Commit | Line | Data |
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528b0614 | 1 | /* |
c82fa61b KB |
2 | * Copyright (c) 1983 The Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
32ce521f | 5 | * %sccs.include.redist.c% |
528b0614 DF |
6 | */ |
7 | ||
8 | #ifndef lint | |
9 | char copyright[] = | |
c82fa61b | 10 | "@(#) Copyright (c) 1983 The Regents of the University of California.\n\ |
528b0614 | 11 | All rights reserved.\n"; |
4d32c205 | 12 | #endif /* not lint */ |
528b0614 | 13 | |
d841a9ba | 14 | #ifndef lint |
32ce521f | 15 | static char sccsid[] = "@(#)kgmon.c 5.10 (Berkeley) %G%"; |
4d32c205 | 16 | #endif /* not lint */ |
d841a9ba | 17 | |
01538592 | 18 | #include <machine/pte.h> |
306e368d KB |
19 | |
20 | #include <sys/param.h> | |
769cbf71 | 21 | #include <sys/file.h> |
fa7eedc6 | 22 | #include <sys/vm.h> |
306e368d | 23 | #include <sys/gprof.h> |
d841a9ba KM |
24 | #include <stdio.h> |
25 | #include <nlist.h> | |
26 | #include <ctype.h> | |
7abf8d65 | 27 | #include <paths.h> |
d841a9ba KM |
28 | |
29 | #define PROFILING_ON 0 | |
4d32c205 | 30 | #define PROFILING_OFF 3 |
d841a9ba | 31 | |
d841a9ba | 32 | u_long s_textsize; |
4d32c205 | 33 | off_t sbuf, klseek(), lseek(); |
d841a9ba | 34 | int ssiz; |
d841a9ba KM |
35 | |
36 | struct nlist nl[] = { | |
37 | #define N_SYSMAP 0 | |
38 | { "_Sysmap" }, | |
39 | #define N_SYSSIZE 1 | |
40 | { "_Syssize" }, | |
41 | #define N_FROMS 2 | |
42 | { "_froms" }, | |
43 | #define N_PROFILING 3 | |
44 | { "_profiling" }, | |
45 | #define N_S_LOWPC 4 | |
46 | { "_s_lowpc" }, | |
47 | #define N_S_TEXTSIZE 5 | |
48 | { "_s_textsize" }, | |
49 | #define N_SBUF 6 | |
50 | { "_sbuf" }, | |
51 | #define N_SSIZ 7 | |
52 | { "_ssiz" }, | |
53 | #define N_TOS 8 | |
54 | { "_tos" }, | |
55 | 0, | |
56 | }; | |
57 | ||
58 | struct pte *Sysmap; | |
59 | ||
d841a9ba | 60 | int kmem; |
ecc6febd | 61 | int bflag, hflag, kflag, rflag, pflag; |
78e8943b | 62 | int debug = 0; |
d841a9ba KM |
63 | |
64 | main(argc, argv) | |
65 | int argc; | |
51eb5aa7 | 66 | char **argv; |
d841a9ba | 67 | { |
4d32c205 KB |
68 | extern char *optarg; |
69 | extern int optind; | |
70 | int ch, mode, disp, openmode; | |
71 | char *system, *kmemf, *malloc(); | |
d841a9ba | 72 | |
4d32c205 KB |
73 | while ((ch = getopt(argc, argv, "bhpr")) != EOF) |
74 | switch((char)ch) { | |
78e8943b KM |
75 | case 'b': |
76 | bflag++; | |
77 | break; | |
78 | case 'h': | |
79 | hflag++; | |
78e8943b | 80 | break; |
ecc6febd KM |
81 | case 'p': |
82 | pflag++; | |
4d32c205 KB |
83 | break; |
84 | case 'r': | |
85 | rflag++; | |
78e8943b KM |
86 | break; |
87 | default: | |
306e368d KB |
88 | (void)fprintf(stderr, |
89 | "usage: kgmon [-bhrp] [system [core]]\n"); | |
78e8943b KM |
90 | exit(1); |
91 | } | |
51eb5aa7 KB |
92 | argc -= optind; |
93 | argv += optind; | |
4d32c205 | 94 | |
