#include "precompiled.hpp"

#include "classfile/systemDictionary.hpp"

#include "classfile/vmSymbols.hpp"

#include "compiler/compileBroker.hpp"

#include "gc_interface/collectedHeap.hpp"

#include "interpreter/interpreter.hpp"

#include "interpreter/interpreterRuntime.hpp"

#include "interpreter/linkResolver.hpp"

#include "interpreter/templateTable.hpp"

#include "memory/oopFactory.hpp"

#include "memory/universe.inline.hpp"

#include "oops/constantPoolOop.hpp"

#include "oops/cpCacheOop.hpp"

#include "oops/instanceKlass.hpp"

#include "oops/methodDataOop.hpp"

#include "oops/objArrayKlass.hpp"

#include "oops/oop.inline.hpp"

#include "oops/symbol.hpp"

#include "prims/jvmtiExport.hpp"

#include "prims/nativeLookup.hpp"

#include "runtime/biasedLocking.hpp"

#include "runtime/compilationPolicy.hpp"

#include "runtime/deoptimization.hpp"

#include "runtime/fieldDescriptor.hpp"

#include "runtime/handles.inline.hpp"

#include "runtime/interfaceSupport.hpp"

#include "runtime/java.hpp"

#include "runtime/jfieldIDWorkaround.hpp"

#include "runtime/osThread.hpp"

#include "runtime/sharedRuntime.hpp"

#include "runtime/stubRoutines.hpp"

#include "runtime/synchronizer.hpp"

#include "runtime/threadCritical.hpp"

#include "utilities/events.hpp"

#ifdef TARGET_ARCH_x86

# include "vm_version_x86.hpp"

#endif

#ifdef TARGET_ARCH_sparc

# include "vm_version_sparc.hpp"

#endif

#ifdef TARGET_ARCH_zero

# include "vm_version_zero.hpp"

#endif

#ifdef TARGET_ARCH_arm

# include "vm_version_arm.hpp"

#endif

#ifdef TARGET_ARCH_ppc

# include "vm_version_ppc.hpp"

#endif

#ifdef COMPILER2

#include "opto/runtime.hpp"

#endif

class UnlockFlagSaver {

private:

JavaThread* _thread;

bool _do_not_unlock;

public:

UnlockFlagSaver(JavaThread* t) {

_thread = t;

_do_not_unlock = t->do_not_unlock_if_synchronized();

t->set_do_not_unlock_if_synchronized(false);

}

~UnlockFlagSaver() {

_thread->set_do_not_unlock_if_synchronized(_do_not_unlock);

}

};

void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread *thread) {

last_frame(thread).interpreter_frame_set_bcp(bcp);

if (ProfileInterpreter) {

// ProfileTraps uses MDOs independently of ProfileInterpreter.

// That is why we must check both ProfileInterpreter and mdo != NULL.

methodDataOop mdo = last_frame(thread).interpreter_frame_method()->method_data();

if (mdo != NULL) {

NEEDS_CLEANUP;

last_frame(thread).interpreter_frame_set_mdp(mdo->bci_to_dp(last_frame(thread).interpreter_frame_bci()));

}

}

}

IRT_ENTRY(void, InterpreterRuntime::ldc(JavaThread* thread, bool wide))

// access constant pool

constantPoolOop pool = method(thread)->constants();

int index = wide ? get_index_u2(thread, Bytecodes::_ldc_w) : get_index_u1(thread, Bytecodes::_ldc);

constantTag tag = pool->tag_at(index);

if (tag.is_unresolved_klass() || tag.is_klass()) {

klassOop klass = pool->klass_at(index, CHECK);

oop java_class = klass->java_mirror();

thread->set_vm_result(java_class);

} else {

#ifdef ASSERT

// If we entered this runtime routine, we believed the tag contained

// an unresolved string, an unresolved class or a resolved class.

// However, another thread could have resolved the unresolved string

// or class by the time we go there.

assert(tag.is_unresolved_string()|| tag.is_string(), "expected string");

#endif

oop s_oop = pool->string_at(index, CHECK);

thread->set_vm_result(s_oop);

}

IRT_ENTRY(void, InterpreterRuntime::resolve_ldc(JavaThread* thread, Bytecodes::Code bytecode)) {

assert(bytecode == Bytecodes::_fast_aldc ||

bytecode == Bytecodes::_fast_aldc_w, "wrong bc");

ResourceMark rm(thread);

methodHandle m (thread, method(thread));

Bytecode_loadconstant ldc(m, bci(thread));

oop result = ldc.resolve_constant(CHECK);

#ifdef ASSERT

{

// The bytecode wrappers aren't GC-safe so construct a new one

Bytecode_loadconstant ldc2(m, bci(thread));

ConstantPoolCacheEntry* cpce = m->constants()->cache()->entry_at(ldc2.cache_index());

assert(result == cpce->f1_as_instance(), "expected result for assembly code");

}

#endif

}

IRT_ENTRY(void, InterpreterRuntime::_new(JavaThread* thread, constantPoolOopDesc* pool, int index))

klassOop k_oop = pool->klass_at(index, CHECK);

instanceKlassHandle klass (THREAD, k_oop);

// Make sure we are not instantiating an abstract klass

klass->check_valid_for_instantiation(true, CHECK);

// Make sure klass is initialized

klass->initialize(CHECK);

// At this point the class may not be fully initialized

// because of recursive initialization. If it is fully

// initialized & has_finalized is not set, we rewrite

// it into its fast version (Note: no locking is needed

// here since this is an atomic byte write and can be

// done more than once).

