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107 lines
2.4 KiB
NASM
107 lines
2.4 KiB
NASM
*
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* :ts=8
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*
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* Adapted from reassembled SAS/C runtime library code.
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*
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* Portable ISO 'C' (1994) runtime library for the Amiga computer
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* Copyright (c) 2002-2015 by Olaf Barthel <obarthel (at) gmx.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Neither the name of Olaf Barthel nor the names of contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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xdef __CXV52
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xdef __CXV53
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xref __CXFERR
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section text,code
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__CXV52:
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MOVEM.L D2/D3,-(SP)
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MOVEQ #-1,D3
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MOVE.L D0,D2
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BPL.W lab04A
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CMPI.L #$BFF00000,D0
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BCS.W lab07A
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MOVEM.L D0/D1/A0/A1,-(SP)
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PEA (2).L
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JSR __CXFERR
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ADDQ.W #4,SP
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MOVEM.L (SP)+,D0/D1/A0/A1
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BRA.W lab07A
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__CXV53:
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MOVEM.L D2/D3,-(SP)
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MOVE.L #$7FFFFFFF,D3
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MOVE.L D0,D2
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BPL.W lab04A
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ADDQ.L #1,D3
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EOR.L D3,D0
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lab04A: SWAP D0
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MOVE.W D0,D2
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ANDI.W #$7FF0,D2
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EOR.W D2,D0
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SUBI.W #$3FF0,D2
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BLT.W lab07A
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EORI.W #$10,D0
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SWAP D0
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ASR.W #4,D2
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SUBI.W #$14,D2
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BGT.W lab09A
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NEG.W D2
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LSR.L D2,D0
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TST.L D2
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BMI.W lab0B2
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BRA.W lab0B4
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lab07A: MOVEQ #0,D0
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BRA.W lab0B4
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lab080: MOVEM.L D0/D1/A0/A1,-(SP)
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PEA (2).L
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JSR __CXFERR
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ADDQ.W #4,SP
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MOVEM.L (SP)+,D0/D1/A0/A1
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MOVE.L D3,D0
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BRA.W lab0B4
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lab09A: CMPI.W #11,D2
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BGT.B lab080
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EOR.L D1,D0
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ROL.L D2,D0
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LSL.L D2,D1
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EOR.L D1,D0
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CMP.L D3,D0
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BHI.B lab080
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TST.L D2
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BPL.W lab0B4
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lab0B2: NEG.L D0
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lab0B4: MOVEM.L (SP)+,D2/D3
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RTS
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end
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