/**********************************************************************
* pftprog.c
* Program data manipulations on POFF temporary object
*
* Copyright (C) 2008 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "keywords.h" /* Standard types */
#include "pedefs.h" /* Pascal error codes */
#include "pfprivate.h" /* POFF private definitions */
#include "pofflib.h" /* Public interfaces */
/**********************************************************************
* Definitions
**********************************************************************/
/**********************************************************************
* Global Variables
**********************************************************************/
/**********************************************************************
* Private Variables
**********************************************************************/
/***********************************************************************
* Private Function Prototypes
***********************************************************************/
/***********************************************************************
* Private Functions
***********************************************************************/
static uint16 poffCheckProgAlloc(poffProgInfo_t *poffProgInfo)
{
if (!poffProgInfo->progSectionData)
{
/* No, allocate it now */
poffProgInfo->progSectionData = (char*)malloc(INITIAL_PROG_SECTION_SIZE);
if (!poffProgInfo->progSectionData)
{
return eNOMEMORY;
}
poffProgInfo->progSectionSize = 0;
poffProgInfo->progSectionAlloc = INITIAL_PROG_SECTION_SIZE;
}
return eNOERROR;
}
static uint16 poffCheckProgRealloc(poffProgInfo_t *poffProgInfo, uint16 len)
{
/* Check if there is room for the new data */
if (poffProgInfo->progSectionSize + len > poffProgInfo->progSectionAlloc)
{
uint32 newAlloc =
poffProgInfo->progSectionAlloc + PROG_SECTION_INCREMENT;
void *tmp;
/* Make certain that this is big enough (it should be) */
while (poffProgInfo->progSectionSize + len > newAlloc)
{
newAlloc += PROG_SECTION_INCREMENT;
}
/* Reallocate the program data section buffer */
tmp = realloc(poffProgInfo->progSectionData, newAlloc);
if (!tmp)
{
return eNOMEMORY;
}
/* And set the new size */
poffProgInfo->progSectionAlloc = newAlloc;
poffProgInfo->progSectionData = (ubyte*)tmp;
}
return eNOERROR;
}
/***********************************************************************
* Public Functions
***********************************************************************/
uint16 poffAddTmpProgByte(poffProgHandle_t handle, ubyte progByte)
{
poffProgInfo_t *poffProgInfo = (poffProgInfo_t*)handle;
uint16 errCode;
/* Check if we have allocated a program section buffer yet */
errCode = poffCheckProgAlloc(poffProgInfo);
if (errCode != eNOERROR)
{
return errCode;
}
/* Check if there is room for the new byte */
errCode = poffCheckProgRealloc(poffProgInfo, 1);
if (errCode != eNOERROR)
{
return errCode;
}
/* Copy program data byte into the program data buffer */
poffProgInfo->progSectionData[poffProgInfo->progSectionSize] = progByte;
/* Set the new size of the string table */
poffProgInfo->progSectionSize++;
return eNOERROR;
}
/***********************************************************************/
uint16 poffWriteTmpProgBytes(ubyte *buffer, uint32 nbytes,
poffProgHandle_t handle)
{
poffProgInfo_t *poffProgInfo = (poffProgInfo_t*)handle;
uint16 errCode;
/* Check if we have allocated a program section buffer yet */
errCode = poffCheckProgAlloc(poffProgInfo);
if (errCode != eNOERROR)
{
return errCode;
}
/* Check if there is room for the new data */
errCode = poffCheckProgRealloc(poffProgInfo, nbytes);
if (errCode != eNOERROR)
{
return errCode;
}
/* Copy program data byte into the program data buffer */
memcpy(&poffProgInfo->progSectionData[poffProgInfo->progSectionSize],
buffer, nbytes);
/* Set the new size of the string table */
poffProgInfo->progSectionSize += nbytes;
return eNOERROR;
}
/***********************************************************************/
void poffReplaceProgData(poffHandle_t handle, poffProgHandle_t progHandle)
{
poffInfo_t *poffInfo = (poffInfo_t*)handle;
poffProgInfo_t *poffProgInfo = (poffProgInfo_t*)progHandle;
/* Discard any existing program section data */
if (poffInfo->progSectionData)
{
free(poffInfo->progSectionData);
}
/* Replace the program section data with the tmp data */
poffInfo->progSectionData = poffProgInfo->progSectionData;
poffInfo->progSection.sh_size = poffProgInfo->progSectionSize;
poffInfo->progSectionAlloc = poffProgInfo->progSectionAlloc;
/* Reset the read index */
poffInfo->progSectionIndex = 0;
/* Then nullify the tmp data */
poffProgInfo->progSectionData = NULL;
poffProgInfo->progSectionSize = 0;
poffProgInfo->progSectionAlloc = 0;
}
/***********************************************************************/
