score: Optimize _Thread_queue_Enqueue()

Move thread state for _Thread_queue_Enqueue() to the thread queue
context.  This reduces the parameter count of _Thread_queue_Enqueue()
from five to four (ARM for example has only four function parameter
registers).  Since the thread state is used after several function calls
inside _Thread_queue_Enqueue() this parameter was saved on the stack
previously.

1 files changed, 4 insertions, 1 deletions

diff --git a/cpukit/score/src/semaphore.c b/cpukit/score/src/semaphore.c
index 27d3dbfc2f..df33532108 100644
--- a/cpukit/score/src/semaphore.c
+++ b/cpukit/score/src/semaphore.c
@@ -103,6 +103,10 @@ void _Semaphore_Wait( struct _Semaphore_Control *_sem )
     sem->count = count - 1;
     _Semaphore_Queue_release( sem, level, &queue_context );
   } else {
+    _Thread_queue_Context_set_thread_state(
+      &queue_context,
+      STATES_WAITING_FOR_SYS_LOCK_SEMAPHORE
+    );
     _Thread_queue_Context_set_do_nothing_enqueue_callout( &queue_context );
     _Thread_queue_Context_set_no_timeout( &queue_context );
     _Thread_queue_Context_set_ISR_level( &queue_context, level );
@@ -110,7 +114,6 @@ void _Semaphore_Wait( struct _Semaphore_Control *_sem )
       &sem->Queue.Queue,
       SEMAPHORE_TQ_OPERATIONS,
       executing,
-      STATES_WAITING_FOR_SYS_LOCK_SEMAPHORE,
       &queue_context
     );
   }