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424163ea DJ |
1 | /* Target description support for GDB. |
2 | ||
61baf725 | 3 | Copyright (C) 2006-2017 Free Software Foundation, Inc. |
424163ea DJ |
4 | |
5 | Contributed by CodeSourcery. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
424163ea DJ |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
424163ea DJ |
21 | |
22 | #include "defs.h" | |
23 | #include "arch-utils.h" | |
23181151 | 24 | #include "gdbcmd.h" |
123dc839 DJ |
25 | #include "gdbtypes.h" |
26 | #include "reggroups.h" | |
424163ea DJ |
27 | #include "target.h" |
28 | #include "target-descriptions.h" | |
29709017 | 29 | #include "vec.h" |
123dc839 | 30 | #include "xml-support.h" |
23181151 | 31 | #include "xml-tdesc.h" |
c3f08eb7 | 32 | #include "osabi.h" |
424163ea | 33 | |
123dc839 DJ |
34 | #include "gdb_obstack.h" |
35 | #include "hashtab.h" | |
6ecd4729 | 36 | #include "inferior.h" |
25aa13e5 | 37 | #include <algorithm> |
27d41eac YQ |
38 | #include "completer.h" |
39 | #include "readline/tilde.h" /* tilde_expand */ | |
424163ea | 40 | |
6eb1e6a8 YQ |
41 | /* The interface to visit different elements of target description. */ |
42 | ||
43 | class tdesc_element_visitor | |
44 | { | |
45 | public: | |
46 | virtual void visit_pre (const target_desc *e) = 0; | |
47 | virtual void visit_post (const target_desc *e) = 0; | |
48 | ||
25aa13e5 YQ |
49 | virtual void visit_pre (const tdesc_feature *e) = 0; |
50 | virtual void visit_post (const tdesc_feature *e) = 0; | |
51 | ||
6eb1e6a8 YQ |
52 | virtual void visit (const tdesc_type *e) = 0; |
53 | virtual void visit (const tdesc_reg *e) = 0; | |
54 | }; | |
55 | ||
56 | class tdesc_element | |
57 | { | |
58 | public: | |
59 | virtual void accept (tdesc_element_visitor &v) const = 0; | |
60 | }; | |
61 | ||
424163ea DJ |
62 | /* Types. */ |
63 | ||
129c10bc | 64 | struct property |
29709017 | 65 | { |
129c10bc SM |
66 | property (const std::string &key_, const std::string &value_) |
67 | : key (key_), value (value_) | |
68 | {} | |
69 | ||
70 | std::string key; | |
71 | std::string value; | |
72 | }; | |
29709017 | 73 | |
123dc839 DJ |
74 | /* An individual register from a target description. */ |
75 | ||
6eb1e6a8 | 76 | typedef struct tdesc_reg : tdesc_element |
123dc839 | 77 | { |
72ddacb7 YQ |
78 | tdesc_reg (struct tdesc_feature *feature, const char *name_, |
79 | int regnum, int save_restore_, const char *group_, | |
80 | int bitsize_, const char *type_) | |
81 | : name (xstrdup (name_)), target_regnum (regnum), | |
82 | save_restore (save_restore_), | |
83 | group (group_ != NULL ? xstrdup (group_) : NULL), | |
84 | bitsize (bitsize_), | |
85 | type (type_ != NULL ? xstrdup (type_) : xstrdup ("<unknown>")) | |
86 | { | |
87 | /* If the register's type is target-defined, look it up now. We may not | |
88 | have easy access to the containing feature when we want it later. */ | |
89 | tdesc_type = tdesc_named_type (feature, type); | |
90 | } | |
91 | ||
6eb1e6a8 | 92 | virtual ~tdesc_reg () |
72ddacb7 YQ |
93 | { |
94 | xfree (name); | |
95 | xfree (type); | |
96 | xfree (group); | |
97 | } | |
98 | ||
d6541620 | 99 | DISABLE_COPY_AND_ASSIGN (tdesc_reg); |
72ddacb7 | 100 | |
123dc839 DJ |
101 | /* The name of this register. In standard features, it may be |
102 | recognized by the architecture support code, or it may be purely | |
103 | for the user. */ | |
104 | char *name; | |
105 | ||
106 | /* The register number used by this target to refer to this | |
107 | register. This is used for remote p/P packets and to determine | |
108 | the ordering of registers in the remote g/G packets. */ | |
109 | long target_regnum; | |
110 | ||
111 | /* If this flag is set, GDB should save and restore this register | |
112 | around calls to an inferior function. */ | |
113 | int save_restore; | |
114 | ||
115 | /* The name of the register group containing this register, or NULL | |
116 | if the group should be automatically determined from the | |
117 | register's type. If this is "general", "float", or "vector", the | |
118 | corresponding "info" command should display this register's | |
119 | value. It can be an arbitrary string, but should be limited to | |
120 | alphanumeric characters and internal hyphens. Currently other | |
121 | strings are ignored (treated as NULL). */ | |
122 | char *group; | |
123 | ||
124 | /* The size of the register, in bits. */ | |
125 | int bitsize; | |
126 | ||
127 | /* The type of the register. This string corresponds to either | |
128 | a named type from the target description or a predefined | |
129 | type from GDB. */ | |
130 | char *type; | |
131 | ||
132 | /* The target-described type corresponding to TYPE, if found. */ | |
ad068eab | 133 | struct tdesc_type *tdesc_type; |
6eb1e6a8 YQ |
134 | |
135 | void accept (tdesc_element_visitor &v) const override | |
136 | { | |
137 | v.visit (this); | |
138 | } | |
139 | ||
27d41eac YQ |
140 | bool operator== (const tdesc_reg &other) const |
141 | { | |
142 | return (streq (name, other.name) | |
143 | && target_regnum == other.target_regnum | |
144 | && save_restore == other.save_restore | |
145 | && bitsize == other.bitsize | |
146 | && (group == other.group || streq (group, other.group)) | |
147 | && streq (type, other.type)); | |
148 | } | |
149 | ||
150 | bool operator!= (const tdesc_reg &other) const | |
151 | { | |
152 | return !(*this == other); | |
153 | } | |
123dc839 DJ |
154 | } *tdesc_reg_p; |
155 | DEF_VEC_P(tdesc_reg_p); | |
156 | ||
157 | /* A named type from a target description. */ | |
ad068eab UW |
158 | |
159 | typedef struct tdesc_type_field | |
160 | { | |
161 | char *name; | |
162 | struct tdesc_type *type; | |
81516450 DE |
163 | /* For non-enum-values, either both are -1 (non-bitfield), or both are |
164 | not -1 (bitfield). For enum values, start is the value (which could be | |
165 | -1), end is -1. */ | |
f5dff777 | 166 | int start, end; |
ad068eab UW |
167 | } tdesc_type_field; |
168 | DEF_VEC_O(tdesc_type_field); | |
169 | ||
52059ffd TT |
170 | enum tdesc_type_kind |
171 | { | |
172 | /* Predefined types. */ | |
81516450 | 173 | TDESC_TYPE_BOOL, |
52059ffd TT |
174 | TDESC_TYPE_INT8, |
175 | TDESC_TYPE_INT16, | |
176 | TDESC_TYPE_INT32, | |
177 | TDESC_TYPE_INT64, | |
178 | TDESC_TYPE_INT128, | |
179 | TDESC_TYPE_UINT8, | |
180 | TDESC_TYPE_UINT16, | |
181 | TDESC_TYPE_UINT32, | |
182 | TDESC_TYPE_UINT64, | |
183 | TDESC_TYPE_UINT128, | |
184 | TDESC_TYPE_CODE_PTR, | |
185 | TDESC_TYPE_DATA_PTR, | |
186 | TDESC_TYPE_IEEE_SINGLE, | |
187 | TDESC_TYPE_IEEE_DOUBLE, | |
188 | TDESC_TYPE_ARM_FPA_EXT, | |
189 | TDESC_TYPE_I387_EXT, | |
190 | ||
191 | /* Types defined by a target feature. */ | |
192 | TDESC_TYPE_VECTOR, | |
193 | TDESC_TYPE_STRUCT, | |
194 | TDESC_TYPE_UNION, | |
81516450 DE |
195 | TDESC_TYPE_FLAGS, |
196 | TDESC_TYPE_ENUM | |
52059ffd TT |
197 | }; |
198 | ||
6eb1e6a8 | 199 | typedef struct tdesc_type : tdesc_element |
ad068eab | 200 | { |
72ddacb7 YQ |
201 | tdesc_type (const char *name_, enum tdesc_type_kind kind_) |
202 | : name (xstrdup (name_)), kind (kind_) | |
203 | { | |
204 | memset (&u, 0, sizeof (u)); | |
205 | } | |
206 | ||
6eb1e6a8 | 207 | virtual ~tdesc_type () |
72ddacb7 YQ |
208 | { |
209 | switch (kind) | |
210 | { | |
211 | case TDESC_TYPE_STRUCT: | |
212 | case TDESC_TYPE_UNION: | |
213 | case TDESC_TYPE_FLAGS: | |
214 | case TDESC_TYPE_ENUM: | |
215 | { | |
216 | struct tdesc_type_field *f; | |
217 | int ix; | |
218 | ||
219 | for (ix = 0; | |
220 | VEC_iterate (tdesc_type_field, u.u.fields, ix, f); | |
221 | ix++) | |
222 | xfree (f->name); | |
223 | ||
224 | VEC_free (tdesc_type_field, u.u.fields); | |
225 | } | |
226 | break; | |
227 | ||
228 | default: | |
229 | break; | |
230 | } | |
231 | xfree ((char *) name); | |
232 | } | |
d6541620 YQ |
233 | |
234 | DISABLE_COPY_AND_ASSIGN (tdesc_type); | |
72ddacb7 | 235 | |
a121b7c1 PA |
236 | /* The name of this type. If this type is a built-in type, this is |
237 | a pointer to a constant string. Otherwise, it's a | |
238 | malloc-allocated string (and thus must be freed). */ | |
239 | const char *name; | |
ad068eab UW |
240 | |
241 | /* Identify the kind of this type. */ | |
52059ffd | 242 | enum tdesc_type_kind kind; |
ad068eab UW |
243 | |
244 | /* Kind-specific data. */ | |
245 | union | |
246 | { | |
247 | /* Vector type. */ | |
248 | struct | |
249 | { | |
250 | struct tdesc_type *type; | |
251 | int count; | |
252 | } v; | |
253 | ||
81516450 | 254 | /* Struct, union, flags, or enum type. */ |
ad068eab UW |
255 | struct |
256 | { | |
257 | VEC(tdesc_type_field) *fields; | |
54157a25 | 258 | int size; |
ad068eab UW |
259 | } u; |
260 | } u; | |
6eb1e6a8 YQ |
261 | |
262 | void accept (tdesc_element_visitor &v) const override | |
263 | { | |
264 | v.visit (this); | |
265 | } | |
266 | ||
27d41eac YQ |
267 | bool operator== (const tdesc_type &other) const |
268 | { | |
269 | return (streq (name, other.name) && kind == other.kind); | |
270 | } | |
271 | ||
272 | bool operator!= (const tdesc_type &other) const | |
273 | { | |
274 | return !(*this == other); | |
275 | } | |
ad068eab UW |
276 | } *tdesc_type_p; |
277 | DEF_VEC_P(tdesc_type_p); | |
123dc839 DJ |
278 | |
279 | /* A feature from a target description. Each feature is a collection | |
280 | of other elements, e.g. registers and types. */ | |
281 | ||
6eb1e6a8 | 282 | typedef struct tdesc_feature : tdesc_element |
123dc839 | 283 | { |
72ddacb7 YQ |
284 | tdesc_feature (const char *name_) |
285 | : name (xstrdup (name_)) | |
286 | {} | |
287 | ||
6eb1e6a8 | 288 | virtual ~tdesc_feature () |
72ddacb7 YQ |
289 | { |
290 | struct tdesc_reg *reg; | |
291 | struct tdesc_type *type; | |
292 | int ix; | |
293 | ||
294 | for (ix = 0; VEC_iterate (tdesc_reg_p, registers, ix, reg); ix++) | |
295 | delete reg; | |
296 | VEC_free (tdesc_reg_p, registers); | |
297 | ||
298 | for (ix = 0; VEC_iterate (tdesc_type_p, types, ix, type); ix++) | |
299 | delete type; | |
300 | VEC_free (tdesc_type_p, types); | |
301 | ||
302 | xfree (name); | |
303 | } | |
304 | ||
d6541620 | 305 | DISABLE_COPY_AND_ASSIGN (tdesc_feature); |
72ddacb7 | 306 | |
123dc839 DJ |
307 | /* The name of this feature. It may be recognized by the architecture |
308 | support code. */ | |
309 | char *name; | |
310 | ||
311 | /* The registers associated with this feature. */ | |
72ddacb7 | 312 | VEC(tdesc_reg_p) *registers = NULL; |
123dc839 DJ |
313 | |
314 | /* The types associated with this feature. */ | |
72ddacb7 | 315 | VEC(tdesc_type_p) *types = NULL; |
6eb1e6a8 YQ |
316 | |
317 | void accept (tdesc_element_visitor &v) const override | |
318 | { | |
