r_type) | |
1370 | { | |
1371 | default: | |
1372 | break; | |
1373 | ||
1374 | case R_386_32: | |
1375 | case R_386_PC32: | |
1376 | case R_386_PLT32: | |
1377 | case R_386_GOT32: | |
1378 | case R_386_GOTOFF: | |
6de2ae4a L |
1379 | if (!_bfd_elf_create_ifunc_sections (abfd, info)) |
1380 | return FALSE; | |
cbe950e9 L |
1381 | break; |
1382 | } | |
1383 | ||
1384 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle | |
1385 | it here if it is defined in a non-shared object. */ | |
1386 | if (h->type == STT_GNU_IFUNC | |
1387 | && h->def_regular) | |
1388 | { | |
1389 | /* It is referenced by a non-shared object. */ | |
1390 | h->ref_regular = 1; | |
1391 | ||
1392 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
1393 | h->plt.refcount += 1; | |
1394 | ||
1395 | /* STT_GNU_IFUNC needs dynamic sections. */ | |
1396 | if (htab->elf.dynobj == NULL) | |
1397 | htab->elf.dynobj = abfd; | |
1398 | ||
1399 | switch (r_type) | |
1400 | { | |
048cbda4 L |
1401 | default: |
1402 | (*_bfd_error_handler) | |
1403 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
1404 | "symbol `%s' isn't handled by %s"), abfd, | |
1405 | elf_howto_table[r_type].name, | |
8b7e2992 L |
1406 | (h->root.root.string |
1407 | ? h->root.root.string : "a local symbol"), | |
048cbda4 L |
1408 | __FUNCTION__); |
1409 | bfd_set_error (bfd_error_bad_value); | |
1410 | return FALSE; | |
cbe950e9 L |
1411 | |
1412 | case R_386_32: | |
710ab287 L |
1413 | h->non_got_ref = 1; |
1414 | h->pointer_equality_needed = 1; | |
1415 | if (info->shared) | |
1416 | { | |
1417 | struct elf_i386_dyn_relocs *p; | |
1418 | struct elf_i386_dyn_relocs **head; | |
1419 | ||
1420 | /* We must copy these reloc types into the | |
1421 | output file. Create a reloc section in | |
1422 | dynobj and make room for this reloc. */ | |
1423 | if (sreloc == NULL) | |
1424 | { | |
1425 | if (htab->elf.dynobj == NULL) | |
1426 | htab->elf.dynobj = abfd; | |
1427 | ||
1428 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
1429 | (sec, htab->elf.dynobj, 2, abfd, FALSE); | |
1430 | ||
1431 | if (sreloc == NULL) | |
1432 | return FALSE; | |
1433 | } | |
1434 | ||
1435 | head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs; | |
1436 | p = *head; | |
1437 | if (p == NULL || p->sec != sec) | |
1438 | { | |
1439 | bfd_size_type amt = sizeof *p; | |
1440 | p = bfd_alloc (htab->elf.dynobj, amt); | |
1441 | if (p == NULL) | |
1442 | return FALSE; | |
1443 | p->next = *head; | |
1444 | *head = p; | |
1445 | p->sec = sec; | |
1446 | p->count = 0; | |
1447 | p->pc_count = 0; | |
1448 | } | |
1449 | p->count += 1; | |
1450 | } | |
1451 | break; | |
1452 | ||
cbe950e9 L |
1453 | case R_386_PC32: |
1454 | h->non_got_ref = 1; | |
cbe950e9 L |
1455 | break; |
1456 | ||
1457 | case R_386_PLT32: | |
1458 | break; | |
1459 | ||
1460 | case R_386_GOT32: | |
1461 | case R_386_GOTOFF: | |
7afd84dc | 1462 | h->got.refcount += 1; |
6de2ae4a L |
1463 | if (htab->elf.sgot == NULL |
1464 | && !_bfd_elf_create_got_section (htab->elf.dynobj, | |
cbe950e9 L |
1465 | info)) |
1466 | return FALSE; | |
1467 | break; | |
1468 | } | |
1469 | ||
1470 | continue; | |
1471 | } | |
71cb9464 | 1472 | } |
252b5132 | 1473 | |
142411ca L |
1474 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1475 | symtab_hdr, sym_hashes, | |
1476 | &r_type, GOT_UNKNOWN, | |
1477 | rel, rel_end, h)) | |
1478 | return FALSE; | |
13ae64f3 JJ |
1479 | |
1480 | switch (r_type) | |
252b5132 | 1481 | { |
37e55690 JJ |
1482 | case R_386_TLS_LDM: |
1483 | htab->tls_ldm_got.refcount += 1; | |
1484 | goto create_got; | |
1485 | ||
1486 | case R_386_PLT32: | |
1487 | /* This symbol requires a procedure linkage table entry. We | |
1488 | actually build the entry in adjust_dynamic_symbol, | |
1489 | because this might be a case of linking PIC code which is | |
1490 | never referenced by a dynamic object, in which case we | |
1491 | don't need to generate a procedure linkage table entry | |
1492 | after all. */ | |
1493 | ||
1494 | /* If this is a local symbol, we resolve it directly without | |
1495 | creating a procedure linkage table entry. */ | |
1496 | if (h == NULL) | |
1497 | continue; | |
1498 | ||
f5385ebf | 1499 | h->needs_plt = 1; |
37e55690 JJ |
1500 | h->plt.refcount += 1; |
1501 | break; | |
1502 | ||
13ae64f3 | 1503 | case R_386_TLS_IE_32: |
37e55690 JJ |
1504 | case R_386_TLS_IE: |
1505 | case R_386_TLS_GOTIE: | |
13ae64f3 JJ |
1506 | if (info->shared) |
1507 | info->flags |= DF_STATIC_TLS; | |
37e55690 JJ |
1508 | /* Fall through */ |
1509 | ||
252b5132 | 1510 | case R_386_GOT32: |
13ae64f3 | 1511 | case R_386_TLS_GD: |
67a4f2b7 AO |
1512 | case R_386_TLS_GOTDESC: |
1513 | case R_386_TLS_DESC_CALL: | |
252b5132 | 1514 | /* This symbol requires a global offset table entry. */ |
13ae64f3 JJ |
1515 | { |
1516 | int tls_type, old_tls_type; | |
1517 | ||
1518 | switch (r_type) | |
1519 | { | |
1520 | default: | |
1521 | case R_386_GOT32: tls_type = GOT_NORMAL; break; | |
1522 | case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; | |
67a4f2b7 AO |
1523 | case R_386_TLS_GOTDESC: |
1524 | case R_386_TLS_DESC_CALL: | |
1525 | tls_type = GOT_TLS_GDESC; break; | |
37e55690 JJ |
1526 | case R_386_TLS_IE_32: |
1527 | if (ELF32_R_TYPE (rel->r_info) == r_type) | |
1528 | tls_type = GOT_TLS_IE_NEG; | |
1529 | else | |
ebcfb3c0 JJ |
1530 | /* If this is a GD->IE transition, we may use either of |
1531 | R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ | |
37e55690 JJ |
1532 | tls_type = GOT_TLS_IE; |
1533 | break; | |
1534 | case R_386_TLS_IE: | |
1535 | case R_386_TLS_GOTIE: | |
1536 | tls_type = GOT_TLS_IE_POS; break; | |
13ae64f3 JJ |
1537 | } |
1538 | ||
1539 | if (h != NULL) | |
1540 | { | |
1541 | h->got.refcount += 1; | |
1542 | old_tls_type = elf_i386_hash_entry(h)->tls_type; | |
1543 | } | |
1544 | else | |
1545 | { | |
1546 | bfd_signed_vma *local_got_refcounts; | |
1547 | ||
1548 | /* This is a global offset table entry for a local symbol. */ | |
1549 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1550 | if (local_got_refcounts == NULL) | |
1551 | { | |
1552 | bfd_size_type size; | |
1553 | ||
1554 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
1555 | size *= (sizeof (bfd_signed_vma) |
1556 | + sizeof (bfd_vma) + sizeof(char)); | |
55fd94b0 | 1557 | local_got_refcounts = bfd_zalloc (abfd, size); |
13ae64f3 | 1558 | if (local_got_refcounts == NULL) |
b34976b6 | 1559 | return FALSE; |
13ae64f3 | 1560 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
67a4f2b7 AO |
1561 | elf_i386_local_tlsdesc_gotent (abfd) |
1562 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); | |
13ae64f3 | 1563 | elf_i386_local_got_tls_type (abfd) |
67a4f2b7 | 1564 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
13ae64f3 JJ |
1565 | } |
1566 | local_got_refcounts[r_symndx] += 1; | |
1567 | old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx]; | |
1568 | } | |
1569 | ||
37e55690 JJ |
1570 | if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) |
1571 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1572 | /* If a TLS symbol is accessed using IE at least once, |
1573 | there is no point to use dynamic model for it. */ | |
ebcfb3c0 | 1574 | else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
67a4f2b7 | 1575 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
37e55690 | 1576 | || (tls_type & GOT_TLS_IE) == 0)) |
13ae64f3 | 1577 | { |
67a4f2b7 | 1578 | if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type)) |
37e55690 | 1579 | tls_type = old_tls_type; |
67a4f2b7 AO |
1580 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
1581 | && GOT_TLS_GD_ANY_P (tls_type)) | |
1582 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1583 | else |
1584 | { | |
1585 | (*_bfd_error_handler) | |
d003868e | 1586 | (_("%B: `%s' accessed both as normal and " |
55fd94b0 | 1587 | "thread local symbol"), |
d003868e | 1588 | abfd, |
37e55690 | 1589 | h ? h->root.root.string : "<local>"); |
b34976b6 | 1590 | return FALSE; |
13ae64f3 JJ |
1591 | } |
1592 | } | |
1593 | ||
1594 | if (old_tls_type != tls_type) | |
1595 | { | |
1596 | if (h != NULL) | |
1597 | elf_i386_hash_entry (h)->tls_type = tls_type; | |
1598 | else | |
1599 | elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1600 | } | |
1601 | } | |
0ac8d2ca AM |
1602 | /* Fall through */ |
1603 | ||
1604 | case R_386_GOTOFF: | |
1605 | case R_386_GOTPC: | |
13ae64f3 | 1606 | create_got: |
6de2ae4a | 1607 | if (htab->elf.sgot == NULL) |
0ac8d2ca AM |
1608 | { |
1609 | if (htab->elf.dynobj == NULL) | |
1610 | htab->elf.dynobj = abfd; | |
6de2ae4a | 1611 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) |
b34976b6 | 1612 | return FALSE; |
0ac8d2ca | 1613 | } |
37e55690 JJ |
1614 | if (r_type != R_386_TLS_IE) |
1615 | break; | |
1616 | /* Fall through */ | |
252b5132 | 1617 | |
37e55690 JJ |
1618 | case R_386_TLS_LE_32: |
1619 | case R_386_TLS_LE: | |
1620 | if (!info->shared) | |
1621 | break; | |
bffbf940 | 1622 | info->flags |= DF_STATIC_TLS; |
b34976b6 | 1623 | /* Fall through */ |
252b5132 RH |
1624 | |
1625 | case R_386_32: | |
1626 | case R_386_PC32: | |
710ab287 | 1627 | if (h != NULL && info->executable) |
6725bdbf | 1628 | { |
12d0ee4a | 1629 | /* If this reloc is in a read-only section, we might |
ebe50bae AM |
1630 | need a copy reloc. We can't check reliably at this |
1631 | stage whether the section is read-only, as input | |
1632 | sections have not yet been mapped to output sections. | |
1633 | Tentatively set the flag for now, and correct in | |
1634 | adjust_dynamic_symbol. */ | |
f5385ebf | 1635 | h->non_got_ref = 1; |
12d0ee4a AM |
1636 | |
1637 | /* We may need a .plt entry if the function this reloc | |
1638 | refers to is in a shared lib. */ | |
51b64d56 | 1639 | h->plt.refcount += 1; |
c6585bbb | 1640 | if (r_type != R_386_PC32) |
f5385ebf | 1641 | h->pointer_equality_needed = 1; |
6725bdbf | 1642 | } |
7843f00e | 1643 | |
252b5132 | 1644 | /* If we are creating a shared library, and this is a reloc |
f69da49f AM |
1645 | against a global symbol, or a non PC relative reloc |
1646 | against a local symbol, then we need to copy the reloc | |
1647 | into the shared library. However, if we are linking with | |
1648 | -Bsymbolic, we do not need to copy a reloc against a | |
1649 | global symbol which is defined in an object we are | |
1650 | including in the link (i.e., DEF_REGULAR is set). At | |
1651 | this point we have not seen all the input files, so it is | |
1652 | possible that DEF_REGULAR is not set now but will be set | |
1f655a09 L |
1653 | later (it is never cleared). In case of a weak definition, |
1654 | DEF_REGULAR may be cleared later by a strong definition in | |
ebe50bae | 1655 | a shared library. We account for that possibility below by |
1f655a09 L |
1656 | storing information in the relocs_copied field of the hash |
1657 | table entry. A similar situation occurs when creating | |
1658 | shared libraries and symbol visibility changes render the | |
12d0ee4a | 1659 | symbol local. |
56882138 | 1660 | |
12d0ee4a AM |
1661 | If on the other hand, we are creating an executable, we |
1662 | may need to keep relocations for symbols satisfied by a | |
1663 | dynamic library if we manage to avoid copy relocs for the | |
1664 | symbol. */ | |
1665 | if ((info->shared | |
1666 | && (sec->flags & SEC_ALLOC) != 0 | |
13ae64f3 | 1667 | && (r_type != R_386_PC32 |
12d0ee4a | 1668 | || (h != NULL |
55255dae | 1669 | && (! SYMBOLIC_BIND (info, h) |
12d0ee4a | 1670 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1671 | || !h->def_regular)))) |
a23b6845 AM |
1672 | || (ELIMINATE_COPY_RELOCS |
1673 | && !info->shared | |
12d0ee4a AM |
1674 | && (sec->flags & SEC_ALLOC) != 0 |
1675 | && h != NULL | |
12d0ee4a | 1676 | && (h->root.type == bfd_link_hash_defweak |
0f88be7a | 1677 | || !h->def_regular))) |
252b5132 | 1678 | { |
ec338859 AM |
1679 | struct elf_i386_dyn_relocs *p; |
1680 | struct elf_i386_dyn_relocs **head; | |
1681 | ||
12d0ee4a AM |
1682 | /* We must copy these reloc types into the output file. |
1683 | Create a reloc section in dynobj and make room for | |
1684 | this reloc. */ | |
252b5132 RH |
1685 | if (sreloc == NULL) |
1686 | { | |
0ac8d2ca AM |
1687 | if (htab->elf.dynobj == NULL) |
1688 | htab->elf.dynobj = abfd; | |
1689 | ||
83bac4b0 NC |
1690 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1691 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE); | |
1692 | ||
252b5132 | 1693 | if (sreloc == NULL) |
83bac4b0 | 1694 | return FALSE; |
252b5132 RH |
1695 | } |
1696 | ||
0c715baa AM |
1697 | /* If this is a global symbol, we count the number of |
1698 | relocations we need for this symbol. */ | |
1699 | if (h != NULL) | |
252b5132 | 1700 | { |
ec338859 | 1701 | head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs; |
0c715baa AM |
1702 | } |
1703 | else | |
1704 | { | |
e81d3500 | 1705 | void **vpp; |
ec338859 AM |
1706 | /* Track dynamic relocs needed for local syms too. |
1707 | We really need local syms available to do this | |
1708 | easily. Oh well. */ | |
1709 | ||
1710 | asection *s; | |
1711 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
1712 | sec, r_symndx); | |
1713 | if (s == NULL) | |
b34976b6 | 1714 | return FALSE; |
ec338859 | 1715 | |
e81d3500 DD |
1716 | vpp = &elf_section_data (s)->local_dynrel; |
1717 | head = (struct elf_i386_dyn_relocs **)vpp; | |
ec338859 AM |
1718 | } |
1719 | ||
1720 | p = *head; | |
1721 | if (p == NULL || p->sec != sec) | |
1722 | { | |
1723 | bfd_size_type amt = sizeof *p; | |
55fd94b0 | 1724 | p = bfd_alloc (htab->elf.dynobj, amt); |
ec338859 | 1725 | if (p == NULL) |
b34976b6 | 1726 | return FALSE; |
ec338859 AM |
1727 | p->next = *head; |
1728 | *head = p; | |
1729 | p->sec = sec; | |
1730 | p->count = 0; | |
1731 | p->pc_count = 0; | |
252b5132 | 1732 | } |
ec338859 AM |
1733 | |
1734 | p->count += 1; | |
13ae64f3 | 1735 | if (r_type == R_386_PC32) |
ec338859 | 1736 | p->pc_count += 1; |
252b5132 | 1737 | } |
252b5132 RH |
1738 | break; |
1739 | ||
1740 | /* This relocation describes the C++ object vtable hierarchy. | |
1741 | Reconstruct it for later use during GC. */ | |
1742 | case R_386_GNU_VTINHERIT: | |
d17e0c6e | 1743 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 1744 | return FALSE; |
252b5132 RH |
1745 | break; |
1746 | ||
1747 | /* This relocation describes which C++ vtable entries are actually | |
1748 | used. Record for later use during GC. */ | |
1749 | case R_386_GNU_VTENTRY: | |
c6aa130f MS |
1750 | BFD_ASSERT (h != NULL); |
1751 | if (h != NULL | |
1752 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1753 | return FALSE; |
252b5132 RH |
1754 | break; |
1755 | ||
1756 | default: | |
1757 | break; | |
1758 | } | |
1759 | } | |
1760 | ||
b34976b6 | 1761 | return TRUE; |
252b5132 RH |
1762 | } |
1763 | ||
1764 | /* Return the section that should be marked against GC for a given | |
1765 | relocation. */ | |
1766 | ||
1767 | static asection * | |
55fd94b0 | 1768 | elf_i386_gc_mark_hook (asection *sec, |
07adf181 | 1769 | struct bfd_link_info *info, |
55fd94b0 AM |
1770 | Elf_Internal_Rela *rel, |
1771 | struct elf_link_hash_entry *h, | |
1772 | Elf_Internal_Sym *sym) | |
252b5132 RH |
1773 | { |
1774 | if (h != NULL) | |
07adf181 AM |
1775 | switch (ELF32_R_TYPE (rel->r_info)) |
1776 | { | |
1777 | case R_386_GNU_VTINHERIT: | |
1778 | case R_386_GNU_VTENTRY: | |
1779 | return NULL; | |
1780 | } | |
1781 | ||
1782 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
1783 | } |
1784 | ||
1785 | /* Update the got entry reference counts for the section being removed. */ | |
1786 | ||
b34976b6 | 1787 | static bfd_boolean |
55fd94b0 AM |
1788 | elf_i386_gc_sweep_hook (bfd *abfd, |
1789 | struct bfd_link_info *info, | |
1790 | asection *sec, | |
1791 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1792 | { |
dd5724d5 AM |
1793 | Elf_Internal_Shdr *symtab_hdr; |
1794 | struct elf_link_hash_entry **sym_hashes; | |
1795 | bfd_signed_vma *local_got_refcounts; | |
1796 | const Elf_Internal_Rela *rel, *relend; | |
dd5724d5 | 1797 | |
7dda2462 TG |
1798 | if (info->relocatable) |
1799 | return TRUE; | |
1800 | ||
ec338859 | 1801 | elf_section_data (sec)->local_dynrel = NULL; |
dd5724d5 | 1802 | |
0ffa91dd | 1803 | symtab_hdr = &elf_symtab_hdr (abfd); |
6725bdbf AM |
1804 | sym_hashes = elf_sym_hashes (abfd); |
1805 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
dd5724d5 AM |
1806 | |
1807 | relend = relocs + sec->reloc_count; | |
1808 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1809 | { |
1810 | unsigned long r_symndx; | |
1811 | unsigned int r_type; | |
1812 | struct elf_link_hash_entry *h = NULL; | |
37e55690 | 1813 | |
26e41594 AM |
1814 | r_symndx = ELF32_R_SYM (rel->r_info); |
1815 | if (r_symndx >= symtab_hdr->sh_info) | |
1816 | { | |
1817 | struct elf_i386_link_hash_entry *eh; | |
1818 | struct elf_i386_dyn_relocs **pp; | |
1819 | struct elf_i386_dyn_relocs *p; | |
dd5724d5 | 1820 | |
26e41594 | 1821 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1822 | while (h->root.type == bfd_link_hash_indirect |
1823 | || h->root.type == bfd_link_hash_warning) | |
1824 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1825 | eh = (struct elf_i386_link_hash_entry *) h; |
0c715baa | 1826 | |
26e41594 AM |
1827 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
1828 | if (p->sec == sec) | |
