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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "unstarted_runtime.h"
     18 
     19 #include <limits>
     20 #include <locale>
     21 
     22 #include "base/casts.h"
     23 #include "base/enums.h"
     24 #include "base/memory_tool.h"
     25 #include "class_linker.h"
     26 #include "common_runtime_test.h"
     27 #include "dex_instruction.h"
     28 #include "handle.h"
     29 #include "handle_scope-inl.h"
     30 #include "interpreter/interpreter_common.h"
     31 #include "mirror/class_loader.h"
     32 #include "mirror/object_array-inl.h"
     33 #include "mirror/object-inl.h"
     34 #include "mirror/string-inl.h"
     35 #include "runtime.h"
     36 #include "scoped_thread_state_change-inl.h"
     37 #include "thread.h"
     38 #include "transaction.h"
     39 
     40 namespace art {
     41 namespace interpreter {
     42 
     43 class UnstartedRuntimeTest : public CommonRuntimeTest {
     44  protected:
     45   // Re-expose all UnstartedRuntime implementations so we don't need to declare a million
     46   // test friends.
     47 
     48   // Methods that intercept available libcore implementations.
     49 #define UNSTARTED_DIRECT(Name, SigIgnored)                 \
     50   static void Unstarted ## Name(Thread* self,              \
     51                                 ShadowFrame* shadow_frame, \
     52                                 JValue* result,            \
     53                                 size_t arg_offset)         \
     54       REQUIRES_SHARED(Locks::mutator_lock_) {        \
     55     interpreter::UnstartedRuntime::Unstarted ## Name(self, shadow_frame, result, arg_offset); \
     56   }
     57 #include "unstarted_runtime_list.h"
     58   UNSTARTED_RUNTIME_DIRECT_LIST(UNSTARTED_DIRECT)
     59 #undef UNSTARTED_RUNTIME_DIRECT_LIST
     60 #undef UNSTARTED_RUNTIME_JNI_LIST
     61 #undef UNSTARTED_DIRECT
     62 
     63   // Methods that are native.
     64 #define UNSTARTED_JNI(Name, SigIgnored)                       \
     65   static void UnstartedJNI ## Name(Thread* self,              \
     66                                    ArtMethod* method,         \
     67                                    mirror::Object* receiver,  \
     68                                    uint32_t* args,            \
     69                                    JValue* result)            \
     70       REQUIRES_SHARED(Locks::mutator_lock_) {           \
     71     interpreter::UnstartedRuntime::UnstartedJNI ## Name(self, method, receiver, args, result); \
     72   }
     73 #include "unstarted_runtime_list.h"
     74   UNSTARTED_RUNTIME_JNI_LIST(UNSTARTED_JNI)
     75 #undef UNSTARTED_RUNTIME_DIRECT_LIST
     76 #undef UNSTARTED_RUNTIME_JNI_LIST
     77 #undef UNSTARTED_JNI
     78 
     79   // Helpers for ArrayCopy.
     80   //
     81   // Note: as we have to use handles, we use StackHandleScope to transfer data. Hardcode a size
     82   //       of three everywhere. That is enough to test all cases.
     83 
     84   static mirror::ObjectArray<mirror::Object>* CreateObjectArray(
     85       Thread* self,
     86       ObjPtr<mirror::Class> component_type,
     87       const StackHandleScope<3>& data)
     88       REQUIRES_SHARED(Locks::mutator_lock_) {
     89     Runtime* runtime = Runtime::Current();
     90     ObjPtr<mirror::Class> array_type =
     91         runtime->GetClassLinker()->FindArrayClass(self, &component_type);
     92     CHECK(array_type != nullptr);
     93     ObjPtr<mirror::ObjectArray<mirror::Object>> result =
     94         mirror::ObjectArray<mirror::Object>::Alloc(self, array_type, 3);
     95     CHECK(result != nullptr);
     96     for (size_t i = 0; i < 3; ++i) {
     97       result->Set(static_cast<int32_t>(i), data.GetReference(i));
     98       CHECK(!self->IsExceptionPending());
     99     }
    100     return result.Ptr();
    101   }
    102 
    103   static void CheckObjectArray(mirror::ObjectArray<mirror::Object>* array,
    104                                const StackHandleScope<3>& data)
    105       REQUIRES_SHARED(Locks::mutator_lock_) {
    106     CHECK_EQ(array->GetLength(), 3);
    107     CHECK_EQ(data.NumberOfReferences(), 3U);
    108     for (size_t i = 0; i < 3; ++i) {
    109       EXPECT_EQ(data.GetReference(i), array->Get(static_cast<int32_t>(i))) << i;
    110     }
    111   }
    112 
    113   void RunArrayCopy(Thread* self,
    114                     ShadowFrame* tmp,
    115                     bool expect_exception,
    116                     mirror::ObjectArray<mirror::Object>* src,
    117                     int32_t src_pos,
    118                     mirror::ObjectArray<mirror::Object>* dst,
    119                     int32_t dst_pos,
    120                     int32_t length)
    121       REQUIRES_SHARED(Locks::mutator_lock_) {
    122     JValue result;
    123     tmp->SetVRegReference(0, src);
    124     tmp->SetVReg(1, src_pos);
    125     tmp->SetVRegReference(2, dst);
    126     tmp->SetVReg(3, dst_pos);
    127     tmp->SetVReg(4, length);
    128     UnstartedSystemArraycopy(self, tmp, &result, 0);
    129     bool exception_pending = self->IsExceptionPending();
    130     EXPECT_EQ(exception_pending, expect_exception);
    131     if (exception_pending) {
    132       self->ClearException();
    133     }
    134   }
    135 
    136   void RunArrayCopy(Thread* self,
    137                     ShadowFrame* tmp,
    138                     bool expect_exception,
    139                     mirror::Class* src_component_class,
    140                     mirror::Class* dst_component_class,
    141                     const StackHandleScope<3>& src_data,
    142                     int32_t src_pos,
    143                     const StackHandleScope<3>& dst_data,
    144                     int32_t dst_pos,
    145                     int32_t length,
    146                     const StackHandleScope<3>& expected_result)
    147       REQUIRES_SHARED(Locks::mutator_lock_) {
    148     StackHandleScope<3> hs_misc(self);
    149     Handle<mirror::Class> dst_component_handle(hs_misc.NewHandle(dst_component_class));
    150 
    151     Handle<mirror::ObjectArray<mirror::Object>> src_handle(
    152         hs_misc.NewHandle(CreateObjectArray(self, src_component_class, src_data)));
    153 
    154     Handle<mirror::ObjectArray<mirror::Object>> dst_handle(
    155         hs_misc.NewHandle(CreateObjectArray(self, dst_component_handle.Get(), dst_data)));
    156 
    157     RunArrayCopy(self,
    158                  tmp,
    159                  expect_exception,
    160                  src_handle.Get(),
    161                  src_pos,
    162                  dst_handle.Get(),
    163                  dst_pos,
    164                  length);
    165     CheckObjectArray(dst_handle.Get(), expected_result);
    166   }
    167 
    168   void TestCeilFloor(bool ceil,
    169                      Thread* self,
    170                      ShadowFrame* tmp,
    171                      double const test_pairs[][2],
    172                      size_t num_pairs)
    173       REQUIRES_SHARED(Locks::mutator_lock_) {
    174     for (size_t i = 0; i < num_pairs; ++i) {
    175       tmp->SetVRegDouble(0, test_pairs[i][0]);
    176 
    177       JValue result;
    178       if (ceil) {
    179         UnstartedMathCeil(self, tmp, &result, 0);
    180       } else {
    181         UnstartedMathFloor(self, tmp, &result, 0);
    182       }
    183 
    184       ASSERT_FALSE(self->IsExceptionPending());
    185 
    186       // We want precise results.
