sto_res.S
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- |
- | sto_res.sa 3.1 12/10/90
- |
- | Takes the result and puts it in where the user expects it.
- | Library functions return result in fp0. If fp0 is not the
- | users destination register then fp0 is moved to the
- | correct floating-point destination register. fp0 and fp1
- | are then restored to the original contents.
- |
- | Input: result in fp0,fp1
- |
- | d2 & a0 should be kept unmodified
- |
- | Output: moves the result to the true destination reg or mem
- |
- | Modifies: destination floating point register
- |
- | Copyright (C) Motorola, Inc. 1990
- | All Rights Reserved
- |
- | THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF MOTOROLA
- | The copyright notice above does not evidence any
- | actual or intended publication of such source code.
- STO_RES: |idnt 2,1 | Motorola 040 Floating Point Software Package
- |section 8
- .include "fpsp.h"
- .global sto_cos
- sto_cos:
- bfextu CMDREG1B(%a6){#13:#3},%d0 |extract cos destination
- cmpib #3,%d0 |check for fp0/fp1 cases
- bles c_fp0123
- fmovemx %fp1-%fp1,-(%a7)
- moveql #7,%d1
- subl %d0,%d1 |d1 = 7- (dest. reg. no.)
- clrl %d0
- bsetl %d1,%d0 |d0 is dynamic register mask
- fmovemx (%a7)+,%d0
- rts
- c_fp0123:
- cmpib #0,%d0
- beqs c_is_fp0
- cmpib #1,%d0
- beqs c_is_fp1
- cmpib #2,%d0
- beqs c_is_fp2
- c_is_fp3:
- fmovemx %fp1-%fp1,USER_FP3(%a6)
- rts
- c_is_fp2:
- fmovemx %fp1-%fp1,USER_FP2(%a6)
- rts
- c_is_fp1:
- fmovemx %fp1-%fp1,USER_FP1(%a6)
- rts
- c_is_fp0:
- fmovemx %fp1-%fp1,USER_FP0(%a6)
- rts
- .global sto_res
- sto_res:
- bfextu CMDREG1B(%a6){#6:#3},%d0 |extract destination register
- cmpib #3,%d0 |check for fp0/fp1 cases
- bles fp0123
- fmovemx %fp0-%fp0,-(%a7)
- moveql #7,%d1
- subl %d0,%d1 |d1 = 7- (dest. reg. no.)
- clrl %d0
- bsetl %d1,%d0 |d0 is dynamic register mask
- fmovemx (%a7)+,%d0
- rts
- fp0123:
- cmpib #0,%d0
- beqs is_fp0
- cmpib #1,%d0
- beqs is_fp1
- cmpib #2,%d0
- beqs is_fp2
- is_fp3:
- fmovemx %fp0-%fp0,USER_FP3(%a6)
- rts
- is_fp2:
- fmovemx %fp0-%fp0,USER_FP2(%a6)
- rts
- is_fp1:
- fmovemx %fp0-%fp0,USER_FP1(%a6)
- rts
- is_fp0:
- fmovemx %fp0-%fp0,USER_FP0(%a6)
- rts
- |end