Commit | Line | Data |
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252b5132 | 1 | /* Intel 80386/80486-specific support for 32-bit ELF |
b2a8e766 | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, |
61315175 | 3 | 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 |
9f973f28 | 4 | Free Software Foundation, Inc. |
252b5132 | 5 | |
571fe01f | 6 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 7 | |
571fe01f NC |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 10 | the Free Software Foundation; either version 3 of the License, or |
571fe01f | 11 | (at your option) any later version. |
252b5132 | 12 | |
571fe01f NC |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
571fe01f NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
cd123cb7 NC |
20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
21 | MA 02110-1301, USA. */ | |
252b5132 | 22 | |
252b5132 | 23 | #include "sysdep.h" |
3db64b00 | 24 | #include "bfd.h" |
252b5132 RH |
25 | #include "bfdlink.h" |
26 | #include "libbfd.h" | |
27 | #include "elf-bfd.h" | |
5a68afcf | 28 | #include "elf-nacl.h" |
eac338cf | 29 | #include "elf-vxworks.h" |
142411ca | 30 | #include "bfd_stdint.h" |
c25bc9fc L |
31 | #include "objalloc.h" |
32 | #include "hashtab.h" | |
e41b3a13 | 33 | #include "dwarf2.h" |
252b5132 | 34 | |
55fd94b0 AM |
35 | /* 386 uses REL relocations instead of RELA. */ |
36 | #define USE_REL 1 | |
252b5132 RH |
37 | |
38 | #include "elf/i386.h" | |
39 | ||
40 | static reloc_howto_type elf_howto_table[]= | |
41 | { | |
b34976b6 | 42 | HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield, |
1b452ec6 | 43 | bfd_elf_generic_reloc, "R_386_NONE", |
b34976b6 AM |
44 | TRUE, 0x00000000, 0x00000000, FALSE), |
45 | HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 46 | bfd_elf_generic_reloc, "R_386_32", |
b34976b6 AM |
47 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
48 | HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 49 | bfd_elf_generic_reloc, "R_386_PC32", |
b34976b6 AM |
50 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
51 | HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 52 | bfd_elf_generic_reloc, "R_386_GOT32", |
b34976b6 AM |
53 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
54 | HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 55 | bfd_elf_generic_reloc, "R_386_PLT32", |
b34976b6 AM |
56 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
57 | HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 58 | bfd_elf_generic_reloc, "R_386_COPY", |
b34976b6 AM |
59 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
60 | HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 61 | bfd_elf_generic_reloc, "R_386_GLOB_DAT", |
b34976b6 AM |
62 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
63 | HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 64 | bfd_elf_generic_reloc, "R_386_JUMP_SLOT", |
b34976b6 AM |
65 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
66 | HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 67 | bfd_elf_generic_reloc, "R_386_RELATIVE", |
b34976b6 AM |
68 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
69 | HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 70 | bfd_elf_generic_reloc, "R_386_GOTOFF", |
b34976b6 AM |
71 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
72 | HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, | |
1b452ec6 | 73 | bfd_elf_generic_reloc, "R_386_GOTPC", |
b34976b6 | 74 | TRUE, 0xffffffff, 0xffffffff, TRUE), |
1b452ec6 | 75 | |
dc47f327 AM |
76 | /* We have a gap in the reloc numbers here. |
77 | R_386_standard counts the number up to this point, and | |
78 | R_386_ext_offset is the value to subtract from a reloc type of | |
79 | R_386_16 thru R_386_PC8 to form an index into this table. */ | |
55fd94b0 AM |
80 | #define R_386_standard (R_386_GOTPC + 1) |
81 | #define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard) | |
1b452ec6 | 82 | |
37e55690 | 83 | /* These relocs are a GNU extension. */ |
b34976b6 | 84 | HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
37e55690 | 85 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF", |
b34976b6 AM |
86 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
87 | HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 88 | bfd_elf_generic_reloc, "R_386_TLS_IE", |
b34976b6 AM |
89 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
90 | HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
37e55690 | 91 | bfd_elf_generic_reloc, "R_386_TLS_GOTIE", |
b34976b6 AM |
92 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
93 | HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 94 | bfd_elf_generic_reloc, "R_386_TLS_LE", |
b34976b6 AM |
95 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
96 | HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 97 | bfd_elf_generic_reloc, "R_386_TLS_GD", |
b34976b6 AM |
98 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
99 | HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 100 | bfd_elf_generic_reloc, "R_386_TLS_LDM", |
b34976b6 AM |
101 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
102 | HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 103 | bfd_elf_generic_reloc, "R_386_16", |
b34976b6 | 104 | TRUE, 0xffff, 0xffff, FALSE), |
b0360d8c | 105 | HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, |
1b452ec6 | 106 | bfd_elf_generic_reloc, "R_386_PC16", |
b34976b6 AM |
107 | TRUE, 0xffff, 0xffff, TRUE), |
108 | HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, | |
1b452ec6 | 109 | bfd_elf_generic_reloc, "R_386_8", |
b34976b6 AM |
110 | TRUE, 0xff, 0xff, FALSE), |
111 | HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, | |
1b452ec6 | 112 | bfd_elf_generic_reloc, "R_386_PC8", |
b34976b6 | 113 | TRUE, 0xff, 0xff, TRUE), |
dc47f327 | 114 | |
55fd94b0 AM |
115 | #define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset) |
116 | #define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext) | |
13ae64f3 | 117 | /* These are common with Solaris TLS implementation. */ |
b34976b6 | 118 | HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
13ae64f3 | 119 | bfd_elf_generic_reloc, "R_386_TLS_LDO_32", |
b34976b6 AM |
120 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
121 | HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 122 | bfd_elf_generic_reloc, "R_386_TLS_IE_32", |
b34976b6 AM |
123 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
124 | HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 125 | bfd_elf_generic_reloc, "R_386_TLS_LE_32", |
b34976b6 AM |
126 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
127 | HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 128 | bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32", |
b34976b6 AM |
129 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
130 | HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 131 | bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32", |
b34976b6 AM |
132 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
133 | HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
13ae64f3 | 134 | bfd_elf_generic_reloc, "R_386_TLS_TPOFF32", |
b34976b6 | 135 | TRUE, 0xffffffff, 0xffffffff, FALSE), |
1788fc08 L |
136 | HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned, |
137 | bfd_elf_generic_reloc, "R_386_SIZE32", | |
138 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
67a4f2b7 AO |
139 | HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
140 | bfd_elf_generic_reloc, "R_386_TLS_GOTDESC", | |
141 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
142 | HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont, | |
143 | bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL", | |
144 | FALSE, 0, 0, FALSE), | |
145 | HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, | |
146 | bfd_elf_generic_reloc, "R_386_TLS_DESC", | |
147 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
cbe950e9 L |
148 | HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
149 | bfd_elf_generic_reloc, "R_386_IRELATIVE", | |
150 | TRUE, 0xffffffff, 0xffffffff, FALSE), | |
13ae64f3 JJ |
151 | |
152 | /* Another gap. */ | |
cbe950e9 L |
153 | #define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset) |
154 | #define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative) | |
252b5132 RH |
155 | |
156 | /* GNU extension to record C++ vtable hierarchy. */ | |
252b5132 RH |
157 | HOWTO (R_386_GNU_VTINHERIT, /* type */ |
158 | 0, /* rightshift */ | |
159 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
160 | 0, /* bitsize */ | |
b34976b6 | 161 | FALSE, /* pc_relative */ |
252b5132 RH |
162 | 0, /* bitpos */ |
163 | complain_overflow_dont, /* complain_on_overflow */ | |
164 | NULL, /* special_function */ | |
165 | "R_386_GNU_VTINHERIT", /* name */ | |
b34976b6 | 166 | FALSE, /* partial_inplace */ |
252b5132 RH |
167 | 0, /* src_mask */ |
168 | 0, /* dst_mask */ | |
b34976b6 | 169 | FALSE), /* pcrel_offset */ |
252b5132 RH |
170 | |
171 | /* GNU extension to record C++ vtable member usage. */ | |
252b5132 RH |
172 | HOWTO (R_386_GNU_VTENTRY, /* type */ |
173 | 0, /* rightshift */ | |
174 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
175 | 0, /* bitsize */ | |
b34976b6 | 176 | FALSE, /* pc_relative */ |
252b5132 RH |
177 | 0, /* bitpos */ |
178 | complain_overflow_dont, /* complain_on_overflow */ | |
179 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
180 | "R_386_GNU_VTENTRY", /* name */ | |
b34976b6 | 181 | FALSE, /* partial_inplace */ |
252b5132 RH |
182 | 0, /* src_mask */ |
183 | 0, /* dst_mask */ | |
b34976b6 | 184 | FALSE) /* pcrel_offset */ |
dc47f327 | 185 | |
55fd94b0 | 186 | #define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset) |
dc47f327 AM |
187 | |
188 | }; | |
189 | ||
252b5132 | 190 | #ifdef DEBUG_GEN_RELOC |
55fd94b0 AM |
191 | #define TRACE(str) \ |
192 | fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str) | |
252b5132 RH |
193 | #else |
194 | #define TRACE(str) | |
195 | #endif | |
196 | ||
197 | static reloc_howto_type * | |
55fd94b0 AM |
198 | elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
199 | bfd_reloc_code_real_type code) | |
252b5132 RH |
200 | { |
201 | switch (code) | |
202 | { | |
203 | case BFD_RELOC_NONE: | |
204 | TRACE ("BFD_RELOC_NONE"); | |
55fd94b0 | 205 | return &elf_howto_table[R_386_NONE]; |
252b5132 RH |
206 | |
207 | case BFD_RELOC_32: | |
208 | TRACE ("BFD_RELOC_32"); | |
55fd94b0 | 209 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
210 | |
211 | case BFD_RELOC_CTOR: | |
212 | TRACE ("BFD_RELOC_CTOR"); | |
55fd94b0 | 213 | return &elf_howto_table[R_386_32]; |
252b5132 RH |
214 | |
215 | case BFD_RELOC_32_PCREL: | |
216 | TRACE ("BFD_RELOC_PC32"); | |
55fd94b0 | 217 | return &elf_howto_table[R_386_PC32]; |
252b5132 RH |
218 | |
219 | case BFD_RELOC_386_GOT32: | |
220 | TRACE ("BFD_RELOC_386_GOT32"); | |
55fd94b0 | 221 | return &elf_howto_table[R_386_GOT32]; |
252b5132 RH |
222 | |
223 | case BFD_RELOC_386_PLT32: | |
224 | TRACE ("BFD_RELOC_386_PLT32"); | |
55fd94b0 | 225 | return &elf_howto_table[R_386_PLT32]; |
252b5132 RH |
226 | |
227 | case BFD_RELOC_386_COPY: | |
228 | TRACE ("BFD_RELOC_386_COPY"); | |
55fd94b0 | 229 | return &elf_howto_table[R_386_COPY]; |
252b5132 RH |
230 | |
231 | case BFD_RELOC_386_GLOB_DAT: | |
232 | TRACE ("BFD_RELOC_386_GLOB_DAT"); | |
55fd94b0 | 233 | return &elf_howto_table[R_386_GLOB_DAT]; |
252b5132 RH |
234 | |
235 | case BFD_RELOC_386_JUMP_SLOT: | |
236 | TRACE ("BFD_RELOC_386_JUMP_SLOT"); | |
55fd94b0 | 237 | return &elf_howto_table[R_386_JUMP_SLOT]; |
252b5132 RH |
238 | |
239 | case BFD_RELOC_386_RELATIVE: | |
240 | TRACE ("BFD_RELOC_386_RELATIVE"); | |
55fd94b0 | 241 | return &elf_howto_table[R_386_RELATIVE]; |
252b5132 RH |
242 | |
243 | case BFD_RELOC_386_GOTOFF: | |
244 | TRACE ("BFD_RELOC_386_GOTOFF"); | |
55fd94b0 | 245 | return &elf_howto_table[R_386_GOTOFF]; |
252b5132 RH |
246 | |
247 | case BFD_RELOC_386_GOTPC: | |
248 | TRACE ("BFD_RELOC_386_GOTPC"); | |
55fd94b0 | 249 | return &elf_howto_table[R_386_GOTPC]; |
252b5132 | 250 | |
37e55690 JJ |
251 | /* These relocs are a GNU extension. */ |
252 | case BFD_RELOC_386_TLS_TPOFF: | |
253 | TRACE ("BFD_RELOC_386_TLS_TPOFF"); | |
55fd94b0 | 254 | return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset]; |
37e55690 JJ |
255 | |
256 | case BFD_RELOC_386_TLS_IE: | |
257 | TRACE ("BFD_RELOC_386_TLS_IE"); | |
55fd94b0 | 258 | return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset]; |
37e55690 JJ |
259 | |
260 | case BFD_RELOC_386_TLS_GOTIE: | |
261 | TRACE ("BFD_RELOC_386_TLS_GOTIE"); | |
55fd94b0 | 262 | return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset]; |
37e55690 | 263 | |
13ae64f3 JJ |
264 | case BFD_RELOC_386_TLS_LE: |
265 | TRACE ("BFD_RELOC_386_TLS_LE"); | |
55fd94b0 | 266 | return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset]; |
13ae64f3 JJ |
267 | |
268 | case BFD_RELOC_386_TLS_GD: | |
269 | TRACE ("BFD_RELOC_386_TLS_GD"); | |
55fd94b0 | 270 | return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset]; |
13ae64f3 JJ |
271 | |
272 | case BFD_RELOC_386_TLS_LDM: | |
273 | TRACE ("BFD_RELOC_386_TLS_LDM"); | |
55fd94b0 | 274 | return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset]; |
13ae64f3 | 275 | |
252b5132 RH |
276 | case BFD_RELOC_16: |
277 | TRACE ("BFD_RELOC_16"); | |
55fd94b0 | 278 | return &elf_howto_table[R_386_16 - R_386_ext_offset]; |
252b5132 RH |
279 | |
280 | case BFD_RELOC_16_PCREL: | |
281 | TRACE ("BFD_RELOC_16_PCREL"); | |
55fd94b0 | 282 | return &elf_howto_table[R_386_PC16 - R_386_ext_offset]; |
252b5132 RH |
283 | |
284 | case BFD_RELOC_8: | |
285 | TRACE ("BFD_RELOC_8"); | |
55fd94b0 | 286 | return &elf_howto_table[R_386_8 - R_386_ext_offset]; |
252b5132 RH |
287 | |
288 | case BFD_RELOC_8_PCREL: | |
289 | TRACE ("BFD_RELOC_8_PCREL"); | |
55fd94b0 | 290 | return &elf_howto_table[R_386_PC8 - R_386_ext_offset]; |
252b5132 | 291 | |
13ae64f3 JJ |
292 | /* Common with Sun TLS implementation. */ |
293 | case BFD_RELOC_386_TLS_LDO_32: | |
294 | TRACE ("BFD_RELOC_386_TLS_LDO_32"); | |
55fd94b0 | 295 | return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset]; |
13ae64f3 JJ |
296 | |
297 | case BFD_RELOC_386_TLS_IE_32: | |
298 | TRACE ("BFD_RELOC_386_TLS_IE_32"); | |
55fd94b0 | 299 | return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
300 | |
301 | case BFD_RELOC_386_TLS_LE_32: | |
302 | TRACE ("BFD_RELOC_386_TLS_LE_32"); | |
55fd94b0 | 303 | return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset]; |
13ae64f3 JJ |
304 | |
305 | case BFD_RELOC_386_TLS_DTPMOD32: | |
306 | TRACE ("BFD_RELOC_386_TLS_DTPMOD32"); | |
55fd94b0 | 307 | return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset]; |
13ae64f3 JJ |
308 | |
309 | case BFD_RELOC_386_TLS_DTPOFF32: | |
310 | TRACE ("BFD_RELOC_386_TLS_DTPOFF32"); | |
55fd94b0 | 311 | return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset]; |
13ae64f3 JJ |
312 | |
313 | case BFD_RELOC_386_TLS_TPOFF32: | |
314 | TRACE ("BFD_RELOC_386_TLS_TPOFF32"); | |
55fd94b0 | 315 | return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset]; |
13ae64f3 | 316 | |
1788fc08 L |
317 | case BFD_RELOC_SIZE32: |
318 | TRACE ("BFD_RELOC_SIZE32"); | |
319 | return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset]; | |
320 | ||
67a4f2b7 AO |
321 | case BFD_RELOC_386_TLS_GOTDESC: |
322 | TRACE ("BFD_RELOC_386_TLS_GOTDESC"); | |
323 | return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset]; | |
324 | ||
325 | case BFD_RELOC_386_TLS_DESC_CALL: | |
326 | TRACE ("BFD_RELOC_386_TLS_DESC_CALL"); | |
327 | return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset]; | |
328 | ||
329 | case BFD_RELOC_386_TLS_DESC: | |
330 | TRACE ("BFD_RELOC_386_TLS_DESC"); | |
331 | return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset]; | |
332 | ||
cbe950e9 L |
333 | case BFD_RELOC_386_IRELATIVE: |
334 | TRACE ("BFD_RELOC_386_IRELATIVE"); | |
2a750708 | 335 | return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset]; |
cbe950e9 | 336 | |
252b5132 RH |
337 | case BFD_RELOC_VTABLE_INHERIT: |
338 | TRACE ("BFD_RELOC_VTABLE_INHERIT"); | |
55fd94b0 | 339 | return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset]; |
252b5132 RH |
340 | |
341 | case BFD_RELOC_VTABLE_ENTRY: | |
342 | TRACE ("BFD_RELOC_VTABLE_ENTRY"); | |
55fd94b0 | 343 | return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset]; |
252b5132 RH |
344 | |
345 | default: | |
346 | break; | |
347 | } | |
348 | ||
349 | TRACE ("Unknown"); | |
350 | return 0; | |
351 | } | |
352 | ||
157090f7 AM |
353 | static reloc_howto_type * |
354 | elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
355 | const char *r_name) | |
356 | { | |
357 | unsigned int i; | |
358 | ||
359 | for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++) | |
360 | if (elf_howto_table[i].name != NULL | |
361 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
362 | return &elf_howto_table[i]; | |
363 | ||
364 | return NULL; | |
365 | } | |
366 | ||
142411ca L |
367 | static reloc_howto_type * |
368 | elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type) | |
252b5132 | 369 | { |
dc47f327 AM |
370 | unsigned int indx; |
371 | ||
372 | if ((indx = r_type) >= R_386_standard | |
373 | && ((indx = r_type - R_386_ext_offset) - R_386_standard | |
374 | >= R_386_ext - R_386_standard) | |
13ae64f3 | 375 | && ((indx = r_type - R_386_tls_offset) - R_386_ext |
cbe950e9 L |
376 | >= R_386_irelative - R_386_ext) |
377 | && ((indx = r_type - R_386_vt_offset) - R_386_irelative | |
378 | >= R_386_vt - R_386_irelative)) | |
252b5132 | 379 | { |
d003868e AM |
380 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), |
381 | abfd, (int) r_type); | |
55fd94b0 | 382 | indx = R_386_NONE; |
252b5132 | 383 | } |
142411ca L |
384 | BFD_ASSERT (elf_howto_table [indx].type == r_type); |
385 | return &elf_howto_table[indx]; | |
386 | } | |
387 | ||
388 | static void | |
389 | elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, | |
390 | arelent *cache_ptr, | |
391 | Elf_Internal_Rela *dst) | |
392 | { | |
393 | unsigned int r_type = ELF32_R_TYPE (dst->r_info); | |
394 | cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type); | |
252b5132 RH |
395 | } |
396 | ||
397 | /* Return whether a symbol name implies a local label. The UnixWare | |
398 | 2.1 cc generates temporary symbols that start with .X, so we | |
399 | recognize them here. FIXME: do other SVR4 compilers also use .X?. | |
400 | If so, we should move the .X recognition into | |
401 | _bfd_elf_is_local_label_name. */ | |
402 | ||
b34976b6 | 403 | static bfd_boolean |
55fd94b0 | 404 | elf_i386_is_local_label_name (bfd *abfd, const char *name) |
252b5132 RH |
405 | { |
406 | if (name[0] == '.' && name[1] == 'X') | |
b34976b6 | 407 | return TRUE; |
252b5132 RH |
408 | |
409 | return _bfd_elf_is_local_label_name (abfd, name); | |
410 | } | |
411 | \f | |
38701953 | 412 | /* Support for core dump NOTE sections. */ |
61adc1a4 | 413 | |
b34976b6 | 414 | static bfd_boolean |
55fd94b0 | 415 | elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
38701953 AM |
416 | { |
417 | int offset; | |
eea6121a | 418 | size_t size; |
38701953 | 419 | |
61adc1a4 | 420 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 421 | { |
61adc1a4 NC |
422 | int pr_version = bfd_get_32 (abfd, note->descdata); |
423 | ||
424 | if (pr_version != 1) | |
425 | return FALSE; | |
426 | ||
427 | /* pr_cursig */ | |
228e534f | 428 | elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20); |
61adc1a4 NC |
429 | |
430 | /* pr_pid */ | |
228e534f | 431 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
61adc1a4 NC |
432 | |
433 | /* pr_reg */ | |
434 | offset = 28; | |
eea6121a | 435 | size = bfd_get_32 (abfd, note->descdata + 8); |
61adc1a4 NC |
436 | } |
437 | else | |
438 | { | |
439 | switch (note->descsz) | |
440 | { | |
441 | default: | |
442 | return FALSE; | |
38701953 | 443 | |
61adc1a4 NC |
444 | case 144: /* Linux/i386 */ |
445 | /* pr_cursig */ | |
228e534f | 446 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
38701953 | 447 | |
61adc1a4 | 448 | /* pr_pid */ |
228e534f | 449 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); |
38701953 | 450 | |
61adc1a4 NC |
451 | /* pr_reg */ |
452 | offset = 72; | |
eea6121a | 453 | size = 68; |
38701953 | 454 | |
61adc1a4 NC |
455 | break; |
456 | } | |
38701953 AM |
457 | } |
458 | ||
459 | /* Make a ".reg/999" section. */ | |
460 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 461 | size, note->descpos + offset); |
38701953 AM |
462 | } |
463 | ||
b34976b6 | 464 | static bfd_boolean |
55fd94b0 | 465 | elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
38701953 | 466 | { |
61adc1a4 | 467 | if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) |
38701953 | 468 | { |
61adc1a4 NC |
469 | int pr_version = bfd_get_32 (abfd, note->descdata); |
470 | ||
471 | if (pr_version != 1) | |
b34976b6 | 472 | return FALSE; |
38701953 | 473 | |
228e534f | 474 | elf_tdata (abfd)->core->program |
61adc1a4 | 475 | = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17); |
228e534f | 476 | elf_tdata (abfd)->core->command |
61adc1a4 NC |
477 | = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81); |
478 | } | |
479 | else | |
480 | { | |
481 | switch (note->descsz) | |
482 | { | |
483 | default: | |
484 | return FALSE; | |
485 | ||
486 | case 124: /* Linux/i386 elf_prpsinfo. */ | |
228e534f | 487 | elf_tdata (abfd)->core->pid |
261b8d08 | 488 | = bfd_get_32 (abfd, note->descdata + 12); |
228e534f | 489 | elf_tdata (abfd)->core->program |
61adc1a4 | 490 | = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
228e534f | 491 | elf_tdata (abfd)->core->command |
61adc1a4 NC |
492 | = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
493 | } | |
38701953 AM |
494 | } |
495 | ||
496 | /* Note that for some reason, a spurious space is tacked | |
497 | onto the end of the args in some (at least one anyway) | |
498 | implementations, so strip it off if it exists. */ | |
38701953 | 499 | { |
228e534f | 500 | char *command = elf_tdata (abfd)->core->command; |
38701953 AM |
501 | int n = strlen (command); |
502 | ||
503 | if (0 < n && command[n - 1] == ' ') | |
504 | command[n - 1] = '\0'; | |
505 | } | |
506 | ||
b34976b6 | 507 | return TRUE; |
38701953 AM |
508 | } |
509 | \f | |
510 | /* Functions for the i386 ELF linker. | |
511 | ||
512 | In order to gain some understanding of code in this file without | |
513 | knowing all the intricate details of the linker, note the | |
514 | following: | |
515 | ||
516 | Functions named elf_i386_* are called by external routines, other | |
517 | functions are only called locally. elf_i386_* functions appear | |
518 | in this file more or less in the order in which they are called | |
519 | from external routines. eg. elf_i386_check_relocs is called | |
520 | early in the link process, elf_i386_finish_dynamic_sections is | |
521 | one of the last functions. */ | |
522 | ||
252b5132 RH |
523 | |
524 | /* The name of the dynamic interpreter. This is put in the .interp | |
525 | section. */ | |
526 | ||
527 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
528 | ||
a23b6845 AM |
529 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
530 | copying dynamic variables from a shared lib into an app's dynbss | |
531 | section, and instead use a dynamic relocation to point into the | |
532 | shared lib. */ | |
533 | #define ELIMINATE_COPY_RELOCS 1 | |
534 | ||
252b5132 RH |
535 | /* The size in bytes of an entry in the procedure linkage table. */ |
536 | ||
537 | #define PLT_ENTRY_SIZE 16 | |
538 | ||
539 | /* The first entry in an absolute procedure linkage table looks like | |
eac338cf PB |
540 | this. See the SVR4 ABI i386 supplement to see how this works. |
541 | Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */ | |
252b5132 | 542 | |
eac338cf | 543 | static const bfd_byte elf_i386_plt0_entry[12] = |
252b5132 RH |
544 | { |
545 | 0xff, 0x35, /* pushl contents of address */ | |
546 | 0, 0, 0, 0, /* replaced with address of .got + 4. */ | |
547 | 0xff, 0x25, /* jmp indirect */ | |
eac338cf | 548 | 0, 0, 0, 0 /* replaced with address of .got + 8. */ |
252b5132 RH |
549 | }; |
550 | ||
551 | /* Subsequent entries in an absolute procedure linkage table look like | |
552 | this. */ | |
553 | ||
554 | static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] = | |
555 | { | |
556 | 0xff, 0x25, /* jmp indirect */ | |
557 | 0, 0, 0, 0, /* replaced with address of this symbol in .got. */ | |
558 | 0x68, /* pushl immediate */ | |
559 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
560 | 0xe9, /* jmp relative */ | |
561 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
562 | }; | |
563 | ||
eac338cf PB |
564 | /* The first entry in a PIC procedure linkage table look like this. |
565 | Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */ | |
252b5132 | 566 | |
eac338cf | 567 | static const bfd_byte elf_i386_pic_plt0_entry[12] = |
252b5132 RH |
568 | { |
569 | 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */ | |
eac338cf | 570 | 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */ |
252b5132 RH |
571 | }; |
572 | ||
573 | /* Subsequent entries in a PIC procedure linkage table look like this. */ | |
574 | ||
575 | static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] = | |
576 | { | |
577 | 0xff, 0xa3, /* jmp *offset(%ebx) */ | |
578 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
579 | 0x68, /* pushl immediate */ | |
580 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
581 | 0xe9, /* jmp relative */ | |
582 | 0, 0, 0, 0 /* replaced with offset to start of .plt. */ | |
583 | }; | |
584 | ||
e41b3a13 JJ |
585 | /* .eh_frame covering the .plt section. */ |
586 | ||
587 | static const bfd_byte elf_i386_eh_frame_plt[] = | |
588 | { | |
589 | #define PLT_CIE_LENGTH 20 | |
590 | #define PLT_FDE_LENGTH 36 | |
591 | #define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8 | |
592 | #define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12 | |
593 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
594 | 0, 0, 0, 0, /* CIE ID */ | |
595 | 1, /* CIE version */ | |
596 | 'z', 'R', 0, /* Augmentation string */ | |
597 | 1, /* Code alignment factor */ | |
598 | 0x7c, /* Data alignment factor */ | |
599 | 8, /* Return address column */ | |
600 | 1, /* Augmentation size */ | |
601 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
602 | DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */ | |
603 | DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */ | |
604 | DW_CFA_nop, DW_CFA_nop, | |
605 | ||
606 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
607 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
608 | 0, 0, 0, 0, /* R_386_PC32 .plt goes here */ | |
609 | 0, 0, 0, 0, /* .plt size goes here */ | |
610 | 0, /* Augmentation size */ | |
611 | DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */ | |
612 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
613 | DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */ | |
