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72f33921 | 1 | /* Opening CTF files. |
250d07de | 2 | Copyright (C) 2019-2021 Free Software Foundation, Inc. |
72f33921 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 <stddef.h> | |
22 | #include <string.h> | |
23 | #include <sys/types.h> | |
24 | #include <elf.h> | |
72f33921 NA |
25 | #include "swap.h" |
26 | #include <bfd.h> | |
27 | #include <zlib.h> | |
28 | ||
72f33921 NA |
29 | static const ctf_dmodel_t _libctf_models[] = { |
30 | {"ILP32", CTF_MODEL_ILP32, 4, 1, 2, 4, 4}, | |
31 | {"LP64", CTF_MODEL_LP64, 8, 1, 2, 4, 8}, | |
32 | {NULL, 0, 0, 0, 0, 0, 0} | |
33 | }; | |
34 | ||
35 | const char _CTF_SECTION[] = ".ctf"; | |
36 | const char _CTF_NULLSTR[] = ""; | |
37 | ||
38 | /* Version-sensitive accessors. */ | |
39 | ||
40 | static uint32_t | |
41 | get_kind_v1 (uint32_t info) | |
42 | { | |
43 | return (CTF_V1_INFO_KIND (info)); | |
44 | } | |
45 | ||
46 | static uint32_t | |
47 | get_root_v1 (uint32_t info) | |
48 | { | |
49 | return (CTF_V1_INFO_ISROOT (info)); | |
50 | } | |
51 | ||
52 | static uint32_t | |
53 | get_vlen_v1 (uint32_t info) | |
54 | { | |
55 | return (CTF_V1_INFO_VLEN (info)); | |
56 | } | |
57 | ||
58 | static uint32_t | |
59 | get_kind_v2 (uint32_t info) | |
60 | { | |
61 | return (CTF_V2_INFO_KIND (info)); | |
62 | } | |
63 | ||
64 | static uint32_t | |
65 | get_root_v2 (uint32_t info) | |
66 | { | |
67 | return (CTF_V2_INFO_ISROOT (info)); | |
68 | } | |
69 | ||
70 | static uint32_t | |
71 | get_vlen_v2 (uint32_t info) | |
72 | { | |
73 | return (CTF_V2_INFO_VLEN (info)); | |
74 | } | |
75 | ||
76 | static inline ssize_t | |
139633c3 | 77 | get_ctt_size_common (const ctf_dict_t *fp _libctf_unused_, |
72f33921 NA |
78 | const ctf_type_t *tp _libctf_unused_, |
79 | ssize_t *sizep, ssize_t *incrementp, size_t lsize, | |
80 | size_t csize, size_t ctf_type_size, | |
81 | size_t ctf_stype_size, size_t ctf_lsize_sent) | |
82 | { | |
83 | ssize_t size, increment; | |
84 | ||
85 | if (csize == ctf_lsize_sent) | |
86 | { | |
87 | size = lsize; | |
88 | increment = ctf_type_size; | |
89 | } | |
90 | else | |
91 | { | |
92 | size = csize; | |
93 | increment = ctf_stype_size; | |
94 | } | |
95 | ||
96 | if (sizep) | |
97 | *sizep = size; | |
98 | if (incrementp) | |
99 | *incrementp = increment; | |
100 | ||
101 | return size; | |
102 | } | |
103 | ||
104 | static ssize_t | |
139633c3 | 105 | get_ctt_size_v1 (const ctf_dict_t *fp, const ctf_type_t *tp, |
72f33921 NA |
106 | ssize_t *sizep, ssize_t *incrementp) |
107 | { | |
108 | ctf_type_v1_t *t1p = (ctf_type_v1_t *) tp; | |
109 | ||
110 | return (get_ctt_size_common (fp, tp, sizep, incrementp, | |
111 | CTF_TYPE_LSIZE (t1p), t1p->ctt_size, | |
112 | sizeof (ctf_type_v1_t), sizeof (ctf_stype_v1_t), | |
113 | CTF_LSIZE_SENT_V1)); | |
114 | } | |
115 | ||
116 | /* Return the size that a v1 will be once it is converted to v2. */ | |
117 | ||
118 | static ssize_t | |
139633c3 | 119 | get_ctt_size_v2_unconverted (const ctf_dict_t *fp, const ctf_type_t *tp, |
72f33921 NA |
120 | ssize_t *sizep, ssize_t *incrementp) |
121 | { | |
122 | ctf_type_v1_t *t1p = (ctf_type_v1_t *) tp; | |
123 | ||
124 | return (get_ctt_size_common (fp, tp, sizep, incrementp, | |
125 | CTF_TYPE_LSIZE (t1p), t1p->ctt_size, | |
126 | sizeof (ctf_type_t), sizeof (ctf_stype_t), | |
127 | CTF_LSIZE_SENT)); | |
128 | } | |
129 | ||
130 | static ssize_t | |
139633c3 | 131 | get_ctt_size_v2 (const ctf_dict_t *fp, const ctf_type_t *tp, |
72f33921 NA |
132 | ssize_t *sizep, ssize_t *incrementp) |
133 | { | |
134 | return (get_ctt_size_common (fp, tp, sizep, incrementp, | |
135 | CTF_TYPE_LSIZE (tp), tp->ctt_size, | |
136 | sizeof (ctf_type_t), sizeof (ctf_stype_t), | |
137 | CTF_LSIZE_SENT)); | |
138 | } | |
139 | ||
140 | static ssize_t | |
139633c3 | 141 | get_vbytes_common (ctf_dict_t *fp, unsigned short kind, |
926c9e76 | 142 | ssize_t size _libctf_unused_, size_t vlen) |
72f33921 NA |
143 | { |
144 | switch (kind) | |
145 | { | |
146 | case CTF_K_INTEGER: | |
147 | case CTF_K_FLOAT: | |
148 | return (sizeof (uint32_t)); | |
149 | case CTF_K_SLICE: | |
7cee1826 | 150 | return (sizeof (ctf_slice_t)); |
72f33921 NA |
151 | case CTF_K_ENUM: |
152 | return (sizeof (ctf_enum_t) * vlen); | |
153 | case CTF_K_FORWARD: | |
154 | case CTF_K_UNKNOWN: | |
155 | case CTF_K_POINTER: | |
156 | case CTF_K_TYPEDEF: | |
157 | case CTF_K_VOLATILE: | |
158 | case CTF_K_CONST: | |
159 | case CTF_K_RESTRICT: | |
160 | return 0; | |
161 | default: | |
926c9e76 NA |
162 | ctf_set_errno (fp, ECTF_CORRUPT); |
163 | ctf_err_warn (fp, 0, 0, _("detected invalid CTF kind: %x"), kind); | |
164 | return -1; | |
72f33921 NA |
165 | } |
166 | } | |
167 | ||
168 | static ssize_t | |
139633c3 | 169 | get_vbytes_v1 (ctf_dict_t *fp, unsigned short kind, ssize_t size, size_t vlen) |
72f33921 NA |
170 | { |
171 | switch (kind) | |
172 | { | |
173 | case CTF_K_ARRAY: | |
174 | return (sizeof (ctf_array_v1_t)); | |
175 | case CTF_K_FUNCTION: | |
176 | return (sizeof (unsigned short) * (vlen + (vlen & 1))); | |
177 | case CTF_K_STRUCT: | |
178 | case CTF_K_UNION: | |
179 | if (size < CTF_LSTRUCT_THRESH_V1) | |
180 | return (sizeof (ctf_member_v1_t) * vlen); | |
181 | else | |
182 | return (sizeof (ctf_lmember_v1_t) * vlen); | |
183 | } | |
184 | ||
926c9e76 | 185 | return (get_vbytes_common (fp, kind, size, vlen)); |
72f33921 NA |
186 | } |
187 | ||
188 | static ssize_t | |
139633c3 | 189 | get_vbytes_v2 (ctf_dict_t *fp, unsigned short kind, ssize_t size, size_t vlen) |
72f33921 NA |
190 | { |
191 | switch (kind) | |
192 | { | |
193 | case CTF_K_ARRAY: | |
194 | return (sizeof (ctf_array_t)); | |
195 | case CTF_K_FUNCTION: | |
196 | return (sizeof (uint32_t) * (vlen + (vlen & 1))); | |
197 | case CTF_K_STRUCT: | |
198 | case CTF_K_UNION: | |
199 | if (size < CTF_LSTRUCT_THRESH) | |
200 | return (sizeof (ctf_member_t) * vlen); | |
201 | else | |
202 | return (sizeof (ctf_lmember_t) * vlen); | |
203 | } | |
204 | ||
926c9e76 | 205 | return (get_vbytes_common (fp, kind, size, vlen)); |
72f33921 NA |
206 | } |
207 | ||
139633c3 | 208 | static const ctf_dictops_t ctf_dictops[] = { |
72f33921 NA |
209 | {NULL, NULL, NULL, NULL, NULL}, |
210 | /* CTF_VERSION_1 */ | |
211 | {get_kind_v1, get_root_v1, get_vlen_v1, get_ctt_size_v1, get_vbytes_v1}, | |
212 | /* CTF_VERSION_1_UPGRADED_3 */ | |
213 | {get_kind_v2, get_root_v2, get_vlen_v2, get_ctt_size_v2, get_vbytes_v2}, | |
214 | /* CTF_VERSION_2 */ | |
215 | {get_kind_v2, get_root_v2, get_vlen_v2, get_ctt_size_v2, get_vbytes_v2}, | |
216 | /* CTF_VERSION_3, identical to 2: only new type kinds */ | |
217 | {get_kind_v2, get_root_v2, get_vlen_v2, get_ctt_size_v2, get_vbytes_v2}, | |
218 | }; | |
219 | ||
1136c379 NA |
220 | /* Initialize the symtab translation table as appropriate for its indexing |
221 | state. For unindexed symtypetabs, fill each entry with the offset of the CTF | |
222 | type or function data corresponding to each STT_FUNC or STT_OBJECT entry in | |
223 | the symbol table. For indexed symtypetabs, do nothing: the needed | |
224 | initialization for indexed lookups may be quite expensive, so it is done only | |
225 | as needed, when lookups happen. (In particular, the majority of indexed | |
226 | symtypetabs come from the compiler, and all the linker does is iteration over | |
227 | all entries, which doesn't need this initialization.) | |
228 | ||
53651de8 NA |
229 | The SP symbol table section may be NULL if there is no symtab. |
230 | ||
231 | If init_symtab works on one call, it cannot fail on future calls to the same | |
232 | fp: ctf_symsect_endianness relies on this. */ | |
72f33921 NA |
233 | |
234 | static int | |
1136c379 | 235 | init_symtab (ctf_dict_t *fp, const ctf_header_t *hp, const ctf_sect_t *sp) |
72f33921 | 236 | { |
1136c379 NA |
237 | const unsigned char *symp; |
238 | int skip_func_info = 0; | |
239 | int i; | |
72f33921 NA |
240 | uint32_t *xp = fp->ctf_sxlate; |
241 | uint32_t *xend = xp + fp->ctf_nsyms; | |
242 | ||
243 | uint32_t objtoff = hp->cth_objtoff; | |
244 | uint32_t funcoff = hp->cth_funcoff; | |
245 | ||
1136c379 NA |
246 | /* If the CTF_F_NEWFUNCINFO flag is not set, pretend the func info section |
247 | is empty: this compiler is too old to emit a function info section we | |
248 | understand. */ | |
249 | ||
250 | if (!(hp->cth_flags & CTF_F_NEWFUNCINFO)) | |
251 | skip_func_info = 1; | |
252 | ||
253 | if (hp->cth_objtidxoff < hp->cth_funcidxoff) | |
254 | fp->ctf_objtidx_names = (uint32_t *) (fp->ctf_buf + hp->cth_objtidxoff); | |
255 | if (hp->cth_funcidxoff < hp->cth_varoff && !skip_func_info) | |
256 | fp->ctf_funcidx_names = (uint32_t *) (fp->ctf_buf + hp->cth_funcidxoff); | |
257 | ||
258 | /* Don't bother doing the rest if everything is indexed, or if we don't have a | |
259 | symbol table: we will never use it. */ | |
260 | if ((fp->ctf_objtidx_names && fp->ctf_funcidx_names) || !sp || !sp->cts_data) | |
261 | return 0; | |
262 | ||
263 | /* The CTF data object and function type sections are ordered to match the | |
264 | relative order of the respective symbol types in the symtab, unless there | |
265 | is an index section, in which case the order is arbitrary and the index | |
266 | gives the mapping. If no type information is available for a symbol table | |
267 | entry, a pad is inserted in the CTF section. As a further optimization, | |
268 | anonymous or undefined symbols are omitted from the CTF data. If an | |
269 | index is available for function symbols but not object symbols, or vice | |
270 | versa, we populate the xslate table for the unindexed symbols only. */ | |
271 | ||
272 | for (i = 0, symp = sp->cts_data; xp < xend; xp++, symp += sp->cts_entsize, | |
273 | i++) | |
72f33921 | 274 | { |
1136c379 | 275 | ctf_link_sym_t sym; |
72f33921 | 276 | |
1136c379 NA |
277 | switch (sp->cts_entsize) |
278 | { | |
279 | case sizeof (Elf64_Sym): | |
280 | { | |
