This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
67 lines
2.5 KiB
ArmAsm
67 lines
2.5 KiB
ArmAsm
/* $NetBSD: divsi3.S,v 1.2 2006/01/05 22:33:34 he Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* the Systems Programming Group of the University of Utah Computer
|
|
* Science Department.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <machine/asm.h>
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
#if 0
|
|
RCSID("from: @(#)divsi3.s 5.1 (Berkeley) 6/7/90")
|
|
#else
|
|
RCSID("$NetBSD: divsi3.S,v 1.2 2006/01/05 22:33:34 he Exp $")
|
|
#endif
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
/* int / int */
|
|
ENTRY(__divsi3)
|
|
#ifndef __mc68010__
|
|
movel %sp@(4),%d0
|
|
divsl %sp@(8),%d0
|
|
rts
|
|
#else
|
|
| NB: this requires that __udivsi3 preserve %a0:
|
|
movel %sp@(4), %d1 | load the dividend
|
|
bpl 1f
|
|
negl %sp@(4) | store abs(dividend)
|
|
1: movel %sp@(8), %d0 | load the divisor
|
|
bpl 2f
|
|
negl %sp@(8) | store abs(divisor)
|
|
2: eorl %d1, %d0
|
|
bpl 3f | branch if sgn(divisor) == sgn(dividend)
|
|
movel %sp@+, %a0 | pop return address
|
|
pea %pc@(Lret) | push our return address
|
|
3: jmp _C_LABEL(__udivsi3)
|
|
Lret: negl %d0 | negate quotient
|
|
jmp %a0@
|
|
#endif /* __mc68010__ */
|