Commit | Line | Data |
---|---|---|
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 | { |
a8142ee1 | 78 | tdesc_reg (struct tdesc_feature *feature, const std::string &name_, |
72ddacb7 YQ |
79 | int regnum, int save_restore_, const char *group_, |
80 | int bitsize_, const char *type_) | |
a8142ee1 | 81 | : name (name_), target_regnum (regnum), |
72ddacb7 | 82 | save_restore (save_restore_), |
a8142ee1 | 83 | group (group_ != NULL ? group_ : ""), |
72ddacb7 | 84 | bitsize (bitsize_), |
a8142ee1 | 85 | type (type_ != NULL ? type_ : "<unknown>") |
72ddacb7 YQ |
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. */ | |
a8142ee1 | 89 | tdesc_type = tdesc_named_type (feature, type.c_str ()); |
72ddacb7 YQ |
90 | } |
91 | ||
a8142ee1 | 92 | virtual ~tdesc_reg () = default; |
72ddacb7 | 93 | |
d6541620 | 94 | DISABLE_COPY_AND_ASSIGN (tdesc_reg); |
72ddacb7 | 95 | |
123dc839 DJ |
96 | /* The name of this register. In standard features, it may be |
97 | recognized by the architecture support code, or it may be purely | |
98 | for the user. */ | |
a8142ee1 | 99 | std::string name; |
123dc839 DJ |
100 | |
101 | /* The register number used by this target to refer to this | |
102 | register. This is used for remote p/P packets and to determine | |
103 | the ordering of registers in the remote g/G packets. */ | |
104 | long target_regnum; | |
105 | ||
106 | /* If this flag is set, GDB should save and restore this register | |
107 | around calls to an inferior function. */ | |
108 | int save_restore; | |
109 | ||
a8142ee1 | 110 | /* The name of the register group containing this register, or empty |
123dc839 DJ |
111 | if the group should be automatically determined from the |
112 | register's type. If this is "general", "float", or "vector", the | |
113 | corresponding "info" command should display this register's | |
114 | value. It can be an arbitrary string, but should be limited to | |
115 | alphanumeric characters and internal hyphens. Currently other | |
a8142ee1 SM |
116 | strings are ignored (treated as empty). */ |
117 | std::string group; | |
123dc839 DJ |
118 | |
119 | /* The size of the register, in bits. */ | |
120 | int bitsize; | |
121 | ||
122 | /* The type of the register. This string corresponds to either | |
123 | a named type from the target description or a predefined | |
124 | type from GDB. */ | |
a8142ee1 | 125 | std::string type; |
123dc839 DJ |
126 | |
127 | /* The target-described type corresponding to TYPE, if found. */ | |
ad068eab | 128 | struct tdesc_type *tdesc_type; |
6eb1e6a8 YQ |
129 | |
130 | void accept (tdesc_element_visitor &v) const override | |
131 | { | |
132 | v.visit (this); | |
133 | } | |
134 | ||
27d41eac YQ |
135 | bool operator== (const tdesc_reg &other) const |
136 | { | |
a8142ee1 | 137 | return (name == other.name |
27d41eac YQ |
138 | && target_regnum == other.target_regnum |
139 | && save_restore == other.save_restore | |
140 | && bitsize == other.bitsize | |
a8142ee1 SM |
141 | && group == other.group |
142 | && type == other.type); | |
27d41eac YQ |
143 | } |
144 | ||
145 | bool operator!= (const tdesc_reg &other) const | |
146 | { | |
147 | return !(*this == other); | |
148 | } | |
c9c895b9 SM |
149 | }; |
150 | ||
151 | typedef std::unique_ptr<tdesc_reg> tdesc_reg_up; | |
123dc839 DJ |
152 | |
153 | /* A named type from a target description. */ | |
ad068eab | 154 | |
d05200d1 | 155 | struct tdesc_type_field |
ad068eab | 156 | { |
d05200d1 SM |
157 | tdesc_type_field (const std::string &name_, tdesc_type *type_, |
158 | int start_, int end_) | |
159 | : name (name_), type (type_), start (start_), end (end_) | |
160 | {} | |
161 | ||
162 | std::string name; | |
ad068eab | 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; |
d05200d1 | 168 | }; |
ad068eab | 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 | ||
53c934e9 | 199 | struct tdesc_type : tdesc_element |
ad068eab | 200 | { |
082b9140 SM |
201 | tdesc_type (const std::string &name_, enum tdesc_type_kind kind_) |
202 | : name (name_), kind (kind_) | |
72ddacb7 YQ |
203 | { |
204 | memset (&u, 0, sizeof (u)); | |
d05200d1 SM |
205 | |
206 | switch (kind) | |
207 | { | |
208 | case TDESC_TYPE_STRUCT: | |
209 | case TDESC_TYPE_UNION: | |
210 | case TDESC_TYPE_FLAGS: | |
211 | case TDESC_TYPE_ENUM: | |
212 | u.u.fields = new std::vector<tdesc_type_field> (); | |
213 | break; | |
214 | ||
215 | default: | |
216 | break; | |
217 | } | |
72ddacb7 YQ |
218 | } |
219 | ||
6eb1e6a8 | 220 | virtual ~tdesc_type () |
72ddacb7 YQ |
221 | { |
222 | switch (kind) | |
223 | { | |
224 | case TDESC_TYPE_STRUCT: | |
225 | case TDESC_TYPE_UNION: | |
226 | case TDESC_TYPE_FLAGS: | |
227 | case TDESC_TYPE_ENUM: | |
d05200d1 | 228 | delete u.u.fields; |
72ddacb7 YQ |
229 | break; |
230 | ||
231 | default: | |
232 | break; | |
233 | } | |
72ddacb7 | 234 | } |
d6541620 YQ |
235 | |
236 | DISABLE_COPY_AND_ASSIGN (tdesc_type); | |
72ddacb7 | 237 | |
082b9140 SM |
238 | /* The name of this type. */ |
239 | std::string 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 | { | |
d05200d1 | 257 | std::vector<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 | { | |
082b9140 | 269 | return name == other.name && kind == other.kind; |
27d41eac YQ |
270 | } |
271 | ||
272 | bool operator!= (const tdesc_type &other) const | |
273 | { | |
274 | return !(*this == other); | |
275 | } | |
53c934e9 SM |
276 | }; |
277 | ||
278 | typedef std::unique_ptr<tdesc_type> tdesc_type_up; | |
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 | ||
53c934e9 | 289 | virtual ~tdesc_feature () = default; |
72ddacb7 | 290 | |
d6541620 | 291 | DISABLE_COPY_AND_ASSIGN (tdesc_feature); |
72ddacb7 | 292 | |
123dc839 DJ |
293 | /* The name of this feature. It may be recognized by the architecture |
294 | support code. */ | |
f65ff9f9 | 295 | std::string name; |
123dc839 DJ |
296 | |
297 | /* The registers associated with this feature. */ | |
c9c895b9 | 298 | std::vector<std::unique_ptr<tdesc_reg>> registers; |
123dc839 DJ |
299 | |
300 | /* The types associated with this feature. */ | |
53c934e9 | 301 | std::vector<tdesc_type_up> types; |
6eb1e6a8 YQ |
302 | |
303 | void accept (tdesc_element_visitor &v) const override | |
304 | { | |
25aa13e5 | 305 | v.visit_pre (this); |
6eb1e6a8 | 306 | |
53c934e9 | 307 | for (const tdesc_type_up &type : types) |
6eb1e6a8 YQ |
308 | type->accept (v); |
309 | ||
c9c895b9 | 310 | for (const tdesc_reg_up ® : registers) |
6eb1e6a8 YQ |
311 | reg->accept (v); |
312 | ||
25aa13e5 YQ |
313 | v.visit_post (this); |
314 | } | |
27d41eac YQ |
315 | |
316 | bool operator== (const tdesc_feature &other) const | |
317 | { | |
f65ff9f9 | 318 | if (name != other.name) |
27d41eac YQ |
319 | return false; |
320 | ||
c9c895b9 | 321 | if (registers.size () != other.registers.size ()) |
27d41eac YQ |
322 | return false; |
323 | ||
c9c895b9 | 324 | for (int ix = 0; ix < registers.size (); ix++) |
27d41eac | 325 | { |
c9c895b9 SM |
326 | const tdesc_reg_up ®1 = registers[ix]; |
327 | const tdesc_reg_up ®2 = other.registers[ix]; | |
27d41eac | 328 | |
c9c895b9 | 329 | if (reg1 != reg2 && *reg1 != *reg2) |
27d41eac YQ |
330 | return false; |
331 | } | |
332 | ||
53c934e9 | 333 | if (types.size () != other.types.size ()) |
27d41eac YQ |
334 | return false; |
335 | ||
53c934e9 | 336 | for (int ix = 0; ix < types.size (); ix++) |
27d41eac | 337 | { |
53c934e9 SM |
338 | const tdesc_type_up &type1 = types[ix]; |
339 | const tdesc_type_up &type2 = other.types[ix]; | |
27d41eac | 340 | |
53c934e9 | 341 | if (type1 != type2 && *type1 != *type2) |
27d41eac YQ |
342 | return false; |
343 | } | |
344 | ||
345 | return true; | |
346 | } | |
347 | ||
348 | bool operator!= (const tdesc_feature &other) const | |
349 | { | |
350 | return !(*this == other); | |
351 | } | |
3eea796c SM |
352 | }; |
353 | ||
354 | typedef std::unique_ptr<tdesc_feature> tdesc_feature_up; | |
123dc839 DJ |
355 | |
356 | /* A target description. */ | |
357 | ||
6eb1e6a8 | 358 | struct target_desc : tdesc_element |
424163ea | 359 | { |
b468ff4c YQ |
360 | target_desc () |
361 | {} | |
362 | ||
3eea796c | 363 | virtual ~target_desc () = default; |
b468ff4c YQ |
364 | |
365 | target_desc (const target_desc &) = delete; | |
366 | void operator= (const target_desc &) = delete; | |
367 | ||
23181151 | 368 | /* The architecture reported by the target, if any. */ |
b468ff4c | 369 | const struct bfd_arch_info *arch = NULL; |
23181151 | 370 | |
08d16641 PA |
371 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
372 | otherwise. */ | |
b468ff4c | 373 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 374 | |
e35359c5 | 375 | /* The list of compatible architectures reported by the target. */ |
40e2a983 | 376 | std::vector<const bfd_arch_info *> compatible; |
e35359c5 | 377 | |
29709017 | 378 | /* Any architecture-specific properties specified by the target. */ |
129c10bc | 379 | std::vector<property> properties; |
123dc839 DJ |
380 | |
381 | /* The features associated with this target. */ | |
3eea796c | 382 | std::vector<std::unique_ptr<tdesc_feature>> features; |
6eb1e6a8 YQ |
383 | |
384 | void accept (tdesc_element_visitor &v) const override | |
385 | { | |
386 | v.visit_pre (this); | |
387 | ||
3eea796c | 388 | for (const tdesc_feature_up &feature : features) |
6eb1e6a8 YQ |
389 | feature->accept (v); |
390 | ||
391 | v.visit_post (this); | |
392 | } | |
27d41eac YQ |
393 | |
394 | bool operator== (const target_desc &other) const | |
395 | { | |
396 | if (arch != other.arch) | |
397 | return false; | |
398 | ||
399 | if (osabi != other.osabi) | |
400 | return false; | |
401 | ||
3eea796c | 402 | if (features.size () != other.features.size ()) |
27d41eac YQ |
403 | return false; |
404 | ||
3eea796c | 405 | for (int ix = 0; ix < features.size (); ix++) |
27d41eac | 406 | { |
3eea796c SM |
407 | const tdesc_feature_up &feature1 = features[ix]; |
408 | const tdesc_feature_up &feature2 = other.features[ix]; | |
27d41eac | 409 | |
