1/* 2 * Copyright (c) 1999, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#ifndef OS_CPU_LINUX_SPARC_VM_ATOMIC_LINUX_SPARC_INLINE_HPP 26#define OS_CPU_LINUX_SPARC_VM_ATOMIC_LINUX_SPARC_INLINE_HPP 27 28// Implementation of class atomic 29 30inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; } 31inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; } 32inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; } 33inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; } 34inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; } 35inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; } 36 37inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; } 38inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; } 39inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; } 40inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; } 41inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; } 42inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; } 43 44inline void Atomic::inc (volatile jint* dest) { (void)add (1, dest); } 45inline void Atomic::inc_ptr(volatile intptr_t* dest) { (void)add_ptr(1, dest); } 46inline void Atomic::inc_ptr(volatile void* dest) { (void)add_ptr(1, dest); } 47 48inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); } 49inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); } 50inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); } 51 52inline jlong Atomic::load(volatile jlong* src) { return *src; } 53 54inline jint Atomic::add (jint add_value, volatile jint* dest) { 55 intptr_t rv; 56 __asm__ volatile( 57 "1: \n\t" 58 " ld [%2], %%o2\n\t" 59 " add %1, %%o2, %%o3\n\t" 60 " cas [%2], %%o2, %%o3\n\t" 61 " cmp %%o2, %%o3\n\t" 62 " bne 1b\n\t" 63 " nop\n\t" 64 " add %1, %%o2, %0\n\t" 65 : "=r" (rv) 66 : "r" (add_value), "r" (dest) 67 : "memory", "o2", "o3"); 68 return rv; 69} 70 71inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { 72 intptr_t rv; 73#ifdef _LP64 74 __asm__ volatile( 75 "1: \n\t" 76 " ldx [%2], %%o2\n\t" 77 " add %1, %%o2, %%o3\n\t" 78 " casx [%2], %%o2, %%o3\n\t" 79 " cmp %%o2, %%o3\n\t" 80 " bne %%xcc, 1b\n\t" 81 " nop\n\t" 82 " add %1, %%o2, %0\n\t" 83 : "=r" (rv) 84 : "r" (add_value), "r" (dest) 85 : "memory", "o2", "o3"); 86#else 87 __asm__ volatile( 88 "1: \n\t" 89 " ld [%2], %%o2\n\t" 90 " add %1, %%o2, %%o3\n\t" 91 " cas [%2], %%o2, %%o3\n\t" 92 " cmp %%o2, %%o3\n\t" 93 " bne 1b\n\t" 94 " nop\n\t" 95 " add %1, %%o2, %0\n\t" 96 : "=r" (rv) 97 : "r" (add_value), "r" (dest) 98 : "memory", "o2", "o3"); 99#endif // _LP64 100 return rv; 101} 102 103inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { 104 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest); 105} 106 107 108inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { 109 intptr_t rv = exchange_value; 110 __asm__ volatile( 111 " swap [%2],%1\n\t" 112 : "=r" (rv) 113 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest) 114 : "memory"); 115 return rv; 116} 117 118inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { 119 intptr_t rv = exchange_value; 120#ifdef _LP64 121 __asm__ volatile( 122 "1:\n\t" 123 " mov %1, %%o3\n\t" 124 " ldx [%2], %%o2\n\t" 125 " casx [%2], %%o2, %%o3\n\t" 126 " cmp %%o2, %%o3\n\t" 127 " bne %%xcc, 1b\n\t" 128 " nop\n\t" 129 " mov %%o2, %0\n\t" 130 : "=r" (rv) 131 : "r" (exchange_value), "r" (dest) 132 : "memory", "o2", "o3"); 133#else 134 __asm__ volatile( 135 "swap [%2],%1\n\t" 136 : "=r" (rv) 137 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest) 138 : "memory"); 139#endif // _LP64 140 return rv; 141} 142 143inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { 144 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest); 145} 146 147 148inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value, cmpxchg_memory_order order) { 149 jint rv; 150 __asm__ volatile( 151 " cas [%2], %3, %0" 152 : "=r" (rv) 153 : "0" (exchange_value), "r" (dest), "r" (compare_value) 154 : "memory"); 155 return rv; 156} 157 158inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) { 159#ifdef _LP64 160 jlong rv; 161 __asm__ volatile( 162 " casx [%2], %3, %0" 163 : "=r" (rv) 164 : "0" (exchange_value), "r" (dest), "r" (compare_value) 165 : "memory"); 166 return rv; 167#else 168 volatile jlong_accessor evl, cvl, rv; 169 evl.long_value = exchange_value; 170 cvl.long_value = compare_value; 171 172 __asm__ volatile( 173 " sllx %2, 32, %2\n\t" 174 " srl %3, 0, %3\n\t" 175 " or %2, %3, %2\n\t" 176 " sllx %5, 32, %5\n\t" 177 " srl %6, 0, %6\n\t" 178 " or %5, %6, %5\n\t" 179 " casx [%4], %5, %2\n\t" 180 " srl %2, 0, %1\n\t" 181 " srlx %2, 32, %0\n\t" 182 : "=r" (rv.words[0]), "=r" (rv.words[1]) 183 : "r" (evl.words[0]), "r" (evl.words[1]), "r" (dest), "r" (cvl.words[0]), "r" (cvl.words[1]) 184 : "memory"); 185 186 return rv.long_value; 187#endif 188} 189 190inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) { 191 intptr_t rv; 192#ifdef _LP64 193 __asm__ volatile( 194 " casx [%2], %3, %0" 195 : "=r" (rv) 196 : "0" (exchange_value), "r" (dest), "r" (compare_value) 197 : "memory"); 198#else 199 __asm__ volatile( 200 " cas [%2], %3, %0" 201 : "=r" (rv) 202 : "0" (exchange_value), "r" (dest), "r" (compare_value) 203 : "memory"); 204#endif // _LP64 205 return rv; 206} 207 208inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) { 209 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value, order); 210} 211 212#endif // OS_CPU_LINUX_SPARC_VM_ATOMIC_LINUX_SPARC_INLINE_HPP 213