Commit | Line | Data |
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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 | ||
c9c895b9 | 76 | 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 | } | |
c9c895b9 SM |
154 | }; |
155 | ||
156 | typedef std::unique_ptr<tdesc_reg> tdesc_reg_up; | |
123dc839 DJ |
157 | |
158 | /* A named type from a target description. */ | |
ad068eab UW |
159 | |
160 | typedef struct tdesc_type_field | |
161 | { | |
162 | char *name; | |
163 | struct tdesc_type *type; | |
81516450 DE |
164 | /* For non-enum-values, either both are -1 (non-bitfield), or both are |
165 | not -1 (bitfield). For enum values, start is the value (which could be | |
166 | -1), end is -1. */ | |
f5dff777 | 167 | int start, end; |
ad068eab UW |
168 | } tdesc_type_field; |
169 | DEF_VEC_O(tdesc_type_field); | |
170 | ||
52059ffd TT |
171 | enum tdesc_type_kind |
172 | { | |
173 | /* Predefined types. */ | |
81516450 | 174 | TDESC_TYPE_BOOL, |
52059ffd TT |
175 | TDESC_TYPE_INT8, |
176 | TDESC_TYPE_INT16, | |
177 | TDESC_TYPE_INT32, | |
178 | TDESC_TYPE_INT64, | |
179 | TDESC_TYPE_INT128, | |
180 | TDESC_TYPE_UINT8, | |
181 | TDESC_TYPE_UINT16, | |
182 | TDESC_TYPE_UINT32, | |
183 | TDESC_TYPE_UINT64, | |
184 | TDESC_TYPE_UINT128, | |
185 | TDESC_TYPE_CODE_PTR, | |
186 | TDESC_TYPE_DATA_PTR, | |
187 | TDESC_TYPE_IEEE_SINGLE, | |
188 | TDESC_TYPE_IEEE_DOUBLE, | |
189 | TDESC_TYPE_ARM_FPA_EXT, | |
190 | TDESC_TYPE_I387_EXT, | |
191 | ||
192 | /* Types defined by a target feature. */ | |
193 | TDESC_TYPE_VECTOR, | |
194 | TDESC_TYPE_STRUCT, | |
195 | TDESC_TYPE_UNION, | |
81516450 DE |
196 | TDESC_TYPE_FLAGS, |
197 | TDESC_TYPE_ENUM | |
52059ffd TT |
198 | }; |
199 | ||
6eb1e6a8 | 200 | typedef struct tdesc_type : tdesc_element |
ad068eab | 201 | { |
72ddacb7 YQ |
202 | tdesc_type (const char *name_, enum tdesc_type_kind kind_) |
203 | : name (xstrdup (name_)), kind (kind_) | |
204 | { | |
205 | memset (&u, 0, sizeof (u)); | |
206 | } | |
207 | ||
6eb1e6a8 | 208 | virtual ~tdesc_type () |
72ddacb7 YQ |
209 | { |
210 | switch (kind) | |
211 | { | |
212 | case TDESC_TYPE_STRUCT: | |
213 | case TDESC_TYPE_UNION: | |
214 | case TDESC_TYPE_FLAGS: | |
215 | case TDESC_TYPE_ENUM: | |
216 | { | |
217 | struct tdesc_type_field *f; | |
218 | int ix; | |
219 | ||
220 | for (ix = 0; | |
221 | VEC_iterate (tdesc_type_field, u.u.fields, ix, f); | |
222 | ix++) | |
223 | xfree (f->name); | |
224 | ||
225 | VEC_free (tdesc_type_field, u.u.fields); | |
226 | } | |
227 | break; | |
228 | ||
229 | default: | |
230 | break; | |
231 | } | |
232 | xfree ((char *) name); | |
233 | } | |
d6541620 YQ |
234 | |
235 | DISABLE_COPY_AND_ASSIGN (tdesc_type); | |
72ddacb7 | 236 | |
a121b7c1 PA |
237 | /* The name of this type. If this type is a built-in type, this is |
238 | a pointer to a constant string. Otherwise, it's a | |
239 | malloc-allocated string (and thus must be freed). */ | |
240 | const char *name; | |
ad068eab UW |
241 | |
242 | /* Identify the kind of this type. */ | |
52059ffd | 243 | enum tdesc_type_kind kind; |
ad068eab UW |
244 | |
245 | /* Kind-specific data. */ | |
246 | union | |
247 | { | |
248 | /* Vector type. */ | |
249 | struct | |
250 | { | |
251 | struct tdesc_type *type; | |
252 | int count; | |
253 | } v; | |
254 | ||
81516450 | 255 | /* Struct, union, flags, or enum type. */ |
ad068eab UW |
256 | struct |
257 | { | |
258 | VEC(tdesc_type_field) *fields; | |
54157a25 | 259 | int size; |
ad068eab UW |
260 | } u; |
261 | } u; | |
6eb1e6a8 YQ |
262 | |
263 | void accept (tdesc_element_visitor &v) const override | |
264 | { | |
265 | v.visit (this); | |
266 | } | |
267 | ||
27d41eac YQ |
268 | bool operator== (const tdesc_type &other) const |
269 | { | |
270 | return (streq (name, other.name) && kind == other.kind); | |
271 | } | |
272 | ||
273 | bool operator!= (const tdesc_type &other) const | |
274 | { | |
275 | return !(*this == other); | |
276 | } | |
ad068eab UW |
277 | } *tdesc_type_p; |
278 | DEF_VEC_P(tdesc_type_p); | |
123dc839 DJ |
279 | |
280 | /* A feature from a target description. Each feature is a collection | |
281 | of other elements, e.g. registers and types. */ | |
282 | ||
3eea796c | 283 | struct tdesc_feature : tdesc_element |
123dc839 | 284 | { |
f65ff9f9 SM |
285 | tdesc_feature (const std::string &name_) |
286 | : name (name_) | |
72ddacb7 YQ |
287 | {} |
288 | ||
6eb1e6a8 | 289 | virtual ~tdesc_feature () |
72ddacb7 | 290 | { |
72ddacb7 YQ |
291 | struct tdesc_type *type; |
292 | int ix; | |
293 | ||
72ddacb7 YQ |
294 | for (ix = 0; VEC_iterate (tdesc_type_p, types, ix, type); ix++) |
295 | delete type; | |
296 | VEC_free (tdesc_type_p, types); | |
72ddacb7 YQ |
297 | } |
298 | ||
d6541620 | 299 | DISABLE_COPY_AND_ASSIGN (tdesc_feature); |
72ddacb7 | 300 | |
123dc839 DJ |
301 | /* The name of this feature. It may be recognized by the architecture |
302 | support code. */ | |
f65ff9f9 | 303 | std::string name; |
123dc839 DJ |
304 | |
305 | /* The registers associated with this feature. */ | |
c9c895b9 | 306 | std::vector<std::unique_ptr<tdesc_reg>> registers; |
123dc839 DJ |
307 | |
308 | /* The types associated with this feature. */ | |
72ddacb7 | 309 | VEC(tdesc_type_p) *types = NULL; |
6eb1e6a8 YQ |
310 | |
311 | void accept (tdesc_element_visitor &v) const override | |
312 | { | |
25aa13e5 | 313 | v.visit_pre (this); |
6eb1e6a8 YQ |
314 | |
315 | struct tdesc_type *type; | |
316 | ||
317 | for (int ix = 0; | |
318 | VEC_iterate (tdesc_type_p, types, ix, type); | |
319 | ix++) | |
320 | type->accept (v); | |
321 | ||
c9c895b9 | 322 | for (const tdesc_reg_up ® : registers) |
6eb1e6a8 YQ |
323 | reg->accept (v); |
324 | ||
25aa13e5 YQ |
325 | v.visit_post (this); |
326 | } | |
27d41eac YQ |
327 | |
328 | bool operator== (const tdesc_feature &other) const | |
329 | { | |
f65ff9f9 | 330 | if (name != other.name) |
27d41eac YQ |
331 | return false; |
332 | ||
c9c895b9 | 333 | if (registers.size () != other.registers.size ()) |
27d41eac YQ |
334 | return false; |
335 | ||
c9c895b9 | 336 | for (int ix = 0; ix < registers.size (); ix++) |
27d41eac | 337 | { |
c9c895b9 SM |
338 | const tdesc_reg_up ®1 = registers[ix]; |
339 | const tdesc_reg_up ®2 = other.registers[ix]; | |
27d41eac | 340 | |
c9c895b9 | 341 | if (reg1 != reg2 && *reg1 != *reg2) |
27d41eac YQ |
342 | return false; |
343 | } | |
344 | ||
345 | if (VEC_length (tdesc_type_p, types) | |
346 | != VEC_length (tdesc_type_p, other.types)) | |
347 | return false; | |
348 | ||
349 | tdesc_type *type; | |
350 | ||
351 | for (int ix = 0; | |
352 | VEC_iterate (tdesc_type_p, types, ix, type); | |
353 | ix++) | |
354 | { | |
355 | tdesc_type *type2 | |
356 | = VEC_index (tdesc_type_p, other.types, ix); | |
357 | ||
358 | if (type != type2 && *type != *type2) | |
359 | return false; | |
360 | } | |
361 | ||
362 | return true; | |
363 | } | |
364 | ||
365 | bool operator!= (const tdesc_feature &other) const | |
366 | { | |
367 | return !(*this == other); | |
368 | } | |
369 | ||
3eea796c SM |
370 | }; |
371 | ||
372 | typedef std::unique_ptr<tdesc_feature> tdesc_feature_up; | |
123dc839 DJ |
373 | |
374 | /* A target description. */ | |
375 | ||
6eb1e6a8 | 376 | struct target_desc : tdesc_element |
424163ea | 377 | { |
b468ff4c YQ |
378 | target_desc () |
379 | {} | |
380 | ||
3eea796c | 381 | virtual ~target_desc () = default; |
b468ff4c YQ |
382 | |
383 | target_desc (const target_desc &) = delete; | |
384 | void operator= (const target_desc &) = delete; | |
385 | ||
23181151 | 386 | /* The architecture reported by the target, if any. */ |
b468ff4c | 387 | const struct bfd_arch_info *arch = NULL; |
23181151 | 388 | |
08d16641 PA |
389 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
390 | otherwise. */ | |
b468ff4c | 391 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 392 | |
e35359c5 | 393 | /* The list of compatible architectures reported by the target. */ |
40e2a983 | 394 | std::vector<const bfd_arch_info *> compatible; |
e35359c5 | 395 | |
29709017 | 396 | /* Any architecture-specific properties specified by the target. */ |
129c10bc | 397 | std::vector<property> properties; |
123dc839 DJ |
398 | |
399 | /* The features associated with this target. */ | |
3eea796c | 400 | std::vector<std::unique_ptr<tdesc_feature>> features; |
6eb1e6a8 YQ |
401 | |
402 | void accept (tdesc_element_visitor &v) const override | |
403 | { | |
404 | v.visit_pre (this); | |
405 | ||
3eea796c | 406 | for (const tdesc_feature_up &feature : features) |
6eb1e6a8 YQ |
407 | feature->accept (v); |
408 | ||
409 | v.visit_post (this); | |
410 | } | |
27d41eac YQ |
411 | |
412 | bool operator== (const target_desc &other) const | |
413 | { | |
414 | if (arch != other.arch) | |
415 | return false; | |
416 | ||
417 | if (osabi != other.osabi) | |
418 | return false; | |
419 | ||
3eea796c | 420 | if (features.size () != other.features.size ()) |
27d41eac YQ |
421 | return false; |
422 | ||
3eea796c | 423 | for (int ix = 0; ix < features.size (); ix++) |
27d41eac | 424 | { |
3eea796c SM |
425 | const tdesc_feature_up &feature1 = features[ix]; |
426 | const tdesc_feature_up &feature2 = other.features[ix]; | |
27d41eac | 427 | |
3eea796c | 428 | if (feature1 != feature2 && *feature1 != *feature2) |
27d41eac YQ |
429 | return false; |
430 | } | |
431 | ||
432 | return true; | |
433 | } | |
434 | ||
435 | bool operator!= (const target_desc &other) const | |
436 | { | |
437 | return !(*this == other); | |
438 | } | |
123dc839 DJ |
439 | }; |
440 | ||
441 | /* Per-architecture data associated with a target description. The | |
442 | target description may be shared by multiple architectures, but | |
443 | this data is private to one gdbarch. */ | |
444 | ||
ad068eab UW |
445 | typedef struct tdesc_arch_reg |
446 | { | |
447 | struct tdesc_reg *reg; | |
448 | struct type *type; | |
449 | } tdesc_arch_reg; | |
