Commit | Line | Data |
---|---|---|
a30b3e18 NA |
1 | /* Textual dumping of CTF data. |
2 | Copyright (C) 2019 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of libctf. | |
5 | ||
6 | libctf is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
14 | See the GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; see the file COPYING. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include <ctf-impl.h> | |
21 | #include <string.h> | |
22 | ||
23 | /* One item to be dumped, in string form. */ | |
24 | ||
25 | typedef struct ctf_dump_item | |
26 | { | |
27 | ctf_list_t cdi_list; | |
28 | char *cdi_item; | |
29 | } ctf_dump_item_t; | |
30 | ||
31 | /* Cross-call state for dumping. Basically just enough to track the section in | |
32 | use and a list of return strings. */ | |
33 | ||
34 | struct ctf_dump_state | |
35 | { | |
36 | ctf_sect_names_t cds_sect; | |
37 | ctf_file_t *cds_fp; | |
38 | ctf_dump_item_t *cds_current; | |
39 | ctf_list_t cds_items; | |
40 | }; | |
41 | ||
42 | /* Cross-call state for ctf_dump_member. */ | |
43 | ||
44 | typedef struct ctf_dump_membstate | |
45 | { | |
46 | char **cdm_str; | |
47 | ctf_file_t *cdm_fp; | |
48 | } ctf_dump_membstate_t; | |
49 | ||
50 | static int | |
51 | ctf_dump_append (ctf_dump_state_t *state, char *str) | |
52 | { | |
53 | ctf_dump_item_t *cdi; | |
54 | ||
55 | if ((cdi = ctf_alloc (sizeof (struct ctf_dump_item))) == NULL) | |
56 | return (ctf_set_errno (state->cds_fp, ENOMEM)); | |
57 | ||
58 | cdi->cdi_item = str; | |
59 | ctf_list_append (&state->cds_items, cdi); | |
60 | return 0; | |
61 | } | |
62 | ||
63 | static void | |
64 | ctf_dump_free (ctf_dump_state_t *state) | |
65 | { | |
66 | ctf_dump_item_t *cdi, *next_cdi; | |
67 | ||
68 | if (state == NULL) | |
69 | return; | |
70 | ||
71 | for (cdi = ctf_list_next (&state->cds_items); cdi != NULL; | |
72 | cdi = next_cdi) | |
73 | { | |
74 | free (cdi->cdi_item); | |
75 | next_cdi = ctf_list_next (cdi); | |
76 | ctf_free (cdi); | |
77 | } | |
78 | } | |
79 | ||
80 | /* Slices need special handling to distinguish them from their referenced | |
81 | type. */ | |
82 | ||
83 | static int | |
84 | ctf_is_slice (ctf_file_t *fp, ctf_id_t id, ctf_encoding_t *enc) | |
85 | { | |
86 | int kind = ctf_type_kind (fp, id); | |
87 | ||
88 | return (((kind == CTF_K_INTEGER) || (kind == CTF_K_ENUM) | |
89 | || (kind == CTF_K_FLOAT)) | |
90 | && ctf_type_reference (fp, id) != CTF_ERR | |
a0486bac | 91 | && ctf_type_encoding (fp, id, enc) == 0); |
a30b3e18 NA |
92 | } |
93 | ||
94 | /* Return a dump for a single type, without member info: but do show the | |
95 | type's references. */ | |
96 | ||
97 | static char * | |
b4f0e09c | 98 | ctf_dump_format_type (ctf_file_t *fp, ctf_id_t id, int flag) |
a30b3e18 NA |
99 | { |
100 | ctf_id_t new_id; | |
101 | char *str = NULL, *bit = NULL, *buf = NULL; | |
102 | ||
103 | new_id = id; | |
104 | do | |
105 | { | |
106 | ctf_encoding_t enc; | |
b4f0e09c NA |
107 | const char *nonroot_leader = ""; |
108 | const char *nonroot_trailer = ""; | |
a30b3e18 NA |
109 | |
110 | id = new_id; | |
b4f0e09c NA |
111 | if (flag == CTF_ADD_NONROOT) |
112 | { | |
113 | nonroot_leader = "{"; | |
114 | nonroot_trailer = "}"; | |
