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 "base/mutex.h"
21 #include "instruction_set.h"
22 #include "thread-inl.h"
23
24 // Specific frame size code is in architecture-specific files. We include this to compile-time
25 // specialize the code.
26 #include "arch/arm/quick_method_frame_info_arm.h"
27 #include "arch/arm64/quick_method_frame_info_arm64.h"
28 #include "arch/mips/quick_method_frame_info_mips.h"
29 #include "arch/x86/quick_method_frame_info_x86.h"
30 #include "arch/x86_64/quick_method_frame_info_x86_64.h"
31
32 namespace art {
33 namespace mirror {
34 class ArtMethod;
35 } // namespace mirror
36
37 // Place a special frame at the TOS that will save the callee saves for the given type.
FinishCalleeSaveFrameSetup(Thread * self,StackReference<mirror::ArtMethod> * sp,Runtime::CalleeSaveType type)38 static inline void FinishCalleeSaveFrameSetup(Thread* self, StackReference<mirror::ArtMethod>* sp,
39 Runtime::CalleeSaveType type)
40 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
41 // Be aware the store below may well stomp on an incoming argument.
42 Locks::mutator_lock_->AssertSharedHeld(self);
43 sp->Assign(Runtime::Current()->GetCalleeSaveMethod(type));
44 self->SetTopOfStack(sp, 0);
45 self->VerifyStack();
46 }
47
GetCalleeSaveFrameSize(InstructionSet isa,Runtime::CalleeSaveType type)48 static constexpr size_t GetCalleeSaveFrameSize(InstructionSet isa, Runtime::CalleeSaveType type) {
49 // constexpr must be a return statement.
50 return (isa == kArm || isa == kThumb2) ? arm::ArmCalleeSaveFrameSize(type) :
51 isa == kArm64 ? arm64::Arm64CalleeSaveFrameSize(type) :
52 isa == kMips ? mips::MipsCalleeSaveFrameSize(type) :
53 isa == kX86 ? x86::X86CalleeSaveFrameSize(type) :
54 isa == kX86_64 ? x86_64::X86_64CalleeSaveFrameSize(type) :
55 isa == kNone ? (LOG(FATAL) << "kNone has no frame size", 0) :
56 (LOG(FATAL) << "Unknown instruction set" << isa, 0);
57 }
58
59 // Note: this specialized statement is sanity-checked in the quick-trampoline gtest.
GetConstExprPointerSize(InstructionSet isa)60 static constexpr size_t GetConstExprPointerSize(InstructionSet isa) {
61 // constexpr must be a return statement.
62 return (isa == kArm || isa == kThumb2) ? kArmPointerSize :
63 isa == kArm64 ? kArm64PointerSize :
64 isa == kMips ? kMipsPointerSize :
65 isa == kX86 ? kX86PointerSize :
66 isa == kX86_64 ? kX86_64PointerSize :
67 isa == kNone ? (LOG(FATAL) << "kNone has no pointer size", 0) :
68 (LOG(FATAL) << "Unknown instruction set" << isa, 0);
69 }
70
71 // Note: this specialized statement is sanity-checked in the quick-trampoline gtest.
GetCalleeSavePCOffset(InstructionSet isa,Runtime::CalleeSaveType type)72 static constexpr size_t GetCalleeSavePCOffset(InstructionSet isa, Runtime::CalleeSaveType type) {
73 return GetCalleeSaveFrameSize(isa, type) - GetConstExprPointerSize(isa);
74 }
75
76 } // namespace art
77
78 #endif // ART_RUNTIME_ENTRYPOINTS_QUICK_CALLEE_SAVE_FRAME_H_
79