Mercurial > illumos > illumos-gate
annotate usr/src/cmd/mdb/common/mdb/mdb_modapi.c @ 13937:6b4f289e7094
3465 ::walk ... | ::<dcmd> misinterprets input as symbol names
3466 ::tsd should handle missing/NULL values better
3467 mdb_ctf_vread() could be more useful
3468 mdb enhancements for zfs development
3470 ::whatis does not print callers from KMF_LITE
3473 mdb_get_module() returns wrong module
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Eric Schrock <eric.schrock@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>
Approved by: Dan McDonald <danmcd@nexenta.com>
author | Matthew Ahrens <mahrens@delphix.com> |
---|---|
date | Wed, 30 Jan 2013 15:02:58 -0800 |
parents | 3bb859a7330c |
children | 09f0146de94b |
rev | line source |
---|---|
0 | 1 /* |
2 * CDDL HEADER START | |
3 * | |
4 * The contents of this file are subject to the terms of the | |
3277 | 5 * Common Development and Distribution License (the "License"). |
6 * You may not use this file except in compliance with the License. | |
0 | 7 * |
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 * or http://www.opensolaris.org/os/licensing. | |
10 * See the License for the specific language governing permissions | |
11 * and limitations under the License. | |
12 * | |
13 * When distributing Covered Code, include this CDDL HEADER in each | |
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 * If applicable, add the following below this CDDL HEADER, with the | |
16 * fields enclosed by brackets "[]" replaced with your own identifying | |
17 * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 * | |
19 * CDDL HEADER END | |
20 */ | |
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21 |
0 | 22 /* |
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23 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 24 */ |
25 | |
26 #include <mdb/mdb_modapi.h> | |
27 #include <mdb/mdb_module.h> | |
28 #include <mdb/mdb_string.h> | |
29 #include <mdb/mdb_debug.h> | |
30 #include <mdb/mdb_callb.h> | |
31 #include <mdb/mdb_dump.h> | |
32 #include <mdb/mdb_err.h> | |
33 #include <mdb/mdb_io.h> | |
34 #include <mdb/mdb_lex.h> | |
35 #include <mdb/mdb_frame.h> | |
36 #include <mdb/mdb.h> | |
37 | |
38 /* | |
39 * Private callback structure for implementing mdb_walk_dcmd, below. | |
40 */ | |
41 typedef struct { | |
42 mdb_idcmd_t *dw_dcmd; | |
43 mdb_argvec_t dw_argv; | |
44 uint_t dw_flags; | |
45 } dcmd_walk_arg_t; | |
46 | |
47 /* | |
48 * Global properties which modules are allowed to look at. These are | |
49 * re-initialized by the target activation callbacks. | |
50 */ | |
51 int mdb_prop_postmortem = FALSE; /* Are we examining a dump? */ | |
52 int mdb_prop_kernel = FALSE; /* Are we examining a kernel? */ | |
53 int mdb_prop_datamodel = 0; /* Data model (see mdb_target_impl.h) */ | |
54 | |
55 ssize_t | |
56 mdb_vread(void *buf, size_t nbytes, uintptr_t addr) | |
57 { | |
58 ssize_t rbytes = mdb_tgt_vread(mdb.m_target, buf, nbytes, addr); | |
59 | |
60 if (rbytes > 0 && rbytes < nbytes) | |
61 return (set_errbytes(rbytes, nbytes)); | |
62 | |
63 return (rbytes); | |
64 } | |
65 | |
66 ssize_t | |
67 mdb_vwrite(const void *buf, size_t nbytes, uintptr_t addr) | |
68 { | |
69 return (mdb_tgt_vwrite(mdb.m_target, buf, nbytes, addr)); | |
70 } | |
71 | |
72 ssize_t | |
73 mdb_fread(void *buf, size_t nbytes, uintptr_t addr) | |
74 { | |
75 ssize_t rbytes = mdb_tgt_fread(mdb.m_target, buf, nbytes, addr); | |
76 | |
77 if (rbytes > 0 && rbytes < nbytes) | |
78 return (set_errbytes(rbytes, nbytes)); | |
79 | |
80 return (rbytes); | |
81 } | |
82 | |
83 ssize_t | |
84 mdb_fwrite(const void *buf, size_t nbytes, uintptr_t addr) | |
85 { | |
86 return (mdb_tgt_fwrite(mdb.m_target, buf, nbytes, addr)); | |
87 } | |
88 | |
89 ssize_t | |
90 mdb_pread(void *buf, size_t nbytes, physaddr_t addr) | |
91 { | |
92 ssize_t rbytes = mdb_tgt_pread(mdb.m_target, buf, nbytes, addr); | |
93 | |
94 if (rbytes > 0 && rbytes < nbytes) | |
95 return (set_errbytes(rbytes, nbytes)); | |