281 | const Elf64_Sym *symp64 = (Elf64_Sym *) (uintptr_t) symp; | |
282 | ctf_elf64_to_link_sym (fp, &sym, symp64, i); | |
283 | } | |
284 | break; | |
285 | case sizeof (Elf32_Sym): | |
286 | { | |
287 | const Elf32_Sym *symp32 = (Elf32_Sym *) (uintptr_t) symp; | |
288 | ctf_elf32_to_link_sym (fp, &sym, symp32, i); | |
289 | } | |
290 | break; | |
291 | default: | |
292 | return ECTF_SYMTAB; | |
293 | } | |
72f33921 | 294 | |
53651de8 NA |
295 | /* This call may be led astray if our idea of the symtab's endianness is |
296 | wrong, but when this is fixed by a call to ctf_symsect_endianness, | |
297 | init_symtab will be called again with the right endianness in | |
298 | force. */ | |
1136c379 | 299 | if (ctf_symtab_skippable (&sym)) |
72f33921 NA |
300 | { |
301 | *xp = -1u; | |
302 | continue; | |
303 | } | |
304 | ||
1136c379 | 305 | switch (sym.st_type) |
72f33921 NA |
306 | { |
307 | case STT_OBJECT: | |
1136c379 | 308 | if (fp->ctf_objtidx_names || objtoff >= hp->cth_funcoff) |
72f33921 NA |
309 | { |
310 | *xp = -1u; | |
311 | break; | |
312 | } | |
313 | ||
314 | *xp = objtoff; | |
315 | objtoff += sizeof (uint32_t); | |
316 | break; | |
317 | ||
318 | case STT_FUNC: | |
1136c379 NA |
319 | if (fp->ctf_funcidx_names || funcoff >= hp->cth_objtidxoff |
320 | || skip_func_info) | |
72f33921 NA |
321 | { |
322 | *xp = -1u; | |
323 | break; | |
324 | } | |
325 | ||
326 | *xp = funcoff; | |
1136c379 | 327 | funcoff += sizeof (uint32_t); |
72f33921 NA |
328 | break; |
329 | ||
330 | default: | |
331 | *xp = -1u; | |
332 | break; | |
333 | } | |
334 | } | |
335 | ||
336 | ctf_dprintf ("loaded %lu symtab entries\n", fp->ctf_nsyms); | |
337 | return 0; | |
338 | } | |
339 | ||
fd55eae8 | 340 | /* Reset the CTF base pointer and derive the buf pointer from it, initializing |
139633c3 | 341 | everything in the ctf_dict that depends on the base or buf pointers. |
fd55eae8 NA |
342 | |
343 | The original gap between the buf and base pointers, if any -- the original, | |
344 | unconverted CTF header -- is kept, but its contents are not specified and are | |
345 | never used. */ | |
72f33921 NA |
346 | |
347 | static void | |
139633c3 | 348 | ctf_set_base (ctf_dict_t *fp, const ctf_header_t *hp, unsigned char *base) |
72f33921 | 349 | { |
fd55eae8 | 350 | fp->ctf_buf = base + (fp->ctf_buf - fp->ctf_base); |
72f33921 | 351 | fp->ctf_base = base; |
72f33921 NA |
352 | fp->ctf_vars = (ctf_varent_t *) ((const char *) fp->ctf_buf + |
353 | hp->cth_varoff); | |
354 | fp->ctf_nvars = (hp->cth_typeoff - hp->cth_varoff) / sizeof (ctf_varent_t); | |
355 | ||
356 | fp->ctf_str[CTF_STRTAB_0].cts_strs = (const char *) fp->ctf_buf | |
357 | + hp->cth_stroff; | |
358 | fp->ctf_str[CTF_STRTAB_0].cts_len = hp->cth_strlen; | |
359 | ||
139633c3 NA |
360 | /* If we have a parent dict name and label, store the relocated string |
361 | pointers in the CTF dict for easy access later. */ | |
72f33921 NA |
362 | |
363 | /* Note: before conversion, these will be set to values that will be | |
364 | immediately invalidated by the conversion process, but the conversion | |
365 | process will call ctf_set_base() again to fix things up. */ | |
366 | ||
367 | if (hp->cth_parlabel != 0) | |
368 | fp->ctf_parlabel = ctf_strptr (fp, hp->cth_parlabel); | |
369 | if (hp->cth_parname != 0) | |
370 | fp->ctf_parname = ctf_strptr (fp, hp->cth_parname); | |
fd55eae8 NA |
371 | if (hp->cth_cuname != 0) |
372 | fp->ctf_cuname = ctf_strptr (fp, hp->cth_cuname); | |
373 | ||
374 | if (fp->ctf_cuname) | |
375 | ctf_dprintf ("ctf_set_base: CU name %s\n", fp->ctf_cuname); | |
376 | if (fp->ctf_parname) | |
377 | ctf_dprintf ("ctf_set_base: parent name %s (label %s)\n", | |
378 | fp->ctf_parname, | |
72f33921 NA |
379 | fp->ctf_parlabel ? fp->ctf_parlabel : "<NULL>"); |
380 | } | |
381 | ||
72f33921 NA |
382 | /* Set the version of the CTF file. */ |
383 | ||
384 | /* When this is reset, LCTF_* changes behaviour, but there is no guarantee that | |
385 | the variable data list associated with each type has been upgraded: the | |
386 | caller must ensure this has been done in advance. */ | |
387 | ||
388 | static void | |
139633c3 | 389 | ctf_set_version (ctf_dict_t *fp, ctf_header_t *cth, int ctf_version) |
72f33921 NA |
390 | { |
391 | fp->ctf_version = ctf_version; | |
392 | cth->cth_version = ctf_version; | |
139633c3 | 393 | fp->ctf_dictops = &ctf_dictops[ctf_version]; |
72f33921 NA |
394 | } |
395 | ||
fd55eae8 NA |
396 | |
397 | /* Upgrade the header to CTF_VERSION_3. The upgrade is done in-place. */ | |
398 | static void | |
399 | upgrade_header (ctf_header_t *hp) | |
400 | { | |
401 | ctf_header_v2_t *oldhp = (ctf_header_v2_t *) hp; | |
402 | ||
403 | hp->cth_strlen = oldhp->cth_strlen; | |
404 | hp->cth_stroff = oldhp->cth_stroff; | |
405 | hp->cth_typeoff = oldhp->cth_typeoff; | |
406 | hp->cth_varoff = oldhp->cth_varoff; | |
2db912ba NA |
407 | hp->cth_funcidxoff = hp->cth_varoff; /* No index sections. */ |
408 | hp->cth_objtidxoff = hp->cth_funcidxoff; | |
fd55eae8 NA |
409 | hp->cth_funcoff = oldhp->cth_funcoff; |
410 | hp->cth_objtoff = oldhp->cth_objtoff; | |
411 | hp->cth_lbloff = oldhp->cth_lbloff; | |
412 | hp->cth_cuname = 0; /* No CU name. */ | |
413 | } | |
414 | ||
415 | /* Upgrade the type table to CTF_VERSION_3 (really CTF_VERSION_1_UPGRADED_3) | |
416 | from CTF_VERSION_1. | |
72f33921 NA |
417 | |
418 | The upgrade is not done in-place: the ctf_base is moved. ctf_strptr() must | |
419 | not be called before reallocation is complete. | |
420 | ||
2db912ba NA |
421 | Sections not checked here due to nonexistence or nonpopulated state in older |
422 | formats: objtidx, funcidx. | |
423 | ||
72f33921 NA |
424 | Type kinds not checked here due to nonexistence in older formats: |
425 | CTF_K_SLICE. */ | |
426 | static int | |
139633c3 | 427 | upgrade_types_v1 (ctf_dict_t *fp, ctf_header_t *cth) |
72f33921 NA |
428 | { |
429 | const ctf_type_v1_t *tbuf; | |
430 | const ctf_type_v1_t *tend; | |
fd55eae8 | 431 | unsigned char *ctf_base, *old_ctf_base = (unsigned char *) fp->ctf_dynbase; |
72f33921 NA |
432 | ctf_type_t *t2buf; |
433 | ||
434 | ssize_t increase = 0, size, increment, v2increment, vbytes, v2bytes; | |
435 | const ctf_type_v1_t *tp; | |
436 | ctf_type_t *t2p; | |
72f33921 NA |
437 | |
438 | tbuf = (ctf_type_v1_t *) (fp->ctf_buf + cth->cth_typeoff); | |
439 | tend = (ctf_type_v1_t *) (fp->ctf_buf + cth->cth_stroff); | |
440 | ||
441 | /* Much like init_types(), this is a two-pass process. | |
442 | ||
443 | First, figure out the new type-section size needed. (It is possible, | |
444 | in theory, for it to be less than the old size, but this is very | |
445 | unlikely. It cannot be so small that cth_typeoff ends up of negative | |
446 | size. We validate this with an assertion below.) | |
447 | ||
448 | We must cater not only for changes in vlen and types sizes but also | |
449 | for changes in 'increment', which happen because v2 places some types | |
450 | into ctf_stype_t where v1 would be forced to use the larger non-stype. */ | |
451 | ||
452 | for (tp = tbuf; tp < tend; | |
453 | tp = (ctf_type_v1_t *) ((uintptr_t) tp + increment + vbytes)) | |
454 | { | |
455 | unsigned short kind = CTF_V1_INFO_KIND (tp->ctt_info); | |
456 | unsigned long vlen = CTF_V1_INFO_VLEN (tp->ctt_info); | |
457 | ||
458 | size = get_ctt_size_v1 (fp, (const ctf_type_t *) tp, NULL, &increment); | |
926c9e76 | 459 | vbytes = get_vbytes_v1 (fp, kind, size, vlen); |
72f33921 NA |
460 | |
461 | get_ctt_size_v2_unconverted (fp, (const ctf_type_t *) tp, NULL, | |
462 | &v2increment); | |
926c9e76 | 463 | v2bytes = get_vbytes_v2 (fp, kind, size, vlen); |
72f33921 NA |
464 | |
465 | if ((vbytes < 0) || (size < 0)) | |
466 | return ECTF_CORRUPT; | |
467 | ||
468 | increase += v2increment - increment; /* May be negative. */ | |
469 | increase += v2bytes - vbytes; | |
470 | } | |
471 | ||
fd55eae8 NA |
472 | /* Allocate enough room for the new buffer, then copy everything but the type |
473 | section into place, and reset the base accordingly. Leave the version | |
474 | number unchanged, so that LCTF_INFO_* still works on the | |
72f33921 NA |
475 | as-yet-untranslated type info. */ |
476 | ||
de07e349 | 477 | if ((ctf_base = malloc (fp->ctf_size + increase)) == NULL) |
72f33921 NA |
478 | return ECTF_ZALLOC; |
479 | ||
fd55eae8 NA |
480 | /* Start at ctf_buf, not ctf_base, to squeeze out the original header: we |
481 | never use it and it is unconverted. */ | |
72f33921 | 482 | |
fd55eae8 NA |
483 | memcpy (ctf_base, fp->ctf_buf, cth->cth_typeoff); |
484 | memcpy (ctf_base + cth->cth_stroff + increase, | |
485 | fp->ctf_buf + cth->cth_stroff, cth->cth_strlen); | |
72f33921 | 486 | |
fd55eae8 NA |
487 | memset (ctf_base + cth->cth_typeoff, 0, cth->cth_stroff - cth->cth_typeoff |
488 | + increase); | |
72f33921 | 489 | |
fd55eae8 | 490 | cth->cth_stroff += increase; |
72f33921 | 491 | fp->ctf_size += increase; |
fd55eae8 NA |
492 | assert (cth->cth_stroff >= cth->cth_typeoff); |
493 | fp->ctf_base = ctf_base; | |
494 | fp->ctf_buf = ctf_base; | |
495 | fp->ctf_dynbase = ctf_base; | |
496 | ctf_set_base (fp, cth, ctf_base); | |
72f33921 | 497 | |
fd55eae8 | 498 | t2buf = (ctf_type_t *) (fp->ctf_buf + cth->cth_typeoff); |
72f33921 NA |
499 | |
500 | /* Iterate through all the types again, upgrading them. | |
501 | ||
502 | Everything that hasn't changed can just be outright memcpy()ed. | |
503 | Things that have changed need field-by-field consideration. */ | |
504 | ||
505 | for (tp = tbuf, t2p = t2buf; tp < tend; | |
506 | tp = (ctf_type_v1_t *) ((uintptr_t) tp + increment + vbytes), | |
507 | t2p = (ctf_type_t *) ((uintptr_t) t2p + v2increment + v2bytes)) | |
508 | { | |
509 | unsigned short kind = CTF_V1_INFO_KIND (tp->ctt_info); | |
510 | int isroot = CTF_V1_INFO_ISROOT (tp->ctt_info); | |
511 | unsigned long vlen = CTF_V1_INFO_VLEN (tp->ctt_info); | |
512 | ssize_t v2size; | |
513 | void *vdata, *v2data; | |
