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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_ARM_CONTEXT_ARM_H_
#define ART_RUNTIME_ARCH_ARM_CONTEXT_ARM_H_
#include "arch/context.h"
#include "base/logging.h"
#include "registers_arm.h"
namespace art {
namespace arm {
class ArmContext : public Context {
public:
ArmContext() {
Reset();
}
virtual ~ArmContext() {}
void Reset() OVERRIDE;
void FillCalleeSaves(const StackVisitor& fr) OVERRIDE SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void SetSP(uintptr_t new_sp) OVERRIDE {
bool success = SetGPR(SP, new_sp);
CHECK(success) << "Failed to set SP register";
}
void SetPC(uintptr_t new_pc) OVERRIDE {
bool success = SetGPR(PC, new_pc);
CHECK(success) << "Failed to set PC register";
}
uintptr_t* GetGPRAddress(uint32_t reg) OVERRIDE {
DCHECK_LT(reg, static_cast<uint32_t>(kNumberOfCoreRegisters));
return gprs_[reg];
}
bool GetGPR(uint32_t reg, uintptr_t* val) OVERRIDE {
DCHECK_LT(reg, static_cast<uint32_t>(kNumberOfCoreRegisters));
if (gprs_[reg] == nullptr) {
return false;
} else {
DCHECK(val != nullptr);
*val = *gprs_[reg];
return true;
}
}
bool SetGPR(uint32_t reg, uintptr_t value) OVERRIDE;
bool GetFPR(uint32_t reg, uintptr_t* val) OVERRIDE {
DCHECK_LT(reg, static_cast<uint32_t>(kNumberOfSRegisters));
if (fprs_[reg] == nullptr) {
return false;
} else {
DCHECK(val != nullptr);
*val = *fprs_[reg];
return true;
}
}
bool SetFPR(uint32_t reg, uintptr_t value) OVERRIDE;
void SmashCallerSaves() OVERRIDE;
void DoLongJump() OVERRIDE;
private:
// Pointers to register locations, initialized to NULL or the specific registers below.
uintptr_t* gprs_[kNumberOfCoreRegisters];
uint32_t* fprs_[kNumberOfSRegisters];
// Hold values for sp and pc if they are not located within a stack frame.
uintptr_t sp_, pc_;
};
} // namespace arm
} // namespace art
#endif // ART_RUNTIME_ARCH_ARM_CONTEXT_ARM_H_
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