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bf4c3185 | 1 | /* CTF dict creation. |
fd67aa11 | 2 | Copyright (C) 2019-2024 Free Software Foundation, Inc. |
47d546f4 NA |
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 <sys/param.h> | |
47d546f4 | 22 | #include <string.h> |
c1401ecc | 23 | #include <unistd.h> |
1136c379 | 24 | |
555adca2 EZ |
25 | #ifndef EOVERFLOW |
26 | #define EOVERFLOW ERANGE | |
27 | #endif | |
28 | ||
a0486bac JM |
29 | #ifndef roundup |
30 | #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) | |
31 | #endif | |
32 | ||
08c428af NA |
33 | /* The initial size of a dynamic type's vlen in members. Arbitrary: the bigger |
34 | this is, the less allocation needs to be done for small structure | |
35 | initialization, and the more memory is wasted for small structures during CTF | |
36 | construction. No effect on generated CTF or ctf_open()ed CTF. */ | |
37 | #define INITIAL_VLEN 16 | |
38 | ||
676c3ecb NA |
39 | /* Make sure the ptrtab has enough space for at least one more type. |
40 | ||
41 | We start with 4KiB of ptrtab, enough for a thousand types, then grow it 25% | |
42 | at a time. */ | |
43 | ||
44 | static int | |
139633c3 | 45 | ctf_grow_ptrtab (ctf_dict_t *fp) |
676c3ecb NA |
46 | { |
47 | size_t new_ptrtab_len = fp->ctf_ptrtab_len; | |
48 | ||
49 | /* We allocate one more ptrtab entry than we need, for the initial zero, | |
50 | plus one because the caller will probably allocate a new type. */ | |
51 | ||
52 | if (fp->ctf_ptrtab == NULL) | |
53 | new_ptrtab_len = 1024; | |
54 | else if ((fp->ctf_typemax + 2) > fp->ctf_ptrtab_len) | |
55 | new_ptrtab_len = fp->ctf_ptrtab_len * 1.25; | |
56 | ||
57 | if (new_ptrtab_len != fp->ctf_ptrtab_len) | |
58 | { | |
59 | uint32_t *new_ptrtab; | |
60 | ||
61 | if ((new_ptrtab = realloc (fp->ctf_ptrtab, | |
62 | new_ptrtab_len * sizeof (uint32_t))) == NULL) | |
63 | return (ctf_set_errno (fp, ENOMEM)); | |
64 | ||
65 | fp->ctf_ptrtab = new_ptrtab; | |
66 | memset (fp->ctf_ptrtab + fp->ctf_ptrtab_len, 0, | |
67 | (new_ptrtab_len - fp->ctf_ptrtab_len) * sizeof (uint32_t)); | |
68 | fp->ctf_ptrtab_len = new_ptrtab_len; | |
69 | } | |
70 | return 0; | |
71 | } | |
72 | ||
77d724a7 NA |
73 | /* Make sure a vlen has enough space: expand it otherwise. Unlike the ptrtab, |
74 | which grows quite slowly, the vlen grows in big jumps because it is quite | |
75 | expensive to expand: the caller has to scan the old vlen for string refs | |
76 | first and remove them, then re-add them afterwards. The initial size is | |
77 | more or less arbitrary. */ | |
78 | static int | |
79 | ctf_grow_vlen (ctf_dict_t *fp, ctf_dtdef_t *dtd, size_t vlen) | |
80 | { | |
81 | unsigned char *old = dtd->dtd_vlen; | |
82 | ||
83 | if (dtd->dtd_vlen_alloc > vlen) | |
84 | return 0; | |
85 | ||
86 | if ((dtd->dtd_vlen = realloc (dtd->dtd_vlen, | |
87 | dtd->dtd_vlen_alloc * 2)) == NULL) | |
88 | { | |
89 | dtd->dtd_vlen = old; | |
90 | return (ctf_set_errno (fp, ENOMEM)); | |
91 | } | |
92 | memset (dtd->dtd_vlen + dtd->dtd_vlen_alloc, 0, dtd->dtd_vlen_alloc); | |
93 | dtd->dtd_vlen_alloc *= 2; | |
94 | return 0; | |
95 | } | |
96 | ||
139633c3 NA |
97 | /* To create an empty CTF dict, we just declare a zeroed header and call |
98 | ctf_bufopen() on it. If ctf_bufopen succeeds, we mark the new dict r/w and | |
99 | initialize the dynamic members. We start assigning type IDs at 1 because | |
f5e9c9bd | 100 | type ID 0 is used as a sentinel and a not-found indicator. */ |
47d546f4 | 101 | |
139633c3 | 102 | ctf_dict_t * |
47d546f4 NA |
103 | ctf_create (int *errp) |
104 | { | |
105 | static const ctf_header_t hdr = { .cth_preamble = { CTF_MAGIC, CTF_VERSION, 0 } }; | |
106 | ||
107 | ctf_dynhash_t *dthash; | |
108 | ctf_dynhash_t *dvhash; | |
676c3ecb | 109 | ctf_dynhash_t *structs = NULL, *unions = NULL, *enums = NULL, *names = NULL; |
1136c379 | 110 | ctf_dynhash_t *objthash = NULL, *funchash = NULL; |
47d546f4 | 111 | ctf_sect_t cts; |
139633c3 | 112 | ctf_dict_t *fp; |
47d546f4 NA |
113 | |
114 | libctf_init_debug(); | |
115 | dthash = ctf_dynhash_create (ctf_hash_integer, ctf_hash_eq_integer, | |
116 | NULL, NULL); | |
117 | if (dthash == NULL) | |
118 | { | |
119 | ctf_set_open_errno (errp, EAGAIN); | |
120 | goto err; | |
121 | } | |
122 | ||
123 | dvhash = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, | |
124 | NULL, NULL); | |
125 | if (dvhash == NULL) | |
126 | { | |
127 | ctf_set_open_errno (errp, EAGAIN); | |
128 | goto err_dt; | |
129 | } | |
130 | ||
676c3ecb NA |
131 | structs = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, |
132 | NULL, NULL); | |
133 | unions = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, | |
134 | NULL, NULL); | |
135 | enums = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, | |
136 | NULL, NULL); | |
137 | names = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, | |
138 | NULL, NULL); | |
1136c379 NA |
139 | objthash = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, |
140 | free, NULL); | |
141 | funchash = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, | |
142 | free, NULL); | |
676c3ecb | 143 | if (!structs || !unions || !enums || !names) |
47d546f4 NA |
144 | { |
145 | ctf_set_open_errno (errp, EAGAIN); | |
146 | goto err_dv; | |
147 | } | |
148 | ||
149 | cts.cts_name = _CTF_SECTION; | |
47d546f4 NA |
150 | cts.cts_data = &hdr; |
151 | cts.cts_size = sizeof (hdr); | |
152 | cts.cts_entsize = 1; | |
47d546f4 | 153 | |
676c3ecb NA |
154 | if ((fp = ctf_bufopen_internal (&cts, NULL, NULL, NULL, 1, errp)) == NULL) |
155 | goto err_dv; | |
47d546f4 | 156 | |
54a02191 NA |
157 | fp->ctf_structs = structs; |
158 | fp->ctf_unions = unions; | |
159 | fp->ctf_enums = enums; | |
160 | fp->ctf_names = names; | |
1136c379 NA |
161 | fp->ctf_objthash = objthash; |
162 | fp->ctf_funchash = funchash; | |
47d546f4 NA |
163 | fp->ctf_dthash = dthash; |
164 | fp->ctf_dvhash = dvhash; | |
47d546f4 | 165 | fp->ctf_dtoldid = 0; |
f57cf0e3 | 166 | fp->ctf_snapshots = 1; |
47d546f4 | 167 | fp->ctf_snapshot_lu = 0; |
dd987f00 | 168 | fp->ctf_flags |= LCTF_DIRTY; |
47d546f4 | 169 | |
676c3ecb NA |
170 | ctf_set_ctl_hashes (fp); |
171 | ctf_setmodel (fp, CTF_MODEL_NATIVE); | |
172 | if (ctf_grow_ptrtab (fp) < 0) | |
173 | { | |
174 | ctf_set_open_errno (errp, ctf_errno (fp)); | |
139633c3 | 175 | ctf_dict_close (fp); |
676c3ecb NA |
176 | return NULL; |
177 | } | |
178 | ||
47d546f4 NA |
179 | return fp; |
180 | ||
47d546f4 | 181 | err_dv: |
676c3ecb NA |
182 | ctf_dynhash_destroy (structs); |
183 | ctf_dynhash_destroy (unions); | |
184 | ctf_dynhash_destroy (enums); | |
185 | ctf_dynhash_destroy (names); | |
1136c379 NA |
186 | ctf_dynhash_destroy (objthash); |
187 | ctf_dynhash_destroy (funchash); | |
47d546f4 NA |
188 | ctf_dynhash_destroy (dvhash); |
189 | err_dt: | |
190 | ctf_dynhash_destroy (dthash); | |
191 | err: | |
192 | return NULL; | |
193 | } | |
194 | ||
676c3ecb | 195 | /* Compatibility: just update the threshold for ctf_discard. */ |
47d546f4 | 196 | int |
139633c3 | 197 | ctf_update (ctf_dict_t *fp) |
676c3ecb NA |
198 | { |
199 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
200 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
201 | ||
202 | fp->ctf_dtoldid = fp->ctf_typemax; | |
203 | return 0; | |
204 | } | |
205 | ||
54a02191 | 206 | ctf_dynhash_t * |
139633c3 | 207 | ctf_name_table (ctf_dict_t *fp, int kind) |
47d546f4 | 208 | { |
47d546f4 NA |
209 | switch (kind) |
210 | { | |
211 | case CTF_K_STRUCT: | |
54a02191 | 212 | return fp->ctf_structs; |
47d546f4 | 213 | case CTF_K_UNION: |
54a02191 | 214 | return fp->ctf_unions; |
47d546f4 | 215 | case CTF_K_ENUM: |
54a02191 | 216 | return fp->ctf_enums; |
47d546f4 | 217 | default: |
54a02191 | 218 | return fp->ctf_names; |
47d546f4 | 219 | } |
47d546f4 NA |
220 | } |
221 | ||
24865428 | 222 | int |
139633c3 | 223 | ctf_dtd_insert (ctf_dict_t *fp, ctf_dtdef_t *dtd, int flag, int kind) |
47d546f4 | 224 | { |
676c3ecb | 225 | const char *name; |
8c419a91 NA |
226 | if (ctf_dynhash_insert (fp->ctf_dthash, (void *) (uintptr_t) dtd->dtd_type, |
227 | dtd) < 0) | |
998a4f58 | 228 | return ctf_set_errno (fp, ENOMEM); |
24865428 | 229 | |
fe4c2d55 | 230 | if (flag == CTF_ADD_ROOT && dtd->dtd_data.ctt_name |
676c3ecb | 231 | && (name = ctf_strraw (fp, dtd->dtd_data.ctt_name)) != NULL) |
47d546f4 | 232 | { |
54a02191 | 233 | if (ctf_dynhash_insert (ctf_name_table (fp, kind), |
8c419a91 NA |
234 | (char *) name, (void *) (uintptr_t) |
235 | dtd->dtd_type) < 0) | |
676c3ecb | 236 | { |
8c419a91 NA |
237 | ctf_dynhash_remove (fp->ctf_dthash, (void *) (uintptr_t) |
238 | dtd->dtd_type); | |
998a4f58 | 239 | return ctf_set_errno (fp, ENOMEM); |
676c3ecb | 240 | } |
47d546f4 | 241 | } |
24865428 NA |
242 | ctf_list_append (&fp->ctf_dtdefs, dtd); |
243 | return 0; | |
47d546f4 NA |
244 | } |
245 | ||
246 | void | |
139633c3 | 247 | ctf_dtd_delete (ctf_dict_t *fp, ctf_dtdef_t *dtd) |
47d546f4 | 248 | { |
47d546f4 | 249 | int kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); |
77d724a7 | 250 | size_t vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info); |
8ffcdf18 | 251 | int name_kind = kind; |
676c3ecb | 252 | const char *name; |
47d546f4 | 253 | |
8c419a91 | 254 | ctf_dynhash_remove (fp->ctf_dthash, (void *) (uintptr_t) dtd->dtd_type); |
47d546f4 NA |
255 | |
256 | switch (kind) | |
257 | { | |
258 | case CTF_K_STRUCT: | |
259 | case CTF_K_UNION: | |
08c428af NA |
260 | { |
261 | ctf_lmember_t *memb = (ctf_lmember_t *) dtd->dtd_vlen; | |
262 | size_t i; | |
263 | ||
264 | for (i = 0; i < vlen; i++) | |
265 | ctf_str_remove_ref (fp, ctf_strraw (fp, memb[i].ctlm_name), | |
266 | &memb[i].ctlm_name); | |
267 | } | |
47d546f4 | 268 | break; |
77d724a7 NA |
269 | case CTF_K_ENUM: |
270 | { | |
271 | ctf_enum_t *en = (ctf_enum_t *) dtd->dtd_vlen; | |
272 | size_t i; | |
273 | ||
274 | for (i = 0; i < vlen; i++) | |
275 | ctf_str_remove_ref (fp, ctf_strraw (fp, en[i].cte_name), | |
276 | &en[i].cte_name); | |
277 | } | |
278 | break; | |
8ffcdf18 NA |
279 | case CTF_K_FORWARD: |
280 | name_kind = dtd->dtd_data.ctt_type; | |
281 | break; | |
47d546f4 | 282 | } |
77d724a7 NA |
283 | free (dtd->dtd_vlen); |
284 | dtd->dtd_vlen_alloc = 0; | |
47d546f4 | 285 | |
676c3ecb | 286 | if (dtd->dtd_data.ctt_name |
fe4c2d55 NA |
