1 /*
   2  * Copyright (c) 2011, 2022, 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/linkResolver.hpp"
  37 #include "interpreter/bytecodeStream.hpp"
  38 #include "jfr/jfrEvents.hpp"
  39 #include "jvmci/jvmciCompilerToVM.hpp"
  40 #include "jvmci/jvmciCodeInstaller.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/instanceMirrorKlass.hpp"
  48 #include "oops/instanceKlass.inline.hpp"
  49 #include "oops/method.inline.hpp"
  50 #include "oops/typeArrayOop.inline.hpp"
  51 #include "prims/jvmtiExport.hpp"
  52 #include "prims/methodHandles.hpp"
  53 #include "prims/nativeLookup.hpp"
  54 #include "runtime/atomic.hpp"
  55 #include "runtime/deoptimization.hpp"
  56 #include "runtime/fieldDescriptor.inline.hpp"
  57 #include "runtime/frame.inline.hpp"
  58 #include "runtime/globals_extension.hpp"
  59 #include "runtime/interfaceSupport.inline.hpp"
  60 #include "runtime/jniHandles.inline.hpp"
  61 #include "runtime/reflectionUtils.hpp"
  62 #include "runtime/stackFrameStream.inline.hpp"
  63 #include "runtime/timerTrace.hpp"
  64 #include "runtime/vframe_hp.hpp"
  65 #include "runtime/vframe.inline.hpp"
  66 #if INCLUDE_JFR
  67 #include "jfr/jfr.hpp"
  68 #endif
  69 
  70 JVMCIKlassHandle::JVMCIKlassHandle(Thread* thread, Klass* klass) {
  71   _thread = thread;
  72   _klass = klass;
  73   if (klass != NULL) {
  74     _holder = Handle(_thread, klass->klass_holder());
  75   }
  76 }
  77 
  78 JVMCIKlassHandle& JVMCIKlassHandle::operator=(Klass* klass) {
  79   _klass = klass;
  80   if (klass != NULL) {
  81     _holder = Handle(_thread, klass->klass_holder());
  82   }
  83   return *this;
  84 }
  85 
  86 static void requireInHotSpot(const char* caller, JVMCI_TRAPS) {
  87   if (!JVMCIENV->is_hotspot()) {
  88     JVMCI_THROW_MSG(IllegalStateException, err_msg("Cannot call %s from JVMCI shared library", caller));
  89   }
  90 }
  91 
  92 class JVMCITraceMark : public StackObj {
  93   const char* _msg;
  94  public:
  95   JVMCITraceMark(const char* msg) {
  96     _msg = msg;
  97     JVMCI_event_2("Enter %s", _msg);
  98   }
  99   ~JVMCITraceMark() {
 100     JVMCI_event_2(" Exit %s", _msg);
 101   }
 102 };
 103 
 104 
 105 Handle JavaArgumentUnboxer::next_arg(BasicType expectedType) {
 106   assert(_index < _args->length(), "out of bounds");
 107   oop arg=((objArrayOop) (_args))->obj_at(_index++);
 108   assert(expectedType == T_OBJECT || java_lang_boxing_object::is_instance(arg, expectedType), "arg type mismatch");
 109   return Handle(Thread::current(), arg);
 110 }
 111 
 112 // Bring the JVMCI compiler thread into the VM state.
 113 #define JVMCI_VM_ENTRY_MARK                                       \
 114   MACOS_AARCH64_ONLY(ThreadWXEnable __wx(WXWrite, thread));       \
 115   ThreadInVMfromNative __tiv(thread);                             \
 116   HandleMarkCleaner __hm(thread);                                 \
 117   JavaThread* THREAD = thread;                                        \
 118   debug_only(VMNativeEntryWrapper __vew;)
 119 
 120 // Native method block that transitions current thread to '_thread_in_vm'.
 121 #define C2V_BLOCK(result_type, name, signature)      \
 122   JVMCI_VM_ENTRY_MARK;                               \
 123   ResourceMark rm;                                   \
 124   JNI_JVMCIENV(JVMCI::compilation_tick(thread), env);
 125 
 126 static JavaThread* get_current_thread(bool allow_null=true) {
 127   Thread* thread = Thread::current_or_null_safe();
 128   if (thread == NULL) {
 129     assert(allow_null, "npe");
 130     return NULL;
 131   }
 132   return JavaThread::cast(thread);
 133 }
 134 
 135 // Entry to native method implementation that transitions
 136 // current thread to '_thread_in_vm'.
 137 #define C2V_VMENTRY(result_type, name, signature)        \
 138   JNIEXPORT result_type JNICALL c2v_ ## name signature { \
 139   JavaThread* thread = get_current_thread();             \
 140   if (thread == NULL) {                                  \
 141     env->ThrowNew(JNIJVMCI::InternalError::clazz(),      \
 142         err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
 143     return;                                              \
 144   }                                                      \
 145   JVMCITraceMark jtm("CompilerToVM::" #name);            \
 146   C2V_BLOCK(result_type, name, signature)
 147 
 148 #define C2V_VMENTRY_(result_type, name, signature, result) \
 149   JNIEXPORT result_type JNICALL c2v_ ## name signature { \
 150   JavaThread* thread = get_current_thread();             \
 151   if (thread == NULL) {                                  \
 152     env->ThrowNew(JNIJVMCI::InternalError::clazz(),      \
 153         err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
 154     return result;                                       \
 155   }                                                      \
 156   JVMCITraceMark jtm("CompilerToVM::" #name);            \
 157   C2V_BLOCK(result_type, name, signature)
 158 
 159 #define C2V_VMENTRY_NULL(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, NULL)
 160 #define C2V_VMENTRY_0(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, 0)
 161 
 162 // Entry to native method implementation that does not transition
 163 // current thread to '_thread_in_vm'.
 164 #define C2V_VMENTRY_PREFIX(result_type, name, signature) \
 165   JNIEXPORT result_type JNICALL c2v_ ## name signature { \
 166   JavaThread* thread = get_current_thread();
 167 
 168 #define C2V_END }
 169 
 170 #define JNI_THROW(caller, name, msg) do {                                         \
 171     jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg);               \
 172     if (__throw_res != JNI_OK) {                                                  \
 173       tty->print_cr("Throwing " #name " in " caller " returned %d", __throw_res); \
 174     }                                                                             \
 175     return;                                                                       \
 176   } while (0);
 177 
 178 #define JNI_THROW_(caller, name, msg, result) do {                                \
 179     jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg);               \
 180     if (__throw_res != JNI_OK) {                                                  \
 181       tty->print_cr("Throwing " #name " in " caller " returned %d", __throw_res); \
 182     }                                                                             \
 183     return result;                                                                \
 184   } while (0)
 185 
 186 jobjectArray readConfiguration0(JNIEnv *env, JVMCI_TRAPS);
 187 
 188 C2V_VMENTRY_NULL(jobjectArray, readConfiguration, (JNIEnv* env))
 189   jobjectArray config = readConfiguration0(env, JVMCI_CHECK_NULL);
 190   return config;
 191 }
 192 
 193 C2V_VMENTRY_NULL(jobject, getFlagValue, (JNIEnv* env, jobject c2vm, jobject name_handle))
 194 #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();
 195 #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();
 196   JVMCIObject name = JVMCIENV->wrap(name_handle);
 197   if (name.is_null()) {
 198     JVMCI_THROW_NULL(NullPointerException);
 199   }
 200   const char* cstring = JVMCIENV->as_utf8_string(name);
 201   const JVMFlag* flag = JVMFlag::find_declared_flag(cstring);
 202   if (flag == NULL) {
 203     return c2vm;
 204   }
 205   if (flag->is_bool()) {
 206     jvalue prim;
 207     prim.z = flag->get_bool();
 208     JVMCIObject box = JVMCIENV->create_box(T_BOOLEAN, &prim, JVMCI_CHECK_NULL);
 209     return JVMCIENV->get_jobject(box);
 210   } else if (flag->is_ccstr()) {
 211     JVMCIObject value = JVMCIENV->create_string(flag->get_ccstr(), JVMCI_CHECK_NULL);
 212     return JVMCIENV->get_jobject(value);
 213   } else if (flag->is_intx()) {
 214     RETURN_BOXED_LONG(flag->get_intx());
 215   } else if (flag->is_int()) {
 216     RETURN_BOXED_LONG(flag->get_int());
 217   } else if (flag->is_uint()) {
 218     RETURN_BOXED_LONG(flag->get_uint());
 219   } else if (flag->is_uint64_t()) {
 220     RETURN_BOXED_LONG(flag->get_uint64_t());
 221   } else if (flag->is_size_t()) {
 222     RETURN_BOXED_LONG(flag->get_size_t());
 223   } else if (flag->is_uintx()) {
 224     RETURN_BOXED_LONG(flag->get_uintx());
 225   } else if (flag->is_double()) {
 226     RETURN_BOXED_DOUBLE(flag->get_double());
 227   } else {
 228     JVMCI_ERROR_NULL("VM flag %s has unsupported type %s", flag->name(), flag->type_string());
 229   }
 230 #undef RETURN_BOXED_LONG
 231 #undef RETURN_BOXED_DOUBLE
 232 C2V_END
 233 
 234 // Macros for argument pairs representing a wrapper object and its wrapped VM pointer
 235 #define ARGUMENT_PAIR(name) jobject name ## _obj, jlong name ## _pointer
 236 #define UNPACK_PAIR(type, name) ((type*) name ## _pointer)
 237 
 238 C2V_VMENTRY_NULL(jbyteArray, getBytecode, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 239   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
 240 
 241   int code_size = method->code_size();
 242   jbyte* reconstituted_code = NEW_RESOURCE_ARRAY(jbyte, code_size);
 243 
 244   guarantee(method->method_holder()->is_rewritten(), "Method's holder should be rewritten");
 245   // iterate over all bytecodes and replace non-Java bytecodes
 246 
 247   for (BytecodeStream s(method); s.next() != Bytecodes::_illegal; ) {
 248     Bytecodes::Code code = s.code();
 249     Bytecodes::Code raw_code = s.raw_code();
 250     int bci = s.bci();
 251     int len = s.instruction_size();
 252 
 253     // Restore original byte code.
 254     reconstituted_code[bci] =  (jbyte) (s.is_wide()? Bytecodes::_wide : code);
 255     if (len > 1) {
 256       memcpy(reconstituted_code + (bci + 1), s.bcp()+1, len-1);
 257     }
 258 
 259     if (len > 1) {
 260       // Restore the big-endian constant pool indexes.
 261       // Cf. Rewriter::scan_method
 262       switch (code) {
 263         case Bytecodes::_getstatic:
 264         case Bytecodes::_putstatic:
 265         case Bytecodes::_getfield:
 266         case Bytecodes::_putfield:
 267         case Bytecodes::_invokevirtual:
 268         case Bytecodes::_invokespecial:
 269         case Bytecodes::_invokestatic:
 270         case Bytecodes::_invokeinterface:
 271         case Bytecodes::_invokehandle: {
 272           int cp_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
 273           Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
 274           break;
 275         }
 276 
 277         case Bytecodes::_invokedynamic: {
 278           int cp_index = Bytes::get_native_u4((address) reconstituted_code + (bci + 1));
 279           Bytes::put_Java_u4((address) reconstituted_code + (bci + 1), (u4) cp_index);
 280           break;
 281         }
 282 
 283         default:
 284           break;
 285       }
 286 
 287       // Not all ldc byte code are rewritten.
 288       switch (raw_code) {
 289         case Bytecodes::_fast_aldc: {
 290           int cpc_index = reconstituted_code[bci + 1] & 0xff;
 291           int cp_index = method->constants()->object_to_cp_index(cpc_index);
 292           assert(cp_index < method->constants()->length(), "sanity check");
 293           reconstituted_code[bci + 1] = (jbyte) cp_index;
 294           break;
 295         }
 296 
 297         case Bytecodes::_fast_aldc_w: {
 298           int cpc_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
 299           int cp_index = method->constants()->object_to_cp_index(cpc_index);
 300           assert(cp_index < method->constants()->length(), "sanity check");
 301           Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
 302           break;
 303         }
 304 
 305         default:
 306           break;
 307       }
 308     }
 309   }
 310 
 311   JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL);
 312   JVMCIENV->copy_bytes_from(reconstituted_code, result, 0, code_size);
 313   return JVMCIENV->get_jbyteArray(result);
 314 C2V_END
 315 
 316 C2V_VMENTRY_0(jint, getExceptionTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 317   Method* method = UNPACK_PAIR(Method, method);
 318   return method->exception_table_length();
 319 C2V_END
 320 
 321 C2V_VMENTRY_0(jlong, getExceptionTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 322   Method* method = UNPACK_PAIR(Method, method);
 323   if (method->exception_table_length() == 0) {
 324     return 0L;
 325   }
 326   return (jlong) (address) method->exception_table_start();
 327 C2V_END
 328 
 329 C2V_VMENTRY_NULL(jobject, asResolvedJavaMethod, (JNIEnv* env, jobject, jobject executable_handle))
 330   requireInHotSpot("asResolvedJavaMethod", JVMCI_CHECK_NULL);
 331   oop executable = JNIHandles::resolve(executable_handle);
 332   oop mirror = NULL;
 333   int slot = 0;
 334 
 335   if (executable->klass() == vmClasses::reflect_Constructor_klass()) {
 336     mirror = java_lang_reflect_Constructor::clazz(executable);
 337     slot = java_lang_reflect_Constructor::slot(executable);
 338   } else {
 339     assert(executable->klass() == vmClasses::reflect_Method_klass(), "wrong type");
 340     mirror = java_lang_reflect_Method::clazz(executable);
 341     slot = java_lang_reflect_Method::slot(executable);
 342   }
 343   Klass* holder = java_lang_Class::as_Klass(mirror);
 344   methodHandle method (THREAD, InstanceKlass::cast(holder)->method_with_idnum(slot));
 345   JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
 346   return JVMCIENV->get_jobject(result);
 347 }
 348 
 349 C2V_VMENTRY_NULL(jobject, getResolvedJavaMethod, (JNIEnv* env, jobject, jobject base, jlong offset))
 350   Method* method = NULL;
 351   JVMCIObject base_object = JVMCIENV->wrap(base);
 352   if (base_object.is_null()) {
 353     method = *((Method**)(offset));
 354   } else {
 355     Handle obj = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
 356     if (obj->is_a(vmClasses::ResolvedMethodName_klass())) {
 357       method = (Method*) (intptr_t) obj->long_field(offset);
 358     } else {
 359       JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", obj->klass()->external_name()));
 360     }
 361   }
 362   if (method == NULL) {
 363     JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", JVMCIENV->klass_name(base_object)));
 364   }
 365   assert (method->is_method(), "invalid read");
 366   JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, method), JVMCI_CHECK_NULL);
 367   return JVMCIENV->get_jobject(result);
 368 }
 369 
 370 C2V_VMENTRY_NULL(jobject, getConstantPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass_or_method), jboolean is_klass))
 371   ConstantPool* cp = NULL;
 372   if (UNPACK_PAIR(address, klass_or_method) == 0) {
 373     JVMCI_THROW_NULL(NullPointerException);
 374   }
 375   if (!is_klass) {
 376     cp = (UNPACK_PAIR(Method, klass_or_method))->constMethod()->constants();
 377   } else {
 378     cp = InstanceKlass::cast(UNPACK_PAIR(Klass, klass_or_method))->constants();
 379   }
 380 
 381   JVMCIObject result = JVMCIENV->get_jvmci_constant_pool(constantPoolHandle(THREAD, cp), JVMCI_CHECK_NULL);
 382   return JVMCIENV->get_jobject(result);
 383 }
 384 
 385 C2V_VMENTRY_NULL(jobject, getResolvedJavaType0, (JNIEnv* env, jobject, jobject base, jlong offset, jboolean compressed))
 386   JVMCIKlassHandle klass(THREAD);
 387   JVMCIObject base_object = JVMCIENV->wrap(base);
 388   jlong base_address = 0;
 389   if (base_object.is_non_null() && offset == oopDesc::klass_offset_in_bytes()) {
 390     if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
 391       Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
 392       klass = base_oop->klass();
 393     } else {
 394       assert(false, "What types are we actually expecting here?");
 395     }
 396   } else if (!compressed) {
 397     if (base_object.is_non_null()) {
 398       if (JVMCIENV->isa_HotSpotResolvedJavaMethodImpl(base_object)) {
 399         base_address = (intptr_t) JVMCIENV->asMethod(base_object);
 400       } else if (JVMCIENV->isa_HotSpotConstantPool(base_object)) {
 401         base_address = (intptr_t) JVMCIENV->asConstantPool(base_object);
 402       } else if (JVMCIENV->isa_HotSpotResolvedObjectTypeImpl(base_object)) {
 403         base_address = (intptr_t) JVMCIENV->asKlass(base_object);
 404       } else if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
 405         Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
 406         if (base_oop->is_a(vmClasses::Class_klass())) {
 407           base_address = cast_from_oop<jlong>(base_oop());
 408         }
 409       }
 410       if (base_address == 0) {
 411         JVMCI_THROW_MSG_NULL(IllegalArgumentException,
 412                     err_msg("Unexpected arguments: %s " JLONG_FORMAT " %s", JVMCIENV->klass_name(base_object), offset, compressed ? "true" : "false"));
 413       }
 414     }
 415     klass = *((Klass**) (intptr_t) (base_address + offset));
 416   } else {
 417     JVMCI_THROW_MSG_NULL(IllegalArgumentException,
 418                 err_msg("Unexpected arguments: %s " JLONG_FORMAT " %s",
 419                         base_object.is_non_null() ? JVMCIENV->klass_name(base_object) : "null",
 420                         offset, compressed ? "true" : "false"));
 421   }
 422   assert (klass == NULL || klass->is_klass(), "invalid read");
 423   JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
 424   return JVMCIENV->get_jobject(result);
 425 }
 426 
 427 C2V_VMENTRY_NULL(jobject, findUniqueConcreteMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
 428   methodHandle method (THREAD, UNPACK_PAIR(Method, method));
 429   InstanceKlass* holder = InstanceKlass::cast(UNPACK_PAIR(Klass, klass));
 430   if (holder->is_interface()) {
 431     JVMCI_THROW_MSG_NULL(InternalError, err_msg("Interface %s should be handled in Java code", holder->external_name()));
 432   }
 433   if (method->can_be_statically_bound()) {
 434     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()));
 435   }
 436 
 437   methodHandle ucm;
 438   {
 439     MutexLocker locker(Compile_lock);
 440     ucm = methodHandle(THREAD, Dependencies::find_unique_concrete_method(holder, method()));
 441   }
 442   JVMCIObject result = JVMCIENV->get_jvmci_method(ucm, JVMCI_CHECK_NULL);
 443   return JVMCIENV->get_jobject(result);
 444 C2V_END
 445 
 446 C2V_VMENTRY_NULL(jobject, getImplementor, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
 447   Klass* klass = UNPACK_PAIR(Klass, klass);
 448   if (!klass->is_interface()) {
 449     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
 450         err_msg("Expected interface type, got %s", klass->external_name()));
 451   }
 452   InstanceKlass* iklass = InstanceKlass::cast(klass);
 453   JVMCIKlassHandle handle(THREAD);
 454   {
 455     // Need Compile_lock around implementor()
 456     MutexLocker locker(Compile_lock);
 457     handle = iklass->implementor();
 458   }
 459   JVMCIObject implementor = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
 460   return JVMCIENV->get_jobject(implementor);
 461 C2V_END
 462 
 463 C2V_VMENTRY_0(jboolean, methodIsIgnoredBySecurityStackWalk,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 464   Method* method = UNPACK_PAIR(Method, method);
 465   return method->is_ignored_by_security_stack_walk();
 466 C2V_END
 467 
 468 C2V_VMENTRY_0(jboolean, isCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 469   Method* method = UNPACK_PAIR(Method, method);
 470   // Skip redefined methods
 471   if (method->is_old()) {
 472     return false;
 473   }
 474   return !method->is_not_compilable(CompLevel_full_optimization);
 475 C2V_END
 476 
 477 C2V_VMENTRY_0(jboolean, hasNeverInlineDirective,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 478   methodHandle method (THREAD, UNPACK_PAIR(Method, method));
 479   return !Inline || CompilerOracle::should_not_inline(method) || method->dont_inline();
 480 C2V_END
 481 
 482 C2V_VMENTRY_0(jboolean, shouldInlineMethod,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 483   methodHandle method (THREAD, UNPACK_PAIR(Method, method));
 484   return CompilerOracle::should_inline(method) || method->force_inline();
 485 C2V_END
 486 
 487 C2V_VMENTRY_NULL(jobject, lookupType, (JNIEnv* env, jobject, jstring jname, ARGUMENT_PAIR(accessing_klass), jboolean resolve))
 488   JVMCIObject name = JVMCIENV->wrap(jname);
 489   const char* str = JVMCIENV->as_utf8_string(name);
 490   TempNewSymbol class_name = SymbolTable::new_symbol(str);
 491 
 492   if (class_name->utf8_length() <= 1) {
 493     JVMCI_THROW_MSG_0(InternalError, err_msg("Primitive type %s should be handled in Java code", class_name->as_C_string()));
 494   }
 495 
 496   JVMCIKlassHandle resolved_klass(THREAD);
 497   Klass* accessing_klass = UNPACK_PAIR(Klass, accessing_klass);
 498   Handle class_loader;
 499   Handle protection_domain;
 500   if (accessing_klass != nullptr) {
 501     class_loader = Handle(THREAD, accessing_klass->class_loader());
 502     protection_domain = Handle(THREAD, accessing_klass->protection_domain());
 503   } else {
 504     // Use the System class loader
 505     class_loader = Handle(THREAD, SystemDictionary::java_system_loader());
 506     JVMCIENV->runtime()->initialize(JVMCIENV);
 507   }
 508 
 509   if (resolve) {
 510     resolved_klass = SystemDictionary::resolve_or_null(class_name, class_loader, protection_domain, CHECK_NULL);
 511     if (resolved_klass == nullptr) {
 512       JVMCI_THROW_MSG_NULL(ClassNotFoundException, str);
 513     }
 514   } else {
 515     if (Signature::has_envelope(class_name)) {
 516       // This is a name from a signature.  Strip off the trimmings.
