1 /*
2  * Copyright (C) 2014 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_ARCH_X86_64_QUICK_METHOD_FRAME_INFO_X86_64_H_
18 #define ART_RUNTIME_ARCH_X86_64_QUICK_METHOD_FRAME_INFO_X86_64_H_
19 
20 #include "base/bit_utils.h"
21 #include "quick/quick_method_frame_info.h"
22 #include "registers_x86_64.h"
23 #include "runtime.h"  // for Runtime::CalleeSaveType.
24 
25 namespace art {
26 namespace x86_64 {
27 
28 static constexpr uint32_t kX86_64CalleeSaveRefSpills =
29     (1 << art::x86_64::RBX) | (1 << art::x86_64::RBP) | (1 << art::x86_64::R12) |
30     (1 << art::x86_64::R13) | (1 << art::x86_64::R14) | (1 << art::x86_64::R15);
31 static constexpr uint32_t kX86_64CalleeSaveArgSpills =
32     (1 << art::x86_64::RSI) | (1 << art::x86_64::RDX) | (1 << art::x86_64::RCX) |
33     (1 << art::x86_64::R8) | (1 << art::x86_64::R9);
34 static constexpr uint32_t kX86_64CalleeSaveFpArgSpills =
35     (1 << art::x86_64::XMM0) | (1 << art::x86_64::XMM1) | (1 << art::x86_64::XMM2) |
36     (1 << art::x86_64::XMM3) | (1 << art::x86_64::XMM4) | (1 << art::x86_64::XMM5) |
37     (1 << art::x86_64::XMM6) | (1 << art::x86_64::XMM7);
38 static constexpr uint32_t kX86_64CalleeSaveFpSpills =
39     (1 << art::x86_64::XMM12) | (1 << art::x86_64::XMM13) |
40     (1 << art::x86_64::XMM14) | (1 << art::x86_64::XMM15);
41 
X86_64CalleeSaveCoreSpills(Runtime::CalleeSaveType type)42 constexpr uint32_t X86_64CalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
43   return kX86_64CalleeSaveRefSpills |
44       (type == Runtime::kRefsAndArgs ? kX86_64CalleeSaveArgSpills : 0) |
45       (1 << art::x86_64::kNumberOfCpuRegisters);  // fake return address callee save;
46 }
47 
X86_64CalleeSaveFpSpills(Runtime::CalleeSaveType type)48 constexpr uint32_t X86_64CalleeSaveFpSpills(Runtime::CalleeSaveType type) {
49   return kX86_64CalleeSaveFpSpills |
50       (type == Runtime::kRefsAndArgs ? kX86_64CalleeSaveFpArgSpills : 0);
51 }
52 
X86_64CalleeSaveFrameSize(Runtime::CalleeSaveType type)53 constexpr uint32_t X86_64CalleeSaveFrameSize(Runtime::CalleeSaveType type) {
54   return RoundUp((POPCOUNT(X86_64CalleeSaveCoreSpills(type)) /* gprs */ +
55                   POPCOUNT(X86_64CalleeSaveFpSpills(type)) /* fprs */ +
56                   1 /* Method* */) * kX86_64PointerSize, kStackAlignment);
57 }
58 
X86_64CalleeSaveMethodFrameInfo(Runtime::CalleeSaveType type)59 constexpr QuickMethodFrameInfo X86_64CalleeSaveMethodFrameInfo(Runtime::CalleeSaveType type) {
60   return QuickMethodFrameInfo(X86_64CalleeSaveFrameSize(type),
61                               X86_64CalleeSaveCoreSpills(type),
62                               X86_64CalleeSaveFpSpills(type));
63 }
64 
65 }  // namespace x86_64
66 }  // namespace art
67 
68 #endif  // ART_RUNTIME_ARCH_X86_64_QUICK_METHOD_FRAME_INFO_X86_64_H_
69