514 | ||
515 | size = get_ctt_size_v1 (fp, (const ctf_type_t *) tp, NULL, &increment); | |
926c9e76 | 516 | vbytes = get_vbytes_v1 (fp, kind, size, vlen); |
72f33921 NA |
517 | |
518 | t2p->ctt_name = tp->ctt_name; | |
519 | t2p->ctt_info = CTF_TYPE_INFO (kind, isroot, vlen); | |
520 | ||
521 | switch (kind) | |
522 | { | |
523 | case CTF_K_FUNCTION: | |
524 | case CTF_K_FORWARD: | |
525 | case CTF_K_TYPEDEF: | |
526 | case CTF_K_POINTER: | |
527 | case CTF_K_VOLATILE: | |
528 | case CTF_K_CONST: | |
529 | case CTF_K_RESTRICT: | |
530 | t2p->ctt_type = tp->ctt_type; | |
531 | break; | |
532 | case CTF_K_INTEGER: | |
533 | case CTF_K_FLOAT: | |
534 | case CTF_K_ARRAY: | |
535 | case CTF_K_STRUCT: | |
536 | case CTF_K_UNION: | |
537 | case CTF_K_ENUM: | |
538 | case CTF_K_UNKNOWN: | |
a0486bac | 539 | if ((size_t) size <= CTF_MAX_SIZE) |
72f33921 NA |
540 | t2p->ctt_size = size; |
541 | else | |
542 | { | |
543 | t2p->ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI (size); | |
544 | t2p->ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO (size); | |
545 | } | |
546 | break; | |
547 | } | |
548 | ||
549 | v2size = get_ctt_size_v2 (fp, t2p, NULL, &v2increment); | |
926c9e76 | 550 | v2bytes = get_vbytes_v2 (fp, kind, v2size, vlen); |
72f33921 NA |
551 | |
552 | /* Catch out-of-sync get_ctt_size_*(). The count goes wrong if | |
553 | these are not identical (and having them different makes no | |
554 | sense semantically). */ | |
555 | ||
556 | assert (size == v2size); | |
557 | ||
558 | /* Now the varlen info. */ | |
559 | ||
560 | vdata = (void *) ((uintptr_t) tp + increment); | |
561 | v2data = (void *) ((uintptr_t) t2p + v2increment); | |
562 | ||
563 | switch (kind) | |
564 | { | |
565 | case CTF_K_ARRAY: | |
566 | { | |
567 | const ctf_array_v1_t *ap = (const ctf_array_v1_t *) vdata; | |
568 | ctf_array_t *a2p = (ctf_array_t *) v2data; | |
569 | ||
570 | a2p->cta_contents = ap->cta_contents; | |
571 | a2p->cta_index = ap->cta_index; | |
572 | a2p->cta_nelems = ap->cta_nelems; | |
573 | break; | |
574 | } | |
575 | case CTF_K_STRUCT: | |
576 | case CTF_K_UNION: | |
577 | { | |
578 | ctf_member_t tmp; | |
579 | const ctf_member_v1_t *m1 = (const ctf_member_v1_t *) vdata; | |
580 | const ctf_lmember_v1_t *lm1 = (const ctf_lmember_v1_t *) m1; | |
581 | ctf_member_t *m2 = (ctf_member_t *) v2data; | |
582 | ctf_lmember_t *lm2 = (ctf_lmember_t *) m2; | |
583 | unsigned long i; | |
584 | ||
585 | /* We walk all four pointers forward, but only reference the two | |
586 | that are valid for the given size, to avoid quadruplicating all | |
587 | the code. */ | |
588 | ||
589 | for (i = vlen; i != 0; i--, m1++, lm1++, m2++, lm2++) | |
590 | { | |
591 | size_t offset; | |
592 | if (size < CTF_LSTRUCT_THRESH_V1) | |
593 | { | |
594 | offset = m1->ctm_offset; | |
595 | tmp.ctm_name = m1->ctm_name; | |
596 | tmp.ctm_type = m1->ctm_type; | |
597 | } | |
598 | else | |
599 | { | |
600 | offset = CTF_LMEM_OFFSET (lm1); | |
601 | tmp.ctm_name = lm1->ctlm_name; | |
602 | tmp.ctm_type = lm1->ctlm_type; | |
603 | } | |
604 | if (size < CTF_LSTRUCT_THRESH) | |
605 | { | |
606 | m2->ctm_name = tmp.ctm_name; | |
607 | m2->ctm_type = tmp.ctm_type; | |
608 | m2->ctm_offset = offset; | |
609 | } | |
610 | else | |
611 | { | |
612 | lm2->ctlm_name = tmp.ctm_name; | |
613 | lm2->ctlm_type = tmp.ctm_type; | |
614 | lm2->ctlm_offsethi = CTF_OFFSET_TO_LMEMHI (offset); | |
615 | lm2->ctlm_offsetlo = CTF_OFFSET_TO_LMEMLO (offset); | |
616 | } | |
617 | } | |
618 | break; | |
619 | } | |
620 | case CTF_K_FUNCTION: | |
621 | { | |
622 | unsigned long i; | |
623 | unsigned short *a1 = (unsigned short *) vdata; | |
624 | uint32_t *a2 = (uint32_t *) v2data; | |
625 | ||
626 | for (i = vlen; i != 0; i--, a1++, a2++) | |
627 | *a2 = *a1; | |
628 | } | |
629 | /* FALLTHRU */ | |
630 | default: | |
631 | /* Catch out-of-sync get_vbytes_*(). */ | |
632 | assert (vbytes == v2bytes); | |
633 | memcpy (v2data, vdata, vbytes); | |
634 | } | |
635 | } | |
636 | ||
637 | /* Verify that the entire region was converted. If not, we are either | |
638 | converting too much, or too little (leading to a buffer overrun either here | |
639 | or at read time, in init_types().) */ | |
640 | ||
fd55eae8 | 641 | assert ((size_t) t2p - (size_t) fp->ctf_buf == cth->cth_stroff); |
72f33921 | 642 | |
fd55eae8 | 643 | ctf_set_version (fp, cth, CTF_VERSION_1_UPGRADED_3); |
de07e349 | 644 | free (old_ctf_base); |
72f33921 NA |
645 | |
646 | return 0; | |
647 | } | |
648 | ||
fd55eae8 NA |
649 | /* Upgrade from any earlier version. */ |
650 | static int | |
139633c3 | 651 | upgrade_types (ctf_dict_t *fp, ctf_header_t *cth) |
fd55eae8 NA |
652 | { |
653 | switch (cth->cth_version) | |
654 | { | |
655 | /* v1 requires a full pass and reformatting. */ | |
656 | case CTF_VERSION_1: | |
657 | upgrade_types_v1 (fp, cth); | |
658 | /* FALLTHRU */ | |
659 | /* Already-converted v1 is just like later versions except that its | |
660 | parent/child boundary is unchanged (and much lower). */ | |
661 | ||
662 | case CTF_VERSION_1_UPGRADED_3: | |
663 | fp->ctf_parmax = CTF_MAX_PTYPE_V1; | |
664 | ||
665 | /* v2 is just the same as v3 except for new types and sections: | |
666 | no upgrading required. */ | |
667 | case CTF_VERSION_2: ; | |
668 | /* FALLTHRU */ | |
669 | } | |
670 | return 0; | |
671 | } | |
672 | ||
72f33921 NA |
673 | /* Initialize the type ID translation table with the byte offset of each type, |
674 | and initialize the hash tables of each named type. Upgrade the type table to | |
675 | the latest supported representation in the process, if needed, and if this | |
676 | recension of libctf supports upgrading. */ | |
677 | ||
678 | static int | |
139633c3 | 679 | init_types (ctf_dict_t *fp, ctf_header_t *cth) |
72f33921 NA |
680 | { |
681 | const ctf_type_t *tbuf; | |
682 | const ctf_type_t *tend; | |
683 | ||
684 | unsigned long pop[CTF_K_MAX + 1] = { 0 }; | |
685 | const ctf_type_t *tp; | |
72f33921 NA |
686 | uint32_t id, dst; |
687 | uint32_t *xp; | |
688 | ||
139633c3 NA |
689 | /* We determine whether the dict is a child or a parent based on the value of |
690 | cth_parname. */ | |
72f33921 NA |
691 | |
692 | int child = cth->cth_parname != 0; | |
693 | int nlstructs = 0, nlunions = 0; | |
694 | int err; | |
695 | ||
676c3ecb NA |
696 | assert (!(fp->ctf_flags & LCTF_RDWR)); |
697 | ||
72f33921 NA |
698 | if (_libctf_unlikely_ (fp->ctf_version == CTF_VERSION_1)) |
699 | { | |
700 | int err; | |
701 | if ((err = upgrade_types (fp, cth)) != 0) | |
702 | return err; /* Upgrade failed. */ | |
703 | } | |
704 | ||
705 | tbuf = (ctf_type_t *) (fp->ctf_buf + cth->cth_typeoff); | |
706 | tend = (ctf_type_t *) (fp->ctf_buf + cth->cth_stroff); | |
707 | ||
708 | /* We make two passes through the entire type section. In this first | |
709 | pass, we count the number of each type and the total number of types. */ | |
710 | ||
711 | for (tp = tbuf; tp < tend; fp->ctf_typemax++) | |
712 | { | |
713 | unsigned short kind = LCTF_INFO_KIND (fp, tp->ctt_info); | |
714 | unsigned long vlen = LCTF_INFO_VLEN (fp, tp->ctt_info); | |
715 | ssize_t size, increment, vbytes; | |
716 | ||
717 | (void) ctf_get_ctt_size (fp, tp, &size, &increment); | |
718 | vbytes = LCTF_VBYTES (fp, kind, size, vlen); | |
719 | ||
720 | if (vbytes < 0) | |
721 | return ECTF_CORRUPT; | |
722 | ||
2484ca43 NA |
723 | /* For forward declarations, ctt_type is the CTF_K_* kind for the tag, |
724 | so bump that population count too. */ | |
72f33921 | 725 | if (kind == CTF_K_FORWARD) |
2484ca43 | 726 | pop[tp->ctt_type]++; |
72f33921 | 727 | |
72f33921 NA |
728 | tp = (ctf_type_t *) ((uintptr_t) tp + increment + vbytes); |
729 | pop[kind]++; | |
730 | } | |
731 | ||
732 | if (child) | |
733 | { | |
139633c3 | 734 | ctf_dprintf ("CTF dict %p is a child\n", (void *) fp); |
72f33921 NA |
735 | fp->ctf_flags |= LCTF_CHILD; |
736 | } | |
737 | else | |
139633c3 | 738 | ctf_dprintf ("CTF dict %p is a parent\n", (void *) fp); |
72f33921 NA |
739 | |
740 | /* Now that we've counted up the number of each type, we can allocate | |
741 | the hash tables, type translation table, and pointer table. */ | |
742 | ||
676c3ecb NA |
743 | if ((fp->ctf_structs.ctn_readonly |
744 | = ctf_hash_create (pop[CTF_K_STRUCT], ctf_hash_string, | |
745 | ctf_hash_eq_string)) == NULL) | |
72f33921 NA |
746 | return ENOMEM; |
747 | ||
676c3ecb NA |
748 | if ((fp->ctf_unions.ctn_readonly |
749 | = ctf_hash_create (pop[CTF_K_UNION], ctf_hash_string, | |
750 | ctf_hash_eq_string)) == NULL) | |
72f33921 NA |
751 | return ENOMEM; |
752 | ||
676c3ecb NA |
753 | if ((fp->ctf_enums.ctn_readonly |
754 | = ctf_hash_create (pop[CTF_K_ENUM], ctf_hash_string, | |
755 | ctf_hash_eq_string)) == NULL) | |
72f33921 NA |
756 | return ENOMEM; |
757 | ||
676c3ecb NA |
758 | if ((fp->ctf_names.ctn_readonly |
759 | = ctf_hash_create (pop[CTF_K_INTEGER] + | |
760 | pop[CTF_K_FLOAT] + | |
761 | pop[CTF_K_FUNCTION] + | |
762 | pop[CTF_K_TYPEDEF] + | |
763 | pop[CTF_K_POINTER] + | |
764 | pop[CTF_K_VOLATILE] + | |
765 | pop[CTF_K_CONST] + | |
766 | pop[CTF_K_RESTRICT], | |
767 | ctf_hash_string, | |
768 | ctf_hash_eq_string)) == NULL) | |
72f33921 NA |
769 | return ENOMEM; |
770 | ||
de07e349 | 771 | fp->ctf_txlate = malloc (sizeof (uint32_t) * (fp->ctf_typemax + 1)); |
676c3ecb | 772 | fp->ctf_ptrtab_len = fp->ctf_typemax + 1; |
de07e349 | 773 | fp->ctf_ptrtab = malloc (sizeof (uint32_t) * fp->ctf_ptrtab_len); |
72f33921 NA |
774 | |
775 | if (fp->ctf_txlate == NULL || fp->ctf_ptrtab == NULL) | |
776 | return ENOMEM; /* Memory allocation failed. */ | |
777 | ||
778 | xp = fp->ctf_txlate; | |
779 | *xp++ = 0; /* Type id 0 is used as a sentinel value. */ | |
780 | ||
781 | memset (fp->ctf_txlate, 0, sizeof (uint32_t) * (fp->ctf_typemax + 1)); | |
782 | memset (fp->ctf_ptrtab, 0, sizeof (uint32_t) * (fp->ctf_typemax + 1)); | |
783 | ||
784 | /* In the second pass through the types, we fill in each entry of the | |
