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316afdb1 NA |
1 | /* Type handling functions. |
2 | Copyright (C) 2019 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of libctf. | |
5 | ||
6 | libctf is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
14 | See the GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; see the file COPYING. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include <ctf-impl.h> | |
21 | #include <string.h> | |
22 | ||
23 | /* Determine whether a type is a parent or a child. */ | |
24 | ||
25 | int | |
26 | ctf_type_isparent (ctf_file_t *fp, ctf_id_t id) | |
27 | { | |
28 | return (LCTF_TYPE_ISPARENT (fp, id)); | |
29 | } | |
30 | ||
31 | int | |
32 | ctf_type_ischild (ctf_file_t * fp, ctf_id_t id) | |
33 | { | |
34 | return (LCTF_TYPE_ISCHILD (fp, id)); | |
35 | } | |
36 | ||
37 | /* Iterate over the members of a STRUCT or UNION. We pass the name, member | |
38 | type, and offset of each member to the specified callback function. */ | |
39 | ||
40 | int | |
41 | ctf_member_iter (ctf_file_t *fp, ctf_id_t type, ctf_member_f *func, void *arg) | |
42 | { | |
43 | ctf_file_t *ofp = fp; | |
44 | const ctf_type_t *tp; | |
676c3ecb | 45 | ctf_dtdef_t *dtd; |
316afdb1 NA |
46 | ssize_t size, increment; |
47 | uint32_t kind, n; | |
48 | int rc; | |
49 | ||
50 | if ((type = ctf_type_resolve (fp, type)) == CTF_ERR) | |
a0486bac | 51 | return -1; /* errno is set for us. */ |
316afdb1 NA |
52 | |
53 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
a0486bac | 54 | return -1; /* errno is set for us. */ |
316afdb1 NA |
55 | |
56 | (void) ctf_get_ctt_size (fp, tp, &size, &increment); | |
57 | kind = LCTF_INFO_KIND (fp, tp->ctt_info); | |
58 | ||
59 | if (kind != CTF_K_STRUCT && kind != CTF_K_UNION) | |
60 | return (ctf_set_errno (ofp, ECTF_NOTSOU)); | |
61 | ||
676c3ecb | 62 | if ((dtd = ctf_dynamic_type (fp, type)) == NULL) |
316afdb1 | 63 | { |
676c3ecb | 64 | if (size < CTF_LSTRUCT_THRESH) |
316afdb1 | 65 | { |
676c3ecb NA |
66 | const ctf_member_t *mp = (const ctf_member_t *) ((uintptr_t) tp + |
67 | increment); | |
68 | ||
69 | for (n = LCTF_INFO_VLEN (fp, tp->ctt_info); n != 0; n--, mp++) | |
70 | { | |
71 | const char *name = ctf_strptr (fp, mp->ctm_name); | |
72 | if ((rc = func (name, mp->ctm_type, mp->ctm_offset, arg)) != 0) | |
316afdb1 | 73 | return rc; |
676c3ecb | 74 | } |
316afdb1 | 75 | } |
676c3ecb NA |
76 | else |
77 | { | |
78 | const ctf_lmember_t *lmp = (const ctf_lmember_t *) ((uintptr_t) tp + | |
79 | increment); | |
316afdb1 | 80 | |
676c3ecb NA |
81 | for (n = LCTF_INFO_VLEN (fp, tp->ctt_info); n != 0; n--, lmp++) |
82 | { | |
83 | const char *name = ctf_strptr (fp, lmp->ctlm_name); | |
84 | if ((rc = func (name, lmp->ctlm_type, | |
85 | (unsigned long) CTF_LMEM_OFFSET (lmp), arg)) != 0) | |
86 | return rc; | |
87 | } | |
88 | } | |
316afdb1 NA |
89 | } |
90 | else | |
91 | { | |
676c3ecb | 92 | ctf_dmdef_t *dmd; |
316afdb1 | 93 | |
676c3ecb NA |
94 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); |
95 | dmd != NULL; dmd = ctf_list_next (dmd)) | |
316afdb1 | 96 | { |
676c3ecb NA |
97 | if ((rc = func (dmd->dmd_name, dmd->dmd_type, |
98 | dmd->dmd_offset, arg)) != 0) | |
316afdb1 NA |
99 | return rc; |
100 | } | |
101 | } | |
102 | ||
103 | return 0; | |
104 | } | |
105 | ||
106 | /* Iterate over the members of an ENUM. We pass the string name and associated | |
107 | integer value of each enum element to the specified callback function. */ | |
108 | ||
109 | int | |
110 | ctf_enum_iter (ctf_file_t *fp, ctf_id_t type, ctf_enum_f *func, void *arg) | |
111 | { | |
112 | ctf_file_t *ofp = fp; | |
113 | const ctf_type_t *tp; | |
114 | const ctf_enum_t *ep; | |
676c3ecb | 115 | ctf_dtdef_t *dtd; |
316afdb1 NA |
116 | ssize_t increment; |
117 | uint32_t n; | |
118 | int rc; | |
119 | ||
120 | if ((type = ctf_type_resolve_unsliced (fp, type)) == CTF_ERR) | |
a0486bac | 121 | return -1; /* errno is set for us. */ |
316afdb1 NA |
122 | |
123 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
a0486bac | 124 | return -1; /* errno is set for us. */ |
316afdb1 NA |
125 | |
126 | if (LCTF_INFO_KIND (fp, tp->ctt_info) != CTF_K_ENUM) | |
127 | return (ctf_set_errno (ofp, ECTF_NOTENUM)); | |
128 | ||
129 | (void) ctf_get_ctt_size (fp, tp, NULL, &increment); | |
130 | ||
676c3ecb NA |
131 | if ((dtd = ctf_dynamic_type (ofp, type)) == NULL) |
132 | { | |
133 | ep = (const ctf_enum_t *) ((uintptr_t) tp + increment); | |
316afdb1 | 134 | |
676c3ecb NA |
135 | for (n = LCTF_INFO_VLEN (fp, tp->ctt_info); n != 0; n--, ep++) |
136 | { | |
137 | const char *name = ctf_strptr (fp, ep->cte_name); | |
138 | if ((rc = func (name, ep->cte_value, arg)) != 0) | |
139 | return rc; | |
140 | } | |
141 | } | |
142 | else | |
316afdb1 | 143 | { |
676c3ecb NA |
144 | ctf_dmdef_t *dmd; |
145 | ||
146 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
147 | dmd != NULL; dmd = ctf_list_next (dmd)) | |
148 | { | |
149 | if ((rc = func (dmd->dmd_name, dmd->dmd_value, arg)) != 0) | |
150 | return rc; | |
151 | } | |
316afdb1 NA |
152 | } |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
157 | /* Iterate over every root (user-visible) type in the given CTF container. | |
158 | We pass the type ID of each type to the specified callback function. */ | |
159 | ||
160 | int | |
161 | ctf_type_iter (ctf_file_t *fp, ctf_type_f *func, void *arg) | |
162 | { | |
163 | ctf_id_t id, max = fp->ctf_typemax; | |
164 | int rc, child = (fp->ctf_flags & LCTF_CHILD); | |
165 | ||
