public override void run(ref Register[] reg, ref Memory RAM)
{
//base.run(ref reg, ref RAM);
Logger.Instance.writeLog(string.Format("CMD: Data Movement : 0x{0}", Convert.ToString(this.originalBits, 16)));
//from register info to memory!!!
// --->
uint RdValue = reg[this.rd].ReadWord(0, true);
uint RnValue = reg[this.rn].ReadWord(0, true);
uint RmValue = reg[this.rm].ReadWord(0, true);
this.shiftOp = loadStoreShift(this.R, this.shiftOp, RmValue, reg);
//addressing mode
uint addr = figureOutAddressing(ref reg);
string cmd = "";
if (this.L)
{
cmd = "ldr";
if (this.B)
{
byte inpu = RAM.ReadByte(addr);
//clear it out first
reg[this.rd].WriteWord(0, 0);
reg[this.rd].WriteByte(0, inpu);
}
else
{
uint inpu = RAM.ReadWord(addr);
reg[this.rd].WriteWord(0, inpu);
}
}
else
{
cmd = "str";
if (this.B)
{
byte inpu = reg[this.rd].ReadByte(0);
RAM.WriteByte(addr, inpu);
}
else
{
RAM.WriteWord(addr, RdValue);
}
}
Logger.Instance.writeLog(string.Format("CMD: {0} {1}, 0x{2} : 0x{3} ", cmd, RdValue,
Convert.ToString(addr, 16), Convert.ToString(this.originalBits, 16).Replace("__", condStr)));
}
public ShifterOperand loadStoreShift(bool R, ShifterOperand shiftOp, uint RmValue, Register[] reg)
{
if (R)
{
//it's a register
shiftOp = figureOutShift(!R, shiftOp, RmValue, reg);
}
else
{
//it's an immediate 12 bit value
shiftOp.offset = shiftOp.immed_12;
}
return(shiftOp);
}
public ShifterOperand figureOutShift(bool I, ShifterOperand shiftOp, uint RmVal, Register[] reg)
{
if (!I)
{
//it's a register!
if (shiftOp.bit4 && !shiftOp.bit7)
{
//shifted by a register!
shiftOp.shiftRM(RmVal, reg[shiftOp.Rs].ReadWord(0, true));
}
else
{
//shifted by an immediate value!
shiftOp.shiftRM(RmVal, shiftOp.shift_imm);
}
}
return(shiftOp);
}
public override void parse(Memory command)
{
//PUBWL
bool R = command.TestFlag(0, 25);
rm = (command.ReadWord(0) & 0x0000000F);
this.shiftOp = new ShifterOperand(command);
if (!(command.TestFlag(0, 25) && command.TestFlag(0, 4)))
{
this.R = command.TestFlag(0, 25);
this.P = command.TestFlag(0, 24);
this.U = command.TestFlag(0, 23);
this.B = command.TestFlag(0, 22);
this.W = command.TestFlag(0, 21);
this.L = command.TestFlag(0, 20);
}
}
