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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 | ||
3eea796c | 282 | struct tdesc_feature : tdesc_element |
123dc839 | 283 | { |
f65ff9f9 SM |
284 | tdesc_feature (const std::string &name_) |
285 | : name (name_) | |
72ddacb7 YQ |
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); | |
72ddacb7 YQ |
301 | } |
302 | ||
d6541620 | 303 | DISABLE_COPY_AND_ASSIGN (tdesc_feature); |
72ddacb7 | 304 | |
123dc839 DJ |
305 | /* The name of this feature. It may be recognized by the architecture |
306 | support code. */ | |
f65ff9f9 | 307 | std::string name; |
123dc839 DJ |
308 | |
309 | /* The registers associated with this feature. */ | |
72ddacb7 | 310 | VEC(tdesc_reg_p) *registers = NULL; |
123dc839 DJ |
311 | |
312 | /* The types associated with this feature. */ | |
72ddacb7 | 313 | VEC(tdesc_type_p) *types = NULL; |
6eb1e6a8 YQ |
314 | |
315 | void accept (tdesc_element_visitor &v) const override | |
316 | { | |
25aa13e5 | 317 | v.visit_pre (this); |
6eb1e6a8 YQ |
318 | |
319 | struct tdesc_type *type; | |
320 | ||
321 | for (int ix = 0; | |
322 | VEC_iterate (tdesc_type_p, types, ix, type); | |
323 | ix++) | |
324 | type->accept (v); | |
325 | ||
326 | struct tdesc_reg *reg; | |
327 | ||
328 | for (int ix = 0; | |
329 | VEC_iterate (tdesc_reg_p, registers, ix, reg); | |
330 | ix++) | |
331 | reg->accept (v); | |
332 | ||
6eb1e6a8 | 333 | |
25aa13e5 YQ |
334 | v.visit_post (this); |
335 | } | |
27d41eac YQ |
336 | |
337 | bool operator== (const tdesc_feature &other) const | |
338 | { | |
f65ff9f9 | 339 | if (name != other.name) |
27d41eac YQ |
340 | return false; |
341 | ||
342 | if (VEC_length (tdesc_reg_p, registers) | |
343 | != VEC_length (tdesc_reg_p, other.registers)) | |
344 | return false; | |
345 | ||
346 | struct tdesc_reg *reg; | |
347 | ||
348 | for (int ix = 0; | |
349 | VEC_iterate (tdesc_reg_p, registers, ix, reg); | |
350 | ix++) | |
351 | { | |
352 | tdesc_reg *reg2 | |
353 | = VEC_index (tdesc_reg_p, other.registers, ix); | |
354 | ||
355 | if (reg != reg2 && *reg != *reg2) | |
356 | return false; | |
357 | } | |
358 | ||
359 | if (VEC_length (tdesc_type_p, types) | |
360 | != VEC_length (tdesc_type_p, other.types)) | |
361 | return false; | |
362 | ||
363 | tdesc_type *type; | |
364 | ||
365 | for (int ix = 0; | |
366 | VEC_iterate (tdesc_type_p, types, ix, type); | |
367 | ix++) | |
368 | { | |
369 | tdesc_type *type2 | |
370 | = VEC_index (tdesc_type_p, other.types, ix); | |
371 | ||
372 | if (type != type2 && *type != *type2) | |
373 | return false; | |
374 | } | |
375 | ||
376 | return true; | |
377 | } | |
378 | ||
379 | bool operator!= (const tdesc_feature &other) const | |
380 | { | |
381 | return !(*this == other); | |
382 | } | |
383 | ||
3eea796c SM |
384 | }; |
385 | ||
386 | typedef std::unique_ptr<tdesc_feature> tdesc_feature_up; | |
123dc839 DJ |
387 | |
388 | /* A target description. */ | |
389 | ||
6eb1e6a8 | 390 | struct target_desc : tdesc_element |
424163ea | 391 | { |
b468ff4c YQ |
392 | target_desc () |
393 | {} | |
394 | ||
3eea796c | 395 | virtual ~target_desc () = default; |
b468ff4c YQ |
396 | |
397 | target_desc (const target_desc &) = delete; | |
398 | void operator= (const target_desc &) = delete; | |
399 | ||
23181151 | 400 | /* The architecture reported by the target, if any. */ |
b468ff4c | 401 | const struct bfd_arch_info *arch = NULL; |
23181151 | 402 | |
08d16641 PA |
403 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
404 | otherwise. */ | |
b468ff4c | 405 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 406 | |
e35359c5 | 407 | /* The list of compatible architectures reported by the target. */ |
40e2a983 | 408 | std::vector<const bfd_arch_info *> compatible; |
e35359c5 | 409 | |
29709017 | 410 | /* Any architecture-specific properties specified by the target. */ |
129c10bc | 411 | std::vector<property> properties; |
123dc839 DJ |
412 | |
413 | /* The features associated with this target. */ | |
3eea796c | 414 | std::vector<std::unique_ptr<tdesc_feature>> features; |
6eb1e6a8 YQ |
415 | |
416 | void accept (tdesc_element_visitor &v) const override | |
417 | { | |
418 | v.visit_pre (this); | |
419 | ||
3eea796c | 420 | for (const tdesc_feature_up &feature : features) |
6eb1e6a8 YQ |
421 | feature->accept (v); |
422 | ||
423 | v.visit_post (this); | |
424 | } | |
27d41eac YQ |
425 | |
426 | bool operator== (const target_desc &other) const | |
427 | { | |
428 | if (arch != other.arch) | |
429 | return false; | |
430 | ||
431 | if (osabi != other.osabi) | |
432 | return false; | |
433 | ||
3eea796c | 434 | if (features.size () != other.features.size ()) |
27d41eac YQ |
435 | return false; |
436 | ||
3eea796c | 437 | for (int ix = 0; ix < features.size (); ix++) |
27d41eac | 438 | { |
3eea796c SM |
439 | const tdesc_feature_up &feature1 = features[ix]; |
440 | const tdesc_feature_up &feature2 = other.features[ix]; | |
27d41eac | 441 | |
3eea796c | 442 | if (feature1 != feature2 && *feature1 != *feature2) |
27d41eac YQ |
443 | return false; |
444 | } | |
445 | ||
446 | return true; | |
447 | } | |
448 | ||
449 | bool operator!= (const target_desc &other) const | |
450 | { | |
451 | return !(*this == other); | |
452 | } | |
123dc839 DJ |
453 | }; |
454 | ||
455 | /* Per-architecture data associated with a target description. The | |
456 | target description may be shared by multiple architectures, but | |
457 | this data is private to one gdbarch. */ | |
458 | ||
ad068eab UW |
459 | typedef struct tdesc_arch_reg |
460 | { | |
461 | struct tdesc_reg *reg; | |
462 | struct type *type; | |
463 | } tdesc_arch_reg; | |
464 | DEF_VEC_O(tdesc_arch_reg); | |
465 | ||
123dc839 DJ |
466 | struct tdesc_arch_data |
467 | { | |
ad068eab | 468 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
469 | During initialization of the gdbarch this list is used to store |
470 | registers which the architecture assigns a fixed register number. | |
471 | Registers which are NULL in this array, or off the end, are | |
472 | treated as zero-sized and nameless (i.e. placeholders in the | |
473 | numbering). */ | |
ad068eab | 474 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
475 | |
476 | /* Functions which report the register name, type, and reggroups for | |
477 | pseudo-registers. */ | |
478 | gdbarch_register_name_ftype *pseudo_register_name; | |
479 | gdbarch_register_type_ftype *pseudo_register_type; | |
480 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
481 | }; |
482 | ||
6ecd4729 PA |
483 | /* Info about an inferior's target description. There's one of these |
484 | for each inferior. */ | |
424163ea | 485 | |
6ecd4729 PA |
486 | struct target_desc_info |
487 | { | |
488 | /* A flag indicating that a description has already been fetched | |
489 | from the target, so it should not be queried again. */ | |
490 | ||
491 | int fetched; | |
424163ea | 492 | |
6ecd4729 PA |
493 | /* The description fetched from the target, or NULL if the target |
494 | did not supply any description. Only valid when | |
495 | target_desc_fetched is set. Only the description initialization | |
496 | code should access this; normally, the description should be | |
497 | accessed through the gdbarch object. */ | |
424163ea | 498 | |
6ecd4729 | 499 | const struct target_desc *tdesc; |
424163ea | 500 | |
6ecd4729 PA |
501 | /* The filename to read a target description from, as set by "set |
502 | tdesc filename ..." */ | |
424163ea | 503 | |
6ecd4729 PA |
504 | char *filename; |
505 | }; | |
23181151 | 506 | |
6ecd4729 PA |
507 | /* Get the inferior INF's target description info, allocating one on |
508 | the stop if necessary. */ | |
23181151 | 509 | |
6ecd4729 PA |
510 | static struct target_desc_info * |
511 | get_tdesc_info (struct inferior *inf) | |
512 | { | |
513 | if (inf->tdesc_info == NULL) | |
514 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
515 | return inf->tdesc_info; | |
516 | } | |
23181151 | 517 | |
123dc839 DJ |
518 | /* A handle for architecture-specific data associated with the |
519 | target description (see struct tdesc_arch_data). */ | |
520 | ||
521 | static struct gdbarch_data *tdesc_data; | |
522 | ||
6ecd4729 PA |
523 | /* See target-descriptions.h. */ |
524 | ||
525 | int | |
526 | target_desc_info_from_user_p (struct target_desc_info *info) | |
527 | { | |
528 | return info != NULL && info->filename != NULL; | |
529 | } | |
530 | ||
531 | /* See target-descriptions.h. */ | |
532 | ||
533 | void | |
534 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
535 | { | |
536 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
537 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
538 | ||
539 | dest->fetched = src->fetched; | |
540 | dest->tdesc = src->tdesc; | |
541 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
542 | } | |
543 | ||
544 | /* See target-descriptions.h. */ | |
545 | ||
546 | void | |
547 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
548 | { | |
549 | if (tdesc_info != NULL) | |
550 | { | |
551 | xfree (tdesc_info->filename); | |
552 | xfree (tdesc_info); | |
553 | } | |
554 | } | |
555 | ||
556 | /* Convenience helper macros. */ | |
557 | ||
558 | #define target_desc_fetched \ | |
559 | get_tdesc_info (current_inferior ())->fetched | |
560 | #define current_target_desc \ | |
561 | get_tdesc_info (current_inferior ())->tdesc | |
