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