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update README.md

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wangxiang
2023-07-26 09:35:32 +08:00
parent d7fdc95cf9
commit 390cc1559a
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README.md
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@@ -12,12 +12,14 @@
# 实现功能 # 实现功能
* 支持基本数据类型数学运算 * 支持基本数据类型数学运算
* 支持循环、条件结构代码 * 支持循环、条件结构代码、switch 语法（开发中...）
* 支持创建对象，访问对象 * 支持创建对象，访问对象
* 支持多态 * 支持多态继承、接口
* 支持反射 * 支持反射
* 支持 JDK 中自带的 Java 类
* 支持访问静态方法 * 支持访问静态方法
* 支持异常 * 支持异常
* lambda 表达式（开发中...）
# 局限性 # 局限性
* 不支持多线程 * 不支持多线程
@@ -94,623 +96,6 @@ public void test() throws Exception {
2. 编写一个 java 项目编译打包成 .jar 文件，例如 demo.jar。要求 .jar 文件中的 META-INF/MANIFEST.MF 文件内有 `Main-Class` 属性 (含有 public static void main(String[] args) 方法的主类信息) 2. 编写一个 java 项目编译打包成 .jar 文件，例如 demo.jar。要求 .jar 文件中的 META-INF/MANIFEST.MF 文件内有 `Main-Class` 属性 (含有 public static void main(String[] args) 方法的主类信息)
3. 使用 haidnorJVM 运行程序。执行命令 `java -jar haidnorJVM-1.0-SNAPSHOT.jar -class R:\demo.jar`。注意需要 jar 文件的绝对路径 3. 使用 haidnorJVM 运行程序。执行命令 `java -jar haidnorJVM-1.0-SNAPSHOT.jar -class R:\demo.jar`。注意需要 jar 文件的绝对路径
# 已实现的 JVM 指令
```java
public abstract class InstructionFactory {
public static Instruction creatInstruction(CodeStream codeStream) {
int opcode = codeStream.readJavaVmOpcode();
switch (opcode) {
case Const.NOP -> {
return new NOP(codeStream);
}
case Const.ACONST_NULL -> {
return new ACONST_NULL(codeStream);
}
case Const.ICONST_M1 -> {
return new ICONST_M1(codeStream);
}
case Const.ICONST_0 -> {
return new ICONST_0(codeStream);
}
case Const.ICONST_1 -> {
return new ICONST_1(codeStream);
}
case Const.ICONST_2 -> {
return new ICONST_2(codeStream);
}
case Const.ICONST_3 -> {
return new ICONST_3(codeStream);
}
case Const.ICONST_4 -> {
return new ICONST_4(codeStream);
}
case Const.ICONST_5 -> {
return new ICONST_5(codeStream);
}
case Const.LCONST_0 -> {
return new LCONST_0(codeStream);
}
case Const.LCONST_1 -> {
return new LCONST_1(codeStream);
}
case Const.FCONST_1 -> {
return new FCONST_1(codeStream);
}
case Const.FCONST_2 -> {
return new FCONST_2(codeStream);
}
case Const.DCONST_0 -> {
return new DCONST_0(codeStream);
}
case Const.DCONST_1 -> {
return new DCONST_1(codeStream);
}
case Const.BIPUSH -> {
return new BIPUSH(codeStream);
}
case Const.SIPUSH -> {
return new SIPUSH(codeStream);
}
case Const.LDC -> {
return new LDC(codeStream);
}
case Const.LDC_W -> {
return new LDC_W(codeStream);
}
case Const.LDC2_W -> {
return new LDC2W(codeStream);
}
case Const.ILOAD -> {
return new ILOAD(codeStream);
}
case Const.LLOAD -> {
return new LLOAD(codeStream);
}
case Const.FLOAD -> {
return new FLOAD(codeStream);
}
case Const.DLOAD -> {
return new DLOAD(codeStream);
}
case Const.ALOAD -> {
return new ALOAD(codeStream);
}
case Const.ILOAD_0 -> {
return new ILOAD_0(codeStream);
}
case Const.ILOAD_1 -> {
return new ILOAD_1(codeStream);
}
case Const.ILOAD_2 -> {
return new ILOAD_2(codeStream);
}
case Const.ILOAD_3 -> {
return new ILOAD_3(codeStream);
}
case Const.LLOAD_0 -> {
return new LLOAD_0(codeStream);
}
case Const.LLOAD_1 -> {
return new LLOAD_1(codeStream);
}
case Const.LLOAD_2 -> {
