--- /dev/null
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * 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 dasm;
+
+import com.android.dx.dex.code.DalvOps;
+import com.android.dx.dex.code.Dop;
+import com.android.dx.dex.code.Dops;
+import com.android.dx.dex.code.InsnFormat;
+import com.android.dx.dex.code.form.Form10t;
+import com.android.dx.dex.code.form.Form10x;
+import com.android.dx.dex.code.form.Form11n;
+import com.android.dx.dex.code.form.Form11x;
+import com.android.dx.dex.code.form.Form12x;
+import com.android.dx.dex.code.form.Form20t;
+import com.android.dx.dex.code.form.Form21c;
+import com.android.dx.dex.code.form.Form21h;
+import com.android.dx.dex.code.form.Form21s;
+import com.android.dx.dex.code.form.Form21t;
+import com.android.dx.dex.code.form.Form22b;
+import com.android.dx.dex.code.form.Form22c;
+import com.android.dx.dex.code.form.Form22s;
+import com.android.dx.dex.code.form.Form22t;
+import com.android.dx.dex.code.form.Form22x;
+import com.android.dx.dex.code.form.Form23x;
+import com.android.dx.dex.code.form.Form30t;
+import com.android.dx.dex.code.form.Form31c;
+import com.android.dx.dex.code.form.Form31i;
+import com.android.dx.dex.code.form.Form31t;
+import com.android.dx.dex.code.form.Form32x;
+import com.android.dx.dex.code.form.Form35c;
+import com.android.dx.dex.code.form.Form3rc;
+import com.android.dx.dex.code.form.Form51l;
+
+import java.util.Hashtable;
+
+/**
+ * Holds information about Dalvik opcodes and its parameters.
+ */
+class DopInfo {
+
+ // maps instruction name -> DopInfo object
+ static Hashtable<String, DopInfo> dopsTable;
+
+ // information maintained about each instruction:
+ public String name; // opcode name
+ public Dop opcode; // its opcode
+ public String args; // the argument code
+
+ public final static String ARG_REGISTER = "R";
+ public final static String ARG_TYPE = "T";
+ public final static String ARG_LITERAL = "I";
+ public final static String ARG_ADDRESS = "A";
+ public final static String ARG_FIELD = "F";
+ public final static String ARG_METHOD = "M";
+ public final static String ARG_INTFMETHOD = "Y";
+ public final static String ARG_STRING = "S";
+ public final static String ARG_REGLIST = "Z";
+ public final static String ARG_REGRANGE = "G";
+
+ /**
+ * define type of parameters each instruction has
+ */
+ public final static String ARG_REG_REG = ARG_REGISTER + ARG_REGISTER;
+ public final static String ARG_REG_REG_REG = ARG_REGISTER + ARG_REGISTER
+ + ARG_REGISTER;
+ public final static String ARG_REG_LITERAL = ARG_REGISTER + ARG_LITERAL;
+ public final static String ARG_REG_REG_LITERAL = ARG_REGISTER
+ + ARG_REGISTER + ARG_LITERAL;
+ public final static String ARG_REG_ADDRESS = ARG_REGISTER + ARG_ADDRESS;
+ public final static String ARG_REG_REG_ADDRESS = ARG_REGISTER
+ + ARG_REGISTER + ARG_ADDRESS;
+ public final static String ARG_REG_TYPE = ARG_REGISTER + ARG_TYPE;
+ public final static String ARG_REG_REG_TYPE = ARG_REGISTER + ARG_REGISTER
+ + ARG_TYPE;
+ public final static String ARG_REG_FIELD = ARG_REGISTER + ARG_FIELD;
+ public final static String ARG_REG_REG_FIELD = ARG_REGISTER + ARG_REGISTER
+ + ARG_FIELD;
+ public final static String ARG_REG_STRING = ARG_REGISTER + ARG_STRING;
+ public final static String ARG_REG_REG_STRING = ARG_REGISTER + ARG_REGISTER
+ + ARG_STRING;
+ public final static String ARG_REGLIST_TYPE = ARG_REGLIST + ARG_TYPE;
+ public final static String ARG_REGLIST_METHOD = ARG_REGLIST + ARG_METHOD;
+ public final static String ARG_REGLIST_INTFMETHOD = ARG_REGLIST
+ + ARG_INTFMETHOD;
+ public final static String ARG_REGRANGE_TYPE = ARG_REGRANGE + ARG_TYPE;
+ public final static String ARG_REGRANGE_METHOD = ARG_REGRANGE + ARG_METHOD;
+ public final static String ARG_REGRANGE_INTFMETHOD = ARG_REGRANGE
+ + ARG_INTFMETHOD;
+
