1 /*
   2  * Copyright (c) 2011, 2019, 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 "jvmci/jvmciCodeInstaller.hpp"
  28 #include "jvmci/jvmciCompilerToVM.hpp"
  29 #include "jvmci/jvmciRuntime.hpp"
  30 #include "memory/universe.hpp"
  31 #include "oops/compressedOops.inline.hpp"
  32 #include "runtime/interfaceSupport.inline.hpp"
  33 #include "runtime/jniHandles.inline.hpp"
  34 #include "runtime/sharedRuntime.hpp"
  35 #include "utilities/align.hpp"
  36 
  37 // frequently used constants
  38 // Allocate them with new so they are never destroyed (otherwise, a
  39 // forced exit could destroy these objects while they are still in
  40 // use).
  41 ConstantOopWriteValue* CodeInstaller::_oop_null_scope_value = new (ResourceObj::C_HEAP, mtJVMCI) ConstantOopWriteValue(NULL);
  42 ConstantIntValue*      CodeInstaller::_int_m1_scope_value = new (ResourceObj::C_HEAP, mtJVMCI) ConstantIntValue(-1);
  43 ConstantIntValue*      CodeInstaller::_int_0_scope_value =  new (ResourceObj::C_HEAP, mtJVMCI) ConstantIntValue((jint)0);
  44 ConstantIntValue*      CodeInstaller::_int_1_scope_value =  new (ResourceObj::C_HEAP, mtJVMCI) ConstantIntValue(1);
  45 ConstantIntValue*      CodeInstaller::_int_2_scope_value =  new (ResourceObj::C_HEAP, mtJVMCI) ConstantIntValue(2);
  46 LocationValue*         CodeInstaller::_illegal_value = new (ResourceObj::C_HEAP, mtJVMCI) LocationValue(Location());
  47 
  48 VMReg CodeInstaller::getVMRegFromLocation(JVMCIObject location, int total_frame_size, JVMCI_TRAPS) {
  49   if (location.is_null()) {
  50     JVMCI_THROW_NULL(NullPointerException);
  51   }
  52 
  53   JVMCIObject reg = jvmci_env()->get_code_Location_reg(location);
  54   jint offset = jvmci_env()->get_code_Location_offset(location);
  55 
  56   if (reg.is_non_null()) {
  57     // register
  58     jint number = jvmci_env()->get_code_Register_number(reg);
  59     VMReg vmReg = CodeInstaller::get_hotspot_reg(number, JVMCI_CHECK_NULL);
  60     if (offset % 4 == 0) {
  61       return vmReg->next(offset / 4);
  62     } else {
  63       JVMCI_ERROR_NULL("unaligned subregister offset %d in oop map", offset);
  64     }
  65   } else {
  66     // stack slot
  67     if (offset % 4 == 0) {
  68       VMReg vmReg = VMRegImpl::stack2reg(offset / 4);
  69       if (!OopMapValue::legal_vm_reg_name(vmReg)) {
  70         // This restriction only applies to VMRegs that are used in OopMap but
  71         // since that's the only use of VMRegs it's simplest to put this test
  72         // here.  This test should also be equivalent legal_vm_reg_name but JVMCI
  73         // clients can use max_oop_map_stack_stack_offset to detect this problem
  74         // directly.  The asserts just ensure that the tests are in agreement.
  75         assert(offset > CompilerToVM::Data::max_oop_map_stack_offset(), "illegal VMReg");
  76         JVMCI_ERROR_NULL("stack offset %d is too large to be encoded in OopMap (max %d)",
  77                          offset, CompilerToVM::Data::max_oop_map_stack_offset());
  78       }
  79       assert(OopMapValue::legal_vm_reg_name(vmReg), "illegal VMReg");
  80       return vmReg;
  81     } else {
  82       JVMCI_ERROR_NULL("unaligned stack offset %d in oop map", offset);
  83     }
  84   }
  85 }
  86 
  87 // creates a HotSpot oop map out of the byte arrays provided by DebugInfo
  88 OopMap* CodeInstaller::create_oop_map(JVMCIObject debug_info, JVMCI_TRAPS) {
  89   JVMCIObject reference_map = jvmci_env()->get_DebugInfo_referenceMap(debug_info);
  90   if (reference_map.is_null()) {
  91     JVMCI_THROW_NULL(NullPointerException);
  92   }
  93   if (!jvmci_env()->isa_HotSpotReferenceMap(reference_map)) {
  94     JVMCI_ERROR_NULL("unknown reference map: %s", jvmci_env()->klass_name(reference_map));
  95   }
  96   if (!_has_wide_vector && SharedRuntime::is_wide_vector(jvmci_env()->get_HotSpotReferenceMap_maxRegisterSize(reference_map))) {
  97     if (SharedRuntime::polling_page_vectors_safepoint_handler_blob() == NULL) {
  98       JVMCI_ERROR_NULL("JVMCI is producing code using vectors larger than the runtime supports");
  99     }
 100     _has_wide_vector = true;
 101   }
 102   OopMap* map = new OopMap(_total_frame_size, _parameter_count);
 103   JVMCIObjectArray objects = jvmci_env()->get_HotSpotReferenceMap_objects(reference_map);
 104   JVMCIObjectArray derivedBase = jvmci_env()->get_HotSpotReferenceMap_derivedBase(reference_map);
 105   JVMCIPrimitiveArray sizeInBytes = jvmci_env()->get_HotSpotReferenceMap_sizeInBytes(reference_map);
 106   if (objects.is_null() || derivedBase.is_null() || sizeInBytes.is_null()) {
 107     JVMCI_THROW_NULL(NullPointerException);
 108   }
 109   if (JVMCIENV->get_length(objects) != JVMCIENV->get_length(derivedBase) || JVMCIENV->get_length(objects) != JVMCIENV->get_length(sizeInBytes)) {
 110     JVMCI_ERROR_NULL("arrays in reference map have different sizes: %d %d %d", JVMCIENV->get_length(objects), JVMCIENV->get_length(derivedBase), JVMCIENV->get_length(sizeInBytes));
 111   }
 112   for (int i = 0; i < JVMCIENV->get_length(objects); i++) {
 113     JVMCIObject location = JVMCIENV->get_object_at(objects, i);
 114     JVMCIObject baseLocation = JVMCIENV->get_object_at(derivedBase, i);
 115     jint bytes = JVMCIENV->get_int_at(sizeInBytes, i);
 116 
 117     VMReg vmReg = getVMRegFromLocation(location, _total_frame_size, JVMCI_CHECK_NULL);
 118     if (baseLocation.is_non_null()) {
 119       // derived oop
 120 #ifdef _LP64
 121       if (bytes == 8) {
 122 #else
 123       if (bytes == 4) {
 124 #endif
 125         VMReg baseReg = getVMRegFromLocation(baseLocation, _total_frame_size, JVMCI_CHECK_NULL);
 126         map->set_derived_oop(vmReg, baseReg);
 127       } else {
 128         JVMCI_ERROR_NULL("invalid derived oop size in ReferenceMap: %d", bytes);
 129       }
 130 #ifdef _LP64
 131     } else if (bytes == 8) {
 132       // wide oop
 133       map->set_oop(vmReg);
 134     } else if (bytes == 4) {
 135       // narrow oop
 136       map->set_narrowoop(vmReg);
 137 #else
 138     } else if (bytes == 4) {
 139       map->set_oop(vmReg);
 140 #endif
 141     } else {
 142       JVMCI_ERROR_NULL("invalid oop size in ReferenceMap: %d", bytes);
 143     }
 144   }
 145 
 146   JVMCIObject callee_save_info = jvmci_env()->get_DebugInfo_calleeSaveInfo(debug_info);
 147   if (callee_save_info.is_non_null()) {
 148     JVMCIObjectArray registers = jvmci_env()->get_RegisterSaveLayout_registers(callee_save_info);
 149     JVMCIPrimitiveArray slots = jvmci_env()->get_RegisterSaveLayout_slots(callee_save_info);
 150     for (jint i = 0; i < JVMCIENV->get_length(slots); i++) {
 151       JVMCIObject jvmci_reg = JVMCIENV->get_object_at(registers, i);
 152       jint jvmci_reg_number = jvmci_env()->get_code_Register_number(jvmci_reg);
 153       VMReg hotspot_reg = CodeInstaller::get_hotspot_reg(jvmci_reg_number, JVMCI_CHECK_NULL);
 154       // HotSpot stack slots are 4 bytes
 155       jint jvmci_slot = JVMCIENV->get_int_at(slots, i);
 156       jint hotspot_slot = jvmci_slot * VMRegImpl::slots_per_word;
 157       VMReg hotspot_slot_as_reg = VMRegImpl::stack2reg(hotspot_slot);
 158       map->set_callee_saved(hotspot_slot_as_reg, hotspot_reg);
 159 #ifdef _LP64
 160       // (copied from generate_oop_map() in c1_Runtime1_x86.cpp)
 161       VMReg hotspot_slot_hi_as_reg = VMRegImpl::stack2reg(hotspot_slot + 1);
 162       map->set_callee_saved(hotspot_slot_hi_as_reg, hotspot_reg->next());
 163 #endif
 164     }
 165   }
 166   return map;
 167 }
 168 
 169 #if INCLUDE_AOT
 170 AOTOopRecorder::AOTOopRecorder(CodeInstaller* code_inst, Arena* arena, bool deduplicate) : OopRecorder(arena, deduplicate) {
 171   _code_inst = code_inst;
 172   _meta_refs = new GrowableArray<jobject>();
 173 }
 174 
 175 int AOTOopRecorder::nr_meta_refs() const {
 176   return _meta_refs->length();
 177 }
 178 
 179 jobject AOTOopRecorder::meta_element(int pos) const {
 180   return _meta_refs->at(pos);
 181 }
 182 
 183 int AOTOopRecorder::find_index(Metadata* h) {
 184   JavaThread* THREAD = JavaThread::current();
 185   JVMCIEnv* JVMCIENV = _code_inst->jvmci_env();
 186   int oldCount = metadata_count();
 187   int index =  this->OopRecorder::find_index(h);
 188   int newCount = metadata_count();
 189 
 190   if (oldCount == newCount) {
 191     // found a match
 192     return index;
 193   }
 194 
