1 /*
2 * Copyright (c) 2011, 2026, 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/nmethod.hpp"
31 #include "code/scopeDesc.hpp"
32 #include "compiler/compileBroker.hpp"
33 #include "compiler/compilerEvent.hpp"
34 #include "compiler/compilerOracle.hpp"
35 #include "compiler/disassembler.hpp"
36 #include "compiler/oopMap.hpp"
37 #include "interpreter/bytecodeStream.hpp"
38 #include "interpreter/linkResolver.hpp"
39 #include "interpreter/oopMapCache.hpp"
40 #include "jfr/jfrEvents.hpp"
41 #include "jvmci/jvmciCodeInstaller.hpp"
42 #include "jvmci/jvmciCompilerToVM.hpp"
43 #include "jvmci/jvmciRuntime.hpp"
44 #include "logging/log.hpp"
45 #include "logging/logTag.hpp"
46 #include "memory/oopFactory.hpp"
47 #include "memory/universe.hpp"
48 #include "oops/constantPool.inline.hpp"
49 #include "oops/instanceKlass.inline.hpp"
50 #include "oops/instanceMirrorKlass.hpp"
51 #include "oops/method.inline.hpp"
52 #include "oops/objArrayKlass.inline.hpp"
53 #include "oops/trainingData.hpp"
54 #include "oops/typeArrayOop.inline.hpp"
55 #include "prims/jvmtiExport.hpp"
56 #include "prims/methodHandles.hpp"
57 #include "prims/nativeLookup.hpp"
58 #include "runtime/arguments.hpp"
59 #include "runtime/atomicAccess.hpp"
60 #include "runtime/deoptimization.hpp"
61 #include "runtime/fieldDescriptor.inline.hpp"
62 #include "runtime/frame.inline.hpp"
63 #include "runtime/globals_extension.hpp"
64 #include "runtime/interfaceSupport.inline.hpp"
65 #include "runtime/jniHandles.inline.hpp"
66 #include "runtime/keepStackGCProcessed.hpp"
67 #include "runtime/reflection.hpp"
68 #include "runtime/stackFrameStream.inline.hpp"
69 #include "runtime/timerTrace.hpp"
70 #include "runtime/vframe.inline.hpp"
71 #include "runtime/vframe_hp.hpp"
72 #if INCLUDE_JFR
73 #include "jfr/jfr.hpp"
74 #endif
75
76 JVMCIKlassHandle::JVMCIKlassHandle(Thread* thread, Klass* klass) {
77 _thread = thread;
78 _klass = klass;
79 if (klass != nullptr) {
80 _holder = Handle(_thread, klass->klass_holder());
81 }
82 }
83
84 JVMCIKlassHandle& JVMCIKlassHandle::operator=(Klass* klass) {
85 _klass = klass;
86 if (klass != nullptr) {
87 _holder = Handle(_thread, klass->klass_holder());
88 }
89 return *this;
90 }
91
92 static void requireInHotSpot(const char* caller, JVMCI_TRAPS) {
93 if (!JVMCIENV->is_hotspot()) {
94 JVMCI_THROW_MSG(IllegalStateException, err_msg("Cannot call %s from JVMCI shared library", caller));
95 }
96 }
97
98 static void requireNotInHotSpot(const char* caller, JVMCI_TRAPS) {
99 if (JVMCIENV->is_hotspot()) {
100 JVMCI_THROW_MSG(IllegalStateException, err_msg("Cannot call %s from HotSpot", caller));
101 }
102 }
103
104 class JVMCITraceMark : public StackObj {
105 const char* _msg;
106 public:
107 JVMCITraceMark(const char* msg) {
108 _msg = msg;
109 JVMCI_event_2("Enter %s", _msg);
110 }
111 ~JVMCITraceMark() {
112 JVMCI_event_2(" Exit %s", _msg);
113 }
114 };
115
116 class JavaArgumentUnboxer : public SignatureIterator {
117 protected:
118 JavaCallArguments* _jca;
119 arrayOop _args;
120 int _index;
121
122 Handle next_arg(BasicType expectedType);
123
124 public:
125 JavaArgumentUnboxer(Symbol* signature,
126 JavaCallArguments* jca,
127 arrayOop args,
128 bool is_static)
129 : SignatureIterator(signature)
130 {
131 this->_return_type = T_ILLEGAL;
132 _jca = jca;
133 _index = 0;
134 _args = args;
135 if (!is_static) {
136 _jca->push_oop(next_arg(T_OBJECT));
137 }
138 do_parameters_on(this);
139 assert(_index == args->length(), "arg count mismatch with signature");
140 }
141
142 private:
143 friend class SignatureIterator; // so do_parameters_on can call do_type
144 void do_type(BasicType type) {
145 if (is_reference_type(type)) {
146 _jca->push_oop(next_arg(T_OBJECT));
147 return;
148 }
149 Handle arg = next_arg(type);
150 int box_offset = java_lang_boxing_object::value_offset(type);
151 switch (type) {
152 case T_BOOLEAN: _jca->push_int(arg->bool_field(box_offset)); break;
153 case T_CHAR: _jca->push_int(arg->char_field(box_offset)); break;
154 case T_SHORT: _jca->push_int(arg->short_field(box_offset)); break;
155 case T_BYTE: _jca->push_int(arg->byte_field(box_offset)); break;
156 case T_INT: _jca->push_int(arg->int_field(box_offset)); break;
157 case T_LONG: _jca->push_long(arg->long_field(box_offset)); break;
158 case T_FLOAT: _jca->push_float(arg->float_field(box_offset)); break;
159 case T_DOUBLE: _jca->push_double(arg->double_field(box_offset)); break;
160 default: ShouldNotReachHere();
161 }
162 }
163 };
164
165 Handle JavaArgumentUnboxer::next_arg(BasicType expectedType) {
166 assert(_index < _args->length(), "out of bounds");
167 oop arg = refArrayOop(_args)->obj_at(_index++);
168 assert(expectedType == T_OBJECT || java_lang_boxing_object::is_instance(arg, expectedType), "arg type mismatch");
169 return Handle(Thread::current(), arg);
170 }
171
172 // Bring the JVMCI compiler thread into the VM state.
173 #define JVMCI_VM_ENTRY_MARK \
174 MACOS_AARCH64_ONLY(ThreadWXEnable __wx(WXWrite, thread)); \
175 ThreadInVMfromNative __tiv(thread); \
176 HandleMarkCleaner __hm(thread); \
177 JavaThread* THREAD = thread; \
178 DEBUG_ONLY(VMNativeEntryWrapper __vew;)
179
180 // Native method block that transitions current thread to '_thread_in_vm'.
181 // Note: CompilerThreadCanCallJava must precede JVMCIENV_FROM_JNI so that
182 // the translation of an uncaught exception in the JVMCIEnv does not make
183 // a Java call when __is_hotspot == false.
184 #define C2V_BLOCK(result_type, name, signature) \
185 JVMCI_VM_ENTRY_MARK; \
186 ResourceMark rm; \
187 bool __is_hotspot = env == thread->jni_environment(); \
188 bool __block_can_call_java = __is_hotspot || !thread->is_Compiler_thread() || CompilerThread::cast(thread)->can_call_java(); \
189 CompilerThreadCanCallJava ccj(thread, __block_can_call_java); \
190 JVMCIENV_FROM_JNI(JVMCI::compilation_tick(thread), env); \
191
192 // Entry to native method implementation that transitions
193 // current thread to '_thread_in_vm'.
194 #define C2V_VMENTRY(result_type, name, signature) \
195 result_type JNICALL c2v_ ## name signature { \
196 JavaThread* thread = JavaThread::current_or_null(); \
197 if (thread == nullptr) { \
198 env->ThrowNew(JNIJVMCI::InternalError::clazz(), \
199 err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
200 return; \
201 } \
202 C2V_BLOCK(result_type, name, signature) \
203 JVMCITraceMark jtm("CompilerToVM::" #name);
204
205 #define C2V_VMENTRY_(result_type, name, signature, result) \
206 result_type JNICALL c2v_ ## name signature { \
207 JavaThread* thread = JavaThread::current_or_null(); \
208 if (thread == nullptr) { \
209 env->ThrowNew(JNIJVMCI::InternalError::clazz(), \
210 err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
211 return result; \
212 } \
213 C2V_BLOCK(result_type, name, signature) \
214 JVMCITraceMark jtm("CompilerToVM::" #name);
215
216 #define C2V_VMENTRY_NULL(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, nullptr)
217 #define C2V_VMENTRY_0(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, 0)
218
219 // Entry to native method implementation that does not transition
220 // current thread to '_thread_in_vm'.
221 #define C2V_VMENTRY_PREFIX(result_type, name, signature) \
222 result_type JNICALL c2v_ ## name signature { \
223 JavaThread* thread = JavaThread::current_or_null();
224
225 #define C2V_END }
226
227 #define JNI_THROW(caller, name, msg) do { \
228 jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg); \
229 if (__throw_res != JNI_OK) { \
230 JVMCI_event_1("Throwing " #name " in " caller " returned %d", __throw_res); \
231 } \
232 return; \
233 } while (0);
234
235 #define JNI_THROW_(caller, name, msg, result) do { \
236 jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg); \
237 if (__throw_res != JNI_OK) { \
238 JVMCI_event_1("Throwing " #name " in " caller " returned %d", __throw_res); \
239 } \
240 return result; \
241 } while (0)
242
243 jobjectArray readConfiguration0(JNIEnv *env, JVMCI_TRAPS);
244
245 C2V_VMENTRY_NULL(jobjectArray, readConfiguration, (JNIEnv* env))
246 jobjectArray config = readConfiguration0(env, JVMCI_CHECK_NULL);
247 return config;
248 }
249
250 C2V_VMENTRY_NULL(jobject, getFlagValue, (JNIEnv* env, jobject c2vm, jobject name_handle))
251 #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();
252 #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();
253 JVMCIObject name = JVMCIENV->wrap(name_handle);
254 if (name.is_null()) {
255 JVMCI_THROW_NULL(NullPointerException);
256 }
257 const char* cstring = JVMCIENV->as_utf8_string(name);
258 const JVMFlag* flag = JVMFlag::find_declared_flag(cstring);
259 if (flag == nullptr) {
260 return c2vm;
261 }
262 if (flag->is_bool()) {
263 jvalue prim;
264 prim.z = flag->get_bool();
265 JVMCIObject box = JVMCIENV->create_box(T_BOOLEAN, &prim, JVMCI_CHECK_NULL);
266 return JVMCIENV->get_jobject(box);
267 } else if (flag->is_ccstr()) {
268 JVMCIObject value = JVMCIENV->create_string(flag->get_ccstr(), JVMCI_CHECK_NULL);
269 return JVMCIENV->get_jobject(value);
270 } else if (flag->is_intx()) {
271 RETURN_BOXED_LONG(flag->get_intx());
272 } else if (flag->is_int()) {
273 RETURN_BOXED_LONG(flag->get_int());
274 } else if (flag->is_uint()) {
275 RETURN_BOXED_LONG(flag->get_uint());
276 } else if (flag->is_uint64_t()) {
277 RETURN_BOXED_LONG(flag->get_uint64_t());
278 } else if (flag->is_size_t()) {
279 RETURN_BOXED_LONG(flag->get_size_t());
280 } else if (flag->is_uintx()) {
281 RETURN_BOXED_LONG(flag->get_uintx());
282 } else if (flag->is_double()) {
283 RETURN_BOXED_DOUBLE(flag->get_double());
284 } else {
285 JVMCI_ERROR_NULL("VM flag %s has unsupported type %s", flag->name(), flag->type_string());
286 }
287 #undef RETURN_BOXED_LONG
288 #undef RETURN_BOXED_DOUBLE
289 C2V_END
290
291 // Macros for argument pairs representing a wrapper object and its wrapped VM pointer
292 #define ARGUMENT_PAIR(name) jobject name ## _obj, jlong name ## _pointer
293 #define UNPACK_PAIR(type, name) ((type*) name ## _pointer)
294
295 C2V_VMENTRY_NULL(jbyteArray, getBytecode, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
296 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
297
298 int code_size = method->code_size();
299 jbyte* reconstituted_code = NEW_RESOURCE_ARRAY(jbyte, code_size);
300
301 guarantee(method->method_holder()->is_rewritten(), "Method's holder should be rewritten");
302 // iterate over all bytecodes and replace non-Java bytecodes
303
304 for (BytecodeStream s(method); s.next() != Bytecodes::_illegal; ) {
305 Bytecodes::Code code = s.code();
306 Bytecodes::Code raw_code = s.raw_code();
307 int bci = s.bci();
308 int len = s.instruction_size();
309
310 // Restore original byte code.
311 reconstituted_code[bci] = (jbyte) (s.is_wide()? Bytecodes::_wide : code);
312 if (len > 1) {
313 memcpy(reconstituted_code + (bci + 1), s.bcp()+1, len-1);
314 }
315
316 if (len > 1) {
317 // Restore the big-endian constant pool indexes.
318 // Cf. Rewriter::scan_method
319 switch (code) {
320 case Bytecodes::_getstatic:
321 case Bytecodes::_putstatic:
322 case Bytecodes::_getfield:
323 case Bytecodes::_putfield:
324 case Bytecodes::_invokevirtual:
325 case Bytecodes::_invokespecial:
326 case Bytecodes::_invokestatic:
327 case Bytecodes::_invokeinterface:
328 case Bytecodes::_invokehandle: {
329 int cp_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
330 Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
331 break;
332 }
333
334 case Bytecodes::_invokedynamic: {
335 int cp_index = Bytes::get_native_u4((address) reconstituted_code + (bci + 1));
336 Bytes::put_Java_u4((address) reconstituted_code + (bci + 1), (u4) cp_index);
337 break;
338 }
339
340 default:
341 break;
342 }
343
344 // Not all ldc byte code are rewritten.
345 switch (raw_code) {
346 case Bytecodes::_fast_aldc: {
347 int cpc_index = reconstituted_code[bci + 1] & 0xff;
348 int cp_index = method->constants()->object_to_cp_index(cpc_index);
349 assert(cp_index < method->constants()->length(), "sanity check");
350 reconstituted_code[bci + 1] = (jbyte) cp_index;
351 break;
352 }
353
354 case Bytecodes::_fast_aldc_w: {
355 int cpc_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
356 int cp_index = method->constants()->object_to_cp_index(cpc_index);
357 assert(cp_index < method->constants()->length(), "sanity check");
358 Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
359 break;
360 }
361
362 default:
363 break;
364 }
365 }
366 }
367
368 JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL);
369 JVMCIENV->copy_bytes_from(reconstituted_code, result, 0, code_size);
370 return JVMCIENV->get_jbyteArray(result);
371 C2V_END
372
373 C2V_VMENTRY_0(jint, getExceptionTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
374 Method* method = UNPACK_PAIR(Method, method);
375 return method->exception_table_length();
376 C2V_END
377
378 C2V_VMENTRY_0(jlong, getExceptionTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
379 Method* method = UNPACK_PAIR(Method, method);
380 if (method->exception_table_length() == 0) {
381 return 0L;
382 }
383 return (jlong) (address) method->exception_table_start();
384 C2V_END
385
386 C2V_VMENTRY_NULL(jobject, asResolvedJavaMethod, (JNIEnv* env, jobject, jobject executable_handle))
387 requireInHotSpot("asResolvedJavaMethod", JVMCI_CHECK_NULL);
388 oop executable = JNIHandles::resolve(executable_handle);
389 oop mirror = nullptr;
390 int slot = 0;
391
392 if (executable->klass() == vmClasses::reflect_Constructor_klass()) {
393 mirror = java_lang_reflect_Constructor::clazz(executable);
394 slot = java_lang_reflect_Constructor::slot(executable);
395 } else {
396 assert(executable->klass() == vmClasses::reflect_Method_klass(), "wrong type");
397 mirror = java_lang_reflect_Method::clazz(executable);
398 slot = java_lang_reflect_Method::slot(executable);
399 }
400 Klass* holder = java_lang_Class::as_Klass(mirror);
401 methodHandle method (THREAD, InstanceKlass::cast(holder)->method_with_idnum(slot));
402 JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
403 return JVMCIENV->get_jobject(result);
404 }
405
406 C2V_VMENTRY_PREFIX(jboolean, updateCompilerThreadCanCallJava, (JNIEnv* env, jobject, jboolean newState))
407 return CompilerThreadCanCallJava::update(thread, newState) != nullptr;
408 C2V_END
409
410
411 C2V_VMENTRY_NULL(jobject, getResolvedJavaMethod, (JNIEnv* env, jobject, jobject base, jlong offset))
412 Method* method = nullptr;
413 JVMCIObject base_object = JVMCIENV->wrap(base);
414 if (base_object.is_null()) {
415 method = *((Method**)(offset));
416 } else {
417 Handle obj = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
418 if (obj->is_a(vmClasses::ResolvedMethodName_klass())) {
419 method = (Method*) (intptr_t) obj->long_field(offset);
420 } else {
421 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", obj->klass()->external_name()));
422 }
423 }
424 if (method == nullptr) {
425 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", JVMCIENV->klass_name(base_object)));
426 }
427 assert (method->is_method(), "invalid read");
428 JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, method), JVMCI_CHECK_NULL);
429 return JVMCIENV->get_jobject(result);
430 }
431
432 C2V_VMENTRY_NULL(jobject, getConstantPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass_or_method), jboolean is_klass))
433 ConstantPool* cp = nullptr;
434 if (UNPACK_PAIR(address, klass_or_method) == nullptr) {
435 JVMCI_THROW_NULL(NullPointerException);
436 }
437 if (!is_klass) {
438 cp = (UNPACK_PAIR(Method, klass_or_method))->constMethod()->constants();
439 } else {
440 cp = InstanceKlass::cast(UNPACK_PAIR(Klass, klass_or_method))->constants();
441 }
442
443 JVMCIObject result = JVMCIENV->get_jvmci_constant_pool(constantPoolHandle(THREAD, cp), JVMCI_CHECK_NULL);
444 return JVMCIENV->get_jobject(result);
445 }
446
447 C2V_VMENTRY_NULL(jobject, getResolvedJavaType0, (JNIEnv* env, jobject, jobject base, jlong offset, jboolean compressed))
448 JVMCIObject base_object = JVMCIENV->wrap(base);
449 if (base_object.is_null()) {
450 JVMCI_THROW_MSG_NULL(NullPointerException, "base object is null");
451 }
452
453 const char* base_desc = nullptr;
454 JVMCIKlassHandle klass(THREAD);
455 if (offset == oopDesc::klass_offset_in_bytes()) {
456 if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
457 Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
458 klass = base_oop->klass();
459 } else {
460 goto unexpected;
461 }
462 } else if (!compressed) {
463 if (JVMCIENV->isa_HotSpotConstantPool(base_object)) {
464 ConstantPool* cp = JVMCIENV->asConstantPool(base_object);
465 if (offset == in_bytes(ConstantPool::pool_holder_offset())) {
466 klass = cp->pool_holder();
467 } else {
468 base_desc = FormatBufferResource("[constant pool for %s]", cp->pool_holder()->signature_name());
469 goto unexpected;
470 }
471 } else if (JVMCIENV->isa_HotSpotResolvedObjectTypeImpl(base_object)) {
472 Klass* base_klass = JVMCIENV->asKlass(base_object);
473 if (offset == in_bytes(Klass::subklass_offset())) {
474 klass = base_klass->subklass();
475 } else if (offset == in_bytes(Klass::super_offset())) {
476 klass = base_klass->super();
477 } else if (offset == in_bytes(Klass::next_sibling_offset())) {
478 klass = base_klass->next_sibling();
479 } else if (offset == in_bytes(ObjArrayKlass::element_klass_offset()) && base_klass->is_objArray_klass()) {
480 klass = ObjArrayKlass::cast(base_klass)->element_klass();
481 } else if (offset >= in_bytes(Klass::primary_supers_offset()) &&
482 offset < in_bytes(Klass::primary_supers_offset()) + (int) (sizeof(Klass*) * Klass::primary_super_limit()) &&
483 offset % sizeof(Klass*) == 0) {
484 // Offset is within the primary supers array
485 int index = (int) ((offset - in_bytes(Klass::primary_supers_offset())) / sizeof(Klass*));
486 klass = base_klass->primary_super_of_depth(index);
487 } else {
488 base_desc = FormatBufferResource("[%s]", base_klass->signature_name());
489 goto unexpected;
490 }
491 } else if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
492 Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
493 if (base_oop->is_a(vmClasses::Class_klass())) {
494 if (offset == java_lang_Class::klass_offset()) {
495 klass = java_lang_Class::as_Klass(base_oop());
496 } else if (offset == java_lang_Class::array_klass_offset()) {
497 klass = java_lang_Class::array_klass_acquire(base_oop());
498 } else {
499 base_desc = FormatBufferResource("[Class=%s]", java_lang_Class::as_Klass(base_oop())->signature_name());
500 goto unexpected;
501 }
502 } else {
503 if (!base_oop.is_null()) {
504 base_desc = FormatBufferResource("[%s]", base_oop()->klass()->signature_name());
505 }
506 goto unexpected;
507 }
508 } else if (JVMCIENV->isa_HotSpotMethodData(base_object)) {
509 jlong base_address = (intptr_t) JVMCIENV->asMethodData(base_object);
510 Klass* k = *((Klass**) (intptr_t) (base_address + offset));
511 if (k == nullptr || k->class_loader_data() == nullptr || !TrainingData::is_klass_loaded(k)) {
512 return nullptr;
513 }
514 if (!k->is_loader_alive()) {
515 // Klasses in methodData might be concurrently unloading so return null in that case.
