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
|
#include <u.h>
#include <libc.h>
#include <thread.h>
#include "dat.h"
#include "fns.h"
int vfp = 1;
int nflag, pflag, bflag;
Ref nproc;
void
dump(void)
{
int i;
for(i = 0; i < 16; i++) {
print("R%2d %.8ux", i, P->R[i]);
if((i % 4) == 3) print("\n");
else print("\t");
}
}
static void
adjustns(void)
{
if(bind("/arm/bin", "/bin", MREPL) < 0)
sysfatal("bind: %r");
if(bind("/rc/bin", "/bin", MAFTER) < 0)
sysfatal("bind: %r");
putenv("cputype", "arm");
putenv("objtype", "arm");
}
void
cleanup(void)
{
if(P == nil)
return;
clrex();
remproc(P);
decref(&nproc);
freesegs();
fddecref(P->fd);
if(P->path != nil && decref(P->path) == 0)
free(P->path);
free(P);
}
static void
usage(void)
{
fprint(2, "usage: 5e [-npbF] text [...]\n");
exits(nil);
}
void
suicide(char *fmt, ...)
{
va_list va;
char buf[1024];
va_start(va, fmt);
vsnprint(buf, sizeof(buf), fmt, va);
va_end(va);
fprint(2, "%s\n", buf);
if(!bflag)
exits(buf);
abort();
}
int
notehandler(void *, char *note)
{
if(strncmp(note, "sys:", 4) == 0)
return 0;
if(strncmp(note, "emu:", 4) == 0)
exits(note);
addnote(note);
return 1;
}
static void
dotext(int argc, char **argv)
{
char *file;
if(**argv == '/' || **argv == '.' || **argv == '#') {
if(loadtext(*argv, argc, argv) < 0)
sysfatal("loadtext: %r");
return;
}
file = smprint("/bin/%s", *argv);
if(loadtext(file, argc, argv) < 0)
sysfatal("loadtext: %r");
free(file);
}
void
main(int argc, char **argv)
{
ARGBEGIN {
case 'n': nflag++; break;
case 'p': pflag++; break;
case 'b': bflag++; break;
case 'f': vfp = 1; break;
case 'F': vfp = 0; break;
default: usage();
} ARGEND;
if(argc < 1)
usage();
if(_nprivates < 1)
sysfatal("we don't have privates");
if(rfork(RFREND | RFNAMEG | RFENVG) < 0)
sysfatal("rfork: %r");
atexit(cleanup);
if(!nflag)
adjustns();
if(pflag)
initfs("armproc", "/proc");
initproc();
dotext(argc, argv);
atnotify(notehandler, 1);
for(;;) {
if(ultraverbose)
dump();
step();
while((P->notein - P->noteout) % NNOTE) {
donote(P->notes[P->noteout % NNOTE], 0);
ainc(&P->noteout);
}
}
}
|
