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/*
* Copyright (c) 2003-2005 The Regents of The University of Michigan
* 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: Gabe Black
*/
#ifndef __ARCH_ALPHA_REGISTERS_HH__
#define __ARCH_ALPHA_REGISTERS_HH__
#include "arch/alpha/generated/max_inst_regs.hh"
#include "arch/alpha/ipr.hh"
#include "base/types.hh"
namespace AlphaISA {
using AlphaISAInst::MaxInstSrcRegs;
using AlphaISAInst::MaxInstDestRegs;
// Locked read/write flags are can't be detected by the ISA parser
const int MaxMiscDestRegs = AlphaISAInst::MaxMiscDestRegs + 1;
typedef uint8_t RegIndex;
typedef uint64_t IntReg;
// floating point register file entry type
typedef double FloatReg;
typedef uint64_t FloatRegBits;
// control register file contents
typedef uint64_t MiscReg;
// dummy typedef since we don't have CC regs
typedef uint8_t CCReg;
union AnyReg
{
IntReg intreg;
FloatReg fpreg;
MiscReg ctrlreg;
};
enum MiscRegIndex
{
MISCREG_FPCR = NumInternalProcRegs,
MISCREG_UNIQ,
MISCREG_LOCKFLAG,
MISCREG_LOCKADDR,
MISCREG_INTR,
NUM_MISCREGS
};
// semantically meaningful register indices
const RegIndex ZeroReg = 31; // architecturally meaningful
// the rest of these depend on the ABI
const RegIndex StackPointerReg = 30;
const RegIndex GlobalPointerReg = 29;
const RegIndex ProcedureValueReg = 27;
const RegIndex ReturnAddressReg = 26;
const RegIndex ReturnValueReg = 0;
const RegIndex FramePointerReg = 15;
const RegIndex SyscallNumReg = 0;
const RegIndex FirstArgumentReg = 16;
const RegIndex SyscallPseudoReturnReg = 20;
const RegIndex SyscallSuccessReg = 19;
const int NumIntArchRegs = 32;
const int NumPALShadowRegs = 8;
const int NumFloatArchRegs = 32;
const int NumIntRegs = NumIntArchRegs + NumPALShadowRegs;
const int NumFloatRegs = NumFloatArchRegs;
const int NumCCRegs = 0;
const int NumMiscRegs = NUM_MISCREGS;
const int TotalNumRegs =
NumIntRegs + NumFloatRegs + NumMiscRegs;
// These enumerate all the registers for dependence tracking.
enum DependenceTags {
// 0..31 are the integer regs 0..31
// 32..63 are the FP regs 0..31, i.e. use (reg + FP_Reg_Base)
FP_Reg_Base = NumIntRegs,
CC_Reg_Base = FP_Reg_Base + NumFloatRegs,
Misc_Reg_Base = CC_Reg_Base + NumCCRegs, // NumCCRegs == 0
Max_Reg_Index = Misc_Reg_Base + NumMiscRegs + NumInternalProcRegs
};
} // namespace AlphaISA
#endif // __ARCH_ALPHA_REGFILE_HH__
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