516 return nullptr;
517 }
518 klass = k;
519 } else {
520 goto unexpected;
521 }
522 } else {
523 goto unexpected;
524 }
525
526 {
527 if (klass == nullptr) {
528 return nullptr;
529 }
530 JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
531 return JVMCIENV->get_jobject(result);
532 }
533
534 unexpected:
535 JVMCI_THROW_MSG_NULL(IllegalArgumentException,
536 err_msg("Unexpected arguments: %s%s " JLONG_FORMAT " %s",
537 JVMCIENV->klass_name(base_object), base_desc == nullptr ? "" : base_desc,
538 offset, compressed ? "true" : "false"));
539 }
540
541 C2V_VMENTRY_NULL(jobject, findUniqueConcreteMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
542 methodHandle method (THREAD, UNPACK_PAIR(Method, method));
543 InstanceKlass* holder = InstanceKlass::cast(UNPACK_PAIR(Klass, klass));
544 if (holder->is_interface()) {
545 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Interface %s should be handled in Java code", holder->external_name()));
546 }
547 if (method->can_be_statically_bound()) {
548 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()));
549 }
550
551 methodHandle ucm;
552 {
553 MutexLocker locker(Compile_lock);
554 ucm = methodHandle(THREAD, Dependencies::find_unique_concrete_method(holder, method()));
555 }
556 JVMCIObject result = JVMCIENV->get_jvmci_method(ucm, JVMCI_CHECK_NULL);
557 return JVMCIENV->get_jobject(result);
558 C2V_END
559
560 C2V_VMENTRY_NULL(jobject, getImplementor, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
561 Klass* klass = UNPACK_PAIR(Klass, klass);
562 if (!klass->is_interface()) {
563 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(),
564 err_msg("Expected interface type, got %s", klass->external_name()));
565 }
566 InstanceKlass* iklass = InstanceKlass::cast(klass);
567 JVMCIKlassHandle handle(THREAD, iklass->implementor());
568 JVMCIObject implementor = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
569 return JVMCIENV->get_jobject(implementor);
570 C2V_END
571
572 C2V_VMENTRY_0(jboolean, methodIsIgnoredBySecurityStackWalk,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
573 Method* method = UNPACK_PAIR(Method, method);
574 return method->is_ignored_by_security_stack_walk();
575 C2V_END
576
577 C2V_VMENTRY_0(jboolean, isCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
578 Method* method = UNPACK_PAIR(Method, method);
579 // Skip redefined methods
580 if (method->is_old()) {
581 return false;
582 }
583 return !method->is_not_compilable(CompLevel_full_optimization);
584 C2V_END
585
586 C2V_VMENTRY_0(jboolean, hasNeverInlineDirective,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
587 methodHandle method (THREAD, UNPACK_PAIR(Method, method));
588 return !Inline || CompilerOracle::should_not_inline(method) || method->dont_inline();
589 C2V_END
590
591 C2V_VMENTRY_0(jboolean, shouldInlineMethod,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
592 methodHandle method (THREAD, UNPACK_PAIR(Method, method));
593 return CompilerOracle::should_inline(method) || method->force_inline();
594 C2V_END
595
596 C2V_VMENTRY_NULL(jobject, lookupType, (JNIEnv* env, jobject, jstring jname, ARGUMENT_PAIR(accessing_klass), jint accessing_klass_loader, jboolean resolve))
597 CompilerThreadCanCallJava canCallJava(thread, resolve); // Resolution requires Java calls
598 JVMCIObject name = JVMCIENV->wrap(jname);
599 const char* str = JVMCIENV->as_utf8_string(name);
600 TempNewSymbol class_name = SymbolTable::new_symbol(str);
601
602 if (class_name->utf8_length() <= 1) {
603 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Primitive type %s should be handled in Java code", str));
604 }
605
606 #ifdef ASSERT
607 const char* val = Arguments::PropertyList_get_value(Arguments::system_properties(), "test.jvmci.lookupTypeException");
608 if (val != nullptr) {
609 if (strstr(val, "<trace>") != nullptr) {
610 tty->print_cr("CompilerToVM.lookupType: %s", str);
611 } else if (strstr(str, val) != nullptr) {
612 THROW_MSG_NULL(vmSymbols::java_lang_Exception(),
613 err_msg("lookupTypeException: %s", str));
614 }
615 }
616 #endif
617
618 JVMCIKlassHandle resolved_klass(THREAD);
619 Klass* accessing_klass = UNPACK_PAIR(Klass, accessing_klass);
620 Handle class_loader;
621 if (accessing_klass != nullptr) {
622 class_loader = Handle(THREAD, accessing_klass->class_loader());
623 } else {
624 switch (accessing_klass_loader) {
625 case 0: break; // class_loader is already null, the boot loader
626 case 1: class_loader = Handle(THREAD, SystemDictionary::java_platform_loader()); break;
627 case 2: class_loader = Handle(THREAD, SystemDictionary::java_system_loader()); break;
628 default:
629 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Illegal class loader value: %d", accessing_klass_loader));
630 }
631 JVMCIENV->runtime()->initialize(JVMCI_CHECK_NULL);
632 }
633
634 if (resolve) {
635 resolved_klass = SystemDictionary::resolve_or_fail(class_name, class_loader, true, CHECK_NULL);
636 } else {
637 if (Signature::has_envelope(class_name)) {
638 // This is a name from a signature. Strip off the trimmings.
639 // Call recursive to keep scope of strippedsym.
640 TempNewSymbol strippedsym = Signature::strip_envelope(class_name);
641 resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
642 class_loader);
643 } else if (Signature::is_array(class_name)) {
644 SignatureStream ss(class_name, false);
645 int ndim = ss.skip_array_prefix();
646 if (ss.type() == T_OBJECT) {
647 Symbol* strippedsym = ss.as_symbol();
648 resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
649 class_loader);
650 if (!resolved_klass.is_null()) {
651 resolved_klass = resolved_klass->array_klass(ndim, CHECK_NULL);
652 }
653 } else {
654 resolved_klass = Universe::typeArrayKlass(ss.type())->array_klass(ndim, CHECK_NULL);
655 }
656 } else {
657 resolved_klass = SystemDictionary::find_instance_klass(THREAD, class_name,
658 class_loader);
659 }
660 }
661 JVMCIObject result = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
662 return JVMCIENV->get_jobject(result);
663 C2V_END
664
665 C2V_VMENTRY_NULL(jobject, getArrayType, (JNIEnv* env, jobject, jchar type_char, ARGUMENT_PAIR(klass)))
666 JVMCIKlassHandle array_klass(THREAD);
667 Klass* klass = UNPACK_PAIR(Klass, klass);
668 if (klass == nullptr) {
669 BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_NULL);
670 if (type == T_VOID) {
671 return nullptr;
672 }
673 array_klass = Universe::typeArrayKlass(type);
674 if (array_klass == nullptr) {
675 JVMCI_THROW_MSG_NULL(InternalError, err_msg("No array klass for primitive type %s", type2name(type)));
676 }
677 } else {
678 array_klass = klass->array_klass(CHECK_NULL);
679 }
680 JVMCIObject result = JVMCIENV->get_jvmci_type(array_klass, JVMCI_CHECK_NULL);
681 return JVMCIENV->get_jobject(result);
682 C2V_END
683
684 C2V_VMENTRY_NULL(jobject, lookupClass, (JNIEnv* env, jobject, jclass mirror))
685 requireInHotSpot("lookupClass", JVMCI_CHECK_NULL);
686 if (mirror == nullptr) {
687 return nullptr;
688 }
689 JVMCIKlassHandle klass(THREAD);
690 klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
691 if (klass == nullptr) {
692 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Primitive classes are unsupported");
693 }
694 JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
695 return JVMCIENV->get_jobject(result);
696 C2V_END
697
698 C2V_VMENTRY_NULL(jobject, lookupJClass, (JNIEnv* env, jobject, jlong jclass_value))
699 if (jclass_value == 0L) {
700 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass must not be zero");
701 }
702 jclass mirror = reinterpret_cast<jclass>(jclass_value);
703 // Since the jclass_value is passed as a jlong, we perform additional checks to prevent the caller from accidentally
704 // sending a value that is not a JNI handle.
705 if (JNIHandles::handle_type(thread, mirror) == JNIInvalidRefType) {
706 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass is not a valid JNI reference");
707 }
708 oop obj = JNIHandles::resolve(mirror);
709 if (!java_lang_Class::is_instance(obj)) {
710 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass must be a reference to the Class object");
711 }
712 JVMCIKlassHandle klass(THREAD, java_lang_Class::as_Klass(obj));
713 JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
714 return JVMCIENV->get_jobject(result);
715 C2V_END
716
717 C2V_VMENTRY_0(jlong, getJObjectValue, (JNIEnv* env, jobject, jobject constant_jobject))
718 requireNotInHotSpot("getJObjectValue", JVMCI_CHECK_0);
719 // Ensure that current JNI handle scope is not the top-most JNIHandleBlock as handles
720 // in that scope are only released when the thread exits.
721 if (!THREAD->has_last_Java_frame() && THREAD->active_handles()->pop_frame_link() == nullptr) {
722 JVMCI_THROW_MSG_0(IllegalStateException, err_msg("Cannot call getJObjectValue without Java frame anchor or a pushed JNI handle block"));
723 }
724 JVMCIObject constant = JVMCIENV->wrap(constant_jobject);
725 Handle constant_value = JVMCIENV->asConstant(constant, JVMCI_CHECK_0);
726 jobject jni_handle = JNIHandles::make_local(THREAD, constant_value());
727 return reinterpret_cast<jlong>(jni_handle);
728 C2V_END
729
730 C2V_VMENTRY_NULL(jobject, getUncachedStringInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
731 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
732 constantTag tag = cp->tag_at(index);
733 if (!tag.is_string()) {
734 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
735 }
736 oop obj = cp->uncached_string_at(index, CHECK_NULL);
737 return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
738 C2V_END
739
740 C2V_VMENTRY_NULL(jobject, lookupConstantInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint cp_index, bool resolve))
741 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
742 oop obj;
743 if (!resolve) {
744 bool found_it;
745 obj = cp->find_cached_constant_at(cp_index, found_it, CHECK_NULL);
746 if (!found_it) {
747 return nullptr;
748 }
749 } else {
750 obj = cp->resolve_possibly_cached_constant_at(cp_index, CHECK_NULL);
751 }
752 constantTag tag = cp->tag_at(cp_index);
753 if (tag.is_dynamic_constant()) {
754 if (obj == nullptr) {
755 return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
756 }
757 BasicType bt = Signature::basic_type(cp->uncached_signature_ref_at(cp_index));
758 if (!is_reference_type(bt)) {
759 if (!is_java_primitive(bt)) {
760 return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
761 }
762
763 // Convert standard box (e.g. java.lang.Integer) to JVMCI box (e.g. jdk.vm.ci.meta.PrimitiveConstant)
764 jvalue value;
765 jlong raw_value;
766 jchar type_char;
767 BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
768 assert(bt2 == bt, "");
769 switch (bt2) {
770 case T_LONG: type_char = 'J'; raw_value = value.j; break;
771 case T_DOUBLE: type_char = 'D'; raw_value = value.j; break;
772 case T_FLOAT: type_char = 'F'; raw_value = value.i; break;
773 case T_INT: type_char = 'I'; raw_value = value.i; break;
774 case T_SHORT: type_char = 'S'; raw_value = value.s; break;
775 case T_BYTE: type_char = 'B'; raw_value = value.b; break;
776 case T_CHAR: type_char = 'C'; raw_value = value.c; break;
777 case T_BOOLEAN: type_char = 'Z'; raw_value = value.z; break;
778 default: return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
779 }
780
781 JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, raw_value, JVMCI_CHECK_NULL);
782 return JVMCIENV->get_jobject(result);
783 }
784 }
785 #ifdef ASSERT
786 // Support for testing an OOME raised in a context where the current thread cannot call Java
787 // 1. Put -Dtest.jvmci.oome_in_lookupConstantInPool=<trace> on the command line to
788 // discover possible values for step 2.
789 // Example output:
790 //
791 // CompilerToVM.lookupConstantInPool: "Overflow: String length out of range"{0x00000007ffeb2960}
792 // CompilerToVM.lookupConstantInPool: "null"{0x00000007ffebdfe8}
793 // CompilerToVM.lookupConstantInPool: "Maximum lock count exceeded"{0x00000007ffec4f90}
794 // CompilerToVM.lookupConstantInPool: "Negative length"{0x00000007ffec4468}
795 //
796 // 2. Choose a value shown in step 1.
797 // Example: -Dtest.jvmci.oome_in_lookupConstantInPool=Negative
798 const char* val = Arguments::PropertyList_get_value(Arguments::system_properties(), "test.jvmci.oome_in_lookupConstantInPool");
799 if (val != nullptr) {
800 const char* str = obj->print_value_string();
801 if (strstr(val, "<trace>") != nullptr) {
802 tty->print_cr("CompilerToVM.lookupConstantInPool: %s", str);
803 } else if (strstr(str, val) != nullptr) {
804 Handle garbage;
805 while (true) {
806 // Trigger an OutOfMemoryError
807 refArrayOop next = oopFactory::new_objectArray(0x7FFFFFFF, CHECK_NULL);
808 next->obj_at_put(0, garbage());
809 garbage = Handle(THREAD, next);
810 }
811 }
812 }
813 #endif
814 return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
815 C2V_END
816
817 C2V_VMENTRY_0(jint, getNumIndyEntries, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp)))
818 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
819 if (cp->cache()->resolved_indy_entries() == nullptr) {
820 return 0;
821 }
822 return cp->resolved_indy_entries_length();
823 C2V_END
824
825 C2V_VMENTRY_NULL(jobjectArray, resolveBootstrapMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
826 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
827 constantTag tag = cp->tag_at(index);
828 bool is_indy = tag.is_invoke_dynamic();
829 bool is_condy = tag.is_dynamic_constant();
830 if (!(is_condy || is_indy)) {
831 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
832 }
833 // Get the indy entry based on CP index
834 int indy_index = -1;
835 if (is_indy) {
836 for (int i = 0; i < cp->resolved_indy_entries_length(); i++) {
837 if (cp->resolved_indy_entry_at(i)->constant_pool_index() == index) {
838 indy_index = i;
839 }
840 }
841 }
842 // Resolve the bootstrap specifier, its name, type, and static arguments
843 BootstrapInfo bootstrap_specifier(cp, index, indy_index);
844 Handle bsm = bootstrap_specifier.resolve_bsm(CHECK_NULL);
845
846 // call java.lang.invoke.MethodHandle::asFixedArity() -> MethodHandle
847 // to get a DirectMethodHandle from which we can then extract a Method*
848 JavaValue result(T_OBJECT);
849 JavaCalls::call_virtual(&result,
850 bsm,
851 vmClasses::MethodHandle_klass(),
852 vmSymbols::asFixedArity_name(),
853 vmSymbols::asFixedArity_signature(),
854 CHECK_NULL);
855 bsm = Handle(THREAD, result.get_oop());
856
857 // Check assumption about getting a DirectMethodHandle
858 if (!java_lang_invoke_DirectMethodHandle::is_instance(bsm())) {
859 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Unexpected MethodHandle subclass: %s", bsm->klass()->external_name()));
860 }
861 // Create return array describing the bootstrap method invocation (BSMI)
862 JVMCIObjectArray bsmi = JVMCIENV->new_Object_array(4, JVMCI_CHECK_NULL);
863
864 // Extract Method* and wrap it in a ResolvedJavaMethod
865 Handle member = Handle(THREAD, java_lang_invoke_DirectMethodHandle::member(bsm()));
866 JVMCIObject bsmi_method = JVMCIENV->get_jvmci_method(methodHandle(THREAD, java_lang_invoke_MemberName::vmtarget(member())), JVMCI_CHECK_NULL);
867 JVMCIENV->put_object_at(bsmi, 0, bsmi_method);
868
869 JVMCIObject bsmi_name = JVMCIENV->create_string(bootstrap_specifier.name(), JVMCI_CHECK_NULL);
870 JVMCIENV->put_object_at(bsmi, 1, bsmi_name);
871
872 Handle type_arg = bootstrap_specifier.type_arg();
873 JVMCIObject bsmi_type = JVMCIENV->get_object_constant(type_arg());
874 JVMCIENV->put_object_at(bsmi, 2, bsmi_type);
875
876 Handle arg_values = bootstrap_specifier.arg_values();
877 if (arg_values.not_null()) {
878 if (!arg_values->is_array()) {
879 JVMCIENV->put_object_at(bsmi, 3, JVMCIENV->get_object_constant(arg_values()));
880 } else if (arg_values->is_objArray()) {
881 objArrayHandle args_array = objArrayHandle(THREAD, (objArrayOop) arg_values());
882 int len = args_array->length();
883 JVMCIObjectArray arguments = JVMCIENV->new_JavaConstant_array(len, JVMCI_CHECK_NULL);
884 JVMCIENV->put_object_at(bsmi, 3, arguments);
885 for (int i = 0; i < len; i++) {
886 oop x = args_array->obj_at(i, CHECK_NULL);
887 if (x != nullptr) {
888 JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_object_constant(x));
889 } else {
890 JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_JavaConstant_NULL_POINTER());
891 }
892 }
893 } else if (arg_values->is_typeArray()) {
894 typeArrayHandle bsci = typeArrayHandle(THREAD, (typeArrayOop) arg_values());
895 JVMCIPrimitiveArray arguments = JVMCIENV->new_intArray(bsci->length(), JVMCI_CHECK_NULL);
896 JVMCIENV->put_object_at(bsmi, 3, arguments);
897 for (int i = 0; i < bsci->length(); i++) {
898 JVMCIENV->put_int_at(arguments, i, bsci->int_at(i));
899 }
900 }
901 }
902 return JVMCIENV->get_jobjectArray(bsmi);
903 C2V_END
904
905 C2V_VMENTRY_0(jint, bootstrapArgumentIndexAt, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint cpi, jint index))
906 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
907 return cp->bootstrap_argument_index_at(cpi, index);
908 C2V_END
909
910 C2V_VMENTRY_0(jint, lookupNameAndTypeRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode))
911 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
912 return cp->name_and_type_ref_index_at(index, (Bytecodes::Code)opcode);
913 C2V_END
914
915 C2V_VMENTRY_NULL(jobject, lookupNameInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode))
916 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
917 JVMCIObject sym = JVMCIENV->create_string(cp->name_ref_at(which, (Bytecodes::Code)opcode), JVMCI_CHECK_NULL);
918 return JVMCIENV->get_jobject(sym);
919 C2V_END
920
921 C2V_VMENTRY_NULL(jobject, lookupSignatureInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode))
922 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
923 JVMCIObject sym = JVMCIENV->create_string(cp->signature_ref_at(which, (Bytecodes::Code)opcode), JVMCI_CHECK_NULL);
924 return JVMCIENV->get_jobject(sym);
925 C2V_END
926
927 C2V_VMENTRY_0(jint, lookupKlassRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode))
928 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
929 return cp->klass_ref_index_at(index, (Bytecodes::Code)opcode);
930 C2V_END
931
932 C2V_VMENTRY_NULL(jobject, resolveTypeInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
933 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
934 Klass* klass = cp->klass_at(index, CHECK_NULL);
935 JVMCIKlassHandle resolved_klass(THREAD, klass);
936 if (resolved_klass->is_instance_klass()) {
937 InstanceKlass::cast(resolved_klass())->link_class(CHECK_NULL);
938 if (!InstanceKlass::cast(resolved_klass())->is_linked()) {
939 // link_class() should not return here if there is an issue.
940 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Class %s must be linked", resolved_klass()->external_name()));
941 }
942 }
943 JVMCIObject klassObject = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
944 return JVMCIENV->get_jobject(klassObject);
945 C2V_END
946
947 C2V_VMENTRY_NULL(jobject, lookupKlassInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
948 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
949 Klass* loading_klass = cp->pool_holder();
950 bool is_accessible = false;
951 JVMCIKlassHandle klass(THREAD, JVMCIRuntime::get_klass_by_index(cp, index, is_accessible, loading_klass));
952 Symbol* symbol = nullptr;
953 if (klass.is_null()) {
954 constantTag tag = cp->tag_at(index);
955 if (tag.is_klass()) {
956 // The klass has been inserted into the constant pool
957 // very recently.
958 klass = cp->resolved_klass_at(index);
959 } else if (tag.is_symbol()) {
960 symbol = cp->symbol_at(index);
961 } else {
962 if (!tag.is_unresolved_klass()) {
963 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Expected %d at index %d, got %d", JVM_CONSTANT_UnresolvedClassInError, index, tag.value()));
964 }
965 symbol = cp->klass_name_at(index);
966 }
967 }
968 JVMCIObject result;
969 if (!klass.is_null()) {
970 result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
971 } else {
972 result = JVMCIENV->create_string(symbol, JVMCI_CHECK_NULL);
973 }
974 return JVMCIENV->get_jobject(result);
975 C2V_END
976
977 C2V_VMENTRY_NULL(jobject, lookupAppendixInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode))
978 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
979 oop appendix_oop = ConstantPool::appendix_at_if_loaded(cp, which, Bytecodes::Code(opcode));
980 return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(appendix_oop));
981 C2V_END
982
983 C2V_VMENTRY_NULL(jobject, lookupMethodInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jbyte opcode, ARGUMENT_PAIR(caller)))
984 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
985 methodHandle caller(THREAD, UNPACK_PAIR(Method, caller));
986 InstanceKlass* pool_holder = cp->pool_holder();
987 Bytecodes::Code bc = (Bytecodes::Code) (((int) opcode) & 0xFF);
988 methodHandle method(THREAD, JVMCIRuntime::get_method_by_index(cp, index, bc, pool_holder));
989 JFR_ONLY(if (method.not_null()) Jfr::on_resolution(caller(), method(), CHECK_NULL);)
990 JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
991 return JVMCIENV->get_jobject(result);
992 C2V_END
993
994 C2V_VMENTRY_NULL(jobject, resolveFieldInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, ARGUMENT_PAIR(method), jbyte opcode, jintArray info_handle))
995 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
996 Bytecodes::Code code = (Bytecodes::Code)(((int) opcode) & 0xFF);
997 fieldDescriptor fd;
998 methodHandle mh(THREAD, UNPACK_PAIR(Method, method));
999
1000 Bytecodes::Code bc = (Bytecodes::Code) (((int) opcode) & 0xFF);
1001 int holder_index = cp->klass_ref_index_at(index, bc);
1002 if (!cp->tag_at(holder_index).is_klass() && !THREAD->can_call_java()) {
1003 // If the holder is not resolved in the constant pool and the current
1004 // thread cannot call Java, return null. This avoids a Java call
1005 // in LinkInfo to load the holder.
