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using System;
using System.Diagnostics.Contracts;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;
namespace Ryujinx.Tests.Unicorn
{
public class UnicornAArch64
{
internal readonly IntPtr uc;
public IndexedProperty<int, ulong> X
{
get
{
return new IndexedProperty<int, ulong>(
(int i) => GetX(i),
(int i, ulong value) => SetX(i, value));
}
}
public IndexedProperty<int, Vector128<float>> Q
{
get
{
return new IndexedProperty<int, Vector128<float>>(
(int i) => GetQ(i),
(int i, Vector128<float> value) => SetQ(i, value));
}
}
public ulong LR
{
get { return GetRegister(Native.ArmRegister.LR); }
set { SetRegister(Native.ArmRegister.LR, value); }
}
public ulong SP
{
get { return GetRegister(Native.ArmRegister.SP); }
set { SetRegister(Native.ArmRegister.SP, value); }
}
public ulong PC
{
get { return GetRegister(Native.ArmRegister.PC); }
set { SetRegister(Native.ArmRegister.PC, value); }
}
public uint Pstate
{
get { return (uint)GetRegister(Native.ArmRegister.PSTATE); }
set { SetRegister(Native.ArmRegister.PSTATE, (uint)value); }
}
public int Fpcr
{
get { return (int)GetRegister(Native.ArmRegister.FPCR); }
set { SetRegister(Native.ArmRegister.FPCR, (uint)value); }
}
public int Fpsr
{
get { return (int)GetRegister(Native.ArmRegister.FPSR); }
set { SetRegister(Native.ArmRegister.FPSR, (uint)value); }
}
public bool OverflowFlag
{
get { return (Pstate & 0x10000000u) != 0; }
set { Pstate = (Pstate & ~0x10000000u) | (value ? 0x10000000u : 0u); }
}
public bool CarryFlag
{
get { return (Pstate & 0x20000000u) != 0; }
set { Pstate = (Pstate & ~0x20000000u) | (value ? 0x20000000u : 0u); }
}
public bool ZeroFlag
{
get { return (Pstate & 0x40000000u) != 0; }
set { Pstate = (Pstate & ~0x40000000u) | (value ? 0x40000000u : 0u); }
}
public bool NegativeFlag
{
get { return (Pstate & 0x80000000u) != 0; }
set { Pstate = (Pstate & ~0x80000000u) | (value ? 0x80000000u : 0u); }
}
public UnicornAArch64()
{
Native.Interface.Checked(Native.Interface.uc_open((uint)Native.UnicornArch.UC_ARCH_ARM64, (uint)Native.UnicornMode.UC_MODE_LITTLE_ENDIAN, out uc));
SetRegister(Native.ArmRegister.CPACR_EL1, 0x00300000);
}
~UnicornAArch64()
{
Native.Interface.Checked(Native.Interface.uc_close(uc));
}
public void RunForCount(ulong count)
{
Native.Interface.Checked(Native.Interface.uc_emu_start(uc, this.PC, 0xFFFFFFFFFFFFFFFFu, 0, count));
}
public void Step()
{
RunForCount(1);
}
internal static Native.ArmRegister[] X_registers = new Native.ArmRegister[31]
{
Native.ArmRegister.X0,
Native.ArmRegister.X1,
Native.ArmRegister.X2,
Native.ArmRegister.X3,
Native.ArmRegister.X4,
Native.ArmRegister.X5,
Native.ArmRegister.X6,
Native.ArmRegister.X7,
Native.ArmRegister.X8,
Native.ArmRegister.X9,
Native.ArmRegister.X10,
Native.ArmRegister.X11,
Native.ArmRegister.X12,
Native.ArmRegister.X13,
Native.ArmRegister.X14,
Native.ArmRegister.X15,
Native.ArmRegister.X16,
Native.ArmRegister.X17,
Native.ArmRegister.X18,
Native.ArmRegister.X19,
Native.ArmRegister.X20,
Native.ArmRegister.X21,
Native.ArmRegister.X22,
Native.ArmRegister.X23,
Native.ArmRegister.X24,
Native.ArmRegister.X25,
Native.ArmRegister.X26,
Native.ArmRegister.X27,
Native.ArmRegister.X28,
Native.ArmRegister.X29,
Native.ArmRegister.X30,
};
internal static Native.ArmRegister[] Q_registers = new Native.ArmRegister[32]
{
Native.ArmRegister.Q0,
Native.ArmRegister.Q1,
Native.ArmRegister.Q2,
Native.ArmRegister.Q3,
Native.ArmRegister.Q4,
Native.ArmRegister.Q5,
Native.ArmRegister.Q6,
Native.ArmRegister.Q7,
Native.ArmRegister.Q8,
Native.ArmRegister.Q9,
Native.ArmRegister.Q10,
Native.ArmRegister.Q11,
Native.ArmRegister.Q12,
Native.ArmRegister.Q13,
Native.ArmRegister.Q14,
Native.ArmRegister.Q15,
