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Diffstat (limited to 'arch/m68k/fpsp040/x_bsun.S')
| -rw-r--r-- | arch/m68k/fpsp040/x_bsun.S | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/m68k/fpsp040/x_bsun.S b/arch/m68k/fpsp040/x_bsun.S new file mode 100644 index 0000000..039247b --- /dev/null +++ b/arch/m68k/fpsp040/x_bsun.S @@ -0,0 +1,47 @@ +| +| x_bsun.sa 3.3 7/1/91 +| +| fpsp_bsun --- FPSP handler for branch/set on unordered exception +| +| Copy the PC to FPIAR to maintain 881/882 compatibility +| +| The real_bsun handler will need to perform further corrective +| measures as outlined in the 040 User's Manual on pages +| 9-41f, section 9.8.3. +| + +| Copyright (C) Motorola, Inc. 1990 +| All Rights Reserved +| +| THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF MOTOROLA +| The copyright notice above does not evidence any +| actual or intended publication of such source code. + +X_BSUN: |idnt 2,1 | Motorola 040 Floating Point Software Package + + |section 8 + +#include "fpsp.h" + + |xref real_bsun + + .global fpsp_bsun +fpsp_bsun: +| + link %a6,#-LOCAL_SIZE + fsave -(%a7) + moveml %d0-%d1/%a0-%a1,USER_DA(%a6) + fmovemx %fp0-%fp3,USER_FP0(%a6) + fmoveml %fpcr/%fpsr/%fpiar,USER_FPCR(%a6) + +| + movel EXC_PC(%a6),USER_FPIAR(%a6) +| + moveml USER_DA(%a6),%d0-%d1/%a0-%a1 + fmovemx USER_FP0(%a6),%fp0-%fp3 + fmoveml USER_FPCR(%a6),%fpcr/%fpsr/%fpiar + frestore (%a7)+ + unlk %a6 + bral real_bsun +| + |end |