1 /*
   2  * Copyright (c) 2011, 2025, 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 "classfile/classLoaderData.inline.hpp"
  25 #include "classfile/javaClasses.inline.hpp"
  26 #include "classfile/stringTable.hpp"
  27 #include "classfile/symbolTable.hpp"
  28 #include "classfile/systemDictionary.hpp"
  29 #include "classfile/vmClasses.hpp"
  30 #include "code/scopeDesc.hpp"
  31 #include "compiler/compileBroker.hpp"
  32 #include "compiler/compilerEvent.hpp"
  33 #include "compiler/compilerOracle.hpp"
  34 #include "compiler/disassembler.hpp"
  35 #include "compiler/oopMap.hpp"
  36 #include "interpreter/bytecodeStream.hpp"
  37 #include "interpreter/linkResolver.hpp"
  38 #include "interpreter/oopMapCache.hpp"
  39 #include "jfr/jfrEvents.hpp"
  40 #include "jvmci/jvmciCodeInstaller.hpp"
  41 #include "jvmci/jvmciCompilerToVM.hpp"
  42 #include "jvmci/jvmciRuntime.hpp"
  43 #include "logging/log.hpp"
  44 #include "logging/logTag.hpp"
  45 #include "memory/oopFactory.hpp"
  46 #include "memory/universe.hpp"
  47 #include "oops/constantPool.inline.hpp"
  48 #include "oops/instanceKlass.inline.hpp"
  49 #include "oops/instanceMirrorKlass.hpp"
  50 #include "oops/method.inline.hpp"
  51 #include "oops/objArrayKlass.inline.hpp"
  52 #include "oops/typeArrayOop.inline.hpp"
  53 #include "prims/jvmtiExport.hpp"
  54 #include "prims/methodHandles.hpp"
  55 #include "prims/nativeLookup.hpp"
  56 #include "runtime/arguments.hpp"
  57 #include "runtime/atomic.hpp"
  58 #include "runtime/deoptimization.hpp"
  59 #include "runtime/fieldDescriptor.inline.hpp"
  60 #include "runtime/frame.inline.hpp"
  61 #include "runtime/globals_extension.hpp"
  62 #include "runtime/interfaceSupport.inline.hpp"
  63 #include "runtime/jniHandles.inline.hpp"
  64 #include "runtime/keepStackGCProcessed.hpp"
  65 #include "runtime/reflection.hpp"
  66 #include "runtime/stackFrameStream.inline.hpp"
  67 #include "runtime/timerTrace.hpp"
  68 #include "runtime/vframe.inline.hpp"
  69 #include "runtime/vframe_hp.hpp"
  70 #if INCLUDE_JFR
  71 #include "jfr/jfr.hpp"
  72 #endif
  73 
  74 JVMCIKlassHandle::JVMCIKlassHandle(Thread* thread, Klass* klass) {
  75   _thread = thread;
  76   _klass = klass;
  77   if (klass != nullptr) {
  78     _holder = Handle(_thread, klass->klass_holder());
  79   }
  80 }
  81 
  82 JVMCIKlassHandle& JVMCIKlassHandle::operator=(Klass* klass) {
  83   _klass = klass;
  84   if (klass != nullptr) {
  85     _holder = Handle(_thread, klass->klass_holder());
  86   }
  87   return *this;
  88 }
  89 
  90 static void requireInHotSpot(const char* caller, JVMCI_TRAPS) {
  91   if (!JVMCIENV->is_hotspot()) {
  92     JVMCI_THROW_MSG(IllegalStateException, err_msg("Cannot call %s from JVMCI shared library", caller));
  93   }
  94 }
  95 
  96 static void requireNotInHotSpot(const char* caller, JVMCI_TRAPS) {
  97     if (JVMCIENV->is_hotspot()) {
  98         JVMCI_THROW_MSG(IllegalStateException, err_msg("Cannot call %s from HotSpot", caller));
  99     }
 100 }
 101 
 102 class JVMCITraceMark : public StackObj {
 103   const char* _msg;
 104  public:
 105   JVMCITraceMark(const char* msg) {
 106     _msg = msg;
 107     JVMCI_event_2("Enter %s", _msg);
 108   }
 109   ~JVMCITraceMark() {
 110     JVMCI_event_2(" Exit %s", _msg);
 111   }
 112 };
 113 
 114 class JavaArgumentUnboxer : public SignatureIterator {
 115  protected:
 116   JavaCallArguments*  _jca;
 117   arrayOop _args;
 118   int _index;
 119 
 120   Handle next_arg(BasicType expectedType);
 121 
 122  public:
 123   JavaArgumentUnboxer(Symbol* signature,
 124                       JavaCallArguments* jca,
 125                       arrayOop args,
 126                       bool is_static)
 127     : SignatureIterator(signature)
 128   {
 129     this->_return_type = T_ILLEGAL;
 130     _jca = jca;
 131     _index = 0;
 132     _args = args;
 133     if (!is_static) {
 134       _jca->push_oop(next_arg(T_OBJECT));
 135     }
 136     do_parameters_on(this);
 137     assert(_index == args->length(), "arg count mismatch with signature");
 138   }
 139 
 140  private:
 141   friend class SignatureIterator;  // so do_parameters_on can call do_type
 142   void do_type(BasicType type) {
 143     if (is_reference_type(type)) {
 144       _jca->push_oop(next_arg(T_OBJECT));
 145       return;
 146     }
 147     Handle arg = next_arg(type);
 148     int box_offset = java_lang_boxing_object::value_offset(type);
 149     switch (type) {
 150     case T_BOOLEAN:     _jca->push_int(arg->bool_field(box_offset));    break;
 151     case T_CHAR:        _jca->push_int(arg->char_field(box_offset));    break;
 152     case T_SHORT:       _jca->push_int(arg->short_field(box_offset));   break;
 153     case T_BYTE:        _jca->push_int(arg->byte_field(box_offset));    break;
 154     case T_INT:         _jca->push_int(arg->int_field(box_offset));     break;
 155     case T_LONG:        _jca->push_long(arg->long_field(box_offset));   break;
 156     case T_FLOAT:       _jca->push_float(arg->float_field(box_offset));    break;
 157     case T_DOUBLE:      _jca->push_double(arg->double_field(box_offset));  break;
 158     default:            ShouldNotReachHere();
 159     }
 160   }
 161 };
 162 
 163 Handle JavaArgumentUnboxer::next_arg(BasicType expectedType) {
 164   assert(_index < _args->length(), "out of bounds");
 165   oop arg=((objArrayOop) (_args))->obj_at(_index++);
 166   assert(expectedType == T_OBJECT || java_lang_boxing_object::is_instance(arg, expectedType), "arg type mismatch");
 167   return Handle(Thread::current(), arg);
 168 }
 169 
 170 // Bring the JVMCI compiler thread into the VM state.
 171 #define JVMCI_VM_ENTRY_MARK                                       \
 172   MACOS_AARCH64_ONLY(ThreadWXEnable __wx(WXWrite, thread));       \
 173   ThreadInVMfromNative __tiv(thread);                             \
 174   HandleMarkCleaner __hm(thread);                                 \
 175   JavaThread* THREAD = thread;                                    \
 176   debug_only(VMNativeEntryWrapper __vew;)
 177 
 178 // Native method block that transitions current thread to '_thread_in_vm'.
 179 // Note: CompilerThreadCanCallJava must precede JVMCIENV_FROM_JNI so that
 180 // the translation of an uncaught exception in the JVMCIEnv does not make
 181 // a Java call when __is_hotspot == false.
 182 #define C2V_BLOCK(result_type, name, signature)            \
 183   JVMCI_VM_ENTRY_MARK;                                     \
 184   ResourceMark rm;                                         \
 185   bool __is_hotspot = env == thread->jni_environment();    \
 186   bool __block_can_call_java = __is_hotspot || !thread->is_Compiler_thread() || CompilerThread::cast(thread)->can_call_java(); \
 187   CompilerThreadCanCallJava ccj(thread, __block_can_call_java); \
 188   JVMCIENV_FROM_JNI(JVMCI::compilation_tick(thread), env); \
 189 
 190 // Entry to native method implementation that transitions
 191 // current thread to '_thread_in_vm'.
 192 #define C2V_VMENTRY(result_type, name, signature)        \
 193   result_type JNICALL c2v_ ## name signature {           \
 194   JavaThread* thread = JavaThread::current_or_null();    \
 195   if (thread == nullptr) {                               \
 196     env->ThrowNew(JNIJVMCI::InternalError::clazz(),      \
 197         err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
 198     return;                                              \
 199   }                                                      \
 200   C2V_BLOCK(result_type, name, signature)                \
 201   JVMCITraceMark jtm("CompilerToVM::" #name);
 202 
 203 #define C2V_VMENTRY_(result_type, name, signature, result) \
 204   result_type JNICALL c2v_ ## name signature {           \
 205   JavaThread* thread = JavaThread::current_or_null();    \
 206   if (thread == nullptr) {                               \
 207     env->ThrowNew(JNIJVMCI::InternalError::clazz(),      \
 208         err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
 209     return result;                                       \
 210   }                                                      \
 211   C2V_BLOCK(result_type, name, signature)                \
 212   JVMCITraceMark jtm("CompilerToVM::" #name);
 213 
 214 #define C2V_VMENTRY_NULL(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, nullptr)
 215 #define C2V_VMENTRY_0(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, 0)
 216 
 217 // Entry to native method implementation that does not transition
 218 // current thread to '_thread_in_vm'.
 219 #define C2V_VMENTRY_PREFIX(result_type, name, signature) \
 220   result_type JNICALL c2v_ ## name signature {           \
 221   JavaThread* thread = JavaThread::current_or_null();
 222 
 223 #define C2V_END }
 224 
 225 #define JNI_THROW(caller, name, msg) do {                                         \
 226     jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg);               \
 227     if (__throw_res != JNI_OK) {                                                  \
 228       JVMCI_event_1("Throwing " #name " in " caller " returned %d", __throw_res); \
 229     }                                                                             \
 230     return;                                                                       \
 231   } while (0);
 232 
 233 #define JNI_THROW_(caller, name, msg, result) do {                                \
 234     jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg);               \
 235     if (__throw_res != JNI_OK) {                                                  \
 236       JVMCI_event_1("Throwing " #name " in " caller " returned %d", __throw_res); \
 237     }                                                                             \
 238     return result;                                                                \
 239   } while (0)
 240 
 241 jobjectArray readConfiguration0(JNIEnv *env, JVMCI_TRAPS);
 242 
 243 C2V_VMENTRY_NULL(jobjectArray, readConfiguration, (JNIEnv* env))
 244   jobjectArray config = readConfiguration0(env, JVMCI_CHECK_NULL);
 245   return config;
 246 }
 247 
 248 C2V_VMENTRY_NULL(jobject, getFlagValue, (JNIEnv* env, jobject c2vm, jobject name_handle))
 249 #define RETURN_BOXED_LONG(value) jvalue p; p.j = (jlong) (value); JVMCIObject box = JVMCIENV->create_box(T_LONG, &p, JVMCI_CHECK_NULL); return box.as_jobject();
 250 #define RETURN_BOXED_DOUBLE(value) jvalue p; p.d = (jdouble) (value); JVMCIObject box = JVMCIENV->create_box(T_DOUBLE, &p, JVMCI_CHECK_NULL); return box.as_jobject();
 251   JVMCIObject name = JVMCIENV->wrap(name_handle);
 252   if (name.is_null()) {
 253     JVMCI_THROW_NULL(NullPointerException);
 254   }
 255   const char* cstring = JVMCIENV->as_utf8_string(name);
 256   const JVMFlag* flag = JVMFlag::find_declared_flag(cstring);
 257   if (flag == nullptr) {
 258     return c2vm;
 259   }
 260   if (flag->is_bool()) {
 261     jvalue prim;
 262     prim.z = flag->get_bool();
 263     JVMCIObject box = JVMCIENV->create_box(T_BOOLEAN, &prim, JVMCI_CHECK_NULL);
 264     return JVMCIENV->get_jobject(box);
 265   } else if (flag->is_ccstr()) {
 266     JVMCIObject value = JVMCIENV->create_string(flag->get_ccstr(), JVMCI_CHECK_NULL);
 267     return JVMCIENV->get_jobject(value);
 268   } else if (flag->is_intx()) {
 269     RETURN_BOXED_LONG(flag->get_intx());
 270   } else if (flag->is_int()) {
 271     RETURN_BOXED_LONG(flag->get_int());
 272   } else if (flag->is_uint()) {
 273     RETURN_BOXED_LONG(flag->get_uint());
 274   } else if (flag->is_uint64_t()) {
 275     RETURN_BOXED_LONG(flag->get_uint64_t());
 276   } else if (flag->is_size_t()) {
 277     RETURN_BOXED_LONG(flag->get_size_t());
 278   } else if (flag->is_uintx()) {
 279     RETURN_BOXED_LONG(flag->get_uintx());
 280   } else if (flag->is_double()) {
 281     RETURN_BOXED_DOUBLE(flag->get_double());
 282   } else {
 283     JVMCI_ERROR_NULL("VM flag %s has unsupported type %s", flag->name(), flag->type_string());
 284   }
 285 #undef RETURN_BOXED_LONG
 286 #undef RETURN_BOXED_DOUBLE
 287 C2V_END
 288 
 289 // Macros for argument pairs representing a wrapper object and its wrapped VM pointer
 290 #define ARGUMENT_PAIR(name) jobject name ## _obj, jlong name ## _pointer
 291 #define UNPACK_PAIR(type, name) ((type*) name ## _pointer)
 292 
 293 C2V_VMENTRY_NULL(jbyteArray, getBytecode, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 294   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
 295 
 296   int code_size = method->code_size();
 297   jbyte* reconstituted_code = NEW_RESOURCE_ARRAY(jbyte, code_size);
 298 
 299   guarantee(method->method_holder()->is_rewritten(), "Method's holder should be rewritten");
 300   // iterate over all bytecodes and replace non-Java bytecodes
 301 
 302   for (BytecodeStream s(method); s.next() != Bytecodes::_illegal; ) {
 303     Bytecodes::Code code = s.code();
 304     Bytecodes::Code raw_code = s.raw_code();
 305     int bci = s.bci();
 306     int len = s.instruction_size();
 307 
 308     // Restore original byte code.
 309     reconstituted_code[bci] =  (jbyte) (s.is_wide()? Bytecodes::_wide : code);
 310     if (len > 1) {
 311       memcpy(reconstituted_code + (bci + 1), s.bcp()+1, len-1);
 312     }
 313 
 314     if (len > 1) {
 315       // Restore the big-endian constant pool indexes.
 316       // Cf. Rewriter::scan_method
 317       switch (code) {
 318         case Bytecodes::_getstatic:
 319         case Bytecodes::_putstatic:
 320         case Bytecodes::_getfield:
 321         case Bytecodes::_putfield:
 322         case Bytecodes::_invokevirtual:
 323         case Bytecodes::_invokespecial:
 324         case Bytecodes::_invokestatic:
 325         case Bytecodes::_invokeinterface:
 326         case Bytecodes::_invokehandle: {
 327           int cp_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
 328           Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
 329           break;
 330         }
 331 
 332         case Bytecodes::_invokedynamic: {
 333           int cp_index = Bytes::get_native_u4((address) reconstituted_code + (bci + 1));
 334           Bytes::put_Java_u4((address) reconstituted_code + (bci + 1), (u4) cp_index);
 335           break;
 336         }
 337 
 338         default:
 339           break;
 340       }
 341 
 342       // Not all ldc byte code are rewritten.
 343       switch (raw_code) {
 344         case Bytecodes::_fast_aldc: {
 345           int cpc_index = reconstituted_code[bci + 1] & 0xff;
 346           int cp_index = method->constants()->object_to_cp_index(cpc_index);
 347           assert(cp_index < method->constants()->length(), "sanity check");
 348           reconstituted_code[bci + 1] = (jbyte) cp_index;
 349           break;
 350         }
 351 
 352         case Bytecodes::_fast_aldc_w: {
 353           int cpc_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
 354           int cp_index = method->constants()->object_to_cp_index(cpc_index);
 355           assert(cp_index < method->constants()->length(), "sanity check");
 356           Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
 357           break;
 358         }
 359 
 360         default:
 361           break;
 362       }
 363     }
 364   }
 365 
 366   JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL);
 367   JVMCIENV->copy_bytes_from(reconstituted_code, result, 0, code_size);
 368   return JVMCIENV->get_jbyteArray(result);
 369 C2V_END
 370 
 371 C2V_VMENTRY_0(jint, getExceptionTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 372   Method* method = UNPACK_PAIR(Method, method);
 373   return method->exception_table_length();
 374 C2V_END
 375 
 376 C2V_VMENTRY_0(jlong, getExceptionTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 377   Method* method = UNPACK_PAIR(Method, method);
 378   if (method->exception_table_length() == 0) {
 379     return 0L;
 380   }
 381   return (jlong) (address) method->exception_table_start();
 382 C2V_END
 383 
 384 C2V_VMENTRY_NULL(jobject, asResolvedJavaMethod, (JNIEnv* env, jobject, jobject executable_handle))
 385   requireInHotSpot("asResolvedJavaMethod", JVMCI_CHECK_NULL);
 386   oop executable = JNIHandles::resolve(executable_handle);
 387   oop mirror = nullptr;
 388   int slot = 0;
 389 
 390   if (executable->klass() == vmClasses::reflect_Constructor_klass()) {
 391     mirror = java_lang_reflect_Constructor::clazz(executable);
 392     slot = java_lang_reflect_Constructor::slot(executable);
 393   } else {
 394     assert(executable->klass() == vmClasses::reflect_Method_klass(), "wrong type");
 395     mirror = java_lang_reflect_Method::clazz(executable);
 396     slot = java_lang_reflect_Method::slot(executable);
 397   }
 398   Klass* holder = java_lang_Class::as_Klass(mirror);
 399   methodHandle method (THREAD, InstanceKlass::cast(holder)->method_with_idnum(slot));
 400   JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
 401   return JVMCIENV->get_jobject(result);
 402 }
 403 
 404 C2V_VMENTRY_PREFIX(jboolean, updateCompilerThreadCanCallJava, (JNIEnv* env, jobject, jboolean newState))
 405   return CompilerThreadCanCallJava::update(thread, newState) != nullptr;
 406 C2V_END
 407 
 408 
 409 C2V_VMENTRY_NULL(jobject, getResolvedJavaMethod, (JNIEnv* env, jobject, jobject base, jlong offset))
 410   Method* method = nullptr;
 411   JVMCIObject base_object = JVMCIENV->wrap(base);
 412   if (base_object.is_null()) {
 413     method = *((Method**)(offset));
 414   } else {
 415     Handle obj = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
 416     if (obj->is_a(vmClasses::ResolvedMethodName_klass())) {
 417       method = (Method*) (intptr_t) obj->long_field(offset);
 418     } else {
 419       JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", obj->klass()->external_name()));
 420     }
 421   }
 422   if (method == nullptr) {
 423     JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", JVMCIENV->klass_name(base_object)));
 424   }
 425   assert (method->is_method(), "invalid read");
 426   JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, method), JVMCI_CHECK_NULL);
 427   return JVMCIENV->get_jobject(result);
 428 }
 429 
 430 C2V_VMENTRY_NULL(jobject, getConstantPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass_or_method), jboolean is_klass))
 431   ConstantPool* cp = nullptr;
 432   if (UNPACK_PAIR(address, klass_or_method) == nullptr) {
 433     JVMCI_THROW_NULL(NullPointerException);
 434   }
 435   if (!is_klass) {
 436     cp = (UNPACK_PAIR(Method, klass_or_method))->constMethod()->constants();
 437   } else {
 438     cp = InstanceKlass::cast(UNPACK_PAIR(Klass, klass_or_method))->constants();
 439   }
 440 
 441   JVMCIObject result = JVMCIENV->get_jvmci_constant_pool(constantPoolHandle(THREAD, cp), JVMCI_CHECK_NULL);
 442   return JVMCIENV->get_jobject(result);
 443 }
 444 
 445 C2V_VMENTRY_NULL(jobject, getResolvedJavaType0, (JNIEnv* env, jobject, jobject base, jlong offset, jboolean compressed))
 446   JVMCIObject base_object = JVMCIENV->wrap(base);
 447   if (base_object.is_null()) {
 448     JVMCI_THROW_MSG_NULL(NullPointerException, "base object is null");
 449   }
 450 
 451   const char* base_desc = nullptr;
 452   JVMCIKlassHandle klass(THREAD);
 453   if (offset == 1 /*oopDesc::klass_offset_in_bytes()*/) {
 454     if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
 455       Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
 456       klass = base_oop->klass();
 457     } else {
 458       goto unexpected;
 459     }
 460   } else if (!compressed) {
 461     if (JVMCIENV->isa_HotSpotConstantPool(base_object)) {
 462       ConstantPool* cp = JVMCIENV->asConstantPool(base_object);
 463       if (offset == in_bytes(ConstantPool::pool_holder_offset())) {
 464         klass = cp->pool_holder();
 465       } else {
 466         base_desc = FormatBufferResource("[constant pool for %s]", cp->pool_holder()->signature_name());
 467         goto unexpected;
 468       }
 469     } else if (JVMCIENV->isa_HotSpotResolvedObjectTypeImpl(base_object)) {
 470       Klass* base_klass = JVMCIENV->asKlass(base_object);
 471       if (offset == in_bytes(Klass::subklass_offset())) {
 472         klass = base_klass->subklass();
 473       } else if (offset == in_bytes(Klass::super_offset())) {
 474         klass = base_klass->super();
 475       } else if (offset == in_bytes(Klass::next_sibling_offset())) {
 476         klass = base_klass->next_sibling();
 477       } else if (offset == in_bytes(ObjArrayKlass::element_klass_offset()) && base_klass->is_objArray_klass()) {
 478         klass = ObjArrayKlass::cast(base_klass)->element_klass();
 479       } else if (offset >= in_bytes(Klass::primary_supers_offset()) &&
 480                  offset < in_bytes(Klass::primary_supers_offset()) + (int) (sizeof(Klass*) * Klass::primary_super_limit()) &&
 481                  offset % sizeof(Klass*) == 0) {
 482         // Offset is within the primary supers array
 483         int index = (int) ((offset - in_bytes(Klass::primary_supers_offset())) / sizeof(Klass*));
 484         klass = base_klass->primary_super_of_depth(index);
 485       } else {
 486         base_desc = FormatBufferResource("[%s]", base_klass->signature_name());
 487         goto unexpected;
 488       }
 489     } else if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
 490       Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
 491       if (base_oop->is_a(vmClasses::Class_klass())) {
 492         if (offset == java_lang_Class::klass_offset()) {
 493           klass = java_lang_Class::as_Klass(base_oop());
 494         } else if (offset == java_lang_Class::array_klass_offset()) {
 495           klass = java_lang_Class::array_klass_acquire(base_oop());
 496         } else {
 497           base_desc = FormatBufferResource("[Class=%s]", java_lang_Class::as_Klass(base_oop())->signature_name());
 498           goto unexpected;
 499         }
 500       } else {
 501         if (!base_oop.is_null()) {
 502           base_desc = FormatBufferResource("[%s]", base_oop()->klass()->signature_name());
 503         }
 504         goto unexpected;
 505       }
 506     } else if (JVMCIENV->isa_HotSpotMethodData(base_object)) {
 507       jlong base_address = (intptr_t) JVMCIENV->asMethodData(base_object);
 508       klass = *((Klass**) (intptr_t) (base_address + offset));
 509       if (klass == nullptr || !klass->is_loader_alive()) {
 510         // Klasses in methodData might be concurrently unloading so return null in that case.
