Mercurial > illumos > illumos-gate
annotate usr/src/cmd/mdb/common/mdb/mdb_modapi.c @ 14155:dcd9e8748b08
3946 ::gcore
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
| author | Jeremy Jones <jeremy@delphix.com> |
|---|---|
| date | Wed, 21 Aug 2013 15:45:46 -0800 |
| parents | 20cdcfea8015 |
| children |
| 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 | |
| 14155 | 74 mdb_aread(void *buf, size_t nbytes, uintptr_t addr, void *as) |
| 75 { | |
| 76 ssize_t rbytes = mdb_tgt_aread(mdb.m_target, as, 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_awrite(const void *buf, size_t nbytes, uintptr_t addr, void *as) | |
| 86 { | |
| 87 return (mdb_tgt_awrite(mdb.m_target, as, buf, nbytes, addr)); | |
| 88 } | |
| 89 | |
| 90 ssize_t | |
| 0 | 91 mdb_fread(void *buf, size_t nbytes, uintptr_t addr) |
| 92 { | |
| 93 ssize_t rbytes = mdb_tgt_fread(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_fwrite(const void *buf, size_t nbytes, uintptr_t addr) | |
| 103 { | |
| 104 return (mdb_tgt_fwrite(mdb.m_target, buf, nbytes, addr)); | |
| 105 } | |
| 106 | |
| 107 ssize_t | |
| 108 mdb_pread(void *buf, size_t nbytes, physaddr_t addr) | |
| 109 { | |
| 110 ssize_t rbytes = mdb_tgt_pread(mdb.m_target, buf, nbytes, addr); | |
| 111 | |
| 112 if (rbytes > 0 && rbytes < nbytes) | |
| 113 return (set_errbytes(rbytes, nbytes)); | |
| 114 | |
| 115 return (rbytes); | |
| 116 } | |
| 117 | |
| 118 ssize_t | |
| 119 mdb_pwrite(const void *buf, size_t nbytes, physaddr_t addr) | |
| 120 { | |
| 121 return (mdb_tgt_pwrite(mdb.m_target, buf, nbytes, addr)); | |
| 122 } | |
| 123 | |
| 124 ssize_t | |
| 125 mdb_readstr(char *buf, size_t nbytes, uintptr_t addr) | |
| 126 { | |
| 127 return (mdb_tgt_readstr(mdb.m_target, MDB_TGT_AS_VIRT, | |
| 128 buf, nbytes, addr)); | |
| 129 } | |
| 130 | |
| 131 ssize_t | |
| 132 mdb_writestr(const char *buf, uintptr_t addr) | |
| 133 { | |
| 134 return (mdb_tgt_writestr(mdb.m_target, MDB_TGT_AS_VIRT, buf, addr)); | |
| 135 } | |
| 136 | |
| 137 ssize_t | |
| 138 mdb_readsym(void *buf, size_t nbytes, const char *name) | |
| 139 { | |
| 140 ssize_t rbytes = mdb_tgt_readsym(mdb.m_target, MDB_TGT_AS_VIRT, | |
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141 buf, nbytes, MDB_TGT_OBJ_EVERY, name); |
| 0 | 142 |
| 143 if (rbytes > 0 && rbytes < nbytes) | |
| 144 return (set_errbytes(rbytes, nbytes)); | |
| 145 | |
| 146 return (rbytes); | |
| 147 } | |
| 148 | |
| 149 ssize_t | |
| 150 mdb_writesym(const void *buf, size_t nbytes, const char *name) | |
| 151 { | |
| 152 return (mdb_tgt_writesym(mdb.m_target, MDB_TGT_AS_VIRT, | |
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153 buf, nbytes, MDB_TGT_OBJ_EVERY, name)); |
| 0 | 154 } |
| 155 | |
| 156 ssize_t | |
| 157 mdb_readvar(void *buf, const char *name) | |
| 158 { | |
| 159 GElf_Sym sym; | |
| 160 | |
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161 if (mdb_tgt_lookup_by_name(mdb.m_target, MDB_TGT_OBJ_EVERY, |
| 0 | 162 name, &sym, NULL)) |
| 163 return (-1); | |
| 164 | |
| 165 if (mdb_tgt_vread(mdb.m_target, buf, sym.st_size, | |
| 166 (uintptr_t)sym.st_value) == sym.st_size) | |
| 167 return ((ssize_t)sym.st_size); | |
| 168 | |
| 169 return (-1); | |
| 170 } | |
| 171 | |
| 172 ssize_t | |
| 173 mdb_writevar(const void *buf, const char *name) | |
| 174 { | |
| 175 GElf_Sym sym; | |
| 176 | |
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177 if (mdb_tgt_lookup_by_name(mdb.m_target, MDB_TGT_OBJ_EVERY, |
| 0 | 178 name, &sym, NULL)) |
| 179 return (-1); | |
| 180 | |
| 181 if (mdb_tgt_vwrite(mdb.m_target, buf, sym.st_size, | |
| 182 (uintptr_t)sym.st_value) == sym.st_size) | |
| 183 return ((ssize_t)sym.st_size); | |
| 184 | |
| 185 return (-1); | |
| 186 } | |
| 187 | |
| 188 int | |
| 189 mdb_lookup_by_name(const char *name, GElf_Sym *sym) | |
| 190 { | |
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191 return (mdb_lookup_by_obj(MDB_TGT_OBJ_EVERY, name, sym)); |
| 0 | 192 } |
| 193 | |
| 194 int | |
| 195 mdb_lookup_by_obj(const char *obj, const char *name, GElf_Sym *sym) | |
| 196 { | |
| 197 return (mdb_tgt_lookup_by_name(mdb.m_target, obj, name, sym, NULL)); | |
| 198 } | |
| 199 | |
| 200 int | |
| 201 mdb_lookup_by_addr(uintptr_t addr, uint_t flags, char *buf, | |
| 202 size_t nbytes, GElf_Sym *sym) | |
