/**********************************************************************
* pfwlineno.c
* Write line number data to a POFF file
*
* Copyright (C) 2008-2009 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 <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
***********************************************************************/
static void poffCheckLineNumberAllocation(poffInfo_t *poffInfo)
{
/* Check if we have allocated a line number buffer yet */
if (!poffInfo->lineNumberTable)
{
/* No, allocate it now */
poffInfo->lineNumberTable = (uint8_t*)
malloc(INITIAL_LINENUMBER_TABLE_SIZE);
if (!poffInfo->lineNumberTable)
{
fatal(eNOMEMORY);
}
poffInfo->lineNumberSection.sh_size = 0;
poffInfo->lineNumberTableAlloc = INITIAL_LINENUMBER_TABLE_SIZE;
}
}
/***********************************************************************/
static void poffCheckLineNumberReallocation(poffInfo_t *poffInfo)
{
if (poffInfo->lineNumberSection.sh_size + sizeof(poffLineNumber_t) >
poffInfo->lineNumberTableAlloc)
{
uint32_t newAlloc =
poffInfo->lineNumberTableAlloc +
LINENUMBER_TABLE_INCREMENT;
void *tmp;
/* Reallocate the line number buffer */
tmp = realloc(poffInfo->lineNumberTable, newAlloc);
if (!tmp)
{
fatal(eNOMEMORY);
}
/* And set the new size */
poffInfo->lineNumberTableAlloc = newAlloc;
poffInfo->lineNumberTable = (uint8_t*)tmp;
}
}
/***********************************************************************
* Public Functions
***********************************************************************/
/***********************************************************************/
/* Add a line number to the line number table. Returns index value
* associated with the line number entry in the line number table.
*/
uint32_t poffAddLineNumber(poffHandle_t handle,
uint16_t lineNumber, uint16_t fileNumber,
uint32_t progSectionDataOffset)
{
poffInfo_t *poffInfo = (poffInfo_t*)handle;
poffLineNumber_t *pln;
uint32_t index;
/* Verify that the line number table has been allocated */
poffCheckLineNumberAllocation(poffInfo);
/* Verify that the line number table is large enough to hold
* information about another line.
*/
poffCheckLineNumberReallocation(poffInfo);
/* Save the line number information in the line number table */
index = poffInfo->lineNumberSection.sh_size;
pln = (poffLineNumber_t*)&poffInfo->lineNumberTable[index];
pln->ln_lineno = lineNumber;
pln->ln_fileno = fileNumber;
pln->ln_poffset = progSectionDataOffset;
/* Set the new size of the line number table */
poffInfo->lineNumberSection.sh_size += sizeof(poffLineNumber_t);
return index;
}
/***********************************************************************/
