Wed, 13 Jan 2010 23:05:52 -0800
6912065: final fields in objects need to support inlining optimizations for JSR 292
Reviewed-by: twisti, kvn
duke@435 | 1 | /* |
jrose@1100 | 2 | * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | class AdapterHandlerEntry; |
duke@435 | 26 | class vframeStream; |
duke@435 | 27 | |
duke@435 | 28 | // Runtime is the base class for various runtime interfaces |
duke@435 | 29 | // (InterpreterRuntime, CompilerRuntime, etc.). It provides |
duke@435 | 30 | // shared functionality such as exception forwarding (C++ to |
duke@435 | 31 | // Java exceptions), locking/unlocking mechanisms, statistical |
duke@435 | 32 | // information, etc. |
duke@435 | 33 | |
duke@435 | 34 | class SharedRuntime: AllStatic { |
duke@435 | 35 | private: |
duke@435 | 36 | static methodHandle resolve_sub_helper(JavaThread *thread, |
duke@435 | 37 | bool is_virtual, |
duke@435 | 38 | bool is_optimized, TRAPS); |
duke@435 | 39 | |
duke@435 | 40 | // Shared stub locations |
duke@435 | 41 | |
duke@435 | 42 | static RuntimeStub* _wrong_method_blob; |
duke@435 | 43 | static RuntimeStub* _ic_miss_blob; |
duke@435 | 44 | static RuntimeStub* _resolve_opt_virtual_call_blob; |
duke@435 | 45 | static RuntimeStub* _resolve_virtual_call_blob; |
duke@435 | 46 | static RuntimeStub* _resolve_static_call_blob; |
duke@435 | 47 | |
duke@435 | 48 | static SafepointBlob* _polling_page_safepoint_handler_blob; |
duke@435 | 49 | static SafepointBlob* _polling_page_return_handler_blob; |
duke@435 | 50 | #ifdef COMPILER2 |
duke@435 | 51 | static ExceptionBlob* _exception_blob; |
duke@435 | 52 | static UncommonTrapBlob* _uncommon_trap_blob; |
duke@435 | 53 | #endif // COMPILER2 |
duke@435 | 54 | |
duke@435 | 55 | #ifndef PRODUCT |
duke@435 | 56 | |
duke@435 | 57 | // Counters |
duke@435 | 58 | static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable) |
duke@435 | 59 | |
duke@435 | 60 | #endif // !PRODUCT |
duke@435 | 61 | public: |
kamg@551 | 62 | |
kamg@551 | 63 | // max bytes for each dtrace string parameter |
kamg@551 | 64 | enum { max_dtrace_string_size = 256 }; |
kamg@551 | 65 | |
duke@435 | 66 | // The following arithmetic routines are used on platforms that do |
duke@435 | 67 | // not have machine instructions to implement their functionality. |
duke@435 | 68 | // Do not remove these. |
duke@435 | 69 | |
duke@435 | 70 | // long arithmetics |
duke@435 | 71 | static jlong lmul(jlong y, jlong x); |
duke@435 | 72 | static jlong ldiv(jlong y, jlong x); |
duke@435 | 73 | static jlong lrem(jlong y, jlong x); |
duke@435 | 74 | |
duke@435 | 75 | // float and double remainder |
duke@435 | 76 | static jfloat frem(jfloat x, jfloat y); |
duke@435 | 77 | static jdouble drem(jdouble x, jdouble y); |
duke@435 | 78 | |
duke@435 | 79 | // float conversion (needs to set appropriate rounding mode) |
duke@435 | 80 | static jint f2i (jfloat x); |
duke@435 | 81 | static jlong f2l (jfloat x); |
duke@435 | 82 | static jint d2i (jdouble x); |
duke@435 | 83 | static jlong d2l (jdouble x); |
duke@435 | 84 | static jfloat d2f (jdouble x); |
duke@435 | 85 | static jfloat l2f (jlong x); |
duke@435 | 86 | static jdouble l2d (jlong x); |
duke@435 | 87 | |
duke@435 | 88 | // double trigonometrics and transcendentals |
duke@435 | 89 | static jdouble dsin(jdouble x); |
duke@435 | 90 | static jdouble dcos(jdouble x); |
duke@435 | 91 | static jdouble dtan(jdouble x); |
duke@435 | 92 | static jdouble dlog(jdouble x); |
duke@435 | 93 | static jdouble dlog10(jdouble x); |
duke@435 | 94 | static jdouble dexp(jdouble x); |
duke@435 | 95 | static jdouble dpow(jdouble x, jdouble y); |
duke@435 | 96 | |
duke@435 | 97 | |
duke@435 | 98 | // exception handling across interpreter/compiler boundaries |
duke@435 | 99 | static address raw_exception_handler_for_return_address(address return_address); |
duke@435 | 100 | static address exception_handler_for_return_address(address return_address); |
duke@435 | 101 | |
ysr@777 | 102 | #ifndef SERIALGC |
ysr@777 | 103 | // G1 write barriers |
ysr@777 | 104 | static void g1_wb_pre(oopDesc* orig, JavaThread *thread); |
ysr@777 | 105 | static void g1_wb_post(void* card_addr, JavaThread* thread); |
ysr@777 | 106 | #endif // !SERIALGC |
