1 /* 2 * Copyright (c) 1999, 2017, 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 30 inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; } 31 inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; } 32 inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; } 33 inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; } 34 inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; } 35 inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; } 36 37 inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; } 38 inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; } 39 inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; } 40 inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; } 41 inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; } 42 inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; } 43 44 inline void Atomic::inc (volatile jint* dest) { (void)add (1, dest); } 45 inline void Atomic::inc_ptr(volatile intptr_t* dest) { (void)add_ptr(1, dest); } 46 inline void Atomic::inc_ptr(volatile void* dest) { (void)add_ptr(1, dest); } 47 48 inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); } 49 inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); } 50 inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); } 51 52 inline jlong Atomic::load(const volatile jlong* src) { return *src; } 53 54 inline 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 71 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { 72 intptr_t rv; 73 __asm__ volatile( 74 "1: \n\t" 75 " ldx [%2], %%o2\n\t" 76 " add %1, %%o2, %%o3\n\t" 77 " casx [%2], %%o2, %%o3\n\t" 78 " cmp %%o2, %%o3\n\t" 79 " bne %%xcc, 1b\n\t" 80 " nop\n\t" 81 " add %1, %%o2, %0\n\t" 82 : "=r" (rv) 83 : "r" (add_value), "r" (dest) 84 : "memory", "o2", "o3"); 85 return rv; 86 } 87 88 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { 89 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest); 90 } 91 92 93 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { 94 intptr_t rv = exchange_value; 95 __asm__ volatile( 96 " swap [%2],%1\n\t" 97 : "=r" (rv) 98 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest) 99 : "memory"); 100 return rv; 101 } 102 103 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { 104 intptr_t rv = exchange_value; 105 __asm__ volatile( 106 "1:\n\t" 107 " mov %1, %%o3\n\t" 108 " ldx [%2], %%o2\n\t" 109 " casx [%2], %%o2, %%o3\n\t" 110 " cmp %%o2, %%o3\n\t" 111 " bne %%xcc, 1b\n\t" 112 " nop\n\t" 113 " mov %%o2, %0\n\t" 114 : "=r" (rv) 115 : "r" (exchange_value), "r" (dest) 116 : "memory", "o2", "o3"); 117 return rv; 118 } 119 120 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { 121 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest); 122 } 123 124 125 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value, cmpxchg_memory_order order) { 126 jint rv; 127 __asm__ volatile( 128 " cas [%2], %3, %0" 129 : "=r" (rv) 130 : "0" (exchange_value), "r" (dest), "r" (compare_value) 131 : "memory"); 132 return rv; 133 } 134 135 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) { 136 jlong rv; 137 __asm__ volatile( 138 " casx [%2], %3, %0" 139 : "=r" (rv) 140 : "0" (exchange_value), "r" (dest), "r" (compare_value) 141 : "memory"); 142 return rv; 143 } 144 145 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) { 146 intptr_t rv; 147 __asm__ volatile( 148 " casx [%2], %3, %0" 149 : "=r" (rv) 150 : "0" (exchange_value), "r" (dest), "r" (compare_value) 151 : "memory"); 152 return rv; 153 } 154 155 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) { 156 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value, order); 157 } 158 159 #endif // OS_CPU_LINUX_SPARC_VM_ATOMIC_LINUX_SPARC_INLINE_HPP