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 */ 461: 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 */ 551: 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 */ 641: 65 ret 66 SET_SIZE(llabs) 67