ysr@777 | 107 | |
duke@435 | 108 | // exception handling and implicit exceptions |
duke@435 | 109 | static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, |
duke@435 | 110 | bool force_unwind, bool top_frame_only); |
duke@435 | 111 | enum ImplicitExceptionKind { |
duke@435 | 112 | IMPLICIT_NULL, |
duke@435 | 113 | IMPLICIT_DIVIDE_BY_ZERO, |
duke@435 | 114 | STACK_OVERFLOW |
duke@435 | 115 | }; |
duke@435 | 116 | static void throw_AbstractMethodError(JavaThread* thread); |
dcubed@451 | 117 | static void throw_IncompatibleClassChangeError(JavaThread* thread); |
duke@435 | 118 | static void throw_ArithmeticException(JavaThread* thread); |
duke@435 | 119 | static void throw_NullPointerException(JavaThread* thread); |
duke@435 | 120 | static void throw_NullPointerException_at_call(JavaThread* thread); |
duke@435 | 121 | static void throw_StackOverflowError(JavaThread* thread); |
duke@435 | 122 | static address continuation_for_implicit_exception(JavaThread* thread, |
duke@435 | 123 | address faulting_pc, |
duke@435 | 124 | ImplicitExceptionKind exception_kind); |
duke@435 | 125 | |
duke@435 | 126 | // Shared stub locations |
duke@435 | 127 | static address get_poll_stub(address pc); |
duke@435 | 128 | |
duke@435 | 129 | static address get_ic_miss_stub() { |
duke@435 | 130 | assert(_ic_miss_blob!= NULL, "oops"); |
duke@435 | 131 | return _ic_miss_blob->instructions_begin(); |
duke@435 | 132 | } |
duke@435 | 133 | |
duke@435 | 134 | static address get_handle_wrong_method_stub() { |
duke@435 | 135 | assert(_wrong_method_blob!= NULL, "oops"); |
duke@435 | 136 | return _wrong_method_blob->instructions_begin(); |
duke@435 | 137 | } |
duke@435 | 138 | |
duke@435 | 139 | #ifdef COMPILER2 |
duke@435 | 140 | static void generate_uncommon_trap_blob(void); |
duke@435 | 141 | static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; } |
duke@435 | 142 | #endif // COMPILER2 |
duke@435 | 143 | |
duke@435 | 144 | static address get_resolve_opt_virtual_call_stub(){ |
duke@435 | 145 | assert(_resolve_opt_virtual_call_blob != NULL, "oops"); |
duke@435 | 146 | return _resolve_opt_virtual_call_blob->instructions_begin(); |
duke@435 | 147 | } |
duke@435 | 148 | static address get_resolve_virtual_call_stub() { |
duke@435 | 149 | assert(_resolve_virtual_call_blob != NULL, "oops"); |
duke@435 | 150 | return _resolve_virtual_call_blob->instructions_begin(); |
duke@435 | 151 | } |
duke@435 | 152 | static address get_resolve_static_call_stub() { |
duke@435 | 153 | assert(_resolve_static_call_blob != NULL, "oops"); |
duke@435 | 154 | return _resolve_static_call_blob->instructions_begin(); |
duke@435 | 155 | } |
duke@435 | 156 | |
duke@435 | 157 | static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; } |
duke@435 | 158 | static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; } |
duke@435 | 159 | |
duke@435 | 160 | // Counters |
duke@435 | 161 | #ifndef PRODUCT |
duke@435 | 162 | static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; } |
duke@435 | 163 | #endif // PRODUCT |
duke@435 | 164 | |
duke@435 | 165 | // Helper routine for full-speed JVMTI exception throwing support |
duke@435 | 166 | static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception); |
duke@435 | 167 | static void throw_and_post_jvmti_exception(JavaThread *thread, symbolOop name, const char *message = NULL); |
duke@435 | 168 | |
dcubed@1045 | 169 | // RedefineClasses() tracing support for obsolete method entry |
dcubed@1045 | 170 | static int rc_trace_method_entry(JavaThread* thread, methodOopDesc* m); |
dcubed@1045 | 171 | |
duke@435 | 172 | // To be used as the entry point for unresolved native methods. |
duke@435 | 173 | static address native_method_throw_unsatisfied_link_error_entry(); |
duke@435 | 174 | |
duke@435 | 175 | // bytecode tracing is only used by the TraceBytecodes |
duke@435 | 176 | static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0; |
duke@435 | 177 | |
duke@435 | 178 | // Used to back off a spin lock that is under heavy contention |
duke@435 | 179 | static void yield_all(JavaThread* thread, int attempts = 0); |
duke@435 | 180 | |
duke@435 | 181 | static oop retrieve_receiver( symbolHandle sig, frame caller ); |