25aa13e5 | 319 | v.visit_pre (this); |
6eb1e6a8 YQ |
320 | |
321 | struct tdesc_type *type; | |
322 | ||
323 | for (int ix = 0; | |
324 | VEC_iterate (tdesc_type_p, types, ix, type); | |
325 | ix++) | |
326 | type->accept (v); | |
327 | ||
328 | struct tdesc_reg *reg; | |
329 | ||
330 | for (int ix = 0; | |
331 | VEC_iterate (tdesc_reg_p, registers, ix, reg); | |
332 | ix++) | |
333 | reg->accept (v); | |
334 | ||
6eb1e6a8 | 335 | |
25aa13e5 YQ |
336 | v.visit_post (this); |
337 | } | |
27d41eac YQ |
338 | |
339 | bool operator== (const tdesc_feature &other) const | |
340 | { | |
341 | if (strcmp (name, other.name) != 0) | |
342 | return false; | |
343 | ||
344 | if (VEC_length (tdesc_reg_p, registers) | |
345 | != VEC_length (tdesc_reg_p, other.registers)) | |
346 | return false; | |
347 | ||
348 | struct tdesc_reg *reg; | |
349 | ||
350 | for (int ix = 0; | |
351 | VEC_iterate (tdesc_reg_p, registers, ix, reg); | |
352 | ix++) | |
353 | { | |
354 | tdesc_reg *reg2 | |
355 | = VEC_index (tdesc_reg_p, other.registers, ix); | |
356 | ||
357 | if (reg != reg2 && *reg != *reg2) | |
358 | return false; | |
359 | } | |
360 | ||
361 | if (VEC_length (tdesc_type_p, types) | |
362 | != VEC_length (tdesc_type_p, other.types)) | |
363 | return false; | |
364 | ||
365 | tdesc_type *type; | |
366 | ||
367 | for (int ix = 0; | |
368 | VEC_iterate (tdesc_type_p, types, ix, type); | |
369 | ix++) | |
370 | { | |
371 | tdesc_type *type2 | |
372 | = VEC_index (tdesc_type_p, other.types, ix); | |
373 | ||
374 | if (type != type2 && *type != *type2) | |
375 | return false; | |
376 | } | |
377 | ||
378 | return true; | |
379 | } | |
380 | ||
381 | bool operator!= (const tdesc_feature &other) const | |
382 | { | |
383 | return !(*this == other); | |
384 | } | |
385 | ||
123dc839 DJ |
386 | } *tdesc_feature_p; |
387 | DEF_VEC_P(tdesc_feature_p); | |
388 | ||
389 | /* A target description. */ | |
390 | ||
6eb1e6a8 | 391 | struct target_desc : tdesc_element |
424163ea | 392 | { |
b468ff4c YQ |
393 | target_desc () |
394 | {} | |
395 | ||
6eb1e6a8 | 396 | virtual ~target_desc () |
b468ff4c YQ |
397 | { |
398 | struct tdesc_feature *feature; | |
b468ff4c YQ |
399 | int ix; |
400 | ||
401 | for (ix = 0; | |
402 | VEC_iterate (tdesc_feature_p, features, ix, feature); | |
403 | ix++) | |
404 | delete feature; | |
405 | VEC_free (tdesc_feature_p, features); | |
b468ff4c YQ |
406 | } |
407 | ||
408 | target_desc (const target_desc &) = delete; | |
409 | void operator= (const target_desc &) = delete; | |
410 | ||
23181151 | 411 | /* The architecture reported by the target, if any. */ |
b468ff4c | 412 | const struct bfd_arch_info *arch = NULL; |
23181151 | 413 | |
08d16641 PA |
414 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
415 | otherwise. */ | |
b468ff4c | 416 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 417 | |
e35359c5 | 418 | /* The list of compatible architectures reported by the target. */ |
40e2a983 | 419 | std::vector<const bfd_arch_info *> compatible; |
e35359c5 | 420 | |
29709017 | 421 | /* Any architecture-specific properties specified by the target. */ |
129c10bc | 422 | std::vector<property> properties; |
123dc839 DJ |
423 | |
424 | /* The features associated with this target. */ | |
b468ff4c | 425 | VEC(tdesc_feature_p) *features = NULL; |
6eb1e6a8 YQ |
426 | |
427 | void accept (tdesc_element_visitor &v) const override | |
428 | { | |
429 | v.visit_pre (this); | |
430 | ||
431 | struct tdesc_feature *feature; | |
432 | ||
433 | for (int ix = 0; | |
434 | VEC_iterate (tdesc_feature_p, features, ix, feature); | |
435 | ix++) | |
436 | feature->accept (v); | |
437 | ||
438 | v.visit_post (this); | |
439 | } | |
27d41eac YQ |
440 | |
441 | bool operator== (const target_desc &other) const | |
442 | { | |
443 | if (arch != other.arch) | |
444 | return false; | |
445 | ||
446 | if (osabi != other.osabi) | |
447 | return false; | |
448 | ||
449 | if (VEC_length (tdesc_feature_p, features) | |
450 | != VEC_length (tdesc_feature_p, other.features)) | |
451 | return false; | |
452 | ||
453 | struct tdesc_feature *feature; | |
454 | ||
455 | for (int ix = 0; | |
456 | VEC_iterate (tdesc_feature_p, features, ix, feature); | |
457 | ix++) | |
458 | { | |
459 | struct tdesc_feature *feature2 | |
460 | = VEC_index (tdesc_feature_p, other.features, ix); | |
461 | ||
462 | if (feature != feature2 && *feature != *feature2) | |
463 | return false; | |
464 | } | |
465 | ||
466 | return true; | |
467 | } | |
468 | ||
469 | bool operator!= (const target_desc &other) const | |
470 | { | |
471 | return !(*this == other); | |
472 | } | |
123dc839 DJ |
473 | }; |
474 | ||
475 | /* Per-architecture data associated with a target description. The | |
476 | target description may be shared by multiple architectures, but | |
477 | this data is private to one gdbarch. */ | |
478 | ||
ad068eab UW |
479 | typedef struct tdesc_arch_reg |
480 | { | |
481 | struct tdesc_reg *reg; | |
482 | struct type *type; | |
483 | } tdesc_arch_reg; | |
484 | DEF_VEC_O(tdesc_arch_reg); | |
485 | ||
123dc839 DJ |
486 | struct tdesc_arch_data |
487 | { | |
ad068eab | 488 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
489 | During initialization of the gdbarch this list is used to store |
490 | registers which the architecture assigns a fixed register number. | |
491 | Registers which are NULL in this array, or off the end, are | |
492 | treated as zero-sized and nameless (i.e. placeholders in the | |
493 | numbering). */ | |
ad068eab | 494 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
495 | |
496 | /* Functions which report the register name, type, and reggroups for | |
497 | pseudo-registers. */ | |
498 | gdbarch_register_name_ftype *pseudo_register_name; | |
499 | gdbarch_register_type_ftype *pseudo_register_type; | |
500 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
501 | }; |
502 | ||
6ecd4729 PA |
503 | /* Info about an inferior's target description. There's one of these |
504 | for each inferior. */ | |
424163ea | 505 | |
6ecd4729 PA |
506 | struct target_desc_info |
507 | { | |
508 | /* A flag indicating that a description has already been fetched | |
509 | from the target, so it should not be queried again. */ | |
510 | ||
511 | int fetched; | |
424163ea | 512 | |
6ecd4729 PA |
513 | /* The description fetched from the target, or NULL if the target |
514 | did not supply any description. Only valid when | |
515 | target_desc_fetched is set. Only the description initialization | |
516 | code should access this; normally, the description should be | |
517 | accessed through the gdbarch object. */ | |
424163ea | 518 | |
6ecd4729 | 519 | const struct target_desc *tdesc; |
424163ea | 520 | |
6ecd4729 PA |
521 | /* The filename to read a target description from, as set by "set |
522 | tdesc filename ..." */ | |
424163ea | 523 | |
6ecd4729 PA |
524 | char *filename; |
525 | }; | |
23181151 | 526 | |
6ecd4729 PA |
527 | /* Get the inferior INF's target description info, allocating one on |
528 | the stop if necessary. */ | |
23181151 | 529 | |
6ecd4729 PA |
530 | static struct target_desc_info * |
531 | get_tdesc_info (struct inferior *inf) | |
532 | { | |
533 | if (inf->tdesc_info == NULL) | |
534 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
535 | return inf->tdesc_info; | |
536 | } | |
23181151 | 537 | |
123dc839 DJ |
538 | /* A handle for architecture-specific data associated with the |
539 | target description (see struct tdesc_arch_data). */ | |
540 | ||
541 | static struct gdbarch_data *tdesc_data; | |
542 | ||
6ecd4729 PA |
543 | /* See target-descriptions.h. */ |
544 | ||
545 | int | |
546 | target_desc_info_from_user_p (struct target_desc_info *info) | |
547 | { | |
548 | return info != NULL && info->filename != NULL; | |
549 | } | |
550 | ||
551 | /* See target-descriptions.h. */ | |
552 | ||
553 | void | |
554 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
555 | { | |
556 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
557 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
558 | ||
559 | dest->fetched = src->fetched; | |
560 | dest->tdesc = src->tdesc; | |
561 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
562 | } | |
563 | ||
564 | /* See target-descriptions.h. */ | |
565 | ||
566 | void | |
567 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
568 | { | |
569 | if (tdesc_info != NULL) | |
570 | { | |
571 | xfree (tdesc_info->filename); | |
572 | xfree (tdesc_info); | |
573 | } | |
574 | } | |
575 | ||
576 | /* Convenience helper macros. */ | |
577 | ||
578 | #define target_desc_fetched \ | |
579 | get_tdesc_info (current_inferior ())->fetched | |
580 | #define current_target_desc \ | |
581 | get_tdesc_info (current_inferior ())->tdesc | |
582 | #define target_description_filename \ | |
583 | get_tdesc_info (current_inferior ())->filename | |
584 | ||
585 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
586 | ||
587 | static char *tdesc_filename_cmd_string; | |
588 | ||
424163ea DJ |
589 | /* Fetch the current target's description, and switch the current |
590 | architecture to one which incorporates that description. */ | |
591 | ||
592 | void | |
593 | target_find_description (void) | |
594 | { | |
595 | /* If we've already fetched a description from the target, don't do | |
596 | it again. This allows a target to fetch the description early, | |
597 | during its to_open or to_create_inferior, if it needs extra | |
598 | information about the target to initialize. */ | |
599 | if (target_desc_fetched) | |
600 | return; | |
601 | ||
602 | /* The current architecture should not have any target description | |
603 | specified. It should have been cleared, e.g. when we | |
604 | disconnected from the previous target. */ | |
f5656ead | 605 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 606 | |
23181151 DJ |
607 | /* First try to fetch an XML description from the user-specified |
608 | file. */ | |
609 | current_target_desc = NULL; | |
610 | if (target_description_filename != NULL | |
611 | && *target_description_filename != '\0') | |
612 | current_target_desc | |
613 | = file_read_description_xml (target_description_filename); | |
614 | ||
615 | /* Next try to read the description from the current target using | |
616 | target objects. */ | |
617 | if (current_target_desc == NULL) | |
618 | current_target_desc = target_read_description_xml (¤t_target); | |
619 | ||
620 | /* If that failed try a target-specific hook. */ | |
621 | if (current_target_desc == NULL) | |
622 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
623 | |
624 | /* If a non-NULL description was returned, then update the current | |
