新增4轮4转-补丁代码

e3_176_ref-补丁/arch/include/armv7-r/fpu.h

@@ -0,0 +1,44 @@
+/*
+ * fpu.h
+ *
+ * Copyright (c) 2020 Semidrive Semiconductor.
+ * All rights reserved.
+ *
+ * Description: ARM fpu interface.
+ *
+ * Revision History:
+ * -----------------
+ */
+
+#ifndef INCLUDE_ARCH_FPU_H
+#define INCLUDE_ARCH_FPU_H
+
+#ifndef ASSEMBLY
+
+#include <compiler.h>
+
+__BEGIN_CDECLS
+
+/*
+ * fpu enable.
+ */
+#if CONFIG_ARCH_WITH_FPU
+void arm_fpu_enable(void);
+#else
+#define arm_fpu_enable()
+#endif
+
+/*
+ * fpu disable.
+ */
+#if CONFIG_ARCH_WITH_FPU
+void arm_fpu_disable(void);
+#else
+#define arm_fpu_disable()
+#endif
+
+__END_CDECLS
+
+#endif
+
+#endif