diff options
Diffstat (limited to 'misc/pascal/libpoff/pfwreloc.c')
| -rw-r--r-- | misc/pascal/libpoff/pfwreloc.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/misc/pascal/libpoff/pfwreloc.c b/misc/pascal/libpoff/pfwreloc.c new file mode 100644 index 000000000..1b347ab37 --- /dev/null +++ b/misc/pascal/libpoff/pfwreloc.c @@ -0,0 +1,161 @@ +/**********************************************************************
+ * pfwreloc.c
+ * Write relocation data to a POFF file
+ *
+ * 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
+ ***********************************************************************/
+
+static void poffCheckRelocationAllocation(poffInfo_t *poffInfo)
+{
+ /* Check if we have allocated a line number buffer yet */
+
+ if (!poffInfo->relocTable)
+ {
+ /* No, allocate it now */
+
+ poffInfo->relocTable = (ubyte*)malloc(INITIAL_RELOC_TABLE_SIZE);
+ if (!poffInfo->relocTable)
+ {
+ fatal(eNOMEMORY);
+ }
+
+ poffInfo->relocSection.sh_size = 0;
+ poffInfo->relocAlloc = INITIAL_RELOC_TABLE_SIZE;
+ }
+}
+
+/***********************************************************************/
+
+static void poffCheckRelocationReallocation(poffInfo_t *poffInfo)
+{
+ if (poffInfo->relocSection.sh_size + sizeof(poffRelocation_t) >
+ poffInfo->relocAlloc)
+ {
+ uint32 newAlloc =
+ poffInfo->relocAlloc +
+ RELOC_TABLE_INCREMENT;
+
+ void *tmp;
+
+ /* Reallocate the line number buffer */
+
+ tmp = realloc(poffInfo->relocTable, newAlloc);
+ if (!tmp)
+ {
+ fatal(eNOMEMORY);
+ }
+
+ /* And set the new size */
+
+ poffInfo->relocAlloc = newAlloc;
+ poffInfo->relocTable = (ubyte*)tmp;
+ }
+}
+
+/***********************************************************************
+ * Public Functions
+ ***********************************************************************/
+
+/***********************************************************************/
+/* Add a relocation to the relocation table. Returns index value
+ * associated with the relocation entry in the relocation table.
+ */
+
+uint32 poffAddRelocation(poffHandle_t handle,
+ ubyte relocType, uint32 symIndex,
+ uint32 sectionDataOffset)
+{
+ poffInfo_t *poffInfo = (poffInfo_t*)handle;
+ poffRelocation_t *prl;
+ uint32 index;
+
+ /* Verify that the relocation table has been allocated */
+
+ poffCheckRelocationAllocation(poffInfo);
+
+ /* Verify that the relocation table is large enough to hold
+ * information about another relocation.
+ */
+
+ poffCheckRelocationReallocation(poffInfo);
+
+ /* Save the relocation information in the relocation table */
+
+ index = poffInfo->relocSection.sh_size;
+ prl = (poffRelocation_t*)&poffInfo->relocTable[index];
+
+ prl->rl_info = RLI_MAKE(symIndex, relocType);
+ prl->rl_offset = sectionDataOffset;
+
+ /* Set the new size of the line number table */
+
+ poffInfo->relocSection.sh_size += sizeof(poffRelocation_t);
+ return index;
+}
+
+/***********************************************************************/
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