Commit | Line | Data |
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424163ea DJ |
1 | /* Target description support for GDB. |
2 | ||
61baf725 | 3 | Copyright (C) 2006-2017 Free Software Foundation, Inc. |
424163ea DJ |
4 | |
5 | Contributed by CodeSourcery. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
424163ea DJ |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
424163ea DJ |
21 | |
22 | #include "defs.h" | |
23 | #include "arch-utils.h" | |
23181151 | 24 | #include "gdbcmd.h" |
123dc839 DJ |
25 | #include "gdbtypes.h" |
26 | #include "reggroups.h" | |
424163ea DJ |
27 | #include "target.h" |
28 | #include "target-descriptions.h" | |
29709017 | 29 | #include "vec.h" |
123dc839 | 30 | #include "xml-support.h" |
23181151 | 31 | #include "xml-tdesc.h" |
c3f08eb7 | 32 | #include "osabi.h" |
424163ea | 33 | |
123dc839 DJ |
34 | #include "gdb_obstack.h" |
35 | #include "hashtab.h" | |
6ecd4729 | 36 | #include "inferior.h" |
25aa13e5 | 37 | #include <algorithm> |
27d41eac YQ |
38 | #include "completer.h" |
39 | #include "readline/tilde.h" /* tilde_expand */ | |
424163ea | 40 | |
6eb1e6a8 YQ |
41 | /* The interface to visit different elements of target description. */ |
42 | ||
43 | class tdesc_element_visitor | |
44 | { | |
45 | public: | |
46 | virtual void visit_pre (const target_desc *e) = 0; | |
47 | virtual void visit_post (const target_desc *e) = 0; | |
48 | ||
25aa13e5 YQ |
49 | virtual void visit_pre (const tdesc_feature *e) = 0; |
50 | virtual void visit_post (const tdesc_feature *e) = 0; | |
51 | ||
6eb1e6a8 YQ |
52 | virtual void visit (const tdesc_type *e) = 0; |
53 | virtual void visit (const tdesc_reg *e) = 0; | |
54 | }; | |
55 | ||
56 | class tdesc_element | |
57 | { | |
58 | public: | |
59 | virtual void accept (tdesc_element_visitor &v) const = 0; | |
60 | }; | |
61 | ||
424163ea DJ |
62 | /* Types. */ |
63 | ||
129c10bc | 64 | struct property |
29709017 | 65 | { |
129c10bc SM |
66 | property (const std::string &key_, const std::string &value_) |
67 | : key (key_), value (value_) | |
68 | {} | |
69 | ||
70 | std::string key; | |
71 | std::string value; | |
72 | }; | |
29709017 | 73 | |
123dc839 DJ |
74 | /* An individual register from a target description. */ |
75 | ||
c9c895b9 | 76 | struct tdesc_reg : tdesc_element |
123dc839 | 77 | { |
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 | ||
f0cddbef | 427 | struct tdesc_arch_reg |
ad068eab | 428 | { |
f0cddbef SM |
429 | tdesc_arch_reg (tdesc_reg *reg_, struct type *type_) |
430 | : reg (reg_), type (type_) | |
431 | {} | |
432 | ||
ad068eab UW |
433 | struct tdesc_reg *reg; |
434 | struct type *type; | |
f0cddbef | 435 | }; |
ad068eab | 436 | |
123dc839 DJ |
437 | struct tdesc_arch_data |
438 | { | |
ad068eab | 439 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
440 | During initialization of the gdbarch this list is used to store |
441 | registers which the architecture assigns a fixed register number. | |
442 | Registers which are NULL in this array, or off the end, are | |
443 | treated as zero-sized and nameless (i.e. placeholders in the | |
444 | numbering). */ | |
f0cddbef | 445 | std::vector<tdesc_arch_reg> arch_regs; |
123dc839 DJ |
446 | |
447 | /* Functions which report the register name, type, and reggroups for | |
448 | pseudo-registers. */ | |
f0cddbef SM |
449 | gdbarch_register_name_ftype *pseudo_register_name = NULL; |
450 | gdbarch_register_type_ftype *pseudo_register_type = NULL; | |
451 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p = NULL; | |
424163ea DJ |
452 | }; |
453 | ||
6ecd4729 PA |
454 | /* Info about an inferior's target description. There's one of these |
455 | for each inferior. */ | |
424163ea | 456 | |
6ecd4729 PA |
457 | struct target_desc_info |
458 | { | |
459 | /* A flag indicating that a description has already been fetched | |
460 | from the target, so it should not be queried again. */ | |
461 | ||
462 | int fetched; | |
424163ea | 463 | |
6ecd4729 PA |
464 | /* The description fetched from the target, or NULL if the target |
465 | did not supply any description. Only valid when | |
466 | target_desc_fetched is set. Only the description initialization | |
467 | code should access this; normally, the description should be | |
468 | accessed through the gdbarch object. */ | |
424163ea | 469 | |
6ecd4729 | 470 | const struct target_desc *tdesc; |
424163ea | 471 | |
6ecd4729 PA |
472 | /* The filename to read a target description from, as set by "set |
473 | tdesc filename ..." */ | |
424163ea | 474 | |
6ecd4729 PA |
475 | char *filename; |
476 | }; | |
23181151 | 477 | |
6ecd4729 PA |
478 | /* Get the inferior INF's target description info, allocating one on |
479 | the stop if necessary. */ | |
23181151 | 480 | |
6ecd4729 PA |
481 | static struct target_desc_info * |
482 | get_tdesc_info (struct inferior *inf) | |
483 | { | |
484 | if (inf->tdesc_info == NULL) | |
485 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
486 | return inf->tdesc_info; | |
487 | } | |
23181151 | 488 | |
123dc839 DJ |
489 | /* A handle for architecture-specific data associated with the |
490 | target description (see struct tdesc_arch_data). */ | |
491 | ||
492 | static struct gdbarch_data *tdesc_data; | |
493 | ||
6ecd4729 PA |
494 | /* See target-descriptions.h. */ |
495 | ||
496 | int | |
497 | target_desc_info_from_user_p (struct target_desc_info *info) | |
498 | { | |
499 | return info != NULL && info->filename != NULL; | |
500 | } | |
501 | ||
502 | /* See target-descriptions.h. */ | |
503 | ||
504 | void | |
505 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
506 | { | |
507 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
508 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
509 | ||
510 | dest->fetched = src->fetched; | |
511 | dest->tdesc = src->tdesc; | |
512 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
513 | } | |
514 | ||
515 | /* See target-descriptions.h. */ | |
516 | ||
517 | void | |
518 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
519 | { | |
520 | if (tdesc_info != NULL) | |
521 | { | |
522 | xfree (tdesc_info->filename); | |
523 | xfree (tdesc_info); | |
524 | } | |
525 | } | |
526 | ||
527 | /* Convenience helper macros. */ | |
528 | ||
529 | #define target_desc_fetched \ | |
530 | get_tdesc_info (current_inferior ())->fetched | |
531 | #define current_target_desc \ | |
532 | get_tdesc_info (current_inferior ())->tdesc | |
533 | #define target_description_filename \ | |
534 | get_tdesc_info (current_inferior ())->filename | |
535 | ||
536 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
537 | ||
538 | static char *tdesc_filename_cmd_string; | |
539 | ||
424163ea DJ |
540 | /* Fetch the current target's description, and switch the current |
