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_ARM64_QUICK_METHOD_FRAME_INFO_ARM64_H_ 18 #define ART_RUNTIME_ARCH_ARM64_QUICK_METHOD_FRAME_INFO_ARM64_H_ 19 20 #include "arch/instruction_set.h" 21 #include "base/bit_utils.h" 22 #include "base/callee_save_type.h" 23 #include "base/enums.h" 24 #include "globals.h" 25 #include "quick/quick_method_frame_info.h" 26 #include "registers_arm64.h" 27 28 namespace art { 29 namespace arm64 { 30 31 // Registers need to be restored but not preserved by aapcs64. 32 static constexpr uint32_t kArm64CalleeSaveAlwaysSpills = 33 // Note: ArtMethod::GetReturnPcOffsetInBytes() rely on the assumption that 34 // LR is always saved on the top of the frame for all targets. 35 // That is, lr = *(sp + framesize - pointer_size). 36 (1 << art::arm64::LR); 37 // Callee saved registers 38 static constexpr uint32_t kArm64CalleeSaveRefSpills = 39 (1 << art::arm64::X20) | (1 << art::arm64::X21) | (1 << art::arm64::X22) | 40 (1 << art::arm64::X23) | (1 << art::arm64::X24) | (1 << art::arm64::X25) | 41 (1 << art::arm64::X26) | (1 << art::arm64::X27) | (1 << art::arm64::X28) | 42 (1 << art::arm64::X29); 43 // X0 is the method pointer. Not saved. 44 static constexpr uint32_t kArm64CalleeSaveArgSpills = 45 (1 << art::arm64::X1) | (1 << art::arm64::X2) | (1 << art::arm64::X3) | 46 (1 << art::arm64::X4) | (1 << art::arm64::X5) | (1 << art::arm64::X6) | 47 (1 << art::arm64::X7); 48 static constexpr uint32_t kArm64CalleeSaveAllSpills = 49 (1 << art::arm64::X19); 50 static constexpr uint32_t kArm64CalleeSaveEverythingSpills = 51 (1 << art::arm64::X0) | (1 << art::arm64::X1) | (1 << art::arm64::X2) | 52 (1 << art::arm64::X3) | (1 << art::arm64::X4) | (1 << art::arm64::X5) | 53 (1 << art::arm64::X6) | (1 << art::arm64::X7) | (1 << art::arm64::X8) | 54 (1 << art::arm64::X9) | (1 << art::arm64::X10) | (1 << art::arm64::X11) | 55 (1 << art::arm64::X12) | (1 << art::arm64::X13) | (1 << art::arm64::X14) | 56 (1 << art::arm64::X15) | (1 << art::arm64::X16) | (1 << art::arm64::X17) | 57 (1 << art::arm64::X18) | (1 << art::arm64::X19); 58 59 static constexpr uint32_t kArm64CalleeSaveFpAlwaysSpills = 0; 60 static constexpr uint32_t kArm64CalleeSaveFpRefSpills = 0; 61 static constexpr uint32_t kArm64CalleeSaveFpArgSpills = 62 (1 << art::arm64::D0) | (1 << art::arm64::D1) | (1 << art::arm64::D2) | 63 (1 << art::arm64::D3) | (1 << art::arm64::D4) | (1 << art::arm64::D5) | 64 (1 << art::arm64::D6) | (1 << art::arm64::D7); 65 static constexpr uint32_t kArm64CalleeSaveFpAllSpills = 66 (1 << art::arm64::D8) | (1 << art::arm64::D9) | (1 << art::arm64::D10) | 67 (1 << art::arm64::D11) | (1 << art::arm64::D12) | (1 << art::arm64::D13) | 68 (1 << art::arm64::D14) | (1 << art::arm64::D15); 69 static constexpr uint32_t kArm64CalleeSaveFpEverythingSpills = 70 (1 << art::arm64::D0) | (1 << art::arm64::D1) | (1 << art::arm64::D2) | 71 (1 << art::arm64::D3) | (1 << art::arm64::D4) | (1 << art::arm64::D5) | 72 (1 << art::arm64::D6) | (1 << art::arm64::D7) | (1 << art::arm64::D8) | 73 (1 << art::arm64::D9) | (1 << art::arm64::D10) | (1 << art::arm64::D11) | 74 (1 << art::arm64::D12) | (1 << art::arm64::D13) | (1 << art::arm64::D14) | 75 (1 << art::arm64::D15) | (1 << art::arm64::D16) | (1 << art::arm64::D17) | 76 (1 << art::arm64::D18) | (1 << art::arm64::D19) | (1 << art::arm64::D20) | 77 (1 << art::arm64::D21) | (1 << art::arm64::D22) | (1 << art::arm64::D23) | 78 (1 << art::arm64::D24) | (1 << art::arm64::D25) | (1 << art::arm64::D26) | 79 (1 << art::arm64::D27) | (1 << art::arm64::D28) | (1 << art::arm64::D29) | 80 (1 << art::arm64::D30) | (1 << art::arm64::D31); 81 82 constexpr uint32_t Arm64CalleeSaveCoreSpills(CalleeSaveType type) { 83 type = GetCanonicalCalleeSaveType(type); 84 return kArm64CalleeSaveAlwaysSpills | kArm64CalleeSaveRefSpills | 85 (type == CalleeSaveType::kSaveRefsAndArgs ? kArm64CalleeSaveArgSpills : 0) | 86 (type == CalleeSaveType::kSaveAllCalleeSaves ? kArm64CalleeSaveAllSpills : 0) | 87 (type == CalleeSaveType::kSaveEverything ? kArm64CalleeSaveEverythingSpills : 0); 88 } 89 90 constexpr uint32_t Arm64CalleeSaveFpSpills(CalleeSaveType type) { 91 type = GetCanonicalCalleeSaveType(type); 92 return kArm64CalleeSaveFpAlwaysSpills | kArm64CalleeSaveFpRefSpills | 93 (type == CalleeSaveType::kSaveRefsAndArgs ? kArm64CalleeSaveFpArgSpills : 0) | 94 (type == CalleeSaveType::kSaveAllCalleeSaves ? kArm64CalleeSaveFpAllSpills : 0) | 95 (type == CalleeSaveType::kSaveEverything ? kArm64CalleeSaveFpEverythingSpills : 0); 96 } 97 98 constexpr uint32_t Arm64CalleeSaveFrameSize(CalleeSaveType type) { 99 type = GetCanonicalCalleeSaveType(type); 100 return RoundUp((POPCOUNT(Arm64CalleeSaveCoreSpills(type)) /* gprs */ + 101 POPCOUNT(Arm64CalleeSaveFpSpills(type)) /* fprs */ + 102 1 /* Method* */) * static_cast<size_t>(kArm64PointerSize), kStackAlignment); 103 } 104 105 constexpr QuickMethodFrameInfo Arm64CalleeSaveMethodFrameInfo(CalleeSaveType type) { 106 type = GetCanonicalCalleeSaveType(type); 107 return QuickMethodFrameInfo(Arm64CalleeSaveFrameSize(type), 108 Arm64CalleeSaveCoreSpills(type), 109 Arm64CalleeSaveFpSpills(type)); 110 } 111 112 constexpr size_t Arm64CalleeSaveFpr1Offset(CalleeSaveType type) { 113 type = GetCanonicalCalleeSaveType(type); 114 return Arm64CalleeSaveFrameSize(type) - 115 (POPCOUNT(Arm64CalleeSaveCoreSpills(type)) + 116 POPCOUNT(Arm64CalleeSaveFpSpills(type))) * static_cast<size_t>(kArm64PointerSize); 117 } 118 119 constexpr size_t Arm64CalleeSaveGpr1Offset(CalleeSaveType type) { 120 type = GetCanonicalCalleeSaveType(type); 121 return Arm64CalleeSaveFrameSize(type) - 122 POPCOUNT(Arm64CalleeSaveCoreSpills(type)) * static_cast<size_t>(kArm64PointerSize); 123 } 124 125 constexpr size_t Arm64CalleeSaveLrOffset(CalleeSaveType type) { 126 type = GetCanonicalCalleeSaveType(type); 127 return Arm64CalleeSaveFrameSize(type) - 128 POPCOUNT(Arm64CalleeSaveCoreSpills(type) & (-(1 << LR))) * 129 static_cast<size_t>(kArm64PointerSize); 130 } 131 132 } // namespace arm64 133 } // namespace art 134 135 #endif // ART_RUNTIME_ARCH_ARM64_QUICK_METHOD_FRAME_INFO_ARM64_H_ 136