562 | #define target_description_filename \ | |
563 | get_tdesc_info (current_inferior ())->filename | |
564 | ||
565 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
566 | ||
567 | static char *tdesc_filename_cmd_string; | |
568 | ||
424163ea DJ |
569 | /* Fetch the current target's description, and switch the current |
570 | architecture to one which incorporates that description. */ | |
571 | ||
572 | void | |
573 | target_find_description (void) | |
574 | { | |
575 | /* If we've already fetched a description from the target, don't do | |
576 | it again. This allows a target to fetch the description early, | |
577 | during its to_open or to_create_inferior, if it needs extra | |
578 | information about the target to initialize. */ | |
579 | if (target_desc_fetched) | |
580 | return; | |
581 | ||
582 | /* The current architecture should not have any target description | |
583 | specified. It should have been cleared, e.g. when we | |
584 | disconnected from the previous target. */ | |
f5656ead | 585 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 586 | |
23181151 DJ |
587 | /* First try to fetch an XML description from the user-specified |
588 | file. */ | |
589 | current_target_desc = NULL; | |
590 | if (target_description_filename != NULL | |
591 | && *target_description_filename != '\0') | |
592 | current_target_desc | |
593 | = file_read_description_xml (target_description_filename); | |
594 | ||
595 | /* Next try to read the description from the current target using | |
596 | target objects. */ | |
597 | if (current_target_desc == NULL) | |
598 | current_target_desc = target_read_description_xml (¤t_target); | |
599 | ||
600 | /* If that failed try a target-specific hook. */ | |
601 | if (current_target_desc == NULL) | |
602 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
603 | |
604 | /* If a non-NULL description was returned, then update the current | |
605 | architecture. */ | |
606 | if (current_target_desc) | |
607 | { | |
608 | struct gdbarch_info info; | |
609 | ||
610 | gdbarch_info_init (&info); | |
611 | info.target_desc = current_target_desc; | |
612 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
613 | warning (_("Architecture rejected target-supplied description")); |
614 | else | |
615 | { | |
616 | struct tdesc_arch_data *data; | |
617 | ||
19ba03f4 SM |
618 | data = ((struct tdesc_arch_data *) |
619 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 620 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 621 | && data->arch_regs == NULL) |
123dc839 DJ |
622 | warning (_("Target-supplied registers are not supported " |
623 | "by the current architecture")); | |
624 | } | |
424163ea DJ |
625 | } |
626 | ||
627 | /* Now that we know this description is usable, record that we | |
628 | fetched it. */ | |
629 | target_desc_fetched = 1; | |
630 | } | |
631 | ||
632 | /* Discard any description fetched from the current target, and switch | |
633 | the current architecture to one with no target description. */ | |
634 | ||
635 | void | |
636 | target_clear_description (void) | |
637 | { | |
638 | struct gdbarch_info info; | |
639 | ||
640 | if (!target_desc_fetched) | |
641 | return; | |
642 | ||
643 | target_desc_fetched = 0; | |
644 | current_target_desc = NULL; | |
645 | ||
646 | gdbarch_info_init (&info); | |
647 | if (!gdbarch_update_p (info)) | |
648 | internal_error (__FILE__, __LINE__, | |
649 | _("Could not remove target-supplied description")); | |
650 | } | |
651 | ||
652 | /* Return the global current target description. This should only be | |
653 | used by gdbarch initialization code; most access should be through | |
654 | an existing gdbarch. */ | |
655 | ||
656 | const struct target_desc * | |
657 | target_current_description (void) | |
658 | { | |
659 | if (target_desc_fetched) | |
660 | return current_target_desc; | |
661 | ||
662 | return NULL; | |
663 | } | |
e35359c5 UW |
664 | |
665 | /* Return non-zero if this target description is compatible | |
666 | with the given BFD architecture. */ | |
667 | ||
668 | int | |
669 | tdesc_compatible_p (const struct target_desc *target_desc, | |
670 | const struct bfd_arch_info *arch) | |
671 | { | |
40e2a983 | 672 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
673 | { |
674 | if (compat == arch | |
675 | || arch->compatible (arch, compat) | |
676 | || compat->compatible (compat, arch)) | |
677 | return 1; | |
678 | } | |
679 | ||
680 | return 0; | |
681 | } | |
23181151 DJ |
682 | \f |
683 | ||
123dc839 | 684 | /* Direct accessors for target descriptions. */ |
424163ea | 685 | |
29709017 DJ |
686 | /* Return the string value of a property named KEY, or NULL if the |
687 | property was not specified. */ | |
688 | ||
689 | const char * | |
690 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
691 | { | |
129c10bc SM |
692 | for (const property &prop : target_desc->properties) |
693 | if (prop.key == key) | |
694 | return prop.value.c_str (); | |
29709017 DJ |
695 | |
696 | return NULL; | |
697 | } | |
698 | ||
23181151 DJ |
699 | /* Return the BFD architecture associated with this target |
700 | description, or NULL if no architecture was specified. */ | |
701 | ||
702 | const struct bfd_arch_info * | |
703 | tdesc_architecture (const struct target_desc *target_desc) | |
704 | { | |
705 | return target_desc->arch; | |
706 | } | |
08d16641 PA |
707 | |
708 | /* Return the OSABI associated with this target description, or | |
709 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
710 | ||
711 | enum gdb_osabi | |
712 | tdesc_osabi (const struct target_desc *target_desc) | |
713 | { | |
714 | return target_desc->osabi; | |
715 | } | |
716 | ||
23181151 DJ |
717 | \f |
718 | ||
123dc839 DJ |
719 | /* Return 1 if this target description includes any registers. */ |
720 | ||
721 | int | |
722 | tdesc_has_registers (const struct target_desc *target_desc) | |
723 | { | |
123dc839 DJ |
724 | if (target_desc == NULL) |
725 | return 0; | |
726 | ||
3eea796c | 727 | for (const tdesc_feature_up &feature : target_desc->features) |
123dc839 DJ |
728 | if (! VEC_empty (tdesc_reg_p, feature->registers)) |
729 | return 1; | |
730 | ||
731 | return 0; | |
732 | } | |
733 | ||
734 | /* Return the feature with the given name, if present, or NULL if | |
735 | the named feature is not found. */ | |
736 | ||
737 | const struct tdesc_feature * | |
738 | tdesc_find_feature (const struct target_desc *target_desc, | |
739 | const char *name) | |
740 | { | |
3eea796c | 741 | for (const tdesc_feature_up &feature : target_desc->features) |
f65ff9f9 | 742 | if (feature->name == name) |
3eea796c | 743 | return feature.get (); |
123dc839 DJ |
744 | |
745 | return NULL; | |
746 | } | |
747 | ||
748 | /* Return the name of FEATURE. */ | |
749 | ||
750 | const char * | |
751 | tdesc_feature_name (const struct tdesc_feature *feature) | |
752 | { | |
f65ff9f9 | 753 | return feature->name.c_str (); |
123dc839 DJ |
754 | } |
755 | ||
ad068eab UW |
756 | /* Predefined types. */ |
757 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 758 | { |
81516450 | 759 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
760 | { "int8", TDESC_TYPE_INT8 }, |
761 | { "int16", TDESC_TYPE_INT16 }, | |
762 | { "int32", TDESC_TYPE_INT32 }, | |
763 | { "int64", TDESC_TYPE_INT64 }, | |
764 | { "int128", TDESC_TYPE_INT128 }, | |
765 | { "uint8", TDESC_TYPE_UINT8 }, | |
766 | { "uint16", TDESC_TYPE_UINT16 }, | |
767 | { "uint32", TDESC_TYPE_UINT32 }, | |
768 | { "uint64", TDESC_TYPE_UINT64 }, | |
769 | { "uint128", TDESC_TYPE_UINT128 }, | |
770 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
771 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
772 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
773 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 774 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 775 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 776 | }; |
81adfced | 777 | |
81516450 DE |
778 | /* Lookup a predefined type. */ |
779 | ||
780 | static struct tdesc_type * | |
781 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
782 | { | |
798a7429 | 783 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
81516450 DE |
784 | if (tdesc_predefined_types[ix].kind == kind) |
785 | return &tdesc_predefined_types[ix]; | |
786 | ||
787 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
788 | } | |
789 | ||
f49ff000 | 790 | /* See arch/tdesc.h. */ |
123dc839 | 791 | |
ad068eab | 792 | struct tdesc_type * |
123dc839 DJ |
793 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
794 | { | |
795 | int ix; | |
ad068eab | 796 | struct tdesc_type *type; |
123dc839 DJ |
797 | |
798 | /* First try target-defined types. */ | |
ad068eab UW |
799 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
800 | if (strcmp (type->name, id) == 0) | |
801 | return type; | |
123dc839 | 802 | |
81adfced DJ |
803 | /* Next try the predefined types. */ |
804 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
805 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 806 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
807 | |
808 | return NULL; | |
809 | } | |
ad068eab | 810 | |
9fd3625f L |
811 | /* Lookup type associated with ID. */ |
812 | ||
813 | struct type * | |
814 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
815 | { | |
816 | struct tdesc_arch_reg *reg; | |