450 | DEF_VEC_O(tdesc_arch_reg); | |
451 | ||
123dc839 DJ |
452 | struct tdesc_arch_data |
453 | { | |
ad068eab | 454 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
455 | During initialization of the gdbarch this list is used to store |
456 | registers which the architecture assigns a fixed register number. | |
457 | Registers which are NULL in this array, or off the end, are | |
458 | treated as zero-sized and nameless (i.e. placeholders in the | |
459 | numbering). */ | |
ad068eab | 460 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
461 | |
462 | /* Functions which report the register name, type, and reggroups for | |
463 | pseudo-registers. */ | |
464 | gdbarch_register_name_ftype *pseudo_register_name; | |
465 | gdbarch_register_type_ftype *pseudo_register_type; | |
466 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
467 | }; |
468 | ||
6ecd4729 PA |
469 | /* Info about an inferior's target description. There's one of these |
470 | for each inferior. */ | |
424163ea | 471 | |
6ecd4729 PA |
472 | struct target_desc_info |
473 | { | |
474 | /* A flag indicating that a description has already been fetched | |
475 | from the target, so it should not be queried again. */ | |
476 | ||
477 | int fetched; | |
424163ea | 478 | |
6ecd4729 PA |
479 | /* The description fetched from the target, or NULL if the target |
480 | did not supply any description. Only valid when | |
481 | target_desc_fetched is set. Only the description initialization | |
482 | code should access this; normally, the description should be | |
483 | accessed through the gdbarch object. */ | |
424163ea | 484 | |
6ecd4729 | 485 | const struct target_desc *tdesc; |
424163ea | 486 | |
6ecd4729 PA |
487 | /* The filename to read a target description from, as set by "set |
488 | tdesc filename ..." */ | |
424163ea | 489 | |
6ecd4729 PA |
490 | char *filename; |
491 | }; | |
23181151 | 492 | |
6ecd4729 PA |
493 | /* Get the inferior INF's target description info, allocating one on |
494 | the stop if necessary. */ | |
23181151 | 495 | |
6ecd4729 PA |
496 | static struct target_desc_info * |
497 | get_tdesc_info (struct inferior *inf) | |
498 | { | |
499 | if (inf->tdesc_info == NULL) | |
500 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
501 | return inf->tdesc_info; | |
502 | } | |
23181151 | 503 | |
123dc839 DJ |
504 | /* A handle for architecture-specific data associated with the |
505 | target description (see struct tdesc_arch_data). */ | |
506 | ||
507 | static struct gdbarch_data *tdesc_data; | |
508 | ||
6ecd4729 PA |
509 | /* See target-descriptions.h. */ |
510 | ||
511 | int | |
512 | target_desc_info_from_user_p (struct target_desc_info *info) | |
513 | { | |
514 | return info != NULL && info->filename != NULL; | |
515 | } | |
516 | ||
517 | /* See target-descriptions.h. */ | |
518 | ||
519 | void | |
520 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
521 | { | |
522 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
523 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
524 | ||
525 | dest->fetched = src->fetched; | |
526 | dest->tdesc = src->tdesc; | |
527 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
528 | } | |
529 | ||
530 | /* See target-descriptions.h. */ | |
531 | ||
532 | void | |
533 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
534 | { | |
535 | if (tdesc_info != NULL) | |
536 | { | |
537 | xfree (tdesc_info->filename); | |
538 | xfree (tdesc_info); | |
539 | } | |
540 | } | |
541 | ||
542 | /* Convenience helper macros. */ | |
543 | ||
544 | #define target_desc_fetched \ | |
545 | get_tdesc_info (current_inferior ())->fetched | |
546 | #define current_target_desc \ | |
547 | get_tdesc_info (current_inferior ())->tdesc | |
548 | #define target_description_filename \ | |
549 | get_tdesc_info (current_inferior ())->filename | |
550 | ||
551 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
552 | ||
553 | static char *tdesc_filename_cmd_string; | |
554 | ||
424163ea DJ |
555 | /* Fetch the current target's description, and switch the current |
556 | architecture to one which incorporates that description. */ | |
557 | ||
558 | void | |
559 | target_find_description (void) | |
560 | { | |
561 | /* If we've already fetched a description from the target, don't do | |
562 | it again. This allows a target to fetch the description early, | |
563 | during its to_open or to_create_inferior, if it needs extra | |
564 | information about the target to initialize. */ | |
565 | if (target_desc_fetched) | |
566 | return; | |
567 | ||
568 | /* The current architecture should not have any target description | |
569 | specified. It should have been cleared, e.g. when we | |
570 | disconnected from the previous target. */ | |
f5656ead | 571 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 572 | |
23181151 DJ |
573 | /* First try to fetch an XML description from the user-specified |
574 | file. */ | |
575 | current_target_desc = NULL; | |
576 | if (target_description_filename != NULL | |
577 | && *target_description_filename != '\0') | |
578 | current_target_desc | |
579 | = file_read_description_xml (target_description_filename); | |
580 | ||
581 | /* Next try to read the description from the current target using | |
582 | target objects. */ | |
583 | if (current_target_desc == NULL) | |
584 | current_target_desc = target_read_description_xml (¤t_target); | |
585 | ||
586 | /* If that failed try a target-specific hook. */ | |
587 | if (current_target_desc == NULL) | |
588 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
589 | |
590 | /* If a non-NULL description was returned, then update the current | |
591 | architecture. */ | |
592 | if (current_target_desc) | |
593 | { | |
594 | struct gdbarch_info info; | |
595 | ||
596 | gdbarch_info_init (&info); | |
597 | info.target_desc = current_target_desc; | |
598 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
599 | warning (_("Architecture rejected target-supplied description")); |
600 | else | |
601 | { | |
602 | struct tdesc_arch_data *data; | |
603 | ||
19ba03f4 SM |
604 | data = ((struct tdesc_arch_data *) |
605 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 606 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 607 | && data->arch_regs == NULL) |
123dc839 DJ |
608 | warning (_("Target-supplied registers are not supported " |
609 | "by the current architecture")); | |
610 | } | |
424163ea DJ |
611 | } |
612 | ||
613 | /* Now that we know this description is usable, record that we | |
614 | fetched it. */ | |
615 | target_desc_fetched = 1; | |
616 | } | |
617 | ||
618 | /* Discard any description fetched from the current target, and switch | |
619 | the current architecture to one with no target description. */ | |
620 | ||
621 | void | |
622 | target_clear_description (void) | |
623 | { | |
624 | struct gdbarch_info info; | |
625 | ||
626 | if (!target_desc_fetched) | |
627 | return; | |
628 | ||
629 | target_desc_fetched = 0; | |
630 | current_target_desc = NULL; | |
631 | ||
632 | gdbarch_info_init (&info); | |
633 | if (!gdbarch_update_p (info)) | |
634 | internal_error (__FILE__, __LINE__, | |
635 | _("Could not remove target-supplied description")); | |
636 | } | |
637 | ||
638 | /* Return the global current target description. This should only be | |
639 | used by gdbarch initialization code; most access should be through | |
640 | an existing gdbarch. */ | |
641 | ||
642 | const struct target_desc * | |
643 | target_current_description (void) | |
644 | { | |
645 | if (target_desc_fetched) | |
646 | return current_target_desc; | |
647 | ||
648 | return NULL; | |
649 | } | |
e35359c5 UW |
650 | |
651 | /* Return non-zero if this target description is compatible | |
652 | with the given BFD architecture. */ | |
653 | ||
654 | int | |
655 | tdesc_compatible_p (const struct target_desc *target_desc, | |
656 | const struct bfd_arch_info *arch) | |
657 | { | |
40e2a983 | 658 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
659 | { |
660 | if (compat == arch | |
661 | || arch->compatible (arch, compat) | |
662 | || compat->compatible (compat, arch)) | |
663 | return 1; | |
664 | } | |
665 | ||
666 | return 0; | |
667 | } | |
23181151 DJ |
668 | \f |
669 | ||
123dc839 | 670 | /* Direct accessors for target descriptions. */ |
424163ea | 671 | |
29709017 DJ |
672 | /* Return the string value of a property named KEY, or NULL if the |
673 | property was not specified. */ | |
674 | ||
675 | const char * | |
676 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
677 | { | |
129c10bc SM |
678 | for (const property &prop : target_desc->properties) |
679 | if (prop.key == key) | |
680 | return prop.value.c_str (); | |
29709017 DJ |
681 | |
682 | return NULL; | |
683 | } | |
684 | ||
23181151 DJ |
685 | /* Return the BFD architecture associated with this target |
686 | description, or NULL if no architecture was specified. */ | |
687 | ||
688 | const struct bfd_arch_info * | |
689 | tdesc_architecture (const struct target_desc *target_desc) | |
690 | { | |
691 | return target_desc->arch; | |
692 | } | |
08d16641 PA |
693 | |
694 | /* Return the OSABI associated with this target description, or | |
695 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
696 | ||
697 | enum gdb_osabi | |
698 | tdesc_osabi (const struct target_desc *target_desc) | |
699 | { | |
700 | return target_desc->osabi; | |
701 | } | |
702 | ||
23181151 DJ |
703 | \f |
704 | ||
123dc839 DJ |
705 | /* Return 1 if this target description includes any registers. */ |
706 | ||
707 | int | |
708 | tdesc_has_registers (const struct target_desc *target_desc) | |
709 | { | |
123dc839 DJ |
710 | if (target_desc == NULL) |
711 | return 0; | |
712 | ||
3eea796c | 713 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 714 | if (!feature->registers.empty ()) |
123dc839 DJ |
715 | return 1; |
716 | ||
717 | return 0; | |