625 | architecture. */ | |
626 | if (current_target_desc) | |
627 | { | |
628 | struct gdbarch_info info; | |
629 | ||
630 | gdbarch_info_init (&info); | |
631 | info.target_desc = current_target_desc; | |
632 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
633 | warning (_("Architecture rejected target-supplied description")); |
634 | else | |
635 | { | |
636 | struct tdesc_arch_data *data; | |
637 | ||
19ba03f4 SM |
638 | data = ((struct tdesc_arch_data *) |
639 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 640 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 641 | && data->arch_regs == NULL) |
123dc839 DJ |
642 | warning (_("Target-supplied registers are not supported " |
643 | "by the current architecture")); | |
644 | } | |
424163ea DJ |
645 | } |
646 | ||
647 | /* Now that we know this description is usable, record that we | |
648 | fetched it. */ | |
649 | target_desc_fetched = 1; | |
650 | } | |
651 | ||
652 | /* Discard any description fetched from the current target, and switch | |
653 | the current architecture to one with no target description. */ | |
654 | ||
655 | void | |
656 | target_clear_description (void) | |
657 | { | |
658 | struct gdbarch_info info; | |
659 | ||
660 | if (!target_desc_fetched) | |
661 | return; | |
662 | ||
663 | target_desc_fetched = 0; | |
664 | current_target_desc = NULL; | |
665 | ||
666 | gdbarch_info_init (&info); | |
667 | if (!gdbarch_update_p (info)) | |
668 | internal_error (__FILE__, __LINE__, | |
669 | _("Could not remove target-supplied description")); | |
670 | } | |
671 | ||
672 | /* Return the global current target description. This should only be | |
673 | used by gdbarch initialization code; most access should be through | |
674 | an existing gdbarch. */ | |
675 | ||
676 | const struct target_desc * | |
677 | target_current_description (void) | |
678 | { | |
679 | if (target_desc_fetched) | |
680 | return current_target_desc; | |
681 | ||
682 | return NULL; | |
683 | } | |
e35359c5 UW |
684 | |
685 | /* Return non-zero if this target description is compatible | |
686 | with the given BFD architecture. */ | |
687 | ||
688 | int | |
689 | tdesc_compatible_p (const struct target_desc *target_desc, | |
690 | const struct bfd_arch_info *arch) | |
691 | { | |
40e2a983 | 692 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
693 | { |
694 | if (compat == arch | |
695 | || arch->compatible (arch, compat) | |
696 | || compat->compatible (compat, arch)) | |
697 | return 1; | |
698 | } | |
699 | ||
700 | return 0; | |
701 | } | |
23181151 DJ |
702 | \f |
703 | ||
123dc839 | 704 | /* Direct accessors for target descriptions. */ |
424163ea | 705 | |
29709017 DJ |
706 | /* Return the string value of a property named KEY, or NULL if the |
707 | property was not specified. */ | |
708 | ||
709 | const char * | |
710 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
711 | { | |
129c10bc SM |
712 | for (const property &prop : target_desc->properties) |
713 | if (prop.key == key) | |
714 | return prop.value.c_str (); | |
29709017 DJ |
715 | |
716 | return NULL; | |
717 | } | |
718 | ||
23181151 DJ |
719 | /* Return the BFD architecture associated with this target |
720 | description, or NULL if no architecture was specified. */ | |
721 | ||
722 | const struct bfd_arch_info * | |
723 | tdesc_architecture (const struct target_desc *target_desc) | |
724 | { | |
725 | return target_desc->arch; | |
726 | } | |
08d16641 PA |
727 | |
728 | /* Return the OSABI associated with this target description, or | |
729 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
730 | ||
731 | enum gdb_osabi | |
732 | tdesc_osabi (const struct target_desc *target_desc) | |
733 | { | |
734 | return target_desc->osabi; | |
735 | } | |
736 | ||
23181151 DJ |
737 | \f |
738 | ||
123dc839 DJ |
739 | /* Return 1 if this target description includes any registers. */ |
740 | ||
741 | int | |
742 | tdesc_has_registers (const struct target_desc *target_desc) | |
743 | { | |
744 | int ix; | |
745 | struct tdesc_feature *feature; | |
746 | ||
747 | if (target_desc == NULL) | |
748 | return 0; | |
749 | ||
750 | for (ix = 0; | |
751 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
752 | ix++) | |
753 | if (! VEC_empty (tdesc_reg_p, feature->registers)) | |
754 | return 1; | |
755 | ||
756 | return 0; | |
757 | } | |
758 | ||
759 | /* Return the feature with the given name, if present, or NULL if | |
760 | the named feature is not found. */ | |
761 | ||
762 | const struct tdesc_feature * | |
763 | tdesc_find_feature (const struct target_desc *target_desc, | |
764 | const char *name) | |
765 | { | |
766 | int ix; | |
767 | struct tdesc_feature *feature; | |
768 | ||
769 | for (ix = 0; | |
770 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
771 | ix++) | |
772 | if (strcmp (feature->name, name) == 0) | |
773 | return feature; | |
774 | ||
775 | return NULL; | |
776 | } | |
777 | ||
778 | /* Return the name of FEATURE. */ | |
779 | ||
780 | const char * | |
781 | tdesc_feature_name (const struct tdesc_feature *feature) | |
782 | { | |
783 | return feature->name; | |
784 | } | |
785 | ||
ad068eab UW |
786 | /* Predefined types. */ |
787 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 788 | { |
81516450 | 789 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
790 | { "int8", TDESC_TYPE_INT8 }, |
791 | { "int16", TDESC_TYPE_INT16 }, | |
792 | { "int32", TDESC_TYPE_INT32 }, | |
793 | { "int64", TDESC_TYPE_INT64 }, | |
794 | { "int128", TDESC_TYPE_INT128 }, | |
795 | { "uint8", TDESC_TYPE_UINT8 }, | |
796 | { "uint16", TDESC_TYPE_UINT16 }, | |
797 | { "uint32", TDESC_TYPE_UINT32 }, | |
798 | { "uint64", TDESC_TYPE_UINT64 }, | |
799 | { "uint128", TDESC_TYPE_UINT128 }, | |
800 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
801 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
802 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
803 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 804 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 805 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 806 | }; |
81adfced | 807 | |
81516450 DE |
808 | /* Lookup a predefined type. */ |
809 | ||
810 | static struct tdesc_type * | |
811 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
812 | { | |
798a7429 | 813 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
81516450 DE |
814 | if (tdesc_predefined_types[ix].kind == kind) |
815 | return &tdesc_predefined_types[ix]; | |
816 | ||
817 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
818 | } | |
819 | ||
f49ff000 | 820 | /* See arch/tdesc.h. */ |
123dc839 | 821 | |
ad068eab | 822 | struct tdesc_type * |
123dc839 DJ |
823 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
824 | { | |
825 | int ix; | |
ad068eab | 826 | struct tdesc_type *type; |
123dc839 DJ |
827 | |
828 | /* First try target-defined types. */ | |
ad068eab UW |
829 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
830 | if (strcmp (type->name, id) == 0) | |
831 | return type; | |
123dc839 | 832 | |
81adfced DJ |
833 | /* Next try the predefined types. */ |
834 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
835 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 836 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
837 | |
838 | return NULL; | |
839 | } | |
ad068eab | 840 | |
9fd3625f L |
841 | /* Lookup type associated with ID. */ |
842 | ||
843 | struct type * | |
844 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
845 | { | |
846 | struct tdesc_arch_reg *reg; | |
847 | struct tdesc_arch_data *data; | |
848 | int i, num_regs; | |
849 | ||
19ba03f4 | 850 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
9fd3625f L |
851 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); |
852 | for (i = 0; i < num_regs; i++) | |
853 | { | |
854 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); | |
855 | if (reg->reg | |
856 | && reg->reg->tdesc_type | |
857 | && reg->type | |
858 | && strcmp (id, reg->reg->tdesc_type->name) == 0) | |
859 | return reg->type; | |
860 | } | |
861 | ||
862 | return NULL; | |
863 | } | |
864 | ||
ad068eab UW |
865 | /* Construct, if necessary, and return the GDB type implementing target |
866 | type TDESC_TYPE for architecture GDBARCH. */ | |
867 | ||
868 | static struct type * | |
869 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
870 | { | |
9fd3625f L |
871 | struct type *type; |
872 | ||
ad068eab UW |
873 | switch (tdesc_type->kind) |
874 | { | |
875 | /* Predefined types. */ | |
81516450 DE |
876 | case TDESC_TYPE_BOOL: |
877 | return builtin_type (gdbarch)->builtin_bool; | |
878 | ||
ad068eab | 879 | case TDESC_TYPE_INT8: |
df4df182 | 880 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
881 | |
882 | case TDESC_TYPE_INT16: | |
df4df182 | 883 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
884 | |
885 | case TDESC_TYPE_INT32: | |
df4df182 | 886 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
887 | |
888 | case TDESC_TYPE_INT64: | |
df4df182 | 889 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
890 | |
891 | case TDESC_TYPE_INT128: | |
df4df182 | 892 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
893 | |
894 | case TDESC_TYPE_UINT8: | |
df4df182 | 895 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
896 | |
897 | case TDESC_TYPE_UINT16: | |
df4df182 | 898 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
899 | |
900 | case TDESC_TYPE_UINT32: | |
df4df182 | 901 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
902 | |
903 | case TDESC_TYPE_UINT64: | |
df4df182 | 904 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
905 | |
906 | case TDESC_TYPE_UINT128: | |
df4df182 | 907 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
908 | |
909 | case TDESC_TYPE_CODE_PTR: | |
910 | return builtin_type (gdbarch)->builtin_func_ptr; | |
911 | ||
912 | case TDESC_TYPE_DATA_PTR: | |
913 | return builtin_type (gdbarch)->builtin_data_ptr; | |
914 | ||
9fd3625f L |
915 | default: |
916 | break; | |
917 | } | |
918 | ||
919 | type = tdesc_find_type (gdbarch, tdesc_type->name); | |
920 | if (type) | |
921 | return type; | |
922 | ||
923 | switch (tdesc_type->kind) | |
924 | { | |
ad068eab | 925 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 926 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 927 | floatformats_ieee_single); |
ad068eab UW |
928 | |
929 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 930 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 931 | floatformats_ieee_double); |
ad068eab UW |
932 | |
933 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 934 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 935 | floatformats_arm_ext); |
