arch/m68k/fpsp040/x_bsun.S

   1 |
   2 |       x_bsun.sa 3.3 7/1/91
   3 |
   4 |       fpsp_bsun --- FPSP handler for branch/set on unordered exception
   5 |
   6 |       Copy the PC to FPIAR to maintain 881/882 compatibility
   7 |
   8 |       The real_bsun handler will need to perform further corrective
   9 |       measures as outlined in the 040 User's Manual on pages
  10 |       9-41f, section 9.8.3.
  11 |
  12
  13 |               Copyright (C) Motorola, Inc. 1990
  14 |                       All Rights Reserved
  15 |
  16 |       THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF MOTOROLA
  17 |       The copyright notice above does not evidence any
  18 |       actual or intended publication of such source code.
  19
  20 X_BSUN: |idnt    2,1 | Motorola 040 Floating Point Software Package
  21
  22         |section        8
  23
  24         .include "fpsp.h"
  25
  26         |xref   real_bsun
  27
  28         .global fpsp_bsun
  29 fpsp_bsun:
  30 |
  31         link            %a6,#-LOCAL_SIZE
  32         fsave           -(%a7)
  33         moveml          %d0-%d1/%a0-%a1,USER_DA(%a6)
  34         fmovemx %fp0-%fp3,USER_FP0(%a6)
  35         fmoveml %fpcr/%fpsr/%fpiar,USER_FPCR(%a6)
  36
  37 |
  38         movel           EXC_PC(%a6),USER_FPIAR(%a6)
  39 |
  40         moveml          USER_DA(%a6),%d0-%d1/%a0-%a1
  41         fmovemx USER_FP0(%a6),%fp0-%fp3
  42         fmoveml USER_FPCR(%a6),%fpcr/%fpsr/%fpiar
  43         frestore        (%a7)+
  44         unlk            %a6
  45         bral            real_bsun
  46 |
  47         |end