 511         return nullptr;
 512       }
 513     } else {
 514       goto unexpected;
 515     }
 516   } else {
 517     goto unexpected;
 518   }
 519 
 520   {
 521     if (klass == nullptr) {
 522       return nullptr;
 523     }
 524     JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
 525     return JVMCIENV->get_jobject(result);
 526   }
 527 
 528 unexpected:
 529   JVMCI_THROW_MSG_NULL(IllegalArgumentException,
 530                        err_msg("Unexpected arguments: %s%s " JLONG_FORMAT " %s",
 531                                JVMCIENV->klass_name(base_object), base_desc == nullptr ? "" : base_desc,
 532                                offset, compressed ? "true" : "false"));
 533 }
 534 
 535 C2V_VMENTRY_NULL(jobject, findUniqueConcreteMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
 536   methodHandle method (THREAD, UNPACK_PAIR(Method, method));
 537   InstanceKlass* holder = InstanceKlass::cast(UNPACK_PAIR(Klass, klass));
 538   if (holder->is_interface()) {
 539     JVMCI_THROW_MSG_NULL(InternalError, err_msg("Interface %s should be handled in Java code", holder->external_name()));
 540   }
 541   if (method->can_be_statically_bound()) {
 542     JVMCI_THROW_MSG_NULL(InternalError, err_msg("Effectively static method %s.%s should be handled in Java code", method->method_holder()->external_name(), method->external_name()));
 543   }
 544 
 545   methodHandle ucm;
 546   {
 547     MutexLocker locker(Compile_lock);
 548     ucm = methodHandle(THREAD, Dependencies::find_unique_concrete_method(holder, method()));
 549   }
 550   JVMCIObject result = JVMCIENV->get_jvmci_method(ucm, JVMCI_CHECK_NULL);
 551   return JVMCIENV->get_jobject(result);
 552 C2V_END
 553 
 554 C2V_VMENTRY_NULL(jobject, getImplementor, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
 555   Klass* klass = UNPACK_PAIR(Klass, klass);
 556   if (!klass->is_interface()) {
 557     THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(),
 558                    err_msg("Expected interface type, got %s", klass->external_name()));
 559   }
 560   InstanceKlass* iklass = InstanceKlass::cast(klass);
 561   JVMCIKlassHandle handle(THREAD, iklass->implementor());
 562   JVMCIObject implementor = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
 563   return JVMCIENV->get_jobject(implementor);
 564 C2V_END
 565 
 566 C2V_VMENTRY_0(jboolean, methodIsIgnoredBySecurityStackWalk,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 567   Method* method = UNPACK_PAIR(Method, method);
 568   return method->is_ignored_by_security_stack_walk();
 569 C2V_END
 570 
 571 C2V_VMENTRY_0(jboolean, isCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 572   Method* method = UNPACK_PAIR(Method, method);
 573   // Skip redefined methods
 574   if (method->is_old()) {
 575     return false;
 576   }
 577   return !method->is_not_compilable(CompLevel_full_optimization);
 578 C2V_END
 579 
 580 C2V_VMENTRY_0(jboolean, hasNeverInlineDirective,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 581   methodHandle method (THREAD, UNPACK_PAIR(Method, method));
 582   return !Inline || CompilerOracle::should_not_inline(method) || method->dont_inline();
 583 C2V_END
 584 
 585 C2V_VMENTRY_0(jboolean, shouldInlineMethod,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 586   methodHandle method (THREAD, UNPACK_PAIR(Method, method));
 587   return CompilerOracle::should_inline(method) || method->force_inline();
 588 C2V_END
 589 
 590 C2V_VMENTRY_NULL(jobject, lookupType, (JNIEnv* env, jobject, jstring jname, ARGUMENT_PAIR(accessing_klass), jint accessing_klass_loader, jboolean resolve))
 591   CompilerThreadCanCallJava canCallJava(thread, resolve); // Resolution requires Java calls
 592   JVMCIObject name = JVMCIENV->wrap(jname);
 593   const char* str = JVMCIENV->as_utf8_string(name);
 594   TempNewSymbol class_name = SymbolTable::new_symbol(str);
 595 
 596   if (class_name->utf8_length() <= 1) {
 597     JVMCI_THROW_MSG_NULL(InternalError, err_msg("Primitive type %s should be handled in Java code", str));
 598   }
 599 
 600 #ifdef ASSERT
 601   const char* val = Arguments::PropertyList_get_value(Arguments::system_properties(), "test.jvmci.lookupTypeException");
 602   if (val != nullptr) {
 603     if (strstr(val, "<trace>") != nullptr) {
 604       tty->print_cr("CompilerToVM.lookupType: %s", str);
 605     } else if (strstr(str, val) != nullptr) {
 606       THROW_MSG_NULL(vmSymbols::java_lang_Exception(),
 607                      err_msg("lookupTypeException: %s", str));
 608     }
 609   }
 610 #endif
 611 
 612   JVMCIKlassHandle resolved_klass(THREAD);
 613   Klass* accessing_klass = UNPACK_PAIR(Klass, accessing_klass);
 614   Handle class_loader;
 615   if (accessing_klass != nullptr) {
 616     class_loader = Handle(THREAD, accessing_klass->class_loader());
 617   } else {
 618     switch (accessing_klass_loader) {
 619       case 0: break; // class_loader is already null, the boot loader
 620       case 1: class_loader = Handle(THREAD, SystemDictionary::java_platform_loader()); break;
 621       case 2: class_loader = Handle(THREAD, SystemDictionary::java_system_loader()); break;
 622       default:
 623         JVMCI_THROW_MSG_NULL(InternalError, err_msg("Illegal class loader value: %d", accessing_klass_loader));
 624     }
 625     JVMCIENV->runtime()->initialize(JVMCI_CHECK_NULL);
 626   }
 627 
 628   if (resolve) {
 629     resolved_klass = SystemDictionary::resolve_or_fail(class_name, class_loader, true, CHECK_NULL);
 630   } else {
 631     if (Signature::has_envelope(class_name)) {
 632       // This is a name from a signature.  Strip off the trimmings.
 633       // Call recursive to keep scope of strippedsym.
 634       TempNewSymbol strippedsym = Signature::strip_envelope(class_name);
 635       resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
 636                                                              class_loader);
 637     } else if (Signature::is_array(class_name)) {
 638       SignatureStream ss(class_name, false);
 639       int ndim = ss.skip_array_prefix();
 640       if (ss.type() == T_OBJECT) {
 641         Symbol* strippedsym = ss.as_symbol();
 642         resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
 643                                                                class_loader);
 644         if (!resolved_klass.is_null()) {
 645           resolved_klass = resolved_klass->array_klass(ndim, CHECK_NULL);
 646         }
 647       } else {
 648         resolved_klass = Universe::typeArrayKlass(ss.type())->array_klass(ndim, CHECK_NULL);
 649       }
 650     } else {
 651       resolved_klass = SystemDictionary::find_instance_klass(THREAD, class_name,
 652                                                              class_loader);
 653     }
 654   }
 655   JVMCIObject result = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
 656   return JVMCIENV->get_jobject(result);
 657 C2V_END
 658 
 659 C2V_VMENTRY_NULL(jobject, getArrayType, (JNIEnv* env, jobject, jchar type_char, ARGUMENT_PAIR(klass)))
 660   JVMCIKlassHandle array_klass(THREAD);
 661   Klass* klass = UNPACK_PAIR(Klass, klass);
 662   if (klass == nullptr) {
 663     BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_NULL);
 664     if (type == T_VOID) {
 665       return nullptr;
 666     }
 667     array_klass = Universe::typeArrayKlass(type);
 668     if (array_klass == nullptr) {
 669       JVMCI_THROW_MSG_NULL(InternalError, err_msg("No array klass for primitive type %s", type2name(type)));
 670     }
 671   } else {
 672     array_klass = klass->array_klass(CHECK_NULL);
 673   }
 674   JVMCIObject result = JVMCIENV->get_jvmci_type(array_klass, JVMCI_CHECK_NULL);
 675   return JVMCIENV->get_jobject(result);
 676 C2V_END
 677 
 678 C2V_VMENTRY_NULL(jobject, lookupClass, (JNIEnv* env, jobject, jclass mirror))
 679   requireInHotSpot("lookupClass", JVMCI_CHECK_NULL);
 680   if (mirror == nullptr) {
 681     return nullptr;
 682   }
 683   JVMCIKlassHandle klass(THREAD);
 684   klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
 685   if (klass == nullptr) {
 686     JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Primitive classes are unsupported");
 687   }
 688   JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
 689   return JVMCIENV->get_jobject(result);
 690 C2V_END
 691 
 692 C2V_VMENTRY_NULL(jobject, lookupJClass, (JNIEnv* env, jobject, jlong jclass_value))
 693     if (jclass_value == 0L) {
 694         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass must not be zero");
 695     }
 696     jclass mirror = reinterpret_cast<jclass>(jclass_value);
 697     // Since the jclass_value is passed as a jlong, we perform additional checks to prevent the caller from accidentally
 698     // sending a value that is not a JNI handle.
 699     if (JNIHandles::handle_type(thread, mirror) == JNIInvalidRefType) {
 700         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass is not a valid JNI reference");
 701     }
 702     oop obj = JNIHandles::resolve(mirror);
 703     if (!java_lang_Class::is_instance(obj)) {
 704         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass must be a reference to the Class object");
 705     }
 706     JVMCIKlassHandle klass(THREAD, java_lang_Class::as_Klass(obj));
 707     JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
 708     return JVMCIENV->get_jobject(result);
 709 C2V_END
 710 
 711 C2V_VMENTRY_0(jlong, getJObjectValue, (JNIEnv* env, jobject, jobject constant_jobject))
 712     requireNotInHotSpot("getJObjectValue", JVMCI_CHECK_0);
 713     // Ensure that current JNI handle scope is not the top-most JNIHandleBlock as handles
 714     // in that scope are only released when the thread exits.
 715     if (!THREAD->has_last_Java_frame() && THREAD->active_handles()->pop_frame_link() == nullptr) {
 716         JVMCI_THROW_MSG_0(IllegalStateException, err_msg("Cannot call getJObjectValue without Java frame anchor or a pushed JNI handle block"));
 717     }
 718     JVMCIObject constant = JVMCIENV->wrap(constant_jobject);
 719     Handle constant_value = JVMCIENV->asConstant(constant, JVMCI_CHECK_0);
 720     jobject jni_handle = JNIHandles::make_local(THREAD, constant_value());
 721     return reinterpret_cast<jlong>(jni_handle);
 722 C2V_END
 723 
 724 C2V_VMENTRY_NULL(jobject, getUncachedStringInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 725   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 726   constantTag tag = cp->tag_at(index);
 727   if (!tag.is_string()) {
 728     JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
 729   }
 730   oop obj = cp->uncached_string_at(index, CHECK_NULL);
 731   return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
 732 C2V_END
 733 
 734 C2V_VMENTRY_NULL(jobject, lookupConstantInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint cp_index, bool resolve))
 735   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 736   oop obj;
 737   if (!resolve) {
 738     bool found_it;
 739     obj = cp->find_cached_constant_at(cp_index, found_it, CHECK_NULL);
 740     if (!found_it) {
 741       return nullptr;
 742     }
 743   } else {
 744     obj = cp->resolve_possibly_cached_constant_at(cp_index, CHECK_NULL);
 745   }
 746   constantTag tag = cp->tag_at(cp_index);
 747   if (tag.is_dynamic_constant()) {
 748     if (obj == nullptr) {
 749       return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
 750     }
 751     BasicType bt = Signature::basic_type(cp->uncached_signature_ref_at(cp_index));
 752     if (!is_reference_type(bt)) {
 753       if (!is_java_primitive(bt)) {
 754         return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
 755       }
 756 
 757       // Convert standard box (e.g. java.lang.Integer) to JVMCI box (e.g. jdk.vm.ci.meta.PrimitiveConstant)
 758       jvalue value;
 759       jlong raw_value;
 760       jchar type_char;
 761       BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
 762       assert(bt2 == bt, "");
 763       switch (bt2) {
 764         case T_LONG:    type_char = 'J'; raw_value = value.j; break;
 765         case T_DOUBLE:  type_char = 'D'; raw_value = value.j; break;
 766         case T_FLOAT:   type_char = 'F'; raw_value = value.i; break;
 767         case T_INT:     type_char = 'I'; raw_value = value.i; break;
 768         case T_SHORT:   type_char = 'S'; raw_value = value.s; break;
 769         case T_BYTE:    type_char = 'B'; raw_value = value.b; break;
 770         case T_CHAR:    type_char = 'C'; raw_value = value.c; break;
 771         case T_BOOLEAN: type_char = 'Z'; raw_value = value.z; break;
 772         default:        return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
 773       }
 774 
 775       JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, raw_value, JVMCI_CHECK_NULL);
 776       return JVMCIENV->get_jobject(result);
 777     }
 778   }
 779 #ifdef ASSERT
 780   // Support for testing an OOME raised in a context where the current thread cannot call Java
 781   // 1. Put -Dtest.jvmci.oome_in_lookupConstantInPool=<trace> on the command line to
 782   //    discover possible values for step 2.
 783   //    Example output:
 784   //
 785   //      CompilerToVM.lookupConstantInPool: "Overflow: String length out of range"{0x00000007ffeb2960}
 786   //      CompilerToVM.lookupConstantInPool: "null"{0x00000007ffebdfe8}
 787   //      CompilerToVM.lookupConstantInPool: "Maximum lock count exceeded"{0x00000007ffec4f90}
 788   //      CompilerToVM.lookupConstantInPool: "Negative length"{0x00000007ffec4468}
 789   //
 790   // 2. Choose a value shown in step 1.
 791   //    Example: -Dtest.jvmci.oome_in_lookupConstantInPool=Negative
 792   const char* val = Arguments::PropertyList_get_value(Arguments::system_properties(), "test.jvmci.oome_in_lookupConstantInPool");
 793   if (val != nullptr) {
 794     const char* str = obj->print_value_string();
 795     if (strstr(val, "<trace>") != nullptr) {
 796       tty->print_cr("CompilerToVM.lookupConstantInPool: %s", str);
 797     } else if (strstr(str, val) != nullptr) {
 798       Handle garbage;
 799       while (true) {
 800         // Trigger an OutOfMemoryError
 801         objArrayOop next = oopFactory::new_objectArray(0x7FFFFFFF, CHECK_NULL);
 802         next->obj_at_put(0, garbage());
 803         garbage = Handle(THREAD, next);
 804       }
 805     }
 806   }
 807 #endif
 808   return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
 809 C2V_END
 810 
 811 C2V_VMENTRY_NULL(jobjectArray, resolveBootstrapMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 812   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 813   constantTag tag = cp->tag_at(index);
 814   bool is_indy = tag.is_invoke_dynamic();
 815   bool is_condy = tag.is_dynamic_constant();
 816   if (!(is_condy || is_indy)) {
 817     JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
 818   }
 819   // Get the indy entry based on CP index
 820   int indy_index = -1;
 821   if (is_indy) {
 822     for (int i = 0; i < cp->resolved_indy_entries_length(); i++) {
 823       if (cp->resolved_indy_entry_at(i)->constant_pool_index() == index) {
 824         indy_index = i;
 825       }
 826     }
 827   }
 828   // Resolve the bootstrap specifier, its name, type, and static arguments
 829   BootstrapInfo bootstrap_specifier(cp, index, indy_index);
 830   Handle bsm = bootstrap_specifier.resolve_bsm(CHECK_NULL);
 831 
 832   // call java.lang.invoke.MethodHandle::asFixedArity() -> MethodHandle
 833   // to get a DirectMethodHandle from which we can then extract a Method*
 834   JavaValue result(T_OBJECT);
 835   JavaCalls::call_virtual(&result,
 836                          bsm,
 837                          vmClasses::MethodHandle_klass(),
 838                          vmSymbols::asFixedArity_name(),
 839                          vmSymbols::asFixedArity_signature(),
 840                          CHECK_NULL);
 841   bsm = Handle(THREAD, result.get_oop());
 842 
 843   // Check assumption about getting a DirectMethodHandle
 844   if (!java_lang_invoke_DirectMethodHandle::is_instance(bsm())) {
 845     JVMCI_THROW_MSG_NULL(InternalError, err_msg("Unexpected MethodHandle subclass: %s", bsm->klass()->external_name()));
 846   }
 847   // Create return array describing the bootstrap method invocation (BSMI)
 848   JVMCIObjectArray bsmi = JVMCIENV->new_Object_array(4, JVMCI_CHECK_NULL);
 849 
 850   // Extract Method* and wrap it in a ResolvedJavaMethod
 851   Handle member = Handle(THREAD, java_lang_invoke_DirectMethodHandle::member(bsm()));
 852   JVMCIObject bsmi_method = JVMCIENV->get_jvmci_method(methodHandle(THREAD, java_lang_invoke_MemberName::vmtarget(member())), JVMCI_CHECK_NULL);
 853   JVMCIENV->put_object_at(bsmi, 0, bsmi_method);
 854 
 855   JVMCIObject bsmi_name = JVMCIENV->create_string(bootstrap_specifier.name(), JVMCI_CHECK_NULL);
 856   JVMCIENV->put_object_at(bsmi, 1, bsmi_name);
 857 
 858   Handle type_arg = bootstrap_specifier.type_arg();
 859   JVMCIObject bsmi_type = JVMCIENV->get_object_constant(type_arg());
 860   JVMCIENV->put_object_at(bsmi, 2, bsmi_type);
 861 
 862   Handle arg_values = bootstrap_specifier.arg_values();
 863   if (arg_values.not_null()) {
 864     if (!arg_values->is_array()) {
 865       JVMCIENV->put_object_at(bsmi, 3, JVMCIENV->get_object_constant(arg_values()));
 866     } else if (arg_values->is_objArray()) {
 867       objArrayHandle args_array = objArrayHandle(THREAD, (objArrayOop) arg_values());
 868       int len = args_array->length();
 869       JVMCIObjectArray arguments = JVMCIENV->new_JavaConstant_array(len, JVMCI_CHECK_NULL);
 870       JVMCIENV->put_object_at(bsmi, 3, arguments);
 871       for (int i = 0; i < len; i++) {
 872         oop x = args_array->obj_at(i);
 873         if (x != nullptr) {
 874           JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_object_constant(x));
 875         } else {
 876           JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_JavaConstant_NULL_POINTER());
 877         }
 878       }
 879     } else if (arg_values->is_typeArray()) {
 880       typeArrayHandle bsci = typeArrayHandle(THREAD, (typeArrayOop) arg_values());
 881       JVMCIPrimitiveArray arguments = JVMCIENV->new_intArray(bsci->length(), JVMCI_CHECK_NULL);
 882       JVMCIENV->put_object_at(bsmi, 3, arguments);
 883       for (int i = 0; i < bsci->length(); i++) {
 884         JVMCIENV->put_int_at(arguments, i, bsci->int_at(i));
 885       }
 886     }
 887   }
 888   return JVMCIENV->get_jobjectArray(bsmi);
 889 C2V_END
 890 
 891 C2V_VMENTRY_0(jint, bootstrapArgumentIndexAt, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint cpi, jint index))
 892   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 893   return cp->bootstrap_argument_index_at(cpi, index);
 894 C2V_END
 895 
 896 C2V_VMENTRY_0(jint, lookupNameAndTypeRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode))
 897   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 898   return cp->name_and_type_ref_index_at(index, (Bytecodes::Code)opcode);
 899 C2V_END
 900 
 901 C2V_VMENTRY_NULL(jobject, lookupNameInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode))
 902   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 903   JVMCIObject sym = JVMCIENV->create_string(cp->name_ref_at(which, (Bytecodes::Code)opcode), JVMCI_CHECK_NULL);
 904   return JVMCIENV->get_jobject(sym);
 905 C2V_END
 906 
 907 C2V_VMENTRY_NULL(jobject, lookupSignatureInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode))
 908   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 909   JVMCIObject sym = JVMCIENV->create_string(cp->signature_ref_at(which, (Bytecodes::Code)opcode), JVMCI_CHECK_NULL);
 910   return JVMCIENV->get_jobject(sym);
 911 C2V_END
 912 
 913 C2V_VMENTRY_0(jint, lookupKlassRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode))
 914   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 915   return cp->klass_ref_index_at(index, (Bytecodes::Code)opcode);
 916 C2V_END
 917 
 918 C2V_VMENTRY_NULL(jobject, resolveTypeInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 919   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 920   Klass* klass = cp->klass_at(index, CHECK_NULL);
 921   JVMCIKlassHandle resolved_klass(THREAD, klass);
 922   if (resolved_klass->is_instance_klass()) {
 923     InstanceKlass::cast(resolved_klass())->link_class(CHECK_NULL);
 924     if (!InstanceKlass::cast(resolved_klass())->is_linked()) {
 925       // link_class() should not return here if there is an issue.
 926       JVMCI_THROW_MSG_NULL(InternalError, err_msg("Class %s must be linked", resolved_klass()->external_name()));
 927     }
 928   }
 929   JVMCIObject klassObject = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
 930   return JVMCIENV->get_jobject(klassObject);
 931 C2V_END
 932 
 933 C2V_VMENTRY_NULL(jobject, lookupKlassInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 934   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 935   Klass* loading_klass = cp->pool_holder();
 936   bool is_accessible = false;
 937   JVMCIKlassHandle klass(THREAD, JVMCIRuntime::get_klass_by_index(cp, index, is_accessible, loading_klass));
 938   Symbol* symbol = nullptr;
 939   if (klass.is_null()) {
 940     constantTag tag = cp->tag_at(index);
 941     if (tag.is_klass()) {
 942       // The klass has been inserted into the constant pool
 943       // very recently.
