public ResolvedJavaField lookupJavaField(Field reflectionField) {
String name = reflectionField.getName();
Class<?> fieldHolder = reflectionField.getDeclaringClass();
Class<?> fieldType = reflectionField.getType();
// java.lang.reflect.Field's modifiers should be enough here since VM internal modifier bits
// are not used (yet).
final int modifiers = reflectionField.getModifiers();
final long offset =
Modifier.isStatic(modifiers)
? UNSAFE.staticFieldOffset(reflectionField)
: UNSAFE.objectFieldOffset(reflectionField);
HotSpotResolvedObjectType holder = fromObjectClass(fieldHolder);
JavaType type = runtime.fromClass(fieldType);
if (offset != -1) {
HotSpotResolvedObjectType resolved = holder;
return resolved.createField(name, type, offset, modifiers);
} else {
throw new JVMCIError("unresolved field %s", reflectionField);
}
}
private static long offset(Field field) {
return isStatic(field) ? UNSAFE.staticFieldOffset(field) : UNSAFE.objectFieldOffset(field);
}
