Commit | Line | Data |
---|---|---|
a30b3e18 | 1 | /* Textual dumping of CTF data. |
b3adc24a | 2 | Copyright (C) 2019-2020 Free Software Foundation, Inc. |
a30b3e18 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 <string.h> | |
22 | ||
9323dd86 NA |
23 | #define str_append(s, a) ctf_str_append_noerr (s, a) |
24 | ||
a30b3e18 NA |
25 | /* One item to be dumped, in string form. */ |
26 | ||
27 | typedef struct ctf_dump_item | |
28 | { | |
29 | ctf_list_t cdi_list; | |
30 | char *cdi_item; | |
31 | } ctf_dump_item_t; | |
32 | ||
33 | /* Cross-call state for dumping. Basically just enough to track the section in | |
34 | use and a list of return strings. */ | |
35 | ||
36 | struct ctf_dump_state | |
37 | { | |
38 | ctf_sect_names_t cds_sect; | |
139633c3 | 39 | ctf_dict_t *cds_fp; |
a30b3e18 NA |
40 | ctf_dump_item_t *cds_current; |
41 | ctf_list_t cds_items; | |
42 | }; | |
43 | ||
44 | /* Cross-call state for ctf_dump_member. */ | |
45 | ||
46 | typedef struct ctf_dump_membstate | |
47 | { | |
48 | char **cdm_str; | |
139633c3 | 49 | ctf_dict_t *cdm_fp; |
a30b3e18 NA |
50 | } ctf_dump_membstate_t; |
51 | ||
52 | static int | |
53 | ctf_dump_append (ctf_dump_state_t *state, char *str) | |
54 | { | |
55 | ctf_dump_item_t *cdi; | |
56 | ||
de07e349 | 57 | if ((cdi = malloc (sizeof (struct ctf_dump_item))) == NULL) |
a30b3e18 NA |
58 | return (ctf_set_errno (state->cds_fp, ENOMEM)); |
59 | ||
60 | cdi->cdi_item = str; | |
61 | ctf_list_append (&state->cds_items, cdi); | |
62 | return 0; | |
63 | } | |
64 | ||
65 | static void | |
66 | ctf_dump_free (ctf_dump_state_t *state) | |
67 | { | |
68 | ctf_dump_item_t *cdi, *next_cdi; | |
69 | ||
70 | if (state == NULL) | |
71 | return; | |
72 | ||
73 | for (cdi = ctf_list_next (&state->cds_items); cdi != NULL; | |
74 | cdi = next_cdi) | |
75 | { | |
76 | free (cdi->cdi_item); | |
77 | next_cdi = ctf_list_next (cdi); | |
de07e349 | 78 | free (cdi); |
a30b3e18 NA |
79 | } |
80 | } | |
81 | ||
a30b3e18 NA |
82 | /* Return a dump for a single type, without member info: but do show the |
83 | type's references. */ | |
84 | ||
85 | static char * | |
139633c3 | 86 | ctf_dump_format_type (ctf_dict_t *fp, ctf_id_t id, int flag) |
a30b3e18 NA |
87 | { |
88 | ctf_id_t new_id; | |
89 | char *str = NULL, *bit = NULL, *buf = NULL; | |
90 | ||
91 | new_id = id; | |
92 | do | |
93 | { | |
94 | ctf_encoding_t enc; | |
b4f0e09c NA |
95 | const char *nonroot_leader = ""; |
96 | const char *nonroot_trailer = ""; | |
a30b3e18 NA |
97 | |
98 | id = new_id; | |
b4f0e09c NA |
99 | if (flag == CTF_ADD_NONROOT) |
100 | { | |
101 | nonroot_leader = "{"; | |
102 | nonroot_trailer = "}"; | |
103 | } | |
104 | ||
a30b3e18 NA |
105 | buf = ctf_type_aname (fp, id); |
106 | if (!buf) | |
791915db NA |
107 | { |
108 | if (id == 0 || ctf_errno (fp) == ECTF_NONREPRESENTABLE) | |
109 | { | |
9323dd86 | 110 | str = str_append (str, " (type not represented in CTF)"); |
791915db NA |
111 | ctf_set_errno (fp, ECTF_NOTREF); |
112 | break; | |
113 | } | |
114 | ||
115 | goto err; | |
116 | } | |
a30b3e18 | 117 | |
70447401 NA |
118 | if (asprintf (&bit, " %s%lx: ", nonroot_leader, id) < 0) |
119 | goto oom; | |
120 | str = str_append (str, bit); | |
121 | free (bit); | |
122 | bit = NULL; | |
a30b3e18 | 123 | |
70447401 NA |
