Squashed 'third_party/elfutils/' content from commit 555e15e
Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/libdw/frame-cache.c b/libdw/frame-cache.c
new file mode 100644
index 0000000..5b6afb5
--- /dev/null
+++ b/libdw/frame-cache.c
@@ -0,0 +1,70 @@
+/* Frame cache handling.
+ Copyright (C) 2009, 2015 Red Hat, Inc.
+ This file is part of elfutils.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of either
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at
+ your option) any later version
+
+ or
+
+ * the GNU General Public License as published by the Free
+ Software Foundation; either version 2 of the License, or (at
+ your option) any later version
+
+ or both in parallel, as here.
+
+ elfutils is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received copies of the GNU General Public License and
+ the GNU Lesser General Public License along with this program. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "../libebl/libebl.h"
+#include "cfi.h"
+#include <search.h>
+#include <stdlib.h>
+
+
+static void
+free_cie (void *arg)
+{
+ struct dwarf_cie *cie = arg;
+
+ free ((Dwarf_Frame *) cie->initial_state);
+ free (cie);
+}
+
+#define free_fde free
+
+static void
+free_expr (void *arg)
+{
+ struct loc_s *loc = arg;
+
+ free (loc->loc);
+ free (loc);
+}
+
+void
+internal_function
+__libdw_destroy_frame_cache (Dwarf_CFI *cache)
+{
+ /* Most of the data is in our two search trees. */
+ tdestroy (cache->fde_tree, free_fde);
+ tdestroy (cache->cie_tree, free_cie);
+ tdestroy (cache->expr_tree, free_expr);
+
+ if (cache->ebl != NULL && cache->ebl != (void *) -1l)
+ ebl_closebackend (cache->ebl);
+}