arch/m68k-all/kernel/fpurestorecontext.S

   1 /*****************************************************************************
   2
   3     NAME
   4 #include <proto/kernel.h>
   5
   6 AROS_UFH2(void, FpuRestoreContext,
   7         AROS_UFHA(struct FpuContext *, fpu, A0)
   8         AROS_UFHA(UWORD, nulloffset, D0))
   9
  10     SYNOPSIS
  11
  12     LOCATION
  13
  14     FUNCTION
  15         Restore FPU Context
  16
  17     INPUTS
  18         None
  19
  20     RESULT
  21         None
  22
  23     NOTES
  24         Must be called in supervisor mode.
  25
  26     EXAMPLE
  27
  28     BUGS
  29
  30     SEE ALSO
  31
  32     INTERNALS
  33
  34 ******************************************************************************/
  35         #include "aros/m68k/asm.h"
  36
  37         .text
  38         .balign 4
  39         .globl  FpuRestoreContext
  40
  41 FpuRestoreContext:
  42         tst.b           3*4 + 8*12(%a0,%d0.w)
  43         beq.s           0f
  44         fmovem.l        %a0@,%fpcr/%fpsr/%fpiar
  45         fmovem.x        %a0@(3*4),%fp0-%fp7
  46 0:      frestore        %a0@(3*4 + 8*12)
  47         rts