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
|
#include <QCoreApplication>
#include <QCommandLineParser>
#include <cctype>
#include <iostream>
#include "tracer.h"
#include "reporter.h"
using namespace machine;
using namespace std;
void create_parser(QCommandLineParser &p) {
p.setApplicationDescription("QtMips CLI machine simulator");
p.addHelpOption();
p.addVersionOption();
p.addPositionalArgument("FILE", "Input ELF executable file");
p.addOptions({
{"pipelined", "Configure CPU to use five stage pipeline."},
{"no-delay-slot", "Disable jump delay slot."},
{{"trace-fetch", "tr-fetch"}, "Trace fetched instruction (for both pipelined and not core)."},
{{"trace-decode", "tr-decode"}, "Trace instruction in decode stage. (only for pipelined core)"},
{{"trace-execute", "tr-execute"}, "Trace instruction in execute stage. (only for pipelined core)"},
{{"trace-memory", "tr-memory"}, "Trace instruction in memory stage. (only for pipelined core)"},
{{"trace-writeback", "tr-writeback"}, "Trace instruction in write back stage. (only for pipelined core)"},
{{"trace-pc", "tr-pc"}, "Print program counter register changes."},
{{"trace-gp", "tr-gp"}, "Print general purpose register changes. You can use * for all registers.", "REG"},
{{"trace-lo", "tr-lo"}, "Print LO register changes."},
{{"trace-hi", "tr-hi"}, "Print HI register changes."},
{{"dump-registers", "d-regs"}, "Dump registers state at program exit."},
{"expect-fail", "Expect that program causes CPU trap and fail if it doesn't."},
{"fail-match", "Program should exit with exactly this CPU TRAP. Possible values are I(unsupported Instruction), A(Unsupported ALU operation), O(Overflow/underflow) and J(Unaligned Jump). You can freely combine them. Using this implies expect-fail option.", "TRAP"},
});
}
void configure_machine(QCommandLineParser &p, MachineConfig &cc) {
QStringList pa = p.positionalArguments();
if (pa.size() != 1) {
std::cerr << "Single ELF file has to be specified" << std::endl;
exit(1);
}
cc.set_elf(pa[0]);
cc.set_delay_slot(!p.isSet("no-delay-slot"));
cc.set_pipelined(p.isSet("pipelined"));
}
void configure_tracer(QCommandLineParser &p, Tracer &tr) {
if (p.isSet("trace-fetch"))
tr.fetch();
if (p.isSet("pipelined")) { // Following are added only if we have stages
if (p.isSet("trace-decode"))
tr.decode();
if (p.isSet("trace-execute"))
tr.execute();
if (p.isSet("trace-memory"))
tr.memory();
if (p.isSet("trace-writeback"))
tr.writeback();
}
if (p.isSet("trace-pc"))
tr.reg_pc();
QStringList gps = p.values("trace-gp");
for (int i = 0; i < gps.size(); i++) {
if (gps[i] == "*") {
for (int y = 0; y < 32; y++)
tr.reg_gp(y);
} else {
bool res;
int num = gps[i].toInt(&res);
if (res && num <= 32) {
tr.reg_gp(num);
} else {
cout << "Unknown register number given for trace-gp: " << gps[i].toStdString() << endl;
exit(1);
}
}
}
if (p.isSet("trace-lo"))
tr.reg_lo();
if (p.isSet("trace-hi"))
tr.reg_hi();
// TODO
}
void configure_reporter(QCommandLineParser &p, Reporter &r) {
if (p.isSet("dump-registers"))
r.regs();
QStringList fail = p.values("fail-match");
for (int i = 0; i < fail.size(); i++) {
for (int y = 0; y < fail[i].length(); y++) {
enum Reporter::FailReason reason;
switch (tolower(fail[i].toStdString()[y])) {
case 'i':
reason = Reporter::FR_I;
break;
case 'a':
reason = Reporter::FR_A;
break;
case 'o':
reason = Reporter::FR_O;
break;
case 'j':
reason = Reporter::FR_J;
break;
default:
cout << "Unknown fail condition: " << fail[i].toStdString()[y] << endl;
exit(1);
}
r.expect_fail(reason);
}
}
if (p.isSet("expect-fail") && !p.isSet("fail-match"))
r.expect_fail(Reporter::FailAny);
// TODO
}
int main(int argc, char *argv[]) {
QCoreApplication app(argc, argv);
app.setApplicationName("qtmips_cli");
app.setApplicationVersion("0.1");
QCommandLineParser p;
create_parser(p);
p.process(app);
MachineConfig cc;
configure_machine(p, cc);
QtMipsMachine machine(cc);
Tracer tr(&machine);
configure_tracer(p, tr);
Reporter r(&app, &machine);
configure_reporter(p, r);
machine.play();
return app.exec();
}
|
