2 files changed, 16 insertions, 0 deletions
diff --git a/os/rt/include/chthreads.h b/os/rt/include/chthreads.h
index 6da6b6518..1dcad9b48 100644
--- a/os/rt/include/chthreads.h
+++ b/os/rt/include/chthreads.h
@@ -148,6 +148,17 @@ typedef msg_t (*tfunc_t)(void *);
 /** @} */
 
 /**
+ * @name    Threads abstraction macros
+ */
+/**
+ * @brief   Thread declaration macro.
+ * @note    Thread declarations should be performed using this macro because
+ *          the port layer could define optimizations for thread functions.
+ */
+#define THD_FUNCTION(tname, arg) PORT_THD_FUNCTION(tname, arg)
+/** @} */
+
+/**
  * @name    Macro Functions
  * @{
  */
diff --git a/os/rt/ports/ARMCMx/compilers/GCC/chtypes.h b/os/rt/ports/ARMCMx/compilers/GCC/chtypes.h
index 1cf45c99b..61052a46d 100644
--- a/os/rt/ports/ARMCMx/compilers/GCC/chtypes.h
+++ b/os/rt/ports/ARMCMx/compilers/GCC/chtypes.h
@@ -79,6 +79,11 @@ typedef uint32_t        ucnt_t;         /**< Generic unsigned counter.      */
  */
 #define NOINLINE __attribute__((noinline))
 
+/**
+ * @brief   Optimized thread function declaration macro.
+ */
+#define PORT_THD_FUNCTION(tname, arg) msg_t tname(void *arg)
+
 #endif /* _CHTYPES_H_ */
 
 /** @} */