1006 Symbol* klass_name = cp->klass_ref_at_noresolve(index, bc);
1007 return nullptr;
1008 }
1009
1010 LinkInfo link_info(cp, index, mh, code, CHECK_NULL);
1011 LinkResolver::resolve_field(fd, link_info, Bytecodes::java_code(code), ClassInitMode::dont_init, CHECK_NULL);
1012 JVMCIPrimitiveArray info = JVMCIENV->wrap(info_handle);
1013 if (info.is_null() || JVMCIENV->get_length(info) != 4) {
1014 JVMCI_ERROR_NULL("info must not be null and have a length of 4");
1015 }
1016 JVMCIENV->put_int_at(info, 0, fd.access_flags().as_field_flags());
1017 JVMCIENV->put_int_at(info, 1, fd.offset());
1018 JVMCIENV->put_int_at(info, 2, fd.index());
1019 JVMCIENV->put_int_at(info, 3, fd.field_flags().as_uint());
1020 JVMCIKlassHandle handle(THREAD, fd.field_holder());
1021 JVMCIObject field_holder = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
1022 return JVMCIENV->get_jobject(field_holder);
1023 C2V_END
1024
1025 C2V_VMENTRY_0(jint, getVtableIndexForInterfaceMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
1026 Klass* klass = UNPACK_PAIR(Klass, klass);
1027 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1028 InstanceKlass* holder = method->method_holder();
1029 if (klass->is_interface()) {
1030 JVMCI_THROW_MSG_0(InternalError, err_msg("Interface %s should be handled in Java code", klass->external_name()));
1031 }
1032 if (!holder->is_interface()) {
1033 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()));
1034 }
1035 if (!klass->is_instance_klass()) {
1036 JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be instance klass", klass->external_name()));
1037 }
1038 if (!InstanceKlass::cast(klass)->is_linked()) {
1039 JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be linked", klass->external_name()));
1040 }
1041 if (!klass->is_subtype_of(holder)) {
1042 JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s does not implement interface %s", klass->external_name(), holder->external_name()));
1043 }
1044 return LinkResolver::vtable_index_of_interface_method(klass, method);
1045 C2V_END
1046
1047 C2V_VMENTRY_NULL(jobject, resolveMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(receiver), ARGUMENT_PAIR(method), ARGUMENT_PAIR(caller)))
1048 Klass* recv_klass = UNPACK_PAIR(Klass, receiver);
1049 Klass* caller_klass = UNPACK_PAIR(Klass, caller);
1050 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1051
1052 Klass* resolved = method->method_holder();
1053 Symbol* h_name = method->name();
1054 Symbol* h_signature = method->signature();
1055
1056 if (MethodHandles::is_signature_polymorphic_method(method())) {
1057 // Signature polymorphic methods are already resolved, JVMCI just returns null in this case.
1058 return nullptr;
1059 }
1060
1061 if (method->name() == vmSymbols::clone_name() &&
1062 resolved == vmClasses::Object_klass() &&
1063 recv_klass->is_array_klass()) {
1064 // Resolution of the clone method on arrays always returns Object.clone even though that method
1065 // has protected access. There's some trickery in the access checking to make this all work out
1066 // so it's necessary to pass in the array class as the resolved class to properly trigger this.
1067 // Otherwise it's impossible to resolve the array clone methods through JVMCI. See
1068 // LinkResolver::check_method_accessability for the matching logic.
1069 resolved = recv_klass;
1070 }
1071
1072 LinkInfo link_info(resolved, h_name, h_signature, caller_klass);
1073 Method* m = nullptr;
1074 // Only do exact lookup if receiver klass has been linked. Otherwise,
1075 // the vtable has not been setup, and the LinkResolver will fail.
1076 if (recv_klass->is_array_klass() ||
1077 (InstanceKlass::cast(recv_klass)->is_linked() && !recv_klass->is_interface())) {
1078 if (resolved->is_interface()) {
1079 m = LinkResolver::resolve_interface_call_or_null(recv_klass, link_info);
1080 } else {
1081 m = LinkResolver::resolve_virtual_call_or_null(recv_klass, link_info);
1082 }
1083 }
1084
1085 if (m == nullptr) {
1086 // Return null if there was a problem with lookup (uninitialized class, etc.)
1087 return nullptr;
1088 }
1089
1090 JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, m), JVMCI_CHECK_NULL);
1091 return JVMCIENV->get_jobject(result);
1092 C2V_END
1093
1094 C2V_VMENTRY_0(jboolean, hasFinalizableSubclass,(JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1095 Klass* klass = UNPACK_PAIR(Klass, klass);
1096 assert(klass != nullptr, "method must not be called for primitive types");
1097 if (!klass->is_instance_klass()) {
1098 return false;
1099 }
1100 InstanceKlass* iklass = InstanceKlass::cast(klass);
1101 return Dependencies::find_finalizable_subclass(iklass) != nullptr;
1102 C2V_END
1103
1104 C2V_VMENTRY_NULL(jobject, getClassInitializer, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
1105 Klass* klass = UNPACK_PAIR(Klass, klass);
1106 if (!klass->is_instance_klass()) {
1107 return nullptr;
1108 }
1109 InstanceKlass* iklass = InstanceKlass::cast(klass);
1110 methodHandle clinit(THREAD, iklass->class_initializer());
1111 JVMCIObject result = JVMCIENV->get_jvmci_method(clinit, JVMCI_CHECK_NULL);
1112 return JVMCIENV->get_jobject(result);
1113 C2V_END
1114
1115 C2V_VMENTRY_0(jlong, getMaxCallTargetOffset, (JNIEnv* env, jobject, jlong addr))
1116 address target_addr = (address) addr;
1117 if (target_addr != nullptr) {
1118 int64_t off_low = (int64_t)target_addr - ((int64_t)CodeCache::low_bound() + sizeof(int));
1119 int64_t off_high = (int64_t)target_addr - ((int64_t)CodeCache::high_bound() + sizeof(int));
1120 return MAX2(ABS(off_low), ABS(off_high));
1121 }
1122 return -1;
1123 C2V_END
1124
1125 C2V_VMENTRY(void, setNotInlinableOrCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1126 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1127 method->set_is_not_c1_compilable();
1128 method->set_is_not_c2_compilable();
1129 method->set_dont_inline(true);
1130 C2V_END
1131
1132 C2V_VMENTRY_0(jint, getInstallCodeFlags, (JNIEnv *env, jobject))
1133 int flags = 0;
1134 #ifndef PRODUCT
1135 flags |= 0x0001; // VM will install block comments
1136 flags |= 0x0004; // Enable HotSpotJVMCIRuntime.Option.CodeSerializationTypeInfo if not explicitly set
1137 #endif
1138 if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
1139 // VM needs to track method dependencies
1140 flags |= 0x0002;
1141 }
1142 return flags;
1143 C2V_END
1144
1145 C2V_VMENTRY_0(jint, installCode0, (JNIEnv *env, jobject,
1146 jlong compiled_code_buffer,
1147 jlong serialization_ns,
1148 bool with_type_info,
1149 jobject compiled_code,
1150 jobjectArray object_pool,
1151 jobject installed_code,
1152 jlong failed_speculations_address,
1153 jbyteArray speculations_obj))
1154 HandleMark hm(THREAD);
1155 JNIHandleMark jni_hm(thread);
1156
1157 JVMCIObject compiled_code_handle = JVMCIENV->wrap(compiled_code);
1158 objArrayHandle object_pool_handle(thread, JVMCIENV->is_hotspot() ? (objArrayOop) JNIHandles::resolve(object_pool) : nullptr);
1159
1160 CodeBlob* cb = nullptr;
1161 JVMCIObject installed_code_handle = JVMCIENV->wrap(installed_code);
1162 JVMCIPrimitiveArray speculations_handle = JVMCIENV->wrap(speculations_obj);
1163
1164 int speculations_len = JVMCIENV->get_length(speculations_handle);
1165 char* speculations = NEW_RESOURCE_ARRAY(char, speculations_len);
1166 JVMCIENV->copy_bytes_to(speculations_handle, (jbyte*) speculations, 0, speculations_len);
1167
1168 JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK_JNI_ERR);
1169 JVMCICompiler::CodeInstallStats* stats = compiler->code_install_stats(!thread->is_Compiler_thread());
1170 elapsedTimer *timer = stats->timer();
1171 timer->add_nanoseconds(serialization_ns);
1172 TraceTime install_time("installCode", timer);
1173
1174 CodeInstaller installer(JVMCIENV);
1175 JVMCINMethodHandle nmethod_handle(THREAD);
1176
1177 JVMCI::CodeInstallResult result = installer.install(compiler,
1178 compiled_code_buffer,
1179 with_type_info,
1180 compiled_code_handle,
1181 object_pool_handle,
1182 cb,
1183 nmethod_handle,
1184 installed_code_handle,
1185 (FailedSpeculation**)(address) failed_speculations_address,
1186 speculations,
1187 speculations_len,
1188 JVMCI_CHECK_0);
1189
1190 if (PrintCodeCacheOnCompilation) {
1191 stringStream s;
1192 // Dump code cache into a buffer before locking the tty,
1193 {
1194 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1195 CodeCache::print_summary(&s, false);
1196 }
1197 ttyLocker ttyl;
1198 tty->print_raw_cr(s.freeze());
1199 }
1200
1201 if (result != JVMCI::ok) {
1202 assert(cb == nullptr, "should be");
1203 } else {
1204 stats->on_install(cb);
1205 if (installed_code_handle.is_non_null()) {
1206 if (cb->is_nmethod()) {
1207 assert(JVMCIENV->isa_HotSpotNmethod(installed_code_handle), "wrong type");
1208 // Clear the link to an old nmethod first
1209 JVMCIObject nmethod_mirror = installed_code_handle;
1210 JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, true, nmethod::InvalidationReason::JVMCI_REPLACED_WITH_NEW_CODE, JVMCI_CHECK_0);
1211 } else {
1212 assert(JVMCIENV->isa_InstalledCode(installed_code_handle), "wrong type");
1213 }
1214 // Initialize the link to the new code blob
1215 JVMCIENV->initialize_installed_code(installed_code_handle, cb, JVMCI_CHECK_0);
1216 }
1217 }
1218 return result;
1219 C2V_END
1220
1221 C2V_VMENTRY_NULL(jobject, getInvalidationReasonDescription, (JNIEnv *env, jobject, jint invalidation_reason))
1222 HandleMark hm(THREAD);
1223 JNIHandleMark jni_hm(thread);
1224 nmethod::InvalidationReason reason = static_cast<nmethod::InvalidationReason>(invalidation_reason);
1225 JVMCIObject desc = JVMCIENV->create_string(nmethod::invalidation_reason_to_string(reason), JVMCI_CHECK_NULL);
1226 return JVMCIENV->get_jobject(desc);
1227 C2V_END
1228
1229 C2V_VMENTRY(void, resetCompilationStatistics, (JNIEnv* env, jobject))
1230 JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK);
1231 CompilerStatistics* stats = compiler->stats();
1232 stats->_standard.reset();
1233 stats->_osr.reset();
1234 C2V_END
1235
1236 C2V_VMENTRY_NULL(jobject, disassembleCodeBlob, (JNIEnv* env, jobject, jobject installedCode))
1237 HandleMark hm(THREAD);
1238
1239 if (installedCode == nullptr) {
1240 JVMCI_THROW_MSG_NULL(NullPointerException, "installedCode is null");
1241 }
1242
1243 JVMCIObject installedCodeObject = JVMCIENV->wrap(installedCode);
1244 CodeBlob* cb = JVMCIENV->get_code_blob(installedCodeObject);
1245 if (cb == nullptr) {
1246 return nullptr;
1247 }
1248
1249 // We don't want the stringStream buffer to resize during disassembly as it
1250 // uses scoped resource memory. If a nested function called during disassembly uses
1251 // a ResourceMark and the buffer expands within the scope of the mark,
1252 // the buffer becomes garbage when that scope is exited. Experience shows that
1253 // the disassembled code is typically about 10x the code size so a fixed buffer
1254 // sized to 20x code size plus a fixed amount for header info should be sufficient.
1255 int bufferSize = cb->code_size() * 20 + 1024;
1256 char* buffer = NEW_RESOURCE_ARRAY(char, bufferSize);
1257 stringStream st(buffer, bufferSize);
1258 Disassembler::decode(cb, &st);
1259 if (st.size() <= 0) {
1260 return nullptr;
1261 }
1262
1263 JVMCIObject result = JVMCIENV->create_string(st.as_string(), JVMCI_CHECK_NULL);
1264 return JVMCIENV->get_jobject(result);
1265 C2V_END
1266
1267 C2V_VMENTRY_NULL(jobject, getStackTraceElement, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int bci))
1268 HandleMark hm(THREAD);
1269
1270 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1271 JVMCIObject element = JVMCIENV->new_StackTraceElement(method, bci, JVMCI_CHECK_NULL);
1272 return JVMCIENV->get_jobject(element);
1273 C2V_END
1274
1275 C2V_VMENTRY_NULL(jobject, executeHotSpotNmethod, (JNIEnv* env, jobject, jobject args, jobject hs_nmethod))
1276 // The incoming arguments array would have to contain JavaConstants instead of regular objects
1277 // and the return value would have to be wrapped as a JavaConstant.
1278 requireInHotSpot("executeHotSpotNmethod", JVMCI_CHECK_NULL);
1279
1280 HandleMark hm(THREAD);
1281
1282 JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod);
1283 methodHandle mh;
1284 {
1285 // Reduce the scope of JVMCINMethodHandle so that it isn't alive across the Java call. Once the
1286 // nmethod has been validated and the method is fetched from the nmethod it's fine for the
1287 // nmethod to be reclaimed if necessary.
1288 JVMCINMethodHandle nmethod_handle(THREAD);
1289 nmethod* nm = JVMCIENV->get_nmethod(nmethod_mirror, nmethod_handle);
1290 if (nm == nullptr || !nm->is_in_use()) {
1291 JVMCI_THROW_NULL(InvalidInstalledCodeException);
1292 }
1293 methodHandle nmh(THREAD, nm->method());
1294 mh = nmh;
1295 }
1296 Symbol* signature = mh->signature();
1297 JavaCallArguments jca(mh->size_of_parameters());
1298
1299 arrayOop args_array = (arrayOop) JNIHandles::resolve(args);
1300 if (args_array->is_flatArray()) {
1301 JVMCI_THROW_MSG_NULL(IllegalStateException, "executeHotSpotNmethod cannot handle flat args arrays");
1302 }
1303
1304 JavaArgumentUnboxer jap(signature, &jca, args_array, mh->is_static());
1305 JavaValue result(jap.return_type());
1306 jca.set_alternative_target(Handle(THREAD, JNIHandles::resolve(nmethod_mirror.as_jobject())));
1307 JavaCalls::call(&result, mh, &jca, CHECK_NULL);
1308
1309 if (jap.return_type() == T_VOID) {
1310 return nullptr;
1311 } else if (is_reference_type(jap.return_type())) {
1312 return JNIHandles::make_local(THREAD, result.get_oop());
1313 } else {
1314 jvalue *value = (jvalue *) result.get_value_addr();
1315 // Narrow the value down if required (Important on big endian machines)
1316 switch (jap.return_type()) {
1317 case T_BOOLEAN:
1318 value->z = (jboolean) value->i;
1319 break;
1320 case T_BYTE:
1321 value->b = (jbyte) value->i;
1322 break;
1323 case T_CHAR:
1324 value->c = (jchar) value->i;
1325 break;
1326 case T_SHORT:
1327 value->s = (jshort) value->i;
1328 break;
1329 default:
1330 break;
1331 }
1332 JVMCIObject o = JVMCIENV->create_box(jap.return_type(), value, JVMCI_CHECK_NULL);
1333 return JVMCIENV->get_jobject(o);
1334 }
1335 C2V_END
1336
1337 C2V_VMENTRY_NULL(jlongArray, getLineNumberTable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1338 Method* method = UNPACK_PAIR(Method, method);
1339 if (!method->has_linenumber_table()) {
1340 return nullptr;
1341 }
1342 u2 num_entries = 0;
1343 CompressedLineNumberReadStream streamForSize(method->compressed_linenumber_table());
1344 while (streamForSize.read_pair()) {
1345 num_entries++;
1346 }
1347
1348 CompressedLineNumberReadStream stream(method->compressed_linenumber_table());
1349 JVMCIPrimitiveArray result = JVMCIENV->new_longArray(2 * num_entries, JVMCI_CHECK_NULL);
1350
1351 int i = 0;
1352 jlong value;
1353 while (stream.read_pair()) {
1354 value = ((jlong) stream.bci());
1355 JVMCIENV->put_long_at(result, i, value);
1356 value = ((jlong) stream.line());
1357 JVMCIENV->put_long_at(result, i + 1, value);
1358 i += 2;
1359 }
1360
1361 return (jlongArray) JVMCIENV->get_jobject(result);
1362 C2V_END
1363
1364 C2V_VMENTRY_0(jlong, getLocalVariableTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1365 Method* method = UNPACK_PAIR(Method, method);
1366 if (!method->has_localvariable_table()) {
1367 return 0;
1368 }
1369 return (jlong) (address) method->localvariable_table_start();
1370 C2V_END
1371
1372 C2V_VMENTRY_0(jint, getLocalVariableTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1373 Method* method = UNPACK_PAIR(Method, method);
1374 return method->localvariable_table_length();
1375 C2V_END
1376
1377 static MethodData* get_profiling_method_data(const methodHandle& method, TRAPS) {
1378 MethodData* method_data = method->method_data();
1379 if (method_data == nullptr) {
1380 method->build_profiling_method_data(method, CHECK_NULL);
1381 method_data = method->method_data();
1382 if (method_data == nullptr) {
1383 THROW_MSG_NULL(vmSymbols::java_lang_OutOfMemoryError(), "cannot allocate MethodData")
1384 }
1385 }
1386 return method_data;
1387 }
1388
1389 C2V_VMENTRY(void, reprofile, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
1390 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1391 MethodCounters* mcs = method->method_counters();
1392 if (mcs != nullptr) {
1393 mcs->clear_counters();
1394 }
1395 NOT_PRODUCT(method->set_compiled_invocation_count(0));
1396
1397 nmethod* code = method->code();
1398 if (code != nullptr) {
1399 code->make_not_entrant(nmethod::InvalidationReason::JVMCI_REPROFILE);
1400 }
1401
1402 MethodData* method_data = method->method_data();
1403 if (method_data == nullptr) {
1404 method_data = get_profiling_method_data(method, CHECK);
1405 } else {
1406 CompilerThreadCanCallJava canCallJava(THREAD, true);
1407 method_data->reinitialize();
1408 }
1409 C2V_END
1410
1411
1412 C2V_VMENTRY(void, invalidateHotSpotNmethod, (JNIEnv* env, jobject, jobject hs_nmethod, jboolean deoptimize, jint invalidation_reason))
1413 int first = static_cast<int>(nmethod::InvalidationReason::C1_CODEPATCH);
1414 int last = static_cast<int>(nmethod::InvalidationReason::INVALIDATION_REASONS_COUNT);
1415 if (invalidation_reason < first || invalidation_reason >= last) {
1416 JVMCI_THROW_MSG(IllegalArgumentException, err_msg("Invalid invalidation_reason: %d", invalidation_reason));
1417 }
1418 JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod);
1419 JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, deoptimize, static_cast<nmethod::InvalidationReason>(invalidation_reason), JVMCI_CHECK);
1420 C2V_END
1421
1422 C2V_VMENTRY_NULL(jlongArray, collectCounters, (JNIEnv* env, jobject))
1423 // Returns a zero length array if counters aren't enabled
1424 JVMCIPrimitiveArray array = JVMCIENV->new_longArray(JVMCICounterSize, JVMCI_CHECK_NULL);
1425 if (JVMCICounterSize > 0) {
1426 jlong* temp_array = NEW_RESOURCE_ARRAY(jlong, JVMCICounterSize);
1427 JavaThread::collect_counters(temp_array, JVMCICounterSize);
1428 JVMCIENV->copy_longs_from(temp_array, array, 0, JVMCICounterSize);
1429 }
1430 return (jlongArray) JVMCIENV->get_jobject(array);
1431 C2V_END
1432
1433 C2V_VMENTRY_0(jint, getCountersSize, (JNIEnv* env, jobject))
1434 return (jint) JVMCICounterSize;
1435 C2V_END
1436
1437 C2V_VMENTRY_0(jboolean, setCountersSize, (JNIEnv* env, jobject, jint new_size))
1438 return JavaThread::resize_all_jvmci_counters(new_size);
1439 C2V_END
1440
1441 C2V_VMENTRY_0(jint, allocateCompileId, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci))
1442 HandleMark hm(THREAD);
1443 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
1444 if (method.is_null()) {
1445 JVMCI_THROW_0(NullPointerException);
1446 }
1447 if (entry_bci >= method->code_size() || entry_bci < -1) {
1448 JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Unexpected bci %d", entry_bci));
1449 }
1450 return CompileBroker::assign_compile_id_unlocked(THREAD, method, entry_bci);
1451 C2V_END
1452
1453
1454 C2V_VMENTRY_0(jboolean, isMature, (JNIEnv* env, jobject, jlong method_data_pointer))
1455 MethodData* mdo = (MethodData*) method_data_pointer;
1456 return mdo != nullptr && mdo->is_mature();
1457 C2V_END
1458
1459 C2V_VMENTRY_0(jboolean, hasCompiledCodeForOSR, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci, int comp_level))
1460 Method* method = UNPACK_PAIR(Method, method);
1461 return method->lookup_osr_nmethod_for(entry_bci, comp_level, true) != nullptr;
1462 C2V_END
1463
1464 C2V_VMENTRY_NULL(jobject, getSymbol, (JNIEnv* env, jobject, jlong symbol))
1465 JVMCIObject sym = JVMCIENV->create_string((Symbol*)(address)symbol, JVMCI_CHECK_NULL);
1466 return JVMCIENV->get_jobject(sym);
1467 C2V_END
1468
1469 C2V_VMENTRY_NULL(jobject, getSignatureName, (JNIEnv* env, jobject, jlong klass_pointer))
1470 Klass* klass = UNPACK_PAIR(Klass, klass);
1471 JVMCIObject signature = JVMCIENV->create_string(klass->signature_name(), JVMCI_CHECK_NULL);
1472 return JVMCIENV->get_jobject(signature);
1473 C2V_END
1474
1475 /*
1476 * Used by matches() to convert a ResolvedJavaMethod[] to an array of Method*.
1477 */
1478 static GrowableArray<Method*>* init_resolved_methods(jobjectArray methods, JVMCIEnv* JVMCIENV) {
1479 refArrayOop methods_oop = (refArrayOop) JNIHandles::resolve(methods);
1480 GrowableArray<Method*>* resolved_methods = new GrowableArray<Method*>(methods_oop->length());
1481 for (int i = 0; i < methods_oop->length(); i++) {
1482 oop resolved = methods_oop->obj_at(i);
1483 Method* resolved_method = nullptr;
1484 if (resolved->klass() == HotSpotJVMCI::HotSpotResolvedJavaMethodImpl::klass()) {
1485 resolved_method = HotSpotJVMCI::asMethod(JVMCIENV, resolved);
1486 }
1487 resolved_methods->append(resolved_method);
1488 }
1489 return resolved_methods;
1490 }
1491
1492 /*
1493 * Used by c2v_iterateFrames to check if `method` matches one of the ResolvedJavaMethods in the `methods` array.
