forked from Imagelibrary/rtems
85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
/**
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* @file
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*
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* @ingroup powerpc_start
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*
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* @brief System low level start.
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*/
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/*
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* Copyright (c) 2010 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Obere Lagerstr. 30
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#ifndef LIBBSP_POWERPC_SHARED_START_H
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#define LIBBSP_POWERPC_SHARED_START_H
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/**
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* @defgroup RTEMSBSPsPowerPCSharedStart PowerPC System Start
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*
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* @ingroup RTEMSBSPsPowerPCShared
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*
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* @brief PowerPC low level start.
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*
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* @{
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*/
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#define BSP_START_TEXT_SECTION __attribute__((section(".bsp_start_text")))
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#define BSP_START_DATA_SECTION __attribute__((section(".bsp_start_data")))
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/**
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* @brief System start entry.
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*/
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void _start(void);
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/**
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* Zeros @a byte_count bytes starting at @a begin.
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*
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* It wraps around in case of an address overflow. The stack will not be used.
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* The code is position independent. It uses the data cache block zero
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* instruction in case the data cache is enabled. There are no alignment
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* constains for @a begin and @a byte_count.
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*
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* @see bsp_start_zero_begin, bsp_start_zero_end, and bsp_start_zero_size.
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*/
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void BSP_START_TEXT_SECTION bsp_start_zero(void *begin, size_t byte_count);
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/**
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* @brief Symbol which equals the bsp_start_zero() code begin.
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*/
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extern char bsp_start_zero_begin [];
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/**
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* @brief Symbol which equals the bsp_start_zero() code end.
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*/
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extern char bsp_start_zero_end [];
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/**
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* @brief Symbol which equals the bsp_start_zero() code size.
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*/
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extern char bsp_start_zero_size [];
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/** @} */
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* LIBBSP_POWERPC_SHARED_START_H */
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