/* * Copyright (C) 2014 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef ART_RUNTIME_ARCH_ARM64_CALLEE_SAVE_FRAME_ARM64_H_ #define ART_RUNTIME_ARCH_ARM64_CALLEE_SAVE_FRAME_ARM64_H_ #include "arch/instruction_set.h" #include "base/bit_utils.h" #include "base/callee_save_type.h" #include "base/enums.h" #include "quick/quick_method_frame_info.h" #include "registers_arm64.h" #include "runtime_globals.h" namespace art { namespace arm64 { // Registers need to be restored but not preserved by aapcs64. static constexpr uint32_t kArm64CalleeSaveAlwaysSpills = // Note: ArtMethod::GetReturnPcOffsetInBytes() rely on the assumption that // LR is always saved on the top of the frame for all targets. // That is, lr = *(sp + framesize - pointer_size). (1 << art::arm64::LR); // Callee saved registers static constexpr uint32_t kArm64CalleeSaveRefSpills = (1 << art::arm64::X20) | (1 << art::arm64::X21) | (1 << art::arm64::X22) | (1 << art::arm64::X23) | (1 << art::arm64::X24) | (1 << art::arm64::X25) | (1 << art::arm64::X26) | (1 << art::arm64::X27) | (1 << art::arm64::X28) | (1 << art::arm64::X29); // X0 is the method pointer. Not saved. static constexpr uint32_t kArm64CalleeSaveArgSpills = (1 << art::arm64::X1) | (1 << art::arm64::X2) | (1 << art::arm64::X3) | (1 << art::arm64::X4) | (1 << art::arm64::X5) | (1 << art::arm64::X6) | (1 << art::arm64::X7); static constexpr uint32_t kArm64CalleeSaveAllSpills = (1 << art::arm64::X19); static constexpr uint32_t kArm64CalleeSaveEverythingSpills = (1 << art::arm64::X0) | (1 << art::arm64::X1) | (1 << art::arm64::X2) | (1 << art::arm64::X3) | (1 << art::arm64::X4) | (1 << art::arm64::X5) | (1 << art::arm64::X6) | (1 << art::arm64::X7) | (1 << art::arm64::X8) | (1 << art::arm64::X9) | (1 << art::arm64::X10) | (1 << art::arm64::X11) | (1 << art::arm64::X12) | (1 << art::arm64::X13) | (1 << art::arm64::X14) | (1 << art::arm64::X15) | (1 << art::arm64::X16) | (1 << art::arm64::X17) | (1 << art::arm64::X19); static constexpr uint32_t kArm64CalleeSaveFpAlwaysSpills = 0; static constexpr uint32_t kArm64CalleeSaveFpRefSpills = 0; static constexpr uint32_t kArm64CalleeSaveFpArgSpills = (1 << art::arm64::D0) | (1 << art::arm64::D1) | (1 << art::arm64::D2) | (1 << art::arm64::D3) | (1 << art::arm64::D4) | (1 << art::arm64::D5) | (1 << art::arm64::D6) | (1 << art::arm64::D7); static constexpr uint32_t kArm64CalleeSaveFpAllSpills = (1 << art::arm64::D8) | (1 << art::arm64::D9) | (1 << art::arm64::D10) | (1 << art::arm64::D11) | (1 << art::arm64::D12) | (1 << art::arm64::D13) | (1 << art::arm64::D14) | (1 << art::arm64::D15); static constexpr uint32_t kArm64CalleeSaveFpEverythingSpills = (1 << art::arm64::D0) | (1 << art::arm64::D1) | (1 << art::arm64::D2) | (1 << art::arm64::D3) | (1 << art::arm64::D4) | (1 << art::arm64::D5) | (1 << art::arm64::D6) | (1 << art::arm64::D7) | (1 << art::arm64::D8) | (1 << art::arm64::D9) | (1 << art::arm64::D10) | (1 << art::arm64::D11) | (1 << art::arm64::D12) | (1 << art::arm64::D13) | (1 << art::arm64::D14) | (1 << art::arm64::D15) | (1 << art::arm64::D16) | (1 << art::arm64::D17) | (1 << art::arm64::D18) | (1 << art::arm64::D19) | (1 << art::arm64::D20) | (1 << art::arm64::D21) | (1 << art::arm64::D22) | (1 << art::arm64::D23) | (1 << art::arm64::D24) | (1 << art::arm64::D25) | (1 << art::arm64::D26) | (1 << art::arm64::D27) | (1 << art::arm64::D28) | (1 << art::arm64::D29) | (1 << art::arm64::D30) | (1 << art::arm64::D31); class Arm64CalleeSaveFrame { public: static constexpr uint32_t GetCoreSpills(CalleeSaveType type) { type = GetCanonicalCalleeSaveType(type); return kArm64CalleeSaveAlwaysSpills | kArm64CalleeSaveRefSpills | (type == CalleeSaveType::kSaveRefsAndArgs ? kArm64CalleeSaveArgSpills : 0) | (type == CalleeSaveType::kSaveAllCalleeSaves ? kArm64CalleeSaveAllSpills : 0) | (type == CalleeSaveType::kSaveEverything ? kArm64CalleeSaveEverythingSpills : 0); } static constexpr uint32_t GetFpSpills(CalleeSaveType type) { type = GetCanonicalCalleeSaveType(type); return kArm64CalleeSaveFpAlwaysSpills | kArm64CalleeSaveFpRefSpills | (type == CalleeSaveType::kSaveRefsAndArgs ? kArm64CalleeSaveFpArgSpills : 0) | (type == CalleeSaveType::kSaveAllCalleeSaves ? kArm64CalleeSaveFpAllSpills : 0) | (type == CalleeSaveType::kSaveEverything ? kArm64CalleeSaveFpEverythingSpills : 0); } static constexpr uint32_t GetFrameSize(CalleeSaveType type) { type = GetCanonicalCalleeSaveType(type); return RoundUp((POPCOUNT(GetCoreSpills(type)) /* gprs */ + POPCOUNT(GetFpSpills(type)) /* fprs */ + 1 /* Method* */) * static_cast(kArm64PointerSize), kStackAlignment); } static constexpr QuickMethodFrameInfo GetMethodFrameInfo(CalleeSaveType type) { type = GetCanonicalCalleeSaveType(type); return QuickMethodFrameInfo(GetFrameSize(type), GetCoreSpills(type), GetFpSpills(type)); } static constexpr size_t GetFpr1Offset(CalleeSaveType type) { type = GetCanonicalCalleeSaveType(type); return GetFrameSize(type) - (POPCOUNT(GetCoreSpills(type)) + POPCOUNT(GetFpSpills(type))) * static_cast(kArm64PointerSize); } static constexpr size_t GetGpr1Offset(CalleeSaveType type) { type = GetCanonicalCalleeSaveType(type); return GetFrameSize(type) - POPCOUNT(GetCoreSpills(type)) * static_cast(kArm64PointerSize); } static constexpr size_t GetReturnPcOffset(CalleeSaveType type) { type = GetCanonicalCalleeSaveType(type); return GetFrameSize(type) - static_cast(kArm64PointerSize); } }; } // namespace arm64 } // namespace art #endif // ART_RUNTIME_ARCH_ARM64_CALLEE_SAVE_FRAME_ARM64_H_