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/*
* 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_QUICK_METHOD_FRAME_INFO_ARM64_H_
#define ART_RUNTIME_ARCH_ARM64_QUICK_METHOD_FRAME_INFO_ARM64_H_
#include "quick/quick_method_frame_info.h"
#include "registers_arm64.h"
#include "runtime.h" // for Runtime::CalleeSaveType.
#include "utils.h" // for POPCOUNT
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 - pointsize).
(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 =
// Thread register.
(1 << art::arm64::X18) |
// Suspend register.
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);
constexpr uint32_t Arm64CalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
return kArm64CalleeSaveAlwaysSpills | kArm64CalleeSaveRefSpills |
(type == Runtime::kRefsAndArgs ? kArm64CalleeSaveArgSpills : 0) |
(type == Runtime::kSaveAll ? kArm64CalleeSaveAllSpills : 0);
}
constexpr uint32_t Arm64CalleeSaveFpSpills(Runtime::CalleeSaveType type) {
return kArm64CalleeSaveFpAlwaysSpills | kArm64CalleeSaveFpRefSpills |
(type == Runtime::kRefsAndArgs ? kArm64CalleeSaveFpArgSpills: 0) |
(type == Runtime::kSaveAll ? kArm64CalleeSaveFpAllSpills : 0);
}
constexpr uint32_t Arm64CalleeSaveFrameSize(Runtime::CalleeSaveType type) {
return RoundUp((POPCOUNT(Arm64CalleeSaveCoreSpills(type)) /* gprs */ +
POPCOUNT(Arm64CalleeSaveFpSpills(type)) /* fprs */ +
1 /* Method* */) * kArm64PointerSize, kStackAlignment);
}
constexpr QuickMethodFrameInfo Arm64CalleeSaveMethodFrameInfo(Runtime::CalleeSaveType type) {
return QuickMethodFrameInfo(Arm64CalleeSaveFrameSize(type),
Arm64CalleeSaveCoreSpills(type),
Arm64CalleeSaveFpSpills(type));
}
constexpr size_t Arm64CalleeSaveFpr1Offset(Runtime::CalleeSaveType type) {
return Arm64CalleeSaveFrameSize(type) -
(POPCOUNT(Arm64CalleeSaveCoreSpills(type)) +
POPCOUNT(Arm64CalleeSaveFpSpills(type))) * kArm64PointerSize;
}
constexpr size_t Arm64CalleeSaveGpr1Offset(Runtime::CalleeSaveType type) {
return Arm64CalleeSaveFrameSize(type) -
POPCOUNT(Arm64CalleeSaveCoreSpills(type)) * kArm64PointerSize;
}
constexpr size_t Arm64CalleeSaveLrOffset(Runtime::CalleeSaveType type) {
return Arm64CalleeSaveFrameSize(type) -
POPCOUNT(Arm64CalleeSaveCoreSpills(type) & (-(1 << LR))) * kArm64PointerSize;
}
} // namespace arm64
} // namespace art
#endif // ART_RUNTIME_ARCH_ARM64_QUICK_METHOD_FRAME_INFO_ARM64_H_
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