Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/stubRoutines.hpp @ 23886:5601e440e5e7
8130150: Implement BigInteger.montgomeryMultiply intrinsic
Reviewed-by: kvn, mdoerr
author | vkempik |
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date | Fri, 04 Mar 2016 16:15:48 +0300 |
parents | 51c505229e71 |
children | f13e777eb255 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2015, 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 SHARE_VM_RUNTIME_STUBROUTINES_HPP |
26 #define SHARE_VM_RUNTIME_STUBROUTINES_HPP | |
27 | |
28 #include "code/codeBlob.hpp" | |
29 #include "memory/allocation.hpp" | |
30 #include "runtime/frame.hpp" | |
31 #include "runtime/mutexLocker.hpp" | |
32 #include "runtime/stubCodeGenerator.hpp" | |
33 #include "utilities/top.hpp" | |
34 #ifdef TARGET_ARCH_x86 | |
35 # include "nativeInst_x86.hpp" | |
36 #endif | |
37 #ifdef TARGET_ARCH_sparc | |
38 # include "nativeInst_sparc.hpp" | |
39 #endif | |
40 #ifdef TARGET_ARCH_zero | |
41 # include "nativeInst_zero.hpp" | |
42 #endif | |
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43 #ifdef TARGET_ARCH_arm |
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44 # include "nativeInst_arm.hpp" |
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45 #endif |
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46 #ifdef TARGET_ARCH_ppc |
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47 # include "nativeInst_ppc.hpp" |
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48 #endif |
1972 | 49 |
0 | 50 // StubRoutines provides entry points to assembly routines used by |
51 // compiled code and the run-time system. Platform-specific entry | |
52 // points are defined in the platform-specific inner class. | |
53 // | |
54 // Class scheme: | |
55 // | |
56 // platform-independent platform-dependent | |
57 // | |
58 // stubRoutines.hpp <-- included -- stubRoutines_<arch>.hpp | |
59 // ^ ^ | |
60 // | | | |
61 // implements implements | |
62 // | | | |
63 // | | | |
64 // stubRoutines.cpp stubRoutines_<arch>.cpp | |
65 // stubRoutines_<os_family>.cpp stubGenerator_<arch>.cpp | |
66 // stubRoutines_<os_arch>.cpp | |
67 // | |
68 // Note 1: The important thing is a clean decoupling between stub | |
69 // entry points (interfacing to the whole vm; i.e., 1-to-n | |
70 // relationship) and stub generators (interfacing only to | |
71 // the entry points implementation; i.e., 1-to-1 relationship). | |
72 // This significantly simplifies changes in the generator | |
73 // structure since the rest of the vm is not affected. | |
74 // | |
75 // Note 2: stubGenerator_<arch>.cpp contains a minimal portion of | |
76 // machine-independent code; namely the generator calls of | |
77 // the generator functions that are used platform-independently. | |
78 // However, it comes with the advantage of having a 1-file | |
79 // implementation of the generator. It should be fairly easy | |
80 // to change, should it become a problem later. | |
81 // | |
82 // Scheme for adding a new entry point: | |
83 // | |
84 // 1. determine if it's a platform-dependent or independent entry point | |
85 // a) if platform independent: make subsequent changes in the independent files | |
86 // b) if platform dependent: make subsequent changes in the dependent files | |
87 // 2. add a private instance variable holding the entry point address | |
88 // 3. add a public accessor function to the instance variable | |
89 // 4. implement the corresponding generator function in the platform-dependent | |
90 // stubGenerator_<arch>.cpp file and call the function in generate_all() of that file | |
91 | |
92 | |
93 class StubRoutines: AllStatic { | |
94 | |
95 public: | |
96 enum platform_independent_constants { | |
97 max_size_of_parameters = 256 // max. parameter size supported by megamorphic lookups | |
98 }; | |
99 | |
100 // Dependencies | |
101 friend class StubGenerator; | |
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102 #if defined STUBROUTINES_MD_HPP |
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103 # include STUBROUTINES_MD_HPP |
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104 #elif defined TARGET_ARCH_MODEL_x86_32 |
1972 | 105 # include "stubRoutines_x86_32.hpp" |
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106 #elif defined TARGET_ARCH_MODEL_x86_64 |
1972 | 107 # include "stubRoutines_x86_64.hpp" |
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108 #elif defined TARGET_ARCH_MODEL_sparc |
1972 | 109 # include "stubRoutines_sparc.hpp" |
