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jvmciCompilerToVM.cpp
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jvmciCompilerToVM.cpp
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/*
* Copyright (c) 2011, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include "precompiled.hpp"
#include "classfile/classLoaderData.inline.hpp"
#include "classfile/javaClasses.inline.hpp"
#include "classfile/stringTable.hpp"
#include "classfile/symbolTable.hpp"
#include "classfile/systemDictionary.hpp"
#include "classfile/vmClasses.hpp"
#include "code/scopeDesc.hpp"
#include "compiler/compileBroker.hpp"
#include "compiler/compilerEvent.hpp"
#include "compiler/disassembler.hpp"
#include "compiler/oopMap.hpp"
#include "interpreter/linkResolver.hpp"
#include "interpreter/bytecodeStream.hpp"
#include "jfr/jfrEvents.hpp"
#include "jvmci/jvmciCompilerToVM.hpp"
#include "jvmci/jvmciCodeInstaller.hpp"
#include "jvmci/jvmciRuntime.hpp"
#include "logging/log.hpp"
#include "logging/logTag.hpp"
#include "memory/oopFactory.hpp"
#include "memory/universe.hpp"
#include "oops/constantPool.inline.hpp"
#include "oops/instanceMirrorKlass.hpp"
#include "oops/instanceKlass.inline.hpp"
#include "oops/method.inline.hpp"
#include "oops/typeArrayOop.inline.hpp"
#include "prims/jvmtiExport.hpp"
#include "prims/methodHandles.hpp"
#include "prims/nativeLookup.hpp"
#include "runtime/atomic.hpp"
#include "runtime/deoptimization.hpp"
#include "runtime/fieldDescriptor.inline.hpp"
#include "runtime/frame.inline.hpp"
#include "runtime/globals_extension.hpp"
#include "runtime/interfaceSupport.inline.hpp"
#include "runtime/jniHandles.inline.hpp"
#include "runtime/reflectionUtils.hpp"
#include "runtime/stackFrameStream.inline.hpp"
#include "runtime/timerTrace.hpp"
#include "runtime/vframe_hp.hpp"
#include "runtime/vframe.inline.hpp"
#if INCLUDE_JFR
#include "jfr/jfr.hpp"
#endif
JVMCIKlassHandle::JVMCIKlassHandle(Thread* thread, Klass* klass) {
_thread = thread;
_klass = klass;
if (klass != nullptr) {
_holder = Handle(_thread, klass->klass_holder());
}
}
JVMCIKlassHandle& JVMCIKlassHandle::operator=(Klass* klass) {
_klass = klass;
if (klass != nullptr) {
_holder = Handle(_thread, klass->klass_holder());
}
return *this;
}
static void requireInHotSpot(const char* caller, JVMCI_TRAPS) {
if (!JVMCIENV->is_hotspot()) {
JVMCI_THROW_MSG(IllegalStateException, err_msg("Cannot call %s from JVMCI shared library", caller));
}
}
class JVMCITraceMark : public StackObj {
const char* _msg;
public:
JVMCITraceMark(const char* msg) {
_msg = msg;
JVMCI_event_2("Enter %s", _msg);
}
~JVMCITraceMark() {
JVMCI_event_2(" Exit %s", _msg);
}
};
Handle JavaArgumentUnboxer::next_arg(BasicType expectedType) {
assert(_index < _args->length(), "out of bounds");
oop arg=((objArrayOop) (_args))->obj_at(_index++);
assert(expectedType == T_OBJECT || java_lang_boxing_object::is_instance(arg, expectedType), "arg type mismatch");
return Handle(Thread::current(), arg);
}
// Bring the JVMCI compiler thread into the VM state.
#define JVMCI_VM_ENTRY_MARK \
MACOS_AARCH64_ONLY(ThreadWXEnable __wx(WXWrite, thread)); \
ThreadInVMfromNative __tiv(thread); \
HandleMarkCleaner __hm(thread); \
JavaThread* THREAD = thread; \
debug_only(VMNativeEntryWrapper __vew;)
// Native method block that transitions current thread to '_thread_in_vm'.
#define C2V_BLOCK(result_type, name, signature) \
JVMCI_VM_ENTRY_MARK; \
ResourceMark rm; \
JNI_JVMCIENV(JVMCI::compilation_tick(thread), env);
static JavaThread* get_current_thread(bool allow_null=true) {
Thread* thread = Thread::current_or_null_safe();
if (thread == nullptr) {
assert(allow_null, "npe");
return nullptr;
}
return JavaThread::cast(thread);
}
// Entry to native method implementation that transitions
// current thread to '_thread_in_vm'.
