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 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 /* 26 * Copyright (c) 2013 by Delphix. All rights reserved. 27 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 28 */ 29 30 #include <mdb/mdb_ctf.h> 31 #include <mdb/mdb_ctf_impl.h> 32 #include <mdb/mdb_err.h> 33 #include <mdb/mdb_modapi.h> 34 #include <mdb/mdb_string.h> 35 #include <mdb/mdb.h> 36 #include <mdb/mdb_debug.h> 37 38 #include <libctf.h> 39 #include <string.h> 40 41 typedef struct tnarg { 42 mdb_tgt_t *tn_tgt; /* target to use for lookup */ 43 const char *tn_name; /* query string to lookup */ 44 ctf_file_t *tn_fp; /* CTF container from match */ 45 ctf_id_t tn_id; /* CTF type ID from match */ 46 } tnarg_t; 47 48 typedef struct type_iter { 49 mdb_ctf_type_f *ti_cb; 50 void *ti_arg; 51 ctf_file_t *ti_fp; 52 } type_iter_t; 53 54 typedef struct member_iter { 55 mdb_ctf_member_f *mi_cb; 56 void *mi_arg; 57 ctf_file_t *mi_fp; 58 } member_iter_t; 59 60 typedef struct type_visit { 61 mdb_ctf_visit_f *tv_cb; 62 void *tv_arg; 63 ctf_file_t *tv_fp; 64 ulong_t tv_base_offset; /* used when recursing from type_cb() */ 65 int tv_base_depth; /* used when recursing from type_cb() */ 66 int tv_min_depth; 67 } type_visit_t; 68 69 typedef struct mbr_info { 70 const char *mbr_member; 71 ulong_t *mbr_offp; 72 mdb_ctf_id_t *mbr_typep; 73 } mbr_info_t; 74 75 typedef struct synth_intrinsic { 76 const char *syn_name; 77 ctf_encoding_t syn_enc; 78 uint_t syn_kind; 79 } synth_intrinsic_t; 80 81 typedef struct synth_typedef { 82 const char *syt_src; 83 const char *syt_targ; 84 } synth_typedef_t; 85 86 /* 87 * As part of our support for synthetic types via ::typedef, we define a core 88 * set of types. 89 */ 90 static const synth_intrinsic_t synth_builtins32[] = { 91 { "void", { CTF_INT_SIGNED, 0, 0 }, CTF_K_INTEGER }, 92 { "signed", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 93 { "unsigned", { 0, 0, 32 }, CTF_K_INTEGER }, 94 { "char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 95 { "short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 96 { "int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 97 { "long", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 98 { "long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 99 { "signed char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 100 { "signed short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 101 { "signed int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 102 { "signed long", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 103 { "signed long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 104 { "unsigned char", { CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 105 { "unsigned short", { 0, 0, 16 }, CTF_K_INTEGER }, 106 { "unsigned int", { 0, 0, 32 }, CTF_K_INTEGER }, 107 { "unsigned long", { 0, 0, 32 }, CTF_K_INTEGER }, 108 { "unsigned long long", { 0, 0, 64 }, CTF_K_INTEGER }, 109 { "_Bool", { CTF_INT_BOOL, 0, 8 }, CTF_K_INTEGER }, 110 { "float", { CTF_FP_SINGLE, 0, 32 }, CTF_K_FLOAT }, 111 { "double", { CTF_FP_DOUBLE, 0, 64 }, CTF_K_FLOAT }, 112 { "long double", { CTF_FP_LDOUBLE, 0, 128 }, CTF_K_FLOAT }, 113 { "float imaginary", { CTF_FP_IMAGRY, 0, 32 }, CTF_K_FLOAT }, 114 { "double imaginary", { CTF_FP_DIMAGRY, 0, 64 }, CTF_K_FLOAT }, 115 { "long double imaginary", { CTF_FP_LDIMAGRY, 0, 128 }, CTF_K_FLOAT }, 116 { "float complex", { CTF_FP_CPLX, 0, 64 }, CTF_K_FLOAT }, 117 { "double complex", { CTF_FP_DCPLX, 0, 128 }, CTF_K_FLOAT }, 118 { "long double complex", { CTF_FP_LDCPLX, 0, 256 }, CTF_K_FLOAT }, 119 { NULL, { 0, 0, 0}, 0 } 120 }; 121 122 static const synth_intrinsic_t synth_builtins64[] = { 123 { "void", { CTF_INT_SIGNED, 0, 0 }, CTF_K_INTEGER }, 124 { "signed", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 125 { "unsigned", { 0, 0, 32 }, CTF_K_INTEGER }, 126 { "char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 127 { "short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 128 { "int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 129 { "long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 130 { "long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 131 { "signed char", { CTF_INT_SIGNED | CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 132 { "signed short", { CTF_INT_SIGNED, 0, 16 }, CTF_K_INTEGER }, 133 { "signed int", { CTF_INT_SIGNED, 0, 32 }, CTF_K_INTEGER }, 134 { "signed long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 135 { "signed long long", { CTF_INT_SIGNED, 0, 64 }, CTF_K_INTEGER }, 136 { "unsigned char", { CTF_INT_CHAR, 0, 8 }, CTF_K_INTEGER }, 137 { "unsigned short", { 0, 0, 16 }, CTF_K_INTEGER }, 138 { "unsigned int", { 0, 0, 32 }, CTF_K_INTEGER }, 139 { "unsigned long", { 0, 0, 64 }, CTF_K_INTEGER }, 140 { "unsigned long long", { 0, 0, 64 }, CTF_K_INTEGER }, 141 { "_Bool", { CTF_INT_BOOL, 0, 8 }, CTF_K_INTEGER }, 142 { "float", { CTF_FP_SINGLE, 0, 32 }, CTF_K_FLOAT }, 143 { "double", { CTF_FP_DOUBLE, 0, 64 }, CTF_K_FLOAT }, 144 { "long double", { CTF_FP_LDOUBLE, 0, 128 }, CTF_K_FLOAT }, 145 { "float imaginary", { CTF_FP_IMAGRY, 0, 32 }, CTF_K_FLOAT }, 146 { "double imaginary", { CTF_FP_DIMAGRY, 0, 64 }, CTF_K_FLOAT }, 147 { "long double imaginary", { CTF_FP_LDIMAGRY, 0, 128 }, CTF_K_FLOAT }, 148 { "float complex", { CTF_FP_CPLX, 0, 64 }, CTF_K_FLOAT }, 149 { "double complex", { CTF_FP_DCPLX, 0, 128 }, CTF_K_FLOAT }, 150 { "long double complex", { CTF_FP_LDCPLX, 0, 256 }, CTF_K_FLOAT }, 151 { NULL, { 0, 0, 0 }, 0 } 152 }; 153 154 static const synth_typedef_t synth_typedefs32[] = { 155 { "char", "int8_t" }, 156 { "short", "int16_t" }, 157 { "int", "int32_t" }, 158 { "long long", "int64_t" }, 159 { "int", "intptr_t" }, 160 { "unsigned char", "uint8_t" }, 161 { "unsigned short", "uint16_t" }, 162 { "unsigned", "uint32_t" }, 163 { "unsigned long long", "uint64_t" }, 164 { "unsigned char", "uchar_t" }, 165 { "unsigned short", "ushort_t" }, 166 { "unsigned", "uint_t" }, 167 { "unsigned long", "ulong_t" }, 168 { "unsigned long long", "u_longlong_t" }, 169 { "int", "ptrdiff_t" }, 170 { "unsigned", "uintptr_t" }, 171 { NULL, NULL } 172 }; 173 174 static const synth_typedef_t synth_typedefs64[] = { 175 { "char", "int8_t" }, 176 { "short", "int16_t" }, 177 { "int", "int32_t" }, 178 { "long", "int64_t" }, 179 { "long", "intptr_t" }, 180 { "unsigned char", "uint8_t" }, 181 { "unsigned short", "uint16_t" }, 182 { "unsigned", "uint32_t" }, 183 { "unsigned long", "uint64_t" }, 184 { "unsigned char", "uchar_t" }, 185 { "unsigned short", "ushort_t" }, 186 { "unsigned", "uint_t" }, 187 { "unsigned long", "ulong_t" }, 188 { "unsigned long long", "u_longlong_t" }, 189 { "long", "ptrdiff_t" }, 190 { "unsigned long", "uintptr_t" }, 191 { NULL, NULL } 192 }; 193 194 static void 195 set_ctf_id(mdb_ctf_id_t *p, ctf_file_t *fp, ctf_id_t id) 196 { 197 mdb_ctf_impl_t *mcip = (mdb_ctf_impl_t *)p; 198 199 mcip->mci_fp = fp; 200 mcip->mci_id = id; 201 } 202 203 /* 204 * Callback function for mdb_tgt_object_iter used from name_to_type, below, 205 * to search the CTF namespace of each object file for a particular name. 206 */ 207 /*ARGSUSED*/ 208 static int 209 obj_lookup(void *data, const mdb_map_t *mp, const char *name) 210 { 211 tnarg_t *tnp = data; 212 ctf_file_t *fp; 213 ctf_id_t id; 214 215 if ((fp = mdb_tgt_name_to_ctf(tnp->tn_tgt, name)) != NULL && 216 (id = ctf_lookup_by_name(fp, tnp->tn_name)) != CTF_ERR) { 217 tnp->tn_fp = fp; 218 tnp->tn_id = id; 219 220 /* 221 * We may have found a forward declaration. If we did, we'll 222 * note the ID and file pointer, but we'll keep searching in 223 * an attempt to find the real thing. If we found something 224 * real (i.e. not a forward), we stop the iteration. 