817 | struct tdesc_arch_data *data; | |
818 | int i, num_regs; | |
819 | ||
19ba03f4 | 820 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
9fd3625f L |
821 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); |
822 | for (i = 0; i < num_regs; i++) | |
823 | { | |
824 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); | |
825 | if (reg->reg | |
826 | && reg->reg->tdesc_type | |
827 | && reg->type | |
828 | && strcmp (id, reg->reg->tdesc_type->name) == 0) | |
829 | return reg->type; | |
830 | } | |
831 | ||
832 | return NULL; | |
833 | } | |
834 | ||
ad068eab UW |
835 | /* Construct, if necessary, and return the GDB type implementing target |
836 | type TDESC_TYPE for architecture GDBARCH. */ | |
837 | ||
838 | static struct type * | |
839 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
840 | { | |
9fd3625f L |
841 | struct type *type; |
842 | ||
ad068eab UW |
843 | switch (tdesc_type->kind) |
844 | { | |
845 | /* Predefined types. */ | |
81516450 DE |
846 | case TDESC_TYPE_BOOL: |
847 | return builtin_type (gdbarch)->builtin_bool; | |
848 | ||
ad068eab | 849 | case TDESC_TYPE_INT8: |
df4df182 | 850 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
851 | |
852 | case TDESC_TYPE_INT16: | |
df4df182 | 853 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
854 | |
855 | case TDESC_TYPE_INT32: | |
df4df182 | 856 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
857 | |
858 | case TDESC_TYPE_INT64: | |
df4df182 | 859 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
860 | |
861 | case TDESC_TYPE_INT128: | |
df4df182 | 862 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
863 | |
864 | case TDESC_TYPE_UINT8: | |
df4df182 | 865 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
866 | |
867 | case TDESC_TYPE_UINT16: | |
df4df182 | 868 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
869 | |
870 | case TDESC_TYPE_UINT32: | |
df4df182 | 871 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
872 | |
873 | case TDESC_TYPE_UINT64: | |
df4df182 | 874 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
875 | |
876 | case TDESC_TYPE_UINT128: | |
df4df182 | 877 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
878 | |
879 | case TDESC_TYPE_CODE_PTR: | |
880 | return builtin_type (gdbarch)->builtin_func_ptr; | |
881 | ||
882 | case TDESC_TYPE_DATA_PTR: | |
883 | return builtin_type (gdbarch)->builtin_data_ptr; | |
884 | ||
9fd3625f L |
885 | default: |
886 | break; | |
887 | } | |
888 | ||
889 | type = tdesc_find_type (gdbarch, tdesc_type->name); | |
890 | if (type) | |
891 | return type; | |
892 | ||
893 | switch (tdesc_type->kind) | |
894 | { | |
ad068eab | 895 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 896 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 897 | floatformats_ieee_single); |
ad068eab UW |
898 | |
899 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 900 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 901 | floatformats_ieee_double); |
ad068eab UW |
902 | |
903 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 904 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 905 | floatformats_arm_ext); |
ad068eab | 906 | |
9fd3625f L |
907 | case TDESC_TYPE_I387_EXT: |
908 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
909 | floatformats_i387_ext); | |
910 | ||
ad068eab UW |
911 | /* Types defined by a target feature. */ |
912 | case TDESC_TYPE_VECTOR: | |
913 | { | |
914 | struct type *type, *field_type; | |
915 | ||
916 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
917 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
918 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
919 | ||
920 | return type; | |
921 | } | |
922 | ||
f5dff777 DJ |
923 | case TDESC_TYPE_STRUCT: |
924 | { | |
925 | struct type *type, *field_type; | |
926 | struct tdesc_type_field *f; | |
927 | int ix; | |
928 | ||
929 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); | |
930 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
931 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
932 | ||
933 | for (ix = 0; | |
934 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
935 | ix++) | |
936 | { | |
81516450 | 937 | if (f->start != -1 && f->end != -1) |
f5dff777 DJ |
938 | { |
939 | /* Bitfield. */ | |
940 | struct field *fld; | |
941 | struct type *field_type; | |
942 | int bitsize, total_size; | |
943 | ||
81516450 | 944 | /* This invariant should be preserved while creating types. */ |
f5dff777 | 945 | gdb_assert (tdesc_type->u.u.size != 0); |
81516450 DE |
946 | if (f->type != NULL) |
947 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
948 | else if (tdesc_type->u.u.size > 4) | |
f5dff777 DJ |
949 | field_type = builtin_type (gdbarch)->builtin_uint64; |
950 | else | |
951 | field_type = builtin_type (gdbarch)->builtin_uint32; | |
952 | ||
953 | fld = append_composite_type_field_raw (type, xstrdup (f->name), | |
954 | field_type); | |
955 | ||
956 | /* For little-endian, BITPOS counts from the LSB of | |
957 | the structure and marks the LSB of the field. For | |
958 | big-endian, BITPOS counts from the MSB of the | |
959 | structure and marks the MSB of the field. Either | |
960 | way, it is the number of bits to the "left" of the | |
961 | field. To calculate this in big-endian, we need | |
962 | the total size of the structure. */ | |
963 | bitsize = f->end - f->start + 1; | |
964 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; | |
965 | if (gdbarch_bits_big_endian (gdbarch)) | |
f41f5e61 | 966 | SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize); |
f5dff777 | 967 | else |
f41f5e61 | 968 | SET_FIELD_BITPOS (fld[0], f->start); |
f5dff777 DJ |
969 | FIELD_BITSIZE (fld[0]) = bitsize; |
970 | } | |
971 | else | |
972 | { | |
81516450 | 973 | gdb_assert (f->start == -1 && f->end == -1); |
f5dff777 DJ |
974 | field_type = tdesc_gdb_type (gdbarch, f->type); |
975 | append_composite_type_field (type, xstrdup (f->name), | |
976 | field_type); | |
977 | } | |
978 | } | |
979 | ||
980 | if (tdesc_type->u.u.size != 0) | |
981 | TYPE_LENGTH (type) = tdesc_type->u.u.size; | |
982 | return type; | |
983 | } | |
984 | ||
ad068eab UW |
985 | case TDESC_TYPE_UNION: |
986 | { | |
987 | struct type *type, *field_type; | |
988 | struct tdesc_type_field *f; | |
989 | int ix; | |
990 | ||
e9bb382b | 991 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
ad068eab UW |
992 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
993 | ||
994 | for (ix = 0; | |
995 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
996 | ix++) | |
997 | { | |
998 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
999 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
1000 | ||
f5dff777 | 1001 | /* If any of the children of a union are vectors, flag the |
ad068eab UW |
1002 | union as a vector also. This allows e.g. a union of two |
1003 | vector types to show up automatically in "info vector". */ | |
1004 | if (TYPE_VECTOR (field_type)) | |
1005 | TYPE_VECTOR (type) = 1; | |
1006 | } | |
f5dff777 DJ |
1007 | return type; |
1008 | } | |
1009 | ||
1010 | case TDESC_TYPE_FLAGS: | |
1011 | { | |
81516450 | 1012 | struct tdesc_type_field *f; |
f5dff777 DJ |
1013 | int ix; |
1014 | ||
3494b66d | 1015 | type = arch_flags_type (gdbarch, tdesc_type->name, |
77b7c781 | 1016 | tdesc_type->u.u.size * TARGET_CHAR_BIT); |
81516450 DE |
1017 | for (ix = 0; |
1018 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
1019 | ix++) | |
1020 | { | |
1021 | struct type *field_type; | |
1022 | int bitsize = f->end - f->start + 1; | |
1023 | ||
1024 | gdb_assert (f->type != NULL); | |
1025 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
1026 | append_flags_type_field (type, f->start, bitsize, | |
1027 | field_type, f->name); | |
1028 | } | |
1029 | ||
1030 | return type; | |
1031 | } | |
1032 | ||
1033 | case TDESC_TYPE_ENUM: | |
1034 | { | |
1035 | struct tdesc_type_field *f; | |
1036 | int ix; | |
1037 | ||
1038 | type = arch_type (gdbarch, TYPE_CODE_ENUM, | |
77b7c781 UW |
1039 | tdesc_type->u.u.size * TARGET_CHAR_BIT, |
1040 | tdesc_type->name); | |
81516450 | 1041 | TYPE_UNSIGNED (type) = 1; |
f5dff777 | 1042 | for (ix = 0; |
81516450 | 1043 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
f5dff777 | 1044 | ix++) |
81516450 DE |
1045 | { |
1046 | struct field *fld | |
1047 | = append_composite_type_field_raw (type, xstrdup (f->name), | |
1048 | NULL); | |
1049 | ||
1050 | SET_FIELD_BITPOS (fld[0], f->start); | |
1051 | } | |
ad068eab UW |
1052 | |
1053 | return type; | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | internal_error (__FILE__, __LINE__, | |
1058 | "Type \"%s\" has an unknown kind %d", | |
1059 | tdesc_type->name, tdesc_type->kind); | |
1060 | } | |
123dc839 DJ |
1061 | \f |
1062 | ||
1063 | /* Support for registers from target descriptions. */ | |
1064 | ||
1065 | /* Construct the per-gdbarch data. */ | |
1066 | ||
1067 | static void * | |
1068 | tdesc_data_init (struct obstack *obstack) | |
1069 | { | |
1070 | struct tdesc_arch_data *data; | |
1071 | ||
1072 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
1073 | return data; | |
1074 | } | |
1075 | ||
1076 | /* Similar, but for the temporary copy used during architecture | |
1077 | initialization. */ | |
1078 | ||
1079 | struct tdesc_arch_data * | |
1080 | tdesc_data_alloc (void) | |
1081 | { | |
41bf6aca | 1082 | return XCNEW (struct tdesc_arch_data); |
