Example usage for org.objectweb.asm.tree InsnList InsnList

List of usage examples for org.objectweb.asm.tree InsnList InsnList

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Introduction

In this page you can find the example usage for org.objectweb.asm.tree InsnList InsnList.

Prototype

InsnList

Source Link

Usage

From source file:net.sandius.rembulan.compiler.gen.asm.RunMethod.java

License:Apache License

private InsnList dispatchTable(List<LabelNode> extLabels, List<LabelNode> resumptionLabels,
        LabelNode errorStateLabel) {/*from www  .  ja  v a  2 s. c om*/
    InsnList il = new InsnList();

    assert (!extLabels.isEmpty());

    ArrayList<LabelNode> labels = new ArrayList<>();
    labels.addAll(extLabels);
    labels.addAll(resumptionLabels);
    LabelNode[] labelArray = labels.toArray(new LabelNode[labels.size()]);

    int min = 1 - extLabels.size();
    int max = resumptionLabels.size();

    il.add(new VarInsnNode(ILOAD, LV_RESUME));
    il.add(new TableSwitchInsnNode(min, max, errorStateLabel, labelArray));
    return il;
}

From source file:net.sandius.rembulan.compiler.gen.asm.RunMethod.java

License:Apache License

InsnList createSnapshot() {
    InsnList il = new InsnList();

    il.add(new VarInsnNode(ALOAD, 0)); // this
    il.add(new VarInsnNode(ALOAD, 0));
    il.add(new VarInsnNode(ILOAD, LV_RESUME));
    if (context.isVararg()) {
        il.add(new VarInsnNode(ALOAD, LV_VARARGS));
    }// w w  w . ja v a 2s.c  om
    for (int i = 0; i < numOfRegisters(); i++) {
        il.add(new VarInsnNode(ALOAD, slotOffset() + i));
    }
    il.add(snapshotMethodInvokeInsn());

    return il;
}

From source file:net.sandius.rembulan.compiler.gen.asm.RunMethod.java

License:Apache License

protected InsnList resumptionHandler(LabelNode label) {
    InsnList il = new InsnList();

    il.add(label);/*ww  w  . j  av a 2s  .  c  om*/
    il.add(ASMUtils.frameSame1(UnresolvedControlThrowable.class));

    il.add(createSnapshot());

    // register snapshot with the control exception
    il.add(new MethodInsnNode(INVOKEVIRTUAL, Type.getInternalName(UnresolvedControlThrowable.class), "resolve",
            Type.getMethodType(Type.getType(ResolvedControlThrowable.class), Type.getType(Resumable.class),
                    Type.getType(Object.class)).getDescriptor(),
            false));

    // rethrow
    il.add(new InsnNode(ATHROW));

    return il;
}

From source file:net.sandius.rembulan.compiler.gen.asm.RunMethod.java

License:Apache License

private MethodNode emitRunMethod(String methodName, Type returnType, BytecodeEmitVisitor visitor,
        List<BasicBlock> blocks, boolean sub) {
    MethodNode node = new MethodNode(ACC_PRIVATE, methodName, methodType(returnType).getDescriptor(), null,
            throwsExceptions());/* w  ww .  j  ava  2s . c om*/

    InsnList insns = node.instructions;

    LabelNode l_begin = new LabelNode();
    LabelNode l_end = new LabelNode();

    visitor.visitBlocks(blocks);

    InsnList prefix = new InsnList();
    InsnList suffix = new InsnList();

    final LabelNode l_head;
    final List<LabelNode> els = new ArrayList<>();
    if (sub) {
        assert (!blocks.isEmpty());
        for (int i = blocks.size() - 1; i >= 0; i--) {
            BasicBlock blk = blocks.get(i);
            LabelNode l = visitor.labels.get(blk.label());
            assert (l != null);
            els.add(l);
        }
        l_head = visitor.labels.get(blocks.get(0).label());
    } else {
        l_head = new LabelNode();
        els.add(l_head);
    }

    assert (l_head != null);

    if (visitor.isResumable()) {
        LabelNode l_error_state = new LabelNode();
        LabelNode l_handler_begin = new LabelNode();