duke@435 | 182 | |
duke@435 | 183 | static void register_finalizer(JavaThread* thread, oopDesc* obj); |
duke@435 | 184 | |
duke@435 | 185 | // dtrace notifications |
duke@435 | 186 | static int dtrace_object_alloc(oopDesc* o); |
duke@435 | 187 | static int dtrace_object_alloc_base(Thread* thread, oopDesc* o); |
duke@435 | 188 | static int dtrace_method_entry(JavaThread* thread, methodOopDesc* m); |
duke@435 | 189 | static int dtrace_method_exit(JavaThread* thread, methodOopDesc* m); |
duke@435 | 190 | |
duke@435 | 191 | // Utility method for retrieving the Java thread id, returns 0 if the |
duke@435 | 192 | // thread is not a well formed Java thread. |
duke@435 | 193 | static jlong get_java_tid(Thread* thread); |
duke@435 | 194 | |
duke@435 | 195 | |
duke@435 | 196 | // used by native wrappers to reenable yellow if overflow happened in native code |
duke@435 | 197 | static void reguard_yellow_pages(); |
duke@435 | 198 | |
duke@435 | 199 | /** |
duke@435 | 200 | * Fill in the "X cannot be cast to a Y" message for ClassCastException |
duke@435 | 201 | * |
duke@435 | 202 | * @param thr the current thread |
duke@435 | 203 | * @param name the name of the class of the object attempted to be cast |
duke@435 | 204 | * @return the dynamically allocated exception message (must be freed |
duke@435 | 205 | * by the caller using a resource mark) |
duke@435 | 206 | * |
duke@435 | 207 | * BCP must refer to the current 'checkcast' opcode for the frame |
duke@435 | 208 | * on top of the stack. |
duke@435 | 209 | * The caller (or one of it's callers) must use a ResourceMark |
duke@435 | 210 | * in order to correctly free the result. |
duke@435 | 211 | */ |
duke@435 | 212 | static char* generate_class_cast_message(JavaThread* thr, const char* name); |
duke@435 | 213 | |
duke@435 | 214 | /** |
jrose@1145 | 215 | * Fill in the message for a WrongMethodTypeException |
jrose@1145 | 216 | * |
jrose@1145 | 217 | * @param thr the current thread |
jrose@1145 | 218 | * @param mtype (optional) expected method type (or argument class) |
jrose@1145 | 219 | * @param mhandle (optional) actual method handle (or argument) |
jrose@1145 | 220 | * @return the dynamically allocated exception message |
jrose@1145 | 221 | * |
jrose@1145 | 222 | * BCP for the frame on top of the stack must refer to an |
jrose@1145 | 223 | * 'invokevirtual' op for a method handle, or an 'invokedyamic' op. |
jrose@1145 | 224 | * The caller (or one of its callers) must use a ResourceMark |
jrose@1145 | 225 | * in order to correctly free the result. |
jrose@1145 | 226 | */ |
jrose@1145 | 227 | static char* generate_wrong_method_type_message(JavaThread* thr, |
jrose@1145 | 228 | oopDesc* mtype = NULL, |
jrose@1145 | 229 | oopDesc* mhandle = NULL); |
jrose@1145 | 230 | |
jrose@1145 | 231 | /** Return non-null if the mtype is a klass or Class, not a MethodType. */ |
jrose@1145 | 232 | static oop wrong_method_type_is_for_single_argument(JavaThread* thr, |
jrose@1145 | 233 | oopDesc* mtype); |
jrose@1145 | 234 | |
jrose@1145 | 235 | /** |
duke@435 | 236 | * Fill in the "X cannot be cast to a Y" message for ClassCastException |
duke@435 | 237 | * |
duke@435 | 238 | * @param name the name of the class of the object attempted to be cast |
duke@435 | 239 | * @param klass the name of the target klass attempt |
jrose@1145 | 240 | * @param gripe the specific kind of problem being reported |
duke@435 | 241 | * @return the dynamically allocated exception message (must be freed |
duke@435 | 242 | * by the caller using a resource mark) |
duke@435 | 243 | * |
duke@435 | 244 | * This version does not require access the frame, so it can be called |
duke@435 | 245 | * from interpreted code |
duke@435 | 246 | * The caller (or one of it's callers) must use a ResourceMark |
duke@435 | 247 | * in order to correctly free the result. |
duke@435 | 248 | */ |
jrose@1145 | 249 | static char* generate_class_cast_message(const char* name, const char* klass, |
jrose@1145 | 250 | const char* gripe = " cannot be cast to "); |
duke@435 | 251 | |
duke@435 | 252 | // Resolves a call site- may patch in the destination of the call into the |
duke@435 | 253 | // compiled code. |
