diff --git a/lib/processor/CMakeLists.txt b/lib/processor/CMakeLists.txt
index 90200ff7..2db10638 100644
--- a/lib/processor/CMakeLists.txt
+++ b/lib/processor/CMakeLists.txt
@@ -5,10 +5,13 @@ else()
 	collect (PROJECT_LIB_HEADERS generic/cpu.h)
 endif()
 
+if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${PROJECT_PROCESSOR}/cpu.c")
+	collect (PROJECT_LIB_SOURCES ${PROJECT_PROCESSOR}/cpu.c)
+endif()
+
 if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${PROJECT_PROCESSOR}/atomic.h")
 	collect (PROJECT_LIB_HEADERS ${PROJECT_PROCESSOR}/atomic.h)
 	set(HAVE_PROCESSOR_ATOMIC_H 1 CACHE INTERNAL "Have include ${PROJECT_PROCESSOR}/atomic.h")
 else()
 	collect (PROJECT_LIB_HEADERS generic/atomic.h)
 endif()
-
diff --git a/lib/processor/hosted/cpu.c b/lib/processor/hosted/cpu.c
new file mode 100644
index 00000000..0f6b355c
--- /dev/null
+++ b/lib/processor/hosted/cpu.c
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2024, STMicroelectronics.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * @file	zephyr/cpu.c
+ * @brief	hosted libmetal cpu routines.
+ */
+
+#include <metal/sys.h>
+
+void metal_cpu_yield(void)
+{
+	metal_wait_usec(10);
+}
diff --git a/lib/processor/hosted/cpu.h b/lib/processor/hosted/cpu.h
index be8a1680..97114276 100644
--- a/lib/processor/hosted/cpu.h
+++ b/lib/processor/hosted/cpu.h
@@ -9,14 +9,9 @@
  * @brief	Hosted environment CPU specific primitives
  */
 
-#include <metal/sys.h>
-
 #ifndef __METAL_HOSTED_CPU__H__
 #define __METAL_HOSTED_CPU__H__
 
-static inline void metal_cpu_yield(void)
-{
-	metal_wait_usec(10);
-}
+void metal_cpu_yield(void);
 
 #endif /* __METAL_HOSTED_CPU__H__ */