Loads

Author: Seggan

src/main/java/io/github/seggan/javaclasslib/attributes/code/instructions/JvmInstructions.java

@@ -9,25 +9,50 @@
 
 import javax.annotation.Nonnull;
 
+@SuppressWarnings("unused")
 public final class JvmInstructions {
     public static final NoArgInstruction ACONST_NULL = new NoArgInstruction(0x01);
     public static final BPInstruction ALOAD = new BPInstruction(0x19);
+    public static final NoArgInstruction ALOAD_0 = new NoArgInstruction(0x2a);
+    public static final NoArgInstruction ALOAD_1 = new NoArgInstruction(0x2b);
+    public static final NoArgInstruction ALOAD_2 = new NoArgInstruction(0x2c);
+    public static final NoArgInstruction ALOAD_3 = new NoArgInstruction(0x2d);
     public static final CPInstruction<ClassEntry> ANEWARRAY = new CPInstruction<>(0xbd);
     public static final NoArgInstruction ARETURN = new NoArgInstruction(0xb0);
     public static final BPInstruction ASTORE = new BPInstruction(0x3a);
+    public static final NoArgInstruction ASTORE_0 = new NoArgInstruction(0x4b);
+    public static final NoArgInstruction ASTORE_1 = new NoArgInstruction(0x4c);
+    public static final NoArgInstruction ASTORE_2 = new NoArgInstruction(0x4d);
+    public static final NoArgInstruction ASTORE_3 = new NoArgInstruction(0x4e);
     public static final BPInstruction BIPUSH = new BPInstruction(0x10);
     public static final NoArgInstruction DCONST_0 = new NoArgInstruction(0x0e);
     public static final NoArgInstruction DCONST_1 = new NoArgInstruction(0x0f);
     public static final BPInstruction DLOAD = new BPInstruction(0x18);
+    public static final NoArgInstruction DLOAD_0 = new NoArgInstruction(0x26);
+    public static final NoArgInstruction DLOAD_1 = new NoArgInstruction(0x27);
+    public static final NoArgInstruction DLOAD_2 = new NoArgInstruction(0x28);
+    public static final NoArgInstruction DLOAD_3 = new NoArgInstruction(0x29);
     public static final NoArgInstruction DRETURN = new NoArgInstruction(0xaf);
     public static final BPInstruction DSTORE = new BPInstruction(0x39);
+    public static final NoArgInstruction DSTORE_0 = new NoArgInstruction(0x47);
+    public static final NoArgInstruction DSTORE_1 = new NoArgInstruction(0x48);
+    public static final NoArgInstruction DSTORE_2 = new NoArgInstruction(0x49);
+    public static final NoArgInstruction DSTORE_3 = new NoArgInstruction(0x4a);
     public static final NoArgInstruction DUP = new NoArgInstruction(0x59);
     public static final NoArgInstruction FCONST_0 = new NoArgInstruction(0x0b);
     public static final NoArgInstruction FCONST_1 = new NoArgInstruction(0x0c);
     public static final NoArgInstruction FCONST_2 = new NoArgInstruction(0x0d);
     public static final BPInstruction FLOAD = new BPInstruction(0x17);
+    public static final NoArgInstruction FLOAD_0 = new NoArgInstruction(0x22);
+    public static final NoArgInstruction FLOAD_1 = new NoArgInstruction(0x23);
+    public static final NoArgInstruction FLOAD_2 = new NoArgInstruction(0x24);
+    public static final NoArgInstruction FLOAD_3 = new NoArgInstruction(0x25);
     public static final NoArgInstruction FRETURN = new NoArgInstruction(0xae);
     public static final BPInstruction FSTORE = new BPInstruction(0x38);
+    public static final NoArgInstruction FSTORE_0 = new NoArgInstruction(0x43);
+    public static final NoArgInstruction FSTORE_1 = new NoArgInstruction(0x44);
+    public static final NoArgInstruction FSTORE_2 = new NoArgInstruction(0x45);
+    public static final NoArgInstruction FSTORE_3 = new NoArgInstruction(0x46);
     public static final CPInstruction<FieldrefEntry> GETFIELD = new CPInstruction<>(0xb4);
     public static final CPInstruction<FieldrefEntry> GETSTATIC = new CPInstruction<>(0xb2);
     public static final BranchInstruction GOTO = new BranchInstruction(0xa7);
@@ -43,20 +68,37 @@ public final class JvmInstructions {
     public static final NoArgInstruction ICONST_5 = new NoArgInstruction(0x08);
     public static final NoArgInstruction ICONST_M1 = new NoArgInstruction(0x02);
     public static final BranchInstruction IFNE = new BranchInstruction(0x9a);
+    public static final TPInstruction IINC = new TPInstruction(0x84);
     public static final BPInstruction ILOAD = new BPInstruction(0x15);
+    public static final NoArgInstruction ILOAD_0 = new NoArgInstruction(0x1a);
+    public static final NoArgInstruction ILOAD_1 = new NoArgInstruction(0x1b);
+    public static final NoArgInstruction ILOAD_2 = new NoArgInstruction(0x1c);
+    public static final NoArgInstruction ILOAD_3 = new NoArgInstruction(0x1d);
     public static final CPInstruction<MethodrefEntry> INVOKESTATIC = new CPInstruction<>(0xb8);
     public static final CPInstruction<MethodrefEntry> INVOKEVIRTUAL = new CPInstruction<>(0xb6);
