1 files changed, 28 insertions, 32 deletions
diff --git a/lib/builtins/unwind-ehabi-helpers.h b/lib/builtins/unwind-ehabi-helpers.h
index ccb0765975a9a..1b48cdb75e1b8 100644
--- a/lib/builtins/unwind-ehabi-helpers.h
+++ b/lib/builtins/unwind-ehabi-helpers.h
@@ -1,43 +1,40 @@
-/* ===-- arm-ehabi-helpers.h - Supplementary ARM EHABI declarations --------===
- *
- *                     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.
- *
- * ===--------------------------------------------------------------------=== */
+//===-- arm-ehabi-helpers.h - Supplementary ARM EHABI declarations --------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===--------------------------------------------------------------------===//
 
 #ifndef UNWIND_EHABI_HELPERS_H
 #define UNWIND_EHABI_HELPERS_H
 
 #include <stdint.h>
-/* NOTE: see reasoning for this inclusion below */
+// NOTE: see reasoning for this inclusion below
 #include <unwind.h>
 
 #if !defined(__ARM_EABI_UNWINDER__)
 
-/*
- * NOTE: _URC_OK, _URC_FAILURE must be present as preprocessor tokens.  This
- * allows for a substitution of a constant which can be cast into the
- * appropriate enumerated type.  This header is expected to always be included
- * AFTER unwind.h (which is why it is forcefully included above).  This ensures
- * that we do not overwrite the token for the enumeration.  Subsequent uses of
- * the token would be clean to rewrite with constant values.
- *
- * The typedef redeclaration should be safe.  Due to the protection granted to
- * us by the `__ARM_EABI_UNWINDER__` above, we are guaranteed that we are in a
- * header not vended by gcc.  The HP unwinder (being an itanium unwinder) does
- * not support EHABI, and the GNU unwinder, derived from the HP unwinder, also
- * does not support EHABI as of the introduction of this header.  As such, we
- * are fairly certain that we are in the LLVM case.  Here, _Unwind_State is a
- * typedef, and so we can get away with a redeclaration.
- *
- * Guarded redefinitions of the needed unwind state prevent the redefinition of
- * those states.
- */
-
-#define _URC_OK       0
-#define _URC_FAILURE  9
+// NOTE: _URC_OK, _URC_FAILURE must be present as preprocessor tokens.  This
+// allows for a substitution of a constant which can be cast into the
+// appropriate enumerated type.  This header is expected to always be included
+// AFTER unwind.h (which is why it is forcefully included above).  This ensures
+// that we do not overwrite the token for the enumeration.  Subsequent uses of
+// the token would be clean to rewrite with constant values.
+//
+// The typedef redeclaration should be safe.  Due to the protection granted to
+// us by the `__ARM_EABI_UNWINDER__` above, we are guaranteed that we are in a
+// header not vended by gcc.  The HP unwinder (being an itanium unwinder) does
+// not support EHABI, and the GNU unwinder, derived from the HP unwinder, also
+// does not support EHABI as of the introduction of this header.  As such, we
+// are fairly certain that we are in the LLVM case.  Here, _Unwind_State is a
+// typedef, and so we can get away with a redeclaration.
+//
+// Guarded redefinitions of the needed unwind state prevent the redefinition of
+// those states.
+
+#define _URC_OK 0
+#define _URC_FAILURE 9
 
 typedef uint32_t _Unwind_State;
 
@@ -52,4 +49,3 @@ typedef uint32_t _Unwind_State;
 #endif
 
 #endif
-