1 /* 2 * Copyright (c) 1997, 2016, 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 functions to access current interpreter state 46 static frame last_frame(JavaThread *thread) { return thread->last_frame(); } 47 static Method* method(JavaThread *thread) { return last_frame(thread).interpreter_frame_method(); } 48 static address bcp(JavaThread *thread) { return last_frame(thread).interpreter_frame_bcp(); } 49 static int bci(JavaThread *thread) { return last_frame(thread).interpreter_frame_bci(); } 50 static void set_bcp_and_mdp(address bcp, JavaThread*thread); 51 static Bytecodes::Code code(JavaThread *thread) { 52 // pass method to avoid calling unsafe bcp_to_method (partial fix 4926272) 53 return Bytecodes::code_at(method(thread), bcp(thread)); 54 } 55 static Bytecode bytecode(JavaThread *thread) { return Bytecode(method(thread), bcp(thread)); } 56 static int get_index_u1(JavaThread *thread, Bytecodes::Code bc) 57 { return bytecode(thread).get_index_u1(bc); } 58 static int get_index_u2(JavaThread *thread, Bytecodes::Code bc) 59 { return bytecode(thread).get_index_u2(bc); } 60 static int get_index_u2_cpcache(JavaThread *thread, Bytecodes::Code bc) 61 { return bytecode(thread).get_index_u2_cpcache(bc); } 62 static int get_index_u4(JavaThread *thread, Bytecodes::Code bc) 63 { return bytecode(thread).get_index_u4(bc); } 64 static int number_of_dimensions(JavaThread *thread) { return bcp(thread)[3]; } 65 66 static ConstantPoolCacheEntry* cache_entry_at(JavaThread *thread, int i) { return method(thread)->constants()->cache()->entry_at(i); } 67 static ConstantPoolCacheEntry* cache_entry(JavaThread *thread) { return cache_entry_at(thread, Bytes::get_native_u2(bcp(thread) + 1)); } 68 static void note_trap_inner(JavaThread* thread, int reason, 69 methodHandle trap_method, int trap_bci, TRAPS); 70 static void note_trap(JavaThread *thread, int reason, TRAPS); 71 #ifdef CC_INTERP 72 // Profile traps in C++ interpreter. 73 static void note_trap(JavaThread* thread, int reason, Method *method, int trap_bci); 74 #endif // CC_INTERP 75 76 // Inner work method for Interpreter's frequency counter overflow. 77 static nmethod* frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp); 78 79 public: 80 // Constants 81 static void ldc (JavaThread* thread, bool wide); 82 static void resolve_ldc (JavaThread* thread, Bytecodes::Code bytecode); 83 84 // Allocation 85 static void _new (JavaThread* thread, ConstantPool* pool, int index); 86 static void newarray (JavaThread* thread, BasicType type, jint size); 87 static void anewarray (JavaThread* thread, ConstantPool* pool, int index, jint size); 88 static void multianewarray(JavaThread* thread, jint* first_size_address); 89 static void register_finalizer(JavaThread* thread, oopDesc* obj); 90 91 // Quicken instance-of and check-cast bytecodes 92 static void quicken_io_cc(JavaThread* thread); 93 94 // Exceptions thrown by the interpreter 95 static void throw_AbstractMethodError(JavaThread* thread); 96 static void throw_IncompatibleClassChangeError(JavaThread* thread); 97 static void throw_StackOverflowError(JavaThread* thread); 98 static void throw_delayed_StackOverflowError(JavaThread* thread); 99 static void throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index); 100 static void throw_ClassCastException(JavaThread* thread, oopDesc* obj); 101 static void create_exception(JavaThread* thread, char* name, char* message); 102 static void create_klass_exception(JavaThread* thread, char* name, oopDesc* obj); 103 static address exception_handler_for_exception(JavaThread* thread, oopDesc* exception); 104 #if INCLUDE_JVMTI 105 static void member_name_arg_or_null(JavaThread* thread, address dmh, Method* m, address bcp); 106 #endif 107 static void throw_pending_exception(JavaThread* thread); 108 109 #ifdef CC_INTERP 110 // Profile traps in C++ interpreter. 111 static void note_nullCheck_trap (JavaThread* thread, Method *method, int trap_bci); 112 static void note_div0Check_trap (JavaThread* thread, Method *method, int trap_bci); 113 static void note_rangeCheck_trap(JavaThread* thread, Method *method, int trap_bci); 114 static void note_classCheck_trap(JavaThread* thread, Method *method, int trap_bci); 115 static void note_arrayCheck_trap(JavaThread* thread, Method *method, int trap_bci); 116 // A dummy for macros that shall not profile traps. 