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, |
9f973f28 L |
3 | 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
4 | Free Software Foundation, Inc. | |
252b5132 | 5 | |
571fe01f | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
571fe01f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
571fe01f | 11 | (at your option) any later version. |
252b5132 | 12 | |
571fe01f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
571fe01f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
252b5132 | 22 | |
252b5132 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
252b5132 RH |
25 | #include "bfdlink.h" |
26 | #include "libbfd.h" | |
27 | #include "elf-bfd.h" | |
eac338cf | 28 | #include "elf-vxworks.h" |
142411ca | 29 | #include "bfd_stdint.h" |
c25bc9fc L |
30 | #include "objalloc.h" |
31 | #include "hashtab.h" | |
252b5132 | 32 | |
55fd94b0 AM |
33 | /* 386 uses REL relocations instead of RELA. */ |
34 | #define USE_REL 1 | |
252b5132 RH |
35 | |
36 | #include "elf/i386.h" | |
37 | ||
38 | static reloc_howto_type elf_howto_table[]= | |
39 | { | |
b34976b6 | 40 | HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield, |
1b452ec6 | 41 | bfd_elf_generic_reloc, "R_386_NONE", |
b34976b6 AM |
42 | TRUE, 0x00000000, 0x00000000, FALSE), |
43 | HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 44 | bfd_elf_generic_reloc, "R_386_32", |
b34976b6 AM |
45 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
46 | HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 47 | bfd_elf_generic_reloc, "R_386_PC32", |
b34976b6 AM |
48 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
49 | HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 50 | bfd_elf_generic_reloc, "R_386_GOT32", |
b34976b6 AM |
51 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
52 | HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 53 | bfd_elf_generic_reloc, "R_386_PLT32", |
b34976b6 AM |
54 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
55 | HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 56 | bfd_elf_generic_reloc, "R_386_COPY", |
b34976b6 AM |
57 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
58 | HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 59 | bfd_elf_generic_reloc, "R_386_GLOB_DAT", |
b34976b6 AM |
60 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
61 | HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 62 | bfd_elf_generic_reloc, "R_386_JUMP_SLOT", |
b34976b6 AM |
63 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
64 | HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 65 | bfd_elf_generic_reloc, "R_386_RELATIVE", |
b34976b6 AM |
66 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
67 | HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 68 | bfd_elf_generic_reloc, "R_386_GOTOFF", |
b34976b6 AM |
69 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
70 | HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 71 | bfd_elf_generic_reloc, "R_386_GOTPC", |
b34976b6 | 72 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
1b452ec6 | 73 | |
dc47f327 AM |
74 | /* We have a gap in the reloc numbers here. |
75 | R_386_standard counts the number up to this point, and | |
76 | R_386_ext_offset is the value to subtract from a reloc type of | |
77 | R_386_16 thru R_386_PC8 to form an index into this table. */ | |
55fd94b0 AM |
78 | #define R_386_standard (R_386_GOTPC + 1) |
79 | #define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard) | |
1b452ec6 | 80 | |
37e55690 | 81 | /* These relocs are a GNU extension. */ |
b34976b6 | 82 | HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
37e55690 | 83 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF", |
b34976b6 AM |
84 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
85 | HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 86 | bfd_elf_generic_reloc, "R_386_TLS_IE", |
b34976b6 AM |
87 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
88 | HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 89 | bfd_elf_generic_reloc, "R_386_TLS_GOTIE", |
b34976b6 AM |
90 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
91 | HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 92 | bfd_elf_generic_reloc, "R_386_TLS_LE", |
b34976b6 AM |
93 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
94 | HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 95 | bfd_elf_generic_reloc, "R_386_TLS_GD", |
b34976b6 AM |
96 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
97 | HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 98 | bfd_elf_generic_reloc, "R_386_TLS_LDM", |
b34976b6 AM |
99 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
100 | HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 101 | bfd_elf_generic_reloc, "R_386_16", |
b34976b6 | 102 | TRUE, 0xffff, 0xffff, FALSE), |
b0360d8c | 103 | HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, |
1b452ec6 | 104 | bfd_elf_generic_reloc, "R_386_PC16", |
b34976b6 AM |
105 | TRUE, 0xffff, 0xffff, TRUE), |
106 | HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 107 | bfd_elf_generic_reloc, "R_386_8", |
b34976b6 AM |
108 | TRUE, 0xff, 0xff, FALSE), |
109 | HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
1b452ec6 | 110 | bfd_elf_generic_reloc, "R_386_PC8", |
b34976b6 | 111 | TRUE, 0xff, 0xff, TRUE), |
dc47f327 | 112 | |
55fd94b0 AM |
113 | #define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset) |
114 | #define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext) | |
13ae64f3 | 115 | /* These are common with Solaris TLS implementation. */ |
b34976b6 | 116 | HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
13ae64f3 | 117 | bfd_elf_generic_reloc, "R_386_TLS_LDO_32", |
b34976b6 AM |
118 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
119 | HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 120 | bfd_elf_generic_reloc, "R_386_TLS_IE_32", |
b34976b6 AM |
121 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
122 | HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 123 | bfd_elf_generic_reloc, "R_386_TLS_LE_32", |
b34976b6 AM |
124 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
125 | HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 126 | bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32", |
b34976b6 AM |
127 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
128 | HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 129 | bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32", |
b34976b6 AM |
130 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
131 | HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 132 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF32", |
b34976b6 | 133 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
67a4f2b7 AO |
134 | EMPTY_HOWTO (38), |
135 | HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
136 | bfd_elf_generic_reloc, "R_386_TLS_GOTDESC", | |
137 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
138 | HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
139 | bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL", | |
140 | FALSE, 0, 0, FALSE), | |
141 | HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
142 | bfd_elf_generic_reloc, "R_386_TLS_DESC", | |
143 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
cbe950e9 L |
144 | HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
145 | bfd_elf_generic_reloc, "R_386_IRELATIVE", | |
146 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
13ae64f3 JJ |
147 | |
148 | /* Another gap. */ | |
cbe950e9 L |
149 | #define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset) |
150 | #define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative) | |
252b5132 RH |
151 | |
152 | /* GNU extension to record C++ vtable hierarchy. */ | |
252b5132 RH |
153 | HOWTO (R_386_GNU_VTINHERIT, /* type */ |
154 | 0, /* rightshift */ | |
155 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
156 | 0, /* bitsize */ | |
b34976b6 | 157 | FALSE, /* pc_relative */ |
252b5132 RH |
158 | 0, /* bitpos */ |
159 | complain_overflow_dont, /* complain_on_overflow */ | |
160 | NULL, /* special_function */ | |
161 | "R_386_GNU_VTINHERIT", /* name */ | |
b34976b6 | 162 | FALSE, /* partial_inplace */ |
252b5132 RH |
163 | 0, /* src_mask */ |
164 | 0, /* dst_mask */ | |
b34976b6 | 165 | FALSE), /* pcrel_offset */ |
252b5132 RH |
166 | |
167 | /* GNU extension to record C++ vtable member usage. */ | |
252b5132 RH |
168 | HOWTO (R_386_GNU_VTENTRY, /* type */ |
169 | 0, /* rightshift */ | |
170 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
171 | 0, /* bitsize */ | |
b34976b6 | 172 | FALSE, /* pc_relative */ |
252b5132 RH |
173 | 0, /* bitpos */ |
174 | complain_overflow_dont, /* complain_on_overflow */ | |
175 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
176 | "R_386_GNU_VTENTRY", /* name */ | |
b34976b6 | 177 | FALSE, /* partial_inplace */ |
252b5132 RH |
178 | 0, /* src_mask */ |
179 | 0, /* dst_mask */ | |
b34976b6 | 180 | FALSE) /* pcrel_offset */ |
dc47f327 | 181 | |
55fd94b0 | 182 | #define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset) |
dc47f327 AM |
183 | |
184 | }; | |
185 | ||
252b5132 | 186 | #ifdef DEBUG_GEN_RELOC |
55fd94b0 AM |
187 | #define TRACE(str) \ |
188 | fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str) | |
252b5132 RH |
189 | #else |
190 | #define TRACE(str) | |
191 | #endif | |
192 | ||
193 | static reloc_howto_type * | |
55fd94b0 AM |
194 | elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
195 | bfd_reloc_code_real_type code) | |
252b5132 RH |
196 | { |
197 | switch (code) | |
198 | { | |
199 | case BFD_RELOC_NONE: | |
200 | TRACE ("BFD_RELOC_NONE"); | |
55fd94b0 | 201 | return &elf_howto_table[R_386_NONE]; |
252b5132 RH |
202 | |
203 | case BFD_RELOC_32: | |
204 | TRACE ("BFD_RELOC_32"); | |
55fd94b0 | 205 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
206 | |
207 | case BFD_RELOC_CTOR: | |
208 | TRACE ("BFD_RELOC_CTOR"); | |
55fd94b0 | 209 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
210 | |
211 | case BFD_RELOC_32_PCREL: | |
212 | TRACE ("BFD_RELOC_PC32"); | |
55fd94b0 | 213 | return &elf_howto_table[R_386_PC32]; |
252b5132 RH |
214 | |
215 | case BFD_RELOC_386_GOT32: | |
216 | TRACE ("BFD_RELOC_386_GOT32"); | |
55fd94b0 | 217 | return &elf_howto_table[R_386_GOT32]; |
252b5132 RH |
218 | |
219 | case BFD_RELOC_386_PLT32: | |
220 | TRACE ("BFD_RELOC_386_PLT32"); | |
55fd94b0 | 221 | return &elf_howto_table[R_386_PLT32]; |
252b5132 RH |
222 | |
223 | case BFD_RELOC_386_COPY: | |
224 | TRACE ("BFD_RELOC_386_COPY"); | |
55fd94b0 | 225 | return &elf_howto_table[R_386_COPY]; |
252b5132 RH |
226 | |
227 | case BFD_RELOC_386_GLOB_DAT: | |
228 | TRACE ("BFD_RELOC_386_GLOB_DAT"); | |
55fd94b0 | 229 | return &elf_howto_table[R_386_GLOB_DAT]; |
252b5132 RH |
230 | |
231 | case BFD_RELOC_386_JUMP_SLOT: | |
232 | TRACE ("BFD_RELOC_386_JUMP_SLOT"); | |
55fd94b0 | 233 | return &elf_howto_table[R_386_JUMP_SLOT]; |
252b5132 RH |
234 | |
235 | case BFD_RELOC_386_RELATIVE: | |
236 | TRACE ("BFD_RELOC_386_RELATIVE"); | |
55fd94b0 | 237 | return &elf_howto_table[R_386_RELATIVE]; |
252b5132 RH |
238 | |
239 | case BFD_RELOC_386_GOTOFF: | |
240 | TRACE ("BFD_RELOC_386_GOTOFF"); | |
55fd94b0 | 241 | return &elf_howto_table[R_386_GOTOFF]; |
252b5132 RH |
242 | |
243 | case BFD_RELOC_386_GOTPC: | |
244 | TRACE ("BFD_RELOC_386_GOTPC"); | |
55fd94b0 | 245 | return &elf_howto_table[R_386_GOTPC]; |
252b5132 | 246 | |
37e55690 JJ |
247 | /* These relocs are a GNU extension. */ |
248 | case BFD_RELOC_386_TLS_TPOFF: | |
249 | TRACE ("BFD_RELOC_386_TLS_TPOFF"); | |
55fd94b0 | 250 | return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset]; |
37e55690 JJ |
251 | |
252 | case BFD_RELOC_386_TLS_IE: | |
253 | TRACE ("BFD_RELOC_386_TLS_IE"); | |
55fd94b0 | 254 | return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset]; |
37e55690 JJ |
255 | |
256 | case BFD_RELOC_386_TLS_GOTIE: | |
257 | TRACE ("BFD_RELOC_386_TLS_GOTIE"); | |
55fd94b0 | 258 | return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset]; |
37e55690 | 259 | |
13ae64f3 JJ |
260 | case BFD_RELOC_386_TLS_LE: |
261 | TRACE ("BFD_RELOC_386_TLS_LE"); | |
55fd94b0 | 262 | return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset]; |
13ae64f3 JJ |
263 | |
264 | case BFD_RELOC_386_TLS_GD: | |
265 | TRACE ("BFD_RELOC_386_TLS_GD"); | |
55fd94b0 | 266 | return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset]; |
13ae64f3 JJ |
267 | |
268 | case BFD_RELOC_386_TLS_LDM: | |
269 | TRACE ("BFD_RELOC_386_TLS_LDM"); | |
55fd94b0 | 270 | return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset]; |
13ae64f3 | 271 | |
252b5132 RH |
272 | case BFD_RELOC_16: |
273 | TRACE ("BFD_RELOC_16"); | |
55fd94b0 | 274 | return &elf_howto_table[R_386_16 - R_386_ext_offset]; |
252b5132 RH |
275 | |
276 | case BFD_RELOC_16_PCREL: | |
277 | TRACE ("BFD_RELOC_16_PCREL"); | |
55fd94b0 | 278 | return &elf_howto_table[R_386_PC16 - R_386_ext_offset]; |
252b5132 RH |
279 | |
280 | case BFD_RELOC_8: | |
281 | TRACE ("BFD_RELOC_8"); | |
55fd94b0 | 282 | return &elf_howto_table[R_386_8 - R_386_ext_offset]; |
252b5132 RH |
283 | |
284 | case BFD_RELOC_8_PCREL: | |
285 | TRACE ("BFD_RELOC_8_PCREL"); | |
55fd94b0 | 286 | return &elf_howto_table[R_386_PC8 - R_386_ext_offset]; |
252b5132 | 287 | |
13ae64f3 JJ |
288 | /* Common with Sun TLS implementation. */ |
289 | case BFD_RELOC_386_TLS_LDO_32: | |
290 | TRACE ("BFD_RELOC_386_TLS_LDO_32"); | |
55fd94b0 | 291 | return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset]; |
13ae64f3 JJ |
292 | |
293 | case BFD_RELOC_386_TLS_IE_32: | |
294 | TRACE ("BFD_RELOC_386_TLS_IE_32"); | |
55fd94b0 | 295 | return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
296 | |
297 | case BFD_RELOC_386_TLS_LE_32: | |
298 | TRACE ("BFD_RELOC_386_TLS_LE_32"); | |
55fd94b0 | 299 | return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
300 | |
301 | case BFD_RELOC_386_TLS_DTPMOD32: | |
302 | TRACE ("BFD_RELOC_386_TLS_DTPMOD32"); | |
55fd94b0 | 303 | return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset]; |
13ae64f3 JJ |
304 | |
305 | case BFD_RELOC_386_TLS_DTPOFF32: | |
306 | TRACE ("BFD_RELOC_386_TLS_DTPOFF32"); | |
55fd94b0 | 307 | return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset]; |
13ae64f3 JJ |
308 | |
309 | case BFD_RELOC_386_TLS_TPOFF32: | |
310 | TRACE ("BFD_RELOC_386_TLS_TPOFF32"); | |
55fd94b0 | 311 | return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset]; |
13ae64f3 | 312 | |
67a4f2b7 AO |
313 | case BFD_RELOC_386_TLS_GOTDESC: |
314 | TRACE ("BFD_RELOC_386_TLS_GOTDESC"); | |
315 | return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset]; | |
316 | ||
317 | case BFD_RELOC_386_TLS_DESC_CALL: | |
318 | TRACE ("BFD_RELOC_386_TLS_DESC_CALL"); | |
319 | return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset]; | |
320 | ||
321 | case BFD_RELOC_386_TLS_DESC: | |
322 | TRACE ("BFD_RELOC_386_TLS_DESC"); | |
323 | return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset]; | |
324 | ||
cbe950e9 L |
325 | case BFD_RELOC_386_IRELATIVE: |
326 | TRACE ("BFD_RELOC_386_IRELATIVE"); | |
2a750708 | 327 | return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset]; |
cbe950e9 | 328 | |
252b5132 RH |
329 | case BFD_RELOC_VTABLE_INHERIT: |
330 | TRACE ("BFD_RELOC_VTABLE_INHERIT"); | |
55fd94b0 | 331 | return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset]; |
252b5132 RH |
332 | |
333 | case BFD_RELOC_VTABLE_ENTRY: | |
334 | TRACE ("BFD_RELOC_VTABLE_ENTRY"); | |
55fd94b0 | 335 | return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset]; |
252b5132 RH |
336 | |
337 | default: | |
338 | break; | |
339 | } | |
340 | ||
341 | TRACE ("Unknown"); | |
342 | return 0; | |
343 | } | |
344 | ||
157090f7 AM |
345 | static reloc_howto_type * |
346 | elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
347 | const char *r_name) | |
348 | { | |
349 | unsigned int i; | |
350 | ||
351 | for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++) | |
352 | if (elf_howto_table[i].name != NULL | |
353 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
354 | return &elf_howto_table[i]; | |
355 | ||
356 | return NULL; | |
357 | } | |
358 | ||
142411ca L |
359 | static reloc_howto_type * |
360 | elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type) | |
252b5132 | 361 | { |
dc47f327 AM |
362 | unsigned int indx; |
363 | ||
364 | if ((indx = r_type) >= R_386_standard | |
365 | && ((indx = r_type - R_386_ext_offset) - R_386_standard | |
366 | >= R_386_ext - R_386_standard) | |
13ae64f3 | 367 | && ((indx = r_type - R_386_tls_offset) - R_386_ext |
cbe950e9 L |
368 | >= R_386_irelative - R_386_ext) |
369 | && ((indx = r_type - R_386_vt_offset) - R_386_irelative | |
370 | >= R_386_vt - R_386_irelative)) | |
252b5132 | 371 | { |
d003868e AM |
372 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), |
373 | abfd, (int) r_type); | |
55fd94b0 | 374 | indx = R_386_NONE; |
252b5132 | 375 | } |
142411ca L |
376 | BFD_ASSERT (elf_howto_table [indx].type == r_type); |
377 | return &elf_howto_table[indx]; | |
378 | } | |
379 | ||
380 | static void | |
381 | elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, | |
382 | arelent *cache_ptr, | |
383 | Elf_Internal_Rela *dst) | |
384 | { | |
385 | unsigned int r_type = ELF32_R_TYPE (dst->r_info); | |
386 | cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type); | |
252b5132 RH |
387 | } |
388 | ||
389 | /* Return whether a symbol name implies a local label. The UnixWare | |
390 | 2.1 cc generates temporary symbols that start with .X, so we | |
391 | recognize them here. FIXME: do other SVR4 compilers also use .X?. | |
392 | If so, we should move the .X recognition into | |
393 | _bfd_elf_is_local_label_name. */ | |
394 | ||
b34976b6 | 395 | static bfd_boolean |
55fd94b0 | 396 | elf_i386_is_local_label_name (bfd *abfd, const char *name) |
252b5132 RH |
397 | { |
398 | if (name[0] == '.' && name[1] == 'X') | |
b34976b6 | 399 | return TRUE; |
252b5132 RH |
400 | |
401 | return _bfd_elf_is_local_label_name (abfd, name); | |
402 | } | |
403 | \f | |
38701953 | 404 | /* Support for core dump NOTE sections. */ |
61adc1a4 | 405 | |
b34976b6 | 406 | static bfd_boolean |
55fd94b0 | 407 | elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
38701953 AM |
408 | { |
409 | int offset; | |
eea6121a | 410 | size_t size; |
38701953 | 411 | |
61adc1a4 | 412 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 413 | { |
61adc1a4 NC |
414 | int pr_version = bfd_get_32 (abfd, note->descdata); |
415 | ||
416 | if (pr_version != 1) | |
417 | return FALSE; | |
418 | ||
419 | /* pr_cursig */ | |
420 | elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20); | |
421 | ||
422 | /* pr_pid */ | |
261b8d08 | 423 | elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24); |
61adc1a4 NC |
424 | |
425 | /* pr_reg */ | |
426 | offset = 28; | |
eea6121a | 427 | size = bfd_get_32 (abfd, note->descdata + 8); |
61adc1a4 NC |
428 | } |
429 | else | |
430 | { | |
431 | switch (note->descsz) | |
432 | { | |
433 | default: | |
434 | return FALSE; | |
38701953 | 435 | |
61adc1a4 NC |
436 | case 144: /* Linux/i386 */ |
437 | /* pr_cursig */ | |
438 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
38701953 | 439 | |
61adc1a4 | 440 | /* pr_pid */ |
261b8d08 | 441 | elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24); |
38701953 | 442 | |
61adc1a4 NC |
443 | /* pr_reg */ |
444 | offset = 72; | |
eea6121a | 445 | size = 68; |
38701953 | 446 | |
61adc1a4 NC |
447 | break; |
448 | } | |
38701953 AM |
449 | } |
450 | ||
451 | /* Make a ".reg/999" section. */ | |
452 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 453 | size, note->descpos + offset); |
38701953 AM |
454 | } |
455 | ||
b34976b6 | 456 | static bfd_boolean |
55fd94b0 | 457 | elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
38701953 | 458 | { |
61adc1a4 | 459 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 460 | { |
61adc1a4 NC |
461 | int pr_version = bfd_get_32 (abfd, note->descdata); |
462 | ||
463 | if (pr_version != 1) | |
b34976b6 | 464 | return FALSE; |
38701953 | 465 | |
61adc1a4 NC |
466 | elf_tdata (abfd)->core_program |
467 | = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17); | |
468 | elf_tdata (abfd)->core_command | |
469 | = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81); | |
470 | } | |
471 | else | |
472 | { | |
473 | switch (note->descsz) | |
474 | { | |
475 | default: | |
476 | return FALSE; | |
477 | ||
478 | case 124: /* Linux/i386 elf_prpsinfo. */ | |
261b8d08 PA |
479 | elf_tdata (abfd)->core_pid |
480 | = bfd_get_32 (abfd, note->descdata + 12); | |
61adc1a4 NC |
481 | elf_tdata (abfd)->core_program |
482 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
483 | elf_tdata (abfd)->core_command | |
484 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
485 | } | |
38701953 AM |
486 | } |
487 | ||
488 | /* Note that for some reason, a spurious space is tacked | |
489 | onto the end of the args in some (at least one anyway) | |
490 | implementations, so strip it off if it exists. */ | |
38701953 AM |
491 | { |
492 | char *command = elf_tdata (abfd)->core_command; | |
493 | int n = strlen (command); | |
494 | ||
495 | if (0 < n && command[n - 1] == ' ') | |
496 | command[n - 1] = '\0'; | |
497 | } | |
498 | ||
b34976b6 | 499 | return TRUE; |
38701953 AM |
500 | } |
501 | \f | |
502 | /* Functions for the i386 ELF linker. | |
503 | ||
504 | In order to gain some understanding of code in this file without | |
505 | knowing all the intricate details of the linker, note the | |
506 | following: | |
507 | ||
508 | Functions named elf_i386_* are called by external routines, other | |
509 | functions are only called locally. elf_i386_* functions appear | |
510 | in this file more or less in the order in which they are called | |
511 | from external routines. eg. elf_i386_check_relocs is called | |
512 | early in the link process, elf_i386_finish_dynamic_sections is | |
513 | one of the last functions. */ | |
514 | ||
252b5132 RH |
515 | |
516 | /* The name of the dynamic interpreter. This is put in the .interp | |
517 | section. */ | |
518 | ||
519 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
520 | ||
a23b6845 AM |
521 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
522 | copying dynamic variables from a shared lib into an app's dynbss | |
523 | section, and instead use a dynamic relocation to point into the | |
524 | shared lib. */ | |
525 | #define ELIMINATE_COPY_RELOCS 1 | |
526 | ||
252b5132 RH |
527 | /* The size in bytes of an entry in the procedure linkage table. */ |
528 | ||
529 | #define PLT_ENTRY_SIZE 16 | |
530 | ||
531 | /* The first entry in an absolute procedure linkage table looks like | |
eac338cf PB |
532 | this. See the SVR4 ABI i386 supplement to see how this works. |
533 | Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */ | |
252b5132 | 534 | |
eac338cf | 535 | static const bfd_byte elf_i386_plt0_entry[12] = |
252b5132 RH |
536 | { |
537 | 0xff, 0x35, /* pushl contents of address */ | |
538 | 0, 0, 0, 0, /* replaced with address of .got + 4. */ | |
539 | 0xff, 0x25, /* jmp indirect */ | |
eac338cf | 540 | 0, 0, 0, 0 /* replaced with address of .got + 8. */ |
252b5132 RH |
541 | }; |
542 | ||
543 | /* Subsequent entries in an absolute procedure linkage table look like | |
544 | this. */ | |
545 | ||
546 | static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] = | |
547 | { | |
548 | 0xff, 0x25, /* jmp indirect */ | |
549 | 0, 0, 0, 0, /* replaced with address of this symbol in .got. */ | |
550 | 0x68, /* pushl immediate */ | |
551 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
552 | 0xe9, /* jmp relative */ | |
553 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
554 | }; | |
555 | ||
eac338cf PB |
556 | /* The first entry in a PIC procedure linkage table look like this. |
557 | Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */ | |
252b5132 | 558 | |
eac338cf | 559 | static const bfd_byte elf_i386_pic_plt0_entry[12] = |
252b5132 RH |
560 | { |
561 | 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */ | |
eac338cf | 562 | 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */ |
252b5132 RH |
563 | }; |
564 | ||
565 | /* Subsequent entries in a PIC procedure linkage table look like this. */ | |
566 | ||
567 | static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] = | |
568 | { | |
569 | 0xff, 0xa3, /* jmp *offset(%ebx) */ | |
570 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
571 | 0x68, /* pushl immediate */ | |
572 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
573 | 0xe9, /* jmp relative */ | |
574 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
575 | }; | |
576 | ||
eac338cf PB |
577 | /* On VxWorks, the .rel.plt.unloaded section has absolute relocations |
578 | for the PLTResolve stub and then for each PLT entry. */ | |
579 | #define PLTRESOLVE_RELOCS_SHLIB 0 | |
580 | #define PLTRESOLVE_RELOCS 2 | |
581 | #define PLT_NON_JUMP_SLOT_RELOCS 2 | |
582 | ||
252b5132 RH |
583 | /* i386 ELF linker hash entry. */ |
584 | ||
585 | struct elf_i386_link_hash_entry | |
586 | { | |
ebe50bae | 587 | struct elf_link_hash_entry elf; |
252b5132 | 588 | |
0c715baa | 589 | /* Track dynamic relocs copied for this symbol. */ |
e03a8ed8 | 590 | struct elf_dyn_relocs *dyn_relocs; |
13ae64f3 | 591 | |
37e55690 JJ |
592 | #define GOT_UNKNOWN 0 |
593 | #define GOT_NORMAL 1 | |
594 | #define GOT_TLS_GD 2 | |
595 | #define GOT_TLS_IE 4 | |
596 | #define GOT_TLS_IE_POS 5 | |
597 | #define GOT_TLS_IE_NEG 6 | |
598 | #define GOT_TLS_IE_BOTH 7 | |
67a4f2b7 AO |
599 | #define GOT_TLS_GDESC 8 |
600 | #define GOT_TLS_GD_BOTH_P(type) \ | |
601 | ((type) == (GOT_TLS_GD | GOT_TLS_GDESC)) | |
602 | #define GOT_TLS_GD_P(type) \ | |
603 | ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type)) | |
604 | #define GOT_TLS_GDESC_P(type) \ | |
605 | ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type)) | |
606 | #define GOT_TLS_GD_ANY_P(type) \ | |
607 | (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type)) | |
37e55690 | 608 | unsigned char tls_type; |
67a4f2b7 AO |
609 | |
610 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, | |
611 | starting at the end of the jump table. */ | |
612 | bfd_vma tlsdesc_got; | |
13ae64f3 JJ |
613 | }; |
614 | ||
615 | #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent)) | |
616 | ||
617 | struct elf_i386_obj_tdata | |
618 | { | |
619 | struct elf_obj_tdata root; | |
620 | ||
621 | /* tls_type for each local got entry. */ | |
622 | char *local_got_tls_type; | |
67a4f2b7 AO |
623 | |
624 | /* GOTPLT entries for TLS descriptors. */ | |
625 | bfd_vma *local_tlsdesc_gotent; | |
252b5132 RH |
626 | }; |
627 | ||
13ae64f3 JJ |
628 | #define elf_i386_tdata(abfd) \ |
629 | ((struct elf_i386_obj_tdata *) (abfd)->tdata.any) | |
630 | ||
631 | #define elf_i386_local_got_tls_type(abfd) \ | |
632 | (elf_i386_tdata (abfd)->local_got_tls_type) | |
633 | ||
67a4f2b7 AO |
634 | #define elf_i386_local_tlsdesc_gotent(abfd) \ |
635 | (elf_i386_tdata (abfd)->local_tlsdesc_gotent) | |
636 | ||
0ffa91dd NC |
637 | #define is_i386_elf(bfd) \ |
638 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
639 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 640 | && elf_object_id (bfd) == I386_ELF_DATA) |
0ffa91dd | 641 | |
b34976b6 | 642 | static bfd_boolean |
55fd94b0 | 643 | elf_i386_mkobject (bfd *abfd) |
13ae64f3 | 644 | { |
0ffa91dd | 645 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata), |
4dfe6ac6 | 646 | I386_ELF_DATA); |
13ae64f3 | 647 | } |
cedb70c5 | 648 | |
252b5132 RH |
649 | /* i386 ELF linker hash table. */ |
650 | ||
651 | struct elf_i386_link_hash_table | |
652 | { | |
ebe50bae | 653 | struct elf_link_hash_table elf; |
252b5132 | 654 | |
6725bdbf | 655 | /* Short-cuts to get to dynamic linker sections. */ |
6725bdbf AM |
656 | asection *sdynbss; |
657 | asection *srelbss; | |
9635fe29 | 658 | |
4dfe6ac6 NC |
659 | union |
660 | { | |
13ae64f3 JJ |
661 | bfd_signed_vma refcount; |
662 | bfd_vma offset; | |
663 | } tls_ldm_got; | |
664 | ||
67a4f2b7 AO |
665 | /* The amount of space used by the reserved portion of the sgotplt |
666 | section, plus whatever space is used by the jump slots. */ | |
667 | bfd_vma sgotplt_jump_table_size; | |
668 | ||
87d72d41 AM |
669 | /* Small local sym cache. */ |
670 | struct sym_cache sym_cache; | |
9f03412a AO |
671 | |
672 | /* _TLS_MODULE_BASE_ symbol. */ | |
673 | struct bfd_link_hash_entry *tls_module_base; | |
c25bc9fc L |
674 | |
675 | /* Used by local STT_GNU_IFUNC symbols. */ | |
676 | htab_t loc_hash_table; | |
4dfe6ac6 NC |
677 | void * loc_hash_memory; |
678 | ||
679 | /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */ | |
680 | asection *srelplt2; | |
681 | ||
682 | /* True if the target system is VxWorks. */ | |
683 | int is_vxworks; | |
684 | ||
685 | /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */ | |
686 | bfd_vma next_tls_desc_index; | |
687 | ||
688 | /* Value used to fill the last word of the first plt entry. */ | |
689 | bfd_byte plt0_pad_byte; | |
6725bdbf | 690 | }; |
252b5132 RH |
691 | |
692 | /* Get the i386 ELF linker hash table from a link_info structure. */ | |
693 | ||
694 | #define elf_i386_hash_table(p) \ | |
4dfe6ac6 NC |
695 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
696 | == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 697 | |
67a4f2b7 | 698 | #define elf_i386_compute_jump_table_size(htab) \ |
5ae0bfb6 | 699 | ((htab)->next_tls_desc_index * 4) |
67a4f2b7 | 700 | |
252b5132 RH |
701 | /* Create an entry in an i386 ELF linker hash table. */ |
702 | ||
703 | static struct bfd_hash_entry * | |
eb4ff4d6 L |
704 | elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry, |
705 | struct bfd_hash_table *table, | |
706 | const char *string) | |
252b5132 | 707 | { |
252b5132 RH |
708 | /* Allocate the structure if it has not already been allocated by a |
709 | subclass. */ | |
ebe50bae AM |
710 | if (entry == NULL) |
711 | { | |
a50b1753 NC |
712 | entry = (struct bfd_hash_entry *) |
713 | bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry)); | |
ebe50bae AM |
714 | if (entry == NULL) |
715 | return entry; | |
716 | } | |
252b5132 RH |
717 | |
718 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
719 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
720 | if (entry != NULL) | |
252b5132 | 721 | { |
ebe50bae AM |
722 | struct elf_i386_link_hash_entry *eh; |
723 | ||
724 | eh = (struct elf_i386_link_hash_entry *) entry; | |
725 | eh->dyn_relocs = NULL; | |
13ae64f3 | 726 | eh->tls_type = GOT_UNKNOWN; |
67a4f2b7 | 727 | eh->tlsdesc_got = (bfd_vma) -1; |
252b5132 RH |
728 | } |
729 | ||
ebe50bae | 730 | return entry; |
252b5132 RH |
731 | } |
732 | ||
c25bc9fc L |
733 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
734 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
735 | as global symbol. We reuse indx and dynstr_index for local symbol | |
736 | hash since they aren't used by global symbols in this backend. */ | |
737 | ||
738 | static hashval_t | |
739 | elf_i386_local_htab_hash (const void *ptr) | |
740 | { | |
741 | struct elf_link_hash_entry *h | |
742 | = (struct elf_link_hash_entry *) ptr; | |
d2149d72 | 743 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); |
c25bc9fc L |
744 | } |
745 | ||
746 | /* Compare local hash entries. */ | |
747 | ||
748 | static int | |
749 | elf_i386_local_htab_eq (const void *ptr1, const void *ptr2) | |
750 | { | |
751 | struct elf_link_hash_entry *h1 | |
752 | = (struct elf_link_hash_entry *) ptr1; | |
753 | struct elf_link_hash_entry *h2 | |
754 | = (struct elf_link_hash_entry *) ptr2; | |
755 | ||
756 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
757 | } | |
758 | ||
759 | /* Find and/or create a hash entry for local symbol. */ | |
760 | ||
761 | static struct elf_link_hash_entry * | |
762 | elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab, | |
763 | bfd *abfd, const Elf_Internal_Rela *rel, | |
764 | bfd_boolean create) | |
765 | { | |
766 | struct elf_i386_link_hash_entry e, *ret; | |
767 | asection *sec = abfd->sections; | |
d2149d72 L |
768 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, |
769 | ELF32_R_SYM (rel->r_info)); | |
c25bc9fc L |
770 | void **slot; |
771 | ||
772 | e.elf.indx = sec->id; | |
773 | e.elf.dynstr_index = ELF32_R_SYM (rel->r_info); | |
774 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
775 | create ? INSERT : NO_INSERT); | |
776 | ||
777 | if (!slot) | |
778 | return NULL; | |
779 | ||
780 | if (*slot) | |
781 | { | |
782 | ret = (struct elf_i386_link_hash_entry *) *slot; | |
783 | return &ret->elf; | |
784 | } | |
785 | ||
786 | ret = (struct elf_i386_link_hash_entry *) | |
787 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
788 | sizeof (struct elf_i386_link_hash_entry)); | |
789 | if (ret) | |
790 | { | |
791 | memset (ret, 0, sizeof (*ret)); | |
792 | ret->elf.indx = sec->id; | |
793 | ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info); | |
794 | ret->elf.dynindx = -1; | |
c25bc9fc L |
795 | *slot = ret; |
796 | } | |
797 | return &ret->elf; | |
798 | } | |
799 | ||
252b5132 RH |
800 | /* Create an i386 ELF linker hash table. */ |
801 | ||
802 | static struct bfd_link_hash_table * | |
55fd94b0 | 803 | elf_i386_link_hash_table_create (bfd *abfd) |
252b5132 RH |
804 | { |
805 | struct elf_i386_link_hash_table *ret; | |
dc810e39 | 806 | bfd_size_type amt = sizeof (struct elf_i386_link_hash_table); |
252b5132 | 807 | |
a50b1753 | 808 | ret = (struct elf_i386_link_hash_table *) bfd_malloc (amt); |
ebe50bae | 809 | if (ret == NULL) |
252b5132 RH |
810 | return NULL; |
811 | ||
eb4ff4d6 L |
812 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
813 | elf_i386_link_hash_newfunc, | |
4dfe6ac6 NC |
814 | sizeof (struct elf_i386_link_hash_entry), |
815 | I386_ELF_DATA)) | |
252b5132 | 816 | { |
e2d34d7d | 817 | free (ret); |
252b5132 RH |
818 | return NULL; |
819 | } | |
820 | ||
6725bdbf AM |
821 | ret->sdynbss = NULL; |
822 | ret->srelbss = NULL; | |
7a624474 | 823 | ret->tls_ldm_got.refcount = 0; |
5ae0bfb6 | 824 | ret->next_tls_desc_index = 0; |
67a4f2b7 | 825 | ret->sgotplt_jump_table_size = 0; |
87d72d41 | 826 | ret->sym_cache.abfd = NULL; |
eac338cf PB |
827 | ret->is_vxworks = 0; |
828 | ret->srelplt2 = NULL; | |
eac338cf | 829 | ret->plt0_pad_byte = 0; |
9f03412a | 830 | ret->tls_module_base = NULL; |
6725bdbf | 831 | |
c25bc9fc L |
832 | ret->loc_hash_table = htab_try_create (1024, |
833 | elf_i386_local_htab_hash, | |
834 | elf_i386_local_htab_eq, | |
835 | NULL); | |
836 | ret->loc_hash_memory = objalloc_create (); | |
837 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
838 | { | |
839 | free (ret); | |
840 | return NULL; | |
841 | } | |
842 | ||
ebe50bae | 843 | return &ret->elf.root; |
252b5132 RH |
844 | } |
845 | ||
c25bc9fc L |
846 | /* Destroy an i386 ELF linker hash table. */ |
847 | ||
848 | static void | |
849 | elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash) | |
850 | { | |
851 | struct elf_i386_link_hash_table *htab | |
852 | = (struct elf_i386_link_hash_table *) hash; | |
853 | ||
854 | if (htab->loc_hash_table) | |
855 | htab_delete (htab->loc_hash_table); | |
856 | if (htab->loc_hash_memory) | |
857 | objalloc_free ((struct objalloc *) htab->loc_hash_memory); | |
858 | _bfd_generic_link_hash_table_free (hash); | |
859 | } | |
860 | ||
6725bdbf AM |
861 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and |
862 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
863 | hash table. */ | |
864 | ||
b34976b6 | 865 | static bfd_boolean |
55fd94b0 | 866 | elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
6725bdbf AM |
867 | { |
868 | struct elf_i386_link_hash_table *htab; | |
869 | ||
6725bdbf | 870 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 871 | return FALSE; |
6725bdbf | 872 | |
6de2ae4a | 873 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
874 | if (htab == NULL) |
875 | return FALSE; | |
876 | ||
6725bdbf AM |
877 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); |
878 | if (!info->shared) | |
879 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss"); | |
880 | ||
6de2ae4a | 881 | if (!htab->sdynbss |
6725bdbf AM |
882 | || (!info->shared && !htab->srelbss)) |
883 | abort (); | |
884 | ||
711de32c | 885 | if (htab->is_vxworks |
6de2ae4a L |
886 | && !elf_vxworks_create_dynamic_sections (dynobj, info, |
887 | &htab->srelplt2)) | |
711de32c | 888 | return FALSE; |
eac338cf | 889 | |
b34976b6 | 890 | return TRUE; |
6725bdbf AM |
891 | } |
892 | ||
ebe50bae AM |
893 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
894 | ||
51b64d56 | 895 | static void |
fcfa13d2 | 896 | elf_i386_copy_indirect_symbol (struct bfd_link_info *info, |
55fd94b0 AM |
897 | struct elf_link_hash_entry *dir, |
898 | struct elf_link_hash_entry *ind) | |
ebe50bae AM |
899 | { |
900 | struct elf_i386_link_hash_entry *edir, *eind; | |
901 | ||
902 | edir = (struct elf_i386_link_hash_entry *) dir; | |
903 | eind = (struct elf_i386_link_hash_entry *) ind; | |
904 | ||
bbd7ec4a | 905 | if (eind->dyn_relocs != NULL) |
ebe50bae | 906 | { |
bbd7ec4a AM |
907 | if (edir->dyn_relocs != NULL) |
908 | { | |
e03a8ed8 L |
909 | struct elf_dyn_relocs **pp; |
910 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 911 | |
fcfa13d2 | 912 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
913 | list. Merge any entries against the same section. */ |
914 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
915 | { | |
e03a8ed8 | 916 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
917 | |
918 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
919 | if (q->sec == p->sec) | |
920 | { | |
921 | q->pc_count += p->pc_count; | |
922 | q->count += p->count; | |
923 | *pp = p->next; | |
924 | break; | |
925 | } | |
926 | if (q == NULL) | |
927 | pp = &p->next; | |
928 | } | |
929 | *pp = edir->dyn_relocs; | |
930 | } | |
931 | ||
ebe50bae AM |
932 | edir->dyn_relocs = eind->dyn_relocs; |
933 | eind->dyn_relocs = NULL; | |
934 | } | |
ebe50bae | 935 | |
cd67d266 JJ |
936 | if (ind->root.type == bfd_link_hash_indirect |
937 | && dir->got.refcount <= 0) | |
938 | { | |
939 | edir->tls_type = eind->tls_type; | |
940 | eind->tls_type = GOT_UNKNOWN; | |
941 | } | |
81848ca0 AM |
942 | |
943 | if (ELIMINATE_COPY_RELOCS | |
944 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
945 | && dir->dynamic_adjusted) |
946 | { | |
947 | /* If called to transfer flags for a weakdef during processing | |
948 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
949 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
950 | dir->ref_dynamic |= ind->ref_dynamic; | |
951 | dir->ref_regular |= ind->ref_regular; | |
952 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
953 | dir->needs_plt |= ind->needs_plt; | |
954 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
955 | } | |
81848ca0 | 956 | else |
fcfa13d2 | 957 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
ebe50bae AM |
958 | } |
959 | ||
142411ca L |
960 | typedef union |
961 | { | |
962 | unsigned char c[2]; | |
963 | uint16_t i; | |
964 | } | |
965 | i386_opcode16; | |
966 | ||
967 | /* Return TRUE if the TLS access code sequence support transition | |
968 | from R_TYPE. */ | |
969 | ||
970 | static bfd_boolean | |
971 | elf_i386_check_tls_transition (bfd *abfd, asection *sec, | |
972 | bfd_byte *contents, | |
973 | Elf_Internal_Shdr *symtab_hdr, | |
974 | struct elf_link_hash_entry **sym_hashes, | |
975 | unsigned int r_type, | |
976 | const Elf_Internal_Rela *rel, | |
977 | const Elf_Internal_Rela *relend) | |
13ae64f3 | 978 | { |
142411ca L |
979 | unsigned int val, type; |
980 | unsigned long r_symndx; | |
981 | struct elf_link_hash_entry *h; | |
982 | bfd_vma offset; | |
983 | ||
984 | /* Get the section contents. */ | |
985 | if (contents == NULL) | |
986 | { | |
987 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
988 | contents = elf_section_data (sec)->this_hdr.contents; | |
989 | else | |
990 | { | |
991 | /* FIXME: How to better handle error condition? */ | |
992 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
993 | return FALSE; | |
13ae64f3 | 994 | |
142411ca L |
995 | /* Cache the section contents for elf_link_input_bfd. */ |
996 | elf_section_data (sec)->this_hdr.contents = contents; | |
997 | } | |
998 | } | |
999 | ||
1000 | offset = rel->r_offset; | |
13ae64f3 | 1001 | switch (r_type) |
142411ca L |
1002 | { |
1003 | case R_386_TLS_GD: | |
1004 | case R_386_TLS_LDM: | |
1005 | if (offset < 2 || (rel + 1) >= relend) | |
1006 | return FALSE; | |
1007 | ||
1008 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1009 | if (r_type == R_386_TLS_GD) | |
1010 | { | |
09e8c3bf | 1011 | /* Check transition from GD access model. Only |
142411ca L |
1012 | leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr |
1013 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop | |
1014 | can transit to different access model. */ | |
1015 | if ((offset + 10) > sec->size || | |
1016 | (type != 0x8d && type != 0x04)) | |
1017 | return FALSE; | |
1018 | ||
1019 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1020 | if (type == 0x04) | |
1021 | { | |
1022 | /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */ | |
1023 | if (offset < 3) | |
1024 | return FALSE; | |
1025 | ||
1026 | if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d) | |
1027 | return FALSE; | |
1028 | ||
1029 | if ((val & 0xc7) != 0x05 || val == (4 << 3)) | |
1030 | return FALSE; | |
1031 | } | |
1032 | else | |
1033 | { | |
1034 | /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */ | |
1035 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
1036 | return FALSE; | |
1037 | ||
1038 | if (bfd_get_8 (abfd, contents + offset + 9) != 0x90) | |
1039 | return FALSE; | |
1040 | } | |
1041 | } | |
1042 | else | |
1043 | { | |
1044 | /* Check transition from LD access model. Only | |
1045 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr | |
1046 | can transit to different access model. */ | |
1047 | if (type != 0x8d || (offset + 9) > sec->size) | |
1048 | return FALSE; | |
1049 | ||
1050 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1051 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
1052 | return FALSE; | |
1053 | } | |
1054 | ||
1055 | if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8) | |
1056 | return FALSE; | |
1057 | ||
1058 | r_symndx = ELF32_R_SYM (rel[1].r_info); | |
1059 | if (r_symndx < symtab_hdr->sh_info) | |
1060 | return FALSE; | |
1061 | ||
1062 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
c4fb387b L |
1063 | /* Use strncmp to check ___tls_get_addr since ___tls_get_addr |
1064 | may be versioned. */ | |
142411ca L |
1065 | return (h != NULL |
1066 | && h->root.root.string != NULL | |
1067 | && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32 | |
1068 | || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32) | |
c4fb387b L |
1069 | && (strncmp (h->root.root.string, "___tls_get_addr", |
1070 | 15) == 0)); | |
142411ca L |
1071 | |
1072 | case R_386_TLS_IE: | |
1073 | /* Check transition from IE access model: | |
1074 | movl foo@indntpoff(%rip), %eax | |
1075 | movl foo@indntpoff(%rip), %reg | |
1076 | addl foo@indntpoff(%rip), %reg | |
1077 | */ | |
1078 | ||
1079 | if (offset < 1 || (offset + 4) > sec->size) | |
1080 | return FALSE; | |
1081 | ||
1082 | /* Check "movl foo@tpoff(%rip), %eax" first. */ | |
1083 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1084 | if (val == 0xa1) | |
1085 | return TRUE; | |
1086 | ||
1087 | if (offset < 2) | |
1088 | return FALSE; | |
1089 | ||
1090 | /* Check movl|addl foo@tpoff(%rip), %reg. */ | |
1091 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1092 | return ((type == 0x8b || type == 0x03) | |
1093 | && (val & 0xc7) == 0x05); | |
1094 | ||
1095 | case R_386_TLS_GOTIE: | |
1096 | case R_386_TLS_IE_32: | |
1097 | /* Check transition from {IE_32,GOTIE} access model: | |
1098 | subl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1099 | movl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1100 | addl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1101 | */ | |
1102 | ||
1103 | if (offset < 2 || (offset + 4) > sec->size) | |
1104 | return FALSE; | |
1105 | ||
1106 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1107 | if ((val & 0xc0) != 0x80 || (val & 7) == 4) | |
1108 | return FALSE; | |
1109 | ||
1110 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1111 | return type == 0x8b || type == 0x2b || type == 0x03; | |
1112 | ||
1113 | case R_386_TLS_GOTDESC: | |
1114 | /* Check transition from GDesc access model: | |
1115 | leal x@tlsdesc(%ebx), %eax | |
1116 | ||
1117 | Make sure it's a leal adding ebx to a 32-bit offset | |
1118 | into any register, although it's probably almost always | |
1119 | going to be eax. */ | |
1120 | ||
1121 | if (offset < 2 || (offset + 4) > sec->size) | |
1122 | return FALSE; | |
1123 | ||
1124 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1125 | return FALSE; | |
1126 | ||
1127 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1128 | return (val & 0xc7) == 0x83; | |
1129 | ||
1130 | case R_386_TLS_DESC_CALL: | |
1131 | /* Check transition from GDesc access model: | |
1132 | call *x@tlsdesc(%rax) | |
1133 | */ | |
1134 | if (offset + 2 <= sec->size) | |
1135 | { | |
1136 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
1137 | static i386_opcode16 call = { { 0xff, 0x10 } }; | |
1138 | return bfd_get_16 (abfd, contents + offset) == call.i; | |
1139 | } | |
1140 | ||
1141 | return FALSE; | |
1142 | ||
1143 | default: | |
1144 | abort (); | |
1145 | } | |
1146 | } | |
1147 | ||
1148 | /* Return TRUE if the TLS access transition is OK or no transition | |
1149 | will be performed. Update R_TYPE if there is a transition. */ | |
1150 | ||
1151 | static bfd_boolean | |
1152 | elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd, | |
1153 | asection *sec, bfd_byte *contents, | |
1154 | Elf_Internal_Shdr *symtab_hdr, | |
1155 | struct elf_link_hash_entry **sym_hashes, | |
1156 | unsigned int *r_type, int tls_type, | |
1157 | const Elf_Internal_Rela *rel, | |
1158 | const Elf_Internal_Rela *relend, | |
4c544807 L |
1159 | struct elf_link_hash_entry *h, |
1160 | unsigned long r_symndx) | |
142411ca L |
1161 | { |
1162 | unsigned int from_type = *r_type; | |
1163 | unsigned int to_type = from_type; | |
1164 | bfd_boolean check = TRUE; | |
1165 | ||
bb1cb422 L |
1166 | /* Skip TLS transition for functions. */ |
1167 | if (h != NULL | |
1168 | && (h->type == STT_FUNC | |
1169 | || h->type == STT_GNU_IFUNC)) | |
1170 | return TRUE; | |
1171 | ||
142411ca | 1172 | switch (from_type) |
13ae64f3 JJ |
1173 | { |
1174 | case R_386_TLS_GD: | |
67a4f2b7 AO |
1175 | case R_386_TLS_GOTDESC: |
1176 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 1177 | case R_386_TLS_IE_32: |
37e55690 JJ |
1178 | case R_386_TLS_IE: |
1179 | case R_386_TLS_GOTIE: | |
1d85728f | 1180 | if (info->executable) |
142411ca L |
1181 | { |
1182 | if (h == NULL) | |
1183 | to_type = R_386_TLS_LE_32; | |
1184 | else if (from_type != R_386_TLS_IE | |
1185 | && from_type != R_386_TLS_GOTIE) | |
1186 | to_type = R_386_TLS_IE_32; | |
1187 | } | |
1188 | ||
1189 | /* When we are called from elf_i386_relocate_section, CONTENTS | |
1190 | isn't NULL and there may be additional transitions based on | |
1191 | TLS_TYPE. */ | |
1192 | if (contents != NULL) | |
1193 | { | |
1194 | unsigned int new_to_type = to_type; | |
1195 | ||
1d85728f | 1196 | if (info->executable |
142411ca L |
1197 | && h != NULL |
1198 | && h->dynindx == -1 | |
1199 | && (tls_type & GOT_TLS_IE)) | |
1200 | new_to_type = R_386_TLS_LE_32; | |
1201 | ||
1202 | if (to_type == R_386_TLS_GD | |
1203 | || to_type == R_386_TLS_GOTDESC | |
1204 | || to_type == R_386_TLS_DESC_CALL) | |
1205 | { | |
1206 | if (tls_type == GOT_TLS_IE_POS) | |
1207 | new_to_type = R_386_TLS_GOTIE; | |
1208 | else if (tls_type & GOT_TLS_IE) | |
1209 | new_to_type = R_386_TLS_IE_32; | |
1210 | } | |
1211 | ||
1212 | /* We checked the transition before when we were called from | |
1213 | elf_i386_check_relocs. We only want to check the new | |
1214 | transition which hasn't been checked before. */ | |
1215 | check = new_to_type != to_type && from_type == to_type; | |
1216 | to_type = new_to_type; | |
1217 | } | |
