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, 14 insertions, 0 deletions

diff --git a/cpukit/score/cpu/powerpc/cpu.c b/cpukit/score/cpu/powerpc/cpu.c
index 1367d9d2c0..41f1c202cc 100644
--- a/cpukit/score/cpu/powerpc/cpu.c
+++ b/cpukit/score/cpu/powerpc/cpu.c
@@ -325,3 +325,17 @@ RTEMS_STATIC_ASSERT(
   sizeof(CPU_Exception_frame) + FRAME_LINK_SPACE <= PPC_EXC_FRAME_SIZE,
   CPU_Exception_frame
 );
+
+void _CPU_Fatal_halt( uint32_t source, CPU_Uint32ptr error )
+{
+  ppc_interrupt_disable();
+  __asm__ volatile (
+    "mr 3, %0\n"
+    "mr 4, %1\n"
+    "1:\n"
+    "b 1b\n"
+    : \
+    : "r" (source), "r" (error)
+    : "memory"
+  );
+}