Xtensa_ESP32: Add definition for portMEMORY_BARRIER (#395)

This fixes crash observed in Amazon FreeRTOS when optimisations are enabled
2021-09-17 02:46:22 +05:30 · 2021-09-17 02:46:22 +05:30 · 741185f1d0
commit 741185f1d0
parent 1b86b39940
1 changed files with 4 additions and 0 deletions
--- a/portable/ThirdParty/GCC/Xtensa_ESP32/include/portmacro.h
+++ b/portable/ThirdParty/GCC/Xtensa_ESP32/include/portmacro.h
@ -554,6 +554,10 @@
        #define configASSERT( x )    if( !( x ) ) { porttracePrint( -1 ); printf( "\nAssertion failed in %s:%d\n", __FILE__, __LINE__ ); exit( -1 ); }
    #endif

+/* Barriers */
+    #define portMEMORY_BARRIER()    __asm volatile ( "" ::: "memory" )
+
+
 #endif // __ASSEMBLER__

 /* *INDENT-OFF* */