Add portMEMORY_BARRIER() to RX MCU ports (#864)

* Add portMEMORY_BARRIER() to RX MCU ports

* Remove the memory barrier from the SH2A_FPU portable directory

---------

Co-authored-by: Rahul Kar <118818625+kar-rahul-aws@users.noreply.github.com>

portable/GCC/RX100/portmacro.h

@@ -147,6 +147,8 @@ void vPortSetIPL( uint32_t ulNewIPL ) __attribute__( ( naked ) );
 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters )    void vFunction( void * pvParameters )
 #define portTASK_FUNCTION( vFunction, pvParameters )          void vFunction( void * pvParameters )
 
+#define portMEMORY_BARRIER()                                  __asm volatile ( "" ::: "memory" )
+
 /* *INDENT-OFF* */
 #ifdef __cplusplus
     }

portable/GCC/RX200/portmacro.h

@@ -141,6 +141,8 @@ void vPortSetIPL( uint32_t ulNewIPL ) __attribute__( ( naked ) );
 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters )    void vFunction( void * pvParameters )
 #define portTASK_FUNCTION( vFunction, pvParameters )          void vFunction( void * pvParameters )
 
+#define portMEMORY_BARRIER()                                  __asm volatile ( "" ::: "memory" )
+
 /* *INDENT-OFF* */
 #ifdef __cplusplus
     }

portable/GCC/RX600/portmacro.h

@@ -141,6 +141,8 @@ void vPortSetIPL( uint32_t ulNewIPL ) __attribute__( ( naked ) );
 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters )    void vFunction( void * pvParameters )
 #define portTASK_FUNCTION( vFunction, pvParameters )          void vFunction( void * pvParameters )
 
+#define portMEMORY_BARRIER()                                  __asm volatile ( "" ::: "memory" )
+
 /* *INDENT-OFF* */
 #ifdef __cplusplus
     }

portable/GCC/RX600v2/portmacro.h

@@ -141,6 +141,8 @@ void vPortSetIPL( uint32_t ulNewIPL ) __attribute__( ( naked ) );
 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters )    void vFunction( void * pvParameters )
 #define portTASK_FUNCTION( vFunction, pvParameters )          void vFunction( void * pvParameters )
 
+#define portMEMORY_BARRIER()                                  __asm volatile ( "" ::: "memory" )
+
 /* *INDENT-OFF* */
 #ifdef __cplusplus
     }

portable/GCC/RX700v3_DPFPU/portmacro.h

@@ -185,6 +185,8 @@ void vPortSetIPL( uint32_t ulNewIPL ) __attribute__( ( naked ) );
 /* Definition to allow compatibility with existing FreeRTOS Demo using flop.c. */
 #define portTASK_USES_FLOATING_POINT()    vPortTaskUsesDPFPU()
 
+#define portMEMORY_BARRIER()              __asm volatile ( "" ::: "memory" )
+
 /* *INDENT-OFF* */
 #ifdef __cplusplus
     }

portable/Renesas/RX100/portmacro.h

@@ -148,6 +148,13 @@ extern void vTaskExitCritical( void );
 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
 
+#pragma inline_asm vPortMemoryBarrier
+static void vPortMemoryBarrier( void )
+{
+}
+
+#define portMEMORY_BARRIER()    vPortMemoryBarrier()
+
 /* *INDENT-OFF* */
 #ifdef __cplusplus
     }

portable/Renesas/RX200/portmacro.h

@@ -138,6 +138,12 @@ extern void vTaskExitCritical( void );
 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
 
+#pragma inline_asm vPortMemoryBarrier
+static void vPortMemoryBarrier( void )
+{
+}
+
+#define portMEMORY_BARRIER()    vPortMemoryBarrier()
 /* *INDENT-OFF* */
 #ifdef __cplusplus
     }

portable/Renesas/RX600/portmacro.h

@@ -139,6 +139,13 @@ extern void vTaskExitCritical( void );
 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
 
+#pragma inline_asm vPortMemoryBarrier
+static void vPortMemoryBarrier( void )
+{
+}
+
+#define portMEMORY_BARRIER()    vPortMemoryBarrier()
+
 /* *INDENT-OFF* */
 #ifdef __cplusplus
     }

portable/Renesas/RX600v2/portmacro.h

@@ -139,6 +139,13 @@ extern void vTaskExitCritical( void );
 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
 
+#pragma inline_asm vPortMemoryBarrier
+static void vPortMemoryBarrier( void )
+{
+}
+
+#define portMEMORY_BARRIER()    vPortMemoryBarrier()
+
 /* *INDENT-OFF* */
 #ifdef __cplusplus
     }

portable/Renesas/RX700v3_DPFPU/portmacro.h

@@ -183,6 +183,13 @@
 /* Definition to allow compatibility with existing FreeRTOS Demo using flop.c. */
     #define portTASK_USES_FLOATING_POINT() vPortTaskUsesDPFPU()
 
+#pragma inline_asm vPortMemoryBarrier
+static void vPortMemoryBarrier( void )
+{
+}
+
+#define portMEMORY_BARRIER()    vPortMemoryBarrier()
+
 /* *INDENT-OFF* */
 #ifdef __cplusplus
     }