541 | architecture to one which incorporates that description. */ | |
542 | ||
543 | void | |
544 | target_find_description (void) | |
545 | { | |
546 | /* If we've already fetched a description from the target, don't do | |
547 | it again. This allows a target to fetch the description early, | |
548 | during its to_open or to_create_inferior, if it needs extra | |
549 | information about the target to initialize. */ | |
550 | if (target_desc_fetched) | |
551 | return; | |
552 | ||
553 | /* The current architecture should not have any target description | |
554 | specified. It should have been cleared, e.g. when we | |
555 | disconnected from the previous target. */ | |
f5656ead | 556 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 557 | |
23181151 DJ |
558 | /* First try to fetch an XML description from the user-specified |
559 | file. */ | |
560 | current_target_desc = NULL; | |
561 | if (target_description_filename != NULL | |
562 | && *target_description_filename != '\0') | |
563 | current_target_desc | |
564 | = file_read_description_xml (target_description_filename); | |
565 | ||
566 | /* Next try to read the description from the current target using | |
567 | target objects. */ | |
568 | if (current_target_desc == NULL) | |
569 | current_target_desc = target_read_description_xml (¤t_target); | |
570 | ||
571 | /* If that failed try a target-specific hook. */ | |
572 | if (current_target_desc == NULL) | |
573 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
574 | |
575 | /* If a non-NULL description was returned, then update the current | |
576 | architecture. */ | |
577 | if (current_target_desc) | |
578 | { | |
579 | struct gdbarch_info info; | |
580 | ||
581 | gdbarch_info_init (&info); | |
582 | info.target_desc = current_target_desc; | |
583 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
584 | warning (_("Architecture rejected target-supplied description")); |
585 | else | |
586 | { | |
587 | struct tdesc_arch_data *data; | |
588 | ||
19ba03f4 SM |
589 | data = ((struct tdesc_arch_data *) |
590 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 591 | if (tdesc_has_registers (current_target_desc) |
f0cddbef | 592 | && data->arch_regs.empty ()) |
123dc839 DJ |
593 | warning (_("Target-supplied registers are not supported " |
594 | "by the current architecture")); | |
595 | } | |
424163ea DJ |
596 | } |
597 | ||
598 | /* Now that we know this description is usable, record that we | |
599 | fetched it. */ | |
600 | target_desc_fetched = 1; | |
601 | } | |
602 | ||
603 | /* Discard any description fetched from the current target, and switch | |
604 | the current architecture to one with no target description. */ | |
605 | ||
606 | void | |
607 | target_clear_description (void) | |
608 | { | |
609 | struct gdbarch_info info; | |
610 | ||
611 | if (!target_desc_fetched) | |
612 | return; | |
613 | ||
614 | target_desc_fetched = 0; | |
615 | current_target_desc = NULL; | |
616 | ||
617 | gdbarch_info_init (&info); | |
618 | if (!gdbarch_update_p (info)) | |
619 | internal_error (__FILE__, __LINE__, | |
620 | _("Could not remove target-supplied description")); | |
621 | } | |
622 | ||
623 | /* Return the global current target description. This should only be | |
624 | used by gdbarch initialization code; most access should be through | |
625 | an existing gdbarch. */ | |
626 | ||
627 | const struct target_desc * | |
628 | target_current_description (void) | |
629 | { | |
630 | if (target_desc_fetched) | |
631 | return current_target_desc; | |
632 | ||
633 | return NULL; | |
634 | } | |
e35359c5 UW |
635 | |
636 | /* Return non-zero if this target description is compatible | |
637 | with the given BFD architecture. */ | |
638 | ||
639 | int | |
640 | tdesc_compatible_p (const struct target_desc *target_desc, | |
641 | const struct bfd_arch_info *arch) | |
642 | { | |
40e2a983 | 643 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
644 | { |
645 | if (compat == arch | |
646 | || arch->compatible (arch, compat) | |
647 | || compat->compatible (compat, arch)) | |
648 | return 1; | |
649 | } | |
650 | ||
651 | return 0; | |
652 | } | |
23181151 DJ |
653 | \f |
654 | ||
123dc839 | 655 | /* Direct accessors for target descriptions. */ |
424163ea | 656 | |
29709017 DJ |
657 | /* Return the string value of a property named KEY, or NULL if the |
658 | property was not specified. */ | |
659 | ||
660 | const char * | |
661 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
662 | { | |
129c10bc SM |
663 | for (const property &prop : target_desc->properties) |
664 | if (prop.key == key) | |
665 | return prop.value.c_str (); | |
29709017 DJ |
666 | |
667 | return NULL; | |
668 | } | |
669 | ||
23181151 DJ |
670 | /* Return the BFD architecture associated with this target |
671 | description, or NULL if no architecture was specified. */ | |
672 | ||
673 | const struct bfd_arch_info * | |
674 | tdesc_architecture (const struct target_desc *target_desc) | |
675 | { | |
676 | return target_desc->arch; | |
677 | } | |
08d16641 PA |
678 | |
679 | /* Return the OSABI associated with this target description, or | |
680 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
681 | ||
682 | enum gdb_osabi | |
683 | tdesc_osabi (const struct target_desc *target_desc) | |
684 | { | |
685 | return target_desc->osabi; | |
686 | } | |
687 | ||
23181151 DJ |
688 | \f |
689 | ||
123dc839 DJ |
690 | /* Return 1 if this target description includes any registers. */ |
691 | ||
692 | int | |
693 | tdesc_has_registers (const struct target_desc *target_desc) | |
694 | { | |
123dc839 DJ |
695 | if (target_desc == NULL) |
696 | return 0; | |
697 | ||
3eea796c | 698 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 699 | if (!feature->registers.empty ()) |
123dc839 DJ |
700 | return 1; |
701 | ||
702 | return 0; | |
703 | } | |
704 | ||
705 | /* Return the feature with the given name, if present, or NULL if | |
706 | the named feature is not found. */ | |
707 | ||
708 | const struct tdesc_feature * | |
709 | tdesc_find_feature (const struct target_desc *target_desc, | |
710 | const char *name) | |
711 | { | |
3eea796c | 712 | for (const tdesc_feature_up &feature : target_desc->features) |
f65ff9f9 | 713 | if (feature->name == name) |
3eea796c | 714 | return feature.get (); |
123dc839 DJ |
715 | |
716 | return NULL; | |
717 | } | |
718 | ||
719 | /* Return the name of FEATURE. */ | |
720 | ||
721 | const char * | |
722 | tdesc_feature_name (const struct tdesc_feature *feature) | |
723 | { | |
f65ff9f9 | 724 | return feature->name.c_str (); |
123dc839 DJ |
725 | } |
726 | ||
ad068eab UW |
727 | /* Predefined types. */ |
728 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 729 | { |
81516450 | 730 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
731 | { "int8", TDESC_TYPE_INT8 }, |
