/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// A simple implementation of the native-bridge interface.
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#include <dlfcn.h>
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#include <setjmp.h>
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#include <signal.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <algorithm>
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#include <cstdio>
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#include <cstdlib>
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#include <vector>
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#include <jni.h>
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#include <nativebridge/native_bridge.h>
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#include "base/macros.h"
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struct NativeBridgeMethod {
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const char* name;
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const char* signature;
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bool static_method;
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void* fnPtr;
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void* trampoline;
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};
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static NativeBridgeMethod* find_native_bridge_method(const char *name);
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static const android::NativeBridgeRuntimeCallbacks* gNativeBridgeArtCallbacks;
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static jint trampoline_JNI_OnLoad(JavaVM* vm, void* reserved) {
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JNIEnv* env = nullptr;
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using FnPtr_t = jint(*)(JavaVM*, void*);
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FnPtr_t fnPtr = reinterpret_cast<FnPtr_t>(find_native_bridge_method("JNI_OnLoad")->fnPtr);
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vm->GetEnv(reinterpret_cast<void **>(&env), JNI_VERSION_1_6);
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if (env == nullptr) {
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return 0;
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}
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jclass klass = env->FindClass("Main");
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if (klass != nullptr) {
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int i, count1, count2;
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count1 = gNativeBridgeArtCallbacks->getNativeMethodCount(env, klass);
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std::unique_ptr<JNINativeMethod[]> methods(new JNINativeMethod[count1]);
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if (methods == nullptr) {
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return 0;
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}
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count2 = gNativeBridgeArtCallbacks->getNativeMethods(env, klass, methods.get(), count1);
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if (count1 == count2) {
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printf("Test ART callbacks: all JNI function number is %d.\n", count1);
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}
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for (i = 0; i < count1; i++) {
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NativeBridgeMethod* nb_method = find_native_bridge_method(methods[i].name);
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if (nb_method != nullptr) {
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jmethodID mid = nullptr;
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if (nb_method->static_method) {
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mid = env->GetStaticMethodID(klass, methods[i].name, nb_method->signature);
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} else {
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mid = env->GetMethodID(klass, methods[i].name, nb_method->signature);
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}
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if (mid != nullptr) {
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const char* shorty = gNativeBridgeArtCallbacks->getMethodShorty(env, mid);
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if (strcmp(shorty, methods[i].signature) == 0) {
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printf(" name:%s, signature:%s, shorty:%s.\n",
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methods[i].name, nb_method->signature, shorty);
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}
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}
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}
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}
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methods.release();
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}
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printf("%s called!\n", __FUNCTION__);
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return fnPtr(vm, reserved);
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}
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static void trampoline_Java_Main_testFindClassOnAttachedNativeThread(JNIEnv* env, jclass klass) {
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using FnPtr_t = void(*)(JNIEnv*, jclass);
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FnPtr_t fnPtr = reinterpret_cast<FnPtr_t>
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(find_native_bridge_method("testFindClassOnAttachedNativeThread")->fnPtr);
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printf("%s called!\n", __FUNCTION__);
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return fnPtr(env, klass);
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}
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static void trampoline_Java_Main_testFindFieldOnAttachedNativeThreadNative(JNIEnv* env,
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jclass klass) {
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using FnPtr_t = void(*)(JNIEnv*, jclass);
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FnPtr_t fnPtr = reinterpret_cast<FnPtr_t>
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(find_native_bridge_method("testFindFieldOnAttachedNativeThreadNative")->fnPtr);
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printf("%s called!\n", __FUNCTION__);
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return fnPtr(env, klass);
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}