 944       klass = cp->resolved_klass_at(index);
 945     } else if (tag.is_symbol()) {
 946       symbol = cp->symbol_at(index);
 947     } else {
 948       if (!tag.is_unresolved_klass()) {
 949         JVMCI_THROW_MSG_NULL(InternalError, err_msg("Expected %d at index %d, got %d", JVM_CONSTANT_UnresolvedClassInError, index, tag.value()));
 950       }
 951       symbol = cp->klass_name_at(index);
 952     }
 953   }
 954   JVMCIObject result;
 955   if (!klass.is_null()) {
 956     result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
 957   } else {
 958     result = JVMCIENV->create_string(symbol, JVMCI_CHECK_NULL);
 959   }
 960   return JVMCIENV->get_jobject(result);
 961 C2V_END
 962 
 963 C2V_VMENTRY_NULL(jobject, lookupAppendixInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode))
 964   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 965   oop appendix_oop = ConstantPool::appendix_at_if_loaded(cp, which, Bytecodes::Code(opcode));
 966   return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(appendix_oop));
 967 C2V_END
 968 
 969 C2V_VMENTRY_NULL(jobject, lookupMethodInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jbyte opcode, ARGUMENT_PAIR(caller)))
 970   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 971   methodHandle caller(THREAD, UNPACK_PAIR(Method, caller));
 972   InstanceKlass* pool_holder = cp->pool_holder();
 973   Bytecodes::Code bc = (Bytecodes::Code) (((int) opcode) & 0xFF);
 974   methodHandle method(THREAD, JVMCIRuntime::get_method_by_index(cp, index, bc, pool_holder));
 975   JFR_ONLY(if (method.not_null()) Jfr::on_resolution(caller(), method(), CHECK_NULL);)
 976   JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
 977   return JVMCIENV->get_jobject(result);
 978 C2V_END
 979 
 980 C2V_VMENTRY_NULL(jobject, resolveFieldInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, ARGUMENT_PAIR(method), jbyte opcode, jintArray info_handle))
 981   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 982   Bytecodes::Code code = (Bytecodes::Code)(((int) opcode) & 0xFF);
 983   fieldDescriptor fd;
 984   methodHandle mh(THREAD, UNPACK_PAIR(Method, method));
 985 
 986   Bytecodes::Code bc = (Bytecodes::Code) (((int) opcode) & 0xFF);
 987   int holder_index = cp->klass_ref_index_at(index, bc);
 988   if (!cp->tag_at(holder_index).is_klass() && !THREAD->can_call_java()) {
 989     // If the holder is not resolved in the constant pool and the current
 990     // thread cannot call Java, return null. This avoids a Java call
 991     // in LinkInfo to load the holder.
 992     Symbol* klass_name = cp->klass_ref_at_noresolve(index, bc);
 993     return nullptr;
 994   }
 995 
 996   LinkInfo link_info(cp, index, mh, code, CHECK_NULL);
 997   LinkResolver::resolve_field(fd, link_info, Bytecodes::java_code(code), false, CHECK_NULL);
 998   JVMCIPrimitiveArray info = JVMCIENV->wrap(info_handle);
 999   if (info.is_null() || JVMCIENV->get_length(info) != 4) {
1000     JVMCI_ERROR_NULL("info must not be null and have a length of 4");
1001   }
1002   JVMCIENV->put_int_at(info, 0, fd.access_flags().as_field_flags());
1003   JVMCIENV->put_int_at(info, 1, fd.offset());
1004   JVMCIENV->put_int_at(info, 2, fd.index());
1005   JVMCIENV->put_int_at(info, 3, fd.field_flags().as_uint());
1006   JVMCIKlassHandle handle(THREAD, fd.field_holder());
1007   JVMCIObject field_holder = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
1008   return JVMCIENV->get_jobject(field_holder);
1009 C2V_END
1010 
1011 C2V_VMENTRY_0(jint, getVtableIndexForInterfaceMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
1012   Klass* klass = UNPACK_PAIR(Klass, klass);
1013   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1014   InstanceKlass* holder = method->method_holder();
1015   if (klass->is_interface()) {
1016     JVMCI_THROW_MSG_0(InternalError, err_msg("Interface %s should be handled in Java code", klass->external_name()));
1017   }
1018   if (!holder->is_interface()) {
1019     JVMCI_THROW_MSG_0(InternalError, err_msg("Method %s is not held by an interface, this case should be handled in Java code", method->name_and_sig_as_C_string()));
1020   }
1021   if (!klass->is_instance_klass()) {
1022     JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be instance klass", klass->external_name()));
1023   }
1024   if (!InstanceKlass::cast(klass)->is_linked()) {
1025     JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be linked", klass->external_name()));
1026   }
1027   if (!klass->is_subtype_of(holder)) {
1028     JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s does not implement interface %s", klass->external_name(), holder->external_name()));
1029   }
1030   return LinkResolver::vtable_index_of_interface_method(klass, method);
1031 C2V_END
1032 
1033 C2V_VMENTRY_NULL(jobject, resolveMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(receiver), ARGUMENT_PAIR(method), ARGUMENT_PAIR(caller)))
1034   Klass* recv_klass = UNPACK_PAIR(Klass, receiver);
1035   Klass* caller_klass = UNPACK_PAIR(Klass, caller);
1036   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1037 
1038   Klass* resolved     = method->method_holder();
1039   Symbol* h_name      = method->name();
1040   Symbol* h_signature = method->signature();
1041 
1042   if (MethodHandles::is_signature_polymorphic_method(method())) {
1043       // Signature polymorphic methods are already resolved, JVMCI just returns null in this case.
1044       return nullptr;
1045   }
1046 
1047   if (method->name() == vmSymbols::clone_name() &&
1048       resolved == vmClasses::Object_klass() &&
1049       recv_klass->is_array_klass()) {
1050     // Resolution of the clone method on arrays always returns Object.clone even though that method
1051     // has protected access.  There's some trickery in the access checking to make this all work out
1052     // so it's necessary to pass in the array class as the resolved class to properly trigger this.
1053     // Otherwise it's impossible to resolve the array clone methods through JVMCI.  See
1054     // LinkResolver::check_method_accessability for the matching logic.
1055     resolved = recv_klass;
1056   }
1057 
1058   LinkInfo link_info(resolved, h_name, h_signature, caller_klass);
1059   Method* m = nullptr;
1060   // Only do exact lookup if receiver klass has been linked.  Otherwise,
1061   // the vtable has not been setup, and the LinkResolver will fail.
1062   if (recv_klass->is_array_klass() ||
1063       (InstanceKlass::cast(recv_klass)->is_linked() && !recv_klass->is_interface())) {
1064     if (resolved->is_interface()) {
1065       m = LinkResolver::resolve_interface_call_or_null(recv_klass, link_info);
1066     } else {
1067       m = LinkResolver::resolve_virtual_call_or_null(recv_klass, link_info);
1068     }
1069   }
1070 
1071   if (m == nullptr) {
1072     // Return null if there was a problem with lookup (uninitialized class, etc.)
1073     return nullptr;
1074   }
1075 
1076   JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, m), JVMCI_CHECK_NULL);
1077   return JVMCIENV->get_jobject(result);
1078 C2V_END
1079 
1080 C2V_VMENTRY_0(jboolean, hasFinalizableSubclass,(JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1081   Klass* klass = UNPACK_PAIR(Klass, klass);
1082   assert(klass != nullptr, "method must not be called for primitive types");
1083   if (!klass->is_instance_klass()) {
1084     return false;
1085   }
1086   InstanceKlass* iklass = InstanceKlass::cast(klass);
1087   return Dependencies::find_finalizable_subclass(iklass) != nullptr;
1088 C2V_END
1089 
1090 C2V_VMENTRY_NULL(jobject, getClassInitializer, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1091   Klass* klass = UNPACK_PAIR(Klass, klass);
1092   if (!klass->is_instance_klass()) {
1093     return nullptr;
1094   }
1095   InstanceKlass* iklass = InstanceKlass::cast(klass);
1096   methodHandle clinit(THREAD, iklass->class_initializer());
1097   JVMCIObject result = JVMCIENV->get_jvmci_method(clinit, JVMCI_CHECK_NULL);
1098   return JVMCIENV->get_jobject(result);
1099 C2V_END
1100 
1101 C2V_VMENTRY_0(jlong, getMaxCallTargetOffset, (JNIEnv* env, jobject, jlong addr))
1102   address target_addr = (address) addr;
1103   if (target_addr != nullptr) {
1104     int64_t off_low = (int64_t)target_addr - ((int64_t)CodeCache::low_bound() + sizeof(int));
1105     int64_t off_high = (int64_t)target_addr - ((int64_t)CodeCache::high_bound() + sizeof(int));
1106     return MAX2(ABS(off_low), ABS(off_high));
1107   }
1108   return -1;
1109 C2V_END
1110 
1111 C2V_VMENTRY(void, setNotInlinableOrCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1112   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1113   method->set_is_not_c1_compilable();
1114   method->set_is_not_c2_compilable();
1115   method->set_dont_inline(true);
1116 C2V_END
1117 
1118 C2V_VMENTRY_0(jint, getInstallCodeFlags, (JNIEnv *env, jobject))
1119   int flags = 0;
1120 #ifndef PRODUCT
1121   flags |= 0x0001; // VM will install block comments
1122   flags |= 0x0004; // Enable HotSpotJVMCIRuntime.Option.CodeSerializationTypeInfo if not explicitly set
1123 #endif
1124   if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
1125     // VM needs to track method dependencies
1126     flags |= 0x0002;
1127   }
1128   return flags;
1129 C2V_END
1130 
1131 C2V_VMENTRY_0(jint, installCode0, (JNIEnv *env, jobject,
1132     jlong compiled_code_buffer,
1133     jlong serialization_ns,
1134     bool with_type_info,
1135     jobject compiled_code,
1136     jobjectArray object_pool,
1137     jobject installed_code,
1138     jlong failed_speculations_address,
1139     jbyteArray speculations_obj))
1140   HandleMark hm(THREAD);
1141   JNIHandleMark jni_hm(thread);
1142 
1143   JVMCIObject compiled_code_handle = JVMCIENV->wrap(compiled_code);
1144   objArrayHandle object_pool_handle(thread, JVMCIENV->is_hotspot() ? (objArrayOop) JNIHandles::resolve(object_pool) : nullptr);
1145 
1146   CodeBlob* cb = nullptr;
1147   JVMCIObject installed_code_handle = JVMCIENV->wrap(installed_code);
1148   JVMCIPrimitiveArray speculations_handle = JVMCIENV->wrap(speculations_obj);
1149 
1150   int speculations_len = JVMCIENV->get_length(speculations_handle);
1151   char* speculations = NEW_RESOURCE_ARRAY(char, speculations_len);
1152   JVMCIENV->copy_bytes_to(speculations_handle, (jbyte*) speculations, 0, speculations_len);
1153 
1154   JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK_JNI_ERR);
1155   JVMCICompiler::CodeInstallStats* stats = compiler->code_install_stats(!thread->is_Compiler_thread());
1156   elapsedTimer *timer = stats->timer();
1157   timer->add_nanoseconds(serialization_ns);
1158   TraceTime install_time("installCode", timer);
1159 
1160   CodeInstaller installer(JVMCIENV);
1161   JVMCINMethodHandle nmethod_handle(THREAD);
1162 
1163   JVMCI::CodeInstallResult result = installer.install(compiler,
1164       compiled_code_buffer,
1165       with_type_info,
1166       compiled_code_handle,
1167       object_pool_handle,
1168       cb,
1169       nmethod_handle,
1170       installed_code_handle,
1171       (FailedSpeculation**)(address) failed_speculations_address,
1172       speculations,
1173       speculations_len,
1174       JVMCI_CHECK_0);
1175 
1176   if (PrintCodeCacheOnCompilation) {
1177     stringStream s;
1178     // Dump code cache into a buffer before locking the tty,
1179     {
1180       MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1181       CodeCache::print_summary(&s, false);
1182     }
1183     ttyLocker ttyl;
1184     tty->print_raw_cr(s.freeze());
1185   }
1186 
1187   if (result != JVMCI::ok) {
1188     assert(cb == nullptr, "should be");
1189   } else {
1190     stats->on_install(cb);
1191     if (installed_code_handle.is_non_null()) {
1192       if (cb->is_nmethod()) {
1193         assert(JVMCIENV->isa_HotSpotNmethod(installed_code_handle), "wrong type");
1194         // Clear the link to an old nmethod first
1195         JVMCIObject nmethod_mirror = installed_code_handle;
1196         JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, true, JVMCI_CHECK_0);
1197       } else {
1198         assert(JVMCIENV->isa_InstalledCode(installed_code_handle), "wrong type");
1199       }
1200       // Initialize the link to the new code blob
1201       JVMCIENV->initialize_installed_code(installed_code_handle, cb, JVMCI_CHECK_0);
1202     }
1203   }
1204   return result;
1205 C2V_END
1206 
1207 C2V_VMENTRY(void, resetCompilationStatistics, (JNIEnv* env, jobject))
1208   JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK);
1209   CompilerStatistics* stats = compiler->stats();
1210   stats->_standard.reset();
1211   stats->_osr.reset();
1212 C2V_END
1213 
1214 C2V_VMENTRY_NULL(jobject, disassembleCodeBlob, (JNIEnv* env, jobject, jobject installedCode))
1215   HandleMark hm(THREAD);
1216 
1217   if (installedCode == nullptr) {
1218     JVMCI_THROW_MSG_NULL(NullPointerException, "installedCode is null");
1219   }
1220 
1221   JVMCIObject installedCodeObject = JVMCIENV->wrap(installedCode);
1222   CodeBlob* cb = JVMCIENV->get_code_blob(installedCodeObject);
1223   if (cb == nullptr) {
1224     return nullptr;
1225   }
1226 
1227   // We don't want the stringStream buffer to resize during disassembly as it
1228   // uses scoped resource memory. If a nested function called during disassembly uses
1229   // a ResourceMark and the buffer expands within the scope of the mark,
1230   // the buffer becomes garbage when that scope is exited. Experience shows that
1231   // the disassembled code is typically about 10x the code size so a fixed buffer
1232   // sized to 20x code size plus a fixed amount for header info should be sufficient.
1233   int bufferSize = cb->code_size() * 20 + 1024;
1234   char* buffer = NEW_RESOURCE_ARRAY(char, bufferSize);
1235   stringStream st(buffer, bufferSize);
1236   Disassembler::decode(cb, &st);
1237   if (st.size() <= 0) {
1238     return nullptr;
1239   }
1240 
1241   JVMCIObject result = JVMCIENV->create_string(st.as_string(), JVMCI_CHECK_NULL);
1242   return JVMCIENV->get_jobject(result);
1243 C2V_END
1244 
1245 C2V_VMENTRY_NULL(jobject, getStackTraceElement, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int bci))
1246   HandleMark hm(THREAD);
1247 
1248   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1249   JVMCIObject element = JVMCIENV->new_StackTraceElement(method, bci, JVMCI_CHECK_NULL);
1250   return JVMCIENV->get_jobject(element);
1251 C2V_END
1252 
1253 C2V_VMENTRY_NULL(jobject, executeHotSpotNmethod, (JNIEnv* env, jobject, jobject args, jobject hs_nmethod))
1254   // The incoming arguments array would have to contain JavaConstants instead of regular objects
1255   // and the return value would have to be wrapped as a JavaConstant.
1256   requireInHotSpot("executeHotSpotNmethod", JVMCI_CHECK_NULL);
1257 
1258   HandleMark hm(THREAD);
1259 
1260   JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod);
1261   methodHandle mh;
1262   {
1263     // Reduce the scope of JVMCINMethodHandle so that it isn't alive across the Java call.  Once the
1264     // nmethod has been validated and the method is fetched from the nmethod it's fine for the
1265     // nmethod to be reclaimed if necessary.
1266     JVMCINMethodHandle nmethod_handle(THREAD);
1267     nmethod* nm = JVMCIENV->get_nmethod(nmethod_mirror, nmethod_handle);
1268     if (nm == nullptr || !nm->is_in_use()) {
1269       JVMCI_THROW_NULL(InvalidInstalledCodeException);
1270     }
1271     methodHandle nmh(THREAD, nm->method());
1272     mh = nmh;
1273   }
1274   Symbol* signature = mh->signature();
1275   JavaCallArguments jca(mh->size_of_parameters());
1276 
1277   JavaArgumentUnboxer jap(signature, &jca, (arrayOop) JNIHandles::resolve(args), mh->is_static());
1278   JavaValue result(jap.return_type());
1279   jca.set_alternative_target(Handle(THREAD, JNIHandles::resolve(nmethod_mirror.as_jobject())));
1280   JavaCalls::call(&result, mh, &jca, CHECK_NULL);
1281 
1282   if (jap.return_type() == T_VOID) {
1283     return nullptr;
1284   } else if (is_reference_type(jap.return_type())) {
1285     return JNIHandles::make_local(THREAD, result.get_oop());
1286   } else {
1287     jvalue *value = (jvalue *) result.get_value_addr();
1288     // Narrow the value down if required (Important on big endian machines)
1289     switch (jap.return_type()) {
1290       case T_BOOLEAN:
1291        value->z = (jboolean) value->i;
1292        break;
1293       case T_BYTE:
1294        value->b = (jbyte) value->i;
1295        break;
1296       case T_CHAR:
1297        value->c = (jchar) value->i;
1298        break;
1299       case T_SHORT:
1300        value->s = (jshort) value->i;
1301        break;
1302       default:
1303         break;
1304     }
1305     JVMCIObject o = JVMCIENV->create_box(jap.return_type(), value, JVMCI_CHECK_NULL);
1306     return JVMCIENV->get_jobject(o);
1307   }
1308 C2V_END
1309 
1310 C2V_VMENTRY_NULL(jlongArray, getLineNumberTable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1311   Method* method = UNPACK_PAIR(Method, method);
1312   if (!method->has_linenumber_table()) {
1313     return nullptr;
1314   }
1315   u2 num_entries = 0;
1316   CompressedLineNumberReadStream streamForSize(method->compressed_linenumber_table());
1317   while (streamForSize.read_pair()) {
1318     num_entries++;
1319   }
1320 
1321   CompressedLineNumberReadStream stream(method->compressed_linenumber_table());
1322   JVMCIPrimitiveArray result = JVMCIENV->new_longArray(2 * num_entries, JVMCI_CHECK_NULL);
1323 
1324   int i = 0;
1325   jlong value;
1326   while (stream.read_pair()) {
1327     value = ((jlong) stream.bci());
1328     JVMCIENV->put_long_at(result, i, value);
1329     value = ((jlong) stream.line());
1330     JVMCIENV->put_long_at(result, i + 1, value);
1331     i += 2;
1332   }
1333 
1334   return (jlongArray) JVMCIENV->get_jobject(result);
1335 C2V_END
1336 
1337 C2V_VMENTRY_0(jlong, getLocalVariableTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1338   Method* method = UNPACK_PAIR(Method, method);
1339   if (!method->has_localvariable_table()) {
1340     return 0;
1341   }
1342   return (jlong) (address) method->localvariable_table_start();
1343 C2V_END
1344 
1345 C2V_VMENTRY_0(jint, getLocalVariableTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1346   Method* method = UNPACK_PAIR(Method, method);
1347   return method->localvariable_table_length();
1348 C2V_END
1349 
1350 static MethodData* get_profiling_method_data(const methodHandle& method, TRAPS) {
1351   MethodData* method_data = method->method_data();
1352   if (method_data == nullptr) {
1353     method->build_profiling_method_data(method, CHECK_NULL);
1354     method_data = method->method_data();
1355     if (method_data == nullptr) {
1356       THROW_MSG_NULL(vmSymbols::java_lang_OutOfMemoryError(), "cannot allocate MethodData")
1357     }
1358   }
1359   return method_data;
1360 }
1361 
1362 C2V_VMENTRY(void, reprofile, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1363   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1364   MethodCounters* mcs = method->method_counters();
1365   if (mcs != nullptr) {
1366     mcs->clear_counters();
1367   }
1368   NOT_PRODUCT(method->set_compiled_invocation_count(0));
1369 
1370   nmethod* code = method->code();
1371   if (code != nullptr) {
1372     code->make_not_entrant();
1373   }
1374 
1375   MethodData* method_data = method->method_data();
1376   if (method_data == nullptr) {
1377     method_data = get_profiling_method_data(method, CHECK);
1378   } else {
1379     CompilerThreadCanCallJava canCallJava(THREAD, true);
1380     method_data->reinitialize();
1381   }
1382 C2V_END
1383 
1384 
1385 C2V_VMENTRY(void, invalidateHotSpotNmethod, (JNIEnv* env, jobject, jobject hs_nmethod, jboolean deoptimize))
1386   JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod);
1387   JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, deoptimize, JVMCI_CHECK);
1388 C2V_END
1389 
1390 C2V_VMENTRY_NULL(jlongArray, collectCounters, (JNIEnv* env, jobject))
1391   // Returns a zero length array if counters aren't enabled
1392   JVMCIPrimitiveArray array = JVMCIENV->new_longArray(JVMCICounterSize, JVMCI_CHECK_NULL);
1393   if (JVMCICounterSize > 0) {
1394     jlong* temp_array = NEW_RESOURCE_ARRAY(jlong, JVMCICounterSize);
1395     JavaThread::collect_counters(temp_array, JVMCICounterSize);
1396     JVMCIENV->copy_longs_from(temp_array, array, 0, JVMCICounterSize);
1397   }
1398   return (jlongArray) JVMCIENV->get_jobject(array);
1399 C2V_END
1400 
1401 C2V_VMENTRY_0(jint, getCountersSize, (JNIEnv* env, jobject))
1402   return (jint) JVMCICounterSize;
1403 C2V_END
1404 
1405 C2V_VMENTRY_0(jboolean, setCountersSize, (JNIEnv* env, jobject, jint new_size))
1406   return JavaThread::resize_all_jvmci_counters(new_size);
1407 C2V_END
1408 
1409 C2V_VMENTRY_0(jint, allocateCompileId, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci))
1410   HandleMark hm(THREAD);
1411   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1412   if (method.is_null()) {
1413     JVMCI_THROW_0(NullPointerException);
1414   }
1415   if (entry_bci >= method->code_size() || entry_bci < -1) {
1416     JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Unexpected bci %d", entry_bci));
1417   }
1418   return CompileBroker::assign_compile_id_unlocked(THREAD, method, entry_bci);
1419 C2V_END
1420 
1421 
1422 C2V_VMENTRY_0(jboolean, isMature, (JNIEnv* env, jobject, jlong method_data_pointer))
1423   MethodData* mdo = (MethodData*) method_data_pointer;
1424   return mdo != nullptr && mdo->is_mature();
1425 C2V_END
1426 
1427 C2V_VMENTRY_0(jboolean, hasCompiledCodeForOSR, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci, int comp_level))
1428   Method* method = UNPACK_PAIR(Method, method);
1429   return method->lookup_osr_nmethod_for(entry_bci, comp_level, true) != nullptr;
1430 C2V_END
1431 
1432 C2V_VMENTRY_NULL(jobject, getSymbol, (JNIEnv* env, jobject, jlong symbol))
1433   JVMCIObject sym = JVMCIENV->create_string((Symbol*)(address)symbol, JVMCI_CHECK_NULL);
1434   return JVMCIENV->get_jobject(sym);
1435 C2V_END
1436 
1437 C2V_VMENTRY_NULL(jobject, getSignatureName, (JNIEnv* env, jobject, jlong klass_pointer))
1438   Klass* klass = UNPACK_PAIR(Klass, klass);
1439   JVMCIObject signature = JVMCIENV->create_string(klass->signature_name(), JVMCI_CHECK_NULL);
1440   return JVMCIENV->get_jobject(signature);
1441 C2V_END
1442 
1443 /*
1444  * Used by matches() to convert a ResolvedJavaMethod[] to an array of Method*.
