X86FloatRegisters.java

/*
 * Copyright 2002-2003 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *  
 */

/* 
 * Original code for this class taken from the Java HotSpot VM. 
 * Modified for use with the Jakstab project. All modifications 
 * Copyright 2007-2015 Johannes Kinder <jk@jakstab.org>
 */

package org.jakstab.asm.x86;

import org.jakstab.util.Logger;


public class X86FloatRegisters {

	private final static Logger logger = Logger.getLogger(X86FloatRegisters.class);

	public static int getNumRegisters() {
		return NUM_REGISTERS;
	}

	public static X86FloatRegister getRegister(int regNum) {
		if (regNum < 0 || regNum >= NUM_REGISTERS) {
			logger.error("Invalid float register number!");
			return null;
		}
		return registers[regNum];
	}

	public static String getRegisterName(int i) {
		//return "ST(" + i + ")";
		// JK: Changed to SSL style
		return "%st" + i;
	}

	public static final X86FloatRegister ST0;
	public static final X86FloatRegister ST1;
	public static final X86FloatRegister ST2;
	public static final X86FloatRegister ST3;
	public static final X86FloatRegister ST4;
	public static final X86FloatRegister ST5;
	public static final X86FloatRegister ST6;
	public static final X86FloatRegister ST7;

	public static final int NUM_REGISTERS = 8;

	private static final X86FloatRegister registers[];

	static {
		ST0 = new X86FloatRegister(0);
		ST1 = new X86FloatRegister(1);
		ST2 = new X86FloatRegister(2);
		ST3 = new X86FloatRegister(3);
		ST4 = new X86FloatRegister(4);
		ST5 = new X86FloatRegister(5);
		ST6 = new X86FloatRegister(6);
		ST7 = new X86FloatRegister(7);
		registers = (new X86FloatRegister[] {
				ST0, ST1, ST2, ST3, ST4, ST5, ST6, ST7
		});
	}
}