Mercurial > hg > truffle
annotate src/os_cpu/windows_x86/vm/atomic_windows_x86.inline.hpp @ 12436:39308acea2f7
revert Unsafe.getObject hack to read uncompressed pointers
author | twisti |
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date | Tue, 15 Oct 2013 18:04:13 -0700 |
parents | 63e54c37ac64 |
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rev | line source |
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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_WINDOWS_X86_VM_ATOMIC_WINDOWS_X86_INLINE_HPP |
26 #define OS_CPU_WINDOWS_X86_VM_ATOMIC_WINDOWS_X86_INLINE_HPP | |
27 | |
28 #include "runtime/atomic.hpp" | |
29 #include "runtime/os.hpp" | |
30 #include "vm_version_x86.hpp" | |
31 | |
0 | 32 // The following alternative implementations are needed because |
33 // Windows 95 doesn't support (some of) the corresponding Windows NT | |
34 // calls. Furthermore, these versions allow inlining in the caller. | |
35 // (More precisely: The documentation for InterlockedExchange says | |
36 // it is supported for Windows 95. However, when single-stepping | |
37 // through the assembly code we cannot step into the routine and | |
38 // when looking at the routine address we see only garbage code. | |
39 // Better safe then sorry!). Was bug 7/31/98 (gri). | |
40 // | |
41 // Performance note: On uniprocessors, the 'lock' prefixes are not | |
42 // necessary (and expensive). We should generate separate cases if | |
43 // this becomes a performance problem. | |
44 | |
45 #pragma warning(disable: 4035) // Disables warnings reporting missing return statement | |
46 | |
47 inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; } | |
48 inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; } | |
49 inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; } | |
50 | |
51 inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; } | |
52 inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; } | |
53 | |
54 inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; } | |
55 inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; } | |
56 inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; } | |
57 | |
58 | |
59 inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; } | |
60 inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; } | |
61 | |
62 // Adding a lock prefix to an instruction on MP machine | |
63 // VC++ doesn't like the lock prefix to be on a single line | |
64 // so we can't insert a label after the lock prefix. | |
65 // By emitting a lock prefix, we can define a label after it. | |
66 #define LOCK_IF_MP(mp) __asm cmp mp, 0 \ | |
67 __asm je L0 \ | |
68 __asm _emit 0xF0 \ | |
69 __asm L0: | |
70 | |
71 #ifdef AMD64 | |
72 inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; } | |
73 inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; } | |
74 | |
75 inline jint Atomic::add (jint add_value, volatile jint* dest) { | |
76 return (jint)(*os::atomic_add_func)(add_value, dest); | |
77 } | |
78 | |
79 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { | |
80 return (intptr_t)(*os::atomic_add_ptr_func)(add_value, dest); | |
81 } | |
82 | |
83 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { | |
84 return (void*)(*os::atomic_add_ptr_func)(add_value, (volatile intptr_t*)dest); | |
85 } | |
86 | |
87 inline void Atomic::inc (volatile jint* dest) { | |
88 (void)add (1, dest); | |
89 } | |
90 | |
91 inline void Atomic::inc_ptr(volatile intptr_t* dest) { | |
92 (void)add_ptr(1, dest); | |
93 } | |
94 | |
95 inline void Atomic::inc_ptr(volatile void* dest) { | |
96 (void)add_ptr(1, dest); | |
97 } | |
98 | |
99 inline void Atomic::dec (volatile jint* dest) { | |
100 (void)add (-1, dest); | |
101 } | |
102 | |
103 inline void Atomic::dec_ptr(volatile intptr_t* dest) { | |
104 (void)add_ptr(-1, dest); | |
105 } | |
106 | |
107 inline void Atomic::dec_ptr(volatile void* dest) { | |
108 (void)add_ptr(-1, dest); | |
109 } | |
110 | |
111 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { | |
112 return (jint)(*os::atomic_xchg_func)(exchange_value, dest); | |
113 } | |
114 | |
115 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { | |
116 return (intptr_t)(os::atomic_xchg_ptr_func)(exchange_value, dest); | |
117 } | |
118 | |
119 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { | |
120 return (void *)(os::atomic_xchg_ptr_func)((intptr_t)exchange_value, (volatile intptr_t*)dest); | |
121 } | |
122 | |
123 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { | |
124 return (*os::atomic_cmpxchg_func)(exchange_value, dest, compare_value); | |
125 } | |
126 | |
127 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { | |
128 return (*os::atomic_cmpxchg_long_func)(exchange_value, dest, compare_value); | |
129 } | |
130 | |
131 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { | |
132 return (intptr_t)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value); | |
133 } | |
134 | |
135 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { | |
136 return (void*)cmpxchg((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value); | |
137 } | |
138 | |
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139 inline jlong Atomic::load(volatile jlong* src) { return *src; } |
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140 |
0 | 141 #else // !AMD64 |
142 | |
143 inline jint Atomic::add (jint add_value, volatile jint* dest) { | |
144 int mp = os::is_MP(); | |
145 __asm { | |
146 mov edx, dest; | |
