atomic_bsd_x86.hpp revision 13038:ae91ec8b554a
12786Ssos/* 22786Ssos * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved. 32786Ssos * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 42786Ssos * 52786Ssos * This code is free software; you can redistribute it and/or modify it 62786Ssos * under the terms of the GNU General Public License version 2 only, as 72786Ssos * published by the Free Software Foundation. 86851Ssos * 92786Ssos * This code is distributed in the hope that it will be useful, but WITHOUT 102786Ssos * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 112786Ssos * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 122786Ssos * version 2 for more details (a copy is included in the LICENSE file that 132786Ssos * accompanied this code). 142786Ssos * 152786Ssos * You should have received a copy of the GNU General Public License version 162786Ssos * 2 along with this work; if not, write to the Free Software Foundation, 172786Ssos * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 182786Ssos * 197420Ssos * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 204686Sache * or visit www.oracle.com if you need additional information or have any 212786Ssos * questions. 222786Ssos * 232786Ssos */ 242786Ssos 252786Ssos#ifndef OS_CPU_BSD_X86_VM_ATOMIC_BSD_X86_HPP 262786Ssos#define OS_CPU_BSD_X86_VM_ATOMIC_BSD_X86_HPP 272786Ssos 282786Ssos#include "runtime/os.hpp" 292786Ssos 302786Ssos// Implementation of class atomic 312786Ssos 322786Ssosinline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; } 332786Ssosinline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; } 342786Ssosinline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; } 352786Ssosinline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; } 362786Ssosinline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; } 372786Ssos 382786Ssosinline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; } 392786Ssosinline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; } 402786Ssosinline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; } 412786Ssosinline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; } 422786Ssosinline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; } 432786Ssos 442786Ssos 452786Ssosinline jint Atomic::add (jint add_value, volatile jint* dest) { 462786Ssos jint addend = add_value; 472786Ssos __asm__ volatile ( "lock xaddl %0,(%2)" 482786Ssos : "=r" (addend) 492786Ssos : "0" (addend), "r" (dest) 502786Ssos : "cc", "memory"); 512786Ssos return addend + add_value; 522786Ssos} 532786Ssos 542786Ssosinline void Atomic::inc (volatile jint* dest) { 552786Ssos __asm__ volatile ( "lock addl $1,(%0)" : 562786Ssos : "r" (dest) : "cc", "memory"); 572786Ssos} 582786Ssos 592786Ssosinline void Atomic::inc_ptr(volatile void* dest) { 602786Ssos inc_ptr((volatile intptr_t*)dest); 612786Ssos} 626851Ssos 632786Ssosinline void Atomic::dec (volatile jint* dest) { 642786Ssos __asm__ volatile ( "lock subl $1,(%0)" : 652786Ssos : "r" (dest) : "cc", "memory"); 662786Ssos} 672786Ssos 682786Ssosinline void Atomic::dec_ptr(volatile void* dest) { 692786Ssos dec_ptr((volatile intptr_t*)dest); 702786Ssos} 712786Ssos 722786Ssosinline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { 732786Ssos __asm__ volatile ( "xchgl (%2),%0" 742786Ssos : "=r" (exchange_value) 752786Ssos : "0" (exchange_value), "r" (dest) 762786Ssos : "memory"); 772786Ssos return exchange_value; 782786Ssos} 792786Ssos 802786Ssosinline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { 815994Ssos return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest); 822786Ssos} 832786Ssos 842786Ssos#define VM_HAS_SPECIALIZED_CMPXCHG_BYTE 852786Ssosinline jbyte Atomic::cmpxchg (jbyte exchange_value, volatile jbyte* dest, jbyte compare_value, cmpxchg_memory_order order) { 862786Ssos __asm__ volatile ( "lock cmpxchgb %1,(%3)" 872786Ssos : "=a" (exchange_value) 886045Ssos : "q" (exchange_value), "a" (compare_value), "r" (dest) 892786Ssos : "cc", "memory"); 902786Ssos return