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) 2001, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright (c) 2012 by Delphix. All rights reserved. 25 * Copyright 2016, Joyent, Inc. 26 */ 27 28 #include <sys/mdb_modapi.h> 29 #include <mdb/mdb_whatis.h> 30 #include <mdb/mdb_ctf.h> 31 #include <procfs.h> 32 #include <ucontext.h> 33 #include <siginfo.h> 34 #include <signal.h> 35 #include <setjmp.h> 36 #include <string.h> 37 #include <thr_uberdata.h> 38 #include "findstack.h" 39 40 static const char * 41 stack_flags(const stack_t *sp) 42 { 43 static char buf[32]; 44 45 if (sp->ss_flags == 0) 46 (void) strcpy(buf, " 0"); 47 else if (sp->ss_flags & ~(SS_ONSTACK | SS_DISABLE)) 48 (void) mdb_snprintf(buf, sizeof (buf), " 0x%x", sp->ss_flags); 49 else { 50 buf[0] = '\0'; 51 if (sp->ss_flags & SS_ONSTACK) 52 (void) strcat(buf, "|ONSTACK"); 53 if (sp->ss_flags & SS_DISABLE) 54 (void) strcat(buf, "|DISABLE"); 55 } 56 57 return (buf + 1); 58 } 59 60 /*ARGSUSED*/ 61 static int 62 d_jmp_buf(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 63 { 64 jmp_buf jb; 65 const ulong_t *b = (const ulong_t *)jb; 66 67 if (argc != 0) 68 return (DCMD_USAGE); 69 70 if (mdb_vread(&jb, sizeof (jb), addr) != sizeof (jb)) { 71 mdb_warn("failed to read jmp_buf at %p", addr); 72 return (DCMD_ERR); 73 } 74 75 #if defined(__sparc) 76 mdb_printf(" %%sp = 0x%lx\n", b[1]); 77 mdb_printf(" %%pc = 0x%lx %lA\n", b[2], b[2]); 78 mdb_printf(" %%fp = 0x%lx\n", b[3]); 79 mdb_printf(" %%i7 = 0x%lx %lA\n", b[4], b[4]); 80 #elif defined(__amd64) 81 mdb_printf(" %%rbx = 0x%lx\n", b[0]); 82 mdb_printf(" %%r12 = 0x%lx\n", b[1]); 83 mdb_printf(" %%r13 = 0x%lx\n", b[2]); 84 mdb_printf(" %%r14 = 0x%lx\n", b[3]); 85 mdb_printf(" %%r15 = 0x%lx\n", b[4]); 86 mdb_printf(" %%rbp = 0x%lx\n", b[5]); 87 mdb_printf(" %%rsp = 0x%lx\n", b[6]); 88 mdb_printf(" %%rip = 0x%lx %lA\n", b[7], b[7]); 89 #elif defined(__i386) 90 mdb_printf(" %%ebx = 0x%lx\n", b[0]); 91 mdb_printf(" %%esi = 0x%lx\n", b[1]); 92 mdb_printf(" %%edi = 0x%lx\n", b[2]); 93 mdb_printf(" %%ebp = 0x%lx\n", b[3]); 94 mdb_printf(" %%esp = 0x%lx\n", b[4]); 95 mdb_printf(" %%eip = 0x%lx %lA\n", b[5], b[5]); 96 #endif 97 return (DCMD_OK); 98 } 99 100 const mdb_bitmask_t uc_flags_bits[] = { 101 { "UC_SIGMASK", UC_SIGMASK, UC_SIGMASK }, 102 { "UC_STACK", UC_STACK, UC_STACK }, 103 { "UC_CPU", UC_CPU, UC_CPU }, 104 { "UC_FPU", UC_FPU, UC_FPU }, 105 #if defined(UC_INTR) 106 { "UC_INTR", UC_INTR, UC_INTR }, 107 #endif 108 #if defined(UC_ASR) 109 { "UC_ASR", UC_ASR, UC_ASR }, 110 #endif 111 { NULL, 0, 0 } 112 }; 113 114 /*ARGSUSED*/ 115 static int 116 d_ucontext(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 117 { 118 ucontext_t uc; 119 120 if (argc != 0) 121 return (DCMD_USAGE); 122 123 if (mdb_vread(&uc, sizeof (uc), addr) != sizeof (uc)) { 124 mdb_warn("failed to read ucontext at %p", addr); 125 return (DCMD_ERR); 126 } 127 128 mdb_printf(" flags = 0x%lx <%b>\n", uc.uc_flags, 129 (uint_t)uc.uc_flags, uc_flags_bits); 130 mdb_printf(" link = 0x%p\n", uc.uc_link); 131 mdb_printf(" sigmask = 0x%08x 0x%08x 0x%08x 0x%08x\n", 132 uc.uc_sigmask.__sigbits[0], uc.uc_sigmask.__sigbits[1], 133 uc.uc_sigmask.__sigbits[2], uc.uc_sigmask.__sigbits[3]); 134 mdb_printf(" stack = sp 0x%p size 0x%lx flags %s\n", 135 uc.uc_stack.ss_sp, uc.uc_stack.ss_size, stack_flags(&uc.uc_stack)); 136 mdb_printf(" mcontext = 0x%p\n", 137 addr + OFFSETOF(ucontext_t, uc_mcontext)); 138 139 return (DCMD_OK); 140 } 141 142 /*ARGSUSED*/ 143 static int 144 d_sigjmp_buf(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 145 { 146 #if defined(__sparc) 147 struct { 148 int sjs_flags; 149 greg_t sjs_sp; 150 greg_t sjs_pc; 151 greg_t sjs_fp; 152 greg_t sjs_i7; 153 ucontext_t *sjs_uclink; 154 ulong_t sjs_pad[_JBLEN - 6]; 155 sigset_t sjs_sigmask; 156 #if defined(_LP64) 157 greg_t sjs_asi; 158 greg_t sjs_fprs; 159 #endif 160 stack_t sjs_stack; 161 } s; 162 163 if (argc != 0) 164 return (DCMD_USAGE); 165 166 if (mdb_vread(&s, sizeof (s), addr) != sizeof (s)) { 167 mdb_warn("failed to read sigjmp_buf at %p", addr); 168 return (DCMD_ERR); 169 } 170 171 mdb_printf(" flags = 0x%x\n", s.sjs_flags); 172 mdb_printf(" %%sp = 0x%lx %lA\n", s.sjs_sp, s.sjs_sp); 173 mdb_printf(" %%pc = 0x%lx %lA\n", s.sjs_pc, s.sjs_pc); 174 mdb_printf(" %%fp = 0x%lx %lA\n", s.sjs_fp, s.sjs_fp); 175 mdb_printf(" %%i7 = 0x%lx %lA\n", s.sjs_i7, s.sjs_i7); 176 mdb_printf(" uclink = %p\n", s.sjs_uclink); 177 mdb_printf(" sigset = 0x%08x 0x%08x 0x%08x 0x%08x\n", 178 s.sjs_sigmask.