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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
|
| For details on the license for this file, please see the
| file, README, in this same directory.
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
|
