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authorpatacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>2008-01-04 22:52:02 +0000
committerpatacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>2008-01-04 22:52:02 +0000
commiteca8fc5427fae36404c8f3772f8ed4f2f36100ea (patch)
tree15ba7e23c47bc4d4b4fdc59d730c3e0eb7b03fa6 /misc/pascal/libpoff/pftsymbol.c
parent2d2c6392898b29ae89d41a779ef712fb901900ac (diff)
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Pascal
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@485 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'misc/pascal/libpoff/pftsymbol.c')
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1 files changed, 188 insertions, 0 deletions
diff --git a/misc/pascal/libpoff/pftsymbol.c b/misc/pascal/libpoff/pftsymbol.c
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+/**********************************************************************
+ * pftsymbol.c
+ * Write symbol information to a temporary container
+ *
+ * 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 <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 */
+
+/**********************************************************************
+ * 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 poffAddTmpSymbol(poffHandle_t handle, poffSymHandle_t symHandle,
+ poffLibSymbol_t *symbol)
+{
+ poffSymInfo_t *poffSymInfo = (poffSymInfo_t*)symHandle;
+ poffSymbol_t *psym;
+ uint32 st_name;
+ uint32 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 = (ubyte*)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 newAlloc = poffSymInfo->symbolTableAlloc + SYMBOL_TABLE_INCREMENT;
+ ubyte *tmp;
+
+ /* Reallocate the file name buffer */
+
+ tmp = (ubyte*)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;
+}
+
+/***********************************************************************/