614 | DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */ | |
615 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
616 | 11, /* Block length */ | |
617 | DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */ | |
618 | DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */ | |
619 | DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge, | |
28ede8be | 620 | DW_OP_lit2, DW_OP_shl, DW_OP_plus, |
e41b3a13 JJ |
621 | DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop |
622 | }; | |
623 | ||
25e762b9 RM |
624 | struct elf_i386_plt_layout |
625 | { | |
626 | /* The first entry in an absolute procedure linkage table looks like this. */ | |
627 | const bfd_byte *plt0_entry; | |
628 | unsigned int plt0_entry_size; | |
629 | ||
630 | /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */ | |
631 | unsigned int plt0_got1_offset; | |
632 | unsigned int plt0_got2_offset; | |
633 | ||
634 | /* Later entries in an absolute procedure linkage table look like this. */ | |
635 | const bfd_byte *plt_entry; | |
636 | unsigned int plt_entry_size; | |
637 | ||
638 | /* Offsets into plt_entry that are to be replaced with... */ | |
639 | unsigned int plt_got_offset; /* ... address of this symbol in .got. */ | |
640 | unsigned int plt_reloc_offset; /* ... offset into relocation table. */ | |
641 | unsigned int plt_plt_offset; /* ... offset to start of .plt. */ | |
642 | ||
643 | /* Offset into plt_entry where the initial value of the GOT entry points. */ | |
644 | unsigned int plt_lazy_offset; | |
645 | ||
646 | /* The first entry in a PIC procedure linkage table looks like this. */ | |
647 | const bfd_byte *pic_plt0_entry; | |
648 | ||
649 | /* Subsequent entries in a PIC procedure linkage table look like this. */ | |
650 | const bfd_byte *pic_plt_entry; | |
651 | ||
652 | /* .eh_frame covering the .plt section. */ | |
653 | const bfd_byte *eh_frame_plt; | |
654 | unsigned int eh_frame_plt_size; | |
655 | }; | |
656 | ||
657 | #define GET_PLT_ENTRY_SIZE(abfd) \ | |
658 | get_elf_i386_backend_data (abfd)->plt->plt_entry_size | |
659 | ||
660 | /* These are the standard parameters. */ | |
661 | static const struct elf_i386_plt_layout elf_i386_plt = | |
662 | { | |
663 | elf_i386_plt0_entry, /* plt0_entry */ | |
664 | sizeof (elf_i386_plt0_entry), /* plt0_entry_size */ | |
665 | 2, /* plt0_got1_offset */ | |
666 | 8, /* plt0_got2_offset */ | |
667 | elf_i386_plt_entry, /* plt_entry */ | |
668 | PLT_ENTRY_SIZE, /* plt_entry_size */ | |
669 | 2, /* plt_got_offset */ | |
670 | 7, /* plt_reloc_offset */ | |
671 | 12, /* plt_plt_offset */ | |
672 | 6, /* plt_lazy_offset */ | |
673 | elf_i386_pic_plt0_entry, /* pic_plt0_entry */ | |
674 | elf_i386_pic_plt_entry, /* pic_plt_entry */ | |
675 | elf_i386_eh_frame_plt, /* eh_frame_plt */ | |
676 | sizeof (elf_i386_eh_frame_plt), /* eh_frame_plt_size */ | |
677 | }; | |
678 | \f | |
679 | ||
eac338cf PB |
680 | /* On VxWorks, the .rel.plt.unloaded section has absolute relocations |
681 | for the PLTResolve stub and then for each PLT entry. */ | |
682 | #define PLTRESOLVE_RELOCS_SHLIB 0 | |
683 | #define PLTRESOLVE_RELOCS 2 | |
684 | #define PLT_NON_JUMP_SLOT_RELOCS 2 | |
685 | ||
23209a78 RM |
686 | /* Architecture-specific backend data for i386. */ |
687 | ||
688 | struct elf_i386_backend_data | |
689 | { | |
25e762b9 RM |
690 | /* Parameters describing PLT generation. */ |
691 | const struct elf_i386_plt_layout *plt; | |
692 | ||
23209a78 RM |
693 | /* Value used to fill the unused bytes of the first PLT entry. */ |
694 | bfd_byte plt0_pad_byte; | |
695 | ||
696 | /* True if the target system is VxWorks. */ | |
697 | int is_vxworks; | |
698 | }; | |
699 | ||
700 | #define get_elf_i386_backend_data(abfd) \ | |
701 | ((const struct elf_i386_backend_data *) \ | |
702 | get_elf_backend_data (abfd)->arch_data) | |
703 | ||
704 | /* These are the standard parameters. */ | |
705 | static const struct elf_i386_backend_data elf_i386_arch_bed = | |
706 | { | |
25e762b9 | 707 | &elf_i386_plt, /* plt */ |
23209a78 RM |
708 | 0, /* plt0_pad_byte */ |
709 | 0, /* is_vxworks */ | |
710 | }; | |
711 | ||
712 | #define elf_backend_arch_data &elf_i386_arch_bed | |
713 | ||
252b5132 RH |
714 | /* i386 ELF linker hash entry. */ |
715 | ||
716 | struct elf_i386_link_hash_entry | |
717 | { | |
ebe50bae | 718 | struct elf_link_hash_entry elf; |
252b5132 | 719 | |
0c715baa | 720 | /* Track dynamic relocs copied for this symbol. */ |
e03a8ed8 | 721 | struct elf_dyn_relocs *dyn_relocs; |
13ae64f3 | 722 | |
37e55690 JJ |
723 | #define GOT_UNKNOWN 0 |
724 | #define GOT_NORMAL 1 | |
725 | #define GOT_TLS_GD 2 | |
726 | #define GOT_TLS_IE 4 | |
727 | #define GOT_TLS_IE_POS 5 | |
728 | #define GOT_TLS_IE_NEG 6 | |
729 | #define GOT_TLS_IE_BOTH 7 | |
67a4f2b7 AO |
730 | #define GOT_TLS_GDESC 8 |
731 | #define GOT_TLS_GD_BOTH_P(type) \ | |
732 | ((type) == (GOT_TLS_GD | GOT_TLS_GDESC)) | |
733 | #define GOT_TLS_GD_P(type) \ | |
734 | ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type)) | |
735 | #define GOT_TLS_GDESC_P(type) \ | |
736 | ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type)) | |
737 | #define GOT_TLS_GD_ANY_P(type) \ | |
738 | (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type)) | |
37e55690 | 739 | unsigned char tls_type; |
67a4f2b7 AO |
740 | |
741 | /* Offset of the GOTPLT entry reserved for the TLS descriptor, | |
742 | starting at the end of the jump table. */ | |
743 | bfd_vma tlsdesc_got; | |
13ae64f3 JJ |
744 | }; |
745 | ||
746 | #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent)) | |
747 | ||
748 | struct elf_i386_obj_tdata | |
749 | { | |
750 | struct elf_obj_tdata root; | |
751 | ||
752 | /* tls_type for each local got entry. */ | |
753 | char *local_got_tls_type; | |
67a4f2b7 AO |
754 | |
755 | /* GOTPLT entries for TLS descriptors. */ | |
756 | bfd_vma *local_tlsdesc_gotent; | |
252b5132 RH |
757 | }; |
758 | ||
13ae64f3 JJ |
759 | #define elf_i386_tdata(abfd) \ |
760 | ((struct elf_i386_obj_tdata *) (abfd)->tdata.any) | |
761 | ||
762 | #define elf_i386_local_got_tls_type(abfd) \ | |
763 | (elf_i386_tdata (abfd)->local_got_tls_type) | |
764 | ||
67a4f2b7 AO |
765 | #define elf_i386_local_tlsdesc_gotent(abfd) \ |
766 | (elf_i386_tdata (abfd)->local_tlsdesc_gotent) | |
767 | ||
0ffa91dd NC |
768 | #define is_i386_elf(bfd) \ |
769 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
770 | && elf_tdata (bfd) != NULL \ | |
4dfe6ac6 | 771 | && elf_object_id (bfd) == I386_ELF_DATA) |
0ffa91dd | 772 | |
b34976b6 | 773 | static bfd_boolean |
55fd94b0 | 774 | elf_i386_mkobject (bfd *abfd) |
13ae64f3 | 775 | { |
0ffa91dd | 776 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata), |
4dfe6ac6 | 777 | I386_ELF_DATA); |
13ae64f3 | 778 | } |
cedb70c5 | 779 | |
252b5132 RH |
780 | /* i386 ELF linker hash table. */ |
781 | ||
782 | struct elf_i386_link_hash_table | |
783 | { | |
ebe50bae | 784 | struct elf_link_hash_table elf; |
252b5132 | 785 | |
6725bdbf | 786 | /* Short-cuts to get to dynamic linker sections. */ |
6725bdbf AM |
787 | asection *sdynbss; |
788 | asection *srelbss; | |
e41b3a13 | 789 | asection *plt_eh_frame; |
9635fe29 | 790 | |
4dfe6ac6 NC |
791 | union |
792 | { | |
13ae64f3 JJ |
793 | bfd_signed_vma refcount; |
794 | bfd_vma offset; | |
795 | } tls_ldm_got; | |
796 | ||
67a4f2b7 AO |
797 | /* The amount of space used by the reserved portion of the sgotplt |
798 | section, plus whatever space is used by the jump slots. */ | |
799 | bfd_vma sgotplt_jump_table_size; | |
800 | ||
87d72d41 AM |
801 | /* Small local sym cache. */ |
802 | struct sym_cache sym_cache; | |
9f03412a AO |
803 | |
804 | /* _TLS_MODULE_BASE_ symbol. */ | |
805 | struct bfd_link_hash_entry *tls_module_base; | |
c25bc9fc L |
806 | |
807 | /* Used by local STT_GNU_IFUNC symbols. */ | |
808 | htab_t loc_hash_table; | |
4dfe6ac6 NC |
809 | void * loc_hash_memory; |
810 | ||
811 | /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */ | |
812 | asection *srelplt2; | |
813 | ||
4dfe6ac6 NC |
814 | /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */ |
815 | bfd_vma next_tls_desc_index; | |
e1f98742 L |
816 | |
817 | /* The index of the next unused R_386_JUMP_SLOT slot in .rel.plt. */ | |
818 | bfd_vma next_jump_slot_index; | |
819 | ||
820 | /* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */ | |
821 | bfd_vma next_irelative_index; | |
6725bdbf | 822 | }; |
252b5132 RH |
823 | |
824 | /* Get the i386 ELF linker hash table from a link_info structure. */ | |
825 | ||
826 | #define elf_i386_hash_table(p) \ | |
4dfe6ac6 NC |
827 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
828 | == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL) | |
252b5132 | 829 | |
67a4f2b7 | 830 | #define elf_i386_compute_jump_table_size(htab) \ |
5ae0bfb6 | 831 | ((htab)->next_tls_desc_index * 4) |
67a4f2b7 | 832 | |
252b5132 RH |
833 | /* Create an entry in an i386 ELF linker hash table. */ |
834 | ||
835 | static struct bfd_hash_entry * | |
eb4ff4d6 L |
836 | elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry, |
837 | struct bfd_hash_table *table, | |
838 | const char *string) | |
252b5132 | 839 | { |
252b5132 RH |
840 | /* Allocate the structure if it has not already been allocated by a |
841 | subclass. */ | |
ebe50bae AM |
842 | if (entry == NULL) |
843 | { | |
a50b1753 NC |
844 | entry = (struct bfd_hash_entry *) |
845 | bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry)); | |
ebe50bae AM |
846 | if (entry == NULL) |
847 | return entry; | |
848 | } | |
252b5132 RH |
849 | |
850 | /* Call the allocation method of the superclass. */ | |
ebe50bae AM |
851 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
852 | if (entry != NULL) | |
252b5132 | 853 | { |
ebe50bae AM |
854 | struct elf_i386_link_hash_entry *eh; |
855 | ||
856 | eh = (struct elf_i386_link_hash_entry *) entry; | |
857 | eh->dyn_relocs = NULL; | |
13ae64f3 | 858 | eh->tls_type = GOT_UNKNOWN; |
67a4f2b7 | 859 | eh->tlsdesc_got = (bfd_vma) -1; |
252b5132 RH |
860 | } |
861 | ||
ebe50bae | 862 | return entry; |
252b5132 RH |
863 | } |
864 | ||
c25bc9fc L |
865 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry |
866 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
867 | as global symbol. We reuse indx and dynstr_index for local symbol | |
868 | hash since they aren't used by global symbols in this backend. */ | |
869 | ||
870 | static hashval_t | |
871 | elf_i386_local_htab_hash (const void *ptr) | |
872 | { | |
873 | struct elf_link_hash_entry *h | |
874 | = (struct elf_link_hash_entry *) ptr; | |
d2149d72 | 875 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); |
c25bc9fc L |
876 | } |
877 | ||
878 | /* Compare local hash entries. */ | |
879 | ||
880 | static int | |
881 | elf_i386_local_htab_eq (const void *ptr1, const void *ptr2) | |
882 | { | |
883 | struct elf_link_hash_entry *h1 | |
884 | = (struct elf_link_hash_entry *) ptr1; | |
885 | struct elf_link_hash_entry *h2 | |
886 | = (struct elf_link_hash_entry *) ptr2; | |
887 | ||
888 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
889 | } | |
890 | ||
891 | /* Find and/or create a hash entry for local symbol. */ | |
892 | ||
893 | static struct elf_link_hash_entry * | |
894 | elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab, | |
895 | bfd *abfd, const Elf_Internal_Rela *rel, | |
896 | bfd_boolean create) | |
897 | { | |
898 | struct elf_i386_link_hash_entry e, *ret; | |
899 | asection *sec = abfd->sections; | |
d2149d72 L |
900 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, |
901 | ELF32_R_SYM (rel->r_info)); | |
c25bc9fc L |
902 | void **slot; |
903 | ||
904 | e.elf.indx = sec->id; | |
905 | e.elf.dynstr_index = ELF32_R_SYM (rel->r_info); | |
906 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
907 | create ? INSERT : NO_INSERT); | |
908 | ||
909 | if (!slot) | |
910 | return NULL; | |
911 | ||
912 | if (*slot) | |
913 | { | |
914 | ret = (struct elf_i386_link_hash_entry *) *slot; | |
915 | return &ret->elf; | |
916 | } | |
917 | ||
918 | ret = (struct elf_i386_link_hash_entry *) | |
919 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
920 | sizeof (struct elf_i386_link_hash_entry)); | |
921 | if (ret) | |
922 | { | |
923 | memset (ret, 0, sizeof (*ret)); | |
924 | ret->elf.indx = sec->id; | |
925 | ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info); | |
926 | ret->elf.dynindx = -1; | |
c25bc9fc L |
927 | *slot = ret; |
928 | } | |
929 | return &ret->elf; | |
930 | } | |
931 | ||
252b5132 RH |
932 | /* Create an i386 ELF linker hash table. */ |
933 | ||
934 | static struct bfd_link_hash_table * | |
55fd94b0 | 935 | elf_i386_link_hash_table_create (bfd *abfd) |
252b5132 RH |
936 | { |
937 | struct elf_i386_link_hash_table *ret; | |
dc810e39 | 938 | bfd_size_type amt = sizeof (struct elf_i386_link_hash_table); |
252b5132 | 939 | |
7bf52ea2 | 940 | ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt); |
ebe50bae | 941 | if (ret == NULL) |
252b5132 RH |
942 | return NULL; |
943 | ||
eb4ff4d6 L |
944 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, |
945 | elf_i386_link_hash_newfunc, | |
4dfe6ac6 NC |
946 | sizeof (struct elf_i386_link_hash_entry), |
947 | I386_ELF_DATA)) | |
252b5132 | 948 | { |
e2d34d7d | 949 | free (ret); |
252b5132 RH |
950 | return NULL; |
951 | } | |
952 | ||
c25bc9fc L |
953 | ret->loc_hash_table = htab_try_create (1024, |
954 | elf_i386_local_htab_hash, | |
955 | elf_i386_local_htab_eq, | |
956 | NULL); | |
957 | ret->loc_hash_memory = objalloc_create (); | |
958 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
959 | { | |
960 | free (ret); | |
961 | return NULL; | |
962 | } | |
963 | ||
ebe50bae | 964 | return &ret->elf.root; |
252b5132 RH |
965 | } |
966 | ||
c25bc9fc L |
967 | /* Destroy an i386 ELF linker hash table. */ |
968 | ||
969 | static void | |
970 | elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash) | |
971 | { | |
972 | struct elf_i386_link_hash_table *htab | |
973 | = (struct elf_i386_link_hash_table *) hash; | |
974 | ||
975 | if (htab->loc_hash_table) | |
976 | htab_delete (htab->loc_hash_table); | |
977 | if (htab->loc_hash_memory) | |
978 | objalloc_free ((struct objalloc *) htab->loc_hash_memory); | |
9f7c3e5e | 979 | _bfd_elf_link_hash_table_free (hash); |
c25bc9fc L |
980 | } |
981 | ||
6725bdbf AM |
982 | /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and |
983 | .rel.bss sections in DYNOBJ, and set up shortcuts to them in our | |
984 | hash table. */ | |
985 | ||
b34976b6 | 986 | static bfd_boolean |
55fd94b0 | 987 | elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
6725bdbf AM |
988 | { |
989 | struct elf_i386_link_hash_table *htab; | |
990 | ||
6725bdbf | 991 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 992 | return FALSE; |
6725bdbf | 993 | |
6de2ae4a | 994 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
995 | if (htab == NULL) |
996 | return FALSE; | |
997 | ||
3d4d4302 | 998 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
6725bdbf | 999 | if (!info->shared) |
3d4d4302 | 1000 | htab->srelbss = bfd_get_linker_section (dynobj, ".rel.bss"); |
6725bdbf | 1001 | |
6de2ae4a | 1002 | if (!htab->sdynbss |
6725bdbf AM |
1003 | || (!info->shared && !htab->srelbss)) |
1004 | abort (); | |
1005 | ||
23209a78 | 1006 | if (get_elf_i386_backend_data (dynobj)->is_vxworks |
6de2ae4a L |
1007 | && !elf_vxworks_create_dynamic_sections (dynobj, info, |
1008 | &htab->srelplt2)) | |
711de32c | 1009 | return FALSE; |
eac338cf | 1010 | |
e41b3a13 | 1011 | if (!info->no_ld_generated_unwind_info |
2fe0fd06 | 1012 | && htab->plt_eh_frame == NULL |
e4de50d4 | 1013 | && htab->elf.splt != NULL) |
e41b3a13 | 1014 | { |
bbf96e4e L |
1015 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
1016 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
1017 | | SEC_LINKER_CREATED); | |
e41b3a13 | 1018 | htab->plt_eh_frame |
bbf96e4e | 1019 | = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags); |
e41b3a13 JJ |
1020 | if (htab->plt_eh_frame == NULL |
1021 | || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2)) | |
1022 | return FALSE; | |
e41b3a13 JJ |
1023 | } |
1024 | ||
b34976b6 | 1025 | return TRUE; |
6725bdbf AM |
1026 | } |
1027 | ||
ebe50bae AM |
1028 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
1029 | ||
51b64d56 | 1030 | static void |
fcfa13d2 | 1031 | elf_i386_copy_indirect_symbol (struct bfd_link_info *info, |
55fd94b0 AM |
1032 | struct elf_link_hash_entry *dir, |
1033 | struct elf_link_hash_entry *ind) | |
ebe50bae AM |
1034 | { |
1035 | struct elf_i386_link_hash_entry *edir, *eind; | |
1036 | ||
1037 | edir = (struct elf_i386_link_hash_entry *) dir; | |
1038 | eind = (struct elf_i386_link_hash_entry *) ind; | |
1039 | ||
bbd7ec4a | 1040 | if (eind->dyn_relocs != NULL) |
ebe50bae | 1041 | { |
bbd7ec4a AM |
1042 | if (edir->dyn_relocs != NULL) |
1043 | { | |
e03a8ed8 L |
1044 | struct elf_dyn_relocs **pp; |
1045 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 1046 | |
fcfa13d2 | 1047 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
1048 | list. Merge any entries against the same section. */ |
1049 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
1050 | { | |
e03a8ed8 | 1051 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
1052 | |
1053 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
1054 | if (q->sec == p->sec) | |
1055 | { | |
1056 | q->pc_count += p->pc_count; | |
1057 | q->count += p->count; | |
1058 | *pp = p->next; | |
1059 | break; | |
1060 | } | |
1061 | if (q == NULL) | |
1062 | pp = &p->next; | |
1063 | } | |
1064 | *pp = edir->dyn_relocs; | |
1065 | } | |
1066 | ||
ebe50bae AM |
1067 | edir->dyn_relocs = eind->dyn_relocs; |
1068 | eind->dyn_relocs = NULL; | |
1069 | } | |
ebe50bae | 1070 | |
cd67d266 JJ |
1071 | if (ind->root.type == bfd_link_hash_indirect |
1072 | && dir->got.refcount <= 0) | |
1073 | { | |
1074 | edir->tls_type = eind->tls_type; | |
1075 | eind->tls_type = GOT_UNKNOWN; | |
1076 | } | |
81848ca0 AM |
1077 | |
1078 | if (ELIMINATE_COPY_RELOCS | |
1079 | && ind->root.type != bfd_link_hash_indirect | |
f5385ebf AM |
1080 | && dir->dynamic_adjusted) |
1081 | { | |
1082 | /* If called to transfer flags for a weakdef during processing | |
1083 | of elf_adjust_dynamic_symbol, don't copy non_got_ref. | |
1084 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
1085 | dir->ref_dynamic |= ind->ref_dynamic; | |
1086 | dir->ref_regular |= ind->ref_regular; | |
1087 | dir->ref_regular_nonweak |= ind->ref_regular_nonweak; | |
1088 | dir->needs_plt |= ind->needs_plt; | |
1089 | dir->pointer_equality_needed |= ind->pointer_equality_needed; | |
1090 | } | |
81848ca0 | 1091 | else |
fcfa13d2 | 1092 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
ebe50bae AM |
1093 | } |
1094 | ||
142411ca L |
1095 | /* Return TRUE if the TLS access code sequence support transition |
1096 | from R_TYPE. */ | |
1097 | ||
1098 | static bfd_boolean | |
1099 | elf_i386_check_tls_transition (bfd *abfd, asection *sec, | |
1100 | bfd_byte *contents, | |
1101 | Elf_Internal_Shdr *symtab_hdr, | |
1102 | struct elf_link_hash_entry **sym_hashes, | |
1103 | unsigned int r_type, | |
1104 | const Elf_Internal_Rela *rel, | |
1105 | const Elf_Internal_Rela *relend) | |
13ae64f3 | 1106 | { |
142411ca L |
1107 | unsigned int val, type; |
1108 | unsigned long r_symndx; | |
1109 | struct elf_link_hash_entry *h; | |
1110 | bfd_vma offset; | |
1111 | ||
1112 | /* Get the section contents. */ | |
1113 | if (contents == NULL) | |
1114 | { | |
1115 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
1116 | contents = elf_section_data (sec)->this_hdr.contents; | |
1117 | else | |
1118 | { | |
1119 | /* FIXME: How to better handle error condition? */ | |
1120 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
1121 | return FALSE; | |
13ae64f3 | 1122 | |
142411ca L |
1123 | /* Cache the section contents for elf_link_input_bfd. */ |
1124 | elf_section_data (sec)->this_hdr.contents = contents; | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | offset = rel->r_offset; | |
13ae64f3 | 1129 | switch (r_type) |
142411ca L |
1130 | { |
1131 | case R_386_TLS_GD: | |
1132 | case R_386_TLS_LDM: | |
1133 | if (offset < 2 || (rel + 1) >= relend) | |
1134 | return FALSE; | |
1135 | ||
1136 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1137 | if (r_type == R_386_TLS_GD) | |
1138 | { | |
09e8c3bf | 1139 | /* Check transition from GD access model. Only |
142411ca L |
1140 | leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr |
1141 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop | |
1142 | can transit to different access model. */ | |
1143 | if ((offset + 10) > sec->size || | |
1144 | (type != 0x8d && type != 0x04)) | |
1145 | return FALSE; | |
1146 | ||
1147 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1148 | if (type == 0x04) | |
1149 | { | |
1150 | /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */ | |
1151 | if (offset < 3) | |
1152 | return FALSE; | |
1153 | ||
1154 | if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d) | |
1155 | return FALSE; | |
1156 | ||
1157 | if ((val & 0xc7) != 0x05 || val == (4 << 3)) | |
1158 | return FALSE; | |
1159 | } | |
1160 | else | |
1161 | { | |
1162 | /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop */ | |
1163 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
1164 | return FALSE; | |
1165 | ||
1166 | if (bfd_get_8 (abfd, contents + offset + 9) != 0x90) | |
1167 | return FALSE; | |
1168 | } | |
1169 | } | |
1170 | else | |
1171 | { | |
1172 | /* Check transition from LD access model. Only | |
1173 | leal foo@tlsgd(%reg), %eax; call ___tls_get_addr | |
1174 | can transit to different access model. */ | |
1175 | if (type != 0x8d || (offset + 9) > sec->size) | |
1176 | return FALSE; | |
1177 | ||
1178 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1179 | if ((val & 0xf8) != 0x80 || (val & 7) == 4) | |
1180 | return FALSE; | |
1181 | } | |
1182 | ||
1183 | if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8) | |
1184 | return FALSE; | |
1185 | ||
1186 | r_symndx = ELF32_R_SYM (rel[1].r_info); | |
1187 | if (r_symndx < symtab_hdr->sh_info) | |
1188 | return FALSE; | |
1189 | ||
1190 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
c4fb387b L |
1191 | /* Use strncmp to check ___tls_get_addr since ___tls_get_addr |
1192 | may be versioned. */ | |
142411ca L |
1193 | return (h != NULL |
1194 | && h->root.root.string != NULL | |
1195 | && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32 | |
1196 | || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32) | |
c4fb387b L |
1197 | && (strncmp (h->root.root.string, "___tls_get_addr", |
1198 | 15) == 0)); | |
142411ca L |
1199 | |
1200 | case R_386_TLS_IE: | |
1201 | /* Check transition from IE access model: | |
1202 | movl foo@indntpoff(%rip), %eax | |
1203 | movl foo@indntpoff(%rip), %reg | |
1204 | addl foo@indntpoff(%rip), %reg | |
1205 | */ | |
1206 | ||
1207 | if (offset < 1 || (offset + 4) > sec->size) | |
1208 | return FALSE; | |
1209 | ||
1210 | /* Check "movl foo@tpoff(%rip), %eax" first. */ | |
1211 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1212 | if (val == 0xa1) | |
1213 | return TRUE; | |
1214 | ||
1215 | if (offset < 2) | |
1216 | return FALSE; | |
1217 | ||
1218 | /* Check movl|addl foo@tpoff(%rip), %reg. */ | |
1219 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1220 | return ((type == 0x8b || type == 0x03) | |
1221 | && (val & 0xc7) == 0x05); | |
1222 | ||
1223 | case R_386_TLS_GOTIE: | |
1224 | case R_386_TLS_IE_32: | |
1225 | /* Check transition from {IE_32,GOTIE} access model: | |
1226 | subl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1227 | movl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1228 | addl foo@{tpoff,gontoff}(%reg1), %reg2 | |
1229 | */ | |
1230 | ||
1231 | if (offset < 2 || (offset + 4) > sec->size) | |
1232 | return FALSE; | |
1233 | ||
1234 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1235 | if ((val & 0xc0) != 0x80 || (val & 7) == 4) | |
1236 | return FALSE; | |
1237 | ||
1238 | type = bfd_get_8 (abfd, contents + offset - 2); | |
1239 | return type == 0x8b || type == 0x2b || type == 0x03; | |
1240 | ||
1241 | case R_386_TLS_GOTDESC: | |
1242 | /* Check transition from GDesc access model: | |
1243 | leal x@tlsdesc(%ebx), %eax | |
1244 | ||
1245 | Make sure it's a leal adding ebx to a 32-bit offset | |
1246 | into any register, although it's probably almost always | |
1247 | going to be eax. */ | |
1248 | ||
1249 | if (offset < 2 || (offset + 4) > sec->size) | |
1250 | return FALSE; | |
1251 | ||
1252 | if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d) | |
1253 | return FALSE; | |
1254 | ||
1255 | val = bfd_get_8 (abfd, contents + offset - 1); | |
1256 | return (val & 0xc7) == 0x83; | |
1257 | ||
1258 | case R_386_TLS_DESC_CALL: | |
1259 | /* Check transition from GDesc access model: | |
1260 | call *x@tlsdesc(%rax) | |
1261 | */ | |
1262 | if (offset + 2 <= sec->size) | |
1263 | { | |
1264 | /* Make sure that it's a call *x@tlsdesc(%rax). */ | |
fa289a5f AM |
1265 | static const unsigned char call[] = { 0xff, 0x10 }; |
1266 | return memcmp (contents + offset, call, 2) == 0; | |
142411ca L |
1267 | } |
1268 | ||
1269 | return FALSE; | |
1270 | ||
1271 | default: | |
1272 | abort (); | |
1273 | } | |
1274 | } | |
1275 | ||
1276 | /* Return TRUE if the TLS access transition is OK or no transition | |
1277 | will be performed. Update R_TYPE if there is a transition. */ | |
1278 | ||
1279 | static bfd_boolean | |
1280 | elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd, | |
1281 | asection *sec, bfd_byte *contents, | |
1282 | Elf_Internal_Shdr *symtab_hdr, | |
1283 | struct elf_link_hash_entry **sym_hashes, | |
1284 | unsigned int *r_type, int tls_type, | |
1285 | const Elf_Internal_Rela *rel, | |
1286 | const Elf_Internal_Rela *relend, | |
4c544807 L |
1287 | struct elf_link_hash_entry *h, |
1288 | unsigned long r_symndx) | |
142411ca L |
1289 | { |
1290 | unsigned int from_type = *r_type; | |
1291 | unsigned int to_type = from_type; | |
1292 | bfd_boolean check = TRUE; | |
1293 | ||
bb1cb422 L |
1294 | /* Skip TLS transition for functions. */ |
1295 | if (h != NULL | |
1296 | && (h->type == STT_FUNC | |
1297 | || h->type == STT_GNU_IFUNC)) | |
1298 | return TRUE; | |
1299 | ||
142411ca | 1300 | switch (from_type) |
13ae64f3 JJ |
1301 | { |
1302 | case R_386_TLS_GD: | |
67a4f2b7 AO |
1303 | case R_386_TLS_GOTDESC: |
1304 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 1305 | case R_386_TLS_IE_32: |
37e55690 JJ |
1306 | case R_386_TLS_IE: |
1307 | case R_386_TLS_GOTIE: | |
1d85728f | 1308 | if (info->executable) |
142411ca L |
1309 | { |
1310 | if (h == NULL) | |
1311 | to_type = R_386_TLS_LE_32; | |
1312 | else if (from_type != R_386_TLS_IE | |
1313 | && from_type != R_386_TLS_GOTIE) | |
1314 | to_type = R_386_TLS_IE_32; | |
1315 | } | |
1316 | ||
1317 | /* When we are called from elf_i386_relocate_section, CONTENTS | |
1318 | isn't NULL and there may be additional transitions based on | |
1319 | TLS_TYPE. */ | |
1320 | if (contents != NULL) | |
1321 | { | |
1322 | unsigned int new_to_type = to_type; | |
1323 | ||
1d85728f | 1324 | if (info->executable |
142411ca L |
1325 | && h != NULL |
1326 | && h->dynindx == -1 | |
1327 | && (tls_type & GOT_TLS_IE)) | |
1328 | new_to_type = R_386_TLS_LE_32; | |
1329 | ||
1330 | if (to_type == R_386_TLS_GD | |
1331 | || to_type == R_386_TLS_GOTDESC | |
1332 | || to_type == R_386_TLS_DESC_CALL) | |
1333 | { | |
1334 | if (tls_type == GOT_TLS_IE_POS) | |
1335 | new_to_type = R_386_TLS_GOTIE; | |
1336 | else if (tls_type & GOT_TLS_IE) | |
1337 | new_to_type = R_386_TLS_IE_32; | |
1338 | } | |
1339 | ||
1340 | /* We checked the transition before when we were called from | |
1341 | elf_i386_check_relocs. We only want to check the new | |
1342 | transition which hasn't been checked before. */ | |
1343 | check = new_to_type != to_type && from_type == to_type; | |
1344 | to_type = new_to_type; | |
1345 | } | |
1346 | ||
1347 | break; | |
1348 | ||
13ae64f3 | 1349 | case R_386_TLS_LDM: |
1d85728f | 1350 | if (info->executable) |
142411ca L |
1351 | to_type = R_386_TLS_LE_32; |
1352 | break; | |
1353 | ||
1354 | default: | |
1355 | return TRUE; | |
1356 | } | |
1357 | ||
1358 | /* Return TRUE if there is no transition. */ | |
1359 | if (from_type == to_type) | |
1360 | return TRUE; | |
1361 | ||
1362 | /* Check if the transition can be performed. */ | |
1363 | if (check | |
1364 | && ! elf_i386_check_tls_transition (abfd, sec, contents, | |
1365 | symtab_hdr, sym_hashes, | |
1366 | from_type, rel, relend)) | |
1367 | { | |
2f629d23 | 1368 | reloc_howto_type *from, *to; |
4c544807 | 1369 | const char *name; |
142411ca L |
1370 | |
1371 | from = elf_i386_rtype_to_howto (abfd, from_type); | |
1372 | to = elf_i386_rtype_to_howto (abfd, to_type); | |
1373 | ||
4c544807 L |
1374 | if (h) |
1375 | name = h->root.root.string; | |
1376 | else | |
1377 | { | |
4c544807 | 1378 | struct elf_i386_link_hash_table *htab; |
4dfe6ac6 | 1379 | |
4c544807 | 1380 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
1381 | if (htab == NULL) |
1382 | name = "*unknown*"; | |
1383 | else | |
1384 | { | |
1385 | Elf_Internal_Sym *isym; | |
1386 | ||
1387 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1388 | abfd, r_symndx); | |
1389 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); | |
1390 | } | |
4c544807 L |
1391 | } |
1392 | ||
142411ca L |
1393 | (*_bfd_error_handler) |
1394 | (_("%B: TLS transition from %s to %s against `%s' at 0x%lx " | |
1395 | "in section `%A' failed"), | |
4c544807 | 1396 | abfd, sec, from->name, to->name, name, |
142411ca L |
1397 | (unsigned long) rel->r_offset); |
1398 | bfd_set_error (bfd_error_bad_value); | |
1399 | return FALSE; | |
13ae64f3 JJ |
1400 | } |
1401 | ||
142411ca L |
1402 | *r_type = to_type; |
1403 | return TRUE; | |
13ae64f3 JJ |
1404 | } |
1405 | ||
252b5132 | 1406 | /* Look through the relocs for a section during the first phase, and |
0ac8d2ca AM |
1407 | calculate needed space in the global offset table, procedure linkage |
1408 | table, and dynamic reloc sections. */ | |
252b5132 | 1409 | |
b34976b6 | 1410 | static bfd_boolean |
55fd94b0 AM |
1411 | elf_i386_check_relocs (bfd *abfd, |
1412 | struct bfd_link_info *info, | |
1413 | asection *sec, | |
1414 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1415 | { |
6725bdbf | 1416 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
1417 | Elf_Internal_Shdr *symtab_hdr; |
1418 | struct elf_link_hash_entry **sym_hashes; | |
252b5132 RH |
1419 | const Elf_Internal_Rela *rel; |
1420 | const Elf_Internal_Rela *rel_end; | |
252b5132 RH |
1421 | asection *sreloc; |
1422 | ||
1049f94e | 1423 | if (info->relocatable) |
b34976b6 | 1424 | return TRUE; |
252b5132 | 1425 | |
0ffa91dd NC |
1426 | BFD_ASSERT (is_i386_elf (abfd)); |
1427 | ||
6725bdbf | 1428 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
1429 | if (htab == NULL) |
1430 | return FALSE; | |
1431 | ||
0ffa91dd | 1432 | symtab_hdr = &elf_symtab_hdr (abfd); |
252b5132 | 1433 | sym_hashes = elf_sym_hashes (abfd); |
252b5132 | 1434 | |
252b5132 RH |
1435 | sreloc = NULL; |
1436 | ||
1437 | rel_end = relocs + sec->reloc_count; | |
1438 | for (rel = relocs; rel < rel_end; rel++) | |
1439 | { | |
13ae64f3 | 1440 | unsigned int r_type; |
252b5132 RH |
1441 | unsigned long r_symndx; |
1442 | struct elf_link_hash_entry *h; | |
4c544807 L |
1443 | Elf_Internal_Sym *isym; |
1444 | const char *name; | |
06a6a421 | 1445 | bfd_boolean size_reloc; |
252b5132 RH |
1446 | |
1447 | r_symndx = ELF32_R_SYM (rel->r_info); | |
13ae64f3 | 1448 | r_type = ELF32_R_TYPE (rel->r_info); |
252b5132 | 1449 | |
d9bc7a44 | 1450 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) |
f5f31454 | 1451 | { |
d003868e AM |
1452 | (*_bfd_error_handler) (_("%B: bad symbol index: %d"), |
1453 | abfd, | |
8f615d07 | 1454 | r_symndx); |
b34976b6 | 1455 | return FALSE; |
f5f31454 L |
1456 | } |
1457 | ||
252b5132 | 1458 | if (r_symndx < symtab_hdr->sh_info) |
c25bc9fc L |
1459 | { |
1460 | /* A local symbol. */ | |
c2e61a4e L |
1461 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
1462 | abfd, r_symndx); | |
1463 | if (isym == NULL) | |
1464 | return FALSE; | |
c25bc9fc L |
1465 | |
1466 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
c25bc9fc L |
1467 | if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
1468 | { | |
9fff0c39 | 1469 | h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE); |
c25bc9fc | 1470 | if (h == NULL) |
c2e61a4e | 1471 | return FALSE; |
6bbec505 | 1472 | |
c25bc9fc L |
1473 | /* Fake a STT_GNU_IFUNC symbol. */ |
1474 | h->type = STT_GNU_IFUNC; | |
1475 | h->def_regular = 1; | |
1476 | h->ref_regular = 1; | |
1477 | h->forced_local = 1; | |
1478 | h->root.type = bfd_link_hash_defined; | |
1479 | } | |
1480 | else | |
1481 | h = NULL; | |
1482 | } | |
252b5132 | 1483 | else |
71cb9464 | 1484 | { |
4c544807 | 1485 | isym = NULL; |
71cb9464 L |
1486 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
1487 | while (h->root.type == bfd_link_hash_indirect | |
1488 | || h->root.type == bfd_link_hash_warning) | |
1489 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c25bc9fc | 1490 | } |
cbe950e9 | 1491 | |
c25bc9fc L |
1492 | if (h != NULL) |
1493 | { | |
cbe950e9 L |
1494 | /* Create the ifunc sections for static executables. If we |
1495 | never see an indirect function symbol nor we are building | |
1496 | a static executable, those sections will be empty and | |
1497 | won't appear in output. */ | |
1498 | switch (r_type) | |
1499 | { | |
1500 | default: | |
1501 | break; | |
1502 | ||
1503 | case R_386_32: | |
1504 | case R_386_PC32: | |
1505 | case R_386_PLT32: | |
1506 | case R_386_GOT32: | |
1507 | case R_386_GOTOFF: | |
9d4057ee AM |
1508 | if (htab->elf.dynobj == NULL) |
1509 | htab->elf.dynobj = abfd; | |
1510 | if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
c2e61a4e | 1511 | return FALSE; |
cbe950e9 L |
1512 | break; |
1513 | } | |
1514 | ||
ad1e85de L |
1515 | /* It is referenced by a non-shared object. */ |
1516 | h->ref_regular = 1; | |
61315175 | 1517 | h->root.non_ir_ref = 1; |
71cb9464 | 1518 | } |
252b5132 | 1519 | |
142411ca L |
1520 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1521 | symtab_hdr, sym_hashes, | |
1522 | &r_type, GOT_UNKNOWN, | |
23209a78 | 1523 | rel, rel_end, h, r_symndx)) |
c2e61a4e | 1524 | return FALSE; |
13ae64f3 JJ |
1525 | |
1526 | switch (r_type) | |
252b5132 | 1527 | { |
37e55690 JJ |
1528 | case R_386_TLS_LDM: |
1529 | htab->tls_ldm_got.refcount += 1; | |
1530 | goto create_got; | |
1531 | ||
1532 | case R_386_PLT32: | |
1533 | /* This symbol requires a procedure linkage table entry. We | |
1534 | actually build the entry in adjust_dynamic_symbol, | |
1535 | because this might be a case of linking PIC code which is | |
1536 | never referenced by a dynamic object, in which case we | |
1537 | don't need to generate a procedure linkage table entry | |
1538 | after all. */ | |
1539 | ||
1540 | /* If this is a local symbol, we resolve it directly without | |
1541 | creating a procedure linkage table entry. */ | |
1542 | if (h == NULL) | |
1543 | continue; | |
1544 | ||
f5385ebf | 1545 | h->needs_plt = 1; |
37e55690 JJ |
1546 | h->plt.refcount += 1; |
1547 | break; | |
1548 | ||
6a3e1bae | 1549 | case R_386_SIZE32: |
06a6a421 | 1550 | size_reloc = TRUE; |
6a3e1bae L |
1551 | goto do_size; |
1552 | ||
13ae64f3 | 1553 | case R_386_TLS_IE_32: |
37e55690 JJ |
1554 | case R_386_TLS_IE: |
1555 | case R_386_TLS_GOTIE: | |
1d85728f | 1556 | if (!info->executable) |
13ae64f3 | 1557 | info->flags |= DF_STATIC_TLS; |
37e55690 JJ |
1558 | /* Fall through */ |
1559 | ||
252b5132 | 1560 | case R_386_GOT32: |
13ae64f3 | 1561 | case R_386_TLS_GD: |
67a4f2b7 AO |
1562 | case R_386_TLS_GOTDESC: |
1563 | case R_386_TLS_DESC_CALL: | |
252b5132 | 1564 | /* This symbol requires a global offset table entry. */ |
13ae64f3 JJ |
1565 | { |
1566 | int tls_type, old_tls_type; | |
1567 | ||
1568 | switch (r_type) | |
1569 | { | |
1570 | default: | |
1571 | case R_386_GOT32: tls_type = GOT_NORMAL; break; | |
1572 | case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; | |
67a4f2b7 AO |
1573 | case R_386_TLS_GOTDESC: |
1574 | case R_386_TLS_DESC_CALL: | |
1575 | tls_type = GOT_TLS_GDESC; break; | |
37e55690 JJ |
1576 | case R_386_TLS_IE_32: |
1577 | if (ELF32_R_TYPE (rel->r_info) == r_type) | |
1578 | tls_type = GOT_TLS_IE_NEG; | |
1579 | else | |
ebcfb3c0 JJ |
1580 | /* If this is a GD->IE transition, we may use either of |
1581 | R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ | |
37e55690 JJ |
1582 | tls_type = GOT_TLS_IE; |
1583 | break; | |
1584 | case R_386_TLS_IE: | |
1585 | case R_386_TLS_GOTIE: | |
1586 | tls_type = GOT_TLS_IE_POS; break; | |
13ae64f3 JJ |
1587 | } |
1588 | ||
1589 | if (h != NULL) | |
1590 | { | |
1591 | h->got.refcount += 1; | |
1592 | old_tls_type = elf_i386_hash_entry(h)->tls_type; | |
1593 | } | |
1594 | else | |
1595 | { | |
1596 | bfd_signed_vma *local_got_refcounts; | |
1597 | ||
1598 | /* This is a global offset table entry for a local symbol. */ | |
1599 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1600 | if (local_got_refcounts == NULL) | |
1601 | { | |
1602 | bfd_size_type size; | |
1603 | ||
1604 | size = symtab_hdr->sh_info; | |
67a4f2b7 AO |
1605 | size *= (sizeof (bfd_signed_vma) |
1606 | + sizeof (bfd_vma) + sizeof(char)); | |
a50b1753 NC |
1607 | local_got_refcounts = (bfd_signed_vma *) |
1608 | bfd_zalloc (abfd, size); | |
13ae64f3 | 1609 | if (local_got_refcounts == NULL) |
c2e61a4e | 1610 | return FALSE; |
13ae64f3 | 1611 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
67a4f2b7 AO |
1612 | elf_i386_local_tlsdesc_gotent (abfd) |
1613 | = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info); | |
13ae64f3 | 1614 | elf_i386_local_got_tls_type (abfd) |
67a4f2b7 | 1615 | = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info); |
13ae64f3 JJ |
1616 | } |
1617 | local_got_refcounts[r_symndx] += 1; | |
1618 | old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx]; | |
1619 | } | |
1620 | ||
37e55690 JJ |
1621 | if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) |
1622 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1623 | /* If a TLS symbol is accessed using IE at least once, |
1624 | there is no point to use dynamic model for it. */ | |
ebcfb3c0 | 1625 | else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN |
67a4f2b7 | 1626 | && (! GOT_TLS_GD_ANY_P (old_tls_type) |
37e55690 | 1627 | || (tls_type & GOT_TLS_IE) == 0)) |
13ae64f3 | 1628 | { |
67a4f2b7 | 1629 | if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type)) |
37e55690 | 1630 | tls_type = old_tls_type; |
67a4f2b7 AO |
1631 | else if (GOT_TLS_GD_ANY_P (old_tls_type) |
1632 | && GOT_TLS_GD_ANY_P (tls_type)) | |
1633 | tls_type |= old_tls_type; | |
13ae64f3 JJ |
1634 | else |
1635 | { | |
09a24cbf | 1636 | if (h) |
4c544807 L |
1637 | name = h->root.root.string; |
1638 | else | |
1639 | name = bfd_elf_sym_name (abfd, symtab_hdr, isym, | |
1640 | NULL); | |
13ae64f3 | 1641 | (*_bfd_error_handler) |
d003868e | 1642 | (_("%B: `%s' accessed both as normal and " |
55fd94b0 | 1643 | "thread local symbol"), |
4c544807 | 1644 | abfd, name); |
68c4a57e | 1645 | bfd_set_error (bfd_error_bad_value); |
c2e61a4e | 1646 | return FALSE; |
13ae64f3 JJ |
1647 | } |
1648 | } | |
1649 | ||
1650 | if (old_tls_type != tls_type) | |
1651 | { | |
1652 | if (h != NULL) | |
1653 | elf_i386_hash_entry (h)->tls_type = tls_type; | |
1654 | else | |
1655 | elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type; | |
1656 | } | |
1657 | } | |
0ac8d2ca AM |
1658 | /* Fall through */ |
1659 | ||
1660 | case R_386_GOTOFF: | |
1661 | case R_386_GOTPC: | |
13ae64f3 | 1662 | create_got: |
6de2ae4a | 1663 | if (htab->elf.sgot == NULL) |
0ac8d2ca AM |
1664 | { |
1665 | if (htab->elf.dynobj == NULL) | |
1666 | htab->elf.dynobj = abfd; | |
6de2ae4a | 1667 | if (!_bfd_elf_create_got_section (htab->elf.dynobj, info)) |
c2e61a4e | 1668 | return FALSE; |
0ac8d2ca | 1669 | } |
37e55690 JJ |
1670 | if (r_type != R_386_TLS_IE) |
1671 | break; | |
1672 | /* Fall through */ | |
252b5132 | 1673 | |
37e55690 JJ |
1674 | case R_386_TLS_LE_32: |
1675 | case R_386_TLS_LE: | |
1d85728f | 1676 | if (info->executable) |
37e55690 | 1677 | break; |
bffbf940 | 1678 | info->flags |= DF_STATIC_TLS; |
b34976b6 | 1679 | /* Fall through */ |
252b5132 RH |
1680 | |
1681 | case R_386_32: | |
1682 | case R_386_PC32: | |
710ab287 | 1683 | if (h != NULL && info->executable) |
6725bdbf | 1684 | { |
12d0ee4a | 1685 | /* If this reloc is in a read-only section, we might |
ebe50bae AM |
1686 | need a copy reloc. We can't check reliably at this |
1687 | stage whether the section is read-only, as input | |
1688 | sections have not yet been mapped to output sections. | |
1689 | Tentatively set the flag for now, and correct in | |
1690 | adjust_dynamic_symbol. */ | |
f5385ebf | 1691 | h->non_got_ref = 1; |
12d0ee4a AM |
1692 | |
1693 | /* We may need a .plt entry if the function this reloc | |
1694 | refers to is in a shared lib. */ | |
51b64d56 | 1695 | h->plt.refcount += 1; |
c6585bbb | 1696 | if (r_type != R_386_PC32) |
f5385ebf | 1697 | h->pointer_equality_needed = 1; |
6725bdbf | 1698 | } |
7843f00e | 1699 | |
06a6a421 | 1700 | size_reloc = FALSE; |
6a3e1bae | 1701 | do_size: |
252b5132 | 1702 | /* If we are creating a shared library, and this is a reloc |
f69da49f AM |
1703 | against a global symbol, or a non PC relative reloc |
1704 | against a local symbol, then we need to copy the reloc | |
1705 | into the shared library. However, if we are linking with | |
1706 | -Bsymbolic, we do not need to copy a reloc against a | |
1707 | global symbol which is defined in an object we are | |
1708 | including in the link (i.e., DEF_REGULAR is set). At | |
1709 | this point we have not seen all the input files, so it is | |
1710 | possible that DEF_REGULAR is not set now but will be set | |
1f655a09 L |
1711 | later (it is never cleared). In case of a weak definition, |
1712 | DEF_REGULAR may be cleared later by a strong definition in | |
ebe50bae | 1713 | a shared library. We account for that possibility below by |
1f655a09 L |
1714 | storing information in the relocs_copied field of the hash |
1715 | table entry. A similar situation occurs when creating | |
1716 | shared libraries and symbol visibility changes render the | |
12d0ee4a | 1717 | symbol local. |
56882138 | 1718 | |
12d0ee4a AM |
1719 | If on the other hand, we are creating an executable, we |
1720 | may need to keep relocations for symbols satisfied by a | |
1721 | dynamic library if we manage to avoid copy relocs for the | |
1722 | symbol. */ | |
1723 | if ((info->shared | |
1724 | && (sec->flags & SEC_ALLOC) != 0 | |
13ae64f3 | 1725 | && (r_type != R_386_PC32 |
12d0ee4a | 1726 | || (h != NULL |
55255dae | 1727 | && (! SYMBOLIC_BIND (info, h) |
12d0ee4a | 1728 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 1729 | || !h->def_regular)))) |
a23b6845 AM |
1730 | || (ELIMINATE_COPY_RELOCS |
1731 | && !info->shared | |
12d0ee4a AM |
1732 | && (sec->flags & SEC_ALLOC) != 0 |
1733 | && h != NULL | |
12d0ee4a | 1734 | && (h->root.type == bfd_link_hash_defweak |
0f88be7a | 1735 | || !h->def_regular))) |
252b5132 | 1736 | { |
e03a8ed8 L |
1737 | struct elf_dyn_relocs *p; |
1738 | struct elf_dyn_relocs **head; | |
ec338859 | 1739 | |
12d0ee4a AM |
1740 | /* We must copy these reloc types into the output file. |
1741 | Create a reloc section in dynobj and make room for | |
1742 | this reloc. */ | |
252b5132 RH |
1743 | if (sreloc == NULL) |
1744 | { | |
0ac8d2ca AM |
1745 | if (htab->elf.dynobj == NULL) |
1746 | htab->elf.dynobj = abfd; | |
1747 | ||
83bac4b0 NC |
1748 | sreloc = _bfd_elf_make_dynamic_reloc_section |
1749 | (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE); | |
1750 | ||
252b5132 | 1751 | if (sreloc == NULL) |
c2e61a4e | 1752 | return FALSE; |
252b5132 RH |
1753 | } |
1754 | ||
0c715baa AM |
1755 | /* If this is a global symbol, we count the number of |
1756 | relocations we need for this symbol. */ | |
1757 | if (h != NULL) | |
252b5132 | 1758 | { |
ec338859 | 1759 | head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs; |
0c715baa AM |
1760 | } |
1761 | else | |
1762 | { | |
ec338859 AM |
1763 | /* Track dynamic relocs needed for local syms too. |
1764 | We really need local syms available to do this | |
1765 | easily. Oh well. */ | |
87d72d41 | 1766 | void **vpp; |
ec338859 | 1767 | asection *s; |
87d72d41 AM |
1768 | |
1769 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1770 | abfd, r_symndx); | |
1771 | if (isym == NULL) | |
1772 | return FALSE; | |
1773 | ||
1774 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
ec338859 | 1775 | if (s == NULL) |
87d72d41 | 1776 | s = sec; |
ec338859 | 1777 | |
e81d3500 | 1778 | vpp = &elf_section_data (s)->local_dynrel; |
e03a8ed8 | 1779 | head = (struct elf_dyn_relocs **)vpp; |
ec338859 AM |
1780 | } |
1781 | ||
1782 | p = *head; | |
1783 | if (p == NULL || p->sec != sec) | |
1784 | { | |
1785 | bfd_size_type amt = sizeof *p; | |
a50b1753 NC |
1786 | p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj, |
1787 | amt); | |
ec338859 | 1788 | if (p == NULL) |
c2e61a4e | 1789 | return FALSE; |
ec338859 AM |
1790 | p->next = *head; |
1791 | *head = p; | |
1792 | p->sec = sec; | |
1793 | p->count = 0; | |
1794 | p->pc_count = 0; | |
252b5132 | 1795 | } |
ec338859 AM |
1796 | |
1797 | p->count += 1; | |
06a6a421 L |
1798 | /* Count size relocation as PC-relative relocation. */ |
1799 | if (r_type == R_386_PC32 || size_reloc) | |
ec338859 | 1800 | p->pc_count += 1; |
252b5132 | 1801 | } |
252b5132 RH |
1802 | break; |
1803 | ||
1804 | /* This relocation describes the C++ object vtable hierarchy. | |
1805 | Reconstruct it for later use during GC. */ | |
1806 | case R_386_GNU_VTINHERIT: | |
d17e0c6e | 1807 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
c2e61a4e | 1808 | return FALSE; |
252b5132 RH |
1809 | break; |
1810 | ||
1811 | /* This relocation describes which C++ vtable entries are actually | |
1812 | used. Record for later use during GC. */ | |
1813 | case R_386_GNU_VTENTRY: | |
c6aa130f MS |
1814 | BFD_ASSERT (h != NULL); |
1815 | if (h != NULL | |
1816 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
c2e61a4e | 1817 | return FALSE; |
252b5132 RH |
1818 | break; |
1819 | ||
1820 | default: | |
1821 | break; | |
1822 | } | |
1823 | } | |
1824 | ||
b34976b6 | 1825 | return TRUE; |
252b5132 RH |
1826 | } |
1827 | ||
1828 | /* Return the section that should be marked against GC for a given | |
1829 | relocation. */ | |
1830 | ||
1831 | static asection * | |
55fd94b0 | 1832 | elf_i386_gc_mark_hook (asection *sec, |
07adf181 | 1833 | struct bfd_link_info *info, |
55fd94b0 AM |
1834 | Elf_Internal_Rela *rel, |
1835 | struct elf_link_hash_entry *h, | |
1836 | Elf_Internal_Sym *sym) | |
252b5132 RH |
1837 | { |
1838 | if (h != NULL) | |
07adf181 AM |
1839 | switch (ELF32_R_TYPE (rel->r_info)) |
1840 | { | |
1841 | case R_386_GNU_VTINHERIT: | |
1842 | case R_386_GNU_VTENTRY: | |
1843 | return NULL; | |
1844 | } | |
1845 | ||
1846 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
252b5132 RH |
1847 | } |
1848 | ||
1849 | /* Update the got entry reference counts for the section being removed. */ | |
1850 | ||
b34976b6 | 1851 | static bfd_boolean |
55fd94b0 AM |
1852 | elf_i386_gc_sweep_hook (bfd *abfd, |
1853 | struct bfd_link_info *info, | |
1854 | asection *sec, | |
1855 | const Elf_Internal_Rela *relocs) | |
252b5132 | 1856 | { |
4dfe6ac6 | 1857 | struct elf_i386_link_hash_table *htab; |
dd5724d5 AM |
1858 | Elf_Internal_Shdr *symtab_hdr; |
1859 | struct elf_link_hash_entry **sym_hashes; | |
1860 | bfd_signed_vma *local_got_refcounts; | |
1861 | const Elf_Internal_Rela *rel, *relend; | |
dd5724d5 | 1862 | |
7dda2462 TG |
1863 | if (info->relocatable) |
1864 | return TRUE; | |
1865 | ||
4dfe6ac6 NC |
1866 | htab = elf_i386_hash_table (info); |
1867 | if (htab == NULL) | |
1868 | return FALSE; | |
1869 | ||
ec338859 | 1870 | elf_section_data (sec)->local_dynrel = NULL; |
dd5724d5 | 1871 | |
0ffa91dd | 1872 | symtab_hdr = &elf_symtab_hdr (abfd); |
6725bdbf AM |
1873 | sym_hashes = elf_sym_hashes (abfd); |
1874 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
dd5724d5 AM |
1875 | |
1876 | relend = relocs + sec->reloc_count; | |
1877 | for (rel = relocs; rel < relend; rel++) | |
26e41594 AM |
1878 | { |
1879 | unsigned long r_symndx; | |
1880 | unsigned int r_type; | |
1881 | struct elf_link_hash_entry *h = NULL; | |
37e55690 | 1882 | |
26e41594 AM |
1883 | r_symndx = ELF32_R_SYM (rel->r_info); |
1884 | if (r_symndx >= symtab_hdr->sh_info) | |
1885 | { | |
26e41594 | 1886 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
3eb128b2 AM |
1887 | while (h->root.type == bfd_link_hash_indirect |
1888 | || h->root.type == bfd_link_hash_warning) | |
1889 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
26e41594 | 1890 | } |
bb1cb422 L |
1891 | else |
1892 | { | |
1893 | /* A local symbol. */ | |
1894 | Elf_Internal_Sym *isym; | |
1895 | ||
1896 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
1897 | abfd, r_symndx); | |
1898 | ||
1899 | /* Check relocation against local STT_GNU_IFUNC symbol. */ | |
1900 | if (isym != NULL | |
1901 | && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
1902 | { | |
1903 | h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE); | |
1904 | if (h == NULL) | |
1905 | abort (); | |
1906 | } | |
1907 | } | |
0c715baa | 1908 | |
3db2e7dd L |
1909 | if (h) |
1910 | { | |
1911 | struct elf_i386_link_hash_entry *eh; | |
1912 | struct elf_dyn_relocs **pp; | |
1913 | struct elf_dyn_relocs *p; | |
1914 | ||
1915 | eh = (struct elf_i386_link_hash_entry *) h; | |
1916 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
1917 | if (p->sec == sec) | |
1918 | { | |
1919 | /* Everything must go for SEC. */ | |
1920 | *pp = p->next; | |
1921 | break; | |
1922 | } | |
1923 | } | |
1924 | ||
26e41594 | 1925 | r_type = ELF32_R_TYPE (rel->r_info); |
142411ca L |
1926 | if (! elf_i386_tls_transition (info, abfd, sec, NULL, |
1927 | symtab_hdr, sym_hashes, | |
1928 | &r_type, GOT_UNKNOWN, | |
23209a78 | 1929 | rel, relend, h, r_symndx)) |
142411ca L |
1930 | return FALSE; |
1931 | ||
26e41594 AM |
1932 | switch (r_type) |
1933 | { | |
1934 | case R_386_TLS_LDM: | |
4dfe6ac6 NC |
1935 | if (htab->tls_ldm_got.refcount > 0) |
1936 | htab->tls_ldm_got.refcount -= 1; | |
26e41594 | 1937 | break; |
0c715baa | 1938 | |
26e41594 | 1939 | case R_386_TLS_GD: |
67a4f2b7 AO |
1940 | case R_386_TLS_GOTDESC: |
1941 | case R_386_TLS_DESC_CALL: | |
26e41594 AM |
1942 | case R_386_TLS_IE_32: |
1943 | case R_386_TLS_IE: | |
1944 | case R_386_TLS_GOTIE: | |
1945 | case R_386_GOT32: | |
1946 | if (h != NULL) | |
1947 | { | |
1948 | if (h->got.refcount > 0) | |
1949 | h->got.refcount -= 1; | |
bb1cb422 L |
1950 | if (h->type == STT_GNU_IFUNC) |
1951 | { | |
1952 | if (h->plt.refcount > 0) | |
1953 | h->plt.refcount -= 1; | |
1954 | } | |
26e41594 AM |
1955 | } |
1956 | else if (local_got_refcounts != NULL) | |
1957 | { | |
1958 | if (local_got_refcounts[r_symndx] > 0) | |
1959 | local_got_refcounts[r_symndx] -= 1; | |
1960 | } | |
1961 | break; | |
0c715baa | 1962 | |
26e41594 AM |
1963 | case R_386_32: |
1964 | case R_386_PC32: | |
1788fc08 | 1965 | case R_386_SIZE32: |
3db2e7dd L |
1966 | if (info->shared |
1967 | && (h == NULL || h->type != STT_GNU_IFUNC)) | |
26e41594 AM |
1968 | break; |
1969 | /* Fall through */ | |
6725bdbf | 1970 | |
26e41594 AM |
1971 | case R_386_PLT32: |
1972 | if (h != NULL) | |
1973 | { | |
1974 | if (h->plt.refcount > 0) | |
1975 | h->plt.refcount -= 1; | |
1976 | } | |
1977 | break; | |
dd5724d5 | 1978 | |
bb1cb422 L |
1979 | case R_386_GOTOFF: |
1980 | if (h != NULL && h->type == STT_GNU_IFUNC) | |
1981 | { | |
1982 | if (h->got.refcount > 0) | |
1983 | h->got.refcount -= 1; | |
1984 | if (h->plt.refcount > 0) | |
1985 | h->plt.refcount -= 1; | |
1986 | } | |
1987 | break; | |
1988 | ||
26e41594 AM |
1989 | default: |
1990 | break; | |
1991 | } | |
1992 | } | |
252b5132 | 1993 | |
b34976b6 | 1994 | return TRUE; |
252b5132 RH |
1995 | } |
1996 | ||
1997 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1998 | regular object. The current definition is in some section of the | |
1999 | dynamic object, but we're not including those sections. We have to | |
2000 | change the definition to something the rest of the link can | |
2001 | understand. */ | |
2002 | ||
b34976b6 | 2003 | static bfd_boolean |
55fd94b0 AM |
2004 | elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info, |
2005 | struct elf_link_hash_entry *h) | |
252b5132 | 2006 | { |
6725bdbf | 2007 | struct elf_i386_link_hash_table *htab; |
252b5132 | 2008 | asection *s; |
5ca5bb35 L |
2009 | struct elf_i386_link_hash_entry *eh; |
2010 | struct elf_dyn_relocs *p; | |
252b5132 | 2011 | |
cbe950e9 L |
2012 | /* STT_GNU_IFUNC symbol must go through PLT. */ |
2013 | if (h->type == STT_GNU_IFUNC) | |
2014 | { | |
73bcf233 L |
2015 | /* All local STT_GNU_IFUNC references must be treate as local |
2016 | calls via local PLT. */ | |
5ca5bb35 L |
2017 | if (h->ref_regular |
2018 | && SYMBOL_CALLS_LOCAL (info, h)) | |
2019 | { | |
73bcf233 | 2020 | bfd_size_type pc_count = 0, count = 0; |
5ca5bb35 L |
2021 | struct elf_dyn_relocs **pp; |
2022 | ||
2023 | eh = (struct elf_i386_link_hash_entry *) h; | |
2024 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2025 | { | |
2026 | pc_count += p->pc_count; | |
2027 | p->count -= p->pc_count; | |
2028 | p->pc_count = 0; | |
73bcf233 | 2029 | count += p->count; |
5ca5bb35 L |
2030 | if (p->count == 0) |
2031 | *pp = p->next; | |
2032 | else | |
2033 | pp = &p->next; | |
2034 | } | |
2035 | ||
73bcf233 | 2036 | if (pc_count || count) |
5ca5bb35 L |
2037 | { |
2038 | h->needs_plt = 1; | |
5ca5bb35 | 2039 | h->non_got_ref = 1; |
a5479e5f L |
2040 | if (h->plt.refcount <= 0) |
2041 | h->plt.refcount = 1; | |
2042 | else | |
2043 | h->plt.refcount += 1; | |
5ca5bb35 L |
2044 | } |
2045 | } | |
2046 | ||
cbe950e9 L |
2047 | if (h->plt.refcount <= 0) |
2048 | { | |