| 203 { | |
| 204 return (mdb_tgt_lookup_by_addr(mdb.m_target, addr, flags, | |
| 205 buf, nbytes, sym, NULL)); | |
| 206 } | |
| 207 | |
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208 int |
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209 mdb_getareg(mdb_tid_t tid, const char *rname, mdb_reg_t *rp) |
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210 { |
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211 return (mdb_tgt_getareg(mdb.m_target, tid, rname, rp)); |
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212 } |
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213 |
| 0 | 214 u_longlong_t |
| 215 mdb_strtoull(const char *s) | |
| 216 { | |
| 217 int radix = mdb.m_radix; | |
| 218 | |
| 219 if (s[0] == '0') { | |
| 220 switch (s[1]) { | |
| 221 case 'I': | |
| 222 case 'i': | |
| 223 radix = 2; | |
| 224 s += 2; | |
| 225 break; | |
| 226 case 'O': | |
| 227 case 'o': | |
| 228 radix = 8; | |
| 229 s += 2; | |
| 230 break; | |
| 231 case 'T': | |
| 232 case 't': | |
| 233 radix = 10; | |
| 234 s += 2; | |
| 235 break; | |
| 236 case 'X': | |
| 237 case 'x': | |
| 238 radix = 16; | |
| 239 s += 2; | |
| 240 break; | |
| 241 } | |
| 242 } | |
| 243 | |
| 244 return (strtonum(s, radix)); | |
| 245 } | |
| 246 | |
| 247 size_t | |
| 248 mdb_snprintf(char *buf, size_t nbytes, const char *format, ...) | |
| 249 { | |
| 250 va_list alist; | |
| 251 | |
| 252 va_start(alist, format); | |
| 253 nbytes = mdb_iob_vsnprintf(buf, nbytes, format, alist); | |
| 254 va_end(alist); | |
| 255 | |
| 256 return (nbytes); | |
| 257 } | |
| 258 | |
| 259 void | |
| 260 mdb_printf(const char *format, ...) | |
| 261 { | |
| 262 va_list alist; | |
| 263 | |
| 264 va_start(alist, format); | |
| 265 mdb_iob_vprintf(mdb.m_out, format, alist); | |
| 266 va_end(alist); | |
| 267 } | |
| 268 | |
| 269 void | |
| 270 mdb_warn(const char *format, ...) | |
| 271 { | |
| 272 va_list alist; | |
| 273 | |
| 274 va_start(alist, format); | |
| 275 vwarn(format, alist); | |
| 276 va_end(alist); | |
| 277 } | |
| 278 | |
| 279 void | |
| 280 mdb_flush(void) | |
| 281 { | |
| 282 mdb_iob_flush(mdb.m_out); | |
| 283 } | |
| 284 | |
| 285 /* | |
| 286 * Convert an object of len bytes pointed to by srcraw between | |
| 287 * network-order and host-order and store in dstraw. The length len must | |
| 288 * be the actual length of the objects pointed to by srcraw and dstraw (or | |
| 289 * zero) or the results are undefined. srcraw and dstraw may be the same, | |
| 290 * in which case the object is converted in-place. Note that this routine | |
| 291 * will convert from host-order to network-order or network-order to | |
| 292 * host-order, since the conversion is the same in either case. | |
| 293 */ | |
| 294 /* ARGSUSED */ | |
| 295 void | |
| 296 mdb_nhconvert(void *dstraw, const void *srcraw, size_t len) | |
| 297 { | |
| 298 #ifdef _LITTLE_ENDIAN | |
| 299 uint8_t b1, b2; | |
| 300 uint8_t *dst, *src; | |
| 301 size_t i; | |
| 302 | |
| 303 dst = (uint8_t *)dstraw; | |
| 304 src = (uint8_t *)srcraw; | |
| 305 for (i = 0; i < len / 2; i++) { | |
| 306 b1 = src[i]; | |
| 307 b2 = src[len - i - 1]; | |
| 308 dst[i] = b2; | |
| 309 dst[len - i - 1] = b1; | |
| 310 } | |
| 311 #else | |
| 312 if (dstraw != srcraw) | |
| 313 bcopy(srcraw, dstraw, len); | |
| 314 #endif | |
| 315 } | |
| 316 | |
| 317 | |
| 318 /* | |
| 319 * Bit formatting functions: Note the interesting use of UM_GC here to | |
| 320 * allocate a buffer for the caller which will be automatically freed | |
| 321 * when the dcmd completes or is forcibly aborted. | |
| 322 */ | |
| 323 | |
| 324 #define NBNB (NBBY / 2) /* number of bits per nibble */ | |
| 325 #define SETBIT(buf, j, c) { \ | |
| 326 if (((j) + 1) % (NBNB + 1) == 0) \ | |
| 327 (buf)[(j)++] = ' '; \ | |
| 328 (buf)[(j)++] = (c); \ | |
| 329 } | |
| 330 | |
| 331 const char * | |
| 332 mdb_one_bit(int width, int bit, int on) | |
| 333 { | |
| 334 int i, j = 0; | |
| 335 char *buf; | |
| 336 | |
| 337 buf = mdb_zalloc(width + (width / NBNB) + 2, UM_GC | UM_SLEEP); | |
| 338 | |
| 339 for (i = --width; i > bit; i--) | |
| 340 SETBIT(buf, j, '.'); | |
| 341 | |
| 342 SETBIT(buf, j, on ? '1' : '0'); | |
| 343 | |
| 344 for (i = bit - 1; i >= 0; i--) | |
| 345 SETBIT(buf, j, '.'); | |