225 */ 226 return (ctf_type_kind(fp, id) == CTF_K_FORWARD ? 0 : -1); 227 } 228 229 return (0); 230 } 231 232 /* 233 * Convert a string type name with an optional leading object specifier into 234 * the corresponding CTF file container and type ID. If an error occurs, we 235 * print an appropriate message and return NULL. 236 */ 237 static ctf_file_t * 238 name_to_type(mdb_tgt_t *t, const char *cname, ctf_id_t *idp) 239 { 240 const char *object = MDB_TGT_OBJ_EXEC; 241 ctf_file_t *fp = NULL; 242 ctf_id_t id; 243 tnarg_t arg; 244 char *p, *s; 245 char buf[MDB_SYM_NAMLEN]; 246 char *name = &buf[0]; 247 248 (void) mdb_snprintf(buf, sizeof (buf), "%s", cname); 249 250 if ((p = strrsplit(name, '`')) != NULL) { 251 /* 252 * We need to shuffle things around a little to support 253 * type names of the form "struct module`name". 254 */ 255 if ((s = strsplit(name, ' ')) != NULL) { 256 bcopy(cname + (s - name), name, (p - s) - 1); 257 name[(p - s) - 1] = '\0'; 258 bcopy(cname, name + (p - s), s - name); 259 p = name + (p - s); 260 } 261 if (*name != '\0') 262 object = name; 263 name = p; 264 } 265 266 /* 267 * Attempt to look up the name in the primary object file. If this 268 * fails and the name was unscoped, search all remaining object files. 269 * Finally, search the synthetic types. 270 */ 271 if (((fp = mdb_tgt_name_to_ctf(t, object)) == NULL || 272 (id = ctf_lookup_by_name(fp, name)) == CTF_ERR || 273 ctf_type_kind(fp, id) == CTF_K_FORWARD) && 274 object == MDB_TGT_OBJ_EXEC) { 275 276 arg.tn_tgt = t; 277 arg.tn_name = name; 278 arg.tn_fp = NULL; 279 arg.tn_id = CTF_ERR; 280 281 (void) mdb_tgt_object_iter(t, obj_lookup, &arg); 282 283 if (arg.tn_id != CTF_ERR) { 284 fp = arg.tn_fp; 285 id = arg.tn_id; 286 } else if (mdb.m_synth != NULL) { 287 if ((id = ctf_lookup_by_name(mdb.m_synth, 288 name)) != CTF_ERR) 289 fp = mdb.m_synth; 290 } 291 } 292 293 if (fp == NULL) 294 return (NULL); /* errno is set for us */ 295 296 if (id == CTF_ERR) { 297 (void) set_errno(ctf_to_errno(ctf_errno(fp))); 298 return (NULL); 299 } 300 301 *idp = id; 302 return (fp); 303 } 304 305 /* 306 * Check to see if there is ctf data in the given object. This is useful 307 * so that we don't enter some loop where every call to lookup fails. 308 */ 309 int 310 mdb_ctf_enabled_by_object(const char *object) 311 { 312 mdb_tgt_t *t = mdb.m_target; 313 314 return (mdb_tgt_name_to_ctf(t, object) != NULL); 315 } 316 317 int 318 mdb_ctf_lookup_by_name(const char *name, mdb_ctf_id_t *p) 319 { 320 ctf_file_t *fp = NULL; 321 mdb_ctf_impl_t *mcip = (mdb_ctf_impl_t *)p; 322 mdb_tgt_t *t = mdb.m_target; 323 324 if (mcip == NULL) 325 return (set_errno(EINVAL)); 326 327 if ((fp = name_to_type(t, name, &mcip->mci_id)) == NULL) { 328 mdb_ctf_type_invalidate(p); 329 return (-1); /* errno is set for us */ 330 } 331 332 mcip->mci_fp = fp; 333 334 return (0); 335 } 336 337 int 338 mdb_ctf_lookup_by_symbol(const GElf_Sym *symp, const mdb_syminfo_t *sip, 339 mdb_ctf_id_t *p) 340 { 341 ctf_file_t *fp = NULL; 342 mdb_ctf_impl_t *mcip = (mdb_ctf_impl_t *)p; 343 mdb_tgt_t *t = mdb.m_target; 344 345 if (mcip == NULL) 346 return (set_errno(EINVAL)); 347 348 if (symp == NULL || sip == NULL) { 349 mdb_ctf_type_invalidate(p); 350 return (set_errno(EINVAL)); 351 } 352 353 if ((fp = mdb_tgt_addr_to_ctf(t, symp->st_value)) == NULL) { 354 mdb_ctf_type_invalidate(p); 355 return (-1); /* errno is set for us */ 356 } 357 358 if ((mcip->mci_id = ctf_lookup_by_symbol(fp, sip->sym_id)) == CTF_ERR) { 359 mdb_ctf_type_invalidate(p); 360 return (set_errno(ctf_to_errno(ctf_errno(fp)))); 361 } 362 363 mcip->mci_fp = fp; 364 365 return (0); 366 } 367 368 int 369 mdb_ctf_lookup_by_addr(uintptr_t addr, mdb_ctf_id_t *p) 370 { 371 GElf_Sym sym; 372 mdb_syminfo_t si; 373 char name[MDB_SYM_NAMLEN]; 374 const mdb_map_t *mp; 375 mdb_tgt_t *t = mdb.m_target; 376 const char *obj, *c; 377 378 if (p == NULL) 379 return (set_errno(EINVAL)); 380 381 if (mdb_tgt_lookup_by_addr(t, addr, MDB_TGT_SYM_EXACT, name, 382 sizeof (name), NULL, NULL) == -1) { 383 mdb_ctf_type_invalidate(p); 384 return (-1); /* errno is set for us */ 385 } 386 387 if ((c = strrsplit(name, '`')) != NULL) { 388 obj = name; 389 } else { 390 if ((mp = mdb_tgt_addr_to_map(t, addr)) == NULL) { 391 mdb_ctf_type_invalidate(p); 392 return (-1); /* errno is set for us */ 393 } 394 395 obj = mp->map_name; 396 c = name; 397 } 398 399 if (mdb_tgt_lookup_by_name(t, obj, c, &sym, &si) == -1) { 400 mdb_ctf_type_invalidate(p); 401 return (-1); /* errno is set for us */ 402 } 403 404 return (mdb_ctf_lookup_by_symbol(&sym, &si, p)); 405 } 406 407 int 408 mdb_ctf_module_lookup(const char *name, mdb_ctf_id_t *p) 409 { 410 ctf_file_t *fp; 411 ctf_id_t id; 412 mdb_module_t *mod; 413 414 if ((mod = mdb_get_module()) == NULL) 415 return (set_errno(EMDB_CTX)); 416 417 if ((fp = mod->mod_ctfp) == NULL) 418 return (set_errno(EMDB_NOCTF)); 419 420 if ((id = ctf_lookup_by_name(fp, name)) == CTF_ERR) 421 return (set_errno(ctf_to_errno(ctf_errno(fp)))); 422 423 set_ctf_id(p, fp, id); 424 425 return (0); 426 } 427 428 /*ARGSUSED*/ 429 int 430 mdb_ctf_func_info(const GElf_Sym *symp, const mdb_syminfo_t *sip, 431 mdb_ctf_funcinfo_t *mfp) 432 { 433 ctf_file_t *fp = NULL; 434 ctf_funcinfo_t f; 435 mdb_tgt_t *t = mdb.m_target; 436 char name[MDB_SYM_NAMLEN]; 437 const mdb_map_t *mp; 438 mdb_syminfo_t si; 439 int err; 440 441 if (symp == NULL || mfp == NULL) 442 return (set_errno(EINVAL)); 443 444 /* 445 * In case the input symbol came from a merged or private symbol table, 446 * re-lookup the address as a symbol, and then perform a fully scoped 447 * lookup of that symbol name to get the mdb_syminfo_t for its CTF. 448 */ 449 if ((fp = mdb_tgt_addr_to_ctf(t, symp->st_value)) == NULL || 450 (mp = mdb_tgt_addr_to_map(t, symp->st_value)) == NULL || 451 mdb_tgt_lookup_by_addr(t, symp->st_value, MDB_TGT_SYM_FUZZY, 452 name, sizeof (name), NULL, NULL) != 0) 453 return (-1); /* errno is set for us */ 454 455 if (strchr(name, '`') != NULL) 456 err = mdb_tgt_lookup_by_scope(t, name, NULL, &si); 457 else 458 err = mdb_tgt_lookup_by_name(t, mp->map_name, name, NULL, &si); 459 460 if (err != 0) 461 return (-1); /* errno is set for us */ 462 463 if (ctf_func_info(fp, si.sym_id, &f) == CTF_ERR) 464 return (set_errno(ctf_to_errno(ctf_errno(fp)))); 465 466 set_ctf_id(&mfp->mtf_return, fp, f.ctc_return); 467 mfp->mtf_argc = f.ctc_argc; 468 mfp->mtf_flags = f.ctc_flags; 469 mfp->mtf_symidx = si.sym_id; 470 471 return (0); 472 } 473 474 int 475 mdb_ctf_func_args(const mdb_ctf_funcinfo_t *funcp, uint_t len, 476 mdb_ctf_id_t *argv) 477 { 478 ctf_file_t *fp; 479 ctf_id_t cargv[32]; 480 int i; 481 482 if (len > (sizeof (cargv) / sizeof (cargv[0]))) 483 return (set_errno(EINVAL)); 484 485 if (funcp == NULL || argv == NULL) 486 return (set_errno(EINVAL)); 487 488 fp = mdb_ctf_type_file(funcp->mtf_return); 489 490 if (ctf_func_args(fp, funcp->mtf_symidx, len, cargv) == CTF_ERR) 491 return (set_errno(ctf_to_errno(ctf_errno(fp)))); 492 493 for (i = MIN(len, funcp->mtf_argc) - 1; i >= 0; i--) { 494 set_ctf_id(&argv[i], fp, cargv[i]); 495 } 496 497 return (0); 498 } 499 500 void 501 mdb_ctf_type_invalidate(mdb_ctf_id_t *idp) 502 { 503 set_ctf_id(idp, NULL, CTF_ERR); 504 } 505 506 int 507 mdb_ctf_type_valid(mdb_ctf_id_t id) 508 { 509 return (((mdb_ctf_impl_t *)&id)->mci_id != CTF_ERR); 510 } 511 512 int 513 mdb_ctf_type_cmp(mdb_ctf_id_t aid, mdb_ctf_id_t bid) 514 { 515 mdb_ctf_impl_t *aidp = (mdb_ctf_impl_t *)&aid; 516 mdb_ctf_impl_t *bidp = (mdb_ctf_impl_t *)&bid; 517 518 return (ctf_type_cmp(aidp->mci_fp, aidp->mci_id, 519 bidp->mci_fp, bidp->mci_id)); 520 } 521 522 int 523 mdb_ctf_type_resolve(mdb_ctf_id_t mid, mdb_ctf_id_t *outp) 524 { 525 ctf_id_t id; 526 mdb_ctf_impl_t *idp = (mdb_ctf_impl_t *)∣ 527 528 if ((id = ctf_type_resolve(idp->mci_fp, idp->mci_id)) == CTF_ERR) { 529 if (outp) 530 mdb_ctf_type_invalidate(outp); 531 return (set_errno(ctf_to_errno(ctf_errno(idp->mci_fp)))); 532 } 533 534 if (ctf_type_kind(idp->mci_fp, id) == CTF_K_FORWARD) { 535 char name[MDB_SYM_NAMLEN]; 536 mdb_ctf_id_t lookup_id; 537 538 if (ctf_type_name(idp->mci_fp, id, name, sizeof (name)) != 539 NULL && 540 mdb_ctf_lookup_by_name(name, &lookup_id) == 0 && 541 outp != NULL) { 542 *outp = lookup_id; 543 return (0); 544 } 545 } 546 547 if (outp != NULL) 548 set_ctf_id(outp, idp->mci_fp, id); 549 550 return (0); 551 } 552 553 char * 554 mdb_ctf_type_name(mdb_ctf_id_t id, char *buf, size_t len) 555 { 556 mdb_ctf_impl_t *idp = (mdb_ctf_impl_t *)&id; 557 char *ret; 558 559 if (!mdb_ctf_type_valid(id)) { 560 (void) set_errno(EINVAL); 561 return (NULL); 562 } 563 564 ret = ctf_type_name(idp->mci_fp, idp->mci_id, buf, len); 565 if (ret == NULL) 566 (void) set_errno(ctf_to_errno(ctf_errno(idp->mci_fp))); 567 568 return (ret); 569 } 570 571 ssize_t 572 mdb_ctf_type_size(mdb_ctf_id_t id) 573 { 574 mdb_ctf_impl_t *idp = (mdb_ctf_impl_t *)&id; 575 ssize_t ret; 576 577 /* resolve the type in case there's a forward declaration */ 578 if ((ret = mdb_ctf_type_resolve(id, &id)) != 0) 579 return (ret); 580 581 if ((ret = ctf_type_size(idp->mci_fp, idp->mci_id)) == CTF_ERR) 582 return (set_errno(ctf_to_errno(ctf_errno(idp->mci_fp)))); 583 584 return (ret); 585 } 586 587 int 588 mdb_ctf_type_kind(mdb_ctf_id_t id) 589 { 590 mdb_ctf_impl_t *idp = (mdb_ctf_impl_t *)&id; 591 int ret; 592 593 if ((ret = ctf_type_kind(idp->mci_fp, idp->mci_id)) == CTF_ERR) 594 return (set_errno(ctf_to_errno(ctf_errno(idp->mci_fp)))); 595 596 return (ret); 597 } 598 599 int 600 mdb_ctf_type_reference(mdb_ctf_id_t mid, mdb_ctf_id_t *outp) 601 { 602 mdb_ctf_impl_t *idp = (mdb_ctf_impl_t *)∣ 603 ctf_id_t id; 604 605 if ((id = ctf_type_reference(idp->mci_fp, idp->mci_id)) == CTF_ERR) { 606 if (outp) 607 mdb_ctf_type_invalidate(outp); 608 return (set_errno(ctf_to_errno(ctf_errno(idp->mci_fp)))); 609 } 610 611 if (outp != NULL) 612 set_ctf_id(outp, idp->mci_fp, id); 613 614 return (0); 615 } 616 617 618 int 619 mdb_ctf_type_encoding(mdb_ctf_id_t id, ctf_encoding_t *ep) 620 { 621 mdb_ctf_impl_t *idp = (mdb_ctf_impl_t *)&id; 622 623 if (ctf_type_encoding(idp->mci_fp, idp->mci_id, ep) == CTF_ERR) 624 return (set_errno(ctf_to_errno(ctf_errno(idp->mci_fp)))); 625 626 return (0); 627 } 628 629 /* 630 * callback proxy for mdb_ctf_type_visit 631 */ 632 static int 633 type_cb(const char *name, ctf_id_t type, ulong_t off, int depth, void *arg) 634 { 635 type_visit_t *tvp = arg; 636 mdb_ctf_id_t id; 637 mdb_ctf_id_t base; 638 mdb_ctf_impl_t *basep = (mdb_ctf_impl_t *)&base; 639 640 int ret; 641 642 if (depth < tvp->tv_min_depth) 643 return (0); 644 645 off += tvp->tv_base_offset; 646 depth += tvp->tv_base_depth; 647 648 set_ctf_id(&id, tvp->tv_fp, type); 649 650 (void) mdb_ctf_type_resolve(id, &base); 651 if ((ret = tvp->tv_cb(name, id, base, off, depth, tvp->tv_arg)) != 0) 652 return (ret); 653 654 /* 655 * If the type resolves to a type in a different file, we must have 656 * followed a forward declaration. We need to recurse into the 657 * new type. 658 */ 659 if (basep->mci_fp != tvp->tv_fp && mdb_ctf_type_valid(base)) { 660 type_visit_t tv; 661 662 tv.tv_cb = tvp->tv_cb; 663 tv.tv_arg = tvp->tv_arg; 664 tv.tv_fp = basep->mci_fp; 665 666 tv.tv_base_offset = off; 667 tv.tv_base_depth = depth; 668 tv.tv_min_depth = 1; /* depth = 0 has already been done */ 669 670 ret = ctf_type_visit(basep->mci_fp, basep->mci_id, 671 type_cb, &tv); 672 } 673 return (ret); 674 } 675 676 int 677 mdb_ctf_type_visit(mdb_ctf_id_t id, mdb_ctf_visit_f *func, void *arg) 678 { 679 mdb_ctf_impl_t *idp = (mdb_ctf_impl_t *)&id; 680 type_visit_t tv; 681 int ret; 682 683 tv.tv_cb = func; 684 tv.tv_arg = arg; 685 tv.tv_fp = idp->mci_fp; 686 tv.tv_base_offset = 0; 687 tv.tv_base_depth = 0; 688 tv.tv_min_depth = 0; 689 690 ret = ctf_type_visit(idp->mci_fp, idp->mci_id, type_cb, &tv); 691 692 if (ret == CTF_ERR) 693 return (set_errno(ctf_to_errno(ctf_errno(idp->mci_fp)))); 694 695 return (ret); 696 } 697 698 int 699 mdb_ctf_array_info(mdb_ctf_id_t id, mdb_ctf_arinfo_t *arp) 700 { 701 mdb_ctf_impl_t *idp = (mdb_ctf_impl_t *)&id; 702 ctf_arinfo_t car; 703 704 if (ctf_array_info(idp->mci_fp, idp->mci_id, &car) == CTF_ERR) 705 return (set_errno(ctf_to_errno(ctf_errno(idp->mci_fp)))); 706 707 set_ctf_id(&arp->mta_contents, idp->mci_fp, car.ctr_contents); 708 set_ctf_id(&arp->mta_index, idp->mci_fp, car.ctr_index); 709 710 arp->mta_nelems = car.ctr_nelems; 711 712 return (0); 713 } 714 715 const char * 716 mdb_ctf_enum_name(mdb_ctf_id_t id, int value) 717 { 718 mdb_ctf_impl_t *idp = (mdb_ctf_impl_t *)&id; 719 const char *ret; 720 721 /* resolve the type in case there's a forward declaration */ 722 if (mdb_ctf_type_resolve(id, &id) != 0) 723 return (NULL); 724 725 if ((ret = ctf_enum_name(idp->mci_fp, idp->mci_id, value)) == NULL) 726 (void) set_errno(ctf_to_errno(ctf_errno(idp->mci_fp))); 727 728 return (ret); 729 } 730 731 /* 732 * callback proxy for mdb_ctf_member_iter 733 */ 734 static int 735 member_iter_cb(const char *name, ctf_id_t type, ulong_t off, void *data) 736 { 737 member_iter_t *mip = data; 738 mdb_ctf_id_t id; 739 740 set_ctf_id(&id, mip->mi_fp, type); 741 742 return (mip->mi_cb(name, id, off, mip->mi_arg)); 743 } 744 745 int 746 mdb_ctf_member_iter(mdb_ctf_id_t id, mdb_ctf_member_f *cb, void *data) 747 { 748 mdb_ctf_impl_t *idp = (mdb_ctf_impl_t *)&id; 749 member_iter_t mi; 750 int ret; 751 752 /* resolve the type in case there's a forward declaration */ 753 if ((ret = mdb_ctf_type_resolve(id, &id)) != 0) 754 return (ret); 755 756 mi.mi_cb = cb; 757 mi.mi_arg = data; 758 mi.mi_fp = idp->mci_fp; 759 760 ret = ctf_member_iter(idp->mci_fp, idp->mci_id, member_iter_cb, &mi); 761 762 if (ret == CTF_ERR) 763 return (set_errno(ctf_to_errno(ctf_errno(idp->mci_fp)))); 764 765 return (ret); 766 } 767 768 int 769 mdb_ctf_enum_iter(mdb_ctf_id_t id, mdb_ctf_enum_f *cb, void *data) 770 { 771 mdb_ctf_impl_t *idp = (mdb_ctf_impl_t *)&id; 772 int ret; 773 774 /* resolve the type in case there's a forward declaration */ 775 if ((ret = mdb_ctf_type_resolve(id, &id)) != 0) 776 return (ret); 777 778 return (ctf_enum_iter(idp->mci_fp, idp->mci_id, cb, data)); 779 } 780 781 /* 782 * callback proxy for mdb_ctf_type_iter 783 */ 784 static int 785 type_iter_cb(ctf_id_t type, void *data) 786 { 787 type_iter_t *tip = data; 788 mdb_ctf_id_t id; 789 790 set_ctf_id(&id, tip->ti_fp, type); 791 792 return (tip->ti_cb(id, tip->ti_arg)); 793 } 794 795 int 796 mdb_ctf_type_iter(const char *object, mdb_ctf_type_f *cb, void *data) 797 { 798 ctf_file_t *fp; 799 mdb_tgt_t *t = mdb.m_target; 800 int ret; 801 type_iter_t ti; 802 803 if (object == MDB_CTF_SYNTHETIC_ITER) 804 fp = mdb.m_synth; 805 else 806 fp = mdb_tgt_name_to_ctf(t, object); 807 808 if (fp == NULL) 809 return (-1); 810 811 ti.ti_cb = cb; 812 ti.ti_arg = data; 813 ti.ti_fp = fp; 814 815 if ((ret = ctf_type_iter(fp, type_iter_cb, &ti)) == CTF_ERR) 816 return (set_errno(ctf_to_errno(ctf_errno(fp)))); 817 818 return (ret); 819 } 820 821 /* utility functions */ 822 823 ctf_id_t 824 