Mercurial > hg > truffle
annotate src/os_cpu/linux_zero/vm/os_linux_zero.hpp @ 17442:ecc27b9d2510
Merge.
author | Chris Seaton <chris.seaton@oracle.com> |
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date | Tue, 14 Oct 2014 18:12:24 +0100 |
parents | 4ca6dc0799b6 |
children | 52b4284cb496 |
rev | line source |
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1010 | 1 /* |
1972 | 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
1266 | 3 * Copyright 2007, 2008, 2010 Red Hat, Inc. |
1010 | 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 * | |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
1010 | 23 * |
24 */ | |
25 | |
1972 | 26 #ifndef OS_CPU_LINUX_ZERO_VM_OS_LINUX_ZERO_HPP |
27 #define OS_CPU_LINUX_ZERO_VM_OS_LINUX_ZERO_HPP | |
28 | |
1010 | 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) { | |
14909 | 39 #if defined(PPC) && !defined(_LP64) |
1010 | 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)); | |
1266 | 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)); | |
1010 | 51 #else |
52 *(jlong *) dst = *(jlong *) src; | |
1266 | 53 #endif |
1010 | 54 } |
1972 | 55 |
56 #endif // OS_CPU_LINUX_ZERO_VM_OS_LINUX_ZERO_HPP |