//

// Note: In case of classes with has_finalized we don't

// rewrite since that saves us an extra check in

// the fast version which then would call the

// slow version anyway (and do a call back into

// Java).

// If we have a breakpoint, then we don't rewrite

// because the _breakpoint bytecode would be lost.

oop obj = klass->allocate_instance(CHECK);

thread->set_vm_result(obj);

IRT_ENTRY(void, InterpreterRuntime::newarray(JavaThread* thread, BasicType type, jint size))

oop obj = oopFactory::new_typeArray(type, size, CHECK);

thread->set_vm_result(obj);

IRT_ENTRY(void, InterpreterRuntime::anewarray(JavaThread* thread, constantPoolOopDesc* pool, int index, jint size))

// Note: no oopHandle for pool & klass needed since they are not used

// anymore after new_objArray() and no GC can happen before.

// (This may have to change if this code changes!)

klassOop klass = pool->klass_at(index, CHECK);

objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK);

thread->set_vm_result(obj);

IRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* thread, jint* first_size_address))

// We may want to pass in more arguments - could make this slightly faster

constantPoolOop constants = method(thread)->constants();

int i = get_index_u2(thread, Bytecodes::_multianewarray);

klassOop klass = constants->klass_at(i, CHECK);

int nof_dims = number_of_dimensions(thread);

assert(oop(klass)->is_klass(), "not a class");

assert(nof_dims >= 1, "multianewarray rank must be nonzero");

// We must create an array of jints to pass to multi_allocate.

ResourceMark rm(thread);

const int small_dims = 10;

jint dim_array[small_dims];

jint *dims = &dim_array[0];

if (nof_dims > small_dims) {

dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims);

}

for (int index = 0; index < nof_dims; index++) {

// offset from first_size_address is addressed as local[index]

int n = Interpreter::local_offset_in_bytes(index)/jintSize;

dims[index] = first_size_address[n];

}

oop obj = arrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK);

thread->set_vm_result(obj);

IRT_ENTRY(void, InterpreterRuntime::register_finalizer(JavaThread* thread, oopDesc* obj))

assert(obj->is_oop(), "must be a valid oop");

assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise");

instanceKlass::register_finalizer(instanceOop(obj), CHECK);

IRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* thread))

// Force resolving; quicken the bytecode

int which = get_index_u2(thread, Bytecodes::_checkcast);

constantPoolOop cpool = method(thread)->constants();

// We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded

// program we might have seen an unquick'd bytecode in the interpreter but have another

// thread quicken the bytecode before we get here.

// assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" );

klassOop klass = cpool->klass_at(which, CHECK);

thread->set_vm_result(klass);

void InterpreterRuntime::note_trap(JavaThread* thread, int reason, TRAPS) {

assert(ProfileTraps, "call me only if profiling");

methodHandle trap_method(thread, method(thread));

if (trap_method.not_null()) {

methodDataHandle trap_mdo(thread, trap_method->method_data());

if (trap_mdo.is_null()) {

methodOopDesc::build_interpreter_method_data(trap_method, THREAD);

if (HAS_PENDING_EXCEPTION) {

assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here");

CLEAR_PENDING_EXCEPTION;

}

trap_mdo = methodDataHandle(thread, trap_method->method_data());

// and fall through...

}

if (trap_mdo.not_null()) {

// Update per-method count of trap events. The interpreter

// is updating the MDO to simulate the effect of compiler traps.

int trap_bci = trap_method->bci_from(bcp(thread));

Deoptimization::update_method_data_from_interpreter(trap_mdo, trap_bci, reason);

}

}

}

static Handle get_preinitialized_exception(klassOop k, TRAPS) {

// get klass

instanceKlass* klass = instanceKlass::cast(k);

assert(klass->is_initialized(),

"this klass should have been initialized during VM initialization");

// create instance - do not call constructor since we may have no

// (java) stack space left (should assert constructor is empty)

Handle exception;

oop exception_oop = klass->allocate_instance(CHECK_(exception));

exception = Handle(THREAD, exception_oop);

if (StackTraceInThrowable) {

java_lang_Throwable::fill_in_stack_trace(exception);

}

return exception;

}

IRT_ENTRY(void, InterpreterRuntime::throw_StackOverflowError(JavaThread* thread))

Handle exception = get_preinitialized_exception(

SystemDictionary::StackOverflowError_klass(),

CHECK);

THROW_HANDLE(exception);

IRT_ENTRY(void, InterpreterRuntime::create_exception(JavaThread* thread, char* name, char* message))

// lookup exception klass

TempNewSymbol s = SymbolTable::new_symbol(name, CHECK);

if (ProfileTraps) {

if (s == vmSymbols::java_lang_ArithmeticException()) {

note_trap(thread, Deoptimization::Reason_div0_check, CHECK);

} else if (s == vmSymbols::java_lang_NullPointerException()) {

note_trap(thread, Deoptimization::Reason_null_check, CHECK);

}

}

// create exception

Handle exception = Exceptions::new_exception(thread, s, message);

thread->set_vm_result(exception());

IRT_ENTRY(void, InterpreterRuntime::create_klass_exception(JavaThread* thread, char* name, oopDesc* obj))

