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

Example 46 with InsnNode

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

the class ModVisitor method removeStep.

/**
	 * Remove unnecessary instructions
	 */
private static void removeStep(MethodNode mth, InstructionRemover remover) {
    for (BlockNode block : mth.getBasicBlocks()) {
        remover.setBlock(block);
        for (InsnNode insn : block.getInstructions()) {
            switch(insn.getType()) {
                case NOP:
                case GOTO:
                case NEW_INSTANCE:
                    remover.add(insn);
                    break;
                default:
                    break;
            }
        }
        remover.perform();
    }
}

Example 47 with InsnNode

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

the class ModVisitor method getParentInsnSkipMove.

private static InsnNode getParentInsnSkipMove(RegisterArg arg) {
    SSAVar sVar = arg.getSVar();
    if (sVar.getUseCount() != 1) {
        return null;
    }
    RegisterArg useArg = sVar.getUseList().get(0);
    InsnNode parentInsn = useArg.getParentInsn();
    if (parentInsn == null) {
        return null;
    }
    if (parentInsn.getType() == InsnType.MOVE) {
        return getParentInsnSkipMove(parentInsn.getResult());
    }
    return parentInsn;
}

Example 48 with InsnNode

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

the class PrepareForCodeGen method checkInsn.

/**
	 * Remove parenthesis for wrapped insn  in arith '+' or '-'
	 * ('(a + b) +c' => 'a + b + c')
	 */
private static void checkInsn(InsnNode insn) {
    if (insn.getType() == InsnType.ARITH) {
        ArithNode arith = (ArithNode) insn;
        ArithOp op = arith.getOp();
        if (op == ArithOp.ADD || op == ArithOp.SUB) {
            for (int i = 0; i < 2; i++) {
                InsnArg arg = arith.getArg(i);
                if (arg.isInsnWrap()) {
                    InsnNode wrapInsn = ((InsnWrapArg) arg).getWrapInsn();
                    wrapInsn.add(AFlag.DONT_WRAP);
                    checkInsn(wrapInsn);
                }
            }
        }
    } else {
        for (InsnArg arg : insn.getArguments()) {
            if (arg.isInsnWrap()) {
                InsnNode wrapInsn = ((InsnWrapArg) arg).getWrapInsn();
                checkInsn(wrapInsn);
            }
        }
    }
}

Example 49 with InsnNode

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

the class PrepareForCodeGen method modifyArith.

/**
	 * Replace arithmetic operation with short form
	 * ('a = a + 2' => 'a += 2')
	 */
private static void modifyArith(BlockNode block) {
    List<InsnNode> list = block.getInstructions();
    for (InsnNode insn : list) {
        if (insn.getType() == InsnType.ARITH) {
            RegisterArg res = insn.getResult();
            InsnArg arg = insn.getArg(0);
            boolean replace = false;
            if (res.equals(arg)) {
                replace = true;
            } else if (arg.isRegister()) {
                RegisterArg regArg = (RegisterArg) arg;
                replace = res.equalRegisterAndType(regArg);
            }
            if (replace) {
                insn.add(AFlag.ARITH_ONEARG);
            }
        }
    }
}

Example 50 with InsnNode

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

the class PrepareForCodeGen method checkInline.

private static void checkInline(BlockNode block) {
    List<InsnNode> list = block.getInstructions();
    for (int i = 0; i < list.size(); i++) {
        InsnNode insn = list.get(i);
        // replace 'move' with inner wrapped instruction
        if (insn.getType() == InsnType.MOVE && insn.getArg(0).isInsnWrap()) {
            InsnNode wrapInsn = ((InsnWrapArg) insn.getArg(0)).getWrapInsn();
            wrapInsn.setResult(insn.getResult());
            wrapInsn.copyAttributesFrom(insn);
            list.set(i, wrapInsn);
        }
    }
}