Commit | Line | Data |
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47d546f4 | 1 | /* CTF file creation. |
b3adc24a | 2 | Copyright (C) 2019-2020 Free Software Foundation, Inc. |
47d546f4 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 <sys/param.h> | |
22 | #include <assert.h> | |
23 | #include <string.h> | |
c1401ecc | 24 | #include <unistd.h> |
47d546f4 NA |
25 | #include <zlib.h> |
26 | ||
a0486bac JM |
27 | #ifndef roundup |
28 | #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) | |
29 | #endif | |
30 | ||
676c3ecb NA |
31 | /* Make sure the ptrtab has enough space for at least one more type. |
32 | ||
33 | We start with 4KiB of ptrtab, enough for a thousand types, then grow it 25% | |
34 | at a time. */ | |
35 | ||
36 | static int | |
37 | ctf_grow_ptrtab (ctf_file_t *fp) | |
38 | { | |
39 | size_t new_ptrtab_len = fp->ctf_ptrtab_len; | |
40 | ||
41 | /* We allocate one more ptrtab entry than we need, for the initial zero, | |
42 | plus one because the caller will probably allocate a new type. */ | |
43 | ||
44 | if (fp->ctf_ptrtab == NULL) | |
45 | new_ptrtab_len = 1024; | |
46 | else if ((fp->ctf_typemax + 2) > fp->ctf_ptrtab_len) | |
47 | new_ptrtab_len = fp->ctf_ptrtab_len * 1.25; | |
48 | ||
49 | if (new_ptrtab_len != fp->ctf_ptrtab_len) | |
50 | { | |
51 | uint32_t *new_ptrtab; | |
52 | ||
53 | if ((new_ptrtab = realloc (fp->ctf_ptrtab, | |
54 | new_ptrtab_len * sizeof (uint32_t))) == NULL) | |
55 | return (ctf_set_errno (fp, ENOMEM)); | |
56 | ||
57 | fp->ctf_ptrtab = new_ptrtab; | |
58 | memset (fp->ctf_ptrtab + fp->ctf_ptrtab_len, 0, | |
59 | (new_ptrtab_len - fp->ctf_ptrtab_len) * sizeof (uint32_t)); | |
60 | fp->ctf_ptrtab_len = new_ptrtab_len; | |
61 | } | |
62 | return 0; | |
63 | } | |
64 | ||
47d546f4 NA |
65 | /* To create an empty CTF container, we just declare a zeroed header and call |
66 | ctf_bufopen() on it. If ctf_bufopen succeeds, we mark the new container r/w | |
f5e9c9bd NA |
67 | and initialize the dynamic members. We start assigning type IDs at 1 because |
68 | type ID 0 is used as a sentinel and a not-found indicator. */ | |
47d546f4 NA |
69 | |
70 | ctf_file_t * | |
71 | ctf_create (int *errp) | |
72 | { | |
73 | static const ctf_header_t hdr = { .cth_preamble = { CTF_MAGIC, CTF_VERSION, 0 } }; | |
74 | ||
75 | ctf_dynhash_t *dthash; | |
76 | ctf_dynhash_t *dvhash; | |
676c3ecb | 77 | ctf_dynhash_t *structs = NULL, *unions = NULL, *enums = NULL, *names = NULL; |
47d546f4 NA |
78 | ctf_sect_t cts; |
79 | ctf_file_t *fp; | |
80 | ||
81 | libctf_init_debug(); | |
82 | dthash = ctf_dynhash_create (ctf_hash_integer, ctf_hash_eq_integer, | |
83 | NULL, NULL); | |
84 | if (dthash == NULL) | |
85 | { | |
86 | ctf_set_open_errno (errp, EAGAIN); | |
87 | goto err; | |
88 | } | |
89 | ||
90 | dvhash = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, | |
91 | NULL, NULL); | |
92 | if (dvhash == NULL) | |
93 | { | |
94 | ctf_set_open_errno (errp, EAGAIN); | |
95 | goto err_dt; | |
96 | } | |
97 | ||
676c3ecb NA |
98 | structs = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, |
99 | NULL, NULL); | |
100 | unions = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, | |
101 | NULL, NULL); | |
102 | enums = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, | |
103 | NULL, NULL); | |
104 | names = ctf_dynhash_create (ctf_hash_string, ctf_hash_eq_string, | |
105 | NULL, NULL); | |
106 | if (!structs || !unions || !enums || !names) | |
47d546f4 NA |
107 | { |
108 | ctf_set_open_errno (errp, EAGAIN); | |
109 | goto err_dv; | |
110 | } | |
111 | ||
112 | cts.cts_name = _CTF_SECTION; | |
47d546f4 NA |
113 | cts.cts_data = &hdr; |
114 | cts.cts_size = sizeof (hdr); | |
115 | cts.cts_entsize = 1; | |
47d546f4 | 116 | |
676c3ecb NA |
117 | if ((fp = ctf_bufopen_internal (&cts, NULL, NULL, NULL, 1, errp)) == NULL) |
118 | goto err_dv; | |
47d546f4 | 119 | |
676c3ecb NA |
120 | fp->ctf_structs.ctn_writable = structs; |
121 | fp->ctf_unions.ctn_writable = unions; | |
122 | fp->ctf_enums.ctn_writable = enums; | |
123 | fp->ctf_names.ctn_writable = names; | |
47d546f4 NA |
124 | fp->ctf_dthash = dthash; |
125 | fp->ctf_dvhash = dvhash; | |
47d546f4 | 126 | fp->ctf_dtoldid = 0; |
f57cf0e3 | 127 | fp->ctf_snapshots = 1; |
47d546f4 NA |
128 | fp->ctf_snapshot_lu = 0; |
129 | ||
676c3ecb NA |
130 | ctf_set_ctl_hashes (fp); |
131 | ctf_setmodel (fp, CTF_MODEL_NATIVE); | |
132 | if (ctf_grow_ptrtab (fp) < 0) | |
133 | { | |
134 | ctf_set_open_errno (errp, ctf_errno (fp)); | |
135 | ctf_file_close (fp); | |
136 | return NULL; | |
137 | } | |
138 | ||
47d546f4 NA |
139 | return fp; |
140 | ||
47d546f4 | 141 | err_dv: |
676c3ecb NA |
142 | ctf_dynhash_destroy (structs); |
143 | ctf_dynhash_destroy (unions); | |
144 | ctf_dynhash_destroy (enums); | |
145 | ctf_dynhash_destroy (names); | |
47d546f4 NA |
146 | ctf_dynhash_destroy (dvhash); |
147 | err_dt: | |
148 | ctf_dynhash_destroy (dthash); | |
149 | err: | |
150 | return NULL; | |
151 | } | |
152 | ||
153 | static unsigned char * | |
f5e9c9bd | 154 | ctf_copy_smembers (ctf_file_t *fp, ctf_dtdef_t *dtd, unsigned char *t) |
47d546f4 NA |
155 | { |
156 | ctf_dmdef_t *dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
157 | ctf_member_t ctm; | |
158 | ||
159 | for (; dmd != NULL; dmd = ctf_list_next (dmd)) | |
160 | { | |
f5e9c9bd | 161 | ctf_member_t *copied; |
47d546f4 | 162 | |
f5e9c9bd | 163 | ctm.ctm_name = 0; |
47d546f4 NA |
164 | ctm.ctm_type = (uint32_t) dmd->dmd_type; |
165 | ctm.ctm_offset = (uint32_t) dmd->dmd_offset; | |
166 | ||
167 | memcpy (t, &ctm, sizeof (ctm)); | |
f5e9c9bd NA |
168 | copied = (ctf_member_t *) t; |
169 | if (dmd->dmd_name) | |
170 | ctf_str_add_ref (fp, dmd->dmd_name, &copied->ctm_name); | |
171 | ||
47d546f4 NA |
172 | t += sizeof (ctm); |
173 | } | |
174 | ||
175 | return t; | |
176 | } | |
177 | ||
178 | static unsigned char * | |
f5e9c9bd | 179 | ctf_copy_lmembers (ctf_file_t *fp, ctf_dtdef_t *dtd, unsigned char *t) |
47d546f4 NA |
180 | { |
181 | ctf_dmdef_t *dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
182 | ctf_lmember_t ctlm; | |
183 | ||
184 | for (; dmd != NULL; dmd = ctf_list_next (dmd)) | |
185 | { | |
f5e9c9bd | 186 | ctf_lmember_t *copied; |
47d546f4 | 187 | |
f5e9c9bd | 188 | ctlm.ctlm_name = 0; |
47d546f4 NA |
189 | ctlm.ctlm_type = (uint32_t) dmd->dmd_type; |
190 | ctlm.ctlm_offsethi = CTF_OFFSET_TO_LMEMHI (dmd->dmd_offset); | |
191 | ctlm.ctlm_offsetlo = CTF_OFFSET_TO_LMEMLO (dmd->dmd_offset); | |
192 | ||
193 | memcpy (t, &ctlm, sizeof (ctlm)); | |
f5e9c9bd NA |
194 | copied = (ctf_lmember_t *) t; |
195 | if (dmd->dmd_name) | |
196 | ctf_str_add_ref (fp, dmd->dmd_name, &copied->ctlm_name); | |
197 | ||
47d546f4 NA |
198 | t += sizeof (ctlm); |
199 | } | |
200 | ||
201 | return t; | |
202 | } | |
203 | ||
204 | static unsigned char * | |
f5e9c9bd | 205 | ctf_copy_emembers (ctf_file_t *fp, ctf_dtdef_t *dtd, unsigned char *t) |
47d546f4 NA |
206 | { |
207 | ctf_dmdef_t *dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
208 | ctf_enum_t cte; | |
209 | ||
210 | for (; dmd != NULL; dmd = ctf_list_next (dmd)) | |
211 | { | |
f5e9c9bd NA |
212 | ctf_enum_t *copied; |
213 | ||
47d546f4 | 214 | cte.cte_value = dmd->dmd_value; |
47d546f4 | 215 | memcpy (t, &cte, sizeof (cte)); |
f5e9c9bd NA |
216 | copied = (ctf_enum_t *) t; |
217 | ctf_str_add_ref (fp, dmd->dmd_name, &copied->cte_name); | |
47d546f4 NA |
218 | t += sizeof (cte); |
219 | } | |
220 | ||
221 | return t; | |
222 | } | |
223 | ||
47d546f4 NA |
224 | /* Sort a newly-constructed static variable array. */ |
225 | ||
d851ecd3 NA |
226 | typedef struct ctf_sort_var_arg_cb |
227 | { | |
228 | ctf_file_t *fp; | |
229 | ctf_strs_t *strtab; | |
230 | } ctf_sort_var_arg_cb_t; | |
231 | ||
47d546f4 | 232 | static int |
d851ecd3 | 233 | ctf_sort_var (const void *one_, const void *two_, void *arg_) |
47d546f4 NA |
234 | { |
235 | const ctf_varent_t *one = one_; | |
236 | const ctf_varent_t *two = two_; | |
d851ecd3 | 237 | ctf_sort_var_arg_cb_t *arg = arg_; |
47d546f4 | 238 | |
d851ecd3 NA |
239 | return (strcmp (ctf_strraw_explicit (arg->fp, one->ctv_name, arg->strtab), |
240 | ctf_strraw_explicit (arg->fp, two->ctv_name, arg->strtab))); | |
47d546f4 NA |
241 | } |
242 | ||
676c3ecb | 243 | /* Compatibility: just update the threshold for ctf_discard. */ |
47d546f4 NA |
244 | int |
245 | ctf_update (ctf_file_t *fp) | |
676c3ecb NA |
246 | { |
247 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
248 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
249 | ||
250 | fp->ctf_dtoldid = fp->ctf_typemax; | |
251 | return 0; | |
252 | } | |
253 | ||
254 | /* If the specified CTF container is writable and has been modified, reload this | |
255 | container with the updated type definitions, ready for serialization. In | |
256 | order to make this code and the rest of libctf as simple as possible, we | |
257 | perform updates by taking the dynamic type definitions and creating an | |
258 | in-memory CTF file containing the definitions, and then call | |
259 | ctf_simple_open_internal() on it. We perform one extra trick here for the | |
260 | benefit of callers and to keep our code simple: ctf_simple_open_internal() | |
261 | will return a new ctf_file_t, but we want to keep the fp constant for the | |
262 | caller, so after ctf_simple_open_internal() returns, we use memcpy to swap | |
263 | the interior of the old and new ctf_file_t's, and then free the old. */ | |
264 | int | |
265 | ctf_serialize (ctf_file_t *fp) | |
47d546f4 NA |
266 | { |
267 | ctf_file_t ofp, *nfp; | |
f5e9c9bd | 268 | ctf_header_t hdr, *hdrp; |
47d546f4 NA |
269 | ctf_dtdef_t *dtd; |
270 | ctf_dvdef_t *dvd; | |
271 | ctf_varent_t *dvarents; | |
f5e9c9bd | 272 | ctf_strs_writable_t strtab; |
47d546f4 | 273 | |
f5e9c9bd | 274 | unsigned char *t; |
47d546f4 NA |
275 | unsigned long i; |
276 | size_t buf_size, type_size, nvars; | |
f5e9c9bd | 277 | unsigned char *buf, *newbuf; |
47d546f4 NA |
278 | int err; |
279 | ||
280 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
281 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
282 | ||
283 | /* Update required? */ | |
284 | if (!(fp->ctf_flags & LCTF_DIRTY)) | |
285 | return 0; | |
286 | ||
287 | /* Fill in an initial CTF header. We will leave the label, object, | |
288 | and function sections empty and only output a header, type section, | |
289 | and string table. The type section begins at a 4-byte aligned | |
290 | boundary past the CTF header itself (at relative offset zero). */ | |
291 | ||
292 | memset (&hdr, 0, sizeof (hdr)); | |
293 | hdr.cth_magic = CTF_MAGIC; | |
294 | hdr.cth_version = CTF_VERSION; | |
295 | ||
47d546f4 NA |
296 | /* Iterate through the dynamic type definition list and compute the |
297 | size of the CTF type section we will need to generate. */ | |
298 | ||
299 | for (type_size = 0, dtd = ctf_list_next (&fp->ctf_dtdefs); | |
300 | dtd != NULL; dtd = ctf_list_next (dtd)) | |
301 | { | |