166 | for (id = 1; id <= max; id++) | |
167 | { | |
168 | const ctf_type_t *tp = LCTF_INDEX_TO_TYPEPTR (fp, id); | |
169 | if (LCTF_INFO_ISROOT (fp, tp->ctt_info) | |
170 | && (rc = func (LCTF_INDEX_TO_TYPE (fp, id, child), arg)) != 0) | |
171 | return rc; | |
172 | } | |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
0ac62312 NA |
177 | /* Iterate over every type in the given CTF container, user-visible or not. |
178 | We pass the type ID of each type to the specified callback function. */ | |
179 | ||
180 | int | |
181 | ctf_type_iter_all (ctf_file_t *fp, ctf_type_all_f *func, void *arg) | |
182 | { | |
183 | ctf_id_t id, max = fp->ctf_typemax; | |
184 | int rc, child = (fp->ctf_flags & LCTF_CHILD); | |
185 | ||
186 | for (id = 1; id <= max; id++) | |
187 | { | |
188 | const ctf_type_t *tp = LCTF_INDEX_TO_TYPEPTR (fp, id); | |
189 | if ((rc = func (LCTF_INDEX_TO_TYPE (fp, id, child), | |
190 | LCTF_INFO_ISROOT(fp, tp->ctt_info) | |
191 | ? CTF_ADD_ROOT : CTF_ADD_NONROOT, arg) != 0)) | |
192 | return rc; | |
193 | } | |
194 | ||
195 | return 0; | |
196 | } | |
197 | ||
316afdb1 NA |
198 | /* Iterate over every variable in the given CTF container, in arbitrary order. |
199 | We pass the name of each variable to the specified callback function. */ | |
200 | ||
201 | int | |
202 | ctf_variable_iter (ctf_file_t *fp, ctf_variable_f *func, void *arg) | |
203 | { | |
316afdb1 NA |
204 | int rc; |
205 | ||
206 | if ((fp->ctf_flags & LCTF_CHILD) && (fp->ctf_parent == NULL)) | |
207 | return ECTF_NOPARENT; | |
208 | ||
676c3ecb NA |
209 | if (!(fp->ctf_flags & LCTF_RDWR)) |
210 | { | |
211 | unsigned long i; | |
212 | for (i = 0; i < fp->ctf_nvars; i++) | |
213 | if ((rc = func (ctf_strptr (fp, fp->ctf_vars[i].ctv_name), | |
214 | fp->ctf_vars[i].ctv_type, arg)) != 0) | |
215 | return rc; | |
216 | } | |
217 | else | |
218 | { | |
219 | ctf_dvdef_t *dvd; | |
220 | ||
221 | for (dvd = ctf_list_next (&fp->ctf_dvdefs); dvd != NULL; | |
222 | dvd = ctf_list_next (dvd)) | |
223 | { | |
224 | if ((rc = func (dvd->dvd_name, dvd->dvd_type, arg)) != 0) | |
225 | return rc; | |
226 | } | |
227 | } | |
316afdb1 NA |
228 | |
229 | return 0; | |
230 | } | |
231 | ||
232 | /* Follow a given type through the graph for TYPEDEF, VOLATILE, CONST, and | |
233 | RESTRICT nodes until we reach a "base" type node. This is useful when | |
234 | we want to follow a type ID to a node that has members or a size. To guard | |
235 | against infinite loops, we implement simplified cycle detection and check | |
236 | each link against itself, the previous node, and the topmost node. | |
237 | ||
238 | Does not drill down through slices to their contained type. */ | |
239 | ||
240 | ctf_id_t | |
241 | ctf_type_resolve (ctf_file_t *fp, ctf_id_t type) | |
242 | { | |
243 | ctf_id_t prev = type, otype = type; | |
244 | ctf_file_t *ofp = fp; | |
245 | const ctf_type_t *tp; | |
246 | ||
791915db NA |
247 | if (type == 0) |
248 | return (ctf_set_errno (ofp, ECTF_NONREPRESENTABLE)); | |
249 | ||
316afdb1 NA |
250 | while ((tp = ctf_lookup_by_id (&fp, type)) != NULL) |
251 | { | |
252 | switch (LCTF_INFO_KIND (fp, tp->ctt_info)) | |
253 | { | |
254 | case CTF_K_TYPEDEF: | |
255 | case CTF_K_VOLATILE: | |
256 | case CTF_K_CONST: | |
257 | case CTF_K_RESTRICT: | |
258 | if (tp->ctt_type == type || tp->ctt_type == otype | |
259 | || tp->ctt_type == prev) | |
260 | { | |
261 | ctf_dprintf ("type %ld cycle detected\n", otype); | |
262 | return (ctf_set_errno (ofp, ECTF_CORRUPT)); | |
263 | } | |
264 | prev = type; | |
265 | type = tp->ctt_type; | |
266 | break; | |
267 | default: | |
268 | return type; | |
269 | } | |
791915db NA |
270 | if (type == 0) |
271 | return (ctf_set_errno (ofp, ECTF_NONREPRESENTABLE)); | |
316afdb1 NA |
272 | } |
273 | ||
274 | return CTF_ERR; /* errno is set for us. */ | |
275 | } | |
276 | ||
277 | /* Like ctf_type_resolve(), but traverse down through slices to their contained | |
278 | type. */ | |
279 | ||
280 | ctf_id_t | |
281 | ctf_type_resolve_unsliced (ctf_file_t *fp, ctf_id_t type) | |
282 | { | |
283 | const ctf_type_t *tp; | |
284 | ||
285 | if ((type = ctf_type_resolve (fp, type)) == CTF_ERR) | |
286 | return -1; | |
287 | ||
288 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
289 | return CTF_ERR; /* errno is set for us. */ | |
290 | ||
291 | if ((LCTF_INFO_KIND (fp, tp->ctt_info)) == CTF_K_SLICE) | |
292 | return ctf_type_reference (fp, type); | |
293 | return type; | |
294 | } | |
295 | ||
676c3ecb NA |
296 | /* Look up a name in the given name table, in the appropriate hash given the |
297 | kind of the identifier. The name is a raw, undecorated identifier. */ | |
298 | ||
299 | ctf_id_t ctf_lookup_by_rawname (ctf_file_t *fp, int kind, const char *name) | |
300 | { | |
301 | return ctf_lookup_by_rawhash (fp, ctf_name_table (fp, kind), name); | |
302 | } | |
303 | ||
304 | /* Look up a name in the given name table, in the appropriate hash given the | |
305 | readability state of the dictionary. The name is a raw, undecorated | |
306 | identifier. */ | |
307 | ||
308 | ctf_id_t ctf_lookup_by_rawhash (ctf_file_t *fp, ctf_names_t *np, const char *name) | |
309 | { | |
310 | ctf_id_t id; | |
311 | ||
312 | if (fp->ctf_flags & LCTF_RDWR) | |
313 | id = (ctf_id_t) ctf_dynhash_lookup (np->ctn_writable, name); | |
314 | else | |
315 | id = ctf_hash_lookup_type (np->ctn_readonly, fp, name); | |
316 | return id; | |
317 | } | |
318 | ||
316afdb1 NA |
319 | /* Lookup the given type ID and return its name as a new dynamcally-allocated |