718 | } | |
719 | ||
720 | /* Return the feature with the given name, if present, or NULL if | |
721 | the named feature is not found. */ | |
722 | ||
723 | const struct tdesc_feature * | |
724 | tdesc_find_feature (const struct target_desc *target_desc, | |
725 | const char *name) | |
726 | { | |
3eea796c | 727 | for (const tdesc_feature_up &feature : target_desc->features) |
f65ff9f9 | 728 | if (feature->name == name) |
3eea796c | 729 | return feature.get (); |
123dc839 DJ |
730 | |
731 | return NULL; | |
732 | } | |
733 | ||
734 | /* Return the name of FEATURE. */ | |
735 | ||
736 | const char * | |
737 | tdesc_feature_name (const struct tdesc_feature *feature) | |
738 | { | |
f65ff9f9 | 739 | return feature->name.c_str (); |
123dc839 DJ |
740 | } |
741 | ||
ad068eab UW |
742 | /* Predefined types. */ |
743 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 744 | { |
81516450 | 745 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
746 | { "int8", TDESC_TYPE_INT8 }, |
747 | { "int16", TDESC_TYPE_INT16 }, | |
748 | { "int32", TDESC_TYPE_INT32 }, | |
749 | { "int64", TDESC_TYPE_INT64 }, | |
750 | { "int128", TDESC_TYPE_INT128 }, | |
751 | { "uint8", TDESC_TYPE_UINT8 }, | |
752 | { "uint16", TDESC_TYPE_UINT16 }, | |
753 | { "uint32", TDESC_TYPE_UINT32 }, | |
754 | { "uint64", TDESC_TYPE_UINT64 }, | |
755 | { "uint128", TDESC_TYPE_UINT128 }, | |
756 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
757 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
758 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
759 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 760 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 761 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 762 | }; |
81adfced | 763 | |
81516450 DE |
764 | /* Lookup a predefined type. */ |
765 | ||
766 | static struct tdesc_type * | |
767 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
768 | { | |
798a7429 | 769 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
81516450 DE |
770 | if (tdesc_predefined_types[ix].kind == kind) |
771 | return &tdesc_predefined_types[ix]; | |
772 | ||
773 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
774 | } | |
775 | ||
f49ff000 | 776 | /* See arch/tdesc.h. */ |
123dc839 | 777 | |
ad068eab | 778 | struct tdesc_type * |
123dc839 DJ |
779 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
780 | { | |
781 | int ix; | |
ad068eab | 782 | struct tdesc_type *type; |
123dc839 DJ |
783 | |
784 | /* First try target-defined types. */ | |
ad068eab UW |
785 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
786 | if (strcmp (type->name, id) == 0) | |
787 | return type; | |
123dc839 | 788 | |
81adfced DJ |
789 | /* Next try the predefined types. */ |
790 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
791 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 792 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
793 | |
794 | return NULL; | |
795 | } | |
ad068eab | 796 | |
9fd3625f L |
797 | /* Lookup type associated with ID. */ |
798 | ||
799 | struct type * | |
800 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
801 | { | |
802 | struct tdesc_arch_reg *reg; | |
803 | struct tdesc_arch_data *data; | |
804 | int i, num_regs; | |
805 | ||
19ba03f4 | 806 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
9fd3625f L |
807 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); |
808 | for (i = 0; i < num_regs; i++) | |
809 | { | |
810 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); | |
811 | if (reg->reg | |
812 | && reg->reg->tdesc_type | |
813 | && reg->type | |
814 | && strcmp (id, reg->reg->tdesc_type->name) == 0) | |
815 | return reg->type; | |
816 | } | |
817 | ||
818 | return NULL; | |
819 | } | |
820 | ||
ad068eab UW |
821 | /* Construct, if necessary, and return the GDB type implementing target |
822 | type TDESC_TYPE for architecture GDBARCH. */ | |
823 | ||
824 | static struct type * | |
825 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
826 | { | |
9fd3625f L |
827 | struct type *type; |
828 | ||
ad068eab UW |
829 | switch (tdesc_type->kind) |
830 | { | |
831 | /* Predefined types. */ | |
81516450 DE |
832 | case TDESC_TYPE_BOOL: |
833 | return builtin_type (gdbarch)->builtin_bool; | |
834 | ||
ad068eab | 835 | case TDESC_TYPE_INT8: |
df4df182 | 836 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
837 | |
838 | case TDESC_TYPE_INT16: | |
df4df182 | 839 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
840 | |
841 | case TDESC_TYPE_INT32: | |
df4df182 | 842 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
843 | |
844 | case TDESC_TYPE_INT64: | |
df4df182 | 845 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
846 | |
847 | case TDESC_TYPE_INT128: | |
df4df182 | 848 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
849 | |
850 | case TDESC_TYPE_UINT8: | |
df4df182 | 851 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
852 | |
853 | case TDESC_TYPE_UINT16: | |
df4df182 | 854 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
855 | |
856 | case TDESC_TYPE_UINT32: | |
df4df182 | 857 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
858 | |
859 | case TDESC_TYPE_UINT64: | |
df4df182 | 860 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
861 | |
862 | case TDESC_TYPE_UINT128: | |
df4df182 | 863 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
864 | |
865 | case TDESC_TYPE_CODE_PTR: | |
866 | return builtin_type (gdbarch)->builtin_func_ptr; | |
867 | ||
868 | case TDESC_TYPE_DATA_PTR: | |
869 | return builtin_type (gdbarch)->builtin_data_ptr; | |
870 | ||
9fd3625f L |
871 | default: |
872 | break; | |
873 | } | |
874 | ||
875 | type = tdesc_find_type (gdbarch, tdesc_type->name); | |
876 | if (type) | |
877 | return type; | |
878 | ||
879 | switch (tdesc_type->kind) | |
880 | { | |
ad068eab | 881 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 882 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 883 | floatformats_ieee_single); |
ad068eab UW |
884 | |
885 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 886 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 887 | floatformats_ieee_double); |
ad068eab UW |
888 | |
889 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 890 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 891 | floatformats_arm_ext); |
ad068eab | 892 | |
9fd3625f L |
893 | case TDESC_TYPE_I387_EXT: |
894 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
895 | floatformats_i387_ext); | |
896 | ||
ad068eab UW |
897 | /* Types defined by a target feature. */ |
898 | case TDESC_TYPE_VECTOR: | |
899 | { | |
900 | struct type *type, *field_type; | |
901 | ||
902 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
903 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
904 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
905 | ||
906 | return type; | |
907 | } | |
908 | ||
f5dff777 DJ |
909 | case TDESC_TYPE_STRUCT: |
910 | { | |
911 | struct type *type, *field_type; | |
912 | struct tdesc_type_field *f; | |
913 | int ix; | |
914 | ||
915 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); | |
916 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
917 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
918 | ||
919 | for (ix = 0; | |
920 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
921 | ix++) | |
922 | { | |
81516450 | 923 | if (f->start != -1 && f->end != -1) |
f5dff777 DJ |
924 | { |
925 | /* Bitfield. */ | |
926 | struct field *fld; | |
927 | struct type *field_type; | |
928 | int bitsize, total_size; | |
929 | ||
81516450 | 930 | /* This invariant should be preserved while creating types. */ |
f5dff777 | 931 | gdb_assert (tdesc_type->u.u.size != 0); |
81516450 DE |
932 | if (f->type != NULL) |
933 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
934 | else if (tdesc_type->u.u.size > 4) | |
f5dff777 DJ |
935 | field_type = builtin_type (gdbarch)->builtin_uint64; |
936 | else | |
937 | field_type = builtin_type (gdbarch)->builtin_uint32; | |
938 | ||
939 | fld = append_composite_type_field_raw (type, xstrdup (f->name), | |
940 | field_type); | |
941 | ||
942 | /* For little-endian, BITPOS counts from the LSB of | |
943 | the structure and marks the LSB of the field. For | |
944 | big-endian, BITPOS counts from the MSB of the | |
945 | structure and marks the MSB of the field. Either | |
946 | way, it is the number of bits to the "left" of the | |
947 | field. To calculate this in big-endian, we need | |
948 | the total size of the structure. */ | |
949 | bitsize = f->end - f->start + 1; | |
950 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; | |
951 | if (gdbarch_bits_big_endian (gdbarch)) | |
f41f5e61 | 952 | SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize); |
f5dff777 | 953 | else |
f41f5e61 | 954 | SET_FIELD_BITPOS (fld[0], f->start); |
f5dff777 DJ |
955 | FIELD_BITSIZE (fld[0]) = bitsize; |
956 | } | |
957 | else | |
958 | { | |
81516450 | 959 | gdb_assert (f->start == -1 && f->end == -1); |
f5dff777 DJ |
960 | field_type = tdesc_gdb_type (gdbarch, f->type); |
961 | append_composite_type_field (type, xstrdup (f->name), | |
962 | field_type); | |
963 | } | |
964 | } | |
965 | ||
966 | if (tdesc_type->u.u.size != 0) | |
967 | TYPE_LENGTH (type) = tdesc_type->u.u.size; | |
968 | return type; | |
969 | } | |
970 | ||
ad068eab UW |
971 | case TDESC_TYPE_UNION: |
972 | { | |
973 | struct type *type, *field_type; | |
974 | struct tdesc_type_field *f; | |
975 | int ix; | |
976 | ||
e9bb382b | 977 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
ad068eab UW |
978 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
979 | ||
980 | for (ix = 0; | |
981 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
982 | ix++) | |
983 | { | |
984 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
985 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
986 | ||