287 | && (name = ctf_strraw (fp, dtd->dtd_data.ctt_name)) != NULL |
288 | && LCTF_INFO_ISROOT (fp, dtd->dtd_data.ctt_info)) | |
47d546f4 | 289 | { |
54a02191 | 290 | ctf_dynhash_remove (ctf_name_table (fp, name_kind), name); |
676c3ecb | 291 | ctf_str_remove_ref (fp, name, &dtd->dtd_data.ctt_name); |
47d546f4 NA |
292 | } |
293 | ||
294 | ctf_list_delete (&fp->ctf_dtdefs, dtd); | |
de07e349 | 295 | free (dtd); |
47d546f4 NA |
296 | } |
297 | ||
298 | ctf_dtdef_t * | |
139633c3 | 299 | ctf_dtd_lookup (const ctf_dict_t *fp, ctf_id_t type) |
47d546f4 | 300 | { |
cd4a8fc4 NA |
301 | if ((fp->ctf_flags & LCTF_CHILD) && LCTF_TYPE_ISPARENT (fp, type)) |
302 | fp = fp->ctf_parent; | |
303 | ||
8c419a91 NA |
304 | return (ctf_dtdef_t *) |
305 | ctf_dynhash_lookup (fp->ctf_dthash, (void *) (uintptr_t) type); | |
47d546f4 NA |
306 | } |
307 | ||
47d546f4 | 308 | ctf_dtdef_t * |
139633c3 | 309 | ctf_dynamic_type (const ctf_dict_t *fp, ctf_id_t id) |
47d546f4 NA |
310 | { |
311 | ctf_id_t idx; | |
312 | ||
676c3ecb NA |
313 | if (!(fp->ctf_flags & LCTF_RDWR)) |
314 | return NULL; | |
315 | ||
47d546f4 NA |
316 | if ((fp->ctf_flags & LCTF_CHILD) && LCTF_TYPE_ISPARENT (fp, id)) |
317 | fp = fp->ctf_parent; | |
318 | ||
319 | idx = LCTF_TYPE_TO_INDEX(fp, id); | |
320 | ||
676c3ecb | 321 | if ((unsigned long) idx <= fp->ctf_typemax) |
47d546f4 NA |
322 | return ctf_dtd_lookup (fp, id); |
323 | return NULL; | |
324 | } | |
325 | ||
24865428 | 326 | int |
139633c3 | 327 | ctf_dvd_insert (ctf_dict_t *fp, ctf_dvdef_t *dvd) |
47d546f4 | 328 | { |
24865428 | 329 | if (ctf_dynhash_insert (fp->ctf_dvhash, dvd->dvd_name, dvd) < 0) |
998a4f58 | 330 | return ctf_set_errno (fp, ENOMEM); |
47d546f4 | 331 | ctf_list_append (&fp->ctf_dvdefs, dvd); |
24865428 | 332 | return 0; |
47d546f4 NA |
333 | } |
334 | ||
335 | void | |
139633c3 | 336 | ctf_dvd_delete (ctf_dict_t *fp, ctf_dvdef_t *dvd) |
47d546f4 NA |
337 | { |
338 | ctf_dynhash_remove (fp->ctf_dvhash, dvd->dvd_name); | |
de07e349 | 339 | free (dvd->dvd_name); |
47d546f4 NA |
340 | |
341 | ctf_list_delete (&fp->ctf_dvdefs, dvd); | |
de07e349 | 342 | free (dvd); |
47d546f4 NA |
343 | } |
344 | ||
345 | ctf_dvdef_t * | |
139633c3 | 346 | ctf_dvd_lookup (const ctf_dict_t *fp, const char *name) |
47d546f4 NA |
347 | { |
348 | return (ctf_dvdef_t *) ctf_dynhash_lookup (fp->ctf_dvhash, name); | |
349 | } | |
350 | ||
351 | /* Discard all of the dynamic type definitions and variable definitions that | |
139633c3 NA |
352 | have been added to the dict since the last call to ctf_update(). We locate |
353 | such types by scanning the dtd list and deleting elements that have type IDs | |
354 | greater than ctf_dtoldid, which is set by ctf_update(), above, and by | |
355 | scanning the variable list and deleting elements that have update IDs equal | |
356 | to the current value of the last-update snapshot count (indicating that they | |
357 | were added after the most recent call to ctf_update()). */ | |
47d546f4 | 358 | int |
139633c3 | 359 | ctf_discard (ctf_dict_t *fp) |
47d546f4 NA |
360 | { |
361 | ctf_snapshot_id_t last_update = | |
362 | { fp->ctf_dtoldid, | |
363 | fp->ctf_snapshot_lu + 1 }; | |
364 | ||
365 | /* Update required? */ | |
366 | if (!(fp->ctf_flags & LCTF_DIRTY)) | |
367 | return 0; | |
368 | ||
369 | return (ctf_rollback (fp, last_update)); | |
370 | } | |
371 | ||
372 | ctf_snapshot_id_t | |
139633c3 | 373 | ctf_snapshot (ctf_dict_t *fp) |
47d546f4 NA |
374 | { |
375 | ctf_snapshot_id_t snapid; | |
676c3ecb | 376 | snapid.dtd_id = fp->ctf_typemax; |
47d546f4 NA |
377 | snapid.snapshot_id = fp->ctf_snapshots++; |
378 | return snapid; | |
379 | } | |
380 | ||
381 | /* Like ctf_discard(), only discards everything after a particular ID. */ | |
382 | int | |
139633c3 | 383 | ctf_rollback (ctf_dict_t *fp, ctf_snapshot_id_t id) |
47d546f4 NA |
384 | { |
385 | ctf_dtdef_t *dtd, *ntd; | |
386 | ctf_dvdef_t *dvd, *nvd; | |
387 | ||
388 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
389 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
390 | ||
47d546f4 NA |
391 | if (fp->ctf_snapshot_lu >= id.snapshot_id) |
392 | return (ctf_set_errno (fp, ECTF_OVERROLLBACK)); | |
393 | ||
394 | for (dtd = ctf_list_next (&fp->ctf_dtdefs); dtd != NULL; dtd = ntd) | |
395 | { | |
676c3ecb NA |
396 | int kind; |
397 | const char *name; | |
398 | ||
47d546f4 NA |
399 | ntd = ctf_list_next (dtd); |
400 | ||
401 | if (LCTF_TYPE_TO_INDEX (fp, dtd->dtd_type) <= id.dtd_id) | |
402 | continue; | |
403 | ||
676c3ecb | 404 | kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); |
8ffcdf18 NA |
405 | if (kind == CTF_K_FORWARD) |
406 | kind = dtd->dtd_data.ctt_type; | |
676c3ecb NA |
407 | |
408 | if (dtd->dtd_data.ctt_name | |
fe4c2d55 NA |
409 | && (name = ctf_strraw (fp, dtd->dtd_data.ctt_name)) != NULL |
410 | && LCTF_INFO_ISROOT (fp, dtd->dtd_data.ctt_info)) | |
676c3ecb | 411 | { |
54a02191 | 412 | ctf_dynhash_remove (ctf_name_table (fp, kind), name); |
676c3ecb NA |
413 | ctf_str_remove_ref (fp, name, &dtd->dtd_data.ctt_name); |
414 | } | |
415 | ||
8c419a91 | 416 | ctf_dynhash_remove (fp->ctf_dthash, (void *) (uintptr_t) dtd->dtd_type); |
47d546f4 NA |
417 | ctf_dtd_delete (fp, dtd); |
418 | } | |
419 | ||
420 | for (dvd = ctf_list_next (&fp->ctf_dvdefs); dvd != NULL; dvd = nvd) | |
421 | { | |
422 | nvd = ctf_list_next (dvd); | |
423 | ||
424 | if (dvd->dvd_snapshots <= id.snapshot_id) | |
425 | continue; | |
426 | ||
427 | ctf_dvd_delete (fp, dvd); | |
428 | } | |
429 | ||
676c3ecb | 430 | fp->ctf_typemax = id.dtd_id; |
47d546f4 NA |
431 | fp->ctf_snapshots = id.snapshot_id; |
432 | ||
433 | if (fp->ctf_snapshots == fp->ctf_snapshot_lu) | |
434 | fp->ctf_flags &= ~LCTF_DIRTY; | |
435 | ||
436 | return 0; | |
437 | } | |
438 | ||
77d724a7 NA |
439 | /* Note: vlen is the amount of space *allocated* for the vlen. It may well not |
440 | be the amount of space used (yet): the space used is declared in per-kind | |
441 | fashion in the dtd_data's info word. */ | |
47d546f4 | 442 | static ctf_id_t |
139633c3 | 443 | ctf_add_generic (ctf_dict_t *fp, uint32_t flag, const char *name, int kind, |
7879dd88 | 444 | size_t vlen, ctf_dtdef_t **rp) |
47d546f4 NA |
445 | { |
446 | ctf_dtdef_t *dtd; | |
447 | ctf_id_t type; | |
47d546f4 NA |
448 | |
449 | if (flag != CTF_ADD_NONROOT && flag != CTF_ADD_ROOT) | |
998a4f58 | 450 | return (ctf_set_typed_errno (fp, EINVAL)); |
47d546f4 NA |
451 | |
452 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
998a4f58 | 453 | return (ctf_set_typed_errno (fp, ECTF_RDONLY)); |
47d546f4 | 454 | |
676c3ecb | 455 | if (LCTF_INDEX_TO_TYPE (fp, fp->ctf_typemax, 1) >= CTF_MAX_TYPE) |
998a4f58 | 456 | return (ctf_set_typed_errno (fp, ECTF_FULL)); |
47d546f4 | 457 | |
676c3ecb | 458 | if (LCTF_INDEX_TO_TYPE (fp, fp->ctf_typemax, 1) == (CTF_MAX_PTYPE - 1)) |
998a4f58 | 459 | return (ctf_set_typed_errno (fp, ECTF_FULL)); |
47d546f4 | 460 | |
676c3ecb NA |
461 | /* Make sure ptrtab always grows to be big enough for all types. */ |
462 | if (ctf_grow_ptrtab (fp) < 0) | |
7879dd88 | 463 | return CTF_ERR; /* errno is set for us. */ |
676c3ecb | 464 | |
7879dd88 | 465 | if ((dtd = calloc (1, sizeof (ctf_dtdef_t))) == NULL) |
998a4f58 | 466 | return (ctf_set_typed_errno (fp, EAGAIN)); |
47d546f4 | 467 | |
77d724a7 | 468 | dtd->dtd_vlen_alloc = vlen; |
7879dd88 NA |
469 | if (vlen > 0) |
470 | { | |
471 | if ((dtd->dtd_vlen = calloc (1, vlen)) == NULL) | |
472 | goto oom; | |
473 | } | |
474 | else | |
475 | dtd->dtd_vlen = NULL; | |
476 | ||
676c3ecb | 477 | type = ++fp->ctf_typemax; |
47d546f4 NA |
478 | type = LCTF_INDEX_TO_TYPE (fp, type, (fp->ctf_flags & LCTF_CHILD)); |
479 | ||
986e9e3a NA |
480 | dtd->dtd_data.ctt_name = ctf_str_add_pending (fp, name, |
481 | &dtd->dtd_data.ctt_name); | |
47d546f4 NA |
482 | dtd->dtd_type = type; |
483 | ||
676c3ecb | 484 | if (dtd->dtd_data.ctt_name == 0 && name != NULL && name[0] != '\0') |
7879dd88 | 485 | goto oom; |
676c3ecb | 486 | |
fe4c2d55 | 487 | if (ctf_dtd_insert (fp, dtd, flag, kind) < 0) |
7879dd88 NA |
488 | goto err; /* errno is set for us. */ |
489 | ||
47d546f4 NA |
490 | fp->ctf_flags |= LCTF_DIRTY; |
491 | ||
492 | *rp = dtd; | |
493 | return type; | |
7879dd88 NA |
494 | |
495 | oom: | |
496 | ctf_set_errno (fp, EAGAIN); | |
497 | err: | |
498 | free (dtd->dtd_vlen); | |
499 | free (dtd); | |
500 | return CTF_ERR; | |
47d546f4 NA |
501 | } |
502 | ||
503 | /* When encoding integer sizes, we want to convert a byte count in the range | |
504 | 1-8 to the closest power of 2 (e.g. 3->4, 5->8, etc). The clp2() function | |
505 | is a clever implementation from "Hacker's Delight" by Henry Warren, Jr. */ | |
506 | static size_t | |
507 | clp2 (size_t x) | |
508 | { | |
509 | x--; | |
510 | ||
511 | x |= (x >> 1); | |
512 | x |= (x >> 2); | |
513 | x |= (x >> 4); | |
514 | x |= (x >> 8); | |
515 | x |= (x >> 16); | |
516 | ||
517 | return (x + 1); | |
518 | } | |
519 | ||
0f0c11f7 | 520 | ctf_id_t |
139633c3 | 521 | ctf_add_encoded (ctf_dict_t *fp, uint32_t flag, |
47d546f4 NA |
522 | const char *name, const ctf_encoding_t *ep, uint32_t kind) |
523 | { | |
524 | ctf_dtdef_t *dtd; | |
525 | ctf_id_t type; | |
7879dd88 | 526 | uint32_t encoding; |
47d546f4 NA |
527 | |
528 | if (ep == NULL) | |
998a4f58 | 529 | return (ctf_set_typed_errno (fp, EINVAL)); |
47d546f4 | 530 | |
caa17049 | 531 | if (name == NULL || name[0] == '\0') |
998a4f58 | 532 | return (ctf_set_typed_errno (fp, ECTF_NONAME)); |
caa17049 | 533 | |
7879dd88 | 534 | if (!ctf_assert (fp, kind == CTF_K_INTEGER || kind == CTF_K_FLOAT)) |
998a4f58 | 535 | return CTF_ERR; /* errno is set for us. */ |
7879dd88 NA |
536 | |
537 | if ((type = ctf_add_generic (fp, flag, name, kind, sizeof (uint32_t), | |
538 | &dtd)) == CTF_ERR) | |
47d546f4 NA |
539 | return CTF_ERR; /* errno is set for us. */ |
540 | ||
541 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, flag, 0); | |
76fad999 TT |
542 | dtd->dtd_data.ctt_size = clp2 (P2ROUNDUP (ep->cte_bits, CHAR_BIT) |
543 | / CHAR_BIT); | |
7879dd88 NA |
544 | switch (kind) |
545 | { | |
546 | case CTF_K_INTEGER: | |
547 | encoding = CTF_INT_DATA (ep->cte_format, ep->cte_offset, ep->cte_bits); | |
548 | break; | |
549 | case CTF_K_FLOAT: | |
550 | encoding = CTF_FP_DATA (ep->cte_format, ep->cte_offset, ep->cte_bits); | |
551 | break; | |
