Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Intel 80386/80486-specific support for 32-bit ELF |
250d07de | 2 | Copyright (C) 1993-2021 Free Software Foundation, Inc. |
252b5132 | 3 | |
571fe01f | 4 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 5 | |
571fe01f NC |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 8 | the Free Software Foundation; either version 3 of the License, or |
571fe01f | 9 | (at your option) any later version. |
252b5132 | 10 | |
571fe01f NC |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
252b5132 | 15 | |
571fe01f NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | MA 02110-1301, USA. */ | |
252b5132 | 20 | |
0afcef53 | 21 | #include "elfxx-x86.h" |
eac338cf | 22 | #include "elf-vxworks.h" |
e41b3a13 | 23 | #include "dwarf2.h" |
02a86693 | 24 | #include "opcode/i386.h" |
252b5132 | 25 | |
55fd94b0 AM |
26 | /* 386 uses REL relocations instead of RELA. */ |
27 | #define USE_REL 1 | |
252b5132 RH |
28 | |
29 | #include "elf/i386.h" | |
30 | ||
31 | static reloc_howto_type elf_howto_table[]= | |
32 | { | |
6346d5ca | 33 | HOWTO(R_386_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont, |
1b452ec6 | 34 | bfd_elf_generic_reloc, "R_386_NONE", |
b34976b6 AM |
35 | TRUE, 0x00000000, 0x00000000, FALSE), |
36 | HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 37 | bfd_elf_generic_reloc, "R_386_32", |
b34976b6 AM |
38 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
39 | HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 40 | bfd_elf_generic_reloc, "R_386_PC32", |
b34976b6 AM |
41 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
42 | HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 43 | bfd_elf_generic_reloc, "R_386_GOT32", |
b34976b6 AM |
44 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
45 | HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 46 | bfd_elf_generic_reloc, "R_386_PLT32", |
b34976b6 AM |
47 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
48 | HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 49 | bfd_elf_generic_reloc, "R_386_COPY", |
b34976b6 AM |
50 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
51 | HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 52 | bfd_elf_generic_reloc, "R_386_GLOB_DAT", |
b34976b6 AM |
53 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
54 | HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 55 | bfd_elf_generic_reloc, "R_386_JUMP_SLOT", |
b34976b6 AM |
56 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
57 | HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 58 | bfd_elf_generic_reloc, "R_386_RELATIVE", |
b34976b6 AM |
59 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
60 | HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 61 | bfd_elf_generic_reloc, "R_386_GOTOFF", |
b34976b6 AM |
62 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
63 | HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 64 | bfd_elf_generic_reloc, "R_386_GOTPC", |
b34976b6 | 65 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
1b452ec6 | 66 | |
dc47f327 AM |
67 | /* We have a gap in the reloc numbers here. |
68 | R_386_standard counts the number up to this point, and | |
69 | R_386_ext_offset is the value to subtract from a reloc type of | |
70 | R_386_16 thru R_386_PC8 to form an index into this table. */ | |
55fd94b0 AM |
71 | #define R_386_standard (R_386_GOTPC + 1) |
72 | #define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard) | |
1b452ec6 | 73 | |
37e55690 | 74 | /* These relocs are a GNU extension. */ |
b34976b6 | 75 | HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
37e55690 | 76 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF", |
b34976b6 AM |
77 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
78 | HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 79 | bfd_elf_generic_reloc, "R_386_TLS_IE", |
b34976b6 AM |
80 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
81 | HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 82 | bfd_elf_generic_reloc, "R_386_TLS_GOTIE", |
b34976b6 AM |
83 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
84 | HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 85 | bfd_elf_generic_reloc, "R_386_TLS_LE", |
b34976b6 AM |
86 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
87 | HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 88 | bfd_elf_generic_reloc, "R_386_TLS_GD", |
b34976b6 AM |
89 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
90 | HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 91 | bfd_elf_generic_reloc, "R_386_TLS_LDM", |
b34976b6 AM |
92 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
93 | HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 94 | bfd_elf_generic_reloc, "R_386_16", |
b34976b6 | 95 | TRUE, 0xffff, 0xffff, FALSE), |
b0360d8c | 96 | HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, |
1b452ec6 | 97 | bfd_elf_generic_reloc, "R_386_PC16", |
b34976b6 AM |
98 | TRUE, 0xffff, 0xffff, TRUE), |
99 | HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 100 | bfd_elf_generic_reloc, "R_386_8", |
b34976b6 AM |
101 | TRUE, 0xff, 0xff, FALSE), |
102 | HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
1b452ec6 | 103 | bfd_elf_generic_reloc, "R_386_PC8", |
b34976b6 | 104 | TRUE, 0xff, 0xff, TRUE), |
dc47f327 | 105 | |
55fd94b0 AM |
106 | #define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset) |
107 | #define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext) | |
13ae64f3 | 108 | /* These are common with Solaris TLS implementation. */ |
b34976b6 | 109 | HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
13ae64f3 | 110 | bfd_elf_generic_reloc, "R_386_TLS_LDO_32", |
b34976b6 AM |
111 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
112 | HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 113 | bfd_elf_generic_reloc, "R_386_TLS_IE_32", |
b34976b6 AM |
114 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
115 | HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 116 | bfd_elf_generic_reloc, "R_386_TLS_LE_32", |
b34976b6 AM |
117 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
118 | HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 119 | bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32", |
b34976b6 AM |
120 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
121 | HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 122 | bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32", |
b34976b6 AM |
123 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
124 | HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 125 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF32", |
b34976b6 | 126 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
1788fc08 L |
127 | HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned, |
128 | bfd_elf_generic_reloc, "R_386_SIZE32", | |
129 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
67a4f2b7 AO |
130 | HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
131 | bfd_elf_generic_reloc, "R_386_TLS_GOTDESC", | |
132 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
133 | HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
134 | bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL", | |
135 | FALSE, 0, 0, FALSE), | |
136 | HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
137 | bfd_elf_generic_reloc, "R_386_TLS_DESC", | |
138 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
cbe950e9 L |
139 | HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
140 | bfd_elf_generic_reloc, "R_386_IRELATIVE", | |
141 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
02a86693 L |
142 | HOWTO(R_386_GOT32X, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
143 | bfd_elf_generic_reloc, "R_386_GOT32X", | |
144 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
13ae64f3 JJ |
145 | |
146 | /* Another gap. */ | |
02a86693 | 147 | #define R_386_ext2 (R_386_GOT32X + 1 - R_386_tls_offset) |
c74be520 | 148 | #define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_ext2) |
252b5132 RH |
149 | |
150 | /* GNU extension to record C++ vtable hierarchy. */ | |
252b5132 RH |
151 | HOWTO (R_386_GNU_VTINHERIT, /* type */ |
152 | 0, /* rightshift */ | |
153 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
154 | 0, /* bitsize */ | |
b34976b6 | 155 | FALSE, /* pc_relative */ |
252b5132 RH |
156 | 0, /* bitpos */ |
157 | complain_overflow_dont, /* complain_on_overflow */ | |
158 | NULL, /* special_function */ | |
159 | "R_386_GNU_VTINHERIT", /* name */ | |
b34976b6 | 160 | FALSE, /* partial_inplace */ |
252b5132 RH |
161 | 0, /* src_mask */ |
162 | 0, /* dst_mask */ | |
b34976b6 | 163 | FALSE), /* pcrel_offset */ |
252b5132 RH |
164 | |
165 | /* GNU extension to record C++ vtable member usage. */ | |
252b5132 RH |
166 | HOWTO (R_386_GNU_VTENTRY, /* type */ |
167 | 0, /* rightshift */ | |
168 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
169 | 0, /* bitsize */ | |
b34976b6 | 170 | FALSE, /* pc_relative */ |
252b5132 RH |
171 | 0, /* bitpos */ |
172 | complain_overflow_dont, /* complain_on_overflow */ | |
173 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
174 | "R_386_GNU_VTENTRY", /* name */ | |
b34976b6 | 175 | FALSE, /* partial_inplace */ |
252b5132 RH |
176 | 0, /* src_mask */ |
177 | 0, /* dst_mask */ | |
b34976b6 | 178 | FALSE) /* pcrel_offset */ |
dc47f327 | 179 | |
55fd94b0 | 180 | #define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset) |
dc47f327 AM |
181 | |
182 | }; | |
183 | ||
daf1c414 L |
184 | #define X86_PCREL_TYPE_P(TYPE) ((TYPE) == R_386_PC32) |
185 | ||
aebcc8ff L |
186 | #define X86_SIZE_TYPE_P(TYPE) ((TYPE) == R_386_SIZE32) |
187 | ||
252b5132 | 188 | #ifdef DEBUG_GEN_RELOC |
55fd94b0 AM |
189 | #define TRACE(str) \ |
190 | fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str) | |
252b5132 RH |
191 | #else |
192 | #define TRACE(str) | |
193 | #endif | |
194 | ||
195 | static reloc_howto_type * | |
f3185997 | 196 | elf_i386_reloc_type_lookup (bfd *abfd, |
55fd94b0 | 197 | bfd_reloc_code_real_type code) |
252b5132 RH |
198 | { |
199 | switch (code) | |
200 | { | |
201 | case BFD_RELOC_NONE: | |
202 | TRACE ("BFD_RELOC_NONE"); | |
55fd94b0 | 203 | return &elf_howto_table[R_386_NONE]; |
252b5132 RH |
204 | |
205 | case BFD_RELOC_32: | |
206 | TRACE ("BFD_RELOC_32"); | |
55fd94b0 | 207 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
208 | |
209 | case BFD_RELOC_CTOR: | |
210 | TRACE ("BFD_RELOC_CTOR"); | |
55fd94b0 | 211 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
212 | |
213 | case BFD_RELOC_32_PCREL: | |
214 | TRACE ("BFD_RELOC_PC32"); | |
55fd94b0 | 215 | return &elf_howto_table[R_386_PC32]; |
252b5132 RH |
216 | |
217 | case BFD_RELOC_386_GOT32: | |
218 | TRACE ("BFD_RELOC_386_GOT32"); | |
55fd94b0 | 219 | return &elf_howto_table[R_386_GOT32]; |
252b5132 RH |
220 | |
221 | case BFD_RELOC_386_PLT32: | |
222 | TRACE ("BFD_RELOC_386_PLT32"); | |
55fd94b0 | 223 | return &elf_howto_table[R_386_PLT32]; |
252b5132 RH |
224 | |
225 | case BFD_RELOC_386_COPY: | |
226 | TRACE ("BFD_RELOC_386_COPY"); | |
55fd94b0 | 227 | return &elf_howto_table[R_386_COPY]; |
252b5132 RH |
228 | |
229 | case BFD_RELOC_386_GLOB_DAT: | |
230 | TRACE ("BFD_RELOC_386_GLOB_DAT"); | |
55fd94b0 | 231 | return &elf_howto_table[R_386_GLOB_DAT]; |
252b5132 RH |
232 | |
233 | case BFD_RELOC_386_JUMP_SLOT: | |
234 | TRACE ("BFD_RELOC_386_JUMP_SLOT"); | |
55fd94b0 | 235 | return &elf_howto_table[R_386_JUMP_SLOT]; |
252b5132 RH |
236 | |
237 | case BFD_RELOC_386_RELATIVE: | |
238 | TRACE ("BFD_RELOC_386_RELATIVE"); | |
55fd94b0 | 239 | return &elf_howto_table[R_386_RELATIVE]; |
252b5132 RH |
240 | |
241 | case BFD_RELOC_386_GOTOFF: | |
242 | TRACE ("BFD_RELOC_386_GOTOFF"); | |
55fd94b0 | 243 | return &elf_howto_table[R_386_GOTOFF]; |
252b5132 RH |
244 | |
245 | case BFD_RELOC_386_GOTPC: | |
246 | TRACE ("BFD_RELOC_386_GOTPC"); | |
55fd94b0 | 247 | return &elf_howto_table[R_386_GOTPC]; |
252b5132 | 248 | |
37e55690 JJ |
249 | /* These relocs are a GNU extension. */ |
250 | case BFD_RELOC_386_TLS_TPOFF: | |
251 | TRACE ("BFD_RELOC_386_TLS_TPOFF"); | |
55fd94b0 | 252 | return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset]; |
37e55690 JJ |
253 | |
254 | case BFD_RELOC_386_TLS_IE: | |
255 | TRACE ("BFD_RELOC_386_TLS_IE"); | |
55fd94b0 | 256 | return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset]; |
37e55690 JJ |
257 | |
258 | case BFD_RELOC_386_TLS_GOTIE: | |
259 | TRACE ("BFD_RELOC_386_TLS_GOTIE"); | |
55fd94b0 | 260 | return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset]; |
37e55690 | 261 | |
13ae64f3 JJ |
262 | case BFD_RELOC_386_TLS_LE: |
263 | TRACE ("BFD_RELOC_386_TLS_LE"); | |
55fd94b0 | 264 | return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset]; |
13ae64f3 JJ |
265 | |
266 | case BFD_RELOC_386_TLS_GD: | |
267 | TRACE ("BFD_RELOC_386_TLS_GD"); | |
55fd94b0 | 268 | return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset]; |
13ae64f3 JJ |
269 | |
270 | case BFD_RELOC_386_TLS_LDM: | |
271 | TRACE ("BFD_RELOC_386_TLS_LDM"); | |
55fd94b0 | 272 | return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset]; |
13ae64f3 | 273 | |
252b5132 RH |
274 | case BFD_RELOC_16: |
275 | TRACE ("BFD_RELOC_16"); | |
55fd94b0 | 276 | return &elf_howto_table[R_386_16 - R_386_ext_offset]; |
252b5132 RH |
277 | |
278 | case BFD_RELOC_16_PCREL: | |
279 | TRACE ("BFD_RELOC_16_PCREL"); | |
55fd94b0 | 280 | return &elf_howto_table[R_386_PC16 - R_386_ext_offset]; |
252b5132 RH |
281 | |
282 | case BFD_RELOC_8: | |
283 | TRACE ("BFD_RELOC_8"); | |
55fd94b0 | 284 | return &elf_howto_table[R_386_8 - R_386_ext_offset]; |
252b5132 RH |
285 | |
286 | case BFD_RELOC_8_PCREL: | |
287 | TRACE ("BFD_RELOC_8_PCREL"); | |
55fd94b0 | 288 | return &elf_howto_table[R_386_PC8 - R_386_ext_offset]; |
252b5132 | 289 | |
13ae64f3 JJ |
290 | /* Common with Sun TLS implementation. */ |
291 | case BFD_RELOC_386_TLS_LDO_32: | |
292 | TRACE ("BFD_RELOC_386_TLS_LDO_32"); | |
55fd94b0 | 293 | return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset]; |
13ae64f3 JJ |
294 | |
295 | case BFD_RELOC_386_TLS_IE_32: | |
296 | TRACE ("BFD_RELOC_386_TLS_IE_32"); | |
55fd94b0 | 297 | return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
298 | |
299 | case BFD_RELOC_386_TLS_LE_32: | |
300 | TRACE ("BFD_RELOC_386_TLS_LE_32"); | |
55fd94b0 | 301 | return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
302 | |
303 | case BFD_RELOC_386_TLS_DTPMOD32: | |
304 | TRACE ("BFD_RELOC_386_TLS_DTPMOD32"); | |
55fd94b0 | 305 | return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset]; |
13ae64f3 JJ |
306 | |
307 | case BFD_RELOC_386_TLS_DTPOFF32: | |
308 | TRACE ("BFD_RELOC_386_TLS_DTPOFF32"); | |
55fd94b0 | 309 | return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset]; |
13ae64f3 JJ |
310 | |
311 | case BFD_RELOC_386_TLS_TPOFF32: | |
312 | TRACE ("BFD_RELOC_386_TLS_TPOFF32"); | |
55fd94b0 | 313 | return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset]; |
13ae64f3 | 314 | |
1788fc08 L |
315 | case BFD_RELOC_SIZE32: |
316 | TRACE ("BFD_RELOC_SIZE32"); | |
317 | return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset]; | |
318 | ||
67a4f2b7 AO |
319 | case BFD_RELOC_386_TLS_GOTDESC: |
320 | TRACE ("BFD_RELOC_386_TLS_GOTDESC"); | |
321 | return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset]; | |
322 | ||
323 | case BFD_RELOC_386_TLS_DESC_CALL: | |
324 | TRACE ("BFD_RELOC_386_TLS_DESC_CALL"); | |
325 | return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset]; | |
326 | ||
327 | case BFD_RELOC_386_TLS_DESC: | |
328 | TRACE ("BFD_RELOC_386_TLS_DESC"); | |
329 | return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset]; | |
330 | ||
cbe950e9 L |
331 | case BFD_RELOC_386_IRELATIVE: |
332 | TRACE ("BFD_RELOC_386_IRELATIVE"); | |
2a750708 | 333 | return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset]; |
cbe950e9 | 334 | |
02a86693 L |
335 | case BFD_RELOC_386_GOT32X: |
336 | TRACE ("BFD_RELOC_386_GOT32X"); | |
337 | return &elf_howto_table[R_386_GOT32X - R_386_tls_offset]; | |
338 | ||
252b5132 RH |
339 | case BFD_RELOC_VTABLE_INHERIT: |
340 | TRACE ("BFD_RELOC_VTABLE_INHERIT"); | |
55fd94b0 | 341 | return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset]; |
252b5132 RH |
342 | |
343 | case BFD_RELOC_VTABLE_ENTRY: | |
344 | TRACE ("BFD_RELOC_VTABLE_ENTRY"); | |
55fd94b0 | 345 | return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset]; |
252b5132 RH |
346 | |
347 | default: | |
f3185997 NC |
348 | TRACE ("Unknown"); |
349 | /* xgettext:c-format */ | |
e8f5af78 | 350 | _bfd_error_handler (_("%pB: unsupported relocation type: %#x"), |
f3185997 NC |
351 | abfd, (int) code); |
352 | bfd_set_error (bfd_error_bad_value); | |
353 | return NULL; | |
252b5132 | 354 | } |
252b5132 RH |
355 | } |
356 | ||
157090f7 AM |
357 | static reloc_howto_type * |
358 | elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
359 | const char *r_name) | |
360 | { | |
361 | unsigned int i; | |
362 | ||
363 | for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++) | |
364 | if (elf_howto_table[i].name != NULL | |
365 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
366 | return &elf_howto_table[i]; | |
367 | ||
368 | return NULL; | |
369 | } | |
370 | ||
142411ca | 371 | static reloc_howto_type * |
b366503e | 372 | elf_i386_rtype_to_howto (unsigned r_type) |
252b5132 | 373 | { |
dc47f327 AM |
374 | unsigned int indx; |
375 | ||
376 | if ((indx = r_type) >= R_386_standard | |
377 | && ((indx = r_type - R_386_ext_offset) - R_386_standard | |
378 | >= R_386_ext - R_386_standard) | |
13ae64f3 | 379 | && ((indx = r_type - R_386_tls_offset) - R_386_ext |
c74be520 L |
380 | >= R_386_ext2 - R_386_ext) |
381 | && ((indx = r_type - R_386_vt_offset) - R_386_ext2 | |
382 | >= R_386_vt - R_386_ext2)) | |
f3185997 | 383 | return NULL; |
06614111 NC |
384 | /* PR 17512: file: 0f67f69d. */ |
385 | if (elf_howto_table [indx].type != r_type) | |
386 | return NULL; | |
142411ca L |
387 | return &elf_howto_table[indx]; |
388 | } | |
389 | ||
f3185997 NC |
390 | static bfd_boolean |
391 | elf_i386_info_to_howto_rel (bfd *abfd, | |
142411ca L |
392 | arelent *cache_ptr, |
393 | Elf_Internal_Rela *dst) | |
394 | { | |
395 | unsigned int r_type = ELF32_R_TYPE (dst->r_info); | |
f3185997 | 396 | |
b366503e | 397 | if ((cache_ptr->howto = elf_i386_rtype_to_howto (r_type)) == NULL) |
f3185997 NC |
398 | { |
399 | /* xgettext:c-format */ | |
400 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
401 | abfd, r_type); | |
402 | bfd_set_error (bfd_error_bad_value); | |
403 | return FALSE; | |
404 | } | |
405 | ||
406 | return TRUE; | |
252b5132 RH |
407 | } |
408 | ||
409 | /* Return whether a symbol name implies a local label. The UnixWare | |
410 | 2.1 cc generates temporary symbols that start with .X, so we | |
411 | recognize them here. FIXME: do other SVR4 compilers also use .X?. | |
412 | If so, we should move the .X recognition into | |
413 | _bfd_elf_is_local_label_name. */ | |
414 | ||
b34976b6 | 415 | static bfd_boolean |
55fd94b0 | 416 | elf_i386_is_local_label_name (bfd *abfd, const char *name) |
252b5132 RH |
417 | { |
418 | if (name[0] == '.' && name[1] == 'X') | |
b34976b6 | 419 | return TRUE; |
252b5132 RH |
420 | |
421 | return _bfd_elf_is_local_label_name (abfd, name); | |
422 | } | |
423 | \f | |
38701953 | 424 | /* Support for core dump NOTE sections. */ |
61adc1a4 | 425 | |
b34976b6 | 426 | static bfd_boolean |
55fd94b0 | 427 | elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
38701953 AM |
428 | { |
429 | int offset; | |
eea6121a | 430 | size_t size; |
38701953 | 431 | |
61adc1a4 | 432 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 433 | { |
61adc1a4 NC |
434 | int pr_version = bfd_get_32 (abfd, note->descdata); |
435 | ||
436 | if (pr_version != 1) | |
07d6d2b8 | 437 | return FALSE; |
61adc1a4 NC |
438 | |
439 | /* pr_cursig */ | |
228e534f | 440 | elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20); |
61adc1a4 NC |
441 | |
442 | /* pr_pid */ | |
228e534f | 443 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
61adc1a4 NC |
444 | |
445 | /* pr_reg */ | |
446 | offset = 28; | |
eea6121a | 447 | size = bfd_get_32 (abfd, note->descdata + 8); |
61adc1a4 NC |
448 | } |
449 | else | |
450 | { | |
451 | switch (note->descsz) | |
452 | { | |
453 | default: | |
454 | return FALSE; | |
38701953 | 455 | |
61adc1a4 NC |
456 | case 144: /* Linux/i386 */ |
457 | /* pr_cursig */ | |
228e534f | 458 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
38701953 | 459 | |
61adc1a4 | 460 | /* pr_pid */ |
228e534f | 461 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
38701953 | 462 | |
61adc1a4 NC |
463 | /* pr_reg */ |
464 | offset = 72; | |
eea6121a | 465 | size = 68; |
38701953 | 466 | |
61adc1a4 NC |
467 | break; |
468 | } | |
38701953 AM |
469 | } |
470 | ||
471 | /* Make a ".reg/999" section. */ | |
472 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 473 | size, note->descpos + offset); |
38701953 AM |
474 | } |
475 | ||
b34976b6 | 476 | static bfd_boolean |
55fd94b0 | 477 | elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
38701953 | 478 | { |
61adc1a4 | 479 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 480 | { |
61adc1a4 NC |
481 | int pr_version = bfd_get_32 (abfd, note->descdata); |
482 | ||
483 | if (pr_version != 1) | |
b34976b6 | 484 | return FALSE; |
38701953 | 485 | |
228e534f | 486 | elf_tdata (abfd)->core->program |
61adc1a4 | 487 | = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17); |
228e534f | 488 | elf_tdata (abfd)->core->command |
61adc1a4 NC |
489 | = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81); |
490 | } | |
491 | else | |
492 | { | |
493 | switch (note->descsz) | |
494 | { | |
495 | default: | |
496 | return FALSE; | |
497 | ||
498 | case 124: /* Linux/i386 elf_prpsinfo. */ | |
228e534f | 499 | elf_tdata (abfd)->core->pid |
261b8d08 | 500 | = bfd_get_32 (abfd, note->descdata + 12); |
228e534f | 501 | elf_tdata (abfd)->core->program |
61adc1a4 | 502 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 503 | elf_tdata (abfd)->core->command |
61adc1a4 NC |
504 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
505 | } | |
38701953 AM |
506 | } |
507 | ||
508 | /* Note that for some reason, a spurious space is tacked | |
509 | onto the end of the args in some (at least one anyway) | |
510 | implementations, so strip it off if it exists. */ | |
38701953 | 511 | { |
228e534f | 512 | char *command = elf_tdata (abfd)->core->command; |
38701953 AM |
513 | int n = strlen (command); |
514 | ||
515 | if (0 < n && command[n - 1] == ' ') | |
516 | command[n - 1] = '\0'; | |
517 | } | |
518 | ||
b34976b6 | 519 | return TRUE; |
38701953 AM |
520 | } |
521 | \f | |
522 | /* Functions for the i386 ELF linker. | |
523 | ||
524 | In order to gain some understanding of code in this file without | |
525 | knowing all the intricate details of the linker, note the | |
526 | following: | |
527 | ||
528 | Functions named elf_i386_* are called by external routines, other | |
529 | functions are only called locally. elf_i386_* functions appear | |
530 | in this file more or less in the order in which they are called | |
531 | from external routines. eg. elf_i386_check_relocs is called | |
532 | early in the link process, elf_i386_finish_dynamic_sections is | |
