Examples with SwitchInsn jadx.core.dex.instructions.SwitchInsn used on opensource projects

Example 1 with SwitchInsn

use of jadx.core.dex.instructions.SwitchInsn in project jadx by skylot.

the class RegionGen method makeSwitch.

public void makeSwitch(SwitchRegion sw, ICodeWriter code) throws CodegenException {
    SwitchInsn insn = (SwitchInsn) BlockUtils.getLastInsn(sw.getHeader());
    Objects.requireNonNull(insn, "Switch insn not found in header");
    InsnArg arg = insn.getArg(0);
    code.startLine("switch (");
    addArg(code, arg, false);
    code.add(") {");
    InsnCodeOffset.attach(code, insn);
    CodeGenUtils.addCodeComments(code, mth, insn);
    code.incIndent();
    for (CaseInfo caseInfo : sw.getCases()) {
        List<Object> keys = caseInfo.getKeys();
        IContainer c = caseInfo.getContainer();
        for (Object k : keys) {
            if (k == SwitchRegion.DEFAULT_CASE_KEY) {
                code.startLine("default:");
            } else {
                code.startLine("case ");
                addCaseKey(code, arg, k);
                code.add(':');
            }
        }
        makeRegionIndent(code, c);
    }
    code.decIndent();
    code.startLine('}');
}

Example 2 with SwitchInsn

use of jadx.core.dex.instructions.SwitchInsn in project jadx by skylot.

the class InsnGen method makeInsnBody.

