quick_method_frame_info_arm.h revision b551fdcda9eb128c80de37c4fb978968bec6d4b3 
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_ARM_QUICK_METHOD_FRAME_INFO_ARM_H_
18#define ART_RUNTIME_ARCH_ARM_QUICK_METHOD_FRAME_INFO_ARM_H_
19
20#include "quick/quick_method_frame_info.h"
21#include "registers_arm.h"
22#include "runtime.h"  // for Runtime::CalleeSaveType.
23#include "utils.h"
24
25namespace art {
26namespace arm {
27
28static constexpr uint32_t kArmCalleeSaveRefSpills =
29    (1 << art::arm::R5) | (1 << art::arm::R6)  | (1 << art::arm::R7) | (1 << art::arm::R8) |
30    (1 << art::arm::R10) | (1 << art::arm::R11);
31static constexpr uint32_t kArmCalleeSaveArgSpills =
32    (1 << art::arm::R1) | (1 << art::arm::R2) | (1 << art::arm::R3);
33static constexpr uint32_t kArmCalleeSaveAllSpills =
34    (1 << art::arm::R4) | (1 << art::arm::R9);
35static constexpr uint32_t kArmCalleeSaveFpAllSpills =
36    (1 << art::arm::S0)  | (1 << art::arm::S1)  | (1 << art::arm::S2)  | (1 << art::arm::S3)  |
37    (1 << art::arm::S4)  | (1 << art::arm::S5)  | (1 << art::arm::S6)  | (1 << art::arm::S7)  |
38    (1 << art::arm::S8)  | (1 << art::arm::S9)  | (1 << art::arm::S10) | (1 << art::arm::S11) |
39    (1 << art::arm::S12) | (1 << art::arm::S13) | (1 << art::arm::S14) | (1 << art::arm::S15) |
40    (1 << art::arm::S16) | (1 << art::arm::S17) | (1 << art::arm::S18) | (1 << art::arm::S19) |
41    (1 << art::arm::S20) | (1 << art::arm::S21) | (1 << art::arm::S22) | (1 << art::arm::S23) |
42    (1 << art::arm::S24) | (1 << art::arm::S25) | (1 << art::arm::S26) | (1 << art::arm::S27) |
43    (1 << art::arm::S28) | (1 << art::arm::S29) | (1 << art::arm::S30) | (1 << art::arm::S31);
44
45constexpr uint32_t ArmCalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
46  return kArmCalleeSaveRefSpills | (type == Runtime::kRefsAndArgs ? kArmCalleeSaveArgSpills : 0) |
47      (type == Runtime::kSaveAll ? kArmCalleeSaveAllSpills : 0) | (1 << art::arm::LR);
48}
49
50constexpr uint32_t ArmCalleeSaveFpSpills(Runtime::CalleeSaveType type) {
51  return type == Runtime::kSaveAll ? kArmCalleeSaveFpAllSpills : 0;
52}
53
54constexpr uint32_t ArmCalleeSaveFrameSize(Runtime::CalleeSaveType type) {
55  return RoundUp((POPCOUNT(ArmCalleeSaveCoreSpills(type)) /* gprs */ +
56                  POPCOUNT(ArmCalleeSaveFpSpills(type)) /* fprs */ +
57                  1 /* Method* */) * kArmPointerSize, kStackAlignment);
58}
59
60constexpr QuickMethodFrameInfo ArmCalleeSaveMethodFrameInfo(Runtime::CalleeSaveType type) {
61  return QuickMethodFrameInfo(ArmCalleeSaveFrameSize(type),
62                              ArmCalleeSaveCoreSpills(type),
63                              ArmCalleeSaveFpSpills(type));
64}
65
66constexpr size_t ArmCalleeSaveFpr1Offset(Runtime::CalleeSaveType type) {
67  return ArmCalleeSaveFrameSize(type) -
68         (POPCOUNT(ArmCalleeSaveCoreSpills(type)) +
69          POPCOUNT(ArmCalleeSaveFpSpills(type))) * kArmPointerSize;
70}
71
72constexpr size_t ArmCalleeSaveGpr1Offset(Runtime::CalleeSaveType type) {
73  return ArmCalleeSaveFrameSize(type) -
74         POPCOUNT(ArmCalleeSaveCoreSpills(type)) * kArmPointerSize;
75}
76
77constexpr size_t ArmCalleeSaveLrOffset(Runtime::CalleeSaveType type) {
78  return ArmCalleeSaveFrameSize(type) -
79      POPCOUNT(ArmCalleeSaveCoreSpills(type) & (-(1 << LR))) * kArmPointerSize;
80}
81
82}  // namespace arm
83}  // namespace art
84
85#endif  // ART_RUNTIME_ARCH_ARM_QUICK_METHOD_FRAME_INFO_ARM_H_
86