1 /* 2 * Copyright (c) 2011, 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 #include "precompiled.hpp" 25 #include "asm/register.hpp" 26 #include "classfile/vmSymbols.hpp" 27 #include "code/compiledIC.hpp" 28 #include "code/vmreg.inline.hpp" 29 #include "compiler/compileBroker.hpp" 30 #include "compiler/disassembler.hpp" 31 #include "jvmci/jvmciEnv.hpp" 32 #include "jvmci/jvmciCompiler.hpp" 33 #include "jvmci/jvmciCodeInstaller.hpp" 34 #include "jvmci/jvmciJavaClasses.hpp" 35 #include "jvmci/jvmciCompilerToVM.hpp" 36 #include "jvmci/jvmciRuntime.hpp" 37 #include "oops/oop.inline.hpp" 38 #include "oops/objArrayOop.inline.hpp" 39 #include "runtime/javaCalls.hpp" 40 41 // frequently used constants 42 // Allocate them with new so they are never destroyed (otherwise, a 43 // forced exit could destroy these objects while they are still in 44 // use). 45 ConstantOopWriteValue* CodeInstaller::_oop_null_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantOopWriteValue(NULL); 46 ConstantIntValue* CodeInstaller::_int_m1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(-1); 47 ConstantIntValue* CodeInstaller::_int_0_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(0); 48 ConstantIntValue* CodeInstaller::_int_1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(1); 49 ConstantIntValue* CodeInstaller::_int_2_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(2); 50 LocationValue* CodeInstaller::_illegal_value = new (ResourceObj::C_HEAP, mtCompiler) LocationValue(Location()); 51 52 Method* getMethodFromHotSpotMethod(oop hotspot_method) { 53 assert(hotspot_method != NULL && hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass()), "sanity"); 54 return CompilerToVM::asMethod(hotspot_method); 55 } 56 57 VMReg getVMRegFromLocation(Handle location, int total_frame_size, TRAPS) { 58 if (location.is_null()) { 59 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 60 } 61 62 Handle reg(THREAD, code_Location::reg(location)); 63 jint offset = code_Location::offset(location); 64 65 if (reg.not_null()) { 66 // register 67 jint number = code_Register::number(reg); 68 VMReg vmReg = CodeInstaller::get_hotspot_reg(number, CHECK_NULL); 69 if (offset % 4 == 0) { 70 return vmReg->next(offset / 4); 71 } else { 72 JVMCI_ERROR_NULL("unaligned subregister offset %d in oop map", offset); 73 } 74 } else { 75 // stack slot 76 if (offset % 4 == 0) { 77 VMReg vmReg = VMRegImpl::stack2reg(offset / 4); 78 if (!OopMapValue::legal_vm_reg_name(vmReg)) { 79 // This restriction only applies to VMRegs that are used in OopMap but 80 // since that's the only use of VMRegs it's simplest to put this test 81 // here. This test should also be equivalent legal_vm_reg_name but JVMCI 82 // clients can use max_oop_map_stack_stack_offset to detect this problem 83 // directly. The asserts just ensure that the tests are in agreement. 84 assert(offset > CompilerToVM::Data::max_oop_map_stack_offset(), "illegal VMReg"); 85 JVMCI_ERROR_NULL("stack offset %d is too large to be encoded in OopMap (max %d)", 86 offset, CompilerToVM::Data::max_oop_map_stack_offset()); 87 } 88 assert(OopMapValue::legal_vm_reg_name(vmReg), "illegal VMReg"); 89 return vmReg; 90 } else { 91 JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset); 92 } 93 } 94 } 95 96 // creates a HotSpot oop map out of the byte arrays provided by DebugInfo 97 OopMap* CodeInstaller::create_oop_map(Handle debug_info, TRAPS) { 98 Handle reference_map(THREAD, DebugInfo::referenceMap(debug_info)); 99 if (reference_map.is_null()) { 100 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 101 } 102 if (!reference_map->is_a(HotSpotReferenceMap::klass())) { 103 JVMCI_ERROR_NULL("unknown reference map: %s", reference_map->klass()->signature_name()); 104 } 105 if (HotSpotReferenceMap::maxRegisterSize(reference_map) > 16) { 106 _has_wide_vector = true; 107 } 108 OopMap* map = new OopMap(_total_frame_size, _parameter_count); 109 objArrayHandle objects(THREAD, HotSpotReferenceMap::objects(reference_map)); 110 objArrayHandle derivedBase(THREAD, HotSpotReferenceMap::derivedBase(reference_map)); 111 typeArrayHandle sizeInBytes(THREAD, HotSpotReferenceMap::sizeInBytes(reference_map)); 112 if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) { 113 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 114 } 115 if (objects->length() != derivedBase->length() || objects->length() != sizeInBytes->length()) { 116 JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", objects->length(), derivedBase->length(), sizeInBytes->length()); 117 } 118 for (int i = 0; i < objects->length(); i++) { 119 Handle location(THREAD, objects->obj_at(i)); 120 Handle baseLocation(THREAD, derivedBase->obj_at(i)); 121 int bytes = sizeInBytes->int_at(i); 122 123 VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, CHECK_NULL); 124 if (baseLocation.not_null()) { 125 // derived oop 126 #ifdef _LP64 127 if (bytes == 8) { 128 #else 129 if (bytes == 4) { 130 #endif 131 VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, CHECK_NULL); 132 map->set_derived_oop(vmReg, baseReg); 133 } else { 134 JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes); 135 } 136 #ifdef _LP64 137 } else if (bytes == 8) { 138 // wide oop 139 map->set_oop(vmReg); 140 } else if (bytes == 4) { 141 // narrow oop 142 map->set_narrowoop(vmReg); 143 #else 144 } else if (bytes == 4) { 145 map->set_oop(vmReg); 146 #endif 147 } else { 148 JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes); 149 } 150 } 151 152 Handle callee_save_info(THREAD, (oop) DebugInfo::calleeSaveInfo(debug_info)); 153 if (callee_save_info.not_null()) { 154 objArrayHandle registers(THREAD, RegisterSaveLayout::registers(callee_save_info)); 155 typeArrayHandle slots(THREAD, RegisterSaveLayout::slots(callee_save_info)); 156 for (jint i = 0; i < slots->length(); i++) { 157 Handle jvmci_reg (THREAD, registers->obj_at(i)); 158 jint jvmci_reg_number = code_Register::number(jvmci_reg); 159 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL); 160 // HotSpot stack slots are 4 bytes 161 jint jvmci_slot = slots->int_at(i); 162 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word; 163 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot); 164 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg); 165 #ifdef _LP64 166 