1829 | { | |
1830 | /* Everything must go for SEC. */ | |
1831 | *pp = p->next; | |
1832 | break; | |
1833 | } | |
1834 | } | |
0c715baa | 1835 | |
26e41594 | 1836 | r_type = ELF32_R_TYPE (rel->r_info); |
142411ca L |
1837 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1838 | symtab_hdr, sym_hashes, | |
1839 | &r_type, GOT_UNKNOWN, | |
1840 | rel, relend, h)) | |
1841 | return FALSE; | |
1842 | ||
26e41594 AM |
1843 | switch (r_type) |
1844 | { | |
1845 | case R_386_TLS_LDM: | |
1846 | if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0) | |
1847 | elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1; | |
1848 | break; | |
0c715baa | 1849 | |
26e41594 | 1850 | case R_386_TLS_GD: |
67a4f2b7 AO |
1851 | case R_386_TLS_GOTDESC: |
1852 | case R_386_TLS_DESC_CALL: | |
26e41594 AM |
1853 | case R_386_TLS_IE_32: |
1854 | case R_386_TLS_IE: | |
1855 | case R_386_TLS_GOTIE: | |
1856 | case R_386_GOT32: | |
1857 | if (h != NULL) | |
1858 | { | |
1859 | if (h->got.refcount > 0) | |
1860 | h->got.refcount -= 1; | |
1861 | } | |
1862 | else if (local_got_refcounts != NULL) | |
1863 | { | |
1864 | if (local_got_refcounts[r_symndx] > 0) | |
1865 | local_got_refcounts[r_symndx] -= 1; | |
1866 | } | |
1867 | break; | |
0c715baa | 1868 | |
26e41594 AM |
1869 | case R_386_32: |
1870 | case R_386_PC32: | |
1871 | if (info->shared) | |
1872 | break; | |
1873 | /* Fall through */ | |
6725bdbf | 1874 | |
26e41594 AM |
1875 | case R_386_PLT32: |
1876 | if (h != NULL) | |
1877 | { | |
1878 | if (h->plt.refcount > 0) | |
1879 | h->plt.refcount -= 1; | |
1880 | } | |
1881 | break; | |
dd5724d5 | 1882 | |
26e41594 AM |
1883 | default: |
1884 | break; | |
1885 | } | |
1886 | } | |
252b5132 | 1887 | |
b34976b6 | 1888 | return TRUE; |
252b5132 RH |
1889 | } |
1890 | ||
1891 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1892 | regular object. The current definition is in some section of the | |
1893 | dynamic object, but we're not including those sections. We have to | |
1894 | change the definition to something the rest of the link can | |
1895 | understand. */ | |
1896 | ||
b34976b6 | 1897 | static bfd_boolean |
55fd94b0 AM |
1898 | elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info, |
1899 | struct elf_link_hash_entry *h) | |
252b5132 | 1900 | { |
6725bdbf | 1901 | struct elf_i386_link_hash_table *htab; |
252b5132 | 1902 | asection *s; |
252b5132 | 1903 | |
cbe950e9 L |
1904 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1905 | if (h->type == STT_GNU_IFUNC) | |
1906 | { | |
1907 | if (h->plt.refcount <= 0) | |
1908 | { | |
1909 | h->plt.offset = (bfd_vma) -1; | |
1910 | h->needs_plt = 0; | |
1911 | } | |
1912 | return TRUE; | |
1913 | } | |
1914 | ||
252b5132 RH |
1915 | /* If this is a function, put it in the procedure linkage table. We |
1916 | will fill in the contents of the procedure linkage table later, | |
1917 | when we know the address of the .got section. */ | |
1918 | if (h->type == STT_FUNC | |
f5385ebf | 1919 | || h->needs_plt) |
252b5132 | 1920 | { |
6725bdbf | 1921 | if (h->plt.refcount <= 0 |
9c7a29a3 AM |
1922 | || SYMBOL_CALLS_LOCAL (info, h) |
1923 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1924 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
1925 | { |
1926 | /* This case can occur if we saw a PLT32 reloc in an input | |
dd5724d5 AM |
1927 | file, but the symbol was never referred to by a dynamic |
1928 | object, or if all references were garbage collected. In | |
1929 | such a case, we don't actually need to build a procedure | |
1930 | linkage table, and we can just do a PC32 reloc instead. */ | |
bbd7ec4a | 1931 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1932 | h->needs_plt = 0; |
252b5132 RH |
1933 | } |
1934 | ||
b34976b6 | 1935 | return TRUE; |
252b5132 | 1936 | } |
6725bdbf AM |
1937 | else |
1938 | /* It's possible that we incorrectly decided a .plt reloc was | |
1939 | needed for an R_386_PC32 reloc to a non-function sym in | |
1940 | check_relocs. We can't decide accurately between function and | |
1941 | non-function syms in check-relocs; Objects loaded later in | |
1942 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1943 | h->plt.offset = (bfd_vma) -1; |
252b5132 RH |
1944 | |
1945 | /* If this is a weak symbol, and there is a real definition, the | |
1946 | processor independent code will have arranged for us to see the | |
1947 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1948 | if (h->u.weakdef != NULL) |
252b5132 | 1949 | { |
f6e332e6 AM |
1950 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1951 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1952 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1953 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 1954 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 1955 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 1956 | return TRUE; |
252b5132 RH |
1957 | } |
1958 | ||
1959 | /* This is a reference to a symbol defined by a dynamic object which | |
1960 | is not a function. */ | |
1961 | ||
1962 | /* If we are creating a shared library, we must presume that the | |
1963 | only references to the symbol are via the global offset table. | |
1964 | For such cases we need not do anything here; the relocations will | |
1965 | be handled correctly by relocate_section. */ | |
1966 | if (info->shared) | |
b34976b6 | 1967 | return TRUE; |
252b5132 | 1968 | |
7843f00e ILT |
1969 | /* If there are no references to this symbol that do not use the |
1970 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 1971 | if (!h->non_got_ref) |
b34976b6 | 1972 | return TRUE; |
7843f00e | 1973 | |
8bd621d8 AM |
1974 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1975 | if (info->nocopyreloc) | |
1976 | { | |
f5385ebf | 1977 | h->non_got_ref = 0; |
b34976b6 | 1978 | return TRUE; |
8bd621d8 AM |
1979 | } |
1980 | ||
643796e3 DJ |
1981 | htab = elf_i386_hash_table (info); |
1982 | ||
1983 | /* If there aren't any dynamic relocs in read-only sections, then | |
1984 | we can keep the dynamic relocs and avoid the copy reloc. This | |
1985 | doesn't work on VxWorks, where we can not have dynamic relocations | |
1986 | (other than copy and jump slot relocations) in an executable. */ | |
1987 | if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks) | |
ebe50bae | 1988 | { |
a23b6845 AM |
1989 | struct elf_i386_link_hash_entry * eh; |
1990 | struct elf_i386_dyn_relocs *p; | |
ebe50bae | 1991 | |
a23b6845 AM |
1992 | eh = (struct elf_i386_link_hash_entry *) h; |
1993 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1994 | { | |
1995 | s = p->sec->output_section; | |
1996 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1997 | break; | |
1998 | } | |
1999 | ||
a23b6845 AM |
2000 | if (p == NULL) |
2001 | { | |
f5385ebf | 2002 | h->non_got_ref = 0; |
a23b6845 AM |
2003 | return TRUE; |
2004 | } | |
ebe50bae AM |
2005 | } |
2006 | ||
909272ee AM |
2007 | if (h->size == 0) |
2008 | { | |
2009 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
2010 | h->root.root.string); | |
2011 | return TRUE; | |
2012 | } | |
2013 | ||
252b5132 RH |
2014 | /* We must allocate the symbol in our .dynbss section, which will |
2015 | become part of the .bss section of the executable. There will be | |
2016 | an entry for this symbol in the .dynsym section. The dynamic | |
2017 | object will contain position independent code, so all references | |
2018 | from the dynamic object to this symbol will go through the global | |
2019 | offset table. The dynamic linker will use the .dynsym entry to | |
2020 | determine the address it must put in the global offset table, so | |
2021 | both the dynamic object and the regular object will refer to the | |
2022 | same memory location for the variable. */ | |
2023 | ||
252b5132 RH |
2024 | /* We must generate a R_386_COPY reloc to tell the dynamic linker to |
2025 | copy the initial value out of the dynamic object and into the | |
0ac8d2ca | 2026 | runtime process image. */ |
252b5132 RH |
2027 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
2028 | { | |
eea6121a | 2029 | htab->srelbss->size += sizeof (Elf32_External_Rel); |
f5385ebf | 2030 | h->needs_copy = 1; |
252b5132 RH |
2031 | } |
2032 | ||
0ac8d2ca | 2033 | s = htab->sdynbss; |
252b5132 | 2034 | |
027297b7 | 2035 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
2036 | } |
2037 | ||
6725bdbf | 2038 | /* Allocate space in .plt, .got and associated reloc sections for |
0c715baa | 2039 | dynamic relocs. */ |
6725bdbf | 2040 | |
b34976b6 | 2041 | static bfd_boolean |
eb4ff4d6 | 2042 | elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
6725bdbf AM |
2043 | { |
2044 | struct bfd_link_info *info; | |
2045 | struct elf_i386_link_hash_table *htab; | |
5a15f56f | 2046 | struct elf_i386_link_hash_entry *eh; |
0c715baa | 2047 | struct elf_i386_dyn_relocs *p; |
6725bdbf | 2048 | |
e92d460e | 2049 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 2050 | return TRUE; |
6725bdbf | 2051 | |
e92d460e AM |
2052 | if (h->root.type == bfd_link_hash_warning) |
2053 | /* When warning symbols are created, they **replace** the "real" | |
2054 | entry in the hash table, thus we never get to see the real | |
2055 | symbol in a hash traversal. So look at it now. */ | |
2056 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
cbe950e9 | 2057 | eh = (struct elf_i386_link_hash_entry *) h; |
e92d460e | 2058 | |
6725bdbf AM |
2059 | info = (struct bfd_link_info *) inf; |
2060 | htab = elf_i386_hash_table (info); | |
2061 | ||
cbe950e9 L |
2062 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
2063 | here if it is defined and referenced in a non-shared object. */ | |
2064 | if (h->type == STT_GNU_IFUNC | |
2065 | && h->def_regular) | |
2066 | { | |
2067 | asection *plt, *gotplt, *relplt; | |
2068 | ||
44c4ea11 | 2069 | /* When a shared library references a STT_GNU_IFUNC symbol |
188dbb07 L |
2070 | defined in executable, the address of the resolved function |
2071 | may be used. But in non-shared executable, the address of | |
2072 | its .plt slot may be used. Pointer equality may not work | |
2073 | correctly. PIE should be used if pointer equality is | |
2074 | required here. */ | |
44c4ea11 L |
2075 | if (!info->shared |
2076 | && (h->dynindx != -1 | |
2077 | || info->export_dynamic) | |
2078 | && h->pointer_equality_needed) | |
2079 | { | |
2080 | info->callbacks->einfo | |
eba077f2 | 2081 | (_("%F%P: dynamic STT_GNU_IFUNC symbol `%s' with pointer " |
44c4ea11 L |
2082 | "equality in `%B' can not be used when making an " |
2083 | "executable; recompile with -fPIE and relink with -pie\n"), | |
2084 | h->root.root.string, | |
2085 | h->root.u.def.section->owner); | |
2086 | bfd_set_error (bfd_error_bad_value); | |
2087 | return FALSE; | |
2088 | } | |
2089 | ||
cbe950e9 L |
2090 | /* Return and discard space for dynamic relocations against it if |
2091 | it is never referenced in a non-shared object. */ | |
2092 | if (!h->ref_regular) | |
2093 | { | |
2094 | if (h->plt.refcount > 0 | |
2095 | || h->got.refcount > 0) | |
2096 | abort (); | |
2097 | h->got.offset = (bfd_vma) -1; | |
2098 | eh->dyn_relocs = NULL; | |
2099 | return TRUE; | |
2100 | } | |
2101 | ||
cbe950e9 L |
2102 | /* When building a static executable, use .iplt, .igot.plt and |
2103 | .rel.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 2104 | if (htab->elf.splt != NULL) |
cbe950e9 | 2105 | { |
6de2ae4a L |
2106 | plt = htab->elf.splt; |
2107 | gotplt = htab->elf.sgotplt; | |
2108 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
2109 | |
2110 | /* If this is the first .plt entry, make room for the special | |
2111 | first entry. */ | |
2112 | if (plt->size == 0) | |
2113 | plt->size += PLT_ENTRY_SIZE; | |
2114 | } | |
2115 | else | |
2116 | { | |
6de2ae4a L |
2117 | plt = htab->elf.iplt; |
2118 | gotplt = htab->elf.igotplt; | |
2119 | relplt = htab->elf.irelplt; | |
cbe950e9 L |
2120 | } |
2121 | ||
2122 | /* Don't update value of STT_GNU_IFUNC symbol to PLT. We need | |
2123 | the original value for R_386_IRELATIVE. */ | |
2124 | h->plt.offset = plt->size; | |
2125 | ||
2126 | /* Make room for this entry in the .plt/.iplt section. */ | |
2127 | plt->size += PLT_ENTRY_SIZE; | |
2128 | ||
2129 | /* We also need to make an entry in the .got.plt/.got.iplt | |
2130 | section, which will be placed in the .got section by the | |
2131 | linker script. */ | |
2132 | gotplt->size += 4; | |
2133 | ||
2134 | /* We also need to make an entry in the .rela.plt/.rela.iplt | |
2135 | section. */ | |
2136 | relplt->size += sizeof (Elf32_External_Rel); | |
2137 | relplt->reloc_count++; | |
2138 | ||
710ab287 L |
2139 | /* We need dynamic relocation for STT_GNU_IFUNC symbol only |
2140 | when there is a non-GOT reference in a shared object. */ | |
2141 | if (!info->shared | |
2142 | || !h->non_got_ref) | |
cbe950e9 L |
2143 | eh->dyn_relocs = NULL; |
2144 | ||
710ab287 L |
2145 | /* Finally, allocate space. */ |
2146 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6de2ae4a | 2147 | htab->elf.irelifunc->size += p->count * sizeof (Elf32_External_Rel); |
710ab287 L |
2148 | |
2149 | /* For STT_GNU_IFUNC symbol, .got.plt has the real function | |
2150 | addres and .got has the PLT entry adddress. We will load | |
2151 | the GOT entry with the PLT entry in finish_dynamic_symbol if | |
2152 | it is used. For branch, it uses .got.plt. For symbol value, | |
2153 | 1. Use .got.plt in a shared object if it is forced local or | |
2154 | not dynamic. | |
2155 | 2. Use .got.plt in a non-shared object if pointer equality | |
2156 | isn't needed. | |
44c4ea11 L |
2157 | 3. Use .got.plt in PIE. |
2158 | 4. Use .got.plt if .got isn't used. | |
2159 | 5. Otherwise use .got so that it can be shared among different | |
710ab287 L |
2160 | objects at run-time. |
2161 | We only need to relocate .got entry in shared object. */ | |
2162 | if ((info->shared | |
2163 | && (h->dynindx == -1 | |
2164 | || h->forced_local)) | |
2165 | || (!info->shared | |
2166 | && !h->pointer_equality_needed) | |
44c4ea11 | 2167 | || (info->executable && info->shared) |
6de2ae4a | 2168 | || htab->elf.sgot == NULL) |
710ab287 L |
2169 | { |
2170 | /* Use .got.plt. */ | |
2171 | h->got.offset = (bfd_vma) -1; | |
0018b0a3 | 2172 | } |
710ab287 L |
2173 | else |
2174 | { | |
6de2ae4a L |
2175 | h->got.offset = htab->elf.sgot->size; |
2176 | htab->elf.sgot->size += 4; | |
710ab287 | 2177 | if (info->shared) |
6de2ae4a | 2178 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); |
710ab287 L |
2179 | } |
2180 | ||
2181 | return TRUE; | |
cbe950e9 L |
2182 | } |
2183 | else if (htab->elf.dynamic_sections_created | |
2184 | && h->plt.refcount > 0) | |
6725bdbf | 2185 | { |
5a15f56f AM |
2186 | /* Make sure this symbol is output as a dynamic symbol. |
2187 | Undefined weak syms won't yet be marked as dynamic. */ | |
2188 | if (h->dynindx == -1 | |
f5385ebf | 2189 | && !h->forced_local) |
5a15f56f | 2190 | { |
c152c796 | 2191 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2192 | return FALSE; |
5a15f56f AM |
2193 | } |
2194 | ||
4e795f50 AM |
2195 | if (info->shared |
2196 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
ced53ee5 | 2197 | { |
6de2ae4a | 2198 | asection *s = htab->elf.splt; |
6725bdbf | 2199 | |
ced53ee5 AM |
2200 | /* If this is the first .plt entry, make room for the special |
2201 | first entry. */ | |
eea6121a AM |
2202 | if (s->size == 0) |
2203 | s->size += PLT_ENTRY_SIZE; | |
6725bdbf | 2204 | |
eea6121a | 2205 | h->plt.offset = s->size; |
6725bdbf | 2206 | |
ced53ee5 AM |
2207 | /* If this symbol is not defined in a regular file, and we are |
2208 | not generating a shared library, then set the symbol to this | |
2209 | location in the .plt. This is required to make function | |
2210 | pointers compare as equal between the normal executable and | |
2211 | the shared library. */ | |
2212 | if (! info->shared | |
f5385ebf | 2213 | && !h->def_regular) |
ced53ee5 AM |
2214 | { |
2215 | h->root.u.def.section = s; | |
2216 | h->root.u.def.value = h->plt.offset; | |
2217 | } | |
6725bdbf | 2218 | |
ced53ee5 | 2219 | /* Make room for this entry. */ |
eea6121a | 2220 | s->size += PLT_ENTRY_SIZE; |
6725bdbf | 2221 | |
ced53ee5 AM |
2222 | /* We also need to make an entry in the .got.plt section, which |
2223 | will be placed in the .got section by the linker script. */ | |
6de2ae4a | 2224 | htab->elf.sgotplt->size += 4; |
6725bdbf | 2225 | |
6725bdbf | 2226 | /* We also need to make an entry in the .rel.plt section. */ |
6de2ae4a | 2227 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
5ae0bfb6 | 2228 | htab->next_tls_desc_index++; |
eac338cf PB |
2229 | |
2230 | if (htab->is_vxworks && !info->shared) | |
2231 | { | |
2232 | /* VxWorks has a second set of relocations for each PLT entry | |
2233 | in executables. They go in a separate relocation section, | |
2234 | which is processed by the kernel loader. */ | |
2235 | ||
2236 | /* There are two relocations for the initial PLT entry: an | |
2237 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an | |
2238 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
2239 | ||
2240 | if (h->plt.offset == PLT_ENTRY_SIZE) | |
2241 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); | |
2242 | ||
2243 | /* There are two extra relocations for each subsequent PLT entry: | |