3eea796c | 410 | if (feature1 != feature2 && *feature1 != *feature2) |
27d41eac YQ |
411 | return false; |
412 | } | |
413 | ||
414 | return true; | |
415 | } | |
416 | ||
417 | bool operator!= (const target_desc &other) const | |
418 | { | |
419 | return !(*this == other); | |
420 | } | |
123dc839 DJ |
421 | }; |
422 | ||
423 | /* Per-architecture data associated with a target description. The | |
424 | target description may be shared by multiple architectures, but | |
425 | this data is private to one gdbarch. */ | |
426 | ||
ad068eab UW |
427 | typedef struct tdesc_arch_reg |
428 | { | |
429 | struct tdesc_reg *reg; | |
430 | struct type *type; | |
431 | } tdesc_arch_reg; | |
432 | DEF_VEC_O(tdesc_arch_reg); | |
433 | ||
123dc839 DJ |
434 | struct tdesc_arch_data |
435 | { | |
ad068eab | 436 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
437 | During initialization of the gdbarch this list is used to store |
438 | registers which the architecture assigns a fixed register number. | |
439 | Registers which are NULL in this array, or off the end, are | |
440 | treated as zero-sized and nameless (i.e. placeholders in the | |
441 | numbering). */ | |
ad068eab | 442 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
443 | |
444 | /* Functions which report the register name, type, and reggroups for | |
445 | pseudo-registers. */ | |
446 | gdbarch_register_name_ftype *pseudo_register_name; | |
447 | gdbarch_register_type_ftype *pseudo_register_type; | |
448 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
449 | }; |
450 | ||
6ecd4729 PA |
451 | /* Info about an inferior's target description. There's one of these |
452 | for each inferior. */ | |
424163ea | 453 | |
6ecd4729 PA |
454 | struct target_desc_info |
455 | { | |
456 | /* A flag indicating that a description has already been fetched | |
457 | from the target, so it should not be queried again. */ | |
458 | ||
459 | int fetched; | |
424163ea | 460 | |
6ecd4729 PA |
461 | /* The description fetched from the target, or NULL if the target |
462 | did not supply any description. Only valid when | |
463 | target_desc_fetched is set. Only the description initialization | |
464 | code should access this; normally, the description should be | |
465 | accessed through the gdbarch object. */ | |
424163ea | 466 | |
6ecd4729 | 467 | const struct target_desc *tdesc; |
424163ea | 468 | |
6ecd4729 PA |
469 | /* The filename to read a target description from, as set by "set |
470 | tdesc filename ..." */ | |
424163ea | 471 | |
6ecd4729 PA |
472 | char *filename; |
473 | }; | |
23181151 | 474 | |
6ecd4729 PA |
475 | /* Get the inferior INF's target description info, allocating one on |
476 | the stop if necessary. */ | |
23181151 | 477 | |
6ecd4729 PA |
478 | static struct target_desc_info * |
479 | get_tdesc_info (struct inferior *inf) | |
480 | { | |
481 | if (inf->tdesc_info == NULL) | |
482 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
483 | return inf->tdesc_info; | |
484 | } | |
23181151 | 485 | |
123dc839 DJ |
486 | /* A handle for architecture-specific data associated with the |
487 | target description (see struct tdesc_arch_data). */ | |
488 | ||
489 | static struct gdbarch_data *tdesc_data; | |
490 | ||
6ecd4729 PA |
491 | /* See target-descriptions.h. */ |
492 | ||
493 | int | |
494 | target_desc_info_from_user_p (struct target_desc_info *info) | |
495 | { | |
496 | return info != NULL && info->filename != NULL; | |
497 | } | |
498 | ||
499 | /* See target-descriptions.h. */ | |
500 | ||
501 | void | |
502 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
503 | { | |
504 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
505 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
506 | ||
507 | dest->fetched = src->fetched; | |
508 | dest->tdesc = src->tdesc; | |
509 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
510 | } | |
511 | ||
512 | /* See target-descriptions.h. */ | |
513 | ||
514 | void | |
515 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
516 | { | |
517 | if (tdesc_info != NULL) | |
518 | { | |
519 | xfree (tdesc_info->filename); | |
520 | xfree (tdesc_info); | |
521 | } | |
522 | } | |
523 | ||
524 | /* Convenience helper macros. */ | |
525 | ||
526 | #define target_desc_fetched \ | |
527 | get_tdesc_info (current_inferior ())->fetched | |
528 | #define current_target_desc \ | |
529 | get_tdesc_info (current_inferior ())->tdesc | |
530 | #define target_description_filename \ | |
531 | get_tdesc_info (current_inferior ())->filename | |
532 | ||
533 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
534 | ||
535 | static char *tdesc_filename_cmd_string; | |
536 | ||
424163ea DJ |
537 | /* Fetch the current target's description, and switch the current |
538 | architecture to one which incorporates that description. */ | |
539 | ||
540 | void | |
541 | target_find_description (void) | |
542 | { | |
543 | /* If we've already fetched a description from the target, don't do | |
544 | it again. This allows a target to fetch the description early, | |
545 | during its to_open or to_create_inferior, if it needs extra | |
546 | information about the target to initialize. */ | |
547 | if (target_desc_fetched) | |
548 | return; | |
549 | ||
550 | /* The current architecture should not have any target description | |
551 | specified. It should have been cleared, e.g. when we | |
552 | disconnected from the previous target. */ | |
f5656ead | 553 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 554 | |
23181151 DJ |
555 | /* First try to fetch an XML description from the user-specified |
556 | file. */ | |
557 | current_target_desc = NULL; | |
558 | if (target_description_filename != NULL | |
559 | && *target_description_filename != '\0') | |
560 | current_target_desc | |
561 | = file_read_description_xml (target_description_filename); | |
562 | ||
563 | /* Next try to read the description from the current target using | |
564 | target objects. */ | |
565 | if (current_target_desc == NULL) | |
566 | current_target_desc = target_read_description_xml (¤t_target); | |
567 | ||
568 | /* If that failed try a target-specific hook. */ | |
569 | if (current_target_desc == NULL) | |
570 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
571 | |
572 | /* If a non-NULL description was returned, then update the current | |
573 | architecture. */ | |
574 | if (current_target_desc) | |
575 | { | |
576 | struct gdbarch_info info; | |
577 | ||
578 | gdbarch_info_init (&info); | |
579 | info.target_desc = current_target_desc; | |
580 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
581 | warning (_("Architecture rejected target-supplied description")); |
582 | else | |
583 | { | |
584 | struct tdesc_arch_data *data; | |
585 | ||
19ba03f4 SM |
586 | data = ((struct tdesc_arch_data *) |
587 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 588 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 589 | && data->arch_regs == NULL) |
123dc839 DJ |
590 | warning (_("Target-supplied registers are not supported " |
591 | "by the current architecture")); | |
592 | } | |
424163ea DJ |
593 | } |
594 | ||
595 | /* Now that we know this description is usable, record that we | |
596 | fetched it. */ | |
597 | target_desc_fetched = 1; | |
598 | } | |
599 | ||
600 | /* Discard any description fetched from the current target, and switch | |
601 | the current architecture to one with no target description. */ | |
602 | ||
603 | void | |
604 | target_clear_description (void) | |
605 | { | |
606 | struct gdbarch_info info; | |
607 | ||
608 | if (!target_desc_fetched) | |
609 | return; | |
610 | ||
611 | target_desc_fetched = 0; | |
612 | current_target_desc = NULL; | |
613 | ||
614 | gdbarch_info_init (&info); | |
615 | if (!gdbarch_update_p (info)) | |
616 | internal_error (__FILE__, __LINE__, | |
617 | _("Could not remove target-supplied description")); | |
618 | } | |
619 | ||
620 | /* Return the global current target description. This should only be | |
621 | used by gdbarch initialization code; most access should be through | |
622 | an existing gdbarch. */ | |
623 | ||
624 | const struct target_desc * | |
625 | target_current_description (void) | |
626 | { | |
627 | if (target_desc_fetched) | |
628 | return current_target_desc; | |
629 | ||
630 | return NULL; | |
631 | } | |
e35359c5 UW |
632 | |
633 | /* Return non-zero if this target description is compatible | |
634 | with the given BFD architecture. */ | |
635 | ||
636 | int | |
637 | tdesc_compatible_p (const struct target_desc *target_desc, | |
638 | const struct bfd_arch_info *arch) | |
639 | { | |
40e2a983 | 640 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
641 | { |
642 | if (compat == arch | |
643 | || arch->compatible (arch, compat) | |
644 | || compat->compatible (compat, arch)) | |
645 | return 1; | |
646 | } | |
647 | ||
648 | return 0; | |
649 | } | |
23181151 DJ |
650 | \f |
651 | ||
123dc839 | 652 | /* Direct accessors for target descriptions. */ |
424163ea | 653 | |
29709017 DJ |
654 | /* Return the string value of a property named KEY, or NULL if the |
655 | property was not specified. */ | |
656 | ||
657 | const char * | |
658 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
659 | { | |
129c10bc SM |
660 | for (const property &prop : target_desc->properties) |
661 | if (prop.key == key) | |
662 | return prop.value.c_str (); | |
29709017 DJ |
663 | |
664 | return NULL; | |
665 | } | |
666 | ||
23181151 DJ |
667 | /* Return the BFD architecture associated with this target |
668 | description, or NULL if no architecture was specified. */ | |
669 | ||
670 | const struct bfd_arch_info * | |
671 | tdesc_architecture (const struct target_desc *target_desc) | |
672 | { | |
673 | return target_desc->arch; | |
674 | } | |
08d16641 PA |
675 | |
676 | /* Return the OSABI associated with this target description, or | |
677 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
678 | ||
679 | enum gdb_osabi | |
680 | tdesc_osabi (const struct target_desc *target_desc) | |
