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de.unkrig.commons.asm.OpcodeUtil Maven / Gradle / Ivy
/*
* de.unkrig.commons - A general-purpose Java class library
*
* Copyright (c) 2011, Arno Unkrig
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
* following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package de.unkrig.commons.asm;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;
import org.objectweb.asm.tree.AbstractInsnNode;
import de.unkrig.commons.nullanalysis.Nullable;
/**
* Utility class around {@link org.objectweb.asm.Opcodes}.
*/
public final
class OpcodeUtil {
private
OpcodeUtil() {}
private static final String[] OPCODE_NAMES = {
"NOP", "ACONST_NULL", "ICONST_M1", "ICONST_0", "ICONST_1", "ICONST_2", "ICONST_3", "ICONST_4",
"ICONST_5", "LCONST_0", "LCONST_1", "FCONST_0", "FCONST_1", "FCONST_2", "DCONST_0", "DCONST_1 = 15",
"BIPUSH", "SIPUSH", "LDC", "LDC_W", "LDC2_W", "ILOAD", "LLOAD", "FLOAD",
"DLOAD", "ALOAD", "ILOAD_0", "ILOAD_1", "ILOAD_2", "ILOAD_3", "LLOAD_0", "LLOAD_1",
"LLOAD_2", "LLOAD_3", "FLOAD_0", "FLOAD_1", "FLOAD_2", "FLOAD_3", "DLOAD_0", "DLOAD_1",
"DLOAD_2", "DLOAD_3", "ALOAD_0", "ALOAD_1", "ALOAD_2", "ALOAD_3", "IALOAD", "LALOAD",
"FALOAD", "DALOAD", "AALOAD", "BALOAD", "CALOAD", "SALOAD", "ISTORE", "LSTORE",
"FSTORE", "DSTORE", "ASTORE", "ISTORE_0", "ISTORE_1", "ISTORE_2", "ISTORE_3", "LSTORE_0",
"LSTORE_1", "LSTORE_2", "LSTORE_3", "FSTORE_0", "FSTORE_1", "FSTORE_2", "FSTORE_3", "DSTORE_0",
"DSTORE_1", "DSTORE_2", "DSTORE_3", "ASTORE_0", "ASTORE_1", "ASTORE_2", "ASTORE_3", "IASTORE",
"LASTORE", "FASTORE", "DASTORE", "AASTORE", "BASTORE", "CASTORE", "SASTORE", "POP",
"POP2", "DUP", "DUP_X1", "DUP_X2", "DUP2", "DUP2_X1", "DUP2_X2", "SWAP",
"IADD", "LADD", "FADD", "DADD", "ISUB", "LSUB", "FSUB", "DSUB",
"IMUL", "LMUL", "FMUL", "DMUL", "IDIV", "LDIV", "FDIV", "DDIV",
"IREM", "LREM", "FREM", "DREM", "INEG", "LNEG", "FNEG", "DNEG",
"ISHL", "LSHL", "ISHR", "LSHR", "IUSHR", "LUSHR", "IAND", "LAND",
"IOR", "LOR", "IXOR", "LXOR", "IINC", "I2L", "I2F", "I2D",
"L2I", "L2F", "L2D", "F2I", "F2L", "F2D", "D2I", "D2L",
"D2F", "I2B", "I2C", "I2S", "LCMP", "FCMPL", "FCMPG", "DCMPL",
"DCMPG", "IFEQ", "IFNE", "IFLT", "IFGE", "IFGT", "IFLE", "IF_ICMPEQ",
"IF_ICMPNE", "IF_ICMPLT", "IF_ICMPGE", "IF_ICMPGT", "IF_ICMPLE", "IF_ACMPEQ", "IF_ACMPNE", "GOTO",
"JSR", "RET", "TABLESWITCH", "LOOKUPSWITCH", "IRETURN", "LRETURN", "FRETURN", "DRETURN",
"ARETURN", "RETURN", "GETSTATIC", "PUTSTATIC", "GETFIELD", "PUTFIELD", "INVOKEVIRTUAL", "INVOKESPECIAL",
"INVOKESTATIC", "INVOKEINTERFACE", "INVOKEDYNAMIC", "NEW", "NEWARRAY", "ANEWARRAY", "ARRAYLENGTH", "ATHROW",
"CHECKCAST", "INSTANCEOF", "MONITORENTER", "MONITOREXIT", "WIDE", "MULTIANEWARRAY", "IFNULL", "IFNONNULL",
"GOTO_W", "JSR_W", null, null, null, null, null, null,
null, null, null, null, null, null, null, null,
null, null, null, null, null, null, null, null,
null, null, null, null, null, null, null, null,
null, null, null, null, null, null, null, null,
null, null, null, null, null, null, null, null,
null, null, null, null, null, null, null, null,
};
/**
* @return The name of the opcode of the given {@link AbstractInsnNode}
*/
public static String
getName(AbstractInsnNode ain) {
return OpcodeUtil.OPCODE_NAMES[ain.getOpcode()];
}
/**
* Description of a Java™ bytecode instruction.