124 | if (buf[0] != '\0') |
125 | { | |
126 | str = str_append (str, buf); | |
127 | str = str_append (str, " "); | |
128 | } | |
129 | ||
130 | free (buf); | |
131 | buf = NULL; | |
132 | ||
133 | /* Slices get a different print representation. */ | |
134 | if (ctf_type_kind_unsliced (fp, id) == CTF_K_SLICE) | |
a30b3e18 NA |
135 | { |
136 | ctf_type_encoding (fp, id, &enc); | |
70447401 NA |
137 | if (asprintf (&bit, "[slice 0x%x:0x%x] ", |
138 | enc.cte_offset, enc.cte_bits) < 0) | |
a30b3e18 NA |
139 | goto oom; |
140 | } | |
70447401 | 141 | else if (ctf_type_kind (fp, id) == CTF_K_INTEGER) |
a30b3e18 | 142 | { |
70447401 NA |
143 | ctf_type_encoding (fp, id, &enc); |
144 | if (asprintf (&bit, "[0x%x:0x%x] ", | |
145 | enc.cte_offset, enc.cte_bits) < 0) | |
a30b3e18 NA |
146 | goto oom; |
147 | } | |
70447401 NA |
148 | str = str_append (str, bit); |
149 | free (bit); | |
150 | bit = NULL; | |
151 | ||
152 | if (asprintf (&bit, "(size 0x%lx)%s", | |
153 | (unsigned long) ctf_type_size (fp, id), | |
154 | nonroot_trailer) < 0) | |
155 | goto oom; | |
156 | ||
9323dd86 | 157 | str = str_append (str, bit); |
a30b3e18 NA |
158 | free (bit); |
159 | bit = NULL; | |
160 | ||
161 | new_id = ctf_type_reference (fp, id); | |
162 | if (new_id != CTF_ERR) | |
9323dd86 | 163 | str = str_append (str, " ->"); |
a30b3e18 NA |
164 | } while (new_id != CTF_ERR); |
165 | ||
166 | if (ctf_errno (fp) != ECTF_NOTREF) | |
167 | { | |
168 | free (str); | |
169 | return NULL; | |
170 | } | |
171 | ||
172 | return str; | |
173 | ||
174 | oom: | |
791915db NA |
175 | ctf_set_errno (fp, errno); |
176 | err: | |
926c9e76 | 177 | ctf_err_warn (fp, 1, 0, _("cannot format name dumping type 0x%lx"), id); |
a30b3e18 NA |
178 | free (buf); |
179 | free (str); | |
180 | free (bit); | |
a30b3e18 NA |
181 | return NULL; |
182 | } | |
183 | ||
9b32cba4 NA |
184 | /* Dump one string field from the file header into the cds_items. */ |
185 | static int | |
139633c3 | 186 | ctf_dump_header_strfield (ctf_dict_t *fp, ctf_dump_state_t *state, |
9b32cba4 NA |
187 | const char *name, uint32_t value) |
188 | { | |
189 | char *str; | |
190 | if (value) | |
191 | { | |
192 | if (asprintf (&str, "%s: %s\n", name, ctf_strptr (fp, value)) < 0) | |
193 | goto err; | |
194 | ctf_dump_append (state, str); | |
195 | } | |
196 | return 0; | |
197 | ||
198 | err: | |
791915db | 199 | return (ctf_set_errno (fp, errno)); |
9b32cba4 NA |
200 | } |
201 | ||
202 | /* Dump one section-offset field from the file header into the cds_items. */ | |
203 | static int | |
139633c3 | 204 | ctf_dump_header_sectfield (ctf_dict_t *fp, ctf_dump_state_t *state, |
9b32cba4 NA |
205 | const char *sect, uint32_t off, uint32_t nextoff) |
206 | { | |
207 | char *str; | |
208 | if (nextoff - off) | |
209 | { | |
210 | if (asprintf (&str, "%s:\t0x%lx -- 0x%lx (0x%lx bytes)\n", sect, | |
211 | (unsigned long) off, (unsigned long) (nextoff - 1), | |
212 | (unsigned long) (nextoff - off)) < 0) | |
213 | goto err; | |
214 | ctf_dump_append (state, str); | |
215 | } | |
216 | return 0; | |
217 | ||
218 | err: | |
791915db | 219 | return (ctf_set_errno (fp, errno)); |
9b32cba4 NA |
220 | } |
221 | ||
222 | /* Dump the file header into the cds_items. */ | |
223 | static int | |
139633c3 | 224 | ctf_dump_header (ctf_dict_t *fp, ctf_dump_state_t *state) |
