Mercurial > illumos > illumos-gate
annotate usr/src/cmd/mdb/common/mdb/mdb_modapi.c @ 14006:09f0146de94b
3650 mdb global symbol tab completion should find all symbols
3651 mdb_readsym() and friends should find all symbols
3652 convert ::spa and ::spa_vdevs to use mdb_ctf_vread()
3653 userland ::whatis always complains about "umem_internal_arena" symbol
Reviewed by: Henrik Mattson <henrik.mattson@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Approved by: Dan McDonald <danmcd@nexenta.com>
| author | Matthew Ahrens <mahrens@delphix.com> |
|---|---|
| date | Mon, 08 Apr 2013 13:11:12 -0800 |
| parents | 6b4f289e7094 |
| children | 20cdcfea8015 |
| 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. |
|
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24 * Copyright (c) 2013 by Delphix. All rights reserved. |
| 0 | 25 */ |
| 26 | |
| 27 #include <mdb/mdb_modapi.h> | |
| 28 #include <mdb/mdb_module.h> | |
| 29 #include <mdb/mdb_string.h> | |
| 30 #include <mdb/mdb_debug.h> | |
| 31 #include <mdb/mdb_callb.h> | |
| 32 #include <mdb/mdb_dump.h> | |
| 33 #include <mdb/mdb_err.h> | |
| 34 #include <mdb/mdb_io.h> | |
| 35 #include <mdb/mdb_lex.h> | |
| 36 #include <mdb/mdb_frame.h> | |
| 37 #include <mdb/mdb.h> | |
| 38 | |
| 39 /* | |
| 40 * Private callback structure for implementing mdb_walk_dcmd, below. | |
| 41 */ | |
| 42 typedef struct { | |
| 43 mdb_idcmd_t *dw_dcmd; | |
| 44 mdb_argvec_t dw_argv; | |
| 45 uint_t dw_flags; | |
| 46 } dcmd_walk_arg_t; | |
| 47 | |
| 48 /* | |
| 49 * Global properties which modules are allowed to look at. These are | |
| 50 * re-initialized by the target activation callbacks. | |
| 51 */ | |
| 52 int mdb_prop_postmortem = FALSE; /* Are we examining a dump? */ | |
| 53 int mdb_prop_kernel = FALSE; /* Are we examining a kernel? */ | |
| 54 int mdb_prop_datamodel = 0; /* Data model (see mdb_target_impl.h) */ | |
| 55 | |
| 56 ssize_t | |
| 57 mdb_vread(void *buf, size_t nbytes, uintptr_t addr) | |
| 58 { | |
| 59 ssize_t rbytes = mdb_tgt_vread(mdb.m_target, buf, nbytes, addr); | |
| 60 | |
| 61 if (rbytes > 0 && rbytes < nbytes) | |
| 62 return (set_errbytes(rbytes, nbytes)); | |
| 63 | |
| 64 return (rbytes); | |
| 65 } | |
| 66 | |
| 67 ssize_t | |
| 68 mdb_vwrite(const void *buf, size_t nbytes, uintptr_t addr) | |
| 69 { | |
| 70 return (mdb_tgt_vwrite(mdb.m_target, buf, nbytes, addr)); | |
| 71 } | |
| 72 | |
| 73 ssize_t | |
| 74 mdb_fread(void *buf, size_t nbytes, uintptr_t addr) | |
| 75 { | |
| 76 ssize_t rbytes = mdb_tgt_fread(mdb.m_target, buf, nbytes, addr); | |
| 77 | |
| 78 if (rbytes > 0 && rbytes < nbytes) | |
| 79 return (set_errbytes(rbytes, nbytes)); | |
| 80 | |
| 81 return (rbytes); | |
| 82 } | |
| 83 | |
| 84 ssize_t | |
| 85 mdb_fwrite(const void *buf, size_t nbytes, uintptr_t addr) | |
| 86 { | |
| 87 return (mdb_tgt_fwrite(mdb.m_target, buf, nbytes, addr)); | |
| 88 } | |
| 89 | |
| 90 ssize_t | |
| 91 mdb_pread(void *buf, size_t nbytes, physaddr_t addr) | |
| 92 { | |
| 93 ssize_t rbytes = mdb_tgt_pread(mdb.m_target, buf, nbytes, addr); | |
| 94 | |
| 95 if (rbytes > 0 && rbytes < nbytes) | |
| 96 return (set_errbytes(rbytes, nbytes)); | |
| 97 | |
| 98 return (rbytes); | |
| 99 } | |
| 100 | |
| 101 ssize_t | |
| 102 mdb_pwrite(const void *buf, size_t nbytes, physaddr_t addr) | |
| 103 { | |
| 104 return (mdb_tgt_pwrite(mdb.m_target, buf, nbytes, addr)); | |
| 105 } | |
| 106 | |
| 107 ssize_t | |
| 108 mdb_readstr(char *buf, size_t nbytes, uintptr_t addr) | |
| 109 { | |
| 110 return (mdb_tgt_readstr(mdb.m_target, MDB_TGT_AS_VIRT, | |
| 111 buf, nbytes, addr)); | |
| 112 } | |
| 113 | |
| 114 ssize_t | |
| 115 mdb_writestr(const char *buf, uintptr_t addr) | |
| 116 { | |
| 117 return (mdb_tgt_writestr(mdb.m_target, MDB_TGT_AS_VIRT, buf, addr)); | |
| 118 } | |
| 119 | |
| 120 ssize_t | |
| 121 mdb_readsym(void *buf, size_t nbytes, const char *name) | |
| 122 { | |
| 123 ssize_t rbytes = mdb_tgt_readsym(mdb.m_target, MDB_TGT_AS_VIRT, | |
|
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3650 mdb global symbol tab completion should find all symbols
Matthew Ahrens <mahrens@delphix.com>
parents:
13937
diff
changeset
|
124 buf, nbytes, MDB_TGT_OBJ_EVERY, name); |
| 0 | 125 |
| 126 if (rbytes > 0 && rbytes < nbytes) | |
