gem5 v24.1.0.1
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Address.cc
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1/*
2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
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
30
31#include "base/bitfield.hh"
33
34namespace gem5
35{
36
37namespace ruby
38{
39
40Addr
41bitSelect(Addr addr, unsigned int small, unsigned int big)
42{
43 assert(big >= small);
44 return bits<Addr>(addr, big, small);
45}
46
47Addr
48maskLowOrderBits(Addr addr, unsigned int number)
49{
50 return mbits<Addr>(addr, 63, number);
51}
52
53Addr
54getOffset(Addr addr, int cacheLineBits)
55{
56 assert(cacheLineBits < 64);
57 return bitSelect(addr, 0, cacheLineBits - 1);
58}
59
60Addr
61makeLineAddress(Addr addr, int cacheLineBits)
62{
63 assert(cacheLineBits < 64);
64 return maskLowOrderBits(addr, cacheLineBits);
65}
66
67// returns the next stride address based on line address
68Addr
69makeNextStrideAddress(Addr addr, int stride, int cacheLineBytes)
70{
71 return makeLineAddress(addr, floorLog2(cacheLineBytes))
72 + cacheLineBytes * stride;
73}
74
75std::string
76printAddress(Addr addr, int cacheLineBits)
77{
78 std::stringstream out;
79 out << "[" << std::hex << "0x" << addr << "," << " line 0x"
80 << makeLineAddress(addr, cacheLineBits) << std::dec << "]";
81 return out.str();
82}
83
84} // namespace ruby
85} // namespace gem5
static constexpr std::enable_if_t< std::is_integral_v< T >, int > floorLog2(T x)
Definition intmath.hh:59
Bitfield< 21, 20 > stride
Bitfield< 3 > addr
Definition types.hh:84
Addr makeLineAddress(Addr addr, int cacheLineBits)
Definition Address.cc:61
Addr maskLowOrderBits(Addr addr, unsigned int number)
Definition Address.cc:48
std::string printAddress(Addr addr, int cacheLineBits)
Definition Address.cc:76
Addr makeNextStrideAddress(Addr addr, int stride, int cacheLineBytes)
Definition Address.cc:69
Addr getOffset(Addr addr, int cacheLineBits)
Definition Address.cc:54
Addr bitSelect(Addr addr, unsigned int small, unsigned int big)
Definition Address.cc:41
Copyright (c) 2024 Arm Limited All rights reserved.
Definition binary32.hh:36
uint64_t Addr
Address type This will probably be moved somewhere else in the near future.
Definition types.hh:147

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