ad068eab | 936 | |
9fd3625f L |
937 | case TDESC_TYPE_I387_EXT: |
938 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
939 | floatformats_i387_ext); | |
940 | ||
ad068eab UW |
941 | /* Types defined by a target feature. */ |
942 | case TDESC_TYPE_VECTOR: | |
943 | { | |
944 | struct type *type, *field_type; | |
945 | ||
946 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
947 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
948 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
949 | ||
950 | return type; | |
951 | } | |
952 | ||
f5dff777 DJ |
953 | case TDESC_TYPE_STRUCT: |
954 | { | |
955 | struct type *type, *field_type; | |
956 | struct tdesc_type_field *f; | |
957 | int ix; | |
958 | ||
959 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); | |
960 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
961 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
962 | ||
963 | for (ix = 0; | |
964 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
965 | ix++) | |
966 | { | |
81516450 | 967 | if (f->start != -1 && f->end != -1) |
f5dff777 DJ |
968 | { |
969 | /* Bitfield. */ | |
970 | struct field *fld; | |
971 | struct type *field_type; | |
972 | int bitsize, total_size; | |
973 | ||
81516450 | 974 | /* This invariant should be preserved while creating types. */ |
f5dff777 | 975 | gdb_assert (tdesc_type->u.u.size != 0); |
81516450 DE |
976 | if (f->type != NULL) |
977 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
978 | else if (tdesc_type->u.u.size > 4) | |
f5dff777 DJ |
979 | field_type = builtin_type (gdbarch)->builtin_uint64; |
980 | else | |
981 | field_type = builtin_type (gdbarch)->builtin_uint32; | |
982 | ||
983 | fld = append_composite_type_field_raw (type, xstrdup (f->name), | |
984 | field_type); | |
985 | ||
986 | /* For little-endian, BITPOS counts from the LSB of | |
987 | the structure and marks the LSB of the field. For | |
988 | big-endian, BITPOS counts from the MSB of the | |
989 | structure and marks the MSB of the field. Either | |
990 | way, it is the number of bits to the "left" of the | |
991 | field. To calculate this in big-endian, we need | |
992 | the total size of the structure. */ | |
993 | bitsize = f->end - f->start + 1; | |
994 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; | |
995 | if (gdbarch_bits_big_endian (gdbarch)) | |
f41f5e61 | 996 | SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize); |
f5dff777 | 997 | else |
f41f5e61 | 998 | SET_FIELD_BITPOS (fld[0], f->start); |
f5dff777 DJ |
999 | FIELD_BITSIZE (fld[0]) = bitsize; |
1000 | } | |
1001 | else | |
1002 | { | |
81516450 | 1003 | gdb_assert (f->start == -1 && f->end == -1); |
f5dff777 DJ |
1004 | field_type = tdesc_gdb_type (gdbarch, f->type); |
1005 | append_composite_type_field (type, xstrdup (f->name), | |
1006 | field_type); | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | if (tdesc_type->u.u.size != 0) | |
1011 | TYPE_LENGTH (type) = tdesc_type->u.u.size; | |
1012 | return type; | |
1013 | } | |
1014 | ||
ad068eab UW |
1015 | case TDESC_TYPE_UNION: |
1016 | { | |
1017 | struct type *type, *field_type; | |
1018 | struct tdesc_type_field *f; | |
1019 | int ix; | |
1020 | ||
e9bb382b | 1021 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
ad068eab UW |
1022 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
1023 | ||
1024 | for (ix = 0; | |
1025 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
1026 | ix++) | |
1027 | { | |
1028 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
1029 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
1030 | ||
f5dff777 | 1031 | /* If any of the children of a union are vectors, flag the |
ad068eab UW |
1032 | union as a vector also. This allows e.g. a union of two |
1033 | vector types to show up automatically in "info vector". */ | |
1034 | if (TYPE_VECTOR (field_type)) | |
1035 | TYPE_VECTOR (type) = 1; | |
1036 | } | |
f5dff777 DJ |
1037 | return type; |
1038 | } | |
1039 | ||
1040 | case TDESC_TYPE_FLAGS: | |
1041 | { | |
81516450 | 1042 | struct tdesc_type_field *f; |
f5dff777 DJ |
1043 | int ix; |
1044 | ||
3494b66d | 1045 | type = arch_flags_type (gdbarch, tdesc_type->name, |
77b7c781 | 1046 | tdesc_type->u.u.size * TARGET_CHAR_BIT); |
81516450 DE |
1047 | for (ix = 0; |
1048 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
1049 | ix++) | |
1050 | { | |
1051 | struct type *field_type; | |
1052 | int bitsize = f->end - f->start + 1; | |
1053 | ||
1054 | gdb_assert (f->type != NULL); | |
1055 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
1056 | append_flags_type_field (type, f->start, bitsize, | |
1057 | field_type, f->name); | |
1058 | } | |
1059 | ||
1060 | return type; | |
1061 | } | |
1062 | ||
1063 | case TDESC_TYPE_ENUM: | |
1064 | { | |
1065 | struct tdesc_type_field *f; | |
1066 | int ix; | |
1067 | ||
1068 | type = arch_type (gdbarch, TYPE_CODE_ENUM, | |
77b7c781 UW |
1069 | tdesc_type->u.u.size * TARGET_CHAR_BIT, |
1070 | tdesc_type->name); | |
81516450 | 1071 | TYPE_UNSIGNED (type) = 1; |
f5dff777 | 1072 | for (ix = 0; |
81516450 | 1073 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
f5dff777 | 1074 | ix++) |
81516450 DE |
1075 | { |
1076 | struct field *fld | |
1077 | = append_composite_type_field_raw (type, xstrdup (f->name), | |
1078 | NULL); | |
1079 | ||
1080 | SET_FIELD_BITPOS (fld[0], f->start); | |
1081 | } | |
ad068eab UW |
1082 | |
1083 | return type; | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | internal_error (__FILE__, __LINE__, | |
1088 | "Type \"%s\" has an unknown kind %d", | |
1089 | tdesc_type->name, tdesc_type->kind); | |
1090 | } | |
123dc839 DJ |
1091 | \f |
1092 | ||
1093 | /* Support for registers from target descriptions. */ | |
1094 | ||
1095 | /* Construct the per-gdbarch data. */ | |
1096 | ||
1097 | static void * | |
1098 | tdesc_data_init (struct obstack *obstack) | |
1099 | { | |
1100 | struct tdesc_arch_data *data; | |
1101 | ||
1102 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
1103 | return data; | |
1104 | } | |
1105 | ||
1106 | /* Similar, but for the temporary copy used during architecture | |
1107 | initialization. */ | |
1108 | ||
1109 | struct tdesc_arch_data * | |
1110 | tdesc_data_alloc (void) | |
1111 | { | |
41bf6aca | 1112 | return XCNEW (struct tdesc_arch_data); |
123dc839 DJ |
1113 | } |
1114 | ||
1115 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
1116 | to be used (for instance if it was unsuitable for the | |
1117 | architecture). */ | |
1118 | ||
1119 | void | |
1120 | tdesc_data_cleanup (void *data_untyped) | |
1121 | { | |
19ba03f4 | 1122 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 1123 | |
ad068eab | 1124 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
1125 | xfree (data); |
1126 | } | |
1127 | ||
1128 | /* Search FEATURE for a register named NAME. */ | |
1129 | ||
7cc46491 DJ |
1130 | static struct tdesc_reg * |
1131 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
1132 | const char *name) | |
123dc839 DJ |
1133 | { |
1134 | int ixr; | |
1135 | struct tdesc_reg *reg; | |
1136 | ||
1137 | for (ixr = 0; | |
1138 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1139 | ixr++) | |
1140 | if (strcasecmp (reg->name, name) == 0) | |
7cc46491 | 1141 | return reg; |
123dc839 | 1142 | |
7cc46491 DJ |
1143 | return NULL; |
1144 | } | |
1145 | ||
1146 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
1147 | ||
1148 | int | |
1149 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
1150 | struct tdesc_arch_data *data, | |
1151 | int regno, const char *name) | |
1152 | { | |
ad068eab | 1153 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
1154 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
1155 | ||
1156 | if (reg == NULL) | |
1157 | return 0; | |
1158 | ||
1159 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
1160 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
1161 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
1162 | ||
1163 | arch_reg.reg = reg; | |
1164 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 1165 | return 1; |
123dc839 DJ |
1166 | } |
1167 | ||
58d6951d DJ |
1168 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
1169 | register number to it. */ | |
1170 | ||
1171 | int | |
1172 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
1173 | const char *name) | |
1174 | { | |
1175 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1176 | ||
1177 | if (reg == NULL) | |
1178 | return 0; | |
1179 | ||
1180 | return 1; | |
1181 | } | |
1182 | ||
7cc46491 DJ |
1183 | /* Search FEATURE for a register whose name is in NAMES and assign |
1184 | REGNO to it. */ | |
123dc839 DJ |
1185 | |
1186 | int | |
1187 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
1188 | struct tdesc_arch_data *data, | |
1189 | int regno, const char *const names[]) | |
1190 | { | |
1191 | int i; | |
1192 | ||
1193 | for (i = 0; names[i] != NULL; i++) | |
1194 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
1195 | return 1; | |
1196 | ||
1197 | return 0; | |
1198 | } | |
1199 | ||
7cc46491 DJ |
1200 | /* Search FEATURE for a register named NAME, and return its size in |
1201 | bits. The register must exist. */ | |
1202 | ||
1203 | int | |
1204 | tdesc_register_size (const struct tdesc_feature *feature, | |
1205 | const char *name) | |
1206 | { | |
1207 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1208 | ||
1209 | gdb_assert (reg != NULL); | |
1210 | return reg->bitsize; | |
1211 | } | |
1212 | ||
123dc839 DJ |
1213 | /* Look up a register by its GDB internal register number. */ |
1214 | ||
ad068eab UW |
1215 | static struct tdesc_arch_reg * |
1216 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 1217 | { |
123dc839 DJ |
1218 | struct tdesc_arch_data *data; |
1219 | ||
19ba03f4 | 1220 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab UW |
1221 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
1222 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
1223 | else |
1224 | return NULL; | |
1225 | } | |
1226 | ||
ad068eab UW |
1227 | static struct tdesc_reg * |
1228 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
1229 | { | |
1230 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 1231 | |
ad068eab UW |
1232 | return reg? reg->reg : NULL; |
1233 | } | |
1234 | ||
f8b73d13 DJ |
1235 | /* Return the name of register REGNO, from the target description or |
1236 | from an architecture-provided pseudo_register_name method. */ | |
1237 | ||
1238 | const char * | |
d93859e2 | 1239 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 1240 | { |
d93859e2 UW |