732 | { "int16", TDESC_TYPE_INT16 }, | |
733 | { "int32", TDESC_TYPE_INT32 }, | |
734 | { "int64", TDESC_TYPE_INT64 }, | |
735 | { "int128", TDESC_TYPE_INT128 }, | |
736 | { "uint8", TDESC_TYPE_UINT8 }, | |
737 | { "uint16", TDESC_TYPE_UINT16 }, | |
738 | { "uint32", TDESC_TYPE_UINT32 }, | |
739 | { "uint64", TDESC_TYPE_UINT64 }, | |
740 | { "uint128", TDESC_TYPE_UINT128 }, | |
741 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
742 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
743 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
744 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 745 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 746 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 747 | }; |
81adfced | 748 | |
81516450 DE |
749 | /* Lookup a predefined type. */ |
750 | ||
751 | static struct tdesc_type * | |
752 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
753 | { | |
798a7429 | 754 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
81516450 DE |
755 | if (tdesc_predefined_types[ix].kind == kind) |
756 | return &tdesc_predefined_types[ix]; | |
757 | ||
758 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
759 | } | |
760 | ||
f49ff000 | 761 | /* See arch/tdesc.h. */ |
123dc839 | 762 | |
ad068eab | 763 | struct tdesc_type * |
123dc839 DJ |
764 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
765 | { | |
123dc839 | 766 | /* First try target-defined types. */ |
53c934e9 | 767 | for (const tdesc_type_up &type : feature->types) |
082b9140 | 768 | if (type->name == id) |
53c934e9 | 769 | return type.get (); |
123dc839 | 770 | |
81adfced | 771 | /* Next try the predefined types. */ |
53c934e9 | 772 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
082b9140 | 773 | if (tdesc_predefined_types[ix].name == id) |
ad068eab | 774 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
775 | |
776 | return NULL; | |
777 | } | |
ad068eab | 778 | |
9fd3625f L |
779 | /* Lookup type associated with ID. */ |
780 | ||
781 | struct type * | |
782 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
783 | { | |
f0cddbef SM |
784 | tdesc_arch_data *data |
785 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
9fd3625f | 786 | |
f0cddbef | 787 | for (const tdesc_arch_reg ® : data->arch_regs) |
9fd3625f | 788 | { |
f0cddbef SM |
789 | if (reg.reg |
790 | && reg.reg->tdesc_type | |
791 | && reg.type | |
792 | && reg.reg->tdesc_type->name == id) | |
793 | return reg.type; | |
9fd3625f L |
794 | } |
795 | ||
796 | return NULL; | |
797 | } | |
798 | ||
ad068eab UW |
799 | /* Construct, if necessary, and return the GDB type implementing target |
800 | type TDESC_TYPE for architecture GDBARCH. */ | |
801 | ||
802 | static struct type * | |
803 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
804 | { | |
9fd3625f L |
805 | struct type *type; |
806 | ||
ad068eab UW |
807 | switch (tdesc_type->kind) |
808 | { | |
809 | /* Predefined types. */ | |
81516450 DE |
810 | case TDESC_TYPE_BOOL: |
811 | return builtin_type (gdbarch)->builtin_bool; | |
812 | ||
ad068eab | 813 | case TDESC_TYPE_INT8: |
df4df182 | 814 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
815 | |
816 | case TDESC_TYPE_INT16: | |
df4df182 | 817 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
818 | |
819 | case TDESC_TYPE_INT32: | |
df4df182 | 820 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
821 | |
822 | case TDESC_TYPE_INT64: | |
df4df182 | 823 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
824 | |
825 | case TDESC_TYPE_INT128: | |
df4df182 | 826 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
827 | |
828 | case TDESC_TYPE_UINT8: | |
df4df182 | 829 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
830 | |
831 | case TDESC_TYPE_UINT16: | |
df4df182 | 832 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
833 | |
834 | case TDESC_TYPE_UINT32: | |
df4df182 | 835 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
836 | |
837 | case TDESC_TYPE_UINT64: | |
df4df182 | 838 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
839 | |
840 | case TDESC_TYPE_UINT128: | |
df4df182 | 841 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
842 | |
843 | case TDESC_TYPE_CODE_PTR: | |
844 | return builtin_type (gdbarch)->builtin_func_ptr; | |
845 | ||
846 | case TDESC_TYPE_DATA_PTR: | |
847 | return builtin_type (gdbarch)->builtin_data_ptr; | |
848 | ||
9fd3625f L |
849 | default: |
850 | break; | |
851 | } | |
852 | ||
082b9140 | 853 | type = tdesc_find_type (gdbarch, tdesc_type->name.c_str ()); |
9fd3625f L |
854 | if (type) |
855 | return type; | |
856 | ||
857 | switch (tdesc_type->kind) | |
858 | { | |
ad068eab | 859 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 860 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 861 | floatformats_ieee_single); |
ad068eab UW |
862 | |
863 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 864 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 865 | floatformats_ieee_double); |
ad068eab UW |
866 | |
867 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 868 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 869 | floatformats_arm_ext); |
ad068eab | 870 | |
9fd3625f L |
871 | case TDESC_TYPE_I387_EXT: |
872 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
873 | floatformats_i387_ext); | |
874 | ||
ad068eab UW |
875 | /* Types defined by a target feature. */ |
876 | case TDESC_TYPE_VECTOR: | |
877 | { | |
878 | struct type *type, *field_type; | |
879 | ||
880 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
881 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
082b9140 | 882 | TYPE_NAME (type) = xstrdup (tdesc_type->name.c_str ()); |
ad068eab UW |
883 | |
884 | return type; | |
885 | } | |
886 | ||
f5dff777 DJ |
887 | case TDESC_TYPE_STRUCT: |
888 | { | |
889 | struct type *type, *field_type; | |
f5dff777 DJ |
890 | |
891 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); | |
082b9140 | 892 | TYPE_NAME (type) = xstrdup (tdesc_type->name.c_str ()); |
f5dff777 DJ |
893 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
894 | ||
d05200d1 | 895 | for (const tdesc_type_field &f : *tdesc_type->u.u.fields) |
f5dff777 | 896 | { |
d05200d1 | 897 | if (f.start != -1 && f.end != -1) |
f5dff777 DJ |
898 | { |
899 | /* Bitfield. */ | |
900 | struct field *fld; | |
901 | struct type *field_type; | |
902 | int bitsize, total_size; | |
903 | ||
81516450 | 904 | /* This invariant should be preserved while creating types. */ |
f5dff777 | 905 | gdb_assert (tdesc_type->u.u.size != 0); |
d05200d1 SM |
906 | if (f.type != NULL) |
907 | field_type = tdesc_gdb_type (gdbarch, f.type); | |
81516450 | 908 | else if (tdesc_type->u.u.size > 4) |
f5dff777 DJ |
909 | field_type = builtin_type (gdbarch)->builtin_uint64; |
910 | else | |
