1 /*
   2  * Copyright (c) 2011, 2023, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #include "precompiled.hpp"
  25 #include "classfile/classLoaderData.inline.hpp"
  26 #include "classfile/javaClasses.inline.hpp"
  27 #include "classfile/stringTable.hpp"
  28 #include "classfile/symbolTable.hpp"
  29 #include "classfile/systemDictionary.hpp"
  30 #include "classfile/vmClasses.hpp"
  31 #include "code/scopeDesc.hpp"
  32 #include "compiler/compileBroker.hpp"
  33 #include "compiler/compilerEvent.hpp"
  34 #include "compiler/disassembler.hpp"
  35 #include "compiler/oopMap.hpp"
  36 #include "interpreter/bytecodeStream.hpp"
  37 #include "interpreter/linkResolver.hpp"
  38 #include "jfr/jfrEvents.hpp"
  39 #include "jvmci/jvmciCodeInstaller.hpp"
  40 #include "jvmci/jvmciCompilerToVM.hpp"
  41 #include "jvmci/jvmciRuntime.hpp"
  42 #include "logging/log.hpp"
  43 #include "logging/logTag.hpp"
  44 #include "memory/oopFactory.hpp"
  45 #include "memory/universe.hpp"
  46 #include "oops/constantPool.inline.hpp"
  47 #include "oops/instanceKlass.inline.hpp"
  48 #include "oops/instanceMirrorKlass.hpp"
  49 #include "oops/method.inline.hpp"
  50 #include "oops/objArrayKlass.inline.hpp"
  51 #include "oops/typeArrayOop.inline.hpp"
  52 #include "prims/jvmtiExport.hpp"
  53 #include "prims/methodHandles.hpp"
  54 #include "prims/nativeLookup.hpp"
  55 #include "runtime/arguments.hpp"
  56 #include "runtime/atomic.hpp"
  57 #include "runtime/deoptimization.hpp"
  58 #include "runtime/fieldDescriptor.inline.hpp"
  59 #include "runtime/frame.inline.hpp"
  60 #include "runtime/globals_extension.hpp"
  61 #include "runtime/interfaceSupport.inline.hpp"
  62 #include "runtime/jniHandles.inline.hpp"
  63 #include "runtime/reflectionUtils.hpp"
  64 #include "runtime/stackFrameStream.inline.hpp"
  65 #include "runtime/timerTrace.hpp"
  66 #include "runtime/vframe.inline.hpp"
  67 #include "runtime/vframe_hp.hpp"
  68 #if INCLUDE_JFR
  69 #include "jfr/jfr.hpp"
  70 #endif
  71 
  72 JVMCIKlassHandle::JVMCIKlassHandle(Thread* thread, Klass* klass) {
  73   _thread = thread;
  74   _klass = klass;
  75   if (klass != nullptr) {
  76     _holder = Handle(_thread, klass->klass_holder());
  77   }
  78 }
  79 
  80 JVMCIKlassHandle& JVMCIKlassHandle::operator=(Klass* klass) {
  81   _klass = klass;
  82   if (klass != nullptr) {
  83     _holder = Handle(_thread, klass->klass_holder());
  84   }
  85   return *this;
  86 }
  87 
  88 static void requireInHotSpot(const char* caller, JVMCI_TRAPS) {
  89   if (!JVMCIENV->is_hotspot()) {
  90     JVMCI_THROW_MSG(IllegalStateException, err_msg("Cannot call %s from JVMCI shared library", caller));
  91   }
  92 }
  93 
  94 class JVMCITraceMark : public StackObj {
  95   const char* _msg;
  96  public:
  97   JVMCITraceMark(const char* msg) {
  98     _msg = msg;
  99     JVMCI_event_2("Enter %s", _msg);
 100   }
 101   ~JVMCITraceMark() {
 102     JVMCI_event_2(" Exit %s", _msg);
 103   }
 104 };
 105 
 106 class JavaArgumentUnboxer : public SignatureIterator {
 107  protected:
 108   JavaCallArguments*  _jca;
 109   arrayOop _args;
 110   int _index;
 111 
 112   Handle next_arg(BasicType expectedType);
 113 
 114  public:
 115   JavaArgumentUnboxer(Symbol* signature,
 116                       JavaCallArguments* jca,
 117                       arrayOop args,
 118                       bool is_static)
 119     : SignatureIterator(signature)
 120   {
 121     this->_return_type = T_ILLEGAL;
 122     _jca = jca;
 123     _index = 0;
 124     _args = args;
 125     if (!is_static) {
 126       _jca->push_oop(next_arg(T_OBJECT));
 127     }
 128     do_parameters_on(this);
 129     assert(_index == args->length(), "arg count mismatch with signature");
 130   }
 131 
 132  private:
 133   friend class SignatureIterator;  // so do_parameters_on can call do_type
 134   void do_type(BasicType type) {
 135     if (is_reference_type(type)) {
 136       _jca->push_oop(next_arg(T_OBJECT));
 137       return;
 138     }
 139     Handle arg = next_arg(type);
 140     int box_offset = java_lang_boxing_object::value_offset(type);
 141     switch (type) {
 142     case T_BOOLEAN:     _jca->push_int(arg->bool_field(box_offset));    break;
 143     case T_CHAR:        _jca->push_int(arg->char_field(box_offset));    break;
 144     case T_SHORT:       _jca->push_int(arg->short_field(box_offset));   break;
 145     case T_BYTE:        _jca->push_int(arg->byte_field(box_offset));    break;
 146     case T_INT:         _jca->push_int(arg->int_field(box_offset));     break;
 147     case T_LONG:        _jca->push_long(arg->long_field(box_offset));   break;
 148     case T_FLOAT:       _jca->push_float(arg->float_field(box_offset));    break;
 149     case T_DOUBLE:      _jca->push_double(arg->double_field(box_offset));  break;
 150     default:            ShouldNotReachHere();
 151     }
 152   }
 153 };
 154 
 155 Handle JavaArgumentUnboxer::next_arg(BasicType expectedType) {
 156   assert(_index < _args->length(), "out of bounds");
 157   oop arg=((objArrayOop) (_args))->obj_at(_index++);
 158   assert(expectedType == T_OBJECT || java_lang_boxing_object::is_instance(arg, expectedType), "arg type mismatch");
 159   return Handle(Thread::current(), arg);
 160 }
 161 
 162 // Bring the JVMCI compiler thread into the VM state.
 163 #define JVMCI_VM_ENTRY_MARK                                       \
 164   MACOS_AARCH64_ONLY(ThreadWXEnable __wx(WXWrite, thread));       \
 165   ThreadInVMfromNative __tiv(thread);                             \
 166   HandleMarkCleaner __hm(thread);                                 \
 167   JavaThread* THREAD = thread;                                        \
 168   debug_only(VMNativeEntryWrapper __vew;)
 169 
 170 // Native method block that transitions current thread to '_thread_in_vm'.
 171 #define C2V_BLOCK(result_type, name, signature)      \
 172   JVMCI_VM_ENTRY_MARK;                               \
 173   ResourceMark rm;                                   \
 174   JNI_JVMCIENV(JVMCI::compilation_tick(thread), env);
 175 
 176 static JavaThread* get_current_thread(bool allow_null=true) {
 177   Thread* thread = Thread::current_or_null_safe();
 178   if (thread == nullptr) {
 179     assert(allow_null, "npe");
 180     return nullptr;
 181   }
 182   return JavaThread::cast(thread);
 183 }
 184 
 185 // Entry to native method implementation that transitions
 186 // current thread to '_thread_in_vm'.
 187 #define C2V_VMENTRY(result_type, name, signature)        \
 188   JNIEXPORT result_type JNICALL c2v_ ## name signature { \
 189   JavaThread* thread = get_current_thread();             \
 190   if (thread == nullptr) {                                  \
 191     env->ThrowNew(JNIJVMCI::InternalError::clazz(),      \
 192         err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
 193     return;                                              \
 194   }                                                      \
 195   C2V_BLOCK(result_type, name, signature)                \
 196   JVMCITraceMark jtm("CompilerToVM::" #name);
 197 
 198 #define C2V_VMENTRY_(result_type, name, signature, result) \
 199   JNIEXPORT result_type JNICALL c2v_ ## name signature { \
 200   JavaThread* thread = get_current_thread();             \
 201   if (thread == nullptr) {                                  \
 202     env->ThrowNew(JNIJVMCI::InternalError::clazz(),      \
 203         err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
 204     return result;                                       \
 205   }                                                      \
 206   C2V_BLOCK(result_type, name, signature)                \
 207   JVMCITraceMark jtm("CompilerToVM::" #name);
 208 
 209 #define C2V_VMENTRY_NULL(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, nullptr)
 210 #define C2V_VMENTRY_0(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, 0)
 211 
 212 // Entry to native method implementation that does not transition
 213 // current thread to '_thread_in_vm'.
 214 #define C2V_VMENTRY_PREFIX(result_type, name, signature) \
 215   JNIEXPORT result_type JNICALL c2v_ ## name signature { \
 216   JavaThread* thread = get_current_thread();
 217 
 218 #define C2V_END }
 219 
 220 #define JNI_THROW(caller, name, msg) do {                                         \
 221     jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg);               \
 222     if (__throw_res != JNI_OK) {                                                  \
 223       tty->print_cr("Throwing " #name " in " caller " returned %d", __throw_res); \
 224     }                                                                             \
 225     return;                                                                       \
 226   } while (0);
 227 
 228 #define JNI_THROW_(caller, name, msg, result) do {                                \
 229     jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg);               \
 230     if (__throw_res != JNI_OK) {                                                  \
 231       tty->print_cr("Throwing " #name " in " caller " returned %d", __throw_res); \
 232     }                                                                             \
 233     return result;                                                                \
 234   } while (0)
 235 
 236 jobjectArray readConfiguration0(JNIEnv *env, JVMCI_TRAPS);
 237 
 238 C2V_VMENTRY_NULL(jobjectArray, readConfiguration, (JNIEnv* env))
 239   jobjectArray config = readConfiguration0(env, JVMCI_CHECK_NULL);
 240   return config;
 241 }
 242 
 243 C2V_VMENTRY_NULL(jobject, getFlagValue, (JNIEnv* env, jobject c2vm, jobject name_handle))
 244 #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();
 245 #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();
 246   JVMCIObject name = JVMCIENV->wrap(name_handle);
 247   if (name.is_null()) {
 248     JVMCI_THROW_NULL(NullPointerException);
 249   }
 250   const char* cstring = JVMCIENV->as_utf8_string(name);
 251   const JVMFlag* flag = JVMFlag::find_declared_flag(cstring);
 252   if (flag == nullptr) {
 253     return c2vm;
 254   }
 255   if (flag->is_bool()) {
 256     jvalue prim;
 257     prim.z = flag->get_bool();
 258     JVMCIObject box = JVMCIENV->create_box(T_BOOLEAN, &prim, JVMCI_CHECK_NULL);
 259     return JVMCIENV->get_jobject(box);
 260   } else if (flag->is_ccstr()) {
 261     JVMCIObject value = JVMCIENV->create_string(flag->get_ccstr(), JVMCI_CHECK_NULL);
 262     return JVMCIENV->get_jobject(value);
 263   } else if (flag->is_intx()) {
 264     RETURN_BOXED_LONG(flag->get_intx());
 265   } else if (flag->is_int()) {
 266     RETURN_BOXED_LONG(flag->get_int());
 267   } else if (flag->is_uint()) {
 268     RETURN_BOXED_LONG(flag->get_uint());
 269   } else if (flag->is_uint64_t()) {
 270     RETURN_BOXED_LONG(flag->get_uint64_t());
 271   } else if (flag->is_size_t()) {
 272     RETURN_BOXED_LONG(flag->get_size_t());
 273   } else if (flag->is_uintx()) {
 274     RETURN_BOXED_LONG(flag->get_uintx());
 275   } else if (flag->is_double()) {
 276     RETURN_BOXED_DOUBLE(flag->get_double());
 277   } else {
 278     JVMCI_ERROR_NULL("VM flag %s has unsupported type %s", flag->name(), flag->type_string());
 279   }
 280 #undef RETURN_BOXED_LONG
 281 #undef RETURN_BOXED_DOUBLE
 282 C2V_END
 283 
 284 // Macros for argument pairs representing a wrapper object and its wrapped VM pointer
 285 #define ARGUMENT_PAIR(name) jobject name ## _obj, jlong name ## _pointer
 286 #define UNPACK_PAIR(type, name) ((type*) name ## _pointer)
 287 
 288 C2V_VMENTRY_NULL(jbyteArray, getBytecode, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 289   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
 290 
 291   int code_size = method->code_size();
 292   jbyte* reconstituted_code = NEW_RESOURCE_ARRAY(jbyte, code_size);
 293 
 294   guarantee(method->method_holder()->is_rewritten(), "Method's holder should be rewritten");
 295   // iterate over all bytecodes and replace non-Java bytecodes
 296 
 297   for (BytecodeStream s(method); s.next() != Bytecodes::_illegal; ) {
 298     Bytecodes::Code code = s.code();
 299     Bytecodes::Code raw_code = s.raw_code();
 300     int bci = s.bci();
 301     int len = s.instruction_size();
 302 
 303     // Restore original byte code.
 304     reconstituted_code[bci] =  (jbyte) (s.is_wide()? Bytecodes::_wide : code);
 305     if (len > 1) {
 306       memcpy(reconstituted_code + (bci + 1), s.bcp()+1, len-1);
 307     }
 308 
 309     if (len > 1) {
 310       // Restore the big-endian constant pool indexes.
 311       // Cf. Rewriter::scan_method
 312       switch (code) {
 313         case Bytecodes::_getstatic:
 314         case Bytecodes::_putstatic:
 315         case Bytecodes::_getfield:
 316         case Bytecodes::_putfield:
 317         case Bytecodes::_invokevirtual:
 318         case Bytecodes::_invokespecial:
 319         case Bytecodes::_invokestatic:
 320         case Bytecodes::_invokeinterface:
 321         case Bytecodes::_invokehandle: {
 322           int cp_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
 323           Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
 324           break;
 325         }
 326 
 327         case Bytecodes::_invokedynamic: {
 328           int cp_index = Bytes::get_native_u4((address) reconstituted_code + (bci + 1));
 329           Bytes::put_Java_u4((address) reconstituted_code + (bci + 1), (u4) cp_index);
 330           break;
 331         }
 332 
 333         default:
 334           break;
 335       }
 336 
 337       // Not all ldc byte code are rewritten.
 338       switch (raw_code) {
 339         case Bytecodes::_fast_aldc: {
 340           int cpc_index = reconstituted_code[bci + 1] & 0xff;
 341           int cp_index = method->constants()->object_to_cp_index(cpc_index);
 342           assert(cp_index < method->constants()->length(), "sanity check");
 343           reconstituted_code[bci + 1] = (jbyte) cp_index;
 344           break;
 345         }
 346 
 347         case Bytecodes::_fast_aldc_w: {
 348           int cpc_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
 349           int cp_index = method->constants()->object_to_cp_index(cpc_index);
 350           assert(cp_index < method->constants()->length(), "sanity check");
 351           Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
 352           break;
 353         }
 354 
 355         default:
 356           break;
 357       }
 358     }
 359   }
 360 
 361   JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL);
 362   JVMCIENV->copy_bytes_from(reconstituted_code, result, 0, code_size);
 363   return JVMCIENV->get_jbyteArray(result);
 364 C2V_END
 365 
 366 C2V_VMENTRY_0(jint, getExceptionTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 367   Method* method = UNPACK_PAIR(Method, method);
 368   return method->exception_table_length();
 369 C2V_END
 370 
 371 C2V_VMENTRY_0(jlong, getExceptionTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 372   Method* method = UNPACK_PAIR(Method, method);
 373   if (method->exception_table_length() == 0) {
 374     return 0L;
 375   }
 376   return (jlong) (address) method->exception_table_start();
 377 C2V_END
 378 
 379 C2V_VMENTRY_NULL(jobject, asResolvedJavaMethod, (JNIEnv* env, jobject, jobject executable_handle))
 380   requireInHotSpot("asResolvedJavaMethod", JVMCI_CHECK_NULL);
 381   oop executable = JNIHandles::resolve(executable_handle);
 382   oop mirror = nullptr;
 383   int slot = 0;
 384 
 385   if (executable->klass() == vmClasses::reflect_Constructor_klass()) {
 386     mirror = java_lang_reflect_Constructor::clazz(executable);
 387     slot = java_lang_reflect_Constructor::slot(executable);
 388   } else {
 389     assert(executable->klass() == vmClasses::reflect_Method_klass(), "wrong type");
 390     mirror = java_lang_reflect_Method::clazz(executable);
 391     slot = java_lang_reflect_Method::slot(executable);
 392   }
 393   Klass* holder = java_lang_Class::as_Klass(mirror);
 394   methodHandle method (THREAD, InstanceKlass::cast(holder)->method_with_idnum(slot));
 395   JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
 396   return JVMCIENV->get_jobject(result);
 397 }
 398 
 399 C2V_VMENTRY_NULL(jobject, getResolvedJavaMethod, (JNIEnv* env, jobject, jobject base, jlong offset))
 400   Method* method = nullptr;
 401   JVMCIObject base_object = JVMCIENV->wrap(base);
 402   if (base_object.is_null()) {
 403     method = *((Method**)(offset));
 404   } else {
 405     Handle obj = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
 406     if (obj->is_a(vmClasses::ResolvedMethodName_klass())) {
 407       method = (Method*) (intptr_t) obj->long_field(offset);
 408     } else {
 409       JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", obj->klass()->external_name()));
 410     }
 411   }
 412   if (method == nullptr) {
 413     JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", JVMCIENV->klass_name(base_object)));
 414   }
 415   assert (method->is_method(), "invalid read");
 416   JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, method), JVMCI_CHECK_NULL);
 417   return JVMCIENV->get_jobject(result);
 418 }
 419 
 420 C2V_VMENTRY_NULL(jobject, getConstantPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass_or_method), jboolean is_klass))
 421   ConstantPool* cp = nullptr;
 422   if (UNPACK_PAIR(address, klass_or_method) == 0) {
 423     JVMCI_THROW_NULL(NullPointerException);
 424   }
 425   if (!is_klass) {
 426     cp = (UNPACK_PAIR(Method, klass_or_method))->constMethod()->constants();
 427   } else {
 428     cp = InstanceKlass::cast(UNPACK_PAIR(Klass, klass_or_method))->constants();
 429   }
 430 
 431   JVMCIObject result = JVMCIENV->get_jvmci_constant_pool(constantPoolHandle(THREAD, cp), JVMCI_CHECK_NULL);
 432   return JVMCIENV->get_jobject(result);
 433 }
 434 
 435 C2V_VMENTRY_NULL(jobject, getResolvedJavaType0, (JNIEnv* env, jobject, jobject base, jlong offset, jboolean compressed))
 436   JVMCIObject base_object = JVMCIENV->wrap(base);
 437   if (base_object.is_null()) {
 438     JVMCI_THROW_MSG_NULL(NullPointerException, "base object is null");
 439   }
 440 
 441   const char* base_desc = nullptr;
 442   JVMCIKlassHandle klass(THREAD);
 443   if (offset == oopDesc::klass_offset_in_bytes()) {
 444     if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
 445       Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
 446       klass = base_oop->klass();
 447     } else {
 448       goto unexpected;
 449     }
 450   } else if (!compressed) {
 451     if (JVMCIENV->isa_HotSpotConstantPool(base_object)) {
 452       ConstantPool* cp = JVMCIENV->asConstantPool(base_object);
 453       if (offset == in_bytes(ConstantPool::pool_holder_offset())) {
 454         klass = cp->pool_holder();
 455       } else {
 456         base_desc = FormatBufferResource("[constant pool for %s]", cp->pool_holder()->signature_name());
 457         goto unexpected;
 458       }
 459     } else if (JVMCIENV->isa_HotSpotResolvedObjectTypeImpl(base_object)) {
 460       Klass* base_klass = JVMCIENV->asKlass(base_object);
 461       if (offset == in_bytes(Klass::subklass_offset())) {
 462         klass = base_klass->subklass();
 463       } else if (offset == in_bytes(Klass::super_offset())) {
 464         klass = base_klass->super();
 465       } else if (offset == in_bytes(Klass::next_sibling_offset())) {
 466         klass = base_klass->next_sibling();
 467       } else if (offset == in_bytes(ObjArrayKlass::element_klass_offset()) && base_klass->is_objArray_klass()) {
 468         klass = ObjArrayKlass::cast(base_klass)->element_klass();
 469       } else if (offset >= in_bytes(Klass::primary_supers_offset()) &&
 470                  offset < in_bytes(Klass::primary_supers_offset()) + (int) (sizeof(Klass*) * Klass::primary_super_limit()) &&
 471                  offset % sizeof(Klass*) == 0) {
 472         // Offset is within the primary supers array
 473         int index = (int) ((offset - in_bytes(Klass::primary_supers_offset())) / sizeof(Klass*));
 474         klass = base_klass->primary_super_of_depth(index);
 475       } else {
 476         base_desc = FormatBufferResource("[%s]", base_klass->signature_name());
 477         goto unexpected;
 478       }
 479     } else if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
 480       Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
 481       if (base_oop->is_a(vmClasses::Class_klass())) {
 482         if (offset == java_lang_Class::klass_offset()) {
 483           klass = java_lang_Class::as_Klass(base_oop());
 484         } else if (offset == java_lang_Class::array_klass_offset()) {
 485           klass = java_lang_Class::array_klass_acquire(base_oop());
 486         } else {
 487           base_desc = FormatBufferResource("[Class=%s]", java_lang_Class::as_Klass(base_oop())->signature_name());
 488           goto unexpected;
 489         }
 490       } else {
 491         if (!base_oop.is_null()) {
 492           base_desc = FormatBufferResource("[%s]", base_oop()->klass()->signature_name());
 493         }
 494         goto unexpected;
 495       }
 496     } else if (JVMCIENV->isa_HotSpotMethodData(base_object)) {
 497       jlong base_address = (intptr_t) JVMCIENV->asMethodData(base_object);
 498       klass = *((Klass**) (intptr_t) (base_address + offset));
 499       if (klass == nullptr || !klass->is_loader_alive()) {
 500         // Klasses in methodData might be concurrently unloading so return null in that case.