f5dff777 | 987 | /* If any of the children of a union are vectors, flag the |
ad068eab UW |
988 | union as a vector also. This allows e.g. a union of two |
989 | vector types to show up automatically in "info vector". */ | |
990 | if (TYPE_VECTOR (field_type)) | |
991 | TYPE_VECTOR (type) = 1; | |
992 | } | |
f5dff777 DJ |
993 | return type; |
994 | } | |
995 | ||
996 | case TDESC_TYPE_FLAGS: | |
997 | { | |
81516450 | 998 | struct tdesc_type_field *f; |
f5dff777 DJ |
999 | int ix; |
1000 | ||
3494b66d | 1001 | type = arch_flags_type (gdbarch, tdesc_type->name, |
77b7c781 | 1002 | tdesc_type->u.u.size * TARGET_CHAR_BIT); |
81516450 DE |
1003 | for (ix = 0; |
1004 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
1005 | ix++) | |
1006 | { | |
1007 | struct type *field_type; | |
1008 | int bitsize = f->end - f->start + 1; | |
1009 | ||
1010 | gdb_assert (f->type != NULL); | |
1011 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
1012 | append_flags_type_field (type, f->start, bitsize, | |
1013 | field_type, f->name); | |
1014 | } | |
1015 | ||
1016 | return type; | |
1017 | } | |
1018 | ||
1019 | case TDESC_TYPE_ENUM: | |
1020 | { | |
1021 | struct tdesc_type_field *f; | |
1022 | int ix; | |
1023 | ||
1024 | type = arch_type (gdbarch, TYPE_CODE_ENUM, | |
77b7c781 UW |
1025 | tdesc_type->u.u.size * TARGET_CHAR_BIT, |
1026 | tdesc_type->name); | |
81516450 | 1027 | TYPE_UNSIGNED (type) = 1; |
f5dff777 | 1028 | for (ix = 0; |
81516450 | 1029 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
f5dff777 | 1030 | ix++) |
81516450 DE |
1031 | { |
1032 | struct field *fld | |
1033 | = append_composite_type_field_raw (type, xstrdup (f->name), | |
1034 | NULL); | |
1035 | ||
1036 | SET_FIELD_BITPOS (fld[0], f->start); | |
1037 | } | |
ad068eab UW |
1038 | |
1039 | return type; | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | internal_error (__FILE__, __LINE__, | |
1044 | "Type \"%s\" has an unknown kind %d", | |
1045 | tdesc_type->name, tdesc_type->kind); | |
1046 | } | |
123dc839 DJ |
1047 | \f |
1048 | ||
1049 | /* Support for registers from target descriptions. */ | |
1050 | ||
1051 | /* Construct the per-gdbarch data. */ | |
1052 | ||
1053 | static void * | |
1054 | tdesc_data_init (struct obstack *obstack) | |
1055 | { | |
1056 | struct tdesc_arch_data *data; | |
1057 | ||
1058 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
1059 | return data; | |
1060 | } | |
1061 | ||
1062 | /* Similar, but for the temporary copy used during architecture | |
1063 | initialization. */ | |
1064 | ||
1065 | struct tdesc_arch_data * | |
1066 | tdesc_data_alloc (void) | |
1067 | { | |
41bf6aca | 1068 | return XCNEW (struct tdesc_arch_data); |
123dc839 DJ |
1069 | } |
1070 | ||
1071 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
1072 | to be used (for instance if it was unsuitable for the | |
1073 | architecture). */ | |
1074 | ||
1075 | void | |
1076 | tdesc_data_cleanup (void *data_untyped) | |
1077 | { | |
19ba03f4 | 1078 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 1079 | |
ad068eab | 1080 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
1081 | xfree (data); |
1082 | } | |
1083 | ||
1084 | /* Search FEATURE for a register named NAME. */ | |
1085 | ||
7cc46491 DJ |
1086 | static struct tdesc_reg * |
1087 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
1088 | const char *name) | |
123dc839 | 1089 | { |
c9c895b9 | 1090 | for (const tdesc_reg_up ® : feature->registers) |
123dc839 | 1091 | if (strcasecmp (reg->name, name) == 0) |
c9c895b9 | 1092 | return reg.get (); |
123dc839 | 1093 | |
7cc46491 DJ |
1094 | return NULL; |
1095 | } | |
1096 | ||
1097 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
1098 | ||
1099 | int | |
1100 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
1101 | struct tdesc_arch_data *data, | |
1102 | int regno, const char *name) | |
1103 | { | |
ad068eab | 1104 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
1105 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
1106 | ||
1107 | if (reg == NULL) | |
1108 | return 0; | |
1109 | ||
1110 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
1111 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
1112 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
1113 | ||
1114 | arch_reg.reg = reg; | |
1115 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 1116 | return 1; |
123dc839 DJ |
1117 | } |
1118 | ||
58d6951d DJ |
1119 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
1120 | register number to it. */ | |
1121 | ||
1122 | int | |
1123 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
1124 | const char *name) | |
1125 | { | |
1126 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1127 | ||
1128 | if (reg == NULL) | |
1129 | return 0; | |
1130 | ||
1131 | return 1; | |
1132 | } | |
1133 | ||
7cc46491 DJ |
1134 | /* Search FEATURE for a register whose name is in NAMES and assign |
1135 | REGNO to it. */ | |
123dc839 DJ |
1136 | |
1137 | int | |
1138 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
1139 | struct tdesc_arch_data *data, | |
1140 | int regno, const char *const names[]) | |
1141 | { | |
1142 | int i; | |
1143 | ||
1144 | for (i = 0; names[i] != NULL; i++) | |
1145 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
1146 | return 1; | |
1147 | ||
1148 | return 0; | |
1149 | } | |
1150 | ||
7cc46491 DJ |
1151 | /* Search FEATURE for a register named NAME, and return its size in |
1152 | bits. The register must exist. */ | |
1153 | ||
1154 | int | |
1155 | tdesc_register_size (const struct tdesc_feature *feature, | |
1156 | const char *name) | |
1157 | { | |
1158 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1159 | ||
1160 | gdb_assert (reg != NULL); | |
1161 | return reg->bitsize; | |
1162 | } | |
1163 | ||
123dc839 DJ |
1164 | /* Look up a register by its GDB internal register number. */ |
1165 | ||
ad068eab UW |
1166 | static struct tdesc_arch_reg * |
1167 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 1168 | { |
123dc839 DJ |
1169 | struct tdesc_arch_data *data; |
1170 | ||
19ba03f4 | 1171 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab UW |
1172 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
1173 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
1174 | else |
1175 | return NULL; | |
1176 | } | |
1177 | ||
ad068eab UW |
1178 | static struct tdesc_reg * |
1179 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
1180 | { | |
1181 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 1182 | |
ad068eab UW |
1183 | return reg? reg->reg : NULL; |
1184 | } | |
1185 | ||
f8b73d13 DJ |
1186 | /* Return the name of register REGNO, from the target description or |
1187 | from an architecture-provided pseudo_register_name method. */ | |
1188 | ||
1189 | const char * | |
d93859e2 | 1190 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 1191 | { |
d93859e2 UW |
1192 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1193 | int num_regs = gdbarch_num_regs (gdbarch); | |
1194 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
1195 | |
1196 | if (reg != NULL) | |
1197 | return reg->name; | |
1198 | ||
1199 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1200 | { | |
19ba03f4 SM |
1201 | struct tdesc_arch_data *data |
1202 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1203 | |
123dc839 | 1204 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 1205 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
1206 | } |
1207 | ||
1208 | return ""; | |
1209 | } | |
1210 | ||
58d6951d | 1211 | struct type * |
123dc839 DJ |
1212 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
1213 | { | |
ad068eab UW |
1214 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
1215 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1216 | int num_regs = gdbarch_num_regs (gdbarch); |
1217 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1218 | ||
1219 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1220 | { | |
19ba03f4 SM |
1221 | struct tdesc_arch_data *data |
1222 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1223 | |
123dc839 DJ |
1224 | gdb_assert (data->pseudo_register_type != NULL); |
1225 | return data->pseudo_register_type (gdbarch, regno); | |
1226 | } | |
1227 | ||
1228 | if (reg == NULL) | |
1229 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1230 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1231 | |
ad068eab | 1232 | if (arch_reg->type == NULL) |
123dc839 | 1233 | { |
ad068eab UW |
1234 | /* First check for a predefined or target defined type. */ |
1235 | if (reg->tdesc_type) | |
1236 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
1237 | ||
1238 | /* Next try size-sensitive type shortcuts. */ | |
1239 | else if (strcmp (reg->type, "float") == 0) | |
1240 | { | |
1241 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1242 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1243 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1244 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1245 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1246 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1247 | else | |
1248 | { | |
1249 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1250 | reg->name, reg->bitsize); | |
1251 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1252 | } | |
1253 | } | |
1254 | else if (strcmp (reg->type, "int") == 0) | |
1255 | { | |
1256 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1257 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1258 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1259 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1260 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1261 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1262 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1263 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1264 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1265 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1266 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1267 | /* A bit desperate by this point... */ |