911 | field_type = builtin_type (gdbarch)->builtin_uint32; | |
912 | ||
d05200d1 SM |
913 | fld = append_composite_type_field_raw |
914 | (type, xstrdup (f.name.c_str ()), field_type); | |
f5dff777 DJ |
915 | |
916 | /* For little-endian, BITPOS counts from the LSB of | |
917 | the structure and marks the LSB of the field. For | |
918 | big-endian, BITPOS counts from the MSB of the | |
919 | structure and marks the MSB of the field. Either | |
920 | way, it is the number of bits to the "left" of the | |
921 | field. To calculate this in big-endian, we need | |
922 | the total size of the structure. */ | |
d05200d1 | 923 | bitsize = f.end - f.start + 1; |
f5dff777 DJ |
924 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; |
925 | if (gdbarch_bits_big_endian (gdbarch)) | |
d05200d1 | 926 | SET_FIELD_BITPOS (fld[0], total_size - f.start - bitsize); |
f5dff777 | 927 | else |
d05200d1 | 928 | SET_FIELD_BITPOS (fld[0], f.start); |
f5dff777 DJ |
929 | FIELD_BITSIZE (fld[0]) = bitsize; |
930 | } | |
931 | else | |
932 | { | |
d05200d1 SM |
933 | gdb_assert (f.start == -1 && f.end == -1); |
934 | field_type = tdesc_gdb_type (gdbarch, f.type); | |
935 | append_composite_type_field (type, xstrdup (f.name.c_str ()), | |
f5dff777 DJ |
936 | field_type); |
937 | } | |
938 | } | |
939 | ||
940 | if (tdesc_type->u.u.size != 0) | |
941 | TYPE_LENGTH (type) = tdesc_type->u.u.size; | |
942 | return type; | |
943 | } | |
944 | ||
ad068eab UW |
945 | case TDESC_TYPE_UNION: |
946 | { | |
947 | struct type *type, *field_type; | |
ad068eab | 948 | |
e9bb382b | 949 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
082b9140 | 950 | TYPE_NAME (type) = xstrdup (tdesc_type->name.c_str ()); |
ad068eab | 951 | |
d05200d1 | 952 | for (const tdesc_type_field &f : *tdesc_type->u.u.fields) |
ad068eab | 953 | { |
d05200d1 SM |
954 | field_type = tdesc_gdb_type (gdbarch, f.type); |
955 | append_composite_type_field (type, xstrdup (f.name.c_str ()), | |
956 | field_type); | |
ad068eab | 957 | |
f5dff777 | 958 | /* If any of the children of a union are vectors, flag the |
ad068eab UW |
959 | union as a vector also. This allows e.g. a union of two |
960 | vector types to show up automatically in "info vector". */ | |
961 | if (TYPE_VECTOR (field_type)) | |
962 | TYPE_VECTOR (type) = 1; | |
963 | } | |
f5dff777 DJ |
964 | return type; |
965 | } | |
966 | ||
967 | case TDESC_TYPE_FLAGS: | |
968 | { | |
082b9140 | 969 | type = arch_flags_type (gdbarch, tdesc_type->name.c_str (), |
77b7c781 | 970 | tdesc_type->u.u.size * TARGET_CHAR_BIT); |
d05200d1 | 971 | for (const tdesc_type_field &f : *tdesc_type->u.u.fields) |
81516450 DE |
972 | { |
973 | struct type *field_type; | |
d05200d1 | 974 | int bitsize = f.end - f.start + 1; |
81516450 | 975 | |
d05200d1 SM |
976 | gdb_assert (f.type != NULL); |
977 | field_type = tdesc_gdb_type (gdbarch, f.type); | |
978 | append_flags_type_field (type, f.start, bitsize, | |
979 | field_type, f.name.c_str ()); | |
81516450 DE |
980 | } |
981 | ||
982 | return type; | |
983 | } | |
984 | ||
985 | case TDESC_TYPE_ENUM: | |
986 | { | |
81516450 | 987 | type = arch_type (gdbarch, TYPE_CODE_ENUM, |
77b7c781 | 988 | tdesc_type->u.u.size * TARGET_CHAR_BIT, |
082b9140 | 989 | tdesc_type->name.c_str ()); |
81516450 | 990 | TYPE_UNSIGNED (type) = 1; |
d05200d1 | 991 | for (const tdesc_type_field &f : *tdesc_type->u.u.fields) |
81516450 DE |
992 | { |
993 | struct field *fld | |
d05200d1 SM |
994 | = append_composite_type_field_raw (type, |
995 | xstrdup (f.name.c_str ()), | |
81516450 DE |
996 | NULL); |
997 | ||
d05200d1 | 998 | SET_FIELD_BITPOS (fld[0], f.start); |
81516450 | 999 | } |
ad068eab UW |
1000 | |
1001 | return type; | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | internal_error (__FILE__, __LINE__, | |
1006 | "Type \"%s\" has an unknown kind %d", | |
082b9140 | 1007 | tdesc_type->name.c_str (), tdesc_type->kind); |
ad068eab | 1008 | } |
123dc839 DJ |
1009 | \f |
1010 | ||
1011 | /* Support for registers from target descriptions. */ | |
1012 | ||
1013 | /* Construct the per-gdbarch data. */ | |
1014 | ||
1015 | static void * | |
1016 | tdesc_data_init (struct obstack *obstack) | |
1017 | { | |
1018 | struct tdesc_arch_data *data; | |
1019 | ||
1020 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
f0cddbef SM |
1021 | new (data) tdesc_arch_data (); |
1022 | ||
123dc839 DJ |
1023 | return data; |
1024 | } | |
1025 | ||
1026 | /* Similar, but for the temporary copy used during architecture | |
1027 | initialization. */ | |
1028 | ||
1029 | struct tdesc_arch_data * | |
1030 | tdesc_data_alloc (void) | |
1031 | { | |
f0cddbef | 1032 | return new tdesc_arch_data (); |
123dc839 DJ |
1033 | } |
1034 | ||
1035 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
1036 | to be used (for instance if it was unsuitable for the | |
1037 | architecture). */ | |
1038 | ||
1039 | void | |
1040 | tdesc_data_cleanup (void *data_untyped) | |
1041 | { | |
19ba03f4 | 1042 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 1043 | |
f0cddbef | 1044 | delete data; |
123dc839 DJ |
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 | { | |
1067 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1068 | ||
1069 | if (reg == NULL) | |
1070 | return 0; | |
1071 | ||
1072 | /* Make sure the vector includes a REGNO'th element. */ | |
f0cddbef SM |
1073 | while (regno >= data->arch_regs.size ()) |
1074 | data->arch_regs.emplace_back (nullptr, nullptr); | |
1075 | ||
1076 | data->arch_regs[regno] = tdesc_arch_reg (reg, NULL); | |
ad068eab | 1077 | |
7cc46491 | 1078 | return 1; |
123dc839 DJ |
1079 | } |
1080 | ||
58d6951d DJ |
1081 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
1082 | register number to it. */ | |
1083 | ||
1084 | int | |
1085 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
1086 | const char *name) | |
1087 | { | |
1088 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1089 | ||
1090 | if (reg == NULL) | |
1091 | return 0; | |
1092 | ||
1093 | return 1; | |
1094 | } | |
1095 | ||
7cc46491 DJ |
1096 | /* Search FEATURE for a register whose name is in NAMES and assign |
1097 | REGNO to it. */ | |
123dc839 DJ |
1098 | |
1099 | int | |
1100 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
1101 | struct tdesc_arch_data *data, | |
1102 | int regno, const char *const names[]) | |
1103 | { | |
1104 | int i; | |
1105 | ||
1106 | for (i = 0; names[i] != NULL; i++) | |
1107 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
1108 | return 1; | |
1109 | ||
1110 | return 0; | |
1111 | } | |
1112 | ||
7cc46491 DJ |
1113 | /* Search FEATURE for a register named NAME, and return its size in |
1114 | bits. The register must exist. */ | |
1115 | ||
1116 | int | |
1117 | tdesc_register_size (const struct tdesc_feature *feature, | |