2244 | an R_386_32 relocation for the GOT entry, and an R_386_32 | |
2245 | relocation for the PLT entry. */ | |
2246 | ||
2247 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); | |
2248 | } | |
6725bdbf | 2249 | } |
ced53ee5 AM |
2250 | else |
2251 | { | |
51b64d56 | 2252 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2253 | h->needs_plt = 0; |
ced53ee5 | 2254 | } |
6725bdbf AM |
2255 | } |
2256 | else | |
2257 | { | |
51b64d56 | 2258 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2259 | h->needs_plt = 0; |
6725bdbf AM |
2260 | } |
2261 | ||
67a4f2b7 AO |
2262 | eh->tlsdesc_got = (bfd_vma) -1; |
2263 | ||
37e55690 | 2264 | /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, |
13ae64f3 JJ |
2265 | make it a R_386_TLS_LE_32 requiring no TLS entry. */ |
2266 | if (h->got.refcount > 0 | |
2267 | && !info->shared | |
2268 | && h->dynindx == -1 | |
37e55690 | 2269 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE)) |
cedb70c5 | 2270 | h->got.offset = (bfd_vma) -1; |
13ae64f3 | 2271 | else if (h->got.refcount > 0) |
6725bdbf | 2272 | { |
0ac8d2ca | 2273 | asection *s; |
b34976b6 | 2274 | bfd_boolean dyn; |
13ae64f3 | 2275 | int tls_type = elf_i386_hash_entry(h)->tls_type; |
6725bdbf | 2276 | |
5a15f56f AM |
2277 | /* Make sure this symbol is output as a dynamic symbol. |
2278 | Undefined weak syms won't yet be marked as dynamic. */ | |
2279 | if (h->dynindx == -1 | |
f5385ebf | 2280 | && !h->forced_local) |
5a15f56f | 2281 | { |
c152c796 | 2282 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2283 | return FALSE; |
5a15f56f AM |
2284 | } |
2285 | ||
6de2ae4a | 2286 | s = htab->elf.sgot; |
67a4f2b7 AO |
2287 | if (GOT_TLS_GDESC_P (tls_type)) |
2288 | { | |
6de2ae4a | 2289 | eh->tlsdesc_got = htab->elf.sgotplt->size |
67a4f2b7 | 2290 | - elf_i386_compute_jump_table_size (htab); |
6de2ae4a | 2291 | htab->elf.sgotplt->size += 8; |
67a4f2b7 AO |
2292 | h->got.offset = (bfd_vma) -2; |
2293 | } | |
2294 | if (! GOT_TLS_GDESC_P (tls_type) | |
2295 | || GOT_TLS_GD_P (tls_type)) | |
2296 | { | |
2297 | h->got.offset = s->size; | |
2298 | s->size += 4; | |
2299 | /* R_386_TLS_GD needs 2 consecutive GOT slots. */ | |
2300 | if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH) | |
2301 | s->size += 4; | |
2302 | } | |
ebe50bae | 2303 | dyn = htab->elf.dynamic_sections_created; |
13ae64f3 | 2304 | /* R_386_TLS_IE_32 needs one dynamic relocation, |
37e55690 JJ |
2305 | R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, |
2306 | (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we | |
2307 | need two), R_386_TLS_GD needs one if local symbol and two if | |
2308 | global. */ | |
2309 | if (tls_type == GOT_TLS_IE_BOTH) | |
6de2ae4a | 2310 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 | 2311 | else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1) |
37e55690 | 2312 | || (tls_type & GOT_TLS_IE)) |
6de2ae4a | 2313 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2314 | else if (GOT_TLS_GD_P (tls_type)) |
6de2ae4a | 2315 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2316 | else if (! GOT_TLS_GDESC_P (tls_type) |
2317 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2318 | || h->root.type != bfd_link_hash_undefweak) | |
ef5aade5 L |
2319 | && (info->shared |
2320 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
6de2ae4a | 2321 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2322 | if (GOT_TLS_GDESC_P (tls_type)) |
6de2ae4a | 2323 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
6725bdbf AM |
2324 | } |
2325 | else | |
51b64d56 | 2326 | h->got.offset = (bfd_vma) -1; |
6725bdbf | 2327 | |
5a15f56f | 2328 | if (eh->dyn_relocs == NULL) |
b34976b6 | 2329 | return TRUE; |
5a15f56f | 2330 | |
0c715baa AM |
2331 | /* In the shared -Bsymbolic case, discard space allocated for |
2332 | dynamic pc-relative relocs against symbols which turn out to be | |
2333 | defined in regular objects. For the normal shared case, discard | |
0ac8d2ca AM |
2334 | space for pc-relative relocs that have become local due to symbol |
2335 | visibility changes. */ | |
0c715baa AM |
2336 | |
2337 | if (info->shared) | |
5a15f56f | 2338 | { |
09695f56 AM |
2339 | /* The only reloc that uses pc_count is R_386_PC32, which will |
2340 | appear on a call or on something like ".long foo - .". We | |
2341 | want calls to protected symbols to resolve directly to the | |
2342 | function rather than going via the plt. If people want | |
2343 | function pointer comparisons to work as expected then they | |
2344 | should avoid writing assembly like ".long foo - .". */ | |
2345 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
5a15f56f | 2346 | { |
0c715baa AM |
2347 | struct elf_i386_dyn_relocs **pp; |
2348 | ||
2349 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2350 | { | |
2351 | p->count -= p->pc_count; | |
2352 | p->pc_count = 0; | |
2353 | if (p->count == 0) | |
2354 | *pp = p->next; | |
2355 | else | |
2356 | pp = &p->next; | |
2357 | } | |
5a15f56f | 2358 | } |
4e795f50 | 2359 | |
3348747a NS |
2360 | if (htab->is_vxworks) |
2361 | { | |
2362 | struct elf_i386_dyn_relocs **pp; | |
2363 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2364 | { | |
2365 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
2366 | *pp = p->next; | |
2367 | else | |
2368 | pp = &p->next; | |
2369 | } | |
2370 | } | |
2371 | ||
4e795f50 | 2372 | /* Also discard relocs on undefined weak syms with non-default |
3348747a | 2373 | visibility. */ |
22d606e9 | 2374 | if (eh->dyn_relocs != NULL |
4e795f50 | 2375 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
2376 | { |
2377 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2378 | eh->dyn_relocs = NULL; | |
2379 | ||
2380 | /* Make sure undefined weak symbols are output as a dynamic | |
2381 | symbol in PIEs. */ | |
2382 | else if (h->dynindx == -1 | |
2383 | && !h->forced_local) | |
2384 | { | |
2385 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2386 | return FALSE; | |
2387 | } | |
2388 | } | |
0c715baa | 2389 | } |
a23b6845 | 2390 | else if (ELIMINATE_COPY_RELOCS) |
0c715baa AM |
2391 | { |
2392 | /* For the non-shared case, discard space for relocs against | |
2393 | symbols which turn out to need copy relocs or are not | |
2394 | dynamic. */ | |
2395 | ||
f5385ebf AM |
2396 | if (!h->non_got_ref |
2397 | && ((h->def_dynamic | |
2398 | && !h->def_regular) | |
ebe50bae | 2399 | || (htab->elf.dynamic_sections_created |
0c715baa AM |
2400 | && (h->root.type == bfd_link_hash_undefweak |
2401 | || h->root.type == bfd_link_hash_undefined)))) | |
2402 | { | |
2403 | /* Make sure this symbol is output as a dynamic symbol. | |
2404 | Undefined weak syms won't yet be marked as dynamic. */ | |
2405 | if (h->dynindx == -1 | |
f5385ebf | 2406 | && !h->forced_local) |
0c715baa | 2407 | { |
c152c796 | 2408 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2409 | return FALSE; |
0c715baa | 2410 | } |
5a15f56f | 2411 | |
0c715baa AM |
2412 | /* If that succeeded, we know we'll be keeping all the |
2413 | relocs. */ | |
2414 | if (h->dynindx != -1) | |
2415 | goto keep; | |
2416 | } | |
2417 | ||
2418 | eh->dyn_relocs = NULL; | |
2419 | ||
ec338859 | 2420 | keep: ; |
5a15f56f AM |
2421 | } |
2422 | ||
0c715baa AM |
2423 | /* Finally, allocate space. */ |
2424 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
12d0ee4a | 2425 | { |
e7c33416 NC |
2426 | asection *sreloc; |
2427 | ||
cbe950e9 | 2428 | sreloc = elf_section_data (p->sec)->sreloc; |
e7c33416 NC |
2429 | |
2430 | BFD_ASSERT (sreloc != NULL); | |
eea6121a | 2431 | sreloc->size += p->count * sizeof (Elf32_External_Rel); |
12d0ee4a AM |
2432 | } |
2433 | ||
b34976b6 | 2434 | return TRUE; |
6725bdbf AM |
2435 | } |
2436 | ||
c25bc9fc L |
2437 | /* Allocate space in .plt, .got and associated reloc sections for |
2438 | local dynamic relocs. */ | |
2439 | ||
2440 | static bfd_boolean | |
2441 | elf_i386_allocate_local_dynrelocs (void **slot, void *inf) | |
2442 | { | |
2443 | struct elf_link_hash_entry *h | |
2444 | = (struct elf_link_hash_entry *) *slot; | |
2445 | ||
2446 | if (h->type != STT_GNU_IFUNC | |
2447 | || !h->def_regular | |
2448 | || !h->ref_regular | |
2449 | || !h->forced_local | |
2450 | || h->root.type != bfd_link_hash_defined) | |
2451 | abort (); | |
2452 | ||
2453 | return elf_i386_allocate_dynrelocs (h, inf); | |
2454 | } | |
2455 | ||
0c715baa AM |
2456 | /* Find any dynamic relocs that apply to read-only sections. */ |
2457 | ||
b34976b6 | 2458 | static bfd_boolean |
eb4ff4d6 | 2459 | elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
0c715baa AM |
2460 | { |
2461 | struct elf_i386_link_hash_entry *eh; | |
2462 | struct elf_i386_dyn_relocs *p; | |
2463 | ||
e92d460e AM |
2464 | if (h->root.type == bfd_link_hash_warning) |
2465 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2466 | ||
0c715baa AM |
2467 | eh = (struct elf_i386_link_hash_entry *) h; |
2468 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2469 | { | |
2470 | asection *s = p->sec->output_section; | |
2471 | ||
2472 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2473 | { | |
2474 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2475 | ||
2476 | info->flags |= DF_TEXTREL; | |
2477 | ||
2478 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 2479 | return FALSE; |
0c715baa AM |
2480 | } |
2481 | } | |
b34976b6 | 2482 | return TRUE; |
0c715baa AM |
2483 | } |
2484 | ||
252b5132 RH |
2485 | /* Set the sizes of the dynamic sections. */ |
2486 | ||
b34976b6 | 2487 | static bfd_boolean |
55fd94b0 AM |
2488 | elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
2489 | struct bfd_link_info *info) | |
252b5132 | 2490 | { |
6725bdbf | 2491 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2492 | bfd *dynobj; |
2493 | asection *s; | |
b34976b6 | 2494 | bfd_boolean relocs; |
0c715baa | 2495 | bfd *ibfd; |
252b5132 | 2496 | |
6725bdbf | 2497 | htab = elf_i386_hash_table (info); |
ebe50bae | 2498 | dynobj = htab->elf.dynobj; |
ffb2e45b AM |
2499 | if (dynobj == NULL) |
2500 | abort (); | |
252b5132 | 2501 | |
ebe50bae | 2502 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2503 | { |
2504 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 2505 | if (info->executable) |
252b5132 RH |
2506 | { |
2507 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
ffb2e45b AM |
2508 | if (s == NULL) |
2509 | abort (); | |
eea6121a | 2510 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
2511 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2512 | } | |
161d71a6 | 2513 | } |
6725bdbf | 2514 | |
0c715baa AM |
2515 | /* Set up .got offsets for local syms, and space for local dynamic |
2516 | relocs. */ | |
2517 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
161d71a6 L |
2518 | { |
2519 | bfd_signed_vma *local_got; | |
2520 | bfd_signed_vma *end_local_got; | |
13ae64f3 | 2521 | char *local_tls_type; |
67a4f2b7 | 2522 | bfd_vma *local_tlsdesc_gotent; |
161d71a6 L |
2523 | bfd_size_type locsymcount; |
2524 | Elf_Internal_Shdr *symtab_hdr; | |
2525 | asection *srel; | |
6725bdbf | 2526 | |
0ffa91dd | 2527 | if (! is_i386_elf (ibfd)) |
161d71a6 | 2528 | continue; |
6725bdbf | 2529 | |
0c715baa AM |
2530 | for (s = ibfd->sections; s != NULL; s = s->next) |
2531 | { | |
ec338859 | 2532 | struct elf_i386_dyn_relocs *p; |
0c715baa | 2533 | |
e81d3500 DD |
2534 | for (p = ((struct elf_i386_dyn_relocs *) |
2535 | elf_section_data (s)->local_dynrel); | |
ec338859 AM |
2536 | p != NULL; |
2537 | p = p->next) | |
0c715baa | 2538 | { |
ec338859 AM |
2539 | if (!bfd_is_abs_section (p->sec) |
2540 | && bfd_is_abs_section (p->sec->output_section)) | |
2541 | { | |
2542 | /* Input section has been discarded, either because | |
2543 | it is a copy of a linkonce section or due to | |
2544 | linker script /DISCARD/, so we'll be discarding | |
2545 | the relocs too. */ | |
2546 | } | |
3348747a NS |
2547 | else if (htab->is_vxworks |
2548 | && strcmp (p->sec->output_section->name, | |
2549 | ".tls_vars") == 0) | |
2550 | { | |
2551 | /* Relocations in vxworks .tls_vars sections are | |
2552 | handled specially by the loader. */ | |
2553 | } | |
248866a8 | 2554 | else if (p->count != 0) |
ec338859 AM |
2555 | { |
2556 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 2557 | srel->size += p->count * sizeof (Elf32_External_Rel); |
248866a8 AM |
2558 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
2559 | info->flags |= DF_TEXTREL; | |
ec338859 | 2560 | } |
0c715baa AM |
2561 | } |
2562 | } | |
2563 | ||
2564 | local_got = elf_local_got_refcounts (ibfd); | |
161d71a6 L |
2565 | if (!local_got) |
2566 | continue; | |
6725bdbf | 2567 | |
0ffa91dd | 2568 | symtab_hdr = &elf_symtab_hdr (ibfd); |
161d71a6 L |
2569 | locsymcount = symtab_hdr->sh_info; |
2570 | end_local_got = local_got + locsymcount; | |
13ae64f3 | 2571 | local_tls_type = elf_i386_local_got_tls_type (ibfd); |
67a4f2b7 | 2572 | local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd); |
6de2ae4a L |
2573 | s = htab->elf.sgot; |
2574 | srel = htab->elf.srelgot; | |
67a4f2b7 AO |
2575 | for (; local_got < end_local_got; |
2576 | ++local_got, ++local_tls_type, ++local_tlsdesc_gotent) | |
161d71a6 | 2577 | { |
67a4f2b7 | 2578 | *local_tlsdesc_gotent = (bfd_vma) -1; |
161d71a6 | 2579 | if (*local_got > 0) |
6725bdbf | 2580 | { |
67a4f2b7 AO |
2581 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
2582 | { | |
6de2ae4a | 2583 | *local_tlsdesc_gotent = htab->elf.sgotplt->size |
67a4f2b7 | 2584 | - elf_i386_compute_jump_table_size (htab); |
6de2ae4a | 2585 | htab->elf.sgotplt->size += 8; |
67a4f2b7 AO |
2586 | *local_got = (bfd_vma) -2; |
2587 | } | |
2588 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2589 | || GOT_TLS_GD_P (*local_tls_type)) | |
2590 | { | |
2591 | *local_got = s->size; | |
2592 | s->size += 4; | |
2593 | if (GOT_TLS_GD_P (*local_tls_type) | |
2594 | || *local_tls_type == GOT_TLS_IE_BOTH) | |
2595 | s->size += 4; | |
2596 | } | |
13ae64f3 | 2597 | if (info->shared |
67a4f2b7 | 2598 | || GOT_TLS_GD_ANY_P (*local_tls_type) |
37e55690 JJ |
2599 | || (*local_tls_type & GOT_TLS_IE)) |
2600 | { | |
2601 | if (*local_tls_type == GOT_TLS_IE_BOTH) | |
eea6121a | 2602 | srel->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2603 | else if (GOT_TLS_GD_P (*local_tls_type) |
2604 | || ! GOT_TLS_GDESC_P (*local_tls_type)) | |
eea6121a | 2605 | srel->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2606 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
6de2ae4a | 2607 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
37e55690 | 2608 | } |
6725bdbf | 2609 | } |
161d71a6 L |
2610 | else |
2611 | *local_got = (bfd_vma) -1; | |
6725bdbf | 2612 | } |
252b5132 | 2613 | } |
6725bdbf | 2614 | |
13ae64f3 JJ |
2615 | if (htab->tls_ldm_got.refcount > 0) |
2616 | { | |
2617 | /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM | |
2618 | relocs. */ | |
6de2ae4a L |
2619 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
2620 | htab->elf.sgot->size += 8; | |
2621 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2622 | } |
2623 | else | |
2624 | htab->tls_ldm_got.offset = -1; | |
2625 | ||
0c715baa AM |
2626 | /* Allocate global sym .plt and .got entries, and space for global |
2627 | sym dynamic relocs. */ | |
eb4ff4d6 | 2628 | elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info); |
252b5132 | 2629 | |
c25bc9fc L |
2630 | /* Allocate .plt and .got entries, and space for local symbols. */ |
2631 | htab_traverse (htab->loc_hash_table, | |
2632 | elf_i386_allocate_local_dynrelocs, | |
2633 | info); | |
2634 | ||
67a4f2b7 AO |
2635 | /* For every jump slot reserved in the sgotplt, reloc_count is |
2636 | incremented. However, when we reserve space for TLS descriptors, | |
2637 | it's not incremented, so in order to compute the space reserved | |
2638 | for them, it suffices to multiply the reloc count by the jump | |
2639 | slot size. */ | |
6de2ae4a | 2640 | if (htab->elf.srelplt) |
5ae0bfb6 | 2641 | htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4; |
67a4f2b7 | 2642 | |
5a15f56f AM |
2643 | /* We now have determined the sizes of the various dynamic sections. |
2644 | Allocate memory for them. */ | |
b34976b6 | 2645 | relocs = FALSE; |
252b5132 RH |
2646 | for (s = dynobj->sections; s != NULL; s = s->next) |
2647 | { | |
eac338cf PB |
2648 | bfd_boolean strip_section = TRUE; |
2649 | ||
252b5132 RH |
2650 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
2651 | continue; | |
2652 | ||
6de2ae4a L |
2653 | if (s == htab->elf.splt |
2654 | || s == htab->elf.sgot | |
2655 | || s == htab->elf.sgotplt | |
2656 | || s == htab->elf.iplt | |
2657 | || s == htab->elf.igotplt | |
75ff4589 | 2658 | || s == htab->sdynbss) |
252b5132 | 2659 | { |
6725bdbf AM |
2660 | /* Strip this section if we don't need it; see the |
2661 | comment below. */ | |
eac338cf PB |
2662 | /* We'd like to strip these sections if they aren't needed, but if |
2663 | we've exported dynamic symbols from them we must leave them. | |
2664 | It's too late to tell BFD to get rid of the symbols. */ | |
2665 | ||
7325306f | 2666 | if (htab->elf.hplt != NULL) |
eac338cf | 2667 | strip_section = FALSE; |
252b5132 | 2668 | } |
0112cd26 | 2669 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel")) |
252b5132 | 2670 | { |
6de2ae4a L |
2671 | if (s->size != 0 |
2672 | && s != htab->elf.srelplt | |
2673 | && s != htab->srelplt2) | |
b34976b6 | 2674 | relocs = TRUE; |