 517       // Call recursive to keep scope of strippedsym.
 518       TempNewSymbol strippedsym = Signature::strip_envelope(class_name);
 519       resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
 520                                                              class_loader,
 521                                                              protection_domain);
 522     } else if (Signature::is_array(class_name)) {
 523       SignatureStream ss(class_name, false);
 524       int ndim = ss.skip_array_prefix();
 525       if (ss.type() == T_OBJECT) {
 526         Symbol* strippedsym = ss.as_symbol();
 527         resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
 528                                                                class_loader,
 529                                                                protection_domain);
 530         if (!resolved_klass.is_null()) {
 531           resolved_klass = resolved_klass->array_klass(ndim, CHECK_NULL);
 532         }
 533       } else {
 534         resolved_klass = TypeArrayKlass::cast(Universe::typeArrayKlassObj(ss.type()))->array_klass(ndim, CHECK_NULL);
 535       }
 536     } else {
 537       resolved_klass = SystemDictionary::find_instance_klass(THREAD, class_name,
 538                                                              class_loader,
 539                                                              protection_domain);
 540     }
 541   }
 542   JVMCIObject result = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
 543   return JVMCIENV->get_jobject(result);
 544 C2V_END
 545 
 546 C2V_VMENTRY_NULL(jobject, getArrayType, (JNIEnv* env, jobject, jchar type_char, ARGUMENT_PAIR(klass)))
 547   JVMCIKlassHandle array_klass(THREAD);
 548   Klass* klass = UNPACK_PAIR(Klass, klass);
 549   if (klass == nullptr) {
 550     BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
 551     if (type == T_VOID) {
 552       return nullptr;
 553     }
 554     array_klass = Universe::typeArrayKlassObj(type);
 555     if (array_klass == nullptr) {
 556       JVMCI_THROW_MSG_NULL(InternalError, err_msg("No array klass for primitive type %s", type2name(type)));
 557     }
 558   } else {
 559     array_klass = klass->array_klass(CHECK_NULL);
 560   }
 561   JVMCIObject result = JVMCIENV->get_jvmci_type(array_klass, JVMCI_CHECK_NULL);
 562   return JVMCIENV->get_jobject(result);
 563 C2V_END
 564 
 565 C2V_VMENTRY_NULL(jobject, lookupClass, (JNIEnv* env, jobject, jclass mirror))
 566   requireInHotSpot("lookupClass", JVMCI_CHECK_NULL);
 567   if (mirror == nullptr) {
 568     return nullptr;
 569   }
 570   JVMCIKlassHandle klass(THREAD);
 571   klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
 572   if (klass == nullptr) {
 573     JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Primitive classes are unsupported");
 574   }
 575   JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
 576   return JVMCIENV->get_jobject(result);
 577 C2V_END
 578 
 579 C2V_VMENTRY_NULL(jobject, getUncachedStringInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 580   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 581   constantTag tag = cp->tag_at(index);
 582   if (!tag.is_string()) {
 583     JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
 584   }
 585   oop obj = cp->uncached_string_at(index, CHECK_NULL);
 586   return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
 587 C2V_END
 588 
 589 C2V_VMENTRY_NULL(jobject, resolvePossiblyCachedConstantInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 590   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 591   oop obj = cp->resolve_possibly_cached_constant_at(index, CHECK_NULL);
 592   constantTag tag = cp->tag_at(index);
 593   if (tag.is_dynamic_constant() || tag.is_dynamic_constant_in_error()) {
 594     if (obj == Universe::the_null_sentinel()) {
 595       return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
 596     }
 597     BasicType bt = Signature::basic_type(cp->uncached_signature_ref_at(index));
 598     if (!is_reference_type(bt)) {
 599       if (!is_java_primitive(bt)) {
 600         return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
 601       }
 602 
 603       // Convert standard box (e.g. java.lang.Integer) to JVMCI box (e.g. jdk.vm.ci.meta.PrimitiveConstant)
 604       jvalue value;
 605       jlong raw_value;
 606       jchar type_char;
 607       BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
 608       assert(bt2 == bt, "");
 609       switch (bt2) {
 610         case T_LONG:    type_char = 'J'; raw_value = value.j; break;
 611         case T_DOUBLE:  type_char = 'D'; raw_value = value.j; break;
 612         case T_FLOAT:   type_char = 'F'; raw_value = value.i; break;
 613         case T_INT:     type_char = 'I'; raw_value = value.i; break;
 614         case T_SHORT:   type_char = 'S'; raw_value = value.s; break;
 615         case T_BYTE:    type_char = 'B'; raw_value = value.b; break;
 616         case T_CHAR:    type_char = 'C'; raw_value = value.c; break;
 617         case T_BOOLEAN: type_char = 'Z'; raw_value = value.z; break;
 618         default:        return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
 619       }
 620 
 621       JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, raw_value, JVMCI_CHECK_NULL);
 622       return JVMCIENV->get_jobject(result);
 623     }
 624   }
 625   return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
 626 C2V_END
 627 
 628 C2V_VMENTRY_NULL(jobjectArray, resolveBootstrapMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 629   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 630   constantTag tag = cp->tag_at(index);
 631   bool is_indy = tag.is_invoke_dynamic();
 632   bool is_condy = tag.is_dynamic_constant();
 633   if (!(is_condy || is_indy)) {
 634     JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
 635   }
 636   // Resolve the bootstrap specifier, its name, type, and static arguments
 637   BootstrapInfo bootstrap_specifier(cp, index);
 638   Handle bsm = bootstrap_specifier.resolve_bsm(CHECK_NULL);
 639 
 640   // call java.lang.invoke.MethodHandle::asFixedArity() -> MethodHandle
 641   // to get a DirectMethodHandle from which we can then extract a Method*
 642   JavaValue result(T_OBJECT);
 643   JavaCalls::call_virtual(&result,
 644                          bsm,
 645                          vmClasses::MethodHandle_klass(),
 646                          vmSymbols::asFixedArity_name(),
 647                          vmSymbols::asFixedArity_signature(),
 648                          CHECK_NULL);
 649   bsm = Handle(THREAD, result.get_oop());
 650 
 651   // Check assumption about getting a DirectMethodHandle
 652   if (!java_lang_invoke_DirectMethodHandle::is_instance(bsm())) {
 653     JVMCI_THROW_MSG_NULL(InternalError, err_msg("Unexpected MethodHandle subclass: %s", bsm->klass()->external_name()));
 654   }
 655   // Create return array describing the bootstrap method invocation (BSMI)
 656   JVMCIObjectArray bsmi = JVMCIENV->new_Object_array(4, JVMCI_CHECK_NULL);
 657 
 658   // Extract Method* and wrap it in a ResolvedJavaMethod
 659   Handle member = Handle(THREAD, java_lang_invoke_DirectMethodHandle::member(bsm()));
 660   JVMCIObject bsmi_method = JVMCIENV->get_jvmci_method(methodHandle(THREAD, java_lang_invoke_MemberName::vmtarget(member())), JVMCI_CHECK_NULL);
 661   JVMCIENV->put_object_at(bsmi, 0, bsmi_method);
 662 
 663   JVMCIObject bsmi_name = JVMCIENV->create_string(bootstrap_specifier.name(), JVMCI_CHECK_NULL);
 664   JVMCIENV->put_object_at(bsmi, 1, bsmi_name);
 665 
 666   Handle type_arg = bootstrap_specifier.type_arg();
 667   JVMCIObject bsmi_type = JVMCIENV->get_object_constant(type_arg());
 668   JVMCIENV->put_object_at(bsmi, 2, bsmi_type);
 669 
 670   Handle arg_values = bootstrap_specifier.arg_values();
 671   if (arg_values.not_null()) {
 672     if (!arg_values->is_array()) {
 673       JVMCIENV->put_object_at(bsmi, 3, JVMCIENV->get_object_constant(arg_values()));
 674     } else if (arg_values->is_objArray()) {
 675       objArrayHandle args_array = objArrayHandle(THREAD, (objArrayOop) arg_values());
 676       int len = args_array->length();
 677       JVMCIObjectArray arguments = JVMCIENV->new_JavaConstant_array(len, JVMCI_CHECK_NULL);
 678       JVMCIENV->put_object_at(bsmi, 3, arguments);
 679       for (int i = 0; i < len; i++) {
 680         oop x = args_array->obj_at(i);
 681         if (x != nullptr) {
 682           JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_object_constant(x));
 683         } else {
 684           JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_JavaConstant_NULL_POINTER());
 685         }
 686       }
 687     } else if (arg_values->is_typeArray()) {
 688       typeArrayHandle bsci = typeArrayHandle(THREAD, (typeArrayOop) arg_values());
 689       JVMCIPrimitiveArray arguments = JVMCIENV->new_intArray(bsci->length(), JVMCI_CHECK_NULL);
 690       JVMCIENV->put_object_at(bsmi, 3, arguments);
 691       for (int i = 0; i < bsci->length(); i++) {
 692         JVMCIENV->put_int_at(arguments, i, bsci->int_at(i));
 693       }
 694     }
 695   }
 696   return JVMCIENV->get_jobjectArray(bsmi);
 697 C2V_END
 698 
 699 C2V_VMENTRY_0(jint, lookupNameAndTypeRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 700   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 701   return cp->name_and_type_ref_index_at(index);
 702 C2V_END
 703 
 704 C2V_VMENTRY_NULL(jobject, lookupNameInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which))
 705   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 706   JVMCIObject sym = JVMCIENV->create_string(cp->name_ref_at(which), JVMCI_CHECK_NULL);
 707   return JVMCIENV->get_jobject(sym);
 708 C2V_END
 709 
 710 C2V_VMENTRY_NULL(jobject, lookupSignatureInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which))
 711   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 712   JVMCIObject sym = JVMCIENV->create_string(cp->signature_ref_at(which), JVMCI_CHECK_NULL);
 713   return JVMCIENV->get_jobject(sym);
 714 C2V_END
 715 
 716 C2V_VMENTRY_0(jint, lookupKlassRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 717   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 718   return cp->klass_ref_index_at(index);
 719 C2V_END
 720 
 721 C2V_VMENTRY_NULL(jobject, resolveTypeInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 722   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 723   Klass* klass = cp->klass_at(index, CHECK_NULL);
 724   JVMCIKlassHandle resolved_klass(THREAD, klass);
 725   if (resolved_klass->is_instance_klass()) {
 726     InstanceKlass::cast(resolved_klass())->link_class(CHECK_NULL);
 727     if (!InstanceKlass::cast(resolved_klass())->is_linked()) {
 728       // link_class() should not return here if there is an issue.
 729       JVMCI_THROW_MSG_NULL(InternalError, err_msg("Class %s must be linked", resolved_klass()->external_name()));
 730     }
 731   }
 732   JVMCIObject klassObject = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
 733   return JVMCIENV->get_jobject(klassObject);
 734 C2V_END
 735 
 736 C2V_VMENTRY_NULL(jobject, lookupKlassInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 737   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 738   Klass* loading_klass = cp->pool_holder();
 739   bool is_accessible = false;
 740   JVMCIKlassHandle klass(THREAD, JVMCIRuntime::get_klass_by_index(cp, index, is_accessible, loading_klass));
 741   Symbol* symbol = nullptr;
 742   if (klass.is_null()) {
 743     constantTag tag = cp->tag_at(index);
 744     if (tag.is_klass()) {
 745       // The klass has been inserted into the constant pool
 746       // very recently.
 747       klass = cp->resolved_klass_at(index);
 748     } else if (tag.is_symbol()) {
 749       symbol = cp->symbol_at(index);
 750     } else {
 751       assert(cp->tag_at(index).is_unresolved_klass(), "wrong tag");
 752       symbol = cp->klass_name_at(index);
 753     }
 754   }
 755   JVMCIObject result;
 756   if (!klass.is_null()) {
 757     result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
 758   } else {
 759     result = JVMCIENV->create_string(symbol, JVMCI_CHECK_NULL);
 760   }
 761   return JVMCIENV->get_jobject(result);
 762 C2V_END
 763 
 764 C2V_VMENTRY_NULL(jobject, lookupAppendixInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 765   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 766   oop appendix_oop = ConstantPool::appendix_at_if_loaded(cp, index);
 767   return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(appendix_oop));
 768 C2V_END
 769 
 770 C2V_VMENTRY_NULL(jobject, lookupMethodInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jbyte opcode, ARGUMENT_PAIR(caller)))
 771   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 772   methodHandle caller(THREAD, UNPACK_PAIR(Method, caller));
 773   InstanceKlass* pool_holder = cp->pool_holder();
 774   Bytecodes::Code bc = (Bytecodes::Code) (((int) opcode) & 0xFF);
 775   methodHandle method(THREAD, JVMCIRuntime::get_method_by_index(cp, index, bc, pool_holder));
 776   JFR_ONLY(if (method.not_null()) Jfr::on_resolution(caller(), method(), CHECK_NULL);)
 777   JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
 778   return JVMCIENV->get_jobject(result);
 779 C2V_END
 780 
 781 C2V_VMENTRY_0(jint, constantPoolRemapInstructionOperandFromCache, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
 782   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 783   return cp->remap_instruction_operand_from_cache(index);
 784 C2V_END
 785 
 786 C2V_VMENTRY_NULL(jobject, resolveFieldInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, ARGUMENT_PAIR(method), jbyte opcode, jintArray info_handle))
 787   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
 788   Bytecodes::Code code = (Bytecodes::Code)(((int) opcode) & 0xFF);
 789   fieldDescriptor fd;
 790   methodHandle mh(THREAD, UNPACK_PAIR(Method, method));
 791   LinkInfo link_info(cp, index, mh, CHECK_NULL);
 792   LinkResolver::resolve_field(fd, link_info, Bytecodes::java_code(code), false, CHECK_NULL);
 793   JVMCIPrimitiveArray info = JVMCIENV->wrap(info_handle);
 794   if (info.is_null() || JVMCIENV->get_length(info) != 3) {
 795     JVMCI_ERROR_NULL("info must not be null and have a length of 3");
 796   }
 797   JVMCIENV->put_int_at(info, 0, fd.access_flags().as_int());
 798   JVMCIENV->put_int_at(info, 1, fd.offset());
 799   JVMCIENV->put_int_at(info, 2, fd.index());
 800   JVMCIKlassHandle handle(THREAD, fd.field_holder());
 801   JVMCIObject field_holder = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
 802   return JVMCIENV->get_jobject(field_holder);
 803 C2V_END
 804 
 805 C2V_VMENTRY_0(jint, getVtableIndexForInterfaceMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
 806   Klass* klass = UNPACK_PAIR(Klass, klass);
 807   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
 808   InstanceKlass* holder = method->method_holder();
 809   if (klass->is_interface()) {
 810     JVMCI_THROW_MSG_0(InternalError, err_msg("Interface %s should be handled in Java code", klass->external_name()));
 811   }
 812   if (!holder->is_interface()) {
 813     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()));
 814   }
 815   if (!klass->is_instance_klass()) {
 816     JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be instance klass", klass->external_name()));
 817   }
 818   if (!InstanceKlass::cast(klass)->is_linked()) {
 819     JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be linked", klass->external_name()));
 820   }
 821   if (!klass->is_subtype_of(holder)) {
 822     JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s does not implement interface %s", klass->external_name(), holder->external_name()));
 823   }
 824   return LinkResolver::vtable_index_of_interface_method(klass, method);
 825 C2V_END
 826 
 827 C2V_VMENTRY_NULL(jobject, resolveMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(receiver), ARGUMENT_PAIR(method), ARGUMENT_PAIR(caller)))
 828   Klass* recv_klass = UNPACK_PAIR(Klass, receiver);
 829   Klass* caller_klass = UNPACK_PAIR(Klass, caller);
 830   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
 831 
 832   Klass* resolved     = method->method_holder();
 833   Symbol* h_name      = method->name();
 834   Symbol* h_signature = method->signature();
 835 
 836   if (MethodHandles::is_signature_polymorphic_method(method())) {
 837       // Signature polymorphic methods are already resolved, JVMCI just returns NULL in this case.
 838       return nullptr;
 839   }
 840 
 841   if (method->name() == vmSymbols::clone_name() &&
 842       resolved == vmClasses::Object_klass() &&
 843       recv_klass->is_array_klass()) {
 844     // Resolution of the clone method on arrays always returns Object.clone even though that method
 845     // has protected access.  There's some trickery in the access checking to make this all work out
 846     // so it's necessary to pass in the array class as the resolved class to properly trigger this.
