J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1 | /* |
Coleen Phillimore | 4b95622 | 2017-03-15 10:25:37 -0400 | [diff] [blame] | 2 | * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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 | * |
Erik Trimble | ba7c173 | 2010-05-27 19:08:38 -0700 | [diff] [blame] | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 20 | * or visit www.oracle.com if you need additional information or have any |
| 21 | * questions. |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 22 | * |
| 23 | */ |
| 24 | |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 25 | #include "precompiled.hpp" |
Stefan Karlsson | 4913ad5 | 2015-02-13 14:37:35 +0100 | [diff] [blame] | 26 | #include "classfile/javaClasses.inline.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 27 | #include "classfile/systemDictionary.hpp" |
| 28 | #include "classfile/vmSymbols.hpp" |
Bertrand Delsart | bf69556 | 2015-06-23 17:48:34 +0200 | [diff] [blame] | 29 | #include "code/codeCache.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 30 | #include "compiler/compileBroker.hpp" |
Christian Thalinger | 2c2c007 | 2012-11-30 15:23:16 -0800 | [diff] [blame] | 31 | #include "compiler/disassembler.hpp" |
Per Lidén | 4dc240f | 2015-05-13 15:16:06 +0200 | [diff] [blame] | 32 | #include "gc/shared/collectedHeap.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 33 | #include "interpreter/interpreter.hpp" |
| 34 | #include "interpreter/interpreterRuntime.hpp" |
| 35 | #include "interpreter/linkResolver.hpp" |
| 36 | #include "interpreter/templateTable.hpp" |
Rachel Protacio | 7973ef0 | 2015-12-22 16:29:48 -0500 | [diff] [blame] | 37 | #include "logging/log.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 38 | #include "memory/oopFactory.hpp" |
Joseph Provino | 5cef850 | 2016-04-04 12:57:48 -0400 | [diff] [blame] | 39 | #include "memory/resourceArea.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 40 | #include "memory/universe.inline.hpp" |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 41 | #include "oops/constantPool.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 42 | #include "oops/instanceKlass.hpp" |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 43 | #include "oops/methodData.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 44 | #include "oops/objArrayKlass.hpp" |
Stefan Karlsson | 4913ad5 | 2015-02-13 14:37:35 +0100 | [diff] [blame] | 45 | #include "oops/objArrayOop.inline.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 46 | #include "oops/oop.inline.hpp" |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 47 | #include "oops/symbol.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 48 | #include "prims/jvmtiExport.hpp" |
| 49 | #include "prims/nativeLookup.hpp" |
David Holmes | 5f1f448 | 2016-08-21 20:56:37 -0400 | [diff] [blame] | 50 | #include "runtime/atomic.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 51 | #include "runtime/biasedLocking.hpp" |
| 52 | #include "runtime/compilationPolicy.hpp" |
| 53 | #include "runtime/deoptimization.hpp" |
| 54 | #include "runtime/fieldDescriptor.hpp" |
| 55 | #include "runtime/handles.inline.hpp" |
Goetz Lindenmaier | 25f33c0 | 2014-07-04 11:46:01 +0200 | [diff] [blame] | 56 | #include "runtime/icache.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 57 | #include "runtime/interfaceSupport.hpp" |
| 58 | #include "runtime/java.hpp" |
| 59 | #include "runtime/jfieldIDWorkaround.hpp" |
| 60 | #include "runtime/osThread.hpp" |
| 61 | #include "runtime/sharedRuntime.hpp" |
| 62 | #include "runtime/stubRoutines.hpp" |
| 63 | #include "runtime/synchronizer.hpp" |
| 64 | #include "runtime/threadCritical.hpp" |
Stefan Karlsson | a18f1c2 | 2017-07-05 11:33:17 +0200 | [diff] [blame] | 65 | #include "utilities/align.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 66 | #include "utilities/events.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 67 | #ifdef COMPILER2 |
| 68 | #include "opto/runtime.hpp" |
| 69 | #endif |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 70 | |
| 71 | class UnlockFlagSaver { |
| 72 | private: |
| 73 | JavaThread* _thread; |
| 74 | bool _do_not_unlock; |
| 75 | public: |
| 76 | UnlockFlagSaver(JavaThread* t) { |
| 77 | _thread = t; |
| 78 | _do_not_unlock = t->do_not_unlock_if_synchronized(); |
| 79 | t->set_do_not_unlock_if_synchronized(false); |
| 80 | } |
| 81 | ~UnlockFlagSaver() { |
| 82 | _thread->set_do_not_unlock_if_synchronized(_do_not_unlock); |
| 83 | } |
| 84 | }; |
| 85 | |
| 86 | //------------------------------------------------------------------------------------------------------------------------ |
| 87 | // State accessors |
| 88 | |
| 89 | void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread *thread) { |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 90 | last_frame(thread).interpreter_frame_set_bcp(bcp); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 91 | if (ProfileInterpreter) { |
| 92 | // ProfileTraps uses MDOs independently of ProfileInterpreter. |
| 93 | // That is why we must check both ProfileInterpreter and mdo != NULL. |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 94 | MethodData* mdo = last_frame(thread).interpreter_frame_method()->method_data(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 95 | if (mdo != NULL) { |
| 96 | NEEDS_CLEANUP; |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 97 | last_frame(thread).interpreter_frame_set_mdp(mdo->bci_to_dp(last_frame(thread).interpreter_frame_bci())); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 98 | } |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | //------------------------------------------------------------------------------------------------------------------------ |
| 103 | // Constants |
| 104 | |
| 105 | |
| 106 | IRT_ENTRY(void, InterpreterRuntime::ldc(JavaThread* thread, bool wide)) |
| 107 | // access constant pool |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 108 | ConstantPool* pool = method(thread)->constants(); |
| 109 | int index = wide ? get_index_u2(thread, Bytecodes::_ldc_w) : get_index_u1(thread, Bytecodes::_ldc); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 110 | constantTag tag = pool->tag_at(index); |
| 111 | |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 112 | assert (tag.is_unresolved_klass() || tag.is_klass(), "wrong ldc call"); |
| 113 | Klass* klass = pool->klass_at(index, CHECK); |
Tom Rodriguez | 6e8a263 | 2011-03-18 16:00:34 -0700 | [diff] [blame] | 114 | oop java_class = klass->java_mirror(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 115 | thread->set_vm_result(java_class); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 116 | IRT_END |
| 117 | |
John R Rose | 1f4cfb0 | 2010-06-09 18:50:45 -0700 | [diff] [blame] | 118 | IRT_ENTRY(void, InterpreterRuntime::resolve_ldc(JavaThread* thread, Bytecodes::Code bytecode)) { |
| 119 | assert(bytecode == Bytecodes::_fast_aldc || |
| 120 | bytecode == Bytecodes::_fast_aldc_w, "wrong bc"); |
| 121 | ResourceMark rm(thread); |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 122 | methodHandle m (thread, method(thread)); |
| 123 | Bytecode_loadconstant ldc(m, bci(thread)); |
Tom Rodriguez | f6d95d9 | 2011-05-25 16:04:09 -0700 | [diff] [blame] | 124 | oop result = ldc.resolve_constant(CHECK); |
| 125 | #ifdef ASSERT |
| 126 | { |
| 127 | // The bytecode wrappers aren't GC-safe so construct a new one |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 128 | Bytecode_loadconstant ldc2(m, bci(thread)); |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 129 | oop coop = m->constants()->resolved_references()->obj_at(ldc2.cache_index()); |
| 130 | assert(result == coop, "expected result for assembly code"); |
Tom Rodriguez | f6d95d9 | 2011-05-25 16:04:09 -0700 | [diff] [blame] | 131 | } |
| 132 | #endif |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 133 | thread->set_vm_result(result); |
John R Rose | 1f4cfb0 | 2010-06-09 18:50:45 -0700 | [diff] [blame] | 134 | } |
| 135 | IRT_END |
| 136 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 137 | |
| 138 | //------------------------------------------------------------------------------------------------------------------------ |
| 139 | // Allocation |
| 140 | |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 141 | IRT_ENTRY(void, InterpreterRuntime::_new(JavaThread* thread, ConstantPool* pool, int index)) |
Coleen Phillimore | 4b95622 | 2017-03-15 10:25:37 -0400 | [diff] [blame] | 142 | Klass* k = pool->klass_at(index, CHECK); |
| 143 | InstanceKlass* klass = InstanceKlass::cast(k); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 144 | |
| 145 | // Make sure we are not instantiating an abstract klass |
| 146 | klass->check_valid_for_instantiation(true, CHECK); |
| 147 | |
| 148 | // Make sure klass is initialized |
| 149 | klass->initialize(CHECK); |
| 150 | |
| 151 | // At this point the class may not be fully initialized |
| 152 | // because of recursive initialization. If it is fully |
| 153 | // initialized & has_finalized is not set, we rewrite |
| 154 | // it into its fast version (Note: no locking is needed |
| 155 | // here since this is an atomic byte write and can be |
| 156 | // done more than once). |
| 157 | // |
| 158 | // Note: In case of classes with has_finalized we don't |
| 159 | // rewrite since that saves us an extra check in |
| 160 | // the fast version which then would call the |
| 161 | // slow version anyway (and do a call back into |
| 162 | // Java). |
| 163 | // If we have a breakpoint, then we don't rewrite |
| 164 | // because the _breakpoint bytecode would be lost. |
| 165 | oop obj = klass->allocate_instance(CHECK); |
| 166 | thread->set_vm_result(obj); |
| 167 | IRT_END |
| 168 | |
| 169 | |
| 170 | IRT_ENTRY(void, InterpreterRuntime::newarray(JavaThread* thread, BasicType type, jint size)) |
| 171 | oop obj = oopFactory::new_typeArray(type, size, CHECK); |
| 172 | thread->set_vm_result(obj); |
| 173 | IRT_END |
| 174 | |
| 175 | |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 176 | IRT_ENTRY(void, InterpreterRuntime::anewarray(JavaThread* thread, ConstantPool* pool, int index, jint size)) |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 177 | Klass* klass = pool->klass_at(index, CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 178 | objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK); |
| 179 | thread->set_vm_result(obj); |
| 180 | IRT_END |
| 181 | |
| 182 | |
| 183 | IRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* thread, jint* first_size_address)) |
| 184 | // We may want to pass in more arguments - could make this slightly faster |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 185 | ConstantPool* constants = method(thread)->constants(); |
| 186 | int i = get_index_u2(thread, Bytecodes::_multianewarray); |
| 187 | Klass* klass = constants->klass_at(i, CHECK); |
