2009-02-11 Joel Sherrill <joel.sherrill@oarcorp.com>

	* cpu.c, rtems/score/cpu.h: Eliminate _CPU_Thread_dispatch_pointer and
	passing address of _Thread_Dispatch to _CPU_Initialize. Clean up
	comments.

3 files changed, 9 insertions, 34 deletions

diff --git a/cpukit/score/cpu/unix/ChangeLog b/cpukit/score/cpu/unix/ChangeLog
index c972c9d6cf..21e9de51dc 100644
--- a/cpukit/score/cpu/unix/ChangeLog
+++ b/cpukit/score/cpu/unix/ChangeLog
@@ -1,3 +1,9 @@
+2009-02-11	Joel Sherrill <joel.sherrill@oarcorp.com>
+
+	* cpu.c, rtems/score/cpu.h: Eliminate _CPU_Thread_dispatch_pointer and
+	passing address of _Thread_Dispatch to _CPU_Initialize. Clean up
+	comments.
+
 2008-12-01	Joel Sherrill <joel.sherrill@OARcorp.com>
 
 	* cpu.c: Links hello again.
diff --git a/cpukit/score/cpu/unix/cpu.c b/cpukit/score/cpu/unix/cpu.c
index e92e04b0e7..b56fadcc5e 100644
--- a/cpukit/score/cpu/unix/cpu.c
+++ b/cpukit/score/cpu/unix/cpu.c
@@ -276,14 +276,10 @@ uint32_t   _CPU_ISR_Get_level( void )
  *
  *  This routine performs processor dependent initialization.
  *
- *  INPUT PARAMETERS:
- *    thread_dispatch - address of dispatching routine
+ *  INPUT PARAMETERS: NONE
  */
 
-
-void _CPU_Initialize(
-  void            (*thread_dispatch)      /* ignored on this CPU */
-)
+void _CPU_Initialize(void)
 {
   /*
    *  If something happened where the public Context_Control is not
@@ -295,19 +291,6 @@ void _CPU_Initialize(
     _CPU_Fatal_error(0x100 + 1);
 
   /*
-   *  The thread_dispatch argument is the address of the entry point
-   *  for the routine called at the end of an ISR once it has been
-   *  decided a context switch is necessary.  On some compilation
-   *  systems it is difficult to call a high-level language routine
-   *  from assembly.  This allows us to trick these systems.
-   *
-   *  If you encounter this problem save the entry point in a CPU
-   *  dependent variable.
-   */
-
-  _CPU_Thread_dispatch_pointer = thread_dispatch;
-
-  /*
    * XXX; If there is not an easy way to initialize the FP context
    *      during Context_Initialize, then it is usually easier to
    *      save an "uninitialized" FP context here and copy it to
diff --git a/cpukit/score/cpu/unix/rtems/score/cpu.h b/cpukit/score/cpu/unix/rtems/score/cpu.h
index 4734539173..0503018d2f 100644
--- a/cpukit/score/cpu/unix/rtems/score/cpu.h
+++ b/cpukit/score/cpu/unix/rtems/score/cpu.h
@@ -529,18 +529,6 @@ SCORE_EXTERN void               *_CPU_Interrupt_stack_low;
 SCORE_EXTERN void               *_CPU_Interrupt_stack_high;
 
 /*
- *  With some compilation systems, it is difficult if not impossible to
- *  call a high-level language routine from assembly language.  This
- *  is especially true of commercial Ada compilers and name mangling
- *  C++ ones.  This variable can be optionally defined by the CPU porter
- *  and contains the address of the routine _Thread_Dispatch.  This
- *  can make it easier to invoke that routine at the end of the interrupt
- *  sequence (if a dispatch is necessary).
- */
-
-SCORE_EXTERN void           (*_CPU_Thread_dispatch_pointer)(void);
-
-/*
  *  Nothing prevents the porter from declaring more CPU specific variables.
  */
 
@@ -875,9 +863,7 @@ extern void _CPU_Context_Initialize(
  *  This routine performs CPU dependent initialization.
  */
 
-void _CPU_Initialize(
-  void      (*thread_dispatch)
-);
+void _CPU_Initialize(void);
 
 /*
  *  _CPU_ISR_install_raw_handler