libdl: Back port C++ exception throw and catch from 4.12.

Closes #2956.

1 files changed, 63 insertions, 0 deletions

diff --git a/cpukit/libdl/rtl-unwind.h b/cpukit/libdl/rtl-unwind.h
new file mode 100644
index 0000000000..f88787e1ba
--- /dev/null
+++ b/cpukit/libdl/rtl-unwind.h
@@ -0,0 +1,63 @@
+/*
+ *  COPYRIGHT (c) 2016 Chris Johns <chrisj@rtems.org>
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ */
+/**
+ * @file
+ *
+ * @ingroup rtems_rtl
+ *
+ * @brief RTEMS Run-Time Linker Unwind Support.
+ */
+
+#if !defined (_RTEMS_RTL_UNWIND_H_)
+#define _RTEMS_RTL_UNWIND_H_
+
+#include "rtl-elf.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * Architecture specific handler to check if a section contains exception
+ * handler data..
+ *
+ * @param obj The object file.
+ * @param name The section's name.
+ * @param uint32 flags The object file's flags.
+ * @retval true The section contains unwind information.
+ * @retval false The section does not contain unwind information.
+ */
+bool rtems_rtl_elf_unwind_parse (const rtems_rtl_obj_t* obj,
+                                 const char*            name,
+                                 uint32_t               flags);
+
+/**
+ * Architecture specific handler to add an object file's unwind information to
+ * the base image.
+ *
+ * @param obj The object file.
+ * @retval true The unwind information has been registered.
+ * @retval false The unwind information could not be registered.
+ */
+bool rtems_rtl_elf_unwind_register (rtems_rtl_obj_t* obj);
+
+/**
+ * Architecture specific handler to remove an object file's unwind information
+ * from the base image.
+ *
+ * @param obj The object file.
+ * @retval true The unwind information has been deregistered.
+ * @retval false The unwind information could not be deregistered.
+ */
+bool rtems_rtl_elf_unwind_deregister (rtems_rtl_obj_t* obj);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif