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using System;
using UnicornEngine.Const;
namespace Ryujinx.Tests.Unicorn
{
public class UnicornAArch32 : IDisposable
{
internal readonly UnicornEngine.Unicorn Uc;
private bool _isDisposed;
public IndexedProperty<int, uint> R => new(GetX, SetX);
public IndexedProperty<int, SimdValue> Q => new(GetQ, SetQ);
public uint LR
{
get => GetRegister(Arm.UC_ARM_REG_LR);
set => SetRegister(Arm.UC_ARM_REG_LR, value);
}
public uint SP
{
get => GetRegister(Arm.UC_ARM_REG_SP);
set => SetRegister(Arm.UC_ARM_REG_SP, value);
}
public uint PC
{
get => GetRegister(Arm.UC_ARM_REG_PC) & 0xfffffffeu;
set => SetRegister(Arm.UC_ARM_REG_PC, (value & 0xfffffffeu) | (ThumbFlag ? 1u : 0u));
}
public uint CPSR
{
get => GetRegister(Arm.UC_ARM_REG_CPSR);
set => SetRegister(Arm.UC_ARM_REG_CPSR, value);
}
public int Fpscr
{
get => (int)GetRegister(Arm.UC_ARM_REG_FPSCR) | ((int)GetRegister(Arm.UC_ARM_REG_FPSCR_NZCV));
set => SetRegister(Arm.UC_ARM_REG_FPSCR, (uint)value);
}
public bool QFlag
{
get => (CPSR & 0x8000000u) != 0;
set => CPSR = (CPSR & ~0x8000000u) | (value ? 0x8000000u : 0u);
}
public bool OverflowFlag
{
get => (CPSR & 0x10000000u) != 0;
set => CPSR = (CPSR & ~0x10000000u) | (value ? 0x10000000u : 0u);
}
public bool CarryFlag
{
get => (CPSR & 0x20000000u) != 0;
set => CPSR = (CPSR & ~0x20000000u) | (value ? 0x20000000u : 0u);
}
public bool ZeroFlag
{
get => (CPSR & 0x40000000u) != 0;
set => CPSR = (CPSR & ~0x40000000u) | (value ? 0x40000000u : 0u);
}
public bool NegativeFlag
{
get => (CPSR & 0x80000000u) != 0;
set => CPSR = (CPSR & ~0x80000000u) | (value ? 0x80000000u : 0u);
}
public bool ThumbFlag
{
get => (CPSR & 0x00000020u) != 0;
set
{
CPSR = (CPSR & ~0x00000020u) | (value ? 0x00000020u : 0u);
SetRegister(Arm.UC_ARM_REG_PC, (GetRegister(Arm.UC_ARM_REG_PC) & 0xfffffffeu) | (value ? 1u : 0u));
}
}
public UnicornAArch32()
{
Uc = new UnicornEngine.Unicorn(Common.UC_ARCH_ARM, Common.UC_MODE_LITTLE_ENDIAN);
SetRegister(Arm.UC_ARM_REG_C1_C0_2, GetRegister(Arm.UC_ARM_REG_C1_C0_2) | 0xf00000);
SetRegister(Arm.UC_ARM_REG_FPEXC, 0x40000000);
}
~UnicornAArch32()
{
Dispose(false);
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
protected virtual void Dispose(bool disposing)
{
if (!_isDisposed)
{
Uc.Close();
_isDisposed = true;
}
}
public void RunForCount(ulong count)
{
// FIXME: untilAddr should be 0xFFFFFFFFFFFFFFFFu
Uc.EmuStart(this.PC, -1, 0, (long)count);
}
public void Step()
{
RunForCount(1);
}
private static readonly int[] _xRegisters =
{
Arm.UC_ARM_REG_R0,
Arm.UC_ARM_REG_R1,
Arm.UC_ARM_REG_R2,
Arm.UC_ARM_REG_R3,
Arm.UC_ARM_REG_R4,
Arm.UC_ARM_REG_R5,
Arm.UC_ARM_REG_R6,
Arm.UC_ARM_REG_R7,
Arm.UC_ARM_REG_R8,
Arm.UC_ARM_REG_R9,
Arm.UC_ARM_REG_R10,
Arm.UC_ARM_REG_R11,
Arm.UC_ARM_REG_R12,
Arm.UC_ARM_REG_R13,
Arm.UC_ARM_REG_R14,
Arm.UC_ARM_REG_R15,
};
#pragma warning disable IDE0051, IDE0052 // Remove unused private member
private static readonly int[] _qRegisters =
{
Arm.UC_ARM_REG_Q0,
Arm.UC_ARM_REG_Q1,
Arm.UC_ARM_REG_Q2,
Arm.UC_ARM_REG_Q3,
Arm.UC_ARM_REG_Q4,
Arm.UC_ARM_REG_Q5,
Arm.UC_ARM_REG_Q6,
Arm.UC_ARM_REG_Q7,
Arm.UC_ARM_REG_Q8,
Arm.UC_ARM_REG_Q9,
Arm.UC_ARM_REG_Q10,
Arm.UC_ARM_REG_Q11,
Arm.UC_ARM_REG_Q12,
Arm.UC_ARM_REG_Q13,
Arm.UC_ARM_REG_Q14,
Arm.UC_ARM_REG_Q15,
};