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110 #elif defined TARGET_ARCH_MODEL_zero |
1972 | 111 # include "stubRoutines_zero.hpp" |
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112 #elif defined TARGET_ARCH_MODEL_ppc_64 |
14391 | 113 # include "stubRoutines_ppc_64.hpp" |
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114 #endif |
1972 | 115 |
0 | 116 static jint _verify_oop_count; |
117 static address _verify_oop_subroutine_entry; | |
118 | |
119 static address _call_stub_return_address; // the return PC, when returning to a call stub | |
120 static address _call_stub_entry; | |
121 static address _forward_exception_entry; | |
122 static address _catch_exception_entry; | |
123 static address _throw_AbstractMethodError_entry; | |
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124 static address _throw_IncompatibleClassChangeError_entry; |
0 | 125 static address _throw_NullPointerException_at_call_entry; |
126 static address _throw_StackOverflowError_entry; | |
127 static address _handler_for_unsafe_access_entry; | |
128 | |
129 static address _atomic_xchg_entry; | |
130 static address _atomic_xchg_ptr_entry; | |
131 static address _atomic_store_entry; | |
132 static address _atomic_store_ptr_entry; | |
133 static address _atomic_cmpxchg_entry; | |
134 static address _atomic_cmpxchg_ptr_entry; | |
135 static address _atomic_cmpxchg_long_entry; | |
136 static address _atomic_add_entry; | |
137 static address _atomic_add_ptr_entry; | |
138 static address _fence_entry; | |
139 static address _d2i_wrapper; | |
140 static address _d2l_wrapper; | |
141 | |
142 static jint _fpu_cntrl_wrd_std; | |
143 static jint _fpu_cntrl_wrd_24; | |
144 static jint _fpu_cntrl_wrd_64; | |
145 static jint _fpu_cntrl_wrd_trunc; | |
146 static jint _mxcsr_std; | |
147 static jint _fpu_subnormal_bias1[3]; | |
148 static jint _fpu_subnormal_bias2[3]; | |
149 | |
150 static BufferBlob* _code1; // code buffer for initial routines | |
151 static BufferBlob* _code2; // code buffer for all other routines | |
152 | |
153 // Leaf routines which implement arraycopy and their addresses | |
154 // arraycopy operands aligned on element type boundary | |
155 static address _jbyte_arraycopy; | |
156 static address _jshort_arraycopy; | |
157 static address _jint_arraycopy; | |
158 static address _jlong_arraycopy; | |
2324 | 159 static address _oop_arraycopy, _oop_arraycopy_uninit; |
0 | 160 static address _jbyte_disjoint_arraycopy; |
161 static address _jshort_disjoint_arraycopy; | |
162 static address _jint_disjoint_arraycopy; | |
163 static address _jlong_disjoint_arraycopy; | |
2324 | 164 static address _oop_disjoint_arraycopy, _oop_disjoint_arraycopy_uninit; |
0 | 165 |
166 // arraycopy operands aligned on zero'th element boundary | |
167 // These are identical to the ones aligned aligned on an | |
168 // element type boundary, except that they assume that both | |
169 // source and destination are HeapWord aligned. | |
170 static address _arrayof_jbyte_arraycopy; | |
171 static address _arrayof_jshort_arraycopy; | |
172 static address _arrayof_jint_arraycopy; | |
173 static address _arrayof_jlong_arraycopy; | |
2324 | 174 static address _arrayof_oop_arraycopy, _arrayof_oop_arraycopy_uninit; |
0 | 175 static address _arrayof_jbyte_disjoint_arraycopy; |
176 static address _arrayof_jshort_disjoint_arraycopy; | |
177 static address _arrayof_jint_disjoint_arraycopy; | |
178 static address _arrayof_jlong_disjoint_arraycopy; | |
2324 | 179 static address _arrayof_oop_disjoint_arraycopy, _arrayof_oop_disjoint_arraycopy_uninit; |
0 | 180 |
181 // these are recommended but optional: | |
2324 | 182 static address _checkcast_arraycopy, _checkcast_arraycopy_uninit; |
0 | 183 static address _unsafe_arraycopy; |
184 static address _generic_arraycopy; | |
185 | |
1763 | 186 static address _jbyte_fill; |
187 static address _jshort_fill; | |
188 static address _jint_fill; | |
189 static address _arrayof_jbyte_fill; | |
190 static address _arrayof_jshort_fill; | |
191 static address _arrayof_jint_fill; | |
192 | |
3892 | 193 // zero heap space aligned to jlong (8 bytes) |
194 static address _zero_aligned_words; | |
195 | |
6894 | 196 static address _aescrypt_encryptBlock; |
197 static address _aescrypt_decryptBlock; | |
198 static address _cipherBlockChaining_encryptAESCrypt; | |
199 static address _cipherBlockChaining_decryptAESCrypt; | |
200 | |
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201 static address _sha1_implCompress; |
