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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [rtems/] [src/] [signalcatch.c] - Blame information for rev 30

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/*
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 *  Signal Manager
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 *
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 *
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 *  COPYRIGHT (c) 1989-1999.
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 *  On-Line Applications Research Corporation (OAR).
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  $Id: signalcatch.c,v 1.2 2001-09-27 11:59:19 chris Exp $
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 */
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#include <rtems/system.h>
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#include <rtems/rtems/status.h>
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#include <rtems/rtems/asr.h>
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#include <rtems/score/isr.h>
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#include <rtems/rtems/modes.h>
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#include <rtems/rtems/signal.h>
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#include <rtems/score/thread.h>
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#include <rtems/rtems/tasks.h>
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/*PAGE
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 *
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 *  rtems_signal_catch
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 *
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 *  This directive allows a thread to specify what action to take when
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 *  catching signals.
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 *
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 *  Input parameters:
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 *    handler  - address of asynchronous signal routine (asr)
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 *              ( NULL indicates asr is invalid )
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 *    mode_set - mode value for asr
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 *
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 *  Output parameters:
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 *    RTEMS_SUCCESSFUL - always succeeds
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 */
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rtems_status_code rtems_signal_catch(
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  rtems_asr_entry   asr_handler,
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  rtems_mode        mode_set
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)
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{
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  Thread_Control     *executing;
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  RTEMS_API_Control  *api;
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  ASR_Information    *asr;
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/* XXX normalize mode */
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  executing = _Thread_Executing;
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  api = executing->API_Extensions[ THREAD_API_RTEMS ];
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  asr = &api->Signal;
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  _Thread_Disable_dispatch(); /* cannot reschedule while */
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                              /*   the thread is inconsistent */
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  if ( !_ASR_Is_null_handler( asr_handler ) ) {
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    asr->mode_set = mode_set;
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    asr->handler = asr_handler;
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  }
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  else
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    _ASR_Initialize( asr );
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  _Thread_Enable_dispatch();
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  return RTEMS_SUCCESSFUL;
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}

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