252b5132 | 2675 | |
0ac8d2ca AM |
2676 | /* We use the reloc_count field as a counter if we need |
2677 | to copy relocs into the output file. */ | |
5ae0bfb6 | 2678 | s->reloc_count = 0; |
252b5132 | 2679 | } |
6725bdbf | 2680 | else |
252b5132 RH |
2681 | { |
2682 | /* It's not one of our sections, so don't allocate space. */ | |
2683 | continue; | |
2684 | } | |
2685 | ||
c456f082 | 2686 | if (s->size == 0) |
252b5132 | 2687 | { |
0ac8d2ca AM |
2688 | /* If we don't need this section, strip it from the |
2689 | output file. This is mostly to handle .rel.bss and | |
2690 | .rel.plt. We must create both sections in | |
2691 | create_dynamic_sections, because they must be created | |
2692 | before the linker maps input sections to output | |
2693 | sections. The linker does that before | |
2694 | adjust_dynamic_symbol is called, and it is that | |
2695 | function which decides whether anything needs to go | |
2696 | into these sections. */ | |
c456f082 AM |
2697 | if (strip_section) |
2698 | s->flags |= SEC_EXCLUDE; | |
252b5132 RH |
2699 | continue; |
2700 | } | |
2701 | ||
c456f082 AM |
2702 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2703 | continue; | |
2704 | ||
f69da49f AM |
2705 | /* Allocate memory for the section contents. We use bfd_zalloc |
2706 | here in case unused entries are not reclaimed before the | |
2707 | section's contents are written out. This should not happen, | |
2708 | but this way if it does, we get a R_386_NONE reloc instead | |
2709 | of garbage. */ | |
eea6121a | 2710 | s->contents = bfd_zalloc (dynobj, s->size); |
6725bdbf | 2711 | if (s->contents == NULL) |
b34976b6 | 2712 | return FALSE; |
252b5132 RH |
2713 | } |
2714 | ||
ebe50bae | 2715 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2716 | { |
2717 | /* Add some entries to the .dynamic section. We fill in the | |
2718 | values later, in elf_i386_finish_dynamic_sections, but we | |
2719 | must add the entries now so that we get the correct size for | |
2720 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2721 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2722 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2723 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2724 | |
36af4a4e | 2725 | if (info->executable) |
252b5132 | 2726 | { |
dc810e39 | 2727 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2728 | return FALSE; |
252b5132 RH |
2729 | } |
2730 | ||
6de2ae4a | 2731 | if (htab->elf.splt->size != 0) |
252b5132 | 2732 | { |
dc810e39 AM |
2733 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2734 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2735 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
2736 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2737 | return FALSE; |
252b5132 RH |
2738 | } |
2739 | ||
2740 | if (relocs) | |
2741 | { | |
dc810e39 AM |
2742 | if (!add_dynamic_entry (DT_REL, 0) |
2743 | || !add_dynamic_entry (DT_RELSZ, 0) | |
2744 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 2745 | return FALSE; |
252b5132 | 2746 | |
0c715baa AM |
2747 | /* If any dynamic relocs apply to a read-only section, |
2748 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 2749 | if ((info->flags & DF_TEXTREL) == 0) |
eb4ff4d6 L |
2750 | elf_link_hash_traverse (&htab->elf, |
2751 | elf_i386_readonly_dynrelocs, info); | |
0c715baa AM |
2752 | |
2753 | if ((info->flags & DF_TEXTREL) != 0) | |
2754 | { | |
2755 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2756 | return FALSE; |
0c715baa | 2757 | } |
252b5132 | 2758 | } |
7a2b07ff NS |
2759 | if (htab->is_vxworks |
2760 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
2761 | return FALSE; | |
252b5132 | 2762 | } |
dc810e39 | 2763 | #undef add_dynamic_entry |
252b5132 | 2764 | |
b34976b6 | 2765 | return TRUE; |
252b5132 RH |
2766 | } |
2767 | ||
67a4f2b7 AO |
2768 | static bfd_boolean |
2769 | elf_i386_always_size_sections (bfd *output_bfd, | |
2770 | struct bfd_link_info *info) | |
2771 | { | |
2772 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
2773 | ||
2774 | if (tls_sec) | |
2775 | { | |
2776 | struct elf_link_hash_entry *tlsbase; | |
2777 | ||
2778 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
2779 | "_TLS_MODULE_BASE_", | |
2780 | FALSE, FALSE, FALSE); | |
2781 | ||
2782 | if (tlsbase && tlsbase->type == STT_TLS) | |
2783 | { | |
2784 | struct bfd_link_hash_entry *bh = NULL; | |
2785 | const struct elf_backend_data *bed | |
2786 | = get_elf_backend_data (output_bfd); | |
2787 | ||
2788 | if (!(_bfd_generic_link_add_one_symbol | |
2789 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
2790 | tls_sec, 0, NULL, FALSE, | |
2791 | bed->collect, &bh))) | |
2792 | return FALSE; | |
9f03412a AO |
2793 | |
2794 | elf_i386_hash_table (info)->tls_module_base = bh; | |
2795 | ||
67a4f2b7 AO |
2796 | tlsbase = (struct elf_link_hash_entry *)bh; |
2797 | tlsbase->def_regular = 1; | |
2798 | tlsbase->other = STV_HIDDEN; | |
2799 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
2800 | } | |
2801 | } | |
2802 | ||
2803 | return TRUE; | |
2804 | } | |
2805 | ||
38701953 AM |
2806 | /* Set the correct type for an x86 ELF section. We do this by the |
2807 | section name, which is a hack, but ought to work. */ | |
2808 | ||
b34976b6 | 2809 | static bfd_boolean |
55fd94b0 AM |
2810 | elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
2811 | Elf_Internal_Shdr *hdr, | |
2812 | asection *sec) | |
38701953 AM |
2813 | { |
2814 | register const char *name; | |
2815 | ||
2816 | name = bfd_get_section_name (abfd, sec); | |
2817 | ||
2818 | /* This is an ugly, but unfortunately necessary hack that is | |
2819 | needed when producing EFI binaries on x86. It tells | |
2820 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
2821 | containing ELF relocation info. We need this hack in order to | |
2822 | be able to generate ELF binaries that can be translated into | |
2823 | EFI applications (which are essentially COFF objects). Those | |
2824 | files contain a COFF ".reloc" section inside an ELFNN object, | |
2825 | which would normally cause BFD to segfault because it would | |
2826 | attempt to interpret this section as containing relocation | |
2827 | entries for section "oc". With this hack enabled, ".reloc" | |
2828 | will be treated as a normal data section, which will avoid the | |
2829 | segfault. However, you won't be able to create an ELFNN binary | |
2830 | with a section named "oc" that needs relocations, but that's | |
2831 | the kind of ugly side-effects you get when detecting section | |
2832 | types based on their names... In practice, this limitation is | |
2833 | unlikely to bite. */ | |
2834 | if (strcmp (name, ".reloc") == 0) | |
2835 | hdr->sh_type = SHT_PROGBITS; | |
2836 | ||
b34976b6 | 2837 | return TRUE; |
38701953 AM |
2838 | } |
2839 | ||
9f03412a AO |
2840 | /* _TLS_MODULE_BASE_ needs to be treated especially when linking |
2841 | executables. Rather than setting it to the beginning of the TLS | |
2842 | section, we have to set it to the end. This function may be called | |
2843 | multiple times, it is idempotent. */ | |
2844 | ||
2845 | static void | |
eb4ff4d6 | 2846 | elf_i386_set_tls_module_base (struct bfd_link_info *info) |
9f03412a AO |
2847 | { |
2848 | struct bfd_link_hash_entry *base; | |
2849 | ||
2850 | if (!info->executable) | |
2851 | return; | |
2852 | ||
2853 | base = elf_i386_hash_table (info)->tls_module_base; | |
2854 | ||
2855 | if (!base) | |
2856 | return; | |
2857 | ||
2858 | base->u.def.value = elf_hash_table (info)->tls_size; | |
2859 | } | |
2860 | ||
13ae64f3 JJ |
2861 | /* Return the base VMA address which should be subtracted from real addresses |
2862 | when resolving @dtpoff relocation. | |
2863 | This is PT_TLS segment p_vaddr. */ | |
2864 | ||
2865 | static bfd_vma | |
eb4ff4d6 | 2866 | elf_i386_dtpoff_base (struct bfd_link_info *info) |
13ae64f3 | 2867 | { |
e1918d23 AM |
2868 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2869 | if (elf_hash_table (info)->tls_sec == NULL) | |
6a30718d | 2870 | return 0; |
e1918d23 | 2871 | return elf_hash_table (info)->tls_sec->vma; |
13ae64f3 JJ |
2872 | } |
2873 | ||
2874 | /* Return the relocation value for @tpoff relocation | |
2875 | if STT_TLS virtual address is ADDRESS. */ | |
2876 | ||
2877 | static bfd_vma | |
eb4ff4d6 | 2878 | elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address) |
13ae64f3 | 2879 | { |
e1918d23 | 2880 | struct elf_link_hash_table *htab = elf_hash_table (info); |
13ae64f3 | 2881 | |
e1918d23 AM |
2882 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2883 | if (htab->tls_sec == NULL) | |
6a30718d | 2884 | return 0; |
e1918d23 | 2885 | return htab->tls_size + htab->tls_sec->vma - address; |
13ae64f3 JJ |
2886 | } |
2887 | ||
252b5132 RH |
2888 | /* Relocate an i386 ELF section. */ |
2889 | ||
b34976b6 | 2890 | static bfd_boolean |
55fd94b0 AM |
2891 | elf_i386_relocate_section (bfd *output_bfd, |
2892 | struct bfd_link_info *info, | |
2893 | bfd *input_bfd, | |
2894 | asection *input_section, | |
2895 | bfd_byte *contents, | |
2896 | Elf_Internal_Rela *relocs, | |
2897 | Elf_Internal_Sym *local_syms, | |
2898 | asection **local_sections) | |
252b5132 | 2899 | { |
6725bdbf | 2900 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2901 | Elf_Internal_Shdr *symtab_hdr; |
2902 | struct elf_link_hash_entry **sym_hashes; | |
2903 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 2904 | bfd_vma *local_tlsdesc_gotents; |
252b5132 RH |
2905 | Elf_Internal_Rela *rel; |
2906 | Elf_Internal_Rela *relend; | |
3348747a | 2907 | bfd_boolean is_vxworks_tls; |
252b5132 | 2908 | |
0ffa91dd NC |
2909 | BFD_ASSERT (is_i386_elf (input_bfd)); |
2910 | ||
6725bdbf | 2911 | htab = elf_i386_hash_table (info); |
0ffa91dd | 2912 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
252b5132 RH |
2913 | sym_hashes = elf_sym_hashes (input_bfd); |
2914 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
67a4f2b7 | 2915 | local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd); |
3348747a NS |
2916 | /* We have to handle relocations in vxworks .tls_vars sections |
2917 | specially, because the dynamic loader is 'weird'. */ | |
2918 | is_vxworks_tls = (htab->is_vxworks && info->shared | |
2919 | && !strcmp (input_section->output_section->name, | |
2920 | ".tls_vars")); | |
252b5132 | 2921 | |
eb4ff4d6 | 2922 | elf_i386_set_tls_module_base (info); |
9f03412a | 2923 | |
252b5132 RH |
2924 | rel = relocs; |
2925 | relend = relocs + input_section->reloc_count; | |
2926 | for (; rel < relend; rel++) | |
2927 | { | |
13ae64f3 | 2928 | unsigned int r_type; |
252b5132 RH |
2929 | reloc_howto_type *howto; |
2930 | unsigned long r_symndx; | |
2931 | struct elf_link_hash_entry *h; | |
2932 | Elf_Internal_Sym *sym; | |
2933 | asection *sec; | |
67a4f2b7 | 2934 | bfd_vma off, offplt; |
252b5132 | 2935 | bfd_vma relocation; |
b34976b6 | 2936 | bfd_boolean unresolved_reloc; |
252b5132 | 2937 | bfd_reloc_status_type r; |
1b452ec6 | 2938 | unsigned int indx; |
13ae64f3 | 2939 | int tls_type; |
252b5132 RH |
2940 | |
2941 | r_type = ELF32_R_TYPE (rel->r_info); | |
55fd94b0 AM |
2942 | if (r_type == R_386_GNU_VTINHERIT |
2943 | || r_type == R_386_GNU_VTENTRY) | |
252b5132 | 2944 | continue; |
dc47f327 | 2945 | |
55fd94b0 | 2946 | if ((indx = r_type) >= R_386_standard |
13ae64f3 JJ |
2947 | && ((indx = r_type - R_386_ext_offset) - R_386_standard |
2948 | >= R_386_ext - R_386_standard) | |
2949 | && ((indx = r_type - R_386_tls_offset) - R_386_ext | |
cbe950e9 | 2950 | >= R_386_irelative - R_386_ext)) |
252b5132 | 2951 | { |
6ba842b6 | 2952 | (*_bfd_error_handler) |
d003868e AM |
2953 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), |
2954 | input_bfd, input_section, r_type); | |
252b5132 | 2955 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 2956 | return FALSE; |
252b5132 | 2957 | } |
1b452ec6 | 2958 | howto = elf_howto_table + indx; |
252b5132 RH |
2959 | |
2960 | r_symndx = ELF32_R_SYM (rel->r_info); | |
252b5132 RH |
2961 | h = NULL; |
2962 | sym = NULL; | |
2963 | sec = NULL; | |
b34976b6 | 2964 | unresolved_reloc = FALSE; |
252b5132 RH |
2965 | if (r_symndx < symtab_hdr->sh_info) |
2966 | { | |
2967 | sym = local_syms + r_symndx; | |
2968 | sec = local_sections[r_symndx]; | |
2969 | relocation = (sec->output_section->vma | |
2970 | + sec->output_offset | |
2971 | + sym->st_value); | |
ab96bf03 AM |
2972 | |
2973 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
2974 | && ((sec->flags & SEC_MERGE) != 0 | |
2975 | || (info->relocatable | |
2976 | && sec->output_offset != 0))) | |
f8df10f4 | 2977 | { |
f8df10f4 | 2978 | bfd_vma addend; |
4a335f3d | 2979 | bfd_byte *where = contents + rel->r_offset; |
f8df10f4 | 2980 | |
4a335f3d | 2981 | switch (howto->size) |
f8df10f4 | 2982 | { |
4a335f3d AM |
2983 | case 0: |
2984 | addend = bfd_get_8 (input_bfd, where); | |
2985 | if (howto->pc_relative) | |
2986 | { | |
2987 | addend = (addend ^ 0x80) - 0x80; | |
2988 | addend += 1; | |
2989 | } | |
2990 | break; | |
2991 | case 1: | |
2992 | addend = bfd_get_16 (input_bfd, where); | |
2993 | if (howto->pc_relative) | |
2994 | { | |
2995 | addend = (addend ^ 0x8000) - 0x8000; | |
2996 | addend += 2; | |
2997 | } | |
2998 | break; | |
2999 | case 2: | |
3000 | addend = bfd_get_32 (input_bfd, where); | |
3001 | if (howto->pc_relative) | |
3002 | { | |
3003 | addend = (addend ^ 0x80000000) - 0x80000000; | |
3004 | addend += 4; | |
3005 | } | |
3006 | break; | |
3007 | default: | |
3008 | abort (); | |
f8df10f4 JJ |
3009 | } |
3010 | ||
ab96bf03 AM |
3011 | if (info->relocatable) |
3012 | addend += sec->output_offset; | |
3013 | else | |
3014 | { | |
3015 | asection *msec = sec; | |
3016 | addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, | |
3017 | addend); | |
3018 | addend -= relocation; | |
3019 | addend += msec->output_section->vma + msec->output_offset; | |
3020 | } | |
4a335f3d AM |
3021 | |
3022 | switch (howto->size) | |
3023 | { | |
3024 | case 0: | |
16a10388 | 3025 | /* FIXME: overflow checks. */ |
4a335f3d AM |
3026 | if (howto->pc_relative) |
3027 | addend -= 1; | |
3028 | bfd_put_8 (input_bfd, addend, where); | |
4a335f3d AM |
3029 | break; |
3030 | case 1: | |
3031 | if (howto->pc_relative) | |
3032 | addend -= 2; | |
3033 | bfd_put_16 (input_bfd, addend, where); | |
4a335f3d AM |
3034 | break; |
3035 | case 2: | |
3036 | if (howto->pc_relative) | |
3037 | addend -= 4; | |
3038 | bfd_put_32 (input_bfd, addend, where); | |
3039 | break; | |
3040 | } | |
f8df10f4 | 3041 | } |
c25bc9fc L |
3042 | else if (ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
3043 | { | |
3044 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
3045 | h = elf_i386_get_local_sym_hash (htab, input_bfd, | |
3046 | rel, FALSE); | |
3047 | if (h == NULL) | |
3048 | abort (); | |
3049 | ||
3050 | /* Set STT_GNU_IFUNC symbol value. */ | |
3051 | h->root.u.def.value = sym->st_value; | |
3052 | h->root.u.def.section = sec; | |
3053 | } | |
252b5132 RH |
3054 | } |
3055 | else | |
3056 | { | |
560e09e9 | 3057 | bfd_boolean warned; |
ffb2e45b | 3058 | |
b2a8e766 AM |
3059 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3060 | r_symndx, symtab_hdr, sym_hashes, | |
3061 | h, sec, relocation, | |
3062 | unresolved_reloc, warned); | |
252b5132 RH |
3063 | } |
3064 | ||
ab96bf03 | 3065 | if (sec != NULL && elf_discarded_section (sec)) |
9635fe29 | 3066 | { |
ab96bf03 AM |
3067 | /* For relocs against symbols from removed linkonce sections, |
3068 | or sections discarded by a linker script, we just want the | |
3069 | section contents zeroed. Avoid any special processing. */ | |
b1e24c02 | 3070 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); |
ab96bf03 AM |
3071 | rel->r_info = 0; |
3072 | rel->r_addend = 0; | |
b1e24c02 | 3073 | continue; |
9635fe29 AM |
3074 | } |
3075 | ||
ab96bf03 AM |
3076 | if (info->relocatable) |
3077 | continue; | |
3078 | ||
cbe950e9 L |
3079 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
3080 | it here if it is defined in a non-shared object. */ | |
3081 | if (h != NULL | |
3082 | && h->type == STT_GNU_IFUNC | |
3083 | && h->def_regular) | |
3084 | { | |
3085 | asection *plt, *gotplt, *base_got; | |
3086 | bfd_vma plt_index; | |
3087 | ||
3088 | if ((input_section->flags & SEC_ALLOC) == 0 | |
3089 | || h->plt.offset == (bfd_vma) -1) | |
3090 | abort (); | |
3091 | ||
3092 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
6de2ae4a | 3093 | if (htab->elf.splt != NULL) |
cbe950e9 | 3094 | { |
6de2ae4a L |
3095 | plt = htab->elf.splt; |
3096 | gotplt = htab->elf.sgotplt; | |
cbe950e9 L |
3097 | } |
3098 | else | |
3099 | { | |
6de2ae4a L |
3100 | plt = htab->elf.iplt; |
3101 | gotplt = htab->elf.igotplt; | |
cbe950e9 L |
3102 | } |
3103 | ||
3104 | relocation = (plt->output_section->vma | |
3105 | + plt->output_offset + h->plt.offset); | |
3106 | ||
3107 | switch (r_type) | |
3108 | { | |
3109 | default: | |
3110 | (*_bfd_error_handler) | |
3111 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
3112 | "symbol `%s' isn't handled by %s"), input_bfd, | |
3113 | elf_howto_table[r_type].name, | |
637fa7af L |
3114 | (h->root.root.string |
3115 | ? h->root.root.string : "a local symbol"), | |
3116 | __FUNCTION__); | |
cbe950e9 L |
3117 | bfd_set_error (bfd_error_bad_value); |
3118 | return FALSE; | |
3119 | ||
3120 | case R_386_32: | |