exchange_value; 912786Ssos} 922786Ssos 932786Ssosinline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value, cmpxchg_memory_order order) { 942786Ssos __asm__ volatile ( "lock cmpxchgl %1,(%3)" 952786Ssos : "=a" (exchange_value) 962786Ssos : "r" (exchange_value), "a" (compare_value), "r" (dest) 972786Ssos : "cc", "memory"); 982786Ssos return exchange_value; 992786Ssos} 1002786Ssos 1012786Ssos#ifdef AMD64 1022786Ssosinline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; } 1032786Ssosinline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; } 1042786Ssos 1052786Ssosinline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { 1062786Ssos intptr_t addend = add_value; 1072786Ssos __asm__ __volatile__ ( "lock xaddq %0,(%2)" 1086851Ssos : "=r" (addend) 1092786Ssos : "0" (addend), "r" (dest) 1106851Ssos : "cc", "memory"); 1116851Ssos return addend + add_value; 1126851Ssos} 113 114inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { 115 return (void*)add_ptr(add_value, (volatile intptr_t*)dest); 116} 117 118inline void Atomic::inc_ptr(volatile intptr_t* dest) { 119 __asm__ __volatile__ ( "lock addq $1,(%0)" 120 : 121 : "r" (dest) 122 : "cc", "memory"); 123} 124 125inline void Atomic::dec_ptr(volatile intptr_t* dest) { 126 __asm__ __volatile__ ( "lock subq $1,(%0)" 127 : 128 : "r" (dest) 129 : "cc", "memory"); 130} 131 132inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { 133 __asm__ __volatile__ ("xchgq (%2),%0" 134 : "=r" (exchange_value) 135 : "0" (exchange_value), "r" (dest) 136 : "memory"); 137 return exchange_value; 138} 139 140inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) { 141 __asm__ __volatile__ ( "lock cmpxchgq %1,(%3)" 142 : "=a" (exchange_value) 143 : "r" (exchange_value), "a" (compare_value), "r" (dest) 144 : "cc", "memory"); 145 return exchange_value; 146} 147 148inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) { 149 return (intptr_t)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value, order); 150} 151 152inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) { 153 return (void*)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value, order); 154} 155 156inline jlong Atomic::load(volatile jlong* src) { return *src; } 157 158#else // !AMD64 159 160inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { 161 return (intptr_t)Atomic::add((jint)add_value, (volatile jint*)dest); 162} 163 164inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { 165 return (void*)Atomic::add((jint)add_value, (volatile jint*)dest); 166} 167 168 169inline void Atomic::inc_ptr(volatile intptr_t* dest) { 170 inc((volatile jint*)dest); 171} 172 173inline void Atomic::dec_ptr(volatile intptr_t* dest) { 174 dec((volatile jint*)dest); 175} 176 177inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { 178 return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest); 179} 180 181extern "C" { 182 // defined in bsd_x86.s 183 jlong _Atomic_cmpxchg_long(jlong, volatile jlong*, jlong, bool); 184 void _Atomic_move_long(volatile jlong* src, volatile jlong* dst); 185} 186 187inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) { 188 return _Atomic_cmpxchg_long(exchange_value, dest, compare_value, os::is_MP()); 189} 190 191inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) { 192 return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value, order); 193} 194 195inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) { 196 return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value, order); 197} 198 199inline jlong Atomic::load(volatile jlong* src) { 200 volatile jlong dest; 201 _Atomic_move_long(src, &dest); 202 return dest; 203} 204 205inline void Atomic::store(jlong store_value, jlong* dest) { 206 _Atomic_move_long((volatile jlong*)&store_value, (volatile jlong*)dest); 207} 208 209inline void Atomic::store(jlong store_value, volatile jlong* dest) { 210 _Atomic_move_long((volatile jlong*)&store_value, dest); 211} 212 213#endif // AMD64 214 215#endif // OS_CPU_BSD_X86_VM_ATOMIC_BSD_X86_HPP 216