| 127 return (set_errbytes(rbytes, nbytes)); | |
| 128 | |
| 129 return (rbytes); | |
| 130 } | |
| 131 | |
| 132 ssize_t | |
| 133 mdb_writesym(const void *buf, size_t nbytes, const char *name) | |
| 134 { | |
| 135 return (mdb_tgt_writesym(mdb.m_target, MDB_TGT_AS_VIRT, | |
|
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09f0146de94b
3650 mdb global symbol tab completion should find all symbols
Matthew Ahrens <mahrens@delphix.com>
parents:
13937
diff
changeset
|
136 buf, nbytes, MDB_TGT_OBJ_EVERY, name)); |
| 0 | 137 } |
| 138 | |
| 139 ssize_t | |
| 140 mdb_readvar(void *buf, const char *name) | |
| 141 { | |
| 142 GElf_Sym sym; | |
| 143 | |
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3650 mdb global symbol tab completion should find all symbols
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parents:
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diff
changeset
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144 if (mdb_tgt_lookup_by_name(mdb.m_target, MDB_TGT_OBJ_EVERY, |
| 0 | 145 name, &sym, NULL)) |
| 146 return (-1); | |
| 147 | |
| 148 if (mdb_tgt_vread(mdb.m_target, buf, sym.st_size, | |
| 149 (uintptr_t)sym.st_value) == sym.st_size) | |
| 150 return ((ssize_t)sym.st_size); | |
| 151 | |
| 152 return (-1); | |
| 153 } | |
| 154 | |
| 155 ssize_t | |
| 156 mdb_writevar(const void *buf, const char *name) | |
| 157 { | |
| 158 GElf_Sym sym; | |
| 159 | |
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3650 mdb global symbol tab completion should find all symbols
Matthew Ahrens <mahrens@delphix.com>
parents:
13937
diff
changeset
|
160 if (mdb_tgt_lookup_by_name(mdb.m_target, MDB_TGT_OBJ_EVERY, |
| 0 | 161 name, &sym, NULL)) |
| 162 return (-1); | |
| 163 | |
| 164 if (mdb_tgt_vwrite(mdb.m_target, buf, sym.st_size, | |
| 165 (uintptr_t)sym.st_value) == sym.st_size) | |
| 166 return ((ssize_t)sym.st_size); | |
| 167 | |
| 168 return (-1); | |
| 169 } | |
| 170 | |
| 171 int | |
| 172 mdb_lookup_by_name(const char *name, GElf_Sym *sym) | |
| 173 { | |
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3650 mdb global symbol tab completion should find all symbols
Matthew Ahrens <mahrens@delphix.com>
parents:
13937
diff
changeset
|
174 return (mdb_lookup_by_obj(MDB_TGT_OBJ_EVERY, name, sym)); |
| 0 | 175 } |
| 176 | |
| 177 int | |
| 178 mdb_lookup_by_obj(const char *obj, const char *name, GElf_Sym *sym) | |
| 179 { | |
| 180 return (mdb_tgt_lookup_by_name(mdb.m_target, obj, name, sym, NULL)); | |
| 181 } | |
| 182 | |
| 183 int | |
| 184 mdb_lookup_by_addr(uintptr_t addr, uint_t flags, char *buf, | |
| 185 size_t nbytes, GElf_Sym *sym) | |
| 186 { | |
| 187 return (mdb_tgt_lookup_by_addr(mdb.m_target, addr, flags, | |
| 188 buf, nbytes, sym, NULL)); | |
| 189 } | |
| 190 | |
|
12914
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6679140 asymmetric alloc/dealloc activity can induce dynamic variable drops
Bryan Cantrill <Bryan.Cantrill@Sun.COM>
parents:
4798
diff
changeset
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191 int |
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3bb859a7330c
6679140 asymmetric alloc/dealloc activity can induce dynamic variable drops
Bryan Cantrill <Bryan.Cantrill@Sun.COM>
parents:
4798
diff
changeset
|
192 mdb_getareg(mdb_tid_t tid, const char *rname, mdb_reg_t *rp) |
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6679140 asymmetric alloc/dealloc activity can induce dynamic variable drops
Bryan Cantrill <Bryan.Cantrill@Sun.COM>
parents:
4798
diff
changeset
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193 { |
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3bb859a7330c
6679140 asymmetric alloc/dealloc activity can induce dynamic variable drops
Bryan Cantrill <Bryan.Cantrill@Sun.COM>
parents:
4798
diff
changeset
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194 return (mdb_tgt_getareg(mdb.m_target, tid, rname, rp)); |
|
3bb859a7330c
6679140 asymmetric alloc/dealloc activity can induce dynamic variable drops
Bryan Cantrill <Bryan.Cantrill@Sun.COM>
parents:
4798
diff
changeset
|
195 } |
|
3bb859a7330c
6679140 asymmetric alloc/dealloc activity can induce dynamic variable drops
Bryan Cantrill <Bryan.Cantrill@Sun.COM>
parents:
4798
diff
changeset
|
196 |
| 0 | 197 u_longlong_t |