| 188 | int nof_dims = number_of_dimensions(thread); |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 189 | assert(klass->is_klass(), "not a class"); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 190 | assert(nof_dims >= 1, "multianewarray rank must be nonzero"); |
| 191 | |
| 192 | // We must create an array of jints to pass to multi_allocate. |
| 193 | ResourceMark rm(thread); |
| 194 | const int small_dims = 10; |
| 195 | jint dim_array[small_dims]; |
| 196 | jint *dims = &dim_array[0]; |
| 197 | if (nof_dims > small_dims) { |
| 198 | dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims); |
| 199 | } |
| 200 | for (int index = 0; index < nof_dims; index++) { |
| 201 | // offset from first_size_address is addressed as local[index] |
| 202 | int n = Interpreter::local_offset_in_bytes(index)/jintSize; |
| 203 | dims[index] = first_size_address[n]; |
| 204 | } |
Coleen Phillimore | 28047d6 | 2012-09-29 06:40:00 -0400 | [diff] [blame] | 205 | oop obj = ArrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 206 | thread->set_vm_result(obj); |
| 207 | IRT_END |
| 208 | |
| 209 | |
| 210 | IRT_ENTRY(void, InterpreterRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) |
Coleen Phillimore | 3d6d1ec | 2017-08-23 14:52:55 -0400 | [diff] [blame] | 211 | assert(oopDesc::is_oop(obj), "must be a valid oop"); |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 212 | assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); |
| 213 | InstanceKlass::register_finalizer(instanceOop(obj), CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 214 | IRT_END |
| 215 | |
| 216 | |
| 217 | // Quicken instance-of and check-cast bytecodes |
| 218 | IRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* thread)) |
| 219 | // Force resolving; quicken the bytecode |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 220 | int which = get_index_u2(thread, Bytecodes::_checkcast); |
| 221 | ConstantPool* cpool = method(thread)->constants(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 222 | // We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded |
| 223 | // program we might have seen an unquick'd bytecode in the interpreter but have another |
| 224 | // thread quicken the bytecode before we get here. |
| 225 | // assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" ); |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 226 | Klass* klass = cpool->klass_at(which, CHECK); |
| 227 | thread->set_vm_result_2(klass); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 228 | IRT_END |
| 229 | |
| 230 | |
| 231 | //------------------------------------------------------------------------------------------------------------------------ |
| 232 | // Exceptions |
| 233 | |
Goetz Lindenmaier | 0732a73 | 2013-09-15 15:28:58 +0200 | [diff] [blame] | 234 | void InterpreterRuntime::note_trap_inner(JavaThread* thread, int reason, |
Coleen Phillimore | af5c6ee | 2017-07-27 18:06:41 -0400 | [diff] [blame] | 235 | const methodHandle& trap_method, int trap_bci, TRAPS) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 236 | if (trap_method.not_null()) { |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 237 | MethodData* trap_mdo = trap_method->method_data(); |
| 238 | if (trap_mdo == NULL) { |
| 239 | Method::build_interpreter_method_data(trap_method, THREAD); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 240 | if (HAS_PENDING_EXCEPTION) { |
Goetz Lindenmaier | 0732a73 | 2013-09-15 15:28:58 +0200 | [diff] [blame] | 241 | assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), |
| 242 | "we expect only an OOM error here"); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 243 | CLEAR_PENDING_EXCEPTION; |
| 244 | } |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 245 | trap_mdo = trap_method->method_data(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 246 | // and fall through... |
| 247 | } |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 248 | if (trap_mdo != NULL) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 249 | // Update per-method count of trap events. The interpreter |
| 250 | // is updating the MDO to simulate the effect of compiler traps. |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 251 | Deoptimization::update_method_data_from_interpreter(trap_mdo, trap_bci, reason); |
| 252 | } |
| 253 | } |
| 254 | } |
| 255 | |
Goetz Lindenmaier | 0732a73 | 2013-09-15 15:28:58 +0200 | [diff] [blame] | 256 | // Assume the compiler is (or will be) interested in this event. |
| 257 | // If necessary, create an MDO to hold the information, and record it. |
| 258 | void InterpreterRuntime::note_trap(JavaThread* thread, int reason, TRAPS) { |
| 259 | assert(ProfileTraps, "call me only if profiling"); |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 260 | methodHandle trap_method(thread, method(thread)); |
| 261 | int trap_bci = trap_method->bci_from(bcp(thread)); |
Goetz Lindenmaier | 0732a73 | 2013-09-15 15:28:58 +0200 | [diff] [blame] | 262 | note_trap_inner(thread, reason, trap_method, trap_bci, THREAD); |
| 263 | } |
| 264 | |
| 265 | #ifdef CC_INTERP |
| 266 | // As legacy note_trap, but we have more arguments. |
| 267 | IRT_ENTRY(void, InterpreterRuntime::note_trap(JavaThread* thread, int reason, Method *method, int trap_bci)) |
| 268 | methodHandle trap_method(method); |
| 269 | note_trap_inner(thread, reason, trap_method, trap_bci, THREAD); |
| 270 | IRT_END |
| 271 | |
| 272 | // Class Deoptimization is not visible in BytecodeInterpreter, so we need a wrapper |
| 273 | // for each exception. |
| 274 | void InterpreterRuntime::note_nullCheck_trap(JavaThread* thread, Method *method, int trap_bci) |
| 275 | { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_null_check, method, trap_bci); } |
| 276 | void InterpreterRuntime::note_div0Check_trap(JavaThread* thread, Method *method, int trap_bci) |
| 277 | { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_div0_check, method, trap_bci); } |
| 278 | void InterpreterRuntime::note_rangeCheck_trap(JavaThread* thread, Method *method, int trap_bci) |
| 279 | { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_range_check, method, trap_bci); } |
| 280 | void InterpreterRuntime::note_classCheck_trap(JavaThread* thread, Method *method, int trap_bci) |
| 281 | { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_class_check, method, trap_bci); } |
| 282 | void InterpreterRuntime::note_arrayCheck_trap(JavaThread* thread, Method *method, int trap_bci) |
| 283 | { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_array_check, method, trap_bci); } |
| 284 | #endif // CC_INTERP |
| 285 | |
| 286 | |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 287 | static Handle get_preinitialized_exception(Klass* k, TRAPS) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 288 | // get klass |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 289 | InstanceKlass* klass = InstanceKlass::cast(k); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 290 | assert(klass->is_initialized(), |
| 291 | "this klass should have been initialized during VM initialization"); |
| 292 | // create instance - do not call constructor since we may have no |
| 293 | // (java) stack space left (should assert constructor is empty) |
| 294 | Handle exception; |
| 295 | oop exception_oop = klass->allocate_instance(CHECK_(exception)); |
| 296 | exception = Handle(THREAD, exception_oop); |
| 297 | if (StackTraceInThrowable) { |
| 298 | java_lang_Throwable::fill_in_stack_trace(exception); |
| 299 | } |
| 300 | return exception; |
| 301 | } |
| 302 | |
| 303 | // Special handling for stack overflow: since we don't have any (java) stack |
| 304 | // space left we use the pre-allocated & pre-initialized StackOverflowError |
| 305 | // klass to create an stack overflow error instance. We do not call its |
| 306 | // constructor for the same reason (it is empty, anyway). |
| 307 | IRT_ENTRY(void, InterpreterRuntime::throw_StackOverflowError(JavaThread* thread)) |
| 308 | Handle exception = get_preinitialized_exception( |
| 309 | SystemDictionary::StackOverflowError_klass(), |
| 310 | CHECK); |
Coleen Phillimore | 9e5e7f9 | 2015-06-09 10:26:25 -0400 | [diff] [blame] | 311 | // Increment counter for hs_err file reporting |
| 312 | Atomic::inc(&Exceptions::_stack_overflow_errors); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 313 | THROW_HANDLE(exception); |
| 314 | IRT_END |
| 315 | |
Frederic Parain | 8902072 | 2016-04-08 00:38:00 -0700 | [diff] [blame] | 316 | IRT_ENTRY(void, InterpreterRuntime::throw_delayed_StackOverflowError(JavaThread* thread)) |
Frederic Parain | ef800bd | 2015-12-11 09:07:07 -0800 | [diff] [blame] | 317 | Handle exception = get_preinitialized_exception( |
| 318 | SystemDictionary::StackOverflowError_klass(), |
| 319 | CHECK); |
| 320 | java_lang_Throwable::set_message(exception(), |
| 321 | Universe::delayed_stack_overflow_error_message()); |
| 322 | // Increment counter for hs_err file reporting |
| 323 | Atomic::inc(&Exceptions::_stack_overflow_errors); |
| 324 | THROW_HANDLE(exception); |
| 325 | IRT_END |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 326 | |
| 327 | IRT_ENTRY(void, InterpreterRuntime::create_exception(JavaThread* thread, char* name, char* message)) |
| 328 | // lookup exception klass |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 329 | TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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 |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 338 | Handle exception = Exceptions::new_exception(thread, s, message); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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); |
Harold Seigel | 4aad9b7 | 2012-11-12 16:15:05 -0500 | [diff] [blame] | 345 | const char* klass_name = obj->klass()->external_name(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 346 | // lookup exception klass |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 347 | TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 348 | if (ProfileTraps) { |
| 349 | note_trap(thread, Deoptimization::Reason_class_check, CHECK); |
| 350 | } |
| 351 | // create exception, with klass name as detail message |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 352 | Handle exception = Exceptions::new_exception(thread, s, klass_name); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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 |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 360 | TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 361 | if (ProfileTraps) { |
| 362 | note_trap(thread, Deoptimization::Reason_range_check, CHECK); |
| 363 | } |
| 364 | // create exception |
| 365 | sprintf(message, "%d", index); |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 366 | THROW_MSG(s, message); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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( |