ResourceMark rm(thread);

const char* klass_name = Klass::cast(obj->klass())->external_name();

// lookup exception klass

TempNewSymbol s = SymbolTable::new_symbol(name, CHECK);

if (ProfileTraps) {

note_trap(thread, Deoptimization::Reason_class_check, CHECK);

}

// create exception, with klass name as detail message

Handle exception = Exceptions::new_exception(thread, s, klass_name);

thread->set_vm_result(exception());

IRT_ENTRY(void, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index))

char message[jintAsStringSize];

// lookup exception klass

TempNewSymbol s = SymbolTable::new_symbol(name, CHECK);

if (ProfileTraps) {

note_trap(thread, Deoptimization::Reason_range_check, CHECK);

}

// create exception

sprintf(message, "%d", index);

THROW_MSG(s, message);

IRT_ENTRY(void, InterpreterRuntime::throw_ClassCastException(

JavaThread* thread, oopDesc* obj))

ResourceMark rm(thread);

char* message = SharedRuntime::generate_class_cast_message(

thread, Klass::cast(obj->klass())->external_name());

if (ProfileTraps) {

note_trap(thread, Deoptimization::Reason_class_check, CHECK);

}

// create exception

THROW_MSG(vmSymbols::java_lang_ClassCastException(), message);

IRT_ENTRY(address, InterpreterRuntime::exception_handler_for_exception(JavaThread* thread, oopDesc* exception))

Handle h_exception(thread, exception);

methodHandle h_method (thread, method(thread));

constantPoolHandle h_constants(thread, h_method->constants());

bool should_repeat;

int handler_bci;

int current_bci = bci(thread);

// Need to do this check first since when _do_not_unlock_if_synchronized

// is set, we don't want to trigger any classloading which may make calls

// into java, or surprisingly find a matching exception handler for bci 0

// since at this moment the method hasn't been "officially" entered yet.

if (thread->do_not_unlock_if_synchronized()) {

ResourceMark rm;

assert(current_bci == 0, "bci isn't zero for do_not_unlock_if_synchronized");

thread->set_vm_result(exception);

#ifdef CC_INTERP

return (address) -1;

#else

return Interpreter::remove_activation_entry();

#endif

}

do {

should_repeat = false;

// assertions

#ifdef ASSERT

assert(h_exception.not_null(), "NULL exceptions should be handled by athrow");

assert(h_exception->is_oop(), "just checking");

// Check that exception is a subclass of Throwable, otherwise we have a VerifyError

if (!(h_exception->is_a(SystemDictionary::Throwable_klass()))) {

if (ExitVMOnVerifyError) vm_exit(-1);

ShouldNotReachHere();

}

#endif

// tracing

if (TraceExceptions) {

ttyLocker ttyl;

ResourceMark rm(thread);

tty->print_cr("Exception <%s> (" INTPTR_FORMAT ")", h_exception->print_value_string(), (address)h_exception());

tty->print_cr(" thrown in interpreter method <%s>", h_method->print_value_string());

tty->print_cr(" at bci %d for thread " INTPTR_FORMAT, current_bci, thread);

}

// for AbortVMOnException flag

NOT_PRODUCT(Exceptions::debug_check_abort(h_exception));

// exception handler lookup

KlassHandle h_klass(THREAD, h_exception->klass());

handler_bci = methodOopDesc::fast_exception_handler_bci_for(h_method, h_klass, current_bci, THREAD);

if (HAS_PENDING_EXCEPTION) {

// We threw an exception while trying to find the exception handler.

// Transfer the new exception to the exception handle which will

// be set into thread local storage, and do another lookup for an

// exception handler for this exception, this time starting at the

// BCI of the exception handler which caused the exception to be

// thrown (bug 4307310).

h_exception = Handle(THREAD, PENDING_EXCEPTION);

CLEAR_PENDING_EXCEPTION;

if (handler_bci >= 0) {

current_bci = handler_bci;

should_repeat = true;

}

}

} while (should_repeat == true);

// notify JVMTI of an exception throw; JVMTI will detect if this is a first

// time throw or a stack unwinding throw and accordingly notify the debugger

if (JvmtiExport::can_post_on_exceptions()) {

JvmtiExport::post_exception_throw(thread, h_method(), bcp(thread), h_exception());

}

#ifdef CC_INTERP

address continuation = (address)(intptr_t) handler_bci;

#else

address continuation = NULL;

#endif

address handler_pc = NULL;

if (handler_bci < 0 || !thread->reguard_stack((address) &continuation)) {

// Forward exception to callee (leaving bci/bcp untouched) because (a) no

// handler in this method, or (b) after a stack overflow there is not yet

// enough stack space available to reprotect the stack.