785 | type and pointer tables and add names to the appropriate hashes. */ | |
786 | ||
787 | for (id = 1, tp = tbuf; tp < tend; xp++, id++) | |
788 | { | |
789 | unsigned short kind = LCTF_INFO_KIND (fp, tp->ctt_info); | |
fe4c2d55 | 790 | unsigned short isroot = LCTF_INFO_ISROOT (fp, tp->ctt_info); |
72f33921 NA |
791 | unsigned long vlen = LCTF_INFO_VLEN (fp, tp->ctt_info); |
792 | ssize_t size, increment, vbytes; | |
793 | ||
794 | const char *name; | |
795 | ||
796 | (void) ctf_get_ctt_size (fp, tp, &size, &increment); | |
797 | name = ctf_strptr (fp, tp->ctt_name); | |
926c9e76 | 798 | /* Cannot fail: shielded by call in loop above. */ |
72f33921 NA |
799 | vbytes = LCTF_VBYTES (fp, kind, size, vlen); |
800 | ||
801 | switch (kind) | |
802 | { | |
803 | case CTF_K_INTEGER: | |
804 | case CTF_K_FLOAT: | |
805 | /* Names are reused by bit-fields, which are differentiated by their | |
806 | encodings, and so typically we'd record only the first instance of | |
807 | a given intrinsic. However, we replace an existing type with a | |
808 | root-visible version so that we can be sure to find it when | |
809 | checking for conflicting definitions in ctf_add_type(). */ | |
810 | ||
676c3ecb NA |
811 | if (((ctf_hash_lookup_type (fp->ctf_names.ctn_readonly, |
812 | fp, name)) == 0) | |
fe4c2d55 | 813 | || isroot) |
72f33921 | 814 | { |
676c3ecb | 815 | err = ctf_hash_define_type (fp->ctf_names.ctn_readonly, fp, |
72f33921 NA |
816 | LCTF_INDEX_TO_TYPE (fp, id, child), |
817 | tp->ctt_name); | |
d851ecd3 | 818 | if (err != 0) |
72f33921 NA |
819 | return err; |
820 | } | |
821 | break; | |
822 | ||
823 | /* These kinds have no name, so do not need interning into any | |
824 | hashtables. */ | |
825 | case CTF_K_ARRAY: | |
826 | case CTF_K_SLICE: | |
827 | break; | |
828 | ||
829 | case CTF_K_FUNCTION: | |
fe4c2d55 NA |
830 | if (!isroot) |
831 | break; | |
832 | ||
676c3ecb | 833 | err = ctf_hash_insert_type (fp->ctf_names.ctn_readonly, fp, |
72f33921 NA |
834 | LCTF_INDEX_TO_TYPE (fp, id, child), |
835 | tp->ctt_name); | |
d851ecd3 | 836 | if (err != 0) |
72f33921 NA |
837 | return err; |
838 | break; | |
839 | ||
840 | case CTF_K_STRUCT: | |
fe4c2d55 NA |
841 | if (size >= CTF_LSTRUCT_THRESH) |
842 | nlstructs++; | |
843 | ||
844 | if (!isroot) | |
845 | break; | |
846 | ||
676c3ecb | 847 | err = ctf_hash_define_type (fp->ctf_structs.ctn_readonly, fp, |
72f33921 NA |
848 | LCTF_INDEX_TO_TYPE (fp, id, child), |
849 | tp->ctt_name); | |
850 | ||
d851ecd3 | 851 | if (err != 0) |
72f33921 NA |
852 | return err; |
853 | ||
72f33921 NA |
854 | break; |
855 | ||
856 | case CTF_K_UNION: | |
fe4c2d55 NA |
857 | if (size >= CTF_LSTRUCT_THRESH) |
858 | nlunions++; | |
859 | ||
860 | if (!isroot) | |
861 | break; | |
862 | ||
676c3ecb | 863 | err = ctf_hash_define_type (fp->ctf_unions.ctn_readonly, fp, |
72f33921 NA |
864 | LCTF_INDEX_TO_TYPE (fp, id, child), |
865 | tp->ctt_name); | |
866 | ||
d851ecd3 | 867 | if (err != 0) |
72f33921 | 868 | return err; |
72f33921 NA |
869 | break; |
870 | ||
871 | case CTF_K_ENUM: | |
fe4c2d55 NA |
872 | if (!isroot) |
873 | break; | |
874 | ||
676c3ecb | 875 | err = ctf_hash_define_type (fp->ctf_enums.ctn_readonly, fp, |
72f33921 NA |
876 | LCTF_INDEX_TO_TYPE (fp, id, child), |
877 | tp->ctt_name); | |
878 | ||
d851ecd3 | 879 | if (err != 0) |
72f33921 NA |
880 | return err; |
881 | break; | |
882 | ||
883 | case CTF_K_TYPEDEF: | |
fe4c2d55 NA |
884 | if (!isroot) |
885 | break; | |
886 | ||
676c3ecb | 887 | err = ctf_hash_insert_type (fp->ctf_names.ctn_readonly, fp, |
72f33921 NA |
888 | LCTF_INDEX_TO_TYPE (fp, id, child), |
889 | tp->ctt_name); | |
d851ecd3 | 890 | if (err != 0) |
72f33921 NA |
891 | return err; |
892 | break; | |
893 | ||
894 | case CTF_K_FORWARD: | |
676c3ecb NA |
895 | { |
896 | ctf_names_t *np = ctf_name_table (fp, tp->ctt_type); | |
fe4c2d55 NA |
897 | |
898 | if (!isroot) | |
899 | break; | |
900 | ||
676c3ecb NA |
901 | /* Only insert forward tags into the given hash if the type or tag |
902 | name is not already present. */ | |
903 | if (ctf_hash_lookup_type (np->ctn_readonly, fp, name) == 0) | |
904 | { | |
905 | err = ctf_hash_insert_type (np->ctn_readonly, fp, | |
906 | LCTF_INDEX_TO_TYPE (fp, id, child), | |
907 | tp->ctt_name); | |
908 | if (err != 0) | |
909 | return err; | |
910 | } | |
911 | break; | |
912 | } | |
72f33921 NA |
913 | |
914 | case CTF_K_POINTER: | |
139633c3 NA |
915 | /* If the type referenced by the pointer is in this CTF dict, then |
916 | store the index of the pointer type in fp->ctf_ptrtab[ index of | |
917 | referenced type ]. */ | |
72f33921 NA |
918 | |
919 | if (LCTF_TYPE_ISCHILD (fp, tp->ctt_type) == child | |
920 | && LCTF_TYPE_TO_INDEX (fp, tp->ctt_type) <= fp->ctf_typemax) | |
921 | fp->ctf_ptrtab[LCTF_TYPE_TO_INDEX (fp, tp->ctt_type)] = id; | |
922 | /*FALLTHRU*/ | |
923 | ||
924 | case CTF_K_VOLATILE: | |
925 | case CTF_K_CONST: | |
926 | case CTF_K_RESTRICT: | |
fe4c2d55 NA |
927 | if (!isroot) |
928 | break; | |
929 | ||
676c3ecb | 930 | err = ctf_hash_insert_type (fp->ctf_names.ctn_readonly, fp, |
72f33921 NA |
931 | LCTF_INDEX_TO_TYPE (fp, id, child), |
932 | tp->ctt_name); | |
d851ecd3 | 933 | if (err != 0) |
72f33921 NA |
934 | return err; |
935 | break; | |
0b4fa56e | 936 | default: |
926c9e76 NA |
937 | ctf_err_warn (fp, 0, ECTF_CORRUPT, |
938 | _("init_types(): unhandled CTF kind: %x"), kind); | |
0b4fa56e | 939 | return ECTF_CORRUPT; |
72f33921 NA |
940 | } |
941 | ||
942 | *xp = (uint32_t) ((uintptr_t) tp - (uintptr_t) fp->ctf_buf); | |
943 | tp = (ctf_type_t *) ((uintptr_t) tp + increment + vbytes); | |
944 | } | |
945 | ||
946 | ctf_dprintf ("%lu total types processed\n", fp->ctf_typemax); | |
676c3ecb NA |
947 | ctf_dprintf ("%u enum names hashed\n", |
948 | ctf_hash_size (fp->ctf_enums.ctn_readonly)); | |
72f33921 | 949 | ctf_dprintf ("%u struct names hashed (%d long)\n", |
676c3ecb | 950 | ctf_hash_size (fp->ctf_structs.ctn_readonly), nlstructs); |
72f33921 | 951 | ctf_dprintf ("%u union names hashed (%d long)\n", |
676c3ecb NA |
952 | ctf_hash_size (fp->ctf_unions.ctn_readonly), nlunions); |
953 | ctf_dprintf ("%u base type names hashed\n", | |
954 | ctf_hash_size (fp->ctf_names.ctn_readonly)); | |
72f33921 NA |
955 | |
956 | /* Make an additional pass through the pointer table to find pointers that | |
957 | point to anonymous typedef nodes. If we find one, modify the pointer table | |
958 | so that the pointer is also known to point to the node that is referenced | |
959 | by the anonymous typedef node. */ | |
960 | ||
961 | for (id = 1; id <= fp->ctf_typemax; id++) | |
962 | { | |
963 | if ((dst = fp->ctf_ptrtab[id]) != 0) | |
964 | { | |
965 | tp = LCTF_INDEX_TO_TYPEPTR (fp, id); | |
966 | ||
676c3ecb NA |
967 | if (LCTF_INFO_KIND (fp, tp->ctt_info) == CTF_K_TYPEDEF |
968 | && strcmp (ctf_strptr (fp, tp->ctt_name), "") == 0 | |
969 | && LCTF_TYPE_ISCHILD (fp, tp->ctt_type) == child | |
970 | && LCTF_TYPE_TO_INDEX (fp, tp->ctt_type) <= fp->ctf_typemax) | |
971 | fp->ctf_ptrtab[LCTF_TYPE_TO_INDEX (fp, tp->ctt_type)] = dst; | |
72f33921 NA |
972 | } |
973 | } | |
974 | ||
975 | return 0; | |
976 | } | |
977 | ||
978 | /* Endianness-flipping routines. | |
979 | ||
980 | We flip everything, mindlessly, even 1-byte entities, so that future | |
981 | expansions do not require changes to this code. */ | |
982 | ||
72f33921 NA |
983 | /* Flip the endianness of the CTF header. */ |
984 | ||
985 | static void | |
986 | flip_header (ctf_header_t *cth) | |
987 | { | |
988 | swap_thing (cth->cth_preamble.ctp_magic); | |
989 | swap_thing (cth->cth_preamble.ctp_version); | |
990 | swap_thing (cth->cth_preamble.ctp_flags); | |
991 | swap_thing (cth->cth_parlabel); | |
992 | swap_thing (cth->cth_parname); | |
fd55eae8 | 993 | swap_thing (cth->cth_cuname); |
72f33921 NA |
994 | swap_thing (cth->cth_objtoff); |
995 | swap_thing (cth->cth_funcoff); | |
2db912ba NA |
996 | swap_thing (cth->cth_objtidxoff); |
997 | swap_thing (cth->cth_funcidxoff); | |
72f33921 NA |
998 | swap_thing (cth->cth_varoff); |
999 | swap_thing (cth->cth_typeoff); | |
1000 | swap_thing (cth->cth_stroff); | |
1001 | swap_thing (cth->cth_strlen); | |
1002 | } | |
1003 | ||
1004 | /* Flip the endianness of the label section, an array of ctf_lblent_t. */ | |
1005 | ||
1006 | static void | |
1007 | flip_lbls (void *start, size_t len) | |
1008 | { | |
1009 | ctf_lblent_t *lbl = start; | |
5ae6af75 | 1010 | ssize_t i; |
72f33921 | 1011 | |
5ae6af75 | 1012 | for (i = len / sizeof (struct ctf_lblent); i > 0; lbl++, i--) |
72f33921 NA |
1013 | { |
1014 | swap_thing (lbl->ctl_label); | |
1015 | swap_thing (lbl->ctl_type); | |
1016 | } | |
1017 | } | |
1018 | ||
2db912ba | 1019 | /* Flip the endianness of the data-object or function sections or their indexes, |
1136c379 | 1020 | all arrays of uint32_t. */ |
72f33921 NA |
1021 | |
1022 | static void | |
1023 | flip_objts (void *start, size_t len) | |
1024 | { | |
1025 | uint32_t *obj = start; | |
5ae6af75 | 1026 | ssize_t i; |
72f33921 | 1027 | |
5ae6af75 | 1028 | for (i = len / sizeof (uint32_t); i > 0; obj++, i--) |
72f33921 NA |
1029 | swap_thing (*obj); |
1030 | } | |
1031 | ||
1032 | /* Flip the endianness of the variable section, an array of ctf_varent_t. */ | |
1033 | ||
1034 | static void | |
1035 | flip_vars (void *start, size_t len) | |
1036 | { | |
1037 | ctf_varent_t *var = start; | |
5ae6af75 | 1038 | ssize_t i; |
72f33921 | 1039 | |
5ae6af75 | 1040 | for (i = len / sizeof (struct ctf_varent); i > 0; var++, i--) |
72f33921 NA |
1041 | { |
1042 | swap_thing (var->ctv_name); | |
1043 | swap_thing (var->ctv_type); | |
1044 | } | |
1045 | } | |
1046 | ||
1047 | /* Flip the endianness of the type section, a tagged array of ctf_type or | |
1048 | ctf_stype followed by variable data. */ | |
1049 | ||
1050 | static int | |
139633c3 | 1051 | flip_types (ctf_dict_t *fp, void *start, size_t len) |
