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_CALLEE_SAVE_FRAME_X86_H_ 18 #define ART_RUNTIME_ARCH_X86_CALLEE_SAVE_FRAME_X86_H_ 19 20 #include "arch/instruction_set.h" 21 #include "base/bit_utils.h" 22 #include "base/callee_save_type.h" 23 #include "base/enums.h" 24 #include "quick/quick_method_frame_info.h" 25 #include "registers_x86.h" 26 #include "runtime_globals.h" 27 28 namespace art { 29 namespace x86 { 30 31 static constexpr uint32_t kX86CalleeSaveAlwaysSpills = 32 (1 << art::x86::kNumberOfCpuRegisters); // Fake return address callee save. 33 static constexpr uint32_t kX86CalleeSaveRefSpills = 34 (1 << art::x86::EBP) | (1 << art::x86::ESI) | (1 << art::x86::EDI); 35 static constexpr uint32_t kX86CalleeSaveArgSpills = 36 (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX); 37 static constexpr uint32_t kX86CalleeSaveEverythingSpills = 38 (1 << art::x86::EAX) | (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX); 39 40 static constexpr uint32_t kX86CalleeSaveFpArgSpills = 41 (1 << art::x86::XMM0) | (1 << art::x86::XMM1) | 42 (1 << art::x86::XMM2) | (1 << art::x86::XMM3); 43 static constexpr uint32_t kX86CalleeSaveFpEverythingSpills = 44 (1 << art::x86::XMM0) | (1 << art::x86::XMM1) | 45 (1 << art::x86::XMM2) | (1 << art::x86::XMM3) | 46 (1 << art::x86::XMM4) | (1 << art::x86::XMM5) | 47 (1 << art::x86::XMM6) | (1 << art::x86::XMM7); 48 49 class X86CalleeSaveFrame { 50 public: GetCoreSpills(CalleeSaveType type)51 static constexpr uint32_t GetCoreSpills(CalleeSaveType type) { 52 type = GetCanonicalCalleeSaveType(type); 53 return kX86CalleeSaveAlwaysSpills | kX86CalleeSaveRefSpills | 54 (type == CalleeSaveType::kSaveRefsAndArgs ? kX86CalleeSaveArgSpills : 0) | 55 (type == CalleeSaveType::kSaveEverything ? kX86CalleeSaveEverythingSpills : 0); 56 } 57 GetFpSpills(CalleeSaveType type)58 static constexpr uint32_t GetFpSpills(CalleeSaveType type) { 59 type = GetCanonicalCalleeSaveType(type); 60 return (type == CalleeSaveType::kSaveRefsAndArgs ? kX86CalleeSaveFpArgSpills : 0) | 61 (type == CalleeSaveType::kSaveEverything ? kX86CalleeSaveFpEverythingSpills : 0); 62 } 63 GetFrameSize(CalleeSaveType type)64 static constexpr uint32_t GetFrameSize(CalleeSaveType type) { 65 type = GetCanonicalCalleeSaveType(type); 66 return RoundUp((POPCOUNT(GetCoreSpills(type)) /* gprs */ + 67 2 * POPCOUNT(GetFpSpills(type)) /* fprs */ + 68 1 /* Method* */) * static_cast<size_t>(kX86PointerSize), kStackAlignment); 69 } 70 GetMethodFrameInfo(CalleeSaveType type)71 static constexpr QuickMethodFrameInfo GetMethodFrameInfo(CalleeSaveType type) { 72 type = GetCanonicalCalleeSaveType(type); 73 return QuickMethodFrameInfo(GetFrameSize(type), GetCoreSpills(type), GetFpSpills(type)); 74 } 75 GetFpr1Offset(CalleeSaveType type)76 static constexpr size_t GetFpr1Offset(CalleeSaveType type) { 77 type = GetCanonicalCalleeSaveType(type); 78 return GetFrameSize(type) - 79 (POPCOUNT(GetCoreSpills(type)) + 80 2 * POPCOUNT(GetFpSpills(type))) * static_cast<size_t>(kX86PointerSize); 81 } 82 GetGpr1Offset(CalleeSaveType type)83 static constexpr size_t GetGpr1Offset(CalleeSaveType type) { 84 type = GetCanonicalCalleeSaveType(type); 85 return GetFrameSize(type) - 86 POPCOUNT(GetCoreSpills(type)) * static_cast<size_t>(kX86PointerSize); 87 } 88 GetReturnPcOffset(CalleeSaveType type)89 static constexpr size_t GetReturnPcOffset(CalleeSaveType type) { 90 type = GetCanonicalCalleeSaveType(type); 91 return GetFrameSize(type) - static_cast<size_t>(kX86PointerSize); 92 } 93 }; 94 95 } // namespace x86 96 } // namespace art 97 98 #endif // ART_RUNTIME_ARCH_X86_CALLEE_SAVE_FRAME_X86_H_ 99