*/
public static final
class InsnDescription {
/**
* The types of the instructions's operands.
*/
@Nullable public final Type[] argumentOperandTypes;
/**
* The type of the instruction's result operand (or {@code null}).
*/
@Nullable public final Type resultOperandType;
public
InsnDescription(@Nullable Type[] argumentOperandTypes, @Nullable Type resultOperandType) {
this.argumentOperandTypes = argumentOperandTypes;
this.resultOperandType = resultOperandType;
}
}
private static final InsnDescription[] INSN_DESCRIPTIONS = new InsnDescription[256];
static { OpcodeUtil.initDescriptions(); }
private static void
initDescriptions() {
OpcodeUtil.addRInsn(Type.INT_TYPE, Opcodes.ILOAD);
OpcodeUtil.addRInsn(Type.LONG_TYPE, Opcodes.LLOAD);
OpcodeUtil.addRInsn(Type.FLOAT_TYPE, Opcodes.FLOAD);
OpcodeUtil.addRInsn(Type.DOUBLE_TYPE, Opcodes.DLOAD);
OpcodeUtil.addRInsn(Types.OBJECT_TYPE, Opcodes.ALOAD);
OpcodeUtil.addAInsn(Type.INT_TYPE, Opcodes.ISTORE);
OpcodeUtil.addAInsn(Type.LONG_TYPE, Opcodes.LSTORE);
OpcodeUtil.addAInsn(Type.FLOAT_TYPE, Opcodes.FSTORE);
OpcodeUtil.addAInsn(Type.DOUBLE_TYPE, Opcodes.DSTORE);
OpcodeUtil.addAInsn(Types.OBJECT_TYPE, Opcodes.ASTORE);
OpcodeUtil.addAARInsn(Types.INT_ARRAY_TYPE, Type.INT_TYPE, Type.INT_TYPE, Opcodes.IALOAD);
OpcodeUtil.addAARInsn(Types.LONG_ARRAY_TYPE, Type.INT_TYPE, Type.LONG_TYPE, Opcodes.LALOAD);
OpcodeUtil.addAARInsn(Types.FLOAT_ARRAY_TYPE, Type.INT_TYPE, Type.FLOAT_TYPE, Opcodes.FALOAD);
OpcodeUtil.addAARInsn(Types.DOUBLE_ARRAY_TYPE, Type.INT_TYPE, Type.DOUBLE_TYPE, Opcodes.DALOAD);
OpcodeUtil.addAARInsn(Types.REFERENCE_ARRAY_TYPE, Type.INT_TYPE, Types.OBJECT_TYPE, Opcodes.AALOAD);
OpcodeUtil.addAARInsn(Types.BYTE_ARRAY_TYPE, Type.INT_TYPE, Type.BYTE_TYPE, Opcodes.BALOAD);
OpcodeUtil.addAARInsn(Types.CHAR_ARRAY_TYPE, Type.INT_TYPE, Type.CHAR_TYPE, Opcodes.CALOAD);
OpcodeUtil.addAARInsn(Types.SHORT_ARRAY_TYPE, Type.INT_TYPE, Type.SHORT_TYPE, Opcodes.SALOAD);
OpcodeUtil.addAAAInsn(Types.INT_ARRAY_TYPE, Type.INT_TYPE, Type.INT_TYPE, Opcodes.IASTORE);
OpcodeUtil.addAAAInsn(Types.LONG_ARRAY_TYPE, Type.INT_TYPE, Type.LONG_TYPE, Opcodes.LASTORE);
OpcodeUtil.addAAAInsn(Types.FLOAT_ARRAY_TYPE, Type.INT_TYPE, Type.LONG_TYPE, Opcodes.FASTORE);
OpcodeUtil.addAAAInsn(Types.DOUBLE_ARRAY_TYPE, Type.INT_TYPE, Type.DOUBLE_TYPE, Opcodes.DASTORE);
OpcodeUtil.addAAAInsn(Types.REFERENCE_ARRAY_TYPE, Type.INT_TYPE, Types.OBJECT_TYPE, Opcodes.AASTORE);
OpcodeUtil.addAAAInsn(Types.BYTE_ARRAY_TYPE, Type.INT_TYPE, Type.BYTE_TYPE, Opcodes.BASTORE);
OpcodeUtil.addAAAInsn(Types.CHAR_ARRAY_TYPE, Type.INT_TYPE, Type.CHAR_TYPE, Opcodes.CASTORE);