 195   vmassert(index + 1 == newCount, "must be last");
 196 
 197   JVMCIKlassHandle klass(THREAD);
 198   JVMCIObject result;
 199   guarantee(h != NULL,
 200             "If DebugInformationRecorder::describe_scope passes NULL oldCount == newCount must hold.");
 201   if (h->is_klass()) {
 202     klass = (Klass*) h;
 203     result = JVMCIENV->get_jvmci_type(klass, JVMCI_CATCH);
 204   } else if (h->is_method()) {
 205     Method* method = (Method*) h;
 206     methodHandle mh(method);
 207     result = JVMCIENV->get_jvmci_method(method, JVMCI_CATCH);
 208   }
 209   jobject ref = JVMCIENV->get_jobject(result);
 210   record_meta_ref(ref, index);
 211 
 212   return index;
 213 }
 214 
 215 int AOTOopRecorder::find_index(jobject h) {
 216   if (h == NULL) {
 217     return 0;
 218   }
 219   oop javaMirror = JNIHandles::resolve(h);
 220   Klass* klass = java_lang_Class::as_Klass(javaMirror);
 221   return find_index(klass);
 222 }
 223 
 224 void AOTOopRecorder::record_meta_ref(jobject o, int index) {
 225   assert(index > 0, "must be 1..n");
 226   index -= 1; // reduce by one to convert to array index
 227 
 228   assert(index == _meta_refs->length(), "must be last");
 229   _meta_refs->append(o);
 230 }
 231 #endif // INCLUDE_AOT
 232 
 233 void* CodeInstaller::record_metadata_reference(CodeSection* section, address dest, JVMCIObject constant, JVMCI_TRAPS) {
 234   /*
 235    * This method needs to return a raw (untyped) pointer, since the value of a pointer to the base
 236    * class is in general not equal to the pointer of the subclass. When patching metaspace pointers,
 237    * the compiler expects a direct pointer to the subclass (Klass* or Method*), not a pointer to the
 238    * base class (Metadata* or MetaspaceObj*).
 239    */
 240   JVMCIObject obj = jvmci_env()->get_HotSpotMetaspaceConstantImpl_metaspaceObject(constant);
 241   if (jvmci_env()->isa_HotSpotResolvedObjectTypeImpl(obj)) {
 242     Klass* klass = JVMCIENV->asKlass(obj);
 243     assert(!jvmci_env()->get_HotSpotMetaspaceConstantImpl_compressed(constant), "unexpected compressed klass pointer %s @ " INTPTR_FORMAT, klass->name()->as_C_string(), p2i(klass));
 244     int index = _oop_recorder->find_index(klass);
 245     section->relocate(dest, metadata_Relocation::spec(index));
 246     TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
 247     return klass;
 248   } else if (jvmci_env()->isa_HotSpotResolvedJavaMethodImpl(obj)) {
 249     Method* method = jvmci_env()->asMethod(obj);
 250     assert(!jvmci_env()->get_HotSpotMetaspaceConstantImpl_compressed(constant), "unexpected compressed method pointer %s @ " INTPTR_FORMAT, method->name()->as_C_string(), p2i(method));
 251     int index = _oop_recorder->find_index(method);
 252     section->relocate(dest, metadata_Relocation::spec(index));
 253     TRACE_jvmci_3("metadata[%d of %d] = %s", index, _oop_recorder->metadata_count(), method->name()->as_C_string());
 254     return method;
 255   } else {
 256     JVMCI_ERROR_NULL("unexpected metadata reference for constant of type %s", jvmci_env()->klass_name(obj));
 257   }
 258 }
 259 
 260 #ifdef _LP64
 261 narrowKlass CodeInstaller::record_narrow_metadata_reference(CodeSection* section, address dest, JVMCIObject constant, JVMCI_TRAPS) {
 262   JVMCIObject obj = jvmci_env()->get_HotSpotMetaspaceConstantImpl_metaspaceObject(constant);
 263   assert(jvmci_env()->get_HotSpotMetaspaceConstantImpl_compressed(constant), "unexpected uncompressed pointer");
 264 
 265   if (!jvmci_env()->isa_HotSpotResolvedObjectTypeImpl(obj)) {
 266     JVMCI_ERROR_0("unexpected compressed pointer of type %s", jvmci_env()->klass_name(obj));
 267   }
 268 
 269   Klass* klass = JVMCIENV->asKlass(obj);
 270   int index = _oop_recorder->find_index(klass);
 271   section->relocate(dest, metadata_Relocation::spec(index));
 272   TRACE_jvmci_3("narrowKlass[%d of %d] = %s", index, _oop_recorder->metadata_count(), klass->name()->as_C_string());
 273   return CompressedKlassPointers::encode(klass);
 274 }
 275 #endif
 276 
 277 Location::Type CodeInstaller::get_oop_type(JVMCIObject value) {
 278   JVMCIObject valueKind = jvmci_env()->get_Value_valueKind(value);
 279   JVMCIObject platformKind = jvmci_env()->get_ValueKind_platformKind(valueKind);
 280 
 281   if (jvmci_env()->equals(platformKind, word_kind())) {
 282     return Location::oop;
 283   } else {
 284     return Location::narrowoop;
 285   }
 286 }
 287 
 288 ScopeValue* CodeInstaller::get_scope_value(JVMCIObject value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, JVMCI_TRAPS) {
 289   second = NULL;
 290   if (value.is_null()) {
 291     JVMCI_THROW_NULL(NullPointerException);
 292   } else if (JVMCIENV->equals(value, jvmci_env()->get_Value_ILLEGAL())) {
 293     if (type != T_ILLEGAL) {
 294       JVMCI_ERROR_NULL("unexpected illegal value, expected %s", basictype_to_str(type));
 295     }
 296     return _illegal_value;
 297   } else if (jvmci_env()->isa_RegisterValue(value)) {
 298     JVMCIObject reg = jvmci_env()->get_RegisterValue_reg(value);
 299     jint number = jvmci_env()->get_code_Register_number(reg);
 300     VMReg hotspotRegister = get_hotspot_reg(number, JVMCI_CHECK_NULL);
 301     if (is_general_purpose_reg(hotspotRegister)) {
 302       Location::Type locationType;
 303       if (type == T_OBJECT) {
 304         locationType = get_oop_type(value);
 305       } else if (type == T_LONG) {
 306         locationType = Location::lng;
 307       } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
 308         locationType = Location::int_in_long;
 309       } else {
 310         JVMCI_ERROR_NULL("unexpected type %s in cpu register", basictype_to_str(type));
 311       }
 312       ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
 313       if (type == T_LONG) {
 314         second = value;
 315       }
 316       return value;
 317     } else {
 318       Location::Type locationType;
 319       if (type == T_FLOAT) {
 320         // this seems weird, but the same value is used in c1_LinearScan
 321         locationType = Location::normal;
 322       } else if (type == T_DOUBLE) {
 323         locationType = Location::dbl;
 324       } else {
 325         JVMCI_ERROR_NULL("unexpected type %s in floating point register", basictype_to_str(type));
 326       }
 327       ScopeValue* value = new LocationValue(Location::new_reg_loc(locationType, hotspotRegister));
 328       if (type == T_DOUBLE) {
 329         second = value;
 330       }
 331       return value;
 332     }
 333   } else if (jvmci_env()->isa_StackSlot(value)) {
 334     jint offset = jvmci_env()->get_StackSlot_offset(value);
 335     if (jvmci_env()->get_StackSlot_addFrameSize(value)) {
 336       offset += _total_frame_size;
 337     }
 338 
 339     Location::Type locationType;
 340     if (type == T_OBJECT) {
 341       locationType = get_oop_type(value);
 342     } else if (type == T_LONG) {
 343       locationType = Location::lng;
 344     } else if (type == T_DOUBLE) {
 345       locationType = Location::dbl;
 346     } else if (type == T_INT || type == T_FLOAT || type == T_SHORT || type == T_CHAR || type == T_BYTE || type == T_BOOLEAN) {
 347       locationType = Location::normal;
 348     } else {
 349       JVMCI_ERROR_NULL("unexpected type %s in stack slot", basictype_to_str(type));
 350     }
 351     ScopeValue* value = new LocationValue(Location::new_stk_loc(locationType, offset));
 352     if (type == T_DOUBLE || type == T_LONG) {
 353       second = value;
 354     }
 355     return value;
 356   } else if (jvmci_env()->isa_JavaConstant(value)) {
 357     if (jvmci_env()->isa_PrimitiveConstant(value)) {
 358       if (jvmci_env()->isa_RawConstant(value)) {
 359         jlong prim = jvmci_env()->get_PrimitiveConstant_primitive(value);
 360         return new ConstantLongValue(prim);
 361       } else {
 362         BasicType constantType = jvmci_env()->kindToBasicType(jvmci_env()->get_PrimitiveConstant_kind(value), JVMCI_CHECK_NULL);
 363         if (type != constantType) {
 364           JVMCI_ERROR_NULL("primitive constant type doesn't match, expected %s but got %s", basictype_to_str(type), basictype_to_str(constantType));
 365         }
 366         if (type == T_INT || type == T_FLOAT) {
 367           jint prim = (jint)jvmci_env()->get_PrimitiveConstant_primitive(value);
 368           switch (prim) {
