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https://github.com/adtools/clib2.git
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91bcdea2a2
git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14685 87f5fb63-7c3d-0410-a384-fd976d0f7a62
144 lines
1.6 KiB
NASM
144 lines
1.6 KiB
NASM
*
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* $Id: sas_cxv45.asm,v 1.1.1.1 2004-07-26 16:31:04 obarthel Exp $
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*
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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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section text,code
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xdef __CXV45
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__CXV45
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MOVE.L D0,D1
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SWAP D1
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AND.W #$7FFF,D1
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CMP.W #$80,D1
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BLT lbC00003E
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CMP.W #$7F80,D1
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BGE lbC000060
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ASR.L #3,D0
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AND.L #$8FFFFFFF,D0
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ADD.L #$38000000,D0
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SWAP D1
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AND.L #7,D1
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ROR.L #3,D1
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lbC00003C
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RTS
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lbC00003E
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TST.L D1
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BEQ.S lbC00003C
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MOVEM.L D2-D5,-(SP)
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SWAP D0
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MOVE.W D0,D4
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AND.W #$8000,D4
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MOVE.W #$39D0,D5
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MOVEQ #0,D0
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SWAP D1
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JSR __CXNRM5(PC)
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MOVEM.L (SP)+,D2-D5
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RTS
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lbC000060
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ASR.L #3,D0
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OR.L #$7FF00000,D0
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SWAP D1
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AND.L #7,D1
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ROR.L #3,D1
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RTS
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__CXNRM5
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CMP.L #$20,D0
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BGE lbC0000B0
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SWAP D0
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SWAP D1
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MOVE.W D1,D0
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CLR.W D1
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SUB.W #$100,D5
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BGE.S __CXNRM5
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BRA lbC0000F4
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__CXTAB5
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dc.b 5
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dc.b 4
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dc.b 3
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dc.b 3
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dc.b 2
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dc.b 2
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dc.b 2
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dc.b 2
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dc.b 1
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dc.b 1
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dc.b 1
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dc.b 1
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dc.b 1
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dc.b 1
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dc.b 1
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dc.b 1
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dc.b 0
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dc.b 0
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dc.b 0
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dc.b 0
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dc.b 0
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dc.b 0
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dc.b 0
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dc.b 0
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dc.b 0
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dc.b 0
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dc.b 0
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dc.b 0
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dc.b 0
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dc.b 0
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dc.b 0
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dc.b 0
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lbC0000B0
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MOVEQ #0,D3
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CMP.L #$2000,D0
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BGE lbC0000C0
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LSL.L #8,D0
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ADDQ.W #8,D3
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lbC0000C0
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SWAP D0
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TST.W D0
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BNE lbC0000CC
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ROL.L #4,D0
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ADDQ.W #4,D3
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lbC0000CC
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MOVEQ #0,D2
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MOVE.B __CXTAB5(PC,D0.W),D2
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ROL.L D2,D0
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ADD.W D2,D3
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SWAP D0
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MOVE.L D1,D2
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LSL.L D3,D1
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ROL.L D3,D2
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EOR.W D1,D2
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EOR.W D2,D0
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LSL.W #4,D3
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SUB.W D3,D5
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BLT lbC0000F4
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SWAP D0
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ADD.W D5,D0
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OR.W D4,D0
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SWAP D0
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RTS
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lbC0000F4
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NEG.W D5
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LSR.W #4,D5
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MOVE.L D0,D2
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LSR.L D5,D0
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ROR.L D5,D2
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LSR.L D5,D1
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EOR.L D0,D2
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EOR.L D2,D1
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SWAP D0
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EOR.W D4,D0
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SWAP D0
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RTS
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end
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