Commit | Line | Data |
---|---|---|
b11be056 | 1 | /* subr_prf.c 6.1 83/07/29 */ |
8cbb423c BJ |
2 | |
3 | #include "../h/param.h" | |
4 | #include "../h/systm.h" | |
5 | #include "../h/seg.h" | |
6 | #include "../h/buf.h" | |
7 | #include "../h/conf.h" | |
0dc06be8 | 8 | #include "../h/reboot.h" |
90f8d91f BJ |
9 | #include "../h/vm.h" |
10 | #include "../h/msgbuf.h" | |
d11b28dc RE |
11 | #include "../h/dir.h" |
12 | #include "../h/user.h" | |
961945a8 | 13 | #include "../h/proc.h" |
d11b28dc | 14 | #include "../h/tty.h" |
96d38f03 | 15 | |
e3d5bfde SL |
16 | #ifdef vax |
17 | #include "../vax/mtpr.h" | |
18 | #endif | |
19 | ||
8cbb423c BJ |
20 | /* |
21 | * In case console is off, | |
22 | * panicstr contains argument to last | |
23 | * call to panic. | |
24 | */ | |
8cbb423c BJ |
25 | char *panicstr; |
26 | ||
27 | /* | |
28 | * Scaled down version of C Library printf. | |
b725a0ca BJ |
29 | * Used to print diagnostic information directly on console tty. |
30 | * Since it is not interrupt driven, all system activities are | |
31 | * suspended. Printf should not be used for chit-chat. | |
32 | * | |
33 | * One additional format: %b is supported to decode error registers. | |
34 | * Usage is: | |
35 | * printf("reg=%b\n", regval, "<base><arg>*"); | |
36 | * Where <base> is the output base expressed as a control character, | |
37 | * e.g. \10 gives octal; \20 gives hex. Each arg is a sequence of | |
38 | * characters, the first of which gives the bit number to be inspected | |
39 | * (origin 1), and the next characters (up to a control character, i.e. | |
40 | * a character <= 32), give the name of the register. Thus | |
41 | * printf("reg=%b\n", 3, "\10\2BITTWO\1BITONE\n"); | |
42 | * would produce output: | |
43 | * reg=2<BITTWO,BITONE> | |
8cbb423c BJ |
44 | */ |
45 | /*VARARGS1*/ | |
46 | printf(fmt, x1) | |
b725a0ca BJ |
47 | char *fmt; |
48 | unsigned x1; | |
96d38f03 BJ |
49 | { |
50 | ||
51 | prf(fmt, &x1, 0); | |
52 | } | |
53 | ||
843267b1 | 54 | /* |
b725a0ca BJ |
55 | * Uprintf prints to the current user's terminal, |
56 | * guarantees not to sleep (so can be called by interrupt routines) | |
57 | * and does no watermark checking - (so no verbose messages). | |
843267b1 BJ |
58 | */ |
59 | /*VARARGS1*/ | |
60 | uprintf(fmt, x1) | |
b725a0ca | 61 | char *fmt; |
843267b1 | 62 | unsigned x1; |
96d38f03 BJ |
63 | { |
64 | ||
843267b1 | 65 | prf(fmt, &x1, 2); |
96d38f03 BJ |
66 | } |
67 | ||
843267b1 | 68 | prf(fmt, adx, touser) |
b725a0ca BJ |
69 | register char *fmt; |
70 | register u_int *adx; | |
8cbb423c | 71 | { |
d5726689 | 72 | register int b, c, i; |
8cbb423c | 73 | char *s; |
3c79e4ff | 74 | int any; |
8cbb423c | 75 | |
8cbb423c | 76 | loop: |
843267b1 | 77 | while ((c = *fmt++) != '%') { |
8cbb423c BJ |
78 | if(c == '\0') |
79 | return; | |
843267b1 | 80 | putchar(c, touser); |
8cbb423c | 81 | } |
843267b1 | 82 | again: |
8cbb423c | 83 | c = *fmt++; |
b725a0ca | 84 | /* THIS CODE IS VAX DEPENDENT IN HANDLING %l? AND %c */ |
843267b1 BJ |
85 | switch (c) { |
86 | ||
87 | case 'l': | |
88 | goto again; | |
89 | case 'x': case 'X': | |
90 | b = 16; | |
91 | goto number; | |
92 | case 'd': case 'D': | |
93 | case 'u': /* what a joke */ | |
94 | b = 10; | |
95 | goto number; | |
96 | case 'o': case 'O': | |
97 | b = 8; | |
98 | number: | |
a0eab615 | 99 | printn((u_long)*adx, b, touser); |
843267b1 BJ |
100 | break; |
101 | case 'c': | |
d5726689 BJ |
102 | b = *adx; |
103 | for (i = 24; i >= 0; i -= 8) | |
104 | if (c = (b >> i) & 0x7f) | |
105 | putchar(c, touser); | |
843267b1 | 106 | break; |
3c79e4ff BJ |
107 | case 'b': |
108 | b = *adx++; | |
109 | s = (char *)*adx; | |
a0eab615 | 110 | printn((u_long)b, *s++, touser); |
3c79e4ff BJ |
111 | any = 0; |
112 | if (b) { | |
113 | putchar('<', touser); | |
114 | while (i = *s++) { | |
115 | if (b & (1 << (i-1))) { | |
116 | if (any) | |
117 | putchar(',', touser); | |
118 | any = 1; | |
119 | for (; (c = *s) > 32; s++) | |
120 | putchar(c, touser); | |
121 | } else | |
122 | for (; *s > 32; s++) | |
123 | ; | |
