/**********************************************************************
* pftsymbol.c
* Write symbol information to a temporary container
*
* 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
***********************************************************************/
/***********************************************************************/
/* Add a symbol to the symbol table section data. Returns index value
* associated with the symbol entry in the symbol table section data.
*/
uint32_t poffAddTmpSymbol(poffHandle_t handle, poffSymHandle_t symHandle,
poffLibSymbol_t *symbol)
{
poffSymInfo_t *poffSymInfo = (poffSymInfo_t*)symHandle;
poffSymbol_t *psym;
uint32_t st_name;
uint32_t index;
/* Add the name to the string table. Note: We are probably re-writing
* the string table and so the string probably already exists in the
* string table. We are counting of the string table logic's abililty
* avoid duplicated strings to keep from adding trash to the string
* table.
*/
st_name = poffAddString(handle, symbol->name);
/* Check if we have allocated a symbol table buffer yet */
if (!poffSymInfo->symbolTable)
{
/* No, allocate it now */
poffSymInfo->symbolTable = (uint8_t*)malloc(INITIAL_SYMBOL_TABLE_SIZE);
if (!poffSymInfo->symbolTable)
{
fatal(eNOMEMORY);
}
poffSymInfo->symbolTableSize = 0;
poffSymInfo->symbolTableAlloc = INITIAL_SYMBOL_TABLE_SIZE;
}
/* Check if there is room for a new symbol */
if (poffSymInfo->symbolTableSize + sizeof(poffSymbol_t) >
poffSymInfo->symbolTableAlloc)
{
uint32_t newAlloc = poffSymInfo->symbolTableAlloc + SYMBOL_TABLE_INCREMENT;
uint8_t *tmp;
/* Reallocate the file name buffer */
tmp = (uint8_t*)realloc(poffSymInfo->symbolTable, newAlloc);
if (!tmp)
{
fatal(eNOMEMORY);
}
/* And set the new size */
poffSymInfo->symbolTableAlloc = newAlloc;
poffSymInfo->symbolTable = tmp;
}
/* Save the new symbol information in the symbol table data */
index = poffSymInfo->symbolTableSize;
psym = (poffSymbol_t*)&poffSymInfo->symbolTable[index];
psym->st_type = symbol->type;
psym->st_align = symbol->align;
psym->st_flags = symbol->flags;
psym->st_pad = 0;
psym->st_name = st_name;
psym->st_value = symbol->value;
psym->st_size = symbol->size;
/* Set the new size of the file name table */
poffSymInfo->symbolTableSize += sizeof(poffSymbol_t);
return index;
}
/***********************************************************************/
void poffReplaceSymbolTable(poffHandle_t handle, poffSymHandle_t symHandle)
{
poffInfo_t *poffInfo = (poffInfo_t*)handle;
poffSymInfo_t *poffSymInfo = (poffSymInfo_t*)symHandle;
/* Discard any existing symbol table */
if (poffInfo->symbolTable)
{
free(poffInfo->symbolTable);
}
/* Replace the symram section data with the tmp data */
poffInfo->symbolTable = poffSymInfo->symbolTable;
poffInfo->symbolTableSection.sh_size = poffSymInfo->symbolTableSize;
poffInfo->symbolTableSection.sh_entsize = sizeof(poffSymbol_t);
poffInfo->symbolTableAlloc = poffSymInfo->symbolTableAlloc;
/* Reset the read index */
poffInfo->symbolIndex = 0;
/* Then nullify the tmp data */
poffSymInfo->symbolTable = NULL;
poffSymInfo->symbolTableSize = 0;
poffSymInfo->symbolTableAlloc = 0;
}
/***********************************************************************/