117 static void note_no_trap(JavaThread* thread, Method *method, int trap_bci) {} 118 #endif // CC_INTERP 119 120 static void resolve_from_cache(JavaThread* thread, Bytecodes::Code bytecode); 121 private: 122 // Statics & fields 123 static void resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode); 124 125 // Calls 126 static void resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode); 127 static void resolve_invokehandle (JavaThread* thread); 128 static void resolve_invokedynamic(JavaThread* thread); 129 130 public: 131 // Synchronization 132 static void monitorenter(JavaThread* thread, BasicObjectLock* elem); 133 static void monitorexit (JavaThread* thread, BasicObjectLock* elem); 134 135 static void throw_illegal_monitor_state_exception(JavaThread* thread); 136 static void new_illegal_monitor_state_exception(JavaThread* thread); 137 138 // Breakpoints 139 static void _breakpoint(JavaThread* thread, Method* method, address bcp); 140 static Bytecodes::Code get_original_bytecode_at(JavaThread* thread, Method* method, address bcp); 141 static void set_original_bytecode_at(JavaThread* thread, Method* method, address bcp, Bytecodes::Code new_code); 142 static bool is_breakpoint(JavaThread *thread) { return Bytecodes::code_or_bp_at(bcp(thread)) == Bytecodes::_breakpoint; } 143 144 // Safepoints 145 static void at_safepoint(JavaThread* thread); 146 147 // Debugger support 148 static void post_field_access(JavaThread *thread, oopDesc* obj, 149 ConstantPoolCacheEntry *cp_entry); 150 static void post_field_modification(JavaThread *thread, oopDesc* obj, 151 ConstantPoolCacheEntry *cp_entry, jvalue *value); 152 static void post_method_entry(JavaThread *thread); 153 static void post_method_exit (JavaThread *thread); 154 static int interpreter_contains(address pc); 155 156 // Native signature handlers 157 static void prepare_native_call(JavaThread* thread, Method* method); 158 static address slow_signature_handler(JavaThread* thread, 159 Method* method, 160 intptr_t* from, intptr_t* to); 161 162 #if defined(IA32) || defined(AMD64) || defined(ARM) 163 // Popframe support (only needed on x86, AMD64 and ARM) 164 static void popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address); 165 #endif 166 167 // bytecode tracing is only used by the TraceBytecodes 168 static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0; 169 170 // Platform dependent stuff 171 #include CPU_HEADER(interpreterRT) 172 173 // optional normalization of fingerprints to reduce the number of adapters 174 static uint64_t normalize_fast_native_fingerprint(uint64_t fingerprint); 175 176 // Interpreter's frequency counter overflow 177 static nmethod* frequency_counter_overflow(JavaThread* thread, address branch_bcp); 178 179 // Interpreter profiling support 180 static jint bcp_to_di(Method* method, address cur_bcp); 181 static void profile_method(JavaThread* thread); 182 static void update_mdp_for_ret(JavaThread* thread, int bci); 183 #ifdef ASSERT 184 static void verify_mdp(Method* method, address bcp, address mdp); 185 #endif // ASSERT 186 static MethodCounters* build_method_counters(JavaThread* thread, Method* m); 187 }; 188 189 190 class SignatureHandlerLibrary: public AllStatic { 191 public: 192 enum { buffer_size = 1*K }; // the size of the temporary code buffer 193 enum { blob_size = 32*K }; // the size of a handler code blob. 194 195 private: 196 static BufferBlob* _handler_blob; // the current buffer blob containing the generated handlers 197 static address _handler; // next available address within _handler_blob; 198 static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection 199 static GrowableArray<address>* _handlers; // the corresponding handlers 200 static address _buffer; // the temporary code buffer 201 202 static address set_handler_blob(); 203 static void initialize(); 204 static address set_handler(CodeBuffer* buffer); 205 static void pd_set_handler(address handler); 206 207 public: 208 static void add(const methodHandle& method); 209 static void add(uint64_t fingerprint, address handler); 210 }; 211 212 #endif // SHARE_VM_INTERPRETER_INTERPRETERRUNTIME_HPP