Alan Bateman | f30fc1c | 2016-03-17 19:04:01 +0000 | [diff] [blame] | 374 | thread, obj->klass()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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); |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 395 | methodHandle h_method (thread, method(thread)); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 396 | constantPoolHandle h_constants(thread, h_method->constants()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 397 | bool should_repeat; |
| 398 | int handler_bci; |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 399 | int current_bci = bci(thread); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 400 | |
Roland Westrelin | 15dcd41 | 2014-11-25 17:33:59 +0100 | [diff] [blame] | 401 | if (thread->frames_to_pop_failed_realloc() > 0) { |
| 402 | // Allocation of scalar replaced object used in this frame |
| 403 | // failed. Unconditionally pop the frame. |
| 404 | thread->dec_frames_to_pop_failed_realloc(); |
| 405 | thread->set_vm_result(h_exception()); |
| 406 | // If the method is synchronized we already unlocked the monitor |
| 407 | // during deoptimization so the interpreter needs to skip it when |
| 408 | // the frame is popped. |
| 409 | thread->set_do_not_unlock_if_synchronized(true); |
Severin Gehwolf | 396b5aa | 2014-12-15 09:36:46 +0100 | [diff] [blame] | 410 | #ifdef CC_INTERP |
| 411 | return (address) -1; |
| 412 | #else |
Roland Westrelin | 15dcd41 | 2014-11-25 17:33:59 +0100 | [diff] [blame] | 413 | return Interpreter::remove_activation_entry(); |
Severin Gehwolf | 396b5aa | 2014-12-15 09:36:46 +0100 | [diff] [blame] | 414 | #endif |
Roland Westrelin | 15dcd41 | 2014-11-25 17:33:59 +0100 | [diff] [blame] | 415 | } |
| 416 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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"); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 438 | // Check that exception is a subclass of Throwable, otherwise we have a VerifyError |
Tom Rodriguez | 98449cf | 2010-01-06 14:22:39 -0800 | [diff] [blame] | 439 | if (!(h_exception->is_a(SystemDictionary::Throwable_klass()))) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 440 | if (ExitVMOnVerifyError) vm_exit(-1); |
| 441 | ShouldNotReachHere(); |
| 442 | } |
| 443 | #endif |
| 444 | |
| 445 | // tracing |
Rachel Protacio | 7973ef0 | 2015-12-22 16:29:48 -0500 | [diff] [blame] | 446 | if (log_is_enabled(Info, exceptions)) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 447 | ResourceMark rm(thread); |
Rachel Protacio | 7973ef0 | 2015-12-22 16:29:48 -0500 | [diff] [blame] | 448 | stringStream tempst; |
Rachel Protacio | f4555ca | 2016-01-12 12:35:08 -0500 | [diff] [blame] | 449 | tempst.print("interpreter method <%s>\n" |
Rachel Protacio | 7973ef0 | 2015-12-22 16:29:48 -0500 | [diff] [blame] | 450 | " at bci %d for thread " INTPTR_FORMAT, |
| 451 | h_method->print_value_string(), current_bci, p2i(thread)); |
Rachel Protacio | f4555ca | 2016-01-12 12:35:08 -0500 | [diff] [blame] | 452 | Exceptions::log_exception(h_exception, tempst); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 453 | } |
| 454 | // Don't go paging in something which won't be used. |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 455 | // else if (extable->length() == 0) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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 |
Poonam Bajaj | a25ce80 | 2015-10-14 15:36:41 -0700 | [diff] [blame] | 461 | Exceptions::debug_check_abort(h_exception); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 462 | |
| 463 | // exception handler lookup |
Coleen Phillimore | 4b95622 | 2017-03-15 10:25:37 -0400 | [diff] [blame] | 464 | Klass* klass = h_exception->klass(); |
| 465 | handler_bci = Method::fast_exception_handler_bci_for(h_method, klass, current_bci, THREAD); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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 | |
Christian Thalinger | 16526e0 | 2015-10-08 12:49:30 -1000 | [diff] [blame] | 482 | #if INCLUDE_JVMCI |
Christian Thalinger | a38ea49 | 2015-11-04 07:23:23 -1000 | [diff] [blame] | 483 | if (EnableJVMCI && h_method->method_data() != NULL) { |
Christian Thalinger | 16526e0 | 2015-10-08 12:49:30 -1000 | [diff] [blame] | 484 | ResourceMark rm(thread); |
| 485 | ProfileData* pdata = h_method->method_data()->allocate_bci_to_data(current_bci, NULL); |
| 486 | if (pdata != NULL && pdata->is_BitData()) { |
| 487 | BitData* bit_data = (BitData*) pdata; |
| 488 | bit_data->set_exception_seen(); |
| 489 | } |
| 490 | } |
| 491 | #endif |
| 492 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 493 | // notify JVMTI of an exception throw; JVMTI will detect if this is a first |
| 494 | // time throw or a stack unwinding throw and accordingly notify the debugger |
Tom Deneau | f23b68b | 2010-02-01 17:35:05 -0700 | [diff] [blame] | 495 | if (JvmtiExport::can_post_on_exceptions()) { |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 496 | JvmtiExport::post_exception_throw(thread, h_method(), bcp(thread), h_exception()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 497 | } |
| 498 | |
| 499 | #ifdef CC_INTERP |
| 500 | address continuation = (address)(intptr_t) handler_bci; |
| 501 | #else |
| 502 | address continuation = NULL; |
| 503 | #endif |
| 504 | address handler_pc = NULL; |
| 505 | if (handler_bci < 0 || !thread->reguard_stack((address) &continuation)) { |
| 506 | // Forward exception to callee (leaving bci/bcp untouched) because (a) no |
| 507 | // handler in this method, or (b) after a stack overflow there is not yet |
| 508 | // enough stack space available to reprotect the stack. |
| 509 | #ifndef CC_INTERP |
| 510 | continuation = Interpreter::remove_activation_entry(); |
| 511 | #endif |
Chris Plummer | fbe0498 | 2016-03-30 09:52:02 -0700 | [diff] [blame] | 512 | #if COMPILER2_OR_JVMCI |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 513 | // Count this for compilation purposes |
Jiangli Zhou | 5637065 | 2013-04-09 17:17:41 -0400 | [diff] [blame] | 514 | h_method->interpreter_throwout_increment(THREAD); |
Chris Plummer | fbe0498 | 2016-03-30 09:52:02 -0700 | [diff] [blame] | 515 | #endif |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 516 | } else { |
| 517 | // handler in this method => change bci/bcp to handler bci/bcp and continue there |
| 518 | handler_pc = h_method->code_base() + handler_bci; |
| 519 | #ifndef CC_INTERP |
| 520 | set_bcp_and_mdp(handler_pc, thread); |
| 521 | continuation = Interpreter::dispatch_table(vtos)[*handler_pc]; |
| 522 | #endif |
| 523 | } |
| 524 | // notify debugger of an exception catch |
| 525 | // (this is good for exceptions caught in native methods as well) |
Tom Deneau | f23b68b | 2010-02-01 17:35:05 -0700 | [diff] [blame] | 526 | if (JvmtiExport::can_post_on_exceptions()) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 527 | JvmtiExport::notice_unwind_due_to_exception(thread, h_method(), handler_pc, h_exception(), (handler_pc != NULL)); |
| 528 | } |
| 529 | |
| 530 | thread->set_vm_result(h_exception()); |
| 531 | return continuation; |
| 532 | IRT_END |
| 533 | |
| 534 | |
| 535 | IRT_ENTRY(void, InterpreterRuntime::throw_pending_exception(JavaThread* thread)) |
| 536 | assert(thread->has_pending_exception(), "must only ne called if there's an exception pending"); |
| 537 | // nothing to do - eventually we should remove this code entirely (see comments @ call sites) |
| 538 | IRT_END |
| 539 | |
| 540 | |
| 541 | IRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodError(JavaThread* thread)) |
| 542 | THROW(vmSymbols::java_lang_AbstractMethodError()); |
| 543 | IRT_END |
| 544 | |
| 545 | |
| 546 | IRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) |
| 547 | THROW(vmSymbols::java_lang_IncompatibleClassChangeError()); |
| 548 | IRT_END |
| 549 | |
| 550 | |
| 551 | //------------------------------------------------------------------------------------------------------------------------ |
| 552 | // Fields |
| 553 | // |
| 554 | |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 555 | void InterpreterRuntime::resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode) { |
| 556 | Thread* THREAD = thread; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 557 | // resolve field |
David Chase | 222c735 | 2013-09-13 22:38:02 -0400 | [diff] [blame] | 558 | fieldDescriptor info; |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 559 | constantPoolHandle pool(thread, method(thread)->constants()); |
| 560 | methodHandle m(thread, method(thread)); |
Yumin Qi | 3e6cf09 | 2015-03-25 15:18:37 -0700 | [diff] [blame] | 561 | bool is_put = (bytecode == Bytecodes::_putfield || bytecode == Bytecodes::_nofast_putfield || |
| 562 | bytecode == Bytecodes::_putstatic); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 563 | bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic); |
| 564 | |
| 565 | { |
| 566 | JvmtiHideSingleStepping jhss(thread); |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 567 | LinkResolver::resolve_field_access(info, pool, get_index_u2_cpcache(thread, bytecode), |
Zoltan Majo | cdc4369 | 2016-06-15 14:27:58 +0200 | [diff] [blame] | 568 | m, bytecode, CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 569 | } // end JvmtiHideSingleStepping |
| 570 | |
| 571 | // check if link resolution caused cpCache to be updated |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 572 | ConstantPoolCacheEntry* cp_cache_entry = cache_entry(thread); |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 573 | if (cp_cache_entry->is_resolved(bytecode)) return; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 574 | |
| 575 | // compute auxiliary field attributes |
| 576 | TosState state = as_TosState(info.field_type()); |
| 577 | |
Zoltan Majo | 97ed41a | 2016-08-29 07:32:37 +0200 | [diff] [blame] | 578 | // Resolution of put instructions on final fields is delayed. That is required so that |
| 579 | // exceptions are thrown at the correct place (when the instruction is actually invoked). |
Zoltan Majo | e0e3bd5 | 2016-07-06 11:16:36 +0200 | [diff] [blame] | 580 | // If we do not resolve an instruction in the current pass, leaving the put_code |
| 581 | // set to zero will cause the next put instruction to the same field to reresolve. |
Zoltan Majo | 97ed41a | 2016-08-29 07:32:37 +0200 | [diff] [blame] | 582 | |
| 583 | // Resolution of put instructions to final instance fields with invalid updates (i.e., |
| 584 | // to final instance fields with updates originating from a method different than <init>) |
| 585 | // is inhibited. A putfield instruction targeting an instance final field must throw |
| 586 | // an IllegalAccessError if the instruction is not in an instance |
| 587 | // initializer method <init>. If resolution were not inhibited, a putfield |
| 588 | // in an initializer method could be resolved in the initializer. Subsequent |
| 589 | // putfield instructions to the same field would then use cached information. |