681 | { | |
682 | return target_desc->osabi; | |
683 | } | |
684 | ||
23181151 DJ |
685 | \f |
686 | ||
123dc839 DJ |
687 | /* Return 1 if this target description includes any registers. */ |
688 | ||
689 | int | |
690 | tdesc_has_registers (const struct target_desc *target_desc) | |
691 | { | |
123dc839 DJ |
692 | if (target_desc == NULL) |
693 | return 0; | |
694 | ||
3eea796c | 695 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 696 | if (!feature->registers.empty ()) |
123dc839 DJ |
697 | return 1; |
698 | ||
699 | return 0; | |
700 | } | |
701 | ||
702 | /* Return the feature with the given name, if present, or NULL if | |
703 | the named feature is not found. */ | |
704 | ||
705 | const struct tdesc_feature * | |
706 | tdesc_find_feature (const struct target_desc *target_desc, | |
707 | const char *name) | |
708 | { | |
3eea796c | 709 | for (const tdesc_feature_up &feature : target_desc->features) |
f65ff9f9 | 710 | if (feature->name == name) |
3eea796c | 711 | return feature.get (); |
123dc839 DJ |
712 | |
713 | return NULL; | |
714 | } | |
715 | ||
716 | /* Return the name of FEATURE. */ | |
717 | ||
718 | const char * | |
719 | tdesc_feature_name (const struct tdesc_feature *feature) | |
720 | { | |
f65ff9f9 | 721 | return feature->name.c_str (); |
123dc839 DJ |
722 | } |
723 | ||
ad068eab UW |
724 | /* Predefined types. */ |
725 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 726 | { |
81516450 | 727 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
728 | { "int8", TDESC_TYPE_INT8 }, |
729 | { "int16", TDESC_TYPE_INT16 }, | |
730 | { "int32", TDESC_TYPE_INT32 }, | |
731 | { "int64", TDESC_TYPE_INT64 }, | |
732 | { "int128", TDESC_TYPE_INT128 }, | |
733 | { "uint8", TDESC_TYPE_UINT8 }, | |
734 | { "uint16", TDESC_TYPE_UINT16 }, | |
735 | { "uint32", TDESC_TYPE_UINT32 }, | |
736 | { "uint64", TDESC_TYPE_UINT64 }, | |
737 | { "uint128", TDESC_TYPE_UINT128 }, | |
738 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
739 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
740 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
741 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 742 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 743 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 744 | }; |
81adfced | 745 | |
81516450 DE |
746 | /* Lookup a predefined type. */ |
747 | ||
748 | static struct tdesc_type * | |
749 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
750 | { | |
798a7429 | 751 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
81516450 DE |
752 | if (tdesc_predefined_types[ix].kind == kind) |
753 | return &tdesc_predefined_types[ix]; | |
754 | ||
755 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
756 | } | |
757 | ||
f49ff000 | 758 | /* See arch/tdesc.h. */ |
123dc839 | 759 | |
ad068eab | 760 | struct tdesc_type * |
123dc839 DJ |
761 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
762 | { | |
123dc839 | 763 | /* First try target-defined types. */ |
53c934e9 | 764 | for (const tdesc_type_up &type : feature->types) |
082b9140 | 765 | if (type->name == id) |
53c934e9 | 766 | return type.get (); |
123dc839 | 767 | |
81adfced | 768 | /* Next try the predefined types. */ |
53c934e9 | 769 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
082b9140 | 770 | if (tdesc_predefined_types[ix].name == id) |
ad068eab | 771 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
772 | |
773 | return NULL; | |
774 | } | |
ad068eab | 775 | |
9fd3625f L |
776 | /* Lookup type associated with ID. */ |
777 | ||
778 | struct type * | |
779 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
780 | { | |
781 | struct tdesc_arch_reg *reg; | |
782 | struct tdesc_arch_data *data; | |
783 | int i, num_regs; | |
784 | ||
19ba03f4 | 785 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
9fd3625f L |
786 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); |
787 | for (i = 0; i < num_regs; i++) | |
788 | { | |
789 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); | |
790 | if (reg->reg | |
791 | && reg->reg->tdesc_type | |
792 | && reg->type | |
082b9140 | 793 | && reg->reg->tdesc_type->name == id) |
9fd3625f L |
794 | return reg->type; |
795 | } | |
796 | ||
797 | return NULL; | |
798 | } | |
799 | ||
ad068eab UW |
800 | /* Construct, if necessary, and return the GDB type implementing target |
801 | type TDESC_TYPE for architecture GDBARCH. */ | |
802 | ||
803 | static struct type * | |
804 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
805 | { | |
9fd3625f L |
806 | struct type *type; |
807 | ||
ad068eab UW |
808 | switch (tdesc_type->kind) |
809 | { | |
810 | /* Predefined types. */ | |
81516450 DE |
811 | case TDESC_TYPE_BOOL: |
812 | return builtin_type (gdbarch)->builtin_bool; | |
813 | ||
ad068eab | 814 | case TDESC_TYPE_INT8: |
df4df182 | 815 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
816 | |
817 | case TDESC_TYPE_INT16: | |
df4df182 | 818 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
819 | |
820 | case TDESC_TYPE_INT32: | |
df4df182 | 821 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
822 | |
823 | case TDESC_TYPE_INT64: | |
df4df182 | 824 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
825 | |
826 | case TDESC_TYPE_INT128: | |
df4df182 | 827 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
828 | |
829 | case TDESC_TYPE_UINT8: | |
df4df182 | 830 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
831 | |
832 | case TDESC_TYPE_UINT16: | |
df4df182 | 833 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
834 | |
835 | case TDESC_TYPE_UINT32: | |
df4df182 | 836 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
837 | |
838 | case TDESC_TYPE_UINT64: | |
df4df182 | 839 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
840 | |
841 | case TDESC_TYPE_UINT128: | |
df4df182 | 842 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
843 | |
844 | case TDESC_TYPE_CODE_PTR: | |
845 | return builtin_type (gdbarch)->builtin_func_ptr; | |
846 | ||
847 | case TDESC_TYPE_DATA_PTR: | |
848 | return builtin_type (gdbarch)->builtin_data_ptr; | |
849 | ||
9fd3625f L |
850 | default: |
851 | break; | |
852 | } | |
853 | ||
082b9140 | 854 | type = tdesc_find_type (gdbarch, tdesc_type->name.c_str ()); |
9fd3625f L |
855 | if (type) |
856 | return type; | |
857 | ||
858 | switch (tdesc_type->kind) | |
859 | { | |
ad068eab | 860 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 861 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 862 | floatformats_ieee_single); |
ad068eab UW |
863 | |
864 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 865 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 866 | floatformats_ieee_double); |
ad068eab UW |
867 | |
868 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 869 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 870 | floatformats_arm_ext); |
ad068eab | 871 | |
9fd3625f L |
872 | case TDESC_TYPE_I387_EXT: |
873 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
874 | floatformats_i387_ext); | |
875 | ||
ad068eab UW |
876 | /* Types defined by a target feature. */ |
877 | case TDESC_TYPE_VECTOR: | |
878 | { | |
879 | struct type *type, *field_type; | |
880 | ||
881 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
882 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
082b9140 | 883 | TYPE_NAME (type) = xstrdup (tdesc_type->name.c_str ()); |
ad068eab UW |
884 | |
885 | return type; | |
886 | } | |
887 | ||
f5dff777 DJ |
888 | case TDESC_TYPE_STRUCT: |
889 | { | |
890 | struct type *type, *field_type; | |
f5dff777 DJ |
891 | |
892 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); | |
082b9140 | 893 | TYPE_NAME (type) = xstrdup (tdesc_type->name.c_str ()); |
f5dff777 DJ |
894 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
895 | ||
d05200d1 | 896 | for (const tdesc_type_field &f : *tdesc_type->u.u.fields) |
f5dff777 | 897 | { |
d05200d1 | 898 | if (f.start != -1 && f.end != -1) |
f5dff777 DJ |
899 | { |
900 | /* Bitfield. */ | |
901 | struct field *fld; | |
902 | struct type *field_type; | |
903 | int bitsize, total_size; | |
904 | ||
81516450 | 905 | /* This invariant should be preserved while creating types. */ |
f5dff777 | 906 | gdb_assert (tdesc_type->u.u.size != 0); |
d05200d1 SM |
907 | if (f.type != NULL) |
908 | field_type = tdesc_gdb_type (gdbarch, f.type); | |
81516450 | 909 | else if (tdesc_type->u.u.size > 4) |
f5dff777 DJ |
910 | field_type = builtin_type (gdbarch)->builtin_uint64; |
911 | else | |
912 | field_type = builtin_type (gdbarch)->builtin_uint32; | |
913 | ||
d05200d1 SM |
914 | fld = append_composite_type_field_raw |
915 | (type, xstrdup (f.name.c_str ()), field_type); | |
f5dff777 DJ |
916 | |
917 | /* For little-endian, BITPOS counts from the LSB of | |
918 | the structure and marks the LSB of the field. For | |
919 | big-endian, BITPOS counts from the MSB of the | |
920 | structure and marks the MSB of the field. Either | |
921 | way, it is the number of bits to the "left" of the | |
922 | field. To calculate this in big-endian, we need | |
923 | the total size of the structure. */ | |
d05200d1 | 924 | bitsize = f.end - f.start + 1; |
f5dff777 DJ |
925 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; |
926 | if (gdbarch_bits_big_endian (gdbarch)) | |
d05200d1 | 927 | SET_FIELD_BITPOS (fld[0], total_size - f.start - bitsize); |
f5dff777 | 928 | else |
d05200d1 | 929 | SET_FIELD_BITPOS (fld[0], f.start); |
f5dff777 DJ |
930 | FIELD_BITSIZE (fld[0]) = bitsize; |
931 | } | |
932 | else | |
933 | { | |
d05200d1 SM |
934 | gdb_assert (f.start == -1 && f.end == -1); |
935 | field_type = tdesc_gdb_type (gdbarch, f.type); | |
936 | append_composite_type_field (type, xstrdup (f.name.c_str ()), | |
f5dff777 DJ |
937 | field_type); |
938 | } | |
939 | } | |
940 | ||
941 | if (tdesc_type->u.u.size != 0) | |
942 | TYPE_LENGTH (type) = tdesc_type->u.u.size; | |
943 | return type; | |
944 | } | |
945 | ||
ad068eab UW |
946 | case TDESC_TYPE_UNION: |
947 | { | |
