author | glaubitz |
Fri, 24 Nov 2017 12:16:25 +0100 | |
changeset 48126 | f2412517fa70 |
parent 47216 | 71c04702a3d5 |
child 49914 | f82a7db36d30 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved. |
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* Copyright 2007, 2008, 2010 Red Hat, Inc. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#ifndef OS_CPU_LINUX_ZERO_VM_OS_LINUX_ZERO_HPP |
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#define OS_CPU_LINUX_ZERO_VM_OS_LINUX_ZERO_HPP |
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static void setup_fpu() {} |
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static bool is_allocatable(size_t bytes); |
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// Used to register dynamic code cache area with the OS |
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// Note: Currently only used in 64 bit Windows implementations |
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static bool register_code_area(char *low, char *high) { return true; } |
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// Atomically copy 64 bits of data |
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static void atomic_copy64(const volatile void *src, volatile void *dst) { |
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#if defined(PPC32) && !defined(__SPE__) |
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double tmp; |
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asm volatile ("lfd %0, %2\n" |
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"stfd %0, %1\n" |
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: "=&f"(tmp), "=Q"(*(volatile double*)dst) |
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: "Q"(*(volatile double*)src)); |
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#elif defined(PPC32) && defined(__SPE__) |
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long tmp; |
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asm volatile ("evldd %0, %2\n" |
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"evstdd %0, %1\n" |
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: "=&r"(tmp), "=Q"(*(volatile long*)dst) |
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: "Q"(*(volatile long*)src)); |
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#elif defined(S390) && !defined(_LP64) |
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double tmp; |
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asm volatile ("ld %0, 0(%1)\n" |
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"std %0, 0(%2)\n" |
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: "=r"(tmp) |
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: "a"(src), "a"(dst)); |
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#else |
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*(jlong *) dst = *(const jlong *) src; |
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#endif |
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} |
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#endif // OS_CPU_LINUX_ZERO_VM_OS_LINUX_ZERO_HPP |