115 | } | |
116 | ||
a30b3e18 NA |
117 | buf = ctf_type_aname (fp, id); |
118 | if (!buf) | |
791915db NA |
119 | { |
120 | if (id == 0 || ctf_errno (fp) == ECTF_NONREPRESENTABLE) | |
121 | { | |
122 | str = ctf_str_append (str, " (type not represented in CTF)"); | |
123 | ctf_set_errno (fp, ECTF_NOTREF); | |
124 | break; | |
125 | } | |
126 | ||
127 | goto err; | |
128 | } | |
a30b3e18 NA |
129 | |
130 | /* Slices get a different print representation. */ | |
131 | ||
132 | if (ctf_is_slice (fp, id, &enc)) | |
133 | { | |
134 | ctf_type_encoding (fp, id, &enc); | |
b4f0e09c NA |
135 | if (asprintf (&bit, " %s%lx: [slice 0x%x:0x%x]%s", |
136 | nonroot_leader, id, enc.cte_offset, enc.cte_bits, | |
137 | nonroot_trailer) < 0) | |
a30b3e18 NA |
138 | goto oom; |
139 | } | |
140 | else | |
141 | { | |
b4f0e09c NA |
142 | if (asprintf (&bit, " %s%lx: %s (size 0x%lx)%s", nonroot_leader, |
143 | id, buf[0] == '\0' ? "(nameless)" : buf, | |
144 | (unsigned long) ctf_type_size (fp, id), | |
145 | nonroot_trailer) < 0) | |
a30b3e18 NA |
146 | goto oom; |
147 | } | |
148 | free (buf); | |
149 | buf = NULL; | |
150 | str = ctf_str_append (str, bit); | |
151 | free (bit); | |
152 | bit = NULL; | |
153 | ||
154 | new_id = ctf_type_reference (fp, id); | |
155 | if (new_id != CTF_ERR) | |
156 | str = ctf_str_append (str, " ->"); | |
157 | } while (new_id != CTF_ERR); | |
158 | ||
159 | if (ctf_errno (fp) != ECTF_NOTREF) | |
160 | { | |
161 | free (str); | |
162 | return NULL; | |
163 | } | |
164 | ||
165 | return str; | |
166 | ||
167 | oom: | |
791915db NA |
168 | ctf_set_errno (fp, errno); |
169 | err: | |
a30b3e18 NA |
170 | free (buf); |
171 | free (str); | |
172 | free (bit); | |
a30b3e18 NA |
173 | return NULL; |
174 | } | |
175 | ||
9b32cba4 NA |
176 | /* Dump one string field from the file header into the cds_items. */ |
177 | static int | |
178 | ctf_dump_header_strfield (ctf_file_t *fp, ctf_dump_state_t *state, | |
179 | const char *name, uint32_t value) | |
180 | { | |
181 | char *str; | |
182 | if (value) | |
183 | { | |
184 | if (asprintf (&str, "%s: %s\n", name, ctf_strptr (fp, value)) < 0) | |
185 | goto err; | |
186 | ctf_dump_append (state, str); | |
187 | } | |
188 | return 0; | |
189 | ||
190 | err: | |
791915db | 191 | return (ctf_set_errno (fp, errno)); |
9b32cba4 NA |
192 | } |
193 | ||
194 | /* Dump one section-offset field from the file header into the cds_items. */ | |
195 | static int | |
196 | ctf_dump_header_sectfield (ctf_file_t *fp, ctf_dump_state_t *state, | |
197 | const char *sect, uint32_t off, uint32_t nextoff) | |
198 | { | |
199 | char *str; | |
200 | if (nextoff - off) | |
201 | { | |
202 | if (asprintf (&str, "%s:\t0x%lx -- 0x%lx (0x%lx bytes)\n", sect, | |
203 | (unsigned long) off, (unsigned long) (nextoff - 1), | |
204 | (unsigned long) (nextoff - off)) < 0) | |
205 | goto err; | |
206 | ctf_dump_append (state, str); | |
207 | } | |
208 | return 0; | |
209 | ||
210 | err: | |
791915db | 211 | return (ctf_set_errno (fp, errno)); |
9b32cba4 NA |
212 | } |
213 | ||
214 | /* Dump the file header into the cds_items. */ | |
215 | static int | |
216 | ctf_dump_header (ctf_file_t *fp, ctf_dump_state_t *state) | |
217 | { | |
218 | char *str; | |
