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 | ||
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 * | |
b4f0e09c | 86 | ctf_dump_format_type (ctf_file_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: | |
8e795b46 NA |
177 | ctf_err_warn (fp, 1, "Cannot format name dumping type 0x%lx: %s", id, |
178 | ctf_errmsg (ctf_errno (fp))); | |
a30b3e18 NA |
179 | free (buf); |
180 | free (str); | |
181 | free (bit); | |
a30b3e18 NA |
182 | return NULL; |
183 | } | |
184 | ||
9b32cba4 NA |
185 | /* Dump one string field from the file header into the cds_items. */ |
186 | static int | |
187 | ctf_dump_header_strfield (ctf_file_t *fp, ctf_dump_state_t *state, | |
188 | const char *name, uint32_t value) | |
189 | { | |
190 | char *str; | |
191 | if (value) | |
192 | { | |
193 | if (asprintf (&str, "%s: %s\n", name, ctf_strptr (fp, value)) < 0) | |
194 | goto err; | |
195 | ctf_dump_append (state, str); | |
196 | } | |
197 | return 0; | |
198 | ||
199 | err: | |
791915db | 200 | return (ctf_set_errno (fp, errno)); |
9b32cba4 NA |
201 | } |
202 | ||
203 | /* Dump one section-offset field from the file header into the cds_items. */ | |
204 | static int | |
205 | ctf_dump_header_sectfield (ctf_file_t *fp, ctf_dump_state_t *state, | |
206 | const char *sect, uint32_t off, uint32_t nextoff) | |
207 | { | |
208 | char *str; | |
209 | if (nextoff - off) | |
210 | { | |
211 | if (asprintf (&str, "%s:\t0x%lx -- 0x%lx (0x%lx bytes)\n", sect, | |
212 | (unsigned long) off, (unsigned long) (nextoff - 1), | |
213 | (unsigned long) (nextoff - off)) < 0) | |
214 | goto err; | |
215 | ctf_dump_append (state, str); | |
216 | } | |
217 | return 0; | |
218 | ||
219 | err: | |
791915db | 220 | return (ctf_set_errno (fp, errno)); |
9b32cba4 NA |
221 | } |
222 | ||
223 | /* Dump the file header into the cds_items. */ | |
224 | static int | |
225 | ctf_dump_header (ctf_file_t *fp, ctf_dump_state_t *state) | |
226 | { | |
227 | char *str; | |
228 | const ctf_header_t *hp = fp->ctf_header; | |
229 | const char *vertab[] = | |
230 | { | |
231 | NULL, "CTF_VERSION_1", | |
232 | "CTF_VERSION_1_UPGRADED_3 (latest format, version 1 type " | |
233 | "boundaries)", | |
234 | "CTF_VERSION_2", | |
235 | "CTF_VERSION_3", NULL | |
236 | }; | |
237 | const char *verstr = NULL; | |
238 | ||
239 | if (asprintf (&str, "Magic number: %x\n", hp->cth_magic) < 0) | |
240 | goto err; | |
241 | ctf_dump_append (state, str); | |
242 | ||
243 | if (hp->cth_version <= CTF_VERSION) | |
244 | verstr = vertab[hp->cth_version]; | |
245 | ||
246 | if (verstr == NULL) | |
247 | verstr = "(not a valid version)"; | |
248 | ||
249 | if (asprintf (&str, "Version: %i (%s)\n", hp->cth_version, | |
250 | verstr) < 0) | |
251 | goto err; | |
252 | ctf_dump_append (state, str); | |
253 | ||
254 | /* Everything else is only printed if present. */ | |
255 | ||
256 | /* The flags are unusual in that they represent the ctf_file_t *in memory*: | |
257 | flags representing compression, etc, are turned off as the file is | |
258 | decompressed. So we store a copy of the flags before they are changed, for | |
259 | the dumper. */ | |
