25 lines
402 B
ArmAsm
25 lines
402 B
ArmAsm
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#include <machine/asm.h>
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#if defined(LIBC_SCCS)
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RCSID("$NetBSD: bcmp.S,v 1.1 2001/06/19 00:22:45 fvdl Exp $")
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#endif
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ENTRY(bcmp)
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xorl %eax,%eax /* clear return value */
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cld /* set compare direction forward */
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movq %rdx,%rcx /* compare by words */
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shrq $3,%rcx
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repe
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cmpsq
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jne L1
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movq %rdx,%rcx /* compare remainder by bytes */
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andq $7,%rcx
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repe
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cmpsb
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je L2
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L1: incl %eax
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L2: ret
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