219 | const ctf_header_t *hp = fp->ctf_header; | |
220 | const char *vertab[] = | |
221 | { | |
222 | NULL, "CTF_VERSION_1", | |
223 | "CTF_VERSION_1_UPGRADED_3 (latest format, version 1 type " | |
224 | "boundaries)", | |
225 | "CTF_VERSION_2", | |
226 | "CTF_VERSION_3", NULL | |
227 | }; | |
228 | const char *verstr = NULL; | |
229 | ||
230 | if (asprintf (&str, "Magic number: %x\n", hp->cth_magic) < 0) | |
231 | goto err; | |
232 | ctf_dump_append (state, str); | |
233 | ||
234 | if (hp->cth_version <= CTF_VERSION) | |
235 | verstr = vertab[hp->cth_version]; | |
236 | ||
237 | if (verstr == NULL) | |
238 | verstr = "(not a valid version)"; | |
239 | ||
240 | if (asprintf (&str, "Version: %i (%s)\n", hp->cth_version, | |
241 | verstr) < 0) | |
242 | goto err; | |
243 | ctf_dump_append (state, str); | |
244 | ||
245 | /* Everything else is only printed if present. */ | |
246 | ||
247 | /* The flags are unusual in that they represent the ctf_file_t *in memory*: | |
248 | flags representing compression, etc, are turned off as the file is | |
249 | decompressed. So we store a copy of the flags before they are changed, for | |
250 | the dumper. */ | |
251 | ||
252 | if (fp->ctf_openflags > 0) | |
253 | { | |
254 | if (fp->ctf_openflags) | |
255 | if (asprintf (&str, "Flags: 0x%x (%s)", fp->ctf_openflags, | |
256 | fp->ctf_openflags & CTF_F_COMPRESS ? "CTF_F_COMPRESS" | |
257 | : "") < 0) | |
258 | goto err; | |
259 | ctf_dump_append (state, str); | |
260 | } | |
261 | ||
262 | if (ctf_dump_header_strfield (fp, state, "Parent label", | |
263 | hp->cth_parlabel) < 0) | |
264 | goto err; | |
265 | ||
266 | if (ctf_dump_header_strfield (fp, state, "Parent name", hp->cth_parname) < 0) | |
267 | goto err; | |
268 | ||
269 | if (ctf_dump_header_strfield (fp, state, "Compilation unit name", | |
270 | hp->cth_cuname) < 0) | |
271 | goto err; | |
272 | ||
273 | if (ctf_dump_header_sectfield (fp, state, "Label section", hp->cth_lbloff, | |
274 | hp->cth_objtoff) < 0) | |
275 | goto err; | |
276 | ||
277 | if (ctf_dump_header_sectfield (fp, state, "Data object section", | |
278 | hp->cth_objtoff, hp->cth_funcoff) < 0) | |
279 | goto err; | |
280 | ||
281 | if (ctf_dump_header_sectfield (fp, state, "Function info section", | |
282 | hp->cth_funcoff, hp->cth_varoff) < 0) | |
283 | goto err; | |
284 | ||
285 | if (ctf_dump_header_sectfield (fp, state, "Variable section", | |
286 | hp->cth_varoff, hp->cth_typeoff) < 0) | |
287 | goto err; | |
288 | ||
289 | if (ctf_dump_header_sectfield (fp, state, "Type section", | |
290 | hp->cth_typeoff, hp->cth_stroff) < 0) | |
291 | goto err; | |
292 | ||
293 | if (ctf_dump_header_sectfield (fp, state, "String section", hp->cth_stroff, | |
294 | hp->cth_stroff + hp->cth_strlen + 1) < 0) | |
295 | goto err; | |
296 | ||
297 | return 0; | |
298 | err: | |
791915db | 299 | return (ctf_set_errno (fp, errno)); |
9b32cba4 NA |
300 | } |
301 | ||
a30b3e18 NA |
302 | /* Dump a single label into the cds_items. */ |
303 | ||
304 | static int | |
305 | ctf_dump_label (const char *name, const ctf_lblinfo_t *info, | |
306 | void *arg) | |
307 | { | |
308 | char *str; | |
309 | char *typestr; | |
310 | ctf_dump_state_t *state = arg; | |
