diff options
Diffstat (limited to 'src/Ryujinx.Tests.Unicorn/UnicornAArch32.cs')
| -rw-r--r-- | src/Ryujinx.Tests.Unicorn/UnicornAArch32.cs | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/src/Ryujinx.Tests.Unicorn/UnicornAArch32.cs b/src/Ryujinx.Tests.Unicorn/UnicornAArch32.cs new file mode 100644 index 00000000..a095e664 --- /dev/null +++ b/src/Ryujinx.Tests.Unicorn/UnicornAArch32.cs @@ -0,0 +1,283 @@ +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 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, + }; + + private static 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 + }; + + 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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