 369             case -1: return _int_m1_scope_value;
 370             case  0: return _int_0_scope_value;
 371             case  1: return _int_1_scope_value;
 372             case  2: return _int_2_scope_value;
 373             default: return new ConstantIntValue(prim);
 374           }
 375         } else if (type == T_LONG || type == T_DOUBLE) {
 376           jlong prim = jvmci_env()->get_PrimitiveConstant_primitive(value);
 377           second = _int_1_scope_value;
 378           return new ConstantLongValue(prim);
 379         } else {
 380           JVMCI_ERROR_NULL("unexpected primitive constant type %s", basictype_to_str(type));
 381         }
 382       }
 383     } else if (jvmci_env()->isa_NullConstant(value) || jvmci_env()->isa_HotSpotCompressedNullConstant(value)) {
 384       if (type == T_OBJECT) {
 385         return _oop_null_scope_value;
 386       } else {
 387         JVMCI_ERROR_NULL("unexpected null constant, expected %s", basictype_to_str(type));
 388       }
 389     } else if (jvmci_env()->isa_HotSpotObjectConstantImpl(value)) {
 390       if (type == T_OBJECT) {
 391         Handle obj = jvmci_env()->asConstant(value, JVMCI_CHECK_NULL);
 392         if (obj == NULL) {
 393           JVMCI_ERROR_NULL("null value must be in NullConstant");
 394         }
 395         return new ConstantOopWriteValue(JNIHandles::make_local(obj()));
 396       } else {
 397         JVMCI_ERROR_NULL("unexpected object constant, expected %s", basictype_to_str(type));
 398       }
 399     }
 400   } else if (jvmci_env()->isa_VirtualObject(value)) {
 401     if (type == T_OBJECT) {
 402       int id = jvmci_env()->get_VirtualObject_id(value);
 403       if (0 <= id && id < objects->length()) {
 404         ScopeValue* object = objects->at(id);
 405         if (object != NULL) {
 406           return object;
 407         }
 408       }
 409       JVMCI_ERROR_NULL("unknown virtual object id %d", id);
 410     } else {
 411       JVMCI_ERROR_NULL("unexpected virtual object, expected %s", basictype_to_str(type));
 412     }
 413   }
 414 
 415   JVMCI_ERROR_NULL("unexpected value in scope: %s", jvmci_env()->klass_name(value))
 416 }
 417 
 418 void CodeInstaller::record_object_value(ObjectValue* sv, JVMCIObject value, GrowableArray<ScopeValue*>* objects, JVMCI_TRAPS) {
 419   JVMCIObject type = jvmci_env()->get_VirtualObject_type(value);
 420   int id = jvmci_env()->get_VirtualObject_id(value);
 421   Klass* klass = JVMCIENV->asKlass(type);
 422   bool isLongArray = klass == Universe::longArrayKlassObj();
 423 
 424   JVMCIObjectArray values = jvmci_env()->get_VirtualObject_values(value);
 425   JVMCIObjectArray slotKinds = jvmci_env()->get_VirtualObject_slotKinds(value);
 426   for (jint i = 0; i < JVMCIENV->get_length(values); i++) {
 427     ScopeValue* cur_second = NULL;
 428     JVMCIObject object = JVMCIENV->get_object_at(values, i);
 429     BasicType type = jvmci_env()->kindToBasicType(JVMCIENV->get_object_at(slotKinds, i), JVMCI_CHECK);
 430     ScopeValue* value = get_scope_value(object, type, objects, cur_second, JVMCI_CHECK);
 431 
 432     if (isLongArray && cur_second == NULL) {
 433       // we're trying to put ints into a long array... this isn't really valid, but it's used for some optimizations.
 434       // add an int 0 constant
 435       cur_second = _int_0_scope_value;
 436     }
 437 
 438     if (cur_second != NULL) {
 439       sv->field_values()->append(cur_second);
 440     }
 441     assert(value != NULL, "missing value");
 442     sv->field_values()->append(value);
 443   }
 444 }
 445 
 446 MonitorValue* CodeInstaller::get_monitor_value(JVMCIObject value, GrowableArray<ScopeValue*>* objects, JVMCI_TRAPS) {
 447   if (value.is_null()) {
 448     JVMCI_THROW_NULL(NullPointerException);
 449   }
 450   if (!jvmci_env()->isa_StackLockValue(value)) {
 451     JVMCI_ERROR_NULL("Monitors must be of type StackLockValue, got %s", jvmci_env()->klass_name(value));
 452   }
 453 
 454   ScopeValue* second = NULL;
 455   ScopeValue* owner_value = get_scope_value(jvmci_env()->get_StackLockValue_owner(value), T_OBJECT, objects, second, JVMCI_CHECK_NULL);
 456   assert(second == NULL, "monitor cannot occupy two stack slots");
 457 
 458   ScopeValue* lock_data_value = get_scope_value(jvmci_env()->get_StackLockValue_slot(value), T_LONG, objects, second, JVMCI_CHECK_NULL);
 459   assert(second == lock_data_value, "monitor is LONG value that occupies two stack slots");
 460   assert(lock_data_value->is_location(), "invalid monitor location");
 461   Location lock_data_loc = ((LocationValue*)lock_data_value)->location();
 462 
 463   bool eliminated = false;
 464   if (jvmci_env()->get_StackLockValue_eliminated(value)) {
 465     eliminated = true;
 466   }
 467 
 468   return new MonitorValue(owner_value, lock_data_loc, eliminated);
 469 }
 470 
 471 void CodeInstaller::initialize_dependencies(JVMCIObject compiled_code, OopRecorder* oop_recorder, JVMCI_TRAPS) {
 472   JavaThread* thread = JavaThread::current();
 473   CompilerThread* compilerThread = thread->is_Compiler_thread() ? thread->as_CompilerThread() : NULL;
 474   _oop_recorder = oop_recorder;
 475   _dependencies = new Dependencies(&_arena, _oop_recorder, compilerThread != NULL ? compilerThread->log() : NULL);
 476   JVMCIObjectArray assumptions = jvmci_env()->get_HotSpotCompiledCode_assumptions(compiled_code);
 477   if (assumptions.is_non_null()) {
 478     int length = JVMCIENV->get_length(assumptions);
 479     for (int i = 0; i < length; ++i) {
 480       JVMCIObject assumption = JVMCIENV->get_object_at(assumptions, i);
 481       if (assumption.is_non_null()) {
 482         if (jvmci_env()->isa_Assumptions_NoFinalizableSubclass(assumption)) {
 483           assumption_NoFinalizableSubclass(assumption);
 484         } else if (jvmci_env()->isa_Assumptions_ConcreteSubtype(assumption)) {
 485           assumption_ConcreteSubtype(assumption);
 486         } else if (jvmci_env()->isa_Assumptions_LeafType(assumption)) {
 487           assumption_LeafType(assumption);
 488         } else if (jvmci_env()->isa_Assumptions_ConcreteMethod(assumption)) {
 489           assumption_ConcreteMethod(assumption);
 490         } else if (jvmci_env()->isa_Assumptions_CallSiteTargetValue(assumption)) {
 491           assumption_CallSiteTargetValue(assumption, JVMCI_CHECK);
 492         } else {
 493           JVMCI_ERROR("unexpected Assumption subclass %s", jvmci_env()->klass_name(assumption));
 494         }
 495       }
 496     }
 497   }
 498   if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
 499     JVMCIObjectArray methods = jvmci_env()->get_HotSpotCompiledCode_methods(compiled_code);
 500     if (methods.is_non_null()) {
 501       int length = JVMCIENV->get_length(methods);
 502       for (int i = 0; i < length; ++i) {
 503         JVMCIObject method_handle = JVMCIENV->get_object_at(methods, i);
 504         methodHandle method = jvmci_env()->asMethod(method_handle);
 505         _dependencies->assert_evol_method(method());
 506       }
 507     }
 508   }
 509 }
 510 
 511 #if INCLUDE_AOT
 512 RelocBuffer::~RelocBuffer() {
 513   if (_buffer != NULL) {
 514     FREE_C_HEAP_ARRAY(char, _buffer);
 515   }
 516 }
 517 
 518 address RelocBuffer::begin() const {
 519   if (_buffer != NULL) {
 520     return (address) _buffer;
 521   }
 522   return (address) _static_buffer;
 523 }
 524 
 525 void RelocBuffer::set_size(size_t bytes) {
 526   assert(bytes <= _size, "can't grow in size!");
 527   _size = bytes;
 528 }
 529 
 530 void RelocBuffer::ensure_size(size_t bytes) {
 531   assert(_buffer == NULL, "can only be used once");
 532   assert(_size == 0, "can only be used once");
 533   if (bytes >= RelocBuffer::stack_size) {
 534     _buffer = NEW_C_HEAP_ARRAY(char, bytes, mtJVMCI);
 535   }
 536   _size = bytes;
 537 }
 538 
 539 JVMCI::CodeInstallResult CodeInstaller::gather_metadata(JVMCIObject target, JVMCIObject compiled_code, CodeMetadata& metadata, JVMCI_TRAPS) {
 540   assert(JVMCIENV->is_hotspot(), "AOT code is executed only in HotSpot mode");
 541   CodeBuffer buffer("JVMCI Compiler CodeBuffer for Metadata");
 542   AOTOopRecorder* recorder = new AOTOopRecorder(this, &_arena, true);
 543   initialize_dependencies(compiled_code, recorder, JVMCI_CHECK_OK);
 544 
 545   metadata.set_oop_recorder(recorder);
 546 
 547   // Get instructions and constants CodeSections early because we need it.
