13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "classfile/vmSymbols.hpp"
27 #include "code/nmethod.hpp"
28 #include "compiler/compilationPolicy.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "interpreter/interpreter.hpp"
31 #include "interpreter/linkResolver.hpp"
32 #include "memory/universe.hpp"
33 #include "oops/method.inline.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "prims/jniCheck.hpp"
36 #include "prims/jvmtiExport.hpp"
37 #include "runtime/handles.inline.hpp"
38 #include "runtime/interfaceSupport.inline.hpp"
39 #include "runtime/javaCalls.hpp"
40 #include "runtime/javaThread.hpp"
41 #include "runtime/jniHandles.inline.hpp"
42 #include "runtime/mutexLocker.hpp"
43 #include "runtime/os.inline.hpp"
44 #include "runtime/sharedRuntime.hpp"
45 #include "runtime/signature.hpp"
46 #include "runtime/stubRoutines.hpp"
47 #include "runtime/thread.inline.hpp"
48
49 // -----------------------------------------------------
50 // Implementation of JavaCallWrapper
51
52 JavaCallWrapper::JavaCallWrapper(const methodHandle& callee_method, Handle receiver, JavaValue* result, TRAPS) {
117
118 if (_thread->has_pending_exception() && _thread->has_last_Java_frame()) {
119 // If we get here, the Java code threw an exception that unwound a frame.
120 // It could be that the new frame anchor has not passed through the required
121 // StackWatermark barriers. Therefore, we process any such deferred unwind
122 // requests here.
123 StackWatermarkSet::after_unwind(_thread);
124 }
125 }
126
127
128 void JavaCallWrapper::oops_do(OopClosure* f) {
129 f->do_oop((oop*)&_receiver);
130 handles()->oops_do(f);
131 }
132
133
134 // Helper methods
135 static BasicType runtime_type_from(JavaValue* result) {
136 switch (result->get_type()) {
137 case T_BOOLEAN: // fall through
138 case T_CHAR : // fall through
139 case T_SHORT : // fall through
140 case T_INT : // fall through
141 #ifndef _LP64
142 case T_OBJECT : // fall through
143 case T_ARRAY : // fall through
144 #endif
145 case T_BYTE : // fall through
146 case T_VOID : return T_INT;
147 case T_LONG : return T_LONG;
148 case T_FLOAT : return T_FLOAT;
149 case T_DOUBLE : return T_DOUBLE;
150 #ifdef _LP64
151 case T_ARRAY : // fall through
152 case T_OBJECT: return T_OBJECT;
153 #endif
154 default:
155 ShouldNotReachHere();
156 return T_ILLEGAL;
157 }
158 }
159
160 // ============ Virtual calls ============
161
162 void JavaCalls::call_virtual(JavaValue* result, Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
163 CallInfo callinfo;
164 Handle receiver = args->receiver();
165 Klass* recvrKlass = receiver.is_null() ? (Klass*)nullptr : receiver->klass();
166 LinkInfo link_info(spec_klass, name, signature);
167 LinkResolver::resolve_virtual_call(
168 callinfo, receiver, recvrKlass, link_info, true, CHECK);
169 methodHandle method(THREAD, callinfo.selected_method());
170 assert(method.not_null(), "should have thrown exception");
171
172 // Invoke the method
353 // Find receiver
354 Handle receiver = (!method->is_static()) ? args->receiver() : Handle();
355
356 // When we reenter Java, we need to re-enable the reserved/yellow zone which
357 // might already be disabled when we are in VM.
358 thread->stack_overflow_state()->reguard_stack_if_needed();
359
360 // Check that there are shadow pages available before changing thread state
361 // to Java. Calculate current_stack_pointer here to make sure
362 // stack_shadow_pages_available() and map_stack_shadow_pages() use the same sp.
363 address sp = os::current_stack_pointer();
364 if (!os::stack_shadow_pages_available(THREAD, method, sp)) {
365 // Throw stack overflow exception with preinitialized exception.
