1 /*
2 * Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 #include "classfile/classLoaderData.inline.hpp"
25 #include "classfile/javaClasses.inline.hpp"
26 #include "classfile/stringTable.hpp"
27 #include "classfile/symbolTable.hpp"
28 #include "classfile/systemDictionary.hpp"
29 #include "classfile/vmClasses.hpp"
30 #include "code/scopeDesc.hpp"
31 #include "compiler/compileBroker.hpp"
32 #include "compiler/compilerEvent.hpp"
33 #include "compiler/compilerOracle.hpp"
34 #include "compiler/disassembler.hpp"
35 #include "compiler/oopMap.hpp"
36 #include "interpreter/bytecodeStream.hpp"
37 #include "interpreter/linkResolver.hpp"
38 #include "interpreter/oopMapCache.hpp"
39 #include "jfr/jfrEvents.hpp"
40 #include "jvmci/jvmciCodeInstaller.hpp"
41 #include "jvmci/jvmciCompilerToVM.hpp"
42 #include "jvmci/jvmciRuntime.hpp"
43 #include "logging/log.hpp"
44 #include "logging/logTag.hpp"
45 #include "memory/oopFactory.hpp"
46 #include "memory/universe.hpp"
47 #include "oops/constantPool.inline.hpp"
48 #include "oops/instanceKlass.inline.hpp"
49 #include "oops/instanceMirrorKlass.hpp"
50 #include "oops/method.inline.hpp"
51 #include "oops/objArrayKlass.inline.hpp"
52 #include "oops/trainingData.hpp"
53 #include "oops/typeArrayOop.inline.hpp"
54 #include "prims/jvmtiExport.hpp"
55 #include "prims/methodHandles.hpp"
56 #include "prims/nativeLookup.hpp"
57 #include "runtime/arguments.hpp"
58 #include "runtime/atomic.hpp"
59 #include "runtime/deoptimization.hpp"
60 #include "runtime/fieldDescriptor.inline.hpp"
61 #include "runtime/frame.inline.hpp"
62 #include "runtime/globals_extension.hpp"
63 #include "runtime/interfaceSupport.inline.hpp"
64 #include "runtime/jniHandles.inline.hpp"
65 #include "runtime/keepStackGCProcessed.hpp"
66 #include "runtime/reflection.hpp"
67 #include "runtime/stackFrameStream.inline.hpp"
68 #include "runtime/timerTrace.hpp"
69 #include "runtime/vframe.inline.hpp"
70 #include "runtime/vframe_hp.hpp"
71 #if INCLUDE_JFR
72 #include "jfr/jfr.hpp"
73 #endif
74
75 JVMCIKlassHandle::JVMCIKlassHandle(Thread* thread, Klass* klass) {
76 _thread = thread;
77 _klass = klass;
78 if (klass != nullptr) {
79 _holder = Handle(_thread, klass->klass_holder());
80 }
81 }
82
83 JVMCIKlassHandle& JVMCIKlassHandle::operator=(Klass* klass) {
84 _klass = klass;
85 if (klass != nullptr) {
86 _holder = Handle(_thread, klass->klass_holder());
87 }
88 return *this;
89 }
90
91 static void requireInHotSpot(const char* caller, JVMCI_TRAPS) {
92 if (!JVMCIENV->is_hotspot()) {
93 JVMCI_THROW_MSG(IllegalStateException, err_msg("Cannot call %s from JVMCI shared library", caller));
94 }
95 }
96
97 static void requireNotInHotSpot(const char* caller, JVMCI_TRAPS) {
98 if (JVMCIENV->is_hotspot()) {
99 JVMCI_THROW_MSG(IllegalStateException, err_msg("Cannot call %s from HotSpot", caller));
100 }
101 }
102
103 class JVMCITraceMark : public StackObj {
104 const char* _msg;
105 public:
106 JVMCITraceMark(const char* msg) {
107 _msg = msg;
108 JVMCI_event_2("Enter %s", _msg);
109 }
110 ~JVMCITraceMark() {
111 JVMCI_event_2(" Exit %s", _msg);
112 }
113 };
114
115 class JavaArgumentUnboxer : public SignatureIterator {
116 protected:
117 JavaCallArguments* _jca;
118 arrayOop _args;
119 int _index;
120
121 Handle next_arg(BasicType expectedType);
122
123 public:
124 JavaArgumentUnboxer(Symbol* signature,
125 JavaCallArguments* jca,
126 arrayOop args,
127 bool is_static)
128 : SignatureIterator(signature)
129 {
130 this->_return_type = T_ILLEGAL;
131 _jca = jca;
132 _index = 0;
133 _args = args;
134 if (!is_static) {
135 _jca->push_oop(next_arg(T_OBJECT));
136 }
137 do_parameters_on(this);
138 assert(_index == args->length(), "arg count mismatch with signature");
139 }
140
141 private:
142 friend class SignatureIterator; // so do_parameters_on can call do_type
143 void do_type(BasicType type) {
144 if (is_reference_type(type)) {
145 _jca->push_oop(next_arg(T_OBJECT));
146 return;
147 }
148 Handle arg = next_arg(type);
149 int box_offset = java_lang_boxing_object::value_offset(type);
150 switch (type) {
151 case T_BOOLEAN: _jca->push_int(arg->bool_field(box_offset)); break;
152 case T_CHAR: _jca->push_int(arg->char_field(box_offset)); break;
153 case T_SHORT: _jca->push_int(arg->short_field(box_offset)); break;
154 case T_BYTE: _jca->push_int(arg->byte_field(box_offset)); break;
155 case T_INT: _jca->push_int(arg->int_field(box_offset)); break;
156 case T_LONG: _jca->push_long(arg->long_field(box_offset)); break;
157 case T_FLOAT: _jca->push_float(arg->float_field(box_offset)); break;
158 case T_DOUBLE: _jca->push_double(arg->double_field(box_offset)); break;
159 default: ShouldNotReachHere();
160 }
161 }
162 };
163
164 Handle JavaArgumentUnboxer::next_arg(BasicType expectedType) {
165 assert(_index < _args->length(), "out of bounds");
166 oop arg=((objArrayOop) (_args))->obj_at(_index++);
167 assert(expectedType == T_OBJECT || java_lang_boxing_object::is_instance(arg, expectedType), "arg type mismatch");
168 return Handle(Thread::current(), arg);
169 }
170
171 // Bring the JVMCI compiler thread into the VM state.
172 #define JVMCI_VM_ENTRY_MARK \
173 MACOS_AARCH64_ONLY(ThreadWXEnable __wx(WXWrite, thread)); \
174 ThreadInVMfromNative __tiv(thread); \
175 HandleMarkCleaner __hm(thread); \
176 JavaThread* THREAD = thread; \
177 DEBUG_ONLY(VMNativeEntryWrapper __vew;)
178
179 // Native method block that transitions current thread to '_thread_in_vm'.
180 // Note: CompilerThreadCanCallJava must precede JVMCIENV_FROM_JNI so that
181 // the translation of an uncaught exception in the JVMCIEnv does not make
182 // a Java call when __is_hotspot == false.
183 #define C2V_BLOCK(result_type, name, signature) \
184 JVMCI_VM_ENTRY_MARK; \
185 ResourceMark rm; \
186 bool __is_hotspot = env == thread->jni_environment(); \
187 bool __block_can_call_java = __is_hotspot || !thread->is_Compiler_thread() || CompilerThread::cast(thread)->can_call_java(); \
188 CompilerThreadCanCallJava ccj(thread, __block_can_call_java); \
189 JVMCIENV_FROM_JNI(JVMCI::compilation_tick(thread), env); \
190
191 // Entry to native method implementation that transitions
192 // current thread to '_thread_in_vm'.
193 #define C2V_VMENTRY(result_type, name, signature) \
194 result_type JNICALL c2v_ ## name signature { \
195 JavaThread* thread = JavaThread::current_or_null(); \
196 if (thread == nullptr) { \
197 env->ThrowNew(JNIJVMCI::InternalError::clazz(), \
198 err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
199 return; \
200 } \
201 C2V_BLOCK(result_type, name, signature) \
202 JVMCITraceMark jtm("CompilerToVM::" #name);
203
204 #define C2V_VMENTRY_(result_type, name, signature, result) \
205 result_type JNICALL c2v_ ## name signature { \
206 JavaThread* thread = JavaThread::current_or_null(); \
207 if (thread == nullptr) { \
208 env->ThrowNew(JNIJVMCI::InternalError::clazz(), \
209 err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
210 return result; \
211 } \
212 C2V_BLOCK(result_type, name, signature) \
213 JVMCITraceMark jtm("CompilerToVM::" #name);
214
215 #define C2V_VMENTRY_NULL(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, nullptr)
216 #define C2V_VMENTRY_0(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, 0)
217
218 // Entry to native method implementation that does not transition
219 // current thread to '_thread_in_vm'.
220 #define C2V_VMENTRY_PREFIX(result_type, name, signature) \
221 result_type JNICALL c2v_ ## name signature { \
222 JavaThread* thread = JavaThread::current_or_null();
223
224 #define C2V_END }
225
226 #define JNI_THROW(caller, name, msg) do { \
227 jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg); \
228 if (__throw_res != JNI_OK) { \
229 JVMCI_event_1("Throwing " #name " in " caller " returned %d", __throw_res); \
230 } \
231 return; \
232 } while (0);
233
234 #define JNI_THROW_(caller, name, msg, result) do { \
235 jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg); \
236 if (__throw_res != JNI_OK) { \
237 JVMCI_event_1("Throwing " #name " in " caller " returned %d", __throw_res); \
238 } \
239 return result; \
240 } while (0)
241
242 jobjectArray readConfiguration0(JNIEnv *env, JVMCI_TRAPS);
243
244 C2V_VMENTRY_NULL(jobjectArray, readConfiguration, (JNIEnv* env))
245 jobjectArray config = readConfiguration0(env, JVMCI_CHECK_NULL);
246 return config;
247 }
248
249 C2V_VMENTRY_NULL(jobject, getFlagValue, (JNIEnv* env, jobject c2vm, jobject name_handle))
250 #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();
251 #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();
252 JVMCIObject name = JVMCIENV->wrap(name_handle);
253 if (name.is_null()) {
254 JVMCI_THROW_NULL(NullPointerException);
255 }
256 const char* cstring = JVMCIENV->as_utf8_string(name);
257 const JVMFlag* flag = JVMFlag::find_declared_flag(cstring);
258 if (flag == nullptr) {
259 return c2vm;
260 }
261 if (flag->is_bool()) {
262 jvalue prim;
263 prim.z = flag->get_bool();
264 JVMCIObject box = JVMCIENV->create_box(T_BOOLEAN, &prim, JVMCI_CHECK_NULL);
265 return JVMCIENV->get_jobject(box);
266 } else if (flag->is_ccstr()) {
267 JVMCIObject value = JVMCIENV->create_string(flag->get_ccstr(), JVMCI_CHECK_NULL);
268 return JVMCIENV->get_jobject(value);
269 } else if (flag->is_intx()) {
270 RETURN_BOXED_LONG(flag->get_intx());
271 } else if (flag->is_int()) {
272 RETURN_BOXED_LONG(flag->get_int());
273 } else if (flag->is_uint()) {
274 RETURN_BOXED_LONG(flag->get_uint());
275 } else if (flag->is_uint64_t()) {
276 RETURN_BOXED_LONG(flag->get_uint64_t());
277 } else if (flag->is_size_t()) {
278 RETURN_BOXED_LONG(flag->get_size_t());
279 } else if (flag->is_uintx()) {
280 RETURN_BOXED_LONG(flag->get_uintx());
281 } else if (flag->is_double()) {
282 RETURN_BOXED_DOUBLE(flag->get_double());
283 } else {
284 JVMCI_ERROR_NULL("VM flag %s has unsupported type %s", flag->name(), flag->type_string());
285 }
286 #undef RETURN_BOXED_LONG
287 #undef RETURN_BOXED_DOUBLE
288 C2V_END
289
290 // Macros for argument pairs representing a wrapper object and its wrapped VM pointer
291 #define ARGUMENT_PAIR(name) jobject name ## _obj, jlong name ## _pointer
292 #define UNPACK_PAIR(type, name) ((type*) name ## _pointer)
293
294 C2V_VMENTRY_NULL(jbyteArray, getBytecode, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
295 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
296
297 int code_size = method->code_size();
298 jbyte* reconstituted_code = NEW_RESOURCE_ARRAY(jbyte, code_size);
299
300 guarantee(method->method_holder()->is_rewritten(), "Method's holder should be rewritten");
301 // iterate over all bytecodes and replace non-Java bytecodes
302
303 for (BytecodeStream s(method); s.next() != Bytecodes::_illegal; ) {
304 Bytecodes::Code code = s.code();
305 Bytecodes::Code raw_code = s.raw_code();
306 int bci = s.bci();
307 int len = s.instruction_size();
308
309 // Restore original byte code.
310 reconstituted_code[bci] = (jbyte) (s.is_wide()? Bytecodes::_wide : code);
311 if (len > 1) {
312 memcpy(reconstituted_code + (bci + 1), s.bcp()+1, len-1);
313 }
314
315 if (len > 1) {
316 // Restore the big-endian constant pool indexes.
317 // Cf. Rewriter::scan_method
318 switch (code) {
319 case Bytecodes::_getstatic:
320 case Bytecodes::_putstatic:
321 case Bytecodes::_getfield:
322 case Bytecodes::_putfield:
323 case Bytecodes::_invokevirtual:
324 case Bytecodes::_invokespecial:
325 case Bytecodes::_invokestatic:
326 case Bytecodes::_invokeinterface:
327 case Bytecodes::_invokehandle: {
328 int cp_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
329 Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
330 break;
331 }
332
333 case Bytecodes::_invokedynamic: {
334 int cp_index = Bytes::get_native_u4((address) reconstituted_code + (bci + 1));
335 Bytes::put_Java_u4((address) reconstituted_code + (bci + 1), (u4) cp_index);
336 break;
337 }
338
339 default:
340 break;
341 }
342
343 // Not all ldc byte code are rewritten.
344 switch (raw_code) {
345 case Bytecodes::_fast_aldc: {
346 int cpc_index = reconstituted_code[bci + 1] & 0xff;
347 int cp_index = method->constants()->object_to_cp_index(cpc_index);
348 assert(cp_index < method->constants()->length(), "sanity check");
349 reconstituted_code[bci + 1] = (jbyte) cp_index;
350 break;
351 }
352
353 case Bytecodes::_fast_aldc_w: {
354 int cpc_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
355 int cp_index = method->constants()->object_to_cp_index(cpc_index);
356 assert(cp_index < method->constants()->length(), "sanity check");
357 Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
358 break;
359 }
360
361 default:
362 break;
363 }
364 }
365 }
366
367 JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL);
368 JVMCIENV->copy_bytes_from(reconstituted_code, result, 0, code_size);
369 return JVMCIENV->get_jbyteArray(result);
370 C2V_END
371
372 C2V_VMENTRY_0(jint, getExceptionTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
373 Method* method = UNPACK_PAIR(Method, method);
374 return method->exception_table_length();
375 C2V_END
376
377 C2V_VMENTRY_0(jlong, getExceptionTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
378 Method* method = UNPACK_PAIR(Method, method);
379 if (method->exception_table_length() == 0) {
380 return 0L;
381 }
382 return (jlong) (address) method->exception_table_start();
383 C2V_END
384
385 C2V_VMENTRY_NULL(jobject, asResolvedJavaMethod, (JNIEnv* env, jobject, jobject executable_handle))
386 requireInHotSpot("asResolvedJavaMethod", JVMCI_CHECK_NULL);
387 oop executable = JNIHandles::resolve(executable_handle);
388 oop mirror = nullptr;
389 int slot = 0;
390
391 if (executable->klass() == vmClasses::reflect_Constructor_klass()) {
392 mirror = java_lang_reflect_Constructor::clazz(executable);
393 slot = java_lang_reflect_Constructor::slot(executable);
394 } else {
395 assert(executable->klass() == vmClasses::reflect_Method_klass(), "wrong type");
396 mirror = java_lang_reflect_Method::clazz(executable);
397 slot = java_lang_reflect_Method::slot(executable);
398 }
399 Klass* holder = java_lang_Class::as_Klass(mirror);
400 methodHandle method (THREAD, InstanceKlass::cast(holder)->method_with_idnum(slot));
401 JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
402 return JVMCIENV->get_jobject(result);
403 }
404
405 C2V_VMENTRY_PREFIX(jboolean, updateCompilerThreadCanCallJava, (JNIEnv* env, jobject, jboolean newState))
406 return CompilerThreadCanCallJava::update(thread, newState) != nullptr;
407 C2V_END
408
409
410 C2V_VMENTRY_NULL(jobject, getResolvedJavaMethod, (JNIEnv* env, jobject, jobject base, jlong offset))
411 Method* method = nullptr;
412 JVMCIObject base_object = JVMCIENV->wrap(base);
413 if (base_object.is_null()) {
414 method = *((Method**)(offset));
415 } else {
416 Handle obj = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
417 if (obj->is_a(vmClasses::ResolvedMethodName_klass())) {
418 method = (Method*) (intptr_t) obj->long_field(offset);
419 } else {
420 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", obj->klass()->external_name()));
421 }
422 }
423 if (method == nullptr) {
424 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", JVMCIENV->klass_name(base_object)));
425 }
426 assert (method->is_method(), "invalid read");
427 JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, method), JVMCI_CHECK_NULL);
428 return JVMCIENV->get_jobject(result);
429 }
430
431 C2V_VMENTRY_NULL(jobject, getConstantPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass_or_method), jboolean is_klass))
432 ConstantPool* cp = nullptr;
433 if (UNPACK_PAIR(address, klass_or_method) == nullptr) {
434 JVMCI_THROW_NULL(NullPointerException);
435 }
436 if (!is_klass) {
437 cp = (UNPACK_PAIR(Method, klass_or_method))->constMethod()->constants();
438 } else {
439 cp = InstanceKlass::cast(UNPACK_PAIR(Klass, klass_or_method))->constants();
440 }
441
442 JVMCIObject result = JVMCIENV->get_jvmci_constant_pool(constantPoolHandle(THREAD, cp), JVMCI_CHECK_NULL);
443 return JVMCIENV->get_jobject(result);
444 }
445
446 C2V_VMENTRY_NULL(jobject, getResolvedJavaType0, (JNIEnv* env, jobject, jobject base, jlong offset, jboolean compressed))
447 JVMCIObject base_object = JVMCIENV->wrap(base);
448 if (base_object.is_null()) {
449 JVMCI_THROW_MSG_NULL(NullPointerException, "base object is null");
450 }
451
452 const char* base_desc = nullptr;
453 JVMCIKlassHandle klass(THREAD);
454 if (offset == oopDesc::klass_offset_in_bytes()) {
455 if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
456 Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
457 klass = base_oop->klass();
458 } else {
459 goto unexpected;
460 }
461 } else if (!compressed) {
462 if (JVMCIENV->isa_HotSpotConstantPool(base_object)) {
463 ConstantPool* cp = JVMCIENV->asConstantPool(base_object);
464 if (offset == in_bytes(ConstantPool::pool_holder_offset())) {
465 klass = cp->pool_holder();
466 } else {
467 base_desc = FormatBufferResource("[constant pool for %s]", cp->pool_holder()->signature_name());
468 goto unexpected;
469 }
470 } else if (JVMCIENV->isa_HotSpotResolvedObjectTypeImpl(base_object)) {
471 Klass* base_klass = JVMCIENV->asKlass(base_object);
472 if (offset == in_bytes(Klass::subklass_offset())) {
473 klass = base_klass->subklass();
474 } else if (offset == in_bytes(Klass::super_offset())) {
475 klass = base_klass->super();
476 } else if (offset == in_bytes(Klass::next_sibling_offset())) {
477 klass = base_klass->next_sibling();
478 } else if (offset == in_bytes(ObjArrayKlass::element_klass_offset()) && base_klass->is_objArray_klass()) {
479 klass = ObjArrayKlass::cast(base_klass)->element_klass();
480 } else if (offset >= in_bytes(Klass::primary_supers_offset()) &&
481 offset < in_bytes(Klass::primary_supers_offset()) + (int) (sizeof(Klass*) * Klass::primary_super_limit()) &&
482 offset % sizeof(Klass*) == 0) {
483 // Offset is within the primary supers array
484 int index = (int) ((offset - in_bytes(Klass::primary_supers_offset())) / sizeof(Klass*));
485 klass = base_klass->primary_super_of_depth(index);
486 } else {
487 base_desc = FormatBufferResource("[%s]", base_klass->signature_name());
488 goto unexpected;
489 }
490 } else if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
491 Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
492 if (base_oop->is_a(vmClasses::Class_klass())) {
493 if (offset == java_lang_Class::klass_offset()) {
494 klass = java_lang_Class::as_Klass(base_oop());
495 } else if (offset == java_lang_Class::array_klass_offset()) {
496 klass = java_lang_Class::array_klass_acquire(base_oop());
497 } else {
498 base_desc = FormatBufferResource("[Class=%s]", java_lang_Class::as_Klass(base_oop())->signature_name());
499 goto unexpected;
500 }
501 } else {
502 if (!base_oop.is_null()) {
503 base_desc = FormatBufferResource("[%s]", base_oop()->klass()->signature_name());
504 }
505 goto unexpected;
506 }
507 } else if (JVMCIENV->isa_HotSpotMethodData(base_object)) {
508 jlong base_address = (intptr_t) JVMCIENV->asMethodData(base_object);
509 Klass* k = *((Klass**) (intptr_t) (base_address + offset));
510 if (k == nullptr || k->class_loader_data() == nullptr || !TrainingData::is_klass_loaded(k)) {
511 return nullptr;
512 }
513 if (!k->is_loader_alive()) {
514 // Klasses in methodData might be concurrently unloading so return null in that case.