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202 static address _sha1_implCompressMB; |
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203 static address _sha256_implCompress; |
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204 static address _sha256_implCompressMB; |
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205 static address _sha512_implCompress; |
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206 static address _sha512_implCompressMB; |
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207 |
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208 static address _updateBytesCRC32; |
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209 static address _crc_table_adr; |
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210 |
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211 static address _multiplyToLen; |
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212 static address _squareToLen; |
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213 static address _mulAdd; |
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214 static address _montgomeryMultiply; |
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215 static address _montgomerySquare; |
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216 |
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217 // These are versions of the java.lang.Math methods which perform |
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218 // the same operations as the intrinsic version. They are used for |
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219 // constant folding in the compiler to ensure equivalence. If the |
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220 // intrinsic version returns the same result as the strict version |
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221 // then they can be set to the appropriate function from |
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222 // SharedRuntime. |
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223 static double (*_intrinsic_log)(double); |
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224 static double (*_intrinsic_log10)(double); |
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225 static double (*_intrinsic_exp)(double); |
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226 static double (*_intrinsic_pow)(double, double); |
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227 static double (*_intrinsic_sin)(double); |
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228 static double (*_intrinsic_cos)(double); |
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229 static double (*_intrinsic_tan)(double); |
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230 |
11127 | 231 // Safefetch stubs. |
232 static address _safefetch32_entry; | |
233 static address _safefetch32_fault_pc; | |
234 static address _safefetch32_continuation_pc; | |
235 static address _safefetchN_entry; | |
236 static address _safefetchN_fault_pc; | |
237 static address _safefetchN_continuation_pc; | |
238 | |
0 | 239 public: |
240 // Initialization/Testing | |
241 static void initialize1(); // must happen before universe::genesis | |
242 static void initialize2(); // must happen after universe::genesis | |
243 | |
10405 | 244 static bool is_stub_code(address addr) { return contains(addr); } |
245 | |
0 | 246 static bool contains(address addr) { |
247 return | |
248 (_code1 != NULL && _code1->blob_contains(addr)) || | |
249 (_code2 != NULL && _code2->blob_contains(addr)) ; | |
250 } | |
251 | |
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252 static CodeBlob* code1() { return _code1; } |
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253 static CodeBlob* code2() { return _code2; } |
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254 |
0 | 255 // Debugging |
256 static jint verify_oop_count() { return _verify_oop_count; } | |
257 static jint* verify_oop_count_addr() { return &_verify_oop_count; } | |
258 // a subroutine for debugging the GC | |
259 static address verify_oop_subroutine_entry_address() { return (address)&_verify_oop_subroutine_entry; } | |
260 | |
261 static address catch_exception_entry() { return _catch_exception_entry; } | |
262 | |
263 // Calls to Java | |
264 typedef void (*CallStub)( | |
265 address link, | |
266 intptr_t* result, | |
267 BasicType result_type, | |
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268 Method* method, |
0 | 269 address entry_point, |