ad068eab UW |
1268 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1269 | else | |
1270 | { | |
1271 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1272 | reg->name, reg->bitsize); | |
1273 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1274 | } | |
1275 | } | |
1276 | ||
1277 | if (arch_reg->type == NULL) | |
1278 | internal_error (__FILE__, __LINE__, | |
1279 | "Register \"%s\" has an unknown type \"%s\"", | |
1280 | reg->name, reg->type); | |
123dc839 | 1281 | } |
123dc839 | 1282 | |
ad068eab | 1283 | return arch_reg->type; |
123dc839 DJ |
1284 | } |
1285 | ||
1286 | static int | |
1287 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1288 | { | |
1289 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1290 | ||
1291 | if (reg != NULL) | |
1292 | return reg->target_regnum; | |
1293 | else | |
1294 | return -1; | |
1295 | } | |
1296 | ||
1297 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
1298 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
1299 | Unlike a gdbarch register_reggroup_p method, this function will |
1300 | return -1 if it does not know; the caller should handle registers | |
1301 | with no specified group. | |
123dc839 DJ |
1302 | |
1303 | Arbitrary strings (other than "general", "float", and "vector") | |
1304 | from the description are not used; they cause the register to be | |
1305 | displayed in "info all-registers" but excluded from "info | |
1306 | registers" et al. The names of containing features are also not | |
1307 | used. This might be extended to display registers in some more | |
1308 | useful groupings. | |
1309 | ||
1310 | The save-restore flag is also implemented here. */ | |
1311 | ||
f8b73d13 DJ |
1312 | int |
1313 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1314 | struct reggroup *reggroup) | |
123dc839 | 1315 | { |
123dc839 DJ |
1316 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1317 | ||
123dc839 DJ |
1318 | if (reg != NULL && reg->group != NULL) |
1319 | { | |
1320 | int general_p = 0, float_p = 0, vector_p = 0; | |
1321 | ||
1322 | if (strcmp (reg->group, "general") == 0) | |
1323 | general_p = 1; | |
1324 | else if (strcmp (reg->group, "float") == 0) | |
1325 | float_p = 1; | |
1326 | else if (strcmp (reg->group, "vector") == 0) | |
1327 | vector_p = 1; | |
1328 | ||
1329 | if (reggroup == float_reggroup) | |
1330 | return float_p; | |
1331 | ||
1332 | if (reggroup == vector_reggroup) | |
1333 | return vector_p; | |
1334 | ||
1335 | if (reggroup == general_reggroup) | |
1336 | return general_p; | |
1337 | } | |
1338 | ||
1339 | if (reg != NULL | |
1340 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1341 | return reg->save_restore; | |
1342 | ||
f8b73d13 DJ |
1343 | return -1; |
1344 | } | |
1345 | ||
1346 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1347 | group specified go to the default reggroup function and are handled | |
1348 | by type. */ | |
1349 | ||
1350 | static int | |
1351 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1352 | struct reggroup *reggroup) | |
1353 | { | |
1354 | int num_regs = gdbarch_num_regs (gdbarch); | |
1355 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1356 | int ret; | |
1357 | ||
1358 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1359 | { | |
19ba03f4 SM |
1360 | struct tdesc_arch_data *data |
1361 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1362 | |
58d6951d DJ |
1363 | if (data->pseudo_register_reggroup_p != NULL) |
1364 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1365 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1366 | } |
1367 | ||
1368 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1369 | if (ret != -1) | |
1370 | return ret; | |
1371 | ||
123dc839 DJ |
1372 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1373 | } | |
1374 | ||
1375 | /* Record architecture-specific functions to call for pseudo-register | |
1376 | support. */ | |
1377 | ||
1378 | void | |
1379 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1380 | gdbarch_register_name_ftype *pseudo_name) | |
1381 | { | |
19ba03f4 SM |
1382 | struct tdesc_arch_data *data |
1383 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1384 | |
1385 | data->pseudo_register_name = pseudo_name; | |
1386 | } | |
1387 | ||
1388 | void | |
1389 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1390 | gdbarch_register_type_ftype *pseudo_type) | |
1391 | { | |
19ba03f4 SM |
1392 | struct tdesc_arch_data *data |
1393 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1394 | |
1395 | data->pseudo_register_type = pseudo_type; | |
1396 | } | |
1397 | ||
1398 | void | |
1399 | set_tdesc_pseudo_register_reggroup_p | |
1400 | (struct gdbarch *gdbarch, | |
1401 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1402 | { | |
19ba03f4 SM |
1403 | struct tdesc_arch_data *data |
1404 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1405 | |
1406 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1407 | } | |
1408 | ||
1409 | /* Update GDBARCH to use the target description for registers. */ | |
1410 | ||
1411 | void | |
1412 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1413 | const struct target_desc *target_desc, |
123dc839 DJ |
1414 | struct tdesc_arch_data *early_data) |
1415 | { | |
1416 | int num_regs = gdbarch_num_regs (gdbarch); | |
123dc839 | 1417 | struct tdesc_arch_data *data; |
ad068eab | 1418 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
1419 | htab_t reg_hash; |
1420 | ||
123dc839 DJ |
1421 | /* We can't use the description for registers if it doesn't describe |
1422 | any. This function should only be called after validating | |
1423 | registers, so the caller should know that registers are | |
1424 | included. */ | |
1425 | gdb_assert (tdesc_has_registers (target_desc)); | |
1426 | ||
19ba03f4 | 1427 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1428 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
1429 | xfree (early_data); |
1430 | ||
1431 | /* Build up a set of all registers, so that we can assign register | |
1432 | numbers where needed. The hash table expands as necessary, so | |
1433 | the initial size is arbitrary. */ | |
1434 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
3eea796c | 1435 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 1436 | for (const tdesc_reg_up ® : feature->registers) |
123dc839 | 1437 | { |
c9c895b9 | 1438 | void **slot = htab_find_slot (reg_hash, reg.get (), INSERT); |
123dc839 | 1439 | |
c9c895b9 | 1440 | *slot = reg.get (); |
123dc839 DJ |
1441 | } |
1442 | ||
1443 | /* Remove any registers which were assigned numbers by the | |
1444 | architecture. */ | |
c9c895b9 | 1445 | for (int ixr = 0; |
ad068eab UW |
1446 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); |
1447 | ixr++) | |
1448 | if (arch_reg->reg) | |
1449 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
1450 | |
1451 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1452 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1453 | Iterate over the features, not the hash table, so that the order |
1454 | matches that in the target description. */ | |
1455 | ||
ad068eab UW |
1456 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1457 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1458 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
3eea796c | 1459 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 SM |
1460 | for (const tdesc_reg_up ® : feature->registers) |
1461 | if (htab_find (reg_hash, reg.get ()) != NULL) | |
123dc839 | 1462 | { |
c9c895b9 | 1463 | new_arch_reg.reg = reg.get (); |
ad068eab | 1464 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); |
123dc839 DJ |
1465 | num_regs++; |
1466 | } | |
1467 | ||
1468 | htab_delete (reg_hash); | |
1469 | ||
1470 | /* Update the architecture. */ | |
1471 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1472 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1473 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1474 | set_gdbarch_remote_register_number (gdbarch, | |
1475 | tdesc_remote_register_number); | |
1476 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1477 | } | |
1478 | \f | |
1479 | ||
f49ff000 YQ |
1480 | /* See arch/tdesc.h. */ |
1481 | ||
123dc839 DJ |
1482 | void |
1483 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1484 | int regnum, int save_restore, const char *group, | |
1485 | int bitsize, const char *type) | |
1486 | { | |
72ddacb7 YQ |
1487 | tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, |
1488 | group, bitsize, type); | |
123dc839 | 1489 | |
c9c895b9 | 1490 | feature->registers.emplace_back (reg); |
123dc839 DJ |
1491 | } |
1492 | ||
f49ff000 YQ |
1493 | /* See arch/tdesc.h. */ |
1494 | ||
ad068eab UW |
1495 | struct tdesc_type * |
1496 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1497 | struct tdesc_type *field_type, int count) | |
1498 | { | |
72ddacb7 | 1499 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_VECTOR); |
ad068eab | 1500 | |
ad068eab UW |
1501 | type->u.v.type = field_type; |
1502 | type->u.v.count = count; | |
1503 | ||
1504 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1505 | return type; | |
1506 | } | |
1507 | ||
f49ff000 YQ |
1508 | /* See arch/tdesc.h. */ |
1509 | ||
f5dff777 DJ |
1510 | struct tdesc_type * |
1511 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
1512 | { | |
72ddacb7 | 1513 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_STRUCT); |
f5dff777 DJ |
1514 | |
1515 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1516 | return type; | |
1517 | } | |
1518 | ||
f49ff000 | 1519 | /* See arch/tdesc.h. */ |
f5dff777 DJ |
1520 | |
1521 | void | |
54157a25 | 1522 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
f5dff777 DJ |