#ifndef CC_INTERP

continuation = Interpreter::remove_activation_entry();

#endif

// Count this for compilation purposes

h_method->interpreter_throwout_increment();

} else {

// handler in this method => change bci/bcp to handler bci/bcp and continue there

handler_pc = h_method->code_base() + handler_bci;

#ifndef CC_INTERP

set_bcp_and_mdp(handler_pc, thread);

continuation = Interpreter::dispatch_table(vtos)[*handler_pc];

#endif

}

// notify debugger of an exception catch

// (this is good for exceptions caught in native methods as well)

if (JvmtiExport::can_post_on_exceptions()) {

JvmtiExport::notice_unwind_due_to_exception(thread, h_method(), handler_pc, h_exception(), (handler_pc != NULL));

}

thread->set_vm_result(h_exception());

return continuation;

IRT_ENTRY(void, InterpreterRuntime::throw_pending_exception(JavaThread* thread))

assert(thread->has_pending_exception(), "must only ne called if there's an exception pending");

// nothing to do - eventually we should remove this code entirely (see comments @ call sites)

IRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodError(JavaThread* thread))

THROW(vmSymbols::java_lang_AbstractMethodError());

IRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* thread))

THROW(vmSymbols::java_lang_IncompatibleClassChangeError());

IRT_ENTRY(void, InterpreterRuntime::resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode))

// resolve field

FieldAccessInfo info;

constantPoolHandle pool(thread, method(thread)->constants());

bool is_put = (bytecode == Bytecodes::_putfield || bytecode == Bytecodes::_putstatic);

bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic);

{

JvmtiHideSingleStepping jhss(thread);

LinkResolver::resolve_field(info, pool, get_index_u2_cpcache(thread, bytecode),

bytecode, false, CHECK);

} // end JvmtiHideSingleStepping

// check if link resolution caused cpCache to be updated

if (already_resolved(thread)) return;

// compute auxiliary field attributes

TosState state = as_TosState(info.field_type());

// We need to delay resolving put instructions on final fields

// until we actually invoke one. This is required so we throw

// exceptions at the correct place. If we do not resolve completely

// in the current pass, leaving the put_code set to zero will

// cause the next put instruction to reresolve.

Bytecodes::Code put_code = (Bytecodes::Code)0;

// We also need to delay resolving getstatic instructions until the

// class is intitialized. This is required so that access to the static

// field will call the initialization function every time until the class

// is completely initialized ala. in 2.17.5 in JVM Specification.

instanceKlass *klass = instanceKlass::cast(info.klass()->as_klassOop());

bool uninitialized_static = ((bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic) &&

!klass->is_initialized());

Bytecodes::Code get_code = (Bytecodes::Code)0;

if (!uninitialized_static) {

get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield);

if (is_put || !info.access_flags().is_final()) {

put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield);

}

}

cache_entry(thread)->set_field(

get_code,

put_code,

info.klass(),

info.field_index(),

info.field_offset(),

state,

info.access_flags().is_final(),

info.access_flags().is_volatile()

);

static void trace_locking(Handle& h_locking_obj, bool is_locking) {

ObjectSynchronizer::trace_locking(h_locking_obj, false, true, is_locking);

}

IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem))

#ifdef ASSERT

thread->last_frame().interpreter_frame_verify_monitor(elem);

#endif

if (PrintBiasedLockingStatistics) {

Atomic::inc(BiasedLocking::slow_path_entry_count_addr());

}

Handle h_obj(thread, elem->obj());

assert(Universe::heap()->is_in_reserved_or_null(h_obj()),

"must be NULL or an object");

if (UseBiasedLocking) {

// Retry fast entry if bias is revoked to avoid unnecessary inflation

ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK);

} else {

ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK);

}

assert(Universe::heap()->is_in_reserved_or_null(elem->obj()),

"must be NULL or an object");

#ifdef ASSERT

thread->last_frame().interpreter_frame_verify_monitor(elem);

#endif

IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem))

#ifdef ASSERT

thread->last_frame().interpreter_frame_verify_monitor(elem);

#endif

Handle h_obj(thread, elem->obj());

assert(Universe::heap()->is_in_reserved_or_null(h_obj()),

"must be NULL or an object");

if (elem == NULL || h_obj()->is_unlocked()) {

THROW(vmSymbols::java_lang_IllegalMonitorStateException());

}

ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread);

// Free entry. This must be done here, since a pending exception might be installed on

// exit. If it is not cleared, the exception handling code will try to unlock the monitor again.

elem->set_obj(NULL);

#ifdef ASSERT

thread->last_frame().interpreter_frame_verify_monitor(elem);

#endif

IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread))

THROW(vmSymbols::java_lang_IllegalMonitorStateException());

IRT_ENTRY(void, InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* thread))

// Returns an illegal exception to install into the current thread. The

// pending_exception flag is cleared so normal exception handling does not

// trigger. Any current installed exception will be overwritten. This

// method will be called during an exception unwind.

assert(!HAS_PENDING_EXCEPTION, "no pending exception");

Handle exception(thread, thread->vm_result());

assert(exception() != NULL, "vm result should be set");

thread->set_vm_result(NULL); // clear vm result before continuing (may cause memory leaks and assert failures)

if (!exception->is_a(SystemDictionary::ThreadDeath_klass())) {

exception = get_preinitialized_exception(

SystemDictionary::IllegalMonitorStateException_klass(),

CATCH);

}

thread->set_vm_result(exception());

IRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp))

return method->orig_bytecode_at(method->bci_from(bcp));

IRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* thread, methodOopDesc* method, address bcp, Bytecodes::Code new_code))

method->set_orig_bytecode_at(method->bci_from(bcp), new_code);

IRT_ENTRY(void, InterpreterRuntime::_breakpoint(JavaThread* thread, methodOopDesc* method, address bcp))

JvmtiExport::post_raw_breakpoint(thread, method, bcp);

