diff --git a/libcpu/arm/cortex-m23/cpuport.c b/libcpu/arm/cortex-m23/cpuport.c
index 20c611a6f0..c5525d2a88 100644
--- a/libcpu/arm/cortex-m23/cpuport.c
+++ b/libcpu/arm/cortex-m23/cpuport.c
@@ -14,34 +14,7 @@
 
 #include <rtthread.h>
 
-struct exception_stack_frame
-{
-    rt_uint32_t r0;
-    rt_uint32_t r1;
-    rt_uint32_t r2;
-    rt_uint32_t r3;
-    rt_uint32_t r12;
-    rt_uint32_t lr;
-    rt_uint32_t pc;
-    rt_uint32_t psr;
-};
-
-struct stack_frame
-{
-    /* r4 ~ r7 low register */
-    rt_uint32_t r4;
-    rt_uint32_t r5;
-    rt_uint32_t r6;
-    rt_uint32_t r7;
-
-    /* r8 ~ r11 high register */
-    rt_uint32_t r8;
-    rt_uint32_t r9;
-    rt_uint32_t r10;
-    rt_uint32_t r11;
-
-    struct exception_stack_frame exception_stack_frame;
-};
+#include "cpuport.h"
 
 /* flag in interrupt handling */
 rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread;
diff --git a/libcpu/arm/cortex-m23/cpuport.h b/libcpu/arm/cortex-m23/cpuport.h
new file mode 100644
index 0000000000..d5bd7645a4
--- /dev/null
+++ b/libcpu/arm/cortex-m23/cpuport.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2006-2024, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2024-11-17     RT-Thread    first version
+ */
+
+#ifndef __CPUPORT_H__
+#define __CPUPORT_H__
+
+#include <rtdef.h>
+
+struct exception_stack_frame
+{
+    rt_uint32_t r0;
+    rt_uint32_t r1;
+    rt_uint32_t r2;
+    rt_uint32_t r3;
+    rt_uint32_t r12;
+    rt_uint32_t lr;
+    rt_uint32_t pc;
+    rt_uint32_t psr;
+};
+
+struct stack_frame
+{
+    /* r4 ~ r7 low register */
+    rt_uint32_t r4;
+    rt_uint32_t r5;
+    rt_uint32_t r6;
+    rt_uint32_t r7;
+
+    /* r8 ~ r11 high register */
+    rt_uint32_t r8;
+    rt_uint32_t r9;
+    rt_uint32_t r10;
+    rt_uint32_t r11;
+
+    struct exception_stack_frame exception_stack_frame;
+};
+
+#endif /* __CPUPORT_H__ */