1 /* 2 * Copyright (C) 2011 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_MIPS_CONTEXT_MIPS_H_ 18 #define ART_RUNTIME_ARCH_MIPS_CONTEXT_MIPS_H_ 19 20 #include "arch/context.h" 21 #include "base/logging.h" 22 #include "registers_mips.h" 23 24 namespace art { 25 namespace mips { 26 27 class MipsContext : public Context { 28 public: MipsContext()29 MipsContext() { 30 Reset(); 31 } ~MipsContext()32 virtual ~MipsContext() {} 33 34 virtual void Reset(); 35 36 virtual void FillCalleeSaves(const StackVisitor& fr); 37 SetSP(uintptr_t new_sp)38 virtual void SetSP(uintptr_t new_sp) { 39 SetGPR(SP, new_sp); 40 } 41 SetPC(uintptr_t new_pc)42 virtual void SetPC(uintptr_t new_pc) { 43 SetGPR(RA, new_pc); 44 } 45 GetGPR(uint32_t reg)46 virtual uintptr_t GetGPR(uint32_t reg) { 47 CHECK_LT(reg, static_cast<uint32_t>(kNumberOfCoreRegisters)); 48 return *gprs_[reg]; 49 } 50 51 virtual void SetGPR(uint32_t reg, uintptr_t value); 52 virtual void SmashCallerSaves(); 53 virtual void DoLongJump(); 54 55 private: 56 // Pointers to registers in the stack, initialized to NULL except for the special cases below. 57 uintptr_t* gprs_[kNumberOfCoreRegisters]; 58 uint32_t* fprs_[kNumberOfFRegisters]; 59 // Hold values for sp and ra (return address) if they are not located within a stack frame. 60 uintptr_t sp_, ra_; 61 }; 62 } // namespace mips 63 } // namespace art 64 65 #endif // ART_RUNTIME_ARCH_MIPS_CONTEXT_MIPS_H_ 66