1 files changed, 83 insertions, 0 deletions
diff --git a/cpukit/libdl/rtl-unwind-dw2.h b/cpukit/libdl/rtl-unwind-dw2.h
new file mode 100644
index 0000000000..55b97970c2
--- /dev/null
+++ b/cpukit/libdl/rtl-unwind-dw2.h
@@ -0,0 +1,83 @@
+/*
+ *  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 DWARF  Support.
+ */
+
+#if !defined (_RTEMS_RTL_UNWIND_DW2_H_)
+#define _RTEMS_RTL_UNWIND_DW2_H_
+
+#include "rtl-elf.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#if __SIZEOF_LONG__ >= __SIZEOF_POINTER__
+  typedef long rtems_rtl_elf_unwind_dw2_sleb128;
+  typedef unsigned long rtems_rtl_elf_unwind_dw2_uleb128;
+#elif __SIZEOF_LONG_LONG__ >= __SIZEOF_POINTER__
+  typedef long long rtems_rtl_elf_unwind_dw2_sleb128;
+  typedef unsigned long long rtems_rtl_elf_unwind_dw2_uleb128;
+#else
+  #error No DW2 type available.
+#endif
+
+/**
+ * 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_dw2_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_dw2_register (const 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_dw2_deregister (const rtems_rtl_obj_t* obj);
+
+/**
+ * Read signed and unsigned LEB128 values.
+ */
+const uint8_t* rtems_rtl_elf_unwind_dw2_read_uleb128 (const uint8_t*                    data,
+						      rtems_rtl_elf_unwind_dw2_uleb128* val);
+const uint8_t* rtems_rtl_elf_unwind_dw2_read_sleb128 (const uint8_t*                    data,
+						      rtems_rtl_elf_unwind_dw2_sleb128* val);
+
+bool rtems_rtl_elf_unwind_dw2_relocate (const Elf_Addr* where, Elf_Word value, Elf_Word mask);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif