2 * Copyright (c) 2013 Dmitry Chagin
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #ifndef _LINUX_VDSO_H_
30 #define _LINUX_VDSO_H_
32 #include <sys/types.h>
34 struct linux_vdso_sym {
35 SLIST_ENTRY(linux_vdso_sym) sym;
41 vm_object_t __elfN(linux_shared_page_init)(char **);
42 void __elfN(linux_shared_page_fini)(vm_object_t);
43 void __elfN(linux_vdso_fixup)(struct sysentvec *);
44 void __elfN(linux_vdso_reloc)(struct sysentvec *, long);
45 void __elfN(linux_vdso_sym_init)(struct linux_vdso_sym *);
47 #define LINUX_VDSO_SYM_INTPTR(name) \
49 LINUX_VDSO_SYM_DEFINE(name)
51 #define LINUX_VDSO_SYM_CHAR(name) \
53 LINUX_VDSO_SYM_DEFINE(name)
55 #define LINUX_VDSO_SYM_DEFINE(name) \
56 static struct linux_vdso_sym name ## sym = { \
58 .size = sizeof(#name), \
59 .ptr = (uintptr_t *)&name \
61 SYSINIT(__elfN(name ## _sym_init), SI_SUB_EXEC, \
62 SI_ORDER_FIRST, __elfN(linux_vdso_sym_init), &name ## sym); \
65 #endif /* _LINUX_VDSO_H_ */