59497587 AM |
552 | default: |
553 | /* ctf_assert is opaque with -fno-inline. This dead code avoids | |
554 | a warning about "encoding" being used uninitialized. */ | |
555 | return CTF_ERR; | |
7879dd88 NA |
556 | } |
557 | memcpy (dtd->dtd_vlen, &encoding, sizeof (encoding)); | |
47d546f4 NA |
558 | |
559 | return type; | |
560 | } | |
561 | ||
0f0c11f7 | 562 | ctf_id_t |
139633c3 | 563 | ctf_add_reftype (ctf_dict_t *fp, uint32_t flag, ctf_id_t ref, uint32_t kind) |
47d546f4 NA |
564 | { |
565 | ctf_dtdef_t *dtd; | |
566 | ctf_id_t type; | |
139633c3 | 567 | ctf_dict_t *tmp = fp; |
676c3ecb | 568 | int child = fp->ctf_flags & LCTF_CHILD; |
47d546f4 | 569 | |
a0486bac | 570 | if (ref == CTF_ERR || ref > CTF_MAX_TYPE) |
998a4f58 | 571 | return (ctf_set_typed_errno (fp, EINVAL)); |
47d546f4 | 572 | |
2361f1c8 | 573 | if (ref != 0 && ctf_lookup_by_id (&tmp, ref) == NULL) |
47d546f4 NA |
574 | return CTF_ERR; /* errno is set for us. */ |
575 | ||
7879dd88 | 576 | if ((type = ctf_add_generic (fp, flag, NULL, kind, 0, &dtd)) == CTF_ERR) |
47d546f4 NA |
577 | return CTF_ERR; /* errno is set for us. */ |
578 | ||
579 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, flag, 0); | |
580 | dtd->dtd_data.ctt_type = (uint32_t) ref; | |
581 | ||
676c3ecb NA |
582 | if (kind != CTF_K_POINTER) |
583 | return type; | |
584 | ||
78f28b89 NA |
585 | /* If we are adding a pointer, update the ptrtab, pointing at this type from |
586 | the type it points to. Note that ctf_typemax is at this point one higher | |
587 | than we want to check against, because it's just been incremented for the | |
588 | addition of this type. The pptrtab is lazily-updated as needed, so is not | |
589 | touched here. */ | |
676c3ecb NA |
590 | |
591 | uint32_t type_idx = LCTF_TYPE_TO_INDEX (fp, type); | |
592 | uint32_t ref_idx = LCTF_TYPE_TO_INDEX (fp, ref); | |
593 | ||
594 | if (LCTF_TYPE_ISCHILD (fp, ref) == child | |
595 | && ref_idx < fp->ctf_typemax) | |
78f28b89 | 596 | fp->ctf_ptrtab[ref_idx] = type_idx; |
676c3ecb | 597 | |
47d546f4 NA |
598 | return type; |
599 | } | |
600 | ||
601 | ctf_id_t | |
139633c3 | 602 | ctf_add_slice (ctf_dict_t *fp, uint32_t flag, ctf_id_t ref, |
47d546f4 NA |
603 | const ctf_encoding_t *ep) |
604 | { | |
605 | ctf_dtdef_t *dtd; | |
7879dd88 | 606 | ctf_slice_t slice; |
502e838e | 607 | ctf_id_t resolved_ref = ref; |
47d546f4 NA |
608 | ctf_id_t type; |
609 | int kind; | |
610 | const ctf_type_t *tp; | |
139633c3 | 611 | ctf_dict_t *tmp = fp; |
47d546f4 NA |
612 | |
613 | if (ep == NULL) | |
998a4f58 | 614 | return (ctf_set_typed_errno (fp, EINVAL)); |
47d546f4 NA |
615 | |
616 | if ((ep->cte_bits > 255) || (ep->cte_offset > 255)) | |
998a4f58 | 617 | return (ctf_set_typed_errno (fp, ECTF_SLICEOVERFLOW)); |
47d546f4 | 618 | |
a0486bac | 619 | if (ref == CTF_ERR || ref > CTF_MAX_TYPE) |
998a4f58 | 620 | return (ctf_set_typed_errno (fp, EINVAL)); |
47d546f4 | 621 | |
2361f1c8 | 622 | if (ref != 0 && ((tp = ctf_lookup_by_id (&tmp, ref)) == NULL)) |
47d546f4 NA |
623 | return CTF_ERR; /* errno is set for us. */ |
624 | ||
502e838e NA |
625 | /* Make sure we ultimately point to an integral type. We also allow slices to |
626 | point to the unimplemented type, for now, because the compiler can emit | |
627 | such slices, though they're not very much use. */ | |
628 | ||
d7474051 NA |
629 | resolved_ref = ctf_type_resolve_unsliced (fp, ref); |
630 | kind = ctf_type_kind_unsliced (fp, resolved_ref); | |
502e838e | 631 | |
47d546f4 | 632 | if ((kind != CTF_K_INTEGER) && (kind != CTF_K_FLOAT) && |
2361f1c8 NA |
633 | (kind != CTF_K_ENUM) |
634 | && (ref != 0)) | |
998a4f58 | 635 | return (ctf_set_typed_errno (fp, ECTF_NOTINTFP)); |
47d546f4 | 636 | |
7879dd88 NA |
637 | if ((type = ctf_add_generic (fp, flag, NULL, CTF_K_SLICE, |
638 | sizeof (ctf_slice_t), &dtd)) == CTF_ERR) | |
47d546f4 NA |
639 | return CTF_ERR; /* errno is set for us. */ |
640 | ||
7879dd88 NA |
641 | memset (&slice, 0, sizeof (ctf_slice_t)); |
642 | ||
47d546f4 | 643 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_SLICE, flag, 0); |
76fad999 TT |
644 | dtd->dtd_data.ctt_size = clp2 (P2ROUNDUP (ep->cte_bits, CHAR_BIT) |
645 | / CHAR_BIT); | |
7879dd88 NA |
646 | slice.cts_type = (uint32_t) ref; |
647 | slice.cts_bits = ep->cte_bits; | |
648 | slice.cts_offset = ep->cte_offset; | |
649 | memcpy (dtd->dtd_vlen, &slice, sizeof (ctf_slice_t)); | |
47d546f4 NA |
650 | |
651 | return type; | |
652 | } | |
653 | ||
654 | ctf_id_t | |
139633c3 | 655 | ctf_add_integer (ctf_dict_t *fp, uint32_t flag, |
47d546f4 NA |
656 | const char *name, const ctf_encoding_t *ep) |
657 | { | |
658 | return (ctf_add_encoded (fp, flag, name, ep, CTF_K_INTEGER)); | |
659 | } | |
660 | ||
661 | ctf_id_t | |
139633c3 | 662 | ctf_add_float (ctf_dict_t *fp, uint32_t flag, |
47d546f4 NA |
663 | const char *name, const ctf_encoding_t *ep) |
664 | { | |
665 | return (ctf_add_encoded (fp, flag, name, ep, CTF_K_FLOAT)); | |
666 | } | |
667 | ||
668 | ctf_id_t | |
139633c3 | 669 | ctf_add_pointer (ctf_dict_t *fp, uint32_t flag, ctf_id_t ref) |
47d546f4 NA |
670 | { |
671 | return (ctf_add_reftype (fp, flag, ref, CTF_K_POINTER)); | |
672 | } | |
673 | ||
674 | ctf_id_t | |
139633c3 | 675 | ctf_add_array (ctf_dict_t *fp, uint32_t flag, const ctf_arinfo_t *arp) |
47d546f4 NA |
676 | { |
677 | ctf_dtdef_t *dtd; | |
534444b1 | 678 | ctf_array_t cta; |
47d546f4 | 679 | ctf_id_t type; |
139633c3 | 680 | ctf_dict_t *tmp = fp; |
47d546f4 NA |
681 | |
682 | if (arp == NULL) | |
998a4f58 | 683 | return (ctf_set_typed_errno (fp, EINVAL)); |
47d546f4 | 684 | |
2361f1c8 NA |
685 | if (arp->ctr_contents != 0 |
686 | && ctf_lookup_by_id (&tmp, arp->ctr_contents) == NULL) | |
47d546f4 NA |
687 | return CTF_ERR; /* errno is set for us. */ |
688 | ||
689 | tmp = fp; | |
690 | if (ctf_lookup_by_id (&tmp, arp->ctr_index) == NULL) | |
691 | return CTF_ERR; /* errno is set for us. */ | |
692 | ||
ffeece6a NA |
693 | if (ctf_type_kind (fp, arp->ctr_index) == CTF_K_FORWARD) |
694 | { | |
695 | ctf_err_warn (fp, 1, ECTF_INCOMPLETE, | |
696 | _("ctf_add_array: index type %lx is incomplete"), | |
697 | arp->ctr_contents); | |
998a4f58 | 698 | return (ctf_set_typed_errno (fp, ECTF_INCOMPLETE)); |
ffeece6a NA |
699 | } |
700 | ||
7879dd88 | 701 | if ((type = ctf_add_generic (fp, flag, NULL, CTF_K_ARRAY, |
534444b1 | 702 | sizeof (ctf_array_t), &dtd)) == CTF_ERR) |
47d546f4 NA |
703 | return CTF_ERR; /* errno is set for us. */ |
704 | ||
534444b1 NA |
705 | memset (&cta, 0, sizeof (ctf_array_t)); |
706 | ||
47d546f4 NA |
707 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_ARRAY, flag, 0); |
708 | dtd->dtd_data.ctt_size = 0; | |
534444b1 NA |
709 | cta.cta_contents = (uint32_t) arp->ctr_contents; |
710 | cta.cta_index = (uint32_t) arp->ctr_index; | |
711 | cta.cta_nelems = arp->ctr_nelems; | |
712 | memcpy (dtd->dtd_vlen, &cta, sizeof (ctf_array_t)); | |
47d546f4 NA |
713 | |
714 | return type; | |
715 | } | |
716 | ||
717 | int | |
139633c3 | 718 | ctf_set_array (ctf_dict_t *fp, ctf_id_t type, const ctf_arinfo_t *arp) |
47d546f4 | 719 | { |
cd4a8fc4 | 720 | ctf_dict_t *ofp = fp; |
47d546f4 | 721 | ctf_dtdef_t *dtd = ctf_dtd_lookup (fp, type); |
534444b1 | 722 | ctf_array_t *vlen; |
47d546f4 | 723 | |
cd4a8fc4 NA |
724 | if ((fp->ctf_flags & LCTF_CHILD) && LCTF_TYPE_ISPARENT (fp, type)) |
725 | fp = fp->ctf_parent; | |
726 | ||
727 | if (!(ofp->ctf_flags & LCTF_RDWR)) | |
728 | return (ctf_set_errno (ofp, ECTF_RDONLY)); | |
729 | ||
47d546f4 | 730 | if (!(fp->ctf_flags & LCTF_RDWR)) |
cd4a8fc4 | 731 | return (ctf_set_errno (ofp, ECTF_RDONLY)); |
47d546f4 NA |
732 | |
733 | if (dtd == NULL | |
734 | || LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info) != CTF_K_ARRAY) | |
cd4a8fc4 | 735 | return (ctf_set_errno (ofp, ECTF_BADID)); |
47d546f4 | 736 | |
534444b1 | 737 | vlen = (ctf_array_t *) dtd->dtd_vlen; |
47d546f4 | 738 | fp->ctf_flags |= LCTF_DIRTY; |
534444b1 NA |
739 | vlen->cta_contents = (uint32_t) arp->ctr_contents; |
740 | vlen->cta_index = (uint32_t) arp->ctr_index; | |
741 | vlen->cta_nelems = arp->ctr_nelems; | |
47d546f4 NA |
742 | |
743 | return 0; | |
744 | } | |
745 | ||
746 | ctf_id_t | |
139633c3 | 747 | ctf_add_function (ctf_dict_t *fp, uint32_t flag, |
47d546f4 NA |
748 | const ctf_funcinfo_t *ctc, const ctf_id_t *argv) |
749 | { | |
750 | ctf_dtdef_t *dtd; | |
751 | ctf_id_t type; | |
752 | uint32_t vlen; | |
81982d20 | 753 | uint32_t *vdat; |
139633c3 | 754 | ctf_dict_t *tmp = fp; |
81982d20 | 755 | size_t initial_vlen; |
47d546f4 NA |
756 | size_t i; |
757 | ||
8f235c90 | 758 | if (!(fp->ctf_flags & LCTF_RDWR)) |
998a4f58 | 759 | return (ctf_set_typed_errno (fp, ECTF_RDONLY)); |
8f235c90 | 760 | |
47d546f4 NA |
761 | if (ctc == NULL || (ctc->ctc_flags & ~CTF_FUNC_VARARG) != 0 |
762 | || (ctc->ctc_argc != 0 && argv == NULL)) | |
998a4f58 | 763 | return (ctf_set_typed_errno (fp, EINVAL)); |
47d546f4 NA |
764 | |
765 | vlen = ctc->ctc_argc; | |
766 | if (ctc->ctc_flags & CTF_FUNC_VARARG) | |
767 | vlen++; /* Add trailing zero to indicate varargs (see below). */ | |
768 | ||
2361f1c8 NA |
769 | if (ctc->ctc_return != 0 |
770 | && ctf_lookup_by_id (&tmp, ctc->ctc_return) == NULL) | |
81982d20 | 771 | return CTF_ERR; /* errno is set for us. */ |
47d546f4 | 772 | |
47d546f4 | 773 | if (vlen > CTF_MAX_VLEN) |
998a4f58 | 774 | return (ctf_set_typed_errno (fp, EOVERFLOW)); |
47d546f4 | 775 | |
81982d20 NA |
776 | /* One word extra allocated for padding for 4-byte alignment if need be. |
777 | Not reflected in vlen: we don't want to copy anything into it, and | |
778 | it's in addition to (e.g.) the trailing 0 indicating varargs. */ | |
779 | ||
780 | initial_vlen = (sizeof (uint32_t) * (vlen + (vlen & 1))); | |
781 | if ((type = ctf_add_generic (fp, flag, NULL, CTF_K_FUNCTION, | |
782 | initial_vlen, &dtd)) == CTF_ERR) | |
783 | return CTF_ERR; /* errno is set for us. */ | |
784 | ||
785 | vdat = (uint32_t *) dtd->dtd_vlen; | |
47d546f4 | 786 | |
afd78bd6 NA |
787 | for (i = 0; i < ctc->ctc_argc; i++) |
788 | { | |
789 | tmp = fp; | |
790 | if (argv[i] != 0 && ctf_lookup_by_id (&tmp, argv[i]) == NULL) | |
81982d20 | 791 | return CTF_ERR; /* errno is set for us. */ |
afd78bd6 NA |
792 | vdat[i] = (uint32_t) argv[i]; |
793 | } | |
794 | ||
47d546f4 NA |
