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ClassFileWriter.cpp
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/*******************************************************************************
* Copyright IBM Corp. and others 2001
*
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which accompanies this
* distribution and is available at https://www.eclipse.org/legal/epl-2.0/
* or the Apache License, Version 2.0 which accompanies this distribution and
* is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the following
* Secondary Licenses when the conditions for such availability set
* forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
* General Public License, version 2 with the GNU Classpath
* Exception [1] and GNU General Public License, version 2 with the
* OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] https://openjdk.org/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
*******************************************************************************/
/*
* ClassFileWriter.cpp
*/
/* Note: j9.h has to be included before bcnames.h to avoid conflict of
* J9InternalVMLabels->JBaload0getfield in j9generated.h with
* the macro JBaload0getfield in bcnames.h.
*/
#include "j9.h"
#include "bcnames.h"
#include "bcutil.h"
#include "cfr.h"
#include "cfreader.h"
#include "pcstack.h"
#include "rommeth.h"
#include "util_api.h"
#include "ClassFileWriter.hpp"
#define DECLARE_UTF8_ATTRIBUTE_NAME(instanceName, name) \
static const struct { \
U_16 length; \
U_8 data[sizeof(name)]; \
} instanceName = { sizeof(name) - 1, name }
DECLARE_UTF8_ATTRIBUTE_NAME(CONSTANT_VALUE, "ConstantValue");
DECLARE_UTF8_ATTRIBUTE_NAME(CODE, "Code");
DECLARE_UTF8_ATTRIBUTE_NAME(STACK_MAP_TABLE, "StackMapTable");
DECLARE_UTF8_ATTRIBUTE_NAME(EXCEPTIONS, "Exceptions");
DECLARE_UTF8_ATTRIBUTE_NAME(METHODPARAMETERS, "MethodParameters");
DECLARE_UTF8_ATTRIBUTE_NAME(INNER_CLASSES, "InnerClasses");
DECLARE_UTF8_ATTRIBUTE_NAME(ENCLOSING_METHOD, "EnclosingMethod");
DECLARE_UTF8_ATTRIBUTE_NAME(SIGNATURE, "Signature");
DECLARE_UTF8_ATTRIBUTE_NAME(SOURCE_FILE, "SourceFile");
DECLARE_UTF8_ATTRIBUTE_NAME(SOURCE_DEBUG_EXTENSION, "SourceDebugExtension");
DECLARE_UTF8_ATTRIBUTE_NAME(LINE_NUMBER_TABLE, "LineNumberTable");
DECLARE_UTF8_ATTRIBUTE_NAME(LOCAL_VARIABLE_TABLE, "LocalVariableTable");
DECLARE_UTF8_ATTRIBUTE_NAME(LOCAL_VARIABLE_TYPE_TABLE, "LocalVariableTypeTable");
DECLARE_UTF8_ATTRIBUTE_NAME(RUNTIME_VISIBLE_ANNOTATIONS, "RuntimeVisibleAnnotations");
DECLARE_UTF8_ATTRIBUTE_NAME(RUNTIME_VISIBLE_PARAMETER_ANNOTATIONS, "RuntimeVisibleParameterAnnotations");
DECLARE_UTF8_ATTRIBUTE_NAME(RUNTIME_VISIBLE_TYPE_ANNOTATIONS, "RuntimeVisibleTypeAnnotations");
DECLARE_UTF8_ATTRIBUTE_NAME(ANNOTATION_DEFAULT, "AnnotationDefault");
DECLARE_UTF8_ATTRIBUTE_NAME(BOOTSTRAP_METHODS, "BootstrapMethods");
DECLARE_UTF8_ATTRIBUTE_NAME(RECORD, "Record");
DECLARE_UTF8_ATTRIBUTE_NAME(PERMITTED_SUBCLASSES, "PermittedSubclasses");
#if defined(J9VM_OPT_VALHALLA_VALUE_TYPES)
DECLARE_UTF8_ATTRIBUTE_NAME(LOADABLEDESCRIPTORS, "LoadableDescriptors");
#endif /* defined(J9VM_OPT_VALHALLA_VALUE_TYPES) */
#if defined(J9VM_OPT_VALHALLA_FLATTENABLE_VALUE_TYPES)
DECLARE_UTF8_ATTRIBUTE_NAME(IMPLICITCREATION, "ImplicitCreation");
DECLARE_UTF8_ATTRIBUTE_NAME(NULLRESTRICTED, "NullRestricted");
#endif /* defined(J9VM_OPT_VALHALLA_FLATTENABLE_VALUE_TYPES) */
#if JAVA_SPEC_VERSION >= 11
DECLARE_UTF8_ATTRIBUTE_NAME(NEST_MEMBERS, "NestMembers");
DECLARE_UTF8_ATTRIBUTE_NAME(NEST_HOST, "NestHost");
#endif /* JAVA_SPEC_VERSION >= 11 */
void
ClassFileWriter::analyzeROMClass()
{
_cpHashTable = hashTableNew(OMRPORT_FROM_J9PORT(_portLibrary), "ClassFileWriter::_cpHashTable", _romClass->classFileCPCount, sizeof(HashTableEntry), 0, 0, J9MEM_CATEGORY_JVMTI, hashFunction, equalFunction, NULL, NULL);
if (NULL == _cpHashTable) {
_buildResult = OutOfMemory;
return;
}
#if defined(J9VM_OPT_VALHALLA_VALUE_TYPES)
if (J9_ARE_ALL_BITS_SET(_romClass->optionalFlags, J9_ROMCLASS_OPTINFO_INJECTED_INTERFACE_INFO)) {
_numOfInjectedInterfaces = getNumberOfInjectedInterfaces(_romClass);
}
#endif /* J9VM_OPT_VALHALLA_VALUE_TYPES */
/* Walk ROM class adding hashtable entries for all referenced UTF8s and NASs, with index=0 */
analyzeConstantPool();
analyzeInterfaces();
analyzeFields();
analyzeMethods();
addClassEntry(J9ROMCLASS_CLASSNAME(_romClass), 0);
/* Super class name is NULL only for java/lang/Object */
if (NULL != J9ROMCLASS_SUPERCLASSNAME(_romClass)) {
addClassEntry(J9ROMCLASS_SUPERCLASSNAME(_romClass), 0);
}
if (J9_ARE_ANY_BITS_SET(_romClass->extraModifiers, J9AccRecord)) {
analyzeRecordAttribute();
}
if (J9ROMCLASS_IS_SEALED(_romClass)) {
addEntry((void*) &PERMITTED_SUBCLASSES, 0, CFR_CONSTANT_Utf8);
U_32 *permittedSubclassesCountPtr = getNumberOfPermittedSubclassesPtr(_romClass);
for (U_32 i = 0; i < *permittedSubclassesCountPtr; i++) {
J9UTF8* permittedSubclassNameUtf8 = permittedSubclassesNameAtIndex(permittedSubclassesCountPtr, i);
