40 lines
578 B
ArmAsm
40 lines
578 B
ArmAsm
/* $NetBSD: memcmp.S,v 1.3 1998/04/03 22:58:09 matthias Exp $ */
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/*
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* Written by Matthias Pfaller, 1996
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* Public domain.
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*/
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#include <machine/asm.h>
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#if defined(LIBC_SCCS)
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RCSID("$NetBSD: memcmp.S,v 1.3 1998/04/03 22:58:09 matthias Exp $")
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#endif
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/*
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* int
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* memcmp (const void *b1, const void *b2, size_t len)
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*/
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KENTRY(memcmp, 12)
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enter [],0
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movd B_ARG2,r0
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movd B_ARG0,r1
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movd B_ARG1,r2
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lshd -2,r0
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cmpsd
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movqd 4,r0
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bne 1f
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movqd 3,r0
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andd B_ARG2,r0
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1: cmpsb
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bne 3f
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2: exit []
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ret ARGS
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3: movzbd 0(r1),r0
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movzbd 0(r2),r1
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subd r1,r0
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exit []
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ret ARGS
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