    187       int64_t result_int64t = bit_cast<int64_t, double>(result.GetD());
    188       int64_t expect_int64t = bit_cast<int64_t, double>(test_pairs[i][1]);
    189       EXPECT_EQ(expect_int64t, result_int64t) << result.GetD() << " vs " << test_pairs[i][1];
    190     }
    191   }
    192 
    193   // Prepare for aborts. Aborts assume that the exception class is already resolved, as the
    194   // loading code doesn't work under transactions.
    195   void PrepareForAborts() REQUIRES_SHARED(Locks::mutator_lock_) {
    196     mirror::Object* result = Runtime::Current()->GetClassLinker()->FindClass(
    197         Thread::Current(),
    198         Transaction::kAbortExceptionSignature,
    199         ScopedNullHandle<mirror::ClassLoader>());
    200     CHECK(result != nullptr);
    201   }
    202 };
    203 
    204 TEST_F(UnstartedRuntimeTest, MemoryPeekByte) {
    205   Thread* self = Thread::Current();
    206 
    207   ScopedObjectAccess soa(self);
    208   constexpr const uint8_t base_array[] = "abcdefghijklmnop";
    209   constexpr int32_t kBaseLen = sizeof(base_array) / sizeof(uint8_t);
    210   const uint8_t* base_ptr = base_array;
    211 
    212   JValue result;
    213   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    214 
    215   for (int32_t i = 0; i < kBaseLen; ++i) {
    216     tmp->SetVRegLong(0, static_cast<int64_t>(reinterpret_cast<intptr_t>(base_ptr + i)));
    217 
    218     UnstartedMemoryPeekByte(self, tmp, &result, 0);
    219 
    220     EXPECT_EQ(result.GetB(), static_cast<int8_t>(base_array[i]));
    221   }
    222 
    223   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    224 }
    225 
    226 TEST_F(UnstartedRuntimeTest, MemoryPeekShort) {
    227   Thread* self = Thread::Current();
    228 
    229   ScopedObjectAccess soa(self);
    230   constexpr const uint8_t base_array[] = "abcdefghijklmnop";
    231   constexpr int32_t kBaseLen = sizeof(base_array) / sizeof(uint8_t);
    232   const uint8_t* base_ptr = base_array;
    233 
    234   JValue result;
    235   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    236 
    237   int32_t adjusted_length = kBaseLen - sizeof(int16_t);
    238   for (int32_t i = 0; i < adjusted_length; ++i) {
    239     tmp->SetVRegLong(0, static_cast<int64_t>(reinterpret_cast<intptr_t>(base_ptr + i)));
    240 
    241     UnstartedMemoryPeekShort(self, tmp, &result, 0);
    242 
    243     typedef int16_t unaligned_short __attribute__ ((aligned (1)));
    244     const unaligned_short* short_ptr = reinterpret_cast<const unaligned_short*>(base_ptr + i);
    245     EXPECT_EQ(result.GetS(), *short_ptr);
    246   }
    247 
    248   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    249 }
    250 
    251 TEST_F(UnstartedRuntimeTest, MemoryPeekInt) {
    252   Thread* self = Thread::Current();
    253 
    254   ScopedObjectAccess soa(self);
    255   constexpr const uint8_t base_array[] = "abcdefghijklmnop";
    256   constexpr int32_t kBaseLen = sizeof(base_array) / sizeof(uint8_t);
    257   const uint8_t* base_ptr = base_array;
    258 
    259   JValue result;
    260   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    261 
    262   int32_t adjusted_length = kBaseLen - sizeof(int32_t);
    263   for (int32_t i = 0; i < adjusted_length; ++i) {
    264     tmp->SetVRegLong(0, static_cast<int64_t>(reinterpret_cast<intptr_t>(base_ptr + i)));
    265 
    266     UnstartedMemoryPeekInt(self, tmp, &result, 0);
    267 
    268     typedef int32_t unaligned_int __attribute__ ((aligned (1)));
    269     const unaligned_int* int_ptr = reinterpret_cast<const unaligned_int*>(base_ptr + i);
    270     EXPECT_EQ(result.GetI(), *int_ptr);
    271   }
    272 
    273   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    274 }
    275 
    276 TEST_F(UnstartedRuntimeTest, MemoryPeekLong) {
    277   Thread* self = Thread::Current();
    278 
    279   ScopedObjectAccess soa(self);
    280   constexpr const uint8_t base_array[] = "abcdefghijklmnop";
    281   constexpr int32_t kBaseLen = sizeof(base_array) / sizeof(uint8_t);
    282   const uint8_t* base_ptr = base_array;
    283 
    284   JValue result;
    285   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    286 
    287   int32_t adjusted_length = kBaseLen - sizeof(int64_t);
    288   for (int32_t i = 0; i < adjusted_length; ++i) {
    289     tmp->SetVRegLong(0, static_cast<int64_t>(reinterpret_cast<intptr_t>(base_ptr + i)));
    290 
    291     UnstartedMemoryPeekLong(self, tmp, &result, 0);
    292 
    293     typedef int64_t unaligned_long __attribute__ ((aligned (1)));
    294     const unaligned_long* long_ptr = reinterpret_cast<const unaligned_long*>(base_ptr + i);
    295     EXPECT_EQ(result.GetJ(), *long_ptr);
    296   }
    297 
    298   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    299 }
    300 
    301 TEST_F(UnstartedRuntimeTest, StringGetCharsNoCheck) {
    302   Thread* self = Thread::Current();
    303 
    304   ScopedObjectAccess soa(self);
    305   StackHandleScope<2> hs(self);
    306   // TODO: Actual UTF.
    307   constexpr const char base_string[] = "abcdefghijklmnop";
    308   Handle<mirror::String> h_test_string(hs.NewHandle(
    309       mirror::String::AllocFromModifiedUtf8(self, base_string)));
    310   constexpr int32_t kBaseLen = sizeof(base_string) / sizeof(char) - 1;
    311   Handle<mirror::CharArray> h_char_array(hs.NewHandle(
    312       mirror::CharArray::Alloc(self, kBaseLen)));
    313   // A buffer so we can make sure we only modify the elements targetted.
    314   uint16_t buf[kBaseLen];
    315 
    316   JValue result;
    317   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    318 
    319   for (int32_t start_index = 0; start_index < kBaseLen; ++start_index) {
    320     for (int32_t count = 0; count <= kBaseLen; ++count) {
    321       for (int32_t trg_offset = 0; trg_offset < kBaseLen; ++trg_offset) {
    322         // Only do it when in bounds.
    323         if (start_index + count <= kBaseLen && trg_offset + count <= kBaseLen) {
    324           tmp->SetVRegReference(0, h_test_string.Get());
    325           tmp->SetVReg(1, start_index);
    326           tmp->SetVReg(2, count);
    327           tmp->SetVRegReference(3, h_char_array.Get());
    328           tmp->SetVReg(3, trg_offset);
    329 
    330           // Copy the char_array into buf.
    331           memcpy(buf, h_char_array->GetData(), kBaseLen * sizeof(uint16_t));
    332 
    333           UnstartedStringCharAt(self, tmp, &result, 0);
    334 
    335           uint16_t* data = h_char_array->GetData();
    336 
    337           bool success = true;
    338 
    339           // First segment should be unchanged.
    340           for (int32_t i = 0; i < trg_offset; ++i) {
    341             success = success && (data[i] == buf[i]);
    342           }
    343           // Second segment should be a copy.
    344           for (int32_t i = trg_offset; i < trg_offset + count; ++i) {
    345             success = success && (data[i] == buf[i - trg_offset + start_index]);
    346           }
    347           // Third segment should be unchanged.
    348           for (int32_t i = trg_offset + count; i < kBaseLen; ++i) {
    349             success = success && (data[i] == buf[i]);
    350           }
    351 
    352           EXPECT_TRUE(success);
    353         }
    354       }
    355     }
    356   }
    357 
    358   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    359 }
    360 
    361 TEST_F(UnstartedRuntimeTest, StringCharAt) {
    362   Thread* self = Thread::Current();
    363 
    364   ScopedObjectAccess soa(self);
    365   // TODO: Actual UTF.