addEntry(permittedSubclassNameUtf8, 0, CFR_CONSTANT_Utf8);
}
}
#if defined(J9VM_OPT_VALHALLA_VALUE_TYPES)
if (J9_ARE_ALL_BITS_SET(_romClass->optionalFlags, J9_ROMCLASS_OPTINFO_LOADABLEDESCRIPTORS_ATTRIBUTE)) {
addEntry((void *) &LOADABLEDESCRIPTORS, 0, CFR_CONSTANT_Utf8);
U_32 *loadableDescriptorsInfoPtr = getLoadableDescriptorsInfoPtr(_romClass);
U_32 numberOfLoadableDescriptors = *loadableDescriptorsInfoPtr;
for (U_32 i = 0; i < numberOfLoadableDescriptors; i++) {
J9UTF8 *loadableDescriptorUtf8 = loadableDescriptorAtIndex(loadableDescriptorsInfoPtr, i);
addEntry(loadableDescriptorUtf8, 0, CFR_CONSTANT_Utf8);
}
}
#endif /* defined(J9VM_OPT_VALHALLA_VALUE_TYPES) */
#if defined(J9VM_OPT_VALHALLA_FLATTENABLE_VALUE_TYPES)
if (J9_ARE_ALL_BITS_SET(_romClass->optionalFlags, J9_ROMCLASS_OPTINFO_IMPLICITCREATION_ATTRIBUTE)) {
U_32 implicitCreationFlags = (U_32)getImplicitCreationFlags(_romClass);
addEntry((void*) &IMPLICITCREATION, 0, CFR_CONSTANT_Utf8);
addEntry(&implicitCreationFlags, 0, CFR_CONSTANT_Integer);
}
#endif /* defined(J9VM_OPT_VALHALLA_FLATTENABLE_VALUE_TYPES) */
J9EnclosingObject * enclosingObject = getEnclosingMethodForROMClass(_javaVM, NULL, _romClass);
J9UTF8 * genericSignature = getGenericSignatureForROMClass(_javaVM, NULL, _romClass);
J9UTF8 * sourceFileName = getSourceFileNameForROMClass(_javaVM, NULL, _romClass);
J9SourceDebugExtension * sourceDebugExtension = getSourceDebugExtensionForROMClass(_javaVM, NULL, _romClass);
U_32 * annotationsData = getClassAnnotationsDataForROMClass(_romClass);
U_32 * typeAnnotationsData = getClassTypeAnnotationsDataForROMClass(_romClass);
J9UTF8 * outerClassName = J9ROMCLASS_OUTERCLASSNAME(_romClass);
J9UTF8 * simpleName = getSimpleNameForROMClass(_javaVM, NULL, _romClass);
#if JAVA_SPEC_VERSION >= 11
J9UTF8 *nestHost = J9ROMCLASS_NESTHOSTNAME(_romClass);
#endif /* JAVA_SPEC_VERSION >= 11 */
/* For a local class only InnerClasses.class[i].inner_name_index is preserved as simpleName in its J9ROMClass */
if ((0 != _romClass->innerClassCount)
|| (0 != _romClass->enclosedInnerClassCount)
|| J9_ARE_ANY_BITS_SET(_romClass->extraModifiers, J9AccClassInnerClass)
) {
addEntry((void *) &INNER_CLASSES, 0, CFR_CONSTANT_Utf8);
if (NULL != outerClassName) {
addClassEntry(outerClassName, 0);
}
if (NULL != simpleName) {
addEntry(simpleName, 0, CFR_CONSTANT_Utf8);
}
J9SRP * innerClasses = (J9SRP *) J9ROMCLASS_INNERCLASSES(_romClass);
for (UDATA i = 0; i < _romClass->innerClassCount; i++, innerClasses++) {
J9UTF8 * className = NNSRP_PTR_GET(innerClasses, J9UTF8 *);
addClassEntry(className, 0);
}
J9SRP * enclosedInnerClasses = (J9SRP *) J9ROMCLASS_ENCLOSEDINNERCLASSES(_romClass);
for (UDATA i = 0; i < _romClass->enclosedInnerClassCount; i++, enclosedInnerClasses++) {
J9UTF8 * className = NNSRP_PTR_GET(enclosedInnerClasses, J9UTF8 *);
addClassEntry(className, 0);
}
}
#if JAVA_SPEC_VERSION >= 11
/* Class can not have both a nest members and nest host attribute */
if (0 != _romClass->nestMemberCount) {
U_16 nestMemberCount = _romClass->nestMemberCount;
J9SRP *nestMembers = (J9SRP *) J9ROMCLASS_NESTMEMBERS(_romClass);
addEntry((void *) &NEST_MEMBERS, 0, CFR_CONSTANT_Utf8);
for (U_16 i = 0; i < nestMemberCount; i++) {
J9UTF8 * className = NNSRP_GET(nestMembers[i], J9UTF8 *);
addClassEntry(className, 0);
}
} else if (NULL != nestHost) {
addEntry((void *) &NEST_HOST, 0, CFR_CONSTANT_Utf8);
addClassEntry(nestHost, 0);
}
#endif /* JAVA_SPEC_VERSION >= 11 */
if (NULL != enclosingObject) {
addEntry((void *) &ENCLOSING_METHOD, 0, CFR_CONSTANT_Utf8);
J9ROMNameAndSignature * nas = J9ENCLOSINGOBJECT_NAMEANDSIGNATURE(enclosingObject);
if (NULL != nas) {
addNASEntry(nas);
}
}
if (NULL != genericSignature) {
addEntry((void *) &SIGNATURE, 0, CFR_CONSTANT_Utf8);
addEntry(genericSignature, 0, CFR_CONSTANT_Utf8);
}
if (NULL != sourceFileName) {
addEntry((void *) &SOURCE_FILE, 0, CFR_CONSTANT_Utf8);
addEntry(sourceFileName, 0, CFR_CONSTANT_Utf8);
}
if (NULL != sourceDebugExtension) {
addEntry((void *) &SOURCE_DEBUG_EXTENSION, 0, CFR_CONSTANT_Utf8);
}
if (NULL != annotationsData) {
addEntry((void *) &RUNTIME_VISIBLE_ANNOTATIONS, 0, CFR_CONSTANT_Utf8);
}
if (NULL != typeAnnotationsData) {
addEntry((void *) &RUNTIME_VISIBLE_TYPE_ANNOTATIONS, 0, CFR_CONSTANT_Utf8);
}
if (0 != _romClass->bsmCount) {
addEntry((void *) &BOOTSTRAP_METHODS, 0, CFR_CONSTANT_Utf8);
U_32 bsmCount = _romClass->bsmCount;
U_32 callSiteCount = _romClass->callSiteCount;
J9SRP * callSiteData = (J9SRP *) J9ROMCLASS_CALLSITEDATA(_romClass);
U_16 * bsmIndices = (U_16 *) (callSiteData + callSiteCount);
U_16 * bsmData = bsmIndices + callSiteCount;
U_16 * bsmCursor = bsmData;
for (U_32 i = 0; i < bsmCount; i++) {
U_16 argCount = bsmCursor[1];
bsmCursor += argCount + 2;
}
_bsmAttributeLength = (U_32)((bsmCursor - bsmData + 1) * sizeof(U_16)); /* +1 to account for num_bootstrap_methods */
}
/* Walk callSiteData and add InvokeDynamic CP entries.
