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annotate src/os_cpu/solaris_x86/vm/atomic_solaris_x86.inline.hpp @ 10121:6c560f9ebb3e
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date | Wed, 17 Apr 2013 10:12:42 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef OS_CPU_SOLARIS_X86_VM_ATOMIC_SOLARIS_X86_INLINE_HPP |
26 #define OS_CPU_SOLARIS_X86_VM_ATOMIC_SOLARIS_X86_INLINE_HPP | |
27 | |
28 #include "runtime/atomic.hpp" | |
29 #include "runtime/os.hpp" | |
30 #include "vm_version_x86.hpp" | |
31 | |
0 | 32 inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; } |
33 inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; } | |
34 inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; } | |
35 | |
36 | |
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 // For Sun Studio - implementation is in solaris_x86_[32/64].il. | |
55 // For gcc - implementation is just below. | |
56 | |
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57 // The lock prefix can be omitted for certain instructions on uniprocessors; to |
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58 // facilitate this, os::is_MP() is passed as an additional argument. 64-bit |
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59 // processors are assumed to be multi-threaded and/or multi-core, so the extra |
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60 // argument is unnecessary. |
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61 #ifndef _LP64 |
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62 #define IS_MP_DECL() , int is_mp |
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63 #define IS_MP_ARG() , (int) os::is_MP() |
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64 #else |
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65 #define IS_MP_DECL() |
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66 #define IS_MP_ARG() |
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67 #endif // _LP64 |
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68 |
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69 extern "C" { |
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70 jint _Atomic_add(jint add_value, volatile jint* dest IS_MP_DECL()); |
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71 jint _Atomic_xchg(jint exchange_value, volatile jint* dest); |
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72 jint _Atomic_cmpxchg(jint exchange_value, volatile jint* dest, |
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73 jint compare_value IS_MP_DECL()); |
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74 jlong _Atomic_cmpxchg_long(jlong exchange_value, volatile jlong* dest, |
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75 jlong compare_value IS_MP_DECL()); |
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76 } |
0 | 77 |
78 inline jint Atomic::add (jint add_value, volatile jint* dest) { | |
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79 return _Atomic_add(add_value, dest IS_MP_ARG()); |
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80 } |
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81 |
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82 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { |
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83 return _Atomic_xchg(exchange_value, dest); |
0 | 84 } |
85 | |
86 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { | |
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87 return _Atomic_cmpxchg(exchange_value, dest, compare_value IS_MP_ARG()); |
0 | 88 } |
89 | |
90 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { | |
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91 return _Atomic_cmpxchg_long(exchange_value, dest, compare_value IS_MP_ARG()); |
0 | 92 } |
93 | |
94 | |
95 #ifdef AMD64 | |
96 inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; } | |
97 inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; } | |
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98 extern "C" jlong _Atomic_add_long(jlong add_value, volatile jlong* dest); |
0 | 99 extern "C" jlong _Atomic_xchg_long(jlong exchange_value, volatile jlong* dest); |
100 | |
101 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { | |
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102 return (intptr_t)_Atomic_add_long((jlong)add_value, (volatile jlong*)dest); |
0 | 103 } |
104 | |
105 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { | |
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106 return (void*)_Atomic_add_long((jlong)add_value, (volatile jlong*)dest); |
0 | 107 } |
108 | |
109 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { | |
110 return (intptr_t)_Atomic_xchg_long((jlong)exchange_value, (volatile jlong*)dest); | |
111 } | |
112 | |
113 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { | |
114 return (void*)_Atomic_xchg_long((jlong)exchange_value, (volatile jlong*)dest); | |
115 } | |
116 | |
117 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { | |
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118 return (intptr_t)_Atomic_cmpxchg_long((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value); |
0 | 119 } |
120 | |
121 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { | |
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122 return (void*)_Atomic_cmpxchg_long((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value); |
0 | 123 } |
124 | |
894 | 125 inline jlong Atomic::load(volatile jlong* src) { return *src; } |
126 | |
0 | 127 #else // !AMD64 |