515 return nullptr;
516 }
517 klass = k;
518 } else {
519 goto unexpected;
520 }
521 } else {
522 goto unexpected;
523 }
524
525 {
526 if (klass == nullptr) {
527 return nullptr;
528 }
529 JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
530 return JVMCIENV->get_jobject(result);
531 }
532
533 unexpected:
534 JVMCI_THROW_MSG_NULL(IllegalArgumentException,
535 err_msg("Unexpected arguments: %s%s " JLONG_FORMAT " %s",
536 JVMCIENV->klass_name(base_object), base_desc == nullptr ? "" : base_desc,
537 offset, compressed ? "true" : "false"));
538 }
539
540 C2V_VMENTRY_NULL(jobject, findUniqueConcreteMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
541 methodHandle method (THREAD, UNPACK_PAIR(Method, method));
542 InstanceKlass* holder = InstanceKlass::cast(UNPACK_PAIR(Klass, klass));
543 if (holder->is_interface()) {
544 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Interface %s should be handled in Java code", holder->external_name()));
545 }
546 if (method->can_be_statically_bound()) {
547 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()));
548 }
549
550 methodHandle ucm;
551 {
552 MutexLocker locker(Compile_lock);
553 ucm = methodHandle(THREAD, Dependencies::find_unique_concrete_method(holder, method()));
554 }
555 JVMCIObject result = JVMCIENV->get_jvmci_method(ucm, JVMCI_CHECK_NULL);
556 return JVMCIENV->get_jobject(result);
557 C2V_END
558
559 C2V_VMENTRY_NULL(jobject, getImplementor, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
560 Klass* klass = UNPACK_PAIR(Klass, klass);
561 if (!klass->is_interface()) {
562 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(),
563 err_msg("Expected interface type, got %s", klass->external_name()));
564 }
565 InstanceKlass* iklass = InstanceKlass::cast(klass);
566 JVMCIKlassHandle handle(THREAD, iklass->implementor());
567 JVMCIObject implementor = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
568 return JVMCIENV->get_jobject(implementor);
569 C2V_END
570
571 C2V_VMENTRY_0(jboolean, methodIsIgnoredBySecurityStackWalk,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
572 Method* method = UNPACK_PAIR(Method, method);
573 return method->is_ignored_by_security_stack_walk();
574 C2V_END
575
576 C2V_VMENTRY_0(jboolean, isCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
577 Method* method = UNPACK_PAIR(Method, method);
578 // Skip redefined methods
579 if (method->is_old()) {
580 return false;
581 }
582 return !method->is_not_compilable(CompLevel_full_optimization);
583 C2V_END
584
585 C2V_VMENTRY_0(jboolean, hasNeverInlineDirective,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
586 methodHandle method (THREAD, UNPACK_PAIR(Method, method));
587 return !Inline || CompilerOracle::should_not_inline(method) || method->dont_inline();
588 C2V_END
589
590 C2V_VMENTRY_0(jboolean, shouldInlineMethod,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
591 methodHandle method (THREAD, UNPACK_PAIR(Method, method));
592 return CompilerOracle::should_inline(method) || method->force_inline();
593 C2V_END
594
595 C2V_VMENTRY_NULL(jobject, lookupType, (JNIEnv* env, jobject, jstring jname, ARGUMENT_PAIR(accessing_klass), jint accessing_klass_loader, jboolean resolve))
596 CompilerThreadCanCallJava canCallJava(thread, resolve); // Resolution requires Java calls
597 JVMCIObject name = JVMCIENV->wrap(jname);
598 const char* str = JVMCIENV->as_utf8_string(name);
599 TempNewSymbol class_name = SymbolTable::new_symbol(str);
600
601 if (class_name->utf8_length() <= 1) {
602 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Primitive type %s should be handled in Java code", str));
603 }
604
605 #ifdef ASSERT
606 const char* val = Arguments::PropertyList_get_value(Arguments::system_properties(), "test.jvmci.lookupTypeException");
607 if (val != nullptr) {
608 if (strstr(val, "<trace>") != nullptr) {
609 tty->print_cr("CompilerToVM.lookupType: %s", str);
610 } else if (strstr(str, val) != nullptr) {
611 THROW_MSG_NULL(vmSymbols::java_lang_Exception(),
612 err_msg("lookupTypeException: %s", str));
613 }
614 }
615 #endif
616
617 JVMCIKlassHandle resolved_klass(THREAD);
618 Klass* accessing_klass = UNPACK_PAIR(Klass, accessing_klass);
619 Handle class_loader;
620 if (accessing_klass != nullptr) {
621 class_loader = Handle(THREAD, accessing_klass->class_loader());
622 } else {
623 switch (accessing_klass_loader) {
624 case 0: break; // class_loader is already null, the boot loader
625 case 1: class_loader = Handle(THREAD, SystemDictionary::java_platform_loader()); break;
626 case 2: class_loader = Handle(THREAD, SystemDictionary::java_system_loader()); break;
627 default:
628 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Illegal class loader value: %d", accessing_klass_loader));
629 }
630 JVMCIENV->runtime()->initialize(JVMCI_CHECK_NULL);
631 }
632
633 if (resolve) {
634 resolved_klass = SystemDictionary::resolve_or_fail(class_name, class_loader, true, CHECK_NULL);
635 } else {
636 if (Signature::has_envelope(class_name)) {
637 // This is a name from a signature. Strip off the trimmings.
638 // Call recursive to keep scope of strippedsym.
639 TempNewSymbol strippedsym = Signature::strip_envelope(class_name);
640 resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
641 class_loader);
642 } else if (Signature::is_array(class_name)) {
643 SignatureStream ss(class_name, false);
644 int ndim = ss.skip_array_prefix();
645 if (ss.type() == T_OBJECT) {
646 Symbol* strippedsym = ss.as_symbol();
647 resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
648 class_loader);
649 if (!resolved_klass.is_null()) {
650 resolved_klass = resolved_klass->array_klass(ndim, CHECK_NULL);
651 }
652 } else {
653 resolved_klass = Universe::typeArrayKlass(ss.type())->array_klass(ndim, CHECK_NULL);
654 }
655 } else {
656 resolved_klass = SystemDictionary::find_instance_klass(THREAD, class_name,
657 class_loader);
658 }
659 }
660 JVMCIObject result = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
661 return JVMCIENV->get_jobject(result);
662 C2V_END
663
664 C2V_VMENTRY_NULL(jobject, getArrayType, (JNIEnv* env, jobject, jchar type_char, ARGUMENT_PAIR(klass)))
665 JVMCIKlassHandle array_klass(THREAD);
666 Klass* klass = UNPACK_PAIR(Klass, klass);
667 if (klass == nullptr) {
668 BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_NULL);
669 if (type == T_VOID) {
670 return nullptr;
671 }
672 array_klass = Universe::typeArrayKlass(type);
673 if (array_klass == nullptr) {
674 JVMCI_THROW_MSG_NULL(InternalError, err_msg("No array klass for primitive type %s", type2name(type)));
675 }
676 } else {
677 array_klass = klass->array_klass(CHECK_NULL);
678 }
679 JVMCIObject result = JVMCIENV->get_jvmci_type(array_klass, JVMCI_CHECK_NULL);
680 return JVMCIENV->get_jobject(result);
681 C2V_END
682
683 C2V_VMENTRY_NULL(jobject, lookupClass, (JNIEnv* env, jobject, jclass mirror))
684 requireInHotSpot("lookupClass", JVMCI_CHECK_NULL);
685 if (mirror == nullptr) {
686 return nullptr;
687 }
688 JVMCIKlassHandle klass(THREAD);
689 klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
690 if (klass == nullptr) {
691 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Primitive classes are unsupported");
692 }
693 JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
694 return JVMCIENV->get_jobject(result);
695 C2V_END
696
697 C2V_VMENTRY_NULL(jobject, lookupJClass, (JNIEnv* env, jobject, jlong jclass_value))
698 if (jclass_value == 0L) {
699 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass must not be zero");
700 }
701 jclass mirror = reinterpret_cast<jclass>(jclass_value);
702 // Since the jclass_value is passed as a jlong, we perform additional checks to prevent the caller from accidentally
703 // sending a value that is not a JNI handle.
704 if (JNIHandles::handle_type(thread, mirror) == JNIInvalidRefType) {
705 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass is not a valid JNI reference");
706 }
707 oop obj = JNIHandles::resolve(mirror);
708 if (!java_lang_Class::is_instance(obj)) {
709 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass must be a reference to the Class object");
710 }
711 JVMCIKlassHandle klass(THREAD, java_lang_Class::as_Klass(obj));
712 JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
713 return JVMCIENV->get_jobject(result);
714 C2V_END
715
716 C2V_VMENTRY_0(jlong, getJObjectValue, (JNIEnv* env, jobject, jobject constant_jobject))
717 requireNotInHotSpot("getJObjectValue", JVMCI_CHECK_0);
718 // Ensure that current JNI handle scope is not the top-most JNIHandleBlock as handles
719 // in that scope are only released when the thread exits.
720 if (!THREAD->has_last_Java_frame() && THREAD->active_handles()->pop_frame_link() == nullptr) {
721 JVMCI_THROW_MSG_0(IllegalStateException, err_msg("Cannot call getJObjectValue without Java frame anchor or a pushed JNI handle block"));
722 }
723 JVMCIObject constant = JVMCIENV->wrap(constant_jobject);
724 Handle constant_value = JVMCIENV->asConstant(constant, JVMCI_CHECK_0);
725 jobject jni_handle = JNIHandles::make_local(THREAD, constant_value());
726 return reinterpret_cast<jlong>(jni_handle);
727 C2V_END
728
729 C2V_VMENTRY_NULL(jobject, getUncachedStringInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
730 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
731 constantTag tag = cp->tag_at(index);
732 if (!tag.is_string()) {
733 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
734 }
735 oop obj = cp->uncached_string_at(index, CHECK_NULL);
736 return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
737 C2V_END
738
739 C2V_VMENTRY_NULL(jobject, lookupConstantInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint cp_index, bool resolve))
740 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
741 oop obj;
742 if (!resolve) {
743 bool found_it;
744 obj = cp->find_cached_constant_at(cp_index, found_it, CHECK_NULL);
745 if (!found_it) {
746 return nullptr;
747 }
748 } else {
749 obj = cp->resolve_possibly_cached_constant_at(cp_index, CHECK_NULL);
750 }
751 constantTag tag = cp->tag_at(cp_index);
752 if (tag.is_dynamic_constant()) {
753 if (obj == nullptr) {
754 return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
755 }
756 BasicType bt = Signature::basic_type(cp->uncached_signature_ref_at(cp_index));
757 if (!is_reference_type(bt)) {
758 if (!is_java_primitive(bt)) {
759 return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
760 }
761
762 // Convert standard box (e.g. java.lang.Integer) to JVMCI box (e.g. jdk.vm.ci.meta.PrimitiveConstant)
763 jvalue value;
764 jlong raw_value;
765 jchar type_char;
766 BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
767 assert(bt2 == bt, "");
768 switch (bt2) {
769 case T_LONG: type_char = 'J'; raw_value = value.j; break;
770 case T_DOUBLE: type_char = 'D'; raw_value = value.j; break;
771 case T_FLOAT: type_char = 'F'; raw_value = value.i; break;
772 case T_INT: type_char = 'I'; raw_value = value.i; break;
773 case T_SHORT: type_char = 'S'; raw_value = value.s; break;
774 case T_BYTE: type_char = 'B'; raw_value = value.b; break;
775 case T_CHAR: type_char = 'C'; raw_value = value.c; break;
776 case T_BOOLEAN: type_char = 'Z'; raw_value = value.z; break;
777 default: return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
778 }
779
780 JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, raw_value, JVMCI_CHECK_NULL);
781 return JVMCIENV->get_jobject(result);
782 }
783 }
784 #ifdef ASSERT
785 // Support for testing an OOME raised in a context where the current thread cannot call Java
786 // 1. Put -Dtest.jvmci.oome_in_lookupConstantInPool=<trace> on the command line to
787 // discover possible values for step 2.
788 // Example output:
789 //
790 // CompilerToVM.lookupConstantInPool: "Overflow: String length out of range"{0x00000007ffeb2960}
791 // CompilerToVM.lookupConstantInPool: "null"{0x00000007ffebdfe8}
792 // CompilerToVM.lookupConstantInPool: "Maximum lock count exceeded"{0x00000007ffec4f90}
793 // CompilerToVM.lookupConstantInPool: "Negative length"{0x00000007ffec4468}
794 //
795 // 2. Choose a value shown in step 1.
796 // Example: -Dtest.jvmci.oome_in_lookupConstantInPool=Negative
797 const char* val = Arguments::PropertyList_get_value(Arguments::system_properties(), "test.jvmci.oome_in_lookupConstantInPool");
798 if (val != nullptr) {
799 const char* str = obj->print_value_string();
800 if (strstr(val, "<trace>") != nullptr) {
801 tty->print_cr("CompilerToVM.lookupConstantInPool: %s", str);
802 } else if (strstr(str, val) != nullptr) {
803 Handle garbage;
804 while (true) {
805 // Trigger an OutOfMemoryError
806 objArrayOop next = oopFactory::new_objectArray(0x7FFFFFFF, CHECK_NULL);
807 next->obj_at_put(0, garbage());
808 garbage = Handle(THREAD, next);
809 }
810 }
811 }
812 #endif
813 return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
814 C2V_END
815
816 C2V_VMENTRY_0(jint, getNumIndyEntries, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp)))
817 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
818 if (cp->cache()->resolved_indy_entries() == nullptr) {
819 return 0;
820 }
821 return cp->resolved_indy_entries_length();
822 C2V_END
823
824 C2V_VMENTRY_NULL(jobjectArray, resolveBootstrapMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
825 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
826 constantTag tag = cp->tag_at(index);
827 bool is_indy = tag.is_invoke_dynamic();
828 bool is_condy = tag.is_dynamic_constant();
829 if (!(is_condy || is_indy)) {
830 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
831 }
832 // Get the indy entry based on CP index
833 int indy_index = -1;
834 if (is_indy) {
835 for (int i = 0; i < cp->resolved_indy_entries_length(); i++) {
836 if (cp->resolved_indy_entry_at(i)->constant_pool_index() == index) {
837 indy_index = i;
838 }
839 }
840 }
841 // Resolve the bootstrap specifier, its name, type, and static arguments
842 BootstrapInfo bootstrap_specifier(cp, index, indy_index);
843 Handle bsm = bootstrap_specifier.resolve_bsm(CHECK_NULL);
844
845 // call java.lang.invoke.MethodHandle::asFixedArity() -> MethodHandle
846 // to get a DirectMethodHandle from which we can then extract a Method*
847 JavaValue result(T_OBJECT);
848 JavaCalls::call_virtual(&result,
849 bsm,
850 vmClasses::MethodHandle_klass(),
851 vmSymbols::asFixedArity_name(),
852 vmSymbols::asFixedArity_signature(),
853 CHECK_NULL);
854 bsm = Handle(THREAD, result.get_oop());
855
856 // Check assumption about getting a DirectMethodHandle
857 if (!java_lang_invoke_DirectMethodHandle::is_instance(bsm())) {
858 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Unexpected MethodHandle subclass: %s", bsm->klass()->external_name()));
859 }
860 // Create return array describing the bootstrap method invocation (BSMI)
861 JVMCIObjectArray bsmi = JVMCIENV->new_Object_array(4, JVMCI_CHECK_NULL);
862
863 // Extract Method* and wrap it in a ResolvedJavaMethod
864 Handle member = Handle(THREAD, java_lang_invoke_DirectMethodHandle::member(bsm()));
865 JVMCIObject bsmi_method = JVMCIENV->get_jvmci_method(methodHandle(THREAD, java_lang_invoke_MemberName::vmtarget(member())), JVMCI_CHECK_NULL);
866 JVMCIENV->put_object_at(bsmi, 0, bsmi_method);
867
868 JVMCIObject bsmi_name = JVMCIENV->create_string(bootstrap_specifier.name(), JVMCI_CHECK_NULL);
869 JVMCIENV->put_object_at(bsmi, 1, bsmi_name);
870
871 Handle type_arg = bootstrap_specifier.type_arg();
872 JVMCIObject bsmi_type = JVMCIENV->get_object_constant(type_arg());
873 JVMCIENV->put_object_at(bsmi, 2, bsmi_type);
874
875 Handle arg_values = bootstrap_specifier.arg_values();
876 if (arg_values.not_null()) {
877 if (!arg_values->is_array()) {
878 JVMCIENV->put_object_at(bsmi, 3, JVMCIENV->get_object_constant(arg_values()));
879 } else if (arg_values->is_objArray()) {
880 objArrayHandle args_array = objArrayHandle(THREAD, (objArrayOop) arg_values());
881 int len = args_array->length();
882 JVMCIObjectArray arguments = JVMCIENV->new_JavaConstant_array(len, JVMCI_CHECK_NULL);
883 JVMCIENV->put_object_at(bsmi, 3, arguments);
884 for (int i = 0; i < len; i++) {
885 oop x = args_array->obj_at(i);
886 if (x != nullptr) {
887 JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_object_constant(x));
888 } else {
889 JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_JavaConstant_NULL_POINTER());
890 }
891 }
892 } else if (arg_values->is_typeArray()) {
893 typeArrayHandle bsci = typeArrayHandle(THREAD, (typeArrayOop) arg_values());
894 JVMCIPrimitiveArray arguments = JVMCIENV->new_intArray(bsci->length(), JVMCI_CHECK_NULL);
895 JVMCIENV->put_object_at(bsmi, 3, arguments);
896 for (int i = 0; i < bsci->length(); i++) {
897 JVMCIENV->put_int_at(arguments, i, bsci->int_at(i));
898 }
899 }
900 }
901 return JVMCIENV->get_jobjectArray(bsmi);
902 C2V_END
903
904 C2V_VMENTRY_0(jint, bootstrapArgumentIndexAt, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint cpi, jint index))
905 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
906 return cp->bootstrap_argument_index_at(cpi, index);
907 C2V_END
908
909 C2V_VMENTRY_0(jint, lookupNameAndTypeRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode))
910 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
911 return cp->name_and_type_ref_index_at(index, (Bytecodes::Code)opcode);
912 C2V_END
913
914 C2V_VMENTRY_NULL(jobject, lookupNameInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode))
915 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
916 JVMCIObject sym = JVMCIENV->create_string(cp->name_ref_at(which, (Bytecodes::Code)opcode), JVMCI_CHECK_NULL);
917 return JVMCIENV->get_jobject(sym);
918 C2V_END
919
920 C2V_VMENTRY_NULL(jobject, lookupSignatureInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode))
921 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
922 JVMCIObject sym = JVMCIENV->create_string(cp->signature_ref_at(which, (Bytecodes::Code)opcode), JVMCI_CHECK_NULL);
923 return JVMCIENV->get_jobject(sym);
924 C2V_END
925
926 C2V_VMENTRY_0(jint, lookupKlassRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode))
927 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
928 return cp->klass_ref_index_at(index, (Bytecodes::Code)opcode);
929 C2V_END
930
931 C2V_VMENTRY_NULL(jobject, resolveTypeInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
932 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
933 Klass* klass = cp->klass_at(index, CHECK_NULL);
934 JVMCIKlassHandle resolved_klass(THREAD, klass);
935 if (resolved_klass->is_instance_klass()) {
936 InstanceKlass::cast(resolved_klass())->link_class(CHECK_NULL);
937 if (!InstanceKlass::cast(resolved_klass())->is_linked()) {
938 // link_class() should not return here if there is an issue.
939 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Class %s must be linked", resolved_klass()->external_name()));
940 }
941 }
942 JVMCIObject klassObject = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
943 return JVMCIENV->get_jobject(klassObject);
944 C2V_END
945
946 C2V_VMENTRY_NULL(jobject, lookupKlassInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
947 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
948 Klass* loading_klass = cp->pool_holder();
949 bool is_accessible = false;
950 JVMCIKlassHandle klass(THREAD, JVMCIRuntime::get_klass_by_index(cp, index, is_accessible, loading_klass));
951 Symbol* symbol = nullptr;
952 if (klass.is_null()) {
953 constantTag tag = cp->tag_at(index);
954 if (tag.is_klass()) {
955 // The klass has been inserted into the constant pool
956 // very recently.
957 klass = cp->resolved_klass_at(index);
958 } else if (tag.is_symbol()) {
959 symbol = cp->symbol_at(index);
960 } else {
961 if (!tag.is_unresolved_klass()) {
962 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Expected %d at index %d, got %d", JVM_CONSTANT_UnresolvedClassInError, index, tag.value()));
963 }
964 symbol = cp->klass_name_at(index);
965 }
966 }
967 JVMCIObject result;
968 if (!klass.is_null()) {
969 result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
970 } else {
971 result = JVMCIENV->create_string(symbol, JVMCI_CHECK_NULL);
972 }
973 return JVMCIENV->get_jobject(result);
974 C2V_END
975
976 C2V_VMENTRY_NULL(jobject, lookupAppendixInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode))
977 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
978 oop appendix_oop = ConstantPool::appendix_at_if_loaded(cp, which, Bytecodes::Code(opcode));
979 return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(appendix_oop));
980 C2V_END
981
982 C2V_VMENTRY_NULL(jobject, lookupMethodInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jbyte opcode, ARGUMENT_PAIR(caller)))
983 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
984 methodHandle caller(THREAD, UNPACK_PAIR(Method, caller));
985 InstanceKlass* pool_holder = cp->pool_holder();
986 Bytecodes::Code bc = (Bytecodes::Code) (((int) opcode) & 0xFF);
987 methodHandle method(THREAD, JVMCIRuntime::get_method_by_index(cp, index, bc, pool_holder));
988 JFR_ONLY(if (method.not_null()) Jfr::on_resolution(caller(), method(), CHECK_NULL);)
989 JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
990 return JVMCIENV->get_jobject(result);
991 C2V_END
992
993 C2V_VMENTRY_NULL(jobject, resolveFieldInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, ARGUMENT_PAIR(method), jbyte opcode, jintArray info_handle))
994 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
995 Bytecodes::Code code = (Bytecodes::Code)(((int) opcode) & 0xFF);
996 fieldDescriptor fd;
997 methodHandle mh(THREAD, UNPACK_PAIR(Method, method));
998
999 Bytecodes::Code bc = (Bytecodes::Code) (((int) opcode) & 0xFF);
1000 int holder_index = cp->klass_ref_index_at(index, bc);
1001 if (!cp->tag_at(holder_index).is_klass() && !THREAD->can_call_java()) {
1002 // If the holder is not resolved in the constant pool and the current
1003 // thread cannot call Java, return null. This avoids a Java call
1004 // in LinkInfo to load the holder.