 847     // Otherwise it's impossible to resolve the array clone methods through JVMCI.  See
 848     // LinkResolver::check_method_accessability for the matching logic.
 849     resolved = recv_klass;
 850   }
 851 
 852   LinkInfo link_info(resolved, h_name, h_signature, caller_klass);
 853   Method* m = nullptr;
 854   // Only do exact lookup if receiver klass has been linked.  Otherwise,
 855   // the vtable has not been setup, and the LinkResolver will fail.
 856   if (recv_klass->is_array_klass() ||
 857       (InstanceKlass::cast(recv_klass)->is_linked() && !recv_klass->is_interface())) {
 858     if (resolved->is_interface()) {
 859       m = LinkResolver::resolve_interface_call_or_null(recv_klass, link_info);
 860     } else {
 861       m = LinkResolver::resolve_virtual_call_or_null(recv_klass, link_info);
 862     }
 863   }
 864 
 865   if (m == nullptr) {
 866     // Return NULL if there was a problem with lookup (uninitialized class, etc.)
 867     return nullptr;
 868   }
 869 
 870   JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, m), JVMCI_CHECK_NULL);
 871   return JVMCIENV->get_jobject(result);
 872 C2V_END
 873 
 874 C2V_VMENTRY_0(jboolean, hasFinalizableSubclass,(JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
 875   Klass* klass = UNPACK_PAIR(Klass, klass);
 876   assert(klass != nullptr, "method must not be called for primitive types");
 877   if (!klass->is_instance_klass()) {
 878     return false;
 879   }
 880   InstanceKlass* iklass = InstanceKlass::cast(klass);
 881   return Dependencies::find_finalizable_subclass(iklass) != nullptr;
 882 C2V_END
 883 
 884 C2V_VMENTRY_NULL(jobject, getClassInitializer, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
 885   Klass* klass = UNPACK_PAIR(Klass, klass);
 886   if (!klass->is_instance_klass()) {
 887     return nullptr;
 888   }
 889   InstanceKlass* iklass = InstanceKlass::cast(klass);
 890   methodHandle clinit(THREAD, iklass->class_initializer());
 891   JVMCIObject result = JVMCIENV->get_jvmci_method(clinit, JVMCI_CHECK_NULL);
 892   return JVMCIENV->get_jobject(result);
 893 C2V_END
 894 
 895 C2V_VMENTRY_0(jlong, getMaxCallTargetOffset, (JNIEnv* env, jobject, jlong addr))
 896   address target_addr = (address) addr;
 897   if (target_addr != 0x0) {
 898     int64_t off_low = (int64_t)target_addr - ((int64_t)CodeCache::low_bound() + sizeof(int));
 899     int64_t off_high = (int64_t)target_addr - ((int64_t)CodeCache::high_bound() + sizeof(int));
 900     return MAX2(ABS(off_low), ABS(off_high));
 901   }
 902   return -1;
 903 C2V_END
 904 
 905 C2V_VMENTRY(void, setNotInlinableOrCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
 906   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
 907   method->set_not_c1_compilable();
 908   method->set_not_c2_compilable();
 909   method->set_dont_inline(true);
 910 C2V_END
 911 
 912 C2V_VMENTRY_0(jint, getInstallCodeFlags, (JNIEnv *env, jobject))
 913   int flags = 0;
 914 #ifndef PRODUCT
 915   flags |= 0x0001; // VM will install block comments
 916   flags |= 0x0004; // Enable HotSpotJVMCIRuntime.Option.CodeSerializationTypeInfo if not explicitly set
 917 #endif
 918   if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
 919     // VM needs to track method dependencies
 920     flags |= 0x0002;
 921   }
 922   return flags;
 923 C2V_END
 924 
 925 C2V_VMENTRY_0(jint, installCode0, (JNIEnv *env, jobject,
 926     jlong compiled_code_buffer,
 927     jlong serialization_ns,
 928     bool with_type_info,
 929     jobject compiled_code,
 930     jobjectArray object_pool,
 931     jobject installed_code,
 932     jlong failed_speculations_address,
 933     jbyteArray speculations_obj))
 934   HandleMark hm(THREAD);
 935   JNIHandleMark jni_hm(thread);
 936 
 937   JVMCIObject compiled_code_handle = JVMCIENV->wrap(compiled_code);
 938   objArrayHandle object_pool_handle(thread, JVMCIENV->is_hotspot() ? (objArrayOop) JNIHandles::resolve(object_pool) : nullptr);
 939 
 940   CodeBlob* cb = NULL;
 941   JVMCIObject installed_code_handle = JVMCIENV->wrap(installed_code);
 942   JVMCIPrimitiveArray speculations_handle = JVMCIENV->wrap(speculations_obj);
 943 
 944   int speculations_len = JVMCIENV->get_length(speculations_handle);
 945   char* speculations = NEW_RESOURCE_ARRAY(char, speculations_len);
 946   JVMCIENV->copy_bytes_to(speculations_handle, (jbyte*) speculations, 0, speculations_len);
 947 
 948   JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK_JNI_ERR);
 949   JVMCICompiler::CodeInstallStats* stats = compiler->code_install_stats(!thread->is_Compiler_thread());
 950   elapsedTimer *timer = stats->timer();
 951   timer->add_nanoseconds(serialization_ns);
 952   TraceTime install_time("installCode", timer);
 953 
 954   CodeInstaller installer(JVMCIENV);
 955 
 956   JVMCI::CodeInstallResult result = installer.install(compiler,
 957       compiled_code_buffer,
 958       with_type_info,
 959       compiled_code_handle,
 960       object_pool_handle,
 961       cb,
 962       installed_code_handle,
 963       (FailedSpeculation**)(address) failed_speculations_address,
 964       speculations,
 965       speculations_len,
 966       JVMCI_CHECK_0);
 967 
 968   if (PrintCodeCacheOnCompilation) {
 969     stringStream s;
 970     // Dump code cache into a buffer before locking the tty,
 971     {
 972       MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
 973       CodeCache::print_summary(&s, false);
 974     }
 975     ttyLocker ttyl;
 976     tty->print_raw_cr(s.freeze());
 977   }
 978 
 979   if (result != JVMCI::ok) {
 980     assert(cb == NULL, "should be");
 981   } else {
 982     stats->on_install(cb);
 983     if (installed_code_handle.is_non_null()) {
 984       if (cb->is_nmethod()) {
 985         assert(JVMCIENV->isa_HotSpotNmethod(installed_code_handle), "wrong type");
 986         // Clear the link to an old nmethod first
 987         JVMCIObject nmethod_mirror = installed_code_handle;
 988         JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, true, JVMCI_CHECK_0);
 989       } else {
 990         assert(JVMCIENV->isa_InstalledCode(installed_code_handle), "wrong type");
 991       }
 992       // Initialize the link to the new code blob
 993       JVMCIENV->initialize_installed_code(installed_code_handle, cb, JVMCI_CHECK_0);
 994     }
 995   }
 996   return result;
 997 C2V_END
 998 
 999 C2V_VMENTRY(void, resetCompilationStatistics, (JNIEnv* env, jobject))
1000   JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK);
1001   CompilerStatistics* stats = compiler->stats();
1002   stats->_standard.reset();
1003   stats->_osr.reset();
1004 C2V_END
1005 
1006 C2V_VMENTRY_NULL(jobject, disassembleCodeBlob, (JNIEnv* env, jobject, jobject installedCode))
1007   HandleMark hm(THREAD);
1008 
1009   if (installedCode == NULL) {
1010     JVMCI_THROW_MSG_NULL(NullPointerException, "installedCode is null");
1011   }
1012 
1013   JVMCIObject installedCodeObject = JVMCIENV->wrap(installedCode);
1014   CodeBlob* cb = JVMCIENV->get_code_blob(installedCodeObject);
1015   if (cb == NULL) {
1016     return NULL;
1017   }
1018 
1019   // We don't want the stringStream buffer to resize during disassembly as it
1020   // uses scoped resource memory. If a nested function called during disassembly uses
1021   // a ResourceMark and the buffer expands within the scope of the mark,
1022   // the buffer becomes garbage when that scope is exited. Experience shows that
1023   // the disassembled code is typically about 10x the code size so a fixed buffer
1024   // sized to 20x code size plus a fixed amount for header info should be sufficient.
1025   int bufferSize = cb->code_size() * 20 + 1024;
1026   char* buffer = NEW_RESOURCE_ARRAY(char, bufferSize);
1027   stringStream st(buffer, bufferSize);
1028   Disassembler::decode(cb, &st);
1029   if (st.size() <= 0) {
1030     return NULL;
1031   }
1032 
1033   JVMCIObject result = JVMCIENV->create_string(st.as_string(), JVMCI_CHECK_NULL);
1034   return JVMCIENV->get_jobject(result);
1035 C2V_END
1036 
1037 C2V_VMENTRY_NULL(jobject, getStackTraceElement, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int bci))
1038   HandleMark hm(THREAD);
1039 
1040   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1041   JVMCIObject element = JVMCIENV->new_StackTraceElement(method, bci, JVMCI_CHECK_NULL);
1042   return JVMCIENV->get_jobject(element);
1043 C2V_END
1044 
1045 C2V_VMENTRY_NULL(jobject, executeHotSpotNmethod, (JNIEnv* env, jobject, jobject args, jobject hs_nmethod))
1046   // The incoming arguments array would have to contain JavaConstants instead of regular objects
1047   // and the return value would have to be wrapped as a JavaConstant.
1048   requireInHotSpot("executeHotSpotNmethod", JVMCI_CHECK_NULL);
1049 
1050   HandleMark hm(THREAD);
1051 
1052   JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod);
1053   nmethod* nm = JVMCIENV->get_nmethod(nmethod_mirror);
1054   if (nm == NULL || !nm->is_in_use()) {
1055     JVMCI_THROW_NULL(InvalidInstalledCodeException);
1056   }
1057   methodHandle mh(THREAD, nm->method());
1058   Symbol* signature = mh->signature();
1059   JavaCallArguments jca(mh->size_of_parameters());
1060 
1061   JavaArgumentUnboxer jap(signature, &jca, (arrayOop) JNIHandles::resolve(args), mh->is_static());
1062   JavaValue result(jap.return_type());
1063   jca.set_alternative_target(Handle(THREAD, JNIHandles::resolve(nmethod_mirror.as_jobject())));
1064   JavaCalls::call(&result, mh, &jca, CHECK_NULL);
1065 
1066   if (jap.return_type() == T_VOID) {
1067     return NULL;
1068   } else if (is_reference_type(jap.return_type())) {
1069     return JNIHandles::make_local(THREAD, result.get_oop());
1070   } else {
1071     jvalue *value = (jvalue *) result.get_value_addr();
1072     // Narrow the value down if required (Important on big endian machines)
1073     switch (jap.return_type()) {
1074       case T_BOOLEAN:
1075        value->z = (jboolean) value->i;
1076        break;
1077       case T_BYTE:
1078        value->b = (jbyte) value->i;
1079        break;
1080       case T_CHAR:
1081        value->c = (jchar) value->i;
1082        break;
1083       case T_SHORT:
1084        value->s = (jshort) value->i;
1085        break;
1086       default:
1087         break;
1088     }
1089     JVMCIObject o = JVMCIENV->create_box(jap.return_type(), value, JVMCI_CHECK_NULL);
1090     return JVMCIENV->get_jobject(o);
1091   }
1092 C2V_END
1093 
1094 C2V_VMENTRY_NULL(jlongArray, getLineNumberTable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1095   Method* method = UNPACK_PAIR(Method, method);
1096   if (!method->has_linenumber_table()) {
1097     return NULL;
1098   }
1099   u2 num_entries = 0;
1100   CompressedLineNumberReadStream streamForSize(method->compressed_linenumber_table());
1101   while (streamForSize.read_pair()) {
1102     num_entries++;
1103   }
1104 
1105   CompressedLineNumberReadStream stream(method->compressed_linenumber_table());
1106   JVMCIPrimitiveArray result = JVMCIENV->new_longArray(2 * num_entries, JVMCI_CHECK_NULL);
1107 
1108   int i = 0;
1109   jlong value;
1110   while (stream.read_pair()) {
1111     value = ((jlong) stream.bci());
1112     JVMCIENV->put_long_at(result, i, value);
1113     value = ((jlong) stream.line());
1114     JVMCIENV->put_long_at(result, i + 1, value);
1115     i += 2;
1116   }
1117 
1118   return (jlongArray) JVMCIENV->get_jobject(result);
1119 C2V_END
1120 
1121 C2V_VMENTRY_0(jlong, getLocalVariableTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1122   Method* method = UNPACK_PAIR(Method, method);
1123   if (!method->has_localvariable_table()) {
1124     return 0;
1125   }
1126   return (jlong) (address) method->localvariable_table_start();
1127 C2V_END
1128 
1129 C2V_VMENTRY_0(jint, getLocalVariableTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1130   Method* method = UNPACK_PAIR(Method, method);
1131   return method->localvariable_table_length();
1132 C2V_END
1133 
1134 C2V_VMENTRY(void, reprofile, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1135   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1136   MethodCounters* mcs = method->method_counters();
1137   if (mcs != NULL) {
1138     mcs->clear_counters();
1139   }
1140   NOT_PRODUCT(method->set_compiled_invocation_count(0));
1141 
1142   CompiledMethod* code = method->code();
1143   if (code != NULL) {
1144     code->make_not_entrant();
1145   }
1146 
1147   MethodData* method_data = method->method_data();
1148   if (method_data == NULL) {
1149     ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
1150     method_data = MethodData::allocate(loader_data, method, CHECK);
1151     method->set_method_data(method_data);
1152   } else {
1153     method_data->initialize();
1154   }
1155 C2V_END
1156 
1157 
1158 C2V_VMENTRY(void, invalidateHotSpotNmethod, (JNIEnv* env, jobject, jobject hs_nmethod, jboolean deoptimize))
1159   JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod);
1160   JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, deoptimize, JVMCI_CHECK);
1161 C2V_END
1162 
1163 C2V_VMENTRY_NULL(jlongArray, collectCounters, (JNIEnv* env, jobject))
1164   // Returns a zero length array if counters aren't enabled
1165   JVMCIPrimitiveArray array = JVMCIENV->new_longArray(JVMCICounterSize, JVMCI_CHECK_NULL);
1166   if (JVMCICounterSize > 0) {
1167     jlong* temp_array = NEW_RESOURCE_ARRAY(jlong, JVMCICounterSize);
1168     JavaThread::collect_counters(temp_array, JVMCICounterSize);
1169     JVMCIENV->copy_longs_from(temp_array, array, 0, JVMCICounterSize);
1170   }
1171   return (jlongArray) JVMCIENV->get_jobject(array);
1172 C2V_END
1173 
1174 C2V_VMENTRY_0(jint, getCountersSize, (JNIEnv* env, jobject))
1175   return (jint) JVMCICounterSize;
1176 C2V_END
1177 
1178 C2V_VMENTRY_0(jboolean, setCountersSize, (JNIEnv* env, jobject, jint new_size))
1179   return JavaThread::resize_all_jvmci_counters(new_size);
1180 C2V_END
1181 
1182 C2V_VMENTRY_0(jint, allocateCompileId, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci))
1183   HandleMark hm(THREAD);
1184   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1185   if (method.is_null()) {
1186     JVMCI_THROW_0(NullPointerException);
1187   }
1188   if (entry_bci >= method->code_size() || entry_bci < -1) {
1189     JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Unexpected bci %d", entry_bci));
1190   }
1191   return CompileBroker::assign_compile_id_unlocked(THREAD, method, entry_bci);
1192 C2V_END
1193 
1194 
1195 C2V_VMENTRY_0(jboolean, isMature, (JNIEnv* env, jobject, jlong method_data_pointer))
1196   MethodData* mdo = (MethodData*) method_data_pointer;
1197   return mdo != NULL && mdo->is_mature();
1198 C2V_END
1199 
1200 C2V_VMENTRY_0(jboolean, hasCompiledCodeForOSR, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci, int comp_level))
1201   Method* method = UNPACK_PAIR(Method, method);
1202   return method->lookup_osr_nmethod_for(entry_bci, comp_level, true) != NULL;
1203 C2V_END
1204 
1205 C2V_VMENTRY_NULL(jobject, getSymbol, (JNIEnv* env, jobject, jlong symbol))
1206   JVMCIObject sym = JVMCIENV->create_string((Symbol*)(address)symbol, JVMCI_CHECK_NULL);
1207   return JVMCIENV->get_jobject(sym);
1208 C2V_END
1209 
1210 C2V_VMENTRY_NULL(jobject, getSignatureName, (JNIEnv* env, jobject, jlong klass_pointer))
1211   Klass* klass = UNPACK_PAIR(Klass, klass);
1212   JVMCIObject signature = JVMCIENV->create_string(klass->signature_name(), JVMCI_CHECK_NULL);
1213   return JVMCIENV->get_jobject(signature);
1214 C2V_END
1215 
1216 /*
1217  * Used by matches() to convert a ResolvedJavaMethod[] to an array of Method*.
1218  */
1219 GrowableArray<Method*>* init_resolved_methods(jobjectArray methods, JVMCIEnv* JVMCIENV) {
1220   objArrayOop methods_oop = (objArrayOop) JNIHandles::resolve(methods);
1221   GrowableArray<Method*>* resolved_methods = new GrowableArray<Method*>(methods_oop->length());
1222   for (int i = 0; i < methods_oop->length(); i++) {
1223     oop resolved = methods_oop->obj_at(i);
1224     Method* resolved_method = NULL;
1225     if (resolved->klass() == HotSpotJVMCI::HotSpotResolvedJavaMethodImpl::klass()) {
1226       resolved_method = HotSpotJVMCI::asMethod(JVMCIENV, resolved);
1227     }
1228     resolved_methods->append(resolved_method);
1229   }
1230   return resolved_methods;
1231 }
1232 
1233 /*
1234  * Used by c2v_iterateFrames to check if `method` matches one of the ResolvedJavaMethods in the `methods` array.
1235  * The ResolvedJavaMethod[] array is converted to a Method* array that is then cached in the resolved_methods_ref in/out parameter.
1236  * In case of a match, the matching ResolvedJavaMethod is returned in matched_jvmci_method_ref.
1237  */
1238 bool matches(jobjectArray methods, Method* method, GrowableArray<Method*>** resolved_methods_ref, Handle* matched_jvmci_method_ref, Thread* THREAD, JVMCIEnv* JVMCIENV) {
1239   GrowableArray<Method*>* resolved_methods = *resolved_methods_ref;
1240   if (resolved_methods == NULL) {
1241     resolved_methods = init_resolved_methods(methods, JVMCIENV);
1242     *resolved_methods_ref = resolved_methods;
1243   }
1244   assert(method != NULL, "method should not be NULL");
1245   assert(resolved_methods->length() == ((objArrayOop) JNIHandles::resolve(methods))->length(), "arrays must have the same length");
1246   for (int i = 0; i < resolved_methods->length(); i++) {
1247     Method* m = resolved_methods->at(i);
1248     if (m == method) {
1249       *matched_jvmci_method_ref = Handle(THREAD, ((objArrayOop) JNIHandles::resolve(methods))->obj_at(i));
1250       return true;
1251     }
1252   }
1253   return false;
1254 }
1255 
1256 /*
1257  * Resolves an interface call to a concrete method handle.