        List<LabelNode> rls = visitor.resumptionLabels();

        assert (!rls.isEmpty() || !els.isEmpty());

        prefix.add(dispatchTable(els, rls, l_error_state));

        final LabelNode l_entry = l_head;

        if (!sub) {
            prefix.add(l_entry);
            prefix.add(ASMUtils.frameSame());
        }

        suffix.add(errorState(l_error_state));
        suffix.add(resumptionHandler(l_handler_begin));

        node.tryCatchBlocks.add(new TryCatchBlockNode(l_entry, l_error_state, l_handler_begin,
                Type.getInternalName(UnresolvedControlThrowable.class)));
    }

    insns.add(l_begin);
    insns.add(prefix);
    insns.add(visitor.instructions());
    insns.add(suffix);
    insns.add(l_end);

    addLocals(node, l_begin, l_end, visitor);

    return node;
}

From source file:nova.core.wrapper.mc.forge.v17.asm.lib.ASMHelper.java

License:Open Source License

public static InsnList cloneInsnList(Map<LabelNode, LabelNode> labelMap, InsnList insns) {
    InsnList clone = new InsnList();
    for (AbstractInsnNode insn = insns.getFirst(); insn != null; insn = insn.getNext()) {
        clone.add(insn.clone(labelMap));
    }//from  ww  w  .  jav  a  2 s .  c o m

    return clone;
}

From source file:nova.core.wrapper.mc.forge.v17.asm.lib.InstructionComparator.java

License:Open Source License

public static InsnList getImportantList(InsnList list) {
    if (list.size() == 0) {
        return list;
    }/*w w  w  .  j av a 2 s.  c o  m*/

    HashMap<LabelNode, LabelNode> labels = new HashMap<LabelNode, LabelNode>();
    for (AbstractInsnNode insn = list.getFirst(); insn != null; insn = insn.getNext()) {
        if (insn instanceof LabelNode) {
            labels.put((LabelNode) insn, (LabelNode) insn);
        }
    }

    InsnList importantNodeList = new InsnList();
    for (AbstractInsnNode insn = list.getFirst(); insn != null; insn = insn.getNext()) {
        if (insn instanceof LabelNode || insn instanceof LineNumberNode) {
            continue;
        }

        importantNodeList.add(insn.clone(labels));
    }
    return importantNodeList;
}

From source file:nova.core.wrapper.mc.forge.v17.asm.transformers.ChunkTransformer.java

License:Open Source License

@Override
public void transform(ClassNode cnode) {
    System.out.println("[NOVA] Transforming Chunk class for chunkModified event.");

    ObfMapping obfMap = new ObfMapping("apx", "a", "(IIILaji;I)Z");
    ObfMapping srgMap = new ObfMapping("net/minecraft/world/chunk/Chunk", "func_150807_a",
            "(IIILnet/minecraft/block/Block;I)Z");

    MethodNode method = ASMHelper.findMethod(obfMap, cnode);

    if (method == null) {
        System.out.println("[NOVA] Lookup " + obfMap + " failed. You are probably in a deobf environment.");
        method = ASMHelper.findMethod(srgMap, cnode);

        if (method == null) {
            System.out.println("[NOVA] Lookup " + srgMap + " failed!");
        }//  ww  w. ja  va 2  s.c o m
    }

    System.out.println("[NOVA] Found method " + method.name);

    InsnList list = new InsnList();
    list.add(new VarInsnNode(ALOAD, 0));
    list.add(new VarInsnNode(ILOAD, 1));
    list.add(new VarInsnNode(ILOAD, 2));
    list.add(new VarInsnNode(ILOAD, 3));
    list.add(new VarInsnNode(ALOAD, 8));
    list.add(new VarInsnNode(ILOAD, 9));
    list.add(new VarInsnNode(ALOAD, 4));
    list.add(new VarInsnNode(ILOAD, 5));
    list.add(new MethodInsnNode(INVOKESTATIC, "nova/core/wrapper/mc/forge/v17/asm/StaticForwarder",
            "chunkSetBlockEvent",
            "(Lnet/minecraft/world/chunk/Chunk;IIILnet/minecraft/block/Block;ILnet/minecraft/block/Block;I)V",
            false));

    AbstractInsnNode lastInsn = method.instructions.getLast();
    while (lastInsn instanceof LabelNode || lastInsn instanceof LineNumberNode) {
        lastInsn = lastInsn.getPrevious();
    }

    if (ASMHelper.isReturn(lastInsn)) {
        method.instructions.insertBefore(lastInsn, list);
    } else {
        method.instructions.insert(list);
    }

    System.out.println("[NOVA] Injected instruction to method: " + method.name);
}

From source file:nova.core.wrapper.mc.forge.v17.asm.transformers.TileEntityTransformer.java

License:Open Source License

@Override
public void transform(ClassNode cnode) {

    System.out.println("[NOVA] Transforming TileEntity class for dynamic instance injection.");

    ObfMapping obfMap = new ObfMapping("aor", "c", "(Ldh;)Laor;");
    ObfMapping deobfMap = new ObfMapping("net/minecraft/tileentity/TileEntity", "createAndLoadEntity",
            "(Lnet/minecraft/nbt/NBTTagCompound;)Lnet/minecraft/tileentity/TileEntity;");

    MethodNode method = ASMHelper.findMethod(obfMap, cnode);

    if (method == null) {
        System.out.println("[NOVA] Lookup " + obfMap + " failed. You are probably in a deobf environment.");
        method = ASMHelper.findMethod(deobfMap, cnode);

        if (method == null) {
            System.out.println("[NOVA] Lookup " + deobfMap + " failed!");
        }// w  w  w  .jav a  2 s .  c  om
    }

