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