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