#pragma warning restore IDE0051, IDE0052
public uint GetX(int index)
{
if ((uint)index > 15)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
return GetRegister(_xRegisters[index]);
}
public void SetX(int index, uint value)
{
if ((uint)index > 15)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
SetRegister(_xRegisters[index], value);
}
public SimdValue GetQ(int index)
{
if ((uint)index > 15)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
// Getting quadword registers from Unicorn A32 seems to be broken, so we combine its 2 doubleword registers instead.
return GetVector(Arm.UC_ARM_REG_D0 + index * 2);
}
public void SetQ(int index, SimdValue value)
{
if ((uint)index > 15)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
SetVector(Arm.UC_ARM_REG_D0 + index * 2, value);
}
public uint GetRegister(int register)
{
byte[] data = new byte[4];
Uc.RegRead(register, data);
return BitConverter.ToUInt32(data, 0);
}
public void SetRegister(int register, uint value)
{
byte[] data = BitConverter.GetBytes(value);
Uc.RegWrite(register, data);
}
public SimdValue GetVector(int register)
{
byte[] data = new byte[8];
Uc.RegRead(register, data);
ulong lo = BitConverter.ToUInt64(data, 0);
Uc.RegRead(register + 1, data);
ulong hi = BitConverter.ToUInt64(data, 0);
return new SimdValue(lo, hi);
}
private void SetVector(int register, SimdValue value)
{
byte[] data = BitConverter.GetBytes(value.GetUInt64(0));
Uc.RegWrite(register, data);
data = BitConverter.GetBytes(value.GetUInt64(1));
Uc.RegWrite(register + 1, data);
}
public byte[] MemoryRead(ulong address, ulong size)
{
byte[] value = new byte[size];
Uc.MemRead((long)address, value);
return value;
}
public byte MemoryRead8(ulong address) => MemoryRead(address, 1)[0];
public ushort MemoryRead16(ulong address) => BitConverter.ToUInt16(MemoryRead(address, 2), 0);
public uint MemoryRead32(ulong address) => BitConverter.ToUInt32(MemoryRead(address, 4), 0);
public ulong MemoryRead64(ulong address) => BitConverter.ToUInt64(MemoryRead(address, 8), 0);
public void MemoryWrite(ulong address, byte[] value)
{
Uc.MemWrite((long)address, value);
}
public void MemoryWrite8(ulong address, byte value) => MemoryWrite(address, new[] { value });
public void MemoryWrite16(ulong address, short value) => MemoryWrite(address, BitConverter.GetBytes(value));
public void MemoryWrite16(ulong address, ushort value) => MemoryWrite(address, BitConverter.GetBytes(value));
public void MemoryWrite32(ulong address, int value) => MemoryWrite(address, BitConverter.GetBytes(value));
public void MemoryWrite32(ulong address, uint value) => MemoryWrite(address, BitConverter.GetBytes(value));
public void MemoryWrite64(ulong address, long value) => MemoryWrite(address, BitConverter.GetBytes(value));
public void MemoryWrite64(ulong address, ulong value) => MemoryWrite(address, BitConverter.GetBytes(value));
public void MemoryMap(ulong address, ulong size, MemoryPermission permissions)
{
Uc.MemMap((long)address, (long)size, (int)permissions);
}
public void MemoryUnmap(ulong address, ulong size)
{
Uc.MemUnmap((long)address, (long)size);
}
public void MemoryProtect(ulong address, ulong size, MemoryPermission permissions)
{
Uc.MemProtect((long)address, (long)size, (int)permissions);
}
}
}
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