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) | |
119 | goto oom; | |
120 | ||
121 | /* Slices get a different print representation. */ | |
122 | ||
123 | if (ctf_is_slice (fp, id, &enc)) | |
124 | { | |
125 | ctf_type_encoding (fp, id, &enc); | |
b4f0e09c NA |
126 | if (asprintf (&bit, " %s%lx: [slice 0x%x:0x%x]%s", |
127 | nonroot_leader, id, enc.cte_offset, enc.cte_bits, | |
128 | nonroot_trailer) < 0) | |
a30b3e18 NA |
129 | goto oom; |
130 | } | |
131 | else | |
132 | { | |
b4f0e09c NA |
133 | if (asprintf (&bit, " %s%lx: %s (size 0x%lx)%s", nonroot_leader, |
134 | id, buf[0] == '\0' ? "(nameless)" : buf, | |
135 | (unsigned long) ctf_type_size (fp, id), | |
136 | nonroot_trailer) < 0) | |
a30b3e18 NA |
137 | goto oom; |
138 | } | |
139 | free (buf); | |
140 | buf = NULL; | |
141 | str = ctf_str_append (str, bit); | |
142 | free (bit); | |
143 | bit = NULL; | |
144 | ||
145 | new_id = ctf_type_reference (fp, id); | |
146 | if (new_id != CTF_ERR) | |
147 | str = ctf_str_append (str, " ->"); | |
148 | } while (new_id != CTF_ERR); | |
149 | ||
150 | if (ctf_errno (fp) != ECTF_NOTREF) | |
151 | { | |
152 | free (str); | |
153 | return NULL; | |
154 | } | |
155 | ||
156 | return str; | |
157 | ||
158 | oom: | |
159 | free (buf); | |
160 | free (str); | |
161 | free (bit); | |
162 | ctf_set_errno (fp, ENOMEM); | |
163 | return NULL; | |
164 | } | |
165 | ||
9b32cba4 NA |
166 | /* Dump one string field from the file header into the cds_items. */ |
167 | static int | |
168 | ctf_dump_header_strfield (ctf_file_t *fp, ctf_dump_state_t *state, | |
169 | const char *name, uint32_t value) | |
170 | { | |
171 | char *str; | |
172 | if (value) | |
173 | { | |
174 | if (asprintf (&str, "%s: %s\n", name, ctf_strptr (fp, value)) < 0) | |
175 | goto err; | |
176 | ctf_dump_append (state, str); | |
177 | } | |
178 | return 0; | |
179 | ||
180 | err: | |
181 | return (ctf_set_errno (fp, -ENOMEM)); | |
182 | } | |
183 | ||
184 | /* Dump one section-offset field from the file header into the cds_items. */ | |
185 | static int | |
186 | ctf_dump_header_sectfield (ctf_file_t *fp, ctf_dump_state_t *state, | |
187 | const char *sect, uint32_t off, uint32_t nextoff) | |
188 | { | |
189 | char *str; | |
190 | if (nextoff - off) | |
191 | { | |
192 | if (asprintf (&str, "%s:\t0x%lx -- 0x%lx (0x%lx bytes)\n", sect, | |
193 | (unsigned long) off, (unsigned long) (nextoff - 1), | |
194 | (unsigned long) (nextoff - off)) < 0) | |
195 | goto err; | |
196 | ctf_dump_append (state, str); | |
197 | } | |
198 | return 0; | |
199 | ||
200 | err: | |
201 | return (ctf_set_errno (fp, -ENOMEM)); | |
202 | } | |
203 | ||
204 | /* Dump the file header into the cds_items. */ | |
205 | static int | |
206 | ctf_dump_header (ctf_file_t *fp, ctf_dump_state_t *state) | |
207 | { | |
208 | char *str; | |
209 | const ctf_header_t *hp = fp->ctf_header; | |
210 | const char *vertab[] = | |
211 | { | |
212 | NULL, "CTF_VERSION_1", | |
213 | "CTF_VERSION_1_UPGRADED_3 (latest format, version 1 type " | |
214 | "boundaries)", | |
215 | "CTF_VERSION_2", | |
216 | "CTF_VERSION_3", NULL | |
217 | }; | |
218 | const char *verstr = NULL; | |
219 | ||
220 | if (asprintf (&str, "Magic number: %x\n", hp->cth_magic) < 0) | |
221 | goto err; | |
222 | ctf_dump_append (state, str); | |
223 | ||
224 | if (hp->cth_version <= CTF_VERSION) | |
225 | verstr = vertab[hp->cth_version]; | |
226 | ||
227 | if (verstr == NULL) | |