2049 | h->plt.offset = (bfd_vma) -1; | |
2050 | h->needs_plt = 0; | |
2051 | } | |
2052 | return TRUE; | |
2053 | } | |
2054 | ||
252b5132 RH |
2055 | /* If this is a function, put it in the procedure linkage table. We |
2056 | will fill in the contents of the procedure linkage table later, | |
2057 | when we know the address of the .got section. */ | |
2058 | if (h->type == STT_FUNC | |
f5385ebf | 2059 | || h->needs_plt) |
252b5132 | 2060 | { |
6725bdbf | 2061 | if (h->plt.refcount <= 0 |
9c7a29a3 AM |
2062 | || SYMBOL_CALLS_LOCAL (info, h) |
2063 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
2064 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
2065 | { |
2066 | /* This case can occur if we saw a PLT32 reloc in an input | |
dd5724d5 AM |
2067 | file, but the symbol was never referred to by a dynamic |
2068 | object, or if all references were garbage collected. In | |
2069 | such a case, we don't actually need to build a procedure | |
2070 | linkage table, and we can just do a PC32 reloc instead. */ | |
bbd7ec4a | 2071 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2072 | h->needs_plt = 0; |
252b5132 RH |
2073 | } |
2074 | ||
b34976b6 | 2075 | return TRUE; |
252b5132 | 2076 | } |
6725bdbf AM |
2077 | else |
2078 | /* It's possible that we incorrectly decided a .plt reloc was | |
2079 | needed for an R_386_PC32 reloc to a non-function sym in | |
2080 | check_relocs. We can't decide accurately between function and | |
2081 | non-function syms in check-relocs; Objects loaded later in | |
2082 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 2083 | h->plt.offset = (bfd_vma) -1; |
252b5132 RH |
2084 | |
2085 | /* If this is a weak symbol, and there is a real definition, the | |
2086 | processor independent code will have arranged for us to see the | |
2087 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 2088 | if (h->u.weakdef != NULL) |
252b5132 | 2089 | { |
f6e332e6 AM |
2090 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
2091 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
2092 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
2093 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 2094 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) |
f6e332e6 | 2095 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 2096 | return TRUE; |
252b5132 RH |
2097 | } |
2098 | ||
2099 | /* This is a reference to a symbol defined by a dynamic object which | |
2100 | is not a function. */ | |
2101 | ||
2102 | /* If we are creating a shared library, we must presume that the | |
2103 | only references to the symbol are via the global offset table. | |
2104 | For such cases we need not do anything here; the relocations will | |
2105 | be handled correctly by relocate_section. */ | |
2106 | if (info->shared) | |
b34976b6 | 2107 | return TRUE; |
252b5132 | 2108 | |
7843f00e ILT |
2109 | /* If there are no references to this symbol that do not use the |
2110 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 2111 | if (!h->non_got_ref) |
b34976b6 | 2112 | return TRUE; |
7843f00e | 2113 | |
8bd621d8 AM |
2114 | /* If -z nocopyreloc was given, we won't generate them either. */ |
2115 | if (info->nocopyreloc) | |
2116 | { | |
f5385ebf | 2117 | h->non_got_ref = 0; |
b34976b6 | 2118 | return TRUE; |
8bd621d8 AM |
2119 | } |
2120 | ||
643796e3 | 2121 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
2122 | if (htab == NULL) |
2123 | return FALSE; | |
643796e3 DJ |
2124 | |
2125 | /* If there aren't any dynamic relocs in read-only sections, then | |
2126 | we can keep the dynamic relocs and avoid the copy reloc. This | |
2127 | doesn't work on VxWorks, where we can not have dynamic relocations | |
2128 | (other than copy and jump slot relocations) in an executable. */ | |
23209a78 RM |
2129 | if (ELIMINATE_COPY_RELOCS |
2130 | && !get_elf_i386_backend_data (info->output_bfd)->is_vxworks) | |
ebe50bae | 2131 | { |
a23b6845 AM |
2132 | eh = (struct elf_i386_link_hash_entry *) h; |
2133 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2134 | { | |
2135 | s = p->sec->output_section; | |
2136 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2137 | break; | |
2138 | } | |
2139 | ||
a23b6845 AM |
2140 | if (p == NULL) |
2141 | { | |
f5385ebf | 2142 | h->non_got_ref = 0; |
a23b6845 AM |
2143 | return TRUE; |
2144 | } | |
ebe50bae AM |
2145 | } |
2146 | ||
252b5132 RH |
2147 | /* We must allocate the symbol in our .dynbss section, which will |
2148 | become part of the .bss section of the executable. There will be | |
2149 | an entry for this symbol in the .dynsym section. The dynamic | |
2150 | object will contain position independent code, so all references | |
2151 | from the dynamic object to this symbol will go through the global | |
2152 | offset table. The dynamic linker will use the .dynsym entry to | |
2153 | determine the address it must put in the global offset table, so | |
2154 | both the dynamic object and the regular object will refer to the | |
2155 | same memory location for the variable. */ | |
2156 | ||
252b5132 RH |
2157 | /* We must generate a R_386_COPY reloc to tell the dynamic linker to |
2158 | copy the initial value out of the dynamic object and into the | |
0ac8d2ca | 2159 | runtime process image. */ |
1d7e9d18 | 2160 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
252b5132 | 2161 | { |
eea6121a | 2162 | htab->srelbss->size += sizeof (Elf32_External_Rel); |
f5385ebf | 2163 | h->needs_copy = 1; |
252b5132 RH |
2164 | } |
2165 | ||
0ac8d2ca | 2166 | s = htab->sdynbss; |
252b5132 | 2167 | |
027297b7 | 2168 | return _bfd_elf_adjust_dynamic_copy (h, s); |
252b5132 RH |
2169 | } |
2170 | ||
6725bdbf | 2171 | /* Allocate space in .plt, .got and associated reloc sections for |
0c715baa | 2172 | dynamic relocs. */ |
6725bdbf | 2173 | |
b34976b6 | 2174 | static bfd_boolean |
eb4ff4d6 | 2175 | elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
6725bdbf AM |
2176 | { |
2177 | struct bfd_link_info *info; | |
2178 | struct elf_i386_link_hash_table *htab; | |
5a15f56f | 2179 | struct elf_i386_link_hash_entry *eh; |
e03a8ed8 | 2180 | struct elf_dyn_relocs *p; |
25e762b9 | 2181 | unsigned plt_entry_size; |
6725bdbf | 2182 | |
e92d460e | 2183 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 2184 | return TRUE; |
6725bdbf | 2185 | |
cbe950e9 | 2186 | eh = (struct elf_i386_link_hash_entry *) h; |
e92d460e | 2187 | |
6725bdbf AM |
2188 | info = (struct bfd_link_info *) inf; |
2189 | htab = elf_i386_hash_table (info); | |
4dfe6ac6 NC |
2190 | if (htab == NULL) |
2191 | return FALSE; | |
6725bdbf | 2192 | |
25e762b9 RM |
2193 | plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd); |
2194 | ||
cbe950e9 L |
2195 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it |
2196 | here if it is defined and referenced in a non-shared object. */ | |
2197 | if (h->type == STT_GNU_IFUNC | |
2198 | && h->def_regular) | |
25e762b9 | 2199 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs, |
7b70956d WN |
2200 | plt_entry_size, |
2201 | plt_entry_size, 4); | |
cbe950e9 L |
2202 | else if (htab->elf.dynamic_sections_created |
2203 | && h->plt.refcount > 0) | |
6725bdbf | 2204 | { |
5a15f56f AM |
2205 | /* Make sure this symbol is output as a dynamic symbol. |
2206 | Undefined weak syms won't yet be marked as dynamic. */ | |
2207 | if (h->dynindx == -1 | |
f5385ebf | 2208 | && !h->forced_local) |
5a15f56f | 2209 | { |
c152c796 | 2210 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2211 | return FALSE; |
5a15f56f AM |
2212 | } |
2213 | ||
4e795f50 AM |
2214 | if (info->shared |
2215 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
ced53ee5 | 2216 | { |
6de2ae4a | 2217 | asection *s = htab->elf.splt; |
6725bdbf | 2218 | |
ced53ee5 AM |
2219 | /* If this is the first .plt entry, make room for the special |
2220 | first entry. */ | |
eea6121a | 2221 | if (s->size == 0) |
bb81b736 | 2222 | s->size = plt_entry_size; |
6725bdbf | 2223 | |
eea6121a | 2224 | h->plt.offset = s->size; |
6725bdbf | 2225 | |
ced53ee5 AM |
2226 | /* If this symbol is not defined in a regular file, and we are |
2227 | not generating a shared library, then set the symbol to this | |
2228 | location in the .plt. This is required to make function | |
2229 | pointers compare as equal between the normal executable and | |
2230 | the shared library. */ | |
2231 | if (! info->shared | |
f5385ebf | 2232 | && !h->def_regular) |
ced53ee5 AM |
2233 | { |
2234 | h->root.u.def.section = s; | |
2235 | h->root.u.def.value = h->plt.offset; | |
2236 | } | |
6725bdbf | 2237 | |
ced53ee5 | 2238 | /* Make room for this entry. */ |
25e762b9 | 2239 | s->size += plt_entry_size; |
6725bdbf | 2240 | |
ced53ee5 AM |
2241 | /* We also need to make an entry in the .got.plt section, which |
2242 | will be placed in the .got section by the linker script. */ | |
6de2ae4a | 2243 | htab->elf.sgotplt->size += 4; |
6725bdbf | 2244 | |
6725bdbf | 2245 | /* We also need to make an entry in the .rel.plt section. */ |
6de2ae4a | 2246 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
e1f98742 | 2247 | htab->elf.srelplt->reloc_count++; |
eac338cf | 2248 | |
23209a78 RM |
2249 | if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks |
2250 | && !info->shared) | |
eac338cf PB |
2251 | { |
2252 | /* VxWorks has a second set of relocations for each PLT entry | |
2253 | in executables. They go in a separate relocation section, | |
2254 | which is processed by the kernel loader. */ | |
2255 | ||
2256 | /* There are two relocations for the initial PLT entry: an | |
2257 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an | |
2258 | R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
2259 | ||
25e762b9 | 2260 | if (h->plt.offset == plt_entry_size) |
eac338cf PB |
2261 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); |
2262 | ||
2263 | /* There are two extra relocations for each subsequent PLT entry: | |
2264 | an R_386_32 relocation for the GOT entry, and an R_386_32 | |
2265 | relocation for the PLT entry. */ | |
2266 | ||
2267 | htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); | |
2268 | } | |
6725bdbf | 2269 | } |
ced53ee5 AM |
2270 | else |
2271 | { | |
51b64d56 | 2272 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2273 | h->needs_plt = 0; |
ced53ee5 | 2274 | } |
6725bdbf AM |
2275 | } |
2276 | else | |
2277 | { | |
51b64d56 | 2278 | h->plt.offset = (bfd_vma) -1; |
f5385ebf | 2279 | h->needs_plt = 0; |
6725bdbf AM |
2280 | } |
2281 | ||
67a4f2b7 AO |
2282 | eh->tlsdesc_got = (bfd_vma) -1; |
2283 | ||
37e55690 | 2284 | /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, |
13ae64f3 JJ |
2285 | make it a R_386_TLS_LE_32 requiring no TLS entry. */ |
2286 | if (h->got.refcount > 0 | |
1d85728f | 2287 | && info->executable |
13ae64f3 | 2288 | && h->dynindx == -1 |
37e55690 | 2289 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE)) |
cedb70c5 | 2290 | h->got.offset = (bfd_vma) -1; |
13ae64f3 | 2291 | else if (h->got.refcount > 0) |
6725bdbf | 2292 | { |
0ac8d2ca | 2293 | asection *s; |
b34976b6 | 2294 | bfd_boolean dyn; |
13ae64f3 | 2295 | int tls_type = elf_i386_hash_entry(h)->tls_type; |
6725bdbf | 2296 | |
5a15f56f AM |
2297 | /* Make sure this symbol is output as a dynamic symbol. |
2298 | Undefined weak syms won't yet be marked as dynamic. */ | |
2299 | if (h->dynindx == -1 | |
f5385ebf | 2300 | && !h->forced_local) |
5a15f56f | 2301 | { |
c152c796 | 2302 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2303 | return FALSE; |
5a15f56f AM |
2304 | } |
2305 | ||
6de2ae4a | 2306 | s = htab->elf.sgot; |
67a4f2b7 AO |
2307 | if (GOT_TLS_GDESC_P (tls_type)) |
2308 | { | |
6de2ae4a | 2309 | eh->tlsdesc_got = htab->elf.sgotplt->size |
67a4f2b7 | 2310 | - elf_i386_compute_jump_table_size (htab); |
6de2ae4a | 2311 | htab->elf.sgotplt->size += 8; |
67a4f2b7 AO |
2312 | h->got.offset = (bfd_vma) -2; |
2313 | } | |
2314 | if (! GOT_TLS_GDESC_P (tls_type) | |
2315 | || GOT_TLS_GD_P (tls_type)) | |
2316 | { | |
2317 | h->got.offset = s->size; | |
2318 | s->size += 4; | |
2319 | /* R_386_TLS_GD needs 2 consecutive GOT slots. */ | |
2320 | if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH) | |
2321 | s->size += 4; | |
2322 | } | |
ebe50bae | 2323 | dyn = htab->elf.dynamic_sections_created; |
13ae64f3 | 2324 | /* R_386_TLS_IE_32 needs one dynamic relocation, |
37e55690 JJ |
2325 | R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, |
2326 | (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we | |
2327 | need two), R_386_TLS_GD needs one if local symbol and two if | |
2328 | global. */ | |
2329 | if (tls_type == GOT_TLS_IE_BOTH) | |
6de2ae4a | 2330 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 | 2331 | else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1) |
37e55690 | 2332 | || (tls_type & GOT_TLS_IE)) |
6de2ae4a | 2333 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2334 | else if (GOT_TLS_GD_P (tls_type)) |
6de2ae4a | 2335 | htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2336 | else if (! GOT_TLS_GDESC_P (tls_type) |
2337 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2338 | || h->root.type != bfd_link_hash_undefweak) | |
ef5aade5 L |
2339 | && (info->shared |
2340 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
6de2ae4a | 2341 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2342 | if (GOT_TLS_GDESC_P (tls_type)) |
6de2ae4a | 2343 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
6725bdbf AM |
2344 | } |
2345 | else | |
51b64d56 | 2346 | h->got.offset = (bfd_vma) -1; |
6725bdbf | 2347 | |
5a15f56f | 2348 | if (eh->dyn_relocs == NULL) |
b34976b6 | 2349 | return TRUE; |
5a15f56f | 2350 | |
0c715baa AM |
2351 | /* In the shared -Bsymbolic case, discard space allocated for |
2352 | dynamic pc-relative relocs against symbols which turn out to be | |
2353 | defined in regular objects. For the normal shared case, discard | |
0ac8d2ca AM |
2354 | space for pc-relative relocs that have become local due to symbol |
2355 | visibility changes. */ | |
0c715baa AM |
2356 | |
2357 | if (info->shared) | |
5a15f56f | 2358 | { |
09695f56 AM |
2359 | /* The only reloc that uses pc_count is R_386_PC32, which will |
2360 | appear on a call or on something like ".long foo - .". We | |
2361 | want calls to protected symbols to resolve directly to the | |
2362 | function rather than going via the plt. If people want | |
2363 | function pointer comparisons to work as expected then they | |
2364 | should avoid writing assembly like ".long foo - .". */ | |
2365 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
5a15f56f | 2366 | { |
e03a8ed8 | 2367 | struct elf_dyn_relocs **pp; |
0c715baa AM |
2368 | |
2369 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
2370 | { | |
2371 | p->count -= p->pc_count; | |
2372 | p->pc_count = 0; | |
2373 | if (p->count == 0) | |
2374 | *pp = p->next; | |
2375 | else | |
2376 | pp = &p->next; | |
2377 | } | |
5a15f56f | 2378 | } |
4e795f50 | 2379 | |
23209a78 | 2380 | if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks) |
3348747a | 2381 | { |
e03a8ed8 | 2382 | struct elf_dyn_relocs **pp; |
3348747a NS |
2383 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
2384 | { | |
2385 | if (strcmp (p->sec->output_section->name, ".tls_vars") == 0) | |
2386 | *pp = p->next; | |
2387 | else | |
2388 | pp = &p->next; | |
2389 | } | |
2390 | } | |
2391 | ||
4e795f50 | 2392 | /* Also discard relocs on undefined weak syms with non-default |
3348747a | 2393 | visibility. */ |
22d606e9 | 2394 | if (eh->dyn_relocs != NULL |
4e795f50 | 2395 | && h->root.type == bfd_link_hash_undefweak) |
22d606e9 AM |
2396 | { |
2397 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2398 | eh->dyn_relocs = NULL; | |
2399 | ||
2400 | /* Make sure undefined weak symbols are output as a dynamic | |
2401 | symbol in PIEs. */ | |
2402 | else if (h->dynindx == -1 | |
2403 | && !h->forced_local) | |
2404 | { | |
2405 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2406 | return FALSE; | |
2407 | } | |
2408 | } | |
0c715baa | 2409 | } |
a23b6845 | 2410 | else if (ELIMINATE_COPY_RELOCS) |
0c715baa AM |
2411 | { |
2412 | /* For the non-shared case, discard space for relocs against | |
2413 | symbols which turn out to need copy relocs or are not | |
2414 | dynamic. */ | |
2415 | ||
f5385ebf AM |
2416 | if (!h->non_got_ref |
2417 | && ((h->def_dynamic | |
2418 | && !h->def_regular) | |
ebe50bae | 2419 | || (htab->elf.dynamic_sections_created |
0c715baa AM |
2420 | && (h->root.type == bfd_link_hash_undefweak |
2421 | || h->root.type == bfd_link_hash_undefined)))) | |
2422 | { | |
2423 | /* Make sure this symbol is output as a dynamic symbol. | |
2424 | Undefined weak syms won't yet be marked as dynamic. */ | |
2425 | if (h->dynindx == -1 | |
f5385ebf | 2426 | && !h->forced_local) |
0c715baa | 2427 | { |
c152c796 | 2428 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 2429 | return FALSE; |
0c715baa | 2430 | } |
5a15f56f | 2431 | |
0c715baa AM |
2432 | /* If that succeeded, we know we'll be keeping all the |
2433 | relocs. */ | |
2434 | if (h->dynindx != -1) | |
2435 | goto keep; | |
2436 | } | |
2437 | ||
2438 | eh->dyn_relocs = NULL; | |
2439 | ||
ec338859 | 2440 | keep: ; |
5a15f56f AM |
2441 | } |
2442 | ||
0c715baa AM |
2443 | /* Finally, allocate space. */ |
2444 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
12d0ee4a | 2445 | { |
e7c33416 NC |
2446 | asection *sreloc; |
2447 | ||
cbe950e9 | 2448 | sreloc = elf_section_data (p->sec)->sreloc; |
e7c33416 NC |
2449 | |
2450 | BFD_ASSERT (sreloc != NULL); | |
eea6121a | 2451 | sreloc->size += p->count * sizeof (Elf32_External_Rel); |
12d0ee4a AM |
2452 | } |
2453 | ||
b34976b6 | 2454 | return TRUE; |
6725bdbf AM |
2455 | } |
2456 | ||
c25bc9fc L |
2457 | /* Allocate space in .plt, .got and associated reloc sections for |
2458 | local dynamic relocs. */ | |
2459 | ||
2460 | static bfd_boolean | |
2461 | elf_i386_allocate_local_dynrelocs (void **slot, void *inf) | |
2462 | { | |
2463 | struct elf_link_hash_entry *h | |
2464 | = (struct elf_link_hash_entry *) *slot; | |
2465 | ||
2466 | if (h->type != STT_GNU_IFUNC | |
2467 | || !h->def_regular | |
2468 | || !h->ref_regular | |
2469 | || !h->forced_local | |
2470 | || h->root.type != bfd_link_hash_defined) | |
2471 | abort (); | |
2472 | ||
2473 | return elf_i386_allocate_dynrelocs (h, inf); | |
2474 | } | |
2475 | ||
0c715baa AM |
2476 | /* Find any dynamic relocs that apply to read-only sections. */ |
2477 | ||
b34976b6 | 2478 | static bfd_boolean |
eb4ff4d6 | 2479 | elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
0c715baa AM |
2480 | { |
2481 | struct elf_i386_link_hash_entry *eh; | |
e03a8ed8 | 2482 | struct elf_dyn_relocs *p; |
0c715baa | 2483 | |
aa715242 L |
2484 | /* Skip local IFUNC symbols. */ |
2485 | if (h->forced_local && h->type == STT_GNU_IFUNC) | |
2486 | return TRUE; | |
2487 | ||
0c715baa AM |
2488 | eh = (struct elf_i386_link_hash_entry *) h; |
2489 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2490 | { | |
2491 | asection *s = p->sec->output_section; | |
2492 | ||
2493 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2494 | { | |
2495 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2496 | ||
2497 | info->flags |= DF_TEXTREL; | |
2498 | ||
b70321a2 L |
2499 | if (info->warn_shared_textrel && info->shared) |
2500 | info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"), | |
2501 | p->sec->owner, h->root.root.string, | |
2502 | p->sec); | |
2503 | ||
0c715baa | 2504 | /* Not an error, just cut short the traversal. */ |
b34976b6 | 2505 | return FALSE; |
0c715baa AM |
2506 | } |
2507 | } | |
b34976b6 | 2508 | return TRUE; |
0c715baa AM |
2509 | } |
2510 | ||
daa67607 L |
2511 | /* Convert |
2512 | mov foo@GOT(%reg), %reg | |
2513 | to | |
2514 | lea foo@GOTOFF(%reg), %reg | |
2515 | with the local symbol, foo. */ | |
2516 | ||
2517 | static bfd_boolean | |
2518 | elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec, | |
2519 | struct bfd_link_info *link_info) | |
2520 | { | |
2521 | Elf_Internal_Shdr *symtab_hdr; | |
2522 | Elf_Internal_Rela *internal_relocs; | |
2523 | Elf_Internal_Rela *irel, *irelend; | |
2524 | bfd_byte *contents; | |
2525 | struct elf_i386_link_hash_table *htab; | |
2526 | bfd_boolean changed_contents; | |
2527 | bfd_boolean changed_relocs; | |
2528 | bfd_signed_vma *local_got_refcounts; | |
2529 | ||
2530 | /* Don't even try to convert non-ELF outputs. */ | |
2531 | if (!is_elf_hash_table (link_info->hash)) | |
2532 | return FALSE; | |
2533 | ||
fbdc86d9 | 2534 | /* Nothing to do if there are no codes, no relocations or no output. */ |
daa67607 | 2535 | if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC) |
fbdc86d9 L |
2536 | || sec->reloc_count == 0 |
2537 | || discarded_section (sec)) | |
daa67607 L |
2538 | return TRUE; |
2539 | ||
2540 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2541 | ||
2542 | /* Load the relocations for this section. */ | |
2543 | internal_relocs = (_bfd_elf_link_read_relocs | |
2544 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, | |
2545 | link_info->keep_memory)); | |
2546 | if (internal_relocs == NULL) | |
2547 | return FALSE; | |
2548 | ||
2549 | htab = elf_i386_hash_table (link_info); | |
2550 | changed_contents = FALSE; | |
2551 | changed_relocs = FALSE; | |
2552 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
2553 | ||
2554 | /* Get the section contents. */ | |
2555 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2556 | contents = elf_section_data (sec)->this_hdr.contents; | |
2557 | else | |
2558 | { | |
2559 | if (!bfd_malloc_and_get_section (abfd, sec, &contents)) | |
2560 | goto error_return; | |
2561 | } | |
2562 | ||
2563 | irelend = internal_relocs + sec->reloc_count; | |
2564 | for (irel = internal_relocs; irel < irelend; irel++) | |
2565 | { | |
2566 | unsigned int r_type = ELF32_R_TYPE (irel->r_info); | |
2567 | unsigned int r_symndx = ELF32_R_SYM (irel->r_info); | |
2568 | unsigned int indx; | |
2569 | struct elf_link_hash_entry *h; | |
2570 | ||
2571 | if (r_type != R_386_GOT32) | |
2572 | continue; | |
2573 | ||
2574 | /* Get the symbol referred to by the reloc. */ | |
2575 | if (r_symndx < symtab_hdr->sh_info) | |
2576 | { | |
2577 | Elf_Internal_Sym *isym; | |
2578 | ||
2579 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
2580 | abfd, r_symndx); | |
2581 | ||
2582 | /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */ | |
2583 | if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC | |
2584 | && bfd_get_8 (input_bfd, | |
2585 | contents + irel->r_offset - 2) == 0x8b) | |
2586 | { | |
2587 | bfd_put_8 (output_bfd, 0x8d, | |
2588 | contents + irel->r_offset - 2); | |
2589 | irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF); | |
2590 | if (local_got_refcounts != NULL | |
2591 | && local_got_refcounts[r_symndx] > 0) | |
2592 | local_got_refcounts[r_symndx] -= 1; | |
2593 | changed_contents = TRUE; | |
2594 | changed_relocs = TRUE; | |
2595 | } | |
2596 | continue; | |
2597 | } | |
2598 | ||
2599 | indx = r_symndx - symtab_hdr->sh_info; | |
2600 | h = elf_sym_hashes (abfd)[indx]; | |
2601 | BFD_ASSERT (h != NULL); | |
2602 | ||
2603 | while (h->root.type == bfd_link_hash_indirect | |
2604 | || h->root.type == bfd_link_hash_warning) | |
2605 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2606 | ||
3f65f599 L |
2607 | /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid |
2608 | optimizing _DYNAMIC since ld.so may use its link-time address. */ | |
daa67607 L |
2609 | if (h->def_regular |
2610 | && h->type != STT_GNU_IFUNC | |
9637f6ef | 2611 | && h != htab->elf.hdynamic |
daa67607 L |
2612 | && SYMBOL_REFERENCES_LOCAL (link_info, h) |
2613 | && bfd_get_8 (input_bfd, | |
2614 | contents + irel->r_offset - 2) == 0x8b) | |
2615 | { | |
2616 | bfd_put_8 (output_bfd, 0x8d, | |
2617 | contents + irel->r_offset - 2); | |
2618 | irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF); | |
2619 | if (h->got.refcount > 0) | |
2620 | h->got.refcount -= 1; | |
2621 | changed_contents = TRUE; | |
2622 | changed_relocs = TRUE; | |
2623 | } | |
2624 | } | |
2625 | ||
2626 | if (contents != NULL | |
2627 | && elf_section_data (sec)->this_hdr.contents != contents) | |
2628 | { | |
2629 | if (!changed_contents && !link_info->keep_memory) | |
2630 | free (contents); | |
2631 | else | |
2632 | { | |
2633 | /* Cache the section contents for elf_link_input_bfd. */ | |
2634 | elf_section_data (sec)->this_hdr.contents = contents; | |
2635 | } | |
2636 | } | |
2637 | ||
2638 | if (elf_section_data (sec)->relocs != internal_relocs) | |
2639 | { | |
2640 | if (!changed_relocs) | |
2641 | free (internal_relocs); | |
2642 | else | |
2643 | elf_section_data (sec)->relocs = internal_relocs; | |
2644 | } | |
2645 | ||
2646 | return TRUE; | |
2647 | ||
2648 | error_return: | |
2649 | if (contents != NULL | |
2650 | && elf_section_data (sec)->this_hdr.contents != contents) | |
2651 | free (contents); | |
2652 | if (internal_relocs != NULL | |
2653 | && elf_section_data (sec)->relocs != internal_relocs) | |
2654 | free (internal_relocs); | |
2655 | return FALSE; | |
2656 | } | |
2657 | ||
252b5132 RH |
2658 | /* Set the sizes of the dynamic sections. */ |
2659 | ||
b34976b6 | 2660 | static bfd_boolean |
23209a78 | 2661 | elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
252b5132 | 2662 | { |
6725bdbf | 2663 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
2664 | bfd *dynobj; |
2665 | asection *s; | |
b34976b6 | 2666 | bfd_boolean relocs; |
0c715baa | 2667 | bfd *ibfd; |
252b5132 | 2668 | |
6725bdbf | 2669 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
2670 | if (htab == NULL) |
2671 | return FALSE; | |
ebe50bae | 2672 | dynobj = htab->elf.dynobj; |
ffb2e45b AM |
2673 | if (dynobj == NULL) |
2674 | abort (); | |
252b5132 | 2675 | |
ebe50bae | 2676 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2677 | { |
2678 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 2679 | if (info->executable) |
252b5132 | 2680 | { |
3d4d4302 | 2681 | s = bfd_get_linker_section (dynobj, ".interp"); |
ffb2e45b AM |
2682 | if (s == NULL) |
2683 | abort (); | |
eea6121a | 2684 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
252b5132 RH |
2685 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2686 | } | |
161d71a6 | 2687 | } |
6725bdbf | 2688 | |
0c715baa AM |
2689 | /* Set up .got offsets for local syms, and space for local dynamic |
2690 | relocs. */ | |
2691 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
161d71a6 L |
2692 | { |
2693 | bfd_signed_vma *local_got; | |
2694 | bfd_signed_vma *end_local_got; | |
13ae64f3 | 2695 | char *local_tls_type; |
67a4f2b7 | 2696 | bfd_vma *local_tlsdesc_gotent; |
161d71a6 L |
2697 | bfd_size_type locsymcount; |
2698 | Elf_Internal_Shdr *symtab_hdr; | |
2699 | asection *srel; | |
6725bdbf | 2700 | |
0ffa91dd | 2701 | if (! is_i386_elf (ibfd)) |
161d71a6 | 2702 | continue; |
6725bdbf | 2703 | |
0c715baa AM |
2704 | for (s = ibfd->sections; s != NULL; s = s->next) |
2705 | { | |
e03a8ed8 | 2706 | struct elf_dyn_relocs *p; |
0c715baa | 2707 | |
daa67607 L |
