--- /dev/null Wed Sep 21 11:42:08 2011 +++ new/src/os_cpu/bsd_x86/vm/atomic_bsd_x86.inline.hpp Wed Sep 21 11:42:38 2011 @@ -0,0 +1,221 @@ +/* + * Copyright (c) 1999, 2011, 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_BSD_X86_VM_ATOMIC_BSD_X86_INLINE_HPP +#define OS_CPU_BSD_X86_VM_ATOMIC_BSD_X86_INLINE_HPP + +#include "orderAccess_bsd_x86.inline.hpp" +#include "runtime/atomic.hpp" +#include "runtime/os.hpp" +#include "vm_version_x86.hpp" + +// 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_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_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 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 void* dest) { + inc_ptr((volatile intptr_t*)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 void* dest) { + dec_ptr((volatile intptr_t*)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 void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { + return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)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; +} + +#ifdef AMD64 +inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; } +inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; } + +inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { + intptr_t addend = add_value; + bool mp = os::is_MP(); + __asm__ __volatile__ (LOCK_IF_MP(%3) "xaddq %0,(%2)" + : "=r" (addend) + : "0" (addend), "r" (dest), "r" (mp) + : "cc", "memory"); + return addend + add_value; +} + +inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { + return (void*)add_ptr(add_value, (volatile intptr_t*)dest); +} + +inline void Atomic::inc_ptr(volatile intptr_t* dest) { + bool mp = os::is_MP(); + __asm__ __volatile__ (LOCK_IF_MP(%1) "addq $1,(%0)" + : + : "r" (dest), "r" (mp) + : "cc", "memory"); +} + +inline void Atomic::dec_ptr(volatile intptr_t* dest) { + bool mp = os::is_MP(); + __asm__ __volatile__ (LOCK_IF_MP(%1) "subq $1,(%0)" + : + : "r" (dest), "r" (mp) + : "cc", "memory"); +} + +inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { + __asm__ __volatile__ ("xchgq (%2),%0" + : "=r" (exchange_value) + : "0" (exchange_value), "r" (dest) + : "memory"); + return exchange_value; +} + +inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { + bool mp = os::is_MP(); + __asm__ __volatile__ (LOCK_IF_MP(%4) "cmpxchgq %1,(%3)" + : "=a" (exchange_value) + : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp) + : "cc", "memory"); + return exchange_value; +} + +inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { + return (intptr_t)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value); +} + +inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { + return (void*)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value); +} + +inline jlong Atomic::load(volatile jlong* src) { return *src; } + +#else // !AMD64 + +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_ptr(volatile intptr_t* dest) { + inc((volatile jint*)dest); +} + +inline void Atomic::dec_ptr(volatile intptr_t* dest) { + dec((volatile jint*)dest); +} + +inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { + return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest); +} + +extern "C" { + // defined in bsd_x86.s + jlong _Atomic_cmpxchg_long(jlong, volatile jlong*, jlong, bool); + void _Atomic_move_long(volatile jlong* src, volatile jlong* dst); +} + +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); +} + +inline jlong Atomic::load(volatile jlong* src) { + volatile jlong dest; + _Atomic_move_long(src, &dest); + return dest; +} + +inline void Atomic::store(jlong store_value, jlong* dest) { + _Atomic_move_long((volatile jlong*)&store_value, (volatile jlong*)dest); +} + +inline void Atomic::store(jlong store_value, volatile jlong* dest) { + _Atomic_move_long((volatile jlong*)&store_value, dest); +} + +#endif // AMD64 + +#endif // OS_CPU_BSD_X86_VM_ATOMIC_BSD_X86_INLINE_HPP