Examples with InsnArg jadx.core.dex.instructions.args.InsnArg used on opensource projects

Example 41 with InsnArg

use of jadx.core.dex.instructions.args.InsnArg in project jadx by skylot.

the class MethodInlineVisitor method inlineMth.

private static void inlineMth(MethodNode mth, BlockNode firstBlock, BlockNode returnBlock) {
    List<InsnNode> insnList = firstBlock.getInstructions();
    if (insnList.isEmpty()) {
        // synthetic field getter
        BlockNode block = mth.getBasicBlocks().get(1);
        InsnNode insn = block.getInstructions().get(0);
        // set arg from 'return' instruction
        addInlineAttr(mth, InsnNode.wrapArg(insn.getArg(0)));
        return;
    }
    // synthetic field setter or method invoke
    if (insnList.size() == 1) {
        addInlineAttr(mth, insnList.get(0));
        return;
    }
    // other field operations
    if (insnList.size() == 2 && returnBlock.getInstructions().size() == 1 && !mth.getReturnType().equals(ArgType.VOID)) {
        InsnNode get = insnList.get(0);
        InsnNode put = insnList.get(1);
        InsnArg retArg = returnBlock.getInstructions().get(0).getArg(0);
        if (get.getType() == InsnType.IGET && put.getType() == InsnType.IPUT && retArg.isRegister() && get.getResult().equalRegisterAndType((RegisterArg) retArg)) {
            RegisterArg retReg = (RegisterArg) retArg;
            retReg.getSVar().removeUse(retReg);
            CodeShrinker.shrinkMethod(mth);
            insnList = firstBlock.getInstructions();
            if (insnList.size() == 1) {
                addInlineAttr(mth, insnList.get(0));
            }
        }
    }
}

Example 42 with InsnArg

use of jadx.core.dex.instructions.args.InsnArg in project jadx by skylot.

the class ClassModifier method removeFieldUsageFromConstructor.

private static boolean removeFieldUsageFromConstructor(MethodNode mth, FieldNode field, ClassNode fieldsCls) {
    if (mth.isNoCode() || !mth.getAccessFlags().isConstructor()) {
        return false;
    }
    List<RegisterArg> args = mth.getArguments(false);
    if (args.isEmpty() || mth.contains(AFlag.SKIP_FIRST_ARG)) {
        return false;
    }
    RegisterArg arg = args.get(0);
    if (!arg.getType().equals(fieldsCls.getClassInfo().getType())) {
        return false;
    }
    BlockNode block = mth.getBasicBlocks().get(0);
    List<InsnNode> instructions = block.getInstructions();
    if (instructions.isEmpty()) {
        return false;
    }
    InsnNode insn = instructions.get(0);
    if (insn.getType() != InsnType.IPUT) {
        return false;
    }
    IndexInsnNode putInsn = (IndexInsnNode) insn;
    FieldInfo fieldInfo = (FieldInfo) putInsn.getIndex();
    if (!fieldInfo.equals(field.getFieldInfo()) || !putInsn.getArg(0).equals(arg)) {
        return false;
    }
    mth.removeFirstArgument();
    InstructionRemover.remove(mth, block, insn);
    // other arg usage -> wrap with IGET insn
    if (arg.getSVar().getUseCount() != 0) {
        InsnNode iget = new IndexInsnNode(InsnType.IGET, fieldInfo, 1);
        iget.addArg(insn.getArg(1));
        for (InsnArg insnArg : arg.getSVar().getUseList()) {
            insnArg.wrapInstruction(iget);
        }
    }
    return true;
}

Example 43 with InsnArg

use of jadx.core.dex.instructions.args.InsnArg in project jadx by skylot.

the class InsnNode method copyCommonParams.

protected <T extends InsnNode> T copyCommonParams(T copy) {
    copy.setResult(result);
    if (copy.getArgsCount() == 0) {
        for (InsnArg arg : this.getArguments()) {
            if (arg.isInsnWrap()) {
                InsnNode wrapInsn = ((InsnWrapArg) arg).getWrapInsn();
                copy.addArg(InsnArg.wrapArg(wrapInsn.copy()));
            } else {
                copy.addArg(arg);
            }
        }
    }
    copy.copyAttributesFrom(this);
    copy.copyLines(this);
    copy.setOffset(this.getOffset());
    return copy;
}

Example 44 with InsnArg

use of jadx.core.dex.instructions.args.InsnArg in project jadx by skylot.

the class InsnDecoder method filledNewArray.

private InsnNode filledNewArray(DecodedInstruction insn, int offset, boolean isRange) {
    int resReg = getMoveResultRegister(insnArr, offset);
    ArgType arrType = dex.getType(insn.getIndex());
    ArgType elType = arrType.getArrayElement();
    boolean typeImmutable = elType.isPrimitive();
    int regsCount = insn.getRegisterCount();
    InsnArg[] regs = new InsnArg[regsCount];
    if (isRange) {
        int r = insn.getA();
        for (int i = 0; i < regsCount; i++) {
            regs[i] = InsnArg.reg(r, elType, typeImmutable);
            r++;
        }
    } else {
        for (int i = 0; i < regsCount; i++) {
            int regNum = InsnUtils.getArg(insn, i);
            regs[i] = InsnArg.reg(regNum, elType, typeImmutable);
        }
    }
    InsnNode node = new FilledNewArrayNode(elType, regs.length);
    node.setResult(resReg == -1 ? null : InsnArg.reg(resReg, arrType));
    for (InsnArg arg : regs) {
        node.addArg(arg);
    }
    return node;
}

Example 45 with InsnArg

use of jadx.core.dex.instructions.args.InsnArg in project jadx by skylot.

the class IfMakerHelper method getNextIfNode.

private static BlockNode getNextIfNode(BlockNode block) {
    if (block == null || block.contains(AType.LOOP) || block.contains(AFlag.SKIP)) {
        return null;
    }
    List<InsnNode> insns = block.getInstructions();
    if (insns.size() == 1 && insns.get(0).getType() == InsnType.IF) {
        return block;
    }
    // skip this block and search in successors chain
    List<BlockNode> successors = block.getSuccessors();
    if (successors.size() != 1) {
        return null;
    }
    BlockNode next = successors.get(0);
    if (next.getPredecessors().size() != 1) {
        return null;
    }
    boolean pass = true;
    if (!insns.isEmpty()) {
        // check that all instructions can be inlined
        for (InsnNode insn : insns) {
            RegisterArg res = insn.getResult();
            if (res == null) {
                pass = false;
                break;
            }
            List<RegisterArg> useList = res.getSVar().getUseList();
            if (useList.size() != 1) {
                pass = false;
                break;
            }
            InsnArg arg = useList.get(0);
            InsnNode usePlace = arg.getParentInsn();
            if (!BlockUtils.blockContains(block, usePlace) && !BlockUtils.blockContains(next, usePlace)) {
                pass = false;
                break;
            }
        }
    }
    if (pass) {
        return getNextIfNode(next);
    }
    return null;
}