795 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_FUNCTION, flag, vlen); |
796 | dtd->dtd_data.ctt_type = (uint32_t) ctc->ctc_return; | |
797 | ||
47d546f4 NA |
798 | if (ctc->ctc_flags & CTF_FUNC_VARARG) |
799 | vdat[vlen - 1] = 0; /* Add trailing zero to indicate varargs. */ | |
47d546f4 NA |
800 | |
801 | return type; | |
802 | } | |
803 | ||
804 | ctf_id_t | |
139633c3 | 805 | ctf_add_struct_sized (ctf_dict_t *fp, uint32_t flag, const char *name, |
47d546f4 NA |
806 | size_t size) |
807 | { | |
47d546f4 NA |
808 | ctf_dtdef_t *dtd; |
809 | ctf_id_t type = 0; | |
08c428af | 810 | size_t initial_vlen = sizeof (ctf_lmember_t) * INITIAL_VLEN; |
47d546f4 | 811 | |
fe4c2d55 | 812 | /* Promote root-visible forwards to structs. */ |
47d546f4 | 813 | if (name != NULL) |
676c3ecb | 814 | type = ctf_lookup_by_rawname (fp, CTF_K_STRUCT, name); |
47d546f4 NA |
815 | |
816 | if (type != 0 && ctf_type_kind (fp, type) == CTF_K_FORWARD) | |
817 | dtd = ctf_dtd_lookup (fp, type); | |
676c3ecb | 818 | else if ((type = ctf_add_generic (fp, flag, name, CTF_K_STRUCT, |
08c428af | 819 | initial_vlen, &dtd)) == CTF_ERR) |
47d546f4 NA |
820 | return CTF_ERR; /* errno is set for us. */ |
821 | ||
08c428af NA |
822 | /* Forwards won't have any vlen yet. */ |
823 | if (dtd->dtd_vlen_alloc == 0) | |
47d546f4 | 824 | { |
08c428af | 825 | if ((dtd->dtd_vlen = calloc (1, initial_vlen)) == NULL) |
998a4f58 | 826 | return (ctf_set_typed_errno (fp, ENOMEM)); |
08c428af | 827 | dtd->dtd_vlen_alloc = initial_vlen; |
47d546f4 | 828 | } |
08c428af NA |
829 | |
830 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_STRUCT, flag, 0); | |
831 | dtd->dtd_data.ctt_size = CTF_LSIZE_SENT; | |
832 | dtd->dtd_data.ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI (size); | |
833 | dtd->dtd_data.ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO (size); | |
47d546f4 NA |
834 | |
835 | return type; | |
836 | } | |
837 | ||
838 | ctf_id_t | |
139633c3 | 839 | ctf_add_struct (ctf_dict_t *fp, uint32_t flag, const char *name) |
47d546f4 NA |
840 | { |
841 | return (ctf_add_struct_sized (fp, flag, name, 0)); | |
842 | } | |
843 | ||
844 | ctf_id_t | |
139633c3 | 845 | ctf_add_union_sized (ctf_dict_t *fp, uint32_t flag, const char *name, |
47d546f4 NA |
846 | size_t size) |
847 | { | |
47d546f4 NA |
848 | ctf_dtdef_t *dtd; |
849 | ctf_id_t type = 0; | |
08c428af | 850 | size_t initial_vlen = sizeof (ctf_lmember_t) * INITIAL_VLEN; |
47d546f4 | 851 | |
fe4c2d55 | 852 | /* Promote root-visible forwards to unions. */ |
47d546f4 | 853 | if (name != NULL) |
676c3ecb | 854 | type = ctf_lookup_by_rawname (fp, CTF_K_UNION, name); |
47d546f4 NA |
855 | |
856 | if (type != 0 && ctf_type_kind (fp, type) == CTF_K_FORWARD) | |
857 | dtd = ctf_dtd_lookup (fp, type); | |
676c3ecb | 858 | else if ((type = ctf_add_generic (fp, flag, name, CTF_K_UNION, |
08c428af | 859 | initial_vlen, &dtd)) == CTF_ERR) |
47d546f4 NA |
860 | return CTF_ERR; /* errno is set for us */ |
861 | ||
08c428af NA |
862 | /* Forwards won't have any vlen yet. */ |
863 | if (dtd->dtd_vlen_alloc == 0) | |
47d546f4 | 864 | { |
08c428af | 865 | if ((dtd->dtd_vlen = calloc (1, initial_vlen)) == NULL) |
998a4f58 | 866 | return (ctf_set_typed_errno (fp, ENOMEM)); |
08c428af | 867 | dtd->dtd_vlen_alloc = initial_vlen; |
47d546f4 | 868 | } |
08c428af NA |
869 | |
870 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_UNION, flag, 0); | |
871 | dtd->dtd_data.ctt_size = CTF_LSIZE_SENT; | |
872 | dtd->dtd_data.ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI (size); | |
873 | dtd->dtd_data.ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO (size); | |
47d546f4 NA |
874 | |
875 | return type; | |
876 | } | |
877 | ||
878 | ctf_id_t | |
139633c3 | 879 | ctf_add_union (ctf_dict_t *fp, uint32_t flag, const char *name) |
47d546f4 NA |
880 | { |
881 | return (ctf_add_union_sized (fp, flag, name, 0)); | |
882 | } | |
883 | ||
884 | ctf_id_t | |
139633c3 | 885 | ctf_add_enum (ctf_dict_t *fp, uint32_t flag, const char *name) |
47d546f4 | 886 | { |
47d546f4 NA |
887 | ctf_dtdef_t *dtd; |
888 | ctf_id_t type = 0; | |
08c428af | 889 | size_t initial_vlen = sizeof (ctf_enum_t) * INITIAL_VLEN; |
47d546f4 | 890 | |
fe4c2d55 | 891 | /* Promote root-visible forwards to enums. */ |
47d546f4 | 892 | if (name != NULL) |
676c3ecb | 893 | type = ctf_lookup_by_rawname (fp, CTF_K_ENUM, name); |
47d546f4 NA |
894 | |
895 | if (type != 0 && ctf_type_kind (fp, type) == CTF_K_FORWARD) | |
896 | dtd = ctf_dtd_lookup (fp, type); | |
676c3ecb | 897 | else if ((type = ctf_add_generic (fp, flag, name, CTF_K_ENUM, |
77d724a7 | 898 | initial_vlen, &dtd)) == CTF_ERR) |
47d546f4 NA |
899 | return CTF_ERR; /* errno is set for us. */ |
900 | ||
77d724a7 NA |
901 | /* Forwards won't have any vlen yet. */ |
902 | if (dtd->dtd_vlen_alloc == 0) | |
903 | { | |
904 | if ((dtd->dtd_vlen = calloc (1, initial_vlen)) == NULL) | |
998a4f58 | 905 | return (ctf_set_typed_errno (fp, ENOMEM)); |
77d724a7 NA |
906 | dtd->dtd_vlen_alloc = initial_vlen; |
907 | } | |
908 | ||
47d546f4 NA |
909 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_ENUM, flag, 0); |
910 | dtd->dtd_data.ctt_size = fp->ctf_dmodel->ctd_int; | |
911 | ||
912 | return type; | |
913 | } | |
914 | ||
915 | ctf_id_t | |
139633c3 | 916 | ctf_add_enum_encoded (ctf_dict_t *fp, uint32_t flag, const char *name, |
47d546f4 NA |
917 | const ctf_encoding_t *ep) |
918 | { | |
47d546f4 NA |
919 | ctf_id_t type = 0; |
920 | ||
921 | /* First, create the enum if need be, using most of the same machinery as | |
922 | ctf_add_enum(), to ensure that we do not allow things past that are not | |
923 | enums or forwards to them. (This includes other slices: you cannot slice a | |
924 | slice, which would be a useless thing to do anyway.) */ | |
925 | ||
926 | if (name != NULL) | |
676c3ecb | 927 | type = ctf_lookup_by_rawname (fp, CTF_K_ENUM, name); |
47d546f4 NA |
928 | |
929 | if (type != 0) | |
930 | { | |
931 | if ((ctf_type_kind (fp, type) != CTF_K_FORWARD) && | |
932 | (ctf_type_kind_unsliced (fp, type) != CTF_K_ENUM)) | |
998a4f58 | 933 | return (ctf_set_typed_errno (fp, ECTF_NOTINTFP)); |
47d546f4 NA |
934 | } |
935 | else if ((type = ctf_add_enum (fp, flag, name)) == CTF_ERR) | |
936 | return CTF_ERR; /* errno is set for us. */ | |
937 | ||
938 | /* Now attach a suitable slice to it. */ | |
939 | ||
940 | return ctf_add_slice (fp, flag, type, ep); | |
941 | } | |
942 | ||
943 | ctf_id_t | |
139633c3 | 944 | ctf_add_forward (ctf_dict_t *fp, uint32_t flag, const char *name, |
47d546f4 NA |
945 | uint32_t kind) |
946 | { | |
47d546f4 NA |
947 | ctf_dtdef_t *dtd; |
948 | ctf_id_t type = 0; | |
949 | ||
9850ce4d | 950 | if (!ctf_forwardable_kind (kind)) |
998a4f58 | 951 | return (ctf_set_typed_errno (fp, ECTF_NOTSUE)); |
47d546f4 | 952 | |
caa17049 | 953 | if (name == NULL || name[0] == '\0') |
998a4f58 | 954 | return (ctf_set_typed_errno (fp, ECTF_NONAME)); |
caa17049 | 955 | |
47d546f4 NA |
956 | /* If the type is already defined or exists as a forward tag, just |
957 | return the ctf_id_t of the existing definition. */ | |
958 | ||
caa17049 | 959 | type = ctf_lookup_by_rawname (fp, kind, name); |
47d546f4 | 960 | |
6bbf9da8 NA |
961 | if (type) |
962 | return type; | |
963 | ||
7879dd88 | 964 | if ((type = ctf_add_generic (fp, flag, name, kind, 0, &dtd)) == CTF_ERR) |
47d546f4 NA |
965 | return CTF_ERR; /* errno is set for us. */ |
966 | ||
967 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_FORWARD, flag, 0); | |
968 | dtd->dtd_data.ctt_type = kind; | |
969 | ||
970 | return type; | |
971 | } | |
972 | ||
49da556c NA |
973 | ctf_id_t |
974 | ctf_add_unknown (ctf_dict_t *fp, uint32_t flag, const char *name) | |
975 | { | |
976 | ctf_dtdef_t *dtd; | |
977 | ctf_id_t type = 0; | |
978 | ||
979 | /* If a type is already defined with this name, error (if not CTF_K_UNKNOWN) | |
980 | or just return it. */ | |
981 | ||
982 | if (name != NULL && name[0] != '\0' && flag == CTF_ADD_ROOT | |
983 | && (type = ctf_lookup_by_rawname (fp, CTF_K_UNKNOWN, name))) | |
984 | { | |
985 | if (ctf_type_kind (fp, type) == CTF_K_UNKNOWN) | |
986 | return type; | |
987 | else | |
988 | { | |
989 | ctf_err_warn (fp, 1, ECTF_CONFLICT, | |
990 | _("ctf_add_unknown: cannot add unknown type " | |
991 | "named %s: type of this name already defined"), | |
992 | name ? name : _("(unnamed type)")); | |
998a4f58 | 993 | return (ctf_set_typed_errno (fp, ECTF_CONFLICT)); |
49da556c NA |
994 | } |
995 | } | |
996 | ||
997 | if ((type = ctf_add_generic (fp, flag, name, CTF_K_UNKNOWN, 0, &dtd)) == CTF_ERR) | |
998 | return CTF_ERR; /* errno is set for us. */ | |
999 | ||
1000 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_UNKNOWN, flag, 0); | |
1001 | dtd->dtd_data.ctt_type = 0; | |
1002 | ||
1003 | return type; | |
1004 | } | |
1005 | ||
47d546f4 | 1006 | ctf_id_t |
139633c3 | 1007 | ctf_add_typedef (ctf_dict_t *fp, uint32_t flag, const char *name, |
47d546f4 NA |
1008 | ctf_id_t ref) |
1009 | { | |
1010 | ctf_dtdef_t *dtd; | |
1011 | ctf_id_t type; | |
139633c3 | 1012 | ctf_dict_t *tmp = fp; |
47d546f4 | 1013 | |
a0486bac | 1014 | if (ref == CTF_ERR || ref > CTF_MAX_TYPE) |
998a4f58 | 1015 | return (ctf_set_typed_errno (fp, EINVAL)); |
47d546f4 | 1016 | |
caa17049 | 1017 | if (name == NULL || name[0] == '\0') |
998a4f58 | 1018 | return (ctf_set_typed_errno (fp, ECTF_NONAME)); |
caa17049 | 1019 | |
2361f1c8 | 1020 | if (ref != 0 && ctf_lookup_by_id (&tmp, ref) == NULL) |
47d546f4 NA |
1021 | return CTF_ERR; /* errno is set for us. */ |
1022 | ||
7879dd88 | 1023 | if ((type = ctf_add_generic (fp, flag, name, CTF_K_TYPEDEF, 0, |
676c3ecb | 1024 | &dtd)) == CTF_ERR) |
47d546f4 NA |
1025 | return CTF_ERR; /* errno is set for us. */ |
1026 | ||
1027 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_TYPEDEF, flag, 0); | |
1028 | dtd->dtd_data.ctt_type = (uint32_t) ref; | |
1029 | ||
1030 | return type; | |
1031 | } | |
1032 | ||
1033 | ctf_id_t | |
139633c3 | 1034 | ctf_add_volatile (ctf_dict_t *fp, uint32_t flag, ctf_id_t ref) |
47d546f4 NA |
1035 | { |
1036 | return (ctf_add_reftype (fp, flag, ref, CTF_K_VOLATILE)); | |
1037 | } | |
1038 | ||
1039 | ctf_id_t | |
139633c3 | 1040 | ctf_add_const (ctf_dict_t *fp, uint32_t flag, ctf_id_t ref) |
47d546f4 NA |
1041 | { |
1042 | return (ctf_add_reftype (fp, flag, ref, CTF_K_CONST)); | |
