forked from Archive/PX4-Autopilot
109 lines
4.2 KiB
C
109 lines
4.2 KiB
C
/**********************************************************************
|
|
* pfrsymbol
|
|
* Read symbols from a POFF file
|
|
*
|
|
* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* 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 <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
#include "keywords.h" /* Standard types */
|
|
#include "pedefs.h" /* error code definitions */
|
|
|
|
#include "perr.h" /* error() */
|
|
#include "pofflib.h" /* POFF library interface */
|
|
#include "pfprivate.h" /* POFF private definitions */
|
|
|
|
/**********************************************************************
|
|
* Pre-processor Definitions
|
|
**********************************************************************/
|
|
|
|
/**********************************************************************
|
|
* Global Variables
|
|
**********************************************************************/
|
|
|
|
/**********************************************************************
|
|
* Private Variables
|
|
**********************************************************************/
|
|
|
|
/***********************************************************************
|
|
* Private Function Prototypes
|
|
***********************************************************************/
|
|
|
|
/***********************************************************************
|
|
* Private Functions
|
|
***********************************************************************/
|
|
|
|
/***********************************************************************/
|
|
|
|
int32_t poffGetSymbol(poffHandle_t handle, poffLibSymbol_t *symbol)
|
|
{
|
|
poffInfo_t *poffInfo = (poffInfo_t*)handle;
|
|
poffSymbol_t *psym;
|
|
uint32_t index;
|
|
|
|
/* First, check if there is another symbol in the table to be had.
|
|
* This check is a little sloppy in that it assumes the the size in
|
|
* in the section header is an even multiple of symbol table entries
|
|
*/
|
|
|
|
index = poffInfo->symbolIndex;
|
|
if (index >= poffInfo->symbolTableSection.sh_size)
|
|
{
|
|
memset(symbol, 0, sizeof(poffLibSymbol_t));
|
|
return -1;
|
|
}
|
|
else
|
|
{
|
|
psym = (poffSymbol_t*)&poffInfo->symbolTable[index];
|
|
symbol->type = psym->st_type;
|
|
symbol->align = psym->st_align;
|
|
symbol->flags = psym->st_flags;
|
|
symbol->name = poffGetString(handle, psym->st_name);
|
|
symbol->value = psym->st_value;
|
|
symbol->size = psym->st_size;
|
|
|
|
poffInfo->symbolIndex += poffInfo->symbolTableSection.sh_entsize;
|
|
return index / poffInfo->symbolTableSection.sh_entsize;
|
|
}
|
|
}
|
|
|
|
/***********************************************************************/
|