1445  */
1446 static GrowableArray<Method*>* init_resolved_methods(jobjectArray methods, JVMCIEnv* JVMCIENV) {
1447   objArrayOop methods_oop = (objArrayOop) JNIHandles::resolve(methods);
1448   GrowableArray<Method*>* resolved_methods = new GrowableArray<Method*>(methods_oop->length());
1449   for (int i = 0; i < methods_oop->length(); i++) {
1450     oop resolved = methods_oop->obj_at(i);
1451     Method* resolved_method = nullptr;
1452     if (resolved->klass() == HotSpotJVMCI::HotSpotResolvedJavaMethodImpl::klass()) {
1453       resolved_method = HotSpotJVMCI::asMethod(JVMCIENV, resolved);
1454     }
1455     resolved_methods->append(resolved_method);
1456   }
1457   return resolved_methods;
1458 }
1459 
1460 /*
1461  * Used by c2v_iterateFrames to check if `method` matches one of the ResolvedJavaMethods in the `methods` array.
1462  * The ResolvedJavaMethod[] array is converted to a Method* array that is then cached in the resolved_methods_ref in/out parameter.
1463  * In case of a match, the matching ResolvedJavaMethod is returned in matched_jvmci_method_ref.
1464  */
1465 static bool matches(jobjectArray methods, Method* method, GrowableArray<Method*>** resolved_methods_ref, Handle* matched_jvmci_method_ref, Thread* THREAD, JVMCIEnv* JVMCIENV) {
1466   GrowableArray<Method*>* resolved_methods = *resolved_methods_ref;
1467   if (resolved_methods == nullptr) {
1468     resolved_methods = init_resolved_methods(methods, JVMCIENV);
1469     *resolved_methods_ref = resolved_methods;
1470   }
1471   assert(method != nullptr, "method should not be null");
1472   assert(resolved_methods->length() == ((objArrayOop) JNIHandles::resolve(methods))->length(), "arrays must have the same length");
1473   for (int i = 0; i < resolved_methods->length(); i++) {
1474     Method* m = resolved_methods->at(i);
1475     if (m == method) {
1476       *matched_jvmci_method_ref = Handle(THREAD, ((objArrayOop) JNIHandles::resolve(methods))->obj_at(i));
1477       return true;
1478     }
1479   }
1480   return false;
1481 }
1482 
1483 /*
1484  * Resolves an interface call to a concrete method handle.
1485  */
1486 static methodHandle resolve_interface_call(Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
1487   CallInfo callinfo;
1488   Handle receiver = args->receiver();
1489   Klass* recvrKlass = receiver.is_null() ? (Klass*)nullptr : receiver->klass();
1490   LinkInfo link_info(spec_klass, name, signature);
1491   LinkResolver::resolve_interface_call(
1492           callinfo, receiver, recvrKlass, link_info, true, CHECK_(methodHandle()));
1493   methodHandle method(THREAD, callinfo.selected_method());
1494   assert(method.not_null(), "should have thrown exception");
1495   return method;
1496 }
1497 
1498 /*
1499  * Used by c2v_iterateFrames to make a new vframeStream at the given compiled frame id (stack pointer) and vframe id.
1500  */
1501 static void resync_vframestream_to_compiled_frame(vframeStream& vfst, intptr_t* stack_pointer, int vframe_id, JavaThread* thread, TRAPS) {
1502   vfst = vframeStream(thread);
1503   while (vfst.frame_id() != stack_pointer && !vfst.at_end()) {
1504     vfst.next();
1505   }
1506   if (vfst.frame_id() != stack_pointer) {
1507     THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "stack frame not found after deopt")
1508   }
1509   if (vfst.is_interpreted_frame()) {
1510     THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "compiled stack frame expected")
1511   }
1512   while (vfst.vframe_id() != vframe_id) {
1513     if (vfst.at_end()) {
1514       THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "vframe not found after deopt")
1515     }
1516     vfst.next();
1517     assert(!vfst.is_interpreted_frame(), "Wrong frame type");
1518   }
1519 }
1520 
1521 /*
1522  * Used by c2v_iterateFrames. Returns an array of any unallocated scope objects or null if none.
1523  */
1524 static GrowableArray<ScopeValue*>* get_unallocated_objects_or_null(GrowableArray<ScopeValue*>* scope_objects) {
1525   GrowableArray<ScopeValue*>* unallocated = nullptr;
1526   for (int i = 0; i < scope_objects->length(); i++) {
1527     ObjectValue* sv = (ObjectValue*) scope_objects->at(i);
1528     if (sv->value().is_null()) {
1529       if (unallocated == nullptr) {
1530         unallocated = new GrowableArray<ScopeValue*>(scope_objects->length());
1531       }
1532       unallocated->append(sv);
1533     }
1534   }
1535   return unallocated;
1536 }
1537 
1538 C2V_VMENTRY_NULL(jobject, iterateFrames, (JNIEnv* env, jobject compilerToVM, jobjectArray initial_methods, jobjectArray match_methods, jint initialSkip, jobject visitor_handle))
1539 
1540   if (!thread->has_last_Java_frame()) {
1541     return nullptr;
1542   }
1543   Handle visitor(THREAD, JNIHandles::resolve_non_null(visitor_handle));
1544   KeepStackGCProcessedMark keep_stack(THREAD);
1545 
1546   requireInHotSpot("iterateFrames", JVMCI_CHECK_NULL);
1547 
1548   HotSpotJVMCI::HotSpotStackFrameReference::klass()->initialize(CHECK_NULL);
1549 
1550   vframeStream vfst(thread);
1551   jobjectArray methods = initial_methods;
1552   methodHandle visitor_method;
1553   GrowableArray<Method*>* resolved_methods = nullptr;
1554 
1555   while (!vfst.at_end()) { // frame loop
1556     bool realloc_called = false;
1557     intptr_t* frame_id = vfst.frame_id();
1558 
1559     // Previous compiledVFrame of this frame; use with at_scope() to reuse scope object pool.
1560     compiledVFrame* prev_cvf = nullptr;
1561 
1562     for (; !vfst.at_end() && vfst.frame_id() == frame_id; vfst.next()) { // vframe loop
1563       int frame_number = 0;
1564       Method *method = vfst.method();
1565       int bci = vfst.bci();
1566 
1567       Handle matched_jvmci_method;
1568       if (methods == nullptr || matches(methods, method, &resolved_methods, &matched_jvmci_method, THREAD, JVMCIENV)) {
1569         if (initialSkip > 0) {
1570           initialSkip--;
1571           continue;
1572         }
1573         javaVFrame* vf;
1574         if (prev_cvf != nullptr && prev_cvf->frame_pointer()->id() == frame_id) {
1575           assert(prev_cvf->is_compiled_frame(), "expected compiled Java frame");
1576           vf = prev_cvf->at_scope(vfst.decode_offset(), vfst.vframe_id());
1577         } else {
1578           vf = vfst.asJavaVFrame();
1579         }
1580 
1581         StackValueCollection* locals = nullptr;
1582         typeArrayHandle localIsVirtual_h;
1583         if (vf->is_compiled_frame()) {
1584           // compiled method frame
1585           compiledVFrame* cvf = compiledVFrame::cast(vf);
1586 
1587           ScopeDesc* scope = cvf->scope();
1588           // native wrappers do not have a scope
1589           if (scope != nullptr && scope->objects() != nullptr) {
1590             prev_cvf = cvf;
1591 
1592             GrowableArray<ScopeValue*>* objects = nullptr;
1593             if (!realloc_called) {
1594               objects = scope->objects();
1595             } else {
1596               // some object might already have been re-allocated, only reallocate the non-allocated ones
1597               objects = get_unallocated_objects_or_null(scope->objects());
1598             }
1599 
1600             if (objects != nullptr) {
1601               RegisterMap reg_map(vf->register_map());
1602               bool realloc_failures = Deoptimization::realloc_objects(thread, vf->frame_pointer(), &reg_map, objects, CHECK_NULL);
1603               Deoptimization::reassign_fields(vf->frame_pointer(), &reg_map, objects, realloc_failures, false);
1604               realloc_called = true;
1605             }
1606 
1607             GrowableArray<ScopeValue*>* local_values = scope->locals();
1608             for (int i = 0; i < local_values->length(); i++) {
1609               ScopeValue* value = local_values->at(i);
1610               assert(!value->is_object_merge(), "Should not be.");
1611               if (value->is_object()) {
1612                 if (localIsVirtual_h.is_null()) {
1613                   typeArrayOop array_oop = oopFactory::new_boolArray(local_values->length(), CHECK_NULL);
1614                   localIsVirtual_h = typeArrayHandle(THREAD, array_oop);
1615                 }
1616                 localIsVirtual_h->bool_at_put(i, true);
1617               }
1618             }
1619           }
1620 
1621           locals = cvf->locals();
1622           frame_number = cvf->vframe_id();
1623         } else {
1624           // interpreted method frame
1625           interpretedVFrame* ivf = interpretedVFrame::cast(vf);
1626 
1627           locals = ivf->locals();
1628         }
1629         assert(bci == vf->bci(), "wrong bci");
1630         assert(method == vf->method(), "wrong method");
1631 
1632         Handle frame_reference = HotSpotJVMCI::HotSpotStackFrameReference::klass()->allocate_instance_handle(CHECK_NULL);
1633         HotSpotJVMCI::HotSpotStackFrameReference::set_bci(JVMCIENV, frame_reference(), bci);
1634         if (matched_jvmci_method.is_null()) {
1635           methodHandle mh(THREAD, method);
1636           JVMCIObject jvmci_method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
1637           matched_jvmci_method = Handle(THREAD, JNIHandles::resolve(jvmci_method.as_jobject()));
1638         }
1639         HotSpotJVMCI::HotSpotStackFrameReference::set_method(JVMCIENV, frame_reference(), matched_jvmci_method());
1640         HotSpotJVMCI::HotSpotStackFrameReference::set_localIsVirtual(JVMCIENV, frame_reference(), localIsVirtual_h());
1641 
1642         HotSpotJVMCI::HotSpotStackFrameReference::set_compilerToVM(JVMCIENV, frame_reference(), JNIHandles::resolve(compilerToVM));
1643         HotSpotJVMCI::HotSpotStackFrameReference::set_stackPointer(JVMCIENV, frame_reference(), (jlong) frame_id);
1644         HotSpotJVMCI::HotSpotStackFrameReference::set_frameNumber(JVMCIENV, frame_reference(), frame_number);
1645 
1646         // initialize the locals array
1647         objArrayOop array_oop = oopFactory::new_objectArray(locals->size(), CHECK_NULL);
1648         objArrayHandle array(THREAD, array_oop);
1649         for (int i = 0; i < locals->size(); i++) {
1650           StackValue* var = locals->at(i);
1651           if (var->type() == T_OBJECT) {
1652             array->obj_at_put(i, locals->at(i)->get_obj()());
1653           }
1654         }
1655         HotSpotJVMCI::HotSpotStackFrameReference::set_locals(JVMCIENV, frame_reference(), array());
1656         HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, frame_reference(), JNI_FALSE);
1657 
1658         JavaValue result(T_OBJECT);
1659         JavaCallArguments args(visitor);
1660         if (visitor_method.is_null()) {
1661           visitor_method = resolve_interface_call(HotSpotJVMCI::InspectedFrameVisitor::klass(), vmSymbols::visitFrame_name(), vmSymbols::visitFrame_signature(), &args, CHECK_NULL);
1662         }
1663 
1664         args.push_oop(frame_reference);
1665         JavaCalls::call(&result, visitor_method, &args, CHECK_NULL);
1666         if (result.get_oop() != nullptr) {
1667           return JNIHandles::make_local(thread, result.get_oop());
1668         }
1669         if (methods == initial_methods) {
1670           methods = match_methods;
1671           if (resolved_methods != nullptr && JNIHandles::resolve(match_methods) != JNIHandles::resolve(initial_methods)) {
1672             resolved_methods = nullptr;
1673           }
1674         }
1675         assert(initialSkip == 0, "There should be no match before initialSkip == 0");
1676         if (HotSpotJVMCI::HotSpotStackFrameReference::objectsMaterialized(JVMCIENV, frame_reference()) == JNI_TRUE) {
1677           // the frame has been deoptimized, we need to re-synchronize the frame and vframe
1678           prev_cvf = nullptr;
1679           intptr_t* stack_pointer = (intptr_t*) HotSpotJVMCI::HotSpotStackFrameReference::stackPointer(JVMCIENV, frame_reference());
1680           resync_vframestream_to_compiled_frame(vfst, stack_pointer, frame_number, thread, CHECK_NULL);
1681         }
1682       }
1683     } // end of vframe loop
1684   } // end of frame loop
1685 
1686   // the end was reached without finding a matching method
1687   return nullptr;
1688 C2V_END
1689 
1690 C2V_VMENTRY_0(int, decodeIndyIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint indy_index, jboolean resolve))
1691   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1692   CallInfo callInfo;
1693   if (resolve) {
1694     LinkResolver::resolve_invoke(callInfo, Handle(), cp, indy_index, Bytecodes::_invokedynamic, CHECK_0);
1695     cp->cache()->set_dynamic_call(callInfo, indy_index);
1696   }
1697   return cp->resolved_indy_entry_at(indy_index)->constant_pool_index();
1698 C2V_END
1699 
1700 C2V_VMENTRY_0(int, decodeFieldIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint field_index))
1701   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1702   if (field_index < 0 || field_index >= cp->resolved_field_entries_length()) {
1703     JVMCI_THROW_MSG_0(IllegalStateException, err_msg("invalid field index %d", field_index));
1704   }
1705   return cp->resolved_field_entry_at(field_index)->constant_pool_index();
1706 C2V_END
1707 
1708 C2V_VMENTRY_0(int, decodeMethodIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint method_index))
1709   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1710   if (method_index < 0 || method_index >= cp->resolved_method_entries_length()) {
1711     JVMCI_THROW_MSG_0(IllegalStateException, err_msg("invalid method index %d", method_index));
1712   }
1713   return cp->resolved_method_entry_at(method_index)->constant_pool_index();
1714 C2V_END
1715 
1716 C2V_VMENTRY(void, resolveInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
1717   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1718   Klass* holder = cp->klass_ref_at(index, Bytecodes::_invokehandle, CHECK);
1719   Symbol* name = cp->name_ref_at(index, Bytecodes::_invokehandle);
1720   if (MethodHandles::is_signature_polymorphic_name(holder, name)) {
1721     CallInfo callInfo;
1722     LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, Bytecodes::_invokehandle, CHECK);
1723     cp->cache()->set_method_handle(index, callInfo);
1724   }
1725 C2V_END
1726 
1727 C2V_VMENTRY_0(jint, isResolvedInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode))
1728   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1729   ResolvedMethodEntry* entry = cp->cache()->resolved_method_entry_at(index);
1730   if (entry->is_resolved(Bytecodes::_invokehandle)) {
1731     // MethodHandle.invoke* --> LambdaForm?
1732     ResourceMark rm;
1733 
1734     LinkInfo link_info(cp, index, Bytecodes::_invokehandle, CATCH);
1735 
1736     Klass* resolved_klass = link_info.resolved_klass();
1737 
1738     Symbol* name_sym = cp->name_ref_at(index, Bytecodes::_invokehandle);
1739 
1740     vmassert(MethodHandles::is_method_handle_invoke_name(resolved_klass, name_sym), "!");
1741     vmassert(MethodHandles::is_signature_polymorphic_name(resolved_klass, name_sym), "!");
1742 
1743     methodHandle adapter_method(THREAD, entry->method());
1744 
1745     methodHandle resolved_method(adapter_method);
1746 
1747     // Can we treat it as a regular invokevirtual?
1748     if (resolved_method->method_holder() == resolved_klass && resolved_method->name() == name_sym) {
1749       vmassert(!resolved_method->is_static(),"!");
1750       vmassert(MethodHandles::is_signature_polymorphic_method(resolved_method()),"!");
1751       vmassert(!MethodHandles::is_signature_polymorphic_static(resolved_method->intrinsic_id()), "!");
1752       vmassert(cp->cache()->appendix_if_resolved(entry) == nullptr, "!");
1753 
1754       methodHandle m(THREAD, LinkResolver::linktime_resolve_virtual_method_or_null(link_info));
1755       vmassert(m == resolved_method, "!!");
1756       return -1;
1757     }
1758 
1759     return Bytecodes::_invokevirtual;
1760   }
1761   if ((Bytecodes::Code)opcode == Bytecodes::_invokedynamic) {
1762     if (cp->resolved_indy_entry_at(index)->is_resolved()) {
1763       return Bytecodes::_invokedynamic;
1764     }
1765   }
1766   return -1;
1767 C2V_END
1768 
1769 
1770 C2V_VMENTRY_NULL(jobject, getSignaturePolymorphicHolders, (JNIEnv* env, jobject))
1771   JVMCIObjectArray holders = JVMCIENV->new_String_array(2, JVMCI_CHECK_NULL);
1772   JVMCIObject mh = JVMCIENV->create_string("Ljava/lang/invoke/MethodHandle;", JVMCI_CHECK_NULL);
1773   JVMCIObject vh = JVMCIENV->create_string("Ljava/lang/invoke/VarHandle;", JVMCI_CHECK_NULL);
1774   JVMCIENV->put_object_at(holders, 0, mh);
1775   JVMCIENV->put_object_at(holders, 1, vh);
1776   return JVMCIENV->get_jobject(holders);
1777 C2V_END
1778 
1779 C2V_VMENTRY_0(jboolean, shouldDebugNonSafepoints, (JNIEnv* env, jobject))
1780   //see compute_recording_non_safepoints in debugInfroRec.cpp
1781   if (JvmtiExport::should_post_compiled_method_load() && FLAG_IS_DEFAULT(DebugNonSafepoints)) {
1782     return true;
1783   }
1784   return DebugNonSafepoints;
1785 C2V_END
1786 
1787 // public native void materializeVirtualObjects(HotSpotStackFrameReference stackFrame, boolean invalidate);
1788 C2V_VMENTRY(void, materializeVirtualObjects, (JNIEnv* env, jobject, jobject _hs_frame, bool invalidate))
1789   JVMCIObject hs_frame = JVMCIENV->wrap(_hs_frame);
1790   if (hs_frame.is_null()) {
1791     JVMCI_THROW_MSG(NullPointerException, "stack frame is null");
1792   }
1793 
1794   requireInHotSpot("materializeVirtualObjects", JVMCI_CHECK);
1795 
1796   JVMCIENV->HotSpotStackFrameReference_initialize(JVMCI_CHECK);
1797 
1798   // look for the given stack frame
1799   StackFrameStream fst(thread, false /* update */, true /* process_frames */);
1800   intptr_t* stack_pointer = (intptr_t*) JVMCIENV->get_HotSpotStackFrameReference_stackPointer(hs_frame);
1801   while (fst.current()->id() != stack_pointer && !fst.is_done()) {
1802     fst.next();
1803   }
1804   if (fst.current()->id() != stack_pointer) {
1805     JVMCI_THROW_MSG(IllegalStateException, "stack frame not found");
1806   }
1807 
1808   if (invalidate) {
1809     if (!fst.current()->is_compiled_frame()) {
1810       JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected");
1811     }
1812     fst.current()->cb()->as_nmethod()->make_not_entrant();
1813   }
1814   Deoptimization::deoptimize(thread, *fst.current(), Deoptimization::Reason_none);
1815   // look for the frame again as it has been updated by deopt (pc, deopt state...)
1816   StackFrameStream fstAfterDeopt(thread, true /* update */, true /* process_frames */);
1817   while (fstAfterDeopt.current()->id() != stack_pointer && !fstAfterDeopt.is_done()) {
1818     fstAfterDeopt.next();
1819   }
1820   if (fstAfterDeopt.current()->id() != stack_pointer) {
1821     JVMCI_THROW_MSG(IllegalStateException, "stack frame not found after deopt");
1822   }
1823 
1824   vframe* vf = vframe::new_vframe(fstAfterDeopt.current(), fstAfterDeopt.register_map(), thread);
1825   if (!vf->is_compiled_frame()) {
1826     JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected");
1827   }
1828 
1829   GrowableArray<compiledVFrame*>* virtualFrames = new GrowableArray<compiledVFrame*>(10);
1830   while (true) {
1831     assert(vf->is_compiled_frame(), "Wrong frame type");
1832     virtualFrames->push(compiledVFrame::cast(vf));
1833     if (vf->is_top()) {
1834       break;
1835     }
1836     vf = vf->sender();
1837   }
1838 
1839   int last_frame_number = JVMCIENV->get_HotSpotStackFrameReference_frameNumber(hs_frame);
1840   if (last_frame_number >= virtualFrames->length()) {
1841     JVMCI_THROW_MSG(IllegalStateException, "invalid frame number");
1842   }
1843 
1844   // Reallocate the non-escaping objects and restore their fields.
