android: Realign stack pointer on JNI entry.

base/android/jni_generator/testNativeExportsOnlyOption.golden

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file is autogenerated by
 //     base/android/jni_generator/jni_generator.py
 // For
 //     org/chromium/example/jni_generator/SampleForTests
 
 #ifndef org_chromium_example_jni_generator_SampleForTests_JNI
@@ skipping 10 matching lines @@
 const char kSampleForTestsClassPath[] =
     "org/chromium/example/jni_generator/SampleForTests";
 // Leaking this jclass as we cannot use LazyInstance from some threads.
 base::subtle::AtomicWord g_SampleForTests_clazz __attribute__((unused)) = 0;
 #define SampleForTests_clazz(env) base::android::LazyGetClass(env, kSampleForTestsClassPath, &g_SampleForTests_clazz)
 
 }  // namespace
 
 // Step 2: method stubs.
 extern "C" __attribute__((visibility("default")))
+#if defined(ARCH_CPU_X86)
+__attribute__((force_align_arg_pointer))
+#endif
 jint
     Java_org_chromium_example_jni_1generator_SampleForTests_nativeStaticMethod(JNIEnv*
     env,
     jobject jcaller,
     jlong nativeTest,
     jint arg1) {
   Test* native = reinterpret_cast<Test*>(nativeTest);
   CHECK_NATIVE_PTR(env, jcaller, native, "StaticMethod", 0);
   return native->StaticMethod(env, base::android::JavaParamRef<jobject>(env,
       jcaller), arg1);
 }
 
 extern "C" __attribute__((visibility("default")))
+#if defined(ARCH_CPU_X86)
+__attribute__((force_align_arg_pointer))
+#endif
 jint
     Java_org_chromium_example_jni_1generator_SampleForTests_nativeMethod(JNIEnv*
     env,
     jobject jcaller,
     jlong nativeTest,
     jint arg1) {
   Test* native = reinterpret_cast<Test*>(nativeTest);
   CHECK_NATIVE_PTR(env, jcaller, native, "Method", 0);
   return native->Method(env, base::android::JavaParamRef<jobject>(env, jcaller),
       arg1);
 }
 
 static jint Init(JNIEnv* env, const base::android::JavaParamRef<jobject>&
     jcaller);
 
 extern "C" __attribute__((visibility("default")))
+#if defined(ARCH_CPU_X86)
+__attribute__((force_align_arg_pointer))
+#endif
 jint
     Java_org_chromium_example_jni_1generator_SampleForTests_00024MyInnerClass_nativeInit(JNIEnv*
     env, jobject jcaller) {
   return Init(env, base::android::JavaParamRef<jobject>(env, jcaller));
 }
 
 static jint Init(JNIEnv* env, const base::android::JavaParamRef<jobject>&
     jcaller);
 
 extern "C" __attribute__((visibility("default")))
+#if defined(ARCH_CPU_X86)
+__attribute__((force_align_arg_pointer))
+#endif
 jint
     Java_org_chromium_example_jni_1generator_SampleForTests_00024MyOtherInnerClass_nativeInit(JNIEnv*
     env, jobject jcaller) {
   return Init(env, base::android::JavaParamRef<jobject>(env, jcaller));
 }
 
 static base::subtle::AtomicWord g_SampleForTests_testMethodWithParam = 0;
 static void Java_SampleForTests_testMethodWithParam(JNIEnv* env, const
     base::android::JavaRefOrBare<jobject>& obj, JniIntWrapper iParam) {
   CHECK_CLAZZ(env, obj.obj(),
@@ skipping 102 matching lines @@
   jstring ret =
 static_cast<jstring>(env->CallStaticObjectMethod(SampleForTests_clazz(env),
           method_id));
   jni_generator::CheckException(env);
   return base::android::ScopedJavaLocalRef<jstring>(env, ret);
 }
 
 // Step 3: RegisterNatives.
 
 #endif  // org_chromium_example_jni_generator_SampleForTests_JNI