Mercurial > hg > graal-jvmci-8
annotate src/share/vm/interpreter/interpreterRuntime.cpp @ 24170:0b85ccd62409 jdk8u131-b01
8168699: Validate special case invocations
Reviewed-by: kevinw, vlivanov
| author | coleenp |
|---|---|
| date | Tue, 13 Dec 2016 14:37:04 -0500 |
| parents | a02fdb3c047d |
| children | 719853999215 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 23614 | 2 * Copyright (c) 1997, 2016, 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 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "classfile/vmSymbols.hpp" | |
| 28 #include "compiler/compileBroker.hpp" | |
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29 #include "compiler/disassembler.hpp" |
| 1972 | 30 #include "gc_interface/collectedHeap.hpp" |
| 31 #include "interpreter/interpreter.hpp" | |
| 32 #include "interpreter/interpreterRuntime.hpp" | |
| 33 #include "interpreter/linkResolver.hpp" | |
| 34 #include "interpreter/templateTable.hpp" | |
| 35 #include "memory/oopFactory.hpp" | |
| 36 #include "memory/universe.inline.hpp" | |
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37 #include "oops/constantPool.hpp" |
| 1972 | 38 #include "oops/instanceKlass.hpp" |
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39 #include "oops/methodData.hpp" |
| 1972 | 40 #include "oops/objArrayKlass.hpp" |
| 41 #include "oops/oop.inline.hpp" | |
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42 #include "oops/symbol.hpp" |
| 1972 | 43 #include "prims/jvmtiExport.hpp" |
| 44 #include "prims/nativeLookup.hpp" | |
| 45 #include "runtime/biasedLocking.hpp" | |
| 46 #include "runtime/compilationPolicy.hpp" | |
| 47 #include "runtime/deoptimization.hpp" | |
| 48 #include "runtime/fieldDescriptor.hpp" | |
| 49 #include "runtime/handles.inline.hpp" | |
| 50 #include "runtime/interfaceSupport.hpp" | |
| 51 #include "runtime/java.hpp" | |
| 52 #include "runtime/jfieldIDWorkaround.hpp" | |
| 53 #include "runtime/osThread.hpp" | |
| 54 #include "runtime/sharedRuntime.hpp" | |
| 55 #include "runtime/stubRoutines.hpp" | |
| 56 #include "runtime/synchronizer.hpp" | |
| 57 #include "runtime/threadCritical.hpp" | |
| 58 #include "utilities/events.hpp" | |
| 59 #ifdef TARGET_ARCH_x86 | |
| 60 # include "vm_version_x86.hpp" | |
| 61 #endif | |
| 62 #ifdef TARGET_ARCH_sparc | |
| 63 # include "vm_version_sparc.hpp" | |
| 64 #endif | |
| 65 #ifdef TARGET_ARCH_zero | |
| 66 # include "vm_version_zero.hpp" | |
| 67 #endif | |
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68 #ifdef TARGET_ARCH_arm |
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69 # include "vm_version_arm.hpp" |
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70 #endif |
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71 #ifdef TARGET_ARCH_ppc |
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72 # include "vm_version_ppc.hpp" |
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73 #endif |
| 1972 | 74 #ifdef COMPILER2 |
| 75 #include "opto/runtime.hpp" | |
| 76 #endif | |
| 0 | 77 |
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78 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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79 |
| 0 | 80 class UnlockFlagSaver { |
| 81 private: | |
| 82 JavaThread* _thread; | |
| 83 bool _do_not_unlock; | |
| 84 public: | |
| 85 UnlockFlagSaver(JavaThread* t) { | |
| 86 _thread = t; | |
| 87 _do_not_unlock = t->do_not_unlock_if_synchronized(); | |
| 88 t->set_do_not_unlock_if_synchronized(false); | |
| 89 } | |
| 90 ~UnlockFlagSaver() { | |
| 91 _thread->set_do_not_unlock_if_synchronized(_do_not_unlock); | |
| 92 } | |
| 93 }; | |
| 94 | |
| 95 //------------------------------------------------------------------------------------------------------------------------ | |
| 96 // State accessors | |
| 97 | |
| 98 void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread *thread) { | |
| 99 last_frame(thread).interpreter_frame_set_bcp(bcp); | |
| 100 if (ProfileInterpreter) { | |
| 101 // ProfileTraps uses MDOs independently of ProfileInterpreter. | |
| 102 // That is why we must check both ProfileInterpreter and mdo != NULL. | |
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103 MethodData* mdo = last_frame(thread).interpreter_frame_method()->method_data(); |
| 0 | 104 if (mdo != NULL) { |
| 105 NEEDS_CLEANUP; | |
| 106 last_frame(thread).interpreter_frame_set_mdp(mdo->bci_to_dp(last_frame(thread).interpreter_frame_bci())); | |
| 107 } | |
| 108 } | |
| 109 } | |
| 110 | |
| 111 //------------------------------------------------------------------------------------------------------------------------ | |
| 112 // Constants | |
| 113 | |
| 114 | |
| 115 IRT_ENTRY(void, InterpreterRuntime::ldc(JavaThread* thread, bool wide)) | |
| 116 // access constant pool | |
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117 ConstantPool* pool = method(thread)->constants(); |
| 1565 | 118 int index = wide ? get_index_u2(thread, Bytecodes::_ldc_w) : get_index_u1(thread, Bytecodes::_ldc); |
| 0 | 119 constantTag tag = pool->tag_at(index); |
| 120 | |
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121 assert (tag.is_unresolved_klass() || tag.is_klass(), "wrong ldc call"); |
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122 Klass* klass = pool->klass_at(index, CHECK); |
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123 oop java_class = klass->java_mirror(); |
| 0 | 124 thread->set_vm_result(java_class); |
| 125 IRT_END | |
| 126 | |
| 1602 | 127 IRT_ENTRY(void, InterpreterRuntime::resolve_ldc(JavaThread* thread, Bytecodes::Code bytecode)) { |
| 128 assert(bytecode == Bytecodes::_fast_aldc || | |
| 129 bytecode == Bytecodes::_fast_aldc_w, "wrong bc"); | |
| 130 ResourceMark rm(thread); | |
| 131 methodHandle m (thread, method(thread)); | |
| 2142 | 132 Bytecode_loadconstant ldc(m, bci(thread)); |
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133 oop result = ldc.resolve_constant(CHECK); |
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134 #ifdef ASSERT |
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135 { |
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136 // The bytecode wrappers aren't GC-safe so construct a new one |
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137 Bytecode_loadconstant ldc2(m, bci(thread)); |
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138 oop coop = m->constants()->resolved_references()->obj_at(ldc2.cache_index()); |
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139 assert(result == coop, "expected result for assembly code"); |
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140 } |
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141 #endif |
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142 thread->set_vm_result(result); |
| 1602 | 143 } |
| 144 IRT_END | |
| 145 | |
| 0 | 146 |
| 147 //------------------------------------------------------------------------------------------------------------------------ | |
| 148 // Allocation | |
| 149 | |
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150 IRT_ENTRY(void, InterpreterRuntime::_new(JavaThread* thread, ConstantPool* pool, int index)) |
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151 Klass* k_oop = pool->klass_at(index, CHECK); |
| 0 | 152 instanceKlassHandle klass (THREAD, k_oop); |
| 153 | |
| 154 // Make sure we are not instantiating an abstract klass | |
| 155 klass->check_valid_for_instantiation(true, CHECK); | |
| 156 | |
| 157 // Make sure klass is initialized | |
| 158 klass->initialize(CHECK); | |
| 159 | |
| 160 // At this point the class may not be fully initialized | |
| 161 // because of recursive initialization. If it is fully | |
| 162 // initialized & has_finalized is not set, we rewrite | |
| 163 // it into its fast version (Note: no locking is needed | |
| 164 // here since this is an atomic byte write and can be | |
| 165 // done more than once). | |
| 166 // | |
| 167 // Note: In case of classes with has_finalized we don't | |
| 168 // rewrite since that saves us an extra check in | |
| 169 // the fast version which then would call the | |
| 170 // slow version anyway (and do a call back into | |
| 171 // Java). | |
| 172 // If we have a breakpoint, then we don't rewrite | |
| 173 // because the _breakpoint bytecode would be lost. | |
| 174 oop obj = klass->allocate_instance(CHECK); | |
| 175 thread->set_vm_result(obj); | |
| 176 IRT_END | |
| 177 | |
| 178 | |
| 179 IRT_ENTRY(void, InterpreterRuntime::newarray(JavaThread* thread, BasicType type, jint size)) | |
| 180 oop obj = oopFactory::new_typeArray(type, size, CHECK); | |
| 181 thread->set_vm_result(obj); | |
| 182 IRT_END | |
| 183 | |
| 184 | |
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185 IRT_ENTRY(void, InterpreterRuntime::anewarray(JavaThread* thread, ConstantPool* pool, int index, jint size)) |
| 0 | 186 // Note: no oopHandle for pool & klass needed since they are not used |
| 187 // anymore after new_objArray() and no GC can happen before. | |
| 188 // (This may have to change if this code changes!) | |
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189 Klass* klass = pool->klass_at(index, CHECK); |
| 0 | 190 objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK); |
| 191 thread->set_vm_result(obj); | |
| 192 IRT_END | |
| 193 | |
| 194 | |
| 195 IRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* thread, jint* first_size_address)) | |
| 196 // We may want to pass in more arguments - could make this slightly faster | |