#define C2V_VMENTRY(result_type, name, signature) \
JNIEXPORT result_type JNICALL c2v_ ## name signature { \
JavaThread* thread = get_current_thread(); \
if (thread == nullptr) { \
env->ThrowNew(JNIJVMCI::InternalError::clazz(), \
err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
return; \
} \
C2V_BLOCK(result_type, name, signature) \
JVMCITraceMark jtm("CompilerToVM::" #name);
#define C2V_VMENTRY_(result_type, name, signature, result) \
JNIEXPORT result_type JNICALL c2v_ ## name signature { \
JavaThread* thread = get_current_thread(); \
if (thread == nullptr) { \
env->ThrowNew(JNIJVMCI::InternalError::clazz(), \
err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \
return result; \
} \
C2V_BLOCK(result_type, name, signature) \
JVMCITraceMark jtm("CompilerToVM::" #name);
#define C2V_VMENTRY_NULL(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, nullptr)
#define C2V_VMENTRY_0(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, 0)
// Entry to native method implementation that does not transition
// current thread to '_thread_in_vm'.
#define C2V_VMENTRY_PREFIX(result_type, name, signature) \
JNIEXPORT result_type JNICALL c2v_ ## name signature { \
JavaThread* thread = get_current_thread();
#define C2V_END }
#define JNI_THROW(caller, name, msg) do { \
jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg); \
if (__throw_res != JNI_OK) { \
tty->print_cr("Throwing " #name " in " caller " returned %d", __throw_res); \
} \
return; \
} while (0);
#define JNI_THROW_(caller, name, msg, result) do { \
jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg); \
if (__throw_res != JNI_OK) { \
tty->print_cr("Throwing " #name " in " caller " returned %d", __throw_res); \
} \
return result; \
} while (0)
jobjectArray readConfiguration0(JNIEnv *env, JVMCI_TRAPS);
C2V_VMENTRY_NULL(jobjectArray, readConfiguration, (JNIEnv* env))
jobjectArray config = readConfiguration0(env, JVMCI_CHECK_NULL);
return config;
}
C2V_VMENTRY_NULL(jobject, getFlagValue, (JNIEnv* env, jobject c2vm, jobject name_handle))
#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();
#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();
JVMCIObject name = JVMCIENV->wrap(name_handle);
if (name.is_null()) {
JVMCI_THROW_NULL(NullPointerException);
}
const char* cstring = JVMCIENV->as_utf8_string(name);
const JVMFlag* flag = JVMFlag::find_declared_flag(cstring);
if (flag == nullptr) {
return c2vm;
}
if (flag->is_bool()) {
jvalue prim;
prim.z = flag->get_bool();
JVMCIObject box = JVMCIENV->create_box(T_BOOLEAN, &prim, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(box);
} else if (flag->is_ccstr()) {
JVMCIObject value = JVMCIENV->create_string(flag->get_ccstr(), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(value);
} else if (flag->is_intx()) {
RETURN_BOXED_LONG(flag->get_intx());
} else if (flag->is_int()) {
RETURN_BOXED_LONG(flag->get_int());
} else if (flag->is_uint()) {
RETURN_BOXED_LONG(flag->get_uint());
} else if (flag->is_uint64_t()) {
RETURN_BOXED_LONG(flag->get_uint64_t());
} else if (flag->is_size_t()) {
RETURN_BOXED_LONG(flag->get_size_t());
} else if (flag->is_uintx()) {
RETURN_BOXED_LONG(flag->get_uintx());
} else if (flag->is_double()) {
RETURN_BOXED_DOUBLE(flag->get_double());
} else {
JVMCI_ERROR_NULL("VM flag %s has unsupported type %s", flag->name(), flag->type_string());
}
#undef RETURN_BOXED_LONG
#undef RETURN_BOXED_DOUBLE
C2V_END
// Macros for argument pairs representing a wrapper object and its wrapped VM pointer
#define ARGUMENT_PAIR(name) jobject name ## _obj, jlong name ## _pointer
#define UNPACK_PAIR(type, name) ((type*) name ## _pointer)
C2V_VMENTRY_NULL(jbyteArray, getBytecode, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
methodHandle method(THREAD, UNPACK_PAIR(Method, method));
int code_size = method->code_size();
jbyte* reconstituted_code = NEW_RESOURCE_ARRAY(jbyte, code_size);
guarantee(method->method_holder()->is_rewritten(), "Method's holder should be rewritten");
// iterate over all bytecodes and replace non-Java bytecodes
for (BytecodeStream s(method); s.next() != Bytecodes::_illegal; ) {
Bytecodes::Code code = s.code();
Bytecodes::Code raw_code = s.raw_code();
int bci = s.bci();
int len = s.instruction_size();
// Restore original byte code.
reconstituted_code[bci] = (jbyte) (s.is_wide()? Bytecodes::_wide : code);
if (len > 1) {
memcpy(reconstituted_code + (bci + 1), s.bcp()+1, len-1);
}
if (len > 1) {
// Restore the big-endian constant pool indexes.