__sigbits[0], s.sjs_sigmask.__sigbits[1], 179 s.sjs_sigmask.__sigbits[2], s.sjs_sigmask.__sigbits[3]); 180 #if defined(_LP64) 181 mdb_printf(" %%asi = 0x%lx\n", s.sjs_asi); 182 mdb_printf(" %%fprs = 0x%lx\n", s.sjs_fprs); 183 #endif 184 mdb_printf(" stack = sp 0x%p size 0x%lx flags %s\n", 185 s.sjs_stack.ss_sp, s.sjs_stack.ss_size, stack_flags(&s.sjs_stack)); 186 187 return (DCMD_OK); 188 189 #elif defined(__i386) || defined(__amd64) 190 return (d_ucontext(addr, flags, argc, argv)); 191 #endif 192 } 193 194 /*ARGSUSED*/ 195 static int 196 d_siginfo(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 197 { 198 static const char *const msname[] = { 199 "USER", "SYSTEM", "TRAP", "TFAULT", "DFAULT", "KFAULT", 200 "USER_LOCK", "SLEEP", "WAIT_CPU", "STOPPED" 201 }; 202 203 char signame[SIG2STR_MAX]; 204 siginfo_t si; 205 int i; 206 207 if (argc != 0) 208 return (DCMD_USAGE); 209 210 if (mdb_vread(&si, sizeof (si), addr) != sizeof (si)) { 211 mdb_warn("failed to read siginfo at %p", addr); 212 return (DCMD_ERR); 213 } 214 215 if (sig2str(si.si_signo, signame) == -1) 216 (void) strcpy(signame, "unknown"); 217 218 mdb_printf(" signal %5d (%s)\n", si.si_signo, signame); 219 mdb_printf(" code %5d (", si.si_code); 220 221 switch (si.si_code) { 222 case SI_NOINFO: 223 mdb_printf("no info"); 224 break; 225 case SI_DTRACE: 226 mdb_printf("from DTrace raise() action"); 227 break; 228 case SI_RCTL: 229 mdb_printf("from rctl action"); 230 break; 231 case SI_USER: 232 mdb_printf("user generated via kill"); 233 break; 234 case SI_LWP: 235 mdb_printf("user generated via lwp_kill"); 236 break; 237 case SI_QUEUE: 238 mdb_printf("user generated via sigqueue"); 239 break; 240 case SI_TIMER: 241 mdb_printf("from timer expiration"); 242 break; 243 case SI_ASYNCIO: 244 mdb_printf("from async i/o completion"); 245 break; 246 case SI_MESGQ: 247 mdb_printf("from message arrival"); 248 break; 249 default: 250 if (SI_FROMUSER(&si)) 251 mdb_printf("from user process"); 252 else 253 mdb_printf("from kernel"); 254 } 255 256 mdb_printf(")\n errno %5d (%s)\n", 257 si.si_errno, strerror(si.si_errno)); 258 259 if (si.si_code == SI_USER || si.si_code == SI_QUEUE) { 260 mdb_printf(" signal sent from PID %d (uid %d)\n", 261 si.si_pid, si.si_uid); 262 } 263 264 if (si.si_code == SI_QUEUE) { 265 mdb_printf(" signal value = 0t%d / %p\n", 266 si.si_value.sival_int, si.si_value.sival_ptr); 267 } 268 269 switch (si.si_signo) { 270 case SIGCLD: 271 mdb_printf(" signal sent from child PID %d (uid %d)\n", 272 si.si_pid, si.si_uid); 273 mdb_printf(" usr time = 0t%ld ticks, sys time = 0t%ld ticks\n", 274 si.si_utime, si.si_stime); 275 mdb_printf(" wait status = 0x%x\n", si.si_status); 276 break; 277 278 case SIGSEGV: 279 case SIGBUS: 280 case SIGILL: 281 case SIGTRAP: 282 case SIGFPE: 283 mdb_printf(" fault address = 0x%p\n trapno = %d\n", 284 si.si_addr, si.si_trapno); 285 mdb_printf(" instruction address = 0x%p %lA\n", 286 si.si_pc, si.si_pc); 287 break; 288 289 case SIGPOLL: 290 case SIGXFSZ: 291 mdb_printf(" fd = %d band = 0x%lx\n", 292 si.si_fd, si.si_band); 293 break; 294 295 case SIGPROF: 296 mdb_printf(" last fault address = 0x%p fault type = %d\n", 297 si.si_faddr, si.si_fault); 298 mdb_printf(" timestamp = 0t%ld sec 0t%ld nsec\n", 299 si.si_tstamp.tv_sec, si.si_tstamp.tv_nsec); 300 301 if (si.__data.__prof.__syscall != 0) { 302 mdb_printf(" system call %d (", si.si_syscall); 303 if (si.si_nsysarg > 0) { 304 mdb_printf("%lx", si.si_sysarg[0]); 305 for (i = 1; i < si.si_nsysarg; i++) 306 mdb_printf(", %lx", si.si_sysarg[i]); 307 } 308 mdb_printf(" )\n"); 309 } 310 311 for (i = 0; i < sizeof (msname) / sizeof (msname[0]); i++) { 312 mdb_printf(" mstate[\"%s\"] = %d\n", 313 msname[i], si.si_mstate[i]); 314 } 315 break; 316 } 317 318 return (DCMD_OK); 319 } 320 321 static int 322 uc_walk_step(mdb_walk_state_t *wsp) 323 { 324 uintptr_t addr = wsp->walk_addr; 325 ucontext_t uc; 326 327 if (addr == NULL) 328 return (WALK_DONE); 329 330 if (mdb_vread(&uc, sizeof (uc), addr) != sizeof (uc)) { 331 mdb_warn("failed to read ucontext at %p", addr); 332 return (WALK_ERR); 333 } 334 335 wsp->walk_addr = (uintptr_t)uc.uc_link; 336 return (wsp->walk_callback(addr, &uc, wsp->walk_cbdata)); 337 } 338 339 static int 340 oldc_walk_init(mdb_walk_state_t *wsp) 341 { 342 ssize_t nbytes = mdb_get_xdata("lwpstatus", NULL, 0); 343 344 if (nbytes <= 0) { 345 mdb_warn("lwpstatus information not available"); 346 return (WALK_ERR); 347 } 348 349 if (wsp->walk_addr != NULL) { 350 mdb_warn("walker only supports global walk\n"); 351 return (WALK_ERR); 352 } 353 354 wsp->walk_addr = nbytes; /* Use walk_addr to track size */ 355 wsp->walk_data = mdb_alloc(nbytes, UM_SLEEP); 356 357 if (mdb_get_xdata("lwpstatus", wsp->walk_data, nbytes) != nbytes) { 358 mdb_warn("failed to read lwpstatus information"); 359 mdb_free(wsp->walk_data, nbytes); 360 return (WALK_ERR); 361 } 362 363 wsp->walk_arg = wsp->walk_data; /* Use walk_arg to track pointer */ 364 return (WALK_NEXT); 365 } 366 367 static int 368 oldc_walk_step(mdb_walk_state_t *wsp) 369 { 370 const lwpstatus_t *lsp, *end; 371 372 end = (const lwpstatus_t *)((uintptr_t)wsp->walk_data + wsp->walk_addr); 373 lsp = wsp->walk_arg; 374 375 wsp->walk_arg = (void *)(lsp + 1); 376 377 if (lsp < end) { 378 uintptr_t addr = lsp->pr_oldcontext; 379 ucontext_t uc; 380 381 if (addr == NULL) 382 return (WALK_NEXT); 383 384 if (mdb_vread(&uc, sizeof (uc), addr) != sizeof (uc)) { 385 mdb_warn("failed to read ucontext at %p", addr); 386 return (WALK_NEXT); 387 } 388 389 return (wsp->walk_callback(addr, &uc, wsp->walk_cbdata)); 390 } 391 392 return (WALK_DONE); 393 } 394 395 static void 396 oldc_walk_fini(mdb_walk_state_t *wsp) 397 { 398 mdb_free(wsp->walk_data, wsp->walk_addr); /* walk_addr has size */ 399 } 400 401 /* 402 * ==================== threads ========================== 403 * These are the interfaces that used to require libthread. 404 * Now, libthread has been folded into libc. 405 * ======================================================= 406 */ 407 408 /* 409 * prt_addr() is called up to three times to generate arguments for 410 * one call to mdb_printf(). We must return at least three different 411 * pointers to static storage for consecutive calls to prt_addr(). 412 */ 413 static const char * 414 prt_addr(void *addr, int pad) 415 { 416 static char buffer[4][24]; 417 static int ix = 0; 418 char *buf; 419 420 if (ix == 4) /* use buffers in sequence: 0, 1, 2, 3 */ 421 ix = 0; 422 buf = buffer[ix++]; 423 if (addr == NULL) 424 return (pad? "<NULL> " : "<NULL>"); 425 else { 426 #ifdef _LP64 427 (void) mdb_snprintf(buf, sizeof (buffer[0]), "0x%016lx", addr); 428 if (pad) 429 (void) strcpy(buf + 18, " "); 430 #else 431 (void) mdb_snprintf(buf, sizeof (buffer[0]), "0x%08lx", addr); 432 if (pad) 433 (void) strcpy(buf + 10, " "); 434 #endif /* _LP64 */ 435 return (buf); 436 } 437 } 438 439 #define HD(str) mdb_printf(" " str "\n") 440 #define OFFSTR "+0x%-7lx " 441 #define OFFSET(member) ((size_t)OFFSETOF(ulwp_t, member)) 442 443 /*ARGSUSED*/ 444 static int 445 d_ulwp(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 446 { 447 ulwp_t ulwp; 448 449 if (argc != 0 || !(flags & DCMD_ADDRSPEC)) 450 return (DCMD_USAGE); 451 452 if (mdb_vread(&ulwp, sizeof (ulwp), addr) != sizeof (ulwp) && 453 (bzero(&ulwp, sizeof (ulwp)), 454 mdb_vread(&ulwp, REPLACEMENT_SIZE, addr)) != REPLACEMENT_SIZE) { 455 mdb_warn("failed to read ulwp at 0x%p", addr); 456 return (DCMD_ERR); 457 } 458 459 mdb_printf("%#a\n", addr); 460 461 HD("self uberdata"); 462 mdb_printf(OFFSTR "%s %s\n", 463 OFFSET(ul_self), 464 prt_addr(ulwp.ul_self, 1), 465 prt_addr(ulwp.ul_uberdata, 0)); 466 467 HD("tlsent ntlsent"); 468 mdb_printf(OFFSTR "%s %ld\n", 469 OFFSET(ul_tlsent), 470 prt_addr(ulwp.ul_tlsent, 1), 471 ulwp.ul_ntlsent); 472 473 HD("forw back next"); 474 mdb_printf(OFFSTR "%s %s %s\n", 475 OFFSET(ul_forw), 476 prt_addr(ulwp.ul_forw, 1), 477 prt_addr(ulwp.ul_back, 1), 478 prt_addr(ulwp.ul_next, 0)); 479 480 HD("hash rval stk"); 481 mdb_printf(OFFSTR "%s %s %s\n", 482 OFFSET(ul_hash), 483 prt_addr(ulwp.ul_hash, 1), 484 prt_addr(ulwp.ul_rval, 1), 485 prt_addr(ulwp.ul_stk, 0)); 486 487 HD("mapsiz guardsize stktop stksiz"); 488 mdb_printf(OFFSTR "%-10ld %-10ld %s %ld\n", 489 