| 590 | // As a result, those instructions would not pass through the VM. That is, |
| 591 | // checks in resolve_field_access() would not be executed for those instructions |
| 592 | // and the required IllegalAccessError would not be thrown. |
Zoltan Majo | e0e3bd5 | 2016-07-06 11:16:36 +0200 | [diff] [blame] | 593 | // |
| 594 | // Also, we need to delay resolving getstatic and putstatic instructions until the |
| 595 | // class is initialized. This is required so that access to the static |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 596 | // field will call the initialization function every time until the class |
| 597 | // is completely initialized ala. in 2.17.5 in JVM Specification. |
David Chase | 222c735 | 2013-09-13 22:38:02 -0400 | [diff] [blame] | 598 | InstanceKlass* klass = InstanceKlass::cast(info.field_holder()); |
Zoltan Majo | 97ed41a | 2016-08-29 07:32:37 +0200 | [diff] [blame] | 599 | bool uninitialized_static = is_static && !klass->is_initialized(); |
| 600 | bool has_initialized_final_update = info.field_holder()->major_version() >= 53 && |
| 601 | info.has_initialized_final_update(); |
| 602 | assert(!(has_initialized_final_update && !info.access_flags().is_final()), "Fields with initialized final updates must be final"); |
Zoltan Majo | e0e3bd5 | 2016-07-06 11:16:36 +0200 | [diff] [blame] | 603 | |
| 604 | Bytecodes::Code get_code = (Bytecodes::Code)0; |
Zoltan Majo | 97ed41a | 2016-08-29 07:32:37 +0200 | [diff] [blame] | 605 | Bytecodes::Code put_code = (Bytecodes::Code)0; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 606 | if (!uninitialized_static) { |
| 607 | get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield); |
Zoltan Majo | 97ed41a | 2016-08-29 07:32:37 +0200 | [diff] [blame] | 608 | if ((is_put && !has_initialized_final_update) || !info.access_flags().is_final()) { |
| 609 | put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield); |
| 610 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 611 | } |
| 612 | |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 613 | cp_cache_entry->set_field( |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 614 | get_code, |
| 615 | put_code, |
David Chase | 222c735 | 2013-09-13 22:38:02 -0400 | [diff] [blame] | 616 | info.field_holder(), |
| 617 | info.index(), |
| 618 | info.offset(), |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 619 | state, |
| 620 | info.access_flags().is_final(), |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 621 | info.access_flags().is_volatile(), |
| 622 | pool->pool_holder() |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 623 | ); |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 624 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 625 | |
| 626 | |
| 627 | //------------------------------------------------------------------------------------------------------------------------ |
| 628 | // Synchronization |
| 629 | // |
| 630 | // The interpreter's synchronization code is factored out so that it can |
| 631 | // be shared by method invocation and synchronized blocks. |
| 632 | //%note synchronization_3 |
| 633 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 634 | //%note monitor_1 |
| 635 | IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem)) |
| 636 | #ifdef ASSERT |
| 637 | thread->last_frame().interpreter_frame_verify_monitor(elem); |
| 638 | #endif |
| 639 | if (PrintBiasedLockingStatistics) { |
| 640 | Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); |
| 641 | } |
| 642 | Handle h_obj(thread, elem->obj()); |
| 643 | assert(Universe::heap()->is_in_reserved_or_null(h_obj()), |
| 644 | "must be NULL or an object"); |
| 645 | if (UseBiasedLocking) { |
| 646 | // Retry fast entry if bias is revoked to avoid unnecessary inflation |
| 647 | ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK); |
| 648 | } else { |
| 649 | ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK); |
| 650 | } |
| 651 | assert(Universe::heap()->is_in_reserved_or_null(elem->obj()), |
| 652 | "must be NULL or an object"); |
| 653 | #ifdef ASSERT |
| 654 | thread->last_frame().interpreter_frame_verify_monitor(elem); |
| 655 | #endif |
| 656 | IRT_END |
| 657 | |
| 658 | |
| 659 | //%note monitor_1 |
| 660 | IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem)) |
| 661 | #ifdef ASSERT |
| 662 | thread->last_frame().interpreter_frame_verify_monitor(elem); |
| 663 | #endif |
| 664 | Handle h_obj(thread, elem->obj()); |
| 665 | assert(Universe::heap()->is_in_reserved_or_null(h_obj()), |
| 666 | "must be NULL or an object"); |
| 667 | if (elem == NULL || h_obj()->is_unlocked()) { |
| 668 | THROW(vmSymbols::java_lang_IllegalMonitorStateException()); |
| 669 | } |
| 670 | ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread); |
| 671 | // Free entry. This must be done here, since a pending exception might be installed on |
| 672 | // exit. If it is not cleared, the exception handling code will try to unlock the monitor again. |
| 673 | elem->set_obj(NULL); |
| 674 | #ifdef ASSERT |
| 675 | thread->last_frame().interpreter_frame_verify_monitor(elem); |
| 676 | #endif |
| 677 | IRT_END |
| 678 | |
| 679 | |
| 680 | IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread)) |
| 681 | THROW(vmSymbols::java_lang_IllegalMonitorStateException()); |
| 682 | IRT_END |
| 683 | |
| 684 | |
| 685 | IRT_ENTRY(void, InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* thread)) |
| 686 | // Returns an illegal exception to install into the current thread. The |
| 687 | // pending_exception flag is cleared so normal exception handling does not |
| 688 | // trigger. Any current installed exception will be overwritten. This |
| 689 | // method will be called during an exception unwind. |
| 690 | |
| 691 | assert(!HAS_PENDING_EXCEPTION, "no pending exception"); |
| 692 | Handle exception(thread, thread->vm_result()); |
| 693 | assert(exception() != NULL, "vm result should be set"); |
| 694 | thread->set_vm_result(NULL); // clear vm result before continuing (may cause memory leaks and assert failures) |
Tom Rodriguez | 98449cf | 2010-01-06 14:22:39 -0800 | [diff] [blame] | 695 | if (!exception->is_a(SystemDictionary::ThreadDeath_klass())) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 696 | exception = get_preinitialized_exception( |
| 697 | SystemDictionary::IllegalMonitorStateException_klass(), |
| 698 | CATCH); |
| 699 | } |
| 700 | thread->set_vm_result(exception()); |
| 701 | IRT_END |
| 702 | |
| 703 | |
| 704 | //------------------------------------------------------------------------------------------------------------------------ |
| 705 | // Invokes |
| 706 | |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 707 | IRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, Method* method, address bcp)) |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 708 | return method->orig_bytecode_at(method->bci_from(bcp)); |
| 709 | IRT_END |
| 710 | |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 711 | IRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* thread, Method* method, address bcp, Bytecodes::Code new_code)) |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 712 | method->set_orig_bytecode_at(method->bci_from(bcp), new_code); |
| 713 | IRT_END |
| 714 | |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 715 | IRT_ENTRY(void, InterpreterRuntime::_breakpoint(JavaThread* thread, Method* method, address bcp)) |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 716 | JvmtiExport::post_raw_breakpoint(thread, method, bcp); |
| 717 | IRT_END |
| 718 | |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 719 | void InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode) { |
| 720 | Thread* THREAD = thread; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 721 | // extract receiver from the outgoing argument list if necessary |
| 722 | Handle receiver(thread, NULL); |
Coleen Phillimore | 1457155 | 2016-12-01 14:21:31 -0500 | [diff] [blame] | 723 | if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface || |
| 724 | bytecode == Bytecodes::_invokespecial) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 725 | ResourceMark rm(thread); |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 726 | methodHandle m (thread, method(thread)); |
| 727 | Bytecode_invoke call(m, bci(thread)); |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 728 | Symbol* signature = call.signature(); |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 729 | receiver = Handle(thread, |
| 730 | thread->last_frame().interpreter_callee_receiver(signature)); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 731 | assert(Universe::heap()->is_in_reserved_or_null(receiver()), |
| 732 | "sanity check"); |
| 733 | assert(receiver.is_null() || |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 734 | !Universe::heap()->is_in_reserved(receiver->klass()), |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 735 | "sanity check"); |
| 736 | } |
| 737 | |
| 738 | // resolve method |
| 739 | CallInfo info; |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 740 | constantPoolHandle pool(thread, method(thread)->constants()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 741 | |
| 742 | { |
| 743 | JvmtiHideSingleStepping jhss(thread); |
| 744 | LinkResolver::resolve_invoke(info, receiver, pool, |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 745 | get_index_u2_cpcache(thread, bytecode), bytecode, |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 746 | CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 747 | if (JvmtiExport::can_hotswap_or_post_breakpoint()) { |
| 748 | int retry_count = 0; |
| 749 | while (info.resolved_method()->is_old()) { |
| 750 | // It is very unlikely that method is redefined more than 100 times |
| 751 | // in the middle of resolve. If it is looping here more than 100 times |
| 752 | // means then there could be a bug here. |
| 753 | guarantee((retry_count++ < 100), |
| 754 | "Could not resolve to latest version of redefined method"); |
| 755 | // method is redefined in the middle of resolve so re-try. |
| 756 | LinkResolver::resolve_invoke(info, receiver, pool, |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 757 | get_index_u2_cpcache(thread, bytecode), bytecode, |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 758 | CHECK); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 759 | } |
| 760 | } |
| 761 | } // end JvmtiHideSingleStepping |
| 762 | |
| 763 | // check if link resolution caused cpCache to be updated |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 764 | ConstantPoolCacheEntry* cp_cache_entry = cache_entry(thread); |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 765 | if (cp_cache_entry->is_resolved(bytecode)) return; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 766 | |
David Chase | 222c735 | 2013-09-13 22:38:02 -0400 | [diff] [blame] | 767 | #ifdef ASSERT |
