1 /* 2 * Copyright (c) 2011, 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 #include "precompiled.hpp" 25 #include "code/compiledIC.hpp" 26 #include "compiler/compileBroker.hpp" 27 #include "compiler/disassembler.hpp" 28 #include "oops/oop.inline.hpp" 29 #include "oops/objArrayOop.inline.hpp" 30 #include "runtime/javaCalls.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 "asm/register.hpp" 38 #include "classfile/vmSymbols.hpp" 39 #include "code/vmreg.hpp" 40 41 #ifdef TARGET_ARCH_x86 42 # include "vmreg_x86.inline.hpp" 43 #endif 44 #ifdef TARGET_ARCH_sparc 45 # include "vmreg_sparc.inline.hpp" 46 #endif 47 #ifdef TARGET_ARCH_zero 48 # include "vmreg_zero.inline.hpp" 49 #endif 50 #ifdef TARGET_ARCH_arm 51 # include "vmreg_arm.inline.hpp" 52 #endif 53 #ifdef TARGET_ARCH_ppc 54 # include "vmreg_ppc.inline.hpp" 55 #endif 56 57 58 // frequently used constants 59 // Allocate them with new so they are never destroyed (otherwise, a 60 // forced exit could destroy these objects while they are still in 61 // use). 62 ConstantOopWriteValue* CodeInstaller::_oop_null_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantOopWriteValue(NULL); 63 ConstantIntValue* CodeInstaller::_int_m1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(-1); 64 ConstantIntValue* CodeInstaller::_int_0_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(0); 65 ConstantIntValue* CodeInstaller::_int_1_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(1); 66 ConstantIntValue* CodeInstaller::_int_2_scope_value = new (ResourceObj::C_HEAP, mtCompiler) ConstantIntValue(2); 67 LocationValue* CodeInstaller::_illegal_value = new (ResourceObj::C_HEAP, mtCompiler) LocationValue(Location()); 68 69 Method* getMethodFromHotSpotMethod(oop hotspot_method) { 70 assert(hotspot_method != NULL && hotspot_method->is_a(HotSpotResolvedJavaMethodImpl::klass()), "sanity"); 71 return CompilerToVM::asMethod(hotspot_method); 72 } 73 74 VMReg getVMRegFromLocation(Handle location, int total_frame_size, TRAPS) { 75 if (location.is_null()) { 76 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 77 } 78 79 Handle reg = code_Location::reg(location); 80 jint offset = code_Location::offset(location); 81 82 if (reg.not_null()) { 83 // register 84 jint number = code_Register::number(reg); 85 VMReg vmReg = CodeInstaller::get_hotspot_reg(number, CHECK_NULL); 86 if (offset % 4 == 0) { 87 return vmReg->next(offset / 4); 88 } else { 89 JVMCI_ERROR_NULL("unaligned subregister offset %d in oop map", offset); 90 } 91 } else { 92 // stack slot 93 if (offset % 4 == 0) { 94 return VMRegImpl::stack2reg(offset / 4); 95 } else { 96 JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset); 97 } 98 } 99 } 100 101 // creates a HotSpot oop map out of the byte arrays provided by DebugInfo 102 OopMap* CodeInstaller::create_oop_map(Handle debug_info, TRAPS) { 103 Handle reference_map = DebugInfo::referenceMap(debug_info); 104 if (reference_map.is_null()) { 105 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 106 } 107 if (!reference_map->is_a(HotSpotReferenceMap::klass())) { 108 JVMCI_ERROR_NULL("unknown reference map: %s", reference_map->klass()->signature_name()); 109 } 110 if (HotSpotReferenceMap::maxRegisterSize(reference_map) > 16) { 111 _has_wide_vector = true; 112 } 113 OopMap* map = new OopMap(_total_frame_size, _parameter_count); 114 objArrayHandle objects = HotSpotReferenceMap::objects(reference_map); 115 objArrayHandle derivedBase = HotSpotReferenceMap::derivedBase(reference_map); 116 typeArrayHandle sizeInBytes = HotSpotReferenceMap::sizeInBytes(reference_map); 117 if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) { 118 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 119 } 120 if (objects->length() != derivedBase->length() || objects->length() != sizeInBytes->length()) { 121 JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", objects->length(), derivedBase->length(), sizeInBytes->length()); 122 } 123 for (int i = 0; i < objects->length(); i++) { 124 Handle location = objects->obj_at(i); 125 Handle baseLocation = derivedBase->obj_at(i); 126 int bytes = sizeInBytes->int_at(i); 127 128 VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, CHECK_NULL); 129 if (baseLocation.not_null()) { 130 // derived oop 131 #ifdef _LP64 132 if (bytes == 8) { 133 #else 134 if (bytes == 4) { 135 #endif 136 VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, CHECK_NULL); 137 map->set_derived_oop(vmReg, baseReg); 138 } else { 139 JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes); 140 } 141 #ifdef _LP64 142 } else if (bytes == 8) { 143 // wide oop 144 map->set_oop(vmReg); 145 } else if (bytes == 4) { 146 // narrow oop 147 map->set_narrowoop(vmReg); 148 #else 149 } else if (bytes == 4) { 150 map->set_oop(vmReg); 151 #endif 152 } else { 153 JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes); 154 } 155 } 156 157 Handle callee_save_info = (oop) DebugInfo::calleeSaveInfo(debug_info); 158 if (callee_save_info.not_null()) { 159 objArrayHandle registers = RegisterSaveLayout::registers(callee_save_info); 160 typeArrayHandle slots = RegisterSaveLayout::slots(callee_save_info); 161 for (jint i = 0; i < slots->length(); i++) { 162 Handle jvmci_reg = registers->obj_at(i); 163 jint jvmci_reg_number = code_Register::number(jvmci_reg); 164 VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, CHECK_NULL); 165 // HotSpot stack slots are 4 bytes 166 jint jvmci_slot = slots->int_at(i); 167 jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word; 168 VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot); 169 