1258  */
1259 methodHandle resolve_interface_call(Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
1260   CallInfo callinfo;
1261   Handle receiver = args->receiver();
1262   Klass* recvrKlass = receiver.is_null() ? (Klass*)NULL : receiver->klass();
1263   LinkInfo link_info(spec_klass, name, signature);
1264   LinkResolver::resolve_interface_call(
1265           callinfo, receiver, recvrKlass, link_info, true, CHECK_(methodHandle()));
1266   methodHandle method(THREAD, callinfo.selected_method());
1267   assert(method.not_null(), "should have thrown exception");
1268   return method;
1269 }
1270 
1271 /*
1272  * Used by c2v_iterateFrames to make a new vframeStream at the given compiled frame id (stack pointer) and vframe id.
1273  */
1274 void resync_vframestream_to_compiled_frame(vframeStream& vfst, intptr_t* stack_pointer, int vframe_id, JavaThread* thread, TRAPS) {
1275   vfst = vframeStream(thread);
1276   while (vfst.frame_id() != stack_pointer && !vfst.at_end()) {
1277     vfst.next();
1278   }
1279   if (vfst.frame_id() != stack_pointer) {
1280     THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "stack frame not found after deopt")
1281   }
1282   if (vfst.is_interpreted_frame()) {
1283     THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "compiled stack frame expected")
1284   }
1285   while (vfst.vframe_id() != vframe_id) {
1286     if (vfst.at_end()) {
1287       THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "vframe not found after deopt")
1288     }
1289     vfst.next();
1290     assert(!vfst.is_interpreted_frame(), "Wrong frame type");
1291   }
1292 }
1293 
1294 /*
1295  * Used by c2v_iterateFrames. Returns an array of any unallocated scope objects or NULL if none.
1296  */
1297 GrowableArray<ScopeValue*>* get_unallocated_objects_or_null(GrowableArray<ScopeValue*>* scope_objects) {
1298   GrowableArray<ScopeValue*>* unallocated = NULL;
1299   for (int i = 0; i < scope_objects->length(); i++) {
1300     ObjectValue* sv = (ObjectValue*) scope_objects->at(i);
1301     if (sv->value().is_null()) {
1302       if (unallocated == NULL) {
1303         unallocated = new GrowableArray<ScopeValue*>(scope_objects->length());
1304       }
1305       unallocated->append(sv);
1306     }
1307   }
1308   return unallocated;
1309 }
1310 
1311 C2V_VMENTRY_NULL(jobject, iterateFrames, (JNIEnv* env, jobject compilerToVM, jobjectArray initial_methods, jobjectArray match_methods, jint initialSkip, jobject visitor_handle))
1312 
1313   if (!thread->has_last_Java_frame()) {
1314     return NULL;
1315   }
1316   Handle visitor(THREAD, JNIHandles::resolve_non_null(visitor_handle));
1317 
1318   requireInHotSpot("iterateFrames", JVMCI_CHECK_NULL);
1319 
1320   HotSpotJVMCI::HotSpotStackFrameReference::klass()->initialize(CHECK_NULL);
1321 
1322   vframeStream vfst(thread);
1323   jobjectArray methods = initial_methods;
1324   methodHandle visitor_method;
1325   GrowableArray<Method*>* resolved_methods = NULL;
1326 
1327   while (!vfst.at_end()) { // frame loop
1328     bool realloc_called = false;
1329     intptr_t* frame_id = vfst.frame_id();
1330 
1331     // Previous compiledVFrame of this frame; use with at_scope() to reuse scope object pool.
1332     compiledVFrame* prev_cvf = NULL;
1333 
1334     for (; !vfst.at_end() && vfst.frame_id() == frame_id; vfst.next()) { // vframe loop
1335       int frame_number = 0;
1336       Method *method = vfst.method();
1337       int bci = vfst.bci();
1338 
1339       Handle matched_jvmci_method;
1340       if (methods == NULL || matches(methods, method, &resolved_methods, &matched_jvmci_method, THREAD, JVMCIENV)) {
1341         if (initialSkip > 0) {
1342           initialSkip--;
1343           continue;
1344         }
1345         javaVFrame* vf;
1346         if (prev_cvf != NULL && prev_cvf->frame_pointer()->id() == frame_id) {
1347           assert(prev_cvf->is_compiled_frame(), "expected compiled Java frame");
1348           vf = prev_cvf->at_scope(vfst.decode_offset(), vfst.vframe_id());
1349         } else {
1350           vf = vfst.asJavaVFrame();
1351         }
1352 
1353         StackValueCollection* locals = NULL;
1354         typeArrayHandle localIsVirtual_h;
1355         if (vf->is_compiled_frame()) {
1356           // compiled method frame
1357           compiledVFrame* cvf = compiledVFrame::cast(vf);
1358 
1359           ScopeDesc* scope = cvf->scope();
1360           // native wrappers do not have a scope
1361           if (scope != NULL && scope->objects() != NULL) {
1362             prev_cvf = cvf;
1363 
1364             GrowableArray<ScopeValue*>* objects = NULL;
1365             if (!realloc_called) {
1366               objects = scope->objects();
1367             } else {
1368               // some object might already have been re-allocated, only reallocate the non-allocated ones
1369               objects = get_unallocated_objects_or_null(scope->objects());
1370             }
1371 
1372             if (objects != NULL) {
1373               RegisterMap reg_map(vf->register_map());
1374               bool realloc_failures = Deoptimization::realloc_objects(thread, vf->frame_pointer(), &reg_map, objects, CHECK_NULL);
1375               Deoptimization::reassign_fields(vf->frame_pointer(), &reg_map, objects, realloc_failures, false);
1376               realloc_called = true;
1377             }
1378 
1379             GrowableArray<ScopeValue*>* local_values = scope->locals();
1380             for (int i = 0; i < local_values->length(); i++) {
1381               ScopeValue* value = local_values->at(i);
1382               if (value->is_object()) {
1383                 if (localIsVirtual_h.is_null()) {
1384                   typeArrayOop array_oop = oopFactory::new_boolArray(local_values->length(), CHECK_NULL);
1385                   localIsVirtual_h = typeArrayHandle(THREAD, array_oop);
1386                 }
1387                 localIsVirtual_h->bool_at_put(i, true);
1388               }
1389             }
1390           }
1391 
1392           locals = cvf->locals();
1393           frame_number = cvf->vframe_id();
1394         } else {
1395           // interpreted method frame
1396           interpretedVFrame* ivf = interpretedVFrame::cast(vf);
1397 
1398           locals = ivf->locals();
1399         }
1400         assert(bci == vf->bci(), "wrong bci");
1401         assert(method == vf->method(), "wrong method");
1402 
1403         Handle frame_reference = HotSpotJVMCI::HotSpotStackFrameReference::klass()->allocate_instance_handle(CHECK_NULL);
1404         HotSpotJVMCI::HotSpotStackFrameReference::set_bci(JVMCIENV, frame_reference(), bci);
1405         if (matched_jvmci_method.is_null()) {
1406           methodHandle mh(THREAD, method);
1407           JVMCIObject jvmci_method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
1408           matched_jvmci_method = Handle(THREAD, JNIHandles::resolve(jvmci_method.as_jobject()));
1409         }
1410         HotSpotJVMCI::HotSpotStackFrameReference::set_method(JVMCIENV, frame_reference(), matched_jvmci_method());
1411         HotSpotJVMCI::HotSpotStackFrameReference::set_localIsVirtual(JVMCIENV, frame_reference(), localIsVirtual_h());
1412 
1413         HotSpotJVMCI::HotSpotStackFrameReference::set_compilerToVM(JVMCIENV, frame_reference(), JNIHandles::resolve(compilerToVM));
1414         HotSpotJVMCI::HotSpotStackFrameReference::set_stackPointer(JVMCIENV, frame_reference(), (jlong) frame_id);
1415         HotSpotJVMCI::HotSpotStackFrameReference::set_frameNumber(JVMCIENV, frame_reference(), frame_number);
1416 
1417         // initialize the locals array
1418         objArrayOop array_oop = oopFactory::new_objectArray(locals->size(), CHECK_NULL);
1419         objArrayHandle array(THREAD, array_oop);
1420         for (int i = 0; i < locals->size(); i++) {
1421           StackValue* var = locals->at(i);
1422           if (var->type() == T_OBJECT) {
1423             array->obj_at_put(i, locals->at(i)->get_obj()());
1424           }
1425         }
1426         HotSpotJVMCI::HotSpotStackFrameReference::set_locals(JVMCIENV, frame_reference(), array());
1427         HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, frame_reference(), JNI_FALSE);
1428 
1429         JavaValue result(T_OBJECT);
1430         JavaCallArguments args(visitor);
1431         if (visitor_method.is_null()) {
1432           visitor_method = resolve_interface_call(HotSpotJVMCI::InspectedFrameVisitor::klass(), vmSymbols::visitFrame_name(), vmSymbols::visitFrame_signature(), &args, CHECK_NULL);
1433         }
1434 
1435         args.push_oop(frame_reference);
1436         JavaCalls::call(&result, visitor_method, &args, CHECK_NULL);
1437         if (result.get_oop() != NULL) {
1438           return JNIHandles::make_local(thread, result.get_oop());
1439         }
1440         if (methods == initial_methods) {
1441           methods = match_methods;
1442           if (resolved_methods != NULL && JNIHandles::resolve(match_methods) != JNIHandles::resolve(initial_methods)) {
1443             resolved_methods = NULL;
1444           }
1445         }
1446         assert(initialSkip == 0, "There should be no match before initialSkip == 0");
1447         if (HotSpotJVMCI::HotSpotStackFrameReference::objectsMaterialized(JVMCIENV, frame_reference()) == JNI_TRUE) {
1448           // the frame has been deoptimized, we need to re-synchronize the frame and vframe
1449           prev_cvf = NULL;
1450           intptr_t* stack_pointer = (intptr_t*) HotSpotJVMCI::HotSpotStackFrameReference::stackPointer(JVMCIENV, frame_reference());
1451           resync_vframestream_to_compiled_frame(vfst, stack_pointer, frame_number, thread, CHECK_NULL);
1452         }
1453       }
1454     } // end of vframe loop
1455   } // end of frame loop
1456 
1457   // the end was reached without finding a matching method
1458   return NULL;
1459 C2V_END
1460 
1461 C2V_VMENTRY(void, resolveInvokeDynamicInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
1462   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1463   CallInfo callInfo;
1464   LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, Bytecodes::_invokedynamic, CHECK);
1465   ConstantPoolCacheEntry* cp_cache_entry = cp->invokedynamic_cp_cache_entry_at(index);
1466   cp_cache_entry->set_dynamic_call(cp, callInfo);
1467 C2V_END
1468 
1469 C2V_VMENTRY(void, resolveInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
1470   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1471   Klass* holder = cp->klass_ref_at(index, CHECK);
1472   Symbol* name = cp->name_ref_at(index);
1473   if (MethodHandles::is_signature_polymorphic_name(holder, name)) {
1474     CallInfo callInfo;
1475     LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, Bytecodes::_invokehandle, CHECK);
1476     ConstantPoolCacheEntry* cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index));
1477     cp_cache_entry->set_method_handle(cp, callInfo);
1478   }
1479 C2V_END
1480 
1481 C2V_VMENTRY_0(jint, isResolvedInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
1482   constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1483   ConstantPoolCacheEntry* cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index));
1484   if (cp_cache_entry->is_resolved(Bytecodes::_invokehandle)) {
1485     // MethodHandle.invoke* --> LambdaForm?
1486     ResourceMark rm;
1487 
1488     LinkInfo link_info(cp, index, CATCH);
1489 
1490     Klass* resolved_klass = link_info.resolved_klass();
1491 
1492     Symbol* name_sym = cp->name_ref_at(index);
1493 
1494     vmassert(MethodHandles::is_method_handle_invoke_name(resolved_klass, name_sym), "!");
1495     vmassert(MethodHandles::is_signature_polymorphic_name(resolved_klass, name_sym), "!");
1496 
1497     methodHandle adapter_method(THREAD, cp_cache_entry->f1_as_method());
1498 
1499     methodHandle resolved_method(adapter_method);
1500 
1501     // Can we treat it as a regular invokevirtual?
1502     if (resolved_method->method_holder() == resolved_klass && resolved_method->name() == name_sym) {
1503       vmassert(!resolved_method->is_static(),"!");
1504       vmassert(MethodHandles::is_signature_polymorphic_method(resolved_method()),"!");
1505       vmassert(!MethodHandles::is_signature_polymorphic_static(resolved_method->intrinsic_id()), "!");
1506       vmassert(cp_cache_entry->appendix_if_resolved(cp) == NULL, "!");
1507 
1508       methodHandle m(THREAD, LinkResolver::linktime_resolve_virtual_method_or_null(link_info));
1509       vmassert(m == resolved_method, "!!");
1510       return -1;
1511     }
1512 
1513     return Bytecodes::_invokevirtual;
1514   }
1515   if (cp_cache_entry->is_resolved(Bytecodes::_invokedynamic)) {
1516     return Bytecodes::_invokedynamic;
1517   }
1518   return -1;
1519 C2V_END
1520 
1521 
1522 C2V_VMENTRY_NULL(jobject, getSignaturePolymorphicHolders, (JNIEnv* env, jobject))
1523   JVMCIObjectArray holders = JVMCIENV->new_String_array(2, JVMCI_CHECK_NULL);
1524   JVMCIObject mh = JVMCIENV->create_string("Ljava/lang/invoke/MethodHandle;", JVMCI_CHECK_NULL);
1525   JVMCIObject vh = JVMCIENV->create_string("Ljava/lang/invoke/VarHandle;", JVMCI_CHECK_NULL);
1526   JVMCIENV->put_object_at(holders, 0, mh);
1527   JVMCIENV->put_object_at(holders, 1, vh);
1528   return JVMCIENV->get_jobject(holders);
1529 C2V_END
1530 
1531 C2V_VMENTRY_0(jboolean, shouldDebugNonSafepoints, (JNIEnv* env, jobject))
1532   //see compute_recording_non_safepoints in debugInfroRec.cpp
1533   if (JvmtiExport::should_post_compiled_method_load() && FLAG_IS_DEFAULT(DebugNonSafepoints)) {
1534     return true;
1535   }
1536   return DebugNonSafepoints;
1537 C2V_END
1538 
1539 // public native void materializeVirtualObjects(HotSpotStackFrameReference stackFrame, boolean invalidate);
1540 C2V_VMENTRY(void, materializeVirtualObjects, (JNIEnv* env, jobject, jobject _hs_frame, bool invalidate))
1541   JVMCIObject hs_frame = JVMCIENV->wrap(_hs_frame);
1542   if (hs_frame.is_null()) {
1543     JVMCI_THROW_MSG(NullPointerException, "stack frame is null");
1544   }
1545 
1546   requireInHotSpot("materializeVirtualObjects", JVMCI_CHECK);
1547 
1548   JVMCIENV->HotSpotStackFrameReference_initialize(JVMCI_CHECK);
1549 
1550   // look for the given stack frame
1551   StackFrameStream fst(thread, false /* update */, true /* process_frames */);
1552   intptr_t* stack_pointer = (intptr_t*) JVMCIENV->get_HotSpotStackFrameReference_stackPointer(hs_frame);
1553   while (fst.current()->id() != stack_pointer && !fst.is_done()) {
1554     fst.next();
1555   }
1556   if (fst.current()->id() != stack_pointer) {
1557     JVMCI_THROW_MSG(IllegalStateException, "stack frame not found");
1558   }
1559 
1560   if (invalidate) {
1561     if (!fst.current()->is_compiled_frame()) {
1562       JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected");
1563     }
1564     assert(fst.current()->cb()->is_nmethod(), "nmethod expected");
1565     ((nmethod*) fst.current()->cb())->make_not_entrant();
1566   }
1567   Deoptimization::deoptimize(thread, *fst.current(), Deoptimization::Reason_none);
1568   // look for the frame again as it has been updated by deopt (pc, deopt state...)
1569   StackFrameStream fstAfterDeopt(thread, true /* update */, true /* process_frames */);
1570   while (fstAfterDeopt.current()->id() != stack_pointer && !fstAfterDeopt.is_done()) {
1571     fstAfterDeopt.next();
1572   }
1573   if (fstAfterDeopt.current()->id() != stack_pointer) {
1574     JVMCI_THROW_MSG(IllegalStateException, "stack frame not found after deopt");
1575   }
1576 
1577   vframe* vf = vframe::new_vframe(fstAfterDeopt.current(), fstAfterDeopt.register_map(), thread);
1578   if (!vf->is_compiled_frame()) {
1579     JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected");
1580   }
1581 
1582   GrowableArray<compiledVFrame*>* virtualFrames = new GrowableArray<compiledVFrame*>(10);
1583   while (true) {
1584     assert(vf->is_compiled_frame(), "Wrong frame type");
1585     virtualFrames->push(compiledVFrame::cast(vf));
1586     if (vf->is_top()) {
1587       break;
1588     }
1589     vf = vf->sender();
1590   }
1591 
1592   int last_frame_number = JVMCIENV->get_HotSpotStackFrameReference_frameNumber(hs_frame);
1593   if (last_frame_number >= virtualFrames->length()) {
1594     JVMCI_THROW_MSG(IllegalStateException, "invalid frame number");
1595   }
1596 
1597   // Reallocate the non-escaping objects and restore their fields.
1598   assert (virtualFrames->at(last_frame_number)->scope() != NULL,"invalid scope");
1599   GrowableArray<ScopeValue*>* objects = virtualFrames->at(last_frame_number)->scope()->objects();
1600 
1601   if (objects == NULL) {
1602     // no objects to materialize
1603     return;
1604   }
1605 
1606   bool realloc_failures = Deoptimization::realloc_objects(thread, fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, CHECK);
1607   Deoptimization::reassign_fields(fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, realloc_failures, false);
1608 
1609   for (int frame_index = 0; frame_index < virtualFrames->length(); frame_index++) {
1610     compiledVFrame* cvf = virtualFrames->at(frame_index);
1611 
1612     GrowableArray<ScopeValue*>* scopedValues = cvf->scope()->locals();
1613     StackValueCollection* locals = cvf->locals();
1614     if (locals != NULL) {
1615       for (int i2 = 0; i2 < locals->size(); i2++) {
1616         StackValue* var = locals->at(i2);
1617         if (var->type() == T_OBJECT && scopedValues->at(i2)->is_object()) {
1618           jvalue val;
1619           val.l = cast_from_oop<jobject>(locals->at(i2)->get_obj()());
1620           cvf->update_local(T_OBJECT, i2, val);
1621         }
1622       }
1623     }
1624 
1625     GrowableArray<ScopeValue*>* scopeExpressions = cvf->scope()->expressions();
1626     StackValueCollection* expressions = cvf->expressions();
1627     if (expressions != NULL) {
1628       for (int i2 = 0; i2 < expressions->size(); i2++) {
1629         StackValue* var = expressions->at(i2);
1630         if (var->type() == T_OBJECT && scopeExpressions->at(i2)->is_object()) {
1631           jvalue val;
1632           val.l = cast_from_oop<jobject>(expressions->at(i2)->get_obj()());
1633           cvf->update_stack(T_OBJECT, i2, val);
1634         }
1635       }
1636     }
1637 
1638     GrowableArray<MonitorValue*>* scopeMonitors = cvf->scope()->monitors();
1639     GrowableArray<MonitorInfo*>* monitors = cvf->monitors();
1640     if (monitors != NULL) {
1641       for (int i2 = 0; i2 < monitors->length(); i2++) {
1642         cvf->update_monitor(i2, monitors->at(i2));
1643       }
1644     }
1645   }
1646 
1647   // all locals are materialized by now
1648   JVMCIENV->set_HotSpotStackFrameReference_localIsVirtual(hs_frame, NULL);
1649   // update the locals array
1650   JVMCIObjectArray array = JVMCIENV->get_HotSpotStackFrameReference_locals(hs_frame);
1651   StackValueCollection* locals = virtualFrames->at(last_frame_number)->locals();
1652   for (int i = 0; i < locals->size(); i++) {
1653     StackValue* var = locals->at(i);
1654     if (var->type() == T_OBJECT) {
1655       JVMCIENV->put_object_at(array, i, HotSpotJVMCI::wrap(locals->at(i)->get_obj()()));
1656     }
1657   }
1658   HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, hs_frame, JNI_TRUE);
1659 C2V_END
1660 
1661 // Use of tty does not require the current thread to be attached to the VM
1662 // so no need for a full C2V_VMENTRY transition.