1523 | { |
1524 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1525 | gdb_assert (size > 0); |
f5dff777 DJ |
1526 | type->u.u.size = size; |
1527 | } | |
1528 | ||
f49ff000 YQ |
1529 | /* See arch/tdesc.h. */ |
1530 | ||
ad068eab UW |
1531 | struct tdesc_type * |
1532 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1533 | { | |
72ddacb7 | 1534 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_UNION); |
ad068eab UW |
1535 | |
1536 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1537 | return type; | |
1538 | } | |
1539 | ||
f49ff000 YQ |
1540 | /* See arch/tdesc.h. */ |
1541 | ||
f5dff777 DJ |
1542 | struct tdesc_type * |
1543 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
54157a25 | 1544 | int size) |
f5dff777 | 1545 | { |
72ddacb7 | 1546 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_FLAGS); |
f5dff777 | 1547 | |
54157a25 DE |
1548 | gdb_assert (size > 0); |
1549 | ||
81516450 | 1550 | type->u.u.size = size; |
f5dff777 DJ |
1551 | |
1552 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1553 | return type; | |
1554 | } | |
1555 | ||
81516450 DE |
1556 | struct tdesc_type * |
1557 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
1558 | int size) | |
1559 | { | |
72ddacb7 | 1560 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_ENUM); |
81516450 DE |
1561 | |
1562 | gdb_assert (size > 0); | |
1563 | ||
81516450 DE |
1564 | type->u.u.size = size; |
1565 | ||
1566 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1567 | return type; | |
1568 | } | |
1569 | ||
f49ff000 | 1570 | /* See arch/tdesc.h. */ |
f5dff777 | 1571 | |
ad068eab UW |
1572 | void |
1573 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1574 | struct tdesc_type *field_type) | |
1575 | { | |
1576 | struct tdesc_type_field f = { 0 }; | |
1577 | ||
f5dff777 DJ |
1578 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1579 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab UW |
1580 | |
1581 | f.name = xstrdup (field_name); | |
1582 | f.type = field_type; | |
81516450 DE |
1583 | /* Initialize these values so we know this is not a bit-field |
1584 | when we print-c-tdesc. */ | |
1585 | f.start = -1; | |
1586 | f.end = -1; | |
ad068eab UW |
1587 | |
1588 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1589 | } | |
1590 | ||
f5dff777 | 1591 | void |
81516450 DE |
1592 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
1593 | int start, int end, struct tdesc_type *field_type) | |
f5dff777 DJ |
1594 | { |
1595 | struct tdesc_type_field f = { 0 }; | |
1596 | ||
81516450 DE |
1597 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1598 | || type->kind == TDESC_TYPE_FLAGS); | |
1599 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 DJ |
1600 | |
1601 | f.name = xstrdup (field_name); | |
1602 | f.start = start; | |
1603 | f.end = end; | |
81516450 | 1604 | f.type = field_type; |
f5dff777 DJ |
1605 | |
1606 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1607 | } | |
1608 | ||
f49ff000 | 1609 | /* See arch/tdesc.h. */ |
81516450 DE |
1610 | |
1611 | void | |
1612 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, | |
1613 | int start, int end) | |
1614 | { | |
1615 | struct tdesc_type *field_type; | |
1616 | ||
1617 | gdb_assert (start >= 0 && end >= start); | |
1618 | ||
1619 | if (type->u.u.size > 4) | |
1620 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
1621 | else | |
1622 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1623 | ||
1624 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1625 | } | |
1626 | ||
f49ff000 | 1627 | /* See arch/tdesc.h. */ |
81516450 | 1628 | |
f5dff777 DJ |
1629 | void |
1630 | tdesc_add_flag (struct tdesc_type *type, int start, | |
1631 | const char *flag_name) | |
1632 | { | |
81516450 | 1633 | struct tdesc_type_field f = { 0 }; |
f5dff777 | 1634 | |
81516450 DE |
1635 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1636 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 DJ |
1637 | |
1638 | f.name = xstrdup (flag_name); | |
1639 | f.start = start; | |
81516450 DE |
1640 | f.end = start; |
1641 | f.type = tdesc_predefined_type (TDESC_TYPE_BOOL); | |
f5dff777 | 1642 | |
81516450 DE |
1643 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
1644 | } | |
1645 | ||
1646 | void | |
1647 | tdesc_add_enum_value (struct tdesc_type *type, int value, | |
1648 | const char *name) | |
1649 | { | |
1650 | struct tdesc_type_field f = { 0 }; | |
1651 | ||
1652 | gdb_assert (type->kind == TDESC_TYPE_ENUM); | |
1653 | ||
1654 | f.name = xstrdup (name); | |
1655 | f.start = value; | |
1656 | f.end = -1; | |
1657 | f.type = tdesc_predefined_type (TDESC_TYPE_INT32); | |
1658 | ||
1659 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
f5dff777 DJ |
1660 | } |
1661 | ||
f49ff000 YQ |
1662 | /* See arch/tdesc.h. */ |
1663 | ||
123dc839 | 1664 | struct tdesc_feature * |
0abe8a89 YQ |
1665 | tdesc_create_feature (struct target_desc *tdesc, const char *name, |
1666 | const char *xml) | |
123dc839 | 1667 | { |
72ddacb7 | 1668 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 | 1669 | |
3eea796c SM |
1670 | tdesc->features.emplace_back (new_feature); |
1671 | ||
123dc839 DJ |
1672 | return new_feature; |
1673 | } | |
1674 | ||
424163ea DJ |
1675 | struct target_desc * |
1676 | allocate_target_description (void) | |
1677 | { | |
b468ff4c | 1678 | return new target_desc (); |
424163ea | 1679 | } |
29709017 | 1680 | |
23181151 DJ |
1681 | static void |
1682 | free_target_description (void *arg) | |
1683 | { | |
19ba03f4 | 1684 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1685 | |
b468ff4c | 1686 | delete target_desc; |
23181151 DJ |
1687 | } |
1688 | ||
1689 | struct cleanup * | |
1690 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1691 | { | |
1692 | return make_cleanup (free_target_description, target_desc); | |
1693 | } | |
1694 | ||
e35359c5 UW |
1695 | void |
1696 | tdesc_add_compatible (struct target_desc *target_desc, | |
1697 | const struct bfd_arch_info *compatible) | |
1698 | { | |
e35359c5 UW |
1699 | /* If this instance of GDB is compiled without BFD support for the |
1700 | compatible architecture, simply ignore it -- we would not be able | |
1701 | to handle it anyway. */ | |
1702 | if (compatible == NULL) | |
1703 | return; | |
1704 | ||
40e2a983 | 1705 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
1706 | if (compat == compatible) |
1707 | internal_error (__FILE__, __LINE__, | |
1708 | _("Attempted to add duplicate " | |
1709 | "compatible architecture \"%s\""), | |
1710 | compatible->printable_name); | |
1711 | ||
40e2a983 | 1712 | target_desc->compatible.push_back (compatible); |
e35359c5 UW |
1713 | } |
1714 | ||
29709017 DJ |
1715 | void |
1716 | set_tdesc_property (struct target_desc *target_desc, | |
1717 | const char *key, const char *value) | |
1718 | { | |
29709017 DJ |
1719 | gdb_assert (key != NULL && value != NULL); |
1720 | ||
129c10bc SM |
1721 | if (tdesc_property (target_desc, key) != NULL) |
1722 | internal_error (__FILE__, __LINE__, | |
1723 | _("Attempted to add duplicate property \"%s\""), key); | |
29709017 | 1724 | |
129c10bc | 1725 | target_desc->properties.emplace_back (key, value); |
29709017 | 1726 | } |
23181151 | 1727 | |
5f035c07 YQ |
1728 | /* See arch/tdesc.h. */ |
1729 | ||
1730 | void | |
1731 | set_tdesc_architecture (struct target_desc *target_desc, | |
1732 | const char *name) | |
1733 | { | |
1734 | set_tdesc_architecture (target_desc, bfd_scan_arch (name)); | |
1735 | } | |
1736 | ||
23181151 DJ |
1737 | void |
1738 | set_tdesc_architecture (struct target_desc *target_desc, | |
1739 | const struct bfd_arch_info *arch) | |
1740 | { | |
1741 | target_desc->arch = arch; | |
1742 | } | |
08d16641 | 1743 | |
5f035c07 YQ |
1744 | /* See arch/tdesc.h. */ |
1745 | ||
1746 | void | |
1747 | set_tdesc_osabi (struct target_desc *target_desc, const char *name) | |
1748 | { | |
1749 | set_tdesc_osabi (target_desc, osabi_from_tdesc_string (name)); | |
1750 | } | |
1751 | ||
08d16641 PA |
1752 | void |
1753 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1754 | { | |
1755 | target_desc->osabi = osabi; | |
1756 | } | |
23181151 DJ |
1757 | \f |
1758 | ||
1759 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1760 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1761 | ||
1762 | /* Helper functions for the CLI commands. */ | |
1763 | ||
1764 | static void | |
981a3fb3 | 1765 | set_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1766 | { |
635c7e8a | 1767 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1768 | } |
1769 | ||
1770 | static void | |
981a3fb3 | 1771 | show_tdesc_cmd (const char *args, int from_tty) |
23181151 DJ |
1772 | { |
1773 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1774 | } | |
1775 | ||
1776 | static void | |
981a3fb3 | 1777 | unset_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1778 | { |
635c7e8a | 1779 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1780 | } |
1781 | ||
1782 | static void | |
eb4c3f4a | 1783 | set_tdesc_filename_cmd (const char *args, int from_tty, |
23181151 DJ |
1784 | struct cmd_list_element *c) |
1785 | { | |
6ecd4729 PA |
1786 | xfree (target_description_filename); |
1787 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1788 | ||
23181151 DJ |
1789 | target_clear_description (); |
1790 | target_find_description (); | |
1791 | } | |
1792 | ||
1793 | static void | |
1794 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1795 | struct cmd_list_element *c, | |
1796 | const char *value) | |
1797 | { | |
6ecd4729 PA |
1798 | value = target_description_filename; |
1799 | ||
23181151 | 1800 | if (value != NULL && *value != '\0') |
3e43a32a | 1801 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1802 | value); |
1803 | else | |
3e43a32a MS |
1804 | printf_filtered (_("The target description will be " |
1805 | "read from the target.\n")); | |
23181151 DJ |
