diff -r 58237fa09b63 -r 01ac7b1701eb hotspot/src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp
--- a/hotspot/src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp	Tue Oct 05 08:57:20 2010 -0700
+++ b/hotspot/src/cpu/sparc/vm/c1_LIRAssembler_sparc.cpp	Tue Oct 05 11:16:12 2010 -0700
@@ -420,7 +420,8 @@
   }
 
   if (compilation()->env()->dtrace_method_probes()) {
-    jobject2reg(method()->constant_encoding(), O0);
+    __ mov(G2_thread, O0);
+    jobject2reg(method()->constant_encoding(), O1);
     __ call(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), relocInfo::runtime_call_type);
     __ delayed()->nop();
   }