311 | ||
312 | if (asprintf (&str, "%s -> ", name) < 0) | |
791915db | 313 | return (ctf_set_errno (state->cds_fp, errno)); |
a30b3e18 | 314 | |
b4f0e09c NA |
315 | if ((typestr = ctf_dump_format_type (state->cds_fp, info->ctb_type, |
316 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
317 | { |
318 | free (str); | |
a0486bac | 319 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
320 | } |
321 | ||
322 | str = ctf_str_append (str, typestr); | |
323 | free (typestr); | |
324 | ||
325 | ctf_dump_append (state, str); | |
326 | return 0; | |
327 | } | |
328 | ||
329 | /* Dump all the object entries into the cds_items. (There is no iterator for | |
330 | this section, so we just do it in a loop, and this function handles all of | |
331 | them, rather than only one. */ | |
332 | ||
333 | static int | |
334 | ctf_dump_objts (ctf_file_t *fp, ctf_dump_state_t *state) | |
335 | { | |
336 | size_t i; | |
337 | ||
338 | for (i = 0; i < fp->ctf_nsyms; i++) | |
339 | { | |
340 | char *str; | |
341 | char *typestr; | |
342 | const char *sym_name; | |
343 | ctf_id_t type; | |
344 | ||
a0486bac | 345 | if ((type = ctf_lookup_by_symbol (state->cds_fp, i)) == CTF_ERR) |
a30b3e18 NA |
346 | switch (ctf_errno (state->cds_fp)) |
347 | { | |
348 | /* Most errors are just an indication that this symbol is not a data | |
349 | symbol, but this one indicates that we were called wrong, on a | |
350 | CTF file with no associated symbol table. */ | |
351 | case ECTF_NOSYMTAB: | |
a0486bac | 352 | return -1; |
a30b3e18 NA |
353 | case ECTF_NOTDATA: |
354 | case ECTF_NOTYPEDAT: | |
355 | continue; | |
356 | } | |
357 | ||
358 | /* Variable name. */ | |
359 | sym_name = ctf_lookup_symbol_name (fp, i); | |
360 | if (sym_name[0] == '\0') | |
361 | { | |
595a4d43 | 362 | if (asprintf (&str, "%lx -> ", (unsigned long) i) < 0) |
791915db | 363 | return (ctf_set_errno (fp, errno)); |
a30b3e18 NA |
364 | } |
365 | else | |
366 | { | |
595a4d43 | 367 | if (asprintf (&str, "%s (%lx) -> ", sym_name, (unsigned long) i) < 0) |
791915db | 368 | return (ctf_set_errno (fp, errno)); |
a30b3e18 NA |
369 | } |
370 | ||
371 | /* Variable type. */ | |
b4f0e09c NA |
372 | if ((typestr = ctf_dump_format_type (state->cds_fp, type, |
373 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
374 | { |
375 | free (str); | |
a0486bac | 376 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
377 | } |
378 | ||
379 | str = ctf_str_append (str, typestr); | |
380 | free (typestr); | |
381 | ||
382 | ctf_dump_append (state, str); | |
383 | } | |
384 | return 0; | |
385 | } | |
386 | ||
387 | /* Dump all the function entries into the cds_items. (As above, there is no | |
388 | iterator for this section.) */ | |
389 | ||
390 | static int | |
391 | ctf_dump_funcs (ctf_file_t *fp, ctf_dump_state_t *state) | |
392 | { | |
393 | size_t i; | |
394 | ||
395 | for (i = 0; i < fp->ctf_nsyms; i++) | |
396 | { | |
791915db | 397 | char *str; |
a30b3e18 | 398 | char *bit; |
791915db | 399 | const char *err; |
a30b3e18 NA |
400 | const char *sym_name; |
401 | ctf_funcinfo_t fi; | |
402 | ctf_id_t type; | |
403 | size_t j; | |
404 | ctf_id_t *args; | |
405 | ||
a0486bac | 406 | if ((type = ctf_func_info (state->cds_fp, i, &fi)) == CTF_ERR) |