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static void trampoline_Java_Main_testCallStaticVoidMethodOnSubClassNative(JNIEnv* env,
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jclass klass) {
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using FnPtr_t = void(*)(JNIEnv*, jclass);
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FnPtr_t fnPtr = reinterpret_cast<FnPtr_t>
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(find_native_bridge_method("testCallStaticVoidMethodOnSubClassNative")->fnPtr);
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printf("%s called!\n", __FUNCTION__);
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return fnPtr(env, klass);
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}
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static jobject trampoline_Java_Main_testGetMirandaMethodNative(JNIEnv* env, jclass klass) {
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using FnPtr_t = jobject(*)(JNIEnv*, jclass);
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FnPtr_t fnPtr = reinterpret_cast<FnPtr_t>
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(find_native_bridge_method("testGetMirandaMethodNative")->fnPtr);
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printf("%s called!\n", __FUNCTION__);
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return fnPtr(env, klass);
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}
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static void trampoline_Java_Main_testNewStringObject(JNIEnv* env, jclass klass) {
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using FnPtr_t = void(*)(JNIEnv*, jclass);
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FnPtr_t fnPtr = reinterpret_cast<FnPtr_t>
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(find_native_bridge_method("testNewStringObject")->fnPtr);
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printf("%s called!\n", __FUNCTION__);
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return fnPtr(env, klass);
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}
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static void trampoline_Java_Main_testZeroLengthByteBuffers(JNIEnv* env, jclass klass) {
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using FnPtr_t = void(*)(JNIEnv*, jclass);
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FnPtr_t fnPtr = reinterpret_cast<FnPtr_t>
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(find_native_bridge_method("testZeroLengthByteBuffers")->fnPtr);
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printf("%s called!\n", __FUNCTION__);
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return fnPtr(env, klass);
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}
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static jbyte trampoline_Java_Main_byteMethod(JNIEnv* env, jclass klass, jbyte b1, jbyte b2,
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jbyte b3, jbyte b4, jbyte b5, jbyte b6,
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jbyte b7, jbyte b8, jbyte b9, jbyte b10) {
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using FnPtr_t = jbyte(*)(JNIEnv*, jclass, jbyte, jbyte, jbyte, jbyte, jbyte, jbyte, jbyte, jbyte,
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jbyte, jbyte);
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FnPtr_t fnPtr = reinterpret_cast<FnPtr_t>(find_native_bridge_method("byteMethod")->fnPtr);
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printf("%s called!\n", __FUNCTION__);
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return fnPtr(env, klass, b1, b2, b3, b4, b5, b6, b7, b8, b9, b10);
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}
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static jshort trampoline_Java_Main_shortMethod(JNIEnv* env, jclass klass, jshort s1, jshort s2,
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jshort s3, jshort s4, jshort s5, jshort s6,
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jshort s7, jshort s8, jshort s9, jshort s10) {
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using FnPtr_t = jshort(*)(JNIEnv*, jclass, jshort, jshort, jshort, jshort, jshort, jshort, jshort,
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jshort, jshort, jshort);
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FnPtr_t fnPtr = reinterpret_cast<FnPtr_t>(find_native_bridge_method("shortMethod")->fnPtr);
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printf("%s called!\n", __FUNCTION__);
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return fnPtr(env, klass, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10);
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}
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static jboolean trampoline_Java_Main_booleanMethod(JNIEnv* env, jclass klass, jboolean b1,
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jboolean b2, jboolean b3, jboolean b4,
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jboolean b5, jboolean b6, jboolean b7,
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jboolean b8, jboolean b9, jboolean b10) {
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using FnPtr_t = jboolean(*)(JNIEnv*, jclass, jboolean, jboolean, jboolean, jboolean, jboolean,
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jboolean, jboolean, jboolean, jboolean, jboolean);
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FnPtr_t fnPtr = reinterpret_cast<FnPtr_t>(find_native_bridge_method("booleanMethod")->fnPtr);
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printf("%s called!\n", __FUNCTION__);
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return fnPtr(env, klass, b1, b2, b3, b4, b5, b6, b7, b8, b9, b10);
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}
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static jchar trampoline_Java_Main_charMethod(JNIEnv* env, jclass klass, jchar c1, jchar c2,
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jchar c3, jchar c4, jchar c5, jchar c6,
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jchar c7, jchar c8, jchar c9, jchar c10) {
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using FnPtr_t = jchar(*)(JNIEnv*, jclass, jchar, jchar, jchar, jchar, jchar, jchar, jchar, jchar,
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jchar, jchar);
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FnPtr_t fnPtr = reinterpret_cast<FnPtr_t>(find_native_bridge_method("charMethod")->fnPtr);
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printf("%s called!\n", __FUNCTION__);
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return fnPtr(env, klass, c1, c2, c3, c4, c5, c6, c7, c8, c9, c10);
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}
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// This code is adapted from 004-SignalTest and causes a segfault.