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197 ConstantPool* constants = method(thread)->constants(); |
| 1565 | 198 int i = get_index_u2(thread, Bytecodes::_multianewarray); |
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199 Klass* klass = constants->klass_at(i, CHECK); |
| 0 | 200 int nof_dims = number_of_dimensions(thread); |
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201 assert(klass->is_klass(), "not a class"); |
| 0 | 202 assert(nof_dims >= 1, "multianewarray rank must be nonzero"); |
| 203 | |
| 204 // We must create an array of jints to pass to multi_allocate. | |
| 205 ResourceMark rm(thread); | |
| 206 const int small_dims = 10; | |
| 207 jint dim_array[small_dims]; | |
| 208 jint *dims = &dim_array[0]; | |
| 209 if (nof_dims > small_dims) { | |
| 210 dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims); | |
| 211 } | |
| 212 for (int index = 0; index < nof_dims; index++) { | |
| 213 // offset from first_size_address is addressed as local[index] | |
| 214 int n = Interpreter::local_offset_in_bytes(index)/jintSize; | |
| 215 dims[index] = first_size_address[n]; | |
| 216 } | |
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217 oop obj = ArrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK); |
| 0 | 218 thread->set_vm_result(obj); |
| 219 IRT_END | |
| 220 | |
| 221 | |
| 222 IRT_ENTRY(void, InterpreterRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) | |
| 223 assert(obj->is_oop(), "must be a valid oop"); | |
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224 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
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225 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
| 0 | 226 IRT_END |
| 227 | |
| 228 | |
| 229 // Quicken instance-of and check-cast bytecodes | |
| 230 IRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* thread)) | |
| 231 // Force resolving; quicken the bytecode | |
| 1565 | 232 int which = get_index_u2(thread, Bytecodes::_checkcast); |
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233 ConstantPool* cpool = method(thread)->constants(); |
| 0 | 234 // We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded |
| 235 // program we might have seen an unquick'd bytecode in the interpreter but have another | |
| 236 // thread quicken the bytecode before we get here. | |
| 237 // assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" ); | |
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238 Klass* klass = cpool->klass_at(which, CHECK); |
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239 thread->set_vm_result_2(klass); |
| 0 | 240 IRT_END |
| 241 | |
| 242 | |
| 243 //------------------------------------------------------------------------------------------------------------------------ | |
| 244 // Exceptions | |
| 245 | |
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246 void InterpreterRuntime::note_trap_inner(JavaThread* thread, int reason, |
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247 methodHandle trap_method, int trap_bci, TRAPS) { |
| 0 | 248 if (trap_method.not_null()) { |
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249 MethodData* trap_mdo = trap_method->method_data(); |
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250 if (trap_mdo == NULL) { |
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251 Method::build_interpreter_method_data(trap_method, THREAD); |
| 0 | 252 if (HAS_PENDING_EXCEPTION) { |
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253 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), |
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254 "we expect only an OOM error here"); |
| 0 | 255 CLEAR_PENDING_EXCEPTION; |
| 256 } | |
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257 trap_mdo = trap_method->method_data(); |
| 0 | 258 // and fall through... |
| 259 } | |
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260 if (trap_mdo != NULL) { |
| 0 | 261 // Update per-method count of trap events. The interpreter |
| 262 // is updating the MDO to simulate the effect of compiler traps. | |
| 263 Deoptimization::update_method_data_from_interpreter(trap_mdo, trap_bci, reason); | |
| 264 } | |
| 265 } | |
| 266 } | |
| 267 | |
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268 // Assume the compiler is (or will be) interested in this event. |
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269 // If necessary, create an MDO to hold the information, and record it. |
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270 void InterpreterRuntime::note_trap(JavaThread* thread, int reason, TRAPS) { |
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271 assert(ProfileTraps, "call me only if profiling"); |
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272 methodHandle trap_method(thread, method(thread)); |
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273 int trap_bci = trap_method->bci_from(bcp(thread)); |
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274 note_trap_inner(thread, reason, trap_method, trap_bci, THREAD); |
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275 } |
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276 |
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277 #ifdef CC_INTERP |
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278 // As legacy note_trap, but we have more arguments. |
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279 IRT_ENTRY(void, InterpreterRuntime::note_trap(JavaThread* thread, int reason, Method *method, int trap_bci)) |
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280 methodHandle trap_method(method); |
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281 note_trap_inner(thread, reason, trap_method, trap_bci, THREAD); |
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282 IRT_END |
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283 |
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284 // Class Deoptimization is not visible in BytecodeInterpreter, so we need a wrapper |
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285 // for each exception. |
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286 void InterpreterRuntime::note_nullCheck_trap(JavaThread* thread, Method *method, int trap_bci) |
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287 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_null_check, method, trap_bci); } |
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288 void InterpreterRuntime::note_div0Check_trap(JavaThread* thread, Method *method, int trap_bci) |
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289 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_div0_check, method, trap_bci); } |
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290 void InterpreterRuntime::note_rangeCheck_trap(JavaThread* thread, Method *method, int trap_bci) |
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291 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_range_check, method, trap_bci); } |
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292 void InterpreterRuntime::note_classCheck_trap(JavaThread* thread, Method *method, int trap_bci) |
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293 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_class_check, method, trap_bci); } |
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294 void InterpreterRuntime::note_arrayCheck_trap(JavaThread* thread, Method *method, int trap_bci) |
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295 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_array_check, method, trap_bci); } |
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296 #endif // CC_INTERP |
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297 |
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298 |
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299 static Handle get_preinitialized_exception(Klass* k, TRAPS) { |
| 0 | 300 // get klass |
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301 InstanceKlass* klass = InstanceKlass::cast(k); |
| 0 | 302 assert(klass->is_initialized(), |
| 303 "this klass should have been initialized during VM initialization"); | |
| 304 // create instance - do not call constructor since we may have no | |
| 305 // (java) stack space left (should assert constructor is empty) | |
| 306 Handle exception; | |
| 307 oop exception_oop = klass->allocate_instance(CHECK_(exception)); | |
| 308 exception = Handle(THREAD, exception_oop); | |
| 309 if (StackTraceInThrowable) { | |
| 310 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 311 } | |
| 312 return exception; | |
| 313 } | |
| 314 | |
| 315 // Special handling for stack overflow: since we don't have any (java) stack | |
| 316 // space left we use the pre-allocated & pre-initialized StackOverflowError | |
| 317 // klass to create an stack overflow error instance. We do not call its | |
| 318 // constructor for the same reason (it is empty, anyway). | |
| 319 IRT_ENTRY(void, InterpreterRuntime::throw_StackOverflowError(JavaThread* thread)) | |
| 320 Handle exception = get_preinitialized_exception( | |
| 321 SystemDictionary::StackOverflowError_klass(), | |
| 322 CHECK); | |
| 323 THROW_HANDLE(exception); | |
| 324 IRT_END | |
| 325 | |
| 326 | |
| 327 IRT_ENTRY(void, InterpreterRuntime::create_exception(JavaThread* thread, char* name, char* message)) | |
| 328 // lookup exception klass | |
