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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 "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 
     25 namespace art {
     26 namespace x86 {
     27 
     28 enum 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 
     39 static constexpr uint32_t kX86CalleeSaveRefSpills =
     40     (1 << art::x86::EBP) | (1 << art::x86::ESI) | (1 << art::x86::EDI);
     41 static constexpr uint32_t kX86CalleeSaveArgSpills =
     42     (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX);
     43 static constexpr uint32_t kX86CalleeSaveFpArgSpills =
     44     (1 << art::x86::XMM0) | (1 << art::x86::XMM1) |
     45     (1 << art::x86::XMM2) | (1 << art::x86::XMM3);
     46 
     47 constexpr 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 
     52 constexpr uint32_t X86CalleeSaveFpSpills(Runtime::CalleeSaveType type) {
     53     return type == Runtime::kRefsAndArgs ? kX86CalleeSaveFpArgSpills : 0;
     54 }
     55 
     56 constexpr 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 
     62 constexpr 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