1218 | ||
1219 | break; | |
1220 | ||
13ae64f3 | 1221 | case R_386_TLS_LDM: |
1d85728f | 1222 | if (info->executable) |
142411ca L |
1223 | to_type = R_386_TLS_LE_32; |
1224 | break; | |
1225 | ||
1226 | default: | |
1227 | return TRUE; | |
1228 | } | |
1229 | ||
1230 | /* Return TRUE if there is no transition. */ | |
1231 | if (from_type == to_type) | |
1232 | return TRUE; | |
1233 | ||
1234 | /* Check if the transition can be performed. */ | |
1235 | if (check | |
1236 | && ! elf_i386_check_tls_transition (abfd, sec, contents, | |
1237 | symtab_hdr, sym_hashes, | |
1238 | from_type, rel, relend)) | |
1239 | { | |
2f629d23 | 1240 | reloc_howto_type *from, *to; |
4c544807 | 1241 | const char *name; |
142411ca L |
1242 | |
1243 | from = elf_i386_rtype_to_howto (abfd, from_type); | |
1244 | to = elf_i386_rtype_to_howto (abfd, to_type); | |
1245 | ||
4c544807 L |
1246 | if (h) |
1247 | name = h->root.root.string; | |
1248 | else | |
1249 | { | |
4c544807 | 1250 | struct elf_i386_link_hash_table *htab; |
4dfe6ac6 | 1251 | |
4c544807 | 1252 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
1253 | if (htab == NULL) |
1254 | name = "*unknown*"; | |
1255 | else | |
1256 | { | |
1257 | Elf_Internal_Sym *isym; | |
1258 | ||
1259 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1260 | abfd, r_symndx); | |
1261 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1262 | } | |
4c544807 L |
1263 | } |
1264 | ||
142411ca L |
1265 | (*_bfd_error_handler) |
1266 | (_("%B: TLS transition from %s to %s against `%s' at 0x%lx " | |
1267 | "in section `%A' failed"), | |
4c544807 | 1268 | abfd, sec, from->name, to->name, name, |
142411ca L |
1269 | (unsigned long) rel->r_offset); |
1270 | bfd_set_error (bfd_error_bad_value); | |
1271 | return FALSE; | |
13ae64f3 JJ |
1272 | } |
1273 | ||
142411ca L |
1274 | *r_type = to_type; |
1275 | return TRUE; | |
13ae64f3 JJ |
1276 | } |
1277 | ||
252b5132 | 1278 | /* Look through the relocs for a section during the first phase, and |
0ac8d2ca AM |
1279 | calculate needed space in the global offset table, procedure linkage |
1280 | table, and dynamic reloc sections. */ | |
252b5132 | 1281 | |
b34976b6 | 1282 | static bfd_boolean |
55fd94b0 AM |
1283 | elf_i386_check_relocs (bfd *abfd, |
1284 | struct bfd_link_info *info, | |
1285 | asection *sec, | |
1286 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1287 | { |
6725bdbf | 1288 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1289 | Elf_Internal_Shdr *symtab_hdr; |
1290 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
1291 | const Elf_Internal_Rela *rel; |
1292 | const Elf_Internal_Rela *rel_end; | |
252b5132 RH |
1293 | asection *sreloc; |
1294 | ||
1049f94e | 1295 | if (info->relocatable) |
b34976b6 | 1296 | return TRUE; |
252b5132 | 1297 | |
0ffa91dd NC |
1298 | BFD_ASSERT (is_i386_elf (abfd)); |
1299 | ||
6725bdbf | 1300 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
1301 | if (htab == NULL) |
1302 | return FALSE; | |
1303 | ||
0ffa91dd | 1304 | symtab_hdr = &elf_symtab_hdr (abfd); |
252b5132 | 1305 | sym_hashes = elf_sym_hashes (abfd); |
252b5132 | 1306 | |
252b5132 RH |
1307 | sreloc = NULL; |
1308 | ||
1309 | rel_end = relocs + sec->reloc_count; | |
1310 | for (rel = relocs; rel < rel_end; rel++) | |
1311 | { | |
13ae64f3 | 1312 | unsigned int r_type; |
252b5132 RH |
1313 | unsigned long r_symndx; |
1314 | struct elf_link_hash_entry *h; | |
4c544807 L |
1315 | Elf_Internal_Sym *isym; |
1316 | const char *name; | |
252b5132 RH |
1317 | |
1318 | r_symndx = ELF32_R_SYM (rel->r_info); | |
13ae64f3 | 1319 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 1320 | |
d9bc7a44 | 1321 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
f5f31454 | 1322 | { |
d003868e AM |
1323 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
1324 | abfd, | |
8f615d07 | 1325 | r_symndx); |
b34976b6 | 1326 | return FALSE; |
f5f31454 L |
1327 | } |
1328 | ||
252b5132 | 1329 | if (r_symndx < symtab_hdr->sh_info) |
c25bc9fc L |
1330 | { |
1331 | /* A local symbol. */ | |
c2e61a4e L |
1332 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1333 | abfd, r_symndx); | |
1334 | if (isym == NULL) | |
1335 | return FALSE; | |
c25bc9fc L |
1336 | |
1337 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
c25bc9fc L |
1338 | if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
1339 | { | |
9fff0c39 | 1340 | h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE); |
c25bc9fc | 1341 | if (h == NULL) |
c2e61a4e | 1342 | return FALSE; |
6bbec505 | 1343 | |
c25bc9fc L |
1344 | /* Fake a STT_GNU_IFUNC symbol. */ |
1345 | h->type = STT_GNU_IFUNC; | |
1346 | h->def_regular = 1; | |
1347 | h->ref_regular = 1; | |
1348 | h->forced_local = 1; | |
1349 | h->root.type = bfd_link_hash_defined; | |
1350 | } | |
1351 | else | |
1352 | h = NULL; | |
1353 | } | |
252b5132 | 1354 | else |
71cb9464 | 1355 | { |
4c544807 | 1356 | isym = NULL; |
71cb9464 L |
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: | |
9d4057ee AM |
1379 | if (htab->elf.dynobj == NULL) |
1380 | htab->elf.dynobj = abfd; | |
1381 | if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
c2e61a4e | 1382 | return FALSE; |
cbe950e9 L |
1383 | break; |
1384 | } | |
1385 | ||
1386 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle | |
1387 | it here if it is defined in a non-shared object. */ | |
1388 | if (h->type == STT_GNU_IFUNC | |
1389 | && h->def_regular) | |
1390 | { | |
1391 | /* It is referenced by a non-shared object. */ | |
1392 | h->ref_regular = 1; | |
7ae26bc1 | 1393 | h->needs_plt = 1; |
6bbec505 | 1394 | |
cbe950e9 L |
1395 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1396 | h->plt.refcount += 1; | |
1397 | ||
1398 | /* STT_GNU_IFUNC needs dynamic sections. */ | |
1399 | if (htab->elf.dynobj == NULL) | |
1400 | htab->elf.dynobj = abfd; | |
1401 | ||
1402 | switch (r_type) | |
1403 | { | |
048cbda4 | 1404 | default: |
4c544807 L |
1405 | if (h->root.root.string) |
1406 | name = h->root.root.string; | |
1407 | else | |
1408 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1409 | NULL); | |
048cbda4 L |
1410 | (*_bfd_error_handler) |
1411 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
1412 | "symbol `%s' isn't handled by %s"), abfd, | |
1413 | elf_howto_table[r_type].name, | |
4c544807 | 1414 | name, __FUNCTION__); |
048cbda4 | 1415 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1416 | return FALSE; |
cbe950e9 L |
1417 | |
1418 | case R_386_32: | |
710ab287 L |
1419 | h->non_got_ref = 1; |
1420 | h->pointer_equality_needed = 1; | |
1421 | if (info->shared) | |
1422 | { | |
710ab287 L |
1423 | /* We must copy these reloc types into the |
1424 | output file. Create a reloc section in | |
1425 | dynobj and make room for this reloc. */ | |
e03a8ed8 L |
1426 | sreloc = _bfd_elf_create_ifunc_dyn_reloc |
1427 | (abfd, info, sec, sreloc, | |
1428 | &((struct elf_i386_link_hash_entry *) h)->dyn_relocs); | |
710ab287 | 1429 | if (sreloc == NULL) |
c2e61a4e | 1430 | return FALSE; |
710ab287 L |
1431 | } |
1432 | break; | |
1433 | ||
cbe950e9 L |
1434 | case R_386_PC32: |
1435 | h->non_got_ref = 1; | |
cbe950e9 L |
1436 | break; |
1437 | ||
1438 | case R_386_PLT32: | |
1439 | break; | |
1440 | ||
1441 | case R_386_GOT32: | |
1442 | case R_386_GOTOFF: | |
7afd84dc | 1443 | h->got.refcount += 1; |
6de2ae4a L |
1444 | if (htab->elf.sgot == NULL |
1445 | && !_bfd_elf_create_got_section (htab->elf.dynobj, | |
cbe950e9 | 1446 | info)) |
c2e61a4e | 1447 | return FALSE; |
cbe950e9 L |
1448 | break; |
1449 | } | |
1450 | ||
1451 | continue; | |
1452 | } | |
71cb9464 | 1453 | } |
252b5132 | 1454 | |
142411ca L |
1455 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1456 | symtab_hdr, sym_hashes, | |
1457 | &r_type, GOT_UNKNOWN, | |
4c544807 | 1458 | rel, rel_end, h, r_symndx)) |
c2e61a4e | 1459 | return FALSE; |
13ae64f3 JJ |
1460 | |
1461 | switch (r_type) | |
252b5132 | 1462 | { |
37e55690 JJ |
1463 | case R_386_TLS_LDM: |
1464 | htab->tls_ldm_got.refcount += 1; | |
1465 | goto create_got; | |
1466 | ||
1467 | case R_386_PLT32: | |
1468 | /* This symbol requires a procedure linkage table entry. We | |
1469 | actually build the entry in adjust_dynamic_symbol, | |
1470 | because this might be a case of linking PIC code which is | |
1471 | never referenced by a dynamic object, in which case we | |
1472 | don't need to generate a procedure linkage table entry | |
1473 | after all. */ | |
1474 | ||
1475 | /* If this is a local symbol, we resolve it directly without | |
1476 | creating a procedure linkage table entry. */ | |
1477 | if (h == NULL) | |
1478 | continue; | |
1479 | ||
f5385ebf | 1480 | h->needs_plt = 1; |
37e55690 JJ |
1481 | h->plt.refcount += 1; |
1482 | break; | |
1483 | ||
13ae64f3 | 1484 | case R_386_TLS_IE_32: |
37e55690 JJ |
1485 | case R_386_TLS_IE: |
1486 | case R_386_TLS_GOTIE: | |
1d85728f | 1487 | if (!info->executable) |
13ae64f3 | 1488 | info->flags |= DF_STATIC_TLS; |
37e55690 JJ |
1489 | /* Fall through */ |
1490 | ||
252b5132 | 1491 | case R_386_GOT32: |
13ae64f3 | 1492 | case R_386_TLS_GD: |
67a4f2b7 AO |
1493 | case R_386_TLS_GOTDESC: |
1494 | case R_386_TLS_DESC_CALL: | |
252b5132 | 1495 | /* This symbol requires a global offset table entry. */ |
13ae64f3 JJ |
1496 | { |
1497 | int tls_type, old_tls_type; | |
1498 | ||
1499 | switch (r_type) | |
1500 | { | |
1501 | default: | |
1502 | case R_386_GOT32: tls_type = GOT_NORMAL; break; | |
1503 | case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; | |
67a4f2b7 AO |
1504 | case R_386_TLS_GOTDESC: |
1505 | case R_386_TLS_DESC_CALL: | |
1506 | tls_type = GOT_TLS_GDESC; break; | |
37e55690 JJ |
1507 | case R_386_TLS_IE_32: |
1508 | if (ELF32_R_TYPE (rel->r_info) == r_type) | |
1509 | tls_type = GOT_TLS_IE_NEG; | |
1510 | else | |
ebcfb3c0 JJ |
1511 | /* If this is a GD->IE transition, we may use either of |
1512 | R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ | |
37e55690 JJ |
1513 | tls_type = GOT_TLS_IE; |
1514 | break; | |
1515 | case R_386_TLS_IE: | |
1516 | case R_386_TLS_GOTIE: | |
1517 | tls_type = GOT_TLS_IE_POS; break; | |
13ae64f3 JJ |
1518 | } |
1519 | ||
1520 | if (h != NULL) | |
1521 | { | |
1522 | h->got.refcount += 1; | |
1523 | old_tls_type = elf_i386_hash_entry(h)->tls_type; | |
1524 | } | |
1525 | else | |
1526 | { | |
1527 | bfd_signed_vma *local_got_refcounts; | |
1528 | ||
1529 | /* This is a global offset table entry for a local symbol. */ | |
1530 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1531 | if (local_got_refcounts == NULL) | |
1532 | { | |
1533 | bfd_size_type size; | |
1534 | ||
1535 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
1536 | size *= (sizeof (bfd_signed_vma) |
1537 | + sizeof (bfd_vma) + sizeof(char)); | |
a50b1753 NC |
1538 | local_got_refcounts = (bfd_signed_vma *) |
1539 | bfd_zalloc (abfd, size); | |
13ae64f3 | 1540 | if (local_got_refcounts == NULL) |
c2e61a4e | 1541 | return FALSE; |
13ae64f3 | 1542 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
67a4f2b7 AO |
1543 | elf_i386_local_tlsdesc_gotent (abfd) |
1544 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); | |
13ae64f3 | 1545 | elf_i386_local_got_tls_type (abfd) |
67a4f2b7 | 1546 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
13ae64f3 JJ |
1547 | } |
1548 | local_got_refcounts[r_symndx] += 1; | |
1549 | old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx]; | |
1550 | } | |
1551 | ||
37e55690 JJ |
1552 | if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) |
1553 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1554 | /* If a TLS symbol is accessed using IE at least once, |
1555 | there is no point to use dynamic model for it. */ | |
ebcfb3c0 | 1556 | else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
67a4f2b7 | 1557 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
37e55690 | 1558 | || (tls_type & GOT_TLS_IE) == 0)) |
13ae64f3 | 1559 | { |
67a4f2b7 | 1560 | if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type)) |
37e55690 | 1561 | tls_type = old_tls_type; |
67a4f2b7 AO |
1562 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
1563 | && GOT_TLS_GD_ANY_P (tls_type)) | |
1564 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1565 | else |
1566 | { | |
09a24cbf | 1567 | if (h) |
4c544807 L |
1568 | name = h->root.root.string; |
1569 | else | |
1570 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1571 | NULL); | |
13ae64f3 | 1572 | (*_bfd_error_handler) |
d003868e | 1573 | (_("%B: `%s' accessed both as normal and " |
55fd94b0 | 1574 | "thread local symbol"), |
4c544807 | 1575 | abfd, name); |
c2e61a4e | 1576 | return FALSE; |
13ae64f3 JJ |
1577 | } |
1578 | } | |
1579 | ||
1580 | if (old_tls_type != tls_type) | |
1581 | { | |
1582 | if (h != NULL) | |
1583 | elf_i386_hash_entry (h)->tls_type = tls_type; | |
1584 | else | |
1585 | elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1586 | } | |
1587 | } | |
0ac8d2ca AM |
1588 | /* Fall through */ |
1589 | ||
1590 | case R_386_GOTOFF: | |
1591 | case R_386_GOTPC: | |
13ae64f3 | 1592 | create_got: |
6de2ae4a | 1593 | if (htab->elf.sgot == NULL) |
0ac8d2ca AM |
1594 | { |
1595 | if (htab->elf.dynobj == NULL) | |
1596 | htab->elf.dynobj = abfd; | |
6de2ae4a | 1597 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) |
c2e61a4e | 1598 | return FALSE; |
0ac8d2ca | 1599 | } |
37e55690 JJ |
1600 | if (r_type != R_386_TLS_IE) |
1601 | break; | |
1602 | /* Fall through */ | |
252b5132 | 1603 | |
37e55690 JJ |
1604 | case R_386_TLS_LE_32: |
1605 | case R_386_TLS_LE: | |
1d85728f | 1606 | if (info->executable) |
37e55690 | 1607 | break; |
bffbf940 | 1608 | info->flags |= DF_STATIC_TLS; |
b34976b6 | 1609 | /* Fall through */ |
252b5132 RH |
1610 | |
1611 | case R_386_32: | |
1612 | case R_386_PC32: | |
710ab287 | 1613 | if (h != NULL && info->executable) |
6725bdbf | 1614 | { |
12d0ee4a | 1615 | /* If this reloc is in a read-only section, we might |
ebe50bae AM |
1616 | need a copy reloc. We can't check reliably at this |
1617 | stage whether the section is read-only, as input | |
1618 | sections have not yet been mapped to output sections. | |
1619 | Tentatively set the flag for now, and correct in | |
1620 | adjust_dynamic_symbol. */ | |
f5385ebf | 1621 | h->non_got_ref = 1; |
12d0ee4a AM |
1622 | |
1623 | /* We may need a .plt entry if the function this reloc | |
1624 | refers to is in a shared lib. */ | |
51b64d56 | 1625 | h->plt.refcount += 1; |
c6585bbb | 1626 | if (r_type != R_386_PC32) |
f5385ebf | 1627 | h->pointer_equality_needed = 1; |
6725bdbf | 1628 | } |
7843f00e | 1629 | |
252b5132 | 1630 | /* If we are creating a shared library, and this is a reloc |
f69da49f AM |
1631 | against a global symbol, or a non PC relative reloc |
1632 | against a local symbol, then we need to copy the reloc | |
1633 | into the shared library. However, if we are linking with | |
1634 | -Bsymbolic, we do not need to copy a reloc against a | |
1635 | global symbol which is defined in an object we are | |
1636 | including in the link (i.e., DEF_REGULAR is set). At | |
1637 | this point we have not seen all the input files, so it is | |
1638 | possible that DEF_REGULAR is not set now but will be set | |
1f655a09 L |
1639 | later (it is never cleared). In case of a weak definition, |
1640 | DEF_REGULAR may be cleared later by a strong definition in | |
ebe50bae | 1641 | a shared library. We account for that possibility below by |
1f655a09 L |
1642 | storing information in the relocs_copied field of the hash |
1643 | table entry. A similar situation occurs when creating | |
1644 | shared libraries and symbol visibility changes render the | |
12d0ee4a | 1645 | symbol local. |
56882138 | 1646 | |
12d0ee4a AM |
1647 | If on the other hand, we are creating an executable, we |
1648 | may need to keep relocations for symbols satisfied by a | |
1649 | dynamic library if we manage to avoid copy relocs for the | |
1650 | symbol. */ | |
1651 | if ((info->shared | |
1652 | && (sec->flags & SEC_ALLOC) != 0 | |
13ae64f3 | 1653 | && (r_type != R_386_PC32 |
12d0ee4a | 1654 | || (h != NULL |
55255dae | 1655 | && (! SYMBOLIC_BIND (info, h) |
12d0ee4a | 1656 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1657 | || !h->def_regular)))) |
a23b6845 AM |
1658 | || (ELIMINATE_COPY_RELOCS |
1659 | && !info->shared | |
12d0ee4a AM |
1660 | && (sec->flags & SEC_ALLOC) != 0 |
1661 | && h != NULL | |
12d0ee4a | 1662 | && (h->root.type == bfd_link_hash_defweak |
0f88be7a | 1663 | || !h->def_regular))) |
252b5132 | 1664 | { |
e03a8ed8 L |
1665 | struct elf_dyn_relocs *p; |
1666 | struct elf_dyn_relocs **head; | |
ec338859 | 1667 | |
12d0ee4a AM |
1668 | /* We must copy these reloc types into the output file. |
1669 | Create a reloc section in dynobj and make room for | |
1670 | this reloc. */ | |
252b5132 RH |
1671 | if (sreloc == NULL) |
1672 | { | |
0ac8d2ca AM |
1673 | if (htab->elf.dynobj == NULL) |
1674 | htab->elf.dynobj = abfd; | |
1675 | ||
83bac4b0 NC |
1676 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1677 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE); | |
1678 | ||
252b5132 | 1679 | if (sreloc == NULL) |
c2e61a4e | 1680 | return FALSE; |
252b5132 RH |
1681 | } |
1682 | ||
0c715baa AM |
1683 | /* If this is a global symbol, we count the number of |
1684 | relocations we need for this symbol. */ | |
1685 | if (h != NULL) | |
252b5132 | 1686 | { |
ec338859 | 1687 | head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs; |
0c715baa AM |
1688 | } |
1689 | else | |
1690 | { | |
ec338859 AM |
1691 | /* Track dynamic relocs needed for local syms too. |
1692 | We really need local syms available to do this | |
1693 | easily. Oh well. */ | |
87d72d41 | 1694 | void **vpp; |
ec338859 | 1695 | asection *s; |
87d72d41 AM |
1696 | |
1697 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1698 | abfd, r_symndx); | |
1699 | if (isym == NULL) | |
1700 | return FALSE; | |
1701 | ||
1702 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
ec338859 | 1703 | if (s == NULL) |
87d72d41 | 1704 | s = sec; |
ec338859 | 1705 | |
e81d3500 | 1706 | vpp = &elf_section_data (s)->local_dynrel; |
e03a8ed8 | 1707 | head = (struct elf_dyn_relocs **)vpp; |
ec338859 AM |
1708 | } |
1709 | ||
1710 | p = *head; | |
1711 | if (p == NULL || p->sec != sec) | |
1712 | { | |
1713 | bfd_size_type amt = sizeof *p; | |
a50b1753 NC |
1714 | p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj, |
1715 | amt); | |
ec338859 | 1716 | if (p == NULL) |
c2e61a4e | 1717 | return FALSE; |
ec338859 AM |
1718 | p->next = *head; |
1719 | *head = p; | |
1720 | p->sec = sec; | |
1721 | p->count = 0; | |
1722 | p->pc_count = 0; | |
252b5132 | 1723 | } |
ec338859 AM |
1724 | |
1725 | p->count += 1; | |
13ae64f3 | 1726 | if (r_type == R_386_PC32) |
ec338859 | 1727 | p->pc_count += 1; |
252b5132 | 1728 | } |
252b5132 RH |
1729 | break; |
1730 | ||
1731 | /* This relocation describes the C++ object vtable hierarchy. | |
1732 | Reconstruct it for later use during GC. */ | |
1733 | case R_386_GNU_VTINHERIT: | |
d17e0c6e | 1734 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
c2e61a4e | 1735 | return FALSE; |
252b5132 RH |
1736 | break; |
1737 | ||
1738 | /* This relocation describes which C++ vtable entries are actually | |
1739 | used. Record for later use during GC. */ | |
1740 | case R_386_GNU_VTENTRY: | |
c6aa130f MS |
1741 | BFD_ASSERT (h != NULL); |
1742 | if (h != NULL | |
1743 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
c2e61a4e | 1744 | return FALSE; |
252b5132 RH |
1745 | break; |
1746 | ||
1747 | default: | |
1748 | break; | |
1749 | } | |
1750 | } | |
1751 | ||
b34976b6 | 1752 | return TRUE; |
252b5132 RH |
1753 | } |
1754 | ||
1755 | /* Return the section that should be marked against GC for a given | |
1756 | relocation. */ | |
1757 | ||
1758 | static asection * | |
55fd94b0 | 1759 | elf_i386_gc_mark_hook (asection *sec, |
07adf181 | 1760 | struct bfd_link_info *info, |
55fd94b0 AM |
1761 | Elf_Internal_Rela *rel, |
1762 | struct elf_link_hash_entry *h, | |
1763 | Elf_Internal_Sym *sym) | |
252b5132 RH |
1764 | { |
1765 | if (h != NULL) | |
07adf181 AM |
1766 | switch (ELF32_R_TYPE (rel->r_info)) |
1767 | { | |
1768 | case R_386_GNU_VTINHERIT: | |
1769 | case R_386_GNU_VTENTRY: | |
1770 | return NULL; | |
1771 | } | |
1772 | ||
1773 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
1774 | } |
1775 | ||
1776 | /* Update the got entry reference counts for the section being removed. */ | |
1777 | ||
b34976b6 | 1778 | static bfd_boolean |
55fd94b0 AM |
1779 | elf_i386_gc_sweep_hook (bfd *abfd, |
1780 | struct bfd_link_info *info, | |
1781 | asection *sec, | |
1782 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1783 | { |
4dfe6ac6 | 1784 | struct elf_i386_link_hash_table *htab; |
dd5724d5 AM |
1785 | Elf_Internal_Shdr *symtab_hdr; |
1786 | struct elf_link_hash_entry **sym_hashes; | |
1787 | bfd_signed_vma *local_got_refcounts; | |
1788 | const Elf_Internal_Rela *rel, *relend; | |
dd5724d5 | 1789 | |
7dda2462 TG |
1790 | if (info->relocatable) |
1791 | return TRUE; | |
1792 | ||
4dfe6ac6 NC |
1793 | htab = elf_i386_hash_table (info); |
1794 | if (htab == NULL) | |
1795 | return FALSE; | |
1796 | ||
ec338859 | 1797 | elf_section_data (sec)->local_dynrel = NULL; |
dd5724d5 | 1798 | |
0ffa91dd | 1799 | symtab_hdr = &elf_symtab_hdr (abfd); |
6725bdbf AM |
1800 | sym_hashes = elf_sym_hashes (abfd); |
1801 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
dd5724d5 AM |
1802 | |
1803 | relend = relocs + sec->reloc_count; | |
1804 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1805 | { |
1806 | unsigned long r_symndx; | |
1807 | unsigned int r_type; | |
1808 | struct elf_link_hash_entry *h = NULL; | |
37e55690 | 1809 | |
26e41594 AM |
1810 | r_symndx = ELF32_R_SYM (rel->r_info); |
1811 | if (r_symndx >= symtab_hdr->sh_info) | |
1812 | { | |
26e41594 | 1813 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1814 | while (h->root.type == bfd_link_hash_indirect |
1815 | || h->root.type == bfd_link_hash_warning) | |
1816 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1817 | } |
bb1cb422 L |
1818 | else |
1819 | { | |
1820 | /* A local symbol. */ | |
1821 | Elf_Internal_Sym *isym; | |
1822 | ||
1823 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1824 | abfd, r_symndx); | |
1825 | ||
1826 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
1827 | if (isym != NULL | |
1828 | && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
1829 | { | |
1830 | h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE); | |
1831 | if (h == NULL) | |
1832 | abort (); | |
1833 | } | |
1834 | } | |
0c715baa | 1835 | |
3db2e7dd L |
1836 | if (h) |
1837 | { | |
1838 | struct elf_i386_link_hash_entry *eh; | |
1839 | struct elf_dyn_relocs **pp; | |
1840 | struct elf_dyn_relocs *p; | |
1841 | ||
1842 | eh = (struct elf_i386_link_hash_entry *) h; | |
1843 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
1844 | if (p->sec == sec) | |
1845 | { | |
1846 | /* Everything must go for SEC. */ | |
1847 | *pp = p->next; | |
1848 | break; | |
1849 | } | |
1850 | } | |
1851 | ||
26e41594 | 1852 | r_type = ELF32_R_TYPE (rel->r_info); |
142411ca L |
1853 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1854 | symtab_hdr, sym_hashes, | |
1855 | &r_type, GOT_UNKNOWN, | |
4c544807 | 1856 | rel, relend, h, r_symndx)) |
142411ca L |
1857 | return FALSE; |
1858 | ||
26e41594 AM |
1859 | switch (r_type) |
1860 | { | |
1861 | case R_386_TLS_LDM: | |
4dfe6ac6 NC |
1862 | if (htab->tls_ldm_got.refcount > 0) |
1863 | htab->tls_ldm_got.refcount -= 1; | |
26e41594 | 1864 | break; |
0c715baa | 1865 | |
26e41594 | 1866 | case R_386_TLS_GD: |
67a4f2b7 AO |
1867 | case R_386_TLS_GOTDESC: |
1868 | case R_386_TLS_DESC_CALL: | |
26e41594 AM |
1869 | case R_386_TLS_IE_32: |
1870 | case R_386_TLS_IE: | |
1871 | case R_386_TLS_GOTIE: | |
1872 | case R_386_GOT32: | |
1873 | if (h != NULL) | |
1874 | { | |
1875 | if (h->got.refcount > 0) | |
1876 | h->got.refcount -= 1; | |
bb1cb422 L |
1877 | if (h->type == STT_GNU_IFUNC) |
1878 | { | |
1879 | if (h->plt.refcount > 0) | |
1880 | h->plt.refcount -= 1; | |
1881 | } | |
26e41594 AM |
1882 | } |
1883 | else if (local_got_refcounts != NULL) | |