 501         return nullptr;
 502       }
 503     } else {
 504       goto unexpected;
 505     }
 506   } else {
 507     goto unexpected;
 508   }
 509 
 510   {
 511     if (klass == nullptr) {
 512       return nullptr;
 513     }
 514     JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
 515     return JVMCIENV->get_jobject(result);
 516   }
 517 
 518 unexpected:
 519   JVMCI_THROW_MSG_NULL(IllegalArgumentException,
 520                        err_msg("Unexpected arguments: %s%s " JLONG_FORMAT " %s",
 521                                JVMCIENV->klass_name(base_object), base_desc == nullptr ? "" : base_desc,
 522                                offset, compressed ? "true" : "false"));
 523 }
 524 
 525 C2V_VMENTRY_NULL(jobject, findUniqueConcreteMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
 526   methodHandle method (THREAD, UNPACK_PAIR(Method, method));
 527   InstanceKlass* holder = InstanceKlass::cast(UNPACK_PAIR(Klass, klass));
 528   if (holder->is_interface()) {
 529     JVMCI_THROW_MSG_NULL(InternalError, err_msg("Interface %s should be handled in Java code", holder->external_name()));
 530   }
 531   if (method->can_be_statically_bound()) {
 532     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()));
 533   }
 534 
 535   methodHandle ucm;
 536   {
 537     MutexLocker locker(Compile_lock);
 538     ucm = methodHandle(THREAD, Dependencies::find_unique_concrete_method(holder, method()));
 539   }
 540   JVMCIObject result = JVMCIENV->get_jvmci_method(ucm, JVMCI_CHECK_NULL);
 541   return JVMCIENV->get_jobject(result);
 542 C2V_END
 543 
 544 C2V_VMENTRY_NULL(jobject, getImplementor, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
 545   Klass* klass = UNPACK_PAIR(Klass, klass);
 546   if (!klass->is_interface()) {
 547     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
 548         err_msg("Expected interface type, got %s", klass->external_name()));
 549   }
 550   InstanceKlass* iklass = InstanceKlass::cast(klass);
 551   JVMCIKlassHandle handle(THREAD, iklass->implementor());
 552   JVMCIObject implementor = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
 553   return JVMCIENV->get_jobject(implementor);
 554 C2V_END
 555 
 556 C2V_VMENTRY_0(jboolean, methodIsIgnoredBySecurityStackWalk,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 557   Method* method = UNPACK_PAIR(Method, method);
 558   return method->is_ignored_by_security_stack_walk();
 559 C2V_END
 560 
 561 C2V_VMENTRY_0(jboolean, isCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 562   Method* method = UNPACK_PAIR(Method, method);
 563   // Skip redefined methods
 564   if (method->is_old()) {
 565     return false;
 566   }
 567   return !method->is_not_compilable(CompLevel_full_optimization);
 568 C2V_END
 569 
 570 C2V_VMENTRY_0(jboolean, hasNeverInlineDirective,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 571   methodHandle method (THREAD, UNPACK_PAIR(Method, method));
 572   return !Inline || CompilerOracle::should_not_inline(method) || method->dont_inline();
 573 C2V_END
 574 
 575 C2V_VMENTRY_0(jboolean, shouldInlineMethod,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 576   methodHandle method (THREAD, UNPACK_PAIR(Method, method));
 577   return CompilerOracle::should_inline(method) || method->force_inline();
 578 C2V_END
 579 
 580 C2V_VMENTRY_NULL(jobject, lookupType, (JNIEnv* env, jobject, jstring jname, ARGUMENT_PAIR(accessing_klass), jint accessing_klass_loader, jboolean resolve))
 581   JVMCIObject name = JVMCIENV->wrap(jname);
 582   const char* str = JVMCIENV->as_utf8_string(name);
 583   TempNewSymbol class_name = SymbolTable::new_symbol(str);
 584 
 585   if (class_name->utf8_length() <= 1) {
 586     JVMCI_THROW_MSG_0(InternalError, err_msg("Primitive type %s should be handled in Java code", str));
 587   }
 588 
 589 #ifdef ASSERT
 590   const char* val = Arguments::PropertyList_get_value(Arguments::system_properties(), "test.jvmci.lookupTypeException");
 591   if (val != nullptr) {
 592     if (strstr(val, "<trace>") != nullptr) {
 593       tty->print_cr("CompilerToVM.lookupType: %s", str);
 594     } else if (strstr(val, str) != nullptr) {
 595       THROW_MSG_0(vmSymbols::java_lang_Exception(),
 596                   err_msg("lookupTypeException: %s", str));
 597     }
 598   }
 599 #endif
 600 
 601   JVMCIKlassHandle resolved_klass(THREAD);
 602   Klass* accessing_klass = UNPACK_PAIR(Klass, accessing_klass);
 603   Handle class_loader;
 604   Handle protection_domain;
 605   if (accessing_klass != nullptr) {
 606     class_loader = Handle(THREAD, accessing_klass->class_loader());
 607     protection_domain = Handle(THREAD, accessing_klass->protection_domain());
 608   } else {
 609     switch (accessing_klass_loader) {
 610       case 0: break; // class_loader is already null, the boot loader
 611       case 1: class_loader = Handle(THREAD, SystemDictionary::java_platform_loader()); break;
 612       case 2: class_loader = Handle(THREAD, SystemDictionary::java_system_loader()); break;
 613       default:
 614         JVMCI_THROW_MSG_0(InternalError, err_msg("Illegal class loader value: %d", accessing_klass_loader));
 615     }
 616     JVMCIENV->runtime()->initialize(JVMCI_CHECK_NULL);
 617   }
 618 
 619   if (resolve) {
 620     resolved_klass = SystemDictionary::resolve_or_null(class_name, class_loader, protection_domain, CHECK_NULL);
 621     if (resolved_klass == nullptr) {
 622       JVMCI_THROW_MSG_NULL(NoClassDefFoundError, str);
 623     }
 624   } else {
 625     if (Signature::has_envelope(class_name)) {
 626       // This is a name from a signature.  Strip off the trimmings.
 627       // Call recursive to keep scope of strippedsym.
 628       TempNewSymbol strippedsym = Signature::strip_envelope(class_name);
 629       resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
 630                                                              class_loader,
 631                                                              protection_domain);
 632     } else if (Signature::is_array(class_name)) {
 633       SignatureStream ss(class_name, false);
 634       int ndim = ss.skip_array_prefix();
 635       if (ss.type() == T_OBJECT) {
 636         Symbol* strippedsym = ss.as_symbol();
 637         resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
 638                                                                class_loader,
 639                                                                protection_domain);
 640         if (!resolved_klass.is_null()) {
 641           resolved_klass = resolved_klass->array_klass(ndim, CHECK_NULL);
 642         }
 643       } else {
 644         resolved_klass = TypeArrayKlass::cast(Universe::typeArrayKlassObj(ss.type()))->array_klass(ndim, CHECK_NULL);
 645       }
 646     } else {
 647       resolved_klass = SystemDictionary::find_instance_klass(THREAD, class_name,
 648                                                              class_loader,
 649                                                              protection_domain);
 650     }
 651   }
 652   JVMCIObject result = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
 653   return JVMCIENV->get_jobject(result);
 654 C2V_END
 655 
 656 C2V_VMENTRY_NULL(jobject, getArrayType, (JNIEnv* env, jobject, jchar type_char, ARGUMENT_PAIR(klass)))
 657   JVMCIKlassHandle array_klass(THREAD);
 658   Klass* klass = UNPACK_PAIR(Klass, klass);
 659   if (klass == nullptr) {
 660     BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
 661     if (type == T_VOID) {
 662       return nullptr;
 663     }
 664     array_klass = Universe::typeArrayKlassObj(type);
 665     if (array_klass == nullptr) {
 666       JVMCI_THROW_MSG_NULL(InternalError, err_msg("No array klass for primitive type %s", type2name(type)));
 667     }
 668   } else {
 669     array_klass = klass->array_klass(CHECK_NULL);
 670   }
 671   JVMCIObject result = JVMCIENV->get_jvmci_type(array_klass, JVMCI_CHECK_NULL);
 672   return JVMCIENV->get_jobject(result);
 673 C2V_END
 674 
 675 C2V_VMENTRY_NULL(jobject, lookupClass, (JNIEnv* env, jobject, jclass mirror))
 676   requireInHotSpot("lookupClass", JVMCI_CHECK_NULL);
 677   if (mirror == nullptr) {
 678     return nullptr;
 679   }
 680   JVMCIKlassHandle klass(THREAD);
 681   klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
 682   if (klass == nullptr) {
 683     JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Primitive classes are unsupported");
 684   }
 685   JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
 686   return JVMCIENV->get_jobject(result);
 687 C2V_END
 688 
 689 C2V_VMENTRY_NULL(jobject, lookupJClass, (JNIEnv* env, jobject, jlong jclass_value))
 690     if (jclass_value == 0L) {
 691         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass must not be zero");
 692     }
 693     jclass mirror = reinterpret_cast<jclass>(jclass_value);
 694     // Since the jclass_value is passed as a jlong, we perform additional checks to prevent the caller from accidentally
 695     // sending a value that is not a JNI handle.
 696     if (JNIHandles::handle_type(thread, mirror) == JNIInvalidRefType) {
 697         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass is not a valid JNI reference");
 698     }
 699     oop obj = JNIHandles::resolve(mirror);
 700     if (!java_lang_Class::is_instance(obj)) {
 701         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass must be a reference to the Class object");
 702     }
 703     JVMCIKlassHandle klass(THREAD, java_lang_Class::as_Klass(obj));
 704     JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
 705     return JVMCIENV->get_jobject(result);
 706 C2V_END
 707 
 708 C2V_VMENTRY_NULL(jobject, getUncachedStringInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 709   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 710   constantTag tag = cp->tag_at(index);
 711   if (!tag.is_string()) {
 712     JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
 713   }
 714   oop obj = cp->uncached_string_at(index, CHECK_NULL);
 715   return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
 716 C2V_END
 717 
 718 C2V_VMENTRY_NULL(jobject, lookupConstantInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint cp_index, bool resolve))
 719   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 720   oop obj;
 721   if (!resolve) {
 722     bool found_it;
 723     obj = cp->find_cached_constant_at(cp_index, found_it, CHECK_NULL);
 724     if (!found_it) {
 725       return nullptr;
 726     }
 727   } else {
 728     obj = cp->resolve_possibly_cached_constant_at(cp_index, CHECK_NULL);
 729   }
 730   constantTag tag = cp->tag_at(cp_index);
 731   if (tag.is_dynamic_constant()) {
 732     if (obj == nullptr) {
 733       return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
 734     }
 735     BasicType bt = Signature::basic_type(cp->uncached_signature_ref_at(cp_index));
 736     if (!is_reference_type(bt)) {
 737       if (!is_java_primitive(bt)) {
 738         return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
 739       }
 740 
 741       // Convert standard box (e.g. java.lang.Integer) to JVMCI box (e.g. jdk.vm.ci.meta.PrimitiveConstant)
 742       jvalue value;
 743       jlong raw_value;
 744       jchar type_char;
 745       BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
 746       assert(bt2 == bt, "");
 747       switch (bt2) {
 748         case T_LONG:    type_char = 'J'; raw_value = value.j; break;
 749         case T_DOUBLE:  type_char = 'D'; raw_value = value.j; break;
 750         case T_FLOAT:   type_char = 'F'; raw_value = value.i; break;
 751         case T_INT:     type_char = 'I'; raw_value = value.i; break;
 752         case T_SHORT:   type_char = 'S'; raw_value = value.s; break;
 753         case T_BYTE:    type_char = 'B'; raw_value = value.b; break;
 754         case T_CHAR:    type_char = 'C'; raw_value = value.c; break;
 755         case T_BOOLEAN: type_char = 'Z'; raw_value = value.z; break;
 756         default:        return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
 757       }
 758 
 759       JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, raw_value, JVMCI_CHECK_NULL);
 760       return JVMCIENV->get_jobject(result);
 761     }
 762   }
 763   return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
 764 C2V_END
 765 
 766 C2V_VMENTRY_NULL(jobjectArray, resolveBootstrapMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 767   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 768   constantTag tag = cp->tag_at(index);
 769   bool is_indy = tag.is_invoke_dynamic();
 770   bool is_condy = tag.is_dynamic_constant();
 771   if (!(is_condy || is_indy)) {
 772     JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
 773   }
 774   // Get the indy entry based on CP index
 775   int indy_index = -1;
 776   for (int i = 0; i < cp->resolved_indy_entries_length(); i++) {
 777     if (cp->resolved_indy_entry_at(i)->constant_pool_index() == index) {
 778       indy_index = i;
 779     }
 780   }
 781   // Resolve the bootstrap specifier, its name, type, and static arguments
 782   BootstrapInfo bootstrap_specifier(cp, index, indy_index);
 783   Handle bsm = bootstrap_specifier.resolve_bsm(CHECK_NULL);
 784 
 785   // call java.lang.invoke.MethodHandle::asFixedArity() -> MethodHandle
 786   // to get a DirectMethodHandle from which we can then extract a Method*
 787   JavaValue result(T_OBJECT);
 788   JavaCalls::call_virtual(&result,
 789                          bsm,
 790                          vmClasses::MethodHandle_klass(),
 791                          vmSymbols::asFixedArity_name(),
 792                          vmSymbols::asFixedArity_signature(),
 793                          CHECK_NULL);
 794   bsm = Handle(THREAD, result.get_oop());
 795 
 796   // Check assumption about getting a DirectMethodHandle
 797   if (!java_lang_invoke_DirectMethodHandle::is_instance(bsm())) {
 798     JVMCI_THROW_MSG_NULL(InternalError, err_msg("Unexpected MethodHandle subclass: %s", bsm->klass()->external_name()));
 799   }
 800   // Create return array describing the bootstrap method invocation (BSMI)
 801   JVMCIObjectArray bsmi = JVMCIENV->new_Object_array(4, JVMCI_CHECK_NULL);
 802 
 803   // Extract Method* and wrap it in a ResolvedJavaMethod
 804   Handle member = Handle(THREAD, java_lang_invoke_DirectMethodHandle::member(bsm()));
 805   JVMCIObject bsmi_method = JVMCIENV->get_jvmci_method(methodHandle(THREAD, java_lang_invoke_MemberName::vmtarget(member())), JVMCI_CHECK_NULL);
 806   JVMCIENV->put_object_at(bsmi, 0, bsmi_method);
 807 
 808   JVMCIObject bsmi_name = JVMCIENV->create_string(bootstrap_specifier.name(), JVMCI_CHECK_NULL);
 809   JVMCIENV->put_object_at(bsmi, 1, bsmi_name);
 810 
 811   Handle type_arg = bootstrap_specifier.type_arg();
 812   JVMCIObject bsmi_type = JVMCIENV->get_object_constant(type_arg());
 813   JVMCIENV->put_object_at(bsmi, 2, bsmi_type);
 814 
 815   Handle arg_values = bootstrap_specifier.arg_values();
 816   if (arg_values.not_null()) {
 817     if (!arg_values->is_array()) {
 818       JVMCIENV->put_object_at(bsmi, 3, JVMCIENV->get_object_constant(arg_values()));
 819     } else if (arg_values->is_objArray()) {
 820       objArrayHandle args_array = objArrayHandle(THREAD, (objArrayOop) arg_values());
 821       int len = args_array->length();
 822       JVMCIObjectArray arguments = JVMCIENV->new_JavaConstant_array(len, JVMCI_CHECK_NULL);
 823       JVMCIENV->put_object_at(bsmi, 3, arguments);
 824       for (int i = 0; i < len; i++) {
 825         oop x = args_array->obj_at(i);
 826         if (x != nullptr) {
 827           JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_object_constant(x));
 828         } else {
 829           JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_JavaConstant_NULL_POINTER());
 830         }
 831       }
 832     } else if (arg_values->is_typeArray()) {
 833       typeArrayHandle bsci = typeArrayHandle(THREAD, (typeArrayOop) arg_values());
 834       JVMCIPrimitiveArray arguments = JVMCIENV->new_intArray(bsci->length(), JVMCI_CHECK_NULL);
 835       JVMCIENV->put_object_at(bsmi, 3, arguments);
 836       for (int i = 0; i < bsci->length(); i++) {
 837         JVMCIENV->put_int_at(arguments, i, bsci->int_at(i));
 838       }
 839     }
 840   }
 841   return JVMCIENV->get_jobjectArray(bsmi);
 842 C2V_END
 843 
 844 C2V_VMENTRY_0(jint, lookupNameAndTypeRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode))
 845   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 846   return cp->name_and_type_ref_index_at(index, (Bytecodes::Code)opcode);
 847 C2V_END
 848 
 849 C2V_VMENTRY_NULL(jobject, lookupNameInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode))
 850   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 851   JVMCIObject sym = JVMCIENV->create_string(cp->name_ref_at(which, (Bytecodes::Code)opcode), JVMCI_CHECK_NULL);
 852   return JVMCIENV->get_jobject(sym);
 853 C2V_END
 854 
 855 C2V_VMENTRY_NULL(jobject, lookupSignatureInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode))
 856   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 857   JVMCIObject sym = JVMCIENV->create_string(cp->signature_ref_at(which, (Bytecodes::Code)opcode), JVMCI_CHECK_NULL);
 858   return JVMCIENV->get_jobject(sym);
 859 C2V_END
 860 
 861 C2V_VMENTRY_0(jint, lookupKlassRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode))
 862   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 863   return cp->klass_ref_index_at(index, (Bytecodes::Code)opcode);
 864 C2V_END
 865 
 866 C2V_VMENTRY_NULL(jobject, resolveTypeInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 867   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 868   Klass* klass = cp->klass_at(index, CHECK_NULL);
 869   JVMCIKlassHandle resolved_klass(THREAD, klass);
 870   if (resolved_klass->is_instance_klass()) {
 871     InstanceKlass::cast(resolved_klass())->link_class(CHECK_NULL);
 872     if (!InstanceKlass::cast(resolved_klass())->is_linked()) {
 873       // link_class() should not return here if there is an issue.
 874       JVMCI_THROW_MSG_NULL(InternalError, err_msg("Class %s must be linked", resolved_klass()->external_name()));
 875     }
 876   }
 877   JVMCIObject klassObject = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
 878   return JVMCIENV->get_jobject(klassObject);
 879 C2V_END
 880 
 881 C2V_VMENTRY_NULL(jobject, lookupKlassInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 882   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 883   Klass* loading_klass = cp->pool_holder();
 884   bool is_accessible = false;
 885   JVMCIKlassHandle klass(THREAD, JVMCIRuntime::get_klass_by_index(cp, index, is_accessible, loading_klass));
 886   Symbol* symbol = nullptr;
 887   if (klass.is_null()) {
 888     constantTag tag = cp->tag_at(index);
 889     if (tag.is_klass()) {
 890       // The klass has been inserted into the constant pool
 891       // very recently.
