--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/os_cpu/bsd_x86/vm/assembler_bsd_x86.cpp	Sun Sep 25 16:03:29 2011 -0700
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 1999, 2010, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "asm/assembler.hpp"
+#include "assembler_x86.inline.hpp"
+#include "runtime/os.hpp"
+#include "runtime/threadLocalStorage.hpp"
+
+#ifndef _LP64
+void MacroAssembler::int3() {
+  call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
+}
+
+void MacroAssembler::get_thread(Register thread) {
+  movl(thread, rsp);
+  shrl(thread, PAGE_SHIFT);
+
+  ExternalAddress tls_base((address)ThreadLocalStorage::sp_map_addr());
+  Address index(noreg, thread, Address::times_4);
+  ArrayAddress tls(tls_base, index);
+
+  movptr(thread, tls);
+}
+#else
+void MacroAssembler::int3() {
+  call(RuntimeAddress(CAST_FROM_FN_PTR(address, os::breakpoint)));
+}
+
+void MacroAssembler::get_thread(Register thread) {
+  // call pthread_getspecific
+  // void * pthread_getspecific(pthread_key_t key);
+   if (thread != rax) {
+     push(rax);
+   }
+   push(rdi);
+   push(rsi);
+   push(rdx);
+   push(rcx);
+   push(r8);
+   push(r9);
+   push(r10);
+   // XXX
+   mov(r10, rsp);
+   andq(rsp, -16);
+   push(r10);
+   push(r11);
+
+   movl(rdi, ThreadLocalStorage::thread_index());
+   call(RuntimeAddress(CAST_FROM_FN_PTR(address, pthread_getspecific)));
+
+   pop(r11);
+   pop(rsp);
+   pop(r10);
+   pop(r9);
+   pop(r8);
+   pop(rcx);
+   pop(rdx);
+   pop(rsi);
+   pop(rdi);
+   if (thread != rax) {
+       mov(thread, rax);
+       pop(rax);
+   }
+}
+#endif