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Elliott Hughes2faa5f12012-01-30 14:42:07 -08001/*
2 * Copyright (C) 2011 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 */
Shih-wei Liao2fb97532011-08-11 16:17:23 -070016
Ian Rogers700a4022014-05-19 16:49:03 -070017#include <memory>
18
Vladimir Marko9d07e3d2016-03-31 12:02:28 +010019#include "base/arena_allocator.h"
Andreas Gampe542451c2016-07-26 09:02:02 -070020#include "base/enums.h"
Shih-wei Liao2fb97532011-08-11 16:17:23 -070021#include "class_linker.h"
Brian Carlstroma1ce1fe2014-02-24 23:23:58 -080022#include "common_runtime_test.h"
Shih-wei Liao2fb97532011-08-11 16:17:23 -070023#include "dex_file.h"
Elliott Hughes956af0f2014-12-11 14:34:28 -080024#include "dex_file-inl.h"
Elliott Hughes90a33692011-08-30 13:27:07 -070025#include "gtest/gtest.h"
Brian Carlstroma1ce1fe2014-02-24 23:23:58 -080026#include "leb128.h"
Ian Rogers4f6ad8a2013-03-18 15:27:28 -070027#include "mirror/class-inl.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080028#include "mirror/object_array-inl.h"
Ian Rogers04d7aa92013-03-16 14:29:17 -070029#include "mirror/object-inl.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080030#include "mirror/stack_trace_element.h"
Nicolas Geoffray524e7ea2015-10-16 17:13:34 +010031#include "oat_quick_method_header.h"
Vladimir Marko9d07e3d2016-03-31 12:02:28 +010032#include "optimizing/stack_map_stream.h"
Shih-wei Liao2fb97532011-08-11 16:17:23 -070033#include "runtime.h"
Ian Rogers00f7d0e2012-07-19 15:28:27 -070034#include "scoped_thread_state_change.h"
Mathieu Chartiereb8167a2014-05-07 15:43:14 -070035#include "handle_scope-inl.h"
Shih-wei Liao2fb97532011-08-11 16:17:23 -070036#include "thread.h"
Shih-wei Liao2fb97532011-08-11 16:17:23 -070037
38namespace art {
39
Brian Carlstroma1ce1fe2014-02-24 23:23:58 -080040class ExceptionTest : public CommonRuntimeTest {
Shih-wei Liao1a18c8c2011-08-14 17:47:36 -070041 protected:
42 virtual void SetUp() {
Brian Carlstroma1ce1fe2014-02-24 23:23:58 -080043 CommonRuntimeTest::SetUp();
Shih-wei Liao1a18c8c2011-08-14 17:47:36 -070044
Ian Rogers00f7d0e2012-07-19 15:28:27 -070045 ScopedObjectAccess soa(Thread::Current());
Mathieu Chartiereb8167a2014-05-07 15:43:14 -070046 StackHandleScope<2> hs(soa.Self());
47 Handle<mirror::ClassLoader> class_loader(
48 hs.NewHandle(soa.Decode<mirror::ClassLoader*>(LoadDex("ExceptionHandle"))));
Ian Rogers98379392014-02-24 16:53:16 -080049 my_klass_ = class_linker_->FindClass(soa.Self(), "LExceptionHandle;", class_loader);
Ian Rogers1d8cdbc2014-09-22 22:51:09 -070050 ASSERT_TRUE(my_klass_ != nullptr);
Mathieu Chartiereb8167a2014-05-07 15:43:14 -070051 Handle<mirror::Class> klass(hs.NewHandle(my_klass_));
Ian Rogers7b078e82014-09-10 14:44:24 -070052 class_linker_->EnsureInitialized(soa.Self(), klass, true, true);