1005 Symbol* klass_name = cp->klass_ref_at_noresolve(index, bc);
1006 return nullptr;
1007 }
1008
1009 LinkInfo link_info(cp, index, mh, code, CHECK_NULL);
1010 LinkResolver::resolve_field(fd, link_info, Bytecodes::java_code(code), false, CHECK_NULL);
1011 JVMCIPrimitiveArray info = JVMCIENV->wrap(info_handle);
1012 if (info.is_null() || JVMCIENV->get_length(info) != 4) {
1013 JVMCI_ERROR_NULL("info must not be null and have a length of 4");
1014 }
1015 JVMCIENV->put_int_at(info, 0, fd.access_flags().as_field_flags());
1016 JVMCIENV->put_int_at(info, 1, fd.offset());
1017 JVMCIENV->put_int_at(info, 2, fd.index());
1018 JVMCIENV->put_int_at(info, 3, fd.field_flags().as_uint());
1019 JVMCIKlassHandle handle(THREAD, fd.field_holder());
1020 JVMCIObject field_holder = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
1021 return JVMCIENV->get_jobject(field_holder);
1022 C2V_END
1023
1024 C2V_VMENTRY_0(jint, getVtableIndexForInterfaceMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
1025 Klass* klass = UNPACK_PAIR(Klass, klass);
1026 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1027 InstanceKlass* holder = method->method_holder();
1028 if (klass->is_interface()) {
1029 JVMCI_THROW_MSG_0(InternalError, err_msg("Interface %s should be handled in Java code", klass->external_name()));
1030 }
1031 if (!holder->is_interface()) {
1032 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()));
1033 }
1034 if (!klass->is_instance_klass()) {
1035 JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be instance klass", klass->external_name()));
1036 }
1037 if (!InstanceKlass::cast(klass)->is_linked()) {
1038 JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be linked", klass->external_name()));
1039 }
1040 if (!klass->is_subtype_of(holder)) {
1041 JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s does not implement interface %s", klass->external_name(), holder->external_name()));
1042 }
1043 return LinkResolver::vtable_index_of_interface_method(klass, method);
1044 C2V_END
1045
1046 C2V_VMENTRY_NULL(jobject, resolveMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(receiver), ARGUMENT_PAIR(method), ARGUMENT_PAIR(caller)))
1047 Klass* recv_klass = UNPACK_PAIR(Klass, receiver);
1048 Klass* caller_klass = UNPACK_PAIR(Klass, caller);
1049 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1050
1051 Klass* resolved = method->method_holder();
1052 Symbol* h_name = method->name();
1053 Symbol* h_signature = method->signature();
1054
1055 if (MethodHandles::is_signature_polymorphic_method(method())) {
1056 // Signature polymorphic methods are already resolved, JVMCI just returns null in this case.
1057 return nullptr;
1058 }
1059
1060 if (method->name() == vmSymbols::clone_name() &&
1061 resolved == vmClasses::Object_klass() &&
1062 recv_klass->is_array_klass()) {
1063 // Resolution of the clone method on arrays always returns Object.clone even though that method
1064 // has protected access. There's some trickery in the access checking to make this all work out
1065 // so it's necessary to pass in the array class as the resolved class to properly trigger this.
1066 // Otherwise it's impossible to resolve the array clone methods through JVMCI. See
1067 // LinkResolver::check_method_accessability for the matching logic.
1068 resolved = recv_klass;
1069 }
1070
1071 LinkInfo link_info(resolved, h_name, h_signature, caller_klass);
1072 Method* m = nullptr;
1073 // Only do exact lookup if receiver klass has been linked. Otherwise,
1074 // the vtable has not been setup, and the LinkResolver will fail.
1075 if (recv_klass->is_array_klass() ||
1076 (InstanceKlass::cast(recv_klass)->is_linked() && !recv_klass->is_interface())) {
1077 if (resolved->is_interface()) {
1078 m = LinkResolver::resolve_interface_call_or_null(recv_klass, link_info);
1079 } else {
1080 m = LinkResolver::resolve_virtual_call_or_null(recv_klass, link_info);
1081 }
1082 }
1083
1084 if (m == nullptr) {
1085 // Return null if there was a problem with lookup (uninitialized class, etc.)
1086 return nullptr;
1087 }
1088
1089 JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, m), JVMCI_CHECK_NULL);
1090 return JVMCIENV->get_jobject(result);
1091 C2V_END
1092
1093 C2V_VMENTRY_0(jboolean, hasFinalizableSubclass,(JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1094 Klass* klass = UNPACK_PAIR(Klass, klass);
1095 assert(klass != nullptr, "method must not be called for primitive types");
1096 if (!klass->is_instance_klass()) {
1097 return false;
1098 }
1099 InstanceKlass* iklass = InstanceKlass::cast(klass);
1100 return Dependencies::find_finalizable_subclass(iklass) != nullptr;
1101 C2V_END
1102
1103 C2V_VMENTRY_NULL(jobject, getClassInitializer, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1104 Klass* klass = UNPACK_PAIR(Klass, klass);
1105 if (!klass->is_instance_klass()) {
1106 return nullptr;
1107 }
1108 InstanceKlass* iklass = InstanceKlass::cast(klass);
1109 methodHandle clinit(THREAD, iklass->class_initializer());
1110 JVMCIObject result = JVMCIENV->get_jvmci_method(clinit, JVMCI_CHECK_NULL);
1111 return JVMCIENV->get_jobject(result);
1112 C2V_END
1113
1114 C2V_VMENTRY_0(jlong, getMaxCallTargetOffset, (JNIEnv* env, jobject, jlong addr))
1115 address target_addr = (address) addr;
1116 if (target_addr != nullptr) {
1117 int64_t off_low = (int64_t)target_addr - ((int64_t)CodeCache::low_bound() + sizeof(int));
1118 int64_t off_high = (int64_t)target_addr - ((int64_t)CodeCache::high_bound() + sizeof(int));
1119 return MAX2(ABS(off_low), ABS(off_high));
1120 }
1121 return -1;
1122 C2V_END
1123
1124 C2V_VMENTRY(void, setNotInlinableOrCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1125 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1126 method->set_is_not_c1_compilable();
1127 method->set_is_not_c2_compilable();
1128 method->set_dont_inline(true);
1129 C2V_END
1130
1131 C2V_VMENTRY_0(jint, getInstallCodeFlags, (JNIEnv *env, jobject))
1132 int flags = 0;
1133 #ifndef PRODUCT
1134 flags |= 0x0001; // VM will install block comments
1135 flags |= 0x0004; // Enable HotSpotJVMCIRuntime.Option.CodeSerializationTypeInfo if not explicitly set
1136 #endif
1137 if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
1138 // VM needs to track method dependencies
1139 flags |= 0x0002;
1140 }
1141 return flags;
1142 C2V_END
1143
1144 C2V_VMENTRY_0(jint, installCode0, (JNIEnv *env, jobject,
1145 jlong compiled_code_buffer,
1146 jlong serialization_ns,
1147 bool with_type_info,
1148 jobject compiled_code,
1149 jobjectArray object_pool,
1150 jobject installed_code,
1151 jlong failed_speculations_address,
1152 jbyteArray speculations_obj))
1153 HandleMark hm(THREAD);
1154 JNIHandleMark jni_hm(thread);
1155
1156 JVMCIObject compiled_code_handle = JVMCIENV->wrap(compiled_code);
1157 objArrayHandle object_pool_handle(thread, JVMCIENV->is_hotspot() ? (objArrayOop) JNIHandles::resolve(object_pool) : nullptr);
1158
1159 CodeBlob* cb = nullptr;
1160 JVMCIObject installed_code_handle = JVMCIENV->wrap(installed_code);
1161 JVMCIPrimitiveArray speculations_handle = JVMCIENV->wrap(speculations_obj);
1162
1163 int speculations_len = JVMCIENV->get_length(speculations_handle);
1164 char* speculations = NEW_RESOURCE_ARRAY(char, speculations_len);
1165 JVMCIENV->copy_bytes_to(speculations_handle, (jbyte*) speculations, 0, speculations_len);
1166
1167 JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK_JNI_ERR);
1168 JVMCICompiler::CodeInstallStats* stats = compiler->code_install_stats(!thread->is_Compiler_thread());
1169 elapsedTimer *timer = stats->timer();
1170 timer->add_nanoseconds(serialization_ns);
1171 TraceTime install_time("installCode", timer);
1172
1173 CodeInstaller installer(JVMCIENV);
1174 JVMCINMethodHandle nmethod_handle(THREAD);
1175
1176 JVMCI::CodeInstallResult result = installer.install(compiler,
1177 compiled_code_buffer,
1178 with_type_info,
1179 compiled_code_handle,
1180 object_pool_handle,
1181 cb,
1182 nmethod_handle,
1183 installed_code_handle,
1184 (FailedSpeculation**)(address) failed_speculations_address,
1185 speculations,
1186 speculations_len,
1187 JVMCI_CHECK_0);
1188
1189 if (PrintCodeCacheOnCompilation) {
1190 stringStream s;
1191 // Dump code cache into a buffer before locking the tty,
1192 {
1193 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1194 CodeCache::print_summary(&s, false);
1195 }
1196 ttyLocker ttyl;
1197 tty->print_raw_cr(s.freeze());
1198 }
1199
1200 if (result != JVMCI::ok) {
1201 assert(cb == nullptr, "should be");
1202 } else {
1203 stats->on_install(cb);
1204 if (installed_code_handle.is_non_null()) {
1205 if (cb->is_nmethod()) {
1206 assert(JVMCIENV->isa_HotSpotNmethod(installed_code_handle), "wrong type");
1207 // Clear the link to an old nmethod first
1208 JVMCIObject nmethod_mirror = installed_code_handle;
1209 JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, true, JVMCI_CHECK_0);
1210 } else {
1211 assert(JVMCIENV->isa_InstalledCode(installed_code_handle), "wrong type");
1212 }
1213 // Initialize the link to the new code blob
1214 JVMCIENV->initialize_installed_code(installed_code_handle, cb, JVMCI_CHECK_0);
1215 }
1216 }
1217 return result;
1218 C2V_END
1219
1220 C2V_VMENTRY(void, resetCompilationStatistics, (JNIEnv* env, jobject))
1221 JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK);
1222 CompilerStatistics* stats = compiler->stats();
1223 stats->_standard.reset();
1224 stats->_osr.reset();
1225 C2V_END
1226
1227 C2V_VMENTRY_NULL(jobject, disassembleCodeBlob, (JNIEnv* env, jobject, jobject installedCode))
1228 HandleMark hm(THREAD);
1229
1230 if (installedCode == nullptr) {
1231 JVMCI_THROW_MSG_NULL(NullPointerException, "installedCode is null");
1232 }
1233
1234 JVMCIObject installedCodeObject = JVMCIENV->wrap(installedCode);
1235 CodeBlob* cb = JVMCIENV->get_code_blob(installedCodeObject);
1236 if (cb == nullptr) {
1237 return nullptr;
1238 }
1239
1240 // We don't want the stringStream buffer to resize during disassembly as it
1241 // uses scoped resource memory. If a nested function called during disassembly uses
1242 // a ResourceMark and the buffer expands within the scope of the mark,
1243 // the buffer becomes garbage when that scope is exited. Experience shows that
1244 // the disassembled code is typically about 10x the code size so a fixed buffer
1245 // sized to 20x code size plus a fixed amount for header info should be sufficient.
1246 int bufferSize = cb->code_size() * 20 + 1024;
1247 char* buffer = NEW_RESOURCE_ARRAY(char, bufferSize);
1248 stringStream st(buffer, bufferSize);
1249 Disassembler::decode(cb, &st);
1250 if (st.size() <= 0) {
1251 return nullptr;
1252 }
1253
1254 JVMCIObject result = JVMCIENV->create_string(st.as_string(), JVMCI_CHECK_NULL);
1255 return JVMCIENV->get_jobject(result);
1256 C2V_END
1257
1258 C2V_VMENTRY_NULL(jobject, getStackTraceElement, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int bci))
1259 HandleMark hm(THREAD);
1260
1261 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1262 JVMCIObject element = JVMCIENV->new_StackTraceElement(method, bci, JVMCI_CHECK_NULL);
1263 return JVMCIENV->get_jobject(element);
1264 C2V_END
1265
1266 C2V_VMENTRY_NULL(jobject, executeHotSpotNmethod, (JNIEnv* env, jobject, jobject args, jobject hs_nmethod))
1267 // The incoming arguments array would have to contain JavaConstants instead of regular objects
1268 // and the return value would have to be wrapped as a JavaConstant.
1269 requireInHotSpot("executeHotSpotNmethod", JVMCI_CHECK_NULL);
1270
1271 HandleMark hm(THREAD);
1272
1273 JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod);
1274 methodHandle mh;
1275 {
1276 // Reduce the scope of JVMCINMethodHandle so that it isn't alive across the Java call. Once the
1277 // nmethod has been validated and the method is fetched from the nmethod it's fine for the
1278 // nmethod to be reclaimed if necessary.
1279 JVMCINMethodHandle nmethod_handle(THREAD);
1280 nmethod* nm = JVMCIENV->get_nmethod(nmethod_mirror, nmethod_handle);
1281 if (nm == nullptr || !nm->is_in_use()) {
1282 JVMCI_THROW_NULL(InvalidInstalledCodeException);
1283 }
1284 methodHandle nmh(THREAD, nm->method());
1285 mh = nmh;
1286 }
1287 Symbol* signature = mh->signature();
1288 JavaCallArguments jca(mh->size_of_parameters());
1289
1290 JavaArgumentUnboxer jap(signature, &jca, (arrayOop) JNIHandles::resolve(args), mh->is_static());
1291 JavaValue result(jap.return_type());
1292 jca.set_alternative_target(Handle(THREAD, JNIHandles::resolve(nmethod_mirror.as_jobject())));
1293 JavaCalls::call(&result, mh, &jca, CHECK_NULL);
1294
1295 if (jap.return_type() == T_VOID) {
1296 return nullptr;
1297 } else if (is_reference_type(jap.return_type())) {
1298 return JNIHandles::make_local(THREAD, result.get_oop());
1299 } else {
1300 jvalue *value = (jvalue *) result.get_value_addr();
1301 // Narrow the value down if required (Important on big endian machines)
1302 switch (jap.return_type()) {
1303 case T_BOOLEAN:
1304 value->z = (jboolean) value->i;
1305 break;
1306 case T_BYTE:
1307 value->b = (jbyte) value->i;
1308 break;
1309 case T_CHAR:
1310 value->c = (jchar) value->i;
1311 break;
1312 case T_SHORT:
1313 value->s = (jshort) value->i;
1314 break;
1315 default:
1316 break;
1317 }
1318 JVMCIObject o = JVMCIENV->create_box(jap.return_type(), value, JVMCI_CHECK_NULL);
1319 return JVMCIENV->get_jobject(o);
1320 }
1321 C2V_END
1322
1323 C2V_VMENTRY_NULL(jlongArray, getLineNumberTable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1324 Method* method = UNPACK_PAIR(Method, method);
1325 if (!method->has_linenumber_table()) {
1326 return nullptr;
1327 }
1328 u2 num_entries = 0;
1329 CompressedLineNumberReadStream streamForSize(method->compressed_linenumber_table());
1330 while (streamForSize.read_pair()) {
1331 num_entries++;
1332 }
1333
1334 CompressedLineNumberReadStream stream(method->compressed_linenumber_table());
1335 JVMCIPrimitiveArray result = JVMCIENV->new_longArray(2 * num_entries, JVMCI_CHECK_NULL);
1336
1337 int i = 0;
1338 jlong value;
1339 while (stream.read_pair()) {
1340 value = ((jlong) stream.bci());
1341 JVMCIENV->put_long_at(result, i, value);
1342 value = ((jlong) stream.line());
1343 JVMCIENV->put_long_at(result, i + 1, value);
1344 i += 2;
1345 }
1346
1347 return (jlongArray) JVMCIENV->get_jobject(result);
1348 C2V_END
1349
1350 C2V_VMENTRY_0(jlong, getLocalVariableTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1351 Method* method = UNPACK_PAIR(Method, method);
1352 if (!method->has_localvariable_table()) {
1353 return 0;
1354 }
1355 return (jlong) (address) method->localvariable_table_start();
1356 C2V_END
1357
1358 C2V_VMENTRY_0(jint, getLocalVariableTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1359 Method* method = UNPACK_PAIR(Method, method);
1360 return method->localvariable_table_length();
1361 C2V_END
1362
1363 static MethodData* get_profiling_method_data(const methodHandle& method, TRAPS) {
1364 MethodData* method_data = method->method_data();
1365 if (method_data == nullptr) {
1366 method->build_profiling_method_data(method, CHECK_NULL);
1367 method_data = method->method_data();
1368 if (method_data == nullptr) {
1369 THROW_MSG_NULL(vmSymbols::java_lang_OutOfMemoryError(), "cannot allocate MethodData")
1370 }
1371 }
1372 return method_data;
1373 }
1374
1375 C2V_VMENTRY(void, reprofile, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1376 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1377 MethodCounters* mcs = method->method_counters();
1378 if (mcs != nullptr) {
1379 mcs->clear_counters();
1380 }
1381 NOT_PRODUCT(method->set_compiled_invocation_count(0));
1382
1383 nmethod* code = method->code();
1384 if (code != nullptr) {
1385 code->make_not_entrant("JVMCI reprofile");
1386 }
1387
1388 MethodData* method_data = method->method_data();
1389 if (method_data == nullptr) {
1390 method_data = get_profiling_method_data(method, CHECK);
1391 } else {
1392 CompilerThreadCanCallJava canCallJava(THREAD, true);
1393 method_data->reinitialize();
1394 }
1395 C2V_END
1396
1397
1398 C2V_VMENTRY(void, invalidateHotSpotNmethod, (JNIEnv* env, jobject, jobject hs_nmethod, jboolean deoptimize))
1399 JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod);
1400 JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, deoptimize, JVMCI_CHECK);
1401 C2V_END
1402
1403 C2V_VMENTRY_NULL(jlongArray, collectCounters, (JNIEnv* env, jobject))
1404 // Returns a zero length array if counters aren't enabled
1405 JVMCIPrimitiveArray array = JVMCIENV->new_longArray(JVMCICounterSize, JVMCI_CHECK_NULL);
1406 if (JVMCICounterSize > 0) {
1407 jlong* temp_array = NEW_RESOURCE_ARRAY(jlong, JVMCICounterSize);
1408 JavaThread::collect_counters(temp_array, JVMCICounterSize);
1409 JVMCIENV->copy_longs_from(temp_array, array, 0, JVMCICounterSize);
1410 }
1411 return (jlongArray) JVMCIENV->get_jobject(array);
1412 C2V_END
1413
1414 C2V_VMENTRY_0(jint, getCountersSize, (JNIEnv* env, jobject))
1415 return (jint) JVMCICounterSize;
1416 C2V_END
1417
1418 C2V_VMENTRY_0(jboolean, setCountersSize, (JNIEnv* env, jobject, jint new_size))
1419 return JavaThread::resize_all_jvmci_counters(new_size);
1420 C2V_END
1421
1422 C2V_VMENTRY_0(jint, allocateCompileId, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci))
1423 HandleMark hm(THREAD);
1424 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1425 if (method.is_null()) {
1426 JVMCI_THROW_0(NullPointerException);
1427 }
1428 if (entry_bci >= method->code_size() || entry_bci < -1) {
1429 JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Unexpected bci %d", entry_bci));
1430 }
1431 return CompileBroker::assign_compile_id_unlocked(THREAD, method, entry_bci);
1432 C2V_END
1433
1434
1435 C2V_VMENTRY_0(jboolean, isMature, (JNIEnv* env, jobject, jlong method_data_pointer))
1436 MethodData* mdo = (MethodData*) method_data_pointer;
1437 return mdo != nullptr && mdo->is_mature();
1438 C2V_END
1439
1440 C2V_VMENTRY_0(jboolean, hasCompiledCodeForOSR, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci, int comp_level))
1441 Method* method = UNPACK_PAIR(Method, method);
1442 return method->lookup_osr_nmethod_for(entry_bci, comp_level, true) != nullptr;
1443 C2V_END
1444
1445 C2V_VMENTRY_NULL(jobject, getSymbol, (JNIEnv* env, jobject, jlong symbol))
1446 JVMCIObject sym = JVMCIENV->create_string((Symbol*)(address)symbol, JVMCI_CHECK_NULL);
1447 return JVMCIENV->get_jobject(sym);
1448 C2V_END
1449
1450 C2V_VMENTRY_NULL(jobject, getSignatureName, (JNIEnv* env, jobject, jlong klass_pointer))
1451 Klass* klass = UNPACK_PAIR(Klass, klass);
1452 JVMCIObject signature = JVMCIENV->create_string(klass->signature_name(), JVMCI_CHECK_NULL);
1453 return JVMCIENV->get_jobject(signature);
1454 C2V_END
1455
1456 /*
1457 * Used by matches() to convert a ResolvedJavaMethod[] to an array of Method*.
1458 */
1459 static GrowableArray<Method*>* init_resolved_methods(jobjectArray methods, JVMCIEnv* JVMCIENV) {
1460 objArrayOop methods_oop = (objArrayOop) JNIHandles::resolve(methods);
1461 GrowableArray<Method*>* resolved_methods = new GrowableArray<Method*>(methods_oop->length());
1462 for (int i = 0; i < methods_oop->length(); i++) {
1463 oop resolved = methods_oop->obj_at(i);
1464 Method* resolved_method = nullptr;
1465 if (resolved->klass() == HotSpotJVMCI::HotSpotResolvedJavaMethodImpl::klass()) {
1466 resolved_method = HotSpotJVMCI::asMethod(JVMCIENV, resolved);
1467 }
1468 resolved_methods->append(resolved_method);
1469 }
1470 return resolved_methods;
1471 }
1472
1473 /*
1474 * Used by c2v_iterateFrames to check if `method` matches one of the ResolvedJavaMethods in the `methods` array.
1475 * The ResolvedJavaMethod[] array is converted to a Method* array that is then cached in the resolved_methods_ref in/out parameter.