9b32cba4 NA |
225 | { |
226 | char *str; | |
227 | const ctf_header_t *hp = fp->ctf_header; | |
228 | const char *vertab[] = | |
229 | { | |
230 | NULL, "CTF_VERSION_1", | |
231 | "CTF_VERSION_1_UPGRADED_3 (latest format, version 1 type " | |
232 | "boundaries)", | |
233 | "CTF_VERSION_2", | |
234 | "CTF_VERSION_3", NULL | |
235 | }; | |
236 | const char *verstr = NULL; | |
237 | ||
238 | if (asprintf (&str, "Magic number: %x\n", hp->cth_magic) < 0) | |
239 | goto err; | |
240 | ctf_dump_append (state, str); | |
241 | ||
242 | if (hp->cth_version <= CTF_VERSION) | |
243 | verstr = vertab[hp->cth_version]; | |
244 | ||
245 | if (verstr == NULL) | |
246 | verstr = "(not a valid version)"; | |
247 | ||
248 | if (asprintf (&str, "Version: %i (%s)\n", hp->cth_version, | |
249 | verstr) < 0) | |
250 | goto err; | |
251 | ctf_dump_append (state, str); | |
252 | ||
253 | /* Everything else is only printed if present. */ | |
254 | ||
139633c3 | 255 | /* The flags are unusual in that they represent the ctf_dict_t *in memory*: |
9b32cba4 NA |
256 | flags representing compression, etc, are turned off as the file is |
257 | decompressed. So we store a copy of the flags before they are changed, for | |
258 | the dumper. */ | |
259 | ||
260 | if (fp->ctf_openflags > 0) | |
261 | { | |
262 | if (fp->ctf_openflags) | |
263 | if (asprintf (&str, "Flags: 0x%x (%s)", fp->ctf_openflags, | |
264 | fp->ctf_openflags & CTF_F_COMPRESS ? "CTF_F_COMPRESS" | |
265 | : "") < 0) | |
266 | goto err; | |
267 | ctf_dump_append (state, str); | |
268 | } | |
269 | ||
270 | if (ctf_dump_header_strfield (fp, state, "Parent label", | |
271 | hp->cth_parlabel) < 0) | |
272 | goto err; | |
273 | ||
274 | if (ctf_dump_header_strfield (fp, state, "Parent name", hp->cth_parname) < 0) | |
275 | goto err; | |
276 | ||
277 | if (ctf_dump_header_strfield (fp, state, "Compilation unit name", | |
278 | hp->cth_cuname) < 0) | |
279 | goto err; | |
280 | ||
281 | if (ctf_dump_header_sectfield (fp, state, "Label section", hp->cth_lbloff, | |
282 | hp->cth_objtoff) < 0) | |
283 | goto err; | |
284 | ||
285 | if (ctf_dump_header_sectfield (fp, state, "Data object section", | |
286 | hp->cth_objtoff, hp->cth_funcoff) < 0) | |
287 | goto err; | |
288 | ||
289 | if (ctf_dump_header_sectfield (fp, state, "Function info section", | |
290 | hp->cth_funcoff, hp->cth_varoff) < 0) | |
291 | goto err; | |
292 | ||
293 | if (ctf_dump_header_sectfield (fp, state, "Variable section", | |
294 | hp->cth_varoff, hp->cth_typeoff) < 0) | |
295 | goto err; | |
296 | ||
297 | if (ctf_dump_header_sectfield (fp, state, "Type section", | |
298 | hp->cth_typeoff, hp->cth_stroff) < 0) | |
299 | goto err; | |
300 | ||
301 | if (ctf_dump_header_sectfield (fp, state, "String section", hp->cth_stroff, | |
302 | hp->cth_stroff + hp->cth_strlen + 1) < 0) | |
303 | goto err; | |
304 | ||
305 | return 0; | |
306 | err: | |
791915db | 307 | return (ctf_set_errno (fp, errno)); |
9b32cba4 NA |
308 | } |
309 | ||
a30b3e18 NA |
310 | /* Dump a single label into the cds_items. */ |
311 | ||
312 | static int | |
313 | ctf_dump_label (const char *name, const ctf_lblinfo_t *info, | |
314 | void *arg) | |
315 | { | |
316 | char *str; | |
317 | char *typestr; | |
318 | ctf_dump_state_t *state = arg; | |
319 | ||
