1 files changed, 24 insertions, 0 deletions
diff --git a/cpukit/score/cpu/powerpc/rtems/score/cpu.h b/cpukit/score/cpu/powerpc/rtems/score/cpu.h
index 45b8827235..647c665ee6 100644
--- a/cpukit/score/cpu/powerpc/rtems/score/cpu.h
+++ b/cpukit/score/cpu/powerpc/rtems/score/cpu.h
@@ -769,6 +769,30 @@ static inline uint32_t CPU_swap_u32(
 #define CPU_swap_u16( value ) \
   (((value&0xff) << 8) | ((value >> 8)&0xff))
 
+typedef uint32_t CPU_Counter_ticks;
+
+static inline CPU_Counter_ticks _CPU_Counter_read( void )
+{
+  CPU_Counter_ticks value;
+
+#ifdef ppc8540
+  /* Book E has no mftb */
+  __asm__ volatile( "mfspr %0, 268" : "=r" (value) );
+#else
+  __asm__ volatile( "mftb %0" : "=r" (value) );
+#endif
+
+  return value;
+}
+
+static inline CPU_Counter_ticks _CPU_Counter_difference(
+  CPU_Counter_ticks second,
+  CPU_Counter_ticks first
+)
+{
+  return second - first;
+}
+
 #endif /* ASM */