1476 * In case of a match, the matching ResolvedJavaMethod is returned in matched_jvmci_method_ref.
1477 */
1478 static bool matches(jobjectArray methods, Method* method, GrowableArray<Method*>** resolved_methods_ref, Handle* matched_jvmci_method_ref, Thread* THREAD, JVMCIEnv* JVMCIENV) {
1479 GrowableArray<Method*>* resolved_methods = *resolved_methods_ref;
1480 if (resolved_methods == nullptr) {
1481 resolved_methods = init_resolved_methods(methods, JVMCIENV);
1482 *resolved_methods_ref = resolved_methods;
1483 }
1484 assert(method != nullptr, "method should not be null");
1485 assert(resolved_methods->length() == ((objArrayOop) JNIHandles::resolve(methods))->length(), "arrays must have the same length");
1486 for (int i = 0; i < resolved_methods->length(); i++) {
1487 Method* m = resolved_methods->at(i);
1488 if (m == method) {
1489 *matched_jvmci_method_ref = Handle(THREAD, ((objArrayOop) JNIHandles::resolve(methods))->obj_at(i));
1490 return true;
1491 }
1492 }
1493 return false;
1494 }
1495
1496 /*
1497 * Resolves an interface call to a concrete method handle.
1498 */
1499 static methodHandle resolve_interface_call(Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
1500 CallInfo callinfo;
1501 Handle receiver = args->receiver();
1502 Klass* recvrKlass = receiver.is_null() ? (Klass*)nullptr : receiver->klass();
1503 LinkInfo link_info(spec_klass, name, signature);
1504 LinkResolver::resolve_interface_call(
1505 callinfo, receiver, recvrKlass, link_info, true, CHECK_(methodHandle()));
1506 methodHandle method(THREAD, callinfo.selected_method());
1507 assert(method.not_null(), "should have thrown exception");
1508 return method;
1509 }
1510
1511 /*
1512 * Used by c2v_iterateFrames to make a new vframeStream at the given compiled frame id (stack pointer) and vframe id.
1513 */
1514 static void resync_vframestream_to_compiled_frame(vframeStream& vfst, intptr_t* stack_pointer, int vframe_id, JavaThread* thread, TRAPS) {
1515 vfst = vframeStream(thread);
1516 while (vfst.frame_id() != stack_pointer && !vfst.at_end()) {
1517 vfst.next();
1518 }
1519 if (vfst.frame_id() != stack_pointer) {
1520 THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "stack frame not found after deopt")
1521 }
1522 if (vfst.is_interpreted_frame()) {
1523 THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "compiled stack frame expected")
1524 }
1525 while (vfst.vframe_id() != vframe_id) {
1526 if (vfst.at_end()) {
1527 THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "vframe not found after deopt")
1528 }
1529 vfst.next();
1530 assert(!vfst.is_interpreted_frame(), "Wrong frame type");
1531 }
1532 }
1533
1534 /*
1535 * Used by c2v_iterateFrames. Returns an array of any unallocated scope objects or null if none.
1536 */
1537 static GrowableArray<ScopeValue*>* get_unallocated_objects_or_null(GrowableArray<ScopeValue*>* scope_objects) {
1538 GrowableArray<ScopeValue*>* unallocated = nullptr;
1539 for (int i = 0; i < scope_objects->length(); i++) {
1540 ObjectValue* sv = (ObjectValue*) scope_objects->at(i);
1541 if (sv->value().is_null()) {
1542 if (unallocated == nullptr) {
1543 unallocated = new GrowableArray<ScopeValue*>(scope_objects->length());
1544 }
1545 unallocated->append(sv);
1546 }
1547 }
1548 return unallocated;
1549 }
1550
1551 C2V_VMENTRY_NULL(jobject, iterateFrames, (JNIEnv* env, jobject compilerToVM, jobjectArray initial_methods, jobjectArray match_methods, jint initialSkip, jobject visitor_handle))
1552
1553 if (!thread->has_last_Java_frame()) {
1554 return nullptr;
1555 }
1556 Handle visitor(THREAD, JNIHandles::resolve_non_null(visitor_handle));
1557 KeepStackGCProcessedMark keep_stack(THREAD);
1558
1559 requireInHotSpot("iterateFrames", JVMCI_CHECK_NULL);
1560
1561 HotSpotJVMCI::HotSpotStackFrameReference::klass()->initialize(CHECK_NULL);
1562
1563 vframeStream vfst(thread);
1564 jobjectArray methods = initial_methods;
1565 methodHandle visitor_method;
1566 GrowableArray<Method*>* resolved_methods = nullptr;
1567
1568 while (!vfst.at_end()) { // frame loop
1569 bool realloc_called = false;
1570 intptr_t* frame_id = vfst.frame_id();
1571
1572 // Previous compiledVFrame of this frame; use with at_scope() to reuse scope object pool.
1573 compiledVFrame* prev_cvf = nullptr;
1574
1575 for (; !vfst.at_end() && vfst.frame_id() == frame_id; vfst.next()) { // vframe loop
1576 int frame_number = 0;
1577 Method *method = vfst.method();
1578 int bci = vfst.bci();
1579
1580 Handle matched_jvmci_method;
1581 if (methods == nullptr || matches(methods, method, &resolved_methods, &matched_jvmci_method, THREAD, JVMCIENV)) {
1582 if (initialSkip > 0) {
1583 initialSkip--;
1584 continue;
1585 }
1586 javaVFrame* vf;
1587 if (prev_cvf != nullptr && prev_cvf->frame_pointer()->id() == frame_id) {
1588 assert(prev_cvf->is_compiled_frame(), "expected compiled Java frame");
1589 vf = prev_cvf->at_scope(vfst.decode_offset(), vfst.vframe_id());
1590 } else {
1591 vf = vfst.asJavaVFrame();
1592 }
1593
1594 StackValueCollection* locals = nullptr;
1595 typeArrayHandle localIsVirtual_h;
1596 if (vf->is_compiled_frame()) {
1597 // compiled method frame
1598 compiledVFrame* cvf = compiledVFrame::cast(vf);
1599
1600 ScopeDesc* scope = cvf->scope();
1601 // native wrappers do not have a scope
1602 if (scope != nullptr && scope->objects() != nullptr) {
1603 prev_cvf = cvf;
1604
1605 GrowableArray<ScopeValue*>* objects = nullptr;
1606 if (!realloc_called) {
1607 objects = scope->objects();
1608 } else {
1609 // some object might already have been re-allocated, only reallocate the non-allocated ones
1610 objects = get_unallocated_objects_or_null(scope->objects());
1611 }
1612
1613 if (objects != nullptr) {
1614 RegisterMap reg_map(vf->register_map());
1615 bool realloc_failures = Deoptimization::realloc_objects(thread, vf->frame_pointer(), ®_map, objects, CHECK_NULL);
1616 Deoptimization::reassign_fields(vf->frame_pointer(), ®_map, objects, realloc_failures, false);
1617 realloc_called = true;
1618 }
1619
1620 GrowableArray<ScopeValue*>* local_values = scope->locals();
1621 for (int i = 0; i < local_values->length(); i++) {
1622 ScopeValue* value = local_values->at(i);
1623 assert(!value->is_object_merge(), "Should not be.");
1624 if (value->is_object()) {
1625 if (localIsVirtual_h.is_null()) {
1626 typeArrayOop array_oop = oopFactory::new_boolArray(local_values->length(), CHECK_NULL);
1627 localIsVirtual_h = typeArrayHandle(THREAD, array_oop);
1628 }
1629 localIsVirtual_h->bool_at_put(i, true);
1630 }
1631 }
1632 }
1633
1634 locals = cvf->locals();
1635 frame_number = cvf->vframe_id();
1636 } else {
1637 // interpreted method frame
1638 interpretedVFrame* ivf = interpretedVFrame::cast(vf);
1639
1640 locals = ivf->locals();
1641 }
1642 assert(bci == vf->bci(), "wrong bci");
1643 assert(method == vf->method(), "wrong method");
1644
1645 Handle frame_reference = HotSpotJVMCI::HotSpotStackFrameReference::klass()->allocate_instance_handle(CHECK_NULL);
1646 HotSpotJVMCI::HotSpotStackFrameReference::set_bci(JVMCIENV, frame_reference(), bci);
1647 if (matched_jvmci_method.is_null()) {
1648 methodHandle mh(THREAD, method);
1649 JVMCIObject jvmci_method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
1650 matched_jvmci_method = Handle(THREAD, JNIHandles::resolve(jvmci_method.as_jobject()));
1651 }
1652 HotSpotJVMCI::HotSpotStackFrameReference::set_method(JVMCIENV, frame_reference(), matched_jvmci_method());
1653 HotSpotJVMCI::HotSpotStackFrameReference::set_localIsVirtual(JVMCIENV, frame_reference(), localIsVirtual_h());
1654
1655 HotSpotJVMCI::HotSpotStackFrameReference::set_compilerToVM(JVMCIENV, frame_reference(), JNIHandles::resolve(compilerToVM));
1656 HotSpotJVMCI::HotSpotStackFrameReference::set_stackPointer(JVMCIENV, frame_reference(), (jlong) frame_id);
1657 HotSpotJVMCI::HotSpotStackFrameReference::set_frameNumber(JVMCIENV, frame_reference(), frame_number);
1658
1659 // initialize the locals array
1660 objArrayOop array_oop = oopFactory::new_objectArray(locals->size(), CHECK_NULL);
1661 objArrayHandle array(THREAD, array_oop);
1662 for (int i = 0; i < locals->size(); i++) {
1663 StackValue* var = locals->at(i);
1664 if (var->type() == T_OBJECT) {
1665 array->obj_at_put(i, locals->at(i)->get_obj()());
1666 }
1667 }
1668 HotSpotJVMCI::HotSpotStackFrameReference::set_locals(JVMCIENV, frame_reference(), array());
1669 HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, frame_reference(), JNI_FALSE);
1670
1671 JavaValue result(T_OBJECT);
1672 JavaCallArguments args(visitor);
1673 if (visitor_method.is_null()) {
1674 visitor_method = resolve_interface_call(HotSpotJVMCI::InspectedFrameVisitor::klass(), vmSymbols::visitFrame_name(), vmSymbols::visitFrame_signature(), &args, CHECK_NULL);
1675 }
1676
1677 args.push_oop(frame_reference);
1678 JavaCalls::call(&result, visitor_method, &args, CHECK_NULL);
1679 if (result.get_oop() != nullptr) {
1680 return JNIHandles::make_local(thread, result.get_oop());
1681 }
1682 if (methods == initial_methods) {
1683 methods = match_methods;
1684 if (resolved_methods != nullptr && JNIHandles::resolve(match_methods) != JNIHandles::resolve(initial_methods)) {
1685 resolved_methods = nullptr;
1686 }
1687 }
1688 assert(initialSkip == 0, "There should be no match before initialSkip == 0");
1689 if (HotSpotJVMCI::HotSpotStackFrameReference::objectsMaterialized(JVMCIENV, frame_reference()) == JNI_TRUE) {
1690 // the frame has been deoptimized, we need to re-synchronize the frame and vframe
1691 prev_cvf = nullptr;
1692 intptr_t* stack_pointer = (intptr_t*) HotSpotJVMCI::HotSpotStackFrameReference::stackPointer(JVMCIENV, frame_reference());
1693 resync_vframestream_to_compiled_frame(vfst, stack_pointer, frame_number, thread, CHECK_NULL);
1694 }
1695 }
1696 } // end of vframe loop
1697 } // end of frame loop
1698
1699 // the end was reached without finding a matching method
1700 return nullptr;
1701 C2V_END
1702
1703 C2V_VMENTRY_0(int, decodeIndyIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint indy_index, jboolean resolve))
1704 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1705 CallInfo callInfo;
1706 if (resolve) {
1707 LinkResolver::resolve_invoke(callInfo, Handle(), cp, indy_index, Bytecodes::_invokedynamic, CHECK_0);
1708 cp->cache()->set_dynamic_call(callInfo, indy_index);
1709 }
1710 return cp->resolved_indy_entry_at(indy_index)->constant_pool_index();
1711 C2V_END
1712
1713 C2V_VMENTRY_0(int, decodeFieldIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint field_index))
1714 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1715 if (field_index < 0 || field_index >= cp->resolved_field_entries_length()) {
1716 JVMCI_THROW_MSG_0(IllegalStateException, err_msg("invalid field index %d", field_index));
1717 }
1718 return cp->resolved_field_entry_at(field_index)->constant_pool_index();
1719 C2V_END
1720
1721 C2V_VMENTRY_0(int, decodeMethodIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint method_index))
1722 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1723 if (method_index < 0 || method_index >= cp->resolved_method_entries_length()) {
1724 JVMCI_THROW_MSG_0(IllegalStateException, err_msg("invalid method index %d", method_index));
1725 }
1726 return cp->resolved_method_entry_at(method_index)->constant_pool_index();
1727 C2V_END
1728
1729 C2V_VMENTRY(void, resolveInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
1730 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1731 Klass* holder = cp->klass_ref_at(index, Bytecodes::_invokehandle, CHECK);
1732 Symbol* name = cp->name_ref_at(index, Bytecodes::_invokehandle);
1733 if (MethodHandles::is_signature_polymorphic_name(holder, name)) {
1734 CallInfo callInfo;
1735 LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, Bytecodes::_invokehandle, CHECK);
1736 cp->cache()->set_method_handle(index, callInfo);
1737 }
1738 C2V_END
1739
1740 C2V_VMENTRY_0(jint, isResolvedInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode))
1741 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1742 ResolvedMethodEntry* entry = cp->cache()->resolved_method_entry_at(index);
1743 if (entry->is_resolved(Bytecodes::_invokehandle)) {
1744 // MethodHandle.invoke* --> LambdaForm?
1745 ResourceMark rm;
1746
1747 LinkInfo link_info(cp, index, Bytecodes::_invokehandle, CATCH);
1748
1749 Klass* resolved_klass = link_info.resolved_klass();
1750
1751 Symbol* name_sym = cp->name_ref_at(index, Bytecodes::_invokehandle);
1752
1753 vmassert(MethodHandles::is_method_handle_invoke_name(resolved_klass, name_sym), "!");
1754 vmassert(MethodHandles::is_signature_polymorphic_name(resolved_klass, name_sym), "!");
1755
1756 methodHandle adapter_method(THREAD, entry->method());
1757
1758 methodHandle resolved_method(adapter_method);
1759
1760 // Can we treat it as a regular invokevirtual?
1761 if (resolved_method->method_holder() == resolved_klass && resolved_method->name() == name_sym) {
1762 vmassert(!resolved_method->is_static(),"!");
1763 vmassert(MethodHandles::is_signature_polymorphic_method(resolved_method()),"!");
1764 vmassert(!MethodHandles::is_signature_polymorphic_static(resolved_method->intrinsic_id()), "!");
1765 vmassert(cp->cache()->appendix_if_resolved(entry) == nullptr, "!");
1766
1767 methodHandle m(THREAD, LinkResolver::linktime_resolve_virtual_method_or_null(link_info));
1768 vmassert(m == resolved_method, "!!");
1769 return -1;
1770 }
1771
1772 return Bytecodes::_invokevirtual;
1773 }
1774 if ((Bytecodes::Code)opcode == Bytecodes::_invokedynamic) {
1775 if (cp->resolved_indy_entry_at(index)->is_resolved()) {
1776 return Bytecodes::_invokedynamic;
1777 }
1778 }
1779 return -1;
1780 C2V_END
1781
1782
1783 C2V_VMENTRY_NULL(jobject, getSignaturePolymorphicHolders, (JNIEnv* env, jobject))
1784 JVMCIObjectArray holders = JVMCIENV->new_String_array(2, JVMCI_CHECK_NULL);
1785 JVMCIObject mh = JVMCIENV->create_string("Ljava/lang/invoke/MethodHandle;", JVMCI_CHECK_NULL);
1786 JVMCIObject vh = JVMCIENV->create_string("Ljava/lang/invoke/VarHandle;", JVMCI_CHECK_NULL);
1787 JVMCIENV->put_object_at(holders, 0, mh);
1788 JVMCIENV->put_object_at(holders, 1, vh);
1789 return JVMCIENV->get_jobject(holders);
1790 C2V_END
1791
1792 C2V_VMENTRY_0(jboolean, shouldDebugNonSafepoints, (JNIEnv* env, jobject))
1793 //see compute_recording_non_safepoints in debugInfroRec.cpp
1794 if (JvmtiExport::should_post_compiled_method_load() && FLAG_IS_DEFAULT(DebugNonSafepoints)) {
1795 return true;
1796 }
1797 return DebugNonSafepoints;
1798 C2V_END
1799
1800 // public native void materializeVirtualObjects(HotSpotStackFrameReference stackFrame, boolean invalidate);
1801 C2V_VMENTRY(void, materializeVirtualObjects, (JNIEnv* env, jobject, jobject _hs_frame, bool invalidate))
1802 JVMCIObject hs_frame = JVMCIENV->wrap(_hs_frame);
1803 if (hs_frame.is_null()) {
1804 JVMCI_THROW_MSG(NullPointerException, "stack frame is null");
1805 }
1806
1807 requireInHotSpot("materializeVirtualObjects", JVMCI_CHECK);
1808
1809 JVMCIENV->HotSpotStackFrameReference_initialize(JVMCI_CHECK);
1810
1811 // look for the given stack frame
1812 StackFrameStream fst(thread, false /* update */, true /* process_frames */);
1813 intptr_t* stack_pointer = (intptr_t*) JVMCIENV->get_HotSpotStackFrameReference_stackPointer(hs_frame);
1814 while (fst.current()->id() != stack_pointer && !fst.is_done()) {
1815 fst.next();
1816 }
1817 if (fst.current()->id() != stack_pointer) {
1818 JVMCI_THROW_MSG(IllegalStateException, "stack frame not found");
1819 }
1820
1821 if (invalidate) {
1822 if (!fst.current()->is_compiled_frame()) {
1823 JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected");
1824 }
1825 fst.current()->cb()->as_nmethod()->make_not_entrant("JVMCI materialize virtual objects");
1826 }
1827 Deoptimization::deoptimize(thread, *fst.current(), Deoptimization::Reason_none);
1828 // look for the frame again as it has been updated by deopt (pc, deopt state...)
1829 StackFrameStream fstAfterDeopt(thread, true /* update */, true /* process_frames */);
1830 while (fstAfterDeopt.current()->id() != stack_pointer && !fstAfterDeopt.is_done()) {
1831 fstAfterDeopt.next();
1832 }
1833 if (fstAfterDeopt.current()->id() != stack_pointer) {
1834 JVMCI_THROW_MSG(IllegalStateException, "stack frame not found after deopt");
1835 }
1836
1837 vframe* vf = vframe::new_vframe(fstAfterDeopt.current(), fstAfterDeopt.register_map(), thread);
1838 if (!vf->is_compiled_frame()) {
1839 JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected");
1840 }
1841
1842 GrowableArray<compiledVFrame*>* virtualFrames = new GrowableArray<compiledVFrame*>(10);
1843 while (true) {
1844 assert(vf->is_compiled_frame(), "Wrong frame type");
1845 virtualFrames->push(compiledVFrame::cast(vf));
1846 if (vf->is_top()) {
1847 break;
1848 }
1849 vf = vf->sender();
1850 }
1851
1852 int last_frame_number = JVMCIENV->get_HotSpotStackFrameReference_frameNumber(hs_frame);
1853 if (last_frame_number >= virtualFrames->length()) {
1854 JVMCI_THROW_MSG(IllegalStateException, "invalid frame number");
1855 }
1856
1857 // Reallocate the non-escaping objects and restore their fields.
1858 assert (virtualFrames->at(last_frame_number)->scope() != nullptr,"invalid scope");
1859 GrowableArray<ScopeValue*>* objects = virtualFrames->at(last_frame_number)->scope()->objects();
1860
1861 if (objects == nullptr) {
1862 // no objects to materialize
1863 return;
1864 }
1865
1866 bool realloc_failures = Deoptimization::realloc_objects(thread, fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, CHECK);
1867 Deoptimization::reassign_fields(fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, realloc_failures, false);
1868
1869 for (int frame_index = 0; frame_index < virtualFrames->length(); frame_index++) {
1870 compiledVFrame* cvf = virtualFrames->at(frame_index);
1871
1872 GrowableArray<ScopeValue*>* scopedValues = cvf->scope()->locals();
1873 StackValueCollection* locals = cvf->locals();
1874 if (locals != nullptr) {
1875 for (int i2 = 0; i2 < locals->size(); i2++) {
1876 StackValue* var = locals->at(i2);
1877 assert(!scopedValues->at(i2)->is_object_merge(), "Should not be.");
1878 if (var->type() == T_OBJECT && scopedValues->at(i2)->is_object()) {
1879 jvalue val;
1880 val.l = cast_from_oop<jobject>(locals->at(i2)->get_obj()());
1881 cvf->update_local(T_OBJECT, i2, val);
1882 }
1883 }
1884 }
1885
1886 GrowableArray<ScopeValue*>* scopeExpressions = cvf->scope()->expressions();
1887 StackValueCollection* expressions = cvf->expressions();
1888 if (expressions != nullptr) {
1889 for (int i2 = 0; i2 < expressions->size(); i2++) {
1890 StackValue* var = expressions->at(i2);
1891 assert(!scopeExpressions->at(i2)->is_object_merge(), "Should not be.");
1892 if (var->type() == T_OBJECT && scopeExpressions->at(i2)->is_object()) {
1893 jvalue val;
1894 val.l = cast_from_oop<jobject>(expressions->at(i2)->get_obj()());
1895 cvf->update_stack(T_OBJECT, i2, val);
1896 }
1897 }
1898 }
1899
1900 GrowableArray<MonitorValue*>* scopeMonitors = cvf->scope()->monitors();
1901 GrowableArray<MonitorInfo*>* monitors = cvf->monitors();
1902 if (monitors != nullptr) {
1903 for (int i2 = 0; i2 < monitors->length(); i2++) {
1904 cvf->update_monitor(i2, monitors->at(i2));
1905 }
1906 }
1907 }
1908
1909 // all locals are materialized by now
1910 JVMCIENV->set_HotSpotStackFrameReference_localIsVirtual(hs_frame, nullptr);
1911 // update the locals array
1912 JVMCIObjectArray array = JVMCIENV->get_HotSpotStackFrameReference_locals(hs_frame);
1913 StackValueCollection* locals = virtualFrames->at(last_frame_number)->locals();
1914 for (int i = 0; i < locals->size(); i++) {
1915 StackValue* var = locals->at(i);
1916 if (var->type() == T_OBJECT) {
1917 JVMCIENV->put_object_at(array, i, HotSpotJVMCI::wrap(locals->at(i)->get_obj()()));
1918 }
1919 }
1920 HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, hs_frame, JNI_TRUE);
1921 C2V_END
1922
1923 // Use of tty does not require the current thread to be attached to the VM
1924 // so no need for a full C2V_VMENTRY transition.
