/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2004 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ .ident "%Z%%M% %I% %E% SMI" .file "%M%" / / Wide character wcschr() implementation / / Algorithm based on Solaris 2.6 gen/strchr.s implementation / / .ident "@(#)strchr.s 1.1 92/04/17 SMI" / #include <sys/asm_linkage.h> ANSI_PRAGMA_WEAK(wcschr,function) ANSI_PRAGMA_WEAK(wschr,function) #include "SYS.h" .align 8 / accounts for .loop alignment and prolog ENTRY(_wcschr) /* (wchar_t *s, wchar_t wc) */ movq %rdi,%rax .loop: movl (%rax),%edx / %edx = wchar of string cmpl %esi,%edx / find it? je .found / yes testl %edx,%edx / is it null? je .notfound movl 4(%rax),%edx / %edx = wchar of string cmpl %esi,%edx / find it? je .found1 / yes testl %edx,%edx / is it null? je .notfound movl 8(%rax),%edx / %edx = wchar of string cmpl %esi,%edx / find it? je .found2 / yes testl %edx,%edx / is it null? je .notfound movl 12(%rax),%edx / %edx = wchar of string cmpl %esi,%edx / find it? je .found3 / yes addq $16,%rax testl %edx,%edx / is it null? jne .loop .notfound: xorl %eax,%eax / %rax = NULL ret .found3: addq $12,%rax ret .found2: addq $8,%rax ret .found1: addq $4,%rax .found: ret SET_SIZE(_wcschr) ENTRY(_wschr) jmp _wcschr / tail call into _wcschr SET_SIZE(_wschr)