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/*
* 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_MIPS_CONTEXT_MIPS_H_
#define ART_RUNTIME_ARCH_MIPS_CONTEXT_MIPS_H_
#include <android-base/logging.h>
#include "arch/context.h"
#include "base/macros.h"
#include "registers_mips.h"
namespace art {
namespace mips {
class MipsContext : public Context {
public:
MipsContext() {
Reset();
}
virtual ~MipsContext() {}
void Reset() override;
void FillCalleeSaves(uint8_t* frame, const QuickMethodFrameInfo& fr) override;
void SetSP(uintptr_t new_sp) override {
SetGPR(SP, new_sp);
}
void SetPC(uintptr_t new_pc) override {
SetGPR(T9, new_pc);
}
bool IsAccessibleGPR(uint32_t reg) override {
CHECK_LT(reg, static_cast<uint32_t>(kNumberOfCoreRegisters));
return gprs_[reg] != nullptr;
}
uintptr_t* GetGPRAddress(uint32_t reg) override {
DCHECK_LT(reg, static_cast<uint32_t>(kNumberOfCoreRegisters));
return gprs_[reg];
}
uintptr_t GetGPR(uint32_t reg) override {
CHECK_LT(reg, static_cast<uint32_t>(kNumberOfCoreRegisters));
DCHECK(IsAccessibleGPR(reg));
return *gprs_[reg];
}
void SetGPR(uint32_t reg, uintptr_t value) override;
bool IsAccessibleFPR(uint32_t reg) override {
CHECK_LT(reg, static_cast<uint32_t>(kNumberOfFRegisters));
return fprs_[reg] != nullptr;
}
uintptr_t GetFPR(uint32_t reg) override {
CHECK_LT(reg, static_cast<uint32_t>(kNumberOfFRegisters));
DCHECK(IsAccessibleFPR(reg));
return *fprs_[reg];
}
void SetFPR(uint32_t reg, uintptr_t value) override;
void SmashCallerSaves() override;
NO_RETURN void DoLongJump() override;
void SetArg0(uintptr_t new_arg0_value) override {
SetGPR(A0, new_arg0_value);
}
private:
// Pointers to registers in the stack, initialized to null except for the special cases below.
uintptr_t* gprs_[kNumberOfCoreRegisters];
uint32_t* fprs_[kNumberOfFRegisters];
// Hold values for sp and t9 if they are not located within a stack frame. We use t9 for the
// PC (as ra is required to be valid for single-frame deopt and must not be clobbered). We
// also need the first argument for single-frame deopt.
uintptr_t sp_, t9_, arg0_;
};
} // namespace mips
} // namespace art
#endif // ART_RUNTIME_ARCH_MIPS_CONTEXT_MIPS_H_
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