1925 C2V_VMENTRY_PREFIX(void, writeDebugOutput, (JNIEnv* env, jobject, jlong buffer, jint length, bool flush))
1926 if (length <= 8) {
1927 tty->write((char*) &buffer, length);
1928 } else {
1929 tty->write((char*) buffer, length);
1930 }
1931 if (flush) {
1932 tty->flush();
1933 }
1934 C2V_END
1935
1936 // Use of tty does not require the current thread to be attached to the VM
1937 // so no need for a full C2V_VMENTRY transition.
1938 C2V_VMENTRY_PREFIX(void, flushDebugOutput, (JNIEnv* env, jobject))
1939 tty->flush();
1940 C2V_END
1941
1942 C2V_VMENTRY_0(jint, methodDataProfileDataSize, (JNIEnv* env, jobject, jlong method_data_pointer, jint position))
1943 MethodData* mdo = (MethodData*) method_data_pointer;
1944 ProfileData* profile_data = mdo->data_at(position);
1945 if (mdo->is_valid(profile_data)) {
1946 return profile_data->size_in_bytes();
1947 }
1948 // Java code should never directly access the extra data section
1949 JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Invalid profile data position %d", position));
1950 C2V_END
1951
1952 C2V_VMENTRY_0(jint, methodDataExceptionSeen, (JNIEnv* env, jobject, jlong method_data_pointer, jint bci))
1953 MethodData* mdo = (MethodData*) method_data_pointer;
1954
1955 // Lock to read ProfileData, and ensure lock is not broken by a safepoint
1956 MutexLocker mu(mdo->extra_data_lock(), Mutex::_no_safepoint_check_flag);
1957
1958 DataLayout* data = mdo->extra_data_base();
1959 DataLayout* end = mdo->args_data_limit();
1960 for (;; data = mdo->next_extra(data)) {
1961 assert(data < end, "moved past end of extra data");
1962 int tag = data->tag();
1963 switch(tag) {
1964 case DataLayout::bit_data_tag: {
1965 BitData* bit_data = (BitData*) data->data_in();
1966 if (bit_data->bci() == bci) {
1967 return bit_data->exception_seen() ? 1 : 0;
1968 }
1969 break;
1970 }
1971 case DataLayout::no_tag:
1972 // There is a free slot so return false since a BitData would have been allocated to record
1973 // true if it had been seen.
1974 return 0;
1975 case DataLayout::arg_info_data_tag:
1976 // The bci wasn't found and there are no free slots to record a trap for this location, so always
1977 // return unknown.
1978 return -1;
1979 }
1980 }
1981 ShouldNotReachHere();
1982 return -1;
1983 C2V_END
1984
1985 C2V_VMENTRY_NULL(jobject, getInterfaces, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1986 Klass* klass = UNPACK_PAIR(Klass, klass);
1987 if (klass == nullptr) {
1988 JVMCI_THROW_NULL(NullPointerException);
1989 }
1990
1991 if (!klass->is_instance_klass()) {
1992 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Class %s must be instance klass", klass->external_name()));
1993 }
1994 InstanceKlass* iklass = InstanceKlass::cast(klass);
1995
1996 // Regular instance klass, fill in all local interfaces
1997 int size = iklass->local_interfaces()->length();
1998 JVMCIObjectArray interfaces = JVMCIENV->new_HotSpotResolvedObjectTypeImpl_array(size, JVMCI_CHECK_NULL);
1999 for (int index = 0; index < size; index++) {
2000 JVMCIKlassHandle klass(THREAD);
2001 Klass* k = iklass->local_interfaces()->at(index);
2002 klass = k;
2003 JVMCIObject type = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
2004 JVMCIENV->put_object_at(interfaces, index, type);
2005 }
2006 return JVMCIENV->get_jobject(interfaces);
2007 C2V_END
2008
2009 C2V_VMENTRY_NULL(jobject, getComponentType, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2010 Klass* klass = UNPACK_PAIR(Klass, klass);
2011 if (klass == nullptr) {
2012 JVMCI_THROW_NULL(NullPointerException);
2013 }
2014
2015 if (!klass->is_array_klass()) {
2016 return nullptr;
2017 }
2018 oop mirror = klass->java_mirror();
2019 oop component_mirror = java_lang_Class::component_mirror(mirror);
2020 if (component_mirror == nullptr) {
2021 JVMCI_THROW_MSG_NULL(NullPointerException,
2022 err_msg("Component mirror for array class %s is null", klass->external_name()))
2023 }
2024
2025 Klass* component_klass = java_lang_Class::as_Klass(component_mirror);
2026 if (component_klass != nullptr) {
2027 JVMCIKlassHandle klass_handle(THREAD, component_klass);
2028 JVMCIObject result = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL);
2029 return JVMCIENV->get_jobject(result);
2030 }
2031 BasicType type = java_lang_Class::primitive_type(component_mirror);
2032 JVMCIObject result = JVMCIENV->get_jvmci_primitive_type(type);
2033 return JVMCIENV->get_jobject(result);
2034 C2V_END
2035
2036 C2V_VMENTRY(void, ensureInitialized, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2037 Klass* klass = UNPACK_PAIR(Klass, klass);
2038 if (klass == nullptr) {
2039 JVMCI_THROW(NullPointerException);
2040 }
2041 if (klass->should_be_initialized()) {
2042 InstanceKlass* k = InstanceKlass::cast(klass);
2043 k->initialize(CHECK);
2044 }
2045 C2V_END
2046
2047 C2V_VMENTRY(void, ensureLinked, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2048 CompilerThreadCanCallJava canCallJava(thread, true); // Linking requires Java calls
2049 Klass* klass = UNPACK_PAIR(Klass, klass);
2050 if (klass == nullptr) {
2051 JVMCI_THROW(NullPointerException);
2052 }
2053 if (klass->is_instance_klass()) {
2054 InstanceKlass* k = InstanceKlass::cast(klass);
2055 k->link_class(CHECK);
2056 }
2057 C2V_END
2058
2059 C2V_VMENTRY_0(jint, interpreterFrameSize, (JNIEnv* env, jobject, jobject bytecode_frame_handle))
2060 if (bytecode_frame_handle == nullptr) {
2061 JVMCI_THROW_0(NullPointerException);
2062 }
2063
2064 JVMCIObject top_bytecode_frame = JVMCIENV->wrap(bytecode_frame_handle);
2065 JVMCIObject bytecode_frame = top_bytecode_frame;
2066 int size = 0;
2067 int callee_parameters = 0;
2068 int callee_locals = 0;
2069 Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame));
2070 int extra_args = method->max_stack() - JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame);
2071
2072 while (bytecode_frame.is_non_null()) {
2073 int locks = JVMCIENV->get_BytecodeFrame_numLocks(bytecode_frame);
2074 int temps = JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame);
2075 bool is_top_frame = (JVMCIENV->equals(bytecode_frame, top_bytecode_frame));
2076 Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame));
2077
2078 int frame_size = BytesPerWord * Interpreter::size_activation(method->max_stack(),
2079 temps + callee_parameters,
2080 extra_args,
2081 locks,
2082 callee_parameters,
2083 callee_locals,
2084 is_top_frame);
2085 size += frame_size;
2086
2087 callee_parameters = method->size_of_parameters();
2088 callee_locals = method->max_locals();
2089 extra_args = 0;
2090 bytecode_frame = JVMCIENV->get_BytecodePosition_caller(bytecode_frame);
2091 }
2092 return size + Deoptimization::last_frame_adjust(0, callee_locals) * BytesPerWord;
2093 C2V_END
2094
2095 C2V_VMENTRY(void, compileToBytecode, (JNIEnv* env, jobject, jobject lambda_form_handle))
2096 Handle lambda_form = JVMCIENV->asConstant(JVMCIENV->wrap(lambda_form_handle), JVMCI_CHECK);
2097 if (lambda_form->is_a(vmClasses::LambdaForm_klass())) {
2098 TempNewSymbol compileToBytecode = SymbolTable::new_symbol("compileToBytecode");
2099 JavaValue result(T_VOID);
2100 JavaCalls::call_special(&result, lambda_form, vmClasses::LambdaForm_klass(), compileToBytecode, vmSymbols::void_method_signature(), CHECK);
2101 } else {
2102 JVMCI_THROW_MSG(IllegalArgumentException,
2103 err_msg("Unexpected type: %s", lambda_form->klass()->external_name()))
2104 }
2105 C2V_END
2106
2107 C2V_VMENTRY_0(jint, getIdentityHashCode, (JNIEnv* env, jobject, jobject object))
2108 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
2109 return obj->identity_hash();
2110 C2V_END
2111
2112 C2V_VMENTRY_0(jboolean, isInternedString, (JNIEnv* env, jobject, jobject object))
2113 Handle str = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
2114 if (!java_lang_String::is_instance(str())) {
2115 return false;
2116 }
2117 int len;
2118 jchar* name = java_lang_String::as_unicode_string(str(), len, CHECK_false);
2119 return (StringTable::lookup(name, len) != nullptr);
2120 C2V_END
2121
2122
2123 C2V_VMENTRY_NULL(jobject, unboxPrimitive, (JNIEnv* env, jobject, jobject object))
2124 if (object == nullptr) {
2125 JVMCI_THROW_NULL(NullPointerException);
2126 }
2127 Handle box = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2128 BasicType type = java_lang_boxing_object::basic_type(box());
2129 jvalue result;
2130 if (java_lang_boxing_object::get_value(box(), &result) == T_ILLEGAL) {
2131 return nullptr;
2132 }
2133 JVMCIObject boxResult = JVMCIENV->create_box(type, &result, JVMCI_CHECK_NULL);
2134 return JVMCIENV->get_jobject(boxResult);
2135 C2V_END
2136
2137 C2V_VMENTRY_NULL(jobject, boxPrimitive, (JNIEnv* env, jobject, jobject object))
2138 if (object == nullptr) {
2139 JVMCI_THROW_NULL(NullPointerException);
2140 }
2141 JVMCIObject box = JVMCIENV->wrap(object);
2142 BasicType type = JVMCIENV->get_box_type(box);
2143 if (type == T_ILLEGAL) {
2144 return nullptr;
2145 }
2146 jvalue value = JVMCIENV->get_boxed_value(type, box);
2147 JavaValue box_result(T_OBJECT);
2148 JavaCallArguments jargs;
2149 Klass* box_klass = nullptr;
2150 Symbol* box_signature = nullptr;
2151 #define BOX_CASE(bt, v, argtype, name) \
2152 case bt: \
2153 jargs.push_##argtype(value.v); \
2154 box_klass = vmClasses::name##_klass(); \
2155 box_signature = vmSymbols::name##_valueOf_signature(); \
2156 break
2157
2158 switch (type) {
2159 BOX_CASE(T_BOOLEAN, z, int, Boolean);
2160 BOX_CASE(T_BYTE, b, int, Byte);
2161 BOX_CASE(T_CHAR, c, int, Character);
2162 BOX_CASE(T_SHORT, s, int, Short);
2163 BOX_CASE(T_INT, i, int, Integer);
2164 BOX_CASE(T_LONG, j, long, Long);
2165 BOX_CASE(T_FLOAT, f, float, Float);
2166 BOX_CASE(T_DOUBLE, d, double, Double);
2167 default:
2168 ShouldNotReachHere();
2169 }
2170 #undef BOX_CASE
2171
2172 JavaCalls::call_static(&box_result,
2173 box_klass,
2174 vmSymbols::valueOf_name(),
2175 box_signature, &jargs, CHECK_NULL);
2176 oop hotspot_box = box_result.get_oop();
2177 JVMCIObject result = JVMCIENV->get_object_constant(hotspot_box, false);
2178 return JVMCIENV->get_jobject(result);
2179 C2V_END
2180
2181 C2V_VMENTRY_NULL(jobjectArray, getDeclaredConstructors, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2182 Klass* klass = UNPACK_PAIR(Klass, klass);
2183 if (klass == nullptr) {
2184 JVMCI_THROW_NULL(NullPointerException);
2185 }
2186 if (!klass->is_instance_klass()) {
2187 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
2188 return JVMCIENV->get_jobjectArray(methods);
2189 }
2190
2191 InstanceKlass* iklass = InstanceKlass::cast(klass);
2192 GrowableArray<Method*> constructors_array;
2193 for (int i = 0; i < iklass->methods()->length(); i++) {
2194 Method* m = iklass->methods()->at(i);
2195 if (m->is_object_initializer()) {
2196 constructors_array.append(m);
2197 }
2198 }
2199 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(constructors_array.length(), JVMCI_CHECK_NULL);
2200 for (int i = 0; i < constructors_array.length(); i++) {
2201 methodHandle ctor(THREAD, constructors_array.at(i));
2202 JVMCIObject method = JVMCIENV->get_jvmci_method(ctor, JVMCI_CHECK_NULL);
2203 JVMCIENV->put_object_at(methods, i, method);
2204 }
2205 return JVMCIENV->get_jobjectArray(methods);
2206 C2V_END
2207
2208 C2V_VMENTRY_NULL(jobjectArray, getDeclaredMethods, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2209 Klass* klass = UNPACK_PAIR(Klass, klass);
2210 if (klass == nullptr) {
2211 JVMCI_THROW_NULL(NullPointerException);
2212 }
2213 if (!klass->is_instance_klass()) {
2214 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
2215 return JVMCIENV->get_jobjectArray(methods);
2216 }
2217
2218 InstanceKlass* iklass = InstanceKlass::cast(klass);
2219 GrowableArray<Method*> methods_array;
2220 for (int i = 0; i < iklass->methods()->length(); i++) {
2221 Method* m = iklass->methods()->at(i);
2222 if (!m->is_object_initializer() && !m->is_static_initializer() && !m->is_overpass()) {
2223 methods_array.append(m);
2224 }
2225 }
2226 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(methods_array.length(), JVMCI_CHECK_NULL);
2227 for (int i = 0; i < methods_array.length(); i++) {
2228 methodHandle mh(THREAD, methods_array.at(i));
2229 JVMCIObject method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
2230 JVMCIENV->put_object_at(methods, i, method);
2231 }
2232 return JVMCIENV->get_jobjectArray(methods);
2233 C2V_END
2234
2235 C2V_VMENTRY_NULL(jobjectArray, getAllMethods, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2236 Klass* klass = UNPACK_PAIR(Klass, klass);
2237 if (klass == nullptr) {
2238 JVMCI_THROW_NULL(NullPointerException);
2239 }
2240 if (!klass->is_instance_klass()) {
2241 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
2242 return JVMCIENV->get_jobjectArray(methods);
2243 }
2244
2245 InstanceKlass* iklass = InstanceKlass::cast(klass);
2246 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(iklass->methods()->length(), JVMCI_CHECK_NULL);
2247 for (int i = 0; i < iklass->methods()->length(); i++) {
2248 methodHandle mh(THREAD, iklass->methods()->at(i));
2249 JVMCIObject method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
2250 JVMCIENV->put_object_at(methods, i, method);
2251 }
2252 return JVMCIENV->get_jobjectArray(methods);
2253 C2V_END
2254
2255 C2V_VMENTRY_NULL(jobjectArray, getDeclaredFieldsInfo, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2256 Klass* klass = UNPACK_PAIR(Klass, klass);
2257 if (klass == nullptr) {
2258 JVMCI_THROW_NULL(NullPointerException);
2259 }
2260 if (!klass->is_instance_klass()) {
2261 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "not an InstanceKlass");
2262 }
2263 InstanceKlass* iklass = InstanceKlass::cast(klass);
2264 int java_fields, injected_fields;
2265 GrowableArray<FieldInfo>* fields = FieldInfoStream::create_FieldInfoArray(iklass->fieldinfo_stream(), &java_fields, &injected_fields);
2266 JVMCIObjectArray array = JVMCIENV->new_FieldInfo_array(fields->length(), JVMCIENV);
2267 for (int i = 0; i < fields->length(); i++) {
2268 JVMCIObject field_info = JVMCIENV->new_FieldInfo(fields->adr_at(i), JVMCI_CHECK_NULL);
2269 JVMCIENV->put_object_at(array, i, field_info);
2270 }
2271 return array.as_jobject();
2272 C2V_END
2273
2274 static jobject read_field_value(Handle obj, long displacement, jchar type_char, bool is_static, Thread* THREAD, JVMCIEnv* JVMCIENV) {
2275
2276 BasicType basic_type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_NULL);
2277 int basic_type_elemsize = type2aelembytes(basic_type);
2278 if (displacement < 0 || ((size_t) displacement + basic_type_elemsize > HeapWordSize * obj->size())) {
2279 // Reading outside of the object bounds
2280 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading outside object bounds");
2281 }
2282
2283 // Perform basic sanity checks on the read. Primitive reads are permitted to read outside the
2284 // bounds of their fields but object reads must map exactly onto the underlying oop slot.
2285 bool aligned = (displacement % basic_type_elemsize) == 0;
2286 if (!aligned) {
2287 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "read is unaligned");
2288 }
2289 if (obj->is_array()) {
2290 // Disallow reading after the last element of an array
2291 size_t array_length = arrayOop(obj())->length();
2292 int lh = obj->klass()->layout_helper();
2293 size_t size_in_bytes = array_length << Klass::layout_helper_log2_element_size(lh);
2294 size_in_bytes += Klass::layout_helper_header_size(lh);
2295 if ((size_t) displacement + basic_type_elemsize > size_in_bytes) {
2296 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading after last array element");
2297 }
2298 }
2299 if (basic_type == T_OBJECT) {
2300 if (obj->is_objArray()) {
2301 if (displacement < arrayOopDesc::base_offset_in_bytes(T_OBJECT)) {
2302 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header");
2303 }
2304 if (((displacement - arrayOopDesc::base_offset_in_bytes(T_OBJECT)) % heapOopSize) != 0) {
2305 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "misaligned object read from array");
2306 }
2307 } else if (obj->is_instance()) {
2308 InstanceKlass* klass = InstanceKlass::cast(is_static ? java_lang_Class::as_Klass(obj()) : obj->klass());
2309 fieldDescriptor fd;
2310 if (!klass->find_field_from_offset(displacement, is_static, &fd)) {
2311 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Can't find field at displacement %d in object of type %s", (int) displacement, klass->external_name()));
2312 }
2313 if (fd.field_type() != T_OBJECT && fd.field_type() != T_ARRAY) {
2314 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Field at displacement %d in object of type %s is %s but expected %s", (int) displacement,
2315 klass->external_name(), type2name(fd.field_type()), type2name(basic_type)));
2316 }
2317 } else if (obj->is_typeArray()) {
2318 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Can't read objects from primitive array");
2319 } else {
2320 ShouldNotReachHere();
2321 }
2322 } else {
2323 if (obj->is_objArray()) {
2324 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Reading primitive from object array");
2325 } else if (obj->is_typeArray()) {
2326 if (displacement < arrayOopDesc::base_offset_in_bytes(ArrayKlass::cast(obj->klass())->element_type())) {
2327 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header");
2328 }
2329 }
2330 }
2331
2332 jlong value = 0;
2333
2334 // Treat all reads as volatile for simplicity as this function can be used
2335 // both for reading Java fields declared as volatile as well as for constant
2336 // folding Unsafe.get* methods with volatile semantics.
2337
2338 switch (basic_type) {
2339 case T_BOOLEAN: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jboolean>(displacement)); break;
2340 case T_BYTE: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jbyte>(displacement)); break;
2341 case T_SHORT: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jshort>(displacement)); break;
2342 case T_CHAR: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jchar>(displacement)); break;
2343 case T_FLOAT:
2344 case T_INT: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jint>(displacement)); break;
2345 case T_DOUBLE:
2346 case T_LONG: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jlong>(displacement)); break;
2347
2348 case T_OBJECT: {
2349 if (displacement == java_lang_Class::component_mirror_offset() && java_lang_Class::is_instance(obj()) &&
2350 (java_lang_Class::as_Klass(obj()) == nullptr || !java_lang_Class::as_Klass(obj())->is_array_klass())) {
2351 // Class.componentType for non-array classes can transiently contain an int[] that's
2352 // used for locking so always return null to mimic Class.getComponentType()
2353 return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
2354 }
2355
2356 // Perform the read including any barriers required to make the reference strongly reachable
2357 // since it will be wrapped as a JavaConstant.
2358 oop value = obj->obj_field_access<MO_SEQ_CST | ON_UNKNOWN_OOP_REF>(displacement);
2359
2360 if (value == nullptr) {
2361 return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
2362 } else {
2363 if (value != nullptr && !oopDesc::is_oop(value)) {
2364 // Throw an exception to improve debuggability. This check isn't totally reliable because
2365 // is_oop doesn't try to be completety safe but for most invalid values it provides a good
2366 // enough answer. It possible to crash in the is_oop call but that just means the crash happens
2367 // closer to where things went wrong.
