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/**********************************************************************
* pfrlineno.c
* Read line number data 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
***********************************************************************/
/***********************************************************************
* Public Functions
***********************************************************************/
/***********************************************************************/
int32_t poffGetLineNumber(poffHandle_t handle, poffLibLineNumber_t *lineno)
{
poffInfo_t *poffInfo = (poffInfo_t*)handle;
poffLineNumber_t *pln;
uint32_t stringTableIndex;
uint32_t lineNumberIndex;
/* First, check if there is another line number in the table to be had.
* This check is a little sloppy in that it assumes the the size in
* in the header is an even multiple of line number table entries
*/
lineNumberIndex = poffInfo->lineNumberIndex;
if (lineNumberIndex >= poffInfo->lineNumberSection.sh_size)
{
/* Return -1 to signal the end of the list */
memset(lineno, 0, sizeof(poffLibLineNumber_t));
return -1;
}
else
{
/* Get a reference to the line number record */
pln = (poffLineNumber_t*)&poffInfo->lineNumberTable[lineNumberIndex];
/* Get the filename table index */
if (pln->ln_fileno * sizeof(poffFileTab_t) >
poffInfo->fileNameTableSection.sh_size)
{
fatal(ePOFFCONFUSION);
}
stringTableIndex = (uint32_t)poffInfo->fileNameTable[pln->ln_fileno];
/* Return the line number information */
lineno->lineno = pln->ln_lineno;
lineno->offset = pln->ln_poffset;
lineno->filename = poffGetString(handle, stringTableIndex);
/* Set up for the next read */
poffInfo->lineNumberIndex += poffInfo->lineNumberSection.sh_entsize;
return lineNumberIndex;
}
}
/***********************************************************************/
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