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The mask for 8-byte alignment is 0x7 not 0xf.

This commit is contained in:
eeh 2002-04-02 22:07:55 +00:00
parent 97d7bb77fe
commit bc3cedd6d8
1 changed files with 8 additions and 8 deletions
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16
lib/libc/arch/sparc64/string/strlen.S
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@ -1,7 +1,7 @@
/* $NetBSD: strlen.S,v 1.3 2002/04/01 15:59:26 eeh Exp $ */
/* $NetBSD: strlen.S,v 1.4 2002/04/02 22:07:55 eeh Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
* Copyright 2002 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Eduardo Horvath for Wasabi Systems, Inc.
@ -39,7 +39,7 @@
#include <machine/asm.h>
#if defined(LIBC_SCCS) && !defined(lint)
RCSID("$NetBSD: strlen.S,v 1.3 2002/04/01 15:59:26 eeh Exp $")
RCSID("$NetBSD: strlen.S,v 1.4 2002/04/02 22:07:55 eeh Exp $")
#endif /* LIBC_SCCS and not lint */
/* The algorithm here uses the following techniques:
@ -65,7 +65,7 @@ ENTRY(strlen)
/*
* Calculate address for and load the first xword.
*/
andn %o0, 0xf, %o1
andn %o0, 0x7, %o1
ldx [%o1], %g1
/*
@ -78,7 +78,7 @@ ENTRY(strlen)
or %o2, %lo(0x7f7f7f7f), %o2
sllx %o3, 32, %o5
andcc %o0, 0xf, %g5 ! Hoisted from below to fill a slot
andcc %o0, 0x7, %g5 ! Hoisted from below to fill a slot
sllx %o2, 32, %o4
or %o3, %o5, %o3
@ -92,11 +92,11 @@ ENTRY(strlen)
/*
* Mask off the leading bits:
*
* if (ptr & 0xf)
* mask = -1 << (64 - ((ptr & 0xf) << 3));
* if (ptr & 0x7)
* mask = -1 << (64 - ((ptr & 0x7) << 3));
*/
! andcc %o0, 0xf, %g5 ! Hoisted above
! andcc %o0, 0x7, %g5 ! Hoisted above
bz,pt %icc, 0f