diff options
Diffstat (limited to 'misc/pascal/libpoff/pftprog.c')
| -rw-r--r-- | misc/pascal/libpoff/pftprog.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/misc/pascal/libpoff/pftprog.c b/misc/pascal/libpoff/pftprog.c new file mode 100644 index 000000000..875e99b38 --- /dev/null +++ b/misc/pascal/libpoff/pftprog.c @@ -0,0 +1,224 @@ +/**********************************************************************
+ * 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;
+}
+
+/***********************************************************************/
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