return new LLOAD_2(codeStream);
}
case Const.LLOAD_3 -> {
return new LLOAD_3(codeStream);
}
case Const.FLOAD_0 -> {
return new FLOAD_0(codeStream);
}
case Const.FLOAD_1 -> {
return new FLOAD_1(codeStream);
}
case Const.FLOAD_2 -> {
return new FLOAD_2(codeStream);
}
case Const.FLOAD_3 -> {
return new FLOAD_3(codeStream);
}
case Const.DLOAD_0 -> {
return new DLOAD_0(codeStream);
}
case Const.DLOAD_1 -> {
return new DLOAD_1(codeStream);
}
case Const.DLOAD_2 -> {
return new DLOAD_2(codeStream);
}
case Const.DLOAD_3 -> {
return new DLOAD_3(codeStream);
}
case Const.ALOAD_0 -> {
return new ALOAD_0(codeStream);
}
case Const.ALOAD_1 -> {
return new ALOAD_1(codeStream);
}
case Const.ALOAD_2 -> {
return new ALOAD_2(codeStream);
}
case Const.ALOAD_3 -> {
return new ALOAD_3(codeStream);
}
case Const.IALOAD -> {
return new IALOAD(codeStream);
}
case Const.LALOAD -> {
return new LALOAD(codeStream);
}
case Const.FALOAD -> {
return new FALOAD(codeStream);
}
case Const.DALOAD -> {
return new DALOAD(codeStream);
}
case Const.AALOAD -> {
return new AALOAD(codeStream);
}
case Const.BALOAD -> {
return new BALOAD(codeStream);
}
case Const.CALOAD -> {
return new CALOAD(codeStream);
}
case Const.SALOAD -> {
return new SALOAD(codeStream);
}
case Const.ISTORE -> {
return new ISTORE(codeStream);
}
case Const.LSTORE -> {
return new LSTORE(codeStream);
}
case Const.FSTORE -> {
return new FSTORE(codeStream);
}
case Const.DSTORE -> {
return new DSTORE(codeStream);
}
case Const.ASTORE -> {
return new ASTORE(codeStream);
}
case Const.ISTORE_0 -> {
return new ISTORE_0(codeStream);
}
case Const.ISTORE_1 -> {
return new ISTORE_1(codeStream);
}
case Const.ISTORE_2 -> {
return new ISTORE_2(codeStream);
}
case Const.ISTORE_3 -> {
return new ISTORE_3(codeStream);
}
case Const.LSTORE_0 -> {
return new LSTORE_0(codeStream);
}
case Const.LSTORE_1 -> {
return new LSTORE_1(codeStream);
}
case Const.LSTORE_2 -> {
return new LSTORE_2(codeStream);
}
case Const.LSTORE_3 -> {
return new LSTORE_3(codeStream);
}
case Const.FSTORE_0 -> {
return new FSTORE_0(codeStream);
}
case Const.FSTORE_1 -> {
return new FSTORE_1(codeStream);
}
case Const.FSTORE_2 -> {
return new FSTORE_2(codeStream);
}
case Const.FSTORE_3 -> {
return new FSTORE_3(codeStream);
}
case Const.DSTORE_0 -> {
return new DSTORE_0(codeStream);
}
case Const.DSTORE_1 -> {
return new DSTORE_1(codeStream);
}
case Const.DSTORE_2 -> {
return new DSTORE_2(codeStream);
}
case Const.DSTORE_3 -> {
return new DSTORE_3(codeStream);
}
case Const.ASTORE_0 -> {
return new ASTORE_0(codeStream);
}
case Const.ASTORE_1 -> {
return new ASTORE_1(codeStream);
}
case Const.ASTORE_2 -> {
return new ASTORE_2(codeStream);
}
case Const.ASTORE_3 -> {
return new ASTORE_3(codeStream);
}
case Const.IASTORE -> {
return new IASTORE(codeStream);
}
case Const.LASTORE -> {
return new LASTORE(codeStream);
}
case Const.FASTORE -> {
return new FASTORE(codeStream);
}
case Const.DASTORE -> {
return new DASTORE(codeStream);
}
case Const.AASTORE -> {
return new AASTORE(codeStream);
}
case Const.BASTORE -> {
return new BASTORE(codeStream);
}
case Const.CASTORE -> {
return new CASTORE(codeStream);
}
case Const.SASTORE -> {
return new SASTORE(codeStream);