mdb_ctf_type_id(mdb_ctf_id_t id) 825 { 826 return (((mdb_ctf_impl_t *)&id)->mci_id); 827 } 828 829 ctf_file_t * 830 mdb_ctf_type_file(mdb_ctf_id_t id) 831 { 832 return (((mdb_ctf_impl_t *)&id)->mci_fp); 833 } 834 835 static int 836 member_info_cb(const char *name, mdb_ctf_id_t id, ulong_t off, void *data) 837 { 838 mbr_info_t *mbrp = data; 839 840 if (strcmp(name, mbrp->mbr_member) == 0) { 841 if (mbrp->mbr_offp != NULL) 842 *(mbrp->mbr_offp) = off; 843 if (mbrp->mbr_typep != NULL) 844 *(mbrp->mbr_typep) = id; 845 846 return (1); 847 } 848 849 return (0); 850 } 851 852 int 853 mdb_ctf_member_info(mdb_ctf_id_t id, const char *member, ulong_t *offp, 854 mdb_ctf_id_t *typep) 855 { 856 mbr_info_t mbr; 857 int rc; 858 859 mbr.mbr_member = member; 860 mbr.mbr_offp = offp; 861 mbr.mbr_typep = typep; 862 863 rc = mdb_ctf_member_iter(id, member_info_cb, &mbr); 864 865 /* couldn't get member list */ 866 if (rc == -1) 867 return (-1); /* errno is set for us */ 868 869 /* not a member */ 870 if (rc == 0) 871 return (set_errno(EMDB_CTFNOMEMB)); 872 873 return (0); 874 } 875 876 /* 877 * Returns offset in _bits_ in *retp. 878 */ 879 int 880 mdb_ctf_offsetof(mdb_ctf_id_t id, const char *member, ulong_t *retp) 881 { 882 return (mdb_ctf_member_info(id, member, retp, NULL)); 883 } 884 885 /* 886 * Returns offset in _bytes_, or -1 on failure. 887 */ 888 int 889 mdb_ctf_offsetof_by_name(const char *type, const char *member) 890 { 891 mdb_ctf_id_t id; 892 ulong_t off; 893 894 if (mdb_ctf_lookup_by_name(type, &id) == -1) { 895 mdb_warn("couldn't find type %s", type); 896 return (-1); 897 } 898 899 if (mdb_ctf_offsetof(id, member, &off) == -1) { 900 mdb_warn("couldn't find member %s of type %s", member, type); 901 return (-1); 902 } 903 if (off % 8 != 0) { 904 mdb_warn("member %s of type %s is an unsupported bitfield\n", 905 member, type); 906 return (-1); 907 } 908 off /= 8; 909 910 return (off); 911 } 912 913 914 /*ARGSUSED*/ 915 static int 916 num_members_cb(const char *name, mdb_ctf_id_t id, ulong_t off, void *data) 917 { 918 int *count = data; 919 *count = *count + 1; 920 return (0); 921 } 922 923 int 924 mdb_ctf_num_members(mdb_ctf_id_t id) 925 { 926 int count = 0; 927 928 if (mdb_ctf_member_iter(id, num_members_cb, &count) != 0) 929 return (-1); /* errno is set for us */ 930 931 return (count); 932 } 933 934 typedef struct mbr_contains { 935 char **mbc_bufp; 936 size_t *mbc_lenp; 937 ulong_t *mbc_offp; 938 mdb_ctf_id_t *mbc_idp; 939 ssize_t mbc_total; 940 } mbr_contains_t; 941 942 static int 943 offset_to_name_cb(const char *name, mdb_ctf_id_t id, ulong_t off, void *data) 944 { 945 mbr_contains_t *mbc = data; 946 ulong_t size; 947 ctf_encoding_t e; 948 size_t n; 949 950 if (*mbc->mbc_offp < off) 951 return (0); 952 953 if (mdb_ctf_type_encoding(id, &e) == -1) 954 size = mdb_ctf_type_size(id) * NBBY; 955 else 956 size = e.cte_bits; 957 958 if (off + size <= *mbc->mbc_offp) 959 return (0); 960 961 n = mdb_snprintf(*mbc->mbc_bufp, *mbc->mbc_lenp, "%s", name); 962 mbc->mbc_total += n; 963 if (n > *mbc->mbc_lenp) 964 n = *mbc->mbc_lenp; 965 966 *mbc->mbc_lenp -= n; 967 *mbc->mbc_bufp += n; 968 969 *mbc->mbc_offp -= off; 970 *mbc->mbc_idp = id; 971 972 return (1); 973 } 974 975 ssize_t 976 mdb_ctf_offset_to_name(mdb_ctf_id_t id, ulong_t off, char *buf, size_t len, 977 int dot, mdb_ctf_id_t *midp, ulong_t *moffp) 978 { 979 size_t size; 980 size_t n; 981 mbr_contains_t mbc; 982 983 if (!mdb_ctf_type_valid(id)) 984 return (set_errno(EINVAL)); 985 986 /* 987 * Quick sanity check to make sure the given offset is within 988 * this scope of this type. 989 */ 990 if (mdb_ctf_type_size(id) * NBBY <= off) 991 return (set_errno(EINVAL)); 992 993 mbc.mbc_bufp = &buf; 994 mbc.mbc_lenp = &len; 995 mbc.mbc_offp = &off; 996 mbc.mbc_idp = &id; 997 mbc.mbc_total = 0; 998 999 *buf = '\0'; 1000 1001 for (;;) { 1002 /* 1003 * Check for an exact match. 1004 */ 1005 if (off == 0) 1006 break; 1007 1008 (void) mdb_ctf_type_resolve(id, &id); 1009 1010 /* 1011 * Find the member that contains this offset. 1012 */ 1013 switch (mdb_ctf_type_kind(id)) { 1014 case CTF_K_ARRAY: { 1015 mdb_ctf_arinfo_t ar; 1016 uint_t index; 1017 1018 (void) mdb_ctf_array_info(id, &ar); 1019 size = mdb_ctf_type_size(ar.mta_contents) * NBBY; 1020 index = off / size; 1021 1022 id = ar.mta_contents; 1023 off %= size; 1024 1025 n = mdb_snprintf(buf, len, "[%u]", index); 1026 mbc.mbc_total += n; 1027 if (n > len) 1028 n = len; 1029 1030 buf += n; 1031 len -= n; 1032 break; 1033 } 1034 1035 case CTF_K_STRUCT: { 1036 int ret; 1037 1038 /* 1039 * Find the member that contains this offset 1040 * and continue. 1041 */ 1042 1043 if (dot) { 1044 mbc.mbc_total++; 1045 if (len != 0) { 1046 *buf++ = '.'; 1047 *buf = '\0'; 1048 len--; 1049 } 1050 } 1051 1052 ret = mdb_ctf_member_iter(id, offset_to_name_cb, &mbc); 1053 if (ret == -1) 1054 return (-1); /* errno is set for us */ 1055 1056 /* 1057 * If we did not find a member containing this offset 1058 * (due to holes in the structure), return EINVAL. 1059 */ 1060 if (ret == 0) 1061 return (set_errno(EINVAL)); 1062 1063 break; 1064 } 1065 1066 case CTF_K_UNION: 1067 /* 1068 * Treat unions like atomic entities since we can't 1069 * do more than guess which member of the union 1070 * might be the intended one. 1071 */ 1072 goto done; 1073 1074 case CTF_K_INTEGER: 1075 case CTF_K_FLOAT: 1076 case CTF_K_POINTER: 1077 case CTF_K_ENUM: 1078 goto done; 1079 1080 default: 1081 return (set_errno(EINVAL)); 1082 } 1083 1084 dot = 1; 1085 } 1086 done: 1087 if (midp != NULL) 1088 *midp = id; 1089 if (moffp != NULL) 1090 *moffp = off; 1091 1092 return (mbc.mbc_total); 1093 } 1094 1095 static void 1096 mdb_ctf_warn(uint_t flags, const char *format, ...) 1097 { 1098 va_list alist; 1099 1100 if (flags & MDB_CTF_VREAD_QUIET) 1101 return; 1102 1103 va_start(alist, format); 1104 vwarn(format, alist); 1105 va_end(alist); 1106 } 1107 1108 /* 1109 * Check if two types are structurally the same rather than logically 1110 * the same. That is to say that two types are equal if they have the 1111 * same logical structure rather than having the same ids in CTF-land. 1112 */ 1113 static int type_equals(mdb_ctf_id_t, mdb_ctf_id_t); 1114 1115 static int 1116 type_equals_cb(const char *name, mdb_ctf_id_t amem, ulong_t aoff, void *data) 1117 { 1118 mdb_ctf_id_t b = *(mdb_ctf_id_t *)data; 1119 ulong_t boff; 1120 mdb_ctf_id_t bmem; 1121 1122 /* 1123 * Look up the corresponding member in the other composite type. 1124 */ 1125 if (mdb_ctf_member_info(b, name, &boff, &bmem) != 0) 1126 return (1); 1127 1128 /* 1129 * We don't allow members to be shuffled around. 1130 */ 1131 if (aoff != boff) 1132 return (1); 1133 1134 return (type_equals(amem, bmem) ? 0 : 1); 1135 } 1136 1137 static int 1138 type_equals(mdb_ctf_id_t a, mdb_ctf_id_t b) 1139 { 1140 size_t asz, bsz; 1141 int akind, bkind; 1142 mdb_ctf_arinfo_t aar, bar; 1143 1144 /* 1145 * Resolve both types down to their fundamental types, and make 1146 * sure their sizes and kinds match. 1147 */ 1148 if (mdb_ctf_type_resolve(a, &a) != 0 || 1149 mdb_ctf_type_resolve(b, &b) != 0 || 1150 (asz = mdb_ctf_type_size(a)) == -1UL || 1151 (bsz = mdb_ctf_type_size(b)) == -1UL || 1152 (akind = mdb_ctf_type_kind(a)) == -1 || 1153 (bkind = mdb_ctf_type_kind(b)) == -1 || 1154 asz != bsz || akind != bkind) { 1155 return (0); 1156 } 1157 1158 switch (akind) { 1159 case CTF_K_INTEGER: 1160 case CTF_K_FLOAT: 1161 case CTF_K_POINTER: 1162 /* 1163 * For pointers we could be a little stricter and require 1164 * both pointers to reference types which look vaguely 1165 * similar (for example, we could insist that the two types 1166 * have the same name). However, all we really care about 1167 * here is that the structure of the two types are the same, 1168 * and, in that regard, one pointer is as good as another. 