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_MIPS64_CONTEXT_MIPS64_H_ 18 #define ART_RUNTIME_ARCH_MIPS64_CONTEXT_MIPS64_H_ 19 20 #include <android-base/logging.h> 21 22 #include "arch/context.h" 23 #include "base/macros.h" 24 #include "registers_mips64.h" 25 26 namespace art { 27 namespace mips64 { 28 29 class Mips64Context : public Context { 30 public: 31 Mips64Context() { 32 Reset(); 33 } 34 virtual ~Mips64Context() {} 35 36 void Reset() OVERRIDE; 37 38 void FillCalleeSaves(uint8_t* frame, const QuickMethodFrameInfo& fr) OVERRIDE; 39 40 void SetSP(uintptr_t new_sp) OVERRIDE { 41 SetGPR(SP, new_sp); 42 } 43 44 void SetPC(uintptr_t new_pc) OVERRIDE { 45 SetGPR(T9, new_pc); 46 } 47 48 bool IsAccessibleGPR(uint32_t reg) OVERRIDE { 49 DCHECK_LT(reg, static_cast<uint32_t>(kNumberOfGpuRegisters)); 50 return gprs_[reg] != nullptr; 51 } 52 53 uintptr_t* GetGPRAddress(uint32_t reg) OVERRIDE { 54 DCHECK_LT(reg, static_cast<uint32_t>(kNumberOfGpuRegisters)); 55 return gprs_[reg]; 56 } 57 58 uintptr_t GetGPR(uint32_t reg) OVERRIDE { 59 CHECK_LT(reg, static_cast<uint32_t>(kNumberOfGpuRegisters)); 60 DCHECK(IsAccessibleGPR(reg)); 61 return *gprs_[reg]; 62 } 63 64 void SetGPR(uint32_t reg, uintptr_t value) OVERRIDE; 65 66 bool IsAccessibleFPR(uint32_t reg) OVERRIDE { 67 CHECK_LT(reg, static_cast<uint32_t>(kNumberOfFpuRegisters)); 68 return fprs_[reg] != nullptr; 69 } 70 71 uintptr_t GetFPR(uint32_t reg) OVERRIDE { 72 CHECK_LT(reg, static_cast<uint32_t>(kNumberOfFpuRegisters)); 73 DCHECK(IsAccessibleFPR(reg)); 74 return *fprs_[reg]; 75 } 76 77 void SetFPR(uint32_t reg, uintptr_t value) OVERRIDE; 78 79 void SmashCallerSaves() OVERRIDE; 80 NO_RETURN void DoLongJump() OVERRIDE; 81 82 void SetArg0(uintptr_t new_arg0_value) OVERRIDE { 83 SetGPR(A0, new_arg0_value); 84 } 85 86 private: 87 // Pointers to registers in the stack, initialized to null except for the special cases below. 88 uintptr_t* gprs_[kNumberOfGpuRegisters]; 89 uint64_t* fprs_[kNumberOfFpuRegisters]; 90 // Hold values for sp and t9 if they are not located within a stack frame. We use t9 for the 91 // PC (as ra is required to be valid for single-frame deopt and must not be clobbered). We 92 // also need the first argument for single-frame deopt. 93 uintptr_t sp_, t9_, arg0_; 94 }; 95 96 } // namespace mips64 97 } // namespace art 98 99 #endif // ART_RUNTIME_ARCH_MIPS64_CONTEXT_MIPS64_H_ 100