map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg); 170 #ifdef _LP64 171 // (copied from generate_oop_map() in c1_Runtime1_x86.cpp) 172 VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1); 173 map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next()); 174 #endif 175 } 176 } 177 return map; 178 } 179 180 Metadata* CodeInstaller::record_metadata_reference(Handle constant, TRAPS) { 181 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant); 182 if (obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) { 183 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj)); 184 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass)); 185 int index = _oop_recorder->find_index(klass); 186 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string()); 187 return klass; 188 } else if (obj->is_a(HotSpotResolvedJavaMethodImpl::klass())) { 189 Method* method = (Method*) (address) HotSpotResolvedJavaMethodImpl::metaspaceMethod(obj); 190 assert(!HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method)); 191 int index = _oop_recorder->find_index(method); 192 TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string()); 193 return method; 194 } else { 195 JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", obj->klass()->signature_name()); 196 } 197 } 198 199 #ifdef _LP64 200 narrowKlass CodeInstaller::record_narrow_metadata_reference(Handle constant, TRAPS) { 201 oop obj = HotSpotMetaspaceConstantImpl::metaspaceObject(constant); 202 assert(HotSpotMetaspaceConstantImpl::compressed(constant), "unexpected uncompressed pointer"); 203 204 if (!obj->is_a(HotSpotResolvedObjectTypeImpl::klass())) { 205 JVMCI_ERROR_0("unexpected compressed pointer of type %s", obj->klass()->signature_name()); 206 } 207 208 Klass* klass = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(obj)); 209 int index = _oop_recorder->find_index(klass); 210 TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string()); 211 return Klass::encode_klass(klass); 212 } 213 #endif 214 215 Location::Type CodeInstaller::get_oop_type(Handle value) { 216 Handle lirKind = Value::lirKind(value); 217 Handle platformKind = LIRKind::platformKind(lirKind); 218 assert(LIRKind::referenceMask(lirKind) == 1, "unexpected referenceMask"); 219 220 if (platformKind == word_kind()) { 221 return Location::oop; 222 } else { 223 return Location::narrowoop; 224 } 225 } 226 227 ScopeValue* CodeInstaller::get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS) { 228 second = NULL; 229 if (value.is_null()) { 230 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 231 } else if (value == Value::ILLEGAL()) { 232 if (type != T_ILLEGAL) { 233 JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type)); 234 } 235 return _illegal_value; 236 } else if (value->is_a(RegisterValue::klass())) { 237 Handle reg = RegisterValue::reg(value); 238 jint number = code_Register::number(reg); 239 VMReg hotspotRegister = get_hotspot_reg(number, CHECK_NULL); 240 if (is_general_purpose_reg(hotspotRegister)) { 241 Location::Type locationType; 242 if (type == T_OBJECT) { 243 locationType = get_oop_type(value); 244 } else if (type == T_LONG) { 245 locationType = Location::lng; 246 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) { 247 locationType = Location::int_in_long; 248 } else { 249 JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type)); 250 } 251 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister)); 252 if (type == T_LONG) { 253 second = value; 254 } 255 return value; 256 } else { 257 Location::Type locationType; 258 if (type == T_FLOAT) { 259 // this seems weird, but the same value is used in c1_LinearScan 260 locationType = Location::normal; 261 } else if (type == T_DOUBLE) { 262 locationType = Location::dbl; 263 } else { 264 JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type)); 265 } 266 ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister)); 267 if (type == T_DOUBLE) { 268 second = value; 269 } 270 return value; 271 } 272 } else if (value->is_a(StackSlot::klass())) { 273 jint offset = StackSlot::offset(value); 274 if (StackSlot::addFrameSize(value)) { 275 offset += _total_frame_size; 276 } 277 278 Location::Type locationType; 279 if (type == T_OBJECT) { 280 locationType = get_oop_type(value); 281 } else if (type == T_LONG) { 282 locationType = Location::lng; 283 } else if (type == T_DOUBLE) { 284 locationType = Location::dbl; 285 } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) { 286 locationType = Location::normal; 287 } else { 288 JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type)); 289 } 290 ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset)); 291 if (type == T_DOUBLE || type == T_LONG) { 292 second = value; 293 } 294 return value; 295 } else if (value->is_a(JavaConstant::klass())) { 296 if (value->is_a(PrimitiveConstant::klass())) { 297 if (value->is_a(RawConstant::klass())) { 298 jlong prim = PrimitiveConstant::primitive(value); 299 return new ConstantLongValue(prim); 300 } else { 301 BasicType constantType = JVMCIRuntime::kindToBasicType(PrimitiveConstant::kind(value), CHECK_NULL); 302 if (type != constantType) { 303 JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType)); 304 } 305 if (type == T_INT || type == T_FLOAT) { 306 jint prim = (jint)PrimitiveConstant::primitive(value); 307 switch (prim) { 308 case -1: return _int_m1_scope_value; 309 case 0: return _int_0_scope_value; 310 case 1: return _int_1_scope_value; 311 case 2: return _int_2_scope_value; 312 default: return new ConstantIntValue(prim); 313 } 314 } else if (type == T_LONG || type == T_DOUBLE) { 315 jlong prim = PrimitiveConstant::primitive(value); 316 second = _int_1_scope_value; 317 return new ConstantLongValue(prim); 318 } else { 319 JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type)); 320 } 321 } 322 } else if (value->is_a(NullConstant::klass()) || value->is_a(HotSpotCompressedNullConstant::klass())) { 323 if (type == T_OBJECT) { 324 return _oop_null_scope_value; 325 } else { 326 JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type)); 327 } 328 } else if (value->is_a(HotSpotObjectConstantImpl::klass())) { 329 if (type == T_OBJECT) { 330 oop obj = HotSpotObjectConstantImpl::object(value); 331 if (obj == NULL) { 332 JVMCI_ERROR_NULL("null value must be in NullConstant"); 333 } 334 return new ConstantOopWriteValue(JNIHandles::make_local(obj)); 335 } else { 336 JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type)); 337 } 338 } 339 } else if (value->is_a(VirtualObject::klass())) { 340 if (type == T_OBJECT) { 341 int id = VirtualObject::id(value); 342 if (0 <= id && id < objects->length()) { 343 ScopeValue* object = objects->at(id); 344 if (object != NULL) { 345 return object; 346 } 347 } 348 JVMCI_ERROR_NULL("unknown virtual object id %d", id); 349 } else { 350 JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type)); 351 } 352 } 353 354 JVMCI_ERROR_NULL("unexpected value in scope: %s", value->klass()->signature_name()) 355 } 356 357 void CodeInstaller::record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) { 358 Handle type = VirtualObject::type(value); 359 int id = VirtualObject::id(value); 360 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type); 361 Klass* klass = java_lang_Class::as_Klass(javaMirror); 362 bool isLongArray = klass == Universe::longArrayKlassObj(); 363 364 objArrayHandle values = VirtualObject::values(value); 365 objArrayHandle slotKinds = VirtualObject::slotKinds(value); 366 for (jint i = 0; i < values->length(); i++) { 367 ScopeValue* cur_second = NULL; 368 Handle object = values->obj_at(i); 369 BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK); 370 ScopeValue* value = get_scope_value(object, type, objects, cur_second, CHECK); 371 372 if (isLongArray && cur_second == NULL) { 373 // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations. 374 // add an int 0 constant 375 cur_second = _int_0_scope_value; 376 } 377 378 if (cur_second != NULL) { 379 sv->field_values()->append(cur_second); 380 } 381 assert(value != NULL, "missing value"); 382 sv->field_values()->append(value); 383 } 384 } 385 386 MonitorValue* CodeInstaller::get_monitor_value(Handle value, GrowableArray<ScopeValue*>* objects, TRAPS) { 387 if (value.is_null()) { 388 THROW_NULL(vmSymbols::java_lang_NullPointerException()); 389 } 390 if (!value->is_a(StackLockValue::klass())) { 391 JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", value->klass()->signature_name()); 392 } 393 394 ScopeValue* second = NULL; 395 ScopeValue* owner_value = get_scope_value(StackLockValue::owner(value), T_OBJECT, objects, second, CHECK_NULL); 396 assert(second == NULL, "monitor cannot occupy two stack slots"); 397 398 ScopeValue* lock_data_value = get_scope_value(StackLockValue::slot(value), T_LONG, objects, second, CHECK_NULL); 399 assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots"); 400 assert(lock_data_value->is_location(), "invalid monitor location"); 401 Location lock_data_loc = ((LocationValue*)lock_data_value)->location(); 402 403 bool eliminated = false; 404 if (StackLockValue::eliminated(value)) { 405 eliminated = true; 406 } 407 408 return new MonitorValue(owner_value, lock_data_loc, eliminated); 409 } 410 411 void CodeInstaller::initialize_dependencies(oop compiled_code, OopRecorder* recorder, TRAPS) { 412 JavaThread* thread = JavaThread::current(); 413 CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL; 414 _oop_recorder = recorder; 415 _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL); 416 objArrayHandle assumptions = HotSpotCompiledCode::assumptions(compiled_code); 417 if (!assumptions.is_null()) { 418 int length = assumptions->length(); 419 for (int i = 0; i < length; ++i) { 420 Handle assumption = assumptions->obj_at(i); 421 if (!assumption.is_null()) { 422 if (assumption->klass() == Assumptions_NoFinalizableSubclass::klass()) { 423 assumption_NoFinalizableSubclass(assumption); 424 } else if (assumption->klass() == Assumptions_ConcreteSubtype::klass()) { 425 assumption_ConcreteSubtype(assumption); 426 } else if (assumption->klass() == Assumptions_LeafType::klass()) { 427 assumption_LeafType(assumption); 428 } else if (assumption->klass() == Assumptions_ConcreteMethod::klass()) { 429 assumption_ConcreteMethod(assumption); 430 } else if (assumption->klass() == Assumptions_CallSiteTargetValue::klass()) { 431 assumption_CallSiteTargetValue(assumption); 432 } else { 433 JVMCI_ERROR("unexpected Assumption subclass %s", assumption->klass()->signature_name()); 434 } 435 } 436 } 437 } 438 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { 439 objArrayHandle methods = HotSpotCompiledCode::methods(compiled_code); 440 if (!methods.is_null()) { 441 int length = methods->length(); 442 for (int i = 0; i < length; ++i) { 443 Handle method_handle = methods->obj_at(i); 444 methodHandle method = getMethodFromHotSpotMethod(method_handle()); 445 _dependencies->assert_evol_method(method()); 446 } 447 } 448 } 449 } 450 451 RelocBuffer::~RelocBuffer() { 452 if (_buffer != NULL) { 453 FREE_C_HEAP_ARRAY(char, _buffer); 454 } 455 } 456 457 address RelocBuffer::begin() const { 458 if (_buffer != NULL) { 459 return (address) _buffer; 460 } 461 return (address) _static_buffer; 462 } 463 464 void RelocBuffer::set_size(size_t bytes) { 465 assert(bytes <= _size, "can't grow in size!"); 466 _size = bytes; 467 } 468 469 void RelocBuffer::ensure_size(size_t bytes) { 470 assert(_buffer == NULL, "can only be used once"); 471 assert(_size == 0, "can only be used once"); 472 if (bytes >= RelocBuffer::stack_size) { 473 _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtInternal); 474 } 475 _size = bytes; 476 } 477 478 JVMCIEnv::CodeInstallResult CodeInstaller::gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS) { 479 CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata"); 480 jobject compiled_code_obj = JNIHandles::make_local(compiled_code()); 481 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), NULL, CHECK_OK); 482 483 // Get instructions and constants CodeSections early because we need it. 484 _instructions = buffer.insts(); 485 _constants = buffer.consts(); 486 487 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK); 488 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, CHECK_OK); 489 if (result != JVMCIEnv::ok) { 490 return result; 491 } 492 493 _debug_recorder->pcs_size(); // ehm, create the sentinel record 494 495 assert(_debug_recorder->pcs_length() >= 2, "must be at least 2"); 496 497 metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length()); 498 metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size()); 499 metadata.set_exception_table(&_exception_handler_table); 500 501 RelocBuffer* reloc_buffer = metadata.get_reloc_buffer(); 502 503 reloc_buffer->ensure_size(buffer.total_relocation_size()); 504 size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true); 505 reloc_buffer->set_size(size); 506 return JVMCIEnv::ok; 507 } 508 509 // constructor used to create a method 510 JVMCIEnv::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS) { 511 CodeBuffer buffer("JVMCI Compiler CodeBuffer"); 512 jobject compiled_code_obj = JNIHandles::make_local(compiled_code()); 513 OopRecorder* recorder = new OopRecorder(&_arena, true); 514 initialize_dependencies(JNIHandles::resolve(compiled_code_obj), recorder, CHECK_OK); 515 516 // Get instructions and constants CodeSections early because we need it. 517 _instructions = buffer.insts(); 518 _constants = buffer.consts(); 519 520 initialize_fields(target(), JNIHandles::resolve(compiled_code_obj), CHECK_OK); 521 JVMCIEnv::CodeInstallResult result = initialize_buffer(buffer, CHECK_OK); 522 if (result != JVMCIEnv::ok) { 523 return result; 524 } 525 526 int stack_slots = _total_frame_size / HeapWordSize; // conversion to words 527 528 if (!compiled_code->is_a(HotSpotCompiledNmethod::klass())) { 529 oop stubName = HotSpotCompiledCode::name(compiled_code_obj); 530 char* name = strdup(java_lang_String::as_utf8_string(stubName)); 531 cb = RuntimeStub::new_runtime_stub(name, 532 &buffer, 533 CodeOffsets::frame_never_safe, 534 stack_slots, 535 _debug_recorder->_oopmaps, 536 false); 537 result = JVMCIEnv::ok; 538 } else { 539 nmethod* nm = NULL; 540 methodHandle method = getMethodFromHotSpotMethod(HotSpotCompiledNmethod::method(compiled_code)); 541 jint entry_bci = HotSpotCompiledNmethod::entryBCI(compiled_code); 542 jint id = HotSpotCompiledNmethod::id(compiled_code); 543 bool has_unsafe_access = HotSpotCompiledNmethod::hasUnsafeAccess(compiled_code) == JNI_TRUE; 544 JVMCIEnv* env = (JVMCIEnv*) (address) HotSpotCompiledNmethod::jvmciEnv(compiled_code); 545 if (id == -1) { 546 // Make sure a valid compile_id is associated with every compile 547 id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci); 548 } 549 result = JVMCIEnv::register_method(method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer, 550 stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table, 551 compiler, _debug_recorder, _dependencies, env, id, 552 has_unsafe_access, _has_wide_vector, installed_code, compiled_code, speculation_log); 553 cb = nm; 554 } 555 556 if (cb != NULL) { 557 // Make sure the pre-calculated constants section size was correct. 558 guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size); 559 } 560 return result; 561 } 562 563 void CodeInstaller::initialize_fields(oop target, oop compiled_code, TRAPS) { 564 if (compiled_code->is_a(HotSpotCompiledNmethod::klass())) { 565 Handle hotspotJavaMethod = HotSpotCompiledNmethod::method(compiled_code); 566 methodHandle method = getMethodFromHotSpotMethod(hotspotJavaMethod()); 567 _parameter_count = method->size_of_parameters(); 568 TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string()); 569 } else { 570 // Must be a HotSpotCompiledRuntimeStub. 571 // Only used in OopMap constructor for non-product builds 572 _parameter_count = 0; 573 } 574 _sites_handle = JNIHandles::make_local(HotSpotCompiledCode::sites(compiled_code)); 575 576 _code_handle = JNIHandles::make_local(HotSpotCompiledCode::targetCode(compiled_code)); 577 _code_size = HotSpotCompiledCode::targetCodeSize(compiled_code); 578 _total_frame_size = HotSpotCompiledCode::totalFrameSize(compiled_code); 579 580 oop deoptRescueSlot = HotSpotCompiledCode::deoptRescueSlot(compiled_code); 581 if (deoptRescueSlot == NULL) { 582 _orig_pc_offset = -1; 583 } else { 584 _orig_pc_offset = StackSlot::offset(deoptRescueSlot); 585 if (StackSlot::addFrameSize(deoptRescueSlot)) { 586 _orig_pc_offset += _total_frame_size; 587 } 588 if (_orig_pc_offset < 0) { 589 JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset); 590 } 591 } 592 593 // Pre-calculate the constants section size. This is required for PC-relative addressing. 