2368 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Read bad oop " INTPTR_FORMAT " at offset " JLONG_FORMAT " in object " INTPTR_FORMAT " of type %s",
2369 p2i(value), displacement, p2i(obj()), obj->klass()->external_name()));
2370 }
2371
2372 JVMCIObject result = JVMCIENV->get_object_constant(value);
2373 return JVMCIENV->get_jobject(result);
2374 }
2375 }
2376
2377 default:
2378 ShouldNotReachHere();
2379 }
2380 JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, value, JVMCI_CHECK_NULL);
2381 return JVMCIENV->get_jobject(result);
2382 }
2383
2384 C2V_VMENTRY_NULL(jobject, readStaticFieldValue, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), long displacement, jchar type_char))
2385 Klass* klass = UNPACK_PAIR(Klass, klass);
2386 Handle obj(THREAD, klass->java_mirror());
2387 return read_field_value(obj, displacement, type_char, true, THREAD, JVMCIENV);
2388 C2V_END
2389
2390 C2V_VMENTRY_NULL(jobject, readFieldValue, (JNIEnv* env, jobject, jobject object, ARGUMENT_PAIR(expected_type), long displacement, jchar type_char))
2391 if (object == nullptr) {
2392 JVMCI_THROW_NULL(NullPointerException);
2393 }
2394
2395 // asConstant will throw an NPE if a constant contains null
2396 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2397
2398 Klass* expected_klass = UNPACK_PAIR(Klass, expected_type);
2399 if (expected_klass != nullptr) {
2400 InstanceKlass* expected_iklass = InstanceKlass::cast(expected_klass);
2401 if (!obj->is_a(expected_iklass)) {
2402 // Not of the expected type
2403 return nullptr;
2404 }
2405 }
2406 bool is_static = expected_klass == nullptr && java_lang_Class::is_instance(obj()) && displacement >= InstanceMirrorKlass::offset_of_static_fields();
2407 return read_field_value(obj, displacement, type_char, is_static, THREAD, JVMCIENV);
2408 C2V_END
2409
2410 C2V_VMENTRY_0(jboolean, isInstance, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jobject object))
2411 Klass* klass = UNPACK_PAIR(Klass, klass);
2412 if (object == nullptr || klass == nullptr) {
2413 JVMCI_THROW_0(NullPointerException);
2414 }
2415 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
2416 return obj->is_a(klass);
2417 C2V_END
2418
2419 C2V_VMENTRY_0(jboolean, isAssignableFrom, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(subklass)))
2420 Klass* klass = UNPACK_PAIR(Klass, klass);
2421 Klass* subklass = UNPACK_PAIR(Klass, subklass);
2422 if (klass == nullptr || subklass == nullptr) {
2423 JVMCI_THROW_0(NullPointerException);
2424 }
2425 return subklass->is_subtype_of(klass);
2426 C2V_END
2427
2428 C2V_VMENTRY_0(jboolean, isTrustedForIntrinsics, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2429 Klass* klass = UNPACK_PAIR(Klass, klass);
2430 if (klass == nullptr) {
2431 JVMCI_THROW_0(NullPointerException);
2432 }
2433 InstanceKlass* ik = InstanceKlass::cast(klass);
2434 if (ik->class_loader_data()->is_boot_class_loader_data() || ik->class_loader_data()->is_platform_class_loader_data()) {
2435 return true;
2436 }
2437 return false;
2438 C2V_END
2439
2440 C2V_VMENTRY_NULL(jobject, asJavaType, (JNIEnv* env, jobject, jobject object))
2441 if (object == nullptr) {
2442 JVMCI_THROW_NULL(NullPointerException);
2443 }
2444 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2445 if (java_lang_Class::is_instance(obj())) {
2446 if (java_lang_Class::is_primitive(obj())) {
2447 JVMCIObject type = JVMCIENV->get_jvmci_primitive_type(java_lang_Class::primitive_type(obj()));
2448 return JVMCIENV->get_jobject(type);
2449 }
2450 Klass* klass = java_lang_Class::as_Klass(obj());
2451 JVMCIKlassHandle klass_handle(THREAD);
2452 klass_handle = klass;
2453 JVMCIObject type = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL);
2454 return JVMCIENV->get_jobject(type);
2455 }
2456 return nullptr;
2457 C2V_END
2458
2459
2460 C2V_VMENTRY_NULL(jobject, asString, (JNIEnv* env, jobject, jobject object))
2461 if (object == nullptr) {
2462 JVMCI_THROW_NULL(NullPointerException);
2463 }
2464 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2465 const char* str = java_lang_String::as_utf8_string(obj());
2466 JVMCIObject result = JVMCIENV->create_string(str, JVMCI_CHECK_NULL);
2467 return JVMCIENV->get_jobject(result);
2468 C2V_END
2469
2470
2471 C2V_VMENTRY_0(jboolean, equals, (JNIEnv* env, jobject, jobject x, jlong xHandle, jobject y, jlong yHandle))
2472 if (x == nullptr || y == nullptr) {
2473 JVMCI_THROW_0(NullPointerException);
2474 }
2475 return JVMCIENV->resolve_oop_handle(xHandle) == JVMCIENV->resolve_oop_handle(yHandle);
2476 C2V_END
2477
2478 C2V_VMENTRY_NULL(jobject, getJavaMirror, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2479 Klass* klass = UNPACK_PAIR(Klass, klass);
2480 if (klass == nullptr) {
2481 JVMCI_THROW_NULL(NullPointerException);
2482 }
2483 Handle mirror(THREAD, klass->java_mirror());
2484 JVMCIObject result = JVMCIENV->get_object_constant(mirror());
2485 return JVMCIENV->get_jobject(result);
2486 C2V_END
2487
2488
2489 C2V_VMENTRY_0(jint, getArrayLength, (JNIEnv* env, jobject, jobject x))
2490 if (x == nullptr) {
2491 JVMCI_THROW_0(NullPointerException);
2492 }
2493 Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_0);
2494 if (xobj->klass()->is_array_klass()) {
2495 return arrayOop(xobj())->length();
2496 }
2497 return -1;
2498 C2V_END
2499
2500
2501 C2V_VMENTRY_NULL(jobject, readArrayElement, (JNIEnv* env, jobject, jobject x, int index))
2502 if (x == nullptr) {
2503 JVMCI_THROW_NULL(NullPointerException);
2504 }
2505 Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_NULL);
2506 if (xobj->klass()->is_array_klass()) {
2507 arrayOop array = arrayOop(xobj());
2508 BasicType element_type = ArrayKlass::cast(array->klass())->element_type();
2509 if (index < 0 || index >= array->length()) {
2510 return nullptr;
2511 }
2512 JVMCIObject result;
2513
2514 if (element_type == T_OBJECT) {
2515 result = JVMCIENV->get_object_constant(objArrayOop(xobj())->obj_at(index));
2516 if (result.is_null()) {
2517 result = JVMCIENV->get_JavaConstant_NULL_POINTER();
2518 }
2519 } else {
2520 jvalue value;
2521 switch (element_type) {
2522 case T_DOUBLE: value.d = typeArrayOop(xobj())->double_at(index); break;
2523 case T_FLOAT: value.f = typeArrayOop(xobj())->float_at(index); break;
2524 case T_LONG: value.j = typeArrayOop(xobj())->long_at(index); break;
2525 case T_INT: value.i = typeArrayOop(xobj())->int_at(index); break;
2526 case T_SHORT: value.s = typeArrayOop(xobj())->short_at(index); break;
2527 case T_CHAR: value.c = typeArrayOop(xobj())->char_at(index); break;
2528 case T_BYTE: value.b = typeArrayOop(xobj())->byte_at(index); break;
2529 case T_BOOLEAN: value.z = typeArrayOop(xobj())->byte_at(index) & 1; break;
2530 default: ShouldNotReachHere();
2531 }
2532 result = JVMCIENV->create_box(element_type, &value, JVMCI_CHECK_NULL);
2533 }
2534 assert(!result.is_null(), "must have a value");
2535 return JVMCIENV->get_jobject(result);
2536 }
2537 return nullptr;;
2538 C2V_END
2539
2540
2541 C2V_VMENTRY_0(jint, arrayBaseOffset, (JNIEnv* env, jobject, jchar type_char))
2542 BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
2543 return arrayOopDesc::base_offset_in_bytes(type);
2544 C2V_END
2545
2546 C2V_VMENTRY_0(jint, arrayIndexScale, (JNIEnv* env, jobject, jchar type_char))
2547 BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
2548 return type2aelembytes(type);
2549 C2V_END
2550
2551 C2V_VMENTRY(void, clearOopHandle, (JNIEnv* env, jobject, jlong oop_handle))
2552 if (oop_handle == 0L) {
2553 JVMCI_THROW(NullPointerException);
2554 }
2555 // Assert before nulling out, for better debugging.
2556 assert(JVMCIRuntime::is_oop_handle(oop_handle), "precondition");
2557 oop* oop_ptr = (oop*) oop_handle;
2558 NativeAccess<>::oop_store(oop_ptr, (oop) nullptr);
2559 C2V_END
2560
2561 C2V_VMENTRY(void, releaseClearedOopHandles, (JNIEnv* env, jobject))
2562 JVMCIENV->runtime()->release_cleared_oop_handles();
2563 C2V_END
2564
2565 static void requireJVMCINativeLibrary(JVMCI_TRAPS) {
2566 if (!UseJVMCINativeLibrary) {
2567 JVMCI_THROW_MSG(UnsupportedOperationException, "JVMCI shared library is not enabled (requires -XX:+UseJVMCINativeLibrary)");
2568 }
2569 }
2570
2571 C2V_VMENTRY_NULL(jlongArray, registerNativeMethods, (JNIEnv* env, jobject, jclass mirror))
2572 requireJVMCINativeLibrary(JVMCI_CHECK_NULL);
2573 requireInHotSpot("registerNativeMethods", JVMCI_CHECK_NULL);
2574 char* sl_path;
2575 void* sl_handle;
2576 JVMCIRuntime* runtime;
2577 {
2578 // Ensure the JVMCI shared library runtime is initialized.
2579 PEER_JVMCIENV_FROM_THREAD(THREAD, false);
2580 PEER_JVMCIENV->check_init(JVMCI_CHECK_NULL);
2581
2582 HandleMark hm(THREAD);
2583 runtime = JVMCI::compiler_runtime(thread);
2584 if (PEER_JVMCIENV->has_pending_exception()) {
2585 PEER_JVMCIENV->describe_pending_exception(tty);
2586 }
2587 sl_handle = JVMCI::get_shared_library(sl_path, false);
2588 if (sl_handle == nullptr) {
2589 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Error initializing JVMCI runtime %d", runtime->id()));
2590 }
2591 }
2592
2593 if (mirror == nullptr) {
2594 JVMCI_THROW_NULL(NullPointerException);
2595 }
2596 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2597 if (klass == nullptr || !klass->is_instance_klass()) {
2598 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "clazz is for primitive type");
2599 }
2600
2601 InstanceKlass* iklass = InstanceKlass::cast(klass);
2602 for (int i = 0; i < iklass->methods()->length(); i++) {
2603 methodHandle method(THREAD, iklass->methods()->at(i));
2604 if (method->is_native()) {
2605
2606 // Compute argument size
2607 int args_size = 1 // JNIEnv
2608 + (method->is_static() ? 1 : 0) // class for static methods
2609 + method->size_of_parameters(); // actual parameters
2610
2611 // 1) Try JNI short style
2612 stringStream st;
2613 char* pure_name = NativeLookup::pure_jni_name(method);
2614 guarantee(pure_name != nullptr, "Illegal native method name encountered");
2615 st.print_raw(pure_name);
2616 char* jni_name = st.as_string();
2617
2618 address entry = (address) os::dll_lookup(sl_handle, jni_name);
2619 if (entry == nullptr) {
2620 // 2) Try JNI long style
2621 st.reset();
2622 char* long_name = NativeLookup::long_jni_name(method);
2623 guarantee(long_name != nullptr, "Illegal native method name encountered");
2624 st.print_raw(pure_name);
2625 st.print_raw(long_name);
2626 char* jni_long_name = st.as_string();
2627 entry = (address) os::dll_lookup(sl_handle, jni_long_name);
2628 if (entry == nullptr) {
2629 JVMCI_THROW_MSG_NULL(UnsatisfiedLinkError, err_msg("%s [neither %s nor %s exist in %s]",
2630 method->name_and_sig_as_C_string(),
2631 jni_name, jni_long_name, sl_path));
2632 }
2633 }
2634
2635 if (method->has_native_function() && entry != method->native_function()) {
2636 JVMCI_THROW_MSG_NULL(UnsatisfiedLinkError, err_msg("%s [cannot re-link from " PTR_FORMAT " to " PTR_FORMAT "]",
2637 method->name_and_sig_as_C_string(), p2i(method->native_function()), p2i(entry)));
2638 }
2639 method->set_native_function(entry, Method::native_bind_event_is_interesting);
2640 log_debug(jni, resolve)("[Dynamic-linking native method %s.%s ... JNI] @ " PTR_FORMAT,
2641 method->method_holder()->external_name(),
2642 method->name()->as_C_string(),
2643 p2i((void*) entry));
2644 }
2645 }
2646
2647 typeArrayOop info_oop = oopFactory::new_longArray(4, CHECK_NULL);
2648 jlongArray info = (jlongArray) JNIHandles::make_local(THREAD, info_oop);
2649 runtime->init_JavaVM_info(info, JVMCI_CHECK_NULL);
2650 return info;
2651 C2V_END
2652
2653 C2V_VMENTRY_PREFIX(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject c2vm))
2654 if (thread == nullptr || thread->libjvmci_runtime() == nullptr) {
2655 // Called from unattached JVMCI shared library thread
2656 return false;
2657 }
2658 if (thread->jni_environment() == env) {
2659 C2V_BLOCK(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject))
2660 JVMCITraceMark jtm("isCurrentThreadAttached");
2661 requireJVMCINativeLibrary(JVMCI_CHECK_0);
2662 JVMCIRuntime* runtime = thread->libjvmci_runtime();
2663 if (runtime == nullptr || !runtime->has_shared_library_javavm()) {
2664 JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in isCurrentThreadAttached");
2665 }
2666 JNIEnv* peerEnv;
2667 return runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) == JNI_OK;
2668 }
2669 return true;
2670 C2V_END
2671
2672 C2V_VMENTRY_PREFIX(jlong, getCurrentJavaThread, (JNIEnv* env, jobject c2vm))
2673 if (thread == nullptr) {
2674 // Called from unattached JVMCI shared library thread
2675 return 0L;
2676 }
2677 return (jlong) p2i(thread);
2678 C2V_END
2679
2680 // Attaches a thread started in a JVMCI shared library to a JavaThread and JVMCI runtime.
2681 static void attachSharedLibraryThread(JNIEnv* env, jbyteArray name, jboolean as_daemon) {
2682 JavaVM* javaVM = nullptr;
2683 jint res = env->GetJavaVM(&javaVM);
2684 if (res != JNI_OK) {
2685 JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Error getting shared library JavaVM from shared library JNIEnv: %d", res));
2686 }
2687 extern struct JavaVM_ main_vm;
2688 JNIEnv* hotspotEnv;
2689
2690 int name_len = env->GetArrayLength(name);
2691 char name_buf[64]; // Cannot use Resource heap as it requires a current thread
2692 int to_copy = MIN2(name_len, (int) sizeof(name_buf) - 1);
2693 env->GetByteArrayRegion(name, 0, to_copy, (jbyte*) name_buf);
2694 name_buf[to_copy] = '\0';
2695 JavaVMAttachArgs attach_args;
2696 attach_args.version = JNI_VERSION_1_2;
2697 attach_args.name = name_buf;
2698 attach_args.group = nullptr;
2699 res = as_daemon ? main_vm.AttachCurrentThreadAsDaemon((void**)&hotspotEnv, &attach_args) :
2700 main_vm.AttachCurrentThread((void**)&hotspotEnv, &attach_args);
2701 if (res != JNI_OK) {
2702 JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Trying to attach thread returned %d", res));
2703 }
2704 JavaThread* thread = JavaThread::thread_from_jni_environment(hotspotEnv);
2705 const char* attach_error;
2706 {
2707 // Transition to VM
2708 JVMCI_VM_ENTRY_MARK
2709 attach_error = JVMCIRuntime::attach_shared_library_thread(thread, javaVM);
2710 // Transition back to Native
2711 }
2712 if (attach_error != nullptr) {
2713 JNI_THROW("attachCurrentThread", InternalError, attach_error);
2714 }
2715 }
2716
2717 C2V_VMENTRY_PREFIX(jboolean, attachCurrentThread, (JNIEnv* env, jobject c2vm, jbyteArray name, jboolean as_daemon, jlongArray javaVM_info))
2718 if (thread == nullptr) {
2719 attachSharedLibraryThread(env, name, as_daemon);
2720 return true;
2721 }
2722 if (thread->jni_environment() == env) {
2723 // Called from HotSpot
2724 C2V_BLOCK(jboolean, attachCurrentThread, (JNIEnv* env, jobject, jboolean))
2725 JVMCITraceMark jtm("attachCurrentThread");
2726 requireJVMCINativeLibrary(JVMCI_CHECK_0);
2727
2728 JVMCIRuntime* runtime = JVMCI::compiler_runtime(thread);
2729 JNIEnv* peerJNIEnv;
2730 if (runtime->has_shared_library_javavm()) {
2731 if (runtime->GetEnv(thread, (void**)&peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) {
2732 // Already attached
2733 runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0);
2734 return false;
2735 }
2736 }
2737
2738 {
2739 // Ensure the JVMCI shared library runtime is initialized.
2740 PEER_JVMCIENV_FROM_THREAD(THREAD, false);
2741 PEER_JVMCIENV->check_init(JVMCI_CHECK_0);
2742
2743 HandleMark hm(thread);
2744 JVMCIObject receiver = runtime->get_HotSpotJVMCIRuntime(PEER_JVMCIENV);
2745 if (PEER_JVMCIENV->has_pending_exception()) {
2746 PEER_JVMCIENV->describe_pending_exception(tty);
2747 }
2748 char* sl_path;
2749 if (JVMCI::get_shared_library(sl_path, false) == nullptr) {
2750 JVMCI_THROW_MSG_0(InternalError, "Error initializing JVMCI runtime");
2751 }
2752 }
2753
2754 JavaVMAttachArgs attach_args;
2755 attach_args.version = JNI_VERSION_1_2;
2756 attach_args.name = const_cast<char*>(thread->name());
2757 attach_args.group = nullptr;
2758 if (runtime->GetEnv(thread, (void**) &peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) {
2759 return false;
2760 }
2761 jint res = as_daemon ? runtime->AttachCurrentThreadAsDaemon(thread, (void**) &peerJNIEnv, &attach_args) :
2762 runtime->AttachCurrentThread(thread, (void**) &peerJNIEnv, &attach_args);
2763
2764 if (res == JNI_OK) {
2765 guarantee(peerJNIEnv != nullptr, "must be");
2766 runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0);
2767 JVMCI_event_1("attached to JavaVM[" JLONG_FORMAT "] for JVMCI runtime %d", runtime->get_shared_library_javavm_id(), runtime->id());
2768 return true;
2769 }
2770 JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, attach_args.name));
2771 }
2772 // Called from JVMCI shared library
2773 return false;
2774 C2V_END
2775
2776 C2V_VMENTRY_PREFIX(jboolean, detachCurrentThread, (JNIEnv* env, jobject c2vm, jboolean release))
2777 if (thread == nullptr) {
2778 // Called from unattached JVMCI shared library thread
2779 JNI_THROW_("detachCurrentThread", IllegalStateException, "Cannot detach non-attached thread", false);
2780 }
2781 if (thread->jni_environment() == env) {
2782 // Called from HotSpot
2783 C2V_BLOCK(void, detachCurrentThread, (JNIEnv* env, jobject))
2784 JVMCITraceMark jtm("detachCurrentThread");
2785 requireJVMCINativeLibrary(JVMCI_CHECK_0);
2786 requireInHotSpot("detachCurrentThread", JVMCI_CHECK_0);
2787 JVMCIRuntime* runtime = thread->libjvmci_runtime();
2788 if (runtime == nullptr || !runtime->has_shared_library_javavm()) {
2789 JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in detachCurrentThread");
2790 }
2791 JNIEnv* peerEnv;
2792
2793 if (runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) != JNI_OK) {
2794 JVMCI_THROW_MSG_0(IllegalStateException, err_msg("Cannot detach non-attached thread: %s", thread->name()));
2795 }
2796 jint res = runtime->DetachCurrentThread(thread);
2797 if (res != JNI_OK) {
2798 JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, thread->name()));
2799 }
2800 JVMCI_event_1("detached from JavaVM[" JLONG_FORMAT "] for JVMCI runtime %d",
2801 runtime->get_shared_library_javavm_id(), runtime->id());
2802 if (release) {
2803 return runtime->detach_thread(thread, "user thread detach");
2804 }
2805 } else {
2806 // Called from attached JVMCI shared library thread
2807 if (release) {
2808 JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread cannot release JVMCI shared library JavaVM", false);
2809 }
2810 JVMCIRuntime* runtime = thread->libjvmci_runtime();
2811 if (runtime == nullptr) {
2812 JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread should have a JVMCI runtime", false);
2813 }
2814 {
2815 // Transition to VM
2816 C2V_BLOCK(jboolean, detachCurrentThread, (JNIEnv* env, jobject))
2817 // Cannot destroy shared library JavaVM as we're about to return to it.