1663 C2V_VMENTRY_PREFIX(void, writeDebugOutput, (JNIEnv* env, jobject, jlong buffer, jint length, bool flush))
1664   if (length <= 8) {
1665     tty->write((char*) &buffer, length);
1666   } else {
1667     tty->write((char*) buffer, length);
1668   }
1669   if (flush) {
1670     tty->flush();
1671   }
1672 C2V_END
1673 
1674 // Use of tty does not require the current thread to be attached to the VM
1675 // so no need for a full C2V_VMENTRY transition.
1676 C2V_VMENTRY_PREFIX(void, flushDebugOutput, (JNIEnv* env, jobject))
1677   tty->flush();
1678 C2V_END
1679 
1680 C2V_VMENTRY_0(jint, methodDataProfileDataSize, (JNIEnv* env, jobject, jlong method_data_pointer, jint position))
1681   MethodData* mdo = (MethodData*) method_data_pointer;
1682   ProfileData* profile_data = mdo->data_at(position);
1683   if (mdo->is_valid(profile_data)) {
1684     return profile_data->size_in_bytes();
1685   }
1686   DataLayout* data    = mdo->extra_data_base();
1687   DataLayout* end   = mdo->extra_data_limit();
1688   for (;; data = mdo->next_extra(data)) {
1689     assert(data < end, "moved past end of extra data");
1690     profile_data = data->data_in();
1691     if (mdo->dp_to_di(profile_data->dp()) == position) {
1692       return profile_data->size_in_bytes();
1693     }
1694   }
1695   JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Invalid profile data position %d", position));
1696 C2V_END
1697 
1698 C2V_VMENTRY_NULL(jobject, getInterfaces, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1699   Klass* klass = UNPACK_PAIR(Klass, klass);
1700   if (klass == nullptr) {
1701     JVMCI_THROW_0(NullPointerException);
1702   }
1703 
1704   if (!klass->is_instance_klass()) {
1705     JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be instance klass", klass->external_name()));
1706   }
1707   InstanceKlass* iklass = InstanceKlass::cast(klass);
1708 
1709   // Regular instance klass, fill in all local interfaces
1710   int size = iklass->local_interfaces()->length();
1711   JVMCIObjectArray interfaces = JVMCIENV->new_HotSpotResolvedObjectTypeImpl_array(size, JVMCI_CHECK_NULL);
1712   for (int index = 0; index < size; index++) {
1713     JVMCIKlassHandle klass(THREAD);
1714     Klass* k = iklass->local_interfaces()->at(index);
1715     klass = k;
1716     JVMCIObject type = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
1717     JVMCIENV->put_object_at(interfaces, index, type);
1718   }
1719   return JVMCIENV->get_jobject(interfaces);
1720 C2V_END
1721 
1722 C2V_VMENTRY_NULL(jobject, getComponentType, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1723   Klass* klass = UNPACK_PAIR(Klass, klass);
1724   if (klass == nullptr) {
1725     JVMCI_THROW_0(NullPointerException);
1726   }
1727 
1728   if (!klass->is_array_klass()) {
1729     return nullptr;
1730   }
1731   oop mirror = klass->java_mirror();
1732   oop component_mirror = java_lang_Class::component_mirror(mirror);
1733   if (component_mirror == nullptr) {
1734     JVMCI_THROW_MSG_0(NullPointerException,
1735                     err_msg("Component mirror for array class %s is null", klass->external_name()))
1736   }
1737 
1738   Klass* component_klass = java_lang_Class::as_Klass(component_mirror);
1739   if (component_klass != NULL) {
1740     JVMCIKlassHandle klass_handle(THREAD, component_klass);
1741     JVMCIObject result = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL);
1742     return JVMCIENV->get_jobject(result);
1743   }
1744   BasicType type = java_lang_Class::primitive_type(component_mirror);
1745   JVMCIObject result = JVMCIENV->get_jvmci_primitive_type(type);
1746   return JVMCIENV->get_jobject(result);
1747 C2V_END
1748 
1749 C2V_VMENTRY(void, ensureInitialized, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1750   Klass* klass = UNPACK_PAIR(Klass, klass);
1751   if (klass == nullptr) {
1752     JVMCI_THROW(NullPointerException);
1753   }
1754   if (klass->should_be_initialized()) {
1755     InstanceKlass* k = InstanceKlass::cast(klass);
1756     k->initialize(CHECK);
1757   }
1758 C2V_END
1759 
1760 C2V_VMENTRY(void, ensureLinked, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1761   Klass* klass = UNPACK_PAIR(Klass, klass);
1762   if (klass == nullptr) {
1763     JVMCI_THROW(NullPointerException);
1764   }
1765   if (klass->is_instance_klass()) {
1766     InstanceKlass* k = InstanceKlass::cast(klass);
1767     k->link_class(CHECK);
1768   }
1769 C2V_END
1770 
1771 C2V_VMENTRY_0(jint, interpreterFrameSize, (JNIEnv* env, jobject, jobject bytecode_frame_handle))
1772   if (bytecode_frame_handle == NULL) {
1773     JVMCI_THROW_0(NullPointerException);
1774   }
1775 
1776   JVMCIObject top_bytecode_frame = JVMCIENV->wrap(bytecode_frame_handle);
1777   JVMCIObject bytecode_frame = top_bytecode_frame;
1778   int size = 0;
1779   int callee_parameters = 0;
1780   int callee_locals = 0;
1781   Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame));
1782   int extra_args = method->max_stack() - JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame);
1783 
1784   while (bytecode_frame.is_non_null()) {
1785     int locks = JVMCIENV->get_BytecodeFrame_numLocks(bytecode_frame);
1786     int temps = JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame);
1787     bool is_top_frame = (JVMCIENV->equals(bytecode_frame, top_bytecode_frame));
1788     Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame));
1789 
1790     int frame_size = BytesPerWord * Interpreter::size_activation(method->max_stack(),
1791                                                                  temps + callee_parameters,
1792                                                                  extra_args,
1793                                                                  locks,
1794                                                                  callee_parameters,
1795                                                                  callee_locals,
1796                                                                  is_top_frame);
1797     size += frame_size;
1798 
1799     callee_parameters = method->size_of_parameters();
1800     callee_locals = method->max_locals();
1801     extra_args = 0;
1802     bytecode_frame = JVMCIENV->get_BytecodePosition_caller(bytecode_frame);
1803   }
1804   return size + Deoptimization::last_frame_adjust(0, callee_locals) * BytesPerWord;
1805 C2V_END
1806 
1807 C2V_VMENTRY(void, compileToBytecode, (JNIEnv* env, jobject, jobject lambda_form_handle))
1808   Handle lambda_form = JVMCIENV->asConstant(JVMCIENV->wrap(lambda_form_handle), JVMCI_CHECK);
1809   if (lambda_form->is_a(vmClasses::LambdaForm_klass())) {
1810     TempNewSymbol compileToBytecode = SymbolTable::new_symbol("compileToBytecode");
1811     JavaValue result(T_VOID);
1812     JavaCalls::call_special(&result, lambda_form, vmClasses::LambdaForm_klass(), compileToBytecode, vmSymbols::void_method_signature(), CHECK);
1813   } else {
1814     JVMCI_THROW_MSG(IllegalArgumentException,
1815                     err_msg("Unexpected type: %s", lambda_form->klass()->external_name()))
1816   }
1817 C2V_END
1818 
1819 C2V_VMENTRY_0(jint, getIdentityHashCode, (JNIEnv* env, jobject, jobject object))
1820   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
1821   return obj->identity_hash();
1822 C2V_END
1823 
1824 C2V_VMENTRY_0(jboolean, isInternedString, (JNIEnv* env, jobject, jobject object))
1825   Handle str = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
1826   if (!java_lang_String::is_instance(str())) {
1827     return false;
1828   }
1829   int len;
1830   jchar* name = java_lang_String::as_unicode_string(str(), len, CHECK_false);
1831   return (StringTable::lookup(name, len) != NULL);
1832 C2V_END
1833 
1834 
1835 C2V_VMENTRY_NULL(jobject, unboxPrimitive, (JNIEnv* env, jobject, jobject object))
1836   if (object == NULL) {
1837     JVMCI_THROW_0(NullPointerException);
1838   }
1839   Handle box = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
1840   BasicType type = java_lang_boxing_object::basic_type(box());
1841   jvalue result;
1842   if (java_lang_boxing_object::get_value(box(), &result) == T_ILLEGAL) {
1843     return NULL;
1844   }
1845   JVMCIObject boxResult = JVMCIENV->create_box(type, &result, JVMCI_CHECK_NULL);
1846   return JVMCIENV->get_jobject(boxResult);
1847 C2V_END
1848 
1849 C2V_VMENTRY_NULL(jobject, boxPrimitive, (JNIEnv* env, jobject, jobject object))
1850   if (object == NULL) {
1851     JVMCI_THROW_0(NullPointerException);
1852   }
1853   JVMCIObject box = JVMCIENV->wrap(object);
1854   BasicType type = JVMCIENV->get_box_type(box);
1855   if (type == T_ILLEGAL) {
1856     return NULL;
1857   }
1858   jvalue value = JVMCIENV->get_boxed_value(type, box);
1859   JavaValue box_result(T_OBJECT);
1860   JavaCallArguments jargs;
1861   Klass* box_klass = NULL;
1862   Symbol* box_signature = NULL;
1863 #define BOX_CASE(bt, v, argtype, name)           \
1864   case bt: \
1865     jargs.push_##argtype(value.v); \
1866     box_klass = vmClasses::name##_klass(); \
1867     box_signature = vmSymbols::name##_valueOf_signature(); \
1868     break
1869 
1870   switch (type) {
1871     BOX_CASE(T_BOOLEAN, z, int, Boolean);
1872     BOX_CASE(T_BYTE, b, int, Byte);
1873     BOX_CASE(T_CHAR, c, int, Character);
1874     BOX_CASE(T_SHORT, s, int, Short);
1875     BOX_CASE(T_INT, i, int, Integer);
1876     BOX_CASE(T_LONG, j, long, Long);
1877     BOX_CASE(T_FLOAT, f, float, Float);
1878     BOX_CASE(T_DOUBLE, d, double, Double);
1879     default:
1880       ShouldNotReachHere();
1881   }
1882 #undef BOX_CASE
1883 
1884   JavaCalls::call_static(&box_result,
1885                          box_klass,
1886                          vmSymbols::valueOf_name(),
1887                          box_signature, &jargs, CHECK_NULL);
1888   oop hotspot_box = box_result.get_oop();
1889   JVMCIObject result = JVMCIENV->get_object_constant(hotspot_box, false);
1890   return JVMCIENV->get_jobject(result);
1891 C2V_END
1892 
1893 C2V_VMENTRY_NULL(jobjectArray, getDeclaredConstructors, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1894   Klass* klass = UNPACK_PAIR(Klass, klass);
1895   if (klass == nullptr) {
1896     JVMCI_THROW_0(NullPointerException);
1897   }
1898   if (!klass->is_instance_klass()) {
1899     JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
1900     return JVMCIENV->get_jobjectArray(methods);
1901   }
1902 
1903   InstanceKlass* iklass = InstanceKlass::cast(klass);
1904   GrowableArray<Method*> constructors_array;
1905   for (int i = 0; i < iklass->methods()->length(); i++) {
1906     Method* m = iklass->methods()->at(i);
1907     if (m->is_initializer() && !m->is_static()) {
1908       constructors_array.append(m);
1909     }
1910   }
1911   JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(constructors_array.length(), JVMCI_CHECK_NULL);
1912   for (int i = 0; i < constructors_array.length(); i++) {
1913     methodHandle ctor(THREAD, constructors_array.at(i));
1914     JVMCIObject method = JVMCIENV->get_jvmci_method(ctor, JVMCI_CHECK_NULL);
1915     JVMCIENV->put_object_at(methods, i, method);
1916   }
1917   return JVMCIENV->get_jobjectArray(methods);
1918 C2V_END
1919 
1920 C2V_VMENTRY_NULL(jobjectArray, getDeclaredMethods, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1921   Klass* klass = UNPACK_PAIR(Klass, klass);
1922   if (klass == nullptr) {
1923     JVMCI_THROW_0(NullPointerException);
1924   }
1925   if (!klass->is_instance_klass()) {
1926     JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
1927     return JVMCIENV->get_jobjectArray(methods);
1928   }
1929 
1930   InstanceKlass* iklass = InstanceKlass::cast(klass);
1931   GrowableArray<Method*> methods_array;
1932   for (int i = 0; i < iklass->methods()->length(); i++) {
1933     Method* m = iklass->methods()->at(i);
1934     if (!m->is_initializer() && !m->is_overpass()) {
1935       methods_array.append(m);
1936     }
1937   }
1938   JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(methods_array.length(), JVMCI_CHECK_NULL);
1939   for (int i = 0; i < methods_array.length(); i++) {
1940     methodHandle mh(THREAD, methods_array.at(i));
1941     JVMCIObject method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
1942     JVMCIENV->put_object_at(methods, i, method);
1943   }
1944   return JVMCIENV->get_jobjectArray(methods);
1945 C2V_END
1946 
1947 static jobject read_field_value(Handle obj, long displacement, jchar type_char, bool is_static, Thread* THREAD, JVMCIEnv* JVMCIENV) {
1948 
1949   BasicType basic_type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_NULL);
1950   int basic_type_elemsize = type2aelembytes(basic_type);
1951   if (displacement < 0 || ((size_t) displacement + basic_type_elemsize > HeapWordSize * obj->size())) {
1952     // Reading outside of the object bounds
1953     JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading outside object bounds");
1954   }
1955 
1956   // Perform basic sanity checks on the read.  Primitive reads are permitted to read outside the
1957   // bounds of their fields but object reads must map exactly onto the underlying oop slot.
1958   bool aligned = (displacement % basic_type_elemsize) == 0;
1959   if (!aligned) {
1960     JVMCI_THROW_MSG_NULL(IllegalArgumentException, "read is unaligned");
1961   }
1962   if (basic_type == T_OBJECT) {
1963     if (obj->is_objArray()) {
1964       if (displacement < arrayOopDesc::base_offset_in_bytes(T_OBJECT)) {
1965         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header");
1966       }
1967       if (displacement + heapOopSize > arrayOopDesc::base_offset_in_bytes(T_OBJECT) + arrayOop(obj())->length() * heapOopSize) {
1968         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading after last array element");
1969       }
1970       if (((displacement - arrayOopDesc::base_offset_in_bytes(T_OBJECT)) % heapOopSize) != 0) {
1971         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "misaligned object read from array");
1972       }
1973     } else if (obj->is_instance()) {
1974       InstanceKlass* klass = InstanceKlass::cast(is_static ? java_lang_Class::as_Klass(obj()) : obj->klass());
1975       fieldDescriptor fd;
1976       if (!klass->find_field_from_offset(displacement, is_static, &fd)) {
1977         JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Can't find field at displacement %d in object of type %s", (int) displacement, klass->external_name()));
1978       }
1979       if (fd.field_type() != T_OBJECT && fd.field_type() != T_ARRAY) {
1980         JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Field at displacement %d in object of type %s is %s but expected %s", (int) displacement,
1981                                                                klass->external_name(), type2name(fd.field_type()), type2name(basic_type)));
1982       }
1983     } else if (obj->is_typeArray()) {
1984       JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Can't read objects from primitive array");
1985     } else {
1986       ShouldNotReachHere();
1987     }
1988   } else {
1989     if (obj->is_objArray()) {
1990       JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Reading primitive from object array");
1991     } else if (obj->is_typeArray()) {
1992       if (displacement < arrayOopDesc::base_offset_in_bytes(ArrayKlass::cast(obj->klass())->element_type())) {
1993         JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header");
1994       }
1995     }
1996   }
1997 
1998   jlong value = 0;
1999 
2000   // Treat all reads as volatile for simplicity as this function can be used
2001   // both for reading Java fields declared as volatile as well as for constant
2002   // folding Unsafe.get* methods with volatile semantics.
2003 
2004   switch (basic_type) {
2005     case T_BOOLEAN: value = obj->bool_field_acquire(displacement);  break;
2006     case T_BYTE:    value = obj->byte_field_acquire(displacement);  break;
2007     case T_SHORT:   value = obj->short_field_acquire(displacement); break;
2008     case T_CHAR:    value = obj->char_field_acquire(displacement);  break;
2009     case T_FLOAT:
2010     case T_INT:     value = obj->int_field_acquire(displacement);   break;
2011     case T_DOUBLE:
2012     case T_LONG:    value = obj->long_field_acquire(displacement);  break;
2013 
2014     case T_OBJECT: {
2015       if (displacement == java_lang_Class::component_mirror_offset() && java_lang_Class::is_instance(obj()) &&
2016           (java_lang_Class::as_Klass(obj()) == nullptr || !java_lang_Class::as_Klass(obj())->is_array_klass())) {
2017         // Class.componentType for non-array classes can transiently contain an int[] that's
2018         // used for locking so always return null to mimic Class.getComponentType()
2019         return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
2020       }
2021 
2022       oop value = obj->obj_field_acquire(displacement);
2023 
2024       if (value == nullptr) {
2025         return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
2026       } else {
2027         if (value != nullptr && !oopDesc::is_oop(value)) {
2028           // Throw an exception to improve debuggability.  This check isn't totally reliable because
2029           // is_oop doesn't try to be completety safe but for most invalid values it provides a good
2030           // enough answer.  It possible to crash in the is_oop call but that just means the crash happens
2031           // closer to where things went wrong.