1043 | } | |
1044 | ||
1045 | ctf_id_t | |
139633c3 | 1046 | ctf_add_restrict (ctf_dict_t *fp, uint32_t flag, ctf_id_t ref) |
47d546f4 NA |
1047 | { |
1048 | return (ctf_add_reftype (fp, flag, ref, CTF_K_RESTRICT)); | |
1049 | } | |
1050 | ||
1051 | int | |
139633c3 | 1052 | ctf_add_enumerator (ctf_dict_t *fp, ctf_id_t enid, const char *name, |
47d546f4 NA |
1053 | int value) |
1054 | { | |
cd4a8fc4 | 1055 | ctf_dict_t *ofp = fp; |
47d546f4 | 1056 | ctf_dtdef_t *dtd = ctf_dtd_lookup (fp, enid); |
77d724a7 NA |
1057 | unsigned char *old_vlen; |
1058 | ctf_enum_t *en; | |
1059 | size_t i; | |
47d546f4 NA |
1060 | |
1061 | uint32_t kind, vlen, root; | |
47d546f4 NA |
1062 | |
1063 | if (name == NULL) | |
1064 | return (ctf_set_errno (fp, EINVAL)); | |
1065 | ||
cd4a8fc4 NA |
1066 | if ((fp->ctf_flags & LCTF_CHILD) && LCTF_TYPE_ISPARENT (fp, enid)) |
1067 | fp = fp->ctf_parent; | |
1068 | ||
1069 | if (!(ofp->ctf_flags & LCTF_RDWR)) | |
1070 | return (ctf_set_errno (ofp, ECTF_RDONLY)); | |
1071 | ||
47d546f4 | 1072 | if (!(fp->ctf_flags & LCTF_RDWR)) |
cd4a8fc4 | 1073 | return (ctf_set_errno (ofp, ECTF_RDONLY)); |
47d546f4 NA |
1074 | |
1075 | if (dtd == NULL) | |
cd4a8fc4 | 1076 | return (ctf_set_errno (ofp, ECTF_BADID)); |
47d546f4 NA |
1077 | |
1078 | kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); | |
1079 | root = LCTF_INFO_ISROOT (fp, dtd->dtd_data.ctt_info); | |
1080 | vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info); | |
1081 | ||
1082 | if (kind != CTF_K_ENUM) | |
cd4a8fc4 | 1083 | return (ctf_set_errno (ofp, ECTF_NOTENUM)); |
47d546f4 NA |
1084 | |
1085 | if (vlen == CTF_MAX_VLEN) | |
cd4a8fc4 | 1086 | return (ctf_set_errno (ofp, ECTF_DTFULL)); |
47d546f4 | 1087 | |
77d724a7 NA |
1088 | old_vlen = dtd->dtd_vlen; |
1089 | if (ctf_grow_vlen (fp, dtd, sizeof (ctf_enum_t) * (vlen + 1)) < 0) | |
1090 | return -1; /* errno is set for us. */ | |
1091 | en = (ctf_enum_t *) dtd->dtd_vlen; | |
1092 | ||
1093 | if (dtd->dtd_vlen != old_vlen) | |
47d546f4 | 1094 | { |
77d724a7 | 1095 | ptrdiff_t move = (signed char *) dtd->dtd_vlen - (signed char *) old_vlen; |
47d546f4 | 1096 | |
77d724a7 | 1097 | /* Remove pending refs in the old vlen region and reapply them. */ |
47d546f4 | 1098 | |
77d724a7 NA |
1099 | for (i = 0; i < vlen; i++) |
1100 | ctf_str_move_pending (fp, &en[i].cte_name, move); | |
47d546f4 NA |
1101 | } |
1102 | ||
77d724a7 NA |
1103 | for (i = 0; i < vlen; i++) |
1104 | if (strcmp (ctf_strptr (fp, en[i].cte_name), name) == 0) | |
cd4a8fc4 | 1105 | return (ctf_set_errno (ofp, ECTF_DUPLICATE)); |
77d724a7 NA |
1106 | |
1107 | en[i].cte_name = ctf_str_add_pending (fp, name, &en[i].cte_name); | |
1108 | en[i].cte_value = value; | |
1109 | ||
1110 | if (en[i].cte_name == 0 && name != NULL && name[0] != '\0') | |
cd4a8fc4 | 1111 | return (ctf_set_errno (ofp, ctf_errno (fp))); |
47d546f4 NA |
1112 | |
1113 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, root, vlen + 1); | |
47d546f4 | 1114 | |
47d546f4 NA |
1115 | fp->ctf_flags |= LCTF_DIRTY; |
1116 | ||
1117 | return 0; | |
1118 | } | |
1119 | ||
1120 | int | |
139633c3 | 1121 | ctf_add_member_offset (ctf_dict_t *fp, ctf_id_t souid, const char *name, |
47d546f4 NA |
1122 | ctf_id_t type, unsigned long bit_offset) |
1123 | { | |
cd4a8fc4 | 1124 | ctf_dict_t *ofp = fp; |
47d546f4 | 1125 | ctf_dtdef_t *dtd = ctf_dtd_lookup (fp, souid); |
47d546f4 NA |
1126 | |
1127 | ssize_t msize, malign, ssize; | |
1128 | uint32_t kind, vlen, root; | |
08c428af | 1129 | size_t i; |
ffeece6a | 1130 | int is_incomplete = 0; |
08c428af NA |
1131 | unsigned char *old_vlen; |
1132 | ctf_lmember_t *memb; | |
47d546f4 | 1133 | |
cd4a8fc4 NA |
1134 | if ((fp->ctf_flags & LCTF_CHILD) && LCTF_TYPE_ISPARENT (fp, souid)) |
1135 | { | |
1136 | /* Adding a child type to a parent, even via the child, is prohibited. | |
1137 | Otherwise, climb to the parent and do all work there. */ | |
1138 | ||
1139 | if (LCTF_TYPE_ISCHILD (fp, type)) | |
1140 | return (ctf_set_errno (ofp, ECTF_BADID)); | |
1141 | ||
1142 | fp = fp->ctf_parent; | |
1143 | } | |
1144 | ||
1145 | if (!(ofp->ctf_flags & LCTF_RDWR)) | |
1146 | return (ctf_set_errno (ofp, ECTF_RDONLY)); | |
1147 | ||
47d546f4 | 1148 | if (!(fp->ctf_flags & LCTF_RDWR)) |
cd4a8fc4 | 1149 | return (ctf_set_errno (ofp, ECTF_RDONLY)); |
47d546f4 NA |
1150 | |
1151 | if (dtd == NULL) | |
cd4a8fc4 | 1152 | return (ctf_set_errno (ofp, ECTF_BADID)); |
47d546f4 | 1153 | |
ab769488 NA |
1154 | if (name != NULL && name[0] == '\0') |
1155 | name = NULL; | |
1156 | ||
47d546f4 NA |
1157 | kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); |
1158 | root = LCTF_INFO_ISROOT (fp, dtd->dtd_data.ctt_info); | |
1159 | vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info); | |
1160 | ||
1161 | if (kind != CTF_K_STRUCT && kind != CTF_K_UNION) | |
cd4a8fc4 | 1162 | return (ctf_set_errno (ofp, ECTF_NOTSOU)); |
47d546f4 NA |
1163 | |
1164 | if (vlen == CTF_MAX_VLEN) | |
cd4a8fc4 | 1165 | return (ctf_set_errno (ofp, ECTF_DTFULL)); |
47d546f4 | 1166 | |
08c428af NA |
1167 | old_vlen = dtd->dtd_vlen; |
1168 | if (ctf_grow_vlen (fp, dtd, sizeof (ctf_lmember_t) * (vlen + 1)) < 0) | |
cd4a8fc4 | 1169 | return (ctf_set_errno (ofp, ctf_errno (fp))); |
08c428af NA |
1170 | memb = (ctf_lmember_t *) dtd->dtd_vlen; |
1171 | ||
1172 | if (dtd->dtd_vlen != old_vlen) | |
1173 | { | |
1174 | ptrdiff_t move = (signed char *) dtd->dtd_vlen - (signed char *) old_vlen; | |
1175 | ||
1176 | /* Remove pending refs in the old vlen region and reapply them. */ | |
1177 | ||
1178 | for (i = 0; i < vlen; i++) | |
1179 | ctf_str_move_pending (fp, &memb[i].ctlm_name, move); | |
1180 | } | |
1181 | ||
47d546f4 NA |
1182 | if (name != NULL) |
1183 | { | |
08c428af NA |
1184 | for (i = 0; i < vlen; i++) |
1185 | if (strcmp (ctf_strptr (fp, memb[i].ctlm_name), name) == 0) | |
cd4a8fc4 | 1186 | return (ctf_set_errno (ofp, ECTF_DUPLICATE)); |
47d546f4 NA |
1187 | } |
1188 | ||
a0486bac JM |
1189 | if ((msize = ctf_type_size (fp, type)) < 0 || |
1190 | (malign = ctf_type_align (fp, type)) < 0) | |
2361f1c8 NA |
1191 | { |
1192 | /* The unimplemented type, and any type that resolves to it, has no size | |
1193 | and no alignment: it can correspond to any number of compiler-inserted | |
ffeece6a NA |
1194 | types. We allow incomplete types through since they are routinely |
1195 | added to the ends of structures, and can even be added elsewhere in | |
1196 | structures by the deduplicator. They are assumed to be zero-size with | |
1197 | no alignment: this is often wrong, but problems can be avoided in this | |
1198 | case by explicitly specifying the size of the structure via the _sized | |
1199 | functions. The deduplicator always does this. */ | |
1200 | ||
1201 | msize = 0; | |
1202 | malign = 0; | |
2361f1c8 | 1203 | if (ctf_errno (fp) == ECTF_NONREPRESENTABLE) |
ffeece6a NA |
1204 | ctf_set_errno (fp, 0); |
1205 | else if (ctf_errno (fp) == ECTF_INCOMPLETE) | |
1206 | is_incomplete = 1; | |
2361f1c8 NA |
1207 | else |
1208 | return -1; /* errno is set for us. */ | |
1209 | } | |
47d546f4 | 1210 | |
08c428af NA |
1211 | memb[vlen].ctlm_name = ctf_str_add_pending (fp, name, &memb[vlen].ctlm_name); |
1212 | memb[vlen].ctlm_type = type; | |
1213 | if (memb[vlen].ctlm_name == 0 && name != NULL && name[0] != '\0') | |
1214 | return -1; /* errno is set for us. */ | |
47d546f4 NA |
1215 | |
1216 | if (kind == CTF_K_STRUCT && vlen != 0) | |
1217 | { | |
1218 | if (bit_offset == (unsigned long) - 1) | |
1219 | { | |
1220 | /* Natural alignment. */ | |
1221 | ||
08c428af NA |
1222 | ctf_id_t ltype = ctf_type_resolve (fp, memb[vlen - 1].ctlm_type); |
1223 | size_t off = CTF_LMEM_OFFSET(&memb[vlen - 1]); | |
47d546f4 NA |
1224 | |
1225 | ctf_encoding_t linfo; | |
1226 | ssize_t lsize; | |
1227 | ||
2361f1c8 NA |
1228 | /* Propagate any error from ctf_type_resolve. If the last member was |
1229 | of unimplemented type, this may be -ECTF_NONREPRESENTABLE: we | |
1230 | cannot insert right after such a member without explicit offset | |
1231 | specification, because its alignment and size is not known. */ | |
1232 | if (ltype == CTF_ERR) | |
08c428af | 1233 | return -1; /* errno is set for us. */ |
2361f1c8 | 1234 | |
ffeece6a NA |
1235 | if (is_incomplete) |
1236 | { | |
cd4a8fc4 | 1237 | ctf_err_warn (ofp, 1, ECTF_INCOMPLETE, |
ffeece6a NA |
1238 | _("ctf_add_member_offset: cannot add member %s of " |
1239 | "incomplete type %lx to struct %lx without " | |
1240 | "specifying explicit offset\n"), | |
1241 | name ? name : _("(unnamed member)"), type, souid); | |
cd4a8fc4 | 1242 | return (ctf_set_errno (ofp, ECTF_INCOMPLETE)); |
ffeece6a NA |
1243 | } |
1244 | ||
a0486bac | 1245 | if (ctf_type_encoding (fp, ltype, &linfo) == 0) |
47d546f4 | 1246 | off += linfo.cte_bits; |
a0486bac | 1247 | else if ((lsize = ctf_type_size (fp, ltype)) > 0) |
76fad999 | 1248 | off += lsize * CHAR_BIT; |
ffeece6a NA |
1249 | else if (lsize == -1 && ctf_errno (fp) == ECTF_INCOMPLETE) |
1250 | { | |
08c428af NA |
1251 | const char *lname = ctf_strraw (fp, memb[vlen - 1].ctlm_name); |
1252 | ||
cd4a8fc4 | 1253 | ctf_err_warn (ofp, 1, ECTF_INCOMPLETE, |
ffeece6a NA |
1254 | _("ctf_add_member_offset: cannot add member %s of " |
1255 | "type %lx to struct %lx without specifying " | |
1256 | "explicit offset after member %s of type %lx, " | |
1257 | "which is an incomplete type\n"), | |
1258 | name ? name : _("(unnamed member)"), type, souid, | |
08c428af | 1259 | lname ? lname : _("(unnamed member)"), ltype); |
cd4a8fc4 | 1260 | return (ctf_set_errno (ofp, ECTF_INCOMPLETE)); |
ffeece6a | 1261 | } |
47d546f4 NA |
1262 | |
1263 | /* Round up the offset of the end of the last member to | |
1264 | the next byte boundary, convert 'off' to bytes, and | |
1265 | then round it up again to the next multiple of the | |
1266 | alignment required by the new member. Finally, | |
1267 | convert back to bits and store the result in | |
1268 | dmd_offset. Technically we could do more efficient | |
1269 | packing if the new member is a bit-field, but we're | |
1270 | the "compiler" and ANSI says we can do as we choose. */ | |
1271 | ||
76fad999 | 1272 | off = roundup (off, CHAR_BIT) / CHAR_BIT; |
47d546f4 | 1273 | off = roundup (off, MAX (malign, 1)); |
08c428af NA |