1494 * The ResolvedJavaMethod[] array is converted to a Method* array that is then cached in the resolved_methods_ref in/out parameter.
1495 * In case of a match, the matching ResolvedJavaMethod is returned in matched_jvmci_method_ref.
1496 */
1497 static bool matches(jobjectArray methods, Method* method, GrowableArray<Method*>** resolved_methods_ref, Handle* matched_jvmci_method_ref, Thread* THREAD, JVMCIEnv* JVMCIENV) {
1498 GrowableArray<Method*>* resolved_methods = *resolved_methods_ref;
1499 if (resolved_methods == nullptr) {
1500 resolved_methods = init_resolved_methods(methods, JVMCIENV);
1501 *resolved_methods_ref = resolved_methods;
1502 }
1503 assert(method != nullptr, "method should not be null");
1504 assert(resolved_methods->length() == ((objArrayOop) JNIHandles::resolve(methods))->length(), "arrays must have the same length");
1505 for (int i = 0; i < resolved_methods->length(); i++) {
1506 Method* m = resolved_methods->at(i);
1507 if (m == method) {
1508 *matched_jvmci_method_ref = Handle(THREAD, refArrayOop(JNIHandles::resolve(methods))->obj_at(i));
1509 return true;
1510 }
1511 }
1512 return false;
1513 }
1514
1515 /*
1516 * Resolves an interface call to a concrete method handle.
1517 */
1518 static methodHandle resolve_interface_call(Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
1519 CallInfo callinfo;
1520 Handle receiver = args->receiver();
1521 Klass* recvrKlass = receiver.is_null() ? (Klass*)nullptr : receiver->klass();
1522 LinkInfo link_info(spec_klass, name, signature);
1523 LinkResolver::resolve_interface_call(
1524 callinfo, receiver, recvrKlass, link_info, true, CHECK_(methodHandle()));
1525 methodHandle method(THREAD, callinfo.selected_method());
1526 assert(method.not_null(), "should have thrown exception");
1527 return method;
1528 }
1529
1530 /*
1531 * Used by c2v_iterateFrames to make a new vframeStream at the given compiled frame id (stack pointer) and vframe id.
1532 */
1533 static void resync_vframestream_to_compiled_frame(vframeStream& vfst, intptr_t* stack_pointer, int vframe_id, JavaThread* thread, TRAPS) {
1534 vfst = vframeStream(thread);
1535 while (vfst.frame_id() != stack_pointer && !vfst.at_end()) {
1536 vfst.next();
1537 }
1538 if (vfst.frame_id() != stack_pointer) {
1539 THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "stack frame not found after deopt")
1540 }
1541 if (vfst.is_interpreted_frame()) {
1542 THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "compiled stack frame expected")
1543 }
1544 while (vfst.vframe_id() != vframe_id) {
1545 if (vfst.at_end()) {
1546 THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "vframe not found after deopt")
1547 }
1548 vfst.next();
1549 assert(!vfst.is_interpreted_frame(), "Wrong frame type");
1550 }
1551 }
1552
1553 /*
1554 * Used by c2v_iterateFrames. Returns an array of any unallocated scope objects or null if none.
1555 */
1556 static GrowableArray<ScopeValue*>* get_unallocated_objects_or_null(GrowableArray<ScopeValue*>* scope_objects) {
1557 GrowableArray<ScopeValue*>* unallocated = nullptr;
1558 for (int i = 0; i < scope_objects->length(); i++) {
1559 ObjectValue* sv = (ObjectValue*) scope_objects->at(i);
1560 if (sv->value().is_null()) {
1561 if (unallocated == nullptr) {
1562 unallocated = new GrowableArray<ScopeValue*>(scope_objects->length());
1563 }
1564 unallocated->append(sv);
1565 }
1566 }
1567 return unallocated;
1568 }
1569
1570 C2V_VMENTRY_NULL(jobject, iterateFrames, (JNIEnv* env, jobject compilerToVM, jobjectArray initial_methods, jobjectArray match_methods, jint initialSkip, jobject visitor_handle))
1571
1572 if (!thread->has_last_Java_frame()) {
1573 return nullptr;
1574 }
1575 Handle visitor(THREAD, JNIHandles::resolve_non_null(visitor_handle));
1576 KeepStackGCProcessedMark keep_stack(THREAD);
1577
1578 requireInHotSpot("iterateFrames", JVMCI_CHECK_NULL);
1579
1580 HotSpotJVMCI::HotSpotStackFrameReference::klass()->initialize(CHECK_NULL);
1581
1582 vframeStream vfst(thread);
1583 jobjectArray methods = initial_methods;
1584 methodHandle visitor_method;
1585 GrowableArray<Method*>* resolved_methods = nullptr;
1586
1587 while (!vfst.at_end()) { // frame loop
1588 bool realloc_called = false;
1589 intptr_t* frame_id = vfst.frame_id();
1590
1591 // Previous compiledVFrame of this frame; use with at_scope() to reuse scope object pool.
1592 compiledVFrame* prev_cvf = nullptr;
1593
1594 for (; !vfst.at_end() && vfst.frame_id() == frame_id; vfst.next()) { // vframe loop
1595 int frame_number = 0;
1596 Method *method = vfst.method();
1597 int bci = vfst.bci();
1598
1599 Handle matched_jvmci_method;
1600 if (methods == nullptr || matches(methods, method, &resolved_methods, &matched_jvmci_method, THREAD, JVMCIENV)) {
1601 if (initialSkip > 0) {
1602 initialSkip--;
1603 continue;
1604 }
1605 javaVFrame* vf;
1606 if (prev_cvf != nullptr && prev_cvf->frame_pointer()->id() == frame_id) {
1607 assert(prev_cvf->is_compiled_frame(), "expected compiled Java frame");
1608 vf = prev_cvf->at_scope(vfst.decode_offset(), vfst.vframe_id());
1609 } else {
1610 vf = vfst.asJavaVFrame();
1611 }
1612
1613 StackValueCollection* locals = nullptr;
1614 typeArrayHandle localIsVirtual_h;
1615 if (vf->is_compiled_frame()) {
1616 // compiled method frame
1617 compiledVFrame* cvf = compiledVFrame::cast(vf);
1618
1619 ScopeDesc* scope = cvf->scope();
1620 // native wrappers do not have a scope
1621 if (scope != nullptr && scope->objects() != nullptr) {
1622 prev_cvf = cvf;
1623
1624 GrowableArray<ScopeValue*>* objects = nullptr;
1625 if (!realloc_called) {
1626 objects = scope->objects();
1627 } else {
1628 // some object might already have been re-allocated, only reallocate the non-allocated ones
1629 objects = get_unallocated_objects_or_null(scope->objects());
1630 }
1631
1632 if (objects != nullptr) {
1633 RegisterMap reg_map(vf->register_map());
1634 bool realloc_failures = Deoptimization::realloc_objects(thread, vf->frame_pointer(), ®_map, objects, CHECK_NULL);
1635 Deoptimization::reassign_fields(vf->frame_pointer(), ®_map, objects, realloc_failures, false, CHECK_NULL);
1636 realloc_called = true;
1637 }
1638
1639 GrowableArray<ScopeValue*>* local_values = scope->locals();
1640 for (int i = 0; i < local_values->length(); i++) {
1641 ScopeValue* value = local_values->at(i);
1642 assert(!value->is_object_merge(), "Should not be.");
1643 if (value->is_object()) {
1644 if (localIsVirtual_h.is_null()) {
1645 typeArrayOop array_oop = oopFactory::new_boolArray(local_values->length(), CHECK_NULL);
1646 localIsVirtual_h = typeArrayHandle(THREAD, array_oop);
1647 }
1648 localIsVirtual_h->bool_at_put(i, true);
1649 }
1650 }
1651 }
1652
1653 locals = cvf->locals();
1654 frame_number = cvf->vframe_id();
1655 } else {
1656 // interpreted method frame
1657 interpretedVFrame* ivf = interpretedVFrame::cast(vf);
1658
1659 locals = ivf->locals();
1660 }
1661 assert(bci == vf->bci(), "wrong bci");
1662 assert(method == vf->method(), "wrong method");
1663
1664 Handle frame_reference = HotSpotJVMCI::HotSpotStackFrameReference::klass()->allocate_instance_handle(CHECK_NULL);
1665 HotSpotJVMCI::HotSpotStackFrameReference::set_bci(JVMCIENV, frame_reference(), bci);
1666 if (matched_jvmci_method.is_null()) {
1667 methodHandle mh(THREAD, method);
1668 JVMCIObject jvmci_method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
1669 matched_jvmci_method = Handle(THREAD, JNIHandles::resolve(jvmci_method.as_jobject()));
1670 }
1671 HotSpotJVMCI::HotSpotStackFrameReference::set_method(JVMCIENV, frame_reference(), matched_jvmci_method());
1672 HotSpotJVMCI::HotSpotStackFrameReference::set_localIsVirtual(JVMCIENV, frame_reference(), localIsVirtual_h());
1673
1674 HotSpotJVMCI::HotSpotStackFrameReference::set_compilerToVM(JVMCIENV, frame_reference(), JNIHandles::resolve(compilerToVM));
1675 HotSpotJVMCI::HotSpotStackFrameReference::set_stackPointer(JVMCIENV, frame_reference(), (jlong) frame_id);
1676 HotSpotJVMCI::HotSpotStackFrameReference::set_frameNumber(JVMCIENV, frame_reference(), frame_number);
1677
1678 // initialize the locals array
1679 refArrayOop array_oop = oopFactory::new_objectArray(locals->size(), CHECK_NULL);
1680 refArrayHandle array(THREAD, array_oop);
1681 for (int i = 0; i < locals->size(); i++) {
1682 StackValue* var = locals->at(i);
1683 if (var->type() == T_OBJECT) {
1684 array->obj_at_put(i, locals->at(i)->get_obj()());
1685 }
1686 }
1687 HotSpotJVMCI::HotSpotStackFrameReference::set_locals(JVMCIENV, frame_reference(), array());
1688 HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, frame_reference(), JNI_FALSE);
1689
1690 JavaValue result(T_OBJECT);
1691 JavaCallArguments args(visitor);
1692 if (visitor_method.is_null()) {
1693 visitor_method = resolve_interface_call(HotSpotJVMCI::InspectedFrameVisitor::klass(), vmSymbols::visitFrame_name(), vmSymbols::visitFrame_signature(), &args, CHECK_NULL);
1694 }
1695
1696 args.push_oop(frame_reference);
1697 JavaCalls::call(&result, visitor_method, &args, CHECK_NULL);
1698 if (result.get_oop() != nullptr) {
1699 return JNIHandles::make_local(thread, result.get_oop());
1700 }
1701 if (methods == initial_methods) {
1702 methods = match_methods;
1703 if (resolved_methods != nullptr && JNIHandles::resolve(match_methods) != JNIHandles::resolve(initial_methods)) {
1704 resolved_methods = nullptr;
1705 }
1706 }
1707 assert(initialSkip == 0, "There should be no match before initialSkip == 0");
1708 if (HotSpotJVMCI::HotSpotStackFrameReference::objectsMaterialized(JVMCIENV, frame_reference()) == JNI_TRUE) {
1709 // the frame has been deoptimized, we need to re-synchronize the frame and vframe
1710 prev_cvf = nullptr;
1711 intptr_t* stack_pointer = (intptr_t*) HotSpotJVMCI::HotSpotStackFrameReference::stackPointer(JVMCIENV, frame_reference());
1712 resync_vframestream_to_compiled_frame(vfst, stack_pointer, frame_number, thread, CHECK_NULL);
1713 }
1714 }
1715 } // end of vframe loop
1716 } // end of frame loop
1717
1718 // the end was reached without finding a matching method
1719 return nullptr;
1720 C2V_END
1721
1722 C2V_VMENTRY_0(int, decodeIndyIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint indy_index, jboolean resolve))
1723 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1724 CallInfo callInfo;
1725 if (resolve) {
1726 LinkResolver::resolve_invoke(callInfo, Handle(), cp, indy_index, Bytecodes::_invokedynamic, CHECK_0);
1727 cp->cache()->set_dynamic_call(callInfo, indy_index);
1728 }
1729 return cp->resolved_indy_entry_at(indy_index)->constant_pool_index();
1730 C2V_END
1731
1732 C2V_VMENTRY_0(int, decodeFieldIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint field_index))
1733 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1734 if (field_index < 0 || field_index >= cp->resolved_field_entries_length()) {
1735 JVMCI_THROW_MSG_0(IllegalStateException, err_msg("invalid field index %d", field_index));
1736 }
1737 return cp->resolved_field_entry_at(field_index)->constant_pool_index();
1738 C2V_END
1739
1740 C2V_VMENTRY_0(int, decodeMethodIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint method_index))
1741 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1742 if (method_index < 0 || method_index >= cp->resolved_method_entries_length()) {
1743 JVMCI_THROW_MSG_0(IllegalStateException, err_msg("invalid method index %d", method_index));
1744 }
1745 return cp->resolved_method_entry_at(method_index)->constant_pool_index();
1746 C2V_END
1747
1748 C2V_VMENTRY(void, resolveInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
1749 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1750 Klass* holder = cp->klass_ref_at(index, Bytecodes::_invokehandle, CHECK);
1751 Symbol* name = cp->name_ref_at(index, Bytecodes::_invokehandle);
1752 if (MethodHandles::is_signature_polymorphic_name(holder, name)) {
1753 CallInfo callInfo;
1754 LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, Bytecodes::_invokehandle, CHECK);
1755 cp->cache()->set_method_handle(index, callInfo);
1756 }
1757 C2V_END
1758
1759 C2V_VMENTRY_0(jint, isResolvedInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode))
1760 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
1761 ResolvedMethodEntry* entry = cp->cache()->resolved_method_entry_at(index);
1762 if (entry->is_resolved(Bytecodes::_invokehandle)) {
1763 // MethodHandle.invoke* --> LambdaForm?
1764 ResourceMark rm;
1765
1766 LinkInfo link_info(cp, index, Bytecodes::_invokehandle, CATCH);
1767
1768 Klass* resolved_klass = link_info.resolved_klass();
1769
1770 Symbol* name_sym = cp->name_ref_at(index, Bytecodes::_invokehandle);
1771
1772 vmassert(MethodHandles::is_method_handle_invoke_name(resolved_klass, name_sym), "!");
1773 vmassert(MethodHandles::is_signature_polymorphic_name(resolved_klass, name_sym), "!");
1774
1775 methodHandle adapter_method(THREAD, entry->method());
1776
1777 methodHandle resolved_method(adapter_method);
1778
1779 // Can we treat it as a regular invokevirtual?
1780 if (resolved_method->method_holder() == resolved_klass && resolved_method->name() == name_sym) {
1781 vmassert(!resolved_method->is_static(),"!");
1782 vmassert(MethodHandles::is_signature_polymorphic_method(resolved_method()),"!");
1783 vmassert(!MethodHandles::is_signature_polymorphic_static(resolved_method->intrinsic_id()), "!");
1784 vmassert(cp->cache()->appendix_if_resolved(entry) == nullptr, "!");
1785
1786 methodHandle m(THREAD, LinkResolver::linktime_resolve_virtual_method_or_null(link_info));
1787 vmassert(m == resolved_method, "!!");
1788 return -1;
1789 }
1790
1791 return Bytecodes::_invokevirtual;
1792 }
1793 if ((Bytecodes::Code)opcode == Bytecodes::_invokedynamic) {
1794 if (cp->resolved_indy_entry_at(index)->is_resolved()) {
1795 return Bytecodes::_invokedynamic;
1796 }
1797 }
1798 return -1;
1799 C2V_END
1800
1801
1802 C2V_VMENTRY_NULL(jobject, getSignaturePolymorphicHolders, (JNIEnv* env, jobject))
1803 JVMCIObjectArray holders = JVMCIENV->new_String_array(2, JVMCI_CHECK_NULL);
1804 JVMCIObject mh = JVMCIENV->create_string("Ljava/lang/invoke/MethodHandle;", JVMCI_CHECK_NULL);
1805 JVMCIObject vh = JVMCIENV->create_string("Ljava/lang/invoke/VarHandle;", JVMCI_CHECK_NULL);
1806 JVMCIENV->put_object_at(holders, 0, mh);
1807 JVMCIENV->put_object_at(holders, 1, vh);
1808 return JVMCIENV->get_jobject(holders);
1809 C2V_END
1810
1811 C2V_VMENTRY_0(jboolean, shouldDebugNonSafepoints, (JNIEnv* env, jobject))
1812 //see compute_recording_non_safepoints in debugInfroRec.cpp
1813 if (JvmtiExport::should_post_compiled_method_load() && FLAG_IS_DEFAULT(DebugNonSafepoints)) {
1814 return true;
1815 }
1816 return DebugNonSafepoints;
1817 C2V_END
1818
1819 // public native void materializeVirtualObjects(HotSpotStackFrameReference stackFrame, boolean invalidate);
1820 C2V_VMENTRY(void, materializeVirtualObjects, (JNIEnv* env, jobject, jobject _hs_frame, bool invalidate))
1821 JVMCIObject hs_frame = JVMCIENV->wrap(_hs_frame);
1822 if (hs_frame.is_null()) {
1823 JVMCI_THROW_MSG(NullPointerException, "stack frame is null");
1824 }
1825
1826 requireInHotSpot("materializeVirtualObjects", JVMCI_CHECK);
1827
1828 JVMCIENV->HotSpotStackFrameReference_initialize(JVMCI_CHECK);
1829
1830 // look for the given stack frame
1831 StackFrameStream fst(thread, false /* update */, true /* process_frames */);
1832 intptr_t* stack_pointer = (intptr_t*) JVMCIENV->get_HotSpotStackFrameReference_stackPointer(hs_frame);
1833 while (fst.current()->id() != stack_pointer && !fst.is_done()) {
1834 fst.next();
1835 }
1836 if (fst.current()->id() != stack_pointer) {
1837 JVMCI_THROW_MSG(IllegalStateException, "stack frame not found");
1838 }
1839
1840 if (invalidate) {
1841 if (!fst.current()->is_compiled_frame()) {
1842 JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected");
1843 }
1844 fst.current()->cb()->as_nmethod()->make_not_entrant(nmethod::InvalidationReason::JVMCI_MATERIALIZE_VIRTUAL_OBJECT);
1845 }
1846 Deoptimization::deoptimize(thread, *fst.current(), Deoptimization::Reason_none);
1847 // look for the frame again as it has been updated by deopt (pc, deopt state...)
1848 StackFrameStream fstAfterDeopt(thread, true /* update */, true /* process_frames */);
1849 while (fstAfterDeopt.current()->id() != stack_pointer && !fstAfterDeopt.is_done()) {
1850 fstAfterDeopt.next();
1851 }
1852 if (fstAfterDeopt.current()->id() != stack_pointer) {
1853 JVMCI_THROW_MSG(IllegalStateException, "stack frame not found after deopt");
1854 }
1855
1856 vframe* vf = vframe::new_vframe(fstAfterDeopt.current(), fstAfterDeopt.register_map(), thread);
1857 if (!vf->is_compiled_frame()) {
1858 JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected");
1859 }
1860
1861 GrowableArray<compiledVFrame*>* virtualFrames = new GrowableArray<compiledVFrame*>(10);
1862 while (true) {
1863 assert(vf->is_compiled_frame(), "Wrong frame type");
1864 virtualFrames->push(compiledVFrame::cast(vf));
1865 if (vf->is_top()) {
1866 break;
1867 }
1868 vf = vf->sender();
1869 }
1870
1871 int last_frame_number = JVMCIENV->get_HotSpotStackFrameReference_frameNumber(hs_frame);
1872 if (last_frame_number >= virtualFrames->length()) {
1873 JVMCI_THROW_MSG(IllegalStateException, "invalid frame number");
1874 }
1875
1876 // Reallocate the non-escaping objects and restore their fields.
1877 assert (virtualFrames->at(last_frame_number)->scope() != nullptr,"invalid scope");
1878 GrowableArray<ScopeValue*>* objects = virtualFrames->at(last_frame_number)->scope()->objects();
1879
1880 if (objects == nullptr) {
1881 // no objects to materialize
1882 return;
1883 }
1884
1885 bool realloc_failures = Deoptimization::realloc_objects(thread, fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, CHECK);
1886 Deoptimization::reassign_fields(fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, realloc_failures, false, THREAD);
1887
1888 for (int frame_index = 0; frame_index < virtualFrames->length(); frame_index++) {
1889 compiledVFrame* cvf = virtualFrames->at(frame_index);
1890
1891 GrowableArray<ScopeValue*>* scopedValues = cvf->scope()->locals();
1892 StackValueCollection* locals = cvf->locals();
1893 if (locals != nullptr) {
1894 for (int i2 = 0; i2 < locals->size(); i2++) {
1895 StackValue* var = locals->at(i2);
1896 assert(!scopedValues->at(i2)->is_object_merge(), "Should not be.");
1897 if (var->type() == T_OBJECT && scopedValues->at(i2)->is_object()) {
1898 jvalue val;
1899 val.l = cast_from_oop<jobject>(locals->at(i2)->get_obj()());
1900 cvf->update_local(T_OBJECT, i2, val);
1901 }
1902 }
1903 }
1904
1905 GrowableArray<ScopeValue*>* scopeExpressions = cvf->scope()->expressions();
1906 StackValueCollection* expressions = cvf->expressions();
1907 if (expressions != nullptr) {
1908 for (int i2 = 0; i2 < expressions->size(); i2++) {
1909 StackValue* var = expressions->at(i2);
1910 assert(!scopeExpressions->at(i2)->is_object_merge(), "Should not be.");
1911 if (var->type() == T_OBJECT && scopeExpressions->at(i2)->is_object()) {
1912 jvalue val;
1913 val.l = cast_from_oop<jobject>(expressions->at(i2)->get_obj()());
1914 cvf->update_stack(T_OBJECT, i2, val);
1915 }
1916 }
1917 }
1918
1919 GrowableArray<MonitorValue*>* scopeMonitors = cvf->scope()->monitors();
1920 GrowableArray<MonitorInfo*>* monitors = cvf->monitors();
1921 if (monitors != nullptr) {
1922 for (int i2 = 0; i2 < monitors->length(); i2++) {
1923 cvf->update_monitor(i2, monitors->at(i2));
1924 }
1925 }
1926 }
1927
1928 // all locals are materialized by now
1929 JVMCIENV->set_HotSpotStackFrameReference_localIsVirtual(hs_frame, nullptr);
1930 // update the locals array
1931 JVMCIObjectArray array = JVMCIENV->get_HotSpotStackFrameReference_locals(hs_frame);
1932 StackValueCollection* locals = virtualFrames->at(last_frame_number)->locals();
1933 for (int i = 0; i < locals->size(); i++) {
1934 StackValue* var = locals->at(i);
1935 if (var->type() == T_OBJECT) {
1936 JVMCIENV->put_object_at(array, i, HotSpotJVMCI::wrap(locals->at(i)->get_obj()()));
1937 }
1938 }
1939 HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, hs_frame, JNI_TRUE);
1940 C2V_END
1941
1942 // Use of tty does not require the current thread to be attached to the VM
1943 // so no need for a full C2V_VMENTRY transition.
