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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 |