Native.ArmRegister.Q16,
Native.ArmRegister.Q17,
Native.ArmRegister.Q18,
Native.ArmRegister.Q19,
Native.ArmRegister.Q20,
Native.ArmRegister.Q21,
Native.ArmRegister.Q22,
Native.ArmRegister.Q23,
Native.ArmRegister.Q24,
Native.ArmRegister.Q25,
Native.ArmRegister.Q26,
Native.ArmRegister.Q27,
Native.ArmRegister.Q28,
Native.ArmRegister.Q29,
Native.ArmRegister.Q30,
Native.ArmRegister.Q31,
};
internal ulong GetRegister(Native.ArmRegister register)
{
byte[] value_bytes = new byte[8];
Native.Interface.Checked(Native.Interface.uc_reg_read(uc, (int)register, value_bytes));
return (ulong)BitConverter.ToInt64(value_bytes, 0);
}
internal void SetRegister(Native.ArmRegister register, ulong value)
{
byte[] value_bytes = BitConverter.GetBytes(value);
Native.Interface.Checked(Native.Interface.uc_reg_write(uc, (int)register, value_bytes));
}
internal Vector128<float> GetVector(Native.ArmRegister register)
{
byte[] value_bytes = new byte[16];
Native.Interface.Checked(Native.Interface.uc_reg_read(uc, (int)register, value_bytes));
unsafe
{
fixed (byte* p = &value_bytes[0])
{
return Sse.LoadVector128((float*)p);
}
}
}
internal void SetVector(Native.ArmRegister register, Vector128<float> value)
{
byte[] value_bytes = new byte[16];
unsafe
{
fixed (byte* p = &value_bytes[0])
{
Sse.Store((float*)p, value);
}
}
Native.Interface.Checked(Native.Interface.uc_reg_write(uc, (int)register, value_bytes));
}
public ulong GetX(int index)
{
Contract.Requires(index <= 30, "invalid register");
return GetRegister(X_registers[index]);
}
public void SetX(int index, ulong value)
{
Contract.Requires(index <= 30, "invalid register");
SetRegister(X_registers[index], value);
}
public Vector128<float> GetQ(int index)
{
Contract.Requires(index <= 31, "invalid vector");
return GetVector(Q_registers[index]);
}
public void SetQ(int index, Vector128<float> value)
{
Contract.Requires(index <= 31, "invalid vector");
SetVector(Q_registers[index], value);
}
public byte[] MemoryRead(ulong address, ulong size)
{
byte[] value = new byte[size];
Native.Interface.Checked(Native.Interface.uc_mem_read(uc, address, value, size));
return value;
}
public byte MemoryRead8 (ulong address) { return MemoryRead(address, 1)[0]; }
public UInt16 MemoryRead16(ulong address) { return (UInt16)BitConverter.ToInt16(MemoryRead(address, 2), 0); }
public UInt32 MemoryRead32(ulong address) { return (UInt32)BitConverter.ToInt32(MemoryRead(address, 4), 0); }
public UInt64 MemoryRead64(ulong address) { return (UInt64)BitConverter.ToInt64(MemoryRead(address, 8), 0); }
public void MemoryWrite(ulong address, byte[] value)
{
Native.Interface.Checked(Native.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)
{
Native.Interface.Checked(Native.Interface.uc_mem_map(uc, address, size, (uint)permissions));
}
public void MemoryUnmap(ulong address, ulong size)
{
Native.Interface.Checked(Native.Interface.uc_mem_unmap(uc, address, size));
}
public void MemoryProtect(ulong address, ulong size, MemoryPermission permissions)
{
Native.Interface.Checked(Native.Interface.uc_mem_protect(uc, address, size, (uint)permissions));
}
public void DumpMemoryInformation()
{
Native.Interface.Checked(Native.Interface.uc_mem_regions(uc, out IntPtr regions_raw, out uint length));
Native.Interface.MarshalArrayOf<Native.UnicornMemoryRegion>(regions_raw, (int)length, out var regions);
foreach (var region in regions)
{
Console.WriteLine("region: begin {0:X16} end {1:X16} perms {2:X8}", region.begin, region.end, region.perms);
}
}
public static bool IsAvailable()
{
try
{
Native.Interface.uc_version(out uint major, out uint minor);
return true;
}
catch (DllNotFoundException)
{
return false;
}
}
}
}
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