533 | one of the last functions. */ | |
534 | ||
f604c2a2 | 535 | /* The size in bytes of an entry in the lazy procedure linkage table. */ |
252b5132 | 536 | |
f604c2a2 | 537 | #define LAZY_PLT_ENTRY_SIZE 16 |
252b5132 | 538 | |
f604c2a2 L |
539 | /* The size in bytes of an entry in the non-lazy procedure linkage |
540 | table. */ | |
252b5132 | 541 | |
f604c2a2 L |
542 | #define NON_LAZY_PLT_ENTRY_SIZE 8 |
543 | ||
544 | /* The first entry in an absolute lazy procedure linkage table looks | |
545 | like this. See the SVR4 ABI i386 supplement to see how this works. | |
546 | Will be padded to LAZY_PLT_ENTRY_SIZE with lazy_plt->plt0_pad_byte. */ | |
547 | ||
548 | static const bfd_byte elf_i386_lazy_plt0_entry[12] = | |
252b5132 RH |
549 | { |
550 | 0xff, 0x35, /* pushl contents of address */ | |
551 | 0, 0, 0, 0, /* replaced with address of .got + 4. */ | |
552 | 0xff, 0x25, /* jmp indirect */ | |
eac338cf | 553 | 0, 0, 0, 0 /* replaced with address of .got + 8. */ |
252b5132 RH |
554 | }; |
555 | ||
f604c2a2 L |
556 | /* Subsequent entries in an absolute lazy procedure linkage table look |
557 | like this. */ | |
252b5132 | 558 | |
f604c2a2 | 559 | static const bfd_byte elf_i386_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] = |
252b5132 RH |
560 | { |
561 | 0xff, 0x25, /* jmp indirect */ | |
562 | 0, 0, 0, 0, /* replaced with address of this symbol in .got. */ | |
563 | 0x68, /* pushl immediate */ | |
564 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
565 | 0xe9, /* jmp relative */ | |
566 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
567 | }; | |
568 | ||
f604c2a2 L |
569 | /* The first entry in a PIC lazy procedure linkage table look like |
570 | this. Will be padded to LAZY_PLT_ENTRY_SIZE with | |
571 | lazy_plt->plt0_pad_byte. */ | |
252b5132 | 572 | |
f604c2a2 | 573 | static const bfd_byte elf_i386_pic_lazy_plt0_entry[12] = |
252b5132 RH |
574 | { |
575 | 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */ | |
eac338cf | 576 | 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */ |
252b5132 RH |
577 | }; |
578 | ||
f604c2a2 L |
579 | /* Subsequent entries in a PIC lazy procedure linkage table look like |
580 | this. */ | |
252b5132 | 581 | |
f604c2a2 | 582 | static const bfd_byte elf_i386_pic_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] = |
252b5132 RH |
583 | { |
584 | 0xff, 0xa3, /* jmp *offset(%ebx) */ | |
585 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
586 | 0x68, /* pushl immediate */ | |
587 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
588 | 0xe9, /* jmp relative */ | |
589 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
590 | }; | |
591 | ||
f604c2a2 | 592 | /* Entries in the non-lazy procedure linkage table look like this. */ |
dd7e64d4 | 593 | |
f604c2a2 | 594 | static const bfd_byte elf_i386_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] = |
dd7e64d4 L |
595 | { |
596 | 0xff, 0x25, /* jmp indirect */ | |
597 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
598 | 0x66, 0x90 /* xchg %ax,%ax */ | |
599 | }; | |
600 | ||
f604c2a2 L |
601 | /* Entries in the PIC non-lazy procedure linkage table look like |
602 | this. */ | |
dd7e64d4 | 603 | |
f604c2a2 | 604 | static const bfd_byte elf_i386_pic_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] = |
dd7e64d4 L |
605 | { |
606 | 0xff, 0xa3, /* jmp *offset(%ebx) */ | |
607 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
608 | 0x66, 0x90 /* xchg %ax,%ax */ | |
609 | }; | |
610 | ||
ee2fdd6f L |
611 | /* The first entry in an absolute IBT-enabled lazy procedure linkage |
612 | table looks like this. */ | |
613 | ||
614 | static const bfd_byte elf_i386_lazy_ibt_plt0_entry[LAZY_PLT_ENTRY_SIZE] = | |
615 | { | |
07d6d2b8 AM |
616 | 0xff, 0x35, 0, 0, 0, 0, /* pushl GOT[1] */ |
617 | 0xff, 0x25, 0, 0, 0, 0, /* jmp *GOT[2] */ | |
618 | 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */ | |
ee2fdd6f L |
619 | }; |
620 | ||
621 | /* Subsequent entries for an absolute IBT-enabled lazy procedure linkage | |
622 | table look like this. Subsequent entries for a PIC IBT-enabled lazy | |
623 | procedure linkage table are the same. */ | |
624 | ||
625 | static const bfd_byte elf_i386_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] = | |
626 | { | |
07d6d2b8 AM |
627 | 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */ |
628 | 0x68, 0, 0, 0, 0, /* pushl immediate */ | |
629 | 0xe9, 0, 0, 0, 0, /* jmp relative */ | |
630 | 0x66, 0x90 /* xchg %ax,%ax */ | |
ee2fdd6f L |
631 | }; |
632 | ||
633 | /* The first entry in a PIC IBT-enabled lazy procedure linkage table | |
634 | look like. */ | |
635 | ||
636 | static const bfd_byte elf_i386_pic_lazy_ibt_plt0_entry[LAZY_PLT_ENTRY_SIZE] = | |
637 | { | |
638 | 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */ | |
07d6d2b8 AM |
639 | 0xff, 0xa3, 8, 0, 0, 0, /* jmp *8(%ebx) */ |
640 | 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */ | |
ee2fdd6f L |
641 | }; |
642 | ||
643 | /* Entries for branches with IBT-enabled in the absolute non-lazey | |
644 | procedure linkage table look like this. They have the same size | |
645 | as the lazy PLT entry. */ | |
646 | ||
647 | static const bfd_byte elf_i386_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] = | |
648 | { | |
07d6d2b8 | 649 | 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */ |
ee2fdd6f L |
650 | 0xff, 0x25, 0, 0, 0, 0, /* jmp *name@GOT */ |
651 | 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */ | |
652 | }; | |
653 | ||
654 | /* Entries for branches with IBT-enabled in the PIC non-lazey procedure | |
655 | linkage table look like this. They have the same size as the lazy | |
656 | PLT entry. */ | |
657 | ||
658 | static const bfd_byte elf_i386_pic_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] = | |
659 | { | |
07d6d2b8 | 660 | 0xf3, 0x0f, 0x1e, 0xfb, /* endbr32 */ |
ee2fdd6f L |
661 | 0xff, 0xa3, 0, 0, 0, 0, /* jmp *name@GOT(%ebx) */ |
662 | 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */ | |
663 | }; | |
664 | ||
f604c2a2 | 665 | /* .eh_frame covering the lazy .plt section. */ |
e41b3a13 | 666 | |
f604c2a2 | 667 | static const bfd_byte elf_i386_eh_frame_lazy_plt[] = |
e41b3a13 | 668 | { |
e41b3a13 JJ |
669 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ |
670 | 0, 0, 0, 0, /* CIE ID */ | |
671 | 1, /* CIE version */ | |
672 | 'z', 'R', 0, /* Augmentation string */ | |
673 | 1, /* Code alignment factor */ | |
674 | 0x7c, /* Data alignment factor */ | |
675 | 8, /* Return address column */ | |
676 | 1, /* Augmentation size */ | |
677 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
678 | DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */ | |
679 | DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */ | |
680 | DW_CFA_nop, DW_CFA_nop, | |
681 | ||
682 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
683 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
684 | 0, 0, 0, 0, /* R_386_PC32 .plt goes here */ | |
685 | 0, 0, 0, 0, /* .plt size goes here */ | |
686 | 0, /* Augmentation size */ | |
687 | DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */ | |
688 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
689 | DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */ | |
690 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
691 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
692 | 11, /* Block length */ | |
693 | DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */ | |
694 | DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */ | |
695 | DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge, | |
28ede8be | 696 | DW_OP_lit2, DW_OP_shl, DW_OP_plus, |
e41b3a13 JJ |
697 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop |
698 | }; | |
699 | ||
ee2fdd6f L |
700 | /* .eh_frame covering the lazy .plt section with IBT-enabled. */ |
701 | ||
702 | static const bfd_byte elf_i386_eh_frame_lazy_ibt_plt[] = | |
703 | { | |
704 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
705 | 0, 0, 0, 0, /* CIE ID */ | |
706 | 1, /* CIE version */ | |
707 | 'z', 'R', 0, /* Augmentation string */ | |
708 | 1, /* Code alignment factor */ | |
709 | 0x7c, /* Data alignment factor */ | |
710 | 8, /* Return address column */ | |
711 | 1, /* Augmentation size */ | |
712 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
713 | DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */ | |
714 | DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */ | |
715 | DW_CFA_nop, DW_CFA_nop, | |
716 | ||
717 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
718 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
719 | 0, 0, 0, 0, /* R_386_PC32 .plt goes here */ | |
720 | 0, 0, 0, 0, /* .plt size goes here */ | |
721 | 0, /* Augmentation size */ | |
722 | DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */ | |
723 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
724 | DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */ | |
725 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
726 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
727 | 11, /* Block length */ | |
728 | DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */ | |
729 | DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */ | |
730 | DW_OP_lit15, DW_OP_and, DW_OP_lit9, DW_OP_ge, | |
731 | DW_OP_lit2, DW_OP_shl, DW_OP_plus, | |
732 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
733 | }; | |
734 | ||
f604c2a2 | 735 | /* .eh_frame covering the non-lazy .plt section. */ |
fff53dae | 736 | |
f604c2a2 | 737 | static const bfd_byte elf_i386_eh_frame_non_lazy_plt[] = |
fff53dae L |
738 | { |
739 | #define PLT_GOT_FDE_LENGTH 16 | |
740 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
741 | 0, 0, 0, 0, /* CIE ID */ | |
742 | 1, /* CIE version */ | |
743 | 'z', 'R', 0, /* Augmentation string */ | |
744 | 1, /* Code alignment factor */ | |
745 | 0x7c, /* Data alignment factor */ | |
746 | 8, /* Return address column */ | |
747 | 1, /* Augmentation size */ | |
748 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
749 | DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */ | |
750 | DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */ | |
751 | DW_CFA_nop, DW_CFA_nop, | |
752 | ||
753 | PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
754 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
f604c2a2 L |
755 | 0, 0, 0, 0, /* the start of non-lazy .plt goes here */ |
756 | 0, 0, 0, 0, /* non-lazy .plt size goes here */ | |
fff53dae L |
757 | 0, /* Augmentation size */ |
758 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop | |
759 | }; | |
760 | ||
25e762b9 | 761 | /* These are the standard parameters. */ |
765e526c | 762 | static const struct elf_x86_lazy_plt_layout elf_i386_lazy_plt = |
25e762b9 | 763 | { |
07d6d2b8 AM |
764 | elf_i386_lazy_plt0_entry, /* plt0_entry */ |
765 | sizeof (elf_i386_lazy_plt0_entry), /* plt0_entry_size */ | |
766 | elf_i386_lazy_plt_entry, /* plt_entry */ | |
767 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
92e68c1d L |
768 | NULL, /* plt_tlsdesc_entry */ |
769 | 0, /* plt_tlsdesc_entry_size*/ | |
770 | 0, /* plt_tlsdesc_got1_offset */ | |
771 | 0, /* plt_tlsdesc_got2_offset */ | |
772 | 0, /* plt_tlsdesc_got1_insn_end */ | |
773 | 0, /* plt_tlsdesc_got2_insn_end */ | |
07d6d2b8 AM |
774 | 2, /* plt0_got1_offset */ |
775 | 8, /* plt0_got2_offset */ | |
776 | 0, /* plt0_got2_insn_end */ | |
777 | 2, /* plt_got_offset */ | |
778 | 7, /* plt_reloc_offset */ | |
779 | 12, /* plt_plt_offset */ | |
780 | 0, /* plt_got_insn_size */ | |
781 | 0, /* plt_plt_insn_end */ | |
782 | 6, /* plt_lazy_offset */ | |
783 | elf_i386_pic_lazy_plt0_entry, /* pic_plt0_entry */ | |
784 | elf_i386_pic_lazy_plt_entry, /* pic_plt_entry */ | |
785 | elf_i386_eh_frame_lazy_plt, /* eh_frame_plt */ | |
f604c2a2 L |
786 | sizeof (elf_i386_eh_frame_lazy_plt) /* eh_frame_plt_size */ |
787 | }; | |
788 | ||
765e526c | 789 | static const struct elf_x86_non_lazy_plt_layout elf_i386_non_lazy_plt = |
f604c2a2 | 790 | { |
07d6d2b8 AM |
791 | elf_i386_non_lazy_plt_entry, /* plt_entry */ |
792 | elf_i386_pic_non_lazy_plt_entry, /* pic_plt_entry */ | |
793 | NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
794 | 2, /* plt_got_offset */ | |
795 | 0, /* plt_got_insn_size */ | |
796 | elf_i386_eh_frame_non_lazy_plt, /* eh_frame_plt */ | |
f604c2a2 | 797 | sizeof (elf_i386_eh_frame_non_lazy_plt) /* eh_frame_plt_size */ |
25e762b9 | 798 | }; |
ee2fdd6f | 799 | |
765e526c | 800 | static const struct elf_x86_lazy_plt_layout elf_i386_lazy_ibt_plt = |
ee2fdd6f | 801 | { |
07d6d2b8 | 802 | elf_i386_lazy_ibt_plt0_entry, /* plt0_entry */ |
ee2fdd6f | 803 | sizeof (elf_i386_lazy_ibt_plt0_entry), /* plt0_entry_size */ |
07d6d2b8 AM |
804 | elf_i386_lazy_ibt_plt_entry, /* plt_entry */ |
805 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
92e68c1d L |
806 | NULL, /* plt_tlsdesc_entry */ |
807 | 0, /* plt_tlsdesc_entry_size*/ | |
808 | 0, /* plt_tlsdesc_got1_offset */ | |
809 | 0, /* plt_tlsdesc_got2_offset */ | |
810 | 0, /* plt_tlsdesc_got1_insn_end */ | |
811 | 0, /* plt_tlsdesc_got2_insn_end */ | |
07d6d2b8 AM |
812 | 2, /* plt0_got1_offset */ |
813 | 8, /* plt0_got2_offset */ | |
814 | 0, /* plt0_got2_insn_end */ | |
815 | 4+2, /* plt_got_offset */ | |
816 | 4+1, /* plt_reloc_offset */ | |
817 | 4+6, /* plt_plt_offset */ | |
818 | 0, /* plt_got_insn_size */ | |
819 | 0, /* plt_plt_insn_end */ | |
820 | 0, /* plt_lazy_offset */ | |
821 | elf_i386_pic_lazy_ibt_plt0_entry, /* pic_plt0_entry */ | |
822 | elf_i386_lazy_ibt_plt_entry, /* pic_plt_entry */ | |
823 | elf_i386_eh_frame_lazy_ibt_plt, /* eh_frame_plt */ | |
ee2fdd6f L |
824 | sizeof (elf_i386_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */ |
825 | }; | |
826 | ||
765e526c | 827 | static const struct elf_x86_non_lazy_plt_layout elf_i386_non_lazy_ibt_plt = |
ee2fdd6f | 828 | { |
07d6d2b8 | 829 | elf_i386_non_lazy_ibt_plt_entry, /* plt_entry */ |
ee2fdd6f | 830 | elf_i386_pic_non_lazy_ibt_plt_entry,/* pic_plt_entry */ |
07d6d2b8 AM |
831 | LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */ |
832 | 4+2, /* plt_got_offset */ | |
833 | 0, /* plt_got_insn_size */ | |
834 | elf_i386_eh_frame_non_lazy_plt, /* eh_frame_plt */ | |
ee2fdd6f L |
835 | sizeof (elf_i386_eh_frame_non_lazy_plt) /* eh_frame_plt_size */ |
836 | }; | |
25e762b9 RM |
837 | \f |
838 | ||
eac338cf PB |
839 | /* On VxWorks, the .rel.plt.unloaded section has absolute relocations |
840 | for the PLTResolve stub and then for each PLT entry. */ | |
841 | #define PLTRESOLVE_RELOCS_SHLIB 0 | |
842 | #define PLTRESOLVE_RELOCS 2 | |
843 | #define PLT_NON_JUMP_SLOT_RELOCS 2 | |
844 | ||
142411ca L |
845 | /* Return TRUE if the TLS access code sequence support transition |
846 | from R_TYPE. */ | |
847 | ||
848 | static bfd_boolean | |
bedfd056 | 849 | elf_i386_check_tls_transition (asection *sec, |
142411ca L |
850 | bfd_byte *contents, |
851 | Elf_Internal_Shdr *symtab_hdr, | |
852 | struct elf_link_hash_entry **sym_hashes, | |
853 | unsigned int r_type, | |
854 | const Elf_Internal_Rela *rel, | |
855 | const Elf_Internal_Rela *relend) | |
13ae64f3 | 856 | { |
6eaa7fb5 | 857 | unsigned int val, type, reg; |
142411ca L |
858 | unsigned long r_symndx; |
859 | struct elf_link_hash_entry *h; | |
860 | bfd_vma offset; | |
6eaa7fb5 | 861 | bfd_byte *call; |
1d4af308 | 862 | bfd_boolean indirect_call; |
142411ca | 863 | |
142411ca | 864 | offset = rel->r_offset; |
13ae64f3 | 865 | switch (r_type) |
142411ca L |
866 | { |
867 | case R_386_TLS_GD: | |
868 | case R_386_TLS_LDM: | |
869 | if (offset < 2 || (rel + 1) >= relend) | |
870 | return FALSE; | |
871 | ||
6eaa7fb5 L |
872 | indirect_call = FALSE; |
873 | call = contents + offset + 4; | |
874 | val = *(call - 5); | |
875 | type = *(call - 6); | |
142411ca L |
876 | if (r_type == R_386_TLS_GD) |
877 | { | |
09e8c3bf | 878 | /* Check transition from GD access model. Only |
6eaa7fb5 L |
879 | leal foo@tlsgd(,%ebx,1), %eax |
880 | call ___tls_get_addr@PLT | |
881 | or | |
882 | leal foo@tlsgd(%ebx) %eax | |
883 | call ___tls_get_addr@PLT | |
884 | nop | |
885 | or | |
886 | leal foo@tlsgd(%reg), %eax | |
887 | call *___tls_get_addr@GOT(%reg) | |
888 | which may be converted to | |
889 | addr32 call ___tls_get_addr | |
142411ca | 890 | can transit to different access model. */ |
6eaa7fb5 L |
891 | if ((offset + 10) > sec->size |
892 | || (type != 0x8d && type != 0x04)) | |
142411ca L |
893 | return FALSE; |
894 | ||
142411ca L |
895 | if (type == 0x04) |
896 | { | |
6eaa7fb5 L |
897 | /* leal foo@tlsgd(,%ebx,1), %eax |
898 | call ___tls_get_addr@PLT */ | |
142411ca L |
899 | if (offset < 3) |
900 | return FALSE; | |
901 | ||
6eaa7fb5 L |
902 | if (*(call - 7) != 0x8d |
903 | || val != 0x1d | |
904 | || call[0] != 0xe8) | |
142411ca L |
905 | return FALSE; |
906 | } | |
907 | else | |
908 | { | |
6eaa7fb5 L |
909 | /* This must be |
910 | leal foo@tlsgd(%ebx), %eax | |
911 | call ___tls_get_addr@PLT | |
912 | nop | |
913 | or | |
914 | leal foo@tlsgd(%reg), %eax | |
915 | call *___tls_get_addr@GOT(%reg) | |
916 | which may be converted to | |
917 | addr32 call ___tls_get_addr | |
918 | ||
919 | %eax can't be used as the GOT base register since it | |
920 | is used to pass parameter to ___tls_get_addr. */ | |
921 | reg = val & 7; | |
922 | if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0) | |
142411ca L |
923 | return FALSE; |
924 | ||
6eaa7fb5 L |
925 | indirect_call = call[0] == 0xff; |
926 | if (!(reg == 3 && call[0] == 0xe8 && call[5] == 0x90) | |
927 | && !(call[0] == 0x67 && call[1] == 0xe8) | |
928 | && !(indirect_call | |
929 | && (call[1] & 0xf8) == 0x90 | |
930 | && (call[1] & 0x7) == reg)) | |
142411ca L |
931 | return FALSE; |
932 | } | |
933 | } | |
934 | else | |
935 | { | |
936 | /* Check transition from LD access model. Only | |
6eaa7fb5 L |
937 | leal foo@tlsldm(%ebx), %eax |
938 | call ___tls_get_addr@PLT | |
939 | or | |
940 | leal foo@tlsldm(%reg), %eax | |
941 | call *___tls_get_addr@GOT(%reg) | |
942 | which may be converted to | |
943 | addr32 call ___tls_get_addr | |
142411ca L |
944 | can transit to different access model. */ |
945 | if (type != 0x8d || (offset + 9) > sec->size) | |
946 | return FALSE; | |
947 | ||
6eaa7fb5 L |
948 | /* %eax can't be used as the GOT base register since it is |
949 | used to pass parameter to ___tls_get_addr. */ | |
950 | reg = val & 7; | |
951 | if ((val & 0xf8) != 0x80 || reg == 4 || reg == 0) | |
142411ca | 952 | return FALSE; |
142411ca | 953 | |
6eaa7fb5 L |
954 | indirect_call = call[0] == 0xff; |
955 | if (!(reg == 3 && call[0] == 0xe8) | |
956 | && !(call[0] == 0x67 && call[1] == 0xe8) | |
957 | && !(indirect_call | |
958 | && (call[1] & 0xf8) == 0x90 | |
959 | && (call[1] & 0x7) == reg)) | |
960 | return FALSE; | |
961 | } | |
142411ca L |
962 | |
963 | r_symndx = ELF32_R_SYM (rel[1].r_info); | |
964 | if (r_symndx < symtab_hdr->sh_info) | |
965 | return FALSE; | |
966 | ||
967 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1d4af308 | 968 | if (h == NULL |
0afcef53 | 969 | || !((struct elf_x86_link_hash_entry *) h)->tls_get_addr) |
6eaa7fb5 L |
970 | return FALSE; |
971 | else if (indirect_call) | |
972 | return (ELF32_R_TYPE (rel[1].r_info) == R_386_GOT32X); | |
973 | else | |
974 | return (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32 | |
975 | || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); | |
142411ca L |
976 | |
977 | case R_386_TLS_IE: | |
978 | /* Check transition from IE access model: | |
979 | movl foo@indntpoff(%rip), %eax | |
980 | movl foo@indntpoff(%rip), %reg | |
981 | addl foo@indntpoff(%rip), %reg | |
982 | */ | |
983 | ||
984 | if (offset < 1 || (offset + 4) > sec->size) | |
985 | return FALSE; | |
986 | ||
987 | /* Check "movl foo@tpoff(%rip), %eax" first. */ | |
988 | val = bfd_get_8 (abfd, contents + offset - 1); | |
989 | if (val == 0xa1) | |
990 | return TRUE; | |
991 | ||
992 | if (offset < 2) | |
993 | return FALSE; | |
994 | ||
995 | /* Check movl|addl foo@tpoff(%rip), %reg. */ | |
996 | type = bfd_get_8 (abfd, contents + offset - 2); | |
997 | return ((type == 0x8b || type == 0x03) | |
998 | && (val & 0xc7) == 0x05); | |
999 | ||
1000 | case R_386_TLS_GOTIE: | |
1001 | case R_386_TLS_IE_32: | |
1002 | /* Check transition from {IE_32,GOTIE} access model: | |
1003 | subl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1004 | movl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1005 | addl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1006 | */ | |
1007 | ||
1008 | if (offset < 2 || (offset + 4) > sec->size) | |
1009 | return FALSE; | |
1010 | ||
1011 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1012 | if ((val & 0xc0) != 0x80 || (val & 7) == 4) | |
1013 | return FALSE; | |
1014 | ||
1015 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1016 | return type == 0x8b || type == 0x2b || type == 0x03; | |
1017 | ||
1018 | case R_386_TLS_GOTDESC: | |
1019 | /* Check transition from GDesc access model: | |
1020 | leal x@tlsdesc(%ebx), %eax | |
1021 | ||
1022 | Make sure it's a leal adding ebx to a 32-bit offset | |
1023 | into any register, although it's probably almost always | |
1024 | going to be eax. */ | |
1025 | ||
1026 | if (offset < 2 || (offset + 4) > sec->size) | |
1027 | return FALSE; | |
1028 | ||
1029 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1030 | return FALSE; | |
1031 | ||
1032 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1033 | return (val & 0xc7) == 0x83; | |
1034 | ||
1035 | case R_386_TLS_DESC_CALL: | |
1036 | /* Check transition from GDesc access model: | |
6eaa7fb5 | 1037 | call *x@tlsdesc(%eax) |
142411ca L |
1038 | */ |
1039 | if (offset + 2 <= sec->size) | |
1040 | { | |
6eaa7fb5 L |
1041 | /* Make sure that it's a call *x@tlsdesc(%eax). */ |
1042 | call = contents + offset; | |
1043 | return call[0] == 0xff && call[1] == 0x10; | |
142411ca L |
1044 | } |
1045 | ||
1046 | return FALSE; | |
1047 | ||
1048 | default: | |
1049 | abort (); | |
1050 | } | |
1051 | } | |
1052 | ||
1053 | /* Return TRUE if the TLS access transition is OK or no transition | |
1054 | will be performed. Update R_TYPE if there is a transition. */ | |
1055 | ||
1056 | static bfd_boolean | |
1057 | elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd, | |
1058 | asection *sec, bfd_byte *contents, | |
1059 | Elf_Internal_Shdr *symtab_hdr, | |
1060 | struct elf_link_hash_entry **sym_hashes, | |
1061 | unsigned int *r_type, int tls_type, | |
1062 | const Elf_Internal_Rela *rel, | |
1063 | const Elf_Internal_Rela *relend, | |
4c544807 | 1064 | struct elf_link_hash_entry *h, |
bedfd056 L |
1065 | unsigned long r_symndx, |
1066 | bfd_boolean from_relocate_section) | |
142411ca L |
1067 | { |
1068 | unsigned int from_type = *r_type; | |
1069 | unsigned int to_type = from_type; | |
1070 | bfd_boolean check = TRUE; | |
1071 | ||
bb1cb422 L |
1072 | /* Skip TLS transition for functions. */ |
1073 | if (h != NULL | |
1074 | && (h->type == STT_FUNC | |
1075 | || h->type == STT_GNU_IFUNC)) | |
1076 | return TRUE; | |
1077 | ||
142411ca | 1078 | switch (from_type) |
13ae64f3 JJ |
1079 | { |
1080 | case R_386_TLS_GD: | |
67a4f2b7 AO |
1081 | case R_386_TLS_GOTDESC: |
1082 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 1083 | case R_386_TLS_IE_32: |
37e55690 JJ |
1084 | case R_386_TLS_IE: |
1085 | case R_386_TLS_GOTIE: | |