 892       klass = cp->resolved_klass_at(index);
 893     } else if (tag.is_symbol()) {
 894       symbol = cp->symbol_at(index);
 895     } else {
 896       assert(cp->tag_at(index).is_unresolved_klass(), "wrong tag");
 897       symbol = cp->klass_name_at(index);
 898     }
 899   }
 900   JVMCIObject result;
 901   if (!klass.is_null()) {
 902     result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
 903   } else {
 904     result = JVMCIENV->create_string(symbol, JVMCI_CHECK_NULL);
 905   }
 906   return JVMCIENV->get_jobject(result);
 907 C2V_END
 908 
 909 C2V_VMENTRY_NULL(jobject, lookupAppendixInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 910   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 911   oop appendix_oop = ConstantPool::appendix_at_if_loaded(cp, index);
 912   return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(appendix_oop));
 913 C2V_END
 914 
 915 C2V_VMENTRY_NULL(jobject, lookupMethodInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jbyte opcode, ARGUMENT_PAIR(caller)))
 916   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 917   methodHandle caller(THREAD, UNPACK_PAIR(Method, caller));
 918   InstanceKlass* pool_holder = cp->pool_holder();
 919   Bytecodes::Code bc = (Bytecodes::Code) (((int) opcode) & 0xFF);
 920   methodHandle method(THREAD, JVMCIRuntime::get_method_by_index(cp, index, bc, pool_holder));
 921   JFR_ONLY(if (method.not_null()) Jfr::on_resolution(caller(), method(), CHECK_NULL);)
 922   JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
 923   return JVMCIENV->get_jobject(result);
 924 C2V_END
 925 
 926 C2V_VMENTRY_0(jint, constantPoolRemapInstructionOperandFromCache, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 927   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 928   return cp->remap_instruction_operand_from_cache(index);
 929 C2V_END
 930 
 931 C2V_VMENTRY_NULL(jobject, resolveFieldInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, ARGUMENT_PAIR(method), jbyte opcode, jintArray info_handle))
 932   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 933   Bytecodes::Code code = (Bytecodes::Code)(((int) opcode) & 0xFF);
 934   fieldDescriptor fd;
 935   methodHandle mh(THREAD, UNPACK_PAIR(Method, method));
 936   LinkInfo link_info(cp, index, mh, code, CHECK_NULL);
 937   LinkResolver::resolve_field(fd, link_info, Bytecodes::java_code(code), false, CHECK_NULL);
 938   JVMCIPrimitiveArray info = JVMCIENV->wrap(info_handle);
 939   if (info.is_null() || JVMCIENV->get_length(info) != 4) {
 940     JVMCI_ERROR_NULL("info must not be null and have a length of 4");
 941   }
 942   JVMCIENV->put_int_at(info, 0, fd.access_flags().as_int());
 943   JVMCIENV->put_int_at(info, 1, fd.offset());
 944   JVMCIENV->put_int_at(info, 2, fd.index());
 945   JVMCIENV->put_int_at(info, 3, fd.field_flags().as_uint());
 946   JVMCIKlassHandle handle(THREAD, fd.field_holder());
 947   JVMCIObject field_holder = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
 948   return JVMCIENV->get_jobject(field_holder);
 949 C2V_END
 950 
 951 C2V_VMENTRY_0(jint, getVtableIndexForInterfaceMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
 952   Klass* klass = UNPACK_PAIR(Klass, klass);
 953   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
 954   InstanceKlass* holder = method->method_holder();
 955   if (klass->is_interface()) {
 956     JVMCI_THROW_MSG_0(InternalError, err_msg("Interface %s should be handled in Java code", klass->external_name()));
 957   }
 958   if (!holder->is_interface()) {
 959     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()));
 960   }
 961   if (!klass->is_instance_klass()) {
 962     JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be instance klass", klass->external_name()));
 963   }
 964   if (!InstanceKlass::cast(klass)->is_linked()) {
 965     JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be linked", klass->external_name()));
 966   }
 967   if (!klass->is_subtype_of(holder)) {
 968     JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s does not implement interface %s", klass->external_name(), holder->external_name()));
 969   }
 970   return LinkResolver::vtable_index_of_interface_method(klass, method);
 971 C2V_END
 972 
 973 C2V_VMENTRY_NULL(jobject, resolveMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(receiver), ARGUMENT_PAIR(method), ARGUMENT_PAIR(caller)))
 974   Klass* recv_klass = UNPACK_PAIR(Klass, receiver);
 975   Klass* caller_klass = UNPACK_PAIR(Klass, caller);
 976   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
 977 
 978   Klass* resolved     = method->method_holder();
 979   Symbol* h_name      = method->name();
 980   Symbol* h_signature = method->signature();
 981 
 982   if (MethodHandles::is_signature_polymorphic_method(method())) {
 983       // Signature polymorphic methods are already resolved, JVMCI just returns null in this case.
 984       return nullptr;
 985   }
 986 
 987   if (method->name() == vmSymbols::clone_name() &&
 988       resolved == vmClasses::Object_klass() &&
 989       recv_klass->is_array_klass()) {
 990     // Resolution of the clone method on arrays always returns Object.clone even though that method
 991     // has protected access.  There's some trickery in the access checking to make this all work out
 992     // so it's necessary to pass in the array class as the resolved class to properly trigger this.
 993     // Otherwise it's impossible to resolve the array clone methods through JVMCI.  See
 994     // LinkResolver::check_method_accessability for the matching logic.
 995     resolved = recv_klass;
 996   }
 997 
 998   LinkInfo link_info(resolved, h_name, h_signature, caller_klass);
 999   Method* m = nullptr;
1000   // Only do exact lookup if receiver klass has been linked.  Otherwise,
1001   // the vtable has not been setup, and the LinkResolver will fail.
1002   if (recv_klass->is_array_klass() ||
1003       (InstanceKlass::cast(recv_klass)->is_linked() && !recv_klass->is_interface())) {
1004     if (resolved->is_interface()) {
1005       m = LinkResolver::resolve_interface_call_or_null(recv_klass, link_info);
1006     } else {
1007       m = LinkResolver::resolve_virtual_call_or_null(recv_klass, link_info);
1008     }
1009   }
1010 
1011   if (m == nullptr) {
1012     // Return null if there was a problem with lookup (uninitialized class, etc.)
1013     return nullptr;
1014   }
1015 
1016   JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, m), JVMCI_CHECK_NULL);
1017   return JVMCIENV->get_jobject(result);
1018 C2V_END
1019 
1020 C2V_VMENTRY_0(jboolean, hasFinalizableSubclass,(JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1021   Klass* klass = UNPACK_PAIR(Klass, klass);
1022   assert(klass != nullptr, "method must not be called for primitive types");
1023   if (!klass->is_instance_klass()) {
1024     return false;
1025   }
1026   InstanceKlass* iklass = InstanceKlass::cast(klass);
1027   return Dependencies::find_finalizable_subclass(iklass) != nullptr;
1028 C2V_END
1029 
1030 C2V_VMENTRY_NULL(jobject, getClassInitializer, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1031   Klass* klass = UNPACK_PAIR(Klass, klass);
1032   if (!klass->is_instance_klass()) {
1033     return nullptr;
1034   }
1035   InstanceKlass* iklass = InstanceKlass::cast(klass);
1036   methodHandle clinit(THREAD, iklass->class_initializer());
1037   JVMCIObject result = JVMCIENV->get_jvmci_method(clinit, JVMCI_CHECK_NULL);
1038   return JVMCIENV->get_jobject(result);
1039 C2V_END
1040 
1041 C2V_VMENTRY_0(jlong, getMaxCallTargetOffset, (JNIEnv* env, jobject, jlong addr))
1042   address target_addr = (address) addr;
1043   if (target_addr != 0x0) {
1044     int64_t off_low = (int64_t)target_addr - ((int64_t)CodeCache::low_bound() + sizeof(int));
1045     int64_t off_high = (int64_t)target_addr - ((int64_t)CodeCache::high_bound() + sizeof(int));
1046     return MAX2(ABS(off_low), ABS(off_high));
1047   }
1048   return -1;
1049 C2V_END
1050 
1051 C2V_VMENTRY(void, setNotInlinableOrCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1052   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1053   method->set_is_not_c1_compilable();
1054   method->set_is_not_c2_compilable();
1055   method->set_dont_inline(true);
1056 C2V_END
1057 
1058 C2V_VMENTRY_0(jint, getInstallCodeFlags, (JNIEnv *env, jobject))
1059   int flags = 0;
1060 #ifndef PRODUCT
1061   flags |= 0x0001; // VM will install block comments
1062   flags |= 0x0004; // Enable HotSpotJVMCIRuntime.Option.CodeSerializationTypeInfo if not explicitly set
1063 #endif
1064   if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
1065     // VM needs to track method dependencies
1066     flags |= 0x0002;
1067   }
1068   return flags;
1069 C2V_END
1070 
1071 C2V_VMENTRY_0(jint, installCode0, (JNIEnv *env, jobject,
1072     jlong compiled_code_buffer,
1073     jlong serialization_ns,
1074     bool with_type_info,
1075     jobject compiled_code,
1076     jobjectArray object_pool,
1077     jobject installed_code,
1078     jlong failed_speculations_address,
1079     jbyteArray speculations_obj))
1080   HandleMark hm(THREAD);
1081   JNIHandleMark jni_hm(thread);
1082 
1083   JVMCIObject compiled_code_handle = JVMCIENV->wrap(compiled_code);
1084   objArrayHandle object_pool_handle(thread, JVMCIENV->is_hotspot() ? (objArrayOop) JNIHandles::resolve(object_pool) : nullptr);
1085 
1086   CodeBlob* cb = nullptr;
1087   JVMCIObject installed_code_handle = JVMCIENV->wrap(installed_code);
1088   JVMCIPrimitiveArray speculations_handle = JVMCIENV->wrap(speculations_obj);
1089 
1090   int speculations_len = JVMCIENV->get_length(speculations_handle);
1091   char* speculations = NEW_RESOURCE_ARRAY(char, speculations_len);
1092   JVMCIENV->copy_bytes_to(speculations_handle, (jbyte*) speculations, 0, speculations_len);
1093 
1094   JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK_JNI_ERR);
1095   JVMCICompiler::CodeInstallStats* stats = compiler->code_install_stats(!thread->is_Compiler_thread());
1096   elapsedTimer *timer = stats->timer();
1097   timer->add_nanoseconds(serialization_ns);
1098   TraceTime install_time("installCode", timer);
1099 
1100   CodeInstaller installer(JVMCIENV);
1101 
1102   JVMCI::CodeInstallResult result = installer.install(compiler,
1103       compiled_code_buffer,
1104       with_type_info,
1105       compiled_code_handle,
1106       object_pool_handle,
1107       cb,
1108       installed_code_handle,
1109       (FailedSpeculation**)(address) failed_speculations_address,
1110       speculations,
1111       speculations_len,
1112       JVMCI_CHECK_0);
1113 
1114   if (PrintCodeCacheOnCompilation) {
1115     stringStream s;
1116     // Dump code cache into a buffer before locking the tty,
1117     {
1118       MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1119       CodeCache::print_summary(&s, false);
1120     }
1121     ttyLocker ttyl;
1122     tty->print_raw_cr(s.freeze());
1123   }
1124 
1125   if (result != JVMCI::ok) {
1126     assert(cb == nullptr, "should be");
1127   } else {
1128     stats->on_install(cb);
1129     if (installed_code_handle.is_non_null()) {
1130       if (cb->is_nmethod()) {
1131         assert(JVMCIENV->isa_HotSpotNmethod(installed_code_handle), "wrong type");
1132         // Clear the link to an old nmethod first
1133         JVMCIObject nmethod_mirror = installed_code_handle;
1134         JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, true, JVMCI_CHECK_0);
1135       } else {
1136         assert(JVMCIENV->isa_InstalledCode(installed_code_handle), "wrong type");
1137       }
1138       // Initialize the link to the new code blob
1139       JVMCIENV->initialize_installed_code(installed_code_handle, cb, JVMCI_CHECK_0);
1140     }
1141   }
1142   return result;
1143 C2V_END
1144 
1145 C2V_VMENTRY(void, resetCompilationStatistics, (JNIEnv* env, jobject))
1146   JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK);
1147   CompilerStatistics* stats = compiler->stats();
1148   stats->_standard.reset();
1149   stats->_osr.reset();
1150 C2V_END
1151 
1152 C2V_VMENTRY_NULL(jobject, disassembleCodeBlob, (JNIEnv* env, jobject, jobject installedCode))
1153   HandleMark hm(THREAD);
1154 
1155   if (installedCode == nullptr) {
1156     JVMCI_THROW_MSG_NULL(NullPointerException, "installedCode is null");
1157   }
1158 
1159   JVMCIObject installedCodeObject = JVMCIENV->wrap(installedCode);
1160   CodeBlob* cb = JVMCIENV->get_code_blob(installedCodeObject);
1161   if (cb == nullptr) {
1162     return nullptr;
1163   }
1164 
1165   // We don't want the stringStream buffer to resize during disassembly as it
1166   // uses scoped resource memory. If a nested function called during disassembly uses
1167   // a ResourceMark and the buffer expands within the scope of the mark,
1168   // the buffer becomes garbage when that scope is exited. Experience shows that
1169   // the disassembled code is typically about 10x the code size so a fixed buffer
1170   // sized to 20x code size plus a fixed amount for header info should be sufficient.
1171   int bufferSize = cb->code_size() * 20 + 1024;
1172   char* buffer = NEW_RESOURCE_ARRAY(char, bufferSize);
1173   stringStream st(buffer, bufferSize);
1174   Disassembler::decode(cb, &st);
1175   if (st.size() <= 0) {
1176     return nullptr;
1177   }
1178 
1179   JVMCIObject result = JVMCIENV->create_string(st.as_string(), JVMCI_CHECK_NULL);
1180   return JVMCIENV->get_jobject(result);
1181 C2V_END
1182 
1183 C2V_VMENTRY_NULL(jobject, getStackTraceElement, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int bci))
1184   HandleMark hm(THREAD);
1185 
1186   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1187   JVMCIObject element = JVMCIENV->new_StackTraceElement(method, bci, JVMCI_CHECK_NULL);
1188   return JVMCIENV->get_jobject(element);
1189 C2V_END
1190 
1191 C2V_VMENTRY_NULL(jobject, executeHotSpotNmethod, (JNIEnv* env, jobject, jobject args, jobject hs_nmethod))
1192   // The incoming arguments array would have to contain JavaConstants instead of regular objects
1193   // and the return value would have to be wrapped as a JavaConstant.
1194   requireInHotSpot("executeHotSpotNmethod", JVMCI_CHECK_NULL);
1195 
1196   HandleMark hm(THREAD);
1197 
1198   JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod);
1199   nmethod* nm = JVMCIENV->get_nmethod(nmethod_mirror);
1200   if (nm == nullptr || !nm->is_in_use()) {
1201     JVMCI_THROW_NULL(InvalidInstalledCodeException);
1202   }
1203   methodHandle mh(THREAD, nm->method());
1204   Symbol* signature = mh->signature();
1205   JavaCallArguments jca(mh->size_of_parameters());
1206 
1207   JavaArgumentUnboxer jap(signature, &jca, (arrayOop) JNIHandles::resolve(args), mh->is_static());
1208   JavaValue result(jap.return_type());
1209   jca.set_alternative_target(Handle(THREAD, JNIHandles::resolve(nmethod_mirror.as_jobject())));
1210   JavaCalls::call(&result, mh, &jca, CHECK_NULL);
1211 
1212   if (jap.return_type() == T_VOID) {
1213     return nullptr;
1214   } else if (is_reference_type(jap.return_type())) {
1215     return JNIHandles::make_local(THREAD, result.get_oop());
1216   } else {
1217     jvalue *value = (jvalue *) result.get_value_addr();
1218     // Narrow the value down if required (Important on big endian machines)
1219     switch (jap.return_type()) {
1220       case T_BOOLEAN:
1221        value->z = (jboolean) value->i;
1222        break;
1223       case T_BYTE:
1224        value->b = (jbyte) value->i;
1225        break;
1226       case T_CHAR:
1227        value->c = (jchar) value->i;
1228        break;
1229       case T_SHORT:
1230        value->s = (jshort) value->i;
1231        break;
1232       default:
1233         break;
1234     }
1235     JVMCIObject o = JVMCIENV->create_box(jap.return_type(), value, JVMCI_CHECK_NULL);
1236     return JVMCIENV->get_jobject(o);
1237   }
1238 C2V_END
1239 
1240 C2V_VMENTRY_NULL(jlongArray, getLineNumberTable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1241   Method* method = UNPACK_PAIR(Method, method);
1242   if (!method->has_linenumber_table()) {
1243     return nullptr;
1244   }
1245   u2 num_entries = 0;
1246   CompressedLineNumberReadStream streamForSize(method->compressed_linenumber_table());
1247   while (streamForSize.read_pair()) {
1248     num_entries++;
1249   }
1250 
1251   CompressedLineNumberReadStream stream(method->compressed_linenumber_table());
1252   JVMCIPrimitiveArray result = JVMCIENV->new_longArray(2 * num_entries, JVMCI_CHECK_NULL);
1253 
1254   int i = 0;
1255   jlong value;
1256   while (stream.read_pair()) {
1257     value = ((jlong) stream.bci());
1258     JVMCIENV->put_long_at(result, i, value);
1259     value = ((jlong) stream.line());
1260     JVMCIENV->put_long_at(result, i + 1, value);
1261     i += 2;
1262   }
1263 
1264   return (jlongArray) JVMCIENV->get_jobject(result);
1265 C2V_END
1266 
1267 C2V_VMENTRY_0(jlong, getLocalVariableTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1268   Method* method = UNPACK_PAIR(Method, method);
1269   if (!method->has_localvariable_table()) {
1270     return 0;
1271   }
1272   return (jlong) (address) method->localvariable_table_start();
1273 C2V_END
1274 
1275 C2V_VMENTRY_0(jint, getLocalVariableTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1276   Method* method = UNPACK_PAIR(Method, method);
1277   return method->localvariable_table_length();
1278 C2V_END
1279 
1280 C2V_VMENTRY(void, reprofile, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1281   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1282   MethodCounters* mcs = method->method_counters();
1283   if (mcs != nullptr) {
1284     mcs->clear_counters();
1285   }
1286   NOT_PRODUCT(method->set_compiled_invocation_count(0));
1287 
1288   CompiledMethod* code = method->code();
1289   if (code != nullptr) {
1290     code->make_not_entrant();
1291   }
1292 
1293   MethodData* method_data = method->method_data();
1294   if (method_data == nullptr) {
1295     ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
1296     method_data = MethodData::allocate(loader_data, method, CHECK);
1297     method->set_method_data(method_data);
1298   } else {
1299     method_data->initialize();
1300   }
1301 C2V_END
1302 
1303 
1304 C2V_VMENTRY(void, invalidateHotSpotNmethod, (JNIEnv* env, jobject, jobject hs_nmethod, jboolean deoptimize))
1305   JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod);
1306   JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, deoptimize, JVMCI_CHECK);
1307 C2V_END
1308 
1309 C2V_VMENTRY_NULL(jlongArray, collectCounters, (JNIEnv* env, jobject))
1310   // Returns a zero length array if counters aren't enabled
1311   JVMCIPrimitiveArray array = JVMCIENV->new_longArray(JVMCICounterSize, JVMCI_CHECK_NULL);
1312   if (JVMCICounterSize > 0) {
1313     jlong* temp_array = NEW_RESOURCE_ARRAY(jlong, JVMCICounterSize);
1314     JavaThread::collect_counters(temp_array, JVMCICounterSize);
1315     JVMCIENV->copy_longs_from(temp_array, array, 0, JVMCICounterSize);
1316   }
1317   return (jlongArray) JVMCIENV->get_jobject(array);
1318 C2V_END
1319 
1320 C2V_VMENTRY_0(jint, getCountersSize, (JNIEnv* env, jobject))
1321   return (jint) JVMCICounterSize;
1322 C2V_END
1323 
1324 C2V_VMENTRY_0(jboolean, setCountersSize, (JNIEnv* env, jobject, jint new_size))
1325   return JavaThread::resize_all_jvmci_counters(new_size);
1326 C2V_END
1327 
1328 C2V_VMENTRY_0(jint, allocateCompileId, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci))
1329   HandleMark hm(THREAD);
1330   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1331   if (method.is_null()) {
1332     JVMCI_THROW_0(NullPointerException);
1333   }
1334   if (entry_bci >= method->code_size() || entry_bci < -1) {
1335     JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Unexpected bci %d", entry_bci));
1336   }
1337   return CompileBroker::assign_compile_id_unlocked(THREAD, method, entry_bci);
1338 C2V_END
1339 
1340 
1341 C2V_VMENTRY_0(jboolean, isMature, (JNIEnv* env, jobject, jlong method_data_pointer))
1342   MethodData* mdo = (MethodData*) method_data_pointer;
1343   return mdo != nullptr && mdo->is_mature();
1344 C2V_END
1345 
1346 C2V_VMENTRY_0(jboolean, hasCompiledCodeForOSR, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci, int comp_level))
1347   Method* method = UNPACK_PAIR(Method, method);
1348   return method->lookup_osr_nmethod_for(entry_bci, comp_level, true) != nullptr;
1349 C2V_END
1350 
1351 C2V_VMENTRY_NULL(jobject, getSymbol, (JNIEnv* env, jobject, jlong symbol))
1352   JVMCIObject sym = JVMCIENV->create_string((Symbol*)(address)symbol, JVMCI_CHECK_NULL);
1353   return JVMCIENV->get_jobject(sym);
1354 C2V_END
1355 
1356 C2V_VMENTRY_NULL(jobject, getSignatureName, (JNIEnv* env, jobject, jlong klass_pointer))
1357   Klass* klass = UNPACK_PAIR(Klass, klass);
1358   JVMCIObject signature = JVMCIENV->create_string(klass->signature_name(), JVMCI_CHECK_NULL);
1359   return JVMCIENV->get_jobject(signature);
1360 C2V_END
1361 
1362 /*
1363  * Used by matches() to convert a ResolvedJavaMethod[] to an array of Method*.
1364  */
1365 GrowableArray<Method*>* init_resolved_methods(jobjectArray methods, JVMCIEnv* JVMCIENV) {
1366   objArrayOop methods_oop = (objArrayOop) JNIHandles::resolve(methods);
1367   GrowableArray<Method*>* resolved_methods = new GrowableArray<Method*>(methods_oop->length());
1368   for (int i = 0; i < methods_oop->length(); i++) {
1369     oop resolved = methods_oop->obj_at(i);
1370     Method* resolved_method = nullptr;
1371     if (resolved->klass() == HotSpotJVMCI::HotSpotResolvedJavaMethodImpl::klass()) {
1372       resolved_method = HotSpotJVMCI::asMethod(JVMCIENV, resolved);
1373     }
1374     resolved_methods->append(resolved_method);
1375   }
1376   return resolved_methods;
1377 }
1378 
1379 /*
1380  * Used by c2v_iterateFrames to check if `method` matches one of the ResolvedJavaMethods in the `methods` array.
1381  * The ResolvedJavaMethod[] array is converted to a Method* array that is then cached in the resolved_methods_ref in/out parameter.
1382  * In case of a match, the matching ResolvedJavaMethod is returned in matched_jvmci_method_ref.