| 346 | |
| 347 return (buf); | |
| 348 } | |
| 349 | |
| 350 const char * | |
| 351 mdb_inval_bits(int width, int start, int stop) | |
| 352 { | |
| 353 int i, j = 0; | |
| 354 char *buf; | |
| 355 | |
| 356 buf = mdb_zalloc(width + (width / NBNB) + 2, UM_GC | UM_SLEEP); | |
| 357 | |
| 358 for (i = --width; i > stop; i--) | |
| 359 SETBIT(buf, j, '.'); | |
| 360 | |
| 361 for (i = stop; i >= start; i--) | |
| 362 SETBIT(buf, j, 'x'); | |
| 363 | |
| 364 for (; i >= 0; i--) | |
| 365 SETBIT(buf, j, '.'); | |
| 366 | |
| 367 return (buf); | |
| 368 } | |
| 369 | |
| 370 ulong_t | |
| 371 mdb_inc_indent(ulong_t i) | |
| 372 { | |
| 373 if (mdb_iob_getflags(mdb.m_out) & MDB_IOB_INDENT) { | |
| 374 ulong_t margin = mdb_iob_getmargin(mdb.m_out); | |
| 375 mdb_iob_margin(mdb.m_out, margin + i); | |
| 376 return (margin); | |
| 377 } | |
| 378 | |
| 379 mdb_iob_margin(mdb.m_out, i); | |
| 380 mdb_iob_setflags(mdb.m_out, MDB_IOB_INDENT); | |
| 381 return (0); | |
| 382 } | |
| 383 | |
| 384 ulong_t | |
| 385 mdb_dec_indent(ulong_t i) | |
| 386 { | |
| 387 if (mdb_iob_getflags(mdb.m_out) & MDB_IOB_INDENT) { | |
| 388 ulong_t margin = mdb_iob_getmargin(mdb.m_out); | |
| 389 | |
| 390 if (margin < i || margin - i == 0) { | |
| 391 mdb_iob_clrflags(mdb.m_out, MDB_IOB_INDENT); | |
| 392 mdb_iob_margin(mdb.m_out, MDB_IOB_DEFMARGIN); | |
| 393 } else | |
| 394 mdb_iob_margin(mdb.m_out, margin - i); | |
| 395 | |
| 396 return (margin); | |
| 397 } | |
| 398 | |
| 399 return (0); | |
| 400 } | |
| 401 | |
| 402 int | |
| 403 mdb_eval(const char *s) | |
| 404 { | |
| 405 mdb_frame_t *ofp = mdb.m_fmark; | |
| 406 mdb_frame_t *fp = mdb.m_frame; | |
| 407 int err; | |
| 408 | |
| 409 if (s == NULL) | |
| 410 return (set_errno(EINVAL)); | |
| 411 | |
| 412 /* | |
| 413 * Push m_in down onto the input stack, then set m_in to point to the | |
| 414 * i/o buffer for our command string, and reset the frame marker. | |
| 415 * The mdb_run() function returns when the new m_in iob reaches EOF. | |
| 416 */ | |
| 417 mdb_iob_stack_push(&fp->f_istk, mdb.m_in, yylineno); | |
| 418 mdb.m_in = mdb_iob_create(mdb_strio_create(s), MDB_IOB_RDONLY); | |
| 419 | |
| 420 mdb.m_fmark = NULL; | |
| 421 err = mdb_run(); | |
| 422 mdb.m_fmark = ofp; | |
| 423 | |
| 424 /* | |
| 425 * Now pop the old standard input stream and restore mdb.m_in and | |
| 426 * the parser's saved current line number. | |
| 427 */ | |
| 428 mdb.m_in = mdb_iob_stack_pop(&fp->f_istk); | |
| 429 yylineno = mdb_iob_lineno(mdb.m_in); | |
| 430 | |
| 431 /* | |
| 432 * If mdb_run() returned an error, propagate this backward | |
| 433 * up the stack of debugger environment frames. | |
| 434 */ | |
| 435 if (MDB_ERR_IS_FATAL(err)) | |
| 436 longjmp(fp->f_pcb, err); | |
| 437 | |
| 438 if (err == MDB_ERR_PAGER || err == MDB_ERR_SIGINT) | |
| 439 return (set_errno(EMDB_CANCEL)); | |
| 440 | |
| 441 if (err != 0) | |
| 442 return (set_errno(EMDB_EVAL)); | |
| 443 | |
| 444 return (0); | |
| 445 } | |
| 446 | |
| 447 void | |
| 448 mdb_set_dot(uintmax_t addr) | |
| 449 { | |
| 450 mdb_nv_set_value(mdb.m_dot, addr); | |
| 451 mdb.m_incr = 0; | |
| 452 } | |
| 453 | |
| 454 uintmax_t | |
| 455 mdb_get_dot(void) | |
| 456 { | |
| 457 return (mdb_nv_get_value(mdb.m_dot)); | |
| 458 } | |
| 459 | |
| 460 static int | |
| 461 walk_step(mdb_wcb_t *wcb) | |
| 462 { | |
| 463 mdb_wcb_t *nwcb = wcb->w_lyr_head; | |
| 464 int status; | |
| 465 | |
| 466 /* | |
| 467 * If the control block has no layers, we just invoke the walker's | |
| 468 * step function and return status indicating whether to continue | |
| 469 * or stop. If the control block has layers, we need to invoke | |
| 470 * ourself recursively for the next layer, until eventually we | |
| 471 * percolate down to an unlayered walk. | |
| 472 */ | |
| 473 if (nwcb == NULL) | |
| 474 return (wcb->w_walker->iwlk_step(&wcb->w_state)); | |
| 475 | |
| 476 if ((status = walk_step(nwcb)) != WALK_NEXT) { | |
| 477 wcb->w_lyr_head = nwcb->w_lyr_link; | |
| 478 nwcb->w_lyr_link = NULL; | |
| 479 mdb_wcb_destroy(nwcb); | |
| 480 } | |
| 481 | |
| 482 if (status == WALK_DONE && wcb->w_lyr_head != NULL) | |
| 483 return (WALK_NEXT); | |
| 484 | |
| 485 return (status); | |
| 486 } | |
| 487 | |
| 488 static int | |
| 489 walk_common(mdb_wcb_t *wcb) | |