260 | ||
261 | if (fp->ctf_openflags > 0) | |
262 | { | |
263 | if (fp->ctf_openflags) | |
264 | if (asprintf (&str, "Flags: 0x%x (%s)", fp->ctf_openflags, | |
265 | fp->ctf_openflags & CTF_F_COMPRESS ? "CTF_F_COMPRESS" | |
266 | : "") < 0) | |
267 | goto err; | |
268 | ctf_dump_append (state, str); | |
269 | } | |
270 | ||
271 | if (ctf_dump_header_strfield (fp, state, "Parent label", | |
272 | hp->cth_parlabel) < 0) | |
273 | goto err; | |
274 | ||
275 | if (ctf_dump_header_strfield (fp, state, "Parent name", hp->cth_parname) < 0) | |
276 | goto err; | |
277 | ||
278 | if (ctf_dump_header_strfield (fp, state, "Compilation unit name", | |
279 | hp->cth_cuname) < 0) | |
280 | goto err; | |
281 | ||
282 | if (ctf_dump_header_sectfield (fp, state, "Label section", hp->cth_lbloff, | |
283 | hp->cth_objtoff) < 0) | |
284 | goto err; | |
285 | ||
286 | if (ctf_dump_header_sectfield (fp, state, "Data object section", | |
287 | hp->cth_objtoff, hp->cth_funcoff) < 0) | |
288 | goto err; | |
289 | ||
290 | if (ctf_dump_header_sectfield (fp, state, "Function info section", | |
291 | hp->cth_funcoff, hp->cth_varoff) < 0) | |
292 | goto err; | |
293 | ||
294 | if (ctf_dump_header_sectfield (fp, state, "Variable section", | |
295 | hp->cth_varoff, hp->cth_typeoff) < 0) | |
296 | goto err; | |
297 | ||
298 | if (ctf_dump_header_sectfield (fp, state, "Type section", | |
299 | hp->cth_typeoff, hp->cth_stroff) < 0) | |
300 | goto err; | |
301 | ||
302 | if (ctf_dump_header_sectfield (fp, state, "String section", hp->cth_stroff, | |
303 | hp->cth_stroff + hp->cth_strlen + 1) < 0) | |
304 | goto err; | |
305 | ||
306 | return 0; | |
307 | err: | |
791915db | 308 | return (ctf_set_errno (fp, errno)); |
9b32cba4 NA |
309 | } |
310 | ||
a30b3e18 NA |
311 | /* Dump a single label into the cds_items. */ |
312 | ||
313 | static int | |
314 | ctf_dump_label (const char *name, const ctf_lblinfo_t *info, | |
315 | void *arg) | |
316 | { | |
317 | char *str; | |
318 | char *typestr; | |
319 | ctf_dump_state_t *state = arg; | |
320 | ||
321 | if (asprintf (&str, "%s -> ", name) < 0) | |
791915db | 322 | return (ctf_set_errno (state->cds_fp, errno)); |
a30b3e18 | 323 | |
b4f0e09c NA |
324 | if ((typestr = ctf_dump_format_type (state->cds_fp, info->ctb_type, |
325 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
326 | { |
327 | free (str); | |
8e795b46 | 328 | return 0; /* Swallow the error. */ |
a30b3e18 NA |
329 | } |
330 | ||
9323dd86 | 331 | str = str_append (str, typestr); |
a30b3e18 NA |
332 | free (typestr); |
333 | ||
334 | ctf_dump_append (state, str); | |
335 | return 0; | |
336 | } | |
337 | ||
338 | /* Dump all the object entries into the cds_items. (There is no iterator for | |
339 | this section, so we just do it in a loop, and this function handles all of | |
340 | them, rather than only one. */ | |
341 | ||
342 | static int | |
343 | ctf_dump_objts (ctf_file_t *fp, ctf_dump_state_t *state) | |
344 | { | |
345 | size_t i; | |
346 | ||
347 | for (i = 0; i < fp->ctf_nsyms; i++) | |
348 | { | |
349 | char *str; | |
350 | char *typestr; | |
351 | const char *sym_name; | |