1884 | { | |
1885 | if (local_got_refcounts[r_symndx] > 0) | |
1886 | local_got_refcounts[r_symndx] -= 1; | |
1887 | } | |
1888 | break; | |
0c715baa | 1889 | |
26e41594 AM |
1890 | case R_386_32: |
1891 | case R_386_PC32: | |
3db2e7dd L |
1892 | if (info->shared |
1893 | && (h == NULL || h->type != STT_GNU_IFUNC)) | |
26e41594 AM |
1894 | break; |
1895 | /* Fall through */ | |
6725bdbf | 1896 | |
26e41594 AM |
1897 | case R_386_PLT32: |
1898 | if (h != NULL) | |
1899 | { | |
1900 | if (h->plt.refcount > 0) | |
1901 | h->plt.refcount -= 1; | |
1902 | } | |
1903 | break; | |
dd5724d5 | 1904 | |
bb1cb422 L |
1905 | case R_386_GOTOFF: |
1906 | if (h != NULL && h->type == STT_GNU_IFUNC) | |
1907 | { | |
1908 | if (h->got.refcount > 0) | |
1909 | h->got.refcount -= 1; | |
1910 | if (h->plt.refcount > 0) | |
1911 | h->plt.refcount -= 1; | |
1912 | } | |
1913 | break; | |
1914 | ||
26e41594 AM |
1915 | default: |
1916 | break; | |
1917 | } | |
1918 | } | |
252b5132 | 1919 | |
b34976b6 | 1920 | return TRUE; |
252b5132 RH |
1921 | } |
1922 | ||
1923 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1924 | regular object. The current definition is in some section of the | |
1925 | dynamic object, but we're not including those sections. We have to | |
1926 | change the definition to something the rest of the link can | |
1927 | understand. */ | |
1928 | ||
b34976b6 | 1929 | static bfd_boolean |
55fd94b0 AM |
1930 | elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info, |
1931 | struct elf_link_hash_entry *h) | |
252b5132 | 1932 | { |
6725bdbf | 1933 | struct elf_i386_link_hash_table *htab; |
252b5132 | 1934 | asection *s; |
252b5132 | 1935 | |
cbe950e9 L |
1936 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
1937 | if (h->type == STT_GNU_IFUNC) | |
1938 | { | |
1939 | if (h->plt.refcount <= 0) | |
1940 | { | |
1941 | h->plt.offset = (bfd_vma) -1; | |
1942 | h->needs_plt = 0; | |
1943 | } | |
1944 | return TRUE; | |
1945 | } | |
1946 | ||
252b5132 RH |
1947 | /* If this is a function, put it in the procedure linkage table. We |
1948 | will fill in the contents of the procedure linkage table later, | |
1949 | when we know the address of the .got section. */ | |
1950 | if (h->type == STT_FUNC | |
f5385ebf | 1951 | || h->needs_plt) |
252b5132 | 1952 | { |
6725bdbf | 1953 | if (h->plt.refcount <= 0 |
9c7a29a3 AM |
1954 | || SYMBOL_CALLS_LOCAL (info, h) |
1955 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1956 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
1957 | { |
1958 | /* This case can occur if we saw a PLT32 reloc in an input | |
dd5724d5 AM |
1959 | file, but the symbol was never referred to by a dynamic |
1960 | object, or if all references were garbage collected. In | |
1961 | such a case, we don't actually need to build a procedure | |
1962 | linkage table, and we can just do a PC32 reloc instead. */ | |
bbd7ec4a | 1963 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 1964 | h->needs_plt = 0; |
252b5132 RH |
1965 | } |
1966 | ||
b34976b6 | 1967 | return TRUE; |
252b5132 | 1968 | } |
6725bdbf AM |
1969 | else |
1970 | /* It's possible that we incorrectly decided a .plt reloc was | |
1971 | needed for an R_386_PC32 reloc to a non-function sym in | |
1972 | check_relocs. We can't decide accurately between function and | |
1973 | non-function syms in check-relocs; Objects loaded later in | |
1974 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1975 | h->plt.offset = (bfd_vma) -1; |
252b5132 RH |
1976 | |
1977 | /* If this is a weak symbol, and there is a real definition, the | |
1978 | processor independent code will have arranged for us to see the | |
1979 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 1980 | if (h->u.weakdef != NULL) |
252b5132 | 1981 | { |
f6e332e6 AM |
1982 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
1983 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1984 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1985 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 1986 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 1987 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 1988 | return TRUE; |
252b5132 RH |
1989 | } |
1990 | ||
1991 | /* This is a reference to a symbol defined by a dynamic object which | |
1992 | is not a function. */ | |
1993 | ||
1994 | /* If we are creating a shared library, we must presume that the | |
1995 | only references to the symbol are via the global offset table. | |
1996 | For such cases we need not do anything here; the relocations will | |
1997 | be handled correctly by relocate_section. */ | |
1998 | if (info->shared) | |
b34976b6 | 1999 | return TRUE; |
252b5132 | 2000 | |
7843f00e ILT |
2001 | /* If there are no references to this symbol that do not use the |
2002 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 2003 | if (!h->non_got_ref) |
b34976b6 | 2004 | return TRUE; |
7843f00e | 2005 | |
8bd621d8 AM |
2006 | /* If -z nocopyreloc was given, we won't generate them either. */ |
2007 | if (info->nocopyreloc) | |
2008 | { | |
f5385ebf | 2009 | h->non_got_ref = 0; |
b34976b6 | 2010 | return TRUE; |
8bd621d8 AM |
2011 | } |
2012 | ||
643796e3 | 2013 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
2014 | if (htab == NULL) |
2015 | return FALSE; | |
643796e3 DJ |
2016 | |
2017 | /* If there aren't any dynamic relocs in read-only sections, then | |
2018 | we can keep the dynamic relocs and avoid the copy reloc. This | |
2019 | doesn't work on VxWorks, where we can not have dynamic relocations | |
2020 | (other than copy and jump slot relocations) in an executable. */ | |
2021 | if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks) | |
ebe50bae | 2022 | { |
a23b6845 | 2023 | struct elf_i386_link_hash_entry * eh; |
e03a8ed8 | 2024 | struct elf_dyn_relocs *p; |
ebe50bae | 2025 | |
a23b6845 AM |
2026 | eh = (struct elf_i386_link_hash_entry *) h; |
2027 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2028 | { | |
2029 | s = p->sec->output_section; | |
2030 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2031 | break; | |
2032 | } | |
2033 | ||
a23b6845 AM |
2034 | if (p == NULL) |
2035 | { | |
f5385ebf | 2036 | h->non_got_ref = 0; |
a23b6845 AM |
2037 | return TRUE; |
2038 | } | |
ebe50bae AM |
2039 | } |
2040 | ||
909272ee AM |
2041 | if (h->size == 0) |
2042 | { | |
2043 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
2044 | h->root.root.string); | |
2045 | return TRUE; | |
2046 | } | |
2047 | ||
252b5132 RH |
2048 | /* We must allocate the symbol in our .dynbss section, which will |
2049 | become part of the .bss section of the executable. There will be | |
2050 | an entry for this symbol in the .dynsym section. The dynamic | |
2051 | object will contain position independent code, so all references | |
2052 | from the dynamic object to this symbol will go through the global | |
2053 | offset table. The dynamic linker will use the .dynsym entry to | |
2054 | determine the address it must put in the global offset table, so | |
2055 | both the dynamic object and the regular object will refer to the | |
2056 | same memory location for the variable. */ | |
2057 | ||
252b5132 RH |
2058 | /* We must generate a R_386_COPY reloc to tell the dynamic linker to |
2059 | copy the initial value out of the dynamic object and into the | |
0ac8d2ca | 2060 | runtime process image. */ |
252b5132 RH |
2061 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
2062 | { | |
eea6121a | 2063 | htab->srelbss->size += sizeof (Elf32_External_Rel); |
f5385ebf | 2064 | h->needs_copy = 1; |
252b5132 RH |
2065 | } |
2066 | ||
0ac8d2ca | 2067 | s = htab->sdynbss; |
252b5132 | 2068 | |
027297b7 | 2069 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
2070 | } |
2071 | ||
6725bdbf | 2072 | /* Allocate space in .plt, .got and associated reloc sections for |
0c715baa | 2073 | dynamic relocs. */ |
6725bdbf | 2074 | |
b34976b6 | 2075 | static bfd_boolean |
eb4ff4d6 | 2076 | elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
6725bdbf AM |
2077 | { |
2078 | struct bfd_link_info *info; | |
2079 | struct elf_i386_link_hash_table *htab; | |
5a15f56f | 2080 | struct elf_i386_link_hash_entry *eh; |
e03a8ed8 | 2081 | struct elf_dyn_relocs *p; |
6725bdbf | 2082 | |
e92d460e | 2083 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 2084 | return TRUE; |
6725bdbf | 2085 | |
e92d460e AM |
2086 | if (h->root.type == bfd_link_hash_warning) |
2087 | /* When warning symbols are created, they **replace** the "real" | |
2088 | entry in the hash table, thus we never get to see the real | |
2089 | symbol in a hash traversal. So look at it now. */ | |
2090 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
cbe950e9 | 2091 | eh = (struct elf_i386_link_hash_entry *) h; |
e92d460e | 2092 | |
6725bdbf AM |
2093 | info = (struct bfd_link_info *) inf; |
2094 | htab = elf_i386_hash_table (info); | |
4dfe6ac6 NC |
2095 | if (htab == NULL) |
2096 | return FALSE; | |
6725bdbf | 2097 | |
cbe950e9 L |
2098 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
2099 | here if it is defined and referenced in a non-shared object. */ | |
2100 | if (h->type == STT_GNU_IFUNC | |
2101 | && h->def_regular) | |
e03a8ed8 L |
2102 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, |
2103 | &eh->dyn_relocs, | |
2104 | PLT_ENTRY_SIZE, 4); | |
cbe950e9 L |
2105 | else if (htab->elf.dynamic_sections_created |
2106 | && h->plt.refcount > 0) | |
6725bdbf | 2107 | { |
5a15f56f AM |
2108 | /* Make sure this symbol is output as a dynamic symbol. |
2109 | Undefined weak syms won't yet be marked as dynamic. */ | |
2110 | if (h->dynindx == -1 | |
f5385ebf | 2111 | && !h->forced_local) |
5a15f56f | 2112 | { |
c152c796 | 2113 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2114 | return FALSE; |
5a15f56f AM |
2115 | } |
2116 | ||
4e795f50 AM |
2117 | if (info->shared |
2118 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
ced53ee5 | 2119 | { |
6de2ae4a | 2120 | asection *s = htab->elf.splt; |
6725bdbf | 2121 | |
ced53ee5 AM |
2122 | /* If this is the first .plt entry, make room for the special |
2123 | first entry. */ | |
eea6121a AM |
2124 | if (s->size == 0) |
2125 | s->size += PLT_ENTRY_SIZE; | |
6725bdbf | 2126 | |
eea6121a | 2127 | h->plt.offset = s->size; |
6725bdbf | 2128 | |
ced53ee5 AM |
2129 | /* If this symbol is not defined in a regular file, and we are |
2130 | not generating a shared library, then set the symbol to this | |
2131 | location in the .plt. This is required to make function | |
2132 | pointers compare as equal between the normal executable and | |
2133 | the shared library. */ | |
2134 | if (! info->shared | |
f5385ebf | 2135 | && !h->def_regular) |
ced53ee5 AM |
2136 | { |
2137 | h->root.u.def.section = s; | |
2138 | h->root.u.def.value = h->plt.offset; | |
2139 | } | |
6725bdbf | 2140 | |
ced53ee5 | 2141 | /* Make room for this entry. */ |
eea6121a | 2142 | s->size += PLT_ENTRY_SIZE; |
6725bdbf | 2143 | |
ced53ee5 AM |
2144 | /* We also need to make an entry in the .got.plt section, which |
2145 | will be placed in the .got section by the linker script. */ | |
6de2ae4a | 2146 | htab->elf.sgotplt->size += 4; |
6725bdbf | 2147 | |
6725bdbf | 2148 | /* We also need to make an entry in the .rel.plt section. */ |
6de2ae4a | 2149 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
5ae0bfb6 | 2150 | htab->next_tls_desc_index++; |
eac338cf PB |
2151 | |
2152 | if (htab->is_vxworks && !info->shared) | |
2153 | { | |
2154 | /* VxWorks has a second set of relocations for each PLT entry | |
2155 | in executables. They go in a separate relocation section, | |
2156 | which is processed by the kernel loader. */ | |
2157 | ||
2158 | /* There are two relocations for the initial PLT entry: an | |
2159 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an | |
2160 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
2161 | ||
2162 | if (h->plt.offset == PLT_ENTRY_SIZE) | |
2163 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); | |
2164 | ||
2165 | /* There are two extra relocations for each subsequent PLT entry: | |
2166 | an R_386_32 relocation for the GOT entry, and an R_386_32 | |
2167 | relocation for the PLT entry. */ | |
2168 | ||
2169 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); | |
2170 | } | |
6725bdbf | 2171 | } |
ced53ee5 AM |
2172 | else |
2173 | { | |
51b64d56 | 2174 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2175 | h->needs_plt = 0; |
ced53ee5 | 2176 | } |
6725bdbf AM |
2177 | } |
2178 | else | |
2179 | { | |
51b64d56 | 2180 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2181 | h->needs_plt = 0; |
6725bdbf AM |
2182 | } |
2183 | ||
67a4f2b7 AO |
2184 | eh->tlsdesc_got = (bfd_vma) -1; |
2185 | ||
37e55690 | 2186 | /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, |
13ae64f3 JJ |
2187 | make it a R_386_TLS_LE_32 requiring no TLS entry. */ |
2188 | if (h->got.refcount > 0 | |
1d85728f | 2189 | && info->executable |
13ae64f3 | 2190 | && h->dynindx == -1 |
37e55690 | 2191 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE)) |
cedb70c5 | 2192 | h->got.offset = (bfd_vma) -1; |
13ae64f3 | 2193 | else if (h->got.refcount > 0) |
6725bdbf | 2194 | { |
0ac8d2ca | 2195 | asection *s; |
b34976b6 | 2196 | bfd_boolean dyn; |
13ae64f3 | 2197 | int tls_type = elf_i386_hash_entry(h)->tls_type; |
6725bdbf | 2198 | |
5a15f56f AM |
2199 | /* Make sure this symbol is output as a dynamic symbol. |
2200 | Undefined weak syms won't yet be marked as dynamic. */ | |
2201 | if (h->dynindx == -1 | |
f5385ebf | 2202 | && !h->forced_local) |
5a15f56f | 2203 | { |
c152c796 | 2204 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2205 | return FALSE; |
5a15f56f AM |
2206 | } |
2207 | ||
6de2ae4a | 2208 | s = htab->elf.sgot; |
67a4f2b7 AO |
2209 | if (GOT_TLS_GDESC_P (tls_type)) |
2210 | { | |
6de2ae4a | 2211 | eh->tlsdesc_got = htab->elf.sgotplt->size |
67a4f2b7 | 2212 | - elf_i386_compute_jump_table_size (htab); |
6de2ae4a | 2213 | htab->elf.sgotplt->size += 8; |
67a4f2b7 AO |
2214 | h->got.offset = (bfd_vma) -2; |
2215 | } | |
2216 | if (! GOT_TLS_GDESC_P (tls_type) | |
2217 | || GOT_TLS_GD_P (tls_type)) | |
2218 | { | |
2219 | h->got.offset = s->size; | |
2220 | s->size += 4; | |
2221 | /* R_386_TLS_GD needs 2 consecutive GOT slots. */ | |
2222 | if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH) | |
2223 | s->size += 4; | |
2224 | } | |
ebe50bae | 2225 | dyn = htab->elf.dynamic_sections_created; |
13ae64f3 | 2226 | /* R_386_TLS_IE_32 needs one dynamic relocation, |
37e55690 JJ |
2227 | R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, |
2228 | (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we | |
2229 | need two), R_386_TLS_GD needs one if local symbol and two if | |
2230 | global. */ | |
2231 | if (tls_type == GOT_TLS_IE_BOTH) | |
6de2ae4a | 2232 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 | 2233 | else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1) |
37e55690 | 2234 | || (tls_type & GOT_TLS_IE)) |
6de2ae4a | 2235 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2236 | else if (GOT_TLS_GD_P (tls_type)) |
6de2ae4a | 2237 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2238 | else if (! GOT_TLS_GDESC_P (tls_type) |
2239 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2240 | || h->root.type != bfd_link_hash_undefweak) | |
ef5aade5 L |
2241 | && (info->shared |
2242 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
6de2ae4a | 2243 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2244 | if (GOT_TLS_GDESC_P (tls_type)) |
6de2ae4a | 2245 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
6725bdbf AM |
2246 | } |
2247 | else | |
51b64d56 | 2248 | h->got.offset = (bfd_vma) -1; |
6725bdbf | 2249 | |
5a15f56f | 2250 | if (eh->dyn_relocs == NULL) |
b34976b6 | 2251 | return TRUE; |
5a15f56f | 2252 | |
0c715baa AM |
2253 | /* In the shared -Bsymbolic case, discard space allocated for |
2254 | dynamic pc-relative relocs against symbols which turn out to be | |
2255 | defined in regular objects. For the normal shared case, discard | |
0ac8d2ca AM |
2256 | space for pc-relative relocs that have become local due to symbol |
2257 | visibility changes. */ | |
0c715baa AM |
2258 | |
2259 | if (info->shared) | |
5a15f56f | 2260 | { |
09695f56 AM |
2261 | /* The only reloc that uses pc_count is R_386_PC32, which will |
2262 | appear on a call or on something like ".long foo - .". We | |
2263 | want calls to protected symbols to resolve directly to the | |
2264 | function rather than going via the plt. If people want | |
2265 | function pointer comparisons to work as expected then they | |
2266 | should avoid writing assembly like ".long foo - .". */ | |
2267 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
5a15f56f | 2268 | { |
e03a8ed8 | 2269 | struct elf_dyn_relocs **pp; |
0c715baa AM |
2270 | |
2271 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2272 | { | |
2273 | p->count -= p->pc_count; | |
2274 | p->pc_count = 0; | |
2275 | if (p->count == 0) | |
2276 | *pp = p->next; | |
2277 | else | |
2278 | pp = &p->next; | |
2279 | } | |
5a15f56f | 2280 | } |
4e795f50 | 2281 | |
3348747a NS |
2282 | if (htab->is_vxworks) |
2283 | { | |
e03a8ed8 | 2284 | struct elf_dyn_relocs **pp; |
3348747a NS |
2285 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
2286 | { | |
2287 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
2288 | *pp = p->next; | |
2289 | else | |
2290 | pp = &p->next; | |
2291 | } | |
2292 | } | |
2293 | ||
4e795f50 | 2294 | /* Also discard relocs on undefined weak syms with non-default |
3348747a | 2295 | visibility. */ |
22d606e9 | 2296 | if (eh->dyn_relocs != NULL |
4e795f50 | 2297 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
2298 | { |
2299 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2300 | eh->dyn_relocs = NULL; | |
2301 | ||
2302 | /* Make sure undefined weak symbols are output as a dynamic | |
2303 | symbol in PIEs. */ | |
2304 | else if (h->dynindx == -1 | |
2305 | && !h->forced_local) | |
2306 | { | |
2307 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2308 | return FALSE; | |
2309 | } | |
2310 | } | |
0c715baa | 2311 | } |
a23b6845 | 2312 | else if (ELIMINATE_COPY_RELOCS) |
0c715baa AM |
2313 | { |
2314 | /* For the non-shared case, discard space for relocs against | |
2315 | symbols which turn out to need copy relocs or are not | |
2316 | dynamic. */ | |
2317 | ||
f5385ebf AM |
2318 | if (!h->non_got_ref |
2319 | && ((h->def_dynamic | |
2320 | && !h->def_regular) | |
ebe50bae | 2321 | || (htab->elf.dynamic_sections_created |
0c715baa AM |
2322 | && (h->root.type == bfd_link_hash_undefweak |
2323 | || h->root.type == bfd_link_hash_undefined)))) | |
2324 | { | |
2325 | /* Make sure this symbol is output as a dynamic symbol. | |
2326 | Undefined weak syms won't yet be marked as dynamic. */ | |
2327 | if (h->dynindx == -1 | |
f5385ebf | 2328 | && !h->forced_local) |
0c715baa | 2329 | { |
c152c796 | 2330 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2331 | return FALSE; |
0c715baa | 2332 | } |
5a15f56f | 2333 | |
0c715baa AM |
2334 | /* If that succeeded, we know we'll be keeping all the |
2335 | relocs. */ | |
2336 | if (h->dynindx != -1) | |
2337 | goto keep; | |
2338 | } | |
2339 | ||
2340 | eh->dyn_relocs = NULL; | |
2341 | ||
ec338859 | 2342 | keep: ; |
5a15f56f AM |
2343 | } |
2344 | ||
0c715baa AM |
2345 | /* Finally, allocate space. */ |
2346 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
12d0ee4a | 2347 | { |
e7c33416 NC |
2348 | asection *sreloc; |
2349 | ||
cbe950e9 | 2350 | sreloc = elf_section_data (p->sec)->sreloc; |
e7c33416 NC |
2351 | |
2352 | BFD_ASSERT (sreloc != NULL); | |
eea6121a | 2353 | sreloc->size += p->count * sizeof (Elf32_External_Rel); |
12d0ee4a AM |
2354 | } |
2355 | ||
b34976b6 | 2356 | return TRUE; |
6725bdbf AM |
2357 | } |
2358 | ||
c25bc9fc L |
2359 | /* Allocate space in .plt, .got and associated reloc sections for |
2360 | local dynamic relocs. */ | |
2361 | ||
2362 | static bfd_boolean | |
2363 | elf_i386_allocate_local_dynrelocs (void **slot, void *inf) | |
2364 | { | |
2365 | struct elf_link_hash_entry *h | |
2366 | = (struct elf_link_hash_entry *) *slot; | |
2367 | ||
2368 | if (h->type != STT_GNU_IFUNC | |
2369 | || !h->def_regular | |
2370 | || !h->ref_regular | |
2371 | || !h->forced_local | |
2372 | || h->root.type != bfd_link_hash_defined) | |
2373 | abort (); | |
2374 | ||
2375 | return elf_i386_allocate_dynrelocs (h, inf); | |
2376 | } | |
2377 | ||
0c715baa AM |
2378 | /* Find any dynamic relocs that apply to read-only sections. */ |
2379 | ||
b34976b6 | 2380 | static bfd_boolean |
eb4ff4d6 | 2381 | elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
0c715baa AM |
2382 | { |
2383 | struct elf_i386_link_hash_entry *eh; | |
e03a8ed8 | 2384 | struct elf_dyn_relocs *p; |
0c715baa | 2385 | |
e92d460e AM |
2386 | if (h->root.type == bfd_link_hash_warning) |
2387 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2388 | ||
aa715242 L |
2389 | /* Skip local IFUNC symbols. */ |
2390 | if (h->forced_local && h->type == STT_GNU_IFUNC) | |
2391 | return TRUE; | |
2392 | ||
0c715baa AM |
2393 | eh = (struct elf_i386_link_hash_entry *) h; |
2394 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2395 | { | |
2396 | asection *s = p->sec->output_section; | |
2397 | ||
2398 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2399 | { | |
2400 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2401 | ||
2402 | info->flags |= DF_TEXTREL; | |
2403 | ||
b70321a2 L |
2404 | if (info->warn_shared_textrel && info->shared) |
2405 | info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"), | |
2406 | p->sec->owner, h->root.root.string, | |
2407 | p->sec); | |
2408 | ||
0c715baa | 2409 | /* Not an error, just cut short the traversal. */ |
b34976b6 | 2410 | return FALSE; |
0c715baa AM |
2411 | } |
2412 | } | |
b34976b6 | 2413 | return TRUE; |
0c715baa AM |
2414 | } |
2415 | ||
252b5132 RH |
2416 | /* Set the sizes of the dynamic sections. */ |
2417 | ||
b34976b6 | 2418 | static bfd_boolean |
55fd94b0 AM |
2419 | elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
2420 | struct bfd_link_info *info) | |
252b5132 | 2421 | { |
6725bdbf | 2422 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2423 | bfd *dynobj; |
2424 | asection *s; | |
b34976b6 | 2425 | bfd_boolean relocs; |
0c715baa | 2426 | bfd *ibfd; |
252b5132 | 2427 | |
6725bdbf | 2428 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
2429 | if (htab == NULL) |
2430 | return FALSE; | |
ebe50bae | 2431 | dynobj = htab->elf.dynobj; |
ffb2e45b AM |
2432 | if (dynobj == NULL) |
2433 | abort (); | |
252b5132 | 2434 | |
ebe50bae | 2435 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2436 | { |
2437 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 2438 | if (info->executable) |
252b5132 RH |
2439 | { |
2440 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
ffb2e45b AM |
2441 | if (s == NULL) |
2442 | abort (); | |
eea6121a | 2443 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
2444 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2445 | } | |
161d71a6 | 2446 | } |
6725bdbf | 2447 | |
0c715baa AM |
2448 | /* Set up .got offsets for local syms, and space for local dynamic |
2449 | relocs. */ | |
2450 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
161d71a6 L |
2451 | { |
2452 | bfd_signed_vma *local_got; | |
2453 | bfd_signed_vma *end_local_got; | |
13ae64f3 | 2454 | char *local_tls_type; |
67a4f2b7 | 2455 | bfd_vma *local_tlsdesc_gotent; |
161d71a6 L |
2456 | bfd_size_type locsymcount; |
2457 | Elf_Internal_Shdr *symtab_hdr; | |
2458 | asection *srel; | |
6725bdbf | 2459 | |
0ffa91dd | 2460 | if (! is_i386_elf (ibfd)) |
161d71a6 | 2461 | continue; |
6725bdbf | 2462 | |
0c715baa AM |
2463 | for (s = ibfd->sections; s != NULL; s = s->next) |
2464 | { | |
e03a8ed8 | 2465 | struct elf_dyn_relocs *p; |
0c715baa | 2466 | |
e03a8ed8 | 2467 | for (p = ((struct elf_dyn_relocs *) |
e81d3500 | 2468 | elf_section_data (s)->local_dynrel); |
ec338859 AM |
2469 | p != NULL; |
2470 | p = p->next) | |
0c715baa | 2471 | { |
ec338859 AM |
2472 | if (!bfd_is_abs_section (p->sec) |
2473 | && bfd_is_abs_section (p->sec->output_section)) | |