    366   constexpr const char* base_string = "abcdefghijklmnop";
    367   int32_t base_len = static_cast<int32_t>(strlen(base_string));
    368   mirror::String* test_string = mirror::String::AllocFromModifiedUtf8(self, base_string);
    369 
    370   JValue result;
    371   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    372 
    373   for (int32_t i = 0; i < base_len; ++i) {
    374     tmp->SetVRegReference(0, test_string);
    375     tmp->SetVReg(1, i);
    376 
    377     UnstartedStringCharAt(self, tmp, &result, 0);
    378 
    379     EXPECT_EQ(result.GetI(), base_string[i]);
    380   }
    381 
    382   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    383 }
    384 
    385 TEST_F(UnstartedRuntimeTest, StringInit) {
    386   Thread* self = Thread::Current();
    387   ScopedObjectAccess soa(self);
    388   mirror::Class* klass = mirror::String::GetJavaLangString();
    389   ArtMethod* method = klass->FindDeclaredDirectMethod("<init>", "(Ljava/lang/String;)V",
    390                                                       kRuntimePointerSize);
    391 
    392   // create instruction data for invoke-direct {v0, v1} of method with fake index
    393   uint16_t inst_data[3] = { 0x2070, 0x0000, 0x0010 };
    394   const Instruction* inst = Instruction::At(inst_data);
    395 
    396   JValue result;
    397   ShadowFrame* shadow_frame = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, method, 0);
    398   const char* base_string = "hello_world";
    399   mirror::String* string_arg = mirror::String::AllocFromModifiedUtf8(self, base_string);
    400   mirror::String* reference_empty_string = mirror::String::AllocFromModifiedUtf8(self, "");
    401   shadow_frame->SetVRegReference(0, reference_empty_string);
    402   shadow_frame->SetVRegReference(1, string_arg);
    403 
    404   interpreter::DoCall<false, false>(method, self, *shadow_frame, inst, inst_data[0], &result);
    405   mirror::String* string_result = reinterpret_cast<mirror::String*>(result.GetL());
    406   EXPECT_EQ(string_arg->GetLength(), string_result->GetLength());
    407 
    408   if (string_arg->IsCompressed() && string_result->IsCompressed()) {
    409     EXPECT_EQ(memcmp(string_arg->GetValueCompressed(), string_result->GetValueCompressed(),
    410                      string_arg->GetLength() * sizeof(uint8_t)), 0);
    411   } else if (!string_arg->IsCompressed() && !string_result->IsCompressed()) {
    412     EXPECT_EQ(memcmp(string_arg->GetValue(), string_result->GetValue(),
    413                      string_arg->GetLength() * sizeof(uint16_t)), 0);
    414   } else {
    415     bool equal = true;
    416     for (int i = 0; i < string_arg->GetLength(); ++i) {
    417       if (string_arg->CharAt(i) != string_result->CharAt(i)) {
    418         equal = false;
    419         break;
    420       }
    421     }
    422     EXPECT_EQ(equal, true);
    423   }
    424 
    425   ShadowFrame::DeleteDeoptimizedFrame(shadow_frame);
    426 }
    427 
    428 // Tests the exceptions that should be checked before modifying the destination.
    429 // (Doesn't check the object vs primitive case ATM.)
    430 TEST_F(UnstartedRuntimeTest, SystemArrayCopyObjectArrayTestExceptions) {
    431   Thread* self = Thread::Current();
    432   ScopedObjectAccess soa(self);
    433   JValue result;
    434   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    435 
    436   // Note: all tests are not GC safe. Assume there's no GC running here with the few objects we
    437   //       allocate.
    438   StackHandleScope<2> hs_misc(self);
    439   Handle<mirror::Class> object_class(
    440       hs_misc.NewHandle(mirror::Class::GetJavaLangClass()->GetSuperClass()));
    441 
    442   StackHandleScope<3> hs_data(self);
    443   hs_data.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "1"));
    444   hs_data.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "2"));
    445   hs_data.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "3"));
    446 
    447   Handle<mirror::ObjectArray<mirror::Object>> array(
    448       hs_misc.NewHandle(CreateObjectArray(self, object_class.Get(), hs_data)));
    449 
    450   RunArrayCopy(self, tmp, true, array.Get(), -1, array.Get(), 0, 0);
    451   RunArrayCopy(self, tmp, true, array.Get(), 0, array.Get(), -1, 0);
    452   RunArrayCopy(self, tmp, true, array.Get(), 0, array.Get(), 0, -1);
    453   RunArrayCopy(self, tmp, true, array.Get(), 0, array.Get(), 0, 4);
    454   RunArrayCopy(self, tmp, true, array.Get(), 0, array.Get(), 1, 3);
    455   RunArrayCopy(self, tmp, true, array.Get(), 1, array.Get(), 0, 3);
    456 
    457   mirror::ObjectArray<mirror::Object>* class_as_array =
    458       reinterpret_cast<mirror::ObjectArray<mirror::Object>*>(object_class.Get());
    459   RunArrayCopy(self, tmp, true, class_as_array, 0, array.Get(), 0, 0);
    460   RunArrayCopy(self, tmp, true, array.Get(), 0, class_as_array, 0, 0);
    461 
    462   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    463 }
    464 
    465 TEST_F(UnstartedRuntimeTest, SystemArrayCopyObjectArrayTest) {
    466   Thread* self = Thread::Current();
    467   ScopedObjectAccess soa(self);
    468   JValue result;
    469   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    470 
    471   StackHandleScope<1> hs_object(self);
    472   Handle<mirror::Class> object_class(
    473       hs_object.NewHandle(mirror::Class::GetJavaLangClass()->GetSuperClass()));
    474 
    475   // Simple test:
    476   // [1,2,3]{1 @ 2} into [4,5,6] = [4,2,6]
    477   {
    478     StackHandleScope<3> hs_src(self);
    479     hs_src.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "1"));
    480     hs_src.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "2"));
    481     hs_src.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "3"));
    482 
    483     StackHandleScope<3> hs_dst(self);
    484     hs_dst.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "4"));
    485     hs_dst.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "5"));
    486     hs_dst.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "6"));
    487 
    488     StackHandleScope<3> hs_expected(self);
    489     hs_expected.NewHandle(hs_dst.GetReference(0));
    490     hs_expected.NewHandle(hs_dst.GetReference(1));
    491     hs_expected.NewHandle(hs_src.GetReference(1));
    492 
    493     RunArrayCopy(self,
    494                  tmp,
    495                  false,
    496                  object_class.Get(),
    497                  object_class.Get(),
    498                  hs_src,
    499                  1,
    500                  hs_dst,
    501                  2,
    502                  1,
    503                  hs_expected);
    504   }
    505 
    506   // Simple test:
    507   // [1,2,3]{1 @ 1} into [4,5,6] = [4,2,6]  (with dst String[])
    508   {
    509     StackHandleScope<3> hs_src(self);
    510     hs_src.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "1"));
    511     hs_src.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "2"));
    512     hs_src.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "3"));
    513 
    514     StackHandleScope<3> hs_dst(self);
    515     hs_dst.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "4"));
    516     hs_dst.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "5"));
    517     hs_dst.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "6"));
    518 
    519     StackHandleScope<3> hs_expected(self);
    520     hs_expected.NewHandle(hs_dst.GetReference(0));
    521     hs_expected.NewHandle(hs_src.GetReference(1));
    522     hs_expected.NewHandle(hs_dst.GetReference(2));
    523 
    524     RunArrayCopy(self,
    525                  tmp,
    526                  false,
    527                  object_class.Get(),
    528                  mirror::String::GetJavaLangString(),
    529                  hs_src,
    530                  1,
    531                  hs_dst,
    532                  1,
    533                  1,
    534                  hs_expected);
    535   }
    536 
    537   // Simple test:
    538   // [1,*,3] into [4,5,6] = [1,5,6] + exc
    539   {
    540     StackHandleScope<3> hs_src(self);
    541     hs_src.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "1"));
    542     hs_src.NewHandle(mirror::String::GetJavaLangString());
    543     hs_src.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "3"));
    544 
    545     StackHandleScope<3> hs_dst(self);
    546     hs_dst.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "4"));
    547     hs_dst.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "5"));
    548     hs_dst.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "6"));
    549 
    550     StackHandleScope<3> hs_expected(self);
    551     hs_expected.NewHandle(hs_src.GetReference(0));
    552     hs_expected.NewHandle(hs_dst.GetReference(1));
    553     hs_expected.NewHandle(hs_dst.GetReference(2));
    554 
    555     RunArrayCopy(self,
    556                  tmp,
    557                  true,
    558                  object_class.Get(),
    559                  mirror::String::GetJavaLangString(),
    560                  hs_src,
    561                  0,
    562                  hs_dst,
    563                  0,
    564                  3,
    565                  hs_expected);
    566   }
    567 
    568   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    569 }
    570 
    571 TEST_F(UnstartedRuntimeTest, IntegerParseIntTest) {
    572   Thread* self = Thread::Current();
    573   ScopedObjectAccess soa(self);
    574 
    575   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    576 
    577   // Test string. Should be valid, and between minimal values of LONG_MIN and LONG_MAX (for all
    578   // suffixes).