366 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__, method);
367 return;
368 } else {
369 // Touch pages checked if the OS needs them to be touched to be mapped.
370 os::map_stack_shadow_pages(sp);
371 }
372
373 // do call
374 { JavaCallWrapper link(method, receiver, result, CHECK);
375 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner
376
377 // NOTE: if we move the computation of the result_val_address inside
378 // the call to call_stub, the optimizer produces wrong code.
379 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr());
380 intptr_t* parameter_address = args->parameters();
381
382 address entry_point;
383 {
384 // The enter_interp_only_mode use handshake to set interp_only mode
385 // so no safepoint should be allowed between is_interp_only_mode() and call
386 NoSafepointVerifier nsv;
387 if (JvmtiExport::can_post_interpreter_events() && thread->is_interp_only_mode()) {
388 entry_point = method->interpreter_entry();
389 } else {
390 // Since the call stub sets up like the interpreter we call the from_interpreted_entry
391 // so we can go compiled via a i2c.
392 entry_point = method->from_interpreted_entry();
393 }
394 }
395 {
396 MACOS_AARCH64_ONLY(ThreadWXEnable wx(WXExec, thread));
397 StubRoutines::call_stub()(
398 (address)&link,
399 // (intptr_t*)&(result->_value), // see NOTE above (compiler problem)
400 result_val_address, // see NOTE above (compiler problem)
401 result_type,
402 method(),
403 entry_point,
404 parameter_address,
405 args->size_of_parameters(),
406 CHECK
407 );
408 }
409
410 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call)
411 // Preserve oop return value across possible gc points
412 if (oop_result_flag) {
413 thread->set_vm_result_oop(result->get_oop());
414 }
415 }
416 } // Exit JavaCallWrapper (can block - potential return oop must be preserved)
417
418 // Check if a thread stop or suspend should be executed
419 // The following assert was not realistic. Thread.stop can set that bit at any moment.
420 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed");
421
422 // Restore possible oop return
423 if (oop_result_flag) {
424 result->set_oop(thread->vm_result_oop());
425 thread->set_vm_result_oop(nullptr);
426 }
427 }
428
429
430 //--------------------------------------------------------------------------------------
431 // Implementation of JavaCallArguments
432
433 inline bool is_value_state_indirect_oop(uint state) {
434 assert(state != JavaCallArguments::value_state_oop,
435 "Checking for handles after removal");
436 assert(state < JavaCallArguments::value_state_limit,
437 "Invalid value state %u", state);
438 return state != JavaCallArguments::value_state_primitive;
439 }
440
441 inline oop resolve_indirect_oop(intptr_t value, uint state) {
442 switch (state) {
443 case JavaCallArguments::value_state_handle:
444 {
445 oop* ptr = reinterpret_cast<oop*>(value);
554 case T_INT:
555 case T_FLOAT: // this one also
556 check_single_word(); break;
557 case T_LONG:
558 case T_DOUBLE:
559 check_double_word(); break;
560 case T_ARRAY:
561 case T_OBJECT:
562 check_reference(); break;
563 default:
564 ShouldNotReachHere();
565 }
566 }
567 };
568
569
570 void JavaCallArguments::verify(const methodHandle& method, BasicType return_type) {
571 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed");
572
573 // Treat T_OBJECT and T_ARRAY as the same
574 if (is_reference_type(return_type)) return_type = T_OBJECT;
575
576 // Check that oop information is correct
577 Symbol* signature = method->signature();
578
579 SignatureChekker sc(signature,
580 return_type,
581 method->is_static(),
582 _value_state,
583 _value);
584 }
|
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "classfile/vmSymbols.hpp"
27 #include "code/nmethod.hpp"
28 #include "compiler/compilationPolicy.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "interpreter/interpreter.hpp"
31 #include "interpreter/linkResolver.hpp"
32 #include "memory/universe.hpp"
33 #include "oops/inlineKlass.hpp"
34 #include "oops/method.inline.hpp"
35 #include "oops/oop.inline.hpp"
36 #include "prims/jniCheck.hpp"
37 #include "prims/jvmtiExport.hpp"
38 #include "runtime/handles.inline.hpp"
39 #include "runtime/interfaceSupport.inline.hpp"
40 #include "runtime/javaCalls.hpp"
41 #include "runtime/javaThread.hpp"
42 #include "runtime/jniHandles.inline.hpp"
43 #include "runtime/mutexLocker.hpp"
44 #include "runtime/os.inline.hpp"
45 #include "runtime/sharedRuntime.hpp"
46 #include "runtime/signature.hpp"
47 #include "runtime/stubRoutines.hpp"
48 #include "runtime/thread.inline.hpp"
49
50 // -----------------------------------------------------
51 // Implementation of JavaCallWrapper
52
53 JavaCallWrapper::JavaCallWrapper(const methodHandle& callee_method, Handle receiver, JavaValue* result, TRAPS) {
118
119 if (_thread->has_pending_exception() && _thread->has_last_Java_frame()) {
120 // If we get here, the Java code threw an exception that unwound a frame.