1806 | } |
1807 | ||
1808 | static void | |
e100df1a | 1809 | unset_tdesc_filename_cmd (const char *args, int from_tty) |
23181151 DJ |
1810 | { |
1811 | xfree (target_description_filename); | |
1812 | target_description_filename = NULL; | |
1813 | target_clear_description (); | |
1814 | target_find_description (); | |
1815 | } | |
1816 | ||
6eb1e6a8 YQ |
1817 | /* Print target description in C. */ |
1818 | ||
1819 | class print_c_tdesc : public tdesc_element_visitor | |
1820 | { | |
1821 | public: | |
1822 | print_c_tdesc (std::string &filename_after_features) | |
1823 | : m_filename_after_features (filename_after_features) | |
1824 | { | |
1825 | const char *inp; | |
1826 | char *outp; | |
1827 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1828 | ||
1829 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1830 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1831 | if (*inp == '.') | |
1832 | break; | |
1833 | else if (*inp == '-') | |
1834 | *outp++ = '_'; | |
1835 | else | |
1836 | *outp++ = *inp; | |
1837 | *outp = '\0'; | |
1838 | ||
1839 | /* Standard boilerplate. */ | |
1840 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1841 | "-*- buffer-read-only: t -*- vi" | |
1842 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1843 | } |
1844 | ||
1845 | ~print_c_tdesc () | |
1846 | { | |
1847 | xfree (m_function); | |
1848 | } | |
1849 | ||
1850 | void visit_pre (const target_desc *e) override | |
1851 | { | |
25aa13e5 YQ |
1852 | printf_unfiltered (" Original: %s */\n\n", |
1853 | lbasename (m_filename_after_features.c_str ())); | |
1854 | ||
6eb1e6a8 YQ |
1855 | printf_unfiltered ("#include \"defs.h\"\n"); |
1856 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1857 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1858 | printf_unfiltered ("\n"); | |
1859 | ||
1860 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1861 | printf_unfiltered ("static void\n"); | |
1862 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1863 | printf_unfiltered ("{\n"); | |
1864 | printf_unfiltered | |
1865 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1866 | ||
1867 | if (tdesc_architecture (e) != NULL) | |
1868 | { | |
1869 | printf_unfiltered | |
1870 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1871 | tdesc_architecture (e)->printable_name); | |
1872 | printf_unfiltered ("\n"); | |
1873 | } | |
1874 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1875 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1876 | { | |
1877 | printf_unfiltered | |
1878 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1879 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1880 | printf_unfiltered ("\n"); | |
1881 | } | |
1882 | ||
40e2a983 SM |
1883 | for (const struct bfd_arch_info *compatible : e->compatible) |
1884 | printf_unfiltered | |
1885 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1886 | compatible->printable_name); | |
6eb1e6a8 | 1887 | |
40e2a983 | 1888 | if (!e->compatible.empty ()) |
6eb1e6a8 YQ |
1889 | printf_unfiltered ("\n"); |
1890 | ||
129c10bc SM |
1891 | for (const property &prop : e->properties) |
1892 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1893 | prop.key.c_str (), prop.value.c_str ()); | |
1894 | ||
6eb1e6a8 YQ |
1895 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
1896 | } | |
1897 | ||
25aa13e5 | 1898 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1899 | { |
1900 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
f65ff9f9 | 1901 | e->name.c_str ()); |
6eb1e6a8 YQ |
1902 | } |
1903 | ||
25aa13e5 YQ |
1904 | void visit_post (const tdesc_feature *e) override |
1905 | {} | |
1906 | ||
6eb1e6a8 YQ |
1907 | void visit_post (const target_desc *e) override |
1908 | { | |
1909 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1910 | printf_unfiltered ("}\n"); | |
1911 | } | |
1912 | ||
1913 | void visit (const tdesc_type *type) override | |
1914 | { | |
1915 | struct tdesc_type_field *f; | |
1916 | ||
1917 | /* Now we do some "filtering" in order to know which variables to | |
1918 | declare. This is needed because otherwise we would declare unused | |
1919 | variables `field_type' and `type'. */ | |
1920 | if (!m_printed_field_type) | |
1921 | { | |
1922 | printf_unfiltered (" struct tdesc_type *field_type;\n"); | |
1923 | m_printed_field_type = true; | |
1924 | } | |
1925 | ||
1926 | if ((type->kind == TDESC_TYPE_UNION | |
1927 | || type->kind == TDESC_TYPE_STRUCT | |
1928 | || type->kind == TDESC_TYPE_FLAGS | |
1929 | || type->kind == TDESC_TYPE_ENUM) | |
1930 | && VEC_length (tdesc_type_field, type->u.u.fields) > 0 | |
1931 | && !m_printed_type) | |
1932 | { | |
1933 | printf_unfiltered (" struct tdesc_type *type;\n"); | |
1934 | m_printed_type = true; | |
1935 | } | |
1936 | ||
1937 | switch (type->kind) | |
1938 | { | |
1939 | case TDESC_TYPE_VECTOR: | |
1940 | printf_unfiltered | |
1941 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
1942 | type->u.v.type->name); | |
1943 | printf_unfiltered | |
1944 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", | |
1945 | type->name, type->u.v.count); | |
1946 | break; | |
1947 | case TDESC_TYPE_STRUCT: | |
1948 | case TDESC_TYPE_FLAGS: | |
1949 | if (type->kind == TDESC_TYPE_STRUCT) | |
1950 | { | |
1951 | printf_unfiltered | |
1952 | (" type = tdesc_create_struct (feature, \"%s\");\n", | |
1953 | type->name); | |
1954 | if (type->u.u.size != 0) | |
1955 | printf_unfiltered | |
1956 | (" tdesc_set_struct_size (type, %d);\n", | |
1957 | type->u.u.size); | |
1958 | } | |
1959 | else | |
1960 | { | |
1961 | printf_unfiltered | |
1962 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", | |
1963 | type->name, type->u.u.size); | |
1964 | } | |
1965 | for (int ix3 = 0; | |
1966 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1967 | ix3++) | |
1968 | { | |
1969 | const char *type_name; | |
1970 | ||
1971 | gdb_assert (f->type != NULL); | |
1972 | type_name = f->type->name; | |
1973 | ||
1974 | /* To minimize changes to generated files, don't emit type | |
1975 | info for fields that have defaulted types. */ | |
1976 | if (f->start != -1) | |
1977 | { | |
1978 | gdb_assert (f->end != -1); | |
1979 | if (f->type->kind == TDESC_TYPE_BOOL) | |
1980 | { | |
1981 | gdb_assert (f->start == f->end); | |
1982 | printf_unfiltered | |
1983 | (" tdesc_add_flag (type, %d, \"%s\");\n", | |
1984 | f->start, f->name); | |
1985 | } | |
1986 | else if ((type->u.u.size == 4 | |
1987 | && f->type->kind == TDESC_TYPE_UINT32) | |
1988 | || (type->u.u.size == 8 | |
1989 | && f->type->kind == TDESC_TYPE_UINT64)) | |
1990 | { | |
1991 | printf_unfiltered | |
1992 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", | |
1993 | f->name, f->start, f->end); | |
1994 | } | |
1995 | else | |
1996 | { | |
1997 | printf_unfiltered | |
1998 | (" field_type = tdesc_named_type (feature," | |
1999 | " \"%s\");\n", | |
2000 | type_name); | |
2001 | printf_unfiltered | |
2002 | (" tdesc_add_typed_bitfield (type, \"%s\"," | |
2003 | " %d, %d, field_type);\n", | |
2004 | f->name, f->start, f->end); | |
2005 | } | |
2006 | } | |
2007 | else /* Not a bitfield. */ | |
2008 | { | |
2009 | gdb_assert (f->end == -1); | |
2010 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
2011 | printf_unfiltered | |
2012 | (" field_type = tdesc_named_type (feature," | |
2013 | " \"%s\");\n", | |
2014 | type_name); | |
2015 | printf_unfiltered | |
2016 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2017 | f->name); | |
2018 | } | |
2019 | } | |
2020 | break; | |
2021 | case TDESC_TYPE_UNION: | |
2022 | printf_unfiltered | |
2023 | (" type = tdesc_create_union (feature, \"%s\");\n", | |
2024 | type->name); | |
2025 | for (int ix3 = 0; | |
2026 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2027 | ix3++) | |
2028 | { | |
2029 | printf_unfiltered | |
2030 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
2031 | f->type->name); | |
2032 | printf_unfiltered | |
2033 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2034 | f->name); | |
2035 | } | |
2036 | break; | |
2037 | case TDESC_TYPE_ENUM: | |
2038 | printf_unfiltered | |
2039 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", | |
2040 | type->name, type->u.u.size); | |
2041 | for (int ix3 = 0; | |
2042 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2043 | ix3++) | |
2044 | printf_unfiltered | |
2045 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", | |
2046 | f->start, f->name); | |
2047 | break; | |
2048 | default: | |
2049 | error (_("C output is not supported type \"%s\"."), type->name); | |
2050 | } | |
2051 | printf_unfiltered ("\n"); | |
2052 | } | |
2053 | ||
2054 | void visit (const tdesc_reg *reg) override | |
2055 | { | |
2056 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
2057 | reg->name, reg->target_regnum, reg->save_restore); | |
2058 | if (reg->group) | |
2059 | printf_unfiltered ("\"%s\", ", reg->group); | |
2060 | else | |
2061 | printf_unfiltered ("NULL, "); | |
2062 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
2063 | } | |
2064 | ||
25aa13e5 YQ |
2065 | protected: |
2066 | std::string m_filename_after_features; | |
2067 | ||
6eb1e6a8 YQ |
2068 | private: |
2069 | char *m_function; | |
6eb1e6a8 YQ |
2070 | bool m_printed_field_type = false; |
2071 | bool m_printed_type = false; | |
2072 | }; | |
2073 | ||
25aa13e5 YQ |
2074 | /* Print target description feature in C. */ |
2075 | ||
2076 | class print_c_feature : public print_c_tdesc | |
2077 | { | |
2078 | public: | |
2079 | print_c_feature (std::string &file) | |
2080 | : print_c_tdesc (file) | |
2081 | { | |
2082 | /* Trim ".tmp". */ | |
2083 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
2084 | ||
2085 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
2086 | } | |
2087 | ||
2088 | void visit_pre (const target_desc *e) override | |
2089 | { | |
2090 | printf_unfiltered (" Original: %s */\n\n", | |
