/**********************************************************************
* pfhandle.c
* POFF library global variables
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 NuttX 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 COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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.
*
**********************************************************************/
/**********************************************************************
* Included Files
**********************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "keywords.h" /* Standard types */
#include "pfprivate.h" /* POFF private definitions */
#include "pofflib.h" /* Public interfaces */
/**********************************************************************
* Definitions
**********************************************************************/
/**********************************************************************
* Global Variables
**********************************************************************/
/**********************************************************************
* Private Variables
**********************************************************************/
/***********************************************************************
* Private Function Prototypes
***********************************************************************/
/***********************************************************************
* Private Functions
***********************************************************************/
/***********************************************************************
* Public Functions
***********************************************************************/
/***********************************************************************/
/* Set all global data structures to a known state */
poffHandle_t poffCreateHandle(void)
{
poffInfo_t *poffInfo;
/* Create a new POFF handle */
poffInfo = (poffInfo_t*)malloc(sizeof(poffInfo_t));
if (poffInfo != NULL)
{
/* Set everthing to zero */
memset(poffInfo, 0, sizeof(poffInfo_t));
/* Initialize POFF file header */
poffInfo->fileHeader.fh_ident[FHI_MAG0] = FHI_POFF_MAG0;
poffInfo->fileHeader.fh_ident[FHI_MAG1] = FHI_POFF_MAG1;
poffInfo->fileHeader.fh_ident[FHI_MAG2] = FHI_POFF_MAG2;
poffInfo->fileHeader.fh_ident[FHI_MAG3] = FHI_POFF_MAG3;
poffInfo->fileHeader.fh_version = FHV_CURRENT;
poffInfo->fileHeader.fh_shsize = sizeof(poffSectionHeader_t);
poffInfo->fileHeader.fh_shoff = sizeof(poffFileHeader_t);
/* Initialize the program section header */
poffInfo->progSection.sh_type = SHT_PROGDATA;
poffInfo->progSection.sh_flags = SHF_ALLOC | SHF_EXEC;
/* Initialize the initialized data section header */
poffInfo->roDataSection.sh_type = SHT_PROGDATA;
poffInfo->roDataSection.sh_flags = SHF_WRITE | SHF_ALLOC;
/* Initialize the symbol table section header */
poffInfo->symbolTableSection.sh_type = SHT_SYMTAB;
poffInfo->symbolTableSection.sh_entsize = sizeof(poffSymbol_t);
/* Initialize the string table section header */
poffInfo->stringTableSection.sh_type = SHT_STRTAB;
/* Initialize the relocation table section header */
poffInfo->relocSection.sh_type = SHT_REL;
poffInfo->relocSection.sh_entsize = sizeof(poffRelocation_t);
/* Initialize the file table section header */
poffInfo->fileNameTableSection.sh_type = SHT_FILETAB;
poffInfo->fileNameTableSection.sh_entsize = sizeof(poffFileTab_t);
/* Initialize the line number section header */
poffInfo->lineNumberSection.sh_type = SHT_LINENO;
poffInfo->lineNumberSection.sh_entsize = sizeof(poffLineNumber_t);
/* Initialize the debug function info section header */
poffInfo->debugFuncSection.sh_type = SHT_DEBUG;
poffInfo->debugFuncSection.sh_entsize = sizeof(poffDebugFuncInfo_t);
}
return poffInfo;
}
/***********************************************************************/
void poffDestroyHandle(poffHandle_t handle)
{
poffInfo_t *poffInfo = (poffInfo_t*)handle;
/* Free all of the allocated, in-memory data */
if (poffInfo->progSectionData)
free(poffInfo->progSectionData);
if (poffInfo->roDataSectionData)
free(poffInfo->roDataSectionData);
if (poffInfo->symbolTable)
free(poffInfo->symbolTable);
if (poffInfo->stringTable)
free(poffInfo->stringTable);
if (poffInfo->relocTable)
free(poffInfo->relocTable);
if (poffInfo->fileNameTable)
free(poffInfo->fileNameTable);
if (poffInfo->lineNumberTable)
free(poffInfo->lineNumberTable);
if (poffInfo->debugFuncTable)
free(poffInfo->debugFuncTable);
/* Free the container */
free(handle);
}
/***********************************************************************/
void poffResetAccess(poffHandle_t handle)
{
poffInfo_t *poffInfo = (poffInfo_t*)handle;
/* Reset read/write indices */
poffInfo->symbolIndex = 0;
poffInfo->progSectionIndex = 0;
poffInfo->relocIndex = 0;
poffInfo->fileNameIndex = 0;
poffInfo->lineNumberIndex = 0;
poffInfo->debugFuncIndex = 0;
}
/***********************************************************************/
