Adjust for monotone.

1 files changed, 72 insertions, 0 deletions

diff --git a/libdw/dwarf_formblock.c b/libdw/dwarf_formblock.c
new file mode 100644
index 00000000..30c2ac93
--- /dev/null
+++ b/libdw/dwarf_formblock.c
@@ -0,0 +1,72 @@
+/* Return block represented by attribute.
+   Copyright (C) 2004, 2005 Red Hat, Inc.
+   Written by Ulrich Drepper <[email protected]>, 2004.
+
+   This program is Open Source software; you can redistribute it and/or
+   modify it under the terms of the Open Software License version 1.0 as
+   published by the Open Source Initiative.
+
+   You should have received a copy of the Open Software License along
+   with this program; if not, you may obtain a copy of the Open Software
+   License version 1.0 from http://www.opensource.org/licenses/osl.php or
+   by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
+   3001 King Ranch Road, Ukiah, CA 95482.   */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <dwarf.h>
+#include "libdwP.h"
+
+
+int
+dwarf_formblock (attr, return_block)
+     Dwarf_Attribute *attr;
+     Dwarf_Block *return_block;
+{
+  if (attr == NULL)
+    return -1;
+
+  const unsigned char *datap;
+
+  switch (attr->form)
+    {
+    case DW_FORM_block1:
+      return_block->length = *(uint8_t *) attr->valp;
+      return_block->data = attr->valp + 1;
+      break;
+
+    case DW_FORM_block2:
+      return_block->length = read_2ubyte_unaligned (attr->cu->dbg, attr->valp);
+      return_block->data = attr->valp + 2;
+      break;
+
+    case DW_FORM_block4:
+      return_block->length = read_4ubyte_unaligned (attr->cu->dbg, attr->valp);
+      return_block->data = attr->valp + 4;
+      break;
+
+    case DW_FORM_block:
+      datap = attr->valp;
+      get_uleb128 (return_block->length, datap);
+      return_block->data = (unsigned char *) datap;
+      break;
+
+    default:
+      __libdw_seterrno (DWARF_E_NO_BLOCK);
+      return -1;
+    }
+
+  if (return_block->data + return_block->length
+      > ((unsigned char *) attr->cu->dbg->sectiondata[IDX_debug_info]->d_buf
+	 + attr->cu->dbg->sectiondata[IDX_debug_info]->d_size))
+    {
+      /* Block does not fit.  */
+      __libdw_seterrno (DWARF_E_INVALID_DWARF);
+      return -1;
+    }
+
+  return 0;
+}
+INTDEF(dwarf_formblock)