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp) 167 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1); 168 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next()); 169 #endif 170 } 171 } 172 return map; 173 } 174 175 AOTOopRecorder::AOTOopRecorder(Arena* arena, bool deduplicate) : OopRecorder(arena, deduplicate) { 176 _meta_strings = new GrowableArray<const char*>(); 177 } 178 179 int AOTOopRecorder::nr_meta_strings() const { 180 return _meta_strings->length(); 181 } 182 183 const char* AOTOopRecorder::meta_element(int pos) const { 184 return _meta_strings->at(pos); 185 } 186 187 int AOTOopRecorder::find_index(Metadata* h) { 188 int index = this->OopRecorder::find_index(h); 189 190 Klass* klass = NULL; 191 if (h->is_klass()) { 192 klass = (Klass*) h; 193 record_meta_string(klass->signature_name(), index); 194 } else if (h->is_method()) { 195 Method* method = (Method*) h; 196 // Need klass->signature_name() in method name 197 klass = method->method_holder(); 198 const char* klass_name = klass->signature_name(); 199 int klass_name_len = (int)strlen(klass_name); 200 Symbol* method_name = method->name(); 201 Symbol* signature = method->signature(); 202 int method_name_len = method_name->utf8_length(); 203 int method_sign_len = signature->utf8_length(); 204 int len = klass_name_len + 1 + method_name_len + method_sign_len; 205 char* dest = NEW_RESOURCE_ARRAY(char, len + 1); 206 strcpy(dest, klass_name); 207 dest[klass_name_len] = '.'; 208 strcpy(&dest[klass_name_len + 1], method_name->as_C_string()); 209 strcpy(&dest[klass_name_len + 1 + method_name_len], signature->as_C_string()); 210 dest[len] = 0; 211 record_meta_string(dest, index); 212 } 213 214 return index; 215 } 216 217 int AOTOopRecorder::find_index(jobject h) { 218 if (h == NULL) { 219 return 0; 220 } 221 oop javaMirror = JNIHandles::resolve(h); 222 Klass* klass = java_lang_Class::as_Klass(javaMirror); 223 return find_index(klass); 224 } 225 226 void AOTOopRecorder::record_meta_string(const char* name, int index) { 227 assert(index > 0, "must be 1..n"); 228 index -= 1; // reduce by one to convert to array index 229 230 if (index < _meta_strings->length()) { 231 assert(strcmp(name, _meta_strings->at(index)) == 0, "must match"); 232 } else { 233 assert(index == _meta_strings->length(), "must be last"); 234 _meta_strings->append(name); 235 } 236 } 237 238 void* CodeInstaller::record_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) { 239 /* 240 * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base 241 * class is in general not equal to the pointer of the subclass. When patching metaspace pointers, 242 * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the 243 * base class (Metadata* or MetaspaceObj*). 244 */ 245 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant); 246 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) { 247 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj)); 248 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass)); 249 int index = _oop_recorder->find_index(klass); 250 section->relocate(dest, metadata_Relocation::spec(index)); 251 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string()); 252 return klass; 253 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) { 254 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj); 255 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method)); 256 int index = _oop_recorder->find_index(method); 257 section->relocate(dest, metadata_Relocation::spec(index)); 258 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string()); 259 return method; 260 } else { 261 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name()); 262 } 263 } 264 265 #ifdef _LP64 266 narrowKlass CodeInstaller::record_narrow_metadata_reference(CodeSection* section, address dest, Handle constant, TRAPS) { 267 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant); 268 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer"); 269 270 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) { 271 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name()); 272 } 273 274 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj)); 275 int index = _oop_recorder->find_index(klass); 276 section->relocate(dest, metadata_Relocation::spec(index)); 277 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string()); 278 return Klass::encode_klass(klass); 279 } 280 #endif 281 282 Location::Type CodeInstaller::get_oop_type(Thread* thread, Handle value) { 283 Handle valueKind(thread, Value::valueKind(value)); 284 Handle platformKind(thread, ValueKind::platformKind(valueKind)); 285 286 if (platformKind == word_kind()) { 287 return Location::oop; 288 } else { 289 return Location::narrowoop; 290 } 291 } 292 293 ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) { 294 second = NULL; 295 if (value.is_null()) { 296 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 297 } else if (value == Value::ILLEGAL()) { 298 if (type != T_ILLEGAL) { 299 JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type)); 300 } 301 return _illegal_value; 302 } else if (value->is_a(RegisterValue::klass())) { 303 Handle reg(THREAD, RegisterValue::reg(value)); 304 jint number = code_Register::number(reg); 305 VMReg hotspotRegister = get_hotspot_reg(number, CHECK_NULL); 306 if (is_general_purpose_reg(hotspotRegister)) { 307 Location::Type locationType; 308 if (type == T_OBJECT) { 309 locationType = get_oop_type(THREAD, value); 310 } else if (type == T_LONG) { 311 locationType = Location::lng; 312 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) { 313 locationType = Location::int_in_long; 314 } else { 315 JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type)); 316 } 317 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister)); 318 if (type == T_LONG) { 319 second = value; 320 } 321 return value; 322 } else { 323 Location::Type locationType; 324 if (type == T_FLOAT) { 325 // this seems weird, but the same value is used in c1_LinearScan 326 locationType = Location::normal; 327 } else if (type == T_DOUBLE) { 328 locationType = Location::dbl; 329 } else { 330 JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type)); 331 } 332 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister)); 333 if (type == T_DOUBLE) { 334 second = value; 335 } 336 return value; 337 } 338 } else if (value->is_a(StackSlot::klass())) { 339 jint offset = StackSlot::offset(value); 340 if (StackSlot::addFrameSize(value)) { 341 offset += _total_frame_size; 342 } 343 344 Location::Type locationType; 345 if (type == T_OBJECT) { 346 locationType = get_oop_type(THREAD, value); 347 } else if (type == T_LONG) { 348 locationType = Location::lng; 349 } else if (type == T_DOUBLE) { 350 locationType = Location::dbl; 351 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) { 352 locationType = Location::normal; 353 } else { 354 JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type)); 355 } 356 ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset)); 357 if (type == T_DOUBLE || type == T_LONG) { 358 second = value; 359 } 360 return value; 361 } else if (value->is_a(JavaConstant::klass())) { 362 if (value->is_a(PrimitiveConstant::klass())) { 363 if (value->is_a(RawConstant::klass())) { 364 jlong prim = PrimitiveConstant::primitive(value); 365 return new ConstantLongValue(prim); 366 } else { 367 Handle primitive_constant_kind(THREAD, PrimitiveConstant::kind(value)); 368 BasicType constantType = JVMCIRuntime::kindToBasicType(primitive_constant_kind, CHECK_NULL); 369 if (type != constantType) { 370 JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType)); 371 } 372 if (type == T_INT || type == T_FLOAT) { 373 jint prim = (jint)PrimitiveConstant::primitive(value); 374 switch (prim) { 375 case -1: return _int_m1_scope_value; 376 case 0: return _int_0_scope_value; 377 case 1: return _int_1_scope_value; 378 case 2: return _int_2_scope_value; 379 default: return new ConstantIntValue(prim); 380 } 381 } else if (type == T_LONG || type == T_DOUBLE) { 382 jlong prim = PrimitiveConstant::primitive(value); 383 second = _int_1_scope_value; 384 return new ConstantLongValue(prim); 385 } else { 386 JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type)); 387 } 388 } 389 } else if (value->is_a(NullConstant::klass()) || value->is_a(HotSpotCompressedNullConstant::klass())) { 390 if (type == T_OBJECT) { 391 return _oop_null_scope_value; 392 } else { 393 JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type)); 394 } 395 } else if (value->is_a(HotSpotObjectConstantImpl::klass())) { 396 if (type == T_OBJECT) { 397 oop obj = HotSpotObjectConstantImpl::object(value); 398 if (obj == NULL) { 399 JVMCI_ERROR_NULL("null value must be in NullConstant"); 400 } 401 return new ConstantOopWriteValue(JNIHandles::make_local(obj)); 402 } else { 403 JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type)); 404 } 405 } 406 } else if (value->is_a(VirtualObject::klass())) { 407 if (type == T_OBJECT) { 408 int id = VirtualObject::id(value); 409 if (0 <= id && id < objects->length()) { 410 ScopeValue* object = objects->at(id); 411 if (object != NULL) { 412 return object; 413 } 414 } 415 JVMCI_ERROR_NULL("unknown virtual object id %d", id); 416 } else { 417 JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type)); 418 } 419 } 420 421 JVMCI_ERROR_NULL("unexpected value in scope: %s", value->klass()->signature_name()) 422 } 423 424 void CodeInstaller::record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) { 425 // Might want a HandleMark here. 426 Handle type(THREAD, VirtualObject::type(value)); 427 int id = VirtualObject::id(value); 428 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type); 429 Klass* klass = java_lang_Class::as_Klass(javaMirror); 430 bool isLongArray = klass == Universe::longArrayKlassObj(); 431 432 objArrayHandle values(THREAD, VirtualObject::values(value)); 433 objArrayHandle slotKinds(THREAD, VirtualObject::slotKinds(value)); 434 for (jint i = 0; i < values->length(); i++) { 435 HandleMark hm(THREAD); 436 ScopeValue* cur_second = NULL; 437 Handle object(THREAD, values->obj_at(i)); 438 Handle slot_kind (THREAD, slotKinds->obj_at(i)); 439 BasicType type = JVMCIRuntime::kindToBasicType(slot_kind, CHECK); 440 ScopeValue* value = get_scope_value(object, type, objects, cur_second, CHECK); 441 442 if (isLongArray && cur_second == NULL) { 443 // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations. 444 // add an int 0 constant 445 cur_second = _int_0_scope_value; 446 } 447 448 if (cur_second != NULL) { 449 sv->field_values()->append(cur_second); 450 } 451 assert(value != NULL, "missing value"); 452 sv->field_values()->append(value); 453 } 454 } 455 456 MonitorValue* CodeInstaller::get_monitor_value(Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) { 457 if (value.is_null()) { 458 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 459 } 460 if (!value->is_a(StackLockValue::klass())) { 461 JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", value->klass()->signature_name()); 462 } 463 464 ScopeValue* second = NULL; 465 Handle stack_lock_owner(THREAD, StackLockValue::owner(value)); 466 ScopeValue* owner_value = get_scope_value(stack_lock_owner, T_OBJECT, objects, second, CHECK_NULL); 467 assert(second == NULL, "monitor cannot occupy two stack slots"); 468 469 Handle stack_lock_slot(THREAD, StackLockValue::slot(value)); 470 ScopeValue* lock_data_value = get_scope_value(stack_lock_slot, T_LONG, objects, second, CHECK_NULL); 471 assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots"); 472 assert(lock_data_value->is_location(), "invalid monitor location"); 473 Location lock_data_loc = ((LocationValue*)lock_data_value)->location(); 474 475 bool eliminated = false; 476 if (StackLockValue::eliminated(value)) { 477 eliminated = true; 478 } 479 480 return new MonitorValue(owner_value, lock_data_loc, eliminated); 481 } 482 483 void CodeInstaller::initialize_dependencies(oop compiled_code, OopRecorder* recorder, TRAPS) { 484 JavaThread* thread = JavaThread::current(); 485 assert(THREAD == thread, ""); 486 CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL; 487 _oop_recorder = recorder; 488 _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL); 489 objArrayHandle assumptions(THREAD, HotSpotCompiledCode::assumptions(compiled_code)); 490 if (!assumptions.is_null()) { 491 int length = assumptions->length(); 492 for (int i = 0; i < length; ++i) { 493 Handle assumption(THREAD, assumptions->obj_at(i)); 494 if (!assumption.is_null()) { 495 if (assumption->klass() == Assumptions_NoFinalizableSubclass::klass()) { 496 assumption_NoFinalizableSubclass(THREAD, assumption); 497 } else if (assumption->klass() == Assumptions_ConcreteSubtype::klass()) { 498 assumption_ConcreteSubtype(THREAD, assumption); 499 } else if (assumption->klass() == Assumptions_LeafType::klass()) { 500 assumption_LeafType(THREAD, assumption); 501 } else if (assumption->klass() == Assumptions_ConcreteMethod::klass()) { 502 assumption_ConcreteMethod(THREAD, assumption); 503 } else if (assumption->klass() == Assumptions_CallSiteTargetValue::klass()) { 504 assumption_CallSiteTargetValue(THREAD, assumption); 505 } else { 506 JVMCI_ERROR("unexpected Assumption subclass %s", assumption->klass()->signature_name()); 507 } 508 } 509 } 510 } 511 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { 512 objArrayHandle methods(THREAD, HotSpotCompiledCode::methods(compiled_code)); 513 if (!methods.is_null()) { 514 int length = methods->length(); 515 for (int i = 0; i < length; ++i) { 516 Handle method_handle(THREAD, methods->obj_at(i)); 517 methodHandle method = getMethodFromHotSpotMethod(method_handle()); 518 _dependencies->assert_evol_method(method()); 519 } 520 } 521 } 522 } 523 524 RelocBuffer::~RelocBuffer() { 525 if (_buffer != NULL) { 526 FREE_C_HEAP_ARRAY(char, _buffer); 527 } 528 } 529 530 address RelocBuffer::begin() const { 531 if (_buffer != NULL) { 532 return (address) _buffer; 533 } 534 return (address) _static_buffer; 535 } 536 537 void RelocBuffer::set_size(size_t bytes) { 538 assert(bytes <= _size, "can't grow in size!"); 539 _size = bytes; 540 } 541 542 void RelocBuffer::ensure_size(size_t bytes) { 543 assert(_buffer == NULL, "can only be used once"); 544 assert(_size == 0, "can only be used once"); 545 if (bytes >= RelocBuffer::stack_size) { 546 _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtInternal); 547 } 548 _size = bytes; 549 } 550 551 JVMCIEnv::CodeInstallResult CodeInstaller::gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS) { 552 CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata"); 553 jobject compiled_code_obj = JNIHandles::make_local(compiled_code()); 554 AOTOopRecorder* recorder = new AOTOopRecorder(&_arena, true); 555 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK); 556 557 metadata.set_oop_recorder(recorder); 558 559 // Get instructions and constants CodeSections early because we need it. 560 _instructions = buffer.insts(); 561 _constants = buffer.consts(); 562 563 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK); 564 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, false, CHECK_OK); 565 if (result != JVMCIEnv::ok) { 566 return result; 567 } 568 569 _debug_recorder->pcs_size(); // create the sentinel record 570 571 assert(_debug_recorder->pcs_length() >= 2, "must be at least 2"); 572 573 metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length()); 574 metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size()); 575 metadata.set_exception_table(&_exception_handler_table); 576 577 RelocBuffer* reloc_buffer = metadata.get_reloc_buffer(); 578 579 reloc_buffer->ensure_size(buffer.total_relocation_size()); 580 size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true); 581 reloc_buffer->set_size(size); 582 return JVMCIEnv::ok; 583 } 584 585 // constructor used to create a method 586 JVMCIEnv::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS) { 587 CodeBuffer buffer("JVMCI Compiler CodeBuffer"); 588 jobject compiled_code_obj = JNIHandles::make_local(compiled_code()); 589 OopRecorder* recorder = new OopRecorder(&_arena, true); 590 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK); 591 592 // Get instructions and constants CodeSections early because we need it. 593 _instructions = buffer.insts(); 594 _constants = buffer.consts(); 595 596 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK); 597 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, true, CHECK_OK); 598 if (result != JVMCIEnv::ok) { 599 return result; 600 } 601 602 int stack_slots = _total_frame_size / HeapWordSize; // conversion to words 603 604 if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) { 605 oop stubName = HotSpotCompiledCode::name(compiled_code_obj); 606 char* name = strdup(java_lang_String::as_utf8_string(stubName)); 607 cb = RuntimeStub::new_runtime_stub(name, 608 &buffer, 609 CodeOffsets::frame_never_safe, 610 stack_slots, 611 _debug_recorder->_oopmaps, 612 false); 613 result = JVMCIEnv::ok; 614 } else { 615 nmethod* nm = NULL; 616 methodHandle method = getMethodFromHotSpotMethod(HotSpotCompiledNmethod::method(compiled_code)); 617 jint entry_bci = HotSpotCompiledNmethod::entryBCI(compiled_code); 618 jint id = HotSpotCompiledNmethod::id(compiled_code); 619 bool has_unsafe_access = HotSpotCompiledNmethod::hasUnsafeAccess(compiled_code) == JNI_TRUE; 620 JVMCIEnv* env = (JVMCIEnv*) (address) HotSpotCompiledNmethod::jvmciEnv(compiled_code); 621 if (id == -1) { 622 // Make sure a valid compile_id is associated with every compile 623 id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci); 624 } 625 result = JVMCIEnv::register_method(method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer, 626 stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table, 627 compiler, _debug_recorder, _dependencies, env, id, 628 has_unsafe_access, _has_wide_vector, installed_code, compiled_code, speculation_log); 629 cb = nm->as_codeblob_or_null(); 630 if (nm != NULL && env == NULL) { 631 DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler); 632 bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption; 633 if (printnmethods || PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers) { 634 nm->print_nmethod(printnmethods); 635 } 636 DirectivesStack::release(directive); 637 } 638 } 639 640 if (cb != NULL) { 641 // Make sure the pre-calculated constants section size was correct. 642 guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size); 643 } 644 return result; 645 } 646 647 void CodeInstaller::initialize_fields(oop target, oop compiled_code, TRAPS) { 648 if (compiled_code->is_a(HotSpotCompiledNmethod::klass())) { 649 Handle hotspotJavaMethod(THREAD, HotSpotCompiledNmethod::method(compiled_code)); 650 methodHandle method = getMethodFromHotSpotMethod(hotspotJavaMethod()); 651 _parameter_count = method->size_of_parameters(); 652 TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string()); 653 } else { 654 // Must be a HotSpotCompiledRuntimeStub. 655 // Only used in OopMap constructor for non-product builds 656 _parameter_count = 0; 657 } 658 _sites_handle = JNIHandles::make_local(HotSpotCompiledCode::sites(compiled_code)); 659 660 _code_handle = JNIHandles::make_local(HotSpotCompiledCode::targetCode(compiled_code)); 661 _code_size = HotSpotCompiledCode::targetCodeSize(compiled_code); 662 _total_frame_size = HotSpotCompiledCode::totalFrameSize(compiled_code); 663 664 oop deoptRescueSlot = HotSpotCompiledCode::deoptRescueSlot(compiled_code); 665 if (deoptRescueSlot == NULL) { 666 _orig_pc_offset = -1; 667 } else { 668 _orig_pc_offset = StackSlot::offset(deoptRescueSlot); 669 if (StackSlot::addFrameSize(deoptRescueSlot)) { 670 _orig_pc_offset += _total_frame_size; 671 } 672 if (_orig_pc_offset < 0) { 673 JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset); 674 } 675 } 676 677 // Pre-calculate the constants section size. This is required for PC-relative addressing. 678 _data_section_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSection(compiled_code)); 679 if ((_constants->alignment() % HotSpotCompiledCode::dataSectionAlignment(compiled_code)) != 0) { 680 JVMCI_ERROR("invalid data section alignment: %d", HotSpotCompiledCode::dataSectionAlignment(compiled_code)); 681 } 682 _constants_size = data_section()->length(); 683 684 _data_section_patches_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSectionPatches(compiled_code)); 685 686 #ifndef PRODUCT 687 _comments_handle = JNIHandles::make_local(HotSpotCompiledCode::comments(compiled_code)); 688 #endif 689 690 _next_call_type = INVOKE_INVALID; 691 692 _has_wide_vector = false; 693 694 oop arch = TargetDescription::arch(target); 695 _word_kind_handle = JNIHandles::make_local(Architecture::wordKind(arch)); 696 } 697 698 int CodeInstaller::estimate_stubs_size(TRAPS) { 699 // Estimate the number of static and aot call stubs that might be emitted. 700 int static_call_stubs = 0; 701 int aot_call_stubs = 0; 702 objArrayOop sites = this->sites(); 703 for (int i = 0; i < sites->length(); i++) { 704 oop site = sites->obj_at(i); 705 if (site != NULL) { 706 if (site->is_a(site_Mark::klass())) { 707 oop id_obj = site_Mark::id(site); 708 if (id_obj != NULL) { 709 if (!java_lang_boxing_object::is_instance(id_obj, T_INT)) { 710 JVMCI_ERROR_0("expected Integer id, got %s", id_obj->klass()->signature_name()); 711 } 712 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT)); 713 if (id == INVOKESTATIC || id == INVOKESPECIAL) { 714 static_call_stubs++; 715 } 716 } 717 } 718 if (UseAOT && site->is_a(site_Call::klass())) { 719 oop target = site_Call::target(site); 720 InstanceKlass* target_klass = InstanceKlass::cast(target->klass()); 721 if (!target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) { 722 // Add far aot trampolines. 723 aot_call_stubs++; 724 } 725 } 726 } 727 } 728 int size = static_call_stubs * CompiledStaticCall::to_interp_stub_size(); 729 #if INCLUDE_AOT 730 size += aot_call_stubs * CompiledStaticCall::to_aot_stub_size(); 731 #endif 732 return size; 733 } 734 735 // perform data and call relocation on the CodeBuffer 736 JVMCIEnv::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, bool check_size, TRAPS) { 737 HandleMark hm; 738 objArrayHandle sites(THREAD, this->sites()); 739 int locs_buffer_size = sites->length() * (relocInfo::length_limit + sizeof(relocInfo)); 740 741 // Allocate enough space in the stub section for the static call 742 // stubs. Stubs have extra relocs but they are managed by the stub 743 // section itself so they don't need to be accounted for in the 744 // locs_buffer above. 745 int stubs_size = estimate_stubs_size(CHECK_OK); 746 int total_size = round_to(_code_size, buffer.insts()->alignment()) + round_to(_constants_size, buffer.consts()->alignment()) + round_to(stubs_size, buffer.stubs()->alignment()); 747 748 if (check_size && total_size > JVMCINMethodSizeLimit) { 749 return JVMCIEnv::code_too_large; 750 } 751 752 buffer.initialize(total_size, locs_buffer_size); 753 if (buffer.blob() == NULL) { 754 return JVMCIEnv::cache_full; 755 } 756 buffer.initialize_stubs_size(stubs_size); 757 buffer.initialize_consts_size(_constants_size); 758 759 _debug_recorder = new DebugInformationRecorder(_oop_recorder); 760 _debug_recorder->set_oopmaps(new OopMapSet()); 761 762 buffer.initialize_oop_recorder(_oop_recorder); 763 764 // copy the constant data into the newly created CodeBuffer 765 address end_data = _constants->start() + _constants_size; 766 memcpy(_constants->start(), data_section()->base(T_BYTE), _constants_size); 767 _constants->set_end(end_data); 768 769 // copy the code into the newly created CodeBuffer 770 address end_pc = _instructions->start() + _code_size; 771 guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code"); 772 memcpy(_instructions->start(), code()->base(T_BYTE), _code_size); 773 _instructions->set_end(end_pc); 774 775 for (int i = 0; i < data_section_patches()->length(); i++) { 776 HandleMark hm(THREAD); 777 Handle patch(THREAD, data_section_patches()->obj_at(i)); 778 if (patch.is_null()) { 779 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); 780 } 781 Handle reference(THREAD, site_DataPatch::reference(patch)); 782 if (reference.is_null()) { 783 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); 784 } 785 if (!reference->is_a(site_ConstantReference::klass())) { 786 JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name()); 787 } 788 Handle constant(THREAD, site_ConstantReference::constant(reference)); 789 if (constant.is_null()) { 790 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); 791 } 792 address dest = _constants->start() + site_Site::pcOffset(patch); 793 if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) { 794 if (HotSpotMetaspaceConstantImpl::compressed(constant)) { 795 #ifdef _LP64 796 *((narrowKlass*) dest) = record_narrow_metadata_reference(_constants, dest, constant, CHECK_OK); 797 #else 798 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode"); 799 #endif 800 } else { 801 *((void**) dest) = record_metadata_reference(_constants, dest, constant, CHECK_OK); 802 } 803 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) { 804 Handle obj(THREAD, HotSpotObjectConstantImpl::object(constant)); 805 jobject value = JNIHandles::make_local(obj()); 806 int oop_index = _oop_recorder->find_index(value); 807 808 if (HotSpotObjectConstantImpl::compressed(constant)) { 809 #ifdef _LP64 810 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const); 811 #else 812 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode"); 813 #endif 814 } else { 815 _constants->relocate(dest, oop_Relocation::spec(oop_index)); 816 } 817 } else { 818 JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name()); 819 } 820 } 821 jint last_pc_offset = -1; 822 for (int i = 0; i < sites->length(); i++) { 823 HandleMark hm(THREAD); 824 Handle site(THREAD, sites->obj_at(i)); 825 if (site.is_null()) { 826 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); 827 } 828 829 jint pc_offset = site_Site::pcOffset(site); 830 831 if (site->is_a(site_Call::klass())) { 832 TRACE_jvmci_4("call at %i", pc_offset); 833 site_Call(buffer, pc_offset, site, CHECK_OK); 834 } else if (site->is_a(site_Infopoint::klass())) { 835 // three reasons for infopoints denote actual safepoints 836 oop reason = site_Infopoint::reason(site); 837 if (site_InfopointReason::SAFEPOINT() == reason || site_InfopointReason::CALL() == reason || site_InfopointReason::IMPLICIT_EXCEPTION() == reason) { 838 TRACE_jvmci_4("safepoint at %i", pc_offset); 839 site_Safepoint(buffer, pc_offset, site, CHECK_OK); 840 if (_orig_pc_offset < 0) { 841 JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot"); 842 } 843 } else { 844 TRACE_jvmci_4("infopoint at %i", pc_offset); 845 site_Infopoint(buffer, pc_offset, site, CHECK_OK); 846 } 847 } else if (site->is_a(site_DataPatch::klass())) { 848 TRACE_jvmci_4("datapatch at %i", pc_offset); 849 site_DataPatch(buffer, pc_offset, site, CHECK_OK); 850 } else if (site->is_a(site_Mark::klass())) { 851 TRACE_jvmci_4("mark at %i", pc_offset); 852 site_Mark(buffer, pc_offset, site, CHECK_OK); 853 } else if (site->is_a(site_ExceptionHandler::klass())) { 854 TRACE_jvmci_4("exceptionhandler at %i", pc_offset); 855 site_ExceptionHandler(pc_offset, site); 856 } else { 857 JVMCI_ERROR_OK("unexpected site subclass: %s", site->klass()->signature_name()); 858 } 859 last_pc_offset = pc_offset; 860 861 if (SafepointSynchronize::do_call_back()) { 862 // this is a hacky way to force a safepoint check but nothing else was jumping out at me. 863 ThreadToNativeFromVM ttnfv(JavaThread::current()); 864 } 865 } 866 867 #ifndef PRODUCT 868 if (comments() != NULL) { 869 for (int i = 0; i < comments()->length(); i++) { 870 oop comment = comments()->obj_at(i); 871 assert(comment->is_a(HotSpotCompiledCode_Comment::klass()), "cce"); 872 jint offset = HotSpotCompiledCode_Comment::pcOffset(comment); 873 char* text = java_lang_String::as_utf8_string(HotSpotCompiledCode_Comment::text(comment)); 874 buffer.block_comment(offset, text); 875 } 876 } 877 #endif 878 return JVMCIEnv::ok; 879 } 880 881 void CodeInstaller::assumption_NoFinalizableSubclass(Thread* thread, Handle assumption) { 882 Handle receiverType_handle (thread, Assumptions_NoFinalizableSubclass::receiverType(assumption())); 883 Klass* receiverType = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(receiverType_handle)); 884 _dependencies->assert_has_no_finalizable_subclasses(receiverType); 885 } 886 887 void CodeInstaller::assumption_ConcreteSubtype(Thread* thread, Handle assumption) { 888 Handle context_handle (thread, Assumptions_ConcreteSubtype::context(assumption())); 889 Handle subtype_handle (thread, Assumptions_ConcreteSubtype::subtype(assumption())); 890 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle)); 891 Klass* subtype = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(subtype_handle)); 892 893 assert(context->is_abstract(), ""); 894 _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype); 895 } 896 897 void CodeInstaller::assumption_LeafType(Thread* thread, Handle assumption) { 898 Handle context_handle (thread, Assumptions_LeafType::context(assumption())); 899 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle)); 900 901 _dependencies->assert_leaf_type(context); 902 } 903 904 void CodeInstaller::assumption_ConcreteMethod(Thread* thread, Handle assumption) { 905 Handle impl_handle (thread, Assumptions_ConcreteMethod::impl(assumption())); 906 Handle context_handle (thread, Assumptions_ConcreteMethod::context(assumption())); 907 908 methodHandle impl = getMethodFromHotSpotMethod(impl_handle()); 909 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle)); 910 911 _dependencies->assert_unique_concrete_method(context, impl()); 912 } 913 914 void CodeInstaller::assumption_CallSiteTargetValue(Thread* thread, Handle assumption) { 915 Handle callSite(thread, Assumptions_CallSiteTargetValue::callSite(assumption())); 916 Handle methodHandle(thread, Assumptions_CallSiteTargetValue::methodHandle(assumption())); 917 918 _dependencies->assert_call_site_target_value(callSite(), methodHandle()); 919 } 920 921 void CodeInstaller::site_ExceptionHandler(jint pc_offset, Handle exc) { 922 jint handler_offset = site_ExceptionHandler::handlerPos(exc); 923 924 // Subtable header 925 _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0)); 926 927 // Subtable entry 928 _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0)); 929 } 930 931 // If deoptimization happens, the interpreter should reexecute these bytecodes. 932 // This function mainly helps the compilers to set up the reexecute bit. 933 static bool bytecode_should_reexecute(Bytecodes::Code code) { 934 switch (code) { 935 case Bytecodes::_invokedynamic: 936 case Bytecodes::_invokevirtual: 937 case Bytecodes::_invokeinterface: 938 case Bytecodes::_invokespecial: 939 case Bytecodes::_invokestatic: 940 return false; 941 default: 942 return true; 943 } 944 return true; 945 } 946 947 GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(Handle debug_info, TRAPS) { 948 objArrayHandle virtualObjects(THREAD, DebugInfo::virtualObjectMapping(debug_info)); 949 if (virtualObjects.is_null()) { 950 return NULL; 951 } 952 GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(virtualObjects->length(), virtualObjects->length(), NULL); 953 // Create the unique ObjectValues 954 for (int i = 0; i < virtualObjects->length(); i++) { 955 HandleMark hm(THREAD); 956 Handle value(THREAD, virtualObjects->obj_at(i)); 957 int id = VirtualObject::id(value); 958 Handle type(THREAD, VirtualObject::type(value)); 959 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type); 960 ObjectValue* sv = new ObjectValue(id, new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror))); 961 if (id < 0 || id >= objects->length()) { 962 JVMCI_ERROR_NULL("virtual object id %d out of bounds", id); 963 } 964 if (objects->at(id) != NULL) { 965 JVMCI_ERROR_NULL("duplicate virtual object id %d", id); 966 } 967 objects->at_put(id, sv); 968 } 969 // All the values which could be referenced by the VirtualObjects 970 // exist, so now describe all the VirtualObjects themselves. 