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329 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
| 0 | 330 if (ProfileTraps) { |
| 331 if (s == vmSymbols::java_lang_ArithmeticException()) { | |
| 332 note_trap(thread, Deoptimization::Reason_div0_check, CHECK); | |
| 333 } else if (s == vmSymbols::java_lang_NullPointerException()) { | |
| 334 note_trap(thread, Deoptimization::Reason_null_check, CHECK); | |
| 335 } | |
| 336 } | |
| 337 // create exception | |
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338 Handle exception = Exceptions::new_exception(thread, s, message); |
| 0 | 339 thread->set_vm_result(exception()); |
| 340 IRT_END | |
| 341 | |
| 342 | |
| 343 IRT_ENTRY(void, InterpreterRuntime::create_klass_exception(JavaThread* thread, char* name, oopDesc* obj)) | |
| 344 ResourceMark rm(thread); | |
| 6983 | 345 const char* klass_name = obj->klass()->external_name(); |
| 0 | 346 // lookup exception klass |
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347 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
| 0 | 348 if (ProfileTraps) { |
| 349 note_trap(thread, Deoptimization::Reason_class_check, CHECK); | |
| 350 } | |
| 351 // create exception, with klass name as detail message | |
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352 Handle exception = Exceptions::new_exception(thread, s, klass_name); |
| 0 | 353 thread->set_vm_result(exception()); |
| 354 IRT_END | |
| 355 | |
| 356 | |
| 357 IRT_ENTRY(void, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index)) | |
| 358 char message[jintAsStringSize]; | |
| 359 // lookup exception klass | |
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360 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
| 0 | 361 if (ProfileTraps) { |
| 362 note_trap(thread, Deoptimization::Reason_range_check, CHECK); | |
| 363 } | |
| 364 // create exception | |
| 365 sprintf(message, "%d", index); | |
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366 THROW_MSG(s, message); |
| 0 | 367 IRT_END |
| 368 | |
| 369 IRT_ENTRY(void, InterpreterRuntime::throw_ClassCastException( | |
| 370 JavaThread* thread, oopDesc* obj)) | |
| 371 | |
| 372 ResourceMark rm(thread); | |
| 373 char* message = SharedRuntime::generate_class_cast_message( | |
| 6983 | 374 thread, obj->klass()->external_name()); |
| 0 | 375 |
| 376 if (ProfileTraps) { | |
| 377 note_trap(thread, Deoptimization::Reason_class_check, CHECK); | |
| 378 } | |
| 379 | |
| 380 // create exception | |
| 381 THROW_MSG(vmSymbols::java_lang_ClassCastException(), message); | |
| 382 IRT_END | |
| 383 | |
| 384 // exception_handler_for_exception(...) returns the continuation address, | |
| 385 // the exception oop (via TLS) and sets the bci/bcp for the continuation. | |
| 386 // The exception oop is returned to make sure it is preserved over GC (it | |
| 387 // is only on the stack if the exception was thrown explicitly via athrow). | |
| 388 // During this operation, the expression stack contains the values for the | |
| 389 // bci where the exception happened. If the exception was propagated back | |
| 390 // from a call, the expression stack contains the values for the bci at the | |
| 391 // invoke w/o arguments (i.e., as if one were inside the call). | |
| 392 IRT_ENTRY(address, InterpreterRuntime::exception_handler_for_exception(JavaThread* thread, oopDesc* exception)) | |
| 393 | |
| 394 Handle h_exception(thread, exception); | |
| 395 methodHandle h_method (thread, method(thread)); | |
| 396 constantPoolHandle h_constants(thread, h_method->constants()); | |
| 397 bool should_repeat; | |
| 398 int handler_bci; | |
| 1602 | 399 int current_bci = bci(thread); |
| 0 | 400 |
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401 if (thread->frames_to_pop_failed_realloc() > 0) { |
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402 // Allocation of scalar replaced object used in this frame |
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403 // failed. Unconditionally pop the frame. |
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404 thread->dec_frames_to_pop_failed_realloc(); |
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405 thread->set_vm_result(h_exception()); |
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406 // If the method is synchronized we already unlocked the monitor |
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407 // during deoptimization so the interpreter needs to skip it when |
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408 // the frame is popped. |
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409 thread->set_do_not_unlock_if_synchronized(true); |
| 22853 | 410 #ifdef CC_INTERP |
| 411 return (address) -1; | |
| 412 #else | |
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413 return Interpreter::remove_activation_entry(); |
| 22853 | 414 #endif |
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415 } |
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416 |
| 0 | 417 // Need to do this check first since when _do_not_unlock_if_synchronized |
| 418 // is set, we don't want to trigger any classloading which may make calls | |
| 419 // into java, or surprisingly find a matching exception handler for bci 0 | |
| 420 // since at this moment the method hasn't been "officially" entered yet. | |
| 421 if (thread->do_not_unlock_if_synchronized()) { | |
| 422 ResourceMark rm; | |
| 423 assert(current_bci == 0, "bci isn't zero for do_not_unlock_if_synchronized"); | |
| 424 thread->set_vm_result(exception); | |
| 425 #ifdef CC_INTERP | |
| 426 return (address) -1; | |
| 427 #else | |
| 428 return Interpreter::remove_activation_entry(); | |
| 429 #endif | |
| 430 } | |
| 431 | |
| 432 do { | |
| 433 should_repeat = false; | |
| 434 | |
| 435 // assertions | |
| 436 #ifdef ASSERT | |
| 437 assert(h_exception.not_null(), "NULL exceptions should be handled by athrow"); | |
| 438 assert(h_exception->is_oop(), "just checking"); | |
| 439 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError | |
| 1142 | 440 if (!(h_exception->is_a(SystemDictionary::Throwable_klass()))) { |
| 0 | 441 if (ExitVMOnVerifyError) vm_exit(-1); |
| 442 ShouldNotReachHere(); | |
| 443 } | |
| 444 #endif | |
| 445 | |
| 446 // tracing | |
| 447 if (TraceExceptions) { | |
| 448 ttyLocker ttyl; | |
| 449 ResourceMark rm(thread); | |
| 450 tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", h_exception->print_value_string(), (address)h_exception()); | |
| 451 tty->print_cr(" thrown in interpreter method <%s>", h_method->print_value_string()); | |
| 452 tty->print_cr(" at bci %d for thread " INTPTR_FORMAT, current_bci, thread); | |
| 453 } | |
| 454 // Don't go paging in something which won't be used. | |
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455 // else if (extable->length() == 0) { |
| 0 | 456 // // disabled for now - interpreter is not using shortcut yet |
| 457 // // (shortcut is not to call runtime if we have no exception handlers) | |
| 458 // // warning("performance bug: should not call runtime if method has no exception handlers"); | |
| 459 // } | |
| 460 // for AbortVMOnException flag | |
| 461 NOT_PRODUCT(Exceptions::debug_check_abort(h_exception)); | |
| 462 | |
| 463 // exception handler lookup | |
| 464 KlassHandle h_klass(THREAD, h_exception->klass()); | |
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465 handler_bci = Method::fast_exception_handler_bci_for(h_method, h_klass, current_bci, THREAD); |
| 0 | 466 if (HAS_PENDING_EXCEPTION) { |
| 467 // We threw an exception while trying to find the exception handler. | |
| 468 // Transfer the new exception to the exception handle which will | |
| 469 // be set into thread local storage, and do another lookup for an | |
| 470 // exception handler for this exception, this time starting at the | |
| 471 // BCI of the exception handler which caused the exception to be | |
| 472 // thrown (bug 4307310). | |
| 473 h_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 474 CLEAR_PENDING_EXCEPTION; | |
| 475 if (handler_bci >= 0) { | |
| 476 current_bci = handler_bci; | |
| 477 should_repeat = true; | |
| 478 } | |
| 479 } | |
| 480 } while (should_repeat == true); | |
| 481 | |
| 482 // notify JVMTI of an exception throw; JVMTI will detect if this is a first | |
| 483 // time throw or a stack unwinding throw and accordingly notify the debugger | |
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484 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 485 JvmtiExport::post_exception_throw(thread, h_method(), bcp(thread), h_exception()); |
| 486 } | |
| 487 | |
| 488 #ifdef CC_INTERP | |
| 489 address continuation = (address)(intptr_t) handler_bci; | |
| 490 #else | |
| 491 address continuation = NULL; | |
| 492 #endif | |
| 493 address handler_pc = NULL; | |
| 494 if (handler_bci < 0 || !thread->reguard_stack((address) &continuation)) { | |
| 495 // Forward exception to callee (leaving bci/bcp untouched) because (a) no | |
| 496 // handler in this method, or (b) after a stack overflow there is not yet | |
| 497 // enough stack space available to reprotect the stack. | |
| 498 #ifndef CC_INTERP | |
| 499 continuation = Interpreter::remove_activation_entry(); | |
| 500 #endif | |
| 501 // Count this for compilation purposes | |
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502 h_method->interpreter_throwout_increment(THREAD); |
| 0 | 503 } else { |
| 504 // handler in this method => change bci/bcp to handler bci/bcp and continue there | |
