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

Example 46 with BlockNode

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

the class BlockSplitter method setupConnectionsFromJumps.

private static void setupConnectionsFromJumps(MethodNode mth, Map<Integer, BlockNode> blocksMap) {
    for (BlockNode block : mth.getBasicBlocks()) {
        for (InsnNode insn : block.getInstructions()) {
            List<JumpInfo> jumps = insn.getAll(AType.JUMP);
            for (JumpInfo jump : jumps) {
                BlockNode srcBlock = getBlock(jump.getSrc(), blocksMap);
                BlockNode thisBlock = getBlock(jump.getDest(), blocksMap);
                connect(srcBlock, thisBlock);
            }
        }
    }
}

Example 47 with BlockNode

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

the class BlockSplitter method isDoWhile.

private static boolean isDoWhile(Map<Integer, BlockNode> blocksMap, BlockNode curBlock, InsnNode insn) {
    // split 'do-while' block (last instruction: 'if', target this block)
    if (insn.getType() != InsnType.IF) {
        return false;
    }
    IfNode ifs = (IfNode) insn;
    BlockNode targetBlock = blocksMap.get(ifs.getTarget());
    return targetBlock == curBlock;
}

Example 48 with BlockNode

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

the class BlockSplitter method startNewBlock.

static BlockNode startNewBlock(MethodNode mth, int offset) {
    BlockNode block = new BlockNode(mth.getBasicBlocks().size(), offset);
    mth.getBasicBlocks().add(block);
    return block;
}

Example 49 with BlockNode

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

the class BlockSplitter method removeEmptyBlock.

static boolean removeEmptyBlock(BlockNode block) {
    if (canRemoveBlock(block)) {
        if (block.getSuccessors().size() == 1) {
            BlockNode successor = block.getSuccessors().get(0);
            block.getPredecessors().forEach(pred -> {
                pred.getSuccessors().remove(block);
                BlockSplitter.connect(pred, successor);
                BlockSplitter.replaceTarget(pred, block, successor);
                pred.updateCleanSuccessors();
            });
            BlockSplitter.removeConnection(block, successor);
        } else {
            block.getPredecessors().forEach(pred -> {
                pred.getSuccessors().remove(block);
                pred.updateCleanSuccessors();
            });
        }
        block.add(AFlag.REMOVE);
        block.getSuccessors().clear();
        block.getPredecessors().clear();
        return true;
    }
    return false;
}

Example 50 with BlockNode

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

the class BlockSplitter method expandMoveMulti.

private static void expandMoveMulti(MethodNode mth) {
    for (BlockNode block : mth.getBasicBlocks()) {
        List<InsnNode> insnsList = block.getInstructions();
        int len = insnsList.size();
        for (int i = 0; i < len; i++) {
            InsnNode insn = insnsList.get(i);
            if (insn.getType() == InsnType.MOVE_MULTI) {
                int mvCount = insn.getArgsCount() / 2;
                for (int j = 0; j < mvCount; j++) {
                    InsnNode mv = new InsnNode(InsnType.MOVE, 1);
                    int startArg = j * 2;
                    mv.setResult((RegisterArg) insn.getArg(startArg));
                    mv.addArg(insn.getArg(startArg + 1));
                    mv.copyAttributesFrom(insn);
                    if (j == 0) {
                        mv.setOffset(insn.getOffset());
                        insnsList.set(i, mv);
                    } else {
                        insnsList.add(i + j, mv);
                    }
                }
                i += mvCount - 1;
                len = insnsList.size();
            }
        }
    }
}