320 | string. */ | |
321 | ||
322 | char * | |
323 | ctf_type_aname (ctf_file_t *fp, ctf_id_t type) | |
324 | { | |
325 | ctf_decl_t cd; | |
326 | ctf_decl_node_t *cdp; | |
327 | ctf_decl_prec_t prec, lp, rp; | |
328 | int ptr, arr; | |
329 | uint32_t k; | |
330 | char *buf; | |
331 | ||
332 | if (fp == NULL && type == CTF_ERR) | |
333 | return NULL; /* Simplify caller code by permitting CTF_ERR. */ | |
334 | ||
335 | ctf_decl_init (&cd); | |
336 | ctf_decl_push (&cd, fp, type); | |
337 | ||
338 | if (cd.cd_err != 0) | |
339 | { | |
340 | ctf_decl_fini (&cd); | |
341 | ctf_set_errno (fp, cd.cd_err); | |
342 | return NULL; | |
343 | } | |
344 | ||
345 | /* If the type graph's order conflicts with lexical precedence order | |
346 | for pointers or arrays, then we need to surround the declarations at | |
347 | the corresponding lexical precedence with parentheses. This can | |
348 | result in either a parenthesized pointer (*) as in int (*)() or | |
349 | int (*)[], or in a parenthesized pointer and array as in int (*[])(). */ | |
350 | ||
351 | ptr = cd.cd_order[CTF_PREC_POINTER] > CTF_PREC_POINTER; | |
352 | arr = cd.cd_order[CTF_PREC_ARRAY] > CTF_PREC_ARRAY; | |
353 | ||
354 | rp = arr ? CTF_PREC_ARRAY : ptr ? CTF_PREC_POINTER : -1; | |
355 | lp = ptr ? CTF_PREC_POINTER : arr ? CTF_PREC_ARRAY : -1; | |
356 | ||
357 | k = CTF_K_POINTER; /* Avoid leading whitespace (see below). */ | |
358 | ||
359 | for (prec = CTF_PREC_BASE; prec < CTF_PREC_MAX; prec++) | |
360 | { | |
361 | for (cdp = ctf_list_next (&cd.cd_nodes[prec]); | |
362 | cdp != NULL; cdp = ctf_list_next (cdp)) | |
363 | { | |
364 | ctf_file_t *rfp = fp; | |
365 | const ctf_type_t *tp = ctf_lookup_by_id (&rfp, cdp->cd_type); | |
366 | const char *name = ctf_strptr (rfp, tp->ctt_name); | |
367 | ||
368 | if (k != CTF_K_POINTER && k != CTF_K_ARRAY) | |
369 | ctf_decl_sprintf (&cd, " "); | |
370 | ||
371 | if (lp == prec) | |
372 | { | |
373 | ctf_decl_sprintf (&cd, "("); | |
374 | lp = -1; | |
375 | } | |
376 | ||
377 | switch (cdp->cd_kind) | |
378 | { | |
379 | case CTF_K_INTEGER: | |
380 | case CTF_K_FLOAT: | |
381 | case CTF_K_TYPEDEF: | |
382 | ctf_decl_sprintf (&cd, "%s", name); | |
383 | break; | |
384 | case CTF_K_POINTER: | |
385 | ctf_decl_sprintf (&cd, "*"); | |
386 | break; | |
387 | case CTF_K_ARRAY: | |
388 | ctf_decl_sprintf (&cd, "[%u]", cdp->cd_n); | |
389 | break; | |
390 | case CTF_K_FUNCTION: | |
391 | ctf_decl_sprintf (&cd, "()"); | |
392 | break; | |
393 | case CTF_K_STRUCT: | |
394 | case CTF_K_FORWARD: | |
395 | ctf_decl_sprintf (&cd, "struct %s", name); | |
396 | break; | |
397 | case CTF_K_UNION: | |
398 | ctf_decl_sprintf (&cd, "union %s", name); | |
399 | break; | |
400 | case CTF_K_ENUM: | |
401 | ctf_decl_sprintf (&cd, "enum %s", name); | |
402 | break; | |
403 | case CTF_K_VOLATILE: | |
404 | ctf_decl_sprintf (&cd, "volatile"); | |
405 | break; | |
406 | case CTF_K_CONST: | |
407 | ctf_decl_sprintf (&cd, "const"); | |
408 | break; | |
409 | case CTF_K_RESTRICT: | |
410 | ctf_decl_sprintf (&cd, "restrict"); | |
411 | break; | |
412 | case CTF_K_SLICE: | |
413 | /* No representation: just changes encoding of contained type, | |
414 | which is not in any case printed. Skip it. */ | |
415 | break; | |
416 | } | |
417 | ||
418 | k = cdp->cd_kind; | |
419 | } | |
420 | ||
421 | if (rp == prec) | |
422 | ctf_decl_sprintf (&cd, ")"); | |
423 | } | |
424 | ||
425 | if (cd.cd_enomem) | |
426 | (void) ctf_set_errno (fp, ENOMEM); | |
427 | ||
428 | buf = ctf_decl_buf (&cd); | |
429 | ||
430 | ctf_decl_fini (&cd); | |
431 | return buf; | |
432 | } | |
433 | ||
434 | /* Lookup the given type ID and print a string name for it into buf. Return | |
435 | the actual number of bytes (not including \0) needed to format the name. */ | |
436 | ||
437 | ssize_t | |
438 | ctf_type_lname (ctf_file_t *fp, ctf_id_t type, char *buf, size_t len) | |
439 | { | |
440 | char *str = ctf_type_aname (fp, type); | |
441 | size_t slen = strlen (str); | |
442 | ||
443 | if (str == NULL) | |
444 | return CTF_ERR; /* errno is set for us */ | |
445 | ||
446 | snprintf (buf, len, "%s", str); | |
447 | free (str); | |
448 | ||
449 | if (slen >= len) | |
450 | (void) ctf_set_errno (fp, ECTF_NAMELEN); | |
451 | ||
452 | return slen; | |
453 | } | |
454 | ||
455 | /* Lookup the given type ID and print a string name for it into buf. If buf | |
456 | is too small, return NULL: the ECTF_NAMELEN error is set on 'fp' for us. */ | |
457 | ||
458 | char * | |
459 | ctf_type_name (ctf_file_t *fp, ctf_id_t type, char *buf, size_t len) | |
460 | { | |
461 | ssize_t rv = ctf_type_lname (fp, type, buf, len); | |
462 | return (rv >= 0 && (size_t) rv < len ? buf : NULL); | |
463 | } | |
464 | ||
12a0b67d NA |
465 | /* Lookup the given type ID and return its raw, unadorned, undecorated name as a |
466 | new dynamcally-allocated string. */ | |
467 | ||
468 | char * | |
469 | ctf_type_aname_raw (ctf_file_t *fp, ctf_id_t type) | |
470 | { | |
471 | const ctf_type_t *tp; | |
472 | ||
473 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
474 | return NULL; /* errno is set for us. */ | |
475 | ||
476 | if (ctf_strraw (fp, tp->ctt_name) != NULL) | |
477 | return strdup (ctf_strraw (fp, tp->ctt_name)); | |
478 | ||
479 | return NULL; | |
480 | } | |
481 | ||
316afdb1 NA |
482 | /* Resolve the type down to a base type node, and then return the size |
483 | of the type storage in bytes. */ | |
484 | ||
485 | ssize_t | |
486 | ctf_type_size (ctf_file_t *fp, ctf_id_t type) | |