     public static final NoArgInstruction IRETURN = new NoArgInstruction(0xac);
     public static final BPInstruction ISTORE = new BPInstruction(0x36);
+    public static final NoArgInstruction ISTORE_0 = new NoArgInstruction(0x3b);
+    public static final NoArgInstruction ISTORE_1 = new NoArgInstruction(0x3c);
+    public static final NoArgInstruction ISTORE_2 = new NoArgInstruction(0x3d);
+    public static final NoArgInstruction ISTORE_3 = new NoArgInstruction(0x3e);
     public static final NoArgInstruction ISUB = new NoArgInstruction(0x64);
     public static final NoArgInstruction LCONST_0 = new NoArgInstruction(0x09);
     public static final NoArgInstruction LCONST_1 = new NoArgInstruction(0x0a);
     public static final CPInstruction<ConstantPoolEntry> LDC = new CPInstruction<>(0x12);
     public static final CPInstruction<ConstantPoolEntry> LDC2_W = new CPInstruction<>(0x14);
     public static final CPInstruction<ConstantPoolEntry> LDC_W = new CPInstruction<>(0x13);
     public static final BPInstruction LLOAD = new BPInstruction(0x16);
+    public static final NoArgInstruction LLOAD_0 = new NoArgInstruction(0x1e);
+    public static final NoArgInstruction LLOAD_1 = new NoArgInstruction(0x1f);
+    public static final NoArgInstruction LLOAD_2 = new NoArgInstruction(0x20);
+    public static final NoArgInstruction LLOAD_3 = new NoArgInstruction(0x21);
     public static final NoArgInstruction LRETURN = new NoArgInstruction(0xad);
     public static final BPInstruction LSTORE = new BPInstruction(0x37);
+    public static final NoArgInstruction LSTORE_0 = new NoArgInstruction(0x3f);
+    public static final NoArgInstruction LSTORE_1 = new NoArgInstruction(0x40);
+    public static final NoArgInstruction LSTORE_2 = new NoArgInstruction(0x41);
+    public static final NoArgInstruction LSTORE_3 = new NoArgInstruction(0x42);
     public static final CPInstruction<ClassEntry> NEW = new CPInstruction<>(0xbb);
     public static final BPInstruction NEWARRAY = new BPInstruction(0xbc);
     public static final NoArgInstruction NOP = new NoArgInstruction(0x00);
@@ -164,7 +206,7 @@ protected BranchInstructionImpl(@Nonnull JvmInstruction instruction, int offset)
             @Override
             public byte[] getBytes() {
                 byte[] bytes;
-                if (this.getInstruction().getInstructionByte() == GOTO.getInstructionByte() ) {
+                if (this.getInstruction().getInstructionByte() == GOTO.getInstructionByte()) {
                     bytes = new byte[]{(byte) offset};
                 } else {
                     bytes = ByteUtils.twoBytesFromInt(offset);
@@ -173,4 +215,33 @@ public byte[] getBytes() {
             }
         }
     }
+
+    public static final class TPInstruction extends JvmInstruction {
+
+        private TPInstruction(int instructionByte) {
+            super(instructionByte);
+        }
+
+        @Nonnull
+        public JvmInstructionImpl create(int index, int amount) {
+            return new TPInstructionImpl(this, index, amount);
+        }
+
+        private static final class TPInstructionImpl extends JvmInstructionImpl {
+
+            private final int index;
+            private final int amount;
+
+            protected TPInstructionImpl(@Nonnull JvmInstruction instruction, int index, int amount) {
+                super(instruction);
+                this.index = index;
+                this.amount = amount;
+            }
+
+            @Override
+            public byte[] getBytes() {
+                return new byte[]{getInstruction().getInstructionByte(), (byte) index, (byte) amount};
+            }
+        }
+    }
 }

src/test/java/io/github/seggan/javaclasslib/attributes/code/instructions/TestJvmInstructions.java

@@ -0,0 +1,32 @@
+package io.github.seggan.javaclasslib.attributes.code.instructions;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+import java.util.HashSet;
+import java.util.Set;
+
+public class TestJvmInstructions {
+
+    @Test
+    @DisplayName("Checks for instruction bytes used in more than one instructions to prevent copy-paste errors")
+    public void testNoDuplicates() throws IllegalAccessException {
+        Set<Byte> found = new HashSet<>();
+
+        for (Field field : JvmInstructions.class.getFields()) {
+            if (Modifier.isStatic(field.getModifiers()) && Modifier.isFinal(field.getModifiers())) {
+                byte b = ((JvmInstruction) field.get(null)).getInstructionByte();
+                if (found.contains(b)) {
+                    throw new AssertionError(String.format("Duplicate instruction byte 0x%s of instruction %s",
+                        Integer.toHexString(b),
+                        field.getName()
+                    ));
+                } else {
+                    found.add(b);
+                }
+            }
+        }
+    }
+}