registers.hh revision 13610 
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
49typedef RegVal IntReg;
50
51// floating point register file entry type
52typedef RegVal FloatRegBits;
53
54// control register file contents
55typedef RegVal MiscReg;
56
57// dummy typedef since we don't have CC regs
58typedef uint8_t CCReg;
59
60// Not applicable to Alpha
61using VecElem = ::DummyVecElem;
62using VecReg = ::DummyVecReg;
63using ConstVecReg = ::DummyConstVecReg;
64using VecRegContainer = ::DummyVecRegContainer;
65constexpr unsigned NumVecElemPerVecReg = ::DummyNumVecElemPerVecReg;
66constexpr size_t VecRegSizeBytes = ::DummyVecRegSizeBytes;
67
68// Not applicable to Alpha
69using VecPredReg = ::DummyVecPredReg;
70using ConstVecPredReg = ::DummyConstVecPredReg;
71using VecPredRegContainer = ::DummyVecPredRegContainer;
72constexpr size_t VecPredRegSizeBits = ::DummyVecPredRegSizeBits;
73constexpr bool VecPredRegHasPackedRepr = ::DummyVecPredRegHasPackedRepr;
74
75enum MiscRegIndex
76{
77    MISCREG_FPCR = NumInternalProcRegs,
78    MISCREG_UNIQ,
79    MISCREG_LOCKFLAG,
80    MISCREG_LOCKADDR,
81    MISCREG_INTR,
82    NUM_MISCREGS
83};
84
85// semantically meaningful register indices
86const RegIndex ZeroReg = 31;     // architecturally meaningful
87// the rest of these depend on the ABI
88const RegIndex StackPointerReg = 30;
89const RegIndex GlobalPointerReg = 29;
90const RegIndex ProcedureValueReg = 27;
91const RegIndex ReturnAddressReg = 26;
92const RegIndex ReturnValueReg = 0;
93const RegIndex FramePointerReg = 15;
94
95const RegIndex SyscallNumReg = 0;
96const RegIndex FirstArgumentReg = 16;
97const RegIndex SyscallPseudoReturnReg = 20;
98const RegIndex SyscallSuccessReg = 19;
99
100const int NumIntArchRegs = 32;
101const int NumPALShadowRegs = 8;
102const int NumFloatArchRegs = 32;
103
104const int NumIntRegs = NumIntArchRegs + NumPALShadowRegs;
105const int NumFloatRegs = NumFloatArchRegs;
106const int NumVecRegs = 1;  // Not applicable to Alpha
107                           // (1 to prevent warnings)
108const int NumVecPredRegs = 1;  // Not applicable to Alpha
109                               // (1 to prevent warnings)
110const int NumCCRegs = 0;
111const int NumMiscRegs = NUM_MISCREGS;
112
113const int TotalNumRegs =
114    NumIntRegs + NumFloatRegs + NumMiscRegs;
115
116} // namespace AlphaISA
117
118#endif // __ARCH_ALPHA_REGFILE_HH__
119