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 #if INCLUDE_JVMCI
49 #include "jvmci/jvmciJavaClasses.hpp"
50 #endif
51
52 // -----------------------------------------------------
124
125 if (_thread->has_pending_exception() && _thread->has_last_Java_frame()) {
126 // If we get here, the Java code threw an exception that unwound a frame.
127 // It could be that the new frame anchor has not passed through the required
128 // StackWatermark barriers. Therefore, we process any such deferred unwind
129 // requests here.
130 StackWatermarkSet::after_unwind(_thread);
131 }
132 }
133
134
135 void JavaCallWrapper::oops_do(OopClosure* f) {
136 f->do_oop((oop*)&_receiver);
137 handles()->oops_do(f);
138 }
139
140
141 // Helper methods
142 static BasicType runtime_type_from(JavaValue* result) {
143 switch (result->get_type()) {
144 case T_BOOLEAN: // fall through
145 case T_CHAR : // fall through
146 case T_SHORT : // fall through
147 case T_INT : // fall through
148 #ifndef _LP64
149 case T_OBJECT : // fall through
150 case T_ARRAY : // fall through
151 #endif
152 case T_BYTE : // fall through
153 case T_VOID : return T_INT;
154 case T_LONG : return T_LONG;
155 case T_FLOAT : return T_FLOAT;
156 case T_DOUBLE : return T_DOUBLE;
157 #ifdef _LP64
158 case T_ARRAY : // fall through
159 case T_OBJECT: return T_OBJECT;
160 #endif
161 default:
162 ShouldNotReachHere();
163 return T_ILLEGAL;
164 }
165 }
166
167 // ============ Virtual calls ============
168
169 void JavaCalls::call_virtual(JavaValue* result, Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
170 CallInfo callinfo;
171 Handle receiver = args->receiver();
172 Klass* recvrKlass = receiver.is_null() ? (Klass*)nullptr : receiver->klass();
173 LinkInfo link_info(spec_klass, name, signature);
174 LinkResolver::resolve_virtual_call(
175 callinfo, receiver, recvrKlass, link_info, true, CHECK);
176 methodHandle method(THREAD, callinfo.selected_method());
177 assert(method.not_null(), "should have thrown exception");
178
179 // Invoke the method
360 // Find receiver
361 Handle receiver = (!method->is_static()) ? args->receiver() : Handle();
362
363 // When we reenter Java, we need to re-enable the reserved/yellow zone which
364 // might already be disabled when we are in VM.
365 thread->stack_overflow_state()->reguard_stack_if_needed();
366
367 // Check that there are shadow pages available before changing thread state
368 // to Java. Calculate current_stack_pointer here to make sure
369 // stack_shadow_pages_available() and map_stack_shadow_pages() use the same sp.
370 address sp = os::current_stack_pointer();
371 if (!os::stack_shadow_pages_available(THREAD, method, sp)) {
372 // Throw stack overflow exception with preinitialized exception.
373 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__, method);
374 return;
375 } else {
376 // Touch pages checked if the OS needs them to be touched to be mapped.
377 os::map_stack_shadow_pages(sp);
378 }
379
380 // do call
381 { JavaCallWrapper link(method, receiver, result, CHECK);
382 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner
383
384 // NOTE: if we move the computation of the result_val_address inside
385 // the call to call_stub, the optimizer produces wrong code.
386 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr());
387 intptr_t* parameter_address = args->parameters();
388
389 address entry_point;
390 {
391 // The enter_interp_only_mode use handshake to set interp_only mode
392 // so no safepoint should be allowed between is_interp_only_mode() and call
393 NoSafepointVerifier nsv;
394 if (JvmtiExport::can_post_interpreter_events() && thread->is_interp_only_mode()) {
395 entry_point = method->interpreter_entry();
396 } else {
397 // Since the call stub sets up like the interpreter we call the from_interpreted_entry
398 // so we can go compiled via a i2c.
399 entry_point = method->from_interpreted_entry();
424 args->size_of_parameters(),
425 CHECK
426 );
427
428 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call)
429 // Preserve oop return value across possible gc points
430 if (oop_result_flag) {
431 thread->set_vm_result_oop(result->get_oop());
432 }
433 }
434 } // Exit JavaCallWrapper (can block - potential return oop must be preserved)
435
436 // Check if a thread stop or suspend should be executed
437 // The following assert was not realistic. Thread.stop can set that bit at any moment.
