312 lines
9.8 KiB
C#
312 lines
9.8 KiB
C#
using Ryujinx.Tests.Unicorn.Native;
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using System;
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namespace Ryujinx.Tests.Unicorn
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{
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public class UnicornAArch32 : IDisposable
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{
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internal readonly IntPtr uc;
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private bool _isDisposed = false;
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public IndexedProperty<int, uint> R
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{
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get
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{
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return new IndexedProperty<int, uint>(
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(int i) => GetX(i),
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(int i, uint value) => SetX(i, value));
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}
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}
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public IndexedProperty<int, SimdValue> Q
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{
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get
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{
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return new IndexedProperty<int, SimdValue>(
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(int i) => GetQ(i),
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(int i, SimdValue value) => SetQ(i, value));
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}
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}
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public uint LR
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{
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get => GetRegister(Arm32Register.LR);
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set => SetRegister(Arm32Register.LR, value);
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}
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public uint SP
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{
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get => GetRegister(Arm32Register.SP);
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set => SetRegister(Arm32Register.SP, value);
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}
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public uint PC
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{
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get => GetRegister(Arm32Register.PC) & 0xfffffffeu;
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set => SetRegister(Arm32Register.PC, (value & 0xfffffffeu) | (ThumbFlag ? 1u : 0u));
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}
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public uint CPSR
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{
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get => (uint)GetRegister(Arm32Register.CPSR);
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set => SetRegister(Arm32Register.CPSR, (uint)value);
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}
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public int Fpscr
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{
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get => (int)GetRegister(Arm32Register.FPSCR) | ((int)GetRegister(Arm32Register.FPSCR_NZCV));
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set => SetRegister(Arm32Register.FPSCR, (uint)value);
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}
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public bool QFlag
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{
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get => (CPSR & 0x8000000u) != 0;
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set => CPSR = (CPSR & ~0x8000000u) | (value ? 0x8000000u : 0u);
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}
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public bool OverflowFlag
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{
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get => (CPSR & 0x10000000u) != 0;
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set => CPSR = (CPSR & ~0x10000000u) | (value ? 0x10000000u : 0u);
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}
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public bool CarryFlag
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{
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get => (CPSR & 0x20000000u) != 0;
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set => CPSR = (CPSR & ~0x20000000u) | (value ? 0x20000000u : 0u);
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}
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public bool ZeroFlag
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{
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get => (CPSR & 0x40000000u) != 0;
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set => CPSR = (CPSR & ~0x40000000u) | (value ? 0x40000000u : 0u);
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}
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public bool NegativeFlag
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{
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get => (CPSR & 0x80000000u) != 0;
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set => CPSR = (CPSR & ~0x80000000u) | (value ? 0x80000000u : 0u);
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}
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public bool ThumbFlag
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{
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get => (CPSR & 0x00000020u) != 0;
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set
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{
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CPSR = (CPSR & ~0x00000020u) | (value ? 0x00000020u : 0u);
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SetRegister(Arm32Register.PC, (GetRegister(Arm32Register.PC) & 0xfffffffeu) | (value ? 1u : 0u));
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}
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}
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public UnicornAArch32()
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{
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Interface.Checked(Interface.uc_open(UnicornArch.UC_ARCH_ARM, UnicornMode.UC_MODE_LITTLE_ENDIAN, out uc));
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SetRegister(Arm32Register.C1_C0_2, GetRegister(Arm32Register.C1_C0_2) | 0xf00000);
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SetRegister(Arm32Register.FPEXC, 0x40000000);
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}
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~UnicornAArch32()
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{
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Dispose(false);
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}
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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protected virtual void Dispose(bool disposing)
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{
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if (!_isDisposed)
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{
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Interface.Checked(Native.Interface.uc_close(uc));
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_isDisposed = true;
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}
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}
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public void RunForCount(ulong count)
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{
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Interface.Checked(Native.Interface.uc_emu_start(uc, this.PC, 0xFFFFFFFFFFFFFFFFu, 0, count));
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}
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public void Step()
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{
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RunForCount(1);
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}
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private static Arm32Register[] XRegisters = new Arm32Register[16]
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{
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Arm32Register.R0,
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Arm32Register.R1,
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Arm32Register.R2,
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Arm32Register.R3,
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Arm32Register.R4,
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Arm32Register.R5,
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Arm32Register.R6,
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Arm32Register.R7,
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Arm32Register.R8,
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Arm32Register.R9,
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Arm32Register.R10,
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Arm32Register.R11,
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Arm32Register.R12,
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Arm32Register.R13,
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Arm32Register.R14,
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Arm32Register.R15,
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};
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private static Arm32Register[] QRegisters = new Arm32Register[16]
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{
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Arm32Register.Q0,
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Arm32Register.Q1,
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Arm32Register.Q2,
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Arm32Register.Q3,
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Arm32Register.Q4,
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Arm32Register.Q5,
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Arm32Register.Q6,
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Arm32Register.Q7,
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Arm32Register.Q8,
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Arm32Register.Q9,
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Arm32Register.Q10,
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Arm32Register.Q11,
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Arm32Register.Q12,
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Arm32Register.Q13,
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Arm32Register.Q14,
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Arm32Register.Q15
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};
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public uint GetX(int index)
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{
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if ((uint)index > 15)
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{
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throw new ArgumentOutOfRangeException(nameof(index));
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}
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return GetRegister(XRegisters[index]);
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}
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public void SetX(int index, uint value)
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{
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if ((uint)index > 15)
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{
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throw new ArgumentOutOfRangeException(nameof(index));
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}
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SetRegister(XRegisters[index], value);
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}
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public SimdValue GetQ(int index)
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{
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if ((uint)index > 15)
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{
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throw new ArgumentOutOfRangeException(nameof(index));
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}
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// Getting quadword registers from Unicorn A32 seems to be broken, so we combine its 2 doubleword registers instead.