302 | uint32_t kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); | |
303 | uint32_t vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info); | |
304 | ||
305 | if (dtd->dtd_data.ctt_size != CTF_LSIZE_SENT) | |
306 | type_size += sizeof (ctf_stype_t); | |
307 | else | |
308 | type_size += sizeof (ctf_type_t); | |
309 | ||
310 | switch (kind) | |
311 | { | |
312 | case CTF_K_INTEGER: | |
313 | case CTF_K_FLOAT: | |
314 | type_size += sizeof (uint32_t); | |
315 | break; | |
316 | case CTF_K_ARRAY: | |
317 | type_size += sizeof (ctf_array_t); | |
318 | break; | |
319 | case CTF_K_SLICE: | |
320 | type_size += sizeof (ctf_slice_t); | |
321 | break; | |
322 | case CTF_K_FUNCTION: | |
323 | type_size += sizeof (uint32_t) * (vlen + (vlen & 1)); | |
324 | break; | |
325 | case CTF_K_STRUCT: | |
326 | case CTF_K_UNION: | |
327 | if (dtd->dtd_data.ctt_size < CTF_LSTRUCT_THRESH) | |
328 | type_size += sizeof (ctf_member_t) * vlen; | |
329 | else | |
330 | type_size += sizeof (ctf_lmember_t) * vlen; | |
331 | break; | |
332 | case CTF_K_ENUM: | |
333 | type_size += sizeof (ctf_enum_t) * vlen; | |
334 | break; | |
335 | } | |
336 | } | |
337 | ||
338 | /* Computing the number of entries in the CTF variable section is much | |
339 | simpler. */ | |
340 | ||
341 | for (nvars = 0, dvd = ctf_list_next (&fp->ctf_dvdefs); | |
342 | dvd != NULL; dvd = ctf_list_next (dvd), nvars++); | |
343 | ||
f5e9c9bd NA |
344 | /* Compute the size of the CTF buffer we need, sans only the string table, |
345 | then allocate a new buffer and memcpy the finished header to the start of | |
346 | the buffer. (We will adjust this later with strtab length info.) */ | |
47d546f4 NA |
347 | |
348 | hdr.cth_typeoff = hdr.cth_varoff + (nvars * sizeof (ctf_varent_t)); | |
349 | hdr.cth_stroff = hdr.cth_typeoff + type_size; | |
f5e9c9bd | 350 | hdr.cth_strlen = 0; |
47d546f4 NA |
351 | |
352 | buf_size = sizeof (ctf_header_t) + hdr.cth_stroff + hdr.cth_strlen; | |
353 | ||
65365aa8 | 354 | if ((buf = malloc (buf_size)) == NULL) |
47d546f4 NA |
355 | return (ctf_set_errno (fp, EAGAIN)); |
356 | ||
357 | memcpy (buf, &hdr, sizeof (ctf_header_t)); | |
358 | t = (unsigned char *) buf + sizeof (ctf_header_t) + hdr.cth_varoff; | |
47d546f4 | 359 | |
f5e9c9bd NA |
360 | hdrp = (ctf_header_t *) buf; |
361 | if ((fp->ctf_flags & LCTF_CHILD) && (fp->ctf_parname != NULL)) | |
362 | ctf_str_add_ref (fp, fp->ctf_parname, &hdrp->cth_parname); | |
fd55eae8 NA |
363 | if (fp->ctf_cuname != NULL) |
364 | ctf_str_add_ref (fp, fp->ctf_cuname, &hdrp->cth_cuname); | |
47d546f4 | 365 | |
f5e9c9bd NA |
366 | /* Work over the variable list, translating everything into ctf_varent_t's and |
367 | prepping the string table. */ | |
47d546f4 NA |
368 | |
369 | dvarents = (ctf_varent_t *) t; | |
370 | for (i = 0, dvd = ctf_list_next (&fp->ctf_dvdefs); dvd != NULL; | |
371 | dvd = ctf_list_next (dvd), i++) | |
372 | { | |
373 | ctf_varent_t *var = &dvarents[i]; | |
47d546f4 | 374 | |
f5e9c9bd | 375 | ctf_str_add_ref (fp, dvd->dvd_name, &var->ctv_name); |
9943fa3a | 376 | var->ctv_type = (uint32_t) dvd->dvd_type; |
47d546f4 NA |
377 | } |
378 | assert (i == nvars); | |
379 | ||
47d546f4 NA |
380 | t += sizeof (ctf_varent_t) * nvars; |
381 | ||
382 | assert (t == (unsigned char *) buf + sizeof (ctf_header_t) + hdr.cth_typeoff); | |
383 | ||
f5e9c9bd NA |
384 | /* We now take a final lap through the dynamic type definition list and copy |
385 | the appropriate type records to the output buffer, noting down the | |
386 | strings as we go. */ | |
47d546f4 NA |
387 | |
388 | for (dtd = ctf_list_next (&fp->ctf_dtdefs); | |
389 | dtd != NULL; dtd = ctf_list_next (dtd)) | |
390 | { | |
47d546f4 NA |
391 | uint32_t kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); |
392 | uint32_t vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info); | |
393 | ||
394 | ctf_array_t cta; | |
395 | uint32_t encoding; | |
396 | size_t len; | |
f5e9c9bd | 397 | ctf_stype_t *copied; |
676c3ecb | 398 | const char *name; |
47d546f4 NA |
399 | |
400 | if (dtd->dtd_data.ctt_size != CTF_LSIZE_SENT) | |
401 | len = sizeof (ctf_stype_t); | |
402 | else | |
403 | len = sizeof (ctf_type_t); | |
404 | ||
405 | memcpy (t, &dtd->dtd_data, len); | |
f5e9c9bd | 406 | copied = (ctf_stype_t *) t; /* name is at the start: constant offset. */ |
676c3ecb NA |
407 | if (copied->ctt_name |
408 | && (name = ctf_strraw (fp, copied->ctt_name)) != NULL) | |
409 | ctf_str_add_ref (fp, name, &copied->ctt_name); | |
47d546f4 NA |
410 | t += len; |
411 | ||
412 | switch (kind) | |
413 | { | |
414 | case CTF_K_INTEGER: | |
415 | case CTF_K_FLOAT: | |
416 | if (kind == CTF_K_INTEGER) | |
417 | { | |
418 | encoding = CTF_INT_DATA (dtd->dtd_u.dtu_enc.cte_format, | |
419 | dtd->dtd_u.dtu_enc.cte_offset, | |
420 | dtd->dtd_u.dtu_enc.cte_bits); | |
421 | } | |
422 | else | |
423 | { | |
424 | encoding = CTF_FP_DATA (dtd->dtd_u.dtu_enc.cte_format, | |
425 | dtd->dtd_u.dtu_enc.cte_offset, | |
426 | dtd->dtd_u.dtu_enc.cte_bits); | |
427 | } | |
428 | memcpy (t, &encoding, sizeof (encoding)); | |
429 | t += sizeof (encoding); | |
430 | break; | |
431 | ||
432 | case CTF_K_SLICE: | |
433 | memcpy (t, &dtd->dtd_u.dtu_slice, sizeof (struct ctf_slice)); | |
434 | t += sizeof (struct ctf_slice); | |
435 | break; | |
436 | ||
437 | case CTF_K_ARRAY: | |
438 | cta.cta_contents = (uint32_t) dtd->dtd_u.dtu_arr.ctr_contents; | |
439 | cta.cta_index = (uint32_t) dtd->dtd_u.dtu_arr.ctr_index; | |
440 | cta.cta_nelems = dtd->dtd_u.dtu_arr.ctr_nelems; | |
441 | memcpy (t, &cta, sizeof (cta)); | |
442 | t += sizeof (cta); | |
443 | break; | |
444 | ||
445 | case CTF_K_FUNCTION: | |
446 | { | |
447 | uint32_t *argv = (uint32_t *) (uintptr_t) t; | |
448 | uint32_t argc; | |
449 | ||
450 | for (argc = 0; argc < vlen; argc++) | |
afd78bd6 | 451 | *argv++ = dtd->dtd_u.dtu_argv[argc]; |
47d546f4 NA |
452 | |
453 | if (vlen & 1) | |
454 | *argv++ = 0; /* Pad to 4-byte boundary. */ | |
455 | ||
456 | t = (unsigned char *) argv; | |
457 | break; | |
458 | } | |
459 | ||
460 | case CTF_K_STRUCT: | |
461 | case CTF_K_UNION: | |
462 | if (dtd->dtd_data.ctt_size < CTF_LSTRUCT_THRESH) | |
f5e9c9bd | 463 | t = ctf_copy_smembers (fp, dtd, t); |
47d546f4 | 464 | else |
f5e9c9bd | 465 | t = ctf_copy_lmembers (fp, dtd, t); |
47d546f4 NA |
466 | break; |
467 | ||
468 | case CTF_K_ENUM: | |
f5e9c9bd | 469 | t = ctf_copy_emembers (fp, dtd, t); |
47d546f4 NA |
470 | break; |
471 | } | |
472 | } | |
473 | assert (t == (unsigned char *) buf + sizeof (ctf_header_t) + hdr.cth_stroff); | |
474 | ||
f5e9c9bd NA |
475 | /* Construct the final string table and fill out all the string refs with the |
476 | final offsets. Then purge the refs list, because we're about to move this | |
477 | strtab onto the end of the buf, invalidating all the offsets. */ | |
478 | strtab = ctf_str_write_strtab (fp); | |
479 | ctf_str_purge_refs (fp); | |
480 | ||
d851ecd3 NA |
481 | if (strtab.cts_strs == NULL) |
482 | { | |
de07e349 | 483 | free (buf); |
d851ecd3 NA |
484 | return (ctf_set_errno (fp, EAGAIN)); |
485 | } | |
486 | ||
f5e9c9bd NA |
487 | /* Now the string table is constructed, we can sort the buffer of |
488 | ctf_varent_t's. */ | |
d851ecd3 | 489 | ctf_sort_var_arg_cb_t sort_var_arg = { fp, (ctf_strs_t *) &strtab }; |
f5e9c9bd | 490 | ctf_qsort_r (dvarents, nvars, sizeof (ctf_varent_t), ctf_sort_var, |
d851ecd3 | 491 | &sort_var_arg); |
f5e9c9bd NA |
492 | |
493 | if ((newbuf = ctf_realloc (fp, buf, buf_size + strtab.cts_len)) == NULL) | |
494 | { | |
de07e349 NA |
495 | free (buf); |
496 | free (strtab.cts_strs); | |
f5e9c9bd NA |
497 | return (ctf_set_errno (fp, EAGAIN)); |
498 | } | |
499 | buf = newbuf; | |
500 | memcpy (buf + buf_size, strtab.cts_strs, strtab.cts_len); | |
501 | hdrp = (ctf_header_t *) buf; | |
502 | hdrp->cth_strlen = strtab.cts_len; | |
503 | buf_size += hdrp->cth_strlen; | |
de07e349 | 504 | free (strtab.cts_strs); |
f5e9c9bd | 505 | |
47d546f4 NA |
506 | /* Finally, we are ready to ctf_simple_open() the new container. If this |
507 | is successful, we then switch nfp and fp and free the old container. */ | |
508 | ||
d851ecd3 NA |
509 | if ((nfp = ctf_simple_open_internal ((char *) buf, buf_size, NULL, 0, |
510 | 0, NULL, 0, fp->ctf_syn_ext_strtab, | |
676c3ecb | 511 | 1, &err)) == NULL) |
47d546f4 | 512 | { |
de07e349 | 513 | free (buf); |
47d546f4 NA |
514 | return (ctf_set_errno (fp, err)); |
515 | } | |
516 | ||
517 | (void) ctf_setmodel (nfp, ctf_getmodel (fp)); | |
518 | (void) ctf_import (nfp, fp->ctf_parent); | |
519 | ||
520 | nfp->ctf_refcnt = fp->ctf_refcnt; | |
521 | nfp->ctf_flags |= fp->ctf_flags & ~LCTF_DIRTY; | |
fd55eae8 NA |
522 | if (nfp->ctf_dynbase == NULL) |
523 | nfp->ctf_dynbase = buf; /* Make sure buf is freed on close. */ | |
47d546f4 NA |
524 | nfp->ctf_dthash = fp->ctf_dthash; |
525 | nfp->ctf_dtdefs = fp->ctf_dtdefs; | |
47d546f4 NA |
526 | nfp->ctf_dvhash = fp->ctf_dvhash; |
527 | nfp->ctf_dvdefs = fp->ctf_dvdefs; | |
676c3ecb | 528 | nfp->ctf_dtoldid = fp->ctf_dtoldid; |
99dc3ebd | 529 | nfp->ctf_add_processing = fp->ctf_add_processing; |
47d546f4 NA |
530 | nfp->ctf_snapshots = fp->ctf_snapshots + 1; |
531 | nfp->ctf_specific = fp->ctf_specific; | |
676c3ecb NA |
532 | nfp->ctf_ptrtab = fp->ctf_ptrtab; |
533 | nfp->ctf_ptrtab_len = fp->ctf_ptrtab_len; | |
72c83edd NA |
534 | nfp->ctf_link_inputs = fp->ctf_link_inputs; |
535 | nfp->ctf_link_outputs = fp->ctf_link_outputs; | |
676c3ecb | 536 | nfp->ctf_str_prov_offset = fp->ctf_str_prov_offset; |
d851ecd3 | 537 | nfp->ctf_syn_ext_strtab = fp->ctf_syn_ext_strtab; |
49ea9b45 | 538 | nfp->ctf_link_cu_mapping = fp->ctf_link_cu_mapping; |
886453cb | 539 | nfp->ctf_link_type_mapping = fp->ctf_link_type_mapping; |
49ea9b45 NA |
540 | nfp->ctf_link_memb_name_changer = fp->ctf_link_memb_name_changer; |
541 | nfp->ctf_link_memb_name_changer_arg = fp->ctf_link_memb_name_changer_arg; | |
47d546f4 NA |
542 | |
543 | nfp->ctf_snapshot_lu = fp->ctf_snapshots; | |
544 | ||
676c3ecb NA |
545 | memcpy (&nfp->ctf_lookups, fp->ctf_lookups, sizeof (fp->ctf_lookups)); |
546 | nfp->ctf_structs = fp->ctf_structs; | |
547 | nfp->ctf_unions = fp->ctf_unions; | |
548 | nfp->ctf_enums = fp->ctf_enums; | |
549 | nfp->ctf_names = fp->ctf_names; | |
550 | ||
47d546f4 | 551 | fp->ctf_dthash = NULL; |
f5e9c9bd NA |
552 | ctf_str_free_atoms (nfp); |
553 | nfp->ctf_str_atoms = fp->ctf_str_atoms; | |
676c3ecb | 554 | nfp->ctf_prov_strtab = fp->ctf_prov_strtab; |
f5e9c9bd | 555 | fp->ctf_str_atoms = NULL; |
676c3ecb | 556 | fp->ctf_prov_strtab = NULL; |
47d546f4 | 557 | memset (&fp->ctf_dtdefs, 0, sizeof (ctf_list_t)); |
99dc3ebd | 558 | fp->ctf_add_processing = NULL; |
676c3ecb | 559 | fp->ctf_ptrtab = NULL; |
72c83edd NA |
560 | fp->ctf_link_inputs = NULL; |
561 | fp->ctf_link_outputs = NULL; | |
d851ecd3 | 562 | fp->ctf_syn_ext_strtab = NULL; |
49ea9b45 | 563 | fp->ctf_link_cu_mapping = NULL; |
886453cb | 564 | fp->ctf_link_type_mapping = NULL; |