 548   _instructions = buffer.insts();
 549   _constants = buffer.consts();
 550   buffer.set_immutable_PIC(_immutable_pic_compilation);
 551 
 552   initialize_fields(target, compiled_code, JVMCI_CHECK_OK);
 553   JVMCI::CodeInstallResult result = initialize_buffer(buffer, false, JVMCI_CHECK_OK);
 554   if (result != JVMCI::ok) {
 555     return result;
 556   }
 557 
 558   _debug_recorder->pcs_size(); // create the sentinel record
 559 
 560   assert(_debug_recorder->pcs_length() >= 2, "must be at least 2");
 561 
 562   metadata.set_pc_desc(_debug_recorder->pcs(), _debug_recorder->pcs_length());
 563   metadata.set_scopes(_debug_recorder->stream()->buffer(), _debug_recorder->data_size());
 564   metadata.set_exception_table(&_exception_handler_table);
 565   metadata.set_implicit_exception_table(&_implicit_exception_table);
 566 
 567   RelocBuffer* reloc_buffer = metadata.get_reloc_buffer();
 568 
 569   reloc_buffer->ensure_size(buffer.total_relocation_size());
 570   size_t size = (size_t) buffer.copy_relocations_to(reloc_buffer->begin(), (CodeBuffer::csize_t) reloc_buffer->size(), true);
 571   reloc_buffer->set_size(size);
 572   return JVMCI::ok;
 573 }
 574 #endif // INCLUDE_AOT
 575 
 576 // constructor used to create a method
 577 JVMCI::CodeInstallResult CodeInstaller::install(JVMCICompiler* compiler,
 578     JVMCIObject target,
 579     JVMCIObject compiled_code,
 580     CodeBlob*& cb,
 581     JVMCIObject installed_code,
 582     FailedSpeculation** failed_speculations,
 583     char* speculations,
 584     int speculations_len,
 585     JVMCI_TRAPS) {
 586 
 587   CodeBuffer buffer("JVMCI Compiler CodeBuffer");
 588   OopRecorder* recorder = new OopRecorder(&_arena, true);
 589   initialize_dependencies(compiled_code, recorder, JVMCI_CHECK_OK);
 590 
 591   // Get instructions and constants CodeSections early because we need it.
 592   _instructions = buffer.insts();
 593   _constants = buffer.consts();
 594 #if INCLUDE_AOT
 595   buffer.set_immutable_PIC(_immutable_pic_compilation);
 596 #endif
 597 
 598   initialize_fields(target, compiled_code, JVMCI_CHECK_OK);
 599   JVMCI::CodeInstallResult result = initialize_buffer(buffer, true, JVMCI_CHECK_OK);
 600   if (result != JVMCI::ok) {
 601     return result;
 602   }
 603 
 604   int stack_slots = _total_frame_size / HeapWordSize; // conversion to words
 605 
 606   if (!jvmci_env()->isa_HotSpotCompiledNmethod(compiled_code)) {
 607     JVMCIObject stubName = jvmci_env()->get_HotSpotCompiledCode_name(compiled_code);
 608     if (stubName.is_null()) {
 609       JVMCI_ERROR_OK("stub should have a name");
 610     }
 611     char* name = strdup(jvmci_env()->as_utf8_string(stubName));
 612     cb = RuntimeStub::new_runtime_stub(name,
 613                                        &buffer,
 614                                        CodeOffsets::frame_never_safe,
 615                                        stack_slots,
 616                                        _debug_recorder->_oopmaps,
 617                                        false);
 618     result = JVMCI::ok;
 619   } else {
 620     JVMCICompileState* compile_state = (JVMCICompileState*) (address) jvmci_env()->get_HotSpotCompiledNmethod_compileState(compiled_code);
 621     if (compile_state != NULL) {
 622       jvmci_env()->set_compile_state(compile_state);
 623     }
 624 
 625     methodHandle method = jvmci_env()->asMethod(jvmci_env()->get_HotSpotCompiledNmethod_method(compiled_code));
 626     jint entry_bci = jvmci_env()->get_HotSpotCompiledNmethod_entryBCI(compiled_code);
 627     bool has_unsafe_access = jvmci_env()->get_HotSpotCompiledNmethod_hasUnsafeAccess(compiled_code) == JNI_TRUE;
 628     jint id = jvmci_env()->get_HotSpotCompiledNmethod_id(compiled_code);
 629     if (id == -1) {
 630       // Make sure a valid compile_id is associated with every compile
 631       id = CompileBroker::assign_compile_id_unlocked(Thread::current(), method, entry_bci);
 632       jvmci_env()->set_HotSpotCompiledNmethod_id(compiled_code, id);
 633     }
 634     if (!jvmci_env()->isa_HotSpotNmethod(installed_code)) {
 635       JVMCI_THROW_MSG_(IllegalArgumentException, "InstalledCode object must be a HotSpotNmethod when installing a HotSpotCompiledNmethod", JVMCI::ok);
 636     }
 637 
 638     JVMCIObject mirror = installed_code;
 639     nmethod* nm = NULL;
 640     result = runtime()->register_method(jvmci_env(), method, nm, entry_bci, &_offsets, _orig_pc_offset, &buffer,
 641                                         stack_slots, _debug_recorder->_oopmaps, &_exception_handler_table, &_implicit_exception_table,
 642                                         compiler, _debug_recorder, _dependencies, id,
 643                                         _has_monitors, has_unsafe_access, _has_wide_vector, compiled_code, mirror,
 644                                         failed_speculations, speculations, speculations_len);
 645     cb = nm->as_codeblob_or_null();
 646     if (nm != NULL && compile_state == NULL) {
 647       DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler);
 648       bool printnmethods = directive->PrintAssemblyOption || directive->PrintNMethodsOption;
 649       if (!printnmethods && (PrintDebugInfo || PrintRelocations || PrintDependencies || PrintExceptionHandlers)) {
 650         nm->print_nmethod(printnmethods);
 651       }
 652       DirectivesStack::release(directive);
 653     }
 654   }
 655 
 656   if (cb != NULL) {
 657     // Make sure the pre-calculated constants section size was correct.
 658     guarantee((cb->code_begin() - cb->content_begin()) >= _constants_size, "%d < %d", (int)(cb->code_begin() - cb->content_begin()), _constants_size);
 659   }
 660   return result;
 661 }
 662 
 663 void CodeInstaller::initialize_fields(JVMCIObject target, JVMCIObject compiled_code, JVMCI_TRAPS) {
 664   if (jvmci_env()->isa_HotSpotCompiledNmethod(compiled_code)) {
 665     JVMCIObject hotspotJavaMethod = jvmci_env()->get_HotSpotCompiledNmethod_method(compiled_code);
 666     methodHandle method = jvmci_env()->asMethod(hotspotJavaMethod);
 667     _parameter_count = method->size_of_parameters();
 668     TRACE_jvmci_2("installing code for %s", method->name_and_sig_as_C_string());
 669   } else {
 670     // Must be a HotSpotCompiledRuntimeStub.
 671     // Only used in OopMap constructor for non-product builds
 672     _parameter_count = 0;
 673   }
 674   _sites_handle = jvmci_env()->get_HotSpotCompiledCode_sites(compiled_code);
 675 
 676   _code_handle = jvmci_env()->get_HotSpotCompiledCode_targetCode(compiled_code);
 677   _code_size = jvmci_env()->get_HotSpotCompiledCode_targetCodeSize(compiled_code);
 678   _total_frame_size = jvmci_env()->get_HotSpotCompiledCode_totalFrameSize(compiled_code);
 679 
 680   JVMCIObject deoptRescueSlot = jvmci_env()->get_HotSpotCompiledCode_deoptRescueSlot(compiled_code);
 681   if (deoptRescueSlot.is_null()) {
 682     _orig_pc_offset = -1;
 683   } else {
 684     _orig_pc_offset = jvmci_env()->get_StackSlot_offset(deoptRescueSlot);
 685     if (jvmci_env()->get_StackSlot_addFrameSize(deoptRescueSlot)) {
 686       _orig_pc_offset += _total_frame_size;
 687     }
 688     if (_orig_pc_offset < 0) {
 689       JVMCI_ERROR("invalid deopt rescue slot: %d", _orig_pc_offset);
 690     }
 691   }
 692 
 693   // Pre-calculate the constants section size.  This is required for PC-relative addressing.
