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/*
* Copyright (C) 2015 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 ANDROID_BASE_MEMORY_H
#define ANDROID_BASE_MEMORY_H
namespace android {
namespace base {
// Use packed structures for access to unaligned data on targets with alignment
// restrictions. The compiler will generate appropriate code to access these
// structures without generating alignment exceptions.
template <typename T>
static inline T get_unaligned(const T* address) {
struct unaligned {
T v;
} __attribute__((packed));
const unaligned* p = reinterpret_cast<const unaligned*>(address);
return p->v;
}
template <typename T>
static inline void put_unaligned(T* address, T v) {
struct unaligned {
T v;
} __attribute__((packed));
unaligned* p = reinterpret_cast<unaligned*>(address);
p->v = v;
}
} // namespace base
} // namespace android
#endif // ANDROID_BASE_MEMORY_H
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