atomic_linux_x86.inline.hpp revision 0
0N/A/*
0N/A * Copyright 1999-2005 Sun Microsystems, Inc. All Rights Reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
0N/A * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
0N/A * CA 95054 USA or visit www.sun.com if you need additional information or
0N/A * have any questions.
0N/A *
0N/A */
0N/A
0N/A// Implementation of class atomic
0N/A
0N/Ainline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; }
0N/Ainline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; }
0N/Ainline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; }
0N/Ainline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; }
0N/Ainline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; }
0N/A
0N/Ainline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; }
0N/Ainline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; }
0N/Ainline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; }
0N/Ainline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; }
0N/Ainline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; }
0N/A
0N/A
0N/A// Adding a lock prefix to an instruction on MP machine
0N/A#define LOCK_IF_MP(mp) "cmp $0, " #mp "; je 1f; lock; 1: "
0N/A
0N/Ainline jint Atomic::add (jint add_value, volatile jint* dest) {
0N/A jint addend = add_value;
0N/A int mp = os::is_MP();
0N/A __asm__ volatile ( LOCK_IF_MP(%3) "xaddl %0,(%2)"
0N/A : "=r" (addend)
0N/A : "0" (addend), "r" (dest), "r" (mp)
0N/A : "cc", "memory");
0N/A return addend + add_value;
0N/A}
0N/A
0N/Ainline void Atomic::inc (volatile jint* dest) {
0N/A int mp = os::is_MP();
0N/A __asm__ volatile (LOCK_IF_MP(%1) "addl $1,(%0)" :
0N/A : "r" (dest), "r" (mp) : "cc", "memory");
0N/A}
0N/A
0N/Ainline void Atomic::inc_ptr(volatile void* dest) {
0N/A inc_ptr((volatile intptr_t*)dest);
0N/A}
0N/A
0N/Ainline void Atomic::dec (volatile jint* dest) {
0N/A int mp = os::is_MP();
0N/A __asm__ volatile (LOCK_IF_MP(%1) "subl $1,(%0)" :
0N/A : "r" (dest), "r" (mp) : "cc", "memory");
0N/A}
0N/A
0N/Ainline void Atomic::dec_ptr(volatile void* dest) {
0N/A dec_ptr((volatile intptr_t*)dest);
0N/A}
0N/A
0N/Ainline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
0N/A __asm__ volatile ( "xchgl (%2),%0"
0N/A : "=r" (exchange_value)
0N/A : "0" (exchange_value), "r" (dest)
0N/A : "memory");
0N/A return exchange_value;
0N/A}
0N/A
0N/Ainline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
0N/A return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
0N/A}
0N/A
0N/A
0N/Ainline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
0N/A int mp = os::is_MP();
0N/A __asm__ volatile (LOCK_IF_MP(%4) "cmpxchgl %1,(%3)"
0N/A : "=a" (exchange_value)
0N/A : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
0N/A : "cc", "memory");
0N/A return exchange_value;
0N/A}
0N/A
0N/Aextern "C" {
0N/A // defined in linux_x86.s
0N/A jlong _Atomic_cmpxchg_long(jlong, volatile jlong*, jlong, bool);
0N/A}
0N/A
0N/A#ifdef AMD64
0N/Ainline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
0N/Ainline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
0N/A
0N/Ainline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
0N/A intptr_t addend = add_value;
0N/A bool mp = os::is_MP();
0N/A __asm__ __volatile__ (LOCK_IF_MP(%3) "xaddq %0,(%2)"
0N/A : "=r" (addend)
0N/A : "0" (addend), "r" (dest), "r" (mp)
0N/A : "cc", "memory");
0N/A return addend + add_value;
0N/A}
0N/A
0N/Ainline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
0N/A return (void*)add_ptr(add_value, (volatile intptr_t*)dest);
0N/A}
0N/A
0N/Ainline void Atomic::inc_ptr(volatile intptr_t* dest) {
0N/A bool mp = os::is_MP();
0N/A __asm__ __volatile__ (LOCK_IF_MP(%1) "addq $1,(%0)"
0N/A :
0N/A : "r" (dest), "r" (mp)
0N/A : "cc", "memory");
0N/A}
0N/A
0N/Ainline void Atomic::dec_ptr(volatile intptr_t* dest) {
0N/A bool mp = os::is_MP();
0N/A __asm__ __volatile__ (LOCK_IF_MP(%1) "subq $1,(%0)"
0N/A :
0N/A : "r" (dest), "r" (mp)
0N/A : "cc", "memory");
0N/A}
0N/A
0N/Ainline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
0N/A __asm__ __volatile__ ("xchgq (%2),%0"
0N/A : "=r" (exchange_value)
0N/A : "0" (exchange_value), "r" (dest)
0N/A : "memory");
0N/A return exchange_value;
0N/A}
0N/A
0N/Ainline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
0N/A bool mp = os::is_MP();
0N/A __asm__ __volatile__ (LOCK_IF_MP(%4) "cmpxchgq %1,(%3)"
0N/A : "=a" (exchange_value)
0N/A : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
0N/A : "cc", "memory");
0N/A return exchange_value;
0N/A}
0N/A
0N/Ainline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
0N/A return (intptr_t)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value);
0N/A}
0N/A
0N/Ainline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
0N/A return (void*)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value);
0N/A}
0N/A
0N/A#else
0N/A//inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
0N/A//inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
0N/A
0N/Ainline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
0N/A return (intptr_t)Atomic::add((jint)add_value, (volatile jint*)dest);
0N/A}
0N/A
0N/Ainline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
0N/A return (void*)Atomic::add((jint)add_value, (volatile jint*)dest);
0N/A}
0N/A
0N/A
0N/Ainline void Atomic::inc_ptr(volatile intptr_t* dest) {
0N/A inc((volatile jint*)dest);
0N/A}
0N/A
0N/Ainline void Atomic::dec_ptr(volatile intptr_t* dest) {
0N/A dec((volatile jint*)dest);
0N/A}
0N/A
0N/Ainline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
0N/A return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest);
0N/A}
0N/A
0N/Ainline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
0N/A return _Atomic_cmpxchg_long(exchange_value, dest, compare_value, os::is_MP());
0N/A}
0N/A
0N/Ainline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
0N/A return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
0N/A}
0N/A
0N/Ainline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
0N/A return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
0N/A}
0N/A#endif // AMD64