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; | |
39 | ctf_file_t *cds_fp; | |
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; | |
49 | ctf_file_t *cdm_fp; | |
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 | ||
82 | /* Slices need special handling to distinguish them from their referenced | |
83 | type. */ | |
84 | ||
85 | static int | |
86 | ctf_is_slice (ctf_file_t *fp, ctf_id_t id, ctf_encoding_t *enc) | |
87 | { | |
88 | int kind = ctf_type_kind (fp, id); | |
89 | ||
90 | return (((kind == CTF_K_INTEGER) || (kind == CTF_K_ENUM) | |
91 | || (kind == CTF_K_FLOAT)) | |
92 | && ctf_type_reference (fp, id) != CTF_ERR | |
a0486bac | 93 | && ctf_type_encoding (fp, id, enc) == 0); |
a30b3e18 NA |
94 | } |
95 | ||
96 | /* Return a dump for a single type, without member info: but do show the | |
97 | type's references. */ | |
98 | ||
99 | static char * | |
b4f0e09c | 100 | ctf_dump_format_type (ctf_file_t *fp, ctf_id_t id, int flag) |
a30b3e18 NA |
101 | { |
102 | ctf_id_t new_id; | |
103 | char *str = NULL, *bit = NULL, *buf = NULL; | |
104 | ||
105 | new_id = id; | |
106 | do | |
107 | { | |
108 | ctf_encoding_t enc; | |
b4f0e09c NA |
109 | const char *nonroot_leader = ""; |
110 | const char *nonroot_trailer = ""; | |
a30b3e18 NA |
111 | |
112 | id = new_id; | |
b4f0e09c NA |
113 | if (flag == CTF_ADD_NONROOT) |
114 | { | |
115 | nonroot_leader = "{"; | |
116 | nonroot_trailer = "}"; | |
117 | } | |
118 | ||
a30b3e18 NA |
119 | buf = ctf_type_aname (fp, id); |
120 | if (!buf) | |
791915db NA |
121 | { |
122 | if (id == 0 || ctf_errno (fp) == ECTF_NONREPRESENTABLE) | |
123 | { | |
9323dd86 | 124 | str = str_append (str, " (type not represented in CTF)"); |
791915db NA |
125 | ctf_set_errno (fp, ECTF_NOTREF); |
126 | break; | |
127 | } | |
128 | ||
129 | goto err; | |
130 | } | |
a30b3e18 NA |
131 | |
132 | /* Slices get a different print representation. */ | |
133 | ||
134 | if (ctf_is_slice (fp, id, &enc)) | |
135 | { | |
136 | ctf_type_encoding (fp, id, &enc); | |
b4f0e09c NA |
137 | if (asprintf (&bit, " %s%lx: [slice 0x%x:0x%x]%s", |
138 | nonroot_leader, id, enc.cte_offset, enc.cte_bits, | |
139 | nonroot_trailer) < 0) | |
a30b3e18 NA |
140 | goto oom; |
141 | } | |
142 | else | |
143 | { | |
b4f0e09c NA |
144 | if (asprintf (&bit, " %s%lx: %s (size 0x%lx)%s", nonroot_leader, |
145 | id, buf[0] == '\0' ? "(nameless)" : buf, | |
146 | (unsigned long) ctf_type_size (fp, id), | |
147 | nonroot_trailer) < 0) | |
a30b3e18 NA |
148 | goto oom; |
149 | } | |
150 | free (buf); | |
151 | buf = NULL; | |
9323dd86 | 152 | str = str_append (str, bit); |
a30b3e18 NA |
153 | free (bit); |
154 | bit = NULL; | |
155 | ||
156 | new_id = ctf_type_reference (fp, id); | |
157 | if (new_id != CTF_ERR) | |
9323dd86 | 158 | str = str_append (str, " ->"); |
a30b3e18 NA |
159 | } while (new_id != CTF_ERR); |
160 | ||
161 | if (ctf_errno (fp) != ECTF_NOTREF) | |
162 | { | |
163 | free (str); | |
164 | return NULL; | |
165 | } | |
166 | ||
167 | return str; | |
168 | ||
169 | oom: | |
