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