IRT_ENTRY(void, InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode)) {

// extract receiver from the outgoing argument list if necessary

Handle receiver(thread, NULL);

if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface) {

ResourceMark rm(thread);

methodHandle m (thread, method(thread));

Bytecode_invoke call(m, bci(thread));

Symbol* signature = call.signature();

receiver = Handle(thread,

thread->last_frame().interpreter_callee_receiver(signature));

assert(Universe::heap()->is_in_reserved_or_null(receiver()),

"sanity check");

assert(receiver.is_null() ||

Universe::heap()->is_in_reserved(receiver->klass()),

"sanity check");

}

// resolve method

CallInfo info;

constantPoolHandle pool(thread, method(thread)->constants());

{

JvmtiHideSingleStepping jhss(thread);

LinkResolver::resolve_invoke(info, receiver, pool,

get_index_u2_cpcache(thread, bytecode), bytecode, CHECK);

if (JvmtiExport::can_hotswap_or_post_breakpoint()) {

int retry_count = 0;

while (info.resolved_method()->is_old()) {

// It is very unlikely that method is redefined more than 100 times

// in the middle of resolve. If it is looping here more than 100 times

// means then there could be a bug here.

guarantee((retry_count++ < 100),

"Could not resolve to latest version of redefined method");

// method is redefined in the middle of resolve so re-try.

LinkResolver::resolve_invoke(info, receiver, pool,

get_index_u2_cpcache(thread, bytecode), bytecode, CHECK);

}

}

} // end JvmtiHideSingleStepping

// check if link resolution caused cpCache to be updated

if (already_resolved(thread)) return;

if (bytecode == Bytecodes::_invokeinterface) {

if (TraceItables && Verbose) {

ResourceMark rm(thread);

tty->print_cr("Resolving: klass: %s to method: %s", info.resolved_klass()->name()->as_C_string(), info.resolved_method()->name()->as_C_string());

}

if (info.resolved_method()->method_holder() ==

SystemDictionary::Object_klass()) {

// NOTE: THIS IS A FIX FOR A CORNER CASE in the JVM spec

// (see also cpCacheOop.cpp for details)

methodHandle rm = info.resolved_method();

assert(rm->is_final() || info.has_vtable_index(),

"should have been set already");

cache_entry(thread)->set_method(bytecode, rm, info.vtable_index());

} else {

// Setup itable entry

int index = klassItable::compute_itable_index(info.resolved_method()());

cache_entry(thread)->set_interface_call(info.resolved_method(), index);

}

} else {

cache_entry(thread)->set_method(

bytecode,

info.resolved_method(),

info.vtable_index());

}

}

IRT_ENTRY(void, InterpreterRuntime::resolve_invokehandle(JavaThread* thread)) {

assert(EnableInvokeDynamic, "");

const Bytecodes::Code bytecode = Bytecodes::_invokehandle;

// resolve method

CallInfo info;

constantPoolHandle pool(thread, method(thread)->constants());

{

JvmtiHideSingleStepping jhss(thread);

LinkResolver::resolve_invoke(info, Handle(), pool,

get_index_u2_cpcache(thread, bytecode), bytecode, CHECK);

} // end JvmtiHideSingleStepping

cache_entry(thread)->set_method_handle(

pool,

info.resolved_method(),

info.resolved_appendix(),

info.resolved_method_type());

}

IRT_ENTRY(void, InterpreterRuntime::resolve_invokedynamic(JavaThread* thread)) {

assert(EnableInvokeDynamic, "");

const Bytecodes::Code bytecode = Bytecodes::_invokedynamic;

//TO DO: consider passing BCI to Java.

// int caller_bci = method(thread)->bci_from(bcp(thread));

// resolve method

CallInfo info;

constantPoolHandle pool(thread, method(thread)->constants());

int index = get_index_u4(thread, bytecode);

{

JvmtiHideSingleStepping jhss(thread);

LinkResolver::resolve_invoke(info, Handle(), pool,

index, bytecode, CHECK);

} // end JvmtiHideSingleStepping

pool->cache()->secondary_entry_at(index)->set_dynamic_call(

pool,

info.resolved_method(),

info.resolved_appendix(),

info.resolved_method_type());

}

nmethod* InterpreterRuntime::frequency_counter_overflow(JavaThread* thread, address branch_bcp) {

nmethod* nm = frequency_counter_overflow_inner(thread, branch_bcp);

assert(branch_bcp != NULL || nm == NULL, "always returns null for non OSR requests");

if (branch_bcp != NULL && nm != NULL) {

// This was a successful request for an OSR nmethod. Because

// frequency_counter_overflow_inner ends with a safepoint check,

// nm could have been unloaded so look it up again. It's unsafe

// to examine nm directly since it might have been freed and used

// for something else.

frame fr = thread->last_frame();

methodOop method = fr.interpreter_frame_method();

int bci = method->bci_from(fr.interpreter_frame_bcp());

nm = method->lookup_osr_nmethod_for(bci, CompLevel_none, false);

}

#ifndef PRODUCT

if (TraceOnStackReplacement) {

if (nm != NULL) {

tty->print("OSR entry @ pc: " INTPTR_FORMAT ": ", nm->osr_entry());

nm->print();

}

}

#endif

return nm;

}

IRT_ENTRY(nmethod*,

InterpreterRuntime::frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp))

// use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized

// flag, in case this method triggers classloading which will call into Java.