*
* InvokeDynamic entries in J9ROMClass are stored as CallSite data.
* For every call site that refers an InvokeDynamic entry, we store its J9ROMNameAndSignature and bootstrapMethodIndex.
* First the SRPs to J9ROMNameAndSignature for each callsite are stored.
* This is followed by the bootstrapMethodIndex for each callsite.
* So the CallSite data consists of a block of SRPs to J9ROMNameAndSignature, followed by a block of bootstrapMethodIndices.
*
* If there are multiple call sites referring to same InvokeDynamic CP entry,
* then the contents get duplicated as many times.
*
* Eg: Say there are two InvokeDynamic entries in .class
*
* InvokeDynamic1
* bootstrap_method_attr_index1
* name_and_type_index1
* InvokeDynamic2
* bootstrap_method_attr_index2
* name_and_type_index2
*
* If InvokeDynamic1 is referred twice and InvokeDynamic2 is referred thrice,
* CallSite data layout in J9ROMClass will be:
*
* index: 0 1 2 3 4 0 1 2 3 4
*
* | SRP to NAS1 | SRP to NAS1 | SRP to NAS2 | SRP to NAS2 | SRP to NAS2 | bsm1 | bsm1 | bsm2 | bsm2 | bsm2 |
*
* When adding an entry in _cpHashTable for an InvokeDynamic entry,
* address of its SRP to J9ROMNameAndSignature is used as key.
* However, we need to skip the duplicate entries.
* In above example, entries at index 1, 3 and 4 are duplicate and should be skipped.
* This is achieved by checking J9ROMNameAndSignature address of callSite being considered with the
* address of J9ROMNameAndSignature of the callSite last stored in _cpHashTable.
* If they are same, it indicates a duplicate entry and can be skipped.
*/
if (0 != _romClass->callSiteCount) {
J9SRP * callSiteData = (J9SRP *) J9ROMCLASS_CALLSITEDATA(_romClass);
U_16 const * bsmIndices = (U_16 *) (callSiteData + _romClass->callSiteCount);
J9ROMNameAndSignature * prevNAS = NULL;
U_16 prevIndex = (U_16)-1; /* set to invalid value */
for (UDATA i = 0; i < _romClass->callSiteCount; i++) {
J9ROMNameAndSignature * nas = SRP_PTR_GET(callSiteData + i, J9ROMNameAndSignature *);
U_16 index = bsmIndices[i];
if ((nas != prevNAS) || (index != prevIndex)) {
/* Both the index and the NAS need to be the same to be considered the same element */
addEntry(callSiteData + i, 0, CFR_CONSTANT_InvokeDynamic);
addNASEntry(nas);
prevNAS = nas;
prevIndex = index;
}
}
}
/* Walk the hashtable assigning indexes to all entries with index==0 */
/* romConstantPoolCount has only one slot for Long/Double CP entries,
* but they occupy two slots in .class constant pool.
