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#pragma ident "%Z%%M% %I% %E% SMI" 28 29 .file "%M%" 30 31/* 32 * Wide character wcslen() implementation 33 * 34 * size_t 35 * wcslen(const wchar_t *s) 36 *{ 37 * const wchar_t *s0 = s + 1; 38 * while (*s++) 39 * ; 40 * return (s - s0); 41 *} 42 */ 43 44#include "SYS.h" 45 46 ANSI_PRAGMA_WEAK(wcslen,function) 47 ANSI_PRAGMA_WEAK(wslen,function) 48 49 ENTRY(wcslen) 50 movl 4(%esp),%edx 51 xorl %eax,%eax 52 53 .align 8 54.loop: 55 cmpl $0,(%edx) 56 je .out0 57 cmpl $0,4(%edx) 58 je .out1 59 cmpl $0,8(%edx) 60 je .out2 61 cmpl $0,12(%edx) 62 je .out3 63 addl $4,%eax 64 addl $16,%edx 65 jmp .loop 66 67 .align 4 68.out1: 69 incl %eax 70.out0: 71 ret 72 73 .align 4 74.out2: 75 add $2,%eax 76 ret 77 78 .align 4 79.out3: 80 add $3, %eax 81 ret 82 SET_SIZE(wcslen) 83 84 ENTRY(wslen) 85 _prologue_ 86 movl _esp_(8),%eax 87 movl _esp_(4),%edx 88 pushl %eax 89 pushl %edx 90 call _fref_(wcslen) 91 addl $8,%esp 92 _epilogue_ 93 ret 94 SET_SIZE(wslen) 95