320 | if (asprintf (&str, "%s -> ", name) < 0) | |
791915db | 321 | return (ctf_set_errno (state->cds_fp, errno)); |
a30b3e18 | 322 | |
b4f0e09c NA |
323 | if ((typestr = ctf_dump_format_type (state->cds_fp, info->ctb_type, |
324 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
325 | { |
326 | free (str); | |
8e795b46 | 327 | return 0; /* Swallow the error. */ |
a30b3e18 NA |
328 | } |
329 | ||
9323dd86 | 330 | str = str_append (str, typestr); |
a30b3e18 NA |
331 | free (typestr); |
332 | ||
333 | ctf_dump_append (state, str); | |
334 | return 0; | |
335 | } | |
336 | ||
337 | /* Dump all the object entries into the cds_items. (There is no iterator for | |
338 | this section, so we just do it in a loop, and this function handles all of | |
339 | them, rather than only one. */ | |
340 | ||
341 | static int | |
139633c3 | 342 | ctf_dump_objts (ctf_dict_t *fp, ctf_dump_state_t *state) |
a30b3e18 NA |
343 | { |
344 | size_t i; | |
345 | ||
346 | for (i = 0; i < fp->ctf_nsyms; i++) | |
347 | { | |
348 | char *str; | |
349 | char *typestr; | |
350 | const char *sym_name; | |
351 | ctf_id_t type; | |
352 | ||
a0486bac | 353 | if ((type = ctf_lookup_by_symbol (state->cds_fp, i)) == CTF_ERR) |
a30b3e18 NA |
354 | switch (ctf_errno (state->cds_fp)) |
355 | { | |
356 | /* Most errors are just an indication that this symbol is not a data | |
357 | symbol, but this one indicates that we were called wrong, on a | |
358 | CTF file with no associated symbol table. */ | |
359 | case ECTF_NOSYMTAB: | |
a0486bac | 360 | return -1; |
a30b3e18 NA |
361 | case ECTF_NOTDATA: |
362 | case ECTF_NOTYPEDAT: | |
363 | continue; | |
364 | } | |
365 | ||
366 | /* Variable name. */ | |
367 | sym_name = ctf_lookup_symbol_name (fp, i); | |
368 | if (sym_name[0] == '\0') | |
369 | { | |
595a4d43 | 370 | if (asprintf (&str, "%lx -> ", (unsigned long) i) < 0) |
791915db | 371 | return (ctf_set_errno (fp, errno)); |
a30b3e18 NA |
372 | } |
373 | else | |
374 | { | |
595a4d43 | 375 | if (asprintf (&str, "%s (%lx) -> ", sym_name, (unsigned long) i) < 0) |
791915db | 376 | return (ctf_set_errno (fp, errno)); |
a30b3e18 NA |
377 | } |
378 | ||
379 | /* Variable type. */ | |
b4f0e09c NA |
380 | if ((typestr = ctf_dump_format_type (state->cds_fp, type, |
381 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
382 | { |
383 | free (str); | |
8e795b46 | 384 | return 0; /* Swallow the error. */ |
a30b3e18 NA |
385 | } |
386 | ||
9323dd86 | 387 | str = str_append (str, typestr); |
a30b3e18 NA |
388 | free (typestr); |
389 | ||
390 | ctf_dump_append (state, str); | |
391 | } | |
392 | return 0; | |
393 | } | |
394 | ||
395 | /* Dump all the function entries into the cds_items. (As above, there is no | |
396 | iterator for this section.) */ | |
397 | ||
398 | static int | |
139633c3 | 399 | ctf_dump_funcs (ctf_dict_t *fp, ctf_dump_state_t *state) |
a30b3e18 NA |
400 | { |
401 | size_t i; | |
402 | ||
403 | for (i = 0; i < fp->ctf_nsyms; i++) | |
404 | { | |
791915db | 405 | char *str; |
c6e9a1e5 | 406 | char *bit = NULL; |
a30b3e18 NA |
407 | const char *sym_name; |
408 | ctf_funcinfo_t fi; | |
409 | ctf_id_t type; | |
a30b3e18 | 410 | |
a0486bac | 411 | if ((type = ctf_func_info (state->cds_fp, i, &fi)) == CTF_ERR) |
a30b3e18 NA |
412 | switch (ctf_errno (state->cds_fp)) |