private void makeInsnBody(ICodeWriter code, InsnNode insn, Set<Flags> state) throws CodegenException {
    switch(insn.getType()) {
        case CONST_STR:
            String str = ((ConstStringNode) insn).getString();
            code.add(mth.root().getStringUtils().unescapeString(str));
            break;
        case CONST_CLASS:
            ArgType clsType = ((ConstClassNode) insn).getClsType();
            useType(code, clsType);
            code.add(".class");
            break;
        case CONST:
            LiteralArg arg = (LiteralArg) insn.getArg(0);
            code.add(lit(arg));
            break;
        case MOVE:
            addArg(code, insn.getArg(0), false);
            break;
        case CHECK_CAST:
        case CAST:
            {
                boolean wrap = state.contains(Flags.BODY_ONLY);
                if (wrap) {
                    code.add('(');
                }
                code.add('(');
                useType(code, (ArgType) ((IndexInsnNode) insn).getIndex());
                code.add(") ");
                addArg(code, insn.getArg(0), true);
                if (wrap) {
                    code.add(')');
                }
                break;
            }
        case ARITH:
            makeArith((ArithNode) insn, code, state);
            break;
        case NEG:
            oneArgInsn(code, insn, state, '-');
            break;
        case NOT:
            char op = insn.getArg(0).getType() == ArgType.BOOLEAN ? '!' : '~';
            oneArgInsn(code, insn, state, op);
            break;
        case RETURN:
            if (insn.getArgsCount() != 0) {
                code.add("return ");
                addArg(code, insn.getArg(0), false);
            } else {
                code.add("return");
            }
            break;
        case BREAK:
            code.add("break");
            LoopLabelAttr labelAttr = insn.get(AType.LOOP_LABEL);
            if (labelAttr != null) {
                code.add(' ').add(mgen.getNameGen().getLoopLabel(labelAttr));
            }
            break;
        case CONTINUE:
            code.add("continue");
            break;
        case THROW:
            code.add("throw ");
            addArg(code, insn.getArg(0), true);
            break;
        case CMP_L:
        case CMP_G:
            code.add('(');
            addArg(code, insn.getArg(0));
            code.add(" > ");
            addArg(code, insn.getArg(1));
            code.add(" ? 1 : (");
            addArg(code, insn.getArg(0));
            code.add(" == ");
            addArg(code, insn.getArg(1));
            code.add(" ? 0 : -1))");
            break;
        case INSTANCE_OF:
            {
                boolean wrap = state.contains(Flags.BODY_ONLY);
                if (wrap) {
                    code.add('(');
                }
                addArg(code, insn.getArg(0));
                code.add(" instanceof ");
                useType(code, (ArgType) ((IndexInsnNode) insn).getIndex());
                if (wrap) {
                    code.add(')');
                }
                break;
            }
        case CONSTRUCTOR:
            makeConstructor((ConstructorInsn) insn, code);
            break;
        case INVOKE:
            makeInvoke((InvokeNode) insn, code);
            break;
        case NEW_ARRAY:
            {
                ArgType arrayType = ((NewArrayNode) insn).getArrayType();
                code.add("new ");
                useType(code, arrayType.getArrayRootElement());
                int k = 0;
                int argsCount = insn.getArgsCount();
                for (; k < argsCount; k++) {
                    code.add('[');
                    addArg(code, insn.getArg(k), false);
                    code.add(']');
                }
                int dim = arrayType.getArrayDimension();
                for (; k < dim - 1; k++) {
                    code.add("[]");
                }
                break;
            }
        case ARRAY_LENGTH:
            addArg(code, insn.getArg(0));
            code.add(".length");
            break;
        case FILLED_NEW_ARRAY:
            filledNewArray((FilledNewArrayNode) insn, code);
            break;
        case FILL_ARRAY:
            FillArrayInsn arrayNode = (FillArrayInsn) insn;
            if (fallback) {
                String arrStr = arrayNode.dataToString();
                addArg(code, insn.getArg(0));
                code.add(" = {").add(arrStr.substring(1, arrStr.length() - 1)).add("} // fill-array");
            } else {
                fillArray(code, arrayNode);
            }
            break;
        case AGET:
            addArg(code, insn.getArg(0));
            code.add('[');
            addArg(code, insn.getArg(1), false);
            code.add(']');
            break;
        case APUT:
            addArg(code, insn.getArg(0));
            code.add('[');
            addArg(code, insn.getArg(1), false);
            code.add("] = ");
            addArg(code, insn.getArg(2), false);
            break;
        case IGET:
            {
                FieldInfo fieldInfo = (FieldInfo) ((IndexInsnNode) insn).getIndex();
                instanceField(code, fieldInfo, insn.getArg(0));
                break;
            }
        case IPUT:
            {
                FieldInfo fieldInfo = (FieldInfo) ((IndexInsnNode) insn).getIndex();
                instanceField(code, fieldInfo, insn.getArg(1));
                code.add(" = ");
                addArg(code, insn.getArg(0), false);
                break;
            }
        case SGET:
            staticField(code, (FieldInfo) ((IndexInsnNode) insn).getIndex());
            break;
        case SPUT:
            FieldInfo field = (FieldInfo) ((IndexInsnNode) insn).getIndex();
            staticField(code, field);
            code.add(" = ");
            addArg(code, insn.getArg(0), false);
            break;
        case STR_CONCAT:
            boolean wrap = state.contains(Flags.BODY_ONLY);
            if (wrap) {
                code.add('(');
            }
            for (Iterator<InsnArg> it = insn.getArguments().iterator(); it.hasNext(); ) {
                addArg(code, it.next());
                if (it.hasNext()) {
                    code.add(" + ");
                }
            }
            if (wrap) {
                code.add(')');
            }
            break;
        case MONITOR_ENTER:
            if (isFallback()) {
                code.add("monitor-enter(");
                addArg(code, insn.getArg(0));
                code.add(')');
            }
            break;
        case MONITOR_EXIT:
            if (isFallback()) {
                code.add("monitor-exit(");
                if (insn.getArgsCount() == 1) {
                    addArg(code, insn.getArg(0));
                }
                code.add(')');
            }
            break;
        case TERNARY:
            makeTernary((TernaryInsn) insn, code, state);
            break;
        case ONE_ARG:
            addArg(code, insn.getArg(0), state);
            break;
        /* fallback mode instructions */
        case IF:
            fallbackOnlyInsn(insn);
            IfNode ifInsn = (IfNode) insn;
            code.add("if (");
            addArg(code, insn.getArg(0));
            code.add(' ');
            code.add(ifInsn.getOp().getSymbol()).add(' ');
            addArg(code, insn.getArg(1));
            code.add(") goto ").add(MethodGen.getLabelName(ifInsn.getTarget()));
            break;
        case GOTO:
            fallbackOnlyInsn(insn);
            code.add("goto ").add(MethodGen.getLabelName(((GotoNode) insn).getTarget()));
            break;
        case MOVE_EXCEPTION:
            fallbackOnlyInsn(insn);
            code.add("move-exception");
            break;
        case SWITCH:
            fallbackOnlyInsn(insn);
            SwitchInsn sw = (SwitchInsn) insn;
            code.add("switch(");
            addArg(code, insn.getArg(0));
            code.add(") {");
            code.incIndent();
            int[] keys = sw.getKeys();
            int[] targets = sw.getTargets();
            for (int i = 0; i < keys.length; i++) {
                code.startLine("case ").add(Integer.toString(keys[i])).add(": goto ");
                code.add(MethodGen.getLabelName(targets[i])).add(';');
            }
            code.startLine("default: goto ");
            code.add(MethodGen.getLabelName(sw.getDefaultCaseOffset())).add(';');
            code.decIndent();
            code.startLine('}');
            break;
        case NEW_INSTANCE:
            // only fallback - make new instance in constructor invoke
            fallbackOnlyInsn(insn);
            code.add("new ").add(insn.getResult().getInitType().toString());
            break;
        case PHI:
            fallbackOnlyInsn(insn);
            code.add(insn.getType().toString()).add('(');
            for (InsnArg insnArg : insn.getArguments()) {
                addArg(code, insnArg);
                code.add(' ');
            }
            code.add(')');
            break;
        case MOVE_RESULT:
            fallbackOnlyInsn(insn);
            code.add("move-result");
            break;
        case FILL_ARRAY_DATA:
            fallbackOnlyInsn(insn);
            code.add("fill-array " + insn);
            break;
        case SWITCH_DATA:
            fallbackOnlyInsn(insn);
            code.add(insn.toString());
            break;
        case MOVE_MULTI:
            fallbackOnlyInsn(insn);
            int len = insn.getArgsCount();
            for (int i = 0; i < len - 1; i += 2) {
                addArg(code, insn.getArg(i));
                code.add(" = ");
                addArg(code, insn.getArg(i + 1));
                code.add("; ");
            }
            break;
        default:
            throw new CodegenException(mth, "Unknown instruction: " + insn.getType());
    }
}