*/
U_16 doubleSlotCount = _romClass->romConstantPoolCount - _romClass->ramConstantPoolCount;
_constantPoolCount = _romClass->romConstantPoolCount + doubleSlotCount;
J9HashTableState hashTableState;
HashTableEntry * entry = (HashTableEntry *) hashTableStartDo(_cpHashTable, &hashTableState);
while (NULL != entry) {
if (0 == entry->cpIndex) {
entry->cpIndex = _constantPoolCount;
_constantPoolCount += 1;
if ((CFR_CONSTANT_Long == entry->cpType) || (CFR_CONSTANT_Double == entry->cpType)) {
_constantPoolCount += 1;
}
}
entry = (HashTableEntry *) hashTableNextDo(&hashTableState);
}
}
void
ClassFileWriter::analyzeConstantPool()
{
/* Walk ROM CP adding hashtable entries for all
* J9CPTYPE_INT, J9CPTYPE_FLOAT, J9CPTYPE_LONG, J9CPTYPE_DOUBLE CP entries, with their index,
* and all referenced UTF8s & NASs
*/
U_16 cpCount = _romClass->romConstantPoolCount;
J9ROMConstantPoolItem * constantPool = J9_ROM_CP_FROM_ROM_CLASS(_romClass);
U_32 * cpShapeDescription = J9ROMCLASS_CPSHAPEDESCRIPTION(_romClass);
for (U_16 i = 1; i < cpCount; i++) {
J9ROMConstantPoolItem * cpItem = constantPool + i;
switch (J9_CP_TYPE(cpShapeDescription, i)) {
case J9CPTYPE_CLASS:
addClassEntry(J9ROMCLASSREF_NAME((J9ROMClassRef *) cpItem), i);
break;
case J9CPTYPE_STRING:
addEntry(J9ROMSTRINGREF_UTF8DATA((J9ROMStringRef *) cpItem), 0, CFR_CONSTANT_Utf8);
break;
case J9CPTYPE_FIELD:
addNASEntry(J9ROMFIELDREF_NAMEANDSIGNATURE((J9ROMFieldRef *) cpItem));
break;
case J9CPTYPE_INSTANCE_METHOD:
case J9CPTYPE_STATIC_METHOD:
case J9CPTYPE_INTERFACE_METHOD:
case J9CPTYPE_INTERFACE_STATIC_METHOD:
case J9CPTYPE_INTERFACE_INSTANCE_METHOD:
case J9CPTYPE_HANDLE_METHOD:
addNASEntry(J9ROMMETHODREF_NAMEANDSIGNATURE((J9ROMMethodRef *) cpItem));
break;
case J9CPTYPE_METHOD_TYPE:
addEntry(J9ROMMETHODTYPEREF_SIGNATURE((J9ROMMethodTypeRef *) cpItem), 0, CFR_CONSTANT_Utf8);
break;
case J9CPTYPE_METHODHANDLE:
/* do nothing */
break;
case J9CPTYPE_INT:
addEntry(&((J9ROMSingleSlotConstantRef *) cpItem)->data, i, CFR_CONSTANT_Integer);
break;
case J9CPTYPE_FLOAT:
addEntry(&((J9ROMSingleSlotConstantRef *) cpItem)->data, i, CFR_CONSTANT_Float);
break;
case J9CPTYPE_LONG:
addEntry(&((J9ROMConstantRef *) cpItem)->slot1, i + (i - _romClass->ramConstantPoolCount), CFR_CONSTANT_Long);
break;
case J9CPTYPE_DOUBLE:
addEntry(&((J9ROMConstantRef *) cpItem)->slot1, i + (i - _romClass->ramConstantPoolCount), CFR_CONSTANT_Double);
break;
case J9CPTYPE_ANNOTATION_UTF8:
addEntry(J9ROMSTRINGREF_UTF8DATA((J9ROMStringRef *) cpItem), i, CFR_CONSTANT_Utf8);
break;
case J9CPTYPE_CONSTANT_DYNAMIC:
addNASEntry(J9ROMCONSTANTDYNAMICREF_NAMEANDSIGNATURE((J9ROMConstantDynamicRef *) cpItem));
break;
default:
Trc_BCU_Assert_ShouldNeverHappen();
break;
}
}
}
void
ClassFileWriter::analyzeInterfaces()
{
J9SRP * interfaceNames = J9ROMCLASS_INTERFACES(_romClass);
UDATA interfaceCount = _romClass->interfaceCount;
#if defined(J9VM_OPT_VALHALLA_VALUE_TYPES)
interfaceCount -= _numOfInjectedInterfaces;
#endif /* J9VM_OPT_VALHALLA_VALUE_TYPES */
for (UDATA i = 0; i < interfaceCount; i++) {
J9UTF8 * interfaceName = NNSRP_GET(interfaceNames[i], J9UTF8*);
addClassEntry(interfaceName, 0);
}
}
void
ClassFileWriter::analyzeFields()
{
J9ROMFieldWalkState fieldWalkState;
J9ROMFieldShape * fieldShape = romFieldsStartDo(_romClass, &fieldWalkState);
while (NULL != fieldShape) {
addEntry(J9ROMFIELDSHAPE_NAME(fieldShape), 0, CFR_CONSTANT_Utf8);
addEntry(J9ROMFIELDSHAPE_SIGNATURE(fieldShape), 0, CFR_CONSTANT_Utf8);
J9UTF8 * genericSignature = romFieldGenericSignature(fieldShape);
if (NULL != genericSignature) {
addEntry((void *) &SIGNATURE, 0, CFR_CONSTANT_Utf8);
addEntry(genericSignature, 0, CFR_CONSTANT_Utf8);
}
if (J9FieldFlagHasFieldAnnotations & fieldShape->modifiers) {
addEntry((void *) &RUNTIME_VISIBLE_ANNOTATIONS, 0, CFR_CONSTANT_Utf8);
}
if (J9FieldFlagHasTypeAnnotations & fieldShape->modifiers) {
addEntry((void *) &RUNTIME_VISIBLE_TYPE_ANNOTATIONS, 0, CFR_CONSTANT_Utf8);
}
if (J9FieldFlagConstant & fieldShape->modifiers) {
addEntry((void *) &CONSTANT_VALUE, 0, CFR_CONSTANT_Utf8);
if (0 == (J9FieldFlagObject & fieldShape->modifiers)) {
U_32 * value = romFieldInitialValueAddress(fieldShape);
U_8 cpType = 0;
switch (J9FieldTypeMask & fieldShape->modifiers) {
case J9FieldTypeDouble:
cpType = CFR_CONSTANT_Double;
break;
case J9FieldTypeLong:
cpType = CFR_CONSTANT_Long;
break;
case J9FieldTypeFloat:
cpType = CFR_CONSTANT_Float;
break;
default:
cpType = CFR_CONSTANT_Integer;
break;
}
addEntry(value, 0, cpType);
}
}
#if defined(J9VM_OPT_VALHALLA_FLATTENABLE_VALUE_TYPES)
if (J9_ARE_ALL_BITS_SET(fieldShape->modifiers, J9FieldFlagIsNullRestricted)) {