| 198 mdb_strtoull(const char *s) | |
| 199 { | |
| 200 int radix = mdb.m_radix; | |
| 201 | |
| 202 if (s[0] == '0') { | |
| 203 switch (s[1]) { | |
| 204 case 'I': | |
| 205 case 'i': | |
| 206 radix = 2; | |
| 207 s += 2; | |
| 208 break; | |
| 209 case 'O': | |
| 210 case 'o': | |
| 211 radix = 8; | |
| 212 s += 2; | |
| 213 break; | |
| 214 case 'T': | |
| 215 case 't': | |
| 216 radix = 10; | |
| 217 s += 2; | |
| 218 break; | |
| 219 case 'X': | |
| 220 case 'x': | |
| 221 radix = 16; | |
| 222 s += 2; | |
| 223 break; | |
| 224 } | |
| 225 } | |
| 226 | |
| 227 return (strtonum(s, radix)); | |
| 228 } | |
| 229 | |
| 230 size_t | |
| 231 mdb_snprintf(char *buf, size_t nbytes, const char *format, ...) | |
| 232 { | |
| 233 va_list alist; | |
| 234 | |
| 235 va_start(alist, format); | |
| 236 nbytes = mdb_iob_vsnprintf(buf, nbytes, format, alist); | |
| 237 va_end(alist); | |
| 238 | |
| 239 return (nbytes); | |
| 240 } | |
| 241 | |
| 242 void | |
| 243 mdb_printf(const char *format, ...) | |
| 244 { | |
| 245 va_list alist; | |
| 246 | |
| 247 va_start(alist, format); | |
| 248 mdb_iob_vprintf(mdb.m_out, format, alist); | |
| 249 va_end(alist); | |
| 250 } | |
| 251 | |
| 252 void | |
| 253 mdb_warn(const char *format, ...) | |
| 254 { | |
| 255 va_list alist; | |
| 256 | |
| 257 va_start(alist, format); | |
| 258 vwarn(format, alist); | |
| 259 va_end(alist); | |
| 260 } | |
| 261 | |
| 262 void | |
| 263 mdb_flush(void) | |
| 264 { | |
| 265 mdb_iob_flush(mdb.m_out); | |
| 266 } | |
| 267 | |
| 268 /* | |
| 269 * Convert an object of len bytes pointed to by srcraw between | |
| 270 * network-order and host-order and store in dstraw. The length len must | |
| 271 * be the actual length of the objects pointed to by srcraw and dstraw (or | |
| 272 * zero) or the results are undefined. srcraw and dstraw may be the same, | |
| 273 * in which case the object is converted in-place. Note that this routine | |
| 274 * will convert from host-order to network-order or network-order to | |
| 275 * host-order, since the conversion is the same in either case. | |
| 276 */ | |
| 277 /* ARGSUSED */ | |
| 278 void | |
| 279 mdb_nhconvert(void *dstraw, const void *srcraw, size_t len) | |
| 280 { | |
| 281 #ifdef _LITTLE_ENDIAN | |
| 282 uint8_t b1, b2; | |
| 283 uint8_t *dst, *src; | |
| 284 size_t i; | |
| 285 | |
| 286 dst = (uint8_t *)dstraw; | |
| 287 src = (uint8_t *)srcraw; | |
| 288 for (i = 0; i < len / 2; i++) { | |
| 289 b1 = src[i]; | |
| 290 b2 = src[len - i - 1]; | |
| 291 dst[i] = b2; | |
| 292 dst[len - i - 1] = b1; | |
| 293 } | |
| 294 #else | |
| 295 if (dstraw != srcraw) | |
| 296 bcopy(srcraw, dstraw, len); | |
| 297 #endif | |
| 298 } | |
| 299 | |
| 300 | |
| 301 /* | |
| 302 * Bit formatting functions: Note the interesting use of UM_GC here to | |
| 303 * allocate a buffer for the caller which will be automatically freed | |
| 304 * when the dcmd completes or is forcibly aborted. | |
| 305 */ | |
| 306 | |
| 307 #define NBNB (NBBY / 2) /* number of bits per nibble */ | |
| 308 #define SETBIT(buf, j, c) { \ | |
| 309 if (((j) + 1) % (NBNB + 1) == 0) \ | |
| 310 (buf)[(j)++] = ' '; \ | |
| 311 (buf)[(j)++] = (c); \ | |
| 312 } | |
| 313 | |
| 314 const char * | |
| 315 mdb_one_bit(int width, int bit, int on) | |
| 316 { | |
| 317 int i, j = 0; | |
| 318 char *buf; | |
| 319 | |
| 320 buf = mdb_zalloc(width + (width / NBNB) + 2, UM_GC | UM_SLEEP); | |
| 321 | |
| 322 for (i = --width; i > bit; i--) | |
| 323 SETBIT(buf, j, '.'); | |
| 324 | |
| 325 SETBIT(buf, j, on ? '1' : '0'); | |
| 326 | |
| 327 for (i = bit - 1; i >= 0; i--) | |
| 328 SETBIT(buf, j, '.'); | |
| 329 | |
| 330 return (buf); | |
| 331 } | |
| 332 | |
| 333 const char * | |
| 334 mdb_inval_bits(int width, int start, int stop) | |
| 335 { | |
| 336 int i, j = 0; | |
| 337 char *buf; | |
| 338 | |
| 339 buf = mdb_zalloc(width + (width / NBNB) + 2, UM_GC | UM_SLEEP); | |
| 340 | |
| 341 for (i = --width; i > stop; i--) | |
| 342 SETBIT(buf, j, '.'); | |
| 343 | |
| 344 for (i = stop; i >= start; i--) | |
| 345 SETBIT(buf, j, 'x'); | |
| 346 | |
| 347 for (; i >= 0; i--) | |
| 348 SETBIT(buf, j, '.'); | |
| 349 | |
| 350 return (buf); | |
| 351 } | |
| 352 | |
| 353 ulong_t | |
| 354 mdb_inc_indent(ulong_t i) | |
| 355 { | |