123dc839 DJ |
1083 | } |
1084 | ||
1085 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
1086 | to be used (for instance if it was unsuitable for the | |
1087 | architecture). */ | |
1088 | ||
1089 | void | |
1090 | tdesc_data_cleanup (void *data_untyped) | |
1091 | { | |
19ba03f4 | 1092 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 1093 | |
ad068eab | 1094 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
1095 | xfree (data); |
1096 | } | |
1097 | ||
1098 | /* Search FEATURE for a register named NAME. */ | |
1099 | ||
7cc46491 DJ |
1100 | static struct tdesc_reg * |
1101 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
1102 | const char *name) | |
123dc839 DJ |
1103 | { |
1104 | int ixr; | |
1105 | struct tdesc_reg *reg; | |
1106 | ||
1107 | for (ixr = 0; | |
1108 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1109 | ixr++) | |
1110 | if (strcasecmp (reg->name, name) == 0) | |
7cc46491 | 1111 | return reg; |
123dc839 | 1112 | |
7cc46491 DJ |
1113 | return NULL; |
1114 | } | |
1115 | ||
1116 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
1117 | ||
1118 | int | |
1119 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
1120 | struct tdesc_arch_data *data, | |
1121 | int regno, const char *name) | |
1122 | { | |
ad068eab | 1123 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
1124 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
1125 | ||
1126 | if (reg == NULL) | |
1127 | return 0; | |
1128 | ||
1129 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
1130 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
1131 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
1132 | ||
1133 | arch_reg.reg = reg; | |
1134 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 1135 | return 1; |
123dc839 DJ |
1136 | } |
1137 | ||
58d6951d DJ |
1138 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
1139 | register number to it. */ | |
1140 | ||
1141 | int | |
1142 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
1143 | const char *name) | |
1144 | { | |
1145 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1146 | ||
1147 | if (reg == NULL) | |
1148 | return 0; | |
1149 | ||
1150 | return 1; | |
1151 | } | |
1152 | ||
7cc46491 DJ |
1153 | /* Search FEATURE for a register whose name is in NAMES and assign |
1154 | REGNO to it. */ | |
123dc839 DJ |
1155 | |
1156 | int | |
1157 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
1158 | struct tdesc_arch_data *data, | |
1159 | int regno, const char *const names[]) | |
1160 | { | |
1161 | int i; | |
1162 | ||
1163 | for (i = 0; names[i] != NULL; i++) | |
1164 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
1165 | return 1; | |
1166 | ||
1167 | return 0; | |
1168 | } | |
1169 | ||
7cc46491 DJ |
1170 | /* Search FEATURE for a register named NAME, and return its size in |
1171 | bits. The register must exist. */ | |
1172 | ||
1173 | int | |
1174 | tdesc_register_size (const struct tdesc_feature *feature, | |
1175 | const char *name) | |
1176 | { | |
1177 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1178 | ||
1179 | gdb_assert (reg != NULL); | |
1180 | return reg->bitsize; | |
1181 | } | |
1182 | ||
123dc839 DJ |
1183 | /* Look up a register by its GDB internal register number. */ |
1184 | ||
ad068eab UW |
1185 | static struct tdesc_arch_reg * |
1186 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 1187 | { |
123dc839 DJ |
1188 | struct tdesc_arch_data *data; |
1189 | ||
19ba03f4 | 1190 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab UW |
1191 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
1192 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
1193 | else |
1194 | return NULL; | |
1195 | } | |
1196 | ||
ad068eab UW |
1197 | static struct tdesc_reg * |
1198 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
1199 | { | |
1200 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 1201 | |
ad068eab UW |
1202 | return reg? reg->reg : NULL; |
1203 | } | |
1204 | ||
f8b73d13 DJ |
1205 | /* Return the name of register REGNO, from the target description or |
1206 | from an architecture-provided pseudo_register_name method. */ | |
1207 | ||
1208 | const char * | |
d93859e2 | 1209 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 1210 | { |
d93859e2 UW |
1211 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1212 | int num_regs = gdbarch_num_regs (gdbarch); | |
1213 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
1214 | |
1215 | if (reg != NULL) | |
1216 | return reg->name; | |
1217 | ||
1218 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1219 | { | |
19ba03f4 SM |
1220 | struct tdesc_arch_data *data |
1221 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1222 | |
123dc839 | 1223 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 1224 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
1225 | } |
1226 | ||
1227 | return ""; | |
1228 | } | |
1229 | ||
58d6951d | 1230 | struct type * |
123dc839 DJ |
1231 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
1232 | { | |
ad068eab UW |
1233 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
1234 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1235 | int num_regs = gdbarch_num_regs (gdbarch); |
1236 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1237 | ||
1238 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1239 | { | |
19ba03f4 SM |
1240 | struct tdesc_arch_data *data |
1241 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1242 | |
123dc839 DJ |
1243 | gdb_assert (data->pseudo_register_type != NULL); |
1244 | return data->pseudo_register_type (gdbarch, regno); | |
1245 | } | |
1246 | ||
1247 | if (reg == NULL) | |
1248 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1249 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1250 | |
ad068eab | 1251 | if (arch_reg->type == NULL) |
123dc839 | 1252 | { |
ad068eab UW |
1253 | /* First check for a predefined or target defined type. */ |
1254 | if (reg->tdesc_type) | |
1255 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
1256 | ||
1257 | /* Next try size-sensitive type shortcuts. */ | |
1258 | else if (strcmp (reg->type, "float") == 0) | |
1259 | { | |
1260 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1261 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1262 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1263 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1264 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1265 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1266 | else | |
1267 | { | |
1268 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1269 | reg->name, reg->bitsize); | |
1270 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1271 | } | |
1272 | } | |
1273 | else if (strcmp (reg->type, "int") == 0) | |
1274 | { | |
1275 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1276 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1277 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1278 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1279 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1280 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1281 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1282 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1283 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1284 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1285 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1286 | /* A bit desperate by this point... */ |
ad068eab UW |
1287 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1288 | else | |
1289 | { | |
1290 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1291 | reg->name, reg->bitsize); | |
1292 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | if (arch_reg->type == NULL) | |
1297 | internal_error (__FILE__, __LINE__, | |
1298 | "Register \"%s\" has an unknown type \"%s\"", | |
1299 | reg->name, reg->type); | |
123dc839 | 1300 | } |
123dc839 | 1301 | |
ad068eab | 1302 | return arch_reg->type; |
123dc839 DJ |
1303 | } |
1304 | ||
1305 | static int | |
1306 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1307 | { | |
1308 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1309 | ||
1310 | if (reg != NULL) | |
1311 | return reg->target_regnum; | |
1312 | else | |
1313 | return -1; | |
1314 | } | |
1315 | ||
1316 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
1317 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
1318 | Unlike a gdbarch register_reggroup_p method, this function will |
1319 | return -1 if it does not know; the caller should handle registers | |
1320 | with no specified group. | |
123dc839 DJ |
1321 | |
1322 | Arbitrary strings (other than "general", "float", and "vector") | |
1323 | from the description are not used; they cause the register to be | |
1324 | displayed in "info all-registers" but excluded from "info | |
1325 | registers" et al. The names of containing features are also not | |
1326 | used. This might be extended to display registers in some more | |
1327 | useful groupings. | |
1328 | ||
1329 | The save-restore flag is also implemented here. */ | |
1330 | ||
f8b73d13 DJ |
1331 | int |
1332 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1333 | struct reggroup *reggroup) | |
123dc839 | 1334 | { |
123dc839 DJ |
1335 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1336 | ||
123dc839 DJ |