1241 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1242 | int num_regs = gdbarch_num_regs (gdbarch); | |
1243 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
1244 | |
1245 | if (reg != NULL) | |
1246 | return reg->name; | |
1247 | ||
1248 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1249 | { | |
19ba03f4 SM |
1250 | struct tdesc_arch_data *data |
1251 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1252 | |
123dc839 | 1253 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 1254 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
1255 | } |
1256 | ||
1257 | return ""; | |
1258 | } | |
1259 | ||
58d6951d | 1260 | struct type * |
123dc839 DJ |
1261 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
1262 | { | |
ad068eab UW |
1263 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
1264 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1265 | int num_regs = gdbarch_num_regs (gdbarch); |
1266 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1267 | ||
1268 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1269 | { | |
19ba03f4 SM |
1270 | struct tdesc_arch_data *data |
1271 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1272 | |
123dc839 DJ |
1273 | gdb_assert (data->pseudo_register_type != NULL); |
1274 | return data->pseudo_register_type (gdbarch, regno); | |
1275 | } | |
1276 | ||
1277 | if (reg == NULL) | |
1278 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1279 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1280 | |
ad068eab | 1281 | if (arch_reg->type == NULL) |
123dc839 | 1282 | { |
ad068eab UW |
1283 | /* First check for a predefined or target defined type. */ |
1284 | if (reg->tdesc_type) | |
1285 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
1286 | ||
1287 | /* Next try size-sensitive type shortcuts. */ | |
1288 | else if (strcmp (reg->type, "float") == 0) | |
1289 | { | |
1290 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1291 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1292 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1293 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1294 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1295 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1296 | else | |
1297 | { | |
1298 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1299 | reg->name, reg->bitsize); | |
1300 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1301 | } | |
1302 | } | |
1303 | else if (strcmp (reg->type, "int") == 0) | |
1304 | { | |
1305 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1306 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1307 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1308 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1309 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1310 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1311 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1312 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1313 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1314 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1315 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1316 | /* A bit desperate by this point... */ |
ad068eab UW |
1317 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1318 | else | |
1319 | { | |
1320 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1321 | reg->name, reg->bitsize); | |
1322 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1323 | } | |
1324 | } | |
1325 | ||
1326 | if (arch_reg->type == NULL) | |
1327 | internal_error (__FILE__, __LINE__, | |
1328 | "Register \"%s\" has an unknown type \"%s\"", | |
1329 | reg->name, reg->type); | |
123dc839 | 1330 | } |
123dc839 | 1331 | |
ad068eab | 1332 | return arch_reg->type; |
123dc839 DJ |
1333 | } |
1334 | ||
1335 | static int | |
1336 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1337 | { | |
1338 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1339 | ||
1340 | if (reg != NULL) | |
1341 | return reg->target_regnum; | |
1342 | else | |
1343 | return -1; | |
1344 | } | |
1345 | ||
1346 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
1347 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
1348 | Unlike a gdbarch register_reggroup_p method, this function will |
1349 | return -1 if it does not know; the caller should handle registers | |
1350 | with no specified group. | |
123dc839 DJ |
1351 | |
1352 | Arbitrary strings (other than "general", "float", and "vector") | |
1353 | from the description are not used; they cause the register to be | |
1354 | displayed in "info all-registers" but excluded from "info | |
1355 | registers" et al. The names of containing features are also not | |
1356 | used. This might be extended to display registers in some more | |
1357 | useful groupings. | |
1358 | ||
1359 | The save-restore flag is also implemented here. */ | |
1360 | ||
f8b73d13 DJ |
1361 | int |
1362 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1363 | struct reggroup *reggroup) | |
123dc839 | 1364 | { |
123dc839 DJ |
1365 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1366 | ||
123dc839 DJ |
1367 | if (reg != NULL && reg->group != NULL) |
1368 | { | |
1369 | int general_p = 0, float_p = 0, vector_p = 0; | |
1370 | ||
1371 | if (strcmp (reg->group, "general") == 0) | |
1372 | general_p = 1; | |
1373 | else if (strcmp (reg->group, "float") == 0) | |
1374 | float_p = 1; | |
1375 | else if (strcmp (reg->group, "vector") == 0) | |
1376 | vector_p = 1; | |
1377 | ||
1378 | if (reggroup == float_reggroup) | |
1379 | return float_p; | |
1380 | ||
1381 | if (reggroup == vector_reggroup) | |
1382 | return vector_p; | |
1383 | ||
1384 | if (reggroup == general_reggroup) | |
1385 | return general_p; | |
1386 | } | |
1387 | ||
1388 | if (reg != NULL | |
1389 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1390 | return reg->save_restore; | |
1391 | ||
f8b73d13 DJ |
1392 | return -1; |
1393 | } | |
1394 | ||
1395 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1396 | group specified go to the default reggroup function and are handled | |
1397 | by type. */ | |
1398 | ||
1399 | static int | |
1400 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1401 | struct reggroup *reggroup) | |
1402 | { | |
1403 | int num_regs = gdbarch_num_regs (gdbarch); | |
1404 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1405 | int ret; | |
1406 | ||
1407 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1408 | { | |
19ba03f4 SM |
1409 | struct tdesc_arch_data *data |
1410 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1411 | |
58d6951d DJ |
1412 | if (data->pseudo_register_reggroup_p != NULL) |
1413 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1414 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1415 | } |
1416 | ||
1417 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1418 | if (ret != -1) | |
1419 | return ret; | |
1420 | ||
123dc839 DJ |
1421 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1422 | } | |
1423 | ||
1424 | /* Record architecture-specific functions to call for pseudo-register | |
1425 | support. */ | |
1426 | ||
1427 | void | |
1428 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1429 | gdbarch_register_name_ftype *pseudo_name) | |
1430 | { | |
19ba03f4 SM |
1431 | struct tdesc_arch_data *data |
1432 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1433 | |
1434 | data->pseudo_register_name = pseudo_name; | |
1435 | } | |
1436 | ||
1437 | void | |
1438 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1439 | gdbarch_register_type_ftype *pseudo_type) | |
1440 | { | |
19ba03f4 SM |
1441 | struct tdesc_arch_data *data |
1442 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1443 | |
1444 | data->pseudo_register_type = pseudo_type; | |
1445 | } | |
1446 | ||
1447 | void | |
1448 | set_tdesc_pseudo_register_reggroup_p | |
1449 | (struct gdbarch *gdbarch, | |
1450 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1451 | { | |
19ba03f4 SM |
1452 | struct tdesc_arch_data *data |
1453 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1454 | |
1455 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1456 | } | |
1457 | ||
1458 | /* Update GDBARCH to use the target description for registers. */ | |
1459 | ||
1460 | void | |
1461 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1462 | const struct target_desc *target_desc, |
123dc839 DJ |
1463 | struct tdesc_arch_data *early_data) |
1464 | { | |
1465 | int num_regs = gdbarch_num_regs (gdbarch); | |
c6913b7d | 1466 | int ixf, ixr; |
123dc839 DJ |
1467 | struct tdesc_feature *feature; |
1468 | struct tdesc_reg *reg; | |
1469 | struct tdesc_arch_data *data; | |
ad068eab | 1470 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
1471 | htab_t reg_hash; |
1472 | ||
123dc839 DJ |
1473 | /* We can't use the description for registers if it doesn't describe |
1474 | any. This function should only be called after validating | |
1475 | registers, so the caller should know that registers are | |
1476 | included. */ | |
1477 | gdb_assert (tdesc_has_registers (target_desc)); | |
1478 | ||
19ba03f4 | 1479 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1480 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
1481 | xfree (early_data); |
1482 | ||
1483 | /* Build up a set of all registers, so that we can assign register | |
1484 | numbers where needed. The hash table expands as necessary, so | |
1485 | the initial size is arbitrary. */ | |
1486 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
1487 | for (ixf = 0; | |
1488 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1489 | ixf++) | |
1490 | for (ixr = 0; | |
1491 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1492 | ixr++) | |
1493 | { | |
1494 | void **slot = htab_find_slot (reg_hash, reg, INSERT); | |
1495 | ||
1496 | *slot = reg; | |
1497 | } | |
1498 | ||
1499 | /* Remove any registers which were assigned numbers by the | |
1500 | architecture. */ | |
ad068eab UW |
1501 | for (ixr = 0; |
1502 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); | |
1503 | ixr++) | |
1504 | if (arch_reg->reg) | |
1505 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
1506 | |
1507 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1508 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1509 | Iterate over the features, not the hash table, so that the order |
1510 | matches that in the target description. */ | |
1511 | ||
ad068eab UW |
1512 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1513 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1514 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1515 | for (ixf = 0; |
1516 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1517 | ixf++) | |
