orderAccess_linux_ppc.inline.hpp revision 6760:22b98ab2a69f
1/* 2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2012, 2014, SAP AG. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26#ifndef OS_CPU_LINUX_PPC_VM_ORDERACCESS_LINUX_PPC_INLINE_HPP 27#define OS_CPU_LINUX_PPC_VM_ORDERACCESS_LINUX_PPC_INLINE_HPP 28 29#include "runtime/orderAccess.hpp" 30 31#ifndef PPC64 32#error "OrderAccess currently only implemented for PPC64" 33#endif 34 35// Implementation of class OrderAccess. 36 37// 38// Machine barrier instructions: 39// 40// - sync Two-way memory barrier, aka fence. 41// - lwsync orders Store|Store, 42// Load|Store, 43// Load|Load, 44// but not Store|Load 45// - eieio orders Store|Store 46// - isync Invalidates speculatively executed instructions, 47// but isync may complete before storage accesses 48// associated with instructions preceding isync have 49// been performed. 50// 51// Semantic barrier instructions: 52// (as defined in orderAccess.hpp) 53// 54// - release orders Store|Store, (maps to lwsync) 55// Load|Store 56// - acquire orders Load|Store, (maps to lwsync) 57// Load|Load 58// - fence orders Store|Store, (maps to sync) 59// Load|Store, 60// Load|Load, 61// Store|Load 62// 63 64#define inlasm_sync() __asm__ __volatile__ ("sync" : : : "memory"); 65#define inlasm_lwsync() __asm__ __volatile__ ("lwsync" : : : "memory"); 66#define inlasm_eieio() __asm__ __volatile__ ("eieio" : : : "memory"); 67#define inlasm_isync() __asm__ __volatile__ ("isync" : : : "memory"); 68#define inlasm_release() inlasm_lwsync(); 69#define inlasm_acquire() inlasm_lwsync(); 70// Use twi-isync for load_acquire (faster than lwsync). 71#define inlasm_acquire_reg(X) __asm__ __volatile__ ("twi 0,%0,0\n isync\n" : : "r" (X) : "memory"); 72#define inlasm_fence() inlasm_sync(); 73 74inline void OrderAccess::loadload() { inlasm_lwsync(); } 75inline void OrderAccess::storestore() { inlasm_lwsync(); } 76inline void OrderAccess::loadstore() { inlasm_lwsync(); } 77inline void OrderAccess::storeload() { inlasm_fence(); } 78 79inline void OrderAccess::acquire() { inlasm_acquire(); } 80inline void OrderAccess::release() { inlasm_release(); } 81inline void OrderAccess::fence() { inlasm_fence(); } 82 83inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { register jbyte t = *p; inlasm_acquire_reg(t); return t; } 84inline jshort OrderAccess::load_acquire(volatile jshort* p) { register jshort t = *p; inlasm_acquire_reg(t); return t; } 85inline jint OrderAccess::load_acquire(volatile jint* p) { register jint t = *p; inlasm_acquire_reg(t); return t; } 86inline jlong OrderAccess::load_acquire(volatile jlong* p) { register jlong t = *p; inlasm_acquire_reg(t); return t; } 87inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { register jubyte t = *p; inlasm_acquire_reg(t); return t; } 88inline jushort OrderAccess::load_acquire(volatile jushort* p) { register jushort t = *p; inlasm_acquire_reg(t); return t; } 89inline juint OrderAccess::load_acquire(volatile juint* p) { register juint t = *p; inlasm_acquire_reg(t); return t; } 90inline julong OrderAccess::load_acquire(volatile julong* p) { return (julong)load_acquire((volatile jlong*)p); } 91inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { register jfloat t = *p; inlasm_acquire(); return t; } 92inline jdouble OrderAccess::load_acquire(volatile jdouble* p) { register jdouble t = *p; inlasm_acquire(); return t; } 93 94inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) { return (intptr_t)load_acquire((volatile jlong*)p); } 95inline void* OrderAccess::load_ptr_acquire(volatile void* p) { return (void*) load_acquire((volatile jlong*)p); } 96inline void* OrderAccess::load_ptr_acquire(const volatile void* p) { return (void*) load_acquire((volatile jlong*)p); } 