1 /*
2 * Copyright (C) 2012 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 #ifndef ART_RUNTIME_ENTRYPOINTS_QUICK_CALLEE_SAVE_FRAME_H_
18 #define ART_RUNTIME_ENTRYPOINTS_QUICK_CALLEE_SAVE_FRAME_H_
19
20 #include "arch/instruction_set.h"
21 #include "base/mutex.h"
22 #include "runtime.h"
23 #include "thread-inl.h"
24
25 // Specific frame size code is in architecture-specific files. We include this to compile-time
26 // specialize the code.
27 #include "arch/arm/quick_method_frame_info_arm.h"
28 #include "arch/arm64/quick_method_frame_info_arm64.h"
29 #include "arch/mips/quick_method_frame_info_mips.h"
30 #include "arch/mips64/quick_method_frame_info_mips64.h"
31 #include "arch/x86/quick_method_frame_info_x86.h"
32 #include "arch/x86_64/quick_method_frame_info_x86_64.h"
33
34 namespace art {
35 class ArtMethod;
36
37 class ScopedQuickEntrypointChecks {
38 public:
ScopedQuickEntrypointChecks(Thread * self)39 explicit ScopedQuickEntrypointChecks(Thread *self) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)
40 : self_(self) {
41 if (kIsDebugBuild) {
42 TestsOnEntry();
43 }
44 }
45
ScopedQuickEntrypointChecks()46 explicit ScopedQuickEntrypointChecks() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)
47 : self_(kIsDebugBuild ? Thread::Current() : nullptr) {
48 if (kIsDebugBuild) {
49 TestsOnEntry();
50 }
51 }
52
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)53 ~ScopedQuickEntrypointChecks() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
54 if (kIsDebugBuild) {
55 TestsOnExit();
56 }
57 }
58
59 private:
TestsOnEntry()60 void TestsOnEntry() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
61 Locks::mutator_lock_->AssertSharedHeld(self_);
62 self_->VerifyStack();
63 }
64
TestsOnExit()65 void TestsOnExit() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
66 Locks::mutator_lock_->AssertSharedHeld(self_);
67 self_->VerifyStack();
68 }
69
70 Thread* const self_;
71 };
72
GetCalleeSaveFrameSize(InstructionSet isa,Runtime::CalleeSaveType type)73 static constexpr size_t GetCalleeSaveFrameSize(InstructionSet isa, Runtime::CalleeSaveType type) {
74 // constexpr must be a return statement.
75 return (isa == kArm || isa == kThumb2) ? arm::ArmCalleeSaveFrameSize(type) :
76 isa == kArm64 ? arm64::Arm64CalleeSaveFrameSize(type) :
77 isa == kMips ? mips::MipsCalleeSaveFrameSize(type) :
78 isa == kMips64 ? mips64::Mips64CalleeSaveFrameSize(type) :
79 isa == kX86 ? x86::X86CalleeSaveFrameSize(type) :
80 isa == kX86_64 ? x86_64::X86_64CalleeSaveFrameSize(type) :
81 isa == kNone ? (LOG(FATAL) << "kNone has no frame size", 0) :
82 (LOG(FATAL) << "Unknown instruction set" << isa, 0);
83 }
84
85 // Note: this specialized statement is sanity-checked in the quick-trampoline gtest.
GetConstExprPointerSize(InstructionSet isa)86 static constexpr size_t GetConstExprPointerSize(InstructionSet isa) {
87 // constexpr must be a return statement.
88 return (isa == kArm || isa == kThumb2) ? kArmPointerSize :
89 isa == kArm64 ? kArm64PointerSize :
90 isa == kMips ? kMipsPointerSize :
91 isa == kMips64 ? kMips64PointerSize :
92 isa == kX86 ? kX86PointerSize :
93 isa == kX86_64 ? kX86_64PointerSize :
94 isa == kNone ? (LOG(FATAL) << "kNone has no pointer size", 0) :
95 (LOG(FATAL) << "Unknown instruction set" << isa, 0);
96 }
97
98 // Note: this specialized statement is sanity-checked in the quick-trampoline gtest.
GetCalleeSaveReturnPcOffset(InstructionSet isa,Runtime::CalleeSaveType type)99 static constexpr size_t GetCalleeSaveReturnPcOffset(InstructionSet isa,
100 Runtime::CalleeSaveType type) {
101 return GetCalleeSaveFrameSize(isa, type) - GetConstExprPointerSize(isa);
102 }
103
104 } // namespace art
105
106 #endif // ART_RUNTIME_ENTRYPOINTS_QUICK_CALLEE_SAVE_FRAME_H_
107