From 5820972727c5e70d016cbee70667d9ccb7132f61 Mon Sep 17 00:00:00 2001
From: zhuyanlin <zhuyanlin1@xiaomi.com>
Date: Mon, 9 Aug 2021 20:48:23 +0800
Subject: [PATCH] arch:xtensa: add arch stdarg.h include file for xtensa

Add arch/include/stdarg.h for xtensa.

Change-Id: Ia914ca0f4c95e86b130983ce690479a994a08b56
---
 arch/Kconfig                 |  1 +
 arch/xtensa/include/stdarg.h | 45 ++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 arch/xtensa/include/stdarg.h

diff --git a/arch/Kconfig b/arch/Kconfig
index 75c7dd3542..cba3ce3e1c 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -102,6 +102,7 @@ config ARCH_XTENSA
 	select ARCH_HAVE_STACKCHECK
 	select ARCH_HAVE_CUSTOMOPT
 	select ARCH_HAVE_TESTSET
+	select ARCH_HAVE_STDARG_H
 	---help---
 		Cadence® Tensilica® Xtensa® actictures.
 
diff --git a/arch/xtensa/include/stdarg.h b/arch/xtensa/include/stdarg.h
new file mode 100644
index 0000000000..dcfcb4abc4
--- /dev/null
+++ b/arch/xtensa/include/stdarg.h
@@ -0,0 +1,45 @@
+/****************************************************************************
+ * arch/xtensa/include/stdarg.h
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_XTENSA_INCLUDE_STDARG_H
+#define __ARCH_XTENSA_INCLUDE_STDARG_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* This should work with any modern gcc (newer than 3.4 or so) */
+
+#define va_start(v,l)   __builtin_va_start(v,l)
+#define va_end(v)       __builtin_va_end(v)
+#define va_arg(v,l)     __builtin_va_arg(v,l)
+#define va_copy(d,s)    __builtin_va_copy(d,s)
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+typedef __builtin_va_list va_list;
+
+#endif /* __ARCH_XTENSA_INCLUDE_STDARG_H */