duke@435 | 254 | static methodHandle resolve_helper(JavaThread *thread, |
duke@435 | 255 | bool is_virtual, |
duke@435 | 256 | bool is_optimized, TRAPS); |
duke@435 | 257 | |
duke@435 | 258 | static void generate_stubs(void); |
duke@435 | 259 | |
duke@435 | 260 | private: |
duke@435 | 261 | // deopt blob |
duke@435 | 262 | static void generate_deopt_blob(void); |
duke@435 | 263 | static DeoptimizationBlob* _deopt_blob; |
duke@435 | 264 | |
duke@435 | 265 | public: |
duke@435 | 266 | static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; } |
duke@435 | 267 | |
duke@435 | 268 | // Resets a call-site in compiled code so it will get resolved again. |
duke@435 | 269 | static methodHandle reresolve_call_site(JavaThread *thread, TRAPS); |
duke@435 | 270 | |
duke@435 | 271 | // In the code prolog, if the klass comparison fails, the inline cache |
duke@435 | 272 | // misses and the call site is patched to megamorphic |
duke@435 | 273 | static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS); |
duke@435 | 274 | |
duke@435 | 275 | // Find the method that called us. |
duke@435 | 276 | static methodHandle find_callee_method(JavaThread* thread, TRAPS); |
duke@435 | 277 | |
duke@435 | 278 | |
duke@435 | 279 | private: |
duke@435 | 280 | static Handle find_callee_info(JavaThread* thread, |
duke@435 | 281 | Bytecodes::Code& bc, |
duke@435 | 282 | CallInfo& callinfo, TRAPS); |
duke@435 | 283 | static Handle find_callee_info_helper(JavaThread* thread, |
duke@435 | 284 | vframeStream& vfst, |
duke@435 | 285 | Bytecodes::Code& bc, |
duke@435 | 286 | CallInfo& callinfo, TRAPS); |
duke@435 | 287 | |
duke@435 | 288 | static address clean_virtual_call_entry(); |
duke@435 | 289 | static address clean_opt_virtual_call_entry(); |
duke@435 | 290 | static address clean_static_call_entry(); |
duke@435 | 291 | |
duke@435 | 292 | public: |
duke@435 | 293 | |
duke@435 | 294 | // Read the array of BasicTypes from a Java signature, and compute where |
duke@435 | 295 | // compiled Java code would like to put the results. Values in reg_lo and |
duke@435 | 296 | // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are |
duke@435 | 297 | // registers, those above refer to 4-byte stack slots. All stack slots are |
duke@435 | 298 | // based off of the window top. SharedInfo::stack0 refers to the first usable |
duke@435 | 299 | // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word |
duke@435 | 300 | // 4-bytes higher. So for sparc because the register window save area is at |
duke@435 | 301 | // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0 |
duke@435 | 302 | // will be just above it. ( |
duke@435 | 303 | // return value is the maximum number of VMReg stack slots the convention will use. |
duke@435 | 304 | static int java_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed, int is_outgoing); |
duke@435 | 305 | |
duke@435 | 306 | // Ditto except for calling C |
duke@435 | 307 | static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed); |
duke@435 | 308 | |
duke@435 | 309 | // Generate I2C and C2I adapters. These adapters are simple argument marshalling |
duke@435 | 310 | // blobs. Unlike adapters in the tiger and earlier releases the code in these |
duke@435 | 311 | // blobs does not create a new frame and are therefore virtually invisible |
duke@435 | 312 | // to the stack walking code. In general these blobs extend the callers stack |
duke@435 | 313 | // as needed for the conversion of argument locations. |
duke@435 | 314 | |
duke@435 | 315 | // When calling a c2i blob the code will always call the interpreter even if |
duke@435 | 316 | // by the time we reach the blob there is compiled code available. This allows |
duke@435 | 317 | // the blob to pass the incoming stack pointer (the sender sp) in a known |
duke@435 | 318 | // location for the interpreter to record. This is used by the frame code |
duke@435 | 319 | // to correct the sender code to match up with the stack pointer when the |
duke@435 | 320 | // thread left the compiled code. In addition it allows the interpreter |
duke@435 | 321 | // to remove the space the c2i adapter allocated to do it argument conversion. |
duke@435 | 322 | |