96 | |
97 return (rbytes); | |
98 } | |
99 | |
100 ssize_t | |
101 mdb_pwrite(const void *buf, size_t nbytes, physaddr_t addr) | |
102 { | |
103 return (mdb_tgt_pwrite(mdb.m_target, buf, nbytes, addr)); | |
104 } | |
105 | |
106 ssize_t | |
107 mdb_readstr(char *buf, size_t nbytes, uintptr_t addr) | |
108 { | |
109 return (mdb_tgt_readstr(mdb.m_target, MDB_TGT_AS_VIRT, | |
110 buf, nbytes, addr)); | |
111 } | |
112 | |
113 ssize_t | |
114 mdb_writestr(const char *buf, uintptr_t addr) | |
115 { | |
116 return (mdb_tgt_writestr(mdb.m_target, MDB_TGT_AS_VIRT, buf, addr)); | |
117 } | |
118 | |
119 ssize_t | |
120 mdb_readsym(void *buf, size_t nbytes, const char *name) | |
121 { | |
122 ssize_t rbytes = mdb_tgt_readsym(mdb.m_target, MDB_TGT_AS_VIRT, | |
123 buf, nbytes, MDB_TGT_OBJ_EXEC, name); | |
124 | |
125 if (rbytes > 0 && rbytes < nbytes) | |
126 return (set_errbytes(rbytes, nbytes)); | |
127 | |
128 return (rbytes); | |
129 } | |
130 | |
131 ssize_t | |
132 mdb_writesym(const void *buf, size_t nbytes, const char *name) | |
133 { | |
134 return (mdb_tgt_writesym(mdb.m_target, MDB_TGT_AS_VIRT, | |
135 buf, nbytes, MDB_TGT_OBJ_EXEC, name)); | |
136 } | |
137 | |
138 ssize_t | |
139 mdb_readvar(void *buf, const char *name) | |
140 { | |
141 GElf_Sym sym; | |
142 | |
143 if (mdb_tgt_lookup_by_name(mdb.m_target, MDB_TGT_OBJ_EXEC, | |
144 name, &sym, NULL)) | |
145 return (-1); | |
146 | |
147 if (mdb_tgt_vread(mdb.m_target, buf, sym.st_size, | |
148 (uintptr_t)sym.st_value) == sym.st_size) | |
149 return ((ssize_t)sym.st_size); | |
150 | |
151 return (-1); | |
152 } | |
153 | |
154 ssize_t | |
155 mdb_writevar(const void *buf, const char *name) | |
156 { | |
157 GElf_Sym sym; | |
158 | |
159 if (mdb_tgt_lookup_by_name(mdb.m_target, MDB_TGT_OBJ_EXEC, | |
160 name, &sym, NULL)) | |
161 return (-1); | |
162 | |
163 if (mdb_tgt_vwrite(mdb.m_target, buf, sym.st_size, | |
164 (uintptr_t)sym.st_value) == sym.st_size) | |
165 return ((ssize_t)sym.st_size); | |
166 | |
167 return (-1); | |
168 } | |
169 | |
170 int | |
171 mdb_lookup_by_name(const char *name, GElf_Sym *sym) | |
172 { | |
173 return (mdb_lookup_by_obj(MDB_TGT_OBJ_EXEC, name, sym)); | |
174 } | |
175 | |
176 int | |
177 mdb_lookup_by_obj(const char *obj, const char *name, GElf_Sym *sym) | |
178 { | |
179 return (mdb_tgt_lookup_by_name(mdb.m_target, obj, name, sym, NULL)); | |
180 } | |
181 | |
182 int | |
183 mdb_lookup_by_addr(uintptr_t addr, uint_t flags, char *buf, | |
184 size_t nbytes, GElf_Sym *sym) | |
185 { | |
186 return (mdb_tgt_lookup_by_addr(mdb.m_target, addr, flags, | |
187 buf, nbytes, sym, NULL)); | |
188 } | |
189 | |
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6679140 asymmetric alloc/dealloc activity can induce dynamic variable drops
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parents:
4798
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190 int |
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191 mdb_getareg(mdb_tid_t tid, const char *rname, mdb_reg_t *rp) |
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192 { |
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193 return (mdb_tgt_getareg(mdb.m_target, tid, rname, rp)); |
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194 } |
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195 |
0 | 196 u_longlong_t |
197 mdb_strtoull(const char *s) | |
198 { | |
199 int radix = mdb.m_radix; | |
200 | |
201 if (s[0] == '0') { | |
202 switch (s[1]) { | |
203 case 'I': | |
204 case 'i': | |
205 radix = 2; | |
206 s += 2; | |
207 break; | |
208 case 'O': | |
209 case 'o': | |
210 radix = 8; | |
211 s += 2; | |
212 break; | |
213 case 'T': | |
214 case 't': | |
215 radix = 10; | |
216 s += 2; | |
217 break; | |
218 case 'X': | |
219 case 'x': | |
220 radix = 16; | |
221 s += 2; | |
222 break; | |
223 } | |
224 } | |
225 | |
226 return (strtonum(s, radix)); | |
227 } | |
228 | |
229 size_t | |
230 mdb_snprintf(char *buf, size_t nbytes, const char *format, ...) | |
