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/macros.h" 24 #include "base/pointer_size.h" 25 #include "quick/quick_method_frame_info.h" 26 #include "registers_x86.h" 27 #include "runtime_globals.h" 28 29 namespace art HIDDEN { 30 namespace x86 { 31 32 static constexpr uint32_t kX86CalleeSaveAlwaysSpills = 33 (1 << art::x86::kNumberOfCpuRegisters); // Fake return address callee save. 34 static constexpr uint32_t kX86CalleeSaveRefSpills = 35 (1 << art::x86::EBP) | (1 << art::x86::ESI) | (1 << art::x86::EDI); 36 static constexpr uint32_t kX86CalleeSaveArgSpills = 37 (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX); 38 static constexpr uint32_t kX86CalleeSaveEverythingSpills = 39 (1 << art::x86::EAX) | (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX); 40 41 static constexpr uint32_t kX86CalleeSaveFpArgSpills = 42 (1 << art::x86::XMM0) | (1 << art::x86::XMM1) | 43 (1 << art::x86::XMM2) | (1 << art::x86::XMM3); 44 static constexpr uint32_t kX86CalleeSaveFpEverythingSpills = 45 (1 << art::x86::XMM0) | (1 << art::x86::XMM1) | 46 (1 << art::x86::XMM2) | (1 << art::x86::XMM3) | 47 (1 << art::x86::XMM4) | (1 << art::x86::XMM5) | 48 (1 << art::x86::XMM6) | (1 << art::x86::XMM7); 49 50 class X86CalleeSaveFrame { 51 public: GetCoreSpills(CalleeSaveType type)52 static constexpr uint32_t GetCoreSpills(CalleeSaveType type) { 53 type = GetCanonicalCalleeSaveType(type); 54 return kX86CalleeSaveAlwaysSpills | kX86CalleeSaveRefSpills | 55 (type == CalleeSaveType::kSaveRefsAndArgs ? kX86CalleeSaveArgSpills : 0) | 56 (type == CalleeSaveType::kSaveEverything ? kX86CalleeSaveEverythingSpills : 0); 57 } 58 GetFpSpills(CalleeSaveType type)59 static constexpr uint32_t GetFpSpills(CalleeSaveType type) { 60 type = GetCanonicalCalleeSaveType(type); 61 return (type == CalleeSaveType::kSaveRefsAndArgs ? kX86CalleeSaveFpArgSpills : 0) | 62 (type == CalleeSaveType::kSaveEverything ? kX86CalleeSaveFpEverythingSpills : 0); 63 } 64 GetFrameSize(CalleeSaveType type)65 static constexpr uint32_t GetFrameSize(CalleeSaveType type) { 66 type = GetCanonicalCalleeSaveType(type); 67 return RoundUp((POPCOUNT(GetCoreSpills(type)) /* gprs */ + 68 2 * POPCOUNT(GetFpSpills(type)) /* fprs */ + 69 1 /* Method* */) * static_cast<size_t>(kX86PointerSize), kStackAlignment); 70 } 71 GetMethodFrameInfo(CalleeSaveType type)72 static constexpr QuickMethodFrameInfo GetMethodFrameInfo(CalleeSaveType type) { 73 type = GetCanonicalCalleeSaveType(type); 74 return QuickMethodFrameInfo(GetFrameSize(type), GetCoreSpills(type), GetFpSpills(type)); 75 } 76 GetFpr1Offset(CalleeSaveType type)77 static constexpr size_t GetFpr1Offset(CalleeSaveType type) { 78 type = GetCanonicalCalleeSaveType(type); 79 return GetFrameSize(type) - 80 (POPCOUNT(GetCoreSpills(type)) + 81 2 * POPCOUNT(GetFpSpills(type))) * static_cast<size_t>(kX86PointerSize); 82 } 83 GetGpr1Offset(CalleeSaveType type)84 static constexpr size_t GetGpr1Offset(CalleeSaveType type) { 85 type = GetCanonicalCalleeSaveType(type); 86 return GetFrameSize(type) - 87 POPCOUNT(GetCoreSpills(type)) * static_cast<size_t>(kX86PointerSize); 88 } 89 GetReturnPcOffset(CalleeSaveType type)90 static constexpr size_t GetReturnPcOffset(CalleeSaveType type) { 91 type = GetCanonicalCalleeSaveType(type); 92 return GetFrameSize(type) - static_cast<size_t>(kX86PointerSize); 93 } 94 }; 95 96 } // namespace x86 97 } // namespace art 98 99 #endif // ART_RUNTIME_ARCH_X86_CALLEE_SAVE_FRAME_X86_H_ 100