duke@435 | 323 | // Although a c2i blob will always run interpreted even if compiled code is |
duke@435 | 324 | // present if we see that compiled code is present the compiled call site |
duke@435 | 325 | // will be patched/re-resolved so that later calls will run compiled. |
duke@435 | 326 | |
duke@435 | 327 | // Aditionally a c2i blob need to have a unverified entry because it can be reached |
duke@435 | 328 | // in situations where the call site is an inlined cache site and may go megamorphic. |
duke@435 | 329 | |
duke@435 | 330 | // A i2c adapter is simpler than the c2i adapter. This is because it is assumed |
duke@435 | 331 | // that the interpreter before it does any call dispatch will record the current |
duke@435 | 332 | // stack pointer in the interpreter frame. On return it will restore the stack |
duke@435 | 333 | // pointer as needed. This means the i2c adapter code doesn't need any special |
duke@435 | 334 | // handshaking path with compiled code to keep the stack walking correct. |
duke@435 | 335 | |
duke@435 | 336 | static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm, |
duke@435 | 337 | int total_args_passed, |
duke@435 | 338 | int max_arg, |
duke@435 | 339 | const BasicType *sig_bt, |
duke@435 | 340 | const VMRegPair *regs); |
duke@435 | 341 | |
duke@435 | 342 | // OSR support |
duke@435 | 343 | |
duke@435 | 344 | // OSR_migration_begin will extract the jvm state from an interpreter |
duke@435 | 345 | // frame (locals, monitors) and store the data in a piece of C heap |
duke@435 | 346 | // storage. This then allows the interpreter frame to be removed from the |
duke@435 | 347 | // stack and the OSR nmethod to be called. That method is called with a |
duke@435 | 348 | // pointer to the C heap storage. This pointer is the return value from |
duke@435 | 349 | // OSR_migration_begin. |
duke@435 | 350 | |
duke@435 | 351 | static intptr_t* OSR_migration_begin( JavaThread *thread); |
duke@435 | 352 | |
duke@435 | 353 | // OSR_migration_end is a trivial routine. It is called after the compiled |
duke@435 | 354 | // method has extracted the jvm state from the C heap that OSR_migration_begin |
duke@435 | 355 | // created. It's entire job is to simply free this storage. |
duke@435 | 356 | static void OSR_migration_end ( intptr_t* buf); |
duke@435 | 357 | |
duke@435 | 358 | // Convert a sig into a calling convention register layout |
duke@435 | 359 | // and find interesting things about it. |
twisti@1573 | 360 | static VMRegPair* find_callee_arguments(symbolOop sig, bool has_receiver, int *arg_size); |
duke@435 | 361 | static VMReg name_for_receiver(); |
duke@435 | 362 | |
duke@435 | 363 | // "Top of Stack" slots that may be unused by the calling convention but must |
duke@435 | 364 | // otherwise be preserved. |
duke@435 | 365 | // On Intel these are not necessary and the value can be zero. |
duke@435 | 366 | // On Sparc this describes the words reserved for storing a register window |
duke@435 | 367 | // when an interrupt occurs. |
duke@435 | 368 | static uint out_preserve_stack_slots(); |
duke@435 | 369 | |
duke@435 | 370 | // Save and restore a native result |
duke@435 | 371 | static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); |
duke@435 | 372 | static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); |
duke@435 | 373 | |
duke@435 | 374 | // Generate a native wrapper for a given method. The method takes arguments |
duke@435 | 375 | // in the Java compiled code convention, marshals them to the native |
duke@435 | 376 | // convention (handlizes oops, etc), transitions to native, makes the call, |
duke@435 | 377 | // returns to java state (possibly blocking), unhandlizes any result and |
duke@435 | 378 | // returns. |
duke@435 | 379 | static nmethod *generate_native_wrapper(MacroAssembler* masm, |
duke@435 | 380 | methodHandle method, |
duke@435 | 381 | int total_args_passed, |
duke@435 | 382 | int max_arg, |
duke@435 | 383 | BasicType *sig_bt, |
duke@435 | 384 | VMRegPair *regs, |
duke@435 | 385 | BasicType ret_type ); |
duke@435 | 386 | |
kamg@551 | 387 | #ifdef HAVE_DTRACE_H |
kamg@551 | 388 | // Generate a dtrace wrapper for a given method. The method takes arguments |
