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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_REGISTERS_HH__
#define __ARCH_ARM_REGISTERS_HH__
#include "arch/arm/max_inst_regs.hh"
#include "arch/arm/intregs.hh"
#include "arch/arm/miscregs.hh"
namespace ArmISA {
using ArmISAInst::MaxInstSrcRegs;
using ArmISAInst::MaxInstDestRegs;
typedef uint16_t RegIndex;
typedef uint64_t IntReg;
// floating point register file entry type
typedef uint32_t FloatRegBits;
typedef float FloatReg;
// cop-0/cop-1 system control register
typedef uint64_t MiscReg;
// Constants Related to the number of registers
const int NumIntArchRegs = NUM_ARCH_INTREGS;
// The number of single precision floating point registers
const int NumFloatArchRegs = 64;
const int NumFloatSpecialRegs = 5;
const int NumIntRegs = NUM_INTREGS;
const int NumFloatRegs = NumFloatArchRegs + NumFloatSpecialRegs;
const int NumMiscRegs = NUM_MISCREGS;
// semantically meaningful register indices
const int ReturnValueReg = 0;
const int ReturnValueReg1 = 1;
const int ReturnValueReg2 = 2;
const int ArgumentReg0 = 0;
const int ArgumentReg1 = 1;
const int ArgumentReg2 = 2;
const int ArgumentReg3 = 3;
const int FramePointerReg = 11;
const int StackPointerReg = INTREG_SP;
const int ReturnAddressReg = INTREG_LR;
const int PCReg = INTREG_PC;
const int ZeroReg = INTREG_ZERO;
const int SyscallNumReg = ReturnValueReg;
const int SyscallPseudoReturnReg = ReturnValueReg;
const int SyscallSuccessReg = ReturnValueReg;
// These help enumerate all the registers for dependence tracking.
const int FP_Base_DepTag = NumIntRegs;
const int Ctrl_Base_DepTag = FP_Base_DepTag + NumFloatRegs;
typedef union {
IntReg intreg;
FloatReg fpreg;
MiscReg ctrlreg;
} AnyReg;
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
};
} // namespace ArmISA
#endif
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