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https://github.com/dart-lang/sdk
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854dc20416
Cf. 1af37bd92a.
TEST=ci
Change-Id: I61186646ef2aab69d8ffac36073829d5cc865408
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/284547
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
// Copyright (c) 2014, 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_VM_CPU_ARM64_H_
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#define RUNTIME_VM_CPU_ARM64_H_
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#if !defined(RUNTIME_VM_CPU_H_)
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#error Do not include cpu_arm64.h directly; use cpu.h instead.
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#endif
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#include "vm/allocation.h"
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#include "vm/flags.h"
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#include "vm/simulator.h"
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namespace dart {
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// TargetCPUFeatures gives CPU features for the architecture that we are
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// generating code for. HostCPUFeatures gives the CPU features for the
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// architecture that we are actually running on. When the architectures
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// are the same, TargetCPUFeatures will query HostCPUFeatures. When they are
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// different (i.e. we are running in a simulator), HostCPUFeatures will
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// additionally mock the options needed for the target architecture so that
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// they may be altered for testing.
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class HostCPUFeatures : public AllStatic {
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public:
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static void Init();
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static void Cleanup();
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static const char* hardware() {
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DEBUG_ASSERT(initialized_);
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return hardware_;
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}
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private:
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static const char* hardware_;
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#if defined(DEBUG)
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static bool initialized_;
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#endif
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};
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class TargetCPUFeatures : public AllStatic {
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public:
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static void Init() { HostCPUFeatures::Init(); }
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static void Cleanup() { HostCPUFeatures::Cleanup(); }
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static const char* hardware() { return HostCPUFeatures::hardware(); }
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static bool double_truncate_round_supported() { return false; }
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static bool atomic_memory_supported() {
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#if defined(DART_TARGET_OS_MACOS) && !defined(DART_TARGET_OS_MACOS_IOS)
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return true; // Mac ARM64 starts at ARMv8.5.
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#else
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return false; // All else start at ARMv8.0.
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#endif
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}
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};
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} // namespace dart
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#endif // RUNTIME_VM_CPU_ARM64_H_
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