arch/arm: Add the macro definitions for CFI instructions for ghs

arch/arm/src/armv7-m/arm_exception.S

@@ -46,6 +46,7 @@
 
 #include "chip.h"
 #include "exc_return.h"
+#include "ghs_compat.S"
 
 /****************************************************************************
  * Pre-processor Definitions

arch/arm/src/armv7-m/ghs_compat.S

@@ -0,0 +1,48 @@
+/****************************************************************************
+ * arch/arm/src/armv7-m/ghs_compat.S
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifdef __ghs__
+    .macro  .cfi_sections section
+    .endm
+
+    .macro  .cfi_startproc
+    .endm
+
+    .macro  .cfi_def_cfa val1 val2
+    .endm
+
+    .macro  .cfi_def_cfa_offset val
+    .endm
+
+    .macro  .cfi_offset val1 val2
+    .endm
+
+    .macro  .cfi_restore val
+    .endm
+
+    .macro  .cfi_restore_state
+    .endm
+
+    .macro  .cfi_endproc
+    .endm
+
+    .macro  .cfi_remember_state
+    .endm
+#endif