48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
//===-- sanitizer_getauxval.h -----------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Common getauxval() guards and definitions.
|
|
// getauxval() is not defined until glibc version 2.16, or until API level 21
|
|
// for Android.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef SANITIZER_GETAUXVAL_H
|
|
#define SANITIZER_GETAUXVAL_H
|
|
|
|
#include "sanitizer_platform.h"
|
|
|
|
#if SANITIZER_LINUX
|
|
|
|
# include <features.h>
|
|
|
|
# ifndef __GLIBC_PREREQ
|
|
# define __GLIBC_PREREQ(x, y) 0
|
|
# endif
|
|
|
|
# if __GLIBC_PREREQ(2, 16) || (SANITIZER_ANDROID && __ANDROID_API__ >= 21)
|
|
# define SANITIZER_USE_GETAUXVAL 1
|
|
# else
|
|
# define SANITIZER_USE_GETAUXVAL 0
|
|
# endif
|
|
|
|
# if SANITIZER_USE_GETAUXVAL
|
|
# include <sys/auxv.h>
|
|
# else
|
|
// The weak getauxval definition allows to check for the function at runtime.
|
|
// This is useful for Android, when compiled at a lower API level yet running
|
|
// on a more recent platform that offers the function.
|
|
extern "C" SANITIZER_WEAK_ATTRIBUTE
|
|
unsigned long getauxval(unsigned long type); // NOLINT
|
|
# endif
|
|
|
|
#endif // SANITIZER_LINUX
|
|
|
|
#endif // SANITIZER_GETAUXVAL_H
|