2818 runtime->detach_thread(thread, "shared library thread detach", false);
2819 JVMCI_event_1("detaching JVMCI shared library thread from HotSpot JavaVM");
2820 // Transition back to Native
2821 }
2822 extern struct JavaVM_ main_vm;
2823 jint res = main_vm.DetachCurrentThread();
2824 if (res != JNI_OK) {
2825 JNI_THROW_("detachCurrentThread", InternalError, "Cannot detach non-attached thread", false);
2826 }
2827 }
2828 return false;
2829 C2V_END
2830
2831 C2V_VMENTRY_0(jlong, translate, (JNIEnv* env, jobject, jobject obj_handle, jboolean callPostTranslation))
2832 requireJVMCINativeLibrary(JVMCI_CHECK_0);
2833 if (obj_handle == nullptr) {
2834 return 0L;
2835 }
2836 PEER_JVMCIENV_FROM_THREAD(THREAD, !JVMCIENV->is_hotspot());
2837 CompilerThreadCanCallJava canCallJava(thread, PEER_JVMCIENV->is_hotspot());
2838 PEER_JVMCIENV->check_init(JVMCI_CHECK_0);
2839
2840 JVMCIEnv* thisEnv = JVMCIENV;
2841 JVMCIObject obj = thisEnv->wrap(obj_handle);
2842 JVMCIObject result;
2843 if (thisEnv->isa_HotSpotResolvedJavaMethodImpl(obj)) {
2844 methodHandle method(THREAD, thisEnv->asMethod(obj));
2845 result = PEER_JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_0);
2846 } else if (thisEnv->isa_HotSpotResolvedObjectTypeImpl(obj)) {
2847 Klass* klass = thisEnv->asKlass(obj);
2848 JVMCIKlassHandle klass_handle(THREAD);
2849 klass_handle = klass;
2850 result = PEER_JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_0);
2851 } else if (thisEnv->isa_HotSpotResolvedPrimitiveType(obj)) {
2852 BasicType type = JVMCIENV->kindToBasicType(JVMCIENV->get_HotSpotResolvedPrimitiveType_kind(obj), JVMCI_CHECK_0);
2853 result = PEER_JVMCIENV->get_jvmci_primitive_type(type);
2854 } else if (thisEnv->isa_IndirectHotSpotObjectConstantImpl(obj) ||
2855 thisEnv->isa_DirectHotSpotObjectConstantImpl(obj)) {
2856 Handle constant = thisEnv->asConstant(obj, JVMCI_CHECK_0);
2857 result = PEER_JVMCIENV->get_object_constant(constant());
2858 } else if (thisEnv->isa_HotSpotNmethod(obj)) {
2859 if (PEER_JVMCIENV->is_hotspot()) {
2860 JVMCINMethodHandle nmethod_handle(THREAD);
2861 nmethod* nm = JVMCIENV->get_nmethod(obj, nmethod_handle);
2862 if (nm != nullptr) {
2863 JVMCINMethodData* data = nm->jvmci_nmethod_data();
2864 if (data != nullptr) {
2865 // Only the mirror in the HotSpot heap is accessible
2866 // through JVMCINMethodData
2867 oop nmethod_mirror = data->get_nmethod_mirror(nm);
2868 if (nmethod_mirror != nullptr) {
2869 result = HotSpotJVMCI::wrap(nmethod_mirror);
2870 }
2871 }
2872 }
2873 }
2874
2875 if (result.is_null()) {
2876 JVMCIObject methodObject = thisEnv->get_HotSpotNmethod_method(obj);
2877 methodHandle mh(THREAD, thisEnv->asMethod(methodObject));
2878 jboolean isDefault = thisEnv->get_HotSpotNmethod_isDefault(obj);
2879 jlong compileIdSnapshot = thisEnv->get_HotSpotNmethod_compileIdSnapshot(obj);
2880 JVMCIObject name_string = thisEnv->get_InstalledCode_name(obj);
2881 const char* cstring = name_string.is_null() ? nullptr : thisEnv->as_utf8_string(name_string);
2882 // Create a new HotSpotNmethod instance in the peer runtime
2883 result = PEER_JVMCIENV->new_HotSpotNmethod(mh, cstring, isDefault, compileIdSnapshot, JVMCI_CHECK_0);
2884 JVMCINMethodHandle nmethod_handle(THREAD);
2885 nmethod* nm = JVMCIENV->get_nmethod(obj, nmethod_handle);
2886 if (result.is_null()) {
2887 // exception occurred (e.g. OOME) creating a new HotSpotNmethod
2888 } else if (nm == nullptr) {
2889 // nmethod must have been unloaded
2890 } else {
2891 // Link the new HotSpotNmethod to the nmethod
2892 PEER_JVMCIENV->initialize_installed_code(result, nm, JVMCI_CHECK_0);
2893 // Only non-default HotSpotNmethod instances in the HotSpot heap are tracked directly by the runtime.
2894 if (!isDefault && PEER_JVMCIENV->is_hotspot()) {
2895 JVMCINMethodData* data = nm->jvmci_nmethod_data();
2896 if (data == nullptr) {
2897 JVMCI_THROW_MSG_0(IllegalArgumentException, "Missing HotSpotNmethod data");
2898 }
2899 if (data->get_nmethod_mirror(nm) != nullptr) {
2900 JVMCI_THROW_MSG_0(IllegalArgumentException, "Cannot overwrite existing HotSpotNmethod mirror for nmethod");
2901 }
2902 oop nmethod_mirror = HotSpotJVMCI::resolve(result);
2903 data->set_nmethod_mirror(nm, nmethod_mirror);
2904 }
2905 }
2906 }
2907 } else {
2908 JVMCI_THROW_MSG_0(IllegalArgumentException,
2909 err_msg("Cannot translate object of type: %s", thisEnv->klass_name(obj)));
2910 }
2911 if (callPostTranslation) {
2912 PEER_JVMCIENV->call_HotSpotJVMCIRuntime_postTranslation(result, JVMCI_CHECK_0);
2913 }
2914 // Propagate any exception that occurred while creating the translated object
2915 if (PEER_JVMCIENV->transfer_pending_exception(thread, thisEnv)) {
2916 return 0L;
2917 }
2918 return (jlong) PEER_JVMCIENV->make_global(result).as_jobject();
2919 C2V_END
2920
2921 C2V_VMENTRY_NULL(jobject, unhand, (JNIEnv* env, jobject, jlong obj_handle))
2922 requireJVMCINativeLibrary(JVMCI_CHECK_NULL);
2923 if (obj_handle == 0L) {
2924 return nullptr;
2925 }
2926 jobject global_handle = (jobject) obj_handle;
2927 JVMCIObject global_handle_obj = JVMCIENV->wrap(global_handle);
2928 jobject result = JVMCIENV->make_local(global_handle_obj).as_jobject();
2929
2930 JVMCIENV->destroy_global(global_handle_obj);
2931 return result;
2932 C2V_END
2933
2934 C2V_VMENTRY(void, updateHotSpotNmethod, (JNIEnv* env, jobject, jobject code_handle))
2935 JVMCIObject code = JVMCIENV->wrap(code_handle);
2936 // Execute this operation for the side effect of updating the InstalledCode state
2937 JVMCINMethodHandle nmethod_handle(THREAD);
2938 JVMCIENV->get_nmethod(code, nmethod_handle);
2939 C2V_END
2940
2941 C2V_VMENTRY_NULL(jbyteArray, getCode, (JNIEnv* env, jobject, jobject code_handle))
2942 JVMCIObject code = JVMCIENV->wrap(code_handle);
2943 CodeBlob* cb = JVMCIENV->get_code_blob(code);
2944 if (cb == nullptr) {
2945 return nullptr;
2946 }
2947 // Make a resource copy of code before the allocation causes a safepoint
2948 int code_size = cb->code_size();
2949 jbyte* code_bytes = NEW_RESOURCE_ARRAY(jbyte, code_size);
2950 memcpy(code_bytes, (jbyte*) cb->code_begin(), code_size);
2951
2952 JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL);
2953 JVMCIENV->copy_bytes_from(code_bytes, result, 0, code_size);
2954 return JVMCIENV->get_jbyteArray(result);
2955 C2V_END
2956
2957 C2V_VMENTRY_NULL(jobject, asReflectionExecutable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
2958 requireInHotSpot("asReflectionExecutable", JVMCI_CHECK_NULL);
2959 methodHandle m(THREAD, UNPACK_PAIR(Method, method));
2960 oop executable;
2961 if (m->is_object_initializer()) {
2962 executable = Reflection::new_constructor(m, CHECK_NULL);
2963 } else if (m->is_static_initializer()) {
2964 JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2965 "Cannot create java.lang.reflect.Method for class initializer");
2966 } else {
2967 executable = Reflection::new_method(m, false, CHECK_NULL);
2968 }
2969 return JNIHandles::make_local(THREAD, executable);
2970 C2V_END
2971
2972 static InstanceKlass* check_field(Klass* klass, jint index, JVMCI_TRAPS) {
2973 if (!klass->is_instance_klass()) {
2974 JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2975 err_msg("Expected non-primitive type, got %s", klass->external_name()));
2976 }
2977 InstanceKlass* iklass = InstanceKlass::cast(klass);
2978 if (index < 0 || index > iklass->total_fields_count()) {
2979 JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2980 err_msg("Field index %d out of bounds for %s", index, klass->external_name()));
2981 }
2982 return iklass;
2983 }
2984
2985 C2V_VMENTRY_NULL(jobject, asReflectionField, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jint index))
2986 requireInHotSpot("asReflectionField", JVMCI_CHECK_NULL);
2987 Klass* klass = UNPACK_PAIR(Klass, klass);
2988 InstanceKlass* iklass = check_field(klass, index, JVMCIENV);
2989 fieldDescriptor fd(iklass, index);
2990 oop reflected = Reflection::new_field(&fd, CHECK_NULL);
2991 return JNIHandles::make_local(THREAD, reflected);
2992 C2V_END
2993
2994 static jbyteArray get_encoded_annotation_data(InstanceKlass* holder, AnnotationArray* annotations_array, bool for_class,
2995 jint filter_length, jlong filter_klass_pointers,
2996 JavaThread* THREAD, JVMCIEnv* JVMCIENV) {
2997 // Get a ConstantPool object for annotation parsing
2998 Handle jcp = reflect_ConstantPool::create(CHECK_NULL);
2999 reflect_ConstantPool::set_cp(jcp(), holder->constants());
3000
3001 // load VMSupport
3002 Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport();
3003 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK_NULL);
3004
3005 InstanceKlass* vm_support = InstanceKlass::cast(k);
3006 if (vm_support->should_be_initialized()) {
3007 vm_support->initialize(CHECK_NULL);
3008 }
3009
3010 typeArrayOop annotations_oop = Annotations::make_java_array(annotations_array, CHECK_NULL);
3011 typeArrayHandle annotations = typeArrayHandle(THREAD, annotations_oop);
3012
3013 InstanceKlass** filter = filter_length == 1 ?
3014 (InstanceKlass**) &filter_klass_pointers:
3015 (InstanceKlass**) filter_klass_pointers;
3016 objArrayOop filter_oop = oopFactory::new_objArray(vmClasses::Class_klass(), filter_length, CHECK_NULL);
3017 objArrayHandle filter_classes(THREAD, filter_oop);
3018 for (int i = 0; i < filter_length; i++) {
3019 filter_classes->obj_at_put(i, filter[i]->java_mirror());
3020 }
3021
3022 // invoke VMSupport.encodeAnnotations
3023 JavaValue result(T_OBJECT);
3024 JavaCallArguments args;
3025 args.push_oop(annotations);
3026 args.push_oop(Handle(THREAD, holder->java_mirror()));
3027 args.push_oop(jcp);
3028 args.push_int(for_class);
3029 args.push_oop(filter_classes);
3030 Symbol* signature = vmSymbols::encodeAnnotations_signature();
3031 JavaCalls::call_static(&result,
3032 vm_support,
3033 vmSymbols::encodeAnnotations_name(),
3034 signature,
3035 &args,
3036 CHECK_NULL);
3037
3038 oop res = result.get_oop();
3039 if (JVMCIENV->is_hotspot()) {
3040 return (jbyteArray) JNIHandles::make_local(THREAD, res);
3041 }
3042
3043 typeArrayOop ba = typeArrayOop(res);
3044 int ba_len = ba->length();
3045 jbyte* ba_buf = NEW_RESOURCE_ARRAY_IN_THREAD_RETURN_NULL(THREAD, jbyte, ba_len);
3046 if (ba_buf == nullptr) {
3047 JVMCI_THROW_MSG_NULL(InternalError,
3048 err_msg("could not allocate %d bytes", ba_len));
3049
3050 }
3051 memcpy(ba_buf, ba->byte_at_addr(0), ba_len);
3052 JVMCIPrimitiveArray ba_dest = JVMCIENV->new_byteArray(ba_len, JVMCI_CHECK_NULL);
3053 JVMCIENV->copy_bytes_from(ba_buf, ba_dest, 0, ba_len);
3054 return JVMCIENV->get_jbyteArray(ba_dest);
3055 }
3056
3057 C2V_VMENTRY_NULL(jbyteArray, getEncodedClassAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass),
3058 jobject filter, jint filter_length, jlong filter_klass_pointers))
3059 CompilerThreadCanCallJava canCallJava(thread, true); // Requires Java support
3060 InstanceKlass* holder = InstanceKlass::cast(UNPACK_PAIR(Klass, klass));
3061 return get_encoded_annotation_data(holder, holder->class_annotations(), true, filter_length, filter_klass_pointers, THREAD, JVMCIENV);
3062 C2V_END
3063
3064 C2V_VMENTRY_NULL(jbyteArray, getEncodedExecutableAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(method),
3065 jobject filter, jint filter_length, jlong filter_klass_pointers))
3066 CompilerThreadCanCallJava canCallJava(thread, true); // Requires Java support
3067 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
3068 return get_encoded_annotation_data(method->method_holder(), method->annotations(), false, filter_length, filter_klass_pointers, THREAD, JVMCIENV);
3069 C2V_END
3070
3071 C2V_VMENTRY_NULL(jbyteArray, getEncodedFieldAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jint index,
3072 jobject filter, jint filter_length, jlong filter_klass_pointers))
3073 CompilerThreadCanCallJava canCallJava(thread, true); // Requires Java support
3074 InstanceKlass* holder = check_field(InstanceKlass::cast(UNPACK_PAIR(Klass, klass)), index, JVMCIENV);
3075 fieldDescriptor fd(holder, index);
3076 return get_encoded_annotation_data(holder, fd.annotations(), false, filter_length, filter_klass_pointers, THREAD, JVMCIENV);
3077 C2V_END
3078
3079 C2V_VMENTRY_NULL(jobjectArray, getFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address, jobjectArray current))
3080 FailedSpeculation* head = *((FailedSpeculation**)(address) failed_speculations_address);
3081 int result_length = 0;
3082 for (FailedSpeculation* fs = head; fs != nullptr; fs = fs->next()) {
3083 result_length++;
3084 }
3085 int current_length = 0;
3086 JVMCIObjectArray current_array = nullptr;
3087 if (current != nullptr) {
3088 current_array = JVMCIENV->wrap(current);
3089 current_length = JVMCIENV->get_length(current_array);
3090 if (current_length == result_length) {
3091 // No new failures
3092 return current;
3093 }
3094 }
3095 JVMCIObjectArray result = JVMCIENV->new_byte_array_array(result_length, JVMCI_CHECK_NULL);
3096 int result_index = 0;
3097 for (FailedSpeculation* fs = head; result_index < result_length; fs = fs->next()) {
3098 assert(fs != nullptr, "npe");
3099 JVMCIPrimitiveArray entry;
3100 if (result_index < current_length) {
3101 entry = (JVMCIPrimitiveArray) JVMCIENV->get_object_at(current_array, result_index);
3102 } else {
3103 entry = JVMCIENV->new_byteArray(fs->data_len(), JVMCI_CHECK_NULL);
3104 JVMCIENV->copy_bytes_from((jbyte*) fs->data(), entry, 0, fs->data_len());
3105 }
3106 JVMCIENV->put_object_at(result, result_index++, entry);
3107 }
3108 return JVMCIENV->get_jobjectArray(result);
3109 C2V_END
3110
3111 C2V_VMENTRY_0(jlong, getFailedSpeculationsAddress, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
3112 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
3113 MethodData* method_data = get_profiling_method_data(method, CHECK_0);
3114 return (jlong) method_data->get_failed_speculations_address();
3115 C2V_END
3116
3117 C2V_VMENTRY(void, releaseFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address))
3118 FailedSpeculation::free_failed_speculations((FailedSpeculation**)(address) failed_speculations_address);
3119 C2V_END
3120
3121 C2V_VMENTRY_0(jboolean, addFailedSpeculation, (JNIEnv* env, jobject, jlong failed_speculations_address, jbyteArray speculation_obj))
3122 JVMCIPrimitiveArray speculation_handle = JVMCIENV->wrap(speculation_obj);
3123 int speculation_len = JVMCIENV->get_length(speculation_handle);
3124 char* speculation = NEW_RESOURCE_ARRAY(char, speculation_len);
3125 JVMCIENV->copy_bytes_to(speculation_handle, (jbyte*) speculation, 0, speculation_len);
3126 return FailedSpeculation::add_failed_speculation(nullptr, (FailedSpeculation**)(address) failed_speculations_address, (address) speculation, speculation_len);
3127 C2V_END
3128
3129 C2V_VMENTRY(void, callSystemExit, (JNIEnv* env, jobject, jint status))
3130 if (!JVMCIENV->is_hotspot()) {
3131 // It's generally not safe to call Java code before the module system is initialized
3132 if (!Universe::is_module_initialized()) {
3133 JVMCI_event_1("callSystemExit(%d) before Universe::is_module_initialized() -> direct VM exit", status);
3134 vm_exit_during_initialization();
3135 }
3136 }
3137 CompilerThreadCanCallJava canCallJava(thread, true);
3138 JavaValue result(T_VOID);
3139 JavaCallArguments jargs(1);
3140 jargs.push_int(status);
3141 JavaCalls::call_static(&result,
3142 vmClasses::System_klass(),
3143 vmSymbols::exit_method_name(),
3144 vmSymbols::int_void_signature(),
3145 &jargs,
3146 CHECK);
3147 C2V_END
3148
3149 C2V_VMENTRY_0(jlong, ticksNow, (JNIEnv* env, jobject))
3150 return CompilerEvent::ticksNow();
3151 C2V_END
3152
3153 C2V_VMENTRY_0(jint, registerCompilerPhase, (JNIEnv* env, jobject, jstring jphase_name))
3154 #if INCLUDE_JFR
3155 JVMCIObject phase_name = JVMCIENV->wrap(jphase_name);
3156 const char *name = JVMCIENV->as_utf8_string(phase_name);
3157 return CompilerEvent::PhaseEvent::get_phase_id(name, true, true, true);
3158 #else
3159 return -1;
3160 #endif // !INCLUDE_JFR
3161 C2V_END
3162
3163 C2V_VMENTRY(void, notifyCompilerPhaseEvent, (JNIEnv* env, jobject, jlong startTime, jint phase, jint compileId, jint level))
3164 EventCompilerPhase event(UNTIMED);
3165 if (event.should_commit()) {
3166 CompilerEvent::PhaseEvent::post(event, startTime, phase, compileId, level);
3167 }
3168 C2V_END
3169
3170 C2V_VMENTRY(void, notifyCompilerInliningEvent, (JNIEnv* env, jobject, jint compileId, ARGUMENT_PAIR(caller), ARGUMENT_PAIR(callee), jboolean succeeded, jstring jmessage, jint bci))
3171 EventCompilerInlining event;
3172 if (event.should_commit()) {
3173 Method* caller = UNPACK_PAIR(Method, caller);
3174 Method* callee = UNPACK_PAIR(Method, callee);
3175 JVMCIObject message = JVMCIENV->wrap(jmessage);
3176 CompilerEvent::InlineEvent::post(event, compileId, caller, callee, succeeded, JVMCIENV->as_utf8_string(message), bci);
3177 }
3178 C2V_END
3179
3180 C2V_VMENTRY(void, setThreadLocalObject, (JNIEnv* env, jobject, jint id, jobject value))
3181 requireInHotSpot("setThreadLocalObject", JVMCI_CHECK);
3182 if (id == 0) {
3183 thread->set_jvmci_reserved_oop0(JNIHandles::resolve(value));
3184 return;
3185 }
3186 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
3187 err_msg("%d is not a valid thread local id", id));
3188 C2V_END
3189
3190 C2V_VMENTRY_NULL(jobject, getThreadLocalObject, (JNIEnv* env, jobject, jint id))