 694   _data_section_handle = jvmci_env()->get_HotSpotCompiledCode_dataSection(compiled_code);
 695   if ((_constants->alignment() % jvmci_env()->get_HotSpotCompiledCode_dataSectionAlignment(compiled_code)) != 0) {
 696     JVMCI_ERROR("invalid data section alignment: %d", jvmci_env()->get_HotSpotCompiledCode_dataSectionAlignment(compiled_code));
 697   }
 698   _constants_size = JVMCIENV->get_length(data_section());
 699 
 700   _data_section_patches_handle = jvmci_env()->get_HotSpotCompiledCode_dataSectionPatches(compiled_code);
 701 
 702 #ifndef PRODUCT
 703   _comments_handle = jvmci_env()->get_HotSpotCompiledCode_comments(compiled_code);
 704 #endif
 705 
 706   _next_call_type = INVOKE_INVALID;
 707 
 708   _has_wide_vector = false;
 709 
 710   JVMCIObject arch = jvmci_env()->get_TargetDescription_arch(target);
 711   _word_kind_handle = jvmci_env()->get_Architecture_wordKind(arch);
 712 }
 713 
 714 int CodeInstaller::estimate_stubs_size(JVMCI_TRAPS) {
 715   // Estimate the number of static and aot call stubs that might be emitted.
 716   int static_call_stubs = 0;
 717   int aot_call_stubs = 0;
 718   int trampoline_stubs = 0;
 719   JVMCIObjectArray sites = this->sites();
 720   for (int i = 0; i < JVMCIENV->get_length(sites); i++) {
 721     JVMCIObject site = JVMCIENV->get_object_at(sites, i);
 722     if (!site.is_null()) {
 723       if (jvmci_env()->isa_site_Mark(site)) {
 724         JVMCIObject id_obj = jvmci_env()->get_site_Mark_id(site);
 725         if (id_obj.is_non_null()) {
 726           if (!jvmci_env()->is_boxing_object(T_INT, id_obj)) {
 727             JVMCI_ERROR_0("expected Integer id, got %s", jvmci_env()->klass_name(id_obj));
 728           }
 729           jint id = jvmci_env()->get_boxed_value(T_INT, id_obj).i;
 730           switch (id) {
 731             case INVOKEINTERFACE:
 732             case INVOKEVIRTUAL:
 733               trampoline_stubs++;
 734               break;
 735             case INVOKESTATIC:
 736             case INVOKESPECIAL:
 737               static_call_stubs++;
 738               trampoline_stubs++;
 739               break;
 740             default:
 741               break;
 742           }
 743         }
 744       }
 745 #if INCLUDE_AOT
 746       if (UseAOT && jvmci_env()->isa_site_Call(site)) {
 747         JVMCIObject target = jvmci_env()-> get_site_Call_target(site);
 748         if (!jvmci_env()->isa_HotSpotForeignCallTarget(target)) {
 749           // Add far aot trampolines.
 750           aot_call_stubs++;
 751         }
 752       }
 753 #endif
 754     }
 755   }
 756   int size = static_call_stubs * CompiledStaticCall::to_interp_stub_size();
 757   size += trampoline_stubs * CompiledStaticCall::to_trampoline_stub_size();
 758 #if INCLUDE_AOT
 759   size += aot_call_stubs * CompiledStaticCall::to_aot_stub_size();
 760 #endif
 761   return size;
 762 }
 763 
 764 // perform data and call relocation on the CodeBuffer
 765 JVMCI::CodeInstallResult CodeInstaller::initialize_buffer(CodeBuffer& buffer, bool check_size, JVMCI_TRAPS) {
 766   HandleMark hm;
 767   JVMCIObjectArray sites = this->sites();
 768   int locs_buffer_size = JVMCIENV->get_length(sites) * (relocInfo::length_limit + sizeof(relocInfo));
 769 
 770   // Allocate enough space in the stub section for the static call
 771   // stubs.  Stubs have extra relocs but they are managed by the stub
 772   // section itself so they don't need to be accounted for in the
 773   // locs_buffer above.
 774   int stubs_size = estimate_stubs_size(JVMCI_CHECK_OK);
 775   int total_size = align_up(_code_size, buffer.insts()->alignment()) + align_up(_constants_size, buffer.consts()->alignment()) + align_up(stubs_size, buffer.stubs()->alignment());
 776 
 777   if (check_size && total_size > JVMCINMethodSizeLimit) {
 778     return JVMCI::code_too_large;
 779   }
 780 
 781   buffer.initialize(total_size, locs_buffer_size);
 782   if (buffer.blob() == NULL) {
 783     return JVMCI::cache_full;
 784   }
 785   buffer.initialize_stubs_size(stubs_size);
 786   buffer.initialize_consts_size(_constants_size);
 787 
 788   _debug_recorder = new DebugInformationRecorder(_oop_recorder);
 789   _debug_recorder->set_oopmaps(new OopMapSet());
 790 
 791   buffer.initialize_oop_recorder(_oop_recorder);
 792 
 793   // copy the constant data into the newly created CodeBuffer
 794   address end_data = _constants->start() + _constants_size;
 795   JVMCIENV->copy_bytes_to(data_section(), (jbyte*) _constants->start(), 0, _constants_size);
 796   _constants->set_end(end_data);
 797 
 798   // copy the code into the newly created CodeBuffer
 799   address end_pc = _instructions->start() + _code_size;
 800   guarantee(_instructions->allocates2(end_pc), "initialize should have reserved enough space for all the code");
 801   JVMCIENV->copy_bytes_to(code(), (jbyte*) _instructions->start(), 0, _code_size);
 802   _instructions->set_end(end_pc);
 803 
 804   for (int i = 0; i < JVMCIENV->get_length(data_section_patches()); i++) {
 805     // HandleMark hm(THREAD);
 806     JVMCIObject patch = JVMCIENV->get_object_at(data_section_patches(), i);
 807     if (patch.is_null()) {
 808       JVMCI_THROW_(NullPointerException, JVMCI::ok);
 809     }
 810     JVMCIObject reference = jvmci_env()->get_site_DataPatch_reference(patch);
 811     if (reference.is_null()) {
 812       JVMCI_THROW_(NullPointerException, JVMCI::ok);
 813     }
 814     if (!jvmci_env()->isa_site_ConstantReference(reference)) {
 815       JVMCI_ERROR_OK("invalid patch in data section: %s", jvmci_env()->klass_name(reference));
 816     }
 817     JVMCIObject constant = jvmci_env()->get_site_ConstantReference_constant(reference);
 818     if (constant.is_null()) {
 819       JVMCI_THROW_(NullPointerException, JVMCI::ok);
 820     }
 821     address dest = _constants->start() + jvmci_env()->get_site_Site_pcOffset(patch);
 822     if (jvmci_env()->isa_HotSpotMetaspaceConstantImpl(constant)) {
 823       if (jvmci_env()->get_HotSpotMetaspaceConstantImpl_compressed(constant)) {
 824 #ifdef _LP64
 825         *((narrowKlass*) dest) = record_narrow_metadata_reference(_constants, dest, constant, JVMCI_CHECK_OK);
 826 #else
 827         JVMCI_ERROR_OK("unexpected compressed Klass* in 32-bit mode");
 828 #endif
 829       } else {
 830         *((void**) dest) = record_metadata_reference(_constants, dest, constant, JVMCI_CHECK_OK);
 831       }
 832     } else if (jvmci_env()->isa_HotSpotObjectConstantImpl(constant)) {
 833       Handle obj = jvmci_env()->asConstant(constant, JVMCI_CHECK_OK);
 834       jobject value = JNIHandles::make_local(obj());
 835       int oop_index = _oop_recorder->find_index(value);
 836 
 837       if (jvmci_env()->get_HotSpotObjectConstantImpl_compressed(constant)) {
 838 #ifdef _LP64
 839         _constants->relocate(dest, oop_Relocation::spec(oop_index), relocInfo::narrow_oop_in_const);
 840 #else
 841         JVMCI_ERROR_OK("unexpected compressed oop in 32-bit mode");
 842 #endif
 843       } else {
 844         _constants->relocate(dest, oop_Relocation::spec(oop_index));
 845       }
 846     } else {
 847       JVMCI_ERROR_OK("invalid constant in data section: %s", jvmci_env()->klass_name(constant));
 848     }
 849   }
 850   jint last_pc_offset = -1;
 851   for (int i = 0; i < JVMCIENV->get_length(sites); i++) {
 852     // HandleMark hm(THREAD);
 853     JVMCIObject site = JVMCIENV->get_object_at(sites, i);
 854     if (site.is_null()) {
 855       JVMCI_THROW_(NullPointerException, JVMCI::ok);
 856     }
 857 
 858     jint pc_offset = jvmci_env()->get_site_Site_pcOffset(site);
 859 
 860     if (jvmci_env()->isa_site_Call(site)) {
 861       TRACE_jvmci_4("call at %i", pc_offset);
 862       site_Call(buffer, pc_offset, site, JVMCI_CHECK_OK);
 863     } else if (jvmci_env()->isa_site_Infopoint(site)) {
 864       // three reasons for infopoints denote actual safepoints
 865       JVMCIObject reason = jvmci_env()->get_site_Infopoint_reason(site);
 866       if (JVMCIENV->equals(reason, jvmci_env()->get_site_InfopointReason_SAFEPOINT()) ||
 867           JVMCIENV->equals(reason, jvmci_env()->get_site_InfopointReason_CALL()) ||
 868           JVMCIENV->equals(reason, jvmci_env()->get_site_InfopointReason_IMPLICIT_EXCEPTION())) {
 869         TRACE_jvmci_4("safepoint at %i", pc_offset);
 870         site_Safepoint(buffer, pc_offset, site, JVMCI_CHECK_OK);
 871         if (_orig_pc_offset < 0) {
 872           JVMCI_ERROR_OK("method contains safepoint, but has no deopt rescue slot");
 873         }
 874         if (JVMCIENV->equals(reason, jvmci_env()->get_site_InfopointReason_IMPLICIT_EXCEPTION())) {
 875           TRACE_jvmci_4("implicit exception at %i", pc_offset);
 876           _implicit_exception_table.add_deoptimize(pc_offset);
 877         }
 878       } else {
 879         TRACE_jvmci_4("infopoint at %i", pc_offset);
 880         site_Infopoint(buffer, pc_offset, site, JVMCI_CHECK_OK);
 881       }
 882     } else if (jvmci_env()->isa_site_DataPatch(site)) {
 883       TRACE_jvmci_4("datapatch at %i", pc_offset);
 884       site_DataPatch(buffer, pc_offset, site, JVMCI_CHECK_OK);
 885     } else if (jvmci_env()->isa_site_Mark(site)) {
 886       TRACE_jvmci_4("mark at %i", pc_offset);
 887       site_Mark(buffer, pc_offset, site, JVMCI_CHECK_OK);
 888     } else if (jvmci_env()->isa_site_ExceptionHandler(site)) {
 889       TRACE_jvmci_4("exceptionhandler at %i", pc_offset);
 890       site_ExceptionHandler(pc_offset, site);
 891     } else {
 892       JVMCI_ERROR_OK("unexpected site subclass: %s", jvmci_env()->klass_name(site));
 893     }
 894     last_pc_offset = pc_offset;
 895 
 896     JavaThread* thread = JavaThread::current();
 897     if (SafepointMechanism::should_block(thread)) {
 898       // this is a hacky way to force a safepoint check but nothing else was jumping out at me.