710ab287 L |
3121 | /* Generate dynamic relcoation only when there is a |
3122 | non-GOF reference in a shared object. */ | |
3123 | if (info->shared && h->non_got_ref) | |
3124 | { | |
3125 | Elf_Internal_Rela outrel; | |
3126 | bfd_byte *loc; | |
3127 | asection *sreloc; | |
3128 | bfd_vma offset; | |
3129 | ||
c25bc9fc L |
3130 | /* Need a dynamic relocation to get the real function |
3131 | adddress. */ | |
710ab287 L |
3132 | offset = _bfd_elf_section_offset (output_bfd, |
3133 | info, | |
3134 | input_section, | |
3135 | rel->r_offset); | |
3136 | if (offset == (bfd_vma) -1 | |
3137 | || offset == (bfd_vma) -2) | |
3138 | abort (); | |
3139 | ||
3140 | outrel.r_offset = (input_section->output_section->vma | |
3141 | + input_section->output_offset | |
3142 | + offset); | |
3143 | ||
3144 | if (h->dynindx == -1 | |
44c4ea11 L |
3145 | || h->forced_local |
3146 | || info->executable) | |
710ab287 L |
3147 | { |
3148 | /* This symbol is resolved locally. */ | |
3149 | outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE); | |
3150 | bfd_put_32 (output_bfd, | |
3151 | (h->root.u.def.value | |
3152 | + h->root.u.def.section->output_section->vma | |
3153 | + h->root.u.def.section->output_offset), | |
3154 | contents + offset); | |
3155 | } | |
3156 | else | |
3157 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
3158 | ||
6de2ae4a | 3159 | sreloc = htab->elf.irelifunc; |
710ab287 L |
3160 | loc = sreloc->contents; |
3161 | loc += (sreloc->reloc_count++ | |
3162 | * sizeof (Elf32_External_Rel)); | |
3163 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
3164 | ||
3165 | /* If this reloc is against an external symbol, we | |
3166 | do not want to fiddle with the addend. Otherwise, | |
3167 | we need to include the symbol value so that it | |
3168 | becomes an addend for the dynamic reloc. For an | |
3169 | internal symbol, we have updated addend. */ | |
3170 | continue; | |
3171 | } | |
3172 | ||
cbe950e9 L |
3173 | case R_386_PC32: |
3174 | case R_386_PLT32: | |
3175 | goto do_relocation; | |
3176 | ||
3177 | case R_386_GOT32: | |
6de2ae4a | 3178 | base_got = htab->elf.sgot; |
cbe950e9 L |
3179 | off = h->got.offset; |
3180 | ||
7afd84dc | 3181 | if (base_got == NULL) |
cbe950e9 L |
3182 | abort (); |
3183 | ||
7afd84dc | 3184 | if (off == (bfd_vma) -1) |
cbe950e9 | 3185 | { |
7afd84dc L |
3186 | /* We can't use h->got.offset here to save state, or |
3187 | even just remember the offset, as finish_dynamic_symbol | |
3188 | would use that as offset into .got. */ | |
3189 | ||
6de2ae4a | 3190 | if (htab->elf.splt != NULL) |
7afd84dc L |
3191 | { |
3192 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3193 | off = (plt_index + 3) * 4; | |
6de2ae4a | 3194 | base_got = htab->elf.sgotplt; |
7afd84dc | 3195 | } |
cbe950e9 L |
3196 | else |
3197 | { | |
7afd84dc L |
3198 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; |
3199 | off = plt_index * 4; | |
6de2ae4a | 3200 | base_got = htab->elf.igotplt; |
7afd84dc L |
3201 | } |
3202 | ||
3203 | if (h->dynindx == -1 | |
3204 | || h->forced_local | |
3205 | || info->symbolic) | |
3206 | { | |
3207 | /* This references the local defitionion. We must | |
3208 | initialize this entry in the global offset table. | |
3209 | Since the offset must always be a multiple of 8, | |
3210 | we use the least significant bit to record | |
3211 | whether we have initialized it already. | |
3212 | ||
3213 | When doing a dynamic link, we create a .rela.got | |
3214 | relocation entry to initialize the value. This | |
3215 | is done in the finish_dynamic_symbol routine. */ | |
3216 | if ((off & 1) != 0) | |
3217 | off &= ~1; | |
3218 | else | |
3219 | { | |
3220 | bfd_put_32 (output_bfd, relocation, | |
3221 | base_got->contents + off); | |
3222 | h->got.offset |= 1; | |
3223 | } | |
cbe950e9 | 3224 | } |
cbe950e9 | 3225 | |
7afd84dc | 3226 | relocation = off; |
cbe950e9 | 3227 | |
7afd84dc | 3228 | /* Adjust for static executables. */ |
6de2ae4a | 3229 | if (htab->elf.splt == NULL) |
7afd84dc L |
3230 | relocation += gotplt->output_offset; |
3231 | } | |
3232 | else | |
0018b0a3 L |
3233 | { |
3234 | relocation = (base_got->output_section->vma | |
3235 | + base_got->output_offset + off | |
3236 | - gotplt->output_section->vma | |
3237 | - gotplt->output_offset); | |
3238 | /* Adjust for static executables. */ | |
6de2ae4a | 3239 | if (htab->elf.splt == NULL) |
0018b0a3 L |
3240 | relocation += gotplt->output_offset; |
3241 | } | |
3242 | ||
cbe950e9 L |
3243 | goto do_relocation; |
3244 | ||
3245 | case R_386_GOTOFF: | |
3246 | relocation -= (gotplt->output_section->vma | |
3247 | + gotplt->output_offset); | |
3248 | goto do_relocation; | |
3249 | } | |
3250 | } | |
3251 | ||
252b5132 RH |
3252 | switch (r_type) |
3253 | { | |
3254 | case R_386_GOT32: | |
3255 | /* Relocation is to the entry for this symbol in the global | |
3256 | offset table. */ | |
6de2ae4a | 3257 | if (htab->elf.sgot == NULL) |
ffb2e45b | 3258 | abort (); |
252b5132 RH |
3259 | |
3260 | if (h != NULL) | |
3261 | { | |
b34976b6 | 3262 | bfd_boolean dyn; |
252b5132 RH |
3263 | |
3264 | off = h->got.offset; | |
ebe50bae | 3265 | dyn = htab->elf.dynamic_sections_created; |
26e41594 | 3266 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
252b5132 | 3267 | || (info->shared |
586119b3 | 3268 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
ef5aade5 L |
3269 | || (ELF_ST_VISIBILITY (h->other) |
3270 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
3271 | { |
3272 | /* This is actually a static link, or it is a | |
3273 | -Bsymbolic link and the symbol is defined | |
3274 | locally, or the symbol was forced to be local | |
3275 | because of a version file. We must initialize | |
3276 | this entry in the global offset table. Since the | |
3277 | offset must always be a multiple of 4, we use the | |
3278 | least significant bit to record whether we have | |
3279 | initialized it already. | |
3280 | ||
3281 | When doing a dynamic link, we create a .rel.got | |
3282 | relocation entry to initialize the value. This | |
3283 | is done in the finish_dynamic_symbol routine. */ | |
3284 | if ((off & 1) != 0) | |
3285 | off &= ~1; | |
3286 | else | |
3287 | { | |
3288 | bfd_put_32 (output_bfd, relocation, | |
6de2ae4a | 3289 | htab->elf.sgot->contents + off); |
252b5132 RH |
3290 | h->got.offset |= 1; |
3291 | } | |
3292 | } | |
8c694914 | 3293 | else |
b34976b6 | 3294 | unresolved_reloc = FALSE; |
252b5132 RH |
3295 | } |
3296 | else | |
3297 | { | |
ffb2e45b AM |
3298 | if (local_got_offsets == NULL) |
3299 | abort (); | |
252b5132 RH |
3300 | |
3301 | off = local_got_offsets[r_symndx]; | |
3302 | ||
3303 | /* The offset must always be a multiple of 4. We use | |
83be169b AM |
3304 | the least significant bit to record whether we have |
3305 | already generated the necessary reloc. */ | |
252b5132 RH |
3306 | if ((off & 1) != 0) |
3307 | off &= ~1; | |
3308 | else | |
3309 | { | |
6725bdbf | 3310 | bfd_put_32 (output_bfd, relocation, |
6de2ae4a | 3311 | htab->elf.sgot->contents + off); |
252b5132 RH |
3312 | |
3313 | if (info->shared) | |
3314 | { | |
947216bf AM |
3315 | asection *s; |
3316 | Elf_Internal_Rela outrel; | |
3317 | bfd_byte *loc; | |
252b5132 | 3318 | |
6de2ae4a | 3319 | s = htab->elf.srelgot; |
947216bf | 3320 | if (s == NULL) |
ffb2e45b | 3321 | abort (); |
252b5132 | 3322 | |
6de2ae4a L |
3323 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3324 | + htab->elf.sgot->output_offset | |
252b5132 RH |
3325 | + off); |
3326 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
947216bf AM |
3327 | loc = s->contents; |
3328 | loc += s->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3329 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
3330 | } |
3331 | ||
3332 | local_got_offsets[r_symndx] |= 1; | |
3333 | } | |
252b5132 RH |
3334 | } |
3335 | ||
ffb2e45b AM |
3336 | if (off >= (bfd_vma) -2) |
3337 | abort (); | |
3338 | ||
6de2ae4a L |
3339 | relocation = htab->elf.sgot->output_section->vma |
3340 | + htab->elf.sgot->output_offset + off | |
3341 | - htab->elf.sgotplt->output_section->vma | |
3342 | - htab->elf.sgotplt->output_offset; | |
252b5132 RH |
3343 | break; |
3344 | ||
3345 | case R_386_GOTOFF: | |
3346 | /* Relocation is relative to the start of the global offset | |
3347 | table. */ | |
3348 | ||
90f487df L |
3349 | /* Check to make sure it isn't a protected function symbol |
3350 | for shared library since it may not be local when used | |
41bed6dd L |
3351 | as function address. We also need to make sure that a |
3352 | symbol is defined locally. */ | |
3353 | if (info->shared && h) | |
90f487df | 3354 | { |
41bed6dd L |
3355 | if (!h->def_regular) |
3356 | { | |
3357 | const char *v; | |
3358 | ||
3359 | switch (ELF_ST_VISIBILITY (h->other)) | |
3360 | { | |
3361 | case STV_HIDDEN: | |
3362 | v = _("hidden symbol"); | |
3363 | break; | |
3364 | case STV_INTERNAL: | |
3365 | v = _("internal symbol"); | |
3366 | break; | |
3367 | case STV_PROTECTED: | |
3368 | v = _("protected symbol"); | |
3369 | break; | |
3370 | default: | |
3371 | v = _("symbol"); | |
3372 | break; | |
3373 | } | |
3374 | ||
3375 | (*_bfd_error_handler) | |
3376 | (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"), | |
3377 | input_bfd, v, h->root.root.string); | |
3378 | bfd_set_error (bfd_error_bad_value); | |
3379 | return FALSE; | |
3380 | } | |
3381 | else if (!info->executable | |
3382 | && h->type == STT_FUNC | |
3383 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
3384 | { | |
3385 | (*_bfd_error_handler) | |
3386 | (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"), | |
3387 | input_bfd, h->root.root.string); | |
3388 | bfd_set_error (bfd_error_bad_value); | |
3389 | return FALSE; | |
3390 | } | |
90f487df L |
3391 | } |
3392 | ||
8c37241b JJ |
3393 | /* Note that sgot is not involved in this |
3394 | calculation. We always want the start of .got.plt. If we | |
3395 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
252b5132 RH |
3396 | permitted by the ABI, we might have to change this |
3397 | calculation. */ | |
6de2ae4a L |
3398 | relocation -= htab->elf.sgotplt->output_section->vma |
3399 | + htab->elf.sgotplt->output_offset; | |
252b5132 RH |
3400 | break; |
3401 | ||
3402 | case R_386_GOTPC: | |
3403 | /* Use global offset table as symbol value. */ | |
6de2ae4a L |
3404 | relocation = htab->elf.sgotplt->output_section->vma |
3405 | + htab->elf.sgotplt->output_offset; | |
b34976b6 | 3406 | unresolved_reloc = FALSE; |
252b5132 RH |
3407 | break; |
3408 | ||
3409 | case R_386_PLT32: | |
3410 | /* Relocation is to the entry for this symbol in the | |
3411 | procedure linkage table. */ | |
3412 | ||
dd5724d5 | 3413 | /* Resolve a PLT32 reloc against a local symbol directly, |
83be169b | 3414 | without using the procedure linkage table. */ |
252b5132 RH |
3415 | if (h == NULL) |
3416 | break; | |
3417 | ||
dd5724d5 | 3418 | if (h->plt.offset == (bfd_vma) -1 |
6de2ae4a | 3419 | || htab->elf.splt == NULL) |
252b5132 RH |
3420 | { |
3421 | /* We didn't make a PLT entry for this symbol. This | |
83be169b AM |
3422 | happens when statically linking PIC code, or when |
3423 | using -Bsymbolic. */ | |
252b5132 RH |
3424 | break; |
3425 | } | |
3426 | ||
6de2ae4a L |
3427 | relocation = (htab->elf.splt->output_section->vma |
3428 | + htab->elf.splt->output_offset | |
252b5132 | 3429 | + h->plt.offset); |
b34976b6 | 3430 | unresolved_reloc = FALSE; |
252b5132 RH |
3431 | break; |
3432 | ||
3433 | case R_386_32: | |
3434 | case R_386_PC32: | |
3348747a NS |
3435 | if ((input_section->flags & SEC_ALLOC) == 0 |
3436 | || is_vxworks_tls) | |
ec338859 AM |
3437 | break; |
3438 | ||
12d0ee4a | 3439 | if ((info->shared |
ef5aade5 L |
3440 | && (h == NULL |
3441 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3442 | || h->root.type != bfd_link_hash_undefweak) | |
12d0ee4a | 3443 | && (r_type != R_386_PC32 |
f6c52c13 | 3444 | || !SYMBOL_CALLS_LOCAL (info, h))) |
a23b6845 AM |
3445 | || (ELIMINATE_COPY_RELOCS |
3446 | && !info->shared | |
12d0ee4a AM |
3447 | && h != NULL |
3448 | && h->dynindx != -1 | |
f5385ebf AM |
3449 | && !h->non_got_ref |
3450 | && ((h->def_dynamic | |
3451 | && !h->def_regular) | |
28d0b90e | 3452 | || h->root.type == bfd_link_hash_undefweak |
0f88be7a | 3453 | || h->root.type == bfd_link_hash_undefined))) |
252b5132 | 3454 | { |
947216bf AM |
3455 | Elf_Internal_Rela outrel; |
3456 | bfd_byte *loc; | |
b34976b6 | 3457 | bfd_boolean skip, relocate; |
0c715baa | 3458 | asection *sreloc; |
252b5132 RH |
3459 | |
3460 | /* When generating a shared object, these relocations | |
3461 | are copied into the output file to be resolved at run | |
3462 | time. */ | |
3463 | ||
b34976b6 AM |
3464 | skip = FALSE; |
3465 | relocate = FALSE; | |
252b5132 | 3466 | |
c629eae0 JJ |
3467 | outrel.r_offset = |
3468 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
3469 | rel->r_offset); | |
3470 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 3471 | skip = TRUE; |
0bb2d96a | 3472 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3473 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
3474 | outrel.r_offset += (input_section->output_section->vma |
3475 | + input_section->output_offset); | |
3476 | ||
3477 | if (skip) | |
0bb2d96a | 3478 | memset (&outrel, 0, sizeof outrel); |
5a15f56f AM |
3479 | else if (h != NULL |
3480 | && h->dynindx != -1 | |
3481 | && (r_type == R_386_PC32 | |
3482 | || !info->shared | |
55255dae | 3483 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 3484 | || !h->def_regular)) |
0bb2d96a | 3485 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
3486 | else |
3487 | { | |
5a15f56f | 3488 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 3489 | relocate = TRUE; |
5a15f56f | 3490 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
252b5132 RH |
3491 | } |
3492 | ||
cbe950e9 | 3493 | sreloc = elf_section_data (input_section)->sreloc; |
e7c33416 NC |
3494 | |
3495 | BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL); | |
0c715baa | 3496 | |
947216bf AM |
3497 | loc = sreloc->contents; |
3498 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
e7c33416 | 3499 | |
0c715baa | 3500 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
3501 | |
3502 | /* If this reloc is against an external symbol, we do | |
3503 | not want to fiddle with the addend. Otherwise, we | |
3504 | need to include the symbol value so that it becomes | |
3505 | an addend for the dynamic reloc. */ | |
0f88be7a | 3506 | if (! relocate) |
252b5132 RH |
3507 | continue; |
3508 | } | |
252b5132 RH |
3509 | break; |
3510 | ||
37e55690 JJ |
3511 | case R_386_TLS_IE: |
3512 | if (info->shared) | |
3513 | { | |
947216bf AM |
3514 | Elf_Internal_Rela outrel; |
3515 | bfd_byte *loc; | |
37e55690 | 3516 | asection *sreloc; |
37e55690 JJ |
3517 | |
3518 | outrel.r_offset = rel->r_offset | |
3519 | + input_section->output_section->vma | |
3520 | + input_section->output_offset; | |
3521 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
3522 | sreloc = elf_section_data (input_section)->sreloc; | |
3523 | if (sreloc == NULL) | |
3524 | abort (); | |
947216bf AM |
3525 | loc = sreloc->contents; |
3526 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
3527 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3528 | } | |
3529 | /* Fall through */ | |
3530 | ||
13ae64f3 | 3531 | case R_386_TLS_GD: |
67a4f2b7 AO |
3532 | case R_386_TLS_GOTDESC: |
3533 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 3534 | case R_386_TLS_IE_32: |
37e55690 | 3535 | case R_386_TLS_GOTIE: |
13ae64f3 JJ |
3536 | tls_type = GOT_UNKNOWN; |
3537 | if (h == NULL && local_got_offsets) | |
3538 | tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx]; | |
3539 | else if (h != NULL) | |
142411ca | 3540 | tls_type = elf_i386_hash_entry(h)->tls_type; |
37e55690 JJ |
3541 | if (tls_type == GOT_TLS_IE) |
3542 | tls_type = GOT_TLS_IE_NEG; | |
142411ca L |
3543 | |
3544 | if (! elf_i386_tls_transition (info, input_bfd, | |
3545 | input_section, contents, | |
3546 | symtab_hdr, sym_hashes, | |
3547 | &r_type, tls_type, rel, | |
3548 | relend, h)) | |
3549 | return FALSE; | |
13ae64f3 JJ |
3550 | |
3551 | if (r_type == R_386_TLS_LE_32) | |
3552 | { | |
82e51918 | 3553 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
3554 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
3555 | { | |
142411ca | 3556 | unsigned int type; |
13ae64f3 JJ |
3557 | bfd_vma roff; |
3558 | ||
3559 | /* GD->LE transition. */ | |
13ae64f3 | 3560 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
3561 | if (type == 0x04) |
3562 | { | |
3563 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
3564 | Change it into: | |
3565 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
3566 | (6 byte form of subl). */ | |
13ae64f3 JJ |
3567 | memcpy (contents + rel->r_offset - 3, |
3568 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
142411ca | 3569 | roff = rel->r_offset + 5; |
13ae64f3 JJ |
3570 | } |
3571 | else | |
3572 | { | |
142411ca L |
3573 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop |
3574 | Change it into: | |
3575 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
3576 | (6 byte form of subl). */ | |
3577 | memcpy (contents + rel->r_offset - 2, | |
3578 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
3579 | roff = rel->r_offset + 6; | |
13ae64f3 | 3580 | } |
