never@1445: /*
trims@1907:  * Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved.
twisti@1701:  * Copyright 2007, 2008, 2010 Red Hat, Inc.
never@1445:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@1445:  *
never@1445:  * This code is free software; you can redistribute it and/or modify it
never@1445:  * under the terms of the GNU General Public License version 2 only, as
never@1445:  * published by the Free Software Foundation.
never@1445:  *
never@1445:  * This code is distributed in the hope that it will be useful, but WITHOUT
never@1445:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@1445:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
never@1445:  * version 2 for more details (a copy is included in the LICENSE file that
never@1445:  * accompanied this code).
never@1445:  *
never@1445:  * You should have received a copy of the GNU General Public License version
never@1445:  * 2 along with this work; if not, write to the Free Software Foundation,
never@1445:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@1445:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
never@1445:  *
never@1445:  */
never@1445: 
never@1445:   static void setup_fpu() {}
never@1445: 
never@1445:   static bool is_allocatable(size_t bytes);
never@1445: 
never@1445:   // Used to register dynamic code cache area with the OS
never@1445:   // Note: Currently only used in 64 bit Windows implementations
never@1445:   static bool register_code_area(char *low, char *high) { return true; }
never@1445: 
never@1445:   // Atomically copy 64 bits of data
never@1445:   static void atomic_copy64(volatile void *src, volatile void *dst) {
never@1445: #if defined(PPC) && !defined(_LP64)
never@1445:     double tmp;
never@1445:     asm volatile ("lfd  %0, 0(%1)\n"
never@1445:                   "stfd %0, 0(%2)\n"
never@1445:                   : "=f"(tmp)
never@1445:                   : "b"(src), "b"(dst));
twisti@1701: #elif defined(S390) && !defined(_LP64)
twisti@1701:     double tmp;
twisti@1701:     asm volatile ("ld  %0, 0(%1)\n"
twisti@1701:                   "std %0, 0(%2)\n"
twisti@1701:                   : "=r"(tmp)
twisti@1701:                   : "a"(src), "a"(dst));
never@1445: #else
never@1445:     *(jlong *) dst = *(jlong *) src;
twisti@1701: #endif
never@1445:   }