1 files changed, 78 insertions, 0 deletions
diff --git a/bsps/powerpc/include/bsp/tictac.h b/bsps/powerpc/include/bsp/tictac.h
new file mode 100644
index 0000000000..31c7386943
--- /dev/null
+++ b/bsps/powerpc/include/bsp/tictac.h
@@ -0,0 +1,78 @@
+/**
+ * @file
+ *
+ * @ingroup powerpc_shared
+ *
+ * @brief Header file for tic-tac code.
+ */
+
+/*
+ * Copyright (c) 2008
+ * Embedded Brains GmbH
+ * Obere Lagerstr. 30
+ * D-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.
+ */
+
+/**
+ * @brief Reset reference ticks for tac().
+ */
+static inline void tic()
+{
+	uint32_t tmp;
+	asm volatile (
+		"mftb 0;"
+		"stw 0, ppc_tic_tac@sdarel(13);"
+		: "=r" (tmp)
+	);
+}
+
+/**
+ * @brief Returns number of ticks since last tic().
+ */
+static inline uint32_t tac()
+{
+	uint32_t ticks;
+	uint32_t tmp;
+	asm volatile (
+		"mftb %0;"
+		"lwz %1, ppc_tic_tac@sdarel(13);"
+		"subf %0, %1, %0;"
+		: "=r" (ticks), "=r" (tmp)
+	);
+	return ticks;
+}
+
+/**
+ * @brief Reset reference ticks for bam().
+ */
+static inline void boom()
+{
+	uint32_t tmp;
+	asm volatile (
+		"mftb 0;"
+		"stw 0, ppc_boom_bam@sdarel(13);"
+		: "=r" (tmp)
+	);
+}
+
+/**
+ * @brief Returns number of ticks since last boom().
+ */
+static inline uint32_t bam()
+{
+	uint32_t ticks;
+	uint32_t tmp;
+	asm volatile (
+		"mftb %0;"
+		"lwz %1, ppc_boom_bam@sdarel(13);"
+		"subf %0, %1, %0;"
+		: "=r" (ticks), "=r" (tmp)
+	);
+	return ticks;
+}