eb4ff4d6 | 3581 | bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation), |
13ae64f3 | 3582 | contents + roff); |
a3fadc9a | 3583 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
3584 | rel++; |
3585 | continue; | |
3586 | } | |
67a4f2b7 AO |
3587 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
3588 | { | |
3589 | /* GDesc -> LE transition. | |
3590 | It's originally something like: | |
3591 | leal x@tlsdesc(%ebx), %eax | |
3592 | ||
3593 | leal x@ntpoff, %eax | |
3594 | ||
3595 | Registers other than %eax may be set up here. */ | |
3596 | ||
142411ca | 3597 | unsigned int val; |
67a4f2b7 AO |
3598 | bfd_vma roff; |
3599 | ||
67a4f2b7 | 3600 | roff = rel->r_offset; |
67a4f2b7 | 3601 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
3602 | |
3603 | /* Now modify the instruction as appropriate. */ | |
3604 | /* aoliva FIXME: remove the above and xor the byte | |
3605 | below with 0x86. */ | |
3606 | bfd_put_8 (output_bfd, val ^ 0x86, | |
3607 | contents + roff - 1); | |
eb4ff4d6 | 3608 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
67a4f2b7 AO |
3609 | contents + roff); |
3610 | continue; | |
3611 | } | |
3612 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
3613 | { | |
3614 | /* GDesc -> LE transition. | |
3615 | It's originally: | |
3616 | call *(%eax) | |
3617 | Turn it into: | |
142411ca | 3618 | xchg %ax,%ax */ |
67a4f2b7 | 3619 | |
67a4f2b7 | 3620 | bfd_vma roff; |
142411ca | 3621 | |
67a4f2b7 | 3622 | roff = rel->r_offset; |
10efb593 | 3623 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
3624 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3625 | continue; | |
3626 | } | |
37e55690 | 3627 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE) |
13ae64f3 | 3628 | { |
142411ca | 3629 | unsigned int val; |
13ae64f3 JJ |
3630 | |
3631 | /* IE->LE transition: | |
37e55690 JJ |
3632 | Originally it can be one of: |
3633 | movl foo, %eax | |
3634 | movl foo, %reg | |
3635 | addl foo, %reg | |
3636 | We change it into: | |
3637 | movl $foo, %eax | |
3638 | movl $foo, %reg | |
3639 | addl $foo, %reg. */ | |
37e55690 | 3640 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
37e55690 JJ |
3641 | if (val == 0xa1) |
3642 | { | |
3643 | /* movl foo, %eax. */ | |
55fd94b0 AM |
3644 | bfd_put_8 (output_bfd, 0xb8, |
3645 | contents + rel->r_offset - 1); | |
37e55690 | 3646 | } |
299bf759 | 3647 | else |
37e55690 | 3648 | { |
142411ca L |
3649 | unsigned int type; |
3650 | ||
55fd94b0 AM |
3651 | type = bfd_get_8 (input_bfd, |
3652 | contents + rel->r_offset - 2); | |
299bf759 | 3653 | switch (type) |
26e41594 | 3654 | { |
299bf759 L |
3655 | case 0x8b: |
3656 | /* movl */ | |
299bf759 L |
3657 | bfd_put_8 (output_bfd, 0xc7, |
3658 | contents + rel->r_offset - 2); | |
3659 | bfd_put_8 (output_bfd, | |
3660 | 0xc0 | ((val >> 3) & 7), | |
3661 | contents + rel->r_offset - 1); | |
3662 | break; | |
3663 | case 0x03: | |
3664 | /* addl */ | |
299bf759 L |
3665 | bfd_put_8 (output_bfd, 0x81, |
3666 | contents + rel->r_offset - 2); | |
3667 | bfd_put_8 (output_bfd, | |
3668 | 0xc0 | ((val >> 3) & 7), | |
3669 | contents + rel->r_offset - 1); | |
3670 | break; | |
3671 | default: | |
3672 | BFD_FAIL (); | |
3673 | break; | |
26e41594 | 3674 | } |
37e55690 | 3675 | } |
eb4ff4d6 | 3676 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
37e55690 JJ |
3677 | contents + rel->r_offset); |
3678 | continue; | |
3679 | } | |
3680 | else | |
3681 | { | |
3682 | unsigned int val, type; | |
3683 | ||
3684 | /* {IE_32,GOTIE}->LE transition: | |
3685 | Originally it can be one of: | |
13ae64f3 | 3686 | subl foo(%reg1), %reg2 |
13ae64f3 | 3687 | movl foo(%reg1), %reg2 |
37e55690 | 3688 | addl foo(%reg1), %reg2 |
13ae64f3 JJ |
3689 | We change it into: |
3690 | subl $foo, %reg2 | |
37e55690 JJ |
3691 | movl $foo, %reg2 (6 byte form) |
3692 | addl $foo, %reg2. */ | |
13ae64f3 JJ |
3693 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
3694 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
13ae64f3 JJ |
3695 | if (type == 0x8b) |
3696 | { | |
3697 | /* movl */ | |
13ae64f3 JJ |
3698 | bfd_put_8 (output_bfd, 0xc7, |
3699 | contents + rel->r_offset - 2); | |
3700 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3701 | contents + rel->r_offset - 1); | |
3702 | } | |
3703 | else if (type == 0x2b) | |
3704 | { | |
3705 | /* subl */ | |
13ae64f3 JJ |
3706 | bfd_put_8 (output_bfd, 0x81, |
3707 | contents + rel->r_offset - 2); | |
3708 | bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), | |
3709 | contents + rel->r_offset - 1); | |
3710 | } | |
37e55690 JJ |
3711 | else if (type == 0x03) |
3712 | { | |
3713 | /* addl */ | |
3714 | bfd_put_8 (output_bfd, 0x81, | |
3715 | contents + rel->r_offset - 2); | |
3716 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3717 | contents + rel->r_offset - 1); | |
3718 | } | |
13ae64f3 JJ |
3719 | else |
3720 | BFD_FAIL (); | |
37e55690 | 3721 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE) |
eb4ff4d6 | 3722 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
37e55690 JJ |
3723 | contents + rel->r_offset); |
3724 | else | |
eb4ff4d6 | 3725 | bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation), |
37e55690 | 3726 | contents + rel->r_offset); |
13ae64f3 JJ |
3727 | continue; |
3728 | } | |
3729 | } | |
3730 | ||
6de2ae4a | 3731 | if (htab->elf.sgot == NULL) |
13ae64f3 JJ |
3732 | abort (); |
3733 | ||
3734 | if (h != NULL) | |
67a4f2b7 AO |
3735 | { |
3736 | off = h->got.offset; | |
3737 | offplt = elf_i386_hash_entry (h)->tlsdesc_got; | |
3738 | } | |
13ae64f3 JJ |
3739 | else |
3740 | { | |
3741 | if (local_got_offsets == NULL) | |
3742 | abort (); | |
3743 | ||
3744 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3745 | offplt = local_tlsdesc_gotents[r_symndx]; |
13ae64f3 JJ |
3746 | } |
3747 | ||
3748 | if ((off & 1) != 0) | |
3749 | off &= ~1; | |
26e41594 | 3750 | else |
13ae64f3 | 3751 | { |
947216bf AM |
3752 | Elf_Internal_Rela outrel; |
3753 | bfd_byte *loc; | |
13ae64f3 | 3754 | int dr_type, indx; |
67a4f2b7 | 3755 | asection *sreloc; |
13ae64f3 | 3756 | |
6de2ae4a | 3757 | if (htab->elf.srelgot == NULL) |
13ae64f3 JJ |
3758 | abort (); |
3759 | ||
67a4f2b7 AO |
3760 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
3761 | ||
3762 | if (GOT_TLS_GDESC_P (tls_type)) | |
3763 | { | |
3764 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC); | |
3765 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8 | |
6de2ae4a L |
3766 | <= htab->elf.sgotplt->size); |
3767 | outrel.r_offset = (htab->elf.sgotplt->output_section->vma | |
3768 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3769 | + offplt |
3770 | + htab->sgotplt_jump_table_size); | |
6de2ae4a | 3771 | sreloc = htab->elf.srelplt; |
67a4f2b7 | 3772 | loc = sreloc->contents; |
5ae0bfb6 RS |
3773 | loc += (htab->next_tls_desc_index++ |
3774 | * sizeof (Elf32_External_Rel)); | |
67a4f2b7 AO |
3775 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) |
3776 | <= sreloc->contents + sreloc->size); | |
3777 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
3778 | if (indx == 0) | |
3779 | { | |
3780 | BFD_ASSERT (! unresolved_reloc); | |
3781 | bfd_put_32 (output_bfd, | |
eb4ff4d6 | 3782 | relocation - elf_i386_dtpoff_base (info), |
6de2ae4a | 3783 | htab->elf.sgotplt->contents + offplt |
67a4f2b7 AO |
3784 | + htab->sgotplt_jump_table_size + 4); |
3785 | } | |
3786 | else | |
3787 | { | |
3788 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 3789 | htab->elf.sgotplt->contents + offplt |
67a4f2b7 AO |
3790 | + htab->sgotplt_jump_table_size + 4); |
3791 | } | |
3792 | } | |
3793 | ||
6de2ae4a | 3794 | sreloc = htab->elf.srelgot; |
67a4f2b7 | 3795 | |
6de2ae4a L |
3796 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3797 | + htab->elf.sgot->output_offset + off); | |
13ae64f3 | 3798 | |
67a4f2b7 | 3799 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 | 3800 | dr_type = R_386_TLS_DTPMOD32; |
67a4f2b7 AO |
3801 | else if (GOT_TLS_GDESC_P (tls_type)) |
3802 | goto dr_done; | |
37e55690 JJ |
3803 | else if (tls_type == GOT_TLS_IE_POS) |
3804 | dr_type = R_386_TLS_TPOFF; | |
13ae64f3 JJ |
3805 | else |
3806 | dr_type = R_386_TLS_TPOFF32; | |
67a4f2b7 | 3807 | |
37e55690 | 3808 | if (dr_type == R_386_TLS_TPOFF && indx == 0) |
eb4ff4d6 L |
3809 | bfd_put_32 (output_bfd, |
3810 | relocation - elf_i386_dtpoff_base (info), | |
6de2ae4a | 3811 | htab->elf.sgot->contents + off); |
37e55690 | 3812 | else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) |
eb4ff4d6 L |
3813 | bfd_put_32 (output_bfd, |
3814 | elf_i386_dtpoff_base (info) - relocation, | |
6de2ae4a | 3815 | htab->elf.sgot->contents + off); |
67a4f2b7 | 3816 | else if (dr_type != R_386_TLS_DESC) |
c366c25e | 3817 | bfd_put_32 (output_bfd, 0, |
6de2ae4a | 3818 | htab->elf.sgot->contents + off); |
13ae64f3 | 3819 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
67a4f2b7 AO |
3820 | |
3821 | loc = sreloc->contents; | |
3822 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
3823 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) | |
3824 | <= sreloc->contents + sreloc->size); | |
13ae64f3 JJ |
3825 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3826 | ||
67a4f2b7 | 3827 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 JJ |
3828 | { |
3829 | if (indx == 0) | |
3830 | { | |
82e51918 | 3831 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 | 3832 | bfd_put_32 (output_bfd, |
eb4ff4d6 | 3833 | relocation - elf_i386_dtpoff_base (info), |
6de2ae4a | 3834 | htab->elf.sgot->contents + off + 4); |
13ae64f3 JJ |
3835 | } |
3836 | else | |
3837 | { | |
3838 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 3839 | htab->elf.sgot->contents + off + 4); |
13ae64f3 JJ |
3840 | outrel.r_info = ELF32_R_INFO (indx, |
3841 | R_386_TLS_DTPOFF32); | |
3842 | outrel.r_offset += 4; | |
67a4f2b7 | 3843 | sreloc->reloc_count++; |
947216bf | 3844 | loc += sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
3845 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) |
3846 | <= sreloc->contents + sreloc->size); | |
947216bf | 3847 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
13ae64f3 JJ |
3848 | } |
3849 | } | |
37e55690 JJ |
3850 | else if (tls_type == GOT_TLS_IE_BOTH) |
3851 | { | |
3852 | bfd_put_32 (output_bfd, | |
eb4ff4d6 L |
3853 | (indx == 0 |
3854 | ? relocation - elf_i386_dtpoff_base (info) | |
3855 | : 0), | |
6de2ae4a | 3856 | htab->elf.sgot->contents + off + 4); |
37e55690 JJ |
3857 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); |
3858 | outrel.r_offset += 4; | |
67a4f2b7 | 3859 | sreloc->reloc_count++; |
947216bf | 3860 | loc += sizeof (Elf32_External_Rel); |
37e55690 JJ |
3861 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3862 | } | |
13ae64f3 | 3863 | |
67a4f2b7 | 3864 | dr_done: |
13ae64f3 JJ |
3865 | if (h != NULL) |
3866 | h->got.offset |= 1; | |
3867 | else | |
3868 | local_got_offsets[r_symndx] |= 1; | |
3869 | } | |
3870 | ||
67a4f2b7 AO |
3871 | if (off >= (bfd_vma) -2 |
3872 | && ! GOT_TLS_GDESC_P (tls_type)) | |
13ae64f3 | 3873 | abort (); |
67a4f2b7 AO |
3874 | if (r_type == R_386_TLS_GOTDESC |
3875 | || r_type == R_386_TLS_DESC_CALL) | |
3876 | { | |
3877 | relocation = htab->sgotplt_jump_table_size + offplt; | |
3878 | unresolved_reloc = FALSE; | |
3879 | } | |
3880 | else if (r_type == ELF32_R_TYPE (rel->r_info)) | |
13ae64f3 | 3881 | { |
6de2ae4a L |
3882 | bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma |
3883 | + htab->elf.sgotplt->output_offset; | |
3884 | relocation = htab->elf.sgot->output_section->vma | |
3885 | + htab->elf.sgot->output_offset + off - g_o_t; | |
37e55690 JJ |
3886 | if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) |
3887 | && tls_type == GOT_TLS_IE_BOTH) | |
3888 | relocation += 4; | |
3889 | if (r_type == R_386_TLS_IE) | |
8c37241b | 3890 | relocation += g_o_t; |
b34976b6 | 3891 | unresolved_reloc = FALSE; |
13ae64f3 | 3892 | } |
67a4f2b7 | 3893 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
13ae64f3 JJ |
3894 | { |
3895 | unsigned int val, type; | |
3896 | bfd_vma roff; | |
3897 | ||
3898 | /* GD->IE transition. */ | |
13ae64f3 | 3899 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
3900 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
3901 | if (type == 0x04) | |
3902 | { | |
3903 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
3904 | Change it into: | |
3905 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 | 3906 | val >>= 3; |
142411ca | 3907 | roff = rel->r_offset - 3; |
13ae64f3 JJ |
3908 | } |
3909 | else | |
3910 | { | |
3911 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
3912 | Change it into: | |
3913 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 JJ |
3914 | roff = rel->r_offset - 2; |
3915 | } | |
3916 | memcpy (contents + roff, | |
3917 | "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); | |
3918 | contents[roff + 7] = 0x80 | (val & 7); | |
37e55690 JJ |
3919 | /* If foo is used only with foo@gotntpoff(%reg) and |
3920 | foo@indntpoff, but not with foo@gottpoff(%reg), change | |
3921 | subl $foo@gottpoff(%reg), %eax | |
3922 | into: | |
3923 | addl $foo@gotntpoff(%reg), %eax. */ | |
ebcfb3c0 JJ |
3924 | if (tls_type == GOT_TLS_IE_POS) |
3925 | contents[roff + 6] = 0x03; | |
8c37241b | 3926 | bfd_put_32 (output_bfd, |
6de2ae4a L |
3927 | htab->elf.sgot->output_section->vma |
3928 | + htab->elf.sgot->output_offset + off | |
3929 | - htab->elf.sgotplt->output_section->vma | |
3930 | - htab->elf.sgotplt->output_offset, | |
13ae64f3 JJ |
3931 | contents + roff + 8); |
3932 | /* Skip R_386_PLT32. */ | |
3933 | rel++; | |
3934 | continue; | |
3935 | } | |
67a4f2b7 AO |
3936 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
3937 | { | |
3938 | /* GDesc -> IE transition. | |
3939 | It's originally something like: | |
3940 | leal x@tlsdesc(%ebx), %eax | |
3941 | ||
3942 | Change it to: | |
142411ca | 3943 | movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax |
67a4f2b7 AO |
3944 | or: |
3945 | movl x@gottpoff(%ebx), %eax # before negl %eax | |
3946 | ||
3947 | Registers other than %eax may be set up here. */ | |
3948 | ||
67a4f2b7 AO |
3949 | bfd_vma roff; |
3950 | ||
3951 | /* First, make sure it's a leal adding ebx to a 32-bit | |
3952 | offset into any register, although it's probably | |
3953 | almost always going to be eax. */ | |
3954 | roff = rel->r_offset; | |
67a4f2b7 AO |
3955 | |
3956 | /* Now modify the instruction as appropriate. */ | |
3957 | /* To turn a leal into a movl in the form we use it, it | |
3958 | suffices to change the first byte from 0x8d to 0x8b. | |
3959 | aoliva FIXME: should we decide to keep the leal, all | |
3960 | we have to do is remove the statement below, and | |
3961 | adjust the relaxation of R_386_TLS_DESC_CALL. */ | |
3962 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
3963 | ||
3964 | if (tls_type == GOT_TLS_IE_BOTH) | |
3965 | off += 4; | |
3966 | ||
3967 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
3968 | htab->elf.sgot->output_section->vma |
3969 | + htab->elf.sgot->output_offset + off | |
3970 | - htab->elf.sgotplt->output_section->vma | |
3971 | - htab->elf.sgotplt->output_offset, | |
67a4f2b7 AO |
3972 | contents + roff); |
3973 | continue; | |
3974 | } | |
3975 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
3976 | { | |
3977 | /* GDesc -> IE transition. | |
3978 | It's originally: | |
3979 | call *(%eax) | |
3980 | ||
3981 | Change it to: | |
142411ca | 3982 | xchg %ax,%ax |
67a4f2b7 AO |
3983 | or |
3984 | negl %eax | |
3985 | depending on how we transformed the TLS_GOTDESC above. | |
3986 | */ | |
3987 | ||
67a4f2b7 AO |
3988 | bfd_vma roff; |
3989 | ||
67a4f2b7 | 3990 | roff = rel->r_offset; |
67a4f2b7 AO |
3991 | |
3992 | /* Now modify the instruction as appropriate. */ | |
3993 | if (tls_type != GOT_TLS_IE_NEG) | |
3994 | { | |
10efb593 L |
3995 | /* xchg %ax,%ax */ |
3996 | bfd_put_8 (output_bfd, 0x66, contents + roff); | |
67a4f2b7 AO |
3997 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3998 | } | |
3999 | else | |
4000 | { | |
4001 | /* negl %eax */ | |
4002 | bfd_put_8 (output_bfd, 0xf7, contents + roff); | |
4003 | bfd_put_8 (output_bfd, 0xd8, contents + roff + 1); | |
4004 | } | |
4005 | ||
4006 | continue; | |
4007 | } | |
4008 | else | |
4009 | BFD_ASSERT (FALSE); | |
13ae64f3 JJ |
4010 | break; |
4011 | ||
4012 | case R_386_TLS_LDM: | |
142411ca L |
4013 | if (! elf_i386_tls_transition (info, input_bfd, |
4014 | input_section, contents, | |
4015 | symtab_hdr, sym_hashes, | |
4016 | &r_type, GOT_UNKNOWN, rel, | |
4017 | relend, h)) | |
4018 | return FALSE; | |
13ae64f3 | 4019 | |
142411ca L |
4020 | if (r_type != R_386_TLS_LDM) |
4021 | { | |
13ae64f3 | 4022 | /* LD->LE transition: |
13ae64f3 JJ |
4023 | leal foo(%reg), %eax; call ___tls_get_addr. |
4024 | We change it into: | |
4025 | movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */ | |
142411ca | 4026 | BFD_ASSERT (r_type == R_386_TLS_LE_32); |
13ae64f3 JJ |
4027 | memcpy (contents + rel->r_offset - 2, |
4028 | "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); | |
a3fadc9a | 4029 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
4030 | rel++; |
4031 | continue; | |
4032 | } | |
4033 | ||
6de2ae4a | 4034 | if (htab->elf.sgot == NULL) |
13ae64f3 JJ |
4035 | abort (); |
4036 | ||
4037 | off = htab->tls_ldm_got.offset; | |
4038 | if (off & 1) | |