0e1862bb | 1086 | if (bfd_link_executable (info)) |
142411ca L |
1087 | { |
1088 | if (h == NULL) | |
1089 | to_type = R_386_TLS_LE_32; | |
1090 | else if (from_type != R_386_TLS_IE | |
1091 | && from_type != R_386_TLS_GOTIE) | |
1092 | to_type = R_386_TLS_IE_32; | |
1093 | } | |
1094 | ||
bedfd056 L |
1095 | /* When we are called from elf_i386_relocate_section, there may |
1096 | be additional transitions based on TLS_TYPE. */ | |
1097 | if (from_relocate_section) | |
142411ca L |
1098 | { |
1099 | unsigned int new_to_type = to_type; | |
1100 | ||
51537393 | 1101 | if (TLS_TRANSITION_IE_TO_LE_P (info, h, tls_type)) |
142411ca L |
1102 | new_to_type = R_386_TLS_LE_32; |
1103 | ||
1104 | if (to_type == R_386_TLS_GD | |
1105 | || to_type == R_386_TLS_GOTDESC | |
1106 | || to_type == R_386_TLS_DESC_CALL) | |
1107 | { | |
1108 | if (tls_type == GOT_TLS_IE_POS) | |
1109 | new_to_type = R_386_TLS_GOTIE; | |
1110 | else if (tls_type & GOT_TLS_IE) | |
1111 | new_to_type = R_386_TLS_IE_32; | |
1112 | } | |
1113 | ||
1114 | /* We checked the transition before when we were called from | |
1115 | elf_i386_check_relocs. We only want to check the new | |
1116 | transition which hasn't been checked before. */ | |
1117 | check = new_to_type != to_type && from_type == to_type; | |
1118 | to_type = new_to_type; | |
1119 | } | |
1120 | ||
1121 | break; | |
1122 | ||
13ae64f3 | 1123 | case R_386_TLS_LDM: |
0e1862bb | 1124 | if (bfd_link_executable (info)) |
142411ca L |
1125 | to_type = R_386_TLS_LE_32; |
1126 | break; | |
1127 | ||
1128 | default: | |
1129 | return TRUE; | |
1130 | } | |
1131 | ||
1132 | /* Return TRUE if there is no transition. */ | |
1133 | if (from_type == to_type) | |
1134 | return TRUE; | |
1135 | ||
1136 | /* Check if the transition can be performed. */ | |
1137 | if (check | |
bedfd056 | 1138 | && ! elf_i386_check_tls_transition (sec, contents, |
142411ca L |
1139 | symtab_hdr, sym_hashes, |
1140 | from_type, rel, relend)) | |
1141 | { | |
2f629d23 | 1142 | reloc_howto_type *from, *to; |
4c544807 | 1143 | const char *name; |
142411ca | 1144 | |
b366503e L |
1145 | from = elf_i386_rtype_to_howto (from_type); |
1146 | to = elf_i386_rtype_to_howto (to_type); | |
142411ca | 1147 | |
4c544807 L |
1148 | if (h) |
1149 | name = h->root.root.string; | |
1150 | else | |
1151 | { | |
0afcef53 | 1152 | struct elf_x86_link_hash_table *htab; |
4dfe6ac6 | 1153 | |
0afcef53 | 1154 | htab = elf_x86_hash_table (info, I386_ELF_DATA); |
4dfe6ac6 NC |
1155 | if (htab == NULL) |
1156 | name = "*unknown*"; | |
1157 | else | |
1158 | { | |
1159 | Elf_Internal_Sym *isym; | |
1160 | ||
f1dfbfdb | 1161 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
4dfe6ac6 NC |
1162 | abfd, r_symndx); |
1163 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1164 | } | |
4c544807 L |
1165 | } |
1166 | ||
4eca0228 | 1167 | _bfd_error_handler |
695344c0 | 1168 | /* xgettext:c-format */ |
2dcf00ce AM |
1169 | (_("%pB: TLS transition from %s to %s against `%s'" |
1170 | " at %#" PRIx64 " in section `%pA' failed"), | |
c08bb8dd | 1171 | abfd, from->name, to->name, name, |
2dcf00ce | 1172 | (uint64_t) rel->r_offset, sec); |
142411ca L |
1173 | bfd_set_error (bfd_error_bad_value); |
1174 | return FALSE; | |
13ae64f3 JJ |
1175 | } |
1176 | ||
142411ca L |
1177 | *r_type = to_type; |
1178 | return TRUE; | |
13ae64f3 JJ |
1179 | } |
1180 | ||
c175a657 L |
1181 | /* With the local symbol, foo, we convert |
1182 | mov foo@GOT[(%reg1)], %reg2 | |
1183 | to | |
1184 | lea foo[@GOTOFF(%reg1)], %reg2 | |
1185 | and convert | |
1186 | call/jmp *foo@GOT[(%reg)] | |
1187 | to | |
1188 | nop call foo/jmp foo nop | |
1189 | When PIC is false, convert | |
1190 | test %reg1, foo@GOT[(%reg2)] | |
1191 | to | |
1192 | test $foo, %reg1 | |
1193 | and convert | |
1194 | binop foo@GOT[(%reg1)], %reg2 | |
1195 | to | |
1196 | binop $foo, %reg2 | |
1197 | where binop is one of adc, add, and, cmp, or, sbb, sub, xor | |
1198 | instructions. */ | |
1199 | ||
1200 | static | |
1201 | bfd_boolean | |
1202 | elf_i386_convert_load_reloc (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, | |
1203 | bfd_byte *contents, | |
6999821f | 1204 | unsigned int *r_type_p, |
c175a657 L |
1205 | Elf_Internal_Rela *irel, |
1206 | struct elf_link_hash_entry *h, | |
5e5e02ae | 1207 | bfd_boolean *converted, |
c175a657 L |
1208 | struct bfd_link_info *link_info) |
1209 | { | |
0afcef53 | 1210 | struct elf_x86_link_hash_table *htab; |
c175a657 L |
1211 | unsigned int opcode; |
1212 | unsigned int modrm; | |
1213 | bfd_boolean baseless; | |
1214 | Elf_Internal_Sym *isym; | |
1215 | unsigned int addend; | |
1216 | unsigned int nop; | |
1217 | bfd_vma nop_offset; | |
1218 | bfd_boolean is_pic; | |
1219 | bfd_boolean to_reloc_32; | |
382aae06 | 1220 | bfd_boolean abs_symbol; |
c175a657 L |
1221 | unsigned int r_type; |
1222 | unsigned int r_symndx; | |
1223 | bfd_vma roff = irel->r_offset; | |
0a27fed7 L |
1224 | bfd_boolean local_ref; |
1225 | struct elf_x86_link_hash_entry *eh; | |
c175a657 L |
1226 | |
1227 | if (roff < 2) | |
1228 | return TRUE; | |
1229 | ||
7d4d9709 | 1230 | /* Addend for R_386_GOT32X relocations must be 0. */ |
c175a657 L |
1231 | addend = bfd_get_32 (abfd, contents + roff); |
1232 | if (addend != 0) | |
1233 | return TRUE; | |
1234 | ||
0afcef53 | 1235 | htab = elf_x86_hash_table (link_info, I386_ELF_DATA); |
c175a657 L |
1236 | is_pic = bfd_link_pic (link_info); |
1237 | ||
6999821f | 1238 | r_type = *r_type_p; |
c175a657 L |
1239 | r_symndx = ELF32_R_SYM (irel->r_info); |
1240 | ||
1241 | modrm = bfd_get_8 (abfd, contents + roff - 1); | |
1242 | baseless = (modrm & 0xc7) == 0x5; | |
1243 | ||
382aae06 L |
1244 | if (h) |
1245 | { | |
1246 | /* NB: Also set linker_def via SYMBOL_REFERENCES_LOCAL_P. */ | |
1247 | local_ref = SYMBOL_REFERENCES_LOCAL_P (link_info, h); | |
1248 | isym = NULL; | |
1249 | abs_symbol = ABS_SYMBOL_P (h); | |
1250 | } | |
1251 | else | |
1252 | { | |
1253 | local_ref = TRUE; | |
f1dfbfdb | 1254 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, abfd, |
382aae06 L |
1255 | r_symndx); |
1256 | abs_symbol = isym->st_shndx == SHN_ABS; | |
1257 | } | |
1258 | ||
7d4d9709 | 1259 | if (baseless && is_pic) |
c175a657 L |
1260 | { |
1261 | /* For PIC, disallow R_386_GOT32X without a base register | |
7d4d9709 | 1262 | since we don't know what the GOT base is. */ |
c175a657 L |
1263 | const char *name; |
1264 | ||
1265 | if (h == NULL) | |
382aae06 | 1266 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); |
c175a657 L |
1267 | else |
1268 | name = h->root.root.string; | |
1269 | ||
4eca0228 | 1270 | _bfd_error_handler |
695344c0 | 1271 | /* xgettext:c-format */ |
871b3ab2 | 1272 | (_("%pB: direct GOT relocation R_386_GOT32X against `%s' without base" |
63a5468a | 1273 | " register can not be used when making a shared object"), |
c175a657 L |
1274 | abfd, name); |
1275 | return FALSE; | |
1276 | } | |
1277 | ||
1278 | opcode = bfd_get_8 (abfd, contents + roff - 2); | |
1279 | ||
c175a657 L |
1280 | /* Convert to R_386_32 if PIC is false or there is no base |
1281 | register. */ | |
1282 | to_reloc_32 = !is_pic || baseless; | |
1283 | ||
0a27fed7 L |
1284 | eh = elf_x86_hash_entry (h); |
1285 | ||
7d4d9709 L |
1286 | /* Try to convert R_386_GOT32X. Get the symbol referred to by the |
1287 | reloc. */ | |
c175a657 L |
1288 | if (h == NULL) |
1289 | { | |
1290 | if (opcode == 0x0ff) | |
1291 | /* Convert "call/jmp *foo@GOT[(%reg)]". */ | |
1292 | goto convert_branch; | |
1293 | else | |
1294 | /* Convert "mov foo@GOT[(%reg1)], %reg2", | |
1295 | "test %reg1, foo@GOT(%reg2)" and | |
1296 | "binop foo@GOT[(%reg1)], %reg2". */ | |
1297 | goto convert_load; | |
1298 | } | |
1299 | ||
1300 | /* Undefined weak symbol is only bound locally in executable | |
1301 | and its reference is resolved as 0. */ | |
0a27fed7 L |
1302 | if (h->root.type == bfd_link_hash_undefweak |
1303 | && !eh->linker_def | |
1304 | && local_ref) | |
c175a657 L |
1305 | { |
1306 | if (opcode == 0xff) | |
1307 | { | |
1308 | /* No direct branch to 0 for PIC. */ | |
1309 | if (is_pic) | |
1310 | return TRUE; | |
1311 | else | |
1312 | goto convert_branch; | |
1313 | } | |
1314 | else | |
1315 | { | |
1316 | /* We can convert load of address 0 to R_386_32. */ | |
1317 | to_reloc_32 = TRUE; | |
1318 | goto convert_load; | |
1319 | } | |
1320 | } | |
1321 | ||
1322 | if (opcode == 0xff) | |
1323 | { | |
1324 | /* We have "call/jmp *foo@GOT[(%reg)]". */ | |
1325 | if ((h->root.type == bfd_link_hash_defined | |
1326 | || h->root.type == bfd_link_hash_defweak) | |
0a27fed7 | 1327 | && local_ref) |
c175a657 L |
1328 | { |
1329 | /* The function is locally defined. */ | |
dc1e8a47 | 1330 | convert_branch: |
c175a657 L |
1331 | /* Convert R_386_GOT32X to R_386_PC32. */ |
1332 | if (modrm == 0x15 || (modrm & 0xf8) == 0x90) | |
1333 | { | |
1334 | /* Convert to "nop call foo". ADDR_PREFIX_OPCODE | |
1335 | is a nop prefix. */ | |
1336 | modrm = 0xe8; | |
6eaa7fb5 L |
1337 | /* To support TLS optimization, always use addr32 prefix |
1338 | for "call *___tls_get_addr@GOT(%reg)". */ | |
1d4af308 | 1339 | if (eh && eh->tls_get_addr) |
c175a657 | 1340 | { |
6eaa7fb5 L |
1341 | nop = 0x67; |
1342 | nop_offset = irel->r_offset - 2; | |
c175a657 L |
1343 | } |
1344 | else | |
6eaa7fb5 | 1345 | { |
5b9c07b2 L |
1346 | nop = htab->params->call_nop_byte; |
1347 | if (htab->params->call_nop_as_suffix) | |
6eaa7fb5 L |
1348 | { |
1349 | nop_offset = roff + 3; | |
1350 | irel->r_offset -= 1; | |
1351 | } | |
1352 | else | |
1353 | nop_offset = roff - 2; | |
1354 | } | |
c175a657 L |
1355 | } |
1356 | else | |
1357 | { | |
1358 | /* Convert to "jmp foo nop". */ | |
1359 | modrm = 0xe9; | |
1360 | nop = NOP_OPCODE; | |
1361 | nop_offset = roff + 3; | |
1362 | irel->r_offset -= 1; | |
1363 | } | |
1364 | ||
1365 | bfd_put_8 (abfd, nop, contents + nop_offset); | |
1366 | bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1); | |
1367 | /* When converting to PC-relative relocation, we | |
1368 | need to adjust addend by -4. */ | |
1369 | bfd_put_32 (abfd, -4, contents + irel->r_offset); | |
1370 | irel->r_info = ELF32_R_INFO (r_symndx, R_386_PC32); | |
6999821f | 1371 | *r_type_p = R_386_PC32; |
5e5e02ae | 1372 | *converted = TRUE; |
c175a657 L |
1373 | } |
1374 | } | |
1375 | else | |
1376 | { | |
1377 | /* We have "mov foo@GOT[(%re1g)], %reg2", | |
1378 | "test %reg1, foo@GOT(%reg2)" and | |
1379 | "binop foo@GOT[(%reg1)], %reg2". | |
1380 | ||
1381 | Avoid optimizing _DYNAMIC since ld.so may use its | |
1382 | link-time address. */ | |
1383 | if (h == htab->elf.hdynamic) | |
1384 | return TRUE; | |
1385 | ||
1386 | /* def_regular is set by an assignment in a linker script in | |
cbd0eecf L |
1387 | bfd_elf_record_link_assignment. start_stop is set on |
1388 | __start_SECNAME/__stop_SECNAME which mark section SECNAME. */ | |
1389 | if (h->start_stop | |
0a27fed7 | 1390 | || eh->linker_def |
cbd0eecf L |
1391 | || ((h->def_regular |
1392 | || h->root.type == bfd_link_hash_defined | |
1393 | || h->root.type == bfd_link_hash_defweak) | |
0a27fed7 | 1394 | && local_ref)) |
c175a657 | 1395 | { |
dc1e8a47 | 1396 | convert_load: |
c175a657 L |
1397 | if (opcode == 0x8b) |
1398 | { | |
382aae06 L |
1399 | if (abs_symbol && local_ref) |
1400 | to_reloc_32 = TRUE; | |
1401 | ||
c175a657 L |
1402 | if (to_reloc_32) |
1403 | { | |
1404 | /* Convert "mov foo@GOT[(%reg1)], %reg2" to | |
1405 | "mov $foo, %reg2" with R_386_32. */ | |
1406 | r_type = R_386_32; | |
1407 | modrm = 0xc0 | (modrm & 0x38) >> 3; | |
1408 | bfd_put_8 (abfd, modrm, contents + roff - 1); | |
1409 | opcode = 0xc7; | |
1410 | } | |
1411 | else | |
1412 | { | |
1413 | /* Convert "mov foo@GOT(%reg1), %reg2" to | |
1414 | "lea foo@GOTOFF(%reg1), %reg2". */ | |
1415 | r_type = R_386_GOTOFF; | |
1416 | opcode = 0x8d; | |
1417 | } | |
1418 | } | |
1419 | else | |
1420 | { | |
1421 | /* Only R_386_32 is supported. */ | |
1422 | if (!to_reloc_32) | |
1423 | return TRUE; | |
1424 | ||
1425 | if (opcode == 0x85) | |
1426 | { | |
1427 | /* Convert "test %reg1, foo@GOT(%reg2)" to | |
1428 | "test $foo, %reg1". */ | |
1429 | modrm = 0xc0 | (modrm & 0x38) >> 3; | |
1430 | opcode = 0xf7; | |
1431 | } | |
1432 | else | |
1433 | { | |
1434 | /* Convert "binop foo@GOT(%reg1), %reg2" to | |
1435 | "binop $foo, %reg2". */ | |
1436 | modrm = (0xc0 | |
1437 | | (modrm & 0x38) >> 3 | |
1438 | | (opcode & 0x3c)); | |
1439 | opcode = 0x81; | |
1440 | } | |
1441 | bfd_put_8 (abfd, modrm, contents + roff - 1); | |
1442 | r_type = R_386_32; | |
1443 | } | |
1444 | ||
1445 | bfd_put_8 (abfd, opcode, contents + roff - 2); | |
1446 | irel->r_info = ELF32_R_INFO (r_symndx, r_type); | |
6999821f | 1447 | *r_type_p = r_type; |
5e5e02ae | 1448 | *converted = TRUE; |
c175a657 L |
1449 | } |
1450 | } | |
1451 | ||
1452 | return TRUE; | |
1453 | } | |
1454 | ||
c1d11331 L |
1455 | /* Rename some of the generic section flags to better document how they |
1456 | are used here. */ | |
6999821f | 1457 | #define check_relocs_failed sec_flg0 |
c1d11331 | 1458 | |
252b5132 | 1459 | /* Look through the relocs for a section during the first phase, and |
0ac8d2ca AM |
1460 | calculate needed space in the global offset table, procedure linkage |
1461 | table, and dynamic reloc sections. */ | |
252b5132 | 1462 | |
b34976b6 | 1463 | static bfd_boolean |
55fd94b0 AM |
1464 | elf_i386_check_relocs (bfd *abfd, |
1465 | struct bfd_link_info *info, | |
1466 | asection *sec, | |
1467 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1468 | { |
0afcef53 | 1469 | struct elf_x86_link_hash_table *htab; |
252b5132 RH |
1470 | Elf_Internal_Shdr *symtab_hdr; |
1471 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
1472 | const Elf_Internal_Rela *rel; |
1473 | const Elf_Internal_Rela *rel_end; | |
252b5132 | 1474 | asection *sreloc; |
bedfd056 | 1475 | bfd_byte *contents; |
5e5e02ae | 1476 | bfd_boolean converted; |
252b5132 | 1477 | |
0e1862bb | 1478 | if (bfd_link_relocatable (info)) |
b34976b6 | 1479 | return TRUE; |
252b5132 | 1480 | |
0afcef53 | 1481 | htab = elf_x86_hash_table (info, I386_ELF_DATA); |
4dfe6ac6 | 1482 | if (htab == NULL) |
c337a162 L |
1483 | { |
1484 | sec->check_relocs_failed = 1; | |
1485 | return FALSE; | |
1486 | } | |
4dfe6ac6 | 1487 | |
fe53b4a4 L |
1488 | BFD_ASSERT (is_x86_elf (abfd, htab)); |
1489 | ||
bedfd056 L |
1490 | /* Get the section contents. */ |
1491 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1492 | contents = elf_section_data (sec)->this_hdr.contents; | |
1493 | else if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1494 | { | |
1495 | sec->check_relocs_failed = 1; | |
1496 | return FALSE; | |
1497 | } | |
1498 | ||
0ffa91dd | 1499 | symtab_hdr = &elf_symtab_hdr (abfd); |
252b5132 | 1500 | sym_hashes = elf_sym_hashes (abfd); |
252b5132 | 1501 | |
5e5e02ae L |
1502 | converted = FALSE; |
1503 | ||
252b5132 RH |
1504 | sreloc = NULL; |
1505 | ||
1506 | rel_end = relocs + sec->reloc_count; | |
1507 | for (rel = relocs; rel < rel_end; rel++) | |
1508 | { | |
13ae64f3 | 1509 | unsigned int r_type; |
d42c267e | 1510 | unsigned int r_symndx; |
252b5132 | 1511 | struct elf_link_hash_entry *h; |
0afcef53 | 1512 | struct elf_x86_link_hash_entry *eh; |
4c544807 L |
1513 | Elf_Internal_Sym *isym; |
1514 | const char *name; | |
06a6a421 | 1515 | bfd_boolean size_reloc; |
382aae06 | 1516 | bfd_boolean no_dynreloc; |
252b5132 RH |
1517 | |
1518 | r_symndx = ELF32_R_SYM (rel->r_info); | |
13ae64f3 | 1519 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 1520 | |
d9bc7a44 | 1521 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
f5f31454 | 1522 | { |
695344c0 | 1523 | /* xgettext:c-format */ |
871b3ab2 | 1524 | _bfd_error_handler (_("%pB: bad symbol index: %d"), |
4eca0228 | 1525 | abfd, r_symndx); |
c337a162 | 1526 | goto error_return; |
f5f31454 L |
1527 | } |
1528 | ||
252b5132 | 1529 | if (r_symndx < symtab_hdr->sh_info) |
c25bc9fc L |
1530 | { |
1531 | /* A local symbol. */ | |
f1dfbfdb | 1532 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
c2e61a4e L |
1533 | abfd, r_symndx); |
1534 | if (isym == NULL) | |
c337a162 | 1535 | goto error_return; |
c25bc9fc L |
1536 | |
1537 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
c25bc9fc L |
1538 | if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
1539 | { | |
0afcef53 | 1540 | h = _bfd_elf_x86_get_local_sym_hash (htab, abfd, rel, TRUE); |
c25bc9fc | 1541 | if (h == NULL) |
c337a162 | 1542 | goto error_return; |
6bbec505 | 1543 | |
c25bc9fc | 1544 | /* Fake a STT_GNU_IFUNC symbol. */ |
6322e5c5 L |
1545 | h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr, |
1546 | isym, NULL); | |
c25bc9fc L |
1547 | h->type = STT_GNU_IFUNC; |
1548 | h->def_regular = 1; | |
1549 | h->ref_regular = 1; | |
1550 | h->forced_local = 1; | |
1551 | h->root.type = bfd_link_hash_defined; | |
1552 | } | |
1553 | else | |
1554 | h = NULL; | |
1555 | } | |
252b5132 | 1556 | else |
71cb9464 | 1557 | { |
4c544807 | 1558 | isym = NULL; |
71cb9464 L |
1559 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1560 | while (h->root.type == bfd_link_hash_indirect | |
1561 | || h->root.type == bfd_link_hash_warning) | |
1562 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c25bc9fc | 1563 | } |
cbe950e9 | 1564 | |
0afcef53 | 1565 | eh = (struct elf_x86_link_hash_entry *) h; |
c25bc9fc L |
1566 | if (h != NULL) |
1567 | { | |
f604c2a2 L |
1568 | if (r_type == R_386_GOTOFF) |
1569 | eh->gotoff_ref = 1; | |
cbe950e9 | 1570 | |
ad1e85de L |
1571 | /* It is referenced by a non-shared object. */ |
1572 | h->ref_regular = 1; | |
71cb9464 | 1573 | } |
252b5132 | 1574 | |
6999821f L |
1575 | if (r_type == R_386_GOT32X |
1576 | && (h == NULL || h->type != STT_GNU_IFUNC)) | |
1577 | { | |
1578 | Elf_Internal_Rela *irel = (Elf_Internal_Rela *) rel; | |
1579 | if (!elf_i386_convert_load_reloc (abfd, symtab_hdr, contents, | |
5e5e02ae L |
1580 | &r_type, irel, h, |
1581 | &converted, info)) | |
6999821f L |
1582 | goto error_return; |
1583 | } | |
1584 | ||
382aae06 L |
1585 | if (!_bfd_elf_x86_valid_reloc_p (sec, info, htab, rel, h, isym, |
1586 | symtab_hdr, &no_dynreloc)) | |
1587 | return FALSE; | |
1588 | ||
bedfd056 | 1589 | if (! elf_i386_tls_transition (info, abfd, sec, contents, |
142411ca L |
1590 | symtab_hdr, sym_hashes, |
1591 | &r_type, GOT_UNKNOWN, | |
bedfd056 | 1592 | rel, rel_end, h, r_symndx, FALSE)) |
c337a162 | 1593 | goto error_return; |
13ae64f3 | 1594 | |
cd048363 L |
1595 | /* Check if _GLOBAL_OFFSET_TABLE_ is referenced. */ |
1596 | if (h == htab->elf.hgot) | |
1597 | htab->got_referenced = TRUE; | |
1598 | ||
13ae64f3 | 1599 | switch (r_type) |
252b5132 | 1600 | { |
37e55690 | 1601 | case R_386_TLS_LDM: |
0f09b4d8 | 1602 | htab->tls_ld_or_ldm_got.refcount = 1; |
37e55690 JJ |
1603 | goto create_got; |
1604 | ||
1605 | case R_386_PLT32: | |
1606 | /* This symbol requires a procedure linkage table entry. We | |
1607 | actually build the entry in adjust_dynamic_symbol, | |
1608 | because this might be a case of linking PIC code which is | |
1609 | never referenced by a dynamic object, in which case we | |
1610 | don't need to generate a procedure linkage table entry | |
1611 | after all. */ | |
1612 | ||
1613 | /* If this is a local symbol, we resolve it directly without | |
1614 | creating a procedure linkage table entry. */ | |
1615 | if (h == NULL) | |
1616 | continue; | |
1617 | ||
98b273dc | 1618 | eh->zero_undefweak &= 0x2; |
f5385ebf | 1619 | h->needs_plt = 1; |
79b0c981 | 1620 | h->plt.refcount = 1; |
37e55690 JJ |
1621 | break; |
1622 | ||
6a3e1bae | 1623 | case R_386_SIZE32: |
06a6a421 | 1624 | size_reloc = TRUE; |
6a3e1bae L |
1625 | goto do_size; |
1626 | ||
13ae64f3 | 1627 | case R_386_TLS_IE_32: |
37e55690 JJ |
1628 | case R_386_TLS_IE: |
1629 | case R_386_TLS_GOTIE: | |
0e1862bb | 1630 | if (!bfd_link_executable (info)) |
13ae64f3 | 1631 | info->flags |= DF_STATIC_TLS; |
37e55690 JJ |
1632 | /* Fall through */ |
1633 | ||
252b5132 | 1634 | case R_386_GOT32: |
02a86693 | 1635 | case R_386_GOT32X: |
13ae64f3 | 1636 | case R_386_TLS_GD: |
67a4f2b7 AO |
1637 | case R_386_TLS_GOTDESC: |
1638 | case R_386_TLS_DESC_CALL: | |
252b5132 | 1639 | /* This symbol requires a global offset table entry. */ |
13ae64f3 JJ |
1640 | { |
1641 | int tls_type, old_tls_type; | |
1642 | ||
1643 | switch (r_type) | |
1644 | { | |
1645 | default: | |
02a86693 L |
1646 | case R_386_GOT32: |
1647 | case R_386_GOT32X: | |
1648 | tls_type = GOT_NORMAL; | |
1649 | break; | |
13ae64f3 | 1650 | case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; |
67a4f2b7 AO |
1651 | case R_386_TLS_GOTDESC: |
1652 | case R_386_TLS_DESC_CALL: | |
1653 | tls_type = GOT_TLS_GDESC; break; | |
37e55690 JJ |
1654 | case R_386_TLS_IE_32: |
1655 | if (ELF32_R_TYPE (rel->r_info) == r_type) | |
1656 | tls_type = GOT_TLS_IE_NEG; | |
1657 | else | |
ebcfb3c0 JJ |
1658 | /* If this is a GD->IE transition, we may use either of |
1659 | R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ | |
37e55690 JJ |
1660 | tls_type = GOT_TLS_IE; |
1661 | break; | |
1662 | case R_386_TLS_IE: | |
1663 | case R_386_TLS_GOTIE: | |
1664 | tls_type = GOT_TLS_IE_POS; break; | |
13ae64f3 JJ |
1665 | } |
1666 | ||
1667 | if (h != NULL) | |
1668 | { | |
0f09b4d8 | 1669 | h->got.refcount = 1; |
0afcef53 | 1670 | old_tls_type = elf_x86_hash_entry (h)->tls_type; |
13ae64f3 JJ |
1671 | } |
1672 | else | |
1673 | { | |
1674 | bfd_signed_vma *local_got_refcounts; | |
1675 | ||
1676 | /* This is a global offset table entry for a local symbol. */ | |
1677 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1678 | if (local_got_refcounts == NULL) | |
1679 | { | |
1680 | bfd_size_type size; | |
1681 | ||
1682 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
1683 | size *= (sizeof (bfd_signed_vma) |
1684 | + sizeof (bfd_vma) + sizeof(char)); | |
a50b1753 | 1685 | local_got_refcounts = (bfd_signed_vma *) |
07d6d2b8 | 1686 | bfd_zalloc (abfd, size); |
13ae64f3 | 1687 | if (local_got_refcounts == NULL) |
c337a162 | 1688 | goto error_return; |
13ae64f3 | 1689 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
0afcef53 | 1690 | elf_x86_local_tlsdesc_gotent (abfd) |
67a4f2b7 | 1691 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); |
0afcef53 | 1692 | elf_x86_local_got_tls_type (abfd) |
67a4f2b7 | 1693 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
13ae64f3 | 1694 | } |
0f09b4d8 | 1695 | local_got_refcounts[r_symndx] = 1; |
0afcef53 | 1696 | old_tls_type = elf_x86_local_got_tls_type (abfd) [r_symndx]; |
13ae64f3 JJ |
1697 | } |
1698 | ||
37e55690 JJ |
1699 | if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) |
1700 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1701 | /* If a TLS symbol is accessed using IE at least once, |
1702 | there is no point to use dynamic model for it. */ | |
ebcfb3c0 | 1703 | else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
67a4f2b7 | 1704 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
37e55690 | 1705 | || (tls_type & GOT_TLS_IE) == 0)) |
13ae64f3 | 1706 | { |
67a4f2b7 | 1707 | if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type)) |
37e55690 | 1708 | tls_type = old_tls_type; |
67a4f2b7 AO |
1709 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
1710 | && GOT_TLS_GD_ANY_P (tls_type)) | |