791915db NA |
170 | ctf_set_errno (fp, errno); |
171 | err: | |
a30b3e18 NA |
172 | free (buf); |
173 | free (str); | |
174 | free (bit); | |
a30b3e18 NA |
175 | return NULL; |
176 | } | |
177 | ||
9b32cba4 NA |
178 | /* Dump one string field from the file header into the cds_items. */ |
179 | static int | |
180 | ctf_dump_header_strfield (ctf_file_t *fp, ctf_dump_state_t *state, | |
181 | const char *name, uint32_t value) | |
182 | { | |
183 | char *str; | |
184 | if (value) | |
185 | { | |
186 | if (asprintf (&str, "%s: %s\n", name, ctf_strptr (fp, value)) < 0) | |
187 | goto err; | |
188 | ctf_dump_append (state, str); | |
189 | } | |
190 | return 0; | |
191 | ||
192 | err: | |
791915db | 193 | return (ctf_set_errno (fp, errno)); |
9b32cba4 NA |
194 | } |
195 | ||
196 | /* Dump one section-offset field from the file header into the cds_items. */ | |
197 | static int | |
198 | ctf_dump_header_sectfield (ctf_file_t *fp, ctf_dump_state_t *state, | |
199 | const char *sect, uint32_t off, uint32_t nextoff) | |
200 | { | |
201 | char *str; | |
202 | if (nextoff - off) | |
203 | { | |
204 | if (asprintf (&str, "%s:\t0x%lx -- 0x%lx (0x%lx bytes)\n", sect, | |
205 | (unsigned long) off, (unsigned long) (nextoff - 1), | |
206 | (unsigned long) (nextoff - off)) < 0) | |
207 | goto err; | |
208 | ctf_dump_append (state, str); | |
209 | } | |
210 | return 0; | |
211 | ||
212 | err: | |
791915db | 213 | return (ctf_set_errno (fp, errno)); |
9b32cba4 NA |
214 | } |
215 | ||
216 | /* Dump the file header into the cds_items. */ | |
217 | static int | |
218 | ctf_dump_header (ctf_file_t *fp, ctf_dump_state_t *state) | |
219 | { | |
220 | char *str; | |
221 | const ctf_header_t *hp = fp->ctf_header; | |
222 | const char *vertab[] = | |
223 | { | |
224 | NULL, "CTF_VERSION_1", | |
225 | "CTF_VERSION_1_UPGRADED_3 (latest format, version 1 type " | |
226 | "boundaries)", | |
227 | "CTF_VERSION_2", | |
228 | "CTF_VERSION_3", NULL | |
229 | }; | |
230 | const char *verstr = NULL; | |
231 | ||
232 | if (asprintf (&str, "Magic number: %x\n", hp->cth_magic) < 0) | |
233 | goto err; | |
234 | ctf_dump_append (state, str); | |
235 | ||
236 | if (hp->cth_version <= CTF_VERSION) | |
237 | verstr = vertab[hp->cth_version]; | |
238 | ||
239 | if (verstr == NULL) | |
240 | verstr = "(not a valid version)"; | |
241 | ||
242 | if (asprintf (&str, "Version: %i (%s)\n", hp->cth_version, | |
243 | verstr) < 0) | |
244 | goto err; | |
245 | ctf_dump_append (state, str); | |
246 | ||
247 | /* Everything else is only printed if present. */ | |
248 | ||
249 | /* The flags are unusual in that they represent the ctf_file_t *in memory*: | |
250 | flags representing compression, etc, are turned off as the file is | |
251 | decompressed. So we store a copy of the flags before they are changed, for | |
252 | the dumper. */ | |
253 | ||
254 | if (fp->ctf_openflags > 0) | |
255 | { | |
256 | if (fp->ctf_openflags) | |
257 | if (asprintf (&str, "Flags: 0x%x (%s)", fp->ctf_openflags, | |
258 | fp->ctf_openflags & CTF_F_COMPRESS ? "CTF_F_COMPRESS" | |
