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Annotation of sys/lib/libkern/arch/i386/scanc.S, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: scanc.S,v 1.2 1996/09/27 06:47:48 mickey Exp $        */
        !             2: /*     $NetBSD: scanc.S,v 1.5 1994/10/26 06:39:13 cgd Exp $    */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1994 Charles Hannum.  All rights reserved.
        !             6:  *
        !             7:  * Redistribution and use in source and binary forms, with or without
        !             8:  * modification, are permitted provided that the following conditions
        !             9:  * are met:
        !            10:  * 1. Redistributions of source code must retain the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer.
        !            12:  * 2. Redistributions in binary form must reproduce the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer in the
        !            14:  *    documentation and/or other materials provided with the distribution.
        !            15:  * 3. All advertising materials mentioning features or use of this software
        !            16:  *    must display the following acknowledgement:
        !            17:  *     This product includes software developed by Charles Hannum.
        !            18:  * 4. The name of the author may not be used to endorse or promote products
        !            19:  *    derived from this software without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            22:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            23:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            24:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
        !            25:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            26:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            27:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            28:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            29:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            30:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            31:  */
        !            32:
        !            33: #include "DEFS.h"
        !            34:
        !            35: ENTRY(scanc)
        !            36:        movl    4(%esp),%ecx
        !            37:        testl   %ecx,%ecx
        !            38:        jz      3f
        !            39:        pushl   %esi
        !            40:        pushl   %edi
        !            41:        movl    16(%esp),%esi
        !            42:        movl    20(%esp),%edi
        !            43:        movb    24(%esp),%dl
        !            44:        xorl    %eax,%eax
        !            45:        cld
        !            46: 1:
        !            47:        lodsb
        !            48:        testb   %dl,(%eax,%edi)
        !            49:        jnz     2f
        !            50:        decl    %ecx
        !            51:        jnz     1b
        !            52: 2:
        !            53:        popl    %edi
        !            54:        popl    %esi
        !            55: 3:
        !            56:        movl    %ecx,%eax
        !            57:        ret