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      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 "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 
     27 namespace art {
     28 namespace x86 {
     29 
     30 enum XMM {
     31   XMM0 = 0,
     32   XMM1 = 1,
     33   XMM2 = 2,
     34   XMM3 = 3,
     35   XMM4 = 4,
     36   XMM5 = 5,
     37   XMM6 = 6,
     38   XMM7 = 7,
     39 };
     40 
     41 static constexpr uint32_t kX86CalleeSaveAlwaysSpills =
     42     (1 << art::x86::kNumberOfCpuRegisters);  // Fake return address callee save.
     43 static constexpr uint32_t kX86CalleeSaveRefSpills =
     44     (1 << art::x86::EBP) | (1 << art::x86::ESI) | (1 << art::x86::EDI);
     45 static constexpr uint32_t kX86CalleeSaveArgSpills =
     46     (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX);
     47 static constexpr uint32_t kX86CalleeSaveEverythingSpills =
     48     (1 << art::x86::EAX) | (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX);
     49 
     50 static constexpr uint32_t kX86CalleeSaveFpArgSpills =
     51     (1 << art::x86::XMM0) | (1 << art::x86::XMM1) |
     52     (1 << art::x86::XMM2) | (1 << art::x86::XMM3);
     53 static constexpr uint32_t kX86CalleeSaveFpEverythingSpills =
     54     (1 << art::x86::XMM0) | (1 << art::x86::XMM1) |
     55     (1 << art::x86::XMM2) | (1 << art::x86::XMM3) |
     56     (1 << art::x86::XMM4) | (1 << art::x86::XMM5) |
     57     (1 << art::x86::XMM6) | (1 << art::x86::XMM7);
     58 
     59 constexpr uint32_t X86CalleeSaveCoreSpills(CalleeSaveType type) {
     60   return kX86CalleeSaveAlwaysSpills | kX86CalleeSaveRefSpills |
     61       (type == CalleeSaveType::kSaveRefsAndArgs ? kX86CalleeSaveArgSpills : 0) |
     62       (type == CalleeSaveType::kSaveEverything ? kX86CalleeSaveEverythingSpills : 0);
     63 }
     64 
     65 constexpr uint32_t X86CalleeSaveFpSpills(CalleeSaveType type) {
     66     return (type == CalleeSaveType::kSaveRefsAndArgs ? kX86CalleeSaveFpArgSpills : 0) |
     67            (type == CalleeSaveType::kSaveEverything ? kX86CalleeSaveFpEverythingSpills : 0);
     68 }
     69 
     70 constexpr uint32_t X86CalleeSaveFrameSize(CalleeSaveType type) {
     71   return RoundUp((POPCOUNT(X86CalleeSaveCoreSpills(type)) /* gprs */ +
     72                   2 * POPCOUNT(X86CalleeSaveFpSpills(type)) /* fprs */ +
     73                   1 /* Method* */) * static_cast<size_t>(kX86PointerSize), kStackAlignment);
     74 }
     75 
     76 constexpr QuickMethodFrameInfo X86CalleeSaveMethodFrameInfo(CalleeSaveType type) {
     77   return QuickMethodFrameInfo(X86CalleeSaveFrameSize(type),
     78                               X86CalleeSaveCoreSpills(type),
     79                               X86CalleeSaveFpSpills(type));
     80 }
     81 
     82 }  // namespace x86
     83 }  // namespace art
     84 
     85 #endif  // ART_RUNTIME_ARCH_X86_QUICK_METHOD_FRAME_INFO_X86_H_
     86