487 | { | |
488 | const ctf_type_t *tp; | |
489 | ssize_t size; | |
490 | ctf_arinfo_t ar; | |
491 | ||
492 | if ((type = ctf_type_resolve (fp, type)) == CTF_ERR) | |
493 | return -1; /* errno is set for us. */ | |
494 | ||
495 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
496 | return -1; /* errno is set for us. */ | |
497 | ||
498 | switch (LCTF_INFO_KIND (fp, tp->ctt_info)) | |
499 | { | |
500 | case CTF_K_POINTER: | |
501 | return fp->ctf_dmodel->ctd_pointer; | |
502 | ||
503 | case CTF_K_FUNCTION: | |
504 | return 0; /* Function size is only known by symtab. */ | |
505 | ||
506 | case CTF_K_ENUM: | |
507 | return fp->ctf_dmodel->ctd_int; | |
508 | ||
509 | case CTF_K_ARRAY: | |
510 | /* ctf_add_array() does not directly encode the element size, but | |
511 | requires the user to multiply to determine the element size. | |
512 | ||
513 | If ctf_get_ctt_size() returns nonzero, then use the recorded | |
514 | size instead. */ | |
515 | ||
516 | if ((size = ctf_get_ctt_size (fp, tp, NULL, NULL)) > 0) | |
517 | return size; | |
518 | ||
a0486bac JM |
519 | if (ctf_array_info (fp, type, &ar) < 0 |
520 | || (size = ctf_type_size (fp, ar.ctr_contents)) < 0) | |
316afdb1 NA |
521 | return -1; /* errno is set for us. */ |
522 | ||
523 | return size * ar.ctr_nelems; | |
524 | ||
525 | default: /* including slices of enums, etc */ | |
526 | return (ctf_get_ctt_size (fp, tp, NULL, NULL)); | |
527 | } | |
528 | } | |
529 | ||
530 | /* Resolve the type down to a base type node, and then return the alignment | |
531 | needed for the type storage in bytes. | |
532 | ||
533 | XXX may need arch-dependent attention. */ | |
534 | ||
535 | ssize_t | |
536 | ctf_type_align (ctf_file_t *fp, ctf_id_t type) | |
537 | { | |
538 | const ctf_type_t *tp; | |
539 | ctf_file_t *ofp = fp; | |
540 | int kind; | |
541 | ||
542 | if ((type = ctf_type_resolve (fp, type)) == CTF_ERR) | |
543 | return -1; /* errno is set for us. */ | |
544 | ||
545 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
546 | return -1; /* errno is set for us. */ | |
547 | ||
548 | kind = LCTF_INFO_KIND (fp, tp->ctt_info); | |
549 | switch (kind) | |
550 | { | |
551 | case CTF_K_POINTER: | |
552 | case CTF_K_FUNCTION: | |
553 | return fp->ctf_dmodel->ctd_pointer; | |
554 | ||
555 | case CTF_K_ARRAY: | |
556 | { | |
557 | ctf_arinfo_t r; | |
a0486bac | 558 | if (ctf_array_info (fp, type, &r) < 0) |
316afdb1 NA |
559 | return -1; /* errno is set for us. */ |
560 | return (ctf_type_align (fp, r.ctr_contents)); | |
561 | } | |
562 | ||
563 | case CTF_K_STRUCT: | |
564 | case CTF_K_UNION: | |
565 | { | |
566 | size_t align = 0; | |
567 | ctf_dtdef_t *dtd; | |
568 | ||
569 | if ((dtd = ctf_dynamic_type (ofp, type)) == NULL) | |
570 | { | |
571 | uint32_t n = LCTF_INFO_VLEN (fp, tp->ctt_info); | |
572 | ssize_t size, increment; | |
573 | const void *vmp; | |
574 | ||
575 | (void) ctf_get_ctt_size (fp, tp, &size, &increment); | |
576 | vmp = (unsigned char *) tp + increment; | |
577 | ||
578 | if (kind == CTF_K_STRUCT) | |
579 | n = MIN (n, 1); /* Only use first member for structs. */ | |
580 | ||
581 | if (size < CTF_LSTRUCT_THRESH) | |
582 | { | |
583 | const ctf_member_t *mp = vmp; | |
584 | for (; n != 0; n--, mp++) | |
585 | { | |
586 | ssize_t am = ctf_type_align (fp, mp->ctm_type); | |
a0486bac | 587 | align = MAX (align, (size_t) am); |
316afdb1 NA |
588 | } |
589 | } | |
590 | else | |
591 | { | |
592 | const ctf_lmember_t *lmp = vmp; | |
593 | for (; n != 0; n--, lmp++) | |
594 | { | |
595 | ssize_t am = ctf_type_align (fp, lmp->ctlm_type); | |
a0486bac | 596 | align = MAX (align, (size_t) am); |
316afdb1 NA |
597 | } |
598 | } | |
599 | } | |
600 | else | |
601 | { | |
602 | ctf_dmdef_t *dmd; | |
603 | ||
604 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
605 | dmd != NULL; dmd = ctf_list_next (dmd)) | |
606 | { | |
607 | ssize_t am = ctf_type_align (fp, dmd->dmd_type); | |
a0486bac | 608 | align = MAX (align, (size_t) am); |
316afdb1 NA |
609 | if (kind == CTF_K_STRUCT) |
610 | break; | |
611 | } | |
612 | } | |
613 | ||
614 | return align; | |
615 | } | |
616 | ||
617 | case CTF_K_ENUM: | |
618 | return fp->ctf_dmodel->ctd_int; | |
619 | ||
620 | default: /* including slices of enums, etc */ | |
621 | return (ctf_get_ctt_size (fp, tp, NULL, NULL)); | |
622 | } | |
623 | } | |
624 | ||
625 | /* Return the kind (CTF_K_* constant) for the specified type ID. */ | |
626 | ||
627 | int | |
628 | ctf_type_kind_unsliced (ctf_file_t *fp, ctf_id_t type) | |
629 | { | |
630 | const ctf_type_t *tp; | |
631 | ||
632 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
a0486bac | 633 | return -1; /* errno is set for us. */ |
316afdb1 NA |
634 | |
635 | return (LCTF_INFO_KIND (fp, tp->ctt_info)); | |
636 | } | |
637 | ||
638 | /* Return the kind (CTF_K_* constant) for the specified type ID. | |
639 | Slices are considered to be of the same kind as the type sliced. */ | |
640 | ||
641 | int | |
642 | ctf_type_kind (ctf_file_t *fp, ctf_id_t type) | |
643 | { | |
644 | int kind; | |
645 | ||
a0486bac JM |
646 | if ((kind = ctf_type_kind_unsliced (fp, type)) < 0) |
647 | return -1; | |
316afdb1 NA |
648 | |
649 | if (kind == CTF_K_SLICE) | |
650 | { | |
651 | if ((type = ctf_type_reference (fp, type)) == CTF_ERR) | |
a0486bac | 652 | return -1; |
316afdb1 NA |
653 | kind = ctf_type_kind_unsliced (fp, type); |
654 | } | |
655 | ||
656 | return kind; | |
657 | } | |
658 | ||
659 | /* If the type is one that directly references another type (such as POINTER), | |