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char *go_away_compiler = nullptr;
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[[ noreturn ]] static void test_sigaction_handler(int sig ATTRIBUTE_UNUSED,
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siginfo_t* info ATTRIBUTE_UNUSED,
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void* context ATTRIBUTE_UNUSED) {
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printf("Should not reach the test sigaction handler.");
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abort();
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}
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static void raise_sigsegv() {
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#if defined(__arm__) || defined(__i386__) || defined(__aarch64__)
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*go_away_compiler = 'a';
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#elif defined(__x86_64__)
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// Cause a SEGV using an instruction known to be 2 bytes long to account for hardcoded jump
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// in the signal handler
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asm volatile("movl $0, %%eax;" "movb %%ah, (%%rax);" : : : "%eax");
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#else
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// On other architectures we simulate SEGV.
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kill(getpid(), SIGSEGV);
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#endif
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}
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static jint trampoline_Java_Main_testSignal(JNIEnv*, jclass) {
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// Install the sigaction handler above, which should *not* be reached as the native-bridge
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// handler should be called first. Note: we won't chain at all, if we ever get here, we'll die.
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struct sigaction tmp;
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sigemptyset(&tmp.sa_mask);
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tmp.sa_sigaction = test_sigaction_handler;
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#if !defined(__APPLE__) && !defined(__mips__)
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tmp.sa_restorer = nullptr;
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#endif
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// Test segv
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sigaction(SIGSEGV, &tmp, nullptr);
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raise_sigsegv();
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// Test sigill
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sigaction(SIGILL, &tmp, nullptr);
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kill(getpid(), SIGILL);
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#if defined(__BIONIC__)
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// Do the same again, but with sigaction64.
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struct sigaction64 tmp2;
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sigemptyset64(&tmp2.sa_mask);
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tmp2.sa_sigaction = test_sigaction_handler;
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#if defined(SA_RESTORER)
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tmp2.sa_restorer = nullptr;
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#endif
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sigaction64(SIGSEGV, &tmp2, nullptr);
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sigaction64(SIGILL, &tmp2, nullptr);
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#endif
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// Reraise SIGSEGV/SIGILL even on non-bionic, so that the expected output is
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// the same.
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raise_sigsegv();
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kill(getpid(), SIGILL);
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return 1234;
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}
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// Status of the tricky control path of testSignalHandlerNotReturn.
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//
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// "kNone" is the default status except testSignalHandlerNotReturn,
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// others are used by testSignalHandlerNotReturn.
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enum class TestStatus {
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kNone,
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kRaiseFirst,
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kHandleFirst,
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kRaiseSecond,
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kHandleSecond,
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};
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// State transition helper for testSignalHandlerNotReturn.
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class SignalHandlerTestStatus {
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public:
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SignalHandlerTestStatus() : state_(TestStatus::kNone) {
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}
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TestStatus Get() {
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return state_;
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}
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void Reset() {
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Set(TestStatus::kNone);
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}
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void Set(TestStatus state) {
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switch (state) {
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case TestStatus::kNone:
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AssertState(TestStatus::kHandleSecond);
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break;
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case TestStatus::kRaiseFirst:
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AssertState(TestStatus::kNone);
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break;
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case TestStatus::kHandleFirst:
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AssertState(TestStatus::kRaiseFirst);
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break;
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case TestStatus::kRaiseSecond:
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AssertState(TestStatus::kHandleFirst);
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break;
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case TestStatus::kHandleSecond:
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AssertState(TestStatus::kRaiseSecond);
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break;
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default:
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printf("ERROR: unknown state\n");
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abort();
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}
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state_ = state;
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}
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private:
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TestStatus state_;
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void AssertState(TestStatus expected) {
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if (state_ != expected) {
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printf("ERROR: unexpected state, was %d, expected %d\n", state_, expected);
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}
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}
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};
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static SignalHandlerTestStatus gSignalTestStatus;
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// The context is used to jump out from signal handler.