971 for (int i = 0; i < virtualObjects->length(); i++) { 972 HandleMark hm(THREAD); 973 Handle value(THREAD, virtualObjects->obj_at(i)); 974 int id = VirtualObject::id(value); 975 record_object_value(objects->at(id)->as_ObjectValue(), value, objects, CHECK_NULL); 976 } 977 _debug_recorder->dump_object_pool(objects); 978 return objects; 979 } 980 981 void CodeInstaller::record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, bool return_oop, TRAPS) { 982 Handle position(THREAD, DebugInfo::bytecodePosition(debug_info)); 983 if (position.is_null()) { 984 // Stubs do not record scope info, just oop maps 985 return; 986 } 987 988 GrowableArray<ScopeValue*>* objectMapping; 989 if (scope_mode == CodeInstaller::FullFrame) { 990 objectMapping = record_virtual_objects(debug_info, CHECK); 991 } else { 992 objectMapping = NULL; 993 } 994 record_scope(pc_offset, position, scope_mode, objectMapping, return_oop, CHECK); 995 } 996 997 void CodeInstaller::record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, bool return_oop, TRAPS) { 998 Handle frame; 999 if (scope_mode == CodeInstaller::FullFrame) { 1000 if (!position->is_a(BytecodeFrame::klass())) { 1001 JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset); 1002 } 1003 frame = position; 1004 } 1005 Handle caller_frame (THREAD, BytecodePosition::caller(position)); 1006 if (caller_frame.not_null()) { 1007 record_scope(pc_offset, caller_frame, scope_mode, objects, return_oop, CHECK); 1008 } 1009 1010 Handle hotspot_method (THREAD, BytecodePosition::method(position)); 1011 Method* method = getMethodFromHotSpotMethod(hotspot_method()); 1012 jint bci = BytecodePosition::bci(position); 1013 if (bci == BytecodeFrame::BEFORE_BCI()) { 1014 bci = SynchronizationEntryBCI; 1015 } 1016 1017 TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string()); 1018 1019 bool reexecute = false; 1020 if (frame.not_null()) { 1021 if (bci == SynchronizationEntryBCI){ 1022 reexecute = false; 1023 } else { 1024 Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci)); 1025 reexecute = bytecode_should_reexecute(code); 1026 if (frame.not_null()) { 1027 reexecute = (BytecodeFrame::duringCall(frame) == JNI_FALSE); 1028 } 1029 } 1030 } 1031 1032 DebugToken* locals_token = NULL; 1033 DebugToken* expressions_token = NULL; 1034 DebugToken* monitors_token = NULL; 1035 bool throw_exception = false; 1036 1037 if (frame.not_null()) { 1038 jint local_count = BytecodeFrame::numLocals(frame); 1039 jint expression_count = BytecodeFrame::numStack(frame); 1040 jint monitor_count = BytecodeFrame::numLocks(frame); 1041 objArrayHandle values(THREAD, BytecodeFrame::values(frame)); 1042 objArrayHandle slotKinds(THREAD, BytecodeFrame::slotKinds(frame)); 1043 1044 if (values.is_null() || slotKinds.is_null()) { 1045 THROW(vmSymbols::java_lang_NullPointerException()); 1046 } 1047 if (local_count + expression_count + monitor_count != values->length()) { 1048 JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", values->length(), local_count, expression_count, monitor_count); 1049 } 1050 if (local_count + expression_count != slotKinds->length()) { 1051 JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", slotKinds->length(), local_count, expression_count); 1052 } 1053 1054 GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL; 1055 GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL; 1056 GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL; 1057 1058 TRACE_jvmci_2("Scope at bci %d with %d values", bci, values->length()); 1059 TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count); 1060 1061 for (jint i = 0; i < values->length(); i++) { 1062 HandleMark hm(THREAD); 1063 ScopeValue* second = NULL; 1064 Handle value(THREAD, values->obj_at(i)); 1065 if (i < local_count) { 1066 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK); 1067 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK); 1068 if (second != NULL) { 1069 locals->append(second); 1070 } 1071 locals->append(first); 1072 } else if (i < local_count + expression_count) { 1073 BasicType type = JVMCIRuntime::kindToBasicType(Handle(THREAD, slotKinds->obj_at(i)), CHECK); 1074 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK); 1075 if (second != NULL) { 1076 expressions->append(second); 1077 } 1078 expressions->append(first); 1079 } else { 1080 MonitorValue *monitor = get_monitor_value(value, objects, CHECK); 1081 monitors->append(monitor); 1082 } 1083 if (second != NULL) { 1084 i++; 1085 if (i >= values->length() || values->obj_at(i) != Value::ILLEGAL()) { 1086 JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL"); 1087 } 1088 } 1089 } 1090 1091 locals_token = _debug_recorder->create_scope_values(locals); 1092 expressions_token = _debug_recorder->create_scope_values(expressions); 1093 monitors_token = _debug_recorder->create_monitor_values(monitors); 1094 1095 throw_exception = BytecodeFrame::rethrowException(frame) == JNI_TRUE; 1096 } 1097 1098 _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, return_oop, 1099 locals_token, expressions_token, monitors_token); 1100 } 1101 1102 void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1103 Handle debug_info (THREAD, site_Infopoint::debugInfo(site)); 1104 if (debug_info.is_null()) { 1105 JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset); 1106 } 1107 1108 // address instruction = _instructions->start() + pc_offset; 1109 // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start(); 1110 OopMap *map = create_oop_map(debug_info, CHECK); 1111 _debug_recorder->add_safepoint(pc_offset, map); 1112 record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, CHECK); 1113 _debug_recorder->end_safepoint(pc_offset); 1114 } 1115 1116 