231 { | |
232 va_list alist; | |
233 | |
234 va_start(alist, format); | |
235 nbytes = mdb_iob_vsnprintf(buf, nbytes, format, alist); | |
236 va_end(alist); | |
237 | |
238 return (nbytes); | |
239 } | |
240 | |
241 void | |
242 mdb_printf(const char *format, ...) | |
243 { | |
244 va_list alist; | |
245 | |
246 va_start(alist, format); | |
247 mdb_iob_vprintf(mdb.m_out, format, alist); | |
248 va_end(alist); | |
249 } | |
250 | |
251 void | |
252 mdb_warn(const char *format, ...) | |
253 { | |
254 va_list alist; | |
255 | |
256 va_start(alist, format); | |
257 vwarn(format, alist); | |
258 va_end(alist); | |
259 } | |
260 | |
261 void | |
262 mdb_flush(void) | |
263 { | |
264 mdb_iob_flush(mdb.m_out); | |
265 } | |
266 | |
267 /* | |
268 * Convert an object of len bytes pointed to by srcraw between | |
269 * network-order and host-order and store in dstraw. The length len must | |
270 * be the actual length of the objects pointed to by srcraw and dstraw (or | |
271 * zero) or the results are undefined. srcraw and dstraw may be the same, | |
272 * in which case the object is converted in-place. Note that this routine | |
273 * will convert from host-order to network-order or network-order to | |
274 * host-order, since the conversion is the same in either case. | |
275 */ | |
276 /* ARGSUSED */ | |
277 void | |
278 mdb_nhconvert(void *dstraw, const void *srcraw, size_t len) | |
279 { | |
280 #ifdef _LITTLE_ENDIAN | |
281 uint8_t b1, b2; | |
282 uint8_t *dst, *src; | |
283 size_t i; | |
284 | |
285 dst = (uint8_t *)dstraw; | |
286 src = (uint8_t *)srcraw; | |
287 for (i = 0; i < len / 2; i++) { | |
288 b1 = src[i]; | |
289 b2 = src[len - i - 1]; | |
290 dst[i] = b2; | |
291 dst[len - i - 1] = b1; | |
292 } | |
293 #else | |
294 if (dstraw != srcraw) | |
295 bcopy(srcraw, dstraw, len); | |
296 #endif | |
297 } | |
298 | |
299 | |
300 /* | |
301 * Bit formatting functions: Note the interesting use of UM_GC here to | |
302 * allocate a buffer for the caller which will be automatically freed | |
303 * when the dcmd completes or is forcibly aborted. | |
304 */ | |
305 | |
306 #define NBNB (NBBY / 2) /* number of bits per nibble */ | |
307 #define SETBIT(buf, j, c) { \ | |
308 if (((j) + 1) % (NBNB + 1) == 0) \ | |
309 (buf)[(j)++] = ' '; \ | |
310 (buf)[(j)++] = (c); \ | |
311 } | |
312 | |
313 const char * | |
314 mdb_one_bit(int width, int bit, int on) | |
315 { | |
316 int i, j = 0; | |
317 char *buf; | |
318 | |
319 buf = mdb_zalloc(width + (width / NBNB) + 2, UM_GC | UM_SLEEP); | |
320 | |
321 for (i = --width; i > bit; i--) | |
322 SETBIT(buf, j, '.'); | |
323 | |
324 SETBIT(buf, j, on ? '1' : '0'); | |
325 | |
326 for (i = bit - 1; i >= 0; i--) | |
327 SETBIT(buf, j, '.'); | |
328 | |
329 return (buf); | |
330 } | |
331 | |
332 const char * | |
333 mdb_inval_bits(int width, int start, int stop) | |
334 { | |
335 int i, j = 0; | |
336 char *buf; | |
337 | |
338 buf = mdb_zalloc(width + (width / NBNB) + 2, UM_GC | UM_SLEEP); | |
339 | |
340 for (i = --width; i > stop; i--) | |
341 SETBIT(buf, j, '.'); | |
342 | |
343 for (i = stop; i >= start; i--) | |
344 SETBIT(buf, j, 'x'); | |
345 | |
346 for (; i >= 0; i--) | |
347 SETBIT(buf, j, '.'); | |
348 | |
349 return (buf); | |
350 } | |
351 | |
352 ulong_t | |
353 mdb_inc_indent(ulong_t i) | |
354 { | |
355 if (mdb_iob_getflags(mdb.m_out) & MDB_IOB_INDENT) { | |
356 ulong_t margin = mdb_iob_getmargin(mdb.m_out); | |
357 mdb_iob_margin(mdb.m_out, margin + i); | |
358 return (margin); | |
359 } | |
360 | |
361 mdb_iob_margin(mdb.m_out, i); | |
362 mdb_iob_setflags(mdb.m_out, MDB_IOB_INDENT); | |
363 return (0); | |
364 } | |
365 | |
366 ulong_t | |
367 mdb_dec_indent(ulong_t i) | |
368 { | |
369 if (mdb_iob_getflags(mdb.m_out) & MDB_IOB_INDENT) { | |
370 ulong_t margin = mdb_iob_getmargin(mdb.m_out); | |
371 | |
372 if (margin < i || margin - i == 0) { | |
373 mdb_iob_clrflags(mdb.m_out, MDB_IOB_INDENT); | |
374 mdb_iob_margin(mdb.m_out, MDB_IOB_DEFMARGIN); | |
