public static void Movmm(Cpu cpu, uint rX, uint rY)
{
var vAddr = cpu.Registers[rY];
var value = cpu.Read(vAddr);
vAddr = cpu.Registers[rX];
cpu.Write(vAddr, value);
}
public static void Popm(Cpu cpu, uint rX)
{
var value = cpu.Pop();
var vAddr = cpu.Registers[rX];
cpu.Write(vAddr, value);
}
public static void MapShared(Cpu cpu, uint rX, uint rY)
{
var vAddr = cpu.Registers[rX];
var count = cpu.Registers[rY];
while (--count > 0)
{
cpu.Write(vAddr, 0);
vAddr += 4;
}
}
private static void WriteValue(Cpu cpu, OpCodeFlag flag, uint param, uint value)
{
switch (flag)
{
case OpCodeFlag.Register:
cpu.Registers[param] = value;
break;
case OpCodeFlag.MemoryAddress:
cpu.Write(cpu.Registers[param], value);
break;
default:
throw new ArgumentOutOfRangeException(nameof(flag));
}
}
public static void Movrm(Cpu cpu, uint rX, uint rY)
{
var vAddr = cpu.Registers[rX];
cpu.Write(vAddr, cpu.Registers[rY]);
}
public static void Popm(Cpu cpu, uint rX)
{
var value = cpu.Pop();
var vAddr = cpu.Registers[rX];
cpu.Write(vAddr, value);
}
public static void Movrm(Cpu cpu, uint rX, uint rY)
{
var vAddr = cpu.Registers[rX];
cpu.Write(vAddr, cpu.Registers[rY]);
}
public static void Movmm(Cpu cpu, uint rX, uint rY)
{
var vAddr = cpu.Registers[rY];
var value = cpu.Read(vAddr);
vAddr = cpu.Registers[rX];
cpu.Write(vAddr, value);
}
public static void MapShared(Cpu cpu, uint rX, uint rY)
{
var vAddr = cpu.Registers[rX];
var count = cpu.Registers[rY];
while (--count > 0)
{
cpu.Write(vAddr, 0);
vAddr += 4;
}
}
private static void WriteValue(Cpu cpu, OpCodeFlag flag, uint param, uint value)
{
switch (flag)
{
case OpCodeFlag.Register:
cpu.Registers[param] = value;
break;
case OpCodeFlag.MemoryAddress:
cpu.Write(cpu.Registers[param], value);
break;
default:
throw new ArgumentOutOfRangeException(nameof(flag));
}
}