438 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed");
439
440 // Restore possible oop return
441 if (oop_result_flag) {
442 result->set_oop(thread->vm_result_oop());
443 thread->set_vm_result_oop(nullptr);
444 }
445 }
446
447
448 //--------------------------------------------------------------------------------------
449 // Implementation of JavaCallArguments
450
451 inline bool is_value_state_indirect_oop(uint state) {
452 assert(state != JavaCallArguments::value_state_oop,
453 "Checking for handles after removal");
454 assert(state < JavaCallArguments::value_state_limit,
455 "Invalid value state %u", state);
456 return state != JavaCallArguments::value_state_primitive;
457 }
458
459 inline oop resolve_indirect_oop(intptr_t value, uint state) {
460 switch (state) {
461 case JavaCallArguments::value_state_handle:
462 {
463 oop* ptr = reinterpret_cast<oop*>(value);
572 case T_INT:
573 case T_FLOAT: // this one also
574 check_single_word(); break;
575 case T_LONG:
576 case T_DOUBLE:
577 check_double_word(); break;
578 case T_ARRAY:
579 case T_OBJECT:
580 check_reference(); break;
581 default:
582 ShouldNotReachHere();
583 }
584 }
585 };
586
587
588 void JavaCallArguments::verify(const methodHandle& method, BasicType return_type) {
589 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed");
590
591 // Treat T_OBJECT and T_ARRAY as the same
592 if (is_reference_type(return_type)) return_type = T_OBJECT;
593
594 // Check that oop information is correct
595 Symbol* signature = method->signature();
596
597 SignatureChekker sc(signature,
598 return_type,
599 method->is_static(),
600 _value_state,
601 _value);
602 }
|
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 #if INCLUDE_JVMCI
50 #include "jvmci/jvmciJavaClasses.hpp"
51 #endif
52
53 // -----------------------------------------------------
125
126 if (_thread->has_pending_exception() && _thread->has_last_Java_frame()) {
127 // If we get here, the Java code threw an exception that unwound a frame.
128 // It could be that the new frame anchor has not passed through the required
129 // StackWatermark barriers. Therefore, we process any such deferred unwind
130 // requests here.
131 StackWatermarkSet::after_unwind(_thread);
132 }
133 }
134
135
136 void JavaCallWrapper::oops_do(OopClosure* f) {
137 f->do_oop((oop*)&_receiver);
138 handles()->oops_do(f);
139 }
140
141
142 // Helper methods
143 static BasicType runtime_type_from(JavaValue* result) {
144 switch (result->get_type()) {
145 case T_BOOLEAN : // fall through
146 case T_CHAR : // fall through
147 case T_SHORT : // fall through
148 case T_INT : // fall through
149 #ifndef _LP64
150 case T_OBJECT : // fall through
151 case T_ARRAY : // fall through
152 case T_FLAT_ELEMENT: // fall through
153 #endif
154 case T_BYTE : // fall through
155 case T_VOID : return T_INT;
156 case T_LONG : return T_LONG;
157 case T_FLOAT : return T_FLOAT;
158 case T_DOUBLE : return T_DOUBLE;
159 #ifdef _LP64
160 case T_ARRAY : // fall through
161 case T_OBJECT : return T_OBJECT;
162 #endif
163 default:
164 ShouldNotReachHere();
165 return T_ILLEGAL;
166 }
167 }
168
169 // ============ Virtual calls ============
170
171 void JavaCalls::call_virtual(JavaValue* result, Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
172 CallInfo callinfo;
173 Handle receiver = args->receiver();
174 Klass* recvrKlass = receiver.is_null() ? (Klass*)nullptr : receiver->klass();
175 LinkInfo link_info(spec_klass, name, signature);
176 LinkResolver::resolve_virtual_call(
177 callinfo, receiver, recvrKlass, link_info, true, CHECK);
178 methodHandle method(THREAD, callinfo.selected_method());
179 assert(method.not_null(), "should have thrown exception");
180
181 // Invoke the method
362 // Find receiver
363 Handle receiver = (!method->is_static()) ? args->receiver() : Handle();
364
365 // When we reenter Java, we need to re-enable the reserved/yellow zone which
366 // might already be disabled when we are in VM.