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return GetVector((Arm32Register)((int)Arm32Register.D0 + index * 2));
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}
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public void SetQ(int index, SimdValue value)
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{
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if ((uint)index > 15)
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{
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throw new ArgumentOutOfRangeException(nameof(index));
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}
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SetVector((Arm32Register)((int)Arm32Register.D0 + index * 2), value);
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}
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public uint GetRegister(Arm32Register register)
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{
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byte[] data = new byte[4];
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Interface.Checked(Native.Interface.uc_reg_read(uc, (int)register, data));
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return (uint)BitConverter.ToInt32(data, 0);
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}
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public void SetRegister(Arm32Register register, uint value)
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{
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byte[] data = BitConverter.GetBytes(value);
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Interface.Checked(Interface.uc_reg_write(uc, (int)register, data));
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}
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public SimdValue GetVector(Arm32Register register)
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{
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byte[] data = new byte[8];
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Interface.Checked(Interface.uc_reg_read(uc, (int)register, data));
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ulong lo = BitConverter.ToUInt64(data, 0);
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Interface.Checked(Interface.uc_reg_read(uc, (int)register + 1, data));
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ulong hi = BitConverter.ToUInt64(data, 0);
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return new SimdValue(lo, hi);
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}
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private void SetVector(Arm32Register register, SimdValue value)
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{
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byte[] data = BitConverter.GetBytes(value.GetUInt64(0));
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Interface.Checked(Interface.uc_reg_write(uc, (int)register, data));
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data = BitConverter.GetBytes(value.GetUInt64(1));
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Interface.Checked(Interface.uc_reg_write(uc, (int)register + 1, data));
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}
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public byte[] MemoryRead(ulong address, ulong size)
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{
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byte[] value = new byte[size];
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Interface.Checked(Interface.uc_mem_read(uc, address, value, size));
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return value;
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}
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public byte MemoryRead8(ulong address) => MemoryRead(address, 1)[0];
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public UInt16 MemoryRead16(ulong address) => (UInt16)BitConverter.ToInt16(MemoryRead(address, 2), 0);
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public UInt32 MemoryRead32(ulong address) => (UInt32)BitConverter.ToInt32(MemoryRead(address, 4), 0);
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public UInt64 MemoryRead64(ulong address) => (UInt64)BitConverter.ToInt64(MemoryRead(address, 8), 0);
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public void MemoryWrite(ulong address, byte[] value)
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{
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Interface.Checked(Interface.uc_mem_write(uc, address, value, (ulong)value.Length));
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}
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public void MemoryWrite8(ulong address, byte value) => MemoryWrite(address, new byte[] { value });
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public void MemoryWrite16(ulong address, Int16 value) => MemoryWrite(address, BitConverter.GetBytes(value));
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public void MemoryWrite16(ulong address, UInt16 value) => MemoryWrite(address, BitConverter.GetBytes(value));
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public void MemoryWrite32(ulong address, Int32 value) => MemoryWrite(address, BitConverter.GetBytes(value));
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public void MemoryWrite32(ulong address, UInt32 value) => MemoryWrite(address, BitConverter.GetBytes(value));
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public void MemoryWrite64(ulong address, Int64 value) => MemoryWrite(address, BitConverter.GetBytes(value));
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public void MemoryWrite64(ulong address, UInt64 value) => MemoryWrite(address, BitConverter.GetBytes(value));
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public void MemoryMap(ulong address, ulong size, MemoryPermission permissions)
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{
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Interface.Checked(Interface.uc_mem_map(uc, address, size, (uint)permissions));
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}
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public void MemoryUnmap(ulong address, ulong size)
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{
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Interface.Checked(Interface.uc_mem_unmap(uc, address, size));
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}
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public void MemoryProtect(ulong address, ulong size, MemoryPermission permissions)
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{
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Interface.Checked(Interface.uc_mem_protect(uc, address, size, (uint)permissions));
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}
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public static bool IsAvailable()
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{
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try
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{
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Interface.uc_version(out _, out _);
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return true;
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}
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catch (DllNotFoundException)
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{
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return false;
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}
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}
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}
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}
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