161 lines
4.1 KiB
Plaintext
161 lines
4.1 KiB
Plaintext
* $NetBSD: DYADIC.GCC,v 1.2 1994/10/26 07:48:27 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.
|
|
|
|
*
|
|
* DYADIC.GCC --- DYADIC template for GCC compiler
|
|
*
|
|
* This is based on the generic template. The only difference is that
|
|
* GCC does not need the d0-d1/a0-a1 registers saved.
|
|
*
|
|
* Customizations:
|
|
* 2. Likewise, don't save FP0/FP1 if they are scratch
|
|
* registers.
|
|
* 3. Delete updating of the fpsr if you only care about
|
|
* the result.
|
|
* 5. Move the result to d0/d1 if the compiler is that old.
|
|
*
|
|
|
|
xref _OPa_
|
|
xref tag
|
|
|
|
xdef _OPs_
|
|
_OPs_:
|
|
link a6,#-LOCAL_SIZE
|
|
fmovem.x fp0-fp3,USER_FP0(a6)
|
|
fmove.l fpsr,USER_FPSR(a6)
|
|
fmove.l fpcr,USER_FPCR(a6) ; user's rounding mode/precision
|
|
fmove.l #0,fpcr ; force rounding mode/prec to extended,rn
|
|
*
|
|
* copy, convert and tag input arguments
|
|
*
|
|
fmove.s 8(a6),fp0
|
|
fmove.x fp0,FPTEMP(a6)
|
|
lea FPTEMP(a6),a0
|
|
bsr tag
|
|
move.b d0,DTAG(a6)
|
|
|
|
fmove.s 12(a6),fp0
|
|
fmove.x fp0,ETEMP(a6)
|
|
lea ETEMP(a6),a0
|
|
bsr tag
|
|
move.b d0,STAG(a6)
|
|
|
|
bsr _OPa_
|
|
|
|
fmove.l fpsr,d0 ; update status register
|
|
or.b FPSR_AEXCEPT(a6),d0 ;add previously accrued exceptions
|
|
swap.w d0
|
|
or.b FPSR_QBYTE(a6),d0 ; pickup sign of quotient byte
|
|
swap.w d0
|
|
fmove.l d0,fpsr
|
|
*
|
|
* Result is now in FP0
|
|
*
|
|
fmovem.x USER_FP1(a6),fp1-fp3 ; note: FP0 not restored
|
|
unlk a6
|
|
rts
|
|
|
|
xdef _OPd_
|
|
_OPd_:
|
|
link a6,#-LOCAL_SIZE
|
|
fmovem.x fp0-fp3,USER_FP0(a6)
|
|
fmove.l fpsr,USER_FPSR(a6)
|
|
fmove.l fpcr,USER_FPCR(a6) ; user's rounding mode/precision
|
|
fmove.l #0,fpcr ; force rounding mode/prec to extended,rn
|
|
*
|
|
* copy, convert and tag input arguments
|
|
*
|
|
fmove.d 8(a6),fp0
|
|
fmove.x fp0,FPTEMP(a6)
|
|
lea FPTEMP(a6),a0
|
|
bsr tag
|
|
move.b d0,DTAG(a6)
|
|
|
|
fmove.d 16(a6),fp0
|
|
fmove.x fp0,ETEMP(a6)
|
|
lea ETEMP(a6),a0
|
|
bsr tag
|
|
move.b d0,STAG(a6)
|
|
|
|
bsr _OPa_
|
|
|
|
fmove.l fpsr,d0 ; update status register
|
|
or.b FPSR_AEXCEPT(a6),d0 ;add previously accrued exceptions
|
|
swap.w d0
|
|
or.b FPSR_QBYTE(a6),d0 ; pickup sign of quotient byte
|
|
swap.w d0
|
|
fmove.l d0,fpsr
|
|
*
|
|
* Result is now in FP0
|
|
*
|
|
fmovem.x USER_FP1(a6),fp1-fp3 ; note: FP0 not restored
|
|
unlk a6
|
|
rts
|
|
|
|
xdef _OPx_
|
|
_OPx_:
|
|
link a6,#-LOCAL_SIZE
|
|
fmovem.x fp0-fp3,USER_FP0(a6)
|
|
fmove.l fpsr,USER_FPSR(a6)
|
|
fmove.l fpcr,USER_FPCR(a6) ; user's rounding mode/precision
|
|
fmove.l #0,fpcr ; force rounding mode/prec to extended,rn
|
|
*
|
|
* copy, convert and tag input arguments
|
|
*
|
|
fmove.x 8(a6),fp0
|
|
fmove.x fp0,FPTEMP(a6)
|
|
lea FPTEMP(a6),a0
|
|
bsr tag
|
|
move.b d0,DTAG(a6)
|
|
|
|
fmove.x 20(a6),fp0
|
|
fmove.x fp0,ETEMP(a6)
|
|
lea ETEMP(a6),a0
|
|
bsr tag
|
|
move.b d0,STAG(a6)
|
|
|
|
bsr _OPa_
|
|
|
|
fmove.l fpsr,d0 ; update status register
|
|
or.b FPSR_AEXCEPT(a6),d0 ;add previously accrued exceptions
|
|
swap.w d0
|
|
or.b FPSR_QBYTE(a6),d0 ; pickup sign of quotient byte
|
|
swap.w d0
|
|
fmove.l d0,fpsr
|
|
*
|
|
* Result is now in FP0
|
|
*
|
|
fmovem.x USER_FP1(a6),fp1-fp3 ; note: FP0 not restored
|
|
unlk a6
|
|
rts
|
|
|