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add WIDE Instruction

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wangxiang
2023-07-26 09:26:55 +08:00
parent ef5dda57c5
commit d7fdc95cf9
2 changed files with 41 additions and 1 deletions
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2
src/main/java/haidnor/jvm/instruction/InstructionFactory.java
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@@ -607,7 +607,7 @@ public abstract class InstructionFactory {
return new MONITOREXIT(codeStream); return new MONITOREXIT(codeStream);
} }
case Const.WIDE -> { case Const.WIDE -> {
throw new Error("Not support JavaVM opcode WIDE"); return new WIDE(codeStream);
} }
case Const.MULTIANEWARRAY -> { case Const.MULTIANEWARRAY -> {
return new MULTIANEWARRAY(codeStream); return new MULTIANEWARRAY(codeStream);

40
src/main/java/haidnor/jvm/instruction/extended/WIDE.java Normal file
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@@ -0,0 +1,40 @@
package haidnor.jvm.instruction.extended;
import haidnor.jvm.instruction.Instruction;
import haidnor.jvm.instruction.loads.*;
import haidnor.jvm.instruction.math.IINC;
import haidnor.jvm.instruction.stores.*;
import haidnor.jvm.runtime.Frame;
import haidnor.jvm.util.CodeStream;
public class WIDE extends Instruction {
private final Instruction instruction;
public WIDE(CodeStream codeStream) {
super(codeStream);
int wideOpcode = codeStream.readShort(this);
switch (wideOpcode) {
case 0x84 -> instruction = new IINC(codeStream);
case 0x15 -> instruction = new ILOAD(codeStream);
case 0x17 -> instruction = new FLOAD(codeStream);
case 0x19 -> instruction = new ALOAD(codeStream);
case 0x16 -> instruction = new LLOAD(codeStream);
case 0x18 -> instruction = new DLOAD(codeStream);
case 0x36 -> instruction = new ISTORE(codeStream);
case 0x38 -> instruction = new FSTORE(codeStream);
case 0x3a -> instruction = new ASTORE(codeStream);
case 0x37 -> instruction = new LSTORE(codeStream);
case 0x39 -> instruction = new DSTORE(codeStream);
case 0xa9 -> throw new UnsupportedOperationException(); // ret, ignore
default -> throw new UnsupportedOperationException();
}
}
@Override
public void execute(Frame frame) {
instruction.execute(frame);
}
}