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
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