1 /*
2 * Copyright (c) 1999, 2010, 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_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_INLINE_HPP
26 #define OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_INLINE_HPP
27
28 #include "orderAccess_solaris_sparc.inline.hpp"
29 #include "runtime/atomic.hpp"
30 #include "runtime/os.hpp"
31 #include "vm_version_sparc.hpp"
32
33 // Implementation of class atomic
34
35 inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; }
36 inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; }
37 inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; }
38 inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
39 inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; }
40 inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; }
41
42 inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; }
43 inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; }
44 inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; }
45 inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
46 inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; }
47 inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; }
48
49 inline void Atomic::inc (volatile jint* dest) { (void)add (1, dest); }
50 inline void Atomic::inc_ptr(volatile intptr_t* dest) { (void)add_ptr(1, dest); }
51 inline void Atomic::inc_ptr(volatile void* dest) { (void)add_ptr(1, dest); }
52
53 inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); }
54 inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); }
55 inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); }
56
57 inline jlong Atomic::load(volatile jlong* src) { return *src; }
58
59 #ifdef _GNU_SOURCE
60
61 inline jint Atomic::add (jint add_value, volatile jint* dest) {
62 intptr_t rv;
63 __asm__ volatile(
64 "1: \n\t"
65 " ld [%2], %%o2\n\t"
66 " add %1, %%o2, %%o3\n\t"
67 " cas [%2], %%o2, %%o3\n\t"
68 " cmp %%o2, %%o3\n\t"
69 " bne 1b\n\t"
70 " nop\n\t"
71 " add %1, %%o2, %0\n\t"
72 : "=r" (rv)
73 : "r" (add_value), "r" (dest)
74 : "memory", "o2", "o3");
75 return rv;
76 }
77
78 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
79 intptr_t rv;
80 #ifdef _LP64
81 __asm__ volatile(
82 "1: \n\t"
83 " ldx [%2], %%o2\n\t"
84 " add %0, %%o2, %%o3\n\t"
85 " casx [%2], %%o2, %%o3\n\t"
86 " cmp %%o2, %%o3\n\t"
87 " bne %%xcc, 1b\n\t"
88 " nop\n\t"
89 " add %0, %%o2, %0\n\t"
90 : "=r" (rv)
91 : "r" (add_value), "r" (dest)
92 : "memory", "o2", "o3");
93 #else //_LP64
94 __asm__ volatile(
95 "1: \n\t"
96 " ld [%2], %%o2\n\t"
97 " add %1, %%o2, %%o3\n\t"
98 " cas [%2], %%o2, %%o3\n\t"
99 " cmp %%o2, %%o3\n\t"
100 " bne 1b\n\t"
101 " nop\n\t"
102 " add %1, %%o2, %0\n\t"
103 : "=r" (rv)
104 : "r" (add_value), "r" (dest)
105 : "memory", "o2", "o3");
106 #endif // _LP64
107 return rv;
108 }
109
110 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
111 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest);
112 }
113
114
115 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
116 intptr_t rv = exchange_value;
117 __asm__ volatile(
118 " swap [%2],%1\n\t"
119 : "=r" (rv)
120 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest)
121 : "memory");
122 return rv;
123 }
124
125 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
126 intptr_t rv = exchange_value;
127 #ifdef _LP64
128 __asm__ volatile(
129 "1:\n\t"
130 " mov %1, %%o3\n\t"
131 " ldx [%2], %%o2\n\t"
132 " casx [%2], %%o2, %%o3\n\t"
133 " cmp %%o2, %%o3\n\t"
134 " bne %%xcc, 1b\n\t"
135 " nop\n\t"
136 " mov %%o2, %0\n\t"
137 : "=r" (rv)
138 : "r" (exchange_value), "r" (dest)
139 : "memory", "o2", "o3");
140 #else //_LP64
141 __asm__ volatile(
142 "swap [%2],%1\n\t"
143 : "=r" (rv)
144 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest)
145 : "memory");
146 #endif // _LP64
147 return rv;
148 }
149
150 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
151 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
152 }
153
154
155 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
156 jint rv;
157 __asm__ volatile(
158 " cas [%2], %3, %0"
159 : "=r" (rv)
160 : "0" (exchange_value), "r" (dest), "r" (compare_value)
161 : "memory");
162 return rv;
163 }
164
165 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
166 #ifdef _LP64
167 jlong rv;
168 __asm__ volatile(
169 " casx [%2], %3, %0"
170 : "=r" (rv)
171 : "0" (exchange_value), "r" (dest), "r" (compare_value)
172 : "memory");
173 return rv;
174 #else //_LP64
175 assert(VM_Version::v9_instructions_work(), "cas only supported on v9");
176 volatile jlong_accessor evl, cvl, rv;
177 evl.long_value = exchange_value;
178 cvl.long_value = compare_value;
179
180 __asm__ volatile(
181 " sllx %2, 32, %2\n\t"
182 " srl %3, 0, %3\n\t"
183 " or %2, %3, %2\n\t"
184 " sllx %5, 32, %5\n\t"
185 " srl %6, 0, %6\n\t"
186 " or %5, %6, %5\n\t"
187 " casx [%4], %5, %2\n\t"
188 " srl %2, 0, %1\n\t"
189 " srlx %2, 32, %0\n\t"
190 : "=r" (rv.words[0]), "=r" (rv.words[1])
191 : "r" (evl.words[0]), "r" (evl.words[1]), "r" (dest), "r" (cvl.words[0]), "r" (cvl.words[1])
192 : "memory");
193
194 return rv.long_value;
195 #endif //_LP64
196 }
197
198 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
199 intptr_t rv;
200 #ifdef _LP64
201 __asm__ volatile(
202 " casx [%2], %3, %0"
203 : "=r" (rv)
204 : "0" (exchange_value), "r" (dest), "r" (compare_value)
205 : "memory");
206 #else //_LP64
207 __asm__ volatile(
208 " cas [%2], %3, %0"
209 : "=r" (rv)
210 : "0" (exchange_value), "r" (dest), "r" (compare_value)
211 : "memory");
212 #endif // _LP64
213 return rv;
214 }
215
216 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
217 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value);
218 }
219
220 #else // _GNU_SOURCE
221
222 #if defined(COMPILER2) || defined(_LP64)
223
224 // This is the interface to the atomic instructions in solaris_sparc.il.
