1353
1354 // Resolves a call. The compilers generate code for calls that go here
1355 // and are patched with the real destination of the call.
1356 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread,
1357 bool is_virtual,
1358 bool is_optimized, TRAPS) {
1359
1360 ResourceMark rm(thread);
1361 RegisterMap cbl_map(thread, false);
1362 frame caller_frame = thread->last_frame().sender(&cbl_map);
1363
1364 CodeBlob* caller_cb = caller_frame.cb();
1365 guarantee(caller_cb != NULL && caller_cb->is_compiled(), "must be called from compiled method");
1366 CompiledMethod* caller_nm = caller_cb->as_compiled_method_or_null();
1367
1368 // make sure caller is not getting deoptimized
1369 // and removed before we are done with it.
1370 // CLEANUP - with lazy deopt shouldn't need this lock
1371 nmethodLocker caller_lock(caller_nm);
1372
1373 // determine call info & receiver
1374 // note: a) receiver is NULL for static calls
1375 // b) an exception is thrown if receiver is NULL for non-static calls
1376 CallInfo call_info;
1377 Bytecodes::Code invoke_code = Bytecodes::_illegal;
1378 Handle receiver = find_callee_info(thread, invoke_code,
1379 call_info, CHECK_(methodHandle()));
1380 methodHandle callee_method = call_info.selected_method();
1381
1382 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) ||
1383 (!is_virtual && invoke_code == Bytecodes::_invokespecial) ||
1384 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) ||
1385 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) ||
1386 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode");
1387
1388 assert(caller_nm->is_alive() && !caller_nm->is_unloading(), "It should be alive");
1389
1390 #ifndef PRODUCT
1391 // tracing/debugging/statistics
1392 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) :
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1353
1354 // Resolves a call. The compilers generate code for calls that go here
1355 // and are patched with the real destination of the call.
1356 methodHandle SharedRuntime::resolve_sub_helper(JavaThread *thread,
1357 bool is_virtual,
1358 bool is_optimized, TRAPS) {
1359
1360 ResourceMark rm(thread);
1361 RegisterMap cbl_map(thread, false);
1362 frame caller_frame = thread->last_frame().sender(&cbl_map);
1363
1364 CodeBlob* caller_cb = caller_frame.cb();
1365 guarantee(caller_cb != NULL && caller_cb->is_compiled(), "must be called from compiled method");
1366 CompiledMethod* caller_nm = caller_cb->as_compiled_method_or_null();
1367
1368 // make sure caller is not getting deoptimized
1369 // and removed before we are done with it.
1370 // CLEANUP - with lazy deopt shouldn't need this lock
1371 nmethodLocker caller_lock(caller_nm);
1372
1373 if (!is_virtual && !is_optimized) {
1374 SimpleScopeDesc ssd(caller_nm, caller_frame.pc());
1375 Bytecode bc(ssd.method(), ssd.method()->bcp_from(ssd.bci()));
1376 // Substituability test implementation piggy backs on static call resolution
1377 if (bc.code() == Bytecodes::_if_acmpeq || bc.code() == Bytecodes::_if_acmpne) {
1378 SystemDictionary::ValueBootstrapMethods_klass()->initialize(CHECK_NULL);
1379 return SystemDictionary::ValueBootstrapMethods_klass()->find_method(vmSymbols::isSubstitutable_name(), vmSymbols::object_object_boolean_signature());
1380 }
1381 }
1382
1383 // determine call info & receiver
1384 // note: a) receiver is NULL for static calls
1385 // b) an exception is thrown if receiver is NULL for non-static calls
1386 CallInfo call_info;
1387 Bytecodes::Code invoke_code = Bytecodes::_illegal;
1388 Handle receiver = find_callee_info(thread, invoke_code,
1389 call_info, CHECK_(methodHandle()));
1390 methodHandle callee_method = call_info.selected_method();
1391
1392 assert((!is_virtual && invoke_code == Bytecodes::_invokestatic ) ||
1393 (!is_virtual && invoke_code == Bytecodes::_invokespecial) ||
1394 (!is_virtual && invoke_code == Bytecodes::_invokehandle ) ||
1395 (!is_virtual && invoke_code == Bytecodes::_invokedynamic) ||
1396 ( is_virtual && invoke_code != Bytecodes::_invokestatic ), "inconsistent bytecode");
1397
1398 assert(caller_nm->is_alive() && !caller_nm->is_unloading(), "It should be alive");
1399
1400 #ifndef PRODUCT
1401 // tracing/debugging/statistics
1402 int *addr = (is_optimized) ? (&_resolve_opt_virtual_ctr) :
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