948 | struct type *type, *field_type; | |
ad068eab | 949 | |
e9bb382b | 950 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
082b9140 | 951 | TYPE_NAME (type) = xstrdup (tdesc_type->name.c_str ()); |
ad068eab | 952 | |
d05200d1 | 953 | for (const tdesc_type_field &f : *tdesc_type->u.u.fields) |
ad068eab | 954 | { |
d05200d1 SM |
955 | field_type = tdesc_gdb_type (gdbarch, f.type); |
956 | append_composite_type_field (type, xstrdup (f.name.c_str ()), | |
957 | field_type); | |
ad068eab | 958 | |
f5dff777 | 959 | /* If any of the children of a union are vectors, flag the |
ad068eab UW |
960 | union as a vector also. This allows e.g. a union of two |
961 | vector types to show up automatically in "info vector". */ | |
962 | if (TYPE_VECTOR (field_type)) | |
963 | TYPE_VECTOR (type) = 1; | |
964 | } | |
f5dff777 DJ |
965 | return type; |
966 | } | |
967 | ||
968 | case TDESC_TYPE_FLAGS: | |
969 | { | |
082b9140 | 970 | type = arch_flags_type (gdbarch, tdesc_type->name.c_str (), |
77b7c781 | 971 | tdesc_type->u.u.size * TARGET_CHAR_BIT); |
d05200d1 | 972 | for (const tdesc_type_field &f : *tdesc_type->u.u.fields) |
81516450 DE |
973 | { |
974 | struct type *field_type; | |
d05200d1 | 975 | int bitsize = f.end - f.start + 1; |
81516450 | 976 | |
d05200d1 SM |
977 | gdb_assert (f.type != NULL); |
978 | field_type = tdesc_gdb_type (gdbarch, f.type); | |
979 | append_flags_type_field (type, f.start, bitsize, | |
980 | field_type, f.name.c_str ()); | |
81516450 DE |
981 | } |
982 | ||
983 | return type; | |
984 | } | |
985 | ||
986 | case TDESC_TYPE_ENUM: | |
987 | { | |
81516450 | 988 | type = arch_type (gdbarch, TYPE_CODE_ENUM, |
77b7c781 | 989 | tdesc_type->u.u.size * TARGET_CHAR_BIT, |
082b9140 | 990 | tdesc_type->name.c_str ()); |
81516450 | 991 | TYPE_UNSIGNED (type) = 1; |
d05200d1 | 992 | for (const tdesc_type_field &f : *tdesc_type->u.u.fields) |
81516450 DE |
993 | { |
994 | struct field *fld | |
d05200d1 SM |
995 | = append_composite_type_field_raw (type, |
996 | xstrdup (f.name.c_str ()), | |
81516450 DE |
997 | NULL); |
998 | ||
d05200d1 | 999 | SET_FIELD_BITPOS (fld[0], f.start); |
81516450 | 1000 | } |
ad068eab UW |
1001 | |
1002 | return type; | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | internal_error (__FILE__, __LINE__, | |
1007 | "Type \"%s\" has an unknown kind %d", | |
082b9140 | 1008 | tdesc_type->name.c_str (), tdesc_type->kind); |
ad068eab | 1009 | } |
123dc839 DJ |
1010 | \f |
1011 | ||
1012 | /* Support for registers from target descriptions. */ | |
1013 | ||
1014 | /* Construct the per-gdbarch data. */ | |
1015 | ||
1016 | static void * | |
1017 | tdesc_data_init (struct obstack *obstack) | |
1018 | { | |
1019 | struct tdesc_arch_data *data; | |
1020 | ||
1021 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
1022 | return data; | |
1023 | } | |
1024 | ||
1025 | /* Similar, but for the temporary copy used during architecture | |
1026 | initialization. */ | |
1027 | ||
1028 | struct tdesc_arch_data * | |
1029 | tdesc_data_alloc (void) | |
1030 | { | |
41bf6aca | 1031 | return XCNEW (struct tdesc_arch_data); |
123dc839 DJ |
1032 | } |
1033 | ||
1034 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
1035 | to be used (for instance if it was unsuitable for the | |
1036 | architecture). */ | |
1037 | ||
1038 | void | |
1039 | tdesc_data_cleanup (void *data_untyped) | |
1040 | { | |
19ba03f4 | 1041 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 1042 | |
ad068eab | 1043 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
1044 | xfree (data); |
1045 | } | |
1046 | ||
1047 | /* Search FEATURE for a register named NAME. */ | |
1048 | ||
7cc46491 DJ |
1049 | static struct tdesc_reg * |
1050 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
1051 | const char *name) | |
123dc839 | 1052 | { |
c9c895b9 | 1053 | for (const tdesc_reg_up ® : feature->registers) |
a8142ee1 | 1054 | if (strcasecmp (reg->name.c_str (), name) == 0) |
c9c895b9 | 1055 | return reg.get (); |
123dc839 | 1056 | |
7cc46491 DJ |
1057 | return NULL; |
1058 | } | |
1059 | ||
1060 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
1061 | ||
1062 | int | |
1063 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
1064 | struct tdesc_arch_data *data, | |
1065 | int regno, const char *name) | |
1066 | { | |
ad068eab | 1067 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
1068 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
1069 | ||
1070 | if (reg == NULL) | |
1071 | return 0; | |
1072 | ||
1073 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
1074 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
1075 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
1076 | ||
1077 | arch_reg.reg = reg; | |
1078 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 1079 | return 1; |
123dc839 DJ |
1080 | } |
1081 | ||
58d6951d DJ |
1082 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
1083 | register number to it. */ | |
1084 | ||
1085 | int | |
1086 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
1087 | const char *name) | |
1088 | { | |
1089 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1090 | ||
1091 | if (reg == NULL) | |
1092 | return 0; | |
1093 | ||
1094 | return 1; | |
1095 | } | |
1096 | ||
7cc46491 DJ |
1097 | /* Search FEATURE for a register whose name is in NAMES and assign |
1098 | REGNO to it. */ | |
123dc839 DJ |
1099 | |
1100 | int | |
1101 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
1102 | struct tdesc_arch_data *data, | |
1103 | int regno, const char *const names[]) | |
1104 | { | |
1105 | int i; | |
1106 | ||
1107 | for (i = 0; names[i] != NULL; i++) | |
1108 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
1109 | return 1; | |
1110 | ||
1111 | return 0; | |
1112 | } | |
1113 | ||
7cc46491 DJ |
1114 | /* Search FEATURE for a register named NAME, and return its size in |
1115 | bits. The register must exist. */ | |
1116 | ||
1117 | int | |
1118 | tdesc_register_size (const struct tdesc_feature *feature, | |
1119 | const char *name) | |
1120 | { | |
1121 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1122 | ||
1123 | gdb_assert (reg != NULL); | |
1124 | return reg->bitsize; | |
1125 | } | |
1126 | ||
123dc839 DJ |
1127 | /* Look up a register by its GDB internal register number. */ |
1128 | ||
ad068eab UW |
1129 | static struct tdesc_arch_reg * |
1130 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 1131 | { |
123dc839 DJ |
1132 | struct tdesc_arch_data *data; |
1133 | ||
19ba03f4 | 1134 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab UW |
1135 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
1136 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
1137 | else |
1138 | return NULL; | |
1139 | } | |
1140 | ||
ad068eab UW |
1141 | static struct tdesc_reg * |
1142 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
1143 | { | |
1144 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 1145 | |
ad068eab UW |
1146 | return reg? reg->reg : NULL; |
1147 | } | |
1148 | ||
f8b73d13 DJ |
1149 | /* Return the name of register REGNO, from the target description or |
1150 | from an architecture-provided pseudo_register_name method. */ | |
1151 | ||
1152 | const char * | |
d93859e2 | 1153 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 1154 | { |
d93859e2 UW |
1155 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1156 | int num_regs = gdbarch_num_regs (gdbarch); | |
1157 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
1158 | |
1159 | if (reg != NULL) | |
a8142ee1 | 1160 | return reg->name.c_str (); |
123dc839 DJ |
1161 | |
1162 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1163 | { | |
19ba03f4 SM |
1164 | struct tdesc_arch_data *data |
1165 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1166 | |
123dc839 | 1167 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 1168 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
1169 | } |
1170 | ||
1171 | return ""; | |
1172 | } | |
1173 | ||
58d6951d | 1174 | struct type * |
123dc839 DJ |
1175 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
1176 | { | |
ad068eab UW |
1177 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
1178 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1179 | int num_regs = gdbarch_num_regs (gdbarch); |
1180 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1181 | ||
1182 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1183 | { | |
19ba03f4 SM |
1184 | struct tdesc_arch_data *data |
1185 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1186 | |
123dc839 DJ |
1187 | gdb_assert (data->pseudo_register_type != NULL); |
1188 | return data->pseudo_register_type (gdbarch, regno); | |
1189 | } | |
1190 | ||
1191 | if (reg == NULL) | |
1192 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1193 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1194 | |
ad068eab | 1195 | if (arch_reg->type == NULL) |
123dc839 | 1196 | { |
ad068eab UW |
1197 | /* First check for a predefined or target defined type. */ |
1198 | if (reg->tdesc_type) | |
1199 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
1200 | ||
1201 | /* Next try size-sensitive type shortcuts. */ | |
a8142ee1 | 1202 | else if (reg->type == "float") |
ad068eab UW |
1203 | { |
1204 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1205 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1206 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1207 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1208 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1209 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1210 | else | |
1211 | { | |
1212 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 1213 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
1214 | arch_reg->type = builtin_type (gdbarch)->builtin_double; |
1215 | } | |
1216 | } | |
a8142ee1 | 1217 | else if (reg->type == "int") |
ad068eab UW |
1218 | { |