a30b3e18 NA |
407 | switch (ctf_errno (state->cds_fp)) |
408 | { | |
409 | /* Most errors are just an indication that this symbol is not a data | |
410 | symbol, but this one indicates that we were called wrong, on a | |
411 | CTF file with no associated symbol table. */ | |
412 | case ECTF_NOSYMTAB: | |
a0486bac | 413 | return -1; |
a30b3e18 | 414 | case ECTF_NOTDATA: |
d18f9f16 NA |
415 | case ECTF_NOTFUNC: |
416 | case ECTF_NOFUNCDAT: | |
a30b3e18 NA |
417 | continue; |
418 | } | |
419 | if ((args = calloc (fi.ctc_argc, sizeof (ctf_id_t))) == NULL) | |
420 | return (ctf_set_errno (fp, ENOMEM)); | |
421 | ||
422 | /* Return type. */ | |
423 | if ((str = ctf_type_aname (state->cds_fp, type)) == NULL) | |
791915db NA |
424 | { |
425 | err = "look up return type"; | |
426 | goto err; | |
427 | } | |
a30b3e18 NA |
428 | |
429 | str = ctf_str_append (str, " "); | |
a30b3e18 NA |
430 | |
431 | /* Function name. */ | |
432 | ||
433 | sym_name = ctf_lookup_symbol_name (fp, i); | |
434 | if (sym_name[0] == '\0') | |
435 | { | |
c550e7ba | 436 | if (asprintf (&bit, "0x%lx ", (unsigned long) i) < 0) |
a30b3e18 NA |
437 | goto oom; |
438 | } | |
439 | else | |
440 | { | |
c550e7ba | 441 | if (asprintf (&bit, "%s (0x%lx) ", sym_name, (unsigned long) i) < 0) |
a30b3e18 NA |
442 | goto oom; |
443 | } | |
444 | str = ctf_str_append (str, bit); | |
445 | str = ctf_str_append (str, " ("); | |
941accce | 446 | free (bit); |
a30b3e18 NA |
447 | |
448 | /* Function arguments. */ | |
449 | ||
450 | if (ctf_func_args (state->cds_fp, i, fi.ctc_argc, args) < 0) | |
791915db NA |
451 | { |
452 | err = "look up argument type"; | |
453 | goto err; | |
454 | } | |
a30b3e18 NA |
455 | |
456 | for (j = 0; j < fi.ctc_argc; j++) | |
457 | { | |
458 | if ((bit = ctf_type_aname (state->cds_fp, args[j])) == NULL) | |
791915db NA |
459 | { |
460 | err = "look up argument type name"; | |
461 | goto err; | |
462 | } | |
a30b3e18 NA |
463 | str = ctf_str_append (str, bit); |
464 | if ((j < fi.ctc_argc - 1) || (fi.ctc_flags & CTF_FUNC_VARARG)) | |
465 | str = ctf_str_append (str, ", "); | |
466 | free (bit); | |
467 | } | |
468 | ||
469 | if (fi.ctc_flags & CTF_FUNC_VARARG) | |
470 | str = ctf_str_append (str, "..."); | |
471 | str = ctf_str_append (str, ")"); | |
472 | ||
473 | free (args); | |
474 | ctf_dump_append (state, str); | |
475 | continue; | |
476 | ||
477 | oom: | |
478 | free (args); | |
479 | free (str); | |
791915db | 480 | return (ctf_set_errno (fp, errno)); |
a30b3e18 | 481 | err: |
791915db NA |
482 | ctf_dprintf ("Cannot %s dumping function type for symbol 0x%li: %s\n", |
483 | err, (unsigned long) i, | |
484 | ctf_errmsg (ctf_errno (state->cds_fp))); | |
a30b3e18 NA |
485 | free (args); |
486 | free (str); | |
a0486bac | 487 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
488 | } |
489 | return 0; | |
490 | } | |
491 | ||
492 | /* Dump a single variable into the cds_items. */ | |
493 | static int | |
494 | ctf_dump_var (const char *name, ctf_id_t type, void *arg) | |
495 | { | |
496 | char *str; | |
497 | char *typestr; | |
498 | ctf_dump_state_t *state = arg; | |
499 | ||
500 | if (asprintf (&str, "%s -> ", name) < 0) | |