 899       ThreadToNativeFromVM ttnfv(thread);
 900     }
 901   }
 902 
 903 #ifndef PRODUCT
 904   if (comments().is_non_null()) {
 905     for (int i = 0; i < JVMCIENV->get_length(comments()); i++) {
 906       JVMCIObject comment = JVMCIENV->get_object_at(comments(), i);
 907       assert(jvmci_env()->isa_HotSpotCompiledCode_Comment(comment), "cce");
 908       jint offset = jvmci_env()->get_HotSpotCompiledCode_Comment_pcOffset(comment);
 909       const char* text = jvmci_env()->as_utf8_string(jvmci_env()->get_HotSpotCompiledCode_Comment_text(comment));
 910       buffer.block_comment(offset, text);
 911     }
 912   }
 913 #endif
 914   return JVMCI::ok;
 915 }
 916 
 917 void CodeInstaller::assumption_NoFinalizableSubclass(JVMCIObject assumption) {
 918   JVMCIObject receiverType_handle = jvmci_env()->get_Assumptions_NoFinalizableSubclass_receiverType(assumption);
 919   Klass* receiverType = jvmci_env()->asKlass(receiverType_handle);
 920   _dependencies->assert_has_no_finalizable_subclasses(receiverType);
 921 }
 922 
 923 void CodeInstaller::assumption_ConcreteSubtype(JVMCIObject assumption) {
 924   JVMCIObject context_handle = jvmci_env()->get_Assumptions_ConcreteSubtype_context(assumption);
 925   JVMCIObject subtype_handle = jvmci_env()->get_Assumptions_ConcreteSubtype_subtype(assumption);
 926   Klass* context = jvmci_env()->asKlass(context_handle);
 927   Klass* subtype = jvmci_env()->asKlass(subtype_handle);
 928 
 929   assert(context->is_abstract(), "");
 930   _dependencies->assert_abstract_with_unique_concrete_subtype(context, subtype);
 931 }
 932 
 933 void CodeInstaller::assumption_LeafType(JVMCIObject assumption) {
 934   JVMCIObject context_handle = jvmci_env()->get_Assumptions_LeafType_context(assumption);
 935   Klass* context = jvmci_env()->asKlass(context_handle);
 936 
 937   _dependencies->assert_leaf_type(context);
 938 }
 939 
 940 void CodeInstaller::assumption_ConcreteMethod(JVMCIObject assumption) {
 941   JVMCIObject impl_handle = jvmci_env()->get_Assumptions_ConcreteMethod_impl(assumption);
 942   JVMCIObject context_handle = jvmci_env()->get_Assumptions_ConcreteMethod_context(assumption);
 943 
 944   methodHandle impl = jvmci_env()->asMethod(impl_handle);
 945   Klass* context = jvmci_env()->asKlass(context_handle);
 946 
 947   _dependencies->assert_unique_concrete_method(context, impl());
 948 }
 949 
 950 void CodeInstaller::assumption_CallSiteTargetValue(JVMCIObject assumption, JVMCI_TRAPS) {
 951   JVMCIObject callSiteConstant = jvmci_env()->get_Assumptions_CallSiteTargetValue_callSite(assumption);
 952   Handle callSite = jvmci_env()->asConstant(callSiteConstant, JVMCI_CHECK);
 953   JVMCIObject methodConstant = jvmci_env()->get_Assumptions_CallSiteTargetValue_methodHandle(assumption);
 954   Handle methodHandle = jvmci_env()->asConstant(methodConstant, JVMCI_CHECK);
 955   _dependencies->assert_call_site_target_value(callSite(), methodHandle());
 956 }
 957 
 958 void CodeInstaller::site_ExceptionHandler(jint pc_offset, JVMCIObject exc) {
 959   jint handler_offset = jvmci_env()->get_site_ExceptionHandler_handlerPos(exc);
 960 
 961   // Subtable header
 962   _exception_handler_table.add_entry(HandlerTableEntry(1, pc_offset, 0));
 963 
 964   // Subtable entry
 965   _exception_handler_table.add_entry(HandlerTableEntry(-1, handler_offset, 0));
 966 }
 967 
 968 // If deoptimization happens, the interpreter should reexecute these bytecodes.
 969 // This function mainly helps the compilers to set up the reexecute bit.
 970 static bool bytecode_should_reexecute(Bytecodes::Code code) {
 971   switch (code) {
 972     case Bytecodes::_invokedynamic:
 973     case Bytecodes::_invokevirtual:
 974     case Bytecodes::_invokeinterface:
 975     case Bytecodes::_invokespecial:
 976     case Bytecodes::_invokestatic:
 977       return false;
 978     default:
 979       return true;
 980     }
 981   return true;
 982 }
 983 
 984 GrowableArray<ScopeValue*>* CodeInstaller::record_virtual_objects(JVMCIObject debug_info, JVMCI_TRAPS) {
 985   JVMCIObjectArray virtualObjects = jvmci_env()->get_DebugInfo_virtualObjectMapping(debug_info);
 986   if (virtualObjects.is_null()) {
 987     return NULL;
 988   }
 989   GrowableArray<ScopeValue*>* objects = new GrowableArray<ScopeValue*>(JVMCIENV->get_length(virtualObjects), JVMCIENV->get_length(virtualObjects), NULL);
 990   // Create the unique ObjectValues
 991   for (int i = 0; i < JVMCIENV->get_length(virtualObjects); i++) {
 992     // HandleMark hm(THREAD);
 993     JVMCIObject value = JVMCIENV->get_object_at(virtualObjects, i);
 994     int id = jvmci_env()->get_VirtualObject_id(value);
 995     JVMCIObject type = jvmci_env()->get_VirtualObject_type(value);
 996     bool is_auto_box = jvmci_env()->get_VirtualObject_isAutoBox(value);
 997     Klass* klass = jvmci_env()->asKlass(type);
 998     oop javaMirror = klass->java_mirror();
 999     ScopeValue *klass_sv = new ConstantOopWriteValue(JNIHandles::make_local(Thread::current(), javaMirror));
1000     ObjectValue* sv = is_auto_box ? new AutoBoxObjectValue(id, klass_sv) : new ObjectValue(id, klass_sv);
1001     if (id < 0 || id >= objects->length()) {
1002       JVMCI_ERROR_NULL("virtual object id %d out of bounds", id);
1003     }
1004     if (objects->at(id) != NULL) {
1005       JVMCI_ERROR_NULL("duplicate virtual object id %d", id);
1006     }
1007     objects->at_put(id, sv);
1008   }
1009   // All the values which could be referenced by the VirtualObjects
1010   // exist, so now describe all the VirtualObjects themselves.