72f33921 NA |
1052 | { |
1053 | ctf_type_t *t = start; | |
1054 | ||
1055 | while ((uintptr_t) t < ((uintptr_t) start) + len) | |
1056 | { | |
1057 | swap_thing (t->ctt_name); | |
1058 | swap_thing (t->ctt_info); | |
1059 | swap_thing (t->ctt_size); | |
1060 | ||
1061 | uint32_t kind = CTF_V2_INFO_KIND (t->ctt_info); | |
1062 | size_t size = t->ctt_size; | |
1063 | uint32_t vlen = CTF_V2_INFO_VLEN (t->ctt_info); | |
926c9e76 | 1064 | size_t vbytes = get_vbytes_v2 (fp, kind, size, vlen); |
72f33921 NA |
1065 | |
1066 | if (_libctf_unlikely_ (size == CTF_LSIZE_SENT)) | |
1067 | { | |
1068 | swap_thing (t->ctt_lsizehi); | |
1069 | swap_thing (t->ctt_lsizelo); | |
1070 | size = CTF_TYPE_LSIZE (t); | |
1071 | t = (ctf_type_t *) ((uintptr_t) t + sizeof (ctf_type_t)); | |
1072 | } | |
1073 | else | |
1074 | t = (ctf_type_t *) ((uintptr_t) t + sizeof (ctf_stype_t)); | |
1075 | ||
1076 | switch (kind) | |
1077 | { | |
1078 | case CTF_K_FORWARD: | |
1079 | case CTF_K_UNKNOWN: | |
1080 | case CTF_K_POINTER: | |
1081 | case CTF_K_TYPEDEF: | |
1082 | case CTF_K_VOLATILE: | |
1083 | case CTF_K_CONST: | |
1084 | case CTF_K_RESTRICT: | |
1085 | /* These types have no vlen data to swap. */ | |
1086 | assert (vbytes == 0); | |
1087 | break; | |
1088 | ||
1089 | case CTF_K_INTEGER: | |
1090 | case CTF_K_FLOAT: | |
1091 | { | |
1092 | /* These types have a single uint32_t. */ | |
1093 | ||
1094 | uint32_t *item = (uint32_t *) t; | |
1095 | ||
1096 | swap_thing (*item); | |
1097 | break; | |
1098 | } | |
1099 | ||
1100 | case CTF_K_FUNCTION: | |
1101 | { | |
1102 | /* This type has a bunch of uint32_ts. */ | |
1103 | ||
1104 | uint32_t *item = (uint32_t *) t; | |
5ae6af75 | 1105 | ssize_t i; |
72f33921 | 1106 | |
5ae6af75 | 1107 | for (i = vlen; i > 0; item++, i--) |
72f33921 NA |
1108 | swap_thing (*item); |
1109 | break; | |
1110 | } | |
1111 | ||
1112 | case CTF_K_ARRAY: | |
1113 | { | |
1114 | /* This has a single ctf_array_t. */ | |
1115 | ||
1116 | ctf_array_t *a = (ctf_array_t *) t; | |
1117 | ||
1118 | assert (vbytes == sizeof (ctf_array_t)); | |
1119 | swap_thing (a->cta_contents); | |
1120 | swap_thing (a->cta_index); | |
1121 | swap_thing (a->cta_nelems); | |
1122 | ||
1123 | break; | |
1124 | } | |
1125 | ||
1126 | case CTF_K_SLICE: | |
1127 | { | |
1128 | /* This has a single ctf_slice_t. */ | |
1129 | ||
1130 | ctf_slice_t *s = (ctf_slice_t *) t; | |
1131 | ||
1132 | assert (vbytes == sizeof (ctf_slice_t)); | |
1133 | swap_thing (s->cts_type); | |
1134 | swap_thing (s->cts_offset); | |
1135 | swap_thing (s->cts_bits); | |
1136 | ||
1137 | break; | |
1138 | } | |
1139 | ||
1140 | case CTF_K_STRUCT: | |
1141 | case CTF_K_UNION: | |
1142 | { | |
1143 | /* This has an array of ctf_member or ctf_lmember, depending on | |
1144 | size. We could consider it to be a simple array of uint32_t, | |
1145 | but for safety's sake in case these structures ever acquire | |
1146 | non-uint32_t members, do it member by member. */ | |
1147 | ||
1148 | if (_libctf_unlikely_ (size >= CTF_LSTRUCT_THRESH)) | |
1149 | { | |
1150 | ctf_lmember_t *lm = (ctf_lmember_t *) t; | |
5ae6af75 NA |
1151 | ssize_t i; |
1152 | for (i = vlen; i > 0; i--, lm++) | |
72f33921 NA |
1153 | { |
1154 | swap_thing (lm->ctlm_name); | |
1155 | swap_thing (lm->ctlm_offsethi); | |
1156 | swap_thing (lm->ctlm_type); | |
1157 | swap_thing (lm->ctlm_offsetlo); | |
1158 | } | |
1159 | } | |
1160 | else | |
1161 | { | |
1162 | ctf_member_t *m = (ctf_member_t *) t; | |
5ae6af75 NA |
1163 | ssize_t i; |
1164 | for (i = vlen; i > 0; i--, m++) | |
72f33921 NA |
1165 | { |
1166 | swap_thing (m->ctm_name); | |
1167 | swap_thing (m->ctm_offset); | |
1168 | swap_thing (m->ctm_type); | |
1169 | } | |
1170 | } | |
1171 | break; | |
1172 | } | |
1173 | ||
1174 | case CTF_K_ENUM: | |
1175 | { | |
1176 | /* This has an array of ctf_enum_t. */ | |
1177 | ||
1178 | ctf_enum_t *item = (ctf_enum_t *) t; | |
5ae6af75 | 1179 | ssize_t i; |
72f33921 | 1180 | |
5ae6af75 | 1181 | for (i = vlen; i > 0; item++, i--) |
72f33921 NA |
1182 | { |
1183 | swap_thing (item->cte_name); | |
1184 | swap_thing (item->cte_value); | |
1185 | } | |
1186 | break; | |
1187 | } | |
1188 | default: | |
926c9e76 NA |
1189 | ctf_err_warn (fp, 0, ECTF_CORRUPT, |
1190 | _("unhandled CTF kind in endianness conversion: %x"), | |
1191 | kind); | |
72f33921 NA |
1192 | return ECTF_CORRUPT; |
1193 | } | |
1194 | ||
1195 | t = (ctf_type_t *) ((uintptr_t) t + vbytes); | |
1196 | } | |
1197 | ||
1198 | return 0; | |
1199 | } | |
1200 | ||
fd55eae8 | 1201 | /* Flip the endianness of BUF, given the offsets in the (already endian- |
72f33921 NA |
1202 | converted) CTH. |
1203 | ||
1204 | All of this stuff happens before the header is fully initialized, so the | |
1205 | LCTF_*() macros cannot be used yet. Since we do not try to endian-convert v1 | |
1206 | data, this is no real loss. */ | |
1207 | ||
1208 | static int | |
139633c3 | 1209 | flip_ctf (ctf_dict_t *fp, ctf_header_t *cth, unsigned char *buf) |
72f33921 | 1210 | { |
fd55eae8 NA |
1211 | flip_lbls (buf + cth->cth_lbloff, cth->cth_objtoff - cth->cth_lbloff); |
1212 | flip_objts (buf + cth->cth_objtoff, cth->cth_funcoff - cth->cth_objtoff); | |
2db912ba NA |
1213 | flip_objts (buf + cth->cth_funcoff, cth->cth_objtidxoff - cth->cth_funcoff); |
1214 | flip_objts (buf + cth->cth_objtidxoff, cth->cth_funcidxoff - cth->cth_objtidxoff); | |
1215 | flip_objts (buf + cth->cth_funcidxoff, cth->cth_varoff - cth->cth_funcidxoff); | |
fd55eae8 | 1216 | flip_vars (buf + cth->cth_varoff, cth->cth_typeoff - cth->cth_varoff); |
926c9e76 | 1217 | return flip_types (fp, buf + cth->cth_typeoff, cth->cth_stroff - cth->cth_typeoff); |
72f33921 NA |
1218 | } |
1219 | ||
139633c3 | 1220 | /* Set up the ctl hashes in a ctf_dict_t. Called by both writable and |
676c3ecb | 1221 | non-writable dictionary initialization. */ |
139633c3 | 1222 | void ctf_set_ctl_hashes (ctf_dict_t *fp) |
676c3ecb NA |
1223 | { |
1224 | /* Initialize the ctf_lookup_by_name top-level dictionary. We keep an | |
1225 | array of type name prefixes and the corresponding ctf_hash to use. */ | |
1226 | fp->ctf_lookups[0].ctl_prefix = "struct"; | |
1227 | fp->ctf_lookups[0].ctl_len = strlen (fp->ctf_lookups[0].ctl_prefix); | |
1228 | fp->ctf_lookups[0].ctl_hash = &fp->ctf_structs; | |
1229 | fp->ctf_lookups[1].ctl_prefix = "union"; | |
1230 | fp->ctf_lookups[1].ctl_len = strlen (fp->ctf_lookups[1].ctl_prefix); | |
1231 | fp->ctf_lookups[1].ctl_hash = &fp->ctf_unions; | |
1232 | fp->ctf_lookups[2].ctl_prefix = "enum"; | |
1233 | fp->ctf_lookups[2].ctl_len = strlen (fp->ctf_lookups[2].ctl_prefix); | |
1234 | fp->ctf_lookups[2].ctl_hash = &fp->ctf_enums; | |
1235 | fp->ctf_lookups[3].ctl_prefix = _CTF_NULLSTR; | |
1236 | fp->ctf_lookups[3].ctl_len = strlen (fp->ctf_lookups[3].ctl_prefix); | |
1237 | fp->ctf_lookups[3].ctl_hash = &fp->ctf_names; | |
1238 | fp->ctf_lookups[4].ctl_prefix = NULL; | |
1239 | fp->ctf_lookups[4].ctl_len = 0; | |
1240 | fp->ctf_lookups[4].ctl_hash = NULL; | |
1241 | } | |
1242 | ||
72f33921 | 1243 | /* Open a CTF file, mocking up a suitable ctf_sect. */ |
d851ecd3 | 1244 | |
139633c3 | 1245 | ctf_dict_t *ctf_simple_open (const char *ctfsect, size_t ctfsect_size, |
72f33921 NA |
1246 | const char *symsect, size_t symsect_size, |
1247 | size_t symsect_entsize, | |
1248 | const char *strsect, size_t strsect_size, | |
1249 | int *errp) | |
d851ecd3 NA |
1250 | { |
1251 | return ctf_simple_open_internal (ctfsect, ctfsect_size, symsect, symsect_size, | |
1252 | symsect_entsize, strsect, strsect_size, NULL, | |
676c3ecb | 1253 | 0, errp); |
d851ecd3 NA |
1254 | } |
1255 | ||
1256 | /* Open a CTF file, mocking up a suitable ctf_sect and overriding the external | |
1257 | strtab with a synthetic one. */ | |
1258 | ||
139633c3 | 1259 | ctf_dict_t *ctf_simple_open_internal (const char *ctfsect, size_t ctfsect_size, |
d851ecd3 NA |
1260 | const char *symsect, size_t symsect_size, |
1261 | size_t symsect_entsize, | |
1262 | const char *strsect, size_t strsect_size, | |
676c3ecb NA |
1263 | ctf_dynhash_t *syn_strtab, int writable, |
1264 | int *errp) | |
72f33921 NA |
1265 | { |
1266 | ctf_sect_t skeleton; | |
1267 | ||
1268 | ctf_sect_t ctf_sect, sym_sect, str_sect; | |
1269 | ctf_sect_t *ctfsectp = NULL; | |
1270 | ctf_sect_t *symsectp = NULL; | |
1271 | ctf_sect_t *strsectp = NULL; | |
1272 | ||
1273 | skeleton.cts_name = _CTF_SECTION; | |
72f33921 | 1274 | skeleton.cts_entsize = 1; |
72f33921 NA |
1275 | |
1276 | if (ctfsect) | |
1277 | { | |
1278 | memcpy (&ctf_sect, &skeleton, sizeof (struct ctf_sect)); | |
1279 | ctf_sect.cts_data = ctfsect; | |
1280 | ctf_sect.cts_size = ctfsect_size; | |
1281 | ctfsectp = &ctf_sect; | |
1282 | } | |
1283 | ||
1284 | if (symsect) | |
1285 | { | |
1286 | memcpy (&sym_sect, &skeleton, sizeof (struct ctf_sect)); | |
1287 | sym_sect.cts_data = symsect; | |
1288 | sym_sect.cts_size = symsect_size; | |
1289 | sym_sect.cts_entsize = symsect_entsize; | |
1290 | symsectp = &sym_sect; | |
1291 | } | |
1292 | ||
1293 | if (strsect) | |
1294 | { | |
1295 | memcpy (&str_sect, &skeleton, sizeof (struct ctf_sect)); | |
1296 | str_sect.cts_data = strsect; | |
1297 | str_sect.cts_size = strsect_size; | |
1298 | strsectp = &str_sect; | |
1299 | } | |
1300 | ||
676c3ecb NA |
1301 | return ctf_bufopen_internal (ctfsectp, symsectp, strsectp, syn_strtab, |
1302 | writable, errp); | |
72f33921 NA |
1303 | } |
1304 | ||
1305 | /* Decode the specified CTF buffer and optional symbol table, and create a new | |
139633c3 | 1306 | CTF dict representing the symbolic debugging information. This code can |
72f33921 NA |
1307 | be used directly by the debugger, or it can be used as the engine for |
1308 | ctf_fdopen() or ctf_open(), below. */ | |
1309 | ||
139633c3 | 1310 | ctf_dict_t * |
72f33921 NA |
1311 | ctf_bufopen (const ctf_sect_t *ctfsect, const ctf_sect_t *symsect, |
1312 | const ctf_sect_t *strsect, int *errp) | |