3191 requireInHotSpot("getThreadLocalObject", JVMCI_CHECK_NULL);
3192 if (id == 0) {
3193 return JNIHandles::make_local(thread->get_jvmci_reserved_oop0());
3194 }
3195 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(),
3196 err_msg("%d is not a valid thread local id", id));
3197 C2V_END
3198
3199 C2V_VMENTRY(void, setThreadLocalLong, (JNIEnv* env, jobject, jint id, jlong value))
3200 requireInHotSpot("setThreadLocalLong", JVMCI_CHECK);
3201 if (id == 0) {
3202 thread->set_jvmci_reserved0(value);
3203 } else if (id == 1) {
3204 thread->set_jvmci_reserved1(value);
3205 } else {
3206 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
3207 err_msg("%d is not a valid thread local id", id));
3208 }
3209 C2V_END
3210
3211 C2V_VMENTRY_0(jlong, getThreadLocalLong, (JNIEnv* env, jobject, jint id))
3212 requireInHotSpot("getThreadLocalLong", JVMCI_CHECK_0);
3213 if (id == 0) {
3214 return thread->get_jvmci_reserved0();
3215 } else if (id == 1) {
3216 return thread->get_jvmci_reserved1();
3217 } else {
3218 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
3219 err_msg("%d is not a valid thread local id", id));
3220 }
3221 C2V_END
3222
3223 C2V_VMENTRY(void, getOopMapAt, (JNIEnv* env, jobject, ARGUMENT_PAIR(method),
3224 jint bci, jlongArray oop_map_handle))
3225 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
3226 if (bci < 0 || bci >= method->code_size()) {
3227 JVMCI_THROW_MSG(IllegalArgumentException,
3228 err_msg("bci %d is out of bounds [0 .. %d)", bci, method->code_size()));
3229 }
3230 InterpreterOopMap mask;
3231 OopMapCache::compute_one_oop_map(method, bci, &mask);
3232 if (!mask.has_valid_mask()) {
3233 JVMCI_THROW_MSG(IllegalArgumentException, err_msg("bci %d is not valid", bci));
3234 }
3235 if (mask.number_of_entries() == 0) {
3236 return;
3237 }
3238
3239 int nslots = method->max_locals() + method->max_stack();
3240 int nwords = ((nslots - 1) / 64) + 1;
3241 JVMCIPrimitiveArray oop_map = JVMCIENV->wrap(oop_map_handle);
3242 int oop_map_len = JVMCIENV->get_length(oop_map);
3243 if (nwords > oop_map_len) {
3244 JVMCI_THROW_MSG(IllegalArgumentException,
3245 err_msg("oop map too short: %d > %d", nwords, oop_map_len));
3246 }
3247
3248 jlong* oop_map_buf = NEW_RESOURCE_ARRAY_IN_THREAD_RETURN_NULL(THREAD, jlong, nwords);
3249 if (oop_map_buf == nullptr) {
3250 JVMCI_THROW_MSG(InternalError, err_msg("could not allocate %d longs", nwords));
3251 }
3252 for (int i = 0; i < nwords; i++) {
3253 oop_map_buf[i] = 0L;
3254 }
3255
3256 BitMapView oop_map_view = BitMapView((BitMap::bm_word_t*) oop_map_buf, nwords * BitsPerLong);
3257 for (int i = 0; i < nslots; i++) {
3258 if (mask.is_oop(i)) {
3259 oop_map_view.set_bit(i);
3260 }
3261 }
3262 JVMCIENV->copy_longs_from((jlong*)oop_map_buf, oop_map, 0, nwords);
3263 C2V_END
3264
3265 C2V_VMENTRY_0(jint, getCompilationActivityMode, (JNIEnv* env, jobject))
3266 return CompileBroker::get_compilation_activity_mode();
3267 C2V_END
3268
3269 C2V_VMENTRY_0(jboolean, isCompilerThread, (JNIEnv* env, jobject))
3270 return thread->is_Compiler_thread();
3271 C2V_END
3272
3273 #define CC (char*) /*cast a literal from (const char*)*/
3274 #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &(c2v_ ## f))
3275
3276 #define STRING "Ljava/lang/String;"
3277 #define OBJECT "Ljava/lang/Object;"
3278 #define CLASS "Ljava/lang/Class;"
3279 #define OBJECTCONSTANT "Ljdk/vm/ci/hotspot/HotSpotObjectConstantImpl;"
3280 #define EXECUTABLE "Ljava/lang/reflect/Executable;"
3281 #define STACK_TRACE_ELEMENT "Ljava/lang/StackTraceElement;"
3282 #define INSTALLED_CODE "Ljdk/vm/ci/code/InstalledCode;"
3283 #define BYTECODE_FRAME "Ljdk/vm/ci/code/BytecodeFrame;"
3284 #define JAVACONSTANT "Ljdk/vm/ci/meta/JavaConstant;"
3285 #define INSPECTED_FRAME_VISITOR "Ljdk/vm/ci/code/stack/InspectedFrameVisitor;"
3286 #define RESOLVED_METHOD "Ljdk/vm/ci/meta/ResolvedJavaMethod;"
3287 #define FIELDINFO "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl$FieldInfo;"
3288 #define HS_RESOLVED_TYPE "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaType;"
3289 #define HS_INSTALLED_CODE "Ljdk/vm/ci/hotspot/HotSpotInstalledCode;"
3290 #define HS_NMETHOD "Ljdk/vm/ci/hotspot/HotSpotNmethod;"
3291 #define HS_COMPILED_CODE "Ljdk/vm/ci/hotspot/HotSpotCompiledCode;"
3292 #define HS_CONFIG "Ljdk/vm/ci/hotspot/HotSpotVMConfig;"
3293 #define HS_STACK_FRAME_REF "Ljdk/vm/ci/hotspot/HotSpotStackFrameReference;"
3294 #define HS_SPECULATION_LOG "Ljdk/vm/ci/hotspot/HotSpotSpeculationLog;"
3295 #define REFLECTION_EXECUTABLE "Ljava/lang/reflect/Executable;"
3296 #define REFLECTION_FIELD "Ljava/lang/reflect/Field;"
3297
3298 // Types wrapping VM pointers. The ...2 macro is for a pair: (wrapper, pointer)
3299 #define HS_METHOD "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;"
3300 #define HS_METHOD2 "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;J"
3301 #define HS_KLASS "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;"
3302 #define HS_KLASS2 "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;J"
3303 #define HS_CONSTANT_POOL "Ljdk/vm/ci/hotspot/HotSpotConstantPool;"
3304 #define HS_CONSTANT_POOL2 "Ljdk/vm/ci/hotspot/HotSpotConstantPool;J"
3305
3306 JNINativeMethod CompilerToVM::methods[] = {
3307 {CC "getBytecode", CC "(" HS_METHOD2 ")[B", FN_PTR(getBytecode)},
3308 {CC "getExceptionTableStart", CC "(" HS_METHOD2 ")J", FN_PTR(getExceptionTableStart)},
3309 {CC "getExceptionTableLength", CC "(" HS_METHOD2 ")I", FN_PTR(getExceptionTableLength)},
3310 {CC "findUniqueConcreteMethod", CC "(" HS_KLASS2 HS_METHOD2 ")" HS_METHOD, FN_PTR(findUniqueConcreteMethod)},
3311 {CC "getImplementor", CC "(" HS_KLASS2 ")" HS_KLASS, FN_PTR(getImplementor)},
3312 {CC "getStackTraceElement", CC "(" HS_METHOD2 "I)" STACK_TRACE_ELEMENT, FN_PTR(getStackTraceElement)},
3313 {CC "methodIsIgnoredBySecurityStackWalk", CC "(" HS_METHOD2 ")Z", FN_PTR(methodIsIgnoredBySecurityStackWalk)},
3314 {CC "setNotInlinableOrCompilable", CC "(" HS_METHOD2 ")V", FN_PTR(setNotInlinableOrCompilable)},
3315 {CC "isCompilable", CC "(" HS_METHOD2 ")Z", FN_PTR(isCompilable)},
3316 {CC "hasNeverInlineDirective", CC "(" HS_METHOD2 ")Z", FN_PTR(hasNeverInlineDirective)},
3317 {CC "shouldInlineMethod", CC "(" HS_METHOD2 ")Z", FN_PTR(shouldInlineMethod)},
3318 {CC "lookupType", CC "(" STRING HS_KLASS2 "IZ)" HS_RESOLVED_TYPE, FN_PTR(lookupType)},
3319 {CC "lookupJClass", CC "(J)" HS_RESOLVED_TYPE, FN_PTR(lookupJClass)},
3320 {CC "getJObjectValue", CC "(" OBJECTCONSTANT ")J", FN_PTR(getJObjectValue)},
3321 {CC "getArrayType", CC "(C" HS_KLASS2 ")" HS_KLASS, FN_PTR(getArrayType)},
3322 {CC "lookupClass", CC "(" CLASS ")" HS_RESOLVED_TYPE, FN_PTR(lookupClass)},
3323 {CC "lookupNameInPool", CC "(" HS_CONSTANT_POOL2 "II)" STRING, FN_PTR(lookupNameInPool)},
3324 {CC "lookupNameAndTypeRefIndexInPool", CC "(" HS_CONSTANT_POOL2 "II)I", FN_PTR(lookupNameAndTypeRefIndexInPool)},
3325 {CC "lookupSignatureInPool", CC "(" HS_CONSTANT_POOL2 "II)" STRING, FN_PTR(lookupSignatureInPool)},
3326 {CC "lookupKlassRefIndexInPool", CC "(" HS_CONSTANT_POOL2 "II)I", FN_PTR(lookupKlassRefIndexInPool)},
3327 {CC "lookupKlassInPool", CC "(" HS_CONSTANT_POOL2 "I)Ljava/lang/Object;", FN_PTR(lookupKlassInPool)},
3328 {CC "lookupAppendixInPool", CC "(" HS_CONSTANT_POOL2 "II)" OBJECTCONSTANT, FN_PTR(lookupAppendixInPool)},
3329 {CC "lookupMethodInPool", CC "(" HS_CONSTANT_POOL2 "IB" HS_METHOD2 ")" HS_METHOD, FN_PTR(lookupMethodInPool)},
3330 {CC "lookupConstantInPool", CC "(" HS_CONSTANT_POOL2 "IZ)" JAVACONSTANT, FN_PTR(lookupConstantInPool)},
3331 {CC "getNumIndyEntries", CC "(" HS_CONSTANT_POOL2 ")I", FN_PTR(getNumIndyEntries)},
3332 {CC "resolveBootstrapMethod", CC "(" HS_CONSTANT_POOL2 "I)[" OBJECT, FN_PTR(resolveBootstrapMethod)},
3333 {CC "bootstrapArgumentIndexAt", CC "(" HS_CONSTANT_POOL2 "II)I", FN_PTR(bootstrapArgumentIndexAt)},
3334 {CC "getUncachedStringInPool", CC "(" HS_CONSTANT_POOL2 "I)" JAVACONSTANT, FN_PTR(getUncachedStringInPool)},
3335 {CC "resolveTypeInPool", CC "(" HS_CONSTANT_POOL2 "I)" HS_KLASS, FN_PTR(resolveTypeInPool)},
3336 {CC "resolveFieldInPool", CC "(" HS_CONSTANT_POOL2 "I" HS_METHOD2 "B[I)" HS_KLASS, FN_PTR(resolveFieldInPool)},
3337 {CC "decodeFieldIndexToCPIndex", CC "(" HS_CONSTANT_POOL2 "I)I", FN_PTR(decodeFieldIndexToCPIndex)},
3338 {CC "decodeMethodIndexToCPIndex", CC "(" HS_CONSTANT_POOL2 "I)I", FN_PTR(decodeMethodIndexToCPIndex)},
3339 {CC "decodeIndyIndexToCPIndex", CC "(" HS_CONSTANT_POOL2 "IZ)I", FN_PTR(decodeIndyIndexToCPIndex)},
3340 {CC "resolveInvokeHandleInPool", CC "(" HS_CONSTANT_POOL2 "I)V", FN_PTR(resolveInvokeHandleInPool)},
3341 {CC "isResolvedInvokeHandleInPool", CC "(" HS_CONSTANT_POOL2 "II)I", FN_PTR(isResolvedInvokeHandleInPool)},
3342 {CC "resolveMethod", CC "(" HS_KLASS2 HS_METHOD2 HS_KLASS2 ")" HS_METHOD, FN_PTR(resolveMethod)},
3343 {CC "getSignaturePolymorphicHolders", CC "()[" STRING, FN_PTR(getSignaturePolymorphicHolders)},
3344 {CC "getVtableIndexForInterfaceMethod", CC "(" HS_KLASS2 HS_METHOD2 ")I", FN_PTR(getVtableIndexForInterfaceMethod)},
3345 {CC "getClassInitializer", CC "(" HS_KLASS2 ")" HS_METHOD, FN_PTR(getClassInitializer)},
3346 {CC "hasFinalizableSubclass", CC "(" HS_KLASS2 ")Z", FN_PTR(hasFinalizableSubclass)},
3347 {CC "getMaxCallTargetOffset", CC "(J)J", FN_PTR(getMaxCallTargetOffset)},
3348 {CC "asResolvedJavaMethod", CC "(" EXECUTABLE ")" HS_METHOD, FN_PTR(asResolvedJavaMethod)},
3349 {CC "getResolvedJavaMethod", CC "(" OBJECTCONSTANT "J)" HS_METHOD, FN_PTR(getResolvedJavaMethod)},
3350 {CC "getConstantPool", CC "(" OBJECT "JZ)" HS_CONSTANT_POOL, FN_PTR(getConstantPool)},
3351 {CC "getResolvedJavaType0", CC "(Ljava/lang/Object;JZ)" HS_KLASS, FN_PTR(getResolvedJavaType0)},
3352 {CC "readConfiguration", CC "()[" OBJECT, FN_PTR(readConfiguration)},
3353 {CC "installCode0", CC "(JJZ" HS_COMPILED_CODE "[" OBJECT INSTALLED_CODE "J[B)I", FN_PTR(installCode0)},
3354 {CC "getInstallCodeFlags", CC "()I", FN_PTR(getInstallCodeFlags)},
3355 {CC "resetCompilationStatistics", CC "()V", FN_PTR(resetCompilationStatistics)},
3356 {CC "disassembleCodeBlob", CC "(" INSTALLED_CODE ")" STRING, FN_PTR(disassembleCodeBlob)},
3357 {CC "executeHotSpotNmethod", CC "([" OBJECT HS_NMETHOD ")" OBJECT, FN_PTR(executeHotSpotNmethod)},
3358 {CC "getLineNumberTable", CC "(" HS_METHOD2 ")[J", FN_PTR(getLineNumberTable)},
3359 {CC "getLocalVariableTableStart", CC "(" HS_METHOD2 ")J", FN_PTR(getLocalVariableTableStart)},
3360 {CC "getLocalVariableTableLength", CC "(" HS_METHOD2 ")I", FN_PTR(getLocalVariableTableLength)},
3361 {CC "reprofile", CC "(" HS_METHOD2 ")V", FN_PTR(reprofile)},
3362 {CC "invalidateHotSpotNmethod", CC "(" HS_NMETHOD "Z)V", FN_PTR(invalidateHotSpotNmethod)},
3363 {CC "collectCounters", CC "()[J", FN_PTR(collectCounters)},
3364 {CC "getCountersSize", CC "()I", FN_PTR(getCountersSize)},
3365 {CC "setCountersSize", CC "(I)Z", FN_PTR(setCountersSize)},
3366 {CC "allocateCompileId", CC "(" HS_METHOD2 "I)I", FN_PTR(allocateCompileId)},
3367 {CC "isMature", CC "(J)Z", FN_PTR(isMature)},
3368 {CC "hasCompiledCodeForOSR", CC "(" HS_METHOD2 "II)Z", FN_PTR(hasCompiledCodeForOSR)},
3369 {CC "getSymbol", CC "(J)" STRING, FN_PTR(getSymbol)},
3370 {CC "getSignatureName", CC "(J)" STRING, FN_PTR(getSignatureName)},
3371 {CC "iterateFrames", CC "([" RESOLVED_METHOD "[" RESOLVED_METHOD "I" INSPECTED_FRAME_VISITOR ")" OBJECT, FN_PTR(iterateFrames)},
3372 {CC "materializeVirtualObjects", CC "(" HS_STACK_FRAME_REF "Z)V", FN_PTR(materializeVirtualObjects)},
3373 {CC "shouldDebugNonSafepoints", CC "()Z", FN_PTR(shouldDebugNonSafepoints)},
3374 {CC "writeDebugOutput", CC "(JIZ)V", FN_PTR(writeDebugOutput)},
3375 {CC "flushDebugOutput", CC "()V", FN_PTR(flushDebugOutput)},
3376 {CC "methodDataProfileDataSize", CC "(JI)I", FN_PTR(methodDataProfileDataSize)},
3377 {CC "methodDataExceptionSeen", CC "(JI)I", FN_PTR(methodDataExceptionSeen)},
3378 {CC "interpreterFrameSize", CC "(" BYTECODE_FRAME ")I", FN_PTR(interpreterFrameSize)},
3379 {CC "compileToBytecode", CC "(" OBJECTCONSTANT ")V", FN_PTR(compileToBytecode)},
3380 {CC "getFlagValue", CC "(" STRING ")" OBJECT, FN_PTR(getFlagValue)},
3381 {CC "getInterfaces", CC "(" HS_KLASS2 ")[" HS_KLASS, FN_PTR(getInterfaces)},
3382 {CC "getComponentType", CC "(" HS_KLASS2 ")" HS_RESOLVED_TYPE, FN_PTR(getComponentType)},
3383 {CC "ensureInitialized", CC "(" HS_KLASS2 ")V", FN_PTR(ensureInitialized)},
3384 {CC "ensureLinked", CC "(" HS_KLASS2 ")V", FN_PTR(ensureLinked)},
3385 {CC "getIdentityHashCode", CC "(" OBJECTCONSTANT ")I", FN_PTR(getIdentityHashCode)},
3386 {CC "isInternedString", CC "(" OBJECTCONSTANT ")Z", FN_PTR(isInternedString)},
3387 {CC "unboxPrimitive", CC "(" OBJECTCONSTANT ")" OBJECT, FN_PTR(unboxPrimitive)},
3388 {CC "boxPrimitive", CC "(" OBJECT ")" OBJECTCONSTANT, FN_PTR(boxPrimitive)},
3389 {CC "getDeclaredConstructors", CC "(" HS_KLASS2 ")[" RESOLVED_METHOD, FN_PTR(getDeclaredConstructors)},
3390 {CC "getDeclaredMethods", CC "(" HS_KLASS2 ")[" RESOLVED_METHOD, FN_PTR(getDeclaredMethods)},
3391 {CC "getAllMethods", CC "(" HS_KLASS2 ")[" RESOLVED_METHOD, FN_PTR(getAllMethods)},
3392 {CC "getDeclaredFieldsInfo", CC "(" HS_KLASS2 ")[" FIELDINFO, FN_PTR(getDeclaredFieldsInfo)},
3393 {CC "readStaticFieldValue", CC "(" HS_KLASS2 "JC)" JAVACONSTANT, FN_PTR(readStaticFieldValue)},
3394 {CC "readFieldValue", CC "(" OBJECTCONSTANT HS_KLASS2 "JC)" JAVACONSTANT, FN_PTR(readFieldValue)},
3395 {CC "isInstance", CC "(" HS_KLASS2 OBJECTCONSTANT ")Z", FN_PTR(isInstance)},
3396 {CC "isAssignableFrom", CC "(" HS_KLASS2 HS_KLASS2 ")Z", FN_PTR(isAssignableFrom)},
3397 {CC "isTrustedForIntrinsics", CC "(" HS_KLASS2 ")Z", FN_PTR(isTrustedForIntrinsics)},
3398 {CC "asJavaType", CC "(" OBJECTCONSTANT ")" HS_RESOLVED_TYPE, FN_PTR(asJavaType)},
3399 {CC "asString", CC "(" OBJECTCONSTANT ")" STRING, FN_PTR(asString)},
3400 {CC "equals", CC "(" OBJECTCONSTANT "J" OBJECTCONSTANT "J)Z", FN_PTR(equals)},
3401 {CC "getJavaMirror", CC "(" HS_KLASS2 ")" OBJECTCONSTANT, FN_PTR(getJavaMirror)},
3402 {CC "getArrayLength", CC "(" OBJECTCONSTANT ")I", FN_PTR(getArrayLength)},
3403 {CC "readArrayElement", CC "(" OBJECTCONSTANT "I)Ljava/lang/Object;", FN_PTR(readArrayElement)},
3404 {CC "arrayBaseOffset", CC "(C)I", FN_PTR(arrayBaseOffset)},
3405 {CC "arrayIndexScale", CC "(C)I", FN_PTR(arrayIndexScale)},
3406 {CC "clearOopHandle", CC "(J)V", FN_PTR(clearOopHandle)},
3407 {CC "releaseClearedOopHandles", CC "()V", FN_PTR(releaseClearedOopHandles)},
3408 {CC "registerNativeMethods", CC "(" CLASS ")[J", FN_PTR(registerNativeMethods)},
3409 {CC "isCurrentThreadAttached", CC "()Z", FN_PTR(isCurrentThreadAttached)},
3410 {CC "getCurrentJavaThread", CC "()J", FN_PTR(getCurrentJavaThread)},
3411 {CC "attachCurrentThread", CC "([BZ[J)Z", FN_PTR(attachCurrentThread)},
3412 {CC "detachCurrentThread", CC "(Z)Z", FN_PTR(detachCurrentThread)},
3413 {CC "translate", CC "(" OBJECT "Z)J", FN_PTR(translate)},
3414 {CC "unhand", CC "(J)" OBJECT, FN_PTR(unhand)},
3415 {CC "updateHotSpotNmethod", CC "(" HS_NMETHOD ")V", FN_PTR(updateHotSpotNmethod)},
3416 {CC "getCode", CC "(" HS_INSTALLED_CODE ")[B", FN_PTR(getCode)},
3417 {CC "asReflectionExecutable", CC "(" HS_METHOD2 ")" REFLECTION_EXECUTABLE, FN_PTR(asReflectionExecutable)},
3418 {CC "asReflectionField", CC "(" HS_KLASS2 "I)" REFLECTION_FIELD, FN_PTR(asReflectionField)},
3419 {CC "getEncodedClassAnnotationData", CC "(" HS_KLASS2 OBJECT "IJ)[B", FN_PTR(getEncodedClassAnnotationData)},
3420 {CC "getEncodedExecutableAnnotationData", CC "(" HS_METHOD2 OBJECT "IJ)[B", FN_PTR(getEncodedExecutableAnnotationData)},
3421 {CC "getEncodedFieldAnnotationData", CC "(" HS_KLASS2 "I" OBJECT "IJ)[B", FN_PTR(getEncodedFieldAnnotationData)},
3422 {CC "getFailedSpeculations", CC "(J[[B)[[B", FN_PTR(getFailedSpeculations)},
3423 {CC "getFailedSpeculationsAddress", CC "(" HS_METHOD2 ")J", FN_PTR(getFailedSpeculationsAddress)},
3424 {CC "releaseFailedSpeculations", CC "(J)V", FN_PTR(releaseFailedSpeculations)},
3425 {CC "addFailedSpeculation", CC "(J[B)Z", FN_PTR(addFailedSpeculation)},
3426 {CC "callSystemExit", CC "(I)V", FN_PTR(callSystemExit)},
3427 {CC "ticksNow", CC "()J", FN_PTR(ticksNow)},
3428 {CC "getThreadLocalObject", CC "(I)" OBJECT, FN_PTR(getThreadLocalObject)},
3429 {CC "setThreadLocalObject", CC "(I" OBJECT ")V", FN_PTR(setThreadLocalObject)},
3430 {CC "getThreadLocalLong", CC "(I)J", FN_PTR(getThreadLocalLong)},
3431 {CC "setThreadLocalLong", CC "(IJ)V", FN_PTR(setThreadLocalLong)},
3432 {CC "registerCompilerPhase", CC "(" STRING ")I", FN_PTR(registerCompilerPhase)},
3433 {CC "notifyCompilerPhaseEvent", CC "(JIII)V", FN_PTR(notifyCompilerPhaseEvent)},
3434 {CC "notifyCompilerInliningEvent", CC "(I" HS_METHOD2 HS_METHOD2 "ZLjava/lang/String;I)V", FN_PTR(notifyCompilerInliningEvent)},
3435 {CC "getOopMapAt", CC "(" HS_METHOD2 "I[J)V", FN_PTR(getOopMapAt)},
3436 {CC "updateCompilerThreadCanCallJava", CC "(Z)Z", FN_PTR(updateCompilerThreadCanCallJava)},
3437 {CC "getCompilationActivityMode", CC "()I", FN_PTR(getCompilationActivityMode)},
3438 {CC "isCompilerThread", CC "()Z", FN_PTR(isCompilerThread)},
3439 };
3440
3441 int CompilerToVM::methods_count() {
3442 return sizeof(methods) / sizeof(JNINativeMethod);
3443 }