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+//===------------------------ libunwind_ext.h -----------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//
+// Extensions to libunwind API.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __LIBUNWIND_EXT__
+#define __LIBUNWIND_EXT__
+
+#include "config.h"
+#include <libunwind.h>
+#include <unwind.h>
+
+#define UNW_STEP_SUCCESS 1
+#define UNW_STEP_END 0
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+// SPI
+extern void unw_iterate_dwarf_unwind_cache(void (*func)(unw_word_t ip_start,
+ unw_word_t ip_end,
+ unw_word_t fde,
+ unw_word_t mh));
+
+// IPI
+extern void _unw_add_dynamic_fde(unw_word_t fde);
+extern void _unw_remove_dynamic_fde(unw_word_t fde);
+
+#if _LIBUNWIND_ARM_EHABI
+extern const uint32_t* decode_eht_entry(const uint32_t*, size_t*, size_t*);
+extern _Unwind_Reason_Code _Unwind_VRS_Interpret(_Unwind_Context *context,
+ const uint32_t *data,
+ size_t offset, size_t len);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // __LIBUNWIND_EXT__