|
0
|
1 /*
|
|
|
2 * Copyright 1999-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
|
21 * have any questions.
|
|
|
22 *
|
|
|
23 */
|
|
|
24
|
|
|
25 // Implementation of class atomic
|
|
|
26
|
|
|
27 inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; }
|
|
|
28 inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; }
|
|
|
29 inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; }
|
|
|
30 inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; }
|
|
|
31 inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; }
|
|
|
32
|
|
|
33 inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; }
|
|
|
34 inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; }
|
|
|
35 inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; }
|
|
|
36 inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; }
|
|
|
37 inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; }
|
|
|
38
|
|
|
39
|
|
|
40 // Adding a lock prefix to an instruction on MP machine
|
|
|
41 #define LOCK_IF_MP(mp) "cmp $0, " #mp "; je 1f; lock; 1: "
|
|
|
42
|
|
|
43 inline jint Atomic::add (jint add_value, volatile jint* dest) {
|
|
|
44 jint addend = add_value;
|
|
|
45 int mp = os::is_MP();
|
|
|
46 __asm__ volatile ( LOCK_IF_MP(%3) "xaddl %0,(%2)"
|
|
|
47 : "=r" (addend)
|
|
|
48 : "0" (addend), "r" (dest), "r" (mp)
|
|
|
49 : "cc", "memory");
|
|
|
50 return addend + add_value;
|
|
|
51 }
|
|
|
52
|
|
|
53 inline void Atomic::inc (volatile jint* dest) {
|
|
|
54 int mp = os::is_MP();
|
|
|
55 __asm__ volatile (LOCK_IF_MP(%1) "addl $1,(%0)" :
|
|
|
56 : "r" (dest), "r" (mp) : "cc", "memory");
|
|
|
57 }
|
|
|
58
|
|
|
59 inline void Atomic::inc_ptr(volatile void* dest) {
|
|
|
60 inc_ptr((volatile intptr_t*)dest);
|
|
|
61 }
|
|
|
62
|
|
|
63 inline void Atomic::dec (volatile jint* dest) {
|
|
|
64 int mp = os::is_MP();
|
|
|
65 __asm__ volatile (LOCK_IF_MP(%1) "subl $1,(%0)" :
|
|
|
66 : "r" (dest), "r" (mp) : "cc", "memory");
|
|
|
67 }
|
|
|
68
|
|
|
69 inline void Atomic::dec_ptr(volatile void* dest) {
|
|
|
70 dec_ptr((volatile intptr_t*)dest);
|
|
|
71 }
|
|
|
72
|
|
|
73 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
|
|
|
74 __asm__ volatile ( "xchgl (%2),%0"
|
|
|
75 : "=r" (exchange_value)
|
|
|
76 : "0" (exchange_value), "r" (dest)
|
|
|
77 : "memory");
|
|
|
78 return exchange_value;
|
|
|
79 }
|
|
|
80
|
|
|
81 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
|
|
|
82 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
|
|
|
83 }
|
|
|
84
|
|
|
85
|
|
|
86 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
|
|
|
87 int mp = os::is_MP();
|
|
|
88 __asm__ volatile (LOCK_IF_MP(%4) "cmpxchgl %1,(%3)"
|
|
|
89 : "=a" (exchange_value)
|
|
|
90 : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
|
|
|
91 : "cc", "memory");
|
|
|
92 return exchange_value;
|
|
|
93 }
|
|
|
94
|
|
|
95 extern "C" {
|
|
|
96 // defined in linux_x86.s
|
|
|
97 jlong _Atomic_cmpxchg_long(jlong, volatile jlong*, jlong, bool);
|
|
|
98 }
|
|
|
99
|
|
|
100 #ifdef AMD64
|
|
|
101 inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
|
|
|
102 inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
|
|
|
103
|
|
|
104 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
|
|
|
105 intptr_t addend = add_value;
|
|
|
106 bool mp = os::is_MP();
|
|
|
107 __asm__ __volatile__ (LOCK_IF_MP(%3) "xaddq %0,(%2)"
|
|
|
108 : "=r" (addend)
|
|
|
109 : "0" (addend), "r" (dest), "r" (mp)
|
|
|
110 : "cc", "memory");
|
|
|
111 return addend + add_value;
|
|
|
112 }
|
|
|
113
|
|
|
114 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
|
|
|
115 return (void*)add_ptr(add_value, (volatile intptr_t*)dest);
|
|
|
116 }
|
|
|
117
|
|
|
118 inline void Atomic::inc_ptr(volatile intptr_t* dest) {
|
|
|
119 bool mp = os::is_MP();
|
|
|
120 __asm__ __volatile__ (LOCK_IF_MP(%1) "addq $1,(%0)"
|
|
|
121 :
|
|
|
122 : "r" (dest), "r" (mp)
|
|
|
123 : "cc", "memory");
|
|
|
124 }
|
|
|
125
|
|
|
126 inline void Atomic::dec_ptr(volatile intptr_t* dest) {
|
|
|
127 bool mp = os::is_MP();
|
|
|
128 __asm__ __volatile__ (LOCK_IF_MP(%1) "subq $1,(%0)"
|
|
|
129 :
|
|
|
130 : "r" (dest), "r" (mp)
|
|
|
131 : "cc", "memory");
|
|
|
132 }
|
|
|
133
|
|
|
134 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
|
|
|
135 __asm__ __volatile__ ("xchgq (%2),%0"
|
|
|
136 : "=r" (exchange_value)
|
|
|
137 : "0" (exchange_value), "r" (dest)
|
|
|
138 : "memory");
|
|
|
139 return exchange_value;
|
|
|
140 }
|
|
|
141
|
|
|
142 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
|
|
|
143 bool mp = os::is_MP();
|
|
|
144 __asm__ __volatile__ (LOCK_IF_MP(%4) "cmpxchgq %1,(%3)"
|
|
|
145 : "=a" (exchange_value)
|
|
|
146 : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
|
|
|
147 : "cc", "memory");
|
|
|
148 return exchange_value;
|
|
|
149 }
|
|
|
150
|
|
|
151 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
|
|
|
152 return (intptr_t)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value);
|
|
|
153 }
|
|
|
154
|
|
|
155 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
|
|
|
156 return (void*)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value);
|
|
|
157 }
|
|
|
158
|
|
|
159 #else
|
|
|
160 //inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
|
|
|
161 //inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
|
|
|
162
|
|
|
163 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
|
|
|
164 return (intptr_t)Atomic::add((jint)add_value, (volatile jint*)dest);
|
|
|
165 }
|
|
|
166
|
|
|
167 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
|
|
|
168 return (void*)Atomic::add((jint)add_value, (volatile jint*)dest);
|
|
|
169 }
|
|
|
170
|
|
|
171
|
|
|
172 inline void Atomic::inc_ptr(volatile intptr_t* dest) {
|
|
|
173 inc((volatile jint*)dest);
|
|
|
174 }
|
|
|
175
|
|
|
176 inline void Atomic::dec_ptr(volatile intptr_t* dest) {
|
|
|
177 dec((volatile jint*)dest);
|
|
|
178 }
|
|
|
179
|
|
|
180 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
|
|
|
181 return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest);
|
|
|
182 }
|
|
|
183
|
|
|
184 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
|
|
|
185 return _Atomic_cmpxchg_long(exchange_value, dest, compare_value, os::is_MP());
|
|
|
186 }
|
|
|
187
|
|
|
188 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
|
|
|
189 return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
|
|
|
190 }
|
|
|
191
|
|
|
192 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
|
|
|
193 return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
|
|
|
194 }
|
|
|
195 #endif // AMD64
|