OFFSET(ul_mapsiz), 490 ulwp.ul_mapsiz, 491 ulwp.ul_guardsize, 492 prt_addr((void *)ulwp.ul_stktop, 1), 493 ulwp.ul_stksiz); 494 495 HD("ustack.ss_sp ustack.ss_size ustack.ss_flags"); 496 mdb_printf(OFFSTR "%s %-21ld %s\n", 497 OFFSET(ul_ustack.ss_sp), 498 prt_addr(ulwp.ul_ustack.ss_sp, 1), 499 ulwp.ul_ustack.ss_size, 500 stack_flags(&ulwp.ul_ustack)); 501 502 HD("ix lwpid pri epri policy cid"); 503 mdb_printf(OFFSTR "%-10d %-10d %-10d %-10d %-10d %d\n", 504 OFFSET(ul_ix), 505 ulwp.ul_ix, 506 ulwp.ul_lwpid, 507 ulwp.ul_pri, 508 ulwp.ul_epri, 509 ulwp.ul_policy, 510 ulwp.ul_cid); 511 512 HD("cursig pleasestop stop signalled dead unwind"); 513 mdb_printf(OFFSTR "%-10d ", 514 OFFSET(ul_cursig), 515 ulwp.ul_cursig); 516 mdb_printf(ulwp.ul_pleasestop? "0x%-8x " : "%-10d ", 517 ulwp.ul_pleasestop); 518 mdb_printf(ulwp.ul_stop? "0x%-8x " : "%-10d ", 519 ulwp.ul_stop); 520 mdb_printf("%-10d %-10d %d\n", 521 ulwp.ul_signalled, 522 ulwp.ul_dead, 523 ulwp.ul_unwind); 524 525 HD("detached writer stopping can'prolog preempt savpreempt"); 526 mdb_printf(OFFSTR "%-10d %-10d %-10d %-10d %-10d %d\n", 527 OFFSET(ul_detached), 528 ulwp.ul_detached, 529 ulwp.ul_writer, 530 ulwp.ul_stopping, 531 ulwp.ul_cancel_prologue, 532 ulwp.ul_preempt, 533 ulwp.ul_savpreempt); 534 535 HD("sigsuspend main fork primarymap m'spinners d'noreserv"); 536 mdb_printf(OFFSTR "%-10d %-10d %-10d %-10d %-10d %d\n", 537 OFFSET(ul_sigsuspend), 538 ulwp.ul_sigsuspend, 539 ulwp.ul_main, 540 ulwp.ul_fork, 541 ulwp.ul_primarymap, 542 ulwp.ul_max_spinners, 543 ulwp.ul_door_noreserve); 544 545 HD("queue_fifo c'w'defer e'detect' async_safe rt rtqueued"); 546 mdb_printf(OFFSTR "%-10d %-10d %-10d %-10d %-10d %d\n", 547 OFFSET(ul_queue_fifo), 548 ulwp.ul_queue_fifo, 549 ulwp.ul_cond_wait_defer, 550 ulwp.ul_error_detection, 551 ulwp.ul_async_safe, 552 ulwp.ul_rt, 553 ulwp.ul_rtqueued); 554 555 HD("misaligned adapt'spin queue_spin critical sigdefer vfork"); 556 mdb_printf(OFFSTR "%-10d %-10d %-10d %-10d %-10d %d\n", 557 OFFSET(ul_misaligned), 558 ulwp.ul_misaligned, 559 ulwp.ul_adaptive_spin, 560 ulwp.ul_queue_spin, 561 ulwp.ul_critical, 562 ulwp.ul_sigdefer, 563 ulwp.ul_vfork); 564 565 HD("cancelable c'pending c'disabled c'async save_async mutator"); 566 mdb_printf(OFFSTR "%-10d %-10d %-10d %-10d %-10d %d\n", 567 OFFSET(ul_cancelable), 568 ulwp.ul_cancelable, 569 ulwp.ul_cancel_pending, 570 ulwp.ul_cancel_disabled, 571 ulwp.ul_cancel_async, 572 ulwp.ul_save_async, 573 ulwp.ul_mutator); 574 575 HD("created replace nocancel errno errnop"); 576 mdb_printf(OFFSTR "%-10d %-10d %-10d %-10d %s\n", 577 OFFSET(ul_created), 578 ulwp.ul_created, 579 ulwp.ul_replace, 580 ulwp.ul_nocancel, 581 ulwp.ul_errno, 582 prt_addr(ulwp.ul_errnop, 0)); 583 584 HD("clnup_hdr schedctl_called schedctl"); 585 mdb_printf(OFFSTR "%s %s %s\n", 586 OFFSET(ul_clnup_hdr), 587 prt_addr(ulwp.ul_clnup_hdr, 1), 588 prt_addr(ulwp.ul_schedctl_called, 1), 589 prt_addr((void *)ulwp.ul_schedctl, 0)); 590 591 HD("bindflags libc_locks stsd &ftsd"); 592 mdb_printf(OFFSTR, 593 OFFSET(ul_bindflags)); 594 mdb_printf(ulwp.ul_bindflags? "0x%-8x " : "%-10d ", 595 ulwp.ul_bindflags); 596 mdb_printf("%-10d ", ulwp.ul_libc_locks); 597 mdb_printf("%s %s\n", 598 prt_addr(ulwp.ul_stsd, 1), 599 prt_addr((void *)(addr + OFFSET(ul_ftsd[0])), 0)); 600 601 HD("eventmask[0..1] eventnum eventdata"); 602 mdb_printf(OFFSTR "0x%08x 0x%08x %-21d %s\n", 603 OFFSET(ul_td_evbuf.eventmask.event_bits[0]), 604 ulwp.ul_td_evbuf.eventmask.event_bits[0], 605 ulwp.ul_td_evbuf.eventmask.event_bits[1], 606 ulwp.ul_td_evbuf.eventnum, 607 prt_addr(ulwp.ul_td_evbuf.eventdata, 0)); 608 609 HD("td'enable sync'reg qtype cv_wake rtld usropts"); 610 mdb_printf(OFFSTR "%-10d %-10d %-10d %-10d %-10d ", 611 OFFSET(ul_td_events_enable), 612 ulwp.ul_td_events_enable, 613 ulwp.ul_sync_obj_reg, 614 ulwp.ul_qtype, 615 ulwp.ul_cv_wake, 616 ulwp.ul_rtld); 617 mdb_printf(ulwp.ul_usropts? "0x%x\n" : "%d\n", 618 ulwp.ul_usropts); 619 620 HD("startpc startarg wchan"); 621 mdb_printf(OFFSTR "%s %s %s\n", 622 OFFSET(ul_startpc), 623 prt_addr((void *)ulwp.ul_startpc, 1), 624 prt_addr(ulwp.ul_startarg, 1), 625 prt_addr(ulwp.ul_wchan, 0)); 626 627 HD("link sleepq cvmutex"); 628 mdb_printf(OFFSTR "%s %s %s\n", 629 OFFSET(ul_link), 630 