diff --git a/libs/binder/Android.bp b/libs/binder/Android.bp
index 905b25f..760d55b 100644
--- a/libs/binder/Android.bp
+++ b/libs/binder/Android.bp
@@ -94,7 +94,6 @@
                 "PermissionController.cpp",
                 "ProcessInfoService.cpp",
                 "IpPrefix.cpp",
-                ":libbinder_aidl",
             ],
         },
     },
@@ -142,8 +141,7 @@
     name: "libbinder_aidl",
     srcs: [
         "aidl/android/content/pm/IPackageManagerNative.aidl",
+        "aidl/android/os/IServiceManager.aidl",
     ],
     path: "aidl",
 }
-
-subdirs = ["tests"]
diff --git a/libs/binder/IPCThreadState.cpp b/libs/binder/IPCThreadState.cpp
index a2d10ab..3424c28 100644
--- a/libs/binder/IPCThreadState.cpp
+++ b/libs/binder/IPCThreadState.cpp
@@ -1062,7 +1062,7 @@
 
 sp<BBinder> the_context_object;
 
-void setTheContextObject(sp<BBinder> obj)
+void IPCThreadState::setTheContextObject(sp<BBinder> obj)
 {
     the_context_object = obj;
 }
diff --git a/libs/binder/IServiceManager.cpp b/libs/binder/IServiceManager.cpp
index 0203d41..07550fb 100644
--- a/libs/binder/IServiceManager.cpp
+++ b/libs/binder/IServiceManager.cpp
@@ -18,6 +18,7 @@
 
 #include <binder/IServiceManager.h>
 
+#include <android/os/IServiceManager.h>
 #include <utils/Log.h>
 #include <binder/IPCThreadState.h>
 #ifndef __ANDROID_VNDK__
@@ -34,6 +35,9 @@
 
 namespace android {
 
+using AidlServiceManager = android::os::IServiceManager;
+using android::binder::Status;
+
 sp<IServiceManager> defaultServiceManager()
 {
     static Mutex gDefaultServiceManagerLock;
@@ -142,11 +146,12 @@
 {
 public:
     explicit BpServiceManager(const sp<IBinder>& impl)
-        : BpInterface<IServiceManager>(impl)
+        : BpInterface<IServiceManager>(impl),
+          mTheRealServiceManager(interface_cast<AidlServiceManager>(impl))
     {
     }
 
-    virtual sp<IBinder> getService(const String16& name) const
+    sp<IBinder> getService(const String16& name) const override
     {
         static bool gSystemBootCompleted = false;
 
@@ -179,43 +184,36 @@
         return nullptr;
     }
 
-    virtual sp<IBinder> checkService( const String16& name) const
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(IServiceManager::getInterfaceDescriptor());
-        data.writeString16(name);
-        remote()->transact(CHECK_SERVICE_TRANSACTION, data, &reply);
-        return reply.readStrongBinder();
+    sp<IBinder> checkService(const String16& name) const override {
+        sp<IBinder> ret;
+        if (!mTheRealServiceManager->checkService(String8(name).c_str(), &ret).isOk()) {
+            return nullptr;
+        }
+        return ret;
     }
 
-    virtual status_t addService(const String16& name, const sp<IBinder>& service,
-                                bool allowIsolated, int dumpsysPriority) {
-        Parcel data, reply;
-        data.writeInterfaceToken(IServiceManager::getInterfaceDescriptor());
-        data.writeString16(name);
-        data.writeStrongBinder(service);
-        data.writeInt32(allowIsolated ? 1 : 0);
-        data.writeInt32(dumpsysPriority);
-        status_t err = remote()->transact(ADD_SERVICE_TRANSACTION, data, &reply);
-        return err == NO_ERROR ? reply.readExceptionCode() : err;
+    status_t addService(const String16& name, const sp<IBinder>& service,
+                        bool allowIsolated, int dumpsysPriority) override {
+        Status status = mTheRealServiceManager->addService(String8(name).c_str(), service, allowIsolated, dumpsysPriority);
+        return status.exceptionCode();
     }
 
     virtual Vector<String16> listServices(int dumpsysPriority) {
-        Vector<String16> res;
-        int n = 0;
+        std::vector<std::string> ret;
+        if (!mTheRealServiceManager->listServices(dumpsysPriority, &ret).isOk()) {
+            return {};
+        }
 