addEntry((void *) &NULLRESTRICTED, 0, CFR_CONSTANT_Utf8);
}
#endif /* defined(J9VM_OPT_VALHALLA_FLATTENABLE_VALUE_TYPES) */
fieldShape = romFieldsNextDo(&fieldWalkState);
}
}
void
ClassFileWriter::analyzeMethods()
{
J9ROMMethod * method = J9ROMCLASS_ROMMETHODS(_romClass);
for (U_32 i = 0; i < _romClass->romMethodCount; i++) {
addEntry(J9ROMMETHOD_NAME(method), 0, CFR_CONSTANT_Utf8);
addEntry(J9ROMMETHOD_SIGNATURE(method), 0, CFR_CONSTANT_Utf8);
if (J9ROMMETHOD_HAS_GENERIC_SIGNATURE(method)) {
addEntry((void *) &SIGNATURE, 0, CFR_CONSTANT_Utf8);
addEntry(J9_GENERIC_SIGNATURE_FROM_ROM_METHOD(method), 0, CFR_CONSTANT_Utf8);
}
if (0 == ((J9AccAbstract | J9AccNative) & method->modifiers)) {
addEntry((void *) &CODE, 0, CFR_CONSTANT_Utf8);
}
if (J9ROMMETHOD_HAS_EXCEPTION_INFO(method)) {
J9ExceptionInfo * exceptionInfo = J9_EXCEPTION_DATA_FROM_ROM_METHOD(method);
if (0 != exceptionInfo->throwCount) {
addEntry((void *) &EXCEPTIONS, 0, CFR_CONSTANT_Utf8);
U_8 * address = (U_8 *) (exceptionInfo + 1);
address += sizeof(J9ExceptionHandler) * exceptionInfo->catchCount;
J9SRP * throwNames = (J9SRP *) address;
for (U_16 i = 0; i < exceptionInfo->throwCount; i++) {
J9UTF8 * throwName = NNSRP_GET(throwNames[i], J9UTF8 *);
addClassEntry(throwName, 0);
}
}
}
if (J9ROMMETHOD_HAS_METHOD_PARAMETERS(method)) {
addEntry((void *) &METHODPARAMETERS, 0, CFR_CONSTANT_Utf8);
/*
J9MethodParametersData
__________________________
| U_8 methodParameterCount |
|__________________________|
|__________________________|
| J9MethodParameter |
|__________________________|
| J9MethodParameter | ===========> methodParameterCount * J9MethodParameter
|__________________________|
| . . . |
| . . . |
|__________________________|
struct J9MethodParameter
---------------------------------------
|J9SRP name (J9SRP -> J9UTF8) |
|U_16 flags |
---------------------------------------
*/
J9MethodParametersData * methodParametersData = methodParametersFromROMMethod(method);
J9MethodParameter * parameters = &methodParametersData->parameters;
for (U_8 i = 0; i < methodParametersData->parameterCount; i++) {
J9UTF8 * parameterNameUTF8 = SRP_GET(parameters[i].name, J9UTF8 *);
if (NULL != parameterNameUTF8) {
addEntry(parameterNameUTF8, 0, CFR_CONSTANT_Utf8);
}
}
}
if (J9ROMMETHOD_HAS_ANNOTATIONS_DATA(method)) {
addEntry((void *) &RUNTIME_VISIBLE_ANNOTATIONS, 0, CFR_CONSTANT_Utf8);
}
if (J9ROMMETHOD_HAS_PARAMETER_ANNOTATIONS(method)) {
addEntry((void *) &RUNTIME_VISIBLE_PARAMETER_ANNOTATIONS, 0, CFR_CONSTANT_Utf8);
}
U_32 extendedModifiers = getExtendedModifiersDataFromROMMethod(method);
if (J9ROMMETHOD_HAS_METHOD_TYPE_ANNOTATIONS(extendedModifiers) || J9ROMMETHOD_HAS_CODE_TYPE_ANNOTATIONS(extendedModifiers)) {
addEntry((void *) &RUNTIME_VISIBLE_TYPE_ANNOTATIONS, 0, CFR_CONSTANT_Utf8);
}
if (J9ROMMETHOD_HAS_DEFAULT_ANNOTATION(method)) {
addEntry((void *) &ANNOTATION_DEFAULT, 0, CFR_CONSTANT_Utf8);
}
if (J9ROMMETHOD_HAS_STACK_MAP(method)) {
addEntry((void *) &STACK_MAP_TABLE, 0, CFR_CONSTANT_Utf8);
}
J9MethodDebugInfo* debugInfo = getMethodDebugInfoFromROMMethod(method);
if (NULL != debugInfo) {
if (0 != debugInfo->lineNumberCount) {
addEntry((void *) &LINE_NUMBER_TABLE, 0, CFR_CONSTANT_Utf8);
}
if (0 != debugInfo->varInfoCount) {
addEntry((void *) &LOCAL_VARIABLE_TABLE, 0, CFR_CONSTANT_Utf8);
J9VariableInfoWalkState state;
J9VariableInfoValues *values = NULL;
bool typeTable = false;
values = variableInfoStartDo(debugInfo, &state);
while(NULL != values) {
addEntry(values->name, 0, CFR_CONSTANT_Utf8);
addEntry(values->signature, 0, CFR_CONSTANT_Utf8);
if (NULL != values->genericSignature) {
/* If any of the values has 'genericSignature' non-null, then it has LocalVariableTypeTable */
typeTable = true;
addEntry(values->genericSignature, 0, CFR_CONSTANT_Utf8);
}
values = variableInfoNextDo(&state);
}
if (typeTable) {
addEntry((void *) &LOCAL_VARIABLE_TYPE_TABLE, 0, CFR_CONSTANT_Utf8);
}
}
}
method = nextROMMethod(method);
}
}
void
ClassFileWriter::analyzeRecordAttribute()
{
addEntry((void *) &RECORD, 0, CFR_CONSTANT_Utf8);
/* first 4 bytes contains number of record components */
U_32 numberOfRecords = getNumberOfRecordComponents(_romClass);
J9ROMRecordComponentShape* recordComponent = recordComponentStartDo(_romClass);
for (U_32 i = 0; i < numberOfRecords; i++) {
/* record component name and signature */
addEntry(J9ROMRECORDCOMPONENTSHAPE_NAME(recordComponent), 0, CFR_CONSTANT_Utf8);
addEntry(J9ROMRECORDCOMPONENTSHAPE_SIGNATURE(recordComponent), 0, CFR_CONSTANT_Utf8);
/* analyze attributes */
if (recordComponentHasSignature(recordComponent)) {
