124 lines
3.1 KiB
Plaintext
124 lines
3.1 KiB
Plaintext
* $NetBSD: sto_res.sa,v 1.4 2000/03/13 23:52:32 soren Exp $
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* MOTOROLA MICROPROCESSOR & MEMORY TECHNOLOGY GROUP
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* M68000 Hi-Performance Microprocessor Division
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* M68040 Software Package
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*
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* M68040 Software Package Copyright (c) 1993, 1994 Motorola Inc.
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* All rights reserved.
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*
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* THE SOFTWARE is provided on an "AS IS" basis and without warranty.
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* To the maximum extent permitted by applicable law,
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* MOTOROLA DISCLAIMS ALL WARRANTIES WHETHER EXPRESS OR IMPLIED,
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* INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
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* PARTICULAR PURPOSE and any warranty against infringement with
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* regard to the SOFTWARE (INCLUDING ANY MODIFIED VERSIONS THEREOF)
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* and any accompanying written materials.
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*
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* To the maximum extent permitted by applicable law,
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* IN NO EVENT SHALL MOTOROLA BE LIABLE FOR ANY DAMAGES WHATSOEVER
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* (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS
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* PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR
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* OTHER PECUNIARY LOSS) ARISING OF THE USE OR INABILITY TO USE THE
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* SOFTWARE. Motorola assumes no responsibility for the maintenance
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* and support of the SOFTWARE.
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*
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* You are hereby granted a copyright license to use, modify, and
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* distribute the SOFTWARE so long as this entire notice is retained
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* without alteration in any modified and/or redistributed versions,
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* and that such modified versions are clearly identified as such.
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* No licenses are granted by implication, estoppel or otherwise
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* under any patents or trademarks of Motorola, Inc.
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*
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* sto_res.sa 3.1 12/10/90
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*
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* Takes the result and puts it in where the user expects it.
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* Library functions return result in fp0. If fp0 is not the
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* users destination register then fp0 is moved to the
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* correct floating-point destination register. fp0 and fp1
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* are then restored to the original contents.
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*
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* Input: result in fp0,fp1
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*
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* d2 & a0 should be kept unmodified
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*
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* Output: moves the result to the true destination reg or mem
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*
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* Modifies: destination floating point register
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*
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STO_RES IDNT 2,1 Motorola 040 Floating Point Software Package
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section 8
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include fpsp.h
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xdef sto_cos
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sto_cos:
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bfextu CMDREG1B(a6){13:3},d0 ;extract cos destination
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cmpi.b #3,d0 ;check for fp0/fp1 cases
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ble.b c_fp0123
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fmovem.x fp1,-(a7)
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moveq.l #7,d1
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sub.l d0,d1 ;d1 = 7- (dest. reg. no.)
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clr.l d0
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bset.l d1,d0 ;d0 is dynamic register mask
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fmovem.x (a7)+,d0
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rts
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c_fp0123:
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tst.b d0
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beq.b c_is_fp0
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cmpi.b #1,d0
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beq.b c_is_fp1
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cmpi.b #2,d0
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beq.b c_is_fp2
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c_is_fp3:
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fmovem.x fp1,USER_FP3(a6)
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rts
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c_is_fp2:
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fmovem.x fp1,USER_FP2(a6)
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rts
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c_is_fp1:
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fmovem.x fp1,USER_FP1(a6)
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rts
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c_is_fp0:
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fmovem.x fp1,USER_FP0(a6)
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rts
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xdef sto_res
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sto_res:
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bfextu CMDREG1B(a6){6:3},d0 ;extract destination register
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cmpi.b #3,d0 ;check for fp0/fp1 cases
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ble.b fp0123
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fmovem.x fp0,-(a7)
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moveq.l #7,d1
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sub.l d0,d1 ;d1 = 7- (dest. reg. no.)
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clr.l d0
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bset.l d1,d0 ;d0 is dynamic register mask
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fmovem.x (a7)+,d0
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rts
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fp0123:
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tst.b d0
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beq.b is_fp0
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cmpi.b #1,d0
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beq.b is_fp1
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cmpi.b #2,d0
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beq.b is_fp2
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is_fp3:
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fmovem.x fp0,USER_FP3(a6)
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rts
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is_fp2:
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fmovem.x fp0,USER_FP2(a6)
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rts
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is_fp1:
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fmovem.x fp0,USER_FP1(a6)
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rts
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is_fp0:
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fmovem.x fp0,USER_FP0(a6)
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rts
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end
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