594 _data_section_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSection(compiled_code)); 595 if ((_constants->alignment() % HotSpotCompiledCode::dataSectionAlignment(compiled_code)) != 0) { 596 JVMCI_ERROR("invalid data section alignment: %d", HotSpotCompiledCode::dataSectionAlignment(compiled_code)); 597 } 598 _constants_size = data_section()->length(); 599 600 _data_section_patches_handle = JNIHandles::make_local(HotSpotCompiledCode::dataSectionPatches(compiled_code)); 601 602 #ifndef PRODUCT 603 _comments_handle = JNIHandles::make_local(HotSpotCompiledCode::comments(compiled_code)); 604 #endif 605 606 _next_call_type = INVOKE_INVALID; 607 608 _has_wide_vector = false; 609 610 oop arch = TargetDescription::arch(target); 611 _word_kind_handle = JNIHandles::make_local(Architecture::wordKind(arch)); 612 } 613 614 int CodeInstaller::estimate_stubs_size(TRAPS) { 615 // Estimate the number of static call stubs that might be emitted. 616 int static_call_stubs = 0; 617 objArrayOop sites = this->sites(); 618 for (int i = 0; i < sites->length(); i++) { 619 oop site = sites->obj_at(i); 620 if (site != NULL && site->is_a(site_Mark::klass())) { 621 oop id_obj = site_Mark::id(site); 622 if (id_obj != NULL) { 623 if (!java_lang_boxing_object::is_instance(id_obj, T_INT)) { 624 JVMCI_ERROR_0("expected Integer id, got %s", id_obj->klass()->signature_name()); 625 } 626 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT)); 627 if (id == INVOKESTATIC || id == INVOKESPECIAL) { 628 static_call_stubs++; 629 } 630 } 631 } 632 } 633 return static_call_stubs * CompiledStaticCall::to_interp_stub_size(); 634 } 635 636 // perform data and call relocation on the CodeBuffer 637 JVMCIEnv::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, TRAPS) { 638 HandleMark hm; 639 objArrayHandle sites = this->sites(); 640 int locs_buffer_size = sites->length() * (relocInfo::length_limit + sizeof(relocInfo)); 641 642 // Allocate enough space in the stub section for the static call 643 // stubs. Stubs have extra relocs but they are managed by the stub 644 // section itself so they don't need to be accounted for in the 645 // locs_buffer above. 646 int stubs_size = estimate_stubs_size(CHECK_OK); 647 int total_size = round_to(_code_size, buffer.insts()->alignment()) + round_to(_constants_size, buffer.consts()->alignment()) + round_to(stubs_size, buffer.stubs()->alignment()); 648 649 if (total_size > JVMCINMethodSizeLimit) { 650 return JVMCIEnv::code_too_large; 651 } 652 653 buffer.initialize(total_size, locs_buffer_size); 654 if (buffer.blob() == NULL) { 655 return JVMCIEnv::cache_full; 656 } 657 buffer.initialize_stubs_size(stubs_size); 658 buffer.initialize_consts_size(_constants_size); 659 660 _debug_recorder = new DebugInformationRecorder(_oop_recorder); 661 _debug_recorder->set_oopmaps(new OopMapSet()); 662 663 buffer.initialize_oop_recorder(_oop_recorder); 664 665 // copy the constant data into the newly created CodeBuffer 666 address end_data = _constants->start() + _constants_size; 667 memcpy(_constants->start(), data_section()->base(T_BYTE), _constants_size); 668 _constants->set_end(end_data); 669 670 // copy the code into the newly created CodeBuffer 671 address end_pc = _instructions->start() + _code_size; 672 guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code"); 673 memcpy(_instructions->start(), code()->base(T_BYTE), _code_size); 674 _instructions->set_end(end_pc); 675 676 for (int i = 0; i < data_section_patches()->length(); i++) { 677 Handle patch = data_section_patches()->obj_at(i); 678 if (patch.is_null()) { 679 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); 680 } 681 Handle reference = site_DataPatch::reference(patch); 682 if (reference.is_null()) { 683 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); 684 } 685 if (!reference->is_a(site_ConstantReference::klass())) { 686 JVMCI_ERROR_OK("invalid patch in data section: %s", reference->klass()->signature_name()); 687 } 688 Handle constant = site_ConstantReference::constant(reference); 689 if (constant.is_null()) { 690 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); 691 } 692 address dest = _constants->start() + site_Site::pcOffset(patch); 693 if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) { 694 if (HotSpotMetaspaceConstantImpl::compressed(constant)) { 695 #ifdef _LP64 696 *((narrowKlass*) dest) = record_narrow_metadata_reference(constant, CHECK_OK); 697 #else 698 JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode"); 699 #endif 700 } else { 701 *((Metadata**) dest) = record_metadata_reference(constant, CHECK_OK); 702 } 703 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) { 704 Handle obj = HotSpotObjectConstantImpl::object(constant); 705 jobject value = JNIHandles::make_local(obj()); 706 int oop_index = _oop_recorder->find_index(value); 707 708 if (HotSpotObjectConstantImpl::compressed(constant)) { 709 #ifdef _LP64 710 _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const); 711 #else 712 JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode"); 713 #endif 714 } else { 715 _constants->relocate(dest, oop_Relocation::spec(oop_index)); 716 } 717 } else { 718 JVMCI_ERROR_OK("invalid constant in data section: %s", constant->klass()->signature_name()); 719 } 720 } 721 jint last_pc_offset = -1; 722 for (int i = 0; i < sites->length(); i++) { 723 Handle site = sites->obj_at(i); 724 if (site.is_null()) { 725 THROW_(vmSymbols::java_lang_NullPointerException(), JVMCIEnv::ok); 726 } 727 728 jint pc_offset = site_Site::pcOffset(site); 729 730 if (site->is_a(site_Call::klass())) { 