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 "wslen.s" 28 29/* 30 * Wide character wcslen() implementation 31 * 32 * size_t 33 * wcslen(const wchar_t *s) 34 *{ 35 * const wchar_t *s0 = s + 1; 36 * while (*s++) 37 * ; 38 * return (s - s0); 39 *} 40 */ 41 42#include "SYS.h" 43 44 ANSI_PRAGMA_WEAK(wcslen,function) 45 ANSI_PRAGMA_WEAK(wslen,function) 46 47 ENTRY(wcslen) 48 movl 4(%esp),%edx 49 xorl %eax,%eax 50 51 .align 8 52.loop: 53 cmpl $0,(%edx) 54 je .out0 55 cmpl $0,4(%edx) 56 je .out1 57 cmpl $0,8(%edx) 58 je .out2 59 cmpl $0,12(%edx) 60 je .out3 61 addl $4,%eax 62 addl $16,%edx 63 jmp .loop 64 65 .align 4 66.out1: 67 incl %eax 68.out0: 69 ret 70 71 .align 4 72.out2: 73 add $2,%eax 74 ret 75 76 .align 4 77.out3: 78 add $3, %eax 79 ret 80 SET_SIZE(wcslen) 81 82 ENTRY(wslen) 83 _prologue_ 84 movl _esp_(8),%eax 85 movl _esp_(4),%edx 86 pushl %eax 87 pushl %edx 88 call _fref_(wcslen) 89 addl $8,%esp 90 _epilogue_ 91 ret 92 SET_SIZE(wslen) 93