1993-12-04 06:05:16 +03:00
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/*
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1995-10-07 12:26:14 +03:00
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* Written by J.T. Conklin <jtc@netbsd.org>.
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* Public domain.
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1993-12-04 06:05:16 +03:00
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*/
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1995-02-05 18:06:43 +03:00
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#include <machine/asm.h>
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1993-12-04 06:05:16 +03:00
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#if defined(LIBC_SCCS)
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1995-10-07 12:26:14 +03:00
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RCSID("$NetBSD: strlen.S,v 1.5 1995/10/07 09:27:12 mycroft Exp $")
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1993-12-04 06:05:16 +03:00
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#endif
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ENTRY(strlen)
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pushl %edi
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movl 8(%esp),%edi /* string address */
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cld /* set search forward */
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xorl %eax,%eax /* set search for null terminator */
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movl $-1,%ecx /* set search for lots of characters */
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repne /* search! */
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scasb
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notl %ecx /* get length by taking complement */
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leal -1(%ecx),%eax /* and subtracting one */
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popl %edi
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ret
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