731 TRACE_jvmci_4("call at %i", pc_offset); 732 site_Call(buffer, pc_offset, site, CHECK_OK); 733 } else if (site->is_a(site_Infopoint::klass())) { 734 // three reasons for infopoints denote actual safepoints 735 oop reason = site_Infopoint::reason(site); 736 if (site_InfopointReason::SAFEPOINT() == reason || site_InfopointReason::CALL() == reason || site_InfopointReason::IMPLICIT_EXCEPTION() == reason) { 737 TRACE_jvmci_4("safepoint at %i", pc_offset); 738 site_Safepoint(buffer, pc_offset, site, CHECK_OK); 739 if (_orig_pc_offset < 0) { 740 JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot"); 741 } 742 } else { 743 TRACE_jvmci_4("infopoint at %i", pc_offset); 744 site_Infopoint(buffer, pc_offset, site, CHECK_OK); 745 } 746 } else if (site->is_a(site_DataPatch::klass())) { 747 TRACE_jvmci_4("datapatch at %i", pc_offset); 748 site_DataPatch(buffer, pc_offset, site, CHECK_OK); 749 } else if (site->is_a(site_Mark::klass())) { 750 TRACE_jvmci_4("mark at %i", pc_offset); 751 site_Mark(buffer, pc_offset, site, CHECK_OK); 752 } else if (site->is_a(site_ExceptionHandler::klass())) { 753 TRACE_jvmci_4("exceptionhandler at %i", pc_offset); 754 site_ExceptionHandler(pc_offset, site); 755 } else { 756 JVMCI_ERROR_OK("unexpected site subclass: %s", site->klass()->signature_name()); 757 } 758 last_pc_offset = pc_offset; 759 760 if (CodeInstallSafepointChecks && SafepointSynchronize::do_call_back()) { 761 // this is a hacky way to force a safepoint check but nothing else was jumping out at me. 762 ThreadToNativeFromVM ttnfv(JavaThread::current()); 763 } 764 } 765 766 #ifndef PRODUCT 767 if (comments() != NULL) { 768 for (int i = 0; i < comments()->length(); i++) { 769 oop comment = comments()->obj_at(i); 770 assert(comment->is_a(HotSpotCompiledCode_Comment::klass()), "cce"); 771 jint offset = HotSpotCompiledCode_Comment::pcOffset(comment); 772 char* text = java_lang_String::as_utf8_string(HotSpotCompiledCode_Comment::text(comment)); 773 buffer.block_comment(offset, text); 774 } 775 } 776 #endif 777 return JVMCIEnv::ok; 778 } 779 780 void CodeInstaller::assumption_NoFinalizableSubclass(Handle assumption) { 781 Handle receiverType_handle = Assumptions_NoFinalizableSubclass::receiverType(assumption()); 782 Klass* receiverType = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(receiverType_handle)); 783 _dependencies->assert_has_no_finalizable_subclasses(receiverType); 784 } 785 786 void CodeInstaller::assumption_ConcreteSubtype(Handle assumption) { 787 Handle context_handle = Assumptions_ConcreteSubtype::context(assumption()); 788 Handle subtype_handle = Assumptions_ConcreteSubtype::subtype(assumption()); 789 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle)); 790 Klass* subtype = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(subtype_handle)); 791 792 assert(context->is_abstract(), ""); 793 _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype); 794 } 795 796 void CodeInstaller::assumption_LeafType(Handle assumption) { 797 Handle context_handle = Assumptions_LeafType::context(assumption()); 798 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle)); 799 800 _dependencies->assert_leaf_type(context); 801 } 802 803 void CodeInstaller::assumption_ConcreteMethod(Handle assumption) { 804 Handle impl_handle = Assumptions_ConcreteMethod::impl(assumption()); 805 Handle context_handle = Assumptions_ConcreteMethod::context(assumption()); 806 807 methodHandle impl = getMethodFromHotSpotMethod(impl_handle()); 808 Klass* context = java_lang_Class::as_Klass(HotSpotResolvedObjectTypeImpl::javaClass(context_handle)); 809 810 _dependencies->assert_unique_concrete_method(context, impl()); 811 } 812 813 void CodeInstaller::assumption_CallSiteTargetValue(Handle assumption) { 814 Handle callSite = Assumptions_CallSiteTargetValue::callSite(assumption()); 815 Handle methodHandle = Assumptions_CallSiteTargetValue::methodHandle(assumption()); 816 817 _dependencies->assert_call_site_target_value(callSite(), methodHandle()); 818 } 819 820 void CodeInstaller::site_ExceptionHandler(jint pc_offset, Handle exc) { 821 jint handler_offset = site_ExceptionHandler::handlerPos(exc); 822 823 // Subtable header 824 _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0)); 825 826 // Subtable entry 827 _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0)); 828 } 829 830 // If deoptimization happens, the interpreter should reexecute these bytecodes. 831 // This function mainly helps the compilers to set up the reexecute bit. 832 static bool bytecode_should_reexecute(Bytecodes::Code code) { 833 switch (code) { 834 case Bytecodes::_invokedynamic: 835 case Bytecodes::_invokevirtual: 836 case Bytecodes::_invokeinterface: 837 case Bytecodes::_invokespecial: 838 case Bytecodes::_invokestatic: 839 return false; 840 default: 841 return true; 842 } 843 return true; 844 } 845 846 GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(Handle debug_info, TRAPS) { 847 objArrayHandle virtualObjects = DebugInfo::virtualObjectMapping(debug_info); 848 if (virtualObjects.is_null()) { 849 return NULL; 850 } 851 GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(virtualObjects->length(), virtualObjects->length(), NULL); 852 // Create the unique ObjectValues 853 for (int i = 0; i < virtualObjects->length(); i++) { 854 Handle value = virtualObjects->obj_at(i); 855 int id = VirtualObject::id(value); 856 Handle type = VirtualObject::type(value); 857 oop javaMirror = HotSpotResolvedObjectTypeImpl::javaClass(type); 858 ObjectValue* sv = new ObjectValue(id, new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror))); 859 if (id < 0 || id >= objects->length()) { 860 JVMCI_ERROR_NULL("virtual object id %d out of bounds", id); 861 } 862 if (objects->at(id) != NULL) { 863 JVMCI_ERROR_NULL("duplicate virtual object id %d", id); 864 } 865 objects->at_put(id, sv); 866 } 867 // All the values which could be referenced by the VirtualObjects 868 // exist, so now describe all the VirtualObjects themselves. 