| 490 { | |
| 491 int status, rval = 0; | |
| 492 mdb_frame_t *pfp; | |
| 493 | |
| 494 /* | |
| 495 * Enter the control block in the active list so that mdb can clean | |
| 496 * up after it in case we abort out of the current command. | |
| 497 */ | |
| 498 if ((pfp = mdb_list_prev(mdb.m_frame)) != NULL && pfp->f_pcmd != NULL) | |
| 499 mdb_wcb_insert(wcb, pfp); | |
| 500 else | |
| 501 mdb_wcb_insert(wcb, mdb.m_frame); | |
| 502 | |
| 503 /* | |
| 504 * The per-walk constructor performs private buffer initialization | |
| 505 * and locates whatever symbols are necessary. | |
| 506 */ | |
| 507 if ((status = wcb->w_walker->iwlk_init(&wcb->w_state)) != WALK_NEXT) { | |
| 508 if (status != WALK_DONE) | |
| 509 rval = set_errno(EMDB_WALKINIT); | |
| 510 goto done; | |
| 511 } | |
| 512 | |
| 513 /* | |
| 514 * Mark wcb to indicate that walk_init has been called (which means | |
| 515 * we can call walk_fini if the walk is aborted at this point). | |
| 516 */ | |
| 517 wcb->w_inited = TRUE; | |
| 518 | |
| 519 while (walk_step(wcb) == WALK_NEXT) | |
| 520 continue; | |
| 521 done: | |
| 522 if ((pfp = mdb_list_prev(mdb.m_frame)) != NULL && pfp->f_pcmd != NULL) | |
| 523 mdb_wcb_delete(wcb, pfp); | |
| 524 else | |
| 525 mdb_wcb_delete(wcb, mdb.m_frame); | |
| 526 | |
| 527 mdb_wcb_destroy(wcb); | |
| 528 return (rval); | |
| 529 } | |
| 530 | |
|
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531 typedef struct pwalk_step { |
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532 mdb_walk_cb_t ps_cb; |
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533 void *ps_private; |
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534 } pwalk_step_t; |
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535 |
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536 static int |
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537 pwalk_step(uintptr_t addr, const void *data, void *private) |
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538 { |
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539 pwalk_step_t *psp = private; |
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540 int ret; |
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541 |
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542 mdb.m_frame->f_cbactive = B_TRUE; |
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543 ret = psp->ps_cb(addr, data, psp->ps_private); |
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544 mdb.m_frame->f_cbactive = B_FALSE; |
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545 |
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546 return (ret); |
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547 } |
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548 |
| 0 | 549 int |
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550 mdb_pwalk(const char *name, mdb_walk_cb_t func, void *private, uintptr_t addr) |
| 0 | 551 { |
| 552 mdb_iwalker_t *iwp = mdb_walker_lookup(name); | |
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553 pwalk_step_t p; |
| 0 | 554 |
| 555 if (func == NULL) | |
| 556 return (set_errno(EINVAL)); | |
| 557 | |
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558 p.ps_cb = func; |
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559 p.ps_private = private; |
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560 |
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561 if (iwp != NULL) { |
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562 int ret; |
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563 int cbactive = mdb.m_frame->f_cbactive; |
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564 mdb.m_frame->f_cbactive = B_FALSE; |
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565 ret = walk_common(mdb_wcb_create(iwp, pwalk_step, &p, addr)); |
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566 mdb.m_frame->f_cbactive = cbactive; |
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567 return (ret); |
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568 } |
| 0 | 569 |
| 570 return (-1); /* errno is set for us */ | |
| 571 } | |
| 572 | |
| 573 int | |
| 574 mdb_walk(const char *name, mdb_walk_cb_t func, void *data) | |
| 575 { | |
| 576 return (mdb_pwalk(name, func, data, NULL)); | |
| 577 } | |
| 578 | |
