Annotation of sys/arch/m68k/fpsp/DYADIC.CI5, Revision 1.1
1.1 ! nbrk 1: * $OpenBSD: DYADIC.CI5,v 1.2 1996/05/29 21:05:18 niklas Exp $
! 2: * $NetBSD: DYADIC.CI5,v 1.2 1994/10/26 07:48:26 cgd Exp $
! 3:
! 4: * MOTOROLA MICROPROCESSOR & MEMORY TECHNOLOGY GROUP
! 5: * M68000 Hi-Performance Microprocessor Division
! 6: * M68040 Software Package
! 7: *
! 8: * M68040 Software Package Copyright (c) 1993, 1994 Motorola Inc.
! 9: * All rights reserved.
! 10: *
! 11: * THE SOFTWARE is provided on an "AS IS" basis and without warranty.
! 12: * To the maximum extent permitted by applicable law,
! 13: * MOTOROLA DISCLAIMS ALL WARRANTIES WHETHER EXPRESS OR IMPLIED,
! 14: * INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
! 15: * PARTICULAR PURPOSE and any warranty against infringement with
! 16: * regard to the SOFTWARE (INCLUDING ANY MODIFIED VERSIONS THEREOF)
! 17: * and any accompanying written materials.
! 18: *
! 19: * To the maximum extent permitted by applicable law,
! 20: * IN NO EVENT SHALL MOTOROLA BE LIABLE FOR ANY DAMAGES WHATSOEVER
! 21: * (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS
! 22: * PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR
! 23: * OTHER PECUNIARY LOSS) ARISING OF THE USE OR INABILITY TO USE THE
! 24: * SOFTWARE. Motorola assumes no responsibility for the maintenance
! 25: * and support of the SOFTWARE.
! 26: *
! 27: * You are hereby granted a copyright license to use, modify, and
! 28: * distribute the SOFTWARE so long as this entire notice is retained
! 29: * without alteration in any modified and/or redistributed versions,
! 30: * and that such modified versions are clearly identified as such.
! 31: * No licenses are granted by implication, estoppel or otherwise
! 32: * under any patents or trademarks of Motorola, Inc.
! 33:
! 34: *
! 35: * DYADIC.CI5 1.2 4/30/91
! 36: *
! 37: * DYADIC.CI5 --- DYADIC template for CI5 compiler
! 38: *
! 39:
! 40: xref _OPa_
! 41: xref tag
! 42:
! 43: xdef _OPd_
! 44: _OPd_:
! 45: link a6,#-LOCAL_SIZE
! 46: fmovem.x fp2-fp3,USER_FP2(a6)
! 47: fmovem.l fpsr/fpcr,USER_FPSR(a6) ; user's rounding mode/precision
! 48: fmove.l #0,fpcr ; force rounding mode/prec to extended,rn
! 49: *
! 50: * copy, convert and tag input arguments
! 51: *
! 52: fmove.d 8(a6),fp0
! 53: fmove.x fp0,FPTEMP(a6)
! 54: lea FPTEMP(a6),a0
! 55: bsr tag
! 56: move.b d0,DTAG(a6)
! 57:
! 58: fmove.d 16(a6),fp0
! 59: fmove.x fp0,ETEMP(a6)
! 60: lea ETEMP(a6),a0
! 61: bsr tag
! 62: move.b d0,STAG(a6)
! 63:
! 64: bsr _OPa_
! 65:
! 66: fmove.l fpsr,d0 ; update status register
! 67: or.b FPSR_AEXCEPT(a6),d0 ;add previously accrued exceptions
! 68: swap.w d0
! 69: or.b FPSR_QBYTE(a6),d0 ; pickup sign of quotient byte
! 70: swap.w d0
! 71: fmove.l d0,fpsr
! 72: *
! 73: * Result is now in FP0
! 74: *
! 75: fmovem.x USER_FP2(a6),fp2-fp3 ; note: FP0/FP1 not restored
! 76: unlk a6
! 77: rts
! 78:
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