| 505 handler_pc = h_method->code_base() + handler_bci; | |
| 506 #ifndef CC_INTERP | |
| 507 set_bcp_and_mdp(handler_pc, thread); | |
| 508 continuation = Interpreter::dispatch_table(vtos)[*handler_pc]; | |
| 509 #endif | |
| 510 } | |
| 511 // notify debugger of an exception catch | |
| 512 // (this is good for exceptions caught in native methods as well) | |
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513 if (JvmtiExport::can_post_on_exceptions()) { |
| 0 | 514 JvmtiExport::notice_unwind_due_to_exception(thread, h_method(), handler_pc, h_exception(), (handler_pc != NULL)); |
| 515 } | |
| 516 | |
| 517 thread->set_vm_result(h_exception()); | |
| 518 return continuation; | |
| 519 IRT_END | |
| 520 | |
| 521 | |
| 522 IRT_ENTRY(void, InterpreterRuntime::throw_pending_exception(JavaThread* thread)) | |
| 523 assert(thread->has_pending_exception(), "must only ne called if there's an exception pending"); | |
| 524 // nothing to do - eventually we should remove this code entirely (see comments @ call sites) | |
| 525 IRT_END | |
| 526 | |
| 527 | |
| 528 IRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodError(JavaThread* thread)) | |
| 529 THROW(vmSymbols::java_lang_AbstractMethodError()); | |
| 530 IRT_END | |
| 531 | |
| 532 | |
| 533 IRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) | |
| 534 THROW(vmSymbols::java_lang_IncompatibleClassChangeError()); | |
| 535 IRT_END | |
| 536 | |
| 537 | |
| 538 //------------------------------------------------------------------------------------------------------------------------ | |
| 539 // Fields | |
| 540 // | |
| 541 | |
| 542 IRT_ENTRY(void, InterpreterRuntime::resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode)) | |
| 543 // resolve field | |
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544 fieldDescriptor info; |
| 0 | 545 constantPoolHandle pool(thread, method(thread)->constants()); |
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546 bool is_put = (bytecode == Bytecodes::_putfield || bytecode == Bytecodes::_putstatic); |
| 0 | 547 bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic); |
| 548 | |
| 549 { | |
| 550 JvmtiHideSingleStepping jhss(thread); | |
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551 LinkResolver::resolve_field_access(info, pool, get_index_u2_cpcache(thread, bytecode), |
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552 bytecode, CHECK); |
| 0 | 553 } // end JvmtiHideSingleStepping |
| 554 | |
| 555 // check if link resolution caused cpCache to be updated | |
| 556 if (already_resolved(thread)) return; | |
| 557 | |
| 558 // compute auxiliary field attributes | |
| 559 TosState state = as_TosState(info.field_type()); | |
| 560 | |
| 561 // We need to delay resolving put instructions on final fields | |
| 562 // until we actually invoke one. This is required so we throw | |
| 563 // exceptions at the correct place. If we do not resolve completely | |
| 564 // in the current pass, leaving the put_code set to zero will | |
| 565 // cause the next put instruction to reresolve. | |
| 566 Bytecodes::Code put_code = (Bytecodes::Code)0; | |
| 567 | |
| 568 // We also need to delay resolving getstatic instructions until the | |
| 569 // class is intitialized. This is required so that access to the static | |
| 570 // field will call the initialization function every time until the class | |
| 571 // is completely initialized ala. in 2.17.5 in JVM Specification. | |
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572 InstanceKlass* klass = InstanceKlass::cast(info.field_holder()); |
| 0 | 573 bool uninitialized_static = ((bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic) && |
| 574 !klass->is_initialized()); | |
| 575 Bytecodes::Code get_code = (Bytecodes::Code)0; | |
| 576 | |
| 577 if (!uninitialized_static) { | |
| 578 get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield); | |
| 579 if (is_put || !info.access_flags().is_final()) { | |
| 580 put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield); | |
| 581 } | |
| 582 } | |
| 583 | |
| 584 cache_entry(thread)->set_field( | |
| 585 get_code, | |
| 586 put_code, | |
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587 info.field_holder(), |
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588 info.index(), |
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589 info.offset(), |
| 0 | 590 state, |
| 591 info.access_flags().is_final(), | |
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592 info.access_flags().is_volatile(), |
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593 pool->pool_holder() |
| 0 | 594 ); |
| 595 IRT_END | |
| 596 | |
| 597 | |
| 598 //------------------------------------------------------------------------------------------------------------------------ | |
| 599 // Synchronization | |
| 600 // | |
| 601 // The interpreter's synchronization code is factored out so that it can | |
| 602 // be shared by method invocation and synchronized blocks. | |
| 603 //%note synchronization_3 | |
| 604 | |
| 605 //%note monitor_1 | |
| 606 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem)) | |
| 607 #ifdef ASSERT | |
| 608 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
| 609 #endif | |
| 610 if (PrintBiasedLockingStatistics) { | |
| 611 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); | |
| 612 } | |
| 613 Handle h_obj(thread, elem->obj()); | |
| 614 assert(Universe::heap()->is_in_reserved_or_null(h_obj()), | |
| 615 "must be NULL or an object"); | |
| 616 if (UseBiasedLocking) { | |
| 617 // Retry fast entry if bias is revoked to avoid unnecessary inflation | |
| 618 ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK); | |
| 619 } else { | |
| 620 ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK); | |
| 621 } | |
| 622 assert(Universe::heap()->is_in_reserved_or_null(elem->obj()), | |
| 623 "must be NULL or an object"); | |
| 624 #ifdef ASSERT | |
| 625 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
| 626 #endif | |
| 627 IRT_END | |
| 628 | |
| 629 | |
| 630 //%note monitor_1 | |
| 631 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem)) | |
| 632 #ifdef ASSERT | |
| 633 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
| 634 #endif | |
| 635 Handle h_obj(thread, elem->obj()); | |
| 636 assert(Universe::heap()->is_in_reserved_or_null(h_obj()), | |
| 637 "must be NULL or an object"); | |
| 638 if (elem == NULL || h_obj()->is_unlocked()) { | |
| 639 THROW(vmSymbols::java_lang_IllegalMonitorStateException()); | |
| 640 } | |
| 641 ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread); | |
| 642 // Free entry. This must be done here, since a pending exception might be installed on | |
| 643 // exit. If it is not cleared, the exception handling code will try to unlock the monitor again. | |
| 644 elem->set_obj(NULL); | |
| 645 #ifdef ASSERT | |
| 646 thread->last_frame().interpreter_frame_verify_monitor(elem); | |
| 647 #endif | |
| 648 IRT_END | |
| 649 | |
| 650 | |
| 651 IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread)) | |
| 652 THROW(vmSymbols::java_lang_IllegalMonitorStateException()); | |
| 653 IRT_END | |
| 654 | |
| 655 | |
| 656 IRT_ENTRY(void, InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* thread)) | |
| 657 // Returns an illegal exception to install into the current thread. The | |
| 658 // pending_exception flag is cleared so normal exception handling does not | |
| 659 // trigger. Any current installed exception will be overwritten. This | |
| 660 // method will be called during an exception unwind. | |
| 661 | |
| 662 assert(!HAS_PENDING_EXCEPTION, "no pending exception"); | |
| 663 Handle exception(thread, thread->vm_result()); | |
| 664 assert(exception() != NULL, "vm result should be set"); | |
| 665 thread->set_vm_result(NULL); // clear vm result before continuing (may cause memory leaks and assert failures) | |
| 1142 | 666 if (!exception->is_a(SystemDictionary::ThreadDeath_klass())) { |
| 0 | 667 exception = get_preinitialized_exception( |
| 668 SystemDictionary::IllegalMonitorStateException_klass(), | |
| 669 CATCH); | |
| 670 } | |
| 671 thread->set_vm_result(exception()); | |
| 672 IRT_END | |
| 673 | |
| 674 | |
| 675 //------------------------------------------------------------------------------------------------------------------------ | |
| 676 // Invokes | |
| 677 | |
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678 IRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, Method* method, address bcp)) |
| 0 | 679 return method->orig_bytecode_at(method->bci_from(bcp)); |
| 680 IRT_END | |
| 681 | |
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682 IRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* thread, Method* method, address bcp, Bytecodes::Code new_code)) |
| 0 | 683 method->set_orig_bytecode_at(method->bci_from(bcp), new_code); |
| 684 IRT_END | |
| 685 | |
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686 IRT_ENTRY(void, InterpreterRuntime::_breakpoint(JavaThread* thread, Method* method, address bcp)) |
| 0 | 687 JvmtiExport::post_raw_breakpoint(thread, method, bcp); |
| 688 IRT_END | |
| 689 | |
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690 IRT_ENTRY(void, InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode)) { |
| 0 | 691 // extract receiver from the outgoing argument list if necessary |
| 692 Handle receiver(thread, NULL); | |
| 24170 | 693 if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface || |
| 694 bytecode == Bytecodes::_invokespecial) { | |
