forked from Archive/PX4-Autopilot
129 lines
4.8 KiB
C
129 lines
4.8 KiB
C
/**********************************************************************
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* pfrlineno.c
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* Read line number data from a POFF file
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*
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* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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**********************************************************************/
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/**********************************************************************
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* Included Files
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**********************************************************************/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include "keywords.h" /* Standard types */
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#include "pedefs.h" /* error code definitions */
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#include "perr.h" /* error() */
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#include "pofflib.h" /* POFF library interface */
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#include "pfprivate.h" /* POFF private definitions */
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/**********************************************************************
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* Pre-processor Definitions
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**********************************************************************/
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/**********************************************************************
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* Global Variables
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**********************************************************************/
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/**********************************************************************
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* Private Variables
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**********************************************************************/
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/***********************************************************************
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* Private Function Prototypes
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***********************************************************************/
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/***********************************************************************
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* Private Functions
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***********************************************************************/
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/***********************************************************************
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* Public Functions
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***********************************************************************/
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/***********************************************************************/
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int32_t poffGetLineNumber(poffHandle_t handle, poffLibLineNumber_t *lineno)
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{
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poffInfo_t *poffInfo = (poffInfo_t*)handle;
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poffLineNumber_t *pln;
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uint32_t stringTableIndex;
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uint32_t lineNumberIndex;
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/* First, check if there is another line number in the table to be had.
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* This check is a little sloppy in that it assumes the the size in
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* in the header is an even multiple of line number table entries
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*/
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lineNumberIndex = poffInfo->lineNumberIndex;
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if (lineNumberIndex >= poffInfo->lineNumberSection.sh_size)
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{
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/* Return -1 to signal the end of the list */
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memset(lineno, 0, sizeof(poffLibLineNumber_t));
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return -1;
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}
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else
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{
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/* Get a reference to the line number record */
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pln = (poffLineNumber_t*)&poffInfo->lineNumberTable[lineNumberIndex];
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/* Get the filename table index */
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if (pln->ln_fileno * sizeof(poffFileTab_t) >
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poffInfo->fileNameTableSection.sh_size)
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{
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fatal(ePOFFCONFUSION);
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}
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stringTableIndex = (uint32_t)poffInfo->fileNameTable[pln->ln_fileno];
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/* Return the line number information */
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lineno->lineno = pln->ln_lineno;
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lineno->offset = pln->ln_poffset;
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lineno->filename = poffGetString(handle, stringTableIndex);
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/* Set up for the next read */
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poffInfo->lineNumberIndex += poffInfo->lineNumberSection.sh_entsize;
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return lineNumberIndex;
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}
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}
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/***********************************************************************/
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