352 | ctf_id_t type; | |
353 | ||
a0486bac | 354 | if ((type = ctf_lookup_by_symbol (state->cds_fp, i)) == CTF_ERR) |
a30b3e18 NA |
355 | switch (ctf_errno (state->cds_fp)) |
356 | { | |
357 | /* Most errors are just an indication that this symbol is not a data | |
358 | symbol, but this one indicates that we were called wrong, on a | |
359 | CTF file with no associated symbol table. */ | |
360 | case ECTF_NOSYMTAB: | |
a0486bac | 361 | return -1; |
a30b3e18 NA |
362 | case ECTF_NOTDATA: |
363 | case ECTF_NOTYPEDAT: | |
364 | continue; | |
365 | } | |
366 | ||
367 | /* Variable name. */ | |
368 | sym_name = ctf_lookup_symbol_name (fp, i); | |
369 | if (sym_name[0] == '\0') | |
370 | { | |
595a4d43 | 371 | if (asprintf (&str, "%lx -> ", (unsigned long) i) < 0) |
791915db | 372 | return (ctf_set_errno (fp, errno)); |
a30b3e18 NA |
373 | } |
374 | else | |
375 | { | |
595a4d43 | 376 | if (asprintf (&str, "%s (%lx) -> ", sym_name, (unsigned long) i) < 0) |
791915db | 377 | return (ctf_set_errno (fp, errno)); |
a30b3e18 NA |
378 | } |
379 | ||
380 | /* Variable type. */ | |
b4f0e09c NA |
381 | if ((typestr = ctf_dump_format_type (state->cds_fp, type, |
382 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
383 | { |
384 | free (str); | |
8e795b46 | 385 | return 0; /* Swallow the error. */ |
a30b3e18 NA |
386 | } |
387 | ||
9323dd86 | 388 | str = str_append (str, typestr); |
a30b3e18 NA |
389 | free (typestr); |
390 | ||
391 | ctf_dump_append (state, str); | |
392 | } | |
393 | return 0; | |
394 | } | |
395 | ||
396 | /* Dump all the function entries into the cds_items. (As above, there is no | |
397 | iterator for this section.) */ | |
398 | ||
399 | static int | |
400 | ctf_dump_funcs (ctf_file_t *fp, ctf_dump_state_t *state) | |
401 | { | |
402 | size_t i; | |
403 | ||
404 | for (i = 0; i < fp->ctf_nsyms; i++) | |
405 | { | |
791915db | 406 | char *str; |
c6e9a1e5 | 407 | char *bit = NULL; |
791915db | 408 | const char *err; |
a30b3e18 NA |
409 | const char *sym_name; |
410 | ctf_funcinfo_t fi; | |
411 | ctf_id_t type; | |
a30b3e18 | 412 | |
a0486bac | 413 | if ((type = ctf_func_info (state->cds_fp, i, &fi)) == CTF_ERR) |
a30b3e18 NA |
414 | switch (ctf_errno (state->cds_fp)) |
415 | { | |
416 | /* Most errors are just an indication that this symbol is not a data | |
417 | symbol, but this one indicates that we were called wrong, on a | |
418 | CTF file with no associated symbol table. */ | |
419 | case ECTF_NOSYMTAB: | |
a0486bac | 420 | return -1; |
a30b3e18 | 421 | case ECTF_NOTDATA: |
d18f9f16 NA |
422 | case ECTF_NOTFUNC: |
423 | case ECTF_NOFUNCDAT: | |
a30b3e18 NA |
424 | continue; |
425 | } | |
a30b3e18 | 426 | |
c6e9a1e5 NA |
427 | /* Return type and all args. */ |
428 | if ((bit = ctf_type_aname (state->cds_fp, type)) == NULL) | |
791915db NA |
429 | { |
430 | err = "look up return type"; | |
431 | goto err; | |
432 | } | |
a30b3e18 | 433 | |
c6e9a1e5 | 434 | /* Replace in the returned string, dropping in the function name. */ |
a30b3e18 NA |
435 | |
436 | sym_name = ctf_lookup_symbol_name (fp, i); | |
c6e9a1e5 | 437 | if (sym_name[0] != '\0') |