1274 | memb[vlen].ctlm_offsethi = CTF_OFFSET_TO_LMEMHI (off * CHAR_BIT); |
1275 | memb[vlen].ctlm_offsetlo = CTF_OFFSET_TO_LMEMLO (off * CHAR_BIT); | |
47d546f4 NA |
1276 | ssize = off + msize; |
1277 | } | |
1278 | else | |
1279 | { | |
1280 | /* Specified offset in bits. */ | |
1281 | ||
08c428af NA |
1282 | memb[vlen].ctlm_offsethi = CTF_OFFSET_TO_LMEMHI (bit_offset); |
1283 | memb[vlen].ctlm_offsetlo = CTF_OFFSET_TO_LMEMLO (bit_offset); | |
47d546f4 | 1284 | ssize = ctf_get_ctt_size (fp, &dtd->dtd_data, NULL, NULL); |
76fad999 | 1285 | ssize = MAX (ssize, ((signed) bit_offset / CHAR_BIT) + msize); |
47d546f4 NA |
1286 | } |
1287 | } | |
1288 | else | |
1289 | { | |
08c428af NA |
1290 | memb[vlen].ctlm_offsethi = 0; |
1291 | memb[vlen].ctlm_offsetlo = 0; | |
47d546f4 NA |
1292 | ssize = ctf_get_ctt_size (fp, &dtd->dtd_data, NULL, NULL); |
1293 | ssize = MAX (ssize, msize); | |
1294 | } | |
1295 | ||
08c428af NA |
1296 | dtd->dtd_data.ctt_size = CTF_LSIZE_SENT; |
1297 | dtd->dtd_data.ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI (ssize); | |
1298 | dtd->dtd_data.ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO (ssize); | |
47d546f4 | 1299 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, root, vlen + 1); |
47d546f4 | 1300 | |
47d546f4 NA |
1301 | fp->ctf_flags |= LCTF_DIRTY; |
1302 | return 0; | |
1303 | } | |
1304 | ||
1305 | int | |
139633c3 | 1306 | ctf_add_member_encoded (ctf_dict_t *fp, ctf_id_t souid, const char *name, |
47d546f4 NA |
1307 | ctf_id_t type, unsigned long bit_offset, |
1308 | const ctf_encoding_t encoding) | |
1309 | { | |
1310 | ctf_dtdef_t *dtd = ctf_dtd_lookup (fp, type); | |
cd4a8fc4 | 1311 | int kind; |
47d546f4 NA |
1312 | int otype = type; |
1313 | ||
cd4a8fc4 NA |
1314 | if (dtd == NULL) |
1315 | return (ctf_set_errno (fp, ECTF_BADID)); | |
1316 | ||
1317 | kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); | |
1318 | ||
47d546f4 NA |
1319 | if ((kind != CTF_K_INTEGER) && (kind != CTF_K_FLOAT) && (kind != CTF_K_ENUM)) |
1320 | return (ctf_set_errno (fp, ECTF_NOTINTFP)); | |
1321 | ||
1322 | if ((type = ctf_add_slice (fp, CTF_ADD_NONROOT, otype, &encoding)) == CTF_ERR) | |
a0486bac | 1323 | return -1; /* errno is set for us. */ |
47d546f4 NA |
1324 | |
1325 | return ctf_add_member_offset (fp, souid, name, type, bit_offset); | |
1326 | } | |
1327 | ||
1328 | int | |
139633c3 | 1329 | ctf_add_member (ctf_dict_t *fp, ctf_id_t souid, const char *name, |
47d546f4 NA |
1330 | ctf_id_t type) |
1331 | { | |
1332 | return ctf_add_member_offset (fp, souid, name, type, (unsigned long) - 1); | |
1333 | } | |
1334 | ||
1335 | int | |
139633c3 | 1336 | ctf_add_variable (ctf_dict_t *fp, const char *name, ctf_id_t ref) |
47d546f4 NA |
1337 | { |
1338 | ctf_dvdef_t *dvd; | |
139633c3 | 1339 | ctf_dict_t *tmp = fp; |
47d546f4 NA |
1340 | |
1341 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
1342 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
1343 | ||
1344 | if (ctf_dvd_lookup (fp, name) != NULL) | |
1345 | return (ctf_set_errno (fp, ECTF_DUPLICATE)); | |
1346 | ||
1347 | if (ctf_lookup_by_id (&tmp, ref) == NULL) | |
a0486bac | 1348 | return -1; /* errno is set for us. */ |
47d546f4 | 1349 | |
791915db NA |
1350 | /* Make sure this type is representable. */ |
1351 | if ((ctf_type_resolve (fp, ref) == CTF_ERR) | |
1352 | && (ctf_errno (fp) == ECTF_NONREPRESENTABLE)) | |
1353 | return -1; | |
1354 | ||
de07e349 | 1355 | if ((dvd = malloc (sizeof (ctf_dvdef_t))) == NULL) |
47d546f4 NA |
1356 | return (ctf_set_errno (fp, EAGAIN)); |
1357 | ||
de07e349 | 1358 | if (name != NULL && (dvd->dvd_name = strdup (name)) == NULL) |
47d546f4 | 1359 | { |
de07e349 | 1360 | free (dvd); |
47d546f4 NA |
1361 | return (ctf_set_errno (fp, EAGAIN)); |
1362 | } | |
1363 | dvd->dvd_type = ref; | |
1364 | dvd->dvd_snapshots = fp->ctf_snapshots; | |
1365 | ||
24865428 NA |
1366 | if (ctf_dvd_insert (fp, dvd) < 0) |
1367 | { | |
de07e349 NA |
1368 | free (dvd->dvd_name); |
1369 | free (dvd); | |
24865428 NA |
1370 | return -1; /* errno is set for us. */ |
1371 | } | |
47d546f4 | 1372 | |
47d546f4 NA |
1373 | fp->ctf_flags |= LCTF_DIRTY; |
1374 | return 0; | |
1375 | } | |
1376 | ||
1136c379 NA |
1377 | int |
1378 | ctf_add_funcobjt_sym (ctf_dict_t *fp, int is_function, const char *name, ctf_id_t id) | |
1379 | { | |
1380 | ctf_dict_t *tmp = fp; | |
1381 | char *dupname; | |
1382 | ctf_dynhash_t *h = is_function ? fp->ctf_funchash : fp->ctf_objthash; | |
1383 | ||
1384 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
1385 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
1386 | ||
1387 | if (ctf_dynhash_lookup (fp->ctf_objthash, name) != NULL || | |
1388 | ctf_dynhash_lookup (fp->ctf_funchash, name) != NULL) | |
1389 | return (ctf_set_errno (fp, ECTF_DUPLICATE)); | |
1390 | ||
1391 | if (ctf_lookup_by_id (&tmp, id) == NULL) | |
1392 | return -1; /* errno is set for us. */ | |
1393 | ||
1394 | if (is_function && ctf_type_kind (fp, id) != CTF_K_FUNCTION) | |
1395 | return (ctf_set_errno (fp, ECTF_NOTFUNC)); | |
1396 | ||
1397 | if ((dupname = strdup (name)) == NULL) | |
1398 | return (ctf_set_errno (fp, ENOMEM)); | |
1399 | ||
1400 | if (ctf_dynhash_insert (h, dupname, (void *) (uintptr_t) id) < 0) | |
1401 | { | |
1402 | free (dupname); | |
1403 | return (ctf_set_errno (fp, ENOMEM)); | |
1404 | } | |
1405 | return 0; | |
1406 | } | |
1407 | ||
1408 | int | |
1409 | ctf_add_objt_sym (ctf_dict_t *fp, const char *name, ctf_id_t id) | |
1410 | { | |
1411 | return (ctf_add_funcobjt_sym (fp, 0, name, id)); | |
1412 | } | |
1413 | ||
1414 | int | |
1415 | ctf_add_func_sym (ctf_dict_t *fp, const char *name, ctf_id_t id) | |
1416 | { | |
1417 | return (ctf_add_funcobjt_sym (fp, 1, name, id)); | |
1418 | } | |
1419 | ||
926c9e76 NA |
1420 | typedef struct ctf_bundle |
1421 | { | |
139633c3 | 1422 | ctf_dict_t *ctb_dict; /* CTF dict handle. */ |
926c9e76 NA |
1423 | ctf_id_t ctb_type; /* CTF type identifier. */ |
1424 | ctf_dtdef_t *ctb_dtd; /* CTF dynamic type definition (if any). */ | |
1425 | } ctf_bundle_t; | |
1426 | ||
c499eb68 NA |
1427 | static int |
1428 | enumcmp (const char *name, int value, void *arg) | |
1429 | { | |
1430 | ctf_bundle_t *ctb = arg; | |
1431 | int bvalue; | |
1432 | ||
139633c3 | 1433 | if (ctf_enum_value (ctb->ctb_dict, ctb->ctb_type, name, &bvalue) < 0) |
c499eb68 | 1434 | { |
139633c3 | 1435 | ctf_err_warn (ctb->ctb_dict, 0, 0, |
926c9e76 | 1436 | _("conflict due to enum %s iteration error"), name); |
c499eb68 NA |
1437 | return 1; |
1438 | } | |
1439 | if (value != bvalue) | |
1440 | { | |
139633c3 | 1441 | ctf_err_warn (ctb->ctb_dict, 1, ECTF_CONFLICT, |
926c9e76 NA |
1442 | _("conflict due to enum value change: %i versus %i"), |
1443 | value, bvalue); | |
c499eb68 NA |
1444 | return 1; |
1445 | } | |
1446 | return 0; | |
1447 | } | |
1448 | ||
1449 | static int | |
1450 | enumadd (const char *name, int value, void *arg) | |
1451 | { | |
1452 | ctf_bundle_t *ctb = arg; | |
1453 | ||
139633c3 | 1454 | return (ctf_add_enumerator (ctb->ctb_dict, ctb->ctb_type, |
a0486bac | 1455 | name, value) < 0); |
c499eb68 NA |
1456 | } |
1457 | ||
1458 | static int | |
1459 | membcmp (const char *name, ctf_id_t type _libctf_unused_, unsigned long offset, | |
1460 | void *arg) | |
1461 | { | |
1462 | ctf_bundle_t *ctb = arg; | |
1463 | ctf_membinfo_t ctm; | |
1464 | ||
f47ca311 NA |
1465 | /* Don't check nameless members (e.g. anonymous structs/unions) against each |
1466 | other. */ | |
1467 | if (name[0] == 0) | |
1468 | return 0; | |
1469 | ||
139633c3 | 1470 | if (ctf_member_info (ctb->ctb_dict, ctb->ctb_type, name, &ctm) < 0) |
c499eb68 | 1471 | { |
139633c3 | 1472 | ctf_err_warn (ctb->ctb_dict, 0, 0, |
926c9e76 NA |
1473 | _("conflict due to struct member %s iteration error"), |
1474 | name); | |
c499eb68 NA |
1475 | return 1; |
1476 | } | |
1477 | if (ctm.ctm_offset != offset) | |
1478 | { | |
139633c3 | 1479 | ctf_err_warn (ctb->ctb_dict, 1, ECTF_CONFLICT, |
926c9e76 NA |
1480 | _("conflict due to struct member %s offset change: " |
1481 | "%lx versus %lx"), | |
1482 | name, ctm.ctm_offset, offset); | |
c499eb68 NA |
1483 | return 1; |
1484 | } | |
1485 | return 0; | |
1486 | } | |
1487 | ||
f5060e56 NA |
1488 | /* Record the correspondence between a source and ctf_add_type()-added |
1489 | destination type: both types are translated into parent type IDs if need be, | |
1490 | so they relate to the actual dictionary they are in. Outside controlled | |
1491 | circumstances (like linking) it is probably not useful to do more than | |
1492 | compare these pointers, since there is nothing stopping the user closing the | |
1493 | source dict whenever they want to. | |
1494 | ||
1495 | Our OOM handling here is just to not do anything, because this is called deep | |
1496 | enough in the call stack that doing anything useful is painfully difficult: | |
1497 | the worst consequence if we do OOM is a bit of type duplication anyway. */ | |
1498 | ||
1499 | static void | |
1500 | ctf_add_type_mapping (ctf_dict_t *src_fp, ctf_id_t src_type, | |
1501 | ctf_dict_t *dst_fp, ctf_id_t dst_type) | |
1502 | { | |
1503 | if (LCTF_TYPE_ISPARENT (src_fp, src_type) && src_fp->ctf_parent) | |
1504 | src_fp = src_fp->ctf_parent; | |
1505 | ||
1506 | src_type = LCTF_TYPE_TO_INDEX(src_fp, src_type); | |
1507 | ||
1508 | if (LCTF_TYPE_ISPARENT (dst_fp, dst_type) && dst_fp->ctf_parent) | |
1509 | dst_fp = dst_fp->ctf_parent; | |
1510 | ||
1511 | dst_type = LCTF_TYPE_TO_INDEX(dst_fp, dst_type); | |
1512 | ||
1513 | if (dst_fp->ctf_link_type_mapping == NULL) | |
1514 | { | |
1515 | ctf_hash_fun f = ctf_hash_type_key; | |
1516 | ctf_hash_eq_fun e = ctf_hash_eq_type_key; | |
1517 | ||
1518 | if ((dst_fp->ctf_link_type_mapping = ctf_dynhash_create (f, e, free, | |
1519 | NULL)) == NULL) | |
1520 | return; | |
1521 | } | |
1522 | ||
1523 | ctf_link_type_key_t *key; | |
1524 | key = calloc (1, sizeof (struct ctf_link_type_key)); | |
1525 | if (!key) | |
1526 | return; | |
1527 | ||
1528 | key->cltk_fp = src_fp; | |
1529 | key->cltk_idx = src_type; | |
1530 | ||
1531 | /* No OOM checking needed, because if this doesn't work the worst we'll do is | |
1532 | add a few more duplicate types (which will probably run out of memory | |
1533 | anyway). */ | |
1534 | ctf_dynhash_insert (dst_fp->ctf_link_type_mapping, key, | |