UnlockFlagSaver fs(thread);

frame fr = thread->last_frame();

assert(fr.is_interpreted_frame(), "must come from interpreter");

methodHandle method(thread, fr.interpreter_frame_method());

const int branch_bci = branch_bcp != NULL ? method->bci_from(branch_bcp) : InvocationEntryBci;

const int bci = branch_bcp != NULL ? method->bci_from(fr.interpreter_frame_bcp()) : InvocationEntryBci;

assert(!HAS_PENDING_EXCEPTION, "Should not have any exceptions pending");

nmethod* osr_nm = CompilationPolicy::policy()->event(method, method, branch_bci, bci, CompLevel_none, NULL, thread);

assert(!HAS_PENDING_EXCEPTION, "Event handler should not throw any exceptions");

if (osr_nm != NULL) {

// We may need to do on-stack replacement which requires that no

// monitors in the activation are biased because their

// BasicObjectLocks will need to migrate during OSR. Force

// unbiasing of all monitors in the activation now (even though

// the OSR nmethod might be invalidated) because we don't have a

// safepoint opportunity later once the migration begins.

if (UseBiasedLocking) {

ResourceMark rm;

GrowableArray<Handle>* objects_to_revoke = new GrowableArray<Handle>();

for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end();

kptr < fr.interpreter_frame_monitor_begin();

kptr = fr.next_monitor_in_interpreter_frame(kptr) ) {

if( kptr->obj() != NULL ) {

objects_to_revoke->append(Handle(THREAD, kptr->obj()));

}

}

BiasedLocking::revoke(objects_to_revoke);

}

}

return osr_nm;

IRT_LEAF(jint, InterpreterRuntime::bcp_to_di(methodOopDesc* method, address cur_bcp))

assert(ProfileInterpreter, "must be profiling interpreter");

int bci = method->bci_from(cur_bcp);

methodDataOop mdo = method->method_data();

if (mdo == NULL) return 0;

return mdo->bci_to_di(bci);

IRT_ENTRY(void, InterpreterRuntime::profile_method(JavaThread* thread))

// use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized

// flag, in case this method triggers classloading which will call into Java.

UnlockFlagSaver fs(thread);

assert(ProfileInterpreter, "must be profiling interpreter");

frame fr = thread->last_frame();

assert(fr.is_interpreted_frame(), "must come from interpreter");

methodHandle method(thread, fr.interpreter_frame_method());

methodOopDesc::build_interpreter_method_data(method, THREAD);

if (HAS_PENDING_EXCEPTION) {

assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here");

CLEAR_PENDING_EXCEPTION;

// and fall through...

}

#ifdef ASSERT

IRT_LEAF(void, InterpreterRuntime::verify_mdp(methodOopDesc* method, address bcp, address mdp))

assert(ProfileInterpreter, "must be profiling interpreter");

methodDataOop mdo = method->method_data();

assert(mdo != NULL, "must not be null");

int bci = method->bci_from(bcp);

address mdp2 = mdo->bci_to_dp(bci);

if (mdp != mdp2) {

ResourceMark rm;

ResetNoHandleMark rnm; // In a LEAF entry.

HandleMark hm;

tty->print_cr("FAILED verify : actual mdp %p expected mdp %p @ bci %d", mdp, mdp2, bci);

int current_di = mdo->dp_to_di(mdp);

int expected_di = mdo->dp_to_di(mdp2);

tty->print_cr(" actual di %d expected di %d", current_di, expected_di);

int expected_approx_bci = mdo->data_at(expected_di)->bci();

int approx_bci = -1;

if (current_di >= 0) {

approx_bci = mdo->data_at(current_di)->bci();

}

tty->print_cr(" actual bci is %d expected bci %d", approx_bci, expected_approx_bci);

mdo->print_on(tty);

method->print_codes();

}

assert(mdp == mdp2, "wrong mdp");

#endif // ASSERT

IRT_ENTRY(void, InterpreterRuntime::update_mdp_for_ret(JavaThread* thread, int return_bci))

assert(ProfileInterpreter, "must be profiling interpreter");

ResourceMark rm(thread);

HandleMark hm(thread);

frame fr = thread->last_frame();

assert(fr.is_interpreted_frame(), "must come from interpreter");

methodDataHandle h_mdo(thread, fr.interpreter_frame_method()->method_data());

// Grab a lock to ensure atomic access to setting the return bci and

// the displacement. This can block and GC, invalidating all naked oops.

MutexLocker ml(RetData_lock);

// ProfileData is essentially a wrapper around a derived oop, so we

// need to take the lock before making any ProfileData structures.

ProfileData* data = h_mdo->data_at(h_mdo->dp_to_di(fr.interpreter_frame_mdp()));

RetData* rdata = data->as_RetData();

address new_mdp = rdata->fixup_ret(return_bci, h_mdo);

fr.interpreter_frame_set_mdp(new_mdp);

IRT_ENTRY(void, InterpreterRuntime::at_safepoint(JavaThread* thread))

// We used to need an explict preserve_arguments here for invoke bytecodes. However,

// stack traversal automatically takes care of preserving arguments for invoke, so

// this is no longer needed.

// IRT_END does an implicit safepoint check, hence we are guaranteed to block

// if this is called during a safepoint

if (JvmtiExport::should_post_single_step()) {

// We are called during regular safepoints and when the VM is

// single stepping. If any thread is marked for single stepping,

// then we may have JVMTI work to do.

