rom/exec/freetrap.c

   1 /*
   2     Copyright © 1995-2009, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Free a trap.
   6     Lang: english
   7 */
   8 #include "exec_intern.h"
   9 #include <proto/exec.h>
  10
  11 /*****************************************************************************
  12
  13     NAME */
  14
  15         AROS_LH1(void, FreeTrap,
  16
  17 /*  SYNOPSIS */
  18         AROS_LHA(long, trapNum, D0),
  19
  20 /*  LOCATION */
  21         struct ExecBase *, SysBase, 58, Exec)
  22
  23 /*  FUNCTION
  24
  25     INPUTS
  26
  27     RESULT
  28
  29     NOTES
  30
  31     EXAMPLE
  32
  33     BUGS
  34
  35     SEE ALSO
  36
  37     INTERNALS
  38         Very similar to FreeSignal()
  39
  40 *****************************************************************************/
  41 {
  42     AROS_LIBFUNC_INIT
  43
  44     if(trapNum!=-1)
  45     {
  46         /* No more atomic problem - i beleive THIS is atomic. - sonic */
  47         struct Task *me = SysBase->ThisTask;
  48
  49         if (me->tc_Flags & TF_ETASK) {
  50             struct ETask *et = me->tc_UnionETask.tc_ETask;
  51
  52             et->et_TrapAlloc &= ~(1<<trapNum);
  53         } else
  54             me->tc_TrapAlloc &= ~(1<<trapNum);
  55     }
  56
  57     AROS_LIBFUNC_EXIT
  58 } /* FreeTrap */