void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1117 Handle debug_info (THREAD, site_Infopoint::debugInfo(site)); 1118 if (debug_info.is_null()) { 1119 JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset); 1120 } 1121 1122 // We'd like to check that pc_offset is greater than the 1123 // last pc recorded with _debug_recorder (raising an exception if not) 1124 // but DebugInformationRecorder doesn't have sufficient public API. 1125 1126 _debug_recorder->add_non_safepoint(pc_offset); 1127 record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, CHECK); 1128 _debug_recorder->end_non_safepoint(pc_offset); 1129 } 1130 1131 void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1132 Handle target(THREAD, site_Call::target(site)); 1133 InstanceKlass* target_klass = InstanceKlass::cast(target->klass()); 1134 1135 Handle hotspot_method; // JavaMethod 1136 Handle foreign_call; 1137 1138 if (target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) { 1139 foreign_call = target; 1140 } else { 1141 hotspot_method = target; 1142 } 1143 1144 Handle debug_info (THREAD, site_Call::debugInfo(site)); 1145 1146 assert(hotspot_method.not_null() ^ foreign_call.not_null(), "Call site needs exactly one type"); 1147 1148 NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset); 1149 jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, CHECK); 1150 1151 if (debug_info.not_null()) { 1152 OopMap *map = create_oop_map(debug_info, CHECK); 1153 _debug_recorder->add_safepoint(next_pc_offset, map); 1154 1155 bool return_oop = hotspot_method.not_null() && getMethodFromHotSpotMethod(hotspot_method())->is_returning_oop(); 1156 1157 record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, return_oop, CHECK); 1158 } 1159 1160 if (foreign_call.not_null()) { 1161 jlong foreign_call_destination = HotSpotForeignCallTarget::address(foreign_call); 1162 if (_immutable_pic_compilation) { 1163 // Use fake short distance during PIC compilation. 1164 foreign_call_destination = (jlong)(_instructions->start() + pc_offset); 1165 } 1166 CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, CHECK); 1167 } else { // method != NULL 1168 if (debug_info.is_null()) { 1169 JVMCI_ERROR("debug info expected at call at %i", pc_offset); 1170 } 1171 1172 TRACE_jvmci_3("method call"); 1173 CodeInstaller::pd_relocate_JavaMethod(hotspot_method, pc_offset, CHECK); 1174 if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) { 1175 // Need a static call stub for transitions from compiled to interpreted. 1176 CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset); 1177 } 1178 #if INCLUDE_AOT 1179 // Trampoline to far aot code. 1180 CompiledStaticCall::emit_to_aot_stub(buffer, _instructions->start() + pc_offset); 1181 #endif 1182 } 1183 1184 _next_call_type = INVOKE_INVALID; 1185 1186 if (debug_info.not_null()) { 1187 _debug_recorder->end_safepoint(next_pc_offset); 1188 } 1189 } 1190 1191 void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1192 Handle reference(THREAD, site_DataPatch::reference(site)); 1193 if (reference.is_null()) { 1194 THROW(vmSymbols::java_lang_NullPointerException()); 1195 } else if (reference->is_a(site_ConstantReference::klass())) { 1196 Handle constant(THREAD, site_ConstantReference::constant(reference)); 1197 if (constant.is_null()) { 1198 THROW(vmSymbols::java_lang_NullPointerException()); 1199 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) { 1200 if (!_immutable_pic_compilation) { 1201 // Do not patch during PIC compilation. 1202 pd_patch_OopConstant(pc_offset, constant, CHECK); 1203 } 1204 } else if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) { 1205 if (!_immutable_pic_compilation) { 1206 pd_patch_MetaspaceConstant(pc_offset, constant, CHECK); 1207 } 1208 } else if (constant->is_a(HotSpotSentinelConstant::klass())) { 1209 if (!_immutable_pic_compilation) { 1210 JVMCI_ERROR("sentinel constant not supported for normal compiles: %s", constant->klass()->signature_name()); 1211 } 1212 } else { 1213 JVMCI_ERROR("unknown constant type in data patch: %s", constant->klass()->signature_name()); 1214 } 1215 } else if (reference->is_a(site_DataSectionReference::klass())) { 1216 int data_offset = site_DataSectionReference::offset(reference); 1217 if (0 <= data_offset && data_offset < _constants_size) { 1218 pd_patch_DataSectionReference(pc_offset, data_offset, CHECK); 1219 } else { 1220 JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size); 1221 } 1222 } else { 1223 JVMCI_ERROR("unknown data patch type: %s", reference->klass()->signature_name()); 1224 } 1225 } 1226 1227 void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1228 Handle id_obj (THREAD, site_Mark::id(site)); 1229 1230 if (id_obj.not_null()) { 1231 if (!java_lang_boxing_object::is_instance(id_obj(), T_INT)) { 1232 JVMCI_ERROR("expected Integer id, got %s", id_obj->klass()->signature_name()); 1233 } 1234 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT)); 1235 1236 address pc = _instructions->start() + pc_offset; 1237 1238 switch (id) { 1239 case UNVERIFIED_ENTRY: 1240 _offsets.set_value(CodeOffsets::Entry, pc_offset); 1241 break; 1242 case VERIFIED_ENTRY: 1243 _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset); 1244 break; 1245 case OSR_ENTRY: 1246 _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset); 1247 break; 1248 case EXCEPTION_HANDLER_ENTRY: 1249 _offsets.set_value(CodeOffsets::Exceptions, pc_offset); 1250 break; 1251 case DEOPT_HANDLER_ENTRY: 1252 _offsets.set_value(CodeOffsets::Deopt, pc_offset); 1253 break; 1254 case INVOKEVIRTUAL: 1255 case INVOKEINTERFACE: 1256 case INLINE_INVOKE: 1257 case INVOKESTATIC: 1258 case INVOKESPECIAL: 1259 _next_call_type = (MarkId) id; 1260 _invoke_mark_pc = pc; 1261 break; 1262 case POLL_NEAR: 1263 case POLL_FAR: 1264 case POLL_RETURN_NEAR: 1265 case POLL_RETURN_FAR: 1266 pd_relocate_poll(pc, id, CHECK); 1267 break; 1268 case CARD_TABLE_SHIFT: 1269 case CARD_TABLE_ADDRESS: 1270 case HEAP_TOP_ADDRESS: 1271 case HEAP_END_ADDRESS: 1272 case NARROW_KLASS_BASE_ADDRESS: 1273 case NARROW_OOP_BASE_ADDRESS: 1274 case CRC_TABLE_ADDRESS: 1275 case LOG_OF_HEAP_REGION_GRAIN_BYTES: 1276 case INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED: 1277 break; 1278 default: 1279 JVMCI_ERROR("invalid mark id: %d", id); 1280 break; 1281 } 1282 } 1283 } 1284