support finally

src/main/java/haidnor/jvm/core/JavaExecutionEngine.java

@@ -3,7 +3,7 @@ package haidnor.jvm.core;
 
 import haidnor.jvm.instruction.Instruction;
 import haidnor.jvm.instruction.InstructionFactory;
-import haidnor.jvm.instruction.control.RETURN;
+import haidnor.jvm.instruction.control.*;
 import haidnor.jvm.rtda.KlassMethod;
 import haidnor.jvm.runtime.Frame;
 import haidnor.jvm.runtime.JVMThread;
@@ -95,7 +95,7 @@ public class JavaExecutionEngine {
             Instruction instruction = instructionMap.get(i);
             log.debug("{}│ {}", blank, instruction);
             instruction.execute(frame);
-            if (instruction instanceof RETURN) {
+            if (instruction instanceof RETURN || instruction instanceof ARETURN || instruction instanceof DRETURN || instruction instanceof FRETURN || instruction instanceof IRETURN) {
                 break;
             }
             i += instruction.offSet();

src/main/java/haidnor/jvm/instruction/InstructionFactory.java

@@ -595,7 +595,7 @@ public abstract class InstructionFactory {
                 return new ARRAYLENGTH(codeStream);
             }
             case Const.ATHROW -> {
-                throw new Error("Not support JavaVM opcode ATHROW");
+                return new ATHROW(codeStream);
             }
             case Const.CHECKCAST -> {
                 return new CHECKCAST(codeStream);

src/main/java/haidnor/jvm/instruction/references/ATHROW.java

@@ -0,0 +1,20 @@
+package haidnor.jvm.instruction.references;
+
+import haidnor.jvm.instruction.Instruction;
+import haidnor.jvm.runtime.Frame;
+import haidnor.jvm.util.CodeStream;
+import lombok.SneakyThrows;
+
+public class ATHROW extends Instruction {
+
+    public ATHROW(CodeStream codeStream) {
+        super(codeStream);
+    }
+
+    @Override
+    @SneakyThrows
+    public void execute(Frame frame) {
+
+    }
+
+}

src/test/java/haidnor/jvm/test/TestJVM.java

@@ -70,6 +70,11 @@ public class TestJVM {
         runMainClass(Demo6.class);
     }
 
+    @Test
+    public void test_7() throws Exception {
+        runMainClass(Demo7.class);
+    }
+
     @Test
     public void test_NEW() throws Exception {
         runMainClass(NEW.class);

src/test/java/haidnor/jvm/test/demo/Demo7.java

@@ -0,0 +1,20 @@
+package haidnor.jvm.test.demo;
+
+
+public class Demo7 {
+
+    public static void main(String[] args) {
+        String fun = fun();
+        System.out.println(fun);
+    }
+
+    public static String fun() {
+        String str = "hello";
+        try {
+            return str;
+        } finally {
+            System.out.println("zhangsan");
+        }
+    }
+
+}