225 // It's very messy because we need to support v8 and these instructions
226 // are illegal there. When sparc v8 is dropped, we can drop out lots of
227 // this code. Also compiler2 does not support v8 so the conditional code
228 // omits the instruction set check.
229
230 extern "C" jint _Atomic_swap32(jint exchange_value, volatile jint* dest);
231 extern "C" intptr_t _Atomic_swap64(intptr_t exchange_value, volatile intptr_t* dest);
232
233 extern "C" jint _Atomic_cas32(jint exchange_value, volatile jint* dest, jint compare_value);
234 extern "C" intptr_t _Atomic_cas64(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value);
235 extern "C" jlong _Atomic_casl (jlong exchange_value, volatile jlong* dest, jlong compare_value);
236
237 extern "C" jint _Atomic_add32(jint inc, volatile jint* dest);
238 extern "C" intptr_t _Atomic_add64(intptr_t add_value, volatile intptr_t* dest);
239
240
241 inline jint Atomic::add (jint add_value, volatile jint* dest) {
242 return _Atomic_add32(add_value, dest);
243 }
244
245 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
246 #ifdef _LP64
247 return _Atomic_add64(add_value, dest);
248 #else //_LP64
249 return _Atomic_add32(add_value, dest);
250 #endif // _LP64
251 }
252
253 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
254 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest);
255 }
256
257
258 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
259 return _Atomic_swap32(exchange_value, dest);
260 }
261
262 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
263 #ifdef _LP64
264 return _Atomic_swap64(exchange_value, dest);
265 #else // _LP64
266 return _Atomic_swap32(exchange_value, dest);
267 #endif // _LP64
268 }
269
270 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
271 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
272 }
273
274
275 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
276 return _Atomic_cas32(exchange_value, dest, compare_value);
277 }
278
279 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
280 #ifdef _LP64
281 // Return 64 bit value in %o0
282 return _Atomic_cas64((intptr_t)exchange_value, (intptr_t *)dest, (intptr_t)compare_value);
283 #else // _LP64
284 assert (VM_Version::v9_instructions_work(), "only supported on v9");
285 // Return 64 bit value in %o0,%o1 by hand
286 return _Atomic_casl(exchange_value, dest, compare_value);
287 #endif // _LP64
288 }
289
290 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
291 #ifdef _LP64
292 return _Atomic_cas64(exchange_value, dest, compare_value);
293 #else // _LP64
294 return _Atomic_cas32(exchange_value, dest, compare_value);
295 #endif // _LP64
296 }
297
298 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
299 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value);
300 }
301
302
303 #else // _LP64 || COMPILER2
304
305
306 // 32-bit compiler1 only
307
308 inline jint Atomic::add (jint add_value, volatile jint* dest) {
309 return (*os::atomic_add_func)(add_value, dest);
310 }
311
312 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
313 return (intptr_t)add((jint)add_value, (volatile jint*)dest);
314 }
315
316 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
317 return (void*)add((jint)add_value, (volatile jint*)dest);
318 }
319
320
321 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
322 return (*os::atomic_xchg_func)(exchange_value, dest);
323 }
324
325 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
326 return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest);
327 }
328
329 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
330 return (void*)xchg((jint)exchange_value, (volatile jint*)dest);
331 }
332
333
334 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
335 return (*os::atomic_cmpxchg_func)(exchange_value, dest, compare_value);
336 }
337
338 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
339 return (*os::atomic_cmpxchg_long_func)(exchange_value, dest, compare_value);
340 }
341
342 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
343 return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
344 }
345
346 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
347 return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
348 }
349
350 #endif // _LP64 || COMPILER2
351
352 #endif // _GNU_SOURCE
353
354 #endif // OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_INLINE_HPP