rom/kernel/switch.c

   1 /*
   2     Copyright © 1995-2013, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6 */
   7
   8 #include <aros/kernel.h>
   9
  10 #include <kernel_base.h>
  11 #include <kernel_syscall.h>
  12
  13 /*****************************************************************************
  14
  15     NAME */
  16 #include <proto/kernel.h>
  17
  18         AROS_LH0(void, KrnSwitch,
  19
  20 /*  SYNOPSIS */
  21
  22 /*  LOCATION */
  23         struct KernelBase *, KernelBase, 5, Kernel)
  24
  25 /*  FUNCTION
  26         Save context of caller's task and dispatch the next available task
  27
  28     INPUTS
  29         None
  30
  31     RESULT
  32         None
  33
  34     NOTES
  35         This entry point directly calls task switch routine
  36         in supervisor mode. It neither performs any checks of caller status
  37         nor obeys interrupt enable state. After calling this function, caller's
  38         task will be replaced by another one, and it's caller's responsibility
  39         to do anything to prevent task loss.
  40
  41         This function is safe to call only from within user mode.
  42         This function is considered internal, and not meant to be called
  43         by user's software.
  44
  45     EXAMPLE
  46
  47     BUGS
  48
  49     SEE ALSO
  50
  51     INTERNALS
  52
  53 ******************************************************************************/
  54 {
  55     AROS_LIBFUNC_INIT
  56
  57     krnSysCall(SC_SWITCH);
  58
  59     AROS_LIBFUNC_EXIT
  60 }