prt_addr(ulwp.ul_link, 1), 631 prt_addr(ulwp.ul_sleepq, 1), 632 prt_addr(ulwp.ul_cvmutex, 0)); 633 634 HD("mxchain save_state"); 635 mdb_printf(OFFSTR "%s %d\n", 636 OFFSET(ul_mxchain), 637 prt_addr(ulwp.ul_mxchain, 1), 638 ulwp.ul_save_state); 639 640 HD("rdlockcnt rd_rwlock rd_count"); 641 mdb_printf(OFFSTR "%-21d %s %d\n", 642 OFFSET(ul_rdlockcnt), 643 ulwp.ul_rdlockcnt, 644 prt_addr(ulwp.ul_readlock.single.rd_rwlock, 1), 645 ulwp.ul_readlock.single.rd_count); 646 647 HD("heldlockcnt heldlocks tpdp"); 648 mdb_printf(OFFSTR "%-21d %s %s\n", 649 OFFSET(ul_heldlockcnt), 650 ulwp.ul_heldlockcnt, 651 prt_addr(ulwp.ul_heldlocks.single, 1), 652 prt_addr(ulwp.ul_tpdp, 0)); 653 654 HD("siglink s'l'spin s'l'spin2 s'l'sleep s'l'wakeup"); 655 mdb_printf(OFFSTR "%s %-10d %-10d %-10d %d\n", 656 OFFSET(ul_siglink), 657 prt_addr(ulwp.ul_siglink, 1), 658 ulwp.ul_spin_lock_spin, 659 ulwp.ul_spin_lock_spin2, 660 ulwp.ul_spin_lock_sleep, 661 ulwp.ul_spin_lock_wakeup); 662 663 HD("&queue_root rtclassid pilocks"); 664 mdb_printf(OFFSTR "%s %-10d %d\n", 665 OFFSET(ul_queue_root), 666 prt_addr((void *)(addr + OFFSET(ul_queue_root)), 1), 667 ulwp.ul_rtclassid, 668 ulwp.ul_pilocks); 669 670 /* 671 * The remainder of the ulwp_t structure 672 * is invalid if this is a replacement. 673 */ 674 if (ulwp.ul_replace) 675 return (DCMD_OK); 676 677 HD("sigmask[0..3]"); 678 mdb_printf(OFFSTR "0x%08x 0x%08x 0x%08x 0x%08x\n", 679 OFFSET(ul_sigmask.__sigbits[0]), 680 ulwp.ul_sigmask.__sigbits[0], 681 ulwp.ul_sigmask.__sigbits[1], 682 ulwp.ul_sigmask.__sigbits[2], 683 ulwp.ul_sigmask.__sigbits[3]); 684 685 HD("tmpmask[0..3]"); 686 mdb_printf(OFFSTR "0x%08x 0x%08x 0x%08x 0x%08x\n", 687 OFFSET(ul_tmpmask.__sigbits[0]), 688 ulwp.ul_tmpmask.__sigbits[0], 689 ulwp.ul_tmpmask.__sigbits[1], 690 ulwp.ul_tmpmask.__sigbits[2], 691 ulwp.ul_tmpmask.__sigbits[3]); 692 693 HD("&siginfo &spinlock &fpuenv"); 694 mdb_printf(OFFSTR "%s %s %s\n", 695 OFFSET(ul_siginfo), 696 prt_addr((void *)(addr + OFFSET(ul_siginfo)), 1), 697 prt_addr((void *)(addr + OFFSET(ul_spinlock)), 1), 698 prt_addr((void *)(addr + OFFSET(ul_fpuenv)), 0)); 699 700 HD("tmem.size &tmem.roots"); 701 mdb_printf(OFFSTR "%-21H %s\n", 702 OFFSET(ul_tmem), 703 ulwp.ul_tmem.tm_size, 704 prt_addr((void *)(addr + OFFSET(ul_tmem) + sizeof (size_t)), 0)); 705 706 return (DCMD_OK); 707 } 708 709 /* 710 * Get the address of the unique uberdata_t structure. 711 */ 712 static uintptr_t 713 uberdata_addr(void) 714 { 715 uintptr_t uaddr; 716 uintptr_t addr; 717 GElf_Sym sym; 718 719 if (mdb_lookup_by_obj("libc.so.1", "_tdb_bootstrap", &sym) != 0) { 720 mdb_warn("cannot find libc.so.1`_tdb_bootstrap"); 721 return (NULL); 722 } 723 if (mdb_vread(&addr, sizeof (addr), sym.st_value) == sizeof (addr) && 724 addr != NULL && 725 mdb_vread(&uaddr, sizeof (uaddr), addr) == sizeof (uaddr) && 726 uaddr != NULL) { 727 return (uaddr); 728 } 729 if (mdb_lookup_by_obj("libc.so.1", "_uberdata", &sym) != 0) { 730 mdb_warn("cannot find libc.so.1`_uberdata"); 731 return (NULL); 732 } 733 return ((uintptr_t)sym.st_value); 734 } 735 736 #undef OFFSET 737 #define OFFSET(member) ((size_t)OFFSETOF(uberdata_t, member)) 738 739 /*ARGSUSED*/ 740 static int 741 d_uberdata(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 742 { 743 uberdata_t uberdata; 744 int i; 745 746 if (argc != 0) 747 return (DCMD_USAGE); 748 if (!(flags & DCMD_ADDRSPEC) && (addr = uberdata_addr()) == NULL) 749 return (DCMD_ERR); 750 751 if (mdb_vread(&uberdata, sizeof (uberdata), addr) != 752 sizeof (uberdata)) { 753 mdb_warn("failed to read uberdata at 0x%p", addr); 754 return (DCMD_ERR); 755 } 756 757 mdb_printf("%#a\n", addr); 758 759 HD("&link_lock &ld_lock &fork_lock"); 760 mdb_printf(OFFSTR "%s %s %s\n", 761 OFFSET(link_lock), 762 prt_addr((void *)(addr + OFFSET(link_lock)), 1), 763 prt_addr((void *)(addr + OFFSET(ld_lock)), 1), 764 prt_addr((void *)(addr + OFFSET(fork_lock)), 0)); 765 766 HD("&atfork_lock &callout_lock &tdb_hash_lock"); 767 mdb_printf(OFFSTR "%s %s %s\n", 768 OFFSET(atfork_lock), 769 prt_addr((void *)(addr + OFFSET(atfork_lock)), 1), 770 prt_addr((void *)(addr + OFFSET(callout_lock)), 1), 771 prt_addr((void *)(addr + OFFSET(tdb_hash_lock)), 0)); 772 773 HD("&tdb_hash_lock_stats &siguaction[0]"); 