270 intptr_t* parameters, | |
271 int size_of_parameters, | |
272 TRAPS | |
273 ); | |
274 | |
275 static CallStub call_stub() { return CAST_TO_FN_PTR(CallStub, _call_stub_entry); } | |
276 | |
277 // Exceptions | |
278 static address forward_exception_entry() { return _forward_exception_entry; } | |
279 // Implicit exceptions | |
280 static address throw_AbstractMethodError_entry() { return _throw_AbstractMethodError_entry; } | |
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281 static address throw_IncompatibleClassChangeError_entry(){ return _throw_IncompatibleClassChangeError_entry; } |
0 | 282 static address throw_NullPointerException_at_call_entry(){ return _throw_NullPointerException_at_call_entry; } |
283 static address throw_StackOverflowError_entry() { return _throw_StackOverflowError_entry; } | |
284 | |
285 // Exceptions during unsafe access - should throw Java exception rather | |
286 // than crash. | |
287 static address handler_for_unsafe_access() { return _handler_for_unsafe_access_entry; } | |
288 | |
289 static address atomic_xchg_entry() { return _atomic_xchg_entry; } | |
290 static address atomic_xchg_ptr_entry() { return _atomic_xchg_ptr_entry; } | |
291 static address atomic_store_entry() { return _atomic_store_entry; } | |
292 static address atomic_store_ptr_entry() { return _atomic_store_ptr_entry; } | |
293 static address atomic_cmpxchg_entry() { return _atomic_cmpxchg_entry; } | |
294 static address atomic_cmpxchg_ptr_entry() { return _atomic_cmpxchg_ptr_entry; } | |
295 static address atomic_cmpxchg_long_entry() { return _atomic_cmpxchg_long_entry; } | |
296 static address atomic_add_entry() { return _atomic_add_entry; } | |
297 static address atomic_add_ptr_entry() { return _atomic_add_ptr_entry; } | |
298 static address fence_entry() { return _fence_entry; } | |
299 | |
300 static address d2i_wrapper() { return _d2i_wrapper; } | |
301 static address d2l_wrapper() { return _d2l_wrapper; } | |
302 static jint fpu_cntrl_wrd_std() { return _fpu_cntrl_wrd_std; } | |
303 static address addr_fpu_cntrl_wrd_std() { return (address)&_fpu_cntrl_wrd_std; } | |
304 static address addr_fpu_cntrl_wrd_24() { return (address)&_fpu_cntrl_wrd_24; } | |
305 static address addr_fpu_cntrl_wrd_64() { return (address)&_fpu_cntrl_wrd_64; } | |
306 static address addr_fpu_cntrl_wrd_trunc() { return (address)&_fpu_cntrl_wrd_trunc; } | |
307 static address addr_mxcsr_std() { return (address)&_mxcsr_std; } | |
308 static address addr_fpu_subnormal_bias1() { return (address)&_fpu_subnormal_bias1; } | |
309 static address addr_fpu_subnormal_bias2() { return (address)&_fpu_subnormal_bias2; } | |
310 | |
311 | |
2446 | 312 static address select_arraycopy_function(BasicType t, bool aligned, bool disjoint, const char* &name, bool dest_uninitialized); |
313 | |
0 | 314 static address jbyte_arraycopy() { return _jbyte_arraycopy; } |
315 static address jshort_arraycopy() { return _jshort_arraycopy; } | |
316 static address jint_arraycopy() { return _jint_arraycopy; } | |
317 static address jlong_arraycopy() { return _jlong_arraycopy; } | |
2324 | 318 static address oop_arraycopy(bool dest_uninitialized = false) { |
319 return dest_uninitialized ? _oop_arraycopy_uninit : _oop_arraycopy; | |
320 } | |
0 | 321 static address jbyte_disjoint_arraycopy() { return _jbyte_disjoint_arraycopy; } |
322 static address jshort_disjoint_arraycopy() { return _jshort_disjoint_arraycopy; } | |
323 static address jint_disjoint_arraycopy() { return _jint_disjoint_arraycopy; } | |
324 static address jlong_disjoint_arraycopy() { return _jlong_disjoint_arraycopy; } | |
2324 | 325 static address oop_disjoint_arraycopy(bool dest_uninitialized = false) { |
326 return dest_uninitialized ? _oop_disjoint_arraycopy_uninit : _oop_disjoint_arraycopy; | |
327 } | |
0 | 328 |
329 static address arrayof_jbyte_arraycopy() { return _arrayof_jbyte_arraycopy; } | |
330 static address arrayof_jshort_arraycopy() { return _arrayof_jshort_arraycopy; } | |
331 static address arrayof_jint_arraycopy() { return _arrayof_jint_arraycopy; } | |
332 static address arrayof_jlong_arraycopy() { return _arrayof_jlong_arraycopy; } | |
2324 | 333 static address arrayof_oop_arraycopy(bool dest_uninitialized = false) { |
334 return dest_uninitialized ? _arrayof_oop_arraycopy_uninit : _arrayof_oop_arraycopy; | |
335 } | |
0 | 336 |
337 static address arrayof_jbyte_disjoint_arraycopy() { return _arrayof_jbyte_disjoint_arraycopy; } | |
338 static address arrayof_jshort_disjoint_arraycopy() { return _arrayof_jshort_disjoint_arraycopy; } | |