124 | } | |
1ce587f2 BJ |
125 | if (any) |
126 | putchar('>', touser); | |
3c79e4ff BJ |
127 | } |
128 | break; | |
129 | ||
843267b1 | 130 | case 's': |
8cbb423c | 131 | s = (char *)*adx; |
96d38f03 | 132 | while (c = *s++) |
843267b1 BJ |
133 | putchar(c, touser); |
134 | break; | |
2bb8d359 BJ |
135 | |
136 | case '%': | |
137 | putchar('%', touser); | |
138 | break; | |
8cbb423c BJ |
139 | } |
140 | adx++; | |
141 | goto loop; | |
142 | } | |
143 | ||
b725a0ca BJ |
144 | /* |
145 | * Printn prints a number n in base b. | |
146 | * We don't use recursion to avoid deep kernel stacks. | |
147 | */ | |
843267b1 | 148 | printn(n, b, touser) |
a0eab615 | 149 | u_long n; |
8cbb423c | 150 | { |
d5726689 | 151 | char prbuf[11]; |
843267b1 | 152 | register char *cp; |
8cbb423c | 153 | |
843267b1 BJ |
154 | if (b == 10 && (int)n < 0) { |
155 | putchar('-', touser); | |
156 | n = (unsigned)(-(int)n); | |
8cbb423c | 157 | } |
d5726689 | 158 | cp = prbuf; |
843267b1 BJ |
159 | do { |
160 | *cp++ = "0123456789abcdef"[n%b]; | |
161 | n /= b; | |
162 | } while (n); | |
163 | do | |
164 | putchar(*--cp, touser); | |
d5726689 | 165 | while (cp > prbuf); |
8cbb423c BJ |
166 | } |
167 | ||
168 | /* | |
0dc06be8 | 169 | * Panic is called on unresolvable fatal errors. |
b725a0ca BJ |
170 | * It prints "panic: mesg", and then reboots. |
171 | * If we are called twice, then we avoid trying to | |
172 | * sync the disks as this often leads to recursive panics. | |
8cbb423c BJ |
173 | */ |
174 | panic(s) | |
b725a0ca | 175 | char *s; |
8cbb423c | 176 | { |
68503f9a | 177 | int bootopt = RB_AUTOBOOT; |
843267b1 | 178 | |
68503f9a BJ |
179 | if (panicstr) |
180 | bootopt |= RB_NOSYNC; | |
cddce008 | 181 | else { |
961945a8 | 182 | panicstr = s; |
961945a8 | 183 | } |
a9c526c1 | 184 | printf("panic: %s\n", s); |
b725a0ca | 185 | boot(RB_PANIC, bootopt); |
8cbb423c BJ |
186 | } |
187 | ||
fdd11a14 BJ |
188 | /* |
189 | * Warn that a system table is full. | |
190 | */ | |
191 | tablefull(tab) | |
192 | char *tab; | |
193 | { | |
194 | ||
195 | printf("%s: table is full\n", tab); | |
196 | } | |
197 | ||
b725a0ca BJ |
198 | /* |
199 | * Hard error is the preface to plaintive error messages | |
fdd11a14 | 200 | * about failing disk transfers. |
b725a0ca | 201 | */ |
fdd11a14 | 202 | harderr(bp, cp) |
3c79e4ff | 203 | struct buf *bp; |
fdd11a14 | 204 | char *cp; |
8cbb423c BJ |
205 | { |
206 | ||
fdd11a14 BJ |
207 | printf("%s%d%c: hard error sn%d ", cp, |
208 | dkunit(bp), 'a'+(minor(bp->b_dev)&07), bp->b_blkno); | |
8cbb423c | 209 | } |
b725a0ca | 210 | |
96d38f03 | 211 | /* |
843267b1 | 212 | * Print a character on console or users terminal. |
96d38f03 BJ |
213 | * If destination is console then the last MSGBUFS characters |
214 | * are saved in msgbuf for inspection later. | |
215 | */ | |
49c84d3f | 216 | /*ARGSUSED*/ |
843267b1 BJ |
217 | putchar(c, touser) |
218 | register int c; | |
96d38f03 | 219 | { |
96d38f03 | 220 | |
843267b1 BJ |
221 | if (touser) { |
222 | register struct tty *tp = u.u_ttyp; | |
d11b28dc | 223 | |
c30cd845 | 224 | if (tp && (tp->t_state&TS_CARR_ON)) { |
843267b1 BJ |
225 | register s = spl6(); |
226 | if (c == '\n') | |
2752c877 BJ |
227 | (void) ttyoutput('\r', tp); |
228 | (void) ttyoutput(c, tp); | |
d11b28dc RE |
229 | ttstart(tp); |
230 | splx(s); | |
231 | } | |
232 | return; | |
233 | } | |
cddce008 | 234 | if (c != '\0' && c != '\r' && c != 0177 |
b4e32d36 | 235 | #ifdef vax |
cddce008 BJ |
236 | && mfpr(MAPEN) |
237 | #endif | |
238 | ) { | |
90f8d91f | 239 | if (msgbuf.msg_magic != MSG_MAGIC) { |
76db4195 SL |
240 | register int i; |
241 | ||
90f8d91f BJ |
242 | msgbuf.msg_bufx = 0; |
243 | msgbuf.msg_magic = MSG_MAGIC; | |
76db4195 SL |
244 | for (i=0; i < MSG_BSIZE; i++) |
245 | msgbuf.msg_bufc[i] = 0; | |
90f8d91f BJ |
246 | } |
247 | if (msgbuf.msg_bufx < 0 || msgbuf.msg_bufx >= MSG_BSIZE) | |
248 | msgbuf.msg_bufx = 0; | |
249 | msgbuf.msg_bufc[msgbuf.msg_bufx++] = c; | |
96d38f03 BJ |
250 | } |
251 | if (c == 0) | |
252 | return; | |
253 | cnputc(c); | |
254 | } |