4039 | off &= ~1; | |
4040 | else | |
4041 | { | |
947216bf AM |
4042 | Elf_Internal_Rela outrel; |
4043 | bfd_byte *loc; | |
13ae64f3 | 4044 | |
6de2ae4a | 4045 | if (htab->elf.srelgot == NULL) |
13ae64f3 JJ |
4046 | abort (); |
4047 | ||
6de2ae4a L |
4048 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
4049 | + htab->elf.sgot->output_offset + off); | |
13ae64f3 JJ |
4050 | |
4051 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 4052 | htab->elf.sgot->contents + off); |
13ae64f3 | 4053 | bfd_put_32 (output_bfd, 0, |
6de2ae4a | 4054 | htab->elf.sgot->contents + off + 4); |
13ae64f3 | 4055 | outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); |
6de2ae4a L |
4056 | loc = htab->elf.srelgot->contents; |
4057 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
4058 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
4059 | htab->tls_ldm_got.offset |= 1; | |
4060 | } | |
6de2ae4a L |
4061 | relocation = htab->elf.sgot->output_section->vma |
4062 | + htab->elf.sgot->output_offset + off | |
4063 | - htab->elf.sgotplt->output_section->vma | |
4064 | - htab->elf.sgotplt->output_offset; | |
b34976b6 | 4065 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
4066 | break; |
4067 | ||
4068 | case R_386_TLS_LDO_32: | |
a45bb67d | 4069 | if (info->shared || (input_section->flags & SEC_CODE) == 0) |
eb4ff4d6 | 4070 | relocation -= elf_i386_dtpoff_base (info); |
13ae64f3 JJ |
4071 | else |
4072 | /* When converting LDO to LE, we must negate. */ | |
eb4ff4d6 | 4073 | relocation = -elf_i386_tpoff (info, relocation); |
13ae64f3 JJ |
4074 | break; |
4075 | ||
4076 | case R_386_TLS_LE_32: | |
13ae64f3 | 4077 | case R_386_TLS_LE: |
37e55690 JJ |
4078 | if (info->shared) |
4079 | { | |
947216bf | 4080 | Elf_Internal_Rela outrel; |
37e55690 | 4081 | asection *sreloc; |
947216bf | 4082 | bfd_byte *loc; |
37e55690 JJ |
4083 | int indx; |
4084 | ||
4085 | outrel.r_offset = rel->r_offset | |
4086 | + input_section->output_section->vma | |
4087 | + input_section->output_offset; | |
4088 | if (h != NULL && h->dynindx != -1) | |
4089 | indx = h->dynindx; | |
4090 | else | |
4091 | indx = 0; | |
4092 | if (r_type == R_386_TLS_LE_32) | |
4093 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); | |
4094 | else | |
4095 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
4096 | sreloc = elf_section_data (input_section)->sreloc; | |
4097 | if (sreloc == NULL) | |
4098 | abort (); | |
947216bf AM |
4099 | loc = sreloc->contents; |
4100 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
4101 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
4102 | if (indx) | |
4103 | continue; | |
4104 | else if (r_type == R_386_TLS_LE_32) | |
eb4ff4d6 | 4105 | relocation = elf_i386_dtpoff_base (info) - relocation; |
37e55690 | 4106 | else |
eb4ff4d6 | 4107 | relocation -= elf_i386_dtpoff_base (info); |
37e55690 JJ |
4108 | } |
4109 | else if (r_type == R_386_TLS_LE_32) | |
eb4ff4d6 | 4110 | relocation = elf_i386_tpoff (info, relocation); |
37e55690 | 4111 | else |
eb4ff4d6 | 4112 | relocation = -elf_i386_tpoff (info, relocation); |
13ae64f3 JJ |
4113 | break; |
4114 | ||
252b5132 RH |
4115 | default: |
4116 | break; | |
4117 | } | |
4118 | ||
239e1f3a AM |
4119 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
4120 | because such sections are not SEC_ALLOC and thus ld.so will | |
4121 | not process them. */ | |
8c694914 | 4122 | if (unresolved_reloc |
239e1f3a | 4123 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 4124 | && h->def_dynamic)) |
6a30718d JJ |
4125 | { |
4126 | (*_bfd_error_handler) | |
843fe662 | 4127 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
4128 | input_bfd, |
4129 | input_section, | |
6a30718d | 4130 | (long) rel->r_offset, |
843fe662 | 4131 | howto->name, |
6a30718d | 4132 | h->root.root.string); |
b34976b6 | 4133 | return FALSE; |
6a30718d | 4134 | } |
83be169b | 4135 | |
cbe950e9 | 4136 | do_relocation: |
252b5132 RH |
4137 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
4138 | contents, rel->r_offset, | |
55fd94b0 | 4139 | relocation, 0); |
252b5132 | 4140 | |
cf5c0c5b | 4141 | if (r != bfd_reloc_ok) |
252b5132 | 4142 | { |
cf5c0c5b | 4143 | const char *name; |
ffb2e45b | 4144 | |
cf5c0c5b AM |
4145 | if (h != NULL) |
4146 | name = h->root.root.string; | |
4147 | else | |
4148 | { | |
4149 | name = bfd_elf_string_from_elf_section (input_bfd, | |
4150 | symtab_hdr->sh_link, | |
4151 | sym->st_name); | |
4152 | if (name == NULL) | |
b34976b6 | 4153 | return FALSE; |
cf5c0c5b AM |
4154 | if (*name == '\0') |
4155 | name = bfd_section_name (input_bfd, sec); | |
4156 | } | |
ffb2e45b | 4157 | |
cf5c0c5b AM |
4158 | if (r == bfd_reloc_overflow) |
4159 | { | |
cf5c0c5b | 4160 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
4161 | (info, (h ? &h->root : NULL), name, howto->name, |
4162 | (bfd_vma) 0, input_bfd, input_section, | |
4163 | rel->r_offset))) | |
b34976b6 | 4164 | return FALSE; |
cf5c0c5b AM |
4165 | } |
4166 | else | |
4167 | { | |
4168 | (*_bfd_error_handler) | |
d003868e AM |
4169 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
4170 | input_bfd, input_section, | |
cf5c0c5b | 4171 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 4172 | return FALSE; |
cf5c0c5b | 4173 | } |
252b5132 RH |
4174 | } |
4175 | } | |
4176 | ||
b34976b6 | 4177 | return TRUE; |
252b5132 RH |
4178 | } |
4179 | ||
4180 | /* Finish up dynamic symbol handling. We set the contents of various | |
4181 | dynamic sections here. */ | |
4182 | ||
b34976b6 | 4183 | static bfd_boolean |
55fd94b0 AM |
4184 | elf_i386_finish_dynamic_symbol (bfd *output_bfd, |
4185 | struct bfd_link_info *info, | |
4186 | struct elf_link_hash_entry *h, | |
4187 | Elf_Internal_Sym *sym) | |
252b5132 | 4188 | { |
6725bdbf | 4189 | struct elf_i386_link_hash_table *htab; |
252b5132 | 4190 | |
6725bdbf | 4191 | htab = elf_i386_hash_table (info); |
252b5132 RH |
4192 | |
4193 | if (h->plt.offset != (bfd_vma) -1) | |
4194 | { | |
252b5132 RH |
4195 | bfd_vma plt_index; |
4196 | bfd_vma got_offset; | |
947216bf AM |
4197 | Elf_Internal_Rela rel; |
4198 | bfd_byte *loc; | |
cbe950e9 L |
4199 | asection *plt, *gotplt, *relplt; |
4200 | ||
4201 | /* When building a static executable, use .iplt, .igot.plt and | |
4202 | .rel.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 4203 | if (htab->elf.splt != NULL) |
cbe950e9 | 4204 | { |
6de2ae4a L |
4205 | plt = htab->elf.splt; |
4206 | gotplt = htab->elf.sgotplt; | |
4207 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
4208 | } |
4209 | else | |
4210 | { | |
6de2ae4a L |
4211 | plt = htab->elf.iplt; |
4212 | gotplt = htab->elf.igotplt; | |
4213 | relplt = htab->elf.irelplt; | |
cbe950e9 | 4214 | } |
252b5132 RH |
4215 | |
4216 | /* This symbol has an entry in the procedure linkage table. Set | |
4217 | it up. */ | |
4218 | ||
cbe950e9 L |
4219 | if ((h->dynindx == -1 |
4220 | && !((h->forced_local || info->executable) | |
4221 | && h->def_regular | |
4222 | && h->type == STT_GNU_IFUNC)) | |
4223 | || plt == NULL | |
4224 | || gotplt == NULL | |
4225 | || relplt == NULL) | |
ffb2e45b | 4226 | abort (); |
252b5132 RH |
4227 | |
4228 | /* Get the index in the procedure linkage table which | |
4229 | corresponds to this symbol. This is the index of this symbol | |
4230 | in all the symbols for which we are making plt entries. The | |
cbe950e9 | 4231 | first entry in the procedure linkage table is reserved. |
252b5132 | 4232 | |
cbe950e9 | 4233 | Get the offset into the .got table of the entry that |
252b5132 | 4234 | corresponds to this function. Each .got entry is 4 bytes. |
cbe950e9 L |
4235 | The first three are reserved. |
4236 | ||
4237 | For static executables, we don't reserve anything. */ | |
4238 | ||
6de2ae4a | 4239 | if (plt == htab->elf.splt) |
cbe950e9 L |
4240 | { |
4241 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
4242 | got_offset = (plt_index + 3) * 4; | |
4243 | } | |
4244 | else | |
4245 | { | |
4246 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
4247 | got_offset = plt_index * 4; | |
4248 | } | |
252b5132 RH |
4249 | |
4250 | /* Fill in the entry in the procedure linkage table. */ | |
4251 | if (! info->shared) | |
4252 | { | |
cbe950e9 | 4253 | memcpy (plt->contents + h->plt.offset, elf_i386_plt_entry, |
252b5132 RH |
4254 | PLT_ENTRY_SIZE); |
4255 | bfd_put_32 (output_bfd, | |
cbe950e9 L |
4256 | (gotplt->output_section->vma |
4257 | + gotplt->output_offset | |
252b5132 | 4258 | + got_offset), |
cbe950e9 | 4259 | plt->contents + h->plt.offset + 2); |
eac338cf PB |
4260 | |
4261 | if (htab->is_vxworks) | |
4262 | { | |
4263 | int s, k, reloc_index; | |
4264 | ||
4265 | /* Create the R_386_32 relocation referencing the GOT | |
4266 | for this PLT entry. */ | |
4267 | ||
4268 | /* S: Current slot number (zero-based). */ | |
4269 | s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
4270 | /* K: Number of relocations for PLTResolve. */ | |
4271 | if (info->shared) | |
4272 | k = PLTRESOLVE_RELOCS_SHLIB; | |
4273 | else | |
4274 | k = PLTRESOLVE_RELOCS; | |
4275 | /* Skip the PLTresolve relocations, and the relocations for | |
4276 | the other PLT slots. */ | |
4277 | reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS; | |
4278 | loc = (htab->srelplt2->contents + reloc_index | |
4279 | * sizeof (Elf32_External_Rel)); | |
4280 | ||
6de2ae4a L |
4281 | rel.r_offset = (htab->elf.splt->output_section->vma |
4282 | + htab->elf.splt->output_offset | |
eac338cf | 4283 | + h->plt.offset + 2), |
7325306f | 4284 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4285 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
4286 | ||
4287 | /* Create the R_386_32 relocation referencing the beginning of | |
4288 | the PLT for this GOT entry. */ | |
6de2ae4a L |
4289 | rel.r_offset = (htab->elf.sgotplt->output_section->vma |
4290 | + htab->elf.sgotplt->output_offset | |
eac338cf | 4291 | + got_offset); |
7325306f | 4292 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf PB |
4293 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
4294 | loc + sizeof (Elf32_External_Rel)); | |
4295 | } | |
252b5132 RH |
4296 | } |
4297 | else | |
4298 | { | |
cbe950e9 | 4299 | memcpy (plt->contents + h->plt.offset, elf_i386_pic_plt_entry, |
252b5132 RH |
4300 | PLT_ENTRY_SIZE); |
4301 | bfd_put_32 (output_bfd, got_offset, | |
cbe950e9 | 4302 | plt->contents + h->plt.offset + 2); |
252b5132 RH |
4303 | } |
4304 | ||
cbe950e9 | 4305 | /* Don't fill PLT entry for static executables. */ |
6de2ae4a | 4306 | if (plt == htab->elf.splt) |
cbe950e9 L |
4307 | { |
4308 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel), | |
4309 | plt->contents + h->plt.offset + 7); | |
4310 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), | |
4311 | plt->contents + h->plt.offset + 12); | |
4312 | } | |
252b5132 RH |
4313 | |
4314 | /* Fill in the entry in the global offset table. */ | |
4315 | bfd_put_32 (output_bfd, | |
cbe950e9 L |
4316 | (plt->output_section->vma |
4317 | + plt->output_offset | |
252b5132 RH |
4318 | + h->plt.offset |
4319 | + 6), | |
cbe950e9 | 4320 | gotplt->contents + got_offset); |
252b5132 RH |
4321 | |
4322 | /* Fill in the entry in the .rel.plt section. */ | |
cbe950e9 L |
4323 | rel.r_offset = (gotplt->output_section->vma |
4324 | + gotplt->output_offset | |
252b5132 | 4325 | + got_offset); |
cbe950e9 L |
4326 | if (h->dynindx == -1 |
4327 | || ((info->executable | |
4328 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
4329 | && h->def_regular | |
4330 | && h->type == STT_GNU_IFUNC)) | |
4331 | { | |
4332 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
4333 | R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend | |
4334 | in the .got.plt section. */ | |
4335 | bfd_put_32 (output_bfd, | |
4336 | (h->root.u.def.value | |
4337 | + h->root.u.def.section->output_section->vma | |
4338 | + h->root.u.def.section->output_offset), | |
4339 | gotplt->contents + got_offset); | |
4340 | rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE); | |
4341 | } | |
4342 | else | |
4343 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); | |
4344 | loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 4345 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 | 4346 | |
f5385ebf | 4347 | if (!h->def_regular) |
252b5132 RH |
4348 | { |
4349 | /* Mark the symbol as undefined, rather than as defined in | |
c6585bbb JJ |
4350 | the .plt section. Leave the value if there were any |
4351 | relocations where pointer equality matters (this is a clue | |
51b64d56 AM |
4352 | for the dynamic linker, to make function pointer |
4353 | comparisons work between an application and shared | |
c6585bbb JJ |
4354 | library), otherwise set it to zero. If a function is only |
4355 | called from a binary, there is no need to slow down | |
4356 | shared libraries because of that. */ | |
252b5132 | 4357 | sym->st_shndx = SHN_UNDEF; |
f5385ebf | 4358 | if (!h->pointer_equality_needed) |
c6585bbb | 4359 | sym->st_value = 0; |
252b5132 RH |
4360 | } |
4361 | } | |
4362 | ||
13ae64f3 | 4363 | if (h->got.offset != (bfd_vma) -1 |
67a4f2b7 | 4364 | && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type) |
37e55690 | 4365 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0) |
252b5132 | 4366 | { |
947216bf AM |
4367 | Elf_Internal_Rela rel; |
4368 | bfd_byte *loc; | |
252b5132 RH |
4369 | |
4370 | /* This symbol has an entry in the global offset table. Set it | |
4371 | up. */ | |
4372 | ||
6de2ae4a | 4373 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
ffb2e45b | 4374 | abort (); |
252b5132 | 4375 | |
6de2ae4a L |
4376 | rel.r_offset = (htab->elf.sgot->output_section->vma |
4377 | + htab->elf.sgot->output_offset | |
dc810e39 | 4378 | + (h->got.offset & ~(bfd_vma) 1)); |
252b5132 | 4379 | |
dd5724d5 AM |
4380 | /* If this is a static link, or it is a -Bsymbolic link and the |
4381 | symbol is defined locally or was forced to be local because | |
4382 | of a version file, we just want to emit a RELATIVE reloc. | |
252b5132 RH |
4383 | The entry in the global offset table will already have been |
4384 | initialized in the relocate_section function. */ | |
710ab287 | 4385 | if (h->def_regular |
0018b0a3 L |
4386 | && h->type == STT_GNU_IFUNC) |
4387 | { | |
710ab287 L |
4388 | if (info->shared) |
4389 | { | |
4390 | /* Generate R_386_GLOB_DAT. */ | |
4391 | goto do_glob_dat; | |
4392 | } | |
4393 | else | |
4394 | { | |
4395 | if (!h->pointer_equality_needed) | |
4396 | abort (); | |
4397 | ||
4398 | /* For non-shared object, we can't use .got.plt, which | |
4399 | contains the real function addres if we need pointer | |
4400 | equality. We load the GOT entry with the PLT entry. */ | |
6de2ae4a | 4401 | asection *plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
710ab287 L |
4402 | bfd_put_32 (output_bfd, |
4403 | (plt->output_section->vma | |
4404 | + plt->output_offset + h->plt.offset), | |
6de2ae4a | 4405 | htab->elf.sgot->contents + h->got.offset); |
710ab287 L |
4406 | return TRUE; |
4407 | } | |
0018b0a3 L |
4408 | } |
4409 | else if (info->shared | |
4410 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
dd5724d5 | 4411 | { |
6725bdbf | 4412 | BFD_ASSERT((h->got.offset & 1) != 0); |
dd5724d5 AM |
4413 | rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
4414 | } | |
252b5132 RH |
4415 | else |
4416 | { | |
dd5724d5 | 4417 | BFD_ASSERT((h->got.offset & 1) == 0); |
710ab287 | 4418 | do_glob_dat: |
6725bdbf | 4419 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
6de2ae4a | 4420 | htab->elf.sgot->contents + h->got.offset); |
252b5132 RH |
4421 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); |
4422 | } | |
4423 | ||
6de2ae4a L |
4424 | loc = htab->elf.srelgot->contents; |
4425 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 4426 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
4427 | } |
4428 | ||
f5385ebf | 4429 | if (h->needs_copy) |
252b5132 | 4430 | { |
947216bf AM |
4431 | Elf_Internal_Rela rel; |
4432 | bfd_byte *loc; | |
252b5132 RH |
4433 | |
4434 | /* This symbol needs a copy reloc. Set it up. */ | |
4435 | ||
ffb2e45b AM |
4436 | if (h->dynindx == -1 |
4437 | || (h->root.type != bfd_link_hash_defined | |
4438 | && h->root.type != bfd_link_hash_defweak) | |
4439 | || htab->srelbss == NULL) | |
4440 | abort (); | |
252b5132 RH |
4441 | |
4442 | rel.r_offset = (h->root.u.def.value | |
4443 | + h->root.u.def.section->output_section->vma | |
4444 | + h->root.u.def.section->output_offset); | |
4445 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); | |
947216bf AM |
4446 | loc = htab->srelbss->contents; |
4447 | loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 4448 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
4449 | } |
4450 | ||
c25bc9fc L |
4451 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may |
4452 | be NULL for local symbols. | |
4453 | ||
eac338cf PB |
4454 | On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it |
4455 | is relative to the ".got" section. */ | |
c25bc9fc L |
4456 | if (sym != NULL |
4457 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4458 | || (!htab->is_vxworks && h == htab->elf.hgot))) | |
252b5132 RH |
4459 | sym->st_shndx = SHN_ABS; |
4460 | ||
b34976b6 | 4461 | return TRUE; |
252b5132 RH |
4462 | } |
4463 | ||
c25bc9fc L |
4464 | /* Finish up local dynamic symbol handling. We set the contents of |
4465 | various dynamic sections here. */ | |