1337 | if (reg != NULL && reg->group != NULL) |
1338 | { | |
1339 | int general_p = 0, float_p = 0, vector_p = 0; | |
1340 | ||
1341 | if (strcmp (reg->group, "general") == 0) | |
1342 | general_p = 1; | |
1343 | else if (strcmp (reg->group, "float") == 0) | |
1344 | float_p = 1; | |
1345 | else if (strcmp (reg->group, "vector") == 0) | |
1346 | vector_p = 1; | |
1347 | ||
1348 | if (reggroup == float_reggroup) | |
1349 | return float_p; | |
1350 | ||
1351 | if (reggroup == vector_reggroup) | |
1352 | return vector_p; | |
1353 | ||
1354 | if (reggroup == general_reggroup) | |
1355 | return general_p; | |
1356 | } | |
1357 | ||
1358 | if (reg != NULL | |
1359 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1360 | return reg->save_restore; | |
1361 | ||
f8b73d13 DJ |
1362 | return -1; |
1363 | } | |
1364 | ||
1365 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1366 | group specified go to the default reggroup function and are handled | |
1367 | by type. */ | |
1368 | ||
1369 | static int | |
1370 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1371 | struct reggroup *reggroup) | |
1372 | { | |
1373 | int num_regs = gdbarch_num_regs (gdbarch); | |
1374 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1375 | int ret; | |
1376 | ||
1377 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1378 | { | |
19ba03f4 SM |
1379 | struct tdesc_arch_data *data |
1380 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1381 | |
58d6951d DJ |
1382 | if (data->pseudo_register_reggroup_p != NULL) |
1383 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1384 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1385 | } |
1386 | ||
1387 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1388 | if (ret != -1) | |
1389 | return ret; | |
1390 | ||
123dc839 DJ |
1391 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1392 | } | |
1393 | ||
1394 | /* Record architecture-specific functions to call for pseudo-register | |
1395 | support. */ | |
1396 | ||
1397 | void | |
1398 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1399 | gdbarch_register_name_ftype *pseudo_name) | |
1400 | { | |
19ba03f4 SM |
1401 | struct tdesc_arch_data *data |
1402 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1403 | |
1404 | data->pseudo_register_name = pseudo_name; | |
1405 | } | |
1406 | ||
1407 | void | |
1408 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1409 | gdbarch_register_type_ftype *pseudo_type) | |
1410 | { | |
19ba03f4 SM |
1411 | struct tdesc_arch_data *data |
1412 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1413 | |
1414 | data->pseudo_register_type = pseudo_type; | |
1415 | } | |
1416 | ||
1417 | void | |
1418 | set_tdesc_pseudo_register_reggroup_p | |
1419 | (struct gdbarch *gdbarch, | |
1420 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1421 | { | |
19ba03f4 SM |
1422 | struct tdesc_arch_data *data |
1423 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1424 | |
1425 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1426 | } | |
1427 | ||
1428 | /* Update GDBARCH to use the target description for registers. */ | |
1429 | ||
1430 | void | |
1431 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1432 | const struct target_desc *target_desc, |
123dc839 DJ |
1433 | struct tdesc_arch_data *early_data) |
1434 | { | |
1435 | int num_regs = gdbarch_num_regs (gdbarch); | |
3eea796c | 1436 | int ixr; |
123dc839 DJ |
1437 | struct tdesc_reg *reg; |
1438 | struct tdesc_arch_data *data; | |
ad068eab | 1439 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
1440 | htab_t reg_hash; |
1441 | ||
123dc839 DJ |
1442 | /* We can't use the description for registers if it doesn't describe |
1443 | any. This function should only be called after validating | |
1444 | registers, so the caller should know that registers are | |
1445 | included. */ | |
1446 | gdb_assert (tdesc_has_registers (target_desc)); | |
1447 | ||
19ba03f4 | 1448 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1449 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
1450 | xfree (early_data); |
1451 | ||
1452 | /* Build up a set of all registers, so that we can assign register | |
1453 | numbers where needed. The hash table expands as necessary, so | |
1454 | the initial size is arbitrary. */ | |
1455 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
3eea796c | 1456 | for (const tdesc_feature_up &feature : target_desc->features) |
123dc839 DJ |
1457 | for (ixr = 0; |
1458 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1459 | ixr++) | |
1460 | { | |
1461 | void **slot = htab_find_slot (reg_hash, reg, INSERT); | |
1462 | ||
1463 | *slot = reg; | |
1464 | } | |
1465 | ||
1466 | /* Remove any registers which were assigned numbers by the | |
1467 | architecture. */ | |
ad068eab UW |
1468 | for (ixr = 0; |
1469 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); | |
1470 | ixr++) | |
1471 | if (arch_reg->reg) | |
1472 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
1473 | |
1474 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1475 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1476 | Iterate over the features, not the hash table, so that the order |
1477 | matches that in the target description. */ | |
1478 | ||
ad068eab UW |
1479 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1480 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1481 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
3eea796c | 1482 | for (const tdesc_feature_up &feature : target_desc->features) |
123dc839 DJ |
1483 | for (ixr = 0; |
1484 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1485 | ixr++) | |
1486 | if (htab_find (reg_hash, reg) != NULL) | |
1487 | { | |
ad068eab UW |
1488 | new_arch_reg.reg = reg; |
1489 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1490 | num_regs++; |
1491 | } | |
1492 | ||
1493 | htab_delete (reg_hash); | |
1494 | ||
1495 | /* Update the architecture. */ | |
1496 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1497 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1498 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1499 | set_gdbarch_remote_register_number (gdbarch, | |
1500 | tdesc_remote_register_number); | |
1501 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1502 | } | |
1503 | \f | |
1504 | ||
f49ff000 YQ |
1505 | /* See arch/tdesc.h. */ |
1506 | ||
123dc839 DJ |
1507 | void |
1508 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1509 | int regnum, int save_restore, const char *group, | |
1510 | int bitsize, const char *type) | |
1511 | { | |
72ddacb7 YQ |
1512 | tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, |
1513 | group, bitsize, type); | |
123dc839 DJ |
1514 | |
1515 | VEC_safe_push (tdesc_reg_p, feature->registers, reg); | |
1516 | } | |
1517 | ||
f49ff000 YQ |
1518 | /* See arch/tdesc.h. */ |
1519 | ||
ad068eab UW |
1520 | struct tdesc_type * |
1521 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1522 | struct tdesc_type *field_type, int count) | |
1523 | { | |
72ddacb7 | 1524 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_VECTOR); |
ad068eab | 1525 | |
ad068eab UW |
1526 | type->u.v.type = field_type; |
1527 | type->u.v.count = count; | |
1528 | ||
1529 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1530 | return type; | |
1531 | } | |
1532 | ||
f49ff000 YQ |
1533 | /* See arch/tdesc.h. */ |
1534 | ||
f5dff777 DJ |
1535 | struct tdesc_type * |
1536 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
1537 | { | |
72ddacb7 | 1538 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_STRUCT); |
f5dff777 DJ |
1539 | |
1540 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1541 | return type; | |
1542 | } | |
1543 | ||
f49ff000 | 1544 | /* See arch/tdesc.h. */ |
f5dff777 DJ |
1545 | |
1546 | void | |
54157a25 | 1547 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
f5dff777 DJ |
1548 | { |
1549 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1550 | gdb_assert (size > 0); |
f5dff777 DJ |
1551 | type->u.u.size = size; |
1552 | } | |
1553 | ||
f49ff000 YQ |
1554 | /* See arch/tdesc.h. */ |
1555 | ||
ad068eab UW |
1556 | struct tdesc_type * |
1557 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1558 | { | |
72ddacb7 | 1559 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_UNION); |
ad068eab UW |
1560 | |
1561 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1562 | return type; | |
1563 | } | |
1564 | ||
f49ff000 YQ |
1565 | /* See arch/tdesc.h. */ |
1566 | ||
f5dff777 DJ |
1567 | struct tdesc_type * |
1568 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
54157a25 | 1569 | int size) |
f5dff777 | 1570 | { |
72ddacb7 | 1571 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_FLAGS); |
f5dff777 | 1572 | |
54157a25 DE |
1573 | gdb_assert (size > 0); |
1574 | ||
81516450 | 1575 | type->u.u.size = size; |
f5dff777 DJ |
1576 | |
1577 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1578 | return type; | |
1579 | } | |
1580 | ||
81516450 DE |
1581 | struct tdesc_type * |
1582 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
1583 | int size) | |
1584 | { | |
72ddacb7 | 1585 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_ENUM); |
81516450 DE |
1586 | |
1587 | gdb_assert (size > 0); | |
1588 | ||
81516450 DE |
1589 | type->u.u.size = size; |
1590 | ||
1591 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1592 | return type; | |
1593 | } | |