1011   for (int i = 0; i < JVMCIENV->get_length(virtualObjects); i++) {
1012     // HandleMark hm(THREAD);
1013     JVMCIObject value = JVMCIENV->get_object_at(virtualObjects, i);
1014     int id = jvmci_env()->get_VirtualObject_id(value);
1015     record_object_value(objects->at(id)->as_ObjectValue(), value, objects, JVMCI_CHECK_NULL);
1016   }
1017   _debug_recorder->dump_object_pool(objects);
1018   return objects;
1019 }
1020 
1021 void CodeInstaller::record_scope(jint pc_offset, JVMCIObject debug_info, ScopeMode scope_mode, bool return_oop, JVMCI_TRAPS) {
1022   JVMCIObject position = jvmci_env()->get_DebugInfo_bytecodePosition(debug_info);
1023   if (position.is_null()) {
1024     // Stubs do not record scope info, just oop maps
1025     return;
1026   }
1027 
1028   GrowableArray<ScopeValue*>* objectMapping;
1029   if (scope_mode == CodeInstaller::FullFrame) {
1030     objectMapping = record_virtual_objects(debug_info, JVMCI_CHECK);
1031   } else {
1032     objectMapping = NULL;
1033   }
1034   record_scope(pc_offset, position, scope_mode, objectMapping, return_oop, JVMCI_CHECK);
1035 }
1036 
1037 int CodeInstaller::map_jvmci_bci(int bci) {
1038   if (bci < 0) {
1039     if (bci == jvmci_env()->get_BytecodeFrame_BEFORE_BCI()) {
1040       return BeforeBci;
1041     } else if (bci == jvmci_env()->get_BytecodeFrame_AFTER_BCI()) {
1042       return AfterBci;
1043     } else if (bci == jvmci_env()->get_BytecodeFrame_UNWIND_BCI()) {
1044       return UnwindBci;
1045     } else if (bci == jvmci_env()->get_BytecodeFrame_AFTER_EXCEPTION_BCI()) {
1046       return AfterExceptionBci;
1047     } else if (bci == jvmci_env()->get_BytecodeFrame_UNKNOWN_BCI()) {
1048       return UnknownBci;
1049     } else if (bci == jvmci_env()->get_BytecodeFrame_INVALID_FRAMESTATE_BCI()) {
1050       return InvalidFrameStateBci;
1051     }
1052     ShouldNotReachHere();
1053   }
1054   return bci;
1055 }
1056 
1057 void CodeInstaller::record_scope(jint pc_offset, JVMCIObject position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, bool return_oop, JVMCI_TRAPS) {
1058   JVMCIObject frame;
1059   if (scope_mode == CodeInstaller::FullFrame) {
1060     if (!jvmci_env()->isa_BytecodeFrame(position)) {
1061       JVMCI_ERROR("Full frame expected for debug info at %i", pc_offset);
1062     }
1063     frame = position;
1064   }
1065   JVMCIObject caller_frame = jvmci_env()->get_BytecodePosition_caller(position);
1066   if (caller_frame.is_non_null()) {
1067     record_scope(pc_offset, caller_frame, scope_mode, objects, return_oop, JVMCI_CHECK);
1068   }
1069 
1070   JVMCIObject hotspot_method = jvmci_env()->get_BytecodePosition_method(position);
1071   Method* method = jvmci_env()->asMethod(hotspot_method);
1072   jint bci = map_jvmci_bci(jvmci_env()->get_BytecodePosition_bci(position));
1073   if (bci == jvmci_env()->get_BytecodeFrame_BEFORE_BCI()) {
1074     bci = SynchronizationEntryBCI;
1075   }
1076 
1077   TRACE_jvmci_2("Recording scope pc_offset=%d bci=%d method=%s", pc_offset, bci, method->name_and_sig_as_C_string());
1078 
1079   bool reexecute = false;
1080   if (frame.is_non_null()) {
1081     if (bci < 0){
1082        reexecute = false;
1083     } else {
1084       Bytecodes::Code code = Bytecodes::java_code_at(method, method->bcp_from(bci));
1085       reexecute = bytecode_should_reexecute(code);
1086       if (frame.is_non_null()) {
1087         reexecute = (jvmci_env()->get_BytecodeFrame_duringCall(frame) == JNI_FALSE);
1088       }
1089     }
1090   }
1091 
1092   DebugToken* locals_token = NULL;
1093   DebugToken* expressions_token = NULL;
1094   DebugToken* monitors_token = NULL;
1095   bool throw_exception = false;
1096 
1097   if (frame.is_non_null()) {
1098     jint local_count = jvmci_env()->get_BytecodeFrame_numLocals(frame);
1099     jint expression_count = jvmci_env()->get_BytecodeFrame_numStack(frame);
1100     jint monitor_count = jvmci_env()->get_BytecodeFrame_numLocks(frame);
1101     if (monitor_count > 0 && !_has_monitors) {
1102       _has_monitors = true;
1103     }
1104     JVMCIObjectArray values = jvmci_env()->get_BytecodeFrame_values(frame);
1105     JVMCIObjectArray slotKinds = jvmci_env()->get_BytecodeFrame_slotKinds(frame);
1106 
1107     if (values.is_null() || slotKinds.is_null()) {
1108       JVMCI_THROW(NullPointerException);
1109     }
1110     if (local_count + expression_count + monitor_count != JVMCIENV->get_length(values)) {
1111       JVMCI_ERROR("unexpected values length %d in scope (%d locals, %d expressions, %d monitors)", JVMCIENV->get_length(values), local_count, expression_count, monitor_count);
1112     }
1113     if (local_count + expression_count != JVMCIENV->get_length(slotKinds)) {
1114       JVMCI_ERROR("unexpected slotKinds length %d in scope (%d locals, %d expressions)", JVMCIENV->get_length(slotKinds), local_count, expression_count);
1115     }
1116 
1117     GrowableArray<ScopeValue*>* locals = local_count > 0 ? new GrowableArray<ScopeValue*> (local_count) : NULL;
1118     GrowableArray<ScopeValue*>* expressions = expression_count > 0 ? new GrowableArray<ScopeValue*> (expression_count) : NULL;
1119     GrowableArray<MonitorValue*>* monitors = monitor_count > 0 ? new GrowableArray<MonitorValue*> (monitor_count) : NULL;
1120 
1121     TRACE_jvmci_2("Scope at bci %d with %d values", bci, JVMCIENV->get_length(values));
1122     TRACE_jvmci_2("%d locals %d expressions, %d monitors", local_count, expression_count, monitor_count);
1123 
1124     for (jint i = 0; i < JVMCIENV->get_length(values); i++) {
1125       // HandleMark hm(THREAD);
1126       ScopeValue* second = NULL;
1127       JVMCIObject value = JVMCIENV->get_object_at(values, i);
1128       if (i < local_count) {
1129         BasicType type = jvmci_env()->kindToBasicType(JVMCIENV->get_object_at(slotKinds, i), JVMCI_CHECK);
1130         ScopeValue* first = get_scope_value(value, type, objects, second, JVMCI_CHECK);
1131         if (second != NULL) {
1132           locals->append(second);
1133         }
1134         locals->append(first);
1135       } else if (i < local_count + expression_count) {
1136         BasicType type = jvmci_env()->kindToBasicType(JVMCIENV->get_object_at(slotKinds, i), JVMCI_CHECK);
1137         ScopeValue* first = get_scope_value(value, type, objects, second, JVMCI_CHECK);
1138         if (second != NULL) {
1139           expressions->append(second);
1140         }
1141         expressions->append(first);
1142       } else {
1143         MonitorValue *monitor = get_monitor_value(value, objects, JVMCI_CHECK);
1144         monitors->append(monitor);
1145       }
1146       if (second != NULL) {
1147         i++;
1148         if (i >= JVMCIENV->get_length(values) || !JVMCIENV->equals(JVMCIENV->get_object_at(values, i), jvmci_env()->get_Value_ILLEGAL())) {
1149           JVMCI_ERROR("double-slot value not followed by Value.ILLEGAL");
1150         }
1151       }
1152     }
1153 
1154     locals_token = _debug_recorder->create_scope_values(locals);
1155     expressions_token = _debug_recorder->create_scope_values(expressions);
1156     monitors_token = _debug_recorder->create_monitor_values(monitors);
1157 
1158     throw_exception = jvmci_env()->get_BytecodeFrame_rethrowException(frame) == JNI_TRUE;
1159   }
1160 
1161   _debug_recorder->describe_scope(pc_offset, method, NULL, bci, reexecute, throw_exception, false, return_oop,
1162                                   locals_token, expressions_token, monitors_token);
1163 }
1164 
1165 void CodeInstaller::site_Safepoint(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) {
1166   JVMCIObject debug_info = jvmci_env()->get_site_Infopoint_debugInfo(site);
1167   if (debug_info.is_null()) {
1168     JVMCI_ERROR("debug info expected at safepoint at %i", pc_offset);
1169   }
1170 
1171   // address instruction = _instructions->start() + pc_offset;
1172   // jint next_pc_offset = Assembler::locate_next_instruction(instruction) - _instructions->start();
1173   OopMap *map = create_oop_map(debug_info, JVMCI_CHECK);
1174   _debug_recorder->add_safepoint(pc_offset, map);
1175   record_scope(pc_offset, debug_info, CodeInstaller::FullFrame, JVMCI_CHECK);
1176   _debug_recorder->end_safepoint(pc_offset);
1177 }
1178 
1179 void CodeInstaller::site_Infopoint(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) {
1180   JVMCIObject debug_info = jvmci_env()->get_site_Infopoint_debugInfo(site);
1181   if (debug_info.is_null()) {
1182     JVMCI_ERROR("debug info expected at infopoint at %i", pc_offset);
1183   }
1184 
1185   // We'd like to check that pc_offset is greater than the
1186   // last pc recorded with _debug_recorder (raising an exception if not)
1187   // but DebugInformationRecorder doesn't have sufficient public API.