1845   assert (virtualFrames->at(last_frame_number)->scope() != nullptr,"invalid scope");
1846   GrowableArray<ScopeValue*>* objects = virtualFrames->at(last_frame_number)->scope()->objects();
1847 
1848   if (objects == nullptr) {
1849     // no objects to materialize
1850     return;
1851   }
1852 
1853   bool realloc_failures = Deoptimization::realloc_objects(thread, fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, CHECK);
1854   Deoptimization::reassign_fields(fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, realloc_failures, false);
1855 
1856   for (int frame_index = 0; frame_index < virtualFrames->length(); frame_index++) {
1857     compiledVFrame* cvf = virtualFrames->at(frame_index);
1858 
1859     GrowableArray<ScopeValue*>* scopedValues = cvf->scope()->locals();
1860     StackValueCollection* locals = cvf->locals();
1861     if (locals != nullptr) {
1862       for (int i2 = 0; i2 < locals->size(); i2++) {
1863         StackValue* var = locals->at(i2);
1864         assert(!scopedValues->at(i2)->is_object_merge(), "Should not be.");
1865         if (var->type() == T_OBJECT && scopedValues->at(i2)->is_object()) {
1866           jvalue val;
1867           val.l = cast_from_oop<jobject>(locals->at(i2)->get_obj()());
1868           cvf->update_local(T_OBJECT, i2, val);
1869         }
1870       }
1871     }
1872 
1873     GrowableArray<ScopeValue*>* scopeExpressions = cvf->scope()->expressions();
1874     StackValueCollection* expressions = cvf->expressions();
1875     if (expressions != nullptr) {
1876       for (int i2 = 0; i2 < expressions->size(); i2++) {
1877         StackValue* var = expressions->at(i2);
1878         assert(!scopeExpressions->at(i2)->is_object_merge(), "Should not be.");
1879         if (var->type() == T_OBJECT && scopeExpressions->at(i2)->is_object()) {
1880           jvalue val;
1881           val.l = cast_from_oop<jobject>(expressions->at(i2)->get_obj()());
1882           cvf->update_stack(T_OBJECT, i2, val);
1883         }
1884       }
1885     }
1886 
1887     GrowableArray<MonitorValue*>* scopeMonitors = cvf->scope()->monitors();
1888     GrowableArray<MonitorInfo*>* monitors = cvf->monitors();
1889     if (monitors != nullptr) {
1890       for (int i2 = 0; i2 < monitors->length(); i2++) {
1891         cvf->update_monitor(i2, monitors->at(i2));
1892       }
1893     }
1894   }
1895 
1896   // all locals are materialized by now
1897   JVMCIENV->set_HotSpotStackFrameReference_localIsVirtual(hs_frame, nullptr);
1898   // update the locals array
1899   JVMCIObjectArray array = JVMCIENV->get_HotSpotStackFrameReference_locals(hs_frame);
1900   StackValueCollection* locals = virtualFrames->at(last_frame_number)->locals();
1901   for (int i = 0; i < locals->size(); i++) {
1902     StackValue* var = locals->at(i);
1903     if (var->type() == T_OBJECT) {
1904       JVMCIENV->put_object_at(array, i, HotSpotJVMCI::wrap(locals->at(i)->get_obj()()));
1905     }
1906   }
1907   HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, hs_frame, JNI_TRUE);
1908 C2V_END
1909 
1910 // Use of tty does not require the current thread to be attached to the VM
1911 // so no need for a full C2V_VMENTRY transition.
1912 C2V_VMENTRY_PREFIX(void, writeDebugOutput, (JNIEnv* env, jobject, jlong buffer, jint length, bool flush))
1913   if (length <= 8) {
1914     tty->write((char*) &buffer, length);
1915   } else {
1916     tty->write((char*) buffer, length);
1917   }
1918   if (flush) {
1919     tty->flush();
1920   }
1921 C2V_END
1922 
1923 // Use of tty does not require the current thread to be attached to the VM
1924 // so no need for a full C2V_VMENTRY transition.
1925 C2V_VMENTRY_PREFIX(void, flushDebugOutput, (JNIEnv* env, jobject))
1926   tty->flush();
1927 C2V_END
1928 
1929 C2V_VMENTRY_0(jint, methodDataProfileDataSize, (JNIEnv* env, jobject, jlong method_data_pointer, jint position))
1930   MethodData* mdo = (MethodData*) method_data_pointer;
1931   ProfileData* profile_data = mdo->data_at(position);
1932   if (mdo->is_valid(profile_data)) {
1933     return profile_data->size_in_bytes();
1934   }
1935   // Java code should never directly access the extra data section
1936   JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Invalid profile data position %d", position));
1937 C2V_END
1938 
1939 C2V_VMENTRY_0(jint, methodDataExceptionSeen, (JNIEnv* env, jobject, jlong method_data_pointer, jint bci))
1940   MethodData* mdo = (MethodData*) method_data_pointer;
1941 
1942   // Lock to read ProfileData, and ensure lock is not broken by a safepoint
1943   MutexLocker mu(mdo->extra_data_lock(), Mutex::_no_safepoint_check_flag);
1944 
1945   DataLayout* data    = mdo->extra_data_base();
1946   DataLayout* end   = mdo->args_data_limit();
1947   for (;; data = mdo->next_extra(data)) {
1948     assert(data < end, "moved past end of extra data");
1949     int tag = data->tag();
1950     switch(tag) {
1951       case DataLayout::bit_data_tag: {
1952         BitData* bit_data = (BitData*) data->data_in();
1953         if (bit_data->bci() == bci) {
1954           return bit_data->exception_seen() ? 1 : 0;
1955         }
1956         break;
1957       }
1958     case DataLayout::no_tag:
1959       // There is a free slot so return false since a BitData would have been allocated to record
1960       // true if it had been seen.
1961       return 0;
1962     case DataLayout::arg_info_data_tag:
1963       // The bci wasn't found and there are no free slots to record a trap for this location, so always
1964       // return unknown.
1965       return -1;
1966     }
1967   }
1968   ShouldNotReachHere();
1969   return -1;
1970 C2V_END
1971 
1972 C2V_VMENTRY_NULL(jobject, getInterfaces, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1973   Klass* klass = UNPACK_PAIR(Klass, klass);
1974   if (klass == nullptr) {
1975     JVMCI_THROW_NULL(NullPointerException);
1976   }
1977 
1978   if (!klass->is_instance_klass()) {
1979     JVMCI_THROW_MSG_NULL(InternalError, err_msg("Class %s must be instance klass", klass->external_name()));
1980   }
1981   InstanceKlass* iklass = InstanceKlass::cast(klass);
1982 
1983   // Regular instance klass, fill in all local interfaces
1984   int size = iklass->local_interfaces()->length();
1985   JVMCIObjectArray interfaces = JVMCIENV->new_HotSpotResolvedObjectTypeImpl_array(size, JVMCI_CHECK_NULL);
1986   for (int index = 0; index < size; index++) {
1987     JVMCIKlassHandle klass(THREAD);
1988     Klass* k = iklass->local_interfaces()->at(index);
1989     klass = k;
1990     JVMCIObject type = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
1991     JVMCIENV->put_object_at(interfaces, index, type);
1992   }
1993   return JVMCIENV->get_jobject(interfaces);
1994 C2V_END
1995 
1996 C2V_VMENTRY_NULL(jobject, getComponentType, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1997   Klass* klass = UNPACK_PAIR(Klass, klass);
1998   if (klass == nullptr) {
1999     JVMCI_THROW_NULL(NullPointerException);
2000   }
2001 
2002   if (!klass->is_array_klass()) {
2003     return nullptr;
2004   }
2005   oop mirror = klass->java_mirror();
2006   oop component_mirror = java_lang_Class::component_mirror(mirror);
2007   if (component_mirror == nullptr) {
2008     JVMCI_THROW_MSG_NULL(NullPointerException,
2009                          err_msg("Component mirror for array class %s is null", klass->external_name()))
2010   }
2011 
2012   Klass* component_klass = java_lang_Class::as_Klass(component_mirror);
2013   if (component_klass != nullptr) {
2014     JVMCIKlassHandle klass_handle(THREAD, component_klass);
2015     JVMCIObject result = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL);
2016     return JVMCIENV->get_jobject(result);
2017   }
2018   BasicType type = java_lang_Class::primitive_type(component_mirror);
2019   JVMCIObject result = JVMCIENV->get_jvmci_primitive_type(type);
2020   return JVMCIENV->get_jobject(result);
2021 C2V_END
2022 
2023 C2V_VMENTRY(void, ensureInitialized, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2024   Klass* klass = UNPACK_PAIR(Klass, klass);
2025   if (klass == nullptr) {
2026     JVMCI_THROW(NullPointerException);
2027   }
2028   if (klass->should_be_initialized()) {
2029     InstanceKlass* k = InstanceKlass::cast(klass);
2030     k->initialize(CHECK);
2031   }
2032 C2V_END
2033 
2034 C2V_VMENTRY(void, ensureLinked, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2035   CompilerThreadCanCallJava canCallJava(thread, true); // Linking requires Java calls
2036   Klass* klass = UNPACK_PAIR(Klass, klass);
2037   if (klass == nullptr) {
2038     JVMCI_THROW(NullPointerException);
2039   }
2040   if (klass->is_instance_klass()) {
2041     InstanceKlass* k = InstanceKlass::cast(klass);
2042     k->link_class(CHECK);
2043   }
2044 C2V_END
2045 
2046 C2V_VMENTRY_0(jint, interpreterFrameSize, (JNIEnv* env, jobject, jobject bytecode_frame_handle))
2047   if (bytecode_frame_handle == nullptr) {
2048     JVMCI_THROW_0(NullPointerException);
2049   }
2050 
2051   JVMCIObject top_bytecode_frame = JVMCIENV->wrap(bytecode_frame_handle);
2052   JVMCIObject bytecode_frame = top_bytecode_frame;
2053   int size = 0;
2054   int callee_parameters = 0;
2055   int callee_locals = 0;
2056   Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame));
2057   int extra_args = method->max_stack() - JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame);
2058 
2059   while (bytecode_frame.is_non_null()) {
2060     int locks = JVMCIENV->get_BytecodeFrame_numLocks(bytecode_frame);
2061     int temps = JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame);
2062     bool is_top_frame = (JVMCIENV->equals(bytecode_frame, top_bytecode_frame));
2063     Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame));
2064 
2065     int frame_size = BytesPerWord * Interpreter::size_activation(method->max_stack(),
2066                                                                  temps + callee_parameters,
2067                                                                  extra_args,
2068                                                                  locks,
2069                                                                  callee_parameters,
2070                                                                  callee_locals,
2071                                                                  is_top_frame);
2072     size += frame_size;
2073 
2074     callee_parameters = method->size_of_parameters();
2075     callee_locals = method->max_locals();
2076     extra_args = 0;
2077     bytecode_frame = JVMCIENV->get_BytecodePosition_caller(bytecode_frame);
2078   }
2079   return size + Deoptimization::last_frame_adjust(0, callee_locals) * BytesPerWord;
2080 C2V_END
2081 
2082 C2V_VMENTRY(void, compileToBytecode, (JNIEnv* env, jobject, jobject lambda_form_handle))
2083   Handle lambda_form = JVMCIENV->asConstant(JVMCIENV->wrap(lambda_form_handle), JVMCI_CHECK);
2084   if (lambda_form->is_a(vmClasses::LambdaForm_klass())) {
2085     TempNewSymbol compileToBytecode = SymbolTable::new_symbol("compileToBytecode");
2086     JavaValue result(T_VOID);
2087     JavaCalls::call_special(&result, lambda_form, vmClasses::LambdaForm_klass(), compileToBytecode, vmSymbols::void_method_signature(), CHECK);
2088   } else {
2089     JVMCI_THROW_MSG(IllegalArgumentException,
2090                     err_msg("Unexpected type: %s", lambda_form->klass()->external_name()))
2091   }
2092 C2V_END
2093 
2094 C2V_VMENTRY_0(jint, getIdentityHashCode, (JNIEnv* env, jobject, jobject object))
2095   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
2096   return obj->identity_hash();
2097 C2V_END
2098 
2099 C2V_VMENTRY_0(jboolean, isInternedString, (JNIEnv* env, jobject, jobject object))
2100   Handle str = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
2101   if (!java_lang_String::is_instance(str())) {
2102     return false;
2103   }
2104   int len;
2105   jchar* name = java_lang_String::as_unicode_string(str(), len, CHECK_false);
2106   return (StringTable::lookup(name, len) != nullptr);
2107 C2V_END
2108 
2109 
2110 C2V_VMENTRY_NULL(jobject, unboxPrimitive, (JNIEnv* env, jobject, jobject object))
2111   if (object == nullptr) {
2112     JVMCI_THROW_NULL(NullPointerException);
2113   }
2114   Handle box = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2115   BasicType type = java_lang_boxing_object::basic_type(box());
2116   jvalue result;
2117   if (java_lang_boxing_object::get_value(box(), &result) == T_ILLEGAL) {
2118     return nullptr;
2119   }
2120   JVMCIObject boxResult = JVMCIENV->create_box(type, &result, JVMCI_CHECK_NULL);
2121   return JVMCIENV->get_jobject(boxResult);
2122 C2V_END
2123 
2124 C2V_VMENTRY_NULL(jobject, boxPrimitive, (JNIEnv* env, jobject, jobject object))
2125   if (object == nullptr) {
2126     JVMCI_THROW_NULL(NullPointerException);
2127   }
2128   JVMCIObject box = JVMCIENV->wrap(object);
2129   BasicType type = JVMCIENV->get_box_type(box);
2130   if (type == T_ILLEGAL) {
2131     return nullptr;
2132   }
2133   jvalue value = JVMCIENV->get_boxed_value(type, box);
2134   JavaValue box_result(T_OBJECT);
2135   JavaCallArguments jargs;
2136   Klass* box_klass = nullptr;
2137   Symbol* box_signature = nullptr;
2138 #define BOX_CASE(bt, v, argtype, name)           \
2139   case bt: \
2140     jargs.push_##argtype(value.v); \
2141     box_klass = vmClasses::name##_klass(); \
2142     box_signature = vmSymbols::name##_valueOf_signature(); \
2143     break
2144 
2145   switch (type) {
2146     BOX_CASE(T_BOOLEAN, z, int, Boolean);
2147     BOX_CASE(T_BYTE, b, int, Byte);
2148     BOX_CASE(T_CHAR, c, int, Character);
2149     BOX_CASE(T_SHORT, s, int, Short);
2150     BOX_CASE(T_INT, i, int, Integer);
2151     BOX_CASE(T_LONG, j, long, Long);
2152     BOX_CASE(T_FLOAT, f, float, Float);
2153     BOX_CASE(T_DOUBLE, d, double, Double);
2154     default:
2155       ShouldNotReachHere();
2156   }
2157 #undef BOX_CASE
2158 
2159   JavaCalls::call_static(&box_result,
2160                          box_klass,
2161                          vmSymbols::valueOf_name(),
2162                          box_signature, &jargs, CHECK_NULL);
2163   oop hotspot_box = box_result.get_oop();
2164   JVMCIObject result = JVMCIENV->get_object_constant(hotspot_box, false);
2165   return JVMCIENV->get_jobject(result);
2166 C2V_END
2167 
2168 C2V_VMENTRY_NULL(jobjectArray, getDeclaredConstructors, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2169   Klass* klass = UNPACK_PAIR(Klass, klass);
2170   if (klass == nullptr) {
2171     JVMCI_THROW_NULL(NullPointerException);
2172   }
2173   if (!klass->is_instance_klass()) {
2174     JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
2175     return JVMCIENV->get_jobjectArray(methods);
2176   }
2177 
2178   InstanceKlass* iklass = InstanceKlass::cast(klass);
2179   GrowableArray<Method*> constructors_array;
2180   for (int i = 0; i < iklass->methods()->length(); i++) {
2181     Method* m = iklass->methods()->at(i);
2182     if (m->is_object_initializer()) {
2183       constructors_array.append(m);
2184     }
2185   }
2186   JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(constructors_array.length(), JVMCI_CHECK_NULL);
2187   for (int i = 0; i < constructors_array.length(); i++) {
2188     methodHandle ctor(THREAD, constructors_array.at(i));
2189     JVMCIObject method = JVMCIENV->get_jvmci_method(ctor, JVMCI_CHECK_NULL);
2190     JVMCIENV->put_object_at(methods, i, method);
2191   }
2192   return JVMCIENV->get_jobjectArray(methods);
2193 C2V_END
2194 
2195 C2V_VMENTRY_NULL(jobjectArray, getDeclaredMethods, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2196   Klass* klass = UNPACK_PAIR(Klass, klass);
2197   if (klass == nullptr) {
2198     JVMCI_THROW_NULL(NullPointerException);
2199   }
2200   if (!klass->is_instance_klass()) {
2201     JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
2202     return JVMCIENV->get_jobjectArray(methods);
2203   }
2204 
2205   InstanceKlass* iklass = InstanceKlass::cast(klass);
2206   GrowableArray<Method*> methods_array;
2207   for (int i = 0; i < iklass->methods()->length(); i++) {
2208     Method* m = iklass->methods()->at(i);
2209     if (!m->is_object_initializer() && !m->is_static_initializer() && !m->is_overpass()) {
2210       methods_array.append(m);
2211     }
2212   }
2213   JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(methods_array.length(), JVMCI_CHECK_NULL);
2214   for (int i = 0; i < methods_array.length(); i++) {
2215     methodHandle mh(THREAD, methods_array.at(i));
2216     JVMCIObject method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
2217     JVMCIENV->put_object_at(methods, i, method);
2218   }
2219   return JVMCIENV->get_jobjectArray(methods);
2220 C2V_END
2221 
2222 C2V_VMENTRY_NULL(jobjectArray, getDeclaredFieldsInfo, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2223   Klass* klass = UNPACK_PAIR(Klass, klass);
2224   if (klass == nullptr) {
2225     JVMCI_THROW_NULL(NullPointerException);
2226   }
2227   if (!klass->is_instance_klass()) {
2228     JVMCI_THROW_MSG_NULL(IllegalArgumentException, "not an InstanceKlass");
2229   }
2230   InstanceKlass* iklass = InstanceKlass::cast(klass);
2231   int java_fields, injected_fields;
2232   GrowableArray<FieldInfo>* fields = FieldInfoStream::create_FieldInfoArray(iklass->fieldinfo_stream(), &java_fields, &injected_fields);
2233   JVMCIObjectArray array = JVMCIENV->new_FieldInfo_array(fields->length(), JVMCIENV);
2234   for (int i = 0; i < fields->length(); i++) {
2235     JVMCIObject field_info = JVMCIENV->new_FieldInfo(fields->adr_at(i), JVMCI_CHECK_NULL);
2236     JVMCIENV->put_object_at(array, i, field_info);
2237   }
2238   return array.as_jobject();
2239 C2V_END
2240 
2241 static jobject read_field_value(Handle obj, long displacement, jchar type_char, bool is_static, Thread* THREAD, JVMCIEnv* JVMCIENV) {
2242 
2243   BasicType basic_type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_NULL);
2244   int basic_type_elemsize = type2aelembytes(basic_type);
2245   if (displacement < 0 || ((size_t) displacement + basic_type_elemsize > HeapWordSize * obj->size())) {
2246     // Reading outside of the object bounds
2247     JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading outside object bounds");
2248   }
2249 
2250   // Perform basic sanity checks on the read.  Primitive reads are permitted to read outside the
2251   // bounds of their fields but object reads must map exactly onto the underlying oop slot.
2252   bool aligned = (displacement % basic_type_elemsize) == 0;
2253   if (!aligned) {
2254     JVMCI_THROW_MSG_NULL(IllegalArgumentException, "read is unaligned");
2255   }
2256   if (basic_type == T_OBJECT) {
2257     if (obj->is_objArray()) {
2258       if (displacement < arrayOopDesc::base_offset_in_bytes(T_OBJECT)) {
2259         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header");
2260       }
2261       if (displacement + heapOopSize > arrayOopDesc::base_offset_in_bytes(T_OBJECT) + arrayOop(obj())->length() * heapOopSize) {
2262         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading after last array element");
2263       }
2264       if (((displacement - arrayOopDesc::base_offset_in_bytes(T_OBJECT)) % heapOopSize) != 0) {
2265         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "misaligned object read from array");
2266       }
2267     } else if (obj->is_instance()) {
2268       InstanceKlass* klass = InstanceKlass::cast(is_static ? java_lang_Class::as_Klass(obj()) : obj->klass());
2269       fieldDescriptor fd;
2270       if (!klass->find_field_from_offset(displacement, is_static, &fd)) {
2271         JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Can't find field at displacement %d in object of type %s", (int) displacement, klass->external_name()));
2272       }
2273       if (fd.field_type() != T_OBJECT && fd.field_type() != T_ARRAY) {
2274         JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Field at displacement %d in object of type %s is %s but expected %s", (int) displacement,
2275                                                                klass->external_name(), type2name(fd.field_type()), type2name(basic_type)));
2276       }
2277     } else if (obj->is_typeArray()) {
2278       JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Can't read objects from primitive array");
2279     } else {
2280       ShouldNotReachHere();
2281     }
2282   } else {
2283     if (obj->is_objArray()) {
2284       JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Reading primitive from object array");
2285     } else if (obj->is_typeArray()) {
2286       if (displacement < arrayOopDesc::base_offset_in_bytes(ArrayKlass::cast(obj->klass())->element_type())) {
2287         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header");
2288       }
2289     }
2290   }
2291 
2292   jlong value = 0;
2293 
2294   // Treat all reads as volatile for simplicity as this function can be used
2295   // both for reading Java fields declared as volatile as well as for constant
2296   // folding Unsafe.get* methods with volatile semantics.
2297 
2298   switch (basic_type) {
2299     case T_BOOLEAN: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jboolean>(displacement)); break;
2300     case T_BYTE:    value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jbyte>(displacement));    break;
2301     case T_SHORT:   value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jshort>(displacement));   break;
2302     case T_CHAR:    value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jchar>(displacement));    break;
2303     case T_FLOAT:
2304     case T_INT:     value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jint>(displacement));     break;
2305     case T_DOUBLE:
2306     case T_LONG:    value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jlong>(displacement));    break;
2307 
2308     case T_OBJECT: {
2309       if (displacement == java_lang_Class::component_mirror_offset() && java_lang_Class::is_instance(obj()) &&
2310           (java_lang_Class::as_Klass(obj()) == nullptr || !java_lang_Class::as_Klass(obj())->is_array_klass())) {
2311         // Class.componentType for non-array classes can transiently contain an int[] that's
2312         // used for locking so always return null to mimic Class.getComponentType()
2313         return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
2314       }
2315 
2316       // Perform the read including any barriers required to make the reference strongly reachable
2317       // since it will be wrapped as a JavaConstant.
2318       oop value = obj->obj_field_access<MO_SEQ_CST | ON_UNKNOWN_OOP_REF>(displacement);
2319 
2320       if (value == nullptr) {
2321         return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
2322       } else {
2323         if (value != nullptr && !oopDesc::is_oop(value)) {
2324           // Throw an exception to improve debuggability.  This check isn't totally reliable because
2325           // is_oop doesn't try to be completety safe but for most invalid values it provides a good
2326           // enough answer.  It possible to crash in the is_oop call but that just means the crash happens
2327           // closer to where things went wrong.
