30 lines
516 B
ArmAsm
30 lines
516 B
ArmAsm
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/*
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* Written by J.T. Conklin <jtc@netbsd.org>.
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* Public domain.
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* Adapted for NetBSD/x86_64 by Frank van der Linden <fvdl@wasabisystems.com>
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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: rindex.S,v 1.1 2001/06/19 00:22:47 fvdl Exp $")
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#endif
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#ifdef STRRCHR
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ENTRY(strrchr)
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#else
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ENTRY(rindex)
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#endif
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movb %sil,%cl
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xorq %rax,%rax /* init pointer to null */
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L1:
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movb (%rdi),%dl
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cmpb %dl,%cl
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jne L2
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movq %rdi,%rax
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L2:
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incq %rdi
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testb %dl,%dl /* null terminator??? */
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jnz L1
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ret
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