isa_traits.hh revision 6329:5d8b91875859 
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{
46    const int MachineBytes = 8;
47
48    //This makes sure the big endian versions of certain functions are used.
49    using namespace BigEndianGuest;
50
51    // SPARC has a delay slot
52    #define ISA_HAS_DELAY_SLOT 1
53
54    // SPARC NOP (sethi %(hi(0), g0)
55    const MachInst NoopMachInst = 0x01000000;
56
57    //8K. This value is implmentation specific; and should probably
58    //be somewhere else.
59    const int LogVMPageSize = 13;
60    const int VMPageSize = (1 << LogVMPageSize);
61
62    // real address virtual mapping
63    // sort of like alpha super page, but less frequently used
64    const Addr SegKPMEnd  = ULL(0xfffffffc00000000);
65    const Addr SegKPMBase = ULL(0xfffffac000000000);
66
67    //Why does both the previous set of constants and this one exist?
68    const int PageShift = 13;
69    const int PageBytes = 1ULL << PageShift;
70
71    const int BranchPredAddrShiftAmt = 2;
72
73    StaticInstPtr decodeInst(ExtMachInst);
74
75    /////////// TLB Stuff ////////////
76    const Addr StartVAddrHole = ULL(0x0000800000000000);
77    const Addr EndVAddrHole = ULL(0xFFFF7FFFFFFFFFFF);
78    const Addr VAddrAMask = ULL(0xFFFFFFFF);
79    const Addr PAddrImplMask = ULL(0x000000FFFFFFFFFF);
80    const Addr BytesInPageMask = ULL(0x1FFF);
81
82#if FULL_SYSTEM
83    // I don't know what it's for, so I don't
84    // know what SPARC's value should be
85    // For loading... XXX This maybe could be USegEnd?? --ali
86    const Addr LoadAddrMask = ULL(0xffffffffff);
87
88    enum InterruptTypes
89    {
90        IT_TRAP_LEVEL_ZERO,
91        IT_HINTP,
92        IT_INT_VEC,
93        IT_CPU_MONDO,
94        IT_DEV_MONDO,
95        IT_RES_ERROR,
96        IT_SOFT_INT,
97        NumInterruptTypes
98    };
99
100#endif
101}
102
103#endif // __ARCH_SPARC_ISA_TRAITS_HH__
104