    System.out.println("[NOVA] Transforming method " + method.name);

    ASMHelper.removeBlock(method.instructions,
            new InstructionComparator.InsnListSection(method.instructions, 23, 26));

    InsnList list = new InsnList();
    list.add(new VarInsnNode(ALOAD, 0));
    list.add(new VarInsnNode(ALOAD, 2));
    list.add(new MethodInsnNode(INVOKESTATIC, "nova/core/wrapper/mc/forge/v17/asm/StaticForwarder",
            "loadTileEntityHook",
            "(Lnet/minecraft/nbt/NBTTagCompound;Ljava/lang/Class;)Lnet/minecraft/tileentity/TileEntity;",
            false));
    list.add(new VarInsnNode(ASTORE, 1));

    method.instructions.insert(method.instructions.get(22), list);
}

From source file:nova.core.wrapper.mc.forge.v18.asm.transformers.ChunkTransformer.java

License:Open Source License

@Override
public void transform(ClassNode cnode) {
    System.out.println("[NOVA] Transforming Chunk class for chunkModified event.");

    //obf name: func_177436_a
    MethodNode method = ASMHelper.findMethod(new ObfMapping("net/minecraft/world/chunk/Chunk", "setBlockState",
            "(Lnet/minecraft/util/BlockPos;Lnet/minecraft/block/state/IBlockState;)Lnet/minecraft/block/state/IBlockState;"),
            cnode);/*w w  w .  ja va 2 s  .c  om*/

    System.out.println("[NOVA] Found method " + method.name);

    InsnList list = new InsnList();
    list.add(new VarInsnNode(ALOAD, 0)); //this
    list.add(new VarInsnNode(ALOAD, 1)); //BlockPos
    list.add(new VarInsnNode(ALOAD, 8)); //oldBlock IBlockState
    list.add(new VarInsnNode(ALOAD, 2)); //newBlock IBlockState
    list.add(new MethodInsnNode(INVOKESTATIC, "nova/core/wrapper/mc/forge/v18/asm/StaticForwarder",
            "chunkSetBlockEvent",
            "(Lnet/minecraft/world/chunk/Chunk;Lnet/minecraft/util/BlockPos;Lnet/minecraft/block/state/IBlockState;Lnet/minecraft/block/state/IBlockState;)V",
            false));

    AbstractInsnNode lastInsn = method.instructions.getLast();
    while (lastInsn instanceof LabelNode || lastInsn instanceof LineNumberNode) {
        lastInsn = lastInsn.getPrevious();
    }

    if (ASMHelper.isReturn(lastInsn)) {
        method.instructions.insertBefore(lastInsn, list);
    } else {
        method.instructions.insert(list);
    }

    System.out.println("[NOVA] Injected instruction to method: " + method.name);
}

From source file:nova.core.wrapper.mc.forge.v18.asm.transformers.TileEntityTransformer.java

License:Open Source License

@Override
public void transform(ClassNode cnode) {

    System.out.println("[NOVA] Transforming TileEntity class for dynamic instance injection.");

    ObfMapping obfMap = new ObfMapping("bcm", "c", "(Lfn;)Lbcm;");
    ObfMapping deobfMap = new ObfMapping("net/minecraft/tileentity/TileEntity", "createAndLoadEntity",
            "(Lnet/minecraft/nbt/NBTTagCompound;)Lnet/minecraft/tileentity/TileEntity;");

    MethodNode method = ASMHelper.findMethod(obfMap, cnode);

    if (method == null) {
        System.out.println("[NOVA] Lookup " + obfMap + " failed. You are probably in a deobf environment.");
        method = ASMHelper.findMethod(deobfMap, cnode);

        if (method == null) {
            System.out.println("[NOVA] Lookup " + deobfMap + " failed!");
        }//from w ww . j  a  va 2 s. com
    }

    System.out.println("[NOVA] Transforming method " + method.name);

    ASMHelper.removeBlock(method.instructions,
            new InstructionComparator.InsnListSection(method.instructions, 23, 26));

    InsnList list = new InsnList();
    list.add(new VarInsnNode(ALOAD, 0));
    list.add(new VarInsnNode(ALOAD, 2));
    list.add(new MethodInsnNode(INVOKESTATIC, "nova/core/wrapper/mc/forge/v18/asm/StaticForwarder",
            "loadTileEntityHook",
            "(Lnet/minecraft/nbt/NBTTagCompound;Ljava/lang/Class;)Lnet/minecraft/tileentity/TileEntity;",
            false));
    list.add(new VarInsnNode(ASTORE, 1));

    method.instructions.insert(method.instructions.get(22), list);
}