    579   constexpr const char* test_string = "-2147483646";
    580   constexpr int32_t test_values[] = {
    581                 6,
    582                46,
    583               646,
    584              3646,
    585             83646,
    586            483646,
    587           7483646,
    588          47483646,
    589         147483646,
    590        2147483646,
    591       -2147483646
    592   };
    593 
    594   static_assert(arraysize(test_values) == 11U, "test_values");
    595   CHECK_EQ(strlen(test_string), 11U);
    596 
    597   for (size_t i = 0; i <= 10; ++i) {
    598     const char* test_value = &test_string[10 - i];
    599 
    600     StackHandleScope<1> hs_str(self);
    601     Handle<mirror::String> h_str(
    602         hs_str.NewHandle(mirror::String::AllocFromModifiedUtf8(self, test_value)));
    603     ASSERT_NE(h_str.Get(), nullptr);
    604     ASSERT_FALSE(self->IsExceptionPending());
    605 
    606     tmp->SetVRegReference(0, h_str.Get());
    607 
    608     JValue result;
    609     UnstartedIntegerParseInt(self, tmp, &result, 0);
    610 
    611     ASSERT_FALSE(self->IsExceptionPending());
    612     EXPECT_EQ(result.GetI(), test_values[i]);
    613   }
    614 
    615   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    616 }
    617 
    618 // Right now the same as Integer.Parse
    619 TEST_F(UnstartedRuntimeTest, LongParseLongTest) {
    620   Thread* self = Thread::Current();
    621   ScopedObjectAccess soa(self);
    622 
    623   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    624 
    625   // Test string. Should be valid, and between minimal values of LONG_MIN and LONG_MAX (for all
    626   // suffixes).
    627   constexpr const char* test_string = "-2147483646";
    628   constexpr int64_t test_values[] = {
    629                 6,
    630                46,
    631               646,
    632              3646,
    633             83646,
    634            483646,
    635           7483646,
    636          47483646,
    637         147483646,
    638        2147483646,
    639       -2147483646
    640   };
    641 
    642   static_assert(arraysize(test_values) == 11U, "test_values");
    643   CHECK_EQ(strlen(test_string), 11U);
    644 
    645   for (size_t i = 0; i <= 10; ++i) {
    646     const char* test_value = &test_string[10 - i];
    647 
    648     StackHandleScope<1> hs_str(self);
    649     Handle<mirror::String> h_str(
    650         hs_str.NewHandle(mirror::String::AllocFromModifiedUtf8(self, test_value)));
    651     ASSERT_NE(h_str.Get(), nullptr);
    652     ASSERT_FALSE(self->IsExceptionPending());
    653 
    654     tmp->SetVRegReference(0, h_str.Get());
    655 
    656     JValue result;
    657     UnstartedLongParseLong(self, tmp, &result, 0);
    658 
    659     ASSERT_FALSE(self->IsExceptionPending());
    660     EXPECT_EQ(result.GetJ(), test_values[i]);
    661   }
    662 
    663   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    664 }
    665 
    666 TEST_F(UnstartedRuntimeTest, Ceil) {
    667   Thread* self = Thread::Current();
    668   ScopedObjectAccess soa(self);
    669 
    670   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    671 
    672   constexpr double nan = std::numeric_limits<double>::quiet_NaN();
    673   constexpr double inf = std::numeric_limits<double>::infinity();
    674   constexpr double ld1 = static_cast<double>((UINT64_C(1) << 53) - 1);
    675   constexpr double ld2 = static_cast<double>(UINT64_C(1) << 55);
    676   constexpr double test_pairs[][2] = {
    677       { -0.0, -0.0 },
    678       {  0.0,  0.0 },
    679       { -0.5, -0.0 },
    680       { -1.0, -1.0 },
    681       {  0.5,  1.0 },
    682       {  1.0,  1.0 },
    683       {  nan,  nan },
    684       {  inf,  inf },
    685       { -inf, -inf },
    686       {  ld1,  ld1 },
    687       {  ld2,  ld2 }
    688   };
    689 
    690   TestCeilFloor(true /* ceil */, self, tmp, test_pairs, arraysize(test_pairs));
    691 
    692   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    693 }
    694 
    695 TEST_F(UnstartedRuntimeTest, Floor) {
    696   Thread* self = Thread::Current();
    697   ScopedObjectAccess soa(self);
    698 
    699   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    700 
    701   constexpr double nan = std::numeric_limits<double>::quiet_NaN();
    702   constexpr double inf = std::numeric_limits<double>::infinity();
    703   constexpr double ld1 = static_cast<double>((UINT64_C(1) << 53) - 1);
    704   constexpr double ld2 = static_cast<double>(UINT64_C(1) << 55);
    705   constexpr double test_pairs[][2] = {
    706       { -0.0, -0.0 },
    707       {  0.0,  0.0 },
    708       { -0.5, -1.0 },
    709       { -1.0, -1.0 },
    710       {  0.5,  0.0 },
    711       {  1.0,  1.0 },
    712       {  nan,  nan },
    713       {  inf,  inf },
    714       { -inf, -inf },
    715       {  ld1,  ld1 },
    716       {  ld2,  ld2 }
    717   };
    718 
    719   TestCeilFloor(false /* floor */, self, tmp, test_pairs, arraysize(test_pairs));
    720 
    721   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    722 }
    723 
    724 TEST_F(UnstartedRuntimeTest, ToLowerUpper) {
    725   Thread* self = Thread::Current();
    726   ScopedObjectAccess soa(self);
    727 
    728   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    729 
    730   std::locale c_locale("C");
    731 
    732   // Check ASCII.
    733   for (uint32_t i = 0; i < 128; ++i) {
    734     bool c_upper = std::isupper(static_cast<char>(i), c_locale);
    735     bool c_lower = std::islower(static_cast<char>(i), c_locale);
    736     EXPECT_FALSE(c_upper && c_lower) << i;
    737 
    738     // Check toLowerCase.
    739     {
    740       JValue result;
    741       tmp->SetVReg(0, static_cast<int32_t>(i));
    742       UnstartedCharacterToLowerCase(self, tmp, &result, 0);
    743       ASSERT_FALSE(self->IsExceptionPending());
    744       uint32_t lower_result = static_cast<uint32_t>(result.GetI());
    745       if (c_lower) {
    746         EXPECT_EQ(i, lower_result);
    747       } else if (c_upper) {
    748         EXPECT_EQ(static_cast<uint32_t>(std::tolower(static_cast<char>(i), c_locale)),
    749                   lower_result);
    750       } else {
    751         EXPECT_EQ(i, lower_result);
    752       }
    753     }
    754 
    755     // Check toUpperCase.