367 thread->stack_overflow_state()->reguard_stack_if_needed();
368
369 // Check that there are shadow pages available before changing thread state
370 // to Java. Calculate current_stack_pointer here to make sure
371 // stack_shadow_pages_available() and map_stack_shadow_pages() use the same sp.
372 address sp = os::current_stack_pointer();
373 if (!os::stack_shadow_pages_available(THREAD, method, sp)) {
374 // Throw stack overflow exception with preinitialized exception.
375 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__, method);
376 return;
377 } else {
378 // Touch pages checked if the OS needs them to be touched to be mapped.
379 os::map_stack_shadow_pages(sp);
380 }
381
382 jobject value_buffer = nullptr;
383 if (InlineTypeReturnedAsFields && (result->get_type() == T_OBJECT)) {
384 // Pre allocate a buffered inline type in case the result is returned
385 // flattened by compiled code
386 InlineKlass* vk = method->returns_inline_type();
387 if (vk != nullptr && vk->can_be_returned_as_fields()) {
388 oop instance = vk->allocate_instance(CHECK);
389 value_buffer = JNIHandles::make_local(thread, instance);
390 result->set_jobject(value_buffer);
391 }
392 }
393
394 // do call
395 { JavaCallWrapper link(method, receiver, result, CHECK);
396 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner
397
398 // NOTE: if we move the computation of the result_val_address inside
399 // the call to call_stub, the optimizer produces wrong code.
400 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr());
401 intptr_t* parameter_address = args->parameters();
402
403 address entry_point;
404 {
405 // The enter_interp_only_mode use handshake to set interp_only mode
406 // so no safepoint should be allowed between is_interp_only_mode() and call
407 NoSafepointVerifier nsv;
408 if (JvmtiExport::can_post_interpreter_events() && thread->is_interp_only_mode()) {
409 entry_point = method->interpreter_entry();
410 } else {
411 // Since the call stub sets up like the interpreter we call the from_interpreted_entry
412 // so we can go compiled via a i2c.
413 entry_point = method->from_interpreted_entry();
438 args->size_of_parameters(),
439 CHECK
440 );
441
442 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call)
443 // Preserve oop return value across possible gc points
444 if (oop_result_flag) {
445 thread->set_vm_result_oop(result->get_oop());
446 }
447 }
448 } // Exit JavaCallWrapper (can block - potential return oop must be preserved)
449
450 // Check if a thread stop or suspend should be executed
451 // The following assert was not realistic. Thread.stop can set that bit at any moment.
452 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed");
453
454 // Restore possible oop return
455 if (oop_result_flag) {
456 result->set_oop(thread->vm_result_oop());
457 thread->set_vm_result_oop(nullptr);
458 JNIHandles::destroy_local(value_buffer);
459 }
460 }
461
462
463 //--------------------------------------------------------------------------------------
464 // Implementation of JavaCallArguments
465
466 inline bool is_value_state_indirect_oop(uint state) {
467 assert(state != JavaCallArguments::value_state_oop,
468 "Checking for handles after removal");
469 assert(state < JavaCallArguments::value_state_limit,
470 "Invalid value state %u", state);
471 return state != JavaCallArguments::value_state_primitive;
472 }
473
474 inline oop resolve_indirect_oop(intptr_t value, uint state) {
475 switch (state) {
476 case JavaCallArguments::value_state_handle:
477 {
478 oop* ptr = reinterpret_cast<oop*>(value);
587 case T_INT:
588 case T_FLOAT: // this one also
589 check_single_word(); break;
590 case T_LONG:
591 case T_DOUBLE:
592 check_double_word(); break;
593 case T_ARRAY:
594 case T_OBJECT:
595 check_reference(); break;
596 default:
597 ShouldNotReachHere();
598 }
599 }
600 };
601
602
603 void JavaCallArguments::verify(const methodHandle& method, BasicType return_type) {
604 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed");
605
606 // Treat T_OBJECT and T_ARRAY as the same
607 if (return_type == T_ARRAY) return_type = T_OBJECT;
608
609 // Check that oop information is correct
610 Symbol* signature = method->signature();
611
612 SignatureChekker sc(signature,
613 return_type,
614 method->is_static(),
615 _value_state,
616 _value);
617 }
|