diff options
Diffstat (limited to 'arch/m68k/fpsp040/sto_res.S')
| -rw-r--r-- | arch/m68k/fpsp040/sto_res.S | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/m68k/fpsp040/sto_res.S b/arch/m68k/fpsp040/sto_res.S new file mode 100644 index 0000000..0cdca3b --- /dev/null +++ b/arch/m68k/fpsp040/sto_res.S @@ -0,0 +1,98 @@ +| +| 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destination floating point register +| + +| Copyright (C) Motorola, Inc. 1990 +| All Rights Reserved +| +| THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF MOTOROLA +| The copyright notice above does not evidence any +| actual or intended publication of such source code.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 |
