1 files changed, 47 insertions, 0 deletions
diff --git a/libdw/dwarf_getarange_addr.c b/libdw/dwarf_getarange_addr.c
new file mode 100644
index 00000000..2d0408e4
--- /dev/null
+++ b/libdw/dwarf_getarange_addr.c
@@ -0,0 +1,47 @@
+/* Get address range which includes given address.
+   Copyright (C) 2004, 2005 Red Hat, Inc.
+   Written by Ulrich Drepper <drepper@redhat.com>, 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 <libdwP.h>
+
+
+Dwarf_Arange *
+dwarf_getarange_addr (aranges, addr)
+     Dwarf_Aranges *aranges;
+     Dwarf_Addr addr;
+{
+  if (aranges == NULL)
+    return NULL;
+
+  /* The ranges are sorted by address, so we can use binary search.  */
+  size_t l = 0, u = aranges->naranges;
+  while (l < u)
+    {
+      size_t idx = (l + u) / 2;
+      if (addr < aranges->info[idx].addr)
+	u = idx;
+      else if (addr > aranges->info[idx].addr
+	       && addr - aranges->info[idx].addr >= aranges->info[idx].length)
+	l = idx + 1;
+      else
+	return &aranges->info[idx];
+    }
+
+  __libdw_seterrno (DWARF_E_NO_MATCH);
+  return NULL;
+}
+INTDEF(dwarf_getarange_addr)