1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 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 */ 21 22 /* 23 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. 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 } 189 190 int 191 mdb_getareg(mdb_tid_t tid, const char *rname, mdb_reg_t *rp) 192 { 193 return (mdb_tgt_getareg(mdb.m_target, tid, rname, rp)); 194 } 195 196 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 } 512 513 int 514 mdb_pwalk(const char *name, mdb_walk_cb_t func, void *data, uintptr_t addr) 515 { 516 mdb_iwalker_t *iwp = mdb_walker_lookup(name); 517 518 if (func == NULL) 519 return (set_errno(EINVAL)); 520 521 if (iwp != NULL) 522 return (walk_common(mdb_wcb_create(iwp, func, data, addr))); 523 524 return (-1); /* errno is set for us */ 525 } 526 527 int 528 mdb_walk(const char *name, mdb_walk_cb_t func, void *data) 529 { 530 return (mdb_pwalk(name, func, data, NULL)); 531 } 532 533 /*ARGSUSED*/ 534 static int 535 walk_dcmd(uintptr_t addr, const void *ignored, dcmd_walk_arg_t *dwp) 536 { 537 int status = mdb_call_idcmd(dwp->dw_dcmd, addr, 1, dwp->dw_flags, 538 &dwp->dw_argv, NULL, NULL); 539 540 if (status == DCMD_USAGE || status == DCMD_ABORT) 541 return (WALK_ERR); 542 543 dwp->dw_flags &= ~DCMD_LOOPFIRST; 544 return (WALK_NEXT); 545 } 546 547 int 548 mdb_pwalk_dcmd(const char *wname, const char *dcname, 549 int argc, const mdb_arg_t *argv, uintptr_t addr) 550 { 551 mdb_argvec_t args; 552 dcmd_walk_arg_t dw; 553 mdb_iwalker_t *iwp; 554 mdb_wcb_t *wcb; 555 int status; 556 557 if (wname == NULL || dcname == NULL) 558 return (set_errno(EINVAL)); 559 560 if ((dw.dw_dcmd = mdb_dcmd_lookup(dcname)) == NULL) 561 return (-1); /* errno is set for us */ 562 563 if ((iwp = mdb_walker_lookup(wname)) == NULL) 564 return (-1); /* errno is set for us */ 565 566 args.a_data = (mdb_arg_t *)argv; 567 args.a_nelems = args.a_size = argc; 568 569 mdb_argvec_create(&dw.dw_argv); 570 mdb_argvec_copy(&dw.dw_argv, &args); 571 dw.dw_flags = DCMD_LOOP | DCMD_LOOPFIRST | DCMD_ADDRSPEC; 572 573 wcb = mdb_wcb_create(iwp, (mdb_walk_cb_t)walk_dcmd, &dw, addr); 574 status = walk_common(wcb); 575 576 mdb_argvec_zero(&dw.dw_argv); 577 mdb_argvec_destroy(&dw.dw_argv); 578 579 return (status); 580 } 581 582 int 583 mdb_walk_dcmd(const char *wname, const char *dcname, 584 int argc, const mdb_arg_t *argv) 585 { 586 return (mdb_pwalk_dcmd(wname, dcname, argc, argv, NULL)); 587 } 588 589 /*ARGSUSED*/ 590 static int 591 layered_walk_step(uintptr_t addr, const void *data, mdb_wcb_t *wcb) 592 { 593 /* 594 * Prior to calling the top-level walker's step function, reset its 595 * mdb_walk_state_t walk_addr and walk_layer members to refer to the 596 * target virtual address and data buffer of the underlying object. 597 */ 598 wcb->w_state.walk_addr = addr; 599 wcb->w_state.walk_layer = data; 600 601 return (wcb->w_walker->iwlk_step(&wcb->w_state)); 602 } 603 604 int 605 mdb_layered_walk(const char *wname, mdb_walk_state_t *wsp) 606 { 607 mdb_wcb_t *cwcb, *wcb; 608 mdb_iwalker_t *iwp; 609 610 if (wname == NULL || wsp == NULL) 611 return (set_errno(EINVAL)); 612 613 if ((iwp = mdb_walker_lookup(wname)) == NULL) 614 return (-1); /* errno is set for us */ 615 616 if ((cwcb = mdb_wcb_from_state(wsp)) == NULL) 617 return (set_errno(EMDB_BADWCB)); 