isa.hh

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/*
 * Copyright (c) 2009 The Regents of The University of Michigan
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#ifndef __ARCH_X86_ISA_HH__
#define __ARCH_X86_ISA_HH__
 
#include <iostream>
#include <string>
 
#include "arch/generic/isa.hh"
#include "arch/x86/pcstate.hh"
#include "arch/x86/regs/ccr.hh"
#include "arch/x86/regs/float.hh"
#include "arch/x86/regs/int.hh"
#include "arch/x86/regs/misc.hh"
#include "base/types.hh"
#include "cpu/reg_class.hh"
 
namespace gem5
{
 
class ThreadContext;
struct X86ISAParams;
 
namespace X86ISA
{
 
class ISA : public BaseISA
{
  private:
    RegVal regVal[misc_reg::NumRegs];
    void updateHandyM5Reg(Efer efer, CR0 cr0,
            SegAttr csAttr, SegAttr ssAttr, RFLAGS rflags);
 
    std::string vendorString;
 
  public:
    void clear() override;
 
    PCStateBase *
    newPCState(Addr new_inst_addr=0) const override
    {
        return new PCState(new_inst_addr);
    }
 
    using Params = X86ISAParams;
 
    ISA(const Params &p);
 
    RegVal readMiscRegNoEffect(RegIndex idx) const override;
    RegVal readMiscReg(RegIndex idx) override;
 
    void setMiscRegNoEffect(RegIndex idx, RegVal val) override;
    void setMiscReg(RegIndex idx, RegVal val) override;
 
    bool
    inUserMode() const override
    {
        HandyM5Reg m5reg = readMiscRegNoEffect(misc_reg::M5Reg);
        return m5reg.cpl == 3;
    }
 
    void copyRegsFrom(ThreadContext *src) override;
 
    void serialize(CheckpointOut &cp) const override;
    void unserialize(CheckpointIn &cp) override;
 
    void setThreadContext(ThreadContext *_tc) override;
 
    std::string getVendorString() const;
};
 
} // namespace X86ISA
} // namespace gem5
 
#endif