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4757 ZFS embedded-data block pointers ("zero block compression")
[unleashed.git] / usr / src / cmd / mdb / common / mdb / mdb_ctf.c
blob072ac9ef12a0f5401e9df2db969a1ccb9f9203e6
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 *)&mid;
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 *)&mid;
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 }
Unleashed OS