1118 | const char *name) | |
1119 | { | |
1120 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1121 | ||
1122 | gdb_assert (reg != NULL); | |
1123 | return reg->bitsize; | |
1124 | } | |
1125 | ||
123dc839 DJ |
1126 | /* Look up a register by its GDB internal register number. */ |
1127 | ||
ad068eab UW |
1128 | static struct tdesc_arch_reg * |
1129 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 1130 | { |
123dc839 DJ |
1131 | struct tdesc_arch_data *data; |
1132 | ||
19ba03f4 | 1133 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
f0cddbef SM |
1134 | if (regno < data->arch_regs.size ()) |
1135 | return &data->arch_regs[regno]; | |
123dc839 DJ |
1136 | else |
1137 | return NULL; | |
1138 | } | |
1139 | ||
ad068eab UW |
1140 | static struct tdesc_reg * |
1141 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
1142 | { | |
1143 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 1144 | |
ad068eab UW |
1145 | return reg? reg->reg : NULL; |
1146 | } | |
1147 | ||
f8b73d13 DJ |
1148 | /* Return the name of register REGNO, from the target description or |
1149 | from an architecture-provided pseudo_register_name method. */ | |
1150 | ||
1151 | const char * | |
d93859e2 | 1152 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 1153 | { |
d93859e2 UW |
1154 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1155 | int num_regs = gdbarch_num_regs (gdbarch); | |
1156 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
1157 | |
1158 | if (reg != NULL) | |
a8142ee1 | 1159 | return reg->name.c_str (); |
123dc839 DJ |
1160 | |
1161 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1162 | { | |
19ba03f4 SM |
1163 | struct tdesc_arch_data *data |
1164 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1165 | |
123dc839 | 1166 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 1167 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
1168 | } |
1169 | ||
1170 | return ""; | |
1171 | } | |
1172 | ||
58d6951d | 1173 | struct type * |
123dc839 DJ |
1174 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
1175 | { | |
ad068eab UW |
1176 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
1177 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1178 | int num_regs = gdbarch_num_regs (gdbarch); |
1179 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1180 | ||
1181 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1182 | { | |
19ba03f4 SM |
1183 | struct tdesc_arch_data *data |
1184 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1185 | |
123dc839 DJ |
1186 | gdb_assert (data->pseudo_register_type != NULL); |
1187 | return data->pseudo_register_type (gdbarch, regno); | |
1188 | } | |
1189 | ||
1190 | if (reg == NULL) | |
1191 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1192 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1193 | |
ad068eab | 1194 | if (arch_reg->type == NULL) |
123dc839 | 1195 | { |
ad068eab UW |
1196 | /* First check for a predefined or target defined type. */ |
1197 | if (reg->tdesc_type) | |
1198 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
1199 | ||
1200 | /* Next try size-sensitive type shortcuts. */ | |
a8142ee1 | 1201 | else if (reg->type == "float") |
ad068eab UW |
1202 | { |
1203 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1204 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1205 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1206 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1207 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1208 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1209 | else | |
1210 | { | |
1211 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 1212 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
1213 | arch_reg->type = builtin_type (gdbarch)->builtin_double; |
1214 | } | |
1215 | } | |
a8142ee1 | 1216 | else if (reg->type == "int") |
ad068eab UW |
1217 | { |
1218 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1219 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1220 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1221 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1222 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1223 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1224 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1225 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1226 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1227 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1228 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1229 | /* A bit desperate by this point... */ |
ad068eab UW |
1230 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1231 | else | |
1232 | { | |
1233 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 1234 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
1235 | arch_reg->type = builtin_type (gdbarch)->builtin_long; |
1236 | } | |
1237 | } | |
1238 | ||
1239 | if (arch_reg->type == NULL) | |
1240 | internal_error (__FILE__, __LINE__, | |
1241 | "Register \"%s\" has an unknown type \"%s\"", | |
a8142ee1 | 1242 | reg->name.c_str (), reg->type.c_str ()); |
123dc839 | 1243 | } |
123dc839 | 1244 | |
ad068eab | 1245 | return arch_reg->type; |
123dc839 DJ |
1246 | } |
1247 | ||
1248 | static int | |
1249 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1250 | { | |
1251 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1252 | ||
1253 | if (reg != NULL) | |
1254 | return reg->target_regnum; | |
1255 | else | |
1256 | return -1; | |
1257 | } | |
1258 | ||
1259 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
1260 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
1261 | Unlike a gdbarch register_reggroup_p method, this function will |
1262 | return -1 if it does not know; the caller should handle registers | |
1263 | with no specified group. | |
123dc839 DJ |
1264 | |
1265 | Arbitrary strings (other than "general", "float", and "vector") | |
1266 | from the description are not used; they cause the register to be | |
1267 | displayed in "info all-registers" but excluded from "info | |
1268 | registers" et al. The names of containing features are also not | |
1269 | used. This might be extended to display registers in some more | |
1270 | useful groupings. | |
1271 | ||
1272 | The save-restore flag is also implemented here. */ | |
1273 | ||
f8b73d13 DJ |
1274 | int |
1275 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1276 | struct reggroup *reggroup) | |
123dc839 | 1277 | { |
123dc839 DJ |
1278 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1279 | ||
a8142ee1 | 1280 | if (reg != NULL && !reg->group.empty ()) |
123dc839 DJ |
1281 | { |
1282 | int general_p = 0, float_p = 0, vector_p = 0; | |
1283 | ||
a8142ee1 | 1284 | if (reg->group == "general") |
123dc839 | 1285 | general_p = 1; |
