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comparison src/os_cpu/solaris_x86/vm/atomic_solaris_x86.inline.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 665be97e8704 |
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1 /* | |
2 * Copyright 1999-2007 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 inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; } | |
26 inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; } | |
27 inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; } | |
28 | |
29 | |
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 inline void Atomic::inc (volatile jint* dest) { (void)add (1, dest); } | |
40 inline void Atomic::inc_ptr(volatile intptr_t* dest) { (void)add_ptr(1, dest); } | |
41 inline void Atomic::inc_ptr(volatile void* dest) { (void)add_ptr(1, dest); } | |
42 | |
43 inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); } | |
44 inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); } | |
45 inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); } | |
46 | |
47 // For Sun Studio - implementation is in solaris_x86_[32/64].il. | |
48 // For gcc - implementation is just below. | |
49 | |
50 extern "C" jint _Atomic_add(jint add_value, volatile jint* dest, int mp); | |
51 extern "C" jint _Atomic_xchg(jint exchange_value, volatile jint* dest); | |
52 extern "C" jint _Atomic_cmpxchg(jint exchange_value, volatile jint* dest, jint compare_value, int mp); | |
53 extern "C" jlong _Atomic_cmpxchg_long(jlong exchange_value, volatile jlong* dest, jlong compare_value, int mp); | |
54 | |
55 inline jint Atomic::add (jint add_value, volatile jint* dest) { | |
56 return _Atomic_add(add_value, dest, (int) os::is_MP()); | |
57 } | |
58 | |
59 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { | |
60 return _Atomic_cmpxchg(exchange_value, dest, compare_value, (int) os::is_MP()); | |
61 } | |
62 | |
63 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { | |
64 return _Atomic_cmpxchg_long(exchange_value, dest, compare_value, (int) os::is_MP()); | |
65 } | |
66 | |
67 | |
68 #ifdef AMD64 | |
69 inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; } | |
70 inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; } | |
71 extern "C" jlong _Atomic_add_long(jlong add_value, volatile jlong* dest, int mp); | |
72 extern "C" jlong _Atomic_xchg_long(jlong exchange_value, volatile jlong* dest); | |
73 | |
74 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { | |
75 return (intptr_t)_Atomic_add_long((jlong)add_value, (volatile jlong*)dest, (int) os::is_MP()); | |
76 } | |
77 | |
78 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { | |
79 return (void*)_Atomic_add_long((jlong)add_value, (volatile jlong*)dest, (int) os::is_MP()); | |
80 } | |
81 | |
82 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { | |
83 return _Atomic_xchg(exchange_value, dest); | |
84 } | |
85 | |
86 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { | |
87 return (intptr_t)_Atomic_xchg_long((jlong)exchange_value, (volatile jlong*)dest); | |
88 } | |
89 | |
90 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { | |
91 return (void*)_Atomic_xchg_long((jlong)exchange_value, (volatile jlong*)dest); | |
92 } | |
93 | |
94 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { | |
95 return (intptr_t)_Atomic_cmpxchg_long((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value, (int) os::is_MP()); | |
96 } | |
97 | |
98 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { | |
99 return (void*)_Atomic_cmpxchg_long((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value, (int) os::is_MP()); | |
100 } | |
101 | |
102 #else // !AMD64 | |
103 | |
104 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { | |
105 return (intptr_t)add((jint)add_value, (volatile jint*)dest); | |
106 } | |
107 | |
108 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { | |
109 return (void*)add((jint)add_value, (volatile jint*)dest); | |
110 } | |
111 | |
112 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { | |
113 // We noticed a CC5.5 bug (4894807), so keep calling the stub just to be safe. | |
114 // Will use the inline template version after 4894807 is fixed. | |
115 // return _Atomic_xchg(exchange_value, dest); | |