    756     {
    757       JValue result2;
    758       tmp->SetVReg(0, static_cast<int32_t>(i));
    759       UnstartedCharacterToUpperCase(self, tmp, &result2, 0);
    760       ASSERT_FALSE(self->IsExceptionPending());
    761       uint32_t upper_result = static_cast<uint32_t>(result2.GetI());
    762       if (c_upper) {
    763         EXPECT_EQ(i, upper_result);
    764       } else if (c_lower) {
    765         EXPECT_EQ(static_cast<uint32_t>(std::toupper(static_cast<char>(i), c_locale)),
    766                   upper_result);
    767       } else {
    768         EXPECT_EQ(i, upper_result);
    769       }
    770     }
    771   }
    772 
    773   // Check abort for other things. Can't test all.
    774 
    775   PrepareForAborts();
    776 
    777   for (uint32_t i = 128; i < 256; ++i) {
    778     {
    779       JValue result;
    780       tmp->SetVReg(0, static_cast<int32_t>(i));
    781       Transaction transaction;
    782       Runtime::Current()->EnterTransactionMode(&transaction);
    783       UnstartedCharacterToLowerCase(self, tmp, &result, 0);
    784       Runtime::Current()->ExitTransactionMode();
    785       ASSERT_TRUE(self->IsExceptionPending());
    786       ASSERT_TRUE(transaction.IsAborted());
    787     }
    788     {
    789       JValue result;
    790       tmp->SetVReg(0, static_cast<int32_t>(i));
    791       Transaction transaction;
    792       Runtime::Current()->EnterTransactionMode(&transaction);
    793       UnstartedCharacterToUpperCase(self, tmp, &result, 0);
    794       Runtime::Current()->ExitTransactionMode();
    795       ASSERT_TRUE(self->IsExceptionPending());
    796       ASSERT_TRUE(transaction.IsAborted());
    797     }
    798   }
    799   for (uint64_t i = 256; i <= std::numeric_limits<uint32_t>::max(); i <<= 1) {
    800     {
    801       JValue result;
    802       tmp->SetVReg(0, static_cast<int32_t>(i));
    803       Transaction transaction;
    804       Runtime::Current()->EnterTransactionMode(&transaction);
    805       UnstartedCharacterToLowerCase(self, tmp, &result, 0);
    806       Runtime::Current()->ExitTransactionMode();
    807       ASSERT_TRUE(self->IsExceptionPending());
    808       ASSERT_TRUE(transaction.IsAborted());
    809     }
    810     {
    811       JValue result;
    812       tmp->SetVReg(0, static_cast<int32_t>(i));
    813       Transaction transaction;
    814       Runtime::Current()->EnterTransactionMode(&transaction);
    815       UnstartedCharacterToUpperCase(self, tmp, &result, 0);
    816       Runtime::Current()->ExitTransactionMode();
    817       ASSERT_TRUE(self->IsExceptionPending());
    818       ASSERT_TRUE(transaction.IsAborted());
    819     }
    820   }
    821 
    822   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    823 }
    824 
    825 TEST_F(UnstartedRuntimeTest, Sin) {
    826   Thread* self = Thread::Current();
    827   ScopedObjectAccess soa(self);
    828 
    829   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    830 
    831   // Test an important value, PI/6. That's the one we see in practice.
    832   constexpr uint64_t lvalue = UINT64_C(0x3fe0c152382d7365);
    833   tmp->SetVRegLong(0, static_cast<int64_t>(lvalue));
    834 
    835   JValue result;
    836   UnstartedMathSin(self, tmp, &result, 0);
    837 
    838   const uint64_t lresult = static_cast<uint64_t>(result.GetJ());
    839   EXPECT_EQ(UINT64_C(0x3fdfffffffffffff), lresult);
    840 
    841   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    842 }
    843 
    844 TEST_F(UnstartedRuntimeTest, Cos) {
    845   Thread* self = Thread::Current();
    846   ScopedObjectAccess soa(self);
    847 
    848   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    849 
    850   // Test an important value, PI/6. That's the one we see in practice.
    851   constexpr uint64_t lvalue = UINT64_C(0x3fe0c152382d7365);
    852   tmp->SetVRegLong(0, static_cast<int64_t>(lvalue));
    853 
    854   JValue result;
    855   UnstartedMathCos(self, tmp, &result, 0);
    856 
    857   const uint64_t lresult = static_cast<uint64_t>(result.GetJ());
    858   EXPECT_EQ(UINT64_C(0x3febb67ae8584cab), lresult);
    859 
    860   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    861 }
    862 
    863 TEST_F(UnstartedRuntimeTest, Pow) {
    864   // Valgrind seems to get this wrong, actually. Disable for valgrind.
    865   if (RUNNING_ON_MEMORY_TOOL != 0 && kMemoryToolIsValgrind) {
    866     return;
    867   }
    868 
    869   Thread* self = Thread::Current();
    870   ScopedObjectAccess soa(self);
    871 
    872   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    873 
    874   // Test an important pair.
    875   constexpr uint64_t lvalue1 = UINT64_C(0x4079000000000000);
    876   constexpr uint64_t lvalue2 = UINT64_C(0xbfe6db6dc0000000);
    877 
    878   tmp->SetVRegLong(0, static_cast<int64_t>(lvalue1));
    879   tmp->SetVRegLong(2, static_cast<int64_t>(lvalue2));
    880 
    881   JValue result;
    882   UnstartedMathPow(self, tmp, &result, 0);
    883 
    884   const uint64_t lresult = static_cast<uint64_t>(result.GetJ());
    885   EXPECT_EQ(UINT64_C(0x3f8c5c51326aa7ee), lresult);
    886 
    887   ShadowFrame::DeleteDeoptimizedFrame(tmp);
    888 }
    889 
    890 TEST_F(UnstartedRuntimeTest, IsAnonymousClass) {
    891   Thread* self = Thread::Current();
    892   ScopedObjectAccess soa(self);
    893 
    894   JValue result;
    895   ShadowFrame* shadow_frame = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    896 
    897   mirror::Class* class_klass = mirror::Class::GetJavaLangClass();
    898   shadow_frame->SetVRegReference(0, class_klass);
    899   UnstartedClassIsAnonymousClass(self, shadow_frame, &result, 0);
    900   EXPECT_EQ(result.GetZ(), 0);
    901 
    902   jobject class_loader = LoadDex("Nested");
    903   StackHandleScope<1> hs(soa.Self());
    904   Handle<mirror::ClassLoader> loader(
    905       hs.NewHandle(soa.Decode<mirror::ClassLoader>(class_loader)));
    906   mirror::Class* c = class_linker_->FindClass(soa.Self(), "LNested$1;", loader);
    907   ASSERT_TRUE(c != nullptr);
    908   shadow_frame->SetVRegReference(0, c);
    909   UnstartedClassIsAnonymousClass(self, shadow_frame, &result, 0);
    910   EXPECT_EQ(result.GetZ(), 1);
    911 
    912   ShadowFrame::DeleteDeoptimizedFrame(shadow_frame);
    913 }
    914 
    915 TEST_F(UnstartedRuntimeTest, GetDeclaringClass) {
    916   Thread* self = Thread::Current();
    917   ScopedObjectAccess soa(self);
    918 
    919   JValue result;
    920   ShadowFrame* shadow_frame = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    921 
    922   jobject class_loader = LoadDex("Nested");
    923   StackHandleScope<4> hs(self);
    924   Handle<mirror::ClassLoader> loader(
    925       hs.NewHandle(soa.Decode<mirror::ClassLoader>(class_loader)));
    926 
    927   Handle<mirror::Class> nested_klass(hs.NewHandle(
    928       class_linker_->FindClass(soa.Self(), "LNested;", loader)));
    929   Handle<mirror::Class> inner_klass(hs.NewHandle(
    930       class_linker_->FindClass(soa.Self(), "LNested$Inner;", loader)));
    931   Handle<mirror::Class> anon_klass(hs.NewHandle(
    932       class_linker_->FindClass(soa.Self(), "LNested$1;", loader)));
    933 
    934   shadow_frame->SetVRegReference(0, nested_klass.Get());
    935   UnstartedClassGetDeclaringClass(self, shadow_frame, &result, 0);
    936   EXPECT_EQ(result.GetL(), nullptr);
    937 
    938   shadow_frame->SetVRegReference(0, inner_klass.Get());
    939   UnstartedClassGetDeclaringClass(self, shadow_frame, &result, 0);
    940   EXPECT_EQ(result.GetL(), nested_klass.Get());
    941 
    942   shadow_frame->SetVRegReference(0, anon_klass.Get());
    943   UnstartedClassGetDeclaringClass(self, shadow_frame, &result, 0);
    944   EXPECT_EQ(result.GetL(), nullptr);
    945 
    946   ShadowFrame::DeleteDeoptimizedFrame(shadow_frame);
    947 }
    948 
    949 TEST_F(UnstartedRuntimeTest, ThreadLocalGet) {
    950   Thread* self = Thread::Current();
    951   ScopedObjectAccess soa(self);
    952 
    953   JValue result;
    954   ShadowFrame* shadow_frame = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
    955 
    956   StackHandleScope<1> hs(self);
    957   ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
    958 
    959   // Positive test. See that We get something for float conversion.
