1 files changed, 90 insertions, 0 deletions
diff --git a/cpukit/score/cpu/sparc/rtems/score/sparcimpl.h b/cpukit/score/cpu/sparc/rtems/score/sparcimpl.h
new file mode 100644
index 0000000000..9f9999b063
--- /dev/null
+++ b/cpukit/score/cpu/sparc/rtems/score/sparcimpl.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2016 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef _RTEMS_SCORE_SPARCIMPL_H
+#define _RTEMS_SCORE_SPARCIMPL_H
+
+#include <rtems/score/cpu.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/*
+ * Provides a mutable alias to _SPARC_Counter for use in
+ * _SPARC_Counter_initialize().  The _SPARC_Counter and _SPARC_Counter_mutable
+ * are defined via the SPARC_COUNTER_DEFINITION define.
+ */
+extern SPARC_Counter _SPARC_Counter_mutable;
+
+CPU_Counter_ticks _SPARC_Counter_read_address( void );
+
+CPU_Counter_ticks _SPARC_Counter_read_asr23( void );
+
+CPU_Counter_ticks _SPARC_Counter_difference_normal(
+  CPU_Counter_ticks second,
+  CPU_Counter_ticks first
+);
+
+CPU_Counter_ticks _SPARC_Counter_difference_clock_period(
+  CPU_Counter_ticks second,
+  CPU_Counter_ticks first
+);
+
+/*
+ * Returns always a value of one regardless of the parameters.  This prevents
+ * an infinite loop in rtems_counter_delay_ticks().  Its only a reasonably safe
+ * default.
+ */
+CPU_Counter_ticks _SPARC_Counter_difference_one(
+  CPU_Counter_ticks second,
+  CPU_Counter_ticks first
+);
+
+static inline void _SPARC_Counter_initialize(
+  SPARC_Counter_read                counter_read,
+  SPARC_Counter_difference          counter_difference,
+  volatile const CPU_Counter_ticks *counter_address
+)
+{
+  _SPARC_Counter_mutable.counter_read = counter_read;
+  _SPARC_Counter_mutable.counter_difference = counter_difference;
+  _SPARC_Counter_mutable.counter_address = counter_address;
+}
+
+/*
+ * Defines the _SPARC_Counter and _SPARC_Counter_mutable global variables.
+ * Place this define in the global file scope of the CPU counter support file
+ * of the BSP.
+ */
+#define SPARC_COUNTER_DEFINITION \
+  __asm__ ( \
+    "\t.global\t_SPARC_Counter\n" \
+    "\t.global\t_SPARC_Counter_mutable\n" \
+    "\t.section\t.data._SPARC_Counter,\"aw\",@progbits\n" \
+    "\t.align\t4\n" \
+    "\t.type\t_SPARC_Counter, #object\n" \
+    "\t.size\t_SPARC_Counter, 12\n" \
+    "_SPARC_Counter:\n" \
+    "_SPARC_Counter_mutable:\n" \
+    "\t.long\t_SPARC_Counter_read_address\n" \
+    "\t.long\t_SPARC_Counter_difference_one\n" \
+    "\t.long\t_SPARC_Counter\n" \
+  )
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* _RTEMS_SCORE_SPARCIMPL_H */