1 /* 2 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. 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 * 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. 22 * 23 */ 24 25 #ifndef SHARE_VM_INTERPRETER_INTERPRETERRUNTIME_HPP 26 #define SHARE_VM_INTERPRETER_INTERPRETERRUNTIME_HPP 27 28 #include "interpreter/bytecode.hpp" 29 #include "interpreter/linkResolver.hpp" 30 #include "memory/universe.hpp" 31 #include "oops/method.hpp" 32 #include "runtime/frame.inline.hpp" 33 #include "runtime/signature.hpp" 34 #include "runtime/thread.hpp" 35 #include "utilities/macros.hpp" 36 37 // The InterpreterRuntime is called by the interpreter for everything 38 // that cannot/should not be dealt with in assembly and needs C support. 39 40 class InterpreterRuntime: AllStatic { 41 friend class BytecodeClosure; // for method and bcp 42 friend class PrintingClosure; // for method and bcp 43 44 private: 45 // Helper class to access current interpreter state 46 class LastFrameAccessor : public StackObj { 47 frame _last_frame; 48 public: 49 LastFrameAccessor(JavaThread* thread) { 50 assert(thread == Thread::current(), "sanity"); 51 _last_frame = thread->last_frame(); 52 } 53 bool is_interpreted_frame() const { return _last_frame.is_interpreted_frame(); } 54 Method* method() const { return _last_frame.interpreter_frame_method(); } 55 address bcp() const { return _last_frame.interpreter_frame_bcp(); } 56 int bci() const { return _last_frame.interpreter_frame_bci(); } 57 address mdp() const { return _last_frame.interpreter_frame_mdp(); } 58 59 void set_bcp(address bcp) { _last_frame.interpreter_frame_set_bcp(bcp); } 60 void set_mdp(address dp) { _last_frame.interpreter_frame_set_mdp(dp); } 61 62 // pass method to avoid calling unsafe bcp_to_method (partial fix 4926272) 63 Bytecodes::Code code() const { return Bytecodes::code_at(method(), bcp()); } 64 65 Bytecode bytecode() const { return Bytecode(method(), bcp()); } 66 int get_index_u1(Bytecodes::Code bc) const { return bytecode().get_index_u1(bc); } 67 int get_index_u2(Bytecodes::Code bc) const { return bytecode().get_index_u2(bc); } 68 int get_index_u2_cpcache(Bytecodes::Code bc) const 69 { return bytecode().get_index_u2_cpcache(bc); } 70 int get_index_u4(Bytecodes::Code bc) const { return bytecode().get_index_u4(bc); } 71 int number_of_dimensions() const { return bcp()[3]; } 72 ConstantPoolCacheEntry* cache_entry_at(int i) const 73 { return method()->constants()->cache()->entry_at(i); } 74 ConstantPoolCacheEntry* cache_entry() const { return cache_entry_at(Bytes::get_native_u2(bcp() + 1)); } 75 76 oop callee_receiver(Symbol* signature) { 77 return _last_frame.interpreter_callee_receiver(signature); 78 } 79 BasicObjectLock* monitor_begin() const { 80 return _last_frame.interpreter_frame_monitor_begin(); 81 } 82 BasicObjectLock* monitor_end() const { 83 return _last_frame.interpreter_frame_monitor_end(); 84 } 85 BasicObjectLock* next_monitor(BasicObjectLock* current) const { 86 return _last_frame.next_monitor_in_interpreter_frame(current); 87 } 88 89 frame& get_frame() { return _last_frame; } 90 }; 91 92 static void set_bcp_and_mdp(address bcp, JavaThread*thread); 93 static void note_trap_inner(JavaThread* thread, int reason, 94 const methodHandle& trap_method, int trap_bci, TRAPS); 95 static void note_trap(JavaThread *thread, int reason, TRAPS); 96 #ifdef CC_INTERP 97 // Profile traps in C++ interpreter. 98 static void note_trap(JavaThread* thread, int reason, Method *method, int trap_bci); 99 #endif // CC_INTERP 100 101 // Inner work method for Interpreter's frequency counter overflow. 102 static nmethod* frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp); 103 104 public: 105 // Constants 106 static void ldc (JavaThread* thread, bool wide); 107 static void resolve_ldc (JavaThread* thread, Bytecodes::Code bytecode); 108 109 // Allocation 110 static void _new (JavaThread* thread, ConstantPool* pool, int index); 111 static void newarray (JavaThread* thread, BasicType type, jint size); 112 static void anewarray (JavaThread* thread, ConstantPool* pool, int index, jint size); 113 static void multianewarray(JavaThread* thread, jint* first_size_address); 114 static void register_finalizer(JavaThread* thread, oopDesc* obj); 115 116 // Quicken instance-of and check-cast bytecodes 117 static void quicken_io_cc(JavaThread* thread); 118 119 // Exceptions thrown by the interpreter 120 static void throw_AbstractMethodError(JavaThread* thread); 121 static void throw_IncompatibleClassChangeError(JavaThread* thread); 122 static void throw_StackOverflowError(JavaThread* thread); 123 static void throw_delayed_StackOverflowError(JavaThread* thread); 124 static void throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index); 125 static void throw_ClassCastException(JavaThread* thread, oopDesc* obj); 126 static void create_exception(JavaThread* thread, char* name, char* message); 127 static void create_klass_exception(JavaThread* thread, char* name, oopDesc* obj); 128 static address exception_handler_for_exception(JavaThread* thread, oopDesc* exception); 129 #if INCLUDE_JVMTI 130 static void member_name_arg_or_null(JavaThread* thread, address dmh, Method* m, address bcp); 131 #endif 132 static void throw_pending_exception(JavaThread* thread); 133 134 #ifdef CC_INTERP 135 // Profile traps in C++ interpreter. 