97 98inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { inlasm_release(); *p = v; } 99inline void OrderAccess::release_store(volatile jshort* p, jshort v) { inlasm_release(); *p = v; } 100inline void OrderAccess::release_store(volatile jint* p, jint v) { inlasm_release(); *p = v; } 101inline void OrderAccess::release_store(volatile jlong* p, jlong v) { inlasm_release(); *p = v; } 102inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { inlasm_release(); *p = v; } 103inline void OrderAccess::release_store(volatile jushort* p, jushort v) { inlasm_release(); *p = v; } 104inline void OrderAccess::release_store(volatile juint* p, juint v) { inlasm_release(); *p = v; } 105inline void OrderAccess::release_store(volatile julong* p, julong v) { inlasm_release(); *p = v; } 106inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { inlasm_release(); *p = v; } 107inline void OrderAccess::release_store(volatile jdouble* p, jdouble v) { inlasm_release(); *p = v; } 108 109inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { inlasm_release(); *p = v; } 110inline void OrderAccess::release_store_ptr(volatile void* p, void* v) { inlasm_release(); *(void* volatile *)p = v; } 111 112inline void OrderAccess::store_fence(jbyte* p, jbyte v) { *p = v; inlasm_fence(); } 113inline void OrderAccess::store_fence(jshort* p, jshort v) { *p = v; inlasm_fence(); } 114inline void OrderAccess::store_fence(jint* p, jint v) { *p = v; inlasm_fence(); } 115inline void OrderAccess::store_fence(jlong* p, jlong v) { *p = v; inlasm_fence(); } 116inline void OrderAccess::store_fence(jubyte* p, jubyte v) { *p = v; inlasm_fence(); } 117inline void OrderAccess::store_fence(jushort* p, jushort v) { *p = v; inlasm_fence(); } 118inline void OrderAccess::store_fence(juint* p, juint v) { *p = v; inlasm_fence(); } 119inline void OrderAccess::store_fence(julong* p, julong v) { *p = v; inlasm_fence(); } 120inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; inlasm_fence(); } 121inline void OrderAccess::store_fence(jdouble* p, jdouble v) { *p = v; inlasm_fence(); } 122 123inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { *p = v; inlasm_fence(); } 124inline void OrderAccess::store_ptr_fence(void** p, void* v) { *p = v; inlasm_fence(); } 125 126inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { inlasm_release(); *p = v; inlasm_fence(); } 127inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { inlasm_release(); *p = v; inlasm_fence(); } 128inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { inlasm_release(); *p = v; inlasm_fence(); } 129inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { inlasm_release(); *p = v; inlasm_fence(); } 130inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { inlasm_release(); *p = v; inlasm_fence(); } 131inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { inlasm_release(); *p = v; inlasm_fence(); } 132inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { inlasm_release(); *p = v; inlasm_fence(); } 133inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { inlasm_release(); *p = v; inlasm_fence(); } 134inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { inlasm_release(); *p = v; inlasm_fence(); } 135inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { inlasm_release(); *p = v; inlasm_fence(); } 136 137inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { inlasm_release(); *p = v; inlasm_fence(); } 138inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { inlasm_release(); *(void* volatile *)p = v; inlasm_fence(); } 139 140#undef inlasm_sync 141#undef inlasm_lwsync 142#undef inlasm_eieio 143#undef inlasm_isync 144#undef inlasm_release 145#undef inlasm_acquire 146#undef inlasm_fence 147 148#endif // OS_CPU_LINUX_PPC_VM_ORDERACCESS_LINUX_PPC_INLINE_HPP 149