1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_RUNTIME_ARCH_X86_QUICK_METHOD_FRAME_INFO_X86_H_
18#define ART_RUNTIME_ARCH_X86_QUICK_METHOD_FRAME_INFO_X86_H_
19
20#include "base/bit_utils.h"
21#include "quick/quick_method_frame_info.h"
22#include "registers_x86.h"
23#include "runtime.h"  // for Runtime::CalleeSaveType.
24
25namespace art {
26namespace x86 {
27
28enum XMM {
29  XMM0 = 0,
30  XMM1 = 1,
31  XMM2 = 2,
32  XMM3 = 3,
33  XMM4 = 4,
34  XMM5 = 5,
35  XMM6 = 6,
36  XMM7 = 7,
37};
38
39static constexpr uint32_t kX86CalleeSaveRefSpills =
40    (1 << art::x86::EBP) | (1 << art::x86::ESI) | (1 << art::x86::EDI);
41static constexpr uint32_t kX86CalleeSaveArgSpills =
42    (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX);
43static constexpr uint32_t kX86CalleeSaveFpArgSpills =
44    (1 << art::x86::XMM0) | (1 << art::x86::XMM1) |
45    (1 << art::x86::XMM2) | (1 << art::x86::XMM3);
46
47constexpr uint32_t X86CalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
48  return kX86CalleeSaveRefSpills | (type == Runtime::kRefsAndArgs ? kX86CalleeSaveArgSpills : 0) |
49      (1 << art::x86::kNumberOfCpuRegisters);  // fake return address callee save
50}
51
52constexpr uint32_t X86CalleeSaveFpSpills(Runtime::CalleeSaveType type) {
53    return type == Runtime::kRefsAndArgs ? kX86CalleeSaveFpArgSpills : 0;
54}
55
56constexpr uint32_t X86CalleeSaveFrameSize(Runtime::CalleeSaveType type) {
57  return RoundUp((POPCOUNT(X86CalleeSaveCoreSpills(type)) /* gprs */ +
58                  2 * POPCOUNT(X86CalleeSaveFpSpills(type)) /* fprs */ +
59                  1 /* Method* */) * kX86PointerSize, kStackAlignment);
60}
61
62constexpr QuickMethodFrameInfo X86CalleeSaveMethodFrameInfo(Runtime::CalleeSaveType type) {
63  return QuickMethodFrameInfo(X86CalleeSaveFrameSize(type),
64                              X86CalleeSaveCoreSpills(type),
65                              X86CalleeSaveFpSpills(type));
66}
67
68}  // namespace x86
69}  // namespace art
70
71#endif  // ART_RUNTIME_ARCH_X86_QUICK_METHOD_FRAME_INFO_X86_H_
72