660 | then return the ID of the type to which it refers. */ | |
661 | ||
662 | ctf_id_t | |
663 | ctf_type_reference (ctf_file_t *fp, ctf_id_t type) | |
664 | { | |
665 | ctf_file_t *ofp = fp; | |
666 | const ctf_type_t *tp; | |
667 | ||
668 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
669 | return CTF_ERR; /* errno is set for us. */ | |
670 | ||
671 | switch (LCTF_INFO_KIND (fp, tp->ctt_info)) | |
672 | { | |
673 | case CTF_K_POINTER: | |
674 | case CTF_K_TYPEDEF: | |
675 | case CTF_K_VOLATILE: | |
676 | case CTF_K_CONST: | |
677 | case CTF_K_RESTRICT: | |
678 | return tp->ctt_type; | |
679 | /* Slices store their type in an unusual place. */ | |
680 | case CTF_K_SLICE: | |
681 | { | |
682 | const ctf_slice_t *sp; | |
683 | ssize_t increment; | |
684 | (void) ctf_get_ctt_size (fp, tp, NULL, &increment); | |
685 | sp = (const ctf_slice_t *) ((uintptr_t) tp + increment); | |
686 | return sp->cts_type; | |
687 | } | |
688 | default: | |
689 | return (ctf_set_errno (ofp, ECTF_NOTREF)); | |
690 | } | |
691 | } | |
692 | ||
693 | /* Find a pointer to type by looking in fp->ctf_ptrtab. If we can't find a | |
694 | pointer to the given type, see if we can compute a pointer to the type | |
695 | resulting from resolving the type down to its base type and use that | |
696 | instead. This helps with cases where the CTF data includes "struct foo *" | |
697 | but not "foo_t *" and the user accesses "foo_t *" in the debugger. | |
698 | ||
699 | XXX what about parent containers? */ | |
700 | ||
701 | ctf_id_t | |
702 | ctf_type_pointer (ctf_file_t *fp, ctf_id_t type) | |
703 | { | |
704 | ctf_file_t *ofp = fp; | |
705 | ctf_id_t ntype; | |
706 | ||
707 | if (ctf_lookup_by_id (&fp, type) == NULL) | |
708 | return CTF_ERR; /* errno is set for us. */ | |
709 | ||
710 | if ((ntype = fp->ctf_ptrtab[LCTF_TYPE_TO_INDEX (fp, type)]) != 0) | |
711 | return (LCTF_INDEX_TO_TYPE (fp, ntype, (fp->ctf_flags & LCTF_CHILD))); | |
712 | ||
713 | if ((type = ctf_type_resolve (fp, type)) == CTF_ERR) | |
714 | return (ctf_set_errno (ofp, ECTF_NOTYPE)); | |
715 | ||
716 | if (ctf_lookup_by_id (&fp, type) == NULL) | |
717 | return (ctf_set_errno (ofp, ECTF_NOTYPE)); | |
718 | ||
719 | if ((ntype = fp->ctf_ptrtab[LCTF_TYPE_TO_INDEX (fp, type)]) != 0) | |
720 | return (LCTF_INDEX_TO_TYPE (fp, ntype, (fp->ctf_flags & LCTF_CHILD))); | |
721 | ||
722 | return (ctf_set_errno (ofp, ECTF_NOTYPE)); | |
723 | } | |
724 | ||
725 | /* Return the encoding for the specified INTEGER or FLOAT. */ | |
726 | ||
727 | int | |
728 | ctf_type_encoding (ctf_file_t *fp, ctf_id_t type, ctf_encoding_t *ep) | |
729 | { | |
730 | ctf_file_t *ofp = fp; | |
731 | ctf_dtdef_t *dtd; | |
732 | const ctf_type_t *tp; | |
733 | ssize_t increment; | |
734 | uint32_t data; | |
735 | ||
736 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
a0486bac | 737 | return -1; /* errno is set for us. */ |
316afdb1 NA |
738 | |
739 | if ((dtd = ctf_dynamic_type (ofp, type)) != NULL) | |
740 | { | |
741 | *ep = dtd->dtd_u.dtu_enc; | |
742 | return 0; | |
743 | } | |
744 | ||
745 | (void) ctf_get_ctt_size (fp, tp, NULL, &increment); | |
746 | ||
747 | switch (LCTF_INFO_KIND (fp, tp->ctt_info)) | |
748 | { | |
749 | case CTF_K_INTEGER: | |
750 | data = *(const uint32_t *) ((uintptr_t) tp + increment); | |
751 | ep->cte_format = CTF_INT_ENCODING (data); | |
752 | ep->cte_offset = CTF_INT_OFFSET (data); | |
753 | ep->cte_bits = CTF_INT_BITS (data); | |
754 | break; | |
755 | case CTF_K_FLOAT: | |
756 | data = *(const uint32_t *) ((uintptr_t) tp + increment); | |
757 | ep->cte_format = CTF_FP_ENCODING (data); | |
758 | ep->cte_offset = CTF_FP_OFFSET (data); | |
759 | ep->cte_bits = CTF_FP_BITS (data); | |
760 | break; | |
761 | case CTF_K_SLICE: | |
762 | { | |
763 | const ctf_slice_t *slice; | |
764 | ctf_encoding_t underlying_en; | |
765 | ||
766 | slice = (ctf_slice_t *) ((uintptr_t) tp + increment); | |
767 | data = ctf_type_encoding (fp, slice->cts_type, &underlying_en); | |
768 | ||
769 | ep->cte_format = underlying_en.cte_format; | |
770 | ep->cte_offset = slice->cts_offset; | |
771 | ep->cte_bits = slice->cts_bits; | |
772 | break; | |
773 | } | |
774 | default: | |
775 | return (ctf_set_errno (ofp, ECTF_NOTINTFP)); | |
776 | } | |
777 | ||
778 | return 0; | |
779 | } | |
780 | ||
781 | int | |
782 | ctf_type_cmp (ctf_file_t *lfp, ctf_id_t ltype, ctf_file_t *rfp, | |
783 | ctf_id_t rtype) | |
784 | { | |
785 | int rval; | |
786 | ||
787 | if (ltype < rtype) | |
788 | rval = -1; | |
789 | else if (ltype > rtype) | |
790 | rval = 1; | |
791 | else | |
792 | rval = 0; | |
793 | ||
794 | if (lfp == rfp) | |
795 | return rval; | |
796 | ||
797 | if (LCTF_TYPE_ISPARENT (lfp, ltype) && lfp->ctf_parent != NULL) | |
798 | lfp = lfp->ctf_parent; | |
799 | ||
800 | if (LCTF_TYPE_ISPARENT (rfp, rtype) && rfp->ctf_parent != NULL) | |
801 | rfp = rfp->ctf_parent; | |
802 | ||
803 | if (lfp < rfp) | |
804 | return -1; | |
805 | ||
806 | if (lfp > rfp) | |
807 | return 1; | |
808 | ||
809 | return rval; | |
810 | } | |
811 | ||
812 | /* Return a boolean value indicating if two types are compatible. This function | |
813 | returns true if the two types are the same, or if they (or their ultimate | |
814 | base type) have the same encoding properties, or (for structs / unions / | |
815 | enums / forward declarations) if they have the same name and (for structs / | |
816 | unions) member count. */ | |
817 | ||
818 | int | |
819 | ctf_type_compat (ctf_file_t *lfp, ctf_id_t ltype, | |
