The word "RTEMS" almost completely removed from the core.

Configuration Table Template file added and all tests
modified to use this.  All gvar.h and conftbl.h files
removed from test directories.

Configuration parameter maximum_devices added.

Core semaphore and mutex handlers added and RTEMS API Semaphore
Manager updated to reflect this.

Initialization sequence changed to invoke API specific initialization
routines.  Initialization tasks table now owned by RTEMS Tasks Manager.

Added user extension for post-switch.

Utilized user extensions to implement API specific functionality
like signal dispatching.

Added extensions to the System Initialization Thread so that an
API can register a function to be invoked while the system
is being initialized.  These are largely equivalent to the
pre-driver and post-driver hooks.

Added the Modules file oar-go32_p5, modified oar-go32, and modified
the file make/custom/go32.cfg to look at an environment varable which
determines what CPU model is being used.

All BSPs updated to reflect named devices and clock driver's IOCTL
used by the Shared Memory Driver.  Also merged clock isr into
main file and removed ckisr.c where possible.

Updated spsize to reflect new and moved variables.

Makefiles for the executive source and include files updated to show
break down of files into Core, RTEMS API, and Neither.

Header and inline files installed into subdirectory based on whether
logically in the Core or a part of the RTEMS API.

1 files changed, 185 insertions, 0 deletions

diff --git a/c/src/exec/score/src/coresem.c b/c/src/exec/score/src/coresem.c
new file mode 100644
index 0000000000..e7e1705f3c
--- /dev/null
+++ b/c/src/exec/score/src/coresem.c
@@ -0,0 +1,185 @@
+/*
+ *  CORE Semaphore Handler
+ *
+ *  DESCRIPTION:
+ *
+ *  This package is the implementation of the CORE Semaphore Handler.
+ *  This core object utilizes standard Dijkstra counting semaphores to provide
+ *  synchronization and mutual exclusion capabilities.
+ *
+ *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
+ *  On-Line Applications Research Corporation (OAR).
+ *  All rights assigned to U.S. Government, 1994.
+ *
+ *  This material may be reproduced by or for the U.S. Government pursuant
+ *  to the copyright license under the clause at DFARS 252.227-7013.  This
+ *  notice must appear in all copies of this file and its derivatives.
+ *
+ *  $Id$
+ */
+
+#include <rtems/system.h>
+#include <rtems/core/isr.h>
+#include <rtems/core/coresem.h>
+#include <rtems/core/states.h>
+#include <rtems/core/thread.h>
+#include <rtems/core/threadq.h>
+#include <rtems/core/mpci.h>
+
+/*PAGE
+ *
+ *  CORE_semaphore_Initialize
+ *
+ *  This function initialize a semaphore and sets the initial value based
+ *  on the given count.
+ *
+ *  Input parameters:
+ *    the_semaphore            - the semaphore control block to initialize
+ *    the_class                - the API class of the object
+ *    the_semaphore_attributes - the attributes specified at create time
+ *    initial_value            - semaphore's initial value
+ *    proxy_extract_callout    - MP specific extract callout
+ *
+ *  Output parameters:  NONE
+ */
+
+void _CORE_semaphore_Initialize(
+  CORE_semaphore_Control       *the_semaphore,
+  Objects_Classes               the_class,
+  CORE_semaphore_Attributes    *the_semaphore_attributes,
+  unsigned32                    initial_value,
+  Thread_queue_Extract_callout  proxy_extract_callout
