1 files changed, 69 insertions, 0 deletions
diff --git a/libdw/dwarf_getscopes_die.c b/libdw/dwarf_getscopes_die.c
new file mode 100644
index 00000000..bdcee354
--- /dev/null
+++ b/libdw/dwarf_getscopes_die.c
@@ -0,0 +1,69 @@
+/* Return scope DIEs containing given DIE.
+   Copyright (C) 2005 Red Hat, Inc.
+
+   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 "libdwP.h"
+#include <assert.h>
+#include <stdlib.h>
+
+static int
+scope_visitor (unsigned int depth, struct Dwarf_Die_Chain *die, void *arg)
+{
+  if (die->die.addr != *(void **) arg)
+    return 0;
+
+  Dwarf_Die *scopes = malloc (depth * sizeof scopes[0]);
+  if (scopes == NULL)
+    {
+      __libdw_seterrno (DWARF_E_NOMEM);
+      return -1;
+    }
+
+  unsigned int i = 0;
+  do
+    {
+      scopes[i++] = die->die;
+      die = die->parent;
+    }
+  while (die != NULL);
+  assert (i == depth);
+
+  *(void **) arg = scopes;
+  return depth;
+}
+
+int
+dwarf_getscopes_die (Dwarf_Die *die, Dwarf_Die **scopes)
+{
+  if (die == NULL)
+    return -1;
+
+  struct Dwarf_Die_Chain cu =
+    {
+      .parent = NULL,
+      .die =
+      {
+	.cu = die->cu,
+	.addr = ((char *) die->cu->dbg->sectiondata[IDX_debug_info]->d_buf
+		 + die->cu->start + 3 * die->cu->offset_size - 4 + 3),
+      }
+    };
+
+  void *info = die->addr;
+  int result = __libdw_visit_scopes (1, &cu, &scope_visitor, NULL, &info);
+  if (result > 0)
+    *scopes = info;
+  return result;
+}