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_reg.hh"
38#include "base/types.hh"
39
40namespace AlphaISA {
41
42using AlphaISAInst::MaxInstSrcRegs;
43using AlphaISAInst::MaxInstDestRegs;
44
45// Locked read/write flags are can't be detected by the ISA parser
46const int MaxMiscDestRegs = AlphaISAInst::MaxMiscDestRegs + 1;
47
48typedef RegVal IntReg;
49
50// floating point register file entry type
51typedef RegVal FloatRegBits;
52
53// control register file contents
54typedef RegVal MiscReg;
55
56// dummy typedef since we don't have CC regs
57typedef uint8_t CCReg;
58
59// dummy typedefs since we don't have vector regs
60constexpr unsigned NumVecElemPerVecReg = 2;
61using VecElem = uint32_t;
62using VecReg = ::VecRegT<VecElem, NumVecElemPerVecReg, false>;
63using ConstVecReg = ::VecRegT<VecElem, NumVecElemPerVecReg, true>;
64using VecRegContainer = VecReg::Container;
65// This has to be one to prevent warnings that are treated as errors
66constexpr unsigned NumVecRegs = 1;
67
68enum MiscRegIndex
69{
70 MISCREG_FPCR = NumInternalProcRegs,
71 MISCREG_UNIQ,
72 MISCREG_LOCKFLAG,
73 MISCREG_LOCKADDR,
74 MISCREG_INTR,
75 NUM_MISCREGS
76};
77
78// semantically meaningful register indices
79const RegIndex ZeroReg = 31; // architecturally meaningful
80// the rest of these depend on the ABI
81const RegIndex StackPointerReg = 30;
82const RegIndex GlobalPointerReg = 29;
83const RegIndex ProcedureValueReg = 27;
84const RegIndex ReturnAddressReg = 26;
85const RegIndex ReturnValueReg = 0;
86const RegIndex FramePointerReg = 15;
87
88const RegIndex SyscallNumReg = 0;
89const RegIndex FirstArgumentReg = 16;
90const RegIndex SyscallPseudoReturnReg = 20;
91const RegIndex SyscallSuccessReg = 19;
92
93const int NumIntArchRegs = 32;
94const int NumPALShadowRegs = 8;
95const int NumFloatArchRegs = 32;
96
97const int NumIntRegs = NumIntArchRegs + NumPALShadowRegs;
98const int NumFloatRegs = NumFloatArchRegs;
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__