a8142ee1 | 1286 | else if (reg->group == "float") |
123dc839 | 1287 | float_p = 1; |
a8142ee1 | 1288 | else if (reg->group == "vector") |
123dc839 DJ |
1289 | vector_p = 1; |
1290 | ||
1291 | if (reggroup == float_reggroup) | |
1292 | return float_p; | |
1293 | ||
1294 | if (reggroup == vector_reggroup) | |
1295 | return vector_p; | |
1296 | ||
1297 | if (reggroup == general_reggroup) | |
1298 | return general_p; | |
1299 | } | |
1300 | ||
1301 | if (reg != NULL | |
1302 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1303 | return reg->save_restore; | |
1304 | ||
f8b73d13 DJ |
1305 | return -1; |
1306 | } | |
1307 | ||
1308 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1309 | group specified go to the default reggroup function and are handled | |
1310 | by type. */ | |
1311 | ||
1312 | static int | |
1313 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1314 | struct reggroup *reggroup) | |
1315 | { | |
1316 | int num_regs = gdbarch_num_regs (gdbarch); | |
1317 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1318 | int ret; | |
1319 | ||
1320 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1321 | { | |
19ba03f4 SM |
1322 | struct tdesc_arch_data *data |
1323 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1324 | |
58d6951d DJ |
1325 | if (data->pseudo_register_reggroup_p != NULL) |
1326 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1327 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1328 | } |
1329 | ||
1330 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1331 | if (ret != -1) | |
1332 | return ret; | |
1333 | ||
123dc839 DJ |
1334 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1335 | } | |
1336 | ||
1337 | /* Record architecture-specific functions to call for pseudo-register | |
1338 | support. */ | |
1339 | ||
1340 | void | |
1341 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1342 | gdbarch_register_name_ftype *pseudo_name) | |
1343 | { | |
19ba03f4 SM |
1344 | struct tdesc_arch_data *data |
1345 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1346 | |
1347 | data->pseudo_register_name = pseudo_name; | |
1348 | } | |
1349 | ||
1350 | void | |
1351 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1352 | gdbarch_register_type_ftype *pseudo_type) | |
1353 | { | |
19ba03f4 SM |
1354 | struct tdesc_arch_data *data |
1355 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1356 | |
1357 | data->pseudo_register_type = pseudo_type; | |
1358 | } | |
1359 | ||
1360 | void | |
1361 | set_tdesc_pseudo_register_reggroup_p | |
1362 | (struct gdbarch *gdbarch, | |
1363 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1364 | { | |
19ba03f4 SM |
1365 | struct tdesc_arch_data *data |
1366 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1367 | |
1368 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1369 | } | |
1370 | ||
1371 | /* Update GDBARCH to use the target description for registers. */ | |
1372 | ||
1373 | void | |
1374 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1375 | const struct target_desc *target_desc, |
123dc839 DJ |
1376 | struct tdesc_arch_data *early_data) |
1377 | { | |
1378 | int num_regs = gdbarch_num_regs (gdbarch); | |
123dc839 DJ |
1379 | struct tdesc_arch_data *data; |
1380 | htab_t reg_hash; | |
1381 | ||
123dc839 DJ |
1382 | /* We can't use the description for registers if it doesn't describe |
1383 | any. This function should only be called after validating | |
1384 | registers, so the caller should know that registers are | |
1385 | included. */ | |
1386 | gdb_assert (tdesc_has_registers (target_desc)); | |
1387 | ||
19ba03f4 | 1388 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1389 | data->arch_regs = early_data->arch_regs; |
f0cddbef | 1390 | delete early_data; |
123dc839 DJ |
1391 | |
1392 | /* Build up a set of all registers, so that we can assign register | |
1393 | numbers where needed. The hash table expands as necessary, so | |
1394 | the initial size is arbitrary. */ | |
1395 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
3eea796c | 1396 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 1397 | for (const tdesc_reg_up ® : feature->registers) |
123dc839 | 1398 | { |
c9c895b9 | 1399 | void **slot = htab_find_slot (reg_hash, reg.get (), INSERT); |
123dc839 | 1400 | |
c9c895b9 | 1401 | *slot = reg.get (); |
123dc839 DJ |
1402 | } |
1403 | ||
1404 | /* Remove any registers which were assigned numbers by the | |
1405 | architecture. */ | |
f0cddbef SM |
1406 | for (const tdesc_arch_reg &arch_reg : data->arch_regs) |
1407 | if (arch_reg.reg != NULL) | |
1408 | htab_remove_elt (reg_hash, arch_reg.reg); | |
123dc839 DJ |
1409 | |
1410 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1411 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1412 | Iterate over the features, not the hash table, so that the order |
1413 | matches that in the target description. */ | |
1414 | ||
f0cddbef SM |
1415 | gdb_assert (data->arch_regs.size () <= num_regs); |
1416 | while (data->arch_regs.size () < num_regs) | |
1417 | data->arch_regs.emplace_back (nullptr, nullptr); | |
1418 | ||
3eea796c | 1419 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 SM |
1420 | for (const tdesc_reg_up ® : feature->registers) |
1421 | if (htab_find (reg_hash, reg.get ()) != NULL) | |
123dc839 | 1422 | { |
f0cddbef | 1423 | data->arch_regs.emplace_back (reg.get (), nullptr); |
123dc839 DJ |
1424 | num_regs++; |
1425 | } | |
1426 | ||
1427 | htab_delete (reg_hash); | |
1428 | ||
1429 | /* Update the architecture. */ | |
1430 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1431 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1432 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1433 | set_gdbarch_remote_register_number (gdbarch, | |
1434 | tdesc_remote_register_number); | |
1435 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1436 | } | |
1437 | \f | |
1438 | ||
f49ff000 YQ |
1439 | /* See arch/tdesc.h. */ |
1440 | ||
123dc839 DJ |
1441 | void |
1442 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1443 | int regnum, int save_restore, const char *group, | |
1444 | int bitsize, const char *type) | |
1445 | { | |
72ddacb7 YQ |
1446 | tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, |
1447 | group, bitsize, type); | |
123dc839 | 1448 | |
c9c895b9 | 1449 | feature->registers.emplace_back (reg); |
123dc839 DJ |
1450 | } |
1451 | ||
f49ff000 YQ |
1452 | /* See arch/tdesc.h. */ |
1453 | ||
ad068eab UW |
1454 | struct tdesc_type * |
1455 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1456 | struct tdesc_type *field_type, int count) | |
1457 | { | |
72ddacb7 | 1458 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_VECTOR); |
ad068eab | 1459 | |
ad068eab UW |
1460 | type->u.v.type = field_type; |
1461 | type->u.v.count = count; | |
1462 | ||