| 579 /*ARGSUSED*/ | |
| 580 static int | |
| 581 walk_dcmd(uintptr_t addr, const void *ignored, dcmd_walk_arg_t *dwp) | |
| 582 { | |
| 583 int status = mdb_call_idcmd(dwp->dw_dcmd, addr, 1, dwp->dw_flags, | |
| 584 &dwp->dw_argv, NULL, NULL); | |
| 585 | |
| 586 if (status == DCMD_USAGE || status == DCMD_ABORT) | |
| 587 return (WALK_ERR); | |
| 588 | |
| 589 dwp->dw_flags &= ~DCMD_LOOPFIRST; | |
| 590 return (WALK_NEXT); | |
| 591 } | |
| 592 | |
| 593 int | |
| 594 mdb_pwalk_dcmd(const char *wname, const char *dcname, | |
| 595 int argc, const mdb_arg_t *argv, uintptr_t addr) | |
| 596 { | |
| 597 mdb_argvec_t args; | |
| 598 dcmd_walk_arg_t dw; | |
| 599 mdb_iwalker_t *iwp; | |
| 600 mdb_wcb_t *wcb; | |
| 601 int status; | |
| 602 | |
| 603 if (wname == NULL || dcname == NULL) | |
| 604 return (set_errno(EINVAL)); | |
| 605 | |
| 606 if ((dw.dw_dcmd = mdb_dcmd_lookup(dcname)) == NULL) | |
| 607 return (-1); /* errno is set for us */ | |
| 608 | |
| 609 if ((iwp = mdb_walker_lookup(wname)) == NULL) | |
| 610 return (-1); /* errno is set for us */ | |
| 611 | |
| 612 args.a_data = (mdb_arg_t *)argv; | |
| 613 args.a_nelems = args.a_size = argc; | |
| 614 | |
| 615 mdb_argvec_create(&dw.dw_argv); | |
| 616 mdb_argvec_copy(&dw.dw_argv, &args); | |
| 617 dw.dw_flags = DCMD_LOOP | DCMD_LOOPFIRST | DCMD_ADDRSPEC; | |
| 618 | |
| 619 wcb = mdb_wcb_create(iwp, (mdb_walk_cb_t)walk_dcmd, &dw, addr); | |
| 620 status = walk_common(wcb); | |
| 621 | |
| 622 mdb_argvec_zero(&dw.dw_argv); | |
| 623 mdb_argvec_destroy(&dw.dw_argv); | |
| 624 | |
| 625 return (status); | |
| 626 } | |
| 627 | |
| 628 int | |
| 629 mdb_walk_dcmd(const char *wname, const char *dcname, | |
| 630 int argc, const mdb_arg_t *argv) | |
| 631 { | |
| 632 return (mdb_pwalk_dcmd(wname, dcname, argc, argv, NULL)); | |
| 633 } | |
| 634 | |
| 635 /*ARGSUSED*/ | |
| 636 static int | |
| 637 layered_walk_step(uintptr_t addr, const void *data, mdb_wcb_t *wcb) | |
| 638 { | |
| 639 /* | |
| 640 * Prior to calling the top-level walker's step function, reset its | |
| 641 * mdb_walk_state_t walk_addr and walk_layer members to refer to the | |
| 642 * target virtual address and data buffer of the underlying object. | |
| 643 */ | |
| 644 wcb->w_state.walk_addr = addr; | |
| 645 wcb->w_state.walk_layer = data; | |
| 646 | |
| 647 return (wcb->w_walker->iwlk_step(&wcb->w_state)); | |
| 648 } | |
| 649 | |
| 650 int | |
| 651 mdb_layered_walk(const char *wname, mdb_walk_state_t *wsp) | |
| 652 { | |
| 653 mdb_wcb_t *cwcb, *wcb; | |
| 654 mdb_iwalker_t *iwp; | |
| 655 | |
| 656 if (wname == NULL || wsp == NULL) | |
| 657 return (set_errno(EINVAL)); | |
| 658 | |
| 659 if ((iwp = mdb_walker_lookup(wname)) == NULL) | |
| 660 return (-1); /* errno is set for us */ | |
| 661 | |
| 662 if ((cwcb = mdb_wcb_from_state(wsp)) == NULL) | |
| 663 return (set_errno(EMDB_BADWCB)); | |
| 664 | |
| 665 if (cwcb->w_walker == iwp) | |
| 666 return (set_errno(EMDB_WALKLOOP)); | |
| 667 | |
| 668 wcb = mdb_wcb_create(iwp, (mdb_walk_cb_t)layered_walk_step, | |
| 669 cwcb, wsp->walk_addr); | |
| 670 | |
| 671 if (iwp->iwlk_init(&wcb->w_state) != WALK_NEXT) { | |
| 672 mdb_wcb_destroy(wcb); | |
| 673 return (set_errno(EMDB_WALKINIT)); | |
| 674 } | |
| 675 | |
| 676 wcb->w_inited = TRUE; | |
| 677 | |
| 678 mdb_dprintf(MDB_DBG_WALK, "added %s`%s as %s`%s layer\n", | |
| 679 iwp->iwlk_modp->mod_name, iwp->iwlk_name, | |
| 680 cwcb->w_walker->iwlk_modp->mod_name, cwcb->w_walker->iwlk_name); | |
| 681 | |
| 682 if (cwcb->w_lyr_head != NULL) { | |
| 683 for (cwcb = cwcb->w_lyr_head; cwcb->w_lyr_link != NULL; ) | |
| 684 cwcb = cwcb->w_lyr_link; | |
| 685 cwcb->w_lyr_link = wcb; | |
| 686 } else | |
| 687 cwcb->w_lyr_head = wcb; | |
| 688 | |
| 689 return (0); | |
| 690 } | |
| 691 | |
| 692 int | |
| 693 mdb_call_dcmd(const char *name, uintptr_t dot, uint_t flags, | |
| 694 int argc, const mdb_arg_t *argv) | |
| 695 { | |
| 696 mdb_idcmd_t *idcp; | |
| 697 mdb_argvec_t args; | |
| 698 int status; | |
| 699 | |
| 700 if (name == NULL || argc < 0) | |
| 701 return (set_errno(EINVAL)); | |
| 702 | |
| 703 if ((idcp = mdb_dcmd_lookup(name)) == NULL) | |
| 704 return (-1); /* errno is set for us */ | |
| 705 | |
| 706 args.a_data = (mdb_arg_t *)argv; | |
| 707 args.a_nelems = args.a_size = argc; | |