1169 */ 1170 return (1); 1171 1172 case CTF_K_UNION: 1173 case CTF_K_STRUCT: 1174 /* 1175 * The test for the number of members is only strictly 1176 * necessary for unions since we'll find other problems with 1177 * structs. However, the extra check will do no harm. 1178 */ 1179 return (mdb_ctf_num_members(a) == mdb_ctf_num_members(b) && 1180 mdb_ctf_member_iter(a, type_equals_cb, &b) == 0); 1181 1182 case CTF_K_ARRAY: 1183 return (mdb_ctf_array_info(a, &aar) == 0 && 1184 mdb_ctf_array_info(b, &bar) == 0 && 1185 aar.mta_nelems == bar.mta_nelems && 1186 type_equals(aar.mta_index, bar.mta_index) && 1187 type_equals(aar.mta_contents, bar.mta_contents)); 1188 } 1189 1190 return (0); 1191 } 1192 1193 1194 typedef struct member { 1195 char *m_modbuf; 1196 char *m_tgtbuf; 1197 const char *m_tgtname; 1198 mdb_ctf_id_t m_tgtid; 1199 uint_t m_flags; 1200 } member_t; 1201 1202 static int vread_helper(mdb_ctf_id_t, char *, mdb_ctf_id_t, char *, 1203 const char *, uint_t); 1204 1205 static int 1206 member_cb(const char *name, mdb_ctf_id_t modmid, ulong_t modoff, void *data) 1207 { 1208 member_t *mp = data; 1209 char *modbuf = mp->m_modbuf; 1210 mdb_ctf_id_t tgtmid; 1211 char *tgtbuf = mp->m_tgtbuf; 1212 ulong_t tgtoff; 1213 char tgtname[128]; 1214 1215 (void) mdb_snprintf(tgtname, sizeof (tgtname), 1216 "member %s of type %s", name, mp->m_tgtname); 1217 1218 if (mdb_ctf_member_info(mp->m_tgtid, name, &tgtoff, &tgtmid) != 0) { 1219 mdb_ctf_warn(mp->m_flags, 1220 "could not find %s\n", tgtname); 1221 return (set_errno(EMDB_CTFNOMEMB)); 1222 } 1223 1224 return (vread_helper(modmid, modbuf + modoff / NBBY, 1225 tgtmid, tgtbuf + tgtoff / NBBY, tgtname, mp->m_flags)); 1226 } 1227 1228 typedef struct enum_value { 1229 int *ev_modbuf; 1230 const char *ev_name; 1231 } enum_value_t; 1232 1233 static int 1234 enum_cb(const char *name, int value, void *data) 1235 { 1236 enum_value_t *ev = data; 1237 1238 if (strcmp(name, ev->ev_name) == 0) { 1239 *ev->ev_modbuf = value; 1240 return (1); 1241 } 1242 return (0); 1243 } 1244 1245 static int 1246 vread_helper(mdb_ctf_id_t modid, char *modbuf, 1247 mdb_ctf_id_t tgtid, char *tgtbuf, const char *tgtname, uint_t flags) 1248 { 1249 size_t modsz, tgtsz; 1250 int modkind, tgtkind; 1251 member_t mbr; 1252 enum_value_t ev; 1253 int ret; 1254 mdb_ctf_arinfo_t tar, mar; 1255 int i; 1256 char typename[128]; 1257 char mdbtypename[128]; 1258 ctf_encoding_t tgt_encoding, mod_encoding; 1259 boolean_t signed_int = B_FALSE; 1260 1261 if (mdb_ctf_type_name(tgtid, typename, sizeof (typename)) == NULL) { 1262 (void) mdb_snprintf(typename, sizeof (typename), 1263 "#%ul", mdb_ctf_type_id(tgtid)); 1264 } 1265 if (mdb_ctf_type_name(modid, 1266 mdbtypename, sizeof (mdbtypename)) == NULL) { 1267 (void) mdb_snprintf(mdbtypename, sizeof (mdbtypename), 1268 "#%ul", mdb_ctf_type_id(modid)); 1269 } 1270 1271 if (tgtname == NULL) 1272 tgtname = ""; 1273 1274 /* 1275 * Resolve the types to their canonical form. 1276 */ 1277 (void) mdb_ctf_type_resolve(modid, &modid); 1278 (void) mdb_ctf_type_resolve(tgtid, &tgtid); 1279 1280 if ((modkind = mdb_ctf_type_kind(modid)) == -1) { 1281 mdb_ctf_warn(flags, 1282 "couldn't determine type kind of mdb module type %s\n", 1283 mdbtypename); 1284 return (-1); /* errno is set for us */ 1285 } 1286 if ((tgtkind = mdb_ctf_type_kind(tgtid)) == -1) { 1287 mdb_ctf_warn(flags, 1288 "couldn't determine type kind of %s\n", typename); 1289 return (-1); /* errno is set for us */ 1290 } 1291 1292 if ((modsz = mdb_ctf_type_size(modid)) == -1UL) { 1293 mdb_ctf_warn(flags, "couldn't determine type size of " 1294 "mdb module type %s\n", mdbtypename); 1295 return (-1); /* errno is set for us */ 1296 } 1297 if ((tgtsz = mdb_ctf_type_size(tgtid)) == -1UL) { 1298 mdb_ctf_warn(flags, "couldn't determine size of %s (%s)\n", 1299 typename, tgtname); 1300 return (-1); /* errno is set for us */ 1301 } 1302 1303 if (tgtkind == CTF_K_POINTER && modkind == CTF_K_INTEGER && 1304 strcmp(mdbtypename, "uintptr_t") == 0) { 1305 /* allow them to convert a pointer to a uintptr_t */ 1306 ASSERT(modsz == tgtsz); 1307 } else if (tgtkind != modkind) { 1308 mdb_ctf_warn(flags, "unexpected kind for type %s (%s)\n", 1309 typename, tgtname); 1310 return (set_errno(EMDB_INCOMPAT)); 1311 } 1312 1313 switch (tgtkind) { 1314 case CTF_K_INTEGER: 1315 case CTF_K_FLOAT: 1316 /* 1317 * Must determine if the target and module types have the same 1318 * encoding before we can copy them. 1319 */ 1320 if (mdb_ctf_type_encoding(tgtid, &tgt_encoding) != 0) { 1321 mdb_ctf_warn(flags, 1322 "couldn't determine encoding of type %s (%s)\n", 1323 typename, tgtname); 1324 return (-1); /* errno is set for us */ 1325 } 1326 if (mdb_ctf_type_encoding(modid, &mod_encoding) != 0) { 1327 mdb_ctf_warn(flags, "couldn't determine encoding of " 1328 "mdb module type %s\n", mdbtypename); 1329 return (-1); /* errno is set for us */ 1330 } 1331 1332 if (modkind == CTF_K_INTEGER) { 1333 if ((tgt_encoding.cte_format & CTF_INT_SIGNED) != 1334 (mod_encoding.cte_format & CTF_INT_SIGNED)) { 1335 mdb_ctf_warn(flags, 1336 "signedness mismatch between type " 1337 "%s (%s) and mdb module type %s\n", 1338 typename, tgtname, mdbtypename); 1339 return (set_errno(EMDB_INCOMPAT)); 1340 } 1341 signed_int = 1342 ((tgt_encoding.cte_format & CTF_INT_SIGNED) != 0); 1343 } else if (tgt_encoding.cte_format != mod_encoding.cte_format) { 1344 mdb_ctf_warn(flags, 1345 "encoding mismatch (%#x != %#x) between type " 1346 "%s (%s) and mdb module type %s\n", 1347 tgt_encoding.cte_format, mod_encoding.cte_format, 1348 typename, tgtname, mdbtypename); 1349 return (set_errno(EMDB_INCOMPAT)); 1350 } 1351 /* FALLTHROUGH */ 1352 case CTF_K_POINTER: 1353 /* 1354 * If the sizes don't match we need to be tricky to make 1355 * sure that the caller gets the correct data. 1356 */ 1357 if (modsz < tgtsz) { 1358 mdb_ctf_warn(flags, "size of type %s (%s) is too " 1359 "large for mdb module type %s\n", 1360 typename, tgtname, mdbtypename); 1361 return (set_errno(EMDB_INCOMPAT)); 1362 } else if (modsz > tgtsz) { 1363 /* BEGIN CSTYLED */ 1364 /* 1365 * Fill modbuf with 1's for sign extension if target 1366 * buf is a signed integer and its value is negative. 1367 * 1368 * S = sign bit (in most-significant byte) 1369 * 1370 * BIG ENDIAN DATA 1371 * +--------+--------+--------+--------+ 1372 * |S | | | | 1373 * +--------+--------+--------+--------+ 1374 * 0 1 ... sz-1 sz 1375 * 1376 * LITTLE ENDIAN DATA 1377 * +--------+--------+--------+--------+ 1378 * | | | |S | 1379 * +--------+--------+--------+--------+ 1380 * 0 1 ... sz-1 sz 1381 */ 1382 /* END CSTYLED */ 1383 #ifdef _BIG_ENDIAN 1384 if (signed_int && (tgtbuf[0] & 0x80) != 0) 1385 #else 1386 if (signed_int && (tgtbuf[tgtsz - 1] & 0x80) != 0) 1387 #endif 1388 (void) memset(modbuf, 0xFF, modsz); 1389 else 1390 bzero(modbuf, modsz); 1391 #ifdef _BIG_ENDIAN 1392 bcopy(tgtbuf, modbuf + modsz - tgtsz, tgtsz); 1393 #else 1394 bcopy(tgtbuf, modbuf, tgtsz); 1395 #endif 1396 } else { 1397 bcopy(tgtbuf, modbuf, modsz); 1398 } 1399 1400 return (0); 1401 1402 case CTF_K_ENUM: 1403 if (modsz != tgtsz || modsz != sizeof (int)) { 1404 mdb_ctf_warn(flags, "unexpected size of type %s (%s)\n", 1405 typename, tgtname); 1406 return (set_errno(EMDB_INCOMPAT)); 1407 } 1408 1409 /* 1410 * Default to the same value as in the target. 