public override void Assemble(CodeGenerator cgen, Instruction ins, BytecodeStream str)
{
if (ins.Operands.Count != 1)
{
cgen.CreateError("Instruction {0} does not take {1} operand(s)!", ins.Name, ins.Operands.Count);
}
else if (ins.Operands[0] is TokenIdentifier)
{
TokenIdentifier label = ins.Operands[0] as TokenIdentifier;
QuasarConditionCode code = QuasarConditionCode.NONE;
switch (ins.Name)
{
case "bc":
code = QuasarConditionCode.C;
break;
case "bs":
code = QuasarConditionCode.N;
break;
case "bv":
code = QuasarConditionCode.V;
break;
case "bz":
code = QuasarConditionCode.Z;
break;
case "be":
code = QuasarConditionCode.EQ;
break;
case "bne":
code = QuasarConditionCode.NE;
break;
case "ba":
code = QuasarConditionCode.AB;
break;
case "bb":
code = QuasarConditionCode.BL;
break;
case "bl":
code = QuasarConditionCode.LT;
break;
case "bg":
code = QuasarConditionCode.GT;
break;
case "ble":
code = QuasarConditionCode.LE;
break;
case "bge":
code = QuasarConditionCode.GE;
break;
}
str.Emit(new QuasarInstruction(Opcode.BR, new ConditionCodeOperand(code), new SymbolReferenceOperand(label.Value, true)));
}
}
public ConditionCodeOperand(QuasarConditionCode code)
{
this.condition = (int)code;
}