121 // It could be that the new frame anchor has not passed through the required
122 // StackWatermark barriers. Therefore, we process any such deferred unwind
123 // requests here.
124 StackWatermarkSet::after_unwind(_thread);
125 }
126 }
127
128
129 void JavaCallWrapper::oops_do(OopClosure* f) {
130 f->do_oop((oop*)&_receiver);
131 handles()->oops_do(f);
132 }
133
134
135 // Helper methods
136 static BasicType runtime_type_from(JavaValue* result) {
137 switch (result->get_type()) {
138 case T_BOOLEAN : // fall through
139 case T_CHAR : // fall through
140 case T_SHORT : // fall through
141 case T_INT : // fall through
142 #ifndef _LP64
143 case T_OBJECT : // fall through
144 case T_ARRAY : // fall through
145 case T_FLAT_ELEMENT: // fall through
146 #endif
147 case T_BYTE : // fall through
148 case T_VOID : return T_INT;
149 case T_LONG : return T_LONG;
150 case T_FLOAT : return T_FLOAT;
151 case T_DOUBLE : return T_DOUBLE;
152 #ifdef _LP64
153 case T_ARRAY : // fall through
154 case T_OBJECT : return T_OBJECT;
155 #endif
156 default:
157 ShouldNotReachHere();
158 return T_ILLEGAL;
159 }
160 }
161
162 // ============ Virtual calls ============
163
164 void JavaCalls::call_virtual(JavaValue* result, Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
165 CallInfo callinfo;
166 Handle receiver = args->receiver();
167 Klass* recvrKlass = receiver.is_null() ? (Klass*)nullptr : receiver->klass();
168 LinkInfo link_info(spec_klass, name, signature);
169 LinkResolver::resolve_virtual_call(
170 callinfo, receiver, recvrKlass, link_info, true, CHECK);
171 methodHandle method(THREAD, callinfo.selected_method());
172 assert(method.not_null(), "should have thrown exception");
173
174 // Invoke the method
355 // Find receiver
356 Handle receiver = (!method->is_static()) ? args->receiver() : Handle();
357
358 // When we reenter Java, we need to re-enable the reserved/yellow zone which
359 // might already be disabled when we are in VM.
360 thread->stack_overflow_state()->reguard_stack_if_needed();
361
362 // Check that there are shadow pages available before changing thread state
363 // to Java. Calculate current_stack_pointer here to make sure
364 // stack_shadow_pages_available() and map_stack_shadow_pages() use the same sp.
365 address sp = os::current_stack_pointer();
366 if (!os::stack_shadow_pages_available(THREAD, method, sp)) {
367 // Throw stack overflow exception with preinitialized exception.
368 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__, method);
369 return;
370 } else {
371 // Touch pages checked if the OS needs them to be touched to be mapped.
