sparchiop.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 62 行

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

package java6035.tools.ASM;

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

public class SPARCHiOp extends SPARCImmed
{
    protected int sparc_op_kind() { return SPARCIMMED; }
	
    public String toString()
    {
		if(lab!=null)
		{
			return new String("%hi("+ lab + ")");
		}
		else
			return new String("%hi("+ value + ")");
    }

    /** the label */
    private String lab=null;
 	private long value;
	
    /**
     * Creates a new %hi operand with label as parameter
     **/
    public SPARCHiOp(ASMLabel label)
    {
		super(0);
		this.lab = label.toString();
	}
	
	 /**
     * Creates a new %hi operand with the intger (immediate) as parameter
     **/
	public SPARCHiOp(long a)
    {
		super(0);
		this.lab = null;
		this.value = a;
    }
	
    public boolean equals(Object o)
    {
		if (o instanceof SPARCHiOp &&
			(lab.toString()).equals(((SPARCHiOp)o).toString()))
		    return true;
		return false;
    }

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