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static sigjmp_buf gSignalTestJmpBuf;
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// Test whether NativeBridge can receive future signal when its handler doesn't return.
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//
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// Control path:
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// 1. Raise first SIGSEGV in test function.
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// 2. Raise another SIGSEGV in NativeBridge's signal handler which is handling
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// the first SIGSEGV.
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// 3. Expect that NativeBridge's signal handler invokes again. And jump back
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// to test function in when handling second SIGSEGV.
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// 4. Exit test.
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//
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// NOTE: sigchain should be aware that "special signal handler" may not return.
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// Pay attention if this case fails.
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static void trampoline_Java_Main_testSignalHandlerNotReturn(JNIEnv*, jclass) {
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if (gSignalTestStatus.Get() != TestStatus::kNone) {
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printf("ERROR: test already started?\n");
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return;
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}
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printf("start testSignalHandlerNotReturn\n");
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if (sigsetjmp(gSignalTestJmpBuf, 1) == 0) {
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gSignalTestStatus.Set(TestStatus::kRaiseFirst);
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printf("raising first SIGSEGV\n");
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raise_sigsegv();
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} else {
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// jump to here from signal handler when handling second SIGSEGV.
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if (gSignalTestStatus.Get() != TestStatus::kHandleSecond) {
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printf("ERROR: not jump from second SIGSEGV?\n");
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return;
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}
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gSignalTestStatus.Reset();
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printf("back to test from signal handler via siglongjmp(), and done!\n");
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}
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}
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// Signal handler for testSignalHandlerNotReturn.
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// This handler won't return.
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static bool NotReturnSignalHandler() {
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if (gSignalTestStatus.Get() == TestStatus::kRaiseFirst) {
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// handling first SIGSEGV
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gSignalTestStatus.Set(TestStatus::kHandleFirst);
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printf("handling first SIGSEGV, will raise another\n");
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sigset_t set;
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sigemptyset(&set);
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sigaddset(&set, SIGSEGV);
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printf("unblock SIGSEGV in handler\n");
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sigprocmask(SIG_UNBLOCK, &set, nullptr);
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gSignalTestStatus.Set(TestStatus::kRaiseSecond);
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printf("raising second SIGSEGV\n");
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raise_sigsegv(); // raise second SIGSEGV
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} else if (gSignalTestStatus.Get() == TestStatus::kRaiseSecond) {
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// handling second SIGSEGV
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gSignalTestStatus.Set(TestStatus::kHandleSecond);
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printf("handling second SIGSEGV, will jump back to test function\n");
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siglongjmp(gSignalTestJmpBuf, 1);
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}
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printf("ERROR: should not reach here!\n");
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return false;
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}
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NativeBridgeMethod gNativeBridgeMethods[] = {
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{ "JNI_OnLoad", "", true, nullptr,
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reinterpret_cast<void*>(trampoline_JNI_OnLoad) },
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{ "booleanMethod", "(ZZZZZZZZZZ)Z", true, nullptr,
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reinterpret_cast<void*>(trampoline_Java_Main_booleanMethod) },
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{ "byteMethod", "(BBBBBBBBBB)B", true, nullptr,
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reinterpret_cast<void*>(trampoline_Java_Main_byteMethod) },
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{ "charMethod", "(CCCCCCCCCC)C", true, nullptr,
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reinterpret_cast<void*>(trampoline_Java_Main_charMethod) },
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{ "shortMethod", "(SSSSSSSSSS)S", true, nullptr,
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reinterpret_cast<void*>(trampoline_Java_Main_shortMethod) },
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{ "testCallStaticVoidMethodOnSubClassNative", "()V", true, nullptr,
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reinterpret_cast<void*>(trampoline_Java_Main_testCallStaticVoidMethodOnSubClassNative) },
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{ "testFindClassOnAttachedNativeThread", "()V", true, nullptr,