1944 C2V_VMENTRY_PREFIX(void, writeDebugOutput, (JNIEnv* env, jobject, jlong buffer, jint length, bool flush))
1945 if (length <= 8) {
1946 tty->write((char*) &buffer, length);
1947 } else {
1948 tty->write((char*) buffer, length);
1949 }
1950 if (flush) {
1951 tty->flush();
1952 }
1953 C2V_END
1954
1955 // Use of tty does not require the current thread to be attached to the VM
1956 // so no need for a full C2V_VMENTRY transition.
1957 C2V_VMENTRY_PREFIX(void, flushDebugOutput, (JNIEnv* env, jobject))
1958 tty->flush();
1959 C2V_END
1960
1961 C2V_VMENTRY_0(jint, methodDataProfileDataSize, (JNIEnv* env, jobject, jlong method_data_pointer, jint position))
1962 MethodData* mdo = (MethodData*) method_data_pointer;
1963 ProfileData* profile_data = mdo->data_at(position);
1964 if (mdo->is_valid(profile_data)) {
1965 return profile_data->size_in_bytes();
1966 }
1967 // Java code should never directly access the extra data section
1968 JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Invalid profile data position %d", position));
1969 C2V_END
1970
1971 C2V_VMENTRY_0(jint, methodDataExceptionSeen, (JNIEnv* env, jobject, jlong method_data_pointer, jint bci))
1972 MethodData* mdo = (MethodData*) method_data_pointer;
1973
1974 // Lock to read ProfileData, and ensure lock is not broken by a safepoint
1975 MutexLocker mu(mdo->extra_data_lock(), Mutex::_no_safepoint_check_flag);
1976
1977 DataLayout* data = mdo->extra_data_base();
1978 DataLayout* end = mdo->args_data_limit();
1979 for (;; data = mdo->next_extra(data)) {
1980 assert(data < end, "moved past end of extra data");
1981 int tag = data->tag();
1982 switch(tag) {
1983 case DataLayout::bit_data_tag: {
1984 BitData* bit_data = (BitData*) data->data_in();
1985 if (bit_data->bci() == bci) {
1986 return bit_data->exception_seen() ? 1 : 0;
1987 }
1988 break;
1989 }
1990 case DataLayout::no_tag:
1991 // There is a free slot so return false since a BitData would have been allocated to record
1992 // true if it had been seen.
1993 return 0;
1994 case DataLayout::arg_info_data_tag:
1995 // The bci wasn't found and there are no free slots to record a trap for this location, so always
1996 // return unknown.
1997 return -1;
1998 }
1999 }
2000 ShouldNotReachHere();
2001 return -1;
2002 C2V_END
2003
2004 C2V_VMENTRY_NULL(jobject, getInterfaces, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2005 Klass* klass = UNPACK_PAIR(Klass, klass);
2006 if (klass == nullptr) {
2007 JVMCI_THROW_NULL(NullPointerException);
2008 }
2009
2010 if (!klass->is_instance_klass()) {
2011 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Class %s must be instance klass", klass->external_name()));
2012 }
2013 InstanceKlass* iklass = InstanceKlass::cast(klass);
2014
2015 // Regular instance klass, fill in all local interfaces
2016 int size = iklass->local_interfaces()->length();
2017 JVMCIObjectArray interfaces = JVMCIENV->new_HotSpotResolvedObjectTypeImpl_array(size, JVMCI_CHECK_NULL);
2018 for (int index = 0; index < size; index++) {
2019 JVMCIKlassHandle klass(THREAD);
2020 InstanceKlass* k = iklass->local_interfaces()->at(index);
2021 klass = k;
2022 JVMCIObject type = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
2023 JVMCIENV->put_object_at(interfaces, index, type);
2024 }
2025 return JVMCIENV->get_jobject(interfaces);
2026 C2V_END
2027
2028 C2V_VMENTRY_NULL(jobject, getComponentType, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2029 Klass* klass = UNPACK_PAIR(Klass, klass);
2030 if (klass == nullptr) {
2031 JVMCI_THROW_NULL(NullPointerException);
2032 }
2033
2034 if (!klass->is_array_klass()) {
2035 return nullptr;
2036 }
2037 oop mirror = klass->java_mirror();
2038 oop component_mirror = java_lang_Class::component_mirror(mirror);
2039 if (component_mirror == nullptr) {
2040 JVMCI_THROW_MSG_NULL(NullPointerException,
2041 err_msg("Component mirror for array class %s is null", klass->external_name()))
2042 }
2043
2044 Klass* component_klass = java_lang_Class::as_Klass(component_mirror);
2045 if (component_klass != nullptr) {
2046 JVMCIKlassHandle klass_handle(THREAD, component_klass);
2047 JVMCIObject result = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL);
2048 return JVMCIENV->get_jobject(result);
2049 }
2050 BasicType type = java_lang_Class::primitive_type(component_mirror);
2051 JVMCIObject result = JVMCIENV->get_jvmci_primitive_type(type, JVMCI_CHECK_NULL);
2052 return JVMCIENV->get_jobject(result);
2053 C2V_END
2054
2055 C2V_VMENTRY(void, ensureInitialized, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2056 Klass* klass = UNPACK_PAIR(Klass, klass);
2057 if (klass == nullptr) {
2058 JVMCI_THROW(NullPointerException);
2059 }
2060 if (klass->should_be_initialized()) {
2061 InstanceKlass* k = InstanceKlass::cast(klass);
2062 k->initialize(CHECK);
2063 }
2064 C2V_END
2065
2066 C2V_VMENTRY(void, ensureLinked, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2067 CompilerThreadCanCallJava canCallJava(thread, true); // Linking requires Java calls
2068 Klass* klass = UNPACK_PAIR(Klass, klass);
2069 if (klass == nullptr) {
2070 JVMCI_THROW(NullPointerException);
2071 }
2072 if (klass->is_instance_klass()) {
2073 InstanceKlass* k = InstanceKlass::cast(klass);
2074 k->link_class(CHECK);
2075 }
2076 C2V_END
2077
2078 C2V_VMENTRY_0(jint, interpreterFrameSize, (JNIEnv* env, jobject, jobject bytecode_frame_handle))
2079 if (bytecode_frame_handle == nullptr) {
2080 JVMCI_THROW_0(NullPointerException);
2081 }
2082
2083 JVMCIObject top_bytecode_frame = JVMCIENV->wrap(bytecode_frame_handle);
2084 JVMCIObject bytecode_frame = top_bytecode_frame;
2085 int size = 0;
2086 int callee_parameters = 0;
2087 int callee_locals = 0;
2088 Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame));
2089 int extra_args = method->max_stack() - JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame);
2090
2091 while (bytecode_frame.is_non_null()) {
2092 int locks = JVMCIENV->get_BytecodeFrame_numLocks(bytecode_frame);
2093 int temps = JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame);
2094 bool is_top_frame = (JVMCIENV->equals(bytecode_frame, top_bytecode_frame));
2095 Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame));
2096
2097 int frame_size = BytesPerWord * Interpreter::size_activation(method->max_stack(),
2098 temps + callee_parameters,
2099 extra_args,
2100 locks,
2101 callee_parameters,
2102 callee_locals,
2103 is_top_frame);
2104 size += frame_size;
2105
2106 callee_parameters = method->size_of_parameters();
2107 callee_locals = method->max_locals();
2108 extra_args = 0;
2109 bytecode_frame = JVMCIENV->get_BytecodePosition_caller(bytecode_frame);
2110 }
2111 return size + Deoptimization::last_frame_adjust(0, callee_locals) * BytesPerWord;
2112 C2V_END
2113
2114 C2V_VMENTRY(void, compileToBytecode, (JNIEnv* env, jobject, jobject lambda_form_handle))
2115 Handle lambda_form = JVMCIENV->asConstant(JVMCIENV->wrap(lambda_form_handle), JVMCI_CHECK);
2116 if (lambda_form->is_a(vmClasses::LambdaForm_klass())) {
2117 TempNewSymbol compileToBytecode = SymbolTable::new_symbol("compileToBytecode");
2118 JavaValue result(T_VOID);
2119 JavaCalls::call_special(&result, lambda_form, vmClasses::LambdaForm_klass(), compileToBytecode, vmSymbols::void_method_signature(), CHECK);
2120 } else {
2121 JVMCI_THROW_MSG(IllegalArgumentException,
2122 err_msg("Unexpected type: %s", lambda_form->klass()->external_name()))
2123 }
2124 C2V_END
2125
2126 C2V_VMENTRY_0(jint, getIdentityHashCode, (JNIEnv* env, jobject, jobject object))
2127 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
2128 return obj->identity_hash();
2129 C2V_END
2130
2131 C2V_VMENTRY_0(jboolean, isInternedString, (JNIEnv* env, jobject, jobject object))
2132 Handle str = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
2133 if (!java_lang_String::is_instance(str())) {
2134 return false;
2135 }
2136 int len;
2137 jchar* name = java_lang_String::as_unicode_string(str(), len, CHECK_false);
2138 return (StringTable::lookup(name, len) != nullptr);
2139 C2V_END
2140
2141
2142 C2V_VMENTRY_NULL(jobject, unboxPrimitive, (JNIEnv* env, jobject, jobject object))
2143 if (object == nullptr) {
2144 JVMCI_THROW_NULL(NullPointerException);
2145 }
2146 Handle box = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2147 BasicType type = java_lang_boxing_object::basic_type(box());
2148 jvalue result;
2149 if (java_lang_boxing_object::get_value(box(), &result) == T_ILLEGAL) {
2150 return nullptr;
2151 }
2152 JVMCIObject boxResult = JVMCIENV->create_box(type, &result, JVMCI_CHECK_NULL);
2153 return JVMCIENV->get_jobject(boxResult);
2154 C2V_END
2155
2156 C2V_VMENTRY_NULL(jobject, boxPrimitive, (JNIEnv* env, jobject, jobject object))
2157 if (object == nullptr) {
2158 JVMCI_THROW_NULL(NullPointerException);
2159 }
2160 JVMCIObject box = JVMCIENV->wrap(object);
2161 BasicType type = JVMCIENV->get_box_type(box);
2162 if (type == T_ILLEGAL) {
2163 return nullptr;
2164 }
2165 jvalue value = JVMCIENV->get_boxed_value(type, box);
2166 JavaValue box_result(T_OBJECT);
2167 JavaCallArguments jargs;
2168 Klass* box_klass = nullptr;
2169 Symbol* box_signature = nullptr;
2170 #define BOX_CASE(bt, v, argtype, name) \
2171 case bt: \
2172 jargs.push_##argtype(value.v); \
2173 box_klass = vmClasses::name##_klass(); \
2174 box_signature = vmSymbols::name##_valueOf_signature(); \
2175 break
2176
2177 switch (type) {
2178 BOX_CASE(T_BOOLEAN, z, int, Boolean);
2179 BOX_CASE(T_BYTE, b, int, Byte);
2180 BOX_CASE(T_CHAR, c, int, Character);
2181 BOX_CASE(T_SHORT, s, int, Short);
2182 BOX_CASE(T_INT, i, int, Integer);
2183 BOX_CASE(T_LONG, j, long, Long);
2184 BOX_CASE(T_FLOAT, f, float, Float);
2185 BOX_CASE(T_DOUBLE, d, double, Double);
2186 default:
2187 ShouldNotReachHere();
2188 }
2189 #undef BOX_CASE
2190
2191 JavaCalls::call_static(&box_result,
2192 box_klass,
2193 vmSymbols::valueOf_name(),
2194 box_signature, &jargs, CHECK_NULL);
2195 oop hotspot_box = box_result.get_oop();
2196 JVMCIObject result = JVMCIENV->get_object_constant(hotspot_box, false);
2197 return JVMCIENV->get_jobject(result);
2198 C2V_END
2199
2200 C2V_VMENTRY_NULL(jobjectArray, getDeclaredConstructors, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2201 Klass* klass = UNPACK_PAIR(Klass, klass);
2202 if (klass == nullptr) {
2203 JVMCI_THROW_NULL(NullPointerException);
2204 }
2205 if (!klass->is_instance_klass()) {
2206 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
2207 return JVMCIENV->get_jobjectArray(methods);
2208 }
2209
2210 InstanceKlass* iklass = InstanceKlass::cast(klass);
2211 GrowableArray<Method*> constructors_array;
2212 for (int i = 0; i < iklass->methods()->length(); i++) {
2213 Method* m = iklass->methods()->at(i);
2214 if (m->is_object_constructor()) {
2215 constructors_array.append(m);
2216 }
2217 }
2218 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(constructors_array.length(), JVMCI_CHECK_NULL);
2219 for (int i = 0; i < constructors_array.length(); i++) {
2220 methodHandle ctor(THREAD, constructors_array.at(i));
2221 JVMCIObject method = JVMCIENV->get_jvmci_method(ctor, JVMCI_CHECK_NULL);
2222 JVMCIENV->put_object_at(methods, i, method);
2223 }
2224 return JVMCIENV->get_jobjectArray(methods);
2225 C2V_END
2226
2227 C2V_VMENTRY_NULL(jobjectArray, getDeclaredMethods, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2228 Klass* klass = UNPACK_PAIR(Klass, klass);
2229 if (klass == nullptr) {
2230 JVMCI_THROW_NULL(NullPointerException);
2231 }
2232 if (!klass->is_instance_klass()) {
2233 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
2234 return JVMCIENV->get_jobjectArray(methods);
2235 }
2236
2237 InstanceKlass* iklass = InstanceKlass::cast(klass);
2238 GrowableArray<Method*> methods_array;
2239 for (int i = 0; i < iklass->methods()->length(); i++) {
2240 Method* m = iklass->methods()->at(i);
2241 if (!(m->is_object_constructor() || m->is_class_initializer()) && !m->is_overpass()) {
2242 methods_array.append(m);
2243 }
2244 }
2245 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(methods_array.length(), JVMCI_CHECK_NULL);
2246 for (int i = 0; i < methods_array.length(); i++) {
2247 methodHandle mh(THREAD, methods_array.at(i));
2248 JVMCIObject method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
2249 JVMCIENV->put_object_at(methods, i, method);
2250 }
2251 return JVMCIENV->get_jobjectArray(methods);
2252 C2V_END
2253
2254 C2V_VMENTRY_NULL(jobjectArray, getAllMethods, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2255 Klass* klass = UNPACK_PAIR(Klass, klass);
2256 if (klass == nullptr) {
2257 JVMCI_THROW_NULL(NullPointerException);
2258 }
2259 if (!klass->is_instance_klass()) {
2260 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL);
2261 return JVMCIENV->get_jobjectArray(methods);
2262 }
2263
2264 InstanceKlass* iklass = InstanceKlass::cast(klass);
2265 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(iklass->methods()->length(), JVMCI_CHECK_NULL);
2266 for (int i = 0; i < iklass->methods()->length(); i++) {
2267 methodHandle mh(THREAD, iklass->methods()->at(i));
2268 JVMCIObject method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL);
2269 JVMCIENV->put_object_at(methods, i, method);
2270 }
2271 return JVMCIENV->get_jobjectArray(methods);
2272 C2V_END
2273
2274 C2V_VMENTRY_NULL(jobjectArray, getDeclaredFieldsInfo, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2275 Klass* klass = UNPACK_PAIR(Klass, klass);
2276 if (klass == nullptr) {
2277 JVMCI_THROW_NULL(NullPointerException);
2278 }
2279 if (!klass->is_instance_klass()) {
2280 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "not an InstanceKlass");
2281 }
2282 InstanceKlass* iklass = InstanceKlass::cast(klass);
2283 int java_fields, injected_fields;
2284 GrowableArray<FieldInfo>* fields = FieldInfoStream::create_FieldInfoArray(iklass->fieldinfo_stream(), &java_fields, &injected_fields);
2285 JVMCIObjectArray array = JVMCIENV->new_FieldInfo_array(fields->length(), JVMCI_CHECK_NULL);
2286 for (int i = 0; i < fields->length(); i++) {
2287 JVMCIObject field_info = JVMCIENV->new_FieldInfo(fields->adr_at(i), JVMCI_CHECK_NULL);
2288 JVMCIENV->put_object_at(array, i, field_info);
2289 }
2290 return array.as_jobject();
2291 C2V_END
2292
2293 static jobject read_field_value(Handle obj, long displacement, jchar type_char, bool is_static, Thread* THREAD, JVMCIEnv* JVMCIENV) {
2294
2295 BasicType basic_type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_NULL);
2296 int basic_type_elemsize = type2aelembytes(basic_type);
2297 if (displacement < 0 || ((size_t) displacement + basic_type_elemsize > HeapWordSize * obj->size())) {
2298 // Reading outside of the object bounds
2299 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading outside object bounds");
2300 }
2301
2302 // Perform basic sanity checks on the read. Primitive reads are permitted to read outside the
2303 // bounds of their fields but object reads must map exactly onto the underlying oop slot.
2304 bool aligned = (displacement % basic_type_elemsize) == 0;
2305 if (!aligned) {
2306 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "read is unaligned");
2307 }
2308 if (obj->is_array()) {
2309 // Disallow reading after the last element of an array
2310 size_t array_length = arrayOop(obj())->length();
2311 int lh = obj->klass()->layout_helper();
2312 size_t size_in_bytes = array_length << Klass::layout_helper_log2_element_size(lh);
2313 size_in_bytes += Klass::layout_helper_header_size(lh);
2314 if ((size_t) displacement + basic_type_elemsize > size_in_bytes) {
2315 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading after last array element");
2316 }
2317 }
2318 if (basic_type == T_OBJECT) {
2319 if (obj->is_objArray()) {
2320 if (displacement < arrayOopDesc::base_offset_in_bytes(T_OBJECT)) {
2321 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header");
2322 }
2323 if (((displacement - arrayOopDesc::base_offset_in_bytes(T_OBJECT)) % heapOopSize) != 0) {
2324 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "misaligned object read from array");
2325 }
2326 } else if (obj->is_instance()) {
2327 InstanceKlass* klass = InstanceKlass::cast(is_static ? java_lang_Class::as_Klass(obj()) : obj->klass());
2328 fieldDescriptor fd;
2329 if (!klass->find_field_from_offset(displacement, is_static, &fd)) {
2330 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Can't find field at displacement %d in object of type %s", (int) displacement, klass->external_name()));
2331 }
2332 if (fd.field_type() != T_OBJECT && fd.field_type() != T_ARRAY) {
2333 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Field at displacement %d in object of type %s is %s but expected %s", (int) displacement,
2334 klass->external_name(), type2name(fd.field_type()), type2name(basic_type)));
2335 }
2336 } else if (obj->is_typeArray()) {
2337 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Can't read objects from primitive array");
2338 } else {
2339 ShouldNotReachHere();
2340 }
2341 } else {
2342 if (obj->is_objArray()) {
2343 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Reading primitive from object array");
2344 } else if (obj->is_typeArray()) {
2345 if (displacement < arrayOopDesc::base_offset_in_bytes(ArrayKlass::cast(obj->klass())->element_type())) {
2346 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header");
2347 }
2348 }
2349 }
2350
2351 jlong value = 0;
2352
2353 // Treat all reads as volatile for simplicity as this function can be used
2354 // both for reading Java fields declared as volatile as well as for constant
2355 // folding Unsafe.get* methods with volatile semantics.
2356
2357 switch (basic_type) {
2358 case T_BOOLEAN: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jboolean>(displacement)); break;
2359 case T_BYTE: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jbyte>(displacement)); break;
2360 case T_SHORT: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jshort>(displacement)); break;
2361 case T_CHAR: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jchar>(displacement)); break;
2362 case T_FLOAT:
2363 case T_INT: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jint>(displacement)); break;
2364 case T_DOUBLE:
2365 case T_LONG: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jlong>(displacement)); break;
2366
2367 case T_OBJECT: {
2368 if (displacement == java_lang_Class::component_mirror_offset() && java_lang_Class::is_instance(obj()) &&
2369 (java_lang_Class::as_Klass(obj()) == nullptr || !java_lang_Class::as_Klass(obj())->is_array_klass())) {
2370 // Class.componentType for non-array classes can transiently contain an int[] that's
2371 // used for locking so always return null to mimic Class.getComponentType()
2372 return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
2373 }
2374
2375 // Perform the read including any barriers required to make the reference strongly reachable
2376 // since it will be wrapped as a JavaConstant.
2377 oop value = obj->obj_field_access<MO_SEQ_CST | ON_UNKNOWN_OOP_REF>(displacement);
2378
2379 if (value == nullptr) {
2380 return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
2381 } else {
2382 if (value != nullptr && !oopDesc::is_oop(value)) {
2383 // Throw an exception to improve debuggability. This check isn't totally reliable because
2384 // is_oop doesn't try to be completety safe but for most invalid values it provides a good
2385 // enough answer. It possible to crash in the is_oop call but that just means the crash happens
2386 // closer to where things went wrong.
