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comparison src/os_cpu/bsd_zero/vm/os_bsd_zero.hpp @ 3960:f08d439fab8c

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7089790: integrate bsd-port changes Reviewed-by: kvn, twisti, jrose Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
author never
date Sun, 25 Sep 2011 16:03:29 -0700
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children 0f03ff49c720
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3959:eda6988c0d81 3960:f08d439fab8c
1 /*
2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2007, 2008, 2010 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef OS_CPU_BSD_ZERO_VM_OS_BSD_ZERO_HPP
27 #define OS_CPU_BSD_ZERO_VM_OS_BSD_ZERO_HPP
28
29 static void setup_fpu() {}
30
31 static bool is_allocatable(size_t bytes);
32
33 // Used to register dynamic code cache area with the OS
34 // Note: Currently only used in 64 bit Windows implementations
35 static bool register_code_area(char *low, char *high) { return true; }
36
37 // Atomically copy 64 bits of data
38 static void atomic_copy64(volatile void *src, volatile void *dst) {
39 #if defined(PPC) && !defined(_LP64)
40 double tmp;
41 asm volatile ("lfd %0, 0(%1)\n"
42 "stfd %0, 0(%2)\n"
43 : "=f"(tmp)
44 : "b"(src), "b"(dst));
45 #elif defined(S390) && !defined(_LP64)
46 double tmp;
47 asm volatile ("ld %0, 0(%1)\n"
48 "std %0, 0(%2)\n"
49 : "=r"(tmp)
50 : "a"(src), "a"(dst));
51 #else
52 *(jlong *) dst = *(jlong *) src;
53 #endif
54 }
55
56 #endif // OS_CPU_BSD_ZERO_VM_OS_BSD_ZERO_HPP