2708 | if (!elf_i386_convert_mov_to_lea (ibfd, s, info)) |
2709 | return FALSE; | |
2710 | ||
e03a8ed8 | 2711 | for (p = ((struct elf_dyn_relocs *) |
e81d3500 | 2712 | elf_section_data (s)->local_dynrel); |
ec338859 AM |
2713 | p != NULL; |
2714 | p = p->next) | |
0c715baa | 2715 | { |
ec338859 AM |
2716 | if (!bfd_is_abs_section (p->sec) |
2717 | && bfd_is_abs_section (p->sec->output_section)) | |
2718 | { | |
2719 | /* Input section has been discarded, either because | |
2720 | it is a copy of a linkonce section or due to | |
2721 | linker script /DISCARD/, so we'll be discarding | |
2722 | the relocs too. */ | |
2723 | } | |
23209a78 | 2724 | else if (get_elf_i386_backend_data (output_bfd)->is_vxworks |
3348747a NS |
2725 | && strcmp (p->sec->output_section->name, |
2726 | ".tls_vars") == 0) | |
2727 | { | |
2728 | /* Relocations in vxworks .tls_vars sections are | |
2729 | handled specially by the loader. */ | |
2730 | } | |
248866a8 | 2731 | else if (p->count != 0) |
ec338859 AM |
2732 | { |
2733 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 2734 | srel->size += p->count * sizeof (Elf32_External_Rel); |
4b819e1f L |
2735 | if ((p->sec->output_section->flags & SEC_READONLY) != 0 |
2736 | && (info->flags & DF_TEXTREL) == 0) | |
b70321a2 L |
2737 | { |
2738 | info->flags |= DF_TEXTREL; | |
2739 | if (info->warn_shared_textrel && info->shared) | |
2740 | info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"), | |
2741 | p->sec->owner, p->sec); | |
b70321a2 | 2742 | } |
ec338859 | 2743 | } |
0c715baa AM |
2744 | } |
2745 | } | |
2746 | ||
2747 | local_got = elf_local_got_refcounts (ibfd); | |
161d71a6 L |
2748 | if (!local_got) |
2749 | continue; | |
6725bdbf | 2750 | |
0ffa91dd | 2751 | symtab_hdr = &elf_symtab_hdr (ibfd); |
161d71a6 L |
2752 | locsymcount = symtab_hdr->sh_info; |
2753 | end_local_got = local_got + locsymcount; | |
13ae64f3 | 2754 | local_tls_type = elf_i386_local_got_tls_type (ibfd); |
67a4f2b7 | 2755 | local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd); |
6de2ae4a L |
2756 | s = htab->elf.sgot; |
2757 | srel = htab->elf.srelgot; | |
67a4f2b7 AO |
2758 | for (; local_got < end_local_got; |
2759 | ++local_got, ++local_tls_type, ++local_tlsdesc_gotent) | |
161d71a6 | 2760 | { |
67a4f2b7 | 2761 | *local_tlsdesc_gotent = (bfd_vma) -1; |
161d71a6 | 2762 | if (*local_got > 0) |
6725bdbf | 2763 | { |
67a4f2b7 AO |
2764 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
2765 | { | |
6de2ae4a | 2766 | *local_tlsdesc_gotent = htab->elf.sgotplt->size |
67a4f2b7 | 2767 | - elf_i386_compute_jump_table_size (htab); |
6de2ae4a | 2768 | htab->elf.sgotplt->size += 8; |
67a4f2b7 AO |
2769 | *local_got = (bfd_vma) -2; |
2770 | } | |
2771 | if (! GOT_TLS_GDESC_P (*local_tls_type) | |
2772 | || GOT_TLS_GD_P (*local_tls_type)) | |
2773 | { | |
2774 | *local_got = s->size; | |
2775 | s->size += 4; | |
2776 | if (GOT_TLS_GD_P (*local_tls_type) | |
2777 | || *local_tls_type == GOT_TLS_IE_BOTH) | |
2778 | s->size += 4; | |
2779 | } | |
13ae64f3 | 2780 | if (info->shared |
67a4f2b7 | 2781 | || GOT_TLS_GD_ANY_P (*local_tls_type) |
37e55690 JJ |
2782 | || (*local_tls_type & GOT_TLS_IE)) |
2783 | { | |
2784 | if (*local_tls_type == GOT_TLS_IE_BOTH) | |
eea6121a | 2785 | srel->size += 2 * sizeof (Elf32_External_Rel); |
67a4f2b7 AO |
2786 | else if (GOT_TLS_GD_P (*local_tls_type) |
2787 | || ! GOT_TLS_GDESC_P (*local_tls_type)) | |
eea6121a | 2788 | srel->size += sizeof (Elf32_External_Rel); |
67a4f2b7 | 2789 | if (GOT_TLS_GDESC_P (*local_tls_type)) |
6de2ae4a | 2790 | htab->elf.srelplt->size += sizeof (Elf32_External_Rel); |
37e55690 | 2791 | } |
6725bdbf | 2792 | } |
161d71a6 L |
2793 | else |
2794 | *local_got = (bfd_vma) -1; | |
6725bdbf | 2795 | } |
252b5132 | 2796 | } |
6725bdbf | 2797 | |
13ae64f3 JJ |
2798 | if (htab->tls_ldm_got.refcount > 0) |
2799 | { | |
2800 | /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM | |
2801 | relocs. */ | |
6de2ae4a L |
2802 | htab->tls_ldm_got.offset = htab->elf.sgot->size; |
2803 | htab->elf.sgot->size += 8; | |
2804 | htab->elf.srelgot->size += sizeof (Elf32_External_Rel); | |
13ae64f3 JJ |
2805 | } |
2806 | else | |
2807 | htab->tls_ldm_got.offset = -1; | |
2808 | ||
0c715baa AM |
2809 | /* Allocate global sym .plt and .got entries, and space for global |
2810 | sym dynamic relocs. */ | |
eb4ff4d6 | 2811 | elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info); |
252b5132 | 2812 | |
c25bc9fc L |
2813 | /* Allocate .plt and .got entries, and space for local symbols. */ |
2814 | htab_traverse (htab->loc_hash_table, | |
2815 | elf_i386_allocate_local_dynrelocs, | |
2816 | info); | |
2817 | ||
67a4f2b7 AO |
2818 | /* For every jump slot reserved in the sgotplt, reloc_count is |
2819 | incremented. However, when we reserve space for TLS descriptors, | |
2820 | it's not incremented, so in order to compute the space reserved | |
2821 | for them, it suffices to multiply the reloc count by the jump | |
e1f98742 | 2822 | slot size. |
caa0075c | 2823 | |
e1f98742 L |
2824 | PR ld/13302: We start next_irelative_index at the end of .rela.plt |
2825 | so that R_386_IRELATIVE entries come last. */ | |
6de2ae4a | 2826 | if (htab->elf.srelplt) |
e1f98742 L |
2827 | { |
2828 | htab->next_tls_desc_index = htab->elf.srelplt->reloc_count; | |
2829 | htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4; | |
2830 | htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1; | |
2831 | } | |
2832 | else if (htab->elf.irelplt) | |
2833 | htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1; | |
2834 | ||
67a4f2b7 | 2835 | |
a7b16ceb L |
2836 | if (htab->elf.sgotplt) |
2837 | { | |
2838 | /* Don't allocate .got.plt section if there are no GOT nor PLT | |
9a2a56cc | 2839 | entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */ |
9d4b2dba L |
2840 | if ((htab->elf.hgot == NULL |
2841 | || !htab->elf.hgot->ref_regular_nonweak) | |
e28df02b L |
2842 | && (htab->elf.sgotplt->size |
2843 | == get_elf_backend_data (output_bfd)->got_header_size) | |
a7b16ceb L |
2844 | && (htab->elf.splt == NULL |
2845 | || htab->elf.splt->size == 0) | |
2846 | && (htab->elf.sgot == NULL | |
2847 | || htab->elf.sgot->size == 0) | |
2848 | && (htab->elf.iplt == NULL | |
2849 | || htab->elf.iplt->size == 0) | |
2850 | && (htab->elf.igotplt == NULL | |
2851 | || htab->elf.igotplt->size == 0)) | |
2852 | htab->elf.sgotplt->size = 0; | |
2853 | } | |
2854 | ||
9a2a56cc AM |
2855 | |
2856 | if (htab->plt_eh_frame != NULL | |
2857 | && htab->elf.splt != NULL | |
2858 | && htab->elf.splt->size != 0 | |
2859 | && !bfd_is_abs_section (htab->elf.splt->output_section) | |
2860 | && _bfd_elf_eh_frame_present (info)) | |
2861 | htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt); | |
2862 | ||
5a15f56f AM |
2863 | /* We now have determined the sizes of the various dynamic sections. |
2864 | Allocate memory for them. */ | |
b34976b6 | 2865 | relocs = FALSE; |
252b5132 RH |
2866 | for (s = dynobj->sections; s != NULL; s = s->next) |
2867 | { | |
eac338cf PB |
2868 | bfd_boolean strip_section = TRUE; |
2869 | ||
252b5132 RH |
2870 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
2871 | continue; | |
2872 | ||
6de2ae4a | 2873 | if (s == htab->elf.splt |
9a2a56cc | 2874 | || s == htab->elf.sgot) |
252b5132 | 2875 | { |
6725bdbf AM |
2876 | /* Strip this section if we don't need it; see the |
2877 | comment below. */ | |
eac338cf PB |
2878 | /* We'd like to strip these sections if they aren't needed, but if |
2879 | we've exported dynamic symbols from them we must leave them. | |
2880 | It's too late to tell BFD to get rid of the symbols. */ | |
2881 | ||
7325306f | 2882 | if (htab->elf.hplt != NULL) |
eac338cf | 2883 | strip_section = FALSE; |
252b5132 | 2884 | } |
9a2a56cc AM |
2885 | else if (s == htab->elf.sgotplt |
2886 | || s == htab->elf.iplt | |
2887 | || s == htab->elf.igotplt | |
2888 | || s == htab->plt_eh_frame | |
2889 | || s == htab->sdynbss) | |
2890 | { | |
2891 | /* Strip these too. */ | |
2892 | } | |
0112cd26 | 2893 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel")) |
252b5132 | 2894 | { |
6de2ae4a L |
2895 | if (s->size != 0 |
2896 | && s != htab->elf.srelplt | |
2897 | && s != htab->srelplt2) | |
b34976b6 | 2898 | relocs = TRUE; |
252b5132 | 2899 | |
0ac8d2ca AM |
2900 | /* We use the reloc_count field as a counter if we need |
2901 | to copy relocs into the output file. */ | |
5ae0bfb6 | 2902 | s->reloc_count = 0; |
252b5132 | 2903 | } |
6725bdbf | 2904 | else |
252b5132 RH |
2905 | { |
2906 | /* It's not one of our sections, so don't allocate space. */ | |
2907 | continue; | |
2908 | } | |
2909 | ||
c456f082 | 2910 | if (s->size == 0) |
252b5132 | 2911 | { |
0ac8d2ca AM |
2912 | /* If we don't need this section, strip it from the |
2913 | output file. This is mostly to handle .rel.bss and | |
2914 | .rel.plt. We must create both sections in | |
2915 | create_dynamic_sections, because they must be created | |
2916 | before the linker maps input sections to output | |
2917 | sections. The linker does that before | |
2918 | adjust_dynamic_symbol is called, and it is that | |
2919 | function which decides whether anything needs to go | |
2920 | into these sections. */ | |
c456f082 AM |
2921 | if (strip_section) |
2922 | s->flags |= SEC_EXCLUDE; | |
252b5132 RH |
2923 | continue; |
2924 | } | |
2925 | ||
c456f082 AM |
2926 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2927 | continue; | |
2928 | ||
f69da49f AM |
2929 | /* Allocate memory for the section contents. We use bfd_zalloc |
2930 | here in case unused entries are not reclaimed before the | |
2931 | section's contents are written out. This should not happen, | |
2932 | but this way if it does, we get a R_386_NONE reloc instead | |
2933 | of garbage. */ | |
a50b1753 | 2934 | s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size); |
6725bdbf | 2935 | if (s->contents == NULL) |
b34976b6 | 2936 | return FALSE; |
252b5132 RH |
2937 | } |
2938 | ||
e41b3a13 | 2939 | if (htab->plt_eh_frame != NULL |
9a2a56cc AM |
2940 | && htab->plt_eh_frame->contents != NULL) |
2941 | { | |
2942 | memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt, | |
2943 | sizeof (elf_i386_eh_frame_plt)); | |
2944 | bfd_put_32 (dynobj, htab->elf.splt->size, | |
2945 | htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET); | |
2946 | } | |
e41b3a13 | 2947 | |
ebe50bae | 2948 | if (htab->elf.dynamic_sections_created) |
252b5132 RH |
2949 | { |
2950 | /* Add some entries to the .dynamic section. We fill in the | |
2951 | values later, in elf_i386_finish_dynamic_sections, but we | |
2952 | must add the entries now so that we get the correct size for | |
2953 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2954 | dynamic linker and used by the debugger. */ | |
dc810e39 | 2955 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 2956 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 2957 | |
36af4a4e | 2958 | if (info->executable) |
252b5132 | 2959 | { |
dc810e39 | 2960 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 2961 | return FALSE; |
252b5132 RH |
2962 | } |
2963 | ||
6de2ae4a | 2964 | if (htab->elf.splt->size != 0) |
252b5132 | 2965 | { |
dc810e39 AM |
2966 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
2967 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
2968 | || !add_dynamic_entry (DT_PLTREL, DT_REL) | |
2969 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
b34976b6 | 2970 | return FALSE; |
252b5132 RH |
2971 | } |
2972 | ||
2973 | if (relocs) | |
2974 | { | |
dc810e39 AM |
2975 | if (!add_dynamic_entry (DT_REL, 0) |
2976 | || !add_dynamic_entry (DT_RELSZ, 0) | |
2977 | || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) | |
b34976b6 | 2978 | return FALSE; |
252b5132 | 2979 | |
0c715baa AM |
2980 | /* If any dynamic relocs apply to a read-only section, |
2981 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 2982 | if ((info->flags & DF_TEXTREL) == 0) |
eb4ff4d6 L |
2983 | elf_link_hash_traverse (&htab->elf, |
2984 | elf_i386_readonly_dynrelocs, info); | |
0c715baa AM |
2985 | |
2986 | if ((info->flags & DF_TEXTREL) != 0) | |
2987 | { | |
2988 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
b34976b6 | 2989 | return FALSE; |
0c715baa | 2990 | } |
252b5132 | 2991 | } |
23209a78 | 2992 | if (get_elf_i386_backend_data (output_bfd)->is_vxworks |
7a2b07ff NS |
2993 | && !elf_vxworks_add_dynamic_entries (output_bfd, info)) |
2994 | return FALSE; | |
252b5132 | 2995 | } |
dc810e39 | 2996 | #undef add_dynamic_entry |
252b5132 | 2997 | |
b34976b6 | 2998 | return TRUE; |
252b5132 RH |
2999 | } |
3000 | ||
67a4f2b7 AO |
3001 | static bfd_boolean |
3002 | elf_i386_always_size_sections (bfd *output_bfd, | |
3003 | struct bfd_link_info *info) | |
3004 | { | |
3005 | asection *tls_sec = elf_hash_table (info)->tls_sec; | |
3006 | ||
3007 | if (tls_sec) | |
3008 | { | |
3009 | struct elf_link_hash_entry *tlsbase; | |
3010 | ||
3011 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
3012 | "_TLS_MODULE_BASE_", | |
3013 | FALSE, FALSE, FALSE); | |
3014 | ||
3015 | if (tlsbase && tlsbase->type == STT_TLS) | |
3016 | { | |
4dfe6ac6 | 3017 | struct elf_i386_link_hash_table *htab; |
67a4f2b7 AO |
3018 | struct bfd_link_hash_entry *bh = NULL; |
3019 | const struct elf_backend_data *bed | |
3020 | = get_elf_backend_data (output_bfd); | |
3021 | ||
4dfe6ac6 NC |
3022 | htab = elf_i386_hash_table (info); |
3023 | if (htab == NULL) | |
3024 | return FALSE; | |
3025 | ||
67a4f2b7 AO |
3026 | if (!(_bfd_generic_link_add_one_symbol |
3027 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
3028 | tls_sec, 0, NULL, FALSE, | |
3029 | bed->collect, &bh))) | |
3030 | return FALSE; | |
9f03412a | 3031 | |
4dfe6ac6 | 3032 | htab->tls_module_base = bh; |
9f03412a | 3033 | |
67a4f2b7 AO |
3034 | tlsbase = (struct elf_link_hash_entry *)bh; |
3035 | tlsbase->def_regular = 1; | |
3036 | tlsbase->other = STV_HIDDEN; | |
3037 | (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE); | |
3038 | } | |
3039 | } | |
3040 | ||
3041 | return TRUE; | |
3042 | } | |
3043 | ||
38701953 AM |
3044 | /* Set the correct type for an x86 ELF section. We do this by the |
3045 | section name, which is a hack, but ought to work. */ | |
3046 | ||
b34976b6 | 3047 | static bfd_boolean |
55fd94b0 AM |
3048 | elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, |
3049 | Elf_Internal_Shdr *hdr, | |
3050 | asection *sec) | |
38701953 | 3051 | { |
91d6fa6a | 3052 | const char *name; |
38701953 AM |
3053 | |
3054 | name = bfd_get_section_name (abfd, sec); | |
3055 | ||
3056 | /* This is an ugly, but unfortunately necessary hack that is | |
3057 | needed when producing EFI binaries on x86. It tells | |
3058 | elf.c:elf_fake_sections() not to consider ".reloc" as a section | |
3059 | containing ELF relocation info. We need this hack in order to | |
3060 | be able to generate ELF binaries that can be translated into | |
3061 | EFI applications (which are essentially COFF objects). Those | |
3062 | files contain a COFF ".reloc" section inside an ELFNN object, | |
3063 | which would normally cause BFD to segfault because it would | |
3064 | attempt to interpret this section as containing relocation | |
3065 | entries for section "oc". With this hack enabled, ".reloc" | |
3066 | will be treated as a normal data section, which will avoid the | |
3067 | segfault. However, you won't be able to create an ELFNN binary | |
3068 | with a section named "oc" that needs relocations, but that's | |
3069 | the kind of ugly side-effects you get when detecting section | |
3070 | types based on their names... In practice, this limitation is | |
3071 | unlikely to bite. */ | |
3072 | if (strcmp (name, ".reloc") == 0) | |
3073 | hdr->sh_type = SHT_PROGBITS; | |
3074 | ||
b34976b6 | 3075 | return TRUE; |
38701953 AM |
3076 | } |
3077 | ||
9f03412a AO |
3078 | /* _TLS_MODULE_BASE_ needs to be treated especially when linking |
3079 | executables. Rather than setting it to the beginning of the TLS | |
3080 | section, we have to set it to the end. This function may be called | |
3081 | multiple times, it is idempotent. */ | |
3082 | ||
3083 | static void | |
eb4ff4d6 | 3084 | elf_i386_set_tls_module_base (struct bfd_link_info *info) |
9f03412a | 3085 | { |
4dfe6ac6 | 3086 | struct elf_i386_link_hash_table *htab; |
9f03412a AO |
3087 | struct bfd_link_hash_entry *base; |
3088 | ||
3089 | if (!info->executable) | |
3090 | return; | |
3091 | ||
4dfe6ac6 NC |
3092 | htab = elf_i386_hash_table (info); |
3093 | if (htab == NULL) | |
3094 | return; | |
9f03412a | 3095 | |
4dfe6ac6 NC |
3096 | base = htab->tls_module_base; |
3097 | if (base == NULL) | |
9f03412a AO |
3098 | return; |
3099 | ||
4dfe6ac6 | 3100 | base->u.def.value = htab->elf.tls_size; |
9f03412a AO |
3101 | } |
3102 | ||
13ae64f3 JJ |
3103 | /* Return the base VMA address which should be subtracted from real addresses |
3104 | when resolving @dtpoff relocation. | |
3105 | This is PT_TLS segment p_vaddr. */ | |
3106 | ||
3107 | static bfd_vma | |
eb4ff4d6 | 3108 | elf_i386_dtpoff_base (struct bfd_link_info *info) |
13ae64f3 | 3109 | { |
e1918d23 AM |
3110 | /* If tls_sec is NULL, we should have signalled an error already. */ |
3111 | if (elf_hash_table (info)->tls_sec == NULL) | |
6a30718d | 3112 | return 0; |
e1918d23 | 3113 | return elf_hash_table (info)->tls_sec->vma; |
13ae64f3 JJ |
3114 | } |
3115 | ||
3116 | /* Return the relocation value for @tpoff relocation | |
3117 | if STT_TLS virtual address is ADDRESS. */ | |
3118 | ||
3119 | static bfd_vma | |
eb4ff4d6 | 3120 | elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address) |
13ae64f3 | 3121 | { |
e1918d23 | 3122 | struct elf_link_hash_table *htab = elf_hash_table (info); |
7dc98aea RO |
3123 | const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd); |
3124 | bfd_vma static_tls_size; | |
13ae64f3 | 3125 | |
e1918d23 AM |
3126 | /* If tls_sec is NULL, we should have signalled an error already. */ |
3127 | if (htab->tls_sec == NULL) | |
6a30718d | 3128 | return 0; |
7dc98aea RO |
3129 | |
3130 | /* Consider special static TLS alignment requirements. */ | |
3131 | static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment); | |
3132 | return static_tls_size + htab->tls_sec->vma - address; | |
13ae64f3 JJ |
3133 | } |
3134 | ||
252b5132 RH |
3135 | /* Relocate an i386 ELF section. */ |
3136 | ||
b34976b6 | 3137 | static bfd_boolean |
55fd94b0 AM |
3138 | elf_i386_relocate_section (bfd *output_bfd, |
3139 | struct bfd_link_info *info, | |
3140 | bfd *input_bfd, | |
3141 | asection *input_section, | |
3142 | bfd_byte *contents, | |
3143 | Elf_Internal_Rela *relocs, | |
3144 | Elf_Internal_Sym *local_syms, | |
3145 | asection **local_sections) | |
252b5132 | 3146 | { |
6725bdbf | 3147 | struct elf_i386_link_hash_table *htab; |
252b5132 RH |
3148 | Elf_Internal_Shdr *symtab_hdr; |
3149 | struct elf_link_hash_entry **sym_hashes; | |
3150 | bfd_vma *local_got_offsets; | |
67a4f2b7 | 3151 | bfd_vma *local_tlsdesc_gotents; |
252b5132 RH |
3152 | Elf_Internal_Rela *rel; |
3153 | Elf_Internal_Rela *relend; | |
3348747a | 3154 | bfd_boolean is_vxworks_tls; |
25e762b9 | 3155 | unsigned plt_entry_size; |
252b5132 | 3156 | |
0ffa91dd | 3157 | BFD_ASSERT (is_i386_elf (input_bfd)); |
6bbec505 | 3158 | |
6725bdbf | 3159 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
3160 | if (htab == NULL) |
3161 | return FALSE; | |
0ffa91dd | 3162 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
252b5132 RH |
3163 | sym_hashes = elf_sym_hashes (input_bfd); |
3164 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
67a4f2b7 | 3165 | local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd); |
3348747a NS |
3166 | /* We have to handle relocations in vxworks .tls_vars sections |
3167 | specially, because the dynamic loader is 'weird'. */ | |
23209a78 RM |
3168 | is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks |
3169 | && info->shared | |
3348747a NS |
3170 | && !strcmp (input_section->output_section->name, |
3171 | ".tls_vars")); | |
252b5132 | 3172 | |
eb4ff4d6 | 3173 | elf_i386_set_tls_module_base (info); |
9f03412a | 3174 | |
25e762b9 RM |
3175 | plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd); |
3176 | ||
252b5132 RH |
3177 | rel = relocs; |
3178 | relend = relocs + input_section->reloc_count; | |
3179 | for (; rel < relend; rel++) | |
3180 | { | |
13ae64f3 | 3181 | unsigned int r_type; |
252b5132 RH |
3182 | reloc_howto_type *howto; |
3183 | unsigned long r_symndx; | |
3184 | struct elf_link_hash_entry *h; | |
3185 | Elf_Internal_Sym *sym; | |
3186 | asection *sec; | |
67a4f2b7 | 3187 | bfd_vma off, offplt; |
252b5132 | 3188 | bfd_vma relocation; |
b34976b6 | 3189 | bfd_boolean unresolved_reloc; |
252b5132 | 3190 | bfd_reloc_status_type r; |
1b452ec6 | 3191 | unsigned int indx; |
13ae64f3 | 3192 | int tls_type; |
1788fc08 | 3193 | bfd_vma st_size; |
252b5132 RH |
3194 | |
3195 | r_type = ELF32_R_TYPE (rel->r_info); | |
55fd94b0 AM |
3196 | if (r_type == R_386_GNU_VTINHERIT |
3197 | || r_type == R_386_GNU_VTENTRY) | |
252b5132 | 3198 | continue; |
dc47f327 | 3199 | |
55fd94b0 | 3200 | if ((indx = r_type) >= R_386_standard |
13ae64f3 JJ |
3201 | && ((indx = r_type - R_386_ext_offset) - R_386_standard |
3202 | >= R_386_ext - R_386_standard) | |
3203 | && ((indx = r_type - R_386_tls_offset) - R_386_ext | |
cbe950e9 | 3204 | >= R_386_irelative - R_386_ext)) |
252b5132 | 3205 | { |
6ba842b6 | 3206 | (*_bfd_error_handler) |
d003868e AM |
3207 | (_("%B: unrecognized relocation (0x%x) in section `%A'"), |
3208 | input_bfd, input_section, r_type); | |
252b5132 | 3209 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 3210 | return FALSE; |
252b5132 | 3211 | } |
1b452ec6 | 3212 | howto = elf_howto_table + indx; |
252b5132 RH |
3213 | |
3214 | r_symndx = ELF32_R_SYM (rel->r_info); | |
252b5132 RH |
3215 | h = NULL; |
3216 | sym = NULL; | |
3217 | sec = NULL; | |
b34976b6 | 3218 | unresolved_reloc = FALSE; |
252b5132 RH |
3219 | if (r_symndx < symtab_hdr->sh_info) |
3220 | { | |
3221 | sym = local_syms + r_symndx; | |
3222 | sec = local_sections[r_symndx]; | |
3223 | relocation = (sec->output_section->vma | |
3224 | + sec->output_offset | |
3225 | + sym->st_value); | |
1788fc08 | 3226 | st_size = sym->st_size; |
ab96bf03 AM |
3227 | |
3228 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
3229 | && ((sec->flags & SEC_MERGE) != 0 | |
3230 | || (info->relocatable | |
3231 | && sec->output_offset != 0))) | |
f8df10f4 | 3232 | { |
f8df10f4 | 3233 | bfd_vma addend; |
4a335f3d | 3234 | bfd_byte *where = contents + rel->r_offset; |
f8df10f4 | 3235 | |
4a335f3d | 3236 | switch (howto->size) |
f8df10f4 | 3237 | { |
4a335f3d AM |
3238 | case 0: |
3239 | addend = bfd_get_8 (input_bfd, where); | |
3240 | if (howto->pc_relative) | |
3241 | { | |
3242 | addend = (addend ^ 0x80) - 0x80; | |
3243 | addend += 1; | |
3244 | } | |
3245 | break; | |
3246 | case 1: | |
3247 | addend = bfd_get_16 (input_bfd, where); | |
3248 | if (howto->pc_relative) | |
3249 | { | |
3250 | addend = (addend ^ 0x8000) - 0x8000; | |
3251 | addend += 2; | |
3252 | } | |
3253 | break; | |
3254 | case 2: | |
3255 | addend = bfd_get_32 (input_bfd, where); | |
3256 | if (howto->pc_relative) | |
3257 | { | |
3258 | addend = (addend ^ 0x80000000) - 0x80000000; | |
3259 | addend += 4; | |
3260 | } | |
3261 | break; | |
3262 | default: | |
3263 | abort (); | |
f8df10f4 JJ |
3264 | } |
3265 | ||
ab96bf03 AM |
3266 | if (info->relocatable) |
3267 | addend += sec->output_offset; | |
3268 | else | |
3269 | { | |
3270 | asection *msec = sec; | |
3271 | addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, | |
3272 | addend); | |
3273 | addend -= relocation; | |
3274 | addend += msec->output_section->vma + msec->output_offset; | |
3275 | } | |
4a335f3d AM |
3276 | |
3277 | switch (howto->size) | |
3278 | { | |
3279 | case 0: | |
16a10388 | 3280 | /* FIXME: overflow checks. */ |
4a335f3d AM |
3281 | if (howto->pc_relative) |
3282 | addend -= 1; | |
3283 | bfd_put_8 (input_bfd, addend, where); | |
4a335f3d AM |
3284 | break; |
3285 | case 1: | |
3286 | if (howto->pc_relative) | |
3287 | addend -= 2; | |
3288 | bfd_put_16 (input_bfd, addend, where); | |
4a335f3d AM |
3289 | break; |
3290 | case 2: | |
3291 | if (howto->pc_relative) | |
3292 | addend -= 4; | |
3293 | bfd_put_32 (input_bfd, addend, where); | |
3294 | break; | |
3295 | } | |
f8df10f4 | 3296 | } |
1f85278f L |
3297 | else if (!info->relocatable |
3298 | && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
c25bc9fc L |
3299 | { |
3300 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
9fff0c39 L |
3301 | h = elf_i386_get_local_sym_hash (htab, input_bfd, rel, |
3302 | FALSE); | |
c25bc9fc L |
3303 | if (h == NULL) |
3304 | abort (); | |
3305 | ||
23209a78 | 3306 | /* Set STT_GNU_IFUNC symbol value. */ |
c25bc9fc L |
3307 | h->root.u.def.value = sym->st_value; |
3308 | h->root.u.def.section = sec; | |
3309 | } | |
252b5132 RH |
3310 | } |
3311 | else | |
3312 | { | |
3d540e93 | 3313 | bfd_boolean warned ATTRIBUTE_UNUSED; |
62d887d4 | 3314 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
ffb2e45b | 3315 | |
b2a8e766 AM |
3316 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
3317 | r_symndx, symtab_hdr, sym_hashes, | |
3318 | h, sec, relocation, | |
62d887d4 | 3319 | unresolved_reloc, warned, ignored); |
1788fc08 | 3320 | st_size = h->size; |
252b5132 RH |
3321 | } |
3322 | ||
dbaa2011 | 3323 | if (sec != NULL && discarded_section (sec)) |
0672748a | 3324 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 3325 | rel, 1, relend, howto, 0, contents); |
9635fe29 | 3326 | |
ab96bf03 AM |
3327 | if (info->relocatable) |
3328 | continue; | |
3329 | ||
cbe950e9 L |
3330 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle |
3331 | it here if it is defined in a non-shared object. */ | |
3332 | if (h != NULL | |
3333 | && h->type == STT_GNU_IFUNC | |
3334 | && h->def_regular) | |
3335 | { | |
3336 | asection *plt, *gotplt, *base_got; | |
3337 | bfd_vma plt_index; | |
4c544807 | 3338 | const char *name; |
cbe950e9 L |
3339 | |
3340 | if ((input_section->flags & SEC_ALLOC) == 0 | |
3341 | || h->plt.offset == (bfd_vma) -1) | |
3342 | abort (); | |
3343 | ||
3344 | /* STT_GNU_IFUNC symbol must go through PLT. */ | |
6de2ae4a | 3345 | if (htab->elf.splt != NULL) |
cbe950e9 | 3346 | { |
6de2ae4a L |
3347 | plt = htab->elf.splt; |
3348 | gotplt = htab->elf.sgotplt; | |
cbe950e9 L |
3349 | } |
3350 | else | |
3351 | { | |
6de2ae4a L |
3352 | plt = htab->elf.iplt; |
3353 | gotplt = htab->elf.igotplt; | |
cbe950e9 L |
3354 | } |
3355 | ||
3356 | relocation = (plt->output_section->vma | |
3357 | + plt->output_offset + h->plt.offset); | |
3358 | ||
3359 | switch (r_type) | |
3360 | { | |
3361 | default: | |
4c544807 L |
3362 | if (h->root.root.string) |
3363 | name = h->root.root.string; | |
3364 | else | |
3365 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
3366 | NULL); | |
cbe950e9 L |
3367 | (*_bfd_error_handler) |
3368 | (_("%B: relocation %s against STT_GNU_IFUNC " | |
3369 | "symbol `%s' isn't handled by %s"), input_bfd, | |