Mathieu Chartiereb8167a2014-05-07 15:43:14 -070053 my_klass_ = klass.Get();
Brian Carlstrom33f741e2011-10-03 11:24:05 -070054
Ian Rogers4445a7e2012-10-05 17:19:13 -070055 dex_ = my_klass_->GetDexCache()->GetDexFile();
Brian Carlstrom33f741e2011-10-03 11:24:05 -070056
Brian Carlstromf8bbb842012-03-14 03:01:42 -070057 uint32_t code_size = 12;
Brian Carlstromf8bbb842012-03-14 03:01:42 -070058 for (size_t i = 0 ; i < code_size; i++) {
59 fake_code_.push_back(0x70 | i);
Brian Carlstrom3320cf42011-10-04 14:58:28 -070060 }
61
Vladimir Marko9d07e3d2016-03-31 12:02:28 +010062 ArenaPool pool;
63 ArenaAllocator allocator(&pool);
64 StackMapStream stack_maps(&allocator);
65 stack_maps.BeginStackMapEntry(/* dex_pc */ 3u,
66 /* native_pc_offset */ 3u,
67 /* register_mask */ 0u,
68 /* sp_mask */ nullptr,
69 /* num_dex_registers */ 0u,
70 /* inlining_depth */ 0u);
71 stack_maps.EndStackMapEntry();
72 size_t stack_maps_size = stack_maps.PrepareForFillIn();
73 size_t stack_maps_offset = stack_maps_size + sizeof(OatQuickMethodHeader);
Brian Carlstrom33f741e2011-10-03 11:24:05 -070074
Vladimir Marko9d07e3d2016-03-31 12:02:28 +010075 fake_header_code_and_maps_.resize(stack_maps_offset + fake_code_.size());
76 MemoryRegion stack_maps_region(&fake_header_code_and_maps_[0], stack_maps_size);
77 stack_maps.FillIn(stack_maps_region);
78 OatQuickMethodHeader method_header(stack_maps_offset, 4 * sizeof(void*), 0u, 0u, code_size);
79 memcpy(&fake_header_code_and_maps_[stack_maps_size], &method_header, sizeof(method_header));
80 std::copy(fake_code_.begin(),
81 fake_code_.end(),
82 fake_header_code_and_maps_.begin() + stack_maps_offset);
Vladimir Marko8a630572014-04-09 18:45:35 +010083
Vladimir Marko562ff442015-10-27 18:51:20 +000084 // Align the code.
85 const size_t alignment = GetInstructionSetAlignment(kRuntimeISA);
86 fake_header_code_and_maps_.reserve(fake_header_code_and_maps_.size() + alignment);
87 const void* unaligned_code_ptr =
88 fake_header_code_and_maps_.data() + (fake_header_code_and_maps_.size() - code_size);
89 size_t offset = dchecked_integral_cast<size_t>(reinterpret_cast<uintptr_t>(unaligned_code_ptr));
90 size_t padding = RoundUp(offset, alignment) - offset;
91 // Make sure no resizing takes place.
92 CHECK_GE(fake_header_code_and_maps_.capacity(), fake_header_code_and_maps_.size() + padding);
93 fake_header_code_and_maps_.insert(fake_header_code_and_maps_.begin(), padding, 0);
94 const void* code_ptr = reinterpret_cast<const uint8_t*>(unaligned_code_ptr) + padding;
95 CHECK_EQ(code_ptr,
96 static_cast<const void*>(fake_header_code_and_maps_.data() +
97 (fake_header_code_and_maps_.size() - code_size)));
98
99 if (kRuntimeISA == kArm) {
100 // Check that the Thumb2 adjustment will be a NOP, see EntryPointToCodePointer().