1518 | for (ixr = 0; | |
1519 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1520 | ixr++) | |
1521 | if (htab_find (reg_hash, reg) != NULL) | |
1522 | { | |
ad068eab UW |
1523 | new_arch_reg.reg = reg; |
1524 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1525 | num_regs++; |
1526 | } | |
1527 | ||
1528 | htab_delete (reg_hash); | |
1529 | ||
1530 | /* Update the architecture. */ | |
1531 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1532 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1533 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1534 | set_gdbarch_remote_register_number (gdbarch, | |
1535 | tdesc_remote_register_number); | |
1536 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1537 | } | |
1538 | \f | |
1539 | ||
f49ff000 YQ |
1540 | /* See arch/tdesc.h. */ |
1541 | ||
123dc839 DJ |
1542 | void |
1543 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1544 | int regnum, int save_restore, const char *group, | |
1545 | int bitsize, const char *type) | |
1546 | { | |
72ddacb7 YQ |
1547 | tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, |
1548 | group, bitsize, type); | |
123dc839 DJ |
1549 | |
1550 | VEC_safe_push (tdesc_reg_p, feature->registers, reg); | |
1551 | } | |
1552 | ||
f49ff000 YQ |
1553 | /* See arch/tdesc.h. */ |
1554 | ||
ad068eab UW |
1555 | struct tdesc_type * |
1556 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1557 | struct tdesc_type *field_type, int count) | |
1558 | { | |
72ddacb7 | 1559 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_VECTOR); |
ad068eab | 1560 | |
ad068eab UW |
1561 | type->u.v.type = field_type; |
1562 | type->u.v.count = count; | |
1563 | ||
1564 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1565 | return type; | |
1566 | } | |
1567 | ||
f49ff000 YQ |
1568 | /* See arch/tdesc.h. */ |
1569 | ||
f5dff777 DJ |
1570 | struct tdesc_type * |
1571 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
1572 | { | |
72ddacb7 | 1573 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_STRUCT); |
f5dff777 DJ |
1574 | |
1575 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1576 | return type; | |
1577 | } | |
1578 | ||
f49ff000 | 1579 | /* See arch/tdesc.h. */ |
f5dff777 DJ |
1580 | |
1581 | void | |
54157a25 | 1582 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
f5dff777 DJ |
1583 | { |
1584 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1585 | gdb_assert (size > 0); |
f5dff777 DJ |
1586 | type->u.u.size = size; |
1587 | } | |
1588 | ||
f49ff000 YQ |
1589 | /* See arch/tdesc.h. */ |
1590 | ||
ad068eab UW |
1591 | struct tdesc_type * |
1592 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1593 | { | |
72ddacb7 | 1594 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_UNION); |
ad068eab UW |
1595 | |
1596 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1597 | return type; | |
1598 | } | |
1599 | ||
f49ff000 YQ |
1600 | /* See arch/tdesc.h. */ |
1601 | ||
f5dff777 DJ |
1602 | struct tdesc_type * |
1603 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
54157a25 | 1604 | int size) |
f5dff777 | 1605 | { |
72ddacb7 | 1606 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_FLAGS); |
f5dff777 | 1607 | |
54157a25 DE |
1608 | gdb_assert (size > 0); |
1609 | ||
81516450 | 1610 | type->u.u.size = size; |
f5dff777 DJ |
1611 | |
1612 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1613 | return type; | |
1614 | } | |
1615 | ||
81516450 DE |
1616 | struct tdesc_type * |
1617 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
1618 | int size) | |
1619 | { | |
72ddacb7 | 1620 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_ENUM); |
81516450 DE |
1621 | |
1622 | gdb_assert (size > 0); | |
1623 | ||
81516450 DE |
1624 | type->u.u.size = size; |
1625 | ||
1626 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1627 | return type; | |
1628 | } | |
1629 | ||
f49ff000 | 1630 | /* See arch/tdesc.h. */ |
f5dff777 | 1631 | |
ad068eab UW |
1632 | void |
1633 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1634 | struct tdesc_type *field_type) | |
1635 | { | |
1636 | struct tdesc_type_field f = { 0 }; | |
1637 | ||
f5dff777 DJ |
1638 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1639 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab UW |
1640 | |
1641 | f.name = xstrdup (field_name); | |
1642 | f.type = field_type; | |
81516450 DE |
1643 | /* Initialize these values so we know this is not a bit-field |
1644 | when we print-c-tdesc. */ | |
1645 | f.start = -1; | |
1646 | f.end = -1; | |
ad068eab UW |
1647 | |
1648 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1649 | } | |
1650 | ||
f5dff777 | 1651 | void |
81516450 DE |
1652 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
1653 | int start, int end, struct tdesc_type *field_type) | |
f5dff777 DJ |
1654 | { |
1655 | struct tdesc_type_field f = { 0 }; | |
1656 | ||
81516450 DE |
1657 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1658 | || type->kind == TDESC_TYPE_FLAGS); | |
1659 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 DJ |
1660 | |
1661 | f.name = xstrdup (field_name); | |
1662 | f.start = start; | |
1663 | f.end = end; | |
81516450 | 1664 | f.type = field_type; |
f5dff777 DJ |
1665 | |
1666 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1667 | } | |
1668 | ||
f49ff000 | 1669 | /* See arch/tdesc.h. */ |
81516450 DE |
1670 | |
1671 | void | |
1672 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, | |
1673 | int start, int end) | |
1674 | { | |
1675 | struct tdesc_type *field_type; | |
1676 | ||
1677 | gdb_assert (start >= 0 && end >= start); | |
1678 | ||
1679 | if (type->u.u.size > 4) | |
1680 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
1681 | else | |
1682 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1683 | ||
1684 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1685 | } | |
1686 | ||
f49ff000 | 1687 | /* See arch/tdesc.h. */ |
81516450 | 1688 | |
f5dff777 DJ |
1689 | void |
1690 | tdesc_add_flag (struct tdesc_type *type, int start, | |
1691 | const char *flag_name) | |
1692 | { | |
81516450 | 1693 | struct tdesc_type_field f = { 0 }; |
f5dff777 | 1694 | |
81516450 DE |
1695 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1696 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 DJ |
1697 | |
1698 | f.name = xstrdup (flag_name); | |
1699 | f.start = start; | |
81516450 DE |
1700 | f.end = start; |
1701 | f.type = tdesc_predefined_type (TDESC_TYPE_BOOL); | |
f5dff777 | 1702 | |
81516450 DE |
1703 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
1704 | } | |
1705 | ||
1706 | void | |
1707 | tdesc_add_enum_value (struct tdesc_type *type, int value, | |
1708 | const char *name) | |
1709 | { | |
1710 | struct tdesc_type_field f = { 0 }; | |
1711 | ||
1712 | gdb_assert (type->kind == TDESC_TYPE_ENUM); | |
1713 | ||
1714 | f.name = xstrdup (name); | |
1715 | f.start = value; | |
1716 | f.end = -1; | |
1717 | f.type = tdesc_predefined_type (TDESC_TYPE_INT32); | |
1718 | ||
1719 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
f5dff777 DJ |
1720 | } |
1721 | ||
f49ff000 YQ |
1722 | /* See arch/tdesc.h. */ |
1723 | ||
123dc839 | 1724 | struct tdesc_feature * |
0abe8a89 YQ |
1725 | tdesc_create_feature (struct target_desc *tdesc, const char *name, |
1726 | const char *xml) | |
123dc839 | 1727 | { |
72ddacb7 | 1728 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 DJ |
1729 | |
1730 | VEC_safe_push (tdesc_feature_p, tdesc->features, new_feature); | |
1731 | return new_feature; | |
1732 | } | |
1733 | ||
424163ea DJ |
1734 | struct target_desc * |
1735 | allocate_target_description (void) | |
1736 | { | |
b468ff4c | 1737 | return new target_desc (); |
424163ea | 1738 | } |
29709017 | 1739 | |
23181151 DJ |
1740 | static void |
1741 | free_target_description (void *arg) | |
1742 | { | |
19ba03f4 | 1743 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1744 | |
b468ff4c | 1745 | delete target_desc; |
23181151 DJ |
1746 | } |
1747 | ||
1748 | struct cleanup * | |
1749 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1750 | { | |
1751 | return make_cleanup (free_target_description, target_desc); | |
1752 | } | |
1753 | ||
e35359c5 UW |
1754 | void |
1755 | tdesc_add_compatible (struct target_desc *target_desc, | |
1756 | const struct bfd_arch_info *compatible) | |
1757 | { | |
e35359c5 UW |
1758 | /* If this instance of GDB is compiled without BFD support for the |
1759 | compatible architecture, simply ignore it -- we would not be able | |
1760 | to handle it anyway. */ | |
1761 | if (compatible == NULL) | |
1762 | return; | |
1763 | ||
40e2a983 | 1764 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
1765 | if (compat == compatible) |
1766 | internal_error (__FILE__, __LINE__, | |
1767 | _("Attempted to add duplicate " | |
1768 | "compatible architecture \"%s\""), | |
1769 | compatible->printable_name); | |
1770 | ||
40e2a983 | 1771 | target_desc->compatible.push_back (compatible); |
e35359c5 UW |
1772 | } |
1773 | ||
29709017 DJ |
1774 | void |
1775 | set_tdesc_property (struct target_desc *target_desc, | |
1776 | const char *key, const char *value) | |
1777 | { | |
29709017 DJ |
1778 | gdb_assert (key != NULL && value != NULL); |
1779 | ||
129c10bc SM |
1780 | if (tdesc_property (target_desc, key) != NULL) |
1781 | internal_error (__FILE__, __LINE__, | |
1782 | _("Attempted to add duplicate property \"%s\""), key); | |
29709017 | 1783 | |
129c10bc | 1784 | target_desc->properties.emplace_back (key, value); |
29709017 | 1785 | } |
23181151 | 1786 | |
5f035c07 YQ |
1787 | /* See arch/tdesc.h. */ |
1788 | ||
1789 | void | |
1790 | set_tdesc_architecture (struct target_desc *target_desc, | |
1791 | const char *name) | |
1792 | { | |
1793 | set_tdesc_architecture (target_desc, bfd_scan_arch (name)); | |
1794 | } | |
1795 | ||
23181151 DJ |
1796 | void |
1797 | set_tdesc_architecture (struct target_desc *target_desc, | |
1798 | const struct bfd_arch_info *arch) | |
1799 | { | |
1800 | target_desc->arch = arch; | |
1801 | } | |
08d16641 | 1802 | |
5f035c07 YQ |
1803 | /* See arch/tdesc.h. */ |
1804 | ||
1805 | void | |
1806 | set_tdesc_osabi (struct target_desc *target_desc, const char *name) | |
1807 | { | |
1808 | set_tdesc_osabi (target_desc, osabi_from_tdesc_string (name)); | |
1809 | } | |
1810 | ||
08d16641 PA |
1811 | void |
1812 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1813 | { | |
1814 | target_desc->osabi = osabi; | |
1815 | } | |
23181151 DJ |
1816 | \f |
1817 | ||
1818 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1819 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1820 | ||