53c934e9 | 1463 | feature->types.emplace_back (type); |
ad068eab UW |
1464 | return type; |
1465 | } | |
1466 | ||
f49ff000 YQ |
1467 | /* See arch/tdesc.h. */ |
1468 | ||
f5dff777 DJ |
1469 | struct tdesc_type * |
1470 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
1471 | { | |
72ddacb7 | 1472 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_STRUCT); |
f5dff777 | 1473 | |
53c934e9 | 1474 | feature->types.emplace_back (type); |
f5dff777 DJ |
1475 | return type; |
1476 | } | |
1477 | ||
f49ff000 | 1478 | /* See arch/tdesc.h. */ |
f5dff777 DJ |
1479 | |
1480 | void | |
54157a25 | 1481 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
f5dff777 DJ |
1482 | { |
1483 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1484 | gdb_assert (size > 0); |
f5dff777 DJ |
1485 | type->u.u.size = size; |
1486 | } | |
1487 | ||
f49ff000 YQ |
1488 | /* See arch/tdesc.h. */ |
1489 | ||
ad068eab UW |
1490 | struct tdesc_type * |
1491 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1492 | { | |
72ddacb7 | 1493 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_UNION); |
ad068eab | 1494 | |
53c934e9 | 1495 | feature->types.emplace_back (type); |
ad068eab UW |
1496 | return type; |
1497 | } | |
1498 | ||
f49ff000 YQ |
1499 | /* See arch/tdesc.h. */ |
1500 | ||
f5dff777 DJ |
1501 | struct tdesc_type * |
1502 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
54157a25 | 1503 | int size) |
f5dff777 | 1504 | { |
72ddacb7 | 1505 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_FLAGS); |
f5dff777 | 1506 | |
54157a25 DE |
1507 | gdb_assert (size > 0); |
1508 | ||
81516450 | 1509 | type->u.u.size = size; |
f5dff777 | 1510 | |
53c934e9 | 1511 | feature->types.emplace_back (type); |
f5dff777 DJ |
1512 | return type; |
1513 | } | |
1514 | ||
81516450 DE |
1515 | struct tdesc_type * |
1516 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
1517 | int size) | |
1518 | { | |
72ddacb7 | 1519 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_ENUM); |
81516450 DE |
1520 | |
1521 | gdb_assert (size > 0); | |
1522 | ||
81516450 DE |
1523 | type->u.u.size = size; |
1524 | ||
53c934e9 | 1525 | feature->types.emplace_back (type); |
81516450 DE |
1526 | return type; |
1527 | } | |
1528 | ||
f49ff000 | 1529 | /* See arch/tdesc.h. */ |
f5dff777 | 1530 | |
ad068eab UW |
1531 | void |
1532 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1533 | struct tdesc_type *field_type) | |
1534 | { | |
f5dff777 DJ |
1535 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1536 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab | 1537 | |
d05200d1 | 1538 | /* Initialize start and end so we know this is not a bit-field |
81516450 | 1539 | when we print-c-tdesc. */ |
d05200d1 | 1540 | type->u.u.fields->emplace_back (field_name, field_type, -1, -1); |
ad068eab UW |
1541 | } |
1542 | ||
f5dff777 | 1543 | void |
81516450 DE |
1544 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
1545 | int start, int end, struct tdesc_type *field_type) | |
f5dff777 | 1546 | { |
81516450 DE |
1547 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1548 | || type->kind == TDESC_TYPE_FLAGS); | |
1549 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 | 1550 | |
d05200d1 | 1551 | type->u.u.fields->emplace_back (field_name, field_type, start, end); |
f5dff777 DJ |
1552 | } |
1553 | ||
f49ff000 | 1554 | /* See arch/tdesc.h. */ |
81516450 DE |
1555 | |
1556 | void | |
1557 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, | |
1558 | int start, int end) | |
1559 | { | |
1560 | struct tdesc_type *field_type; | |
1561 | ||
1562 | gdb_assert (start >= 0 && end >= start); | |
1563 | ||
1564 | if (type->u.u.size > 4) | |
1565 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
1566 | else | |
1567 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1568 | ||
1569 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1570 | } | |
1571 | ||
f49ff000 | 1572 | /* See arch/tdesc.h. */ |
81516450 | 1573 | |
f5dff777 DJ |
1574 | void |
1575 | tdesc_add_flag (struct tdesc_type *type, int start, | |
1576 | const char *flag_name) | |
1577 | { | |
81516450 DE |
1578 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1579 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 | 1580 | |
d05200d1 SM |
1581 | type->u.u.fields->emplace_back (flag_name, |
1582 | tdesc_predefined_type (TDESC_TYPE_BOOL), | |
1583 | start, start); | |
81516450 DE |
1584 | } |
1585 | ||
1586 | void | |
1587 | tdesc_add_enum_value (struct tdesc_type *type, int value, | |
1588 | const char *name) | |
1589 | { | |
81516450 DE |
1590 | gdb_assert (type->kind == TDESC_TYPE_ENUM); |
1591 | ||
d05200d1 SM |
1592 | type->u.u.fields->emplace_back (name, |
1593 | tdesc_predefined_type (TDESC_TYPE_INT32), | |
1594 | value, -1); | |
f5dff777 DJ |
1595 | } |
1596 | ||
f49ff000 YQ |
1597 | /* See arch/tdesc.h. */ |
1598 | ||
123dc839 | 1599 | struct tdesc_feature * |
0abe8a89 YQ |
1600 | tdesc_create_feature (struct target_desc *tdesc, const char *name, |
1601 | const char *xml) | |
123dc839 | 1602 | { |
72ddacb7 | 1603 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 | 1604 | |
3eea796c SM |
1605 | tdesc->features.emplace_back (new_feature); |
1606 | ||
123dc839 DJ |
1607 | return new_feature; |
1608 | } | |
1609 | ||
424163ea DJ |
1610 | struct target_desc * |
1611 | allocate_target_description (void) | |
1612 | { | |
b468ff4c | 1613 | return new target_desc (); |
424163ea | 1614 | } |
29709017 | 1615 | |
23181151 DJ |
1616 | static void |
1617 | free_target_description (void *arg) | |
1618 | { | |
19ba03f4 | 1619 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1620 | |
b468ff4c | 1621 | delete target_desc; |
23181151 DJ |
1622 | } |
1623 | ||
1624 | struct cleanup * | |
1625 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1626 | { | |
1627 | return make_cleanup (free_target_description, target_desc); | |
1628 | } | |
1629 | ||
e35359c5 UW |
1630 | void |
1631 | tdesc_add_compatible (struct target_desc *target_desc, | |
1632 | const struct bfd_arch_info *compatible) | |
1633 | { | |
e35359c5 UW |
1634 | /* If this instance of GDB is compiled without BFD support for the |
1635 | compatible architecture, simply ignore it -- we would not be able | |
1636 | to handle it anyway. */ | |
1637 | if (compatible == NULL) | |
1638 | return; | |
1639 | ||
40e2a983 | 1640 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
1641 | if (compat == compatible) |
1642 | internal_error (__FILE__, __LINE__, | |
1643 | _("Attempted to add duplicate " | |
1644 | "compatible architecture \"%s\""), | |
1645 | compatible->printable_name); | |
1646 | ||
40e2a983 | 1647 | target_desc->compatible.push_back (compatible); |
e35359c5 UW |
1648 | } |
1649 | ||
29709017 DJ |
1650 | void |
1651 | set_tdesc_property (struct target_desc *target_desc, | |
