| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ART_RUNTIME_ARCH_X86_CONTEXT_X86_H_ |
| #define ART_RUNTIME_ARCH_X86_CONTEXT_X86_H_ |
| |
| #include "arch/context.h" |
| #include "base/logging.h" |
| #include "registers_x86.h" |
| |
| namespace art { |
| namespace x86 { |
| |
| class X86Context : public Context { |
| public: |
| X86Context() { |
| Reset(); |
| } |
| virtual ~X86Context() {} |
| |
| virtual void Reset(); |
| |
| virtual void FillCalleeSaves(const StackVisitor& fr) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| virtual void SetSP(uintptr_t new_sp) { |
| SetGPR(ESP, new_sp); |
| } |
| |
| virtual void SetPC(uintptr_t new_pc) { |
| eip_ = new_pc; |
| } |
| |
| virtual uintptr_t* GetGPRAddress(uint32_t reg) { |
| DCHECK_LT(reg, static_cast<uint32_t>(kNumberOfCpuRegisters)); |
| return gprs_[reg]; |
| } |
| |
| virtual uintptr_t GetGPR(uint32_t reg) { |
| DCHECK_LT(reg, static_cast<uint32_t>(kNumberOfCpuRegisters)); |
| return *gprs_[reg]; |
| } |
| |
| virtual void SetGPR(uint32_t reg, uintptr_t value); |
| |
| virtual void SmashCallerSaves(); |
| virtual void DoLongJump(); |
| |
| private: |
| // Pointers to register locations, floating point registers are all caller save. Values are |
| // initialized to NULL or the special registers below. |
| uintptr_t* gprs_[kNumberOfCpuRegisters]; |
| // Hold values for esp and eip if they are not located within a stack frame. EIP is somewhat |
| // special in that it cannot be encoded normally as a register operand to an instruction (except |
| // in 64bit addressing modes). |
| uintptr_t esp_, eip_; |
| }; |
| } // namespace x86 |
| } // namespace art |
| |
| #endif // ART_RUNTIME_ARCH_X86_CONTEXT_X86_H_ |