| 356 if (mdb_iob_getflags(mdb.m_out) & MDB_IOB_INDENT) { | |
| 357 ulong_t margin = mdb_iob_getmargin(mdb.m_out); | |
| 358 mdb_iob_margin(mdb.m_out, margin + i); | |
| 359 return (margin); | |
| 360 } | |
| 361 | |
| 362 mdb_iob_margin(mdb.m_out, i); | |
| 363 mdb_iob_setflags(mdb.m_out, MDB_IOB_INDENT); | |
| 364 return (0); | |
| 365 } | |
| 366 | |
| 367 ulong_t | |
| 368 mdb_dec_indent(ulong_t i) | |
| 369 { | |
| 370 if (mdb_iob_getflags(mdb.m_out) & MDB_IOB_INDENT) { | |
| 371 ulong_t margin = mdb_iob_getmargin(mdb.m_out); | |
| 372 | |
| 373 if (margin < i || margin - i == 0) { | |
| 374 mdb_iob_clrflags(mdb.m_out, MDB_IOB_INDENT); | |
| 375 mdb_iob_margin(mdb.m_out, MDB_IOB_DEFMARGIN); | |
| 376 } else | |
| 377 mdb_iob_margin(mdb.m_out, margin - i); | |
| 378 | |
| 379 return (margin); | |
| 380 } | |
| 381 | |
| 382 return (0); | |
| 383 } | |
| 384 | |
| 385 int | |
| 386 mdb_eval(const char *s) | |
| 387 { | |
| 388 mdb_frame_t *ofp = mdb.m_fmark; | |
| 389 mdb_frame_t *fp = mdb.m_frame; | |
| 390 int err; | |
| 391 | |
| 392 if (s == NULL) | |
| 393 return (set_errno(EINVAL)); | |
| 394 | |
| 395 /* | |
| 396 * Push m_in down onto the input stack, then set m_in to point to the | |
| 397 * i/o buffer for our command string, and reset the frame marker. | |
| 398 * The mdb_run() function returns when the new m_in iob reaches EOF. | |
| 399 */ | |
| 400 mdb_iob_stack_push(&fp->f_istk, mdb.m_in, yylineno); | |
| 401 mdb.m_in = mdb_iob_create(mdb_strio_create(s), MDB_IOB_RDONLY); | |
| 402 | |
| 403 mdb.m_fmark = NULL; | |
| 404 err = mdb_run(); | |
| 405 mdb.m_fmark = ofp; | |
| 406 | |
| 407 /* | |
| 408 * Now pop the old standard input stream and restore mdb.m_in and | |
| 409 * the parser's saved current line number. | |
| 410 */ | |
| 411 mdb.m_in = mdb_iob_stack_pop(&fp->f_istk); | |
| 412 yylineno = mdb_iob_lineno(mdb.m_in); | |
| 413 | |
| 414 /* | |
| 415 * If mdb_run() returned an error, propagate this backward | |
| 416 * up the stack of debugger environment frames. | |
| 417 */ | |
| 418 if (MDB_ERR_IS_FATAL(err)) | |
| 419 longjmp(fp->f_pcb, err); | |
| 420 | |
| 421 if (err == MDB_ERR_PAGER || err == MDB_ERR_SIGINT) | |
| 422 return (set_errno(EMDB_CANCEL)); | |
| 423 | |
| 424 if (err != 0) | |
| 425 return (set_errno(EMDB_EVAL)); | |
| 426 | |
| 427 return (0); | |
| 428 } | |
| 429 | |
| 430 void | |
| 431 mdb_set_dot(uintmax_t addr) | |
| 432 { | |
| 433 mdb_nv_set_value(mdb.m_dot, addr); | |
| 434 mdb.m_incr = 0; | |
| 435 } | |
| 436 | |
| 437 uintmax_t | |
| 438 mdb_get_dot(void) | |
| 439 { | |
| 440 return (mdb_nv_get_value(mdb.m_dot)); | |
| 441 } | |
| 442 | |
| 443 static int | |
| 444 walk_step(mdb_wcb_t *wcb) | |
| 445 { | |
| 446 mdb_wcb_t *nwcb = wcb->w_lyr_head; | |
| 447 int status; | |
| 448 | |
| 449 /* | |
| 450 * If the control block has no layers, we just invoke the walker's | |
| 451 * step function and return status indicating whether to continue | |
| 452 * or stop. If the control block has layers, we need to invoke | |
| 453 * ourself recursively for the next layer, until eventually we | |
| 454 * percolate down to an unlayered walk. | |
| 455 */ | |
| 456 if (nwcb == NULL) | |
| 457 return (wcb->w_walker->iwlk_step(&wcb->w_state)); | |
| 458 | |
| 459 if ((status = walk_step(nwcb)) != WALK_NEXT) { | |
| 460 wcb->w_lyr_head = nwcb->w_lyr_link; | |
| 461 nwcb->w_lyr_link = NULL; | |
| 462 mdb_wcb_destroy(nwcb); | |
| 463 } | |
| 464 | |
| 465 if (status == WALK_DONE && wcb->w_lyr_head != NULL) | |
| 466 return (WALK_NEXT); | |
| 467 | |
| 468 return (status); | |
| 469 } | |
| 470 | |
| 471 static int | |
| 472 walk_common(mdb_wcb_t *wcb) | |
| 473 { | |
| 474 int status, rval = 0; | |
| 475 mdb_frame_t *pfp; | |
| 476 | |
| 477 /* | |
| 478 * Enter the control block in the active list so that mdb can clean | |
| 479 * up after it in case we abort out of the current command. | |
| 480 */ | |
| 481 if ((pfp = mdb_list_prev(mdb.m_frame)) != NULL && pfp->f_pcmd != NULL) | |
| 482 mdb_wcb_insert(wcb, pfp); | |
| 483 else | |
| 484 mdb_wcb_insert(wcb, mdb.m_frame); | |
| 485 | |
| 486 /* | |
| 487 * The per-walk constructor performs private buffer initialization | |
| 488 * and locates whatever symbols are necessary. | |
| 489 */ | |