| 708 status = mdb_call_idcmd(idcp, dot, 1, flags, &args, NULL, NULL); | |
| 709 | |
| 710 if (status == DCMD_ERR || status == DCMD_ABORT) | |
| 711 return (set_errno(EMDB_DCFAIL)); | |
| 712 | |
| 713 if (status == DCMD_USAGE) | |
| 714 return (set_errno(EMDB_DCUSAGE)); | |
| 715 | |
| 716 return (0); | |
| 717 } | |
| 718 | |
| 719 int | |
| 720 mdb_add_walker(const mdb_walker_t *wp) | |
| 721 { | |
| 722 mdb_module_t *mp; | |
| 723 | |
| 724 if (mdb.m_lmod == NULL) { | |
| 725 mdb_cmd_t *cp = mdb.m_frame->f_cp; | |
| 726 mp = cp->c_dcmd->idc_modp; | |
| 727 } else | |
| 728 mp = mdb.m_lmod; | |
| 729 | |
| 730 return (mdb_module_add_walker(mp, wp, 0)); | |
| 731 } | |
| 732 | |
| 733 int | |
| 734 mdb_remove_walker(const char *name) | |
| 735 { | |
| 736 mdb_module_t *mp; | |
| 737 | |
| 738 if (mdb.m_lmod == NULL) { | |
| 739 mdb_cmd_t *cp = mdb.m_frame->f_cp; | |
| 740 mp = cp->c_dcmd->idc_modp; | |
| 741 } else | |
| 742 mp = mdb.m_lmod; | |
| 743 | |
| 744 return (mdb_module_remove_walker(mp, name)); | |
| 745 } | |
| 746 | |
| 747 void | |
| 748 mdb_get_pipe(mdb_pipe_t *p) | |
| 749 { | |
| 750 mdb_cmd_t *cp = mdb.m_frame->f_cp; | |
| 751 mdb_addrvec_t *adp = &cp->c_addrv; | |
| 752 | |
| 753 if (p == NULL) { | |
| 754 warn("dcmd failure: mdb_get_pipe invoked with NULL pointer\n"); | |
| 755 longjmp(mdb.m_frame->f_pcb, MDB_ERR_API); | |
| 756 } | |
| 757 | |
| 758 if (adp->ad_nelems != 0) { | |
| 759 ASSERT(adp->ad_ndx != 0); | |
| 760 p->pipe_data = &adp->ad_data[adp->ad_ndx - 1]; | |
| 761 p->pipe_len = adp->ad_nelems - adp->ad_ndx + 1; | |
| 762 adp->ad_ndx = adp->ad_nelems; | |
| 763 } else { | |
| 764 p->pipe_data = NULL; | |
| 765 p->pipe_len = 0; | |
| 766 } | |
| 767 } | |
| 768 | |
| 769 void | |
| 770 mdb_set_pipe(const mdb_pipe_t *p) | |
| 771 { | |
| 772 mdb_cmd_t *cp = mdb.m_frame->f_pcmd; | |
| 773 | |
| 774 if (p == NULL) { | |
| 775 warn("dcmd failure: mdb_set_pipe invoked with NULL pointer\n"); | |
| 776 longjmp(mdb.m_frame->f_pcb, MDB_ERR_API); | |
| 777 } | |
| 778 | |
| 779 if (cp != NULL) { | |
| 780 size_t nbytes = sizeof (uintptr_t) * p->pipe_len; | |
| 781 | |
| 3277 | 782 mdb_cmd_reset(cp); |
| 0 | 783 cp->c_addrv.ad_data = mdb_alloc(nbytes, UM_SLEEP); |
| 784 bcopy(p->pipe_data, cp->c_addrv.ad_data, nbytes); | |
| 785 cp->c_addrv.ad_nelems = p->pipe_len; | |
| 786 cp->c_addrv.ad_size = p->pipe_len; | |
| 787 } | |
| 788 } | |
| 789 | |
| 790 ssize_t | |
| 791 mdb_get_xdata(const char *name, void *buf, size_t nbytes) | |
| 792 { | |
| 793 return (mdb_tgt_getxdata(mdb.m_target, name, buf, nbytes)); | |
| 794 } | |
| 795 | |
| 796 /* | |
|
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797 * Private callback structure for implementing mdb_object_iter, below. |
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798 */ |
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799 typedef struct { |
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800 mdb_object_cb_t oi_cb; |
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801 void *oi_arg; |
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802 int oi_rval; |
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803 } object_iter_arg_t; |
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804 |
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805 /*ARGSUSED*/ |
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806 static int |
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807 mdb_object_cb(void *data, const mdb_map_t *map, const char *fullname) |
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808 { |
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809 object_iter_arg_t *arg = data; |
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810 mdb_object_t obj; |
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811 |
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812 if (arg->oi_rval != 0) |
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813 return (0); |
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814 |
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815 bzero(&obj, sizeof (obj)); |
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816 obj.obj_base = map->map_base; |
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817 obj.obj_name = strbasename(map->map_name); |