1594 | ||
f49ff000 | 1595 | /* See arch/tdesc.h. */ |
f5dff777 | 1596 | |
ad068eab UW |
1597 | void |
1598 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1599 | struct tdesc_type *field_type) | |
1600 | { | |
1601 | struct tdesc_type_field f = { 0 }; | |
1602 | ||
f5dff777 DJ |
1603 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1604 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab UW |
1605 | |
1606 | f.name = xstrdup (field_name); | |
1607 | f.type = field_type; | |
81516450 DE |
1608 | /* Initialize these values so we know this is not a bit-field |
1609 | when we print-c-tdesc. */ | |
1610 | f.start = -1; | |
1611 | f.end = -1; | |
ad068eab UW |
1612 | |
1613 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1614 | } | |
1615 | ||
f5dff777 | 1616 | void |
81516450 DE |
1617 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
1618 | int start, int end, struct tdesc_type *field_type) | |
f5dff777 DJ |
1619 | { |
1620 | struct tdesc_type_field f = { 0 }; | |
1621 | ||
81516450 DE |
1622 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1623 | || type->kind == TDESC_TYPE_FLAGS); | |
1624 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 DJ |
1625 | |
1626 | f.name = xstrdup (field_name); | |
1627 | f.start = start; | |
1628 | f.end = end; | |
81516450 | 1629 | f.type = field_type; |
f5dff777 DJ |
1630 | |
1631 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1632 | } | |
1633 | ||
f49ff000 | 1634 | /* See arch/tdesc.h. */ |
81516450 DE |
1635 | |
1636 | void | |
1637 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, | |
1638 | int start, int end) | |
1639 | { | |
1640 | struct tdesc_type *field_type; | |
1641 | ||
1642 | gdb_assert (start >= 0 && end >= start); | |
1643 | ||
1644 | if (type->u.u.size > 4) | |
1645 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
1646 | else | |
1647 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1648 | ||
1649 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1650 | } | |
1651 | ||
f49ff000 | 1652 | /* See arch/tdesc.h. */ |
81516450 | 1653 | |
f5dff777 DJ |
1654 | void |
1655 | tdesc_add_flag (struct tdesc_type *type, int start, | |
1656 | const char *flag_name) | |
1657 | { | |
81516450 | 1658 | struct tdesc_type_field f = { 0 }; |
f5dff777 | 1659 | |
81516450 DE |
1660 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1661 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 DJ |
1662 | |
1663 | f.name = xstrdup (flag_name); | |
1664 | f.start = start; | |
81516450 DE |
1665 | f.end = start; |
1666 | f.type = tdesc_predefined_type (TDESC_TYPE_BOOL); | |
f5dff777 | 1667 | |
81516450 DE |
1668 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
1669 | } | |
1670 | ||
1671 | void | |
1672 | tdesc_add_enum_value (struct tdesc_type *type, int value, | |
1673 | const char *name) | |
1674 | { | |
1675 | struct tdesc_type_field f = { 0 }; | |
1676 | ||
1677 | gdb_assert (type->kind == TDESC_TYPE_ENUM); | |
1678 | ||
1679 | f.name = xstrdup (name); | |
1680 | f.start = value; | |
1681 | f.end = -1; | |
1682 | f.type = tdesc_predefined_type (TDESC_TYPE_INT32); | |
1683 | ||
1684 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
f5dff777 DJ |
1685 | } |
1686 | ||
f49ff000 YQ |
1687 | /* See arch/tdesc.h. */ |
1688 | ||
123dc839 | 1689 | struct tdesc_feature * |
0abe8a89 YQ |
1690 | tdesc_create_feature (struct target_desc *tdesc, const char *name, |
1691 | const char *xml) | |
123dc839 | 1692 | { |
72ddacb7 | 1693 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 | 1694 | |
3eea796c SM |
1695 | tdesc->features.emplace_back (new_feature); |
1696 | ||
123dc839 DJ |
1697 | return new_feature; |
1698 | } | |
1699 | ||
424163ea DJ |
1700 | struct target_desc * |
1701 | allocate_target_description (void) | |
1702 | { | |
b468ff4c | 1703 | return new target_desc (); |
424163ea | 1704 | } |
29709017 | 1705 | |
23181151 DJ |
1706 | static void |
1707 | free_target_description (void *arg) | |
1708 | { | |
19ba03f4 | 1709 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1710 | |
b468ff4c | 1711 | delete target_desc; |
23181151 DJ |
1712 | } |
1713 | ||
1714 | struct cleanup * | |
1715 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1716 | { | |
1717 | return make_cleanup (free_target_description, target_desc); | |
1718 | } | |
1719 | ||
e35359c5 UW |
1720 | void |
1721 | tdesc_add_compatible (struct target_desc *target_desc, | |
1722 | const struct bfd_arch_info *compatible) | |
1723 | { | |
e35359c5 UW |
1724 | /* If this instance of GDB is compiled without BFD support for the |
1725 | compatible architecture, simply ignore it -- we would not be able | |
1726 | to handle it anyway. */ | |
1727 | if (compatible == NULL) | |
1728 | return; | |
1729 | ||
40e2a983 | 1730 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
1731 | if (compat == compatible) |
1732 | internal_error (__FILE__, __LINE__, | |
1733 | _("Attempted to add duplicate " | |
1734 | "compatible architecture \"%s\""), | |
1735 | compatible->printable_name); | |
1736 | ||
40e2a983 | 1737 | target_desc->compatible.push_back (compatible); |
e35359c5 UW |
1738 | } |
1739 | ||
29709017 DJ |
1740 | void |
1741 | set_tdesc_property (struct target_desc *target_desc, | |
1742 | const char *key, const char *value) | |
1743 | { | |
29709017 DJ |
1744 | gdb_assert (key != NULL && value != NULL); |
1745 | ||
129c10bc SM |
1746 | if (tdesc_property (target_desc, key) != NULL) |
1747 | internal_error (__FILE__, __LINE__, | |
1748 | _("Attempted to add duplicate property \"%s\""), key); | |
29709017 | 1749 | |
129c10bc | 1750 | target_desc->properties.emplace_back (key, value); |
29709017 | 1751 | } |
23181151 | 1752 | |
5f035c07 YQ |
1753 | /* See arch/tdesc.h. */ |
1754 | ||
1755 | void | |
1756 | set_tdesc_architecture (struct target_desc *target_desc, | |
1757 | const char *name) | |
1758 | { | |
1759 | set_tdesc_architecture (target_desc, bfd_scan_arch (name)); | |
1760 | } | |
1761 | ||
23181151 DJ |
1762 | void |
1763 | set_tdesc_architecture (struct target_desc *target_desc, | |
1764 | const struct bfd_arch_info *arch) | |
1765 | { | |
1766 | target_desc->arch = arch; | |
1767 | } | |
08d16641 | 1768 | |
5f035c07 YQ |
1769 | /* See arch/tdesc.h. */ |
1770 | ||
1771 | void | |
1772 | set_tdesc_osabi (struct target_desc *target_desc, const char *name) | |
1773 | { | |
1774 | set_tdesc_osabi (target_desc, osabi_from_tdesc_string (name)); | |
1775 | } | |
1776 | ||
08d16641 PA |
1777 | void |
1778 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1779 | { | |
1780 | target_desc->osabi = osabi; | |
1781 | } | |
23181151 DJ |
1782 | \f |
1783 | ||
1784 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1785 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1786 | ||
1787 | /* Helper functions for the CLI commands. */ | |
1788 | ||
1789 | static void | |
981a3fb3 | 1790 | set_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1791 | { |
635c7e8a | 1792 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1793 | } |
1794 | ||
1795 | static void | |
981a3fb3 | 1796 | show_tdesc_cmd (const char *args, int from_tty) |
23181151 DJ |
1797 | { |
1798 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1799 | } | |
1800 | ||
1801 | static void | |
981a3fb3 | 1802 | unset_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1803 | { |
635c7e8a | 1804 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1805 | } |
1806 | ||
1807 | static void | |
eb4c3f4a | 1808 | set_tdesc_filename_cmd (const char *args, int from_tty, |
23181151 DJ |
1809 | struct cmd_list_element *c) |
1810 | { | |
6ecd4729 PA |
1811 | xfree (target_description_filename); |
1812 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1813 | ||
23181151 DJ |
1814 | target_clear_description (); |
1815 | target_find_description (); | |
1816 | } | |
1817 | ||
1818 | static void | |
1819 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1820 | struct cmd_list_element *c, | |
1821 | const char *value) | |
1822 | { | |
6ecd4729 PA |
1823 | value = target_description_filename; |
1824 | ||
23181151 | 1825 | if (value != NULL && *value != '\0') |
3e43a32a | 1826 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1827 | value); |
1828 | else | |
3e43a32a MS |
1829 | printf_filtered (_("The target description will be " |
1830 | "read from the target.\n")); | |
23181151 DJ |
1831 | } |
1832 | ||
1833 | static void | |
e100df1a | 1834 | unset_tdesc_filename_cmd (const char *args, int from_tty) |
23181151 DJ |
1835 | { |
1836 | xfree (target_description_filename); | |
1837 | target_description_filename = NULL; | |
1838 | target_clear_description (); | |
1839 | target_find_description (); | |
1840 | } | |
1841 | ||
6eb1e6a8 YQ |
1842 | /* Print target description in C. */ |
1843 | ||
1844 | class print_c_tdesc : public tdesc_element_visitor | |
1845 | { | |
1846 | public: | |
1847 | print_c_tdesc (std::string &filename_after_features) | |
1848 | : m_filename_after_features (filename_after_features) | |
1849 | { | |
1850 | const char *inp; | |
1851 | char *outp; | |
1852 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1853 | ||
1854 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1855 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1856 | if (*inp == '.') | |
1857 | break; | |
1858 | else if (*inp == '-') | |
1859 | *outp++ = '_'; | |
1860 | else | |