2328           JVMCI_THROW_MSG_NULL(InternalError, err_msg("Read bad oop " INTPTR_FORMAT " at offset " JLONG_FORMAT " in object " INTPTR_FORMAT " of type %s",
2329                                                       p2i(value), displacement, p2i(obj()), obj->klass()->external_name()));
2330         }
2331 
2332         JVMCIObject result = JVMCIENV->get_object_constant(value);
2333         return JVMCIENV->get_jobject(result);
2334       }
2335     }
2336 
2337     default:
2338       ShouldNotReachHere();
2339   }
2340   JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, value, JVMCI_CHECK_NULL);
2341   return JVMCIENV->get_jobject(result);
2342 }
2343 
2344 C2V_VMENTRY_NULL(jobject, readStaticFieldValue, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), long displacement, jchar type_char))
2345   Klass* klass = UNPACK_PAIR(Klass, klass);
2346   Handle obj(THREAD, klass->java_mirror());
2347   return read_field_value(obj, displacement, type_char, true, THREAD, JVMCIENV);
2348 C2V_END
2349 
2350 C2V_VMENTRY_NULL(jobject, readFieldValue, (JNIEnv* env, jobject, jobject object, ARGUMENT_PAIR(expected_type), long displacement, jchar type_char))
2351   if (object == nullptr) {
2352     JVMCI_THROW_NULL(NullPointerException);
2353   }
2354 
2355   // asConstant will throw an NPE if a constant contains null
2356   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2357 
2358   Klass* expected_klass = UNPACK_PAIR(Klass, expected_type);
2359   if (expected_klass != nullptr) {
2360     InstanceKlass* expected_iklass = InstanceKlass::cast(expected_klass);
2361     if (!obj->is_a(expected_iklass)) {
2362       // Not of the expected type
2363       return nullptr;
2364     }
2365   }
2366   bool is_static = expected_klass == nullptr && java_lang_Class::is_instance(obj()) && displacement >= InstanceMirrorKlass::offset_of_static_fields();
2367   return read_field_value(obj, displacement, type_char, is_static, THREAD, JVMCIENV);
2368 C2V_END
2369 
2370 C2V_VMENTRY_0(jboolean, isInstance, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jobject object))
2371   Klass* klass = UNPACK_PAIR(Klass, klass);
2372   if (object == nullptr || klass == nullptr) {
2373     JVMCI_THROW_0(NullPointerException);
2374   }
2375   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
2376   return obj->is_a(klass);
2377 C2V_END
2378 
2379 C2V_VMENTRY_0(jboolean, isAssignableFrom, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(subklass)))
2380   Klass* klass = UNPACK_PAIR(Klass, klass);
2381   Klass* subklass = UNPACK_PAIR(Klass, subklass);
2382   if (klass == nullptr || subklass == nullptr) {
2383     JVMCI_THROW_0(NullPointerException);
2384   }
2385   return subklass->is_subtype_of(klass);
2386 C2V_END
2387 
2388 C2V_VMENTRY_0(jboolean, isTrustedForIntrinsics, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2389   Klass* klass = UNPACK_PAIR(Klass, klass);
2390   if (klass == nullptr) {
2391     JVMCI_THROW_0(NullPointerException);
2392   }
2393   InstanceKlass* ik = InstanceKlass::cast(klass);
2394   if (ik->class_loader_data()->is_boot_class_loader_data() || ik->class_loader_data()->is_platform_class_loader_data()) {
2395     return true;
2396   }
2397   return false;
2398 C2V_END
2399 
2400 C2V_VMENTRY_NULL(jobject, asJavaType, (JNIEnv* env, jobject, jobject object))
2401   if (object == nullptr) {
2402     JVMCI_THROW_NULL(NullPointerException);
2403   }
2404   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2405   if (java_lang_Class::is_instance(obj())) {
2406     if (java_lang_Class::is_primitive(obj())) {
2407       JVMCIObject type = JVMCIENV->get_jvmci_primitive_type(java_lang_Class::primitive_type(obj()));
2408       return JVMCIENV->get_jobject(type);
2409     }
2410     Klass* klass = java_lang_Class::as_Klass(obj());
2411     JVMCIKlassHandle klass_handle(THREAD);
2412     klass_handle = klass;
2413     JVMCIObject type = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL);
2414     return JVMCIENV->get_jobject(type);
2415   }
2416   return nullptr;
2417 C2V_END
2418 
2419 
2420 C2V_VMENTRY_NULL(jobject, asString, (JNIEnv* env, jobject, jobject object))
2421   if (object == nullptr) {
2422     JVMCI_THROW_NULL(NullPointerException);
2423   }
2424   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2425   const char* str = java_lang_String::as_utf8_string(obj());
2426   JVMCIObject result = JVMCIENV->create_string(str, JVMCI_CHECK_NULL);
2427   return JVMCIENV->get_jobject(result);
2428 C2V_END
2429 
2430 
2431 C2V_VMENTRY_0(jboolean, equals, (JNIEnv* env, jobject, jobject x, jlong xHandle, jobject y, jlong yHandle))
2432   if (x == nullptr || y == nullptr) {
2433     JVMCI_THROW_0(NullPointerException);
2434   }
2435   return JVMCIENV->resolve_oop_handle(xHandle) == JVMCIENV->resolve_oop_handle(yHandle);
2436 C2V_END
2437 
2438 C2V_VMENTRY_NULL(jobject, getJavaMirror, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2439   Klass* klass = UNPACK_PAIR(Klass, klass);
2440   if (klass == nullptr) {
2441     JVMCI_THROW_NULL(NullPointerException);
2442   }
2443   Handle mirror(THREAD, klass->java_mirror());
2444   JVMCIObject result = JVMCIENV->get_object_constant(mirror());
2445   return JVMCIENV->get_jobject(result);
2446 C2V_END
2447 
2448 
2449 C2V_VMENTRY_0(jint, getArrayLength, (JNIEnv* env, jobject, jobject x))
2450   if (x == nullptr) {
2451     JVMCI_THROW_0(NullPointerException);
2452   }
2453   Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_0);
2454   if (xobj->klass()->is_array_klass()) {
2455     return arrayOop(xobj())->length();
2456   }
2457   return -1;
2458  C2V_END
2459 
2460 
2461 C2V_VMENTRY_NULL(jobject, readArrayElement, (JNIEnv* env, jobject, jobject x, int index))
2462   if (x == nullptr) {
2463     JVMCI_THROW_NULL(NullPointerException);
2464   }
2465   Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_NULL);
2466   if (xobj->klass()->is_array_klass()) {
2467     arrayOop array = arrayOop(xobj());
2468     BasicType element_type = ArrayKlass::cast(array->klass())->element_type();
2469     if (index < 0 || index >= array->length()) {
2470       return nullptr;
2471     }
2472     JVMCIObject result;
2473 
2474     if (element_type == T_OBJECT) {
2475       result = JVMCIENV->get_object_constant(objArrayOop(xobj())->obj_at(index));
2476       if (result.is_null()) {
2477         result = JVMCIENV->get_JavaConstant_NULL_POINTER();
2478       }
2479     } else {
2480       jvalue value;
2481       switch (element_type) {
2482         case T_DOUBLE:        value.d = typeArrayOop(xobj())->double_at(index);        break;
2483         case T_FLOAT:         value.f = typeArrayOop(xobj())->float_at(index);         break;
2484         case T_LONG:          value.j = typeArrayOop(xobj())->long_at(index);          break;
2485         case T_INT:           value.i = typeArrayOop(xobj())->int_at(index);            break;
2486         case T_SHORT:         value.s = typeArrayOop(xobj())->short_at(index);          break;
2487         case T_CHAR:          value.c = typeArrayOop(xobj())->char_at(index);           break;
2488         case T_BYTE:          value.b = typeArrayOop(xobj())->byte_at(index);           break;
2489         case T_BOOLEAN:       value.z = typeArrayOop(xobj())->byte_at(index) & 1;       break;
2490         default:              ShouldNotReachHere();
2491       }
2492       result = JVMCIENV->create_box(element_type, &value, JVMCI_CHECK_NULL);
2493     }
2494     assert(!result.is_null(), "must have a value");
2495     return JVMCIENV->get_jobject(result);
2496   }
2497   return nullptr;;
2498 C2V_END
2499 
2500 
2501 C2V_VMENTRY_0(jint, arrayBaseOffset, (JNIEnv* env, jobject, jchar type_char))
2502   BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
2503   return arrayOopDesc::base_offset_in_bytes(type);
2504 C2V_END
2505 
2506 C2V_VMENTRY_0(jint, arrayIndexScale, (JNIEnv* env, jobject, jchar type_char))
2507   BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
2508   return type2aelembytes(type);
2509 C2V_END
2510 
2511 C2V_VMENTRY(void, clearOopHandle, (JNIEnv* env, jobject, jlong oop_handle))
2512   if (oop_handle == 0L) {
2513     JVMCI_THROW(NullPointerException);
2514   }
2515   // Assert before nulling out, for better debugging.
2516   assert(JVMCIRuntime::is_oop_handle(oop_handle), "precondition");
2517   oop* oop_ptr = (oop*) oop_handle;
2518   NativeAccess<>::oop_store(oop_ptr, (oop) nullptr);
2519 C2V_END
2520 
2521 C2V_VMENTRY(void, releaseClearedOopHandles, (JNIEnv* env, jobject))
2522   JVMCIENV->runtime()->release_cleared_oop_handles();
2523 C2V_END
2524 
2525 static void requireJVMCINativeLibrary(JVMCI_TRAPS) {
2526   if (!UseJVMCINativeLibrary) {
2527     JVMCI_THROW_MSG(UnsupportedOperationException, "JVMCI shared library is not enabled (requires -XX:+UseJVMCINativeLibrary)");
2528   }
2529 }
2530 
2531 C2V_VMENTRY_NULL(jlongArray, registerNativeMethods, (JNIEnv* env, jobject, jclass mirror))
2532   requireJVMCINativeLibrary(JVMCI_CHECK_NULL);
2533   requireInHotSpot("registerNativeMethods", JVMCI_CHECK_NULL);
2534   char* sl_path;
2535   void* sl_handle;
2536   JVMCIRuntime* runtime;
2537   {
2538     // Ensure the JVMCI shared library runtime is initialized.
2539     PEER_JVMCIENV_FROM_THREAD(THREAD, false);
2540     PEER_JVMCIENV->check_init(JVMCI_CHECK_NULL);
2541 
2542     HandleMark hm(THREAD);
2543     runtime = JVMCI::compiler_runtime(thread);
2544     if (PEER_JVMCIENV->has_pending_exception()) {
2545       PEER_JVMCIENV->describe_pending_exception(tty);
2546     }
2547     sl_handle = JVMCI::get_shared_library(sl_path, false);
2548     if (sl_handle == nullptr) {
2549       JVMCI_THROW_MSG_NULL(InternalError, err_msg("Error initializing JVMCI runtime %d", runtime->id()));
2550     }
2551   }
2552 
2553   if (mirror == nullptr) {
2554     JVMCI_THROW_NULL(NullPointerException);
2555   }
2556   Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2557   if (klass == nullptr || !klass->is_instance_klass()) {
2558     JVMCI_THROW_MSG_NULL(IllegalArgumentException, "clazz is for primitive type");
2559   }
2560 
2561   InstanceKlass* iklass = InstanceKlass::cast(klass);
2562   for (int i = 0; i < iklass->methods()->length(); i++) {
2563     methodHandle method(THREAD, iklass->methods()->at(i));
2564     if (method->is_native()) {
2565 
2566       // Compute argument size
2567       int args_size = 1                             // JNIEnv
2568                     + (method->is_static() ? 1 : 0) // class for static methods
2569                     + method->size_of_parameters(); // actual parameters
2570 
2571       // 1) Try JNI short style
2572       stringStream st;
2573       char* pure_name = NativeLookup::pure_jni_name(method);
2574       guarantee(pure_name != nullptr, "Illegal native method name encountered");
2575       st.print_raw(pure_name);
2576       char* jni_name = st.as_string();
2577 
2578       address entry = (address) os::dll_lookup(sl_handle, jni_name);
2579       if (entry == nullptr) {
2580         // 2) Try JNI long style
2581         st.reset();
2582         char* long_name = NativeLookup::long_jni_name(method);
2583         guarantee(long_name != nullptr, "Illegal native method name encountered");
2584         st.print_raw(pure_name);
2585         st.print_raw(long_name);
2586         char* jni_long_name = st.as_string();
2587         entry = (address) os::dll_lookup(sl_handle, jni_long_name);
2588         if (entry == nullptr) {
2589           JVMCI_THROW_MSG_NULL(UnsatisfiedLinkError, err_msg("%s [neither %s nor %s exist in %s]",
2590               method->name_and_sig_as_C_string(),
2591               jni_name, jni_long_name, sl_path));
2592         }
2593       }
2594 
2595       if (method->has_native_function() && entry != method->native_function()) {
2596         JVMCI_THROW_MSG_NULL(UnsatisfiedLinkError, err_msg("%s [cannot re-link from " PTR_FORMAT " to " PTR_FORMAT "]",
2597             method->name_and_sig_as_C_string(), p2i(method->native_function()), p2i(entry)));
2598       }
2599       method->set_native_function(entry, Method::native_bind_event_is_interesting);
2600       log_debug(jni, resolve)("[Dynamic-linking native method %s.%s ... JNI] @ " PTR_FORMAT,
2601                               method->method_holder()->external_name(),
2602                               method->name()->as_C_string(),
2603                               p2i((void*) entry));
2604     }
2605   }
2606 
2607   typeArrayOop info_oop = oopFactory::new_longArray(4, CHECK_NULL);
2608   jlongArray info = (jlongArray) JNIHandles::make_local(THREAD, info_oop);
2609   runtime->init_JavaVM_info(info, JVMCI_CHECK_NULL);
2610   return info;
2611 C2V_END
2612 
2613 C2V_VMENTRY_PREFIX(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject c2vm))
2614   if (thread == nullptr || thread->libjvmci_runtime() == nullptr) {
2615     // Called from unattached JVMCI shared library thread
2616     return false;
2617   }
2618   if (thread->jni_environment() == env) {
2619     C2V_BLOCK(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject))
2620     JVMCITraceMark jtm("isCurrentThreadAttached");
2621     requireJVMCINativeLibrary(JVMCI_CHECK_0);
2622     JVMCIRuntime* runtime = thread->libjvmci_runtime();
2623     if (runtime == nullptr || !runtime->has_shared_library_javavm()) {
2624       JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in isCurrentThreadAttached");
2625     }
2626     JNIEnv* peerEnv;
2627     return runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) == JNI_OK;
2628   }
2629   return true;
2630 C2V_END
2631 
2632 C2V_VMENTRY_PREFIX(jlong, getCurrentJavaThread, (JNIEnv* env, jobject c2vm))
2633   if (thread == nullptr) {
2634     // Called from unattached JVMCI shared library thread
2635     return 0L;
2636   }
2637   return (jlong) p2i(thread);
2638 C2V_END
2639 
2640 // Attaches a thread started in a JVMCI shared library to a JavaThread and JVMCI runtime.
2641 static void attachSharedLibraryThread(JNIEnv* env, jbyteArray name, jboolean as_daemon) {
2642   JavaVM* javaVM = nullptr;
2643   jint res = env->GetJavaVM(&javaVM);
2644   if (res != JNI_OK) {
2645     JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Error getting shared library JavaVM from shared library JNIEnv: %d", res));
2646   }
2647   extern struct JavaVM_ main_vm;
2648   JNIEnv* hotspotEnv;
2649 
2650   int name_len = env->GetArrayLength(name);
2651   char name_buf[64]; // Cannot use Resource heap as it requires a current thread
2652   int to_copy = MIN2(name_len, (int) sizeof(name_buf) - 1);
2653   env->GetByteArrayRegion(name, 0, to_copy, (jbyte*) name_buf);
2654   name_buf[to_copy] = '\0';
2655   JavaVMAttachArgs attach_args;
2656   attach_args.version = JNI_VERSION_1_2;
2657   attach_args.name = name_buf;
2658   attach_args.group = nullptr;
2659   res = as_daemon ? main_vm.AttachCurrentThreadAsDaemon((void**)&hotspotEnv, &attach_args) :
2660                     main_vm.AttachCurrentThread((void**)&hotspotEnv, &attach_args);
2661   if (res != JNI_OK) {
2662     JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Trying to attach thread returned %d", res));
2663   }
2664   JavaThread* thread = JavaThread::thread_from_jni_environment(hotspotEnv);
2665   const char* attach_error;
2666   {
2667     // Transition to VM
2668     JVMCI_VM_ENTRY_MARK
2669     attach_error = JVMCIRuntime::attach_shared_library_thread(thread, javaVM);
2670     // Transition back to Native
2671   }
2672   if (attach_error != nullptr) {
2673     JNI_THROW("attachCurrentThread", InternalError, attach_error);
2674   }
2675 }
2676 
2677 C2V_VMENTRY_PREFIX(jboolean, attachCurrentThread, (JNIEnv* env, jobject c2vm, jbyteArray name, jboolean as_daemon, jlongArray javaVM_info))
2678   if (thread == nullptr) {
2679     attachSharedLibraryThread(env, name, as_daemon);
2680     return true;
2681   }
2682   if (thread->jni_environment() == env) {
2683     // Called from HotSpot
2684     C2V_BLOCK(jboolean, attachCurrentThread, (JNIEnv* env, jobject, jboolean))
2685     JVMCITraceMark jtm("attachCurrentThread");
2686     requireJVMCINativeLibrary(JVMCI_CHECK_0);
2687 
2688     JVMCIRuntime* runtime = JVMCI::compiler_runtime(thread);
2689     JNIEnv* peerJNIEnv;
2690     if (runtime->has_shared_library_javavm()) {
2691       if (runtime->GetEnv(thread, (void**)&peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) {
2692         // Already attached
2693         runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0);
2694         return false;
2695       }
2696     }
2697 
2698     {
2699       // Ensure the JVMCI shared library runtime is initialized.
2700       PEER_JVMCIENV_FROM_THREAD(THREAD, false);
2701       PEER_JVMCIENV->check_init(JVMCI_CHECK_0);
2702 
2703       HandleMark hm(thread);
2704       JVMCIObject receiver = runtime->get_HotSpotJVMCIRuntime(PEER_JVMCIENV);
2705       if (PEER_JVMCIENV->has_pending_exception()) {
2706         PEER_JVMCIENV->describe_pending_exception(tty);
2707       }
2708       char* sl_path;
2709       if (JVMCI::get_shared_library(sl_path, false) == nullptr) {
2710         JVMCI_THROW_MSG_0(InternalError, "Error initializing JVMCI runtime");
2711       }
2712     }
2713 
2714     JavaVMAttachArgs attach_args;
2715     attach_args.version = JNI_VERSION_1_2;
2716     attach_args.name = const_cast<char*>(thread->name());
2717     attach_args.group = nullptr;
2718     if (runtime->GetEnv(thread, (void**) &peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) {
2719       return false;
2720     }
2721     jint res = as_daemon ? runtime->AttachCurrentThreadAsDaemon(thread, (void**) &peerJNIEnv, &attach_args) :
2722                            runtime->AttachCurrentThread(thread, (void**) &peerJNIEnv, &attach_args);
2723 
2724     if (res == JNI_OK) {
2725       guarantee(peerJNIEnv != nullptr, "must be");
2726       runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0);
2727       JVMCI_event_1("attached to JavaVM[%d] for JVMCI runtime %d", runtime->get_shared_library_javavm_id(), runtime->id());
2728       return true;
2729     }
2730     JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, attach_args.name));
2731   }
2732   // Called from JVMCI shared library
2733   return false;
2734 C2V_END
2735 
2736 C2V_VMENTRY_PREFIX(jboolean, detachCurrentThread, (JNIEnv* env, jobject c2vm, jboolean release))
2737   if (thread == nullptr) {
2738     // Called from unattached JVMCI shared library thread
2739     JNI_THROW_("detachCurrentThread", IllegalStateException, "Cannot detach non-attached thread", false);
2740   }
2741   if (thread->jni_environment() == env) {
2742     // Called from HotSpot
2743     C2V_BLOCK(void, detachCurrentThread, (JNIEnv* env, jobject))
2744     JVMCITraceMark jtm("detachCurrentThread");
2745     requireJVMCINativeLibrary(JVMCI_CHECK_0);
2746     requireInHotSpot("detachCurrentThread", JVMCI_CHECK_0);
2747     JVMCIRuntime* runtime = thread->libjvmci_runtime();
2748     if (runtime == nullptr || !runtime->has_shared_library_javavm()) {
2749       JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in detachCurrentThread");
2750     }
2751     JNIEnv* peerEnv;
2752 
2753     if (runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) != JNI_OK) {
2754       JVMCI_THROW_MSG_0(IllegalStateException, err_msg("Cannot detach non-attached thread: %s", thread->name()));
2755     }
2756     jint res = runtime->DetachCurrentThread(thread);
2757     if (res != JNI_OK) {
2758       JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, thread->name()));
2759     }
2760     JVMCI_event_1("detached from JavaVM[%d] for JVMCI runtime %d",
2761         runtime->get_shared_library_javavm_id(), runtime->id());
2762     if (release) {
2763       return runtime->detach_thread(thread, "user thread detach");
2764     }
2765   } else {
2766     // Called from attached JVMCI shared library thread
2767     if (release) {
2768       JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread cannot release JVMCI shared library JavaVM", false);
2769     }
2770     JVMCIRuntime* runtime = thread->libjvmci_runtime();
2771     if (runtime == nullptr) {
2772       JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread should have a JVMCI runtime", false);
2773     }
2774     {
2775       // Transition to VM
2776       C2V_BLOCK(jboolean, detachCurrentThread, (JNIEnv* env, jobject))
2777       // Cannot destroy shared library JavaVM as we're about to return to it.
