mirror of
https://github.com/dart-lang/sdk
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2707880f1b
Bug: https://github.com/dart-lang/sdk/issues/39427 Change-Id: I74e0eee623d88005fb2893d03e284a87daa09260 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/146696 Reviewed-by: Alexander Markov <alexmarkov@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>
44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_PLATFORM_UNALIGNED_H_
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#define RUNTIME_PLATFORM_UNALIGNED_H_
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#include "platform/globals.h"
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#include "platform/undefined_behavior_sanitizer.h"
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namespace dart {
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#if defined(HOST_ARCH_ARM) || defined(HOST_ARCH_ARM64)
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template <typename T>
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static inline T LoadUnaligned(const T* ptr) {
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T value;
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memcpy(reinterpret_cast<void*>(&value), reinterpret_cast<const void*>(ptr),
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sizeof(value));
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return value;
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}
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template <typename T>
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static inline void StoreUnaligned(T* ptr, T value) {
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memcpy(reinterpret_cast<void*>(ptr), reinterpret_cast<const void*>(&value),
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sizeof(value));
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}
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#else // !(HOST_ARCH_ARM || HOST_ARCH_ARM64)
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template <typename T>
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NO_SANITIZE_UNDEFINED("alignment")
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static inline T LoadUnaligned(const T* ptr) {
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return *ptr;
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}
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template <typename T>
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NO_SANITIZE_UNDEFINED("alignment")
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static inline void StoreUnaligned(T* ptr, T value) {
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*ptr = value;
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}
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#endif // !(HOST_ARCH_ARM || HOST_ARCH_ARM64)
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} // namespace dart
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#endif // RUNTIME_PLATFORM_UNALIGNED_H_
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