strchr.s revision 2
1N/A * The contents of this file are subject to the terms of the 1N/A * Common Development and Distribution License (the "License"). 1N/A * You may not use this file except in compliance with the License. 1N/A * See the License for the specific language governing permissions 1N/A * and limitations under the License. 1N/A * When distributing Covered Code, include this CDDL HEADER in each 1N/A * If applicable, add the following below this CDDL HEADER, with the 1N/A * fields enclosed by brackets "[]" replaced with your own identifying 1N/A * information: Portions Copyright [yyyy] [name of copyright owner] 1N/A * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 1N/A * Use is subject to license terms. 1N/A test $0x0000ff00, %ecx 1N/A test $0x00ff0000, %ecx 1N/A add $0x01010101, %ecx / restore registers here 1N/A cmpb %dl, %cl / check for character 1N/A testb %cl, %cl / check for null byte 1N/A cmpb %dh, %ch / continue checking for char, null 1N/A shr $16, %ecx / put bytes 2,3 into 8-but registers 1N/A cmpb %dh, %ch / repeat checking last 2 bytes 1N/A sub $1, %eax / correct for last loop iteration