}
case Const.POP -> {
return new POP(codeStream);
}
case Const.POP2 -> {
return new POP2(codeStream);
}
case Const.DUP -> {
return new DUP(codeStream);
}
case Const.DUP_X1 -> {
return new DUP_X1(codeStream);
}
case Const.DUP_X2 -> {
return new DUP_X2(codeStream);
}
case Const.DUP2 -> {
return new DUP2(codeStream);
}
case Const.DUP2_X1 -> {
return new DUP2_X1(codeStream);
}
case Const.DUP2_X2 -> {
return new DUP2_X2(codeStream);
}
case Const.SWAP -> {
return new SWAP(codeStream);
}
case Const.IADD -> {
return new IADD(codeStream);
}
case Const.LADD -> {
return new LADD(codeStream);
}
case Const.FADD -> {
return new FADD(codeStream);
}
case Const.DADD -> {
return new DADD(codeStream);
}
case Const.ISUB -> {
return new ISUB(codeStream);
}
case Const.LSUB -> {
return new LSUB(codeStream);
}
case Const.FSUB -> {
return new FSUB(codeStream);
}
case Const.DSUB -> {
return new DSUB(codeStream);
}
case Const.IMUL -> {
return new IMUL(codeStream);
}
case Const.LMUL -> {
return new LMUL(codeStream);
}
case Const.FMUL -> {
return new FMUL(codeStream);
}
case Const.DMUL -> {
return new DMUL(codeStream);
}
case Const.IDIV -> {
return new IDIV(codeStream);
}
case Const.LDIV -> {
return new LDIV(codeStream);
}
case Const.FDIV -> {
return new FDIV(codeStream);
}
case Const.DDIV -> {
return new DDIV(codeStream);
}
case Const.IREM -> {
return new IREM(codeStream);
}
case Const.LREM -> {
return new LREM(codeStream);
}
case Const.FREM -> {
return new FREM(codeStream);
}
case Const.DREM -> {
return new DREM(codeStream);
}
case Const.INEG -> {
return new INEG(codeStream);
}
case Const.LNEG -> {
return new LNEG(codeStream);
}
case Const.FNEG -> {
return new FNEG(codeStream);
}
case Const.DNEG -> {
return new DNEG(codeStream);
}
case Const.ISHL -> {
return new ISHL(codeStream);
}
case Const.LSHL -> {
return new LSHL(codeStream);
}
case Const.ISHR -> {
return new ISHR(codeStream);
}
case Const.LSHR -> {
return new LSHR(codeStream);
}
case Const.IUSHR -> {
return new IUSHR(codeStream);
}
case Const.LUSHR -> {
return new LUSHR(codeStream);
}
case Const.IAND -> {
return new IAND(codeStream);
}
case Const.LAND -> {
return new LAND(codeStream);
}
case Const.IOR -> {
return new IOR(codeStream);
}
case Const.LOR -> {
return new LOR(codeStream);
}
case Const.IXOR -> {
return new IXOR(codeStream);
}
case Const.LXOR -> {
return new LXOR(codeStream);
}
case Const.IINC -> {
return new IINC(codeStream);
}
case Const.I2L -> {
return new I2L(codeStream);
}
case Const.I2F -> {
return new I2F(codeStream);
}
case Const.I2D -> {
return new I2D(codeStream);
}
case Const.L2I -> {
return new L2I(codeStream);
}
case Const.L2F -> {
return new L2F(codeStream);
}
case Const.L2D -> {
return new L2D(codeStream);
}
case Const.F2I -> {
return new F2I(codeStream);
}
case Const.F2L -> {
return new F2L(codeStream);
}
case Const.F2D -> {
return new F2D(codeStream);
}
case Const.D2I -> {
return new D2I(codeStream);
}
case Const.D2L -> {
return new D2L(codeStream);
}
case Const.D2F -> {
return new D2F(codeStream);
}
case Const.I2B -> {
return new I2B(codeStream);
}
case Const.I2C -> {
return new I2C(codeStream);
}
case Const.I2S -> {
return new I2S(codeStream);
}
