1 /*
2 * Copyright (c) 1999, 2013, 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 "runtime/atomic.hpp"
29 #include "runtime/os.hpp"
30 #include "vm_version_sparc.hpp"
31
32 // Implementation of class atomic
33
34 inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; }
35 inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; }
36 inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; }
37 inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; }
38 inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; }
39
40 inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; }
41 inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; }
42 inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; }
43 inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; }
44 inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; }
45
46 inline void Atomic::inc (volatile jint* dest) { (void)add (1, dest); }
47 inline void Atomic::inc_ptr(volatile intptr_t* dest) { (void)add_ptr(1, dest); }
48 inline void Atomic::inc_ptr(volatile void* dest) { (void)add_ptr(1, dest); }
49
50 inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); }
51 inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); }
52 inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); }
53
54
55 #ifdef _LP64
56
57 inline void Atomic::store(jlong store_value, jlong* dest) { *dest = store_value; }
58 inline void Atomic::store(jlong store_value, volatile jlong* dest) { *dest = store_value; }
59 inline jlong Atomic::load(volatile jlong* src) { return *src; }
60
61 #else
62
63 extern "C" void _Atomic_move_long_v8(volatile jlong* src, volatile jlong* dst);
64 extern "C" void _Atomic_move_long_v9(volatile jlong* src, volatile jlong* dst);
65
66 inline void Atomic_move_long(volatile jlong* src, volatile jlong* dst) {
67 #ifdef COMPILER2
68 // Compiler2 does not support v8, it is used only for v9.
69 _Atomic_move_long_v9(src, dst);
70 #else
71 // The branch is cheaper then emulated LDD.
72 if (VM_Version::v9_instructions_work()) {
73 _Atomic_move_long_v9(src, dst);
74 } else {
75 _Atomic_move_long_v8(src, dst);
76 }
77 #endif
78 }
79
80 inline jlong Atomic::load(volatile jlong* src) {
81 volatile jlong dest;
82 Atomic_move_long(src, &dest);
83 return dest;
84 }
85
86 inline void Atomic::store(jlong store_value, jlong* dest) {
87 Atomic_move_long((volatile jlong*)&store_value, (volatile jlong*)dest);
88 }
89
90 inline void Atomic::store(jlong store_value, volatile jlong* dest) {
91 Atomic_move_long((volatile jlong*)&store_value, dest);
92 }
93
94 #endif
95
96 #ifdef _GNU_SOURCE
97
98 inline jint Atomic::add (jint add_value, volatile jint* dest) {
99 intptr_t rv;
100 __asm__ volatile(
101 "1: \n\t"
102 " ld [%2], %%o2\n\t"
103 " add %1, %%o2, %%o3\n\t"
104 " cas [%2], %%o2, %%o3\n\t"
105 " cmp %%o2, %%o3\n\t"
106 " bne 1b\n\t"
107 " nop\n\t"
108 " add %1, %%o2, %0\n\t"
109 : "=r" (rv)
110 : "r" (add_value), "r" (dest)
111 : "memory", "o2", "o3");
112 return rv;
113 }
114
115 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
116 intptr_t rv;
117 #ifdef _LP64
118 __asm__ volatile(
119 "1: \n\t"
120 " ldx [%2], %%o2\n\t"
121 " add %0, %%o2, %%o3\n\t"
122 " casx [%2], %%o2, %%o3\n\t"
123 " cmp %%o2, %%o3\n\t"
124 " bne %%xcc, 1b\n\t"
125 " nop\n\t"
126 " add %0, %%o2, %0\n\t"
127 : "=r" (rv)
128 : "r" (add_value), "r" (dest)
129 : "memory", "o2", "o3");
130 #else //_LP64
131 __asm__ volatile(
132 "1: \n\t"
133 " ld [%2], %%o2\n\t"
134 " add %1, %%o2, %%o3\n\t"
135 " cas [%2], %%o2, %%o3\n\t"
136 " cmp %%o2, %%o3\n\t"
137 " bne 1b\n\t"
138 " nop\n\t"
139 " add %1, %%o2, %0\n\t"
140 : "=r" (rv)
141 : "r" (add_value), "r" (dest)
142 : "memory", "o2", "o3");
143 #endif // _LP64
144 return rv;
145 }
146
147 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
148 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest);
149 }
150
151
152 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
153 intptr_t rv = exchange_value;
154 __asm__ volatile(
155 " swap [%2],%1\n\t"
156 : "=r" (rv)
157 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest)
158 : "memory");
159 return rv;
160 }
161
162 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
163 intptr_t rv = exchange_value;
164 #ifdef _LP64
165 __asm__ volatile(
166 "1:\n\t"
167 " mov %1, %%o3\n\t"
168 " ldx [%2], %%o2\n\t"
169 " casx [%2], %%o2, %%o3\n\t"
170 " cmp %%o2, %%o3\n\t"
171 " bne %%xcc, 1b\n\t"
172 " nop\n\t"
173 " mov %%o2, %0\n\t"
174 : "=r" (rv)
175 : "r" (exchange_value), "r" (dest)
176 : "memory", "o2", "o3");
177 #else //_LP64
178 __asm__ volatile(
179 "swap [%2],%1\n\t"
180 : "=r" (rv)
181 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest)
182 : "memory");
183 #endif // _LP64
184 return rv;
185 }
186
187 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
188 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
189 }
190
191
192 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
193 jint rv;
194 __asm__ volatile(
195 " cas [%2], %3, %0"
196 : "=r" (rv)
197 : "0" (exchange_value), "r" (dest), "r" (compare_value)
198 : "memory");
199 return rv;
200 }
201
202 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
203 #ifdef _LP64
204 jlong rv;
205 __asm__ volatile(
206 " casx [%2], %3, %0"
207 : "=r" (rv)
208 : "0" (exchange_value), "r" (dest), "r" (compare_value)
209 : "memory");
210 return rv;
211 #else //_LP64
212 assert(VM_Version::v9_instructions_work(), "cas only supported on v9");
213 volatile jlong_accessor evl, cvl, rv;
214 evl.long_value = exchange_value;
215 cvl.long_value = compare_value;
216