47d546f4 NA |
565 | |
566 | fp->ctf_dvhash = NULL; | |
567 | memset (&fp->ctf_dvdefs, 0, sizeof (ctf_list_t)); | |
676c3ecb NA |
568 | memset (fp->ctf_lookups, 0, sizeof (fp->ctf_lookups)); |
569 | fp->ctf_structs.ctn_writable = NULL; | |
570 | fp->ctf_unions.ctn_writable = NULL; | |
571 | fp->ctf_enums.ctn_writable = NULL; | |
572 | fp->ctf_names.ctn_writable = NULL; | |
47d546f4 NA |
573 | |
574 | memcpy (&ofp, fp, sizeof (ctf_file_t)); | |
575 | memcpy (fp, nfp, sizeof (ctf_file_t)); | |
576 | memcpy (nfp, &ofp, sizeof (ctf_file_t)); | |
577 | ||
47d546f4 NA |
578 | nfp->ctf_refcnt = 1; /* Force nfp to be freed. */ |
579 | ctf_file_close (nfp); | |
580 | ||
581 | return 0; | |
582 | } | |
583 | ||
676c3ecb NA |
584 | ctf_names_t * |
585 | ctf_name_table (ctf_file_t *fp, int kind) | |
47d546f4 | 586 | { |
47d546f4 NA |
587 | switch (kind) |
588 | { | |
589 | case CTF_K_STRUCT: | |
676c3ecb | 590 | return &fp->ctf_structs; |
47d546f4 | 591 | case CTF_K_UNION: |
676c3ecb | 592 | return &fp->ctf_unions; |
47d546f4 | 593 | case CTF_K_ENUM: |
676c3ecb | 594 | return &fp->ctf_enums; |
47d546f4 | 595 | default: |
676c3ecb | 596 | return &fp->ctf_names; |
47d546f4 | 597 | } |
47d546f4 NA |
598 | } |
599 | ||
24865428 | 600 | int |
fe4c2d55 | 601 | ctf_dtd_insert (ctf_file_t *fp, ctf_dtdef_t *dtd, int flag, int kind) |
47d546f4 | 602 | { |
676c3ecb | 603 | const char *name; |
24865428 NA |
604 | if (ctf_dynhash_insert (fp->ctf_dthash, (void *) dtd->dtd_type, dtd) < 0) |
605 | return -1; | |
606 | ||
fe4c2d55 | 607 | if (flag == CTF_ADD_ROOT && dtd->dtd_data.ctt_name |
676c3ecb | 608 | && (name = ctf_strraw (fp, dtd->dtd_data.ctt_name)) != NULL) |
47d546f4 | 609 | { |
676c3ecb NA |
610 | if (ctf_dynhash_insert (ctf_name_table (fp, kind)->ctn_writable, |
611 | (char *) name, (void *) dtd->dtd_type) < 0) | |
612 | { | |
613 | ctf_dynhash_remove (fp->ctf_dthash, (void *) dtd->dtd_type); | |
614 | return -1; | |
615 | } | |
47d546f4 | 616 | } |
24865428 NA |
617 | ctf_list_append (&fp->ctf_dtdefs, dtd); |
618 | return 0; | |
47d546f4 NA |
619 | } |
620 | ||
621 | void | |
622 | ctf_dtd_delete (ctf_file_t *fp, ctf_dtdef_t *dtd) | |
623 | { | |
624 | ctf_dmdef_t *dmd, *nmd; | |
625 | int kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); | |
8ffcdf18 | 626 | int name_kind = kind; |
676c3ecb | 627 | const char *name; |
47d546f4 NA |
628 | |
629 | ctf_dynhash_remove (fp->ctf_dthash, (void *) dtd->dtd_type); | |
630 | ||
631 | switch (kind) | |
632 | { | |
633 | case CTF_K_STRUCT: | |
634 | case CTF_K_UNION: | |
635 | case CTF_K_ENUM: | |
636 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
637 | dmd != NULL; dmd = nmd) | |
638 | { | |
639 | if (dmd->dmd_name != NULL) | |
de07e349 | 640 | free (dmd->dmd_name); |
47d546f4 | 641 | nmd = ctf_list_next (dmd); |
de07e349 | 642 | free (dmd); |
47d546f4 NA |
643 | } |
644 | break; | |
645 | case CTF_K_FUNCTION: | |
de07e349 | 646 | free (dtd->dtd_u.dtu_argv); |
47d546f4 | 647 | break; |
8ffcdf18 NA |
648 | case CTF_K_FORWARD: |
649 | name_kind = dtd->dtd_data.ctt_type; | |
650 | break; | |
47d546f4 NA |
651 | } |
652 | ||
676c3ecb | 653 | if (dtd->dtd_data.ctt_name |
fe4c2d55 NA |
654 | && (name = ctf_strraw (fp, dtd->dtd_data.ctt_name)) != NULL |
655 | && LCTF_INFO_ISROOT (fp, dtd->dtd_data.ctt_info)) | |
47d546f4 | 656 | { |
8ffcdf18 | 657 | ctf_dynhash_remove (ctf_name_table (fp, name_kind)->ctn_writable, |
676c3ecb NA |
658 | name); |
659 | ctf_str_remove_ref (fp, name, &dtd->dtd_data.ctt_name); | |
47d546f4 NA |
660 | } |
661 | ||
662 | ctf_list_delete (&fp->ctf_dtdefs, dtd); | |
de07e349 | 663 | free (dtd); |
47d546f4 NA |
664 | } |
665 | ||
666 | ctf_dtdef_t * | |
667 | ctf_dtd_lookup (const ctf_file_t *fp, ctf_id_t type) | |
668 | { | |
669 | return (ctf_dtdef_t *) ctf_dynhash_lookup (fp->ctf_dthash, (void *) type); | |
670 | } | |
671 | ||
47d546f4 NA |
672 | ctf_dtdef_t * |
673 | ctf_dynamic_type (const ctf_file_t *fp, ctf_id_t id) | |
674 | { | |
675 | ctf_id_t idx; | |
676 | ||
676c3ecb NA |
677 | if (!(fp->ctf_flags & LCTF_RDWR)) |
678 | return NULL; | |
679 | ||
47d546f4 NA |
680 | if ((fp->ctf_flags & LCTF_CHILD) && LCTF_TYPE_ISPARENT (fp, id)) |
681 | fp = fp->ctf_parent; | |
682 | ||
683 | idx = LCTF_TYPE_TO_INDEX(fp, id); | |
684 | ||
676c3ecb | 685 | if ((unsigned long) idx <= fp->ctf_typemax) |
47d546f4 NA |
686 | return ctf_dtd_lookup (fp, id); |
687 | return NULL; | |
688 | } | |
689 | ||
24865428 | 690 | int |
47d546f4 NA |
691 | ctf_dvd_insert (ctf_file_t *fp, ctf_dvdef_t *dvd) |
692 | { | |
24865428 NA |
693 | if (ctf_dynhash_insert (fp->ctf_dvhash, dvd->dvd_name, dvd) < 0) |
694 | return -1; | |
47d546f4 | 695 | ctf_list_append (&fp->ctf_dvdefs, dvd); |
24865428 | 696 | return 0; |
47d546f4 NA |
697 | } |
698 | ||
699 | void | |
700 | ctf_dvd_delete (ctf_file_t *fp, ctf_dvdef_t *dvd) | |
701 | { | |
702 | ctf_dynhash_remove (fp->ctf_dvhash, dvd->dvd_name); | |
de07e349 | 703 | free (dvd->dvd_name); |
47d546f4 NA |
704 | |
705 | ctf_list_delete (&fp->ctf_dvdefs, dvd); | |
de07e349 | 706 | free (dvd); |
47d546f4 NA |
707 | } |
708 | ||
709 | ctf_dvdef_t * | |
710 | ctf_dvd_lookup (const ctf_file_t *fp, const char *name) | |
711 | { | |
712 | return (ctf_dvdef_t *) ctf_dynhash_lookup (fp->ctf_dvhash, name); | |
713 | } | |
714 | ||
715 | /* Discard all of the dynamic type definitions and variable definitions that | |
716 | have been added to the container since the last call to ctf_update(). We | |
717 | locate such types by scanning the dtd list and deleting elements that have | |
718 | type IDs greater than ctf_dtoldid, which is set by ctf_update(), above, and | |
719 | by scanning the variable list and deleting elements that have update IDs | |
720 | equal to the current value of the last-update snapshot count (indicating that | |
721 | they were added after the most recent call to ctf_update()). */ | |
722 | int | |
723 | ctf_discard (ctf_file_t *fp) | |
724 | { | |
725 | ctf_snapshot_id_t last_update = | |
726 | { fp->ctf_dtoldid, | |
727 | fp->ctf_snapshot_lu + 1 }; | |
728 | ||
729 | /* Update required? */ | |
730 | if (!(fp->ctf_flags & LCTF_DIRTY)) | |
731 | return 0; | |
732 | ||
733 | return (ctf_rollback (fp, last_update)); | |
734 | } | |
735 | ||
736 | ctf_snapshot_id_t | |
737 | ctf_snapshot (ctf_file_t *fp) | |
738 | { | |
739 | ctf_snapshot_id_t snapid; | |
676c3ecb | 740 | snapid.dtd_id = fp->ctf_typemax; |
47d546f4 NA |
741 | snapid.snapshot_id = fp->ctf_snapshots++; |
742 | return snapid; | |
743 | } | |
744 | ||
745 | /* Like ctf_discard(), only discards everything after a particular ID. */ | |
746 | int | |
747 | ctf_rollback (ctf_file_t *fp, ctf_snapshot_id_t id) | |
748 | { | |
749 | ctf_dtdef_t *dtd, *ntd; | |
750 | ctf_dvdef_t *dvd, *nvd; | |
751 | ||
752 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
753 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
754 | ||
47d546f4 NA |
755 | if (fp->ctf_snapshot_lu >= id.snapshot_id) |
756 | return (ctf_set_errno (fp, ECTF_OVERROLLBACK)); | |
757 | ||
758 | for (dtd = ctf_list_next (&fp->ctf_dtdefs); dtd != NULL; dtd = ntd) | |
759 | { | |
676c3ecb NA |
760 | int kind; |
761 | const char *name; | |
762 | ||
47d546f4 NA |
763 | ntd = ctf_list_next (dtd); |
764 | ||
765 | if (LCTF_TYPE_TO_INDEX (fp, dtd->dtd_type) <= id.dtd_id) | |
766 | continue; | |
767 | ||
676c3ecb | 768 | kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); |
8ffcdf18 NA |
769 | if (kind == CTF_K_FORWARD) |
770 | kind = dtd->dtd_data.ctt_type; | |
676c3ecb NA |
771 | |
772 | if (dtd->dtd_data.ctt_name | |
fe4c2d55 NA |
773 | && (name = ctf_strraw (fp, dtd->dtd_data.ctt_name)) != NULL |
774 | && LCTF_INFO_ISROOT (fp, dtd->dtd_data.ctt_info)) | |
676c3ecb NA |
775 | { |
776 | ctf_dynhash_remove (ctf_name_table (fp, kind)->ctn_writable, | |
777 | name); | |
778 | ctf_str_remove_ref (fp, name, &dtd->dtd_data.ctt_name); | |
779 | } | |
780 | ||
781 | ctf_dynhash_remove (fp->ctf_dthash, (void *) dtd->dtd_type); | |
47d546f4 NA |
782 | ctf_dtd_delete (fp, dtd); |
783 | } | |
784 | ||
785 | for (dvd = ctf_list_next (&fp->ctf_dvdefs); dvd != NULL; dvd = nvd) | |
786 | { | |
787 | nvd = ctf_list_next (dvd); | |
788 | ||
789 | if (dvd->dvd_snapshots <= id.snapshot_id) | |
790 | continue; | |
791 | ||
792 | ctf_dvd_delete (fp, dvd); | |
793 | } | |
794 | ||
676c3ecb | 795 | fp->ctf_typemax = id.dtd_id; |
47d546f4 NA |
796 | fp->ctf_snapshots = id.snapshot_id; |
797 | ||
798 | if (fp->ctf_snapshots == fp->ctf_snapshot_lu) | |
799 | fp->ctf_flags &= ~LCTF_DIRTY; | |
800 | ||
801 | return 0; | |
802 | } | |
803 | ||
804 | static ctf_id_t | |
676c3ecb | 805 | ctf_add_generic (ctf_file_t *fp, uint32_t flag, const char *name, int kind, |
47d546f4 NA |
806 | ctf_dtdef_t **rp) |
807 | { | |
808 | ctf_dtdef_t *dtd; | |
809 | ctf_id_t type; | |
47d546f4 NA |
810 | |
811 | if (flag != CTF_ADD_NONROOT && flag != CTF_ADD_ROOT) | |
812 | return (ctf_set_errno (fp, EINVAL)); | |
813 | ||
814 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
815 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
816 | ||
676c3ecb | 817 | if (LCTF_INDEX_TO_TYPE (fp, fp->ctf_typemax, 1) >= CTF_MAX_TYPE) |
47d546f4 NA |
818 | return (ctf_set_errno (fp, ECTF_FULL)); |
819 | ||
676c3ecb | 820 | if (LCTF_INDEX_TO_TYPE (fp, fp->ctf_typemax, 1) == (CTF_MAX_PTYPE - 1)) |
47d546f4 NA |
821 | return (ctf_set_errno (fp, ECTF_FULL)); |
822 | ||
676c3ecb NA |
823 | /* Make sure ptrtab always grows to be big enough for all types. */ |
824 | if (ctf_grow_ptrtab (fp) < 0) | |
825 | return CTF_ERR; /* errno is set for us. */ | |
826 | ||
de07e349 | 827 | if ((dtd = malloc (sizeof (ctf_dtdef_t))) == NULL) |
47d546f4 NA |
828 | return (ctf_set_errno (fp, EAGAIN)); |
829 | ||
676c3ecb | 830 | type = ++fp->ctf_typemax; |
47d546f4 NA |
831 | type = LCTF_INDEX_TO_TYPE (fp, type, (fp->ctf_flags & LCTF_CHILD)); |
832 | ||
833 | memset (dtd, 0, sizeof (ctf_dtdef_t)); | |
676c3ecb | 834 | dtd->dtd_data.ctt_name = ctf_str_add_ref (fp, name, &dtd->dtd_data.ctt_name); |
47d546f4 NA |
835 | dtd->dtd_type = type; |
836 | ||
676c3ecb NA |
837 | if (dtd->dtd_data.ctt_name == 0 && name != NULL && name[0] != '\0') |
838 | { | |
de07e349 | 839 | free (dtd); |
676c3ecb NA |
840 | return (ctf_set_errno (fp, EAGAIN)); |
841 | } | |
842 | ||
fe4c2d55 | 843 | if (ctf_dtd_insert (fp, dtd, flag, kind) < 0) |
24865428 | 844 | { |
de07e349 | 845 | free (dtd); |
24865428 NA |
846 | return CTF_ERR; /* errno is set for us. */ |
847 | } | |
47d546f4 NA |
848 | fp->ctf_flags |= LCTF_DIRTY; |
849 | ||
850 | *rp = dtd; | |
851 | return type; | |
852 | } | |
853 | ||
854 | /* When encoding integer sizes, we want to convert a byte count in the range | |
855 | 1-8 to the closest power of 2 (e.g. 3->4, 5->8, etc). The clp2() function | |
856 | is a clever implementation from "Hacker's Delight" by Henry Warren, Jr. */ | |
857 | static size_t | |
858 | clp2 (size_t x) | |
859 | { | |
860 | x--; | |
861 | ||