306e368d | 95 | kmemf = _PATH_KMEM; |
51eb5aa7 | 96 | if (*argv) { |
d841a9ba | 97 | system = *argv; |
51eb5aa7 | 98 | if (*++argv) { |
4d32c205 | 99 | kmemf = *argv; |
51eb5aa7 | 100 | ++kflag; |
4d32c205 | 101 | } |
d841a9ba | 102 | } |
4d32c205 | 103 | else |
306e368d | 104 | system = _PATH_UNIX; |
4d32c205 KB |
105 | |
106 | if (nlist(system, nl) < 0 || nl[0].n_type == 0) { | |
306e368d | 107 | (void)fprintf(stderr, "kgmon: %s: no namelist\n", system); |
01538592 | 108 | exit(2); |
d841a9ba | 109 | } |
4d32c205 | 110 | if (!nl[N_PROFILING].n_value) { |
306e368d KB |
111 | (void)fprintf(stderr, |
112 | "kgmon: profiling: not defined in kernel.\n"); | |
4d32c205 | 113 | exit(10); |
d841a9ba | 114 | } |
51eb5aa7 KB |
115 | |
116 | openmode = (bflag || hflag || pflag || rflag) ? O_RDWR : O_RDONLY; | |
ecc6febd | 117 | kmem = open(kmemf, openmode); |
d841a9ba | 118 | if (kmem < 0) { |
769cbf71 | 119 | openmode = O_RDONLY; |
ecc6febd | 120 | kmem = open(kmemf, openmode); |
d841a9ba | 121 | if (kmem < 0) { |
d841a9ba | 122 | perror(kmemf); |
01538592 | 123 | exit(3); |
d841a9ba | 124 | } |
306e368d | 125 | (void)fprintf(stderr, "%s opened read-only\n", kmemf); |
78e8943b | 126 | if (rflag) |
306e368d | 127 | (void)fprintf(stderr, "-r supressed\n"); |
78e8943b | 128 | if (bflag) |
306e368d | 129 | (void)fprintf(stderr, "-b supressed\n"); |
78e8943b | 130 | if (hflag) |
306e368d | 131 | (void)fprintf(stderr, "-h supressed\n"); |
4d32c205 | 132 | rflag = bflag = hflag = 0; |
d841a9ba | 133 | } |
78e8943b | 134 | if (kflag) { |
d841a9ba KM |
135 | off_t off; |
136 | ||
4d32c205 KB |
137 | Sysmap = (struct pte *) |
138 | malloc((u_int)(nl[N_SYSSIZE].n_value * sizeof(struct pte))); | |
139 | if (!Sysmap) { | |
306e368d KB |
140 | (void)fprintf(stderr, |
141 | "kgmon: can't get memory for Sysmap.\n"); | |
4d32c205 | 142 | exit(1); |
d841a9ba | 143 | } |
4d32c205 KB |
144 | off = nl[N_SYSMAP].n_value & ~KERNBASE; |
145 | (void)lseek(kmem, off, L_SET); | |
146 | (void)read(kmem, (char *)Sysmap, | |
147 | (int)(nl[N_SYSSIZE].n_value * sizeof(struct pte))); | |
d841a9ba | 148 | } |
79ec4952 | 149 | mode = kfetch(N_PROFILING); |
78e8943b KM |
150 | if (hflag) |
151 | disp = PROFILING_OFF; | |
152 | else if (bflag) | |
153 | disp = PROFILING_ON; | |
154 | else | |
79ec4952 | 155 | disp = mode; |
ecc6febd | 156 | if (pflag) { |
769cbf71 | 157 | if (openmode == O_RDONLY && mode == PROFILING_ON) |
306e368d | 158 | (void)fprintf(stderr, "data may be inconsistent\n"); |
78e8943b | 159 | dumpstate(); |
79ec4952 | 160 | } |
78e8943b KM |
161 | if (rflag) |
162 | resetstate(); | |
163 | turnonoff(disp); | |
306e368d KB |
164 | (void)fprintf(stdout, |
165 | "kernel profiling is %s.\n", disp ? "off" : "running"); | |
78e8943b KM |
166 | } |
167 | ||
168 | dumpstate() | |
169 | { | |
306e368d | 170 | extern int errno; |