| 768 | if (bytecode == Bytecodes::_invokeinterface) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 769 | if (info.resolved_method()->method_holder() == |
Tom Rodriguez | 98449cf | 2010-01-06 14:22:39 -0800 | [diff] [blame] | 770 | SystemDictionary::Object_klass()) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 771 | // NOTE: THIS IS A FIX FOR A CORNER CASE in the JVM spec |
David Chase | 222c735 | 2013-09-13 22:38:02 -0400 | [diff] [blame] | 772 | // (see also CallInfo::set_interface for details) |
| 773 | assert(info.call_kind() == CallInfo::vtable_call || |
| 774 | info.call_kind() == CallInfo::direct_call, ""); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 775 | methodHandle rm = info.resolved_method(); |
| 776 | assert(rm->is_final() || info.has_vtable_index(), |
| 777 | "should have been set already"); |
David Chase | 222c735 | 2013-09-13 22:38:02 -0400 | [diff] [blame] | 778 | } else if (!info.resolved_method()->has_itable_index()) { |
| 779 | // Resolved something like CharSequence.toString. Use vtable not itable. |
| 780 | assert(info.call_kind() != CallInfo::itable_call, ""); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 781 | } else { |
| 782 | // Setup itable entry |
David Chase | 222c735 | 2013-09-13 22:38:02 -0400 | [diff] [blame] | 783 | assert(info.call_kind() == CallInfo::itable_call, ""); |
| 784 | int index = info.resolved_method()->itable_index(); |
| 785 | assert(info.itable_index() == index, ""); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 786 | } |
Coleen Phillimore | 1457155 | 2016-12-01 14:21:31 -0500 | [diff] [blame] | 787 | } else if (bytecode == Bytecodes::_invokespecial) { |
| 788 | assert(info.call_kind() == CallInfo::direct_call, "must be direct call"); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 789 | } else { |
David Chase | 222c735 | 2013-09-13 22:38:02 -0400 | [diff] [blame] | 790 | assert(info.call_kind() == CallInfo::direct_call || |
| 791 | info.call_kind() == CallInfo::vtable_call, ""); |
| 792 | } |
| 793 | #endif |
Coleen Phillimore | 1457155 | 2016-12-01 14:21:31 -0500 | [diff] [blame] | 794 | // Get sender or sender's host_klass, and only set cpCache entry to resolved if |
| 795 | // it is not an interface. The receiver for invokespecial calls within interface |
| 796 | // methods must be checked for every call. |
| 797 | InstanceKlass* sender = pool->pool_holder(); |
| 798 | sender = sender->is_anonymous() ? sender->host_klass() : sender; |
| 799 | |
David Chase | 222c735 | 2013-09-13 22:38:02 -0400 | [diff] [blame] | 800 | switch (info.call_kind()) { |
| 801 | case CallInfo::direct_call: |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 802 | cp_cache_entry->set_direct_call( |
David Chase | 222c735 | 2013-09-13 22:38:02 -0400 | [diff] [blame] | 803 | bytecode, |
Coleen Phillimore | 1457155 | 2016-12-01 14:21:31 -0500 | [diff] [blame] | 804 | info.resolved_method(), |
| 805 | sender->is_interface()); |
David Chase | 222c735 | 2013-09-13 22:38:02 -0400 | [diff] [blame] | 806 | break; |
| 807 | case CallInfo::vtable_call: |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 808 | cp_cache_entry->set_vtable_call( |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 809 | bytecode, |
| 810 | info.resolved_method(), |
| 811 | info.vtable_index()); |
David Chase | 222c735 | 2013-09-13 22:38:02 -0400 | [diff] [blame] | 812 | break; |
| 813 | case CallInfo::itable_call: |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 814 | cp_cache_entry->set_itable_call( |
David Chase | 222c735 | 2013-09-13 22:38:02 -0400 | [diff] [blame] | 815 | bytecode, |
| 816 | info.resolved_method(), |
| 817 | info.itable_index()); |
| 818 | break; |
| 819 | default: ShouldNotReachHere(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 820 | } |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 821 | } |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 822 | |
| 823 | |
| 824 | // First time execution: Resolve symbols, create a permanent MethodType object. |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 825 | void InterpreterRuntime::resolve_invokehandle(JavaThread* thread) { |
| 826 | Thread* THREAD = thread; |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 827 | const Bytecodes::Code bytecode = Bytecodes::_invokehandle; |
| 828 | |
| 829 | // resolve method |
| 830 | CallInfo info; |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 831 | constantPoolHandle pool(thread, method(thread)->constants()); |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 832 | { |
| 833 | JvmtiHideSingleStepping jhss(thread); |
| 834 | LinkResolver::resolve_invoke(info, Handle(), pool, |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 835 | get_index_u2_cpcache(thread, bytecode), bytecode, |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 836 | CHECK); |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 837 | } // end JvmtiHideSingleStepping |
| 838 | |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 839 | ConstantPoolCacheEntry* cp_cache_entry = cache_entry(thread); |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 840 | cp_cache_entry->set_method_handle(pool, info); |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 841 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 842 | |
John R Rose | 903247c | 2009-10-30 16:22:59 -0700 | [diff] [blame] | 843 | // First time execution: Resolve symbols, create a permanent CallSite object. |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 844 | void InterpreterRuntime::resolve_invokedynamic(JavaThread* thread) { |
| 845 | Thread* THREAD = thread; |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 846 | const Bytecodes::Code bytecode = Bytecodes::_invokedynamic; |
| 847 | |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 848 | //TO DO: consider passing BCI to Java. |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 849 | // int caller_bci = method(thread)->bci_from(bcp(thread)); |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 850 | |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 851 | // resolve method |
| 852 | CallInfo info; |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 853 | constantPoolHandle pool(thread, method(thread)->constants()); |
| 854 | int index = get_index_u4(thread, bytecode); |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 855 | { |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 856 | JvmtiHideSingleStepping jhss(thread); |
Christian Thalinger | 12901d0 | 2012-07-24 10:51:00 -0700 | [diff] [blame] | 857 | LinkResolver::resolve_invoke(info, Handle(), pool, |
| 858 | index, bytecode, CHECK); |
| 859 | } // end JvmtiHideSingleStepping |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 860 | |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 861 | ConstantPoolCacheEntry* cp_cache_entry = pool->invokedynamic_cp_cache_entry_at(index); |
Bharadwaj Yadavalli | 642c6b4 | 2012-11-02 12:30:46 -0700 | [diff] [blame] | 862 | cp_cache_entry->set_dynamic_call(pool, info); |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 863 | } |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 864 | |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 865 | // This function is the interface to the assembly code. It returns the resolved |
| 866 | // cpCache entry. This doesn't safepoint, but the helper routines safepoint. |
| 867 | // This function will check for redefinition! |
| 868 | IRT_ENTRY(void, InterpreterRuntime::resolve_from_cache(JavaThread* thread, Bytecodes::Code bytecode)) { |
| 869 | switch (bytecode) { |
| 870 | case Bytecodes::_getstatic: |
| 871 | case Bytecodes::_putstatic: |
| 872 | case Bytecodes::_getfield: |
| 873 | case Bytecodes::_putfield: |
| 874 | resolve_get_put(thread, bytecode); |
| 875 | break; |
| 876 | case Bytecodes::_invokevirtual: |
| 877 | case Bytecodes::_invokespecial: |
| 878 | case Bytecodes::_invokestatic: |
| 879 | case Bytecodes::_invokeinterface: |
| 880 | resolve_invoke(thread, bytecode); |
| 881 | break; |
| 882 | case Bytecodes::_invokehandle: |
| 883 | resolve_invokehandle(thread); |
| 884 | break; |
| 885 | case Bytecodes::_invokedynamic: |
| 886 | resolve_invokedynamic(thread); |
| 887 | break; |
| 888 | default: |
David Lindholm | 1e71f67 | 2015-09-29 11:02:08 +0200 | [diff] [blame] | 889 | fatal("unexpected bytecode: %s", Bytecodes::name(bytecode)); |
Coleen Phillimore | f0035b7 | 2015-04-01 22:03:17 -0400 | [diff] [blame] | 890 | break; |
| 891 | } |
| 892 | } |
| 893 | IRT_END |
John R Rose | 34c1d72 | 2009-04-21 23:21:04 -0700 | [diff] [blame] | 894 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 895 | //------------------------------------------------------------------------------------------------------------------------ |
| 896 | // Miscellaneous |
| 897 | |
| 898 | |
Y. Srinivas Ramakrishna | c6763b5 | 2009-09-02 00:04:29 -0700 | [diff] [blame] | 899 | nmethod* InterpreterRuntime::frequency_counter_overflow(JavaThread* thread, address branch_bcp) { |
| 900 | nmethod* nm = frequency_counter_overflow_inner(thread, branch_bcp); |
| 901 | assert(branch_bcp != NULL || nm == NULL, "always returns null for non OSR requests"); |
| 902 | if (branch_bcp != NULL && nm != NULL) { |
| 903 | // This was a successful request for an OSR nmethod. Because |
| 904 | // frequency_counter_overflow_inner ends with a safepoint check, |
| 905 | // nm could have been unloaded so look it up again. It's unsafe |
| 906 | // to examine nm directly since it might have been freed and used |
| 907 | // for something else. |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 908 | frame fr = thread->last_frame(); |
| 909 | Method* method = fr.interpreter_frame_method(); |
| 910 | int bci = method->bci_from(fr.interpreter_frame_bcp()); |
Igor Veresov | 2c66a6c | 2010-09-03 17:51:07 -0700 | [diff] [blame] | 911 | nm = method->lookup_osr_nmethod_for(bci, CompLevel_none, false); |
Y. Srinivas Ramakrishna | c6763b5 | 2009-09-02 00:04:29 -0700 | [diff] [blame] | 912 | } |
Christian Thalinger | 301e9f9 | 2012-06-13 11:36:03 -0700 | [diff] [blame] | 913 | #ifndef PRODUCT |
| 914 | if (TraceOnStackReplacement) { |
| 915 | if (nm != NULL) { |
David Lindholm | 5770f4e | 2015-10-09 09:42:33 +0200 | [diff] [blame] | 916 | tty->print("OSR entry @ pc: " INTPTR_FORMAT ": ", p2i(nm->osr_entry())); |
Christian Thalinger | 301e9f9 | 2012-06-13 11:36:03 -0700 | [diff] [blame] | 917 | nm->print(); |
| 918 | } |
| 919 | } |
| 920 | #endif |
Y. Srinivas Ramakrishna | c6763b5 | 2009-09-02 00:04:29 -0700 | [diff] [blame] | 921 | return nm; |
| 922 | } |
| 923 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 924 | IRT_ENTRY(nmethod*, |
Y. Srinivas Ramakrishna | c6763b5 | 2009-09-02 00:04:29 -0700 | [diff] [blame] | 925 | InterpreterRuntime::frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp)) |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 926 | // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized |
| 927 | // flag, in case this method triggers classloading which will call into Java. |
| 928 | UnlockFlagSaver fs(thread); |
| 929 | |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 930 | frame fr = thread->last_frame(); |
| 931 | assert(fr.is_interpreted_frame(), "must come from interpreter"); |
| 932 | methodHandle method(thread, fr.interpreter_frame_method()); |
Igor Veresov | 2c66a6c | 2010-09-03 17:51:07 -0700 | [diff] [blame] | 933 | const int branch_bci = branch_bcp != NULL ? method->bci_from(branch_bcp) : InvocationEntryBci; |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 934 | const int bci = branch_bcp != NULL ? method->bci_from(fr.interpreter_frame_bcp()) : InvocationEntryBci; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 935 | |
Igor Veresov | 84dda87 | 2012-01-26 12:15:24 -0800 | [diff] [blame] | 936 | assert(!HAS_PENDING_EXCEPTION, "Should not have any exceptions pending"); |
Igor Veresov | 47caaa4 | 2011-07-01 10:37:37 -0700 | [diff] [blame] | 937 | nmethod* osr_nm = CompilationPolicy::policy()->event(method, method, branch_bci, bci, CompLevel_none, NULL, thread); |
Igor Veresov | 84dda87 | 2012-01-26 12:15:24 -0800 | [diff] [blame] | 938 | assert(!HAS_PENDING_EXCEPTION, "Event handler should not throw any exceptions"); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 939 | |
Igor Veresov | 2c66a6c | 2010-09-03 17:51:07 -0700 | [diff] [blame] | 940 | if (osr_nm != NULL) { |
| 941 | // We may need to do on-stack replacement which requires that no |
| 942 | // monitors in the activation are biased because their |
| 943 | // BasicObjectLocks will need to migrate during OSR. Force |
| 944 | // unbiasing of all monitors in the activation now (even though |
| 945 | // the OSR nmethod might be invalidated) because we don't have a |
| 946 | // safepoint opportunity later once the migration begins. |
| 947 | if (UseBiasedLocking) { |
| 948 | ResourceMark rm; |
| 949 | GrowableArray<Handle>* objects_to_revoke = new GrowableArray<Handle>(); |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 950 | for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); |
| 951 | kptr < fr.interpreter_frame_monitor_begin(); |
| 952 | kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { |
Igor Veresov | 2c66a6c | 2010-09-03 17:51:07 -0700 | [diff] [blame] | 953 | if( kptr->obj() != NULL ) { |
| 954 | objects_to_revoke->append(Handle(THREAD, kptr->obj())); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 955 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 956 | } |
Igor Veresov | 2c66a6c | 2010-09-03 17:51:07 -0700 | [diff] [blame] | 957 | BiasedLocking::revoke(objects_to_revoke); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 958 | } |
| 959 | } |
Igor Veresov | 2c66a6c | 2010-09-03 17:51:07 -0700 | [diff] [blame] | 960 | return osr_nm; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 961 | IRT_END |
| 962 | |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 963 | IRT_LEAF(jint, InterpreterRuntime::bcp_to_di(Method* method, address cur_bcp)) |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 964 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 965 | int bci = method->bci_from(cur_bcp); |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 966 | MethodData* mdo = method->method_data(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 967 | if (mdo == NULL) return 0; |
| 968 | return mdo->bci_to_di(bci); |
| 969 | IRT_END |
| 970 | |
Igor Veresov | 6a80d21 | 2011-01-10 18:46:29 -0800 | [diff] [blame] | 971 | IRT_ENTRY(void, InterpreterRuntime::profile_method(JavaThread* thread)) |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 972 | // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized |
| 973 | // flag, in case this method triggers classloading which will call into Java. |
| 974 | UnlockFlagSaver fs(thread); |
| 975 | |
| 976 | assert(ProfileInterpreter, "must be profiling interpreter"); |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 977 | frame fr = thread->last_frame(); |
| 978 | assert(fr.is_interpreted_frame(), "must come from interpreter"); |
| 979 | methodHandle method(thread, fr.interpreter_frame_method()); |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 980 | Method::build_interpreter_method_data(method, THREAD); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 981 | if (HAS_PENDING_EXCEPTION) { |
| 982 | assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); |
| 983 | CLEAR_PENDING_EXCEPTION; |
| 984 | // and fall through... |
| 985 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 986 | IRT_END |
| 987 | |
| 988 | |
| 989 | #ifdef ASSERT |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 990 | IRT_LEAF(void, InterpreterRuntime::verify_mdp(Method* method, address bcp, address mdp)) |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 991 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 992 | |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 993 | MethodData* mdo = method->method_data(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 994 | assert(mdo != NULL, "must not be null"); |
| 995 | |
| 996 | int bci = method->bci_from(bcp); |
| 997 | |
| 998 | address mdp2 = mdo->bci_to_dp(bci); |
| 999 | if (mdp != mdp2) { |
| 1000 | ResourceMark rm; |
| 1001 | ResetNoHandleMark rnm; // In a LEAF entry. |
| 1002 | HandleMark hm; |
| 1003 | tty->print_cr("FAILED verify : actual mdp %p expected mdp %p @ bci %d", mdp, mdp2, bci); |
| 1004 | int current_di = mdo->dp_to_di(mdp); |
| 1005 | int expected_di = mdo->dp_to_di(mdp2); |
| 1006 | tty->print_cr(" actual di %d expected di %d", current_di, expected_di); |
| 1007 | int expected_approx_bci = mdo->data_at(expected_di)->bci(); |
| 1008 | int approx_bci = -1; |
| 1009 | if (current_di >= 0) { |
| 1010 | approx_bci = mdo->data_at(current_di)->bci(); |
| 1011 | } |
| 1012 | tty->print_cr(" actual bci is %d expected bci %d", approx_bci, expected_approx_bci); |
| 1013 | mdo->print_on(tty); |
| 1014 | method->print_codes(); |
| 1015 | } |
| 1016 | assert(mdp == mdp2, "wrong mdp"); |
| 1017 | IRT_END |
| 1018 | #endif // ASSERT |
| 1019 | |
| 1020 | IRT_ENTRY(void, InterpreterRuntime::update_mdp_for_ret(JavaThread* thread, int return_bci)) |
| 1021 | assert(ProfileInterpreter, "must be profiling interpreter"); |
| 1022 | ResourceMark rm(thread); |
| 1023 | HandleMark hm(thread); |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 1024 | frame fr = thread->last_frame(); |
| 1025 | assert(fr.is_interpreted_frame(), "must come from interpreter"); |
| 1026 | MethodData* h_mdo = fr.interpreter_frame_method()->method_data(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1027 | |
| 1028 | // Grab a lock to ensure atomic access to setting the return bci and |
| 1029 | // the displacement. This can block and GC, invalidating all naked oops. |
| 1030 | MutexLocker ml(RetData_lock); |
| 1031 | |
| 1032 | // ProfileData is essentially a wrapper around a derived oop, so we |
| 1033 | // need to take the lock before making any ProfileData structures. |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 1034 | ProfileData* data = h_mdo->data_at(h_mdo->dp_to_di(fr.interpreter_frame_mdp())); |
Tobias Hartmann | dabb4ab | 2017-07-19 09:00:13 +0200 | [diff] [blame] | 1035 | guarantee(data != NULL, "profile data must be valid"); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1036 | RetData* rdata = data->as_RetData(); |
| 1037 | address new_mdp = rdata->fixup_ret(return_bci, h_mdo); |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 1038 | fr.interpreter_frame_set_mdp(new_mdp); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1039 | IRT_END |
| 1040 | |
Jiangli Zhou | 5637065 | 2013-04-09 17:17:41 -0400 | [diff] [blame] | 1041 | IRT_ENTRY(MethodCounters*, InterpreterRuntime::build_method_counters(JavaThread* thread, Method* m)) |
| 1042 | MethodCounters* mcs = Method::build_method_counters(m, thread); |
| 1043 | if (HAS_PENDING_EXCEPTION) { |
| 1044 | assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); |
| 1045 | CLEAR_PENDING_EXCEPTION; |
| 1046 | } |
| 1047 | return mcs; |
| 1048 | IRT_END |
| 1049 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1050 | |
| 1051 | IRT_ENTRY(void, InterpreterRuntime::at_safepoint(JavaThread* thread)) |
| 1052 | // We used to need an explict preserve_arguments here for invoke bytecodes. However, |
| 1053 | // stack traversal automatically takes care of preserving arguments for invoke, so |
| 1054 | // this is no longer needed. |
| 1055 | |
| 1056 | // IRT_END does an implicit safepoint check, hence we are guaranteed to block |
| 1057 | // if this is called during a safepoint |
| 1058 | |
| 1059 | if (JvmtiExport::should_post_single_step()) { |
| 1060 | // We are called during regular safepoints and when the VM is |
| 1061 | // single stepping. If any thread is marked for single stepping, |
| 1062 | // then we may have JVMTI work to do. |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 1063 | JvmtiExport::at_single_stepping_point(thread, method(thread), bcp(thread)); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1064 | } |
| 1065 | IRT_END |
| 1066 | |
| 1067 | IRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread *thread, oopDesc* obj, |
| 1068 | ConstantPoolCacheEntry *cp_entry)) |
| 1069 | |
| 1070 | // check the access_flags for the field in the klass |
Tom Rodriguez | 6e8a263 | 2011-03-18 16:00:34 -0700 | [diff] [blame] | 1071 | |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 1072 | InstanceKlass* ik = InstanceKlass::cast(cp_entry->f1_as_klass()); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1073 | int index = cp_entry->field_index(); |
Tom Rodriguez | e39ba1a | 2011-09-10 17:29:02 -0700 | [diff] [blame] | 1074 | if ((ik->field_access_flags(index) & JVM_ACC_FIELD_ACCESS_WATCHED) == 0) return; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1075 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1076 | bool is_static = (obj == NULL); |
| 1077 | HandleMark hm(thread); |
| 1078 | |
| 1079 | Handle h_obj; |
| 1080 | if (!is_static) { |
| 1081 | // non-static field accessors have an object, but we need a handle |
| 1082 | h_obj = Handle(thread, obj); |
| 1083 | } |
Coleen Phillimore | 4b95622 | 2017-03-15 10:25:37 -0400 | [diff] [blame] | 1084 | InstanceKlass* cp_entry_f1 = InstanceKlass::cast(cp_entry->f1_as_klass()); |
| 1085 | jfieldID fid = jfieldIDWorkaround::to_jfieldID(cp_entry_f1, cp_entry->f2_as_index(), is_static); |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 1086 | JvmtiExport::post_field_access(thread, method(thread), bcp(thread), cp_entry_f1, h_obj, fid); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1087 | IRT_END |
| 1088 | |
| 1089 | IRT_ENTRY(void, InterpreterRuntime::post_field_modification(JavaThread *thread, |
| 1090 | oopDesc* obj, ConstantPoolCacheEntry *cp_entry, jvalue *value)) |
| 1091 | |
Coleen Phillimore | 4b95622 | 2017-03-15 10:25:37 -0400 | [diff] [blame] | 1092 | Klass* k = cp_entry->f1_as_klass(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1093 | |
