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 struct FrameInfo { 41 address pc; 42 address fp; 43 address sp; 44 }; 45 46 class InterpreterRuntime: AllStatic { 47 friend class BytecodeClosure; // for method and bcp 48 friend class PrintingClosure; // for method and bcp 49 50 private: 51 // Helper class to access current interpreter state 52 class LastFrameAccessor : public StackObj { 53 frame _last_frame; 54 public: 55 LastFrameAccessor(JavaThread* thread) { 56 assert(thread == Thread::current(), "sanity"); 57 _last_frame = thread->last_frame(); 58 } 59 bool is_interpreted_frame() const { return _last_frame.is_interpreted_frame(); } 60 Method* method() const { return _last_frame.interpreter_frame_method(); } 61 address bcp() const { return _last_frame.interpreter_frame_bcp(); } 62 int bci() const { return _last_frame.interpreter_frame_bci(); } 63 address mdp() const { return _last_frame.interpreter_frame_mdp(); } 64 65 void set_bcp(address bcp) { _last_frame.interpreter_frame_set_bcp(bcp); } 66 void set_mdp(address dp) { _last_frame.interpreter_frame_set_mdp(dp); } 67 68 // pass method to avoid calling unsafe bcp_to_method (partial fix 4926272) 69 Bytecodes::Code code() const { return Bytecodes::code_at(method(), bcp()); } 70 71 Bytecode bytecode() const { return Bytecode(method(), bcp()); } 72 int get_index_u1(Bytecodes::Code bc) const { return bytecode().get_index_u1(bc); } 73 int get_index_u2(Bytecodes::Code bc) const { return bytecode().get_index_u2(bc); } 74 int get_index_u2_cpcache(Bytecodes::Code bc) const 75 { return bytecode().get_index_u2_cpcache(bc); } 76 int get_index_u4(Bytecodes::Code bc) const { return bytecode().get_index_u4(bc); } 77 int number_of_dimensions() const { return bcp()[3]; } 78 ConstantPoolCacheEntry* cache_entry_at(int i) const 79 { return method()->constants()->cache()->entry_at(i); } 80 ConstantPoolCacheEntry* cache_entry() const { return cache_entry_at(Bytes::get_native_u2(bcp() + 1)); } 81 82 oop callee_receiver(Symbol* signature) { 83 return _last_frame.interpreter_callee_receiver(signature); 84 } 85 BasicObjectLock* monitor_begin() const { 86 return _last_frame.interpreter_frame_monitor_begin(); 87 } 88 BasicObjectLock* monitor_end() const { 89 return _last_frame.interpreter_frame_monitor_end(); 90 } 91 BasicObjectLock* next_monitor(BasicObjectLock* current) const { 92 return _last_frame.next_monitor_in_interpreter_frame(current); 93 } 94 95 frame& get_frame() { return _last_frame; } 96 }; 97 98 static void set_bcp_and_mdp(address bcp, JavaThread*thread); 99 static void note_trap_inner(JavaThread* thread, int reason, 100 const methodHandle& trap_method, int trap_bci, TRAPS); 101 static void note_trap(JavaThread *thread, int reason, TRAPS); 102 #ifdef CC_INTERP 103 // Profile traps in C++ interpreter. 104 static void note_trap(JavaThread* thread, int reason, Method *method, int trap_bci); 105 #endif // CC_INTERP 106 107 // Inner work method for Interpreter's frequency counter overflow. 108 static nmethod* frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp); 109 110 public: 111 // Constants 112 static void ldc (JavaThread* thread, bool wide); 113 static void resolve_ldc (JavaThread* thread, Bytecodes::Code bytecode); 114 115 // Allocation 116 static void _new (JavaThread* thread, ConstantPool* pool, int index); 117 static void newarray (JavaThread* thread, BasicType type, jint size); 118 static void anewarray (JavaThread* thread, ConstantPool* pool, int index, jint size); 119 static void multianewarray(JavaThread* thread, jint* first_size_address); 120 static void register_finalizer(JavaThread* thread, oopDesc* obj); 121 122 // Quicken instance-of and check-cast bytecodes 123 static void quicken_io_cc(JavaThread* thread); 124 125 // Exceptions thrown by the interpreter 126 static void throw_AbstractMethodError(JavaThread* thread); 127 static void throw_IncompatibleClassChangeError(JavaThread* thread); 128 static void throw_StackOverflowError(JavaThread* thread); 129 static void throw_delayed_StackOverflowError(JavaThread* thread); 130 static void throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index); 131 static void throw_ClassCastException(JavaThread* thread, oopDesc* obj); 132 static void create_exception(JavaThread* thread, char* name, char* message); 133 static void create_klass_exception(JavaThread* thread, char* name, oopDesc* obj); 134 static address exception_handler_for_exception(JavaThread* thread, oopDesc* exception); 135 #if INCLUDE_JVMTI 136 static void member_name_arg_or_null(JavaThread* thread, address dmh, Method* m, address bcp); 137 #endif 138 static void throw_pending_exception(JavaThread* thread); 139 140 #ifdef CC_INTERP 141 // Profile traps in C++ interpreter. 