1535 | (void *) (uintptr_t) dst_type); | |
1536 | } | |
1537 | ||
1538 | /* Look up a type mapping: return 0 if none. The DST_FP is modified to point to | |
1539 | the parent if need be. The ID returned is from the dst_fp's perspective. */ | |
1540 | static ctf_id_t | |
1541 | ctf_type_mapping (ctf_dict_t *src_fp, ctf_id_t src_type, ctf_dict_t **dst_fp) | |
1542 | { | |
1543 | ctf_link_type_key_t key; | |
1544 | ctf_dict_t *target_fp = *dst_fp; | |
1545 | ctf_id_t dst_type = 0; | |
1546 | ||
1547 | if (LCTF_TYPE_ISPARENT (src_fp, src_type) && src_fp->ctf_parent) | |
1548 | src_fp = src_fp->ctf_parent; | |
1549 | ||
1550 | src_type = LCTF_TYPE_TO_INDEX(src_fp, src_type); | |
1551 | key.cltk_fp = src_fp; | |
1552 | key.cltk_idx = src_type; | |
1553 | ||
1554 | if (target_fp->ctf_link_type_mapping) | |
1555 | dst_type = (uintptr_t) ctf_dynhash_lookup (target_fp->ctf_link_type_mapping, | |
1556 | &key); | |
1557 | ||
1558 | if (dst_type != 0) | |
1559 | { | |
1560 | dst_type = LCTF_INDEX_TO_TYPE (target_fp, dst_type, | |
1561 | target_fp->ctf_parent != NULL); | |
1562 | *dst_fp = target_fp; | |
1563 | return dst_type; | |
1564 | } | |
1565 | ||
1566 | if (target_fp->ctf_parent) | |
1567 | target_fp = target_fp->ctf_parent; | |
1568 | else | |
1569 | return 0; | |
1570 | ||
1571 | if (target_fp->ctf_link_type_mapping) | |
1572 | dst_type = (uintptr_t) ctf_dynhash_lookup (target_fp->ctf_link_type_mapping, | |
1573 | &key); | |
1574 | ||
1575 | if (dst_type) | |
1576 | dst_type = LCTF_INDEX_TO_TYPE (target_fp, dst_type, | |
1577 | target_fp->ctf_parent != NULL); | |
1578 | ||
1579 | *dst_fp = target_fp; | |
1580 | return dst_type; | |
1581 | } | |
1582 | ||
139633c3 NA |
1583 | /* The ctf_add_type routine is used to copy a type from a source CTF dictionary |
1584 | to a dynamic destination dictionary. This routine operates recursively by | |
c499eb68 | 1585 | following the source type's links and embedded member types. If the |
139633c3 NA |
1586 | destination dict already contains a named type which has the same attributes, |
1587 | then we succeed and return this type but no changes occur. */ | |
99dc3ebd | 1588 | static ctf_id_t |
139633c3 NA |
1589 | ctf_add_type_internal (ctf_dict_t *dst_fp, ctf_dict_t *src_fp, ctf_id_t src_type, |
1590 | ctf_dict_t *proc_tracking_fp) | |
c499eb68 NA |
1591 | { |
1592 | ctf_id_t dst_type = CTF_ERR; | |
1593 | uint32_t dst_kind = CTF_K_UNKNOWN; | |
139633c3 | 1594 | ctf_dict_t *tmp_fp = dst_fp; |
c499eb68 NA |
1595 | ctf_id_t tmp; |
1596 | ||
1597 | const char *name; | |
5de9eada | 1598 | uint32_t kind, forward_kind, flag, vlen; |
c499eb68 NA |
1599 | |
1600 | const ctf_type_t *src_tp, *dst_tp; | |
1601 | ctf_bundle_t src, dst; | |
1602 | ctf_encoding_t src_en, dst_en; | |
1603 | ctf_arinfo_t src_ar, dst_ar; | |
1604 | ||
c499eb68 | 1605 | ctf_funcinfo_t ctc; |
c499eb68 | 1606 | |
886453cb | 1607 | ctf_id_t orig_src_type = src_type; |
c499eb68 NA |
1608 | |
1609 | if (!(dst_fp->ctf_flags & LCTF_RDWR)) | |
998a4f58 | 1610 | return (ctf_set_typed_errno (dst_fp, ECTF_RDONLY)); |
c499eb68 NA |
1611 | |
1612 | if ((src_tp = ctf_lookup_by_id (&src_fp, src_type)) == NULL) | |
998a4f58 | 1613 | return (ctf_set_typed_errno (dst_fp, ctf_errno (src_fp))); |
c499eb68 | 1614 | |
791915db NA |
1615 | if ((ctf_type_resolve (src_fp, src_type) == CTF_ERR) |
1616 | && (ctf_errno (src_fp) == ECTF_NONREPRESENTABLE)) | |
998a4f58 | 1617 | return (ctf_set_typed_errno (dst_fp, ECTF_NONREPRESENTABLE)); |
791915db | 1618 | |
c499eb68 NA |
1619 | name = ctf_strptr (src_fp, src_tp->ctt_name); |
1620 | kind = LCTF_INFO_KIND (src_fp, src_tp->ctt_info); | |
1621 | flag = LCTF_INFO_ISROOT (src_fp, src_tp->ctt_info); | |
1622 | vlen = LCTF_INFO_VLEN (src_fp, src_tp->ctt_info); | |
1623 | ||
99dc3ebd NA |
1624 | /* If this is a type we are currently in the middle of adding, hand it |
1625 | straight back. (This lets us handle self-referential structures without | |
1626 | considering forwards and empty structures the same as their completed | |
1627 | forms.) */ | |
1628 | ||
1629 | tmp = ctf_type_mapping (src_fp, src_type, &tmp_fp); | |
1630 | ||
1631 | if (tmp != 0) | |
1632 | { | |
1633 | if (ctf_dynhash_lookup (proc_tracking_fp->ctf_add_processing, | |
1634 | (void *) (uintptr_t) src_type)) | |
1635 | return tmp; | |
1636 | ||
139633c3 NA |
1637 | /* If this type has already been added from this dictionary, and is the |
1638 | same kind and (if a struct or union) has the same number of members, | |
1639 | hand it straight back. */ | |
99dc3ebd | 1640 | |
d04a47ac | 1641 | if (ctf_type_kind_unsliced (tmp_fp, tmp) == (int) kind) |
99dc3ebd | 1642 | { |
d04a47ac NA |
1643 | if (kind == CTF_K_STRUCT || kind == CTF_K_UNION |
1644 | || kind == CTF_K_ENUM) | |
1645 | { | |
1646 | if ((dst_tp = ctf_lookup_by_id (&tmp_fp, dst_type)) != NULL) | |
1647 | if (vlen == LCTF_INFO_VLEN (tmp_fp, dst_tp->ctt_info)) | |
1648 | return tmp; | |
1649 | } | |
1650 | else | |
1651 | return tmp; | |
99dc3ebd NA |
1652 | } |
1653 | } | |
1654 | ||
5de9eada NA |
1655 | forward_kind = kind; |
1656 | if (kind == CTF_K_FORWARD) | |
1657 | forward_kind = src_tp->ctt_type; | |
1658 | ||
139633c3 NA |
1659 | /* If the source type has a name and is a root type (visible at the top-level |
1660 | scope), lookup the name in the destination dictionary and verify that it is | |
1661 | of the same kind before we do anything else. */ | |
c499eb68 NA |
1662 | |
1663 | if ((flag & CTF_ADD_ROOT) && name[0] != '\0' | |
676c3ecb | 1664 | && (tmp = ctf_lookup_by_rawname (dst_fp, forward_kind, name)) != 0) |
c499eb68 NA |
1665 | { |
1666 | dst_type = tmp; | |
1667 | dst_kind = ctf_type_kind_unsliced (dst_fp, dst_type); | |
1668 | } | |
1669 | ||
1670 | /* If an identically named dst_type exists, fail with ECTF_CONFLICT | |
1671 | unless dst_type is a forward declaration and src_type is a struct, | |
5de9eada | 1672 | union, or enum (i.e. the definition of the previous forward decl). |
c499eb68 | 1673 | |
5de9eada NA |
1674 | We also allow addition in the opposite order (addition of a forward when a |
1675 | struct, union, or enum already exists), which is a NOP and returns the | |
1676 | already-present struct, union, or enum. */ | |
1677 | ||
1678 | if (dst_type != CTF_ERR && dst_kind != kind) | |
c499eb68 | 1679 | { |
5de9eada NA |
1680 | if (kind == CTF_K_FORWARD |
1681 | && (dst_kind == CTF_K_ENUM || dst_kind == CTF_K_STRUCT | |
1682 | || dst_kind == CTF_K_UNION)) | |
1683 | { | |
1684 | ctf_add_type_mapping (src_fp, src_type, dst_fp, dst_type); | |
1685 | return dst_type; | |
1686 | } | |
1687 | ||
1688 | if (dst_kind != CTF_K_FORWARD | |
1689 | || (kind != CTF_K_ENUM && kind != CTF_K_STRUCT | |
1690 | && kind != CTF_K_UNION)) | |
1691 | { | |
926c9e76 | 1692 | ctf_err_warn (dst_fp, 1, ECTF_CONFLICT, |
139633c3 | 1693 | _("ctf_add_type: conflict for type %s: " |
926c9e76 NA |
1694 | "kinds differ, new: %i; old (ID %lx): %i"), |
1695 | name, kind, dst_type, dst_kind); | |
998a4f58 | 1696 | return (ctf_set_typed_errno (dst_fp, ECTF_CONFLICT)); |
5de9eada | 1697 | } |
c499eb68 NA |
1698 | } |
1699 | ||
1700 | /* We take special action for an integer, float, or slice since it is | |
1701 | described not only by its name but also its encoding. For integers, | |
1702 | bit-fields exploit this degeneracy. */ | |
1703 | ||
1704 | if (kind == CTF_K_INTEGER || kind == CTF_K_FLOAT || kind == CTF_K_SLICE) | |
1705 | { | |
1706 | if (ctf_type_encoding (src_fp, src_type, &src_en) != 0) | |
998a4f58 | 1707 | return (ctf_set_typed_errno (dst_fp, ctf_errno (src_fp))); |
c499eb68 NA |
1708 | |
1709 | if (dst_type != CTF_ERR) | |
1710 | { | |
139633c3 | 1711 | ctf_dict_t *fp = dst_fp; |
c499eb68 NA |
1712 | |
1713 | if ((dst_tp = ctf_lookup_by_id (&fp, dst_type)) == NULL) | |
1714 | return CTF_ERR; | |
1715 | ||
99dc3ebd NA |
1716 | if (ctf_type_encoding (dst_fp, dst_type, &dst_en) != 0) |
1717 | return CTF_ERR; /* errno set for us. */ | |
1718 | ||
c499eb68 NA |
1719 | if (LCTF_INFO_ISROOT (fp, dst_tp->ctt_info) & CTF_ADD_ROOT) |
1720 | { | |
1721 | /* The type that we found in the hash is also root-visible. If | |
1722 | the two types match then use the existing one; otherwise, | |
1723 | declare a conflict. Note: slices are not certain to match | |
1724 | even if there is no conflict: we must check the contained type | |
1725 | too. */ | |
1726 | ||
c499eb68 NA |
1727 | if (memcmp (&src_en, &dst_en, sizeof (ctf_encoding_t)) == 0) |
1728 | { | |
1729 | if (kind != CTF_K_SLICE) | |
886453cb NA |
1730 | { |
1731 | ctf_add_type_mapping (src_fp, src_type, dst_fp, dst_type); | |
1732 | return dst_type; | |
1733 | } | |
c499eb68 NA |
1734 | } |
1735 | else | |
1736 | { | |
998a4f58 | 1737 | return (ctf_set_typed_errno (dst_fp, ECTF_CONFLICT)); |
c499eb68 NA |
1738 | } |
1739 | } | |
1740 | else | |
1741 | { | |
99dc3ebd NA |
1742 | /* We found a non-root-visible type in the hash. If its encoding |
1743 | is the same, we can reuse it, unless it is a slice. */ | |
c499eb68 | 1744 | |
99dc3ebd | 1745 | if (memcmp (&src_en, &dst_en, sizeof (ctf_encoding_t)) == 0) |
c499eb68 NA |
1746 | { |
1747 | if (kind != CTF_K_SLICE) | |
886453cb | 1748 | { |
99dc3ebd NA |
1749 | ctf_add_type_mapping (src_fp, src_type, dst_fp, dst_type); |
1750 | return dst_type; | |
886453cb | 1751 | } |
c499eb68 | 1752 | } |
c499eb68 NA |
1753 | } |
1754 | } | |
1755 | } | |
1756 | ||
139633c3 | 1757 | src.ctb_dict = src_fp; |
c499eb68 NA |
1758 | src.ctb_type = src_type; |
1759 | src.ctb_dtd = NULL; | |
1760 | ||
139633c3 | 1761 | dst.ctb_dict = dst_fp; |
c499eb68 NA |
1762 | dst.ctb_type = dst_type; |
1763 | dst.ctb_dtd = NULL; | |
1764 | ||
99dc3ebd NA |
1765 | /* Now perform kind-specific processing. If dst_type is CTF_ERR, then we add |
1766 | a new type with the same properties as src_type to dst_fp. If dst_type is | |
1767 | not CTF_ERR, then we verify that dst_type has the same attributes as | |
1768 | src_type. We recurse for embedded references. Before we start, we note | |
1769 | that we are processing this type, to prevent infinite recursion: we do not | |
1770 | re-process any type that appears in this list. The list is emptied | |
1771 | wholesale at the end of processing everything in this recursive stack. */ | |
1772 | ||
1773 | if (ctf_dynhash_insert (proc_tracking_fp->ctf_add_processing, | |