1219 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1220 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1221 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1222 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1223 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1224 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1225 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1226 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1227 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1228 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1229 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1230 | /* A bit desperate by this point... */ |
ad068eab UW |
1231 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1232 | else | |
1233 | { | |
1234 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 1235 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
1236 | arch_reg->type = builtin_type (gdbarch)->builtin_long; |
1237 | } | |
1238 | } | |
1239 | ||
1240 | if (arch_reg->type == NULL) | |
1241 | internal_error (__FILE__, __LINE__, | |
1242 | "Register \"%s\" has an unknown type \"%s\"", | |
a8142ee1 | 1243 | reg->name.c_str (), reg->type.c_str ()); |
123dc839 | 1244 | } |
123dc839 | 1245 | |
ad068eab | 1246 | return arch_reg->type; |
123dc839 DJ |
1247 | } |
1248 | ||
1249 | static int | |
1250 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1251 | { | |
1252 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1253 | ||
1254 | if (reg != NULL) | |
1255 | return reg->target_regnum; | |
1256 | else | |
1257 | return -1; | |
1258 | } | |
1259 | ||
1260 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
1261 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
1262 | Unlike a gdbarch register_reggroup_p method, this function will |
1263 | return -1 if it does not know; the caller should handle registers | |
1264 | with no specified group. | |
123dc839 DJ |
1265 | |
1266 | Arbitrary strings (other than "general", "float", and "vector") | |
1267 | from the description are not used; they cause the register to be | |
1268 | displayed in "info all-registers" but excluded from "info | |
1269 | registers" et al. The names of containing features are also not | |
1270 | used. This might be extended to display registers in some more | |
1271 | useful groupings. | |
1272 | ||
1273 | The save-restore flag is also implemented here. */ | |
1274 | ||
f8b73d13 DJ |
1275 | int |
1276 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1277 | struct reggroup *reggroup) | |
123dc839 | 1278 | { |
123dc839 DJ |
1279 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1280 | ||
a8142ee1 | 1281 | if (reg != NULL && !reg->group.empty ()) |
123dc839 DJ |
1282 | { |
1283 | int general_p = 0, float_p = 0, vector_p = 0; | |
1284 | ||
a8142ee1 | 1285 | if (reg->group == "general") |
123dc839 | 1286 | general_p = 1; |
a8142ee1 | 1287 | else if (reg->group == "float") |
123dc839 | 1288 | float_p = 1; |
a8142ee1 | 1289 | else if (reg->group == "vector") |
123dc839 DJ |
1290 | vector_p = 1; |
1291 | ||
1292 | if (reggroup == float_reggroup) | |
1293 | return float_p; | |
1294 | ||
1295 | if (reggroup == vector_reggroup) | |
1296 | return vector_p; | |
1297 | ||
1298 | if (reggroup == general_reggroup) | |
1299 | return general_p; | |
1300 | } | |
1301 | ||
1302 | if (reg != NULL | |
1303 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1304 | return reg->save_restore; | |
1305 | ||
f8b73d13 DJ |
1306 | return -1; |
1307 | } | |
1308 | ||
1309 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1310 | group specified go to the default reggroup function and are handled | |
1311 | by type. */ | |
1312 | ||
1313 | static int | |
1314 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1315 | struct reggroup *reggroup) | |
1316 | { | |
1317 | int num_regs = gdbarch_num_regs (gdbarch); | |
1318 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1319 | int ret; | |
1320 | ||
1321 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1322 | { | |
19ba03f4 SM |
1323 | struct tdesc_arch_data *data |
1324 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1325 | |
58d6951d DJ |
1326 | if (data->pseudo_register_reggroup_p != NULL) |
1327 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1328 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1329 | } |
1330 | ||
1331 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1332 | if (ret != -1) | |
1333 | return ret; | |
1334 | ||
123dc839 DJ |
1335 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1336 | } | |
1337 | ||
1338 | /* Record architecture-specific functions to call for pseudo-register | |
1339 | support. */ | |
1340 | ||
1341 | void | |
1342 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1343 | gdbarch_register_name_ftype *pseudo_name) | |
1344 | { | |
19ba03f4 SM |
1345 | struct tdesc_arch_data *data |
1346 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1347 | |
1348 | data->pseudo_register_name = pseudo_name; | |
1349 | } | |
1350 | ||
1351 | void | |
1352 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1353 | gdbarch_register_type_ftype *pseudo_type) | |
1354 | { | |
19ba03f4 SM |
1355 | struct tdesc_arch_data *data |
1356 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1357 | |
1358 | data->pseudo_register_type = pseudo_type; | |
1359 | } | |
1360 | ||
1361 | void | |
1362 | set_tdesc_pseudo_register_reggroup_p | |
1363 | (struct gdbarch *gdbarch, | |
1364 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1365 | { | |
19ba03f4 SM |
1366 | struct tdesc_arch_data *data |
1367 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1368 | |
1369 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1370 | } | |
1371 | ||
1372 | /* Update GDBARCH to use the target description for registers. */ | |
1373 | ||
1374 | void | |
1375 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1376 | const struct target_desc *target_desc, |
123dc839 DJ |
1377 | struct tdesc_arch_data *early_data) |
1378 | { | |
1379 | int num_regs = gdbarch_num_regs (gdbarch); | |
123dc839 | 1380 | struct tdesc_arch_data *data; |
ad068eab | 1381 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
1382 | htab_t reg_hash; |
1383 | ||
123dc839 DJ |
1384 | /* We can't use the description for registers if it doesn't describe |
1385 | any. This function should only be called after validating | |
1386 | registers, so the caller should know that registers are | |
1387 | included. */ | |
1388 | gdb_assert (tdesc_has_registers (target_desc)); | |
1389 | ||
19ba03f4 | 1390 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1391 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
1392 | xfree (early_data); |
1393 | ||
1394 | /* Build up a set of all registers, so that we can assign register | |
1395 | numbers where needed. The hash table expands as necessary, so | |
1396 | the initial size is arbitrary. */ | |
1397 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
3eea796c | 1398 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 1399 | for (const tdesc_reg_up ® : feature->registers) |
123dc839 | 1400 | { |
c9c895b9 | 1401 | void **slot = htab_find_slot (reg_hash, reg.get (), INSERT); |
123dc839 | 1402 | |
c9c895b9 | 1403 | *slot = reg.get (); |
123dc839 DJ |
1404 | } |
1405 | ||
1406 | /* Remove any registers which were assigned numbers by the | |
1407 | architecture. */ | |
c9c895b9 | 1408 | for (int ixr = 0; |
ad068eab UW |
1409 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); |
1410 | ixr++) | |
1411 | if (arch_reg->reg) | |
1412 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
1413 | |
1414 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1415 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1416 | Iterate over the features, not the hash table, so that the order |
1417 | matches that in the target description. */ | |
1418 | ||
ad068eab UW |
1419 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1420 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1421 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
3eea796c | 1422 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 SM |
1423 | for (const tdesc_reg_up ® : feature->registers) |
1424 | if (htab_find (reg_hash, reg.get ()) != NULL) | |
123dc839 | 1425 | { |
c9c895b9 | 1426 | new_arch_reg.reg = reg.get (); |
ad068eab | 1427 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); |
123dc839 DJ |
1428 | num_regs++; |
1429 | } | |
1430 | ||
1431 | htab_delete (reg_hash); | |
1432 | ||
1433 | /* Update the architecture. */ | |
1434 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1435 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1436 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1437 | set_gdbarch_remote_register_number (gdbarch, | |
1438 | tdesc_remote_register_number); | |
1439 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1440 | } | |
1441 | \f | |
1442 | ||
f49ff000 YQ |
1443 | /* See arch/tdesc.h. */ |
1444 | ||
123dc839 DJ |
1445 | void |
1446 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1447 | int regnum, int save_restore, const char *group, | |
1448 | int bitsize, const char *type) | |
1449 | { | |
72ddacb7 YQ |
1450 | tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, |
1451 | group, bitsize, type); | |
123dc839 | 1452 | |
c9c895b9 | 1453 | feature->registers.emplace_back (reg); |
123dc839 DJ |
1454 | } |
1455 | ||
f49ff000 YQ |
1456 | /* See arch/tdesc.h. */ |
1457 | ||
ad068eab UW |
1458 | struct tdesc_type * |
1459 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1460 | struct tdesc_type *field_type, int count) | |
1461 | { | |
72ddacb7 | 1462 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_VECTOR); |
ad068eab | 1463 | |
ad068eab UW |
1464 | type->u.v.type = field_type; |
1465 | type->u.v.count = count; | |
1466 | ||
53c934e9 | 1467 | feature->types.emplace_back (type); |
ad068eab UW |
1468 | return type; |
1469 | } | |
1470 | ||
f49ff000 YQ |
1471 | /* See arch/tdesc.h. */ |
1472 | ||
f5dff777 DJ |
1473 | struct tdesc_type * |
1474 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