375 } else | |
376 mdb_iob_margin(mdb.m_out, margin - i); | |
377 | |
378 return (margin); | |
379 } | |
380 | |
381 return (0); | |
382 } | |
383 | |
384 int | |
385 mdb_eval(const char *s) | |
386 { | |
387 mdb_frame_t *ofp = mdb.m_fmark; | |
388 mdb_frame_t *fp = mdb.m_frame; | |
389 int err; | |
390 | |
391 if (s == NULL) | |
392 return (set_errno(EINVAL)); | |
393 | |
394 /* | |
395 * Push m_in down onto the input stack, then set m_in to point to the | |
396 * i/o buffer for our command string, and reset the frame marker. | |
397 * The mdb_run() function returns when the new m_in iob reaches EOF. | |
398 */ | |
399 mdb_iob_stack_push(&fp->f_istk, mdb.m_in, yylineno); | |
400 mdb.m_in = mdb_iob_create(mdb_strio_create(s), MDB_IOB_RDONLY); | |
401 | |
402 mdb.m_fmark = NULL; | |
403 err = mdb_run(); | |
404 mdb.m_fmark = ofp; | |
405 | |
406 /* | |
407 * Now pop the old standard input stream and restore mdb.m_in and | |
408 * the parser's saved current line number. | |
409 */ | |
410 mdb.m_in = mdb_iob_stack_pop(&fp->f_istk); | |
411 yylineno = mdb_iob_lineno(mdb.m_in); | |
412 | |
413 /* | |
414 * If mdb_run() returned an error, propagate this backward | |
415 * up the stack of debugger environment frames. | |
416 */ | |
417 if (MDB_ERR_IS_FATAL(err)) | |
418 longjmp(fp->f_pcb, err); | |
419 | |
420 if (err == MDB_ERR_PAGER || err == MDB_ERR_SIGINT) | |
421 return (set_errno(EMDB_CANCEL)); | |
422 | |
423 if (err != 0) | |
424 return (set_errno(EMDB_EVAL)); | |
425 | |
426 return (0); | |
427 } | |
428 | |
429 void | |
430 mdb_set_dot(uintmax_t addr) | |
431 { | |
432 mdb_nv_set_value(mdb.m_dot, addr); | |
433 mdb.m_incr = 0; | |
434 } | |
435 | |
436 uintmax_t | |
437 mdb_get_dot(void) | |
438 { | |
439 return (mdb_nv_get_value(mdb.m_dot)); | |
440 } | |
441 | |
442 static int | |
443 walk_step(mdb_wcb_t *wcb) | |
444 { | |
445 mdb_wcb_t *nwcb = wcb->w_lyr_head; | |
446 int status; | |
447 | |
448 /* | |
449 * If the control block has no layers, we just invoke the walker's | |
450 * step function and return status indicating whether to continue | |
451 * or stop. If the control block has layers, we need to invoke | |
452 * ourself recursively for the next layer, until eventually we | |
453 * percolate down to an unlayered walk. | |
454 */ | |
455 if (nwcb == NULL) | |
456 return (wcb->w_walker->iwlk_step(&wcb->w_state)); | |
457 | |
458 if ((status = walk_step(nwcb)) != WALK_NEXT) { | |
459 wcb->w_lyr_head = nwcb->w_lyr_link; | |
460 nwcb->w_lyr_link = NULL; | |
461 mdb_wcb_destroy(nwcb); | |
462 } | |
463 | |
464 if (status == WALK_DONE && wcb->w_lyr_head != NULL) | |
465 return (WALK_NEXT); | |
466 | |
467 return (status); | |
468 } | |
469 | |
470 static int | |
471 walk_common(mdb_wcb_t *wcb) | |
472 { | |
473 int status, rval = 0; | |
474 mdb_frame_t *pfp; | |
475 | |
476 /* | |
477 * Enter the control block in the active list so that mdb can clean | |
478 * up after it in case we abort out of the current command. | |
479 */ | |
480 if ((pfp = mdb_list_prev(mdb.m_frame)) != NULL && pfp->f_pcmd != NULL) | |
481 mdb_wcb_insert(wcb, pfp); | |
482 else | |
483 mdb_wcb_insert(wcb, mdb.m_frame); | |
484 | |
485 /* | |
486 * The per-walk constructor performs private buffer initialization | |
487 * and locates whatever symbols are necessary. | |
488 */ | |
489 if ((status = wcb->w_walker->iwlk_init(&wcb->w_state)) != WALK_NEXT) { | |
490 if (status != WALK_DONE) | |
491 rval = set_errno(EMDB_WALKINIT); | |
492 goto done; | |
493 } | |
494 | |
495 /* | |
496 * Mark wcb to indicate that walk_init has been called (which means | |
497 * we can call walk_fini if the walk is aborted at this point). | |
498 */ | |
499 wcb->w_inited = TRUE; | |
500 | |
501 while (walk_step(wcb) == WALK_NEXT) | |
502 continue; | |
503 done: | |
504 if ((pfp = mdb_list_prev(mdb.m_frame)) != NULL && pfp->f_pcmd != NULL) | |
505 mdb_wcb_delete(wcb, pfp); | |
506 else | |
507 mdb_wcb_delete(wcb, mdb.m_frame); | |
508 | |