1383  */
1384 bool matches(jobjectArray methods, Method* method, GrowableArray<Method*>** resolved_methods_ref, Handle* matched_jvmci_method_ref, Thread* THREAD, JVMCIEnv* JVMCIENV) {
1385   GrowableArray<Method*>* resolved_methods = *resolved_methods_ref;
1386   if (resolved_methods == nullptr) {
1387     resolved_methods = init_resolved_methods(methods, JVMCIENV);
1388     *resolved_methods_ref = resolved_methods;
1389   }
1390   assert(method != nullptr, "method should not be null");
1391   assert(resolved_methods->length() == ((objArrayOop) JNIHandles::resolve(methods))->length(), "arrays must have the same length");
1392   for (int i = 0; i < resolved_methods->length(); i++) {
1393     Method* m = resolved_methods->at(i);
1394     if (m == method) {
1395       *matched_jvmci_method_ref = Handle(THREAD, ((objArrayOop) JNIHandles::resolve(methods))->obj_at(i));
1396       return true;
1397     }
1398   }
1399   return false;
1400 }
1401 
1402 /*
1403  * Resolves an interface call to a concrete method handle.
1404  */
1405 methodHandle resolve_interface_call(Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
1406   CallInfo callinfo;
1407   Handle receiver = args->receiver();
1408   Klass* recvrKlass = receiver.is_null() ? (Klass*)nullptr : receiver->klass();
1409   LinkInfo link_info(spec_klass, name, signature);
1410   LinkResolver::resolve_interface_call(
1411           callinfo, receiver, recvrKlass, link_info, true, CHECK_(methodHandle()));
1412   methodHandle method(THREAD, callinfo.selected_method());
1413   assert(method.not_null(), "should have thrown exception");
1414   return method;
1415 }
1416 
1417 /*
1418  * Used by c2v_iterateFrames to make a new vframeStream at the given compiled frame id (stack pointer) and vframe id.
1419  */
1420 void resync_vframestream_to_compiled_frame(vframeStream& vfst, intptr_t* stack_pointer, int vframe_id, JavaThread* thread, TRAPS) {
1421   vfst = vframeStream(thread);
1422   while (vfst.frame_id() != stack_pointer && !vfst.at_end()) {
1423     vfst.next();
1424   }
1425   if (vfst.frame_id() != stack_pointer) {
1426     THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "stack frame not found after deopt")
1427   }
1428   if (vfst.is_interpreted_frame()) {
1429     THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "compiled stack frame expected")
1430   }
1431   while (vfst.vframe_id() != vframe_id) {
1432     if (vfst.at_end()) {
1433       THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "vframe not found after deopt")
1434     }
1435     vfst.next();
1436     assert(!vfst.is_interpreted_frame(), "Wrong frame type");
1437   }
1438 }
1439 
1440 /*
1441  * Used by c2v_iterateFrames. Returns an array of any unallocated scope objects or null if none.
1442  */
1443 GrowableArray<ScopeValue*>* get_unallocated_objects_or_null(GrowableArray<ScopeValue*>* scope_objects) {
1444   GrowableArray<ScopeValue*>* unallocated = nullptr;
1445   for (int i = 0; i < scope_objects->length(); i++) {
1446     ObjectValue* sv = (ObjectValue*) scope_objects->at(i);
1447     if (sv->value().is_null()) {
1448       if (unallocated == nullptr) {
1449         unallocated = new GrowableArray<ScopeValue*>(scope_objects->length());
1450       }
1451       unallocated->append(sv);
1452     }
1453   }
1454   return unallocated;
1455 }
1456 
1457 C2V_VMENTRY_NULL(jobject, iterateFrames, (JNIEnv* env, jobject compilerToVM, jobjectArray initial_methods, jobjectArray match_methods, jint initialSkip, jobject visitor_handle))
1458 
1459   if (!thread->has_last_Java_frame()) {
1460     return nullptr;
1461   }
1462   Handle visitor(THREAD, JNIHandles::resolve_non_null(visitor_handle));
1463 
1464   requireInHotSpot("iterateFrames", JVMCI_CHECK_NULL);
1465 
1466   HotSpotJVMCI::HotSpotStackFrameReference::klass()->initialize(CHECK_NULL);
1467 
1468   vframeStream vfst(thread);
1469   jobjectArray methods = initial_methods;
1470   methodHandle visitor_method;
1471   GrowableArray<Method*>* resolved_methods = nullptr;
1472 
1473   while (!vfst.at_end()) { // frame loop
1474     bool realloc_called = false;
1475     intptr_t* frame_id = vfst.frame_id();
1476 
1477     // Previous compiledVFrame of this frame; use with at_scope() to reuse scope object pool.
1478     compiledVFrame* prev_cvf = nullptr;
1479 
1480     for (; !vfst.at_end() && vfst.frame_id() == frame_id; vfst.next()) { // vframe loop
1481       int frame_number = 0;
1482       Method *method = vfst.method();
1483       int bci = vfst.bci();
1484 
1485       Handle matched_jvmci_method;
1486       if (methods == nullptr || matches(methods, method, &resolved_methods, &matched_jvmci_method, THREAD, JVMCIENV)) {
1487         if (initialSkip > 0) {
1488           initialSkip--;
1489           continue;
1490         }
1491         javaVFrame* vf;
1492         if (prev_cvf != nullptr && prev_cvf->frame_pointer()->id() == frame_id) {
1493           assert(prev_cvf->is_compiled_frame(), "expected compiled Java frame");
1494           vf = prev_cvf->at_scope(vfst.decode_offset(), vfst.vframe_id());
1495         } else {
1496           vf = vfst.asJavaVFrame();
1497         }
1498 
1499         StackValueCollection* locals = nullptr;
1500         typeArrayHandle localIsVirtual_h;
1501         if (vf->is_compiled_frame()) {
1502           // compiled method frame
1503           compiledVFrame* cvf = compiledVFrame::cast(vf);
1504 
1505           ScopeDesc* scope = cvf->scope();
1506           // native wrappers do not have a scope
1507           if (scope != nullptr && scope->objects() != nullptr) {
1508             prev_cvf = cvf;
1509 
1510             GrowableArray<ScopeValue*>* objects = nullptr;
1511             if (!realloc_called) {
1512               objects = scope->objects();
1513             } else {
1514               // some object might already have been re-allocated, only reallocate the non-allocated ones
1515               objects = get_unallocated_objects_or_null(scope->objects());
1516             }
1517 
1518             if (objects != nullptr) {
1519               RegisterMap reg_map(vf->register_map());
1520               bool realloc_failures = Deoptimization::realloc_objects(thread, vf->frame_pointer(), &reg_map, objects, CHECK_NULL);
1521               Deoptimization::reassign_fields(vf->frame_pointer(), &reg_map, objects, realloc_failures, false);
1522               realloc_called = true;
1523             }
1524 
1525             GrowableArray<ScopeValue*>* local_values = scope->locals();
1526             for (int i = 0; i < local_values->length(); i++) {
1527               ScopeValue* value = local_values->at(i);
1528               assert(!value->is_object_merge(), "Should not be.");
1529               if (value->is_object()) {
1530                 if (localIsVirtual_h.is_null()) {
1531                   typeArrayOop array_oop = oopFactory::new_boolArray(local_values->length(), CHECK_NULL);
1532                   localIsVirtual_h = typeArrayHandle(THREAD, array_oop);
1533                 }
1534                 localIsVirtual_h->bool_at_put(i, true);
1535               }
1536             }
1537           }
1538 
1539           locals = cvf->locals();
1540           frame_number = cvf->vframe_id();
1541         } else {
1542           // interpreted method frame
1543           interpretedVFrame* ivf = interpretedVFrame::cast(vf);
1544 
1545           locals = ivf->locals();
1546         }
1547         assert(bci == vf->bci(), "wrong bci");
1548         assert(method == vf->method(), "wrong method");
1549 
1550         Handle frame_reference = HotSpotJVMCI::HotSpotStackFrameReference::klass()->allocate_instance_handle(CHECK_NULL);
1551         HotSpotJVMCI::HotSpotStackFrameReference::set_bci(JVMCIENV, frame_reference(), bci);
1552         if (matched_jvmci_method.is_null()) {
1553           methodHandle mh(THREAD, method);
1554           JVMCIObject jvmci_method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
1555           matched_jvmci_method = Handle(THREAD, JNIHandles::resolve(jvmci_method.as_jobject()));
1556         }
1557         HotSpotJVMCI::HotSpotStackFrameReference::set_method(JVMCIENV, frame_reference(), matched_jvmci_method());
1558         HotSpotJVMCI::HotSpotStackFrameReference::set_localIsVirtual(JVMCIENV, frame_reference(), localIsVirtual_h());
1559 
1560         HotSpotJVMCI::HotSpotStackFrameReference::set_compilerToVM(JVMCIENV, frame_reference(), JNIHandles::resolve(compilerToVM));
1561         HotSpotJVMCI::HotSpotStackFrameReference::set_stackPointer(JVMCIENV, frame_reference(), (jlong) frame_id);
1562         HotSpotJVMCI::HotSpotStackFrameReference::set_frameNumber(JVMCIENV, frame_reference(), frame_number);
1563 
1564         // initialize the locals array
1565         objArrayOop array_oop = oopFactory::new_objectArray(locals->size(), CHECK_NULL);
1566         objArrayHandle array(THREAD, array_oop);
1567         for (int i = 0; i < locals->size(); i++) {
1568           StackValue* var = locals->at(i);
1569           if (var->type() == T_OBJECT) {
1570             array->obj_at_put(i, locals->at(i)->get_obj()());
1571           }
1572         }
1573         HotSpotJVMCI::HotSpotStackFrameReference::set_locals(JVMCIENV, frame_reference(), array());
1574         HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, frame_reference(), JNI_FALSE);
1575 
1576         JavaValue result(T_OBJECT);
1577         JavaCallArguments args(visitor);
1578         if (visitor_method.is_null()) {
1579           visitor_method = resolve_interface_call(HotSpotJVMCI::InspectedFrameVisitor::klass(), vmSymbols::visitFrame_name(), vmSymbols::visitFrame_signature(), &args, CHECK_NULL);
1580         }
1581 
1582         args.push_oop(frame_reference);
1583         JavaCalls::call(&result, visitor_method, &args, CHECK_NULL);
1584         if (result.get_oop() != nullptr) {
1585           return JNIHandles::make_local(thread, result.get_oop());
1586         }
1587         if (methods == initial_methods) {
1588           methods = match_methods;
1589           if (resolved_methods != nullptr && JNIHandles::resolve(match_methods) != JNIHandles::resolve(initial_methods)) {
1590             resolved_methods = nullptr;
1591           }
1592         }
1593         assert(initialSkip == 0, "There should be no match before initialSkip == 0");
1594         if (HotSpotJVMCI::HotSpotStackFrameReference::objectsMaterialized(JVMCIENV, frame_reference()) == JNI_TRUE) {
1595           // the frame has been deoptimized, we need to re-synchronize the frame and vframe
1596           prev_cvf = nullptr;
1597           intptr_t* stack_pointer = (intptr_t*) HotSpotJVMCI::HotSpotStackFrameReference::stackPointer(JVMCIENV, frame_reference());
1598           resync_vframestream_to_compiled_frame(vfst, stack_pointer, frame_number, thread, CHECK_NULL);
1599         }
1600       }
1601     } // end of vframe loop
1602   } // end of frame loop
1603 
1604   // the end was reached without finding a matching method
1605   return nullptr;
1606 C2V_END
1607 
1608 C2V_VMENTRY_0(int, decodeIndyIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint encoded_indy_index, jboolean resolve))
1609   if (!ConstantPool::is_invokedynamic_index(encoded_indy_index)) {
1610     JVMCI_THROW_MSG_0(IllegalStateException, err_msg("not an encoded indy index %d", encoded_indy_index));
1611   }
1612 
1613   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1614   CallInfo callInfo;
1615   int indy_index = cp->decode_invokedynamic_index(encoded_indy_index);
1616   if (resolve) {
1617     LinkResolver::resolve_invoke(callInfo, Handle(), cp, encoded_indy_index, Bytecodes::_invokedynamic, CHECK_0);
1618     cp->cache()->set_dynamic_call(callInfo, indy_index);
1619   }
1620   return cp->resolved_indy_entry_at(indy_index)->constant_pool_index();
1621 C2V_END
1622 
1623 C2V_VMENTRY_0(int, decodeFieldIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint field_index))
1624   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1625   if (field_index < 0 || field_index >= cp->resolved_field_entries_length()) {
1626     JVMCI_THROW_MSG_0(IllegalStateException, err_msg("invalid field index %d", field_index));
1627   }
1628   return cp->resolved_field_entry_at(field_index)->constant_pool_index();
1629 C2V_END
1630 
1631 C2V_VMENTRY(void, resolveInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
1632   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1633   Klass* holder = cp->klass_ref_at(index, Bytecodes::_invokehandle, CHECK);
1634   Symbol* name = cp->name_ref_at(index, Bytecodes::_invokehandle);
1635   if (MethodHandles::is_signature_polymorphic_name(holder, name)) {
1636     CallInfo callInfo;
1637     LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, Bytecodes::_invokehandle, CHECK);
1638     ConstantPoolCacheEntry* cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index));
1639     cp_cache_entry->set_method_handle(cp, callInfo);
1640   }
1641 C2V_END
1642 
1643 C2V_VMENTRY_0(jint, isResolvedInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
1644   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1645   ConstantPoolCacheEntry* cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index));
1646   if (cp_cache_entry->is_resolved(Bytecodes::_invokehandle)) {
1647     // MethodHandle.invoke* --> LambdaForm?
1648     ResourceMark rm;
1649 
1650     LinkInfo link_info(cp, index, Bytecodes::_invokehandle, CATCH);
1651 
1652     Klass* resolved_klass = link_info.resolved_klass();
1653 
1654     Symbol* name_sym = cp->name_ref_at(index, Bytecodes::_invokehandle);
1655 
1656     vmassert(MethodHandles::is_method_handle_invoke_name(resolved_klass, name_sym), "!");
1657     vmassert(MethodHandles::is_signature_polymorphic_name(resolved_klass, name_sym), "!");
1658 
1659     methodHandle adapter_method(THREAD, cp_cache_entry->f1_as_method());
1660 
1661     methodHandle resolved_method(adapter_method);
1662 
1663     // Can we treat it as a regular invokevirtual?
1664     if (resolved_method->method_holder() == resolved_klass && resolved_method->name() == name_sym) {
1665       vmassert(!resolved_method->is_static(),"!");
1666       vmassert(MethodHandles::is_signature_polymorphic_method(resolved_method()),"!");
1667       vmassert(!MethodHandles::is_signature_polymorphic_static(resolved_method->intrinsic_id()), "!");
1668       vmassert(cp_cache_entry->appendix_if_resolved(cp) == nullptr, "!");
1669 
1670       methodHandle m(THREAD, LinkResolver::linktime_resolve_virtual_method_or_null(link_info));
1671       vmassert(m == resolved_method, "!!");
1672       return -1;
1673     }
1674 
1675     return Bytecodes::_invokevirtual;
1676   }
1677   if (cp->is_invokedynamic_index(index)) {
1678     if (cp->resolved_indy_entry_at(cp->decode_cpcache_index(index))->is_resolved()) {
1679       return Bytecodes::_invokedynamic;
1680     }
1681   }
1682   return -1;
1683 C2V_END
1684 
1685 
1686 C2V_VMENTRY_NULL(jobject, getSignaturePolymorphicHolders, (JNIEnv* env, jobject))
1687   JVMCIObjectArray holders = JVMCIENV->new_String_array(2, JVMCI_CHECK_NULL);
1688   JVMCIObject mh = JVMCIENV->create_string("Ljava/lang/invoke/MethodHandle;", JVMCI_CHECK_NULL);
1689   JVMCIObject vh = JVMCIENV->create_string("Ljava/lang/invoke/VarHandle;", JVMCI_CHECK_NULL);
1690   JVMCIENV->put_object_at(holders, 0, mh);
1691   JVMCIENV->put_object_at(holders, 1, vh);
1692   return JVMCIENV->get_jobject(holders);
1693 C2V_END
1694 
1695 C2V_VMENTRY_0(jboolean, shouldDebugNonSafepoints, (JNIEnv* env, jobject))
1696   //see compute_recording_non_safepoints in debugInfroRec.cpp
1697   if (JvmtiExport::should_post_compiled_method_load() && FLAG_IS_DEFAULT(DebugNonSafepoints)) {
1698     return true;
1699   }
1700   return DebugNonSafepoints;
1701 C2V_END
1702 
1703 // public native void materializeVirtualObjects(HotSpotStackFrameReference stackFrame, boolean invalidate);
1704 C2V_VMENTRY(void, materializeVirtualObjects, (JNIEnv* env, jobject, jobject _hs_frame, bool invalidate))
1705   JVMCIObject hs_frame = JVMCIENV->wrap(_hs_frame);
1706   if (hs_frame.is_null()) {
1707     JVMCI_THROW_MSG(NullPointerException, "stack frame is null");
1708   }
1709 
1710   requireInHotSpot("materializeVirtualObjects", JVMCI_CHECK);
1711 
1712   JVMCIENV->HotSpotStackFrameReference_initialize(JVMCI_CHECK);
1713 
1714   // look for the given stack frame
1715   StackFrameStream fst(thread, false /* update */, true /* process_frames */);
1716   intptr_t* stack_pointer = (intptr_t*) JVMCIENV->get_HotSpotStackFrameReference_stackPointer(hs_frame);
1717   while (fst.current()->id() != stack_pointer && !fst.is_done()) {
1718     fst.next();
1719   }
1720   if (fst.current()->id() != stack_pointer) {
1721     JVMCI_THROW_MSG(IllegalStateException, "stack frame not found");
1722   }
1723 
1724   if (invalidate) {
1725     if (!fst.current()->is_compiled_frame()) {
1726       JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected");
1727     }
1728     assert(fst.current()->cb()->is_nmethod(), "nmethod expected");
1729     ((nmethod*) fst.current()->cb())->make_not_entrant();
1730   }
1731   Deoptimization::deoptimize(thread, *fst.current(), Deoptimization::Reason_none);
1732   // look for the frame again as it has been updated by deopt (pc, deopt state...)
1733   StackFrameStream fstAfterDeopt(thread, true /* update */, true /* process_frames */);
1734   while (fstAfterDeopt.current()->id() != stack_pointer && !fstAfterDeopt.is_done()) {
1735     fstAfterDeopt.next();
1736   }
1737   if (fstAfterDeopt.current()->id() != stack_pointer) {
1738     JVMCI_THROW_MSG(IllegalStateException, "stack frame not found after deopt");
1739   }
1740 
1741   vframe* vf = vframe::new_vframe(fstAfterDeopt.current(), fstAfterDeopt.register_map(), thread);
1742   if (!vf->is_compiled_frame()) {
1743     JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected");
1744   }
1745 
1746   GrowableArray<compiledVFrame*>* virtualFrames = new GrowableArray<compiledVFrame*>(10);
1747   while (true) {
1748     assert(vf->is_compiled_frame(), "Wrong frame type");
1749     virtualFrames->push(compiledVFrame::cast(vf));
1750     if (vf->is_top()) {
1751       break;
1752     }
1753     vf = vf->sender();
1754   }
1755 
1756   int last_frame_number = JVMCIENV->get_HotSpotStackFrameReference_frameNumber(hs_frame);
1757   if (last_frame_number >= virtualFrames->length()) {
1758     JVMCI_THROW_MSG(IllegalStateException, "invalid frame number");
1759   }
1760 
1761   // Reallocate the non-escaping objects and restore their fields.
1762   assert (virtualFrames->at(last_frame_number)->scope() != nullptr,"invalid scope");
1763   GrowableArray<ScopeValue*>* objects = virtualFrames->at(last_frame_number)->scope()->objects();
1764 
1765   if (objects == nullptr) {
1766     // no objects to materialize
1767     return;
1768   }
1769 
1770   bool realloc_failures = Deoptimization::realloc_objects(thread, fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, CHECK);
1771   Deoptimization::reassign_fields(fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, realloc_failures, false);
1772 
1773   for (int frame_index = 0; frame_index < virtualFrames->length(); frame_index++) {
1774     compiledVFrame* cvf = virtualFrames->at(frame_index);
1775 
1776     GrowableArray<ScopeValue*>* scopedValues = cvf->scope()->locals();
1777     StackValueCollection* locals = cvf->locals();
1778     if (locals != nullptr) {
1779       for (int i2 = 0; i2 < locals->size(); i2++) {
1780         StackValue* var = locals->at(i2);
1781         assert(!scopedValues->at(i2)->is_object_merge(), "Should not be.");
1782         if (var->type() == T_OBJECT && scopedValues->at(i2)->is_object()) {
1783           jvalue val;
1784           val.l = cast_from_oop<jobject>(locals->at(i2)->get_obj()());
1785           cvf->update_local(T_OBJECT, i2, val);
1786         }
1787       }
1788     }
1789 
1790     GrowableArray<ScopeValue*>* scopeExpressions = cvf->scope()->expressions();
1791     StackValueCollection* expressions = cvf->expressions();
1792     if (expressions != nullptr) {
1793       for (int i2 = 0; i2 < expressions->size(); i2++) {
1794         StackValue* var = expressions->at(i2);
1795         assert(!scopeExpressions->at(i2)->is_object_merge(), "Should not be.");
1796         if (var->type() == T_OBJECT && scopeExpressions->at(i2)->is_object()) {
1797           jvalue val;
1798           val.l = cast_from_oop<jobject>(expressions->at(i2)->get_obj()());
1799           cvf->update_stack(T_OBJECT, i2, val);
1800         }
1801       }
1802     }
1803 
1804     GrowableArray<MonitorValue*>* scopeMonitors = cvf->scope()->monitors();
1805     GrowableArray<MonitorInfo*>* monitors = cvf->monitors();
1806     if (monitors != nullptr) {
1807       for (int i2 = 0; i2 < monitors->length(); i2++) {
1808         cvf->update_monitor(i2, monitors->at(i2));
1809       }
1810     }
1811   }
1812 
1813   // all locals are materialized by now
1814   JVMCIENV->set_HotSpotStackFrameReference_localIsVirtual(hs_frame, nullptr);
1815   // update the locals array
1816   JVMCIObjectArray array = JVMCIENV->get_HotSpotStackFrameReference_locals(hs_frame);
1817   StackValueCollection* locals = virtualFrames->at(last_frame_number)->locals();
1818   for (int i = 0; i < locals->size(); i++) {
1819     StackValue* var = locals->at(i);
1820     if (var->type() == T_OBJECT) {
1821       JVMCIENV->put_object_at(array, i, HotSpotJVMCI::wrap(locals->at(i)->get_obj()()));
1822     }
1823   }
1824   HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, hs_frame, JNI_TRUE);
1825 C2V_END
1826 
1827 // Use of tty does not require the current thread to be attached to the VM
1828 // so no need for a full C2V_VMENTRY transition.