// Cf. Rewriter::scan_method
switch (code) {
case Bytecodes::_getstatic:
case Bytecodes::_putstatic:
case Bytecodes::_getfield:
case Bytecodes::_putfield:
case Bytecodes::_invokevirtual:
case Bytecodes::_invokespecial:
case Bytecodes::_invokestatic:
case Bytecodes::_invokeinterface:
case Bytecodes::_invokehandle: {
int cp_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
break;
}
case Bytecodes::_invokedynamic: {
int cp_index = Bytes::get_native_u4((address) reconstituted_code + (bci + 1));
Bytes::put_Java_u4((address) reconstituted_code + (bci + 1), (u4) cp_index);
break;
}
default:
break;
}
// Not all ldc byte code are rewritten.
switch (raw_code) {
case Bytecodes::_fast_aldc: {
int cpc_index = reconstituted_code[bci + 1] & 0xff;
int cp_index = method->constants()->object_to_cp_index(cpc_index);
assert(cp_index < method->constants()->length(), "sanity check");
reconstituted_code[bci + 1] = (jbyte) cp_index;
break;
}
case Bytecodes::_fast_aldc_w: {
int cpc_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1));
int cp_index = method->constants()->object_to_cp_index(cpc_index);
assert(cp_index < method->constants()->length(), "sanity check");
Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index);
break;
}
default:
break;
}
}
}
JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL);
JVMCIENV->copy_bytes_from(reconstituted_code, result, 0, code_size);
return JVMCIENV->get_jbyteArray(result);
C2V_END
C2V_VMENTRY_0(jint, getExceptionTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
Method* method = UNPACK_PAIR(Method, method);
return method->exception_table_length();
C2V_END
C2V_VMENTRY_0(jlong, getExceptionTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
Method* method = UNPACK_PAIR(Method, method);
if (method->exception_table_length() == 0) {
return 0L;
}
return (jlong) (address) method->exception_table_start();
C2V_END
C2V_VMENTRY_NULL(jobject, asResolvedJavaMethod, (JNIEnv* env, jobject, jobject executable_handle))
requireInHotSpot("asResolvedJavaMethod", JVMCI_CHECK_NULL);
oop executable = JNIHandles::resolve(executable_handle);
oop mirror = nullptr;
int slot = 0;
if (executable->klass() == vmClasses::reflect_Constructor_klass()) {
mirror = java_lang_reflect_Constructor::clazz(executable);
slot = java_lang_reflect_Constructor::slot(executable);
} else {
assert(executable->klass() == vmClasses::reflect_Method_klass(), "wrong type");
mirror = java_lang_reflect_Method::clazz(executable);
slot = java_lang_reflect_Method::slot(executable);
}
Klass* holder = java_lang_Class::as_Klass(mirror);
methodHandle method (THREAD, InstanceKlass::cast(holder)->method_with_idnum(slot));
JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
}
C2V_VMENTRY_NULL(jobject, getResolvedJavaMethod, (JNIEnv* env, jobject, jobject base, jlong offset))
Method* method = nullptr;
JVMCIObject base_object = JVMCIENV->wrap(base);
if (base_object.is_null()) {
method = *((Method**)(offset));
} else {
Handle obj = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
if (obj->is_a(vmClasses::ResolvedMethodName_klass())) {
method = (Method*) (intptr_t) obj->long_field(offset);
} else {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", obj->klass()->external_name()));
}
}
if (method == nullptr) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", JVMCIENV->klass_name(base_object)));
}
assert (method->is_method(), "invalid read");
JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, method), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
}
C2V_VMENTRY_NULL(jobject, getConstantPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass_or_method), jboolean is_klass))
ConstantPool* cp = nullptr;
if (UNPACK_PAIR(address, klass_or_method) == 0) {
JVMCI_THROW_NULL(NullPointerException);
}
if (!is_klass) {
cp = (UNPACK_PAIR(Method, klass_or_method))->constMethod()->constants();
} else {
cp = InstanceKlass::cast(UNPACK_PAIR(Klass, klass_or_method))->constants();
}
JVMCIObject result = JVMCIENV->get_jvmci_constant_pool(constantPoolHandle(THREAD, cp), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
}
C2V_VMENTRY_NULL(jobject, getResolvedJavaType0, (JNIEnv* env, jobject, jobject base, jlong offset, jboolean compressed))
JVMCIKlassHandle klass(THREAD);
JVMCIObject base_object = JVMCIENV->wrap(base);
jlong base_address = 0;
if (base_object.is_non_null() && offset == oopDesc::klass_offset_in_bytes()) {
if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
klass = base_oop->klass();
} else {
assert(false, "What types are we actually expecting here?");
}
} else if (!compressed) {
if (base_object.is_non_null()) {
if (JVMCIENV->isa_HotSpotResolvedJavaMethodImpl(base_object)) {