OpcodeUtil.addAAAInsn(Types.SHORT_ARRAY_TYPE, Type.INT_TYPE, Type.SHORT_TYPE, Opcodes.SASTORE);
// SUPPRESS CHECKSTYLE LineLength:4
OpcodeUtil.addAARInsn(Type.INT_TYPE, Type.INT_TYPE, Type.INT_TYPE, Opcodes.IADD, Opcodes.ISUB, Opcodes.IMUL, Opcodes.IDIV, Opcodes.IREM, Opcodes.IAND, Opcodes.IOR, Opcodes.IXOR);
OpcodeUtil.addAARInsn(Type.LONG_TYPE, Type.LONG_TYPE, Type.LONG_TYPE, Opcodes.LADD, Opcodes.LSUB, Opcodes.LMUL, Opcodes.LDIV, Opcodes.LREM, Opcodes.LAND, Opcodes.LOR, Opcodes.LXOR);
OpcodeUtil.addAARInsn(Type.FLOAT_TYPE, Type.FLOAT_TYPE, Type.FLOAT_TYPE, Opcodes.FADD, Opcodes.FSUB, Opcodes.FMUL, Opcodes.FDIV, Opcodes.FREM);
OpcodeUtil.addAARInsn(Type.DOUBLE_TYPE, Type.DOUBLE_TYPE, Type.DOUBLE_TYPE, Opcodes.DADD, Opcodes.DSUB, Opcodes.DMUL, Opcodes.DDIV, Opcodes.DREM);
OpcodeUtil.addAARInsn(Type.LONG_TYPE, Type.LONG_TYPE, Type.INT_TYPE, Opcodes.LCMP);
OpcodeUtil.addAARInsn(Type.FLOAT_TYPE, Type.FLOAT_TYPE, Type.INT_TYPE, Opcodes.FCMPG, Opcodes.FCMPL);
OpcodeUtil.addAARInsn(Type.DOUBLE_TYPE, Type.DOUBLE_TYPE, Type.INT_TYPE, Opcodes.DCMPG, Opcodes.DCMPL);
OpcodeUtil.addARInsn(Type.INT_TYPE, Type.INT_TYPE, Opcodes.INEG);
OpcodeUtil.addARInsn(Type.LONG_TYPE, Type.LONG_TYPE, Opcodes.LNEG);
OpcodeUtil.addARInsn(Type.FLOAT_TYPE, Type.FLOAT_TYPE, Opcodes.FNEG);
OpcodeUtil.addARInsn(Type.DOUBLE_TYPE, Type.DOUBLE_TYPE, Opcodes.DNEG);
OpcodeUtil.addAARInsn(Type.INT_TYPE, Type.INT_TYPE, Type.INT_TYPE, Opcodes.ISHL, Opcodes.ISHR, Opcodes.IUSHR);
OpcodeUtil.addAARInsn(Type.LONG_TYPE, Type.INT_TYPE, Type.LONG_TYPE, Opcodes.LSHL, Opcodes.LSHR, Opcodes.LUSHR);
OpcodeUtil.addAAInsn(Type.INT_TYPE, Type.INT_TYPE, Opcodes.IF_ICMPEQ, Opcodes.IF_ICMPNE, Opcodes.IF_ICMPLT, Opcodes.IF_ICMPGE, Opcodes.IF_ICMPGT, Opcodes.IF_ICMPLE); // SUPPRESS CHECKSTYLE LineLength
OpcodeUtil.addAAInsn(Types.OBJECT_TYPE, Types.OBJECT_TYPE, Opcodes.IF_ACMPEQ, Opcodes.IF_ACMPNE);
OpcodeUtil.addARInsn(Type.INT_TYPE, Type.LONG_TYPE, Opcodes.I2L);
OpcodeUtil.addARInsn(Type.INT_TYPE, Type.FLOAT_TYPE, Opcodes.I2F);
OpcodeUtil.addARInsn(Type.INT_TYPE, Type.DOUBLE_TYPE, Opcodes.I2D);
OpcodeUtil.addARInsn(Type.INT_TYPE, Type.BYTE_TYPE, Opcodes.I2B);
OpcodeUtil.addARInsn(Type.INT_TYPE, Type.CHAR_TYPE, Opcodes.I2C);
OpcodeUtil.addARInsn(Type.INT_TYPE, Type.SHORT_TYPE, Opcodes.I2S);
OpcodeUtil.addARInsn(Type.LONG_TYPE, Type.INT_TYPE, Opcodes.L2I);
OpcodeUtil.addARInsn(Type.LONG_TYPE, Type.FLOAT_TYPE, Opcodes.L2F);
OpcodeUtil.addARInsn(Type.LONG_TYPE, Type.DOUBLE_TYPE, Opcodes.L2D);
OpcodeUtil.addARInsn(Type.FLOAT_TYPE, Type.INT_TYPE, Opcodes.F2I);
OpcodeUtil.addARInsn(Type.FLOAT_TYPE, Type.LONG_TYPE, Opcodes.F2L);