d851ecd3 | 1313 | { |
676c3ecb | 1314 | return ctf_bufopen_internal (ctfsect, symsect, strsect, NULL, 0, errp); |
d851ecd3 NA |
1315 | } |
1316 | ||
1317 | /* Like ctf_bufopen, but overriding the external strtab with a synthetic one. */ | |
1318 | ||
139633c3 | 1319 | ctf_dict_t * |
d851ecd3 NA |
1320 | ctf_bufopen_internal (const ctf_sect_t *ctfsect, const ctf_sect_t *symsect, |
1321 | const ctf_sect_t *strsect, ctf_dynhash_t *syn_strtab, | |
676c3ecb | 1322 | int writable, int *errp) |
72f33921 NA |
1323 | { |
1324 | const ctf_preamble_t *pp; | |
fd55eae8 NA |
1325 | size_t hdrsz = sizeof (ctf_header_t); |
1326 | ctf_header_t *hp; | |
139633c3 | 1327 | ctf_dict_t *fp; |
72f33921 NA |
1328 | int foreign_endian = 0; |
1329 | int err; | |
1330 | ||
1331 | libctf_init_debug(); | |
1332 | ||
d851ecd3 NA |
1333 | if ((ctfsect == NULL) || ((symsect != NULL) && |
1334 | ((strsect == NULL) && syn_strtab == NULL))) | |
72f33921 NA |
1335 | return (ctf_set_open_errno (errp, EINVAL)); |
1336 | ||
1337 | if (symsect != NULL && symsect->cts_entsize != sizeof (Elf32_Sym) && | |
1338 | symsect->cts_entsize != sizeof (Elf64_Sym)) | |
1339 | return (ctf_set_open_errno (errp, ECTF_SYMTAB)); | |
1340 | ||
1341 | if (symsect != NULL && symsect->cts_data == NULL) | |
1342 | return (ctf_set_open_errno (errp, ECTF_SYMBAD)); | |
1343 | ||
1344 | if (strsect != NULL && strsect->cts_data == NULL) | |
1345 | return (ctf_set_open_errno (errp, ECTF_STRBAD)); | |
1346 | ||
1347 | if (ctfsect->cts_size < sizeof (ctf_preamble_t)) | |
1348 | return (ctf_set_open_errno (errp, ECTF_NOCTFBUF)); | |
1349 | ||
1350 | pp = (const ctf_preamble_t *) ctfsect->cts_data; | |
1351 | ||
1352 | ctf_dprintf ("ctf_bufopen: magic=0x%x version=%u\n", | |
1353 | pp->ctp_magic, pp->ctp_version); | |
1354 | ||
1355 | /* Validate each part of the CTF header. | |
1356 | ||
1357 | First, we validate the preamble (common to all versions). At that point, | |
1358 | we know the endianness and specific header version, and can validate the | |
1359 | version-specific parts including section offsets and alignments. | |
1360 | ||
1361 | We specifically do not support foreign-endian old versions. */ | |
1362 | ||
1363 | if (_libctf_unlikely_ (pp->ctp_magic != CTF_MAGIC)) | |
1364 | { | |
1365 | if (pp->ctp_magic == bswap_16 (CTF_MAGIC)) | |
1366 | { | |
1367 | if (pp->ctp_version != CTF_VERSION_3) | |
1368 | return (ctf_set_open_errno (errp, ECTF_CTFVERS)); | |
1369 | foreign_endian = 1; | |
1370 | } | |
1371 | else | |
1372 | return (ctf_set_open_errno (errp, ECTF_NOCTFBUF)); | |
1373 | } | |
1374 | ||
1375 | if (_libctf_unlikely_ ((pp->ctp_version < CTF_VERSION_1) | |
1376 | || (pp->ctp_version > CTF_VERSION_3))) | |
1377 | return (ctf_set_open_errno (errp, ECTF_CTFVERS)); | |
1378 | ||
1379 | if ((symsect != NULL) && (pp->ctp_version < CTF_VERSION_2)) | |
1380 | { | |
1381 | /* The symtab can contain function entries which contain embedded ctf | |
1382 | info. We do not support dynamically upgrading such entries (none | |
1383 | should exist in any case, since dwarf2ctf does not create them). */ | |
1384 | ||
1136c379 NA |
1385 | ctf_err_warn (NULL, 0, ECTF_NOTSUP, _("ctf_bufopen: CTF version %d " |
1386 | "symsect not supported"), | |
1387 | pp->ctp_version); | |
72f33921 NA |
1388 | return (ctf_set_open_errno (errp, ECTF_NOTSUP)); |
1389 | } | |
1390 | ||
fd55eae8 NA |
1391 | if (pp->ctp_version < CTF_VERSION_3) |
1392 | hdrsz = sizeof (ctf_header_v2_t); | |
1393 | ||
ec388c16 | 1394 | if (_libctf_unlikely_ (pp->ctp_flags > CTF_F_MAX)) |
1136c379 NA |
1395 | { |
1396 | ctf_err_warn (NULL, 0, ECTF_FLAGS, _("ctf_bufopen: invalid header " | |
1397 | "flags: %x"), | |
1398 | (unsigned int) pp->ctp_flags); | |
1399 | return (ctf_set_open_errno (errp, ECTF_FLAGS)); | |
1400 | } | |
ec388c16 | 1401 | |
fd55eae8 | 1402 | if (ctfsect->cts_size < hdrsz) |
72f33921 NA |
1403 | return (ctf_set_open_errno (errp, ECTF_NOCTFBUF)); |
1404 | ||
139633c3 | 1405 | if ((fp = malloc (sizeof (ctf_dict_t))) == NULL) |
fd55eae8 NA |
1406 | return (ctf_set_open_errno (errp, ENOMEM)); |
1407 | ||
139633c3 | 1408 | memset (fp, 0, sizeof (ctf_dict_t)); |
fd55eae8 | 1409 | |
676c3ecb NA |
1410 | if (writable) |
1411 | fp->ctf_flags |= LCTF_RDWR; | |
1412 | ||
de07e349 | 1413 | if ((fp->ctf_header = malloc (sizeof (struct ctf_header))) == NULL) |
fd55eae8 | 1414 | { |
de07e349 | 1415 | free (fp); |
fd55eae8 NA |
1416 | return (ctf_set_open_errno (errp, ENOMEM)); |
1417 | } | |
1418 | hp = fp->ctf_header; | |
1419 | memcpy (hp, ctfsect->cts_data, hdrsz); | |
1420 | if (pp->ctp_version < CTF_VERSION_3) | |
1421 | upgrade_header (hp); | |
72f33921 NA |
1422 | |
1423 | if (foreign_endian) | |
fd55eae8 | 1424 | flip_header (hp); |
9b32cba4 | 1425 | fp->ctf_openflags = hp->cth_flags; |
fd55eae8 | 1426 | fp->ctf_size = hp->cth_stroff + hp->cth_strlen; |
72f33921 | 1427 | |
fd55eae8 NA |
1428 | ctf_dprintf ("ctf_bufopen: uncompressed size=%lu\n", |
1429 | (unsigned long) fp->ctf_size); | |
72f33921 | 1430 | |
fd55eae8 | 1431 | if (hp->cth_lbloff > fp->ctf_size || hp->cth_objtoff > fp->ctf_size |
2db912ba NA |
1432 | || hp->cth_funcoff > fp->ctf_size || hp->cth_objtidxoff > fp->ctf_size |
1433 | || hp->cth_funcidxoff > fp->ctf_size || hp->cth_typeoff > fp->ctf_size | |
fd55eae8 | 1434 | || hp->cth_stroff > fp->ctf_size) |
1136c379 NA |
1435 | { |
1436 | ctf_err_warn (NULL, 0, ECTF_CORRUPT, _("header offset exceeds CTF size")); | |
1437 | return (ctf_set_open_errno (errp, ECTF_CORRUPT)); | |
1438 | } | |
72f33921 | 1439 | |
fd55eae8 NA |
1440 | if (hp->cth_lbloff > hp->cth_objtoff |
1441 | || hp->cth_objtoff > hp->cth_funcoff | |
1442 | || hp->cth_funcoff > hp->cth_typeoff | |
2db912ba NA |
1443 | || hp->cth_funcoff > hp->cth_objtidxoff |
1444 | || hp->cth_objtidxoff > hp->cth_funcidxoff | |
1445 | || hp->cth_funcidxoff > hp->cth_varoff | |
fd55eae8 | 1446 | || hp->cth_varoff > hp->cth_typeoff || hp->cth_typeoff > hp->cth_stroff) |
1136c379 NA |
1447 | { |
1448 | ctf_err_warn (NULL, 0, ECTF_CORRUPT, _("overlapping CTF sections")); | |
1449 | return (ctf_set_open_errno (errp, ECTF_CORRUPT)); | |
1450 | } | |
72f33921 | 1451 | |
fd55eae8 | 1452 | if ((hp->cth_lbloff & 3) || (hp->cth_objtoff & 2) |
2db912ba NA |
1453 | || (hp->cth_funcoff & 2) || (hp->cth_objtidxoff & 2) |
1454 | || (hp->cth_funcidxoff & 2) || (hp->cth_varoff & 3) | |
fd55eae8 | 1455 | || (hp->cth_typeoff & 3)) |
1136c379 NA |
1456 | { |
1457 | ctf_err_warn (NULL, 0, ECTF_CORRUPT, | |
1458 | _("CTF sections not properly aligned")); | |
1459 | return (ctf_set_open_errno (errp, ECTF_CORRUPT)); | |
1460 | } | |
1461 | ||
1462 | /* This invariant will be lifted in v4, but for now it is true. */ | |
1463 | ||
1464 | if ((hp->cth_funcidxoff - hp->cth_objtidxoff != 0) && | |
1465 | (hp->cth_funcidxoff - hp->cth_objtidxoff | |
1466 | != hp->cth_funcoff - hp->cth_objtoff)) | |
1467 | { | |
1468 | ctf_err_warn (NULL, 0, ECTF_CORRUPT, | |
1469 | _("Object index section exists is neither empty nor the " | |
1470 | "same length as the object section: %u versus %u " | |
1471 | "bytes"), hp->cth_funcoff - hp->cth_objtoff, | |
1472 | hp->cth_funcidxoff - hp->cth_objtidxoff); | |
1473 | return (ctf_set_open_errno (errp, ECTF_CORRUPT)); | |
1474 | } | |
1475 | ||
1476 | if ((hp->cth_varoff - hp->cth_funcidxoff != 0) && | |
1477 | (hp->cth_varoff - hp->cth_funcidxoff | |
1478 | != hp->cth_objtidxoff - hp->cth_funcoff)) | |
1479 | { | |
1480 | ctf_err_warn (NULL, 0, ECTF_CORRUPT, | |
1481 | _("Function index section exists is neither empty nor the " | |
1482 | "same length as the function section: %u versus %u " | |
1483 | "bytes"), hp->cth_objtidxoff - hp->cth_funcoff, | |
1484 | hp->cth_varoff - hp->cth_funcidxoff); | |
1485 | return (ctf_set_open_errno (errp, ECTF_CORRUPT)); | |
1486 | } | |
72f33921 NA |
1487 | |
1488 | /* Once everything is determined to be valid, attempt to decompress the CTF | |
1489 | data buffer if it is compressed, or copy it into new storage if it is not | |
1490 | compressed but needs endian-flipping. Otherwise we just put the data | |
1491 | section's buffer pointer into ctf_buf, below. */ | |
1492 | ||
1493 | /* Note: if this is a v1 buffer, it will be reallocated and expanded by | |
1494 | init_types(). */ | |
1495 | ||
fd55eae8 | 1496 | if (hp->cth_flags & CTF_F_COMPRESS) |
72f33921 | 1497 | { |
a0486bac JM |
1498 | size_t srclen; |
1499 | uLongf dstlen; | |
72f33921 NA |
1500 | const void *src; |
1501 | int rc = Z_OK; | |
1502 | ||
fd55eae8 NA |
1503 | /* We are allocating this ourselves, so we can drop the ctf header |
1504 | copy in favour of ctf->ctf_header. */ | |
72f33921 | 1505 | |
de07e349 | 1506 | if ((fp->ctf_base = malloc (fp->ctf_size)) == NULL) |
fd55eae8 NA |
1507 | { |
1508 | err = ECTF_ZALLOC; | |
1509 | goto bad; | |
1510 | } | |
1511 | fp->ctf_dynbase = fp->ctf_base; | |
1512 | hp->cth_flags &= ~CTF_F_COMPRESS; | |
72f33921 NA |
1513 | |
1514 | src = (unsigned char *) ctfsect->cts_data + hdrsz; | |
1515 | srclen = ctfsect->cts_size - hdrsz; | |
fd55eae8 NA |
1516 | dstlen = fp->ctf_size; |
1517 | fp->ctf_buf = fp->ctf_base; | |
72f33921 | 1518 | |
fd55eae8 | 1519 | if ((rc = uncompress (fp->ctf_base, &dstlen, src, srclen)) != Z_OK) |
72f33921 | 1520 | { |
926c9e76 NA |
1521 | ctf_err_warn (NULL, 0, ECTF_DECOMPRESS, _("zlib inflate err: %s"), |
1522 | zError (rc)); | |
fd55eae8 NA |
1523 | err = ECTF_DECOMPRESS; |
1524 | goto bad; | |
72f33921 NA |
1525 | } |
1526 | ||
fd55eae8 | 1527 | if ((size_t) dstlen != fp->ctf_size) |
72f33921 | 1528 | { |
926c9e76 NA |
1529 | ctf_err_warn (NULL, 0, ECTF_CORRUPT, |
1530 | _("zlib inflate short: got %lu of %lu bytes"), | |
1531 | (unsigned long) dstlen, (unsigned long) fp->ctf_size); | |
fd55eae8 NA |
1532 | err = ECTF_CORRUPT; |
1533 | goto bad; | |
72f33921 | 1534 | } |
72f33921 NA |
1535 | } |
1536 | else if (foreign_endian) | |
1537 | { | |
de07e349 | 1538 | if ((fp->ctf_base = malloc (fp->ctf_size)) == NULL) |