509 mdb_wcb_destroy(wcb); | |
510 return (rval); | |
511 } | |
512 | |
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513 typedef struct pwalk_step { |
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514 mdb_walk_cb_t ps_cb; |
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515 void *ps_private; |
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516 } pwalk_step_t; |
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517 |
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518 static int |
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519 pwalk_step(uintptr_t addr, const void *data, void *private) |
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520 { |
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521 pwalk_step_t *psp = private; |
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522 int ret; |
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523 |
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524 mdb.m_frame->f_cbactive = B_TRUE; |
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525 ret = psp->ps_cb(addr, data, psp->ps_private); |
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526 mdb.m_frame->f_cbactive = B_FALSE; |
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527 |
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528 return (ret); |
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529 } |
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530 |
0 | 531 int |
13937
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532 mdb_pwalk(const char *name, mdb_walk_cb_t func, void *private, uintptr_t addr) |
0 | 533 { |
534 mdb_iwalker_t *iwp = mdb_walker_lookup(name); | |
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535 pwalk_step_t p; |
0 | 536 |
537 if (func == NULL) | |
538 return (set_errno(EINVAL)); | |
539 | |
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540 p.ps_cb = func; |
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541 p.ps_private = private; |
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542 |
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543 if (iwp != NULL) { |
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544 int ret; |
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545 int cbactive = mdb.m_frame->f_cbactive; |
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546 mdb.m_frame->f_cbactive = B_FALSE; |
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547 ret = walk_common(mdb_wcb_create(iwp, pwalk_step, &p, addr)); |
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548 mdb.m_frame->f_cbactive = cbactive; |
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549 return (ret); |
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550 } |
0 | 551 |
552 return (-1); /* errno is set for us */ | |
553 } | |
554 | |
555 int | |
556 mdb_walk(const char *name, mdb_walk_cb_t func, void *data) | |
557 { | |
558 return (mdb_pwalk(name, func, data, NULL)); | |
559 } | |
560 | |
561 /*ARGSUSED*/ | |
562 static int | |
563 walk_dcmd(uintptr_t addr, const void *ignored, dcmd_walk_arg_t *dwp) | |
564 { | |
565 int status = mdb_call_idcmd(dwp->dw_dcmd, addr, 1, dwp->dw_flags, | |
566 &dwp->dw_argv, NULL, NULL); | |
567 | |
568 if (status == DCMD_USAGE || status == DCMD_ABORT) | |
569 return (WALK_ERR); | |
570 | |
571 dwp->dw_flags &= ~DCMD_LOOPFIRST; | |
572 return (WALK_NEXT); | |
573 } | |
574 | |
575 int | |
576 mdb_pwalk_dcmd(const char *wname, const char *dcname, | |
577 int argc, const mdb_arg_t *argv, uintptr_t addr) | |
578 { | |
579 mdb_argvec_t args; | |
580 dcmd_walk_arg_t dw; | |
581 mdb_iwalker_t *iwp; | |
582 mdb_wcb_t *wcb; | |
583 int status; | |
584 | |
585 if (wname == NULL || dcname == NULL) | |
586 return (set_errno(EINVAL)); | |
587 | |
588 if ((dw.dw_dcmd = mdb_dcmd_lookup(dcname)) == NULL) | |
589 return (-1); /* errno is set for us */ | |
590 | |
591 if ((iwp = mdb_walker_lookup(wname)) == NULL) | |
592 return (-1); /* errno is set for us */ | |