128 | |
129 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { | |
130 return (intptr_t)add((jint)add_value, (volatile jint*)dest); | |
131 } | |
132 | |
133 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { | |
134 return (void*)add((jint)add_value, (volatile jint*)dest); | |
135 } | |
136 | |
137 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { | |
138 return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest); | |
139 } | |
140 | |
141 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { | |
142 return (void*)xchg((jint)exchange_value, (volatile jint*)dest); | |
143 } | |
144 | |
145 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { | |
146 return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); | |
147 } | |
148 | |
149 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { | |
150 return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); | |
151 } | |
894 | 152 |
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153 extern "C" void _Atomic_move_long(volatile jlong* src, volatile jlong* dst); |
894 | 154 |
155 inline jlong Atomic::load(volatile jlong* src) { | |
156 volatile jlong dest; | |
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157 _Atomic_move_long(src, &dest); |
894 | 158 return dest; |
159 } | |
160 | |
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161 inline void Atomic::store(jlong store_value, jlong* dest) { |
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162 _Atomic_move_long((volatile jlong*)&store_value, (volatile jlong*)dest); |
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163 } |
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164 |
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165 inline void Atomic::store(jlong store_value, volatile jlong* dest) { |
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166 _Atomic_move_long((volatile jlong*)&store_value, dest); |
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167 } |
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168 |
0 | 169 #endif // AMD64 |
170 | |
171 #ifdef _GNU_SOURCE | |
172 // Add a lock prefix to an instruction on an MP machine | |
173 #define LOCK_IF_MP(mp) "cmp $0, " #mp "; je 1f; lock; 1: " | |
174 | |
175 extern "C" { | |
176 inline jint _Atomic_add(jint add_value, volatile jint* dest, int mp) { | |
177 jint addend = add_value; | |
178 __asm__ volatile ( LOCK_IF_MP(%3) "xaddl %0,(%2)" | |
179 : "=r" (addend) | |
180 : "0" (addend), "r" (dest), "r" (mp) | |
181 : "cc", "memory"); | |
182 return addend + add_value; | |
183 } | |
184 | |
185 #ifdef AMD64 | |
186 inline jlong _Atomic_add_long(jlong add_value, volatile jlong* dest, int mp) { | |
187 intptr_t addend = add_value; | |
188 __asm__ __volatile__ (LOCK_IF_MP(%3) "xaddq %0,(%2)" | |
189 : "=r" (addend) | |
190 : "0" (addend), "r" (dest), "r" (mp) | |
191 : "cc", "memory"); | |
192 return addend + add_value; | |
193 } | |
194 | |
195 inline jlong _Atomic_xchg_long(jlong exchange_value, volatile jlong* dest) { | |
196 __asm__ __volatile__ ("xchgq (%2),%0" | |
197 : "=r" (exchange_value) | |
198 : "0" (exchange_value), "r" (dest) | |
199 : "memory"); | |
200 return exchange_value; | |
201 } | |
202 | |
203 #endif // AMD64 | |
204 | |
205 inline jint _Atomic_xchg(jint exchange_value, volatile jint* dest) { | |
206 __asm__ __volatile__ ("xchgl (%2),%0" | |
207 : "=r" (exchange_value) | |
208 : "0" (exchange_value), "r" (dest) | |
209 : "memory"); | |
210 return exchange_value; | |
211 } | |
212 | |
213 inline jint _Atomic_cmpxchg(jint exchange_value, volatile jint* dest, jint compare_value, int mp) { | |
214 __asm__ volatile (LOCK_IF_MP(%4) "cmpxchgl %1,(%3)" | |
215 : "=a" (exchange_value) | |
216 : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp) | |
217 : "cc", "memory"); | |
218 return exchange_value; | |
219 } | |
220 | |
221 // This is the interface to the atomic instruction in solaris_i486.s. | |
222 jlong _Atomic_cmpxchg_long_gcc(jlong exchange_value, volatile jlong* dest, jlong compare_value, int mp); | |
223 | |
224 inline jlong _Atomic_cmpxchg_long(jlong exchange_value, volatile jlong* dest, jlong compare_value, int mp) { | |
225 #ifdef AMD64 | |
226 __asm__ __volatile__ (LOCK_IF_MP(%4) "cmpxchgq %1,(%3)" | |
227 : "=a" (exchange_value) | |
228 : "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp) | |
229 : "cc", "memory"); | |
230 return exchange_value; | |
231 #else | |
232 return _Atomic_cmpxchg_long_gcc(exchange_value, dest, compare_value, os::is_MP()); | |
233 | |
234 #if 0 | |
235 // The code below does not work presumably because of the bug in gcc | |
236 // The error message says: | |
237 // can't find a register in class BREG while reloading asm | |
238 // However I want to save this code and later replace _Atomic_cmpxchg_long_gcc | |
239 // with such inline asm code: | |
240 | |
241 volatile jlong_accessor evl, cvl, rv; | |
242 evl.long_value = exchange_value; | |
243 cvl.long_value = compare_value; | |
244 int mp = os::is_MP(); | |
245 | |
246 __asm__ volatile ("cmp $0, %%esi\n\t" | |
247 "je 1f \n\t" | |
248 "lock\n\t" | |
249 "1: cmpxchg8b (%%edi)\n\t" | |
250 : "=a"(cvl.words[0]), "=d"(cvl.words[1]) | |
251 : "a"(cvl.words[0]), "d"(cvl.words[1]), | |
252 "b"(evl.words[0]), "c"(evl.words[1]), | |
253 "D"(dest), "S"(mp) | |
254 : "cc", "memory"); | |
255 return cvl.long_value; | |
256 #endif // if 0 | |
257 #endif // AMD64 | |
258 } | |
259 } | |
260 #undef LOCK_IF_MP | |
261 | |
262 #endif // _GNU_SOURCE | |
1972 | 263 |
264 #endif // OS_CPU_SOLARIS_X86_VM_ATOMIC_SOLARIS_X86_INLINE_HPP |