| /* |
| * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Copyright 2007, 2008, 2009 Red Hat, Inc. |
| * 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_ZERO_VM_ORDERACCESS_BSD_ZERO_INLINE_HPP |
| #define OS_CPU_BSD_ZERO_VM_ORDERACCESS_BSD_ZERO_INLINE_HPP |
| |
| #include "runtime/orderAccess.hpp" |
| #include "vm_version_zero.hpp" |
| |
| #ifdef ARM |
| |
| /* |
| * ARM Kernel helper for memory barrier. |
| * Using __asm __volatile ("":::"memory") does not work reliable on ARM |
| * and gcc __sync_synchronize(); implementation does not use the kernel |
| * helper for all gcc versions so it is unreliable to use as well. |
| */ |
| typedef void (__kernel_dmb_t) (void); |
| #define __kernel_dmb (*(__kernel_dmb_t *) 0xffff0fa0) |
| |
| #define FULL_MEM_BARRIER __kernel_dmb() |
| #define READ_MEM_BARRIER __kernel_dmb() |
| #define WRITE_MEM_BARRIER __kernel_dmb() |
| |
| #else // ARM |
| |
| #define FULL_MEM_BARRIER __sync_synchronize() |
| |
| #ifdef PPC |
| |
| #ifdef __NO_LWSYNC__ |
| #define READ_MEM_BARRIER __asm __volatile ("sync":::"memory") |
| #define WRITE_MEM_BARRIER __asm __volatile ("sync":::"memory") |
| #else |
| #define READ_MEM_BARRIER __asm __volatile ("lwsync":::"memory") |
| #define WRITE_MEM_BARRIER __asm __volatile ("lwsync":::"memory") |
| #endif |
| |
| #else // PPC |
| |
| #define READ_MEM_BARRIER __asm __volatile ("":::"memory") |
| #define WRITE_MEM_BARRIER __asm __volatile ("":::"memory") |
| |
| #endif // PPC |
| |
| #endif // ARM |
| |
| |
| inline void OrderAccess::loadload() { acquire(); } |
| inline void OrderAccess::storestore() { release(); } |
| inline void OrderAccess::loadstore() { acquire(); } |
| inline void OrderAccess::storeload() { fence(); } |
| |
| inline void OrderAccess::acquire() { |
| READ_MEM_BARRIER; |
| } |
| |
| inline void OrderAccess::release() { |
| WRITE_MEM_BARRIER; |
| } |
| |
| inline void OrderAccess::fence() { |
| FULL_MEM_BARRIER; |
| } |
| |
| inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { jbyte data = *p; acquire(); return data; } |
| inline jshort OrderAccess::load_acquire(volatile jshort* p) { jshort data = *p; acquire(); return data; } |
| inline jint OrderAccess::load_acquire(volatile jint* p) { jint data = *p; acquire(); return data; } |
| inline jlong OrderAccess::load_acquire(volatile jlong* p) { |
| jlong tmp; |
| os::atomic_copy64(p, &tmp); |
| acquire(); |
| return tmp; |
| } |
| inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { jubyte data = *p; acquire(); return data; } |
| inline jushort OrderAccess::load_acquire(volatile jushort* p) { jushort data = *p; acquire(); return data; } |
| inline juint OrderAccess::load_acquire(volatile juint* p) { juint data = *p; acquire(); return data; } |
| inline julong OrderAccess::load_acquire(volatile julong* p) { |
| julong tmp; |
| os::atomic_copy64(p, &tmp); |
| acquire(); |
| return tmp; |
| } |
| inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { jfloat data = *p; acquire(); return data; } |
| inline jdouble OrderAccess::load_acquire(volatile jdouble* p) { |
| jdouble tmp; |
| os::atomic_copy64(p, &tmp); |
| acquire(); |
| return tmp; |
| } |
| |
| inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) { |
| intptr_t data = *p; |
| acquire(); |
| return data; |
| } |
| inline void* OrderAccess::load_ptr_acquire(volatile void* p) { |
| void *data = *(void* volatile *)p; |
| acquire(); |
| return data; |
| } |
| inline void* OrderAccess::load_ptr_acquire(const volatile void* p) { |
| void *data = *(void* const volatile *)p; |
| acquire(); |
| return data; |
| } |
| |
| inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { release(); *p = v; } |
| inline void OrderAccess::release_store(volatile jshort* p, jshort v) { release(); *p = v; } |
| inline void OrderAccess::release_store(volatile jint* p, jint v) { release(); *p = v; } |
| inline void OrderAccess::release_store(volatile jlong* p, jlong v) |
| { release(); os::atomic_copy64(&v, p); } |
| inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { release(); *p = v; } |
| inline void OrderAccess::release_store(volatile jushort* p, jushort v) { release(); *p = v; } |
| inline void OrderAccess::release_store(volatile juint* p, juint v) { release(); *p = v; } |
| inline void OrderAccess::release_store(volatile julong* p, julong v) |
| { release(); os::atomic_copy64(&v, p); } |
| inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { release(); *p = v; } |
| inline void OrderAccess::release_store(volatile jdouble* p, jdouble v) |
| { release(); os::atomic_copy64(&v, p); } |
| |
| inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { release(); *p = v; } |
| inline void OrderAccess::release_store_ptr(volatile void* p, void* v) |
| { release(); *(void* volatile *)p = v; } |
| |
| inline void OrderAccess::store_fence(jbyte* p, jbyte v) { *p = v; fence(); } |
| inline void OrderAccess::store_fence(jshort* p, jshort v) { *p = v; fence(); } |
| inline void OrderAccess::store_fence(jint* p, jint v) { *p = v; fence(); } |
| inline void OrderAccess::store_fence(jlong* p, jlong v) { os::atomic_copy64(&v, p); fence(); } |
| inline void OrderAccess::store_fence(jubyte* p, jubyte v) { *p = v; fence(); } |
| inline void OrderAccess::store_fence(jushort* p, jushort v) { *p = v; fence(); } |
| inline void OrderAccess::store_fence(juint* p, juint v) { *p = v; fence(); } |
| inline void OrderAccess::store_fence(julong* p, julong v) { os::atomic_copy64(&v, p); fence(); } |
| inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; fence(); } |
| inline void OrderAccess::store_fence(jdouble* p, jdouble v) { os::atomic_copy64(&v, p); fence(); } |
| |
| inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { *p = v; fence(); } |
| inline void OrderAccess::store_ptr_fence(void** p, void* v) { *p = v; fence(); } |
| |
| inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { release_store(p, v); fence(); } |
| inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { release_store(p, v); fence(); } |
| inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { release_store(p, v); fence(); } |
| inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { release_store(p, v); fence(); } |
| inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { release_store(p, v); fence(); } |
| inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { release_store(p, v); fence(); } |
| inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { release_store(p, v); fence(); } |
| inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { release_store(p, v); fence(); } |
| inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { release_store(p, v); fence(); } |
| inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { release_store(p, v); fence(); } |
| |
| inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { release_store_ptr(p, v); fence(); } |
| inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { release_store_ptr(p, v); fence(); } |
| |
| #endif // OS_CPU_BSD_ZERO_VM_ORDERACCESS_BSD_ZERO_INLINE_HPP |