base_address = (intptr_t) JVMCIENV->asMethod(base_object);
} else if (JVMCIENV->isa_HotSpotConstantPool(base_object)) {
base_address = (intptr_t) JVMCIENV->asConstantPool(base_object);
} else if (JVMCIENV->isa_HotSpotResolvedObjectTypeImpl(base_object)) {
base_address = (intptr_t) JVMCIENV->asKlass(base_object);
} else if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) {
Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL);
if (base_oop->is_a(vmClasses::Class_klass())) {
base_address = cast_from_oop<jlong>(base_oop());
}
}
if (base_address == 0) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException,
err_msg("Unexpected arguments: %s " JLONG_FORMAT " %s", JVMCIENV->klass_name(base_object), offset, compressed ? "true" : "false"));
}
}
klass = *((Klass**) (intptr_t) (base_address + offset));
} else {
JVMCI_THROW_MSG_NULL(IllegalArgumentException,
err_msg("Unexpected arguments: %s " JLONG_FORMAT " %s",
base_object.is_non_null() ? JVMCIENV->klass_name(base_object) : "null",
offset, compressed ? "true" : "false"));
}
assert (klass == nullptr || klass->is_klass(), "invalid read");
JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
}
C2V_VMENTRY_NULL(jobject, findUniqueConcreteMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
methodHandle method (THREAD, UNPACK_PAIR(Method, method));
InstanceKlass* holder = InstanceKlass::cast(UNPACK_PAIR(Klass, klass));
if (holder->is_interface()) {
JVMCI_THROW_MSG_NULL(InternalError, err_msg("Interface %s should be handled in Java code", holder->external_name()));
}
if (method->can_be_statically_bound()) {
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()));
}
methodHandle ucm;
{
MutexLocker locker(Compile_lock);
ucm = methodHandle(THREAD, Dependencies::find_unique_concrete_method(holder, method()));
}
JVMCIObject result = JVMCIENV->get_jvmci_method(ucm, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_NULL(jobject, getImplementor, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
if (!klass->is_interface()) {
THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
err_msg("Expected interface type, got %s", klass->external_name()));
}
InstanceKlass* iklass = InstanceKlass::cast(klass);
JVMCIKlassHandle handle(THREAD, iklass->implementor());
JVMCIObject implementor = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(implementor);
C2V_END
C2V_VMENTRY_0(jboolean, methodIsIgnoredBySecurityStackWalk,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
Method* method = UNPACK_PAIR(Method, method);
return method->is_ignored_by_security_stack_walk();
C2V_END
C2V_VMENTRY_0(jboolean, isCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
Method* method = UNPACK_PAIR(Method, method);
// Skip redefined methods
if (method->is_old()) {
return false;
}
return !method->is_not_compilable(CompLevel_full_optimization);
C2V_END
C2V_VMENTRY_0(jboolean, hasNeverInlineDirective,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
methodHandle method (THREAD, UNPACK_PAIR(Method, method));
return !Inline || CompilerOracle::should_not_inline(method) || method->dont_inline();
C2V_END
C2V_VMENTRY_0(jboolean, shouldInlineMethod,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
methodHandle method (THREAD, UNPACK_PAIR(Method, method));
return CompilerOracle::should_inline(method) || method->force_inline();
C2V_END
C2V_VMENTRY_NULL(jobject, lookupType, (JNIEnv* env, jobject, jstring jname, ARGUMENT_PAIR(accessing_klass), jboolean resolve))
JVMCIObject name = JVMCIENV->wrap(jname);
const char* str = JVMCIENV->as_utf8_string(name);
TempNewSymbol class_name = SymbolTable::new_symbol(str);
if (class_name->utf8_length() <= 1) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Primitive type %s should be handled in Java code", class_name->as_C_string()));
}
JVMCIKlassHandle resolved_klass(THREAD);
Klass* accessing_klass = UNPACK_PAIR(Klass, accessing_klass);
Handle class_loader;
Handle protection_domain;
if (accessing_klass != nullptr) {
class_loader = Handle(THREAD, accessing_klass->class_loader());
protection_domain = Handle(THREAD, accessing_klass->protection_domain());
} else {
// Use the System class loader
class_loader = Handle(THREAD, SystemDictionary::java_system_loader());
JVMCIENV->runtime()->initialize(JVMCI_CHECK_NULL);
}
if (resolve) {
resolved_klass = SystemDictionary::resolve_or_null(class_name, class_loader, protection_domain, CHECK_NULL);
if (resolved_klass == nullptr) {
JVMCI_THROW_MSG_NULL(ClassNotFoundException, str);
}
} else {
if (Signature::has_envelope(class_name)) {
// This is a name from a signature. Strip off the trimmings.
// Call recursive to keep scope of strippedsym.
