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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_ARM_QUICK_METHOD_FRAME_INFO_ARM_H_
#define ART_RUNTIME_ARCH_ARM_QUICK_METHOD_FRAME_INFO_ARM_H_
#include "base/bit_utils.h"
#include "quick/quick_method_frame_info.h"
#include "registers_arm.h"
#include "runtime.h" // for Runtime::CalleeSaveType.
namespace art {
namespace arm {
static constexpr uint32_t kArmCalleeSaveAlwaysSpills =
(1 << art::arm::LR);
static constexpr uint32_t kArmCalleeSaveRefSpills =
(1 << art::arm::R5) | (1 << art::arm::R6) | (1 << art::arm::R7) | (1 << art::arm::R8) |
(1 << art::arm::R10) | (1 << art::arm::R11);
static constexpr uint32_t kArmCalleeSaveArgSpills =
(1 << art::arm::R1) | (1 << art::arm::R2) | (1 << art::arm::R3);
static constexpr uint32_t kArmCalleeSaveAllSpills =
(1 << art::arm::R4) | (1 << art::arm::R9);
static constexpr uint32_t kArmCalleeSaveFpAlwaysSpills = 0;
static constexpr uint32_t kArmCalleeSaveFpRefSpills = 0;
static constexpr uint32_t kArmCalleeSaveFpArgSpills =
(1 << art::arm::S0) | (1 << art::arm::S1) | (1 << art::arm::S2) | (1 << art::arm::S3) |
(1 << art::arm::S4) | (1 << art::arm::S5) | (1 << art::arm::S6) | (1 << art::arm::S7) |
(1 << art::arm::S8) | (1 << art::arm::S9) | (1 << art::arm::S10) | (1 << art::arm::S11) |
(1 << art::arm::S12) | (1 << art::arm::S13) | (1 << art::arm::S14) | (1 << art::arm::S15);
static constexpr uint32_t kArmCalleeSaveFpAllSpills =
(1 << art::arm::S16) | (1 << art::arm::S17) | (1 << art::arm::S18) | (1 << art::arm::S19) |
(1 << art::arm::S20) | (1 << art::arm::S21) | (1 << art::arm::S22) | (1 << art::arm::S23) |
(1 << art::arm::S24) | (1 << art::arm::S25) | (1 << art::arm::S26) | (1 << art::arm::S27) |
(1 << art::arm::S28) | (1 << art::arm::S29) | (1 << art::arm::S30) | (1 << art::arm::S31);
constexpr uint32_t ArmCalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
return kArmCalleeSaveAlwaysSpills | kArmCalleeSaveRefSpills |
(type == Runtime::kRefsAndArgs ? kArmCalleeSaveArgSpills : 0) |
(type == Runtime::kSaveAll ? kArmCalleeSaveAllSpills : 0);
}
constexpr uint32_t ArmCalleeSaveFpSpills(Runtime::CalleeSaveType type) {
return kArmCalleeSaveFpAlwaysSpills | kArmCalleeSaveFpRefSpills |
(type == Runtime::kRefsAndArgs ? kArmCalleeSaveFpArgSpills: 0) |
(type == Runtime::kSaveAll ? kArmCalleeSaveFpAllSpills : 0);
}
constexpr uint32_t ArmCalleeSaveFrameSize(Runtime::CalleeSaveType type) {
return RoundUp((POPCOUNT(ArmCalleeSaveCoreSpills(type)) /* gprs */ +
POPCOUNT(ArmCalleeSaveFpSpills(type)) /* fprs */ +
1 /* Method* */) * kArmPointerSize, kStackAlignment);
}
constexpr QuickMethodFrameInfo ArmCalleeSaveMethodFrameInfo(Runtime::CalleeSaveType type) {
return QuickMethodFrameInfo(ArmCalleeSaveFrameSize(type),
ArmCalleeSaveCoreSpills(type),
ArmCalleeSaveFpSpills(type));
}
constexpr size_t ArmCalleeSaveFpr1Offset(Runtime::CalleeSaveType type) {
return ArmCalleeSaveFrameSize(type) -
(POPCOUNT(ArmCalleeSaveCoreSpills(type)) +
POPCOUNT(ArmCalleeSaveFpSpills(type))) * kArmPointerSize;
}
constexpr size_t ArmCalleeSaveGpr1Offset(Runtime::CalleeSaveType type) {
return ArmCalleeSaveFrameSize(type) -
POPCOUNT(ArmCalleeSaveCoreSpills(type)) * kArmPointerSize;
}
constexpr size_t ArmCalleeSaveLrOffset(Runtime::CalleeSaveType type) {
return ArmCalleeSaveFrameSize(type) -
POPCOUNT(ArmCalleeSaveCoreSpills(type) & (-(1 << LR))) * kArmPointerSize;
}
} // namespace arm
} // namespace art
#endif // ART_RUNTIME_ARCH_ARM_QUICK_METHOD_FRAME_INFO_ARM_H_
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