1 files changed, 149 insertions, 0 deletions
diff --git a/c/src/exec/rtems/src/signal.c b/c/src/exec/rtems/src/signal.c
new file mode 100644
index 0000000000..9f6d8df1a3
--- /dev/null
+++ b/c/src/exec/rtems/src/signal.c
@@ -0,0 +1,149 @@
+/*
+ *  Signal Manager
+ *
+ *
+ *  COPYRIGHT (c) 1989-1997.
+ *  On-Line Applications Research Corporation (OAR).
+ *  Copyright assigned to U.S. Government, 1994.
+ *
+ *  The license and distribution terms for this file may in
+ *  the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#include <rtems/system.h>
+#include <rtems/rtems/status.h>
+#include <rtems/rtems/asr.h>
+#include <rtems/score/isr.h>
+#include <rtems/rtems/modes.h>
+#include <rtems/rtems/signal.h>
+#include <rtems/score/thread.h>
+#include <rtems/rtems/tasks.h>
+
+/*PAGE
+ *
+ *  _Signal_Manager_initialization
+ *
+ *  This routine initializes all signal manager related data structures.
+ *
+ *  Input parameters:   NONE
+ *
+ *  Output parameters:  NONE
+ */
+ 
+void _Signal_Manager_initialization( void )
+{
+  /*
+   *  Register the MP Process Packet routine.
+   */
+ 
+  _MPCI_Register_packet_processor(
+    MP_PACKET_SIGNAL,
+    _Signal_MP_Process_packet
+  );
+}
+ 
+/*PAGE
+ *
+ *  rtems_signal_catch
+ *
+ *  This directive allows a thread to specify what action to take when
+ *  catching signals.
+ *
+ *  Input parameters:
+ *    handler  - address of asynchronous signal routine (asr)
+ *              ( NULL indicates asr is invalid )
+ *    mode_set - mode value for asr
+ *
+ *  Output parameters:
+ *    RTEMS_SUCCESSFUL - always succeeds
+ */
+
+rtems_status_code rtems_signal_catch(
+  rtems_asr_entry   asr_handler,
+  rtems_mode        mode_set
+)
+{
+  Thread_Control     *executing;
+  RTEMS_API_Control  *api;
+  ASR_Information    *asr;
+
+/* XXX normalize mode */
+  executing = _Thread_Executing;
+  api = executing->API_Extensions[ THREAD_API_RTEMS ];
+  asr = &api->Signal;
+
+  _Thread_Disable_dispatch(); /* cannot reschedule while */
+                              /*   the thread is inconsistent */
+
+  if ( !_ASR_Is_null_handler( asr_handler ) ) {
+    asr->mode_set = mode_set;
+    asr->handler = asr_handler;
+  }
+  else
+    _ASR_Initialize( asr );
+  _Thread_Enable_dispatch();
+  return RTEMS_SUCCESSFUL;
+}
+
+/*PAGE
+ *
+ *  rtems_signal_send
+ *
+ *  This directive allows a thread to send signals to a thread.
+ *
+ *  Input parameters:
+ *    id         - thread id
+ *    signal_set - signal set
+ *
+ *  Output parameters:
+ *    RTEMS_SUCCESSFUL - if successful
+ *    error code - if unsuccessful
+ */
+
+rtems_status_code rtems_signal_send(
+  Objects_Id             id,
+  rtems_signal_set signal_set
+)
+{
+  register Thread_Control *the_thread;
+  Objects_Locations        location;
+  RTEMS_API_Control       *api;
+  ASR_Information         *asr;
+
+  the_thread = _Thread_Get( id, &location );
+  switch ( location ) {
+    case OBJECTS_ERROR:
+      return RTEMS_INVALID_ID;
+    case OBJECTS_REMOTE:
+      return _Signal_MP_Send_request_packet(
+        SIGNAL_MP_SEND_REQUEST,
+        id,
+        signal_set
+      );
+    case OBJECTS_LOCAL:
+      api = the_thread->API_Extensions[ THREAD_API_RTEMS ];
+      asr = &api->Signal;
+
+      if ( ! _ASR_Is_null_handler( asr->handler ) ) {
+        if ( asr->is_enabled ) {
+          _ASR_Post_signals( signal_set, &asr->signals_posted );
+
+          the_thread->do_post_task_switch_extension = TRUE;
+
+          if ( _ISR_Is_in_progress() && _Thread_Is_executing( the_thread ) )
+            _ISR_Signals_to_thread_executing = TRUE;
+        } else {
+          _ASR_Post_signals( signal_set, &asr->signals_pending );
+        }
+        _Thread_Enable_dispatch();
+        return RTEMS_SUCCESSFUL;
+      }
+      _Thread_Enable_dispatch();
+      return RTEMS_NOT_DEFINED;
+  }
+
+  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
+}