gem5  v22.1.0.0
Address.cc
Go to the documentation of this file.
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 
34 namespace gem5
35 {
36 
37 namespace ruby
38 {
39 
40 Addr
41 bitSelect(Addr addr, unsigned int small, unsigned int big)
42 {
43  assert(big >= small);
44  return bits<Addr>(addr, big, small);
45 }
46 
47 Addr
48 maskLowOrderBits(Addr addr, unsigned int number)
49 {
50  return mbits<Addr>(addr, 63, number);
51 }
52 
53 Addr
55 {
57 }
58 
59 Addr
61 {
62  return mbits<Addr>(addr, 63, RubySystem::getBlockSizeBits());
63 }
64 
65 Addr
66 makeLineAddress(Addr addr, int cacheLineBits)
67 {
68  return maskLowOrderBits(addr, cacheLineBits);
69 }
70 
71 // returns the next stride address based on line address
72 Addr
74 {
75  return makeLineAddress(addr) +
76  static_cast<int>(RubySystem::getBlockSizeBytes()) * stride;
77 }
78 
79 std::string
81 {
82  std::stringstream out;
83  out << "[" << std::hex << "0x" << addr << "," << " line 0x"
84  << makeLineAddress(addr) << std::dec << "]";
85  return out.str();
86 }
87 
88 } // namespace ruby
89 } // namespace gem5
static uint32_t getBlockSizeBytes()
Definition: RubySystem.hh:72
static uint32_t getBlockSizeBits()
Definition: RubySystem.hh:73
Bitfield< 21, 20 > stride
Definition: misc_types.hh:453
Bitfield< 3 > addr
Definition: types.hh:84
Addr makeNextStrideAddress(Addr addr, int stride)
Definition: Address.cc:73
Addr maskLowOrderBits(Addr addr, unsigned int number)
Definition: Address.cc:48
Addr makeLineAddress(Addr addr)
Definition: Address.cc:60
Addr getOffset(Addr addr)
Definition: Address.cc:54
Addr bitSelect(Addr addr, unsigned int small, unsigned int big)
Definition: Address.cc:41
std::string printAddress(Addr addr)
Definition: Address.cc:80
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
uint64_t Addr
Address type This will probably be moved somewhere else in the near future.
Definition: types.hh:147

Generated on Wed Dec 21 2022 10:22:38 for gem5 by doxygen 1.9.1