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 "wschr.s" 28 29/ 30/ Wide character wcschr() implementation 31/ 32/ Algorithm based on Solaris 2.6 gen/strchr.s implementation 33/ 34 35#include "SYS.h" 36 37 ANSI_PRAGMA_WEAK(wcschr,function) 38 ANSI_PRAGMA_WEAK(wschr,function) 39 40 .align 8 / accounts for .loop alignment and prolog 41 42 ENTRY(wcschr) 43 movl 4(%esp),%eax / %eax = string address 44 movl 8(%esp),%ecx / %ecx = wchar sought 45.loop: 46 movl (%eax),%edx / %edx = wchar of string 47 cmpl %ecx,%edx / find it? 48 je .found / yes 49 testl %edx,%edx / is it null? 50 je .notfound 51 52 movl 4(%eax),%edx / %edx = wchar of string 53 cmpl %ecx,%edx / find it? 54 je .found1 / yes 55 testl %edx,%edx / is it null? 56 je .notfound 57 58 movl 8(%eax),%edx / %edx = wchar of string 59 cmpl %ecx,%edx / find it? 60 je .found2 / yes 61 testl %edx,%edx / is it null? 62 je .notfound 63 64 movl 12(%eax),%edx / %edx = wchar of string 65 cmpl %ecx,%edx / find it? 66 je .found3 / yes 67 addl $16,%eax 68 testl %edx,%edx / is it null? 69 jne .loop 70 71.notfound: 72 xorl %eax,%eax / %eax = NULL 73 ret 74 75.found3: 76 addl $12,%eax 77 ret 78.found2: 79 addl $8,%eax 80 ret 81.found1: 82 addl $4,%eax 83.found: 84 ret 85 SET_SIZE(wcschr) 86 87 ENTRY(wschr) 88 _prologue_ 89 movl _esp_(8),%eax 90 movl _esp_(4),%edx 91 pushl %eax 92 pushl %edx 93 call _fref_(wcschr) 94 addl $8,%esp 95 _epilogue_ 96 ret 97 SET_SIZE(wschr) 98