1711 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1712 | else |
1713 | { | |
09a24cbf | 1714 | if (h) |
4c544807 L |
1715 | name = h->root.root.string; |
1716 | else | |
1717 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1718 | NULL); | |
4eca0228 | 1719 | _bfd_error_handler |
695344c0 | 1720 | /* xgettext:c-format */ |
871b3ab2 | 1721 | (_("%pB: `%s' accessed both as normal and " |
55fd94b0 | 1722 | "thread local symbol"), |
4c544807 | 1723 | abfd, name); |
68c4a57e | 1724 | bfd_set_error (bfd_error_bad_value); |
c337a162 | 1725 | goto error_return; |
13ae64f3 JJ |
1726 | } |
1727 | } | |
1728 | ||
1729 | if (old_tls_type != tls_type) | |
1730 | { | |
1731 | if (h != NULL) | |
0afcef53 | 1732 | elf_x86_hash_entry (h)->tls_type = tls_type; |
13ae64f3 | 1733 | else |
0afcef53 | 1734 | elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type; |
13ae64f3 JJ |
1735 | } |
1736 | } | |
0ac8d2ca AM |
1737 | /* Fall through */ |
1738 | ||
1739 | case R_386_GOTOFF: | |
1740 | case R_386_GOTPC: | |
dc1e8a47 | 1741 | create_got: |
37e55690 | 1742 | if (r_type != R_386_TLS_IE) |
aec6b87e L |
1743 | { |
1744 | if (eh != NULL) | |
cd048363 L |
1745 | { |
1746 | eh->zero_undefweak &= 0x2; | |
1747 | ||
1748 | /* Need GOT to resolve undefined weak symbol to 0. */ | |
1749 | if (r_type == R_386_GOTOFF | |
1750 | && h->root.type == bfd_link_hash_undefweak | |
1751 | && bfd_link_executable (info)) | |
1752 | htab->got_referenced = TRUE; | |
1753 | } | |
aec6b87e L |
1754 | break; |
1755 | } | |
37e55690 | 1756 | /* Fall through */ |
252b5132 | 1757 | |
37e55690 JJ |
1758 | case R_386_TLS_LE_32: |
1759 | case R_386_TLS_LE: | |
aec6b87e | 1760 | if (eh != NULL) |
98b273dc | 1761 | eh->zero_undefweak &= 0x2; |
0e1862bb | 1762 | if (bfd_link_executable (info)) |
37e55690 | 1763 | break; |
bffbf940 | 1764 | info->flags |= DF_STATIC_TLS; |
aec6b87e | 1765 | goto do_relocation; |
252b5132 RH |
1766 | |
1767 | case R_386_32: | |
1768 | case R_386_PC32: | |
aec6b87e | 1769 | if (eh != NULL && (sec->flags & SEC_CODE) != 0) |
98b273dc | 1770 | eh->zero_undefweak |= 0x2; |
dc1e8a47 | 1771 | do_relocation: |
bf52d7c7 L |
1772 | /* We are called after all symbols have been resolved. Only |
1773 | relocation against STT_GNU_IFUNC symbol must go through | |
1774 | PLT. */ | |
d1ed1c7d L |
1775 | if (h != NULL |
1776 | && (bfd_link_executable (info) | |
bf52d7c7 | 1777 | || h->type == STT_GNU_IFUNC)) |
6725bdbf | 1778 | { |
79b0c981 | 1779 | bfd_boolean func_pointer_ref = FALSE; |
233cc9c1 | 1780 | |
4b627c18 L |
1781 | if (r_type == R_386_PC32) |
1782 | { | |
1783 | /* Since something like ".long foo - ." may be used | |
1784 | as pointer, make sure that PLT is used if foo is | |
1785 | a function defined in a shared library. */ | |
1786 | if ((sec->flags & SEC_CODE) == 0) | |
1787 | h->pointer_equality_needed = 1; | |
74437ea2 L |
1788 | else if (h->type == STT_GNU_IFUNC |
1789 | && bfd_link_pic (info)) | |
1790 | { | |
6322e5c5 L |
1791 | _bfd_error_handler |
1792 | /* xgettext:c-format */ | |
871b3ab2 | 1793 | (_("%pB: unsupported non-PIC call to IFUNC `%s'"), |
6322e5c5 | 1794 | abfd, h->root.root.string); |
74437ea2 L |
1795 | bfd_set_error (bfd_error_bad_value); |
1796 | goto error_return; | |
1797 | } | |
4b627c18 L |
1798 | } |
1799 | else | |
04ebc307 L |
1800 | { |
1801 | h->pointer_equality_needed = 1; | |
1802 | /* R_386_32 can be resolved at run-time. */ | |
1803 | if (r_type == R_386_32 | |
1804 | && (sec->flags & SEC_READONLY) == 0) | |
79b0c981 L |
1805 | func_pointer_ref = TRUE; |
1806 | } | |
1807 | ||
1808 | if (!func_pointer_ref) | |
1809 | { | |
1810 | /* If this reloc is in a read-only section, we might | |
1811 | need a copy reloc. We can't check reliably at this | |
1812 | stage whether the section is read-only, as input | |
1813 | sections have not yet been mapped to output sections. | |
1814 | Tentatively set the flag for now, and correct in | |
1815 | adjust_dynamic_symbol. */ | |
1816 | h->non_got_ref = 1; | |
1817 | ||
1818 | /* We may need a .plt entry if the symbol is a function | |
1819 | defined in a shared lib or is a function referenced | |
1820 | from the code or read-only section. */ | |
1821 | if (!h->def_regular | |
1822 | || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0) | |
1823 | h->plt.refcount = 1; | |
04ebc307 | 1824 | } |
6725bdbf | 1825 | } |
7843f00e | 1826 | |
06a6a421 | 1827 | size_reloc = FALSE; |
dc1e8a47 | 1828 | do_size: |
382aae06 L |
1829 | if (!no_dynreloc |
1830 | && NEED_DYNAMIC_RELOCATION_P (info, FALSE, h, sec, r_type, | |
1831 | R_386_32)) | |
252b5132 | 1832 | { |
e03a8ed8 L |
1833 | struct elf_dyn_relocs *p; |
1834 | struct elf_dyn_relocs **head; | |
ec338859 | 1835 | |
12d0ee4a AM |
1836 | /* We must copy these reloc types into the output file. |
1837 | Create a reloc section in dynobj and make room for | |
1838 | this reloc. */ | |
252b5132 RH |
1839 | if (sreloc == NULL) |
1840 | { | |
83bac4b0 NC |
1841 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1842 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE); | |
1843 | ||
252b5132 | 1844 | if (sreloc == NULL) |
c337a162 | 1845 | goto error_return; |
252b5132 RH |
1846 | } |
1847 | ||
0c715baa AM |
1848 | /* If this is a global symbol, we count the number of |
1849 | relocations we need for this symbol. */ | |
1850 | if (h != NULL) | |
252b5132 | 1851 | { |
190eb1dd | 1852 | head = &h->dyn_relocs; |
0c715baa AM |
1853 | } |
1854 | else | |
1855 | { | |
ec338859 AM |
1856 | /* Track dynamic relocs needed for local syms too. |
1857 | We really need local syms available to do this | |
1858 | easily. Oh well. */ | |
87d72d41 | 1859 | void **vpp; |
ec338859 | 1860 | asection *s; |
87d72d41 | 1861 | |
f1dfbfdb | 1862 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
87d72d41 AM |
1863 | abfd, r_symndx); |
1864 | if (isym == NULL) | |
c337a162 | 1865 | goto error_return; |
87d72d41 AM |
1866 | |
1867 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
ec338859 | 1868 | if (s == NULL) |
87d72d41 | 1869 | s = sec; |
ec338859 | 1870 | |
e81d3500 | 1871 | vpp = &elf_section_data (s)->local_dynrel; |
e03a8ed8 | 1872 | head = (struct elf_dyn_relocs **)vpp; |
ec338859 AM |
1873 | } |
1874 | ||
1875 | p = *head; | |
1876 | if (p == NULL || p->sec != sec) | |
1877 | { | |
986f0783 | 1878 | size_t amt = sizeof *p; |
a50b1753 | 1879 | p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj, |
07d6d2b8 | 1880 | amt); |
ec338859 | 1881 | if (p == NULL) |
c337a162 | 1882 | goto error_return; |
ec338859 AM |
1883 | p->next = *head; |
1884 | *head = p; | |
1885 | p->sec = sec; | |
1886 | p->count = 0; | |
1887 | p->pc_count = 0; | |
252b5132 | 1888 | } |
ec338859 AM |
1889 | |
1890 | p->count += 1; | |
06a6a421 L |
1891 | /* Count size relocation as PC-relative relocation. */ |
1892 | if (r_type == R_386_PC32 || size_reloc) | |
ec338859 | 1893 | p->pc_count += 1; |
252b5132 | 1894 | } |
252b5132 RH |
1895 | break; |
1896 | ||
1897 | /* This relocation describes the C++ object vtable hierarchy. | |
1898 | Reconstruct it for later use during GC. */ | |
1899 | case R_386_GNU_VTINHERIT: | |
d17e0c6e | 1900 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
c337a162 | 1901 | goto error_return; |
252b5132 RH |
1902 | break; |
1903 | ||
1904 | /* This relocation describes which C++ vtable entries are actually | |
1905 | used. Record for later use during GC. */ | |
1906 | case R_386_GNU_VTENTRY: | |
a0ea3a14 | 1907 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) |
c337a162 | 1908 | goto error_return; |
252b5132 RH |
1909 | break; |
1910 | ||
1911 | default: | |
1912 | break; | |
1913 | } | |
1914 | } | |
1915 | ||
bedfd056 L |
1916 | if (elf_section_data (sec)->this_hdr.contents != contents) |
1917 | { | |
5e5e02ae | 1918 | if (!converted && !info->keep_memory) |
bedfd056 L |
1919 | free (contents); |
1920 | else | |
1921 | { | |
5e5e02ae L |
1922 | /* Cache the section contents for elf_link_input_bfd if any |
1923 | load is converted or --no-keep-memory isn't used. */ | |
bedfd056 L |
1924 | elf_section_data (sec)->this_hdr.contents = contents; |
1925 | } | |
1926 | } | |
1927 | ||
5e5e02ae L |
1928 | /* Cache relocations if any load is converted. */ |
1929 | if (elf_section_data (sec)->relocs != relocs && converted) | |
1930 | elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs; | |
1931 | ||
b34976b6 | 1932 | return TRUE; |
c337a162 | 1933 | |
dc1e8a47 | 1934 | error_return: |
bedfd056 L |
1935 | if (elf_section_data (sec)->this_hdr.contents != contents) |
1936 | free (contents); | |
c337a162 L |
1937 | sec->check_relocs_failed = 1; |
1938 | return FALSE; | |
252b5132 RH |
1939 | } |
1940 | ||
38701953 AM |
1941 | /* Set the correct type for an x86 ELF section. We do this by the |
1942 | section name, which is a hack, but ought to work. */ | |
1943 | ||
b34976b6 | 1944 | static bfd_boolean |
55fd94b0 AM |
1945 | elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
1946 | Elf_Internal_Shdr *hdr, | |
1947 | asection *sec) | |
38701953 | 1948 | { |
91d6fa6a | 1949 | const char *name; |
38701953 | 1950 | |
fd361982 | 1951 | name = bfd_section_name (sec); |
38701953 AM |
1952 | |
1953 | /* This is an ugly, but unfortunately necessary hack that is | |
1954 | needed when producing EFI binaries on x86. It tells | |
1955 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
1956 | containing ELF relocation info. We need this hack in order to | |
1957 | be able to generate ELF binaries that can be translated into | |
1958 | EFI applications (which are essentially COFF objects). Those | |
1959 | files contain a COFF ".reloc" section inside an ELFNN object, | |
1960 | which would normally cause BFD to segfault because it would | |
1961 | attempt to interpret this section as containing relocation | |
1962 | entries for section "oc". With this hack enabled, ".reloc" | |
1963 | will be treated as a normal data section, which will avoid the | |
1964 | segfault. However, you won't be able to create an ELFNN binary | |
1965 | with a section named "oc" that needs relocations, but that's | |
1966 | the kind of ugly side-effects you get when detecting section | |
1967 | types based on their names... In practice, this limitation is | |
1968 | unlikely to bite. */ | |
1969 | if (strcmp (name, ".reloc") == 0) | |
1970 | hdr->sh_type = SHT_PROGBITS; | |
1971 | ||
b34976b6 | 1972 | return TRUE; |
38701953 AM |
1973 | } |
1974 | ||
13ae64f3 JJ |
1975 | /* Return the relocation value for @tpoff relocation |
1976 | if STT_TLS virtual address is ADDRESS. */ | |
1977 | ||
1978 | static bfd_vma | |
eb4ff4d6 | 1979 | elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address) |
13ae64f3 | 1980 | { |
e1918d23 | 1981 | struct elf_link_hash_table *htab = elf_hash_table (info); |
7dc98aea RO |
1982 | const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd); |
1983 | bfd_vma static_tls_size; | |
13ae64f3 | 1984 | |
e1918d23 AM |
1985 | /* If tls_sec is NULL, we should have signalled an error already. */ |
1986 | if (htab->tls_sec == NULL) | |
6a30718d | 1987 | return 0; |
7dc98aea RO |
1988 | |
1989 | /* Consider special static TLS alignment requirements. */ | |
1990 | static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment); | |
1991 | return static_tls_size + htab->tls_sec->vma - address; | |
13ae64f3 JJ |
1992 | } |
1993 | ||
252b5132 RH |
1994 | /* Relocate an i386 ELF section. */ |
1995 | ||
0f684201 | 1996 | static int |
55fd94b0 AM |
1997 | elf_i386_relocate_section (bfd *output_bfd, |
1998 | struct bfd_link_info *info, | |
1999 | bfd *input_bfd, | |
2000 | asection *input_section, | |
2001 | bfd_byte *contents, | |
2002 | Elf_Internal_Rela *relocs, | |
2003 | Elf_Internal_Sym *local_syms, | |
2004 | asection **local_sections) | |
252b5132 | 2005 | { |
0afcef53 | 2006 | struct elf_x86_link_hash_table *htab; |
252b5132 RH |
2007 | Elf_Internal_Shdr *symtab_hdr; |
2008 | struct elf_link_hash_entry **sym_hashes; | |
2009 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 2010 | bfd_vma *local_tlsdesc_gotents; |
252b5132 | 2011 | Elf_Internal_Rela *rel; |
60f2e42e | 2012 | Elf_Internal_Rela *wrel; |
252b5132 | 2013 | Elf_Internal_Rela *relend; |
3348747a | 2014 | bfd_boolean is_vxworks_tls; |
25e762b9 | 2015 | unsigned plt_entry_size; |
252b5132 | 2016 | |
c337a162 L |
2017 | /* Skip if check_relocs failed. */ |
2018 | if (input_section->check_relocs_failed) | |
2019 | return FALSE; | |
2020 | ||
0afcef53 | 2021 | htab = elf_x86_hash_table (info, I386_ELF_DATA); |
4dfe6ac6 NC |
2022 | if (htab == NULL) |
2023 | return FALSE; | |
fe53b4a4 | 2024 | |
7af5d5c4 AM |
2025 | if (!is_x86_elf (input_bfd, htab)) |
2026 | { | |
2027 | bfd_set_error (bfd_error_wrong_format); | |
2028 | return FALSE; | |
2029 | } | |
fe53b4a4 | 2030 | |
0ffa91dd | 2031 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
252b5132 RH |
2032 | sym_hashes = elf_sym_hashes (input_bfd); |
2033 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
0afcef53 | 2034 | local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd); |
3348747a NS |
2035 | /* We have to handle relocations in vxworks .tls_vars sections |
2036 | specially, because the dynamic loader is 'weird'. */ | |
90c14f0c | 2037 | is_vxworks_tls = (htab->elf.target_os == is_vxworks |
07d6d2b8 | 2038 | && bfd_link_pic (info) |
3348747a NS |
2039 | && !strcmp (input_section->output_section->name, |
2040 | ".tls_vars")); | |
252b5132 | 2041 | |
0afcef53 | 2042 | _bfd_x86_elf_set_tls_module_base (info); |
9f03412a | 2043 | |
765e526c | 2044 | plt_entry_size = htab->plt.plt_entry_size; |
25e762b9 | 2045 | |
60f2e42e | 2046 | rel = wrel = relocs; |
252b5132 | 2047 | relend = relocs + input_section->reloc_count; |
60f2e42e | 2048 | for (; rel < relend; wrel++, rel++) |
252b5132 | 2049 | { |
419414ea | 2050 | unsigned int r_type, r_type_tls; |
252b5132 RH |
2051 | reloc_howto_type *howto; |
2052 | unsigned long r_symndx; | |
2053 | struct elf_link_hash_entry *h; | |
0afcef53 | 2054 | struct elf_x86_link_hash_entry *eh; |
252b5132 RH |
2055 | Elf_Internal_Sym *sym; |
2056 | asection *sec; | |
dd7e64d4 | 2057 | bfd_vma off, offplt, plt_offset; |
252b5132 | 2058 | bfd_vma relocation; |
b34976b6 | 2059 | bfd_boolean unresolved_reloc; |
252b5132 | 2060 | bfd_reloc_status_type r; |
1b452ec6 | 2061 | unsigned int indx; |
13ae64f3 | 2062 | int tls_type; |
1788fc08 | 2063 | bfd_vma st_size; |
dd7e64d4 | 2064 | asection *resolved_plt; |
aec6b87e | 2065 | bfd_boolean resolved_to_zero; |
e133d005 | 2066 | bfd_boolean relative_reloc; |
252b5132 RH |
2067 | |
2068 | r_type = ELF32_R_TYPE (rel->r_info); | |
55fd94b0 AM |
2069 | if (r_type == R_386_GNU_VTINHERIT |
2070 | || r_type == R_386_GNU_VTENTRY) | |
18954b29 L |
2071 | { |
2072 | if (wrel != rel) | |
2073 | *wrel = *rel; | |
2074 | continue; | |
2075 | } | |
dc47f327 | 2076 | |
b366503e | 2077 | howto = elf_i386_rtype_to_howto (r_type); |
76268e02 | 2078 | if (howto == NULL) |
47aeb64c NC |
2079 | return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); |
2080 | ||
252b5132 | 2081 | r_symndx = ELF32_R_SYM (rel->r_info); |
252b5132 RH |
2082 | h = NULL; |
2083 | sym = NULL; | |
2084 | sec = NULL; | |
b34976b6 | 2085 | unresolved_reloc = FALSE; |
252b5132 RH |
2086 | if (r_symndx < symtab_hdr->sh_info) |
2087 | { | |
2088 | sym = local_syms + r_symndx; | |
2089 | sec = local_sections[r_symndx]; | |
2090 | relocation = (sec->output_section->vma | |
2091 | + sec->output_offset | |
2092 | + sym->st_value); | |
1788fc08 | 2093 | st_size = sym->st_size; |
ab96bf03 AM |
2094 | |
2095 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
2096 | && ((sec->flags & SEC_MERGE) != 0 | |
0e1862bb | 2097 | || (bfd_link_relocatable (info) |
ab96bf03 | 2098 | && sec->output_offset != 0))) |
f8df10f4 | 2099 | { |
f8df10f4 | 2100 | bfd_vma addend; |
4a335f3d | 2101 | bfd_byte *where = contents + rel->r_offset; |
f8df10f4 | 2102 | |
4a335f3d | 2103 | switch (howto->size) |
f8df10f4 | 2104 | { |
4a335f3d AM |
2105 | case 0: |
2106 | addend = bfd_get_8 (input_bfd, where); | |
2107 | if (howto->pc_relative) | |
2108 | { | |
2109 | addend = (addend ^ 0x80) - 0x80; | |
2110 | addend += 1; | |
2111 | } | |
2112 | break; | |
2113 | case 1: | |
2114 | addend = bfd_get_16 (input_bfd, where); | |
2115 | if (howto->pc_relative) | |
2116 | { | |
2117 | addend = (addend ^ 0x8000) - 0x8000; | |
2118 | addend += 2; | |
2119 | } | |
2120 | break; | |
2121 | case 2: | |
2122 | addend = bfd_get_32 (input_bfd, where); | |
2123 | if (howto->pc_relative) | |
2124 | { | |
2125 | addend = (addend ^ 0x80000000) - 0x80000000; | |
2126 | addend += 4; | |
2127 | } | |
2128 | break; | |
2129 | default: | |
2130 | abort (); | |
f8df10f4 JJ |
2131 | } |
2132 | ||
0e1862bb | 2133 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
2134 | addend += sec->output_offset; |
2135 | else | |
2136 | { | |
2137 | asection *msec = sec; | |
2138 | addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, | |
2139 | addend); | |
2140 | addend -= relocation; | |
2141 | addend += msec->output_section->vma + msec->output_offset; | |
2142 | } | |
4a335f3d AM |
2143 | |
2144 | switch (howto->size) | |
2145 | { | |
2146 | case 0: | |
16a10388 | 2147 | /* FIXME: overflow checks. */ |
4a335f3d AM |
2148 | if (howto->pc_relative) |
2149 | addend -= 1; | |
2150 | bfd_put_8 (input_bfd, addend, where); | |
4a335f3d AM |
2151 | break; |
2152 | case 1: | |
2153 | if (howto->pc_relative) | |
2154 | addend -= 2; | |
2155 | bfd_put_16 (input_bfd, addend, where); | |
4a335f3d AM |
2156 | break; |
2157 | case 2: | |
2158 | if (howto->pc_relative) | |
2159 | addend -= 4; | |
2160 | bfd_put_32 (input_bfd, addend, where); | |
2161 | break; | |
2162 | } | |
f8df10f4 | 2163 | } |
0e1862bb | 2164 | else if (!bfd_link_relocatable (info) |
1f85278f | 2165 | && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
c25bc9fc L |
2166 | { |
2167 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
0afcef53 L |
2168 | h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd, rel, |
2169 | FALSE); | |
c25bc9fc L |
2170 | if (h == NULL) |
2171 | abort (); | |
2172 | ||
23209a78 | 2173 | /* Set STT_GNU_IFUNC symbol value. */ |
c25bc9fc L |
2174 | h->root.u.def.value = sym->st_value; |
2175 | h->root.u.def.section = sec; | |
2176 | } | |
252b5132 RH |
2177 | } |
2178 | else | |
2179 | { | |
3d540e93 | 2180 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 2181 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
ffb2e45b | 2182 | |
b2a8e766 AM |
2183 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
2184 | r_symndx, symtab_hdr, sym_hashes, | |
2185 | h, sec, relocation, | |
62d887d4 | 2186 | unresolved_reloc, warned, ignored); |
1788fc08 | 2187 | st_size = h->size; |
252b5132 RH |
2188 | } |
2189 | ||
dbaa2011 | 2190 | if (sec != NULL && discarded_section (sec)) |
60f2e42e L |
2191 | { |
2192 | _bfd_clear_contents (howto, input_bfd, input_section, | |
0930cb30 | 2193 | contents, rel->r_offset); |
60f2e42e L |
2194 | wrel->r_offset = rel->r_offset; |
2195 | wrel->r_info = 0; | |
2196 | wrel->r_addend = 0; | |
2197 | ||
2198 | /* For ld -r, remove relocations in debug sections against | |
2199 | sections defined in discarded sections. Not done for | |
2200 | eh_frame editing code expects to be present. */ | |
2201 | if (bfd_link_relocatable (info) | |
2202 | && (input_section->flags & SEC_DEBUGGING)) | |
2203 | wrel--; | |
2204 | ||
2205 | continue; | |
2206 | } | |
9635fe29 | 2207 | |
0e1862bb | 2208 | if (bfd_link_relocatable (info)) |
2d5da473 L |
2209 | { |
2210 | if (wrel != rel) | |
2211 | *wrel = *rel; | |
2212 | continue; | |
2213 | } | |
ab96bf03 | 2214 | |
0afcef53 | 2215 | eh = (struct elf_x86_link_hash_entry *) h; |
ee2fdd6f | 2216 | |
cbe950e9 L |
2217 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
2218 | it here if it is defined in a non-shared object. */ | |
2219 | if (h != NULL | |
2220 | && h->type == STT_GNU_IFUNC | |
2221 | && h->def_regular) | |
2222 | { | |
ee2fdd6f | 2223 | asection *gotplt, *base_got; |
cbe950e9 | 2224 | bfd_vma plt_index; |
4c544807 | 2225 | const char *name; |
cbe950e9 | 2226 | |
97dc35c8 L |
2227 | if ((input_section->flags & SEC_ALLOC) == 0) |
2228 | { | |
347a8774 L |
2229 | /* If this is a SHT_NOTE section without SHF_ALLOC, treat |
2230 | STT_GNU_IFUNC symbol as STT_FUNC. */ | |
2231 | if (elf_section_type (input_section) == SHT_NOTE) | |
2232 | goto skip_ifunc; | |
97dc35c8 L |
2233 | /* Dynamic relocs are not propagated for SEC_DEBUGGING |
2234 | sections because such sections are not SEC_ALLOC and | |
2235 | thus ld.so will not process them. */ | |
2236 | if ((input_section->flags & SEC_DEBUGGING) != 0) | |
0eace210 | 2237 | continue; |
97dc35c8 L |
2238 | abort (); |
2239 | } | |
cbe950e9 L |
2240 | |
2241 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
6de2ae4a | 2242 | if (htab->elf.splt != NULL) |
cbe950e9 | 2243 | { |
ee2fdd6f L |
2244 | if (htab->plt_second != NULL) |
2245 | { | |
2246 | resolved_plt = htab->plt_second; | |
2247 | plt_offset = eh->plt_second.offset; | |
2248 | } | |
2249 | else | |
2250 | { | |
2251 | resolved_plt = htab->elf.splt; | |
2252 | plt_offset = h->plt.offset; | |
2253 | } | |
6de2ae4a | 2254 | gotplt = htab->elf.sgotplt; |
cbe950e9 L |
2255 | } |
2256 | else | |
2257 | { | |
ee2fdd6f L |
2258 | resolved_plt = htab->elf.iplt; |
2259 | plt_offset = h->plt.offset; | |
6de2ae4a | 2260 | gotplt = htab->elf.igotplt; |
cbe950e9 L |
2261 | } |
2262 | ||
cbe950e9 L |
2263 | switch (r_type) |
2264 | { | |
2265 | default: | |
233cc9c1 | 2266 | break; |
cbe950e9 L |
2267 | |
2268 | case R_386_GOT32: | |
02a86693 | 2269 | case R_386_GOT32X: |
6de2ae4a | 2270 | base_got = htab->elf.sgot; |
cbe950e9 L |
2271 | off = h->got.offset; |
2272 | ||
7afd84dc | 2273 | if (base_got == NULL) |
cbe950e9 L |
2274 | abort (); |
2275 | ||
7afd84dc | 2276 | if (off == (bfd_vma) -1) |
cbe950e9 | 2277 | { |
7afd84dc L |
2278 | /* We can't use h->got.offset here to save state, or |
2279 | even just remember the offset, as finish_dynamic_symbol | |
2280 | would use that as offset into .got. */ | |
6bbec505 | 2281 | |
233cc9c1 L |
2282 | if (h->plt.offset == (bfd_vma) -1) |
2283 | abort (); | |
2284 | ||
6de2ae4a | 2285 | if (htab->elf.splt != NULL) |
7afd84dc | 2286 | { |
f604c2a2 | 2287 | plt_index = (h->plt.offset / plt_entry_size |
765e526c | 2288 | - htab->plt.has_plt0); |
7afd84dc | 2289 | off = (plt_index + 3) * 4; |
6de2ae4a | 2290 | base_got = htab->elf.sgotplt; |
7afd84dc | 2291 | } |
cbe950e9 L |
2292 | else |
2293 | { | |
25e762b9 | 2294 | plt_index = h->plt.offset / plt_entry_size; |
7afd84dc | 2295 | off = plt_index * 4; |
6de2ae4a | 2296 | base_got = htab->elf.igotplt; |
7afd84dc L |
2297 | } |
2298 | ||
2299 | if (h->dynindx == -1 | |
2300 | || h->forced_local | |
2301 | || info->symbolic) | |
2302 | { | |
2303 | /* This references the local defitionion. We must | |
2304 | initialize this entry in the global offset table. | |
2305 | Since the offset must always be a multiple of 8, | |
2306 | we use the least significant bit to record | |
2307 | whether we have initialized it already. | |
2308 | ||
2309 | When doing a dynamic link, we create a .rela.got | |
2310 | relocation entry to initialize the value. This | |
2311 | is done in the finish_dynamic_symbol routine. */ | |
2312 | if ((off & 1) != 0) | |
2313 | off &= ~1; | |