Vladimir Marko9d07e3d2016-03-31 12:02:28 +0100101 CHECK_ALIGNED(stack_maps_offset, 2);
Vladimir Marko562ff442015-10-27 18:51:20 +0000102 }
Vladimir Marko8a630572014-04-09 18:45:35 +0100103
Andreas Gampe542451c2016-07-26 09:02:02 -0700104 method_f_ = my_klass_->FindVirtualMethod("f", "()I", kRuntimePointerSize);
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700105 ASSERT_TRUE(method_f_ != nullptr);
Vladimir Marko8a630572014-04-09 18:45:35 +0100106 method_f_->SetEntryPointFromQuickCompiledCode(code_ptr);
Brian Carlstrom33f741e2011-10-03 11:24:05 -0700107
Andreas Gampe542451c2016-07-26 09:02:02 -0700108 method_g_ = my_klass_->FindVirtualMethod("g", "(I)V", kRuntimePointerSize);
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700109 ASSERT_TRUE(method_g_ != nullptr);
Vladimir Marko8a630572014-04-09 18:45:35 +0100110 method_g_->SetEntryPointFromQuickCompiledCode(code_ptr);
Shih-wei Liao1a18c8c2011-08-14 17:47:36 -0700111 }
112
Brian Carlstrom33f741e2011-10-03 11:24:05 -0700113 const DexFile* dex_;
Shih-wei Liao1a18c8c2011-08-14 17:47:36 -0700114
Brian Carlstrom3320cf42011-10-04 14:58:28 -0700115 std::vector<uint8_t> fake_code_;
Vladimir Marko8a630572014-04-09 18:45:35 +0100116 std::vector<uint8_t> fake_header_code_and_maps_;
Brian Carlstrom3320cf42011-10-04 14:58:28 -0700117
Mathieu Chartiere401d142015-04-22 13:56:20 -0700118 ArtMethod* method_f_;
119 ArtMethod* method_g_;
Shih-wei Liao1a18c8c2011-08-14 17:47:36 -0700120
121 private:
Ian Rogers2dd0e2c2013-01-24 12:42:14 -0800122 mirror::Class* my_klass_;
Shih-wei Liao2fb97532011-08-11 16:17:23 -0700123};
124
Shih-wei Liao1a18c8c2011-08-14 17:47:36 -0700125TEST_F(ExceptionTest, FindCatchHandler) {
Ian Rogersef7d42f2014-01-06 12:55:46 -0800126 ScopedObjectAccess soa(Thread::Current());
Brian Carlstrom33f741e2011-10-03 11:24:05 -0700127 const DexFile::CodeItem* code_item = dex_->GetCodeItem(method_f_->GetCodeItemOffset());
Shih-wei Liao2fb97532011-08-11 16:17:23 -0700128
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700129 ASSERT_TRUE(code_item != nullptr);
Shih-wei Liao2fb97532011-08-11 16:17:23 -0700130
131 ASSERT_EQ(2u, code_item->tries_size_);
Ian Rogersd81871c2011-10-03 13:57:23 -0700132 ASSERT_NE(0u, code_item->insns_size_in_code_units_);
Shih-wei Liao2fb97532011-08-11 16:17:23 -0700133
Elliott Hughes7b9d9962012-04-20 18:48:18 -0700134 const DexFile::TryItem *t0, *t1;
Ian Rogers0571d352011-11-03 19:51:38 -0700135 t0 = dex_->GetTryItems(*code_item, 0);
136 t1 = dex_->GetTryItems(*code_item, 1);
Shih-wei Liao2fb97532011-08-11 16:17:23 -0700137 EXPECT_LE(t0->start_addr_, t1->start_addr_);
Ian Rogers0571d352011-11-03 19:51:38 -0700138 {
139 CatchHandlerIterator iter(*code_item, 4 /* Dex PC in the first try block */);
140 EXPECT_STREQ("Ljava/io/IOException;", dex_->StringByTypeIdx(iter.GetHandlerTypeIndex()));
141 ASSERT_TRUE(iter.HasNext());
142 iter.Next();
143 EXPECT_STREQ("Ljava/lang/Exception;", dex_->StringByTypeIdx(iter.GetHandlerTypeIndex()));
144 ASSERT_TRUE(iter.HasNext());
145 iter.Next();
146 EXPECT_FALSE(iter.HasNext());
147 }
148 {
149 CatchHandlerIterator iter(*code_item, 8 /* Dex PC in the second try block */);
150 EXPECT_STREQ("Ljava/io/IOException;", dex_->StringByTypeIdx(iter.GetHandlerTypeIndex()));
151 ASSERT_TRUE(iter.HasNext());
152 iter.Next();
153 EXPECT_FALSE(iter.HasNext());
154 }
155 {
156 CatchHandlerIterator iter(*code_item, 11 /* Dex PC not in any try block */);