| 490 if ((status = wcb->w_walker->iwlk_init(&wcb->w_state)) != WALK_NEXT) { | |
| 491 if (status != WALK_DONE) | |
| 492 rval = set_errno(EMDB_WALKINIT); | |
| 493 goto done; | |
| 494 } | |
| 495 | |
| 496 /* | |
| 497 * Mark wcb to indicate that walk_init has been called (which means | |
| 498 * we can call walk_fini if the walk is aborted at this point). | |
| 499 */ | |
| 500 wcb->w_inited = TRUE; | |
| 501 | |
| 502 while (walk_step(wcb) == WALK_NEXT) | |
| 503 continue; | |
| 504 done: | |
| 505 if ((pfp = mdb_list_prev(mdb.m_frame)) != NULL && pfp->f_pcmd != NULL) | |
| 506 mdb_wcb_delete(wcb, pfp); | |
| 507 else | |
| 508 mdb_wcb_delete(wcb, mdb.m_frame); | |
| 509 | |
| 510 mdb_wcb_destroy(wcb); | |
| 511 return (rval); | |
| 512 } | |
| 513 | |
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514 typedef struct pwalk_step { |
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515 mdb_walk_cb_t ps_cb; |
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516 void *ps_private; |
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517 } pwalk_step_t; |
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518 |
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519 static int |
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520 pwalk_step(uintptr_t addr, const void *data, void *private) |
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521 { |
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522 pwalk_step_t *psp = private; |
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523 int ret; |
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524 |
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525 mdb.m_frame->f_cbactive = B_TRUE; |
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526 ret = psp->ps_cb(addr, data, psp->ps_private); |
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527 mdb.m_frame->f_cbactive = B_FALSE; |
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528 |
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529 return (ret); |
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530 } |
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531 |
| 0 | 532 int |
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533 mdb_pwalk(const char *name, mdb_walk_cb_t func, void *private, uintptr_t addr) |
| 0 | 534 { |
| 535 mdb_iwalker_t *iwp = mdb_walker_lookup(name); | |
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536 pwalk_step_t p; |
| 0 | 537 |
| 538 if (func == NULL) | |
| 539 return (set_errno(EINVAL)); | |
| 540 | |
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541 p.ps_cb = func; |
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542 p.ps_private = private; |
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543 |
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544 if (iwp != NULL) { |
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545 int ret; |
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546 int cbactive = mdb.m_frame->f_cbactive; |
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547 mdb.m_frame->f_cbactive = B_FALSE; |
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548 ret = walk_common(mdb_wcb_create(iwp, pwalk_step, &p, addr)); |
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549 mdb.m_frame->f_cbactive = cbactive; |
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550 return (ret); |
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551 } |
| 0 | 552 |
| 553 return (-1); /* errno is set for us */ | |
| 554 } | |
| 555 | |
| 556 int | |
| 557 mdb_walk(const char *name, mdb_walk_cb_t func, void *data) | |
| 558 { | |
| 559 return (mdb_pwalk(name, func, data, NULL)); | |
| 560 } | |
| 561 | |
| 562 /*ARGSUSED*/ | |
| 563 static int | |
| 564 walk_dcmd(uintptr_t addr, const void *ignored, dcmd_walk_arg_t *dwp) | |
| 565 { | |
| 566 int status = mdb_call_idcmd(dwp->dw_dcmd, addr, 1, dwp->dw_flags, | |
| 567 &dwp->dw_argv, NULL, NULL); | |
| 568 | |
| 569 if (status == DCMD_USAGE || status == DCMD_ABORT) | |
| 570 return (WALK_ERR); | |
| 571 | |
| 572 dwp->dw_flags &= ~DCMD_LOOPFIRST; | |
| 573 return (WALK_NEXT); | |
| 574 } | |
| 575 | |
| 576 int | |
| 577 mdb_pwalk_dcmd(const char *wname, const char *dcname, | |
| 578 int argc, const mdb_arg_t *argv, uintptr_t addr) | |