116 return (*os::atomic_xchg_func)(exchange_value, dest); | |
117 } | |
118 | |
119 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { | |
120 return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest); | |
121 } | |
122 | |
123 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { | |
124 return (void*)xchg((jint)exchange_value, (volatile jint*)dest); | |
125 } | |
126 | |
127 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { | |
128 return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); | |
129 } | |
130 | |
131 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { | |
132 return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); | |
133 } | |
134 #endif // AMD64 | |
135 | |
136 #ifdef _GNU_SOURCE | |
137 // Add a lock prefix to an instruction on an MP machine | |
138 #define LOCK_IF_MP(mp) "cmp $0, " #mp "; je 1f; lock; 1: " | |
139 | |
140 extern "C" { | |
141 inline jint _Atomic_add(jint add_value, volatile jint* dest, int mp) { | |
142 jint addend = add_value; | |
143 __asm__ volatile ( LOCK_IF_MP(%3) "xaddl %0,(%2)" | |
144 : "=r" (addend) | |
145 : "0" (addend), "r" (dest), "r" (mp) | |
146 : "cc", "memory"); | |
147 return addend + add_value; | |
148 } | |
149 | |
150 #ifdef AMD64 | |
151 inline jlong _Atomic_add_long(jlong add_value, volatile jlong* dest, int mp) { | |
152 intptr_t addend = add_value; | |
153 __asm__ __volatile__ (LOCK_IF_MP(%3) "xaddq %0,(%2)" | |
154 : "=r" (addend) | |
155 : "0" (addend), "r" (dest), "r" (mp) | |
156 : "cc", "memory"); | |
157 return addend + add_value; | |
158 } | |
159 | |
160 inline jlong _Atomic_xchg_long(jlong exchange_value, volatile jlong* dest) { | |
161 __asm__ __volatile__ ("xchgq (%2),%0" | |
162 : "=r" (exchange_value) | |
163 : "0" (exchange_value), "r" (dest) | |
164 : "memory"); | |
165 return exchange_value; | |
166 } | |
167 | |
168 #endif // AMD64 | |
169 | |
170 inline jint _Atomic_xchg(jint exchange_value, volatile jint* dest) { | |
171 | |
172 // 32bit version originally did nothing!! | |
173 | |
174 __asm__ __volatile__ ("xchgl (%2),%0" | |
175 : "=r" (exchange_value) | |
176 : "0" (exchange_value), "r" (dest) | |
177 : "memory"); | |
178 return exchange_value; | |
179 } | |
180 | |
181 inline jint _Atomic_cmpxchg(jint exchange_value, volatile jint* dest, jint compare_value, int mp) { | |
182 __asm__ volatile (LOCK_IF_MP(%4) "cmpxchgl %1,(%3)" | |
183 : "=a" (exchange_value) | |
184 : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp) | |
185 : "cc", "memory"); | |
186 return exchange_value; | |
187 } | |
188 | |
189 // This is the interface to the atomic instruction in solaris_i486.s. | |
190 jlong _Atomic_cmpxchg_long_gcc(jlong exchange_value, volatile jlong* dest, jlong compare_value, int mp); | |
191 | |
192 inline jlong _Atomic_cmpxchg_long(jlong exchange_value, volatile jlong* dest, jlong compare_value, int mp) { | |
193 #ifdef AMD64 | |
194 __asm__ __volatile__ (LOCK_IF_MP(%4) "cmpxchgq %1,(%3)" | |
195 : "=a" (exchange_value) | |
196 : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp) | |
197 : "cc", "memory"); | |
198 return exchange_value; | |
199 #else | |
200 return _Atomic_cmpxchg_long_gcc(exchange_value, dest, compare_value, os::is_MP()); | |
201 | |
202 #if 0 | |
203 // The code below does not work presumably because of the bug in gcc | |
204 // The error message says: | |
205 // can't find a register in class BREG while reloading asm | |
206 // However I want to save this code and later replace _Atomic_cmpxchg_long_gcc | |
207 // with such inline asm code: | |
208 | |
209 volatile jlong_accessor evl, cvl, rv; | |
210 evl.long_value = exchange_value; | |
211 cvl.long_value = compare_value; | |
212 int mp = os::is_MP(); | |
213 | |
214 __asm__ volatile ("cmp $0, %%esi\n\t" | |
215 "je 1f \n\t" | |
216 "lock\n\t" | |
217 "1: cmpxchg8b (%%edi)\n\t" | |
218 : "=a"(cvl.words[0]), "=d"(cvl.words[1]) | |
219 : "a"(cvl.words[0]), "d"(cvl.words[1]), | |
220 "b"(evl.words[0]), "c"(evl.words[1]), | |
221 "D"(dest), "S"(mp) | |
222 : "cc", "memory"); | |
223 return cvl.long_value; | |
224 #endif // if 0 | |
225 #endif // AMD64 | |
226 } | |
227 } | |
228 #undef LOCK_IF_MP | |
229 | |
230 #endif // _GNU_SOURCE |