1411 */ 1412 bcopy(tgtbuf, modbuf, sizeof (int)); 1413 1414 /* LINTED */ 1415 i = *(int *)tgtbuf; 1416 1417 /* LINTED */ 1418 ev.ev_modbuf = (int *)modbuf; 1419 ev.ev_name = mdb_ctf_enum_name(tgtid, i); 1420 if (ev.ev_name == NULL) { 1421 mdb_ctf_warn(flags, 1422 "unexpected value %u of enum type %s (%s)\n", 1423 i, typename, tgtname); 1424 return (set_errno(EMDB_INCOMPAT)); 1425 } 1426 1427 ret = mdb_ctf_enum_iter(modid, enum_cb, &ev); 1428 if (ret == 0) { 1429 /* value not found */ 1430 mdb_ctf_warn(flags, 1431 "unexpected value %s (%u) of enum type %s (%s)\n", 1432 ev.ev_name, i, typename, tgtname); 1433 return (set_errno(EMDB_INCOMPAT)); 1434 } else if (ret == 1) { 1435 /* value found */ 1436 return (0); 1437 } else if (ret == -1) { 1438 mdb_ctf_warn(flags, "could not iterate enum %s (%s)\n", 1439 typename, tgtname); 1440 } 1441 return (ret); 1442 1443 case CTF_K_STRUCT: 1444 mbr.m_modbuf = modbuf; 1445 mbr.m_tgtbuf = tgtbuf; 1446 mbr.m_tgtid = tgtid; 1447 mbr.m_flags = flags; 1448 mbr.m_tgtname = typename; 1449 1450 return (mdb_ctf_member_iter(modid, member_cb, &mbr)); 1451 1452 case CTF_K_UNION: 1453 1454 /* 1455 * Unions are a little tricky. The only time it's truly 1456 * safe to read in a union is if no part of the union or 1457 * any of its component types have changed. The correct 1458 * use of this feature is to read the containing structure, 1459 * figure out which component of the union is valid, compute 1460 * the location of that in the target and then read in 1461 * that part of the structure. 1462 */ 1463 1464 if (!type_equals(modid, tgtid)) { 1465 mdb_ctf_warn(flags, "inexact match for union %s (%s)\n", 1466 typename, tgtname); 1467 return (set_errno(EMDB_INCOMPAT)); 1468 } 1469 1470 ASSERT(modsz == tgtsz); 1471 1472 bcopy(tgtbuf, modbuf, modsz); 1473 1474 return (0); 1475 1476 case CTF_K_ARRAY: 1477 if (mdb_ctf_array_info(tgtid, &tar) != 0) { 1478 mdb_ctf_warn(flags, 1479 "couldn't get array info for %s (%s)\n", 1480 typename, tgtname); 1481 return (-1); /* errno is set for us */ 1482 } 1483 if (mdb_ctf_array_info(modid, &mar) != 0) { 1484 mdb_ctf_warn(flags, 1485 "couldn't get array info for mdb module type %s\n", 1486 mdbtypename); 1487 return (-1); /* errno is set for us */ 1488 } 1489 1490 if (tar.mta_nelems != mar.mta_nelems) { 1491 mdb_ctf_warn(flags, 1492 "unexpected array size (%u) for type %s (%s)\n", 1493 tar.mta_nelems, typename, tgtname); 1494 return (set_errno(EMDB_INCOMPAT)); 1495 } 1496 1497 if ((modsz = mdb_ctf_type_size(mar.mta_contents)) == -1UL) { 1498 mdb_ctf_warn(flags, "couldn't determine type size of " 1499 "mdb module type %s\n", mdbtypename); 1500 return (-1); /* errno is set for us */ 1501 } 1502 if ((tgtsz = mdb_ctf_type_size(tar.mta_contents)) == -1UL) { 1503 mdb_ctf_warn(flags, 1504 "couldn't determine size of %s (%s)\n", 1505 typename, tgtname); 1506 return (-1); /* errno is set for us */ 1507 } 1508 1509 for (i = 0; i < tar.mta_nelems; i++) { 1510 ret = vread_helper(mar.mta_contents, modbuf + i * modsz, 1511 tar.mta_contents, tgtbuf + i * tgtsz, 1512 tgtname, flags); 1513 1514 if (ret != 0) 1515 return (ret); 1516 } 1517 1518 return (0); 1519 } 1520 1521 mdb_ctf_warn(flags, "unsupported kind %d for type %s (%s)\n", 1522 modkind, typename, tgtname); 1523 return (set_errno(EMDB_INCOMPAT)); 1524 } 1525 1526 /* 1527 * Like mdb_vread(), mdb_ctf_vread() is used to read from the target's 1528 * virtual address space. However, mdb_ctf_vread() can be used to safely 1529 * read a complex type (e.g. a struct) from the target, even if MDB was compiled 1530 * against a different definition of that type (e.g. when debugging a crash 1531 * dump from an older release). 1532 * 1533 * Callers can achieve this by defining their own type which corresponds to the 1534 * type in the target, but contains only the members that the caller requires. 1535 * Using the CTF type information embedded in the target, mdb_ctf_vread will 1536 * find the required members in the target and fill in the caller's structure. 1537 * The members are located by name, and their types are verified to be 1538 * compatible. 1539 * 1540 * By convention, the caller will declare a type with the name "mdb_<type>", 1541 * where <type> is the name of the type in the target (e.g. mdb_zio_t). This 1542 * type will contain the members that the caller is interested in. For example: 1543 * 1544 * typedef struct mdb_zio { 1545 * enum zio_type io_type; 1546 * uintptr_t io_waiter; 1547 * struct { 1548 * struct { 1549 * uintptr_t list_next; 1550 * } list_head; 1551 * } io_parent_list; 1552 * int io_error; 1553 * } mdb_zio_t; 1554 * 1555 * mdb_zio_t zio; 1556 * error = mdb_ctf_vread(&zio, "zio_t", "mdb_zio_t", zio_target_addr, 0); 1557 * 1558 * If a given MDB module has different dcmds or walkers that need to read 1559 * different members from the same struct, then different "mdb_" types 1560 * should be declared for each caller. By convention, these types should 1561 * be named "mdb_<dcmd or walker>_<type>", e.g. mdb_findstack_kthread_t 1562 * for ::findstack. If the MDB module is compiled from several source files, 1563 * one must be especially careful to not define different types with the 1564 * same name in different source files, because the compiler can not detect 1565 * this error. 1566 * 1567 * Enums will also be translated by name, so the mdb module will receive 1568 * the enum value it expects even if the target has renumbered the enum. 1569 * Warning: it will therefore only work with enums are only used to store 1570 * legitimate enum values (not several values or-ed together). 1571 * 1572 * By default, if mdb_ctf_vread() can not find any members or enum values, 1573 * it will print a descriptive message (with mdb_warn()) and fail. 1574 * Passing MDB_CTF_VREAD_QUIET in 'flags' will suppress the warning message. 1575 * Additional flags can be used to ignore specific types of translation 1576 * failure, but should be used with caution, because they will silently leave 1577 * the caller's buffer uninitialized. 1578 */ 1579 int 1580 mdb_ctf_vread(void *modbuf, const char *target_typename, 1581 const char *mdb_typename, uintptr_t addr, uint_t flags) 1582 { 1583 ctf_file_t *mfp; 1584 ctf_id_t mid; 1585 void *tgtbuf; 1586 size_t size; 1587 mdb_ctf_id_t tgtid; 1588 mdb_ctf_id_t modid; 1589 mdb_module_t *mod; 1590 1591 if ((mod = mdb_get_module()) == NULL || (mfp = mod->mod_ctfp) == NULL) { 1592 mdb_ctf_warn(flags, "no ctf data found for mdb module %s\n", 1593 mod->mod_name); 1594 return (set_errno(EMDB_NOCTF)); 1595 } 1596 1597 if ((mid = ctf_lookup_by_name(mfp, mdb_typename)) == CTF_ERR) { 1598 mdb_ctf_warn(flags, "couldn't find ctf data for " 1599 "type %s in mdb module %s\n", 1600 mdb_typename, mod->mod_name); 1601 return (set_errno(ctf_to_errno(ctf_errno(mfp)))); 1602 } 1603 1604 set_ctf_id(&modid, mfp, mid); 1605 1606 if (mdb_ctf_lookup_by_name(target_typename, &tgtid) != 0) { 1607 mdb_ctf_warn(flags, 1608 "couldn't find type %s in target's ctf data\n", 1609 target_typename); 1610 return (set_errno(EMDB_NOCTF)); 1611 } 1612 1613 /* 1614 * Read the data out of the target's address space. 1615 */ 1616 if ((size = mdb_ctf_type_size(tgtid)) == -1UL) { 1617 mdb_ctf_warn(flags, "couldn't determine size of type %s\n", 1618 target_typename); 1619 return (-1); /* errno is set for us */ 1620 } 1621 1622 tgtbuf = mdb_alloc(size, UM_SLEEP | UM_GC); 1623 1624 if (mdb_vread(tgtbuf, size, addr) < 0) { 1625 mdb_ctf_warn(flags, "couldn't read %s from %p\n", 1626 target_typename, addr); 1627 return (-1); /* errno is set for us */ 1628 } 1629 1630 return (vread_helper(modid, modbuf, tgtid, tgtbuf, NULL, flags)); 1631 } 1632 1633 /* 1634 * Note: mdb_ctf_readsym() doesn't take separate parameters for the name 1635 * of the target's type vs the mdb module's type. Use with complicated 1636 * types (e.g. structs) may result in unnecessary failure if a member of 1637 * the struct has been changed in the target, but is not actually needed 1638 * by the mdb module. Use mdb_lookup_by_name() + mdb_ctf_vread() to 1639 * avoid this problem. 