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