dart-sdk/runtime/platform/utils_win.h
Aart Bik c38e19cbbe [vm/compiler] bit utilities
Rationale:
Useful in the future when compiler wants to constant fold
operations related to leading/trailing/counting (non)zeros.

https://github.com/dart-lang/sdk/issues/38346

Change-Id: I158aca125d3a15019af20ca7c2a516b74e4d84c2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/119920
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Aart Bik <ajcbik@google.com>
2019-10-07 18:13:06 +00:00

46 lines
1.1 KiB
C++

// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#ifndef RUNTIME_PLATFORM_UTILS_WIN_H_
#define RUNTIME_PLATFORM_UTILS_WIN_H_
#if !defined(RUNTIME_PLATFORM_UTILS_H_)
#error Do not include utils_win.h directly; use utils.h instead.
#endif
#include <intrin.h>
#include <stdlib.h>
namespace dart {
// WARNING: The below functions assume host is always Little Endian!
inline uint16_t Utils::HostToBigEndian16(uint16_t value) {
return _byteswap_ushort(value);
}
inline uint32_t Utils::HostToBigEndian32(uint32_t value) {
return _byteswap_ulong(value);
}
inline uint64_t Utils::HostToBigEndian64(uint64_t value) {
return _byteswap_uint64(value);
}
inline uint16_t Utils::HostToLittleEndian16(uint16_t value) {
return value;
}
inline uint32_t Utils::HostToLittleEndian32(uint32_t value) {
return value;
}
inline uint64_t Utils::HostToLittleEndian64(uint64_t value) {
return value;
}
} // namespace dart
#endif // RUNTIME_PLATFORM_UTILS_WIN_H_