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--- mozilla/js/src/jslock.cpp.orig 2010-01-23 20:35:45.000000000 +0100
+++ mozilla/js/src/jslock.cpp 2010-01-23 20:37:35.000000000 +0100
@@ -160,8 +160,13 @@
unsigned int res;
__asm__ __volatile__ (
- "stbar\n"
- "cas [%1],%2,%3\n"
+ "membar #StoreLoad | #LoadLoad\n"
+# if defined (__sparc64__)
+ "casx [%1],%2,%3\n"
+# else
+ "cas [%1],%2,%3\n" /* 32-bit version */
+# endif
+ "membar #StoreLoad | #LoadLoad\n"
"cmp %2,%3\n"
"be,a 1f\n"
"mov 1,%0\n"
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