JvmtiExport::at_single_stepping_point(thread, method(thread), bcp(thread));

}

IRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread *thread, oopDesc* obj,

ConstantPoolCacheEntry *cp_entry))

// check the access_flags for the field in the klass

instanceKlass* ik = instanceKlass::cast(java_lang_Class::as_klassOop(cp_entry->f1_as_klass_mirror()));

int index = cp_entry->field_index();

if ((ik->field_access_flags(index) & JVM_ACC_FIELD_ACCESS_WATCHED) == 0) return;

switch(cp_entry->flag_state()) {

case btos: // fall through

case ctos: // fall through

case stos: // fall through

case itos: // fall through

case ftos: // fall through

case ltos: // fall through

case dtos: // fall through

case atos: break;

default: ShouldNotReachHere(); return;

}

bool is_static = (obj == NULL);

HandleMark hm(thread);

Handle h_obj;

if (!is_static) {

// non-static field accessors have an object, but we need a handle

h_obj = Handle(thread, obj);

}

instanceKlassHandle h_cp_entry_f1(thread, java_lang_Class::as_klassOop(cp_entry->f1_as_klass_mirror()));

jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_cp_entry_f1, cp_entry->f2_as_index(), is_static);

JvmtiExport::post_field_access(thread, method(thread), bcp(thread), h_cp_entry_f1, h_obj, fid);

IRT_ENTRY(void, InterpreterRuntime::post_field_modification(JavaThread *thread,

oopDesc* obj, ConstantPoolCacheEntry *cp_entry, jvalue *value))

klassOop k = java_lang_Class::as_klassOop(cp_entry->f1_as_klass_mirror());

// check the access_flags for the field in the klass

instanceKlass* ik = instanceKlass::cast(k);

int index = cp_entry->field_index();

// bail out if field modifications are not watched

if ((ik->field_access_flags(index) & JVM_ACC_FIELD_MODIFICATION_WATCHED) == 0) return;

char sig_type = '\0';

switch(cp_entry->flag_state()) {

case btos: sig_type = 'Z'; break;

case ctos: sig_type = 'C'; break;

case stos: sig_type = 'S'; break;

case itos: sig_type = 'I'; break;

case ftos: sig_type = 'F'; break;

case atos: sig_type = 'L'; break;

case ltos: sig_type = 'J'; break;

case dtos: sig_type = 'D'; break;

default: ShouldNotReachHere(); return;

}

bool is_static = (obj == NULL);

HandleMark hm(thread);

instanceKlassHandle h_klass(thread, k);

jfieldID fid = jfieldIDWorkaround::to_jfieldID(h_klass, cp_entry->f2_as_index(), is_static);

jvalue fvalue;

#ifdef _LP64

fvalue = *value;

#else

// Long/double values are stored unaligned and also noncontiguously with

// tagged stacks. We can't just do a simple assignment even in the non-

// J/D cases because a C++ compiler is allowed to assume that a jvalue is

// 8-byte aligned, and interpreter stack slots are only 4-byte aligned.

// We assume that the two halves of longs/doubles are stored in interpreter

// stack slots in platform-endian order.

jlong_accessor u;

jint* newval = (jint*)value;

u.words[0] = newval[0];

u.words[1] = newval[Interpreter::stackElementWords]; // skip if tag

fvalue.j = u.long_value;

#endif // _LP64

Handle h_obj;

if (!is_static) {

// non-static field accessors have an object, but we need a handle

h_obj = Handle(thread, obj);

}

JvmtiExport::post_raw_field_modification(thread, method(thread), bcp(thread), h_klass, h_obj,

fid, sig_type, &fvalue);

IRT_ENTRY(void, InterpreterRuntime::post_method_entry(JavaThread *thread))

JvmtiExport::post_method_entry(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread));

IRT_ENTRY(void, InterpreterRuntime::post_method_exit(JavaThread *thread))

JvmtiExport::post_method_exit(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread));

IRT_LEAF(int, InterpreterRuntime::interpreter_contains(address pc))

{

return (Interpreter::contains(pc) ? 1 : 0);

}

address SignatureHandlerLibrary::set_handler_blob() {

BufferBlob* handler_blob = BufferBlob::create("native signature handlers", blob_size);

if (handler_blob == NULL) {

return NULL;

}

address handler = handler_blob->code_begin();

_handler_blob = handler_blob;

_handler = handler;

return handler;

}

void SignatureHandlerLibrary::initialize() {

if (_fingerprints != NULL) {

return;

}

if (set_handler_blob() == NULL) {

vm_exit_out_of_memory(blob_size, "native signature handlers");

}

BufferBlob* bb = BufferBlob::create("Signature Handler Temp Buffer",

SignatureHandlerLibrary::buffer_size);

_buffer = bb->code_begin();

_fingerprints = new(ResourceObj::C_HEAP, mtCode)GrowableArray<uint64_t>(32, true);

_handlers = new(ResourceObj::C_HEAP, mtCode)GrowableArray<address>(32, true);

}

address SignatureHandlerLibrary::set_handler(CodeBuffer* buffer) {

address handler = _handler;

int insts_size = buffer->pure_insts_size();

if (handler + insts_size > _handler_blob->code_end()) {

// get a new handler blob

handler = set_handler_blob();