142 static void note_nullCheck_trap (JavaThread* thread, Method *method, int trap_bci); 143 static void note_div0Check_trap (JavaThread* thread, Method *method, int trap_bci); 144 static void note_rangeCheck_trap(JavaThread* thread, Method *method, int trap_bci); 145 static void note_classCheck_trap(JavaThread* thread, Method *method, int trap_bci); 146 static void note_arrayCheck_trap(JavaThread* thread, Method *method, int trap_bci); 147 // A dummy for macros that shall not profile traps. 148 static void note_no_trap(JavaThread* thread, Method *method, int trap_bci) {} 149 #endif // CC_INTERP 150 151 static void resolve_from_cache(JavaThread* thread, Bytecodes::Code bytecode); 152 private: 153 // Statics & fields 154 static void resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode); 155 156 // Calls 157 static void resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode); 158 static void resolve_invokehandle (JavaThread* thread); 159 static void resolve_invokedynamic(JavaThread* thread); 160 161 public: 162 // Synchronization 163 static void monitorenter(JavaThread* thread, BasicObjectLock* elem); 164 static void monitorexit (JavaThread* thread, BasicObjectLock* elem); 165 166 static void throw_illegal_monitor_state_exception(JavaThread* thread); 167 static void new_illegal_monitor_state_exception(JavaThread* thread); 168 169 // Breakpoints 170 static void _breakpoint(JavaThread* thread, Method* method, address bcp); 171 static Bytecodes::Code get_original_bytecode_at(JavaThread* thread, Method* method, address bcp); 172 static void set_original_bytecode_at(JavaThread* thread, Method* method, address bcp, Bytecodes::Code new_code); 173 static bool is_breakpoint(JavaThread *thread) { return Bytecodes::code_or_bp_at(LastFrameAccessor(thread).bcp()) == Bytecodes::_breakpoint; } 174 175 // Safepoints 176 static void at_safepoint(JavaThread* thread); 177 178 // Continuation 179 static void freeze(JavaThread* thread, FrameInfo* fi, oop context); 180 static void pop_and_thaw0(JavaThread* thread, FrameInfo* fi, int num_frames, bool pop); 181 static void pop_and_thaw(JavaThread* thread, FrameInfo* fi, int num_frames); 182 static void thaw(JavaThread* thread, FrameInfo* fi, int num_frames); 183 184 // Debugger support 185 static void post_field_access(JavaThread *thread, oopDesc* obj, 186 ConstantPoolCacheEntry *cp_entry); 187 static void post_field_modification(JavaThread *thread, oopDesc* obj, 188 ConstantPoolCacheEntry *cp_entry, jvalue *value); 189 static void post_method_entry(JavaThread *thread); 190 static void post_method_exit (JavaThread *thread); 191 static int interpreter_contains(address pc); 192 193 // Native signature handlers 194 static void prepare_native_call(JavaThread* thread, Method* method); 195 static address slow_signature_handler(JavaThread* thread, 196 Method* method, 197 intptr_t* from, intptr_t* to); 198 199 #if defined(IA32) || defined(AMD64) || defined(ARM) 200 // Popframe support (only needed on x86, AMD64 and ARM) 201 static void popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address); 202 #endif 203 204 // bytecode tracing is only used by the TraceBytecodes 205 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0; 206 207 // Platform dependent stuff 208 #include CPU_HEADER(interpreterRT) 209 210 // optional normalization of fingerprints to reduce the number of adapters 211 static uint64_t normalize_fast_native_fingerprint(uint64_t fingerprint); 212 213 // Interpreter's frequency counter overflow 214 static nmethod* frequency_counter_overflow(JavaThread* thread, address branch_bcp); 215 216 // Interpreter profiling support 217 static jint bcp_to_di(Method* method, address cur_bcp); 218 static void profile_method(JavaThread* thread); 219 static void update_mdp_for_ret(JavaThread* thread, int bci); 220 #ifdef ASSERT 221 static void verify_mdp(Method* method, address bcp, address mdp); 222 #endif // ASSERT 223 static MethodCounters* build_method_counters(JavaThread* thread, Method* m); 224 }; 225 226 227 class SignatureHandlerLibrary: public AllStatic { 228 public: 229 enum { buffer_size = 1*K }; // the size of the temporary code buffer 230 enum { blob_size = 32*K }; // the size of a handler code blob. 231 232 private: 233 static BufferBlob* _handler_blob; // the current buffer blob containing the generated handlers 234 static address _handler; // next available address within _handler_blob; 235 static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection 236 static GrowableArray<address>* _handlers; // the corresponding handlers 237 static address _buffer; // the temporary code buffer 238 239 static address set_handler_blob(); 240 static void initialize(); 241 static address set_handler(CodeBuffer* buffer); 242 static void pd_set_handler(address handler); 243 244 public: 245 static void add(const methodHandle& method); 246 static void add(uint64_t fingerprint, address handler); 247 }; 248 249 #endif // SHARE_VM_INTERPRETER_INTERPRETERRUNTIME_HPP