259 | : "") < 0) | |
260 | goto err; | |
261 | ctf_dump_append (state, str); | |
262 | } | |
263 | ||
264 | if (ctf_dump_header_strfield (fp, state, "Parent label", | |
265 | hp->cth_parlabel) < 0) | |
266 | goto err; | |
267 | ||
268 | if (ctf_dump_header_strfield (fp, state, "Parent name", hp->cth_parname) < 0) | |
269 | goto err; | |
270 | ||
271 | if (ctf_dump_header_strfield (fp, state, "Compilation unit name", | |
272 | hp->cth_cuname) < 0) | |
273 | goto err; | |
274 | ||
275 | if (ctf_dump_header_sectfield (fp, state, "Label section", hp->cth_lbloff, | |
276 | hp->cth_objtoff) < 0) | |
277 | goto err; | |
278 | ||
279 | if (ctf_dump_header_sectfield (fp, state, "Data object section", | |
280 | hp->cth_objtoff, hp->cth_funcoff) < 0) | |
281 | goto err; | |
282 | ||
283 | if (ctf_dump_header_sectfield (fp, state, "Function info section", | |
284 | hp->cth_funcoff, hp->cth_varoff) < 0) | |
285 | goto err; | |
286 | ||
287 | if (ctf_dump_header_sectfield (fp, state, "Variable section", | |
288 | hp->cth_varoff, hp->cth_typeoff) < 0) | |
289 | goto err; | |
290 | ||
291 | if (ctf_dump_header_sectfield (fp, state, "Type section", | |
292 | hp->cth_typeoff, hp->cth_stroff) < 0) | |
293 | goto err; | |
294 | ||
295 | if (ctf_dump_header_sectfield (fp, state, "String section", hp->cth_stroff, | |
296 | hp->cth_stroff + hp->cth_strlen + 1) < 0) | |
297 | goto err; | |
298 | ||
299 | return 0; | |
300 | err: | |
791915db | 301 | return (ctf_set_errno (fp, errno)); |
9b32cba4 NA |
302 | } |
303 | ||
a30b3e18 NA |
304 | /* Dump a single label into the cds_items. */ |
305 | ||
306 | static int | |
307 | ctf_dump_label (const char *name, const ctf_lblinfo_t *info, | |
308 | void *arg) | |
309 | { | |
310 | char *str; | |
311 | char *typestr; | |
312 | ctf_dump_state_t *state = arg; | |
313 | ||
314 | if (asprintf (&str, "%s -> ", name) < 0) | |
791915db | 315 | return (ctf_set_errno (state->cds_fp, errno)); |
a30b3e18 | 316 | |
b4f0e09c NA |
317 | if ((typestr = ctf_dump_format_type (state->cds_fp, info->ctb_type, |
318 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
319 | { |
320 | free (str); | |
a0486bac | 321 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
322 | } |
323 | ||
9323dd86 | 324 | str = str_append (str, typestr); |
a30b3e18 NA |
325 | free (typestr); |
326 | ||
327 | ctf_dump_append (state, str); | |
328 | return 0; | |
329 | } | |
330 | ||
331 | /* Dump all the object entries into the cds_items. (There is no iterator for | |
332 | this section, so we just do it in a loop, and this function handles all of | |
333 | them, rather than only one. */ | |
334 | ||
335 | static int | |
336 | ctf_dump_objts (ctf_file_t *fp, ctf_dump_state_t *state) | |
337 | { | |
338 | size_t i; | |
339 | ||
340 | for (i = 0; i < fp->ctf_nsyms; i++) | |
341 | { | |
342 | char *str; | |
343 | char *typestr; | |
344 | const char *sym_name; | |
345 | ctf_id_t type; | |
346 | ||
a0486bac | 347 | if ((type = ctf_lookup_by_symbol (state->cds_fp, i)) == CTF_ERR) |
a30b3e18 NA |