1821 | /* Helper functions for the CLI commands. */ | |
1822 | ||
1823 | static void | |
981a3fb3 | 1824 | set_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1825 | { |
635c7e8a | 1826 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1827 | } |
1828 | ||
1829 | static void | |
981a3fb3 | 1830 | show_tdesc_cmd (const char *args, int from_tty) |
23181151 DJ |
1831 | { |
1832 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1833 | } | |
1834 | ||
1835 | static void | |
981a3fb3 | 1836 | unset_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1837 | { |
635c7e8a | 1838 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1839 | } |
1840 | ||
1841 | static void | |
eb4c3f4a | 1842 | set_tdesc_filename_cmd (const char *args, int from_tty, |
23181151 DJ |
1843 | struct cmd_list_element *c) |
1844 | { | |
6ecd4729 PA |
1845 | xfree (target_description_filename); |
1846 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1847 | ||
23181151 DJ |
1848 | target_clear_description (); |
1849 | target_find_description (); | |
1850 | } | |
1851 | ||
1852 | static void | |
1853 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1854 | struct cmd_list_element *c, | |
1855 | const char *value) | |
1856 | { | |
6ecd4729 PA |
1857 | value = target_description_filename; |
1858 | ||
23181151 | 1859 | if (value != NULL && *value != '\0') |
3e43a32a | 1860 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1861 | value); |
1862 | else | |
3e43a32a MS |
1863 | printf_filtered (_("The target description will be " |
1864 | "read from the target.\n")); | |
23181151 DJ |
1865 | } |
1866 | ||
1867 | static void | |
e100df1a | 1868 | unset_tdesc_filename_cmd (const char *args, int from_tty) |
23181151 DJ |
1869 | { |
1870 | xfree (target_description_filename); | |
1871 | target_description_filename = NULL; | |
1872 | target_clear_description (); | |
1873 | target_find_description (); | |
1874 | } | |
1875 | ||
6eb1e6a8 YQ |
1876 | /* Print target description in C. */ |
1877 | ||
1878 | class print_c_tdesc : public tdesc_element_visitor | |
1879 | { | |
1880 | public: | |
1881 | print_c_tdesc (std::string &filename_after_features) | |
1882 | : m_filename_after_features (filename_after_features) | |
1883 | { | |
1884 | const char *inp; | |
1885 | char *outp; | |
1886 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1887 | ||
1888 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1889 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1890 | if (*inp == '.') | |
1891 | break; | |
1892 | else if (*inp == '-') | |
1893 | *outp++ = '_'; | |
1894 | else | |
1895 | *outp++ = *inp; | |
1896 | *outp = '\0'; | |
1897 | ||
1898 | /* Standard boilerplate. */ | |
1899 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1900 | "-*- buffer-read-only: t -*- vi" | |
1901 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1902 | } |
1903 | ||
1904 | ~print_c_tdesc () | |
1905 | { | |
1906 | xfree (m_function); | |
1907 | } | |
1908 | ||
1909 | void visit_pre (const target_desc *e) override | |
1910 | { | |
25aa13e5 YQ |
1911 | printf_unfiltered (" Original: %s */\n\n", |
1912 | lbasename (m_filename_after_features.c_str ())); | |
1913 | ||
6eb1e6a8 YQ |
1914 | printf_unfiltered ("#include \"defs.h\"\n"); |
1915 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1916 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1917 | printf_unfiltered ("\n"); | |
1918 | ||
1919 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1920 | printf_unfiltered ("static void\n"); | |
1921 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1922 | printf_unfiltered ("{\n"); | |
1923 | printf_unfiltered | |
1924 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1925 | ||
1926 | if (tdesc_architecture (e) != NULL) | |
1927 | { | |
1928 | printf_unfiltered | |
1929 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1930 | tdesc_architecture (e)->printable_name); | |
1931 | printf_unfiltered ("\n"); | |
1932 | } | |
1933 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1934 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1935 | { | |
1936 | printf_unfiltered | |
1937 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1938 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1939 | printf_unfiltered ("\n"); | |
1940 | } | |
1941 | ||
40e2a983 SM |
1942 | for (const struct bfd_arch_info *compatible : e->compatible) |
1943 | printf_unfiltered | |
1944 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1945 | compatible->printable_name); | |
6eb1e6a8 | 1946 | |
40e2a983 | 1947 | if (!e->compatible.empty ()) |
6eb1e6a8 YQ |
1948 | printf_unfiltered ("\n"); |
1949 | ||
129c10bc SM |
1950 | for (const property &prop : e->properties) |
1951 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1952 | prop.key.c_str (), prop.value.c_str ()); | |
1953 | ||
6eb1e6a8 YQ |
1954 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
1955 | } | |
1956 | ||
25aa13e5 | 1957 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1958 | { |
1959 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
1960 | e->name); | |
1961 | } | |
1962 | ||
25aa13e5 YQ |
1963 | void visit_post (const tdesc_feature *e) override |
1964 | {} | |
1965 | ||
6eb1e6a8 YQ |
1966 | void visit_post (const target_desc *e) override |
1967 | { | |
1968 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1969 | printf_unfiltered ("}\n"); | |
1970 | } | |
1971 | ||
1972 | void visit (const tdesc_type *type) override | |
1973 | { | |
1974 | struct tdesc_type_field *f; | |
1975 | ||
1976 | /* Now we do some "filtering" in order to know which variables to | |
1977 | declare. This is needed because otherwise we would declare unused | |
1978 | variables `field_type' and `type'. */ | |
1979 | if (!m_printed_field_type) | |
1980 | { | |
1981 | printf_unfiltered (" struct tdesc_type *field_type;\n"); | |
1982 | m_printed_field_type = true; | |
1983 | } | |
1984 | ||
1985 | if ((type->kind == TDESC_TYPE_UNION | |
1986 | || type->kind == TDESC_TYPE_STRUCT | |
1987 | || type->kind == TDESC_TYPE_FLAGS | |
1988 | || type->kind == TDESC_TYPE_ENUM) | |
1989 | && VEC_length (tdesc_type_field, type->u.u.fields) > 0 | |
1990 | && !m_printed_type) | |
1991 | { | |
1992 | printf_unfiltered (" struct tdesc_type *type;\n"); | |
1993 | m_printed_type = true; | |
1994 | } | |
1995 | ||
1996 | switch (type->kind) | |
1997 | { | |
1998 | case TDESC_TYPE_VECTOR: | |
1999 | printf_unfiltered | |
2000 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
2001 | type->u.v.type->name); | |
2002 | printf_unfiltered | |
2003 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", | |
2004 | type->name, type->u.v.count); | |
2005 | break; | |
2006 | case TDESC_TYPE_STRUCT: | |
2007 | case TDESC_TYPE_FLAGS: | |
2008 | if (type->kind == TDESC_TYPE_STRUCT) | |
2009 | { | |
2010 | printf_unfiltered | |
2011 | (" type = tdesc_create_struct (feature, \"%s\");\n", | |
2012 | type->name); | |
2013 | if (type->u.u.size != 0) | |
2014 | printf_unfiltered | |
2015 | (" tdesc_set_struct_size (type, %d);\n", | |
2016 | type->u.u.size); | |
2017 | } | |
2018 | else | |
2019 | { | |
2020 | printf_unfiltered | |
2021 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", | |
2022 | type->name, type->u.u.size); | |
2023 | } | |
2024 | for (int ix3 = 0; | |
2025 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2026 | ix3++) | |
2027 | { | |
2028 | const char *type_name; | |
2029 | ||
2030 | gdb_assert (f->type != NULL); | |
2031 | type_name = f->type->name; | |
2032 | ||
2033 | /* To minimize changes to generated files, don't emit type | |
2034 | info for fields that have defaulted types. */ | |
2035 | if (f->start != -1) | |
2036 | { | |
2037 | gdb_assert (f->end != -1); | |
2038 | if (f->type->kind == TDESC_TYPE_BOOL) | |
2039 | { | |
2040 | gdb_assert (f->start == f->end); | |
2041 | printf_unfiltered | |
2042 | (" tdesc_add_flag (type, %d, \"%s\");\n", | |
2043 | f->start, f->name); | |
2044 | } | |
2045 | else if ((type->u.u.size == 4 | |
2046 | && f->type->kind == TDESC_TYPE_UINT32) | |
2047 | || (type->u.u.size == 8 | |
2048 | && f->type->kind == TDESC_TYPE_UINT64)) | |
2049 | { | |
2050 | printf_unfiltered | |
2051 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", | |
2052 | f->name, f->start, f->end); | |
2053 | } | |
2054 | else | |
2055 | { | |
2056 | printf_unfiltered | |
2057 | (" field_type = tdesc_named_type (feature," | |
2058 | " \"%s\");\n", | |
2059 | type_name); | |
2060 | printf_unfiltered | |
2061 | (" tdesc_add_typed_bitfield (type, \"%s\"," | |
2062 | " %d, %d, field_type);\n", | |
2063 | f->name, f->start, f->end); | |
2064 | } | |
2065 | } | |
2066 | else /* Not a bitfield. */ | |
2067 | { | |
2068 | gdb_assert (f->end == -1); | |
2069 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
2070 | printf_unfiltered | |
2071 | (" field_type = tdesc_named_type (feature," | |
2072 | " \"%s\");\n", | |
2073 | type_name); | |
2074 | printf_unfiltered | |
2075 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2076 | f->name); | |
2077 | } | |
2078 | } | |
2079 | break; | |
2080 | case TDESC_TYPE_UNION: | |
2081 | printf_unfiltered | |
2082 | (" type = tdesc_create_union (feature, \"%s\");\n", | |
2083 | type->name); | |
2084 | for (int ix3 = 0; | |
2085 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2086 | ix3++) | |
2087 | { | |
2088 | printf_unfiltered | |
2089 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
2090 | f->type->name); | |
2091 | printf_unfiltered | |
2092 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2093 | f->name); | |
2094 | } | |
2095 | break; | |
2096 | case TDESC_TYPE_ENUM: | |
2097 | printf_unfiltered | |
2098 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", | |
2099 | type->name, type->u.u.size); | |
2100 | for (int ix3 = 0; | |
2101 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2102 | ix3++) | |
2103 | printf_unfiltered | |
2104 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", | |
2105 | f->start, f->name); | |
2106 | break; | |
2107 | default: | |
2108 | error (_("C output is not supported type \"%s\"."), type->name); | |
2109 | } | |
2110 | printf_unfiltered ("\n"); | |
2111 | } | |
2112 | ||
2113 | void visit (const tdesc_reg *reg) override | |
2114 | { | |
2115 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
2116 | reg->name, reg->target_regnum, reg->save_restore); | |
2117 | if (reg->group) | |
2118 | printf_unfiltered ("\"%s\", ", reg->group); | |
2119 | else | |
2120 | printf_unfiltered ("NULL, "); | |
2121 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
2122 | } | |
2123 | ||
25aa13e5 YQ |
2124 | protected: |
2125 | std::string m_filename_after_features; | |