2032           JVMCI_THROW_MSG_NULL(InternalError, err_msg("Read bad oop " INTPTR_FORMAT " at offset " JLONG_FORMAT " in object " INTPTR_FORMAT " of type %s",
2033                                                       p2i(value), displacement, p2i(obj()), obj->klass()->external_name()));
2034         }
2035 
2036         JVMCIObject result = JVMCIENV->get_object_constant(value);
2037         return JVMCIENV->get_jobject(result);
2038       }
2039     }
2040 
2041     default:
2042       ShouldNotReachHere();
2043   }
2044   JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, value, JVMCI_CHECK_NULL);
2045   return JVMCIENV->get_jobject(result);
2046 }
2047 
2048 C2V_VMENTRY_NULL(jobject, readStaticFieldValue, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), long displacement, jchar type_char))
2049   Klass* klass = UNPACK_PAIR(Klass, klass);
2050   Handle obj(THREAD, klass->java_mirror());
2051   return read_field_value(obj, displacement, type_char, true, THREAD, JVMCIENV);
2052 C2V_END
2053 
2054 C2V_VMENTRY_NULL(jobject, readFieldValue, (JNIEnv* env, jobject, jobject object, ARGUMENT_PAIR(expected_type), long displacement, jchar type_char))
2055   if (object == nullptr) {
2056     JVMCI_THROW_0(NullPointerException);
2057   }
2058 
2059   // asConstant will throw an NPE if a constant contains NULL
2060   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2061 
2062   Klass* expected_klass = UNPACK_PAIR(Klass, expected_type);
2063   if (expected_klass != nullptr) {
2064     InstanceKlass* expected_iklass = InstanceKlass::cast(expected_klass);
2065     if (!obj->is_a(expected_iklass)) {
2066       // Not of the expected type
2067       return nullptr;
2068     }
2069   }
2070   bool is_static = expected_klass == nullptr && java_lang_Class::is_instance(obj()) && displacement >= InstanceMirrorKlass::offset_of_static_fields();
2071   return read_field_value(obj, displacement, type_char, is_static, THREAD, JVMCIENV);
2072 C2V_END
2073 
2074 C2V_VMENTRY_0(jboolean, isInstance, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jobject object))
2075   Klass* klass = UNPACK_PAIR(Klass, klass);
2076   if (object == NULL || klass == nullptr) {
2077     JVMCI_THROW_0(NullPointerException);
2078   }
2079   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
2080   return obj->is_a(klass);
2081 C2V_END
2082 
2083 C2V_VMENTRY_0(jboolean, isAssignableFrom, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(subklass)))
2084   Klass* klass = UNPACK_PAIR(Klass, klass);
2085   Klass* subklass = UNPACK_PAIR(Klass, subklass);
2086   if (klass == nullptr || subklass == nullptr) {
2087     JVMCI_THROW_0(NullPointerException);
2088   }
2089   return subklass->is_subtype_of(klass);
2090 C2V_END
2091 
2092 C2V_VMENTRY_0(jboolean, isTrustedForIntrinsics, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2093   Klass* klass = UNPACK_PAIR(Klass, klass);
2094   if (klass == nullptr) {
2095     JVMCI_THROW_0(NullPointerException);
2096   }
2097   InstanceKlass* ik = InstanceKlass::cast(klass);
2098   if (ik->class_loader_data()->is_boot_class_loader_data() || ik->class_loader_data()->is_platform_class_loader_data()) {
2099     return true;
2100   }
2101   return false;
2102 C2V_END
2103 
2104 C2V_VMENTRY_NULL(jobject, asJavaType, (JNIEnv* env, jobject, jobject object))
2105   if (object == NULL) {
2106     JVMCI_THROW_0(NullPointerException);
2107   }
2108   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2109   if (java_lang_Class::is_instance(obj())) {
2110     if (java_lang_Class::is_primitive(obj())) {
2111       JVMCIObject type = JVMCIENV->get_jvmci_primitive_type(java_lang_Class::primitive_type(obj()));
2112       return JVMCIENV->get_jobject(type);
2113     }
2114     Klass* klass = java_lang_Class::as_Klass(obj());
2115     JVMCIKlassHandle klass_handle(THREAD);
2116     klass_handle = klass;
2117     JVMCIObject type = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL);
2118     return JVMCIENV->get_jobject(type);
2119   }
2120   return NULL;
2121 C2V_END
2122 
2123 
2124 C2V_VMENTRY_NULL(jobject, asString, (JNIEnv* env, jobject, jobject object))
2125   if (object == NULL) {
2126     JVMCI_THROW_0(NullPointerException);
2127   }
2128   Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2129   const char* str = java_lang_String::as_utf8_string(obj());
2130   JVMCIObject result = JVMCIENV->create_string(str, JVMCI_CHECK_NULL);
2131   return JVMCIENV->get_jobject(result);
2132 C2V_END
2133 
2134 
2135 C2V_VMENTRY_0(jboolean, equals, (JNIEnv* env, jobject, jobject x, jlong xHandle, jobject y, jlong yHandle))
2136   if (x == NULL || y == NULL) {
2137     JVMCI_THROW_0(NullPointerException);
2138   }
2139   return JVMCIENV->resolve_oop_handle(xHandle) == JVMCIENV->resolve_oop_handle(yHandle);
2140 C2V_END
2141 
2142 C2V_VMENTRY_NULL(jobject, getJavaMirror, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2143   Klass* klass = UNPACK_PAIR(Klass, klass);
2144   if (klass == nullptr) {
2145     JVMCI_THROW_0(NullPointerException);
2146   }
2147   Handle mirror(THREAD, klass->java_mirror());
2148   JVMCIObject result = JVMCIENV->get_object_constant(mirror());
2149   return JVMCIENV->get_jobject(result);
2150 C2V_END
2151 
2152 
2153 C2V_VMENTRY_0(jint, getArrayLength, (JNIEnv* env, jobject, jobject x))
2154   if (x == NULL) {
2155     JVMCI_THROW_0(NullPointerException);
2156   }
2157   Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_0);
2158   if (xobj->klass()->is_array_klass()) {
2159     return arrayOop(xobj())->length();
2160   }
2161   return -1;
2162  C2V_END
2163 
2164 
2165 C2V_VMENTRY_NULL(jobject, readArrayElement, (JNIEnv* env, jobject, jobject x, int index))
2166   if (x == NULL) {
2167     JVMCI_THROW_0(NullPointerException);
2168   }
2169   Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_NULL);
2170   if (xobj->klass()->is_array_klass()) {
2171     arrayOop array = arrayOop(xobj());
2172     BasicType element_type = ArrayKlass::cast(array->klass())->element_type();
2173     if (index < 0 || index >= array->length()) {
2174       return NULL;
2175     }
2176     JVMCIObject result;
2177 
2178     if (element_type == T_OBJECT) {
2179       result = JVMCIENV->get_object_constant(objArrayOop(xobj())->obj_at(index));
2180       if (result.is_null()) {
2181         result = JVMCIENV->get_JavaConstant_NULL_POINTER();
2182       }
2183     } else {
2184       jvalue value;
2185       switch (element_type) {
2186         case T_DOUBLE:        value.d = typeArrayOop(xobj())->double_at(index);        break;
2187         case T_FLOAT:         value.f = typeArrayOop(xobj())->float_at(index);         break;
2188         case T_LONG:          value.j = typeArrayOop(xobj())->long_at(index);          break;
2189         case T_INT:           value.i = typeArrayOop(xobj())->int_at(index);            break;
2190         case T_SHORT:         value.s = typeArrayOop(xobj())->short_at(index);          break;
2191         case T_CHAR:          value.c = typeArrayOop(xobj())->char_at(index);           break;
2192         case T_BYTE:          value.b = typeArrayOop(xobj())->byte_at(index);           break;
2193         case T_BOOLEAN:       value.z = typeArrayOop(xobj())->byte_at(index) & 1;       break;
2194         default:              ShouldNotReachHere();
2195       }
2196       result = JVMCIENV->create_box(element_type, &value, JVMCI_CHECK_NULL);
2197     }
2198     assert(!result.is_null(), "must have a value");
2199     return JVMCIENV->get_jobject(result);
2200   }
2201   return NULL;;
2202 C2V_END
2203 
2204 
2205 C2V_VMENTRY_0(jint, arrayBaseOffset, (JNIEnv* env, jobject, jchar type_char))
2206   BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
2207   return arrayOopDesc::header_size(type) * HeapWordSize;
2208 C2V_END
2209 
2210 C2V_VMENTRY_0(jint, arrayIndexScale, (JNIEnv* env, jobject, jchar type_char))
2211   BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
2212   return type2aelembytes(type);
2213 C2V_END
2214 
2215 C2V_VMENTRY(void, releaseClearedOopHandles, (JNIEnv* env, jobject))
2216   JVMCIENV->runtime()->release_cleared_oop_handles();
2217 C2V_END
2218 
2219 static void requireJVMCINativeLibrary(JVMCI_TRAPS) {
2220   if (!UseJVMCINativeLibrary) {
2221     JVMCI_THROW_MSG(UnsupportedOperationException, "JVMCI shared library is not enabled (requires -XX:+UseJVMCINativeLibrary)");
2222   }
2223 }
2224 
2225 C2V_VMENTRY_NULL(jlongArray, registerNativeMethods, (JNIEnv* env, jobject, jclass mirror))
2226   requireJVMCINativeLibrary(JVMCI_CHECK_NULL);
2227   requireInHotSpot("registerNativeMethods", JVMCI_CHECK_NULL);
2228   char* sl_path;
2229   void* sl_handle;
2230   JVMCIRuntime* runtime;
2231   {
2232     // Ensure the JVMCI shared library runtime is initialized.
2233     JVMCIEnv __peer_jvmci_env__(thread, false, __FILE__, __LINE__);
2234     JVMCIEnv* peerEnv = &__peer_jvmci_env__;
2235     HandleMark hm(THREAD);
2236     runtime = JVMCI::compiler_runtime(thread);
2237     if (peerEnv->has_pending_exception()) {
2238       peerEnv->describe_pending_exception(true);
2239     }
2240     sl_handle = JVMCI::get_shared_library(sl_path, false);
2241     if (sl_handle == NULL) {
2242       JVMCI_THROW_MSG_0(InternalError, err_msg("Error initializing JVMCI runtime %d", runtime->id()));
2243     }
2244   }
2245 
2246   if (mirror == NULL) {
2247     JVMCI_THROW_0(NullPointerException);
2248   }
2249   Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2250   if (klass == NULL || !klass->is_instance_klass()) {
2251     JVMCI_THROW_MSG_0(IllegalArgumentException, "clazz is for primitive type");
2252   }
2253 
2254   InstanceKlass* iklass = InstanceKlass::cast(klass);
2255   for (int i = 0; i < iklass->methods()->length(); i++) {
2256     methodHandle method(THREAD, iklass->methods()->at(i));
2257     if (method->is_native()) {
2258 
2259       // Compute argument size
2260       int args_size = 1                             // JNIEnv
2261                     + (method->is_static() ? 1 : 0) // class for static methods
2262                     + method->size_of_parameters(); // actual parameters
2263 
2264       // 1) Try JNI short style
2265       stringStream st;
2266       char* pure_name = NativeLookup::pure_jni_name(method);
2267       guarantee(pure_name != NULL, "Illegal native method name encountered");
2268       os::print_jni_name_prefix_on(&st, args_size);
2269       st.print_raw(pure_name);
2270       os::print_jni_name_suffix_on(&st, args_size);
2271       char* jni_name = st.as_string();
2272 
2273       address entry = (address) os::dll_lookup(sl_handle, jni_name);
2274       if (entry == NULL) {
2275         // 2) Try JNI long style
2276         st.reset();
2277         char* long_name = NativeLookup::long_jni_name(method);
2278         guarantee(long_name != NULL, "Illegal native method name encountered");
2279         os::print_jni_name_prefix_on(&st, args_size);
2280         st.print_raw(pure_name);
2281         st.print_raw(long_name);
2282         os::print_jni_name_suffix_on(&st, args_size);
2283         char* jni_long_name = st.as_string();
2284         entry = (address) os::dll_lookup(sl_handle, jni_long_name);
2285         if (entry == NULL) {
2286           JVMCI_THROW_MSG_0(UnsatisfiedLinkError, err_msg("%s [neither %s nor %s exist in %s]",
2287               method->name_and_sig_as_C_string(),
2288               jni_name, jni_long_name, sl_path));
2289         }
2290       }
2291 
2292       if (method->has_native_function() && entry != method->native_function()) {
2293         JVMCI_THROW_MSG_0(UnsatisfiedLinkError, err_msg("%s [cannot re-link from " PTR_FORMAT " to " PTR_FORMAT "]",
2294             method->name_and_sig_as_C_string(), p2i(method->native_function()), p2i(entry)));
2295       }
2296       method->set_native_function(entry, Method::native_bind_event_is_interesting);
2297       log_debug(jni, resolve)("[Dynamic-linking native method %s.%s ... JNI] @ " PTR_FORMAT,
2298                               method->method_holder()->external_name(),
2299                               method->name()->as_C_string(),
2300                               p2i((void*) entry));
2301     }
2302   }
2303 
2304   typeArrayOop info_oop = oopFactory::new_longArray(4, CHECK_0);
2305   jlongArray info = (jlongArray) JNIHandles::make_local(THREAD, info_oop);
2306   runtime->init_JavaVM_info(info, JVMCI_CHECK_0);
2307   return info;
2308 }
2309 
2310 C2V_VMENTRY_PREFIX(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject c2vm))
2311   if (thread == nullptr || thread->libjvmci_runtime() == nullptr) {
2312     // Called from unattached JVMCI shared library thread
2313     return false;
2314   }
2315   JVMCITraceMark jtm("isCurrentThreadAttached");
2316   if (thread->jni_environment() == env) {
2317     C2V_BLOCK(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject))
2318     requireJVMCINativeLibrary(JVMCI_CHECK_0);
2319     JVMCIRuntime* runtime = thread->libjvmci_runtime();
2320     if (runtime == nullptr || !runtime->has_shared_library_javavm()) {
2321       JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in isCurrentThreadAttached");
2322     }
2323     JNIEnv* peerEnv;
2324     return runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) == JNI_OK;
2325   }
2326   return true;
2327 C2V_END
2328 
2329 C2V_VMENTRY_PREFIX(jlong, getCurrentJavaThread, (JNIEnv* env, jobject c2vm))
2330   if (thread == NULL) {
2331     // Called from unattached JVMCI shared library thread
2332     return 0L;
2333   }
2334   JVMCITraceMark jtm("getCurrentJavaThread");
2335   return (jlong) p2i(thread);
2336 C2V_END
2337 
2338 // Attaches a thread started in a JVMCI shared library to a JavaThread and JVMCI runtime.
2339 static void attachSharedLibraryThread(JNIEnv* env, jbyteArray name, jboolean as_daemon) {
2340   JavaVM* javaVM = nullptr;
2341   jint res = env->GetJavaVM(&javaVM);
2342   if (res != JNI_OK) {
2343     JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Error getting shared library JavaVM from shared library JNIEnv: %d", res));
2344   }
2345   extern struct JavaVM_ main_vm;
2346   JNIEnv* hotspotEnv;
2347 
2348   int name_len = env->GetArrayLength(name);
2349   char name_buf[64]; // Cannot use Resource heap as it requires a current thread
2350   int to_copy = MIN2(name_len, (int) sizeof(name_buf) - 1);
2351   env->GetByteArrayRegion(name, 0, to_copy, (jbyte*) name_buf);
2352   name_buf[to_copy] = '\0';
2353   JavaVMAttachArgs attach_args;
2354   attach_args.version = JNI_VERSION_1_2;
2355   attach_args.name = name_buf;
2356   attach_args.group = nullptr;
2357   res = as_daemon ? main_vm.AttachCurrentThreadAsDaemon((void**)&hotspotEnv, &attach_args) :
2358                     main_vm.AttachCurrentThread((void**)&hotspotEnv, &attach_args);
2359   if (res != JNI_OK) {
2360     JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Trying to attach thread returned %d", res));
2361   }
2362   JavaThread* thread = get_current_thread(false);
2363   const char* attach_error;
2364   {
2365     // Transition to VM
2366     JVMCI_VM_ENTRY_MARK
2367     attach_error = JVMCIRuntime::attach_shared_library_thread(thread, javaVM);
2368     // Transition back to Native
2369   }
2370   if (attach_error != nullptr) {
2371     JNI_THROW("attachCurrentThread", InternalError, attach_error);
2372   }
2373 }
2374 
2375 C2V_VMENTRY_PREFIX(jboolean, attachCurrentThread, (JNIEnv* env, jobject c2vm, jbyteArray name, jboolean as_daemon, jlongArray javaVM_info))
2376   if (thread == nullptr) {
2377     attachSharedLibraryThread(env, name, as_daemon);
2378     return true;
2379   }
2380   JVMCITraceMark jtm("attachCurrentThread");
2381   if (thread->jni_environment() == env) {
2382     // Called from HotSpot
2383     C2V_BLOCK(jboolean, attachCurrentThread, (JNIEnv* env, jobject, jboolean))
2384     requireJVMCINativeLibrary(JVMCI_CHECK_0);
2385 
2386     JVMCIRuntime* runtime = JVMCI::compiler_runtime(thread);
2387     JNIEnv* peerJNIEnv;
2388     if (runtime->has_shared_library_javavm()) {
2389       if (runtime->GetEnv(thread, (void**)&peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) {
2390         // Already attached
2391         runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0);
2392         return false;
2393       }
2394     }
2395 
2396     {
2397       // Ensure the JVMCI shared library runtime is initialized.
2398       JVMCIEnv __peer_jvmci_env__(thread, false, __FILE__, __LINE__);
2399       JVMCIEnv* peerJVMCIEnv = &__peer_jvmci_env__;
2400       HandleMark hm(thread);
2401       JVMCIObject receiver = runtime->get_HotSpotJVMCIRuntime(peerJVMCIEnv);
2402       if (peerJVMCIEnv->has_pending_exception()) {
2403         peerJVMCIEnv->describe_pending_exception(true);
2404       }
2405       char* sl_path;
2406       if (JVMCI::get_shared_library(sl_path, false) == nullptr) {
2407         JVMCI_THROW_MSG_0(InternalError, "Error initializing JVMCI runtime");
2408       }
2409     }
2410 
2411     JavaVMAttachArgs attach_args;
2412     attach_args.version = JNI_VERSION_1_2;
2413     attach_args.name = const_cast<char*>(thread->name());
2414     attach_args.group = nullptr;
2415     if (runtime->GetEnv(thread, (void**) &peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) {
2416       return false;
2417     }
2418     jint res = as_daemon ? runtime->AttachCurrentThreadAsDaemon(thread, (void**) &peerJNIEnv, &attach_args) :
2419                            runtime->AttachCurrentThread(thread, (void**) &peerJNIEnv, &attach_args);
2420 
2421     if (res == JNI_OK) {
2422       guarantee(peerJNIEnv != nullptr, "must be");
2423       runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0);
2424       JVMCI_event_1("attached to JavaVM[%d] for JVMCI runtime %d", runtime->get_shared_library_javavm_id(), runtime->id());
2425       return true;
2426     }
2427     JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, attach_args.name));
2428   }
2429   // Called from JVMCI shared library
2430   return false;
2431 C2V_END
2432 
2433 C2V_VMENTRY_PREFIX(jboolean, detachCurrentThread, (JNIEnv* env, jobject c2vm, jboolean release))
2434   if (thread == nullptr) {
2435     // Called from unattached JVMCI shared library thread
2436     JNI_THROW_("detachCurrentThread", IllegalStateException, "Cannot detach non-attached thread", false);
2437   }
2438   JVMCITraceMark jtm("detachCurrentThread");
2439   if (thread->jni_environment() == env) {
2440     // Called from HotSpot
2441     C2V_BLOCK(void, detachCurrentThread, (JNIEnv* env, jobject))
2442     requireJVMCINativeLibrary(JVMCI_CHECK_0);
2443     requireInHotSpot("detachCurrentThread", JVMCI_CHECK_0);
2444     JVMCIRuntime* runtime = thread->libjvmci_runtime();
2445     if (runtime == nullptr || !runtime->has_shared_library_javavm()) {
2446       JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in detachCurrentThread");
2447     }
2448     JNIEnv* peerEnv;
2449 
2450     if (runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) != JNI_OK) {
2451       JVMCI_THROW_MSG_0(IllegalStateException, err_msg("Cannot detach non-attached thread: %s", thread->name()));
2452     }
2453     jint res = runtime->DetachCurrentThread(thread);
2454     if (res != JNI_OK) {
2455       JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, thread->name()));
2456     }
2457     JVMCI_event_1("detached from JavaVM[%d] for JVMCI runtime %d",
2458         runtime->get_shared_library_javavm_id(), runtime->id());
2459     if (release) {
2460       return runtime->detach_thread(thread, "user thread detach");
2461     }
2462   } else {
2463     // Called from attached JVMCI shared library thread
2464     if (release) {
2465       JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread cannot release JVMCI shared library JavaVM", false);
2466     }
2467     JVMCIRuntime* runtime = thread->libjvmci_runtime();
2468     if (runtime == nullptr) {
2469       JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread should have a JVMCI runtime", false);
2470     }
2471     {
2472       // Transition to VM
2473       C2V_BLOCK(jboolean, detachCurrentThread, (JNIEnv* env, jobject))
2474       // Cannot destroy shared library JavaVM as we're about to return to it.