J9UTF8* genericSignature = getRecordComponentGenericSignature(recordComponent);
addEntry((void *) &SIGNATURE, 0, CFR_CONSTANT_Utf8);
addEntry(genericSignature, 0, CFR_CONSTANT_Utf8);
}
if (recordComponentHasAnnotations(recordComponent)) {
addEntry((void *) &RUNTIME_VISIBLE_ANNOTATIONS, 0, CFR_CONSTANT_Utf8);
}
if (recordComponentHasTypeAnnotations(recordComponent)) {
addEntry((void *) &RUNTIME_VISIBLE_TYPE_ANNOTATIONS, 0, CFR_CONSTANT_Utf8);
}
recordComponent = recordComponentNextDo(recordComponent);
}
}
void
ClassFileWriter::writeClassFile()
{
writeU32(CFR_MAGIC);
writeU16(_romClass->minorVersion);
writeU16(_romClass->majorVersion);
writeConstantPool();
writeU16(_romClass->modifiers & CFR_CLASS_ACCESS_MASK);
writeU16(indexForClass(J9ROMCLASS_CLASSNAME(_romClass)));
/* Super class name is NULL only for java/lang/Object */
if (NULL != J9ROMCLASS_SUPERCLASSNAME(_romClass)) {
writeU16(indexForClass(J9ROMCLASS_SUPERCLASSNAME(_romClass)));
} else {
writeU16(0);
}
writeInterfaces();
writeFields();
writeMethods();
writeAttributes();
}
void
ClassFileWriter::writeConstantPool()
{
U_16 cpCount = _romClass->romConstantPoolCount;
J9ROMConstantPoolItem * constantPool = J9_ROM_CP_FROM_ROM_CLASS(_romClass);
U_32 * cpShapeDescription = J9ROMCLASS_CPSHAPEDESCRIPTION(_romClass);
writeU16(_constantPoolCount);
/* Expand all ROM CP entries into .class file CP entries */
for (U_16 i = 1; i < cpCount; i++) {
J9ROMConstantPoolItem * cpItem = constantPool + i;
switch (J9_CP_TYPE(cpShapeDescription, i)) {
case J9CPTYPE_CLASS:
writeU8(CFR_CONSTANT_Class);
writeU16(indexForUTF8(J9ROMCLASSREF_NAME((J9ROMClassRef *) cpItem)));
break;
case J9CPTYPE_STRING:
writeU8(CFR_CONSTANT_String);
writeU16(indexForUTF8(J9ROMSTRINGREF_UTF8DATA((J9ROMStringRef *) cpItem)));
break;
case J9CPTYPE_FIELD:
writeU8(CFR_CONSTANT_Fieldref);
writeU16(U_16(((J9ROMFieldRef *) cpItem)->classRefCPIndex));
writeU16(indexForNAS(J9ROMFIELDREF_NAMEANDSIGNATURE((J9ROMFieldRef *) cpItem)));
break;
case J9CPTYPE_INSTANCE_METHOD:
case J9CPTYPE_STATIC_METHOD:
case J9CPTYPE_HANDLE_METHOD:
writeU8(CFR_CONSTANT_Methodref);
writeU16(U_16(((J9ROMMethodRef *) cpItem)->classRefCPIndex));
writeU16(indexForNAS(J9ROMMETHODREF_NAMEANDSIGNATURE((J9ROMMethodRef *) cpItem)));
break;
case J9CPTYPE_INTERFACE_METHOD:
case J9CPTYPE_INTERFACE_STATIC_METHOD:
case J9CPTYPE_INTERFACE_INSTANCE_METHOD:
writeU8(CFR_CONSTANT_InterfaceMethodref);
writeU16(U_16(((J9ROMMethodRef *) cpItem)->classRefCPIndex));
writeU16(indexForNAS(J9ROMMETHODREF_NAMEANDSIGNATURE((J9ROMMethodRef *) cpItem)));
break;
case J9CPTYPE_METHOD_TYPE:
writeU8(CFR_CONSTANT_MethodType);
writeU16(indexForUTF8(J9ROMMETHODTYPEREF_SIGNATURE((J9ROMMethodTypeRef *) cpItem)));
break;
case J9CPTYPE_METHODHANDLE:
writeU8(CFR_CONSTANT_MethodHandle);
writeU8(U_8(((J9ROMMethodHandleRef *) cpItem)->handleTypeAndCpType >> BCT_J9DescriptionCpTypeShift));
writeU16(U_16(((J9ROMMethodHandleRef *) cpItem)->methodOrFieldRefIndex));
break;
case J9CPTYPE_INT:
writeU8(CFR_CONSTANT_Integer);
writeU32(((J9ROMSingleSlotConstantRef *) cpItem)->data);
break;
case J9CPTYPE_FLOAT:
writeU8(CFR_CONSTANT_Float);
writeU32(((J9ROMSingleSlotConstantRef *) cpItem)->data);
break;
case J9CPTYPE_LONG:
writeU8(CFR_CONSTANT_Long);
#ifdef J9VM_ENV_LITTLE_ENDIAN
writeU32(((J9ROMConstantRef *) cpItem)->slot2);
writeU32(((J9ROMConstantRef *) cpItem)->slot1);
#else /* J9VM_ENV_LITTLE_ENDIAN */
writeU32(((J9ROMConstantRef *) cpItem)->slot1);
writeU32(((J9ROMConstantRef *) cpItem)->slot2);
#endif /* J9VM_ENV_LITTLE_ENDIAN */
break;
case J9CPTYPE_DOUBLE:
writeU8(CFR_CONSTANT_Double);
#ifdef J9VM_ENV_LITTLE_ENDIAN
writeU32(((J9ROMConstantRef *) cpItem)->slot2);
writeU32(((J9ROMConstantRef *) cpItem)->slot1);
#else /* J9VM_ENV_LITTLE_ENDIAN */
writeU32(((J9ROMConstantRef *) cpItem)->slot1);
writeU32(((J9ROMConstantRef *) cpItem)->slot2);
#endif /* J9VM_ENV_LITTLE_ENDIAN */
break;
case J9CPTYPE_ANNOTATION_UTF8:
writeU8(CFR_CONSTANT_Utf8);
writeU16(J9UTF8_LENGTH(J9ROMSTRINGREF_UTF8DATA((J9ROMStringRef *) cpItem)));
writeData(J9UTF8_LENGTH(J9ROMSTRINGREF_UTF8DATA((J9ROMStringRef *) cpItem)), J9UTF8_DATA(J9ROMSTRINGREF_UTF8DATA((J9ROMStringRef *) cpItem)));
break;
case J9CPTYPE_CONSTANT_DYNAMIC:
writeU8(CFR_CONSTANT_Dynamic);
writeU16(U_16((((J9ROMConstantDynamicRef *) cpItem)->bsmIndexAndCpType >> J9DescriptionCpTypeShift) & J9DescriptionCpBsmIndexMask));
writeU16(indexForNAS(J9ROMCONSTANTDYNAMICREF_NAMEANDSIGNATURE((J9ROMConstantDynamicRef *) cpItem)));
break;
default:
Trc_BCU_Assert_ShouldNeverHappen();
break;
}
}