1829 C2V_VMENTRY_PREFIX(void, writeDebugOutput, (JNIEnv* env, jobject, jlong buffer, jint length, bool flush))
1830   if (length <= 8) {
1831     tty->write((char*) &buffer, length);
1832   } else {
1833     tty->write((char*) buffer, length);
1834   }
1835   if (flush) {
1836     tty->flush();
1837   }
1838 C2V_END
1839 
1840 // Use of tty does not require the current thread to be attached to the VM
1841 // so no need for a full C2V_VMENTRY transition.
1842 C2V_VMENTRY_PREFIX(void, flushDebugOutput, (JNIEnv* env, jobject))
1843   tty->flush();
1844 C2V_END
1845 
1846 C2V_VMENTRY_0(jint, methodDataProfileDataSize, (JNIEnv* env, jobject, jlong method_data_pointer, jint position))
1847   MethodData* mdo = (MethodData*) method_data_pointer;
1848   ProfileData* profile_data = mdo->data_at(position);
1849   if (mdo->is_valid(profile_data)) {
1850     return profile_data->size_in_bytes();
1851   }
1852   // Java code should never directly access the extra data section
1853   JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Invalid profile data position %d", position));
1854 C2V_END
1855 
1856 C2V_VMENTRY_0(jint, methodDataExceptionSeen, (JNIEnv* env, jobject, jlong method_data_pointer, jint bci))
1857   MethodData* mdo = (MethodData*) method_data_pointer;
1858   MutexLocker mu(mdo->extra_data_lock());
1859   DataLayout* data    = mdo->extra_data_base();
1860   DataLayout* end   = mdo->args_data_limit();
1861   for (;; data = mdo->next_extra(data)) {
1862     assert(data < end, "moved past end of extra data");
1863     int tag = data->tag();
1864     switch(tag) {
1865       case DataLayout::bit_data_tag: {
1866         BitData* bit_data = (BitData*) data->data_in();
1867         if (bit_data->bci() == bci) {
1868           return bit_data->exception_seen() ? 1 : 0;
1869         }
1870         break;
1871       }
1872     case DataLayout::no_tag:
1873       // There is a free slot so return false since a BitData would have been allocated to record
1874       // true if it had been seen.
1875       return 0;
1876     case DataLayout::arg_info_data_tag:
1877       // The bci wasn't found and there are no free slots to record a trap for this location, so always
1878       // return unknown.
1879       return -1;
1880     }
1881   }
1882   ShouldNotReachHere();
1883   return -1;
1884 C2V_END
1885 
1886 C2V_VMENTRY_NULL(jobject, getInterfaces, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1887   Klass* klass = UNPACK_PAIR(Klass, klass);
1888   if (klass == nullptr) {
1889     JVMCI_THROW_0(NullPointerException);
1890   }
1891 
1892   if (!klass->is_instance_klass()) {
1893     JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be instance klass", klass->external_name()));
1894   }
1895   InstanceKlass* iklass = InstanceKlass::cast(klass);
1896 
1897   // Regular instance klass, fill in all local interfaces
1898   int size = iklass->local_interfaces()->length();
1899   JVMCIObjectArray interfaces = JVMCIENV->new_HotSpotResolvedObjectTypeImpl_array(size, JVMCI_CHECK_NULL);
1900   for (int index = 0; index < size; index++) {
1901     JVMCIKlassHandle klass(THREAD);
1902     Klass* k = iklass->local_interfaces()->at(index);
1903     klass = k;
1904     JVMCIObject type = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
1905     JVMCIENV->put_object_at(interfaces, index, type);
1906   }
1907   return JVMCIENV->get_jobject(interfaces);
1908 C2V_END
1909 
1910 C2V_VMENTRY_NULL(jobject, getComponentType, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1911   Klass* klass = UNPACK_PAIR(Klass, klass);
1912   if (klass == nullptr) {
1913     JVMCI_THROW_0(NullPointerException);
1914   }
1915 
1916   if (!klass->is_array_klass()) {
1917     return nullptr;
1918   }
1919   oop mirror = klass->java_mirror();
1920   oop component_mirror = java_lang_Class::component_mirror(mirror);
1921   if (component_mirror == nullptr) {
1922     JVMCI_THROW_MSG_0(NullPointerException,
1923                     err_msg("Component mirror for array class %s is null", klass->external_name()))
1924   }
1925 
1926   Klass* component_klass = java_lang_Class::as_Klass(component_mirror);
1927   if (component_klass != nullptr) {
1928     JVMCIKlassHandle klass_handle(THREAD, component_klass);
1929     JVMCIObject result = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL);
1930     return JVMCIENV->get_jobject(result);
1931   }
1932   BasicType type = java_lang_Class::primitive_type(component_mirror);
1933   JVMCIObject result = JVMCIENV->get_jvmci_primitive_type(type);
1934   return JVMCIENV->get_jobject(result);
1935 C2V_END
1936 
1937 C2V_VMENTRY(void, ensureInitialized, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1938   Klass* klass = UNPACK_PAIR(Klass, klass);
1939   if (klass == nullptr) {
1940     JVMCI_THROW(NullPointerException);
1941   }
1942   if (klass->should_be_initialized()) {
1943     InstanceKlass* k = InstanceKlass::cast(klass);
1944     k->initialize(CHECK);
1945   }
1946 C2V_END
1947 
1948 C2V_VMENTRY(void, ensureLinked, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1949   Klass* klass = UNPACK_PAIR(Klass, klass);
1950   if (klass == nullptr) {
1951     JVMCI_THROW(NullPointerException);
1952   }
1953   if (klass->is_instance_klass()) {
1954     InstanceKlass* k = InstanceKlass::cast(klass);
1955     k->link_class(CHECK);
1956   }
1957 C2V_END
1958 
1959 C2V_VMENTRY_0(jint, interpreterFrameSize, (JNIEnv* env, jobject, jobject bytecode_frame_handle))
1960   if (bytecode_frame_handle == nullptr) {
1961     JVMCI_THROW_0(NullPointerException);
1962   }
1963 
1964   JVMCIObject top_bytecode_frame = JVMCIENV->wrap(bytecode_frame_handle);
1965   JVMCIObject bytecode_frame = top_bytecode_frame;
1966   int size = 0;
1967   int callee_parameters = 0;
1968   int callee_locals = 0;
1969   Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame));
1970   int extra_args = method->max_stack() - JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame);
1971 
1972   while (bytecode_frame.is_non_null()) {
1973     int locks = JVMCIENV->get_BytecodeFrame_numLocks(bytecode_frame);
1974     int temps = JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame);
1975     bool is_top_frame = (JVMCIENV->equals(bytecode_frame, top_bytecode_frame));
1976     Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame));
1977 
1978     int frame_size = BytesPerWord * Interpreter::size_activation(method->max_stack(),
1979                                                                  temps + callee_parameters,
1980                                                                  extra_args,
1981                                                                  locks,
1982                                                                  callee_parameters,
1983                                                                  callee_locals,
1984                                                                  is_top_frame);
1985     size += frame_size;
1986 
1987     callee_parameters = method->size_of_parameters();
1988     callee_locals = method->max_locals();
1989     extra_args = 0;
1990     bytecode_frame = JVMCIENV->get_BytecodePosition_caller(bytecode_frame);
1991   }
1992   return size + Deoptimization::last_frame_adjust(0, callee_locals) * BytesPerWord;
1993 C2V_END
1994 
1995 C2V_VMENTRY(void, compileToBytecode, (JNIEnv* env, jobject, jobject lambda_form_handle))
1996   Handle lambda_form = JVMCIENV->asConstant(JVMCIENV->wrap(lambda_form_handle), JVMCI_CHECK);
1997   if (lambda_form->is_a(vmClasses::LambdaForm_klass())) {
1998     TempNewSymbol compileToBytecode = SymbolTable::new_symbol("compileToBytecode");
1999     JavaValue result(T_VOID);
2000     JavaCalls::call_special(&result, lambda_form, vmClasses::LambdaForm_klass(), compileToBytecode, vmSymbols::void_method_signature(), CHECK);
2001   } else {
2002     JVMCI_THROW_MSG(IllegalArgumentException,
2003                     err_msg("Unexpected type: %s", lambda_form->klass()->external_name()))
2004   }
2005 C2V_END
2006 
2007 C2V_VMENTRY_0(jint, getIdentityHashCode, (JNIEnv* env, jobject, jobject object))
2008   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
2009   return obj->identity_hash();
2010 C2V_END
2011 
2012 C2V_VMENTRY_0(jboolean, isInternedString, (JNIEnv* env, jobject, jobject object))
2013   Handle str = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
2014   if (!java_lang_String::is_instance(str())) {
2015     return false;
2016   }
2017   int len;
2018   jchar* name = java_lang_String::as_unicode_string(str(), len, CHECK_false);
2019   return (StringTable::lookup(name, len) != nullptr);
2020 C2V_END
2021 
2022 
2023 C2V_VMENTRY_NULL(jobject, unboxPrimitive, (JNIEnv* env, jobject, jobject object))
2024   if (object == nullptr) {
2025     JVMCI_THROW_0(NullPointerException);
2026   }
2027   Handle box = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2028   BasicType type = java_lang_boxing_object::basic_type(box());
2029   jvalue result;
2030   if (java_lang_boxing_object::get_value(box(), &result) == T_ILLEGAL) {
2031     return nullptr;
2032   }
2033   JVMCIObject boxResult = JVMCIENV->create_box(type, &result, JVMCI_CHECK_NULL);
2034   return JVMCIENV->get_jobject(boxResult);
2035 C2V_END
2036 
2037 C2V_VMENTRY_NULL(jobject, boxPrimitive, (JNIEnv* env, jobject, jobject object))
2038   if (object == nullptr) {
2039     JVMCI_THROW_0(NullPointerException);
2040   }
2041   JVMCIObject box = JVMCIENV->wrap(object);
2042   BasicType type = JVMCIENV->get_box_type(box);
2043   if (type == T_ILLEGAL) {
2044     return nullptr;
2045   }
2046   jvalue value = JVMCIENV->get_boxed_value(type, box);
2047   JavaValue box_result(T_OBJECT);
2048   JavaCallArguments jargs;
2049   Klass* box_klass = nullptr;
2050   Symbol* box_signature = nullptr;
2051 #define BOX_CASE(bt, v, argtype, name)           \
2052   case bt: \
2053     jargs.push_##argtype(value.v); \
2054     box_klass = vmClasses::name##_klass(); \
2055     box_signature = vmSymbols::name##_valueOf_signature(); \
2056     break
2057 
2058   switch (type) {
2059     BOX_CASE(T_BOOLEAN, z, int, Boolean);
2060     BOX_CASE(T_BYTE, b, int, Byte);
2061     BOX_CASE(T_CHAR, c, int, Character);
2062     BOX_CASE(T_SHORT, s, int, Short);
2063     BOX_CASE(T_INT, i, int, Integer);
2064     BOX_CASE(T_LONG, j, long, Long);
2065     BOX_CASE(T_FLOAT, f, float, Float);
2066     BOX_CASE(T_DOUBLE, d, double, Double);
2067     default:
2068       ShouldNotReachHere();
2069   }
2070 #undef BOX_CASE
2071 
2072   JavaCalls::call_static(&box_result,
2073                          box_klass,
2074                          vmSymbols::valueOf_name(),
2075                          box_signature, &jargs, CHECK_NULL);
2076   oop hotspot_box = box_result.get_oop();
2077   JVMCIObject result = JVMCIENV->get_object_constant(hotspot_box, false);
2078   return JVMCIENV->get_jobject(result);
2079 C2V_END
2080 
2081 C2V_VMENTRY_NULL(jobjectArray, getDeclaredConstructors, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2082   Klass* klass = UNPACK_PAIR(Klass, klass);
2083   if (klass == nullptr) {
2084     JVMCI_THROW_0(NullPointerException);
2085   }
2086   if (!klass->is_instance_klass()) {
2087     JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
2088     return JVMCIENV->get_jobjectArray(methods);
2089   }
2090 
2091   InstanceKlass* iklass = InstanceKlass::cast(klass);
2092   GrowableArray<Method*> constructors_array;
2093   for (int i = 0; i < iklass->methods()->length(); i++) {
2094     Method* m = iklass->methods()->at(i);
2095     if (m->is_initializer() && !m->is_static()) {
2096       constructors_array.append(m);
2097     }
2098   }
2099   JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(constructors_array.length(), JVMCI_CHECK_NULL);
2100   for (int i = 0; i < constructors_array.length(); i++) {
2101     methodHandle ctor(THREAD, constructors_array.at(i));
2102     JVMCIObject method = JVMCIENV->get_jvmci_method(ctor, JVMCI_CHECK_NULL);
2103     JVMCIENV->put_object_at(methods, i, method);
2104   }
2105   return JVMCIENV->get_jobjectArray(methods);
2106 C2V_END
2107 
2108 C2V_VMENTRY_NULL(jobjectArray, getDeclaredMethods, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2109   Klass* klass = UNPACK_PAIR(Klass, klass);
2110   if (klass == nullptr) {
2111     JVMCI_THROW_0(NullPointerException);
2112   }
2113   if (!klass->is_instance_klass()) {
2114     JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
2115     return JVMCIENV->get_jobjectArray(methods);
2116   }
2117 
2118   InstanceKlass* iklass = InstanceKlass::cast(klass);
2119   GrowableArray<Method*> methods_array;
2120   for (int i = 0; i < iklass->methods()->length(); i++) {
2121     Method* m = iklass->methods()->at(i);
2122     if (!m->is_initializer() && !m->is_overpass()) {
2123       methods_array.append(m);
2124     }
2125   }
2126   JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(methods_array.length(), JVMCI_CHECK_NULL);
2127   for (int i = 0; i < methods_array.length(); i++) {
2128     methodHandle mh(THREAD, methods_array.at(i));
2129     JVMCIObject method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
2130     JVMCIENV->put_object_at(methods, i, method);
2131   }
2132   return JVMCIENV->get_jobjectArray(methods);
2133 C2V_END
2134 
2135 C2V_VMENTRY_NULL(jobjectArray, getDeclaredFieldsInfo, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2136   Klass* klass = UNPACK_PAIR(Klass, klass);
2137   if (klass == nullptr) {
2138     JVMCI_THROW_0(NullPointerException);
2139   }
2140   if (!klass->is_instance_klass()) {
2141     JVMCI_THROW_MSG_NULL(IllegalArgumentException, "not an InstanceKlass");
2142   }
2143   InstanceKlass* iklass = InstanceKlass::cast(klass);
2144   int java_fields, injected_fields;
2145   GrowableArray<FieldInfo>* fields = FieldInfoStream::create_FieldInfoArray(iklass->fieldinfo_stream(), &java_fields, &injected_fields);
2146   JVMCIObjectArray array = JVMCIENV->new_FieldInfo_array(fields->length(), JVMCIENV);
2147   for (int i = 0; i < fields->length(); i++) {
2148     JVMCIObject field_info = JVMCIENV->new_FieldInfo(fields->adr_at(i), JVMCI_CHECK_NULL);
2149     JVMCIENV->put_object_at(array, i, field_info);
2150   }
2151   return array.as_jobject();
2152 C2V_END
2153 
2154 static jobject read_field_value(Handle obj, long displacement, jchar type_char, bool is_static, Thread* THREAD, JVMCIEnv* JVMCIENV) {
2155 
2156   BasicType basic_type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_NULL);
2157   int basic_type_elemsize = type2aelembytes(basic_type);
2158   if (displacement < 0 || ((size_t) displacement + basic_type_elemsize > HeapWordSize * obj->size())) {
2159     // Reading outside of the object bounds
2160     JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading outside object bounds");
2161   }
2162 
2163   // Perform basic sanity checks on the read.  Primitive reads are permitted to read outside the
2164   // bounds of their fields but object reads must map exactly onto the underlying oop slot.
2165   bool aligned = (displacement % basic_type_elemsize) == 0;
2166   if (!aligned) {
2167     JVMCI_THROW_MSG_NULL(IllegalArgumentException, "read is unaligned");
2168   }
2169   if (basic_type == T_OBJECT) {
2170     if (obj->is_objArray()) {
2171       if (displacement < arrayOopDesc::base_offset_in_bytes(T_OBJECT)) {
2172         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header");
2173       }
2174       if (displacement + heapOopSize > arrayOopDesc::base_offset_in_bytes(T_OBJECT) + arrayOop(obj())->length() * heapOopSize) {
2175         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading after last array element");
2176       }
2177       if (((displacement - arrayOopDesc::base_offset_in_bytes(T_OBJECT)) % heapOopSize) != 0) {
2178         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "misaligned object read from array");
2179       }
2180     } else if (obj->is_instance()) {
2181       InstanceKlass* klass = InstanceKlass::cast(is_static ? java_lang_Class::as_Klass(obj()) : obj->klass());
2182       fieldDescriptor fd;
2183       if (!klass->find_field_from_offset(displacement, is_static, &fd)) {
2184         JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Can't find field at displacement %d in object of type %s", (int) displacement, klass->external_name()));
2185       }
2186       if (fd.field_type() != T_OBJECT && fd.field_type() != T_ARRAY) {
2187         JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Field at displacement %d in object of type %s is %s but expected %s", (int) displacement,
2188                                                                klass->external_name(), type2name(fd.field_type()), type2name(basic_type)));
2189       }
2190     } else if (obj->is_typeArray()) {
2191       JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Can't read objects from primitive array");
2192     } else {
2193       ShouldNotReachHere();
2194     }
2195   } else {
2196     if (obj->is_objArray()) {
2197       JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Reading primitive from object array");
2198     } else if (obj->is_typeArray()) {
2199       if (displacement < arrayOopDesc::base_offset_in_bytes(ArrayKlass::cast(obj->klass())->element_type())) {
2200         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header");
2201       }
2202     }
2203   }
2204 
2205   jlong value = 0;
2206 
2207   // Treat all reads as volatile for simplicity as this function can be used
2208   // both for reading Java fields declared as volatile as well as for constant
2209   // folding Unsafe.get* methods with volatile semantics.
2210 
2211   switch (basic_type) {
2212     case T_BOOLEAN: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jboolean>(displacement)); break;
2213     case T_BYTE:    value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jbyte>(displacement));    break;
2214     case T_SHORT:   value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jshort>(displacement));   break;
2215     case T_CHAR:    value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jchar>(displacement));    break;
2216     case T_FLOAT:
2217     case T_INT:     value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jint>(displacement));     break;
2218     case T_DOUBLE:
2219     case T_LONG:    value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jlong>(displacement));    break;
2220 
2221     case T_OBJECT: {
2222       if (displacement == java_lang_Class::component_mirror_offset() && java_lang_Class::is_instance(obj()) &&
2223           (java_lang_Class::as_Klass(obj()) == nullptr || !java_lang_Class::as_Klass(obj())->is_array_klass())) {
2224         // Class.componentType for non-array classes can transiently contain an int[] that's
2225         // used for locking so always return null to mimic Class.getComponentType()
2226         return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
2227       }
2228 
2229       // Perform the read including any barriers required to make the reference strongly reachable
2230       // since it will be wrapped as a JavaConstant.
2231       oop value = obj->obj_field_access<MO_SEQ_CST | ON_UNKNOWN_OOP_REF>(displacement);
2232 
2233       if (value == nullptr) {
2234         return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
2235       } else {
2236         if (value != nullptr && !oopDesc::is_oop(value)) {
2237           // Throw an exception to improve debuggability.  This check isn't totally reliable because
2238           // is_oop doesn't try to be completety safe but for most invalid values it provides a good
2239           // enough answer.  It possible to crash in the is_oop call but that just means the crash happens
2240           // closer to where things went wrong.