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reinterpret_cast<void*>(trampoline_Java_Main_testFindClassOnAttachedNativeThread) },
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{ "testFindFieldOnAttachedNativeThreadNative", "()V", true, nullptr,
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reinterpret_cast<void*>(trampoline_Java_Main_testFindFieldOnAttachedNativeThreadNative) },
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{ "testGetMirandaMethodNative", "()Ljava/lang/reflect/Method;", true, nullptr,
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reinterpret_cast<void*>(trampoline_Java_Main_testGetMirandaMethodNative) },
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{ "testNewStringObject", "()V", true, nullptr,
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reinterpret_cast<void*>(trampoline_Java_Main_testNewStringObject) },
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{ "testZeroLengthByteBuffers", "()V", true, nullptr,
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reinterpret_cast<void*>(trampoline_Java_Main_testZeroLengthByteBuffers) },
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{ "testSignal", "()I", true, nullptr,
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reinterpret_cast<void*>(trampoline_Java_Main_testSignal) },
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{ "testSignalHandlerNotReturn", "()V", true, nullptr,
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reinterpret_cast<void*>(trampoline_Java_Main_testSignalHandlerNotReturn) },
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};
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static NativeBridgeMethod* find_native_bridge_method(const char *name) {
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const char* pname = name;
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if (strncmp(name, "Java_Main_", 10) == 0) {
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pname += 10;
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}
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for (size_t i = 0; i < sizeof(gNativeBridgeMethods) / sizeof(gNativeBridgeMethods[0]); i++) {
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if (strcmp(pname, gNativeBridgeMethods[i].name) == 0) {
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return &gNativeBridgeMethods[i];
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}
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}
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return nullptr;
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}
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// NativeBridgeCallbacks implementations
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extern "C" bool native_bridge_initialize(const android::NativeBridgeRuntimeCallbacks* art_cbs,
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const char* app_code_cache_dir,
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const char* isa ATTRIBUTE_UNUSED) {
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struct stat st;
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if (app_code_cache_dir != nullptr) {
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if (stat(app_code_cache_dir, &st) == 0) {
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if (!S_ISDIR(st.st_mode)) {
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printf("Code cache is not a directory.\n");
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}
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} else {
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perror("Error when stat-ing the code_cache:");
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}
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}
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if (art_cbs != nullptr) {
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gNativeBridgeArtCallbacks = art_cbs;
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printf("Native bridge initialized.\n");
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}
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return true;
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}
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extern "C" void* native_bridge_loadLibrary(const char* libpath, int flag) {
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if (strstr(libpath, "libinvalid.so") != nullptr) {
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printf("Was to load 'libinvalid.so', force fail.\n");
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return nullptr;
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}
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size_t len = strlen(libpath);
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char* tmp = new char[len + 10];
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strncpy(tmp, libpath, len);
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tmp[len - 3] = '2';
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tmp[len - 2] = '.';
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tmp[len - 1] = 's';
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tmp[len] = 'o';
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tmp[len + 1] = 0;
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void* handle = dlopen(tmp, flag);
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delete[] tmp;
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if (handle == nullptr) {
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printf("Handle = nullptr!\n");
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printf("Was looking for %s.\n", libpath);
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printf("Error = %s.\n", dlerror());
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char cwd[1024] = {'\0'};
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if (getcwd(cwd, sizeof(cwd)) != nullptr) {
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printf("Current working dir: %s\n", cwd);
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}
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}
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return handle;
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}
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extern "C" void* native_bridge_getTrampoline(void* handle, const char* name, const char* shorty,
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uint32_t len ATTRIBUTE_UNUSED) {
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printf("Getting trampoline for %s with shorty %s.\n", name, shorty);
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// The name here is actually the JNI name, so we can directly do the lookup.
