1/*
2 * Copyright (c) 2004-2005 The Regents of The University of Michigan
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 * Authors: Lisa Hsu
29 * Nathan Binkert
30 */
31
32#include <map>
33#include <stack>
34#include <string>
35
36#include "arch/alpha/kernel_stats.hh"
37#include "arch/alpha/osfpal.hh"
38#include "base/trace.hh"
39#include "cpu/thread_context.hh"
40#include "kern/tru64/tru64_syscalls.hh"
41#include "sim/system.hh"
42
43using namespace std;
44using namespace Stats;
45
46namespace AlphaISA {
47namespace Kernel {
48
49const char *modestr[] = { "kernel", "user", "idle" };
50
51Statistics::Statistics(System *system)
52 : ::Kernel::Statistics(system),
53 idleProcess((Addr)-1), themode(kernel), lastModeTick(0)
54{
55}
56
57void
58Statistics::regStats(const string &_name)
59{
60 ::Kernel::Statistics::regStats(_name);
61
62 _callpal
63 .init(256)
64 .name(name() + ".callpal")
65 .desc("number of callpals executed")
66 .flags(total | pdf | nozero | nonan)
67 ;
68
69 for (int i = 0; i < PAL::NumCodes; ++i) {
70 const char *str = PAL::name(i);
71 if (str)
72 _callpal.subname(i, str);
73 }
74
75 _hwrei
76 .name(name() + ".inst.hwrei")
77 .desc("number of hwrei instructions executed")
78 ;
79
80 _mode
81 .init(cpu_mode_num)
82 .name(name() + ".mode_switch")
83 .desc("number of protection mode switches")
84 ;
85
86 for (int i = 0; i < cpu_mode_num; ++i)
87 _mode.subname(i, modestr[i]);
88
89 _modeGood
90 .init(cpu_mode_num)
91 .name(name() + ".mode_good")
92 ;
93
94 for (int i = 0; i < cpu_mode_num; ++i)
95 _modeGood.subname(i, modestr[i]);
96
97 _modeFraction
98 .name(name() + ".mode_switch_good")
99 .desc("fraction of useful protection mode switches")
100 .flags(total)
101 ;
102
103 for (int i = 0; i < cpu_mode_num; ++i)
104 _modeFraction.subname(i, modestr[i]);
105
106 _modeFraction = _modeGood / _mode;
107
108 _modeTicks
109 .init(cpu_mode_num)
110 .name(name() + ".mode_ticks")
111 .desc("number of ticks spent at the given mode")
112 .flags(pdf)
113 ;
114 for (int i = 0; i < cpu_mode_num; ++i)
115 _modeTicks.subname(i, modestr[i]);
116
117 _swap_context
118 .name(name() + ".swap_context")
119 .desc("number of times the context was actually changed")
120 ;
121}
122
123void
124Statistics::setIdleProcess(Addr idlepcbb, ThreadContext *tc)
125{
126 assert(themode == kernel);
127 idleProcess = idlepcbb;
128 themode = idle;
129 changeMode(themode, tc);
130}
131
132void
133Statistics::changeMode(cpu_mode newmode, ThreadContext *tc)
134{
135 _mode[newmode]++;
136
137 if (newmode == themode)
138 return;
139
140 DPRINTF(Context, "old mode=%-8s new mode=%-8s\n",
141 modestr[themode], modestr[newmode]);
142
143 _modeGood[newmode]++;
144 _modeTicks[themode] += curTick - lastModeTick;
145
146 lastModeTick = curTick;
147 themode = newmode;
148}
149
150void
151Statistics::mode(cpu_mode newmode, ThreadContext *tc)
152{
153 Addr pcbb = tc->readMiscReg(AlphaISA::IPR_PALtemp23);
154
155 if (newmode == kernel && pcbb == idleProcess)
156 newmode = idle;
157
158 changeMode(newmode, tc);
159}
160
161void
162Statistics::context(Addr oldpcbb, Addr newpcbb, ThreadContext *tc)
163{
164 assert(themode != user);
165
166 _swap_context++;
167 changeMode(newpcbb == idleProcess ? idle : kernel, tc);
168}
169
170void
171Statistics::callpal(int code, ThreadContext *tc)
172{
173 if (!PAL::name(code))
174 return;
175
176 _callpal[code]++;
177
178 switch (code) {
179 case PAL::callsys: {
180 int number = tc->readIntReg(0);
181 if (SystemCalls<Tru64>::validSyscallNumber(number)) {
182 int cvtnum = SystemCalls<Tru64>::convert(number);
183 _syscall[cvtnum]++;
184 }
185 } break;
186 }
187}
188
189void
190Statistics::serialize(ostream &os)
191{
192 ::Kernel::Statistics::serialize(os);
193 int exemode = themode;
194 SERIALIZE_SCALAR(exemode);
195 SERIALIZE_SCALAR(idleProcess);
196 SERIALIZE_SCALAR(lastModeTick);
197}
198
199void
200Statistics::unserialize(Checkpoint *cp, const string &section)
201{
202 ::Kernel::Statistics::unserialize(cp, section);
203 int exemode;
204 UNSERIALIZE_SCALAR(exemode);
205 UNSERIALIZE_SCALAR(idleProcess);
206 UNSERIALIZE_SCALAR(lastModeTick);
207 themode = (cpu_mode)exemode;
208}
209
210} /* end namespace AlphaISA::Kernel */
211} /* end namespace AlphaISA */