2241           JVMCI_THROW_MSG_NULL(InternalError, err_msg("Read bad oop " INTPTR_FORMAT " at offset " JLONG_FORMAT " in object " INTPTR_FORMAT " of type %s",
2242                                                       p2i(value), displacement, p2i(obj()), obj->klass()->external_name()));
2243         }
2244 
2245         JVMCIObject result = JVMCIENV->get_object_constant(value);
2246         return JVMCIENV->get_jobject(result);
2247       }
2248     }
2249 
2250     default:
2251       ShouldNotReachHere();
2252   }
2253   JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, value, JVMCI_CHECK_NULL);
2254   return JVMCIENV->get_jobject(result);
2255 }
2256 
2257 C2V_VMENTRY_NULL(jobject, readStaticFieldValue, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), long displacement, jchar type_char))
2258   Klass* klass = UNPACK_PAIR(Klass, klass);
2259   Handle obj(THREAD, klass->java_mirror());
2260   return read_field_value(obj, displacement, type_char, true, THREAD, JVMCIENV);
2261 C2V_END
2262 
2263 C2V_VMENTRY_NULL(jobject, readFieldValue, (JNIEnv* env, jobject, jobject object, ARGUMENT_PAIR(expected_type), long displacement, jchar type_char))
2264   if (object == nullptr) {
2265     JVMCI_THROW_0(NullPointerException);
2266   }
2267 
2268   // asConstant will throw an NPE if a constant contains null
2269   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2270 
2271   Klass* expected_klass = UNPACK_PAIR(Klass, expected_type);
2272   if (expected_klass != nullptr) {
2273     InstanceKlass* expected_iklass = InstanceKlass::cast(expected_klass);
2274     if (!obj->is_a(expected_iklass)) {
2275       // Not of the expected type
2276       return nullptr;
2277     }
2278   }
2279   bool is_static = expected_klass == nullptr && java_lang_Class::is_instance(obj()) && displacement >= InstanceMirrorKlass::offset_of_static_fields();
2280   return read_field_value(obj, displacement, type_char, is_static, THREAD, JVMCIENV);
2281 C2V_END
2282 
2283 C2V_VMENTRY_0(jboolean, isInstance, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jobject object))
2284   Klass* klass = UNPACK_PAIR(Klass, klass);
2285   if (object == nullptr || klass == nullptr) {
2286     JVMCI_THROW_0(NullPointerException);
2287   }
2288   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
2289   return obj->is_a(klass);
2290 C2V_END
2291 
2292 C2V_VMENTRY_0(jboolean, isAssignableFrom, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(subklass)))
2293   Klass* klass = UNPACK_PAIR(Klass, klass);
2294   Klass* subklass = UNPACK_PAIR(Klass, subklass);
2295   if (klass == nullptr || subklass == nullptr) {
2296     JVMCI_THROW_0(NullPointerException);
2297   }
2298   return subklass->is_subtype_of(klass);
2299 C2V_END
2300 
2301 C2V_VMENTRY_0(jboolean, isTrustedForIntrinsics, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2302   Klass* klass = UNPACK_PAIR(Klass, klass);
2303   if (klass == nullptr) {
2304     JVMCI_THROW_0(NullPointerException);
2305   }
2306   InstanceKlass* ik = InstanceKlass::cast(klass);
2307   if (ik->class_loader_data()->is_boot_class_loader_data() || ik->class_loader_data()->is_platform_class_loader_data()) {
2308     return true;
2309   }
2310   return false;
2311 C2V_END
2312 
2313 C2V_VMENTRY_NULL(jobject, asJavaType, (JNIEnv* env, jobject, jobject object))
2314   if (object == nullptr) {
2315     JVMCI_THROW_0(NullPointerException);
2316   }
2317   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2318   if (java_lang_Class::is_instance(obj())) {
2319     if (java_lang_Class::is_primitive(obj())) {
2320       JVMCIObject type = JVMCIENV->get_jvmci_primitive_type(java_lang_Class::primitive_type(obj()));
2321       return JVMCIENV->get_jobject(type);
2322     }
2323     Klass* klass = java_lang_Class::as_Klass(obj());
2324     JVMCIKlassHandle klass_handle(THREAD);
2325     klass_handle = klass;
2326     JVMCIObject type = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL);
2327     return JVMCIENV->get_jobject(type);
2328   }
2329   return nullptr;
2330 C2V_END
2331 
2332 
2333 C2V_VMENTRY_NULL(jobject, asString, (JNIEnv* env, jobject, jobject object))
2334   if (object == nullptr) {
2335     JVMCI_THROW_0(NullPointerException);
2336   }
2337   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2338   const char* str = java_lang_String::as_utf8_string(obj());
2339   JVMCIObject result = JVMCIENV->create_string(str, JVMCI_CHECK_NULL);
2340   return JVMCIENV->get_jobject(result);
2341 C2V_END
2342 
2343 
2344 C2V_VMENTRY_0(jboolean, equals, (JNIEnv* env, jobject, jobject x, jlong xHandle, jobject y, jlong yHandle))
2345   if (x == nullptr || y == nullptr) {
2346     JVMCI_THROW_0(NullPointerException);
2347   }
2348   return JVMCIENV->resolve_oop_handle(xHandle) == JVMCIENV->resolve_oop_handle(yHandle);
2349 C2V_END
2350 
2351 C2V_VMENTRY_NULL(jobject, getJavaMirror, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2352   Klass* klass = UNPACK_PAIR(Klass, klass);
2353   if (klass == nullptr) {
2354     JVMCI_THROW_0(NullPointerException);
2355   }
2356   Handle mirror(THREAD, klass->java_mirror());
2357   JVMCIObject result = JVMCIENV->get_object_constant(mirror());
2358   return JVMCIENV->get_jobject(result);
2359 C2V_END
2360 
2361 
2362 C2V_VMENTRY_0(jint, getArrayLength, (JNIEnv* env, jobject, jobject x))
2363   if (x == nullptr) {
2364     JVMCI_THROW_0(NullPointerException);
2365   }
2366   Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_0);
2367   if (xobj->klass()->is_array_klass()) {
2368     return arrayOop(xobj())->length();
2369   }
2370   return -1;
2371  C2V_END
2372 
2373 
2374 C2V_VMENTRY_NULL(jobject, readArrayElement, (JNIEnv* env, jobject, jobject x, int index))
2375   if (x == nullptr) {
2376     JVMCI_THROW_0(NullPointerException);
2377   }
2378   Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_NULL);
2379   if (xobj->klass()->is_array_klass()) {
2380     arrayOop array = arrayOop(xobj());
2381     BasicType element_type = ArrayKlass::cast(array->klass())->element_type();
2382     if (index < 0 || index >= array->length()) {
2383       return nullptr;
2384     }
2385     JVMCIObject result;
2386 
2387     if (element_type == T_OBJECT) {
2388       result = JVMCIENV->get_object_constant(objArrayOop(xobj())->obj_at(index));
2389       if (result.is_null()) {
2390         result = JVMCIENV->get_JavaConstant_NULL_POINTER();
2391       }
2392     } else {
2393       jvalue value;
2394       switch (element_type) {
2395         case T_DOUBLE:        value.d = typeArrayOop(xobj())->double_at(index);        break;
2396         case T_FLOAT:         value.f = typeArrayOop(xobj())->float_at(index);         break;
2397         case T_LONG:          value.j = typeArrayOop(xobj())->long_at(index);          break;
2398         case T_INT:           value.i = typeArrayOop(xobj())->int_at(index);            break;
2399         case T_SHORT:         value.s = typeArrayOop(xobj())->short_at(index);          break;
2400         case T_CHAR:          value.c = typeArrayOop(xobj())->char_at(index);           break;
2401         case T_BYTE:          value.b = typeArrayOop(xobj())->byte_at(index);           break;
2402         case T_BOOLEAN:       value.z = typeArrayOop(xobj())->byte_at(index) & 1;       break;
2403         default:              ShouldNotReachHere();
2404       }
2405       result = JVMCIENV->create_box(element_type, &value, JVMCI_CHECK_NULL);
2406     }
2407     assert(!result.is_null(), "must have a value");
2408     return JVMCIENV->get_jobject(result);
2409   }
2410   return nullptr;;
2411 C2V_END
2412 
2413 
2414 C2V_VMENTRY_0(jint, arrayBaseOffset, (JNIEnv* env, jobject, jchar type_char))
2415   BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
2416   return arrayOopDesc::base_offset_in_bytes(type);
2417 C2V_END
2418 
2419 C2V_VMENTRY_0(jint, arrayIndexScale, (JNIEnv* env, jobject, jchar type_char))
2420   BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
2421   return type2aelembytes(type);
2422 C2V_END
2423 
2424 C2V_VMENTRY(void, releaseClearedOopHandles, (JNIEnv* env, jobject))
2425   JVMCIENV->runtime()->release_cleared_oop_handles();
2426 C2V_END
2427 
2428 static void requireJVMCINativeLibrary(JVMCI_TRAPS) {
2429   if (!UseJVMCINativeLibrary) {
2430     JVMCI_THROW_MSG(UnsupportedOperationException, "JVMCI shared library is not enabled (requires -XX:+UseJVMCINativeLibrary)");
2431   }
2432 }
2433 
2434 C2V_VMENTRY_NULL(jlongArray, registerNativeMethods, (JNIEnv* env, jobject, jclass mirror))
2435   requireJVMCINativeLibrary(JVMCI_CHECK_NULL);
2436   requireInHotSpot("registerNativeMethods", JVMCI_CHECK_NULL);
2437   char* sl_path;
2438   void* sl_handle;
2439   JVMCIRuntime* runtime;
2440   {
2441     // Ensure the JVMCI shared library runtime is initialized.
2442     bool jni_enomem_is_fatal = false;
2443     JVMCIEnv __peer_jvmci_env__(thread, false, jni_enomem_is_fatal, __FILE__, __LINE__);
2444     JVMCIEnv* peerEnv = &__peer_jvmci_env__;
2445     if (peerEnv->has_jni_enomem()) {
2446       JVMCI_THROW_MSG_0(OutOfMemoryError, "JNI_ENOMEM creating or attaching to libjvmci");
2447     }
2448     HandleMark hm(THREAD);
2449     runtime = JVMCI::compiler_runtime(thread);
2450     if (peerEnv->has_pending_exception()) {
2451       peerEnv->describe_pending_exception(tty);
2452     }
2453     sl_handle = JVMCI::get_shared_library(sl_path, false);
2454     if (sl_handle == nullptr) {
2455       JVMCI_THROW_MSG_0(InternalError, err_msg("Error initializing JVMCI runtime %d", runtime->id()));
2456     }
2457   }
2458 
2459   if (mirror == nullptr) {
2460     JVMCI_THROW_0(NullPointerException);
2461   }
2462   Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2463   if (klass == nullptr || !klass->is_instance_klass()) {
2464     JVMCI_THROW_MSG_0(IllegalArgumentException, "clazz is for primitive type");
2465   }
2466 
2467   InstanceKlass* iklass = InstanceKlass::cast(klass);
2468   for (int i = 0; i < iklass->methods()->length(); i++) {
2469     methodHandle method(THREAD, iklass->methods()->at(i));
2470     if (method->is_native()) {
2471 
2472       // Compute argument size
2473       int args_size = 1                             // JNIEnv
2474                     + (method->is_static() ? 1 : 0) // class for static methods
2475                     + method->size_of_parameters(); // actual parameters
2476 
2477       // 1) Try JNI short style
2478       stringStream st;
2479       char* pure_name = NativeLookup::pure_jni_name(method);
2480       guarantee(pure_name != nullptr, "Illegal native method name encountered");
2481       os::print_jni_name_prefix_on(&st, args_size);
2482       st.print_raw(pure_name);
2483       os::print_jni_name_suffix_on(&st, args_size);
2484       char* jni_name = st.as_string();
2485 
2486       address entry = (address) os::dll_lookup(sl_handle, jni_name);
2487       if (entry == nullptr) {
2488         // 2) Try JNI long style
2489         st.reset();
2490         char* long_name = NativeLookup::long_jni_name(method);
2491         guarantee(long_name != nullptr, "Illegal native method name encountered");
2492         os::print_jni_name_prefix_on(&st, args_size);
2493         st.print_raw(pure_name);
2494         st.print_raw(long_name);
2495         os::print_jni_name_suffix_on(&st, args_size);
2496         char* jni_long_name = st.as_string();
2497         entry = (address) os::dll_lookup(sl_handle, jni_long_name);
2498         if (entry == nullptr) {
2499           JVMCI_THROW_MSG_0(UnsatisfiedLinkError, err_msg("%s [neither %s nor %s exist in %s]",
2500               method->name_and_sig_as_C_string(),
2501               jni_name, jni_long_name, sl_path));
2502         }
2503       }
2504 
2505       if (method->has_native_function() && entry != method->native_function()) {
2506         JVMCI_THROW_MSG_0(UnsatisfiedLinkError, err_msg("%s [cannot re-link from " PTR_FORMAT " to " PTR_FORMAT "]",
2507             method->name_and_sig_as_C_string(), p2i(method->native_function()), p2i(entry)));
2508       }
2509       method->set_native_function(entry, Method::native_bind_event_is_interesting);
2510       log_debug(jni, resolve)("[Dynamic-linking native method %s.%s ... JNI] @ " PTR_FORMAT,
2511                               method->method_holder()->external_name(),
2512                               method->name()->as_C_string(),
2513                               p2i((void*) entry));
2514     }
2515   }
2516 
2517   typeArrayOop info_oop = oopFactory::new_longArray(4, CHECK_0);
2518   jlongArray info = (jlongArray) JNIHandles::make_local(THREAD, info_oop);
2519   runtime->init_JavaVM_info(info, JVMCI_CHECK_0);
2520   return info;
2521 }
2522 
2523 C2V_VMENTRY_PREFIX(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject c2vm))
2524   if (thread == nullptr || thread->libjvmci_runtime() == nullptr) {
2525     // Called from unattached JVMCI shared library thread
2526     return false;
2527   }
2528   if (thread->jni_environment() == env) {
2529     C2V_BLOCK(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject))
2530     JVMCITraceMark jtm("isCurrentThreadAttached");
2531     requireJVMCINativeLibrary(JVMCI_CHECK_0);
2532     JVMCIRuntime* runtime = thread->libjvmci_runtime();
2533     if (runtime == nullptr || !runtime->has_shared_library_javavm()) {
2534       JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in isCurrentThreadAttached");
2535     }
2536     JNIEnv* peerEnv;
2537     return runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) == JNI_OK;
2538   }
2539   return true;
2540 C2V_END
2541 
2542 C2V_VMENTRY_PREFIX(jlong, getCurrentJavaThread, (JNIEnv* env, jobject c2vm))
2543   if (thread == nullptr) {
2544     // Called from unattached JVMCI shared library thread
2545     return 0L;
2546   }
2547   return (jlong) p2i(thread);
2548 C2V_END
2549 
2550 // Attaches a thread started in a JVMCI shared library to a JavaThread and JVMCI runtime.
2551 static void attachSharedLibraryThread(JNIEnv* env, jbyteArray name, jboolean as_daemon) {
2552   JavaVM* javaVM = nullptr;
2553   jint res = env->GetJavaVM(&javaVM);
2554   if (res != JNI_OK) {
2555     JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Error getting shared library JavaVM from shared library JNIEnv: %d", res));
2556   }
2557   extern struct JavaVM_ main_vm;
2558   JNIEnv* hotspotEnv;
2559 
2560   int name_len = env->GetArrayLength(name);
2561   char name_buf[64]; // Cannot use Resource heap as it requires a current thread
2562   int to_copy = MIN2(name_len, (int) sizeof(name_buf) - 1);
2563   env->GetByteArrayRegion(name, 0, to_copy, (jbyte*) name_buf);
2564   name_buf[to_copy] = '\0';
2565   JavaVMAttachArgs attach_args;
2566   attach_args.version = JNI_VERSION_1_2;
2567   attach_args.name = name_buf;
2568   attach_args.group = nullptr;
2569   res = as_daemon ? main_vm.AttachCurrentThreadAsDaemon((void**)&hotspotEnv, &attach_args) :
2570                     main_vm.AttachCurrentThread((void**)&hotspotEnv, &attach_args);
2571   if (res != JNI_OK) {
2572     JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Trying to attach thread returned %d", res));
2573   }
2574   JavaThread* thread = get_current_thread(false);
2575   const char* attach_error;
2576   {
2577     // Transition to VM
2578     JVMCI_VM_ENTRY_MARK
2579     attach_error = JVMCIRuntime::attach_shared_library_thread(thread, javaVM);
2580     // Transition back to Native
2581   }
2582   if (attach_error != nullptr) {
2583     JNI_THROW("attachCurrentThread", InternalError, attach_error);
2584   }
2585 }
2586 
2587 C2V_VMENTRY_PREFIX(jboolean, attachCurrentThread, (JNIEnv* env, jobject c2vm, jbyteArray name, jboolean as_daemon, jlongArray javaVM_info))
2588   if (thread == nullptr) {
2589     attachSharedLibraryThread(env, name, as_daemon);
2590     return true;
2591   }
2592   if (thread->jni_environment() == env) {
2593     // Called from HotSpot
2594     C2V_BLOCK(jboolean, attachCurrentThread, (JNIEnv* env, jobject, jboolean))
2595     JVMCITraceMark jtm("attachCurrentThread");
2596     requireJVMCINativeLibrary(JVMCI_CHECK_0);
2597 
2598     JVMCIRuntime* runtime = JVMCI::compiler_runtime(thread);
2599     JNIEnv* peerJNIEnv;
2600     if (runtime->has_shared_library_javavm()) {
2601       if (runtime->GetEnv(thread, (void**)&peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) {
2602         // Already attached
2603         runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0);
2604         return false;
2605       }
2606     }
2607 
2608     {
2609       // Ensure the JVMCI shared library runtime is initialized.
2610       bool jni_enomem_is_fatal = false;
2611       JVMCIEnv __peer_jvmci_env__(thread, false, jni_enomem_is_fatal, __FILE__, __LINE__);
2612       JVMCIEnv* peerJVMCIEnv = &__peer_jvmci_env__;
2613       if (peerJVMCIEnv->has_jni_enomem()) {
2614         JVMCI_THROW_MSG_0(OutOfMemoryError, "JNI_ENOMEM creating or attaching to libjvmci");
2615       }
2616 
2617       HandleMark hm(thread);
2618       JVMCIObject receiver = runtime->get_HotSpotJVMCIRuntime(peerJVMCIEnv);
2619       if (peerJVMCIEnv->has_pending_exception()) {
2620         peerJVMCIEnv->describe_pending_exception(tty);
2621       }
2622       char* sl_path;
2623       if (JVMCI::get_shared_library(sl_path, false) == nullptr) {
2624         JVMCI_THROW_MSG_0(InternalError, "Error initializing JVMCI runtime");
2625       }
2626     }
2627 
2628     JavaVMAttachArgs attach_args;
2629     attach_args.version = JNI_VERSION_1_2;
2630     attach_args.name = const_cast<char*>(thread->name());
2631     attach_args.group = nullptr;
2632     if (runtime->GetEnv(thread, (void**) &peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) {
2633       return false;
2634     }
2635     jint res = as_daemon ? runtime->AttachCurrentThreadAsDaemon(thread, (void**) &peerJNIEnv, &attach_args) :
2636                            runtime->AttachCurrentThread(thread, (void**) &peerJNIEnv, &attach_args);
2637 
2638     if (res == JNI_OK) {
2639       guarantee(peerJNIEnv != nullptr, "must be");
2640       runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0);
2641       JVMCI_event_1("attached to JavaVM[%d] for JVMCI runtime %d", runtime->get_shared_library_javavm_id(), runtime->id());
2642       return true;
2643     }
2644     JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, attach_args.name));
2645   }
2646   // Called from JVMCI shared library
2647   return false;
2648 C2V_END
2649 
2650 C2V_VMENTRY_PREFIX(jboolean, detachCurrentThread, (JNIEnv* env, jobject c2vm, jboolean release))
2651   if (thread == nullptr) {
2652     // Called from unattached JVMCI shared library thread
2653     JNI_THROW_("detachCurrentThread", IllegalStateException, "Cannot detach non-attached thread", false);
2654   }
2655   if (thread->jni_environment() == env) {
2656     // Called from HotSpot
2657     C2V_BLOCK(void, detachCurrentThread, (JNIEnv* env, jobject))
2658     JVMCITraceMark jtm("detachCurrentThread");
2659     requireJVMCINativeLibrary(JVMCI_CHECK_0);
2660     requireInHotSpot("detachCurrentThread", JVMCI_CHECK_0);
2661     JVMCIRuntime* runtime = thread->libjvmci_runtime();
2662     if (runtime == nullptr || !runtime->has_shared_library_javavm()) {
2663       JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in detachCurrentThread");
2664     }
2665     JNIEnv* peerEnv;
2666 
2667     if (runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) != JNI_OK) {
2668       JVMCI_THROW_MSG_0(IllegalStateException, err_msg("Cannot detach non-attached thread: %s", thread->name()));
2669     }
2670     jint res = runtime->DetachCurrentThread(thread);
2671     if (res != JNI_OK) {
2672       JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, thread->name()));
2673     }
2674     JVMCI_event_1("detached from JavaVM[%d] for JVMCI runtime %d",
2675         runtime->get_shared_library_javavm_id(), runtime->id());
2676     if (release) {
2677       return runtime->detach_thread(thread, "user thread detach");
2678     }
2679   } else {
2680     // Called from attached JVMCI shared library thread
2681     if (release) {
2682       JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread cannot release JVMCI shared library JavaVM", false);
2683     }
2684     JVMCIRuntime* runtime = thread->libjvmci_runtime();
2685     if (runtime == nullptr) {
2686       JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread should have a JVMCI runtime", false);
2687     }
2688     {
2689       // Transition to VM
2690       C2V_BLOCK(jboolean, detachCurrentThread, (JNIEnv* env, jobject))
2691       // Cannot destroy shared library JavaVM as we're about to return to it.
