--- a/src/cpu/x86/vm/assembler_x86.cpp	Thu Oct 04 19:52:09 2012 -0400
+++ b/src/cpu/x86/vm/assembler_x86.cpp	Thu Oct 04 20:09:46 2012 -0400
@@ -1170,26 +1170,11 @@
 // and stores reg into adr if so; otherwise, the value at adr is loaded into rax,.
 // The ZF is set if the compared values were equal, and cleared otherwise.
 void Assembler::cmpxchgl(Register reg, Address adr) { // cmpxchg
-  if (Atomics & 2) {
-     // caveat: no instructionmark, so this isn't relocatable.
-     // Emit a synthetic, non-atomic, CAS equivalent.
-     // Beware.  The synthetic form sets all ICCs, not just ZF.
-     // cmpxchg r,[m] is equivalent to rax, = CAS (m, rax, r)
-     cmpl(rax, adr);
-     movl(rax, adr);
-     if (reg != rax) {
-        Label L ;
-        jcc(Assembler::notEqual, L);
-        movl(adr, reg);
-        bind(L);
-     }
-  } else {
-     InstructionMark im(this);
-     prefix(adr, reg);
-     emit_byte(0x0F);
-     emit_byte(0xB1);
-     emit_operand(reg, adr);
-  }
+  InstructionMark im(this);
+  prefix(adr, reg);
+  emit_byte(0x0F);
+  emit_byte(0xB1);
+  emit_operand(reg, adr);
 }
 
 void Assembler::comisd(XMMRegister dst, Address src) {
@@ -1513,12 +1498,7 @@
 }
 
 void Assembler::lock() {
-  if (Atomics & 1) {
-     // Emit either nothing, a NOP, or a NOP: prefix
-     emit_byte(0x90) ;
-  } else {
-     emit_byte(0xF0);
-  }
+  emit_byte(0xF0);
 }
 
 void Assembler::lzcntl(Register dst, Register src) {

--- a/src/os/windows/vm/jvm_windows.h	Thu Oct 04 19:52:09 2012 -0400
+++ b/src/os/windows/vm/jvm_windows.h	Thu Oct 04 20:09:46 2012 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -61,8 +61,6 @@
 
 typedef int socklen_t;
 
-// #include "jni.h"
-
 #define JNI_ONLOAD_SYMBOLS      {"_JNI_OnLoad@8", "JNI_OnLoad"}
 #define JNI_ONUNLOAD_SYMBOLS    {"_JNI_OnUnload@8", "JNI_OnUnload"}
 #define JVM_ONLOAD_SYMBOLS      {"_JVM_OnLoad@12", "JVM_OnLoad"}
@@ -108,10 +106,7 @@
  * File I/O
  */
 
-// #include <sys/types.h>
-// #include <sys/stat.h>
-// #include <fcntl.h>
-// #include <errno.h>
+#include <sys/stat.h>
 
 /* O Flags */
 

--- a/src/share/vm/runtime/globals.hpp	Thu Oct 04 19:52:09 2012 -0400
+++ b/src/share/vm/runtime/globals.hpp	Thu Oct 04 20:09:46 2012 -0400
@@ -1066,9 +1066,6 @@
                                                                             \
   product(bool, MonitorInUseLists, false, "Track Monitors for Deflation")   \
                                                                             \
-  product(intx, Atomics, 0,                                                 \
-          "(Unsafe,Unstable) Diagnostic - Controls emission of atomics")    \
-                                                                            \
   product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \
                                                                             \
   product(intx, SyncVerbose, 0, "(Unstable)" )                              \