413 | { | |
414 | /* Most errors are just an indication that this symbol is not a data | |
415 | symbol, but this one indicates that we were called wrong, on a | |
416 | CTF file with no associated symbol table. */ | |
417 | case ECTF_NOSYMTAB: | |
a0486bac | 418 | return -1; |
a30b3e18 | 419 | case ECTF_NOTDATA: |
d18f9f16 NA |
420 | case ECTF_NOTFUNC: |
421 | case ECTF_NOFUNCDAT: | |
a30b3e18 NA |
422 | continue; |
423 | } | |
a30b3e18 | 424 | |
c6e9a1e5 NA |
425 | /* Return type and all args. */ |
426 | if ((bit = ctf_type_aname (state->cds_fp, type)) == NULL) | |
791915db | 427 | { |
926c9e76 NA |
428 | ctf_err_warn (fp, 1, ctf_errno (state->cds_fp), |
429 | _("cannot look up return type dumping function type " | |
430 | "for symbol 0x%li"), (unsigned long) i); | |
431 | free (bit); | |
432 | return -1; /* errno is set for us. */ | |
791915db | 433 | } |
a30b3e18 | 434 | |
c6e9a1e5 | 435 | /* Replace in the returned string, dropping in the function name. */ |
a30b3e18 NA |
436 | |
437 | sym_name = ctf_lookup_symbol_name (fp, i); | |
c6e9a1e5 | 438 | if (sym_name[0] != '\0') |
a30b3e18 | 439 | { |
c6e9a1e5 NA |
440 | char *retstar; |
441 | char *new_bit; | |
442 | char *walk; | |
443 | ||
444 | new_bit = malloc (strlen (bit) + 1 + strlen (sym_name)); | |
445 | if (!new_bit) | |
a30b3e18 | 446 | goto oom; |
a30b3e18 | 447 | |
c6e9a1e5 NA |
448 | /* See ctf_type_aname. */ |
449 | retstar = strstr (bit, "(*) ("); | |
450 | if (!ctf_assert (fp, retstar)) | |
451 | goto assert_err; | |
452 | retstar += 2; /* After the '*' */ | |
a30b3e18 | 453 | |
c6e9a1e5 NA |
454 | /* C is not good at search-and-replace. */ |
455 | walk = new_bit; | |
456 | memcpy (walk, bit, retstar - bit); | |
457 | walk += (retstar - bit); | |
458 | strcpy (walk, sym_name); | |
459 | walk += strlen (sym_name); | |
460 | strcpy (walk, retstar); | |
a30b3e18 | 461 | |
a30b3e18 | 462 | free (bit); |
c6e9a1e5 | 463 | bit = new_bit; |
a30b3e18 NA |
464 | } |
465 | ||
c6e9a1e5 NA |
466 | if (asprintf (&str, "Symbol 0x%lx: %s", (unsigned long) i, bit) < 0) |
467 | goto oom; | |
468 | free (bit); | |
a30b3e18 | 469 | |
a30b3e18 NA |
470 | ctf_dump_append (state, str); |
471 | continue; | |
472 | ||
473 | oom: | |
c6e9a1e5 | 474 | free (bit); |
791915db | 475 | return (ctf_set_errno (fp, errno)); |
c6e9a1e5 NA |
476 | |
477 | assert_err: | |
478 | free (bit); | |
a0486bac | 479 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
480 | } |
481 | return 0; | |
482 | } | |
483 | ||
484 | /* Dump a single variable into the cds_items. */ | |
485 | static int | |
486 | ctf_dump_var (const char *name, ctf_id_t type, void *arg) | |
487 | { | |
488 | char *str; | |
489 | char *typestr; | |
490 | ctf_dump_state_t *state = arg; | |
491 | ||
492 | if (asprintf (&str, "%s -> ", name) < 0) | |
791915db | 493 | return (ctf_set_errno (state->cds_fp, errno)); |
a30b3e18 | 494 | |
b4f0e09c NA |
495 | if ((typestr = ctf_dump_format_type (state->cds_fp, type, |
496 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
497 | { |
498 | free (str); | |
8e795b46 | 499 | return 0; /* Swallow the error. */ |
a30b3e18 NA |
500 | } |
501 | ||
9323dd86 | 502 | str = str_append (str, typestr); |
a30b3e18 NA |
503 | free (typestr); |
504 | ||
505 | ctf_dump_append (state, str); | |
506 | return 0; | |
507 | } | |