2387 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Read bad oop " INTPTR_FORMAT " at offset " JLONG_FORMAT " in object " INTPTR_FORMAT " of type %s",
2388 p2i(value), displacement, p2i(obj()), obj->klass()->external_name()));
2389 }
2390
2391 JVMCIObject result = JVMCIENV->get_object_constant(value);
2392 return JVMCIENV->get_jobject(result);
2393 }
2394 }
2395
2396 default:
2397 ShouldNotReachHere();
2398 }
2399 JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, value, JVMCI_CHECK_NULL);
2400 return JVMCIENV->get_jobject(result);
2401 }
2402
2403 C2V_VMENTRY_NULL(jobject, readStaticFieldValue, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), long displacement, jchar type_char))
2404 Klass* klass = UNPACK_PAIR(Klass, klass);
2405 Handle obj(THREAD, klass->java_mirror());
2406 return read_field_value(obj, displacement, type_char, true, THREAD, JVMCIENV);
2407 C2V_END
2408
2409 C2V_VMENTRY_NULL(jobject, readFieldValue, (JNIEnv* env, jobject, jobject object, ARGUMENT_PAIR(expected_type), long displacement, jchar type_char))
2410 if (object == nullptr) {
2411 JVMCI_THROW_NULL(NullPointerException);
2412 }
2413
2414 // asConstant will throw an NPE if a constant contains null
2415 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2416
2417 Klass* expected_klass = UNPACK_PAIR(Klass, expected_type);
2418 if (expected_klass != nullptr) {
2419 InstanceKlass* expected_iklass = InstanceKlass::cast(expected_klass);
2420 if (!obj->is_a(expected_iklass)) {
2421 // Not of the expected type
2422 return nullptr;
2423 }
2424 }
2425 bool is_static = expected_klass == nullptr && java_lang_Class::is_instance(obj()) && displacement >= InstanceMirrorKlass::offset_of_static_fields();
2426 return read_field_value(obj, displacement, type_char, is_static, THREAD, JVMCIENV);
2427 C2V_END
2428
2429 C2V_VMENTRY_0(jboolean, isInstance, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jobject object))
2430 Klass* klass = UNPACK_PAIR(Klass, klass);
2431 if (object == nullptr || klass == nullptr) {
2432 JVMCI_THROW_0(NullPointerException);
2433 }
2434 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0);
2435 return obj->is_a(klass);
2436 C2V_END
2437
2438 C2V_VMENTRY_0(jboolean, isAssignableFrom, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(subklass)))
2439 Klass* klass = UNPACK_PAIR(Klass, klass);
2440 Klass* subklass = UNPACK_PAIR(Klass, subklass);
2441 if (klass == nullptr || subklass == nullptr) {
2442 JVMCI_THROW_0(NullPointerException);
2443 }
2444 return subklass->is_subtype_of(klass);
2445 C2V_END
2446
2447 C2V_VMENTRY_0(jboolean, isTrustedForIntrinsics, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2448 Klass* klass = UNPACK_PAIR(Klass, klass);
2449 if (klass == nullptr) {
2450 JVMCI_THROW_0(NullPointerException);
2451 }
2452 InstanceKlass* ik = InstanceKlass::cast(klass);
2453 if (ik->class_loader_data()->is_boot_class_loader_data() || ik->class_loader_data()->is_platform_class_loader_data()) {
2454 return true;
2455 }
2456 return false;
2457 C2V_END
2458
2459 C2V_VMENTRY_NULL(jobject, asJavaType, (JNIEnv* env, jobject, jobject object))
2460 if (object == nullptr) {
2461 JVMCI_THROW_NULL(NullPointerException);
2462 }
2463 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2464 if (java_lang_Class::is_instance(obj())) {
2465 if (java_lang_Class::is_primitive(obj())) {
2466 JVMCIObject type = JVMCIENV->get_jvmci_primitive_type(java_lang_Class::primitive_type(obj()), JVMCI_CHECK_NULL);
2467 return JVMCIENV->get_jobject(type);
2468 }
2469 Klass* klass = java_lang_Class::as_Klass(obj());
2470 JVMCIKlassHandle klass_handle(THREAD);
2471 klass_handle = klass;
2472 JVMCIObject type = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL);
2473 return JVMCIENV->get_jobject(type);
2474 }
2475 return nullptr;
2476 C2V_END
2477
2478
2479 C2V_VMENTRY_NULL(jobject, asString, (JNIEnv* env, jobject, jobject object))
2480 if (object == nullptr) {
2481 JVMCI_THROW_NULL(NullPointerException);
2482 }
2483 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL);
2484 const char* str = java_lang_String::as_utf8_string(obj());
2485 JVMCIObject result = JVMCIENV->create_string(str, JVMCI_CHECK_NULL);
2486 return JVMCIENV->get_jobject(result);
2487 C2V_END
2488
2489
2490 C2V_VMENTRY_0(jboolean, equals, (JNIEnv* env, jobject, jobject x, jlong xHandle, jobject y, jlong yHandle))
2491 if (x == nullptr || y == nullptr) {
2492 JVMCI_THROW_0(NullPointerException);
2493 }
2494 return JVMCIENV->resolve_oop_handle(xHandle) == JVMCIENV->resolve_oop_handle(yHandle);
2495 C2V_END
2496
2497 C2V_VMENTRY_NULL(jobject, getJavaMirror, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
2498 Klass* klass = UNPACK_PAIR(Klass, klass);
2499 if (klass == nullptr) {
2500 JVMCI_THROW_NULL(NullPointerException);
2501 }
2502 Handle mirror(THREAD, klass->java_mirror());
2503 JVMCIObject result = JVMCIENV->get_object_constant(mirror());
2504 return JVMCIENV->get_jobject(result);
2505 C2V_END
2506
2507
2508 C2V_VMENTRY_0(jint, getArrayLength, (JNIEnv* env, jobject, jobject x))
2509 if (x == nullptr) {
2510 JVMCI_THROW_0(NullPointerException);
2511 }
2512 Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_0);
2513 if (xobj->klass()->is_array_klass()) {
2514 return arrayOop(xobj())->length();
2515 }
2516 return -1;
2517 C2V_END
2518
2519
2520 C2V_VMENTRY_NULL(jobject, readArrayElement, (JNIEnv* env, jobject, jobject x, int index))
2521 if (x == nullptr) {
2522 JVMCI_THROW_NULL(NullPointerException);
2523 }
2524 Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_NULL);
2525 if (xobj->klass()->is_array_klass()) {
2526 arrayOop array = arrayOop(xobj());
2527 BasicType element_type = ArrayKlass::cast(array->klass())->element_type();
2528 if (index < 0 || index >= array->length()) {
2529 return nullptr;
2530 }
2531 JVMCIObject result;
2532
2533 if (element_type == T_OBJECT) {
2534 oop element = objArrayOop(xobj())->obj_at(index, CHECK_NULL);
2535 result = JVMCIENV->get_object_constant(element);
2536 if (result.is_null()) {
2537 result = JVMCIENV->get_JavaConstant_NULL_POINTER();
2538 }
2539 } else {
2540 jvalue value;
2541 switch (element_type) {
2542 case T_DOUBLE: value.d = typeArrayOop(xobj())->double_at(index); break;
2543 case T_FLOAT: value.f = typeArrayOop(xobj())->float_at(index); break;
2544 case T_LONG: value.j = typeArrayOop(xobj())->long_at(index); break;
2545 case T_INT: value.i = typeArrayOop(xobj())->int_at(index); break;
2546 case T_SHORT: value.s = typeArrayOop(xobj())->short_at(index); break;
2547 case T_CHAR: value.c = typeArrayOop(xobj())->char_at(index); break;
2548 case T_BYTE: value.b = typeArrayOop(xobj())->byte_at(index); break;
2549 case T_BOOLEAN: value.z = typeArrayOop(xobj())->byte_at(index) & 1; break;
2550 default: ShouldNotReachHere();
2551 }
2552 result = JVMCIENV->create_box(element_type, &value, JVMCI_CHECK_NULL);
2553 }
2554 assert(!result.is_null(), "must have a value");
2555 return JVMCIENV->get_jobject(result);
2556 }
2557 return nullptr;;
2558 C2V_END
2559
2560
2561 C2V_VMENTRY_0(jint, arrayBaseOffset, (JNIEnv* env, jobject, jchar type_char))
2562 BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
2563 return arrayOopDesc::base_offset_in_bytes(type);
2564 C2V_END
2565
2566 C2V_VMENTRY_0(jint, arrayIndexScale, (JNIEnv* env, jobject, jchar type_char))
2567 BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
2568 return type2aelembytes(type);
2569 C2V_END
2570
2571 C2V_VMENTRY(void, clearOopHandle, (JNIEnv* env, jobject, jlong oop_handle))
2572 if (oop_handle == 0L) {
2573 JVMCI_THROW(NullPointerException);
2574 }
2575 // Assert before nulling out, for better debugging.
2576 assert(JVMCIRuntime::is_oop_handle(oop_handle), "precondition");
2577 oop* oop_ptr = (oop*) oop_handle;
2578 NativeAccess<>::oop_store(oop_ptr, (oop) nullptr);
2579 C2V_END
2580
2581 C2V_VMENTRY(void, releaseClearedOopHandles, (JNIEnv* env, jobject))
2582 JVMCIENV->runtime()->release_cleared_oop_handles();
2583 C2V_END
2584
2585 static void requireJVMCINativeLibrary(JVMCI_TRAPS) {
2586 if (!UseJVMCINativeLibrary) {
2587 JVMCI_THROW_MSG(UnsupportedOperationException, "JVMCI shared library is not enabled (requires -XX:+UseJVMCINativeLibrary)");
2588 }
2589 }
2590
2591 C2V_VMENTRY_NULL(jlongArray, registerNativeMethods, (JNIEnv* env, jobject, jclass mirror))
2592 requireJVMCINativeLibrary(JVMCI_CHECK_NULL);
2593 requireInHotSpot("registerNativeMethods", JVMCI_CHECK_NULL);
2594 char* sl_path;
2595 void* sl_handle;
2596 JVMCIRuntime* runtime;
2597 {
2598 // Ensure the JVMCI shared library runtime is initialized.
2599 PEER_JVMCIENV_FROM_THREAD(THREAD, false);
2600 PEER_JVMCIENV->check_init(JVMCI_CHECK_NULL);
2601
2602 HandleMark hm(THREAD);
2603 runtime = JVMCI::compiler_runtime(thread);
2604 if (PEER_JVMCIENV->has_pending_exception()) {
2605 PEER_JVMCIENV->describe_pending_exception(tty);
2606 }
2607 sl_handle = JVMCI::get_shared_library(sl_path, false);
2608 if (sl_handle == nullptr) {
2609 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Error initializing JVMCI runtime %d", runtime->id()));
2610 }
2611 }
2612
2613 if (mirror == nullptr) {
2614 JVMCI_THROW_NULL(NullPointerException);
2615 }
2616 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2617 if (klass == nullptr || !klass->is_instance_klass()) {
2618 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "clazz is for primitive type");
2619 }
2620
2621 InstanceKlass* iklass = InstanceKlass::cast(klass);
2622 for (int i = 0; i < iklass->methods()->length(); i++) {
2623 methodHandle method(THREAD, iklass->methods()->at(i));
2624 if (method->is_native()) {
2625
2626 // Compute argument size
2627 int args_size = 1 // JNIEnv
2628 + (method->is_static() ? 1 : 0) // class for static methods
2629 + method->size_of_parameters(); // actual parameters
2630
2631 // 1) Try JNI short style
2632 stringStream st;
2633 char* pure_name = NativeLookup::pure_jni_name(method);
2634 guarantee(pure_name != nullptr, "Illegal native method name encountered");
2635 st.print_raw(pure_name);
2636 char* jni_name = st.as_string();
2637
2638 address entry = (address) os::dll_lookup(sl_handle, jni_name);
2639 if (entry == nullptr) {
2640 // 2) Try JNI long style
2641 st.reset();
2642 char* long_name = NativeLookup::long_jni_name(method);
2643 guarantee(long_name != nullptr, "Illegal native method name encountered");
2644 st.print_raw(pure_name);
2645 st.print_raw(long_name);
2646 char* jni_long_name = st.as_string();
2647 entry = (address) os::dll_lookup(sl_handle, jni_long_name);
2648 if (entry == nullptr) {
2649 JVMCI_THROW_MSG_NULL(UnsatisfiedLinkError, err_msg("%s [neither %s nor %s exist in %s]",
2650 method->name_and_sig_as_C_string(),
2651 jni_name, jni_long_name, sl_path));
2652 }
2653 }
2654
2655 if (method->has_native_function() && entry != method->native_function()) {
2656 JVMCI_THROW_MSG_NULL(UnsatisfiedLinkError, err_msg("%s [cannot re-link from " PTR_FORMAT " to " PTR_FORMAT "]",
2657 method->name_and_sig_as_C_string(), p2i(method->native_function()), p2i(entry)));
2658 }
2659 method->set_native_function(entry, Method::native_bind_event_is_interesting);
2660 log_debug(jni, resolve)("[Dynamic-linking native method %s.%s ... JNI] @ " PTR_FORMAT,
2661 method->method_holder()->external_name(),
2662 method->name()->as_C_string(),
2663 p2i((void*) entry));
2664 }
2665 }
2666
2667 typeArrayOop info_oop = oopFactory::new_longArray(4, CHECK_NULL);
2668 jlongArray info = (jlongArray) JNIHandles::make_local(THREAD, info_oop);
2669 runtime->init_JavaVM_info(info, JVMCI_CHECK_NULL);
2670 return info;
2671 C2V_END
2672
2673 C2V_VMENTRY_PREFIX(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject c2vm))
2674 if (thread == nullptr || thread->libjvmci_runtime() == nullptr) {
2675 // Called from unattached JVMCI shared library thread
2676 return false;
2677 }
2678 if (thread->jni_environment() == env) {
2679 C2V_BLOCK(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject))
2680 JVMCITraceMark jtm("isCurrentThreadAttached");
2681 requireJVMCINativeLibrary(JVMCI_CHECK_0);
2682 JVMCIRuntime* runtime = thread->libjvmci_runtime();
2683 if (runtime == nullptr || !runtime->has_shared_library_javavm()) {
2684 JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in isCurrentThreadAttached");
2685 }
2686 JNIEnv* peerEnv;
2687 return runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) == JNI_OK;
2688 }
2689 return true;
2690 C2V_END
2691
2692 C2V_VMENTRY_PREFIX(jlong, getCurrentJavaThread, (JNIEnv* env, jobject c2vm))
2693 if (thread == nullptr) {
2694 // Called from unattached JVMCI shared library thread
2695 return 0L;
2696 }
2697 return (jlong) p2i(thread);
2698 C2V_END
2699
2700 // Attaches a thread started in a JVMCI shared library to a JavaThread and JVMCI runtime.
2701 static void attachSharedLibraryThread(JNIEnv* env, jbyteArray name, jboolean as_daemon) {
2702 JavaVM* javaVM = nullptr;
2703 jint res = env->GetJavaVM(&javaVM);
2704 if (res != JNI_OK) {
2705 JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Error getting shared library JavaVM from shared library JNIEnv: %d", res));
2706 }
2707 extern struct JavaVM_ main_vm;
2708 JNIEnv* hotspotEnv;
2709
2710 int name_len = env->GetArrayLength(name);
2711 char name_buf[64]; // Cannot use Resource heap as it requires a current thread
2712 int to_copy = MIN2(name_len, (int) sizeof(name_buf) - 1);
2713 env->GetByteArrayRegion(name, 0, to_copy, (jbyte*) name_buf);
2714 name_buf[to_copy] = '\0';
2715 JavaVMAttachArgs attach_args;
2716 attach_args.version = JNI_VERSION_1_2;
2717 attach_args.name = name_buf;
2718 attach_args.group = nullptr;
2719 res = as_daemon ? main_vm.AttachCurrentThreadAsDaemon((void**)&hotspotEnv, &attach_args) :
2720 main_vm.AttachCurrentThread((void**)&hotspotEnv, &attach_args);
2721 if (res != JNI_OK) {
2722 JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Trying to attach thread returned %d", res));
2723 }
2724 JavaThread* thread = JavaThread::thread_from_jni_environment(hotspotEnv);
2725 const char* attach_error;
2726 {
2727 // Transition to VM
2728 JVMCI_VM_ENTRY_MARK
2729 attach_error = JVMCIRuntime::attach_shared_library_thread(thread, javaVM);
2730 // Transition back to Native
2731 }
2732 if (attach_error != nullptr) {
2733 JNI_THROW("attachCurrentThread", InternalError, attach_error);
2734 }
2735 }
2736
2737 C2V_VMENTRY_PREFIX(jboolean, attachCurrentThread, (JNIEnv* env, jobject c2vm, jbyteArray name, jboolean as_daemon, jlongArray javaVM_info))
2738 if (thread == nullptr) {
2739 attachSharedLibraryThread(env, name, as_daemon);
2740 return true;
2741 }
2742 if (thread->jni_environment() == env) {
2743 // Called from HotSpot
2744 C2V_BLOCK(jboolean, attachCurrentThread, (JNIEnv* env, jobject, jboolean))
2745 JVMCITraceMark jtm("attachCurrentThread");
2746 requireJVMCINativeLibrary(JVMCI_CHECK_0);
2747
2748 JVMCIRuntime* runtime = JVMCI::compiler_runtime(thread);
2749 JNIEnv* peerJNIEnv;
2750 if (runtime->has_shared_library_javavm()) {
2751 if (runtime->GetEnv(thread, (void**)&peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) {
2752 // Already attached
2753 runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0);
2754 return false;
2755 }
2756 }
2757
2758 {
2759 // Ensure the JVMCI shared library runtime is initialized.
2760 PEER_JVMCIENV_FROM_THREAD(THREAD, false);
2761 PEER_JVMCIENV->check_init(JVMCI_CHECK_0);
2762
2763 HandleMark hm(thread);
2764 JVMCIObject receiver = runtime->get_HotSpotJVMCIRuntime(PEER_JVMCIENV);
2765 if (PEER_JVMCIENV->has_pending_exception()) {
2766 PEER_JVMCIENV->describe_pending_exception(tty);
2767 }
2768 char* sl_path;
2769 if (JVMCI::get_shared_library(sl_path, false) == nullptr) {
2770 JVMCI_THROW_MSG_0(InternalError, "Error initializing JVMCI runtime");
2771 }
2772 }
2773
2774 JavaVMAttachArgs attach_args;
2775 attach_args.version = JNI_VERSION_1_2;
2776 attach_args.name = const_cast<char*>(thread->name());
2777 attach_args.group = nullptr;
2778 if (runtime->GetEnv(thread, (void**) &peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) {
2779 return false;
2780 }
2781 jint res = as_daemon ? runtime->AttachCurrentThreadAsDaemon(thread, (void**) &peerJNIEnv, &attach_args) :
2782 runtime->AttachCurrentThread(thread, (void**) &peerJNIEnv, &attach_args);
2783
2784 if (res == JNI_OK) {
2785 guarantee(peerJNIEnv != nullptr, "must be");
2786 runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0);
2787 JVMCI_event_1("attached to JavaVM[" JLONG_FORMAT "] for JVMCI runtime %d", runtime->get_shared_library_javavm_id(), runtime->id());
2788 return true;
2789 }
2790 JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, attach_args.name));
2791 }
2792 // Called from JVMCI shared library
2793 return false;
2794 C2V_END
2795
2796 C2V_VMENTRY_PREFIX(jboolean, detachCurrentThread, (JNIEnv* env, jobject c2vm, jboolean release))
2797 if (thread == nullptr) {
2798 // Called from unattached JVMCI shared library thread
2799 JNI_THROW_("detachCurrentThread", IllegalStateException, "Cannot detach non-attached thread", false);
2800 }
2801 if (thread->jni_environment() == env) {
2802 // Called from HotSpot
2803 C2V_BLOCK(void, detachCurrentThread, (JNIEnv* env, jobject))
2804 JVMCITraceMark jtm("detachCurrentThread");
2805 requireJVMCINativeLibrary(JVMCI_CHECK_0);
2806 requireInHotSpot("detachCurrentThread", JVMCI_CHECK_0);
2807 JVMCIRuntime* runtime = thread->libjvmci_runtime();
2808 if (runtime == nullptr || !runtime->has_shared_library_javavm()) {
2809 JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in detachCurrentThread");
2810 }
2811 JNIEnv* peerEnv;
2812
2813 if (runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) != JNI_OK) {
2814 JVMCI_THROW_MSG_0(IllegalStateException, err_msg("Cannot detach non-attached thread: %s", thread->name()));
2815 }
2816 jint res = runtime->DetachCurrentThread(thread);
2817 if (res != JNI_OK) {
2818 JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, thread->name()));
2819 }
2820 JVMCI_event_1("detached from JavaVM[" JLONG_FORMAT "] for JVMCI runtime %d",
2821 runtime->get_shared_library_javavm_id(), runtime->id());
2822 if (release) {
2823 return runtime->detach_thread(thread, "user thread detach");
2824 }
2825 } else {
2826 // Called from attached JVMCI shared library thread
2827 if (release) {
2828 JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread cannot release JVMCI shared library JavaVM", false);
2829 }
2830 JVMCIRuntime* runtime = thread->libjvmci_runtime();
2831 if (runtime == nullptr) {
2832 JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread should have a JVMCI runtime", false);
2833 }
2834 {
2835 // Transition to VM
2836 C2V_BLOCK(jboolean, detachCurrentThread, (JNIEnv* env, jobject))
2837 // Cannot destroy shared library JavaVM as we're about to return to it.