339 static address arrayof_jint_disjoint_arraycopy() { return _arrayof_jint_disjoint_arraycopy; } | |
340 static address arrayof_jlong_disjoint_arraycopy() { return _arrayof_jlong_disjoint_arraycopy; } | |
2324 | 341 static address arrayof_oop_disjoint_arraycopy(bool dest_uninitialized = false) { |
342 return dest_uninitialized ? _arrayof_oop_disjoint_arraycopy_uninit : _arrayof_oop_disjoint_arraycopy; | |
343 } | |
0 | 344 |
2324 | 345 static address checkcast_arraycopy(bool dest_uninitialized = false) { |
346 return dest_uninitialized ? _checkcast_arraycopy_uninit : _checkcast_arraycopy; | |
347 } | |
0 | 348 static address unsafe_arraycopy() { return _unsafe_arraycopy; } |
349 static address generic_arraycopy() { return _generic_arraycopy; } | |
350 | |
1763 | 351 static address jbyte_fill() { return _jbyte_fill; } |
352 static address jshort_fill() { return _jshort_fill; } | |
353 static address jint_fill() { return _jint_fill; } | |
354 static address arrayof_jbyte_fill() { return _arrayof_jbyte_fill; } | |
355 static address arrayof_jshort_fill() { return _arrayof_jshort_fill; } | |
356 static address arrayof_jint_fill() { return _arrayof_jint_fill; } | |
357 | |
6894 | 358 static address aescrypt_encryptBlock() { return _aescrypt_encryptBlock; } |
359 static address aescrypt_decryptBlock() { return _aescrypt_decryptBlock; } | |
360 static address cipherBlockChaining_encryptAESCrypt() { return _cipherBlockChaining_encryptAESCrypt; } | |
361 static address cipherBlockChaining_decryptAESCrypt() { return _cipherBlockChaining_decryptAESCrypt; } | |
362 | |
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363 static address sha1_implCompress() { return _sha1_implCompress; } |
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364 static address sha1_implCompressMB() { return _sha1_implCompressMB; } |
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365 static address sha256_implCompress() { return _sha256_implCompress; } |
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366 static address sha256_implCompressMB() { return _sha256_implCompressMB; } |
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367 static address sha512_implCompress() { return _sha512_implCompress; } |
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368 static address sha512_implCompressMB() { return _sha512_implCompressMB; } |
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369 |
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370 static address updateBytesCRC32() { return _updateBytesCRC32; } |
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371 static address crc_table_addr() { return _crc_table_adr; } |
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372 |
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373 static address multiplyToLen() {return _multiplyToLen; } |
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374 static address squareToLen() {return _squareToLen; } |
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375 static address mulAdd() {return _mulAdd; } |
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376 static address montgomeryMultiply() { return _montgomeryMultiply; } |
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377 static address montgomerySquare() { return _montgomerySquare; } |
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378 |
1763 | 379 static address select_fill_function(BasicType t, bool aligned, const char* &name); |
380 | |
3892 | 381 static address zero_aligned_words() { return _zero_aligned_words; } |
1763 | 382 |
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383 static double intrinsic_log(double d) { |
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384 assert(_intrinsic_log != NULL, "must be defined"); |
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385 return _intrinsic_log(d); |
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386 } |
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387 static double intrinsic_log10(double d) { |
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388 assert(_intrinsic_log != NULL, "must be defined"); |
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389 return _intrinsic_log10(d); |
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390 } |
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391 static double intrinsic_exp(double d) { |
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392 assert(_intrinsic_exp != NULL, "must be defined"); |