2475       runtime->detach_thread(thread, "shared library thread detach", false);
2476       JVMCI_event_1("detaching JVMCI shared library thread from HotSpot JavaVM");
2477       // Transition back to Native
2478     }
2479     extern struct JavaVM_ main_vm;
2480     jint res = main_vm.DetachCurrentThread();
2481     if (res != JNI_OK) {
2482       JNI_THROW_("detachCurrentThread", InternalError, "Cannot detach non-attached thread", false);
2483     }
2484   }
2485   return false;
2486 C2V_END
2487 
2488 C2V_VMENTRY_0(jlong, translate, (JNIEnv* env, jobject, jobject obj_handle, jboolean callPostTranslation))
2489   requireJVMCINativeLibrary(JVMCI_CHECK_0);
2490   if (obj_handle == NULL) {
2491     return 0L;
2492   }
2493   JVMCIEnv __peer_jvmci_env__(thread, !JVMCIENV->is_hotspot(), __FILE__, __LINE__);
2494   JVMCIEnv* peerEnv = &__peer_jvmci_env__;
2495   JVMCIEnv* thisEnv = JVMCIENV;
2496 
2497   JVMCIObject obj = thisEnv->wrap(obj_handle);
2498   JVMCIObject result;
2499   if (thisEnv->isa_HotSpotResolvedJavaMethodImpl(obj)) {
2500     methodHandle method(THREAD, thisEnv->asMethod(obj));
2501     result = peerEnv->get_jvmci_method(method, JVMCI_CHECK_0);
2502   } else if (thisEnv->isa_HotSpotResolvedObjectTypeImpl(obj)) {
2503     Klass* klass = thisEnv->asKlass(obj);
2504     JVMCIKlassHandle klass_handle(THREAD);
2505     klass_handle = klass;
2506     result = peerEnv->get_jvmci_type(klass_handle, JVMCI_CHECK_0);
2507   } else if (thisEnv->isa_HotSpotResolvedPrimitiveType(obj)) {
2508     BasicType type = JVMCIENV->kindToBasicType(JVMCIENV->get_HotSpotResolvedPrimitiveType_kind(obj), JVMCI_CHECK_0);
2509     result = peerEnv->get_jvmci_primitive_type(type);
2510   } else if (thisEnv->isa_IndirectHotSpotObjectConstantImpl(obj) ||
2511              thisEnv->isa_DirectHotSpotObjectConstantImpl(obj)) {
2512     Handle constant = thisEnv->asConstant(obj, JVMCI_CHECK_0);
2513     result = peerEnv->get_object_constant(constant());
2514   } else if (thisEnv->isa_HotSpotNmethod(obj)) {
2515     if (peerEnv->is_hotspot()) {
2516       nmethod* nm = JVMCIENV->get_nmethod(obj);
2517       if (nm != NULL) {
2518         JVMCINMethodData* data = nm->jvmci_nmethod_data();
2519         if (data != NULL) {
2520           // Only the mirror in the HotSpot heap is accessible
2521           // through JVMCINMethodData
2522           oop nmethod_mirror = data->get_nmethod_mirror(nm, /* phantom_ref */ true);
2523           if (nmethod_mirror != NULL) {
2524             result = HotSpotJVMCI::wrap(nmethod_mirror);
2525           }
2526         }
2527       }
2528     }
2529 
2530     if (result.is_null()) {
2531       JVMCIObject methodObject = thisEnv->get_HotSpotNmethod_method(obj);
2532       methodHandle mh(THREAD, thisEnv->asMethod(methodObject));
2533       jboolean isDefault = thisEnv->get_HotSpotNmethod_isDefault(obj);
2534       jlong compileIdSnapshot = thisEnv->get_HotSpotNmethod_compileIdSnapshot(obj);
2535       JVMCIObject name_string = thisEnv->get_InstalledCode_name(obj);
2536       const char* cstring = name_string.is_null() ? NULL : thisEnv->as_utf8_string(name_string);
2537       // Create a new HotSpotNmethod instance in the peer runtime
2538       result = peerEnv->new_HotSpotNmethod(mh, cstring, isDefault, compileIdSnapshot, JVMCI_CHECK_0);
2539       nmethod* nm = JVMCIENV->get_nmethod(obj);
2540       if (result.is_null()) {
2541         // exception occurred (e.g. OOME) creating a new HotSpotNmethod
2542       } else if (nm == NULL) {
2543         // nmethod must have been unloaded
2544       } else {
2545         // Link the new HotSpotNmethod to the nmethod
2546         peerEnv->initialize_installed_code(result, nm, JVMCI_CHECK_0);
2547         // Only HotSpotNmethod instances in the HotSpot heap are tracked directly by the runtime.
2548         if (peerEnv->is_hotspot()) {
2549           JVMCINMethodData* data = nm->jvmci_nmethod_data();
2550           if (data == NULL) {
2551             JVMCI_THROW_MSG_0(IllegalArgumentException, "Cannot set HotSpotNmethod mirror for default nmethod");
2552           }
2553           if (data->get_nmethod_mirror(nm, /* phantom_ref */ false) != NULL) {
2554             JVMCI_THROW_MSG_0(IllegalArgumentException, "Cannot overwrite existing HotSpotNmethod mirror for nmethod");
2555           }
2556           oop nmethod_mirror = HotSpotJVMCI::resolve(result);
2557           data->set_nmethod_mirror(nm, nmethod_mirror);
2558         }
2559       }
2560     }
2561   } else {
2562     JVMCI_THROW_MSG_0(IllegalArgumentException,
2563                 err_msg("Cannot translate object of type: %s", thisEnv->klass_name(obj)));
2564   }
2565   if (callPostTranslation) {
2566     peerEnv->call_HotSpotJVMCIRuntime_postTranslation(result, JVMCI_CHECK_0);
2567   }
2568   // Propagate any exception that occurred while creating the translated object
2569   if (peerEnv->transfer_pending_exception(thread, thisEnv)) {
2570     return 0L;
2571   }
2572   return (jlong) peerEnv->make_global(result).as_jobject();
2573 }
2574 
2575 C2V_VMENTRY_NULL(jobject, unhand, (JNIEnv* env, jobject, jlong obj_handle))
2576   requireJVMCINativeLibrary(JVMCI_CHECK_NULL);
2577   if (obj_handle == 0L) {
2578     return NULL;
2579   }
2580   jobject global_handle = (jobject) obj_handle;
2581   JVMCIObject global_handle_obj = JVMCIENV->wrap(global_handle);
2582   jobject result = JVMCIENV->make_local(global_handle_obj).as_jobject();
2583 
2584   JVMCIENV->destroy_global(global_handle_obj);
2585   return result;
2586 }
2587 
2588 C2V_VMENTRY(void, updateHotSpotNmethod, (JNIEnv* env, jobject, jobject code_handle))
2589   JVMCIObject code = JVMCIENV->wrap(code_handle);
2590   // Execute this operation for the side effect of updating the InstalledCode state
2591   JVMCIENV->get_nmethod(code);
2592 }
2593 
2594 C2V_VMENTRY_NULL(jbyteArray, getCode, (JNIEnv* env, jobject, jobject code_handle))
2595   JVMCIObject code = JVMCIENV->wrap(code_handle);
2596   CodeBlob* cb = JVMCIENV->get_code_blob(code);
2597   if (cb == NULL) {
2598     return NULL;
2599   }
2600   // Make a resource copy of code before the allocation causes a safepoint
2601   int code_size = cb->code_size();
2602   jbyte* code_bytes = NEW_RESOURCE_ARRAY(jbyte, code_size);
2603   memcpy(code_bytes, (jbyte*) cb->code_begin(), code_size);
2604 
2605   JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL);
2606   JVMCIENV->copy_bytes_from(code_bytes, result, 0, code_size);
2607   return JVMCIENV->get_jbyteArray(result);
2608 }
2609 
2610 C2V_VMENTRY_NULL(jobject, asReflectionExecutable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
2611   requireInHotSpot("asReflectionExecutable", JVMCI_CHECK_NULL);
2612   methodHandle m(THREAD, UNPACK_PAIR(Method, method));
2613   oop executable;
2614   if (m->is_initializer()) {
2615     if (m->is_static_initializer()) {
2616       JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2617           "Cannot create java.lang.reflect.Method for class initializer");
2618     }
2619     executable = Reflection::new_constructor(m, CHECK_NULL);
2620   } else {
2621     executable = Reflection::new_method(m, false, CHECK_NULL);
2622   }
2623   return JNIHandles::make_local(THREAD, executable);
2624 }
2625 
2626 C2V_VMENTRY_NULL(jobject, asReflectionField, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jint index))
2627   requireInHotSpot("asReflectionField", JVMCI_CHECK_NULL);
2628   Klass* klass = UNPACK_PAIR(Klass, klass);
2629   if (!klass->is_instance_klass()) {
2630     JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2631         err_msg("Expected non-primitive type, got %s", klass->external_name()));
2632   }
2633   InstanceKlass* iklass = InstanceKlass::cast(klass);
2634   Array<u2>* fields = iklass->fields();
2635   if (index < 0 ||index > fields->length()) {
2636     JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2637         err_msg("Field index %d out of bounds for %s", index, klass->external_name()));
2638   }
2639   fieldDescriptor fd(iklass, index);
2640   oop reflected = Reflection::new_field(&fd, CHECK_NULL);
2641   return JNIHandles::make_local(THREAD, reflected);
2642 }
2643 
2644 C2V_VMENTRY_NULL(jobjectArray, getFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address, jobjectArray current))
2645   FailedSpeculation* head = *((FailedSpeculation**)(address) failed_speculations_address);
2646   int result_length = 0;
2647   for (FailedSpeculation* fs = head; fs != NULL; fs = fs->next()) {
2648     result_length++;
2649   }
2650   int current_length = 0;
2651   JVMCIObjectArray current_array = NULL;
2652   if (current != NULL) {
2653     current_array = JVMCIENV->wrap(current);
2654     current_length = JVMCIENV->get_length(current_array);
2655     if (current_length == result_length) {
2656       // No new failures
2657       return current;
2658     }
2659   }
2660   JVMCIObjectArray result = JVMCIENV->new_byte_array_array(result_length, JVMCI_CHECK_NULL);
2661   int result_index = 0;
2662   for (FailedSpeculation* fs = head; result_index < result_length; fs = fs->next()) {
2663     assert(fs != NULL, "npe");
2664     JVMCIPrimitiveArray entry;
2665     if (result_index < current_length) {
2666       entry = (JVMCIPrimitiveArray) JVMCIENV->get_object_at(current_array, result_index);
2667     } else {
2668       entry = JVMCIENV->new_byteArray(fs->data_len(), JVMCI_CHECK_NULL);
2669       JVMCIENV->copy_bytes_from((jbyte*) fs->data(), entry, 0, fs->data_len());
2670     }
2671     JVMCIENV->put_object_at(result, result_index++, entry);
2672   }
2673   return JVMCIENV->get_jobjectArray(result);
2674 }
2675 
2676 C2V_VMENTRY_0(jlong, getFailedSpeculationsAddress, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
2677   methodHandle method(THREAD, UNPACK_PAIR(Method, method));
2678   MethodData* method_data = method->method_data();
2679   if (method_data == NULL) {
2680     ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
2681     method_data = MethodData::allocate(loader_data, method, CHECK_0);
2682     method->set_method_data(method_data);
2683   }
2684   return (jlong) method_data->get_failed_speculations_address();
2685 }
2686 
2687 C2V_VMENTRY(void, releaseFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address))
2688   FailedSpeculation::free_failed_speculations((FailedSpeculation**)(address) failed_speculations_address);
2689 }
2690 
2691 C2V_VMENTRY_0(jboolean, addFailedSpeculation, (JNIEnv* env, jobject, jlong failed_speculations_address, jbyteArray speculation_obj))
2692   JVMCIPrimitiveArray speculation_handle = JVMCIENV->wrap(speculation_obj);
2693   int speculation_len = JVMCIENV->get_length(speculation_handle);
2694   char* speculation = NEW_RESOURCE_ARRAY(char, speculation_len);
2695   JVMCIENV->copy_bytes_to(speculation_handle, (jbyte*) speculation, 0, speculation_len);
2696   return FailedSpeculation::add_failed_speculation(NULL, (FailedSpeculation**)(address) failed_speculations_address, (address) speculation, speculation_len);
2697 }
2698 
2699 C2V_VMENTRY(void, callSystemExit, (JNIEnv* env, jobject, jint status))
2700   JavaValue result(T_VOID);
2701   JavaCallArguments jargs(1);
2702   jargs.push_int(status);
2703   JavaCalls::call_static(&result,
2704                        vmClasses::System_klass(),
2705                        vmSymbols::exit_method_name(),
2706                        vmSymbols::int_void_signature(),
2707                        &jargs,
2708                        CHECK);
2709 }
2710 
2711 C2V_VMENTRY_0(jlong, ticksNow, (JNIEnv* env, jobject))
2712   return CompilerEvent::ticksNow();
2713 }
2714 
2715 C2V_VMENTRY_0(jint, registerCompilerPhase, (JNIEnv* env, jobject, jstring jphase_name))
2716 #if INCLUDE_JFR
2717   JVMCIObject phase_name = JVMCIENV->wrap(jphase_name);
2718   const char *name = JVMCIENV->as_utf8_string(phase_name);
2719   return CompilerEvent::PhaseEvent::get_phase_id(name, true, true, true);
2720 #else
2721   return -1;
2722 #endif // !INCLUDE_JFR
2723 }
2724 
2725 C2V_VMENTRY(void, notifyCompilerPhaseEvent, (JNIEnv* env, jobject, jlong startTime, jint phase, jint compileId, jint level))
2726   EventCompilerPhase event;
2727   if (event.should_commit()) {
2728     CompilerEvent::PhaseEvent::post(event, startTime, phase, compileId, level);
2729   }
2730 }
2731 
2732 C2V_VMENTRY(void, notifyCompilerInliningEvent, (JNIEnv* env, jobject, jint compileId, ARGUMENT_PAIR(caller), ARGUMENT_PAIR(callee), jboolean succeeded, jstring jmessage, jint bci))
2733   EventCompilerInlining event;
2734   if (event.should_commit()) {
2735     Method* caller = UNPACK_PAIR(Method, caller);
2736     Method* callee = UNPACK_PAIR(Method, callee);
2737     JVMCIObject message = JVMCIENV->wrap(jmessage);
2738     CompilerEvent::InlineEvent::post(event, compileId, caller, callee, succeeded, JVMCIENV->as_utf8_string(message), bci);
2739   }
2740 }
2741 
2742 C2V_VMENTRY(void, setThreadLocalObject, (JNIEnv* env, jobject, jint id, jobject value))
2743   requireInHotSpot("setThreadLocalObject", JVMCI_CHECK);
2744   if (id == 0) {
2745     thread->set_jvmci_reserved_oop0(JNIHandles::resolve(value));
2746     return;
2747   }
2748   THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
2749             err_msg("%d is not a valid thread local id", id));
2750 }
2751 
2752 C2V_VMENTRY_NULL(jobject, getThreadLocalObject, (JNIEnv* env, jobject, jint id))
2753   requireInHotSpot("getThreadLocalObject", JVMCI_CHECK_NULL);
2754   if (id == 0) {
2755     return JNIHandles::make_local(thread->get_jvmci_reserved_oop0());
2756   }
2757   THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
2758               err_msg("%d is not a valid thread local id", id));
2759 }
2760 
2761 C2V_VMENTRY(void, setThreadLocalLong, (JNIEnv* env, jobject, jint id, jlong value))
2762   requireInHotSpot("setThreadLocalLong", JVMCI_CHECK);
2763   if (id == 0) {
2764     thread->set_jvmci_reserved0(value);
2765   } else if (id == 1) {
2766     thread->set_jvmci_reserved1(value);
2767   } else {
2768     THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
2769               err_msg("%d is not a valid thread local id", id));
2770   }
2771 }
2772 
2773 C2V_VMENTRY_0(jlong, getThreadLocalLong, (JNIEnv* env, jobject, jint id))
2774   requireInHotSpot("getThreadLocalLong", JVMCI_CHECK_0);
2775   if (id == 0) {
2776     return thread->get_jvmci_reserved0();
2777   } else if (id == 1) {
2778     return thread->get_jvmci_reserved1();
2779   } else {
2780     THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
2781                 err_msg("%d is not a valid thread local id", id));
2782   }
2783 }
2784 
2785 #define CC (char*)  /*cast a literal from (const char*)*/
2786 #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &(c2v_ ## f))
2787 
2788 #define STRING                  "Ljava/lang/String;"
2789 #define OBJECT                  "Ljava/lang/Object;"
2790 #define CLASS                   "Ljava/lang/Class;"
2791 #define OBJECTCONSTANT          "Ljdk/vm/ci/hotspot/HotSpotObjectConstantImpl;"
2792 #define EXECUTABLE              "Ljava/lang/reflect/Executable;"
2793 #define STACK_TRACE_ELEMENT     "Ljava/lang/StackTraceElement;"
2794 #define INSTALLED_CODE          "Ljdk/vm/ci/code/InstalledCode;"
2795 #define BYTECODE_FRAME          "Ljdk/vm/ci/code/BytecodeFrame;"
2796 #define JAVACONSTANT            "Ljdk/vm/ci/meta/JavaConstant;"
2797 #define INSPECTED_FRAME_VISITOR "Ljdk/vm/ci/code/stack/InspectedFrameVisitor;"
2798 #define RESOLVED_METHOD         "Ljdk/vm/ci/meta/ResolvedJavaMethod;"
2799 #define HS_RESOLVED_TYPE        "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaType;"
2800 #define HS_INSTALLED_CODE       "Ljdk/vm/ci/hotspot/HotSpotInstalledCode;"
2801 #define HS_NMETHOD              "Ljdk/vm/ci/hotspot/HotSpotNmethod;"
2802 #define HS_COMPILED_CODE        "Ljdk/vm/ci/hotspot/HotSpotCompiledCode;"
2803 #define HS_CONFIG               "Ljdk/vm/ci/hotspot/HotSpotVMConfig;"
2804 #define HS_STACK_FRAME_REF      "Ljdk/vm/ci/hotspot/HotSpotStackFrameReference;"
2805 #define HS_SPECULATION_LOG      "Ljdk/vm/ci/hotspot/HotSpotSpeculationLog;"
2806 #define REFLECTION_EXECUTABLE   "Ljava/lang/reflect/Executable;"
2807 #define REFLECTION_FIELD        "Ljava/lang/reflect/Field;"
2808 
2809 // Types wrapping VM pointers. The ...2 macro is for a pair: (wrapper, pointer)
2810 #define HS_METHOD               "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;"
2811 #define HS_METHOD2              "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;J"
2812 #define HS_KLASS                "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;"
2813 #define HS_KLASS2               "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;J"
2814 #define HS_CONSTANT_POOL        "Ljdk/vm/ci/hotspot/HotSpotConstantPool;"
2815 #define HS_CONSTANT_POOL2       "Ljdk/vm/ci/hotspot/HotSpotConstantPool;J"
2816 
2817 JNINativeMethod CompilerToVM::methods[] = {
2818   {CC "getBytecode",                                  CC "(" HS_METHOD2 ")[B",                                                              FN_PTR(getBytecode)},
2819   {CC "getExceptionTableStart",                       CC "(" HS_METHOD2 ")J",                                                               FN_PTR(getExceptionTableStart)},
2820   {CC "getExceptionTableLength",                      CC "(" HS_METHOD2 ")I",                                                               FN_PTR(getExceptionTableLength)},
2821   {CC "findUniqueConcreteMethod",                     CC "(" HS_KLASS2 HS_METHOD2 ")" HS_METHOD,                                            FN_PTR(findUniqueConcreteMethod)},
2822   {CC "getImplementor",                               CC "(" HS_KLASS2 ")" HS_KLASS,                                                        FN_PTR(getImplementor)},
2823   {CC "getStackTraceElement",                         CC "(" HS_METHOD2 "I)" STACK_TRACE_ELEMENT,                                           FN_PTR(getStackTraceElement)},
2824   {CC "methodIsIgnoredBySecurityStackWalk",           CC "(" HS_METHOD2 ")Z",                                                               FN_PTR(methodIsIgnoredBySecurityStackWalk)},
2825   {CC "setNotInlinableOrCompilable",                  CC "(" HS_METHOD2 ")V",                                                               FN_PTR(setNotInlinableOrCompilable)},
2826   {CC "isCompilable",                                 CC "(" HS_METHOD2 ")Z",                                                               FN_PTR(isCompilable)},
2827   {CC "hasNeverInlineDirective",                      CC "(" HS_METHOD2 ")Z",                                                               FN_PTR(hasNeverInlineDirective)},
