PR 2608 plus some refactoring in tapsets.cxx

New dwarf_wrappers.h, dwarf_wrappers.cxx for for idiomatic access to
libdwarf and refactoring somethings out of the giant classes in tapsets.cxx.

1 files changed, 40 insertions, 0 deletions

diff --git a/dwarf_wrappers.cxx b/dwarf_wrappers.cxx
new file mode 100644
index 00000000..ad690d78
--- /dev/null
+++ b/dwarf_wrappers.cxx
@@ -0,0 +1,40 @@
+// -*- C++ -*-
+// Copyright (C) 2008 Red Hat Inc.
+//
+// This file is part of systemtap, and is free software.  You can
+// redistribute it and/or modify it under the terms of the GNU General
+// Public License (GPL); either version 2, or (at your option) any
+// later version.
+
+#include "dwarf_wrappers.h"
+#include "staptree.h"
+
+#include <cstring>
+#include <string>
+#include <elfutils/libdwfl.h>
+
+using std::string;
+
+void dwfl_assert(const string& desc, int rc)
+{
+  if (rc == 0)
+    return;
+  string msg = "libdwfl failure (" + desc + "): ";
+  if (rc < 0)
+    msg += dwfl_errmsg (rc);
+  else
+    msg += std::strerror (rc);
+  throw semantic_error (msg);
+}
+
+void dwarf_assert(const string& desc, int rc)
+{
+  if (rc == 0)
+    return;
+  string msg = "libdw failure (" + desc + "): ";
+  if (rc < 0)
+    msg += dwarf_errmsg (rc);
+  else
+    msg += std::strerror (rc);
+  throw semantic_error (msg);
+}