1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *  * Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  *  * Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in
12  *    the documentation and/or other materials provided with the
13  *    distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #ifndef _PRIVATE_BIONIC_VDSO_H
30 #define _PRIVATE_BIONIC_VDSO_H
31 
32 #include <time.h>
33 
34 #if defined(__aarch64__)
35 #define VDSO_CLOCK_GETTIME_SYMBOL "__kernel_clock_gettime"
36 #define VDSO_CLOCK_GETRES_SYMBOL  "__kernel_clock_getres"
37 #define VDSO_GETTIMEOFDAY_SYMBOL  "__kernel_gettimeofday"
38 #define VDSO_TIME_SYMBOL          "__kernel_time"
39 #else
40 #define VDSO_CLOCK_GETTIME_SYMBOL "__vdso_clock_gettime"
41 #define VDSO_CLOCK_GETRES_SYMBOL  "__vdso_clock_getres"
42 #define VDSO_GETTIMEOFDAY_SYMBOL  "__vdso_gettimeofday"
43 #define VDSO_TIME_SYMBOL          "__vdso_time"
44 #endif
45 
46 extern "C" int __clock_gettime(int, timespec*);
47 extern "C" int __clock_getres(int, timespec*);
48 extern "C" int __gettimeofday(timeval*, struct timezone*);
49 
50 struct vdso_entry {
51   const char* name;
52   void* fn;
53 };
54 
55 enum {
56   VDSO_CLOCK_GETTIME = 0,
57   VDSO_CLOCK_GETRES,
58   VDSO_GETTIMEOFDAY,
59   VDSO_TIME,
60   VDSO_END
61 };
62 
63 #endif  // _PRIVATE_BIONIC_VDSO_H
64