2126 | ||
6eb1e6a8 YQ |
2127 | private: |
2128 | char *m_function; | |
6eb1e6a8 YQ |
2129 | bool m_printed_field_type = false; |
2130 | bool m_printed_type = false; | |
2131 | }; | |
2132 | ||
25aa13e5 YQ |
2133 | /* Print target description feature in C. */ |
2134 | ||
2135 | class print_c_feature : public print_c_tdesc | |
2136 | { | |
2137 | public: | |
2138 | print_c_feature (std::string &file) | |
2139 | : print_c_tdesc (file) | |
2140 | { | |
2141 | /* Trim ".tmp". */ | |
2142 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
2143 | ||
2144 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
2145 | } | |
2146 | ||
2147 | void visit_pre (const target_desc *e) override | |
2148 | { | |
2149 | printf_unfiltered (" Original: %s */\n\n", | |
2150 | lbasename (m_filename_after_features.c_str ())); | |
2151 | ||
f49ff000 | 2152 | printf_unfiltered ("#include \"arch/tdesc.h\"\n"); |
25aa13e5 YQ |
2153 | printf_unfiltered ("\n"); |
2154 | } | |
2155 | ||
2156 | void visit_post (const target_desc *e) override | |
2157 | {} | |
2158 | ||
2159 | void visit_pre (const tdesc_feature *e) override | |
2160 | { | |
2161 | std::string name (m_filename_after_features); | |
2162 | ||
2163 | auto pos = name.find_first_of ('.'); | |
2164 | ||
2165 | name = name.substr (0, pos); | |
2166 | std::replace (name.begin (), name.end (), '/', '_'); | |
2167 | std::replace (name.begin (), name.end (), '-', '_'); | |
2168 | ||
2169 | printf_unfiltered ("static int\n"); | |
2170 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
2171 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
2172 | ||
2173 | printf_unfiltered ("{\n"); | |
2174 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
0abe8a89 YQ |
2175 | |
2176 | printf_unfiltered | |
2177 | ("\n feature = tdesc_create_feature (result, \"%s\", \"%s\");\n", | |
2178 | e->name, lbasename (m_filename_after_features.c_str ())); | |
25aa13e5 YQ |
2179 | } |
2180 | ||
2181 | void visit_post (const tdesc_feature *e) override | |
2182 | { | |
2183 | printf_unfiltered (" return regnum;\n"); | |
2184 | printf_unfiltered ("}\n"); | |
2185 | } | |
2186 | ||
2187 | void visit (const tdesc_reg *reg) override | |
2188 | { | |
ea03d0d3 YQ |
2189 | /* Most "reg" in XML target descriptions don't have "regnum" |
2190 | attribute, so the register number is allocated sequentially. | |
2191 | In case that reg has "regnum" attribute, register number | |
2192 | should be set by that explicitly. */ | |
2193 | ||
2194 | if (reg->target_regnum < m_next_regnum) | |
2195 | { | |
2196 | /* The integrity check, it can catch some errors on register | |
2197 | number collision, like this, | |
2198 | ||
2199 | <reg name="x0" bitsize="32"/> | |
2200 | <reg name="x1" bitsize="32"/> | |
2201 | <reg name="x2" bitsize="32"/> | |
2202 | <reg name="x3" bitsize="32"/> | |
2203 | <reg name="ps" bitsize="32" regnum="3"/> | |
2204 | ||
2205 | but it also has false negatives. The target description | |
2206 | below is correct, | |
2207 | ||
2208 | <reg name="x1" bitsize="32" regnum="1"/> | |
2209 | <reg name="x3" bitsize="32" regnum="3"/> | |
2210 | <reg name="x2" bitsize="32" regnum="2"/> | |
2211 | <reg name="x4" bitsize="32" regnum="4"/> | |
2212 | ||
2213 | but it is not a good practice, so still error on this, | |
2214 | and also print the message so that it can be saved in the | |
2215 | generated c file. */ | |
2216 | ||
2217 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
2218 | reg->target_regnum); | |
2219 | printf_unfiltered ("is not the largest number (%d).\n", | |
2220 | m_next_regnum); | |
2221 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
2222 | reg->target_regnum, m_next_regnum); | |
2223 | } | |
2224 | ||
2225 | if (reg->target_regnum > m_next_regnum) | |
2226 | { | |
2227 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
2228 | m_next_regnum = reg->target_regnum; | |
2229 | } | |
2230 | ||
25aa13e5 YQ |
2231 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
2232 | reg->name, reg->save_restore); | |
2233 | if (reg->group) | |
2234 | printf_unfiltered ("\"%s\", ", reg->group); | |
2235 | else | |
2236 | printf_unfiltered ("NULL, "); | |
2237 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
ea03d0d3 YQ |
2238 | |
2239 | m_next_regnum++; | |
25aa13e5 YQ |
2240 | } |
2241 | ||
ea03d0d3 YQ |
2242 | private: |
2243 | /* The register number to use for the next register we see. */ | |
2244 | int m_next_regnum = 0; | |
25aa13e5 YQ |
2245 | }; |
2246 | ||
81adfced | 2247 | static void |
e100df1a | 2248 | maint_print_c_tdesc_cmd (const char *args, int from_tty) |
81adfced DJ |
2249 | { |
2250 | const struct target_desc *tdesc; | |
6eb1e6a8 | 2251 | const char *filename; |
81adfced | 2252 | |
8e2141c6 YQ |
2253 | if (args == NULL) |
2254 | { | |
2255 | /* Use the global target-supplied description, not the current | |
2256 | architecture's. This lets a GDB for one architecture generate C | |
2257 | for another architecture's description, even though the gdbarch | |
2258 | initialization code will reject the new description. */ | |
2259 | tdesc = current_target_desc; | |
2260 | filename = target_description_filename; | |
2261 | } | |
2262 | else | |
2263 | { | |
2264 | /* Use the target description from the XML file. */ | |
2265 | filename = args; | |
2266 | tdesc = file_read_description_xml (filename); | |
2267 | } | |
2268 | ||
81adfced DJ |
2269 | if (tdesc == NULL) |
2270 | error (_("There is no target description to print.")); | |
2271 | ||
8e2141c6 | 2272 | if (filename == NULL) |
81adfced DJ |
2273 | error (_("The current target description did not come from an XML file.")); |
2274 | ||
6eb1e6a8 YQ |
2275 | std::string filename_after_features (filename); |
2276 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 2277 | |
6eb1e6a8 YQ |
2278 | if (loc != std::string::npos) |
2279 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 2280 | |
25aa13e5 YQ |
2281 | /* Print c files for target features instead of target descriptions, |
2282 | because c files got from target features are more flexible than the | |
2283 | counterparts. */ | |
6c73f67f YQ |
2284 | if (startswith (filename_after_features.c_str (), "i386/32bit-") |
2285 | || startswith (filename_after_features.c_str (), "i386/64bit-") | |
506fe5f4 | 2286 | || startswith (filename_after_features.c_str (), "i386/x32-core.xml") |
49bdb7ee AH |
2287 | || startswith (filename_after_features.c_str (), "tic6x-") |
2288 | || startswith (filename_after_features.c_str (), "aarch64")) | |
25aa13e5 YQ |
2289 | { |
2290 | print_c_feature v (filename_after_features); | |
81adfced | 2291 | |
25aa13e5 YQ |
2292 | tdesc->accept (v); |
2293 | } | |
2294 | else | |
2295 | { | |
2296 | print_c_tdesc v (filename_after_features); | |
2297 | ||
2298 | tdesc->accept (v); | |
2299 | } | |
81adfced DJ |
2300 | } |
2301 | ||
27d41eac YQ |
2302 | namespace selftests { |
2303 | ||
2304 | static std::vector<std::pair<const char*, const target_desc *>> xml_tdesc; | |
2305 | ||
2306 | #if GDB_SELF_TEST | |
2307 | ||
2308 | /* See target-descritpions.h. */ | |
2309 | ||
2310 | void | |
2311 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
2312 | { | |
2313 | xml_tdesc.emplace_back (xml_file, tdesc); | |
2314 | } | |
2315 | #endif | |
2316 | ||
2317 | } | |
2318 | ||
2319 | /* Check that the target descriptions created dynamically by | |
2320 | architecture-specific code equal the descriptions created from XML files | |
2321 | found in the specified directory DIR. */ | |
2322 | ||
2323 | static void | |
e100df1a | 2324 | maintenance_check_xml_descriptions (const char *dir, int from_tty) |
27d41eac YQ |
2325 | { |
2326 | if (dir == NULL) | |
2327 | error (_("Missing dir name")); | |
2328 | ||
2329 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
2330 | std::string feature_dir (dir1.get ()); | |
2331 | unsigned int failed = 0; | |
2332 | ||
2333 | for (auto const &e : selftests::xml_tdesc) | |
2334 | { | |
2335 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.first); | |
2336 | const target_desc *tdesc | |
2337 | = file_read_description_xml (tdesc_xml.data ()); | |
2338 | ||
2339 | if (tdesc == NULL || *tdesc != *e.second) | |
2340 | failed++; | |
2341 | } | |
2342 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
2343 | (long) selftests::xml_tdesc.size (), failed); | |
2344 | } | |
2345 | ||
23181151 DJ |
2346 | void |
2347 | _initialize_target_descriptions (void) | |
2348 | { | |
123dc839 DJ |
2349 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
2350 | ||
23181151 DJ |
2351 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
2352 | Set target description specific variables."), | |
2353 | &tdesc_set_cmdlist, "set tdesc ", | |
2354 | 0 /* allow-unknown */, &setlist); | |
2355 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
2356 | Show target description specific variables."), | |
2357 | &tdesc_show_cmdlist, "show tdesc ", | |
2358 | 0 /* allow-unknown */, &showlist); | |
2359 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2360 | Unset target description specific variables."), | |
2361 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2362 | 0 /* allow-unknown */, &unsetlist); | |
2363 | ||
2364 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2365 | &tdesc_filename_cmd_string, |
23181151 DJ |
2366 | _("\ |
2367 | Set the file to read for an XML target description"), _("\ | |
2368 | Show the file to read for an XML target description"), _("\ | |
2369 | When set, GDB will read the target description from a local\n\ | |
2370 | file instead of querying the remote target."), | |
2371 | set_tdesc_filename_cmd, | |
2372 | show_tdesc_filename_cmd, | |
2373 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2374 | ||
2375 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2376 | Unset the file to read for an XML target description. When unset,\n\ | |
2377 | GDB will read the description from the target."), | |
2378 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2379 | |
2380 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2381 | Print the current target description as a C source file."), | |
2382 | &maintenanceprintlist); | |
27d41eac YQ |
2383 | |
2384 | cmd_list_element *cmd; | |
2385 | ||
2386 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
2387 | maintenance_check_xml_descriptions, _("\ | |
2388 | Check the target descriptions created in GDB equal the descriptions\n\ | |
2389 | created from XML files in the directory.\n\ | |
2390 | The parameter is the directory name."), | |
2391 | &maintenancechecklist); | |
2392 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 2393 | } |