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void* sym = dlsym(handle, name);
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NativeBridgeMethod* method = find_native_bridge_method(name);
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if (method == nullptr)
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return nullptr;
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method->fnPtr = sym;
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return method->trampoline;
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}
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extern "C" bool native_bridge_isSupported(const char* libpath) {
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printf("Checking for support.\n");
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if (libpath == nullptr) {
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return false;
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}
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// We don't want to hijack javacore. So we should get libarttest...
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return strcmp(libpath, "libjavacore.so") != 0;
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}
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namespace android {
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// Environment values required by the apps running with native bridge.
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struct NativeBridgeRuntimeValues {
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const char* os_arch;
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const char* cpu_abi;
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const char* cpu_abi2;
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const char* *supported_abis;
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int32_t abi_count;
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};
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} // namespace android
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const char* supported_abis[] = {
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"supported1", "supported2", "supported3"
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};
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const struct android::NativeBridgeRuntimeValues nb_env {
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.os_arch = "os.arch",
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.cpu_abi = "cpu_abi",
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.cpu_abi2 = "cpu_abi2",
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.supported_abis = supported_abis,
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.abi_count = 3
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};
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extern "C" const struct android::NativeBridgeRuntimeValues* native_bridge_getAppEnv(
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const char* abi) {
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printf("Checking for getEnvValues.\n");
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if (abi == nullptr) {
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return nullptr;
|
}
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return &nb_env;
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}
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// v2 parts.
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extern "C" bool native_bridge_isCompatibleWith(uint32_t bridge_version ATTRIBUTE_UNUSED) {
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return true;
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}
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#if defined(__i386__) || defined(__x86_64__)
|
#if defined(__APPLE__)
|
#define ucontext __darwin_ucontext
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#if defined(__x86_64__)
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// 64 bit mac build.
|
#define CTX_EIP uc_mcontext->__ss.__rip
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#else
|
// 32 bit mac build.
|
#define CTX_EIP uc_mcontext->__ss.__eip
|
#endif
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#elif defined(__x86_64__)
|
// 64 bit linux build.
|
#define CTX_EIP uc_mcontext.gregs[REG_RIP]
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#else
|
// 32 bit linux build.
|
#define CTX_EIP uc_mcontext.gregs[REG_EIP]
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#endif
|
#endif
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static bool StandardSignalHandler(int sig, siginfo_t* info ATTRIBUTE_UNUSED,
|
void* context) {
|
if (sig == SIGSEGV) {
|
#if defined(__arm__)
|
struct ucontext *uc = reinterpret_cast<struct ucontext*>(context);
|
struct sigcontext *sc = reinterpret_cast<struct sigcontext*>(&uc->uc_mcontext);
|
sc->arm_pc += 2; // Skip instruction causing segv & sigill.
|
#elif defined(__aarch64__)
|
struct ucontext *uc = reinterpret_cast<struct ucontext*>(context);
|
struct sigcontext *sc = reinterpret_cast<struct sigcontext*>(&uc->uc_mcontext);
|
sc->pc += 4; // Skip instruction causing segv & sigill.
|
#elif defined(__i386__)
|
struct ucontext *uc = reinterpret_cast<struct ucontext*>(context);
|
uc->CTX_EIP += 3;
|
#elif defined(__x86_64__)
|
struct ucontext *uc = reinterpret_cast<struct ucontext*>(context);
|
uc->CTX_EIP += 2;
|
#else
|
UNUSED(context);
|
#endif
|
}
|
|
// We handled this...
|
return true;
|
}
|
|
// A dummy special handler, continueing after the faulting location. This code comes from
|
// 004-SignalTest.