case Const.LCMP -> {
return new LCMP(codeStream);
}
case Const.FCMPL -> {
return new FCMPL(codeStream);
}
case Const.FCMPG -> {
return new FCMPG(codeStream);
}
case Const.DCMPL -> {
return new DCMPL(codeStream);
}
case Const.DCMPG -> {
return new DCMPG(codeStream);
}
case Const.IFEQ -> {
return new IFEQ(codeStream);
}
case Const.IFNE -> {
return new IFNE(codeStream);
}
case Const.IFLT -> {
return new IFLT(codeStream);
}
case Const.IFGE -> {
return new IFGE(codeStream);
}
case Const.IFGT -> {
return new IFGT(codeStream);
}
case Const.IFLE -> {
return new IFLE(codeStream);
}
case Const.IF_ICMPEQ -> {
return new IF_ICMPEQ(codeStream);
}
case Const.IF_ICMPNE -> {
return new IF_ICMPNE(codeStream);
}
case Const.IF_ICMPLT -> {
return new IF_ICMPLT(codeStream);
}
case Const.IF_ICMPGE -> {
return new IF_ICMPGE(codeStream);
}
case Const.IF_ICMPGT -> {
return new IF_ICMPGT(codeStream);
}
case Const.IF_ICMPLE -> {
return new IF_ICMPLE(codeStream);
}
case Const.IF_ACMPEQ -> {
return new IF_ACMPEQ(codeStream);
}
case Const.IF_ACMPNE -> {
return new IF_ACMPNE(codeStream);
}
case Const.GOTO -> {
return new GOTO(codeStream);
}
case Const.JSR -> {
return new JSR(codeStream);
}
case Const.RET -> {
return new RET(codeStream);
}
case Const.TABLESWITCH -> {
throw new Error("Not support JavaVM opcode TABLESWITCH");
}
case Const.LOOKUPSWITCH -> {
throw new Error("Not support JavaVM opcode LOOKUPSWITCH");
}
case Const.IRETURN -> {
return new IRETURN(codeStream);
}
case Const.LRETURN -> {
return new LRETURN(codeStream);
}
case Const.FRETURN -> {
return new FRETURN(codeStream);
}
case Const.DRETURN -> {
return new DRETURN(codeStream);
}
case Const.ARETURN -> {
return new ARETURN(codeStream);
}
case Const.RETURN -> {
return new RETURN(codeStream);
}
case Const.GETSTATIC -> {
return new GETSTATIC(codeStream);
}
case Const.PUTSTATIC -> {
return new PUTSTATIC(codeStream);
}
case Const.GETFIELD -> {
return new GETFIELD(codeStream);
}
case Const.PUTFIELD -> {
return new PUTFIELD(codeStream);
}
case Const.INVOKEVIRTUAL -> {
return new INVOKEVIRTUAL(codeStream);
}
case Const.INVOKESPECIAL -> {
return new INVOKESPECIAL(codeStream);
}
case Const.INVOKESTATIC -> {
return new INVOKESTATIC(codeStream);
}
case Const.INVOKEINTERFACE -> {
throw new Error("Not support JavaVM opcode INVOKEINTERFACE");
}
case Const.INVOKEDYNAMIC -> {
throw new Error("Not support JavaVM opcode INVOKEDYNAMIC");
}
case Const.NEW -> {
return new NEW(codeStream);
}
case Const.NEWARRAY -> {
return new NEWARRAY(codeStream);
}
case Const.ANEWARRAY -> {
return new ANEWARRAY(codeStream);
}
case Const.ARRAYLENGTH -> {
return new ARRAYLENGTH(codeStream);
}
case Const.ATHROW -> {
throw new Error("Not support JavaVM opcode ATHROW");
}
case Const.CHECKCAST -> {
return new CHECKCAST(codeStream);
}
case Const.INSTANCEOF -> {
return new INSTANCEOF(codeStream);
}
case Const.MONITORENTER -> {
throw new Error("Not support JavaVM opcode MONITORENTER");
}
case Const.MONITOREXIT -> {
throw new Error("Not support JavaVM opcode MONITOREXIT");
}
case Const.WIDE -> {
throw new Error("Not support JavaVM opcode WIDE");
}
case Const.MULTIANEWARRAY -> {
throw new Error("Not support JavaVM opcode MULTIANEWARRAY");