862 | x |= (x >> 1); | |
863 | x |= (x >> 2); | |
864 | x |= (x >> 4); | |
865 | x |= (x >> 8); | |
866 | x |= (x >> 16); | |
867 | ||
868 | return (x + 1); | |
869 | } | |
870 | ||
871 | static ctf_id_t | |
872 | ctf_add_encoded (ctf_file_t *fp, uint32_t flag, | |
873 | const char *name, const ctf_encoding_t *ep, uint32_t kind) | |
874 | { | |
875 | ctf_dtdef_t *dtd; | |
876 | ctf_id_t type; | |
877 | ||
878 | if (ep == NULL) | |
879 | return (ctf_set_errno (fp, EINVAL)); | |
880 | ||
676c3ecb | 881 | if ((type = ctf_add_generic (fp, flag, name, kind, &dtd)) == CTF_ERR) |
47d546f4 NA |
882 | return CTF_ERR; /* errno is set for us. */ |
883 | ||
884 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, flag, 0); | |
76fad999 TT |
885 | dtd->dtd_data.ctt_size = clp2 (P2ROUNDUP (ep->cte_bits, CHAR_BIT) |
886 | / CHAR_BIT); | |
47d546f4 NA |
887 | dtd->dtd_u.dtu_enc = *ep; |
888 | ||
889 | return type; | |
890 | } | |
891 | ||
892 | static ctf_id_t | |
893 | ctf_add_reftype (ctf_file_t *fp, uint32_t flag, ctf_id_t ref, uint32_t kind) | |
894 | { | |
895 | ctf_dtdef_t *dtd; | |
896 | ctf_id_t type; | |
897 | ctf_file_t *tmp = fp; | |
676c3ecb | 898 | int child = fp->ctf_flags & LCTF_CHILD; |
47d546f4 | 899 | |
a0486bac | 900 | if (ref == CTF_ERR || ref > CTF_MAX_TYPE) |
47d546f4 NA |
901 | return (ctf_set_errno (fp, EINVAL)); |
902 | ||
2361f1c8 | 903 | if (ref != 0 && ctf_lookup_by_id (&tmp, ref) == NULL) |
47d546f4 NA |
904 | return CTF_ERR; /* errno is set for us. */ |
905 | ||
676c3ecb | 906 | if ((type = ctf_add_generic (fp, flag, NULL, kind, &dtd)) == CTF_ERR) |
47d546f4 NA |
907 | return CTF_ERR; /* errno is set for us. */ |
908 | ||
909 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, flag, 0); | |
910 | dtd->dtd_data.ctt_type = (uint32_t) ref; | |
911 | ||
676c3ecb NA |
912 | if (kind != CTF_K_POINTER) |
913 | return type; | |
914 | ||
915 | /* If we are adding a pointer, update the ptrtab, both the directly pointed-to | |
916 | type and (if an anonymous typedef node is being pointed at) the type that | |
917 | points at too. Note that ctf_typemax is at this point one higher than we | |
918 | want to check against, because it's just been incremented for the addition | |
919 | of this type. */ | |
920 | ||
921 | uint32_t type_idx = LCTF_TYPE_TO_INDEX (fp, type); | |
922 | uint32_t ref_idx = LCTF_TYPE_TO_INDEX (fp, ref); | |
923 | ||
924 | if (LCTF_TYPE_ISCHILD (fp, ref) == child | |
925 | && ref_idx < fp->ctf_typemax) | |
926 | { | |
927 | fp->ctf_ptrtab[ref_idx] = type_idx; | |
928 | ||
929 | ctf_id_t refref_idx = LCTF_TYPE_TO_INDEX (fp, dtd->dtd_data.ctt_type); | |
930 | ||
931 | if (tmp == fp | |
932 | && (LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info) == CTF_K_TYPEDEF) | |
933 | && strcmp (ctf_strptr (fp, dtd->dtd_data.ctt_name), "") == 0 | |
934 | && refref_idx < fp->ctf_typemax) | |
935 | fp->ctf_ptrtab[refref_idx] = type_idx; | |
936 | } | |
937 | ||
47d546f4 NA |
938 | return type; |
939 | } | |
940 | ||
941 | ctf_id_t | |
942 | ctf_add_slice (ctf_file_t *fp, uint32_t flag, ctf_id_t ref, | |
943 | const ctf_encoding_t *ep) | |
944 | { | |
945 | ctf_dtdef_t *dtd; | |
946 | ctf_id_t type; | |
947 | int kind; | |
948 | const ctf_type_t *tp; | |
949 | ctf_file_t *tmp = fp; | |
950 | ||
951 | if (ep == NULL) | |
952 | return (ctf_set_errno (fp, EINVAL)); | |
953 | ||
954 | if ((ep->cte_bits > 255) || (ep->cte_offset > 255)) | |
955 | return (ctf_set_errno (fp, ECTF_SLICEOVERFLOW)); | |
956 | ||
a0486bac | 957 | if (ref == CTF_ERR || ref > CTF_MAX_TYPE) |
47d546f4 NA |
958 | return (ctf_set_errno (fp, EINVAL)); |
959 | ||
2361f1c8 | 960 | if (ref != 0 && ((tp = ctf_lookup_by_id (&tmp, ref)) == NULL)) |
47d546f4 NA |
961 | return CTF_ERR; /* errno is set for us. */ |
962 | ||
963 | kind = ctf_type_kind_unsliced (tmp, ref); | |
964 | if ((kind != CTF_K_INTEGER) && (kind != CTF_K_FLOAT) && | |
2361f1c8 NA |
965 | (kind != CTF_K_ENUM) |
966 | && (ref != 0)) | |
47d546f4 NA |
967 | return (ctf_set_errno (fp, ECTF_NOTINTFP)); |
968 | ||
676c3ecb | 969 | if ((type = ctf_add_generic (fp, flag, NULL, CTF_K_SLICE, &dtd)) == CTF_ERR) |
47d546f4 NA |
970 | return CTF_ERR; /* errno is set for us. */ |
971 | ||
972 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_SLICE, flag, 0); | |
76fad999 TT |
973 | dtd->dtd_data.ctt_size = clp2 (P2ROUNDUP (ep->cte_bits, CHAR_BIT) |
974 | / CHAR_BIT); | |
9943fa3a | 975 | dtd->dtd_u.dtu_slice.cts_type = (uint32_t) ref; |
47d546f4 NA |
976 | dtd->dtd_u.dtu_slice.cts_bits = ep->cte_bits; |
977 | dtd->dtd_u.dtu_slice.cts_offset = ep->cte_offset; | |
978 | ||
979 | return type; | |
980 | } | |
981 | ||
982 | ctf_id_t | |
983 | ctf_add_integer (ctf_file_t *fp, uint32_t flag, | |
984 | const char *name, const ctf_encoding_t *ep) | |
985 | { | |
986 | return (ctf_add_encoded (fp, flag, name, ep, CTF_K_INTEGER)); | |
987 | } | |
988 | ||
989 | ctf_id_t | |
990 | ctf_add_float (ctf_file_t *fp, uint32_t flag, | |
991 | const char *name, const ctf_encoding_t *ep) | |
992 | { | |
993 | return (ctf_add_encoded (fp, flag, name, ep, CTF_K_FLOAT)); | |
994 | } | |
995 | ||
996 | ctf_id_t | |
997 | ctf_add_pointer (ctf_file_t *fp, uint32_t flag, ctf_id_t ref) | |
998 | { | |
999 | return (ctf_add_reftype (fp, flag, ref, CTF_K_POINTER)); | |
1000 | } | |
1001 | ||
1002 | ctf_id_t | |
1003 | ctf_add_array (ctf_file_t *fp, uint32_t flag, const ctf_arinfo_t *arp) | |
1004 | { | |
1005 | ctf_dtdef_t *dtd; | |
1006 | ctf_id_t type; | |
1007 | ctf_file_t *tmp = fp; | |
1008 | ||
1009 | if (arp == NULL) | |
1010 | return (ctf_set_errno (fp, EINVAL)); | |
1011 | ||
2361f1c8 NA |
1012 | if (arp->ctr_contents != 0 |
1013 | && ctf_lookup_by_id (&tmp, arp->ctr_contents) == NULL) | |
47d546f4 NA |
1014 | return CTF_ERR; /* errno is set for us. */ |
1015 | ||
1016 | tmp = fp; | |
1017 | if (ctf_lookup_by_id (&tmp, arp->ctr_index) == NULL) | |
1018 | return CTF_ERR; /* errno is set for us. */ | |
1019 | ||
676c3ecb | 1020 | if ((type = ctf_add_generic (fp, flag, NULL, CTF_K_ARRAY, &dtd)) == CTF_ERR) |
47d546f4 NA |
1021 | return CTF_ERR; /* errno is set for us. */ |
1022 | ||
1023 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_ARRAY, flag, 0); | |
1024 | dtd->dtd_data.ctt_size = 0; | |
1025 | dtd->dtd_u.dtu_arr = *arp; | |
1026 | ||
1027 | return type; | |
1028 | } | |
1029 | ||
1030 | int | |
1031 | ctf_set_array (ctf_file_t *fp, ctf_id_t type, const ctf_arinfo_t *arp) | |
1032 | { | |
1033 | ctf_dtdef_t *dtd = ctf_dtd_lookup (fp, type); | |
1034 | ||
1035 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
1036 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
1037 | ||
1038 | if (dtd == NULL | |
1039 | || LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info) != CTF_K_ARRAY) | |
1040 | return (ctf_set_errno (fp, ECTF_BADID)); | |
1041 | ||
1042 | fp->ctf_flags |= LCTF_DIRTY; | |
1043 | dtd->dtd_u.dtu_arr = *arp; | |
1044 | ||
1045 | return 0; | |
1046 | } | |
1047 | ||
1048 | ctf_id_t | |
1049 | ctf_add_function (ctf_file_t *fp, uint32_t flag, | |
1050 | const ctf_funcinfo_t *ctc, const ctf_id_t *argv) | |
1051 | { | |
1052 | ctf_dtdef_t *dtd; | |
1053 | ctf_id_t type; | |
1054 | uint32_t vlen; | |
afd78bd6 | 1055 | uint32_t *vdat = NULL; |
47d546f4 NA |
1056 | ctf_file_t *tmp = fp; |
1057 | size_t i; | |
1058 | ||
1059 | if (ctc == NULL || (ctc->ctc_flags & ~CTF_FUNC_VARARG) != 0 | |
1060 | || (ctc->ctc_argc != 0 && argv == NULL)) | |
1061 | return (ctf_set_errno (fp, EINVAL)); | |
1062 | ||
1063 | vlen = ctc->ctc_argc; | |
1064 | if (ctc->ctc_flags & CTF_FUNC_VARARG) | |
1065 | vlen++; /* Add trailing zero to indicate varargs (see below). */ | |
1066 | ||
2361f1c8 NA |
1067 | if (ctc->ctc_return != 0 |
1068 | && ctf_lookup_by_id (&tmp, ctc->ctc_return) == NULL) | |
47d546f4 NA |
1069 | return CTF_ERR; /* errno is set for us. */ |
1070 | ||
47d546f4 NA |
1071 | if (vlen > CTF_MAX_VLEN) |
1072 | return (ctf_set_errno (fp, EOVERFLOW)); | |
1073 | ||
de07e349 | 1074 | if (vlen != 0 && (vdat = malloc (sizeof (ctf_id_t) * vlen)) == NULL) |
47d546f4 NA |
1075 | return (ctf_set_errno (fp, EAGAIN)); |
1076 | ||
afd78bd6 NA |
1077 | for (i = 0; i < ctc->ctc_argc; i++) |
1078 | { | |
1079 | tmp = fp; | |
1080 | if (argv[i] != 0 && ctf_lookup_by_id (&tmp, argv[i]) == NULL) | |
1081 | { | |
1082 | free (vdat); | |
1083 | return CTF_ERR; /* errno is set for us. */ | |
1084 | } | |
1085 | vdat[i] = (uint32_t) argv[i]; | |
1086 | } | |
1087 | ||
676c3ecb NA |
1088 | if ((type = ctf_add_generic (fp, flag, NULL, CTF_K_FUNCTION, |
1089 | &dtd)) == CTF_ERR) | |
47d546f4 | 1090 | { |
de07e349 | 1091 | free (vdat); |
47d546f4 NA |
1092 | return CTF_ERR; /* errno is set for us. */ |
1093 | } | |
1094 | ||
1095 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_FUNCTION, flag, vlen); | |
1096 | dtd->dtd_data.ctt_type = (uint32_t) ctc->ctc_return; | |
1097 | ||
47d546f4 NA |
1098 | if (ctc->ctc_flags & CTF_FUNC_VARARG) |
1099 | vdat[vlen - 1] = 0; /* Add trailing zero to indicate varargs. */ | |
1100 | dtd->dtd_u.dtu_argv = vdat; | |
1101 | ||
1102 | return type; | |
1103 | } | |
1104 | ||
1105 | ctf_id_t | |
1106 | ctf_add_struct_sized (ctf_file_t *fp, uint32_t flag, const char *name, | |
1107 | size_t size) | |
1108 | { | |
47d546f4 NA |
1109 | ctf_dtdef_t *dtd; |
1110 | ctf_id_t type = 0; | |
1111 | ||
fe4c2d55 | 1112 | /* Promote root-visible forwards to structs. */ |
47d546f4 | 1113 | if (name != NULL) |
676c3ecb | 1114 | type = ctf_lookup_by_rawname (fp, CTF_K_STRUCT, name); |
47d546f4 NA |
1115 | |
1116 | if (type != 0 && ctf_type_kind (fp, type) == CTF_K_FORWARD) | |
1117 | dtd = ctf_dtd_lookup (fp, type); | |
676c3ecb NA |
1118 | else if ((type = ctf_add_generic (fp, flag, name, CTF_K_STRUCT, |
1119 | &dtd)) == CTF_ERR) | |
47d546f4 NA |
1120 | return CTF_ERR; /* errno is set for us. */ |
1121 | ||
1122 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_STRUCT, flag, 0); | |
1123 | ||
1124 | if (size > CTF_MAX_SIZE) | |
1125 | { | |
1126 | dtd->dtd_data.ctt_size = CTF_LSIZE_SENT; | |
1127 | dtd->dtd_data.ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI (size); | |
1128 | dtd->dtd_data.ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO (size); | |
1129 | } | |
1130 | else | |
1131 | dtd->dtd_data.ctt_size = (uint32_t) size; | |
1132 | ||
1133 | return type; | |
1134 | } | |
1135 | ||
1136 | ctf_id_t | |
1137 | ctf_add_struct (ctf_file_t *fp, uint32_t flag, const char *name) | |
1138 | { | |
1139 | return (ctf_add_struct_sized (fp, flag, name, 0)); | |
1140 | } | |
1141 | ||
1142 | ctf_id_t | |
1143 | ctf_add_union_sized (ctf_file_t *fp, uint32_t flag, const char *name, | |
1144 | size_t size) | |
1145 | { | |
47d546f4 NA |
1146 | ctf_dtdef_t *dtd; |
1147 | ctf_id_t type = 0; | |
1148 | ||
fe4c2d55 | 1149 | /* Promote root-visible forwards to unions. */ |
47d546f4 | 1150 | if (name != NULL) |
676c3ecb | 1151 | type = ctf_lookup_by_rawname (fp, CTF_K_UNION, name); |
47d546f4 NA |
1152 | |