228 | verstr = "(not a valid version)"; | |
229 | ||
230 | if (asprintf (&str, "Version: %i (%s)\n", hp->cth_version, | |
231 | verstr) < 0) | |
232 | goto err; | |
233 | ctf_dump_append (state, str); | |
234 | ||
235 | /* Everything else is only printed if present. */ | |
236 | ||
237 | /* The flags are unusual in that they represent the ctf_file_t *in memory*: | |
238 | flags representing compression, etc, are turned off as the file is | |
239 | decompressed. So we store a copy of the flags before they are changed, for | |
240 | the dumper. */ | |
241 | ||
242 | if (fp->ctf_openflags > 0) | |
243 | { | |
244 | if (fp->ctf_openflags) | |
245 | if (asprintf (&str, "Flags: 0x%x (%s)", fp->ctf_openflags, | |
246 | fp->ctf_openflags & CTF_F_COMPRESS ? "CTF_F_COMPRESS" | |
247 | : "") < 0) | |
248 | goto err; | |
249 | ctf_dump_append (state, str); | |
250 | } | |
251 | ||
252 | if (ctf_dump_header_strfield (fp, state, "Parent label", | |
253 | hp->cth_parlabel) < 0) | |
254 | goto err; | |
255 | ||
256 | if (ctf_dump_header_strfield (fp, state, "Parent name", hp->cth_parname) < 0) | |
257 | goto err; | |
258 | ||
259 | if (ctf_dump_header_strfield (fp, state, "Compilation unit name", | |
260 | hp->cth_cuname) < 0) | |
261 | goto err; | |
262 | ||
263 | if (ctf_dump_header_sectfield (fp, state, "Label section", hp->cth_lbloff, | |
264 | hp->cth_objtoff) < 0) | |
265 | goto err; | |
266 | ||
267 | if (ctf_dump_header_sectfield (fp, state, "Data object section", | |
268 | hp->cth_objtoff, hp->cth_funcoff) < 0) | |
269 | goto err; | |
270 | ||
271 | if (ctf_dump_header_sectfield (fp, state, "Function info section", | |
272 | hp->cth_funcoff, hp->cth_varoff) < 0) | |
273 | goto err; | |
274 | ||
275 | if (ctf_dump_header_sectfield (fp, state, "Variable section", | |
276 | hp->cth_varoff, hp->cth_typeoff) < 0) | |
277 | goto err; | |
278 | ||
279 | if (ctf_dump_header_sectfield (fp, state, "Type section", | |
280 | hp->cth_typeoff, hp->cth_stroff) < 0) | |
281 | goto err; | |
282 | ||
283 | if (ctf_dump_header_sectfield (fp, state, "String section", hp->cth_stroff, | |
284 | hp->cth_stroff + hp->cth_strlen + 1) < 0) | |
285 | goto err; | |
286 | ||
287 | return 0; | |
288 | err: | |
289 | return (ctf_set_errno (fp, -ENOMEM)); | |
290 | } | |
291 | ||
a30b3e18 NA |
292 | /* Dump a single label into the cds_items. */ |
293 | ||
294 | static int | |
295 | ctf_dump_label (const char *name, const ctf_lblinfo_t *info, | |
296 | void *arg) | |
297 | { | |
298 | char *str; | |
299 | char *typestr; | |
300 | ctf_dump_state_t *state = arg; | |
301 | ||
302 | if (asprintf (&str, "%s -> ", name) < 0) | |
303 | return (ctf_set_errno (state->cds_fp, ENOMEM)); | |
304 | ||
b4f0e09c NA |
305 | if ((typestr = ctf_dump_format_type (state->cds_fp, info->ctb_type, |
306 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
307 | { |
308 | free (str); | |
a0486bac | 309 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
310 | } |
311 | ||
312 | str = ctf_str_append (str, typestr); | |
313 | free (typestr); | |
314 | ||
315 | ctf_dump_append (state, str); | |
316 | return 0; | |
317 | } | |
318 | ||
319 | /* Dump all the object entries into the cds_items. (There is no iterator for | |
320 | this section, so we just do it in a loop, and this function handles all of | |
321 | them, rather than only one. */ | |
322 | ||
323 | static int | |
