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| author | Greg Hackmann <ghackmann@google.com> | 2015-04-16 20:43:21 +0000 |
|---|---|---|
| committer | Android Git Automerger <android-git-automerger@android.com> | 2015-04-16 20:43:21 +0000 |
| commit | dd27606bce21b55d409385cfca5ed160cbbce6db (patch) | |
| tree | 9f60ba86e72f8f0001279fa0d1f17b2d9b5a089a /include | |
| parent | d4a09619028b7832b2ee51a4b7874db91a49c6a3 (diff) | |
| parent | 618c2edba1a4723e2673d09615a03368a43c9568 (diff) | |
| download | system_core-dd27606bce21b55d409385cfca5ed160cbbce6db.zip system_core-dd27606bce21b55d409385cfca5ed160cbbce6db.tar.gz system_core-dd27606bce21b55d409385cfca5ed160cbbce6db.tar.bz2 | |
am 618c2edb: am 47578c68: am 88e03449: Merge "cutils: add OS-independent endian.h"
* commit '618c2edba1a4723e2673d09615a03368a43c9568':
cutils: add OS-independent endian.h
Diffstat (limited to 'include')
| -rw-r--r-- | include/cutils/endian.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/include/cutils/endian.h b/include/cutils/endian.h new file mode 100644 index 0000000..3d27ce6 --- /dev/null +++ b/include/cutils/endian.h @@ -0,0 +1,52 @@ +/* + * 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 __CUTILS_ENDIAN_H +#define __CUTILS_ENDIAN_H + +#if defined(__linux__) && !defined(TEST_CUTILS_ENDIAN_H) +#include <endian.h> +#else + +#if !defined(__BYTE_ORDER__) +/* gcc and clang predefine __BYTE_ORDER__, so this should never happen */ +#error Compiler does not define __BYTE_ORDER__ +#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ +#define htobe16(x) (x) +#define htobe32(x) (x) +#define htobe64(x) (x) +#define htole16(x) __builtin_bswap16(x) +#define htole32(x) __builtin_bswap32(x) +#define htole64(x) __builtin_bswap64(x) +#else +#define htobe16(x) __builtin_bswap16(x) +#define htobe32(x) __builtin_bswap32(x) +#define htobe64(x) __builtin_bswap64(x) +#define htole16(x) (x) +#define htole32(x) (x) +#define htole64(x) (x) +#endif /* __BYTE_ORDER__ */ + +#define be16toh(x) htobe16(x) +#define le16toh(x) htole16(x) +#define be32toh(x) htobe32(x) +#define le32toh(x) htole32(x) +#define be64toh(x) htobe64(x) +#define le64toh(x) htole64(x) + +#endif /* defined(__linux__) */ + +#endif /* __CUTILS_ENDIAN_H */ |