348 | switch (ctf_errno (state->cds_fp)) |
349 | { | |
350 | /* Most errors are just an indication that this symbol is not a data | |
351 | symbol, but this one indicates that we were called wrong, on a | |
352 | CTF file with no associated symbol table. */ | |
353 | case ECTF_NOSYMTAB: | |
a0486bac | 354 | return -1; |
a30b3e18 NA |
355 | case ECTF_NOTDATA: |
356 | case ECTF_NOTYPEDAT: | |
357 | continue; | |
358 | } | |
359 | ||
360 | /* Variable name. */ | |
361 | sym_name = ctf_lookup_symbol_name (fp, i); | |
362 | if (sym_name[0] == '\0') | |
363 | { | |
595a4d43 | 364 | if (asprintf (&str, "%lx -> ", (unsigned long) i) < 0) |
791915db | 365 | return (ctf_set_errno (fp, errno)); |
a30b3e18 NA |
366 | } |
367 | else | |
368 | { | |
595a4d43 | 369 | if (asprintf (&str, "%s (%lx) -> ", sym_name, (unsigned long) i) < 0) |
791915db | 370 | return (ctf_set_errno (fp, errno)); |
a30b3e18 NA |
371 | } |
372 | ||
373 | /* Variable type. */ | |
b4f0e09c NA |
374 | if ((typestr = ctf_dump_format_type (state->cds_fp, type, |
375 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
376 | { |
377 | free (str); | |
a0486bac | 378 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
379 | } |
380 | ||
9323dd86 | 381 | str = str_append (str, typestr); |
a30b3e18 NA |
382 | free (typestr); |
383 | ||
384 | ctf_dump_append (state, str); | |
385 | } | |
386 | return 0; | |
387 | } | |
388 | ||
389 | /* Dump all the function entries into the cds_items. (As above, there is no | |
390 | iterator for this section.) */ | |
391 | ||
392 | static int | |
393 | ctf_dump_funcs (ctf_file_t *fp, ctf_dump_state_t *state) | |
394 | { | |
395 | size_t i; | |
396 | ||
397 | for (i = 0; i < fp->ctf_nsyms; i++) | |
398 | { | |
791915db | 399 | char *str; |
a30b3e18 | 400 | char *bit; |
791915db | 401 | const char *err; |
a30b3e18 NA |
402 | const char *sym_name; |
403 | ctf_funcinfo_t fi; | |
404 | ctf_id_t type; | |
405 | size_t j; | |
406 | ctf_id_t *args; | |
407 | ||
a0486bac | 408 | if ((type = ctf_func_info (state->cds_fp, i, &fi)) == CTF_ERR) |
a30b3e18 NA |
409 | switch (ctf_errno (state->cds_fp)) |
410 | { | |
411 | /* Most errors are just an indication that this symbol is not a data | |
412 | symbol, but this one indicates that we were called wrong, on a | |
413 | CTF file with no associated symbol table. */ | |
414 | case ECTF_NOSYMTAB: | |
a0486bac | 415 | return -1; |
a30b3e18 | 416 | case ECTF_NOTDATA: |
d18f9f16 NA |
417 | case ECTF_NOTFUNC: |
418 | case ECTF_NOFUNCDAT: | |
a30b3e18 NA |
419 | continue; |
420 | } | |
421 | if ((args = calloc (fi.ctc_argc, sizeof (ctf_id_t))) == NULL) | |
422 | return (ctf_set_errno (fp, ENOMEM)); | |
423 | ||
424 | /* Return type. */ | |
425 | if ((str = ctf_type_aname (state->cds_fp, type)) == NULL) | |
791915db NA |
426 | { |
427 | err = "look up return type"; | |
428 | goto err; | |
429 | } | |
a30b3e18 | 430 | |
9323dd86 | 431 | str = str_append (str, " "); |
a30b3e18 NA |
432 | |
433 | /* Function name. */ | |
434 | ||
435 | sym_name = ctf_lookup_symbol_name (fp, i); | |
