X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=tos%2Fchips%2Fatm128%2Fatm128hardware.h;h=3e4bb03094a572b87d0e10ab43b96156219635d4;hb=b03bc095f17288e2654d790ce8029c4b88d04beb;hp=cfc7eaf7f372ce17ef5c38c0dbaf1a5898878611;hpb=6a2a77e0090f9ce572faa4a0000eae09b1c1beef;p=tinyos-2.x.git

diff --git a/tos/chips/atm128/atm128hardware.h b/tos/chips/atm128/atm128hardware.h
index cfc7eaf7..3e4bb030 100644
--- a/tos/chips/atm128/atm128hardware.h
+++ b/tos/chips/atm128/atm128hardware.h
@@ -104,6 +104,7 @@ __nesc_atomic_start(void) @spontaneous()
 {
     __nesc_atomic_t result = SREG;
     __nesc_disable_interrupt();
+    asm volatile("" : : : "memory"); /* ensure atomic section effect visibility */
     return result;
 }
 
@@ -111,6 +112,7 @@ __nesc_atomic_start(void) @spontaneous()
 inline void 
 __nesc_atomic_end(__nesc_atomic_t original_SREG) @spontaneous()
 {
+  asm volatile("" : : : "memory"); /* ensure atomic section effect visibility */
   SREG = original_SREG;
 }
 #endif