| 1094 | // check the access_flags for the field in the klass |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 1095 | InstanceKlass* ik = InstanceKlass::cast(k); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1096 | int index = cp_entry->field_index(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1097 | // bail out if field modifications are not watched |
Tom Rodriguez | e39ba1a | 2011-09-10 17:29:02 -0700 | [diff] [blame] | 1098 | if ((ik->field_access_flags(index) & JVM_ACC_FIELD_MODIFICATION_WATCHED) == 0) return; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1099 | |
| 1100 | char sig_type = '\0'; |
| 1101 | |
| 1102 | switch(cp_entry->flag_state()) { |
Coleen Phillimore | 200784d | 2015-10-13 18:13:34 -0400 | [diff] [blame] | 1103 | case btos: sig_type = 'B'; break; |
| 1104 | case ztos: sig_type = 'Z'; break; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1105 | case ctos: sig_type = 'C'; break; |
| 1106 | case stos: sig_type = 'S'; break; |
| 1107 | case itos: sig_type = 'I'; break; |
| 1108 | case ftos: sig_type = 'F'; break; |
| 1109 | case atos: sig_type = 'L'; break; |
| 1110 | case ltos: sig_type = 'J'; break; |
| 1111 | case dtos: sig_type = 'D'; break; |
| 1112 | default: ShouldNotReachHere(); return; |
| 1113 | } |
| 1114 | bool is_static = (obj == NULL); |
| 1115 | |
| 1116 | HandleMark hm(thread); |
Coleen Phillimore | 4b95622 | 2017-03-15 10:25:37 -0400 | [diff] [blame] | 1117 | jfieldID fid = jfieldIDWorkaround::to_jfieldID(ik, cp_entry->f2_as_index(), is_static); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1118 | jvalue fvalue; |
| 1119 | #ifdef _LP64 |
| 1120 | fvalue = *value; |
| 1121 | #else |
| 1122 | // Long/double values are stored unaligned and also noncontiguously with |
| 1123 | // tagged stacks. We can't just do a simple assignment even in the non- |
| 1124 | // J/D cases because a C++ compiler is allowed to assume that a jvalue is |
| 1125 | // 8-byte aligned, and interpreter stack slots are only 4-byte aligned. |
| 1126 | // We assume that the two halves of longs/doubles are stored in interpreter |
| 1127 | // stack slots in platform-endian order. |
| 1128 | jlong_accessor u; |
| 1129 | jint* newval = (jint*)value; |
| 1130 | u.words[0] = newval[0]; |
Christian Thalinger | 0211f97 | 2010-04-30 08:37:24 -0700 | [diff] [blame] | 1131 | u.words[1] = newval[Interpreter::stackElementWords]; // skip if tag |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1132 | fvalue.j = u.long_value; |
| 1133 | #endif // _LP64 |
| 1134 | |
| 1135 | Handle h_obj; |
| 1136 | if (!is_static) { |
| 1137 | // non-static field accessors have an object, but we need a handle |
| 1138 | h_obj = Handle(thread, obj); |
| 1139 | } |
| 1140 | |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 1141 | JvmtiExport::post_raw_field_modification(thread, method(thread), bcp(thread), ik, h_obj, |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1142 | fid, sig_type, &fvalue); |
| 1143 | IRT_END |
| 1144 | |
| 1145 | IRT_ENTRY(void, InterpreterRuntime::post_method_entry(JavaThread *thread)) |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 1146 | JvmtiExport::post_method_entry(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1147 | IRT_END |
| 1148 | |
| 1149 | |
| 1150 | IRT_ENTRY(void, InterpreterRuntime::post_method_exit(JavaThread *thread)) |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 1151 | JvmtiExport::post_method_exit(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1152 | IRT_END |
| 1153 | |
| 1154 | IRT_LEAF(int, InterpreterRuntime::interpreter_contains(address pc)) |
| 1155 | { |
| 1156 | return (Interpreter::contains(pc) ? 1 : 0); |
| 1157 | } |
| 1158 | IRT_END |
| 1159 | |
| 1160 | |
| 1161 | // Implementation of SignatureHandlerLibrary |
| 1162 | |
Bertrand Delsart | bf69556 | 2015-06-23 17:48:34 +0200 | [diff] [blame] | 1163 | #ifndef SHARING_FAST_NATIVE_FINGERPRINTS |
| 1164 | // Dummy definition (else normalization method is defined in CPU |
| 1165 | // dependant code) |
| 1166 | uint64_t InterpreterRuntime::normalize_fast_native_fingerprint(uint64_t fingerprint) { |
| 1167 | return fingerprint; |
| 1168 | } |
| 1169 | #endif |
| 1170 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1171 | address SignatureHandlerLibrary::set_handler_blob() { |
| 1172 | BufferBlob* handler_blob = BufferBlob::create("native signature handlers", blob_size); |
| 1173 | if (handler_blob == NULL) { |
| 1174 | return NULL; |
| 1175 | } |
Christian Thalinger | a4b2fe3 | 2010-08-25 05:27:54 -0700 | [diff] [blame] | 1176 | address handler = handler_blob->code_begin(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1177 | _handler_blob = handler_blob; |
| 1178 | _handler = handler; |
| 1179 | return handler; |
| 1180 | } |
| 1181 | |
| 1182 | void SignatureHandlerLibrary::initialize() { |
| 1183 | if (_fingerprints != NULL) { |
| 1184 | return; |
| 1185 | } |
| 1186 | if (set_handler_blob() == NULL) { |
Calvin Cheung | 0f7adcc | 2013-04-30 11:56:52 -0700 | [diff] [blame] | 1187 | vm_exit_out_of_memory(blob_size, OOM_MALLOC_ERROR, "native signature handlers"); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1188 | } |
| 1189 | |
| 1190 | BufferBlob* bb = BufferBlob::create("Signature Handler Temp Buffer", |
| 1191 | SignatureHandlerLibrary::buffer_size); |
Christian Thalinger | a4b2fe3 | 2010-08-25 05:27:54 -0700 | [diff] [blame] | 1192 | _buffer = bb->code_begin(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1193 | |
Zhengyu Gu | a39b176 | 2012-06-28 17:03:16 -0400 | [diff] [blame] | 1194 | _fingerprints = new(ResourceObj::C_HEAP, mtCode)GrowableArray<uint64_t>(32, true); |
| 1195 | _handlers = new(ResourceObj::C_HEAP, mtCode)GrowableArray<address>(32, true); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1196 | } |
| 1197 | |
| 1198 | address SignatureHandlerLibrary::set_handler(CodeBuffer* buffer) { |
| 1199 | address handler = _handler; |
Christian Thalinger | a4b2fe3 | 2010-08-25 05:27:54 -0700 | [diff] [blame] | 1200 | int insts_size = buffer->pure_insts_size(); |
| 1201 | if (handler + insts_size > _handler_blob->code_end()) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1202 | // get a new handler blob |
| 1203 | handler = set_handler_blob(); |
| 1204 | } |
| 1205 | if (handler != NULL) { |
Christian Thalinger | a4b2fe3 | 2010-08-25 05:27:54 -0700 | [diff] [blame] | 1206 | memcpy(handler, buffer->insts_begin(), insts_size); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1207 | pd_set_handler(handler); |
Christian Thalinger | a4b2fe3 | 2010-08-25 05:27:54 -0700 | [diff] [blame] | 1208 | ICache::invalidate_range(handler, insts_size); |
| 1209 | _handler = handler + insts_size; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1210 | } |
| 1211 | return handler; |
| 1212 | } |
| 1213 | |
Coleen Phillimore | f1e89ea | 2015-10-23 16:48:38 -0400 | [diff] [blame] | 1214 | void SignatureHandlerLibrary::add(const methodHandle& method) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1215 | if (method->signature_handler() == NULL) { |
| 1216 | // use slow signature handler if we can't do better |
| 1217 | int handler_index = -1; |
| 1218 | // check if we can use customized (fast) signature handler |
Bob Vandette | 6009cf0 | 2016-12-19 12:39:01 -0500 | [diff] [blame] | 1219 | if (UseFastSignatureHandlers && method->size_of_parameters() <= Fingerprinter::max_size_of_parameters) { |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1220 | // use customized signature handler |
| 1221 | MutexLocker mu(SignatureHandlerLibrary_lock); |
| 1222 | // make sure data structure is initialized |
| 1223 | initialize(); |
| 1224 | // lookup method signature's fingerprint |
| 1225 | uint64_t fingerprint = Fingerprinter(method).fingerprint(); |
Bertrand Delsart | bf69556 | 2015-06-23 17:48:34 +0200 | [diff] [blame] | 1226 | // allow CPU dependant code to optimize the fingerprints for the fast handler |
| 1227 | fingerprint = InterpreterRuntime::normalize_fast_native_fingerprint(fingerprint); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1228 | handler_index = _fingerprints->find(fingerprint); |
| 1229 | // create handler if necessary |
| 1230 | if (handler_index < 0) { |
| 1231 | ResourceMark rm; |
Stefan Karlsson | d37b9c1 | 2017-04-13 09:57:51 +0200 | [diff] [blame] | 1232 | ptrdiff_t align_offset = align_up(_buffer, CodeEntryAlignment) - (address)_buffer; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1233 | CodeBuffer buffer((address)(_buffer + align_offset), |
| 1234 | SignatureHandlerLibrary::buffer_size - align_offset); |
| 1235 | InterpreterRuntime::SignatureHandlerGenerator(method, &buffer).generate(fingerprint); |
| 1236 | // copy into code heap |
| 1237 | address handler = set_handler(&buffer); |
| 1238 | if (handler == NULL) { |
Bertrand Delsart | 5aec2dc | 2015-07-01 10:53:26 +0200 | [diff] [blame] | 1239 | // use slow signature handler (without memorizing it in the fingerprints) |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1240 | } else { |
| 1241 | // debugging suppport |
Bertrand Delsart | 5aec2dc | 2015-07-01 10:53:26 +0200 | [diff] [blame] | 1242 | if (PrintSignatureHandlers && (handler != Interpreter::slow_signature_handler())) { |
Vladimir Ivanov | a82be01 | 2015-12-18 20:23:26 +0300 | [diff] [blame] | 1243 | ttyLocker ttyl; |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1244 | tty->cr(); |
| 1245 | tty->print_cr("argument handler #%d for: %s %s (fingerprint = " UINT64_FORMAT ", %d bytes generated)", |
| 1246 | _handlers->length(), |
| 1247 | (method->is_static() ? "static" : "receiver"), |
| 1248 | method->name_and_sig_as_C_string(), |
| 1249 | fingerprint, |
Christian Thalinger | a4b2fe3 | 2010-08-25 05:27:54 -0700 | [diff] [blame] | 1250 | buffer.insts_size()); |
Bertrand Delsart | 5aec2dc | 2015-07-01 10:53:26 +0200 | [diff] [blame] | 1251 | if (buffer.insts_size() > 0) { |
Bertrand Delsart | 5aec2dc | 2015-07-01 10:53:26 +0200 | [diff] [blame] | 1252 | Disassembler::decode(handler, handler + buffer.insts_size()); |
| 1253 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1254 | #ifndef PRODUCT |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1255 | address rh_begin = Interpreter::result_handler(method()->result_type()); |
Bertrand Delsart | bf69556 | 2015-06-23 17:48:34 +0200 | [diff] [blame] | 1256 | if (CodeCache::contains(rh_begin)) { |
| 1257 | // else it might be special platform dependent values |
| 1258 | tty->print_cr(" --- associated result handler ---"); |
| 1259 | address rh_end = rh_begin; |
| 1260 | while (*(int*)rh_end != 0) { |
| 1261 | rh_end += sizeof(int); |
| 1262 | } |
| 1263 | Disassembler::decode(rh_begin, rh_end); |
| 1264 | } else { |
| 1265 | tty->print_cr(" associated result handler: " PTR_FORMAT, p2i(rh_begin)); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1266 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1267 | #endif |
