aload_0.java~3~

来自「Java源码」· JAVA~3~ 代码 · 共 48 行

package AM.vm_impl.instruction;

import AM.am_data_structure.Instruction;
import AM.am_data_structure.AbstractMachineState;
import AM.vm_impl.util.Tracer;
import AM.vm_impl.vm_data_structure.VM_DataArea;
import AM.vm_impl.vm_data_structure.VM_Program;


/**
 * Created by IntelliJ IDEA. User: yellowicq Date: 2004-4-27 Time: 23:27:08
 * To change this template use File | Settings | File Templates.
 */
public class ALOAD_0
    implements Instruction {
    public ALOAD_0() { }

    public String Name() {
        return "aload_0";
    }

    public int NumArguments() {
        return 0;
    }

    public String ToString() {
        return Name();
    }

    public void SI(AbstractMachineState state) {
        Tracer.debug("SI aload_0");
        VM_DataArea VM_da = (VM_DataArea)state.getDataArea();
        VM_Program VM_prog = (VM_Program)state.getProgram();
        // Implementation of allocate semantics
        int tmp1 = ((Object)VM_da.stackFrame.getLocalEntry(0)).intValue();
        VM_da.stackFrame.push(new Integer(tmp1));
        //move the cp pointer to next
        synchronized(this) {
            VM_prog.Next();
            VM_da.regs.setCP_GLOBAL(VM_prog.Consult_CP());
        }
    }

    public void Process(String args[]) {
        // Proces the text representation of the instruction
    }
}