1 files changed, 114 insertions, 0 deletions
diff --git a/test/115-native-bridge/nativebridge.cc b/test/115-native-bridge/nativebridge.cc
new file mode 100644
index 0000000..bd3ae13
--- /dev/null
+++ b/test/115-native-bridge/nativebridge.cc
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+// A simple implementation of the native-bridge interface.
+
+#include <algorithm>
+#include <dlfcn.h>
+#include <vector>
+
+#include "jni.h"
+#include "stdio.h"
+#include "string.h"
+#include "unistd.h"
+
+#include "native_bridge.h"
+
+
+// Native bridge interfaces...
+
+struct NativeBridgeArtCallbacks {
+  const char* (*getMethodShorty)(JNIEnv* env, jmethodID mid);
+  int (*getNativeMethodCount)(JNIEnv* env, jclass clazz);
+  int (*getNativeMethods)(JNIEnv* env, jclass clazz, JNINativeMethod* methods,
+       uint32_t method_count);
+};
+
+struct NativeBridgeCallbacks {
+  bool (*initialize)(NativeBridgeArtCallbacks* art_cbs);
+  void* (*loadLibrary)(const char* libpath, int flag);
+  void* (*getTrampoline)(void* handle, const char* name, const char* shorty, uint32_t len);
+  bool (*isSupported)(const char* libpath);
+};
+
+
+
+static std::vector<void*> symbols;
+
+// NativeBridgeCallbacks implementations
+extern "C" bool native_bridge_initialize(NativeBridgeArtCallbacks* art_cbs) {
+  printf("Native bridge initialized.\n");
+  return true;
+}
+
+extern "C" void* native_bridge_loadLibrary(const char* libpath, int flag) {
+  size_t len = strlen(libpath);
+  char* tmp = new char[len + 10];
+  strncpy(tmp, libpath, len);
+  tmp[len - 3] = '2';
+  tmp[len - 2] = '.';
+  tmp[len - 1] = 's';
+  tmp[len] = 'o';
+  tmp[len + 1] = 0;
+  void* handle = dlopen(tmp, flag);
+  delete[] tmp;
+
+  if (handle == nullptr) {
+    printf("Handle = nullptr!\n");
+    printf("Was looking for %s.\n", libpath);
+    printf("Error = %s.\n", dlerror());
+    char cwd[1024];
+    if (getcwd(cwd, sizeof(cwd)) != nullptr) {
+      printf("Current working dir: %s\n", cwd);
+    }
+  }
+  return handle;
+}
+
+extern "C" void* native_bridge_getTrampoline(void* handle, const char* name, const char* shorty,
+                                             uint32_t len) {
+  printf("Getting trampoline.\n");
+
+  // The name here is actually the JNI name, so we can directly do the lookup.
+  void* sym = dlsym(handle, name);
+  if (sym != nullptr) {
+    symbols.push_back(sym);
+  }
+
+  // As libarttest is the same arch as the host, we can actually directly use the code and do not
+  // need to create a trampoline. :-)
+  return sym;
+}
+
+extern "C" bool native_bridge_isSupported(const char* libpath) {
+  printf("Checking for support.\n");
+
+  if (libpath == nullptr) {
+    return false;
+  }
+  // We don't want to hijack javacore. So we should get libarttest...
+  return strcmp(libpath, "libjavacore.so") != 0;
+}
+
+NativeBridgeCallbacks NativeBridgeItf {
+  .initialize = &native_bridge_initialize,
+  .loadLibrary = &native_bridge_loadLibrary,
+  .getTrampoline = &native_bridge_getTrampoline,
+  .isSupported = &native_bridge_isSupported
+};
+
+
+