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view hotspot/src/os_cpu/linux_i486/vm/atomic_linux_i486.inline.hpp @ 1:193df1943809 trunk
[svn] Load openjdk/jdk7/b13 into jdk/trunk.
author | xiomara |
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date | Fri, 25 May 2007 00:49:14 +0000 |
parents | a4ed3fb96592 |
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#ifdef USE_PRAGMA_IDENT_HDR #pragma ident "@(#)atomic_linux_i486.inline.hpp 1.30 07/05/17 15:48:55 JVM" #endif /* * Copyright 1999-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // Implementation of class atomic inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; } inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; } inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; } //inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; } inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; } inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; } inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; } inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; } inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; } //inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; } inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; } inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; } // Adding a lock prefix to an instruction on MP machine #define LOCK_IF_MP(mp) "cmp $0, " #mp "; je 1f; lock; 1: " inline jint Atomic::add (jint add_value, volatile jint* dest) { jint addend = add_value; int mp = os::is_MP(); __asm__ volatile ( LOCK_IF_MP(%3) "xaddl %0,(%2)" : "=r" (addend) : "0" (addend), "r" (dest), "r" (mp) : "cc", "memory"); return addend + add_value; } inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { return (intptr_t)Atomic::add((jint)add_value, (volatile jint*)dest); } inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { return (void*)Atomic::add((jint)add_value, (volatile jint*)dest); } inline void Atomic::inc (volatile jint* dest) { int mp = os::is_MP(); __asm__ volatile (LOCK_IF_MP(%1) "addl $1,(%0)" : : "r" (dest), "r" (mp) : "cc", "memory"); } inline void Atomic::inc_ptr(volatile intptr_t* dest) { inc((volatile jint*)dest); } inline void Atomic::inc_ptr(volatile void* dest) { inc((volatile jint*)dest); } inline void Atomic::dec (volatile jint* dest) { int mp = os::is_MP(); __asm__ volatile (LOCK_IF_MP(%1) "subl $1,(%0)" : : "r" (dest), "r" (mp) : "cc", "memory"); } inline void Atomic::dec_ptr(volatile intptr_t* dest) { dec((volatile jint*)dest); } inline void Atomic::dec_ptr(volatile void* dest) { dec((volatile jint*)dest); } inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { __asm__ volatile ( "xchgl (%2),%0" : "=r" (exchange_value) : "0" (exchange_value), "r" (dest) : "memory"); return exchange_value; } inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest); } inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { return (void*)xchg((jint)exchange_value, (volatile jint*)dest); } inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { int mp = os::is_MP(); __asm__ volatile (LOCK_IF_MP(%4) "cmpxchgl %1,(%3)" : "=a" (exchange_value) : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp) : "cc", "memory"); return exchange_value; } extern "C" { // defined in linux_i486.s jlong _Atomic_cmpxchg_long(jlong, volatile jlong*, jlong, bool); } inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { return _Atomic_cmpxchg_long(exchange_value, dest, compare_value, os::is_MP()); } inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); } inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); }