/* ### * IP: GHIDRA * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package ghidra.javaclass.format.constantpool; import java.io.IOException; import ghidra.app.util.bin.BinaryReader; import ghidra.app.util.bin.StructConverter; /** * NOTE: THE FOLLOWING TEXT EXTRACTED FROM JVMS7.PDF * <p> * Java virtual machine instructions do not rely on the runtime layout of classes, * interfaces, class instances, or arrays. Instead, instructions refer to symbolic * information in the constant_pool table. * <p> * All constant_pool table entries have the following general format: * <pre> * cp_info { * u1 tag; * u1 info[]; * } * </pre> * Each item in the constant_pool table must begin with a 1-byte tag indicating * the kind of cp_info entry. The contents of the info array vary with the value of * tag. The valid tags and their values are listed in Table 4.3. Each tag byte must be * followed by two or more bytes giving information about the specific constant. The * format of the additional information varies with the tag value. * */ public abstract class AbstractConstantPoolInfoJava implements StructConverter { private long _offset; private byte tag; protected AbstractConstantPoolInfoJava(BinaryReader reader) throws IOException { _offset = reader.getPointerIndex(); tag = reader.readNextByte(); } public long getOffset() { return _offset; } public byte getTag() { return tag; } }