TempNewSymbol strippedsym = Signature::strip_envelope(class_name);
resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
class_loader,
protection_domain);
} else if (Signature::is_array(class_name)) {
SignatureStream ss(class_name, false);
int ndim = ss.skip_array_prefix();
if (ss.type() == T_OBJECT) {
Symbol* strippedsym = ss.as_symbol();
resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym,
class_loader,
protection_domain);
if (!resolved_klass.is_null()) {
resolved_klass = resolved_klass->array_klass(ndim, CHECK_NULL);
}
} else {
resolved_klass = TypeArrayKlass::cast(Universe::typeArrayKlassObj(ss.type()))->array_klass(ndim, CHECK_NULL);
}
} else {
resolved_klass = SystemDictionary::find_instance_klass(THREAD, class_name,
class_loader,
protection_domain);
}
}
JVMCIObject result = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_NULL(jobject, getArrayType, (JNIEnv* env, jobject, jchar type_char, ARGUMENT_PAIR(klass)))
JVMCIKlassHandle array_klass(THREAD);
Klass* klass = UNPACK_PAIR(Klass, klass);
if (klass == nullptr) {
BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0);
if (type == T_VOID) {
return nullptr;
}
array_klass = Universe::typeArrayKlassObj(type);
if (array_klass == nullptr) {
JVMCI_THROW_MSG_NULL(InternalError, err_msg("No array klass for primitive type %s", type2name(type)));
}
} else {
array_klass = klass->array_klass(CHECK_NULL);
}
JVMCIObject result = JVMCIENV->get_jvmci_type(array_klass, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_NULL(jobject, lookupClass, (JNIEnv* env, jobject, jclass mirror))
requireInHotSpot("lookupClass", JVMCI_CHECK_NULL);
if (mirror == nullptr) {
return nullptr;
}
JVMCIKlassHandle klass(THREAD);
klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
if (klass == nullptr) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Primitive classes are unsupported");
}
JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_NULL(jobject, lookupJClass, (JNIEnv* env, jobject, jlong jclass_value))
if (jclass_value == 0L) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass must not be zero");
}
jclass mirror = reinterpret_cast<jclass>(jclass_value);
// Since the jclass_value is passed as a jlong, we perform additional checks to prevent the caller from accidentally
// sending a value that is not a JNI handle.
if (JNIHandles::handle_type(thread, mirror) == JNIInvalidRefType) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass is not a valid JNI reference");
}
oop obj = JNIHandles::resolve(mirror);
if (!java_lang_Class::is_instance(obj)) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass must be a reference to the Class object");
}
JVMCIKlassHandle klass(THREAD, java_lang_Class::as_Klass(obj));
JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_NULL(jobject, getUncachedStringInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
constantTag tag = cp->tag_at(index);
if (!tag.is_string()) {
JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
}
oop obj = cp->uncached_string_at(index, CHECK_NULL);
return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
C2V_END
C2V_VMENTRY_NULL(jobject, resolvePossiblyCachedConstantInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
oop obj = cp->resolve_possibly_cached_constant_at(index, CHECK_NULL);
constantTag tag = cp->tag_at(index);
if (tag.is_dynamic_constant() || tag.is_dynamic_constant_in_error()) {
if (obj == Universe::the_null_sentinel()) {
return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER());
}
BasicType bt = Signature::basic_type(cp->uncached_signature_ref_at(index));
if (!is_reference_type(bt)) {
if (!is_java_primitive(bt)) {
return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
}
// Convert standard box (e.g. java.lang.Integer) to JVMCI box (e.g. jdk.vm.ci.meta.PrimitiveConstant)
jvalue value;
jlong raw_value;
jchar type_char;
BasicType bt2 = java_lang_boxing_object::get_value(obj, &value);
assert(bt2 == bt, "");
switch (bt2) {
case T_LONG: type_char = 'J'; raw_value = value.j; break;
case T_DOUBLE: type_char = 'D'; raw_value = value.j; break;
case T_FLOAT: type_char = 'F'; raw_value = value.i; break;
case T_INT: type_char = 'I'; raw_value = value.i; break;
case T_SHORT: type_char = 'S'; raw_value = value.s; break;
case T_BYTE: type_char = 'B'; raw_value = value.b; break;
case T_CHAR: type_char = 'C'; raw_value = value.c; break;
case T_BOOLEAN: type_char = 'Z'; raw_value = value.z; break;
default: return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL());
}
JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, raw_value, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
}
}
return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj));
C2V_END
C2V_VMENTRY_NULL(jobjectArray, resolveBootstrapMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
constantTag tag = cp->tag_at(index);
bool is_indy = tag.is_invoke_dynamic();
bool is_condy = tag.is_dynamic_constant();
if (!(is_condy || is_indy)) {
JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value()));
}
// Get the indy entry based on CP index
int indy_index = -1;
for (int i = 0; i < cp->resolved_indy_entries_length(); i++) {
if (cp->resolved_indy_entry_at(i)->constant_pool_index() == index) {
indy_index = i;
}
}
// Resolve the bootstrap specifier, its name, type, and static arguments
BootstrapInfo bootstrap_specifier(cp, index, indy_index);
Handle bsm = bootstrap_specifier.resolve_bsm(CHECK_NULL);
// call java.lang.invoke.MethodHandle::asFixedArity() -> MethodHandle
// to get a DirectMethodHandle from which we can then extract a Method*
JavaValue result(T_OBJECT);
JavaCalls::call_virtual(&result,
bsm,
vmClasses::MethodHandle_klass(),
vmSymbols::asFixedArity_name(),
vmSymbols::asFixedArity_signature(),
CHECK_NULL);
bsm = Handle(THREAD, result.get_oop());
// Check assumption about getting a DirectMethodHandle
if (!java_lang_invoke_DirectMethodHandle::is_instance(bsm())) {
JVMCI_THROW_MSG_NULL(InternalError, err_msg("Unexpected MethodHandle subclass: %s", bsm->klass()->external_name()));
}
// Create return array describing the bootstrap method invocation (BSMI)
JVMCIObjectArray bsmi = JVMCIENV->new_Object_array(4, JVMCI_CHECK_NULL);
// Extract Method* and wrap it in a ResolvedJavaMethod
Handle member = Handle(THREAD, java_lang_invoke_DirectMethodHandle::member(bsm()));
JVMCIObject bsmi_method = JVMCIENV->get_jvmci_method(methodHandle(THREAD, java_lang_invoke_MemberName::vmtarget(member())), JVMCI_CHECK_NULL);
JVMCIENV->put_object_at(bsmi, 0, bsmi_method);
JVMCIObject bsmi_name = JVMCIENV->create_string(bootstrap_specifier.name(), JVMCI_CHECK_NULL);
JVMCIENV->put_object_at(bsmi, 1, bsmi_name);
Handle type_arg = bootstrap_specifier.type_arg();
JVMCIObject bsmi_type = JVMCIENV->get_object_constant(type_arg());
JVMCIENV->put_object_at(bsmi, 2, bsmi_type);
Handle arg_values = bootstrap_specifier.arg_values();
if (arg_values.not_null()) {
if (!arg_values->is_array()) {
JVMCIENV->put_object_at(bsmi, 3, JVMCIENV->get_object_constant(arg_values()));
} else if (arg_values->is_objArray()) {
objArrayHandle args_array = objArrayHandle(THREAD, (objArrayOop) arg_values());
int len = args_array->length();
JVMCIObjectArray arguments = JVMCIENV->new_JavaConstant_array(len, JVMCI_CHECK_NULL);
JVMCIENV->put_object_at(bsmi, 3, arguments);
for (int i = 0; i < len; i++) {
oop x = args_array->obj_at(i);
if (x != nullptr) {
JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_object_constant(x));
} else {
JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_JavaConstant_NULL_POINTER());
}
}
} else if (arg_values->is_typeArray()) {
typeArrayHandle bsci = typeArrayHandle(THREAD, (typeArrayOop) arg_values());
JVMCIPrimitiveArray arguments = JVMCIENV->new_intArray(bsci->length(), JVMCI_CHECK_NULL);
JVMCIENV->put_object_at(bsmi, 3, arguments);
for (int i = 0; i < bsci->length(); i++) {
JVMCIENV->put_int_at(arguments, i, bsci->int_at(i));
}
}
}
return JVMCIENV->get_jobjectArray(bsmi);
C2V_END
C2V_VMENTRY_0(jint, lookupNameAndTypeRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
return cp->name_and_type_ref_index_at(index);
C2V_END
C2V_VMENTRY_NULL(jobject, lookupNameInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
JVMCIObject sym = JVMCIENV->create_string(cp->name_ref_at(which), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(sym);
C2V_END
C2V_VMENTRY_NULL(jobject, lookupSignatureInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
JVMCIObject sym = JVMCIENV->create_string(cp->signature_ref_at(which), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(sym);
C2V_END
C2V_VMENTRY_0(jint, lookupKlassRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
return cp->klass_ref_index_at(index);
C2V_END
C2V_VMENTRY_NULL(jobject, resolveTypeInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
Klass* klass = cp->klass_at(index, CHECK_NULL);
JVMCIKlassHandle resolved_klass(THREAD, klass);
if (resolved_klass->is_instance_klass()) {
InstanceKlass::cast(resolved_klass())->link_class(CHECK_NULL);
if (!InstanceKlass::cast(resolved_klass())->is_linked()) {
// link_class() should not return here if there is an issue.