1861 | *outp++ = *inp; | |
1862 | *outp = '\0'; | |
1863 | ||
1864 | /* Standard boilerplate. */ | |
1865 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1866 | "-*- buffer-read-only: t -*- vi" | |
1867 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1868 | } |
1869 | ||
1870 | ~print_c_tdesc () | |
1871 | { | |
1872 | xfree (m_function); | |
1873 | } | |
1874 | ||
1875 | void visit_pre (const target_desc *e) override | |
1876 | { | |
25aa13e5 YQ |
1877 | printf_unfiltered (" Original: %s */\n\n", |
1878 | lbasename (m_filename_after_features.c_str ())); | |
1879 | ||
6eb1e6a8 YQ |
1880 | printf_unfiltered ("#include \"defs.h\"\n"); |
1881 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1882 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1883 | printf_unfiltered ("\n"); | |
1884 | ||
1885 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1886 | printf_unfiltered ("static void\n"); | |
1887 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1888 | printf_unfiltered ("{\n"); | |
1889 | printf_unfiltered | |
1890 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1891 | ||
1892 | if (tdesc_architecture (e) != NULL) | |
1893 | { | |
1894 | printf_unfiltered | |
1895 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1896 | tdesc_architecture (e)->printable_name); | |
1897 | printf_unfiltered ("\n"); | |
1898 | } | |
1899 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1900 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1901 | { | |
1902 | printf_unfiltered | |
1903 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1904 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1905 | printf_unfiltered ("\n"); | |
1906 | } | |
1907 | ||
40e2a983 SM |
1908 | for (const struct bfd_arch_info *compatible : e->compatible) |
1909 | printf_unfiltered | |
1910 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1911 | compatible->printable_name); | |
6eb1e6a8 | 1912 | |
40e2a983 | 1913 | if (!e->compatible.empty ()) |
6eb1e6a8 YQ |
1914 | printf_unfiltered ("\n"); |
1915 | ||
129c10bc SM |
1916 | for (const property &prop : e->properties) |
1917 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1918 | prop.key.c_str (), prop.value.c_str ()); | |
1919 | ||
6eb1e6a8 YQ |
1920 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
1921 | } | |
1922 | ||
25aa13e5 | 1923 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1924 | { |
1925 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
f65ff9f9 | 1926 | e->name.c_str ()); |
6eb1e6a8 YQ |
1927 | } |
1928 | ||
25aa13e5 YQ |
1929 | void visit_post (const tdesc_feature *e) override |
1930 | {} | |
1931 | ||
6eb1e6a8 YQ |
1932 | void visit_post (const target_desc *e) override |
1933 | { | |
1934 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1935 | printf_unfiltered ("}\n"); | |
1936 | } | |
1937 | ||
1938 | void visit (const tdesc_type *type) override | |
1939 | { | |
1940 | struct tdesc_type_field *f; | |
1941 | ||
1942 | /* Now we do some "filtering" in order to know which variables to | |
1943 | declare. This is needed because otherwise we would declare unused | |
1944 | variables `field_type' and `type'. */ | |
1945 | if (!m_printed_field_type) | |
1946 | { | |
1947 | printf_unfiltered (" struct tdesc_type *field_type;\n"); | |
1948 | m_printed_field_type = true; | |
1949 | } | |
1950 | ||
1951 | if ((type->kind == TDESC_TYPE_UNION | |
1952 | || type->kind == TDESC_TYPE_STRUCT | |
1953 | || type->kind == TDESC_TYPE_FLAGS | |
1954 | || type->kind == TDESC_TYPE_ENUM) | |
1955 | && VEC_length (tdesc_type_field, type->u.u.fields) > 0 | |
1956 | && !m_printed_type) | |
1957 | { | |
1958 | printf_unfiltered (" struct tdesc_type *type;\n"); | |
1959 | m_printed_type = true; | |
1960 | } | |
1961 | ||
1962 | switch (type->kind) | |
1963 | { | |
1964 | case TDESC_TYPE_VECTOR: | |
1965 | printf_unfiltered | |
1966 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
1967 | type->u.v.type->name); | |
1968 | printf_unfiltered | |
1969 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", | |
1970 | type->name, type->u.v.count); | |
1971 | break; | |
1972 | case TDESC_TYPE_STRUCT: | |
1973 | case TDESC_TYPE_FLAGS: | |
1974 | if (type->kind == TDESC_TYPE_STRUCT) | |
1975 | { | |
1976 | printf_unfiltered | |
1977 | (" type = tdesc_create_struct (feature, \"%s\");\n", | |
1978 | type->name); | |
1979 | if (type->u.u.size != 0) | |
1980 | printf_unfiltered | |
1981 | (" tdesc_set_struct_size (type, %d);\n", | |
1982 | type->u.u.size); | |
1983 | } | |
1984 | else | |
1985 | { | |
1986 | printf_unfiltered | |
1987 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", | |
1988 | type->name, type->u.u.size); | |
1989 | } | |
1990 | for (int ix3 = 0; | |
1991 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1992 | ix3++) | |
1993 | { | |
1994 | const char *type_name; | |
1995 | ||
1996 | gdb_assert (f->type != NULL); | |
1997 | type_name = f->type->name; | |
1998 | ||
1999 | /* To minimize changes to generated files, don't emit type | |
2000 | info for fields that have defaulted types. */ | |
2001 | if (f->start != -1) | |
2002 | { | |
2003 | gdb_assert (f->end != -1); | |
2004 | if (f->type->kind == TDESC_TYPE_BOOL) | |
2005 | { | |
2006 | gdb_assert (f->start == f->end); | |
2007 | printf_unfiltered | |
2008 | (" tdesc_add_flag (type, %d, \"%s\");\n", | |
2009 | f->start, f->name); | |
2010 | } | |
2011 | else if ((type->u.u.size == 4 | |
2012 | && f->type->kind == TDESC_TYPE_UINT32) | |
2013 | || (type->u.u.size == 8 | |
2014 | && f->type->kind == TDESC_TYPE_UINT64)) | |
2015 | { | |
2016 | printf_unfiltered | |
2017 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", | |
2018 | f->name, f->start, f->end); | |
2019 | } | |
2020 | else | |
2021 | { | |
2022 | printf_unfiltered | |
2023 | (" field_type = tdesc_named_type (feature," | |
2024 | " \"%s\");\n", | |
2025 | type_name); | |
2026 | printf_unfiltered | |
2027 | (" tdesc_add_typed_bitfield (type, \"%s\"," | |
2028 | " %d, %d, field_type);\n", | |
2029 | f->name, f->start, f->end); | |
2030 | } | |
2031 | } | |
2032 | else /* Not a bitfield. */ | |
2033 | { | |
2034 | gdb_assert (f->end == -1); | |
2035 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
2036 | printf_unfiltered | |
2037 | (" field_type = tdesc_named_type (feature," | |
2038 | " \"%s\");\n", | |
2039 | type_name); | |
2040 | printf_unfiltered | |
2041 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2042 | f->name); | |
2043 | } | |
2044 | } | |
2045 | break; | |
2046 | case TDESC_TYPE_UNION: | |
2047 | printf_unfiltered | |
2048 | (" type = tdesc_create_union (feature, \"%s\");\n", | |
2049 | type->name); | |
2050 | for (int ix3 = 0; | |
2051 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2052 | ix3++) | |
2053 | { | |
2054 | printf_unfiltered | |
2055 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
2056 | f->type->name); | |
2057 | printf_unfiltered | |
2058 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2059 | f->name); | |
2060 | } | |
2061 | break; | |
2062 | case TDESC_TYPE_ENUM: | |
2063 | printf_unfiltered | |
2064 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", | |
2065 | type->name, type->u.u.size); | |
2066 | for (int ix3 = 0; | |
2067 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2068 | ix3++) | |
2069 | printf_unfiltered | |
2070 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", | |
2071 | f->start, f->name); | |
2072 | break; | |
2073 | default: | |
2074 | error (_("C output is not supported type \"%s\"."), type->name); | |
2075 | } | |
2076 | printf_unfiltered ("\n"); | |
2077 | } | |
2078 | ||
2079 | void visit (const tdesc_reg *reg) override | |
2080 | { | |
2081 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
2082 | reg->name, reg->target_regnum, reg->save_restore); | |
2083 | if (reg->group) | |
2084 | printf_unfiltered ("\"%s\", ", reg->group); | |
2085 | else | |
2086 | printf_unfiltered ("NULL, "); | |
2087 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
2088 | } | |
2089 | ||
25aa13e5 YQ |
2090 | protected: |
2091 | std::string m_filename_after_features; | |
2092 | ||
6eb1e6a8 YQ |
2093 | private: |
2094 | char *m_function; | |
6eb1e6a8 YQ |
2095 | bool m_printed_field_type = false; |
2096 | bool m_printed_type = false; | |
2097 | }; | |
2098 | ||
25aa13e5 YQ |
2099 | /* Print target description feature in C. */ |
2100 | ||
2101 | class print_c_feature : public print_c_tdesc | |
2102 | { | |
2103 | public: | |
2104 | print_c_feature (std::string &file) | |
2105 | : print_c_tdesc (file) | |
2106 | { | |
2107 | /* Trim ".tmp". */ | |
2108 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
2109 | ||
2110 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
2111 | } | |
2112 | ||
2113 | void visit_pre (const target_desc *e) override | |
2114 | { | |
2115 | printf_unfiltered (" Original: %s */\n\n", | |
2116 | lbasename (m_filename_after_features.c_str ())); | |
2117 | ||
f49ff000 | 2118 | printf_unfiltered ("#include \"arch/tdesc.h\"\n"); |
25aa13e5 YQ |
2119 | printf_unfiltered ("\n"); |
2120 | } | |
2121 | ||
2122 | void visit_post (const target_desc *e) override | |
2123 | {} | |
2124 | ||
2125 | void visit_pre (const tdesc_feature *e) override | |
2126 | { | |
2127 | std::string name (m_filename_after_features); | |
2128 | ||
2129 | auto pos = name.find_first_of ('.'); | |
2130 | ||