774 mdb_printf(OFFSTR "%s %s\n", 775 OFFSET(tdb_hash_lock_stats), 776 prt_addr((void *)(addr + OFFSET(tdb_hash_lock_stats)), 1), 777 prt_addr((void *)(addr + OFFSET(siguaction)), 0)); 778 779 HD("&bucket free_list chunks"); 780 for (i = 0; i < NBUCKETS; i++) { 781 mdb_printf(OFFSTR "%s %s %ld\n", 782 OFFSET(bucket[i]), 783 prt_addr((void *)(addr + OFFSET(bucket[i])), 1), 784 prt_addr(uberdata.bucket[i].free_list, 1), 785 uberdata.bucket[i].chunks); 786 } 787 788 HD("&atexit_root head exit_frame_monitor"); 789 mdb_printf(OFFSTR "%s %s %s\n", 790 OFFSET(atexit_root), 791 prt_addr((void *)(addr + OFFSET(atexit_root.exitfns_lock)), 1), 792 prt_addr(uberdata.atexit_root.head, 1), 793 prt_addr(uberdata.atexit_root.exit_frame_monitor, 0)); 794 795 HD("&quickexit_root head"); 796 mdb_printf(OFFSTR "%s %s\n", 797 OFFSET(quickexit_root), 798 prt_addr((void *)(addr + OFFSET(quickexit_root.exitfns_lock)), 1), 799 prt_addr(uberdata.quickexit_root.head, 0)); 800 801 802 HD("&tsd_metadata tsdm_nkeys tsdm_nused tsdm_destro"); 803 mdb_printf(OFFSTR "%s %-10d %-10d %s\n", 804 OFFSET(tsd_metadata), 805 prt_addr((void *)(addr + OFFSET(tsd_metadata.tsdm_lock)), 1), 806 uberdata.tsd_metadata.tsdm_nkeys, 807 uberdata.tsd_metadata.tsdm_nused, 808 prt_addr((void *)uberdata.tsd_metadata.tsdm_destro, 0)); 809 810 HD("&tls_metadata tls_modinfo.data tls_modinfo.size"); 811 mdb_printf(OFFSTR "%s %s %ld\n", 812 OFFSET(tls_metadata), 813 prt_addr((void *)(addr + OFFSET(tls_metadata.tls_lock)), 1), 814 prt_addr(uberdata.tls_metadata.tls_modinfo.tls_data, 1), 815 uberdata.tls_metadata.tls_modinfo.tls_size); 816 817 HD(" static_tls.data static_tls.size"); 818 mdb_printf(OFFSTR "%s %s %ld\n", 819 OFFSET(tls_metadata.static_tls), 820 " ", 821 prt_addr(uberdata.tls_metadata.static_tls.tls_data, 1), 822 uberdata.tls_metadata.static_tls.tls_size); 823 824 HD("primary_ma bucket_ini uflags.mt uflags.pad uflags.trs uflags.ted"); 825 mdb_printf(OFFSTR "%-10d %-10d %-10d %-10d %-10d %d\n", 826 OFFSET(primary_map), 827 uberdata.primary_map, 828 uberdata.bucket_init, 829 uberdata.uberflags.uf_x.x_mt, 830 uberdata.uberflags.uf_x.x_pad, 831 uberdata.uberflags.uf_x.x_tdb_register_sync, 832 uberdata.uberflags.uf_x.x_thread_error_detection); 833 834 HD("queue_head thr_hash_table hash_size hash_mask"); 835 mdb_printf(OFFSTR "%s %s %-10d 0x%x\n", 836 OFFSET(queue_head), 837 prt_addr(uberdata.queue_head, 1), 838 prt_addr(uberdata.thr_hash_table, 1), 839 uberdata.hash_size, 840 uberdata.hash_mask); 841 842 HD("ulwp_one all_lwps all_zombies"); 843 mdb_printf(OFFSTR "%s %s %s\n", 844 OFFSET(ulwp_one), 845 prt_addr(uberdata.ulwp_one, 1), 846 prt_addr(uberdata.all_lwps, 1), 847 prt_addr(uberdata.all_zombies, 0)); 848 849 HD("nthreads nzombies ndaemons pid sigacthandler"); 850 mdb_printf(OFFSTR "%-10d %-10d %-10d %-10d %s\n", 851 OFFSET(nthreads), 852 uberdata.nthreads, 853 uberdata.nzombies, 854 uberdata.ndaemons, 855 (int)uberdata.pid, 856 prt_addr((void *)uberdata.sigacthandler, 0)); 857 858 HD("lwp_stacks lwp_laststack nfreestack stk_cache"); 859 mdb_printf(OFFSTR "%s %s %-10d %d\n", 860 OFFSET(lwp_stacks), 861 prt_addr(uberdata.lwp_stacks, 1), 862 prt_addr(uberdata.lwp_laststack, 1), 863 uberdata.nfreestack, 864 uberdata.thread_stack_cache); 865 866 HD("ulwp_freelist ulwp_lastfree ulwp_replace_free"); 867 mdb_printf(OFFSTR "%s %s %s\n", 868 OFFSET(ulwp_freelist), 869 prt_addr(uberdata.ulwp_freelist, 1), 870 prt_addr(uberdata.ulwp_lastfree, 1), 871 prt_addr(uberdata.ulwp_replace_free, 0)); 872 873 HD("ulwp_replace_last atforklist"); 874 mdb_printf(OFFSTR "%s %s\n", 875 OFFSET(ulwp_replace_last), 876 prt_addr(uberdata.ulwp_replace_last, 1), 877 prt_addr(uberdata.atforklist, 0)); 878 879 HD("robustlocks robustlist progname"); 880 mdb_printf(OFFSTR "%s %s %s\n", 881 OFFSET(robustlocks), 882 prt_addr(uberdata.robustlocks, 1), 883 prt_addr(uberdata.robustlist, 1), 884 prt_addr(uberdata.progname, 0)); 885 886 HD("tdb_bootstrap tdb_sync_addr_hash tdb_'count tdb_'fail"); 887 mdb_printf(OFFSTR "%s %s %-10d %d\n", 888 OFFSET(tdb_bootstrap), 889 prt_addr(uberdata.tdb_bootstrap, 1), 890 prt_addr(uberdata.tdb.tdb_sync_addr_hash, 1), 891 uberdata.tdb.tdb_register_count, 892 uberdata.tdb.tdb_hash_alloc_failed); 893 894 HD("tdb_sync_addr_free