2314 | else | |
2315 | { | |
2316 | bfd_put_32 (output_bfd, relocation, | |
2317 | base_got->contents + off); | |
2318 | h->got.offset |= 1; | |
2319 | } | |
cbe950e9 | 2320 | } |
cbe950e9 | 2321 | |
7afd84dc | 2322 | relocation = off; |
7afd84dc L |
2323 | } |
2324 | else | |
ca8c86ef L |
2325 | relocation = (base_got->output_section->vma |
2326 | + base_got->output_offset + off | |
2327 | - gotplt->output_section->vma | |
2328 | - gotplt->output_offset); | |
2329 | ||
2a568401 L |
2330 | if (rel->r_offset > 1 |
2331 | && (*(contents + rel->r_offset - 1) & 0xc7) == 0x5 | |
2332 | && *(contents + rel->r_offset - 2) != 0x8d) | |
712ec279 L |
2333 | { |
2334 | if (bfd_link_pic (info)) | |
2335 | goto disallow_got32; | |
2336 | ||
2337 | /* Add the GOT base if there is no base register. */ | |
2338 | relocation += (gotplt->output_section->vma | |
2339 | + gotplt->output_offset); | |
2340 | } | |
2341 | else if (htab->elf.splt == NULL) | |
2342 | { | |
2343 | /* Adjust for static executables. */ | |
2344 | relocation += gotplt->output_offset; | |
2345 | } | |
0018b0a3 | 2346 | |
cbe950e9 | 2347 | goto do_relocation; |
233cc9c1 L |
2348 | } |
2349 | ||
2350 | if (h->plt.offset == (bfd_vma) -1) | |
2351 | { | |
2352 | /* Handle static pointers of STT_GNU_IFUNC symbols. */ | |
2353 | if (r_type == R_386_32 | |
2354 | && (input_section->flags & SEC_CODE) == 0) | |
2355 | goto do_ifunc_pointer; | |
2356 | goto bad_ifunc_reloc; | |
2357 | } | |
2358 | ||
ee2fdd6f L |
2359 | relocation = (resolved_plt->output_section->vma |
2360 | + resolved_plt->output_offset + plt_offset); | |
233cc9c1 L |
2361 | |
2362 | switch (r_type) | |
2363 | { | |
2364 | default: | |
dc1e8a47 | 2365 | bad_ifunc_reloc: |
233cc9c1 L |
2366 | if (h->root.root.string) |
2367 | name = h->root.root.string; | |
2368 | else | |
2369 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
2370 | NULL); | |
4eca0228 | 2371 | _bfd_error_handler |
695344c0 | 2372 | /* xgettext:c-format */ |
871b3ab2 | 2373 | (_("%pB: relocation %s against STT_GNU_IFUNC " |
233cc9c1 L |
2374 | "symbol `%s' isn't supported"), input_bfd, |
2375 | howto->name, name); | |
2376 | bfd_set_error (bfd_error_bad_value); | |
2377 | return FALSE; | |
2378 | ||
2379 | case R_386_32: | |
2380 | /* Generate dynamic relcoation only when there is a | |
2381 | non-GOT reference in a shared object. */ | |
2382 | if ((bfd_link_pic (info) && h->non_got_ref) | |
2383 | || h->plt.offset == (bfd_vma) -1) | |
2384 | { | |
2385 | Elf_Internal_Rela outrel; | |
2386 | asection *sreloc; | |
2387 | bfd_vma offset; | |
2388 | ||
dc1e8a47 | 2389 | do_ifunc_pointer: |
233cc9c1 L |
2390 | /* Need a dynamic relocation to get the real function |
2391 | adddress. */ | |
2392 | offset = _bfd_elf_section_offset (output_bfd, | |
2393 | info, | |
2394 | input_section, | |
2395 | rel->r_offset); | |
2396 | if (offset == (bfd_vma) -1 | |
2397 | || offset == (bfd_vma) -2) | |
2398 | abort (); | |
2399 | ||
2400 | outrel.r_offset = (input_section->output_section->vma | |
2401 | + input_section->output_offset | |
2402 | + offset); | |
2403 | ||
cf1070f1 | 2404 | if (POINTER_LOCAL_IFUNC_P (info, h)) |
233cc9c1 | 2405 | { |
871b3ab2 | 2406 | info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"), |
6322e5c5 L |
2407 | h->root.root.string, |
2408 | h->root.u.def.section->owner); | |
2409 | ||
233cc9c1 L |
2410 | /* This symbol is resolved locally. */ |
2411 | outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE); | |
68b00778 L |
2412 | |
2413 | if (htab->params->report_relative_reloc) | |
2414 | _bfd_x86_elf_link_report_relative_reloc | |
2415 | (info, input_section, h, sym, | |
2416 | "R_386_IRELATIVE", &outrel); | |
2417 | ||
233cc9c1 L |
2418 | bfd_put_32 (output_bfd, |
2419 | (h->root.u.def.value | |
2420 | + h->root.u.def.section->output_section->vma | |
2421 | + h->root.u.def.section->output_offset), | |
2422 | contents + offset); | |
2423 | } | |
2424 | else | |
2425 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
2426 | ||
2427 | /* Dynamic relocations are stored in | |
2428 | 1. .rel.ifunc section in PIC object. | |
2429 | 2. .rel.got section in dynamic executable. | |
2430 | 3. .rel.iplt section in static executable. */ | |
2431 | if (bfd_link_pic (info)) | |
2432 | sreloc = htab->elf.irelifunc; | |
2433 | else if (htab->elf.splt != NULL) | |
2434 | sreloc = htab->elf.srelgot; | |
2435 | else | |
2436 | sreloc = htab->elf.irelplt; | |
2437 | elf_append_rel (output_bfd, sreloc, &outrel); | |
2438 | ||
2439 | /* If this reloc is against an external symbol, we | |
2440 | do not want to fiddle with the addend. Otherwise, | |
2441 | we need to include the symbol value so that it | |
2442 | becomes an addend for the dynamic reloc. For an | |
2443 | internal symbol, we have updated addend. */ | |
2444 | continue; | |
2445 | } | |
2446 | /* FALLTHROUGH */ | |
2447 | case R_386_PC32: | |
2448 | case R_386_PLT32: | |
2449 | goto do_relocation; | |
cbe950e9 L |
2450 | |
2451 | case R_386_GOTOFF: | |
2452 | relocation -= (gotplt->output_section->vma | |
2453 | + gotplt->output_offset); | |
2454 | goto do_relocation; | |
2455 | } | |
2456 | } | |
2457 | ||
dc1e8a47 | 2458 | skip_ifunc: |
aec6b87e | 2459 | resolved_to_zero = (eh != NULL |
c5bce5c6 | 2460 | && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh)); |
aec6b87e | 2461 | |
252b5132 RH |
2462 | switch (r_type) |
2463 | { | |
02a86693 | 2464 | case R_386_GOT32X: |
252b5132 RH |
2465 | case R_386_GOT32: |
2466 | /* Relocation is to the entry for this symbol in the global | |
2467 | offset table. */ | |
6de2ae4a | 2468 | if (htab->elf.sgot == NULL) |
ffb2e45b | 2469 | abort (); |
252b5132 | 2470 | |
e133d005 | 2471 | relative_reloc = FALSE; |
252b5132 RH |
2472 | if (h != NULL) |
2473 | { | |
252b5132 | 2474 | off = h->got.offset; |
2eba97c2 | 2475 | if (RESOLVED_LOCALLY_P (info, h, htab)) |
252b5132 | 2476 | { |
2eba97c2 L |
2477 | /* We must initialize this entry in the global offset |
2478 | table. Since the offset must always be a multiple | |
2479 | of 4, we use the least significant bit to record | |
2480 | whether we have initialized it already. | |
252b5132 RH |
2481 | |
2482 | When doing a dynamic link, we create a .rel.got | |
2483 | relocation entry to initialize the value. This | |
2484 | is done in the finish_dynamic_symbol routine. */ | |
2485 | if ((off & 1) != 0) | |
2486 | off &= ~1; | |
2487 | else | |
2488 | { | |
2489 | bfd_put_32 (output_bfd, relocation, | |
6de2ae4a | 2490 | htab->elf.sgot->contents + off); |
252b5132 | 2491 | h->got.offset |= 1; |
e133d005 | 2492 | |
f70656b2 | 2493 | if (GENERATE_RELATIVE_RELOC_P (info, h)) |
e133d005 L |
2494 | { |
2495 | /* PR ld/21402: If this symbol isn't dynamic | |
0dc9a308 | 2496 | in PIC, generate R_386_RELATIVE here. */ |
e133d005 L |
2497 | eh->no_finish_dynamic_symbol = 1; |
2498 | relative_reloc = TRUE; | |
2499 | } | |
252b5132 RH |
2500 | } |
2501 | } | |
8c694914 | 2502 | else |
b34976b6 | 2503 | unresolved_reloc = FALSE; |
252b5132 RH |
2504 | } |
2505 | else | |
2506 | { | |
ffb2e45b AM |
2507 | if (local_got_offsets == NULL) |
2508 | abort (); | |
252b5132 RH |
2509 | |
2510 | off = local_got_offsets[r_symndx]; | |
2511 | ||
2512 | /* The offset must always be a multiple of 4. We use | |
83be169b AM |
2513 | the least significant bit to record whether we have |
2514 | already generated the necessary reloc. */ | |
252b5132 RH |
2515 | if ((off & 1) != 0) |
2516 | off &= ~1; | |
2517 | else | |
2518 | { | |
6725bdbf | 2519 | bfd_put_32 (output_bfd, relocation, |
6de2ae4a | 2520 | htab->elf.sgot->contents + off); |
e133d005 | 2521 | local_got_offsets[r_symndx] |= 1; |
252b5132 | 2522 | |
0e1862bb | 2523 | if (bfd_link_pic (info)) |
e133d005 | 2524 | relative_reloc = TRUE; |
252b5132 | 2525 | } |
252b5132 RH |
2526 | } |
2527 | ||
e133d005 L |
2528 | if (relative_reloc) |
2529 | { | |
2530 | asection *s; | |
2531 | Elf_Internal_Rela outrel; | |
2532 | ||
2533 | s = htab->elf.srelgot; | |
2534 | if (s == NULL) | |
2535 | abort (); | |
2536 | ||
2537 | outrel.r_offset = (htab->elf.sgot->output_section->vma | |
2538 | + htab->elf.sgot->output_offset | |
2539 | + off); | |
2540 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
68b00778 L |
2541 | |
2542 | if (htab->params->report_relative_reloc) | |
2543 | _bfd_x86_elf_link_report_relative_reloc | |
2544 | (info, input_section, h, sym, "R_386_RELATIVE", | |
2545 | &outrel); | |
2546 | ||
e133d005 L |
2547 | elf_append_rel (output_bfd, s, &outrel); |
2548 | } | |
2549 | ||
ffb2e45b AM |
2550 | if (off >= (bfd_vma) -2) |
2551 | abort (); | |
2552 | ||
74d7f0aa L |
2553 | relocation = (htab->elf.sgot->output_section->vma |
2554 | + htab->elf.sgot->output_offset + off); | |
2a568401 L |
2555 | if (rel->r_offset > 1 |
2556 | && (*(contents + rel->r_offset - 1) & 0xc7) == 0x5 | |
2557 | && *(contents + rel->r_offset - 2) != 0x8d) | |
74d7f0aa L |
2558 | { |
2559 | if (bfd_link_pic (info)) | |
2560 | { | |
2561 | /* For PIC, disallow R_386_GOT32 without a base | |
2a568401 L |
2562 | register, except for "lea foo@GOT, %reg", since |
2563 | we don't know what the GOT base is. */ | |
74d7f0aa L |
2564 | const char *name; |
2565 | ||
dc1e8a47 | 2566 | disallow_got32: |
a5def14f | 2567 | if (h == NULL || h->root.root.string == NULL) |
74d7f0aa L |
2568 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, |
2569 | NULL); | |
2570 | else | |
2571 | name = h->root.root.string; | |
2572 | ||
4eca0228 | 2573 | _bfd_error_handler |
695344c0 | 2574 | /* xgettext:c-format */ |
871b3ab2 | 2575 | (_("%pB: direct GOT relocation %s against `%s'" |
63a5468a AM |
2576 | " without base register can not be used" |
2577 | " when making a shared object"), | |
712ec279 | 2578 | input_bfd, howto->name, name); |
74d7f0aa L |
2579 | bfd_set_error (bfd_error_bad_value); |
2580 | return FALSE; | |
2581 | } | |
2582 | } | |
2583 | else | |
2584 | { | |
2585 | /* Subtract the .got.plt section address only with a base | |
2586 | register. */ | |
2587 | relocation -= (htab->elf.sgotplt->output_section->vma | |
2588 | + htab->elf.sgotplt->output_offset); | |
2589 | } | |
2590 | ||
252b5132 RH |
2591 | break; |
2592 | ||
2593 | case R_386_GOTOFF: | |
2594 | /* Relocation is relative to the start of the global offset | |
2595 | table. */ | |
2596 | ||
3d949995 L |
2597 | /* Check to make sure it isn't a protected function or data |
2598 | symbol for shared library since it may not be local when | |
2599 | used as function address or with copy relocation. We also | |
e3c0e327 | 2600 | need to make sure that a symbol is referenced locally. */ |
0e1862bb | 2601 | if (!bfd_link_executable (info) && h) |
90f487df | 2602 | { |
41bed6dd L |
2603 | if (!h->def_regular) |
2604 | { | |
2605 | const char *v; | |
2606 | ||
2607 | switch (ELF_ST_VISIBILITY (h->other)) | |
2608 | { | |
2609 | case STV_HIDDEN: | |
2610 | v = _("hidden symbol"); | |
2611 | break; | |
2612 | case STV_INTERNAL: | |
2613 | v = _("internal symbol"); | |
2614 | break; | |
2615 | case STV_PROTECTED: | |
2616 | v = _("protected symbol"); | |
2617 | break; | |
2618 | default: | |
2619 | v = _("symbol"); | |
2620 | break; | |
2621 | } | |
2622 | ||
4eca0228 | 2623 | _bfd_error_handler |
695344c0 | 2624 | /* xgettext:c-format */ |
871b3ab2 | 2625 | (_("%pB: relocation R_386_GOTOFF against undefined %s" |
63a5468a | 2626 | " `%s' can not be used when making a shared object"), |
41bed6dd L |
2627 | input_bfd, v, h->root.root.string); |
2628 | bfd_set_error (bfd_error_bad_value); | |
2629 | return FALSE; | |
2630 | } | |
6999821f | 2631 | else if (!SYMBOL_REFERENCES_LOCAL_P (info, h) |
3d949995 L |
2632 | && (h->type == STT_FUNC |
2633 | || h->type == STT_OBJECT) | |
41bed6dd L |
2634 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) |
2635 | { | |
4eca0228 | 2636 | _bfd_error_handler |
695344c0 | 2637 | /* xgettext:c-format */ |
871b3ab2 | 2638 | (_("%pB: relocation R_386_GOTOFF against protected %s" |
63a5468a | 2639 | " `%s' can not be used when making a shared object"), |
3d949995 L |
2640 | input_bfd, |
2641 | h->type == STT_FUNC ? "function" : "data", | |
2642 | h->root.root.string); | |
41bed6dd L |
2643 | bfd_set_error (bfd_error_bad_value); |
2644 | return FALSE; | |
2645 | } | |
90f487df L |
2646 | } |
2647 | ||
8c37241b JJ |
2648 | /* Note that sgot is not involved in this |
2649 | calculation. We always want the start of .got.plt. If we | |
2650 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
252b5132 RH |
2651 | permitted by the ABI, we might have to change this |
2652 | calculation. */ | |
6de2ae4a L |
2653 | relocation -= htab->elf.sgotplt->output_section->vma |
2654 | + htab->elf.sgotplt->output_offset; | |
252b5132 RH |
2655 | break; |
2656 | ||
2657 | case R_386_GOTPC: | |
2658 | /* Use global offset table as symbol value. */ | |
6de2ae4a L |
2659 | relocation = htab->elf.sgotplt->output_section->vma |
2660 | + htab->elf.sgotplt->output_offset; | |
b34976b6 | 2661 | unresolved_reloc = FALSE; |
252b5132 RH |
2662 | break; |
2663 | ||
2664 | case R_386_PLT32: | |
2665 | /* Relocation is to the entry for this symbol in the | |
2666 | procedure linkage table. */ | |
2667 | ||
dd5724d5 | 2668 | /* Resolve a PLT32 reloc against a local symbol directly, |
83be169b | 2669 | without using the procedure linkage table. */ |
252b5132 RH |
2670 | if (h == NULL) |
2671 | break; | |
2672 | ||
dd7e64d4 L |
2673 | if ((h->plt.offset == (bfd_vma) -1 |
2674 | && eh->plt_got.offset == (bfd_vma) -1) | |
6de2ae4a | 2675 | || htab->elf.splt == NULL) |
252b5132 RH |
2676 | { |
2677 | /* We didn't make a PLT entry for this symbol. This | |
83be169b AM |
2678 | happens when statically linking PIC code, or when |
2679 | using -Bsymbolic. */ | |
252b5132 RH |
2680 | break; |
2681 | } | |
2682 | ||
dd7e64d4 L |
2683 | if (h->plt.offset != (bfd_vma) -1) |
2684 | { | |
ee2fdd6f L |
2685 | if (htab->plt_second != NULL) |
2686 | { | |
2687 | resolved_plt = htab->plt_second; | |
2688 | plt_offset = eh->plt_second.offset; | |
2689 | } | |
2690 | else | |
2691 | { | |
2692 | resolved_plt = htab->elf.splt; | |
2693 | plt_offset = h->plt.offset; | |
2694 | } | |
dd7e64d4 L |
2695 | } |
2696 | else | |
2697 | { | |
2698 | resolved_plt = htab->plt_got; | |
2699 | plt_offset = eh->plt_got.offset; | |
2700 | } | |
2701 | ||
2702 | relocation = (resolved_plt->output_section->vma | |
2703 | + resolved_plt->output_offset | |
2704 | + plt_offset); | |
b34976b6 | 2705 | unresolved_reloc = FALSE; |
252b5132 RH |
2706 | break; |
2707 | ||
1788fc08 | 2708 | case R_386_SIZE32: |
1788fc08 L |
2709 | /* Set to symbol size. */ |
2710 | relocation = st_size; | |
2711 | /* Fall through. */ | |
2712 | ||
252b5132 RH |
2713 | case R_386_32: |
2714 | case R_386_PC32: | |
3348747a NS |
2715 | if ((input_section->flags & SEC_ALLOC) == 0 |
2716 | || is_vxworks_tls) | |
ec338859 AM |
2717 | break; |
2718 | ||
382aae06 | 2719 | if (GENERATE_DYNAMIC_RELOCATION_P (info, eh, r_type, sec, |
aebcc8ff L |
2720 | FALSE, resolved_to_zero, |
2721 | (r_type == R_386_PC32))) | |
252b5132 | 2722 | { |
947216bf | 2723 | Elf_Internal_Rela outrel; |
b34976b6 | 2724 | bfd_boolean skip, relocate; |
0c715baa | 2725 | asection *sreloc; |
252b5132 RH |
2726 | |
2727 | /* When generating a shared object, these relocations | |
2728 | are copied into the output file to be resolved at run | |
2729 | time. */ | |
2730 | ||
b34976b6 AM |
2731 | skip = FALSE; |
2732 | relocate = FALSE; | |
252b5132 | 2733 | |
c629eae0 JJ |
2734 | outrel.r_offset = |
2735 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2736 | rel->r_offset); | |
2737 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 2738 | skip = TRUE; |
0bb2d96a | 2739 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 2740 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
2741 | outrel.r_offset += (input_section->output_section->vma |
2742 | + input_section->output_offset); | |
2743 | ||
2744 | if (skip) | |
0bb2d96a | 2745 | memset (&outrel, 0, sizeof outrel); |
e74399c4 | 2746 | else if (COPY_INPUT_RELOC_P (info, h, r_type)) |
0bb2d96a | 2747 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
2748 | else |
2749 | { | |
5a15f56f | 2750 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 2751 | relocate = TRUE; |
5a15f56f | 2752 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
68b00778 L |
2753 | |
2754 | if (htab->params->report_relative_reloc) | |
2755 | _bfd_x86_elf_link_report_relative_reloc | |
2756 | (info, input_section, h, sym, "R_386_RELATIVE", | |
2757 | &outrel); | |
252b5132 RH |
2758 | } |
2759 | ||
cbe950e9 | 2760 | sreloc = elf_section_data (input_section)->sreloc; |
e7c33416 | 2761 | |
62d78908 L |
2762 | if (sreloc == NULL || sreloc->contents == NULL) |
2763 | { | |
2764 | r = bfd_reloc_notsupported; | |
2765 | goto check_relocation_error; | |
2766 | } | |
0c715baa | 2767 | |
59d6ffb2 | 2768 | elf_append_rel (output_bfd, sreloc, &outrel); |
252b5132 RH |
2769 | |
2770 | /* If this reloc is against an external symbol, we do | |
2771 | not want to fiddle with the addend. Otherwise, we | |
2772 | need to include the symbol value so that it becomes | |
2773 | an addend for the dynamic reloc. */ | |
0f88be7a | 2774 | if (! relocate) |
252b5132 RH |
2775 | continue; |
2776 | } | |
252b5132 RH |
2777 | break; |
2778 | ||
37e55690 | 2779 | case R_386_TLS_IE: |
0e1862bb | 2780 | if (!bfd_link_executable (info)) |
37e55690 | 2781 | { |
947216bf | 2782 | Elf_Internal_Rela outrel; |
37e55690 | 2783 | asection *sreloc; |
37e55690 JJ |
2784 | |
2785 | outrel.r_offset = rel->r_offset | |
2786 | + input_section->output_section->vma | |
2787 | + input_section->output_offset; | |
2788 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
68b00778 L |
2789 | |
2790 | if (htab->params->report_relative_reloc) | |
2791 | _bfd_x86_elf_link_report_relative_reloc | |
2792 | (info, input_section, h, sym, "R_386_RELATIVE", | |
2793 | &outrel); | |
2794 | ||
37e55690 JJ |
2795 | sreloc = elf_section_data (input_section)->sreloc; |
2796 | if (sreloc == NULL) | |
2797 | abort (); | |
59d6ffb2 | 2798 | elf_append_rel (output_bfd, sreloc, &outrel); |
37e55690 JJ |
2799 | } |
2800 | /* Fall through */ | |
2801 | ||
13ae64f3 | 2802 | case R_386_TLS_GD: |
67a4f2b7 AO |
2803 | case R_386_TLS_GOTDESC: |
2804 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 2805 | case R_386_TLS_IE_32: |
37e55690 | 2806 | case R_386_TLS_GOTIE: |
13ae64f3 JJ |
2807 | tls_type = GOT_UNKNOWN; |
2808 | if (h == NULL && local_got_offsets) | |
0afcef53 | 2809 | tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx]; |
13ae64f3 | 2810 | else if (h != NULL) |
0afcef53 | 2811 | tls_type = elf_x86_hash_entry(h)->tls_type; |
37e55690 JJ |
2812 | if (tls_type == GOT_TLS_IE) |
2813 | tls_type = GOT_TLS_IE_NEG; | |
142411ca | 2814 | |
419414ea | 2815 | r_type_tls = r_type; |
142411ca L |
2816 | if (! elf_i386_tls_transition (info, input_bfd, |
2817 | input_section, contents, | |
2818 | symtab_hdr, sym_hashes, | |
419414ea | 2819 | &r_type_tls, tls_type, rel, |
bedfd056 | 2820 | relend, h, r_symndx, TRUE)) |
142411ca | 2821 | return FALSE; |
13ae64f3 | 2822 | |
419414ea | 2823 | if (r_type_tls == R_386_TLS_LE_32) |
13ae64f3 | 2824 | { |
82e51918 | 2825 | BFD_ASSERT (! unresolved_reloc); |
419414ea | 2826 | if (r_type == R_386_TLS_GD) |
13ae64f3 | 2827 | { |
142411ca | 2828 | unsigned int type; |
13ae64f3 JJ |
2829 | bfd_vma roff; |
2830 | ||
2831 | /* GD->LE transition. */ | |
6eaa7fb5 | 2832 | type = *(contents + rel->r_offset - 2); |
13ae64f3 JJ |
2833 | if (type == 0x04) |
2834 | { | |
6eaa7fb5 L |
2835 | /* Change |
2836 | leal foo@tlsgd(,%ebx,1), %eax | |
2837 | call ___tls_get_addr@PLT | |
2838 | into: | |
2839 | movl %gs:0, %eax | |
2840 | subl $foo@tpoff, %eax | |
13ae64f3 | 2841 | (6 byte form of subl). */ |
142411ca | 2842 | roff = rel->r_offset + 5; |
13ae64f3 JJ |
2843 | } |
2844 | else | |
2845 | { | |
6eaa7fb5 L |
2846 | /* Change |
2847 | leal foo@tlsgd(%ebx), %eax | |
2848 | call ___tls_get_addr@PLT | |
2849 | nop | |
2850 | or | |
2851 | leal foo@tlsgd(%reg), %eax | |
2852 | call *___tls_get_addr@GOT(%reg) | |
2853 | which may be converted to | |
2854 | addr32 call ___tls_get_addr | |
2855 | into: | |
2856 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
142411ca | 2857 | (6 byte form of subl). */ |
142411ca | 2858 | roff = rel->r_offset + 6; |
13ae64f3 | 2859 | } |
6eaa7fb5 L |
2860 | memcpy (contents + roff - 8, |
2861 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
eb4ff4d6 | 2862 | bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation), |
13ae64f3 | 2863 | contents + roff); |
6eaa7fb5 | 2864 | /* Skip R_386_PC32, R_386_PLT32 and R_386_GOT32X. */ |
13ae64f3 | 2865 | rel++; |
60f2e42e | 2866 | wrel++; |
13ae64f3 JJ |
2867 | continue; |
2868 | } | |
419414ea | 2869 | else if (r_type == R_386_TLS_GOTDESC) |
67a4f2b7 AO |
2870 | { |
2871 | /* GDesc -> LE transition. | |
2872 | It's originally something like: | |
2873 | leal x@tlsdesc(%ebx), %eax | |
2874 | ||
2875 | leal x@ntpoff, %eax | |
2876 | ||
2877 | Registers other than %eax may be set up here. */ | |
2878 | ||
142411ca | 2879 | unsigned int val; |
67a4f2b7 AO |
2880 | bfd_vma roff; |
2881 | ||
67a4f2b7 | 2882 | roff = rel->r_offset; |
67a4f2b7 | 2883 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
2884 | |
2885 | /* Now modify the instruction as appropriate. */ | |
2886 | /* aoliva FIXME: remove the above and xor the byte | |
2887 | below with 0x86. */ | |
2888 | bfd_put_8 (output_bfd, val ^ 0x86, | |
2889 | contents + roff - 1); | |
eb4ff4d6 | 2890 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
67a4f2b7 AO |
2891 | contents + roff); |
2892 | continue; | |
2893 | } | |
419414ea | 2894 | else if (r_type == R_386_TLS_DESC_CALL) |
67a4f2b7 AO |
2895 | { |
2896 | /* GDesc -> LE transition. | |
2897 | It's originally: | |
2898 | call *(%eax) | |
2899 | Turn it into: | |
142411ca | 2900 | xchg %ax,%ax */ |
67a4f2b7 | 2901 | |
67a4f2b7 | 2902 | bfd_vma roff; |
6bbec505 | 2903 | |
67a4f2b7 | 2904 | roff = rel->r_offset; |
10efb593 | 2905 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
2906 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
2907 | continue; | |
2908 | } | |
419414ea | 2909 | else if (r_type == R_386_TLS_IE) |
13ae64f3 | 2910 | { |
142411ca | 2911 | unsigned int val; |
13ae64f3 JJ |
2912 | |
2913 | /* IE->LE transition: | |
37e55690 JJ |
2914 | Originally it can be one of: |
2915 | movl foo, %eax | |
2916 | movl foo, %reg | |
2917 | addl foo, %reg | |
2918 | We change it into: | |
2919 | movl $foo, %eax | |
2920 | movl $foo, %reg | |
2921 | addl $foo, %reg. */ | |
37e55690 | 2922 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
37e55690 JJ |
2923 | if (val == 0xa1) |
2924 | { | |
2925 | /* movl foo, %eax. */ | |
55fd94b0 AM |
2926 | bfd_put_8 (output_bfd, 0xb8, |
2927 | contents + rel->r_offset - 1); | |
37e55690 | 2928 | } |
299bf759 | 2929 | else |
37e55690 | 2930 | { |
142411ca L |
2931 | unsigned int type; |
2932 | ||
55fd94b0 AM |
2933 | type = bfd_get_8 (input_bfd, |
2934 | contents + rel->r_offset - 2); | |
299bf759 | 2935 | switch (type) |
26e41594 | 2936 | { |
299bf759 L |
2937 | case 0x8b: |
2938 | /* movl */ | |
299bf759 L |
2939 | bfd_put_8 (output_bfd, 0xc7, |
2940 | contents + rel->r_offset - 2); | |
2941 | bfd_put_8 (output_bfd, | |