kamg@551 | 389 | // in the Java compiled code convention, marshals them to the native |
kamg@551 | 390 | // convention (handlizes oops, etc), transitions to native, makes the call, |
kamg@551 | 391 | // returns to java state (possibly blocking), unhandlizes any result and |
kamg@551 | 392 | // returns. |
kamg@551 | 393 | static nmethod *generate_dtrace_nmethod(MacroAssembler* masm, |
kamg@551 | 394 | methodHandle method); |
kamg@551 | 395 | |
kamg@551 | 396 | // dtrace support to convert a Java string to utf8 |
kamg@551 | 397 | static void get_utf(oopDesc* src, address dst); |
kamg@551 | 398 | #endif // def HAVE_DTRACE_H |
kamg@551 | 399 | |
duke@435 | 400 | // A compiled caller has just called the interpreter, but compiled code |
duke@435 | 401 | // exists. Patch the caller so he no longer calls into the interpreter. |
duke@435 | 402 | static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc); |
duke@435 | 403 | |
duke@435 | 404 | // Slow-path Locking and Unlocking |
duke@435 | 405 | static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread); |
duke@435 | 406 | static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock); |
duke@435 | 407 | |
duke@435 | 408 | // Resolving of calls |
duke@435 | 409 | static address resolve_static_call_C (JavaThread *thread); |
duke@435 | 410 | static address resolve_virtual_call_C (JavaThread *thread); |
duke@435 | 411 | static address resolve_opt_virtual_call_C(JavaThread *thread); |
duke@435 | 412 | |
duke@435 | 413 | // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.) |
duke@435 | 414 | static void slow_arraycopy_C(oopDesc* src, jint src_pos, |
duke@435 | 415 | oopDesc* dest, jint dest_pos, |
duke@435 | 416 | jint length, JavaThread* thread); |
duke@435 | 417 | |
duke@435 | 418 | // handle ic miss with caller being compiled code |
duke@435 | 419 | // wrong method handling (inline cache misses, zombie methods) |
duke@435 | 420 | static address handle_wrong_method(JavaThread* thread); |
duke@435 | 421 | static address handle_wrong_method_ic_miss(JavaThread* thread); |
duke@435 | 422 | |
duke@435 | 423 | #ifndef PRODUCT |
duke@435 | 424 | |
duke@435 | 425 | // Collect and print inline cache miss statistics |
duke@435 | 426 | private: |
duke@435 | 427 | enum { maxICmiss_count = 100 }; |
duke@435 | 428 | static int _ICmiss_index; // length of IC miss histogram |
duke@435 | 429 | static int _ICmiss_count[maxICmiss_count]; // miss counts |
duke@435 | 430 | static address _ICmiss_at[maxICmiss_count]; // miss addresses |
duke@435 | 431 | static void trace_ic_miss(address at); |
duke@435 | 432 | |
duke@435 | 433 | public: |
duke@435 | 434 | static int _monitor_enter_ctr; // monitor enter slow |
duke@435 | 435 | static int _monitor_exit_ctr; // monitor exit slow |
duke@435 | 436 | static int _throw_null_ctr; // throwing a null-pointer exception |
duke@435 | 437 | static int _ic_miss_ctr; // total # of IC misses |
duke@435 | 438 | static int _wrong_method_ctr; |
duke@435 | 439 | static int _resolve_static_ctr; |
duke@435 | 440 | static int _resolve_virtual_ctr; |
duke@435 | 441 | static int _resolve_opt_virtual_ctr; |
duke@435 | 442 | static int _implicit_null_throws; |
duke@435 | 443 | static int _implicit_div0_throws; |
duke@435 | 444 | |
duke@435 | 445 | static int _jbyte_array_copy_ctr; // Slow-path byte array copy |
duke@435 | 446 | static int _jshort_array_copy_ctr; // Slow-path short array copy |
duke@435 | 447 | static int _jint_array_copy_ctr; // Slow-path int array copy |
duke@435 | 448 | static int _jlong_array_copy_ctr; // Slow-path long array copy |
duke@435 | 449 | static int _oop_array_copy_ctr; // Slow-path oop array copy |
duke@435 | 450 | static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast |
duke@435 | 451 | static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks |
duke@435 | 452 | static int _generic_array_copy_ctr; // Slow-path includes type decoding |
duke@435 | 453 | static int _slow_array_copy_ctr; // Slow-path failed out to a method call |
duke@435 | 454 | |
duke@435 | 455 | static int _new_instance_ctr; // 'new' object requires GC |
duke@435 | 456 | static int _new_array_ctr; // 'new' array requires GC |
