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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_X86_CALLEE_SAVE_FRAME_X86_H_
#define ART_RUNTIME_ARCH_X86_CALLEE_SAVE_FRAME_X86_H_
#include "arch/instruction_set.h"
#include "base/bit_utils.h"
#include "base/callee_save_type.h"
#include "base/enums.h"
#include "base/macros.h"
#include "quick/quick_method_frame_info.h"
#include "registers_x86.h"
#include "runtime_globals.h"
namespace art HIDDEN {
namespace x86 {
static constexpr uint32_t kX86CalleeSaveAlwaysSpills =
(1 << art::x86::kNumberOfCpuRegisters); // Fake return address callee save.
static constexpr uint32_t kX86CalleeSaveRefSpills =
(1 << art::x86::EBP) | (1 << art::x86::ESI) | (1 << art::x86::EDI);
static constexpr uint32_t kX86CalleeSaveArgSpills =
(1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX);
static constexpr uint32_t kX86CalleeSaveEverythingSpills =
(1 << art::x86::EAX) | (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX);
static constexpr uint32_t kX86CalleeSaveFpArgSpills =
(1 << art::x86::XMM0) | (1 << art::x86::XMM1) |
(1 << art::x86::XMM2) | (1 << art::x86::XMM3);
static constexpr uint32_t kX86CalleeSaveFpEverythingSpills =
(1 << art::x86::XMM0) | (1 << art::x86::XMM1) |
(1 << art::x86::XMM2) | (1 << art::x86::XMM3) |
(1 << art::x86::XMM4) | (1 << art::x86::XMM5) |
(1 << art::x86::XMM6) | (1 << art::x86::XMM7);
class X86CalleeSaveFrame {
public:
static constexpr uint32_t GetCoreSpills(CalleeSaveType type) {
type = GetCanonicalCalleeSaveType(type);
return kX86CalleeSaveAlwaysSpills | kX86CalleeSaveRefSpills |
(type == CalleeSaveType::kSaveRefsAndArgs ? kX86CalleeSaveArgSpills : 0) |
(type == CalleeSaveType::kSaveEverything ? kX86CalleeSaveEverythingSpills : 0);
}
static constexpr uint32_t GetFpSpills(CalleeSaveType type) {
type = GetCanonicalCalleeSaveType(type);
return (type == CalleeSaveType::kSaveRefsAndArgs ? kX86CalleeSaveFpArgSpills : 0) |
(type == CalleeSaveType::kSaveEverything ? kX86CalleeSaveFpEverythingSpills : 0);
}
static constexpr uint32_t GetFrameSize(CalleeSaveType type) {
type = GetCanonicalCalleeSaveType(type);
return RoundUp((POPCOUNT(GetCoreSpills(type)) /* gprs */ +
2 * POPCOUNT(GetFpSpills(type)) /* fprs */ +
1 /* Method* */) * static_cast<size_t>(kX86PointerSize), 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)) +
2 * POPCOUNT(GetFpSpills(type))) * static_cast<size_t>(kX86PointerSize);
}
static constexpr size_t GetGpr1Offset(CalleeSaveType type) {
type = GetCanonicalCalleeSaveType(type);
return GetFrameSize(type) -
POPCOUNT(GetCoreSpills(type)) * static_cast<size_t>(kX86PointerSize);
}
static constexpr size_t GetReturnPcOffset(CalleeSaveType type) {
type = GetCanonicalCalleeSaveType(type);
return GetFrameSize(type) - static_cast<size_t>(kX86PointerSize);
}
};
} // namespace x86
} // namespace art
#endif // ART_RUNTIME_ARCH_X86_CALLEE_SAVE_FRAME_X86_H_