forked from Imagelibrary/rtems
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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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 & Co. KG
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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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