1/*
2 * Copyright (c) 2013 ARM Limited
3 * Copyright (c) 2014-2015 Sven Karlsson
4 * All rights reserved
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating
9 * to a hardware implementation of the functionality of the software
10 * licensed hereunder.  You may use the software subject to the license
11 * terms below provided that you ensure that this notice is replicated
12 * unmodified and in its entirety in all distributions of the software,
13 * modified or unmodified, in source code or in binary form.
14 *
15 * Copyright (c) 2016 The University of Virginia
16 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions are
20 * met: redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer;
22 * redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution;
25 * neither the name of the copyright holders nor the names of its
26 * contributors may be used to endorse or promote products derived from
27 * this software without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Authors: Andreas Hansson
42 *          Sven Karlsson
43 *          Alec Roelke
44 */
45
46#ifndef __ARCH_RISCV_ISA_TRAITS_HH__
47#define __ARCH_RISCV_ISA_TRAITS_HH__
48
49#include "arch/riscv/types.hh"
50#include "base/types.hh"
51#include "cpu/static_inst_fwd.hh"
52
53namespace LittleEndianGuest {}
54
55namespace RiscvISA
56{
57
58using namespace LittleEndianGuest;
59
60const Addr PageShift = 12;
61const Addr PageBytes = ULL(1) << PageShift;
62
63// Memory accesses can be unaligned (at least for double-word memory accesses)
64const bool HasUnalignedMemAcc = true;
65
66const bool CurThreadInfoImplemented = false;
67const int CurThreadInfoReg = -1;
68
69}
70
71#endif //__ARCH_RISCV_ISA_TRAITS_HH__
72