a30b3e18 | 438 | { |
c6e9a1e5 NA |
439 | char *retstar; |
440 | char *new_bit; | |
441 | char *walk; | |
442 | ||
443 | new_bit = malloc (strlen (bit) + 1 + strlen (sym_name)); | |
444 | if (!new_bit) | |
a30b3e18 | 445 | goto oom; |
a30b3e18 | 446 | |
c6e9a1e5 NA |
447 | /* See ctf_type_aname. */ |
448 | retstar = strstr (bit, "(*) ("); | |
449 | if (!ctf_assert (fp, retstar)) | |
450 | goto assert_err; | |
451 | retstar += 2; /* After the '*' */ | |
a30b3e18 | 452 | |
c6e9a1e5 NA |
453 | /* C is not good at search-and-replace. */ |
454 | walk = new_bit; | |
455 | memcpy (walk, bit, retstar - bit); | |
456 | walk += (retstar - bit); | |
457 | strcpy (walk, sym_name); | |
458 | walk += strlen (sym_name); | |
459 | strcpy (walk, retstar); | |
a30b3e18 | 460 | |
a30b3e18 | 461 | free (bit); |
c6e9a1e5 | 462 | bit = new_bit; |
a30b3e18 NA |
463 | } |
464 | ||
c6e9a1e5 NA |
465 | if (asprintf (&str, "Symbol 0x%lx: %s", (unsigned long) i, bit) < 0) |
466 | goto oom; | |
467 | free (bit); | |
a30b3e18 | 468 | |
a30b3e18 NA |
469 | ctf_dump_append (state, str); |
470 | continue; | |
471 | ||
c6e9a1e5 NA |
472 | err: |
473 | ctf_err_warn (fp, 1, "Cannot %s dumping function type for " | |
474 | "symbol 0x%li: %s", err, (unsigned long) i, | |
475 | ctf_errmsg (ctf_errno (state->cds_fp))); | |
476 | free (bit); | |
477 | return -1; /* errno is set for us. */ | |
478 | ||
a30b3e18 | 479 | oom: |
c6e9a1e5 | 480 | free (bit); |
791915db | 481 | return (ctf_set_errno (fp, errno)); |
c6e9a1e5 NA |
482 | |
483 | assert_err: | |
484 | free (bit); | |
a0486bac | 485 | return -1; /* errno is set for us. */ |
a30b3e18 NA |
486 | } |
487 | return 0; | |
488 | } | |
489 | ||
490 | /* Dump a single variable into the cds_items. */ | |
491 | static int | |
492 | ctf_dump_var (const char *name, ctf_id_t type, void *arg) | |
493 | { | |
494 | char *str; | |
495 | char *typestr; | |
496 | ctf_dump_state_t *state = arg; | |
497 | ||
498 | if (asprintf (&str, "%s -> ", name) < 0) | |
791915db | 499 | return (ctf_set_errno (state->cds_fp, errno)); |
a30b3e18 | 500 | |
b4f0e09c NA |
501 | if ((typestr = ctf_dump_format_type (state->cds_fp, type, |
502 | CTF_ADD_ROOT)) == NULL) | |
a30b3e18 NA |
503 | { |
504 | free (str); | |
8e795b46 | 505 | return 0; /* Swallow the error. */ |
a30b3e18 NA |
506 | } |
507 | ||
9323dd86 | 508 | str = str_append (str, typestr); |
a30b3e18 NA |
509 | free (typestr); |
510 | ||
511 | ctf_dump_append (state, str); | |
512 | return 0; | |
513 | } | |
514 | ||
515 | /* Dump a single member into the string in the membstate. */ | |
516 | static int | |
517 | ctf_dump_member (const char *name, ctf_id_t id, unsigned long offset, | |
518 | int depth, void *arg) | |
519 | { | |
520 | ctf_dump_membstate_t *state = arg; | |
521 | char *typestr = NULL; | |
522 | char *bit = NULL; | |
523 | ctf_encoding_t ep; | |
70447401 | 524 | int has_encoding = 0; |
a30b3e18 NA |
525 | ssize_t i; |
526 | ||
527 | for (i = 0; i < depth; i++) | |
9323dd86 | 528 | *state->cdm_str = str_append (*state->cdm_str, " "); |
a30b3e18 NA |
529 | |
530 | if ((typestr = ctf_type_aname (state->cdm_fp, id)) == NULL) | |