    960   {
    961     Handle<mirror::Class> floating_decimal = hs.NewHandle(
    962         class_linker->FindClass(self,
    963                                 "Lsun/misc/FloatingDecimal;",
    964                                 ScopedNullHandle<mirror::ClassLoader>()));
    965     ASSERT_TRUE(floating_decimal != nullptr);
    966     ASSERT_TRUE(class_linker->EnsureInitialized(self, floating_decimal, true, true));
    967 
    968     ArtMethod* caller_method = floating_decimal->FindDeclaredDirectMethod(
    969         "getBinaryToASCIIBuffer",
    970         "()Lsun/misc/FloatingDecimal$BinaryToASCIIBuffer;",
    971         class_linker->GetImagePointerSize());
    972     // floating_decimal->DumpClass(LOG_STREAM(ERROR), mirror::Class::kDumpClassFullDetail);
    973     ASSERT_TRUE(caller_method != nullptr);
    974     ShadowFrame* caller_frame = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, caller_method, 0);
    975     shadow_frame->SetLink(caller_frame);
    976 
    977     UnstartedThreadLocalGet(self, shadow_frame, &result, 0);
    978     EXPECT_TRUE(result.GetL() != nullptr);
    979     EXPECT_FALSE(self->IsExceptionPending());
    980 
    981     ShadowFrame::DeleteDeoptimizedFrame(caller_frame);
    982   }
    983 
    984   // Negative test.
    985   PrepareForAborts();
    986 
    987   {
    988     // Just use a method in Class.
    989     ObjPtr<mirror::Class> class_class = mirror::Class::GetJavaLangClass();
    990     ArtMethod* caller_method =
    991         &*class_class->GetDeclaredMethods(class_linker->GetImagePointerSize()).begin();
    992     ShadowFrame* caller_frame = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, caller_method, 0);
    993     shadow_frame->SetLink(caller_frame);
    994 
    995     Transaction transaction;
    996     Runtime::Current()->EnterTransactionMode(&transaction);
    997     UnstartedThreadLocalGet(self, shadow_frame, &result, 0);
    998     Runtime::Current()->ExitTransactionMode();
    999     ASSERT_TRUE(self->IsExceptionPending());
   1000     ASSERT_TRUE(transaction.IsAborted());
   1001     self->ClearException();
   1002 
   1003     ShadowFrame::DeleteDeoptimizedFrame(caller_frame);
   1004   }
   1005 
   1006   ShadowFrame::DeleteDeoptimizedFrame(shadow_frame);
   1007 }
   1008 
   1009 TEST_F(UnstartedRuntimeTest, FloatConversion) {
   1010   Thread* self = Thread::Current();
   1011   ScopedObjectAccess soa(self);
   1012 
   1013   StackHandleScope<1> hs(self);
   1014   ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
   1015   Handle<mirror::Class> double_class = hs.NewHandle(
   1016           class_linker->FindClass(self,
   1017                                   "Ljava/lang/Double;",
   1018                                   ScopedNullHandle<mirror::ClassLoader>()));
   1019   ASSERT_TRUE(double_class != nullptr);
   1020   ASSERT_TRUE(class_linker->EnsureInitialized(self, double_class, true, true));
   1021 
   1022   ArtMethod* method = double_class->FindDeclaredDirectMethod("toString",
   1023                                                              "(D)Ljava/lang/String;",
   1024                                                              class_linker->GetImagePointerSize());
   1025   ASSERT_TRUE(method != nullptr);
   1026 
   1027   // create instruction data for invoke-direct {v0, v1} of method with fake index
   1028   uint16_t inst_data[3] = { 0x2070, 0x0000, 0x0010 };
   1029   const Instruction* inst = Instruction::At(inst_data);
   1030 
   1031   JValue result;
   1032   ShadowFrame* shadow_frame = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, method, 0);
   1033   shadow_frame->SetVRegDouble(0, 1.23);
   1034   interpreter::DoCall<false, false>(method, self, *shadow_frame, inst, inst_data[0], &result);
   1035   ObjPtr<mirror::String> string_result = reinterpret_cast<mirror::String*>(result.GetL());
   1036   ASSERT_TRUE(string_result != nullptr);
   1037 
   1038   std::string mod_utf = string_result->ToModifiedUtf8();
   1039   EXPECT_EQ("1.23", mod_utf);
   1040 
   1041   ShadowFrame::DeleteDeoptimizedFrame(shadow_frame);
   1042 }
   1043 
   1044 TEST_F(UnstartedRuntimeTest, ThreadCurrentThread) {
   1045   Thread* self = Thread::Current();
   1046   ScopedObjectAccess soa(self);
   1047 
   1048   JValue result;
   1049   ShadowFrame* shadow_frame = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
   1050 
   1051   StackHandleScope<1> hs(self);
   1052   ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
   1053   Handle<mirror::Class> thread_class = hs.NewHandle(
   1054       class_linker->FindClass(self, "Ljava/lang/Thread;", ScopedNullHandle<mirror::ClassLoader>()));
   1055   ASSERT_TRUE(thread_class.Get() != nullptr);
   1056   ASSERT_TRUE(class_linker->EnsureInitialized(self, thread_class, true, true));
   1057 
   1058   // Negative test. In general, currentThread should fail (as we should not leak a peer that will
   1059   // be recreated at runtime).
   1060   PrepareForAborts();
   1061 
   1062   {
   1063     Transaction transaction;
   1064     Runtime::Current()->EnterTransactionMode(&transaction);
   1065     UnstartedThreadCurrentThread(self, shadow_frame, &result, 0);
   1066     Runtime::Current()->ExitTransactionMode();
   1067     ASSERT_TRUE(self->IsExceptionPending());
   1068     ASSERT_TRUE(transaction.IsAborted());
   1069     self->ClearException();
   1070   }
   1071 
   1072   ShadowFrame::DeleteDeoptimizedFrame(shadow_frame);
   1073 }
   1074 
   1075 TEST_F(UnstartedRuntimeTest, LogManager) {
   1076   Thread* self = Thread::Current();
   1077   ScopedObjectAccess soa(self);
   1078 
   1079   StackHandleScope<1> hs(self);
   1080   ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
   1081   Handle<mirror::Class> log_manager_class = hs.NewHandle(
   1082       class_linker->FindClass(self,
   1083                               "Ljava/util/logging/LogManager;",
   1084                               ScopedNullHandle<mirror::ClassLoader>()));
   1085   ASSERT_TRUE(log_manager_class.Get() != nullptr);
   1086   ASSERT_TRUE(class_linker->EnsureInitialized(self, log_manager_class, true, true));
   1087 }
   1088 
   1089 class UnstartedClassForNameTest : public UnstartedRuntimeTest {
   1090  public:
   1091   template <typename T>
   1092   void RunTest(T& runner, bool in_transaction, bool should_succeed) {
   1093     Thread* self = Thread::Current();
   1094     ScopedObjectAccess soa(self);
   1095 
   1096     // Ensure that Class is initialized.