1153 | if (type != 0 && ctf_type_kind (fp, type) == CTF_K_FORWARD) | |
1154 | dtd = ctf_dtd_lookup (fp, type); | |
676c3ecb NA |
1155 | else if ((type = ctf_add_generic (fp, flag, name, CTF_K_UNION, |
1156 | &dtd)) == CTF_ERR) | |
47d546f4 NA |
1157 | return CTF_ERR; /* errno is set for us */ |
1158 | ||
1159 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_UNION, flag, 0); | |
1160 | ||
1161 | if (size > CTF_MAX_SIZE) | |
1162 | { | |
1163 | dtd->dtd_data.ctt_size = CTF_LSIZE_SENT; | |
1164 | dtd->dtd_data.ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI (size); | |
1165 | dtd->dtd_data.ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO (size); | |
1166 | } | |
1167 | else | |
1168 | dtd->dtd_data.ctt_size = (uint32_t) size; | |
1169 | ||
1170 | return type; | |
1171 | } | |
1172 | ||
1173 | ctf_id_t | |
1174 | ctf_add_union (ctf_file_t *fp, uint32_t flag, const char *name) | |
1175 | { | |
1176 | return (ctf_add_union_sized (fp, flag, name, 0)); | |
1177 | } | |
1178 | ||
1179 | ctf_id_t | |
1180 | ctf_add_enum (ctf_file_t *fp, uint32_t flag, const char *name) | |
1181 | { | |
47d546f4 NA |
1182 | ctf_dtdef_t *dtd; |
1183 | ctf_id_t type = 0; | |
1184 | ||
fe4c2d55 | 1185 | /* Promote root-visible forwards to enums. */ |
47d546f4 | 1186 | if (name != NULL) |
676c3ecb | 1187 | type = ctf_lookup_by_rawname (fp, CTF_K_ENUM, name); |
47d546f4 NA |
1188 | |
1189 | if (type != 0 && ctf_type_kind (fp, type) == CTF_K_FORWARD) | |
1190 | dtd = ctf_dtd_lookup (fp, type); | |
676c3ecb NA |
1191 | else if ((type = ctf_add_generic (fp, flag, name, CTF_K_ENUM, |
1192 | &dtd)) == CTF_ERR) | |
47d546f4 NA |
1193 | return CTF_ERR; /* errno is set for us. */ |
1194 | ||
1195 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_ENUM, flag, 0); | |
1196 | dtd->dtd_data.ctt_size = fp->ctf_dmodel->ctd_int; | |
1197 | ||
1198 | return type; | |
1199 | } | |
1200 | ||
1201 | ctf_id_t | |
1202 | ctf_add_enum_encoded (ctf_file_t *fp, uint32_t flag, const char *name, | |
1203 | const ctf_encoding_t *ep) | |
1204 | { | |
47d546f4 NA |
1205 | ctf_id_t type = 0; |
1206 | ||
1207 | /* First, create the enum if need be, using most of the same machinery as | |
1208 | ctf_add_enum(), to ensure that we do not allow things past that are not | |
1209 | enums or forwards to them. (This includes other slices: you cannot slice a | |
1210 | slice, which would be a useless thing to do anyway.) */ | |
1211 | ||
1212 | if (name != NULL) | |
676c3ecb | 1213 | type = ctf_lookup_by_rawname (fp, CTF_K_ENUM, name); |
47d546f4 NA |
1214 | |
1215 | if (type != 0) | |
1216 | { | |
1217 | if ((ctf_type_kind (fp, type) != CTF_K_FORWARD) && | |
1218 | (ctf_type_kind_unsliced (fp, type) != CTF_K_ENUM)) | |
1219 | return (ctf_set_errno (fp, ECTF_NOTINTFP)); | |
1220 | } | |
1221 | else if ((type = ctf_add_enum (fp, flag, name)) == CTF_ERR) | |
1222 | return CTF_ERR; /* errno is set for us. */ | |
1223 | ||
1224 | /* Now attach a suitable slice to it. */ | |
1225 | ||
1226 | return ctf_add_slice (fp, flag, type, ep); | |
1227 | } | |
1228 | ||
1229 | ctf_id_t | |
1230 | ctf_add_forward (ctf_file_t *fp, uint32_t flag, const char *name, | |
1231 | uint32_t kind) | |
1232 | { | |
47d546f4 NA |
1233 | ctf_dtdef_t *dtd; |
1234 | ctf_id_t type = 0; | |
1235 | ||
676c3ecb NA |
1236 | if (kind != CTF_K_STRUCT && kind != CTF_K_UNION && kind != CTF_K_ENUM) |
1237 | return (ctf_set_errno (fp, ECTF_NOTSUE)); | |
47d546f4 NA |
1238 | |
1239 | /* If the type is already defined or exists as a forward tag, just | |
1240 | return the ctf_id_t of the existing definition. */ | |
1241 | ||
1242 | if (name != NULL) | |
676c3ecb | 1243 | type = ctf_lookup_by_rawname (fp, kind, name); |
47d546f4 | 1244 | |
6bbf9da8 NA |
1245 | if (type) |
1246 | return type; | |
1247 | ||
8ffcdf18 | 1248 | if ((type = ctf_add_generic (fp, flag, name, kind, &dtd)) == CTF_ERR) |
47d546f4 NA |
1249 | return CTF_ERR; /* errno is set for us. */ |
1250 | ||
1251 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_FORWARD, flag, 0); | |
1252 | dtd->dtd_data.ctt_type = kind; | |
1253 | ||
1254 | return type; | |
1255 | } | |
1256 | ||
1257 | ctf_id_t | |
1258 | ctf_add_typedef (ctf_file_t *fp, uint32_t flag, const char *name, | |
1259 | ctf_id_t ref) | |
1260 | { | |
1261 | ctf_dtdef_t *dtd; | |
1262 | ctf_id_t type; | |
1263 | ctf_file_t *tmp = fp; | |
1264 | ||
a0486bac | 1265 | if (ref == CTF_ERR || ref > CTF_MAX_TYPE) |
47d546f4 NA |
1266 | return (ctf_set_errno (fp, EINVAL)); |
1267 | ||
2361f1c8 | 1268 | if (ref != 0 && ctf_lookup_by_id (&tmp, ref) == NULL) |
47d546f4 NA |
1269 | return CTF_ERR; /* errno is set for us. */ |
1270 | ||
676c3ecb NA |
1271 | if ((type = ctf_add_generic (fp, flag, name, CTF_K_TYPEDEF, |
1272 | &dtd)) == CTF_ERR) | |
47d546f4 NA |
1273 | return CTF_ERR; /* errno is set for us. */ |
1274 | ||
1275 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (CTF_K_TYPEDEF, flag, 0); | |
1276 | dtd->dtd_data.ctt_type = (uint32_t) ref; | |
1277 | ||
1278 | return type; | |
1279 | } | |
1280 | ||
1281 | ctf_id_t | |
1282 | ctf_add_volatile (ctf_file_t *fp, uint32_t flag, ctf_id_t ref) | |
1283 | { | |
1284 | return (ctf_add_reftype (fp, flag, ref, CTF_K_VOLATILE)); | |
1285 | } | |
1286 | ||
1287 | ctf_id_t | |
1288 | ctf_add_const (ctf_file_t *fp, uint32_t flag, ctf_id_t ref) | |
1289 | { | |
1290 | return (ctf_add_reftype (fp, flag, ref, CTF_K_CONST)); | |
1291 | } | |
1292 | ||
1293 | ctf_id_t | |
1294 | ctf_add_restrict (ctf_file_t *fp, uint32_t flag, ctf_id_t ref) | |
1295 | { | |
1296 | return (ctf_add_reftype (fp, flag, ref, CTF_K_RESTRICT)); | |
1297 | } | |
1298 | ||
1299 | int | |
1300 | ctf_add_enumerator (ctf_file_t *fp, ctf_id_t enid, const char *name, | |
1301 | int value) | |
1302 | { | |
1303 | ctf_dtdef_t *dtd = ctf_dtd_lookup (fp, enid); | |
1304 | ctf_dmdef_t *dmd; | |
1305 | ||
1306 | uint32_t kind, vlen, root; | |
1307 | char *s; | |
1308 | ||
1309 | if (name == NULL) | |
1310 | return (ctf_set_errno (fp, EINVAL)); | |
1311 | ||
1312 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
1313 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
1314 | ||
1315 | if (dtd == NULL) | |
1316 | return (ctf_set_errno (fp, ECTF_BADID)); | |
1317 | ||
1318 | kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); | |
1319 | root = LCTF_INFO_ISROOT (fp, dtd->dtd_data.ctt_info); | |
1320 | vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info); | |
1321 | ||
1322 | if (kind != CTF_K_ENUM) | |
1323 | return (ctf_set_errno (fp, ECTF_NOTENUM)); | |
1324 | ||
1325 | if (vlen == CTF_MAX_VLEN) | |
1326 | return (ctf_set_errno (fp, ECTF_DTFULL)); | |
1327 | ||
1328 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
1329 | dmd != NULL; dmd = ctf_list_next (dmd)) | |
1330 | { | |
1331 | if (strcmp (dmd->dmd_name, name) == 0) | |
1332 | return (ctf_set_errno (fp, ECTF_DUPLICATE)); | |
1333 | } | |
1334 | ||
de07e349 | 1335 | if ((dmd = malloc (sizeof (ctf_dmdef_t))) == NULL) |
47d546f4 NA |
1336 | return (ctf_set_errno (fp, EAGAIN)); |
1337 | ||
de07e349 | 1338 | if ((s = strdup (name)) == NULL) |
47d546f4 | 1339 | { |
de07e349 | 1340 | free (dmd); |
47d546f4 NA |
1341 | return (ctf_set_errno (fp, EAGAIN)); |
1342 | } | |
1343 | ||
1344 | dmd->dmd_name = s; | |
1345 | dmd->dmd_type = CTF_ERR; | |
1346 | dmd->dmd_offset = 0; | |
1347 | dmd->dmd_value = value; | |
1348 | ||
1349 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, root, vlen + 1); | |
1350 | ctf_list_append (&dtd->dtd_u.dtu_members, dmd); | |
1351 | ||
47d546f4 NA |
1352 | fp->ctf_flags |= LCTF_DIRTY; |
1353 | ||
1354 | return 0; | |
1355 | } | |
1356 | ||
1357 | int | |
1358 | ctf_add_member_offset (ctf_file_t *fp, ctf_id_t souid, const char *name, | |
1359 | ctf_id_t type, unsigned long bit_offset) | |
1360 | { | |
1361 | ctf_dtdef_t *dtd = ctf_dtd_lookup (fp, souid); | |
1362 | ctf_dmdef_t *dmd; | |
1363 | ||
1364 | ssize_t msize, malign, ssize; | |
1365 | uint32_t kind, vlen, root; | |
1366 | char *s = NULL; | |
1367 | ||
1368 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
1369 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
1370 | ||
1371 | if (dtd == NULL) | |
1372 | return (ctf_set_errno (fp, ECTF_BADID)); | |
1373 | ||
ab769488 NA |
1374 | if (name != NULL && name[0] == '\0') |
1375 | name = NULL; | |
1376 | ||
47d546f4 NA |
1377 | kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); |
1378 | root = LCTF_INFO_ISROOT (fp, dtd->dtd_data.ctt_info); | |
1379 | vlen = LCTF_INFO_VLEN (fp, dtd->dtd_data.ctt_info); | |
1380 | ||
1381 | if (kind != CTF_K_STRUCT && kind != CTF_K_UNION) | |
1382 | return (ctf_set_errno (fp, ECTF_NOTSOU)); | |
1383 | ||
1384 | if (vlen == CTF_MAX_VLEN) | |
1385 | return (ctf_set_errno (fp, ECTF_DTFULL)); | |
1386 | ||
1387 | if (name != NULL) | |
1388 | { | |
1389 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); | |
1390 | dmd != NULL; dmd = ctf_list_next (dmd)) | |
1391 | { | |
1392 | if (dmd->dmd_name != NULL && strcmp (dmd->dmd_name, name) == 0) | |
1393 | return (ctf_set_errno (fp, ECTF_DUPLICATE)); | |
1394 | } | |
1395 | } | |
1396 | ||
a0486bac JM |
1397 | if ((msize = ctf_type_size (fp, type)) < 0 || |
1398 | (malign = ctf_type_align (fp, type)) < 0) | |
2361f1c8 NA |
1399 | { |
1400 | /* The unimplemented type, and any type that resolves to it, has no size | |
1401 | and no alignment: it can correspond to any number of compiler-inserted | |
1402 | types. */ | |
1403 | ||
1404 | if (ctf_errno (fp) == ECTF_NONREPRESENTABLE) | |
1405 | { | |
1406 | msize = 0; | |
1407 | malign = 0; | |
1408 | ctf_set_errno (fp, 0); | |
1409 | } | |
1410 | else | |
1411 | return -1; /* errno is set for us. */ | |
1412 | } | |
47d546f4 | 1413 | |
de07e349 | 1414 | if ((dmd = malloc (sizeof (ctf_dmdef_t))) == NULL) |
47d546f4 NA |
1415 | return (ctf_set_errno (fp, EAGAIN)); |
1416 | ||
de07e349 | 1417 | if (name != NULL && (s = strdup (name)) == NULL) |
47d546f4 | 1418 | { |
de07e349 | 1419 | free (dmd); |
47d546f4 NA |
1420 | return (ctf_set_errno (fp, EAGAIN)); |
1421 | } | |
1422 | ||
1423 | dmd->dmd_name = s; | |
1424 | dmd->dmd_type = type; | |
1425 | dmd->dmd_value = -1; | |
1426 | ||
1427 | if (kind == CTF_K_STRUCT && vlen != 0) | |
1428 | { | |
1429 | if (bit_offset == (unsigned long) - 1) | |
1430 | { | |
1431 | /* Natural alignment. */ | |
1432 | ||
1433 | ctf_dmdef_t *lmd = ctf_list_prev (&dtd->dtd_u.dtu_members); | |
1434 | ctf_id_t ltype = ctf_type_resolve (fp, lmd->dmd_type); | |
1435 | size_t off = lmd->dmd_offset; | |
1436 | ||
1437 | ctf_encoding_t linfo; | |
1438 | ssize_t lsize; | |
1439 | ||
2361f1c8 NA |
1440 | /* Propagate any error from ctf_type_resolve. If the last member was |
1441 | of unimplemented type, this may be -ECTF_NONREPRESENTABLE: we | |
1442 | cannot insert right after such a member without explicit offset | |
1443 | specification, because its alignment and size is not known. */ | |
1444 | if (ltype == CTF_ERR) | |
1445 | { | |
1446 | free (dmd); | |