157 EXPECT_FALSE(iter.HasNext());
158 }
Shih-wei Liao2fb97532011-08-11 16:17:23 -0700159}
160
Shih-wei Liao55df06b2011-08-26 14:39:27 -0700161TEST_F(ExceptionTest, StackTraceElement) {
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700162 Thread* thread = Thread::Current();
Ian Rogers0fb6bb52012-08-14 15:10:19 -0700163 thread->TransitionFromSuspendedToRunnable();
Brian Carlstrombd86bcc2013-03-10 20:26:16 -0700164 bool started = runtime_->Start();
165 CHECK(started);
Ian Rogers00f7d0e2012-07-19 15:28:27 -0700166 JNIEnv* env = thread->GetJniEnv();
167 ScopedObjectAccess soa(env);
Brian Carlstrom25c33252011-09-18 15:58:35 -0700168
Elliott Hughes3b6baaa2011-10-14 19:13:56 -0700169 std::vector<uintptr_t> fake_stack;
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700170 Runtime* r = Runtime::Current();
171 r->SetInstructionSet(kRuntimeISA);
Mathieu Chartiere401d142015-04-22 13:56:20 -0700172 ArtMethod* save_method = r->CreateCalleeSaveMethod();
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700173 r->SetCalleeSaveMethod(save_method, Runtime::kSaveAll);
Nicolas Geoffray524e7ea2015-10-16 17:13:34 +0100174 QuickMethodFrameInfo frame_info = r->GetRuntimeMethodFrameInfo(save_method);
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700175
Brian Carlstromba150c32013-08-27 17:31:03 -0700176 ASSERT_EQ(kStackAlignment, 16U);
Andreas Gampecfa5c482014-03-12 14:11:40 -0700177 // ASSERT_EQ(sizeof(uintptr_t), sizeof(uint32_t));
Ian Rogers0cfe1fb2011-08-26 03:29:44 -0700178
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700179
Elliott Hughes956af0f2014-12-11 14:34:28 -0800180 // Create three fake stack frames with mapping data created in SetUp. We map offset 3 in the
181 // code to dex pc 3.
182 const uint32_t dex_pc = 3;
Ian Rogersf57c47c2011-10-06 00:06:17 -0700183
Elliott Hughes956af0f2014-12-11 14:34:28 -0800184 // Create the stack frame for the callee save method, expected by the runtime.
185 fake_stack.push_back(reinterpret_cast<uintptr_t>(save_method));
186 for (size_t i = 0; i < frame_info.FrameSizeInBytes() - 2 * sizeof(uintptr_t);
187 i += sizeof(uintptr_t)) {
Ian Rogersef7d42f2014-01-06 12:55:46 -0800188 fake_stack.push_back(0);
Ian Rogersef7d42f2014-01-06 12:55:46 -0800189 }
Shih-wei Liao55df06b2011-08-26 14:39:27 -0700190
Nicolas Geoffray524e7ea2015-10-16 17:13:34 +0100191 fake_stack.push_back(method_g_->GetOatQuickMethodHeader(0)->ToNativeQuickPc(
192 method_g_, dex_pc, /* is_catch_handler */ false)); // return pc
Elliott Hughes956af0f2014-12-11 14:34:28 -0800193
194 // Create/push fake 16byte stack frame for method g
195 fake_stack.push_back(reinterpret_cast<uintptr_t>(method_g_));
196 fake_stack.push_back(0);
197 fake_stack.push_back(0);
Nicolas Geoffray524e7ea2015-10-16 17:13:34 +0100198 fake_stack.push_back(method_g_->GetOatQuickMethodHeader(0)->ToNativeQuickPc(
199 method_g_, dex_pc, /* is_catch_handler */ false)); // return pc
Elliott Hughes956af0f2014-12-11 14:34:28 -0800200
201 // Create/push fake 16byte stack frame for method f
202 fake_stack.push_back(reinterpret_cast<uintptr_t>(method_f_));
203 fake_stack.push_back(0);
204 fake_stack.push_back(0);
205 fake_stack.push_back(0xEBAD6070); // return pc
206
Mathieu Chartier2cebb242015-04-21 16:50:40 -0700207 // Push Method* of null to terminate the trace
Elliott Hughes956af0f2014-12-11 14:34:28 -0800208 fake_stack.push_back(0);
209
210 // Push null values which will become null incoming arguments.