2942 | 0xc0 | ((val >> 3) & 7), | |
2943 | contents + rel->r_offset - 1); | |
2944 | break; | |
2945 | case 0x03: | |
2946 | /* addl */ | |
299bf759 L |
2947 | bfd_put_8 (output_bfd, 0x81, |
2948 | contents + rel->r_offset - 2); | |
2949 | bfd_put_8 (output_bfd, | |
2950 | 0xc0 | ((val >> 3) & 7), | |
2951 | contents + rel->r_offset - 1); | |
2952 | break; | |
2953 | default: | |
2954 | BFD_FAIL (); | |
2955 | break; | |
26e41594 | 2956 | } |
37e55690 | 2957 | } |
eb4ff4d6 | 2958 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
37e55690 JJ |
2959 | contents + rel->r_offset); |
2960 | continue; | |
2961 | } | |
2962 | else | |
2963 | { | |
2964 | unsigned int val, type; | |
2965 | ||
2966 | /* {IE_32,GOTIE}->LE transition: | |
2967 | Originally it can be one of: | |
13ae64f3 | 2968 | subl foo(%reg1), %reg2 |
13ae64f3 | 2969 | movl foo(%reg1), %reg2 |
37e55690 | 2970 | addl foo(%reg1), %reg2 |
13ae64f3 JJ |
2971 | We change it into: |
2972 | subl $foo, %reg2 | |
37e55690 JJ |
2973 | movl $foo, %reg2 (6 byte form) |
2974 | addl $foo, %reg2. */ | |
13ae64f3 JJ |
2975 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
2976 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
13ae64f3 JJ |
2977 | if (type == 0x8b) |
2978 | { | |
2979 | /* movl */ | |
13ae64f3 JJ |
2980 | bfd_put_8 (output_bfd, 0xc7, |
2981 | contents + rel->r_offset - 2); | |
2982 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
2983 | contents + rel->r_offset - 1); | |
2984 | } | |
2985 | else if (type == 0x2b) | |
2986 | { | |
2987 | /* subl */ | |
13ae64f3 JJ |
2988 | bfd_put_8 (output_bfd, 0x81, |
2989 | contents + rel->r_offset - 2); | |
2990 | bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), | |
2991 | contents + rel->r_offset - 1); | |
2992 | } | |
37e55690 JJ |
2993 | else if (type == 0x03) |
2994 | { | |
2995 | /* addl */ | |
2996 | bfd_put_8 (output_bfd, 0x81, | |
2997 | contents + rel->r_offset - 2); | |
2998 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
2999 | contents + rel->r_offset - 1); | |
3000 | } | |
13ae64f3 JJ |
3001 | else |
3002 | BFD_FAIL (); | |
419414ea | 3003 | if (r_type == R_386_TLS_GOTIE) |
eb4ff4d6 | 3004 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
37e55690 JJ |
3005 | contents + rel->r_offset); |
3006 | else | |
eb4ff4d6 | 3007 | bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation), |
37e55690 | 3008 | contents + rel->r_offset); |
13ae64f3 JJ |
3009 | continue; |
3010 | } | |
3011 | } | |
3012 | ||
6de2ae4a | 3013 | if (htab->elf.sgot == NULL) |
13ae64f3 JJ |
3014 | abort (); |
3015 | ||
3016 | if (h != NULL) | |
67a4f2b7 AO |
3017 | { |
3018 | off = h->got.offset; | |
0afcef53 | 3019 | offplt = elf_x86_hash_entry (h)->tlsdesc_got; |
67a4f2b7 | 3020 | } |
13ae64f3 JJ |
3021 | else |
3022 | { | |
3023 | if (local_got_offsets == NULL) | |
3024 | abort (); | |
3025 | ||
3026 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3027 | offplt = local_tlsdesc_gotents[r_symndx]; |
13ae64f3 JJ |
3028 | } |
3029 | ||
3030 | if ((off & 1) != 0) | |
3031 | off &= ~1; | |
26e41594 | 3032 | else |
13ae64f3 | 3033 | { |
947216bf | 3034 | Elf_Internal_Rela outrel; |
91d6fa6a | 3035 | int dr_type; |
67a4f2b7 | 3036 | asection *sreloc; |
13ae64f3 | 3037 | |
6de2ae4a | 3038 | if (htab->elf.srelgot == NULL) |
13ae64f3 JJ |
3039 | abort (); |
3040 | ||
67a4f2b7 AO |
3041 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
3042 | ||
3043 | if (GOT_TLS_GDESC_P (tls_type)) | |
3044 | { | |
59d6ffb2 | 3045 | bfd_byte *loc; |
67a4f2b7 AO |
3046 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC); |
3047 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8 | |
6de2ae4a L |
3048 | <= htab->elf.sgotplt->size); |
3049 | outrel.r_offset = (htab->elf.sgotplt->output_section->vma | |
3050 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
3051 | + offplt |
3052 | + htab->sgotplt_jump_table_size); | |
6de2ae4a | 3053 | sreloc = htab->elf.srelplt; |
67a4f2b7 | 3054 | loc = sreloc->contents; |
765e526c | 3055 | loc += (htab->next_tls_desc_index++ |
5ae0bfb6 | 3056 | * sizeof (Elf32_External_Rel)); |
67a4f2b7 | 3057 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) |
c3b02097 | 3058 | <= sreloc->contents + sreloc->size); |
67a4f2b7 AO |
3059 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
3060 | if (indx == 0) | |
3061 | { | |
3062 | BFD_ASSERT (! unresolved_reloc); | |
3063 | bfd_put_32 (output_bfd, | |
0afcef53 | 3064 | relocation - _bfd_x86_elf_dtpoff_base (info), |
6de2ae4a | 3065 | htab->elf.sgotplt->contents + offplt |
67a4f2b7 AO |
3066 | + htab->sgotplt_jump_table_size + 4); |
3067 | } | |
3068 | else | |
3069 | { | |
3070 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 3071 | htab->elf.sgotplt->contents + offplt |
67a4f2b7 AO |
3072 | + htab->sgotplt_jump_table_size + 4); |
3073 | } | |
3074 | } | |
3075 | ||
6de2ae4a | 3076 | sreloc = htab->elf.srelgot; |
67a4f2b7 | 3077 | |
6de2ae4a L |
3078 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3079 | + htab->elf.sgot->output_offset + off); | |
13ae64f3 | 3080 | |
67a4f2b7 | 3081 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 | 3082 | dr_type = R_386_TLS_DTPMOD32; |
67a4f2b7 AO |
3083 | else if (GOT_TLS_GDESC_P (tls_type)) |
3084 | goto dr_done; | |
37e55690 JJ |
3085 | else if (tls_type == GOT_TLS_IE_POS) |
3086 | dr_type = R_386_TLS_TPOFF; | |
13ae64f3 JJ |
3087 | else |
3088 | dr_type = R_386_TLS_TPOFF32; | |
67a4f2b7 | 3089 | |
37e55690 | 3090 | if (dr_type == R_386_TLS_TPOFF && indx == 0) |
eb4ff4d6 | 3091 | bfd_put_32 (output_bfd, |
0afcef53 | 3092 | relocation - _bfd_x86_elf_dtpoff_base (info), |
6de2ae4a | 3093 | htab->elf.sgot->contents + off); |
37e55690 | 3094 | else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) |
23209a78 | 3095 | bfd_put_32 (output_bfd, |
0afcef53 | 3096 | _bfd_x86_elf_dtpoff_base (info) - relocation, |
6de2ae4a | 3097 | htab->elf.sgot->contents + off); |
67a4f2b7 | 3098 | else if (dr_type != R_386_TLS_DESC) |
c366c25e | 3099 | bfd_put_32 (output_bfd, 0, |
6de2ae4a | 3100 | htab->elf.sgot->contents + off); |
13ae64f3 | 3101 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
67a4f2b7 | 3102 | |
59d6ffb2 | 3103 | elf_append_rel (output_bfd, sreloc, &outrel); |
13ae64f3 | 3104 | |
67a4f2b7 | 3105 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 JJ |
3106 | { |
3107 | if (indx == 0) | |
3108 | { | |
07d6d2b8 | 3109 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 | 3110 | bfd_put_32 (output_bfd, |
0afcef53 | 3111 | relocation - _bfd_x86_elf_dtpoff_base (info), |
6de2ae4a | 3112 | htab->elf.sgot->contents + off + 4); |
13ae64f3 JJ |
3113 | } |
3114 | else | |
3115 | { | |
3116 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 3117 | htab->elf.sgot->contents + off + 4); |
13ae64f3 JJ |
3118 | outrel.r_info = ELF32_R_INFO (indx, |
3119 | R_386_TLS_DTPOFF32); | |
3120 | outrel.r_offset += 4; | |
59d6ffb2 | 3121 | elf_append_rel (output_bfd, sreloc, &outrel); |
13ae64f3 JJ |
3122 | } |
3123 | } | |
37e55690 JJ |
3124 | else if (tls_type == GOT_TLS_IE_BOTH) |
3125 | { | |
3126 | bfd_put_32 (output_bfd, | |
eb4ff4d6 | 3127 | (indx == 0 |
0afcef53 | 3128 | ? relocation - _bfd_x86_elf_dtpoff_base (info) |
eb4ff4d6 | 3129 | : 0), |
6de2ae4a | 3130 | htab->elf.sgot->contents + off + 4); |
37e55690 JJ |
3131 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); |
3132 | outrel.r_offset += 4; | |
59d6ffb2 | 3133 | elf_append_rel (output_bfd, sreloc, &outrel); |
37e55690 | 3134 | } |
13ae64f3 | 3135 | |
67a4f2b7 | 3136 | dr_done: |
13ae64f3 JJ |
3137 | if (h != NULL) |
3138 | h->got.offset |= 1; | |
3139 | else | |
3140 | local_got_offsets[r_symndx] |= 1; | |
3141 | } | |
3142 | ||
67a4f2b7 AO |
3143 | if (off >= (bfd_vma) -2 |
3144 | && ! GOT_TLS_GDESC_P (tls_type)) | |
13ae64f3 | 3145 | abort (); |
419414ea L |
3146 | if (r_type_tls == R_386_TLS_GOTDESC |
3147 | || r_type_tls == R_386_TLS_DESC_CALL) | |
67a4f2b7 AO |
3148 | { |
3149 | relocation = htab->sgotplt_jump_table_size + offplt; | |
3150 | unresolved_reloc = FALSE; | |
3151 | } | |
419414ea | 3152 | else if (r_type_tls == r_type) |
13ae64f3 | 3153 | { |
6de2ae4a L |
3154 | bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma |
3155 | + htab->elf.sgotplt->output_offset; | |
3156 | relocation = htab->elf.sgot->output_section->vma | |
3157 | + htab->elf.sgot->output_offset + off - g_o_t; | |
37e55690 JJ |
3158 | if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) |
3159 | && tls_type == GOT_TLS_IE_BOTH) | |
3160 | relocation += 4; | |
3161 | if (r_type == R_386_TLS_IE) | |
8c37241b | 3162 | relocation += g_o_t; |
b34976b6 | 3163 | unresolved_reloc = FALSE; |
13ae64f3 | 3164 | } |
419414ea | 3165 | else if (r_type == R_386_TLS_GD) |
13ae64f3 JJ |
3166 | { |
3167 | unsigned int val, type; | |
3168 | bfd_vma roff; | |
3169 | ||
3170 | /* GD->IE transition. */ | |
6eaa7fb5 L |
3171 | type = *(contents + rel->r_offset - 2); |
3172 | val = *(contents + rel->r_offset - 1); | |
13ae64f3 JJ |
3173 | if (type == 0x04) |
3174 | { | |
6eaa7fb5 L |
3175 | /* Change |
3176 | leal foo@tlsgd(,%ebx,1), %eax | |
3177 | call ___tls_get_addr@PLT | |
3178 | into: | |
3179 | movl %gs:0, %eax | |
3180 | subl $foo@gottpoff(%ebx), %eax. */ | |
13ae64f3 | 3181 | val >>= 3; |
142411ca | 3182 | roff = rel->r_offset - 3; |
13ae64f3 JJ |
3183 | } |
3184 | else | |
3185 | { | |
6eaa7fb5 L |
3186 | /* Change |
3187 | leal foo@tlsgd(%ebx), %eax | |
3188 | call ___tls_get_addr@PLT | |
3189 | nop | |
3190 | or | |
3191 | leal foo@tlsgd(%reg), %eax | |
3192 | call *___tls_get_addr@GOT(%reg) | |
3193 | which may be converted to | |
3194 | addr32 call ___tls_get_addr | |
3195 | into: | |
3196 | movl %gs:0, %eax; | |
3197 | subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 JJ |
3198 | roff = rel->r_offset - 2; |
3199 | } | |
3200 | memcpy (contents + roff, | |
3201 | "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); | |
3202 | contents[roff + 7] = 0x80 | (val & 7); | |
37e55690 JJ |
3203 | /* If foo is used only with foo@gotntpoff(%reg) and |
3204 | foo@indntpoff, but not with foo@gottpoff(%reg), change | |
3205 | subl $foo@gottpoff(%reg), %eax | |
3206 | into: | |
3207 | addl $foo@gotntpoff(%reg), %eax. */ | |
ebcfb3c0 JJ |
3208 | if (tls_type == GOT_TLS_IE_POS) |
3209 | contents[roff + 6] = 0x03; | |
8c37241b | 3210 | bfd_put_32 (output_bfd, |
6de2ae4a L |
3211 | htab->elf.sgot->output_section->vma |
3212 | + htab->elf.sgot->output_offset + off | |
3213 | - htab->elf.sgotplt->output_section->vma | |
3214 | - htab->elf.sgotplt->output_offset, | |
13ae64f3 | 3215 | contents + roff + 8); |
6eaa7fb5 | 3216 | /* Skip R_386_PLT32 and R_386_GOT32X. */ |
13ae64f3 | 3217 | rel++; |
60f2e42e | 3218 | wrel++; |
13ae64f3 JJ |
3219 | continue; |
3220 | } | |
419414ea | 3221 | else if (r_type == R_386_TLS_GOTDESC) |
67a4f2b7 AO |
3222 | { |
3223 | /* GDesc -> IE transition. | |
3224 | It's originally something like: | |
3225 | leal x@tlsdesc(%ebx), %eax | |
3226 | ||
3227 | Change it to: | |
142411ca | 3228 | movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax |
67a4f2b7 AO |
3229 | or: |
3230 | movl x@gottpoff(%ebx), %eax # before negl %eax | |
3231 | ||
3232 | Registers other than %eax may be set up here. */ | |
3233 | ||
67a4f2b7 AO |
3234 | bfd_vma roff; |
3235 | ||
3236 | /* First, make sure it's a leal adding ebx to a 32-bit | |
3237 | offset into any register, although it's probably | |
3238 | almost always going to be eax. */ | |
3239 | roff = rel->r_offset; | |
67a4f2b7 AO |
3240 | |
3241 | /* Now modify the instruction as appropriate. */ | |
3242 | /* To turn a leal into a movl in the form we use it, it | |
3243 | suffices to change the first byte from 0x8d to 0x8b. | |
3244 | aoliva FIXME: should we decide to keep the leal, all | |
3245 | we have to do is remove the statement below, and | |
3246 | adjust the relaxation of R_386_TLS_DESC_CALL. */ | |
3247 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
3248 | ||
3249 | if (tls_type == GOT_TLS_IE_BOTH) | |
3250 | off += 4; | |
3251 | ||
3252 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
3253 | htab->elf.sgot->output_section->vma |
3254 | + htab->elf.sgot->output_offset + off | |
3255 | - htab->elf.sgotplt->output_section->vma | |
3256 | - htab->elf.sgotplt->output_offset, | |
67a4f2b7 AO |
3257 | contents + roff); |
3258 | continue; | |
3259 | } | |
419414ea | 3260 | else if (r_type == R_386_TLS_DESC_CALL) |
67a4f2b7 AO |
3261 | { |
3262 | /* GDesc -> IE transition. | |
3263 | It's originally: | |
3264 | call *(%eax) | |
3265 | ||
3266 | Change it to: | |
142411ca | 3267 | xchg %ax,%ax |
67a4f2b7 AO |
3268 | or |
3269 | negl %eax | |
3270 | depending on how we transformed the TLS_GOTDESC above. | |
3271 | */ | |
3272 | ||
67a4f2b7 AO |
3273 | bfd_vma roff; |
3274 | ||
67a4f2b7 | 3275 | roff = rel->r_offset; |
67a4f2b7 AO |
3276 | |
3277 | /* Now modify the instruction as appropriate. */ | |
3278 | if (tls_type != GOT_TLS_IE_NEG) | |
3279 | { | |
10efb593 L |
3280 | /* xchg %ax,%ax */ |
3281 | bfd_put_8 (output_bfd, 0x66, contents + roff); | |
67a4f2b7 AO |
3282 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3283 | } | |
3284 | else | |
3285 | { | |
3286 | /* negl %eax */ | |
3287 | bfd_put_8 (output_bfd, 0xf7, contents + roff); | |
3288 | bfd_put_8 (output_bfd, 0xd8, contents + roff + 1); | |
3289 | } | |
3290 | ||
3291 | continue; | |
3292 | } | |
3293 | else | |
3294 | BFD_ASSERT (FALSE); | |
13ae64f3 JJ |
3295 | break; |
3296 | ||
3297 | case R_386_TLS_LDM: | |
142411ca L |
3298 | if (! elf_i386_tls_transition (info, input_bfd, |
3299 | input_section, contents, | |
3300 | symtab_hdr, sym_hashes, | |
3301 | &r_type, GOT_UNKNOWN, rel, | |
bedfd056 | 3302 | relend, h, r_symndx, TRUE)) |
142411ca | 3303 | return FALSE; |
13ae64f3 | 3304 | |
142411ca L |
3305 | if (r_type != R_386_TLS_LDM) |
3306 | { | |
6eaa7fb5 L |
3307 | /* LD->LE transition. Change |
3308 | leal foo@tlsldm(%ebx) %eax | |
3309 | call ___tls_get_addr@PLT | |
3310 | into: | |
3311 | movl %gs:0, %eax | |
3312 | nop | |
3313 | leal 0(%esi,1), %esi | |
3314 | or change | |
3315 | leal foo@tlsldm(%reg) %eax | |
3316 | call *___tls_get_addr@GOT(%reg) | |
3317 | which may be converted to | |
3318 | addr32 call ___tls_get_addr | |
3319 | into: | |
3320 | movl %gs:0, %eax | |
3321 | leal 0(%esi), %esi */ | |
142411ca | 3322 | BFD_ASSERT (r_type == R_386_TLS_LE_32); |
6eaa7fb5 L |
3323 | if (*(contents + rel->r_offset + 4) == 0xff |
3324 | || *(contents + rel->r_offset + 4) == 0x67) | |
3325 | memcpy (contents + rel->r_offset - 2, | |
3326 | "\x65\xa1\0\0\0\0\x8d\xb6\0\0\0", 12); | |
3327 | else | |
3328 | memcpy (contents + rel->r_offset - 2, | |
3329 | "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); | |
a3fadc9a | 3330 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 | 3331 | rel++; |
60f2e42e | 3332 | wrel++; |
13ae64f3 JJ |
3333 | continue; |
3334 | } | |
3335 | ||
6de2ae4a | 3336 | if (htab->elf.sgot == NULL) |
13ae64f3 JJ |
3337 | abort (); |
3338 | ||
0afcef53 | 3339 | off = htab->tls_ld_or_ldm_got.offset; |
13ae64f3 JJ |
3340 | if (off & 1) |
3341 | off &= ~1; | |
3342 | else | |
3343 | { | |
947216bf | 3344 | Elf_Internal_Rela outrel; |
13ae64f3 | 3345 | |
6de2ae4a | 3346 | if (htab->elf.srelgot == NULL) |
13ae64f3 JJ |
3347 | abort (); |
3348 | ||
6de2ae4a L |
3349 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3350 | + htab->elf.sgot->output_offset + off); | |
13ae64f3 JJ |
3351 | |
3352 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 3353 | htab->elf.sgot->contents + off); |
13ae64f3 | 3354 | bfd_put_32 (output_bfd, 0, |
6de2ae4a | 3355 | htab->elf.sgot->contents + off + 4); |
13ae64f3 | 3356 | outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); |
59d6ffb2 | 3357 | elf_append_rel (output_bfd, htab->elf.srelgot, &outrel); |
0afcef53 | 3358 | htab->tls_ld_or_ldm_got.offset |= 1; |
13ae64f3 | 3359 | } |
6de2ae4a L |
3360 | relocation = htab->elf.sgot->output_section->vma |
3361 | + htab->elf.sgot->output_offset + off | |
3362 | - htab->elf.sgotplt->output_section->vma | |
3363 | - htab->elf.sgotplt->output_offset; | |
b34976b6 | 3364 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
3365 | break; |
3366 | ||
3367 | case R_386_TLS_LDO_32: | |
0e1862bb L |
3368 | if (!bfd_link_executable (info) |
3369 | || (input_section->flags & SEC_CODE) == 0) | |
0afcef53 | 3370 | relocation -= _bfd_x86_elf_dtpoff_base (info); |
13ae64f3 JJ |
3371 | else |
3372 | /* When converting LDO to LE, we must negate. */ | |
eb4ff4d6 | 3373 | relocation = -elf_i386_tpoff (info, relocation); |
13ae64f3 JJ |
3374 | break; |
3375 | ||
3376 | case R_386_TLS_LE_32: | |
13ae64f3 | 3377 | case R_386_TLS_LE: |
0e1862bb | 3378 | if (!bfd_link_executable (info)) |
37e55690 | 3379 | { |
947216bf | 3380 | Elf_Internal_Rela outrel; |
37e55690 | 3381 | asection *sreloc; |
37e55690 JJ |
3382 | |
3383 | outrel.r_offset = rel->r_offset | |
3384 | + input_section->output_section->vma | |
3385 | + input_section->output_offset; | |
3386 | if (h != NULL && h->dynindx != -1) | |
3387 | indx = h->dynindx; | |
3388 | else | |
3389 | indx = 0; | |
3390 | if (r_type == R_386_TLS_LE_32) | |
3391 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); | |
3392 | else | |
3393 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
3394 | sreloc = elf_section_data (input_section)->sreloc; | |
3395 | if (sreloc == NULL) | |
3396 | abort (); | |
59d6ffb2 | 3397 | elf_append_rel (output_bfd, sreloc, &outrel); |
37e55690 JJ |
3398 | if (indx) |
3399 | continue; | |
3400 | else if (r_type == R_386_TLS_LE_32) | |
0afcef53 | 3401 | relocation = _bfd_x86_elf_dtpoff_base (info) - relocation; |
37e55690 | 3402 | else |
0afcef53 | 3403 | relocation -= _bfd_x86_elf_dtpoff_base (info); |
37e55690 JJ |
3404 | } |
3405 | else if (r_type == R_386_TLS_LE_32) | |
eb4ff4d6 | 3406 | relocation = elf_i386_tpoff (info, relocation); |
37e55690 | 3407 | else |
eb4ff4d6 | 3408 | relocation = -elf_i386_tpoff (info, relocation); |
13ae64f3 JJ |
3409 | break; |
3410 | ||
252b5132 RH |
3411 | default: |
3412 | break; | |
3413 | } | |
3414 | ||
239e1f3a AM |
3415 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
3416 | because such sections are not SEC_ALLOC and thus ld.so will | |
3417 | not process them. */ | |
8c694914 | 3418 | if (unresolved_reloc |
239e1f3a | 3419 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
3420 | && h->def_dynamic) |
3421 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
3422 | rel->r_offset) != (bfd_vma) -1) | |
6a30718d | 3423 | { |
4eca0228 | 3424 | _bfd_error_handler |
695344c0 | 3425 | /* xgettext:c-format */ |
2dcf00ce | 3426 | (_("%pB(%pA+%#" PRIx64 "): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
3427 | input_bfd, |
3428 | input_section, | |
2dcf00ce | 3429 | (uint64_t) rel->r_offset, |
843fe662 | 3430 | howto->name, |
6a30718d | 3431 | h->root.root.string); |
b34976b6 | 3432 | return FALSE; |
6a30718d | 3433 | } |
83be169b | 3434 | |
dc1e8a47 | 3435 | do_relocation: |
252b5132 RH |
3436 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
3437 | contents, rel->r_offset, | |
55fd94b0 | 3438 | relocation, 0); |
252b5132 | 3439 | |
dc1e8a47 | 3440 | check_relocation_error: |
cf5c0c5b | 3441 | if (r != bfd_reloc_ok) |
252b5132 | 3442 | { |
cf5c0c5b | 3443 | const char *name; |
ffb2e45b | 3444 | |
cf5c0c5b AM |
3445 | if (h != NULL) |
3446 | name = h->root.root.string; | |
3447 | else | |
3448 | { | |
3449 | name = bfd_elf_string_from_elf_section (input_bfd, | |
3450 | symtab_hdr->sh_link, | |
3451 | sym->st_name); | |
3452 | if (name == NULL) | |
b34976b6 | 3453 | return FALSE; |
cf5c0c5b | 3454 | if (*name == '\0') |
fd361982 | 3455 | name = bfd_section_name (sec); |
cf5c0c5b | 3456 | } |
ffb2e45b | 3457 | |
cf5c0c5b | 3458 | if (r == bfd_reloc_overflow) |
1a72702b AM |
3459 | (*info->callbacks->reloc_overflow) |
3460 | (info, (h ? &h->root : NULL), name, howto->name, | |
3461 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
cf5c0c5b AM |
3462 | else |
3463 | { | |
4eca0228 | 3464 | _bfd_error_handler |
695344c0 | 3465 | /* xgettext:c-format */ |
2dcf00ce | 3466 | (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"), |
d003868e | 3467 | input_bfd, input_section, |
2dcf00ce | 3468 | (uint64_t) rel->r_offset, name, (int) r); |
b34976b6 | 3469 | return FALSE; |
cf5c0c5b | 3470 | } |
252b5132 | 3471 | } |
60f2e42e L |
3472 | |
3473 | if (wrel != rel) | |
3474 | *wrel = *rel; | |
3475 | } | |
3476 | ||
3477 | if (wrel != rel) | |
3478 | { | |
3479 | Elf_Internal_Shdr *rel_hdr; | |
3480 | size_t deleted = rel - wrel; | |
3481 | ||
3482 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
3483 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
3484 | if (rel_hdr->sh_size == 0) | |
3485 | { | |
3486 | /* It is too late to remove an empty reloc section. Leave | |
3487 | one NONE reloc. | |
3488 | ??? What is wrong with an empty section??? */ | |
3489 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
3490 | deleted -= 1; | |
3491 | } | |
3492 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
3493 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
3494 | input_section->reloc_count -= deleted; | |
252b5132 RH |
3495 | } |
3496 | ||
b34976b6 | 3497 | return TRUE; |
252b5132 RH |
3498 | } |
3499 | ||
3500 | /* Finish up dynamic symbol handling. We set the contents of various | |
3501 | dynamic sections here. */ | |
3502 | ||
b34976b6 | 3503 | static bfd_boolean |
55fd94b0 AM |
3504 | elf_i386_finish_dynamic_symbol (bfd *output_bfd, |
3505 | struct bfd_link_info *info, | |
3506 | struct elf_link_hash_entry *h, | |
3507 | Elf_Internal_Sym *sym) | |
252b5132 | 3508 | { |
0afcef53 | 3509 | struct elf_x86_link_hash_table *htab; |
25e762b9 | 3510 | unsigned plt_entry_size; |
0afcef53 | 3511 | struct elf_x86_link_hash_entry *eh; |
aec6b87e | 3512 | bfd_boolean local_undefweak; |
ee2fdd6f | 3513 | bfd_boolean use_plt_second; |
252b5132 | 3514 | |
0afcef53 | 3515 | htab = elf_x86_hash_table (info, I386_ELF_DATA); |
4dfe6ac6 NC |
3516 | if (htab == NULL) |
3517 | return FALSE; | |
252b5132 | 3518 | |
765e526c | 3519 | plt_entry_size = htab->plt.plt_entry_size; |
25e762b9 | 3520 | |
ee2fdd6f L |
3521 | /* Use the second PLT section only if there is .plt section. */ |
3522 | use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL; | |
3523 | ||
0afcef53 | 3524 | eh = (struct elf_x86_link_hash_entry *) h; |
e133d005 L |
3525 | if (eh->no_finish_dynamic_symbol) |
3526 | abort (); | |
dd7e64d4 | 3527 | |
aec6b87e L |
3528 | /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for |
3529 | resolved undefined weak symbols in executable so that their | |
3530 | references have value 0 at run-time. */ | |
c5bce5c6 | 3531 | local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh); |
aec6b87e | 3532 | |
252b5132 RH |
3533 | if (h->plt.offset != (bfd_vma) -1) |
3534 | { | |
ee2fdd6f | 3535 | bfd_vma plt_index, plt_offset; |
252b5132 | 3536 | bfd_vma got_offset; |
947216bf AM |
3537 | Elf_Internal_Rela rel; |
3538 | bfd_byte *loc; | |
ee2fdd6f | 3539 | asection *plt, *resolved_plt, *gotplt, *relplt; |
cbe950e9 L |
3540 | |
3541 | /* When building a static executable, use .iplt, .igot.plt and | |
3542 | .rel.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 3543 | if (htab->elf.splt != NULL) |
cbe950e9 | 3544 | { |