1447 | return -1; /* errno is set for us. */ | |
1448 | } | |
1449 | ||
a0486bac | 1450 | if (ctf_type_encoding (fp, ltype, &linfo) == 0) |
47d546f4 | 1451 | off += linfo.cte_bits; |
a0486bac | 1452 | else if ((lsize = ctf_type_size (fp, ltype)) > 0) |
76fad999 | 1453 | off += lsize * CHAR_BIT; |
47d546f4 NA |
1454 | |
1455 | /* Round up the offset of the end of the last member to | |
1456 | the next byte boundary, convert 'off' to bytes, and | |
1457 | then round it up again to the next multiple of the | |
1458 | alignment required by the new member. Finally, | |
1459 | convert back to bits and store the result in | |
1460 | dmd_offset. Technically we could do more efficient | |
1461 | packing if the new member is a bit-field, but we're | |
1462 | the "compiler" and ANSI says we can do as we choose. */ | |
1463 | ||
76fad999 | 1464 | off = roundup (off, CHAR_BIT) / CHAR_BIT; |
47d546f4 | 1465 | off = roundup (off, MAX (malign, 1)); |
76fad999 | 1466 | dmd->dmd_offset = off * CHAR_BIT; |
47d546f4 NA |
1467 | ssize = off + msize; |
1468 | } | |
1469 | else | |
1470 | { | |
1471 | /* Specified offset in bits. */ | |
1472 | ||
1473 | dmd->dmd_offset = bit_offset; | |
1474 | ssize = ctf_get_ctt_size (fp, &dtd->dtd_data, NULL, NULL); | |
76fad999 | 1475 | ssize = MAX (ssize, ((signed) bit_offset / CHAR_BIT) + msize); |
47d546f4 NA |
1476 | } |
1477 | } | |
1478 | else | |
1479 | { | |
1480 | dmd->dmd_offset = 0; | |
1481 | ssize = ctf_get_ctt_size (fp, &dtd->dtd_data, NULL, NULL); | |
1482 | ssize = MAX (ssize, msize); | |
1483 | } | |
1484 | ||
a0486bac | 1485 | if ((size_t) ssize > CTF_MAX_SIZE) |
47d546f4 NA |
1486 | { |
1487 | dtd->dtd_data.ctt_size = CTF_LSIZE_SENT; | |
1488 | dtd->dtd_data.ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI (ssize); | |
1489 | dtd->dtd_data.ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO (ssize); | |
1490 | } | |
1491 | else | |
1492 | dtd->dtd_data.ctt_size = (uint32_t) ssize; | |
1493 | ||
1494 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, root, vlen + 1); | |
1495 | ctf_list_append (&dtd->dtd_u.dtu_members, dmd); | |
1496 | ||
47d546f4 NA |
1497 | fp->ctf_flags |= LCTF_DIRTY; |
1498 | return 0; | |
1499 | } | |
1500 | ||
1501 | int | |
1502 | ctf_add_member_encoded (ctf_file_t *fp, ctf_id_t souid, const char *name, | |
1503 | ctf_id_t type, unsigned long bit_offset, | |
1504 | const ctf_encoding_t encoding) | |
1505 | { | |
1506 | ctf_dtdef_t *dtd = ctf_dtd_lookup (fp, type); | |
1507 | int kind = LCTF_INFO_KIND (fp, dtd->dtd_data.ctt_info); | |
1508 | int otype = type; | |
1509 | ||
1510 | if ((kind != CTF_K_INTEGER) && (kind != CTF_K_FLOAT) && (kind != CTF_K_ENUM)) | |
1511 | return (ctf_set_errno (fp, ECTF_NOTINTFP)); | |
1512 | ||
1513 | if ((type = ctf_add_slice (fp, CTF_ADD_NONROOT, otype, &encoding)) == CTF_ERR) | |
a0486bac | 1514 | return -1; /* errno is set for us. */ |
47d546f4 NA |
1515 | |
1516 | return ctf_add_member_offset (fp, souid, name, type, bit_offset); | |
1517 | } | |
1518 | ||
1519 | int | |
1520 | ctf_add_member (ctf_file_t *fp, ctf_id_t souid, const char *name, | |
1521 | ctf_id_t type) | |
1522 | { | |
1523 | return ctf_add_member_offset (fp, souid, name, type, (unsigned long) - 1); | |
1524 | } | |
1525 | ||
1526 | int | |
1527 | ctf_add_variable (ctf_file_t *fp, const char *name, ctf_id_t ref) | |
1528 | { | |
1529 | ctf_dvdef_t *dvd; | |
1530 | ctf_file_t *tmp = fp; | |
1531 | ||
1532 | if (!(fp->ctf_flags & LCTF_RDWR)) | |
1533 | return (ctf_set_errno (fp, ECTF_RDONLY)); | |
1534 | ||
1535 | if (ctf_dvd_lookup (fp, name) != NULL) | |
1536 | return (ctf_set_errno (fp, ECTF_DUPLICATE)); | |
1537 | ||
1538 | if (ctf_lookup_by_id (&tmp, ref) == NULL) | |
a0486bac | 1539 | return -1; /* errno is set for us. */ |
47d546f4 | 1540 | |
791915db NA |
1541 | /* Make sure this type is representable. */ |
1542 | if ((ctf_type_resolve (fp, ref) == CTF_ERR) | |
1543 | && (ctf_errno (fp) == ECTF_NONREPRESENTABLE)) | |
1544 | return -1; | |
1545 | ||
de07e349 | 1546 | if ((dvd = malloc (sizeof (ctf_dvdef_t))) == NULL) |
47d546f4 NA |
1547 | return (ctf_set_errno (fp, EAGAIN)); |
1548 | ||
de07e349 | 1549 | if (name != NULL && (dvd->dvd_name = strdup (name)) == NULL) |
47d546f4 | 1550 | { |
de07e349 | 1551 | free (dvd); |
47d546f4 NA |
1552 | return (ctf_set_errno (fp, EAGAIN)); |
1553 | } | |
1554 | dvd->dvd_type = ref; | |
1555 | dvd->dvd_snapshots = fp->ctf_snapshots; | |
1556 | ||
24865428 NA |
1557 | if (ctf_dvd_insert (fp, dvd) < 0) |
1558 | { | |
de07e349 NA |
1559 | free (dvd->dvd_name); |
1560 | free (dvd); | |
24865428 NA |
1561 | return -1; /* errno is set for us. */ |
1562 | } | |
47d546f4 | 1563 | |
47d546f4 NA |
1564 | fp->ctf_flags |= LCTF_DIRTY; |
1565 | return 0; | |
1566 | } | |
1567 | ||
c499eb68 NA |
1568 | static int |
1569 | enumcmp (const char *name, int value, void *arg) | |
1570 | { | |
1571 | ctf_bundle_t *ctb = arg; | |
1572 | int bvalue; | |
1573 | ||
a0486bac | 1574 | if (ctf_enum_value (ctb->ctb_file, ctb->ctb_type, name, &bvalue) < 0) |
c499eb68 | 1575 | { |
99dc3ebd NA |
1576 | ctf_dprintf ("Conflict due to member %s iteration error: %s.\n", name, |
1577 | ctf_errmsg (ctf_errno (ctb->ctb_file))); | |
c499eb68 NA |
1578 | return 1; |
1579 | } | |
1580 | if (value != bvalue) | |
1581 | { | |
1582 | ctf_dprintf ("Conflict due to value change: %i versus %i\n", | |
1583 | value, bvalue); | |
1584 | return 1; | |
1585 | } | |
1586 | return 0; | |
1587 | } | |
1588 | ||
1589 | static int | |
1590 | enumadd (const char *name, int value, void *arg) | |
1591 | { | |
1592 | ctf_bundle_t *ctb = arg; | |
1593 | ||
1594 | return (ctf_add_enumerator (ctb->ctb_file, ctb->ctb_type, | |
a0486bac | 1595 | name, value) < 0); |
c499eb68 NA |
1596 | } |
1597 | ||
1598 | static int | |
1599 | membcmp (const char *name, ctf_id_t type _libctf_unused_, unsigned long offset, | |
1600 | void *arg) | |
1601 | { | |
1602 | ctf_bundle_t *ctb = arg; | |
1603 | ctf_membinfo_t ctm; | |
1604 | ||
a0486bac | 1605 | if (ctf_member_info (ctb->ctb_file, ctb->ctb_type, name, &ctm) < 0) |
c499eb68 | 1606 | { |
99dc3ebd NA |
1607 | ctf_dprintf ("Conflict due to member %s iteration error: %s.\n", name, |
1608 | ctf_errmsg (ctf_errno (ctb->ctb_file))); | |
c499eb68 NA |
1609 | return 1; |
1610 | } | |
1611 | if (ctm.ctm_offset != offset) | |
1612 | { | |
1613 | ctf_dprintf ("Conflict due to member %s offset change: " | |
1614 | "%lx versus %lx\n", name, ctm.ctm_offset, offset); | |
1615 | return 1; | |
1616 | } | |
1617 | return 0; | |
1618 | } | |
1619 | ||
1620 | static int | |
1621 | membadd (const char *name, ctf_id_t type, unsigned long offset, void *arg) | |
1622 | { | |
1623 | ctf_bundle_t *ctb = arg; | |
1624 | ctf_dmdef_t *dmd; | |
1625 | char *s = NULL; | |
1626 | ||
de07e349 | 1627 | if ((dmd = malloc (sizeof (ctf_dmdef_t))) == NULL) |
c499eb68 NA |
1628 | return (ctf_set_errno (ctb->ctb_file, EAGAIN)); |
1629 | ||
de07e349 | 1630 | if (name != NULL && (s = strdup (name)) == NULL) |
c499eb68 | 1631 | { |
de07e349 | 1632 | free (dmd); |
c499eb68 NA |
1633 | return (ctf_set_errno (ctb->ctb_file, EAGAIN)); |
1634 | } | |
1635 | ||
1636 | /* For now, dmd_type is copied as the src_fp's type; it is reset to an | |
1637 | equivalent dst_fp type by a final loop in ctf_add_type(), below. */ | |
1638 | dmd->dmd_name = s; | |
1639 | dmd->dmd_type = type; | |
1640 | dmd->dmd_offset = offset; | |
1641 | dmd->dmd_value = -1; | |
1642 | ||
1643 | ctf_list_append (&ctb->ctb_dtd->dtd_u.dtu_members, dmd); | |
1644 | ||
c499eb68 NA |
1645 | ctb->ctb_file->ctf_flags |= LCTF_DIRTY; |
1646 | return 0; | |
1647 | } | |
1648 | ||
1649 | /* The ctf_add_type routine is used to copy a type from a source CTF container | |
1650 | to a dynamic destination container. This routine operates recursively by | |
1651 | following the source type's links and embedded member types. If the | |
1652 | destination container already contains a named type which has the same | |
1653 | attributes, then we succeed and return this type but no changes occur. */ | |
99dc3ebd NA |
1654 | static ctf_id_t |
1655 | ctf_add_type_internal (ctf_file_t *dst_fp, ctf_file_t *src_fp, ctf_id_t src_type, | |
1656 | ctf_file_t *proc_tracking_fp) | |
c499eb68 NA |
1657 | { |
1658 | ctf_id_t dst_type = CTF_ERR; | |
1659 | uint32_t dst_kind = CTF_K_UNKNOWN; | |
99dc3ebd | 1660 | ctf_file_t *tmp_fp = dst_fp; |
c499eb68 NA |
1661 | ctf_id_t tmp; |
1662 | ||
1663 | const char *name; | |
5de9eada | 1664 | uint32_t kind, forward_kind, flag, vlen; |
c499eb68 NA |
1665 | |
1666 | const ctf_type_t *src_tp, *dst_tp; | |
1667 | ctf_bundle_t src, dst; | |
1668 | ctf_encoding_t src_en, dst_en; | |
1669 | ctf_arinfo_t src_ar, dst_ar; | |
1670 | ||
c499eb68 | 1671 | ctf_funcinfo_t ctc; |
c499eb68 | 1672 | |
886453cb | 1673 | ctf_id_t orig_src_type = src_type; |
c499eb68 NA |
1674 | |
1675 | if (!(dst_fp->ctf_flags & LCTF_RDWR)) | |
1676 | return (ctf_set_errno (dst_fp, ECTF_RDONLY)); | |
1677 | ||
1678 | if ((src_tp = ctf_lookup_by_id (&src_fp, src_type)) == NULL) | |
1679 | return (ctf_set_errno (dst_fp, ctf_errno (src_fp))); | |
1680 | ||
791915db NA |
1681 | if ((ctf_type_resolve (src_fp, src_type) == CTF_ERR) |
1682 | && (ctf_errno (src_fp) == ECTF_NONREPRESENTABLE)) | |
1683 | return (ctf_set_errno (dst_fp, ECTF_NONREPRESENTABLE)); | |
1684 | ||
c499eb68 NA |
1685 | name = ctf_strptr (src_fp, src_tp->ctt_name); |
1686 | kind = LCTF_INFO_KIND (src_fp, src_tp->ctt_info); | |
1687 | flag = LCTF_INFO_ISROOT (src_fp, src_tp->ctt_info); | |
1688 | vlen = LCTF_INFO_VLEN (src_fp, src_tp->ctt_info); | |
1689 | ||
99dc3ebd NA |
1690 | /* If this is a type we are currently in the middle of adding, hand it |
1691 | straight back. (This lets us handle self-referential structures without | |
1692 | considering forwards and empty structures the same as their completed | |
1693 | forms.) */ | |
1694 | ||
1695 | tmp = ctf_type_mapping (src_fp, src_type, &tmp_fp); | |
1696 | ||
1697 | if (tmp != 0) | |
1698 | { | |
1699 | if (ctf_dynhash_lookup (proc_tracking_fp->ctf_add_processing, | |
1700 | (void *) (uintptr_t) src_type)) | |
1701 | return tmp; | |
1702 | ||
1703 | /* If this type has already been added from this container, and is the same | |
1704 | kind and (if a struct or union) has the same number of members, hand it | |
1705 | straight back. */ | |
1706 | ||
d04a47ac | 1707 | if (ctf_type_kind_unsliced (tmp_fp, tmp) == (int) kind) |
99dc3ebd | 1708 | { |
d04a47ac NA |
1709 | if (kind == CTF_K_STRUCT || kind == CTF_K_UNION |
1710 | || kind == CTF_K_ENUM) | |
1711 | { | |
1712 | if ((dst_tp = ctf_lookup_by_id (&tmp_fp, dst_type)) != NULL) | |
1713 | if (vlen == LCTF_INFO_VLEN (tmp_fp, dst_tp->ctt_info)) | |
1714 | return tmp; | |
1715 | } | |
1716 | else | |
1717 | return tmp; | |
99dc3ebd NA |
1718 | } |
1719 | } | |
1720 | ||
5de9eada NA |
1721 | forward_kind = kind; |
1722 | if (kind == CTF_K_FORWARD) | |
1723 | forward_kind = src_tp->ctt_type; | |