}

if (handler != NULL) {

memcpy(handler, buffer->insts_begin(), insts_size);

pd_set_handler(handler);

ICache::invalidate_range(handler, insts_size);

_handler = handler + insts_size;

}

return handler;

}

void SignatureHandlerLibrary::add(methodHandle method) {

if (method->signature_handler() == NULL) {

// use slow signature handler if we can't do better

int handler_index = -1;

// check if we can use customized (fast) signature handler

if (UseFastSignatureHandlers && method->size_of_parameters() <= Fingerprinter::max_size_of_parameters) {

// use customized signature handler

MutexLocker mu(SignatureHandlerLibrary_lock);

// make sure data structure is initialized

initialize();

// lookup method signature's fingerprint

uint64_t fingerprint = Fingerprinter(method).fingerprint();

handler_index = _fingerprints->find(fingerprint);

// create handler if necessary

if (handler_index < 0) {

ResourceMark rm;

ptrdiff_t align_offset = (address)

round_to((intptr_t)_buffer, CodeEntryAlignment) - (address)_buffer;

CodeBuffer buffer((address)(_buffer + align_offset),

SignatureHandlerLibrary::buffer_size - align_offset);

InterpreterRuntime::SignatureHandlerGenerator(method, &buffer).generate(fingerprint);

// copy into code heap

address handler = set_handler(&buffer);

if (handler == NULL) {

// use slow signature handler

} else {

// debugging suppport

if (PrintSignatureHandlers) {

tty->cr();

tty->print_cr("argument handler #%d for: %s %s (fingerprint = " UINT64_FORMAT ", %d bytes generated)",

_handlers->length(),

(method->is_static() ? "static" : "receiver"),

method->name_and_sig_as_C_string(),

fingerprint,

buffer.insts_size());

Disassembler::decode(handler, handler + buffer.insts_size());

#ifndef PRODUCT

tty->print_cr(" --- associated result handler ---");

address rh_begin = Interpreter::result_handler(method()->result_type());

address rh_end = rh_begin;

while (*(int*)rh_end != 0) {

rh_end += sizeof(int);

}

Disassembler::decode(rh_begin, rh_end);

#endif

}

// add handler to library

_fingerprints->append(fingerprint);

_handlers->append(handler);

// set handler index

assert(_fingerprints->length() == _handlers->length(), "sanity check");

handler_index = _fingerprints->length() - 1;

}

}

// Set handler under SignatureHandlerLibrary_lock

if (handler_index < 0) {

// use generic signature handler

method->set_signature_handler(Interpreter::slow_signature_handler());

} else {

// set handler

method->set_signature_handler(_handlers->at(handler_index));

}

} else {

CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());

// use generic signature handler

method->set_signature_handler(Interpreter::slow_signature_handler());

}

}

#ifdef ASSERT

int handler_index = -1;

int fingerprint_index = -2;

{

// '_handlers' and '_fingerprints' are 'GrowableArray's and are NOT synchronized

// in any way if accessed from multiple threads. To avoid races with another

// thread which may change the arrays in the above, mutex protected block, we

// have to protect this read access here with the same mutex as well!

MutexLocker mu(SignatureHandlerLibrary_lock);

if (_handlers != NULL) {

handler_index = _handlers->find(method->signature_handler());

fingerprint_index = _fingerprints->find(Fingerprinter(method).fingerprint());

}

}

assert(method->signature_handler() == Interpreter::slow_signature_handler() ||

handler_index == fingerprint_index, "sanity check");

#endif // ASSERT

}

BufferBlob* SignatureHandlerLibrary::_handler_blob = NULL;

address SignatureHandlerLibrary::_handler = NULL;

GrowableArray<uint64_t>* SignatureHandlerLibrary::_fingerprints = NULL;

GrowableArray<address>* SignatureHandlerLibrary::_handlers = NULL;

address SignatureHandlerLibrary::_buffer = NULL;

IRT_ENTRY(void, InterpreterRuntime::prepare_native_call(JavaThread* thread, methodOopDesc* method))

methodHandle m(thread, method);

assert(m->is_native(), "sanity check");

// lookup native function entry point if it doesn't exist

bool in_base_library;

if (!m->has_native_function()) {

NativeLookup::lookup(m, in_base_library, CHECK);

}

// make sure signature handler is installed

SignatureHandlerLibrary::add(m);

// The interpreter entry point checks the signature handler first,

// before trying to fetch the native entry point and klass mirror.

// We must set the signature handler last, so that multiple processors

// preparing the same method will be sure to see non-null entry & mirror.

#if defined(IA32) || defined(AMD64) || defined(ARM)

IRT_LEAF(void, InterpreterRuntime::popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address))

if (src_address == dest_address) {

return;

}

ResetNoHandleMark rnm; // In a LEAF entry.

HandleMark hm;

ResourceMark rm;

frame fr = thread->last_frame();

assert(fr.is_interpreted_frame(), "");

jint bci = fr.interpreter_frame_bci();

methodHandle mh(thread, fr.interpreter_frame_method());

Bytecode_invoke invoke(mh, bci);

ArgumentSizeComputer asc(invoke.signature());

int size_of_arguments = (asc.size() + (invoke.has_receiver() ? 1 : 0)); // receiver

Copy::conjoint_jbytes(src_address, dest_address,

size_of_arguments * Interpreter::stackElementSize);

#endif