791915db NA |
531 | { |
532 | if (id == 0 || ctf_errno (state->cdm_fp) == ECTF_NONREPRESENTABLE) | |
533 | { | |
534 | if (asprintf (&bit, " [0x%lx] (type not represented in CTF)", | |
535 | offset) < 0) | |
536 | goto oom; | |
537 | ||
9323dd86 | 538 | *state->cdm_str = str_append (*state->cdm_str, bit); |
791915db NA |
539 | free (typestr); |
540 | free (bit); | |
541 | return 0; | |
542 | } | |
543 | ||
70447401 NA |
544 | return -1; /* errno is set for us. */ |
545 | } | |
546 | ||
547 | if (ctf_type_encoding (state->cdm_fp, id, &ep) == 0) | |
548 | { | |
549 | has_encoding = 1; | |
550 | ctf_type_encoding (state->cdm_fp, id, &ep); | |
551 | ||
552 | if (asprintf (&bit, " [0x%lx] (ID 0x%lx) (kind %i) %s%s%s:%i " | |
553 | "(aligned at 0x%lx", offset, id, | |
554 | ctf_type_kind (state->cdm_fp, id), typestr, | |
555 | (name[0] != 0 && typestr[0] != 0) ? " " : "", name, | |
556 | ep.cte_bits, (unsigned long) ctf_type_align (state->cdm_fp, | |
557 | id)) < 0) | |
558 | goto oom; | |
559 | } | |
560 | else | |
561 | { | |
562 | if (asprintf (&bit, " [0x%lx] (ID 0x%lx) (kind %i) %s%s%s " | |
563 | "(aligned at 0x%lx", offset, id, | |
564 | ctf_type_kind (state->cdm_fp, id), typestr, | |
565 | (name[0] != 0 && typestr[0] != 0) ? " " : "", name, | |
566 | (unsigned long) ctf_type_align (state->cdm_fp, id)) < 0) | |
567 | goto oom; | |
791915db | 568 | } |
a30b3e18 | 569 | |
9323dd86 | 570 | *state->cdm_str = str_append (*state->cdm_str, bit); |
a30b3e18 NA |
571 | free (typestr); |
572 | free (bit); | |
573 | typestr = NULL; | |
574 | bit = NULL; | |
575 | ||
70447401 | 576 | if (has_encoding) |
a30b3e18 | 577 | { |
a30b3e18 NA |
578 | if (asprintf (&bit, ", format 0x%x, offset:bits 0x%x:0x%x", ep.cte_format, |
579 | ep.cte_offset, ep.cte_bits) < 0) | |
580 | goto oom; | |
9323dd86 | 581 | *state->cdm_str = str_append (*state->cdm_str, bit); |
a30b3e18 NA |
582 | free (bit); |
583 | bit = NULL; | |
584 | } | |
585 | ||
9323dd86 | 586 | *state->cdm_str = str_append (*state->cdm_str, ")\n"); |
a30b3e18 NA |
587 | return 0; |
588 | ||
589 | oom: | |
590 | free (typestr); | |
591 | free (bit); | |
791915db | 592 | return (ctf_set_errno (state->cdm_fp, errno)); |
a30b3e18 NA |
593 | } |
594 | ||
595 | /* Dump a single type into the cds_items. */ | |
a30b3e18 | 596 | static int |
b4f0e09c | 597 | ctf_dump_type (ctf_id_t id, int flag, void *arg) |
a30b3e18 NA |
598 | { |
599 | char *str; | |
791915db | 600 | const char *err; |
a30b3e18 NA |
601 | ctf_dump_state_t *state = arg; |
602 | ctf_dump_membstate_t membstate = { &str, state->cds_fp }; | |
603 | size_t len; | |
604 | ||
b4f0e09c | 605 | if ((str = ctf_dump_format_type (state->cds_fp, id, flag)) == NULL) |
8e795b46 | 606 | goto err_nomsg; /* Error already logged for us. */ |
a30b3e18 | 607 | |
9323dd86 | 608 | str = str_append (str, "\n"); |
a30b3e18 | 609 | if ((ctf_type_visit (state->cds_fp, id, ctf_dump_member, &membstate)) < 0) |
791915db NA |
610 | { |
611 | if (id == 0 || ctf_errno (state->cds_fp) == ECTF_NONREPRESENTABLE) | |
612 | { | |
613 | ctf_dump_append (state, str); | |
614 | return 0; | |
615 | } | |
