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
|
/*
* Copyright (c) 2009 The Regents of The University of Michigan
* 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.
*
* Authors: Gabe Black
*/
#include "arch/sparc/isa.hh"
#include "cpu/thread_context.hh"
namespace SparcISA
{
void
ISA::clear()
{
miscRegFile.clear();
}
MiscReg
ISA::readMiscRegNoEffect(int miscReg)
{
return miscRegFile.readRegNoEffect((MiscRegIndex)miscReg);
}
MiscReg
ISA::readMiscReg(int miscReg, ThreadContext *tc)
{
return miscRegFile.readReg((MiscRegIndex)miscReg, tc);
}
void
ISA::setMiscRegNoEffect(int miscReg, const MiscReg val)
{
miscRegFile.setRegNoEffect((MiscRegIndex)miscReg, val);
}
void
ISA::setMiscReg(int miscReg, const MiscReg val, ThreadContext *tc)
{
miscRegFile.setReg((MiscRegIndex)miscReg, val, tc);
}
int
ISA::flattenIntIndex(int reg)
{
int gl = miscRegFile.readRegNoEffect(MISCREG_GL);
int cwp = miscRegFile.readRegNoEffect(MISCREG_CWP);
//DPRINTF(RegisterWindows, "Global Level = %d, Current Window Pointer = %d\n", gl, cwp);
int newReg;
//The total number of global registers
int numGlobals = (MaxGL + 1) * 8;
if(reg < 8)
{
//Global register
//Put it in the appropriate set of globals
newReg = reg + gl * 8;
}
else if(reg < NumIntArchRegs)
{
//Regular windowed register
//Put it in the window pointed to by cwp
newReg = numGlobals +
((reg - 8 - cwp * 16 + NWindows * 16) % (NWindows * 16));
}
else if(reg < NumIntArchRegs + NumMicroIntRegs)
{
//Microcode register
//Displace from the end of the regular registers
newReg = reg - NumIntArchRegs + numGlobals + NWindows * 16;
}
else if(reg < 2 * NumIntArchRegs + NumMicroIntRegs)
{
reg -= (NumIntArchRegs + NumMicroIntRegs);
if(reg < 8)
{
//Global register from the next window
//Put it in the appropriate set of globals
newReg = reg + gl * 8;
}
else
{
//Windowed register from the previous window
//Put it in the window before the one pointed to by cwp
newReg = numGlobals +
((reg - 8 - (cwp - 1) * 16 + NWindows * 16) % (NWindows * 16));
}
}
else if(reg < 3 * NumIntArchRegs + NumMicroIntRegs)
{
reg -= (2 * NumIntArchRegs + NumMicroIntRegs);
if(reg < 8)
{
//Global register from the previous window
//Put it in the appropriate set of globals
newReg = reg + gl * 8;
}
else
{
//Windowed register from the next window
//Put it in the window after the one pointed to by cwp
newReg = numGlobals +
((reg - 8 - (cwp + 1) * 16 + NWindows * 16) % (NWindows * 16));
}
}
else
panic("Tried to flatten invalid register index %d!\n", reg);
DPRINTF(RegisterWindows, "Flattened register %d to %d.\n", reg, newReg);
return newReg;
}
void
ISA::serialize(EventManager *em, std::ostream &os)
{
miscRegFile.serialize(em, os);
}
void
ISA::unserialize(EventManager *em, Checkpoint *cp, const std::string §ion)
{
miscRegFile.unserialize(em, cp, section);
}
}
|