136 static void note_nullCheck_trap (JavaThread* thread, Method *method, int trap_bci); 137 static void note_div0Check_trap (JavaThread* thread, Method *method, int trap_bci); 138 static void note_rangeCheck_trap(JavaThread* thread, Method *method, int trap_bci); 139 static void note_classCheck_trap(JavaThread* thread, Method *method, int trap_bci); 140 static void note_arrayCheck_trap(JavaThread* thread, Method *method, int trap_bci); 141 // A dummy for macros that shall not profile traps. 142 static void note_no_trap(JavaThread* thread, Method *method, int trap_bci) {} 143 #endif // CC_INTERP 144 145 static void resolve_from_cache(JavaThread* thread, Bytecodes::Code bytecode); 146 private: 147 // Statics & fields 148 static void resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode); 149 150 // Calls 151 static void resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode); 152 static void resolve_invokehandle (JavaThread* thread); 153 static void resolve_invokedynamic(JavaThread* thread); 154 155 public: 156 // Synchronization 157 static void monitorenter(JavaThread* thread, BasicObjectLock* elem); 158 static void monitorexit (JavaThread* thread, BasicObjectLock* elem); 159 160 static void throw_illegal_monitor_state_exception(JavaThread* thread); 161 static void new_illegal_monitor_state_exception(JavaThread* thread); 162 163 // Breakpoints 164 static void _breakpoint(JavaThread* thread, Method* method, address bcp); 165 static Bytecodes::Code get_original_bytecode_at(JavaThread* thread, Method* method, address bcp); 166 static void set_original_bytecode_at(JavaThread* thread, Method* method, address bcp, Bytecodes::Code new_code); 167 static bool is_breakpoint(JavaThread *thread) { return Bytecodes::code_or_bp_at(LastFrameAccessor(thread).bcp()) == Bytecodes::_breakpoint; } 168 169 // Safepoints 170 static void at_safepoint(JavaThread* thread); 171 172 // Debugger support 173 static void post_field_access(JavaThread *thread, oopDesc* obj, 174 ConstantPoolCacheEntry *cp_entry); 175 static void post_field_modification(JavaThread *thread, oopDesc* obj, 176 ConstantPoolCacheEntry *cp_entry, jvalue *value); 177 static void post_method_entry(JavaThread *thread); 178 static void post_method_exit (JavaThread *thread); 179 static int interpreter_contains(address pc); 180 181 // Native signature handlers 182 static void prepare_native_call(JavaThread* thread, Method* method); 183 static address slow_signature_handler(JavaThread* thread, 184 Method* method, 185 intptr_t* from, intptr_t* to); 186 187 #if defined(IA32) || defined(AMD64) || defined(ARM) 188 // Popframe support (only needed on x86, AMD64 and ARM) 189 static void popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address); 190 #endif 191 192 // bytecode tracing is only used by the TraceBytecodes 193 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0; 194 195 // Platform dependent stuff 196 #include CPU_HEADER(interpreterRT) 197 198 // optional normalization of fingerprints to reduce the number of adapters 199 static uint64_t normalize_fast_native_fingerprint(uint64_t fingerprint); 200 201 // Interpreter's frequency counter overflow 202 static nmethod* frequency_counter_overflow(JavaThread* thread, address branch_bcp); 203 204 // Interpreter profiling support 205 static jint bcp_to_di(Method* method, address cur_bcp); 206 static void profile_method(JavaThread* thread); 207 static void update_mdp_for_ret(JavaThread* thread, int bci); 208 #ifdef ASSERT 209 static void verify_mdp(Method* method, address bcp, address mdp); 210 #endif // ASSERT 211 static MethodCounters* build_method_counters(JavaThread* thread, Method* m); 212 }; 213 214 215 class SignatureHandlerLibrary: public AllStatic { 216 public: 217 enum { buffer_size = 1*K }; // the size of the temporary code buffer 218 enum { blob_size = 32*K }; // the size of a handler code blob. 219 220 private: 221 static BufferBlob* _handler_blob; // the current buffer blob containing the generated handlers 222 static address _handler; // next available address within _handler_blob; 223 static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection 224 static GrowableArray<address>* _handlers; // the corresponding handlers 225 static address _buffer; // the temporary code buffer 226 227 static address set_handler_blob(); 228 static void initialize(); 229 static address set_handler(CodeBuffer* buffer); 230 static void pd_set_handler(address handler); 231 232 public: 233 static void add(const methodHandle& method); 234 static void add(uint64_t fingerprint, address handler); 235 }; 236 237 #endif // SHARE_VM_INTERPRETER_INTERPRETERRUNTIME_HPP