508 | ||
509 | /* Dump a single member into the string in the membstate. */ | |
510 | static int | |
511 | ctf_dump_member (const char *name, ctf_id_t id, unsigned long offset, | |
512 | int depth, void *arg) | |
513 | { | |
514 | ctf_dump_membstate_t *state = arg; | |
515 | char *typestr = NULL; | |
516 | char *bit = NULL; | |
517 | ctf_encoding_t ep; | |
70447401 | 518 | int has_encoding = 0; |
a30b3e18 NA |
519 | ssize_t i; |
520 | ||
521 | for (i = 0; i < depth; i++) | |
9323dd86 | 522 | *state->cdm_str = str_append (*state->cdm_str, " "); |
a30b3e18 NA |
523 | |
524 | if ((typestr = ctf_type_aname (state->cdm_fp, id)) == NULL) | |
791915db NA |
525 | { |
526 | if (id == 0 || ctf_errno (state->cdm_fp) == ECTF_NONREPRESENTABLE) | |
527 | { | |
528 | if (asprintf (&bit, " [0x%lx] (type not represented in CTF)", | |
529 | offset) < 0) | |
530 | goto oom; | |
531 | ||
9323dd86 | 532 | *state->cdm_str = str_append (*state->cdm_str, bit); |
791915db NA |
533 | free (typestr); |
534 | free (bit); | |
535 | return 0; | |
536 | } | |
537 | ||
70447401 NA |
538 | return -1; /* errno is set for us. */ |
539 | } | |
540 | ||
541 | if (ctf_type_encoding (state->cdm_fp, id, &ep) == 0) | |
542 | { | |
543 | has_encoding = 1; | |
544 | ctf_type_encoding (state->cdm_fp, id, &ep); | |
545 | ||
546 | if (asprintf (&bit, " [0x%lx] (ID 0x%lx) (kind %i) %s%s%s:%i " | |
547 | "(aligned at 0x%lx", offset, id, | |
548 | ctf_type_kind (state->cdm_fp, id), typestr, | |
549 | (name[0] != 0 && typestr[0] != 0) ? " " : "", name, | |
550 | ep.cte_bits, (unsigned long) ctf_type_align (state->cdm_fp, | |
551 | id)) < 0) | |
552 | goto oom; | |
553 | } | |
554 | else | |
555 | { | |
556 | if (asprintf (&bit, " [0x%lx] (ID 0x%lx) (kind %i) %s%s%s " | |
557 | "(aligned at 0x%lx", offset, id, | |
558 | ctf_type_kind (state->cdm_fp, id), typestr, | |
559 | (name[0] != 0 && typestr[0] != 0) ? " " : "", name, | |
560 | (unsigned long) ctf_type_align (state->cdm_fp, id)) < 0) | |
561 | goto oom; | |
791915db | 562 | } |
a30b3e18 | 563 | |
9323dd86 | 564 | *state->cdm_str = str_append (*state->cdm_str, bit); |
a30b3e18 NA |
565 | free (typestr); |
566 | free (bit); | |
567 | typestr = NULL; | |
568 | bit = NULL; | |
569 | ||
70447401 | 570 | if (has_encoding) |
a30b3e18 | 571 | { |
a30b3e18 NA |
572 | if (asprintf (&bit, ", format 0x%x, offset:bits 0x%x:0x%x", ep.cte_format, |
573 | ep.cte_offset, ep.cte_bits) < 0) | |
574 | goto oom; | |
9323dd86 | 575 | *state->cdm_str = str_append (*state->cdm_str, bit); |
a30b3e18 NA |
576 | free (bit); |
577 | bit = NULL; | |
578 | } | |
579 | ||
9323dd86 | 580 | *state->cdm_str = str_append (*state->cdm_str, ")\n"); |
a30b3e18 NA |
581 | return 0; |
582 | ||
583 | oom: | |
584 | free (typestr); | |
585 | free (bit); | |
791915db | 586 | return (ctf_set_errno (state->cdm_fp, errno)); |
a30b3e18 NA |
587 | } |
588 | ||
589 | /* Dump a single type into the cds_items. */ | |
a30b3e18 | 590 | static int |
b4f0e09c | 591 | ctf_dump_type (ctf_id_t id, int flag, void *arg) |
a30b3e18 NA |
592 | { |
593 | char *str; | |
594 | ctf_dump_state_t *state = arg; | |
595 | ctf_dump_membstate_t membstate = { &str, state->cds_fp }; | |
596 | size_t len; | |
597 | ||
b4f0e09c | 598 | if ((str = ctf_dump_format_type (state->cds_fp, id, flag)) == NULL) |