6de2ae4a L |
3545 | plt = htab->elf.splt; |
3546 | gotplt = htab->elf.sgotplt; | |
3547 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
3548 | } |
3549 | else | |
3550 | { | |
6de2ae4a L |
3551 | plt = htab->elf.iplt; |
3552 | gotplt = htab->elf.igotplt; | |
3553 | relplt = htab->elf.irelplt; | |
cbe950e9 | 3554 | } |
252b5132 | 3555 | |
f3180fa9 | 3556 | VERIFY_PLT_ENTRY (info, h, plt, gotplt, relplt, local_undefweak) |
252b5132 RH |
3557 | |
3558 | /* Get the index in the procedure linkage table which | |
3559 | corresponds to this symbol. This is the index of this symbol | |
3560 | in all the symbols for which we are making plt entries. The | |
cbe950e9 | 3561 | first entry in the procedure linkage table is reserved. |
252b5132 | 3562 | |
cbe950e9 | 3563 | Get the offset into the .got table of the entry that |
252b5132 | 3564 | corresponds to this function. Each .got entry is 4 bytes. |
cbe950e9 | 3565 | The first three are reserved. |
6bbec505 | 3566 | |
cbe950e9 L |
3567 | For static executables, we don't reserve anything. */ |
3568 | ||
6de2ae4a | 3569 | if (plt == htab->elf.splt) |
cbe950e9 | 3570 | { |
f604c2a2 | 3571 | got_offset = (h->plt.offset / plt_entry_size |
765e526c | 3572 | - htab->plt.has_plt0); |
e1f98742 | 3573 | got_offset = (got_offset + 3) * 4; |
cbe950e9 L |
3574 | } |
3575 | else | |
3576 | { | |
e1f98742 L |
3577 | got_offset = h->plt.offset / plt_entry_size; |
3578 | got_offset = got_offset * 4; | |
cbe950e9 | 3579 | } |
252b5132 | 3580 | |
f604c2a2 L |
3581 | /* Fill in the entry in the procedure linkage table and update |
3582 | the first slot. */ | |
765e526c | 3583 | memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry, |
f604c2a2 | 3584 | plt_entry_size); |
ee2fdd6f L |
3585 | |
3586 | if (use_plt_second) | |
3587 | { | |
3588 | const bfd_byte *plt_entry; | |
3589 | if (bfd_link_pic (info)) | |
765e526c | 3590 | plt_entry = htab->non_lazy_plt->pic_plt_entry; |
ee2fdd6f | 3591 | else |
765e526c | 3592 | plt_entry = htab->non_lazy_plt->plt_entry; |
ee2fdd6f | 3593 | memcpy (htab->plt_second->contents + eh->plt_second.offset, |
765e526c | 3594 | plt_entry, htab->non_lazy_plt->plt_entry_size); |
ee2fdd6f L |
3595 | |
3596 | resolved_plt = htab->plt_second; | |
3597 | plt_offset = eh->plt_second.offset; | |
3598 | } | |
3599 | else | |
3600 | { | |
3601 | resolved_plt = plt; | |
3602 | plt_offset = h->plt.offset; | |
3603 | } | |
3604 | ||
0e1862bb | 3605 | if (! bfd_link_pic (info)) |
252b5132 | 3606 | { |
252b5132 | 3607 | bfd_put_32 (output_bfd, |
cbe950e9 L |
3608 | (gotplt->output_section->vma |
3609 | + gotplt->output_offset | |
252b5132 | 3610 | + got_offset), |
ee2fdd6f | 3611 | resolved_plt->contents + plt_offset |
07d6d2b8 | 3612 | + htab->plt.plt_got_offset); |
eac338cf | 3613 | |
90c14f0c | 3614 | if (htab->elf.target_os == is_vxworks) |
eac338cf PB |
3615 | { |
3616 | int s, k, reloc_index; | |
3617 | ||
3618 | /* Create the R_386_32 relocation referencing the GOT | |
3619 | for this PLT entry. */ | |
3620 | ||
3621 | /* S: Current slot number (zero-based). */ | |
765e526c | 3622 | s = ((h->plt.offset - htab->plt.plt_entry_size) |
07d6d2b8 | 3623 | / htab->plt.plt_entry_size); |
eac338cf | 3624 | /* K: Number of relocations for PLTResolve. */ |
0e1862bb | 3625 | if (bfd_link_pic (info)) |
eac338cf PB |
3626 | k = PLTRESOLVE_RELOCS_SHLIB; |
3627 | else | |
3628 | k = PLTRESOLVE_RELOCS; | |
3629 | /* Skip the PLTresolve relocations, and the relocations for | |
3630 | the other PLT slots. */ | |
3631 | reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS; | |
765e526c | 3632 | loc = (htab->srelplt2->contents + reloc_index |
eac338cf PB |
3633 | * sizeof (Elf32_External_Rel)); |
3634 | ||
ee2fdd6f L |
3635 | rel.r_offset = (plt->output_section->vma |
3636 | + plt->output_offset | |
eac338cf | 3637 | + h->plt.offset + 2), |
7325306f | 3638 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
3639 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
3640 | ||
3641 | /* Create the R_386_32 relocation referencing the beginning of | |
3642 | the PLT for this GOT entry. */ | |
6de2ae4a L |
3643 | rel.r_offset = (htab->elf.sgotplt->output_section->vma |
3644 | + htab->elf.sgotplt->output_offset | |
eac338cf | 3645 | + got_offset); |
7325306f | 3646 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf | 3647 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
13ca3149 | 3648 | loc + sizeof (Elf32_External_Rel)); |
eac338cf | 3649 | } |
252b5132 RH |
3650 | } |
3651 | else | |
3652 | { | |
252b5132 | 3653 | bfd_put_32 (output_bfd, got_offset, |
ee2fdd6f | 3654 | resolved_plt->contents + plt_offset |
07d6d2b8 | 3655 | + htab->plt.plt_got_offset); |
252b5132 RH |
3656 | } |
3657 | ||
aec6b87e L |
3658 | /* Fill in the entry in the global offset table. Leave the entry |
3659 | as zero for undefined weak symbol in PIE. No PLT relocation | |
3660 | against undefined weak symbol in PIE. */ | |
3661 | if (!local_undefweak) | |
cbe950e9 | 3662 | { |
765e526c | 3663 | if (htab->plt.has_plt0) |
f604c2a2 L |
3664 | bfd_put_32 (output_bfd, |
3665 | (plt->output_section->vma | |
3666 | + plt->output_offset | |
3667 | + h->plt.offset | |
765e526c | 3668 | + htab->lazy_plt->plt_lazy_offset), |
f604c2a2 | 3669 | gotplt->contents + got_offset); |
252b5132 | 3670 | |
aec6b87e L |
3671 | /* Fill in the entry in the .rel.plt section. */ |
3672 | rel.r_offset = (gotplt->output_section->vma | |
3673 | + gotplt->output_offset | |
3674 | + got_offset); | |
cf1070f1 | 3675 | if (PLT_LOCAL_IFUNC_P (info, h)) |
aec6b87e | 3676 | { |
871b3ab2 | 3677 | info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"), |
6322e5c5 L |
3678 | h->root.root.string, |
3679 | h->root.u.def.section->owner); | |
3680 | ||
aec6b87e L |
3681 | /* If an STT_GNU_IFUNC symbol is locally defined, generate |
3682 | R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend | |
3683 | in the .got.plt section. */ | |
3684 | bfd_put_32 (output_bfd, | |
3685 | (h->root.u.def.value | |
3686 | + h->root.u.def.section->output_section->vma | |
3687 | + h->root.u.def.section->output_offset), | |
3688 | gotplt->contents + got_offset); | |
3689 | rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE); | |
68b00778 L |
3690 | |
3691 | if (htab->params->report_relative_reloc) | |
3692 | _bfd_x86_elf_link_report_relative_reloc | |
3693 | (info, relplt, h, sym, "R_386_IRELATIVE", &rel); | |
3694 | ||
aec6b87e L |
3695 | /* R_386_IRELATIVE comes last. */ |
3696 | plt_index = htab->next_irelative_index--; | |
3697 | } | |
3698 | else | |
3699 | { | |
3700 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); | |
3701 | plt_index = htab->next_jump_slot_index++; | |
3702 | } | |
3703 | ||
3704 | loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel); | |
3705 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); | |
3706 | ||
f604c2a2 L |
3707 | /* Don't fill the second and third slots in PLT entry for |
3708 | static executables nor without PLT0. */ | |
765e526c | 3709 | if (plt == htab->elf.splt && htab->plt.has_plt0) |
aec6b87e L |
3710 | { |
3711 | bfd_put_32 (output_bfd, | |
3712 | plt_index * sizeof (Elf32_External_Rel), | |
3713 | plt->contents + h->plt.offset | |
765e526c | 3714 | + htab->lazy_plt->plt_reloc_offset); |
f604c2a2 L |
3715 | bfd_put_32 (output_bfd, |
3716 | - (h->plt.offset | |
765e526c | 3717 | + htab->lazy_plt->plt_plt_offset + 4), |
f604c2a2 | 3718 | (plt->contents + h->plt.offset |
765e526c | 3719 | + htab->lazy_plt->plt_plt_offset)); |
aec6b87e | 3720 | } |
e1f98742 | 3721 | } |
dd7e64d4 L |
3722 | } |
3723 | else if (eh->plt_got.offset != (bfd_vma) -1) | |
3724 | { | |
3725 | bfd_vma got_offset, plt_offset; | |
3726 | asection *plt, *got, *gotplt; | |
3727 | const bfd_byte *got_plt_entry; | |
3728 | ||
dd7e64d4 L |
3729 | /* Set the entry in the GOT procedure linkage table. */ |
3730 | plt = htab->plt_got; | |
3731 | got = htab->elf.sgot; | |
3732 | gotplt = htab->elf.sgotplt; | |
3733 | got_offset = h->got.offset; | |
3734 | ||
3735 | if (got_offset == (bfd_vma) -1 | |
3736 | || plt == NULL | |
3737 | || got == NULL | |
3738 | || gotplt == NULL) | |
3739 | abort (); | |
3740 | ||
3741 | /* Fill in the entry in the GOT procedure linkage table. */ | |
0e1862bb | 3742 | if (! bfd_link_pic (info)) |
252b5132 | 3743 | { |
765e526c | 3744 | got_plt_entry = htab->non_lazy_plt->plt_entry; |
dd7e64d4 | 3745 | got_offset += got->output_section->vma + got->output_offset; |
252b5132 | 3746 | } |
dd7e64d4 L |
3747 | else |
3748 | { | |
765e526c | 3749 | got_plt_entry = htab->non_lazy_plt->pic_plt_entry; |
dd7e64d4 L |
3750 | got_offset += (got->output_section->vma |
3751 | + got->output_offset | |
3752 | - gotplt->output_section->vma | |
3753 | - gotplt->output_offset); | |
3754 | } | |
3755 | ||
3756 | plt_offset = eh->plt_got.offset; | |
3757 | memcpy (plt->contents + plt_offset, got_plt_entry, | |
765e526c | 3758 | htab->non_lazy_plt->plt_entry_size); |
dd7e64d4 | 3759 | bfd_put_32 (output_bfd, got_offset, |
f604c2a2 | 3760 | (plt->contents + plt_offset |
765e526c | 3761 | + htab->non_lazy_plt->plt_got_offset)); |
dd7e64d4 L |
3762 | } |
3763 | ||
aec6b87e L |
3764 | if (!local_undefweak |
3765 | && !h->def_regular | |
dd7e64d4 L |
3766 | && (h->plt.offset != (bfd_vma) -1 |
3767 | || eh->plt_got.offset != (bfd_vma) -1)) | |
3768 | { | |
3769 | /* Mark the symbol as undefined, rather than as defined in | |
3770 | the .plt section. Leave the value if there were any | |
3771 | relocations where pointer equality matters (this is a clue | |
3772 | for the dynamic linker, to make function pointer | |
3773 | comparisons work between an application and shared | |
3774 | library), otherwise set it to zero. If a function is only | |
3775 | called from a binary, there is no need to slow down | |
3776 | shared libraries because of that. */ | |
3777 | sym->st_shndx = SHN_UNDEF; | |
3778 | if (!h->pointer_equality_needed) | |
3779 | sym->st_value = 0; | |
252b5132 RH |
3780 | } |
3781 | ||
4ec09950 L |
3782 | _bfd_x86_elf_link_fixup_ifunc_symbol (info, htab, h, sym); |
3783 | ||
aec6b87e L |
3784 | /* Don't generate dynamic GOT relocation against undefined weak |
3785 | symbol in executable. */ | |
13ae64f3 | 3786 | if (h->got.offset != (bfd_vma) -1 |
0afcef53 L |
3787 | && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry(h)->tls_type) |
3788 | && (elf_x86_hash_entry(h)->tls_type & GOT_TLS_IE) == 0 | |
aec6b87e | 3789 | && !local_undefweak) |
252b5132 | 3790 | { |
947216bf | 3791 | Elf_Internal_Rela rel; |
233cc9c1 | 3792 | asection *relgot = htab->elf.srelgot; |
68b00778 | 3793 | const char *relative_reloc_name = NULL; |
252b5132 RH |
3794 | |
3795 | /* This symbol has an entry in the global offset table. Set it | |
3796 | up. */ | |
3797 | ||
6de2ae4a | 3798 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
ffb2e45b | 3799 | abort (); |
252b5132 | 3800 | |
6de2ae4a L |
3801 | rel.r_offset = (htab->elf.sgot->output_section->vma |
3802 | + htab->elf.sgot->output_offset | |
dc810e39 | 3803 | + (h->got.offset & ~(bfd_vma) 1)); |
252b5132 | 3804 | |
dd5724d5 AM |
3805 | /* If this is a static link, or it is a -Bsymbolic link and the |
3806 | symbol is defined locally or was forced to be local because | |
3807 | of a version file, we just want to emit a RELATIVE reloc. | |
252b5132 RH |
3808 | The entry in the global offset table will already have been |
3809 | initialized in the relocate_section function. */ | |
710ab287 | 3810 | if (h->def_regular |
0018b0a3 L |
3811 | && h->type == STT_GNU_IFUNC) |
3812 | { | |
233cc9c1 L |
3813 | if (h->plt.offset == (bfd_vma) -1) |
3814 | { | |
3815 | /* STT_GNU_IFUNC is referenced without PLT. */ | |
3816 | if (htab->elf.splt == NULL) | |
3817 | { | |
3818 | /* use .rel[a].iplt section to store .got relocations | |
3819 | in static executable. */ | |
3820 | relgot = htab->elf.irelplt; | |
3821 | } | |
6999821f | 3822 | if (SYMBOL_REFERENCES_LOCAL_P (info, h)) |
233cc9c1 | 3823 | { |
871b3ab2 | 3824 | info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"), |
6322e5c5 L |
3825 | h->root.root.string, |
3826 | h->root.u.def.section->owner); | |
3827 | ||
233cc9c1 L |
3828 | bfd_put_32 (output_bfd, |
3829 | (h->root.u.def.value | |
3830 | + h->root.u.def.section->output_section->vma | |
3831 | + h->root.u.def.section->output_offset), | |
3832 | htab->elf.sgot->contents + h->got.offset); | |
3833 | rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE); | |
68b00778 | 3834 | relative_reloc_name = "R_386_IRELATIVE"; |
233cc9c1 L |
3835 | } |
3836 | else | |
3837 | goto do_glob_dat; | |
3838 | } | |
3839 | else if (bfd_link_pic (info)) | |
710ab287 L |
3840 | { |
3841 | /* Generate R_386_GLOB_DAT. */ | |
3842 | goto do_glob_dat; | |
3843 | } | |
3844 | else | |
3845 | { | |
cd2b2c10 | 3846 | asection *plt; |
ee2fdd6f | 3847 | bfd_vma plt_offset; |
cd2b2c10 | 3848 | |
710ab287 L |
3849 | if (!h->pointer_equality_needed) |
3850 | abort (); | |
3851 | ||
3852 | /* For non-shared object, we can't use .got.plt, which | |
3853 | contains the real function addres if we need pointer | |
3854 | equality. We load the GOT entry with the PLT entry. */ | |
ee2fdd6f L |
3855 | if (htab->plt_second != NULL) |
3856 | { | |
3857 | plt = htab->plt_second; | |
3858 | plt_offset = eh->plt_second.offset; | |
3859 | } | |
3860 | else | |
3861 | { | |
3862 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; | |
3863 | plt_offset = h->plt.offset; | |
3864 | } | |
710ab287 L |
3865 | bfd_put_32 (output_bfd, |
3866 | (plt->output_section->vma | |
ee2fdd6f | 3867 | + plt->output_offset + plt_offset), |
6de2ae4a | 3868 | htab->elf.sgot->contents + h->got.offset); |
710ab287 L |
3869 | return TRUE; |
3870 | } | |
0018b0a3 | 3871 | } |
0e1862bb | 3872 | else if (bfd_link_pic (info) |
6999821f | 3873 | && SYMBOL_REFERENCES_LOCAL_P (info, h)) |
dd5724d5 | 3874 | { |
6725bdbf | 3875 | BFD_ASSERT((h->got.offset & 1) != 0); |
dd5724d5 | 3876 | rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
68b00778 | 3877 | relative_reloc_name = "R_386_RELATIVE"; |
dd5724d5 | 3878 | } |
252b5132 RH |
3879 | else |
3880 | { | |
dd5724d5 | 3881 | BFD_ASSERT((h->got.offset & 1) == 0); |
dc1e8a47 | 3882 | do_glob_dat: |
6725bdbf | 3883 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
6de2ae4a | 3884 | htab->elf.sgot->contents + h->got.offset); |
252b5132 RH |
3885 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); |
3886 | } | |
3887 | ||
68b00778 L |
3888 | if (relative_reloc_name != NULL |
3889 | && htab->params->report_relative_reloc) | |
3890 | _bfd_x86_elf_link_report_relative_reloc | |
3891 | (info, relgot, h, sym, relative_reloc_name, &rel); | |
3892 | ||
233cc9c1 | 3893 | elf_append_rel (output_bfd, relgot, &rel); |
252b5132 RH |
3894 | } |
3895 | ||
f5385ebf | 3896 | if (h->needs_copy) |
252b5132 | 3897 | { |
947216bf | 3898 | Elf_Internal_Rela rel; |
5474d94f | 3899 | asection *s; |
252b5132 RH |
3900 | |
3901 | /* This symbol needs a copy reloc. Set it up. */ | |
ff38b4cc | 3902 | VERIFY_COPY_RELOC (h, htab) |
252b5132 RH |
3903 | |
3904 | rel.r_offset = (h->root.u.def.value | |
3905 | + h->root.u.def.section->output_section->vma | |
3906 | + h->root.u.def.section->output_offset); | |
3907 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); | |
afbf7e8e | 3908 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
3909 | s = htab->elf.sreldynrelro; |
3910 | else | |
3911 | s = htab->elf.srelbss; | |
3912 | elf_append_rel (output_bfd, s, &rel); | |
252b5132 RH |
3913 | } |
3914 | ||
b34976b6 | 3915 | return TRUE; |
252b5132 RH |
3916 | } |
3917 | ||
c25bc9fc L |
3918 | /* Finish up local dynamic symbol handling. We set the contents of |
3919 | various dynamic sections here. */ | |
3920 | ||
1201fda6 | 3921 | static int |
c25bc9fc L |
3922 | elf_i386_finish_local_dynamic_symbol (void **slot, void *inf) |
3923 | { | |
3924 | struct elf_link_hash_entry *h | |
3925 | = (struct elf_link_hash_entry *) *slot; | |
3926 | struct bfd_link_info *info | |
23209a78 | 3927 | = (struct bfd_link_info *) inf; |
c25bc9fc L |
3928 | |
3929 | return elf_i386_finish_dynamic_symbol (info->output_bfd, info, | |
3930 | h, NULL); | |
3931 | } | |
3932 | ||
aec6b87e L |
3933 | /* Finish up undefined weak symbol handling in PIE. Fill its PLT entry |
3934 | here since undefined weak symbol may not be dynamic and may not be | |
3935 | called for elf_i386_finish_dynamic_symbol. */ | |
3936 | ||
3937 | static bfd_boolean | |
3938 | elf_i386_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh, | |
3939 | void *inf) | |
3940 | { | |
3941 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh; | |
3942 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3943 | ||
3944 | if (h->root.type != bfd_link_hash_undefweak | |
3945 | || h->dynindx != -1) | |
3946 | return TRUE; | |
3947 | ||
3948 | return elf_i386_finish_dynamic_symbol (info->output_bfd, | |
5f0f0847 | 3949 | info, h, NULL); |
aec6b87e L |
3950 | } |
3951 | ||
38701953 AM |
3952 | /* Used to decide how to sort relocs in an optimal manner for the |
3953 | dynamic linker, before writing them out. */ | |
3954 | ||
3955 | static enum elf_reloc_type_class | |
cae1fbbb | 3956 | elf_i386_reloc_type_class (const struct bfd_link_info *info, |
7e612e98 AM |
3957 | const asection *rel_sec ATTRIBUTE_UNUSED, |
3958 | const Elf_Internal_Rela *rela) | |
38701953 | 3959 | { |
cae1fbbb L |
3960 | bfd *abfd = info->output_bfd; |
3961 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3962 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
cae1fbbb | 3963 | |
d9e3b590 L |
3964 | if (htab->dynsym != NULL |
3965 | && htab->dynsym->contents != NULL) | |
3966 | { | |
3967 | /* Check relocation against STT_GNU_IFUNC symbol if there are | |
07d6d2b8 | 3968 | dynamic symbols. */ |
d9e3b590 | 3969 | unsigned long r_symndx = ELF32_R_SYM (rela->r_info); |
c428ce9d L |
3970 | if (r_symndx != STN_UNDEF) |
3971 | { | |
3972 | Elf_Internal_Sym sym; | |
3973 | if (!bed->s->swap_symbol_in (abfd, | |
3974 | (htab->dynsym->contents | |
3975 | + r_symndx * sizeof (Elf32_External_Sym)), | |
3976 | 0, &sym)) | |
3977 | abort (); | |
d9e3b590 | 3978 | |
c428ce9d L |
3979 | if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) |
3980 | return reloc_class_ifunc; | |
3981 | } | |
d9e3b590 | 3982 | } |
cae1fbbb | 3983 | |
55fd94b0 | 3984 | switch (ELF32_R_TYPE (rela->r_info)) |
38701953 | 3985 | { |
c428ce9d L |
3986 | case R_386_IRELATIVE: |
3987 | return reloc_class_ifunc; | |
38701953 AM |
3988 | case R_386_RELATIVE: |
3989 | return reloc_class_relative; | |
3990 | case R_386_JUMP_SLOT: | |
3991 | return reloc_class_plt; | |
3992 | case R_386_COPY: | |
3993 | return reloc_class_copy; | |
3994 | default: | |
3995 | return reloc_class_normal; | |
3996 | } | |
3997 | } | |
3998 | ||
252b5132 RH |
3999 | /* Finish up the dynamic sections. */ |
4000 | ||
b34976b6 | 4001 | static bfd_boolean |
55fd94b0 AM |
4002 | elf_i386_finish_dynamic_sections (bfd *output_bfd, |
4003 | struct bfd_link_info *info) | |
252b5132 | 4004 | { |
0afcef53 | 4005 | struct elf_x86_link_hash_table *htab; |
252b5132 | 4006 | |
9577f60b | 4007 | htab = _bfd_x86_elf_finish_dynamic_sections (output_bfd, info); |
4dfe6ac6 NC |
4008 | if (htab == NULL) |
4009 | return FALSE; | |
4010 | ||
9577f60b L |
4011 | if (!htab->elf.dynamic_sections_created) |
4012 | return TRUE; | |
252b5132 | 4013 | |
9577f60b | 4014 | if (htab->elf.splt && htab->elf.splt->size > 0) |
252b5132 | 4015 | { |
9577f60b L |
4016 | /* UnixWare sets the entsize of .plt to 4, although that doesn't |
4017 | really seem like the right value. */ | |
4018 | elf_section_data (htab->elf.splt->output_section) | |
4019 | ->this_hdr.sh_entsize = 4; | |
252b5132 | 4020 | |
9577f60b | 4021 | if (htab->plt.has_plt0) |
252b5132 | 4022 | { |
9577f60b L |
4023 | /* Fill in the special first entry in the procedure linkage |
4024 | table. */ | |
9577f60b L |
4025 | memcpy (htab->elf.splt->contents, htab->plt.plt0_entry, |
4026 | htab->lazy_plt->plt0_entry_size); | |
4027 | memset (htab->elf.splt->contents + htab->lazy_plt->plt0_entry_size, | |
851b6fa1 | 4028 | htab->plt0_pad_byte, |
9577f60b L |
4029 | htab->plt.plt_entry_size - htab->lazy_plt->plt0_entry_size); |
4030 | if (!bfd_link_pic (info)) | |
252b5132 | 4031 | { |
9577f60b L |
4032 | bfd_put_32 (output_bfd, |
4033 | (htab->elf.sgotplt->output_section->vma | |
4034 | + htab->elf.sgotplt->output_offset | |
4035 | + 4), | |
4036 | htab->elf.splt->contents | |
4037 | + htab->lazy_plt->plt0_got1_offset); | |
4038 | bfd_put_32 (output_bfd, | |
4039 | (htab->elf.sgotplt->output_section->vma | |
4040 | + htab->elf.sgotplt->output_offset | |
4041 | + 8), | |
4042 | htab->elf.splt->contents | |
4043 | + htab->lazy_plt->plt0_got2_offset); | |
1f78f649 | 4044 | |
90c14f0c | 4045 | if (htab->elf.target_os == is_vxworks) |
eac338cf | 4046 | { |
9577f60b L |
4047 | Elf_Internal_Rela rel; |
4048 | int num_plts = (htab->elf.splt->size | |
4049 | / htab->plt.plt_entry_size) - 1; | |
4050 | unsigned char *p; | |
4051 | asection *srelplt2 = htab->srelplt2; | |
4052 | ||
4053 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ | |
4054 | + 4. On IA32 we use REL relocations so the | |
4055 | addend goes in the PLT directly. */ | |
4056 | rel.r_offset = (htab->elf.splt->output_section->vma | |
4057 | + htab->elf.splt->output_offset | |
4058 | + htab->lazy_plt->plt0_got1_offset); | |
4059 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, | |
4060 | R_386_32); | |
4061 | bfd_elf32_swap_reloc_out (output_bfd, &rel, | |
4062 | srelplt2->contents); | |
4063 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ | |
4064 | + 8. */ | |
4065 | rel.r_offset = (htab->elf.splt->output_section->vma | |
4066 | + htab->elf.splt->output_offset | |
4067 | + htab->lazy_plt->plt0_got2_offset); | |
4068 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, | |
4069 | R_386_32); | |
4070 | bfd_elf32_swap_reloc_out (output_bfd, &rel, | |
4071 | srelplt2->contents + | |
4072 | sizeof (Elf32_External_Rel)); | |
4073 | /* Correct the .rel.plt.unloaded relocations. */ | |
4074 | p = srelplt2->contents; | |
4075 | if (bfd_link_pic (info)) | |
4076 | p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel); | |
4077 | else | |
4078 | p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel); | |
eac338cf | 4079 | |
9577f60b | 4080 | for (; num_plts; num_plts--) |
1f78f649 | 4081 | { |
9577f60b | 4082 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); |
f604c2a2 | 4083 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, |
1f78f649 | 4084 | R_386_32); |
9577f60b L |
4085 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
4086 | p += sizeof (Elf32_External_Rel); | |
f604c2a2 | 4087 | |
9577f60b L |
4088 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); |
4089 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, | |
4090 | R_386_32); | |
4091 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); | |
4092 | p += sizeof (Elf32_External_Rel); | |
1f78f649 | 4093 | } |
eac338cf PB |
4094 | } |
4095 | } | |
252b5132 | 4096 | } |
fff53dae L |
4097 | } |
4098 | ||
aec6b87e L |
4099 | /* Fill PLT entries for undefined weak symbols in PIE. */ |
4100 | if (bfd_link_pie (info)) | |
4101 | bfd_hash_traverse (&info->hash->table, | |
4102 | elf_i386_pie_finish_undefweak_symbol, | |
