101 lines
3.9 KiB
C
101 lines
3.9 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2005, Swedish Institute of Computer Science
|
||
|
|
* Copyright (c) 2007, Simon Berg
|
||
|
|
* 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. Neither the name of the Institute nor the names of its contributors
|
||
|
|
* may be used to endorse or promote products derived from this software
|
||
|
|
* without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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 operating system.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* \addtogroup elfloader
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \defgroup elfloaderarch Architecture specific functionality for the ELF loader.
|
||
|
|
*
|
||
|
|
* The architecture specific functionality for the Contiki ELF loader
|
||
|
|
* has to be implemented for each processor type Contiki runs on.
|
||
|
|
*
|
||
|
|
* Since the ELF format is slightly different for different processor
|
||
|
|
* types, the Contiki ELF loader is divided into two parts: the
|
||
|
|
* generic ELF loader module (\ref elfloader) and the architecture
|
||
|
|
* specific part (this module). The architecture specific part deals
|
||
|
|
* with memory allocation, code and data relocation, and writing the
|
||
|
|
* relocated ELF code into program memory.
|
||
|
|
*
|
||
|
|
* To port the Contiki ELF loader to a new processor type, this module
|
||
|
|
* has to be implemented for the new processor type.
|
||
|
|
*
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \file
|
||
|
|
* Header file for the architecture specific parts of the Contiki ELF loader.
|
||
|
|
*
|
||
|
|
* \author
|
||
|
|
* Adam Dunkels <adam@sics.se>
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __ELFLOADER_ARCH_H__
|
||
|
|
#define __ELFLOADER_ARCH_H__
|
||
|
|
|
||
|
|
#include "elfloader-otf.h"
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* \brief Perform a relocation.
|
||
|
|
* \param output The output object for the segment.
|
||
|
|
* \param sectionoffset The file offset at which the relocation can be found.
|
||
|
|
* \param sectionaddr The section start address (absolute runtime).
|
||
|
|
* \param rela A pointer to an ELF32 rela structure (struct elf32_rela).
|
||
|
|
* \param addr The relocated address.
|
||
|
|
*
|
||
|
|
* This function is called from the Contiki ELF loader to
|
||
|
|
* perform a relocation on a piece of code or data. The
|
||
|
|
* relocated address is calculated by the Contiki ELF
|
||
|
|
* loader, based on information in the ELF file, and it is
|
||
|
|
* the responsibility of this function to patch the
|
||
|
|
* executable code. The Contiki ELF loader passes a
|
||
|
|
* pointer to an ELF32 rela structure (struct elf32_rela)
|
||
|
|
* that contains information about how to patch the
|
||
|
|
* code. This information is different from processor to
|
||
|
|
* processor.
|
||
|
|
*/
|
||
|
|
int elfloader_arch_relocate(int input_fd,
|
||
|
|
struct elfloader_output *output,
|
||
|
|
unsigned int sectionoffset,
|
||
|
|
char *sectionaddr,
|
||
|
|
struct elf32_rela *rela, char *addr);
|
||
|
|
|
||
|
|
#endif /* __ELFLOADER_ARCH_H__ */
|
||
|
|
|
||
|
|
/** @} */
|
||
|
|
/** @} */
|