926c9e76 | 599 | goto err; |
a30b3e18 | 600 | |
9323dd86 | 601 | str = str_append (str, "\n"); |
a30b3e18 | 602 | if ((ctf_type_visit (state->cds_fp, id, ctf_dump_member, &membstate)) < 0) |
791915db NA |
603 | { |
604 | if (id == 0 || ctf_errno (state->cds_fp) == ECTF_NONREPRESENTABLE) | |
605 | { | |
606 | ctf_dump_append (state, str); | |
607 | return 0; | |
608 | } | |
926c9e76 NA |
609 | ctf_err_warn (state->cds_fp, 1, ctf_errno (state->cds_fp), |
610 | _("cannot visit members dumping type 0x%lx"), id); | |
791915db NA |
611 | goto err; |
612 | } | |
a30b3e18 NA |
613 | |
614 | /* Trim off the last linefeed added by ctf_dump_member(). */ | |
615 | len = strlen (str); | |
616 | if (str[len-1] == '\n') | |
617 | str[len-1] = '\0'; | |
618 | ||
619 | ctf_dump_append (state, str); | |
620 | return 0; | |
621 | ||
622 | err: | |
623 | free (str); | |
8e795b46 | 624 | return 0; /* Swallow the error. */ |
a30b3e18 NA |
625 | } |
626 | ||
627 | /* Dump the string table into the cds_items. */ | |
628 | ||
629 | static int | |
139633c3 | 630 | ctf_dump_str (ctf_dict_t *fp, ctf_dump_state_t *state) |
a30b3e18 NA |
631 | { |
632 | const char *s = fp->ctf_str[CTF_STRTAB_0].cts_strs; | |
633 | ||
634 | for (; s < fp->ctf_str[CTF_STRTAB_0].cts_strs + | |
635 | fp->ctf_str[CTF_STRTAB_0].cts_len;) | |
636 | { | |
637 | char *str; | |
595a4d43 NA |
638 | if (asprintf (&str, "%lx: %s", |
639 | (unsigned long) (s - fp->ctf_str[CTF_STRTAB_0].cts_strs), | |
a30b3e18 | 640 | s) < 0) |
791915db | 641 | return (ctf_set_errno (fp, errno)); |
a30b3e18 NA |
642 | ctf_dump_append (state, str); |
643 | s += strlen (s) + 1; | |
644 | } | |
645 | ||
646 | return 0; | |
647 | } | |
648 | ||
649 | /* Dump a particular section of a CTF file, in textual form. Call with a | |
650 | pointer to a NULL STATE: each call emits a dynamically allocated string | |
651 | containing a description of one entity in the specified section, in order. | |
652 | Only the first call (with a NULL state) may vary SECT. Once the CTF section | |
653 | has been entirely dumped, the call returns NULL and frees and annuls the | |
654 | STATE, ready for another section to be dumped. The returned textual content | |
655 | may span multiple lines: between each call the FUNC is called with one | |
656 | textual line at a time, and should return a suitably decorated line (it can | |
657 | allocate a new one and return it if it likes). */ | |
658 | ||
659 | char * | |
139633c3 | 660 | ctf_dump (ctf_dict_t *fp, ctf_dump_state_t **statep, ctf_sect_names_t sect, |
a30b3e18 NA |
661 | ctf_dump_decorate_f *func, void *arg) |
662 | { | |
663 | char *str; | |
664 | char *line; | |
665 | ctf_dump_state_t *state = NULL; | |
666 | ||
667 | if (*statep == NULL) | |
668 | { | |
669 | /* Data collection. Transforming a call-at-a-time iterator into a | |
670 | return-at-a-time iterator in a language without call/cc is annoying. It | |
671 | is easiest to simply collect everything at once and then return it bit | |
672 | by bit. The first call will take (much) longer than otherwise, but the | |
673 | amortized time needed is the same. */ | |
674 | ||
de07e349 | 675 | if ((*statep = malloc (sizeof (struct ctf_dump_state))) == NULL) |
a30b3e18 NA |
676 | { |
677 | ctf_set_errno (fp, ENOMEM); | |
678 | goto end; | |