1188 
1189   _debug_recorder->add_non_safepoint(pc_offset);
1190   record_scope(pc_offset, debug_info, CodeInstaller::BytecodePosition, JVMCI_CHECK);
1191   _debug_recorder->end_non_safepoint(pc_offset);
1192 }
1193 
1194 void CodeInstaller::site_Call(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) {
1195   JVMCIObject target = jvmci_env()->get_site_Call_target(site);
1196   JVMCIObject hotspot_method; // JavaMethod
1197   JVMCIObject foreign_call;
1198 
1199   if (jvmci_env()->isa_HotSpotForeignCallTarget(target)) {
1200     foreign_call = target;
1201   } else {
1202     hotspot_method = target;
1203   }
1204 
1205   JVMCIObject debug_info = jvmci_env()->get_site_Infopoint_debugInfo(site);
1206 
1207   assert(hotspot_method.is_non_null() ^ foreign_call.is_non_null(), "Call site needs exactly one type");
1208 
1209   NativeInstruction* inst = nativeInstruction_at(_instructions->start() + pc_offset);
1210   jint next_pc_offset = CodeInstaller::pd_next_offset(inst, pc_offset, hotspot_method, JVMCI_CHECK);
1211 
1212   if (debug_info.is_non_null()) {
1213     OopMap *map = create_oop_map(debug_info, JVMCI_CHECK);
1214     _debug_recorder->add_safepoint(next_pc_offset, map);
1215 
1216     bool return_oop = hotspot_method.is_non_null() && jvmci_env()->asMethod(hotspot_method)->is_returning_oop();
1217 
1218     record_scope(next_pc_offset, debug_info, CodeInstaller::FullFrame, return_oop, JVMCI_CHECK);
1219   }
1220 
1221   if (foreign_call.is_non_null()) {
1222     jlong foreign_call_destination = jvmci_env()->get_HotSpotForeignCallTarget_address(foreign_call);
1223     if (_immutable_pic_compilation) {
1224       // Use fake short distance during PIC compilation.
1225       foreign_call_destination = (jlong)(_instructions->start() + pc_offset);
1226     }
1227     CodeInstaller::pd_relocate_ForeignCall(inst, foreign_call_destination, JVMCI_CHECK);
1228   } else { // method != NULL
1229     if (debug_info.is_null()) {
1230       JVMCI_ERROR("debug info expected at call at %i", pc_offset);
1231     }
1232 
1233     TRACE_jvmci_3("method call");
1234     CodeInstaller::pd_relocate_JavaMethod(buffer, hotspot_method, pc_offset, JVMCI_CHECK);
1235     if (_next_call_type == INVOKESTATIC || _next_call_type == INVOKESPECIAL) {
1236       // Need a static call stub for transitions from compiled to interpreted.
1237       CompiledStaticCall::emit_to_interp_stub(buffer, _instructions->start() + pc_offset);
1238     }
1239 #if INCLUDE_AOT
1240     // Trampoline to far aot code.
1241     CompiledStaticCall::emit_to_aot_stub(buffer, _instructions->start() + pc_offset);
1242 #endif
1243   }
1244 
1245   _next_call_type = INVOKE_INVALID;
1246 
1247   if (debug_info.is_non_null()) {
1248     _debug_recorder->end_safepoint(next_pc_offset);
1249   }
1250 }
1251 
1252 void CodeInstaller::site_DataPatch(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) {
1253   JVMCIObject reference = jvmci_env()->get_site_DataPatch_reference(site);
1254   if (reference.is_null()) {
1255     JVMCI_THROW(NullPointerException);
1256   } else if (jvmci_env()->isa_site_ConstantReference(reference)) {
1257     JVMCIObject constant = jvmci_env()->get_site_ConstantReference_constant(reference);
1258     if (constant.is_null()) {
1259       JVMCI_THROW(NullPointerException);
1260     } else if (jvmci_env()->isa_DirectHotSpotObjectConstantImpl(constant)) {
1261       if (!JVMCIENV->is_hotspot()) {
1262         JVMCIObject string = JVMCIENV->call_HotSpotJVMCIRuntime_callToString(constant, JVMCI_CHECK);
1263         const char* to_string = JVMCIENV->as_utf8_string(string);
1264         JVMCI_THROW_MSG(IllegalArgumentException, err_msg("Direct object constant reached the backend: %s", to_string));
1265       }
1266       if (!_immutable_pic_compilation) {
1267         // Do not patch during PIC compilation.
1268         pd_patch_OopConstant(pc_offset, constant, JVMCI_CHECK);
1269       }
1270     } else if (jvmci_env()->isa_IndirectHotSpotObjectConstantImpl(constant)) {
1271       if (!_immutable_pic_compilation) {
1272         // Do not patch during PIC compilation.
1273         pd_patch_OopConstant(pc_offset, constant, JVMCI_CHECK);
1274       }
1275     } else if (jvmci_env()->isa_HotSpotMetaspaceConstantImpl(constant)) {
1276       if (!_immutable_pic_compilation) {
1277         pd_patch_MetaspaceConstant(pc_offset, constant, JVMCI_CHECK);
1278       }
1279 #if INCLUDE_AOT
1280     } else if (jvmci_env()->isa_HotSpotSentinelConstant(constant)) {
1281       if (!_immutable_pic_compilation) {
1282         JVMCI_ERROR("sentinel constant not supported for normal compiles: %s", jvmci_env()->klass_name(constant));
1283       }
1284 #endif
1285     } else {
1286       JVMCI_ERROR("unknown constant type in data patch: %s", jvmci_env()->klass_name(constant));
1287     }
1288   } else if (jvmci_env()->isa_site_DataSectionReference(reference)) {
1289     int data_offset = jvmci_env()->get_site_DataSectionReference_offset(reference);
1290     if (0 <= data_offset && data_offset < _constants_size) {
1291       pd_patch_DataSectionReference(pc_offset, data_offset, JVMCI_CHECK);
1292     } else {
1293       JVMCI_ERROR("data offset 0x%X points outside data section (size 0x%X)", data_offset, _constants_size);
1294     }
1295   } else {
1296     JVMCI_ERROR("unknown data patch type: %s", jvmci_env()->klass_name(reference));
1297   }
1298 }
1299 
1300 void CodeInstaller::site_Mark(CodeBuffer& buffer, jint pc_offset, JVMCIObject site, JVMCI_TRAPS) {
1301   JVMCIObject id_obj = jvmci_env()->get_site_Mark_id(site);
1302 
1303   if (id_obj.is_non_null()) {
1304     if (!jvmci_env()->is_boxing_object(T_INT, id_obj)) {
1305       JVMCI_ERROR("expected Integer id, got %s", jvmci_env()->klass_name(id_obj));
1306     }
1307     jint id = jvmci_env()->get_boxed_value(T_INT, id_obj).i;
1308 
1309     address pc = _instructions->start() + pc_offset;
1310 
1311     switch (id) {
1312       case UNVERIFIED_ENTRY:
1313         _offsets.set_value(CodeOffsets::Entry, pc_offset);
1314         break;
1315       case VERIFIED_ENTRY:
1316         _offsets.set_value(CodeOffsets::Verified_Entry, pc_offset);
1317         break;
1318       case OSR_ENTRY:
1319         _offsets.set_value(CodeOffsets::OSR_Entry, pc_offset);
1320         break;
1321       case EXCEPTION_HANDLER_ENTRY:
1322         _offsets.set_value(CodeOffsets::Exceptions, pc_offset);
1323         break;
1324       case DEOPT_HANDLER_ENTRY:
1325         _offsets.set_value(CodeOffsets::Deopt, pc_offset);
1326         break;
1327       case INVOKEVIRTUAL:
1328       case INVOKEINTERFACE:
1329       case INLINE_INVOKE:
1330       case INVOKESTATIC:
1331       case INVOKESPECIAL:
1332         _next_call_type = (MarkId) id;
1333         _invoke_mark_pc = pc;
1334         break;
1335       case POLL_NEAR:
1336       case POLL_FAR:
1337       case POLL_RETURN_NEAR:
1338       case POLL_RETURN_FAR:
1339         pd_relocate_poll(pc, id, JVMCI_CHECK);
1340         break;
1341       case CARD_TABLE_SHIFT:
1342       case CARD_TABLE_ADDRESS:
1343       case HEAP_TOP_ADDRESS:
1344       case HEAP_END_ADDRESS:
1345       case NARROW_KLASS_BASE_ADDRESS:
1346       case NARROW_OOP_BASE_ADDRESS:
1347       case CRC_TABLE_ADDRESS:
1348       case LOG_OF_HEAP_REGION_GRAIN_BYTES:
1349       case INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED:
1350         break;
1351       default:
1352         JVMCI_ERROR("invalid mark id: %d", id);
1353         break;
1354     }
1355   }
1356 }