616 | err = "visit members"; | |
617 | goto err; | |
618 | } | |
a30b3e18 NA |
619 | |
620 | /* Trim off the last linefeed added by ctf_dump_member(). */ | |
621 | len = strlen (str); | |
622 | if (str[len-1] == '\n') | |
623 | str[len-1] = '\0'; | |
624 | ||
625 | ctf_dump_append (state, str); | |
626 | return 0; | |
627 | ||
628 | err: | |
8e795b46 NA |
629 | ctf_err_warn (state->cds_fp, 1, "Cannot %s dumping type 0x%lx: %s", |
630 | err, id, ctf_errmsg (ctf_errno (state->cds_fp))); | |
631 | err_nomsg: | |
a30b3e18 | 632 | free (str); |
8e795b46 | 633 | return 0; /* Swallow the error. */ |
a30b3e18 NA |
634 | } |
635 | ||
636 | /* Dump the string table into the cds_items. */ | |
637 | ||
638 | static int | |
639 | ctf_dump_str (ctf_file_t *fp, ctf_dump_state_t *state) | |
640 | { | |
641 | const char *s = fp->ctf_str[CTF_STRTAB_0].cts_strs; | |
642 | ||
643 | for (; s < fp->ctf_str[CTF_STRTAB_0].cts_strs + | |
644 | fp->ctf_str[CTF_STRTAB_0].cts_len;) | |
645 | { | |
646 | char *str; | |
595a4d43 NA |
647 | if (asprintf (&str, "%lx: %s", |
648 | (unsigned long) (s - fp->ctf_str[CTF_STRTAB_0].cts_strs), | |
a30b3e18 | 649 | s) < 0) |
791915db | 650 | return (ctf_set_errno (fp, errno)); |
a30b3e18 NA |
651 | ctf_dump_append (state, str); |
652 | s += strlen (s) + 1; | |
653 | } | |
654 | ||
655 | return 0; | |
656 | } | |
657 | ||
658 | /* Dump a particular section of a CTF file, in textual form. Call with a | |
659 | pointer to a NULL STATE: each call emits a dynamically allocated string | |
660 | containing a description of one entity in the specified section, in order. | |
661 | Only the first call (with a NULL state) may vary SECT. Once the CTF section | |
662 | has been entirely dumped, the call returns NULL and frees and annuls the | |
663 | STATE, ready for another section to be dumped. The returned textual content | |
664 | may span multiple lines: between each call the FUNC is called with one | |
665 | textual line at a time, and should return a suitably decorated line (it can | |
666 | allocate a new one and return it if it likes). */ | |
667 | ||
668 | char * | |
669 | ctf_dump (ctf_file_t *fp, ctf_dump_state_t **statep, ctf_sect_names_t sect, | |
670 | ctf_dump_decorate_f *func, void *arg) | |
671 | { | |
672 | char *str; | |
673 | char *line; | |
674 | ctf_dump_state_t *state = NULL; | |
675 | ||
676 | if (*statep == NULL) | |
677 | { | |
678 | /* Data collection. Transforming a call-at-a-time iterator into a | |
679 | return-at-a-time iterator in a language without call/cc is annoying. It | |
680 | is easiest to simply collect everything at once and then return it bit | |
681 | by bit. The first call will take (much) longer than otherwise, but the | |
682 | amortized time needed is the same. */ | |
683 | ||
de07e349 | 684 | if ((*statep = malloc (sizeof (struct ctf_dump_state))) == NULL) |
a30b3e18 NA |
685 | { |
686 | ctf_set_errno (fp, ENOMEM); | |
687 | goto end; | |
688 | } | |
689 | state = *statep; | |
690 | ||
691 | memset (state, 0, sizeof (struct ctf_dump_state)); | |
692 | state->cds_fp = fp; | |
693 | state->cds_sect = sect; | |