869 for (int i = 0; i < virtualObjects->length(); i++) { 870 Handle value = virtualObjects->obj_at(i); 871 int id = VirtualObject::id(value); 872 record_object_value(objects->at(id)->as_ObjectValue(), value, objects, CHECK_NULL); 873 } 874 _debug_recorder->dump_object_pool(objects); 875 return objects; 876 } 877 878 void CodeInstaller::record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, TRAPS) { 879 Handle position = DebugInfo::bytecodePosition(debug_info); 880 if (position.is_null()) { 881 // Stubs do not record scope info, just oop maps 882 return; 883 } 884 885 GrowableArray<ScopeValue*>* objectMapping; 886 if (scope_mode == CodeInstaller::FullFrame) { 887 objectMapping = record_virtual_objects(debug_info, CHECK); 888 } else { 889 objectMapping = NULL; 890 } 891 record_scope(pc_offset, position, scope_mode, objectMapping, CHECK); 892 } 893 894 void CodeInstaller::record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, TRAPS) { 895 Handle frame; 896 if (scope_mode == CodeInstaller::FullFrame) { 897 if (!position->is_a(BytecodeFrame::klass())) { 898 JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset); 899 } 900 frame = position; 901 } 902 Handle caller_frame = BytecodePosition::caller(position); 903 if (caller_frame.not_null()) { 904 record_scope(pc_offset, caller_frame, scope_mode, objects, CHECK); 905 } 906 907 Handle hotspot_method = BytecodePosition::method(position); 908 Method* method = getMethodFromHotSpotMethod(hotspot_method()); 909 jint bci = BytecodePosition::bci(position); 910 if (bci == BytecodeFrame::BEFORE_BCI()) { 911 bci = SynchronizationEntryBCI; 912 } 913 914 TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string()); 915 916 bool reexecute = false; 917 if (frame.not_null()) { 918 if (bci == SynchronizationEntryBCI){ 919 reexecute = false; 920 } else { 921 Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci)); 922 reexecute = bytecode_should_reexecute(code); 923 if (frame.not_null()) { 924 reexecute = (BytecodeFrame::duringCall(frame) == JNI_FALSE); 925 } 926 } 927 } 928 929 DebugToken* locals_token = NULL; 930 DebugToken* expressions_token = NULL; 931 DebugToken* monitors_token = NULL; 932 bool throw_exception = false; 933 934 if (frame.not_null()) { 935 jint local_count = BytecodeFrame::numLocals(frame); 936 jint expression_count = BytecodeFrame::numStack(frame); 937 jint monitor_count = BytecodeFrame::numLocks(frame); 938 objArrayHandle values = BytecodeFrame::values(frame); 939 objArrayHandle slotKinds = BytecodeFrame::slotKinds(frame); 940 941 if (values.is_null() || slotKinds.is_null()) { 942 THROW(vmSymbols::java_lang_NullPointerException()); 943 } 944 if (local_count + expression_count + monitor_count != values->length()) { 945 JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", values->length(), local_count, expression_count, monitor_count); 946 } 947 if (local_count + expression_count != slotKinds->length()) { 948 JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", slotKinds->length(), local_count, expression_count); 949 } 950 951 GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL; 952 GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL; 953 GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL; 954 955 TRACE_jvmci_2("Scope at bci %d with %d values", bci, values->length()); 956 TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count); 957 958 for (jint i = 0; i < values->length(); i++) { 959 ScopeValue* second = NULL; 960 Handle value = values->obj_at(i); 961 if (i < local_count) { 962 BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK); 963 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK); 964 if (second != NULL) { 965 locals->append(second); 966 } 967 locals->append(first); 968 } else if (i < local_count + expression_count) { 969 BasicType type = JVMCIRuntime::kindToBasicType(slotKinds->obj_at(i), CHECK); 970 ScopeValue* first = get_scope_value(value, type, objects, second, CHECK); 971 if (second != NULL) { 972 expressions->append(second); 973 } 974 expressions->append(first); 975 } else { 976 MonitorValue *monitor = get_monitor_value(value, objects, CHECK); 977 monitors->append(monitor); 978 } 979 if (second != NULL) { 980 i++; 981 if (i >= values->length() || values->obj_at(i) != Value::ILLEGAL()) { 982 JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL"); 983 } 984 } 985 } 986 987 locals_token = _debug_recorder->create_scope_values(locals); 988 expressions_token = _debug_recorder->create_scope_values(expressions); 989 monitors_token = _debug_recorder->create_monitor_values(monitors); 990 991 throw_exception = BytecodeFrame::rethrowException(frame) == JNI_TRUE; 992 } 993 994 _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, false, 995 locals_token, expressions_token, monitors_token); 996 } 997 998 void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 999 Handle debug_info = site_Infopoint::debugInfo(site); 1000 if (debug_info.is_null()) { 1001 JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset); 1002 } 1003 1004 // address instruction = _instructions->start() + pc_offset; 1005 // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start(); 