Example 3 with SwitchInsn

use of jadx.core.dex.instructions.SwitchInsn in project jadx by skylot.

the class ProcessInstructionsVisitor method initJumps.

private static void initJumps(MethodNode mth, InsnNode[] insnByOffset) {
    for (int offset = 0; offset < insnByOffset.length; offset++) {
        InsnNode insn = insnByOffset[offset];
        if (insn == null) {
            continue;
        }
        switch(insn.getType()) {
            case SWITCH:
                SwitchInsn sw = (SwitchInsn) insn;
                if (sw.needData()) {
                    attachSwitchData(insnByOffset, offset, sw);
                }
                int defCaseOffset = sw.getDefaultCaseOffset();
                if (defCaseOffset != -1) {
                    addJump(mth, insnByOffset, offset, defCaseOffset);
                }
                for (int target : sw.getTargets()) {
                    addJump(mth, insnByOffset, offset, target);
                }
                break;
            case IF:
                int next = getNextInsnOffset(insnByOffset, offset);
                if (next != -1) {
                    addJump(mth, insnByOffset, offset, next);
                }
                addJump(mth, insnByOffset, offset, ((IfNode) insn).getTarget());
                break;
            case GOTO:
                addJump(mth, insnByOffset, offset, ((GotoNode) insn).getTarget());
                break;
            case INVOKE:
                if (insn.getResult() == null) {
                    ArgType retType = ((BaseInvokeNode) insn).getCallMth().getReturnType();
                    mergeMoveResult(insnByOffset, offset, insn, retType);
                }
                break;
            case STR_CONCAT:
                // invoke-custom with string concatenation translated directly to STR_CONCAT, merge next move-result
                if (insn.getResult() == null) {
                    mergeMoveResult(insnByOffset, offset, insn, ArgType.STRING);
                }
                break;
            case FILLED_NEW_ARRAY:
                ArgType arrType = ((FilledNewArrayNode) insn).getArrayType();
                mergeMoveResult(insnByOffset, offset, insn, arrType);
                break;
            case FILL_ARRAY:
                FillArrayInsn fillArrayInsn = (FillArrayInsn) insn;
                int target = fillArrayInsn.getTarget();
                InsnNode arrDataInsn = getInsnAtOffset(insnByOffset, target);
                if (arrDataInsn != null && arrDataInsn.getType() == InsnType.FILL_ARRAY_DATA) {
                    fillArrayInsn.setArrayData((FillArrayData) arrDataInsn);
                    removeInsn(insnByOffset, arrDataInsn);
                } else {
                    throw new JadxRuntimeException("Payload for fill-array not found at " + InsnUtils.formatOffset(target));
                }
                break;
            default:
                break;
        }
    }
}

Example 4 with SwitchInsn

use of jadx.core.dex.instructions.SwitchInsn in project jadx by skylot.

the class RegionMaker method traverse.

/**
 * Recursively traverse all blocks from 'block' until block from 'exits'
 */
private BlockNode traverse(IRegion r, BlockNode block, RegionStack stack) {
    if (block.contains(AFlag.MTH_EXIT_BLOCK)) {
        return null;
    }
    BlockNode next = null;
    boolean processed = false;
    List<LoopInfo> loops = block.getAll(AType.LOOP);
    int loopCount = loops.size();
    if (loopCount != 0 && block.contains(AFlag.LOOP_START)) {
        if (loopCount == 1) {
            next = processLoop(r, loops.get(0), stack);
            processed = true;
        } else {
            for (LoopInfo loop : loops) {
                if (loop.getStart() == block) {
                    next = processLoop(r, loop, stack);
                    processed = true;
                    break;
                }
            }
        }
    }
    InsnNode insn = BlockUtils.getLastInsn(block);
    if (!processed && insn != null) {
        switch(insn.getType()) {
            case IF:
                next = processIf(r, block, (IfNode) insn, stack);
                processed = true;
                break;
            case SWITCH:
                next = processSwitch(r, block, (SwitchInsn) insn, stack);
                processed = true;
                break;
            case MONITOR_ENTER:
                next = processMonitorEnter(r, block, insn, stack);
                processed = true;
                break;
            default:
                break;
        }
    }
    if (!processed) {
        r.getSubBlocks().add(block);
        next = getNextBlock(block);
    }
    if (next != null && !stack.containsExit(block) && !stack.containsExit(next)) {
        return next;
    }
    return null;
}