82 lines
2.5 KiB
C#
82 lines
2.5 KiB
C#
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//
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// Copyright (c) 2010-2024 Antmicro
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//
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// This file is licensed under the MIT License.
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// Full license text is available in 'licenses/MIT.txt'.
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//
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using Antmicro.Renode.Core;
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using Antmicro.Renode.Peripherals.Bus;
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using System.Collections.Generic;
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// using InternalCortexMContextState = Antmicro.Renode.Peripherals.CPU.InternalCortexMContextState;
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namespace Antmicro.Renode.Peripherals.CPU
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{
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public class SampleStateAwareReaderWithTransactionState : IPeripheralWithTransactionState, IBusPeripheral
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{
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public SampleStateAwareReaderWithTransactionState(Machine machine)
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{
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sysbus = machine.GetSystemBus(this);
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}
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public void Reset()
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{
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}
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public uint Read(ulong address, ulong state)
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{
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return sysbus.ReadDoubleWord(address, context: this, cpuState: state);
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}
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public uint ReadUsingStateObj(ulong address)
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{
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if(!TryConvertUlongToStateObj(0, out var contextState))
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{
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return 0;
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}
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return sysbus.ReadDoubleWordWithState(address, this, contextState);
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}
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public bool TryConvertStateObjToUlong(IContextState stateObj, out ulong? state)
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{
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state = null;
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if((stateObj == null) || !(stateObj is CortexM.ContextState cpuStateObj))
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{
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return false;
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}
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state = 0u;
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state |= (cpuStateObj.Privileged ? 1u : 0) & 1u;
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state |= (cpuStateObj.CpuSecure ? 2u : 0) & 2u;
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state |= (cpuStateObj.AttributionSecure ? 4u : 0) & 4u;
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return true;
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}
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public bool TryConvertUlongToStateObj(ulong? state, out IContextState stateObj)
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{
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stateObj = null;
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if(!state.HasValue)
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{
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return false;
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}
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var cpuStateObj = new CortexM.ContextState
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{
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Privileged = (state & 1u) == 1u,
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CpuSecure = (state & 2u) == 2u,
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AttributionSecure = (state & 4u) == 4u
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};
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stateObj = cpuStateObj;
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return true;
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}
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public IReadOnlyDictionary<string, int> StateBits { get { return stateBits; } }
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private static readonly IReadOnlyDictionary<string, int> stateBits = new Dictionary<string, int>
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{
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["privileged"] = 0,
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["cpuSecure"] = 1,
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["attributionSecure"] = 2,
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};
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private IBusController sysbus;
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}
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}
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