820 | ctf_file_t *rfp, ctf_id_t rtype) | |
821 | { | |
822 | const ctf_type_t *ltp, *rtp; | |
823 | ctf_encoding_t le, re; | |
824 | ctf_arinfo_t la, ra; | |
825 | uint32_t lkind, rkind; | |
826 | int same_names = 0; | |
827 | ||
828 | if (ctf_type_cmp (lfp, ltype, rfp, rtype) == 0) | |
829 | return 1; | |
830 | ||
831 | ltype = ctf_type_resolve (lfp, ltype); | |
832 | lkind = ctf_type_kind (lfp, ltype); | |
833 | ||
834 | rtype = ctf_type_resolve (rfp, rtype); | |
835 | rkind = ctf_type_kind (rfp, rtype); | |
836 | ||
837 | ltp = ctf_lookup_by_id (&lfp, ltype); | |
838 | rtp = ctf_lookup_by_id (&rfp, rtype); | |
839 | ||
840 | if (ltp != NULL && rtp != NULL) | |
841 | same_names = (strcmp (ctf_strptr (lfp, ltp->ctt_name), | |
842 | ctf_strptr (rfp, rtp->ctt_name)) == 0); | |
843 | ||
844 | if (((lkind == CTF_K_ENUM) && (rkind == CTF_K_INTEGER)) || | |
845 | ((rkind == CTF_K_ENUM) && (lkind == CTF_K_INTEGER))) | |
846 | return 1; | |
847 | ||
848 | if (lkind != rkind) | |
849 | return 0; | |
850 | ||
851 | switch (lkind) | |
852 | { | |
853 | case CTF_K_INTEGER: | |
854 | case CTF_K_FLOAT: | |
855 | memset (&le, 0, sizeof (le)); | |
856 | memset (&re, 0, sizeof (re)); | |
857 | return (ctf_type_encoding (lfp, ltype, &le) == 0 | |
858 | && ctf_type_encoding (rfp, rtype, &re) == 0 | |
859 | && memcmp (&le, &re, sizeof (ctf_encoding_t)) == 0); | |
860 | case CTF_K_POINTER: | |
861 | return (ctf_type_compat (lfp, ctf_type_reference (lfp, ltype), | |
862 | rfp, ctf_type_reference (rfp, rtype))); | |
863 | case CTF_K_ARRAY: | |
864 | return (ctf_array_info (lfp, ltype, &la) == 0 | |
865 | && ctf_array_info (rfp, rtype, &ra) == 0 | |
866 | && la.ctr_nelems == ra.ctr_nelems | |
867 | && ctf_type_compat (lfp, la.ctr_contents, rfp, ra.ctr_contents) | |
868 | && ctf_type_compat (lfp, la.ctr_index, rfp, ra.ctr_index)); | |
869 | case CTF_K_STRUCT: | |
870 | case CTF_K_UNION: | |
871 | return (same_names && (ctf_type_size (lfp, ltype) | |
872 | == ctf_type_size (rfp, rtype))); | |
873 | case CTF_K_ENUM: | |
874 | { | |
875 | int lencoded, rencoded; | |
876 | lencoded = ctf_type_encoding (lfp, ltype, &le); | |
877 | rencoded = ctf_type_encoding (rfp, rtype, &re); | |
878 | ||
879 | if ((lencoded != rencoded) || | |
880 | ((lencoded == 0) && memcmp (&le, &re, sizeof (ctf_encoding_t)) != 0)) | |
881 | return 0; | |
882 | } | |
883 | /* FALLTHRU */ | |
884 | case CTF_K_FORWARD: | |
885 | return same_names; /* No other checks required for these type kinds. */ | |
886 | default: | |
887 | return 0; /* Should not get here since we did a resolve. */ | |
888 | } | |
889 | } | |
890 | ||
891 | /* Return the type and offset for a given member of a STRUCT or UNION. */ | |
892 | ||
893 | int | |
894 | ctf_member_info (ctf_file_t *fp, ctf_id_t type, const char *name, | |
895 | ctf_membinfo_t *mip) | |
896 | { | |
897 | ctf_file_t *ofp = fp; | |
898 | const ctf_type_t *tp; | |
676c3ecb | 899 | ctf_dtdef_t *dtd; |
316afdb1 NA |
900 | ssize_t size, increment; |
901 | uint32_t kind, n; | |
902 | ||
903 | if ((type = ctf_type_resolve (fp, type)) == CTF_ERR) | |
a0486bac | 904 | return -1; /* errno is set for us. */ |
316afdb1 NA |
905 | |
906 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
a0486bac | 907 | return -1; /* errno is set for us. */ |
316afdb1 NA |
908 | |
909 | (void) ctf_get_ctt_size (fp, tp, &size, &increment); | |
910 | kind = LCTF_INFO_KIND (fp, tp->ctt_info); | |
911 | ||
912 | if (kind != CTF_K_STRUCT && kind != CTF_K_UNION) | |
913 | return (ctf_set_errno (ofp, ECTF_NOTSOU)); | |
914 | ||
676c3ecb | 915 | if ((dtd = ctf_dynamic_type (fp, type)) == NULL) |
316afdb1 | 916 | { |
676c3ecb NA |
917 | if (size < CTF_LSTRUCT_THRESH) |
918 | { | |
919 | const ctf_member_t *mp = (const ctf_member_t *) ((uintptr_t) tp + | |
920 | increment); | |
316afdb1 | 921 | |
676c3ecb NA |
922 | for (n = LCTF_INFO_VLEN (fp, tp->ctt_info); n != 0; n--, mp++) |
923 | { | |
924 | if (strcmp (ctf_strptr (fp, mp->ctm_name), name) == 0) | |
925 | { | |
926 | mip->ctm_type = mp->ctm_type; | |
927 | mip->ctm_offset = mp->ctm_offset; | |
928 | return 0; | |
929 | } | |
930 | } | |
931 | } | |
932 | else | |
316afdb1 | 933 | { |
676c3ecb NA |
934 | const ctf_lmember_t *lmp = (const ctf_lmember_t *) ((uintptr_t) tp + |
935 | increment); | |
936 | ||
937 | for (n = LCTF_INFO_VLEN (fp, tp->ctt_info); n != 0; n--, lmp++) | |
316afdb1 | 938 | { |
676c3ecb NA |
939 | if (strcmp (ctf_strptr (fp, lmp->ctlm_name), name) == 0) |
940 | { | |
941 | mip->ctm_type = lmp->ctlm_type; | |
942 | mip->ctm_offset = (unsigned long) CTF_LMEM_OFFSET (lmp); | |
943 | return 0; | |
944 | } | |
316afdb1 NA |
945 | } |
946 | } | |
947 | } | |
948 | else | |
949 | { | |
676c3ecb | 950 | ctf_dmdef_t *dmd; |
316afdb1 | 951 | |
676c3ecb NA |
952 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); |
953 | dmd != NULL; dmd = ctf_list_next (dmd)) | |
316afdb1 | 954 | { |
676c3ecb | 955 | if (strcmp (dmd->dmd_name, name) == 0) |
316afdb1 | 956 | { |
676c3ecb NA |
957 | mip->ctm_type = dmd->dmd_type; |
958 | mip->ctm_offset = dmd->dmd_offset; | |
316afdb1 NA |
959 | return 0; |
960 | } | |
961 | } | |
962 | } | |
963 | ||
964 | return (ctf_set_errno (ofp, ECTF_NOMEMBNAM)); | |
965 | } | |
966 | ||
967 | /* Return the array type, index, and size information for the specified ARRAY. */ | |
968 | ||
969 | int | |
970 | ctf_array_info (ctf_file_t *fp, ctf_id_t type, ctf_arinfo_t *arp) | |
971 | { | |
972 | ctf_file_t *ofp = fp; | |
973 | const ctf_type_t *tp; | |