2474 | { | |
2475 | /* Input section has been discarded, either because | |
2476 | it is a copy of a linkonce section or due to | |
2477 | linker script /DISCARD/, so we'll be discarding | |
2478 | the relocs too. */ | |
2479 | } | |
3348747a NS |
2480 | else if (htab->is_vxworks |
2481 | && strcmp (p->sec->output_section->name, | |
2482 | ".tls_vars") == 0) | |
2483 | { | |
2484 | /* Relocations in vxworks .tls_vars sections are | |
2485 | handled specially by the loader. */ | |
2486 | } | |
248866a8 | 2487 | else if (p->count != 0) |
ec338859 AM |
2488 | { |
2489 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 2490 | srel->size += p->count * sizeof (Elf32_External_Rel); |
248866a8 | 2491 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
b70321a2 L |
2492 | { |
2493 | info->flags |= DF_TEXTREL; | |
2494 | if (info->warn_shared_textrel && info->shared) | |
2495 | info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"), | |
2496 | p->sec->owner, p->sec); | |
2497 | break; | |
2498 | } | |
ec338859 | 2499 | } |
0c715baa AM |
2500 | } |
2501 | } | |
2502 | ||
2503 | local_got = elf_local_got_refcounts (ibfd); | |
161d71a6 L |
2504 | if (!local_got) |
2505 | continue; | |
6725bdbf | 2506 | |
0ffa91dd | 2507 | symtab_hdr = &elf_symtab_hdr (ibfd); |
161d71a6 L |
2508 | locsymcount = symtab_hdr->sh_info; |
2509 | end_local_got = local_got + locsymcount; | |
13ae64f3 | 2510 | local_tls_type = elf_i386_local_got_tls_type (ibfd); |
67a4f2b7 | 2511 | local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd); |
6de2ae4a L |
2512 | s = htab->elf.sgot; |
2513 | srel = htab->elf.srelgot; | |
67a4f2b7 AO |
2514 | for (; local_got < end_local_got; |
2515 | ++local_got, ++local_tls_type, ++local_tlsdesc_gotent) | |
161d71a6 | 2516 | { |
67a4f2b7 | 2517 | *local_tlsdesc_gotent = (bfd_vma) -1; |
161d71a6 | 2518 | if (*local_got > 0) |
6725bdbf | 2519 | { |
67a4f2b7 AO |
2520 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
2521 | { | |
6de2ae4a | 2522 | *local_tlsdesc_gotent = htab->elf.sgotplt->size |
67a4f2b7 | 2523 | - elf_i386_compute_jump_table_size (htab); |
6de2ae4a | 2524 | htab->elf.sgotplt->size += 8; |
67a4f2b7 AO |
2525 | *local_got = (bfd_vma) -2; |
2526 | } | |
2527 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2528 | || GOT_TLS_GD_P (*local_tls_type)) | |
2529 | { | |
2530 | *local_got = s->size; | |
2531 | s->size += 4; | |
2532 | if (GOT_TLS_GD_P (*local_tls_type) | |
2533 | || *local_tls_type == GOT_TLS_IE_BOTH) | |
2534 | s->size += 4; | |
2535 | } | |
13ae64f3 | 2536 | if (info->shared |
67a4f2b7 | 2537 | || GOT_TLS_GD_ANY_P (*local_tls_type) |
37e55690 JJ |
2538 | || (*local_tls_type & GOT_TLS_IE)) |
2539 | { | |
2540 | if (*local_tls_type == GOT_TLS_IE_BOTH) | |
eea6121a | 2541 | srel->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2542 | else if (GOT_TLS_GD_P (*local_tls_type) |
2543 | || ! GOT_TLS_GDESC_P (*local_tls_type)) | |
eea6121a | 2544 | srel->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2545 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
6de2ae4a | 2546 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
37e55690 | 2547 | } |
6725bdbf | 2548 | } |
161d71a6 L |
2549 | else |
2550 | *local_got = (bfd_vma) -1; | |
6725bdbf | 2551 | } |
252b5132 | 2552 | } |
6725bdbf | 2553 | |
13ae64f3 JJ |
2554 | if (htab->tls_ldm_got.refcount > 0) |
2555 | { | |
2556 | /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM | |
2557 | relocs. */ | |
6de2ae4a L |
2558 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
2559 | htab->elf.sgot->size += 8; | |
2560 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2561 | } |
2562 | else | |
2563 | htab->tls_ldm_got.offset = -1; | |
2564 | ||
0c715baa AM |
2565 | /* Allocate global sym .plt and .got entries, and space for global |
2566 | sym dynamic relocs. */ | |
eb4ff4d6 | 2567 | elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info); |
252b5132 | 2568 | |
c25bc9fc L |
2569 | /* Allocate .plt and .got entries, and space for local symbols. */ |
2570 | htab_traverse (htab->loc_hash_table, | |
2571 | elf_i386_allocate_local_dynrelocs, | |
2572 | info); | |
2573 | ||
67a4f2b7 AO |
2574 | /* For every jump slot reserved in the sgotplt, reloc_count is |
2575 | incremented. However, when we reserve space for TLS descriptors, | |
2576 | it's not incremented, so in order to compute the space reserved | |
2577 | for them, it suffices to multiply the reloc count by the jump | |
2578 | slot size. */ | |
6de2ae4a | 2579 | if (htab->elf.srelplt) |
5ae0bfb6 | 2580 | htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4; |
67a4f2b7 | 2581 | |
a7b16ceb L |
2582 | if (htab->elf.sgotplt) |
2583 | { | |
e28df02b L |
2584 | struct elf_link_hash_entry *got; |
2585 | got = elf_link_hash_lookup (elf_hash_table (info), | |
2586 | "_GLOBAL_OFFSET_TABLE_", | |
2587 | FALSE, FALSE, FALSE); | |
2588 | ||
a7b16ceb | 2589 | /* Don't allocate .got.plt section if there are no GOT nor PLT |
e28df02b L |
2590 | entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */ |
2591 | if ((got == NULL | |
2592 | || !got->ref_regular_nonweak) | |
2593 | && (htab->elf.sgotplt->size | |
2594 | == get_elf_backend_data (output_bfd)->got_header_size) | |
a7b16ceb L |
2595 | && (htab->elf.splt == NULL |
2596 | || htab->elf.splt->size == 0) | |
2597 | && (htab->elf.sgot == NULL | |
2598 | || htab->elf.sgot->size == 0) | |
2599 | && (htab->elf.iplt == NULL | |
2600 | || htab->elf.iplt->size == 0) | |
2601 | && (htab->elf.igotplt == NULL | |
2602 | || htab->elf.igotplt->size == 0)) | |
2603 | htab->elf.sgotplt->size = 0; | |
2604 | } | |
2605 | ||
5a15f56f AM |
2606 | /* We now have determined the sizes of the various dynamic sections. |
2607 | Allocate memory for them. */ | |
b34976b6 | 2608 | relocs = FALSE; |
252b5132 RH |
2609 | for (s = dynobj->sections; s != NULL; s = s->next) |
2610 | { | |
eac338cf PB |
2611 | bfd_boolean strip_section = TRUE; |
2612 | ||
252b5132 RH |
2613 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
2614 | continue; | |
2615 | ||
6de2ae4a L |
2616 | if (s == htab->elf.splt |
2617 | || s == htab->elf.sgot | |
2618 | || s == htab->elf.sgotplt | |
2619 | || s == htab->elf.iplt | |
2620 | || s == htab->elf.igotplt | |
75ff4589 | 2621 | || s == htab->sdynbss) |
252b5132 | 2622 | { |
6725bdbf AM |
2623 | /* Strip this section if we don't need it; see the |
2624 | comment below. */ | |
eac338cf PB |
2625 | /* We'd like to strip these sections if they aren't needed, but if |
2626 | we've exported dynamic symbols from them we must leave them. | |
2627 | It's too late to tell BFD to get rid of the symbols. */ | |
2628 | ||
7325306f | 2629 | if (htab->elf.hplt != NULL) |
eac338cf | 2630 | strip_section = FALSE; |
252b5132 | 2631 | } |
0112cd26 | 2632 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel")) |
252b5132 | 2633 | { |
6de2ae4a L |
2634 | if (s->size != 0 |
2635 | && s != htab->elf.srelplt | |
2636 | && s != htab->srelplt2) | |
b34976b6 | 2637 | relocs = TRUE; |
252b5132 | 2638 | |
0ac8d2ca AM |
2639 | /* We use the reloc_count field as a counter if we need |
2640 | to copy relocs into the output file. */ | |
5ae0bfb6 | 2641 | s->reloc_count = 0; |
252b5132 | 2642 | } |
6725bdbf | 2643 | else |
252b5132 RH |
2644 | { |
2645 | /* It's not one of our sections, so don't allocate space. */ | |
2646 | continue; | |
2647 | } | |
2648 | ||
c456f082 | 2649 | if (s->size == 0) |
252b5132 | 2650 | { |
0ac8d2ca AM |
2651 | /* If we don't need this section, strip it from the |
2652 | output file. This is mostly to handle .rel.bss and | |
2653 | .rel.plt. We must create both sections in | |
2654 | create_dynamic_sections, because they must be created | |
2655 | before the linker maps input sections to output | |
2656 | sections. The linker does that before | |
2657 | adjust_dynamic_symbol is called, and it is that | |
2658 | function which decides whether anything needs to go | |
2659 | into these sections. */ | |
c456f082 AM |
2660 | if (strip_section) |
2661 | s->flags |= SEC_EXCLUDE; | |
252b5132 RH |
2662 | continue; |
2663 | } | |
2664 | ||
c456f082 AM |
2665 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2666 | continue; | |
2667 | ||
f69da49f AM |
2668 | /* Allocate memory for the section contents. We use bfd_zalloc |
2669 | here in case unused entries are not reclaimed before the | |
2670 | section's contents are written out. This should not happen, | |
2671 | but this way if it does, we get a R_386_NONE reloc instead | |
2672 | of garbage. */ | |
a50b1753 | 2673 | s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size); |
6725bdbf | 2674 | if (s->contents == NULL) |
b34976b6 | 2675 | return FALSE; |
252b5132 RH |
2676 | } |
2677 | ||
ebe50bae | 2678 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2679 | { |
2680 | /* Add some entries to the .dynamic section. We fill in the | |
2681 | values later, in elf_i386_finish_dynamic_sections, but we | |
2682 | must add the entries now so that we get the correct size for | |
2683 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2684 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2685 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2686 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2687 | |
36af4a4e | 2688 | if (info->executable) |
252b5132 | 2689 | { |
dc810e39 | 2690 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2691 | return FALSE; |
252b5132 RH |
2692 | } |
2693 | ||
6de2ae4a | 2694 | if (htab->elf.splt->size != 0) |
252b5132 | 2695 | { |
dc810e39 AM |
2696 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2697 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2698 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
2699 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2700 | return FALSE; |
252b5132 RH |
2701 | } |
2702 | ||
2703 | if (relocs) | |
2704 | { | |
dc810e39 AM |
2705 | if (!add_dynamic_entry (DT_REL, 0) |
2706 | || !add_dynamic_entry (DT_RELSZ, 0) | |
2707 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 2708 | return FALSE; |
252b5132 | 2709 | |
0c715baa AM |
2710 | /* If any dynamic relocs apply to a read-only section, |
2711 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 2712 | if ((info->flags & DF_TEXTREL) == 0) |
eb4ff4d6 L |
2713 | elf_link_hash_traverse (&htab->elf, |
2714 | elf_i386_readonly_dynrelocs, info); | |
0c715baa AM |
2715 | |
2716 | if ((info->flags & DF_TEXTREL) != 0) | |
2717 | { | |
2718 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2719 | return FALSE; |
0c715baa | 2720 | } |
252b5132 | 2721 | } |
7a2b07ff NS |
2722 | if (htab->is_vxworks |
2723 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) | |
2724 | return FALSE; | |
252b5132 | 2725 | } |
dc810e39 | 2726 | #undef add_dynamic_entry |
252b5132 | 2727 | |
b34976b6 | 2728 | return TRUE; |
252b5132 RH |
2729 | } |
2730 | ||
67a4f2b7 AO |
2731 | static bfd_boolean |
2732 | elf_i386_always_size_sections (bfd *output_bfd, | |
2733 | struct bfd_link_info *info) | |
2734 | { | |
2735 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
2736 | ||
2737 | if (tls_sec) | |
2738 | { | |
2739 | struct elf_link_hash_entry *tlsbase; | |
2740 | ||
2741 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
2742 | "_TLS_MODULE_BASE_", | |
2743 | FALSE, FALSE, FALSE); | |
2744 | ||
2745 | if (tlsbase && tlsbase->type == STT_TLS) | |
2746 | { | |
4dfe6ac6 | 2747 | struct elf_i386_link_hash_table *htab; |
67a4f2b7 AO |
2748 | struct bfd_link_hash_entry *bh = NULL; |
2749 | const struct elf_backend_data *bed | |
2750 | = get_elf_backend_data (output_bfd); | |
2751 | ||
4dfe6ac6 NC |
2752 | htab = elf_i386_hash_table (info); |
2753 | if (htab == NULL) | |
2754 | return FALSE; | |
2755 | ||
67a4f2b7 AO |
2756 | if (!(_bfd_generic_link_add_one_symbol |
2757 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
2758 | tls_sec, 0, NULL, FALSE, | |
2759 | bed->collect, &bh))) | |
2760 | return FALSE; | |
9f03412a | 2761 | |
4dfe6ac6 | 2762 | htab->tls_module_base = bh; |
9f03412a | 2763 | |
67a4f2b7 AO |
2764 | tlsbase = (struct elf_link_hash_entry *)bh; |
2765 | tlsbase->def_regular = 1; | |
2766 | tlsbase->other = STV_HIDDEN; | |
2767 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
2768 | } | |
2769 | } | |
2770 | ||
2771 | return TRUE; | |
2772 | } | |
2773 | ||
38701953 AM |
2774 | /* Set the correct type for an x86 ELF section. We do this by the |
2775 | section name, which is a hack, but ought to work. */ | |
2776 | ||
b34976b6 | 2777 | static bfd_boolean |
55fd94b0 AM |
2778 | elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
2779 | Elf_Internal_Shdr *hdr, | |
2780 | asection *sec) | |
38701953 | 2781 | { |
91d6fa6a | 2782 | const char *name; |
38701953 AM |
2783 | |
2784 | name = bfd_get_section_name (abfd, sec); | |
2785 | ||
2786 | /* This is an ugly, but unfortunately necessary hack that is | |
2787 | needed when producing EFI binaries on x86. It tells | |
2788 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
2789 | containing ELF relocation info. We need this hack in order to | |
2790 | be able to generate ELF binaries that can be translated into | |
2791 | EFI applications (which are essentially COFF objects). Those | |
2792 | files contain a COFF ".reloc" section inside an ELFNN object, | |
2793 | which would normally cause BFD to segfault because it would | |
2794 | attempt to interpret this section as containing relocation | |
2795 | entries for section "oc". With this hack enabled, ".reloc" | |
2796 | will be treated as a normal data section, which will avoid the | |
2797 | segfault. However, you won't be able to create an ELFNN binary | |
2798 | with a section named "oc" that needs relocations, but that's | |
2799 | the kind of ugly side-effects you get when detecting section | |
2800 | types based on their names... In practice, this limitation is | |
2801 | unlikely to bite. */ | |
2802 | if (strcmp (name, ".reloc") == 0) | |
2803 | hdr->sh_type = SHT_PROGBITS; | |
2804 | ||
b34976b6 | 2805 | return TRUE; |
38701953 AM |
2806 | } |
2807 | ||
9f03412a AO |
2808 | /* _TLS_MODULE_BASE_ needs to be treated especially when linking |
2809 | executables. Rather than setting it to the beginning of the TLS | |
2810 | section, we have to set it to the end. This function may be called | |
2811 | multiple times, it is idempotent. */ | |
2812 | ||
2813 | static void | |
eb4ff4d6 | 2814 | elf_i386_set_tls_module_base (struct bfd_link_info *info) |
9f03412a | 2815 | { |
4dfe6ac6 | 2816 | struct elf_i386_link_hash_table *htab; |
9f03412a AO |
2817 | struct bfd_link_hash_entry *base; |
2818 | ||
2819 | if (!info->executable) | |
2820 | return; | |
2821 | ||
4dfe6ac6 NC |
2822 | htab = elf_i386_hash_table (info); |
2823 | if (htab == NULL) | |
2824 | return; | |
9f03412a | 2825 | |
4dfe6ac6 NC |
2826 | base = htab->tls_module_base; |
2827 | if (base == NULL) | |
9f03412a AO |
2828 | return; |
2829 | ||
4dfe6ac6 | 2830 | base->u.def.value = htab->elf.tls_size; |
9f03412a AO |
2831 | } |
2832 | ||
13ae64f3 JJ |
2833 | /* Return the base VMA address which should be subtracted from real addresses |
2834 | when resolving @dtpoff relocation. | |
2835 | This is PT_TLS segment p_vaddr. */ | |
2836 | ||
2837 | static bfd_vma | |
eb4ff4d6 | 2838 | elf_i386_dtpoff_base (struct bfd_link_info *info) |
13ae64f3 | 2839 | { |
e1918d23 AM |
2840 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2841 | if (elf_hash_table (info)->tls_sec == NULL) | |
6a30718d | 2842 | return 0; |
e1918d23 | 2843 | return elf_hash_table (info)->tls_sec->vma; |
13ae64f3 JJ |
2844 | } |
2845 | ||
2846 | /* Return the relocation value for @tpoff relocation | |
2847 | if STT_TLS virtual address is ADDRESS. */ | |
2848 | ||
2849 | static bfd_vma | |
eb4ff4d6 | 2850 | elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address) |
13ae64f3 | 2851 | { |
e1918d23 | 2852 | struct elf_link_hash_table *htab = elf_hash_table (info); |
7dc98aea RO |
2853 | const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd); |
2854 | bfd_vma static_tls_size; | |
13ae64f3 | 2855 | |
e1918d23 AM |
2856 | /* If tls_sec is NULL, we should have signalled an error already. */ |
2857 | if (htab->tls_sec == NULL) | |
6a30718d | 2858 | return 0; |
7dc98aea RO |
2859 | |
2860 | /* Consider special static TLS alignment requirements. */ | |
2861 | static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment); | |
2862 | return static_tls_size + htab->tls_sec->vma - address; | |
13ae64f3 JJ |
2863 | } |
2864 | ||
252b5132 RH |
2865 | /* Relocate an i386 ELF section. */ |
2866 | ||
b34976b6 | 2867 | static bfd_boolean |
55fd94b0 AM |
2868 | elf_i386_relocate_section (bfd *output_bfd, |
2869 | struct bfd_link_info *info, | |
2870 | bfd *input_bfd, | |
2871 | asection *input_section, | |
2872 | bfd_byte *contents, | |
2873 | Elf_Internal_Rela *relocs, | |
2874 | Elf_Internal_Sym *local_syms, | |
2875 | asection **local_sections) | |
252b5132 | 2876 | { |
6725bdbf | 2877 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2878 | Elf_Internal_Shdr *symtab_hdr; |
2879 | struct elf_link_hash_entry **sym_hashes; | |
2880 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 2881 | bfd_vma *local_tlsdesc_gotents; |
252b5132 RH |
2882 | Elf_Internal_Rela *rel; |
2883 | Elf_Internal_Rela *relend; | |
3348747a | 2884 | bfd_boolean is_vxworks_tls; |
252b5132 | 2885 | |
0ffa91dd | 2886 | BFD_ASSERT (is_i386_elf (input_bfd)); |
6bbec505 | 2887 | |
6725bdbf | 2888 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
2889 | if (htab == NULL) |
2890 | return FALSE; | |
0ffa91dd | 2891 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
252b5132 RH |
2892 | sym_hashes = elf_sym_hashes (input_bfd); |
2893 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
67a4f2b7 | 2894 | local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd); |
3348747a NS |
2895 | /* We have to handle relocations in vxworks .tls_vars sections |
2896 | specially, because the dynamic loader is 'weird'. */ | |
2897 | is_vxworks_tls = (htab->is_vxworks && info->shared | |
2898 | && !strcmp (input_section->output_section->name, | |
2899 | ".tls_vars")); | |
252b5132 | 2900 | |
eb4ff4d6 | 2901 | elf_i386_set_tls_module_base (info); |
9f03412a | 2902 | |
252b5132 RH |
2903 | rel = relocs; |
2904 | relend = relocs + input_section->reloc_count; | |
2905 | for (; rel < relend; rel++) | |
2906 | { | |
13ae64f3 | 2907 | unsigned int r_type; |
252b5132 RH |
2908 | reloc_howto_type *howto; |
2909 | unsigned long r_symndx; | |
2910 | struct elf_link_hash_entry *h; | |
2911 | Elf_Internal_Sym *sym; | |
2912 | asection *sec; | |
67a4f2b7 | 2913 | bfd_vma off, offplt; |
252b5132 | 2914 | bfd_vma relocation; |
b34976b6 | 2915 | bfd_boolean unresolved_reloc; |
252b5132 | 2916 | bfd_reloc_status_type r; |
1b452ec6 | 2917 | unsigned int indx; |
13ae64f3 | 2918 | int tls_type; |
252b5132 RH |
2919 | |
2920 | r_type = ELF32_R_TYPE (rel->r_info); | |
55fd94b0 AM |
2921 | if (r_type == R_386_GNU_VTINHERIT |
2922 | || r_type == R_386_GNU_VTENTRY) | |
252b5132 | 2923 | continue; |
dc47f327 | 2924 | |
55fd94b0 | 2925 | if ((indx = r_type) >= R_386_standard |
13ae64f3 JJ |
2926 | && ((indx = r_type - R_386_ext_offset) - R_386_standard |
2927 | >= R_386_ext - R_386_standard) | |
2928 | && ((indx = r_type - R_386_tls_offset) - R_386_ext | |
cbe950e9 | 2929 | >= R_386_irelative - R_386_ext)) |
252b5132 | 2930 | { |
6ba842b6 | 2931 | (*_bfd_error_handler) |
d003868e AM |
2932 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), |
2933 | input_bfd, input_section, r_type); | |
252b5132 | 2934 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 2935 | return FALSE; |
252b5132 | 2936 | } |
1b452ec6 | 2937 | howto = elf_howto_table + indx; |
252b5132 RH |
2938 | |
2939 | r_symndx = ELF32_R_SYM (rel->r_info); | |
252b5132 RH |
2940 | h = NULL; |
2941 | sym = NULL; | |
2942 | sec = NULL; | |
b34976b6 | 2943 | unresolved_reloc = FALSE; |
252b5132 RH |
2944 | if (r_symndx < symtab_hdr->sh_info) |
2945 | { | |
2946 | sym = local_syms + r_symndx; | |
2947 | sec = local_sections[r_symndx]; | |
2948 | relocation = (sec->output_section->vma | |
2949 | + sec->output_offset | |
2950 | + sym->st_value); | |
ab96bf03 AM |
2951 | |
2952 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
2953 | && ((sec->flags & SEC_MERGE) != 0 | |
2954 | || (info->relocatable | |
2955 | && sec->output_offset != 0))) | |
f8df10f4 | 2956 | { |
f8df10f4 | 2957 | bfd_vma addend; |
4a335f3d | 2958 | bfd_byte *where = contents + rel->r_offset; |
f8df10f4 | 2959 | |
4a335f3d | 2960 | switch (howto->size) |
f8df10f4 | 2961 | { |
4a335f3d AM |
2962 | case 0: |
2963 | addend = bfd_get_8 (input_bfd, where); | |
2964 | if (howto->pc_relative) | |
2965 | { | |
2966 | addend = (addend ^ 0x80) - 0x80; | |
2967 | addend += 1; | |
2968 | } | |
2969 | break; | |
2970 | case 1: | |
2971 | addend = bfd_get_16 (input_bfd, where); | |
2972 | if (howto->pc_relative) | |
2973 | { | |
2974 | addend = (addend ^ 0x8000) - 0x8000; | |
2975 | addend += 2; | |
2976 | } | |
2977 | break; | |
2978 | case 2: | |
2979 | addend = bfd_get_32 (input_bfd, where); | |
2980 | if (howto->pc_relative) | |
2981 | { | |
2982 | addend = (addend ^ 0x80000000) - 0x80000000; | |
2983 | addend += 4; | |
2984 | } | |
2985 | break; | |
2986 | default: | |
2987 | abort (); | |
f8df10f4 JJ |
2988 | } |
2989 | ||
ab96bf03 AM |
2990 | if (info->relocatable) |
2991 | addend += sec->output_offset; | |
2992 | else | |
2993 | { | |
2994 | asection *msec = sec; | |
2995 | addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, | |
2996 | addend); | |
2997 | addend -= relocation; | |
2998 | addend += msec->output_section->vma + msec->output_offset; | |
2999 | } | |
4a335f3d AM |
3000 | |
3001 | switch (howto->size) | |
3002 | { | |
3003 | case 0: | |
16a10388 | 3004 | /* FIXME: overflow checks. */ |
4a335f3d AM |
3005 | if (howto->pc_relative) |
3006 | addend -= 1; | |
3007 | bfd_put_8 (input_bfd, addend, where); | |
4a335f3d AM |
3008 | break; |
3009 | case 1: | |
3010 | if (howto->pc_relative) | |
3011 | addend -= 2; | |
3012 | bfd_put_16 (input_bfd, addend, where); | |
4a335f3d AM |
3013 | break; |
3014 | case 2: | |
3015 | if (howto->pc_relative) | |
3016 | addend -= 4; | |
3017 | bfd_put_32 (input_bfd, addend, where); | |
3018 | break; | |
3019 | } | |
f8df10f4 | 3020 | } |
1f85278f L |
3021 | else if (!info->relocatable |
3022 | && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
c25bc9fc L |
3023 | { |
3024 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
9fff0c39 L |
3025 | h = elf_i386_get_local_sym_hash (htab, input_bfd, rel, |
3026 | FALSE); | |
c25bc9fc L |
3027 | if (h == NULL) |
3028 | abort (); | |
3029 | ||
3030 | /* Set STT_GNU_IFUNC symbol value. */ | |
3031 | h->root.u.def.value = sym->st_value; | |
3032 | h->root.u.def.section = sec; | |
3033 | } | |
252b5132 RH |
3034 | } |
3035 | else | |
3036 | { | |
3d540e93 | 3037 | bfd_boolean warned ATTRIBUTE_UNUSED; |
ffb2e45b | 3038 | |
b2a8e766 AM |
3039 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3040 | r_symndx, symtab_hdr, sym_hashes, | |
3041 | h, sec, relocation, | |
3042 | unresolved_reloc, warned); | |
252b5132 RH |
3043 | } |
3044 | ||
ab96bf03 | 3045 | if (sec != NULL && elf_discarded_section (sec)) |
0672748a L |
3046 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
3047 | rel, relend, howto, contents); | |
9635fe29 | 3048 | |
ab96bf03 AM |
3049 | if (info->relocatable) |
3050 | continue; | |
3051 | ||
cbe950e9 L |
3052 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
3053 | it here if it is defined in a non-shared object. */ | |
3054 | if (h != NULL | |
3055 | && h->type == STT_GNU_IFUNC | |
3056 | && h->def_regular) | |
3057 | { | |
3058 | asection *plt, *gotplt, *base_got; | |
3059 | bfd_vma plt_index; | |
4c544807 | 3060 | const char *name; |
cbe950e9 L |
3061 | |
3062 | if ((input_section->flags & SEC_ALLOC) == 0 | |
3063 | || h->plt.offset == (bfd_vma) -1) | |
3064 | abort (); | |
3065 | ||
3066 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
6de2ae4a | 3067 | if (htab->elf.splt != NULL) |
cbe950e9 | 3068 | { |
6de2ae4a L |
3069 | plt = htab->elf.splt; |
