1 /*
2 * Copyright (c) 1999, 2011, 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_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; }
39 inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; }
40
41 inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; }
42 inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; }
43 inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; }
44 inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; }
45 inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; }
46
47 inline void Atomic::inc (volatile jint* dest) { (void)add (1, dest); }
48 inline void Atomic::inc_ptr(volatile intptr_t* dest) { (void)add_ptr(1, dest); }
49 inline void Atomic::inc_ptr(volatile void* dest) { (void)add_ptr(1, dest); }
50
51 inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); }
52 inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); }
53 inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); }
54
55
56 #ifdef _LP64
57
58 inline void Atomic::store(jlong store_value, jlong* dest) { *dest = store_value; }
59 inline void Atomic::store(jlong store_value, volatile jlong* dest) { *dest = store_value; }
60 inline jlong Atomic::load(volatile jlong* src) { return *src; }
61
62 #else
63
64 extern "C" void _Atomic_move_long_v8(volatile jlong* src, volatile jlong* dst);
65 extern "C" void _Atomic_move_long_v9(volatile jlong* src, volatile jlong* dst);
66
67 inline void Atomic_move_long(volatile jlong* src, volatile jlong* dst) {
68 #ifdef COMPILER2
69 // Compiler2 does not support v8, it is used only for v9.
70 _Atomic_move_long_v9(src, dst);
71 #else
72 // The branch is cheaper then emulated LDD.
73 if (VM_Version::v9_instructions_work()) {
74 _Atomic_move_long_v9(src, dst);
75 } else {
76 _Atomic_move_long_v8(src, dst);
77 }
78 #endif
79 }
80
81 inline jlong Atomic::load(volatile jlong* src) {
82 volatile jlong dest;
83 Atomic_move_long(src, &dest);
84 return dest;
85 }
86
87 inline void Atomic::store(jlong store_value, jlong* dest) {
88 Atomic_move_long((volatile jlong*)&store_value, (volatile jlong*)dest);
89 }
90
91 inline void Atomic::store(jlong store_value, volatile jlong* dest) {
92 Atomic_move_long((volatile jlong*)&store_value, dest);
93 }
94
95 #endif
96
97 #ifdef _GNU_SOURCE
98
99 inline jint Atomic::add (jint add_value, volatile jint* dest) {
100 intptr_t rv;
101 __asm__ volatile(
102 "1: \n\t"
103 " ld [%2], %%o2\n\t"
104 " add %1, %%o2, %%o3\n\t"
105 " cas [%2], %%o2, %%o3\n\t"
106 " cmp %%o2, %%o3\n\t"
107 " bne 1b\n\t"
108 " nop\n\t"
109 " add %1, %%o2, %0\n\t"
110 : "=r" (rv)
111 : "r" (add_value), "r" (dest)
112 : "memory", "o2", "o3");
113 return rv;
114 }
115
116 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
117 intptr_t rv;
118 #ifdef _LP64
119 __asm__ volatile(
120 "1: \n\t"
121 " ldx [%2], %%o2\n\t"
122 " add %0, %%o2, %%o3\n\t"
123 " casx [%2], %%o2, %%o3\n\t"
124 " cmp %%o2, %%o3\n\t"
125 " bne %%xcc, 1b\n\t"
126 " nop\n\t"
127 " add %0, %%o2, %0\n\t"
128 : "=r" (rv)
129 : "r" (add_value), "r" (dest)
130 : "memory", "o2", "o3");
131 #else //_LP64
132 __asm__ volatile(
133 "1: \n\t"
134 " ld [%2], %%o2\n\t"
135 " add %1, %%o2, %%o3\n\t"
136 " cas [%2], %%o2, %%o3\n\t"
137 " cmp %%o2, %%o3\n\t"
138 " bne 1b\n\t"
139 " nop\n\t"
140 " add %1, %%o2, %0\n\t"
141 : "=r" (rv)
142 : "r" (add_value), "r" (dest)
143 : "memory", "o2", "o3");
144 #endif // _LP64
145 return rv;
146 }
147
148 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
149 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest);
150 }
151
152
153 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
154 intptr_t rv = exchange_value;
155 __asm__ volatile(
156 " swap [%2],%1\n\t"
157 : "=r" (rv)
158 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest)
159 : "memory");
160 return rv;
161 }
162
163 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
164 intptr_t rv = exchange_value;
165 #ifdef _LP64
166 __asm__ volatile(
167 "1:\n\t"
168 " mov %1, %%o3\n\t"
169 " ldx [%2], %%o2\n\t"
170 " casx [%2], %%o2, %%o3\n\t"
171 " cmp %%o2, %%o3\n\t"
172 " bne %%xcc, 1b\n\t"
173 " nop\n\t"
174 " mov %%o2, %0\n\t"
175 : "=r" (rv)
176 : "r" (exchange_value), "r" (dest)
177 : "memory", "o2", "o3");
178 #else //_LP64
179 __asm__ volatile(
180 "swap [%2],%1\n\t"
181 : "=r" (rv)
182 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest)
183 : "memory");
184 #endif // _LP64
185 return rv;
186 }
187
188 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
189 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
190 }
191
192
193 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
194 jint rv;
195 __asm__ volatile(
196 " cas [%2], %3, %0"
197 : "=r" (rv)
198 : "0" (exchange_value), "r" (dest), "r" (compare_value)
199 : "memory");
200 return rv;
201 }
202
203 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
204 #ifdef _LP64
205 jlong rv;
206 __asm__ volatile(
207 " casx [%2], %3, %0"
208 : "=r" (rv)
209 : "0" (exchange_value), "r" (dest), "r" (compare_value)
210 : "memory");
211 return rv;
212 #else //_LP64
213 assert(VM_Version::v9_instructions_work(), "cas only supported on v9");
214 volatile jlong_accessor evl, cvl, rv;
215 evl.long_value = exchange_value;
216 cvl.long_value = compare_value;
217
218 __asm__ volatile(
219 " sllx %2, 32, %2\n\t"
220 " srl %3, 0, %3\n\t"
221 " or %2, %3, %2\n\t"
222 " sllx %5, 32, %5\n\t"
223 " srl %6, 0, %6\n\t"
224 " or %5, %6, %5\n\t"