974 | const ctf_array_t *ap; | |
975 | const ctf_dtdef_t *dtd; | |
976 | ssize_t increment; | |
977 | ||
978 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
a0486bac | 979 | return -1; /* errno is set for us. */ |
316afdb1 NA |
980 | |
981 | if (LCTF_INFO_KIND (fp, tp->ctt_info) != CTF_K_ARRAY) | |
982 | return (ctf_set_errno (ofp, ECTF_NOTARRAY)); | |
983 | ||
984 | if ((dtd = ctf_dynamic_type (ofp, type)) != NULL) | |
985 | { | |
986 | *arp = dtd->dtd_u.dtu_arr; | |
987 | return 0; | |
988 | } | |
989 | ||
990 | (void) ctf_get_ctt_size (fp, tp, NULL, &increment); | |
991 | ||
992 | ap = (const ctf_array_t *) ((uintptr_t) tp + increment); | |
993 | arp->ctr_contents = ap->cta_contents; | |
994 | arp->ctr_index = ap->cta_index; | |
995 | arp->ctr_nelems = ap->cta_nelems; | |
996 | ||
997 | return 0; | |
998 | } | |
999 | ||
1000 | /* Convert the specified value to the corresponding enum tag name, if a | |
1001 | matching name can be found. Otherwise NULL is returned. */ | |
1002 | ||
1003 | const char * | |
1004 | ctf_enum_name (ctf_file_t *fp, ctf_id_t type, int value) | |
1005 | { | |
1006 | ctf_file_t *ofp = fp; | |
1007 | const ctf_type_t *tp; | |
1008 | const ctf_enum_t *ep; | |
676c3ecb | 1009 | const ctf_dtdef_t *dtd; |
316afdb1 NA |
1010 | ssize_t increment; |
1011 | uint32_t n; | |
1012 | ||
1013 | if ((type = ctf_type_resolve_unsliced (fp, type)) == CTF_ERR) | |
1014 | return NULL; /* errno is set for us. */ | |
1015 | ||
1016 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
1017 | return NULL; /* errno is set for us. */ | |
1018 | ||
1019 | if (LCTF_INFO_KIND (fp, tp->ctt_info) != CTF_K_ENUM) | |
1020 | { | |
1021 | (void) ctf_set_errno (ofp, ECTF_NOTENUM); | |
1022 | return NULL; | |
1023 | } | |
1024 | ||
1025 | (void) ctf_get_ctt_size (fp, tp, NULL, &increment); | |
1026 | ||
676c3ecb NA |
1027 | if ((dtd = ctf_dynamic_type (ofp, type)) == NULL) |
1028 | { | |
1029 | ep = (const ctf_enum_t *) ((uintptr_t) tp + increment); | |
316afdb1 | 1030 | |
676c3ecb NA |
1031 | for (n = LCTF_INFO_VLEN (fp, tp->ctt_info); n != 0; n--, ep++) |
1032 | { | |
1033 | if (ep->cte_value == value) | |
1034 | return (ctf_strptr (fp, ep->cte_name)); | |
1035 | } | |
1036 | } | |
1037 | else | |
316afdb1 | 1038 | { |
676c3ecb NA |
1039 | ctf_dmdef_t *dmd; |
1040 | ||
1041 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
1042 | dmd != NULL; dmd = ctf_list_next (dmd)) | |
1043 | { | |
1044 | if (dmd->dmd_value == value) | |
1045 | return dmd->dmd_name; | |
1046 | } | |
316afdb1 NA |
1047 | } |
1048 | ||
1049 | (void) ctf_set_errno (ofp, ECTF_NOENUMNAM); | |
1050 | return NULL; | |
1051 | } | |
1052 | ||
1053 | /* Convert the specified enum tag name to the corresponding value, if a | |
1054 | matching name can be found. Otherwise CTF_ERR is returned. */ | |
1055 | ||
1056 | int | |
1057 | ctf_enum_value (ctf_file_t * fp, ctf_id_t type, const char *name, int *valp) | |
1058 | { | |
1059 | ctf_file_t *ofp = fp; | |
1060 | const ctf_type_t *tp; | |
1061 | const ctf_enum_t *ep; | |
676c3ecb | 1062 | const ctf_dtdef_t *dtd; |
316afdb1 NA |
1063 | ssize_t increment; |
1064 | uint32_t n; | |
1065 | ||
1066 | if ((type = ctf_type_resolve_unsliced (fp, type)) == CTF_ERR) | |
a0486bac | 1067 | return -1; /* errno is set for us. */ |
316afdb1 NA |
1068 | |
1069 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
a0486bac | 1070 | return -1; /* errno is set for us. */ |
316afdb1 NA |
1071 | |
1072 | if (LCTF_INFO_KIND (fp, tp->ctt_info) != CTF_K_ENUM) | |
1073 | { | |
1074 | (void) ctf_set_errno (ofp, ECTF_NOTENUM); | |
a0486bac | 1075 | return -1; |
316afdb1 NA |
1076 | } |
1077 | ||
1078 | (void) ctf_get_ctt_size (fp, tp, NULL, &increment); | |
1079 | ||
1080 | ep = (const ctf_enum_t *) ((uintptr_t) tp + increment); | |
1081 | ||
676c3ecb | 1082 | if ((dtd = ctf_dynamic_type (ofp, type)) == NULL) |
316afdb1 | 1083 | { |
676c3ecb | 1084 | for (n = LCTF_INFO_VLEN (fp, tp->ctt_info); n != 0; n--, ep++) |
316afdb1 | 1085 | { |
676c3ecb NA |
1086 | if (strcmp (ctf_strptr (fp, ep->cte_name), name) == 0) |
1087 | { | |
1088 | if (valp != NULL) | |
1089 | *valp = ep->cte_value; | |
1090 | return 0; | |
1091 | } | |
1092 | } | |
1093 | } | |
1094 | else | |
1095 | { | |
1096 | ctf_dmdef_t *dmd; | |
1097 | ||
1098 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
1099 | dmd != NULL; dmd = ctf_list_next (dmd)) | |
1100 | { | |
1101 | if (strcmp (dmd->dmd_name, name) == 0) | |
1102 | { | |
1103 | if (valp != NULL) | |
1104 | *valp = dmd->dmd_value; | |
1105 | return 0; | |
1106 | } | |
316afdb1 NA |
1107 | } |
1108 | } | |
1109 | ||
1110 | (void) ctf_set_errno (ofp, ECTF_NOENUMNAM); | |
a0486bac | 1111 | return -1; |
316afdb1 NA |
1112 | } |
1113 | ||
12a0b67d NA |
1114 | /* Given a type ID relating to a function type, return info on return types and |
1115 | arg counts for that function. */ | |
1116 | ||
1117 | int | |
1118 | ctf_func_type_info (ctf_file_t *fp, ctf_id_t type, ctf_funcinfo_t *fip) | |
1119 | { | |
1120 | const ctf_type_t *tp; | |
1121 | uint32_t kind; | |
1122 | const uint32_t *args; | |
676c3ecb | 1123 | const ctf_dtdef_t *dtd; |
12a0b67d NA |
1124 | ssize_t size, increment; |
1125 | ||
1126 | if ((type = ctf_type_resolve (fp, type)) == CTF_ERR) | |
1127 | return -1; /* errno is set for us. */ | |
1128 | ||
1129 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
1130 | return -1; /* errno is set for us. */ | |
1131 | ||
1132 | (void) ctf_get_ctt_size (fp, tp, &size, &increment); | |