436 | if (sym_name[0] == '\0') | |
437 | { | |
c550e7ba | 438 | if (asprintf (&bit, "0x%lx ", (unsigned long) i) < 0) |
a30b3e18 NA |
439 | goto oom; |
440 | } | |
441 | else | |
442 | { | |
c550e7ba | 443 | if (asprintf (&bit, "%s (0x%lx) ", sym_name, (unsigned long) i) < 0) |
a30b3e18 NA |
444 | goto oom; |
445 | } | |
9323dd86 NA |
446 | str = str_append (str, bit); |
447 | str = str_append (str, " ("); | |
941accce | 448 | free (bit); |
a30b3e18 NA |
449 | |
450 | /* Function arguments. */ | |
451 | ||
452 | if (ctf_func_args (state->cds_fp, i, fi.ctc_argc, args) < 0) | |
791915db NA |
453 | { |
454 | err = "look up argument type"; | |
455 | goto err; | |
456 | } | |
a30b3e18 NA |
457 | |
458 | for (j = 0; j < fi.ctc_argc; j++) | |
459 | { | |
460 | if ((bit = ctf_type_aname (state->cds_fp, args[j])) == NULL) | |
791915db NA |
461 | { |
462 | err = "look up argument type name"; | |
463 | goto err; | |
464 | } | |
9323dd86 | 465 | str = str_append (str, bit); |
a30b3e18 | 466 | if ((j < fi.ctc_argc - 1) || (fi.ctc_flags & CTF_FUNC_VARARG)) |
9323dd86 | 467 | str = str_append (str, ", "); |
a30b3e18 NA |
468 | free (bit); |
469 | } | |
470 | ||
471 | if (fi.ctc_flags & CTF_FUNC_VARARG) | |
9323dd86 NA |
472 | str = str_append (str, "..."); |
473 | str = str_append (str, ")"); | |
a30b3e18 NA |
474 | |
475 | free (args); | |
476 | ctf_dump_append (state, str); | |
477 | continue; | |
478 | ||
479 | oom: | |
480 | free (args); | |
481 | free (str); | |
791915db | 482 | return (ctf_set_errno (fp, errno)); |
a30b3e18 | 483 | err: |
791915db NA |
484 | ctf_dprintf ("Cannot %s dumping function type for symbol 0x%li: %s\n", |
485 | err, (unsigned long) i, | |
486 | ctf_errmsg (ctf_errno (state->cds_fp))); | |
a30b3e18 NA |
487 | free (args); |
488 | free (str); | |
a0486bac | 489 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
490 | } |
491 | return 0; | |
492 | } | |
493 | ||
494 | /* Dump a single variable into the cds_items. */ | |
495 | static int | |
496 | ctf_dump_var (const char *name, ctf_id_t type, void *arg) | |
497 | { | |
498 | char *str; | |
499 | char *typestr; | |
500 | ctf_dump_state_t *state = arg; | |
501 | ||
502 | if (asprintf (&str, "%s -> ", name) < 0) | |
791915db | 503 | return (ctf_set_errno (state->cds_fp, errno)); |
a30b3e18 | 504 | |
b4f0e09c NA |
505 | if ((typestr = ctf_dump_format_type (state->cds_fp, type, |
506 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
507 | { |
508 | free (str); | |
a0486bac | 509 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
510 | } |
511 | ||
9323dd86 | 512 | str = str_append (str, typestr); |
a30b3e18 NA |
513 | free (typestr); |
514 | ||
515 | ctf_dump_append (state, str); | |
516 | return 0; | |
517 | } | |
518 | ||
519 | /* Dump a single member into the string in the membstate. */ | |
520 | static int | |
521 | ctf_dump_member (const char *name, ctf_id_t id, unsigned long offset, | |
522 | int depth, void *arg) | |
523 | { | |
524 | ctf_dump_membstate_t *state = arg; | |
525 | char *typestr = NULL; | |
526 | char *bit = NULL; | |
527 | ctf_encoding_t ep; | |
528 | ssize_t i; | |
529 | ||
530 | for (i = 0; i < depth; i++) | |
9323dd86 | 531 | *state->cdm_str = str_append (*state->cdm_str, " "); |
a30b3e18 NA |
532 | |
533 | if ((typestr = ctf_type_aname (state->cdm_fp, id)) == NULL) | |
791915db NA |
534 | { |
535 | if (id == 0 || ctf_errno (state->cdm_fp) == ECTF_NONREPRESENTABLE) | |
536 | { | |
537 | if (asprintf (&bit, " [0x%lx] (type not represented in CTF)", | |
538 | offset) < 0) | |
539 | goto oom; | |
540 | ||
9323dd86 | 541 | *state->cdm_str = str_append (*state->cdm_str, bit); |
791915db NA |
542 | free (typestr); |
543 | free (bit); | |
544 | return 0; | |
545 | } | |
546 | ||
547 | goto oom; | |
548 | } | |
a30b3e18 NA |
549 | |
550 | if (asprintf (&bit, " [0x%lx] (ID 0x%lx) (kind %i) %s %s (aligned at 0x%lx", | |
551 | offset, id, ctf_type_kind (state->cdm_fp, id), typestr, name, | |
595a4d43 | 552 | (unsigned long) ctf_type_align (state->cdm_fp, id)) < 0) |
a30b3e18 | 553 | goto oom; |
9323dd86 | 554 | *state->cdm_str = str_append (*state->cdm_str, bit); |
a30b3e18 NA |
555 | free (typestr); |
556 | free (bit); | |
557 | typestr = NULL; | |
558 | bit = NULL; | |
559 | ||
560 | if ((ctf_type_kind (state->cdm_fp, id) == CTF_K_INTEGER) | |
561 | || (ctf_type_kind (state->cdm_fp, id) == CTF_K_FLOAT) | |
562 | || (ctf_is_slice (state->cdm_fp, id, &ep) == CTF_K_ENUM)) | |
563 | { | |
564 | ctf_type_encoding (state->cdm_fp, id, &ep); | |
565 | if (asprintf (&bit, ", format 0x%x, offset:bits 0x%x:0x%x", ep.cte_format, | |
566 | ep.cte_offset, ep.cte_bits) < 0) | |
567 | goto oom; | |
9323dd86 | 568 | *state->cdm_str = str_append (*state->cdm_str, bit); |
a30b3e18 NA |
569 | free (bit); |
570 | bit = NULL; | |
571 | } | |
572 | ||
9323dd86 | 573 | *state->cdm_str = str_append (*state->cdm_str, ")\n"); |
a30b3e18 NA |
574 | return 0; |
575 | ||
576 | oom: | |
577 | free (typestr); | |
578 | free (bit); | |
791915db | 579 | return (ctf_set_errno (state->cdm_fp, errno)); |
a30b3e18 NA |
580 | } |
581 | ||
582 | /* Dump a single type into the cds_items. */ | |
a30b3e18 | 583 | static int |
b4f0e09c | 584 | ctf_dump_type (ctf_id_t id, int flag, void *arg) |
a30b3e18 NA |
585 | { |
586 | char *str; | |
791915db | 587 | const char *err; |
a30b3e18 NA |
588 | ctf_dump_state_t *state = arg; |
589 | ctf_dump_membstate_t membstate = { &str, state->cds_fp }; | |
590 | size_t len; | |
591 | ||
b4f0e09c | 592 | if ((str = ctf_dump_format_type (state->cds_fp, id, flag)) == NULL) |
791915db NA |
593 | { |
594 | err = "format type"; | |
595 | goto err; | |
596 | } | |
a30b3e18 | 597 | |
9323dd86 | 598 | str = str_append (str, "\n"); |
a30b3e18 | 599 | if ((ctf_type_visit (state->cds_fp, id, ctf_dump_member, &membstate)) < 0) |
791915db NA |
600 | { |
601 | if (id == 0 || ctf_errno (state->cds_fp) == ECTF_NONREPRESENTABLE) | |
602 | { | |
603 | ctf_dump_append (state, str); | |
604 | return 0; | |
605 | } | |
606 | err = "visit members"; | |
607 | goto err; | |
608 | } | |
a30b3e18 NA |
609 | |