| 0 | 695 ResourceMark rm(thread); |
| 696 methodHandle m (thread, method(thread)); | |
| 2142 | 697 Bytecode_invoke call(m, bci(thread)); |
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698 Symbol* signature = call.signature(); |
| 0 | 699 receiver = Handle(thread, |
| 700 thread->last_frame().interpreter_callee_receiver(signature)); | |
| 701 assert(Universe::heap()->is_in_reserved_or_null(receiver()), | |
| 702 "sanity check"); | |
| 703 assert(receiver.is_null() || | |
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704 !Universe::heap()->is_in_reserved(receiver->klass()), |
| 0 | 705 "sanity check"); |
| 706 } | |
| 707 | |
| 708 // resolve method | |
| 709 CallInfo info; | |
| 710 constantPoolHandle pool(thread, method(thread)->constants()); | |
| 711 | |
| 712 { | |
| 713 JvmtiHideSingleStepping jhss(thread); | |
| 714 LinkResolver::resolve_invoke(info, receiver, pool, | |
| 1565 | 715 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
| 0 | 716 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { |
| 717 int retry_count = 0; | |
| 718 while (info.resolved_method()->is_old()) { | |
| 719 // It is very unlikely that method is redefined more than 100 times | |
| 720 // in the middle of resolve. If it is looping here more than 100 times | |
| 721 // means then there could be a bug here. | |
| 722 guarantee((retry_count++ < 100), | |
| 723 "Could not resolve to latest version of redefined method"); | |
| 724 // method is redefined in the middle of resolve so re-try. | |
| 725 LinkResolver::resolve_invoke(info, receiver, pool, | |
| 1565 | 726 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
| 0 | 727 } |
| 728 } | |
| 729 } // end JvmtiHideSingleStepping | |
| 730 | |
| 731 // check if link resolution caused cpCache to be updated | |
| 732 if (already_resolved(thread)) return; | |
| 733 | |
| 734 if (bytecode == Bytecodes::_invokeinterface) { | |
| 735 if (TraceItables && Verbose) { | |
| 736 ResourceMark rm(thread); | |
| 737 tty->print_cr("Resolving: klass: %s to method: %s", info.resolved_klass()->name()->as_C_string(), info.resolved_method()->name()->as_C_string()); | |
| 738 } | |
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739 } |
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740 #ifdef ASSERT |
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741 if (bytecode == Bytecodes::_invokeinterface) { |
| 0 | 742 if (info.resolved_method()->method_holder() == |
| 1142 | 743 SystemDictionary::Object_klass()) { |
| 0 | 744 // NOTE: THIS IS A FIX FOR A CORNER CASE in the JVM spec |
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745 // (see also CallInfo::set_interface for details) |
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746 assert(info.call_kind() == CallInfo::vtable_call || |
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747 info.call_kind() == CallInfo::direct_call, ""); |
| 0 | 748 methodHandle rm = info.resolved_method(); |
| 749 assert(rm->is_final() || info.has_vtable_index(), | |
| 750 "should have been set already"); | |
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751 } else if (!info.resolved_method()->has_itable_index()) { |
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752 // Resolved something like CharSequence.toString. Use vtable not itable. |
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753 assert(info.call_kind() != CallInfo::itable_call, ""); |
| 0 | 754 } else { |
| 755 // Setup itable entry | |
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756 assert(info.call_kind() == CallInfo::itable_call, ""); |
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757 int index = info.resolved_method()->itable_index(); |
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758 assert(info.itable_index() == index, ""); |
| 0 | 759 } |
| 24170 | 760 } else if (bytecode == Bytecodes::_invokespecial) { |
| 761 assert(info.call_kind() == CallInfo::direct_call, "must be direct call"); | |
| 0 | 762 } else { |
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763 assert(info.call_kind() == CallInfo::direct_call || |
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764 info.call_kind() == CallInfo::vtable_call, ""); |
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765 } |
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766 #endif |
| 24170 | 767 // Get sender or sender's host_klass, and only set cpCache entry to resolved if |
| 768 // it is not an interface. The receiver for invokespecial calls within interface | |
| 769 // methods must be checked for every call. | |
| 770 InstanceKlass* sender = pool->pool_holder(); | |
| 771 sender = sender->is_anonymous() ? InstanceKlass::cast(sender->host_klass()) : sender; | |
| 772 | |
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773 switch (info.call_kind()) { |
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774 case CallInfo::direct_call: |
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775 cache_entry(thread)->set_direct_call( |
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776 bytecode, |
| 24170 | 777 info.resolved_method(), |
| 778 sender->is_interface()); | |
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779 break; |
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780 case CallInfo::vtable_call: |
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781 cache_entry(thread)->set_vtable_call( |
| 0 | 782 bytecode, |
| 783 info.resolved_method(), | |
| 784 info.vtable_index()); | |
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785 break; |
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786 case CallInfo::itable_call: |
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787 cache_entry(thread)->set_itable_call( |
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788 bytecode, |
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789 info.resolved_method(), |
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790 info.itable_index()); |
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791 break; |
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792 default: ShouldNotReachHere(); |
| 0 | 793 } |
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794 } |
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795 IRT_END |
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796 |
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797 |
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798 // First time execution: Resolve symbols, create a permanent MethodType object. |
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799 IRT_ENTRY(void, InterpreterRuntime::resolve_invokehandle(JavaThread* thread)) { |
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800 assert(EnableInvokeDynamic, ""); |
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801 const Bytecodes::Code bytecode = Bytecodes::_invokehandle; |
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802 |
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803 // resolve method |
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804 CallInfo info; |
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805 constantPoolHandle pool(thread, method(thread)->constants()); |
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806 |
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807 { |
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808 JvmtiHideSingleStepping jhss(thread); |
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809 LinkResolver::resolve_invoke(info, Handle(), pool, |
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810 get_index_u2_cpcache(thread, bytecode), bytecode, CHECK); |
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811 } // end JvmtiHideSingleStepping |
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812 |
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813 cache_entry(thread)->set_method_handle(pool, info); |
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814 } |
| 0 | 815 IRT_END |
| 816 | |
| 817 | |
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818 // First time execution: Resolve symbols, create a permanent CallSite object. |
|
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819 IRT_ENTRY(void, InterpreterRuntime::resolve_invokedynamic(JavaThread* thread)) { |
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820 assert(EnableInvokeDynamic, ""); |
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821 const Bytecodes::Code bytecode = Bytecodes::_invokedynamic; |
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822 |
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823 //TO DO: consider passing BCI to Java. |
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824 // int caller_bci = method(thread)->bci_from(bcp(thread)); |
|
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825 |
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826 // resolve method |
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827 CallInfo info; |
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828 constantPoolHandle pool(thread, method(thread)->constants()); |
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829 int index = get_index_u4(thread, bytecode); |
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830 { |
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831 JvmtiHideSingleStepping jhss(thread); |
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832 LinkResolver::resolve_invoke(info, Handle(), pool, |
