arch/.unmaintained/m68k-emul/enable.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang:
   7 */
   8
   9 #include <exec/execbase.h>
  10 #include <proto/exec.h>
  11 #include <signal.h>
  12 #include <stdio.h>
  13
  14 void _os_enable (void);
  15 extern int supervisor;
  16
  17 /******************************************************************************
  18
  19     NAME
  20         AROS_LH0(void, Enable,
  21
  22     LOCATION
  23         struct ExecBase *, SysBase, 21, Exec)
  24
  25     FUNCTION
  26
  27     INPUTS
  28
  29     RESULT
  30
  31     NOTES
  32
  33     EXAMPLE
  34
  35     BUGS
  36
  37     SEE ALSO
  38
  39     INTERNALS
  40
  41     HISTORY
  42
  43 ******************************************************************************/
  44
  45 void _Enable (struct ExecBase * SysBase)
  46 {
  47     if (--SysBase->IDNestCnt < 0)
  48     {
  49         _os_enable ();
  50
  51         if ((SysBase->AttnResched & 0x80)
  52             || SysBase->TDNestCnt >= 0
  53         )
  54         {
  55             SysBase->AttnResched &= ~0x80;
  56
  57             Switch ();
  58         }
  59     }
  60 } /* _Enable */
  61
  62 void _os_enable (void)
  63 {
  64     sigset_t set;
  65
  66     /* if (supervisor)
  67     {
  68         fprintf (stderr, "Enable() called in supervisor mode\n");
  69     } */
  70
  71     sigfillset (&set);
  72
  73     sigprocmask (SIG_UNBLOCK, &set, NULL);
  74 } /* _os_enable */