2778       runtime->detach_thread(thread, "shared library thread detach", false);
2779       JVMCI_event_1("detaching JVMCI shared library thread from HotSpot JavaVM");
2780       // Transition back to Native
2781     }
2782     extern struct JavaVM_ main_vm;
2783     jint res = main_vm.DetachCurrentThread();
2784     if (res != JNI_OK) {
2785       JNI_THROW_("detachCurrentThread", InternalError, "Cannot detach non-attached thread", false);
2786     }
2787   }
2788   return false;
2789 C2V_END
2790 
2791 C2V_VMENTRY_0(jlong, translate, (JNIEnv* env, jobject, jobject obj_handle, jboolean callPostTranslation))
2792   requireJVMCINativeLibrary(JVMCI_CHECK_0);
2793   if (obj_handle == nullptr) {
2794     return 0L;
2795   }
2796   PEER_JVMCIENV_FROM_THREAD(THREAD, !JVMCIENV->is_hotspot());
2797   CompilerThreadCanCallJava canCallJava(thread, PEER_JVMCIENV->is_hotspot());
2798   PEER_JVMCIENV->check_init(JVMCI_CHECK_0);
2799 
2800   JVMCIEnv* thisEnv = JVMCIENV;
2801   JVMCIObject obj = thisEnv->wrap(obj_handle);
2802   JVMCIObject result;
2803   if (thisEnv->isa_HotSpotResolvedJavaMethodImpl(obj)) {
2804     methodHandle method(THREAD, thisEnv->asMethod(obj));
2805     result = PEER_JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_0);
2806   } else if (thisEnv->isa_HotSpotResolvedObjectTypeImpl(obj)) {
2807     Klass* klass = thisEnv->asKlass(obj);
2808     JVMCIKlassHandle klass_handle(THREAD);
2809     klass_handle = klass;
2810     result = PEER_JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_0);
2811   } else if (thisEnv->isa_HotSpotResolvedPrimitiveType(obj)) {
2812     BasicType type = JVMCIENV->kindToBasicType(JVMCIENV->get_HotSpotResolvedPrimitiveType_kind(obj), JVMCI_CHECK_0);
2813     result = PEER_JVMCIENV->get_jvmci_primitive_type(type);
2814   } else if (thisEnv->isa_IndirectHotSpotObjectConstantImpl(obj) ||
2815              thisEnv->isa_DirectHotSpotObjectConstantImpl(obj)) {
2816     Handle constant = thisEnv->asConstant(obj, JVMCI_CHECK_0);
2817     result = PEER_JVMCIENV->get_object_constant(constant());
2818   } else if (thisEnv->isa_HotSpotNmethod(obj)) {
2819     if (PEER_JVMCIENV->is_hotspot()) {
2820       JVMCINMethodHandle nmethod_handle(THREAD);
2821       nmethod* nm = JVMCIENV->get_nmethod(obj, nmethod_handle);
2822       if (nm != nullptr) {
2823         JVMCINMethodData* data = nm->jvmci_nmethod_data();
2824         if (data != nullptr) {
2825           // Only the mirror in the HotSpot heap is accessible
2826           // through JVMCINMethodData
2827           oop nmethod_mirror = data->get_nmethod_mirror(nm, /* phantom_ref */ true);
2828           if (nmethod_mirror != nullptr) {
2829             result = HotSpotJVMCI::wrap(nmethod_mirror);
2830           }
2831         }
2832       }
2833     }
2834 
2835     if (result.is_null()) {
2836       JVMCIObject methodObject = thisEnv->get_HotSpotNmethod_method(obj);
2837       methodHandle mh(THREAD, thisEnv->asMethod(methodObject));
2838       jboolean isDefault = thisEnv->get_HotSpotNmethod_isDefault(obj);
2839       jlong compileIdSnapshot = thisEnv->get_HotSpotNmethod_compileIdSnapshot(obj);
2840       JVMCIObject name_string = thisEnv->get_InstalledCode_name(obj);
2841       const char* cstring = name_string.is_null() ? nullptr : thisEnv->as_utf8_string(name_string);
2842       // Create a new HotSpotNmethod instance in the peer runtime
2843       result = PEER_JVMCIENV->new_HotSpotNmethod(mh, cstring, isDefault, compileIdSnapshot, JVMCI_CHECK_0);
2844       JVMCINMethodHandle nmethod_handle(THREAD);
2845       nmethod* nm = JVMCIENV->get_nmethod(obj, nmethod_handle);
2846       if (result.is_null()) {
2847         // exception occurred (e.g. OOME) creating a new HotSpotNmethod
2848       } else if (nm == nullptr) {
2849         // nmethod must have been unloaded
2850       } else {
2851         // Link the new HotSpotNmethod to the nmethod
2852         PEER_JVMCIENV->initialize_installed_code(result, nm, JVMCI_CHECK_0);
2853         // Only non-default HotSpotNmethod instances in the HotSpot heap are tracked directly by the runtime.
2854         if (!isDefault && PEER_JVMCIENV->is_hotspot()) {
2855           JVMCINMethodData* data = nm->jvmci_nmethod_data();
2856           if (data == nullptr) {
2857             JVMCI_THROW_MSG_0(IllegalArgumentException, "Missing HotSpotNmethod data");
2858           }
2859           if (data->get_nmethod_mirror(nm, /* phantom_ref */ false) != nullptr) {
2860             JVMCI_THROW_MSG_0(IllegalArgumentException, "Cannot overwrite existing HotSpotNmethod mirror for nmethod");
2861           }
2862           oop nmethod_mirror = HotSpotJVMCI::resolve(result);
2863           data->set_nmethod_mirror(nm, nmethod_mirror);
2864         }
2865       }
2866     }
2867   } else {
2868     JVMCI_THROW_MSG_0(IllegalArgumentException,
2869                 err_msg("Cannot translate object of type: %s", thisEnv->klass_name(obj)));
2870   }
2871   if (callPostTranslation) {
2872     PEER_JVMCIENV->call_HotSpotJVMCIRuntime_postTranslation(result, JVMCI_CHECK_0);
2873   }
2874   // Propagate any exception that occurred while creating the translated object
2875   if (PEER_JVMCIENV->transfer_pending_exception(thread, thisEnv)) {
2876     return 0L;
2877   }
2878   return (jlong) PEER_JVMCIENV->make_global(result).as_jobject();
2879 C2V_END
2880 
2881 C2V_VMENTRY_NULL(jobject, unhand, (JNIEnv* env, jobject, jlong obj_handle))
2882   requireJVMCINativeLibrary(JVMCI_CHECK_NULL);
2883   if (obj_handle == 0L) {
2884     return nullptr;
2885   }
2886   jobject global_handle = (jobject) obj_handle;
2887   JVMCIObject global_handle_obj = JVMCIENV->wrap(global_handle);
2888   jobject result = JVMCIENV->make_local(global_handle_obj).as_jobject();
2889 
2890   JVMCIENV->destroy_global(global_handle_obj);
2891   return result;
2892 C2V_END
2893 
2894 C2V_VMENTRY(void, updateHotSpotNmethod, (JNIEnv* env, jobject, jobject code_handle))
2895   JVMCIObject code = JVMCIENV->wrap(code_handle);
2896   // Execute this operation for the side effect of updating the InstalledCode state
2897   JVMCINMethodHandle nmethod_handle(THREAD);
2898   JVMCIENV->get_nmethod(code, nmethod_handle);
2899 C2V_END
2900 
2901 C2V_VMENTRY_NULL(jbyteArray, getCode, (JNIEnv* env, jobject, jobject code_handle))
2902   JVMCIObject code = JVMCIENV->wrap(code_handle);
2903   CodeBlob* cb = JVMCIENV->get_code_blob(code);
2904   if (cb == nullptr) {
2905     return nullptr;
2906   }
2907   // Make a resource copy of code before the allocation causes a safepoint
2908   int code_size = cb->code_size();
2909   jbyte* code_bytes = NEW_RESOURCE_ARRAY(jbyte, code_size);
2910   memcpy(code_bytes, (jbyte*) cb->code_begin(), code_size);
2911 
2912   JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL);
2913   JVMCIENV->copy_bytes_from(code_bytes, result, 0, code_size);
2914   return JVMCIENV->get_jbyteArray(result);
2915 C2V_END
2916 
2917 C2V_VMENTRY_NULL(jobject, asReflectionExecutable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
2918   requireInHotSpot("asReflectionExecutable", JVMCI_CHECK_NULL);
2919   methodHandle m(THREAD, UNPACK_PAIR(Method, method));
2920   oop executable;
2921   if (m->is_object_initializer()) {
2922     executable = Reflection::new_constructor(m, CHECK_NULL);
2923   } else if (m->is_static_initializer()) {
2924     JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2925         "Cannot create java.lang.reflect.Method for class initializer");
2926   } else {
2927     executable = Reflection::new_method(m, false, CHECK_NULL);
2928   }
2929   return JNIHandles::make_local(THREAD, executable);
2930 C2V_END
2931 
2932 static InstanceKlass* check_field(Klass* klass, jint index, JVMCI_TRAPS) {
2933   if (!klass->is_instance_klass()) {
2934     JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2935         err_msg("Expected non-primitive type, got %s", klass->external_name()));
2936   }
2937   InstanceKlass* iklass = InstanceKlass::cast(klass);
2938   if (index < 0 || index > iklass->total_fields_count()) {
2939     JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2940         err_msg("Field index %d out of bounds for %s", index, klass->external_name()));
2941   }
2942   return iklass;
2943 }
2944 
2945 C2V_VMENTRY_NULL(jobject, asReflectionField, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jint index))
2946   requireInHotSpot("asReflectionField", JVMCI_CHECK_NULL);
2947   Klass* klass = UNPACK_PAIR(Klass, klass);
2948   InstanceKlass* iklass = check_field(klass, index, JVMCIENV);
2949   fieldDescriptor fd(iklass, index);
2950   oop reflected = Reflection::new_field(&fd, CHECK_NULL);
2951   return JNIHandles::make_local(THREAD, reflected);
2952 C2V_END
2953 
2954 static jbyteArray get_encoded_annotation_data(InstanceKlass* holder, AnnotationArray* annotations_array, bool for_class,
2955                                               jint filter_length, jlong filter_klass_pointers,
2956                                               JavaThread* THREAD, JVMCIEnv* JVMCIENV) {
2957   // Get a ConstantPool object for annotation parsing
2958   Handle jcp = reflect_ConstantPool::create(CHECK_NULL);
2959   reflect_ConstantPool::set_cp(jcp(), holder->constants());
2960 
2961   // load VMSupport
2962   Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport();
2963   Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK_NULL);
2964 
2965   InstanceKlass* vm_support = InstanceKlass::cast(k);
2966   if (vm_support->should_be_initialized()) {
2967     vm_support->initialize(CHECK_NULL);
2968   }
2969 
2970   typeArrayOop annotations_oop = Annotations::make_java_array(annotations_array, CHECK_NULL);
2971   typeArrayHandle annotations = typeArrayHandle(THREAD, annotations_oop);
2972 
2973   InstanceKlass** filter = filter_length == 1 ?
2974       (InstanceKlass**) &filter_klass_pointers:
2975       (InstanceKlass**) filter_klass_pointers;
2976   objArrayOop filter_oop = oopFactory::new_objArray(vmClasses::Class_klass(), filter_length, CHECK_NULL);
2977   objArrayHandle filter_classes(THREAD, filter_oop);
2978   for (int i = 0; i < filter_length; i++) {
2979     filter_classes->obj_at_put(i, filter[i]->java_mirror());
2980   }
2981 
2982   // invoke VMSupport.encodeAnnotations
2983   JavaValue result(T_OBJECT);
2984   JavaCallArguments args;
2985   args.push_oop(annotations);
2986   args.push_oop(Handle(THREAD, holder->java_mirror()));
2987   args.push_oop(jcp);
2988   args.push_int(for_class);
2989   args.push_oop(filter_classes);
2990   Symbol* signature = vmSymbols::encodeAnnotations_signature();
2991   JavaCalls::call_static(&result,
2992                          vm_support,
2993                          vmSymbols::encodeAnnotations_name(),
2994                          signature,
2995                          &args,
2996                          CHECK_NULL);
2997 
2998   oop res = result.get_oop();
2999   if (JVMCIENV->is_hotspot()) {
3000     return (jbyteArray) JNIHandles::make_local(THREAD, res);
3001   }
3002 
3003   typeArrayOop ba = typeArrayOop(res);
3004   int ba_len = ba->length();
3005   jbyte* ba_buf = NEW_RESOURCE_ARRAY_IN_THREAD_RETURN_NULL(THREAD, jbyte, ba_len);
3006   if (ba_buf == nullptr) {
3007     JVMCI_THROW_MSG_NULL(InternalError,
3008               err_msg("could not allocate %d bytes", ba_len));
3009 
3010   }
3011   memcpy(ba_buf, ba->byte_at_addr(0), ba_len);
3012   JVMCIPrimitiveArray ba_dest = JVMCIENV->new_byteArray(ba_len, JVMCI_CHECK_NULL);
3013   JVMCIENV->copy_bytes_from(ba_buf, ba_dest, 0, ba_len);
3014   return JVMCIENV->get_jbyteArray(ba_dest);
3015 }
3016 
3017 C2V_VMENTRY_NULL(jbyteArray, getEncodedClassAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass),
3018                  jobject filter, jint filter_length, jlong filter_klass_pointers))
3019   CompilerThreadCanCallJava canCallJava(thread, true); // Requires Java support
3020   InstanceKlass* holder = InstanceKlass::cast(UNPACK_PAIR(Klass, klass));
3021   return get_encoded_annotation_data(holder, holder->class_annotations(), true, filter_length, filter_klass_pointers, THREAD, JVMCIENV);
3022 C2V_END
3023 
3024 C2V_VMENTRY_NULL(jbyteArray, getEncodedExecutableAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(method),
3025                  jobject filter, jint filter_length, jlong filter_klass_pointers))
3026   CompilerThreadCanCallJava canCallJava(thread, true); // Requires Java support
3027   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
3028   return get_encoded_annotation_data(method->method_holder(), method->annotations(), false, filter_length, filter_klass_pointers, THREAD, JVMCIENV);
3029 C2V_END
3030 
3031 C2V_VMENTRY_NULL(jbyteArray, getEncodedFieldAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jint index,
3032                  jobject filter, jint filter_length, jlong filter_klass_pointers))
3033   CompilerThreadCanCallJava canCallJava(thread, true); // Requires Java support
3034   InstanceKlass* holder = check_field(InstanceKlass::cast(UNPACK_PAIR(Klass, klass)), index, JVMCIENV);
3035   fieldDescriptor fd(holder, index);
3036   return get_encoded_annotation_data(holder, fd.annotations(), false, filter_length, filter_klass_pointers, THREAD, JVMCIENV);
3037 C2V_END
3038 
3039 C2V_VMENTRY_NULL(jobjectArray, getFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address, jobjectArray current))
3040   FailedSpeculation* head = *((FailedSpeculation**)(address) failed_speculations_address);
3041   int result_length = 0;
3042   for (FailedSpeculation* fs = head; fs != nullptr; fs = fs->next()) {
3043     result_length++;
3044   }
3045   int current_length = 0;
3046   JVMCIObjectArray current_array = nullptr;
3047   if (current != nullptr) {
3048     current_array = JVMCIENV->wrap(current);
3049     current_length = JVMCIENV->get_length(current_array);
3050     if (current_length == result_length) {
3051       // No new failures
3052       return current;
3053     }
3054   }
3055   JVMCIObjectArray result = JVMCIENV->new_byte_array_array(result_length, JVMCI_CHECK_NULL);
3056   int result_index = 0;
3057   for (FailedSpeculation* fs = head; result_index < result_length; fs = fs->next()) {
3058     assert(fs != nullptr, "npe");
3059     JVMCIPrimitiveArray entry;
3060     if (result_index < current_length) {
3061       entry = (JVMCIPrimitiveArray) JVMCIENV->get_object_at(current_array, result_index);
3062     } else {
3063       entry = JVMCIENV->new_byteArray(fs->data_len(), JVMCI_CHECK_NULL);
3064       JVMCIENV->copy_bytes_from((jbyte*) fs->data(), entry, 0, fs->data_len());
3065     }
3066     JVMCIENV->put_object_at(result, result_index++, entry);
3067   }
3068   return JVMCIENV->get_jobjectArray(result);
3069 C2V_END
3070 
3071 C2V_VMENTRY_0(jlong, getFailedSpeculationsAddress, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
3072   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
3073   MethodData* method_data = get_profiling_method_data(method, CHECK_0);
3074   return (jlong) method_data->get_failed_speculations_address();
3075 C2V_END
3076 
3077 C2V_VMENTRY(void, releaseFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address))
3078   FailedSpeculation::free_failed_speculations((FailedSpeculation**)(address) failed_speculations_address);
3079 C2V_END
3080 
3081 C2V_VMENTRY_0(jboolean, addFailedSpeculation, (JNIEnv* env, jobject, jlong failed_speculations_address, jbyteArray speculation_obj))
3082   JVMCIPrimitiveArray speculation_handle = JVMCIENV->wrap(speculation_obj);
3083   int speculation_len = JVMCIENV->get_length(speculation_handle);
3084   char* speculation = NEW_RESOURCE_ARRAY(char, speculation_len);
3085   JVMCIENV->copy_bytes_to(speculation_handle, (jbyte*) speculation, 0, speculation_len);
3086   return FailedSpeculation::add_failed_speculation(nullptr, (FailedSpeculation**)(address) failed_speculations_address, (address) speculation, speculation_len);
3087 C2V_END
3088 
3089 C2V_VMENTRY(void, callSystemExit, (JNIEnv* env, jobject, jint status))
3090   if (!JVMCIENV->is_hotspot()) {
3091     // It's generally not safe to call Java code before the module system is initialized
3092     if (!Universe::is_module_initialized()) {
3093       JVMCI_event_1("callSystemExit(%d) before Universe::is_module_initialized() -> direct VM exit", status);
3094       vm_exit_during_initialization();
3095     }
3096   }
3097   CompilerThreadCanCallJava canCallJava(thread, true);
3098   JavaValue result(T_VOID);
3099   JavaCallArguments jargs(1);
3100   jargs.push_int(status);
3101   JavaCalls::call_static(&result,
3102                        vmClasses::System_klass(),
3103                        vmSymbols::exit_method_name(),
3104                        vmSymbols::int_void_signature(),
3105                        &jargs,
3106                        CHECK);
3107 C2V_END
3108 
3109 C2V_VMENTRY_0(jlong, ticksNow, (JNIEnv* env, jobject))
3110   return CompilerEvent::ticksNow();
3111 C2V_END
3112 
3113 C2V_VMENTRY_0(jint, registerCompilerPhase, (JNIEnv* env, jobject, jstring jphase_name))
3114 #if INCLUDE_JFR
3115   JVMCIObject phase_name = JVMCIENV->wrap(jphase_name);
3116   const char *name = JVMCIENV->as_utf8_string(phase_name);
3117   return CompilerEvent::PhaseEvent::get_phase_id(name, true, true, true);
3118 #else
3119   return -1;
3120 #endif // !INCLUDE_JFR
3121 C2V_END
3122 
3123 C2V_VMENTRY(void, notifyCompilerPhaseEvent, (JNIEnv* env, jobject, jlong startTime, jint phase, jint compileId, jint level))
3124   EventCompilerPhase event(UNTIMED);
3125   if (event.should_commit()) {
3126     CompilerEvent::PhaseEvent::post(event, startTime, phase, compileId, level);
3127   }
3128 C2V_END
3129 
3130 C2V_VMENTRY(void, notifyCompilerInliningEvent, (JNIEnv* env, jobject, jint compileId, ARGUMENT_PAIR(caller), ARGUMENT_PAIR(callee), jboolean succeeded, jstring jmessage, jint bci))
3131   EventCompilerInlining event;
3132   if (event.should_commit()) {
3133     Method* caller = UNPACK_PAIR(Method, caller);
3134     Method* callee = UNPACK_PAIR(Method, callee);
3135     JVMCIObject message = JVMCIENV->wrap(jmessage);
3136     CompilerEvent::InlineEvent::post(event, compileId, caller, callee, succeeded, JVMCIENV->as_utf8_string(message), bci);
3137   }
3138 C2V_END
3139 
3140 C2V_VMENTRY(void, setThreadLocalObject, (JNIEnv* env, jobject, jint id, jobject value))
3141   requireInHotSpot("setThreadLocalObject", JVMCI_CHECK);
3142   if (id == 0) {
3143     thread->set_jvmci_reserved_oop0(JNIHandles::resolve(value));
3144     return;
3145   }
3146   THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
3147             err_msg("%d is not a valid thread local id", id));
3148 C2V_END
3149 
3150 C2V_VMENTRY_NULL(jobject, getThreadLocalObject, (JNIEnv* env, jobject, jint id))
3151   requireInHotSpot("getThreadLocalObject", JVMCI_CHECK_NULL);
3152   if (id == 0) {
3153     return JNIHandles::make_local(thread->get_jvmci_reserved_oop0());
3154   }
3155   THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(),
3156                  err_msg("%d is not a valid thread local id", id));
3157 C2V_END
3158 
3159 C2V_VMENTRY(void, setThreadLocalLong, (JNIEnv* env, jobject, jint id, jlong value))
3160   requireInHotSpot("setThreadLocalLong", JVMCI_CHECK);
3161   if (id == 0) {
3162     thread->set_jvmci_reserved0(value);
3163   } else if (id == 1) {
3164     thread->set_jvmci_reserved1(value);
3165   } else {
3166     THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
3167               err_msg("%d is not a valid thread local id", id));
3168   }
3169 C2V_END
3170 
3171 C2V_VMENTRY_0(jlong, getThreadLocalLong, (JNIEnv* env, jobject, jint id))
3172   requireInHotSpot("getThreadLocalLong", JVMCI_CHECK_0);
3173   if (id == 0) {
3174     return thread->get_jvmci_reserved0();
3175   } else if (id == 1) {
3176     return thread->get_jvmci_reserved1();
3177   } else {
3178     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
3179                 err_msg("%d is not a valid thread local id", id));
3180   }
3181 C2V_END
3182 
3183 C2V_VMENTRY(void, getOopMapAt, (JNIEnv* env, jobject, ARGUMENT_PAIR(method),
3184                  jint bci, jlongArray oop_map_handle))
3185   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
3186   if (bci < 0 || bci >= method->code_size()) {
3187     JVMCI_THROW_MSG(IllegalArgumentException,
3188                 err_msg("bci %d is out of bounds [0 .. %d)", bci, method->code_size()));
3189   }
3190   InterpreterOopMap mask;
3191   OopMapCache::compute_one_oop_map(method, bci, &mask);
3192   if (!mask.has_valid_mask()) {
3193     JVMCI_THROW_MSG(IllegalArgumentException, err_msg("bci %d is not valid", bci));
3194   }
3195   if (mask.number_of_entries() == 0) {
3196     return;
3197   }
3198 
3199   int nslots = method->max_locals() + method->max_stack();
3200   int nwords = ((nslots - 1) / 64) + 1;
3201   JVMCIPrimitiveArray oop_map = JVMCIENV->wrap(oop_map_handle);
3202   int oop_map_len = JVMCIENV->get_length(oop_map);
3203   if (nwords > oop_map_len) {
3204     JVMCI_THROW_MSG(IllegalArgumentException,
3205                 err_msg("oop map too short: %d > %d", nwords, oop_map_len));
3206   }
3207 
3208   jlong* oop_map_buf = NEW_RESOURCE_ARRAY_IN_THREAD_RETURN_NULL(THREAD, jlong, nwords);
3209   if (oop_map_buf == nullptr) {
3210     JVMCI_THROW_MSG(InternalError, err_msg("could not allocate %d longs", nwords));
3211   }
3212   for (int i = 0; i < nwords; i++) {
3213     oop_map_buf[i] = 0L;
3214   }
3215 
3216   BitMapView oop_map_view = BitMapView((BitMap::bm_word_t*) oop_map_buf, nwords * BitsPerLong);
3217   for (int i = 0; i < nslots; i++) {
3218     if (mask.is_oop(i)) {
3219       oop_map_view.set_bit(i);
3220     }
3221   }
3222   JVMCIENV->copy_longs_from((jlong*)oop_map_buf, oop_map, 0, nwords);
3223 C2V_END
3224 
3225 C2V_VMENTRY_0(jint, getCompilationActivityMode, (JNIEnv* env, jobject))
3226   return CompileBroker::get_compilation_activity_mode();
3227 }
3228 
3229 #define CC (char*)  /*cast a literal from (const char*)*/
3230 #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &(c2v_ ## f))
3231 
3232 #define STRING                  "Ljava/lang/String;"
3233 #define OBJECT                  "Ljava/lang/Object;"
3234 #define CLASS                   "Ljava/lang/Class;"
3235 #define OBJECTCONSTANT          "Ljdk/vm/ci/hotspot/HotSpotObjectConstantImpl;"
3236 #define EXECUTABLE              "Ljava/lang/reflect/Executable;"
3237 #define STACK_TRACE_ELEMENT     "Ljava/lang/StackTraceElement;"
3238 #define INSTALLED_CODE          "Ljdk/vm/ci/code/InstalledCode;"
3239 #define BYTECODE_FRAME          "Ljdk/vm/ci/code/BytecodeFrame;"
3240 #define JAVACONSTANT            "Ljdk/vm/ci/meta/JavaConstant;"
3241 #define INSPECTED_FRAME_VISITOR "Ljdk/vm/ci/code/stack/InspectedFrameVisitor;"
3242 #define RESOLVED_METHOD         "Ljdk/vm/ci/meta/ResolvedJavaMethod;"
3243 #define FIELDINFO               "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl$FieldInfo;"
3244 #define HS_RESOLVED_TYPE        "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaType;"
3245 #define HS_INSTALLED_CODE       "Ljdk/vm/ci/hotspot/HotSpotInstalledCode;"
3246 #define HS_NMETHOD              "Ljdk/vm/ci/hotspot/HotSpotNmethod;"
3247 #define HS_COMPILED_CODE        "Ljdk/vm/ci/hotspot/HotSpotCompiledCode;"
3248 #define HS_CONFIG               "Ljdk/vm/ci/hotspot/HotSpotVMConfig;"
3249 #define HS_STACK_FRAME_REF      "Ljdk/vm/ci/hotspot/HotSpotStackFrameReference;"
3250 #define HS_SPECULATION_LOG      "Ljdk/vm/ci/hotspot/HotSpotSpeculationLog;"
