nes-proj/core/sys/loader.h

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/** \addtogroup sys
* @{
*/
/**
* \defgroup loader The Contiki program loader
*
* The Contiki program loader is an abstract interface for loading and
* starting programs.
*
* @{
*/
/**
* \file
* Default definitions and error values for the Contiki program loader.
* \author Adam Dunkels <adam@dunkels.com>
*
*/
/*
* Copyright (c) 2003, Adam Dunkels.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This file is part of the Contiki desktop OS
*
* $Id: loader.h,v 1.1 2006/06/17 22:41:20 adamdunkels Exp $
*
*/
#ifndef __LOADER_H__
#define __LOADER_H__
/* Errors that the LOADER_LOAD() function may return: */
#define LOADER_OK 0 /**< No error. */
#define LOADER_ERR_READ 1 /**< Read error. */
#define LOADER_ERR_HDR 2 /**< Header error. */
#define LOADER_ERR_OS 3 /**< Wrong OS. */
#define LOADER_ERR_FMT 4 /**< Data format error. */
#define LOADER_ERR_MEM 5 /**< Not enough memory. */
#define LOADER_ERR_OPEN 6 /**< Could not open file. */
#define LOADER_ERR_ARCH 7 /**< Wrong architecture. */
#define LOADER_ERR_VERSION 8 /**< Wrong OS version. */
#define LOADER_ERR_NOLOADER 9 /**< Program loading not supported. */
#ifdef LOADER_CONF_ARCH
#include LOADER_CONF_ARCH
#endif /* LOADER_CONF_ARCH */
/**
* Load and execute a program.
*
* This macro is used for loading and executing a program, and
* requires support from the architecture dependant code. The actual
* program loading is made by architecture specific functions.
*
* \note A program loaded with LOADER_LOAD() must call the
* LOADER_UNLOAD() function to unload itself.
*
* \param name The name of the program to be loaded.
*
* \param arg A pointer argument that is passed to the program.
*
* \return A loader error, or LOADER_OK if loading was successful.
*/
#ifndef LOADER_LOAD
#define LOADER_LOAD(name, arg) LOADER_ERR_NOLOADER
#endif /* LOADER_LOAD */
/**
* Unload a program from memory.
*
* This macro is used for unloading a program and deallocating any
* memory that was allocated during the loading of the program. This
* function must be called by the program itself.
*
*/
#ifndef LOADER_UNLOAD
#define LOADER_UNLOAD()
#endif /* LOADER_UNLOAD */
/**
* Load a DSC (program description).
*
* Loads a DSC (program description) into memory and returns a pointer
* to the dsc.
*
* \return A pointer to the DSC or NULL if it could not be loaded.
*/
#ifndef LOADER_LOAD_DSC
#define LOADER_LOAD_DSC(name) NULL
#endif /* LOADER_LOAD_DSC */
/**
* Unload a DSC (program description).
*
* Unload a DSC from memory and deallocate any memory that was
* allocated when it was loaded.
*/
#ifndef LOADER_UNLOAD_DSC
#define LOADER_UNLOAD_DSC(dsc)
#endif /* LOADER_UNLOAD */
#endif /* __LOADER_H__ */
/** @} */
/** @} */