| 579 { | |
| 580 mdb_argvec_t args; | |
| 581 dcmd_walk_arg_t dw; | |
| 582 mdb_iwalker_t *iwp; | |
| 583 mdb_wcb_t *wcb; | |
| 584 int status; | |
| 585 | |
| 586 if (wname == NULL || dcname == NULL) | |
| 587 return (set_errno(EINVAL)); | |
| 588 | |
| 589 if ((dw.dw_dcmd = mdb_dcmd_lookup(dcname)) == NULL) | |
| 590 return (-1); /* errno is set for us */ | |
| 591 | |
| 592 if ((iwp = mdb_walker_lookup(wname)) == NULL) | |
| 593 return (-1); /* errno is set for us */ | |
| 594 | |
| 595 args.a_data = (mdb_arg_t *)argv; | |
| 596 args.a_nelems = args.a_size = argc; | |
| 597 | |
| 598 mdb_argvec_create(&dw.dw_argv); | |
| 599 mdb_argvec_copy(&dw.dw_argv, &args); | |
| 600 dw.dw_flags = DCMD_LOOP | DCMD_LOOPFIRST | DCMD_ADDRSPEC; | |
| 601 | |
| 602 wcb = mdb_wcb_create(iwp, (mdb_walk_cb_t)walk_dcmd, &dw, addr); | |
| 603 status = walk_common(wcb); | |
| 604 | |
| 605 mdb_argvec_zero(&dw.dw_argv); | |
| 606 mdb_argvec_destroy(&dw.dw_argv); | |
| 607 | |
| 608 return (status); | |
| 609 } | |
| 610 | |
| 611 int | |
| 612 mdb_walk_dcmd(const char *wname, const char *dcname, | |
| 613 int argc, const mdb_arg_t *argv) | |
| 614 { | |
| 615 return (mdb_pwalk_dcmd(wname, dcname, argc, argv, NULL)); | |
| 616 } | |
| 617 | |
| 618 /*ARGSUSED*/ | |
| 619 static int | |
| 620 layered_walk_step(uintptr_t addr, const void *data, mdb_wcb_t *wcb) | |
| 621 { | |
| 622 /* | |
| 623 * Prior to calling the top-level walker's step function, reset its | |
| 624 * mdb_walk_state_t walk_addr and walk_layer members to refer to the | |
| 625 * target virtual address and data buffer of the underlying object. | |
| 626 */ | |
| 627 wcb->w_state.walk_addr = addr; | |
| 628 wcb->w_state.walk_layer = data; | |
| 629 | |
| 630 return (wcb->w_walker->iwlk_step(&wcb->w_state)); | |
| 631 } | |
| 632 | |
| 633 int | |
| 634 mdb_layered_walk(const char *wname, mdb_walk_state_t *wsp) | |
| 635 { | |
| 636 mdb_wcb_t *cwcb, *wcb; | |
| 637 mdb_iwalker_t *iwp; | |
| 638 | |
| 639 if (wname == NULL || wsp == NULL) | |
| 640 return (set_errno(EINVAL)); | |
| 641 | |
| 642 if ((iwp = mdb_walker_lookup(wname)) == NULL) | |
| 643 return (-1); /* errno is set for us */ | |
| 644 | |
| 645 if ((cwcb = mdb_wcb_from_state(wsp)) == NULL) | |
| 646 return (set_errno(EMDB_BADWCB)); | |
| 647 | |
| 648 if (cwcb->w_walker == iwp) | |
| 649 return (set_errno(EMDB_WALKLOOP)); | |
| 650 | |
| 651 wcb = mdb_wcb_create(iwp, (mdb_walk_cb_t)layered_walk_step, | |
| 652 cwcb, wsp->walk_addr); | |
| 653 | |
| 654 if (iwp->iwlk_init(&wcb->w_state) != WALK_NEXT) { | |
| 655 mdb_wcb_destroy(wcb); | |
| 656 return (set_errno(EMDB_WALKINIT)); | |
| 657 } | |
| 658 | |
| 659 wcb->w_inited = TRUE; | |
| 660 | |
| 661 mdb_dprintf(MDB_DBG_WALK, "added %s`%s as %s`%s layer\n", | |
| 662 iwp->iwlk_modp->mod_name, iwp->iwlk_name, | |
| 663 cwcb->w_walker->iwlk_modp->mod_name, cwcb->w_walker->iwlk_name); | |
| 664 | |
| 665 if (cwcb->w_lyr_head != NULL) { | |
| 666 for (cwcb = cwcb->w_lyr_head; cwcb->w_lyr_link != NULL; ) | |
| 667 cwcb = cwcb->w_lyr_link; | |
| 668 cwcb->w_lyr_link = wcb; | |
| 669 } else | |
| 670 cwcb->w_lyr_head = wcb; | |
| 671 | |
| 672 return (0); | |
| 673 } | |
| 674 | |
| 675 int | |
| 676 mdb_call_dcmd(const char *name, uintptr_t dot, uint_t flags, | |
| 677 int argc, const mdb_arg_t *argv) | |
| 678 { | |
| 679 mdb_idcmd_t *idcp; | |
| 680 mdb_argvec_t args; | |
| 681 int status; | |
| 682 | |
| 683 if (name == NULL || argc < 0) | |
| 684 return (set_errno(EINVAL)); | |
| 685 | |
| 686 if ((idcp = mdb_dcmd_lookup(name)) == NULL) | |
| 687 return (-1); /* errno is set for us */ | |
| 688 | |
| 689 args.a_data = (mdb_arg_t *)argv; | |
| 690 args.a_nelems = args.a_size = argc; | |
| 691 status = mdb_call_idcmd(idcp, dot, 1, flags, &args, NULL, NULL); | |
| 692 | |
| 693 if (status == DCMD_ERR || status == DCMD_ABORT) | |
| 694 return (set_errno(EMDB_DCFAIL)); | |
| 695 | |
| 696 if (status == DCMD_USAGE) | |
| 697 return (set_errno(EMDB_DCUSAGE)); | |
| 698 | |
| 699 return (0); | |
| 700 } | |
| 701 | |
| 702 int | |
| 703 mdb_add_walker(const mdb_walker_t *wp) | |
| 704 { | |
| 705 mdb_module_t *mp; | |
| 706 | |
| 707 if (mdb.m_lmod == NULL) { | |
| 708 mdb_cmd_t *cp = mdb.m_frame->f_cp; | |
| 709 mp = cp->c_dcmd->idc_modp; | |