U_16 doubleSlotCount = _romClass->romConstantPoolCount - _romClass->ramConstantPoolCount;
/* Walk the hashtable and write CP entries for all hashtable entries with index >= _romClass->romConstantPoolCount */
J9HashTableState hashTableState;
HashTableEntry * entry = (HashTableEntry *) hashTableStartDo(_cpHashTable, &hashTableState);
while (NULL != entry) {
if ((_romClass->romConstantPoolCount + doubleSlotCount) <= entry->cpIndex) {
writeU8(entry->cpType);
switch (entry->cpType) {
case CFR_CONSTANT_Utf8:
{
J9UTF8 * utf8 = (J9UTF8 *) entry->address;
/* If this is an anonClass, we must build the classData with the original name,
* not the anonClass name. There is only one copy of the className in the ROMClass,
* so replace the matching anonClassName reference with the originalClassName reference
*/
if (_isAnon) {
if (utf8 == _anonClassName) {
utf8 = _originalClassName;
}
}
writeU16(J9UTF8_LENGTH(utf8));
writeData(J9UTF8_LENGTH(utf8), J9UTF8_DATA(utf8));
break;
}
case CFR_CONSTANT_Class:
writeU16(indexForUTF8((J9UTF8 *) entry->address));
break;
case CFR_CONSTANT_Double: /* fall through */
case CFR_CONSTANT_Long:
#ifdef J9VM_ENV_LITTLE_ENDIAN
writeU32(((U_32 *) entry->address)[1]);
writeU32(((U_32 *) entry->address)[0]);
#else /* J9VM_ENV_LITTLE_ENDIAN */
writeU32(((U_32 *) entry->address)[0]);
writeU32(((U_32 *) entry->address)[1]);
#endif /* J9VM_ENV_LITTLE_ENDIAN */
break;
case CFR_CONSTANT_Float: /* fall through */
case CFR_CONSTANT_Integer:
writeU32(((U_32 *) entry->address)[0]);
break;
case CFR_CONSTANT_NameAndType: {
J9ROMNameAndSignature * nas = (J9ROMNameAndSignature *) entry->address;
writeU16(indexForUTF8(J9ROMNAMEANDSIGNATURE_NAME(nas)));
writeU16(indexForUTF8(J9ROMNAMEANDSIGNATURE_SIGNATURE(nas)));
break;
}
case CFR_CONSTANT_InvokeDynamic: {
J9SRP * callSiteData = (J9SRP *) J9ROMCLASS_CALLSITEDATA(_romClass);
U_16 * bsmIndices = (U_16 *) (callSiteData + _romClass->callSiteCount);
J9SRP * srp = (J9SRP *) entry->address;
UDATA index(srp - callSiteData);
U_16 bsmIndex = bsmIndices[index];
J9ROMNameAndSignature * nas = SRP_PTR_GET(srp, J9ROMNameAndSignature *);
writeU16(bsmIndex);
writeU16(indexForNAS(nas));
break;
}
default:
Trc_BCU_Assert_ShouldNeverHappen();
break;
}
}
entry = (HashTableEntry *) hashTableNextDo(&hashTableState);
}
}
void
ClassFileWriter::writeInterfaces()
{
J9SRP * interfaceNames = J9ROMCLASS_INTERFACES(_romClass);
UDATA interfaceCount = _romClass->interfaceCount;
#if defined(J9VM_OPT_VALHALLA_VALUE_TYPES)
interfaceCount -= _numOfInjectedInterfaces;
#endif /* J9VM_OPT_VALHALLA_VALUE_TYPES */
writeU16(U_16(interfaceCount));
for (UDATA i = 0; i < interfaceCount; i++) {
J9UTF8 * interfaceName = NNSRP_GET(interfaceNames[i], J9UTF8 *);
writeU16(indexForClass(interfaceName));
}
}
void
ClassFileWriter::writeField(J9ROMFieldShape * fieldShape)
{
J9UTF8 * name = J9ROMFIELDSHAPE_NAME(fieldShape);
J9UTF8 * signature = J9ROMFIELDSHAPE_SIGNATURE(fieldShape);
J9UTF8 * genericSignature = romFieldGenericSignature(fieldShape);
U_32 * annotationsData = getFieldAnnotationsDataFromROMField(fieldShape);
U_32 * typeAnnotationsData = getFieldTypeAnnotationsDataFromROMField(fieldShape);
U_16 attributesCount = 0;
if (J9FieldFlagConstant & fieldShape->modifiers) {
attributesCount += 1;
}
if (NULL != genericSignature) {
attributesCount += 1;
}
if (NULL != annotationsData) {
attributesCount += 1;
}
if (NULL != typeAnnotationsData) {
attributesCount += 1;
}
#if defined(J9VM_OPT_VALHALLA_FLATTENABLE_VALUE_TYPES)
if (J9_ARE_ALL_BITS_SET(fieldShape->modifiers, J9FieldFlagIsNullRestricted)) {
attributesCount += 1;
}
#endif /* defined(J9VM_OPT_VALHALLA_FLATTENABLE_VALUE_TYPES) */
writeU16(U_16(fieldShape->modifiers & CFR_FIELD_ACCESS_MASK));
writeU16(indexForUTF8(name));
writeU16(indexForUTF8(signature));
writeU16(attributesCount);
if (J9FieldFlagConstant & fieldShape->modifiers) {
U_32 * value = romFieldInitialValueAddress(fieldShape);
U_16 index = 0;
if (J9FieldFlagObject & fieldShape->modifiers) {
index = *value;
} else {
switch (J9FieldTypeMask & fieldShape->modifiers) {
case J9FieldTypeDouble:
index = indexForDouble(value);
break;
case J9FieldTypeLong:
index = indexForLong(value);
break;
case J9FieldTypeFloat:
index = indexForFloat(value);
break;
default:
index = indexForInteger(value);
break;
}
}
writeAttributeHeader((J9UTF8 *) &CONSTANT_VALUE, 2);
writeU16(index);
}
if (NULL != genericSignature) {
writeSignatureAttribute(genericSignature);
}
if (NULL != annotationsData) {
writeAnnotationsAttribute(annotationsData);
}
if (NULL != typeAnnotationsData) {
writeTypeAnnotationsAttribute(typeAnnotationsData);
}
#if defined(J9VM_OPT_VALHALLA_FLATTENABLE_VALUE_TYPES)