324 | ctf_dump_objts (ctf_file_t *fp, ctf_dump_state_t *state) | |
325 | { | |
326 | size_t i; | |
327 | ||
328 | for (i = 0; i < fp->ctf_nsyms; i++) | |
329 | { | |
330 | char *str; | |
331 | char *typestr; | |
332 | const char *sym_name; | |
333 | ctf_id_t type; | |
334 | ||
a0486bac | 335 | if ((type = ctf_lookup_by_symbol (state->cds_fp, i)) == CTF_ERR) |
a30b3e18 NA |
336 | switch (ctf_errno (state->cds_fp)) |
337 | { | |
338 | /* Most errors are just an indication that this symbol is not a data | |
339 | symbol, but this one indicates that we were called wrong, on a | |
340 | CTF file with no associated symbol table. */ | |
341 | case ECTF_NOSYMTAB: | |
a0486bac | 342 | return -1; |
a30b3e18 NA |
343 | case ECTF_NOTDATA: |
344 | case ECTF_NOTYPEDAT: | |
345 | continue; | |
346 | } | |
347 | ||
348 | /* Variable name. */ | |
349 | sym_name = ctf_lookup_symbol_name (fp, i); | |
350 | if (sym_name[0] == '\0') | |
351 | { | |
595a4d43 | 352 | if (asprintf (&str, "%lx -> ", (unsigned long) i) < 0) |
a30b3e18 NA |
353 | return (ctf_set_errno (fp, ENOMEM)); |
354 | } | |
355 | else | |
356 | { | |
595a4d43 | 357 | if (asprintf (&str, "%s (%lx) -> ", sym_name, (unsigned long) i) < 0) |
a30b3e18 NA |
358 | return (ctf_set_errno (fp, ENOMEM)); |
359 | } | |
360 | ||
361 | /* Variable type. */ | |
b4f0e09c NA |
362 | if ((typestr = ctf_dump_format_type (state->cds_fp, type, |
363 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
364 | { |
365 | free (str); | |
a0486bac | 366 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
367 | } |
368 | ||
369 | str = ctf_str_append (str, typestr); | |
370 | free (typestr); | |
371 | ||
372 | ctf_dump_append (state, str); | |
373 | } | |
374 | return 0; | |
375 | } | |
376 | ||
377 | /* Dump all the function entries into the cds_items. (As above, there is no | |
378 | iterator for this section.) */ | |
379 | ||
380 | static int | |
381 | ctf_dump_funcs (ctf_file_t *fp, ctf_dump_state_t *state) | |
382 | { | |
383 | size_t i; | |
384 | ||
385 | for (i = 0; i < fp->ctf_nsyms; i++) | |
386 | { | |
387 | char *str ; | |
388 | char *bit; | |
389 | const char *sym_name; | |
390 | ctf_funcinfo_t fi; | |
391 | ctf_id_t type; | |
392 | size_t j; | |
393 | ctf_id_t *args; | |
394 | ||
a0486bac | 395 | if ((type = ctf_func_info (state->cds_fp, i, &fi)) == CTF_ERR) |
a30b3e18 NA |
396 | switch (ctf_errno (state->cds_fp)) |
397 | { | |
398 | /* Most errors are just an indication that this symbol is not a data | |
399 | symbol, but this one indicates that we were called wrong, on a | |
400 | CTF file with no associated symbol table. */ | |
401 | case ECTF_NOSYMTAB: | |
a0486bac | 402 | return -1; |
a30b3e18 | 403 | case ECTF_NOTDATA: |
d18f9f16 NA |
404 | case ECTF_NOTFUNC: |
405 | case ECTF_NOFUNCDAT: | |
a30b3e18 NA |
406 | continue; |
407 | } | |
408 | if ((args = calloc (fi.ctc_argc, sizeof (ctf_id_t))) == NULL) | |
409 | return (ctf_set_errno (fp, ENOMEM)); | |
410 | ||
411 | /* Return type. */ | |
412 | if ((str = ctf_type_aname (state->cds_fp, type)) == NULL) | |
413 | goto err; | |
414 | ||
415 | str = ctf_str_append (str, " "); | |
a30b3e18 NA |
416 | |
417 | /* Function name. */ | |
418 | ||
419 | sym_name = ctf_lookup_symbol_name (fp, i); | |
420 | if (sym_name[0] == '\0') | |
421 | { | |
c550e7ba | 422 | if (asprintf (&bit, "0x%lx ", (unsigned long) i) < 0) |
a30b3e18 NA |
423 | goto oom; |
424 | } | |
425 | else | |
426 | { | |
