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/*
* Copyright 2012, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _PORTABILITY_H_
#define _PORTABILITY_H_
#include <stdint.h>
#include "asm-generic/portability.h"
/*
* Common portability helper routines
*/
/*
* Check a portable pointer before we access it
* Well behaved programs should not be passing bad pointers
* to the kernel but this routine can be used to check a pointer
* if we need to use it before calling the kernel
*
* It does not catch every possible case but it is sufficient for LTP
*/
inline static int invalid_pointer(void *p)
{
return p == 0
|| p == (void *)-1
#ifdef __mips__
|| (intptr_t)p < 0
#endif
;
}
/*
* Hidden functions are exposed while linking the libportable shared object
* but are not exposed thereafter.
*/
#define __hidden __attribute__((visibility("hidden")))
#endif /* _PORTABILITY_H_ */
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