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/*
* Hardware integer division and multiplication routines for SPARC v8 and higher.
*
* Copyright (C) 1996 David S. Miller (davem@redhat.com)
* Copyright (C) 1999 Jakub Jelinek (jj@ultra.linux.cz)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* JAKUB JELINEK OR DAVID MILLER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/misc/SparcMulDiv.S,v 1.1 1999/07/10 07:24:51 dawes Exp $ */
.globl urem_sparcv89, umul_sparcv89, udiv_sparcv89
.globl rem_sparcv89, mul_sparcv89, div_sparcv89
.align 32
urem_sparcv89:
wr %g0, 0x0, %y
nop
nop
nop
udiv %o0, %o1, %o2
umul %o2, %o1, %o2
retl
sub %o0, %o2, %o0
.align 32
umul_sparcv89:
umul %o0, %o1, %o0
retl
rd %y, %o1
.align 32
udiv_sparcv89:
wr %g0, 0x0, %y
nop
nop
retl
udiv %o0, %o1, %o0
.align 32
rem_sparcv89:
sra %o0, 0x1f, %o4
wr %o4, 0x0, %y
nop
nop
nop
sdivcc %o0, %o1, %o2
bvs,a 1f
xnor %o2, %g0, %o2
1: smul %o2, %o1, %o2
retl
sub %o0, %o2, %o0
.align 32
mul_sparcv89:
smul %o0, %o1, %o0
retl
rd %y, %o1
nop
.align 32
div_sparcv89:
sra %o0, 0x1f, %o2
wr %o2, 0x0, %y
nop
nop
nop
sdivcc %o0, %o1, %o0
bvs,a 1f
xnor %o0, %g0, %o0
1: retl
nop
|