fd55eae8 NA |
1539 | { |
1540 | err = ECTF_ZALLOC; | |
1541 | goto bad; | |
1542 | } | |
1543 | fp->ctf_dynbase = fp->ctf_base; | |
1544 | memcpy (fp->ctf_base, ((unsigned char *) ctfsect->cts_data) + hdrsz, | |
1545 | fp->ctf_size); | |
1546 | fp->ctf_buf = fp->ctf_base; | |
72f33921 NA |
1547 | } |
1548 | else | |
fd55eae8 NA |
1549 | { |
1550 | /* We are just using the section passed in -- but its header may be an old | |
1551 | version. Point ctf_buf past the old header, and never touch it | |
1552 | again. */ | |
1553 | fp->ctf_base = (unsigned char *) ctfsect->cts_data; | |
1554 | fp->ctf_dynbase = NULL; | |
1555 | fp->ctf_buf = fp->ctf_base + hdrsz; | |
1556 | } | |
72f33921 NA |
1557 | |
1558 | /* Once we have uncompressed and validated the CTF data buffer, we can | |
139633c3 | 1559 | proceed with initializing the ctf_dict_t we allocated above. |
72f33921 NA |
1560 | |
1561 | Nothing that depends on buf or base should be set directly in this function | |
1562 | before the init_types() call, because it may be reallocated during | |
1563 | transparent upgrade if this recension of libctf is so configured: see | |
fd55eae8 | 1564 | ctf_set_base(). */ |
72f33921 | 1565 | |
fd55eae8 | 1566 | ctf_set_version (fp, hp, hp->cth_version); |
f5e9c9bd | 1567 | ctf_str_create_atoms (fp); |
fd55eae8 | 1568 | fp->ctf_parmax = CTF_MAX_PTYPE; |
72f33921 NA |
1569 | memcpy (&fp->ctf_data, ctfsect, sizeof (ctf_sect_t)); |
1570 | ||
1571 | if (symsect != NULL) | |
1572 | { | |
1573 | memcpy (&fp->ctf_symtab, symsect, sizeof (ctf_sect_t)); | |
1574 | memcpy (&fp->ctf_strtab, strsect, sizeof (ctf_sect_t)); | |
1575 | } | |
1576 | ||
1577 | if (fp->ctf_data.cts_name != NULL) | |
de07e349 NA |
1578 | if ((fp->ctf_data.cts_name = strdup (fp->ctf_data.cts_name)) == NULL) |
1579 | { | |
1580 | err = ENOMEM; | |
1581 | goto bad; | |
1582 | } | |
72f33921 | 1583 | if (fp->ctf_symtab.cts_name != NULL) |
de07e349 NA |
1584 | if ((fp->ctf_symtab.cts_name = strdup (fp->ctf_symtab.cts_name)) == NULL) |
1585 | { | |
1586 | err = ENOMEM; | |
1587 | goto bad; | |
1588 | } | |
72f33921 | 1589 | if (fp->ctf_strtab.cts_name != NULL) |
de07e349 NA |
1590 | if ((fp->ctf_strtab.cts_name = strdup (fp->ctf_strtab.cts_name)) == NULL) |
1591 | { | |
1592 | err = ENOMEM; | |
1593 | goto bad; | |
1594 | } | |
72f33921 NA |
1595 | |
1596 | if (fp->ctf_data.cts_name == NULL) | |
1597 | fp->ctf_data.cts_name = _CTF_NULLSTR; | |
1598 | if (fp->ctf_symtab.cts_name == NULL) | |
1599 | fp->ctf_symtab.cts_name = _CTF_NULLSTR; | |
1600 | if (fp->ctf_strtab.cts_name == NULL) | |
1601 | fp->ctf_strtab.cts_name = _CTF_NULLSTR; | |
1602 | ||
1603 | if (strsect != NULL) | |
1604 | { | |
1605 | fp->ctf_str[CTF_STRTAB_1].cts_strs = strsect->cts_data; | |
1606 | fp->ctf_str[CTF_STRTAB_1].cts_len = strsect->cts_size; | |
1607 | } | |
d851ecd3 | 1608 | fp->ctf_syn_ext_strtab = syn_strtab; |
72f33921 NA |
1609 | |
1610 | if (foreign_endian && | |
926c9e76 | 1611 | (err = flip_ctf (fp, hp, fp->ctf_buf)) != 0) |
72f33921 NA |
1612 | { |
1613 | /* We can be certain that flip_ctf() will have endian-flipped everything | |
fa56cdcd NA |
1614 | other than the types table when we return. In particular the header |
1615 | is fine, so set it, to allow freeing to use the usual code path. */ | |
72f33921 | 1616 | |
fd55eae8 | 1617 | ctf_set_base (fp, hp, fp->ctf_base); |
72f33921 NA |
1618 | goto bad; |
1619 | } | |
1620 | ||
fd55eae8 | 1621 | ctf_set_base (fp, hp, fp->ctf_base); |
72f33921 | 1622 | |
139633c3 NA |
1623 | /* No need to do anything else for dynamic dicts: they do not support symbol |
1624 | lookups, and the type table is maintained in the dthashes. */ | |
676c3ecb NA |
1625 | if (fp->ctf_flags & LCTF_RDWR) |
1626 | { | |
1627 | fp->ctf_refcnt = 1; | |
1628 | return fp; | |
1629 | } | |
1630 | ||
fd55eae8 NA |
1631 | if ((err = init_types (fp, hp)) != 0) |
1632 | goto bad; | |
72f33921 | 1633 | |
1136c379 NA |
1634 | /* Allocate and initialize the symtab translation table, pointed to by |
1635 | ctf_sxlate, and the corresponding index sections. This table may be too | |
1636 | large for the actual size of the object and function info sections: if so, | |
1637 | ctf_nsyms will be adjusted and the excess will never be used. It's | |
1638 | possible to do indexed symbol lookups even without a symbol table, so check | |
53651de8 NA |
1639 | even in that case. Initially, we assume the symtab is native-endian: if it |
1640 | isn't, the caller will inform us later by calling ctf_symsect_endianness. */ | |
1641 | #ifdef WORDS_BIGENDIAN | |
1642 | fp->ctf_symsect_little_endian = 0; | |
1643 | #else | |
1644 | fp->ctf_symsect_little_endian = 1; | |
1645 | #endif | |
72f33921 NA |
1646 | |
1647 | if (symsect != NULL) | |
1648 | { | |
1649 | fp->ctf_nsyms = symsect->cts_size / symsect->cts_entsize; | |
de07e349 | 1650 | fp->ctf_sxlate = malloc (fp->ctf_nsyms * sizeof (uint32_t)); |
72f33921 NA |
1651 | |
1652 | if (fp->ctf_sxlate == NULL) | |
1653 | { | |
fd55eae8 | 1654 | err = ENOMEM; |
72f33921 NA |
1655 | goto bad; |
1656 | } | |
72f33921 NA |
1657 | } |
1658 | ||
1136c379 NA |
1659 | if ((err = init_symtab (fp, hp, symsect)) != 0) |
1660 | goto bad; | |
1661 | ||
676c3ecb | 1662 | ctf_set_ctl_hashes (fp); |
72f33921 NA |
1663 | |
1664 | if (symsect != NULL) | |
1665 | { | |
1666 | if (symsect->cts_entsize == sizeof (Elf64_Sym)) | |
1667 | (void) ctf_setmodel (fp, CTF_MODEL_LP64); | |
1668 | else | |
1669 | (void) ctf_setmodel (fp, CTF_MODEL_ILP32); | |
1670 | } | |
1671 | else | |
1672 | (void) ctf_setmodel (fp, CTF_MODEL_NATIVE); | |
1673 | ||
1674 | fp->ctf_refcnt = 1; | |
1675 | return fp; | |
1676 | ||
1677 | bad: | |
fd55eae8 | 1678 | ctf_set_open_errno (errp, err); |
926c9e76 | 1679 | ctf_err_warn_to_open (fp); |
139633c3 | 1680 | ctf_dict_close (fp); |
72f33921 NA |
1681 | return NULL; |
1682 | } | |
1683 | ||
139633c3 NA |
1684 | /* Bump the refcount on the specified CTF dict, to allow export of ctf_dict_t's |
1685 | from iterators that open and close the ctf_dict_t around the loop. (This | |
1686 | does not extend their lifetime beyond that of the ctf_archive_t in which they | |
1687 | are contained.) */ | |
2399827b NA |
1688 | |
1689 | void | |
139633c3 | 1690 | ctf_ref (ctf_dict_t *fp) |
2399827b NA |
1691 | { |
1692 | fp->ctf_refcnt++; | |
1693 | } | |
1694 | ||
139633c3 NA |
1695 | /* Close the specified CTF dict and free associated data structures. Note that |
1696 | ctf_dict_close() is a reference counted operation: if the specified file is | |
1697 | the parent of other active dict, its reference count will be greater than one | |
1698 | and it will be freed later when no active children exist. */ | |
72f33921 NA |
1699 | |
1700 | void | |
139633c3 | 1701 | ctf_dict_close (ctf_dict_t *fp) |
72f33921 NA |
1702 | { |
1703 | ctf_dtdef_t *dtd, *ntd; | |
1704 | ctf_dvdef_t *dvd, *nvd; | |
1136c379 | 1705 | ctf_in_flight_dynsym_t *did, *nid; |
8b37e7b6 | 1706 | ctf_err_warning_t *err, *nerr; |
72f33921 NA |
1707 | |
1708 | if (fp == NULL) | |
139633c3 | 1709 | return; /* Allow ctf_dict_close(NULL) to simplify caller code. */ |
72f33921 | 1710 | |
139633c3 | 1711 | ctf_dprintf ("ctf_dict_close(%p) refcnt=%u\n", (void *) fp, fp->ctf_refcnt); |
72f33921 NA |
1712 | |
1713 | if (fp->ctf_refcnt > 1) | |
1714 | { | |
1715 | fp->ctf_refcnt--; | |
1716 | return; | |
1717 | } | |
1718 | ||
1fa7a0c2 NA |
1719 | /* It is possible to recurse back in here, notably if dicts in the |
1720 | ctf_link_inputs or ctf_link_outputs cite this dict as a parent without | |
1721 | using ctf_import_unref. Do nothing in that case. */ | |
1722 | if (fp->ctf_refcnt == 0) | |
1723 | return; | |
1724 | ||
1725 | fp->ctf_refcnt--; | |
de07e349 NA |
1726 | free (fp->ctf_dyncuname); |
1727 | free (fp->ctf_dynparname); | |
1fa7a0c2 | 1728 | if (fp->ctf_parent && !fp->ctf_parent_unreffed) |
139633c3 | 1729 | ctf_dict_close (fp->ctf_parent); |
72f33921 NA |
1730 | |
1731 | for (dtd = ctf_list_next (&fp->ctf_dtdefs); dtd != NULL; dtd = ntd) | |
1732 | { | |
1733 | ntd = ctf_list_next (dtd); | |
1734 | ctf_dtd_delete (fp, dtd); | |
1735 | } | |
1736 | ctf_dynhash_destroy (fp->ctf_dthash); | |
676c3ecb NA |
1737 | if (fp->ctf_flags & LCTF_RDWR) |
1738 | { | |
1739 | ctf_dynhash_destroy (fp->ctf_structs.ctn_writable); | |
1740 | ctf_dynhash_destroy (fp->ctf_unions.ctn_writable); | |
1741 | ctf_dynhash_destroy (fp->ctf_enums.ctn_writable); | |
1742 | ctf_dynhash_destroy (fp->ctf_names.ctn_writable); | |
1743 | } | |
1744 | else | |
1745 | { | |
1746 | ctf_hash_destroy (fp->ctf_structs.ctn_readonly); | |
1747 | ctf_hash_destroy (fp->ctf_unions.ctn_readonly); | |
1748 | ctf_hash_destroy (fp->ctf_enums.ctn_readonly); | |
1749 | ctf_hash_destroy (fp->ctf_names.ctn_readonly); | |
1750 | } | |
72f33921 NA |
1751 | |
1752 | for (dvd = ctf_list_next (&fp->ctf_dvdefs); dvd != NULL; dvd = nvd) | |
1753 | { | |
1754 | nvd = ctf_list_next (dvd); | |
1755 | ctf_dvd_delete (fp, dvd); | |
1756 | } | |
1757 | ctf_dynhash_destroy (fp->ctf_dvhash); | |
1136c379 NA |
1758 | |
1759 | free (fp->ctf_funcidx_sxlate); | |
1760 | free (fp->ctf_objtidx_sxlate); | |
1761 | ctf_dynhash_destroy (fp->ctf_objthash); | |
1762 | ctf_dynhash_destroy (fp->ctf_funchash); | |
1763 | free (fp->ctf_dynsymidx); | |
1764 | ctf_dynhash_destroy (fp->ctf_dynsyms); | |
1765 | for (did = ctf_list_next (&fp->ctf_in_flight_dynsyms); did != NULL; did = nid) | |
1766 | { | |
1767 | nid = ctf_list_next (did); | |
1768 | ctf_list_delete (&fp->ctf_in_flight_dynsyms, did); | |
1769 | free (did); | |
1770 | } | |
1771 | ||
f5e9c9bd | 1772 | ctf_str_free_atoms (fp); |
de07e349 | 1773 | free (fp->ctf_tmp_typeslice); |
72f33921 | 1774 | |
fd55eae8 | 1775 | if (fp->ctf_data.cts_name != _CTF_NULLSTR) |
de07e349 | 1776 | free ((char *) fp->ctf_data.cts_name); |
72f33921 | 1777 | |
fd55eae8 | 1778 | if (fp->ctf_symtab.cts_name != _CTF_NULLSTR) |