if (J9_ARE_ALL_BITS_SET(fieldShape->modifiers, J9FieldFlagIsNullRestricted)) {
writeAttributeHeader((J9UTF8 *) &NULLRESTRICTED, 0);
}
#endif /* defined(J9VM_OPT_VALHALLA_FLATTENABLE_VALUE_TYPES) */
}
void
ClassFileWriter::writeFields()
{
writeU16(U_16(_romClass->romFieldCount));
J9ROMFieldWalkState state;
J9ROMFieldShape * fieldShape = romFieldsStartDo(_romClass, &state);
while (NULL != fieldShape) {
writeField(fieldShape);
fieldShape = romFieldsNextDo(&state);
}
}
void
ClassFileWriter::writeMethod(J9ROMMethod * method)
{
J9UTF8 * name = J9ROMMETHOD_NAME(method);
J9UTF8 * signature = J9ROMMETHOD_SIGNATURE(method);
J9UTF8 * genericSignature = J9_GENERIC_SIGNATURE_FROM_ROM_METHOD(method);
U_32 * defaultAnnotationsData = getDefaultAnnotationDataFromROMMethod(method);
U_32 * parameterAnnotationsData = getParameterAnnotationsDataFromROMMethod(method);
U_32 * typeAnnotationsData = getMethodTypeAnnotationsDataFromROMMethod(method);
U_32 * annotationsData = getMethodAnnotationsDataFromROMMethod(method);
J9MethodParametersData * methodParametersData = getMethodParametersFromROMMethod(method);
U_16 attributesCount = 0;
/* native or abstract methods don't have Code attribute */
if (0 == ((J9AccAbstract | J9AccNative) & method->modifiers)) {
attributesCount += 1;
}
if (NULL != genericSignature) {
attributesCount += 1;
}
if (J9ROMMETHOD_HAS_EXCEPTION_INFO(method)) {
J9ExceptionInfo * exceptionInfo = J9_EXCEPTION_DATA_FROM_ROM_METHOD(method);
if (0 != exceptionInfo->throwCount) {
attributesCount += 1;
}
}
if (NULL != annotationsData) {
attributesCount += 1;
}
if (NULL != parameterAnnotationsData) {
attributesCount += 1;
}
if (NULL != typeAnnotationsData) {
attributesCount += 1;
}
if (NULL != defaultAnnotationsData) {
attributesCount += 1;
}
if (NULL != methodParametersData) {
attributesCount += 1;
}
writeU16(U_16(method->modifiers & CFR_METHOD_ACCESS_MASK));
writeU16(indexForUTF8(name));
writeU16(indexForUTF8(signature));
writeU16(attributesCount);
if (0 == ((J9AccAbstract | J9AccNative) & method->modifiers)) {
writeCodeAttribute(method);
}
if (NULL != genericSignature) {
writeSignatureAttribute(genericSignature);
}
if (J9ROMMETHOD_HAS_EXCEPTION_INFO(method)) {
J9ExceptionInfo * exceptionInfo = J9_EXCEPTION_DATA_FROM_ROM_METHOD(method);
if (0 != exceptionInfo->throwCount) {
U_8 * address = (U_8 *) (exceptionInfo + 1);
address += sizeof(J9ExceptionHandler) * exceptionInfo->catchCount;
J9SRP * throwNames = (J9SRP *) address;
writeAttributeHeader((J9UTF8 *) &EXCEPTIONS, sizeof(U_16) + (sizeof(U_16) * exceptionInfo->throwCount));
writeU16(exceptionInfo->throwCount);
for (U_16 i = 0; i < exceptionInfo->throwCount; i++) {
J9UTF8 * throwName = NNSRP_GET(throwNames[i], J9UTF8 *);
writeU16(indexForClass(throwName));
}
}
}
if (NULL != annotationsData) {
writeAnnotationsAttribute(annotationsData);
}
if (NULL != parameterAnnotationsData) {
writeParameterAnnotationsAttribute(parameterAnnotationsData);
}
if (NULL != defaultAnnotationsData) {
writeAnnotationDefaultAttribute(defaultAnnotationsData);
}
if (NULL != typeAnnotationsData) {
writeTypeAnnotationsAttribute(typeAnnotationsData);
}
if (NULL != methodParametersData) {
U_8 parameterCount = methodParametersData->parameterCount;
J9MethodParameter * parameters = &methodParametersData->parameters;
writeAttributeHeader((J9UTF8 *) &METHODPARAMETERS, sizeof(U_8) + ((sizeof(U_16)+sizeof(U_16)) * parameterCount));
writeU8(parameterCount);
for (U_8 i = 0; i < parameterCount; i++) {
U_16 utfIndex = 0;
J9UTF8 * parameterName = SRP_GET(parameters[i].name, J9UTF8 *);
if (NULL != parameterName) {
utfIndex = indexForUTF8(parameterName);
}
writeU16(utfIndex);
writeU16(parameters[i].flags);
}
}
}
void
ClassFileWriter::writeMethods()
{
writeU16(U_16(_romClass->romMethodCount));
J9ROMMethod * method = J9ROMCLASS_ROMMETHODS(_romClass);
for (U_32 i = 0; i < _romClass->romMethodCount; i++) {
writeMethod(method);
method = nextROMMethod(method);
}
}
void
ClassFileWriter::writeAttributes()
{
U_16 attributesCount = 0;
J9UTF8 * outerClassName = J9ROMCLASS_OUTERCLASSNAME(_romClass);
J9UTF8 * simpleName = getSimpleNameForROMClass(_javaVM, NULL, _romClass);
J9EnclosingObject * enclosingObject = getEnclosingMethodForROMClass(_javaVM, NULL, _romClass);
J9UTF8 * signature = getGenericSignatureForROMClass(_javaVM, NULL, _romClass);
J9UTF8 * sourceFileName = getSourceFileNameForROMClass(_javaVM, NULL, _romClass);
J9SourceDebugExtension * sourceDebugExtension = getSourceDebugExtensionForROMClass(_javaVM, NULL, _romClass);
U_32 * annotationsData = getClassAnnotationsDataForROMClass(_romClass);