+ public static DopInfo get(String name) {
+ return (DopInfo) dopsTable.get(name);
+ }
+
+ public static boolean contains(String name) {
+ return dopsTable.get(name) != null;
+ }
+
+ /**
+ * Adds new opcode to table
+ */
+ static private void add(String name, Dop opcode, String args) {
+ DopInfo info = new DopInfo();
+ info.name = name;
+ info.opcode = opcode;
+ info.args = args;
+ dopsTable.put(name, info);
+ }
+
+ static private String getArgsFormat(Dop dop) {
+ InsnFormat format = dop.getFormat();
+
+ if (format instanceof Form10x) return "";
+ if (format instanceof Form12x) return ARG_REG_REG;
+ if (format instanceof Form11n) return ARG_REG_LITERAL;
+ if (format instanceof Form11x) return ARG_REGISTER;
+ if (format instanceof Form10t || format instanceof Form20t)
+ return ARG_ADDRESS;
+ if (format instanceof Form22x) return ARG_REG_REG;
+ if (format instanceof Form21t) return ARG_REG_ADDRESS;
+ if (format instanceof Form21s) return ARG_REG_LITERAL;
+ if (format instanceof Form21h) return ARG_REG_LITERAL;
+ if (format instanceof Form21c) {
+ switch (dop.getOpcode()) {
+ case DalvOps.CONST_CLASS:
+ case DalvOps.CHECK_CAST:
+ case DalvOps.NEW_INSTANCE:
+ return ARG_REG_TYPE;
+ case DalvOps.SGET:
+ case DalvOps.SGET_WIDE:
+ case DalvOps.SGET_OBJECT:
+ case DalvOps.SGET_BOOLEAN:
+ case DalvOps.SGET_BYTE:
+ case DalvOps.SGET_CHAR:
+ case DalvOps.SGET_SHORT:
+ case DalvOps.SPUT:
+ case DalvOps.SPUT_WIDE:
+ case DalvOps.SPUT_OBJECT:
+ case DalvOps.SPUT_BOOLEAN:
+ case DalvOps.SPUT_BYTE:
+ case DalvOps.SPUT_CHAR:
+ case DalvOps.SPUT_SHORT:
+ return ARG_REG_FIELD;
+ default:
+ return ARG_REG_STRING;
+ }
+ }
+ if (format instanceof Form23x) return ARG_REG_REG_REG;
+ if (format instanceof Form22b) return ARG_REG_REG_LITERAL;
+ if (format instanceof Form22t) return ARG_REG_REG_ADDRESS;
+ if (format instanceof Form22s) return ARG_REG_REG_LITERAL;
+ if (format instanceof Form22c) {
+ switch (dop.getOpcode()) {
+ case DalvOps.INSTANCE_OF:
+ case DalvOps.NEW_ARRAY:
+ return ARG_REG_REG_TYPE;
+ case DalvOps.IGET:
+ case DalvOps.IGET_WIDE:
+ case DalvOps.IGET_OBJECT:
+ case DalvOps.IGET_BOOLEAN:
+ case DalvOps.IGET_BYTE:
+ case DalvOps.IGET_CHAR:
+ case DalvOps.IGET_SHORT:
+ case DalvOps.IPUT:
+ case DalvOps.IPUT_WIDE:
+ case DalvOps.IPUT_OBJECT:
+ case DalvOps.IPUT_BOOLEAN:
+ case DalvOps.IPUT_BYTE:
+ case DalvOps.IPUT_CHAR:
+ case DalvOps.IPUT_SHORT:
+ return ARG_REG_REG_FIELD;
+ default:
+ return ARG_REG_REG_STRING;
+ }
+ }
+ if (format instanceof Form30t) return ARG_ADDRESS;
+ if (format instanceof Form32x) return ARG_REG_REG;
+ if (format instanceof Form31i) return ARG_REG_LITERAL;
+ if (format instanceof Form31t) return ARG_REG_ADDRESS;
+ if (format instanceof Form31c) return ARG_REG_STRING;
+ if (format instanceof Form35c) {
+ switch (dop.getOpcode()) {
+ case DalvOps.INVOKE_VIRTUAL:
+ case DalvOps.INVOKE_SUPER:
+ case DalvOps.INVOKE_DIRECT:
+ case DalvOps.INVOKE_STATIC:
+ return ARG_REGLIST_METHOD;
+ case DalvOps.INVOKE_INTERFACE:
+ return ARG_REGLIST_INTFMETHOD;
+ default:
+ return ARG_REGLIST_TYPE;
+ }
+ }
+ if (format instanceof Form3rc) {
+ switch (dop.getOpcode()) {
+ case DalvOps.FILLED_NEW_ARRAY_RANGE:
+ return ARG_REGRANGE_TYPE;
+ case DalvOps.INVOKE_INTERFACE_RANGE:
+ return ARG_REGRANGE_INTFMETHOD;
+ default:
+ return ARG_REGRANGE_METHOD;
+ }
+ }
+ if (format instanceof Form51l) return ARG_REG_LITERAL; // not "RL" since
+ // it is
+ // processed as
+ // Number
+
+ return "";
+ }
+
+ /**
+ * dopsTable initialization
+ */
+ static {
+ dopsTable = new Hashtable<String, DopInfo>();
+
+ for (int i = 0; i < DalvOps.MAX_VALUE - DalvOps.MIN_VALUE + 1; i++) {
+ try {
+ Dop dop = Dops.get(i);
+ add(dop.getName(), dop, getArgsFormat(dop));
+ } catch (Exception e) {
+
+ }
+ }
+ }
+
+};
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