3070 | gotplt = htab->elf.sgotplt; | |
cbe950e9 L |
3071 | } |
3072 | else | |
3073 | { | |
6de2ae4a L |
3074 | plt = htab->elf.iplt; |
3075 | gotplt = htab->elf.igotplt; | |
cbe950e9 L |
3076 | } |
3077 | ||
3078 | relocation = (plt->output_section->vma | |
3079 | + plt->output_offset + h->plt.offset); | |
3080 | ||
3081 | switch (r_type) | |
3082 | { | |
3083 | default: | |
4c544807 L |
3084 | if (h->root.root.string) |
3085 | name = h->root.root.string; | |
3086 | else | |
3087 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
3088 | NULL); | |
cbe950e9 L |
3089 | (*_bfd_error_handler) |
3090 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
3091 | "symbol `%s' isn't handled by %s"), input_bfd, | |
3092 | elf_howto_table[r_type].name, | |
4c544807 | 3093 | name, __FUNCTION__); |
cbe950e9 L |
3094 | bfd_set_error (bfd_error_bad_value); |
3095 | return FALSE; | |
3096 | ||
3097 | case R_386_32: | |
710ab287 L |
3098 | /* Generate dynamic relcoation only when there is a |
3099 | non-GOF reference in a shared object. */ | |
3100 | if (info->shared && h->non_got_ref) | |
3101 | { | |
3102 | Elf_Internal_Rela outrel; | |
3103 | bfd_byte *loc; | |
3104 | asection *sreloc; | |
3105 | bfd_vma offset; | |
3106 | ||
c25bc9fc L |
3107 | /* Need a dynamic relocation to get the real function |
3108 | adddress. */ | |
710ab287 L |
3109 | offset = _bfd_elf_section_offset (output_bfd, |
3110 | info, | |
3111 | input_section, | |
3112 | rel->r_offset); | |
3113 | if (offset == (bfd_vma) -1 | |
3114 | || offset == (bfd_vma) -2) | |
3115 | abort (); | |
3116 | ||
3117 | outrel.r_offset = (input_section->output_section->vma | |
3118 | + input_section->output_offset | |
3119 | + offset); | |
3120 | ||
3121 | if (h->dynindx == -1 | |
44c4ea11 L |
3122 | || h->forced_local |
3123 | || info->executable) | |
710ab287 L |
3124 | { |
3125 | /* This symbol is resolved locally. */ | |
3126 | outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE); | |
3127 | bfd_put_32 (output_bfd, | |
3128 | (h->root.u.def.value | |
3129 | + h->root.u.def.section->output_section->vma | |
3130 | + h->root.u.def.section->output_offset), | |
3131 | contents + offset); | |
3132 | } | |
3133 | else | |
3134 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
3135 | ||
6de2ae4a | 3136 | sreloc = htab->elf.irelifunc; |
710ab287 L |
3137 | loc = sreloc->contents; |
3138 | loc += (sreloc->reloc_count++ | |
3139 | * sizeof (Elf32_External_Rel)); | |
3140 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
3141 | ||
3142 | /* If this reloc is against an external symbol, we | |
3143 | do not want to fiddle with the addend. Otherwise, | |
3144 | we need to include the symbol value so that it | |
3145 | becomes an addend for the dynamic reloc. For an | |
3146 | internal symbol, we have updated addend. */ | |
3147 | continue; | |
3148 | } | |
d59a60e9 | 3149 | /* FALLTHROUGH */ |
cbe950e9 L |
3150 | case R_386_PC32: |
3151 | case R_386_PLT32: | |
3152 | goto do_relocation; | |
3153 | ||
3154 | case R_386_GOT32: | |
6de2ae4a | 3155 | base_got = htab->elf.sgot; |
cbe950e9 L |
3156 | off = h->got.offset; |
3157 | ||
7afd84dc | 3158 | if (base_got == NULL) |
cbe950e9 L |
3159 | abort (); |
3160 | ||
7afd84dc | 3161 | if (off == (bfd_vma) -1) |
cbe950e9 | 3162 | { |
7afd84dc L |
3163 | /* We can't use h->got.offset here to save state, or |
3164 | even just remember the offset, as finish_dynamic_symbol | |
3165 | would use that as offset into .got. */ | |
6bbec505 | 3166 | |
6de2ae4a | 3167 | if (htab->elf.splt != NULL) |
7afd84dc L |
3168 | { |
3169 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
3170 | off = (plt_index + 3) * 4; | |
6de2ae4a | 3171 | base_got = htab->elf.sgotplt; |
7afd84dc | 3172 | } |
cbe950e9 L |
3173 | else |
3174 | { | |
7afd84dc L |
3175 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; |
3176 | off = plt_index * 4; | |
6de2ae4a | 3177 | base_got = htab->elf.igotplt; |
7afd84dc L |
3178 | } |
3179 | ||
3180 | if (h->dynindx == -1 | |
3181 | || h->forced_local | |
3182 | || info->symbolic) | |
3183 | { | |
3184 | /* This references the local defitionion. We must | |
3185 | initialize this entry in the global offset table. | |
3186 | Since the offset must always be a multiple of 8, | |
3187 | we use the least significant bit to record | |
3188 | whether we have initialized it already. | |
3189 | ||
3190 | When doing a dynamic link, we create a .rela.got | |
3191 | relocation entry to initialize the value. This | |
3192 | is done in the finish_dynamic_symbol routine. */ | |
3193 | if ((off & 1) != 0) | |
3194 | off &= ~1; | |
3195 | else | |
3196 | { | |
3197 | bfd_put_32 (output_bfd, relocation, | |
3198 | base_got->contents + off); | |
3199 | h->got.offset |= 1; | |
3200 | } | |
cbe950e9 | 3201 | } |
cbe950e9 | 3202 | |
7afd84dc | 3203 | relocation = off; |
cbe950e9 | 3204 | |
7afd84dc | 3205 | /* Adjust for static executables. */ |
6de2ae4a | 3206 | if (htab->elf.splt == NULL) |
7afd84dc L |
3207 | relocation += gotplt->output_offset; |
3208 | } | |
3209 | else | |
0018b0a3 L |
3210 | { |
3211 | relocation = (base_got->output_section->vma | |
3212 | + base_got->output_offset + off | |
3213 | - gotplt->output_section->vma | |
3214 | - gotplt->output_offset); | |
3215 | /* Adjust for static executables. */ | |
6de2ae4a | 3216 | if (htab->elf.splt == NULL) |
0018b0a3 L |
3217 | relocation += gotplt->output_offset; |
3218 | } | |
3219 | ||
cbe950e9 L |
3220 | goto do_relocation; |
3221 | ||
3222 | case R_386_GOTOFF: | |
3223 | relocation -= (gotplt->output_section->vma | |
3224 | + gotplt->output_offset); | |
3225 | goto do_relocation; | |
3226 | } | |
3227 | } | |
3228 | ||
252b5132 RH |
3229 | switch (r_type) |
3230 | { | |
3231 | case R_386_GOT32: | |
3232 | /* Relocation is to the entry for this symbol in the global | |
3233 | offset table. */ | |
6de2ae4a | 3234 | if (htab->elf.sgot == NULL) |
ffb2e45b | 3235 | abort (); |
252b5132 RH |
3236 | |
3237 | if (h != NULL) | |
3238 | { | |
b34976b6 | 3239 | bfd_boolean dyn; |
252b5132 RH |
3240 | |
3241 | off = h->got.offset; | |
ebe50bae | 3242 | dyn = htab->elf.dynamic_sections_created; |
26e41594 | 3243 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
252b5132 | 3244 | || (info->shared |
586119b3 | 3245 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
ef5aade5 L |
3246 | || (ELF_ST_VISIBILITY (h->other) |
3247 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
3248 | { |
3249 | /* This is actually a static link, or it is a | |
3250 | -Bsymbolic link and the symbol is defined | |
3251 | locally, or the symbol was forced to be local | |
3252 | because of a version file. We must initialize | |
3253 | this entry in the global offset table. Since the | |
3254 | offset must always be a multiple of 4, we use the | |
3255 | least significant bit to record whether we have | |
3256 | initialized it already. | |
3257 | ||
3258 | When doing a dynamic link, we create a .rel.got | |
3259 | relocation entry to initialize the value. This | |
3260 | is done in the finish_dynamic_symbol routine. */ | |
3261 | if ((off & 1) != 0) | |
3262 | off &= ~1; | |
3263 | else | |
3264 | { | |
3265 | bfd_put_32 (output_bfd, relocation, | |
6de2ae4a | 3266 | htab->elf.sgot->contents + off); |
252b5132 RH |
3267 | h->got.offset |= 1; |
3268 | } | |
3269 | } | |
8c694914 | 3270 | else |
b34976b6 | 3271 | unresolved_reloc = FALSE; |
252b5132 RH |
3272 | } |
3273 | else | |
3274 | { | |
ffb2e45b AM |
3275 | if (local_got_offsets == NULL) |
3276 | abort (); | |
252b5132 RH |
3277 | |
3278 | off = local_got_offsets[r_symndx]; | |
3279 | ||
3280 | /* The offset must always be a multiple of 4. We use | |
83be169b AM |
3281 | the least significant bit to record whether we have |
3282 | already generated the necessary reloc. */ | |
252b5132 RH |
3283 | if ((off & 1) != 0) |
3284 | off &= ~1; | |
3285 | else | |
3286 | { | |
6725bdbf | 3287 | bfd_put_32 (output_bfd, relocation, |
6de2ae4a | 3288 | htab->elf.sgot->contents + off); |
252b5132 RH |
3289 | |
3290 | if (info->shared) | |
3291 | { | |
947216bf AM |
3292 | asection *s; |
3293 | Elf_Internal_Rela outrel; | |
3294 | bfd_byte *loc; | |
252b5132 | 3295 | |
6de2ae4a | 3296 | s = htab->elf.srelgot; |
947216bf | 3297 | if (s == NULL) |
ffb2e45b | 3298 | abort (); |
252b5132 | 3299 | |
6de2ae4a L |
3300 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3301 | + htab->elf.sgot->output_offset | |
252b5132 RH |
3302 | + off); |
3303 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
947216bf AM |
3304 | loc = s->contents; |
3305 | loc += s->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 3306 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
3307 | } |
3308 | ||
3309 | local_got_offsets[r_symndx] |= 1; | |
3310 | } | |
252b5132 RH |
3311 | } |
3312 | ||
ffb2e45b AM |
3313 | if (off >= (bfd_vma) -2) |
3314 | abort (); | |
3315 | ||
6de2ae4a L |
3316 | relocation = htab->elf.sgot->output_section->vma |
3317 | + htab->elf.sgot->output_offset + off | |
3318 | - htab->elf.sgotplt->output_section->vma | |
3319 | - htab->elf.sgotplt->output_offset; | |
252b5132 RH |
3320 | break; |
3321 | ||
3322 | case R_386_GOTOFF: | |
3323 | /* Relocation is relative to the start of the global offset | |
3324 | table. */ | |
3325 | ||
90f487df L |
3326 | /* Check to make sure it isn't a protected function symbol |
3327 | for shared library since it may not be local when used | |
41bed6dd L |
3328 | as function address. We also need to make sure that a |
3329 | symbol is defined locally. */ | |
3330 | if (info->shared && h) | |
90f487df | 3331 | { |
41bed6dd L |
3332 | if (!h->def_regular) |
3333 | { | |
3334 | const char *v; | |
3335 | ||
3336 | switch (ELF_ST_VISIBILITY (h->other)) | |
3337 | { | |
3338 | case STV_HIDDEN: | |
3339 | v = _("hidden symbol"); | |
3340 | break; | |
3341 | case STV_INTERNAL: | |
3342 | v = _("internal symbol"); | |
3343 | break; | |
3344 | case STV_PROTECTED: | |
3345 | v = _("protected symbol"); | |
3346 | break; | |
3347 | default: | |
3348 | v = _("symbol"); | |
3349 | break; | |
3350 | } | |
3351 | ||
3352 | (*_bfd_error_handler) | |
3353 | (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"), | |
3354 | input_bfd, v, h->root.root.string); | |
3355 | bfd_set_error (bfd_error_bad_value); | |
3356 | return FALSE; | |
3357 | } | |
3358 | else if (!info->executable | |
3359 | && h->type == STT_FUNC | |
3360 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
3361 | { | |
3362 | (*_bfd_error_handler) | |
3363 | (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"), | |
3364 | input_bfd, h->root.root.string); | |
3365 | bfd_set_error (bfd_error_bad_value); | |
3366 | return FALSE; | |
3367 | } | |
90f487df L |
3368 | } |
3369 | ||
8c37241b JJ |
3370 | /* Note that sgot is not involved in this |
3371 | calculation. We always want the start of .got.plt. If we | |
3372 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
252b5132 RH |
3373 | permitted by the ABI, we might have to change this |
3374 | calculation. */ | |
6de2ae4a L |
3375 | relocation -= htab->elf.sgotplt->output_section->vma |
3376 | + htab->elf.sgotplt->output_offset; | |
252b5132 RH |
3377 | break; |
3378 | ||
3379 | case R_386_GOTPC: | |
3380 | /* Use global offset table as symbol value. */ | |
6de2ae4a L |
3381 | relocation = htab->elf.sgotplt->output_section->vma |
3382 | + htab->elf.sgotplt->output_offset; | |
b34976b6 | 3383 | unresolved_reloc = FALSE; |
252b5132 RH |
3384 | break; |
3385 | ||
3386 | case R_386_PLT32: | |
3387 | /* Relocation is to the entry for this symbol in the | |
3388 | procedure linkage table. */ | |
3389 | ||
dd5724d5 | 3390 | /* Resolve a PLT32 reloc against a local symbol directly, |
83be169b | 3391 | without using the procedure linkage table. */ |
252b5132 RH |
3392 | if (h == NULL) |
3393 | break; | |
3394 | ||
dd5724d5 | 3395 | if (h->plt.offset == (bfd_vma) -1 |
6de2ae4a | 3396 | || htab->elf.splt == NULL) |
252b5132 RH |
3397 | { |
3398 | /* We didn't make a PLT entry for this symbol. This | |
83be169b AM |
3399 | happens when statically linking PIC code, or when |
3400 | using -Bsymbolic. */ | |
252b5132 RH |
3401 | break; |
3402 | } | |
3403 | ||
6de2ae4a L |
3404 | relocation = (htab->elf.splt->output_section->vma |
3405 | + htab->elf.splt->output_offset | |
252b5132 | 3406 | + h->plt.offset); |
b34976b6 | 3407 | unresolved_reloc = FALSE; |
252b5132 RH |
3408 | break; |
3409 | ||
3410 | case R_386_32: | |
3411 | case R_386_PC32: | |
3348747a NS |
3412 | if ((input_section->flags & SEC_ALLOC) == 0 |
3413 | || is_vxworks_tls) | |
ec338859 AM |
3414 | break; |
3415 | ||
12d0ee4a | 3416 | if ((info->shared |
ef5aade5 L |
3417 | && (h == NULL |
3418 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3419 | || h->root.type != bfd_link_hash_undefweak) | |
12d0ee4a | 3420 | && (r_type != R_386_PC32 |
f6c52c13 | 3421 | || !SYMBOL_CALLS_LOCAL (info, h))) |
a23b6845 AM |
3422 | || (ELIMINATE_COPY_RELOCS |
3423 | && !info->shared | |
12d0ee4a AM |
3424 | && h != NULL |
3425 | && h->dynindx != -1 | |
f5385ebf AM |
3426 | && !h->non_got_ref |
3427 | && ((h->def_dynamic | |
3428 | && !h->def_regular) | |
28d0b90e | 3429 | || h->root.type == bfd_link_hash_undefweak |
0f88be7a | 3430 | || h->root.type == bfd_link_hash_undefined))) |
252b5132 | 3431 | { |
947216bf AM |
3432 | Elf_Internal_Rela outrel; |
3433 | bfd_byte *loc; | |
b34976b6 | 3434 | bfd_boolean skip, relocate; |
0c715baa | 3435 | asection *sreloc; |
252b5132 RH |
3436 | |
3437 | /* When generating a shared object, these relocations | |
3438 | are copied into the output file to be resolved at run | |
3439 | time. */ | |
3440 | ||
b34976b6 AM |
3441 | skip = FALSE; |
3442 | relocate = FALSE; | |
252b5132 | 3443 | |
c629eae0 JJ |
3444 | outrel.r_offset = |
3445 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
3446 | rel->r_offset); | |
3447 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 3448 | skip = TRUE; |
0bb2d96a | 3449 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3450 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
3451 | outrel.r_offset += (input_section->output_section->vma |
3452 | + input_section->output_offset); | |
3453 | ||
3454 | if (skip) | |
0bb2d96a | 3455 | memset (&outrel, 0, sizeof outrel); |
5a15f56f AM |
3456 | else if (h != NULL |
3457 | && h->dynindx != -1 | |
3458 | && (r_type == R_386_PC32 | |
3459 | || !info->shared | |
55255dae | 3460 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 3461 | || !h->def_regular)) |
0bb2d96a | 3462 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
3463 | else |
3464 | { | |
5a15f56f | 3465 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 3466 | relocate = TRUE; |
5a15f56f | 3467 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
252b5132 RH |
3468 | } |
3469 | ||
cbe950e9 | 3470 | sreloc = elf_section_data (input_section)->sreloc; |
e7c33416 | 3471 | |
62d78908 L |
3472 | if (sreloc == NULL || sreloc->contents == NULL) |
3473 | { | |
3474 | r = bfd_reloc_notsupported; | |
3475 | goto check_relocation_error; | |
3476 | } | |
0c715baa | 3477 | |
947216bf AM |
3478 | loc = sreloc->contents; |
3479 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
e7c33416 | 3480 | |
0c715baa | 3481 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
252b5132 RH |
3482 | |
3483 | /* If this reloc is against an external symbol, we do | |
3484 | not want to fiddle with the addend. Otherwise, we | |
3485 | need to include the symbol value so that it becomes | |
3486 | an addend for the dynamic reloc. */ | |
0f88be7a | 3487 | if (! relocate) |
252b5132 RH |
3488 | continue; |
3489 | } | |
252b5132 RH |
3490 | break; |
3491 | ||
37e55690 | 3492 | case R_386_TLS_IE: |
1d85728f | 3493 | if (!info->executable) |
37e55690 | 3494 | { |
947216bf AM |
3495 | Elf_Internal_Rela outrel; |
3496 | bfd_byte *loc; | |
37e55690 | 3497 | asection *sreloc; |
37e55690 JJ |
3498 | |
3499 | outrel.r_offset = rel->r_offset | |
3500 | + input_section->output_section->vma | |
3501 | + input_section->output_offset; | |
3502 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
3503 | sreloc = elf_section_data (input_section)->sreloc; | |
3504 | if (sreloc == NULL) | |
3505 | abort (); | |
947216bf AM |
3506 | loc = sreloc->contents; |
3507 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
3508 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3509 | } | |
3510 | /* Fall through */ | |
3511 | ||
13ae64f3 | 3512 | case R_386_TLS_GD: |
67a4f2b7 AO |
3513 | case R_386_TLS_GOTDESC: |
3514 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 3515 | case R_386_TLS_IE_32: |
37e55690 | 3516 | case R_386_TLS_GOTIE: |
13ae64f3 JJ |
3517 | tls_type = GOT_UNKNOWN; |
3518 | if (h == NULL && local_got_offsets) | |
3519 | tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx]; | |
3520 | else if (h != NULL) | |
142411ca | 3521 | tls_type = elf_i386_hash_entry(h)->tls_type; |
37e55690 JJ |
3522 | if (tls_type == GOT_TLS_IE) |
3523 | tls_type = GOT_TLS_IE_NEG; | |
142411ca L |
3524 | |
3525 | if (! elf_i386_tls_transition (info, input_bfd, | |
3526 | input_section, contents, | |
3527 | symtab_hdr, sym_hashes, | |
3528 | &r_type, tls_type, rel, | |
4c544807 | 3529 | relend, h, r_symndx)) |
142411ca | 3530 | return FALSE; |
13ae64f3 JJ |
3531 | |
3532 | if (r_type == R_386_TLS_LE_32) | |
3533 | { | |
82e51918 | 3534 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
3535 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
3536 | { | |
142411ca | 3537 | unsigned int type; |
13ae64f3 JJ |
3538 | bfd_vma roff; |
3539 | ||
3540 | /* GD->LE transition. */ | |
13ae64f3 | 3541 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
3542 | if (type == 0x04) |
3543 | { | |
3544 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
3545 | Change it into: | |
3546 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
3547 | (6 byte form of subl). */ | |
13ae64f3 JJ |
3548 | memcpy (contents + rel->r_offset - 3, |
3549 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
142411ca | 3550 | roff = rel->r_offset + 5; |
13ae64f3 JJ |
3551 | } |
3552 | else | |
3553 | { | |
142411ca L |
3554 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop |
3555 | Change it into: | |
3556 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
3557 | (6 byte form of subl). */ | |
3558 | memcpy (contents + rel->r_offset - 2, | |
3559 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
3560 | roff = rel->r_offset + 6; | |
13ae64f3 | 3561 | } |
eb4ff4d6 | 3562 | bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation), |
13ae64f3 | 3563 | contents + roff); |
a3fadc9a | 3564 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
3565 | rel++; |
3566 | continue; | |
3567 | } | |
67a4f2b7 AO |
3568 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
3569 | { | |
3570 | /* GDesc -> LE transition. | |
3571 | It's originally something like: | |
3572 | leal x@tlsdesc(%ebx), %eax | |
3573 | ||
3574 | leal x@ntpoff, %eax | |
3575 | ||
3576 | Registers other than %eax may be set up here. */ | |
3577 | ||
142411ca | 3578 | unsigned int val; |
67a4f2b7 AO |
3579 | bfd_vma roff; |
3580 | ||
67a4f2b7 | 3581 | roff = rel->r_offset; |
67a4f2b7 | 3582 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
3583 | |
3584 | /* Now modify the instruction as appropriate. */ | |
3585 | /* aoliva FIXME: remove the above and xor the byte | |
3586 | below with 0x86. */ | |
3587 | bfd_put_8 (output_bfd, val ^ 0x86, | |
3588 | contents + roff - 1); | |
eb4ff4d6 | 3589 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
67a4f2b7 AO |
3590 | contents + roff); |
3591 | continue; | |
3592 | } | |
3593 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
3594 | { | |
3595 | /* GDesc -> LE transition. | |
3596 | It's originally: | |
3597 | call *(%eax) | |
3598 | Turn it into: | |
142411ca | 3599 | xchg %ax,%ax */ |
67a4f2b7 | 3600 | |
67a4f2b7 | 3601 | bfd_vma roff; |
6bbec505 | 3602 | |
67a4f2b7 | 3603 | roff = rel->r_offset; |
10efb593 | 3604 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
3605 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3606 | continue; | |
3607 | } | |
37e55690 | 3608 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE) |
13ae64f3 | 3609 | { |
142411ca | 3610 | unsigned int val; |
13ae64f3 JJ |
3611 | |
3612 | /* IE->LE transition: | |
37e55690 JJ |
3613 | Originally it can be one of: |
3614 | movl foo, %eax | |
3615 | movl foo, %reg | |
3616 | addl foo, %reg | |
3617 | We change it into: | |
3618 | movl $foo, %eax | |
3619 | movl $foo, %reg | |
3620 | addl $foo, %reg. */ | |
37e55690 | 3621 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
37e55690 JJ |
3622 | if (val == 0xa1) |
3623 | { | |
3624 | /* movl foo, %eax. */ | |
55fd94b0 AM |
3625 | bfd_put_8 (output_bfd, 0xb8, |
3626 | contents + rel->r_offset - 1); | |
37e55690 | 3627 | } |
299bf759 | 3628 | else |
37e55690 | 3629 | { |
142411ca L |
3630 | unsigned int type; |
3631 | ||
55fd94b0 AM |
3632 | type = bfd_get_8 (input_bfd, |
3633 | contents + rel->r_offset - 2); | |
299bf759 | 3634 | switch (type) |
26e41594 | 3635 | { |
299bf759 L |
3636 | case 0x8b: |
3637 | /* movl */ | |
299bf759 L |
3638 | bfd_put_8 (output_bfd, 0xc7, |
3639 | contents + rel->r_offset - 2); | |
3640 | bfd_put_8 (output_bfd, | |
3641 | 0xc0 | ((val >> 3) & 7), | |
3642 | contents + rel->r_offset - 1); | |
3643 | break; | |
3644 | case 0x03: | |
3645 | /* addl */ | |
299bf759 L |
3646 | bfd_put_8 (output_bfd, 0x81, |
3647 | contents + rel->r_offset - 2); | |
3648 | bfd_put_8 (output_bfd, | |
3649 | 0xc0 | ((val >> 3) & 7), | |
3650 | contents + rel->r_offset - 1); | |
3651 | break; | |
3652 | default: | |
3653 | BFD_FAIL (); | |
3654 | break; | |
26e41594 | 3655 | } |
37e55690 | 3656 | } |
eb4ff4d6 | 3657 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
37e55690 JJ |
3658 | contents + rel->r_offset); |
3659 | continue; | |
3660 | } | |
3661 | else | |
3662 | { | |
3663 | unsigned int val, type; | |
3664 | ||
3665 | /* {IE_32,GOTIE}->LE transition: | |
3666 | Originally it can be one of: | |
13ae64f3 | 3667 | subl foo(%reg1), %reg2 |
13ae64f3 | 3668 | movl foo(%reg1), %reg2 |
37e55690 | 3669 | addl foo(%reg1), %reg2 |
13ae64f3 JJ |
3670 | We change it into: |
3671 | subl $foo, %reg2 | |
37e55690 JJ |
3672 | movl $foo, %reg2 (6 byte form) |
3673 | addl $foo, %reg2. */ | |
13ae64f3 JJ |
3674 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
3675 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
13ae64f3 JJ |
3676 | if (type == 0x8b) |
3677 | { | |
3678 | /* movl */ | |
13ae64f3 JJ |
3679 | bfd_put_8 (output_bfd, 0xc7, |
3680 | contents + rel->r_offset - 2); | |
3681 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3682 | contents + rel->r_offset - 1); | |
3683 | } | |
3684 | else if (type == 0x2b) | |
3685 | { | |
3686 | /* subl */ | |
13ae64f3 JJ |
3687 | bfd_put_8 (output_bfd, 0x81, |
3688 | contents + rel->r_offset - 2); | |
3689 | bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), | |
3690 | contents + rel->r_offset - 1); | |
3691 | } | |
37e55690 JJ |
3692 | else if (type == 0x03) |
3693 | { | |
3694 | /* addl */ | |
3695 | bfd_put_8 (output_bfd, 0x81, | |
3696 | contents + rel->r_offset - 2); | |
3697 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3698 | contents + rel->r_offset - 1); | |
3699 | } | |
13ae64f3 JJ |
3700 | else |
3701 | BFD_FAIL (); | |
37e55690 | 3702 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE) |
eb4ff4d6 | 3703 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
37e55690 JJ |
3704 | contents + rel->r_offset); |
3705 | else | |
eb4ff4d6 | 3706 | bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation), |
37e55690 | 3707 | contents + rel->r_offset); |
13ae64f3 JJ |
3708 | continue; |
3709 | } | |
3710 | } | |
3711 | ||
6de2ae4a | 3712 | if (htab->elf.sgot == NULL) |
13ae64f3 JJ |
3713 | abort (); |
3714 | ||
3715 | if (h != NULL) | |
67a4f2b7 AO |
3716 | { |
3717 | off = h->got.offset; | |
3718 | offplt = elf_i386_hash_entry (h)->tlsdesc_got; | |
3719 | } | |
13ae64f3 JJ |
3720 | else |
3721 | { | |
3722 | if (local_got_offsets == NULL) | |
3723 | abort (); | |
3724 | ||