|
static bool nb_signalhandler(int sig, siginfo_t* info, void* context) {
|
printf("NB signal handler with signal %d.\n", sig);
|
|
if (gSignalTestStatus.Get() == TestStatus::kNone) {
|
return StandardSignalHandler(sig, info, context);
|
} else if (sig == SIGSEGV) {
|
return NotReturnSignalHandler();
|
} else {
|
printf("ERROR: should not reach here!\n");
|
return false;
|
}
|
}
|
|
static ::android::NativeBridgeSignalHandlerFn native_bridge_getSignalHandler(int signal) {
|
// Test segv for already claimed signal, and sigill for not claimed signal
|
if ((signal == SIGSEGV) || (signal == SIGILL)) {
|
return &nb_signalhandler;
|
}
|
return nullptr;
|
}
|
|
extern "C" int native_bridge_unloadLibrary(void* handle ATTRIBUTE_UNUSED) {
|
printf("dlclose() in native bridge.\n");
|
return 0;
|
}
|
|
extern "C" const char* native_bridge_getError() {
|
printf("getError() in native bridge.\n");
|
return "";
|
}
|
|
extern "C" bool native_bridge_isPathSupported(const char* library_path ATTRIBUTE_UNUSED) {
|
printf("Checking for path support in native bridge.\n");
|
return false;
|
}
|
|
extern "C" bool native_bridge_initAnonymousNamespace(const char* public_ns_sonames ATTRIBUTE_UNUSED,
|
const char* anon_ns_library_path ATTRIBUTE_UNUSED) {
|
printf("Initializing anonymous namespace in native bridge.\n");
|
return false;
|
}
|
|
extern "C" android::native_bridge_namespace_t*
|
native_bridge_createNamespace(const char* name ATTRIBUTE_UNUSED,
|
const char* ld_library_path ATTRIBUTE_UNUSED,
|
const char* default_library_path ATTRIBUTE_UNUSED,
|
uint64_t type ATTRIBUTE_UNUSED,
|
const char* permitted_when_isolated_path ATTRIBUTE_UNUSED,
|
android::native_bridge_namespace_t* parent_ns ATTRIBUTE_UNUSED) {
|
printf("Creating namespace in native bridge.\n");
|
return nullptr;
|
}
|
|
extern "C" bool native_bridge_linkNamespaces(android::native_bridge_namespace_t* from ATTRIBUTE_UNUSED,
|
android::native_bridge_namespace_t* to ATTRIBUTE_UNUSED,
|
const char* shared_libs_sonames ATTRIBUTE_UNUSED) {
|
printf("Linking namespaces in native bridge.\n");
|
return false;
|
}
|
|
extern "C" void* native_bridge_loadLibraryExt(const char* libpath ATTRIBUTE_UNUSED,
|
int flag ATTRIBUTE_UNUSED,
|
android::native_bridge_namespace_t* ns ATTRIBUTE_UNUSED) {
|
printf("Loading library with Extension in native bridge.\n");
|
return nullptr;
|
}
|
|
// "NativeBridgeItf" is effectively an API (it is the name of the symbol that will be loaded
|
// by the native bridge library).
|
android::NativeBridgeCallbacks NativeBridgeItf {
|
// v1
|
.version = 3,
|
.initialize = &native_bridge_initialize,
|
.loadLibrary = &native_bridge_loadLibrary,
|
.getTrampoline = &native_bridge_getTrampoline,
|
.isSupported = &native_bridge_isSupported,
|
.getAppEnv = &native_bridge_getAppEnv,
|
// v2
|
.isCompatibleWith = &native_bridge_isCompatibleWith,
|
.getSignalHandler = &native_bridge_getSignalHandler,
|
// v3
|
.unloadLibrary = &native_bridge_unloadLibrary,
|
.getError = &native_bridge_getError,
|
.isPathSupported = &native_bridge_isPathSupported,
|
.initAnonymousNamespace = &native_bridge_initAnonymousNamespace,
|
.createNamespace = &native_bridge_createNamespace,
|
.linkNamespaces = &native_bridge_linkNamespaces,
|
.loadLibraryExt = &native_bridge_loadLibraryExt
|
};
|