4466 | ||
4467 | static bfd_boolean | |
4468 | elf_i386_finish_local_dynamic_symbol (void **slot, void *inf) | |
4469 | { | |
4470 | struct elf_link_hash_entry *h | |
4471 | = (struct elf_link_hash_entry *) *slot; | |
4472 | struct bfd_link_info *info | |
4473 | = (struct bfd_link_info *) inf; | |
4474 | ||
4475 | return elf_i386_finish_dynamic_symbol (info->output_bfd, info, | |
4476 | h, NULL); | |
4477 | } | |
4478 | ||
38701953 AM |
4479 | /* Used to decide how to sort relocs in an optimal manner for the |
4480 | dynamic linker, before writing them out. */ | |
4481 | ||
4482 | static enum elf_reloc_type_class | |
55fd94b0 | 4483 | elf_i386_reloc_type_class (const Elf_Internal_Rela *rela) |
38701953 | 4484 | { |
55fd94b0 | 4485 | switch (ELF32_R_TYPE (rela->r_info)) |
38701953 AM |
4486 | { |
4487 | case R_386_RELATIVE: | |
4488 | return reloc_class_relative; | |
4489 | case R_386_JUMP_SLOT: | |
4490 | return reloc_class_plt; | |
4491 | case R_386_COPY: | |
4492 | return reloc_class_copy; | |
4493 | default: | |
4494 | return reloc_class_normal; | |
4495 | } | |
4496 | } | |
4497 | ||
252b5132 RH |
4498 | /* Finish up the dynamic sections. */ |
4499 | ||
b34976b6 | 4500 | static bfd_boolean |
55fd94b0 AM |
4501 | elf_i386_finish_dynamic_sections (bfd *output_bfd, |
4502 | struct bfd_link_info *info) | |
252b5132 | 4503 | { |
6725bdbf | 4504 | struct elf_i386_link_hash_table *htab; |
252b5132 | 4505 | bfd *dynobj; |
252b5132 RH |
4506 | asection *sdyn; |
4507 | ||
6725bdbf | 4508 | htab = elf_i386_hash_table (info); |
ebe50bae | 4509 | dynobj = htab->elf.dynobj; |
252b5132 RH |
4510 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
4511 | ||
ebe50bae | 4512 | if (htab->elf.dynamic_sections_created) |
252b5132 | 4513 | { |
252b5132 RH |
4514 | Elf32_External_Dyn *dyncon, *dynconend; |
4515 | ||
6de2ae4a | 4516 | if (sdyn == NULL || htab->elf.sgot == NULL) |
ffb2e45b | 4517 | abort (); |
252b5132 RH |
4518 | |
4519 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4520 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4521 | for (; dyncon < dynconend; dyncon++) |
4522 | { | |
4523 | Elf_Internal_Dyn dyn; | |
51b64d56 | 4524 | asection *s; |
252b5132 RH |
4525 | |
4526 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4527 | ||
4528 | switch (dyn.d_tag) | |
4529 | { | |
4530 | default: | |
7a2b07ff NS |
4531 | if (htab->is_vxworks |
4532 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
4533 | break; | |
0ac8d2ca | 4534 | continue; |
252b5132 RH |
4535 | |
4536 | case DT_PLTGOT: | |
6de2ae4a | 4537 | s = htab->elf.sgotplt; |
8c37241b | 4538 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
6725bdbf AM |
4539 | break; |
4540 | ||
252b5132 | 4541 | case DT_JMPREL: |
6de2ae4a | 4542 | s = htab->elf.srelplt; |
6348e046 | 4543 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
252b5132 RH |
4544 | break; |
4545 | ||
4546 | case DT_PLTRELSZ: | |
6de2ae4a | 4547 | s = htab->elf.srelplt; |
eea6121a | 4548 | dyn.d_un.d_val = s->size; |
252b5132 RH |
4549 | break; |
4550 | ||
4551 | case DT_RELSZ: | |
4552 | /* My reading of the SVR4 ABI indicates that the | |
4553 | procedure linkage table relocs (DT_JMPREL) should be | |
4554 | included in the overall relocs (DT_REL). This is | |
4555 | what Solaris does. However, UnixWare can not handle | |
4556 | that case. Therefore, we override the DT_RELSZ entry | |
6348e046 | 4557 | here to make it not include the JMPREL relocs. */ |
6de2ae4a | 4558 | s = htab->elf.srelplt; |
6348e046 AM |
4559 | if (s == NULL) |
4560 | continue; | |
eea6121a | 4561 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
4562 | break; |
4563 | ||
4564 | case DT_REL: | |
4565 | /* We may not be using the standard ELF linker script. | |
4566 | If .rel.plt is the first .rel section, we adjust | |
4567 | DT_REL to not include it. */ | |
6de2ae4a | 4568 | s = htab->elf.srelplt; |
6348e046 AM |
4569 | if (s == NULL) |
4570 | continue; | |
4571 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
4572 | continue; | |
eea6121a | 4573 | dyn.d_un.d_ptr += s->size; |
252b5132 RH |
4574 | break; |
4575 | } | |
0ac8d2ca AM |
4576 | |
4577 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
4578 | } |
4579 | ||
4580 | /* Fill in the first entry in the procedure linkage table. */ | |
6de2ae4a | 4581 | if (htab->elf.splt && htab->elf.splt->size > 0) |
252b5132 RH |
4582 | { |
4583 | if (info->shared) | |
eac338cf | 4584 | { |
6de2ae4a | 4585 | memcpy (htab->elf.splt->contents, elf_i386_pic_plt0_entry, |
eac338cf | 4586 | sizeof (elf_i386_pic_plt0_entry)); |
6de2ae4a | 4587 | memset (htab->elf.splt->contents + sizeof (elf_i386_pic_plt0_entry), |
eac338cf PB |
4588 | htab->plt0_pad_byte, |
4589 | PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry)); | |
4590 | } | |
252b5132 RH |
4591 | else |
4592 | { | |
6de2ae4a | 4593 | memcpy (htab->elf.splt->contents, elf_i386_plt0_entry, |
eac338cf | 4594 | sizeof(elf_i386_plt0_entry)); |
6de2ae4a | 4595 | memset (htab->elf.splt->contents + sizeof (elf_i386_plt0_entry), |
eac338cf PB |
4596 | htab->plt0_pad_byte, |
4597 | PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry)); | |
252b5132 | 4598 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4599 | (htab->elf.sgotplt->output_section->vma |
4600 | + htab->elf.sgotplt->output_offset | |
6725bdbf | 4601 | + 4), |
6de2ae4a | 4602 | htab->elf.splt->contents + 2); |
252b5132 | 4603 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4604 | (htab->elf.sgotplt->output_section->vma |
4605 | + htab->elf.sgotplt->output_offset | |
6725bdbf | 4606 | + 8), |
6de2ae4a | 4607 | htab->elf.splt->contents + 8); |
eac338cf PB |
4608 | |
4609 | if (htab->is_vxworks) | |
4610 | { | |
4611 | Elf_Internal_Rela rel; | |
7325306f | 4612 | |
eac338cf PB |
4613 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4. |
4614 | On IA32 we use REL relocations so the addend goes in | |
4615 | the PLT directly. */ | |
6de2ae4a L |
4616 | rel.r_offset = (htab->elf.splt->output_section->vma |
4617 | + htab->elf.splt->output_offset | |
eac338cf | 4618 | + 2); |
7325306f | 4619 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4620 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
4621 | htab->srelplt2->contents); | |
4622 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
6de2ae4a L |
4623 | rel.r_offset = (htab->elf.splt->output_section->vma |
4624 | + htab->elf.splt->output_offset | |
eac338cf | 4625 | + 8); |
7325306f | 4626 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4627 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
4628 | htab->srelplt2->contents + | |
4629 | sizeof (Elf32_External_Rel)); | |
4630 | } | |
252b5132 RH |
4631 | } |
4632 | ||
4633 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
4634 | really seem like the right value. */ | |
6de2ae4a | 4635 | elf_section_data (htab->elf.splt->output_section) |
6725bdbf | 4636 | ->this_hdr.sh_entsize = 4; |
eac338cf PB |
4637 | |
4638 | /* Correct the .rel.plt.unloaded relocations. */ | |
4639 | if (htab->is_vxworks && !info->shared) | |
4640 | { | |
6de2ae4a | 4641 | int num_plts = (htab->elf.splt->size / PLT_ENTRY_SIZE) - 1; |
4c9b0de6 | 4642 | unsigned char *p; |
eac338cf PB |
4643 | |
4644 | p = htab->srelplt2->contents; | |
4645 | if (info->shared) | |
4646 | p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel); | |
4647 | else | |
4648 | p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel); | |
4649 | ||
4650 | for (; num_plts; num_plts--) | |
4651 | { | |
4652 | Elf_Internal_Rela rel; | |
4653 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 4654 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4655 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
4656 | p += sizeof (Elf32_External_Rel); | |
4657 | ||
4658 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 4659 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf PB |
4660 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
4661 | p += sizeof (Elf32_External_Rel); | |
4662 | } | |
4663 | } | |
252b5132 RH |
4664 | } |
4665 | } | |
4666 | ||
6de2ae4a | 4667 | if (htab->elf.sgotplt) |
252b5132 | 4668 | { |
12d0ee4a | 4669 | /* Fill in the first three entries in the global offset table. */ |
6de2ae4a | 4670 | if (htab->elf.sgotplt->size > 0) |
12d0ee4a AM |
4671 | { |
4672 | bfd_put_32 (output_bfd, | |
55fd94b0 | 4673 | (sdyn == NULL ? 0 |
12d0ee4a | 4674 | : sdyn->output_section->vma + sdyn->output_offset), |
6de2ae4a L |
4675 | htab->elf.sgotplt->contents); |
4676 | bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4); | |
4677 | bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8); | |
12d0ee4a | 4678 | } |
252b5132 | 4679 | |
6de2ae4a | 4680 | elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4; |
12d0ee4a | 4681 | } |
8c37241b | 4682 | |
6de2ae4a L |
4683 | if (htab->elf.sgot && htab->elf.sgot->size > 0) |
4684 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4; | |
8c37241b | 4685 | |
c25bc9fc L |
4686 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
4687 | htab_traverse (htab->loc_hash_table, | |
4688 | elf_i386_finish_local_dynamic_symbol, | |
4689 | info); | |
4690 | ||
b34976b6 | 4691 | return TRUE; |
252b5132 RH |
4692 | } |
4693 | ||
4c45e5c9 JJ |
4694 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4695 | or (bfd_vma) -1 if it should not be included. */ | |
4696 | ||
4697 | static bfd_vma | |
4698 | elf_i386_plt_sym_val (bfd_vma i, const asection *plt, | |
4699 | const arelent *rel ATTRIBUTE_UNUSED) | |
4700 | { | |
4701 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
4702 | } | |
4703 | ||
fdc90cb4 JJ |
4704 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
4705 | ||
4706 | static bfd_boolean | |
4707 | elf_i386_hash_symbol (struct elf_link_hash_entry *h) | |
4708 | { | |
4709 | if (h->plt.offset != (bfd_vma) -1 | |
4710 | && !h->def_regular | |
4711 | && !h->pointer_equality_needed) | |
4712 | return FALSE; | |
4713 | ||
4714 | return _bfd_elf_hash_symbol (h); | |
4715 | } | |
4c45e5c9 | 4716 | |
d8045f23 NC |
4717 | /* Hook called by the linker routine which adds symbols from an object |
4718 | file. */ | |
4719 | ||
4720 | static bfd_boolean | |
4721 | elf_i386_add_symbol_hook (bfd * abfd ATTRIBUTE_UNUSED, | |
4722 | struct bfd_link_info * info ATTRIBUTE_UNUSED, | |
4723 | Elf_Internal_Sym * sym, | |
4724 | const char ** namep ATTRIBUTE_UNUSED, | |
4725 | flagword * flagsp ATTRIBUTE_UNUSED, | |
4726 | asection ** secp ATTRIBUTE_UNUSED, | |
4727 | bfd_vma * valp ATTRIBUTE_UNUSED) | |
4728 | { | |
4729 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
4730 | elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE; | |
4731 | ||
4732 | return TRUE; | |
4733 | } | |
4734 | ||
252b5132 RH |
4735 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vec |
4736 | #define TARGET_LITTLE_NAME "elf32-i386" | |
4737 | #define ELF_ARCH bfd_arch_i386 | |
4738 | #define ELF_MACHINE_CODE EM_386 | |
4739 | #define ELF_MAXPAGESIZE 0x1000 | |
252b5132 RH |
4740 | |
4741 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4742 | #define elf_backend_can_refcount 1 |
252b5132 RH |
4743 | #define elf_backend_want_got_plt 1 |
4744 | #define elf_backend_plt_readonly 1 | |
4745 | #define elf_backend_want_plt_sym 0 | |
4746 | #define elf_backend_got_header_size 12 | |
252b5132 | 4747 | |
8c29f035 AM |
4748 | /* Support RELA for objdump of prelink objects. */ |
4749 | #define elf_info_to_howto elf_i386_info_to_howto_rel | |
dd5724d5 AM |
4750 | #define elf_info_to_howto_rel elf_i386_info_to_howto_rel |
4751 | ||
13ae64f3 | 4752 | #define bfd_elf32_mkobject elf_i386_mkobject |
13ae64f3 | 4753 | |
dd5724d5 AM |
4754 | #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name |
4755 | #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create | |
c25bc9fc | 4756 | #define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free |
dd5724d5 | 4757 | #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup |
13285a1b | 4758 | #define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup |
dd5724d5 AM |
4759 | |
4760 | #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol | |
13285a1b | 4761 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
dd5724d5 | 4762 | #define elf_backend_check_relocs elf_i386_check_relocs |
0ac8d2ca | 4763 | #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol |
6725bdbf | 4764 | #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections |
0ac8d2ca | 4765 | #define elf_backend_fake_sections elf_i386_fake_sections |
dd5724d5 AM |
4766 | #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections |
4767 | #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol | |
4768 | #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook | |
4769 | #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook | |
c5fccbec DJ |
4770 | #define elf_backend_grok_prstatus elf_i386_grok_prstatus |
4771 | #define elf_backend_grok_psinfo elf_i386_grok_psinfo | |
db6751f2 | 4772 | #define elf_backend_reloc_type_class elf_i386_reloc_type_class |
0ac8d2ca AM |
4773 | #define elf_backend_relocate_section elf_i386_relocate_section |
4774 | #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections | |
67a4f2b7 | 4775 | #define elf_backend_always_size_sections elf_i386_always_size_sections |
74541ad4 AM |
4776 | #define elf_backend_omit_section_dynsym \ |
4777 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
4c45e5c9 | 4778 | #define elf_backend_plt_sym_val elf_i386_plt_sym_val |
fdc90cb4 | 4779 | #define elf_backend_hash_symbol elf_i386_hash_symbol |
d8045f23 NC |
4780 | #define elf_backend_add_symbol_hook elf_i386_add_symbol_hook |
4781 | #undef elf_backend_post_process_headers | |
4782 | #define elf_backend_post_process_headers _bfd_elf_set_osabi | |
dd5724d5 | 4783 | |
252b5132 | 4784 | #include "elf32-target.h" |
2bc3c89a AM |
4785 | |
4786 | /* FreeBSD support. */ | |
4787 | ||
4788 | #undef TARGET_LITTLE_SYM | |
4789 | #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec | |
4790 | #undef TARGET_LITTLE_NAME | |
4791 | #define TARGET_LITTLE_NAME "elf32-i386-freebsd" | |
d1036acb L |
4792 | #undef ELF_OSABI |
4793 | #define ELF_OSABI ELFOSABI_FREEBSD | |
2bc3c89a AM |
4794 | |
4795 | /* The kernel recognizes executables as valid only if they carry a | |
4796 | "FreeBSD" label in the ELF header. So we put this label on all | |
4797 | executables and (for simplicity) also all other object files. */ | |
4798 | ||
2bc3c89a | 4799 | static void |
d8045f23 | 4800 | elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info) |
2bc3c89a | 4801 | { |
d8045f23 | 4802 | _bfd_elf_set_osabi (abfd, info); |
2bc3c89a | 4803 | |
2bc3c89a AM |
4804 | #ifdef OLD_FREEBSD_ABI_LABEL |
4805 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
4806 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
caf47ea6 | 4807 | #endif |
2bc3c89a AM |
4808 | } |
4809 | ||
4810 | #undef elf_backend_post_process_headers | |
d8045f23 | 4811 | #define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers |
571fe01f NC |
4812 | #undef elf32_bed |
4813 | #define elf32_bed elf32_i386_fbsd_bed | |
2bc3c89a | 4814 | |
d8045f23 NC |
4815 | #undef elf_backend_add_symbol_hook |
4816 | ||
2bc3c89a | 4817 | #include "elf32-target.h" |
eac338cf PB |
4818 | |
4819 | /* VxWorks support. */ | |
4820 | ||
4821 | #undef TARGET_LITTLE_SYM | |
4822 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec | |
4823 | #undef TARGET_LITTLE_NAME | |
4824 | #define TARGET_LITTLE_NAME "elf32-i386-vxworks" | |
d1036acb | 4825 | #undef ELF_OSABI |
eac338cf PB |
4826 | |
4827 | /* Like elf_i386_link_hash_table_create but with tweaks for VxWorks. */ | |
4828 | ||
4829 | static struct bfd_link_hash_table * | |
4830 | elf_i386_vxworks_link_hash_table_create (bfd *abfd) | |
4831 | { | |
4832 | struct bfd_link_hash_table *ret; | |
4833 | struct elf_i386_link_hash_table *htab; | |
4834 | ||
4835 | ret = elf_i386_link_hash_table_create (abfd); | |
4836 | if (ret) | |
4837 | { | |
4838 | htab = (struct elf_i386_link_hash_table *) ret; | |
4839 | htab->is_vxworks = 1; | |
4840 | htab->plt0_pad_byte = 0x90; | |
4841 | } | |
4842 | ||
4843 | return ret; | |
4844 | } | |
4845 | ||
4846 | ||
13285a1b AM |
4847 | #undef elf_backend_relocs_compatible |
4848 | #undef elf_backend_post_process_headers | |
eac338cf PB |
4849 | #undef bfd_elf32_bfd_link_hash_table_create |
4850 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4851 | elf_i386_vxworks_link_hash_table_create | |
4852 | #undef elf_backend_add_symbol_hook | |
4853 | #define elf_backend_add_symbol_hook \ | |
4854 | elf_vxworks_add_symbol_hook | |
4855 | #undef elf_backend_link_output_symbol_hook | |
4856 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 4857 | elf_vxworks_link_output_symbol_hook |
eac338cf PB |
4858 | #undef elf_backend_emit_relocs |
4859 | #define elf_backend_emit_relocs elf_vxworks_emit_relocs | |
4860 | #undef elf_backend_final_write_processing | |
4861 | #define elf_backend_final_write_processing \ | |
4862 | elf_vxworks_final_write_processing | |
4863 | ||
4864 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
4865 | define it. */ | |
4866 | #undef elf_backend_want_plt_sym | |
4867 | #define elf_backend_want_plt_sym 1 | |
4868 | ||
4869 | #undef elf32_bed | |
4870 | #define elf32_bed elf32_i386_vxworks_bed | |
4871 | ||
4872 | #include "elf32-target.h" |