3370 | elf_howto_table[r_type].name, | |
4c544807 | 3371 | name, __FUNCTION__); |
cbe950e9 L |
3372 | bfd_set_error (bfd_error_bad_value); |
3373 | return FALSE; | |
3374 | ||
3375 | case R_386_32: | |
710ab287 | 3376 | /* Generate dynamic relcoation only when there is a |
c293fa49 | 3377 | non-GOT reference in a shared object. */ |
710ab287 L |
3378 | if (info->shared && h->non_got_ref) |
3379 | { | |
3380 | Elf_Internal_Rela outrel; | |
710ab287 L |
3381 | asection *sreloc; |
3382 | bfd_vma offset; | |
3383 | ||
c25bc9fc L |
3384 | /* Need a dynamic relocation to get the real function |
3385 | adddress. */ | |
710ab287 L |
3386 | offset = _bfd_elf_section_offset (output_bfd, |
3387 | info, | |
3388 | input_section, | |
3389 | rel->r_offset); | |
3390 | if (offset == (bfd_vma) -1 | |
3391 | || offset == (bfd_vma) -2) | |
3392 | abort (); | |
3393 | ||
3394 | outrel.r_offset = (input_section->output_section->vma | |
3395 | + input_section->output_offset | |
3396 | + offset); | |
3397 | ||
3398 | if (h->dynindx == -1 | |
44c4ea11 L |
3399 | || h->forced_local |
3400 | || info->executable) | |
710ab287 L |
3401 | { |
3402 | /* This symbol is resolved locally. */ | |
56b8aada L |
3403 | outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE); |
3404 | bfd_put_32 (output_bfd, | |
3405 | (h->root.u.def.value | |
3406 | + h->root.u.def.section->output_section->vma | |
3407 | + h->root.u.def.section->output_offset), | |
3408 | contents + offset); | |
710ab287 L |
3409 | } |
3410 | else | |
56b8aada | 3411 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
710ab287 | 3412 | |
6de2ae4a | 3413 | sreloc = htab->elf.irelifunc; |
59d6ffb2 | 3414 | elf_append_rel (output_bfd, sreloc, &outrel); |
710ab287 L |
3415 | |
3416 | /* If this reloc is against an external symbol, we | |
3417 | do not want to fiddle with the addend. Otherwise, | |
3418 | we need to include the symbol value so that it | |
3419 | becomes an addend for the dynamic reloc. For an | |
3420 | internal symbol, we have updated addend. */ | |
56b8aada | 3421 | continue; |
710ab287 | 3422 | } |
d59a60e9 | 3423 | /* FALLTHROUGH */ |
cbe950e9 L |
3424 | case R_386_PC32: |
3425 | case R_386_PLT32: | |
3426 | goto do_relocation; | |
3427 | ||
3428 | case R_386_GOT32: | |
6de2ae4a | 3429 | base_got = htab->elf.sgot; |
cbe950e9 L |
3430 | off = h->got.offset; |
3431 | ||
7afd84dc | 3432 | if (base_got == NULL) |
cbe950e9 L |
3433 | abort (); |
3434 | ||
7afd84dc | 3435 | if (off == (bfd_vma) -1) |
cbe950e9 | 3436 | { |
7afd84dc L |
3437 | /* We can't use h->got.offset here to save state, or |
3438 | even just remember the offset, as finish_dynamic_symbol | |
3439 | would use that as offset into .got. */ | |
6bbec505 | 3440 | |
6de2ae4a | 3441 | if (htab->elf.splt != NULL) |
7afd84dc | 3442 | { |
25e762b9 | 3443 | plt_index = h->plt.offset / plt_entry_size - 1; |
7afd84dc | 3444 | off = (plt_index + 3) * 4; |
6de2ae4a | 3445 | base_got = htab->elf.sgotplt; |
7afd84dc | 3446 | } |
cbe950e9 L |
3447 | else |
3448 | { | |
25e762b9 | 3449 | plt_index = h->plt.offset / plt_entry_size; |
7afd84dc | 3450 | off = plt_index * 4; |
6de2ae4a | 3451 | base_got = htab->elf.igotplt; |
7afd84dc L |
3452 | } |
3453 | ||
3454 | if (h->dynindx == -1 | |
3455 | || h->forced_local | |
3456 | || info->symbolic) | |
3457 | { | |
3458 | /* This references the local defitionion. We must | |
3459 | initialize this entry in the global offset table. | |
3460 | Since the offset must always be a multiple of 8, | |
3461 | we use the least significant bit to record | |
3462 | whether we have initialized it already. | |
3463 | ||
3464 | When doing a dynamic link, we create a .rela.got | |
3465 | relocation entry to initialize the value. This | |
3466 | is done in the finish_dynamic_symbol routine. */ | |
3467 | if ((off & 1) != 0) | |
3468 | off &= ~1; | |
3469 | else | |
3470 | { | |
3471 | bfd_put_32 (output_bfd, relocation, | |
3472 | base_got->contents + off); | |
3473 | h->got.offset |= 1; | |
3474 | } | |
cbe950e9 | 3475 | } |
cbe950e9 | 3476 | |
7afd84dc | 3477 | relocation = off; |
cbe950e9 | 3478 | |
7afd84dc | 3479 | /* Adjust for static executables. */ |
6de2ae4a | 3480 | if (htab->elf.splt == NULL) |
7afd84dc L |
3481 | relocation += gotplt->output_offset; |
3482 | } | |
3483 | else | |
0018b0a3 L |
3484 | { |
3485 | relocation = (base_got->output_section->vma | |
3486 | + base_got->output_offset + off | |
3487 | - gotplt->output_section->vma | |
3488 | - gotplt->output_offset); | |
3489 | /* Adjust for static executables. */ | |
6de2ae4a | 3490 | if (htab->elf.splt == NULL) |
0018b0a3 L |
3491 | relocation += gotplt->output_offset; |
3492 | } | |
3493 | ||
cbe950e9 L |
3494 | goto do_relocation; |
3495 | ||
3496 | case R_386_GOTOFF: | |
3497 | relocation -= (gotplt->output_section->vma | |
3498 | + gotplt->output_offset); | |
3499 | goto do_relocation; | |
3500 | } | |
3501 | } | |
3502 | ||
252b5132 RH |
3503 | switch (r_type) |
3504 | { | |
3505 | case R_386_GOT32: | |
3506 | /* Relocation is to the entry for this symbol in the global | |
3507 | offset table. */ | |
6de2ae4a | 3508 | if (htab->elf.sgot == NULL) |
ffb2e45b | 3509 | abort (); |
252b5132 RH |
3510 | |
3511 | if (h != NULL) | |
3512 | { | |
b34976b6 | 3513 | bfd_boolean dyn; |
252b5132 RH |
3514 | |
3515 | off = h->got.offset; | |
ebe50bae | 3516 | dyn = htab->elf.dynamic_sections_created; |
26e41594 | 3517 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
252b5132 | 3518 | || (info->shared |
586119b3 | 3519 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
ef5aade5 L |
3520 | || (ELF_ST_VISIBILITY (h->other) |
3521 | && h->root.type == bfd_link_hash_undefweak)) | |
252b5132 RH |
3522 | { |
3523 | /* This is actually a static link, or it is a | |
3524 | -Bsymbolic link and the symbol is defined | |
3525 | locally, or the symbol was forced to be local | |
3526 | because of a version file. We must initialize | |
3527 | this entry in the global offset table. Since the | |
3528 | offset must always be a multiple of 4, we use the | |
3529 | least significant bit to record whether we have | |
3530 | initialized it already. | |
3531 | ||
3532 | When doing a dynamic link, we create a .rel.got | |
3533 | relocation entry to initialize the value. This | |
3534 | is done in the finish_dynamic_symbol routine. */ | |
3535 | if ((off & 1) != 0) | |
3536 | off &= ~1; | |
3537 | else | |
3538 | { | |
3539 | bfd_put_32 (output_bfd, relocation, | |
6de2ae4a | 3540 | htab->elf.sgot->contents + off); |
252b5132 RH |
3541 | h->got.offset |= 1; |
3542 | } | |
3543 | } | |
8c694914 | 3544 | else |
b34976b6 | 3545 | unresolved_reloc = FALSE; |
252b5132 RH |
3546 | } |
3547 | else | |
3548 | { | |
ffb2e45b AM |
3549 | if (local_got_offsets == NULL) |
3550 | abort (); | |
252b5132 RH |
3551 | |
3552 | off = local_got_offsets[r_symndx]; | |
3553 | ||
3554 | /* The offset must always be a multiple of 4. We use | |
83be169b AM |
3555 | the least significant bit to record whether we have |
3556 | already generated the necessary reloc. */ | |
252b5132 RH |
3557 | if ((off & 1) != 0) |
3558 | off &= ~1; | |
3559 | else | |
3560 | { | |
6725bdbf | 3561 | bfd_put_32 (output_bfd, relocation, |
6de2ae4a | 3562 | htab->elf.sgot->contents + off); |
252b5132 RH |
3563 | |
3564 | if (info->shared) | |
3565 | { | |
947216bf AM |
3566 | asection *s; |
3567 | Elf_Internal_Rela outrel; | |
252b5132 | 3568 | |
6de2ae4a | 3569 | s = htab->elf.srelgot; |
947216bf | 3570 | if (s == NULL) |
ffb2e45b | 3571 | abort (); |
252b5132 | 3572 | |
6de2ae4a L |
3573 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
3574 | + htab->elf.sgot->output_offset | |
252b5132 RH |
3575 | + off); |
3576 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
59d6ffb2 | 3577 | elf_append_rel (output_bfd, s, &outrel); |
252b5132 RH |
3578 | } |
3579 | ||
3580 | local_got_offsets[r_symndx] |= 1; | |
3581 | } | |
252b5132 RH |
3582 | } |
3583 | ||
ffb2e45b AM |
3584 | if (off >= (bfd_vma) -2) |
3585 | abort (); | |
3586 | ||
6de2ae4a L |
3587 | relocation = htab->elf.sgot->output_section->vma |
3588 | + htab->elf.sgot->output_offset + off | |
3589 | - htab->elf.sgotplt->output_section->vma | |
3590 | - htab->elf.sgotplt->output_offset; | |
252b5132 RH |
3591 | break; |
3592 | ||
3593 | case R_386_GOTOFF: | |
3594 | /* Relocation is relative to the start of the global offset | |
3595 | table. */ | |
3596 | ||
90f487df L |
3597 | /* Check to make sure it isn't a protected function symbol |
3598 | for shared library since it may not be local when used | |
41bed6dd L |
3599 | as function address. We also need to make sure that a |
3600 | symbol is defined locally. */ | |
3601 | if (info->shared && h) | |
90f487df | 3602 | { |
41bed6dd L |
3603 | if (!h->def_regular) |
3604 | { | |
3605 | const char *v; | |
3606 | ||
3607 | switch (ELF_ST_VISIBILITY (h->other)) | |
3608 | { | |
3609 | case STV_HIDDEN: | |
3610 | v = _("hidden symbol"); | |
3611 | break; | |
3612 | case STV_INTERNAL: | |
3613 | v = _("internal symbol"); | |
3614 | break; | |
3615 | case STV_PROTECTED: | |
3616 | v = _("protected symbol"); | |
3617 | break; | |
3618 | default: | |
3619 | v = _("symbol"); | |
3620 | break; | |
3621 | } | |
3622 | ||
3623 | (*_bfd_error_handler) | |
3624 | (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"), | |
3625 | input_bfd, v, h->root.root.string); | |
3626 | bfd_set_error (bfd_error_bad_value); | |
3627 | return FALSE; | |
3628 | } | |
3629 | else if (!info->executable | |
bdb892b9 | 3630 | && !SYMBOLIC_BIND (info, h) |
41bed6dd L |
3631 | && h->type == STT_FUNC |
3632 | && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) | |
3633 | { | |
3634 | (*_bfd_error_handler) | |
3635 | (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"), | |
3636 | input_bfd, h->root.root.string); | |
3637 | bfd_set_error (bfd_error_bad_value); | |
3638 | return FALSE; | |
3639 | } | |
90f487df L |
3640 | } |
3641 | ||
8c37241b JJ |
3642 | /* Note that sgot is not involved in this |
3643 | calculation. We always want the start of .got.plt. If we | |
3644 | defined _GLOBAL_OFFSET_TABLE_ in a different way, as is | |
252b5132 RH |
3645 | permitted by the ABI, we might have to change this |
3646 | calculation. */ | |
6de2ae4a L |
3647 | relocation -= htab->elf.sgotplt->output_section->vma |
3648 | + htab->elf.sgotplt->output_offset; | |
252b5132 RH |
3649 | break; |
3650 | ||
3651 | case R_386_GOTPC: | |
3652 | /* Use global offset table as symbol value. */ | |
6de2ae4a L |
3653 | relocation = htab->elf.sgotplt->output_section->vma |
3654 | + htab->elf.sgotplt->output_offset; | |
b34976b6 | 3655 | unresolved_reloc = FALSE; |
252b5132 RH |
3656 | break; |
3657 | ||
3658 | case R_386_PLT32: | |
3659 | /* Relocation is to the entry for this symbol in the | |
3660 | procedure linkage table. */ | |
3661 | ||
dd5724d5 | 3662 | /* Resolve a PLT32 reloc against a local symbol directly, |
83be169b | 3663 | without using the procedure linkage table. */ |
252b5132 RH |
3664 | if (h == NULL) |
3665 | break; | |
3666 | ||
dd5724d5 | 3667 | if (h->plt.offset == (bfd_vma) -1 |
6de2ae4a | 3668 | || htab->elf.splt == NULL) |
252b5132 RH |
3669 | { |
3670 | /* We didn't make a PLT entry for this symbol. This | |
83be169b AM |
3671 | happens when statically linking PIC code, or when |
3672 | using -Bsymbolic. */ | |
252b5132 RH |
3673 | break; |
3674 | } | |
3675 | ||
6de2ae4a L |
3676 | relocation = (htab->elf.splt->output_section->vma |
3677 | + htab->elf.splt->output_offset | |
252b5132 | 3678 | + h->plt.offset); |
b34976b6 | 3679 | unresolved_reloc = FALSE; |
252b5132 RH |
3680 | break; |
3681 | ||
1788fc08 | 3682 | case R_386_SIZE32: |
1788fc08 L |
3683 | /* Set to symbol size. */ |
3684 | relocation = st_size; | |
3685 | /* Fall through. */ | |
3686 | ||
252b5132 RH |
3687 | case R_386_32: |
3688 | case R_386_PC32: | |
3348747a NS |
3689 | if ((input_section->flags & SEC_ALLOC) == 0 |
3690 | || is_vxworks_tls) | |
ec338859 AM |
3691 | break; |
3692 | ||
12d0ee4a | 3693 | if ((info->shared |
ef5aade5 L |
3694 | && (h == NULL |
3695 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3696 | || h->root.type != bfd_link_hash_undefweak) | |
1788fc08 | 3697 | && ((r_type != R_386_PC32 && r_type != R_386_SIZE32) |
f6c52c13 | 3698 | || !SYMBOL_CALLS_LOCAL (info, h))) |
a23b6845 AM |
3699 | || (ELIMINATE_COPY_RELOCS |
3700 | && !info->shared | |
12d0ee4a AM |
3701 | && h != NULL |
3702 | && h->dynindx != -1 | |
f5385ebf AM |
3703 | && !h->non_got_ref |
3704 | && ((h->def_dynamic | |
3705 | && !h->def_regular) | |
28d0b90e | 3706 | || h->root.type == bfd_link_hash_undefweak |
0f88be7a | 3707 | || h->root.type == bfd_link_hash_undefined))) |
252b5132 | 3708 | { |
947216bf | 3709 | Elf_Internal_Rela outrel; |
b34976b6 | 3710 | bfd_boolean skip, relocate; |
0c715baa | 3711 | asection *sreloc; |
252b5132 RH |
3712 | |
3713 | /* When generating a shared object, these relocations | |
3714 | are copied into the output file to be resolved at run | |
3715 | time. */ | |
3716 | ||
b34976b6 AM |
3717 | skip = FALSE; |
3718 | relocate = FALSE; | |
252b5132 | 3719 | |
c629eae0 JJ |
3720 | outrel.r_offset = |
3721 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
3722 | rel->r_offset); | |
3723 | if (outrel.r_offset == (bfd_vma) -1) | |
b34976b6 | 3724 | skip = TRUE; |
0bb2d96a | 3725 | else if (outrel.r_offset == (bfd_vma) -2) |
b34976b6 | 3726 | skip = TRUE, relocate = TRUE; |
252b5132 RH |
3727 | outrel.r_offset += (input_section->output_section->vma |
3728 | + input_section->output_offset); | |
3729 | ||
3730 | if (skip) | |
0bb2d96a | 3731 | memset (&outrel, 0, sizeof outrel); |
5a15f56f AM |
3732 | else if (h != NULL |
3733 | && h->dynindx != -1 | |
3734 | && (r_type == R_386_PC32 | |
3735 | || !info->shared | |
55255dae | 3736 | || !SYMBOLIC_BIND (info, h) |
f5385ebf | 3737 | || !h->def_regular)) |
0bb2d96a | 3738 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
252b5132 RH |
3739 | else |
3740 | { | |
5a15f56f | 3741 | /* This symbol is local, or marked to become local. */ |
b34976b6 | 3742 | relocate = TRUE; |
5a15f56f | 3743 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
252b5132 RH |
3744 | } |
3745 | ||
cbe950e9 | 3746 | sreloc = elf_section_data (input_section)->sreloc; |
e7c33416 | 3747 | |
62d78908 L |
3748 | if (sreloc == NULL || sreloc->contents == NULL) |
3749 | { | |
3750 | r = bfd_reloc_notsupported; | |
3751 | goto check_relocation_error; | |
3752 | } | |
0c715baa | 3753 | |
59d6ffb2 | 3754 | elf_append_rel (output_bfd, sreloc, &outrel); |
252b5132 RH |
3755 | |
3756 | /* If this reloc is against an external symbol, we do | |
3757 | not want to fiddle with the addend. Otherwise, we | |
3758 | need to include the symbol value so that it becomes | |
3759 | an addend for the dynamic reloc. */ | |
0f88be7a | 3760 | if (! relocate) |
252b5132 RH |
3761 | continue; |
3762 | } | |
252b5132 RH |
3763 | break; |
3764 | ||
37e55690 | 3765 | case R_386_TLS_IE: |
1d85728f | 3766 | if (!info->executable) |
37e55690 | 3767 | { |
947216bf | 3768 | Elf_Internal_Rela outrel; |
37e55690 | 3769 | asection *sreloc; |
37e55690 JJ |
3770 | |
3771 | outrel.r_offset = rel->r_offset | |
3772 | + input_section->output_section->vma | |
3773 | + input_section->output_offset; | |
3774 | outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); | |
3775 | sreloc = elf_section_data (input_section)->sreloc; | |
3776 | if (sreloc == NULL) | |
3777 | abort (); | |
59d6ffb2 | 3778 | elf_append_rel (output_bfd, sreloc, &outrel); |
37e55690 JJ |
3779 | } |
3780 | /* Fall through */ | |
3781 | ||
13ae64f3 | 3782 | case R_386_TLS_GD: |
67a4f2b7 AO |
3783 | case R_386_TLS_GOTDESC: |
3784 | case R_386_TLS_DESC_CALL: | |
13ae64f3 | 3785 | case R_386_TLS_IE_32: |
37e55690 | 3786 | case R_386_TLS_GOTIE: |
13ae64f3 JJ |
3787 | tls_type = GOT_UNKNOWN; |
3788 | if (h == NULL && local_got_offsets) | |
3789 | tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx]; | |
3790 | else if (h != NULL) | |
142411ca | 3791 | tls_type = elf_i386_hash_entry(h)->tls_type; |
37e55690 JJ |
3792 | if (tls_type == GOT_TLS_IE) |
3793 | tls_type = GOT_TLS_IE_NEG; | |
142411ca L |
3794 | |
3795 | if (! elf_i386_tls_transition (info, input_bfd, | |
3796 | input_section, contents, | |
3797 | symtab_hdr, sym_hashes, | |
3798 | &r_type, tls_type, rel, | |
4c544807 | 3799 | relend, h, r_symndx)) |
142411ca | 3800 | return FALSE; |
13ae64f3 JJ |
3801 | |
3802 | if (r_type == R_386_TLS_LE_32) | |
3803 | { | |
82e51918 | 3804 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 JJ |
3805 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
3806 | { | |
142411ca | 3807 | unsigned int type; |
13ae64f3 JJ |
3808 | bfd_vma roff; |
3809 | ||
3810 | /* GD->LE transition. */ | |
13ae64f3 | 3811 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
3812 | if (type == 0x04) |
3813 | { | |
3814 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
3815 | Change it into: | |
3816 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
3817 | (6 byte form of subl). */ | |
13ae64f3 JJ |
3818 | memcpy (contents + rel->r_offset - 3, |
3819 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
142411ca | 3820 | roff = rel->r_offset + 5; |
13ae64f3 JJ |
3821 | } |
3822 | else | |
3823 | { | |
142411ca L |
3824 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop |
3825 | Change it into: | |
3826 | movl %gs:0, %eax; subl $foo@tpoff, %eax | |
3827 | (6 byte form of subl). */ | |
3828 | memcpy (contents + rel->r_offset - 2, | |
3829 | "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); | |
3830 | roff = rel->r_offset + 6; | |
13ae64f3 | 3831 | } |
eb4ff4d6 | 3832 | bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation), |
13ae64f3 | 3833 | contents + roff); |
a3fadc9a | 3834 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
3835 | rel++; |
3836 | continue; | |
3837 | } | |
67a4f2b7 AO |
3838 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
3839 | { | |
3840 | /* GDesc -> LE transition. | |
3841 | It's originally something like: | |
3842 | leal x@tlsdesc(%ebx), %eax | |
3843 | ||
3844 | leal x@ntpoff, %eax | |
3845 | ||
3846 | Registers other than %eax may be set up here. */ | |
3847 | ||
142411ca | 3848 | unsigned int val; |
67a4f2b7 AO |
3849 | bfd_vma roff; |
3850 | ||
67a4f2b7 | 3851 | roff = rel->r_offset; |
67a4f2b7 | 3852 | val = bfd_get_8 (input_bfd, contents + roff - 1); |
67a4f2b7 AO |
3853 | |
3854 | /* Now modify the instruction as appropriate. */ | |
3855 | /* aoliva FIXME: remove the above and xor the byte | |
3856 | below with 0x86. */ | |
3857 | bfd_put_8 (output_bfd, val ^ 0x86, | |
3858 | contents + roff - 1); | |
eb4ff4d6 | 3859 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
67a4f2b7 AO |
3860 | contents + roff); |
3861 | continue; | |
3862 | } | |
3863 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
3864 | { | |
3865 | /* GDesc -> LE transition. | |
3866 | It's originally: | |
3867 | call *(%eax) | |
3868 | Turn it into: | |
142411ca | 3869 | xchg %ax,%ax */ |
67a4f2b7 | 3870 | |
67a4f2b7 | 3871 | bfd_vma roff; |
6bbec505 | 3872 | |
67a4f2b7 | 3873 | roff = rel->r_offset; |
10efb593 | 3874 | bfd_put_8 (output_bfd, 0x66, contents + roff); |
67a4f2b7 AO |
3875 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
3876 | continue; | |
3877 | } | |
37e55690 | 3878 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE) |
13ae64f3 | 3879 | { |
142411ca | 3880 | unsigned int val; |
13ae64f3 JJ |
3881 | |
3882 | /* IE->LE transition: | |
37e55690 JJ |
3883 | Originally it can be one of: |
3884 | movl foo, %eax | |
3885 | movl foo, %reg | |
3886 | addl foo, %reg | |
3887 | We change it into: | |
3888 | movl $foo, %eax | |
3889 | movl $foo, %reg | |
3890 | addl $foo, %reg. */ | |
37e55690 | 3891 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
37e55690 JJ |
3892 | if (val == 0xa1) |
3893 | { | |
3894 | /* movl foo, %eax. */ | |
55fd94b0 AM |
3895 | bfd_put_8 (output_bfd, 0xb8, |
3896 | contents + rel->r_offset - 1); | |
37e55690 | 3897 | } |
299bf759 | 3898 | else |
37e55690 | 3899 | { |
142411ca L |
3900 | unsigned int type; |
3901 | ||
55fd94b0 AM |
3902 | type = bfd_get_8 (input_bfd, |
3903 | contents + rel->r_offset - 2); | |
299bf759 | 3904 | switch (type) |
26e41594 | 3905 | { |
299bf759 L |
3906 | case 0x8b: |
3907 | /* movl */ | |
299bf759 L |
3908 | bfd_put_8 (output_bfd, 0xc7, |
3909 | contents + rel->r_offset - 2); | |
3910 | bfd_put_8 (output_bfd, | |
3911 | 0xc0 | ((val >> 3) & 7), | |
3912 | contents + rel->r_offset - 1); | |
3913 | break; | |
3914 | case 0x03: | |
3915 | /* addl */ | |
299bf759 L |
3916 | bfd_put_8 (output_bfd, 0x81, |
3917 | contents + rel->r_offset - 2); | |
3918 | bfd_put_8 (output_bfd, | |
3919 | 0xc0 | ((val >> 3) & 7), | |
3920 | contents + rel->r_offset - 1); | |
3921 | break; | |
3922 | default: | |
3923 | BFD_FAIL (); | |
3924 | break; | |
26e41594 | 3925 | } |
37e55690 | 3926 | } |
eb4ff4d6 | 3927 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
37e55690 JJ |
3928 | contents + rel->r_offset); |
3929 | continue; | |
3930 | } | |
3931 | else | |
3932 | { | |
3933 | unsigned int val, type; | |
3934 | ||
3935 | /* {IE_32,GOTIE}->LE transition: | |
3936 | Originally it can be one of: | |
13ae64f3 | 3937 | subl foo(%reg1), %reg2 |
13ae64f3 | 3938 | movl foo(%reg1), %reg2 |
37e55690 | 3939 | addl foo(%reg1), %reg2 |
13ae64f3 JJ |
3940 | We change it into: |
3941 | subl $foo, %reg2 | |
37e55690 JJ |
3942 | movl $foo, %reg2 (6 byte form) |
3943 | addl $foo, %reg2. */ | |
13ae64f3 JJ |
3944 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
3945 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); | |
13ae64f3 JJ |
3946 | if (type == 0x8b) |
3947 | { | |
3948 | /* movl */ | |
13ae64f3 JJ |
3949 | bfd_put_8 (output_bfd, 0xc7, |
3950 | contents + rel->r_offset - 2); | |
3951 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3952 | contents + rel->r_offset - 1); | |
3953 | } | |
3954 | else if (type == 0x2b) | |
3955 | { | |
3956 | /* subl */ | |
13ae64f3 JJ |
3957 | bfd_put_8 (output_bfd, 0x81, |
3958 | contents + rel->r_offset - 2); | |
3959 | bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), | |
3960 | contents + rel->r_offset - 1); | |
3961 | } | |
37e55690 JJ |
3962 | else if (type == 0x03) |
3963 | { | |
3964 | /* addl */ | |
3965 | bfd_put_8 (output_bfd, 0x81, | |
3966 | contents + rel->r_offset - 2); | |
3967 | bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), | |
3968 | contents + rel->r_offset - 1); | |
3969 | } | |
13ae64f3 JJ |
3970 | else |
3971 | BFD_FAIL (); | |
37e55690 | 3972 | if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE) |
eb4ff4d6 | 3973 | bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation), |
37e55690 JJ |
3974 | contents + rel->r_offset); |
3975 | else | |
eb4ff4d6 | 3976 | bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation), |
37e55690 | 3977 | contents + rel->r_offset); |
13ae64f3 JJ |
3978 | continue; |
3979 | } | |
3980 | } | |
3981 | ||
6de2ae4a | 3982 | if (htab->elf.sgot == NULL) |
13ae64f3 JJ |
3983 | abort (); |
3984 | ||
3985 | if (h != NULL) | |
67a4f2b7 AO |
3986 | { |
3987 | off = h->got.offset; | |
3988 | offplt = elf_i386_hash_entry (h)->tlsdesc_got; | |
3989 | } | |
13ae64f3 JJ |
3990 | else |
3991 | { | |
3992 | if (local_got_offsets == NULL) | |
3993 | abort (); | |
3994 | ||
3995 | off = local_got_offsets[r_symndx]; | |
67a4f2b7 | 3996 | offplt = local_tlsdesc_gotents[r_symndx]; |
13ae64f3 JJ |
3997 | } |
3998 | ||
3999 | if ((off & 1) != 0) | |
4000 | off &= ~1; | |
26e41594 | 4001 | else |
13ae64f3 | 4002 | { |
947216bf | 4003 | Elf_Internal_Rela outrel; |
91d6fa6a | 4004 | int dr_type; |
67a4f2b7 | 4005 | asection *sreloc; |
13ae64f3 | 4006 | |
6de2ae4a | 4007 | if (htab->elf.srelgot == NULL) |
13ae64f3 JJ |
4008 | abort (); |
4009 | ||
67a4f2b7 AO |
4010 | indx = h && h->dynindx != -1 ? h->dynindx : 0; |
4011 | ||
4012 | if (GOT_TLS_GDESC_P (tls_type)) | |
4013 | { | |
59d6ffb2 | 4014 | bfd_byte *loc; |
67a4f2b7 AO |
4015 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC); |
4016 | BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8 | |
6de2ae4a L |
4017 | <= htab->elf.sgotplt->size); |
4018 | outrel.r_offset = (htab->elf.sgotplt->output_section->vma | |
4019 | + htab->elf.sgotplt->output_offset | |
67a4f2b7 AO |
4020 | + offplt |
4021 | + htab->sgotplt_jump_table_size); | |
6de2ae4a | 4022 | sreloc = htab->elf.srelplt; |
67a4f2b7 | 4023 | loc = sreloc->contents; |
5ae0bfb6 RS |
4024 | loc += (htab->next_tls_desc_index++ |
4025 | * sizeof (Elf32_External_Rel)); | |
67a4f2b7 | 4026 | BFD_ASSERT (loc + sizeof (Elf32_External_Rel) |
c3b02097 | 4027 | <= sreloc->contents + sreloc->size); |
67a4f2b7 AO |
4028 | bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); |
4029 | if (indx == 0) | |
4030 | { | |
4031 | BFD_ASSERT (! unresolved_reloc); | |
4032 | bfd_put_32 (output_bfd, | |
eb4ff4d6 | 4033 | relocation - elf_i386_dtpoff_base (info), |
6de2ae4a | 4034 | htab->elf.sgotplt->contents + offplt |
67a4f2b7 AO |
4035 | + htab->sgotplt_jump_table_size + 4); |
4036 | } | |
4037 | else | |
4038 | { | |
4039 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 4040 | htab->elf.sgotplt->contents + offplt |
67a4f2b7 AO |
4041 | + htab->sgotplt_jump_table_size + 4); |
4042 | } | |
4043 | } | |
4044 | ||
6de2ae4a | 4045 | sreloc = htab->elf.srelgot; |
67a4f2b7 | 4046 | |
6de2ae4a L |
4047 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
4048 | + htab->elf.sgot->output_offset + off); | |
13ae64f3 | 4049 | |
67a4f2b7 | 4050 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 | 4051 | dr_type = R_386_TLS_DTPMOD32; |
67a4f2b7 AO |
4052 | else if (GOT_TLS_GDESC_P (tls_type)) |
4053 | goto dr_done; | |
37e55690 JJ |
4054 | else if (tls_type == GOT_TLS_IE_POS) |
4055 | dr_type = R_386_TLS_TPOFF; | |
13ae64f3 JJ |
4056 | else |
4057 | dr_type = R_386_TLS_TPOFF32; | |
67a4f2b7 | 4058 | |
37e55690 | 4059 | if (dr_type == R_386_TLS_TPOFF && indx == 0) |
eb4ff4d6 L |
4060 | bfd_put_32 (output_bfd, |
4061 | relocation - elf_i386_dtpoff_base (info), | |
6de2ae4a | 4062 | htab->elf.sgot->contents + off); |
37e55690 | 4063 | else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) |
23209a78 | 4064 | bfd_put_32 (output_bfd, |
eb4ff4d6 | 4065 | elf_i386_dtpoff_base (info) - relocation, |
6de2ae4a | 4066 | htab->elf.sgot->contents + off); |
67a4f2b7 | 4067 | else if (dr_type != R_386_TLS_DESC) |
c366c25e | 4068 | bfd_put_32 (output_bfd, 0, |
6de2ae4a | 4069 | htab->elf.sgot->contents + off); |
13ae64f3 | 4070 | outrel.r_info = ELF32_R_INFO (indx, dr_type); |
67a4f2b7 | 4071 | |
59d6ffb2 | 4072 | elf_append_rel (output_bfd, sreloc, &outrel); |
13ae64f3 | 4073 | |
67a4f2b7 | 4074 | if (GOT_TLS_GD_P (tls_type)) |
13ae64f3 JJ |
4075 | { |
4076 | if (indx == 0) | |
4077 | { | |
82e51918 | 4078 | BFD_ASSERT (! unresolved_reloc); |
13ae64f3 | 4079 | bfd_put_32 (output_bfd, |
eb4ff4d6 | 4080 | relocation - elf_i386_dtpoff_base (info), |
6de2ae4a | 4081 | htab->elf.sgot->contents + off + 4); |
13ae64f3 JJ |
4082 | } |
