1 | 2 | sto_res.sa 3.1 12/10/90 3 | 4 | Takes the result and puts it in where the user expects it. 5 | Library functions return result in fp0. If fp0 is not the 6 | users destination register then fp0 is moved to the 7 | correct floating-point destination register. fp0 and fp1 8 | are then restored to the original contents. 9 | 10 | Input: result in fp0,fp1 11 | 12 | d2 & a0 should be kept unmodified 13 | 14 | Output: moves the result to the true destination reg or mem 15 | 16 | Modifies: destination floating point register 17 | 18 19 | Copyright (C) Motorola, Inc. 1990 20 | All Rights Reserved 21 | 22 | For details on the license for this file, please see the 23 | file, README, in this same directory. 24 25 STO_RES: |idnt 2,1 | Motorola 040 Floating Point Software Package 26 27 28 |section 8 29 30 #include "fpsp.h" 31 32 .global sto_cos 33 sto_cos: 34 bfextu CMDREG1B(%a6){#13:#3},%d0 |extract cos destination 35 cmpib #3,%d0 |check for fp0/fp1 cases 36 bles c_fp0123 37 fmovemx %fp1-%fp1,-(%a7) 38 moveql #7,%d1 39 subl %d0,%d1 |d1 = 7- (dest. reg. no.) 40 clrl %d0 41 bsetl %d1,%d0 |d0 is dynamic register mask 42 fmovemx (%a7)+,%d0 43 rts 44 c_fp0123: 45 cmpib #0,%d0 46 beqs c_is_fp0 47 cmpib #1,%d0 48 beqs c_is_fp1 49 cmpib #2,%d0 50 beqs c_is_fp2 51 c_is_fp3: 52 fmovemx %fp1-%fp1,USER_FP3(%a6) 53 rts 54 c_is_fp2: 55 fmovemx %fp1-%fp1,USER_FP2(%a6) 56 rts 57 c_is_fp1: 58 fmovemx %fp1-%fp1,USER_FP1(%a6) 59 rts 60 c_is_fp0: 61 fmovemx %fp1-%fp1,USER_FP0(%a6) 62 rts 63 64 65 .global sto_res 66 sto_res: 67 bfextu CMDREG1B(%a6){#6:#3},%d0 |extract destination register 68 cmpib #3,%d0 |check for fp0/fp1 cases 69 bles fp0123 70 fmovemx %fp0-%fp0,-(%a7) 71 moveql #7,%d1 72 subl %d0,%d1 |d1 = 7- (dest. reg. no.) 73 clrl %d0 74 bsetl %d1,%d0 |d0 is dynamic register mask 75 fmovemx (%a7)+,%d0 76 rts 77 fp0123: 78 cmpib #0,%d0 79 beqs is_fp0 80 cmpib #1,%d0 81 beqs is_fp1 82 cmpib #2,%d0 83 beqs is_fp2 84 is_fp3: 85 fmovemx %fp0-%fp0,USER_FP3(%a6) 86 rts 87 is_fp2: 88 fmovemx %fp0-%fp0,USER_FP2(%a6) 89 rts 90 is_fp1: 91 fmovemx %fp0-%fp0,USER_FP1(%a6) 92 rts 93 is_fp0: 94 fmovemx %fp0-%fp0,USER_FP0(%a6) 95 rts 96 97 |end 98