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/*
* Copyright (c) 2007-2008 The Florida State University
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* 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
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Stephen Hines
*/
#ifndef __ARCH_ARM_REGFILE_REGFILE_HH__
#define __ARCH_ARM_REGFILE_REGFILE_HH__
#include "arch/arm/types.hh"
#include "arch/arm/regfile/misc_regfile.hh"
#include "sim/faults.hh"
class Checkpoint;
class EventManager;
class ThreadContext;
namespace ArmISA
{
enum FPControlRegNums {
FIR = NumFloatArchRegs,
FCCR,
FEXR,
FENR,
FCSR
};
enum FCSRBits {
Inexact = 1,
Underflow,
Overflow,
DivideByZero,
Invalid,
Unimplemented
};
enum FCSRFields {
Flag_Field = 1,
Enable_Field = 6,
Cause_Field = 11
};
enum MiscIntRegNums {
zero_reg = NumIntArchRegs,
addr_reg,
rhi,
rlo,
r8_fiq, /* FIQ mode register bank */
r9_fiq,
r10_fiq,
r11_fiq,
r12_fiq,
r13_fiq, /* FIQ mode SP and LR */
r14_fiq,
r13_irq, /* IRQ mode SP and LR */
r14_irq,
r13_svc, /* SVC mode SP and LR */
r14_svc,
r13_undef, /* UNDEF mode SP and LR */
r14_undef,
r13_abt, /* ABT mode SP and LR */
r14_abt
};
class RegFile
{
public:
void clear()
{}
protected:
Addr pc; // program counter
Addr npc; // next-cycle program counter
Addr nnpc; // next-next-cycle program counter
public:
Addr readPC()
{
return pc;
}
void setPC(Addr val)
{
pc = val;
}
Addr readNextPC()
{
return npc;
}
void setNextPC(Addr val)
{
npc = val;
}
Addr readNextNPC()
{
return npc + sizeof(MachInst);
}
void setNextNPC(Addr val)
{
//nnpc = val;
}
void serialize(EventManager *em, std::ostream &os);
void unserialize(EventManager *em, Checkpoint *cp,
const std::string §ion);
};
void copyRegs(ThreadContext *src, ThreadContext *dest);
void copyMiscRegs(ThreadContext *src, ThreadContext *dest);
} // namespace ArmISA
#endif
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