4083 | else | |
4084 | { | |
4085 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 4086 | htab->elf.sgot->contents + off + 4); |
13ae64f3 JJ |
4087 | outrel.r_info = ELF32_R_INFO (indx, |
4088 | R_386_TLS_DTPOFF32); | |
4089 | outrel.r_offset += 4; | |
59d6ffb2 | 4090 | elf_append_rel (output_bfd, sreloc, &outrel); |
13ae64f3 JJ |
4091 | } |
4092 | } | |
37e55690 JJ |
4093 | else if (tls_type == GOT_TLS_IE_BOTH) |
4094 | { | |
4095 | bfd_put_32 (output_bfd, | |
eb4ff4d6 L |
4096 | (indx == 0 |
4097 | ? relocation - elf_i386_dtpoff_base (info) | |
4098 | : 0), | |
6de2ae4a | 4099 | htab->elf.sgot->contents + off + 4); |
37e55690 JJ |
4100 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); |
4101 | outrel.r_offset += 4; | |
59d6ffb2 | 4102 | elf_append_rel (output_bfd, sreloc, &outrel); |
37e55690 | 4103 | } |
13ae64f3 | 4104 | |
67a4f2b7 | 4105 | dr_done: |
13ae64f3 JJ |
4106 | if (h != NULL) |
4107 | h->got.offset |= 1; | |
4108 | else | |
4109 | local_got_offsets[r_symndx] |= 1; | |
4110 | } | |
4111 | ||
67a4f2b7 AO |
4112 | if (off >= (bfd_vma) -2 |
4113 | && ! GOT_TLS_GDESC_P (tls_type)) | |
13ae64f3 | 4114 | abort (); |
67a4f2b7 AO |
4115 | if (r_type == R_386_TLS_GOTDESC |
4116 | || r_type == R_386_TLS_DESC_CALL) | |
4117 | { | |
4118 | relocation = htab->sgotplt_jump_table_size + offplt; | |
4119 | unresolved_reloc = FALSE; | |
4120 | } | |
4121 | else if (r_type == ELF32_R_TYPE (rel->r_info)) | |
13ae64f3 | 4122 | { |
6de2ae4a L |
4123 | bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma |
4124 | + htab->elf.sgotplt->output_offset; | |
4125 | relocation = htab->elf.sgot->output_section->vma | |
4126 | + htab->elf.sgot->output_offset + off - g_o_t; | |
37e55690 JJ |
4127 | if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) |
4128 | && tls_type == GOT_TLS_IE_BOTH) | |
4129 | relocation += 4; | |
4130 | if (r_type == R_386_TLS_IE) | |
8c37241b | 4131 | relocation += g_o_t; |
b34976b6 | 4132 | unresolved_reloc = FALSE; |
13ae64f3 | 4133 | } |
67a4f2b7 | 4134 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) |
13ae64f3 JJ |
4135 | { |
4136 | unsigned int val, type; | |
4137 | bfd_vma roff; | |
4138 | ||
4139 | /* GD->IE transition. */ | |
13ae64f3 | 4140 | type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); |
13ae64f3 JJ |
4141 | val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); |
4142 | if (type == 0x04) | |
4143 | { | |
4144 | /* leal foo(,%reg,1), %eax; call ___tls_get_addr | |
4145 | Change it into: | |
4146 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 | 4147 | val >>= 3; |
142411ca | 4148 | roff = rel->r_offset - 3; |
13ae64f3 JJ |
4149 | } |
4150 | else | |
4151 | { | |
4152 | /* leal foo(%reg), %eax; call ___tls_get_addr; nop | |
4153 | Change it into: | |
4154 | movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ | |
13ae64f3 JJ |
4155 | roff = rel->r_offset - 2; |
4156 | } | |
4157 | memcpy (contents + roff, | |
4158 | "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); | |
4159 | contents[roff + 7] = 0x80 | (val & 7); | |
37e55690 JJ |
4160 | /* If foo is used only with foo@gotntpoff(%reg) and |
4161 | foo@indntpoff, but not with foo@gottpoff(%reg), change | |
4162 | subl $foo@gottpoff(%reg), %eax | |
4163 | into: | |
4164 | addl $foo@gotntpoff(%reg), %eax. */ | |
ebcfb3c0 JJ |
4165 | if (tls_type == GOT_TLS_IE_POS) |
4166 | contents[roff + 6] = 0x03; | |
8c37241b | 4167 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4168 | htab->elf.sgot->output_section->vma |
4169 | + htab->elf.sgot->output_offset + off | |
4170 | - htab->elf.sgotplt->output_section->vma | |
4171 | - htab->elf.sgotplt->output_offset, | |
13ae64f3 JJ |
4172 | contents + roff + 8); |
4173 | /* Skip R_386_PLT32. */ | |
4174 | rel++; | |
4175 | continue; | |
4176 | } | |
67a4f2b7 AO |
4177 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC) |
4178 | { | |
4179 | /* GDesc -> IE transition. | |
4180 | It's originally something like: | |
4181 | leal x@tlsdesc(%ebx), %eax | |
4182 | ||
4183 | Change it to: | |
142411ca | 4184 | movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax |
67a4f2b7 AO |
4185 | or: |
4186 | movl x@gottpoff(%ebx), %eax # before negl %eax | |
4187 | ||
4188 | Registers other than %eax may be set up here. */ | |
4189 | ||
67a4f2b7 AO |
4190 | bfd_vma roff; |
4191 | ||
4192 | /* First, make sure it's a leal adding ebx to a 32-bit | |
4193 | offset into any register, although it's probably | |
4194 | almost always going to be eax. */ | |
4195 | roff = rel->r_offset; | |
67a4f2b7 AO |
4196 | |
4197 | /* Now modify the instruction as appropriate. */ | |
4198 | /* To turn a leal into a movl in the form we use it, it | |
4199 | suffices to change the first byte from 0x8d to 0x8b. | |
4200 | aoliva FIXME: should we decide to keep the leal, all | |
4201 | we have to do is remove the statement below, and | |
4202 | adjust the relaxation of R_386_TLS_DESC_CALL. */ | |
4203 | bfd_put_8 (output_bfd, 0x8b, contents + roff - 2); | |
4204 | ||
4205 | if (tls_type == GOT_TLS_IE_BOTH) | |
4206 | off += 4; | |
4207 | ||
4208 | bfd_put_32 (output_bfd, | |
6de2ae4a L |
4209 | htab->elf.sgot->output_section->vma |
4210 | + htab->elf.sgot->output_offset + off | |
4211 | - htab->elf.sgotplt->output_section->vma | |
4212 | - htab->elf.sgotplt->output_offset, | |
67a4f2b7 AO |
4213 | contents + roff); |
4214 | continue; | |
4215 | } | |
4216 | else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL) | |
4217 | { | |
4218 | /* GDesc -> IE transition. | |
4219 | It's originally: | |
4220 | call *(%eax) | |
4221 | ||
4222 | Change it to: | |
142411ca | 4223 | xchg %ax,%ax |
67a4f2b7 AO |
4224 | or |
4225 | negl %eax | |
4226 | depending on how we transformed the TLS_GOTDESC above. | |
4227 | */ | |
4228 | ||
67a4f2b7 AO |
4229 | bfd_vma roff; |
4230 | ||
67a4f2b7 | 4231 | roff = rel->r_offset; |
67a4f2b7 AO |
4232 | |
4233 | /* Now modify the instruction as appropriate. */ | |
4234 | if (tls_type != GOT_TLS_IE_NEG) | |
4235 | { | |
10efb593 L |
4236 | /* xchg %ax,%ax */ |
4237 | bfd_put_8 (output_bfd, 0x66, contents + roff); | |
67a4f2b7 AO |
4238 | bfd_put_8 (output_bfd, 0x90, contents + roff + 1); |
4239 | } | |
4240 | else | |
4241 | { | |
4242 | /* negl %eax */ | |
4243 | bfd_put_8 (output_bfd, 0xf7, contents + roff); | |
4244 | bfd_put_8 (output_bfd, 0xd8, contents + roff + 1); | |
4245 | } | |
4246 | ||
4247 | continue; | |
4248 | } | |
4249 | else | |
4250 | BFD_ASSERT (FALSE); | |
13ae64f3 JJ |
4251 | break; |
4252 | ||
4253 | case R_386_TLS_LDM: | |
142411ca L |
4254 | if (! elf_i386_tls_transition (info, input_bfd, |
4255 | input_section, contents, | |
4256 | symtab_hdr, sym_hashes, | |
4257 | &r_type, GOT_UNKNOWN, rel, | |
4c544807 | 4258 | relend, h, r_symndx)) |
142411ca | 4259 | return FALSE; |
13ae64f3 | 4260 | |
142411ca L |
4261 | if (r_type != R_386_TLS_LDM) |
4262 | { | |
13ae64f3 | 4263 | /* LD->LE transition: |
13ae64f3 JJ |
4264 | leal foo(%reg), %eax; call ___tls_get_addr. |
4265 | We change it into: | |
4266 | movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */ | |
142411ca | 4267 | BFD_ASSERT (r_type == R_386_TLS_LE_32); |
13ae64f3 JJ |
4268 | memcpy (contents + rel->r_offset - 2, |
4269 | "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); | |
a3fadc9a | 4270 | /* Skip R_386_PC32/R_386_PLT32. */ |
13ae64f3 JJ |
4271 | rel++; |
4272 | continue; | |
4273 | } | |
4274 | ||
6de2ae4a | 4275 | if (htab->elf.sgot == NULL) |
13ae64f3 JJ |
4276 | abort (); |
4277 | ||
4278 | off = htab->tls_ldm_got.offset; | |
4279 | if (off & 1) | |
4280 | off &= ~1; | |
4281 | else | |
4282 | { | |
947216bf | 4283 | Elf_Internal_Rela outrel; |
13ae64f3 | 4284 | |
6de2ae4a | 4285 | if (htab->elf.srelgot == NULL) |
13ae64f3 JJ |
4286 | abort (); |
4287 | ||
6de2ae4a L |
4288 | outrel.r_offset = (htab->elf.sgot->output_section->vma |
4289 | + htab->elf.sgot->output_offset + off); | |
13ae64f3 JJ |
4290 | |
4291 | bfd_put_32 (output_bfd, 0, | |
6de2ae4a | 4292 | htab->elf.sgot->contents + off); |
13ae64f3 | 4293 | bfd_put_32 (output_bfd, 0, |
6de2ae4a | 4294 | htab->elf.sgot->contents + off + 4); |
13ae64f3 | 4295 | outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); |
59d6ffb2 | 4296 | elf_append_rel (output_bfd, htab->elf.srelgot, &outrel); |
13ae64f3 JJ |
4297 | htab->tls_ldm_got.offset |= 1; |
4298 | } | |
6de2ae4a L |
4299 | relocation = htab->elf.sgot->output_section->vma |
4300 | + htab->elf.sgot->output_offset + off | |
4301 | - htab->elf.sgotplt->output_section->vma | |
4302 | - htab->elf.sgotplt->output_offset; | |
b34976b6 | 4303 | unresolved_reloc = FALSE; |
13ae64f3 JJ |
4304 | break; |
4305 | ||
4306 | case R_386_TLS_LDO_32: | |
959b0961 | 4307 | if (!info->executable || (input_section->flags & SEC_CODE) == 0) |
eb4ff4d6 | 4308 | relocation -= elf_i386_dtpoff_base (info); |
13ae64f3 JJ |
4309 | else |
4310 | /* When converting LDO to LE, we must negate. */ | |
eb4ff4d6 | 4311 | relocation = -elf_i386_tpoff (info, relocation); |
13ae64f3 JJ |
4312 | break; |
4313 | ||
4314 | case R_386_TLS_LE_32: | |
13ae64f3 | 4315 | case R_386_TLS_LE: |
1d85728f | 4316 | if (!info->executable) |
37e55690 | 4317 | { |
947216bf | 4318 | Elf_Internal_Rela outrel; |
37e55690 | 4319 | asection *sreloc; |
37e55690 JJ |
4320 | |
4321 | outrel.r_offset = rel->r_offset | |
4322 | + input_section->output_section->vma | |
4323 | + input_section->output_offset; | |
4324 | if (h != NULL && h->dynindx != -1) | |
4325 | indx = h->dynindx; | |
4326 | else | |
4327 | indx = 0; | |
4328 | if (r_type == R_386_TLS_LE_32) | |
4329 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); | |
4330 | else | |
4331 | outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); | |
4332 | sreloc = elf_section_data (input_section)->sreloc; | |
4333 | if (sreloc == NULL) | |
4334 | abort (); | |
59d6ffb2 | 4335 | elf_append_rel (output_bfd, sreloc, &outrel); |
37e55690 JJ |
4336 | if (indx) |
4337 | continue; | |
4338 | else if (r_type == R_386_TLS_LE_32) | |
eb4ff4d6 | 4339 | relocation = elf_i386_dtpoff_base (info) - relocation; |
37e55690 | 4340 | else |
eb4ff4d6 | 4341 | relocation -= elf_i386_dtpoff_base (info); |
37e55690 JJ |
4342 | } |
4343 | else if (r_type == R_386_TLS_LE_32) | |
eb4ff4d6 | 4344 | relocation = elf_i386_tpoff (info, relocation); |
37e55690 | 4345 | else |
eb4ff4d6 | 4346 | relocation = -elf_i386_tpoff (info, relocation); |
13ae64f3 JJ |
4347 | break; |
4348 | ||
252b5132 RH |
4349 | default: |
4350 | break; | |
4351 | } | |
4352 | ||
239e1f3a AM |
4353 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
4354 | because such sections are not SEC_ALLOC and thus ld.so will | |
4355 | not process them. */ | |
8c694914 | 4356 | if (unresolved_reloc |
239e1f3a | 4357 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
4358 | && h->def_dynamic) |
4359 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
4360 | rel->r_offset) != (bfd_vma) -1) | |
6a30718d JJ |
4361 | { |
4362 | (*_bfd_error_handler) | |
843fe662 | 4363 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
d003868e AM |
4364 | input_bfd, |
4365 | input_section, | |
6a30718d | 4366 | (long) rel->r_offset, |
843fe662 | 4367 | howto->name, |
6a30718d | 4368 | h->root.root.string); |
b34976b6 | 4369 | return FALSE; |
6a30718d | 4370 | } |
83be169b | 4371 | |
cbe950e9 | 4372 | do_relocation: |
252b5132 RH |
4373 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
4374 | contents, rel->r_offset, | |
55fd94b0 | 4375 | relocation, 0); |
252b5132 | 4376 | |
62d78908 | 4377 | check_relocation_error: |
cf5c0c5b | 4378 | if (r != bfd_reloc_ok) |
252b5132 | 4379 | { |
cf5c0c5b | 4380 | const char *name; |
ffb2e45b | 4381 | |
cf5c0c5b AM |
4382 | if (h != NULL) |
4383 | name = h->root.root.string; | |
4384 | else | |
4385 | { | |
4386 | name = bfd_elf_string_from_elf_section (input_bfd, | |
4387 | symtab_hdr->sh_link, | |
4388 | sym->st_name); | |
4389 | if (name == NULL) | |
b34976b6 | 4390 | return FALSE; |
cf5c0c5b AM |
4391 | if (*name == '\0') |
4392 | name = bfd_section_name (input_bfd, sec); | |
4393 | } | |
ffb2e45b | 4394 | |
cf5c0c5b AM |
4395 | if (r == bfd_reloc_overflow) |
4396 | { | |
cf5c0c5b | 4397 | if (! ((*info->callbacks->reloc_overflow) |
dfeffb9f L |
4398 | (info, (h ? &h->root : NULL), name, howto->name, |
4399 | (bfd_vma) 0, input_bfd, input_section, | |
4400 | rel->r_offset))) | |
b34976b6 | 4401 | return FALSE; |
cf5c0c5b AM |
4402 | } |
4403 | else | |
4404 | { | |
4405 | (*_bfd_error_handler) | |
d003868e AM |
4406 | (_("%B(%A+0x%lx): reloc against `%s': error %d"), |
4407 | input_bfd, input_section, | |
cf5c0c5b | 4408 | (long) rel->r_offset, name, (int) r); |
b34976b6 | 4409 | return FALSE; |
cf5c0c5b | 4410 | } |
252b5132 RH |
4411 | } |
4412 | } | |
4413 | ||
b34976b6 | 4414 | return TRUE; |
252b5132 RH |
4415 | } |
4416 | ||
4417 | /* Finish up dynamic symbol handling. We set the contents of various | |
4418 | dynamic sections here. */ | |
4419 | ||
b34976b6 | 4420 | static bfd_boolean |
55fd94b0 AM |
4421 | elf_i386_finish_dynamic_symbol (bfd *output_bfd, |
4422 | struct bfd_link_info *info, | |
4423 | struct elf_link_hash_entry *h, | |
4424 | Elf_Internal_Sym *sym) | |
252b5132 | 4425 | { |
6725bdbf | 4426 | struct elf_i386_link_hash_table *htab; |
25e762b9 RM |
4427 | unsigned plt_entry_size; |
4428 | const struct elf_i386_backend_data *abed; | |
252b5132 | 4429 | |
6725bdbf | 4430 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
4431 | if (htab == NULL) |
4432 | return FALSE; | |
252b5132 | 4433 | |
25e762b9 RM |
4434 | abed = get_elf_i386_backend_data (output_bfd); |
4435 | plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd); | |
4436 | ||
252b5132 RH |
4437 | if (h->plt.offset != (bfd_vma) -1) |
4438 | { | |
252b5132 RH |
4439 | bfd_vma plt_index; |
4440 | bfd_vma got_offset; | |
947216bf AM |
4441 | Elf_Internal_Rela rel; |
4442 | bfd_byte *loc; | |
cbe950e9 L |
4443 | asection *plt, *gotplt, *relplt; |
4444 | ||
4445 | /* When building a static executable, use .iplt, .igot.plt and | |
4446 | .rel.iplt sections for STT_GNU_IFUNC symbols. */ | |
6de2ae4a | 4447 | if (htab->elf.splt != NULL) |
cbe950e9 | 4448 | { |
6de2ae4a L |
4449 | plt = htab->elf.splt; |
4450 | gotplt = htab->elf.sgotplt; | |
4451 | relplt = htab->elf.srelplt; | |
cbe950e9 L |
4452 | } |
4453 | else | |
4454 | { | |
6de2ae4a L |
4455 | plt = htab->elf.iplt; |
4456 | gotplt = htab->elf.igotplt; | |
4457 | relplt = htab->elf.irelplt; | |
cbe950e9 | 4458 | } |
252b5132 RH |
4459 | |
4460 | /* This symbol has an entry in the procedure linkage table. Set | |
4461 | it up. */ | |
4462 | ||
cbe950e9 L |
4463 | if ((h->dynindx == -1 |
4464 | && !((h->forced_local || info->executable) | |
4465 | && h->def_regular | |
4466 | && h->type == STT_GNU_IFUNC)) | |
4467 | || plt == NULL | |
4468 | || gotplt == NULL | |
4469 | || relplt == NULL) | |
cec7f46a | 4470 | abort (); |
252b5132 RH |
4471 | |
4472 | /* Get the index in the procedure linkage table which | |
4473 | corresponds to this symbol. This is the index of this symbol | |
4474 | in all the symbols for which we are making plt entries. The | |
cbe950e9 | 4475 | first entry in the procedure linkage table is reserved. |
252b5132 | 4476 | |
cbe950e9 | 4477 | Get the offset into the .got table of the entry that |
252b5132 | 4478 | corresponds to this function. Each .got entry is 4 bytes. |
cbe950e9 | 4479 | The first three are reserved. |
6bbec505 | 4480 | |
cbe950e9 L |
4481 | For static executables, we don't reserve anything. */ |
4482 | ||
6de2ae4a | 4483 | if (plt == htab->elf.splt) |
cbe950e9 | 4484 | { |
e1f98742 L |
4485 | got_offset = h->plt.offset / plt_entry_size - 1; |
4486 | got_offset = (got_offset + 3) * 4; | |
cbe950e9 L |
4487 | } |
4488 | else | |
4489 | { | |
e1f98742 L |
4490 | got_offset = h->plt.offset / plt_entry_size; |
4491 | got_offset = got_offset * 4; | |
cbe950e9 | 4492 | } |
252b5132 RH |
4493 | |
4494 | /* Fill in the entry in the procedure linkage table. */ | |
4495 | if (! info->shared) | |
4496 | { | |
25e762b9 RM |
4497 | memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry, |
4498 | abed->plt->plt_entry_size); | |
252b5132 | 4499 | bfd_put_32 (output_bfd, |
cbe950e9 L |
4500 | (gotplt->output_section->vma |
4501 | + gotplt->output_offset | |
252b5132 | 4502 | + got_offset), |
25e762b9 RM |
4503 | plt->contents + h->plt.offset |
4504 | + abed->plt->plt_got_offset); | |
eac338cf | 4505 | |
25e762b9 | 4506 | if (abed->is_vxworks) |
eac338cf PB |
4507 | { |
4508 | int s, k, reloc_index; | |
4509 | ||
4510 | /* Create the R_386_32 relocation referencing the GOT | |
4511 | for this PLT entry. */ | |
4512 | ||
4513 | /* S: Current slot number (zero-based). */ | |
25e762b9 RM |
4514 | s = ((h->plt.offset - abed->plt->plt_entry_size) |
4515 | / abed->plt->plt_entry_size); | |
eac338cf PB |
4516 | /* K: Number of relocations for PLTResolve. */ |
4517 | if (info->shared) | |
4518 | k = PLTRESOLVE_RELOCS_SHLIB; | |
4519 | else | |
4520 | k = PLTRESOLVE_RELOCS; | |
4521 | /* Skip the PLTresolve relocations, and the relocations for | |
4522 | the other PLT slots. */ | |
4523 | reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS; | |
4524 | loc = (htab->srelplt2->contents + reloc_index | |
4525 | * sizeof (Elf32_External_Rel)); | |
4526 | ||
6de2ae4a L |
4527 | rel.r_offset = (htab->elf.splt->output_section->vma |
4528 | + htab->elf.splt->output_offset | |
eac338cf | 4529 | + h->plt.offset + 2), |
7325306f | 4530 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4531 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
4532 | ||
4533 | /* Create the R_386_32 relocation referencing the beginning of | |
4534 | the PLT for this GOT entry. */ | |
6de2ae4a L |
4535 | rel.r_offset = (htab->elf.sgotplt->output_section->vma |
4536 | + htab->elf.sgotplt->output_offset | |
eac338cf | 4537 | + got_offset); |
7325306f | 4538 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf | 4539 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
13ca3149 | 4540 | loc + sizeof (Elf32_External_Rel)); |
eac338cf | 4541 | } |
252b5132 RH |
4542 | } |
4543 | else | |
4544 | { | |
25e762b9 RM |
4545 | memcpy (plt->contents + h->plt.offset, abed->plt->pic_plt_entry, |
4546 | abed->plt->plt_entry_size); | |
252b5132 | 4547 | bfd_put_32 (output_bfd, got_offset, |
25e762b9 RM |
4548 | plt->contents + h->plt.offset |
4549 | + abed->plt->plt_got_offset); | |
252b5132 RH |
4550 | } |
4551 | ||
252b5132 RH |
4552 | /* Fill in the entry in the global offset table. */ |
4553 | bfd_put_32 (output_bfd, | |
cbe950e9 L |
4554 | (plt->output_section->vma |
4555 | + plt->output_offset | |
252b5132 | 4556 | + h->plt.offset |
25e762b9 | 4557 | + abed->plt->plt_lazy_offset), |
cbe950e9 | 4558 | gotplt->contents + got_offset); |
252b5132 RH |
4559 | |
4560 | /* Fill in the entry in the .rel.plt section. */ | |
cbe950e9 L |
4561 | rel.r_offset = (gotplt->output_section->vma |
4562 | + gotplt->output_offset | |
252b5132 | 4563 | + got_offset); |
cbe950e9 L |
4564 | if (h->dynindx == -1 |
4565 | || ((info->executable | |
4566 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
4567 | && h->def_regular | |
4568 | && h->type == STT_GNU_IFUNC)) | |
4569 | { | |
4570 | /* If an STT_GNU_IFUNC symbol is locally defined, generate | |
4571 | R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend | |
4572 | in the .got.plt section. */ | |
4573 | bfd_put_32 (output_bfd, | |
23209a78 | 4574 | (h->root.u.def.value |
cbe950e9 L |
4575 | + h->root.u.def.section->output_section->vma |
4576 | + h->root.u.def.section->output_offset), | |
4577 | gotplt->contents + got_offset); | |
4578 | rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE); | |
e1f98742 L |
4579 | /* R_386_IRELATIVE comes last. */ |
4580 | plt_index = htab->next_irelative_index--; | |
cbe950e9 L |
4581 | } |
4582 | else | |
e1f98742 L |
4583 | { |
4584 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); | |
4585 | plt_index = htab->next_jump_slot_index++; | |
4586 | } | |
cbe950e9 | 4587 | loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel); |
0ac8d2ca | 4588 | bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); |
252b5132 | 4589 | |
e1f98742 L |
4590 | /* Don't fill PLT entry for static executables. */ |
4591 | if (plt == htab->elf.splt) | |
4592 | { | |
4593 | bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel), | |
4594 | plt->contents + h->plt.offset | |
4595 | + abed->plt->plt_reloc_offset); | |
4596 | bfd_put_32 (output_bfd, - (h->plt.offset | |
4597 | + abed->plt->plt_plt_offset + 4), | |
4598 | plt->contents + h->plt.offset | |
4599 | + abed->plt->plt_plt_offset); | |
4600 | } | |
4601 | ||
f5385ebf | 4602 | if (!h->def_regular) |
252b5132 RH |
4603 | { |
4604 | /* Mark the symbol as undefined, rather than as defined in | |
c6585bbb JJ |
4605 | the .plt section. Leave the value if there were any |
4606 | relocations where pointer equality matters (this is a clue | |
51b64d56 AM |
4607 | for the dynamic linker, to make function pointer |
4608 | comparisons work between an application and shared | |
c6585bbb JJ |
4609 | library), otherwise set it to zero. If a function is only |
4610 | called from a binary, there is no need to slow down | |
4611 | shared libraries because of that. */ | |
252b5132 | 4612 | sym->st_shndx = SHN_UNDEF; |
f5385ebf | 4613 | if (!h->pointer_equality_needed) |
c6585bbb | 4614 | sym->st_value = 0; |
252b5132 RH |
4615 | } |
4616 | } | |
4617 | ||
13ae64f3 | 4618 | if (h->got.offset != (bfd_vma) -1 |
67a4f2b7 | 4619 | && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type) |
37e55690 | 4620 | && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0) |
252b5132 | 4621 | { |
947216bf | 4622 | Elf_Internal_Rela rel; |
252b5132 RH |
4623 | |
4624 | /* This symbol has an entry in the global offset table. Set it | |
4625 | up. */ | |
4626 | ||
6de2ae4a | 4627 | if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL) |
ffb2e45b | 4628 | abort (); |
252b5132 | 4629 | |
6de2ae4a L |
4630 | rel.r_offset = (htab->elf.sgot->output_section->vma |
4631 | + htab->elf.sgot->output_offset | |
dc810e39 | 4632 | + (h->got.offset & ~(bfd_vma) 1)); |
252b5132 | 4633 | |
dd5724d5 AM |
4634 | /* If this is a static link, or it is a -Bsymbolic link and the |
4635 | symbol is defined locally or was forced to be local because | |
4636 | of a version file, we just want to emit a RELATIVE reloc. | |
252b5132 RH |
4637 | The entry in the global offset table will already have been |
4638 | initialized in the relocate_section function. */ | |
710ab287 | 4639 | if (h->def_regular |
0018b0a3 L |
4640 | && h->type == STT_GNU_IFUNC) |
4641 | { | |
710ab287 L |
4642 | if (info->shared) |
4643 | { | |
4644 | /* Generate R_386_GLOB_DAT. */ | |
4645 | goto do_glob_dat; | |
4646 | } | |
4647 | else | |
4648 | { | |
cd2b2c10 L |
4649 | asection *plt; |
4650 | ||
710ab287 L |
4651 | if (!h->pointer_equality_needed) |
4652 | abort (); | |
4653 | ||
4654 | /* For non-shared object, we can't use .got.plt, which | |
4655 | contains the real function addres if we need pointer | |
4656 | equality. We load the GOT entry with the PLT entry. */ | |
cd2b2c10 | 4657 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; |
710ab287 L |
4658 | bfd_put_32 (output_bfd, |
4659 | (plt->output_section->vma | |
4660 | + plt->output_offset + h->plt.offset), | |
6de2ae4a | 4661 | htab->elf.sgot->contents + h->got.offset); |
710ab287 L |
4662 | return TRUE; |
4663 | } | |
0018b0a3 L |
4664 | } |
4665 | else if (info->shared | |
4666 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
dd5724d5 | 4667 | { |
6725bdbf | 4668 | BFD_ASSERT((h->got.offset & 1) != 0); |
dd5724d5 AM |
4669 | rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); |
4670 | } | |
252b5132 RH |
4671 | else |
4672 | { | |
dd5724d5 | 4673 | BFD_ASSERT((h->got.offset & 1) == 0); |
710ab287 | 4674 | do_glob_dat: |
6725bdbf | 4675 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
6de2ae4a | 4676 | htab->elf.sgot->contents + h->got.offset); |
252b5132 RH |
4677 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); |
4678 | } | |
4679 | ||
59d6ffb2 | 4680 | elf_append_rel (output_bfd, htab->elf.srelgot, &rel); |
252b5132 RH |
4681 | } |
4682 | ||
f5385ebf | 4683 | if (h->needs_copy) |
252b5132 | 4684 | { |
947216bf | 4685 | Elf_Internal_Rela rel; |
252b5132 RH |
4686 | |
4687 | /* This symbol needs a copy reloc. Set it up. */ | |
4688 | ||
ffb2e45b AM |
4689 | if (h->dynindx == -1 |
4690 | || (h->root.type != bfd_link_hash_defined | |
4691 | && h->root.type != bfd_link_hash_defweak) | |
4692 | || htab->srelbss == NULL) | |
4693 | abort (); | |
252b5132 RH |
4694 | |
4695 | rel.r_offset = (h->root.u.def.value | |
4696 | + h->root.u.def.section->output_section->vma | |
4697 | + h->root.u.def.section->output_offset); | |
4698 | rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); | |
59d6ffb2 | 4699 | elf_append_rel (output_bfd, htab->srelbss, &rel); |
252b5132 RH |
4700 | } |
4701 | ||
b34976b6 | 4702 | return TRUE; |
252b5132 RH |
4703 | } |
4704 | ||
c25bc9fc L |
4705 | /* Finish up local dynamic symbol handling. We set the contents of |
4706 | various dynamic sections here. */ | |
4707 | ||
4708 | static bfd_boolean | |
4709 | elf_i386_finish_local_dynamic_symbol (void **slot, void *inf) | |
4710 | { | |
4711 | struct elf_link_hash_entry *h | |
4712 | = (struct elf_link_hash_entry *) *slot; | |
4713 | struct bfd_link_info *info | |
23209a78 | 4714 | = (struct bfd_link_info *) inf; |
c25bc9fc L |
4715 | |
4716 | return elf_i386_finish_dynamic_symbol (info->output_bfd, info, | |
4717 | h, NULL); | |
4718 | } | |
4719 | ||
38701953 AM |
4720 | /* Used to decide how to sort relocs in an optimal manner for the |
4721 | dynamic linker, before writing them out. */ | |
4722 | ||
4723 | static enum elf_reloc_type_class | |
7e612e98 AM |
4724 | elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4725 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
4726 | const Elf_Internal_Rela *rela) | |
38701953 | 4727 | { |
55fd94b0 | 4728 | switch (ELF32_R_TYPE (rela->r_info)) |
38701953 AM |
4729 | { |
4730 | case R_386_RELATIVE: | |
4731 | return reloc_class_relative; | |
4732 | case R_386_JUMP_SLOT: | |
4733 | return reloc_class_plt; | |
4734 | case R_386_COPY: | |
4735 | return reloc_class_copy; | |
4736 | default: | |
4737 | return reloc_class_normal; | |
4738 | } | |
4739 | } | |
4740 | ||
252b5132 RH |
4741 | /* Finish up the dynamic sections. */ |
4742 | ||
b34976b6 | 4743 | static bfd_boolean |
55fd94b0 AM |
4744 | elf_i386_finish_dynamic_sections (bfd *output_bfd, |
4745 | struct bfd_link_info *info) | |
252b5132 | 4746 | { |
6725bdbf | 4747 | struct elf_i386_link_hash_table *htab; |
252b5132 | 4748 | bfd *dynobj; |
252b5132 | 4749 | asection *sdyn; |
25e762b9 | 4750 | const struct elf_i386_backend_data *abed; |
252b5132 | 4751 | |
6725bdbf | 4752 | htab = elf_i386_hash_table (info); |
4dfe6ac6 NC |
4753 | if (htab == NULL) |
4754 | return FALSE; | |
4755 | ||
ebe50bae | 4756 | dynobj = htab->elf.dynobj; |