147 mov eax, add_value; | |
148 mov ecx, eax; | |
149 LOCK_IF_MP(mp) | |
150 xadd dword ptr [edx], eax; | |
151 add eax, ecx; | |
152 } | |
153 } | |
154 | |
155 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { | |
156 return (intptr_t)add((jint)add_value, (volatile jint*)dest); | |
157 } | |
158 | |
159 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { | |
160 return (void*)add((jint)add_value, (volatile jint*)dest); | |
161 } | |
162 | |
163 inline void Atomic::inc (volatile jint* dest) { | |
164 // alternative for InterlockedIncrement | |
165 int mp = os::is_MP(); | |
166 __asm { | |
167 mov edx, dest; | |
168 LOCK_IF_MP(mp) | |
169 add dword ptr [edx], 1; | |
170 } | |
171 } | |
172 | |
173 inline void Atomic::inc_ptr(volatile intptr_t* dest) { | |
174 inc((volatile jint*)dest); | |
175 } | |
176 | |
177 inline void Atomic::inc_ptr(volatile void* dest) { | |
178 inc((volatile jint*)dest); | |
179 } | |
180 | |
181 inline void Atomic::dec (volatile jint* dest) { | |
182 // alternative for InterlockedDecrement | |
183 int mp = os::is_MP(); | |
184 __asm { | |
185 mov edx, dest; | |
186 LOCK_IF_MP(mp) | |
187 sub dword ptr [edx], 1; | |
188 } | |
189 } | |
190 | |
191 inline void Atomic::dec_ptr(volatile intptr_t* dest) { | |
192 dec((volatile jint*)dest); | |
193 } | |
194 | |
195 inline void Atomic::dec_ptr(volatile void* dest) { | |
196 dec((volatile jint*)dest); | |
197 } | |
198 | |
199 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { | |
200 // alternative for InterlockedExchange | |
201 __asm { | |
202 mov eax, exchange_value; | |
203 mov ecx, dest; | |
204 xchg eax, dword ptr [ecx]; | |
205 } | |
206 } | |
207 | |
208 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { | |
209 return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest); | |
210 } | |
211 | |
212 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { | |
213 return (void*)xchg((jint)exchange_value, (volatile jint*)dest); | |
214 } | |
215 | |
216 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { | |
217 // alternative for InterlockedCompareExchange | |
218 int mp = os::is_MP(); | |
219 __asm { | |
220 mov edx, dest | |
221 mov ecx, exchange_value | |
222 mov eax, compare_value | |
223 LOCK_IF_MP(mp) | |
224 cmpxchg dword ptr [edx], ecx | |
225 } | |
226 } | |
227 | |
228 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { | |
229 int mp = os::is_MP(); | |
230 jint ex_lo = (jint)exchange_value; | |
231 jint ex_hi = *( ((jint*)&exchange_value) + 1 ); | |
232 jint cmp_lo = (jint)compare_value; | |
233 jint cmp_hi = *( ((jint*)&compare_value) + 1 ); | |
234 __asm { | |
235 push ebx | |
236 push edi | |
237 mov eax, cmp_lo | |
238 mov edx, cmp_hi | |
239 mov edi, dest | |
240 mov ebx, ex_lo | |
241 mov ecx, ex_hi | |
242 LOCK_IF_MP(mp) | |
243 cmpxchg8b qword ptr [edi] | |
244 pop edi | |
245 pop ebx | |
246 } | |
247 } | |
248 | |
249 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { | |
250 return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); | |
251 } | |
252 | |
253 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { | |
254 return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); | |
255 } | |
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256 |
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257 inline jlong Atomic::load(volatile jlong* src) { |
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258 volatile jlong dest; |
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259 volatile jlong* pdest = &dest; |
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260 __asm { |
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261 mov eax, src |
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262 fild qword ptr [eax] |
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263 mov eax, pdest |
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264 fistp qword ptr [eax] |
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265 } |
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266 return dest; |
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267 } |
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268 |
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269 inline void Atomic::store(jlong store_value, volatile jlong* dest) { |
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270 volatile jlong* src = &store_value; |
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271 __asm { |
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272 mov eax, src |
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273 fild qword ptr [eax] |
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274 mov eax, dest |
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275 fistp qword ptr [eax] |
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276 } |
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277 } |
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278 |
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279 inline void Atomic::store(jlong store_value, jlong* dest) { |
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280 Atomic::store(store_value, (volatile jlong*)dest); |
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281 } |
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282 |
0 | 283 #endif // AMD64 |
284 | |
285 #pragma warning(default: 4035) // Enables warnings reporting missing return statement | |
1972 | 286 |
287 #endif // OS_CPU_WINDOWS_X86_VM_ATOMIC_WINDOWS_X86_INLINE_HPP |