211 fake_stack.push_back(0);
212 fake_stack.push_back(0);
213 fake_stack.push_back(0);
214
215 // Set up thread to appear as if we called out of method_g_ at pc dex 3
Mathieu Chartiere401d142015-04-22 13:56:20 -0700216 thread->SetTopOfStack(reinterpret_cast<ArtMethod**>(&fake_stack[0]));
Elliott Hughes956af0f2014-12-11 14:34:28 -0800217
Sebastien Hertzee1d79a2014-02-21 15:46:30 +0100218 jobject internal = thread->CreateInternalStackTrace<false>(soa);
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700219 ASSERT_TRUE(internal != nullptr);
Ian Rogers53b8b092014-03-13 23:45:53 -0700220 jobjectArray ste_array = Thread::InternalStackTraceToStackTraceElementArray(soa, internal);
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700221 ASSERT_TRUE(ste_array != nullptr);
Mathieu Chartiere401d142015-04-22 13:56:20 -0700222 auto* trace_array = soa.Decode<mirror::ObjectArray<mirror::StackTraceElement>*>(ste_array);
Shih-wei Liao55df06b2011-08-26 14:39:27 -0700223
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700224 ASSERT_TRUE(trace_array != nullptr);
225 ASSERT_TRUE(trace_array->Get(0) != nullptr);
Brian Carlstrom33f741e2011-10-03 11:24:05 -0700226 EXPECT_STREQ("ExceptionHandle",
Shih-wei Liao44175362011-08-28 16:59:17 -0700227 trace_array->Get(0)->GetDeclaringClass()->ToModifiedUtf8().c_str());
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700228 EXPECT_STREQ("ExceptionHandle.java",
229 trace_array->Get(0)->GetFileName()->ToModifiedUtf8().c_str());
Shih-wei Liao55df06b2011-08-26 14:39:27 -0700230 EXPECT_STREQ("g", trace_array->Get(0)->GetMethodName()->ToModifiedUtf8().c_str());
Brian Carlstrom06ed7392012-01-31 01:25:48 -0800231 EXPECT_EQ(37, trace_array->Get(0)->GetLineNumber());
Shih-wei Liao55df06b2011-08-26 14:39:27 -0700232
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700233 ASSERT_TRUE(trace_array->Get(1) != nullptr);
Brian Carlstrom33f741e2011-10-03 11:24:05 -0700234 EXPECT_STREQ("ExceptionHandle",
Shih-wei Liao44175362011-08-28 16:59:17 -0700235 trace_array->Get(1)->GetDeclaringClass()->ToModifiedUtf8().c_str());
Ian Rogers1d8cdbc2014-09-22 22:51:09 -0700236 EXPECT_STREQ("ExceptionHandle.java",
237 trace_array->Get(1)->GetFileName()->ToModifiedUtf8().c_str());
Shih-wei Liao55df06b2011-08-26 14:39:27 -0700238 EXPECT_STREQ("f", trace_array->Get(1)->GetMethodName()->ToModifiedUtf8().c_str());
Brian Carlstrom06ed7392012-01-31 01:25:48 -0800239 EXPECT_EQ(22, trace_array->Get(1)->GetLineNumber());
Elliott Hughesa43e0932012-03-27 18:35:33 -0700240
Elliott Hughes956af0f2014-12-11 14:34:28 -0800241 thread->SetTopOfStack(nullptr); // Disarm the assertion that no code is running when we detach.
Shih-wei Liao55df06b2011-08-26 14:39:27 -0700242}
243
Shih-wei Liao2fb97532011-08-11 16:17:23 -0700244} // namespace art