Strncpy.java

/*
This file is part of jpcsp.

Jpcsp is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Jpcsp 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 for more details.

You should have received a copy of the GNU General Public License
along with Jpcsp.  If not, see <http://www.gnu.org/licenses/>.
 */
package jpcsp.Allegrex.compiler.nativeCode;

/**
 * @author gid15
 *
 */
public class Strncpy extends AbstractNativeCodeSequence {
	static public void call() {
		int dstAddr = getGprA0();
		int srcAddr = getGprA1();
		int n = getGprA2();

		int srcLength = getStrlen(srcAddr);
		if (srcLength < n) {
			getMemory().memcpy(dstAddr, srcAddr, srcLength + 1);
			getMemory().memset(dstAddr + srcLength + 1, (byte) 0, n - srcLength - 1);
		} else {
			getMemory().memcpy(dstAddr, srcAddr, n);
		}

		setGprV0(dstAddr);
	}
}