593 | |
594 args.a_data = (mdb_arg_t *)argv; | |
595 args.a_nelems = args.a_size = argc; | |
596 | |
597 mdb_argvec_create(&dw.dw_argv); | |
598 mdb_argvec_copy(&dw.dw_argv, &args); | |
599 dw.dw_flags = DCMD_LOOP | DCMD_LOOPFIRST | DCMD_ADDRSPEC; | |
600 | |
601 wcb = mdb_wcb_create(iwp, (mdb_walk_cb_t)walk_dcmd, &dw, addr); | |
602 status = walk_common(wcb); | |
603 | |
604 mdb_argvec_zero(&dw.dw_argv); | |
605 mdb_argvec_destroy(&dw.dw_argv); | |
606 | |
607 return (status); | |
608 } | |
609 | |
610 int | |
611 mdb_walk_dcmd(const char *wname, const char *dcname, | |
612 int argc, const mdb_arg_t *argv) | |
613 { | |
614 return (mdb_pwalk_dcmd(wname, dcname, argc, argv, NULL)); | |
615 } | |
616 | |
617 /*ARGSUSED*/ | |
618 static int | |
619 layered_walk_step(uintptr_t addr, const void *data, mdb_wcb_t *wcb) | |
620 { | |
621 /* | |
622 * Prior to calling the top-level walker's step function, reset its | |
623 * mdb_walk_state_t walk_addr and walk_layer members to refer to the | |
624 * target virtual address and data buffer of the underlying object. | |
625 */ | |
626 wcb->w_state.walk_addr = addr; | |
627 wcb->w_state.walk_layer = data; | |
628 | |
629 return (wcb->w_walker->iwlk_step(&wcb->w_state)); | |
630 } | |
631 | |
632 int | |
633 mdb_layered_walk(const char *wname, mdb_walk_state_t *wsp) | |
634 { | |
635 mdb_wcb_t *cwcb, *wcb; | |
636 mdb_iwalker_t *iwp; | |
637 | |
638 if (wname == NULL || wsp == NULL) | |
639 return (set_errno(EINVAL)); | |
640 | |
641 if ((iwp = mdb_walker_lookup(wname)) == NULL) | |
642 return (-1); /* errno is set for us */ | |
643 | |
644 if ((cwcb = mdb_wcb_from_state(wsp)) == NULL) | |
645 return (set_errno(EMDB_BADWCB)); | |
646 | |
647 if (cwcb->w_walker == iwp) | |
648 return (set_errno(EMDB_WALKLOOP)); | |
649 | |
650 wcb = mdb_wcb_create(iwp, (mdb_walk_cb_t)layered_walk_step, | |
651 cwcb, wsp->walk_addr); | |
652 | |
653 if (iwp->iwlk_init(&wcb->w_state) != WALK_NEXT) { | |
654 mdb_wcb_destroy(wcb); | |
655 return (set_errno(EMDB_WALKINIT)); | |
656 } | |
657 | |
658 wcb->w_inited = TRUE; | |
659 | |
660 mdb_dprintf(MDB_DBG_WALK, "added %s`%s as %s`%s layer\n", | |
661 iwp->iwlk_modp->mod_name, iwp->iwlk_name, | |
662 cwcb->w_walker->iwlk_modp->mod_name, cwcb->w_walker->iwlk_name); | |
663 | |
664 if (cwcb->w_lyr_head != NULL) { | |
665 for (cwcb = cwcb->w_lyr_head; cwcb->w_lyr_link != NULL; ) | |
666 cwcb = cwcb->w_lyr_link; | |
667 cwcb->w_lyr_link = wcb; | |
668 } else | |
669 cwcb->w_lyr_head = wcb; | |
670 | |
671 return (0); | |
672 } | |
673 | |
674 int | |
675 mdb_call_dcmd(const char *name, uintptr_t dot, uint_t flags, | |
676 int argc, const mdb_arg_t *argv) | |
677 { | |
678 mdb_idcmd_t *idcp; | |
679 mdb_argvec_t args; | |
680 int status; | |
681 | |
682 if (name == NULL || argc < 0) | |
683 return (set_errno(EINVAL)); | |
684 | |
685 if ((idcp = mdb_dcmd_lookup(name)) == NULL) | |
686 return (-1); /* errno is set for us */ | |
687 | |
688 args.a_data = (mdb_arg_t *)argv; | |
689 args.a_nelems = args.a_size = argc; | |
690 status = mdb_call_idcmd(idcp, dot, 1, flags, &args, NULL, NULL); | |
691 | |
692 if (status == DCMD_ERR || status == DCMD_ABORT) | |
693 return (set_errno(EMDB_DCFAIL)); | |
694 | |
695 if (status == DCMD_USAGE) | |
696 return (set_errno(EMDB_DCUSAGE)); | |
697 | |
698 return (0); | |
699 } | |
700 | |
701 int | |
702 mdb_add_walker(const mdb_walker_t *wp) | |
703 { | |
704 mdb_module_t *mp; | |
705 | |
706 if (mdb.m_lmod == NULL) { | |
707 mdb_cmd_t *cp = mdb.m_frame->f_cp; | |
708 mp = cp->c_dcmd->idc_modp; | |
709 } else | |
710 mp = mdb.m_lmod; | |
711 | |
712 return (mdb_module_add_walker(mp, wp, 0)); | |
713 } | |
714 | |
715 int | |
716 mdb_remove_walker(const char *name) | |
717 { | |
718 mdb_module_t *mp; | |
719 | |
720 if (mdb.m_lmod == NULL) { | |
721 mdb_cmd_t *cp = mdb.m_frame->f_cp; | |
722 mp = cp->c_dcmd->idc_modp; | |
723 } else | |
724 mp = mdb.m_lmod; | |
725 | |
726 return (mdb_module_remove_walker(mp, name)); | |