2838 runtime->detach_thread(thread, "shared library thread detach", false);
2839 JVMCI_event_1("detaching JVMCI shared library thread from HotSpot JavaVM");
2840 // Transition back to Native
2841 }
2842 extern struct JavaVM_ main_vm;
2843 jint res = main_vm.DetachCurrentThread();
2844 if (res != JNI_OK) {
2845 JNI_THROW_("detachCurrentThread", InternalError, "Cannot detach non-attached thread", false);
2846 }
2847 }
2848 return false;
2849 C2V_END
2850
2851 C2V_VMENTRY_0(jlong, translate, (JNIEnv* env, jobject, jobject obj_handle, jboolean callPostTranslation))
2852 requireJVMCINativeLibrary(JVMCI_CHECK_0);
2853 if (obj_handle == nullptr) {
2854 return 0L;
2855 }
2856 PEER_JVMCIENV_FROM_THREAD(THREAD, !JVMCIENV->is_hotspot());
2857 CompilerThreadCanCallJava canCallJava(thread, PEER_JVMCIENV->is_hotspot());
2858 PEER_JVMCIENV->check_init(JVMCI_CHECK_0);
2859
2860 JVMCIEnv* thisEnv = JVMCIENV;
2861 JVMCIObject obj = thisEnv->wrap(obj_handle);
2862 JVMCIObject result;
2863 if (thisEnv->isa_HotSpotResolvedJavaMethodImpl(obj)) {
2864 methodHandle method(THREAD, thisEnv->asMethod(obj));
2865 result = PEER_JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_0);
2866 } else if (thisEnv->isa_HotSpotResolvedObjectTypeImpl(obj)) {
2867 Klass* klass = thisEnv->asKlass(obj);
2868 JVMCIKlassHandle klass_handle(THREAD);
2869 klass_handle = klass;
2870 result = PEER_JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_0);
2871 } else if (thisEnv->isa_HotSpotResolvedPrimitiveType(obj)) {
2872 BasicType type = JVMCIENV->kindToBasicType(JVMCIENV->get_HotSpotResolvedPrimitiveType_kind(obj), JVMCI_CHECK_0);
2873 result = PEER_JVMCIENV->get_jvmci_primitive_type(type, JVMCI_CHECK_0);
2874 } else if (thisEnv->isa_IndirectHotSpotObjectConstantImpl(obj) ||
2875 thisEnv->isa_DirectHotSpotObjectConstantImpl(obj)) {
2876 Handle constant = thisEnv->asConstant(obj, JVMCI_CHECK_0);
2877 result = PEER_JVMCIENV->get_object_constant(constant());
2878 } else if (thisEnv->isa_HotSpotNmethod(obj)) {
2879 if (PEER_JVMCIENV->is_hotspot()) {
2880 JVMCINMethodHandle nmethod_handle(THREAD);
2881 nmethod* nm = JVMCIENV->get_nmethod(obj, nmethod_handle);
2882 if (nm != nullptr) {
2883 JVMCINMethodData* data = nm->jvmci_nmethod_data();
2884 if (data != nullptr) {
2885 // Only the mirror in the HotSpot heap is accessible
2886 // through JVMCINMethodData
2887 oop nmethod_mirror = data->get_nmethod_mirror(nm);
2888 if (nmethod_mirror != nullptr) {
2889 result = HotSpotJVMCI::wrap(nmethod_mirror);
2890 }
2891 }
2892 }
2893 }
2894
2895 if (result.is_null()) {
2896 JVMCIObject methodObject = thisEnv->get_HotSpotNmethod_method(obj);
2897 methodHandle mh(THREAD, thisEnv->asMethod(methodObject));
2898 jboolean isDefault = thisEnv->get_HotSpotNmethod_isDefault(obj);
2899 jboolean profileDeopt = thisEnv->get_HotSpotNmethod_profileDeopt(obj);
2900 jlong compileIdSnapshot = thisEnv->get_HotSpotNmethod_compileIdSnapshot(obj);
2901 JVMCIObject name_string = thisEnv->get_InstalledCode_name(obj);
2902 const char* cstring = name_string.is_null() ? nullptr : thisEnv->as_utf8_string(name_string);
2903 // Create a new HotSpotNmethod instance in the peer runtime
2904 result = PEER_JVMCIENV->new_HotSpotNmethod(mh, cstring, isDefault, profileDeopt, compileIdSnapshot, JVMCI_CHECK_0);
2905 JVMCINMethodHandle nmethod_handle(THREAD);
2906 nmethod* nm = JVMCIENV->get_nmethod(obj, nmethod_handle);
2907 if (result.is_null()) {
2908 // exception occurred (e.g. OOME) creating a new HotSpotNmethod
2909 } else if (nm == nullptr) {
2910 // nmethod must have been unloaded
2911 } else {
2912 // Link the new HotSpotNmethod to the nmethod
2913 PEER_JVMCIENV->initialize_installed_code(result, nm, JVMCI_CHECK_0);
2914 // Only non-default HotSpotNmethod instances in the HotSpot heap are tracked directly by the runtime.
2915 if (!isDefault && PEER_JVMCIENV->is_hotspot()) {
2916 JVMCINMethodData* data = nm->jvmci_nmethod_data();
2917 if (data == nullptr) {
2918 JVMCI_THROW_MSG_0(IllegalArgumentException, "Missing HotSpotNmethod data");
2919 }
2920 if (data->get_nmethod_mirror(nm) != nullptr) {
2921 JVMCI_THROW_MSG_0(IllegalArgumentException, "Cannot overwrite existing HotSpotNmethod mirror for nmethod");
2922 }
2923 oop nmethod_mirror = HotSpotJVMCI::resolve(result);
2924 data->set_nmethod_mirror(nm, nmethod_mirror);
2925 }
2926 }
2927 }
2928 } else {
2929 JVMCI_THROW_MSG_0(IllegalArgumentException,
2930 err_msg("Cannot translate object of type: %s", thisEnv->klass_name(obj)));
2931 }
2932 if (callPostTranslation) {
2933 PEER_JVMCIENV->call_HotSpotJVMCIRuntime_postTranslation(result, JVMCI_CHECK_0);
2934 }
2935 // Propagate any exception that occurred while creating the translated object
2936 if (PEER_JVMCIENV->transfer_pending_exception(thread, thisEnv)) {
2937 return 0L;
2938 }
2939 return (jlong) PEER_JVMCIENV->make_global(result).as_jobject();
2940 C2V_END
2941
2942 C2V_VMENTRY_NULL(jobject, unhand, (JNIEnv* env, jobject, jlong obj_handle))
2943 requireJVMCINativeLibrary(JVMCI_CHECK_NULL);
2944 if (obj_handle == 0L) {
2945 return nullptr;
2946 }
2947 jobject global_handle = (jobject) obj_handle;
2948 JVMCIObject global_handle_obj = JVMCIENV->wrap(global_handle);
2949 jobject result = JVMCIENV->make_local(global_handle_obj).as_jobject();
2950
2951 JVMCIENV->destroy_global(global_handle_obj);
2952 return result;
2953 C2V_END
2954
2955 C2V_VMENTRY(void, updateHotSpotNmethod, (JNIEnv* env, jobject, jobject code_handle))
2956 JVMCIObject code = JVMCIENV->wrap(code_handle);
2957 // Execute this operation for the side effect of updating the InstalledCode state
2958 JVMCINMethodHandle nmethod_handle(THREAD);
2959 JVMCIENV->get_nmethod(code, nmethod_handle);
2960 C2V_END
2961
2962 C2V_VMENTRY_NULL(jbyteArray, getCode, (JNIEnv* env, jobject, jobject code_handle))
2963 JVMCIObject code = JVMCIENV->wrap(code_handle);
2964 CodeBlob* cb = JVMCIENV->get_code_blob(code);
2965 if (cb == nullptr) {
2966 return nullptr;
2967 }
2968 // Make a resource copy of code before the allocation causes a safepoint
2969 int code_size = cb->code_size();
2970 jbyte* code_bytes = NEW_RESOURCE_ARRAY(jbyte, code_size);
2971 memcpy(code_bytes, (jbyte*) cb->code_begin(), code_size);
2972
2973 JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL);
2974 JVMCIENV->copy_bytes_from(code_bytes, result, 0, code_size);
2975 return JVMCIENV->get_jbyteArray(result);
2976 C2V_END
2977
2978 C2V_VMENTRY_NULL(jobject, asReflectionExecutable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
2979 requireInHotSpot("asReflectionExecutable", JVMCI_CHECK_NULL);
2980 methodHandle m(THREAD, UNPACK_PAIR(Method, method));
2981 oop executable;
2982 if (m->is_class_initializer()) {
2983 JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2984 "Cannot create java.lang.reflect.Method for class initializer");
2985 }
2986 else if (m->is_object_constructor()) {
2987 executable = Reflection::new_constructor(m, CHECK_NULL);
2988 } else {
2989 executable = Reflection::new_method(m, false, CHECK_NULL);
2990 }
2991 return JNIHandles::make_local(THREAD, executable);
2992 C2V_END
2993
2994 // Checks that `index` denotes a non-injected field in `klass`
2995 static InstanceKlass* check_field(Klass* klass, jint index, JVMCI_TRAPS) {
2996 if (!klass->is_instance_klass()) {
2997 JVMCI_THROW_MSG_NULL(IllegalArgumentException,
2998 err_msg("Expected non-primitive type, got %s", klass->external_name()));
2999 }
3000 InstanceKlass* iklass = InstanceKlass::cast(klass);
3001 if (index < 0 || index >= iklass->java_fields_count()) {
3002 if (index >= 0 && index < iklass->total_fields_count()) {
3003 fieldDescriptor fd(iklass, index);
3004 if (fd.is_injected()) {
3005 JVMCI_THROW_MSG_NULL(IllegalArgumentException,
3006 err_msg("Cannot get Field for injected %s.%s", klass->external_name(), fd.name()->as_C_string()));
3007 }
3008 }
3009 JVMCI_THROW_MSG_NULL(IllegalArgumentException,
3010 err_msg("Field index %d out of bounds for %s", index, klass->external_name()));
3011 }
3012 return iklass;
3013 }
3014
3015 C2V_VMENTRY_NULL(jobject, asReflectionField, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jint index))
3016 requireInHotSpot("asReflectionField", JVMCI_CHECK_NULL);
3017 Klass* klass = UNPACK_PAIR(Klass, klass);
3018 InstanceKlass* iklass = check_field(klass, index, JVMCI_CHECK_NULL);
3019 fieldDescriptor fd(iklass, index);
3020 oop reflected = Reflection::new_field(&fd, CHECK_NULL);
3021 return JNIHandles::make_local(THREAD, reflected);
3022 C2V_END
3023
3024 static jbyteArray get_encoded_annotation_data(InstanceKlass* holder, AnnotationArray* annotations_array, bool for_class,
3025 jint filter_length, jlong filter_klass_pointers,
3026 JavaThread* THREAD, JVMCI_TRAPS) {
3027 // Get a ConstantPool object for annotation parsing
3028 Handle jcp = reflect_ConstantPool::create(CHECK_NULL);
3029 reflect_ConstantPool::set_cp(jcp(), holder->constants());
3030
3031 // load VMSupport
3032 Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport();
3033 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK_NULL);
3034
3035 InstanceKlass* vm_support = InstanceKlass::cast(k);
3036 if (vm_support->should_be_initialized()) {
3037 vm_support->initialize(CHECK_NULL);
3038 }
3039
3040 typeArrayOop annotations_oop = Annotations::make_java_array(annotations_array, CHECK_NULL);
3041 typeArrayHandle annotations = typeArrayHandle(THREAD, annotations_oop);
3042
3043 InstanceKlass** filter = filter_length == 1 ?
3044 (InstanceKlass**) &filter_klass_pointers:
3045 (InstanceKlass**) filter_klass_pointers;
3046 objArrayOop filter_oop = oopFactory::new_objArray(vmClasses::Class_klass(), filter_length, CHECK_NULL);
3047 objArrayHandle filter_classes(THREAD, filter_oop);
3048 for (int i = 0; i < filter_length; i++) {
3049 filter_classes->obj_at_put(i, filter[i]->java_mirror());
3050 }
3051
3052 // invoke VMSupport.encodeAnnotations
3053 JavaValue result(T_OBJECT);
3054 JavaCallArguments args;
3055 args.push_oop(annotations);
3056 args.push_oop(Handle(THREAD, holder->java_mirror()));
3057 args.push_oop(jcp);
3058 args.push_int(for_class);
3059 args.push_oop(filter_classes);
3060 Symbol* signature = vmSymbols::encodeAnnotations_signature();
3061 JavaCalls::call_static(&result,
3062 vm_support,
3063 vmSymbols::encodeAnnotations_name(),
3064 signature,
3065 &args,
3066 CHECK_NULL);
3067
3068 oop res = result.get_oop();
3069 if (JVMCIENV->is_hotspot()) {
3070 return (jbyteArray) JNIHandles::make_local(THREAD, res);
3071 }
3072
3073 typeArrayOop ba = typeArrayOop(res);
3074 int ba_len = ba->length();
3075 jbyte* ba_buf = NEW_RESOURCE_ARRAY_IN_THREAD_RETURN_NULL(THREAD, jbyte, ba_len);
3076 if (ba_buf == nullptr) {
3077 JVMCI_THROW_MSG_NULL(InternalError,
3078 err_msg("could not allocate %d bytes", ba_len));
3079
3080 }
3081 memcpy(ba_buf, ba->byte_at_addr(0), ba_len);
3082 JVMCIPrimitiveArray ba_dest = JVMCIENV->new_byteArray(ba_len, JVMCI_CHECK_NULL);
3083 JVMCIENV->copy_bytes_from(ba_buf, ba_dest, 0, ba_len);
3084 return JVMCIENV->get_jbyteArray(ba_dest);
3085 }
3086
3087 C2V_VMENTRY_NULL(jbyteArray, getEncodedClassAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass),
3088 jobject filter, jint filter_length, jlong filter_klass_pointers))
3089 CompilerThreadCanCallJava canCallJava(thread, true); // Requires Java support
3090 InstanceKlass* holder = InstanceKlass::cast(UNPACK_PAIR(Klass, klass));
3091 return get_encoded_annotation_data(holder, holder->class_annotations(), true, filter_length, filter_klass_pointers, THREAD, JVMCIENV);
3092 C2V_END
3093
3094 C2V_VMENTRY_NULL(jbyteArray, getEncodedExecutableAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(method),
3095 jobject filter, jint filter_length, jlong filter_klass_pointers))
3096 CompilerThreadCanCallJava canCallJava(thread, true); // Requires Java support
3097 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
3098 return get_encoded_annotation_data(method->method_holder(), method->annotations(), false, filter_length, filter_klass_pointers, THREAD, JVMCIENV);
3099 C2V_END
3100
3101 C2V_VMENTRY_NULL(jbyteArray, getEncodedFieldAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jint index,
3102 jobject filter, jint filter_length, jlong filter_klass_pointers))
3103 CompilerThreadCanCallJava canCallJava(thread, true); // Requires Java support
3104 InstanceKlass* holder = check_field(InstanceKlass::cast(UNPACK_PAIR(Klass, klass)), index, JVMCI_CHECK_NULL);
3105 fieldDescriptor fd(holder, index);
3106 return get_encoded_annotation_data(holder, fd.annotations(), false, filter_length, filter_klass_pointers, THREAD, JVMCIENV);
3107 C2V_END
3108
3109 C2V_VMENTRY_NULL(jobjectArray, getFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address, jobjectArray current))
3110 FailedSpeculation* head = *((FailedSpeculation**)(address) failed_speculations_address);
3111 int result_length = 0;
3112 for (FailedSpeculation* fs = head; fs != nullptr; fs = fs->next()) {
3113 result_length++;
3114 }
3115 int current_length = 0;
3116 JVMCIObjectArray current_array = nullptr;
3117 if (current != nullptr) {
3118 current_array = JVMCIENV->wrap(current);
3119 current_length = JVMCIENV->get_length(current_array);
3120 if (current_length == result_length) {
3121 // No new failures
3122 return current;
3123 }
3124 }
3125 JVMCIObjectArray result = JVMCIENV->new_byte_array_array(result_length, JVMCI_CHECK_NULL);
3126 int result_index = 0;
3127 for (FailedSpeculation* fs = head; result_index < result_length; fs = fs->next()) {
3128 assert(fs != nullptr, "npe");
3129 JVMCIPrimitiveArray entry;
3130 if (result_index < current_length) {
3131 entry = (JVMCIPrimitiveArray) JVMCIENV->get_object_at(current_array, result_index, JVMCI_CHECK_NULL);
3132 } else {
3133 entry = JVMCIENV->new_byteArray(fs->data_len(), JVMCI_CHECK_NULL);
3134 JVMCIENV->copy_bytes_from((jbyte*) fs->data(), entry, 0, fs->data_len());
3135 }
3136 JVMCIENV->put_object_at(result, result_index++, entry);
3137 }
3138 return JVMCIENV->get_jobjectArray(result);
3139 C2V_END
3140
3141 C2V_VMENTRY_0(jlong, getFailedSpeculationsAddress, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
3142 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
3143 MethodData* method_data = get_profiling_method_data(method, CHECK_0);
3144 return (jlong) method_data->get_failed_speculations_address();
3145 C2V_END
3146
3147 C2V_VMENTRY(void, releaseFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address))
3148 FailedSpeculation::free_failed_speculations((FailedSpeculation**)(address) failed_speculations_address);
3149 C2V_END
3150
3151 C2V_VMENTRY_0(jboolean, addFailedSpeculation, (JNIEnv* env, jobject, jlong failed_speculations_address, jbyteArray speculation_obj))
3152 JVMCIPrimitiveArray speculation_handle = JVMCIENV->wrap(speculation_obj);
3153 int speculation_len = JVMCIENV->get_length(speculation_handle);
3154 char* speculation = NEW_RESOURCE_ARRAY(char, speculation_len);
3155 JVMCIENV->copy_bytes_to(speculation_handle, (jbyte*) speculation, 0, speculation_len);
3156 return FailedSpeculation::add_failed_speculation(nullptr, (FailedSpeculation**)(address) failed_speculations_address, (address) speculation, speculation_len);
3157 C2V_END
3158
3159 C2V_VMENTRY(void, callSystemExit, (JNIEnv* env, jobject, jint status))
3160 if (!JVMCIENV->is_hotspot()) {
3161 // It's generally not safe to call Java code before the module system is initialized
3162 if (!Universe::is_module_initialized()) {
3163 JVMCI_event_1("callSystemExit(%d) before Universe::is_module_initialized() -> direct VM exit", status);
3164 vm_exit_during_initialization();
3165 }
3166 }
3167 CompilerThreadCanCallJava canCallJava(thread, true);
3168 JavaValue result(T_VOID);
3169 JavaCallArguments jargs(1);
3170 jargs.push_int(status);
3171 JavaCalls::call_static(&result,
3172 vmClasses::System_klass(),
3173 vmSymbols::exit_method_name(),
3174 vmSymbols::int_void_signature(),
3175 &jargs,
3176 CHECK);
3177 C2V_END
3178
3179 C2V_VMENTRY_0(jlong, ticksNow, (JNIEnv* env, jobject))
3180 return CompilerEvent::ticksNow();
3181 C2V_END
3182
3183 C2V_VMENTRY_0(jint, registerCompilerPhase, (JNIEnv* env, jobject, jstring jphase_name))
3184 #if INCLUDE_JFR
3185 JVMCIObject phase_name = JVMCIENV->wrap(jphase_name);
3186 const char *name = JVMCIENV->as_utf8_string(phase_name);
3187 return CompilerEvent::PhaseEvent::get_phase_id(name, true, true, true);
3188 #else
3189 return -1;
3190 #endif // !INCLUDE_JFR
3191 C2V_END
3192
3193 C2V_VMENTRY(void, notifyCompilerPhaseEvent, (JNIEnv* env, jobject, jlong startTime, jint phase, jint compileId, jint level))
3194 EventCompilerPhase event(UNTIMED);
3195 if (event.should_commit()) {
3196 CompilerEvent::PhaseEvent::post(event, startTime, phase, compileId, level);
3197 }
3198 C2V_END
3199
3200 C2V_VMENTRY(void, notifyCompilerInliningEvent, (JNIEnv* env, jobject, jint compileId, ARGUMENT_PAIR(caller), ARGUMENT_PAIR(callee), jboolean succeeded, jstring jmessage, jint bci))
3201 EventCompilerInlining event;
3202 if (event.should_commit()) {
3203 Method* caller = UNPACK_PAIR(Method, caller);
3204 Method* callee = UNPACK_PAIR(Method, callee);
3205 JVMCIObject message = JVMCIENV->wrap(jmessage);
3206 CompilerEvent::InlineEvent::post(event, compileId, caller, callee, succeeded, JVMCIENV->as_utf8_string(message), bci);
3207 }
3208 C2V_END
3209
3210 C2V_VMENTRY(void, setThreadLocalObject, (JNIEnv* env, jobject, jint id, jobject value))
3211 requireInHotSpot("setThreadLocalObject", JVMCI_CHECK);
3212 if (id == 0) {
3213 thread->set_jvmci_reserved_oop0(JNIHandles::resolve(value));