c550e7ba | 427 | if (asprintf (&bit, "%s (0x%lx) ", sym_name, (unsigned long) i) < 0) |
a30b3e18 NA |
428 | goto oom; |
429 | } | |
430 | str = ctf_str_append (str, bit); | |
431 | str = ctf_str_append (str, " ("); | |
941accce | 432 | free (bit); |
a30b3e18 NA |
433 | |
434 | /* Function arguments. */ | |
435 | ||
436 | if (ctf_func_args (state->cds_fp, i, fi.ctc_argc, args) < 0) | |
437 | goto err; | |
438 | ||
439 | for (j = 0; j < fi.ctc_argc; j++) | |
440 | { | |
441 | if ((bit = ctf_type_aname (state->cds_fp, args[j])) == NULL) | |
442 | goto err; | |
443 | str = ctf_str_append (str, bit); | |
444 | if ((j < fi.ctc_argc - 1) || (fi.ctc_flags & CTF_FUNC_VARARG)) | |
445 | str = ctf_str_append (str, ", "); | |
446 | free (bit); | |
447 | } | |
448 | ||
449 | if (fi.ctc_flags & CTF_FUNC_VARARG) | |
450 | str = ctf_str_append (str, "..."); | |
451 | str = ctf_str_append (str, ")"); | |
452 | ||
453 | free (args); | |
454 | ctf_dump_append (state, str); | |
455 | continue; | |
456 | ||
457 | oom: | |
458 | free (args); | |
459 | free (str); | |
460 | return (ctf_set_errno (fp, ENOMEM)); | |
461 | err: | |
462 | free (args); | |
463 | free (str); | |
a0486bac | 464 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
465 | } |
466 | return 0; | |
467 | } | |
468 | ||
469 | /* Dump a single variable into the cds_items. */ | |
470 | static int | |
471 | ctf_dump_var (const char *name, ctf_id_t type, void *arg) | |
472 | { | |
473 | char *str; | |
474 | char *typestr; | |
475 | ctf_dump_state_t *state = arg; | |
476 | ||
477 | if (asprintf (&str, "%s -> ", name) < 0) | |
478 | return (ctf_set_errno (state->cds_fp, ENOMEM)); | |
479 | ||
b4f0e09c NA |
480 | if ((typestr = ctf_dump_format_type (state->cds_fp, type, |
481 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
482 | { |
483 | free (str); | |
a0486bac | 484 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
485 | } |
486 | ||
487 | str = ctf_str_append (str, typestr); | |
488 | free (typestr); | |
489 | ||
490 | ctf_dump_append (state, str); | |
491 | return 0; | |
492 | } | |
493 | ||
494 | /* Dump a single member into the string in the membstate. */ | |
495 | static int | |
496 | ctf_dump_member (const char *name, ctf_id_t id, unsigned long offset, | |
497 | int depth, void *arg) | |
498 | { | |
499 | ctf_dump_membstate_t *state = arg; | |
500 | char *typestr = NULL; | |
501 | char *bit = NULL; | |
502 | ctf_encoding_t ep; | |
503 | ssize_t i; | |
504 | ||
505 | for (i = 0; i < depth; i++) | |
506 | *state->cdm_str = ctf_str_append (*state->cdm_str, " "); | |
507 | ||
508 | if ((typestr = ctf_type_aname (state->cdm_fp, id)) == NULL) | |
509 | goto oom; | |
510 | ||
511 | if (asprintf (&bit, " [0x%lx] (ID 0x%lx) (kind %i) %s %s (aligned at 0x%lx", | |
512 | offset, id, ctf_type_kind (state->cdm_fp, id), typestr, name, | |
595a4d43 | 513 | (unsigned long) ctf_type_align (state->cdm_fp, id)) < 0) |
a30b3e18 NA |
514 | goto oom; |
515 | *state->cdm_str = ctf_str_append (*state->cdm_str, bit); | |
516 | free (typestr); | |
517 | free (bit); | |
518 | typestr = NULL; | |
519 | bit = NULL; | |
520 | ||
521 | if ((ctf_type_kind (state->cdm_fp, id) == CTF_K_INTEGER) | |
522 | || (ctf_type_kind (state->cdm_fp, id) == CTF_K_FLOAT) | |
523 | || (ctf_is_slice (state->cdm_fp, id, &ep) == CTF_K_ENUM)) | |
524 | { | |
525 | ctf_type_encoding (state->cdm_fp, id, &ep); | |
526 | if (asprintf (&bit, ", format 0x%x, offset:bits 0x%x:0x%x", ep.cte_format, | |
