registers.hh revision 10934:5af8f40d8f2c 
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 *          Ali Saidi
30 */
31
32#ifndef __ARCH_SPARC_REGISTERS_HH__
33#define __ARCH_SPARC_REGISTERS_HH__
34
35#include "arch/sparc/generated/max_inst_regs.hh"
36#include "arch/sparc/miscregs.hh"
37#include "arch/sparc/sparc_traits.hh"
38#include "base/types.hh"
39
40namespace SparcISA
41{
42
43using SparcISAInst::MaxInstSrcRegs;
44using SparcISAInst::MaxInstDestRegs;
45using SparcISAInst::MaxMiscDestRegs;
46
47typedef uint64_t IntReg;
48typedef uint64_t MiscReg;
49typedef float FloatReg;
50typedef uint32_t FloatRegBits;
51
52// dummy typedef since we don't have CC regs
53typedef uint8_t CCReg;
54// vector register file entry type
55typedef uint64_t VectorRegElement;
56const int NumVectorRegElements = 0;
57const int VectorRegBytes = NumVectorRegElements * sizeof(VectorRegElement);
58typedef std::array<VectorRegElement, NumVectorRegElements> VectorReg;
59
60typedef union
61{
62    IntReg intReg;
63    FloatReg fpreg;
64    MiscReg ctrlreg;
65} AnyReg;
66
67typedef uint16_t RegIndex;
68
69// semantically meaningful register indices
70const int ZeroReg = 0;      // architecturally meaningful
71// the rest of these depend on the ABI
72const int ReturnAddressReg = 31; // post call, precall is 15
73const int ReturnValueReg = 8;  // Post return, 24 is pre-return.
74const int StackPointerReg = 14;
75const int FramePointerReg = 30;
76
77// Some OS syscall use a second register (o1) to return a second value
78const int SyscallPseudoReturnReg = 9;
79
80const int NumIntArchRegs = 32;
81const int NumIntRegs = (MaxGL + 1) * 8 + NWindows * 16 + NumMicroIntRegs;
82const int NumCCRegs = 0;
83const int NumVectorRegs = 0;
84
85const int TotalNumRegs = NumIntRegs + NumFloatRegs + NumMiscRegs;
86
87// These enumerate all the registers for dependence tracking.
88enum DependenceTags {
89    FP_Reg_Base = NumIntRegs,
90    CC_Reg_Base = FP_Reg_Base + NumFloatRegs,
91    Vector_Reg_Base = CC_Reg_Base + NumCCRegs, // NumCCRegs == 0
92    Misc_Reg_Base = Vector_Reg_Base + NumVectorRegs, // NumVectorRegs == 0
93    Max_Reg_Index = Misc_Reg_Base + NumMiscRegs,
94};
95
96} // namespace SparcISA
97
98#endif
99