1 /*
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 */
16
17 #include "dex_cache-inl.h"
18
19 #include "art_method-inl.h"
20 #include "base/logging.h"
21 #include "class_linker.h"
22 #include "gc/accounting/card_table-inl.h"
23 #include "gc/heap.h"
24 #include "globals.h"
25 #include "object.h"
26 #include "object-inl.h"
27 #include "object_array-inl.h"
28 #include "runtime.h"
29 #include "string.h"
30
31 namespace art {
32 namespace mirror {
33
Init(const DexFile * dex_file,String * location,GcRoot<String> * strings,uint32_t num_strings,GcRoot<Class> * resolved_types,uint32_t num_resolved_types,ArtMethod ** resolved_methods,uint32_t num_resolved_methods,ArtField ** resolved_fields,uint32_t num_resolved_fields,size_t pointer_size)34 void DexCache::Init(const DexFile* dex_file,
35 String* location,
36 GcRoot<String>* strings,
37 uint32_t num_strings,
38 GcRoot<Class>* resolved_types,
39 uint32_t num_resolved_types,
40 ArtMethod** resolved_methods,
41 uint32_t num_resolved_methods,
42 ArtField** resolved_fields,
43 uint32_t num_resolved_fields,
44 size_t pointer_size) {
45 CHECK(dex_file != nullptr);
46 CHECK(location != nullptr);
47 CHECK_EQ(num_strings != 0u, strings != nullptr);
48 CHECK_EQ(num_resolved_types != 0u, resolved_types != nullptr);
49 CHECK_EQ(num_resolved_methods != 0u, resolved_methods != nullptr);
50 CHECK_EQ(num_resolved_fields != 0u, resolved_fields != nullptr);
51
52 SetDexFile(dex_file);
53 SetLocation(location);
54 SetStrings(strings);
55 SetResolvedTypes(resolved_types);
56 SetResolvedMethods(resolved_methods);
57 SetResolvedFields(resolved_fields);
58 SetField32<false>(NumStringsOffset(), num_strings);
59 SetField32<false>(NumResolvedTypesOffset(), num_resolved_types);
60 SetField32<false>(NumResolvedMethodsOffset(), num_resolved_methods);
61 SetField32<false>(NumResolvedFieldsOffset(), num_resolved_fields);
62
63 Runtime* const runtime = Runtime::Current();
64 if (runtime->HasResolutionMethod()) {
65 // Initialize the resolve methods array to contain trampolines for resolution.
66 Fixup(runtime->GetResolutionMethod(), pointer_size);
67 }
68 }
69
Fixup(ArtMethod * trampoline,size_t pointer_size)70 void DexCache::Fixup(ArtMethod* trampoline, size_t pointer_size) {
71 // Fixup the resolve methods array to contain trampoline for resolution.
72 CHECK(trampoline != nullptr);
73 CHECK(trampoline->IsRuntimeMethod());
74 auto* resolved_methods = GetResolvedMethods();
75 for (size_t i = 0, length = NumResolvedMethods(); i < length; i++) {
76 if (GetElementPtrSize<ArtMethod*>(resolved_methods, i, pointer_size) == nullptr) {
77 SetElementPtrSize(resolved_methods, i, trampoline, pointer_size);
78 }
79 }
80 }
81
SetLocation(mirror::String * location)82 void DexCache::SetLocation(mirror::String* location) {
83 SetFieldObject<false>(OFFSET_OF_OBJECT_MEMBER(DexCache, location_), location);
84 }
85
86 } // namespace mirror
87 } // namespace art
88