+)
+{
+
+  the_semaphore->Attributes = *the_semaphore_attributes;
+  the_semaphore->count      = initial_value;
+
+  _Thread_queue_Initialize(
+    &the_semaphore->Wait_queue,
+    the_class,
+    _CORE_semaphore_Is_priority( the_semaphore_attributes ) ?
+              THREAD_QUEUE_DISCIPLINE_PRIORITY : THREAD_QUEUE_DISCIPLINE_FIFO,
+    STATES_WAITING_FOR_SEMAPHORE,
+    proxy_extract_callout,
+    CORE_SEMAPHORE_TIMEOUT
+  );
+}
+
+/*PAGE
+ *
+ *  _CORE_semaphore_Surrender
+ *
+ *  Input parameters:
+ *    the_semaphore            - the semaphore to be flushed
+ *    id                       - id of parent semaphore
+ *    api_semaphore_mp_support - api dependent MP support actions
+ *
+ *  Output parameters:
+ *    CORE_SEMAPHORE_STATUS_SUCCESSFUL - if successful
+ *    core error code                  - if unsuccessful
+ *
+ *  Output parameters:
+ */
+
+CORE_semaphore_Status _CORE_semaphore_Surrender(
+  CORE_semaphore_Control                *the_semaphore,
+  Objects_Id                             id,
+  CORE_semaphore_API_mp_support_callout  api_semaphore_mp_support
+)
+{
+  Thread_Control *the_thread;
+
+  if ( (the_thread = _Thread_queue_Dequeue(&the_semaphore->Wait_queue)) ) {
+
+    if ( !_Objects_Is_local_id( the_thread->Object.id ) )
+      (*api_semaphore_mp_support) ( the_thread, id );
+
+  } else
+    the_semaphore->count += 1;
+
+  return( CORE_SEMAPHORE_STATUS_SUCCESSFUL );
+}
+
+/*PAGE
+ *
+ *  _CORE_semaphore_Seize
+ *
+ *  This routine attempts to allocate a core semaphore to the calling thread.
+ *
+ *  Input parameters:
+ *    the_semaphore - pointer to semaphore control block
+ *    id            - id of object to wait on
+ *    wait          - TRUE if wait is allowed, FALSE otherwise
+ *    timeout       - number of ticks to wait (0 means forever)
+ *
+ *  Output parameters:  NONE
+ *
+ *  INTERRUPT LATENCY:
+ *    available
+ *    wait
+ */
+
+void _CORE_semaphore_Seize(
+  CORE_semaphore_Control  *the_semaphore,
+  Objects_Id               id,
+  boolean                  wait,
+  Watchdog_Interval        timeout
+)
+{
+  Thread_Control *executing;
+  ISR_Level       level;
+
+  executing = _Thread_Executing;
+  executing->Wait.return_code = CORE_SEMAPHORE_STATUS_SUCCESSFUL;
+  _ISR_Disable( level );
+  if ( the_semaphore->count != 0 ) {
+    the_semaphore->count -= 1;
+    executing->resource_count++;
+    _ISR_Enable( level );
+    return;
+  }
+
+  if ( !wait ) {
+    _ISR_Enable( level );
+    executing->Wait.return_code = CORE_SEMAPHORE_STATUS_UNSATISFIED_NOWAIT;
+    return;
+  }
+
+  the_semaphore->Wait_queue.sync = TRUE;
+  executing->Wait.queue          = &the_semaphore->Wait_queue;
+  executing->Wait.id             = id;
+  _ISR_Enable( level );
+
+  _Thread_queue_Enqueue( &the_semaphore->Wait_queue, timeout );
+}
+
+
+/*PAGE
+ *
+ *  _CORE_semaphore_Flush
+ *
+ *  This function a flushes the semaphore's task wait queue.
+ *
+ *  Input parameters:
+ *    the_semaphore          - the semaphore to be flushed
+ *    remote_extract_callout - function to invoke remotely
+ *    status                 - status to pass to thread
+ *
+ *  Output parameters:  NONE
+ */
+ 
+void _CORE_semaphore_Flush(
+  CORE_semaphore_Control     *the_semaphore,
+  Thread_queue_Flush_callout  remote_extract_callout,
+  unsigned32                  status
+)
+{
+ 
+  _Thread_queue_Flush(
+    &the_semaphore->Wait_queue,
+    remote_extract_callout,
+    status
+  );
+ 
+}