727 } | |
728 | |
729 void | |
730 mdb_get_pipe(mdb_pipe_t *p) | |
731 { | |
732 mdb_cmd_t *cp = mdb.m_frame->f_cp; | |
733 mdb_addrvec_t *adp = &cp->c_addrv; | |
734 | |
735 if (p == NULL) { | |
736 warn("dcmd failure: mdb_get_pipe invoked with NULL pointer\n"); | |
737 longjmp(mdb.m_frame->f_pcb, MDB_ERR_API); | |
738 } | |
739 | |
740 if (adp->ad_nelems != 0) { | |
741 ASSERT(adp->ad_ndx != 0); | |
742 p->pipe_data = &adp->ad_data[adp->ad_ndx - 1]; | |
743 p->pipe_len = adp->ad_nelems - adp->ad_ndx + 1; | |
744 adp->ad_ndx = adp->ad_nelems; | |
745 } else { | |
746 p->pipe_data = NULL; | |
747 p->pipe_len = 0; | |
748 } | |
749 } | |
750 | |
751 void | |
752 mdb_set_pipe(const mdb_pipe_t *p) | |
753 { | |
754 mdb_cmd_t *cp = mdb.m_frame->f_pcmd; | |
755 | |
756 if (p == NULL) { | |
757 warn("dcmd failure: mdb_set_pipe invoked with NULL pointer\n"); | |
758 longjmp(mdb.m_frame->f_pcb, MDB_ERR_API); | |
759 } | |
760 | |
761 if (cp != NULL) { | |
762 size_t nbytes = sizeof (uintptr_t) * p->pipe_len; | |
763 | |
3277 | 764 mdb_cmd_reset(cp); |
0 | 765 cp->c_addrv.ad_data = mdb_alloc(nbytes, UM_SLEEP); |
766 bcopy(p->pipe_data, cp->c_addrv.ad_data, nbytes); | |
767 cp->c_addrv.ad_nelems = p->pipe_len; | |
768 cp->c_addrv.ad_size = p->pipe_len; | |
769 } | |
770 } | |
771 | |
772 ssize_t | |
773 mdb_get_xdata(const char *name, void *buf, size_t nbytes) | |
774 { | |
775 return (mdb_tgt_getxdata(mdb.m_target, name, buf, nbytes)); | |
776 } | |
777 | |
778 /* | |
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779 * Private callback structure for implementing mdb_object_iter, below. |
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780 */ |
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781 typedef struct { |
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782 mdb_object_cb_t oi_cb; |
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783 void *oi_arg; |
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784 int oi_rval; |
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785 } object_iter_arg_t; |
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786 |
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787 /*ARGSUSED*/ |
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788 static int |
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789 mdb_object_cb(void *data, const mdb_map_t *map, const char *fullname) |
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790 { |
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791 object_iter_arg_t *arg = data; |
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792 mdb_object_t obj; |
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793 |
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794 if (arg->oi_rval != 0) |
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795 return (0); |
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796 |
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797 bzero(&obj, sizeof (obj)); |
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798 obj.obj_base = map->map_base; |
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799 obj.obj_name = strbasename(map->map_name); |
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800 obj.obj_size = map->map_size; |
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801 obj.obj_fullname = fullname; |
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802 |
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803 arg->oi_rval = arg->oi_cb(&obj, arg->oi_arg); |
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804 |
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805 return (0); |
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806 } |
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807 |
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808 int |
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809 mdb_object_iter(mdb_object_cb_t cb, void *data) |
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810 { |