3725 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3726 | offplt = local_tlsdesc_gotents[r_symndx]; |
13ae64f3 JJ |
3727 | } |
3728 | ||
3729 | if ((off & 1) != 0) | |
3730 | off &= ~1; | |
26e41594 | 3731 | else |
13ae64f3 | 3732 | { |
947216bf AM |
3733 | Elf_Internal_Rela outrel; |
3734 | bfd_byte *loc; | |
91d6fa6a | 3735 | int dr_type; |
67a4f2b7 | 3736 | asection *sreloc; |
13ae64f3 | 3737 | |
6de2ae4a | 3738 | if (htab->elf.srelgot == NULL) |
13ae64f3 JJ |
3739 | abort (); |
3740 | ||
67a4f2b7 AO |
3741 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
3742 | ||
3743 | if (GOT_TLS_GDESC_P (tls_type)) | |
3744 | { | |
3745 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC); | |
3746 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8 | |
6de2ae4a L |
3747 | <= htab->elf.sgotplt->size); |
3748 | outrel.r_offset = (htab->elf.sgotplt->output_section->vma | |
3749 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3750 | + offplt |
3751 | + htab->sgotplt_jump_table_size); | |
6de2ae4a | 3752 | sreloc = htab->elf.srelplt; |
67a4f2b7 | 3753 | loc = sreloc->contents; |
5ae0bfb6 RS |
3754 | loc += (htab->next_tls_desc_index++ |
3755 | * sizeof (Elf32_External_Rel)); | |
67a4f2b7 AO |
3756 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) |
3757 | <= sreloc->contents + sreloc->size); | |
3758 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); | |
3759 | if (indx == 0) | |
3760 | { | |
3761 | BFD_ASSERT (! unresolved_reloc); | |
3762 | bfd_put_32 (output_bfd, | |
eb4ff4d6 | 3763 | relocation - elf_i386_dtpoff_base (info), |
6de2ae4a | 3764 | htab->elf.sgotplt->contents + offplt |
67a4f2b7 AO |
3765 | + htab->sgotplt_jump_table_size + 4); |
3766 | } | |
3767 | else | |
3768 | { | |
3769 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 3770 | htab->elf.sgotplt->contents + offplt |
67a4f2b7 AO |
3771 | + htab->sgotplt_jump_table_size + 4); |
3772 | } | |
3773 | } | |
3774 | ||
6de2ae4a | 3775 | sreloc = htab->elf.srelgot; |
67a4f2b7 | 3776 | |
6de2ae4a L |
3777 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3778 | + htab->elf.sgot->output_offset + off); | |
13ae64f3 | 3779 | |
67a4f2b7 | 3780 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 | 3781 | dr_type = R_386_TLS_DTPMOD32; |
67a4f2b7 AO |
3782 | else if (GOT_TLS_GDESC_P (tls_type)) |
3783 | goto dr_done; | |
37e55690 JJ |
3784 | else if (tls_type == GOT_TLS_IE_POS) |
3785 | dr_type = R_386_TLS_TPOFF; | |
13ae64f3 JJ |
3786 | else |
3787 | dr_type = R_386_TLS_TPOFF32; | |
67a4f2b7 | 3788 | |
37e55690 | 3789 | if (dr_type == R_386_TLS_TPOFF && indx == 0) |
eb4ff4d6 L |
3790 | bfd_put_32 (output_bfd, |
3791 | relocation - elf_i386_dtpoff_base (info), | |
6de2ae4a | 3792 | htab->elf.sgot->contents + off); |
37e55690 | 3793 | else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) |
eb4ff4d6 L |
3794 | bfd_put_32 (output_bfd, |
3795 | elf_i386_dtpoff_base (info) - relocation, | |
6de2ae4a | 3796 | htab->elf.sgot->contents + off); |
67a4f2b7 | 3797 | else if (dr_type != R_386_TLS_DESC) |
c366c25e | 3798 | bfd_put_32 (output_bfd, 0, |
6de2ae4a | 3799 | htab->elf.sgot->contents + off); |
13ae64f3 | 3800 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
67a4f2b7 AO |
3801 | |
3802 | loc = sreloc->contents; | |
3803 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
3804 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) | |
3805 | <= sreloc->contents + sreloc->size); | |
13ae64f3 JJ |
3806 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3807 | ||
67a4f2b7 | 3808 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 JJ |
3809 | { |
3810 | if (indx == 0) | |
3811 | { | |
82e51918 | 3812 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 | 3813 | bfd_put_32 (output_bfd, |
eb4ff4d6 | 3814 | relocation - elf_i386_dtpoff_base (info), |
6de2ae4a | 3815 | htab->elf.sgot->contents + off + 4); |
13ae64f3 JJ |
3816 | } |
3817 | else | |
3818 | { | |
3819 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 3820 | htab->elf.sgot->contents + off + 4); |
13ae64f3 JJ |
3821 | outrel.r_info = ELF32_R_INFO (indx, |
3822 | R_386_TLS_DTPOFF32); | |
3823 | outrel.r_offset += 4; | |
67a4f2b7 | 3824 | sreloc->reloc_count++; |
947216bf | 3825 | loc += sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
3826 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) |
3827 | <= sreloc->contents + sreloc->size); | |
947216bf | 3828 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
13ae64f3 JJ |
3829 | } |
3830 | } | |
37e55690 JJ |
3831 | else if (tls_type == GOT_TLS_IE_BOTH) |
3832 | { | |
3833 | bfd_put_32 (output_bfd, | |
eb4ff4d6 L |
3834 | (indx == 0 |
3835 | ? relocation - elf_i386_dtpoff_base (info) | |
3836 | : 0), | |
6de2ae4a | 3837 | htab->elf.sgot->contents + off + 4); |
37e55690 JJ |
3838 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); |
3839 | outrel.r_offset += 4; | |
67a4f2b7 | 3840 | sreloc->reloc_count++; |
947216bf | 3841 | loc += sizeof (Elf32_External_Rel); |
37e55690 JJ |
3842 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3843 | } | |
13ae64f3 | 3844 | |
67a4f2b7 | 3845 | dr_done: |
13ae64f3 JJ |
3846 | if (h != NULL) |
3847 | h->got.offset |= 1; | |
3848 | else | |
3849 | local_got_offsets[r_symndx] |= 1; | |
3850 | } | |
3851 | ||
67a4f2b7 AO |
3852 | if (off >= (bfd_vma) -2 |
3853 | && ! GOT_TLS_GDESC_P (tls_type)) | |
13ae64f3 | 3854 | abort (); |
67a4f2b7 AO |
3855 | if (r_type == R_386_TLS_GOTDESC |
3856 | || r_type == R_386_TLS_DESC_CALL) | |
3857 | { | |
3858 | relocation = htab->sgotplt_jump_table_size + offplt; | |
3859 | unresolved_reloc = FALSE; | |
3860 | } | |
3861 | else if (r_type == ELF32_R_TYPE (rel->r_info)) | |
13ae64f3 | 3862 | { |
6de2ae4a L |
3863 | bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma |
3864 | + htab->elf.sgotplt->output_offset; | |
3865 | relocation = htab->elf.sgot->output_section->vma | |
3866 | + htab->elf.sgot->output_offset + off - g_o_t; | |
37e55690 JJ |
3867 | if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) |
3868 | && tls_type == GOT_TLS_IE_BOTH) | |
3869 | relocation += 4; | |
3870 | if (r_type == R_386_TLS_IE) | |
8c37241b | 3871 | relocation += g_o_t; |
b34976b6 | 3872 | unresolved_reloc = FALSE; |
13ae64f3 | 3873 | } |
67a4f2b7 | 3874 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
13ae64f3 JJ |
3875 | { |
3876 | unsigned int val, type; | |
3877 | bfd_vma roff; | |
3878 | ||
3879 | /* GD->IE transition. */ | |
13ae64f3 | 3880 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
3881 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
3882 | if (type == 0x04) | |
3883 | { | |
3884 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
3885 | Change it into: | |
3886 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 | 3887 | val >>= 3; |
142411ca | 3888 | roff = rel->r_offset - 3; |
13ae64f3 JJ |
3889 | } |
3890 | else | |
3891 | { | |
3892 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
3893 | Change it into: | |
3894 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 JJ |
3895 | roff = rel->r_offset - 2; |
3896 | } | |
3897 | memcpy (contents + roff, | |
3898 | "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); | |
3899 | contents[roff + 7] = 0x80 | (val & 7); | |
37e55690 JJ |
3900 | /* If foo is used only with foo@gotntpoff(%reg) and |
3901 | foo@indntpoff, but not with foo@gottpoff(%reg), change | |
3902 | subl $foo@gottpoff(%reg), %eax | |
3903 | into: | |
3904 | addl $foo@gotntpoff(%reg), %eax. */ | |
ebcfb3c0 JJ |
3905 | if (tls_type == GOT_TLS_IE_POS) |
3906 | contents[roff + 6] = 0x03; | |
8c37241b | 3907 | bfd_put_32 (output_bfd, |
6de2ae4a L |
3908 | htab->elf.sgot->output_section->vma |
3909 | + htab->elf.sgot->output_offset + off | |
3910 | - htab->elf.sgotplt->output_section->vma | |
3911 | - htab->elf.sgotplt->output_offset, | |
13ae64f3 JJ |
3912 | contents + roff + 8); |
3913 | /* Skip R_386_PLT32. */ | |
3914 | rel++; | |
3915 | continue; | |
3916 | } | |
67a4f2b7 AO |
3917 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
3918 | { | |
3919 | /* GDesc -> IE transition. | |
3920 | It's originally something like: | |
3921 | leal x@tlsdesc(%ebx), %eax | |
3922 | ||
3923 | Change it to: | |
142411ca | 3924 | movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax |
67a4f2b7 AO |
3925 | or: |
3926 | movl x@gottpoff(%ebx), %eax # before negl %eax | |
3927 | ||
3928 | Registers other than %eax may be set up here. */ | |
3929 | ||
67a4f2b7 AO |
3930 | bfd_vma roff; |
3931 | ||
3932 | /* First, make sure it's a leal adding ebx to a 32-bit | |
3933 | offset into any register, although it's probably | |
3934 | almost always going to be eax. */ | |
3935 | roff = rel->r_offset; | |
67a4f2b7 AO |
3936 | |
3937 | /* Now modify the instruction as appropriate. */ | |
3938 | /* To turn a leal into a movl in the form we use it, it | |
3939 | suffices to change the first byte from 0x8d to 0x8b. | |
3940 | aoliva FIXME: should we decide to keep the leal, all | |
3941 | we have to do is remove the statement below, and | |
3942 | adjust the relaxation of R_386_TLS_DESC_CALL. */ | |
3943 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
3944 | ||
3945 | if (tls_type == GOT_TLS_IE_BOTH) | |
3946 | off += 4; | |
3947 | ||
3948 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
3949 | htab->elf.sgot->output_section->vma |
3950 | + htab->elf.sgot->output_offset + off | |
3951 | - htab->elf.sgotplt->output_section->vma | |
3952 | - htab->elf.sgotplt->output_offset, | |
67a4f2b7 AO |
3953 | contents + roff); |
3954 | continue; | |
3955 | } | |
3956 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
3957 | { | |
3958 | /* GDesc -> IE transition. | |
3959 | It's originally: | |
3960 | call *(%eax) | |
3961 | ||
3962 | Change it to: | |
142411ca | 3963 | xchg %ax,%ax |
67a4f2b7 AO |
3964 | or |
3965 | negl %eax | |
3966 | depending on how we transformed the TLS_GOTDESC above. | |
3967 | */ | |
3968 | ||
67a4f2b7 AO |
3969 | bfd_vma roff; |
3970 | ||
67a4f2b7 | 3971 | roff = rel->r_offset; |
67a4f2b7 AO |
3972 | |
3973 | /* Now modify the instruction as appropriate. */ | |
3974 | if (tls_type != GOT_TLS_IE_NEG) | |
3975 | { | |
10efb593 L |
3976 | /* xchg %ax,%ax */ |
3977 | bfd_put_8 (output_bfd, 0x66, contents + roff); | |
67a4f2b7 AO |
3978 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3979 | } | |
3980 | else | |
3981 | { | |
3982 | /* negl %eax */ | |
3983 | bfd_put_8 (output_bfd, 0xf7, contents + roff); | |
3984 | bfd_put_8 (output_bfd, 0xd8, contents + roff + 1); | |
3985 | } | |
3986 | ||
3987 | continue; | |
3988 | } | |
3989 | else | |
3990 | BFD_ASSERT (FALSE); | |
13ae64f3 JJ |
3991 | break; |
3992 | ||
3993 | case R_386_TLS_LDM: | |
142411ca L |
3994 | if (! elf_i386_tls_transition (info, input_bfd, |
3995 | input_section, contents, | |
3996 | symtab_hdr, sym_hashes, | |
3997 | &r_type, GOT_UNKNOWN, rel, | |
4c544807 | 3998 | relend, h, r_symndx)) |
142411ca | 3999 | return FALSE; |
13ae64f3 | 4000 | |
142411ca L |
4001 | if (r_type != R_386_TLS_LDM) |
4002 | { | |
13ae64f3 | 4003 | /* LD->LE transition: |
13ae64f3 JJ |
4004 | leal foo(%reg), %eax; call ___tls_get_addr. |
4005 | We change it into: | |
4006 | movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */ | |
142411ca | 4007 | BFD_ASSERT (r_type == R_386_TLS_LE_32); |
13ae64f3 JJ |
4008 | memcpy (contents + rel->r_offset - 2, |
4009 | "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); | |
a3fadc9a | 4010 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
4011 | rel++; |
4012 | continue; | |
4013 | } | |
4014 | ||
6de2ae4a | 4015 | if (htab->elf.sgot == NULL) |
13ae64f3 JJ |
4016 | abort (); |
4017 | ||
4018 | off = htab->tls_ldm_got.offset; | |
4019 | if (off & 1) | |
4020 | off &= ~1; | |
4021 | else | |
4022 | { | |
947216bf AM |
4023 | Elf_Internal_Rela outrel; |
4024 | bfd_byte *loc; | |
13ae64f3 | 4025 | |
6de2ae4a | 4026 | if (htab->elf.srelgot == NULL) |
13ae64f3 JJ |
4027 | abort (); |
4028 | ||
6de2ae4a L |
4029 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
4030 | + htab->elf.sgot->output_offset + off); | |
13ae64f3 JJ |
4031 | |
4032 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 4033 | htab->elf.sgot->contents + off); |
13ae64f3 | 4034 | bfd_put_32 (output_bfd, 0, |
6de2ae4a | 4035 | htab->elf.sgot->contents + off + 4); |
13ae64f3 | 4036 | outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); |
6de2ae4a L |
4037 | loc = htab->elf.srelgot->contents; |
4038 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
4039 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
4040 | htab->tls_ldm_got.offset |= 1; | |
4041 | } | |
6de2ae4a L |
4042 | relocation = htab->elf.sgot->output_section->vma |
4043 | + htab->elf.sgot->output_offset + off | |
4044 | - htab->elf.sgotplt->output_section->vma | |
4045 | - htab->elf.sgotplt->output_offset; | |
b34976b6 | 4046 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
4047 | break; |
4048 | ||
4049 | case R_386_TLS_LDO_32: | |
959b0961 | 4050 | if (!info->executable || (input_section->flags & SEC_CODE) == 0) |
eb4ff4d6 | 4051 | relocation -= elf_i386_dtpoff_base (info); |
13ae64f3 JJ |
4052 | else |
4053 | /* When converting LDO to LE, we must negate. */ | |
eb4ff4d6 | 4054 | relocation = -elf_i386_tpoff (info, relocation); |
13ae64f3 JJ |
4055 | break; |
4056 | ||
4057 | case R_386_TLS_LE_32: | |
13ae64f3 | 4058 | case R_386_TLS_LE: |
1d85728f | 4059 | if (!info->executable) |
37e55690 | 4060 | { |
947216bf | 4061 | Elf_Internal_Rela outrel; |
37e55690 | 4062 | asection *sreloc; |
947216bf | 4063 | bfd_byte *loc; |
37e55690 JJ |
4064 | |
4065 | outrel.r_offset = rel->r_offset | |
4066 | + input_section->output_section->vma | |
4067 | + input_section->output_offset; | |
4068 | if (h != NULL && h->dynindx != -1) | |
4069 | indx = h->dynindx; | |
4070 | else | |
4071 | indx = 0; | |
4072 | if (r_type == R_386_TLS_LE_32) | |
4073 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); | |
4074 | else | |
4075 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
4076 | sreloc = elf_section_data (input_section)->sreloc; | |
4077 | if (sreloc == NULL) | |
4078 | abort (); | |
947216bf AM |
4079 | loc = sreloc->contents; |
4080 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); | |
37e55690 JJ |
4081 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
4082 | if (indx) | |
4083 | continue; | |
4084 | else if (r_type == R_386_TLS_LE_32) | |
eb4ff4d6 | 4085 | relocation = elf_i386_dtpoff_base (info) - relocation; |
37e55690 | 4086 | else |
eb4ff4d6 | 4087 | relocation -= elf_i386_dtpoff_base (info); |
37e55690 JJ |
4088 | } |
4089 | else if (r_type == R_386_TLS_LE_32) | |
eb4ff4d6 | 4090 | relocation = elf_i386_tpoff (info, relocation); |
37e55690 | 4091 | else |
eb4ff4d6 | 4092 | relocation = -elf_i386_tpoff (info, relocation); |
13ae64f3 JJ |
4093 | break; |
4094 | ||
252b5132 RH |
4095 | default: |
4096 | break; | |
4097 | } | |
4098 | ||
239e1f3a AM |
4099 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
4100 | because such sections are not SEC_ALLOC and thus ld.so will | |
4101 | not process them. */ | |
8c694914 | 4102 | if (unresolved_reloc |
239e1f3a | 4103 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 4104 | && h->def_dynamic)) |
6a30718d JJ |
4105 | { |
4106 | (*_bfd_error_handler) | |
843fe662 | 4107 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
4108 | input_bfd, |
4109 | input_section, | |
6a30718d | 4110 | (long) rel->r_offset, |
843fe662 | 4111 | howto->name, |
6a30718d | 4112 | h->root.root.string); |
b34976b6 | 4113 | return FALSE; |
6a30718d | 4114 | } |
83be169b | 4115 | |
cbe950e9 | 4116 | do_relocation: |
252b5132 RH |
4117 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
4118 | contents, rel->r_offset, | |
55fd94b0 | 4119 | relocation, 0); |
252b5132 | 4120 | |
62d78908 | 4121 | check_relocation_error: |
cf5c0c5b | 4122 | if (r != bfd_reloc_ok) |
252b5132 | 4123 | { |
cf5c0c5b | 4124 | const char *name; |
ffb2e45b | 4125 | |
cf5c0c5b AM |
4126 | if (h != NULL) |
4127 | name = h->root.root.string; | |
4128 | else | |
4129 | { | |
4130 | name = bfd_elf_string_from_elf_section (input_bfd, | |
4131 | symtab_hdr->sh_link, | |
4132 | sym->st_name); | |
4133 | if (name == NULL) | |
b34976b6 | 4134 | return FALSE; |
cf5c0c5b AM |
4135 | if (*name == '\0') |
4136 | name = bfd_section_name (input_bfd, sec); | |
4137 | } | |
ffb2e45b | 4138 | |
cf5c0c5b AM |
4139 | if (r == bfd_reloc_overflow) |
4140 | { | |
cf5c0c5b | 4141 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
4142 | (info, (h ? &h->root : NULL), name, howto->name, |
4143 | (bfd_vma) 0, input_bfd, input_section, | |
4144 | rel->r_offset))) | |
b34976b6 | 4145 | return FALSE; |
cf5c0c5b AM |
4146 | } |
4147 | else | |
4148 | { | |
4149 | (*_bfd_error_handler) | |
d003868e AM |
4150 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
4151 | input_bfd, input_section, | |
cf5c0c5b | 4152 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 4153 | return FALSE; |
cf5c0c5b | 4154 | } |
252b5132 RH |
4155 | } |
4156 | } | |
4157 | ||
b34976b6 | 4158 | return TRUE; |
252b5132 RH |
4159 | } |
4160 | ||
4161 | /* Finish up dynamic symbol handling. We set the contents of various | |
4162 | dynamic sections here. */ | |
4163 | ||
b34976b6 | 4164 | static bfd_boolean |
55fd94b0 AM |
4165 | elf_i386_finish_dynamic_symbol (bfd *output_bfd, |
4166 | struct bfd_link_info *info, | |
4167 | struct elf_link_hash_entry *h, | |
4168 | Elf_Internal_Sym *sym) | |
252b5132 | 4169 | { |
6725bdbf | 4170 | struct elf_i386_link_hash_table *htab; |
252b5132 | 4171 | |
6725bdbf | 4172 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
4173 | if (htab == NULL) |
4174 | return FALSE; | |
252b5132 RH |
4175 | |
4176 | if (h->plt.offset != (bfd_vma) -1) | |
4177 | { | |
252b5132 RH |
4178 | bfd_vma plt_index; |
4179 | bfd_vma got_offset; | |
947216bf AM |
4180 | Elf_Internal_Rela rel; |
4181 | bfd_byte *loc; | |
cbe950e9 L |
4182 | asection *plt, *gotplt, *relplt; |
4183 | ||
4184 | /* When building a static executable, use .iplt, .igot.plt and | |
4185 | .rel.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 4186 | if (htab->elf.splt != NULL) |
cbe950e9 | 4187 | { |
6de2ae4a L |
4188 | plt = htab->elf.splt; |
4189 | gotplt = htab->elf.sgotplt; | |
4190 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
4191 | } |
4192 | else | |
4193 | { | |
6de2ae4a L |
4194 | plt = htab->elf.iplt; |
4195 | gotplt = htab->elf.igotplt; | |
4196 | relplt = htab->elf.irelplt; | |
cbe950e9 | 4197 | } |
252b5132 RH |
4198 | |
4199 | /* This symbol has an entry in the procedure linkage table. Set | |
4200 | it up. */ | |
4201 | ||
cbe950e9 L |
4202 | if ((h->dynindx == -1 |
4203 | && !((h->forced_local || info->executable) | |
4204 | && h->def_regular | |
4205 | && h->type == STT_GNU_IFUNC)) | |
4206 | || plt == NULL | |
4207 | || gotplt == NULL | |
4208 | || relplt == NULL) | |
f6df62c8 | 4209 | return FALSE; |
252b5132 RH |
4210 | |
4211 | /* Get the index in the procedure linkage table which | |
4212 | corresponds to this symbol. This is the index of this symbol | |
4213 | in all the symbols for which we are making plt entries. The | |
cbe950e9 | 4214 | first entry in the procedure linkage table is reserved. |
252b5132 | 4215 | |
cbe950e9 | 4216 | Get the offset into the .got table of the entry that |
252b5132 | 4217 | corresponds to this function. Each .got entry is 4 bytes. |
cbe950e9 | 4218 | The first three are reserved. |
6bbec505 | 4219 | |
cbe950e9 L |
4220 | For static executables, we don't reserve anything. */ |
4221 | ||
6de2ae4a | 4222 | if (plt == htab->elf.splt) |
cbe950e9 L |
4223 | { |
4224 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
4225 | got_offset = (plt_index + 3) * 4; | |
4226 | } | |
4227 | else | |
4228 | { | |
4229 | plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
4230 | got_offset = plt_index * 4; | |
4231 | } | |
252b5132 RH |
4232 | |
4233 | /* Fill in the entry in the procedure linkage table. */ | |
4234 | if (! info->shared) | |
4235 | { | |
cbe950e9 | 4236 | memcpy (plt->contents + h->plt.offset, elf_i386_plt_entry, |
252b5132 RH |
4237 | PLT_ENTRY_SIZE); |
4238 | bfd_put_32 (output_bfd, | |
cbe950e9 L |
4239 | (gotplt->output_section->vma |
4240 | + gotplt->output_offset | |
252b5132 | 4241 | + got_offset), |
cbe950e9 | 4242 | plt->contents + h->plt.offset + 2); |
eac338cf PB |
4243 | |
4244 | if (htab->is_vxworks) | |
4245 | { | |
4246 | int s, k, reloc_index; | |
4247 | ||
4248 | /* Create the R_386_32 relocation referencing the GOT | |
4249 | for this PLT entry. */ | |
4250 | ||
4251 | /* S: Current slot number (zero-based). */ | |
4252 | s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE; | |
4253 | /* K: Number of relocations for PLTResolve. */ | |
4254 | if (info->shared) | |
4255 | k = PLTRESOLVE_RELOCS_SHLIB; | |
4256 | else | |
4257 | k = PLTRESOLVE_RELOCS; | |
4258 | /* Skip the PLTresolve relocations, and the relocations for | |
4259 | the other PLT slots. */ | |
4260 | reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS; | |
4261 | loc = (htab->srelplt2->contents + reloc_index | |
4262 | * sizeof (Elf32_External_Rel)); | |
4263 | ||
6de2ae4a L |
4264 | rel.r_offset = (htab->elf.splt->output_section->vma |
4265 | + htab->elf.splt->output_offset | |
eac338cf | 4266 | + h->plt.offset + 2), |
7325306f | 4267 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4268 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
4269 | ||
4270 | /* Create the R_386_32 relocation referencing the beginning of | |
4271 | the PLT for this GOT entry. */ | |
6de2ae4a L |
4272 | rel.r_offset = (htab->elf.sgotplt->output_section->vma |
4273 | + htab->elf.sgotplt->output_offset | |
eac338cf | 4274 | + got_offset); |
7325306f | 4275 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf PB |
4276 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
4277 | loc + sizeof (Elf32_External_Rel)); | |
4278 | } | |
252b5132 RH |
4279 | } |
4280 | else | |
4281 | { | |
cbe950e9 | 4282 | memcpy (plt->contents + h->plt.offset, elf_i386_pic_plt_entry, |
252b5132 RH |
4283 | PLT_ENTRY_SIZE); |
4284 | bfd_put_32 (output_bfd, got_offset, | |
cbe950e9 | 4285 | plt->contents + h->plt.offset + 2); |
252b5132 RH |
4286 | } |
4287 | ||
cbe950e9 | 4288 | /* Don't fill PLT entry for static executables. */ |
6de2ae4a | 4289 | if (plt == htab->elf.splt) |
cbe950e9 L |
4290 | { |
4291 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel), | |
4292 | plt->contents + h->plt.offset + 7); | |
4293 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), | |
4294 | plt->contents + h->plt.offset + 12); | |
4295 | } | |
252b5132 RH |
4296 | |
4297 | /* Fill in the entry in the global offset table. */ | |
4298 | bfd_put_32 (output_bfd, | |
cbe950e9 L |
4299 | (plt->output_section->vma |
4300 | + plt->output_offset | |
252b5132 RH |
4301 | + h->plt.offset |
4302 | + 6), | |
cbe950e9 | 4303 | gotplt->contents + got_offset); |
252b5132 RH |
4304 | |
4305 | /* Fill in the entry in the .rel.plt section. */ | |
cbe950e9 L |
4306 | rel.r_offset = (gotplt->output_section->vma |
4307 | + gotplt->output_offset | |
252b5132 | 4308 | + got_offset); |
cbe950e9 L |
4309 | if (h->dynindx == -1 |
4310 | || ((info->executable | |
4311 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
4312 | && h->def_regular | |
4313 | && h->type == STT_GNU_IFUNC)) | |
4314 | { | |
4315 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
4316 | R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend | |
4317 | in the .got.plt section. */ | |
4318 | bfd_put_32 (output_bfd, | |
4319 | (h->root.u.def.value | |
4320 | + h->root.u.def.section->output_section->vma | |
4321 | + h->root.u.def.section->output_offset), | |
4322 | gotplt->contents + got_offset); | |
4323 | rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE); | |
4324 | } | |
4325 | else | |
4326 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); | |
4327 | loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 4328 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 | 4329 | |
f5385ebf | 4330 | if (!h->def_regular) |
252b5132 RH |
4331 | { |
4332 | /* Mark the symbol as undefined, rather than as defined in | |
