Mercurial > hg > graal-compiler
view src/os_cpu/linux_x86/vm/os_linux_x86.hpp @ 15359:f419db49a54e
Merge.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Thu, 24 Apr 2014 12:17:13 +0200 |
parents | 4ca6dc0799b6 |
children | 89152779163c |
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/* * Copyright (c) 1999, 2012, 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_LINUX_X86_VM_OS_LINUX_X86_HPP #define OS_CPU_LINUX_X86_VM_OS_LINUX_X86_HPP static void setup_fpu(); static bool supports_sse(); static jlong rdtsc(); static bool is_allocatable(size_t bytes); // Used to register dynamic code cache area with the OS // Note: Currently only used in 64 bit Windows implementations static bool register_code_area(char *low, char *high) { return true; } /* * Work-around for broken NX emulation using CS limit, Red Hat patch "Exec-Shield" * (IA32 only). * * Map and execute at a high VA to prevent CS lazy updates race with SMP MM * invalidation.Further code generation by the JVM will no longer cause CS limit * updates. * * Affects IA32: RHEL 5 & 6, Ubuntu 10.04 (LTS), 10.10, 11.04, 11.10, 12.04. * @see JDK-8023956 */ static void workaround_expand_exec_shield_cs_limit(); #endif // OS_CPU_LINUX_X86_VM_OS_LINUX_X86_HPP