| 1268 | } |
| 1269 | // add handler to library |
| 1270 | _fingerprints->append(fingerprint); |
| 1271 | _handlers->append(handler); |
| 1272 | // set handler index |
| 1273 | assert(_fingerprints->length() == _handlers->length(), "sanity check"); |
| 1274 | handler_index = _fingerprints->length() - 1; |
| 1275 | } |
| 1276 | } |
Coleen Phillimore | 052aed6 | 2011-02-02 18:38:40 -0500 | [diff] [blame] | 1277 | // Set handler under SignatureHandlerLibrary_lock |
Bertrand Delsart | bf69556 | 2015-06-23 17:48:34 +0200 | [diff] [blame] | 1278 | if (handler_index < 0) { |
| 1279 | // use generic signature handler |
| 1280 | method->set_signature_handler(Interpreter::slow_signature_handler()); |
| 1281 | } else { |
| 1282 | // set handler |
| 1283 | method->set_signature_handler(_handlers->at(handler_index)); |
| 1284 | } |
Coleen Phillimore | 052aed6 | 2011-02-02 18:38:40 -0500 | [diff] [blame] | 1285 | } else { |
| 1286 | CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
| 1287 | // use generic signature handler |
| 1288 | method->set_signature_handler(Interpreter::slow_signature_handler()); |
| 1289 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1290 | } |
Volker Simonis | df6c2c2 | 2010-12-04 00:09:05 -0500 | [diff] [blame] | 1291 | #ifdef ASSERT |
Coleen Phillimore | 052aed6 | 2011-02-02 18:38:40 -0500 | [diff] [blame] | 1292 | int handler_index = -1; |
| 1293 | int fingerprint_index = -2; |
Volker Simonis | df6c2c2 | 2010-12-04 00:09:05 -0500 | [diff] [blame] | 1294 | { |
| 1295 | // '_handlers' and '_fingerprints' are 'GrowableArray's and are NOT synchronized |
| 1296 | // in any way if accessed from multiple threads. To avoid races with another |
| 1297 | // thread which may change the arrays in the above, mutex protected block, we |
| 1298 | // have to protect this read access here with the same mutex as well! |
| 1299 | MutexLocker mu(SignatureHandlerLibrary_lock); |
Coleen Phillimore | 052aed6 | 2011-02-02 18:38:40 -0500 | [diff] [blame] | 1300 | if (_handlers != NULL) { |
Bertrand Delsart | bf69556 | 2015-06-23 17:48:34 +0200 | [diff] [blame] | 1301 | handler_index = _handlers->find(method->signature_handler()); |
| 1302 | uint64_t fingerprint = Fingerprinter(method).fingerprint(); |
| 1303 | fingerprint = InterpreterRuntime::normalize_fast_native_fingerprint(fingerprint); |
| 1304 | fingerprint_index = _fingerprints->find(fingerprint); |
| 1305 | } |
Coleen Phillimore | 052aed6 | 2011-02-02 18:38:40 -0500 | [diff] [blame] | 1306 | } |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1307 | assert(method->signature_handler() == Interpreter::slow_signature_handler() || |
Volker Simonis | df6c2c2 | 2010-12-04 00:09:05 -0500 | [diff] [blame] | 1308 | handler_index == fingerprint_index, "sanity check"); |
Coleen Phillimore | 052aed6 | 2011-02-02 18:38:40 -0500 | [diff] [blame] | 1309 | #endif // ASSERT |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1310 | } |
| 1311 | |
Bertrand Delsart | 5aec2dc | 2015-07-01 10:53:26 +0200 | [diff] [blame] | 1312 | void SignatureHandlerLibrary::add(uint64_t fingerprint, address handler) { |
| 1313 | int handler_index = -1; |
| 1314 | // use customized signature handler |
| 1315 | MutexLocker mu(SignatureHandlerLibrary_lock); |
| 1316 | // make sure data structure is initialized |
| 1317 | initialize(); |
| 1318 | fingerprint = InterpreterRuntime::normalize_fast_native_fingerprint(fingerprint); |
| 1319 | handler_index = _fingerprints->find(fingerprint); |
| 1320 | // create handler if necessary |
| 1321 | if (handler_index < 0) { |
| 1322 | if (PrintSignatureHandlers && (handler != Interpreter::slow_signature_handler())) { |
| 1323 | tty->cr(); |
Matthias Baesken | 0d46ebf | 2015-08-04 06:52:46 -0700 | [diff] [blame] | 1324 | tty->print_cr("argument handler #%d at " PTR_FORMAT " for fingerprint " UINT64_FORMAT, |
Bertrand Delsart | 5aec2dc | 2015-07-01 10:53:26 +0200 | [diff] [blame] | 1325 | _handlers->length(), |
David Lindholm | 5770f4e | 2015-10-09 09:42:33 +0200 | [diff] [blame] | 1326 | p2i(handler), |
Bertrand Delsart | 5aec2dc | 2015-07-01 10:53:26 +0200 | [diff] [blame] | 1327 | fingerprint); |
| 1328 | } |
| 1329 | _fingerprints->append(fingerprint); |
| 1330 | _handlers->append(handler); |
| 1331 | } else { |
| 1332 | if (PrintSignatureHandlers) { |
| 1333 | tty->cr(); |
Matthias Baesken | 0d46ebf | 2015-08-04 06:52:46 -0700 | [diff] [blame] | 1334 | tty->print_cr("duplicate argument handler #%d for fingerprint " UINT64_FORMAT "(old: " PTR_FORMAT ", new : " PTR_FORMAT ")", |
Bertrand Delsart | 5aec2dc | 2015-07-01 10:53:26 +0200 | [diff] [blame] | 1335 | _handlers->length(), |
| 1336 | fingerprint, |
David Lindholm | 5770f4e | 2015-10-09 09:42:33 +0200 | [diff] [blame] | 1337 | p2i(_handlers->at(handler_index)), |
| 1338 | p2i(handler)); |
Bertrand Delsart | 5aec2dc | 2015-07-01 10:53:26 +0200 | [diff] [blame] | 1339 | } |
| 1340 | } |
| 1341 | } |
| 1342 | |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1343 | |
| 1344 | BufferBlob* SignatureHandlerLibrary::_handler_blob = NULL; |
| 1345 | address SignatureHandlerLibrary::_handler = NULL; |
| 1346 | GrowableArray<uint64_t>* SignatureHandlerLibrary::_fingerprints = NULL; |
| 1347 | GrowableArray<address>* SignatureHandlerLibrary::_handlers = NULL; |
| 1348 | address SignatureHandlerLibrary::_buffer = NULL; |
| 1349 | |
| 1350 | |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 1351 | IRT_ENTRY(void, InterpreterRuntime::prepare_native_call(JavaThread* thread, Method* method)) |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1352 | methodHandle m(thread, method); |
| 1353 | assert(m->is_native(), "sanity check"); |
| 1354 | // lookup native function entry point if it doesn't exist |
| 1355 | bool in_base_library; |
| 1356 | if (!m->has_native_function()) { |
| 1357 | NativeLookup::lookup(m, in_base_library, CHECK); |
| 1358 | } |
| 1359 | // make sure signature handler is installed |
| 1360 | SignatureHandlerLibrary::add(m); |
| 1361 | // The interpreter entry point checks the signature handler first, |
| 1362 | // before trying to fetch the native entry point and klass mirror. |
| 1363 | // We must set the signature handler last, so that multiple processors |
| 1364 | // preparing the same method will be sure to see non-null entry & mirror. |
| 1365 | IRT_END |
| 1366 | |
Roland Westrelin | 90844ca | 2011-09-07 14:15:07 +0200 | [diff] [blame] | 1367 | #if defined(IA32) || defined(AMD64) || defined(ARM) |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1368 | IRT_LEAF(void, InterpreterRuntime::popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address)) |
| 1369 | if (src_address == dest_address) { |
| 1370 | return; |
| 1371 | } |
| 1372 | ResetNoHandleMark rnm; // In a LEAF entry. |
| 1373 | HandleMark hm; |
| 1374 | ResourceMark rm; |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 1375 | frame fr = thread->last_frame(); |
| 1376 | assert(fr.is_interpreted_frame(), ""); |
| 1377 | jint bci = fr.interpreter_frame_bci(); |
| 1378 | methodHandle mh(thread, fr.interpreter_frame_method()); |
Tom Rodriguez | 423f587 | 2011-01-13 22:15:41 -0800 | [diff] [blame] | 1379 | Bytecode_invoke invoke(mh, bci); |
| 1380 | ArgumentSizeComputer asc(invoke.signature()); |
| 1381 | int size_of_arguments = (asc.size() + (invoke.has_receiver() ? 1 : 0)); // receiver |
Vladimir Kozlov | 9c7b430 | 2010-06-10 13:04:20 -0700 | [diff] [blame] | 1382 | Copy::conjoint_jbytes(src_address, dest_address, |
Christian Thalinger | 0211f97 | 2010-04-30 08:37:24 -0700 | [diff] [blame] | 1383 | size_of_arguments * Interpreter::stackElementSize); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1384 | IRT_END |
| 1385 | #endif |
Serguei Spitsyn | 4974d1a | 2013-08-06 16:33:59 -0700 | [diff] [blame] | 1386 | |
| 1387 | #if INCLUDE_JVMTI |
| 1388 | // This is a support of the JVMTI PopFrame interface. |
| 1389 | // Make sure it is an invokestatic of a polymorphic intrinsic that has a member_name argument |
| 1390 | // and return it as a vm_result so that it can be reloaded in the list of invokestatic parameters. |
Vladimir Ivanov | 6797122 | 2014-05-29 09:41:07 +0000 | [diff] [blame] | 1391 | // The member_name argument is a saved reference (in local#0) to the member_name. |
| 1392 | // For backward compatibility with some JDK versions (7, 8) it can also be a direct method handle. |
| 1393 | // FIXME: remove DMH case after j.l.i.InvokerBytecodeGenerator code shape is updated. |
| 1394 | IRT_ENTRY(void, InterpreterRuntime::member_name_arg_or_null(JavaThread* thread, address member_name, |
Serguei Spitsyn | 4974d1a | 2013-08-06 16:33:59 -0700 | [diff] [blame] | 1395 | Method* method, address bcp)) |
| 1396 | Bytecodes::Code code = Bytecodes::code_at(method, bcp); |
| 1397 | if (code != Bytecodes::_invokestatic) { |
| 1398 | return; |
| 1399 | } |
| 1400 | ConstantPool* cpool = method->constants(); |
| 1401 | int cp_index = Bytes::get_native_u2(bcp + 1) + ConstantPool::CPCACHE_INDEX_TAG; |
| 1402 | Symbol* cname = cpool->klass_name_at(cpool->klass_ref_index_at(cp_index)); |
| 1403 | Symbol* mname = cpool->name_ref_at(cp_index); |
| 1404 | |
| 1405 | if (MethodHandles::has_member_arg(cname, mname)) { |
Vladimir Ivanov | 6797122 | 2014-05-29 09:41:07 +0000 | [diff] [blame] | 1406 | oop member_name_oop = (oop) member_name; |
| 1407 | if (java_lang_invoke_DirectMethodHandle::is_instance(member_name_oop)) { |
| 1408 | // FIXME: remove after j.l.i.InvokerBytecodeGenerator code shape is updated. |
| 1409 | member_name_oop = java_lang_invoke_DirectMethodHandle::member(member_name_oop); |
| 1410 | } |
| 1411 | thread->set_vm_result(member_name_oop); |
Serguei Spitsyn | 0096dd6 | 2015-04-29 17:14:40 -0700 | [diff] [blame] | 1412 | } else { |
| 1413 | thread->set_vm_result(NULL); |
Serguei Spitsyn | 4974d1a | 2013-08-06 16:33:59 -0700 | [diff] [blame] | 1414 | } |
| 1415 | IRT_END |
| 1416 | #endif // INCLUDE_JVMTI |
Coleen Phillimore | 1954276 | 2016-03-18 15:14:22 -0400 | [diff] [blame] | 1417 | |
| 1418 | #ifndef PRODUCT |
| 1419 | // This must be a IRT_LEAF function because the interpreter must save registers on x86 to |
| 1420 | // call this, which changes rsp and makes the interpreter's expression stack not walkable. |
| 1421 | // The generated code still uses call_VM because that will set up the frame pointer for |
| 1422 | // bcp and method. |
| 1423 | IRT_LEAF(intptr_t, InterpreterRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) |
Ioi Lam | c34f76b | 2017-05-04 06:54:52 -0700 | [diff] [blame] | 1424 | const frame f = thread->last_frame(); |
| 1425 | assert(f.is_interpreted_frame(), "must be an interpreted frame"); |
| 1426 | methodHandle mh(thread, f.interpreter_frame_method()); |
| 1427 | BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); |
Coleen Phillimore | 1954276 | 2016-03-18 15:14:22 -0400 | [diff] [blame] | 1428 | return preserve_this_value; |
| 1429 | IRT_END |
| 1430 | #endif // !PRODUCT |