c6585bbb JJ |
4333 | the .plt section. Leave the value if there were any |
4334 | relocations where pointer equality matters (this is a clue | |
51b64d56 AM |
4335 | for the dynamic linker, to make function pointer |
4336 | comparisons work between an application and shared | |
c6585bbb JJ |
4337 | library), otherwise set it to zero. If a function is only |
4338 | called from a binary, there is no need to slow down | |
4339 | shared libraries because of that. */ | |
252b5132 | 4340 | sym->st_shndx = SHN_UNDEF; |
f5385ebf | 4341 | if (!h->pointer_equality_needed) |
c6585bbb | 4342 | sym->st_value = 0; |
252b5132 RH |
4343 | } |
4344 | } | |
4345 | ||
13ae64f3 | 4346 | if (h->got.offset != (bfd_vma) -1 |
67a4f2b7 | 4347 | && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type) |
37e55690 | 4348 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0) |
252b5132 | 4349 | { |
947216bf AM |
4350 | Elf_Internal_Rela rel; |
4351 | bfd_byte *loc; | |
252b5132 RH |
4352 | |
4353 | /* This symbol has an entry in the global offset table. Set it | |
4354 | up. */ | |
4355 | ||
6de2ae4a | 4356 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
ffb2e45b | 4357 | abort (); |
252b5132 | 4358 | |
6de2ae4a L |
4359 | rel.r_offset = (htab->elf.sgot->output_section->vma |
4360 | + htab->elf.sgot->output_offset | |
dc810e39 | 4361 | + (h->got.offset & ~(bfd_vma) 1)); |
252b5132 | 4362 | |
dd5724d5 AM |
4363 | /* If this is a static link, or it is a -Bsymbolic link and the |
4364 | symbol is defined locally or was forced to be local because | |
4365 | of a version file, we just want to emit a RELATIVE reloc. | |
252b5132 RH |
4366 | The entry in the global offset table will already have been |
4367 | initialized in the relocate_section function. */ | |
710ab287 | 4368 | if (h->def_regular |
0018b0a3 L |
4369 | && h->type == STT_GNU_IFUNC) |
4370 | { | |
710ab287 L |
4371 | if (info->shared) |
4372 | { | |
4373 | /* Generate R_386_GLOB_DAT. */ | |
4374 | goto do_glob_dat; | |
4375 | } | |
4376 | else | |
4377 | { | |
cd2b2c10 L |
4378 | asection *plt; |
4379 | ||
710ab287 L |
4380 | if (!h->pointer_equality_needed) |
4381 | abort (); | |
4382 | ||
4383 | /* For non-shared object, we can't use .got.plt, which | |
4384 | contains the real function addres if we need pointer | |
4385 | equality. We load the GOT entry with the PLT entry. */ | |
cd2b2c10 | 4386 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
710ab287 L |
4387 | bfd_put_32 (output_bfd, |
4388 | (plt->output_section->vma | |
4389 | + plt->output_offset + h->plt.offset), | |
6de2ae4a | 4390 | htab->elf.sgot->contents + h->got.offset); |
710ab287 L |
4391 | return TRUE; |
4392 | } | |
0018b0a3 L |
4393 | } |
4394 | else if (info->shared | |
4395 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
dd5724d5 | 4396 | { |
6725bdbf | 4397 | BFD_ASSERT((h->got.offset & 1) != 0); |
dd5724d5 AM |
4398 | rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
4399 | } | |
252b5132 RH |
4400 | else |
4401 | { | |
dd5724d5 | 4402 | BFD_ASSERT((h->got.offset & 1) == 0); |
710ab287 | 4403 | do_glob_dat: |
6725bdbf | 4404 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
6de2ae4a | 4405 | htab->elf.sgot->contents + h->got.offset); |
252b5132 RH |
4406 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); |
4407 | } | |
4408 | ||
6de2ae4a L |
4409 | loc = htab->elf.srelgot->contents; |
4410 | loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 4411 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
4412 | } |
4413 | ||
f5385ebf | 4414 | if (h->needs_copy) |
252b5132 | 4415 | { |
947216bf AM |
4416 | Elf_Internal_Rela rel; |
4417 | bfd_byte *loc; | |
252b5132 RH |
4418 | |
4419 | /* This symbol needs a copy reloc. Set it up. */ | |
4420 | ||
ffb2e45b AM |
4421 | if (h->dynindx == -1 |
4422 | || (h->root.type != bfd_link_hash_defined | |
4423 | && h->root.type != bfd_link_hash_defweak) | |
4424 | || htab->srelbss == NULL) | |
4425 | abort (); | |
252b5132 RH |
4426 | |
4427 | rel.r_offset = (h->root.u.def.value | |
4428 | + h->root.u.def.section->output_section->vma | |
4429 | + h->root.u.def.section->output_offset); | |
4430 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); | |
947216bf AM |
4431 | loc = htab->srelbss->contents; |
4432 | loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel); | |
0ac8d2ca | 4433 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 RH |
4434 | } |
4435 | ||
c25bc9fc L |
4436 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may |
4437 | be NULL for local symbols. | |
4438 | ||
eac338cf PB |
4439 | On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it |
4440 | is relative to the ".got" section. */ | |
c25bc9fc L |
4441 | if (sym != NULL |
4442 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
4443 | || (!htab->is_vxworks && h == htab->elf.hgot))) | |
252b5132 RH |
4444 | sym->st_shndx = SHN_ABS; |
4445 | ||
b34976b6 | 4446 | return TRUE; |
252b5132 RH |
4447 | } |
4448 | ||
c25bc9fc L |
4449 | /* Finish up local dynamic symbol handling. We set the contents of |
4450 | various dynamic sections here. */ | |
4451 | ||
4452 | static bfd_boolean | |
4453 | elf_i386_finish_local_dynamic_symbol (void **slot, void *inf) | |
4454 | { | |
4455 | struct elf_link_hash_entry *h | |
4456 | = (struct elf_link_hash_entry *) *slot; | |
4457 | struct bfd_link_info *info | |
4458 | = (struct bfd_link_info *) inf; | |
4459 | ||
4460 | return elf_i386_finish_dynamic_symbol (info->output_bfd, info, | |
4461 | h, NULL); | |
4462 | } | |
4463 | ||
38701953 AM |
4464 | /* Used to decide how to sort relocs in an optimal manner for the |
4465 | dynamic linker, before writing them out. */ | |
4466 | ||
4467 | static enum elf_reloc_type_class | |
55fd94b0 | 4468 | elf_i386_reloc_type_class (const Elf_Internal_Rela *rela) |
38701953 | 4469 | { |
55fd94b0 | 4470 | switch (ELF32_R_TYPE (rela->r_info)) |
38701953 AM |
4471 | { |
4472 | case R_386_RELATIVE: | |
4473 | return reloc_class_relative; | |
4474 | case R_386_JUMP_SLOT: | |
4475 | return reloc_class_plt; | |
4476 | case R_386_COPY: | |
4477 | return reloc_class_copy; | |
4478 | default: | |
4479 | return reloc_class_normal; | |
4480 | } | |
4481 | } | |
4482 | ||
252b5132 RH |
4483 | /* Finish up the dynamic sections. */ |
4484 | ||
b34976b6 | 4485 | static bfd_boolean |
55fd94b0 AM |
4486 | elf_i386_finish_dynamic_sections (bfd *output_bfd, |
4487 | struct bfd_link_info *info) | |
252b5132 | 4488 | { |
6725bdbf | 4489 | struct elf_i386_link_hash_table *htab; |
252b5132 | 4490 | bfd *dynobj; |
252b5132 RH |
4491 | asection *sdyn; |
4492 | ||
6725bdbf | 4493 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
4494 | if (htab == NULL) |
4495 | return FALSE; | |
4496 | ||
ebe50bae | 4497 | dynobj = htab->elf.dynobj; |
252b5132 RH |
4498 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
4499 | ||
ebe50bae | 4500 | if (htab->elf.dynamic_sections_created) |
252b5132 | 4501 | { |
252b5132 RH |
4502 | Elf32_External_Dyn *dyncon, *dynconend; |
4503 | ||
6de2ae4a | 4504 | if (sdyn == NULL || htab->elf.sgot == NULL) |
ffb2e45b | 4505 | abort (); |
252b5132 RH |
4506 | |
4507 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4508 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4509 | for (; dyncon < dynconend; dyncon++) |
4510 | { | |
4511 | Elf_Internal_Dyn dyn; | |
51b64d56 | 4512 | asection *s; |
252b5132 RH |
4513 | |
4514 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4515 | ||
4516 | switch (dyn.d_tag) | |
4517 | { | |
4518 | default: | |
7a2b07ff NS |
4519 | if (htab->is_vxworks |
4520 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
4521 | break; | |
0ac8d2ca | 4522 | continue; |
252b5132 RH |
4523 | |
4524 | case DT_PLTGOT: | |
6de2ae4a | 4525 | s = htab->elf.sgotplt; |
8c37241b | 4526 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
6725bdbf AM |
4527 | break; |
4528 | ||
252b5132 | 4529 | case DT_JMPREL: |
6de2ae4a | 4530 | s = htab->elf.srelplt; |
6348e046 | 4531 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
252b5132 RH |
4532 | break; |
4533 | ||
4534 | case DT_PLTRELSZ: | |
6de2ae4a | 4535 | s = htab->elf.srelplt; |
eea6121a | 4536 | dyn.d_un.d_val = s->size; |
252b5132 RH |
4537 | break; |
4538 | ||
4539 | case DT_RELSZ: | |
4540 | /* My reading of the SVR4 ABI indicates that the | |
4541 | procedure linkage table relocs (DT_JMPREL) should be | |
4542 | included in the overall relocs (DT_REL). This is | |
4543 | what Solaris does. However, UnixWare can not handle | |
4544 | that case. Therefore, we override the DT_RELSZ entry | |
6348e046 | 4545 | here to make it not include the JMPREL relocs. */ |
6de2ae4a | 4546 | s = htab->elf.srelplt; |
6348e046 AM |
4547 | if (s == NULL) |
4548 | continue; | |
eea6121a | 4549 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
4550 | break; |
4551 | ||
4552 | case DT_REL: | |
4553 | /* We may not be using the standard ELF linker script. | |
4554 | If .rel.plt is the first .rel section, we adjust | |
4555 | DT_REL to not include it. */ | |
6de2ae4a | 4556 | s = htab->elf.srelplt; |
6348e046 AM |
4557 | if (s == NULL) |
4558 | continue; | |
4559 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
4560 | continue; | |
eea6121a | 4561 | dyn.d_un.d_ptr += s->size; |
252b5132 RH |
4562 | break; |
4563 | } | |
0ac8d2ca AM |
4564 | |
4565 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
4566 | } |
4567 | ||
4568 | /* Fill in the first entry in the procedure linkage table. */ | |
6de2ae4a | 4569 | if (htab->elf.splt && htab->elf.splt->size > 0) |
252b5132 RH |
4570 | { |
4571 | if (info->shared) | |
eac338cf | 4572 | { |
6de2ae4a | 4573 | memcpy (htab->elf.splt->contents, elf_i386_pic_plt0_entry, |
eac338cf | 4574 | sizeof (elf_i386_pic_plt0_entry)); |
6de2ae4a | 4575 | memset (htab->elf.splt->contents + sizeof (elf_i386_pic_plt0_entry), |
eac338cf PB |
4576 | htab->plt0_pad_byte, |
4577 | PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry)); | |
4578 | } | |
252b5132 RH |
4579 | else |
4580 | { | |
6de2ae4a | 4581 | memcpy (htab->elf.splt->contents, elf_i386_plt0_entry, |
eac338cf | 4582 | sizeof(elf_i386_plt0_entry)); |
6de2ae4a | 4583 | memset (htab->elf.splt->contents + sizeof (elf_i386_plt0_entry), |
eac338cf PB |
4584 | htab->plt0_pad_byte, |
4585 | PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry)); | |
252b5132 | 4586 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4587 | (htab->elf.sgotplt->output_section->vma |
4588 | + htab->elf.sgotplt->output_offset | |
6725bdbf | 4589 | + 4), |
6de2ae4a | 4590 | htab->elf.splt->contents + 2); |
252b5132 | 4591 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4592 | (htab->elf.sgotplt->output_section->vma |
4593 | + htab->elf.sgotplt->output_offset | |
6725bdbf | 4594 | + 8), |
6de2ae4a | 4595 | htab->elf.splt->contents + 8); |
eac338cf PB |
4596 | |
4597 | if (htab->is_vxworks) | |
4598 | { | |
4599 | Elf_Internal_Rela rel; | |
7325306f | 4600 | |
eac338cf PB |
4601 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4. |
4602 | On IA32 we use REL relocations so the addend goes in | |
4603 | the PLT directly. */ | |
6de2ae4a L |
4604 | rel.r_offset = (htab->elf.splt->output_section->vma |
4605 | + htab->elf.splt->output_offset | |
eac338cf | 4606 | + 2); |
7325306f | 4607 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4608 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
4609 | htab->srelplt2->contents); | |
4610 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
6de2ae4a L |
4611 | rel.r_offset = (htab->elf.splt->output_section->vma |
4612 | + htab->elf.splt->output_offset | |
eac338cf | 4613 | + 8); |
7325306f | 4614 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4615 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
4616 | htab->srelplt2->contents + | |
4617 | sizeof (Elf32_External_Rel)); | |
4618 | } | |
252b5132 RH |
4619 | } |
4620 | ||
4621 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
4622 | really seem like the right value. */ | |
6de2ae4a | 4623 | elf_section_data (htab->elf.splt->output_section) |
6725bdbf | 4624 | ->this_hdr.sh_entsize = 4; |
eac338cf PB |
4625 | |
4626 | /* Correct the .rel.plt.unloaded relocations. */ | |
4627 | if (htab->is_vxworks && !info->shared) | |
4628 | { | |
6de2ae4a | 4629 | int num_plts = (htab->elf.splt->size / PLT_ENTRY_SIZE) - 1; |
4c9b0de6 | 4630 | unsigned char *p; |
eac338cf PB |
4631 | |
4632 | p = htab->srelplt2->contents; | |
4633 | if (info->shared) | |
4634 | p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel); | |
4635 | else | |
4636 | p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel); | |
4637 | ||
4638 | for (; num_plts; num_plts--) | |
4639 | { | |
4640 | Elf_Internal_Rela rel; | |
4641 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 4642 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4643 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
4644 | p += sizeof (Elf32_External_Rel); | |
4645 | ||
4646 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 4647 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf PB |
4648 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
4649 | p += sizeof (Elf32_External_Rel); | |
4650 | } | |
4651 | } | |
252b5132 RH |
4652 | } |
4653 | } | |
4654 | ||
6de2ae4a | 4655 | if (htab->elf.sgotplt) |
252b5132 | 4656 | { |
56d4289c L |
4657 | if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) |
4658 | { | |
4659 | (*_bfd_error_handler) | |
4660 | (_("discarded output section: `%A'"), htab->elf.sgotplt); | |
4661 | return FALSE; | |
4662 | } | |
4663 | ||
12d0ee4a | 4664 | /* Fill in the first three entries in the global offset table. */ |
6de2ae4a | 4665 | if (htab->elf.sgotplt->size > 0) |
12d0ee4a AM |
4666 | { |
4667 | bfd_put_32 (output_bfd, | |
55fd94b0 | 4668 | (sdyn == NULL ? 0 |
12d0ee4a | 4669 | : sdyn->output_section->vma + sdyn->output_offset), |
6de2ae4a L |
4670 | htab->elf.sgotplt->contents); |
4671 | bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4); | |
4672 | bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8); | |
12d0ee4a | 4673 | } |
252b5132 | 4674 | |
6de2ae4a | 4675 | elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4; |
12d0ee4a | 4676 | } |
8c37241b | 4677 | |
6de2ae4a L |
4678 | if (htab->elf.sgot && htab->elf.sgot->size > 0) |
4679 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4; | |
8c37241b | 4680 | |
c25bc9fc L |
4681 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
4682 | htab_traverse (htab->loc_hash_table, | |
4683 | elf_i386_finish_local_dynamic_symbol, | |
4684 | info); | |
4685 | ||
b34976b6 | 4686 | return TRUE; |
252b5132 RH |
4687 | } |
4688 | ||
4c45e5c9 JJ |
4689 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4690 | or (bfd_vma) -1 if it should not be included. */ | |
4691 | ||
4692 | static bfd_vma | |
4693 | elf_i386_plt_sym_val (bfd_vma i, const asection *plt, | |
4694 | const arelent *rel ATTRIBUTE_UNUSED) | |
4695 | { | |
4696 | return plt->vma + (i + 1) * PLT_ENTRY_SIZE; | |
4697 | } | |
4698 | ||
fdc90cb4 JJ |
4699 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
4700 | ||
4701 | static bfd_boolean | |
4702 | elf_i386_hash_symbol (struct elf_link_hash_entry *h) | |
4703 | { | |
4704 | if (h->plt.offset != (bfd_vma) -1 | |
4705 | && !h->def_regular | |
4706 | && !h->pointer_equality_needed) | |
4707 | return FALSE; | |
4708 | ||
4709 | return _bfd_elf_hash_symbol (h); | |
4710 | } | |
4c45e5c9 | 4711 | |
d8045f23 NC |
4712 | /* Hook called by the linker routine which adds symbols from an object |
4713 | file. */ | |
4714 | ||
4715 | static bfd_boolean | |
c16153ae | 4716 | elf_i386_add_symbol_hook (bfd * abfd, |
d8045f23 NC |
4717 | struct bfd_link_info * info ATTRIBUTE_UNUSED, |
4718 | Elf_Internal_Sym * sym, | |
4719 | const char ** namep ATTRIBUTE_UNUSED, | |
4720 | flagword * flagsp ATTRIBUTE_UNUSED, | |
4721 | asection ** secp ATTRIBUTE_UNUSED, | |
4722 | bfd_vma * valp ATTRIBUTE_UNUSED) | |
4723 | { | |
c16153ae | 4724 | if ((abfd->flags & DYNAMIC) == 0 |
f64b2e8d NC |
4725 | && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC |
4726 | || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)) | |
4727 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
d8045f23 NC |
4728 | |
4729 | return TRUE; | |
4730 | } | |
4731 | ||
252b5132 RH |
4732 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vec |
4733 | #define TARGET_LITTLE_NAME "elf32-i386" | |
4734 | #define ELF_ARCH bfd_arch_i386 | |
ae95ffa6 | 4735 | #define ELF_TARGET_ID I386_ELF_DATA |
252b5132 RH |
4736 | #define ELF_MACHINE_CODE EM_386 |
4737 | #define ELF_MAXPAGESIZE 0x1000 | |
252b5132 RH |
4738 | |
4739 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4740 | #define elf_backend_can_refcount 1 |
252b5132 RH |
4741 | #define elf_backend_want_got_plt 1 |
4742 | #define elf_backend_plt_readonly 1 | |
4743 | #define elf_backend_want_plt_sym 0 | |
4744 | #define elf_backend_got_header_size 12 | |
252b5132 | 4745 | |
8c29f035 AM |
4746 | /* Support RELA for objdump of prelink objects. */ |
4747 | #define elf_info_to_howto elf_i386_info_to_howto_rel | |
dd5724d5 AM |
4748 | #define elf_info_to_howto_rel elf_i386_info_to_howto_rel |
4749 | ||
13ae64f3 | 4750 | #define bfd_elf32_mkobject elf_i386_mkobject |
13ae64f3 | 4751 | |
dd5724d5 AM |
4752 | #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name |
4753 | #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create | |
c25bc9fc | 4754 | #define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free |
dd5724d5 | 4755 | #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup |
13285a1b | 4756 | #define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup |
dd5724d5 AM |
4757 | |
4758 | #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol | |
13285a1b | 4759 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
dd5724d5 | 4760 | #define elf_backend_check_relocs elf_i386_check_relocs |
0ac8d2ca | 4761 | #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol |
6725bdbf | 4762 | #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections |
0ac8d2ca | 4763 | #define elf_backend_fake_sections elf_i386_fake_sections |
dd5724d5 AM |
4764 | #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections |
4765 | #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol | |
4766 | #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook | |
4767 | #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook | |
c5fccbec DJ |
4768 | #define elf_backend_grok_prstatus elf_i386_grok_prstatus |
4769 | #define elf_backend_grok_psinfo elf_i386_grok_psinfo | |
db6751f2 | 4770 | #define elf_backend_reloc_type_class elf_i386_reloc_type_class |
0ac8d2ca AM |
4771 | #define elf_backend_relocate_section elf_i386_relocate_section |
4772 | #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections | |
67a4f2b7 | 4773 | #define elf_backend_always_size_sections elf_i386_always_size_sections |
74541ad4 AM |
4774 | #define elf_backend_omit_section_dynsym \ |
4775 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
4c45e5c9 | 4776 | #define elf_backend_plt_sym_val elf_i386_plt_sym_val |
fdc90cb4 | 4777 | #define elf_backend_hash_symbol elf_i386_hash_symbol |
d8045f23 NC |
4778 | #define elf_backend_add_symbol_hook elf_i386_add_symbol_hook |
4779 | #undef elf_backend_post_process_headers | |
4780 | #define elf_backend_post_process_headers _bfd_elf_set_osabi | |
dd5724d5 | 4781 | |
252b5132 | 4782 | #include "elf32-target.h" |
2bc3c89a AM |
4783 | |
4784 | /* FreeBSD support. */ | |
4785 | ||
4786 | #undef TARGET_LITTLE_SYM | |
4787 | #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec | |
4788 | #undef TARGET_LITTLE_NAME | |
4789 | #define TARGET_LITTLE_NAME "elf32-i386-freebsd" | |
d1036acb L |
4790 | #undef ELF_OSABI |
4791 | #define ELF_OSABI ELFOSABI_FREEBSD | |
2bc3c89a AM |
4792 | |
4793 | /* The kernel recognizes executables as valid only if they carry a | |
4794 | "FreeBSD" label in the ELF header. So we put this label on all | |
4795 | executables and (for simplicity) also all other object files. */ | |
4796 | ||
2bc3c89a | 4797 | static void |
d8045f23 | 4798 | elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info) |
2bc3c89a | 4799 | { |
d8045f23 | 4800 | _bfd_elf_set_osabi (abfd, info); |
2bc3c89a | 4801 | |
2bc3c89a AM |
4802 | #ifdef OLD_FREEBSD_ABI_LABEL |
4803 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
4804 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
caf47ea6 | 4805 | #endif |
2bc3c89a AM |
4806 | } |
4807 | ||
4808 | #undef elf_backend_post_process_headers | |
d8045f23 | 4809 | #define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers |
571fe01f NC |
4810 | #undef elf32_bed |
4811 | #define elf32_bed elf32_i386_fbsd_bed | |
2bc3c89a | 4812 | |
d8045f23 NC |
4813 | #undef elf_backend_add_symbol_hook |
4814 | ||
2bc3c89a | 4815 | #include "elf32-target.h" |
eac338cf | 4816 | |
a6cc6b3b RO |
4817 | /* Solaris 2. */ |
4818 | ||
4819 | #undef TARGET_LITTLE_SYM | |
4820 | #define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec | |
4821 | #undef TARGET_LITTLE_NAME | |
4822 | #define TARGET_LITTLE_NAME "elf32-i386-sol2" | |
4823 | ||
4824 | /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE | |
4825 | objects won't be recognized. */ | |
4826 | #undef ELF_OSABI | |
4827 | ||
4828 | #undef elf32_bed | |
4829 | #define elf32_bed elf32_i386_sol2_bed | |
4830 | ||
7dc98aea RO |
4831 | /* The 32-bit static TLS arena size is rounded to the nearest 8-byte |
4832 | boundary. */ | |
4833 | #undef elf_backend_static_tls_alignment | |
4834 | #define elf_backend_static_tls_alignment 8 | |
4835 | ||
a6cc6b3b RO |
4836 | /* The Solaris 2 ABI requires a plt symbol on all platforms. |
4837 | ||
4838 | Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output | |
4839 | File, p.63. */ | |
4840 | #undef elf_backend_want_plt_sym | |
4841 | #define elf_backend_want_plt_sym 1 | |
4842 | ||
4843 | #include "elf32-target.h" | |
4844 | ||
eac338cf PB |
4845 | /* VxWorks support. */ |
4846 | ||
4847 | #undef TARGET_LITTLE_SYM | |
4848 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec | |
4849 | #undef TARGET_LITTLE_NAME | |
4850 | #define TARGET_LITTLE_NAME "elf32-i386-vxworks" | |
d1036acb | 4851 | #undef ELF_OSABI |
eac338cf PB |
4852 | |
4853 | /* Like elf_i386_link_hash_table_create but with tweaks for VxWorks. */ | |
4854 | ||
4855 | static struct bfd_link_hash_table * | |
4856 | elf_i386_vxworks_link_hash_table_create (bfd *abfd) | |
4857 | { | |
4858 | struct bfd_link_hash_table *ret; | |
4859 | struct elf_i386_link_hash_table *htab; | |
4860 | ||
4861 | ret = elf_i386_link_hash_table_create (abfd); | |
4862 | if (ret) | |
4863 | { | |
4864 | htab = (struct elf_i386_link_hash_table *) ret; | |
4865 | htab->is_vxworks = 1; | |
4866 | htab->plt0_pad_byte = 0x90; | |
4867 | } | |
4868 | ||
4869 | return ret; | |
4870 | } | |
4871 | ||
4872 | ||
13285a1b AM |
4873 | #undef elf_backend_relocs_compatible |
4874 | #undef elf_backend_post_process_headers | |
eac338cf PB |
4875 | #undef bfd_elf32_bfd_link_hash_table_create |
4876 | #define bfd_elf32_bfd_link_hash_table_create \ | |
4877 | elf_i386_vxworks_link_hash_table_create | |
4878 | #undef elf_backend_add_symbol_hook | |
4879 | #define elf_backend_add_symbol_hook \ | |
4880 | elf_vxworks_add_symbol_hook | |
4881 | #undef elf_backend_link_output_symbol_hook | |
4882 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 4883 | elf_vxworks_link_output_symbol_hook |
eac338cf PB |
4884 | #undef elf_backend_emit_relocs |
4885 | #define elf_backend_emit_relocs elf_vxworks_emit_relocs | |
4886 | #undef elf_backend_final_write_processing | |
4887 | #define elf_backend_final_write_processing \ | |
4888 | elf_vxworks_final_write_processing | |
7dc98aea | 4889 | #undef elf_backend_static_tls_alignment |
eac338cf PB |
4890 | |
4891 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
4892 | define it. */ | |
4893 | #undef elf_backend_want_plt_sym | |
4894 | #define elf_backend_want_plt_sym 1 | |
4895 | ||
4896 | #undef elf32_bed | |
4897 | #define elf32_bed elf32_i386_vxworks_bed | |
4898 | ||
4899 | #include "elf32-target.h" |