610 | /* Trim off the last linefeed added by ctf_dump_member(). */ | |
611 | len = strlen (str); | |
612 | if (str[len-1] == '\n') | |
613 | str[len-1] = '\0'; | |
614 | ||
615 | ctf_dump_append (state, str); | |
616 | return 0; | |
617 | ||
618 | err: | |
791915db NA |
619 | ctf_dprintf ("Cannot %s dumping type 0x%lx: %s\n", err, id, |
620 | ctf_errmsg (ctf_errno (state->cds_fp))); | |
a30b3e18 | 621 | free (str); |
a0486bac | 622 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
623 | } |
624 | ||
625 | /* Dump the string table into the cds_items. */ | |
626 | ||
627 | static int | |
628 | ctf_dump_str (ctf_file_t *fp, ctf_dump_state_t *state) | |
629 | { | |
630 | const char *s = fp->ctf_str[CTF_STRTAB_0].cts_strs; | |
631 | ||
632 | for (; s < fp->ctf_str[CTF_STRTAB_0].cts_strs + | |
633 | fp->ctf_str[CTF_STRTAB_0].cts_len;) | |
634 | { | |
635 | char *str; | |
595a4d43 NA |
636 | if (asprintf (&str, "%lx: %s", |
637 | (unsigned long) (s - fp->ctf_str[CTF_STRTAB_0].cts_strs), | |
a30b3e18 | 638 | s) < 0) |
791915db | 639 | return (ctf_set_errno (fp, errno)); |
a30b3e18 NA |
640 | ctf_dump_append (state, str); |
641 | s += strlen (s) + 1; | |
642 | } | |
643 | ||
644 | return 0; | |
645 | } | |
646 | ||
647 | /* Dump a particular section of a CTF file, in textual form. Call with a | |
648 | pointer to a NULL STATE: each call emits a dynamically allocated string | |
649 | containing a description of one entity in the specified section, in order. | |
650 | Only the first call (with a NULL state) may vary SECT. Once the CTF section | |
651 | has been entirely dumped, the call returns NULL and frees and annuls the | |
652 | STATE, ready for another section to be dumped. The returned textual content | |
653 | may span multiple lines: between each call the FUNC is called with one | |
654 | textual line at a time, and should return a suitably decorated line (it can | |
655 | allocate a new one and return it if it likes). */ | |
656 | ||
657 | char * | |
658 | ctf_dump (ctf_file_t *fp, ctf_dump_state_t **statep, ctf_sect_names_t sect, | |
659 | ctf_dump_decorate_f *func, void *arg) | |
660 | { | |
661 | char *str; | |
662 | char *line; | |
663 | ctf_dump_state_t *state = NULL; | |
664 | ||
665 | if (*statep == NULL) | |
666 | { | |
667 | /* Data collection. Transforming a call-at-a-time iterator into a | |
668 | return-at-a-time iterator in a language without call/cc is annoying. It | |
669 | is easiest to simply collect everything at once and then return it bit | |
670 | by bit. The first call will take (much) longer than otherwise, but the | |
671 | amortized time needed is the same. */ | |
672 | ||
de07e349 | 673 | if ((*statep = malloc (sizeof (struct ctf_dump_state))) == NULL) |
a30b3e18 NA |
674 | { |
675 | ctf_set_errno (fp, ENOMEM); | |
676 | goto end; | |
677 | } | |
678 | state = *statep; | |
679 | ||
680 | memset (state, 0, sizeof (struct ctf_dump_state)); | |
681 | state->cds_fp = fp; | |
682 | state->cds_sect = sect; | |
683 | ||
684 | switch (sect) | |
685 | { | |
686 | case CTF_SECT_HEADER: | |