372 os::map_stack_shadow_pages(sp);
373 }
374
375 jobject value_buffer = nullptr;
376 if (InlineTypeReturnedAsFields && (result->get_type() == T_OBJECT)) {
377 // Pre allocate a buffered inline type in case the result is returned
378 // flattened by compiled code
379 InlineKlass* vk = method->returns_inline_type();
380 if (vk != nullptr && vk->can_be_returned_as_fields()) {
381 oop instance = vk->allocate_instance(CHECK);
382 value_buffer = JNIHandles::make_local(thread, instance);
383 result->set_jobject(value_buffer);
384 }
385 }
386
387 // do call
388 { JavaCallWrapper link(method, receiver, result, CHECK);
389 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner
390
391 // NOTE: if we move the computation of the result_val_address inside
392 // the call to call_stub, the optimizer produces wrong code.
393 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr());
394 intptr_t* parameter_address = args->parameters();
395
396 address entry_point;
397 {
398 // The enter_interp_only_mode use handshake to set interp_only mode
399 // so no safepoint should be allowed between is_interp_only_mode() and call
400 NoSafepointVerifier nsv;
401 bool is_interp_only_mode = (StressCallingConvention && (os::random() % (1 << 10)) == 0) || thread->is_interp_only_mode();
402 if (JvmtiExport::can_post_interpreter_events() && is_interp_only_mode) {
403 entry_point = method->interpreter_entry();
404 } else {
405 // Since the call stub sets up like the interpreter we call the from_interpreted_entry
406 // so we can go compiled via a i2c.
407 entry_point = method->from_interpreted_entry();
408 }
409 }
410 {
411 MACOS_AARCH64_ONLY(ThreadWXEnable wx(WXExec, thread));
412 StubRoutines::call_stub()(
413 (address)&link,
414 // (intptr_t*)&(result->_value), // see NOTE above (compiler problem)
415 result_val_address, // see NOTE above (compiler problem)
416 result_type,
417 method(),
418 entry_point,
419 parameter_address,
420 args->size_of_parameters(),
421 CHECK
422 );
423 }
424
425 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call)
426 // Preserve oop return value across possible gc points
427 if (oop_result_flag) {
428 thread->set_vm_result_oop(result->get_oop());
429 }
430 }
431 } // Exit JavaCallWrapper (can block - potential return oop must be preserved)
432
433 // Check if a thread stop or suspend should be executed
434 // The following assert was not realistic. Thread.stop can set that bit at any moment.
435 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed");
436
437 // Restore possible oop return
438 if (oop_result_flag) {
439 result->set_oop(thread->vm_result_oop());
440 thread->set_vm_result_oop(nullptr);
441 JNIHandles::destroy_local(value_buffer);
442 }
443 }
444
445
446 //--------------------------------------------------------------------------------------
447 // Implementation of JavaCallArguments
448
449 inline bool is_value_state_indirect_oop(uint state) {
450 assert(state != JavaCallArguments::value_state_oop,
451 "Checking for handles after removal");
452 assert(state < JavaCallArguments::value_state_limit,
453 "Invalid value state %u", state);
454 return state != JavaCallArguments::value_state_primitive;
455 }
456
457 inline oop resolve_indirect_oop(intptr_t value, uint state) {
458 switch (state) {
459 case JavaCallArguments::value_state_handle:
460 {
461 oop* ptr = reinterpret_cast<oop*>(value);
570 case T_INT:
571 case T_FLOAT: // this one also
572 check_single_word(); break;
573 case T_LONG:
574 case T_DOUBLE:
575 check_double_word(); break;
576 case T_ARRAY:
577 case T_OBJECT:
578 check_reference(); break;
579 default:
580 ShouldNotReachHere();
581 }
582 }
583 };
584
585
586 void JavaCallArguments::verify(const methodHandle& method, BasicType return_type) {
587 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed");
588
589 // Treat T_OBJECT and T_ARRAY as the same
590 if (return_type == T_ARRAY) return_type = T_OBJECT;
591
592 // Check that oop information is correct
593 Symbol* signature = method->signature();
594
595 SignatureChekker sc(signature,
596 return_type,
597 method->is_static(),
598 _value_state,
599 _value);
600 }
|