Examples with Instruction net.runelite.asm.attributes.code.Instruction used on opensource projects

Example 96 with Instruction

use of net.runelite.asm.attributes.code.Instruction in project runelite by runelite.

the class HandlerFinder method insertReturn.

private void insertReturn(Instructions ins, Instruction start, Instruction end) {
    assert end instanceof Label;
    int idx = ins.getInstructions().indexOf(end);
    assert idx != -1;
    Instruction before = ins.getInstructions().get(idx - 1);
    if (// XXX check isTerminal?
    before.getType() == InstructionType.RETURN) {
        return;
    }
    // insert return before end
    logger.info("Inserting return before {}", end);
    Instruction ret = new VReturn(ins);
    ins.addInstruction(idx, ret);
    Label label = ins.createLabelFor(ret);
    // Change jumps which go to the next handler to instead go to return
    for (Instruction i : ins.getInstructions()) {
        if (i instanceof JumpingInstruction) {
            JumpingInstruction j = (JumpingInstruction) i;
            if (i == start) {
                continue;
            }
            if (j.getJumps().size() == 1 && j.getJumps().get(0) == end) {
                j.setJumps(Collections.singletonList(label));
            }
        }
    }
}

Example 97 with Instruction

use of net.runelite.asm.attributes.code.Instruction in project runelite by runelite.

the class PacketLengthFinder method run.

// getstatic             class272/field3690 [I
// getstatic             Client/packetType I
// iaload
// putstatic             Client/packetLength I
private void run(Code code) {
    if (code == null) {
        return;
    }
    Instructions instructions = code.getInstructions();
    Field type = packetType.getPacketType();
    for (int i = 0; i < instructions.getInstructions().size() - 3; ++i) {
        Instruction i1 = instructions.getInstructions().get(i), i2 = instructions.getInstructions().get(i + 1), i3 = instructions.getInstructions().get(i + 2), i4 = instructions.getInstructions().get(i + 3);
        if (!(i1 instanceof GetStatic)) {
            continue;
        }
        if (!(i2 instanceof GetStatic)) {
            continue;
        }
        GetStatic gs = (GetStatic) i2;
        if (gs.getMyField() != type) {
            continue;
        }
        if (!(i3 instanceof IALoad)) {
            continue;
        }
        if (!(i4 instanceof PutStatic)) {
            continue;
        }
        PutStatic ps = (PutStatic) i4;
        assert packetLength == null : "packetLength already found";
        packetLength = ps.getMyField();
        getArray = (GetStatic) i1;
        getType = gs;
        load = (IALoad) i3;
        store = ps;
        return;
    }
}

Example 98 with Instruction

use of net.runelite.asm.attributes.code.Instruction in project runelite by runelite.

the class PacketTypeFinder method run.

private void run(Code code) {
    if (code == null) {
        return;
    }
    Instructions instructions = code.getInstructions();
    for (int i = 0; i < instructions.getInstructions().size() - 1; ++i) {
        Instruction i1 = instructions.getInstructions().get(i), i2 = instructions.getInstructions().get(i + 1);
        if (i1 instanceof PushConstantInstruction && i2.getType() == InstructionType.PUTSTATIC) {
            PushConstantInstruction pci = (PushConstantInstruction) i1;
            SetFieldInstruction sfi = (SetFieldInstruction) i2;
            Field field = sfi.getMyField();
            if (Objects.equal(-1, pci.getConstant()) && field != null) {
                Integer count = sets.get(field);
                if (count == null) {
                    sets.put(field, 1);
                } else {
                    sets.put(field, count + 1);
                }
            }
        }
    }
}

Example 99 with Instruction

use of net.runelite.asm.attributes.code.Instruction in project runelite by runelite.

the class OpcodeReplacer method run.

public void run(ClassGroup group, Collection<PacketWrite> writes) {
    int count = 0;
    ClassFile runeliteOpcodes = group.findClass(RUNELITE_OPCODES);
    assert runeliteOpcodes != null : "Opcodes class must exist";
    for (PacketWrite wp : writes) {
        Instructions ins = wp.getInstructions();
        Instruction param = wp.getOpcodeIns();
        if (!(param instanceof PushConstantInstruction)) {
            continue;
        }
        final String fieldName = "PACKET_CLIENT_" + wp.getOpcode();
        net.runelite.asm.pool.Field field = new net.runelite.asm.pool.Field(new net.runelite.asm.pool.Class(RUNELITE_OPCODES), fieldName, Type.INT);
        ins.replace(param, new GetStatic(ins, field));
        if (runeliteOpcodes.findField(fieldName) == null) {
            Field opField = new Field(runeliteOpcodes, fieldName, Type.INT);
            // ACC_FINAL causes javac to inline the fields, which prevents
            // the mapper from doing field mapping
            opField.setAccessFlags(ACC_PUBLIC | ACC_STATIC);
            // setting a non-final static field value
            // doesn't work with fernflower
            opField.setValue(wp.getOpcode());
            runeliteOpcodes.addField(opField);
            // add initialization
            Method clinit = runeliteOpcodes.findMethod("<clinit>");
            assert clinit != null;
            Instructions instructions = clinit.getCode().getInstructions();
            instructions.addInstruction(0, new LDC(instructions, wp.getOpcode()));
            instructions.addInstruction(1, new PutStatic(instructions, opField));
        }
        ++count;
    }
    logger.info("Injected {} packet writes", count);
}

Example 100 with Instruction

use of net.runelite.asm.attributes.code.Instruction in project runelite by runelite.

the class UnusedParameters method visit.

private void visit(InstructionContext ictx) {
    Instruction i = ictx.getInstruction();
    if (!(i instanceof InvokeInstruction)) {
        return;
    }
    invokes.put(i, ictx);
}