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833 index, bytecode, CHECK); |
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834 } // end JvmtiHideSingleStepping |
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835 |
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836 ConstantPoolCacheEntry* cp_cache_entry = pool->invokedynamic_cp_cache_entry_at(index); |
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837 cp_cache_entry->set_dynamic_call(pool, info); |
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838 } |
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839 IRT_END |
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840 |
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841 |
| 0 | 842 //------------------------------------------------------------------------------------------------------------------------ |
| 843 // Miscellaneous | |
| 844 | |
| 845 | |
| 941 | 846 nmethod* InterpreterRuntime::frequency_counter_overflow(JavaThread* thread, address branch_bcp) { |
| 847 nmethod* nm = frequency_counter_overflow_inner(thread, branch_bcp); | |
| 848 assert(branch_bcp != NULL || nm == NULL, "always returns null for non OSR requests"); | |
| 849 if (branch_bcp != NULL && nm != NULL) { | |
| 850 // This was a successful request for an OSR nmethod. Because | |
| 851 // frequency_counter_overflow_inner ends with a safepoint check, | |
| 852 // nm could have been unloaded so look it up again. It's unsafe | |
| 853 // to examine nm directly since it might have been freed and used | |
| 854 // for something else. | |
| 855 frame fr = thread->last_frame(); | |
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856 Method* method = fr.interpreter_frame_method(); |
| 941 | 857 int bci = method->bci_from(fr.interpreter_frame_bcp()); |
| 1783 | 858 nm = method->lookup_osr_nmethod_for(bci, CompLevel_none, false); |
| 941 | 859 } |
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860 #ifndef PRODUCT |
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861 if (TraceOnStackReplacement) { |
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862 if (nm != NULL) { |
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863 tty->print("OSR entry @ pc: " INTPTR_FORMAT ": ", nm->osr_entry()); |
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864 nm->print(); |
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865 } |
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866 } |
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867 #endif |
| 941 | 868 return nm; |
| 869 } | |
| 870 | |
| 0 | 871 IRT_ENTRY(nmethod*, |
| 941 | 872 InterpreterRuntime::frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp)) |
| 0 | 873 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized |
| 874 // flag, in case this method triggers classloading which will call into Java. | |
| 875 UnlockFlagSaver fs(thread); | |
| 876 | |
| 877 frame fr = thread->last_frame(); | |
| 878 assert(fr.is_interpreted_frame(), "must come from interpreter"); | |
| 879 methodHandle method(thread, fr.interpreter_frame_method()); | |
| 1783 | 880 const int branch_bci = branch_bcp != NULL ? method->bci_from(branch_bcp) : InvocationEntryBci; |
| 881 const int bci = branch_bcp != NULL ? method->bci_from(fr.interpreter_frame_bcp()) : InvocationEntryBci; | |
| 882 | |
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883 assert(!HAS_PENDING_EXCEPTION, "Should not have any exceptions pending"); |
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884 nmethod* osr_nm = CompilationPolicy::policy()->event(method, method, branch_bci, bci, CompLevel_none, NULL, thread); |
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885 assert(!HAS_PENDING_EXCEPTION, "Event handler should not throw any exceptions"); |
| 0 | 886 |
| 1783 | 887 if (osr_nm != NULL) { |
| 888 // We may need to do on-stack replacement which requires that no | |
| 889 // monitors in the activation are biased because their | |
| 890 // BasicObjectLocks will need to migrate during OSR. Force | |
| 891 // unbiasing of all monitors in the activation now (even though | |
| 892 // the OSR nmethod might be invalidated) because we don't have a | |
| 893 // safepoint opportunity later once the migration begins. | |
| 894 if (UseBiasedLocking) { | |
| 895 ResourceMark rm; | |
| 896 GrowableArray<Handle>* objects_to_revoke = new GrowableArray<Handle>(); | |
| 897 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); | |
| 898 kptr < fr.interpreter_frame_monitor_begin(); | |
| 899 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { | |
| 900 if( kptr->obj() != NULL ) { | |
| 901 objects_to_revoke->append(Handle(THREAD, kptr->obj())); | |
| 902 } | |
| 0 | 903 } |
| 1783 | 904 BiasedLocking::revoke(objects_to_revoke); |
| 0 | 905 } |
| 906 } | |
| 1783 | 907 return osr_nm; |
| 0 | 908 IRT_END |
| 909 | |
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910 IRT_LEAF(jint, InterpreterRuntime::bcp_to_di(Method* method, address cur_bcp)) |
| 0 | 911 assert(ProfileInterpreter, "must be profiling interpreter"); |
| 912 int bci = method->bci_from(cur_bcp); | |
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913 MethodData* mdo = method->method_data(); |
| 0 | 914 if (mdo == NULL) return 0; |
| 915 return mdo->bci_to_di(bci); | |
| 916 IRT_END | |
| 917 | |
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918 IRT_ENTRY(void, InterpreterRuntime::profile_method(JavaThread* thread)) |
| 0 | 919 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized |
| 920 // flag, in case this method triggers classloading which will call into Java. | |
| 921 UnlockFlagSaver fs(thread); | |
| 922 | |
| 923 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 924 frame fr = thread->last_frame(); | |
| 925 assert(fr.is_interpreted_frame(), "must come from interpreter"); | |
| 926 methodHandle method(thread, fr.interpreter_frame_method()); | |
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927 Method::build_interpreter_method_data(method, THREAD); |
| 0 | 928 if (HAS_PENDING_EXCEPTION) { |
| 929 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); | |
| 930 CLEAR_PENDING_EXCEPTION; | |
| 931 // and fall through... | |
| 932 } | |
| 933 IRT_END | |
| 934 | |
| 935 | |
| 936 #ifdef ASSERT | |
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937 IRT_LEAF(void, InterpreterRuntime::verify_mdp(Method* method, address bcp, address mdp)) |
| 0 | 938 assert(ProfileInterpreter, "must be profiling interpreter"); |
| 939 | |
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940 MethodData* mdo = method->method_data(); |
| 0 | 941 assert(mdo != NULL, "must not be null"); |
| 942 | |
| 943 int bci = method->bci_from(bcp); | |
| 944 | |
| 945 address mdp2 = mdo->bci_to_dp(bci); | |
| 946 if (mdp != mdp2) { | |
| 947 ResourceMark rm; | |
| 948 ResetNoHandleMark rnm; // In a LEAF entry. | |
| 949 HandleMark hm; | |
| 950 tty->print_cr("FAILED verify : actual mdp %p expected mdp %p @ bci %d", mdp, mdp2, bci); | |
| 951 int current_di = mdo->dp_to_di(mdp); | |
| 952 int expected_di = mdo->dp_to_di(mdp2); | |
| 953 tty->print_cr(" actual di %d expected di %d", current_di, expected_di); | |
| 954 int expected_approx_bci = mdo->data_at(expected_di)->bci(); | |
| 955 int approx_bci = -1; | |
| 956 if (current_di >= 0) { | |
| 957 approx_bci = mdo->data_at(current_di)->bci(); | |
| 958 } | |
| 959 tty->print_cr(" actual bci is %d expected bci %d", approx_bci, expected_approx_bci); | |
| 960 mdo->print_on(tty); | |
| 961 method->print_codes(); | |
| 962 } | |
| 963 assert(mdp == mdp2, "wrong mdp"); | |
| 964 IRT_END | |
| 965 #endif // ASSERT | |
| 966 | |
| 967 IRT_ENTRY(void, InterpreterRuntime::update_mdp_for_ret(JavaThread* thread, int return_bci)) | |
| 968 assert(ProfileInterpreter, "must be profiling interpreter"); | |
| 969 ResourceMark rm(thread); | |
| 970 HandleMark hm(thread); | |
| 971 frame fr = thread->last_frame(); | |
| 972 assert(fr.is_interpreted_frame(), "must come from interpreter"); | |
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973 MethodData* h_mdo = fr.interpreter_frame_method()->method_data(); |
| 0 | 974 |
| 975 // Grab a lock to ensure atomic access to setting the return bci and | |
| 976 // the displacement. This can block and GC, invalidating all naked oops. | |
| 977 MutexLocker ml(RetData_lock); | |
| 978 | |
| 979 // ProfileData is essentially a wrapper around a derived oop, so we | |
| 980 // need to take the lock before making any ProfileData structures. | |
| 981 ProfileData* data = h_mdo->data_at(h_mdo->dp_to_di(fr.interpreter_frame_mdp())); | |
| 982 RetData* rdata = data->as_RetData(); | |
| 983 address new_mdp = rdata->fixup_ret(return_bci, h_mdo); | |
| 984 fr.interpreter_frame_set_mdp(new_mdp); | |
| 985 IRT_END | |
| 986 | |
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987 IRT_ENTRY(MethodCounters*, InterpreterRuntime::build_method_counters(JavaThread* thread, Method* m)) |
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988 MethodCounters* mcs = Method::build_method_counters(m, thread); |
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989 if (HAS_PENDING_EXCEPTION) { |
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990 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); |
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991 CLEAR_PENDING_EXCEPTION; |
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992 } |
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993 return mcs; |
