Files
android_development/ndk/platforms/android-9/arch-x86/include/sys/atomics.h
David 'Digit' Turner 3e1498c4c4 ndk: x86: Sanitize platform headers and libraries.
This change sanitizes the x86-specific platform headers and libraries.
It does two things:

- Remove the stuff under android-3/arch-x86

- Update the content of android-9/arch-x86 from a recent AOSP
  full_x86-eng build (see caveats below).

Some files appear to move because they didn't change (e.g. kernel headers).

This change was generated by following these steps:

1/ Build full_x86-eng from the AOSP tree

2/ From $ANDROID_ROOT/ndk, run:

   build/tools/dev-system-import.sh --direct --arch=x86 9

3/ Under $ANDROID_ROOT/development/ndk, do:

   git rm -r android-3/arch-x86
   git add android-9/arch-x86
   git checkout -- android-9/include
   git ls-files -o | xargs rm
   git commit

IMPORTANT:
   The AOSP tip-of-tree used to generate these files
   includes post-Gingerbread changes !!

   The final version of the android-9/arch-x86 files will have to
   be generated from the gingerbread branch after we back-port all
   x86-support changes to it.

   These binaries are thus not final, but can be used to generate
   working experimental NDK packages, including prebuilt GNU libstdc++
   and STLport binaries that implement -fstack-protector correctly.

Change-Id: I260896185a098b9b356bd26f492692e4a4f66f8f
2011-05-27 06:14:16 +02:00

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2.2 KiB
C

/*
* Copyright (C) 2011 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 _SYS_ATOMICS_H
#define _SYS_ATOMICS_H
#include <sys/cdefs.h>
#include <sys/time.h>
__BEGIN_DECLS
static inline __attribute__((always_inline)) int
__atomic_cmpxchg(int old, int _new, volatile int *ptr)
{
return !__sync_bool_compare_and_swap (ptr, old, _new);
}
static inline __attribute__((always_inline)) int
__atomic_swap(int _new, volatile int *ptr)
{
return __sync_lock_test_and_set(ptr, _new);
}
static inline __attribute__((always_inline)) int
__atomic_dec(volatile int *ptr)
{
return __sync_fetch_and_sub (ptr, 1);
}
static inline __attribute__((always_inline)) int
__atomic_inc(volatile int *ptr)
{
return __sync_fetch_and_add (ptr, 1);
}
int __futex_wait(volatile void *ftx, int val, const struct timespec *timeout);
int __futex_wake(volatile void *ftx, int count);
__END_DECLS
#endif /* _SYS_ATOMICS_H */