618 619 if (cwcb->w_walker == iwp) 620 return (set_errno(EMDB_WALKLOOP)); 621 622 wcb = mdb_wcb_create(iwp, (mdb_walk_cb_t)layered_walk_step, 623 cwcb, wsp->walk_addr); 624 625 if (iwp->iwlk_init(&wcb->w_state) != WALK_NEXT) { 626 mdb_wcb_destroy(wcb); 627 return (set_errno(EMDB_WALKINIT)); 628 } 629 630 wcb->w_inited = TRUE; 631 632 mdb_dprintf(MDB_DBG_WALK, "added %s`%s as %s`%s layer\n", 633 iwp->iwlk_modp->mod_name, iwp->iwlk_name, 634 cwcb->w_walker->iwlk_modp->mod_name, cwcb->w_walker->iwlk_name); 635 636 if (cwcb->w_lyr_head != NULL) { 637 for (cwcb = cwcb->w_lyr_head; cwcb->w_lyr_link != NULL; ) 638 cwcb = cwcb->w_lyr_link; 639 cwcb->w_lyr_link = wcb; 640 } else 641 cwcb->w_lyr_head = wcb; 642 643 return (0); 644 } 645 646 int 647 mdb_call_dcmd(const char *name, uintptr_t dot, uint_t flags, 648 int argc, const mdb_arg_t *argv) 649 { 650 mdb_idcmd_t *idcp; 651 mdb_argvec_t args; 652 int status; 653 654 if (name == NULL || argc < 0) 655 return (set_errno(EINVAL)); 656 657 if ((idcp = mdb_dcmd_lookup(name)) == NULL) 658 return (-1); /* errno is set for us */ 659 660 args.a_data = (mdb_arg_t *)argv; 661 args.a_nelems = args.a_size = argc; 662 status = mdb_call_idcmd(idcp, dot, 1, flags, &args, NULL, NULL); 663 664 if (status == DCMD_ERR || status == DCMD_ABORT) 665 return (set_errno(EMDB_DCFAIL)); 666 667 if (status == DCMD_USAGE) 668 return (set_errno(EMDB_DCUSAGE)); 669 670 return (0); 671 } 672 673 int 674 mdb_add_walker(const mdb_walker_t *wp) 675 { 676 mdb_module_t *mp; 677 678 if (mdb.m_lmod == NULL) { 679 mdb_cmd_t *cp = mdb.m_frame->f_cp; 680 mp = cp->c_dcmd->idc_modp; 681 } else 682 mp = mdb.m_lmod; 683 684 return (mdb_module_add_walker(mp, wp, 0)); 685 } 686 687 int 688 mdb_remove_walker(const char *name) 689 { 690 mdb_module_t *mp; 691 692 if (mdb.m_lmod == NULL) { 693 mdb_cmd_t *cp = mdb.m_frame->f_cp; 694 mp = cp->c_dcmd->idc_modp; 695 } else 696 mp = mdb.m_lmod; 697 698 return (mdb_module_remove_walker(mp, name)); 699 } 700 701 void 702 mdb_get_pipe(mdb_pipe_t *p) 703 { 704 mdb_cmd_t *cp = mdb.m_frame->f_cp; 705 mdb_addrvec_t *adp = &cp->c_addrv; 706 707 if (p == NULL) { 708 warn("dcmd failure: mdb_get_pipe invoked with NULL pointer\n"); 709 longjmp(mdb.m_frame->f_pcb, MDB_ERR_API); 710 } 711 712 if (adp->ad_nelems != 0) { 713 ASSERT(adp->ad_ndx != 0); 714 p->pipe_data = &adp->ad_data[adp->ad_ndx - 1]; 715 p->pipe_len = adp->ad_nelems - adp->ad_ndx + 1; 716 adp->ad_ndx = adp->ad_nelems; 717 } else { 718 p->pipe_data = NULL; 719 p->pipe_len = 0; 720 } 721 } 722 723 void 724 mdb_set_pipe(const mdb_pipe_t *p) 725 { 726 mdb_cmd_t *cp = mdb.m_frame->f_pcmd; 727 728 if (p == NULL) { 729 warn("dcmd failure: mdb_set_pipe invoked with NULL pointer\n"); 730 longjmp(mdb.m_frame->f_pcb, MDB_ERR_API); 731 } 732 733 if (cp != NULL) { 734 size_t nbytes = sizeof (uintptr_t) * p->pipe_len; 735 736 mdb_cmd_reset(cp); 737 cp->c_addrv.ad_data = mdb_alloc(nbytes, UM_SLEEP); 738 bcopy(p->pipe_data, cp->c_addrv.ad_data, nbytes); 739 cp->c_addrv.ad_nelems = p->pipe_len; 740 cp->c_addrv.ad_size = p->pipe_len; 741 } 742 } 743 744 ssize_t 745 mdb_get_xdata(const char *name, void *buf, size_t nbytes) 746 { 747 return (mdb_tgt_getxdata(mdb.m_target, name, buf, nbytes)); 748 } 749 750 /* 751 * Private callback structure for implementing mdb_object_iter, below. 