78e8943b | 171 | struct rawarc rawarc; |
4d32c205 KB |
172 | struct tostruct *tos; |
173 | u_long frompc; | |
174 | off_t kfroms, ktos; | |
175 | u_short *froms; /* froms is a bunch of u_shorts indexing tos */ | |
176 | int i, fd, fromindex, endfrom, fromssize, tossize, toindex; | |
306e368d | 177 | char buf[BUFSIZ], *s_lowpc, *malloc(), *strerror(); |
78e8943b | 178 | |
d841a9ba KM |
179 | turnonoff(PROFILING_OFF); |
180 | fd = creat("gmon.out", 0666); | |
181 | if (fd < 0) { | |
182 | perror("gmon.out"); | |
183 | return; | |
184 | } | |
185 | ssiz = kfetch(N_SSIZ); | |
186 | sbuf = kfetch(N_SBUF); | |
4d32c205 | 187 | (void)klseek(kmem, (off_t)sbuf, L_SET); |
d841a9ba KM |
188 | for (i = ssiz; i > 0; i -= BUFSIZ) { |
189 | read(kmem, buf, i < BUFSIZ ? i : BUFSIZ); | |
190 | write(fd, buf, i < BUFSIZ ? i : BUFSIZ); | |
191 | } | |
192 | s_textsize = kfetch(N_S_TEXTSIZE); | |
78e8943b | 193 | fromssize = s_textsize / HASHFRACTION; |
4d32c205 | 194 | froms = (u_short *)malloc((u_int)fromssize); |
d841a9ba | 195 | kfroms = kfetch(N_FROMS); |
4d32c205 | 196 | (void)klseek(kmem, kfroms, L_SET); |
78e8943b KM |
197 | i = read(kmem, ((char *)(froms)), fromssize); |
198 | if (i != fromssize) { | |
306e368d KB |
199 | (void)fprintf(stderr, "read kmem: request %d, got %d: %s", |
200 | fromssize, i, strerror(errno)); | |
78e8943b | 201 | exit(5); |
d841a9ba | 202 | } |
78e8943b | 203 | tossize = (s_textsize * ARCDENSITY / 100) * sizeof(struct tostruct); |
4d32c205 | 204 | tos = (struct tostruct *)malloc((u_int)tossize); |
d841a9ba | 205 | ktos = kfetch(N_TOS); |
4d32c205 | 206 | (void)klseek(kmem, ktos, L_SET); |
78e8943b KM |
207 | i = read(kmem, ((char *)(tos)), tossize); |
208 | if (i != tossize) { | |
306e368d KB |
209 | (void)fprintf(stderr, "read kmem: request %d, got %d: %s", |
210 | tossize, i, strerror(errno)); | |
78e8943b | 211 | exit(6); |
d841a9ba KM |
212 | } |
213 | s_lowpc = (char *)kfetch(N_S_LOWPC); | |
214 | if (debug) | |
306e368d | 215 | (void)fprintf(stderr, "s_lowpc 0x%x, s_textsize 0x%x\n", |
d841a9ba | 216 | s_lowpc, s_textsize); |
78e8943b KM |
217 | endfrom = fromssize / sizeof(*froms); |
218 | for (fromindex = 0; fromindex < endfrom; fromindex++) { | |
d841a9ba KM |
219 | if (froms[fromindex] == 0) |
220 | continue; | |
78e8943b KM |
221 | frompc = (u_long)s_lowpc + |
222 | (fromindex * HASHFRACTION * sizeof(*froms)); | |
d841a9ba KM |
223 | for (toindex = froms[fromindex]; toindex != 0; |
224 | toindex = tos[toindex].link) { | |
225 | if (debug) | |
306e368d | 226 | (void)fprintf(stderr, |
d841a9ba KM |
227 | "[mcleanup] frompc 0x%x selfpc 0x%x count %d\n" , |
228 | frompc, tos[toindex].selfpc, tos[toindex].count); | |
229 | rawarc.raw_frompc = frompc; | |
230 | rawarc.raw_selfpc = (u_long)tos[toindex].selfpc; | |
231 | rawarc.raw_count = tos[toindex].count; | |
