/**********************************************************************
* pfwrodata.c
* Write to the RODATA section of 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 uint16_t poffCheckRoDataAlloc(poffInfo_t *poffInfo)
{
if (!poffInfo->roDataSectionData)
{
/* No, allocate it now */
poffInfo->roDataSectionData = (uint8_t*)malloc(INITIAL_RODATA_SECTION_SIZE);
if (!poffInfo->roDataSectionData)
{
return eNOMEMORY;
}
poffInfo->roDataSection.sh_size = 0;
poffInfo->roDataSectionAlloc = INITIAL_RODATA_SECTION_SIZE;
}
return eNOERROR;
}
static uint16_t poffCheckRoDataRealloc(poffInfo_t *poffInfo, uint16_t len)
{
/* Check if there is room for the new data */
if (poffInfo->roDataSection.sh_size + len > poffInfo->roDataSectionAlloc)
{
uint32_t newAlloc;
void *tmp;
/* Make certain that this is big enough (it should be) */
newAlloc = poffInfo->roDataSectionAlloc + RODATA_SECTION_INCREMENT;
while (poffInfo->roDataSection.sh_size + len > newAlloc)
{
newAlloc += RODATA_SECTION_INCREMENT;
}
/* Reallocate the roDataram data section buffer */
tmp = realloc(poffInfo->roDataSectionData, newAlloc);
if (!tmp)
{
return eNOMEMORY;
}
/* And set the new size */
poffInfo->roDataSectionAlloc = newAlloc;
poffInfo->roDataSectionData = (uint8_t*)tmp;
}
return eNOERROR;
}
/***********************************************************************
* Public Functions
***********************************************************************/
#if 0 /* Not used */
uint32_t poffAddRoDataByte(poffHandle_t handle, uint8_t dataByte)
{
poffInfo_t *poffInfo = (poffInfo_t*)handle;
uint32_t offset;
uint16_t errCode;
/* Check if we have allocated a data section buffer yet */
errCode = poffCheckRoDataAlloc(poffInfo);
if (errCode != eNOERROR)
{
fatal(errCode);
}
/* Check if there is room for a new byte */
errCode = poffCheckRoDataRealloc(poffInfo, 1);
/* Copy data section byte into the data section buffer */
offset = poffInfo->roDataSection.sh_size;
poffInfo->roDataSectionData[offset] = dataByte;
/* Set the new size of the string table */
poffInfo->roDataSection.sh_size++;
return offset;
}
#endif
/***********************************************************************/
uint32_t poffAddRoDataString(poffHandle_t handle, const char *string)
{
poffInfo_t *poffInfo = (poffInfo_t*)handle;
uint32_t len;
uint32_t offset;
uint16_t errCode;
/* Check if we have allocated a data section buffer yet */
errCode = poffCheckRoDataAlloc(poffInfo);
if (errCode != eNOERROR)
{
fatal(errCode);
}
/* Check if there is room for a new byte */
len = strlen(string) + 1;
errCode = poffCheckRoDataRealloc(poffInfo, len);
/* Copy data section byte into the data section buffer */
offset = poffInfo->roDataSection.sh_size;
memcpy(&poffInfo->roDataSectionData[offset], string, len);
/* Set the new size of the string table */
poffInfo->roDataSection.sh_size += len;
return offset;
}
/***********************************************************************/
