* $NetBSD: MONADIC.CI5,v 1.2 1994/10/26 07:48:39 cgd Exp $ * MOTOROLA MICROPROCESSOR & MEMORY TECHNOLOGY GROUP * M68000 Hi-Performance Microprocessor Division * M68040 Software Package * * M68040 Software Package Copyright (c) 1993, 1994 Motorola Inc. * All rights reserved. * * THE SOFTWARE is provided on an "AS IS" basis and without warranty. * To the maximum extent permitted by applicable law, * MOTOROLA DISCLAIMS ALL WARRANTIES WHETHER EXPRESS OR IMPLIED, * INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A * PARTICULAR PURPOSE and any warranty against infringement with * regard to the SOFTWARE (INCLUDING ANY MODIFIED VERSIONS THEREOF) * and any accompanying written materials. * * To the maximum extent permitted by applicable law, * IN NO EVENT SHALL MOTOROLA BE LIABLE FOR ANY DAMAGES WHATSOEVER * (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS * PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR * OTHER PECUNIARY LOSS) ARISING OF THE USE OR INABILITY TO USE THE * SOFTWARE. Motorola assumes no responsibility for the maintenance * and support of the SOFTWARE. * * You are hereby granted a copyright license to use, modify, and * distribute the SOFTWARE so long as this entire notice is retained * without alteration in any modified and/or redistributed versions, * and that such modified versions are clearly identified as such. * No licenses are granted by implication, estoppel or otherwise * under any patents or trademarks of Motorola, Inc. * * MONADIC.CI5 1.3 4/30/91 * * MONADIC.CI5 --- MONADIC template for CI5 compiler * xref tag xref _OPr_ xref _OPz_ xref _OPi_ xref _OPn_ xref _OPm_ xdef _OPd_ _OPd_: link a6,#-LOCAL_SIZE fmovem.x fp2-fp3,USER_FP2(a6) fmove.l fpsr,USER_FPSR(a6) fmove.l fpcr,d1 ; user's rounding mode/precision fmove.l #0,fpcr ; force rounding mode/prec to extended,rn * * copy, convert and tag input argument * fmove.d 8(a6),fp0 fmove.x fp0,ETEMP(a6) lea ETEMP(a6),a0 bsr tag move.b d0,STAG(a6) tst.b d0 bne.b _TMP_2 bsr _OPr_ ; normalized (regular) number bra.b _TMP_6 _TMP_2: cmp.b #$20,d0 ; zero? bne.b _TMP_3 bsr _OPz_ bra.b _TMP_6 _TMP_3: cmp.b #$40,d0 ; infinity? bne.b _TMP_4 bsr _OPi_ bra.b _TMP_6 _TMP_4: cmp.b #$60,d0 ; NaN? bne.b _TMP_5 bsr _OPn_ bra.b _TMP_6 _TMP_5: bsr _OPm_ ; assuming a denorm... _TMP_6: fmove.l fpsr,d0 ; update status register or.b USER_FPSR+3(a6),d0 ;add previously accrued exceptions move.l d0,USER_FPSR(a6) * * Result is now in FP0 * fmovem.x USER_FP2(a6),fp2-fp3 ; note: FP1 not restored unlk a6 rts |