de07e349 | 1779 | free ((char *) fp->ctf_symtab.cts_name); |
72f33921 | 1780 | |
fd55eae8 | 1781 | if (fp->ctf_strtab.cts_name != _CTF_NULLSTR) |
de07e349 | 1782 | free ((char *) fp->ctf_strtab.cts_name); |
72f33921 NA |
1783 | else if (fp->ctf_data_mmapped) |
1784 | ctf_munmap (fp->ctf_data_mmapped, fp->ctf_data_mmapped_len); | |
1785 | ||
de07e349 | 1786 | free (fp->ctf_dynbase); |
72f33921 | 1787 | |
d851ecd3 | 1788 | ctf_dynhash_destroy (fp->ctf_syn_ext_strtab); |
72c83edd NA |
1789 | ctf_dynhash_destroy (fp->ctf_link_inputs); |
1790 | ctf_dynhash_destroy (fp->ctf_link_outputs); | |
886453cb | 1791 | ctf_dynhash_destroy (fp->ctf_link_type_mapping); |
5f54462c NA |
1792 | ctf_dynhash_destroy (fp->ctf_link_in_cu_mapping); |
1793 | ctf_dynhash_destroy (fp->ctf_link_out_cu_mapping); | |
99dc3ebd | 1794 | ctf_dynhash_destroy (fp->ctf_add_processing); |
0f0c11f7 NA |
1795 | ctf_dedup_fini (fp, NULL, 0); |
1796 | ctf_dynset_destroy (fp->ctf_dedup_atoms_alloc); | |
d851ecd3 | 1797 | |
8b37e7b6 NA |
1798 | for (err = ctf_list_next (&fp->ctf_errs_warnings); err != NULL; err = nerr) |
1799 | { | |
1800 | nerr = ctf_list_next (err); | |
1801 | ctf_list_delete (&fp->ctf_errs_warnings, err); | |
1802 | free (err->cew_text); | |
1803 | free (err); | |
1804 | } | |
1805 | ||
de07e349 NA |
1806 | free (fp->ctf_sxlate); |
1807 | free (fp->ctf_txlate); | |
1808 | free (fp->ctf_ptrtab); | |
72f33921 | 1809 | |
de07e349 NA |
1810 | free (fp->ctf_header); |
1811 | free (fp); | |
72f33921 NA |
1812 | } |
1813 | ||
139633c3 NA |
1814 | /* Backward compatibility. */ |
1815 | void | |
1816 | ctf_file_close (ctf_file_t *fp) | |
1817 | { | |
1818 | ctf_dict_close (fp); | |
1819 | } | |
1820 | ||
143dce84 NA |
1821 | /* The converse of ctf_open(). ctf_open() disguises whatever it opens as an |
1822 | archive, so closing one is just like closing an archive. */ | |
1823 | void | |
1824 | ctf_close (ctf_archive_t *arc) | |
1825 | { | |
1826 | ctf_arc_close (arc); | |
1827 | } | |
1828 | ||
139633c3 | 1829 | /* Get the CTF archive from which this ctf_dict_t is derived. */ |
9402cc59 | 1830 | ctf_archive_t * |
139633c3 | 1831 | ctf_get_arc (const ctf_dict_t *fp) |
9402cc59 NA |
1832 | { |
1833 | return fp->ctf_archive; | |
1834 | } | |
1835 | ||
72f33921 | 1836 | /* Return the ctfsect out of the core ctf_impl. Useful for freeing the |
139633c3 | 1837 | ctfsect's data * after ctf_dict_close(), which is why we return the actual |
72f33921 NA |
1838 | structure, not a pointer to it, since that is likely to become a pointer to |
1839 | freed data before the return value is used under the expected use case of | |
139633c3 | 1840 | ctf_getsect()/ ctf_dict_close()/free(). */ |
676c3ecb | 1841 | ctf_sect_t |
139633c3 | 1842 | ctf_getdatasect (const ctf_dict_t *fp) |
72f33921 NA |
1843 | { |
1844 | return fp->ctf_data; | |
1845 | } | |
1846 | ||
97a2a623 NA |
1847 | ctf_sect_t |
1848 | ctf_getsymsect (const ctf_dict_t *fp) | |
1849 | { | |
1850 | return fp->ctf_symtab; | |
1851 | } | |
1852 | ||
1853 | ctf_sect_t | |
1854 | ctf_getstrsect (const ctf_dict_t *fp) | |
1855 | { | |
1856 | return fp->ctf_strtab; | |
1857 | } | |
1858 | ||
53651de8 NA |
1859 | /* Set the endianness of the symbol table attached to FP. */ |
1860 | void | |
1861 | ctf_symsect_endianness (ctf_dict_t *fp, int little_endian) | |
1862 | { | |
1863 | int old_endianness = fp->ctf_symsect_little_endian; | |
1864 | ||
1865 | fp->ctf_symsect_little_endian = !!little_endian; | |
1866 | ||
1867 | /* If we already have a symtab translation table, we need to repopulate it if | |
1868 | our idea of the endianness has changed. */ | |
1869 | ||
1870 | if (old_endianness != fp->ctf_symsect_little_endian | |
1871 | && fp->ctf_sxlate != NULL && fp->ctf_symtab.cts_data != NULL) | |
1872 | assert (init_symtab (fp, fp->ctf_header, &fp->ctf_symtab) == 0); | |
1873 | } | |
1874 | ||
139633c3 NA |
1875 | /* Return the CTF handle for the parent CTF dict, if one exists. Otherwise |
1876 | return NULL to indicate this dict has no imported parent. */ | |
1877 | ctf_dict_t * | |
1878 | ctf_parent_dict (ctf_dict_t *fp) | |
72f33921 NA |
1879 | { |
1880 | return fp->ctf_parent; | |
1881 | } | |
1882 | ||
139633c3 NA |
1883 | /* Backward compatibility. */ |
1884 | ctf_dict_t * | |
1885 | ctf_parent_file (ctf_dict_t *fp) | |
1886 | { | |
1887 | return ctf_parent_dict (fp); | |
1888 | } | |
1889 | ||
1890 | /* Return the name of the parent CTF dict, if one exists, or NULL otherwise. */ | |
72f33921 | 1891 | const char * |
139633c3 | 1892 | ctf_parent_name (ctf_dict_t *fp) |
72f33921 NA |
1893 | { |
1894 | return fp->ctf_parname; | |
1895 | } | |
1896 | ||
1897 | /* Set the parent name. It is an error to call this routine without calling | |
1898 | ctf_import() at some point. */ | |
de07e349 | 1899 | int |
139633c3 | 1900 | ctf_parent_name_set (ctf_dict_t *fp, const char *name) |
72f33921 NA |
1901 | { |
1902 | if (fp->ctf_dynparname != NULL) | |
de07e349 | 1903 | free (fp->ctf_dynparname); |
72f33921 | 1904 | |
de07e349 NA |
1905 | if ((fp->ctf_dynparname = strdup (name)) == NULL) |
1906 | return (ctf_set_errno (fp, ENOMEM)); | |
72f33921 | 1907 | fp->ctf_parname = fp->ctf_dynparname; |
de07e349 | 1908 | return 0; |
72f33921 NA |
1909 | } |
1910 | ||
fd55eae8 | 1911 | /* Return the name of the compilation unit this CTF file applies to. Usually |
139633c3 | 1912 | non-NULL only for non-parent dicts. */ |
fd55eae8 | 1913 | const char * |
139633c3 | 1914 | ctf_cuname (ctf_dict_t *fp) |
fd55eae8 NA |
1915 | { |
1916 | return fp->ctf_cuname; | |
1917 | } | |
1918 | ||
1919 | /* Set the compilation unit name. */ | |
de07e349 | 1920 | int |
139633c3 | 1921 | ctf_cuname_set (ctf_dict_t *fp, const char *name) |
fd55eae8 NA |
1922 | { |
1923 | if (fp->ctf_dyncuname != NULL) | |
de07e349 | 1924 | free (fp->ctf_dyncuname); |
fd55eae8 | 1925 | |
de07e349 NA |
1926 | if ((fp->ctf_dyncuname = strdup (name)) == NULL) |
1927 | return (ctf_set_errno (fp, ENOMEM)); | |
fd55eae8 | 1928 | fp->ctf_cuname = fp->ctf_dyncuname; |
de07e349 | 1929 | return 0; |
fd55eae8 NA |
1930 | } |
1931 | ||
139633c3 NA |
1932 | /* Import the types from the specified parent dict by storing a pointer to it in |
1933 | ctf_parent and incrementing its reference count. Only one parent is allowed: | |
1934 | if a parent already exists, it is replaced by the new parent. */ | |
72f33921 | 1935 | int |
139633c3 | 1936 | ctf_import (ctf_dict_t *fp, ctf_dict_t *pfp) |
72f33921 NA |
1937 | { |
1938 | if (fp == NULL || fp == pfp || (pfp != NULL && pfp->ctf_refcnt == 0)) | |
1939 | return (ctf_set_errno (fp, EINVAL)); | |
1940 | ||
1941 | if (pfp != NULL && pfp->ctf_dmodel != fp->ctf_dmodel) | |
1942 | return (ctf_set_errno (fp, ECTF_DMODEL)); | |
1943 | ||
1fa7a0c2 | 1944 | if (fp->ctf_parent && !fp->ctf_parent_unreffed) |
139633c3 | 1945 | ctf_dict_close (fp->ctf_parent); |
1fa7a0c2 NA |
1946 | fp->ctf_parent = NULL; |
1947 | ||
1948 | if (pfp != NULL) | |
de07e349 | 1949 | { |
1fa7a0c2 NA |
1950 | int err; |
1951 | ||
1952 | if (fp->ctf_parname == NULL) | |
1953 | if ((err = ctf_parent_name_set (fp, "PARENT")) < 0) | |
1954 | return err; | |
1955 | ||
1956 | fp->ctf_flags |= LCTF_CHILD; | |
1957 | pfp->ctf_refcnt++; | |
1958 | fp->ctf_parent_unreffed = 0; | |
de07e349 | 1959 | } |
72f33921 | 1960 | |
1fa7a0c2 NA |
1961 | fp->ctf_parent = pfp; |
1962 | return 0; | |
1963 | } | |
1964 | ||
1965 | /* Like ctf_import, but does not increment the refcount on the imported parent | |
1966 | or close it at any point: as a result it can go away at any time and the | |
1967 | caller must do all freeing itself. Used internally to avoid refcount | |
1968 | loops. */ | |
1969 | int | |
139633c3 | 1970 | ctf_import_unref (ctf_dict_t *fp, ctf_dict_t *pfp) |
1fa7a0c2 NA |
1971 | { |
1972 | if (fp == NULL || fp == pfp || (pfp != NULL && pfp->ctf_refcnt == 0)) | |
1973 | return (ctf_set_errno (fp, EINVAL)); | |
1974 | ||
1975 | if (pfp != NULL && pfp->ctf_dmodel != fp->ctf_dmodel) | |
1976 | return (ctf_set_errno (fp, ECTF_DMODEL)); | |
1977 | ||
1978 | if (fp->ctf_parent && !fp->ctf_parent_unreffed) | |
139633c3 | 1979 | ctf_dict_close (fp->ctf_parent); |
1fa7a0c2 NA |
1980 | fp->ctf_parent = NULL; |
1981 | ||
72f33921 NA |
1982 | if (pfp != NULL) |
1983 | { | |
de07e349 | 1984 | int err; |
72f33921 NA |
1985 | |
1986 | if (fp->ctf_parname == NULL) | |
de07e349 NA |
1987 | if ((err = ctf_parent_name_set (fp, "PARENT")) < 0) |
1988 | return err; | |
1989 | ||
1990 | fp->ctf_flags |= LCTF_CHILD; | |
1fa7a0c2 | 1991 | fp->ctf_parent_unreffed = 1; |
72f33921 | 1992 | } |
ad613f1d | 1993 | |
72f33921 NA |
1994 | fp->ctf_parent = pfp; |
1995 | return 0; | |
1996 | } | |
1997 | ||
139633c3 | 1998 | /* Set the data model constant for the CTF dict. */ |
72f33921 | 1999 | int |
139633c3 | 2000 | ctf_setmodel (ctf_dict_t *fp, int model) |
72f33921 NA |
2001 | { |
2002 | const ctf_dmodel_t *dp; | |
2003 | ||
2004 | for (dp = _libctf_models; dp->ctd_name != NULL; dp++) | |
2005 | { | |
2006 | if (dp->ctd_code == model) | |
2007 | { | |
2008 | fp->ctf_dmodel = dp; | |
2009 | return 0; | |
2010 | } | |
2011 | } | |
2012 | ||
2013 | return (ctf_set_errno (fp, EINVAL)); | |
2014 | } | |
2015 | ||
139633c3 | 2016 | /* Return the data model constant for the CTF dict. */ |
72f33921 | 2017 | int |
139633c3 | 2018 | ctf_getmodel (ctf_dict_t *fp) |
72f33921 NA |
2019 | { |
2020 | return fp->ctf_dmodel->ctd_code; | |
2021 | } | |
2022 | ||
139633c3 | 2023 | /* The caller can hang an arbitrary pointer off each ctf_dict_t using this |
a0486bac | 2024 | function. */ |
72f33921 | 2025 | void |
139633c3 | 2026 | ctf_setspecific (ctf_dict_t *fp, void *data) |
72f33921 NA |
2027 | { |
2028 | fp->ctf_specific = data; | |
2029 | } | |
2030 | ||
a0486bac | 2031 | /* Retrieve the arbitrary pointer again. */ |
72f33921 | 2032 | void * |
139633c3 | 2033 | ctf_getspecific (ctf_dict_t *fp) |
72f33921 NA |
2034 | { |
2035 | return fp->ctf_specific; | |
2036 | } |