score: Canonicalize _CPU_Fatal_halt()

Move _CPU_Fatal_halt() declaration to <rtems/score/cpuimpl.h> and make sure it
is a proper declaration of a function which does not return.  Fix the type of
the error code.  If necessary, add the implementation to cpu.c.  Implementing
_CPU_Fatal_halt() as a function makes it possible to wrap this function for
example to fully test _Terminate().

1 files changed, 18 insertions, 2 deletions

diff --git a/cpukit/score/cpu/arm/cpu.c b/cpukit/score/cpu/arm/cpu.c
index 07b9588afd..d3471dc99f 100644
--- a/cpukit/score/cpu/arm/cpu.c
+++ b/cpukit/score/cpu/arm/cpu.c
@@ -26,8 +26,7 @@
 #include "config.h"
 #endif
 
-#include <rtems/score/assert.h>
-#include <rtems/score/cpu.h>
+#include <rtems/score/cpuimpl.h>
 #include <rtems/score/thread.h>
 #include <rtems/score/tls.h>
 
@@ -171,3 +170,20 @@ void _CPU_Initialize( void )
 }
 
 #endif /* ARM_MULTILIB_ARCH_V4 */
+
+void _CPU_Fatal_halt( uint32_t source, CPU_Uint32ptr error )
+{
+  ISR_Level level;
+
+  _CPU_ISR_Disable( level );
+  (void) level;
+
+  __asm__ volatile ("mov r0, %0\n"
+                : "=r" (error)
+                : "0" (error)
+                : "r0" );
+
+  while ( true ) {
+    /* Do nothing */
+  }
+}