[Tinyos-2-commits] CVS: tinyos-2.x/tos/chips/msp430 msp430hardware.h, 1.3, 1.4

[David Gay]

Update of /cvsroot/tinyos/tinyos-2.x/tos/chips/msp430
In directory sc8-pr-cvs10.sourceforge.net:/tmp/cvs-serv13279/msp430

Modified Files:
	msp430hardware.h 
Log Message:
ensure visibility of atomic statement effects


Index: msp430hardware.h
===================================================================
RCS file: /cvsroot/tinyos/tinyos-2.x/tos/chips/msp430/msp430hardware.h,v
retrieving revision 1.3
retrieving revision 1.4
diff -C2 -d -r1.3 -r1.4
*** msp430hardware.h	12 Dec 2006 18:23:06 -0000	1.3
--- msp430hardware.h	23 May 2007 22:49:31 -0000	1.4
***************
*** 212,215 ****
--- 212,216 ----
    __nesc_atomic_t result = ((READ_SR & SR_GIE) != 0);
    __nesc_disable_interrupt();
+   asm volatile("" : : : "memory"); /* ensure atomic section effect visibility */
    return result;
  }
***************
*** 217,220 ****
--- 218,222 ----
  void __nesc_atomic_end(__nesc_atomic_t reenable_interrupts) @spontaneous()
  {
+   asm volatile("" : : : "memory"); /* ensure atomic section effect visibility */
    if( reenable_interrupts )
      __nesc_enable_interrupt();