platform_bionic/libc/private/bionic_vdso.h
Elliott Hughes 4ce902c30e Support 32-bit ARM vdso.
Linux 4.1 added this.

Bug: http://b/19198045
Change-Id: I28be802ff403a61dd6733a001411b3ff05fef5a5
2016-07-12 13:55:51 -07:00

56 lines
2 KiB
C

/*
* Copyright (C) 2015 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _PRIVATE_BIONIC_VDSO_H
#define _PRIVATE_BIONIC_VDSO_H
#include <time.h>
#if defined(__aarch64__)
#define VDSO_CLOCK_GETTIME_SYMBOL "__kernel_clock_gettime"
#define VDSO_GETTIMEOFDAY_SYMBOL "__kernel_gettimeofday"
#elif defined(__arm__) || defined(__i386__) || defined(__x86_64__)
#define VDSO_CLOCK_GETTIME_SYMBOL "__vdso_clock_gettime"
#define VDSO_GETTIMEOFDAY_SYMBOL "__vdso_gettimeofday"
#endif
extern "C" int __clock_gettime(int, timespec*);
extern "C" int __gettimeofday(timeval*, struct timezone*);
struct vdso_entry {
const char* name;
void* fn;
};
enum {
VDSO_CLOCK_GETTIME = 0,
VDSO_GETTIMEOFDAY,
VDSO_END
};
#endif // _PRIVATE_BIONIC_VDSO_H