3214 return;
3215 }
3216 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
3217 err_msg("%d is not a valid thread local id", id));
3218 C2V_END
3219
3220 C2V_VMENTRY_NULL(jobject, getThreadLocalObject, (JNIEnv* env, jobject, jint id))
3221 requireInHotSpot("getThreadLocalObject", JVMCI_CHECK_NULL);
3222 if (id == 0) {
3223 return JNIHandles::make_local(thread->get_jvmci_reserved_oop0());
3224 }
3225 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(),
3226 err_msg("%d is not a valid thread local id", id));
3227 C2V_END
3228
3229 C2V_VMENTRY(void, setThreadLocalLong, (JNIEnv* env, jobject, jint id, jlong value))
3230 requireInHotSpot("setThreadLocalLong", JVMCI_CHECK);
3231 if (id == 0) {
3232 thread->set_jvmci_reserved0(value);
3233 } else if (id == 1) {
3234 thread->set_jvmci_reserved1(value);
3235 } else {
3236 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
3237 err_msg("%d is not a valid thread local id", id));
3238 }
3239 C2V_END
3240
3241 C2V_VMENTRY_0(jlong, getThreadLocalLong, (JNIEnv* env, jobject, jint id))
3242 requireInHotSpot("getThreadLocalLong", JVMCI_CHECK_0);
3243 if (id == 0) {
3244 return thread->get_jvmci_reserved0();
3245 } else if (id == 1) {
3246 return thread->get_jvmci_reserved1();
3247 } else {
3248 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
3249 err_msg("%d is not a valid thread local id", id));
3250 }
3251 C2V_END
3252
3253 C2V_VMENTRY(void, getOopMapAt, (JNIEnv* env, jobject, ARGUMENT_PAIR(method),
3254 jint bci, jlongArray oop_map_handle))
3255 methodHandle method(THREAD, UNPACK_PAIR(Method, method));
3256 if (bci < 0 || bci >= method->code_size()) {
3257 JVMCI_THROW_MSG(IllegalArgumentException,
3258 err_msg("bci %d is out of bounds [0 .. %d)", bci, method->code_size()));
3259 }
3260 InterpreterOopMap mask;
3261 OopMapCache::compute_one_oop_map(method, bci, &mask);
3262 if (!mask.has_valid_mask()) {
3263 JVMCI_THROW_MSG(IllegalArgumentException, err_msg("bci %d is not valid", bci));
3264 }
3265 if (mask.number_of_entries() == 0) {
3266 return;
3267 }
3268
3269 int nslots = method->max_locals() + method->max_stack();
3270 int nwords = ((nslots - 1) / 64) + 1;
3271 JVMCIPrimitiveArray oop_map = JVMCIENV->wrap(oop_map_handle);
3272 int oop_map_len = JVMCIENV->get_length(oop_map);
3273 if (nwords > oop_map_len) {
3274 JVMCI_THROW_MSG(IllegalArgumentException,
3275 err_msg("oop map too short: %d > %d", nwords, oop_map_len));
3276 }
3277
3278 jlong* oop_map_buf = NEW_RESOURCE_ARRAY_IN_THREAD_RETURN_NULL(THREAD, jlong, nwords);
3279 if (oop_map_buf == nullptr) {
3280 JVMCI_THROW_MSG(InternalError, err_msg("could not allocate %d longs", nwords));
3281 }
3282 for (int i = 0; i < nwords; i++) {
3283 oop_map_buf[i] = 0L;
3284 }
3285
3286 BitMapView oop_map_view = BitMapView((BitMap::bm_word_t*) oop_map_buf, nwords * BitsPerLong);
3287 for (int i = 0; i < nslots; i++) {
3288 if (mask.is_oop(i)) {
3289 oop_map_view.set_bit(i);
3290 }
3291 }
3292 JVMCIENV->copy_longs_from((jlong*)oop_map_buf, oop_map, 0, nwords);
3293 C2V_END
3294
3295 C2V_VMENTRY_0(jint, getCompilationActivityMode, (JNIEnv* env, jobject))
3296 return CompileBroker::get_compilation_activity_mode();
3297 C2V_END
3298
3299 C2V_VMENTRY_0(jboolean, isCompilerThread, (JNIEnv* env, jobject))
3300 return thread->is_Compiler_thread();
3301 C2V_END
3302
3303 #define CC (char*) /*cast a literal from (const char*)*/
3304 #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &(c2v_ ## f))
3305
3306 #define STRING "Ljava/lang/String;"
3307 #define OBJECT "Ljava/lang/Object;"
3308 #define CLASS "Ljava/lang/Class;"
3309 #define OBJECTCONSTANT "Ljdk/vm/ci/hotspot/HotSpotObjectConstantImpl;"
3310 #define EXECUTABLE "Ljava/lang/reflect/Executable;"
3311 #define STACK_TRACE_ELEMENT "Ljava/lang/StackTraceElement;"
3312 #define INSTALLED_CODE "Ljdk/vm/ci/code/InstalledCode;"
3313 #define BYTECODE_FRAME "Ljdk/vm/ci/code/BytecodeFrame;"
3314 #define JAVACONSTANT "Ljdk/vm/ci/meta/JavaConstant;"
3315 #define INSPECTED_FRAME_VISITOR "Ljdk/vm/ci/code/stack/InspectedFrameVisitor;"
3316 #define RESOLVED_METHOD "Ljdk/vm/ci/meta/ResolvedJavaMethod;"
3317 #define FIELDINFO "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl$FieldInfo;"
3318 #define HS_RESOLVED_TYPE "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaType;"
3319 #define HS_INSTALLED_CODE "Ljdk/vm/ci/hotspot/HotSpotInstalledCode;"
3320 #define HS_NMETHOD "Ljdk/vm/ci/hotspot/HotSpotNmethod;"
3321 #define HS_COMPILED_CODE "Ljdk/vm/ci/hotspot/HotSpotCompiledCode;"
3322 #define HS_CONFIG "Ljdk/vm/ci/hotspot/HotSpotVMConfig;"
3323 #define HS_STACK_FRAME_REF "Ljdk/vm/ci/hotspot/HotSpotStackFrameReference;"
3324 #define HS_SPECULATION_LOG "Ljdk/vm/ci/hotspot/HotSpotSpeculationLog;"
3325 #define REFLECTION_EXECUTABLE "Ljava/lang/reflect/Executable;"
3326 #define REFLECTION_FIELD "Ljava/lang/reflect/Field;"
3327
3328 // Types wrapping VM pointers. The ...2 macro is for a pair: (wrapper, pointer)
3329 #define HS_METHOD "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;"
3330 #define HS_METHOD2 "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;J"
3331 #define HS_KLASS "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;"
3332 #define HS_KLASS2 "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;J"
3333 #define HS_CONSTANT_POOL "Ljdk/vm/ci/hotspot/HotSpotConstantPool;"
3334 #define HS_CONSTANT_POOL2 "Ljdk/vm/ci/hotspot/HotSpotConstantPool;J"
3335
3336 JNINativeMethod CompilerToVM::methods[] = {
3337 {CC "getBytecode", CC "(" HS_METHOD2 ")[B", FN_PTR(getBytecode)},
3338 {CC "getExceptionTableStart", CC "(" HS_METHOD2 ")J", FN_PTR(getExceptionTableStart)},
3339 {CC "getExceptionTableLength", CC "(" HS_METHOD2 ")I", FN_PTR(getExceptionTableLength)},
3340 {CC "findUniqueConcreteMethod", CC "(" HS_KLASS2 HS_METHOD2 ")" HS_METHOD, FN_PTR(findUniqueConcreteMethod)},
3341 {CC "getImplementor", CC "(" HS_KLASS2 ")" HS_KLASS, FN_PTR(getImplementor)},
3342 {CC "getStackTraceElement", CC "(" HS_METHOD2 "I)" STACK_TRACE_ELEMENT, FN_PTR(getStackTraceElement)},
3343 {CC "methodIsIgnoredBySecurityStackWalk", CC "(" HS_METHOD2 ")Z", FN_PTR(methodIsIgnoredBySecurityStackWalk)},
3344 {CC "setNotInlinableOrCompilable", CC "(" HS_METHOD2 ")V", FN_PTR(setNotInlinableOrCompilable)},
3345 {CC "isCompilable", CC "(" HS_METHOD2 ")Z", FN_PTR(isCompilable)},
3346 {CC "hasNeverInlineDirective", CC "(" HS_METHOD2 ")Z", FN_PTR(hasNeverInlineDirective)},
3347 {CC "shouldInlineMethod", CC "(" HS_METHOD2 ")Z", FN_PTR(shouldInlineMethod)},
3348 {CC "lookupType", CC "(" STRING HS_KLASS2 "IZ)" HS_RESOLVED_TYPE, FN_PTR(lookupType)},
3349 {CC "lookupJClass", CC "(J)" HS_RESOLVED_TYPE, FN_PTR(lookupJClass)},
3350 {CC "getJObjectValue", CC "(" OBJECTCONSTANT ")J", FN_PTR(getJObjectValue)},
3351 {CC "getArrayType", CC "(C" HS_KLASS2 ")" HS_KLASS, FN_PTR(getArrayType)},
3352 {CC "lookupClass", CC "(" CLASS ")" HS_RESOLVED_TYPE, FN_PTR(lookupClass)},
3353 {CC "lookupNameInPool", CC "(" HS_CONSTANT_POOL2 "II)" STRING, FN_PTR(lookupNameInPool)},
3354 {CC "lookupNameAndTypeRefIndexInPool", CC "(" HS_CONSTANT_POOL2 "II)I", FN_PTR(lookupNameAndTypeRefIndexInPool)},
3355 {CC "lookupSignatureInPool", CC "(" HS_CONSTANT_POOL2 "II)" STRING, FN_PTR(lookupSignatureInPool)},
3356 {CC "lookupKlassRefIndexInPool", CC "(" HS_CONSTANT_POOL2 "II)I", FN_PTR(lookupKlassRefIndexInPool)},
3357 {CC "lookupKlassInPool", CC "(" HS_CONSTANT_POOL2 "I)Ljava/lang/Object;", FN_PTR(lookupKlassInPool)},
3358 {CC "lookupAppendixInPool", CC "(" HS_CONSTANT_POOL2 "II)" OBJECTCONSTANT, FN_PTR(lookupAppendixInPool)},
3359 {CC "lookupMethodInPool", CC "(" HS_CONSTANT_POOL2 "IB" HS_METHOD2 ")" HS_METHOD, FN_PTR(lookupMethodInPool)},
3360 {CC "lookupConstantInPool", CC "(" HS_CONSTANT_POOL2 "IZ)" JAVACONSTANT, FN_PTR(lookupConstantInPool)},
3361 {CC "getNumIndyEntries", CC "(" HS_CONSTANT_POOL2 ")I", FN_PTR(getNumIndyEntries)},
3362 {CC "resolveBootstrapMethod", CC "(" HS_CONSTANT_POOL2 "I)[" OBJECT, FN_PTR(resolveBootstrapMethod)},
3363 {CC "bootstrapArgumentIndexAt", CC "(" HS_CONSTANT_POOL2 "II)I", FN_PTR(bootstrapArgumentIndexAt)},
3364 {CC "getUncachedStringInPool", CC "(" HS_CONSTANT_POOL2 "I)" JAVACONSTANT, FN_PTR(getUncachedStringInPool)},
3365 {CC "resolveTypeInPool", CC "(" HS_CONSTANT_POOL2 "I)" HS_KLASS, FN_PTR(resolveTypeInPool)},
3366 {CC "resolveFieldInPool", CC "(" HS_CONSTANT_POOL2 "I" HS_METHOD2 "B[I)" HS_KLASS, FN_PTR(resolveFieldInPool)},
3367 {CC "decodeFieldIndexToCPIndex", CC "(" HS_CONSTANT_POOL2 "I)I", FN_PTR(decodeFieldIndexToCPIndex)},
3368 {CC "decodeMethodIndexToCPIndex", CC "(" HS_CONSTANT_POOL2 "I)I", FN_PTR(decodeMethodIndexToCPIndex)},
3369 {CC "decodeIndyIndexToCPIndex", CC "(" HS_CONSTANT_POOL2 "IZ)I", FN_PTR(decodeIndyIndexToCPIndex)},
3370 {CC "resolveInvokeHandleInPool", CC "(" HS_CONSTANT_POOL2 "I)V", FN_PTR(resolveInvokeHandleInPool)},
3371 {CC "isResolvedInvokeHandleInPool", CC "(" HS_CONSTANT_POOL2 "II)I", FN_PTR(isResolvedInvokeHandleInPool)},
3372 {CC "resolveMethod", CC "(" HS_KLASS2 HS_METHOD2 HS_KLASS2 ")" HS_METHOD, FN_PTR(resolveMethod)},
3373 {CC "getSignaturePolymorphicHolders", CC "()[" STRING, FN_PTR(getSignaturePolymorphicHolders)},
3374 {CC "getVtableIndexForInterfaceMethod", CC "(" HS_KLASS2 HS_METHOD2 ")I", FN_PTR(getVtableIndexForInterfaceMethod)},
3375 {CC "getClassInitializer", CC "(" HS_KLASS2 ")" HS_METHOD, FN_PTR(getClassInitializer)},
3376 {CC "hasFinalizableSubclass", CC "(" HS_KLASS2 ")Z", FN_PTR(hasFinalizableSubclass)},
3377 {CC "getMaxCallTargetOffset", CC "(J)J", FN_PTR(getMaxCallTargetOffset)},
3378 {CC "asResolvedJavaMethod", CC "(" EXECUTABLE ")" HS_METHOD, FN_PTR(asResolvedJavaMethod)},
3379 {CC "getResolvedJavaMethod", CC "(" OBJECTCONSTANT "J)" HS_METHOD, FN_PTR(getResolvedJavaMethod)},
3380 {CC "getConstantPool", CC "(" OBJECT "JZ)" HS_CONSTANT_POOL, FN_PTR(getConstantPool)},
3381 {CC "getResolvedJavaType0", CC "(Ljava/lang/Object;JZ)" HS_KLASS, FN_PTR(getResolvedJavaType0)},
3382 {CC "readConfiguration", CC "()[" OBJECT, FN_PTR(readConfiguration)},
3383 {CC "installCode0", CC "(JJZ" HS_COMPILED_CODE "[" OBJECT INSTALLED_CODE "J[B)I", FN_PTR(installCode0)},
3384 {CC "getInvalidationReasonDescription", CC "(I)" STRING, FN_PTR(getInvalidationReasonDescription)},
3385 {CC "getInstallCodeFlags", CC "()I", FN_PTR(getInstallCodeFlags)},
3386 {CC "resetCompilationStatistics", CC "()V", FN_PTR(resetCompilationStatistics)},
3387 {CC "disassembleCodeBlob", CC "(" INSTALLED_CODE ")" STRING, FN_PTR(disassembleCodeBlob)},
3388 {CC "executeHotSpotNmethod", CC "([" OBJECT HS_NMETHOD ")" OBJECT, FN_PTR(executeHotSpotNmethod)},
3389 {CC "getLineNumberTable", CC "(" HS_METHOD2 ")[J", FN_PTR(getLineNumberTable)},
3390 {CC "getLocalVariableTableStart", CC "(" HS_METHOD2 ")J", FN_PTR(getLocalVariableTableStart)},
3391 {CC "getLocalVariableTableLength", CC "(" HS_METHOD2 ")I", FN_PTR(getLocalVariableTableLength)},
3392 {CC "reprofile", CC "(" HS_METHOD2 ")V", FN_PTR(reprofile)},
3393 {CC "invalidateHotSpotNmethod", CC "(" HS_NMETHOD "ZI)V", FN_PTR(invalidateHotSpotNmethod)},
3394 {CC "collectCounters", CC "()[J", FN_PTR(collectCounters)},
3395 {CC "getCountersSize", CC "()I", FN_PTR(getCountersSize)},
3396 {CC "setCountersSize", CC "(I)Z", FN_PTR(setCountersSize)},
3397 {CC "allocateCompileId", CC "(" HS_METHOD2 "I)I", FN_PTR(allocateCompileId)},
3398 {CC "isMature", CC "(J)Z", FN_PTR(isMature)},
3399 {CC "hasCompiledCodeForOSR", CC "(" HS_METHOD2 "II)Z", FN_PTR(hasCompiledCodeForOSR)},
3400 {CC "getSymbol", CC "(J)" STRING, FN_PTR(getSymbol)},
3401 {CC "getSignatureName", CC "(J)" STRING, FN_PTR(getSignatureName)},
3402 {CC "iterateFrames", CC "([" RESOLVED_METHOD "[" RESOLVED_METHOD "I" INSPECTED_FRAME_VISITOR ")" OBJECT, FN_PTR(iterateFrames)},
3403 {CC "materializeVirtualObjects", CC "(" HS_STACK_FRAME_REF "Z)V", FN_PTR(materializeVirtualObjects)},
3404 {CC "shouldDebugNonSafepoints", CC "()Z", FN_PTR(shouldDebugNonSafepoints)},
3405 {CC "writeDebugOutput", CC "(JIZ)V", FN_PTR(writeDebugOutput)},
3406 {CC "flushDebugOutput", CC "()V", FN_PTR(flushDebugOutput)},
3407 {CC "methodDataProfileDataSize", CC "(JI)I", FN_PTR(methodDataProfileDataSize)},
3408 {CC "methodDataExceptionSeen", CC "(JI)I", FN_PTR(methodDataExceptionSeen)},
3409 {CC "interpreterFrameSize", CC "(" BYTECODE_FRAME ")I", FN_PTR(interpreterFrameSize)},
3410 {CC "compileToBytecode", CC "(" OBJECTCONSTANT ")V", FN_PTR(compileToBytecode)},
3411 {CC "getFlagValue", CC "(" STRING ")" OBJECT, FN_PTR(getFlagValue)},
3412 {CC "getInterfaces", CC "(" HS_KLASS2 ")[" HS_KLASS, FN_PTR(getInterfaces)},
3413 {CC "getComponentType", CC "(" HS_KLASS2 ")" HS_RESOLVED_TYPE, FN_PTR(getComponentType)},
3414 {CC "ensureInitialized", CC "(" HS_KLASS2 ")V", FN_PTR(ensureInitialized)},
3415 {CC "ensureLinked", CC "(" HS_KLASS2 ")V", FN_PTR(ensureLinked)},
3416 {CC "getIdentityHashCode", CC "(" OBJECTCONSTANT ")I", FN_PTR(getIdentityHashCode)},
3417 {CC "isInternedString", CC "(" OBJECTCONSTANT ")Z", FN_PTR(isInternedString)},
3418 {CC "unboxPrimitive", CC "(" OBJECTCONSTANT ")" OBJECT, FN_PTR(unboxPrimitive)},
3419 {CC "boxPrimitive", CC "(" OBJECT ")" OBJECTCONSTANT, FN_PTR(boxPrimitive)},
3420 {CC "getDeclaredConstructors", CC "(" HS_KLASS2 ")[" RESOLVED_METHOD, FN_PTR(getDeclaredConstructors)},
3421 {CC "getDeclaredMethods", CC "(" HS_KLASS2 ")[" RESOLVED_METHOD, FN_PTR(getDeclaredMethods)},
3422 {CC "getAllMethods", CC "(" HS_KLASS2 ")[" RESOLVED_METHOD, FN_PTR(getAllMethods)},
3423 {CC "getDeclaredFieldsInfo", CC "(" HS_KLASS2 ")[" FIELDINFO, FN_PTR(getDeclaredFieldsInfo)},
3424 {CC "readStaticFieldValue", CC "(" HS_KLASS2 "JC)" JAVACONSTANT, FN_PTR(readStaticFieldValue)},
3425 {CC "readFieldValue", CC "(" OBJECTCONSTANT HS_KLASS2 "JC)" JAVACONSTANT, FN_PTR(readFieldValue)},
3426 {CC "isInstance", CC "(" HS_KLASS2 OBJECTCONSTANT ")Z", FN_PTR(isInstance)},
3427 {CC "isAssignableFrom", CC "(" HS_KLASS2 HS_KLASS2 ")Z", FN_PTR(isAssignableFrom)},
3428 {CC "isTrustedForIntrinsics", CC "(" HS_KLASS2 ")Z", FN_PTR(isTrustedForIntrinsics)},
3429 {CC "asJavaType", CC "(" OBJECTCONSTANT ")" HS_RESOLVED_TYPE, FN_PTR(asJavaType)},
3430 {CC "asString", CC "(" OBJECTCONSTANT ")" STRING, FN_PTR(asString)},
3431 {CC "equals", CC "(" OBJECTCONSTANT "J" OBJECTCONSTANT "J)Z", FN_PTR(equals)},
3432 {CC "getJavaMirror", CC "(" HS_KLASS2 ")" OBJECTCONSTANT, FN_PTR(getJavaMirror)},
3433 {CC "getArrayLength", CC "(" OBJECTCONSTANT ")I", FN_PTR(getArrayLength)},
3434 {CC "readArrayElement", CC "(" OBJECTCONSTANT "I)Ljava/lang/Object;", FN_PTR(readArrayElement)},
3435 {CC "arrayBaseOffset", CC "(C)I", FN_PTR(arrayBaseOffset)},
3436 {CC "arrayIndexScale", CC "(C)I", FN_PTR(arrayIndexScale)},
3437 {CC "clearOopHandle", CC "(J)V", FN_PTR(clearOopHandle)},
3438 {CC "releaseClearedOopHandles", CC "()V", FN_PTR(releaseClearedOopHandles)},
3439 {CC "registerNativeMethods", CC "(" CLASS ")[J", FN_PTR(registerNativeMethods)},
3440 {CC "isCurrentThreadAttached", CC "()Z", FN_PTR(isCurrentThreadAttached)},
3441 {CC "getCurrentJavaThread", CC "()J", FN_PTR(getCurrentJavaThread)},
3442 {CC "attachCurrentThread", CC "([BZ[J)Z", FN_PTR(attachCurrentThread)},
3443 {CC "detachCurrentThread", CC "(Z)Z", FN_PTR(detachCurrentThread)},
3444 {CC "translate", CC "(" OBJECT "Z)J", FN_PTR(translate)},
3445 {CC "unhand", CC "(J)" OBJECT, FN_PTR(unhand)},
3446 {CC "updateHotSpotNmethod", CC "(" HS_NMETHOD ")V", FN_PTR(updateHotSpotNmethod)},
3447 {CC "getCode", CC "(" HS_INSTALLED_CODE ")[B", FN_PTR(getCode)},
3448 {CC "asReflectionExecutable", CC "(" HS_METHOD2 ")" REFLECTION_EXECUTABLE, FN_PTR(asReflectionExecutable)},
3449 {CC "asReflectionField", CC "(" HS_KLASS2 "I)" REFLECTION_FIELD, FN_PTR(asReflectionField)},
3450 {CC "getEncodedClassAnnotationData", CC "(" HS_KLASS2 OBJECT "IJ)[B", FN_PTR(getEncodedClassAnnotationData)},
3451 {CC "getEncodedExecutableAnnotationData", CC "(" HS_METHOD2 OBJECT "IJ)[B", FN_PTR(getEncodedExecutableAnnotationData)},
3452 {CC "getEncodedFieldAnnotationData", CC "(" HS_KLASS2 "I" OBJECT "IJ)[B", FN_PTR(getEncodedFieldAnnotationData)},
3453 {CC "getFailedSpeculations", CC "(J[[B)[[B", FN_PTR(getFailedSpeculations)},
3454 {CC "getFailedSpeculationsAddress", CC "(" HS_METHOD2 ")J", FN_PTR(getFailedSpeculationsAddress)},
3455 {CC "releaseFailedSpeculations", CC "(J)V", FN_PTR(releaseFailedSpeculations)},
3456 {CC "addFailedSpeculation", CC "(J[B)Z", FN_PTR(addFailedSpeculation)},
3457 {CC "callSystemExit", CC "(I)V", FN_PTR(callSystemExit)},
3458 {CC "ticksNow", CC "()J", FN_PTR(ticksNow)},
3459 {CC "getThreadLocalObject", CC "(I)" OBJECT, FN_PTR(getThreadLocalObject)},
3460 {CC "setThreadLocalObject", CC "(I" OBJECT ")V", FN_PTR(setThreadLocalObject)},
3461 {CC "getThreadLocalLong", CC "(I)J", FN_PTR(getThreadLocalLong)},
3462 {CC "setThreadLocalLong", CC "(IJ)V", FN_PTR(setThreadLocalLong)},
3463 {CC "registerCompilerPhase", CC "(" STRING ")I", FN_PTR(registerCompilerPhase)},
3464 {CC "notifyCompilerPhaseEvent", CC "(JIII)V", FN_PTR(notifyCompilerPhaseEvent)},
3465 {CC "notifyCompilerInliningEvent", CC "(I" HS_METHOD2 HS_METHOD2 "ZLjava/lang/String;I)V", FN_PTR(notifyCompilerInliningEvent)},
3466 {CC "getOopMapAt", CC "(" HS_METHOD2 "I[J)V", FN_PTR(getOopMapAt)},
3467 {CC "updateCompilerThreadCanCallJava", CC "(Z)Z", FN_PTR(updateCompilerThreadCanCallJava)},
3468 {CC "getCompilationActivityMode", CC "()I", FN_PTR(getCompilationActivityMode)},
3469 {CC "isCompilerThread", CC "()Z", FN_PTR(isCompilerThread)},
3470 };
3471
3472 int CompilerToVM::methods_count() {
3473 return sizeof(methods) / sizeof(JNINativeMethod);
3474 }