527 | ep.cte_offset, ep.cte_bits) < 0) | |
528 | goto oom; | |
529 | *state->cdm_str = ctf_str_append (*state->cdm_str, bit); | |
530 | free (bit); | |
531 | bit = NULL; | |
532 | } | |
533 | ||
534 | *state->cdm_str = ctf_str_append (*state->cdm_str, ")\n"); | |
535 | return 0; | |
536 | ||
537 | oom: | |
538 | free (typestr); | |
539 | free (bit); | |
540 | return (ctf_set_errno (state->cdm_fp, ENOMEM)); | |
541 | } | |
542 | ||
543 | /* Dump a single type into the cds_items. */ | |
544 | ||
545 | static int | |
b4f0e09c | 546 | ctf_dump_type (ctf_id_t id, int flag, void *arg) |
a30b3e18 NA |
547 | { |
548 | char *str; | |
549 | ctf_dump_state_t *state = arg; | |
550 | ctf_dump_membstate_t membstate = { &str, state->cds_fp }; | |
551 | size_t len; | |
552 | ||
b4f0e09c | 553 | if ((str = ctf_dump_format_type (state->cds_fp, id, flag)) == NULL) |
a30b3e18 NA |
554 | goto err; |
555 | ||
556 | str = ctf_str_append (str, "\n"); | |
557 | if ((ctf_type_visit (state->cds_fp, id, ctf_dump_member, &membstate)) < 0) | |
558 | goto err; | |
559 | ||
560 | /* Trim off the last linefeed added by ctf_dump_member(). */ | |
561 | len = strlen (str); | |
562 | if (str[len-1] == '\n') | |
563 | str[len-1] = '\0'; | |
564 | ||
565 | ctf_dump_append (state, str); | |
566 | return 0; | |
567 | ||
568 | err: | |
569 | free (str); | |
a0486bac | 570 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
571 | } |
572 | ||
573 | /* Dump the string table into the cds_items. */ | |
574 | ||
575 | static int | |
576 | ctf_dump_str (ctf_file_t *fp, ctf_dump_state_t *state) | |
577 | { | |
578 | const char *s = fp->ctf_str[CTF_STRTAB_0].cts_strs; | |
579 | ||
580 | for (; s < fp->ctf_str[CTF_STRTAB_0].cts_strs + | |
581 | fp->ctf_str[CTF_STRTAB_0].cts_len;) | |
582 | { | |
583 | char *str; | |
595a4d43 NA |
584 | if (asprintf (&str, "%lx: %s", |
585 | (unsigned long) (s - fp->ctf_str[CTF_STRTAB_0].cts_strs), | |
a30b3e18 NA |
586 | s) < 0) |
587 | return (ctf_set_errno (fp, ENOMEM)); | |
588 | ctf_dump_append (state, str); | |
589 | s += strlen (s) + 1; | |
590 | } | |
591 | ||
592 | return 0; | |
593 | } | |
594 | ||
595 | /* Dump a particular section of a CTF file, in textual form. Call with a | |
596 | pointer to a NULL STATE: each call emits a dynamically allocated string | |
597 | containing a description of one entity in the specified section, in order. | |
598 | Only the first call (with a NULL state) may vary SECT. Once the CTF section | |
599 | has been entirely dumped, the call returns NULL and frees and annuls the | |
600 | STATE, ready for another section to be dumped. The returned textual content | |
601 | may span multiple lines: between each call the FUNC is called with one | |
602 | textual line at a time, and should return a suitably decorated line (it can | |
603 | allocate a new one and return it if it likes). */ | |
604 | ||
605 | char * | |
606 | ctf_dump (ctf_file_t *fp, ctf_dump_state_t **statep, ctf_sect_names_t sect, | |
607 | ctf_dump_decorate_f *func, void *arg) | |
608 | { | |
609 | char *str; | |
610 | char *line; | |
611 | ctf_dump_state_t *state = NULL; | |
612 | ||
613 | if (*statep == NULL) | |
614 | { | |
615 | /* Data collection. Transforming a call-at-a-time iterator into a | |
616 | return-at-a-time iterator in a language without call/cc is annoying. It | |
617 | is easiest to simply collect everything at once and then return it bit | |
