public CmdBase GetCmd(string instruction, CmdInfo info, string label)
{
//lw $t2,0($s2)
var split = instruction.Split(' ');
var regSplit = split[1].Split(',');
int rt = Register.Translate(regSplit[0]);
if (instruction.Contains("("))
{
int posBOpen = 0;
int posBClose = 0;
var chars = regSplit[1].ToCharArray();
for (int i = 0; i < chars.Length; i++)
{
if (chars[i] == '(') posBOpen = i;
if (chars[i] == ')') posBClose = i;
}
string num = regSplit[1].Substring(0, posBOpen);
int value = Convert.ToInt32(num);
string bracket = regSplit[1].Substring(posBOpen + 1, posBClose - (posBOpen + 1));
int rs = Register.Translate(bracket);
return new CmdLW(info, (byte)rs, (byte)rt, (short)value,"", label);
}
//lw $s3, n # n in $s3 laden
//pseudo instruct
return new CmdLW(info, 0, (byte)rt, 0, split[2], label);
}
public CmdBase GetCmd(string instruction, CmdInfo info, string label)
{
//add $t7,$t3,$s0
var split = instruction.Split(' ');
var regSplit = split[1].Split(',');
int rd = Register.Translate(regSplit[0]);
int rt = Register.Translate(regSplit[1]);
int shift = Convert.ToInt32(regSplit[2]);
CmdR cmd = new CmdShift(info, 0, (byte)rt, (byte)rd, (byte)shift, info.funct, label);
return cmd;
}
public CmdBase GetCmd(string instruction, CmdInfo info, string label)
{
//generic
//addi $s1,$s1,4
//lw $t2,0($s2)
//bne $t3,$zero,nimm2
var split = instruction.Split(' ');
var regSplit = split[1].Split(',');
int rd = Register.Translate(regSplit[0]);
int rs = Register.Translate(regSplit[1]);
string jumpLabel = regSplit[2];
CmdI cmd = new CmdBranch(info, (byte)rs, (byte)rd, jumpLabel, label);
return cmd;
}
public CmdBase GetCmd(string instruction, CmdInfo info, string label)
{
//specials
switch (info.name)
{
case "la":
case "lw":
case "sw":
return new FormatLW().GetCmd(instruction, info, label);
case "beq":
case "bne":
return new FormatBeq().GetCmd(instruction, info, label);
};
//generic
//addi $s1,$s1,4
//lw $t2,0($s2)
//bne $t3,$zero,nimm2
var split = instruction.Split(' ');
var regSplit = split[1].Split(',');
int rd = Register.Translate(regSplit[0]);
int rs = Register.Translate(regSplit[1]);
int value = Convert.ToInt32(regSplit[2]);
CmdI cmd;
switch (info.name)
{
case "addi":
cmd = new CmdAddi(info, (byte)rs, (byte)rd, (short)value, label);
break;
default:
cmd = new CmdI(info, (byte)rs, (byte)rd, (short)value, label);
break;
}
return cmd;
}
public CmdBase GetCmd(string instruction, CmdInfo info, string label)
{
//specials
switch (info.name)
{
case "sll":
case "srl":
case "sra":
return new FormatShift().GetCmd(instruction, info, label);
}
//generic
//add $t7,$t3,$s0
var split = instruction.Split(' ');
var regSplit = split[1].Split(',');
int rd = Register.Translate(regSplit[0]);
int rs = Register.Translate(regSplit[1]);
int rt = Register.Translate(regSplit[2]);
CmdR cmd;
switch (info.name)
{
case "add":
case "sub":
cmd = new CmdAddR(info, (byte)rs, (byte)rt, (byte)rd, 0, info.funct, label);
break;
case "slt":
cmd = new CmdSlt(info, (byte)rs, (byte)rt, (byte)rd, 0, info.funct, label);
break;
default:
cmd = new CmdR(info, (byte)rs, (byte)rt, (byte)rd, 0, info.funct, label);
break;
}
return cmd;
}
public CmdBase GetCmd(string instruction, CmdInfo info, string label)
{
var split = instruction.Split(' ');
CmdJ cmd = new CmdJ(info, split[1], label);
return cmd;
}