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393 return _intrinsic_exp(d); |
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394 } |
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395 static double intrinsic_pow(double d, double d2) { |
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396 assert(_intrinsic_pow != NULL, "must be defined"); |
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397 return _intrinsic_pow(d, d2); |
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398 } |
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399 static double intrinsic_sin(double d) { |
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400 assert(_intrinsic_sin != NULL, "must be defined"); |
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401 return _intrinsic_sin(d); |
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402 } |
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403 static double intrinsic_cos(double d) { |
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404 assert(_intrinsic_cos != NULL, "must be defined"); |
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405 return _intrinsic_cos(d); |
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406 } |
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407 static double intrinsic_tan(double d) { |
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408 assert(_intrinsic_tan != NULL, "must be defined"); |
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409 return _intrinsic_tan(d); |
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410 } |
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411 |
0 | 412 // |
11127 | 413 // Safefetch stub support |
414 // | |
415 | |
416 typedef int (*SafeFetch32Stub)(int* adr, int errValue); | |
417 typedef intptr_t (*SafeFetchNStub) (intptr_t* adr, intptr_t errValue); | |
418 | |
419 static SafeFetch32Stub SafeFetch32_stub() { return CAST_TO_FN_PTR(SafeFetch32Stub, _safefetch32_entry); } | |
420 static SafeFetchNStub SafeFetchN_stub() { return CAST_TO_FN_PTR(SafeFetchNStub, _safefetchN_entry); } | |
421 | |
422 static bool is_safefetch_fault(address pc) { | |
423 return pc != NULL && | |
424 (pc == _safefetch32_fault_pc || | |
425 pc == _safefetchN_fault_pc); | |
426 } | |
427 | |
428 static address continuation_for_safefetch_fault(address pc) { | |
429 assert(_safefetch32_continuation_pc != NULL && | |
430 _safefetchN_continuation_pc != NULL, | |
431 "not initialized"); | |
432 | |
433 if (pc == _safefetch32_fault_pc) return _safefetch32_continuation_pc; | |
434 if (pc == _safefetchN_fault_pc) return _safefetchN_continuation_pc; | |
435 | |
436 ShouldNotReachHere(); | |
437 return NULL; | |
438 } | |
439 | |
440 // | |
0 | 441 // Default versions of the above arraycopy functions for platforms which do |
442 // not have specialized versions | |
443 // | |
2324 | 444 static void jbyte_copy (jbyte* src, jbyte* dest, size_t count); |
445 static void jshort_copy (jshort* src, jshort* dest, size_t count); | |
446 static void jint_copy (jint* src, jint* dest, size_t count); | |
447 static void jlong_copy (jlong* src, jlong* dest, size_t count); | |
448 static void oop_copy (oop* src, oop* dest, size_t count); | |
449 static void oop_copy_uninit(oop* src, oop* dest, size_t count); | |
0 | 450 |
2324 | 451 static void arrayof_jbyte_copy (HeapWord* src, HeapWord* dest, size_t count); |
452 static void arrayof_jshort_copy (HeapWord* src, HeapWord* dest, size_t count); | |
453 static void arrayof_jint_copy (HeapWord* src, HeapWord* dest, size_t count); | |
454 static void arrayof_jlong_copy (HeapWord* src, HeapWord* dest, size_t count); | |
455 static void arrayof_oop_copy (HeapWord* src, HeapWord* dest, size_t count); | |
456 static void arrayof_oop_copy_uninit(HeapWord* src, HeapWord* dest, size_t count); | |
0 | 457 }; |
1972 | 458 |
11127 | 459 // Safefetch allows to load a value from a location that's not known |
460 // to be valid. If the load causes a fault, the error value is returned. | |
461 inline int SafeFetch32(int* adr, int errValue) { | |
462 assert(StubRoutines::SafeFetch32_stub(), "stub not yet generated"); | |
463 return StubRoutines::SafeFetch32_stub()(adr, errValue); | |
464 } | |
465 inline intptr_t SafeFetchN(intptr_t* adr, intptr_t errValue) { | |
466 assert(StubRoutines::SafeFetchN_stub(), "stub not yet generated"); | |
467 return StubRoutines::SafeFetchN_stub()(adr, errValue); | |
468 } | |
469 | |
1972 | 470 #endif // SHARE_VM_RUNTIME_STUBROUTINES_HPP |