| 710 } else | |
| 711 mp = mdb.m_lmod; | |
| 712 | |
| 713 return (mdb_module_add_walker(mp, wp, 0)); | |
| 714 } | |
| 715 | |
| 716 int | |
| 717 mdb_remove_walker(const char *name) | |
| 718 { | |
| 719 mdb_module_t *mp; | |
| 720 | |
| 721 if (mdb.m_lmod == NULL) { | |
| 722 mdb_cmd_t *cp = mdb.m_frame->f_cp; | |
| 723 mp = cp->c_dcmd->idc_modp; | |
| 724 } else | |
| 725 mp = mdb.m_lmod; | |
| 726 | |
| 727 return (mdb_module_remove_walker(mp, name)); | |
| 728 } | |
| 729 | |
| 730 void | |
| 731 mdb_get_pipe(mdb_pipe_t *p) | |
| 732 { | |
| 733 mdb_cmd_t *cp = mdb.m_frame->f_cp; | |
| 734 mdb_addrvec_t *adp = &cp->c_addrv; | |
| 735 | |
| 736 if (p == NULL) { | |
| 737 warn("dcmd failure: mdb_get_pipe invoked with NULL pointer\n"); | |
| 738 longjmp(mdb.m_frame->f_pcb, MDB_ERR_API); | |
| 739 } | |
| 740 | |
| 741 if (adp->ad_nelems != 0) { | |
| 742 ASSERT(adp->ad_ndx != 0); | |
| 743 p->pipe_data = &adp->ad_data[adp->ad_ndx - 1]; | |
| 744 p->pipe_len = adp->ad_nelems - adp->ad_ndx + 1; | |
| 745 adp->ad_ndx = adp->ad_nelems; | |
| 746 } else { | |
| 747 p->pipe_data = NULL; | |
| 748 p->pipe_len = 0; | |
| 749 } | |
| 750 } | |
| 751 | |
| 752 void | |
| 753 mdb_set_pipe(const mdb_pipe_t *p) | |
| 754 { | |
| 755 mdb_cmd_t *cp = mdb.m_frame->f_pcmd; | |
| 756 | |
| 757 if (p == NULL) { | |
| 758 warn("dcmd failure: mdb_set_pipe invoked with NULL pointer\n"); | |
| 759 longjmp(mdb.m_frame->f_pcb, MDB_ERR_API); | |
| 760 } | |
| 761 | |
| 762 if (cp != NULL) { | |
| 763 size_t nbytes = sizeof (uintptr_t) * p->pipe_len; | |
| 764 | |
| 3277 | 765 mdb_cmd_reset(cp); |
| 0 | 766 cp->c_addrv.ad_data = mdb_alloc(nbytes, UM_SLEEP); |
| 767 bcopy(p->pipe_data, cp->c_addrv.ad_data, nbytes); | |
| 768 cp->c_addrv.ad_nelems = p->pipe_len; | |
| 769 cp->c_addrv.ad_size = p->pipe_len; | |
| 770 } | |
| 771 } | |
| 772 | |
| 773 ssize_t | |
| 774 mdb_get_xdata(const char *name, void *buf, size_t nbytes) | |
| 775 { | |
| 776 return (mdb_tgt_getxdata(mdb.m_target, name, buf, nbytes)); | |
| 777 } | |
| 778 | |
| 779 /* | |
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780 * Private callback structure for implementing mdb_object_iter, below. |
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781 */ |
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782 typedef struct { |
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783 mdb_object_cb_t oi_cb; |
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784 void *oi_arg; |
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785 int oi_rval; |
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786 } object_iter_arg_t; |
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787 |
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788 /*ARGSUSED*/ |
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789 static int |
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790 mdb_object_cb(void *data, const mdb_map_t *map, const char *fullname) |
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791 { |
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792 object_iter_arg_t *arg = data; |
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793 mdb_object_t obj; |
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794 |
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795 if (arg->oi_rval != 0) |
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796 return (0); |
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797 |
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798 bzero(&obj, sizeof (obj)); |
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799 obj.obj_base = map->map_base; |
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800 obj.obj_name = strbasename(map->map_name); |
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801 obj.obj_size = map->map_size; |
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802 obj.obj_fullname = fullname; |
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803 |
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804 arg->oi_rval = arg->oi_cb(&obj, arg->oi_arg); |
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805 |
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806 return (0); |
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807 } |