791915db | 501 | return (ctf_set_errno (state->cds_fp, errno)); |
a30b3e18 | 502 | |
b4f0e09c NA |
503 | if ((typestr = ctf_dump_format_type (state->cds_fp, type, |
504 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
505 | { |
506 | free (str); | |
a0486bac | 507 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
508 | } |
509 | ||
510 | str = ctf_str_append (str, typestr); | |
511 | free (typestr); | |
512 | ||
513 | ctf_dump_append (state, str); | |
514 | return 0; | |
515 | } | |
516 | ||
517 | /* Dump a single member into the string in the membstate. */ | |
518 | static int | |
519 | ctf_dump_member (const char *name, ctf_id_t id, unsigned long offset, | |
520 | int depth, void *arg) | |
521 | { | |
522 | ctf_dump_membstate_t *state = arg; | |
523 | char *typestr = NULL; | |
524 | char *bit = NULL; | |
525 | ctf_encoding_t ep; | |
526 | ssize_t i; | |
527 | ||
528 | for (i = 0; i < depth; i++) | |
529 | *state->cdm_str = ctf_str_append (*state->cdm_str, " "); | |
530 | ||
531 | if ((typestr = ctf_type_aname (state->cdm_fp, id)) == NULL) | |
791915db NA |
532 | { |
533 | if (id == 0 || ctf_errno (state->cdm_fp) == ECTF_NONREPRESENTABLE) | |
534 | { | |
535 | if (asprintf (&bit, " [0x%lx] (type not represented in CTF)", | |
536 | offset) < 0) | |
537 | goto oom; | |
538 | ||
539 | *state->cdm_str = ctf_str_append (*state->cdm_str, bit); | |
540 | free (typestr); | |
541 | free (bit); | |
542 | return 0; | |
543 | } | |
544 | ||
545 | goto oom; | |
546 | } | |
a30b3e18 NA |
547 | |
548 | if (asprintf (&bit, " [0x%lx] (ID 0x%lx) (kind %i) %s %s (aligned at 0x%lx", | |
549 | offset, id, ctf_type_kind (state->cdm_fp, id), typestr, name, | |
595a4d43 | 550 | (unsigned long) ctf_type_align (state->cdm_fp, id)) < 0) |
a30b3e18 NA |
551 | goto oom; |
552 | *state->cdm_str = ctf_str_append (*state->cdm_str, bit); | |
553 | free (typestr); | |
554 | free (bit); | |
555 | typestr = NULL; | |
556 | bit = NULL; | |
557 | ||
558 | if ((ctf_type_kind (state->cdm_fp, id) == CTF_K_INTEGER) | |
559 | || (ctf_type_kind (state->cdm_fp, id) == CTF_K_FLOAT) | |
560 | || (ctf_is_slice (state->cdm_fp, id, &ep) == CTF_K_ENUM)) | |
561 | { | |
562 | ctf_type_encoding (state->cdm_fp, id, &ep); | |
563 | if (asprintf (&bit, ", format 0x%x, offset:bits 0x%x:0x%x", ep.cte_format, | |
564 | ep.cte_offset, ep.cte_bits) < 0) | |
565 | goto oom; | |
566 | *state->cdm_str = ctf_str_append (*state->cdm_str, bit); | |
567 | free (bit); | |
568 | bit = NULL; | |
569 | } | |
570 | ||
571 | *state->cdm_str = ctf_str_append (*state->cdm_str, ")\n"); | |
572 | return 0; | |
573 | ||
574 | oom: | |
575 | free (typestr); | |
576 | free (bit); | |
791915db | 577 | return (ctf_set_errno (state->cdm_fp, errno)); |
a30b3e18 NA |
578 | } |
579 | ||
580 | /* Dump a single type into the cds_items. */ | |
a30b3e18 | 581 | static int |
b4f0e09c | 582 | ctf_dump_type (ctf_id_t id, int flag, void *arg) |
a30b3e18 NA |
583 | { |
584 | char *str; | |
791915db | 585 | const char *err; |
a30b3e18 NA |
586 | ctf_dump_state_t *state = arg; |
587 | ctf_dump_membstate_t membstate = { &str, state->cds_fp }; | |
588 | size_t len; | |
589 | ||
b4f0e09c | 590 | if ((str = ctf_dump_format_type (state->cds_fp, id, flag)) == NULL) |