tdb_sync_addr_last tdb_sync_alloc"); 895 mdb_printf(OFFSTR "%s %s %ld\n", 896 OFFSET(tdb.tdb_sync_addr_free), 897 prt_addr(uberdata.tdb.tdb_sync_addr_free, 1), 898 prt_addr(uberdata.tdb.tdb_sync_addr_last, 1), 899 uberdata.tdb.tdb_sync_alloc); 900 901 HD("tdb_ev_global_mask tdb_events"); 902 mdb_printf(OFFSTR "0x%08x 0x%08x %s\n", 903 OFFSET(tdb.tdb_ev_global_mask), 904 uberdata.tdb.tdb_ev_global_mask.event_bits[0], 905 uberdata.tdb.tdb_ev_global_mask.event_bits[1], 906 prt_addr((void *)uberdata.tdb.tdb_events, 0)); 907 908 return (DCMD_OK); 909 } 910 911 static int 912 ulwp_walk_init(mdb_walk_state_t *wsp) 913 { 914 uintptr_t addr = wsp->walk_addr; 915 uintptr_t uber_addr; 916 917 if (addr == NULL && 918 ((uber_addr = uberdata_addr()) == NULL || 919 mdb_vread(&addr, sizeof (addr), 920 uber_addr + OFFSETOF(uberdata_t, all_lwps)) 921 != sizeof (addr))) { 922 mdb_warn("cannot find 'uberdata.all_lwps'"); 923 return (WALK_ERR); 924 } 925 if (addr == NULL) 926 return (WALK_DONE); 927 wsp->walk_addr = addr; 928 wsp->walk_data = (void *)addr; 929 return (WALK_NEXT); 930 } 931 932 static int 933 ulwp_walk_step(mdb_walk_state_t *wsp) 934 { 935 uintptr_t addr = wsp->walk_addr; 936 ulwp_t ulwp; 937 938 if (addr == NULL) 939 return (WALK_DONE); 940 if (mdb_vread(&ulwp, sizeof (ulwp), addr) != sizeof (ulwp) && 941 (bzero(&ulwp, sizeof (ulwp)), 942 mdb_vread(&ulwp, REPLACEMENT_SIZE, addr)) != REPLACEMENT_SIZE) { 943 mdb_warn("failed to read ulwp at 0x%p", addr); 944 return (WALK_ERR); 945 } 946 /* 947 * If we have looped around to the beginning 948 * of the circular linked list, we are done. 949 */ 950 if ((wsp->walk_addr = (uintptr_t)ulwp.ul_forw) 951 == (uintptr_t)wsp->walk_data) 952 wsp->walk_addr = NULL; 953 return (wsp->walk_callback(addr, &ulwp, wsp->walk_cbdata)); 954 } 955 956 /* Avoid classifying NULL pointers as part of the main stack on x86 */ 957 #define MIN_STACK_ADDR (0x10000ul) 958 959 static int 960 whatis_walk_ulwp(uintptr_t addr, const ulwp_t *ulwp, mdb_whatis_t *w) 961 { 962 uintptr_t cur; 963 lwpid_t id = ulwp->ul_lwpid; 964 uintptr_t top, base, size; 965 966 while (mdb_whatis_match(w, addr, sizeof (ulwp_t), &cur)) 967 mdb_whatis_report_object(w, cur, addr, 968 "allocated as thread %#r's ulwp_t\n", id); 969 970 top = (uintptr_t)ulwp->ul_stktop; 971 size = ulwp->ul_stksiz; 972 973 /* 974 * The main stack ends up being a little weird, especially if 975 * the stack ulimit is unlimited. This tries to take that into 976 * account. 977 */ 978 if (size > top) 979 size = top; 980 if (top > MIN_STACK_ADDR && top - size < MIN_STACK_ADDR) 981 size = top - MIN_STACK_ADDR; 982 983 base = top - size; 984 985 while (mdb_whatis_match(w, base, size, &cur)) 986 mdb_whatis_report_address(w, cur, "in [ stack tid=%#r ]\n", id); 987 988 if (ulwp->ul_ustack.ss_flags & SS_ONSTACK) { 989 base = (uintptr_t)ulwp->ul_ustack.ss_sp; 990 size = ulwp->ul_ustack.ss_size; 991 992 while (mdb_whatis_match(w, base, size, &cur)) 993 mdb_whatis_report_address(w, cur, 994 "in [ altstack tid=%#r ]\n", id); 995 } 996 997 return (WHATIS_WALKRET(w)); 998 } 999 1000 /*ARGSUSED*/ 1001 static int 1002 whatis_run_ulwps(mdb_whatis_t *w, void *arg) 1003 { 1004 if (mdb_walk("ulwps", (mdb_walk_cb_t)whatis_walk_ulwp, w) == -1) { 1005 mdb_warn("couldn't find ulwps walker"); 1006 return (1); 1007 } 1008 return (0); 1009 } 1010 1011 /* 1012 * ======================================================= 1013 * End of thread (previously libthread) interfaces. 1014 * ==================== threads ========================== 1015 */ 1016 1017 int 1018 stacks_dcmd(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 1019 { 1020 int rval = stacks(addr, flags, argc, argv); 1021 1022 /* 1023 * For the user-level variant of ::stacks, we don't bother caching 1024 * state, as even a very large program is unlikely to compare to the 1025 * kernel in terms of number of threads. (And if you find yourself 1026 * here in anger, frustrated about how long ::stacks is running on 1027 * your galactically complicated zillion-thread program, hopefully 1028 * you will find some solace in the irony. Okay, probably not...) 1029 */ 1030 stacks_cleanup(B_TRUE); 1031 return (rval); 1032 } 1033 1034 typedef struct tid2ulwp_walk { 1035 lwpid_t t2u_tid; 1036 