2828   {CC "shouldInlineMethod",                           CC "(" HS_METHOD2 ")Z",                                                               FN_PTR(shouldInlineMethod)},
2829   {CC "lookupType",                                   CC "(" STRING HS_KLASS2 "Z)" HS_RESOLVED_TYPE,                                        FN_PTR(lookupType)},
2830   {CC "getArrayType",                                 CC "(C" HS_KLASS2 ")" HS_KLASS,                                                       FN_PTR(getArrayType)},
2831   {CC "lookupClass",                                  CC "(" CLASS ")" HS_RESOLVED_TYPE,                                                    FN_PTR(lookupClass)},
2832   {CC "lookupNameInPool",                             CC "(" HS_CONSTANT_POOL2 "I)" STRING,                                                 FN_PTR(lookupNameInPool)},
2833   {CC "lookupNameAndTypeRefIndexInPool",              CC "(" HS_CONSTANT_POOL2 "I)I",                                                       FN_PTR(lookupNameAndTypeRefIndexInPool)},
2834   {CC "lookupSignatureInPool",                        CC "(" HS_CONSTANT_POOL2 "I)" STRING,                                                 FN_PTR(lookupSignatureInPool)},
2835   {CC "lookupKlassRefIndexInPool",                    CC "(" HS_CONSTANT_POOL2 "I)I",                                                       FN_PTR(lookupKlassRefIndexInPool)},
2836   {CC "lookupKlassInPool",                            CC "(" HS_CONSTANT_POOL2 "I)Ljava/lang/Object;",                                      FN_PTR(lookupKlassInPool)},
2837   {CC "lookupAppendixInPool",                         CC "(" HS_CONSTANT_POOL2 "I)" OBJECTCONSTANT,                                         FN_PTR(lookupAppendixInPool)},
2838   {CC "lookupMethodInPool",                           CC "(" HS_CONSTANT_POOL2 "IB" HS_METHOD2 ")" HS_METHOD,                               FN_PTR(lookupMethodInPool)},
2839   {CC "constantPoolRemapInstructionOperandFromCache", CC "(" HS_CONSTANT_POOL2 "I)I",                                                       FN_PTR(constantPoolRemapInstructionOperandFromCache)},
2840   {CC "resolveBootstrapMethod",                       CC "(" HS_CONSTANT_POOL2 "I)[" OBJECT,                                                FN_PTR(resolveBootstrapMethod)},
2841   {CC "getUncachedStringInPool",                      CC "(" HS_CONSTANT_POOL2 "I)" JAVACONSTANT,                                           FN_PTR(getUncachedStringInPool)},
2842   {CC "resolvePossiblyCachedConstantInPool",          CC "(" HS_CONSTANT_POOL2 "I)" JAVACONSTANT,                                           FN_PTR(resolvePossiblyCachedConstantInPool)},
2843   {CC "resolveTypeInPool",                            CC "(" HS_CONSTANT_POOL2 "I)" HS_KLASS,                                               FN_PTR(resolveTypeInPool)},
2844   {CC "resolveFieldInPool",                           CC "(" HS_CONSTANT_POOL2 "I" HS_METHOD2 "B[I)" HS_KLASS,                              FN_PTR(resolveFieldInPool)},
2845   {CC "resolveInvokeDynamicInPool",                   CC "(" HS_CONSTANT_POOL2 "I)V",                                                       FN_PTR(resolveInvokeDynamicInPool)},
2846   {CC "resolveInvokeHandleInPool",                    CC "(" HS_CONSTANT_POOL2 "I)V",                                                       FN_PTR(resolveInvokeHandleInPool)},
2847   {CC "isResolvedInvokeHandleInPool",                 CC "(" HS_CONSTANT_POOL2 "I)I",                                                       FN_PTR(isResolvedInvokeHandleInPool)},
2848   {CC "resolveMethod",                                CC "(" HS_KLASS2 HS_METHOD2 HS_KLASS2 ")" HS_METHOD,                                  FN_PTR(resolveMethod)},
2849   {CC "getSignaturePolymorphicHolders",               CC "()[" STRING,                                                                      FN_PTR(getSignaturePolymorphicHolders)},
2850   {CC "getVtableIndexForInterfaceMethod",             CC "(" HS_KLASS2 HS_METHOD2 ")I",                                                     FN_PTR(getVtableIndexForInterfaceMethod)},
2851   {CC "getClassInitializer",                          CC "(" HS_KLASS2 ")" HS_METHOD,                                                       FN_PTR(getClassInitializer)},
2852   {CC "hasFinalizableSubclass",                       CC "(" HS_KLASS2 ")Z",                                                                FN_PTR(hasFinalizableSubclass)},
2853   {CC "getMaxCallTargetOffset",                       CC "(J)J",                                                                            FN_PTR(getMaxCallTargetOffset)},
2854   {CC "asResolvedJavaMethod",                         CC "(" EXECUTABLE ")" HS_METHOD,                                                      FN_PTR(asResolvedJavaMethod)},
2855   {CC "getResolvedJavaMethod",                        CC "(" OBJECTCONSTANT "J)" HS_METHOD,                                                 FN_PTR(getResolvedJavaMethod)},
2856   {CC "getConstantPool",                              CC "(" OBJECT "JZ)" HS_CONSTANT_POOL,                                                 FN_PTR(getConstantPool)},
2857   {CC "getResolvedJavaType0",                         CC "(Ljava/lang/Object;JZ)" HS_KLASS,                                                 FN_PTR(getResolvedJavaType0)},
2858   {CC "readConfiguration",                            CC "()[" OBJECT,                                                                      FN_PTR(readConfiguration)},
2859   {CC "installCode0",                                 CC "(JJZ" HS_COMPILED_CODE "[" OBJECT INSTALLED_CODE "J[B)I",                         FN_PTR(installCode0)},
2860   {CC "getInstallCodeFlags",                          CC "()I",                                                                             FN_PTR(getInstallCodeFlags)},
2861   {CC "resetCompilationStatistics",                   CC "()V",                                                                             FN_PTR(resetCompilationStatistics)},
2862   {CC "disassembleCodeBlob",                          CC "(" INSTALLED_CODE ")" STRING,                                                     FN_PTR(disassembleCodeBlob)},
2863   {CC "executeHotSpotNmethod",                        CC "([" OBJECT HS_NMETHOD ")" OBJECT,                                                 FN_PTR(executeHotSpotNmethod)},
2864   {CC "getLineNumberTable",                           CC "(" HS_METHOD2 ")[J",                                                              FN_PTR(getLineNumberTable)},
2865   {CC "getLocalVariableTableStart",                   CC "(" HS_METHOD2 ")J",                                                               FN_PTR(getLocalVariableTableStart)},
2866   {CC "getLocalVariableTableLength",                  CC "(" HS_METHOD2 ")I",                                                               FN_PTR(getLocalVariableTableLength)},
2867   {CC "reprofile",                                    CC "(" HS_METHOD2 ")V",                                                               FN_PTR(reprofile)},
2868   {CC "invalidateHotSpotNmethod",                     CC "(" HS_NMETHOD "Z)V",                                                              FN_PTR(invalidateHotSpotNmethod)},
2869   {CC "collectCounters",                              CC "()[J",                                                                            FN_PTR(collectCounters)},
2870   {CC "getCountersSize",                              CC "()I",                                                                             FN_PTR(getCountersSize)},
2871   {CC "setCountersSize",                              CC "(I)Z",                                                                            FN_PTR(setCountersSize)},
2872   {CC "allocateCompileId",                            CC "(" HS_METHOD2 "I)I",                                                              FN_PTR(allocateCompileId)},
2873   {CC "isMature",                                     CC "(J)Z",                                                                            FN_PTR(isMature)},
2874   {CC "hasCompiledCodeForOSR",                        CC "(" HS_METHOD2 "II)Z",                                                             FN_PTR(hasCompiledCodeForOSR)},
2875   {CC "getSymbol",                                    CC "(J)" STRING,                                                                      FN_PTR(getSymbol)},
2876   {CC "getSignatureName",                             CC "(J)" STRING,                                                                      FN_PTR(getSignatureName)},
2877   {CC "iterateFrames",                                CC "([" RESOLVED_METHOD "[" RESOLVED_METHOD "I" INSPECTED_FRAME_VISITOR ")" OBJECT,   FN_PTR(iterateFrames)},
2878   {CC "materializeVirtualObjects",                    CC "(" HS_STACK_FRAME_REF "Z)V",                                                      FN_PTR(materializeVirtualObjects)},
2879   {CC "shouldDebugNonSafepoints",                     CC "()Z",                                                                             FN_PTR(shouldDebugNonSafepoints)},
2880   {CC "writeDebugOutput",                             CC "(JIZ)V",                                                                          FN_PTR(writeDebugOutput)},
2881   {CC "flushDebugOutput",                             CC "()V",                                                                             FN_PTR(flushDebugOutput)},
2882   {CC "methodDataProfileDataSize",                    CC "(JI)I",                                                                           FN_PTR(methodDataProfileDataSize)},
2883   {CC "interpreterFrameSize",                         CC "(" BYTECODE_FRAME ")I",                                                           FN_PTR(interpreterFrameSize)},
2884   {CC "compileToBytecode",                            CC "(" OBJECTCONSTANT ")V",                                                           FN_PTR(compileToBytecode)},
2885   {CC "getFlagValue",                                 CC "(" STRING ")" OBJECT,                                                             FN_PTR(getFlagValue)},
2886   {CC "getInterfaces",                                CC "(" HS_KLASS2 ")[" HS_KLASS,                                                       FN_PTR(getInterfaces)},
2887   {CC "getComponentType",                             CC "(" HS_KLASS2 ")" HS_RESOLVED_TYPE,                                                FN_PTR(getComponentType)},
2888   {CC "ensureInitialized",                            CC "(" HS_KLASS2 ")V",                                                                FN_PTR(ensureInitialized)},
2889   {CC "ensureLinked",                                 CC "(" HS_KLASS2 ")V",                                                                FN_PTR(ensureLinked)},
2890   {CC "getIdentityHashCode",                          CC "(" OBJECTCONSTANT ")I",                                                           FN_PTR(getIdentityHashCode)},
2891   {CC "isInternedString",                             CC "(" OBJECTCONSTANT ")Z",                                                           FN_PTR(isInternedString)},
2892   {CC "unboxPrimitive",                               CC "(" OBJECTCONSTANT ")" OBJECT,                                                     FN_PTR(unboxPrimitive)},
2893   {CC "boxPrimitive",                                 CC "(" OBJECT ")" OBJECTCONSTANT,                                                     FN_PTR(boxPrimitive)},
2894   {CC "getDeclaredConstructors",                      CC "(" HS_KLASS2 ")[" RESOLVED_METHOD,                                                FN_PTR(getDeclaredConstructors)},
2895   {CC "getDeclaredMethods",                           CC "(" HS_KLASS2 ")[" RESOLVED_METHOD,                                                FN_PTR(getDeclaredMethods)},
2896   {CC "readStaticFieldValue",                         CC "(" HS_KLASS2 "JC)" JAVACONSTANT,                                                  FN_PTR(readStaticFieldValue)},
2897   {CC "readFieldValue",                               CC "(" OBJECTCONSTANT HS_KLASS2 "JC)" JAVACONSTANT,                                   FN_PTR(readFieldValue)},
2898   {CC "isInstance",                                   CC "(" HS_KLASS2 OBJECTCONSTANT ")Z",                                                 FN_PTR(isInstance)},
2899   {CC "isAssignableFrom",                             CC "(" HS_KLASS2 HS_KLASS2 ")Z",                                                      FN_PTR(isAssignableFrom)},
2900   {CC "isTrustedForIntrinsics",                       CC "(" HS_KLASS2 ")Z",                                                                FN_PTR(isTrustedForIntrinsics)},
2901   {CC "asJavaType",                                   CC "(" OBJECTCONSTANT ")" HS_RESOLVED_TYPE,                                           FN_PTR(asJavaType)},
2902   {CC "asString",                                     CC "(" OBJECTCONSTANT ")" STRING,                                                     FN_PTR(asString)},
2903   {CC "equals",                                       CC "(" OBJECTCONSTANT "J" OBJECTCONSTANT "J)Z",                                       FN_PTR(equals)},
2904   {CC "getJavaMirror",                                CC "(" HS_KLASS2 ")" OBJECTCONSTANT,                                                  FN_PTR(getJavaMirror)},
2905   {CC "getArrayLength",                               CC "(" OBJECTCONSTANT ")I",                                                           FN_PTR(getArrayLength)},
2906   {CC "readArrayElement",                             CC "(" OBJECTCONSTANT "I)Ljava/lang/Object;",                                         FN_PTR(readArrayElement)},
2907   {CC "arrayBaseOffset",                              CC "(C)I",                                                                            FN_PTR(arrayBaseOffset)},
2908   {CC "arrayIndexScale",                              CC "(C)I",                                                                            FN_PTR(arrayIndexScale)},
2909   {CC "releaseClearedOopHandles",                     CC "()V",                                                                             FN_PTR(releaseClearedOopHandles)},
2910   {CC "registerNativeMethods",                        CC "(" CLASS ")[J",                                                                   FN_PTR(registerNativeMethods)},
2911   {CC "isCurrentThreadAttached",                      CC "()Z",                                                                             FN_PTR(isCurrentThreadAttached)},
2912   {CC "getCurrentJavaThread",                         CC "()J",                                                                             FN_PTR(getCurrentJavaThread)},
2913   {CC "attachCurrentThread",                          CC "([BZ[J)Z",                                                                        FN_PTR(attachCurrentThread)},
2914   {CC "detachCurrentThread",                          CC "(Z)Z",                                                                            FN_PTR(detachCurrentThread)},
2915   {CC "translate",                                    CC "(" OBJECT "Z)J",                                                                  FN_PTR(translate)},
2916   {CC "unhand",                                       CC "(J)" OBJECT,                                                                      FN_PTR(unhand)},
2917   {CC "updateHotSpotNmethod",                         CC "(" HS_NMETHOD ")V",                                                               FN_PTR(updateHotSpotNmethod)},
2918   {CC "getCode",                                      CC "(" HS_INSTALLED_CODE ")[B",                                                       FN_PTR(getCode)},
2919   {CC "asReflectionExecutable",                       CC "(" HS_METHOD2 ")" REFLECTION_EXECUTABLE,                                          FN_PTR(asReflectionExecutable)},
2920   {CC "asReflectionField",                            CC "(" HS_KLASS2 "I)" REFLECTION_FIELD,                                               FN_PTR(asReflectionField)},
2921   {CC "getFailedSpeculations",                        CC "(J[[B)[[B",                                                                       FN_PTR(getFailedSpeculations)},
2922   {CC "getFailedSpeculationsAddress",                 CC "(" HS_METHOD2 ")J",                                                               FN_PTR(getFailedSpeculationsAddress)},
2923   {CC "releaseFailedSpeculations",                    CC "(J)V",                                                                            FN_PTR(releaseFailedSpeculations)},
2924   {CC "addFailedSpeculation",                         CC "(J[B)Z",                                                                          FN_PTR(addFailedSpeculation)},
2925   {CC "callSystemExit",                               CC "(I)V",                                                                            FN_PTR(callSystemExit)},
2926   {CC "ticksNow",                                     CC "()J",                                                                             FN_PTR(ticksNow)},
2927   {CC "getThreadLocalObject",                         CC "(I)" OBJECT,                                                                      FN_PTR(getThreadLocalObject)},
2928   {CC "setThreadLocalObject",                         CC "(I" OBJECT ")V",                                                                  FN_PTR(setThreadLocalObject)},
2929   {CC "getThreadLocalLong",                           CC "(I)J",                                                                            FN_PTR(getThreadLocalLong)},
2930   {CC "setThreadLocalLong",                           CC "(IJ)V",                                                                           FN_PTR(setThreadLocalLong)},
2931   {CC "registerCompilerPhase",                        CC "(" STRING ")I",                                                                   FN_PTR(registerCompilerPhase)},
2932   {CC "notifyCompilerPhaseEvent",                     CC "(JIII)V",                                                                         FN_PTR(notifyCompilerPhaseEvent)},
2933   {CC "notifyCompilerInliningEvent",                  CC "(I" HS_METHOD2 HS_METHOD2 "ZLjava/lang/String;I)V",                               FN_PTR(notifyCompilerInliningEvent)},
2934 };
2935 
2936 int CompilerToVM::methods_count() {
2937   return sizeof(methods) / sizeof(JNINativeMethod);
2938 }