1475 | { | |
72ddacb7 | 1476 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_STRUCT); |
f5dff777 | 1477 | |
53c934e9 | 1478 | feature->types.emplace_back (type); |
f5dff777 DJ |
1479 | return type; |
1480 | } | |
1481 | ||
f49ff000 | 1482 | /* See arch/tdesc.h. */ |
f5dff777 DJ |
1483 | |
1484 | void | |
54157a25 | 1485 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
f5dff777 DJ |
1486 | { |
1487 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1488 | gdb_assert (size > 0); |
f5dff777 DJ |
1489 | type->u.u.size = size; |
1490 | } | |
1491 | ||
f49ff000 YQ |
1492 | /* See arch/tdesc.h. */ |
1493 | ||
ad068eab UW |
1494 | struct tdesc_type * |
1495 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1496 | { | |
72ddacb7 | 1497 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_UNION); |
ad068eab | 1498 | |
53c934e9 | 1499 | feature->types.emplace_back (type); |
ad068eab UW |
1500 | return type; |
1501 | } | |
1502 | ||
f49ff000 YQ |
1503 | /* See arch/tdesc.h. */ |
1504 | ||
f5dff777 DJ |
1505 | struct tdesc_type * |
1506 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
54157a25 | 1507 | int size) |
f5dff777 | 1508 | { |
72ddacb7 | 1509 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_FLAGS); |
f5dff777 | 1510 | |
54157a25 DE |
1511 | gdb_assert (size > 0); |
1512 | ||
81516450 | 1513 | type->u.u.size = size; |
f5dff777 | 1514 | |
53c934e9 | 1515 | feature->types.emplace_back (type); |
f5dff777 DJ |
1516 | return type; |
1517 | } | |
1518 | ||
81516450 DE |
1519 | struct tdesc_type * |
1520 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
1521 | int size) | |
1522 | { | |
72ddacb7 | 1523 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_ENUM); |
81516450 DE |
1524 | |
1525 | gdb_assert (size > 0); | |
1526 | ||
81516450 DE |
1527 | type->u.u.size = size; |
1528 | ||
53c934e9 | 1529 | feature->types.emplace_back (type); |
81516450 DE |
1530 | return type; |
1531 | } | |
1532 | ||
f49ff000 | 1533 | /* See arch/tdesc.h. */ |
f5dff777 | 1534 | |
ad068eab UW |
1535 | void |
1536 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1537 | struct tdesc_type *field_type) | |
1538 | { | |
f5dff777 DJ |
1539 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1540 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab | 1541 | |
d05200d1 | 1542 | /* Initialize start and end so we know this is not a bit-field |
81516450 | 1543 | when we print-c-tdesc. */ |
d05200d1 | 1544 | type->u.u.fields->emplace_back (field_name, field_type, -1, -1); |
ad068eab UW |
1545 | } |
1546 | ||
f5dff777 | 1547 | void |
81516450 DE |
1548 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
1549 | int start, int end, struct tdesc_type *field_type) | |
f5dff777 | 1550 | { |
81516450 DE |
1551 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1552 | || type->kind == TDESC_TYPE_FLAGS); | |
1553 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 | 1554 | |
d05200d1 | 1555 | type->u.u.fields->emplace_back (field_name, field_type, start, end); |
f5dff777 DJ |
1556 | } |
1557 | ||
f49ff000 | 1558 | /* See arch/tdesc.h. */ |
81516450 DE |
1559 | |
1560 | void | |
1561 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, | |
1562 | int start, int end) | |
1563 | { | |
1564 | struct tdesc_type *field_type; | |
1565 | ||
1566 | gdb_assert (start >= 0 && end >= start); | |
1567 | ||
1568 | if (type->u.u.size > 4) | |
1569 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
1570 | else | |
1571 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1572 | ||
1573 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1574 | } | |
1575 | ||
f49ff000 | 1576 | /* See arch/tdesc.h. */ |
81516450 | 1577 | |
f5dff777 DJ |
1578 | void |
1579 | tdesc_add_flag (struct tdesc_type *type, int start, | |
1580 | const char *flag_name) | |
1581 | { | |
81516450 DE |
1582 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1583 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 | 1584 | |
d05200d1 SM |
1585 | type->u.u.fields->emplace_back (flag_name, |
1586 | tdesc_predefined_type (TDESC_TYPE_BOOL), | |
1587 | start, start); | |
81516450 DE |
1588 | } |
1589 | ||
1590 | void | |
1591 | tdesc_add_enum_value (struct tdesc_type *type, int value, | |
1592 | const char *name) | |
1593 | { | |
81516450 DE |
1594 | gdb_assert (type->kind == TDESC_TYPE_ENUM); |
1595 | ||
d05200d1 SM |
1596 | type->u.u.fields->emplace_back (name, |
1597 | tdesc_predefined_type (TDESC_TYPE_INT32), | |
1598 | value, -1); | |
f5dff777 DJ |
1599 | } |
1600 | ||
f49ff000 YQ |
1601 | /* See arch/tdesc.h. */ |
1602 | ||
123dc839 | 1603 | struct tdesc_feature * |
0abe8a89 YQ |
1604 | tdesc_create_feature (struct target_desc *tdesc, const char *name, |
1605 | const char *xml) | |
123dc839 | 1606 | { |
72ddacb7 | 1607 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 | 1608 | |
3eea796c SM |
1609 | tdesc->features.emplace_back (new_feature); |
1610 | ||
123dc839 DJ |
1611 | return new_feature; |
1612 | } | |
1613 | ||
424163ea DJ |
1614 | struct target_desc * |
1615 | allocate_target_description (void) | |
1616 | { | |
b468ff4c | 1617 | return new target_desc (); |
424163ea | 1618 | } |
29709017 | 1619 | |
23181151 DJ |
1620 | static void |
1621 | free_target_description (void *arg) | |
1622 | { | |
19ba03f4 | 1623 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1624 | |
b468ff4c | 1625 | delete target_desc; |
23181151 DJ |
1626 | } |
1627 | ||
1628 | struct cleanup * | |
1629 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1630 | { | |
1631 | return make_cleanup (free_target_description, target_desc); | |
1632 | } | |
1633 | ||
e35359c5 UW |
1634 | void |
1635 | tdesc_add_compatible (struct target_desc *target_desc, | |
1636 | const struct bfd_arch_info *compatible) | |
1637 | { | |
e35359c5 UW |
1638 | /* If this instance of GDB is compiled without BFD support for the |
1639 | compatible architecture, simply ignore it -- we would not be able | |
1640 | to handle it anyway. */ | |
1641 | if (compatible == NULL) | |
1642 | return; | |
1643 | ||
40e2a983 | 1644 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
1645 | if (compat == compatible) |
1646 | internal_error (__FILE__, __LINE__, | |
1647 | _("Attempted to add duplicate " | |
1648 | "compatible architecture \"%s\""), | |
1649 | compatible->printable_name); | |
1650 | ||
40e2a983 | 1651 | target_desc->compatible.push_back (compatible); |
e35359c5 UW |
1652 | } |
1653 | ||
29709017 DJ |
1654 | void |
1655 | set_tdesc_property (struct target_desc *target_desc, | |
1656 | const char *key, const char *value) | |
1657 | { | |
29709017 DJ |
1658 | gdb_assert (key != NULL && value != NULL); |
1659 | ||
129c10bc SM |
1660 | if (tdesc_property (target_desc, key) != NULL) |
1661 | internal_error (__FILE__, __LINE__, | |
1662 | _("Attempted to add duplicate property \"%s\""), key); | |
29709017 | 1663 | |
129c10bc | 1664 | target_desc->properties.emplace_back (key, value); |
29709017 | 1665 | } |
23181151 | 1666 | |
5f035c07 YQ |
1667 | /* See arch/tdesc.h. */ |
1668 | ||
1669 | void | |
1670 | set_tdesc_architecture (struct target_desc *target_desc, | |
1671 | const char *name) | |
1672 | { | |
1673 | set_tdesc_architecture (target_desc, bfd_scan_arch (name)); | |
1674 | } | |
1675 | ||
23181151 DJ |
1676 | void |
1677 | set_tdesc_architecture (struct target_desc *target_desc, | |
1678 | const struct bfd_arch_info *arch) | |
1679 | { | |
1680 | target_desc->arch = arch; | |
1681 | } | |
08d16641 | 1682 | |
5f035c07 YQ |
1683 | /* See arch/tdesc.h. */ |
1684 | ||
1685 | void | |
1686 | set_tdesc_osabi (struct target_desc *target_desc, const char *name) | |
1687 | { | |
1688 | set_tdesc_osabi (target_desc, osabi_from_tdesc_string (name)); | |
1689 | } | |
1690 | ||
08d16641 PA |
1691 | void |
1692 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1693 | { | |
1694 | target_desc->osabi = osabi; | |
1695 | } | |
23181151 DJ |
1696 | \f |
1697 | ||
1698 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1699 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1700 | ||
1701 | /* Helper functions for the CLI commands. */ | |
1702 | ||
1703 | static void | |
981a3fb3 | 1704 | set_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1705 | { |
635c7e8a | 1706 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1707 | } |
1708 | ||
1709 | static void | |
981a3fb3 | 1710 | show_tdesc_cmd (const char *args, int from_tty) |
23181151 DJ |
1711 | { |
1712 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1713 | } | |
1714 | ||
1715 | static void | |
981a3fb3 | 1716 | unset_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1717 | { |
635c7e8a | 1718 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1719 | } |
1720 | ||
1721 | static void | |
eb4c3f4a | 1722 | set_tdesc_filename_cmd (const char *args, int from_tty, |
23181151 DJ |
1723 | struct cmd_list_element *c) |
1724 | { | |
6ecd4729 PA |
1725 | xfree (target_description_filename); |
1726 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1727 | ||
23181151 DJ |
1728 | target_clear_description (); |
1729 | target_find_description (); | |
1730 | } | |
1731 | ||
1732 | static void | |
1733 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1734 | struct cmd_list_element *c, | |
1735 | const char *value) | |
1736 | { | |
6ecd4729 PA |
1737 | value = target_description_filename; |
1738 | ||
23181151 | 1739 | if (value != NULL && *value != '\0') |
3e43a32a | 1740 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1741 | value); |
1742 | else | |
3e43a32a MS |
1743 | printf_filtered (_("The target description will be " |
1744 | "read from the target.\n")); | |
23181151 DJ |
1745 | } |
1746 | ||
1747 | static void | |
e100df1a | 1748 | unset_tdesc_filename_cmd (const char *args, int from_tty) |
23181151 DJ |
1749 | { |
1750 | xfree (target_description_filename); | |
1751 | target_description_filename = NULL; | |
1752 | target_clear_description (); | |
1753 | target_find_description (); | |
1754 | } | |
1755 | ||
