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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*
     23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 	.file	"abs.s"
     28 
     29 /*
     30  *	Assembler program to implement the following C program
     31  *
     32  *	int
     33  *	abs(int arg)
     34  *	{
     35  *		return((arg < 0)? -arg: arg);
     36  *	}
     37  */
     38 
     39 #include "SYS.h"
     40 
     41 	ENTRY(abs)
     42 	movl	%edi, %eax
     43 	testl	%eax, %eax	/* arg < 0? */
     44 	jns	1f
     45 	negl	%eax		/* yes, return -arg */
     46 1:
     47 	ret
     48 	SET_SIZE(abs)
     49 
     50  	ENTRY(labs)
     51  	movq	%rdi, %rax
     52  	testq	%rax, %rax	/* arg < 0? */
     53  	jns	1f
     54  	negq	%rax		/* yes, return -arg */
     55 1:
     56  	ret
     57  	SET_SIZE(labs)
     58 
     59  	ENTRY(llabs)
     60  	movq	%rdi, %rax
     61  	testq	%rax, %rax	/* arg < 0? */
     62  	jns	1f
     63  	negq	%rax		/* yes, return -arg */
     64 1:
     65  	ret
     66  	SET_SIZE(llabs)
     67