1133 | kind = LCTF_INFO_KIND (fp, tp->ctt_info); | |
1134 | ||
1135 | if (kind != CTF_K_FUNCTION) | |
1136 | return (ctf_set_errno (fp, ECTF_NOTFUNC)); | |
1137 | ||
1138 | fip->ctc_return = tp->ctt_type; | |
12a0b67d | 1139 | fip->ctc_flags = 0; |
676c3ecb | 1140 | fip->ctc_argc = LCTF_INFO_VLEN (fp, tp->ctt_info); |
12a0b67d | 1141 | |
676c3ecb NA |
1142 | if ((dtd = ctf_dynamic_type (fp, type)) == NULL) |
1143 | args = (uint32_t *) ((uintptr_t) tp + increment); | |
1144 | else | |
1145 | args = (uint32_t *) dtd->dtd_u.dtu_argv; | |
12a0b67d NA |
1146 | |
1147 | if (fip->ctc_argc != 0 && args[fip->ctc_argc - 1] == 0) | |
1148 | { | |
1149 | fip->ctc_flags |= CTF_FUNC_VARARG; | |
1150 | fip->ctc_argc--; | |
1151 | } | |
1152 | ||
1153 | return 0; | |
1154 | } | |
1155 | ||
1156 | /* Given a type ID relating to a function type,, return the arguments for the | |
1157 | function. */ | |
1158 | ||
1159 | int | |
1160 | ctf_func_type_args (ctf_file_t *fp, ctf_id_t type, uint32_t argc, ctf_id_t *argv) | |
1161 | { | |
1162 | const ctf_type_t *tp; | |
1163 | const uint32_t *args; | |
676c3ecb | 1164 | const ctf_dtdef_t *dtd; |
12a0b67d NA |
1165 | ssize_t size, increment; |
1166 | ctf_funcinfo_t f; | |
1167 | ||
1168 | if (ctf_func_type_info (fp, type, &f) < 0) | |
1169 | return -1; /* errno is set for us. */ | |
1170 | ||
1171 | if ((type = ctf_type_resolve (fp, type)) == CTF_ERR) | |
1172 | return -1; /* errno is set for us. */ | |
1173 | ||
1174 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
1175 | return -1; /* errno is set for us. */ | |
1176 | ||
1177 | (void) ctf_get_ctt_size (fp, tp, &size, &increment); | |
1178 | ||
676c3ecb NA |
1179 | if ((dtd = ctf_dynamic_type (fp, type)) == NULL) |
1180 | args = (uint32_t *) ((uintptr_t) tp + increment); | |
1181 | else | |
1182 | args = (uint32_t *) dtd->dtd_u.dtu_argv; | |
12a0b67d NA |
1183 | |
1184 | for (argc = MIN (argc, f.ctc_argc); argc != 0; argc--) | |
1185 | *argv++ = *args++; | |
1186 | ||
1187 | return 0; | |
1188 | } | |
1189 | ||
316afdb1 NA |
1190 | /* Recursively visit the members of any type. This function is used as the |
1191 | engine for ctf_type_visit, below. We resolve the input type, recursively | |
1192 | invoke ourself for each type member if the type is a struct or union, and | |
1193 | then invoke the callback function on the current type. If any callback | |
1194 | returns non-zero, we abort and percolate the error code back up to the top. */ | |
1195 | ||
1196 | static int | |
1197 | ctf_type_rvisit (ctf_file_t *fp, ctf_id_t type, ctf_visit_f *func, | |
1198 | void *arg, const char *name, unsigned long offset, int depth) | |
1199 | { | |
1200 | ctf_id_t otype = type; | |
1201 | const ctf_type_t *tp; | |
676c3ecb | 1202 | const ctf_dtdef_t *dtd; |
316afdb1 NA |
1203 | ssize_t size, increment; |
1204 | uint32_t kind, n; | |
1205 | int rc; | |
1206 | ||
1207 | if ((type = ctf_type_resolve (fp, type)) == CTF_ERR) | |
a0486bac | 1208 | return -1; /* errno is set for us. */ |
316afdb1 NA |
1209 | |
1210 | if ((tp = ctf_lookup_by_id (&fp, type)) == NULL) | |
a0486bac | 1211 | return -1; /* errno is set for us. */ |
316afdb1 NA |
1212 | |
1213 | if ((rc = func (name, otype, offset, depth, arg)) != 0) | |
1214 | return rc; | |
1215 | ||
1216 | kind = LCTF_INFO_KIND (fp, tp->ctt_info); | |
1217 | ||
1218 | if (kind != CTF_K_STRUCT && kind != CTF_K_UNION) | |
1219 | return 0; | |
1220 | ||
1221 | (void) ctf_get_ctt_size (fp, tp, &size, &increment); | |
1222 | ||
676c3ecb | 1223 | if ((dtd = ctf_dynamic_type (fp, type)) == NULL) |
316afdb1 | 1224 | { |
676c3ecb | 1225 | if (size < CTF_LSTRUCT_THRESH) |
316afdb1 | 1226 | { |
676c3ecb NA |
1227 | const ctf_member_t *mp = (const ctf_member_t *) ((uintptr_t) tp + |
1228 | increment); | |
1229 | ||
1230 | for (n = LCTF_INFO_VLEN (fp, tp->ctt_info); n != 0; n--, mp++) | |
1231 | { | |
1232 | if ((rc = ctf_type_rvisit (fp, mp->ctm_type, | |
1233 | func, arg, ctf_strptr (fp, | |
1234 | mp->ctm_name), | |
1235 | offset + mp->ctm_offset, | |
1236 | depth + 1)) != 0) | |
1237 | return rc; | |
1238 | } | |
316afdb1 | 1239 | } |
676c3ecb NA |
1240 | else |
1241 | { | |
1242 | const ctf_lmember_t *lmp = (const ctf_lmember_t *) ((uintptr_t) tp + | |
1243 | increment); | |
316afdb1 | 1244 | |
676c3ecb NA |
1245 | for (n = LCTF_INFO_VLEN (fp, tp->ctt_info); n != 0; n--, lmp++) |
1246 | { | |
1247 | if ((rc = ctf_type_rvisit (fp, lmp->ctlm_type, | |
1248 | func, arg, ctf_strptr (fp, | |
1249 | lmp->ctlm_name), | |
1250 | offset + (unsigned long) CTF_LMEM_OFFSET (lmp), | |
1251 | depth + 1)) != 0) | |
1252 | return rc; | |
1253 | } | |
1254 | } | |
316afdb1 NA |
1255 | } |
1256 | else | |
1257 | { | |
676c3ecb | 1258 | ctf_dmdef_t *dmd; |
316afdb1 | 1259 | |
676c3ecb NA |
1260 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); |
1261 | dmd != NULL; dmd = ctf_list_next (dmd)) | |
316afdb1 | 1262 | { |
676c3ecb NA |
1263 | if ((rc = ctf_type_rvisit (fp, dmd->dmd_type, func, arg, |
1264 | dmd->dmd_name, dmd->dmd_offset, | |
316afdb1 NA |
1265 | depth + 1)) != 0) |
1266 | return rc; | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | return 0; | |
1271 | } | |
1272 | ||
1273 | /* Recursively visit the members of any type. We pass the name, member | |
1274 | type, and offset of each member to the specified callback function. */ | |
1275 | int | |
1276 | ctf_type_visit (ctf_file_t *fp, ctf_id_t type, ctf_visit_f *func, void *arg) | |
1277 | { | |
1278 | return (ctf_type_rvisit (fp, type, func, arg, "", 0, 0)); | |
1279 | } |