JVMCI_THROW_MSG_NULL(InternalError, err_msg("Class %s must be linked", resolved_klass()->external_name()));
}
}
JVMCIObject klassObject = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(klassObject);
C2V_END
C2V_VMENTRY_NULL(jobject, lookupKlassInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
Klass* loading_klass = cp->pool_holder();
bool is_accessible = false;
JVMCIKlassHandle klass(THREAD, JVMCIRuntime::get_klass_by_index(cp, index, is_accessible, loading_klass));
Symbol* symbol = nullptr;
if (klass.is_null()) {
constantTag tag = cp->tag_at(index);
if (tag.is_klass()) {
// The klass has been inserted into the constant pool
// very recently.
klass = cp->resolved_klass_at(index);
} else if (tag.is_symbol()) {
symbol = cp->symbol_at(index);
} else {
assert(cp->tag_at(index).is_unresolved_klass(), "wrong tag");
symbol = cp->klass_name_at(index);
}
}
JVMCIObject result;
if (!klass.is_null()) {
result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL);
} else {
result = JVMCIENV->create_string(symbol, JVMCI_CHECK_NULL);
}
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_NULL(jobject, lookupAppendixInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
oop appendix_oop = ConstantPool::appendix_at_if_loaded(cp, index);
return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(appendix_oop));
C2V_END
C2V_VMENTRY_NULL(jobject, lookupMethodInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jbyte opcode, ARGUMENT_PAIR(caller)))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
methodHandle caller(THREAD, UNPACK_PAIR(Method, caller));
InstanceKlass* pool_holder = cp->pool_holder();
Bytecodes::Code bc = (Bytecodes::Code) (((int) opcode) & 0xFF);
methodHandle method(THREAD, JVMCIRuntime::get_method_by_index(cp, index, bc, pool_holder));
JFR_ONLY(if (method.not_null()) Jfr::on_resolution(caller(), method(), CHECK_NULL);)
JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_0(jint, constantPoolRemapInstructionOperandFromCache, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
return cp->remap_instruction_operand_from_cache(index);
C2V_END
C2V_VMENTRY_NULL(jobject, resolveFieldInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, ARGUMENT_PAIR(method), jbyte opcode, jintArray info_handle))
constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp));
Bytecodes::Code code = (Bytecodes::Code)(((int) opcode) & 0xFF);
fieldDescriptor fd;
methodHandle mh(THREAD, UNPACK_PAIR(Method, method));
LinkInfo link_info(cp, index, mh, CHECK_NULL);
LinkResolver::resolve_field(fd, link_info, Bytecodes::java_code(code), false, CHECK_NULL);
JVMCIPrimitiveArray info = JVMCIENV->wrap(info_handle);
if (info.is_null() || JVMCIENV->get_length(info) != 4) {
JVMCI_ERROR_NULL("info must not be null and have a length of 4");
}
JVMCIENV->put_int_at(info, 0, fd.access_flags().as_int());
JVMCIENV->put_int_at(info, 1, fd.offset());
JVMCIENV->put_int_at(info, 2, fd.index());
JVMCIENV->put_int_at(info, 3, fd.field_flags().as_uint());
JVMCIKlassHandle handle(THREAD, fd.field_holder());
JVMCIObject field_holder = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(field_holder);
C2V_END
C2V_VMENTRY_0(jint, getVtableIndexForInterfaceMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method)))
Klass* klass = UNPACK_PAIR(Klass, klass);
methodHandle method(THREAD, UNPACK_PAIR(Method, method));
InstanceKlass* holder = method->method_holder();
if (klass->is_interface()) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Interface %s should be handled in Java code", klass->external_name()));
}
if (!holder->is_interface()) {
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()));
}
if (!klass->is_instance_klass()) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be instance klass", klass->external_name()));
}
if (!InstanceKlass::cast(klass)->is_linked()) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be linked", klass->external_name()));
}
if (!klass->is_subtype_of(holder)) {
JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s does not implement interface %s", klass->external_name(), holder->external_name()));
}
return LinkResolver::vtable_index_of_interface_method(klass, method);
C2V_END
C2V_VMENTRY_NULL(jobject, resolveMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(receiver), ARGUMENT_PAIR(method), ARGUMENT_PAIR(caller)))
Klass* recv_klass = UNPACK_PAIR(Klass, receiver);
Klass* caller_klass = UNPACK_PAIR(Klass, caller);
methodHandle method(THREAD, UNPACK_PAIR(Method, method));
Klass* resolved = method->method_holder();
Symbol* h_name = method->name();
Symbol* h_signature = method->signature();
if (MethodHandles::is_signature_polymorphic_method(method())) {
// Signature polymorphic methods are already resolved, JVMCI just returns null in this case.
return nullptr;
}
if (method->name() == vmSymbols::clone_name() &&
resolved == vmClasses::Object_klass() &&
recv_klass->is_array_klass()) {
// Resolution of the clone method on arrays always returns Object.clone even though that method
// has protected access. There's some trickery in the access checking to make this all work out
// so it's necessary to pass in the array class as the resolved class to properly trigger this.