217 __asm__ volatile(
218 " sllx %2, 32, %2\n\t"
219 " srl %3, 0, %3\n\t"
220 " or %2, %3, %2\n\t"
221 " sllx %5, 32, %5\n\t"
222 " srl %6, 0, %6\n\t"
223 " or %5, %6, %5\n\t"
224 " casx [%4], %5, %2\n\t"
225 " srl %2, 0, %1\n\t"
226 " srlx %2, 32, %0\n\t"
227 : "=r" (rv.words[0]), "=r" (rv.words[1])
228 : "r" (evl.words[0]), "r" (evl.words[1]), "r" (dest), "r" (cvl.words[0]), "r" (cvl.words[1])
229 : "memory");
230
231 return rv.long_value;
232 #endif //_LP64
233 }
234
235 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
236 intptr_t rv;
237 #ifdef _LP64
238 __asm__ volatile(
239 " casx [%2], %3, %0"
240 : "=r" (rv)
241 : "0" (exchange_value), "r" (dest), "r" (compare_value)
242 : "memory");
243 #else //_LP64
244 __asm__ volatile(
245 " cas [%2], %3, %0"
246 : "=r" (rv)
247 : "0" (exchange_value), "r" (dest), "r" (compare_value)
248 : "memory");
249 #endif // _LP64
250 return rv;
251 }
252
253 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
254 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value);
255 }
256
257 #else // _GNU_SOURCE
258
259 #if defined(COMPILER2) || defined(_LP64)
260
261 // This is the interface to the atomic instructions in solaris_sparc.il.
262 // It's very messy because we need to support v8 and these instructions
263 // are illegal there. When sparc v8 is dropped, we can drop out lots of
264 // this code. Also compiler2 does not support v8 so the conditional code
265 // omits the instruction set check.
266
267 extern "C" jint _Atomic_swap32(jint exchange_value, volatile jint* dest);
268 extern "C" intptr_t _Atomic_swap64(intptr_t exchange_value, volatile intptr_t* dest);
269
270 extern "C" jint _Atomic_cas32(jint exchange_value, volatile jint* dest, jint compare_value);
271 extern "C" intptr_t _Atomic_cas64(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value);
272 extern "C" jlong _Atomic_casl (jlong exchange_value, volatile jlong* dest, jlong compare_value);
273
274 extern "C" jint _Atomic_add32(jint inc, volatile jint* dest);
275 extern "C" intptr_t _Atomic_add64(intptr_t add_value, volatile intptr_t* dest);
276
277
278 inline jint Atomic::add (jint add_value, volatile jint* dest) {
279 return _Atomic_add32(add_value, dest);
280 }
281
282 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
283 #ifdef _LP64
284 return _Atomic_add64(add_value, dest);
285 #else //_LP64
286 return _Atomic_add32(add_value, dest);
287 #endif // _LP64
288 }
289
290 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
291 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest);
292 }
293
294
295 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
296 return _Atomic_swap32(exchange_value, dest);
297 }
298
299 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
300 #ifdef _LP64
301 return _Atomic_swap64(exchange_value, dest);
302 #else // _LP64
303 return _Atomic_swap32(exchange_value, dest);
304 #endif // _LP64
305 }
306
307 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
308 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
309 }
310
311
312 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
313 return _Atomic_cas32(exchange_value, dest, compare_value);
314 }
315
316 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
317 #ifdef _LP64
318 // Return 64 bit value in %o0
319 return _Atomic_cas64((intptr_t)exchange_value, (intptr_t *)dest, (intptr_t)compare_value);
320 #else // _LP64
321 assert (VM_Version::v9_instructions_work(), "only supported on v9");
322 // Return 64 bit value in %o0,%o1 by hand
323 return _Atomic_casl(exchange_value, dest, compare_value);
324 #endif // _LP64
325 }
326
327 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
328 #ifdef _LP64
329 return _Atomic_cas64(exchange_value, dest, compare_value);
330 #else // _LP64
331 return _Atomic_cas32(exchange_value, dest, compare_value);
332 #endif // _LP64
333 }
334
335 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
336 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value);
337 }
338
339
340 #else // _LP64 || COMPILER2
341
342
343 // 32-bit compiler1 only
344
345 inline jint Atomic::add (jint add_value, volatile jint* dest) {
346 return (*os::atomic_add_func)(add_value, dest);
347 }
348
349 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
350 return (intptr_t)add((jint)add_value, (volatile jint*)dest);
351 }
352
353 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
354 return (void*)add((jint)add_value, (volatile jint*)dest);
355 }
356
357
358 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
359 return (*os::atomic_xchg_func)(exchange_value, dest);
360 }
361
362 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
363 return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest);
364 }
365
366 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
367 return (void*)xchg((jint)exchange_value, (volatile jint*)dest);
368 }
369
370
371 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
372 return (*os::atomic_cmpxchg_func)(exchange_value, dest, compare_value);
373 }
374
375 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
376 return (*os::atomic_cmpxchg_long_func)(exchange_value, dest, compare_value);
377 }
378
379 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
380 return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
381 }
382
383 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
384 return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
385 }
386
387 #endif // _LP64 || COMPILER2
388
389 #endif // _GNU_SOURCE
390
391 #endif // OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_INLINE_HPP