| public abstract Write ( bool fExplicit, MachineInstructionWriter writer ) : void | ||
| fExplicit | bool | |
| writer | MachineInstructionWriter | |
| Résultat | void | |
protected virtual void RenderOperand(MachineOperand operand, MachineInstructionWriter writer, MachineInstructionWriterOptions options)
{
operand.Write(writer, options);
}
public void Write(MachineOperand op, MachineInstructionWriter writer)
{
var imm = op as ImmediateOperand;
if (imm != null)
{
writer.Write("#");
int imm8 = imm.Value.ToInt32();
if (imm8 > 256 && ((imm8 & (imm8 - 1)) == 0))
{
/* only one bit set, and that later than bit 8.
* Represent as 1<<... .
*/
writer.Write("1<<");
{
uint n = 0;
while ((imm8 & 15) == 0)
{
n += 4; imm8 = imm8 >> 4;
}
// Now imm8 is 1, 2, 4 or 8.
n += (uint)((0x30002010 >> (int)(4 * (imm8 - 1))) & 15);
writer.Write(n);
}
}
else
{
var fmt = (-9 <= imm8 && imm8 <= 9) ? "{0}{1}" : "&{0}{1:X}";
var sign = "";
if (((int)imm8) < 0 && ((int)imm8) > -100)
{
imm8 = -imm8;
sign = "-";
}
writer.Write(fmt,sign,imm8);
}
return;
}
var adr = op as AddressOperand;
if (adr != null)
{
adr.Write(false, writer);
return;
}
var mem = op as ArmMemoryOperand;
if (mem != null)
{
mem.Write(false, writer);
return;
}
var sh = op as ShiftOperand;
if (sh != null)
{
sh.Write(false, writer);
return;
}
if (op == null)
writer.Write("<null>");
else
op.Write(false, writer);
}