2692       runtime->detach_thread(thread, "shared library thread detach", false);
2693       JVMCI_event_1("detaching JVMCI shared library thread from HotSpot JavaVM");
2694       // Transition back to Native
2695     }
2696     extern struct JavaVM_ main_vm;
2697     jint res = main_vm.DetachCurrentThread();
2698     if (res != JNI_OK) {
2699       JNI_THROW_("detachCurrentThread", InternalError, "Cannot detach non-attached thread", false);
2700     }
2701   }
2702   return false;
2703 C2V_END
2704 
2705 C2V_VMENTRY_0(jlong, translate, (JNIEnv* env, jobject, jobject obj_handle, jboolean callPostTranslation))
2706   requireJVMCINativeLibrary(JVMCI_CHECK_0);
2707   if (obj_handle == nullptr) {
2708     return 0L;
2709   }
2710   bool jni_enomem_is_fatal = false;
2711   JVMCIEnv __peer_jvmci_env__(thread, !JVMCIENV->is_hotspot(), jni_enomem_is_fatal, __FILE__, __LINE__);
2712   JVMCIEnv* peerEnv = &__peer_jvmci_env__;
2713   JVMCIEnv* thisEnv = JVMCIENV;
2714   if (peerEnv->has_jni_enomem()) {
2715       JVMCI_THROW_MSG_0(OutOfMemoryError, "JNI_ENOMEM creating or attaching to libjvmci");
2716   }
2717 
2718   JVMCIObject obj = thisEnv->wrap(obj_handle);
2719   JVMCIObject result;
2720   if (thisEnv->isa_HotSpotResolvedJavaMethodImpl(obj)) {
2721     methodHandle method(THREAD, thisEnv->asMethod(obj));
2722     result = peerEnv->get_jvmci_method(method, JVMCI_CHECK_0);
2723   } else if (thisEnv->isa_HotSpotResolvedObjectTypeImpl(obj)) {
2724     Klass* klass = thisEnv->asKlass(obj);
2725     JVMCIKlassHandle klass_handle(THREAD);
2726     klass_handle = klass;
2727     result = peerEnv->get_jvmci_type(klass_handle, JVMCI_CHECK_0);
2728   } else if (thisEnv->isa_HotSpotResolvedPrimitiveType(obj)) {
2729     BasicType type = JVMCIENV->kindToBasicType(JVMCIENV->get_HotSpotResolvedPrimitiveType_kind(obj), JVMCI_CHECK_0);
2730     result = peerEnv->get_jvmci_primitive_type(type);
2731   } else if (thisEnv->isa_IndirectHotSpotObjectConstantImpl(obj) ||
2732              thisEnv->isa_DirectHotSpotObjectConstantImpl(obj)) {
2733     Handle constant = thisEnv->asConstant(obj, JVMCI_CHECK_0);
2734     result = peerEnv->get_object_constant(constant());
2735   } else if (thisEnv->isa_HotSpotNmethod(obj)) {
2736     if (peerEnv->is_hotspot()) {
2737       nmethod* nm = JVMCIENV->get_nmethod(obj);
2738       if (nm != nullptr) {
2739         JVMCINMethodData* data = nm->jvmci_nmethod_data();
2740         if (data != nullptr) {
2741           // Only the mirror in the HotSpot heap is accessible
2742           // through JVMCINMethodData
2743           oop nmethod_mirror = data->get_nmethod_mirror(nm, /* phantom_ref */ true);
2744           if (nmethod_mirror != nullptr) {
2745             result = HotSpotJVMCI::wrap(nmethod_mirror);
2746           }
2747         }
2748       }
2749     }
2750 
2751     if (result.is_null()) {
2752       JVMCIObject methodObject = thisEnv->get_HotSpotNmethod_method(obj);
2753       methodHandle mh(THREAD, thisEnv->asMethod(methodObject));
2754       jboolean isDefault = thisEnv->get_HotSpotNmethod_isDefault(obj);
2755       jlong compileIdSnapshot = thisEnv->get_HotSpotNmethod_compileIdSnapshot(obj);
2756       JVMCIObject name_string = thisEnv->get_InstalledCode_name(obj);
2757       const char* cstring = name_string.is_null() ? nullptr : thisEnv->as_utf8_string(name_string);
2758       // Create a new HotSpotNmethod instance in the peer runtime
2759       result = peerEnv->new_HotSpotNmethod(mh, cstring, isDefault, compileIdSnapshot, JVMCI_CHECK_0);
2760       nmethod* nm = JVMCIENV->get_nmethod(obj);
2761       if (result.is_null()) {
2762         // exception occurred (e.g. OOME) creating a new HotSpotNmethod
2763       } else if (nm == nullptr) {
2764         // nmethod must have been unloaded
2765       } else {
2766         // Link the new HotSpotNmethod to the nmethod
2767         peerEnv->initialize_installed_code(result, nm, JVMCI_CHECK_0);
2768         // Only HotSpotNmethod instances in the HotSpot heap are tracked directly by the runtime.
2769         if (peerEnv->is_hotspot()) {
2770           JVMCINMethodData* data = nm->jvmci_nmethod_data();
2771           if (data == nullptr) {
2772             JVMCI_THROW_MSG_0(IllegalArgumentException, "Cannot set HotSpotNmethod mirror for default nmethod");
2773           }
2774           if (data->get_nmethod_mirror(nm, /* phantom_ref */ false) != nullptr) {
2775             JVMCI_THROW_MSG_0(IllegalArgumentException, "Cannot overwrite existing HotSpotNmethod mirror for nmethod");
2776           }
2777           oop nmethod_mirror = HotSpotJVMCI::resolve(result);
2778           data->set_nmethod_mirror(nm, nmethod_mirror);
2779         }
2780       }
2781     }
2782   } else {
2783     JVMCI_THROW_MSG_0(IllegalArgumentException,
2784                 err_msg("Cannot translate object of type: %s", thisEnv->klass_name(obj)));
2785   }
2786   if (callPostTranslation) {
2787     peerEnv->call_HotSpotJVMCIRuntime_postTranslation(result, JVMCI_CHECK_0);
2788   }
2789   // Propagate any exception that occurred while creating the translated object
2790   if (peerEnv->transfer_pending_exception(thread, thisEnv)) {
2791     return 0L;
2792   }
2793   return (jlong) peerEnv->make_global(result).as_jobject();
2794 }
2795 
2796 C2V_VMENTRY_NULL(jobject, unhand, (JNIEnv* env, jobject, jlong obj_handle))
2797   requireJVMCINativeLibrary(JVMCI_CHECK_NULL);
2798   if (obj_handle == 0L) {
2799     return nullptr;
2800   }
2801   jobject global_handle = (jobject) obj_handle;
2802   JVMCIObject global_handle_obj = JVMCIENV->wrap(global_handle);
2803   jobject result = JVMCIENV->make_local(global_handle_obj).as_jobject();
2804 
2805   JVMCIENV->destroy_global(global_handle_obj);
2806   return result;
2807 }
2808 
2809 C2V_VMENTRY(void, updateHotSpotNmethod, (JNIEnv* env, jobject, jobject code_handle))
2810   JVMCIObject code = JVMCIENV->wrap(code_handle);
2811   // Execute this operation for the side effect of updating the InstalledCode state
2812   JVMCIENV->get_nmethod(code);
2813 }
2814 
2815 C2V_VMENTRY_NULL(jbyteArray, getCode, (JNIEnv* env, jobject, jobject code_handle))
2816   JVMCIObject code = JVMCIENV->wrap(code_handle);
2817   CodeBlob* cb = JVMCIENV->get_code_blob(code);
2818   if (cb == nullptr) {
2819     return nullptr;
2820   }
2821   // Make a resource copy of code before the allocation causes a safepoint
2822   int code_size = cb->code_size();
2823   jbyte* code_bytes = NEW_RESOURCE_ARRAY(jbyte, code_size);
2824   memcpy(code_bytes, (jbyte*) cb->code_begin(), code_size);
2825 
2826   JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL);
2827   JVMCIENV->copy_bytes_from(code_bytes, result, 0, code_size);
2828   return JVMCIENV->get_jbyteArray(result);
2829 }
2830 
2831 C2V_VMENTRY_NULL(jobject, asReflectionExecutable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
2832   requireInHotSpot("asReflectionExecutable", JVMCI_CHECK_NULL);
2833   methodHandle m(THREAD, UNPACK_PAIR(Method, method));
2834   oop executable;
2835   if (m->is_initializer()) {
2836     if (m->is_static_initializer()) {
2837       JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2838           "Cannot create java.lang.reflect.Method for class initializer");
2839     }
2840     executable = Reflection::new_constructor(m, CHECK_NULL);
2841   } else {
2842     executable = Reflection::new_method(m, false, CHECK_NULL);
2843   }
2844   return JNIHandles::make_local(THREAD, executable);
2845 }
2846 
2847 static InstanceKlass* check_field(Klass* klass, jint index, JVMCI_TRAPS) {
2848   if (!klass->is_instance_klass()) {
2849     JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2850         err_msg("Expected non-primitive type, got %s", klass->external_name()));
2851   }
2852   InstanceKlass* iklass = InstanceKlass::cast(klass);
2853   if (index < 0 || index > iklass->total_fields_count()) {
2854     JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2855         err_msg("Field index %d out of bounds for %s", index, klass->external_name()));
2856   }
2857   return iklass;
2858 }
2859 
2860 C2V_VMENTRY_NULL(jobject, asReflectionField, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jint index))
2861   requireInHotSpot("asReflectionField", JVMCI_CHECK_NULL);
2862   Klass* klass = UNPACK_PAIR(Klass, klass);
2863   InstanceKlass* iklass = check_field(klass, index, JVMCIENV);
2864   fieldDescriptor fd(iklass, index);
2865   oop reflected = Reflection::new_field(&fd, CHECK_NULL);
2866   return JNIHandles::make_local(THREAD, reflected);
2867 }
2868 
2869 static jbyteArray get_encoded_annotation_data(InstanceKlass* holder, AnnotationArray* annotations_array, bool for_class,
2870                                               jint filter_length, jlong filter_klass_pointers,
2871                                               JavaThread* THREAD, JVMCIEnv* JVMCIENV) {
2872   // Get a ConstantPool object for annotation parsing
2873   Handle jcp = reflect_ConstantPool::create(CHECK_NULL);
2874   reflect_ConstantPool::set_cp(jcp(), holder->constants());
2875 
2876   // load VMSupport
2877   Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport();
2878   Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK_NULL);
2879 
2880   InstanceKlass* vm_support = InstanceKlass::cast(k);
2881   if (vm_support->should_be_initialized()) {
2882     vm_support->initialize(CHECK_NULL);
2883   }
2884 
2885   typeArrayOop annotations_oop = Annotations::make_java_array(annotations_array, CHECK_NULL);
2886   typeArrayHandle annotations = typeArrayHandle(THREAD, annotations_oop);
2887 
2888   InstanceKlass** filter = filter_length == 1 ?
2889       (InstanceKlass**) &filter_klass_pointers:
2890       (InstanceKlass**) filter_klass_pointers;
2891   objArrayOop filter_oop = oopFactory::new_objArray(vmClasses::Class_klass(), filter_length, CHECK_NULL);
2892   objArrayHandle filter_classes(THREAD, filter_oop);
2893   for (int i = 0; i < filter_length; i++) {
2894     filter_classes->obj_at_put(i, filter[i]->java_mirror());
2895   }
2896 
2897   // invoke VMSupport.encodeAnnotations
2898   JavaValue result(T_OBJECT);
2899   JavaCallArguments args;
2900   args.push_oop(annotations);
2901   args.push_oop(Handle(THREAD, holder->java_mirror()));
2902   args.push_oop(jcp);
2903   args.push_int(for_class);
2904   args.push_oop(filter_classes);
2905   Symbol* signature = vmSymbols::encodeAnnotations_signature();
2906   JavaCalls::call_static(&result,
2907                          vm_support,
2908                          vmSymbols::encodeAnnotations_name(),
2909                          signature,
2910                          &args,
2911                          CHECK_NULL);
2912 
2913   oop res = result.get_oop();
2914   if (JVMCIENV->is_hotspot()) {
2915     return (jbyteArray) JNIHandles::make_local(THREAD, res);
2916   }
2917 
2918   typeArrayOop ba = typeArrayOop(res);
2919   int ba_len = ba->length();
2920   jbyte* ba_buf = NEW_RESOURCE_ARRAY_IN_THREAD_RETURN_NULL(THREAD, jbyte, ba_len);
2921   if (ba_buf == nullptr) {
2922     JVMCI_THROW_MSG_NULL(InternalError,
2923               err_msg("could not allocate %d bytes", ba_len));
2924 
2925   }
2926   memcpy(ba_buf, ba->byte_at_addr(0), ba_len);
2927   JVMCIPrimitiveArray ba_dest = JVMCIENV->new_byteArray(ba_len, JVMCI_CHECK_NULL);
2928   JVMCIENV->copy_bytes_from(ba_buf, ba_dest, 0, ba_len);
2929   return JVMCIENV->get_jbyteArray(ba_dest);
2930 }
2931 
2932 C2V_VMENTRY_NULL(jbyteArray, getEncodedClassAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass),
2933                  jobject filter, jint filter_length, jlong filter_klass_pointers))
2934   InstanceKlass* holder = InstanceKlass::cast(UNPACK_PAIR(Klass, klass));
2935   return get_encoded_annotation_data(holder, holder->class_annotations(), true, filter_length, filter_klass_pointers, THREAD, JVMCIENV);
2936 C2V_END
2937 
2938 C2V_VMENTRY_NULL(jbyteArray, getEncodedExecutableAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(method),
2939                  jobject filter, jint filter_length, jlong filter_klass_pointers))
2940   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
2941   return get_encoded_annotation_data(method->method_holder(), method->annotations(), false, filter_length, filter_klass_pointers, THREAD, JVMCIENV);
2942 C2V_END
2943 
2944 C2V_VMENTRY_NULL(jbyteArray, getEncodedFieldAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jint index,
2945                  jobject filter, jint filter_length, jlong filter_klass_pointers))
2946   InstanceKlass* holder = check_field(InstanceKlass::cast(UNPACK_PAIR(Klass, klass)), index, JVMCIENV);
2947   fieldDescriptor fd(holder, index);
2948   return get_encoded_annotation_data(holder, fd.annotations(), false, filter_length, filter_klass_pointers, THREAD, JVMCIENV);
2949 C2V_END
2950 
2951 C2V_VMENTRY_NULL(jobjectArray, getFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address, jobjectArray current))
2952   FailedSpeculation* head = *((FailedSpeculation**)(address) failed_speculations_address);
2953   int result_length = 0;
2954   for (FailedSpeculation* fs = head; fs != nullptr; fs = fs->next()) {
2955     result_length++;
2956   }
2957   int current_length = 0;
2958   JVMCIObjectArray current_array = nullptr;
2959   if (current != nullptr) {
2960     current_array = JVMCIENV->wrap(current);
2961     current_length = JVMCIENV->get_length(current_array);
2962     if (current_length == result_length) {
2963       // No new failures
2964       return current;
2965     }
2966   }
2967   JVMCIObjectArray result = JVMCIENV->new_byte_array_array(result_length, JVMCI_CHECK_NULL);
2968   int result_index = 0;
2969   for (FailedSpeculation* fs = head; result_index < result_length; fs = fs->next()) {
2970     assert(fs != nullptr, "npe");
2971     JVMCIPrimitiveArray entry;
2972     if (result_index < current_length) {
2973       entry = (JVMCIPrimitiveArray) JVMCIENV->get_object_at(current_array, result_index);
2974     } else {
2975       entry = JVMCIENV->new_byteArray(fs->data_len(), JVMCI_CHECK_NULL);
2976       JVMCIENV->copy_bytes_from((jbyte*) fs->data(), entry, 0, fs->data_len());
2977     }
2978     JVMCIENV->put_object_at(result, result_index++, entry);
2979   }
2980   return JVMCIENV->get_jobjectArray(result);
2981 }
2982 
2983 C2V_VMENTRY_0(jlong, getFailedSpeculationsAddress, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
2984   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
2985   MethodData* method_data = method->method_data();
2986   if (method_data == nullptr) {
2987     ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
2988     method_data = MethodData::allocate(loader_data, method, CHECK_0);
2989     method->set_method_data(method_data);
2990   }
2991   return (jlong) method_data->get_failed_speculations_address();
2992 }
2993 
2994 C2V_VMENTRY(void, releaseFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address))
2995   FailedSpeculation::free_failed_speculations((FailedSpeculation**)(address) failed_speculations_address);
2996 }
2997 
2998 C2V_VMENTRY_0(jboolean, addFailedSpeculation, (JNIEnv* env, jobject, jlong failed_speculations_address, jbyteArray speculation_obj))
2999   JVMCIPrimitiveArray speculation_handle = JVMCIENV->wrap(speculation_obj);
3000   int speculation_len = JVMCIENV->get_length(speculation_handle);
3001   char* speculation = NEW_RESOURCE_ARRAY(char, speculation_len);
3002   JVMCIENV->copy_bytes_to(speculation_handle, (jbyte*) speculation, 0, speculation_len);
3003   return FailedSpeculation::add_failed_speculation(nullptr, (FailedSpeculation**)(address) failed_speculations_address, (address) speculation, speculation_len);
3004 }
3005 
3006 C2V_VMENTRY(void, callSystemExit, (JNIEnv* env, jobject, jint status))
3007   JavaValue result(T_VOID);
3008   JavaCallArguments jargs(1);
3009   jargs.push_int(status);
3010   JavaCalls::call_static(&result,
3011                        vmClasses::System_klass(),
3012                        vmSymbols::exit_method_name(),
3013                        vmSymbols::int_void_signature(),
3014                        &jargs,
3015                        CHECK);
3016 }
3017 
3018 C2V_VMENTRY_0(jlong, ticksNow, (JNIEnv* env, jobject))
3019   return CompilerEvent::ticksNow();
3020 }
3021 
3022 C2V_VMENTRY_0(jint, registerCompilerPhase, (JNIEnv* env, jobject, jstring jphase_name))
3023 #if INCLUDE_JFR
3024   JVMCIObject phase_name = JVMCIENV->wrap(jphase_name);
3025   const char *name = JVMCIENV->as_utf8_string(phase_name);
3026   return CompilerEvent::PhaseEvent::get_phase_id(name, true, true, true);
3027 #else
3028   return -1;
3029 #endif // !INCLUDE_JFR
3030 }
3031 
3032 C2V_VMENTRY(void, notifyCompilerPhaseEvent, (JNIEnv* env, jobject, jlong startTime, jint phase, jint compileId, jint level))
3033   EventCompilerPhase event;
3034   if (event.should_commit()) {
3035     CompilerEvent::PhaseEvent::post(event, startTime, phase, compileId, level);
3036   }
3037 }
3038 
3039 C2V_VMENTRY(void, notifyCompilerInliningEvent, (JNIEnv* env, jobject, jint compileId, ARGUMENT_PAIR(caller), ARGUMENT_PAIR(callee), jboolean succeeded, jstring jmessage, jint bci))
3040   EventCompilerInlining event;
3041   if (event.should_commit()) {
3042     Method* caller = UNPACK_PAIR(Method, caller);
3043     Method* callee = UNPACK_PAIR(Method, callee);
3044     JVMCIObject message = JVMCIENV->wrap(jmessage);
3045     CompilerEvent::InlineEvent::post(event, compileId, caller, callee, succeeded, JVMCIENV->as_utf8_string(message), bci);
3046   }
3047 }
3048 
3049 C2V_VMENTRY(void, setThreadLocalObject, (JNIEnv* env, jobject, jint id, jobject value))
3050   requireInHotSpot("setThreadLocalObject", JVMCI_CHECK);
3051   if (id == 0) {
3052     thread->set_jvmci_reserved_oop0(JNIHandles::resolve(value));
3053     return;
3054   }
3055   THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
3056             err_msg("%d is not a valid thread local id", id));
3057 }
3058 
3059 C2V_VMENTRY_NULL(jobject, getThreadLocalObject, (JNIEnv* env, jobject, jint id))
3060   requireInHotSpot("getThreadLocalObject", JVMCI_CHECK_NULL);
3061   if (id == 0) {
3062     return JNIHandles::make_local(thread->get_jvmci_reserved_oop0());
3063   }
3064   THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
3065               err_msg("%d is not a valid thread local id", id));
3066 }
3067 
3068 C2V_VMENTRY(void, setThreadLocalLong, (JNIEnv* env, jobject, jint id, jlong value))
3069   requireInHotSpot("setThreadLocalLong", JVMCI_CHECK);
3070   if (id == 0) {
3071     thread->set_jvmci_reserved0(value);
3072   } else if (id == 1) {
3073     thread->set_jvmci_reserved1(value);
3074   } else {
3075     THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
3076               err_msg("%d is not a valid thread local id", id));
3077   }
3078 }
3079 
3080 C2V_VMENTRY_0(jlong, getThreadLocalLong, (JNIEnv* env, jobject, jint id))
3081   requireInHotSpot("getThreadLocalLong", JVMCI_CHECK_0);
3082   if (id == 0) {
3083     return thread->get_jvmci_reserved0();
3084   } else if (id == 1) {
3085     return thread->get_jvmci_reserved1();
3086   } else {
3087     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
3088                 err_msg("%d is not a valid thread local id", id));
3089   }
3090 }
3091 
3092 #define CC (char*)  /*cast a literal from (const char*)*/
3093 #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &(c2v_ ## f))
3094 
3095 #define STRING                  "Ljava/lang/String;"
3096 #define OBJECT                  "Ljava/lang/Object;"
3097 #define CLASS                   "Ljava/lang/Class;"
3098 #define OBJECTCONSTANT          "Ljdk/vm/ci/hotspot/HotSpotObjectConstantImpl;"
3099 #define EXECUTABLE              "Ljava/lang/reflect/Executable;"
3100 #define STACK_TRACE_ELEMENT     "Ljava/lang/StackTraceElement;"
3101 #define INSTALLED_CODE          "Ljdk/vm/ci/code/InstalledCode;"
3102 #define BYTECODE_FRAME          "Ljdk/vm/ci/code/BytecodeFrame;"
3103 #define JAVACONSTANT            "Ljdk/vm/ci/meta/JavaConstant;"
3104 #define INSPECTED_FRAME_VISITOR "Ljdk/vm/ci/code/stack/InspectedFrameVisitor;"
3105 #define RESOLVED_METHOD         "Ljdk/vm/ci/meta/ResolvedJavaMethod;"
3106 #define FIELDINFO               "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl$FieldInfo;"
3107 #define HS_RESOLVED_TYPE        "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaType;"
3108 #define HS_INSTALLED_CODE       "Ljdk/vm/ci/hotspot/HotSpotInstalledCode;"
3109 #define HS_NMETHOD              "Ljdk/vm/ci/hotspot/HotSpotNmethod;"
3110 #define HS_COMPILED_CODE        "Ljdk/vm/ci/hotspot/HotSpotCompiledCode;"
3111 #define HS_CONFIG               "Ljdk/vm/ci/hotspot/HotSpotVMConfig;"
3112 #define HS_STACK_FRAME_REF      "Ljdk/vm/ci/hotspot/HotSpotStackFrameReference;"
3113 #define HS_SPECULATION_LOG      "Ljdk/vm/ci/hotspot/HotSpotSpeculationLog;"
3114 #define REFLECTION_EXECUTABLE   "Ljava/lang/reflect/Executable;"
3115 #define REFLECTION_FIELD        "Ljava/lang/reflect/Field;"
3116 
3117 // Types wrapping VM pointers. The ...2 macro is for a pair: (wrapper, pointer)
3118 #define HS_METHOD               "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;"
3119 #define HS_METHOD2              "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;J"
3120 #define HS_KLASS                "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;"
3121 #define HS_KLASS2               "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;J"
3122 #define HS_CONSTANT_POOL        "Ljdk/vm/ci/hotspot/HotSpotConstantPool;"
3123 #define HS_CONSTANT_POOL2       "Ljdk/vm/ci/hotspot/HotSpotConstantPool;J"
3124 
