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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_64_QUICK_METHOD_FRAME_INFO_X86_64_H_
     18 #define ART_RUNTIME_ARCH_X86_64_QUICK_METHOD_FRAME_INFO_X86_64_H_
     19 
     20 #include "base/bit_utils.h"
     21 #include "quick/quick_method_frame_info.h"
     22 #include "registers_x86_64.h"
     23 #include "runtime.h"  // for Runtime::CalleeSaveType.
     24 
     25 namespace art {
     26 namespace x86_64 {
     27 
     28 static constexpr uint32_t kX86_64CalleeSaveRefSpills =
     29     (1 << art::x86_64::RBX) | (1 << art::x86_64::RBP) | (1 << art::x86_64::R12) |
     30     (1 << art::x86_64::R13) | (1 << art::x86_64::R14) | (1 << art::x86_64::R15);
     31 static constexpr uint32_t kX86_64CalleeSaveArgSpills =
     32     (1 << art::x86_64::RSI) | (1 << art::x86_64::RDX) | (1 << art::x86_64::RCX) |
     33     (1 << art::x86_64::R8) | (1 << art::x86_64::R9);
     34 static constexpr uint32_t kX86_64CalleeSaveFpArgSpills =
     35     (1 << art::x86_64::XMM0) | (1 << art::x86_64::XMM1) | (1 << art::x86_64::XMM2) |
     36     (1 << art::x86_64::XMM3) | (1 << art::x86_64::XMM4) | (1 << art::x86_64::XMM5) |
     37     (1 << art::x86_64::XMM6) | (1 << art::x86_64::XMM7);
     38 static constexpr uint32_t kX86_64CalleeSaveFpSpills =
     39     (1 << art::x86_64::XMM12) | (1 << art::x86_64::XMM13) |
     40     (1 << art::x86_64::XMM14) | (1 << art::x86_64::XMM15);
     41 
     42 constexpr uint32_t X86_64CalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
     43   return kX86_64CalleeSaveRefSpills |
     44       (type == Runtime::kRefsAndArgs ? kX86_64CalleeSaveArgSpills : 0) |
     45       (1 << art::x86_64::kNumberOfCpuRegisters);  // fake return address callee save;
     46 }
     47 
     48 constexpr uint32_t X86_64CalleeSaveFpSpills(Runtime::CalleeSaveType type) {
     49   return kX86_64CalleeSaveFpSpills |
     50       (type == Runtime::kRefsAndArgs ? kX86_64CalleeSaveFpArgSpills : 0);
     51 }
     52 
     53 constexpr uint32_t X86_64CalleeSaveFrameSize(Runtime::CalleeSaveType type) {
     54   return RoundUp((POPCOUNT(X86_64CalleeSaveCoreSpills(type)) /* gprs */ +
     55                   POPCOUNT(X86_64CalleeSaveFpSpills(type)) /* fprs */ +
     56                   1 /* Method* */) * kX86_64PointerSize, kStackAlignment);
     57 }
     58 
     59 constexpr QuickMethodFrameInfo X86_64CalleeSaveMethodFrameInfo(Runtime::CalleeSaveType type) {
     60   return QuickMethodFrameInfo(X86_64CalleeSaveFrameSize(type),
     61                               X86_64CalleeSaveCoreSpills(type),
     62                               X86_64CalleeSaveFpSpills(type));
     63 }
     64 
     65 }  // namespace x86_64
     66 }  // namespace art
     67 
     68 #endif  // ART_RUNTIME_ARCH_X86_64_QUICK_METHOD_FRAME_INFO_X86_64_H_
     69