1 1.2 cgd * $NetBSD: MONADIC.CI5,v 1.2 1994/10/26 07:48:39 cgd Exp $ 2 1.2 cgd 3 1.1 mycroft * MOTOROLA MICROPROCESSOR & MEMORY TECHNOLOGY GROUP 4 1.1 mycroft * M68000 Hi-Performance Microprocessor Division 5 1.1 mycroft * M68040 Software Package 6 1.1 mycroft * 7 1.1 mycroft * M68040 Software Package Copyright (c) 1993, 1994 Motorola Inc. 8 1.1 mycroft * All rights reserved. 9 1.1 mycroft * 10 1.1 mycroft * THE SOFTWARE is provided on an "AS IS" basis and without warranty. 11 1.1 mycroft * To the maximum extent permitted by applicable law, 12 1.1 mycroft * MOTOROLA DISCLAIMS ALL WARRANTIES WHETHER EXPRESS OR IMPLIED, 13 1.1 mycroft * INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A 14 1.1 mycroft * PARTICULAR PURPOSE and any warranty against infringement with 15 1.1 mycroft * regard to the SOFTWARE (INCLUDING ANY MODIFIED VERSIONS THEREOF) 16 1.1 mycroft * and any accompanying written materials. 17 1.1 mycroft * 18 1.1 mycroft * To the maximum extent permitted by applicable law, 19 1.1 mycroft * IN NO EVENT SHALL MOTOROLA BE LIABLE FOR ANY DAMAGES WHATSOEVER 20 1.1 mycroft * (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS 21 1.1 mycroft * PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR 22 1.1 mycroft * OTHER PECUNIARY LOSS) ARISING OF THE USE OR INABILITY TO USE THE 23 1.1 mycroft * SOFTWARE. Motorola assumes no responsibility for the maintenance 24 1.1 mycroft * and support of the SOFTWARE. 25 1.1 mycroft * 26 1.1 mycroft * You are hereby granted a copyright license to use, modify, and 27 1.1 mycroft * distribute the SOFTWARE so long as this entire notice is retained 28 1.1 mycroft * without alteration in any modified and/or redistributed versions, 29 1.1 mycroft * and that such modified versions are clearly identified as such. 30 1.1 mycroft * No licenses are granted by implication, estoppel or otherwise 31 1.1 mycroft * under any patents or trademarks of Motorola, Inc. 32 1.1 mycroft 33 1.1 mycroft * 34 1.1 mycroft * MONADIC.CI5 1.3 4/30/91 35 1.1 mycroft * 36 1.1 mycroft * MONADIC.CI5 --- MONADIC template for CI5 compiler 37 1.1 mycroft * 38 1.1 mycroft 39 1.1 mycroft xref tag 40 1.1 mycroft xref _OPr_ 41 1.1 mycroft xref _OPz_ 42 1.1 mycroft xref _OPi_ 43 1.1 mycroft xref _OPn_ 44 1.1 mycroft xref _OPm_ 45 1.1 mycroft 46 1.1 mycroft 47 1.1 mycroft xdef _OPd_ 48 1.1 mycroft _OPd_: 49 1.1 mycroft link a6,#-LOCAL_SIZE 50 1.1 mycroft fmovem.x fp2-fp3,USER_FP2(a6) 51 1.1 mycroft fmove.l fpsr,USER_FPSR(a6) 52 1.1 mycroft fmove.l fpcr,d1 ; user's rounding mode/precision 53 1.1 mycroft fmove.l #0,fpcr ; force rounding mode/prec to extended,rn 54 1.1 mycroft * 55 1.1 mycroft * copy, convert and tag input argument 56 1.1 mycroft * 57 1.1 mycroft fmove.d 8(a6),fp0 58 1.1 mycroft fmove.x fp0,ETEMP(a6) 59 1.1 mycroft lea ETEMP(a6),a0 60 1.1 mycroft bsr tag 61 1.1 mycroft move.b d0,STAG(a6) 62 1.1 mycroft tst.b d0 63 1.1 mycroft bne.b _TMP_2 64 1.1 mycroft bsr _OPr_ ; normalized (regular) number 65 1.1 mycroft bra.b _TMP_6 66 1.1 mycroft _TMP_2: 67 1.1 mycroft cmp.b #$20,d0 ; zero? 68 1.1 mycroft bne.b _TMP_3 69 1.1 mycroft bsr _OPz_ 70 1.1 mycroft bra.b _TMP_6 71 1.1 mycroft _TMP_3: 72 1.1 mycroft cmp.b #$40,d0 ; infinity? 73 1.1 mycroft bne.b _TMP_4 74 1.1 mycroft bsr _OPi_ 75 1.1 mycroft bra.b _TMP_6 76 1.1 mycroft _TMP_4: 77 1.1 mycroft cmp.b #$60,d0 ; NaN? 78 1.1 mycroft bne.b _TMP_5 79 1.1 mycroft bsr _OPn_ 80 1.1 mycroft bra.b _TMP_6 81 1.1 mycroft _TMP_5: 82 1.1 mycroft bsr _OPm_ ; assuming a denorm... 83 1.1 mycroft 84 1.1 mycroft _TMP_6: 85 1.1 mycroft fmove.l fpsr,d0 ; update status register 86 1.1 mycroft or.b USER_FPSR+3(a6),d0 ;add previously accrued exceptions 87 1.1 mycroft move.l d0,USER_FPSR(a6) 88 1.1 mycroft * 89 1.1 mycroft * Result is now in FP0 90 1.1 mycroft * 91 1.1 mycroft fmovem.x USER_FP2(a6),fp2-fp3 ; note: FP1 not restored 92 1.1 mycroft unlk a6 93 1.1 mycroft rts 94
Indexes created Sat Nov 01 21:09:44 GMT 2025