3125 JNINativeMethod CompilerToVM::methods[] = {
3126   {CC "getBytecode",                                  CC "(" HS_METHOD2 ")[B",                                                              FN_PTR(getBytecode)},
3127   {CC "getExceptionTableStart",                       CC "(" HS_METHOD2 ")J",                                                               FN_PTR(getExceptionTableStart)},
3128   {CC "getExceptionTableLength",                      CC "(" HS_METHOD2 ")I",                                                               FN_PTR(getExceptionTableLength)},
3129   {CC "findUniqueConcreteMethod",                     CC "(" HS_KLASS2 HS_METHOD2 ")" HS_METHOD,                                            FN_PTR(findUniqueConcreteMethod)},
3130   {CC "getImplementor",                               CC "(" HS_KLASS2 ")" HS_KLASS,                                                        FN_PTR(getImplementor)},
3131   {CC "getStackTraceElement",                         CC "(" HS_METHOD2 "I)" STACK_TRACE_ELEMENT,                                           FN_PTR(getStackTraceElement)},
3132   {CC "methodIsIgnoredBySecurityStackWalk",           CC "(" HS_METHOD2 ")Z",                                                               FN_PTR(methodIsIgnoredBySecurityStackWalk)},
3133   {CC "setNotInlinableOrCompilable",                  CC "(" HS_METHOD2 ")V",                                                               FN_PTR(setNotInlinableOrCompilable)},
3134   {CC "isCompilable",                                 CC "(" HS_METHOD2 ")Z",                                                               FN_PTR(isCompilable)},
3135   {CC "hasNeverInlineDirective",                      CC "(" HS_METHOD2 ")Z",                                                               FN_PTR(hasNeverInlineDirective)},
3136   {CC "shouldInlineMethod",                           CC "(" HS_METHOD2 ")Z",                                                               FN_PTR(shouldInlineMethod)},
3137   {CC "lookupType",                                   CC "(" STRING HS_KLASS2 "IZ)" HS_RESOLVED_TYPE,                                       FN_PTR(lookupType)},
3138   {CC "lookupJClass",                                 CC "(J)" HS_RESOLVED_TYPE,                                                            FN_PTR(lookupJClass)},
3139   {CC "getArrayType",                                 CC "(C" HS_KLASS2 ")" HS_KLASS,                                                       FN_PTR(getArrayType)},
3140   {CC "lookupClass",                                  CC "(" CLASS ")" HS_RESOLVED_TYPE,                                                    FN_PTR(lookupClass)},
3141   {CC "lookupNameInPool",                             CC "(" HS_CONSTANT_POOL2 "II)" STRING,                                                FN_PTR(lookupNameInPool)},
3142   {CC "lookupNameAndTypeRefIndexInPool",              CC "(" HS_CONSTANT_POOL2 "II)I",                                                      FN_PTR(lookupNameAndTypeRefIndexInPool)},
3143   {CC "lookupSignatureInPool",                        CC "(" HS_CONSTANT_POOL2 "II)" STRING,                                                FN_PTR(lookupSignatureInPool)},
3144   {CC "lookupKlassRefIndexInPool",                    CC "(" HS_CONSTANT_POOL2 "II)I",                                                      FN_PTR(lookupKlassRefIndexInPool)},
3145   {CC "lookupKlassInPool",                            CC "(" HS_CONSTANT_POOL2 "I)Ljava/lang/Object;",                                      FN_PTR(lookupKlassInPool)},
3146   {CC "lookupAppendixInPool",                         CC "(" HS_CONSTANT_POOL2 "I)" OBJECTCONSTANT,                                         FN_PTR(lookupAppendixInPool)},
3147   {CC "lookupMethodInPool",                           CC "(" HS_CONSTANT_POOL2 "IB" HS_METHOD2 ")" HS_METHOD,                               FN_PTR(lookupMethodInPool)},
3148   {CC "lookupConstantInPool",                         CC "(" HS_CONSTANT_POOL2 "IZ)" JAVACONSTANT,                                          FN_PTR(lookupConstantInPool)},
3149   {CC "constantPoolRemapInstructionOperandFromCache", CC "(" HS_CONSTANT_POOL2 "I)I",                                                       FN_PTR(constantPoolRemapInstructionOperandFromCache)},
3150   {CC "resolveBootstrapMethod",                       CC "(" HS_CONSTANT_POOL2 "I)[" OBJECT,                                                FN_PTR(resolveBootstrapMethod)},
3151   {CC "getUncachedStringInPool",                      CC "(" HS_CONSTANT_POOL2 "I)" JAVACONSTANT,                                           FN_PTR(getUncachedStringInPool)},
3152   {CC "resolveTypeInPool",                            CC "(" HS_CONSTANT_POOL2 "I)" HS_KLASS,                                               FN_PTR(resolveTypeInPool)},
3153   {CC "resolveFieldInPool",                           CC "(" HS_CONSTANT_POOL2 "I" HS_METHOD2 "B[I)" HS_KLASS,                              FN_PTR(resolveFieldInPool)},
3154   {CC "decodeFieldIndexToCPIndex",                    CC "(" HS_CONSTANT_POOL2 "I)I",                                                       FN_PTR(decodeFieldIndexToCPIndex)},
3155   {CC "decodeIndyIndexToCPIndex",                     CC "(" HS_CONSTANT_POOL2 "IZ)I",                                                      FN_PTR(decodeIndyIndexToCPIndex)},
3156   {CC "resolveInvokeHandleInPool",                    CC "(" HS_CONSTANT_POOL2 "I)V",                                                       FN_PTR(resolveInvokeHandleInPool)},
3157   {CC "isResolvedInvokeHandleInPool",                 CC "(" HS_CONSTANT_POOL2 "I)I",                                                       FN_PTR(isResolvedInvokeHandleInPool)},
3158   {CC "resolveMethod",                                CC "(" HS_KLASS2 HS_METHOD2 HS_KLASS2 ")" HS_METHOD,                                  FN_PTR(resolveMethod)},
3159   {CC "getSignaturePolymorphicHolders",               CC "()[" STRING,                                                                      FN_PTR(getSignaturePolymorphicHolders)},
3160   {CC "getVtableIndexForInterfaceMethod",             CC "(" HS_KLASS2 HS_METHOD2 ")I",                                                     FN_PTR(getVtableIndexForInterfaceMethod)},
3161   {CC "getClassInitializer",                          CC "(" HS_KLASS2 ")" HS_METHOD,                                                       FN_PTR(getClassInitializer)},
3162   {CC "hasFinalizableSubclass",                       CC "(" HS_KLASS2 ")Z",                                                                FN_PTR(hasFinalizableSubclass)},
3163   {CC "getMaxCallTargetOffset",                       CC "(J)J",                                                                            FN_PTR(getMaxCallTargetOffset)},
3164   {CC "asResolvedJavaMethod",                         CC "(" EXECUTABLE ")" HS_METHOD,                                                      FN_PTR(asResolvedJavaMethod)},
3165   {CC "getResolvedJavaMethod",                        CC "(" OBJECTCONSTANT "J)" HS_METHOD,                                                 FN_PTR(getResolvedJavaMethod)},
3166   {CC "getConstantPool",                              CC "(" OBJECT "JZ)" HS_CONSTANT_POOL,                                                 FN_PTR(getConstantPool)},
3167   {CC "getResolvedJavaType0",                         CC "(Ljava/lang/Object;JZ)" HS_KLASS,                                                 FN_PTR(getResolvedJavaType0)},
3168   {CC "readConfiguration",                            CC "()[" OBJECT,                                                                      FN_PTR(readConfiguration)},
3169   {CC "installCode0",                                 CC "(JJZ" HS_COMPILED_CODE "[" OBJECT INSTALLED_CODE "J[B)I",                         FN_PTR(installCode0)},
3170   {CC "getInstallCodeFlags",                          CC "()I",                                                                             FN_PTR(getInstallCodeFlags)},
3171   {CC "resetCompilationStatistics",                   CC "()V",                                                                             FN_PTR(resetCompilationStatistics)},
3172   {CC "disassembleCodeBlob",                          CC "(" INSTALLED_CODE ")" STRING,                                                     FN_PTR(disassembleCodeBlob)},
3173   {CC "executeHotSpotNmethod",                        CC "([" OBJECT HS_NMETHOD ")" OBJECT,                                                 FN_PTR(executeHotSpotNmethod)},
3174   {CC "getLineNumberTable",                           CC "(" HS_METHOD2 ")[J",                                                              FN_PTR(getLineNumberTable)},
3175   {CC "getLocalVariableTableStart",                   CC "(" HS_METHOD2 ")J",                                                               FN_PTR(getLocalVariableTableStart)},
3176   {CC "getLocalVariableTableLength",                  CC "(" HS_METHOD2 ")I",                                                               FN_PTR(getLocalVariableTableLength)},
3177   {CC "reprofile",                                    CC "(" HS_METHOD2 ")V",                                                               FN_PTR(reprofile)},
3178   {CC "invalidateHotSpotNmethod",                     CC "(" HS_NMETHOD "Z)V",                                                              FN_PTR(invalidateHotSpotNmethod)},
3179   {CC "collectCounters",                              CC "()[J",                                                                            FN_PTR(collectCounters)},
3180   {CC "getCountersSize",                              CC "()I",                                                                             FN_PTR(getCountersSize)},
3181   {CC "setCountersSize",                              CC "(I)Z",                                                                            FN_PTR(setCountersSize)},
3182   {CC "allocateCompileId",                            CC "(" HS_METHOD2 "I)I",                                                              FN_PTR(allocateCompileId)},
3183   {CC "isMature",                                     CC "(J)Z",                                                                            FN_PTR(isMature)},
3184   {CC "hasCompiledCodeForOSR",                        CC "(" HS_METHOD2 "II)Z",                                                             FN_PTR(hasCompiledCodeForOSR)},
3185   {CC "getSymbol",                                    CC "(J)" STRING,                                                                      FN_PTR(getSymbol)},
3186   {CC "getSignatureName",                             CC "(J)" STRING,                                                                      FN_PTR(getSignatureName)},
3187   {CC "iterateFrames",                                CC "([" RESOLVED_METHOD "[" RESOLVED_METHOD "I" INSPECTED_FRAME_VISITOR ")" OBJECT,   FN_PTR(iterateFrames)},
3188   {CC "materializeVirtualObjects",                    CC "(" HS_STACK_FRAME_REF "Z)V",                                                      FN_PTR(materializeVirtualObjects)},
3189   {CC "shouldDebugNonSafepoints",                     CC "()Z",                                                                             FN_PTR(shouldDebugNonSafepoints)},
3190   {CC "writeDebugOutput",                             CC "(JIZ)V",                                                                          FN_PTR(writeDebugOutput)},
3191   {CC "flushDebugOutput",                             CC "()V",                                                                             FN_PTR(flushDebugOutput)},
3192   {CC "methodDataProfileDataSize",                    CC "(JI)I",                                                                           FN_PTR(methodDataProfileDataSize)},
3193   {CC "methodDataExceptionSeen",                      CC "(JI)I",                                                                           FN_PTR(methodDataExceptionSeen)},
3194   {CC "interpreterFrameSize",                         CC "(" BYTECODE_FRAME ")I",                                                           FN_PTR(interpreterFrameSize)},
3195   {CC "compileToBytecode",                            CC "(" OBJECTCONSTANT ")V",                                                           FN_PTR(compileToBytecode)},
3196   {CC "getFlagValue",                                 CC "(" STRING ")" OBJECT,                                                             FN_PTR(getFlagValue)},
3197   {CC "getInterfaces",                                CC "(" HS_KLASS2 ")[" HS_KLASS,                                                       FN_PTR(getInterfaces)},
3198   {CC "getComponentType",                             CC "(" HS_KLASS2 ")" HS_RESOLVED_TYPE,                                                FN_PTR(getComponentType)},
3199   {CC "ensureInitialized",                            CC "(" HS_KLASS2 ")V",                                                                FN_PTR(ensureInitialized)},
3200   {CC "ensureLinked",                                 CC "(" HS_KLASS2 ")V",                                                                FN_PTR(ensureLinked)},
3201   {CC "getIdentityHashCode",                          CC "(" OBJECTCONSTANT ")I",                                                           FN_PTR(getIdentityHashCode)},
3202   {CC "isInternedString",                             CC "(" OBJECTCONSTANT ")Z",                                                           FN_PTR(isInternedString)},
3203   {CC "unboxPrimitive",                               CC "(" OBJECTCONSTANT ")" OBJECT,                                                     FN_PTR(unboxPrimitive)},
3204   {CC "boxPrimitive",                                 CC "(" OBJECT ")" OBJECTCONSTANT,                                                     FN_PTR(boxPrimitive)},
3205   {CC "getDeclaredConstructors",                      CC "(" HS_KLASS2 ")[" RESOLVED_METHOD,                                                FN_PTR(getDeclaredConstructors)},
3206   {CC "getDeclaredMethods",                           CC "(" HS_KLASS2 ")[" RESOLVED_METHOD,                                                FN_PTR(getDeclaredMethods)},
3207   {CC "getDeclaredFieldsInfo",                        CC "(" HS_KLASS2 ")[" FIELDINFO,                                                      FN_PTR(getDeclaredFieldsInfo)},
3208   {CC "readStaticFieldValue",                         CC "(" HS_KLASS2 "JC)" JAVACONSTANT,                                                  FN_PTR(readStaticFieldValue)},
3209   {CC "readFieldValue",                               CC "(" OBJECTCONSTANT HS_KLASS2 "JC)" JAVACONSTANT,                                   FN_PTR(readFieldValue)},
3210   {CC "isInstance",                                   CC "(" HS_KLASS2 OBJECTCONSTANT ")Z",                                                 FN_PTR(isInstance)},
3211   {CC "isAssignableFrom",                             CC "(" HS_KLASS2 HS_KLASS2 ")Z",                                                      FN_PTR(isAssignableFrom)},
3212   {CC "isTrustedForIntrinsics",                       CC "(" HS_KLASS2 ")Z",                                                                FN_PTR(isTrustedForIntrinsics)},
3213   {CC "asJavaType",                                   CC "(" OBJECTCONSTANT ")" HS_RESOLVED_TYPE,                                           FN_PTR(asJavaType)},
3214   {CC "asString",                                     CC "(" OBJECTCONSTANT ")" STRING,                                                     FN_PTR(asString)},
3215   {CC "equals",                                       CC "(" OBJECTCONSTANT "J" OBJECTCONSTANT "J)Z",                                       FN_PTR(equals)},
3216   {CC "getJavaMirror",                                CC "(" HS_KLASS2 ")" OBJECTCONSTANT,                                                  FN_PTR(getJavaMirror)},
3217   {CC "getArrayLength",                               CC "(" OBJECTCONSTANT ")I",                                                           FN_PTR(getArrayLength)},
3218   {CC "readArrayElement",                             CC "(" OBJECTCONSTANT "I)Ljava/lang/Object;",                                         FN_PTR(readArrayElement)},
3219   {CC "arrayBaseOffset",                              CC "(C)I",                                                                            FN_PTR(arrayBaseOffset)},
3220   {CC "arrayIndexScale",                              CC "(C)I",                                                                            FN_PTR(arrayIndexScale)},
3221   {CC "releaseClearedOopHandles",                     CC "()V",                                                                             FN_PTR(releaseClearedOopHandles)},
3222   {CC "registerNativeMethods",                        CC "(" CLASS ")[J",                                                                   FN_PTR(registerNativeMethods)},
3223   {CC "isCurrentThreadAttached",                      CC "()Z",                                                                             FN_PTR(isCurrentThreadAttached)},
3224   {CC "getCurrentJavaThread",                         CC "()J",                                                                             FN_PTR(getCurrentJavaThread)},
3225   {CC "attachCurrentThread",                          CC "([BZ[J)Z",                                                                        FN_PTR(attachCurrentThread)},
3226   {CC "detachCurrentThread",                          CC "(Z)Z",                                                                            FN_PTR(detachCurrentThread)},
3227   {CC "translate",                                    CC "(" OBJECT "Z)J",                                                                  FN_PTR(translate)},
3228   {CC "unhand",                                       CC "(J)" OBJECT,                                                                      FN_PTR(unhand)},
3229   {CC "updateHotSpotNmethod",                         CC "(" HS_NMETHOD ")V",                                                               FN_PTR(updateHotSpotNmethod)},
3230   {CC "getCode",                                      CC "(" HS_INSTALLED_CODE ")[B",                                                       FN_PTR(getCode)},
3231   {CC "asReflectionExecutable",                       CC "(" HS_METHOD2 ")" REFLECTION_EXECUTABLE,                                          FN_PTR(asReflectionExecutable)},
3232   {CC "asReflectionField",                            CC "(" HS_KLASS2 "I)" REFLECTION_FIELD,                                               FN_PTR(asReflectionField)},
3233   {CC "getEncodedClassAnnotationData",                CC "(" HS_KLASS2 OBJECT "IJ)[B",                                                      FN_PTR(getEncodedClassAnnotationData)},
3234   {CC "getEncodedExecutableAnnotationData",           CC "(" HS_METHOD2 OBJECT "IJ)[B",                                                     FN_PTR(getEncodedExecutableAnnotationData)},
3235   {CC "getEncodedFieldAnnotationData",                CC "(" HS_KLASS2 "I" OBJECT "IJ)[B",                                                  FN_PTR(getEncodedFieldAnnotationData)},
3236   {CC "getFailedSpeculations",                        CC "(J[[B)[[B",                                                                       FN_PTR(getFailedSpeculations)},
3237   {CC "getFailedSpeculationsAddress",                 CC "(" HS_METHOD2 ")J",                                                               FN_PTR(getFailedSpeculationsAddress)},
3238   {CC "releaseFailedSpeculations",                    CC "(J)V",                                                                            FN_PTR(releaseFailedSpeculations)},
3239   {CC "addFailedSpeculation",                         CC "(J[B)Z",                                                                          FN_PTR(addFailedSpeculation)},
3240   {CC "callSystemExit",                               CC "(I)V",                                                                            FN_PTR(callSystemExit)},
3241   {CC "ticksNow",                                     CC "()J",                                                                             FN_PTR(ticksNow)},
3242   {CC "getThreadLocalObject",                         CC "(I)" OBJECT,                                                                      FN_PTR(getThreadLocalObject)},
3243   {CC "setThreadLocalObject",                         CC "(I" OBJECT ")V",                                                                  FN_PTR(setThreadLocalObject)},
3244   {CC "getThreadLocalLong",                           CC "(I)J",                                                                            FN_PTR(getThreadLocalLong)},
3245   {CC "setThreadLocalLong",                           CC "(IJ)V",                                                                           FN_PTR(setThreadLocalLong)},
3246   {CC "registerCompilerPhase",                        CC "(" STRING ")I",                                                                   FN_PTR(registerCompilerPhase)},
3247   {CC "notifyCompilerPhaseEvent",                     CC "(JIII)V",                                                                         FN_PTR(notifyCompilerPhaseEvent)},
3248   {CC "notifyCompilerInliningEvent",                  CC "(I" HS_METHOD2 HS_METHOD2 "ZLjava/lang/String;I)V",                               FN_PTR(notifyCompilerInliningEvent)},
3249 };
3250 
3251 int CompilerToVM::methods_count() {
3252   return sizeof(methods) / sizeof(JNINativeMethod);
3253 }