[mc] OOify mc_find_frame_base()

[simgrid.git] / src / mc / Frame.cpp

diff --git a/src/mc/Frame.cpp b/src/mc/Frame.cpp
new file mode 100644 (file)
index 0000000..448cfa1
--- /dev/null
+++ b/src/mc/Frame.cpp
@@ -0,0 +1,33 @@
+/* Copyright (c) 2007-2015. The SimGrid Team.
+ * All rights reserved.                                                     */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include <mc/Frame.hpp>
+
+namespace simgrid {
+namespace mc {
+
+void* Frame::frame_base(unw_cursor_t& unw_cursor) const
+{
+  simgrid::dwarf::Location location = simgrid::dwarf::resolve(
+                             frame_base_location, object_info,
+                             &unw_cursor, NULL, NULL, -1);
+  if (location.in_memory())
+    return location.address();
+  else if (location.in_register()) {
+    // This is a special case.
+    // The register if not the location of the frame base
+    // (a frame base cannot be located in a register)
+    // Instead, DWARF defines this to mean that the register
+    // contains the address of the frame base.
+    unw_word_t word;
+    unw_get_reg(&unw_cursor, location.register_id(), &word);
+    return (void*) word;
+  }
+  else xbt_die("Unexpected location type");
+}
+
+}
+}
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