6eb1e6a8 YQ |
1756 | /* Print target description in C. */ |
1757 | ||
1758 | class print_c_tdesc : public tdesc_element_visitor | |
1759 | { | |
1760 | public: | |
1761 | print_c_tdesc (std::string &filename_after_features) | |
1762 | : m_filename_after_features (filename_after_features) | |
1763 | { | |
1764 | const char *inp; | |
1765 | char *outp; | |
1766 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1767 | ||
1768 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1769 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1770 | if (*inp == '.') | |
1771 | break; | |
1772 | else if (*inp == '-') | |
1773 | *outp++ = '_'; | |
1774 | else | |
1775 | *outp++ = *inp; | |
1776 | *outp = '\0'; | |
1777 | ||
1778 | /* Standard boilerplate. */ | |
1779 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1780 | "-*- buffer-read-only: t -*- vi" | |
1781 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1782 | } |
1783 | ||
1784 | ~print_c_tdesc () | |
1785 | { | |
1786 | xfree (m_function); | |
1787 | } | |
1788 | ||
1789 | void visit_pre (const target_desc *e) override | |
1790 | { | |
25aa13e5 YQ |
1791 | printf_unfiltered (" Original: %s */\n\n", |
1792 | lbasename (m_filename_after_features.c_str ())); | |
1793 | ||
6eb1e6a8 YQ |
1794 | printf_unfiltered ("#include \"defs.h\"\n"); |
1795 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1796 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1797 | printf_unfiltered ("\n"); | |
1798 | ||
1799 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1800 | printf_unfiltered ("static void\n"); | |
1801 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1802 | printf_unfiltered ("{\n"); | |
1803 | printf_unfiltered | |
1804 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1805 | ||
1806 | if (tdesc_architecture (e) != NULL) | |
1807 | { | |
1808 | printf_unfiltered | |
1809 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1810 | tdesc_architecture (e)->printable_name); | |
1811 | printf_unfiltered ("\n"); | |
1812 | } | |
1813 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1814 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1815 | { | |
1816 | printf_unfiltered | |
1817 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1818 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1819 | printf_unfiltered ("\n"); | |
1820 | } | |
1821 | ||
40e2a983 SM |
1822 | for (const struct bfd_arch_info *compatible : e->compatible) |
1823 | printf_unfiltered | |
1824 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1825 | compatible->printable_name); | |
6eb1e6a8 | 1826 | |
40e2a983 | 1827 | if (!e->compatible.empty ()) |
6eb1e6a8 YQ |
1828 | printf_unfiltered ("\n"); |
1829 | ||
129c10bc SM |
1830 | for (const property &prop : e->properties) |
1831 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1832 | prop.key.c_str (), prop.value.c_str ()); | |
1833 | ||
6eb1e6a8 YQ |
1834 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
1835 | } | |
1836 | ||
25aa13e5 | 1837 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1838 | { |
1839 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
f65ff9f9 | 1840 | e->name.c_str ()); |
6eb1e6a8 YQ |
1841 | } |
1842 | ||
25aa13e5 YQ |
1843 | void visit_post (const tdesc_feature *e) override |
1844 | {} | |
1845 | ||
6eb1e6a8 YQ |
1846 | void visit_post (const target_desc *e) override |
1847 | { | |
1848 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1849 | printf_unfiltered ("}\n"); | |
1850 | } | |
1851 | ||
1852 | void visit (const tdesc_type *type) override | |
1853 | { | |
6eb1e6a8 YQ |
1854 | /* Now we do some "filtering" in order to know which variables to |
1855 | declare. This is needed because otherwise we would declare unused | |
1856 | variables `field_type' and `type'. */ | |
1857 | if (!m_printed_field_type) | |
1858 | { | |
1859 | printf_unfiltered (" struct tdesc_type *field_type;\n"); | |
1860 | m_printed_field_type = true; | |
1861 | } | |
1862 | ||
1863 | if ((type->kind == TDESC_TYPE_UNION | |
1864 | || type->kind == TDESC_TYPE_STRUCT | |
1865 | || type->kind == TDESC_TYPE_FLAGS | |
1866 | || type->kind == TDESC_TYPE_ENUM) | |
d05200d1 | 1867 | && !type->u.u.fields->empty () |
6eb1e6a8 YQ |
1868 | && !m_printed_type) |
1869 | { | |
1870 | printf_unfiltered (" struct tdesc_type *type;\n"); | |
1871 | m_printed_type = true; | |
1872 | } | |
1873 | ||
1874 | switch (type->kind) | |
1875 | { | |
1876 | case TDESC_TYPE_VECTOR: | |
1877 | printf_unfiltered | |
1878 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
082b9140 | 1879 | type->u.v.type->name.c_str ()); |
6eb1e6a8 YQ |
1880 | printf_unfiltered |
1881 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", | |
082b9140 | 1882 | type->name.c_str (), type->u.v.count); |
6eb1e6a8 YQ |
1883 | break; |
1884 | case TDESC_TYPE_STRUCT: | |
1885 | case TDESC_TYPE_FLAGS: | |
1886 | if (type->kind == TDESC_TYPE_STRUCT) | |
1887 | { | |
1888 | printf_unfiltered | |
1889 | (" type = tdesc_create_struct (feature, \"%s\");\n", | |
082b9140 | 1890 | type->name.c_str ()); |
6eb1e6a8 YQ |
1891 | if (type->u.u.size != 0) |
1892 | printf_unfiltered | |
1893 | (" tdesc_set_struct_size (type, %d);\n", | |
1894 | type->u.u.size); | |
1895 | } | |
1896 | else | |
1897 | { | |
1898 | printf_unfiltered | |
1899 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", | |
082b9140 | 1900 | type->name.c_str (), type->u.u.size); |
6eb1e6a8 | 1901 | } |
d05200d1 | 1902 | for (const tdesc_type_field &f : *type->u.u.fields) |
6eb1e6a8 YQ |
1903 | { |
1904 | const char *type_name; | |
1905 | ||
d05200d1 SM |
1906 | gdb_assert (f.type != NULL); |
1907 | type_name = f.type->name.c_str (); | |
6eb1e6a8 YQ |
1908 | |
1909 | /* To minimize changes to generated files, don't emit type | |
1910 | info for fields that have defaulted types. */ | |
d05200d1 | 1911 | if (f.start != -1) |
6eb1e6a8 | 1912 | { |
d05200d1 SM |
1913 | gdb_assert (f.end != -1); |
1914 | if (f.type->kind == TDESC_TYPE_BOOL) | |
6eb1e6a8 | 1915 | { |
d05200d1 | 1916 | gdb_assert (f.start == f.end); |
6eb1e6a8 YQ |
1917 | printf_unfiltered |
1918 | (" tdesc_add_flag (type, %d, \"%s\");\n", | |
d05200d1 | 1919 | f.start, f.name.c_str ()); |
6eb1e6a8 YQ |
1920 | } |
1921 | else if ((type->u.u.size == 4 | |
d05200d1 | 1922 | && f.type->kind == TDESC_TYPE_UINT32) |
6eb1e6a8 | 1923 | || (type->u.u.size == 8 |
d05200d1 | 1924 | && f.type->kind == TDESC_TYPE_UINT64)) |
6eb1e6a8 YQ |
1925 | { |
1926 | printf_unfiltered | |
1927 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", | |
d05200d1 | 1928 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1929 | } |
1930 | else | |
1931 | { | |
1932 | printf_unfiltered | |
1933 | (" field_type = tdesc_named_type (feature," | |
1934 | " \"%s\");\n", | |
1935 | type_name); | |
1936 | printf_unfiltered | |
1937 | (" tdesc_add_typed_bitfield (type, \"%s\"," | |
1938 | " %d, %d, field_type);\n", | |
d05200d1 | 1939 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1940 | } |
1941 | } | |
1942 | else /* Not a bitfield. */ | |
1943 | { | |
d05200d1 | 1944 | gdb_assert (f.end == -1); |
6eb1e6a8 YQ |
1945 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); |
1946 | printf_unfiltered | |
1947 | (" field_type = tdesc_named_type (feature," | |
1948 | " \"%s\");\n", | |
1949 | type_name); | |
1950 | printf_unfiltered | |
1951 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
d05200d1 | 1952 | f.name.c_str ()); |
6eb1e6a8 YQ |
1953 | } |
1954 | } | |
1955 | break; | |
1956 | case TDESC_TYPE_UNION: | |
1957 | printf_unfiltered | |
1958 | (" type = tdesc_create_union (feature, \"%s\");\n", | |
082b9140 | 1959 | type->name.c_str ()); |
d05200d1 | 1960 | for (const tdesc_type_field &f : *type->u.u.fields) |
6eb1e6a8 YQ |
1961 | { |
1962 | printf_unfiltered | |
1963 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
d05200d1 | 1964 | f.type->name.c_str ()); |
6eb1e6a8 YQ |
1965 | printf_unfiltered |
1966 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
d05200d1 | 1967 | f.name.c_str ()); |
6eb1e6a8 YQ |
1968 | } |
1969 | break; | |
1970 | case TDESC_TYPE_ENUM: | |
1971 | printf_unfiltered | |
1972 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", | |
082b9140 | 1973 | type->name.c_str (), type->u.u.size); |
d05200d1 | 1974 | for (const tdesc_type_field &f : *type->u.u.fields) |
6eb1e6a8 YQ |
1975 | printf_unfiltered |
1976 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", | |
d05200d1 | 1977 | f.start, f.name.c_str ()); |
6eb1e6a8 YQ |
1978 | break; |
1979 | default: | |
082b9140 | 1980 | error (_("C output is not supported type \"%s\"."), type->name.c_str ()); |
6eb1e6a8 YQ |
1981 | } |
1982 | printf_unfiltered ("\n"); | |
1983 | } | |
1984 | ||
1985 | void visit (const tdesc_reg *reg) override | |
1986 | { | |
1987 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
a8142ee1 SM |
1988 | reg->name.c_str (), reg->target_regnum, |
1989 | reg->save_restore); | |
1990 | if (!reg->group.empty ()) | |
1991 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
6eb1e6a8 YQ |
1992 | else |
1993 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 1994 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
6eb1e6a8 YQ |
1995 | } |
1996 | ||
25aa13e5 YQ |
1997 | protected: |
1998 | std::string m_filename_after_features; | |
1999 | ||
6eb1e6a8 YQ |
2000 | private: |
2001 | char *m_function; | |
6eb1e6a8 YQ |
2002 | bool m_printed_field_type = false; |
2003 | bool m_printed_type = false; | |
2004 | }; | |
2005 | ||
25aa13e5 YQ |
2006 | /* Print target description feature in C. */ |
2007 | ||
2008 | class print_c_feature : public print_c_tdesc | |
2009 | { | |
2010 | public: | |
2011 | print_c_feature (std::string &file) | |
2012 | : print_c_tdesc (file) | |
2013 | { | |
2014 | /* Trim ".tmp". */ | |
2015 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
2016 | ||
2017 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
2018 | } | |
2019 | ||
2020 | void visit_pre (const target_desc *e) override | |
2021 | { | |