9b32cba4 | 687 | ctf_dump_header (fp, state); |
a30b3e18 NA |
688 | break; |
689 | case CTF_SECT_LABEL: | |
690 | if (ctf_label_iter (fp, ctf_dump_label, state) < 0) | |
691 | { | |
692 | if (ctf_errno (fp) != ECTF_NOLABELDATA) | |
693 | goto end; /* errno is set for us. */ | |
694 | ctf_set_errno (fp, 0); | |
695 | } | |
696 | break; | |
697 | case CTF_SECT_OBJT: | |
698 | if (ctf_dump_objts (fp, state) < 0) | |
699 | goto end; /* errno is set for us. */ | |
700 | break; | |
701 | case CTF_SECT_FUNC: | |
702 | if (ctf_dump_funcs (fp, state) < 0) | |
703 | goto end; /* errno is set for us. */ | |
704 | break; | |
705 | case CTF_SECT_VAR: | |
706 | if (ctf_variable_iter (fp, ctf_dump_var, state) < 0) | |
707 | goto end; /* errno is set for us. */ | |
708 | break; | |
709 | case CTF_SECT_TYPE: | |
b4f0e09c | 710 | if (ctf_type_iter_all (fp, ctf_dump_type, state) < 0) |
a30b3e18 NA |
711 | goto end; /* errno is set for us. */ |
712 | break; | |
713 | case CTF_SECT_STR: | |
714 | ctf_dump_str (fp, state); | |
715 | break; | |
716 | default: | |
717 | ctf_set_errno (fp, ECTF_DUMPSECTUNKNOWN); | |
718 | goto end; | |
719 | } | |
720 | } | |
721 | else | |
722 | { | |
723 | state = *statep; | |
724 | ||
725 | if (state->cds_sect != sect) | |
726 | { | |
727 | ctf_set_errno (fp, ECTF_DUMPSECTCHANGED); | |
728 | goto end; | |
729 | } | |
730 | } | |
731 | ||
732 | if (state->cds_current == NULL) | |
733 | state->cds_current = ctf_list_next (&state->cds_items); | |
734 | else | |
735 | state->cds_current = ctf_list_next (state->cds_current); | |
736 | ||
737 | if (state->cds_current == NULL) | |
738 | goto end; | |
739 | ||
740 | /* Hookery. There is some extra complexity to preserve linefeeds within each | |
741 | item while removing linefeeds at the end. */ | |
742 | if (func) | |
743 | { | |
744 | size_t len; | |
745 | ||
746 | str = NULL; | |
747 | for (line = state->cds_current->cdi_item; line && *line; ) | |
748 | { | |
749 | char *nline = line; | |
750 | char *ret; | |
751 | ||
752 | nline = strchr (line, '\n'); | |
753 | if (nline) | |
754 | nline[0] = '\0'; | |
755 | ||
756 | ret = func (sect, line, arg); | |
9323dd86 NA |
757 | str = str_append (str, ret); |
758 | str = str_append (str, "\n"); | |
a30b3e18 NA |
759 | if (ret != line) |
760 | free (ret); | |
761 | ||
762 | if (nline) | |
763 | { | |
764 | nline[0] = '\n'; | |
765 | nline++; | |
766 | } | |
767 | ||
768 | line = nline; | |
769 | } | |
770 | ||
771 | len = strlen (str); | |
772 | ||
773 | if (str[len-1] == '\n') | |
774 | str[len-1] = '\0'; | |
775 | } | |
776 | else | |
9323dd86 NA |
777 | { |
778 | str = strdup (state->cds_current->cdi_item); | |
779 | if (!str) | |
780 | { | |
781 | ctf_set_errno (fp, ENOMEM); | |
782 | return str; | |
783 | } | |
784 | } | |
a30b3e18 NA |
785 | |
786 | ctf_set_errno (fp, 0); | |
787 | return str; | |
788 | ||
789 | end: | |
790 | ctf_dump_free (state); | |
de07e349 | 791 | free (state); |
a30b3e18 NA |
792 | ctf_set_errno (fp, 0); |
793 | *statep = NULL; | |
794 | return NULL; | |
795 | } |