1 /*
   2  * Copyright (c) 1999, 2009, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25   //
  26   // NOTE: we are back in class os here, not win32
  27   //
  28 #ifdef AMD64
  29   static jint      (*atomic_xchg_func)          (jint,      volatile jint*);
  30   static intptr_t  (*atomic_xchg_ptr_func)      (intptr_t,  volatile intptr_t*);
  31 
  32   static jint      (*atomic_cmpxchg_func)       (jint,      volatile jint*,  jint);
  33   static jlong     (*atomic_cmpxchg_long_func)  (jlong,     volatile jlong*, jlong);
  34 
  35   static jint      (*atomic_add_func)           (jint,      volatile jint*);
  36   static intptr_t  (*atomic_add_ptr_func)       (intptr_t,  volatile intptr_t*);
  37 
  38   static jint      atomic_xchg_bootstrap        (jint,      volatile jint*);
  39   static intptr_t  atomic_xchg_ptr_bootstrap    (intptr_t,  volatile intptr_t*);
  40 
  41   static jint      atomic_cmpxchg_bootstrap     (jint,      volatile jint*,  jint);
  42 #else
  43 
  44   static jlong (*atomic_cmpxchg_long_func)  (jlong, volatile jlong*, jlong);
  45 
  46 #endif // AMD64
  47 
  48   static jlong atomic_cmpxchg_long_bootstrap(jlong, volatile jlong*, jlong);
  49 
  50 #ifdef AMD64
  51   static jint      atomic_add_bootstrap         (jint,      volatile jint*);
  52   static intptr_t  atomic_add_ptr_bootstrap     (intptr_t,  volatile intptr_t*);
  53 #endif // AMD64
  54 
  55   static void setup_fpu();
  56   static bool supports_sse() { return true; }
  57 
  58   static bool      register_code_area(char *low, char *high);