1640 */ 1641 int 1642 mdb_ctf_readsym(void *buf, const char *typename, const char *name, uint_t flags) 1643 { 1644 GElf_Sym sym; 1645 1646 if (mdb_lookup_by_obj(MDB_TGT_OBJ_EVERY, name, &sym) != 0) { 1647 mdb_ctf_warn(flags, "couldn't find symbol %s\n", name); 1648 return (-1); /* errno is set for us */ 1649 } 1650 1651 return (mdb_ctf_vread(buf, typename, typename, sym.st_value, flags)); 1652 } 1653 1654 ctf_file_t * 1655 mdb_ctf_bufopen(const void *ctf_va, size_t ctf_size, const void *sym_va, 1656 Shdr *symhdr, const void *str_va, Shdr *strhdr, int *errp) 1657 { 1658 ctf_sect_t ctdata, symtab, strtab; 1659 1660 ctdata.cts_name = ".SUNW_ctf"; 1661 ctdata.cts_type = SHT_PROGBITS; 1662 ctdata.cts_flags = 0; 1663 ctdata.cts_data = ctf_va; 1664 ctdata.cts_size = ctf_size; 1665 ctdata.cts_entsize = 1; 1666 ctdata.cts_offset = 0; 1667 1668 symtab.cts_name = ".symtab"; 1669 symtab.cts_type = symhdr->sh_type; 1670 symtab.cts_flags = symhdr->sh_flags; 1671 symtab.cts_data = sym_va; 1672 symtab.cts_size = symhdr->sh_size; 1673 symtab.cts_entsize = symhdr->sh_entsize; 1674 symtab.cts_offset = symhdr->sh_offset; 1675 1676 strtab.cts_name = ".strtab"; 1677 strtab.cts_type = strhdr->sh_type; 1678 strtab.cts_flags = strhdr->sh_flags; 1679 strtab.cts_data = str_va; 1680 strtab.cts_size = strhdr->sh_size; 1681 strtab.cts_entsize = strhdr->sh_entsize; 1682 strtab.cts_offset = strhdr->sh_offset; 1683 1684 return (ctf_bufopen(&ctdata, &symtab, &strtab, errp)); 1685 } 1686 1687 int 1688 mdb_ctf_synthetics_init(void) 1689 { 1690 int err; 1691 1692 if ((mdb.m_synth = ctf_create(&err)) == NULL) 1693 return (set_errno(ctf_to_errno(err))); 1694 1695 return (0); 1696 } 1697 1698 void 1699 mdb_ctf_synthetics_fini(void) 1700 { 1701 if (mdb.m_synth == NULL) 1702 return; 1703 1704 ctf_close(mdb.m_synth); 1705 mdb.m_synth = NULL; 1706 } 1707 1708 int 1709 mdb_ctf_synthetics_create_base(int kind) 1710 { 1711 const synth_intrinsic_t *synp; 1712 const synth_typedef_t *sytp; 1713 int err; 1714 ctf_id_t id; 1715 ctf_file_t *cp = mdb.m_synth; 1716 1717 if (mdb.m_synth == NULL) { 1718 mdb_printf("synthetic types disabled: ctf create failed\n"); 1719 return (1); 1720 } 1721 1722 switch (kind) { 1723 case SYNTHETIC_ILP32: 1724 synp = synth_builtins32; 1725 sytp = synth_typedefs32; 1726 break; 1727 case SYNTHETIC_LP64: 1728 synp = synth_builtins64; 1729 sytp = synth_typedefs64; 1730 break; 1731 default: 1732 mdb_dprintf(MDB_DBG_CTF, "invalid type of intrinsic: %d\n", 1733 kind); 1734 return (1); 1735 } 1736 1737 err = 0; 1738 for (; synp->syn_name != NULL; synp++) { 1739 if (synp->syn_kind == CTF_K_INTEGER) { 1740 err = ctf_add_integer(cp, CTF_ADD_ROOT, synp->syn_name, 1741 &synp->syn_enc); 1742 } else { 1743 err = ctf_add_float(cp, CTF_ADD_ROOT, synp->syn_name, 1744 &synp->syn_enc); 1745 } 1746 1747 if (err == CTF_ERR) { 1748 mdb_dprintf(MDB_DBG_CTF, "couldn't add synthetic " 1749 "type: %s\n", synp->syn_name); 1750 goto discard; 1751 } 1752 } 1753 1754 if (ctf_update(cp) == CTF_ERR) { 1755 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types\n"); 1756 goto discard; 1757 } 1758 1759 for (; sytp->syt_src != NULL; sytp++) { 1760 id = ctf_lookup_by_name(cp, sytp->syt_src); 1761 if (id == CTF_ERR) { 1762 mdb_dprintf(MDB_DBG_CTF, "cailed to lookup %s: %s\n", 1763 sytp->syt_src, ctf_errmsg(ctf_errno(cp))); 1764 goto discard; 1765 } 1766 if (ctf_add_typedef(cp, CTF_ADD_ROOT, sytp->syt_targ, id) == 1767 CTF_ERR) { 1768 mdb_dprintf(MDB_DBG_CTF, "couldn't add typedef %s " 1769 "%s: %s\n", sytp->syt_targ, sytp->syt_src, 1770 ctf_errmsg(ctf_errno(cp))); 1771 goto discard; 1772 } 1773 } 1774 1775 if (ctf_update(cp) == CTF_ERR) { 1776 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types\n"); 1777 goto discard; 1778 } 1779 1780 return (0); 1781 1782 discard: 1783 err = set_errno(ctf_to_errno(ctf_errno(cp))); 1784 (void) ctf_discard(cp); 1785 return (err); 1786 } 1787 1788 int 1789 mdb_ctf_synthetics_reset(void) 1790 { 1791 mdb_ctf_synthetics_fini(); 1792 return (mdb_ctf_synthetics_init()); 1793 } 1794 1795 int 1796 mdb_ctf_add_typedef(const char *name, const mdb_ctf_id_t *p, mdb_ctf_id_t *new) 1797 { 1798 ctf_id_t rid; 1799 mdb_ctf_id_t tid; 1800 mdb_ctf_impl_t *mcip = (mdb_ctf_impl_t *)p; 1801 1802 if (mdb.m_synth == NULL) { 1803 mdb_printf("synthetic types disabled: ctf create failed\n"); 1804 return (1); 1805 } 1806 1807 if (mdb_ctf_lookup_by_name(name, &tid) == 0) { 1808 mdb_dprintf(MDB_DBG_CTF, "failed to add type %s: a type " 1809 "with that name already exists\n", name); 1810 return (set_errno(EEXIST)); 1811 } 1812 1813 rid = ctf_add_type(mdb.m_synth, mcip->mci_fp, mcip->mci_id); 1814 if (rid == CTF_ERR) { 1815 mdb_dprintf(MDB_DBG_CTF, "failed to add reference type: %s\n", 1816 ctf_errmsg(ctf_errno(mdb.m_synth))); 1817 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1818 } 1819 rid = ctf_add_typedef(mdb.m_synth, CTF_ADD_ROOT, name, rid); 1820 if (rid == CTF_ERR) { 1821 mdb_dprintf(MDB_DBG_CTF, "failed to add typedef: %s", 1822 ctf_errmsg(ctf_errno(mdb.m_synth))); 1823 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1824 } 1825 1826 if (ctf_update(mdb.m_synth) == CTF_ERR) { 1827 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types: %s", 1828 ctf_errmsg(ctf_errno(mdb.m_synth))); 1829 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1830 } 1831 1832 if (new != NULL) 1833 set_ctf_id(new, mdb.m_synth, rid); 1834 1835 return (0); 1836 } 1837 1838 int 1839 mdb_ctf_add_struct(const char *name, mdb_ctf_id_t *rid) 1840 { 1841 mdb_ctf_id_t tid; 1842 ctf_id_t id; 1843 1844 if (mdb.m_synth == NULL) { 1845 mdb_printf("synthetic types disabled: ctf create failed\n"); 1846 return (1); 1847 } 1848 1849 if (name != NULL && mdb_ctf_lookup_by_name(name, &tid) == 0) { 1850 mdb_dprintf(MDB_DBG_CTF, "failed to add type %s: a type " 1851 "with that name already exists\n", name); 1852 return (set_errno(EEXIST)); 1853 } 1854 1855 if ((id = ctf_add_struct(mdb.m_synth, CTF_ADD_ROOT, name)) == 1856 CTF_ERR) { 1857 mdb_dprintf(MDB_DBG_CTF, "failed to add struct: %s\n", 1858 ctf_errmsg(ctf_errno(mdb.m_synth))); 1859 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1860 } 1861 1862 if (ctf_update(mdb.m_synth) == CTF_ERR) { 1863 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types: %s", 1864 ctf_errmsg(ctf_errno(mdb.m_synth))); 1865 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1866 } 1867 1868 if (rid != NULL) 1869 set_ctf_id(rid, mdb.m_synth, id); 1870 1871 return (0); 1872 } 1873 1874 int 1875 mdb_ctf_add_union(const char *name, mdb_ctf_id_t *rid) 1876 { 1877 mdb_ctf_id_t tid; 1878 ctf_id_t id; 1879 1880 if (mdb.m_synth == NULL) { 1881 mdb_printf("synthetic types disabled: ctf create failed\n"); 1882 return (1); 1883 } 1884 1885 if (name != NULL && mdb_ctf_lookup_by_name(name, &tid) == 0) { 1886 mdb_dprintf(MDB_DBG_CTF, "failed to add type %s: a type " 1887 "with that name already exists\n", name); 1888 return (set_errno(EEXIST)); 1889 } 1890 1891 if ((id = ctf_add_union(mdb.m_synth, CTF_ADD_ROOT, name)) == 1892 CTF_ERR) { 1893 mdb_dprintf(MDB_DBG_CTF, "failed to add union: %s\n", 1894 ctf_errmsg(ctf_errno(mdb.m_synth))); 