1724 | ||
c499eb68 NA |
1725 | /* If the source type has a name and is a root type (visible at the |
1726 | top-level scope), lookup the name in the destination container and | |
1727 | verify that it is of the same kind before we do anything else. */ | |
1728 | ||
1729 | if ((flag & CTF_ADD_ROOT) && name[0] != '\0' | |
676c3ecb | 1730 | && (tmp = ctf_lookup_by_rawname (dst_fp, forward_kind, name)) != 0) |
c499eb68 NA |
1731 | { |
1732 | dst_type = tmp; | |
1733 | dst_kind = ctf_type_kind_unsliced (dst_fp, dst_type); | |
1734 | } | |
1735 | ||
1736 | /* If an identically named dst_type exists, fail with ECTF_CONFLICT | |
1737 | unless dst_type is a forward declaration and src_type is a struct, | |
5de9eada | 1738 | union, or enum (i.e. the definition of the previous forward decl). |
c499eb68 | 1739 | |
5de9eada NA |
1740 | We also allow addition in the opposite order (addition of a forward when a |
1741 | struct, union, or enum already exists), which is a NOP and returns the | |
1742 | already-present struct, union, or enum. */ | |
1743 | ||
1744 | if (dst_type != CTF_ERR && dst_kind != kind) | |
c499eb68 | 1745 | { |
5de9eada NA |
1746 | if (kind == CTF_K_FORWARD |
1747 | && (dst_kind == CTF_K_ENUM || dst_kind == CTF_K_STRUCT | |
1748 | || dst_kind == CTF_K_UNION)) | |
1749 | { | |
1750 | ctf_add_type_mapping (src_fp, src_type, dst_fp, dst_type); | |
1751 | return dst_type; | |
1752 | } | |
1753 | ||
1754 | if (dst_kind != CTF_K_FORWARD | |
1755 | || (kind != CTF_K_ENUM && kind != CTF_K_STRUCT | |
1756 | && kind != CTF_K_UNION)) | |
1757 | { | |
1758 | ctf_dprintf ("Conflict for type %s: kinds differ, new: %i; " | |
1759 | "old (ID %lx): %i\n", name, kind, dst_type, dst_kind); | |
1760 | return (ctf_set_errno (dst_fp, ECTF_CONFLICT)); | |
1761 | } | |
c499eb68 NA |
1762 | } |
1763 | ||
1764 | /* We take special action for an integer, float, or slice since it is | |
1765 | described not only by its name but also its encoding. For integers, | |
1766 | bit-fields exploit this degeneracy. */ | |
1767 | ||
1768 | if (kind == CTF_K_INTEGER || kind == CTF_K_FLOAT || kind == CTF_K_SLICE) | |
1769 | { | |
1770 | if (ctf_type_encoding (src_fp, src_type, &src_en) != 0) | |
1771 | return (ctf_set_errno (dst_fp, ctf_errno (src_fp))); | |
1772 | ||
1773 | if (dst_type != CTF_ERR) | |
1774 | { | |
1775 | ctf_file_t *fp = dst_fp; | |
1776 | ||
1777 | if ((dst_tp = ctf_lookup_by_id (&fp, dst_type)) == NULL) | |
1778 | return CTF_ERR; | |
1779 | ||
99dc3ebd NA |
1780 | if (ctf_type_encoding (dst_fp, dst_type, &dst_en) != 0) |
1781 | return CTF_ERR; /* errno set for us. */ | |
1782 | ||
c499eb68 NA |
1783 | if (LCTF_INFO_ISROOT (fp, dst_tp->ctt_info) & CTF_ADD_ROOT) |
1784 | { | |
1785 | /* The type that we found in the hash is also root-visible. If | |
1786 | the two types match then use the existing one; otherwise, | |
1787 | declare a conflict. Note: slices are not certain to match | |
1788 | even if there is no conflict: we must check the contained type | |
1789 | too. */ | |
1790 | ||
c499eb68 NA |
1791 | if (memcmp (&src_en, &dst_en, sizeof (ctf_encoding_t)) == 0) |
1792 | { | |
1793 | if (kind != CTF_K_SLICE) | |
886453cb NA |
1794 | { |
1795 | ctf_add_type_mapping (src_fp, src_type, dst_fp, dst_type); | |
1796 | return dst_type; | |
1797 | } | |
c499eb68 NA |
1798 | } |
1799 | else | |
1800 | { | |
1801 | return (ctf_set_errno (dst_fp, ECTF_CONFLICT)); | |
1802 | } | |
1803 | } | |
1804 | else | |
1805 | { | |
99dc3ebd NA |
1806 | /* We found a non-root-visible type in the hash. If its encoding |
1807 | is the same, we can reuse it, unless it is a slice. */ | |
c499eb68 | 1808 | |
99dc3ebd | 1809 | if (memcmp (&src_en, &dst_en, sizeof (ctf_encoding_t)) == 0) |
c499eb68 NA |
1810 | { |
1811 | if (kind != CTF_K_SLICE) | |
886453cb | 1812 | { |
99dc3ebd NA |
1813 | ctf_add_type_mapping (src_fp, src_type, dst_fp, dst_type); |
1814 | return dst_type; | |
886453cb | 1815 | } |
c499eb68 | 1816 | } |
c499eb68 NA |
1817 | } |
1818 | } | |
1819 | } | |
1820 | ||
1821 | src.ctb_file = src_fp; | |
1822 | src.ctb_type = src_type; | |
1823 | src.ctb_dtd = NULL; | |
1824 | ||
1825 | dst.ctb_file = dst_fp; | |
1826 | dst.ctb_type = dst_type; | |
1827 | dst.ctb_dtd = NULL; | |
1828 | ||
99dc3ebd NA |
1829 | /* Now perform kind-specific processing. If dst_type is CTF_ERR, then we add |
1830 | a new type with the same properties as src_type to dst_fp. If dst_type is | |
1831 | not CTF_ERR, then we verify that dst_type has the same attributes as | |
1832 | src_type. We recurse for embedded references. Before we start, we note | |
1833 | that we are processing this type, to prevent infinite recursion: we do not | |
1834 | re-process any type that appears in this list. The list is emptied | |
1835 | wholesale at the end of processing everything in this recursive stack. */ | |
1836 | ||
1837 | if (ctf_dynhash_insert (proc_tracking_fp->ctf_add_processing, | |
1838 | (void *) (uintptr_t) src_type, (void *) 1) < 0) | |
1839 | return ctf_set_errno (dst_fp, ENOMEM); | |
1840 | ||
c499eb68 NA |
1841 | switch (kind) |
1842 | { | |
1843 | case CTF_K_INTEGER: | |
1844 | /* If we found a match we will have either returned it or declared a | |
1845 | conflict. */ | |
1846 | dst_type = ctf_add_integer (dst_fp, flag, name, &src_en); | |
1847 | break; | |
1848 | ||
1849 | case CTF_K_FLOAT: | |
1850 | /* If we found a match we will have either returned it or declared a | |
1851 | conflict. */ | |
1852 | dst_type = ctf_add_float (dst_fp, flag, name, &src_en); | |
1853 | break; | |
1854 | ||
1855 | case CTF_K_SLICE: | |
1856 | /* We have checked for conflicting encodings: now try to add the | |
1857 | contained type. */ | |
1858 | src_type = ctf_type_reference (src_fp, src_type); | |
99dc3ebd NA |
1859 | src_type = ctf_add_type_internal (dst_fp, src_fp, src_type, |
1860 | proc_tracking_fp); | |
c499eb68 NA |
1861 | |
1862 | if (src_type == CTF_ERR) | |
1863 | return CTF_ERR; /* errno is set for us. */ | |
1864 | ||
1865 | dst_type = ctf_add_slice (dst_fp, flag, src_type, &src_en); | |
1866 | break; | |
1867 | ||
1868 | case CTF_K_POINTER: | |
1869 | case CTF_K_VOLATILE: | |
1870 | case CTF_K_CONST: | |
1871 | case CTF_K_RESTRICT: | |
1872 | src_type = ctf_type_reference (src_fp, src_type); | |
99dc3ebd NA |
1873 | src_type = ctf_add_type_internal (dst_fp, src_fp, src_type, |
1874 | proc_tracking_fp); | |
c499eb68 NA |
1875 | |
1876 | if (src_type == CTF_ERR) | |
1877 | return CTF_ERR; /* errno is set for us. */ | |
1878 | ||
1879 | dst_type = ctf_add_reftype (dst_fp, flag, src_type, kind); | |
1880 | break; | |
1881 | ||
1882 | case CTF_K_ARRAY: | |
a0486bac | 1883 | if (ctf_array_info (src_fp, src_type, &src_ar) != 0) |
c499eb68 NA |
1884 | return (ctf_set_errno (dst_fp, ctf_errno (src_fp))); |
1885 | ||
1886 | src_ar.ctr_contents = | |
99dc3ebd NA |
1887 | ctf_add_type_internal (dst_fp, src_fp, src_ar.ctr_contents, |
1888 | proc_tracking_fp); | |
1889 | src_ar.ctr_index = ctf_add_type_internal (dst_fp, src_fp, | |
1890 | src_ar.ctr_index, | |
1891 | proc_tracking_fp); | |
c499eb68 NA |
1892 | src_ar.ctr_nelems = src_ar.ctr_nelems; |
1893 | ||
1894 | if (src_ar.ctr_contents == CTF_ERR || src_ar.ctr_index == CTF_ERR) | |
1895 | return CTF_ERR; /* errno is set for us. */ | |
1896 | ||
1897 | if (dst_type != CTF_ERR) | |
1898 | { | |
1899 | if (ctf_array_info (dst_fp, dst_type, &dst_ar) != 0) | |
1900 | return CTF_ERR; /* errno is set for us. */ | |
1901 | ||
1902 | if (memcmp (&src_ar, &dst_ar, sizeof (ctf_arinfo_t))) | |
1903 | { | |
1904 | ctf_dprintf ("Conflict for type %s against ID %lx: " | |
1905 | "array info differs, old %lx/%lx/%x; " | |
1906 | "new: %lx/%lx/%x\n", name, dst_type, | |
1907 | src_ar.ctr_contents, src_ar.ctr_index, | |
1908 | src_ar.ctr_nelems, dst_ar.ctr_contents, | |
1909 | dst_ar.ctr_index, dst_ar.ctr_nelems); | |
1910 | return (ctf_set_errno (dst_fp, ECTF_CONFLICT)); | |
1911 | } | |
1912 | } | |
1913 | else | |
1914 | dst_type = ctf_add_array (dst_fp, flag, &src_ar); | |
1915 | break; | |
1916 | ||
1917 | case CTF_K_FUNCTION: | |
99dc3ebd NA |
1918 | ctc.ctc_return = ctf_add_type_internal (dst_fp, src_fp, |
1919 | src_tp->ctt_type, | |
1920 | proc_tracking_fp); | |
c499eb68 NA |
1921 | ctc.ctc_argc = 0; |
1922 | ctc.ctc_flags = 0; | |
1923 | ||
1924 | if (ctc.ctc_return == CTF_ERR) | |
1925 | return CTF_ERR; /* errno is set for us. */ | |
1926 | ||
1927 | dst_type = ctf_add_function (dst_fp, flag, &ctc, NULL); | |
1928 | break; | |
1929 | ||
1930 | case CTF_K_STRUCT: | |
1931 | case CTF_K_UNION: | |
1932 | { | |
1933 | ctf_dmdef_t *dmd; | |
1934 | int errs = 0; | |
a0486bac JM |
1935 | size_t size; |
1936 | ssize_t ssize; | |
99dc3ebd | 1937 | ctf_dtdef_t *dtd; |
c499eb68 NA |
1938 | |
1939 | /* Technically to match a struct or union we need to check both | |
1940 | ways (src members vs. dst, dst members vs. src) but we make | |
1941 | this more optimal by only checking src vs. dst and comparing | |
1942 | the total size of the structure (which we must do anyway) | |
1943 | which covers the possibility of dst members not in src. | |
1944 | This optimization can be defeated for unions, but is so | |
1945 | pathological as to render it irrelevant for our purposes. */ | |
1946 | ||
99dc3ebd NA |
1947 | if (dst_type != CTF_ERR && kind != CTF_K_FORWARD |
1948 | && dst_kind != CTF_K_FORWARD) | |
c499eb68 NA |
1949 | { |
1950 | if (ctf_type_size (src_fp, src_type) != | |
1951 | ctf_type_size (dst_fp, dst_type)) | |
1952 | { | |
1953 | ctf_dprintf ("Conflict for type %s against ID %lx: " | |
62d8e3b7 NA |
1954 | "union size differs, old %li, new %li\n", |
1955 | name, dst_type, | |
1956 | (long) ctf_type_size (src_fp, src_type), | |
1957 | (long) ctf_type_size (dst_fp, dst_type)); | |
c499eb68 NA |
1958 | return (ctf_set_errno (dst_fp, ECTF_CONFLICT)); |
1959 | } | |
1960 | ||
1961 | if (ctf_member_iter (src_fp, src_type, membcmp, &dst)) | |
1962 | { | |
1963 | ctf_dprintf ("Conflict for type %s against ID %lx: " | |
1964 | "members differ, see above\n", name, dst_type); | |
1965 | return (ctf_set_errno (dst_fp, ECTF_CONFLICT)); | |
1966 | } | |
1967 | ||
1968 | break; | |
1969 | } | |
1970 | ||
1971 | /* Unlike the other cases, copying structs and unions is done | |
1972 | manually so as to avoid repeated lookups in ctf_add_member | |
1973 | and to ensure the exact same member offsets as in src_type. */ | |
1974 | ||
676c3ecb | 1975 | dst_type = ctf_add_generic (dst_fp, flag, name, kind, &dtd); |
c499eb68 NA |
1976 | if (dst_type == CTF_ERR) |
1977 | return CTF_ERR; /* errno is set for us. */ | |
1978 | ||
1979 | dst.ctb_type = dst_type; | |
1980 | dst.ctb_dtd = dtd; | |
1981 | ||
99dc3ebd NA |
1982 | /* Pre-emptively add this struct to the type mapping so that |
1983 | structures that refer to themselves work. */ | |
1984 | ctf_add_type_mapping (src_fp, src_type, dst_fp, dst_type); | |
1985 | ||
c499eb68 NA |
1986 | if (ctf_member_iter (src_fp, src_type, membadd, &dst) != 0) |
