2010-12-29 Sebastian Huber <sebastian.huber@embedded-brains.de>

	* shared/include/start.h, shared/src/bsp-start-zero.S: New files.

1 files changed, 86 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/powerpc/shared/include/start.h b/c/src/lib/libbsp/powerpc/shared/include/start.h
new file mode 100644
index 0000000000..18574e4ba9
--- /dev/null
+++ b/c/src/lib/libbsp/powerpc/shared/include/start.h
@@ -0,0 +1,86 @@
+/**
+ * @file
+ *
+ * @ingroup bsp_start
+ *
+ * @brief System low level start.
+ */
+
+/*
+ * Copyright (c) 2010 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Obere Lagerstr. 30
+ *  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.com/license/LICENSE.
+ *
+ * $Id$
+ */
+
+#ifndef LIBBSP_POWERPC_SHARED_START_H
+#define LIBBSP_POWERPC_SHARED_START_H
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * @defgroup bsp_start System Start
+ *
+ * @ingroup bsp_kit
+ *
+ * @brief System low level start.
+ *
+ * @{
+ */
+
+#define BSP_START_TEXT_SECTION __attribute__((section(".bsp_start_text")))
+
+#define BSP_START_DATA_SECTION __attribute__((section(".bsp_start_data")))
+
+/**
+* @brief System start entry.
+*/
+void _start(void);
+
+/**
+ * Zeros @a byte_count bytes starting at @a begin.
+ *
+ * It wraps around in case of an address overflow.  The stack will not be used.
+ * The code is position independent.  It uses the data cache block zero
+ * instruction in case the data cache is enabled.  There are no alignment
+ * constains for @a begin and @a byte_count.
+ *
+ * @see bsp_start_zero_begin, bsp_start_zero_end, and bsp_start_zero_size.
+ */
+void BSP_START_TEXT_SECTION bsp_start_zero(void *begin, size_t byte_count);
+
+/**
+ * @brief Symbol which equals the bsp_start_zero() code begin.
+ */
+extern char bsp_start_zero_begin [];
+
+/**
+ * @brief Symbol which equals the bsp_start_zero() code end.
+ */
+extern char bsp_start_zero_end [];
+
+/**
+ * @brief Symbol which equals the bsp_start_zero() code size.
+ */
+extern char bsp_start_zero_size [];
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* LIBBSP_POWERPC_SHARED_START_H */