3d4d4302 | 4757 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
25e762b9 | 4758 | abed = get_elf_i386_backend_data (output_bfd); |
252b5132 | 4759 | |
ebe50bae | 4760 | if (htab->elf.dynamic_sections_created) |
252b5132 | 4761 | { |
252b5132 RH |
4762 | Elf32_External_Dyn *dyncon, *dynconend; |
4763 | ||
6de2ae4a | 4764 | if (sdyn == NULL || htab->elf.sgot == NULL) |
ffb2e45b | 4765 | abort (); |
252b5132 RH |
4766 | |
4767 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
eea6121a | 4768 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
252b5132 RH |
4769 | for (; dyncon < dynconend; dyncon++) |
4770 | { | |
4771 | Elf_Internal_Dyn dyn; | |
51b64d56 | 4772 | asection *s; |
252b5132 RH |
4773 | |
4774 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
4775 | ||
4776 | switch (dyn.d_tag) | |
4777 | { | |
4778 | default: | |
25e762b9 RM |
4779 | if (abed->is_vxworks |
4780 | && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn)) | |
7a2b07ff | 4781 | break; |
0ac8d2ca | 4782 | continue; |
252b5132 RH |
4783 | |
4784 | case DT_PLTGOT: | |
6de2ae4a | 4785 | s = htab->elf.sgotplt; |
8c37241b | 4786 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
6725bdbf AM |
4787 | break; |
4788 | ||
252b5132 | 4789 | case DT_JMPREL: |
6de2ae4a | 4790 | s = htab->elf.srelplt; |
6348e046 | 4791 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
252b5132 RH |
4792 | break; |
4793 | ||
4794 | case DT_PLTRELSZ: | |
6de2ae4a | 4795 | s = htab->elf.srelplt; |
eea6121a | 4796 | dyn.d_un.d_val = s->size; |
252b5132 RH |
4797 | break; |
4798 | ||
4799 | case DT_RELSZ: | |
4800 | /* My reading of the SVR4 ABI indicates that the | |
4801 | procedure linkage table relocs (DT_JMPREL) should be | |
4802 | included in the overall relocs (DT_REL). This is | |
4803 | what Solaris does. However, UnixWare can not handle | |
4804 | that case. Therefore, we override the DT_RELSZ entry | |
6348e046 | 4805 | here to make it not include the JMPREL relocs. */ |
6de2ae4a | 4806 | s = htab->elf.srelplt; |
6348e046 AM |
4807 | if (s == NULL) |
4808 | continue; | |
eea6121a | 4809 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
4810 | break; |
4811 | ||
4812 | case DT_REL: | |
4813 | /* We may not be using the standard ELF linker script. | |
4814 | If .rel.plt is the first .rel section, we adjust | |
4815 | DT_REL to not include it. */ | |
6de2ae4a | 4816 | s = htab->elf.srelplt; |
6348e046 AM |
4817 | if (s == NULL) |
4818 | continue; | |
4819 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
4820 | continue; | |
eea6121a | 4821 | dyn.d_un.d_ptr += s->size; |
252b5132 RH |
4822 | break; |
4823 | } | |
0ac8d2ca AM |
4824 | |
4825 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
252b5132 RH |
4826 | } |
4827 | ||
4828 | /* Fill in the first entry in the procedure linkage table. */ | |
6de2ae4a | 4829 | if (htab->elf.splt && htab->elf.splt->size > 0) |
252b5132 RH |
4830 | { |
4831 | if (info->shared) | |
eac338cf | 4832 | { |
25e762b9 RM |
4833 | memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry, |
4834 | abed->plt->plt0_entry_size); | |
4835 | memset (htab->elf.splt->contents + abed->plt->plt0_entry_size, | |
4836 | abed->plt0_pad_byte, | |
4837 | abed->plt->plt_entry_size - abed->plt->plt0_entry_size); | |
eac338cf | 4838 | } |
252b5132 RH |
4839 | else |
4840 | { | |
25e762b9 RM |
4841 | memcpy (htab->elf.splt->contents, abed->plt->plt0_entry, |
4842 | abed->plt->plt0_entry_size); | |
4843 | memset (htab->elf.splt->contents + abed->plt->plt0_entry_size, | |
4844 | abed->plt0_pad_byte, | |
4845 | abed->plt->plt_entry_size - abed->plt->plt0_entry_size); | |
252b5132 | 4846 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4847 | (htab->elf.sgotplt->output_section->vma |
4848 | + htab->elf.sgotplt->output_offset | |
6725bdbf | 4849 | + 4), |
25e762b9 RM |
4850 | htab->elf.splt->contents |
4851 | + abed->plt->plt0_got1_offset); | |
252b5132 | 4852 | bfd_put_32 (output_bfd, |
6de2ae4a L |
4853 | (htab->elf.sgotplt->output_section->vma |
4854 | + htab->elf.sgotplt->output_offset | |
6725bdbf | 4855 | + 8), |
25e762b9 RM |
4856 | htab->elf.splt->contents |
4857 | + abed->plt->plt0_got2_offset); | |
eac338cf | 4858 | |
25e762b9 | 4859 | if (abed->is_vxworks) |
eac338cf PB |
4860 | { |
4861 | Elf_Internal_Rela rel; | |
7325306f | 4862 | |
eac338cf PB |
4863 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4. |
4864 | On IA32 we use REL relocations so the addend goes in | |
4865 | the PLT directly. */ | |
6de2ae4a L |
4866 | rel.r_offset = (htab->elf.splt->output_section->vma |
4867 | + htab->elf.splt->output_offset | |
25e762b9 | 4868 | + abed->plt->plt0_got1_offset); |
7325306f | 4869 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4870 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
4871 | htab->srelplt2->contents); | |
4872 | /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ | |
6de2ae4a L |
4873 | rel.r_offset = (htab->elf.splt->output_section->vma |
4874 | + htab->elf.splt->output_offset | |
25e762b9 | 4875 | + abed->plt->plt0_got2_offset); |
7325306f | 4876 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4877 | bfd_elf32_swap_reloc_out (output_bfd, &rel, |
4878 | htab->srelplt2->contents + | |
4879 | sizeof (Elf32_External_Rel)); | |
4880 | } | |
252b5132 RH |
4881 | } |
4882 | ||
4883 | /* UnixWare sets the entsize of .plt to 4, although that doesn't | |
4884 | really seem like the right value. */ | |
6de2ae4a | 4885 | elf_section_data (htab->elf.splt->output_section) |
6725bdbf | 4886 | ->this_hdr.sh_entsize = 4; |
eac338cf PB |
4887 | |
4888 | /* Correct the .rel.plt.unloaded relocations. */ | |
25e762b9 | 4889 | if (abed->is_vxworks && !info->shared) |
eac338cf | 4890 | { |
25e762b9 RM |
4891 | int num_plts = (htab->elf.splt->size |
4892 | / abed->plt->plt_entry_size) - 1; | |
4c9b0de6 | 4893 | unsigned char *p; |
eac338cf PB |
4894 | |
4895 | p = htab->srelplt2->contents; | |
4896 | if (info->shared) | |
4897 | p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel); | |
4898 | else | |
4899 | p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel); | |
4900 | ||
4901 | for (; num_plts; num_plts--) | |
4902 | { | |
4903 | Elf_Internal_Rela rel; | |
4904 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 4905 | rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32); |
eac338cf PB |
4906 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
4907 | p += sizeof (Elf32_External_Rel); | |
4908 | ||
4909 | bfd_elf32_swap_reloc_in (output_bfd, p, &rel); | |
7325306f | 4910 | rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32); |
eac338cf PB |
4911 | bfd_elf32_swap_reloc_out (output_bfd, &rel, p); |
4912 | p += sizeof (Elf32_External_Rel); | |
4913 | } | |
4914 | } | |
252b5132 RH |
4915 | } |
4916 | } | |
4917 | ||
6de2ae4a | 4918 | if (htab->elf.sgotplt) |
252b5132 | 4919 | { |
56d4289c L |
4920 | if (bfd_is_abs_section (htab->elf.sgotplt->output_section)) |
4921 | { | |
4922 | (*_bfd_error_handler) | |
4923 | (_("discarded output section: `%A'"), htab->elf.sgotplt); | |
4924 | return FALSE; | |
4925 | } | |
4926 | ||
12d0ee4a | 4927 | /* Fill in the first three entries in the global offset table. */ |
6de2ae4a | 4928 | if (htab->elf.sgotplt->size > 0) |
12d0ee4a AM |
4929 | { |
4930 | bfd_put_32 (output_bfd, | |
55fd94b0 | 4931 | (sdyn == NULL ? 0 |
12d0ee4a | 4932 | : sdyn->output_section->vma + sdyn->output_offset), |
6de2ae4a L |
4933 | htab->elf.sgotplt->contents); |
4934 | bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4); | |
4935 | bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8); | |
12d0ee4a | 4936 | } |
252b5132 | 4937 | |
6de2ae4a | 4938 | elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4; |
12d0ee4a | 4939 | } |
8c37241b | 4940 | |
e41b3a13 | 4941 | /* Adjust .eh_frame for .plt section. */ |
9a2a56cc AM |
4942 | if (htab->plt_eh_frame != NULL |
4943 | && htab->plt_eh_frame->contents != NULL) | |
e41b3a13 JJ |
4944 | { |
4945 | if (htab->elf.splt != NULL | |
4946 | && htab->elf.splt->size != 0 | |
4947 | && (htab->elf.splt->flags & SEC_EXCLUDE) == 0 | |
4948 | && htab->elf.splt->output_section != NULL | |
4949 | && htab->plt_eh_frame->output_section != NULL) | |
4950 | { | |
4951 | bfd_vma plt_start = htab->elf.splt->output_section->vma; | |
4952 | bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma | |
4953 | + htab->plt_eh_frame->output_offset | |
4954 | + PLT_FDE_START_OFFSET; | |
4955 | bfd_put_signed_32 (dynobj, plt_start - eh_frame_start, | |
4956 | htab->plt_eh_frame->contents | |
4957 | + PLT_FDE_START_OFFSET); | |
4958 | } | |
4959 | if (htab->plt_eh_frame->sec_info_type | |
dbaa2011 | 4960 | == SEC_INFO_TYPE_EH_FRAME) |
e41b3a13 JJ |
4961 | { |
4962 | if (! _bfd_elf_write_section_eh_frame (output_bfd, info, | |
4963 | htab->plt_eh_frame, | |
4964 | htab->plt_eh_frame->contents)) | |
4965 | return FALSE; | |
4966 | } | |
4967 | } | |
4968 | ||
6de2ae4a L |
4969 | if (htab->elf.sgot && htab->elf.sgot->size > 0) |
4970 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4; | |
8c37241b | 4971 | |
c25bc9fc L |
4972 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ |
4973 | htab_traverse (htab->loc_hash_table, | |
4974 | elf_i386_finish_local_dynamic_symbol, | |
4975 | info); | |
4976 | ||
b34976b6 | 4977 | return TRUE; |
252b5132 RH |
4978 | } |
4979 | ||
4c45e5c9 JJ |
4980 | /* Return address for Ith PLT stub in section PLT, for relocation REL |
4981 | or (bfd_vma) -1 if it should not be included. */ | |
4982 | ||
4983 | static bfd_vma | |
4984 | elf_i386_plt_sym_val (bfd_vma i, const asection *plt, | |
4985 | const arelent *rel ATTRIBUTE_UNUSED) | |
4986 | { | |
25e762b9 | 4987 | return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner); |
4c45e5c9 JJ |
4988 | } |
4989 | ||
fdc90cb4 JJ |
4990 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
4991 | ||
4992 | static bfd_boolean | |
4993 | elf_i386_hash_symbol (struct elf_link_hash_entry *h) | |
4994 | { | |
4995 | if (h->plt.offset != (bfd_vma) -1 | |
4996 | && !h->def_regular | |
4997 | && !h->pointer_equality_needed) | |
4998 | return FALSE; | |
4999 | ||
5000 | return _bfd_elf_hash_symbol (h); | |
5001 | } | |
4c45e5c9 | 5002 | |
d8045f23 NC |
5003 | /* Hook called by the linker routine which adds symbols from an object |
5004 | file. */ | |
5005 | ||
5006 | static bfd_boolean | |
c16153ae | 5007 | elf_i386_add_symbol_hook (bfd * abfd, |
d8045f23 NC |
5008 | struct bfd_link_info * info ATTRIBUTE_UNUSED, |
5009 | Elf_Internal_Sym * sym, | |
5010 | const char ** namep ATTRIBUTE_UNUSED, | |
5011 | flagword * flagsp ATTRIBUTE_UNUSED, | |
5012 | asection ** secp ATTRIBUTE_UNUSED, | |
5013 | bfd_vma * valp ATTRIBUTE_UNUSED) | |
5014 | { | |
c16153ae | 5015 | if ((abfd->flags & DYNAMIC) == 0 |
f64b2e8d NC |
5016 | && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC |
5017 | || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)) | |
5018 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
d8045f23 NC |
5019 | |
5020 | return TRUE; | |
5021 | } | |
5022 | ||
252b5132 RH |
5023 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vec |
5024 | #define TARGET_LITTLE_NAME "elf32-i386" | |
5025 | #define ELF_ARCH bfd_arch_i386 | |
ae95ffa6 | 5026 | #define ELF_TARGET_ID I386_ELF_DATA |
252b5132 RH |
5027 | #define ELF_MACHINE_CODE EM_386 |
5028 | #define ELF_MAXPAGESIZE 0x1000 | |
252b5132 RH |
5029 | |
5030 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 5031 | #define elf_backend_can_refcount 1 |
252b5132 RH |
5032 | #define elf_backend_want_got_plt 1 |
5033 | #define elf_backend_plt_readonly 1 | |
5034 | #define elf_backend_want_plt_sym 0 | |
5035 | #define elf_backend_got_header_size 12 | |
e41b3a13 | 5036 | #define elf_backend_plt_alignment 4 |
252b5132 | 5037 | |
8c29f035 AM |
5038 | /* Support RELA for objdump of prelink objects. */ |
5039 | #define elf_info_to_howto elf_i386_info_to_howto_rel | |
dd5724d5 AM |
5040 | #define elf_info_to_howto_rel elf_i386_info_to_howto_rel |
5041 | ||
13ae64f3 | 5042 | #define bfd_elf32_mkobject elf_i386_mkobject |
13ae64f3 | 5043 | |
dd5724d5 AM |
5044 | #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name |
5045 | #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create | |
c25bc9fc | 5046 | #define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free |
dd5724d5 | 5047 | #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup |
13285a1b | 5048 | #define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup |
dd5724d5 AM |
5049 | |
5050 | #define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol | |
13285a1b | 5051 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
dd5724d5 | 5052 | #define elf_backend_check_relocs elf_i386_check_relocs |
0ac8d2ca | 5053 | #define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol |
6725bdbf | 5054 | #define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections |
0ac8d2ca | 5055 | #define elf_backend_fake_sections elf_i386_fake_sections |
dd5724d5 AM |
5056 | #define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections |
5057 | #define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol | |
5058 | #define elf_backend_gc_mark_hook elf_i386_gc_mark_hook | |
5059 | #define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook | |
c5fccbec DJ |
5060 | #define elf_backend_grok_prstatus elf_i386_grok_prstatus |
5061 | #define elf_backend_grok_psinfo elf_i386_grok_psinfo | |
db6751f2 | 5062 | #define elf_backend_reloc_type_class elf_i386_reloc_type_class |
0ac8d2ca AM |
5063 | #define elf_backend_relocate_section elf_i386_relocate_section |
5064 | #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections | |
67a4f2b7 | 5065 | #define elf_backend_always_size_sections elf_i386_always_size_sections |
74541ad4 AM |
5066 | #define elf_backend_omit_section_dynsym \ |
5067 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
4c45e5c9 | 5068 | #define elf_backend_plt_sym_val elf_i386_plt_sym_val |
fdc90cb4 | 5069 | #define elf_backend_hash_symbol elf_i386_hash_symbol |
d8045f23 | 5070 | #define elf_backend_add_symbol_hook elf_i386_add_symbol_hook |
dd5724d5 | 5071 | |
252b5132 | 5072 | #include "elf32-target.h" |
2bc3c89a AM |
5073 | |
5074 | /* FreeBSD support. */ | |
5075 | ||
5076 | #undef TARGET_LITTLE_SYM | |
5077 | #define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec | |
5078 | #undef TARGET_LITTLE_NAME | |
5079 | #define TARGET_LITTLE_NAME "elf32-i386-freebsd" | |
d1036acb L |
5080 | #undef ELF_OSABI |
5081 | #define ELF_OSABI ELFOSABI_FREEBSD | |
2bc3c89a AM |
5082 | |
5083 | /* The kernel recognizes executables as valid only if they carry a | |
5084 | "FreeBSD" label in the ELF header. So we put this label on all | |
5085 | executables and (for simplicity) also all other object files. */ | |
5086 | ||
2bc3c89a | 5087 | static void |
d8045f23 | 5088 | elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info) |
2bc3c89a | 5089 | { |
78245035 | 5090 | _bfd_elf_post_process_headers (abfd, info); |
2bc3c89a | 5091 | |
2bc3c89a AM |
5092 | #ifdef OLD_FREEBSD_ABI_LABEL |
5093 | /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ | |
5094 | memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); | |
caf47ea6 | 5095 | #endif |
2bc3c89a AM |
5096 | } |
5097 | ||
5098 | #undef elf_backend_post_process_headers | |
d8045f23 | 5099 | #define elf_backend_post_process_headers elf_i386_fbsd_post_process_headers |
571fe01f NC |
5100 | #undef elf32_bed |
5101 | #define elf32_bed elf32_i386_fbsd_bed | |
2bc3c89a | 5102 | |
d8045f23 NC |
5103 | #undef elf_backend_add_symbol_hook |
5104 | ||
2bc3c89a | 5105 | #include "elf32-target.h" |
eac338cf | 5106 | |
a6cc6b3b RO |
5107 | /* Solaris 2. */ |
5108 | ||
5109 | #undef TARGET_LITTLE_SYM | |
5110 | #define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec | |
5111 | #undef TARGET_LITTLE_NAME | |
5112 | #define TARGET_LITTLE_NAME "elf32-i386-sol2" | |
5113 | ||
5114 | /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE | |
5115 | objects won't be recognized. */ | |
5116 | #undef ELF_OSABI | |
5117 | ||
5118 | #undef elf32_bed | |
5119 | #define elf32_bed elf32_i386_sol2_bed | |
5120 | ||
7dc98aea RO |
5121 | /* The 32-bit static TLS arena size is rounded to the nearest 8-byte |
5122 | boundary. */ | |
5123 | #undef elf_backend_static_tls_alignment | |
5124 | #define elf_backend_static_tls_alignment 8 | |
5125 | ||
a6cc6b3b RO |
5126 | /* The Solaris 2 ABI requires a plt symbol on all platforms. |
5127 | ||
5128 | Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output | |
5129 | File, p.63. */ | |
5130 | #undef elf_backend_want_plt_sym | |
5131 | #define elf_backend_want_plt_sym 1 | |
5132 | ||
5133 | #include "elf32-target.h" | |
5134 | ||
a27e4371 RM |
5135 | /* Native Client support. */ |
5136 | ||
5137 | #undef TARGET_LITTLE_SYM | |
5138 | #define TARGET_LITTLE_SYM bfd_elf32_i386_nacl_vec | |
5139 | #undef TARGET_LITTLE_NAME | |
5140 | #define TARGET_LITTLE_NAME "elf32-i386-nacl" | |
5141 | #undef elf32_bed | |
5142 | #define elf32_bed elf32_i386_nacl_bed | |
5143 | ||
5144 | #undef ELF_MAXPAGESIZE | |
5145 | #define ELF_MAXPAGESIZE 0x10000 | |
5146 | ||
5147 | /* Restore defaults. */ | |
5148 | #undef ELF_OSABI | |
5149 | #undef elf_backend_want_plt_sym | |
5150 | #define elf_backend_want_plt_sym 0 | |
5151 | #undef elf_backend_post_process_headers | |
a27e4371 RM |
5152 | #undef elf_backend_static_tls_alignment |
5153 | ||
5154 | /* NaCl uses substantially different PLT entries for the same effects. */ | |
5155 | ||
5156 | #undef elf_backend_plt_alignment | |
5157 | #define elf_backend_plt_alignment 5 | |
5158 | #define NACL_PLT_ENTRY_SIZE 64 | |
5159 | #define NACLMASK 0xe0 /* 32-byte alignment mask. */ | |
5160 | ||
5161 | static const bfd_byte elf_i386_nacl_plt0_entry[] = | |
5162 | { | |
5163 | 0xff, 0x35, /* pushl contents of address */ | |
5164 | 0, 0, 0, 0, /* replaced with address of .got + 4. */ | |
5165 | 0x8b, 0x0d, /* movl contents of address, %ecx */ | |
5166 | 0, 0, 0, 0, /* replaced with address of .got + 8. */ | |
5167 | 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */ | |
5168 | 0xff, 0xe1 /* jmp *%ecx */ | |
5169 | }; | |
5170 | ||
5171 | static const bfd_byte elf_i386_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] = | |
5172 | { | |
5173 | 0x8b, 0x0d, /* movl contents of address, %ecx */ | |
5174 | 0, 0, 0, 0, /* replaced with GOT slot address. */ | |
5175 | 0x83, 0xe1, NACLMASK, /* andl $NACLMASK, %ecx */ | |
5176 | 0xff, 0xe1, /* jmp *%ecx */ | |
5177 | ||
5178 | /* Pad to the next 32-byte boundary with nop instructions. */ | |
5179 | 0x90, | |
5180 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5181 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5182 | ||
5183 | /* Lazy GOT entries point here (32-byte aligned). */ | |
5184 | 0x68, /* pushl immediate */ | |
5185 | 0, 0, 0, 0, /* replaced with reloc offset. */ | |
5186 | 0xe9, /* jmp relative */ | |
5187 | 0, 0, 0, 0, /* replaced with offset to .plt. */ | |
5188 | ||
5189 | /* Pad to the next 32-byte boundary with nop instructions. */ | |
5190 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5191 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5192 | 0x90, 0x90 | |
5193 | }; | |
5194 | ||
5195 | static const bfd_byte | |
5196 | elf_i386_nacl_pic_plt0_entry[sizeof (elf_i386_nacl_plt0_entry)] = | |
5197 | { | |
5198 | 0xff, 0x73, 0x04, /* pushl 4(%ebx) */ | |
5199 | 0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */ | |
5200 | 0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */ | |
5201 | 0xff, 0xe1, /* jmp *%ecx */ | |
caa0075c RM |
5202 | |
5203 | /* This is expected to be the same size as elf_i386_nacl_plt0_entry, | |
5204 | so pad to that size with nop instructions. */ | |
5205 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90 | |
a27e4371 RM |
5206 | }; |
5207 | ||
5208 | static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] = | |
5209 | { | |
5210 | 0x8b, 0x8b, /* movl offset(%ebx), %ecx */ | |
5211 | 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */ | |
5212 | 0x83, 0xe1, 0xe0, /* andl $NACLMASK, %ecx */ | |
5213 | 0xff, 0xe1, /* jmp *%ecx */ | |
5214 | ||
5215 | /* Pad to the next 32-byte boundary with nop instructions. */ | |
5216 | 0x90, | |
5217 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5218 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5219 | ||
5220 | /* Lazy GOT entries point here (32-byte aligned). */ | |
5221 | 0x68, /* pushl immediate */ | |
5222 | 0, 0, 0, 0, /* replaced with offset into relocation table. */ | |
5223 | 0xe9, /* jmp relative */ | |
5224 | 0, 0, 0, 0, /* replaced with offset to start of .plt. */ | |
5225 | ||
5226 | /* Pad to the next 32-byte boundary with nop instructions. */ | |
5227 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5228 | 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, | |
5229 | 0x90, 0x90 | |
5230 | }; | |
5231 | ||
5232 | static const bfd_byte elf_i386_nacl_eh_frame_plt[] = | |
5233 | { | |
5234 | #if (PLT_CIE_LENGTH != 20 \ | |
5235 | || PLT_FDE_LENGTH != 36 \ | |
5236 | || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \ | |
5237 | || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12) | |
5238 | # error "Need elf_i386_backend_data parameters for eh_frame_plt offsets!" | |
5239 | #endif | |
5240 | PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ | |
5241 | 0, 0, 0, 0, /* CIE ID */ | |
5242 | 1, /* CIE version */ | |
5243 | 'z', 'R', 0, /* Augmentation string */ | |
5244 | 1, /* Code alignment factor */ | |
5245 | 0x7c, /* Data alignment factor: -4 */ | |
5246 | 8, /* Return address column */ | |
5247 | 1, /* Augmentation size */ | |
5248 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ | |
5249 | DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */ | |
5250 | DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */ | |
5251 | DW_CFA_nop, DW_CFA_nop, | |
5252 | ||
5253 | PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ | |
5254 | PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */ | |
5255 | 0, 0, 0, 0, /* R_386_PC32 .plt goes here */ | |
5256 | 0, 0, 0, 0, /* .plt size goes here */ | |
5257 | 0, /* Augmentation size */ | |
5258 | DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */ | |
5259 | DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ | |
5260 | DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */ | |
5261 | DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */ | |
5262 | DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ | |
5263 | 13, /* Block length */ | |
5264 | DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */ | |
5265 | DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */ | |
5266 | DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge, | |
5267 | DW_OP_lit2, DW_OP_shl, DW_OP_plus, | |
5268 | DW_CFA_nop, DW_CFA_nop | |
5269 | }; | |
5270 | ||
5271 | static const struct elf_i386_plt_layout elf_i386_nacl_plt = | |
5272 | { | |
5273 | elf_i386_nacl_plt0_entry, /* plt0_entry */ | |
5274 | sizeof (elf_i386_nacl_plt0_entry), /* plt0_entry_size */ | |
5275 | 2, /* plt0_got1_offset */ | |
5276 | 8, /* plt0_got2_offset */ | |
5277 | elf_i386_nacl_plt_entry, /* plt_entry */ | |
5278 | NACL_PLT_ENTRY_SIZE, /* plt_entry_size */ | |
5279 | 2, /* plt_got_offset */ | |
5280 | 33, /* plt_reloc_offset */ | |
5281 | 38, /* plt_plt_offset */ | |
5282 | 32, /* plt_lazy_offset */ | |
5283 | elf_i386_nacl_pic_plt0_entry, /* pic_plt0_entry */ | |
5284 | elf_i386_nacl_pic_plt_entry, /* pic_plt_entry */ | |
5285 | elf_i386_nacl_eh_frame_plt, /* eh_frame_plt */ | |
5286 | sizeof (elf_i386_nacl_eh_frame_plt),/* eh_frame_plt_size */ | |
5287 | }; | |
5288 | ||
5289 | static const struct elf_i386_backend_data elf_i386_nacl_arch_bed = | |
5290 | { | |
5291 | &elf_i386_nacl_plt, /* plt */ | |
5292 | 0x90, /* plt0_pad_byte: nop insn */ | |
5293 | 0, /* is_vxworks */ | |
5294 | }; | |
5295 | ||
64b384e1 RM |
5296 | static bfd_boolean |
5297 | elf32_i386_nacl_elf_object_p (bfd *abfd) | |
5298 | { | |
5299 | /* Set the right machine number for a NaCl i386 ELF32 file. */ | |
5300 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl); | |
5301 | return TRUE; | |
5302 | } | |
5303 | ||
a27e4371 RM |
5304 | #undef elf_backend_arch_data |
5305 | #define elf_backend_arch_data &elf_i386_nacl_arch_bed | |
5306 | ||
64b384e1 RM |
5307 | #undef elf_backend_object_p |
5308 | #define elf_backend_object_p elf32_i386_nacl_elf_object_p | |
5a68afcf RM |
5309 | #undef elf_backend_modify_segment_map |
5310 | #define elf_backend_modify_segment_map nacl_modify_segment_map | |
5311 | #undef elf_backend_modify_program_headers | |
5312 | #define elf_backend_modify_program_headers nacl_modify_program_headers | |
887badb3 RM |
5313 | #undef elf_backend_final_write_processing |
5314 | #define elf_backend_final_write_processing nacl_final_write_processing | |
5a68afcf | 5315 | |
a27e4371 RM |
5316 | #include "elf32-target.h" |
5317 | ||
5a68afcf | 5318 | /* Restore defaults. */ |
64b384e1 | 5319 | #undef elf_backend_object_p |
5a68afcf RM |
5320 | #undef elf_backend_modify_segment_map |
5321 | #undef elf_backend_modify_program_headers | |
887badb3 | 5322 | #undef elf_backend_final_write_processing |
5a68afcf | 5323 | |
eac338cf PB |
5324 | /* VxWorks support. */ |
5325 | ||
5326 | #undef TARGET_LITTLE_SYM | |
5327 | #define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec | |
5328 | #undef TARGET_LITTLE_NAME | |
5329 | #define TARGET_LITTLE_NAME "elf32-i386-vxworks" | |
d1036acb | 5330 | #undef ELF_OSABI |
a27e4371 RM |
5331 | #undef elf_backend_plt_alignment |
5332 | #define elf_backend_plt_alignment 4 | |
eac338cf | 5333 | |
23209a78 RM |
5334 | static const struct elf_i386_backend_data elf_i386_vxworks_arch_bed = |
5335 | { | |
25e762b9 | 5336 | &elf_i386_plt, /* plt */ |
23209a78 RM |
5337 | 0x90, /* plt0_pad_byte */ |
5338 | 1, /* is_vxworks */ | |
5339 | }; | |
eac338cf | 5340 | |
23209a78 RM |
5341 | #undef elf_backend_arch_data |
5342 | #define elf_backend_arch_data &elf_i386_vxworks_arch_bed | |
eac338cf | 5343 | |
13285a1b | 5344 | #undef elf_backend_relocs_compatible |
eac338cf PB |
5345 | #undef elf_backend_add_symbol_hook |
5346 | #define elf_backend_add_symbol_hook \ | |
5347 | elf_vxworks_add_symbol_hook | |
5348 | #undef elf_backend_link_output_symbol_hook | |
5349 | #define elf_backend_link_output_symbol_hook \ | |
9c72ff84 | 5350 | elf_vxworks_link_output_symbol_hook |
eac338cf PB |
5351 | #undef elf_backend_emit_relocs |
5352 | #define elf_backend_emit_relocs elf_vxworks_emit_relocs | |
5353 | #undef elf_backend_final_write_processing | |
5354 | #define elf_backend_final_write_processing \ | |
5355 | elf_vxworks_final_write_processing | |
7dc98aea | 5356 | #undef elf_backend_static_tls_alignment |
eac338cf PB |
5357 | |
5358 | /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so | |
5359 | define it. */ | |
5360 | #undef elf_backend_want_plt_sym | |
5361 | #define elf_backend_want_plt_sym 1 | |
5362 | ||
5363 | #undef elf32_bed | |
5364 | #define elf32_bed elf32_i386_vxworks_bed | |
5365 | ||
5366 | #include "elf32-target.h" |