679 | } | |
680 | state = *statep; | |
681 | ||
682 | memset (state, 0, sizeof (struct ctf_dump_state)); | |
683 | state->cds_fp = fp; | |
684 | state->cds_sect = sect; | |
685 | ||
686 | switch (sect) | |
687 | { | |
688 | case CTF_SECT_HEADER: | |
9b32cba4 | 689 | ctf_dump_header (fp, state); |
a30b3e18 NA |
690 | break; |
691 | case CTF_SECT_LABEL: | |
692 | if (ctf_label_iter (fp, ctf_dump_label, state) < 0) | |
693 | { | |
694 | if (ctf_errno (fp) != ECTF_NOLABELDATA) | |
695 | goto end; /* errno is set for us. */ | |
696 | ctf_set_errno (fp, 0); | |
697 | } | |
698 | break; | |
699 | case CTF_SECT_OBJT: | |
700 | if (ctf_dump_objts (fp, state) < 0) | |
701 | goto end; /* errno is set for us. */ | |
702 | break; | |
703 | case CTF_SECT_FUNC: | |
704 | if (ctf_dump_funcs (fp, state) < 0) | |
705 | goto end; /* errno is set for us. */ | |
706 | break; | |
707 | case CTF_SECT_VAR: | |
708 | if (ctf_variable_iter (fp, ctf_dump_var, state) < 0) | |
709 | goto end; /* errno is set for us. */ | |
710 | break; | |
711 | case CTF_SECT_TYPE: | |
b4f0e09c | 712 | if (ctf_type_iter_all (fp, ctf_dump_type, state) < 0) |
a30b3e18 NA |
713 | goto end; /* errno is set for us. */ |
714 | break; | |
715 | case CTF_SECT_STR: | |
716 | ctf_dump_str (fp, state); | |
717 | break; | |
718 | default: | |
719 | ctf_set_errno (fp, ECTF_DUMPSECTUNKNOWN); | |
720 | goto end; | |
721 | } | |
722 | } | |
723 | else | |
724 | { | |
725 | state = *statep; | |
726 | ||
727 | if (state->cds_sect != sect) | |
728 | { | |
729 | ctf_set_errno (fp, ECTF_DUMPSECTCHANGED); | |
730 | goto end; | |
731 | } | |
732 | } | |
733 | ||
734 | if (state->cds_current == NULL) | |
735 | state->cds_current = ctf_list_next (&state->cds_items); | |
736 | else | |
737 | state->cds_current = ctf_list_next (state->cds_current); | |
738 | ||
739 | if (state->cds_current == NULL) | |
740 | goto end; | |
741 | ||
742 | /* Hookery. There is some extra complexity to preserve linefeeds within each | |
743 | item while removing linefeeds at the end. */ | |
744 | if (func) | |
745 | { | |
746 | size_t len; | |
747 | ||
748 | str = NULL; | |
749 | for (line = state->cds_current->cdi_item; line && *line; ) | |
750 | { | |
751 | char *nline = line; | |
752 | char *ret; | |
753 | ||
754 | nline = strchr (line, '\n'); | |
755 | if (nline) | |
756 | nline[0] = '\0'; | |
757 | ||
758 | ret = func (sect, line, arg); | |
9323dd86 NA |
759 | str = str_append (str, ret); |
760 | str = str_append (str, "\n"); | |
a30b3e18 NA |
761 | if (ret != line) |
762 | free (ret); | |
763 | ||
764 | if (nline) | |
765 | { | |
766 | nline[0] = '\n'; | |
767 | nline++; | |
768 | } | |
769 | ||
770 | line = nline; | |
771 | } | |
772 | ||
773 | len = strlen (str); | |
774 | ||
775 | if (str[len-1] == '\n') | |
776 | str[len-1] = '\0'; | |
777 | } | |
778 | else | |
9323dd86 NA |
779 | { |
780 | str = strdup (state->cds_current->cdi_item); | |
781 | if (!str) | |
782 | { | |
783 | ctf_set_errno (fp, ENOMEM); | |
784 | return str; | |
785 | } | |
786 | } | |
a30b3e18 NA |
787 | |
788 | ctf_set_errno (fp, 0); | |
789 | return str; | |
790 | ||
791 | end: | |
792 | ctf_dump_free (state); | |
de07e349 | 793 | free (state); |
a30b3e18 NA |
794 | ctf_set_errno (fp, 0); |
795 | *statep = NULL; | |
796 | return NULL; | |
797 | } |