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// Copyright (c) 2014, 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.
#if !defined(RUNTIME_VM_CPU_H_)
#error Do not include cpu_arm64.h directly; use cpu.h instead.
#include "vm/allocation.h"
#include "vm/simulator.h"
namespace dart {
// TargetCPUFeatures gives CPU features for the architecture that we are
// generating code for. HostCPUFeatures gives the CPU features for the
// architecture that we are actually running on. When the architectures
// are the same, TargetCPUFeatures will query HostCPUFeatures. When they are
// different (i.e. we are running in a simulator), HostCPUFeatures will
// additionally mock the options needed for the target architecture so that
// they may be altered for testing.
class HostCPUFeatures : public AllStatic {
static void Init();
static void Cleanup();
static const char* hardware() {
return hardware_;
static const char* hardware_;
#if defined(DEBUG)
static bool initialized_;
class TargetCPUFeatures : public AllStatic {
static void Init() { HostCPUFeatures::Init(); }
static void Cleanup() { HostCPUFeatures::Cleanup(); }
static const char* hardware() { return HostCPUFeatures::hardware(); }
static bool double_truncate_round_supported() { return false; }
} // namespace dart
#endif // RUNTIME_VM_CPU_ARM64_H_