791915db NA |
591 | { |
592 | err = "format type"; | |
593 | goto err; | |
594 | } | |
a30b3e18 NA |
595 | |
596 | str = ctf_str_append (str, "\n"); | |
597 | if ((ctf_type_visit (state->cds_fp, id, ctf_dump_member, &membstate)) < 0) | |
791915db NA |
598 | { |
599 | if (id == 0 || ctf_errno (state->cds_fp) == ECTF_NONREPRESENTABLE) | |
600 | { | |
601 | ctf_dump_append (state, str); | |
602 | return 0; | |
603 | } | |
604 | err = "visit members"; | |
605 | goto err; | |
606 | } | |
a30b3e18 NA |
607 | |
608 | /* Trim off the last linefeed added by ctf_dump_member(). */ | |
609 | len = strlen (str); | |
610 | if (str[len-1] == '\n') | |
611 | str[len-1] = '\0'; | |
612 | ||
613 | ctf_dump_append (state, str); | |
614 | return 0; | |
615 | ||
616 | err: | |
791915db NA |
617 | ctf_dprintf ("Cannot %s dumping type 0x%lx: %s\n", err, id, |
618 | ctf_errmsg (ctf_errno (state->cds_fp))); | |
a30b3e18 | 619 | free (str); |
a0486bac | 620 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
621 | } |
622 | ||
623 | /* Dump the string table into the cds_items. */ | |
624 | ||
625 | static int | |
626 | ctf_dump_str (ctf_file_t *fp, ctf_dump_state_t *state) | |
627 | { | |
628 | const char *s = fp->ctf_str[CTF_STRTAB_0].cts_strs; | |
629 | ||
630 | for (; s < fp->ctf_str[CTF_STRTAB_0].cts_strs + | |
631 | fp->ctf_str[CTF_STRTAB_0].cts_len;) | |
632 | { | |
633 | char *str; | |
595a4d43 NA |
634 | if (asprintf (&str, "%lx: %s", |
635 | (unsigned long) (s - fp->ctf_str[CTF_STRTAB_0].cts_strs), | |
a30b3e18 | 636 | s) < 0) |
791915db | 637 | return (ctf_set_errno (fp, errno)); |
a30b3e18 NA |
638 | ctf_dump_append (state, str); |
639 | s += strlen (s) + 1; | |
640 | } | |
641 | ||
642 | return 0; | |
643 | } | |
644 | ||
645 | /* Dump a particular section of a CTF file, in textual form. Call with a | |
646 | pointer to a NULL STATE: each call emits a dynamically allocated string | |
647 | containing a description of one entity in the specified section, in order. | |
648 | Only the first call (with a NULL state) may vary SECT. Once the CTF section | |
649 | has been entirely dumped, the call returns NULL and frees and annuls the | |
650 | STATE, ready for another section to be dumped. The returned textual content | |
651 | may span multiple lines: between each call the FUNC is called with one | |
652 | textual line at a time, and should return a suitably decorated line (it can | |
653 | allocate a new one and return it if it likes). */ | |
654 | ||
655 | char * | |
656 | ctf_dump (ctf_file_t *fp, ctf_dump_state_t **statep, ctf_sect_names_t sect, | |
657 | ctf_dump_decorate_f *func, void *arg) | |
658 | { | |
659 | char *str; | |
660 | char *line; | |
661 | ctf_dump_state_t *state = NULL; | |
662 | ||
663 | if (*statep == NULL) | |
664 | { | |
665 | /* Data collection. Transforming a call-at-a-time iterator into a | |
666 | return-at-a-time iterator in a language without call/cc is annoying. It | |
667 | is easiest to simply collect everything at once and then return it bit | |
668 | by bit. The first call will take (much) longer than otherwise, but the | |
669 | amortized time needed is the same. */ | |
670 | ||
671 | if ((*statep = ctf_alloc (sizeof (struct ctf_dump_state))) == NULL) | |
