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df54b81dd1
TEST=build Change-Id: I44b41bb783b5f5cad221d4508fee18ff0a23afe7 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/325144 Reviewed-by: Zach Anderson <zra@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Ryan Macnak <rmacnak@google.com> Reviewed-by: William Hesse <whesse@google.com>
83 lines
2.6 KiB
C++
83 lines
2.6 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_ARM_H_
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#define RUNTIME_VM_CPU_ARM_H_
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#if !defined(RUNTIME_VM_CPU_H_)
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#error Do not include cpu_arm.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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static bool integer_division_supported() {
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DEBUG_ASSERT(initialized_);
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return integer_division_supported_ && !FLAG_target_unknown_cpu;
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}
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static bool neon_supported() {
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DEBUG_ASSERT(initialized_);
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return neon_supported_;
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}
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static bool hardfp_supported() {
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DEBUG_ASSERT(initialized_);
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return hardfp_supported_;
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}
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#if !defined(HOST_ARCH_ARM)
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static void set_integer_division_supported(bool supported) {
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DEBUG_ASSERT(initialized_);
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integer_division_supported_ = supported;
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}
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static void set_neon_supported(bool supported) {
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DEBUG_ASSERT(initialized_);
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neon_supported_ = supported;
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}
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#endif // !defined(HOST_ARCH_ARM)
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private:
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static const char* hardware_;
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static bool integer_division_supported_;
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static bool neon_supported_;
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static bool hardfp_supported_;
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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 bool double_truncate_round_supported() { return false; }
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static bool integer_division_supported() {
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return HostCPUFeatures::integer_division_supported();
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}
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static bool neon_supported() { return HostCPUFeatures::neon_supported(); }
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static bool hardfp_supported() { return HostCPUFeatures::hardfp_supported(); }
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static const char* hardware() { return HostCPUFeatures::hardware(); }
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};
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} // namespace dart
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#endif // RUNTIME_VM_CPU_ARM_H_
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