225 " casx [%4], %5, %2\n\t"
226 " srl %2, 0, %1\n\t"
227 " srlx %2, 32, %0\n\t"
228 : "=r" (rv.words[0]), "=r" (rv.words[1])
229 : "r" (evl.words[0]), "r" (evl.words[1]), "r" (dest), "r" (cvl.words[0]), "r" (cvl.words[1])
230 : "memory");
231
232 return rv.long_value;
233 #endif //_LP64
234 }
235
236 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
237 intptr_t rv;
238 #ifdef _LP64
239 __asm__ volatile(
240 " casx [%2], %3, %0"
241 : "=r" (rv)
242 : "0" (exchange_value), "r" (dest), "r" (compare_value)
243 : "memory");
244 #else //_LP64
245 __asm__ volatile(
246 " cas [%2], %3, %0"
247 : "=r" (rv)
248 : "0" (exchange_value), "r" (dest), "r" (compare_value)
249 : "memory");
250 #endif // _LP64
251 return rv;
252 }
253
254 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
255 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value);
256 }
257
258 #else // _GNU_SOURCE
259
260 #if defined(COMPILER2) || defined(_LP64)
261
262 // This is the interface to the atomic instructions in solaris_sparc.il.
263 // It's very messy because we need to support v8 and these instructions
264 // are illegal there. When sparc v8 is dropped, we can drop out lots of
265 // this code. Also compiler2 does not support v8 so the conditional code
266 // omits the instruction set check.
267
268 extern "C" jint _Atomic_swap32(jint exchange_value, volatile jint* dest);
269 extern "C" intptr_t _Atomic_swap64(intptr_t exchange_value, volatile intptr_t* dest);
270
271 extern "C" jint _Atomic_cas32(jint exchange_value, volatile jint* dest, jint compare_value);
272 extern "C" intptr_t _Atomic_cas64(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value);
273 extern "C" jlong _Atomic_casl (jlong exchange_value, volatile jlong* dest, jlong compare_value);
274
275 extern "C" jint _Atomic_add32(jint inc, volatile jint* dest);
276 extern "C" intptr_t _Atomic_add64(intptr_t add_value, volatile intptr_t* dest);
277
278
279 inline jint Atomic::add (jint add_value, volatile jint* dest) {
280 return _Atomic_add32(add_value, dest);
281 }
282
283 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
284 #ifdef _LP64
285 return _Atomic_add64(add_value, dest);
286 #else //_LP64
287 return _Atomic_add32(add_value, dest);
288 #endif // _LP64
289 }
290
291 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
292 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest);
293 }
294
295
296 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
297 return _Atomic_swap32(exchange_value, dest);
298 }
299
300 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
301 #ifdef _LP64
302 return _Atomic_swap64(exchange_value, dest);
303 #else // _LP64
304 return _Atomic_swap32(exchange_value, dest);
305 #endif // _LP64
306 }
307
308 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
309 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
310 }
311
312
313 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
314 return _Atomic_cas32(exchange_value, dest, compare_value);
315 }
316
317 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
318 #ifdef _LP64
319 // Return 64 bit value in %o0
320 return _Atomic_cas64((intptr_t)exchange_value, (intptr_t *)dest, (intptr_t)compare_value);
321 #else // _LP64
322 assert (VM_Version::v9_instructions_work(), "only supported on v9");
323 // Return 64 bit value in %o0,%o1 by hand
324 return _Atomic_casl(exchange_value, dest, compare_value);
325 #endif // _LP64
326 }
327
328 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
329 #ifdef _LP64
330 return _Atomic_cas64(exchange_value, dest, compare_value);
331 #else // _LP64
332 return _Atomic_cas32(exchange_value, dest, compare_value);
333 #endif // _LP64
334 }
335
336 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
337 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value);
338 }
339
340
341 #else // _LP64 || COMPILER2
342
343
344 // 32-bit compiler1 only
345
346 inline jint Atomic::add (jint add_value, volatile jint* dest) {
347 return (*os::atomic_add_func)(add_value, dest);
348 }
349
350 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
351 return (intptr_t)add((jint)add_value, (volatile jint*)dest);
352 }
353
354 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
355 return (void*)add((jint)add_value, (volatile jint*)dest);
356 }
357
358
359 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
360 return (*os::atomic_xchg_func)(exchange_value, dest);
361 }
362
363 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
364 return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest);
365 }
366
367 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
368 return (void*)xchg((jint)exchange_value, (volatile jint*)dest);
369 }
370
371
372 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
373 return (*os::atomic_cmpxchg_func)(exchange_value, dest, compare_value);
374 }
375
376 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
377 return (*os::atomic_cmpxchg_long_func)(exchange_value, dest, compare_value);
378 }
379
380 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
381 return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
382 }
383
384 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
385 return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
386 }
387
388 #endif // _LP64 || COMPILER2
389
390 #endif // _GNU_SOURCE
391
392 #endif // OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_INLINE_HPP