1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "arch/isa_traits.hh"
#include "config/the_isa.hh"
#include "mem/ruby/common/Address.hh"
#include "mem/ruby/system/System.hh"
physical_address_t
Address::getLineAddress() const
{
return bitSelect(RubySystem::getBlockSizeBits(), ADDRESS_WIDTH);
}
physical_address_t
Address::getOffset() const
{
return bitSelect(0, RubySystem::getBlockSizeBits() - 1);
}
void
Address::makeLineAddress()
{
m_address = maskLowOrderBits(RubySystem::getBlockSizeBits());
}
// returns the next stride address based on line address
void
Address::makeNextStrideAddress(int stride)
{
m_address = maskLowOrderBits(RubySystem::getBlockSizeBits())
+ RubySystem::getBlockSizeBytes()*stride;
}
int64
Address::memoryModuleIndex() const
{
int64 index =
bitSelect(RubySystem::getBlockSizeBits() +
RubySystem::getMemorySizeBits(), ADDRESS_WIDTH);
assert (index >= 0);
return index;
// int64 indexHighPortion =
// address.bitSelect(MEMORY_SIZE_BITS - 1,
// PAGE_SIZE_BITS + NUMBER_OF_MEMORY_MODULE_BITS);
// int64 indexLowPortion =
// address.bitSelect(DATA_BLOCK_BITS, PAGE_SIZE_BITS - 1);
//
// int64 index = indexLowPortion |
// (indexHighPortion << (PAGE_SIZE_BITS - DATA_BLOCK_BITS));
/*
Round-robin mapping of addresses, at page size granularity
ADDRESS_WIDTH MEMORY_SIZE_BITS PAGE_SIZE_BITS DATA_BLOCK_BITS
| | | |
\ / \ / \ / \ / 0
-----------------------------------------------------------------------
| unused |xxxxxxxxxxxxxxx| |xxxxxxxxxxxxxxx| |
| |xxxxxxxxxxxxxxx| |xxxxxxxxxxxxxxx| |
-----------------------------------------------------------------------
indexHighPortion indexLowPortion
<------->
NUMBER_OF_MEMORY_MODULE_BITS
*/
}
void
Address::print(std::ostream& out) const
{
using namespace std;
out << "[" << hex << "0x" << m_address << "," << " line 0x"
<< maskLowOrderBits(RubySystem::getBlockSizeBits()) << dec << "]"
<< flush;
}
void
Address::output(std::ostream& out) const
{
// Note: this outputs addresses in the form "ffff", not "0xffff".
// This code should always be able to write out addresses in a
// format that can be read in by the below input() method. Please
// don't change this without talking to Milo first.
out << std::hex << m_address << std::dec;
}
void
Address::input(std::istream& in)
{
// Note: this only works with addresses in the form "ffff", not
// "0xffff". This code should always be able to read in addresses
// written out by the above output() method. Please don't change
// this without talking to Milo first.
in >> std::hex >> m_address >> std::dec;
}
Address::Address(const Address& obj)
{
m_address = obj.m_address;
}
Address&
Address::operator=(const Address& obj)
{
if (this == &obj) {
// assert(false);
} else {
m_address = obj.m_address;
}
return *this;
}
void
Address::makePageAddress()
{
m_address = maskLowOrderBits(TheISA::PageShift);
}
Address
page_address(const Address& addr)
{
Address temp = addr;
temp.makePageAddress();
return temp;
}
Address
next_stride_address(const Address& addr, int stride)
{
Address temp = addr;
temp.makeNextStrideAddress(stride);
return temp;
}
|
