1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "art_method-inl.h"
#include "callee_save_frame.h"
#include "dex/code_item_accessors-inl.h"
#include "dex/dex_instruction-inl.h"
#include "common_throws.h"
#include "mirror/object-inl.h"
#include "nth_caller_visitor.h"
#include "thread.h"
#include "well_known_classes.h"
namespace art HIDDEN {
// Deliver an exception that's pending on thread helping set up a callee save frame on the way.
extern "C" NO_RETURN void artDeliverPendingExceptionFromCode(Thread* self)
REQUIRES_SHARED(Locks::mutator_lock_) {
ScopedQuickEntrypointChecks sqec(self);
self->QuickDeliverException();
}
extern "C" NO_RETURN uint64_t artInvokeObsoleteMethod(ArtMethod* method, Thread* self)
REQUIRES_SHARED(Locks::mutator_lock_) {
DCHECK(method->IsObsolete());
ScopedQuickEntrypointChecks sqec(self);
ThrowInternalError("Attempting to invoke obsolete version of '%s'.",
method->PrettyMethod().c_str());
self->QuickDeliverException();
}
// Called by generated code to throw an exception.
extern "C" NO_RETURN void artDeliverExceptionFromCode(mirror::Throwable* exception, Thread* self)
REQUIRES_SHARED(Locks::mutator_lock_) {
/*
* exception may be null, in which case this routine should
* throw NPE. NOTE: this is a convenience for generated code,
* which previously did the null check inline and constructed
* and threw a NPE if null. This routine responsible for setting
* exception_ in thread and delivering the exception.
*/
ScopedQuickEntrypointChecks sqec(self);
if (exception == nullptr) {
self->ThrowNewException("Ljava/lang/NullPointerException;", nullptr);
} else {
self->SetException(exception);
}
self->QuickDeliverException();
}
// Called by generated code to throw a NPE exception.
extern "C" NO_RETURN void artThrowNullPointerExceptionFromCode(Thread* self)
REQUIRES_SHARED(Locks::mutator_lock_) {
ScopedQuickEntrypointChecks sqec(self);
// We come from an explicit check in the generated code. This path is triggered
// only if the object is indeed null.
ThrowNullPointerExceptionFromDexPC(/* check_address= */ false, 0U);
self->QuickDeliverException();
}
// Installed by a signal handler to throw a NPE exception.
extern "C" NO_RETURN void artThrowNullPointerExceptionFromSignal(uintptr_t addr, Thread* self)
REQUIRES_SHARED(Locks::mutator_lock_) {
ScopedQuickEntrypointChecks sqec(self);
ThrowNullPointerExceptionFromDexPC(/* check_address= */ true, addr);
self->QuickDeliverException();
}
// Called by generated code to throw an arithmetic divide by zero exception.
extern "C" NO_RETURN void artThrowDivZeroFromCode(Thread* self)
REQUIRES_SHARED(Locks::mutator_lock_) {
ScopedQuickEntrypointChecks sqec(self);
ThrowArithmeticExceptionDivideByZero();
self->QuickDeliverException();
}
// Called by generated code to throw an array index out of bounds exception.
extern "C" NO_RETURN void artThrowArrayBoundsFromCode(int index, int length, Thread* self)
REQUIRES_SHARED(Locks::mutator_lock_) {
ScopedQuickEntrypointChecks sqec(self);
ThrowArrayIndexOutOfBoundsException(index, length);
self->QuickDeliverException();
}
// Called by generated code to throw a string index out of bounds exception.
extern "C" NO_RETURN void artThrowStringBoundsFromCode(int index, int length, Thread* self)
REQUIRES_SHARED(Locks::mutator_lock_) {
ScopedQuickEntrypointChecks sqec(self);
ThrowStringIndexOutOfBoundsException(index, length);
self->QuickDeliverException();
}
extern "C" NO_RETURN void artThrowStackOverflowFromCode(Thread* self)
REQUIRES_SHARED(Locks::mutator_lock_) {
ScopedQuickEntrypointChecks sqec(self);
ThrowStackOverflowError(self);
self->QuickDeliverException();
}
extern "C" NO_RETURN void artThrowClassCastException(mirror::Class* dest_type,
mirror::Class* src_type,
Thread* self)
REQUIRES_SHARED(Locks::mutator_lock_) {
ScopedQuickEntrypointChecks sqec(self);
if (dest_type == nullptr) {
// Find the target class for check cast using the bitstring check (dest_type == null).
NthCallerVisitor visitor(self, 0u);
visitor.WalkStack();
DCHECK(visitor.caller != nullptr);
uint32_t dex_pc = visitor.GetDexPc();
CodeItemDataAccessor accessor(*visitor.caller->GetDexFile(), visitor.caller->GetCodeItem());
const Instruction& check_cast = accessor.InstructionAt(dex_pc);
DCHECK_EQ(check_cast.Opcode(), Instruction::CHECK_CAST);
dex::TypeIndex type_index(check_cast.VRegB_21c());
ClassLinker* linker = Runtime::Current()->GetClassLinker();
dest_type = linker->LookupResolvedType(type_index, visitor.caller).Ptr();
CHECK(dest_type != nullptr) << "Target class should have been previously resolved: "
<< visitor.caller->GetDexFile()->PrettyType(type_index);
CHECK(!dest_type->IsAssignableFrom(src_type))
<< " " << std::hex << dest_type->PrettyDescriptor() << ";" << dest_type->Depth()
<< "/" << dest_type->GetField32(mirror::Class::StatusOffset())
<< " <: " << src_type->PrettyDescriptor() << ";" << src_type->Depth()
<< "/" << src_type->GetField32(mirror::Class::StatusOffset());
}
DCHECK(!dest_type->IsAssignableFrom(src_type));
ThrowClassCastException(dest_type, src_type);
self->QuickDeliverException();
}
extern "C" NO_RETURN void artThrowClassCastExceptionForObject(mirror::Object* obj,
mirror::Class* dest_type,
Thread* self)
REQUIRES_SHARED(Locks::mutator_lock_) {
DCHECK(obj != nullptr);
artThrowClassCastException(dest_type, obj->GetClass(), self);
}
extern "C" NO_RETURN void artThrowArrayStoreException(mirror::Object* array, mirror::Object* value,
Thread* self)
REQUIRES_SHARED(Locks::mutator_lock_) {
ScopedQuickEntrypointChecks sqec(self);
ThrowArrayStoreException(value->GetClass(), array->GetClass());
self->QuickDeliverException();
}
} // namespace art
|