1774 | (void *) (uintptr_t) src_type, (void *) 1) < 0) | |
998a4f58 | 1775 | return ctf_set_typed_errno (dst_fp, ENOMEM); |
99dc3ebd | 1776 | |
c499eb68 NA |
1777 | switch (kind) |
1778 | { | |
1779 | case CTF_K_INTEGER: | |
1780 | /* If we found a match we will have either returned it or declared a | |
1781 | conflict. */ | |
1782 | dst_type = ctf_add_integer (dst_fp, flag, name, &src_en); | |
1783 | break; | |
1784 | ||
1785 | case CTF_K_FLOAT: | |
1786 | /* If we found a match we will have either returned it or declared a | |
1787 | conflict. */ | |
1788 | dst_type = ctf_add_float (dst_fp, flag, name, &src_en); | |
1789 | break; | |
1790 | ||
1791 | case CTF_K_SLICE: | |
1792 | /* We have checked for conflicting encodings: now try to add the | |
1793 | contained type. */ | |
1794 | src_type = ctf_type_reference (src_fp, src_type); | |
99dc3ebd NA |
1795 | src_type = ctf_add_type_internal (dst_fp, src_fp, src_type, |
1796 | proc_tracking_fp); | |
c499eb68 NA |
1797 | |
1798 | if (src_type == CTF_ERR) | |
1799 | return CTF_ERR; /* errno is set for us. */ | |
1800 | ||
1801 | dst_type = ctf_add_slice (dst_fp, flag, src_type, &src_en); | |
1802 | break; | |
1803 | ||
1804 | case CTF_K_POINTER: | |
1805 | case CTF_K_VOLATILE: | |
1806 | case CTF_K_CONST: | |
1807 | case CTF_K_RESTRICT: | |
1808 | src_type = ctf_type_reference (src_fp, src_type); | |
99dc3ebd NA |
1809 | src_type = ctf_add_type_internal (dst_fp, src_fp, src_type, |
1810 | proc_tracking_fp); | |
c499eb68 NA |
1811 | |
1812 | if (src_type == CTF_ERR) | |
1813 | return CTF_ERR; /* errno is set for us. */ | |
1814 | ||
1815 | dst_type = ctf_add_reftype (dst_fp, flag, src_type, kind); | |
1816 | break; | |
1817 | ||
1818 | case CTF_K_ARRAY: | |
a0486bac | 1819 | if (ctf_array_info (src_fp, src_type, &src_ar) != 0) |
998a4f58 | 1820 | return (ctf_set_typed_errno (dst_fp, ctf_errno (src_fp))); |
c499eb68 NA |
1821 | |
1822 | src_ar.ctr_contents = | |
99dc3ebd NA |
1823 | ctf_add_type_internal (dst_fp, src_fp, src_ar.ctr_contents, |
1824 | proc_tracking_fp); | |
1825 | src_ar.ctr_index = ctf_add_type_internal (dst_fp, src_fp, | |
1826 | src_ar.ctr_index, | |
1827 | proc_tracking_fp); | |
c499eb68 NA |
1828 | src_ar.ctr_nelems = src_ar.ctr_nelems; |
1829 | ||
1830 | if (src_ar.ctr_contents == CTF_ERR || src_ar.ctr_index == CTF_ERR) | |
1831 | return CTF_ERR; /* errno is set for us. */ | |
1832 | ||
1833 | if (dst_type != CTF_ERR) | |
1834 | { | |
1835 | if (ctf_array_info (dst_fp, dst_type, &dst_ar) != 0) | |
1836 | return CTF_ERR; /* errno is set for us. */ | |
1837 | ||
1838 | if (memcmp (&src_ar, &dst_ar, sizeof (ctf_arinfo_t))) | |
1839 | { | |
926c9e76 NA |
1840 | ctf_err_warn (dst_fp, 1, ECTF_CONFLICT, |
1841 | _("conflict for type %s against ID %lx: array info " | |
1842 | "differs, old %lx/%lx/%x; new: %lx/%lx/%x"), | |
1843 | name, dst_type, src_ar.ctr_contents, | |
1844 | src_ar.ctr_index, src_ar.ctr_nelems, | |
1845 | dst_ar.ctr_contents, dst_ar.ctr_index, | |
1846 | dst_ar.ctr_nelems); | |
998a4f58 | 1847 | return (ctf_set_typed_errno (dst_fp, ECTF_CONFLICT)); |
c499eb68 NA |
1848 | } |
1849 | } | |
1850 | else | |
1851 | dst_type = ctf_add_array (dst_fp, flag, &src_ar); | |
1852 | break; | |
1853 | ||
1854 | case CTF_K_FUNCTION: | |
99dc3ebd NA |
1855 | ctc.ctc_return = ctf_add_type_internal (dst_fp, src_fp, |
1856 | src_tp->ctt_type, | |
1857 | proc_tracking_fp); | |
c499eb68 NA |
1858 | ctc.ctc_argc = 0; |
1859 | ctc.ctc_flags = 0; | |
1860 | ||
1861 | if (ctc.ctc_return == CTF_ERR) | |
1862 | return CTF_ERR; /* errno is set for us. */ | |
1863 | ||
1864 | dst_type = ctf_add_function (dst_fp, flag, &ctc, NULL); | |
1865 | break; | |
1866 | ||
1867 | case CTF_K_STRUCT: | |
1868 | case CTF_K_UNION: | |
1869 | { | |
08c428af NA |
1870 | ctf_next_t *i = NULL; |
1871 | ssize_t offset; | |
1872 | const char *membname; | |
1873 | ctf_id_t src_membtype; | |
c499eb68 NA |
1874 | |
1875 | /* Technically to match a struct or union we need to check both | |
1876 | ways (src members vs. dst, dst members vs. src) but we make | |
1877 | this more optimal by only checking src vs. dst and comparing | |
1878 | the total size of the structure (which we must do anyway) | |
1879 | which covers the possibility of dst members not in src. | |
1880 | This optimization can be defeated for unions, but is so | |
1881 | pathological as to render it irrelevant for our purposes. */ | |
1882 | ||
99dc3ebd NA |
1883 | if (dst_type != CTF_ERR && kind != CTF_K_FORWARD |
1884 | && dst_kind != CTF_K_FORWARD) | |
c499eb68 NA |
1885 | { |
1886 | if (ctf_type_size (src_fp, src_type) != | |
1887 | ctf_type_size (dst_fp, dst_type)) | |
1888 | { | |
926c9e76 NA |
1889 | ctf_err_warn (dst_fp, 1, ECTF_CONFLICT, |
1890 | _("conflict for type %s against ID %lx: union " | |
1891 | "size differs, old %li, new %li"), name, | |
1892 | dst_type, (long) ctf_type_size (src_fp, src_type), | |
1893 | (long) ctf_type_size (dst_fp, dst_type)); | |
998a4f58 | 1894 | return (ctf_set_typed_errno (dst_fp, ECTF_CONFLICT)); |
c499eb68 NA |
1895 | } |
1896 | ||
1897 | if (ctf_member_iter (src_fp, src_type, membcmp, &dst)) | |
1898 | { | |
926c9e76 NA |
1899 | ctf_err_warn (dst_fp, 1, ECTF_CONFLICT, |
1900 | _("conflict for type %s against ID %lx: members " | |
1901 | "differ, see above"), name, dst_type); | |
998a4f58 | 1902 | return (ctf_set_typed_errno (dst_fp, ECTF_CONFLICT)); |
c499eb68 NA |
1903 | } |
1904 | ||
1905 | break; | |
1906 | } | |
1907 | ||
08c428af NA |
1908 | dst_type = ctf_add_struct_sized (dst_fp, flag, name, |
1909 | ctf_type_size (src_fp, src_type)); | |
c499eb68 NA |
1910 | if (dst_type == CTF_ERR) |
1911 | return CTF_ERR; /* errno is set for us. */ | |
1912 | ||
99dc3ebd NA |
1913 | /* Pre-emptively add this struct to the type mapping so that |
1914 | structures that refer to themselves work. */ | |
1915 | ctf_add_type_mapping (src_fp, src_type, dst_fp, dst_type); | |
1916 | ||
08c428af NA |
1917 | while ((offset = ctf_member_next (src_fp, src_type, &i, &membname, |
1918 | &src_membtype, 0)) >= 0) | |
c499eb68 | 1919 | { |
139633c3 | 1920 | ctf_dict_t *dst = dst_fp; |
08c428af | 1921 | ctf_id_t dst_membtype = ctf_type_mapping (src_fp, src_membtype, &dst); |
99dc3ebd | 1922 | |
08c428af | 1923 | if (dst_membtype == 0) |
791915db | 1924 | { |
08c428af NA |
1925 | dst_membtype = ctf_add_type_internal (dst_fp, src_fp, |
1926 | src_membtype, | |
1927 | proc_tracking_fp); | |
1928 | if (dst_membtype == CTF_ERR) | |
99dc3ebd NA |
1929 | { |
1930 | if (ctf_errno (dst_fp) != ECTF_NONREPRESENTABLE) | |
08c428af NA |
1931 | { |
1932 | ctf_next_destroy (i); | |
1933 | break; | |
1934 | } | |
99dc3ebd | 1935 | } |
791915db | 1936 | } |
c499eb68 | 1937 | |
08c428af NA |
1938 | if (ctf_add_member_offset (dst_fp, dst_type, membname, |
1939 | dst_membtype, offset) < 0) | |
1940 | { | |
1941 | ctf_next_destroy (i); | |
1942 | break; | |
1943 | } | |
1944 | } | |
1945 | if (ctf_errno (src_fp) != ECTF_NEXT_END) | |
c499eb68 NA |
1946 | return CTF_ERR; /* errno is set for us. */ |
1947 | break; | |
1948 | } | |
1949 | ||
1950 | case CTF_K_ENUM: | |
99dc3ebd NA |
1951 | if (dst_type != CTF_ERR && kind != CTF_K_FORWARD |
1952 | && dst_kind != CTF_K_FORWARD) | |
c499eb68 NA |
1953 | { |
1954 | if (ctf_enum_iter (src_fp, src_type, enumcmp, &dst) | |
1955 | || ctf_enum_iter (dst_fp, dst_type, enumcmp, &src)) | |
1956 | { | |
926c9e76 NA |
1957 | ctf_err_warn (dst_fp, 1, ECTF_CONFLICT, |
1958 | _("conflict for enum %s against ID %lx: members " | |
1959 | "differ, see above"), name, dst_type); | |
998a4f58 | 1960 | return (ctf_set_typed_errno (dst_fp, ECTF_CONFLICT)); |
c499eb68 NA |
1961 | } |
1962 | } | |
1963 | else | |
1964 | { | |
1965 | dst_type = ctf_add_enum (dst_fp, flag, name); | |
1966 | if ((dst.ctb_type = dst_type) == CTF_ERR | |
1967 | || ctf_enum_iter (src_fp, src_type, enumadd, &dst)) | |
1968 | return CTF_ERR; /* errno is set for us */ | |
1969 | } | |
1970 | break; | |
1971 | ||
1972 | case CTF_K_FORWARD: | |
1973 | if (dst_type == CTF_ERR) | |
5de9eada | 1974 | dst_type = ctf_add_forward (dst_fp, flag, name, forward_kind); |
c499eb68 NA |
1975 | break; |
1976 | ||
1977 | case CTF_K_TYPEDEF: | |
1978 | src_type = ctf_type_reference (src_fp, src_type); | |
99dc3ebd NA |
1979 | src_type = ctf_add_type_internal (dst_fp, src_fp, src_type, |
1980 | proc_tracking_fp); | |
c499eb68 NA |
1981 | |
1982 | if (src_type == CTF_ERR) | |
1983 | return CTF_ERR; /* errno is set for us. */ | |
1984 | ||
1985 | /* If dst_type is not CTF_ERR at this point, we should check if | |
1986 | ctf_type_reference(dst_fp, dst_type) != src_type and if so fail with | |
1987 | ECTF_CONFLICT. However, this causes problems with bitness typedefs | |
1988 | that vary based on things like if 32-bit then pid_t is int otherwise | |
1989 | long. We therefore omit this check and assume that if the identically | |
1990 | named typedef already exists in dst_fp, it is correct or | |
1991 | equivalent. */ | |
1992 | ||
1993 | if (dst_type == CTF_ERR) | |
c499eb68 | 1994 | dst_type = ctf_add_typedef (dst_fp, flag, name, src_type); |
99dc3ebd | 1995 | |
c499eb68 NA |
1996 | break; |
1997 | ||
1998 | default: | |
998a4f58 | 1999 | return (ctf_set_typed_errno (dst_fp, ECTF_CORRUPT)); |
c499eb68 NA |
2000 | } |
2001 | ||
886453cb NA |
2002 | if (dst_type != CTF_ERR) |
2003 | ctf_add_type_mapping (src_fp, orig_src_type, dst_fp, dst_type); | |
c499eb68 NA |
2004 | return dst_type; |
2005 | } | |
2006 | ||
99dc3ebd | 2007 | ctf_id_t |
139633c3 | 2008 | ctf_add_type (ctf_dict_t *dst_fp, ctf_dict_t *src_fp, ctf_id_t src_type) |
99dc3ebd NA |
2009 | { |
2010 | ctf_id_t id; | |
2011 | ||
2012 | if (!src_fp->ctf_add_processing) | |
2013 | src_fp->ctf_add_processing = ctf_dynhash_create (ctf_hash_integer, | |
2014 | ctf_hash_eq_integer, | |
2015 | NULL, NULL); | |
2016 | ||
2017 | /* We store the hash on the source, because it contains only source type IDs: | |
2018 | but callers will invariably expect errors to appear on the dest. */ | |
2019 | if (!src_fp->ctf_add_processing) | |
998a4f58 | 2020 | return (ctf_set_typed_errno (dst_fp, ENOMEM)); |
99dc3ebd NA |
2021 | |
2022 | id = ctf_add_type_internal (dst_fp, src_fp, src_type, src_fp); | |
2023 | ctf_dynhash_empty (src_fp->ctf_add_processing); | |
2024 | ||
2025 | return id; | |
2026 | } |