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818 obj.obj_size = map->map_size; |
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819 obj.obj_fullname = fullname; |
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820 |
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821 arg->oi_rval = arg->oi_cb(&obj, arg->oi_arg); |
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822 |
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823 return (0); |
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824 } |
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825 |
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826 int |
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827 mdb_object_iter(mdb_object_cb_t cb, void *data) |
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828 { |
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829 object_iter_arg_t arg; |
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830 |
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831 arg.oi_cb = cb; |
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832 arg.oi_arg = data; |
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833 arg.oi_rval = 0; |
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834 |
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835 if (mdb_tgt_object_iter(mdb.m_target, mdb_object_cb, &arg) != 0) |
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836 return (-1); |
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837 |
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838 return (arg.oi_rval); |
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839 } |
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840 |
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841 /* |
|
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842 * Private callback structure for implementing mdb_symbol_iter, below. |
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843 */ |
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844 typedef struct { |
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845 mdb_symbol_cb_t si_cb; |
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846 void *si_arg; |
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847 int si_rval; |
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848 } symbol_iter_arg_t; |
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849 |
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850 /*ARGSUSED*/ |
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851 static int |
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852 mdb_symbol_cb(void *data, const GElf_Sym *gsym, const char *name, |
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853 const mdb_syminfo_t *sip, const char *obj) |
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854 { |
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855 symbol_iter_arg_t *arg = data; |
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856 mdb_symbol_t sym; |
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857 |
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858 if (arg->si_rval != 0) |
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859 return (0); |
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860 |
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861 bzero(&sym, sizeof (sym)); |
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862 sym.sym_name = name; |
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863 sym.sym_object = obj; |
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864 sym.sym_sym = gsym; |
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865 sym.sym_table = sip->sym_table; |
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866 sym.sym_id = sip->sym_id; |
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867 |
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868 arg->si_rval = arg->si_cb(&sym, arg->si_arg); |
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869 |
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870 return (0); |
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871 } |
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872 |
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873 int |
