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 "arch/context.h"
18#include "art_method-inl.h"
19#include "jni.h"
20#include "oat_quick_method_header.h"
21#include "scoped_thread_state_change-inl.h"
22#include "stack.h"
23#include "thread.h"
24
25namespace art {
26
27namespace {
28
29class TestVisitor : public StackVisitor {
30 public:
31  TestVisitor(Thread* thread, Context* context, mirror::Object* this_value)
32      REQUIRES_SHARED(Locks::mutator_lock_)
33      : StackVisitor(thread, context, StackVisitor::StackWalkKind::kIncludeInlinedFrames),
34        this_value_(this_value),
35        found_method_index_(0) {}
36
37  bool VisitFrame() REQUIRES_SHARED(Locks::mutator_lock_) {
38    ArtMethod* m = GetMethod();
39    std::string m_name(m->GetName());
40
41    if (m_name.compare("testSimpleVReg") == 0) {
42      found_method_index_ = 1;
43      uint32_t value = 0;
44
45      CHECK(GetVReg(m, 0, kIntVReg, &value));
46      CHECK_EQ(value, 42u);
47
48      bool success = GetVReg(m, 1, kIntVReg, &value);
49      if (!IsShadowFrame() && GetCurrentOatQuickMethodHeader()->IsOptimized()) {
50        CHECK(!success);
51      }
52
53      success = GetVReg(m, 2, kIntVReg, &value);
54      if (!IsShadowFrame() && GetCurrentOatQuickMethodHeader()->IsOptimized()) {
55        CHECK(!success);
56      }
57
58      CHECK(GetVReg(m, 3, kReferenceVReg, &value));
59      CHECK_EQ(reinterpret_cast<mirror::Object*>(value), this_value_);
60
61      CHECK(GetVReg(m, 4, kIntVReg, &value));
62      CHECK_EQ(value, 1u);
63
64      CHECK(GetVReg(m, 5, kFloatVReg, &value));
65      uint32_t cast = bit_cast<uint32_t, float>(1.0f);
66      CHECK_EQ(value, cast);
67
68      CHECK(GetVReg(m, 6, kIntVReg, &value));
69      CHECK_EQ(value, 2u);
70
71      CHECK(GetVReg(m, 7, kIntVReg, &value));
72      CHECK_EQ(value, true);
73
74      CHECK(GetVReg(m, 8, kIntVReg, &value));
75      CHECK_EQ(value, 3u);
76
77      CHECK(GetVReg(m, 9, kIntVReg, &value));
78      CHECK_EQ(value, static_cast<uint32_t>('c'));
79    } else if (m_name.compare("testPairVReg") == 0) {
80      found_method_index_ = 2;
81      uint64_t value = 0;
82      CHECK(GetVRegPair(m, 0, kLongLoVReg, kLongHiVReg, &value));
83      CHECK_EQ(value, 42u);
84
85      bool success = GetVRegPair(m, 2, kLongLoVReg, kLongHiVReg, &value);
86      if (!IsShadowFrame() && GetCurrentOatQuickMethodHeader()->IsOptimized()) {
87        CHECK(!success);
88      }
89
90      success = GetVRegPair(m, 4, kLongLoVReg, kLongHiVReg, &value);
91      if (!IsShadowFrame() && GetCurrentOatQuickMethodHeader()->IsOptimized()) {
92        CHECK(!success);
93      }
94
95      uint32_t value32 = 0;
96      CHECK(GetVReg(m, 6, kReferenceVReg, &value32));
97      CHECK_EQ(reinterpret_cast<mirror::Object*>(value32), this_value_);
98
99      CHECK(GetVRegPair(m, 7, kLongLoVReg, kLongHiVReg, &value));
100      CHECK_EQ(static_cast<int64_t>(value), std::numeric_limits<int64_t>::min());
101
102      CHECK(GetVRegPair(m, 9, kLongLoVReg, kLongHiVReg, &value));
103      CHECK_EQ(static_cast<int64_t>(value), std::numeric_limits<int64_t>::max());
104
105      CHECK(GetVRegPair(m, 11, kLongLoVReg, kLongHiVReg, &value));
106      CHECK_EQ(value, 0u);
107
108      CHECK(GetVRegPair(m, 13, kDoubleLoVReg, kDoubleHiVReg, &value));
109      uint64_t cast = bit_cast<uint64_t, double>(2.0);
110      CHECK_EQ(value, cast);
111    }
112
113    return true;
114  }
115
116  mirror::Object* this_value_;
117
118  // Value returned to Java to ensure the methods testSimpleVReg and testPairVReg
119  // have been found and tested.
120  jint found_method_index_;
121};
122
123extern "C" JNIEXPORT jint JNICALL Java_Main_doNativeCall(JNIEnv*, jobject value) {
124  ScopedObjectAccess soa(Thread::Current());
125  std::unique_ptr<Context> context(Context::Create());
126  TestVisitor visitor(soa.Self(), context.get(), soa.Decode<mirror::Object>(value).Ptr());
127  visitor.WalkStack();
128  return visitor.found_method_index_;
129}
130
131}  // namespace
132
133}  // namespace art
134