1/*
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Gabe Black
29 */
30
31#ifndef __ARCH_ALPHA_REGISTERS_HH__
32#define __ARCH_ALPHA_REGISTERS_HH__
33
34#include "arch/alpha/generated/max_inst_regs.hh"
35#include "arch/alpha/ipr.hh"
36#include "arch/generic/types.hh"
37#include "arch/generic/vec_pred_reg.hh"
38#include "arch/generic/vec_reg.hh"
39#include "base/types.hh"
40
41namespace AlphaISA {
42
43using AlphaISAInst::MaxInstSrcRegs;
44using AlphaISAInst::MaxInstDestRegs;
45
46// Locked read/write flags are can't be detected by the ISA parser
47const int MaxMiscDestRegs = AlphaISAInst::MaxMiscDestRegs + 1;
48
49// Not applicable to Alpha
50using VecElem = ::DummyVecElem;
51using VecReg = ::DummyVecReg;
52using ConstVecReg = ::DummyConstVecReg;
53using VecRegContainer = ::DummyVecRegContainer;
54constexpr unsigned NumVecElemPerVecReg = ::DummyNumVecElemPerVecReg;
55constexpr size_t VecRegSizeBytes = ::DummyVecRegSizeBytes;
56
57// Not applicable to Alpha
58using VecPredReg = ::DummyVecPredReg;
59using ConstVecPredReg = ::DummyConstVecPredReg;
60using VecPredRegContainer = ::DummyVecPredRegContainer;
61constexpr size_t VecPredRegSizeBits = ::DummyVecPredRegSizeBits;
62constexpr bool VecPredRegHasPackedRepr = ::DummyVecPredRegHasPackedRepr;
63
64enum MiscRegIndex
65{
66    MISCREG_FPCR = NumInternalProcRegs,
67    MISCREG_UNIQ,
68    MISCREG_LOCKFLAG,
69    MISCREG_LOCKADDR,
70    MISCREG_INTR,
71    NUM_MISCREGS
72};
73
74// semantically meaningful register indices
75const RegIndex ZeroReg = 31;     // architecturally meaningful
76// the rest of these depend on the ABI
77const RegIndex StackPointerReg = 30;
78const RegIndex GlobalPointerReg = 29;
79const RegIndex ProcedureValueReg = 27;
80const RegIndex ReturnAddressReg = 26;
81const RegIndex ReturnValueReg = 0;
82const RegIndex FramePointerReg = 15;
83
84const RegIndex SyscallNumReg = 0;
85const RegIndex FirstArgumentReg = 16;
86const RegIndex SyscallPseudoReturnReg = 20;
87const RegIndex SyscallSuccessReg = 19;
88
89const int NumIntArchRegs = 32;
90const int NumPALShadowRegs = 8;
91const int NumFloatArchRegs = 32;
92
93const int NumIntRegs = NumIntArchRegs + NumPALShadowRegs;
94const int NumFloatRegs = NumFloatArchRegs;
95const int NumVecRegs = 1;  // Not applicable to Alpha
96                           // (1 to prevent warnings)
97const int NumVecPredRegs = 1;  // Not applicable to Alpha
98                               // (1 to prevent warnings)
99const int NumCCRegs = 0;
100const int NumMiscRegs = NUM_MISCREGS;
101
102const int TotalNumRegs =
103    NumIntRegs + NumFloatRegs + NumMiscRegs;
104
105} // namespace AlphaISA
106
107#endif // __ARCH_ALPHA_REGFILE_HH__
108