2131 | name = name.substr (0, pos); | |
2132 | std::replace (name.begin (), name.end (), '/', '_'); | |
2133 | std::replace (name.begin (), name.end (), '-', '_'); | |
2134 | ||
2135 | printf_unfiltered ("static int\n"); | |
2136 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
2137 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
2138 | ||
2139 | printf_unfiltered ("{\n"); | |
2140 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
0abe8a89 YQ |
2141 | |
2142 | printf_unfiltered | |
2143 | ("\n feature = tdesc_create_feature (result, \"%s\", \"%s\");\n", | |
f65ff9f9 | 2144 | e->name.c_str (), lbasename (m_filename_after_features.c_str ())); |
25aa13e5 YQ |
2145 | } |
2146 | ||
2147 | void visit_post (const tdesc_feature *e) override | |
2148 | { | |
2149 | printf_unfiltered (" return regnum;\n"); | |
2150 | printf_unfiltered ("}\n"); | |
2151 | } | |
2152 | ||
2153 | void visit (const tdesc_reg *reg) override | |
2154 | { | |
ea03d0d3 YQ |
2155 | /* Most "reg" in XML target descriptions don't have "regnum" |
2156 | attribute, so the register number is allocated sequentially. | |
2157 | In case that reg has "regnum" attribute, register number | |
2158 | should be set by that explicitly. */ | |
2159 | ||
2160 | if (reg->target_regnum < m_next_regnum) | |
2161 | { | |
2162 | /* The integrity check, it can catch some errors on register | |
2163 | number collision, like this, | |
2164 | ||
2165 | <reg name="x0" bitsize="32"/> | |
2166 | <reg name="x1" bitsize="32"/> | |
2167 | <reg name="x2" bitsize="32"/> | |
2168 | <reg name="x3" bitsize="32"/> | |
2169 | <reg name="ps" bitsize="32" regnum="3"/> | |
2170 | ||
2171 | but it also has false negatives. The target description | |
2172 | below is correct, | |
2173 | ||
2174 | <reg name="x1" bitsize="32" regnum="1"/> | |
2175 | <reg name="x3" bitsize="32" regnum="3"/> | |
2176 | <reg name="x2" bitsize="32" regnum="2"/> | |
2177 | <reg name="x4" bitsize="32" regnum="4"/> | |
2178 | ||
2179 | but it is not a good practice, so still error on this, | |
2180 | and also print the message so that it can be saved in the | |
2181 | generated c file. */ | |
2182 | ||
2183 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
2184 | reg->target_regnum); | |
2185 | printf_unfiltered ("is not the largest number (%d).\n", | |
2186 | m_next_regnum); | |
2187 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
2188 | reg->target_regnum, m_next_regnum); | |
2189 | } | |
2190 | ||
2191 | if (reg->target_regnum > m_next_regnum) | |
2192 | { | |
2193 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
2194 | m_next_regnum = reg->target_regnum; | |
2195 | } | |
2196 | ||
25aa13e5 YQ |
2197 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
2198 | reg->name, reg->save_restore); | |
2199 | if (reg->group) | |
2200 | printf_unfiltered ("\"%s\", ", reg->group); | |
2201 | else | |
2202 | printf_unfiltered ("NULL, "); | |
2203 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
ea03d0d3 YQ |
2204 | |
2205 | m_next_regnum++; | |
25aa13e5 YQ |
2206 | } |
2207 | ||
ea03d0d3 YQ |
2208 | private: |
2209 | /* The register number to use for the next register we see. */ | |
2210 | int m_next_regnum = 0; | |
25aa13e5 YQ |
2211 | }; |
2212 | ||
81adfced | 2213 | static void |
e100df1a | 2214 | maint_print_c_tdesc_cmd (const char *args, int from_tty) |
81adfced DJ |
2215 | { |
2216 | const struct target_desc *tdesc; | |
6eb1e6a8 | 2217 | const char *filename; |
81adfced | 2218 | |
8e2141c6 YQ |
2219 | if (args == NULL) |
2220 | { | |
2221 | /* Use the global target-supplied description, not the current | |
2222 | architecture's. This lets a GDB for one architecture generate C | |
2223 | for another architecture's description, even though the gdbarch | |
2224 | initialization code will reject the new description. */ | |
2225 | tdesc = current_target_desc; | |
2226 | filename = target_description_filename; | |
2227 | } | |
2228 | else | |
2229 | { | |
2230 | /* Use the target description from the XML file. */ | |
2231 | filename = args; | |
2232 | tdesc = file_read_description_xml (filename); | |
2233 | } | |
2234 | ||
81adfced DJ |
2235 | if (tdesc == NULL) |
2236 | error (_("There is no target description to print.")); | |
2237 | ||
8e2141c6 | 2238 | if (filename == NULL) |
81adfced DJ |
2239 | error (_("The current target description did not come from an XML file.")); |
2240 | ||
6eb1e6a8 YQ |
2241 | std::string filename_after_features (filename); |
2242 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 2243 | |
6eb1e6a8 YQ |
2244 | if (loc != std::string::npos) |
2245 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 2246 | |
25aa13e5 YQ |
2247 | /* Print c files for target features instead of target descriptions, |
2248 | because c files got from target features are more flexible than the | |
2249 | counterparts. */ | |
6c73f67f YQ |
2250 | if (startswith (filename_after_features.c_str (), "i386/32bit-") |
2251 | || startswith (filename_after_features.c_str (), "i386/64bit-") | |
506fe5f4 | 2252 | || startswith (filename_after_features.c_str (), "i386/x32-core.xml") |
49bdb7ee AH |
2253 | || startswith (filename_after_features.c_str (), "tic6x-") |
2254 | || startswith (filename_after_features.c_str (), "aarch64")) | |
25aa13e5 YQ |
2255 | { |
2256 | print_c_feature v (filename_after_features); | |
81adfced | 2257 | |
25aa13e5 YQ |
2258 | tdesc->accept (v); |
2259 | } | |
2260 | else | |
2261 | { | |
2262 | print_c_tdesc v (filename_after_features); | |
2263 | ||
2264 | tdesc->accept (v); | |
2265 | } | |
81adfced DJ |
2266 | } |
2267 | ||
27d41eac YQ |
2268 | namespace selftests { |
2269 | ||
2270 | static std::vector<std::pair<const char*, const target_desc *>> xml_tdesc; | |
2271 | ||
2272 | #if GDB_SELF_TEST | |
2273 | ||
2274 | /* See target-descritpions.h. */ | |
2275 | ||
2276 | void | |
2277 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
2278 | { | |
2279 | xml_tdesc.emplace_back (xml_file, tdesc); | |
2280 | } | |
2281 | #endif | |
2282 | ||
2283 | } | |
2284 | ||
2285 | /* Check that the target descriptions created dynamically by | |
2286 | architecture-specific code equal the descriptions created from XML files | |
2287 | found in the specified directory DIR. */ | |
2288 | ||
2289 | static void | |
e100df1a | 2290 | maintenance_check_xml_descriptions (const char *dir, int from_tty) |
27d41eac YQ |
2291 | { |
2292 | if (dir == NULL) | |
2293 | error (_("Missing dir name")); | |
2294 | ||
2295 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
2296 | std::string feature_dir (dir1.get ()); | |
2297 | unsigned int failed = 0; | |
2298 | ||
2299 | for (auto const &e : selftests::xml_tdesc) | |
2300 | { | |
2301 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.first); | |
2302 | const target_desc *tdesc | |
2303 | = file_read_description_xml (tdesc_xml.data ()); | |
2304 | ||
2305 | if (tdesc == NULL || *tdesc != *e.second) | |
2306 | failed++; | |
2307 | } | |
2308 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
2309 | (long) selftests::xml_tdesc.size (), failed); | |
2310 | } | |
2311 | ||
23181151 DJ |
2312 | void |
2313 | _initialize_target_descriptions (void) | |
2314 | { | |
123dc839 DJ |
2315 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
2316 | ||
23181151 DJ |
2317 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
2318 | Set target description specific variables."), | |
2319 | &tdesc_set_cmdlist, "set tdesc ", | |
2320 | 0 /* allow-unknown */, &setlist); | |
2321 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
2322 | Show target description specific variables."), | |
2323 | &tdesc_show_cmdlist, "show tdesc ", | |
2324 | 0 /* allow-unknown */, &showlist); | |
2325 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2326 | Unset target description specific variables."), | |
2327 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2328 | 0 /* allow-unknown */, &unsetlist); | |
2329 | ||
2330 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2331 | &tdesc_filename_cmd_string, |
23181151 DJ |
2332 | _("\ |
2333 | Set the file to read for an XML target description"), _("\ | |
2334 | Show the file to read for an XML target description"), _("\ | |
2335 | When set, GDB will read the target description from a local\n\ | |
2336 | file instead of querying the remote target."), | |
2337 | set_tdesc_filename_cmd, | |
2338 | show_tdesc_filename_cmd, | |
2339 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2340 | ||
2341 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2342 | Unset the file to read for an XML target description. When unset,\n\ | |
2343 | GDB will read the description from the target."), | |
2344 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2345 | |
2346 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2347 | Print the current target description as a C source file."), | |
2348 | &maintenanceprintlist); | |
27d41eac YQ |
2349 | |
2350 | cmd_list_element *cmd; | |
2351 | ||
2352 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
2353 | maintenance_check_xml_descriptions, _("\ | |
2354 | Check the target descriptions created in GDB equal the descriptions\n\ | |
2355 | created from XML files in the directory.\n\ | |
2356 | The parameter is the directory name."), | |
2357 | &maintenancechecklist); | |
2358 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 2359 | } |