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994 IRT_END |
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995 |
| 0 | 996 |
| 997 IRT_ENTRY(void, InterpreterRuntime::at_safepoint(JavaThread* thread)) | |
| 998 // We used to need an explict preserve_arguments here for invoke bytecodes. However, | |
| 999 // stack traversal automatically takes care of preserving arguments for invoke, so | |
| 1000 // this is no longer needed. | |
| 1001 | |
| 1002 // IRT_END does an implicit safepoint check, hence we are guaranteed to block | |
| 1003 // if this is called during a safepoint | |
| 1004 | |
| 1005 if (JvmtiExport::should_post_single_step()) { | |
| 1006 // We are called during regular safepoints and when the VM is | |
| 1007 // single stepping. If any thread is marked for single stepping, | |
| 1008 // then we may have JVMTI work to do. | |
| 1009 JvmtiExport::at_single_stepping_point(thread, method(thread), bcp(thread)); | |
| 1010 } | |
| 1011 IRT_END | |
| 1012 | |
| 1013 IRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread *thread, oopDesc* obj, | |
| 1014 ConstantPoolCacheEntry *cp_entry)) | |
| 1015 | |
| 1016 // check the access_flags for the field in the klass | |
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1017 |
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1018 InstanceKlass* ik = InstanceKlass::cast(cp_entry->f1_as_klass()); |
| 0 | 1019 int index = cp_entry->field_index(); |
| 3938 | 1020 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_ACCESS_WATCHED) == 0) return; |
| 0 | 1021 |
| 1022 switch(cp_entry->flag_state()) { | |
| 1023 case btos: // fall through | |
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1024 case ztos: // fall through |
| 0 | 1025 case ctos: // fall through |
| 1026 case stos: // fall through | |
| 1027 case itos: // fall through | |
| 1028 case ftos: // fall through | |
| 1029 case ltos: // fall through | |
| 1030 case dtos: // fall through | |
| 1031 case atos: break; | |
| 1032 default: ShouldNotReachHere(); return; | |
| 1033 } | |
| 1034 bool is_static = (obj == NULL); | |
| 1035 HandleMark hm(thread); | |
| 1036 | |
| 1037 Handle h_obj; | |
| 1038 if (!is_static) { | |
| 1039 // non-static field accessors have an object, but we need a handle | |
| 1040 h_obj = Handle(thread, obj); | |
| 1041 } | |
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1042 instanceKlassHandle h_cp_entry_f1(thread, (Klass*)cp_entry->f1_as_klass()); |
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1043 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_cp_entry_f1, cp_entry->f2_as_index(), is_static); |
| 0 | 1044 JvmtiExport::post_field_access(thread, method(thread), bcp(thread), h_cp_entry_f1, h_obj, fid); |
| 1045 IRT_END | |
| 1046 | |
| 1047 IRT_ENTRY(void, InterpreterRuntime::post_field_modification(JavaThread *thread, | |
| 1048 oopDesc* obj, ConstantPoolCacheEntry *cp_entry, jvalue *value)) | |
| 1049 | |
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1050 Klass* k = (Klass*)cp_entry->f1_as_klass(); |
| 0 | 1051 |
| 1052 // check the access_flags for the field in the klass | |
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1053 InstanceKlass* ik = InstanceKlass::cast(k); |
| 0 | 1054 int index = cp_entry->field_index(); |
| 1055 // bail out if field modifications are not watched | |
| 3938 | 1056 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_MODIFICATION_WATCHED) == 0) return; |
| 0 | 1057 |
| 1058 char sig_type = '\0'; | |
| 1059 | |
| 1060 switch(cp_entry->flag_state()) { | |
| 23614 | 1061 case btos: sig_type = 'B'; break; |
| 1062 case ztos: sig_type = 'Z'; break; | |
| 0 | 1063 case ctos: sig_type = 'C'; break; |
| 1064 case stos: sig_type = 'S'; break; | |
| 1065 case itos: sig_type = 'I'; break; | |
| 1066 case ftos: sig_type = 'F'; break; | |
| 1067 case atos: sig_type = 'L'; break; | |
| 1068 case ltos: sig_type = 'J'; break; | |
| 1069 case dtos: sig_type = 'D'; break; | |
| 1070 default: ShouldNotReachHere(); return; | |
| 1071 } | |
| 1072 bool is_static = (obj == NULL); | |
| 1073 | |
| 1074 HandleMark hm(thread); | |
| 1075 instanceKlassHandle h_klass(thread, k); | |
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1076 jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_klass, cp_entry->f2_as_index(), is_static); |
| 0 | 1077 jvalue fvalue; |
| 1078 #ifdef _LP64 | |
| 1079 fvalue = *value; | |
| 1080 #else | |
| 1081 // Long/double values are stored unaligned and also noncontiguously with | |
| 1082 // tagged stacks. We can't just do a simple assignment even in the non- | |
| 1083 // J/D cases because a C++ compiler is allowed to assume that a jvalue is | |
| 1084 // 8-byte aligned, and interpreter stack slots are only 4-byte aligned. | |
| 1085 // We assume that the two halves of longs/doubles are stored in interpreter | |
| 1086 // stack slots in platform-endian order. | |
| 1087 jlong_accessor u; | |
| 1088 jint* newval = (jint*)value; | |
| 1089 u.words[0] = newval[0]; | |
| 1506 | 1090 u.words[1] = newval[Interpreter::stackElementWords]; // skip if tag |
| 0 | 1091 fvalue.j = u.long_value; |
| 1092 #endif // _LP64 | |
| 1093 | |
| 1094 Handle h_obj; | |
| 1095 if (!is_static) { | |
| 1096 // non-static field accessors have an object, but we need a handle | |
| 1097 h_obj = Handle(thread, obj); | |
| 1098 } | |
| 1099 | |
| 1100 JvmtiExport::post_raw_field_modification(thread, method(thread), bcp(thread), h_klass, h_obj, | |
| 1101 fid, sig_type, &fvalue); | |
| 1102 IRT_END | |
| 1103 | |
| 1104 IRT_ENTRY(void, InterpreterRuntime::post_method_entry(JavaThread *thread)) | |
| 1105 JvmtiExport::post_method_entry(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); | |
| 1106 IRT_END | |
| 1107 | |
| 1108 | |
| 1109 IRT_ENTRY(void, InterpreterRuntime::post_method_exit(JavaThread *thread)) | |
| 1110 JvmtiExport::post_method_exit(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); | |
| 1111 IRT_END | |
| 1112 | |
| 1113 IRT_LEAF(int, InterpreterRuntime::interpreter_contains(address pc)) | |
| 1114 { | |
| 1115 return (Interpreter::contains(pc) ? 1 : 0); | |
| 1116 } | |
| 1117 IRT_END | |
| 1118 | |
| 1119 | |
| 1120 // Implementation of SignatureHandlerLibrary | |
| 1121 | |
| 1122 address SignatureHandlerLibrary::set_handler_blob() { | |
| 1123 BufferBlob* handler_blob = BufferBlob::create("native signature handlers", blob_size); | |
| 1124 if (handler_blob == NULL) { | |
| 1125 return NULL; | |
| 1126 } | |
| 1748 | 1127 address handler = handler_blob->code_begin(); |
| 0 | 1128 _handler_blob = handler_blob; |
| 1129 _handler = handler; | |
| 1130 return handler; | |
| 1131 } | |
| 1132 | |
| 1133 void SignatureHandlerLibrary::initialize() { | |
| 1134 if (_fingerprints != NULL) { | |
| 1135 return; | |
| 1136 } | |
| 1137 if (set_handler_blob() == NULL) { | |
|
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1138 vm_exit_out_of_memory(blob_size, OOM_MALLOC_ERROR, "native signature handlers"); |
| 0 | 1139 } |
| 1140 | |
| 1141 BufferBlob* bb = BufferBlob::create("Signature Handler Temp Buffer", | |
| 1142 SignatureHandlerLibrary::buffer_size); | |
| 1748 | 1143 _buffer = bb->code_begin(); |
| 0 | 1144 |
| 6197 | 1145 _fingerprints = new(ResourceObj::C_HEAP, mtCode)GrowableArray<uint64_t>(32, true); |
| 1146 _handlers = new(ResourceObj::C_HEAP, mtCode)GrowableArray<address>(32, true); | |
| 0 | 1147 } |
| 1148 | |
| 1149 address SignatureHandlerLibrary::set_handler(CodeBuffer* buffer) { | |
| 1150 address handler = _handler; | |
| 1748 | 1151 int insts_size = buffer->pure_insts_size(); |
| 1152 if (handler + insts_size > _handler_blob->code_end()) { | |
| 0 | 1153 // get a new handler blob |
| 1154 handler = set_handler_blob(); | |
| 1155 } | |
| 1156 if (handler != NULL) { | |
| 1748 | 1157 memcpy(handler, buffer->insts_begin(), insts_size); |
| 0 | 1158 pd_set_handler(handler); |
| 1748 | 1159 ICache::invalidate_range(handler, insts_size); |
| 1160 _handler = handler + insts_size; | |
| 0 | 1161 } |
| 1162 return handler; | |
| 1163 } | |
| 1164 | |
| 1165 void SignatureHandlerLibrary::add(methodHandle method) { | |
| 1166 if (method->signature_handler() == NULL) { | |
| 1167 // use slow signature handler if we can't do better | |
| 1168 int handler_index = -1; | |
| 1169 // check if we can use customized (fast) signature handler | |
| 1170 if (UseFastSignatureHandlers && method->size_of_parameters() <= Fingerprinter::max_size_of_parameters) { | |
| 1171 // use customized signature handler | |
| 1172 MutexLocker mu(SignatureHandlerLibrary_lock); | |
| 1173 // make sure data structure is initialized | |
| 1174 initialize(); | |
| 1175 // lookup method signature's fingerprint | |
| 1176 uint64_t fingerprint = Fingerprinter(method).fingerprint(); | |
| 1177 handler_index = _fingerprints->find(fingerprint); | |
| 1178 // create handler if necessary | |
| 1179 if (handler_index < 0) { | |
| 1180 ResourceMark rm; | |
| 1181 ptrdiff_t align_offset = (address) | |
| 1182 round_to((intptr_t)_buffer, CodeEntryAlignment) - (address)_buffer; | |
| 1183 CodeBuffer buffer((address)(_buffer + align_offset), | |
| 1184 SignatureHandlerLibrary::buffer_size - align_offset); | |
| 1185 InterpreterRuntime::SignatureHandlerGenerator(method, &buffer).generate(fingerprint); | |
| 1186 // copy into code heap | |
| 1187 address handler = set_handler(&buffer); | |
| 1188 if (handler == NULL) { | |
| 1189 // use slow signature handler | |
| 1190 } else { | |
| 1191 // debugging suppport | |
