isa_traits.hh revision 7741:340b6f01d69b 
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_ISA_TRAITS_HH__
33#define __ARCH_SPARC_ISA_TRAITS_HH__
34
35#include "arch/sparc/types.hh"
36#include "arch/sparc/sparc_traits.hh"
37#include "base/types.hh"
38#include "config/full_system.hh"
39
40class StaticInstPtr;
41
42namespace BigEndianGuest {}
43
44namespace SparcISA
45{
46const int MachineBytes = 8;
47
48// This makes sure the big endian versions of certain functions are used.
49using namespace BigEndianGuest;
50
51// SPARC has a delay slot
52#define ISA_HAS_DELAY_SLOT 1
53
54// SPARC NOP (sethi %(hi(0), g0)
55const MachInst NoopMachInst = 0x01000000;
56
57// 8K. This value is implmentation specific; and should probably
58// be somewhere else.
59const int LogVMPageSize = 13;
60const int VMPageSize = (1 << LogVMPageSize);
61
62// real address virtual mapping
63// sort of like alpha super page, but less frequently used
64const Addr SegKPMEnd  = ULL(0xfffffffc00000000);
65const Addr SegKPMBase = ULL(0xfffffac000000000);
66
67// Why does both the previous set of constants and this one exist?
68const int PageShift = 13;
69const int PageBytes = 1ULL << PageShift;
70
71const int BranchPredAddrShiftAmt = 2;
72
73StaticInstPtr decodeInst(ExtMachInst);
74
75/////////// TLB Stuff ////////////
76const Addr StartVAddrHole = ULL(0x0000800000000000);
77const Addr EndVAddrHole = ULL(0xFFFF7FFFFFFFFFFF);
78const Addr VAddrAMask = ULL(0xFFFFFFFF);
79const Addr PAddrImplMask = ULL(0x000000FFFFFFFFFF);
80const Addr BytesInPageMask = ULL(0x1FFF);
81
82#if FULL_SYSTEM
83enum InterruptTypes
84{
85    IT_TRAP_LEVEL_ZERO,
86    IT_HINTP,
87    IT_INT_VEC,
88    IT_CPU_MONDO,
89    IT_DEV_MONDO,
90    IT_RES_ERROR,
91    IT_SOFT_INT,
92    NumInterruptTypes
93};
94
95#endif
96
97// Memory accesses cannot be unaligned
98const bool HasUnalignedMemAcc = false;
99}
100
101#endif // __ARCH_SPARC_ISA_TRAITS_HH__
102