4103 | info); | |
4104 | ||
b34976b6 | 4105 | return TRUE; |
252b5132 RH |
4106 | } |
4107 | ||
233cc9c1 L |
4108 | /* Fill PLT/GOT entries and allocate dynamic relocations for local |
4109 | STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table. | |
4110 | It has to be done before elf_link_sort_relocs is called so that | |
4111 | dynamic relocations are properly sorted. */ | |
4112 | ||
4113 | static bfd_boolean | |
4114 | elf_i386_output_arch_local_syms | |
4115 | (bfd *output_bfd ATTRIBUTE_UNUSED, | |
4116 | struct bfd_link_info *info, | |
4117 | void *flaginfo ATTRIBUTE_UNUSED, | |
4118 | int (*func) (void *, const char *, | |
4119 | Elf_Internal_Sym *, | |
4120 | asection *, | |
4121 | struct elf_link_hash_entry *) ATTRIBUTE_UNUSED) | |
4122 | { | |
0afcef53 L |
4123 | struct elf_x86_link_hash_table *htab |
4124 | = elf_x86_hash_table (info, I386_ELF_DATA); | |
233cc9c1 L |
4125 | if (htab == NULL) |
4126 | return FALSE; | |
4127 | ||
4128 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ | |
4129 | htab_traverse (htab->loc_hash_table, | |
4130 | elf_i386_finish_local_dynamic_symbol, | |
4131 | info); | |
4132 | ||
4133 | return TRUE; | |
4134 | } | |
4135 | ||
f604c2a2 L |
4136 | /* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all |
4137 | dynamic relocations. */ | |
4138 | ||
4139 | static long | |
4140 | elf_i386_get_synthetic_symtab (bfd *abfd, | |
4141 | long symcount ATTRIBUTE_UNUSED, | |
4142 | asymbol **syms ATTRIBUTE_UNUSED, | |
4143 | long dynsymcount, | |
4144 | asymbol **dynsyms, | |
4145 | asymbol **ret) | |
4146 | { | |
f493882d | 4147 | long count, i, n; |
f604c2a2 | 4148 | int j; |
f604c2a2 | 4149 | bfd_byte *plt_contents; |
f493882d | 4150 | long relsize; |
765e526c L |
4151 | const struct elf_x86_lazy_plt_layout *lazy_plt; |
4152 | const struct elf_x86_non_lazy_plt_layout *non_lazy_plt; | |
4153 | const struct elf_x86_lazy_plt_layout *lazy_ibt_plt; | |
4154 | const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt; | |
f604c2a2 L |
4155 | asection *plt; |
4156 | bfd_vma got_addr; | |
f493882d L |
4157 | enum elf_x86_plt_type plt_type; |
4158 | struct elf_x86_plt plts[] = | |
3972882e | 4159 | { |
f493882d L |
4160 | { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 }, |
4161 | { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }, | |
4162 | { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 }, | |
4163 | { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 } | |
f604c2a2 | 4164 | }; |
144bed8d | 4165 | |
f604c2a2 | 4166 | *ret = NULL; |
144bed8d | 4167 | |
f604c2a2 L |
4168 | if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0) |
4169 | return 0; | |
3972882e | 4170 | |
f604c2a2 L |
4171 | if (dynsymcount <= 0) |
4172 | return 0; | |
cca5b8b6 | 4173 | |
f604c2a2 L |
4174 | relsize = bfd_get_dynamic_reloc_upper_bound (abfd); |
4175 | if (relsize <= 0) | |
4176 | return -1; | |
cca5b8b6 | 4177 | |
f604c2a2 L |
4178 | non_lazy_plt = NULL; |
4179 | /* Silence GCC 6. */ | |
4180 | lazy_plt = NULL; | |
ee2fdd6f L |
4181 | non_lazy_ibt_plt = NULL; |
4182 | lazy_ibt_plt = NULL; | |
90c14f0c | 4183 | switch (get_elf_backend_data (abfd)->target_os) |
144bed8d | 4184 | { |
f604c2a2 | 4185 | case is_normal: |
3b4c3844 | 4186 | case is_solaris: |
f604c2a2 | 4187 | non_lazy_plt = &elf_i386_non_lazy_plt; |
ee2fdd6f L |
4188 | lazy_ibt_plt = &elf_i386_lazy_ibt_plt; |
4189 | non_lazy_ibt_plt = &elf_i386_non_lazy_ibt_plt; | |
f604c2a2 L |
4190 | /* Fall through */ |
4191 | case is_vxworks: | |
4192 | lazy_plt = &elf_i386_lazy_plt; | |
4193 | break; | |
90c14f0c L |
4194 | default: |
4195 | abort (); | |
f604c2a2 L |
4196 | } |
4197 | ||
4198 | got_addr = 0; | |
3972882e | 4199 | |
f604c2a2 L |
4200 | count = 0; |
4201 | for (j = 0; plts[j].name != NULL; j++) | |
4202 | { | |
4203 | plt = bfd_get_section_by_name (abfd, plts[j].name); | |
90efb642 | 4204 | if (plt == NULL || plt->size == 0) |
6f25f223 | 4205 | continue; |
533d0af0 | 4206 | |
f604c2a2 L |
4207 | /* Get the PLT section contents. */ |
4208 | plt_contents = (bfd_byte *) bfd_malloc (plt->size); | |
4209 | if (plt_contents == NULL) | |
4210 | break; | |
4211 | if (!bfd_get_section_contents (abfd, (asection *) plt, | |
4212 | plt_contents, 0, plt->size)) | |
4213 | { | |
4214 | free (plt_contents); | |
4215 | break; | |
4216 | } | |
4217 | ||
4218 | /* Check what kind of PLT it is. */ | |
4219 | plt_type = plt_unknown; | |
90efb642 L |
4220 | if (plts[j].type == plt_unknown |
4221 | && (plt->size >= (lazy_plt->plt0_entry_size | |
4222 | + lazy_plt->plt_entry_size))) | |
f604c2a2 L |
4223 | { |
4224 | /* Match lazy PLT first. */ | |
4225 | if (memcmp (plt_contents, lazy_plt->plt0_entry, | |
4226 | lazy_plt->plt0_got1_offset) == 0) | |
ee2fdd6f L |
4227 | { |
4228 | /* The fist entry in the lazy IBT PLT is the same as the | |
4229 | normal lazy PLT. */ | |
4230 | if (lazy_ibt_plt != NULL | |
90efb642 | 4231 | && (memcmp (plt_contents + lazy_ibt_plt->plt0_entry_size, |
ee2fdd6f L |
4232 | lazy_ibt_plt->plt_entry, |
4233 | lazy_ibt_plt->plt_got_offset) == 0)) | |
4234 | plt_type = plt_lazy | plt_second; | |
4235 | else | |
4236 | plt_type = plt_lazy; | |
4237 | } | |
f604c2a2 L |
4238 | else if (memcmp (plt_contents, lazy_plt->pic_plt0_entry, |
4239 | lazy_plt->plt0_got1_offset) == 0) | |
ee2fdd6f L |
4240 | { |
4241 | /* The fist entry in the PIC lazy IBT PLT is the same as | |
4242 | the normal PIC lazy PLT. */ | |
4243 | if (lazy_ibt_plt != NULL | |
90efb642 | 4244 | && (memcmp (plt_contents + lazy_ibt_plt->plt0_entry_size, |
ee2fdd6f L |
4245 | lazy_ibt_plt->pic_plt_entry, |
4246 | lazy_ibt_plt->plt_got_offset) == 0)) | |
4247 | plt_type = plt_lazy | plt_pic | plt_second; | |
4248 | else | |
4249 | plt_type = plt_lazy | plt_pic; | |
4250 | } | |
f604c2a2 L |
4251 | } |
4252 | ||
4253 | if (non_lazy_plt != NULL | |
90efb642 L |
4254 | && (plt_type == plt_unknown || plt_type == plt_non_lazy) |
4255 | && plt->size >= non_lazy_plt->plt_entry_size) | |
f604c2a2 L |
4256 | { |
4257 | /* Match non-lazy PLT. */ | |
4258 | if (memcmp (plt_contents, non_lazy_plt->plt_entry, | |
4259 | non_lazy_plt->plt_got_offset) == 0) | |
4260 | plt_type = plt_non_lazy; | |
4261 | else if (memcmp (plt_contents, non_lazy_plt->pic_plt_entry, | |
4262 | non_lazy_plt->plt_got_offset) == 0) | |
4263 | plt_type = plt_pic; | |
4264 | } | |
4265 | ||
ee2fdd6f | 4266 | if ((non_lazy_ibt_plt != NULL) |
90efb642 L |
4267 | && (plt_type == plt_unknown || plt_type == plt_second) |
4268 | && plt->size >= non_lazy_ibt_plt->plt_entry_size) | |
ee2fdd6f L |
4269 | { |
4270 | if (memcmp (plt_contents, | |
4271 | non_lazy_ibt_plt->plt_entry, | |
4272 | non_lazy_ibt_plt->plt_got_offset) == 0) | |
4273 | { | |
4274 | /* Match IBT PLT. */ | |
4275 | plt_type = plt_second; | |
4276 | non_lazy_plt = non_lazy_ibt_plt; | |
4277 | } | |
4278 | else if (memcmp (plt_contents, | |
4279 | non_lazy_ibt_plt->pic_plt_entry, | |
4280 | non_lazy_ibt_plt->plt_got_offset) == 0) | |
4281 | { | |
4282 | /* Match PIC IBT PLT. */ | |
4283 | plt_type = plt_second | plt_pic; | |
4284 | non_lazy_plt = non_lazy_ibt_plt; | |
4285 | } | |
4286 | } | |
4287 | ||
f604c2a2 | 4288 | if (plt_type == plt_unknown) |
37c0b6ee L |
4289 | { |
4290 | free (plt_contents); | |
4291 | continue; | |
4292 | } | |
3972882e | 4293 | |
f604c2a2 L |
4294 | plts[j].sec = plt; |
4295 | plts[j].type = plt_type; | |
ec1f73bb | 4296 | |
f604c2a2 L |
4297 | if ((plt_type & plt_lazy)) |
4298 | { | |
4299 | plts[j].plt_got_offset = lazy_plt->plt_got_offset; | |
4300 | plts[j].plt_entry_size = lazy_plt->plt_entry_size; | |
4301 | /* Skip PLT0 in lazy PLT. */ | |
4302 | i = 1; | |
4303 | } | |
4304 | else | |
4305 | { | |
4306 | plts[j].plt_got_offset = non_lazy_plt->plt_got_offset; | |
4307 | plts[j].plt_entry_size = non_lazy_plt->plt_entry_size; | |
4308 | i = 0; | |
4309 | } | |
fca6ae69 | 4310 | |
ee2fdd6f L |
4311 | /* Skip lazy PLT when the second PLT is used. */ |
4312 | if ((plt_type & (plt_lazy | plt_second)) | |
4313 | == (plt_lazy | plt_second)) | |
4314 | plts[j].count = 0; | |
4315 | else | |
4316 | { | |
4317 | n = plt->size / plts[j].plt_entry_size; | |
4318 | plts[j].count = n; | |
4319 | count += n - i; | |
4320 | } | |
f604c2a2 L |
4321 | |
4322 | plts[j].contents = plt_contents; | |
4323 | ||
4324 | /* The _GLOBAL_OFFSET_TABLE_ address is needed. */ | |
4325 | if ((plt_type & plt_pic)) | |
4326 | got_addr = (bfd_vma) -1; | |
144bed8d L |
4327 | } |
4328 | ||
f493882d L |
4329 | return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize, |
4330 | got_addr, plts, dynsyms, | |
4331 | ret); | |
4c45e5c9 JJ |
4332 | } |
4333 | ||
f604c2a2 L |
4334 | /* Set up i386 GNU properties. Return the first relocatable ELF input |
4335 | with GNU properties if found. Otherwise, return NULL. */ | |
4336 | ||
4337 | static bfd * | |
4338 | elf_i386_link_setup_gnu_properties (struct bfd_link_info *info) | |
4339 | { | |
1de031c8 | 4340 | struct elf_x86_init_table init_table; |
f604c2a2 | 4341 | |
90c14f0c | 4342 | switch (get_elf_backend_data (info->output_bfd)->target_os) |
f604c2a2 L |
4343 | { |
4344 | case is_normal: | |
3b4c3844 | 4345 | case is_solaris: |
851b6fa1 | 4346 | init_table.plt0_pad_byte = 0x0; |
1de031c8 L |
4347 | init_table.lazy_plt = &elf_i386_lazy_plt; |
4348 | init_table.non_lazy_plt = &elf_i386_non_lazy_plt; | |
4349 | init_table.lazy_ibt_plt = &elf_i386_lazy_ibt_plt; | |
4350 | init_table.non_lazy_ibt_plt = &elf_i386_non_lazy_ibt_plt; | |
f604c2a2 L |
4351 | break; |
4352 | case is_vxworks: | |
851b6fa1 | 4353 | init_table.plt0_pad_byte = 0x90; |
1de031c8 L |
4354 | init_table.lazy_plt = &elf_i386_lazy_plt; |
4355 | init_table.non_lazy_plt = NULL; | |
4356 | init_table.lazy_ibt_plt = NULL; | |
4357 | init_table.non_lazy_ibt_plt = NULL; | |
f604c2a2 | 4358 | break; |
90c14f0c L |
4359 | default: |
4360 | abort (); | |
f604c2a2 L |
4361 | } |
4362 | ||
1de031c8 L |
4363 | init_table.r_info = elf32_r_info; |
4364 | init_table.r_sym = elf32_r_sym; | |
7a382c1c | 4365 | |
1de031c8 | 4366 | return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table); |
f604c2a2 L |
4367 | } |
4368 | ||
6d00b590 | 4369 | #define TARGET_LITTLE_SYM i386_elf32_vec |
252b5132 RH |
4370 | #define TARGET_LITTLE_NAME "elf32-i386" |
4371 | #define ELF_ARCH bfd_arch_i386 | |
ae95ffa6 | 4372 | #define ELF_TARGET_ID I386_ELF_DATA |
252b5132 RH |
4373 | #define ELF_MACHINE_CODE EM_386 |
4374 | #define ELF_MAXPAGESIZE 0x1000 | |
252b5132 RH |
4375 | |
4376 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 4377 | #define elf_backend_can_refcount 1 |
252b5132 RH |
4378 | #define elf_backend_want_got_plt 1 |
4379 | #define elf_backend_plt_readonly 1 | |
4380 | #define elf_backend_want_plt_sym 0 | |
4381 | #define elf_backend_got_header_size 12 | |
e41b3a13 | 4382 | #define elf_backend_plt_alignment 4 |
64f52338 | 4383 | #define elf_backend_dtrel_excludes_plt 1 |
f7483970 | 4384 | #define elf_backend_extern_protected_data 1 |
bedfd056 | 4385 | #define elf_backend_caches_rawsize 1 |
5474d94f | 4386 | #define elf_backend_want_dynrelro 1 |
252b5132 | 4387 | |
8c29f035 AM |
4388 | /* Support RELA for objdump of prelink objects. */ |
4389 | #define elf_info_to_howto elf_i386_info_to_howto_rel | |
dd5724d5 AM |
4390 | #define elf_info_to_howto_rel elf_i386_info_to_howto_rel |
4391 | ||
dd5724d5 | 4392 | #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name |
dd5724d5 | 4393 | #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup |
13285a1b | 4394 | #define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup |
3972882e | 4395 | #define bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab |
dd5724d5 | 4396 | |
13285a1b | 4397 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
dd5724d5 | 4398 | #define elf_backend_check_relocs elf_i386_check_relocs |
f604c2a2 | 4399 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
0ac8d2ca | 4400 | #define elf_backend_fake_sections elf_i386_fake_sections |
dd5724d5 AM |
4401 | #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections |
4402 | #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol | |
233cc9c1 | 4403 | #define elf_backend_output_arch_local_syms elf_i386_output_arch_local_syms |
c5fccbec DJ |
4404 | #define elf_backend_grok_prstatus elf_i386_grok_prstatus |
4405 | #define elf_backend_grok_psinfo elf_i386_grok_psinfo | |
db6751f2 | 4406 | #define elf_backend_reloc_type_class elf_i386_reloc_type_class |
0ac8d2ca | 4407 | #define elf_backend_relocate_section elf_i386_relocate_section |
f604c2a2 | 4408 | #define elf_backend_setup_gnu_properties elf_i386_link_setup_gnu_properties |
9f857535 | 4409 | #define elf_backend_hide_symbol _bfd_x86_elf_hide_symbol |
dd5724d5 | 4410 | |
a2f63b2e MR |
4411 | #define elf_backend_linux_prpsinfo32_ugid16 TRUE |
4412 | ||
8f56f7a2 L |
4413 | #define elf32_bed elf32_i386_bed |
4414 | ||
252b5132 | 4415 | #include "elf32-target.h" |
2bc3c89a AM |
4416 | |
4417 | /* FreeBSD support. */ | |
4418 | ||
4419 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 4420 | #define TARGET_LITTLE_SYM i386_elf32_fbsd_vec |
2bc3c89a AM |
4421 | #undef TARGET_LITTLE_NAME |
4422 | #define TARGET_LITTLE_NAME "elf32-i386-freebsd" | |
d1036acb L |
4423 | #undef ELF_OSABI |
4424 | #define ELF_OSABI ELFOSABI_FREEBSD | |
2bc3c89a AM |
4425 | |
4426 | /* The kernel recognizes executables as valid only if they carry a | |
4427 | "FreeBSD" label in the ELF header. So we put this label on all | |
4428 | executables and (for simplicity) also all other object files. */ | |
4429 | ||
ed7e9d0b AM |
4430 | static bfd_boolean |
4431 | elf_i386_fbsd_init_file_header (bfd *abfd, struct bfd_link_info *info) | |
2bc3c89a | 4432 | { |
ed7e9d0b AM |
4433 | if (!_bfd_elf_init_file_header (abfd, info)) |
4434 | return FALSE; | |
2bc3c89a | 4435 | |
2bc3c89a | 4436 | #ifdef OLD_FREEBSD_ABI_LABEL |
cf7363b4 L |
4437 | { |
4438 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
4439 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
4440 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
4441 | } | |
caf47ea6 | 4442 | #endif |
ed7e9d0b | 4443 | return TRUE; |
2bc3c89a AM |
4444 | } |
4445 | ||
ed7e9d0b AM |
4446 | #undef elf_backend_init_file_header |
4447 | #define elf_backend_init_file_header elf_i386_fbsd_init_file_header | |
571fe01f NC |
4448 | #undef elf32_bed |
4449 | #define elf32_bed elf32_i386_fbsd_bed | |
2bc3c89a | 4450 | |
d8045f23 NC |
4451 | #undef elf_backend_add_symbol_hook |
4452 | ||
2bc3c89a | 4453 | #include "elf32-target.h" |
eac338cf | 4454 | |
ed7e9d0b AM |
4455 | #undef elf_backend_init_file_header |
4456 | ||
a6cc6b3b RO |
4457 | /* Solaris 2. */ |
4458 | ||
4459 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 4460 | #define TARGET_LITTLE_SYM i386_elf32_sol2_vec |
a6cc6b3b RO |
4461 | #undef TARGET_LITTLE_NAME |
4462 | #define TARGET_LITTLE_NAME "elf32-i386-sol2" | |
4463 | ||
90c14f0c L |
4464 | #undef ELF_TARGET_OS |
4465 | #define ELF_TARGET_OS is_solaris | |
3b4c3844 | 4466 | |
a6cc6b3b RO |
4467 | /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE |
4468 | objects won't be recognized. */ | |
4469 | #undef ELF_OSABI | |
4470 | ||
4471 | #undef elf32_bed | |
4472 | #define elf32_bed elf32_i386_sol2_bed | |
4473 | ||
7dc98aea RO |
4474 | /* The 32-bit static TLS arena size is rounded to the nearest 8-byte |
4475 | boundary. */ | |
84865015 | 4476 | #undef elf_backend_static_tls_alignment |
7dc98aea RO |
4477 | #define elf_backend_static_tls_alignment 8 |
4478 | ||
a6cc6b3b RO |
4479 | /* The Solaris 2 ABI requires a plt symbol on all platforms. |
4480 | ||
4481 | Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output | |
4482 | File, p.63. */ | |
84865015 | 4483 | #undef elf_backend_want_plt_sym |
a6cc6b3b RO |
4484 | #define elf_backend_want_plt_sym 1 |
4485 | ||
84865015 NC |
4486 | #undef elf_backend_strtab_flags |
4487 | #define elf_backend_strtab_flags SHF_STRINGS | |
4488 | ||
5522f910 | 4489 | /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which |
07d6d2b8 | 4490 | has a type >= SHT_LOOS. Returns TRUE if these fields were initialised |
5522f910 NC |
4491 | FALSE otherwise. ISECTION is the best guess matching section from the |
4492 | input bfd IBFD, but it might be NULL. */ | |
4493 | ||
84865015 | 4494 | static bfd_boolean |
5522f910 NC |
4495 | elf32_i386_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED, |
4496 | bfd *obfd ATTRIBUTE_UNUSED, | |
4497 | const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED, | |
4498 | Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED) | |
84865015 NC |
4499 | { |
4500 | /* PR 19938: FIXME: Need to add code for setting the sh_info | |
5522f910 NC |
4501 | and sh_link fields of Solaris specific section types. */ |
4502 | return FALSE; | |
84865015 | 4503 | |
5522f910 | 4504 | /* Based upon Oracle Solaris 11.3 Linkers and Libraries Guide, Ch. 13, |
84865015 NC |
4505 | Object File Format, Table 13-9 ELF sh_link and sh_info Interpretation: |
4506 | ||
4507 | http://docs.oracle.com/cd/E53394_01/html/E54813/chapter6-94076.html#scrolltoc | |
4508 | ||
4509 | The following values should be set: | |
07d6d2b8 AM |
4510 | |
4511 | Type Link Info | |
84865015 NC |
4512 | ----------------------------------------------------------------------------- |
4513 | SHT_SUNW_ancillary The section header index of 0 | |
07d6d2b8 AM |
4514 | [0x6fffffee] the associated string table. |
4515 | ||
84865015 | 4516 | SHT_SUNW_capinfo The section header index of For a dynamic object, the |
07d6d2b8 AM |
4517 | [0x6ffffff0] the associated symbol table. section header index of |
4518 | the associated | |
84865015 NC |
4519 | SHT_SUNW_capchain table, |
4520 | otherwise 0. | |
4521 | ||
4522 | SHT_SUNW_symsort The section header index of 0 | |
07d6d2b8 | 4523 | [0x6ffffff1] the associated symbol table. |
84865015 NC |
4524 | |
4525 | SHT_SUNW_tlssort The section header index of 0 | |
07d6d2b8 AM |
4526 | [0x6ffffff2] the associated symbol table. |
4527 | ||
4528 | SHT_SUNW_LDYNSYM The section header index of One greater than the | |
4529 | [0x6ffffff3] the associated string table. symbol table index of the | |
4530 | This index is the same string last local symbol, | |
84865015 | 4531 | table used by the SHT_DYNSYM STB_LOCAL. Since |
07d6d2b8 AM |
4532 | section. SHT_SUNW_LDYNSYM only |
4533 | contains local symbols, | |
84865015 NC |
4534 | sh_info is equivalent to |
4535 | the number of symbols in | |
4536 | the table. | |
4537 | ||
07d6d2b8 AM |
4538 | SHT_SUNW_cap If symbol capabilities exist, If any capabilities refer |
4539 | [0x6ffffff5] the section header index of to named strings, the | |
4540 | the associated section header index of | |
4541 | SHT_SUNW_capinfo table, the associated string | |
4542 | otherwise 0. table, otherwise 0. | |
84865015 | 4543 | |
07d6d2b8 AM |
4544 | SHT_SUNW_move The section header index of 0 |
4545 | [0x6ffffffa] the associated symbol table. | |
4546 | ||
4547 | SHT_SUNW_COMDAT 0 0 | |
84865015 NC |
4548 | [0x6ffffffb] |
4549 | ||
4550 | SHT_SUNW_syminfo The section header index of The section header index | |
07d6d2b8 AM |
4551 | [0x6ffffffc] the associated symbol table. of the associated |
4552 | .dynamic section. | |
84865015 | 4553 | |
07d6d2b8 AM |
4554 | SHT_SUNW_verdef The section header index of The number of version |
4555 | [0x6ffffffd] the associated string table. definitions within the | |
4556 | section. | |
84865015 NC |
4557 | |
4558 | SHT_SUNW_verneed The section header index of The number of version | |
07d6d2b8 AM |
4559 | [0x6ffffffe] the associated string table. dependencies within the |
4560 | section. | |
84865015 | 4561 | |
07d6d2b8 AM |
4562 | SHT_SUNW_versym The section header index of 0 |
4563 | [0x6fffffff] the associated symbol table. */ | |
84865015 NC |
4564 | } |
4565 | ||
5522f910 NC |
4566 | #undef elf_backend_copy_special_section_fields |
4567 | #define elf_backend_copy_special_section_fields elf32_i386_copy_solaris_special_section_fields | |
84865015 | 4568 | |
a6cc6b3b RO |
4569 | #include "elf32-target.h" |
4570 | ||
bf64a951 L |
4571 | /* Intel MCU support. */ |
4572 | ||
4573 | static bfd_boolean | |
4574 | elf32_iamcu_elf_object_p (bfd *abfd) | |
4575 | { | |
4576 | /* Set the right machine number for an IAMCU elf32 file. */ | |
4577 | bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu); | |
4578 | return TRUE; | |
4579 | } | |
4580 | ||
4581 | #undef TARGET_LITTLE_SYM | |
4582 | #define TARGET_LITTLE_SYM iamcu_elf32_vec | |
4583 | #undef TARGET_LITTLE_NAME | |
4584 | #define TARGET_LITTLE_NAME "elf32-iamcu" | |
84865015 | 4585 | #undef ELF_ARCH |
bf64a951 L |
4586 | #define ELF_ARCH bfd_arch_iamcu |
4587 | ||
4588 | #undef ELF_MACHINE_CODE | |
4589 | #define ELF_MACHINE_CODE EM_IAMCU | |
4590 | ||
90c14f0c | 4591 | #undef ELF_TARGET_OS |
bf64a951 L |
4592 | #undef ELF_OSABI |
4593 | ||
4594 | #undef elf32_bed | |
4595 | #define elf32_bed elf32_iamcu_bed | |
4596 | ||
4597 | #undef elf_backend_object_p | |
4598 | #define elf_backend_object_p elf32_iamcu_elf_object_p | |
4599 | ||
4600 | #undef elf_backend_static_tls_alignment | |
4601 | ||
4602 | #undef elf_backend_want_plt_sym | |
07d6d2b8 | 4603 | #define elf_backend_want_plt_sym 0 |
bf64a951 | 4604 | |
84865015 | 4605 | #undef elf_backend_strtab_flags |
5522f910 | 4606 | #undef elf_backend_copy_special_section_fields |
84865015 | 4607 | |
bf64a951 L |
4608 | #include "elf32-target.h" |
4609 | ||
4610 | /* Restore defaults. */ | |
4611 | #undef ELF_ARCH | |
4612 | #define ELF_ARCH bfd_arch_i386 | |
4613 | #undef ELF_MACHINE_CODE | |
4614 | #define ELF_MACHINE_CODE EM_386 | |
cc574a35 | 4615 | #undef elf_backend_object_p |
bf64a951 | 4616 | |
eac338cf PB |
4617 | /* VxWorks support. */ |
4618 | ||
4619 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 4620 | #define TARGET_LITTLE_SYM i386_elf32_vxworks_vec |
eac338cf PB |
4621 | #undef TARGET_LITTLE_NAME |
4622 | #define TARGET_LITTLE_NAME "elf32-i386-vxworks" | |
d1036acb | 4623 | #undef ELF_OSABI |
1587442d L |
4624 | #undef ELF_MAXPAGESIZE |
4625 | #define ELF_MAXPAGESIZE 0x1000 | |
a27e4371 RM |
4626 | #undef elf_backend_plt_alignment |
4627 | #define elf_backend_plt_alignment 4 | |
eac338cf | 4628 | |
90c14f0c L |
4629 | #undef ELF_TARGET_OS |
4630 | #define ELF_TARGET_OS is_vxworks | |
eac338cf | 4631 | |
13285a1b | 4632 | #undef elf_backend_relocs_compatible |
eac338cf PB |
4633 | #undef elf_backend_add_symbol_hook |
4634 | #define elf_backend_add_symbol_hook \ | |
4635 | elf_vxworks_add_symbol_hook | |
4636 | #undef elf_backend_link_output_symbol_hook | |
4637 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 4638 | elf_vxworks_link_output_symbol_hook |
eac338cf PB |
4639 | #undef elf_backend_emit_relocs |
4640 | #define elf_backend_emit_relocs elf_vxworks_emit_relocs | |
4641 | #undef elf_backend_final_write_processing | |
4642 | #define elf_backend_final_write_processing \ | |
4643 | elf_vxworks_final_write_processing | |
7dc98aea | 4644 | #undef elf_backend_static_tls_alignment |
eac338cf PB |
4645 | |
4646 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
4647 | define it. */ | |
4648 | #undef elf_backend_want_plt_sym | |
4649 | #define elf_backend_want_plt_sym 1 | |
4650 | ||
4651 | #undef elf32_bed | |
4652 | #define elf32_bed elf32_i386_vxworks_bed | |
4653 | ||
4654 | #include "elf32-target.h" |