uintptr_t t2u_lwp; 1037 boolean_t t2u_found; 1038 } tid2ulwp_walk_t; 1039 1040 /*ARGSUSED*/ 1041 static int 1042 tid2ulwp_walk(uintptr_t addr, ulwp_t *ulwp, tid2ulwp_walk_t *t2u) 1043 { 1044 if (ulwp->ul_lwpid == t2u->t2u_tid) { 1045 t2u->t2u_lwp = addr; 1046 t2u->t2u_found = B_TRUE; 1047 return (WALK_DONE); 1048 } 1049 1050 return (WALK_NEXT); 1051 } 1052 1053 static int 1054 tid2ulwp_impl(uintptr_t tid_addr, uintptr_t *ulwp_addrp) 1055 { 1056 tid2ulwp_walk_t t2u; 1057 1058 bzero(&t2u, sizeof (t2u)); 1059 t2u.t2u_tid = (lwpid_t)tid_addr; 1060 1061 if (mdb_walk("ulwp", (mdb_walk_cb_t)tid2ulwp_walk, &t2u) != 0) { 1062 mdb_warn("can't walk 'ulwp'"); 1063 return (DCMD_ERR); 1064 } 1065 1066 if (!t2u.t2u_found) { 1067 mdb_warn("thread ID %d not found", t2u.t2u_tid); 1068 return (DCMD_ERR); 1069 } 1070 *ulwp_addrp = t2u.t2u_lwp; 1071 return (DCMD_OK); 1072 } 1073 1074 /*ARGSUSED*/ 1075 static int 1076 tid2ulwp(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 1077 { 1078 uintptr_t ulwp_addr; 1079 int error; 1080 1081 if (argc != 0) 1082 return (DCMD_USAGE); 1083 1084 error = tid2ulwp_impl(addr, &ulwp_addr); 1085 if (error == DCMD_OK) 1086 mdb_printf("%p\n", ulwp_addr); 1087 return (error); 1088 } 1089 1090 typedef struct mdb_libc_ulwp { 1091 void *ul_ftsd[TSD_NFAST]; 1092 tsd_t *ul_stsd; 1093 } mdb_libc_ulwp_t; 1094 1095 /* 1096 * Map from thread pointer to tsd for given key 1097 */ 1098 static int 1099 d_tsd(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 1100 { 1101 mdb_libc_ulwp_t u; 1102 uintptr_t ulwp_addr; 1103 uintptr_t key = NULL; 1104 void *element = NULL; 1105 1106 if (mdb_getopts(argc, argv, 'k', MDB_OPT_UINTPTR, &key, NULL) != argc) 1107 return (DCMD_USAGE); 1108 1109 if (!(flags & DCMD_ADDRSPEC) || key == NULL) 1110 return (DCMD_USAGE); 1111 1112 if (tid2ulwp_impl(addr, &ulwp_addr) != DCMD_OK) 1113 return (DCMD_ERR); 1114 1115 if (mdb_ctf_vread(&u, "ulwp_t", "mdb_libc_ulwp_t", ulwp_addr, 0) == -1) 1116 return (DCMD_ERR); 1117 1118 if (key < TSD_NFAST) { 1119 element = u.ul_ftsd[key]; 1120 } else if (u.ul_stsd != NULL) { 1121 uint_t nalloc; 1122 /* tsd_t is a union, so we can't use ctf_vread() on it. */ 1123 if (mdb_vread(&nalloc, sizeof (nalloc), 1124 (uintptr_t)&u.ul_stsd->tsd_nalloc) == -1) { 1125 mdb_warn("failed to read tsd_t at %p", u.ul_stsd); 1126 return (DCMD_ERR); 1127 } 1128 if (key < nalloc) { 1129 if (mdb_vread(&element, sizeof (element), 1130 (uintptr_t)&u.ul_stsd->tsd_data[key]) == -1) { 1131 mdb_warn("failed to read tsd_t at %p", 1132 u.ul_stsd); 1133 return (DCMD_ERR); 1134 } 1135 } 1136 } 1137 1138 if (element == NULL && (flags & DCMD_PIPE)) 1139 return (DCMD_OK); 1140 1141 mdb_printf("%p\n", element); 1142 return (DCMD_OK); 1143 } 1144 1145 static const mdb_dcmd_t dcmds[] = { 1146 { "jmp_buf", ":", "print jmp_buf contents", d_jmp_buf, NULL }, 1147 { "sigjmp_buf", ":", "print sigjmp_buf contents", d_sigjmp_buf, NULL }, 1148 { "siginfo", ":", "print siginfo_t structure", d_siginfo, NULL }, 1149 { "stacks", "?[-afiv] [-c func] [-C func] [-m module] [-M module] ", 1150 "print unique thread stacks", stacks_dcmd, stacks_help }, 1151 { "tid2ulwp", "?", "convert TID to ulwp_t address", tid2ulwp }, 1152 { "ucontext", ":", "print ucontext_t structure", d_ucontext, NULL }, 1153 { "ulwp", ":", "print ulwp_t structure", d_ulwp, NULL }, 1154 { "uberdata", ":", "print uberdata_t structure", d_uberdata, NULL }, 1155 { "tsd", ":-k key", "print tsd for this thread", d_tsd, NULL }, 1156 { NULL } 1157 }; 1158 1159 static const mdb_walker_t walkers[] = { 1160 { "ucontext", "walk ucontext_t uc_link list", 1161 NULL, uc_walk_step, NULL, NULL }, 1162 { "oldcontext", "walk per-lwp oldcontext pointers", 1163 oldc_walk_init, oldc_walk_step, oldc_walk_fini, NULL }, 1164 { "ulwps", "walk list of ulwp_t pointers", 1165 ulwp_walk_init, ulwp_walk_step, NULL, NULL }, 1166 { "ulwp", "walk list of ulwp_t pointers", 1167 ulwp_walk_init, ulwp_walk_step, NULL, NULL }, 1168 { NULL } 1169 }; 1170 1171 static const mdb_modinfo_t modinfo = { MDB_API_VERSION, dcmds, walkers }; 1172 1173 const mdb_modinfo_t * 1174 _mdb_init(void) 1175 { 1176 mdb_whatis_register("threads", whatis_run_ulwps, NULL, 1177 WHATIS_PRIO_EARLY, WHATIS_REG_NO_ID); 1178 1179 return (&modinfo); 1180 } 1181