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811 object_iter_arg_t arg; |
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812 |
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813 arg.oi_cb = cb; |
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814 arg.oi_arg = data; |
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815 arg.oi_rval = 0; |
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816 |
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817 if (mdb_tgt_object_iter(mdb.m_target, mdb_object_cb, &arg) != 0) |
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818 return (-1); |
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819 |
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820 return (arg.oi_rval); |
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821 } |
3bb859a7330c
6679140 asymmetric alloc/dealloc activity can induce dynamic variable drops
Bryan Cantrill <Bryan.Cantrill@Sun.COM>
parents:
4798
diff
changeset
|
822 |
3bb859a7330c
6679140 asymmetric alloc/dealloc activity can induce dynamic variable drops
Bryan Cantrill <Bryan.Cantrill@Sun.COM>
parents:
4798
diff
changeset
|
823 /* |
0 | 824 * Private structure and function for implementing mdb_dumpptr on top |
825 * of mdb_dump_internal | |
826 */ | |
827 typedef struct dptrdat { | |
828 mdb_dumpptr_cb_t func; | |
829 void *arg; | |
830 } dptrdat_t; | |
831 | |
832 static ssize_t | |
833 mdb_dump_aux_ptr(void *buf, size_t nbyte, uint64_t offset, void *arg) | |
834 { | |
835 dptrdat_t *dat = arg; | |
836 | |
837 return (dat->func(buf, nbyte, offset, dat->arg)); | |
838 } | |
839 | |
840 /* | |
841 * Private structure and function for handling callbacks which return | |
842 * EMDB_PARTIAL | |
843 */ | |
844 typedef struct d64dat { | |
845 mdb_dump64_cb_t func; | |
846 void *arg; | |
847 } d64dat_t; | |
848 | |
849 static ssize_t | |
850 mdb_dump_aux_partial(void *buf, size_t nbyte, uint64_t offset, void *arg) | |
851 { | |
852 d64dat_t *dat = arg; | |
853 int result; | |
854 int count; | |
855 | |
856 result = dat->func(buf, nbyte, offset, dat->arg); | |
857 if (result == -1 && errno == EMDB_PARTIAL) { | |
858 count = 0; | |
859 do { | |
860 result = dat->func((char *)buf + count, 1, | |
861 offset + count, dat->arg); | |
862 if (result == 1) | |
863 count++; | |
864 } while (count < nbyte && result == 1); | |
865 if (count) | |
866 result = count; | |
867 } | |
868 | |
869 return (result); | |
870 } | |
871 | |
872 int | |
873 mdb_dumpptr(uintptr_t addr, size_t len, uint_t flags, mdb_dumpptr_cb_t fp, | |
874 void *arg) | |
875 { | |
876 dptrdat_t dat; | |
877 d64dat_t dat64; | |
878 | |
879 dat.func = fp; | |
880 dat.arg = arg; | |
881 dat64.func = mdb_dump_aux_ptr; | |
882 dat64.arg = &dat; | |
883 return (mdb_dump_internal(addr, len, flags, mdb_dump_aux_partial, | |
884 &dat64, sizeof (uintptr_t))); | |
885 } | |
886 | |
887 int | |
888 mdb_dump64(uint64_t addr, uint64_t len, uint_t flags, mdb_dump64_cb_t fp, | |
889 void *arg) | |
890 { | |
891 d64dat_t dat64; | |
892 | |
893 dat64.func = fp; | |
894 dat64.arg = arg; | |
895 return (mdb_dump_internal(addr, len, flags, mdb_dump_aux_partial, | |
896 &dat64, sizeof (uint64_t))); | |
897 } | |
898 | |
899 int | |
900 mdb_get_state(void) | |
901 { | |
902 mdb_tgt_status_t ts; | |
903 | |
904 (void) mdb_tgt_status(mdb.m_target, &ts); | |
905 | |
906 return (ts.st_state); | |
907 } | |
908 | |
909 void * | |
910 mdb_callback_add(int class, mdb_callback_f fp, void *arg) | |
911 { | |
912 mdb_module_t *m; | |
913 | |
914 if (class != MDB_CALLBACK_STCHG && class != MDB_CALLBACK_PROMPT) { | |
915 (void) set_errno(EINVAL); | |
916 return (NULL); | |
917 } | |
918 | |
919 if (mdb.m_lmod != NULL) | |
920 m = mdb.m_lmod; | |
921 else | |
922 m = mdb.m_frame->f_cp->c_dcmd->idc_modp; | |
923 | |
924 return (mdb_callb_add(m, class, fp, arg)); | |
925 } | |
926 | |
927 void | |
928 mdb_callback_remove(void *hdl) | |
929 { | |
930 mdb_callb_remove(hdl); | |
931 } |