110 lines
3.6 KiB
C++
110 lines
3.6 KiB
C++
/*
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* Copyright (c) 2003-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Gabe Black
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*/
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#ifndef __ARCH_ALPHA_REGISTERS_HH__
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#define __ARCH_ALPHA_REGISTERS_HH__
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#include "arch/alpha/ipr.hh"
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#include "arch/alpha/max_inst_regs.hh"
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#include "base/types.hh"
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namespace AlphaISA {
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using AlphaISAInst::MaxInstSrcRegs;
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using AlphaISAInst::MaxInstDestRegs;
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typedef uint8_t RegIndex;
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typedef uint64_t IntReg;
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// floating point register file entry type
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typedef double FloatReg;
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typedef uint64_t FloatRegBits;
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// control register file contents
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typedef uint64_t MiscReg;
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union AnyReg
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{
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IntReg intreg;
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FloatReg fpreg;
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MiscReg ctrlreg;
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};
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enum MiscRegIndex
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{
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MISCREG_FPCR = NumInternalProcRegs,
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MISCREG_UNIQ,
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MISCREG_LOCKFLAG,
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MISCREG_LOCKADDR,
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MISCREG_INTR,
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NUM_MISCREGS
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};
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// semantically meaningful register indices
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const RegIndex ZeroReg = 31; // architecturally meaningful
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// the rest of these depend on the ABI
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const RegIndex StackPointerReg = 30;
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const RegIndex GlobalPointerReg = 29;
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const RegIndex ProcedureValueReg = 27;
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const RegIndex ReturnAddressReg = 26;
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const RegIndex ReturnValueReg = 0;
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const RegIndex FramePointerReg = 15;
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const RegIndex SyscallNumReg = 0;
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const RegIndex FirstArgumentReg = 16;
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const RegIndex SyscallPseudoReturnReg = 20;
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const RegIndex SyscallSuccessReg = 19;
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const int NumIntArchRegs = 32;
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const int NumPALShadowRegs = 8;
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const int NumFloatArchRegs = 32;
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const int NumMiscArchRegs = NUM_MISCREGS;
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const int NumIntRegs = NumIntArchRegs + NumPALShadowRegs;
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const int NumFloatRegs = NumFloatArchRegs;
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const int NumMiscRegs = NumMiscArchRegs;
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const int TotalNumRegs =
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NumIntRegs + NumFloatRegs + NumMiscRegs;
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const int TotalDataRegs = NumIntRegs + NumFloatRegs;
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// These enumerate all the registers for dependence tracking.
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enum DependenceTags {
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// 0..31 are the integer regs 0..31
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// 32..63 are the FP regs 0..31, i.e. use (reg + FP_Base_DepTag)
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FP_Base_DepTag = 40,
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Ctrl_Base_DepTag = 72,
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Max_DepTag = Ctrl_Base_DepTag + NumMiscRegs + NumInternalProcRegs
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};
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} // namespace AlphaISA
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#endif // __ARCH_ALPHA_REGFILE_HH__
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