2022 | printf_unfiltered (" Original: %s */\n\n", | |
2023 | lbasename (m_filename_after_features.c_str ())); | |
2024 | ||
f49ff000 | 2025 | printf_unfiltered ("#include \"arch/tdesc.h\"\n"); |
25aa13e5 YQ |
2026 | printf_unfiltered ("\n"); |
2027 | } | |
2028 | ||
2029 | void visit_post (const target_desc *e) override | |
2030 | {} | |
2031 | ||
2032 | void visit_pre (const tdesc_feature *e) override | |
2033 | { | |
2034 | std::string name (m_filename_after_features); | |
2035 | ||
2036 | auto pos = name.find_first_of ('.'); | |
2037 | ||
2038 | name = name.substr (0, pos); | |
2039 | std::replace (name.begin (), name.end (), '/', '_'); | |
2040 | std::replace (name.begin (), name.end (), '-', '_'); | |
2041 | ||
2042 | printf_unfiltered ("static int\n"); | |
2043 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
2044 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
2045 | ||
2046 | printf_unfiltered ("{\n"); | |
2047 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
0abe8a89 YQ |
2048 | |
2049 | printf_unfiltered | |
2050 | ("\n feature = tdesc_create_feature (result, \"%s\", \"%s\");\n", | |
f65ff9f9 | 2051 | e->name.c_str (), lbasename (m_filename_after_features.c_str ())); |
25aa13e5 YQ |
2052 | } |
2053 | ||
2054 | void visit_post (const tdesc_feature *e) override | |
2055 | { | |
2056 | printf_unfiltered (" return regnum;\n"); | |
2057 | printf_unfiltered ("}\n"); | |
2058 | } | |
2059 | ||
2060 | void visit (const tdesc_reg *reg) override | |
2061 | { | |
ea03d0d3 YQ |
2062 | /* Most "reg" in XML target descriptions don't have "regnum" |
2063 | attribute, so the register number is allocated sequentially. | |
2064 | In case that reg has "regnum" attribute, register number | |
2065 | should be set by that explicitly. */ | |
2066 | ||
2067 | if (reg->target_regnum < m_next_regnum) | |
2068 | { | |
2069 | /* The integrity check, it can catch some errors on register | |
2070 | number collision, like this, | |
2071 | ||
2072 | <reg name="x0" bitsize="32"/> | |
2073 | <reg name="x1" bitsize="32"/> | |
2074 | <reg name="x2" bitsize="32"/> | |
2075 | <reg name="x3" bitsize="32"/> | |
2076 | <reg name="ps" bitsize="32" regnum="3"/> | |
2077 | ||
2078 | but it also has false negatives. The target description | |
2079 | below is correct, | |
2080 | ||
2081 | <reg name="x1" bitsize="32" regnum="1"/> | |
2082 | <reg name="x3" bitsize="32" regnum="3"/> | |
2083 | <reg name="x2" bitsize="32" regnum="2"/> | |
2084 | <reg name="x4" bitsize="32" regnum="4"/> | |
2085 | ||
2086 | but it is not a good practice, so still error on this, | |
2087 | and also print the message so that it can be saved in the | |
2088 | generated c file. */ | |
2089 | ||
2090 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
2091 | reg->target_regnum); | |
2092 | printf_unfiltered ("is not the largest number (%d).\n", | |
2093 | m_next_regnum); | |
2094 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
2095 | reg->target_regnum, m_next_regnum); | |
2096 | } | |
2097 | ||
2098 | if (reg->target_regnum > m_next_regnum) | |
2099 | { | |
2100 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
2101 | m_next_regnum = reg->target_regnum; | |
2102 | } | |
2103 | ||
25aa13e5 | 2104 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
a8142ee1 SM |
2105 | reg->name.c_str (), reg->save_restore); |
2106 | if (!reg->group.empty ()) | |
2107 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
25aa13e5 YQ |
2108 | else |
2109 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 2110 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
ea03d0d3 YQ |
2111 | |
2112 | m_next_regnum++; | |
25aa13e5 YQ |
2113 | } |
2114 | ||
ea03d0d3 YQ |
2115 | private: |
2116 | /* The register number to use for the next register we see. */ | |
2117 | int m_next_regnum = 0; | |
25aa13e5 YQ |
2118 | }; |
2119 | ||
81adfced | 2120 | static void |
e100df1a | 2121 | maint_print_c_tdesc_cmd (const char *args, int from_tty) |
81adfced DJ |
2122 | { |
2123 | const struct target_desc *tdesc; | |
6eb1e6a8 | 2124 | const char *filename; |
81adfced | 2125 | |
8e2141c6 YQ |
2126 | if (args == NULL) |
2127 | { | |
2128 | /* Use the global target-supplied description, not the current | |
2129 | architecture's. This lets a GDB for one architecture generate C | |
2130 | for another architecture's description, even though the gdbarch | |
2131 | initialization code will reject the new description. */ | |
2132 | tdesc = current_target_desc; | |
2133 | filename = target_description_filename; | |
2134 | } | |
2135 | else | |
2136 | { | |
2137 | /* Use the target description from the XML file. */ | |
2138 | filename = args; | |
2139 | tdesc = file_read_description_xml (filename); | |
2140 | } | |
2141 | ||
81adfced DJ |
2142 | if (tdesc == NULL) |
2143 | error (_("There is no target description to print.")); | |
2144 | ||
8e2141c6 | 2145 | if (filename == NULL) |
81adfced DJ |
2146 | error (_("The current target description did not come from an XML file.")); |
2147 | ||
6eb1e6a8 YQ |
2148 | std::string filename_after_features (filename); |
2149 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 2150 | |
6eb1e6a8 YQ |
2151 | if (loc != std::string::npos) |
2152 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 2153 | |
25aa13e5 YQ |
2154 | /* Print c files for target features instead of target descriptions, |
2155 | because c files got from target features are more flexible than the | |
2156 | counterparts. */ | |
6c73f67f YQ |
2157 | if (startswith (filename_after_features.c_str (), "i386/32bit-") |
2158 | || startswith (filename_after_features.c_str (), "i386/64bit-") | |
506fe5f4 | 2159 | || startswith (filename_after_features.c_str (), "i386/x32-core.xml") |
49bdb7ee AH |
2160 | || startswith (filename_after_features.c_str (), "tic6x-") |
2161 | || startswith (filename_after_features.c_str (), "aarch64")) | |
25aa13e5 YQ |
2162 | { |
2163 | print_c_feature v (filename_after_features); | |
81adfced | 2164 | |
25aa13e5 YQ |
2165 | tdesc->accept (v); |
2166 | } | |
2167 | else | |
2168 | { | |
2169 | print_c_tdesc v (filename_after_features); | |
2170 | ||
2171 | tdesc->accept (v); | |
2172 | } | |
81adfced DJ |
2173 | } |
2174 | ||
27d41eac YQ |
2175 | namespace selftests { |
2176 | ||
2177 | static std::vector<std::pair<const char*, const target_desc *>> xml_tdesc; | |
2178 | ||
2179 | #if GDB_SELF_TEST | |
2180 | ||
2181 | /* See target-descritpions.h. */ | |
2182 | ||
2183 | void | |
2184 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
2185 | { | |
2186 | xml_tdesc.emplace_back (xml_file, tdesc); | |
2187 | } | |
2188 | #endif | |
2189 | ||
2190 | } | |
2191 | ||
2192 | /* Check that the target descriptions created dynamically by | |
2193 | architecture-specific code equal the descriptions created from XML files | |
2194 | found in the specified directory DIR. */ | |
2195 | ||
2196 | static void | |
e100df1a | 2197 | maintenance_check_xml_descriptions (const char *dir, int from_tty) |
27d41eac YQ |
2198 | { |
2199 | if (dir == NULL) | |
2200 | error (_("Missing dir name")); | |
2201 | ||
2202 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
2203 | std::string feature_dir (dir1.get ()); | |
2204 | unsigned int failed = 0; | |
2205 | ||
2206 | for (auto const &e : selftests::xml_tdesc) | |
2207 | { | |
2208 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.first); | |
2209 | const target_desc *tdesc | |
2210 | = file_read_description_xml (tdesc_xml.data ()); | |
2211 | ||
2212 | if (tdesc == NULL || *tdesc != *e.second) | |
2213 | failed++; | |
2214 | } | |
2215 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
2216 | (long) selftests::xml_tdesc.size (), failed); | |
2217 | } | |
2218 | ||
23181151 DJ |
2219 | void |
2220 | _initialize_target_descriptions (void) | |
2221 | { | |
123dc839 DJ |
2222 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
2223 | ||
23181151 DJ |
2224 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
2225 | Set target description specific variables."), | |
2226 | &tdesc_set_cmdlist, "set tdesc ", | |
2227 | 0 /* allow-unknown */, &setlist); | |
2228 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
2229 | Show target description specific variables."), | |
2230 | &tdesc_show_cmdlist, "show tdesc ", | |
2231 | 0 /* allow-unknown */, &showlist); | |
2232 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2233 | Unset target description specific variables."), | |
2234 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2235 | 0 /* allow-unknown */, &unsetlist); | |
2236 | ||
2237 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2238 | &tdesc_filename_cmd_string, |
23181151 DJ |
2239 | _("\ |
2240 | Set the file to read for an XML target description"), _("\ | |
2241 | Show the file to read for an XML target description"), _("\ | |
2242 | When set, GDB will read the target description from a local\n\ | |
2243 | file instead of querying the remote target."), | |
2244 | set_tdesc_filename_cmd, | |
2245 | show_tdesc_filename_cmd, | |
2246 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2247 | ||
2248 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2249 | Unset the file to read for an XML target description. When unset,\n\ | |
2250 | GDB will read the description from the target."), | |
2251 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2252 | |
2253 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2254 | Print the current target description as a C source file."), | |
2255 | &maintenanceprintlist); | |
27d41eac YQ |
2256 | |
2257 | cmd_list_element *cmd; | |
2258 | ||
2259 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
2260 | maintenance_check_xml_descriptions, _("\ | |
2261 | Check the target descriptions created in GDB equal the descriptions\n\ | |
2262 | created from XML files in the directory.\n\ | |
2263 | The parameter is the directory name."), | |
2264 | &maintenancechecklist); | |
2265 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 2266 | } |