OpcodeUtil.addARInsn(Type.FLOAT_TYPE, Type.DOUBLE_TYPE, Opcodes.F2D);
OpcodeUtil.addARInsn(Type.DOUBLE_TYPE, Type.INT_TYPE, Opcodes.D2I);
OpcodeUtil.addARInsn(Type.DOUBLE_TYPE, Type.LONG_TYPE, Opcodes.D2L);
OpcodeUtil.addARInsn(Type.DOUBLE_TYPE, Type.FLOAT_TYPE, Opcodes.D2F);
OpcodeUtil.addAInsn(Type.INT_TYPE, Opcodes.TABLESWITCH, Opcodes.LOOKUPSWITCH);
OpcodeUtil.addAInsn(Type.INT_TYPE, Opcodes.IRETURN);
OpcodeUtil.addAInsn(Type.LONG_TYPE, Opcodes.LRETURN);
OpcodeUtil.addAInsn(Type.FLOAT_TYPE, Opcodes.FRETURN);
OpcodeUtil.addAInsn(Type.DOUBLE_TYPE, Opcodes.DRETURN);
OpcodeUtil.addAInsn(Types.OBJECT_TYPE, Opcodes.ARETURN);
OpcodeUtil.addInsn(Opcodes.RETURN);
}
private static void
addInsn(int... opcodes) {
OpcodeUtil.addInsns(new InsnDescription(null, null), opcodes);
}
private static void
addAInsn(Type argumentOperandType, int... opcodes) {
OpcodeUtil.addInsns(new InsnDescription(new Type[] { argumentOperandType }, null), opcodes);
}
private static void
// SUPPRESS CHECKSTYLE AbbreviationAsWordInName
addARInsn(Type argumentOperandType, Type resultOperandType, int... opcodes) {
OpcodeUtil.addInsns(new InsnDescription(new Type[] { argumentOperandType }, resultOperandType), opcodes);
}
private static void
// SUPPRESS CHECKSTYLE AbbreviationAsWordInName
addAAInsn(Type argumentOperandType1, Type argumentOperandType2, int... opcodes) {
OpcodeUtil.addInsns(
new InsnDescription(new Type[] { argumentOperandType1, argumentOperandType2 }, null),
opcodes
);
}
private static void
// SUPPRESS CHECKSTYLE AbbreviationAsWordInName
addAARInsn(Type argumentOperandType1, Type argumentOperandType2, Type resultOperandType, int... opcodes) {
OpcodeUtil.addInsns(
new InsnDescription(new Type[] { argumentOperandType1, argumentOperandType2 }, resultOperandType),
opcodes
);
}
private static void
// SUPPRESS CHECKSTYLE AbbreviationAsWordInName
addAAAInsn(Type argumentOperandType1, Type argumentOperandType2, Type argumentOperandType3, int... opcodes) {
OpcodeUtil.addInsns(
new InsnDescription(new Type[] { argumentOperandType1, argumentOperandType2, argumentOperandType3 }, null),
opcodes
);
}
private static void
addRInsn(Type resultOperandType, int... opcodes) {
OpcodeUtil.addInsns(new InsnDescription(null, resultOperandType), opcodes);
}
private static void
addInsns(InsnDescription insnDescription, int... opcodes) {
for (int opcode : opcodes) {
assert OpcodeUtil.INSN_DESCRIPTIONS[opcode] == null;
OpcodeUtil.INSN_DESCRIPTIONS[opcode] = insnDescription;
}
}
/**
* @return Metainformation about the given opcode
*/
public static InsnDescription
getInsnDescription(int opcode) {
return OpcodeUtil.INSN_DESCRIPTIONS[opcode];
}
}
