Resync new repository with old repo r5166

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
2026-10-22 11:03:33 +08:00 · 2012-09-17 18:18:44 +00:00
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+/**********************************************************************
+ * pfwstring.c
+ * Write string table data a POFF file
+ *
+ *   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
+ ***********************************************************************/
+
+/***********************************************************************/
+/* Search the string table for an occurrence of the indicates string.
+ * If found, return the offset in the string table to the string; if
+ * not found, return -1.
+ */
+
+int32_t poffFindString(poffHandle_t handle, const char *string)
+{
+  poffInfo_t *poffInfo = (poffInfo_t*)handle;
+  char       *sptr     = poffInfo->stringTable;
+  uint32_t    offset;
+
+  /* Has the string table been allocated yet? */
+
+  if (!poffInfo->stringTable) return -1;
+
+  /* Handle the NULL string case.  Offset zero is reserved for the NULL
+   * string and for the zero-size string.
+   */
+
+  if (!string) return 0;
+
+  /* Okay, we will have to search the table */
+
+  for (offset = 0;
+       offset < poffInfo->stringTableSection.sh_size;
+       offset += (strlen(sptr) + 1))
+    {
+      /* Get a pointer at this offset into the string table */
+
+      sptr = &poffInfo->stringTable[offset];
+
+      /* Check if the strings match.  If so, return the offset */
+
+      if (strcmp(sptr, string) == 0) return offset;
+    }
+
+  /* The string does not exist in the string table */
+
+  return -1;
+}
+
+/***********************************************************************/
+/***********************************************************************/
+/* Add a string to the string table and return the offset to the
+ * string storage location in the string table section data.
+ */
+
+uint32_t poffAddString(poffHandle_t handle, const char *string)
+{
+  poffInfo_t *poffInfo = (poffInfo_t*)handle;
+  int32_t index;
+  int len;
+
+  /* Check if we have allocated a string table buffer yet */
+
+  if (!poffInfo->stringTable)
+    {
+      /* No, allocate it now */
+
+      poffInfo->stringTable = (char*)malloc(INITIAL_STRING_TABLE_SIZE);
+      if (!poffInfo->stringTable)
+        {
+          fatal(eNOMEMORY);
+        }
+
+      /* Index 0 is reserved for the NULL string */
+
+      poffInfo->stringTable[0]             = '\0';
+      poffInfo->stringTableSection.sh_size = 1;
+      poffInfo->stringTableAlloc           = INITIAL_STRING_TABLE_SIZE;
+    }
+
+  /* Check if the string is already defined in the string table.
+   * This is very time consuming, but guaratees that we do not keep
+   * duplicate strings in the string table.
+   */
+
+  index = poffFindString(handle, string);
+  if (index < 0)
+    {
+      /* The string was not found in the string table.  Check for the
+       * NULL string.  In this case, return index == 0.  NOTE:  This
+       * check is pointless.  If this is any kind of NULL string, then
+       * poffFindString will have returned index == 0.
+       */
+
+      if ((string == NULL) || ((len = strlen(string)) <= 0))
+        {
+          index = 0;
+        }
+      else
+        {
+          /* Increment the length to include the null terminator */
+
+          len++;
+
+          /* Check if there is room for the new string */
+
+          if (poffInfo->stringTableSection.sh_size + len >
+              poffInfo->stringTableAlloc)
+            {
+              uint32_t newAlloc =
+                poffInfo->stringTableAlloc + STRING_TABLE_INCREMENT;
+              void *tmp;
+
+              /* Make sure that the new string will fit in the new allocation
+               * size (shouldn't happen)
+               */
+
+              while (poffInfo->stringTableSection.sh_size + len > newAlloc)
+                newAlloc += STRING_TABLE_INCREMENT;
+
+              /* Reallocate the string buffer */
+
+              tmp = realloc(poffInfo->stringTable, newAlloc);
+              if (!tmp)
+                {
+                  fatal(eNOMEMORY);
+                }
+
+              /* And set the new size */
+
+              poffInfo->stringTableAlloc = newAlloc;
+              poffInfo->stringTable      = (char*)tmp;
+            }
+
+          /* Copy the string into the string table */
+
+          index = poffInfo->stringTableSection.sh_size;
+          memcpy(&poffInfo->stringTable[index], string, len);
+
+          /* Set the new size of the string table */
+
+          poffInfo->stringTableSection.sh_size += len;
+        }
+    }
+  return index;
+}
+
+/***********************************************************************/