duke@435 | 457 | static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr; |
duke@435 | 458 | static int _find_handler_ctr; // find exception handler |
duke@435 | 459 | static int _rethrow_ctr; // rethrow exception |
duke@435 | 460 | static int _mon_enter_stub_ctr; // monitor enter stub |
duke@435 | 461 | static int _mon_exit_stub_ctr; // monitor exit stub |
duke@435 | 462 | static int _mon_enter_ctr; // monitor enter slow |
duke@435 | 463 | static int _mon_exit_ctr; // monitor exit slow |
duke@435 | 464 | static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check |
duke@435 | 465 | |
duke@435 | 466 | // Statistics code |
duke@435 | 467 | // stats for "normal" compiled calls (non-interface) |
duke@435 | 468 | static int _nof_normal_calls; // total # of calls |
duke@435 | 469 | static int _nof_optimized_calls; // total # of statically-bound calls |
duke@435 | 470 | static int _nof_inlined_calls; // total # of inlined normal calls |
duke@435 | 471 | static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial) |
duke@435 | 472 | static int _nof_inlined_static_calls; // total # of inlined static calls |
duke@435 | 473 | // stats for compiled interface calls |
duke@435 | 474 | static int _nof_interface_calls; // total # of compiled calls |
duke@435 | 475 | static int _nof_optimized_interface_calls; // total # of statically-bound interface calls |
duke@435 | 476 | static int _nof_inlined_interface_calls; // total # of inlined interface calls |
duke@435 | 477 | static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls |
duke@435 | 478 | // stats for runtime exceptions |
duke@435 | 479 | static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining |
duke@435 | 480 | |
duke@435 | 481 | public: // for compiler |
duke@435 | 482 | static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; } |
duke@435 | 483 | static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; } |
duke@435 | 484 | static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; } |
duke@435 | 485 | static address nof_static_calls_addr() { return (address)&_nof_static_calls; } |
duke@435 | 486 | static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; } |
duke@435 | 487 | static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; } |
duke@435 | 488 | static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; } |
duke@435 | 489 | static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; } |
duke@435 | 490 | static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; } |
duke@435 | 491 | static void print_call_statistics(int comp_total); |
duke@435 | 492 | static void print_statistics(); |
duke@435 | 493 | static void print_ic_miss_histogram(); |
duke@435 | 494 | |
duke@435 | 495 | #endif // PRODUCT |
duke@435 | 496 | }; |
duke@435 | 497 | |
duke@435 | 498 | |
duke@435 | 499 | // --------------------------------------------------------------------------- |
duke@435 | 500 | // Implementation of AdapterHandlerLibrary |
duke@435 | 501 | // |
duke@435 | 502 | // This library manages argument marshaling adapters and native wrappers. |
duke@435 | 503 | // There are 2 flavors of adapters: I2C and C2I. |
duke@435 | 504 | // |
duke@435 | 505 | // The I2C flavor takes a stock interpreted call setup, marshals the arguments |
duke@435 | 506 | // for a Java-compiled call, and jumps to Rmethod-> code()-> |
duke@435 | 507 | // instructions_begin(). It is broken to call it without an nmethod assigned. |
duke@435 | 508 | // The usual behavior is to lift any register arguments up out of the stack |
duke@435 | 509 | // and possibly re-pack the extra arguments to be contigious. I2C adapters |
duke@435 | 510 | // will save what the interpreter's stack pointer will be after arguments are |
duke@435 | 511 | // popped, then adjust the interpreter's frame size to force alignment and |
duke@435 | 512 | // possibly to repack the arguments. After re-packing, it jumps to the |
duke@435 | 513 | // compiled code start. There are no safepoints in this adapter code and a GC |
duke@435 | 514 | // cannot happen while marshaling is in progress. |
duke@435 | 515 | // |
duke@435 | 516 | // The C2I flavor takes a stock compiled call setup plus the target method in |