672 | { | |
673 | ctf_set_errno (fp, ENOMEM); | |
674 | goto end; | |
675 | } | |
676 | state = *statep; | |
677 | ||
678 | memset (state, 0, sizeof (struct ctf_dump_state)); | |
679 | state->cds_fp = fp; | |
680 | state->cds_sect = sect; | |
681 | ||
682 | switch (sect) | |
683 | { | |
684 | case CTF_SECT_HEADER: | |
9b32cba4 | 685 | ctf_dump_header (fp, state); |
a30b3e18 NA |
686 | break; |
687 | case CTF_SECT_LABEL: | |
688 | if (ctf_label_iter (fp, ctf_dump_label, state) < 0) | |
689 | { | |
690 | if (ctf_errno (fp) != ECTF_NOLABELDATA) | |
691 | goto end; /* errno is set for us. */ | |
692 | ctf_set_errno (fp, 0); | |
693 | } | |
694 | break; | |
695 | case CTF_SECT_OBJT: | |
696 | if (ctf_dump_objts (fp, state) < 0) | |
697 | goto end; /* errno is set for us. */ | |
698 | break; | |
699 | case CTF_SECT_FUNC: | |
700 | if (ctf_dump_funcs (fp, state) < 0) | |
701 | goto end; /* errno is set for us. */ | |
702 | break; | |
703 | case CTF_SECT_VAR: | |
704 | if (ctf_variable_iter (fp, ctf_dump_var, state) < 0) | |
705 | goto end; /* errno is set for us. */ | |
706 | break; | |
707 | case CTF_SECT_TYPE: | |
b4f0e09c | 708 | if (ctf_type_iter_all (fp, ctf_dump_type, state) < 0) |
a30b3e18 NA |
709 | goto end; /* errno is set for us. */ |
710 | break; | |
711 | case CTF_SECT_STR: | |
712 | ctf_dump_str (fp, state); | |
713 | break; | |
714 | default: | |
715 | ctf_set_errno (fp, ECTF_DUMPSECTUNKNOWN); | |
716 | goto end; | |
717 | } | |
718 | } | |
719 | else | |
720 | { | |
721 | state = *statep; | |
722 | ||
723 | if (state->cds_sect != sect) | |
724 | { | |
725 | ctf_set_errno (fp, ECTF_DUMPSECTCHANGED); | |
726 | goto end; | |
727 | } | |
728 | } | |
729 | ||
730 | if (state->cds_current == NULL) | |
731 | state->cds_current = ctf_list_next (&state->cds_items); | |
732 | else | |
733 | state->cds_current = ctf_list_next (state->cds_current); | |
734 | ||
735 | if (state->cds_current == NULL) | |
736 | goto end; | |
737 | ||
738 | /* Hookery. There is some extra complexity to preserve linefeeds within each | |
739 | item while removing linefeeds at the end. */ | |
740 | if (func) | |
741 | { | |
742 | size_t len; | |
743 | ||
744 | str = NULL; | |
745 | for (line = state->cds_current->cdi_item; line && *line; ) | |
746 | { | |
747 | char *nline = line; | |
748 | char *ret; | |
749 | ||
750 | nline = strchr (line, '\n'); | |
751 | if (nline) | |
752 | nline[0] = '\0'; | |
753 | ||
754 | ret = func (sect, line, arg); | |
755 | str = ctf_str_append (str, ret); | |
756 | str = ctf_str_append (str, "\n"); | |
757 | if (ret != line) | |
758 | free (ret); | |
759 | ||
760 | if (nline) | |
761 | { | |
762 | nline[0] = '\n'; | |
763 | nline++; | |
764 | } | |
765 | ||
766 | line = nline; | |
767 | } | |
768 | ||
769 | len = strlen (str); | |
770 | ||
771 | if (str[len-1] == '\n') | |
772 | str[len-1] = '\0'; | |
773 | } | |
774 | else | |
775 | str = strdup (state->cds_current->cdi_item); | |
776 | ||
777 | ctf_set_errno (fp, 0); | |
778 | return str; | |
779 | ||
780 | end: | |
781 | ctf_dump_free (state); | |
782 | ctf_free (state); | |
783 | ctf_set_errno (fp, 0); | |
784 | *statep = NULL; | |
785 | return NULL; | |
786 | } |