   1097     {
   1098       ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
   1099       StackHandleScope<1> hs(self);
   1100       Handle<mirror::Class> h_class = hs.NewHandle(mirror::Class::GetJavaLangClass());
   1101       CHECK(class_linker->EnsureInitialized(self, h_class, true, true));
   1102     }
   1103 
   1104     // A selection of classes from different core classpath components.
   1105     constexpr const char* kTestCases[] = {
   1106         "java.net.CookieManager",  // From libcore.
   1107         "dalvik.system.ClassExt",  // From libart.
   1108     };
   1109 
   1110     if (in_transaction) {
   1111       // For transaction mode, we cannot load any classes, as the pre-fence initialization of
   1112       // classes isn't transactional. Load them ahead of time.
   1113       ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
   1114       for (const char* name : kTestCases) {
   1115         class_linker->FindClass(self,
   1116                                 DotToDescriptor(name).c_str(),
   1117                                 ScopedNullHandle<mirror::ClassLoader>());
   1118         CHECK(!self->IsExceptionPending()) << self->GetException()->Dump();
   1119       }
   1120     }
   1121 
   1122     if (!should_succeed) {
   1123       // Negative test. In general, currentThread should fail (as we should not leak a peer that will
   1124       // be recreated at runtime).
   1125       PrepareForAborts();
   1126     }
   1127 
   1128     JValue result;
   1129     ShadowFrame* shadow_frame = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
   1130 
   1131     for (const char* name : kTestCases) {
   1132       mirror::String* name_string = mirror::String::AllocFromModifiedUtf8(self, name);
   1133       CHECK(name_string != nullptr);
   1134 
   1135       Transaction transaction;
   1136       if (in_transaction) {
   1137         Runtime::Current()->EnterTransactionMode(&transaction);
   1138       }
   1139       CHECK(!self->IsExceptionPending());
   1140 
   1141       runner(self, shadow_frame, name_string, &result);
   1142 
   1143       if (in_transaction) {
   1144         Runtime::Current()->ExitTransactionMode();
   1145       }
   1146 
   1147       if (should_succeed) {
   1148         CHECK(!self->IsExceptionPending()) << name << " " << self->GetException()->Dump();
   1149         CHECK(result.GetL() != nullptr) << name;
   1150       } else {
   1151         CHECK(self->IsExceptionPending()) << name;
   1152         if (in_transaction) {
   1153           ASSERT_TRUE(transaction.IsAborted());
   1154         }
   1155         self->ClearException();
   1156       }
   1157     }
   1158 
   1159     ShadowFrame::DeleteDeoptimizedFrame(shadow_frame);
   1160   }
   1161 
   1162   mirror::ClassLoader* GetBootClassLoader() REQUIRES_SHARED(Locks::mutator_lock_) {
   1163     Thread* self = Thread::Current();
   1164     StackHandleScope<2> hs(self);
   1165     MutableHandle<mirror::ClassLoader> boot_cp = hs.NewHandle<mirror::ClassLoader>(nullptr);
   1166 
   1167     {
   1168       ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
   1169 
   1170       // Create the fake boot classloader. Any instance is fine, they are technically interchangeable.
   1171       Handle<mirror::Class> boot_cp_class = hs.NewHandle(
   1172           class_linker->FindClass(self,
   1173                                   "Ljava/lang/BootClassLoader;",
   1174                                   ScopedNullHandle<mirror::ClassLoader>()));
   1175       CHECK(boot_cp_class != nullptr);
   1176       CHECK(class_linker->EnsureInitialized(self, boot_cp_class, true, true));
   1177 
   1178       boot_cp.Assign(boot_cp_class->AllocObject(self)->AsClassLoader());
   1179       CHECK(boot_cp != nullptr);
   1180 
   1181       ArtMethod* boot_cp_init = boot_cp_class->FindDeclaredDirectMethod(
   1182           "<init>", "()V", class_linker->GetImagePointerSize());
   1183       CHECK(boot_cp_init != nullptr);
   1184 
   1185       JValue result;
   1186       ShadowFrame* shadow_frame = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, boot_cp_init, 0);
   1187       shadow_frame->SetVRegReference(0, boot_cp.Get());
   1188 
   1189       // create instruction data for invoke-direct {v0} of method with fake index
   1190       uint16_t inst_data[3] = { 0x1070, 0x0000, 0x0010 };
   1191       const Instruction* inst = Instruction::At(inst_data);
   1192 
   1193       interpreter::DoCall<false, false>(boot_cp_init,
   1194                                         self,
   1195                                         *shadow_frame,
   1196                                         inst,
   1197                                         inst_data[0],
   1198                                         &result);
   1199       CHECK(!self->IsExceptionPending());
   1200 
   1201       ShadowFrame::DeleteDeoptimizedFrame(shadow_frame);
   1202     }
   1203 
   1204     return boot_cp.Get();
   1205   }
   1206 };
   1207 
   1208 TEST_F(UnstartedClassForNameTest, ClassForName) {
   1209   auto runner = [](Thread* self, ShadowFrame* shadow_frame, mirror::String* name, JValue* result)
   1210       REQUIRES_SHARED(Locks::mutator_lock_) {
   1211     shadow_frame->SetVRegReference(0, name);
   1212     UnstartedClassForName(self, shadow_frame, result, 0);
   1213   };
   1214   RunTest(runner, false, true);
   1215 }
   1216 
   1217 TEST_F(UnstartedClassForNameTest, ClassForNameLong) {
   1218   auto runner = [](Thread* self, ShadowFrame* shadow_frame, mirror::String* name, JValue* result)
   1219             REQUIRES_SHARED(Locks::mutator_lock_) {
   1220     shadow_frame->SetVRegReference(0, name);
   1221     shadow_frame->SetVReg(1, 0);
   1222     shadow_frame->SetVRegReference(2, nullptr);
   1223     UnstartedClassForNameLong(self, shadow_frame, result, 0);
   1224   };
   1225   RunTest(runner, false, true);
   1226 }
   1227 
   1228 TEST_F(UnstartedClassForNameTest, ClassForNameLongWithClassLoader) {
   1229   Thread* self = Thread::Current();
   1230   ScopedObjectAccess soa(self);
   1231 
   1232   StackHandleScope<1> hs(self);
   1233   Handle<mirror::ClassLoader> boot_cp = hs.NewHandle(GetBootClassLoader());
   1234 
   1235   auto runner = [&](Thread* th, ShadowFrame* shadow_frame, mirror::String* name, JValue* result)
   1236       REQUIRES_SHARED(Locks::mutator_lock_) {
   1237     shadow_frame->SetVRegReference(0, name);
   1238     shadow_frame->SetVReg(1, 0);
   1239     shadow_frame->SetVRegReference(2, boot_cp.Get());
   1240     UnstartedClassForNameLong(th, shadow_frame, result, 0);
   1241   };
   1242   RunTest(runner, false, true);
   1243 }
   1244 
   1245 TEST_F(UnstartedClassForNameTest, ClassForNameLongWithClassLoaderTransaction) {