618 | by bit. The first call will take (much) longer than otherwise, but the | |
619 | amortized time needed is the same. */ | |
620 | ||
621 | if ((*statep = ctf_alloc (sizeof (struct ctf_dump_state))) == NULL) | |
622 | { | |
623 | ctf_set_errno (fp, ENOMEM); | |
624 | goto end; | |
625 | } | |
626 | state = *statep; | |
627 | ||
628 | memset (state, 0, sizeof (struct ctf_dump_state)); | |
629 | state->cds_fp = fp; | |
630 | state->cds_sect = sect; | |
631 | ||
632 | switch (sect) | |
633 | { | |
634 | case CTF_SECT_HEADER: | |
9b32cba4 | 635 | ctf_dump_header (fp, state); |
a30b3e18 NA |
636 | break; |
637 | case CTF_SECT_LABEL: | |
638 | if (ctf_label_iter (fp, ctf_dump_label, state) < 0) | |
639 | { | |
640 | if (ctf_errno (fp) != ECTF_NOLABELDATA) | |
641 | goto end; /* errno is set for us. */ | |
642 | ctf_set_errno (fp, 0); | |
643 | } | |
644 | break; | |
645 | case CTF_SECT_OBJT: | |
646 | if (ctf_dump_objts (fp, state) < 0) | |
647 | goto end; /* errno is set for us. */ | |
648 | break; | |
649 | case CTF_SECT_FUNC: | |
650 | if (ctf_dump_funcs (fp, state) < 0) | |
651 | goto end; /* errno is set for us. */ | |
652 | break; | |
653 | case CTF_SECT_VAR: | |
654 | if (ctf_variable_iter (fp, ctf_dump_var, state) < 0) | |
655 | goto end; /* errno is set for us. */ | |
656 | break; | |
657 | case CTF_SECT_TYPE: | |
b4f0e09c | 658 | if (ctf_type_iter_all (fp, ctf_dump_type, state) < 0) |
a30b3e18 NA |
659 | goto end; /* errno is set for us. */ |
660 | break; | |
661 | case CTF_SECT_STR: | |
662 | ctf_dump_str (fp, state); | |
663 | break; | |
664 | default: | |
665 | ctf_set_errno (fp, ECTF_DUMPSECTUNKNOWN); | |
666 | goto end; | |
667 | } | |
668 | } | |
669 | else | |
670 | { | |
671 | state = *statep; | |
672 | ||
673 | if (state->cds_sect != sect) | |
674 | { | |
675 | ctf_set_errno (fp, ECTF_DUMPSECTCHANGED); | |
676 | goto end; | |
677 | } | |
678 | } | |
679 | ||
680 | if (state->cds_current == NULL) | |
681 | state->cds_current = ctf_list_next (&state->cds_items); | |
682 | else | |
683 | state->cds_current = ctf_list_next (state->cds_current); | |
684 | ||
685 | if (state->cds_current == NULL) | |
686 | goto end; | |
687 | ||
688 | /* Hookery. There is some extra complexity to preserve linefeeds within each | |
689 | item while removing linefeeds at the end. */ | |
690 | if (func) | |
691 | { | |
692 | size_t len; | |
693 | ||
694 | str = NULL; | |
695 | for (line = state->cds_current->cdi_item; line && *line; ) | |
696 | { | |
697 | char *nline = line; | |
698 | char *ret; | |
699 | ||
700 | nline = strchr (line, '\n'); | |
701 | if (nline) | |
702 | nline[0] = '\0'; | |
703 | ||
704 | ret = func (sect, line, arg); | |
705 | str = ctf_str_append (str, ret); | |
706 | str = ctf_str_append (str, "\n"); | |
707 | if (ret != line) | |
708 | free (ret); | |
709 | ||
710 | if (nline) | |
711 | { | |
712 | nline[0] = '\n'; | |
713 | nline++; | |
714 | } | |
715 | ||
716 | line = nline; | |
717 | } | |
718 | ||
719 | len = strlen (str); | |
720 | ||
721 | if (str[len-1] == '\n') | |
722 | str[len-1] = '\0'; | |
723 | } | |
724 | else | |
725 | str = strdup (state->cds_current->cdi_item); | |
726 | ||
727 | ctf_set_errno (fp, 0); | |
728 | return str; | |
729 | ||
730 | end: | |
731 | ctf_dump_free (state); | |
732 | ctf_free (state); | |
733 | ctf_set_errno (fp, 0); | |
734 | *statep = NULL; | |
735 | return NULL; | |
736 | } |