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/**
* @file
*
* @ingroup powerpc_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.org/license/LICENSE.
*/
#ifndef LIBBSP_POWERPC_SHARED_START_H
#define LIBBSP_POWERPC_SHARED_START_H
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* @defgroup powerpc_start PowerPC System Start
*
* @ingroup powerpc_shared
*
* @brief PowerPC 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 */
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