-        for (;;) {
-            Parcel data, reply;
-            data.writeInterfaceToken(IServiceManager::getInterfaceDescriptor());
-            data.writeInt32(n++);
-            data.writeInt32(dumpsysPriority);
-            status_t err = remote()->transact(LIST_SERVICES_TRANSACTION, data, &reply);
-            if (err != NO_ERROR)
-                break;
-            res.add(reply.readString16());
+        Vector<String16> res;
+        res.setCapacity(ret.size());
+        for (const std::string& name : ret) {
+            res.push(String16(name.c_str()));
         }
         return res;
     }
+
+private:
+    sp<AidlServiceManager> mTheRealServiceManager;
 };
 
 IMPLEMENT_META_INTERFACE(ServiceManager, "android.os.IServiceManager");
diff --git a/libs/binder/aidl/android/os/IServiceManager.aidl b/libs/binder/aidl/android/os/IServiceManager.aidl
new file mode 100644
index 0000000..50a72aa
--- /dev/null
+++ b/libs/binder/aidl/android/os/IServiceManager.aidl
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2006 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.os;
+
+/**
+ * Basic interface for finding and publishing system services.
+ *
+ * You likely want to use android.os.ServiceManager in Java or
+ * android::IServiceManager in C++ in order to use this interface.
+ *
+ * @hide
+ */
+interface IServiceManager {
+    /*
+     * Must update values in IServiceManager.h
+     */
+    /* Allows services to dump sections according to priorities. */
+    const int DUMP_FLAG_PRIORITY_CRITICAL = 1; // 1 << 0
+    const int DUMP_FLAG_PRIORITY_HIGH = 2; // 1 << 1
+    const int DUMP_FLAG_PRIORITY_NORMAL = 4; // 1 << 2
+    /**
+     * Services are by default registered with a DEFAULT dump priority. DEFAULT priority has the
+     * same priority as NORMAL priority but the services are not called with dump priority
+     * arguments.
+     */
+    const int DUMP_FLAG_PRIORITY_DEFAULT = 8; // 1 << 3
+
+    const int DUMP_FLAG_PRIORITY_ALL = 15;
+             // DUMP_FLAG_PRIORITY_CRITICAL | DUMP_FLAG_PRIORITY_HIGH
+             // | DUMP_FLAG_PRIORITY_NORMAL | DUMP_FLAG_PRIORITY_DEFAULT;
+
+    /* Allows services to dump sections in protobuf format. */
+    const int DUMP_FLAG_PROTO = 16; // 1 << 4
+
+    /**
+     * Retrieve an existing service called @a name from the
+     * service manager.
+     *
+     * This is the same as checkService (returns immediately) but
+     * exists for legacy purposes.
+     *
+     * Returns null if the service does not exist.
+     */
+    @UnsupportedAppUsage
+    IBinder getService(@utf8InCpp String name);
+
+    /**
+     * Retrieve an existing service called @a name from the service
+     * manager. Non-blocking. Returns null if the service does not
+     * exist.
+     */
+    @UnsupportedAppUsage
+    IBinder checkService(@utf8InCpp String name);
+
+    /**
+     * Place a new @a service called @a name into the service
+     * manager.
+     */
+    void addService(@utf8InCpp String name, IBinder service,
+        boolean allowIsolated, int dumpPriority);
+
+    /**
+     * Return a list of all currently running services.
+     */
+    @utf8InCpp String[] listServices(int dumpPriority);
+}
diff --git a/libs/binder/include/binder/IPCThreadState.h b/libs/binder/include/binder/IPCThreadState.h
index 614b0b3..b810f7e 100644
--- a/libs/binder/include/binder/IPCThreadState.h
+++ b/libs/binder/include/binder/IPCThreadState.h
@@ -110,6 +110,8 @@
             // the maximum number of binder threads threads allowed for this process.
             void                blockUntilThreadAvailable();
 
+            // Service manager registration
+            void                setTheContextObject(sp<BBinder> obj);
 
             // Is this thread currently serving a binder call. This method
             // returns true if while traversing backwards from the function call