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808 |
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809 int |
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810 mdb_object_iter(mdb_object_cb_t cb, void *data) |
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811 { |
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812 object_iter_arg_t arg; |
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813 |
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814 arg.oi_cb = cb; |
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815 arg.oi_arg = data; |
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816 arg.oi_rval = 0; |
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817 |
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818 if (mdb_tgt_object_iter(mdb.m_target, mdb_object_cb, &arg) != 0) |
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819 return (-1); |
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820 |
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821 return (arg.oi_rval); |
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822 } |
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823 |
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824 /* |
| 0 | 825 * Private structure and function for implementing mdb_dumpptr on top |
| 826 * of mdb_dump_internal | |
| 827 */ | |
| 828 typedef struct dptrdat { | |
| 829 mdb_dumpptr_cb_t func; | |
| 830 void *arg; | |
| 831 } dptrdat_t; | |
| 832 | |
| 833 static ssize_t | |
| 834 mdb_dump_aux_ptr(void *buf, size_t nbyte, uint64_t offset, void *arg) | |
| 835 { | |
| 836 dptrdat_t *dat = arg; | |
| 837 | |
| 838 return (dat->func(buf, nbyte, offset, dat->arg)); | |
| 839 } | |
| 840 | |
| 841 /* | |
| 842 * Private structure and function for handling callbacks which return | |
| 843 * EMDB_PARTIAL | |
| 844 */ | |
| 845 typedef struct d64dat { | |
| 846 mdb_dump64_cb_t func; | |
| 847 void *arg; | |
| 848 } d64dat_t; | |
| 849 | |
| 850 static ssize_t | |
| 851 mdb_dump_aux_partial(void *buf, size_t nbyte, uint64_t offset, void *arg) | |
| 852 { | |
| 853 d64dat_t *dat = arg; | |
| 854 int result; | |
| 855 int count; | |
| 856 | |
| 857 result = dat->func(buf, nbyte, offset, dat->arg); | |
| 858 if (result == -1 && errno == EMDB_PARTIAL) { | |
| 859 count = 0; | |
| 860 do { | |
| 861 result = dat->func((char *)buf + count, 1, | |
| 862 offset + count, dat->arg); | |
| 863 if (result == 1) | |
| 864 count++; | |
| 865 } while (count < nbyte && result == 1); | |
| 866 if (count) | |
| 867 result = count; | |
| 868 } | |
| 869 | |
| 870 return (result); | |
| 871 } | |
| 872 | |
| 873 int | |
| 874 mdb_dumpptr(uintptr_t addr, size_t len, uint_t flags, mdb_dumpptr_cb_t fp, | |
| 875 void *arg) | |
| 876 { | |
| 877 dptrdat_t dat; | |
| 878 d64dat_t dat64; | |
| 879 | |
| 880 dat.func = fp; | |
| 881 dat.arg = arg; | |
| 882 dat64.func = mdb_dump_aux_ptr; | |
| 883 dat64.arg = &dat; | |
| 884 return (mdb_dump_internal(addr, len, flags, mdb_dump_aux_partial, | |
| 885 &dat64, sizeof (uintptr_t))); | |
| 886 } | |
| 887 | |
| 888 int | |
| 889 mdb_dump64(uint64_t addr, uint64_t len, uint_t flags, mdb_dump64_cb_t fp, | |
| 890 void *arg) | |
| 891 { | |
| 892 d64dat_t dat64; | |
| 893 | |
| 894 dat64.func = fp; | |
| 895 dat64.arg = arg; | |
| 896 return (mdb_dump_internal(addr, len, flags, mdb_dump_aux_partial, | |
| 897 &dat64, sizeof (uint64_t))); | |
| 898 } | |
| 899 | |
| 900 int | |
| 901 mdb_get_state(void) | |
| 902 { | |
| 903 mdb_tgt_status_t ts; | |
| 904 | |
| 905 (void) mdb_tgt_status(mdb.m_target, &ts); | |
| 906 | |
| 907 return (ts.st_state); | |
| 908 } | |
| 909 | |
| 910 void * | |
| 911 mdb_callback_add(int class, mdb_callback_f fp, void *arg) | |
| 912 { | |
| 913 mdb_module_t *m; | |
| 914 | |
| 915 if (class != MDB_CALLBACK_STCHG && class != MDB_CALLBACK_PROMPT) { | |
| 916 (void) set_errno(EINVAL); | |
| 917 return (NULL); | |
| 918 } | |
| 919 | |
| 920 if (mdb.m_lmod != NULL) | |
| 921 m = mdb.m_lmod; | |
| 922 else | |
| 923 m = mdb.m_frame->f_cp->c_dcmd->idc_modp; | |
| 924 | |
| 925 return (mdb_callb_add(m, class, fp, arg)); | |
| 926 } | |
| 927 | |
| 928 void | |
| 929 mdb_callback_remove(void *hdl) | |
| 930 { | |
| 931 mdb_callb_remove(hdl); | |
| 932 } |