1006 OopMap *map = create_oop_map(debug_info, CHECK); 1007 _debug_recorder->add_safepoint(pc_offset, map); 1008 record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, CHECK); 1009 _debug_recorder->end_safepoint(pc_offset); 1010 } 1011 1012 void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1013 Handle debug_info = site_Infopoint::debugInfo(site); 1014 if (debug_info.is_null()) { 1015 JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset); 1016 } 1017 1018 // We'd like to check that pc_offset is greater than the 1019 // last pc recorded with _debug_recorder (raising an exception if not) 1020 // but DebugInformationRecorder doesn't have sufficient public API. 1021 1022 _debug_recorder->add_non_safepoint(pc_offset); 1023 record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, CHECK); 1024 _debug_recorder->end_non_safepoint(pc_offset); 1025 } 1026 1027 void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1028 Handle target = site_Call::target(site); 1029 InstanceKlass* target_klass = InstanceKlass::cast(target->klass()); 1030 1031 Handle hotspot_method; // JavaMethod 1032 Handle foreign_call; 1033 1034 if (target_klass->is_subclass_of(SystemDictionary::HotSpotForeignCallTarget_klass())) { 1035 foreign_call = target; 1036 } else { 1037 hotspot_method = target; 1038 } 1039 1040 Handle debug_info = site_Call::debugInfo(site); 1041 1042 assert(hotspot_method.not_null() ^ foreign_call.not_null(), "Call site needs exactly one type"); 1043 1044 NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset); 1045 jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, CHECK); 1046 1047 if (debug_info.not_null()) { 1048 OopMap *map = create_oop_map(debug_info, CHECK); 1049 _debug_recorder->add_safepoint(next_pc_offset, map); 1050 record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, CHECK); 1051 } 1052 1053 if (foreign_call.not_null()) { 1054 jlong foreign_call_destination = HotSpotForeignCallTarget::address(foreign_call); 1055 CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, CHECK); 1056 } else { // method != NULL 1057 if (debug_info.is_null()) { 1058 JVMCI_ERROR("debug info expected at call at %i", pc_offset); 1059 } 1060 1061 TRACE_jvmci_3("method call"); 1062 CodeInstaller::pd_relocate_JavaMethod(hotspot_method, pc_offset, CHECK); 1063 if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) { 1064 // Need a static call stub for transitions from compiled to interpreted. 1065 CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset); 1066 } 1067 } 1068 1069 _next_call_type = INVOKE_INVALID; 1070 1071 if (debug_info.not_null()) { 1072 _debug_recorder->end_safepoint(next_pc_offset); 1073 } 1074 } 1075 1076 void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1077 Handle reference = site_DataPatch::reference(site); 1078 if (reference.is_null()) { 1079 THROW(vmSymbols::java_lang_NullPointerException()); 1080 } else if (reference->is_a(site_ConstantReference::klass())) { 1081 Handle constant = site_ConstantReference::constant(reference); 1082 if (constant.is_null()) { 1083 THROW(vmSymbols::java_lang_NullPointerException()); 1084 } else if (constant->is_a(HotSpotObjectConstantImpl::klass())) { 1085 pd_patch_OopConstant(pc_offset, constant, CHECK); 1086 } else if (constant->is_a(HotSpotMetaspaceConstantImpl::klass())) { 1087 pd_patch_MetaspaceConstant(pc_offset, constant, CHECK); 1088 } else { 1089 JVMCI_ERROR("unknown constant type in data patch: %s", constant->klass()->signature_name()); 1090 } 1091 } else if (reference->is_a(site_DataSectionReference::klass())) { 1092 int data_offset = site_DataSectionReference::offset(reference); 1093 if (0 <= data_offset && data_offset < _constants_size) { 1094 pd_patch_DataSectionReference(pc_offset, data_offset); 1095 } else { 1096 JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size); 1097 } 1098 } else { 1099 JVMCI_ERROR("unknown data patch type: %s", reference->klass()->signature_name()); 1100 } 1101 } 1102 1103 void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS) { 1104 Handle id_obj = site_Mark::id(site); 1105 1106 if (id_obj.not_null()) { 1107 if (!java_lang_boxing_object::is_instance(id_obj(), T_INT)) { 1108 JVMCI_ERROR("expected Integer id, got %s", id_obj->klass()->signature_name()); 1109 } 1110 jint id = id_obj->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT)); 1111 1112 address pc = _instructions->start() + pc_offset; 1113 1114 switch (id) { 1115 case UNVERIFIED_ENTRY: 1116 _offsets.set_value(CodeOffsets::Entry, pc_offset); 1117 break; 1118 case VERIFIED_ENTRY: 1119 _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset); 1120 break; 1121 case OSR_ENTRY: 1122 _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset); 1123 break; 1124 case EXCEPTION_HANDLER_ENTRY: 1125 _offsets.set_value(CodeOffsets::Exceptions, pc_offset); 1126 break; 1127 case DEOPT_HANDLER_ENTRY: 1128 _offsets.set_value(CodeOffsets::Deopt, pc_offset); 1129 break; 1130 case INVOKEVIRTUAL: 1131 case INVOKEINTERFACE: 1132 case INLINE_INVOKE: 1133 case INVOKESTATIC: 1134 case INVOKESPECIAL: 1135 _next_call_type = (MarkId) id; 1136 _invoke_mark_pc = pc; 1137 break; 1138 case POLL_NEAR: 1139 case POLL_FAR: 1140 case POLL_RETURN_NEAR: 1141 case POLL_RETURN_FAR: 1142 pd_relocate_poll(pc, id, CHECK); 1143 break; 1144 case CARD_TABLE_SHIFT: 1145 case CARD_TABLE_ADDRESS: 1146 case HEAP_TOP_ADDRESS: 1147 case HEAP_END_ADDRESS: 1148 case NARROW_KLASS_BASE_ADDRESS: 1149 case CRC_TABLE_ADDRESS: 1150 break; 1151 default: 1152 JVMCI_ERROR("invalid mark id: %d", id); 1153 break; 1154 } 1155 } 1156 } 1157