4d32c205 | 232 | write(fd, (char *)&rawarc, sizeof (rawarc)); |
d841a9ba KM |
233 | } |
234 | } | |
235 | close(fd); | |
78e8943b KM |
236 | } |
237 | ||
238 | resetstate() | |
239 | { | |
78e8943b | 240 | off_t kfroms, ktos; |
4d32c205 | 241 | int i, fromssize, tossize; |
78e8943b KM |
242 | char buf[BUFSIZ]; |
243 | ||
244 | turnonoff(PROFILING_OFF); | |
245 | bzero(buf, BUFSIZ); | |
246 | ssiz = kfetch(N_SSIZ); | |
247 | sbuf = kfetch(N_SBUF); | |
248 | ssiz -= sizeof(struct phdr); | |
249 | sbuf += sizeof(struct phdr); | |
4d32c205 | 250 | (void)klseek(kmem, (off_t)sbuf, L_SET); |
78e8943b KM |
251 | for (i = ssiz; i > 0; i -= BUFSIZ) |
252 | if (write(kmem, buf, i < BUFSIZ ? i : BUFSIZ) < 0) { | |
253 | perror("sbuf write"); | |
01538592 | 254 | exit(7); |
78e8943b KM |
255 | } |
256 | s_textsize = kfetch(N_S_TEXTSIZE); | |
257 | fromssize = s_textsize / HASHFRACTION; | |
258 | kfroms = kfetch(N_FROMS); | |
4d32c205 | 259 | (void)klseek(kmem, kfroms, L_SET); |
78e8943b KM |
260 | for (i = fromssize; i > 0; i -= BUFSIZ) |
261 | if (write(kmem, buf, i < BUFSIZ ? i : BUFSIZ) < 0) { | |
262 | perror("kforms write"); | |
01538592 | 263 | exit(8); |
78e8943b KM |
264 | } |
265 | tossize = (s_textsize * ARCDENSITY / 100) * sizeof(struct tostruct); | |
266 | ktos = kfetch(N_TOS); | |
4d32c205 | 267 | (void)klseek(kmem, ktos, L_SET); |
78e8943b KM |
268 | for (i = tossize; i > 0; i -= BUFSIZ) |
269 | if (write(kmem, buf, i < BUFSIZ ? i : BUFSIZ) < 0) { | |
270 | perror("ktos write"); | |
01538592 | 271 | exit(9); |
78e8943b | 272 | } |
d841a9ba KM |
273 | } |
274 | ||
275 | turnonoff(onoff) | |
276 | int onoff; | |
277 | { | |
4d32c205 KB |
278 | (void)klseek(kmem, (long)nl[N_PROFILING].n_value, L_SET); |
279 | (void)write(kmem, (char *)&onoff, sizeof (onoff)); | |
d841a9ba KM |
280 | } |
281 | ||
282 | kfetch(index) | |
283 | int index; | |
284 | { | |
285 | off_t off; | |
286 | int value; | |
287 | ||
288 | if ((off = nl[index].n_value) == 0) { | |
289 | printf("%s: not defined in kernel\n", nl[index].n_name); | |
01538592 | 290 | exit(11); |
d841a9ba | 291 | } |
769cbf71 | 292 | if (klseek(kmem, off, L_SET) == -1) { |
d841a9ba | 293 | perror("lseek"); |
01538592 | 294 | exit(12); |
d841a9ba KM |
295 | } |
296 | if (read(kmem, (char *)&value, sizeof (value)) != sizeof (value)) { | |
297 | perror("read"); | |
01538592 | 298 | exit(13); |
d841a9ba KM |
299 | } |
300 | return (value); | |
301 | } | |
302 | ||
4d32c205 | 303 | off_t |
d841a9ba | 304 | klseek(fd, base, off) |
4d32c205 KB |
305 | int fd, off; |
306 | off_t base; | |
d841a9ba | 307 | { |
4d32c205 KB |
308 | if (kflag) { /* get kernel pte */ |
309 | base &= ~KERNBASE; | |
310 | base = ctob(Sysmap[btop(base)].pg_pfnum) + (base & PGOFSET); | |
d841a9ba KM |
311 | } |
312 | return (lseek(fd, base, off)); | |
313 | } |