2091 | lbasename (m_filename_after_features.c_str ())); | |
2092 | ||
f49ff000 | 2093 | printf_unfiltered ("#include \"arch/tdesc.h\"\n"); |
25aa13e5 YQ |
2094 | printf_unfiltered ("\n"); |
2095 | } | |
2096 | ||
2097 | void visit_post (const target_desc *e) override | |
2098 | {} | |
2099 | ||
2100 | void visit_pre (const tdesc_feature *e) override | |
2101 | { | |
2102 | std::string name (m_filename_after_features); | |
2103 | ||
2104 | auto pos = name.find_first_of ('.'); | |
2105 | ||
2106 | name = name.substr (0, pos); | |
2107 | std::replace (name.begin (), name.end (), '/', '_'); | |
2108 | std::replace (name.begin (), name.end (), '-', '_'); | |
2109 | ||
2110 | printf_unfiltered ("static int\n"); | |
2111 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
2112 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
2113 | ||
2114 | printf_unfiltered ("{\n"); | |
2115 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
0abe8a89 YQ |
2116 | |
2117 | printf_unfiltered | |
2118 | ("\n feature = tdesc_create_feature (result, \"%s\", \"%s\");\n", | |
f65ff9f9 | 2119 | e->name.c_str (), lbasename (m_filename_after_features.c_str ())); |
25aa13e5 YQ |
2120 | } |
2121 | ||
2122 | void visit_post (const tdesc_feature *e) override | |
2123 | { | |
2124 | printf_unfiltered (" return regnum;\n"); | |
2125 | printf_unfiltered ("}\n"); | |
2126 | } | |
2127 | ||
2128 | void visit (const tdesc_reg *reg) override | |
2129 | { | |
ea03d0d3 YQ |
2130 | /* Most "reg" in XML target descriptions don't have "regnum" |
2131 | attribute, so the register number is allocated sequentially. | |
2132 | In case that reg has "regnum" attribute, register number | |
2133 | should be set by that explicitly. */ | |
2134 | ||
2135 | if (reg->target_regnum < m_next_regnum) | |
2136 | { | |
2137 | /* The integrity check, it can catch some errors on register | |
2138 | number collision, like this, | |
2139 | ||
2140 | <reg name="x0" bitsize="32"/> | |
2141 | <reg name="x1" bitsize="32"/> | |
2142 | <reg name="x2" bitsize="32"/> | |
2143 | <reg name="x3" bitsize="32"/> | |
2144 | <reg name="ps" bitsize="32" regnum="3"/> | |
2145 | ||
2146 | but it also has false negatives. The target description | |
2147 | below is correct, | |
2148 | ||
2149 | <reg name="x1" bitsize="32" regnum="1"/> | |
2150 | <reg name="x3" bitsize="32" regnum="3"/> | |
2151 | <reg name="x2" bitsize="32" regnum="2"/> | |
2152 | <reg name="x4" bitsize="32" regnum="4"/> | |
2153 | ||
2154 | but it is not a good practice, so still error on this, | |
2155 | and also print the message so that it can be saved in the | |
2156 | generated c file. */ | |
2157 | ||
2158 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
2159 | reg->target_regnum); | |
2160 | printf_unfiltered ("is not the largest number (%d).\n", | |
2161 | m_next_regnum); | |
2162 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
2163 | reg->target_regnum, m_next_regnum); | |
2164 | } | |
2165 | ||
2166 | if (reg->target_regnum > m_next_regnum) | |
2167 | { | |
2168 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
2169 | m_next_regnum = reg->target_regnum; | |
2170 | } | |
2171 | ||
25aa13e5 YQ |
2172 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
2173 | reg->name, reg->save_restore); | |
2174 | if (reg->group) | |
2175 | printf_unfiltered ("\"%s\", ", reg->group); | |
2176 | else | |
2177 | printf_unfiltered ("NULL, "); | |
2178 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
ea03d0d3 YQ |
2179 | |
2180 | m_next_regnum++; | |
25aa13e5 YQ |
2181 | } |
2182 | ||
ea03d0d3 YQ |
2183 | private: |
2184 | /* The register number to use for the next register we see. */ | |
2185 | int m_next_regnum = 0; | |
25aa13e5 YQ |
2186 | }; |
2187 | ||
81adfced | 2188 | static void |
e100df1a | 2189 | maint_print_c_tdesc_cmd (const char *args, int from_tty) |
81adfced DJ |
2190 | { |
2191 | const struct target_desc *tdesc; | |
6eb1e6a8 | 2192 | const char *filename; |
81adfced | 2193 | |
8e2141c6 YQ |
2194 | if (args == NULL) |
2195 | { | |
2196 | /* Use the global target-supplied description, not the current | |
2197 | architecture's. This lets a GDB for one architecture generate C | |
2198 | for another architecture's description, even though the gdbarch | |
2199 | initialization code will reject the new description. */ | |
2200 | tdesc = current_target_desc; | |
2201 | filename = target_description_filename; | |
2202 | } | |
2203 | else | |
2204 | { | |
2205 | /* Use the target description from the XML file. */ | |
2206 | filename = args; | |
2207 | tdesc = file_read_description_xml (filename); | |
2208 | } | |
2209 | ||
81adfced DJ |
2210 | if (tdesc == NULL) |
2211 | error (_("There is no target description to print.")); | |
2212 | ||
8e2141c6 | 2213 | if (filename == NULL) |
81adfced DJ |
2214 | error (_("The current target description did not come from an XML file.")); |
2215 | ||
6eb1e6a8 YQ |
2216 | std::string filename_after_features (filename); |
2217 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 2218 | |
6eb1e6a8 YQ |
2219 | if (loc != std::string::npos) |
2220 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 2221 | |
25aa13e5 YQ |
2222 | /* Print c files for target features instead of target descriptions, |
2223 | because c files got from target features are more flexible than the | |
2224 | counterparts. */ | |
6c73f67f YQ |
2225 | if (startswith (filename_after_features.c_str (), "i386/32bit-") |
2226 | || startswith (filename_after_features.c_str (), "i386/64bit-") | |
506fe5f4 | 2227 | || startswith (filename_after_features.c_str (), "i386/x32-core.xml") |
49bdb7ee AH |
2228 | || startswith (filename_after_features.c_str (), "tic6x-") |
2229 | || startswith (filename_after_features.c_str (), "aarch64")) | |
25aa13e5 YQ |
2230 | { |
2231 | print_c_feature v (filename_after_features); | |
81adfced | 2232 | |
25aa13e5 YQ |
2233 | tdesc->accept (v); |
2234 | } | |
2235 | else | |
2236 | { | |
2237 | print_c_tdesc v (filename_after_features); | |
2238 | ||
2239 | tdesc->accept (v); | |
2240 | } | |
81adfced DJ |
2241 | } |
2242 | ||
27d41eac YQ |
2243 | namespace selftests { |
2244 | ||
2245 | static std::vector<std::pair<const char*, const target_desc *>> xml_tdesc; | |
2246 | ||
2247 | #if GDB_SELF_TEST | |
2248 | ||
2249 | /* See target-descritpions.h. */ | |
2250 | ||
2251 | void | |
2252 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
2253 | { | |
2254 | xml_tdesc.emplace_back (xml_file, tdesc); | |
2255 | } | |
2256 | #endif | |
2257 | ||
2258 | } | |
2259 | ||
2260 | /* Check that the target descriptions created dynamically by | |
2261 | architecture-specific code equal the descriptions created from XML files | |
2262 | found in the specified directory DIR. */ | |
2263 | ||
2264 | static void | |
e100df1a | 2265 | maintenance_check_xml_descriptions (const char *dir, int from_tty) |
27d41eac YQ |
2266 | { |
2267 | if (dir == NULL) | |
2268 | error (_("Missing dir name")); | |
2269 | ||
2270 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
2271 | std::string feature_dir (dir1.get ()); | |
2272 | unsigned int failed = 0; | |
2273 | ||
2274 | for (auto const &e : selftests::xml_tdesc) | |
2275 | { | |
2276 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.first); | |
2277 | const target_desc *tdesc | |
2278 | = file_read_description_xml (tdesc_xml.data ()); | |
2279 | ||
2280 | if (tdesc == NULL || *tdesc != *e.second) | |
2281 | failed++; | |
2282 | } | |
2283 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
2284 | (long) selftests::xml_tdesc.size (), failed); | |
2285 | } | |
2286 | ||
23181151 DJ |
2287 | void |
2288 | _initialize_target_descriptions (void) | |
2289 | { | |
123dc839 DJ |
2290 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
2291 | ||
23181151 DJ |
2292 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
2293 | Set target description specific variables."), | |
2294 | &tdesc_set_cmdlist, "set tdesc ", | |
2295 | 0 /* allow-unknown */, &setlist); | |
2296 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
2297 | Show target description specific variables."), | |
2298 | &tdesc_show_cmdlist, "show tdesc ", | |
2299 | 0 /* allow-unknown */, &showlist); | |
2300 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2301 | Unset target description specific variables."), | |
2302 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2303 | 0 /* allow-unknown */, &unsetlist); | |
2304 | ||
2305 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2306 | &tdesc_filename_cmd_string, |
23181151 DJ |
2307 | _("\ |
2308 | Set the file to read for an XML target description"), _("\ | |
2309 | Show the file to read for an XML target description"), _("\ | |
2310 | When set, GDB will read the target description from a local\n\ | |
2311 | file instead of querying the remote target."), | |
2312 | set_tdesc_filename_cmd, | |
2313 | show_tdesc_filename_cmd, | |
2314 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2315 | ||
2316 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2317 | Unset the file to read for an XML target description. When unset,\n\ | |
2318 | GDB will read the description from the target."), | |
2319 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2320 | |
2321 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2322 | Print the current target description as a C source file."), | |
2323 | &maintenanceprintlist); | |
27d41eac YQ |
2324 | |
2325 | cmd_list_element *cmd; | |
2326 | ||
2327 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
2328 | maintenance_check_xml_descriptions, _("\ | |
2329 | Check the target descriptions created in GDB equal the descriptions\n\ | |
2330 | created from XML files in the directory.\n\ | |
2331 | The parameter is the directory name."), | |
2332 | &maintenancechecklist); | |
2333 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 2334 | } |