duke@435 | 517 | // Rmethod, marshals the arguments for an interpreted call and jumps to |
duke@435 | 518 | // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been |
duke@435 | 519 | // setup. Compiled frames are fixed-size and the args are likely not in the |
duke@435 | 520 | // right place. Hence all the args will likely be copied into the |
duke@435 | 521 | // interpreter's frame, forcing that frame to grow. The compiled frame's |
duke@435 | 522 | // outgoing stack args will be dead after the copy. |
duke@435 | 523 | // |
duke@435 | 524 | // Native wrappers, like adapters, marshal arguments. Unlike adapters they |
duke@435 | 525 | // also perform an offical frame push & pop. They have a call to the native |
duke@435 | 526 | // routine in their middles and end in a return (instead of ending in a jump). |
duke@435 | 527 | // The native wrappers are stored in real nmethods instead of the BufferBlobs |
duke@435 | 528 | // used by the adapters. The code generation happens here because it's very |
duke@435 | 529 | // similar to what the adapters have to do. |
duke@435 | 530 | |
duke@435 | 531 | class AdapterHandlerEntry : public CHeapObj { |
duke@435 | 532 | private: |
duke@435 | 533 | address _i2c_entry; |
duke@435 | 534 | address _c2i_entry; |
duke@435 | 535 | address _c2i_unverified_entry; |
duke@435 | 536 | |
duke@435 | 537 | public: |
kamg@551 | 538 | |
kamg@551 | 539 | // The name we give all buffer blobs |
kamg@551 | 540 | static const char* name; |
kamg@551 | 541 | |
duke@435 | 542 | AdapterHandlerEntry(address i2c_entry, address c2i_entry, address c2i_unverified_entry): |
duke@435 | 543 | _i2c_entry(i2c_entry), |
duke@435 | 544 | _c2i_entry(c2i_entry), |
duke@435 | 545 | _c2i_unverified_entry(c2i_unverified_entry) { |
duke@435 | 546 | } |
duke@435 | 547 | |
duke@435 | 548 | address get_i2c_entry() { return _i2c_entry; } |
duke@435 | 549 | address get_c2i_entry() { return _c2i_entry; } |
duke@435 | 550 | address get_c2i_unverified_entry() { return _c2i_unverified_entry; } |
kamg@551 | 551 | |
duke@435 | 552 | void relocate(address new_base); |
duke@435 | 553 | #ifndef PRODUCT |
duke@435 | 554 | void print(); |
duke@435 | 555 | #endif /* PRODUCT */ |
duke@435 | 556 | }; |
duke@435 | 557 | |
duke@435 | 558 | class AdapterHandlerLibrary: public AllStatic { |
duke@435 | 559 | private: |
kvn@1177 | 560 | static BufferBlob* _buffer; // the temporary code buffer in CodeCache |
kamg@551 | 561 | static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection |
kamg@551 | 562 | static GrowableArray<AdapterHandlerEntry*> * _handlers; // the corresponding handlers |
duke@435 | 563 | enum { |
duke@435 | 564 | AbstractMethodHandler = 1 // special handler for abstract methods |
duke@435 | 565 | }; |
kvn@1177 | 566 | static BufferBlob* buffer_blob(); |
duke@435 | 567 | static void initialize(); |
duke@435 | 568 | static int get_create_adapter_index(methodHandle method); |
kamg@551 | 569 | static address get_i2c_entry( int index ) { |
kamg@551 | 570 | return get_entry(index)->get_i2c_entry(); |
kamg@551 | 571 | } |
kamg@551 | 572 | static address get_c2i_entry( int index ) { |
kamg@551 | 573 | return get_entry(index)->get_c2i_entry(); |
kamg@551 | 574 | } |
kamg@551 | 575 | static address get_c2i_unverified_entry( int index ) { |
kamg@551 | 576 | return get_entry(index)->get_c2i_unverified_entry(); |
kamg@551 | 577 | } |
duke@435 | 578 | |
duke@435 | 579 | public: |
kamg@551 | 580 | static AdapterHandlerEntry* get_entry( int index ) { return _handlers->at(index); } |
duke@435 | 581 | static nmethod* create_native_wrapper(methodHandle method); |
kamg@551 | 582 | static AdapterHandlerEntry* get_adapter(methodHandle method) { |
kamg@551 | 583 | return get_entry(get_create_adapter_index(method)); |
kamg@551 | 584 | } |
kamg@551 | 585 | #ifdef HAVE_DTRACE_H |
kamg@551 | 586 | static nmethod* create_dtrace_nmethod (methodHandle method); |
kamg@551 | 587 | #endif // HAVE_DTRACE_H |
duke@435 | 588 | |
duke@435 | 589 | #ifndef PRODUCT |
duke@435 | 590 | static void print_handler(CodeBlob* b); |
duke@435 | 591 | static bool contains(CodeBlob* b); |
duke@435 | 592 | #endif /* PRODUCT */ |
duke@435 | 593 | |
duke@435 | 594 | }; |