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Diffstat (limited to 'cpukit/score/cpu/no_cpu/rtems/score/cpu.h')
-rw-r--r--cpukit/score/cpu/no_cpu/rtems/score/cpu.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/cpukit/score/cpu/no_cpu/rtems/score/cpu.h b/cpukit/score/cpu/no_cpu/rtems/score/cpu.h
index 5241b5ba5d..959fb58a6d 100644
--- a/cpukit/score/cpu/no_cpu/rtems/score/cpu.h
+++ b/cpukit/score/cpu/no_cpu/rtems/score/cpu.h
@@ -1462,6 +1462,24 @@ CPU_Counter_ticks _CPU_Counter_difference(
CPU_Counter_ticks first
);
+/**
+ * @brief Special register pointing to the per-CPU control of the current
+ * processor.
+ *
+ * This is optional. Not every CPU port needs this. It is only an optional
+ * optimization variant.
+ */
+register struct Per_CPU_Control *_CPU_Per_CPU_current asm( "rX" );
+
+/**
+ * @brief Optional method to obtain the per-CPU control of the current processor.
+ *
+ * This is optional. Not every CPU port needs this. It is only an optional
+ * optimization variant. In case this macro is undefined, the default
+ * implementation using the current processor index will be used.
+ */
+#define _CPU_Get_current_per_CPU_control() ( _CPU_Per_CPU_current )
+
#ifdef RTEMS_SMP
/**
* @brief Performs CPU specific SMP initialization in the context of the boot