752 */ 753 typedef struct { 754 mdb_object_cb_t oi_cb; 755 void *oi_arg; 756 int oi_rval; 757 } object_iter_arg_t; 758 759 /*ARGSUSED*/ 760 static int 761 mdb_object_cb(void *data, const mdb_map_t *map, const char *fullname) 762 { 763 object_iter_arg_t *arg = data; 764 mdb_object_t obj; 765 766 if (arg->oi_rval != 0) 767 return (0); 768 769 bzero(&obj, sizeof (obj)); 770 obj.obj_base = map->map_base; 771 obj.obj_name = strbasename(map->map_name); 772 obj.obj_size = map->map_size; 773 obj.obj_fullname = fullname; 774 775 arg->oi_rval = arg->oi_cb(&obj, arg->oi_arg); 776 777 return (0); 778 } 779 780 int 781 mdb_object_iter(mdb_object_cb_t cb, void *data) 782 { 783 object_iter_arg_t arg; 784 785 arg.oi_cb = cb; 786 arg.oi_arg = data; 787 arg.oi_rval = 0; 788 789 if (mdb_tgt_object_iter(mdb.m_target, mdb_object_cb, &arg) != 0) 790 return (-1); 791 792 return (arg.oi_rval); 793 } 794 795 /* 796 * Private structure and function for implementing mdb_dumpptr on top 797 * of mdb_dump_internal 798 */ 799 typedef struct dptrdat { 800 mdb_dumpptr_cb_t func; 801 void *arg; 802 } dptrdat_t; 803 804 static ssize_t 805 mdb_dump_aux_ptr(void *buf, size_t nbyte, uint64_t offset, void *arg) 806 { 807 dptrdat_t *dat = arg; 808 809 return (dat->func(buf, nbyte, offset, dat->arg)); 810 } 811 812 /* 813 * Private structure and function for handling callbacks which return 814 * EMDB_PARTIAL 815 */ 816 typedef struct d64dat { 817 mdb_dump64_cb_t func; 818 void *arg; 819 } d64dat_t; 820 821 static ssize_t 822 mdb_dump_aux_partial(void *buf, size_t nbyte, uint64_t offset, void *arg) 823 { 824 d64dat_t *dat = arg; 825 int result; 826 int count; 827 828 result = dat->func(buf, nbyte, offset, dat->arg); 829 if (result == -1 && errno == EMDB_PARTIAL) { 830 count = 0; 831 do { 832 result = dat->func((char *)buf + count, 1, 833 offset + count, dat->arg); 834 if (result == 1) 835 count++; 836 } while (count < nbyte && result == 1); 837 if (count) 838 result = count; 839 } 840 841 return (result); 842 } 843 844 int 845 mdb_dumpptr(uintptr_t addr, size_t len, uint_t flags, mdb_dumpptr_cb_t fp, 846 void *arg) 847 { 848 dptrdat_t dat; 849 d64dat_t dat64; 850 851 dat.func = fp; 852 dat.arg = arg; 853 dat64.func = mdb_dump_aux_ptr; 854 dat64.arg = &dat; 855 return (mdb_dump_internal(addr, len, flags, mdb_dump_aux_partial, 856 &dat64, sizeof (uintptr_t))); 857 } 858 859 int 860 mdb_dump64(uint64_t addr, uint64_t len, uint_t flags, mdb_dump64_cb_t fp, 861 void *arg) 862 { 863 d64dat_t dat64; 864 865 dat64.func = fp; 866 dat64.arg = arg; 867 return (mdb_dump_internal(addr, len, flags, mdb_dump_aux_partial, 868 &dat64, sizeof (uint64_t))); 869 } 870 871 int 872 mdb_get_state(void) 873 { 874 mdb_tgt_status_t ts; 875 876 (void) mdb_tgt_status(mdb.m_target, &ts); 877 878 return (ts.st_state); 879 } 880 881 void * 882 mdb_callback_add(int class, mdb_callback_f fp, void *arg) 883 { 884 mdb_module_t *m; 885 886 if (class != MDB_CALLBACK_STCHG && class != MDB_CALLBACK_PROMPT) { 887 (void) set_errno(EINVAL); 888 return (NULL); 889 } 890 891 if (mdb.m_lmod != NULL) 892 m = mdb.m_lmod; 893 else 894 m = mdb.m_frame->f_cp->c_dcmd->idc_modp; 895 896 return (mdb_callb_add(m, class, fp, arg)); 897 } 898 899 void 900 mdb_callback_remove(void *hdl) 901 { 902 mdb_callb_remove(hdl); 903 } 904