}
case Const.IFNULL -> {
return new IFNULL(codeStream);
}
case Const.IFNONNULL -> {
return new IFNONNULL(codeStream);
}
case Const.GOTO_W -> {
return new GOTO_W(codeStream);
}
case Const.JSR_W -> {
return new JSR_W(codeStream);
}
default -> throw new Error("Unknown JavaVM opcode " + opcode);
}
}
}
```
# 联系作者 # 联系作者
微信账号: haidnor (请备注 "JVM")
![](/readme/20230721181408.png ) ![](/readme/20230721181408.png )
微信号: haidnor

6
src/main/java/haidnor/jvm/instruction/InstructionFactory.java
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@@ -529,10 +529,10 @@ public abstract class InstructionFactory {
return new RET(codeStream); return new RET(codeStream);
} }
case Const.TABLESWITCH -> { case Const.TABLESWITCH -> {
throw new Error("Not support JavaVM opcode TABLESWITCH"); return new TABLESWITCH(codeStream); // TODO
} }
case Const.LOOKUPSWITCH -> { case Const.LOOKUPSWITCH -> {
throw new Error("Not support JavaVM opcode LOOKUPSWITCH"); return new LOOKUPSWITCH(codeStream); // TODO
} }
case Const.IRETURN -> { case Const.IRETURN -> {
return new IRETURN(codeStream); return new IRETURN(codeStream);
@@ -577,7 +577,7 @@ public abstract class InstructionFactory {
return new INVOKEINTERFACE(codeStream); return new INVOKEINTERFACE(codeStream);
} }
case Const.INVOKEDYNAMIC -> { case Const.INVOKEDYNAMIC -> {
throw new Error("Not support JavaVM opcode INVOKEDYNAMIC"); return new INVOKEDYNAMIC(codeStream); // TODO
} }
case Const.NEW -> { case Const.NEW -> {
return new NEW(codeStream); return new NEW(codeStream);

19
src/main/java/haidnor/jvm/instruction/control/LOOKUPSWITCH.java Normal file
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@@ -0,0 +1,19 @@
package haidnor.jvm.instruction.control;
import haidnor.jvm.instruction.Instruction;
import haidnor.jvm.runtime.Frame;
import haidnor.jvm.util.CodeStream;
public class LOOKUPSWITCH extends Instruction {
public LOOKUPSWITCH(CodeStream codeStream) {
super(codeStream);
throw new UnsupportedOperationException("LOOKUPSWITCH");
}
@Override
public void execute(Frame frame) {
throw new UnsupportedOperationException("LOOKUPSWITCH");
}
}

19
src/main/java/haidnor/jvm/instruction/control/TABLESWITCH.java Normal file
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@@ -0,0 +1,19 @@
package haidnor.jvm.instruction.control;
import haidnor.jvm.instruction.Instruction;
import haidnor.jvm.runtime.Frame;
import haidnor.jvm.util.CodeStream;
public class TABLESWITCH extends Instruction {
public TABLESWITCH(CodeStream codeStream) {
super(codeStream);
throw new UnsupportedOperationException("TABLESWITCH");
}
@Override
public void execute(Frame frame) {
throw new UnsupportedOperationException("TABLESWITCH");
}
}

21
src/main/java/haidnor/jvm/instruction/references/INVOKEDYNAMIC.java Normal file
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@@ -0,0 +1,21 @@
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 INVOKEDYNAMIC extends Instruction {
public INVOKEDYNAMIC(CodeStream codeStream) {
super(codeStream);
throw new UnsupportedOperationException("INVOKEDYNAMIC");
}
@Override
@SneakyThrows
public void execute(Frame frame) {
throw new UnsupportedOperationException("INVOKEDYNAMIC");
}
}