1987 | errs++; /* Increment errs and fail at bottom of case. */ | |
1988 | ||
a0486bac JM |
1989 | if ((ssize = ctf_type_size (src_fp, src_type)) < 0) |
1990 | return CTF_ERR; /* errno is set for us. */ | |
1991 | ||
1992 | size = (size_t) ssize; | |
1993 | if (size > CTF_MAX_SIZE) | |
c499eb68 NA |
1994 | { |
1995 | dtd->dtd_data.ctt_size = CTF_LSIZE_SENT; | |
1996 | dtd->dtd_data.ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI (size); | |
1997 | dtd->dtd_data.ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO (size); | |
1998 | } | |
1999 | else | |
2000 | dtd->dtd_data.ctt_size = (uint32_t) size; | |
2001 | ||
2002 | dtd->dtd_data.ctt_info = CTF_TYPE_INFO (kind, flag, vlen); | |
2003 | ||
2004 | /* Make a final pass through the members changing each dmd_type (a | |
2005 | src_fp type) to an equivalent type in dst_fp. We pass through all | |
791915db NA |
2006 | members, leaving any that fail set to CTF_ERR, unless they fail |
2007 | because they are marking a member of type not representable in this | |
2008 | version of CTF, in which case we just want to silently omit them: | |
2009 | no consumer can do anything with them anyway. */ | |
c499eb68 NA |
2010 | for (dmd = ctf_list_next (&dtd->dtd_u.dtu_members); |
2011 | dmd != NULL; dmd = ctf_list_next (dmd)) | |
2012 | { | |
99dc3ebd NA |
2013 | ctf_file_t *dst = dst_fp; |
2014 | ctf_id_t memb_type; | |
2015 | ||
2016 | memb_type = ctf_type_mapping (src_fp, dmd->dmd_type, &dst); | |
2017 | if (memb_type == 0) | |
791915db | 2018 | { |
99dc3ebd NA |
2019 | if ((dmd->dmd_type = |
2020 | ctf_add_type_internal (dst_fp, src_fp, dmd->dmd_type, | |
2021 | proc_tracking_fp)) == CTF_ERR) | |
2022 | { | |
2023 | if (ctf_errno (dst_fp) != ECTF_NONREPRESENTABLE) | |
2024 | errs++; | |
2025 | } | |
791915db | 2026 | } |
99dc3ebd NA |
2027 | else |
2028 | dmd->dmd_type = memb_type; | |
c499eb68 NA |
2029 | } |
2030 | ||
2031 | if (errs) | |
2032 | return CTF_ERR; /* errno is set for us. */ | |
2033 | break; | |
2034 | } | |
2035 | ||
2036 | case CTF_K_ENUM: | |
99dc3ebd NA |
2037 | if (dst_type != CTF_ERR && kind != CTF_K_FORWARD |
2038 | && dst_kind != CTF_K_FORWARD) | |
c499eb68 NA |
2039 | { |
2040 | if (ctf_enum_iter (src_fp, src_type, enumcmp, &dst) | |
2041 | || ctf_enum_iter (dst_fp, dst_type, enumcmp, &src)) | |
2042 | { | |
2043 | ctf_dprintf ("Conflict for enum %s against ID %lx: " | |
2044 | "members differ, see above\n", name, dst_type); | |
2045 | return (ctf_set_errno (dst_fp, ECTF_CONFLICT)); | |
2046 | } | |
2047 | } | |
2048 | else | |
2049 | { | |
2050 | dst_type = ctf_add_enum (dst_fp, flag, name); | |
2051 | if ((dst.ctb_type = dst_type) == CTF_ERR | |
2052 | || ctf_enum_iter (src_fp, src_type, enumadd, &dst)) | |
2053 | return CTF_ERR; /* errno is set for us */ | |
2054 | } | |
2055 | break; | |
2056 | ||
2057 | case CTF_K_FORWARD: | |
2058 | if (dst_type == CTF_ERR) | |
5de9eada | 2059 | dst_type = ctf_add_forward (dst_fp, flag, name, forward_kind); |
c499eb68 NA |
2060 | break; |
2061 | ||
2062 | case CTF_K_TYPEDEF: | |
2063 | src_type = ctf_type_reference (src_fp, src_type); | |
99dc3ebd NA |
2064 | src_type = ctf_add_type_internal (dst_fp, src_fp, src_type, |
2065 | proc_tracking_fp); | |
c499eb68 NA |
2066 | |
2067 | if (src_type == CTF_ERR) | |
2068 | return CTF_ERR; /* errno is set for us. */ | |
2069 | ||
2070 | /* If dst_type is not CTF_ERR at this point, we should check if | |
2071 | ctf_type_reference(dst_fp, dst_type) != src_type and if so fail with | |
2072 | ECTF_CONFLICT. However, this causes problems with bitness typedefs | |
2073 | that vary based on things like if 32-bit then pid_t is int otherwise | |
2074 | long. We therefore omit this check and assume that if the identically | |
2075 | named typedef already exists in dst_fp, it is correct or | |
2076 | equivalent. */ | |
2077 | ||
2078 | if (dst_type == CTF_ERR) | |
c499eb68 | 2079 | dst_type = ctf_add_typedef (dst_fp, flag, name, src_type); |
99dc3ebd | 2080 | |
c499eb68 NA |
2081 | break; |
2082 | ||
2083 | default: | |
2084 | return (ctf_set_errno (dst_fp, ECTF_CORRUPT)); | |
2085 | } | |
2086 | ||
886453cb NA |
2087 | if (dst_type != CTF_ERR) |
2088 | ctf_add_type_mapping (src_fp, orig_src_type, dst_fp, dst_type); | |
c499eb68 NA |
2089 | return dst_type; |
2090 | } | |
2091 | ||
99dc3ebd NA |
2092 | ctf_id_t |
2093 | ctf_add_type (ctf_file_t *dst_fp, ctf_file_t *src_fp, ctf_id_t src_type) | |
2094 | { | |
2095 | ctf_id_t id; | |
2096 | ||
2097 | if (!src_fp->ctf_add_processing) | |
2098 | src_fp->ctf_add_processing = ctf_dynhash_create (ctf_hash_integer, | |
2099 | ctf_hash_eq_integer, | |
2100 | NULL, NULL); | |
2101 | ||
2102 | /* We store the hash on the source, because it contains only source type IDs: | |
2103 | but callers will invariably expect errors to appear on the dest. */ | |
2104 | if (!src_fp->ctf_add_processing) | |
2105 | return (ctf_set_errno (dst_fp, ENOMEM)); | |
2106 | ||
2107 | id = ctf_add_type_internal (dst_fp, src_fp, src_type, src_fp); | |
2108 | ctf_dynhash_empty (src_fp->ctf_add_processing); | |
2109 | ||
2110 | return id; | |
2111 | } | |
2112 | ||
fd55eae8 | 2113 | /* Write the compressed CTF data stream to the specified gzFile descriptor. */ |
47d546f4 NA |
2114 | int |
2115 | ctf_gzwrite (ctf_file_t *fp, gzFile fd) | |
2116 | { | |
fd55eae8 NA |
2117 | const unsigned char *buf; |
2118 | ssize_t resid; | |
47d546f4 NA |
2119 | ssize_t len; |
2120 | ||
fd55eae8 NA |
2121 | resid = sizeof (ctf_header_t); |
2122 | buf = (unsigned char *) fp->ctf_header; | |
2123 | while (resid != 0) | |
2124 | { | |
2125 | if ((len = gzwrite (fd, buf, resid)) <= 0) | |
2126 | return (ctf_set_errno (fp, errno)); | |
2127 | resid -= len; | |
2128 | buf += len; | |
2129 | } | |
2130 | ||
2131 | resid = fp->ctf_size; | |
2132 | buf = fp->ctf_buf; | |
47d546f4 NA |
2133 | while (resid != 0) |
2134 | { | |
2135 | if ((len = gzwrite (fd, buf, resid)) <= 0) | |
2136 | return (ctf_set_errno (fp, errno)); | |
2137 | resid -= len; | |
2138 | buf += len; | |
2139 | } | |
2140 | ||
2141 | return 0; | |
2142 | } | |
2143 | ||
2144 | /* Compress the specified CTF data stream and write it to the specified file | |
2145 | descriptor. */ | |
2146 | int | |
2147 | ctf_compress_write (ctf_file_t *fp, int fd) | |
2148 | { | |
2149 | unsigned char *buf; | |
2150 | unsigned char *bp; | |
2151 | ctf_header_t h; | |
2152 | ctf_header_t *hp = &h; | |
2153 | ssize_t header_len = sizeof (ctf_header_t); | |
2154 | ssize_t compress_len; | |
47d546f4 NA |
2155 | ssize_t len; |
2156 | int rc; | |
2157 | int err = 0; | |
2158 | ||
676c3ecb NA |
2159 | if (ctf_serialize (fp) < 0) |
2160 | return -1; /* errno is set for us. */ | |
2161 | ||
fd55eae8 | 2162 | memcpy (hp, fp->ctf_header, header_len); |
47d546f4 | 2163 | hp->cth_flags |= CTF_F_COMPRESS; |
676c3ecb | 2164 | compress_len = compressBound (fp->ctf_size); |
47d546f4 | 2165 | |
de07e349 | 2166 | if ((buf = malloc (compress_len)) == NULL) |
47d546f4 NA |
2167 | return (ctf_set_errno (fp, ECTF_ZALLOC)); |
2168 | ||
65365aa8 | 2169 | if ((rc = compress (buf, (uLongf *) &compress_len, |
fd55eae8 | 2170 | fp->ctf_buf, fp->ctf_size)) != Z_OK) |
47d546f4 NA |
2171 | { |
2172 | ctf_dprintf ("zlib deflate err: %s\n", zError (rc)); | |
2173 | err = ctf_set_errno (fp, ECTF_COMPRESS); | |
2174 | goto ret; | |
2175 | } | |
2176 | ||
2177 | while (header_len > 0) | |
2178 | { | |
2179 | if ((len = write (fd, hp, header_len)) < 0) | |
2180 | { | |
2181 | err = ctf_set_errno (fp, errno); | |
2182 | goto ret; | |
2183 | } | |
2184 | header_len -= len; | |
2185 | hp += len; | |
2186 | } | |
2187 | ||
2188 | bp = buf; | |
2189 | while (compress_len > 0) | |
2190 | { | |
2191 | if ((len = write (fd, bp, compress_len)) < 0) | |
2192 | { | |
2193 | err = ctf_set_errno (fp, errno); | |
2194 | goto ret; | |
2195 | } | |
2196 | compress_len -= len; | |
2197 | bp += len; | |
2198 | } | |
2199 | ||
2200 | ret: | |
de07e349 | 2201 | free (buf); |
47d546f4 NA |
2202 | return err; |
2203 | } | |
2204 | ||
5537f9b9 NA |
2205 | /* Optionally compress the specified CTF data stream and return it as a new |
2206 | dynamically-allocated string. */ | |
2207 | unsigned char * | |
2208 | ctf_write_mem (ctf_file_t *fp, size_t *size, size_t threshold) | |
2209 | { | |
2210 | unsigned char *buf; | |
2211 | unsigned char *bp; | |
2212 | ctf_header_t *hp; | |
2213 | ssize_t header_len = sizeof (ctf_header_t); | |
2214 | ssize_t compress_len; | |
5537f9b9 NA |
2215 | int rc; |
2216 | ||
676c3ecb NA |
2217 | if (ctf_serialize (fp) < 0) |
2218 | return NULL; /* errno is set for us. */ | |
2219 | ||
2220 | compress_len = compressBound (fp->ctf_size); | |
5537f9b9 | 2221 | if (fp->ctf_size < threshold) |
676c3ecb NA |
2222 | compress_len = fp->ctf_size; |
2223 | if ((buf = malloc (compress_len | |
5537f9b9 NA |
2224 | + sizeof (struct ctf_header))) == NULL) |
2225 | { | |
2226 | ctf_set_errno (fp, ENOMEM); | |
2227 | return NULL; | |
2228 | } | |
2229 | ||
2230 | hp = (ctf_header_t *) buf; | |
2231 | memcpy (hp, fp->ctf_header, header_len); | |
2232 | bp = buf + sizeof (struct ctf_header); | |
2233 | *size = sizeof (struct ctf_header); | |
2234 | ||
5537f9b9 NA |
2235 | if (fp->ctf_size < threshold) |
2236 | { | |
2237 | hp->cth_flags &= ~CTF_F_COMPRESS; | |
2238 | memcpy (bp, fp->ctf_buf, fp->ctf_size); | |
2239 | *size += fp->ctf_size; | |
2240 | } | |
2241 | else | |
2242 | { | |
2243 | hp->cth_flags |= CTF_F_COMPRESS; | |
2244 | if ((rc = compress (bp, (uLongf *) &compress_len, | |
2245 | fp->ctf_buf, fp->ctf_size)) != Z_OK) | |
2246 | { | |
2247 | ctf_dprintf ("zlib deflate err: %s\n", zError (rc)); | |
2248 | ctf_set_errno (fp, ECTF_COMPRESS); | |
de07e349 | 2249 | free (buf); |
5537f9b9 NA |
2250 | return NULL; |
2251 | } | |
2252 | *size += compress_len; | |
2253 | } | |
2254 | return buf; | |
2255 | } | |
2256 | ||
fd55eae8 | 2257 | /* Write the uncompressed CTF data stream to the specified file descriptor. */ |
47d546f4 NA |
2258 | int |
2259 | ctf_write (ctf_file_t *fp, int fd) | |
2260 | { | |
fd55eae8 NA |
2261 | const unsigned char *buf; |
2262 | ssize_t resid; | |
47d546f4 NA |
2263 | ssize_t len; |
2264 | ||
676c3ecb NA |
2265 | if (ctf_serialize (fp) < 0) |
2266 | return -1; /* errno is set for us. */ | |
2267 | ||
fd55eae8 NA |
2268 | resid = sizeof (ctf_header_t); |
2269 | buf = (unsigned char *) fp->ctf_header; | |
2270 | while (resid != 0) | |
2271 | { | |
2272 | if ((len = write (fd, buf, resid)) <= 0) | |
2273 | return (ctf_set_errno (fp, errno)); | |
2274 | resid -= len; | |
2275 | buf += len; | |
2276 | } | |
2277 | ||
2278 | resid = fp->ctf_size; | |
2279 | buf = fp->ctf_buf; | |
47d546f4 NA |
2280 | while (resid != 0) |
2281 | { | |
fd55eae8 | 2282 | if ((len = write (fd, buf, resid)) <= 0) |
47d546f4 NA |
2283 | return (ctf_set_errno (fp, errno)); |
2284 | resid -= len; | |
2285 | buf += len; | |
2286 | } | |
2287 | ||
2288 | return 0; | |
2289 | } |