sparcloop.java

来自「用Java实现的编译器。把源代码编译成SPARC汇编程序」· Java 代码 · 共 60 行

// $Id: SPARCImmed.java,v 1.5 2000/10/21 23:18:10 mdeeds Exp $

package java6035.tools.ASM;

/**
 * SPARCLoOp is a representation for the
 * %lo operator, which takes in a label as a parameter.
 * 
 */

public class SPARCLoOp extends SPARCImmed
{
    protected int sparc_op_kind() { return SPARCIMMED; }

    public String toString()
    {
		if (lab!=null)
			return new String("%lo("+ lab + ")");
		else
			return new String("%lo("+ value + ")");
    }

    /** the label */
    private String lab=null;
 	private long value;
	
    /**
     * Creates a %lo operator with label as the argument
     **/
    public SPARCLoOp(ASMLabel label)
    {
		super(0);
		this.lab = label.toString();
    }
	
	/**
     * Creates a %lo operator with label as the argument
     **/
    public SPARCLoOp(long a)
    {
		super(0);
		this.lab = null;
		this.value = a;
    }

    public boolean equals(Object o)
    {
	if (o instanceof SPARCLoOp &&
		(lab.toString()).equals(((SPARCHiOp)o).toString()))
	    return true;
	return false;
    }

    public int hashCode() {
	return (int)(this.value);
    }
}