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Annotation of sys/arch/m68k/fpsp/DYADIC.CI5, Revision 1.1.1.1

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: