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Ryujinx/Ryujinx.Tests.Unicorn/UnicornAArch32.cs
gdkchan fb0939f9b6
Add SSAT, SSAT16, USAT and USAT16 ARM32 instructions (#954)
* Implement SMULWB, SMULWT, SMLAWB, SMLAWT, and add tests for some multiply instructions

* Improve test descriptions

* Rename SMULH to SMUL__

* Add SSAT, SSAT16, USAT and USAT16 ARM32 instructions

* Fix new tests

* Replace AND 0xFFFF with 16-bits zero extension (more efficient)
2020-03-01 07:51:55 +11:00

286 lines
9 KiB
C#

using Ryujinx.Tests.Unicorn.Native;
using System;
namespace Ryujinx.Tests.Unicorn
{
public class UnicornAArch32
{
internal readonly IntPtr uc;
public IndexedProperty<int, uint> R
{
get
{
return new IndexedProperty<int, uint>(
(int i) => GetX(i),
(int i, uint value) => SetX(i, value));
}
}
public IndexedProperty<int, SimdValue> Q
{
get
{
return new IndexedProperty<int, SimdValue>(
(int i) => GetQ(i),
(int i, SimdValue value) => SetQ(i, value));
}
}
public uint LR
{
get => GetRegister(Arm32Register.LR);
set => SetRegister(Arm32Register.LR, value);
}
public uint SP
{
get => GetRegister(Arm32Register.SP);
set => SetRegister(Arm32Register.SP, value);
}
public uint PC
{
get => GetRegister(Arm32Register.PC);
set => SetRegister(Arm32Register.PC, value);
}
public uint CPSR
{
get => (uint)GetRegister(Arm32Register.CPSR);
set => SetRegister(Arm32Register.CPSR, (uint)value);
}
public int Fpscr
{
get => (int)GetRegister(Arm32Register.FPSCR) | ((int)GetRegister(Arm32Register.FPSCR_NZCV));
set => SetRegister(Arm32Register.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 UnicornAArch32()
{
Interface.Checked(Interface.uc_open(UnicornArch.UC_ARCH_ARM, UnicornMode.UC_MODE_LITTLE_ENDIAN, out uc));
SetRegister(Arm32Register.C1_C0_2, GetRegister(Arm32Register.C1_C0_2) | 0xf00000);
SetRegister(Arm32Register.FPEXC, 0x40000000);
}
~UnicornAArch32()
{
Interface.Checked(Native.Interface.uc_close(uc));
}
public void RunForCount(ulong count)
{
Interface.Checked(Native.Interface.uc_emu_start(uc, this.PC, 0xFFFFFFFFFFFFFFFFu, 0, count));
}
public void Step()
{
RunForCount(1);
}
private static Arm32Register[] XRegisters = new Arm32Register[16]
{
Arm32Register.R0,
Arm32Register.R1,
Arm32Register.R2,
Arm32Register.R3,
Arm32Register.R4,
Arm32Register.R5,
Arm32Register.R6,
Arm32Register.R7,
Arm32Register.R8,
Arm32Register.R9,
Arm32Register.R10,
Arm32Register.R11,
Arm32Register.R12,
Arm32Register.R13,
Arm32Register.R14,
Arm32Register.R15,
};
private static Arm32Register[] QRegisters = new Arm32Register[16]
{
Arm32Register.Q0,
Arm32Register.Q1,
Arm32Register.Q2,
Arm32Register.Q3,
Arm32Register.Q4,
Arm32Register.Q5,
Arm32Register.Q6,
Arm32Register.Q7,
Arm32Register.Q8,
Arm32Register.Q9,
Arm32Register.Q10,
Arm32Register.Q11,
Arm32Register.Q12,
Arm32Register.Q13,
Arm32Register.Q14,
Arm32Register.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((Arm32Register)((int)Arm32Register.D0 + index * 2));
}
public void SetQ(int index, SimdValue value)
{
if ((uint)index > 15)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
SetVector((Arm32Register)((int)Arm32Register.D0 + index * 2), value);
}
public uint GetRegister(Arm32Register register)
{
byte[] data = new byte[4];
Interface.Checked(Native.Interface.uc_reg_read(uc, (int)register, data));
return (uint)BitConverter.ToInt32(data, 0);
}
public void SetRegister(Arm32Register register, uint value)
{
byte[] data = BitConverter.GetBytes(value);
Interface.Checked(Interface.uc_reg_write(uc, (int)register, data));
}
public SimdValue GetVector(Arm32Register register)
{
byte[] data = new byte[8];
Interface.Checked(Interface.uc_reg_read(uc, (int)register, data));
ulong lo = BitConverter.ToUInt64(data, 0);
Interface.Checked(Interface.uc_reg_read(uc, (int)register + 1, data));
ulong hi = BitConverter.ToUInt64(data, 0);
return new SimdValue(lo, hi);
}
private void SetVector(Arm32Register register, SimdValue value)
{
byte[] data = BitConverter.GetBytes(value.GetUInt64(0));
Interface.Checked(Interface.uc_reg_write(uc, (int)register, data));
data = BitConverter.GetBytes(value.GetUInt64(1));
Interface.Checked(Interface.uc_reg_write(uc, (int)register + 1, data));
}
public byte[] MemoryRead(ulong address, ulong size)
{
byte[] value = new byte[size];
Interface.Checked(Interface.uc_mem_read(uc, address, value, size));
return value;
}
public byte MemoryRead8(ulong address) => MemoryRead(address, 1)[0];
public UInt16 MemoryRead16(ulong address) => (UInt16)BitConverter.ToInt16(MemoryRead(address, 2), 0);
public UInt32 MemoryRead32(ulong address) => (UInt32)BitConverter.ToInt32(MemoryRead(address, 4), 0);
public UInt64 MemoryRead64(ulong address) => (UInt64)BitConverter.ToInt64(MemoryRead(address, 8), 0);
public void MemoryWrite(ulong address, byte[] value)
{
Interface.Checked(Interface.uc_mem_write(uc, address, value, (ulong)value.Length));
}
public void MemoryWrite8(ulong address, byte value) => MemoryWrite(address, new byte[] { value });
public void MemoryWrite16(ulong address, Int16 value) => MemoryWrite(address, BitConverter.GetBytes(value));
public void MemoryWrite16(ulong address, UInt16 value) => MemoryWrite(address, BitConverter.GetBytes(value));
public void MemoryWrite32(ulong address, Int32 value) => MemoryWrite(address, BitConverter.GetBytes(value));
public void MemoryWrite32(ulong address, UInt32 value) => MemoryWrite(address, BitConverter.GetBytes(value));
public void MemoryWrite64(ulong address, Int64 value) => MemoryWrite(address, BitConverter.GetBytes(value));
public void MemoryWrite64(ulong address, UInt64 value) => MemoryWrite(address, BitConverter.GetBytes(value));
public void MemoryMap(ulong address, ulong size, MemoryPermission permissions)
{
Interface.Checked(Interface.uc_mem_map(uc, address, size, (uint)permissions));
}
public void MemoryUnmap(ulong address, ulong size)
{
Interface.Checked(Interface.uc_mem_unmap(uc, address, size));
}
public void MemoryProtect(ulong address, ulong size, MemoryPermission permissions)
{
Interface.Checked(Interface.uc_mem_protect(uc, address, size, (uint)permissions));
}
public static bool IsAvailable()
{
try
{
Interface.uc_version(out _, out _);
return true;
}
catch (DllNotFoundException)
{
return false;
}
}
}
}