Examples with InsnNode jadx.core.dex.nodes.InsnNode used on opensource projects

Example 91 with InsnNode

use of jadx.core.dex.nodes.InsnNode in project jadx by skylot.

the class RegisterArg method getPhiAssignInsn.

public InsnNode getPhiAssignInsn() {
    PhiInsn usePhi = sVar.getUsedInPhi();
    if (usePhi != null) {
        return usePhi;
    }
    InsnNode parent = sVar.getAssign().getParentInsn();
    if (parent != null && parent.getType() == InsnType.PHI) {
        return parent;
    }
    return null;
}

Example 92 with InsnNode

use of jadx.core.dex.nodes.InsnNode in project jadx by skylot.

the class CodeShrinker method inline.

private static boolean inline(RegisterArg arg, InsnNode insn, BlockNode block) {
    InsnNode parentInsn = arg.getParentInsn();
    if (parentInsn != null && parentInsn.getType() == InsnType.RETURN) {
        parentInsn.setSourceLine(insn.getSourceLine());
    }
    boolean replaced = arg.wrapInstruction(insn) != null;
    if (replaced) {
        InsnList.remove(block, insn);
    }
    return replaced;
}

Example 93 with InsnNode

use of jadx.core.dex.nodes.InsnNode in project jadx by skylot.

the class CodeShrinker method shrinkBlock.

private static void shrinkBlock(MethodNode mth, BlockNode block) {
    if (block.getInstructions().isEmpty()) {
        return;
    }
    InsnList insnList = new InsnList(block.getInstructions());
    int insnCount = insnList.size();
    List<ArgsInfo> argsList = new ArrayList<ArgsInfo>(insnCount);
    for (int i = 0; i < insnCount; i++) {
        argsList.add(new ArgsInfo(insnList.get(i), argsList, i));
    }
    List<WrapInfo> wrapList = new ArrayList<WrapInfo>();
    for (ArgsInfo argsInfo : argsList) {
        List<RegisterArg> args = argsInfo.getArgs();
        if (args.isEmpty()) {
            continue;
        }
        ListIterator<RegisterArg> it = args.listIterator(args.size());
        while (it.hasPrevious()) {
            RegisterArg arg = it.previous();
            //				if (arg.getName() != null) {
            //					continue;
            //				}
            SSAVar sVar = arg.getSVar();
            // allow inline only one use arg or 'this'
            if (sVar == null || sVar.getVariableUseCount() != 1 && !arg.isThis() || sVar.contains(AFlag.DONT_INLINE)) {
                continue;
            }
            InsnNode assignInsn = sVar.getAssign().getParentInsn();
            if (assignInsn == null || assignInsn.contains(AFlag.DONT_INLINE)) {
                continue;
            }
            int assignPos = insnList.getIndex(assignInsn);
            if (assignPos != -1) {
                WrapInfo wrapInfo = argsInfo.checkInline(assignPos, arg);
                if (wrapInfo != null) {
                    wrapList.add(wrapInfo);
                }
            } else {
                // another block
                BlockNode assignBlock = BlockUtils.getBlockByInsn(mth, assignInsn);
                if (assignBlock != null && assignInsn != arg.getParentInsn() && canMoveBetweenBlocks(assignInsn, assignBlock, block, argsInfo.getInsn())) {
                    inline(arg, assignInsn, assignBlock);
                }
            }
        }
    }
    if (!wrapList.isEmpty()) {
        for (WrapInfo wrapInfo : wrapList) {
            inline(wrapInfo.getArg(), wrapInfo.getInsn(), block);
        }
    }
}

Example 94 with InsnNode

use of jadx.core.dex.nodes.InsnNode in project jadx by skylot.

the class ConstInlineVisitor method replaceConst.

private static boolean replaceConst(MethodNode mth, InsnNode constInsn, long literal) {
    SSAVar sVar = constInsn.getResult().getSVar();
    List<RegisterArg> use = new ArrayList<RegisterArg>(sVar.getUseList());
    int replaceCount = 0;
    for (RegisterArg arg : use) {
        InsnNode useInsn = arg.getParentInsn();
        if (useInsn == null || useInsn.getType() == InsnType.PHI || useInsn.getType() == InsnType.MERGE) {
            continue;
        }
        LiteralArg litArg;
        ArgType argType = arg.getType();
        if (argType.isObject() && literal != 0) {
            argType = ArgType.NARROW_NUMBERS;
        }
        if (use.size() == 1 || arg.isTypeImmutable()) {
            // arg used only in one place
            litArg = InsnArg.lit(literal, argType);
        } else if (useInsn.getType() == InsnType.MOVE && !useInsn.getResult().getType().isTypeKnown()) {
            // save type for 'move' instructions (hard to find type in chains of 'move')
            litArg = InsnArg.lit(literal, argType);
        } else {
            // in most cases type not equal arg.getType()
            // just set unknown type and run type fixer
            litArg = InsnArg.lit(literal, ArgType.UNKNOWN);
        }
        if (useInsn.replaceArg(arg, litArg)) {
            fixTypes(mth, useInsn, litArg);
            replaceCount++;
            if (useInsn.getType() == InsnType.RETURN) {
                useInsn.setSourceLine(constInsn.getSourceLine());
            }
            FieldNode f = null;
            ArgType litArgType = litArg.getType();
            if (litArgType.isTypeKnown()) {
                f = mth.getParentClass().getConstFieldByLiteralArg(litArg);
            } else if (litArgType.contains(PrimitiveType.INT)) {
                f = mth.getParentClass().getConstField((int) literal, false);
            }
            if (f != null) {
                litArg.wrapInstruction(new IndexInsnNode(InsnType.SGET, f.getFieldInfo(), 0));
            }
        }
    }
    return replaceCount == use.size();
}

Example 95 with InsnNode

use of jadx.core.dex.nodes.InsnNode in project jadx by skylot.

the class ConstInlineVisitor method visit.

@Override
public void visit(MethodNode mth) throws JadxException {
    if (mth.isNoCode()) {
        return;
    }
    List<InsnNode> toRemove = new ArrayList<InsnNode>();
    for (BlockNode block : mth.getBasicBlocks()) {
        toRemove.clear();
        for (InsnNode insn : block.getInstructions()) {
            if (checkInsn(mth, insn)) {
                toRemove.add(insn);
            }
        }
        InstructionRemover.removeAll(mth, block, toRemove);
    }
}