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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "code_simulator_arm64.h"
#include <android-base/logging.h>
using namespace vixl::aarch64; // NOLINT(build/namespaces)
namespace art {
namespace arm64 {
// VIXL has not been tested on 32bit architectures, so Simulator is not always
// available. To avoid linker error on these architectures, we check if we can simulate
// in the beginning of following methods, with compile time constant `kCanSimulate`.
// TODO: when Simulator is always available, remove the these checks.
CodeSimulatorArm64* CodeSimulatorArm64::CreateCodeSimulatorArm64() {
if (kCanSimulate) {
return new CodeSimulatorArm64();
} else {
return nullptr;
}
}
CodeSimulatorArm64::CodeSimulatorArm64()
: CodeSimulator(), decoder_(nullptr), simulator_(nullptr) {
DCHECK(kCanSimulate);
decoder_ = new Decoder();
SimStack stack_builder;
stack_builder.SetLimitGuardSize(0x4000);
stack_builder.SetUsableSize(0x4000);
SimStack::Allocated stack = stack_builder.Allocate();
simulator_ = new Simulator(decoder_, stdout, std::move(stack));
}
CodeSimulatorArm64::~CodeSimulatorArm64() {
DCHECK(kCanSimulate);
delete simulator_;
delete decoder_;
}
void CodeSimulatorArm64::RunFrom(intptr_t code_buffer) {
DCHECK(kCanSimulate);
simulator_->RunFrom(reinterpret_cast<const Instruction*>(code_buffer));
}
bool CodeSimulatorArm64::GetCReturnBool() const {
DCHECK(kCanSimulate);
return simulator_->ReadWRegister(0);
}
int32_t CodeSimulatorArm64::GetCReturnInt32() const {
DCHECK(kCanSimulate);
return simulator_->ReadWRegister(0);
}
int64_t CodeSimulatorArm64::GetCReturnInt64() const {
DCHECK(kCanSimulate);
return simulator_->ReadXRegister(0);
}
} // namespace arm64
} // namespace art
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