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874 mdb_symbol_iter(const char *obj, uint_t which, uint_t type, |
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875 mdb_symbol_cb_t cb, void *data) |
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876 { |
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877 symbol_iter_arg_t arg; |
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878 |
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879 arg.si_cb = cb; |
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880 arg.si_arg = data; |
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881 arg.si_rval = 0; |
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882 |
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883 if (mdb_tgt_symbol_iter(mdb.m_target, obj, which, type, |
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884 mdb_symbol_cb, &arg) != 0) |
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885 return (-1); |
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886 |
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887 return (arg.si_rval); |
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888 } |
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889 |
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890 /* |
| 0 | 891 * Private structure and function for implementing mdb_dumpptr on top |
| 892 * of mdb_dump_internal | |
| 893 */ | |
| 894 typedef struct dptrdat { | |
| 895 mdb_dumpptr_cb_t func; | |
| 896 void *arg; | |
| 897 } dptrdat_t; | |
| 898 | |
| 899 static ssize_t | |
| 900 mdb_dump_aux_ptr(void *buf, size_t nbyte, uint64_t offset, void *arg) | |
| 901 { | |
| 902 dptrdat_t *dat = arg; | |
| 903 | |
| 904 return (dat->func(buf, nbyte, offset, dat->arg)); | |
| 905 } | |
| 906 | |
| 907 /* | |
| 908 * Private structure and function for handling callbacks which return | |
| 909 * EMDB_PARTIAL | |
| 910 */ | |
| 911 typedef struct d64dat { | |
| 912 mdb_dump64_cb_t func; | |
| 913 void *arg; | |
| 914 } d64dat_t; | |
| 915 | |
| 916 static ssize_t | |
| 917 mdb_dump_aux_partial(void *buf, size_t nbyte, uint64_t offset, void *arg) | |
| 918 { | |
| 919 d64dat_t *dat = arg; | |
| 920 int result; | |
| 921 int count; | |
| 922 | |
| 923 result = dat->func(buf, nbyte, offset, dat->arg); | |
| 924 if (result == -1 && errno == EMDB_PARTIAL) { | |
| 925 count = 0; | |
| 926 do { | |
| 927 result = dat->func((char *)buf + count, 1, | |
| 928 offset + count, dat->arg); | |
| 929 if (result == 1) | |
| 930 count++; | |
| 931 } while (count < nbyte && result == 1); | |
| 932 if (count) | |
| 933 result = count; | |
| 934 } | |
| 935 | |
| 936 return (result); | |
| 937 } | |
| 938 | |
| 939 int | |
| 940 mdb_dumpptr(uintptr_t addr, size_t len, uint_t flags, mdb_dumpptr_cb_t fp, | |
| 941 void *arg) | |
| 942 { | |
| 943 dptrdat_t dat; | |
| 944 d64dat_t dat64; | |
| 945 | |
| 946 dat.func = fp; | |
| 947 dat.arg = arg; | |
| 948 dat64.func = mdb_dump_aux_ptr; | |
| 949 dat64.arg = &dat; | |
| 950 return (mdb_dump_internal(addr, len, flags, mdb_dump_aux_partial, | |
| 951 &dat64, sizeof (uintptr_t))); | |
| 952 } | |
| 953 | |
| 954 int | |
| 955 mdb_dump64(uint64_t addr, uint64_t len, uint_t flags, mdb_dump64_cb_t fp, | |
| 956 void *arg) | |
| 957 { | |
| 958 d64dat_t dat64; | |
| 959 | |
| 960 dat64.func = fp; | |
| 961 dat64.arg = arg; | |
| 962 return (mdb_dump_internal(addr, len, flags, mdb_dump_aux_partial, | |
| 963 &dat64, sizeof (uint64_t))); | |
| 964 } | |
| 965 | |
| 966 int | |
| 967 mdb_get_state(void) | |
| 968 { | |
| 969 mdb_tgt_status_t ts; | |
| 970 | |
| 971 (void) mdb_tgt_status(mdb.m_target, &ts); | |
| 972 | |
| 973 return (ts.st_state); | |
| 974 } | |
| 975 | |
| 976 void * | |
| 977 mdb_callback_add(int class, mdb_callback_f fp, void *arg) | |
| 978 { | |
| 979 mdb_module_t *m; | |
| 980 | |
| 981 if (class != MDB_CALLBACK_STCHG && class != MDB_CALLBACK_PROMPT) { | |
| 982 (void) set_errno(EINVAL); | |
| 983 return (NULL); | |
| 984 } | |
| 985 | |
| 986 if (mdb.m_lmod != NULL) | |
| 987 m = mdb.m_lmod; | |
| 988 else | |
| 989 m = mdb.m_frame->f_cp->c_dcmd->idc_modp; | |
| 990 | |
| 991 return (mdb_callb_add(m, class, fp, arg)); | |
| 992 } | |
| 993 | |
| 994 void | |
| 995 mdb_callback_remove(void *hdl) | |
| 996 { | |
| 997 mdb_callb_remove(hdl); | |
| 998 } |