694 | ||
695 | switch (sect) | |
696 | { | |
697 | case CTF_SECT_HEADER: | |
9b32cba4 | 698 | ctf_dump_header (fp, state); |
a30b3e18 NA |
699 | break; |
700 | case CTF_SECT_LABEL: | |
701 | if (ctf_label_iter (fp, ctf_dump_label, state) < 0) | |
702 | { | |
703 | if (ctf_errno (fp) != ECTF_NOLABELDATA) | |
704 | goto end; /* errno is set for us. */ | |
705 | ctf_set_errno (fp, 0); | |
706 | } | |
707 | break; | |
708 | case CTF_SECT_OBJT: | |
709 | if (ctf_dump_objts (fp, state) < 0) | |
710 | goto end; /* errno is set for us. */ | |
711 | break; | |
712 | case CTF_SECT_FUNC: | |
713 | if (ctf_dump_funcs (fp, state) < 0) | |
714 | goto end; /* errno is set for us. */ | |
715 | break; | |
716 | case CTF_SECT_VAR: | |
717 | if (ctf_variable_iter (fp, ctf_dump_var, state) < 0) | |
718 | goto end; /* errno is set for us. */ | |
719 | break; | |
720 | case CTF_SECT_TYPE: | |
b4f0e09c | 721 | if (ctf_type_iter_all (fp, ctf_dump_type, state) < 0) |
a30b3e18 NA |
722 | goto end; /* errno is set for us. */ |
723 | break; | |
724 | case CTF_SECT_STR: | |
725 | ctf_dump_str (fp, state); | |
726 | break; | |
727 | default: | |
728 | ctf_set_errno (fp, ECTF_DUMPSECTUNKNOWN); | |
729 | goto end; | |
730 | } | |
731 | } | |
732 | else | |
733 | { | |
734 | state = *statep; | |
735 | ||
736 | if (state->cds_sect != sect) | |
737 | { | |
738 | ctf_set_errno (fp, ECTF_DUMPSECTCHANGED); | |
739 | goto end; | |
740 | } | |
741 | } | |
742 | ||
743 | if (state->cds_current == NULL) | |
744 | state->cds_current = ctf_list_next (&state->cds_items); | |
745 | else | |
746 | state->cds_current = ctf_list_next (state->cds_current); | |
747 | ||
748 | if (state->cds_current == NULL) | |
749 | goto end; | |
750 | ||
751 | /* Hookery. There is some extra complexity to preserve linefeeds within each | |
752 | item while removing linefeeds at the end. */ | |
753 | if (func) | |
754 | { | |
755 | size_t len; | |
756 | ||
757 | str = NULL; | |
758 | for (line = state->cds_current->cdi_item; line && *line; ) | |
759 | { | |
760 | char *nline = line; | |
761 | char *ret; | |
762 | ||
763 | nline = strchr (line, '\n'); | |
764 | if (nline) | |
765 | nline[0] = '\0'; | |
766 | ||
767 | ret = func (sect, line, arg); | |
9323dd86 NA |
768 | str = str_append (str, ret); |
769 | str = str_append (str, "\n"); | |
a30b3e18 NA |
770 | if (ret != line) |
771 | free (ret); | |
772 | ||
773 | if (nline) | |
774 | { | |
775 | nline[0] = '\n'; | |
776 | nline++; | |
777 | } | |
778 | ||
779 | line = nline; | |
780 | } | |
781 | ||
782 | len = strlen (str); | |
783 | ||
784 | if (str[len-1] == '\n') | |
785 | str[len-1] = '\0'; | |
786 | } | |
787 | else | |
9323dd86 NA |
788 | { |
789 | str = strdup (state->cds_current->cdi_item); | |
790 | if (!str) | |
791 | { | |
792 | ctf_set_errno (fp, ENOMEM); | |
793 | return str; | |
794 | } | |
795 | } | |
a30b3e18 NA |
796 | |
797 | ctf_set_errno (fp, 0); | |
798 | return str; | |
799 | ||
800 | end: | |
801 | ctf_dump_free (state); | |
de07e349 | 802 | free (state); |
a30b3e18 NA |
803 | ctf_set_errno (fp, 0); |
804 | *statep = NULL; | |
805 | return NULL; | |
806 | } |