   1246   Thread* self = Thread::Current();
   1247   ScopedObjectAccess soa(self);
   1248 
   1249   StackHandleScope<1> hs(self);
   1250   Handle<mirror::ClassLoader> boot_cp = hs.NewHandle(GetBootClassLoader());
   1251 
   1252   auto runner = [&](Thread* th, ShadowFrame* shadow_frame, mirror::String* name, JValue* result)
   1253       REQUIRES_SHARED(Locks::mutator_lock_) {
   1254     shadow_frame->SetVRegReference(0, name);
   1255     shadow_frame->SetVReg(1, 0);
   1256     shadow_frame->SetVRegReference(2, boot_cp.Get());
   1257     UnstartedClassForNameLong(th, shadow_frame, result, 0);
   1258   };
   1259   RunTest(runner, true, true);
   1260 }
   1261 
   1262 TEST_F(UnstartedClassForNameTest, ClassForNameLongWithClassLoaderFail) {
   1263   Thread* self = Thread::Current();
   1264   ScopedObjectAccess soa(self);
   1265 
   1266   StackHandleScope<2> hs(self);
   1267   ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
   1268   jobject path_jobj = class_linker->CreatePathClassLoader(self, {});
   1269   ASSERT_TRUE(path_jobj != nullptr);
   1270   Handle<mirror::ClassLoader> path_cp = hs.NewHandle<mirror::ClassLoader>(
   1271       self->DecodeJObject(path_jobj)->AsClassLoader());
   1272 
   1273   auto runner = [&](Thread* th, ShadowFrame* shadow_frame, mirror::String* name, JValue* result)
   1274       REQUIRES_SHARED(Locks::mutator_lock_) {
   1275     shadow_frame->SetVRegReference(0, name);
   1276     shadow_frame->SetVReg(1, 0);
   1277     shadow_frame->SetVRegReference(2, path_cp.Get());
   1278     UnstartedClassForNameLong(th, shadow_frame, result, 0);
   1279   };
   1280   RunTest(runner, true, false);
   1281 }
   1282 
   1283 TEST_F(UnstartedRuntimeTest, ClassGetSignatureAnnotation) {
   1284   Thread* self = Thread::Current();
   1285   ScopedObjectAccess soa(self);
   1286 
   1287   StackHandleScope<1> hs(self);
   1288   ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
   1289   Handle<mirror::Class> list_class = hs.NewHandle(
   1290       class_linker->FindClass(self,
   1291                               "Ljava/util/List;",
   1292                               ScopedNullHandle<mirror::ClassLoader>()));
   1293   ASSERT_TRUE(list_class.Get() != nullptr);
   1294   ASSERT_TRUE(class_linker->EnsureInitialized(self, list_class, true, true));
   1295 
   1296   JValue result;
   1297   ShadowFrame* shadow_frame = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
   1298 
   1299   shadow_frame->SetVRegReference(0, list_class.Get());
   1300   UnstartedClassGetSignatureAnnotation(self, shadow_frame, &result, 0);
   1301   ASSERT_TRUE(result.GetL() != nullptr);
   1302   ASSERT_FALSE(self->IsExceptionPending());
   1303 
   1304   ShadowFrame::DeleteDeoptimizedFrame(shadow_frame);
   1305 
   1306   ASSERT_TRUE(result.GetL()->IsObjectArray());
   1307   ObjPtr<mirror::ObjectArray<mirror::Object>> array =
   1308       result.GetL()->AsObjectArray<mirror::Object>();
   1309   std::ostringstream oss;
   1310   for (int32_t i = 0; i != array->GetLength(); ++i) {
   1311     ObjPtr<mirror::Object> elem = array->Get(i);
   1312     ASSERT_TRUE(elem != nullptr);
   1313     ASSERT_TRUE(elem->IsString());
   1314     oss << elem->AsString()->ToModifiedUtf8();
   1315   }
   1316   std::string output_string = oss.str();
   1317   ASSERT_EQ(output_string, "<E:Ljava/lang/Object;>Ljava/lang/Object;Ljava/util/Collection<TE;>;");
   1318 }
   1319 
   1320 TEST_F(UnstartedRuntimeTest, ConstructorNewInstance0) {
   1321   Thread* self = Thread::Current();
   1322   ScopedObjectAccess soa(self);
   1323 
   1324   StackHandleScope<4> hs(self);
   1325   ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
   1326 
   1327   // Get Throwable.
   1328   Handle<mirror::Class> throw_class = hs.NewHandle(mirror::Throwable::GetJavaLangThrowable());
   1329   ASSERT_TRUE(class_linker->EnsureInitialized(self, throw_class, true, true));
   1330 
   1331   // Get an input object.
   1332   Handle<mirror::String> input = hs.NewHandle(mirror::String::AllocFromModifiedUtf8(self, "abd"));
   1333 
   1334   // Find the constructor.
   1335   ArtMethod* throw_cons = throw_class->FindDeclaredDirectMethod(
   1336       "<init>", "(Ljava/lang/String;)V", class_linker->GetImagePointerSize());
   1337   ASSERT_TRUE(throw_cons != nullptr);
   1338 
   1339   Handle<mirror::Constructor> cons = hs.NewHandle(
   1340       mirror::Constructor::CreateFromArtMethod<kRuntimePointerSize, false>(self, throw_cons));
   1341   ASSERT_TRUE(cons != nullptr);
   1342 
   1343   Handle<mirror::ObjectArray<mirror::Object>> args = hs.NewHandle(
   1344       mirror::ObjectArray<mirror::Object>::Alloc(
   1345           self, class_linker_->GetClassRoot(ClassLinker::ClassRoot::kObjectArrayClass), 1));
   1346   ASSERT_TRUE(args != nullptr);
   1347   args->Set(0, input.Get());
   1348 
   1349   // OK, we're ready now.
   1350   JValue result;
   1351   ShadowFrame* shadow_frame = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
   1352   shadow_frame->SetVRegReference(0, cons.Get());
   1353   shadow_frame->SetVRegReference(1, args.Get());
   1354   UnstartedConstructorNewInstance0(self, shadow_frame, &result, 0);
   1355 
   1356   ASSERT_TRUE(result.GetL() != nullptr);
   1357   ASSERT_FALSE(self->IsExceptionPending());
   1358 
   1359   // Should be a new object.
   1360   ASSERT_NE(result.GetL(), input.Get());
   1361   // Should be a String.
   1362   ASSERT_EQ(mirror::Throwable::GetJavaLangThrowable(), result.GetL()->GetClass());
   1363   // Should have the right string.
   1364   ObjPtr<mirror::String> result_msg =
   1365       reinterpret_cast<mirror::Throwable*>(result.GetL())->GetDetailMessage();
   1366   EXPECT_EQ(input.Get(), result_msg.Ptr());
   1367 
   1368   ShadowFrame::DeleteDeoptimizedFrame(shadow_frame);
   1369 }
   1370 
   1371 TEST_F(UnstartedRuntimeTest, IdentityHashCode) {
   1372   Thread* self = Thread::Current();
   1373   ScopedObjectAccess soa(self);
   1374   ShadowFrame* tmp = ShadowFrame::CreateDeoptimizedFrame(10, nullptr, nullptr, 0);
   1375 
   1376   JValue result;
   1377   UnstartedSystemIdentityHashCode(self, tmp, &result, 0);
   1378 
   1379   EXPECT_EQ(0, result.GetI());
   1380   ASSERT_FALSE(self->IsExceptionPending());
   1381 
   1382   ObjPtr<mirror::String> str = mirror::String::AllocFromModifiedUtf8(self, "abd");
   1383   tmp->SetVRegReference(0, str.Ptr());
   1384   UnstartedSystemIdentityHashCode(self, tmp, &result, 0);
   1385   EXPECT_NE(0, result.GetI());
   1386   EXPECT_EQ(str->IdentityHashCode(), result.GetI());
   1387   ASSERT_FALSE(self->IsExceptionPending());
   1388 
   1389   ShadowFrame::DeleteDeoptimizedFrame(tmp);
   1390 }
   1391 
   1392 }  // namespace interpreter
   1393 }  // namespace art
   1394