| 1192 if (PrintSignatureHandlers) { | |
| 1193 tty->cr(); | |
| 1194 tty->print_cr("argument handler #%d for: %s %s (fingerprint = " UINT64_FORMAT ", %d bytes generated)", | |
| 1195 _handlers->length(), | |
| 1196 (method->is_static() ? "static" : "receiver"), | |
| 1197 method->name_and_sig_as_C_string(), | |
| 1198 fingerprint, | |
| 1748 | 1199 buffer.insts_size()); |
| 1200 Disassembler::decode(handler, handler + buffer.insts_size()); | |
| 0 | 1201 #ifndef PRODUCT |
| 1202 tty->print_cr(" --- associated result handler ---"); | |
| 1203 address rh_begin = Interpreter::result_handler(method()->result_type()); | |
| 1204 address rh_end = rh_begin; | |
| 1205 while (*(int*)rh_end != 0) { | |
| 1206 rh_end += sizeof(int); | |
| 1207 } | |
| 1208 Disassembler::decode(rh_begin, rh_end); | |
| 1209 #endif | |
| 1210 } | |
| 1211 // add handler to library | |
| 1212 _fingerprints->append(fingerprint); | |
| 1213 _handlers->append(handler); | |
| 1214 // set handler index | |
| 1215 assert(_fingerprints->length() == _handlers->length(), "sanity check"); | |
| 1216 handler_index = _fingerprints->length() - 1; | |
| 1217 } | |
| 1218 } | |
|
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1219 // Set handler under SignatureHandlerLibrary_lock |
| 0 | 1220 if (handler_index < 0) { |
| 1221 // use generic signature handler | |
| 1222 method->set_signature_handler(Interpreter::slow_signature_handler()); | |
| 1223 } else { | |
| 1224 // set handler | |
| 1225 method->set_signature_handler(_handlers->at(handler_index)); | |
| 1226 } | |
|
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1227 } else { |
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1228 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
|
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1229 // use generic signature handler |
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1230 method->set_signature_handler(Interpreter::slow_signature_handler()); |
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1231 } |
| 0 | 1232 } |
|
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1233 #ifdef ASSERT |
|
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1234 int handler_index = -1; |
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1235 int fingerprint_index = -2; |
|
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1236 { |
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1237 // '_handlers' and '_fingerprints' are 'GrowableArray's and are NOT synchronized |
|
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1238 // in any way if accessed from multiple threads. To avoid races with another |
|
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1239 // thread which may change the arrays in the above, mutex protected block, we |
|
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1240 // have to protect this read access here with the same mutex as well! |
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1241 MutexLocker mu(SignatureHandlerLibrary_lock); |
|
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1242 if (_handlers != NULL) { |
|
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1243 handler_index = _handlers->find(method->signature_handler()); |
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1244 fingerprint_index = _fingerprints->find(Fingerprinter(method).fingerprint()); |
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1245 } |
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1246 } |
| 0 | 1247 assert(method->signature_handler() == Interpreter::slow_signature_handler() || |
|
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1248 handler_index == fingerprint_index, "sanity check"); |
|
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1249 #endif // ASSERT |
| 0 | 1250 } |
| 1251 | |
| 1252 | |
| 1253 BufferBlob* SignatureHandlerLibrary::_handler_blob = NULL; | |
| 1254 address SignatureHandlerLibrary::_handler = NULL; | |
| 1255 GrowableArray<uint64_t>* SignatureHandlerLibrary::_fingerprints = NULL; | |
| 1256 GrowableArray<address>* SignatureHandlerLibrary::_handlers = NULL; | |
| 1257 address SignatureHandlerLibrary::_buffer = NULL; | |
| 1258 | |
| 1259 | |
|
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1260 IRT_ENTRY(void, InterpreterRuntime::prepare_native_call(JavaThread* thread, Method* method)) |
| 0 | 1261 methodHandle m(thread, method); |
| 1262 assert(m->is_native(), "sanity check"); | |
| 1263 // lookup native function entry point if it doesn't exist | |
| 1264 bool in_base_library; | |
| 1265 if (!m->has_native_function()) { | |
| 1266 NativeLookup::lookup(m, in_base_library, CHECK); | |
| 1267 } | |
| 1268 // make sure signature handler is installed | |
| 1269 SignatureHandlerLibrary::add(m); | |
| 1270 // The interpreter entry point checks the signature handler first, | |
| 1271 // before trying to fetch the native entry point and klass mirror. | |
| 1272 // We must set the signature handler last, so that multiple processors | |
| 1273 // preparing the same method will be sure to see non-null entry & mirror. | |
| 1274 IRT_END | |
| 1275 | |
|
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1276 #if defined(IA32) || defined(AMD64) || defined(ARM) |
| 0 | 1277 IRT_LEAF(void, InterpreterRuntime::popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address)) |
| 1278 if (src_address == dest_address) { | |
| 1279 return; | |
| 1280 } | |
| 1281 ResetNoHandleMark rnm; // In a LEAF entry. | |
| 1282 HandleMark hm; | |
| 1283 ResourceMark rm; | |
| 1284 frame fr = thread->last_frame(); | |
| 1285 assert(fr.is_interpreted_frame(), ""); | |
| 1286 jint bci = fr.interpreter_frame_bci(); | |
| 1287 methodHandle mh(thread, fr.interpreter_frame_method()); | |
| 2142 | 1288 Bytecode_invoke invoke(mh, bci); |
| 1289 ArgumentSizeComputer asc(invoke.signature()); | |
| 1290 int size_of_arguments = (asc.size() + (invoke.has_receiver() ? 1 : 0)); // receiver | |
|
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1291 Copy::conjoint_jbytes(src_address, dest_address, |
| 1506 | 1292 size_of_arguments * Interpreter::stackElementSize); |
| 0 | 1293 IRT_END |
| 1294 #endif | |
|
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1295 |
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1296 #if INCLUDE_JVMTI |
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1297 // This is a support of the JVMTI PopFrame interface. |
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1298 // Make sure it is an invokestatic of a polymorphic intrinsic that has a member_name argument |
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1299 // and return it as a vm_result so that it can be reloaded in the list of invokestatic parameters. |
|
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1300 // The member_name argument is a saved reference (in local#0) to the member_name. |
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1301 // For backward compatibility with some JDK versions (7, 8) it can also be a direct method handle. |
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1302 // FIXME: remove DMH case after j.l.i.InvokerBytecodeGenerator code shape is updated. |
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1303 IRT_ENTRY(void, InterpreterRuntime::member_name_arg_or_null(JavaThread* thread, address member_name, |
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1304 Method* method, address bcp)) |
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1305 Bytecodes::Code code = Bytecodes::code_at(method, bcp); |
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1306 if (code != Bytecodes::_invokestatic) { |
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1307 return; |
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1308 } |
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1309 ConstantPool* cpool = method->constants(); |
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1310 int cp_index = Bytes::get_native_u2(bcp + 1) + ConstantPool::CPCACHE_INDEX_TAG; |
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1311 Symbol* cname = cpool->klass_name_at(cpool->klass_ref_index_at(cp_index)); |
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1312 Symbol* mname = cpool->name_ref_at(cp_index); |
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1313 |
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1314 if (MethodHandles::has_member_arg(cname, mname)) { |
|
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1315 oop member_name_oop = (oop) member_name; |
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1316 if (java_lang_invoke_DirectMethodHandle::is_instance(member_name_oop)) { |
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1317 // FIXME: remove after j.l.i.InvokerBytecodeGenerator code shape is updated. |
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1318 member_name_oop = java_lang_invoke_DirectMethodHandle::member(member_name_oop); |
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1319 } |
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1320 thread->set_vm_result(member_name_oop); |
|
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1321 } else { |
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1322 thread->set_vm_result(NULL); |
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1323 } |
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1324 IRT_END |
|
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1325 #endif // INCLUDE_JVMTI |