JDK14/Java14源码在线阅读

/*
 * Copyright (c) 1999, 2019, 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.
 *
 */

#ifndef OS_CPU_WINDOWS_X86_OS_WINDOWS_X86_HPP
#define OS_CPU_WINDOWS_X86_OS_WINDOWS_X86_HPP

  //
  // NOTE: we are back in class os here, not win32
  //
#ifdef AMD64
  static int32_t   (*atomic_xchg_func)          (int32_t, volatile int32_t*);
  static int64_t   (*atomic_xchg_long_func)     (int64_t, volatile int64_t*);

  static int32_t   (*atomic_cmpxchg_func)       (int32_t,  volatile int32_t*, int32_t);
  static int8_t    (*atomic_cmpxchg_byte_func)  (int8_t,   volatile int8_t*,  int8_t);
  static int64_t   (*atomic_cmpxchg_long_func)  (int64_t,  volatile int64_t*, int64_t);

  static int32_t   (*atomic_add_func)           (int32_t,  volatile int32_t*);
  static int64_t   (*atomic_add_long_func)      (int64_t,  volatile int64_t*);

  static int32_t   atomic_xchg_bootstrap        (int32_t,  volatile int32_t*);
  static int64_t   atomic_xchg_long_bootstrap   (int64_t,  volatile int64_t*);

  static int32_t   atomic_cmpxchg_bootstrap     (int32_t,  volatile int32_t*, int32_t);
  static int8_t    atomic_cmpxchg_byte_bootstrap(int8_t,   volatile int8_t*,  int8_t);
#else

  static int64_t (*atomic_cmpxchg_long_func)  (int64_t, volatile int64_t*, int64_t);

#endif // AMD64

  static int64_t atomic_cmpxchg_long_bootstrap(int64_t, volatile int64_t*, int64_t);

#ifdef AMD64
  static int32_t  atomic_add_bootstrap         (int32_t,  volatile int32_t*);
  static int64_t  atomic_add_long_bootstrap    (int64_t,  volatile int64_t*);
#endif // AMD64

  static void setup_fpu();
  static bool supports_sse() { return true; }

  static jlong rdtsc();


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