1895 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1896 } 1897 1898 if (ctf_update(mdb.m_synth) == CTF_ERR) { 1899 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types: %s", 1900 ctf_errmsg(ctf_errno(mdb.m_synth))); 1901 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1902 } 1903 1904 if (rid != NULL) 1905 set_ctf_id(rid, mdb.m_synth, id); 1906 1907 return (0); 1908 } 1909 1910 int 1911 mdb_ctf_add_member(const mdb_ctf_id_t *p, const char *name, 1912 const mdb_ctf_id_t *mtype, mdb_ctf_id_t *rid) 1913 { 1914 ctf_id_t id, mtid; 1915 mdb_ctf_impl_t *mcip = (mdb_ctf_impl_t *)p; 1916 mdb_ctf_impl_t *mcim = (mdb_ctf_impl_t *)mtype; 1917 1918 if (mdb.m_synth == NULL) { 1919 mdb_printf("synthetic types disabled: ctf create failed\n"); 1920 return (DCMD_ERR); 1921 } 1922 1923 if (mcip->mci_fp != mdb.m_synth) { 1924 mdb_dprintf(MDB_DBG_CTF, "requested to add member to a type " 1925 "that wasn't created from a synthetic\n"); 1926 return (set_errno(EINVAL)); 1927 } 1928 1929 mtid = ctf_add_type(mdb.m_synth, mcim->mci_fp, mcim->mci_id); 1930 if (mtid == CTF_ERR) { 1931 mdb_dprintf(MDB_DBG_CTF, "failed to add member type: %s\n", 1932 ctf_errmsg(ctf_errno(mdb.m_synth))); 1933 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1934 } 1935 1936 if (ctf_update(mdb.m_synth) == CTF_ERR) { 1937 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types: %s", 1938 ctf_errmsg(ctf_errno(mdb.m_synth))); 1939 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1940 } 1941 1942 id = ctf_add_member(mdb.m_synth, mcip->mci_id, name, mtid); 1943 if (id == CTF_ERR) { 1944 mdb_dprintf(MDB_DBG_CTF, "failed to add member %s: %s\n", 1945 name, ctf_errmsg(ctf_errno(mdb.m_synth))); 1946 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1947 } 1948 1949 if (ctf_update(mdb.m_synth) == CTF_ERR) { 1950 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types: %s", 1951 ctf_errmsg(ctf_errno(mdb.m_synth))); 1952 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1953 } 1954 1955 if (rid != NULL) 1956 set_ctf_id(rid, mdb.m_synth, id); 1957 1958 return (0); 1959 } 1960 1961 int 1962 mdb_ctf_add_array(const mdb_ctf_arinfo_t *marp, mdb_ctf_id_t *rid) 1963 { 1964 mdb_ctf_impl_t *mcip; 1965 ctf_arinfo_t car; 1966 ctf_id_t id; 1967 1968 if (mdb.m_synth == NULL) { 1969 mdb_printf("synthetic types disabled: ctf create failed\n"); 1970 return (1); 1971 } 1972 1973 car.ctr_nelems = marp->mta_nelems; 1974 1975 mcip = (mdb_ctf_impl_t *)&marp->mta_contents; 1976 id = ctf_add_type(mdb.m_synth, mcip->mci_fp, mcip->mci_id); 1977 if (id == CTF_ERR) { 1978 mdb_dprintf(MDB_DBG_CTF, "failed to add member type: %s\n", 1979 ctf_errmsg(ctf_errno(mdb.m_synth))); 1980 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1981 } 1982 car.ctr_contents = id; 1983 1984 mcip = (mdb_ctf_impl_t *)&marp->mta_index; 1985 id = ctf_add_type(mdb.m_synth, mcip->mci_fp, mcip->mci_id); 1986 if (id == CTF_ERR) { 1987 mdb_dprintf(MDB_DBG_CTF, "failed to add member type: %s\n", 1988 ctf_errmsg(ctf_errno(mdb.m_synth))); 1989 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1990 } 1991 car.ctr_index = id; 1992 1993 if (ctf_update(mdb.m_synth) == CTF_ERR) { 1994 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types: %s", 1995 ctf_errmsg(ctf_errno(mdb.m_synth))); 1996 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 1997 } 1998 1999 id = ctf_add_array(mdb.m_synth, CTF_ADD_ROOT, &car); 2000 if (id == CTF_ERR) { 2001 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types: %s", 2002 ctf_errmsg(ctf_errno(mdb.m_synth))); 2003 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 2004 } 2005 2006 if (ctf_update(mdb.m_synth) == CTF_ERR) { 2007 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types: %s", 2008 ctf_errmsg(ctf_errno(mdb.m_synth))); 2009 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 2010 } 2011 2012 if (rid != NULL) 2013 set_ctf_id(rid, mdb.m_synth, id); 2014 2015 return (0); 2016 } 2017 2018 int 2019 mdb_ctf_add_pointer(const mdb_ctf_id_t *p, mdb_ctf_id_t *rid) 2020 { 2021 ctf_id_t id; 2022 mdb_ctf_impl_t *mcip = (mdb_ctf_impl_t *)p; 2023 2024 if (mdb.m_synth == NULL) { 2025 mdb_printf("synthetic types disabled: ctf create failed\n"); 2026 return (1); 2027 } 2028 2029 id = ctf_add_type(mdb.m_synth, mcip->mci_fp, mcip->mci_id); 2030 if (id == CTF_ERR) { 2031 mdb_dprintf(MDB_DBG_CTF, "failed to add pointer type: %s\n", 2032 ctf_errmsg(ctf_errno(mdb.m_synth))); 2033 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 2034 } 2035 2036 if (ctf_update(mdb.m_synth) == CTF_ERR) { 2037 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types: %s", 2038 ctf_errmsg(ctf_errno(mdb.m_synth))); 2039 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 2040 } 2041 2042 2043 id = ctf_add_pointer(mdb.m_synth, CTF_ADD_ROOT, id); 2044 if (id == CTF_ERR) { 2045 mdb_dprintf(MDB_DBG_CTF, "failed to add pointer: %s\n", 2046 ctf_errmsg(ctf_errno(mdb.m_synth))); 2047 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 2048 } 2049 2050 if (ctf_update(mdb.m_synth) == CTF_ERR) { 2051 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types: %s", 2052 ctf_errmsg(ctf_errno(mdb.m_synth))); 2053 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 2054 } 2055 2056 2057 if (rid != NULL) 2058 set_ctf_id(rid, mdb.m_synth, id); 2059 2060 return (0); 2061 } 2062 2063 int 2064 mdb_ctf_type_delete(const mdb_ctf_id_t *id) 2065 { 2066 int ret; 2067 2068 mdb_ctf_impl_t *mcip = (mdb_ctf_impl_t *)id; 2069 2070 if (mcip->mci_fp != mdb.m_synth) { 2071 mdb_warn("bad ctf_file_t, expected synth container\n"); 2072 return (1); 2073 } 2074 2075 ret = ctf_delete_type(mcip->mci_fp, mcip->mci_id); 2076 if (ret != 0) { 2077 mdb_dprintf(MDB_DBG_CTF, "failed to delete synthetic type: %s", 2078 ctf_errmsg(ctf_errno(mdb.m_synth))); 2079 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 2080 } 2081 2082 if (ctf_update(mdb.m_synth) == CTF_ERR) { 2083 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types: %s", 2084 ctf_errmsg(ctf_errno(mdb.m_synth))); 2085 return (set_errno(ctf_to_errno(ctf_errno(mdb.m_synth)))); 2086 } 2087 2088 return (0); 2089 } 2090 2091 static int 2092 mdb_ctf_synthetics_file_cb(mdb_ctf_id_t id, void *arg) 2093 { 2094 ctf_file_t *targ = arg; 2095 mdb_ctf_impl_t *mcip = (mdb_ctf_impl_t *)&id; 2096 2097 if (ctf_add_type(targ, mcip->mci_fp, mcip->mci_id) == CTF_ERR) { 2098 mdb_dprintf(MDB_DBG_CTF, "failed to add type %d: %s\n", 2099 mcip->mci_id, ctf_errmsg(ctf_errno(mcip->mci_fp))); 2100 return (set_errno(ctf_to_errno(ctf_errno(mcip->mci_fp)))); 2101 } 2102 2103 return (0); 2104 } 2105 2106 int 2107 mdb_ctf_synthetics_from_file(const char *file) 2108 { 2109 ctf_file_t *fp, *syn = mdb.m_synth; 2110 int ret; 2111 type_iter_t ti; 2112 2113 if (syn == NULL) { 2114 mdb_warn("synthetic types disabled: ctf create failed\n"); 2115 return (1); 2116 } 2117 2118 if ((fp = mdb_ctf_open(file, &ret)) == NULL) { 2119 mdb_warn("failed to parse ctf data in %s: %s\n", file, 2120 ctf_errmsg(ret)); 2121 return (1); 2122 } 2123 2124 ret = DCMD_OK; 2125 ti.ti_fp = fp; 2126 ti.ti_arg = syn; 2127 ti.ti_cb = mdb_ctf_synthetics_file_cb; 2128 if (ctf_type_iter(fp, type_iter_cb, &ti) == CTF_ERR) { 2129 ret = set_errno(ctf_to_errno(ctf_errno(fp))); 2130 mdb_warn("failed to add types"); 2131 goto cleanup; 2132 } 2133 2134 if (ctf_update(syn) == CTF_ERR) { 2135 mdb_dprintf(MDB_DBG_CTF, "failed to update synthetic types\n"); 2136 ret = set_errno(ctf_to_errno(ctf_errno(fp))); 2137 } 2138 2139 cleanup: 2140 ctf_close(fp); 2141 if (ret != 0) 2142 (void) ctf_discard(syn); 2143 return (ret); 2144 } 2145