// Otherwise it's impossible to resolve the array clone methods through JVMCI. See
// LinkResolver::check_method_accessability for the matching logic.
resolved = recv_klass;
}
LinkInfo link_info(resolved, h_name, h_signature, caller_klass);
Method* m = nullptr;
// Only do exact lookup if receiver klass has been linked. Otherwise,
// the vtable has not been setup, and the LinkResolver will fail.
if (recv_klass->is_array_klass() ||
(InstanceKlass::cast(recv_klass)->is_linked() && !recv_klass->is_interface())) {
if (resolved->is_interface()) {
m = LinkResolver::resolve_interface_call_or_null(recv_klass, link_info);
} else {
m = LinkResolver::resolve_virtual_call_or_null(recv_klass, link_info);
}
}
if (m == nullptr) {
// Return null if there was a problem with lookup (uninitialized class, etc.)
return nullptr;
}
JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, m), JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_0(jboolean, hasFinalizableSubclass,(JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
assert(klass != nullptr, "method must not be called for primitive types");
if (!klass->is_instance_klass()) {
return false;
}
InstanceKlass* iklass = InstanceKlass::cast(klass);
return Dependencies::find_finalizable_subclass(iklass) != nullptr;
C2V_END
C2V_VMENTRY_NULL(jobject, getClassInitializer, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass)))
Klass* klass = UNPACK_PAIR(Klass, klass);
if (!klass->is_instance_klass()) {
return nullptr;
}
InstanceKlass* iklass = InstanceKlass::cast(klass);
methodHandle clinit(THREAD, iklass->class_initializer());
JVMCIObject result = JVMCIENV->get_jvmci_method(clinit, JVMCI_CHECK_NULL);
return JVMCIENV->get_jobject(result);
C2V_END
C2V_VMENTRY_0(jlong, getMaxCallTargetOffset, (JNIEnv* env, jobject, jlong addr))
address target_addr = (address) addr;
if (target_addr != 0x0) {
int64_t off_low = (int64_t)target_addr - ((int64_t)CodeCache::low_bound() + sizeof(int));
int64_t off_high = (int64_t)target_addr - ((int64_t)CodeCache::high_bound() + sizeof(int));
return MAX2(ABS(off_low), ABS(off_high));
}
return -1;
C2V_END
C2V_VMENTRY(void, setNotInlinableOrCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method)))
methodHandle method(THREAD, UNPACK_PAIR(Method, method));
method->set_is_not_c1_compilable();
method->set_is_not_c2_compilable();
method->set_dont_inline(true);
C2V_END
C2V_VMENTRY_0(jint, getInstallCodeFlags, (JNIEnv *env, jobject))
int flags = 0;
#ifndef PRODUCT
flags |= 0x0001; // VM will install block comments
flags |= 0x0004; // Enable HotSpotJVMCIRuntime.Option.CodeSerializationTypeInfo if not explicitly set
#endif
if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
// VM needs to track method dependencies
flags |= 0x0002;
}
return flags;
C2V_END
C2V_VMENTRY_0(jint, installCode0, (JNIEnv *env, jobject,
jlong compiled_code_buffer,
jlong serialization_ns,
bool with_type_info,
jobject compiled_code,
jobjectArray object_pool,
jobject installed_code,
jlong failed_speculations_address,
jbyteArray speculations_obj))
HandleMark hm(THREAD);
JNIHandleMark jni_hm(thread);
JVMCIObject compiled_code_handle = JVMCIENV->wrap(compiled_code);
objArrayHandle object_pool_handle(thread, JVMCIENV->is_hotspot() ? (objArrayOop) JNIHandles::resolve(object_pool) : nullptr);
CodeBlob* cb = nullptr;
JVMCIObject installed_code_handle = JVMCIENV->wrap(installed_code);
JVMCIPrimitiveArray speculations_handle = JVMCIENV->wrap(speculations_obj);
int speculations_len = JVMCIENV->get_length(speculations_handle);
char* speculations = NEW_RESOURCE_ARRAY(char, speculations_len);
JVMCIENV->copy_bytes_to(speculations_handle, (jbyte*) speculations, 0, speculations_len);
JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK_JNI_ERR);
JVMCICompiler::CodeInstallStats* stats = compiler->code_install_stats(!thread->is_Compiler_thread());
elapsedTimer *timer = stats->timer();
timer->add_nanoseconds(serialization_ns);
TraceTime install_time("installCode", timer);
CodeInstaller installer(JVMCIENV);
JVMCI::CodeInstallResult result = installer.install(compiler,
compiled_code_buffer,
with_type_info,
compiled_code_handle,
object_pool_handle,
cb,
installed_code_handle,
(FailedSpeculation**)(address) failed_speculations_address,
speculations,
speculations_len,
JVMCI_CHECK_0);
if (PrintCodeCacheOnCompilation) {
stringStream s;
// Dump code cache into a buffer before locking the tty,
{
MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
CodeCache::print_summary(&s, false);
}
ttyLocker ttyl;
tty->print_raw_cr(s.freeze());
}