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      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