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patacongo
57623d42eb
git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
153 lines
5.4 KiB
C
153 lines
5.4 KiB
C
/**********************************************************************
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* pfwsymbol.c
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* Write symbol information to 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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/* Add a symbol to the symbol table section data. Returns index value
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* associated with the symbol entry in the symbol table section data.
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*/
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uint32_t poffAddSymbol(poffHandle_t handle, poffLibSymbol_t *symbol)
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{
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poffInfo_t *poffInfo = (poffInfo_t*)handle;
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poffSymbol_t *psym;
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uint32_t st_name;
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uint32_t index;
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/* Add the name to the string table */
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st_name = poffAddString(poffInfo, symbol->name);
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/* Check if we have allocated a symbol table buffer yet */
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if (!poffInfo->symbolTable)
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{
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/* No, allocate it now */
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poffInfo->symbolTable = (uint8_t*)malloc(INITIAL_SYMBOL_TABLE_SIZE);
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if (!poffInfo->symbolTable)
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{
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fatal(eNOMEMORY);
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}
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poffInfo->symbolTableSection.sh_size = 0;
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poffInfo->symbolTableAlloc = INITIAL_SYMBOL_TABLE_SIZE;
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}
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/* Check if there is room for a new symbol */
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if (poffInfo->symbolTableSection.sh_size +
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poffInfo->symbolTableSection.sh_entsize >
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poffInfo->symbolTableAlloc)
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{
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uint32_t newAlloc = poffInfo->symbolTableAlloc + SYMBOL_TABLE_INCREMENT;
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uint8_t *tmp;
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/* Reallocate the file name buffer */
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tmp = (uint8_t*)realloc(poffInfo->symbolTable, newAlloc);
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if (!tmp)
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{
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fatal(eNOMEMORY);
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}
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/* And set the new size */
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poffInfo->symbolTableAlloc = newAlloc;
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poffInfo->symbolTable = tmp;
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}
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/* Save the new symbol information in the symbol table data */
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index = poffInfo->symbolTableSection.sh_size;
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psym = (poffSymbol_t*)&poffInfo->symbolTable[index];
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psym->st_type = symbol->type;
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psym->st_align = symbol->align;
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psym->st_flags = symbol->flags;
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psym->st_pad = 0;
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psym->st_name = st_name;
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psym->st_value = symbol->value;
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psym->st_size = symbol->size;
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/* Set the new size of the file name table */
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poffInfo->symbolTableSection.sh_size += poffInfo->symbolTableSection.sh_entsize;
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return index / poffInfo->symbolTableSection.sh_entsize;
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}
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/***********************************************************************/
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