3251 #define REFLECTION_EXECUTABLE   "Ljava/lang/reflect/Executable;"
3252 #define REFLECTION_FIELD        "Ljava/lang/reflect/Field;"
3253 
3254 // Types wrapping VM pointers. The ...2 macro is for a pair: (wrapper, pointer)
3255 #define HS_METHOD               "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;"
3256 #define HS_METHOD2              "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;J"
3257 #define HS_KLASS                "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;"
3258 #define HS_KLASS2               "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;J"
3259 #define HS_CONSTANT_POOL        "Ljdk/vm/ci/hotspot/HotSpotConstantPool;"
3260 #define HS_CONSTANT_POOL2       "Ljdk/vm/ci/hotspot/HotSpotConstantPool;J"
3261 
3262 JNINativeMethod CompilerToVM::methods[] = {
3263   {CC "getBytecode",                                  CC "(" HS_METHOD2 ")[B",                                                              FN_PTR(getBytecode)},
3264   {CC "getExceptionTableStart",                       CC "(" HS_METHOD2 ")J",                                                               FN_PTR(getExceptionTableStart)},
3265   {CC "getExceptionTableLength",                      CC "(" HS_METHOD2 ")I",                                                               FN_PTR(getExceptionTableLength)},
3266   {CC "findUniqueConcreteMethod",                     CC "(" HS_KLASS2 HS_METHOD2 ")" HS_METHOD,                                            FN_PTR(findUniqueConcreteMethod)},
3267   {CC "getImplementor",                               CC "(" HS_KLASS2 ")" HS_KLASS,                                                        FN_PTR(getImplementor)},
3268   {CC "getStackTraceElement",                         CC "(" HS_METHOD2 "I)" STACK_TRACE_ELEMENT,                                           FN_PTR(getStackTraceElement)},
3269   {CC "methodIsIgnoredBySecurityStackWalk",           CC "(" HS_METHOD2 ")Z",                                                               FN_PTR(methodIsIgnoredBySecurityStackWalk)},
3270   {CC "setNotInlinableOrCompilable",                  CC "(" HS_METHOD2 ")V",                                                               FN_PTR(setNotInlinableOrCompilable)},
3271   {CC "isCompilable",                                 CC "(" HS_METHOD2 ")Z",                                                               FN_PTR(isCompilable)},
3272   {CC "hasNeverInlineDirective",                      CC "(" HS_METHOD2 ")Z",                                                               FN_PTR(hasNeverInlineDirective)},
3273   {CC "shouldInlineMethod",                           CC "(" HS_METHOD2 ")Z",                                                               FN_PTR(shouldInlineMethod)},
3274   {CC "lookupType",                                   CC "(" STRING HS_KLASS2 "IZ)" HS_RESOLVED_TYPE,                                       FN_PTR(lookupType)},
3275   {CC "lookupJClass",                                 CC "(J)" HS_RESOLVED_TYPE,                                                            FN_PTR(lookupJClass)},
3276   {CC "getJObjectValue",                              CC "(" OBJECTCONSTANT ")J",                                                           FN_PTR(getJObjectValue)},
3277   {CC "getArrayType",                                 CC "(C" HS_KLASS2 ")" HS_KLASS,                                                       FN_PTR(getArrayType)},
3278   {CC "lookupClass",                                  CC "(" CLASS ")" HS_RESOLVED_TYPE,                                                    FN_PTR(lookupClass)},
3279   {CC "lookupNameInPool",                             CC "(" HS_CONSTANT_POOL2 "II)" STRING,                                                FN_PTR(lookupNameInPool)},
3280   {CC "lookupNameAndTypeRefIndexInPool",              CC "(" HS_CONSTANT_POOL2 "II)I",                                                      FN_PTR(lookupNameAndTypeRefIndexInPool)},
3281   {CC "lookupSignatureInPool",                        CC "(" HS_CONSTANT_POOL2 "II)" STRING,                                                FN_PTR(lookupSignatureInPool)},
3282   {CC "lookupKlassRefIndexInPool",                    CC "(" HS_CONSTANT_POOL2 "II)I",                                                      FN_PTR(lookupKlassRefIndexInPool)},
3283   {CC "lookupKlassInPool",                            CC "(" HS_CONSTANT_POOL2 "I)Ljava/lang/Object;",                                      FN_PTR(lookupKlassInPool)},
3284   {CC "lookupAppendixInPool",                         CC "(" HS_CONSTANT_POOL2 "II)" OBJECTCONSTANT,                                        FN_PTR(lookupAppendixInPool)},
3285   {CC "lookupMethodInPool",                           CC "(" HS_CONSTANT_POOL2 "IB" HS_METHOD2 ")" HS_METHOD,                               FN_PTR(lookupMethodInPool)},
3286   {CC "lookupConstantInPool",                         CC "(" HS_CONSTANT_POOL2 "IZ)" JAVACONSTANT,                                          FN_PTR(lookupConstantInPool)},
3287   {CC "resolveBootstrapMethod",                       CC "(" HS_CONSTANT_POOL2 "I)[" OBJECT,                                                FN_PTR(resolveBootstrapMethod)},
3288   {CC "bootstrapArgumentIndexAt",                     CC "(" HS_CONSTANT_POOL2 "II)I",                                                      FN_PTR(bootstrapArgumentIndexAt)},
3289   {CC "getUncachedStringInPool",                      CC "(" HS_CONSTANT_POOL2 "I)" JAVACONSTANT,                                           FN_PTR(getUncachedStringInPool)},
3290   {CC "resolveTypeInPool",                            CC "(" HS_CONSTANT_POOL2 "I)" HS_KLASS,                                               FN_PTR(resolveTypeInPool)},
3291   {CC "resolveFieldInPool",                           CC "(" HS_CONSTANT_POOL2 "I" HS_METHOD2 "B[I)" HS_KLASS,                              FN_PTR(resolveFieldInPool)},
3292   {CC "decodeFieldIndexToCPIndex",                    CC "(" HS_CONSTANT_POOL2 "I)I",                                                       FN_PTR(decodeFieldIndexToCPIndex)},
3293   {CC "decodeMethodIndexToCPIndex",                   CC "(" HS_CONSTANT_POOL2 "I)I",                                                       FN_PTR(decodeMethodIndexToCPIndex)},
3294   {CC "decodeIndyIndexToCPIndex",                     CC "(" HS_CONSTANT_POOL2 "IZ)I",                                                      FN_PTR(decodeIndyIndexToCPIndex)},
3295   {CC "resolveInvokeHandleInPool",                    CC "(" HS_CONSTANT_POOL2 "I)V",                                                       FN_PTR(resolveInvokeHandleInPool)},
3296   {CC "isResolvedInvokeHandleInPool",                 CC "(" HS_CONSTANT_POOL2 "II)I",                                                      FN_PTR(isResolvedInvokeHandleInPool)},
3297   {CC "resolveMethod",                                CC "(" HS_KLASS2 HS_METHOD2 HS_KLASS2 ")" HS_METHOD,                                  FN_PTR(resolveMethod)},
3298   {CC "getSignaturePolymorphicHolders",               CC "()[" STRING,                                                                      FN_PTR(getSignaturePolymorphicHolders)},
3299   {CC "getVtableIndexForInterfaceMethod",             CC "(" HS_KLASS2 HS_METHOD2 ")I",                                                     FN_PTR(getVtableIndexForInterfaceMethod)},
3300   {CC "getClassInitializer",                          CC "(" HS_KLASS2 ")" HS_METHOD,                                                       FN_PTR(getClassInitializer)},
3301   {CC "hasFinalizableSubclass",                       CC "(" HS_KLASS2 ")Z",                                                                FN_PTR(hasFinalizableSubclass)},
3302   {CC "getMaxCallTargetOffset",                       CC "(J)J",                                                                            FN_PTR(getMaxCallTargetOffset)},
3303   {CC "asResolvedJavaMethod",                         CC "(" EXECUTABLE ")" HS_METHOD,                                                      FN_PTR(asResolvedJavaMethod)},
3304   {CC "getResolvedJavaMethod",                        CC "(" OBJECTCONSTANT "J)" HS_METHOD,                                                 FN_PTR(getResolvedJavaMethod)},
3305   {CC "getConstantPool",                              CC "(" OBJECT "JZ)" HS_CONSTANT_POOL,                                                 FN_PTR(getConstantPool)},
3306   {CC "getResolvedJavaType0",                         CC "(Ljava/lang/Object;JZ)" HS_KLASS,                                                 FN_PTR(getResolvedJavaType0)},
3307   {CC "readConfiguration",                            CC "()[" OBJECT,                                                                      FN_PTR(readConfiguration)},
3308   {CC "installCode0",                                 CC "(JJZ" HS_COMPILED_CODE "[" OBJECT INSTALLED_CODE "J[B)I",                         FN_PTR(installCode0)},
3309   {CC "getInstallCodeFlags",                          CC "()I",                                                                             FN_PTR(getInstallCodeFlags)},
3310   {CC "resetCompilationStatistics",                   CC "()V",                                                                             FN_PTR(resetCompilationStatistics)},
3311   {CC "disassembleCodeBlob",                          CC "(" INSTALLED_CODE ")" STRING,                                                     FN_PTR(disassembleCodeBlob)},
3312   {CC "executeHotSpotNmethod",                        CC "([" OBJECT HS_NMETHOD ")" OBJECT,                                                 FN_PTR(executeHotSpotNmethod)},
3313   {CC "getLineNumberTable",                           CC "(" HS_METHOD2 ")[J",                                                              FN_PTR(getLineNumberTable)},
3314   {CC "getLocalVariableTableStart",                   CC "(" HS_METHOD2 ")J",                                                               FN_PTR(getLocalVariableTableStart)},
3315   {CC "getLocalVariableTableLength",                  CC "(" HS_METHOD2 ")I",                                                               FN_PTR(getLocalVariableTableLength)},
3316   {CC "reprofile",                                    CC "(" HS_METHOD2 ")V",                                                               FN_PTR(reprofile)},
3317   {CC "invalidateHotSpotNmethod",                     CC "(" HS_NMETHOD "Z)V",                                                              FN_PTR(invalidateHotSpotNmethod)},
3318   {CC "collectCounters",                              CC "()[J",                                                                            FN_PTR(collectCounters)},
3319   {CC "getCountersSize",                              CC "()I",                                                                             FN_PTR(getCountersSize)},
3320   {CC "setCountersSize",                              CC "(I)Z",                                                                            FN_PTR(setCountersSize)},
3321   {CC "allocateCompileId",                            CC "(" HS_METHOD2 "I)I",                                                              FN_PTR(allocateCompileId)},
3322   {CC "isMature",                                     CC "(J)Z",                                                                            FN_PTR(isMature)},
3323   {CC "hasCompiledCodeForOSR",                        CC "(" HS_METHOD2 "II)Z",                                                             FN_PTR(hasCompiledCodeForOSR)},
3324   {CC "getSymbol",                                    CC "(J)" STRING,                                                                      FN_PTR(getSymbol)},
3325   {CC "getSignatureName",                             CC "(J)" STRING,                                                                      FN_PTR(getSignatureName)},
3326   {CC "iterateFrames",                                CC "([" RESOLVED_METHOD "[" RESOLVED_METHOD "I" INSPECTED_FRAME_VISITOR ")" OBJECT,   FN_PTR(iterateFrames)},
3327   {CC "materializeVirtualObjects",                    CC "(" HS_STACK_FRAME_REF "Z)V",                                                      FN_PTR(materializeVirtualObjects)},
3328   {CC "shouldDebugNonSafepoints",                     CC "()Z",                                                                             FN_PTR(shouldDebugNonSafepoints)},
3329   {CC "writeDebugOutput",                             CC "(JIZ)V",                                                                          FN_PTR(writeDebugOutput)},
3330   {CC "flushDebugOutput",                             CC "()V",                                                                             FN_PTR(flushDebugOutput)},
3331   {CC "methodDataProfileDataSize",                    CC "(JI)I",                                                                           FN_PTR(methodDataProfileDataSize)},
3332   {CC "methodDataExceptionSeen",                      CC "(JI)I",                                                                           FN_PTR(methodDataExceptionSeen)},
3333   {CC "interpreterFrameSize",                         CC "(" BYTECODE_FRAME ")I",                                                           FN_PTR(interpreterFrameSize)},
3334   {CC "compileToBytecode",                            CC "(" OBJECTCONSTANT ")V",                                                           FN_PTR(compileToBytecode)},
3335   {CC "getFlagValue",                                 CC "(" STRING ")" OBJECT,                                                             FN_PTR(getFlagValue)},
3336   {CC "getInterfaces",                                CC "(" HS_KLASS2 ")[" HS_KLASS,                                                       FN_PTR(getInterfaces)},
3337   {CC "getComponentType",                             CC "(" HS_KLASS2 ")" HS_RESOLVED_TYPE,                                                FN_PTR(getComponentType)},
3338   {CC "ensureInitialized",                            CC "(" HS_KLASS2 ")V",                                                                FN_PTR(ensureInitialized)},
3339   {CC "ensureLinked",                                 CC "(" HS_KLASS2 ")V",                                                                FN_PTR(ensureLinked)},
3340   {CC "getIdentityHashCode",                          CC "(" OBJECTCONSTANT ")I",                                                           FN_PTR(getIdentityHashCode)},
3341   {CC "isInternedString",                             CC "(" OBJECTCONSTANT ")Z",                                                           FN_PTR(isInternedString)},
3342   {CC "unboxPrimitive",                               CC "(" OBJECTCONSTANT ")" OBJECT,                                                     FN_PTR(unboxPrimitive)},
3343   {CC "boxPrimitive",                                 CC "(" OBJECT ")" OBJECTCONSTANT,                                                     FN_PTR(boxPrimitive)},
3344   {CC "getDeclaredConstructors",                      CC "(" HS_KLASS2 ")[" RESOLVED_METHOD,                                                FN_PTR(getDeclaredConstructors)},
3345   {CC "getDeclaredMethods",                           CC "(" HS_KLASS2 ")[" RESOLVED_METHOD,                                                FN_PTR(getDeclaredMethods)},
3346   {CC "getDeclaredFieldsInfo",                        CC "(" HS_KLASS2 ")[" FIELDINFO,                                                      FN_PTR(getDeclaredFieldsInfo)},
3347   {CC "readStaticFieldValue",                         CC "(" HS_KLASS2 "JC)" JAVACONSTANT,                                                  FN_PTR(readStaticFieldValue)},
3348   {CC "readFieldValue",                               CC "(" OBJECTCONSTANT HS_KLASS2 "JC)" JAVACONSTANT,                                   FN_PTR(readFieldValue)},
3349   {CC "isInstance",                                   CC "(" HS_KLASS2 OBJECTCONSTANT ")Z",                                                 FN_PTR(isInstance)},
3350   {CC "isAssignableFrom",                             CC "(" HS_KLASS2 HS_KLASS2 ")Z",                                                      FN_PTR(isAssignableFrom)},
3351   {CC "isTrustedForIntrinsics",                       CC "(" HS_KLASS2 ")Z",                                                                FN_PTR(isTrustedForIntrinsics)},
3352   {CC "asJavaType",                                   CC "(" OBJECTCONSTANT ")" HS_RESOLVED_TYPE,                                           FN_PTR(asJavaType)},
3353   {CC "asString",                                     CC "(" OBJECTCONSTANT ")" STRING,                                                     FN_PTR(asString)},
3354   {CC "equals",                                       CC "(" OBJECTCONSTANT "J" OBJECTCONSTANT "J)Z",                                       FN_PTR(equals)},
3355   {CC "getJavaMirror",                                CC "(" HS_KLASS2 ")" OBJECTCONSTANT,                                                  FN_PTR(getJavaMirror)},
3356   {CC "getArrayLength",                               CC "(" OBJECTCONSTANT ")I",                                                           FN_PTR(getArrayLength)},
3357   {CC "readArrayElement",                             CC "(" OBJECTCONSTANT "I)Ljava/lang/Object;",                                         FN_PTR(readArrayElement)},
3358   {CC "arrayBaseOffset",                              CC "(C)I",                                                                            FN_PTR(arrayBaseOffset)},
3359   {CC "arrayIndexScale",                              CC "(C)I",                                                                            FN_PTR(arrayIndexScale)},
3360   {CC "clearOopHandle",                               CC "(J)V",                                                                            FN_PTR(clearOopHandle)},
3361   {CC "releaseClearedOopHandles",                     CC "()V",                                                                             FN_PTR(releaseClearedOopHandles)},
3362   {CC "registerNativeMethods",                        CC "(" CLASS ")[J",                                                                   FN_PTR(registerNativeMethods)},
3363   {CC "isCurrentThreadAttached",                      CC "()Z",                                                                             FN_PTR(isCurrentThreadAttached)},
3364   {CC "getCurrentJavaThread",                         CC "()J",                                                                             FN_PTR(getCurrentJavaThread)},
3365   {CC "attachCurrentThread",                          CC "([BZ[J)Z",                                                                        FN_PTR(attachCurrentThread)},
3366   {CC "detachCurrentThread",                          CC "(Z)Z",                                                                            FN_PTR(detachCurrentThread)},
3367   {CC "translate",                                    CC "(" OBJECT "Z)J",                                                                  FN_PTR(translate)},
3368   {CC "unhand",                                       CC "(J)" OBJECT,                                                                      FN_PTR(unhand)},
3369   {CC "updateHotSpotNmethod",                         CC "(" HS_NMETHOD ")V",                                                               FN_PTR(updateHotSpotNmethod)},
3370   {CC "getCode",                                      CC "(" HS_INSTALLED_CODE ")[B",                                                       FN_PTR(getCode)},
3371   {CC "asReflectionExecutable",                       CC "(" HS_METHOD2 ")" REFLECTION_EXECUTABLE,                                          FN_PTR(asReflectionExecutable)},
3372   {CC "asReflectionField",                            CC "(" HS_KLASS2 "I)" REFLECTION_FIELD,                                               FN_PTR(asReflectionField)},
3373   {CC "getEncodedClassAnnotationData",                CC "(" HS_KLASS2 OBJECT "IJ)[B",                                                      FN_PTR(getEncodedClassAnnotationData)},
3374   {CC "getEncodedExecutableAnnotationData",           CC "(" HS_METHOD2 OBJECT "IJ)[B",                                                     FN_PTR(getEncodedExecutableAnnotationData)},
3375   {CC "getEncodedFieldAnnotationData",                CC "(" HS_KLASS2 "I" OBJECT "IJ)[B",                                                  FN_PTR(getEncodedFieldAnnotationData)},
3376   {CC "getFailedSpeculations",                        CC "(J[[B)[[B",                                                                       FN_PTR(getFailedSpeculations)},
3377   {CC "getFailedSpeculationsAddress",                 CC "(" HS_METHOD2 ")J",                                                               FN_PTR(getFailedSpeculationsAddress)},
3378   {CC "releaseFailedSpeculations",                    CC "(J)V",                                                                            FN_PTR(releaseFailedSpeculations)},
3379   {CC "addFailedSpeculation",                         CC "(J[B)Z",                                                                          FN_PTR(addFailedSpeculation)},
3380   {CC "callSystemExit",                               CC "(I)V",                                                                            FN_PTR(callSystemExit)},
3381   {CC "ticksNow",                                     CC "()J",                                                                             FN_PTR(ticksNow)},
3382   {CC "getThreadLocalObject",                         CC "(I)" OBJECT,                                                                      FN_PTR(getThreadLocalObject)},
3383   {CC "setThreadLocalObject",                         CC "(I" OBJECT ")V",                                                                  FN_PTR(setThreadLocalObject)},
3384   {CC "getThreadLocalLong",                           CC "(I)J",                                                                            FN_PTR(getThreadLocalLong)},
3385   {CC "setThreadLocalLong",                           CC "(IJ)V",                                                                           FN_PTR(setThreadLocalLong)},
3386   {CC "registerCompilerPhase",                        CC "(" STRING ")I",                                                                   FN_PTR(registerCompilerPhase)},
3387   {CC "notifyCompilerPhaseEvent",                     CC "(JIII)V",                                                                         FN_PTR(notifyCompilerPhaseEvent)},
3388   {CC "notifyCompilerInliningEvent",                  CC "(I" HS_METHOD2 HS_METHOD2 "ZLjava/lang/String;I)V",                               FN_PTR(notifyCompilerInliningEvent)},
3389   {CC "getOopMapAt",                                  CC "(" HS_METHOD2 "I[J)V",                                                            FN_PTR(getOopMapAt)},
3390   {CC "updateCompilerThreadCanCallJava",              CC "(Z)Z",                                                                            FN_PTR(updateCompilerThreadCanCallJava)},
3391   {CC "getCompilationActivityMode",                   CC "()I",                                                                             FN_PTR(getCompilationActivityMode)},
3392 };
3393 
3394 int CompilerToVM::methods_count() {
3395   return sizeof(methods) / sizeof(JNINativeMethod);
3396 }