1652 | const char *key, const char *value) | |
1653 | { | |
29709017 DJ |
1654 | gdb_assert (key != NULL && value != NULL); |
1655 | ||
129c10bc SM |
1656 | if (tdesc_property (target_desc, key) != NULL) |
1657 | internal_error (__FILE__, __LINE__, | |
1658 | _("Attempted to add duplicate property \"%s\""), key); | |
29709017 | 1659 | |
129c10bc | 1660 | target_desc->properties.emplace_back (key, value); |
29709017 | 1661 | } |
23181151 | 1662 | |
5f035c07 YQ |
1663 | /* See arch/tdesc.h. */ |
1664 | ||
1665 | void | |
1666 | set_tdesc_architecture (struct target_desc *target_desc, | |
1667 | const char *name) | |
1668 | { | |
1669 | set_tdesc_architecture (target_desc, bfd_scan_arch (name)); | |
1670 | } | |
1671 | ||
23181151 DJ |
1672 | void |
1673 | set_tdesc_architecture (struct target_desc *target_desc, | |
1674 | const struct bfd_arch_info *arch) | |
1675 | { | |
1676 | target_desc->arch = arch; | |
1677 | } | |
08d16641 | 1678 | |
5f035c07 YQ |
1679 | /* See arch/tdesc.h. */ |
1680 | ||
1681 | void | |
1682 | set_tdesc_osabi (struct target_desc *target_desc, const char *name) | |
1683 | { | |
1684 | set_tdesc_osabi (target_desc, osabi_from_tdesc_string (name)); | |
1685 | } | |
1686 | ||
08d16641 PA |
1687 | void |
1688 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1689 | { | |
1690 | target_desc->osabi = osabi; | |
1691 | } | |
23181151 DJ |
1692 | \f |
1693 | ||
1694 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1695 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1696 | ||
1697 | /* Helper functions for the CLI commands. */ | |
1698 | ||
1699 | static void | |
981a3fb3 | 1700 | set_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1701 | { |
635c7e8a | 1702 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1703 | } |
1704 | ||
1705 | static void | |
981a3fb3 | 1706 | show_tdesc_cmd (const char *args, int from_tty) |
23181151 DJ |
1707 | { |
1708 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1709 | } | |
1710 | ||
1711 | static void | |
981a3fb3 | 1712 | unset_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1713 | { |
635c7e8a | 1714 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1715 | } |
1716 | ||
1717 | static void | |
eb4c3f4a | 1718 | set_tdesc_filename_cmd (const char *args, int from_tty, |
23181151 DJ |
1719 | struct cmd_list_element *c) |
1720 | { | |
6ecd4729 PA |
1721 | xfree (target_description_filename); |
1722 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1723 | ||
23181151 DJ |
1724 | target_clear_description (); |
1725 | target_find_description (); | |
1726 | } | |
1727 | ||
1728 | static void | |
1729 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1730 | struct cmd_list_element *c, | |
1731 | const char *value) | |
1732 | { | |
6ecd4729 PA |
1733 | value = target_description_filename; |
1734 | ||
23181151 | 1735 | if (value != NULL && *value != '\0') |
3e43a32a | 1736 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1737 | value); |
1738 | else | |
3e43a32a MS |
1739 | printf_filtered (_("The target description will be " |
1740 | "read from the target.\n")); | |
23181151 DJ |
1741 | } |
1742 | ||
1743 | static void | |
e100df1a | 1744 | unset_tdesc_filename_cmd (const char *args, int from_tty) |
23181151 DJ |
1745 | { |
1746 | xfree (target_description_filename); | |
1747 | target_description_filename = NULL; | |
1748 | target_clear_description (); | |
1749 | target_find_description (); | |
1750 | } | |
1751 | ||
6eb1e6a8 YQ |
1752 | /* Print target description in C. */ |
1753 | ||
1754 | class print_c_tdesc : public tdesc_element_visitor | |
1755 | { | |
1756 | public: | |
1757 | print_c_tdesc (std::string &filename_after_features) | |
1758 | : m_filename_after_features (filename_after_features) | |
1759 | { | |
1760 | const char *inp; | |
1761 | char *outp; | |
1762 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1763 | ||
1764 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1765 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1766 | if (*inp == '.') | |
1767 | break; | |
1768 | else if (*inp == '-') | |
1769 | *outp++ = '_'; | |
1770 | else | |
1771 | *outp++ = *inp; | |
1772 | *outp = '\0'; | |
1773 | ||
1774 | /* Standard boilerplate. */ | |
1775 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1776 | "-*- buffer-read-only: t -*- vi" | |
1777 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1778 | } |
1779 | ||
1780 | ~print_c_tdesc () | |
1781 | { | |
1782 | xfree (m_function); | |
1783 | } | |
1784 | ||
1785 | void visit_pre (const target_desc *e) override | |
1786 | { | |
25aa13e5 YQ |
1787 | printf_unfiltered (" Original: %s */\n\n", |
1788 | lbasename (m_filename_after_features.c_str ())); | |
1789 | ||
6eb1e6a8 YQ |
1790 | printf_unfiltered ("#include \"defs.h\"\n"); |
1791 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1792 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1793 | printf_unfiltered ("\n"); | |
1794 | ||
1795 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1796 | printf_unfiltered ("static void\n"); | |
1797 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1798 | printf_unfiltered ("{\n"); | |
1799 | printf_unfiltered | |
1800 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1801 | ||
1802 | if (tdesc_architecture (e) != NULL) | |
1803 | { | |
1804 | printf_unfiltered | |
1805 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1806 | tdesc_architecture (e)->printable_name); | |
1807 | printf_unfiltered ("\n"); | |
1808 | } | |
1809 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1810 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1811 | { | |
1812 | printf_unfiltered | |
1813 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1814 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1815 | printf_unfiltered ("\n"); | |
1816 | } | |
1817 | ||
40e2a983 SM |
1818 | for (const struct bfd_arch_info *compatible : e->compatible) |
1819 | printf_unfiltered | |
1820 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1821 | compatible->printable_name); | |
6eb1e6a8 | 1822 | |
40e2a983 | 1823 | if (!e->compatible.empty ()) |
6eb1e6a8 YQ |
1824 | printf_unfiltered ("\n"); |
1825 | ||
129c10bc SM |
1826 | for (const property &prop : e->properties) |
1827 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1828 | prop.key.c_str (), prop.value.c_str ()); | |
1829 | ||
6eb1e6a8 YQ |
1830 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
1831 | } | |
1832 | ||
25aa13e5 | 1833 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1834 | { |
1835 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
f65ff9f9 | 1836 | e->name.c_str ()); |
6eb1e6a8 YQ |
1837 | } |
1838 | ||
25aa13e5 YQ |
1839 | void visit_post (const tdesc_feature *e) override |
1840 | {} | |
1841 | ||
6eb1e6a8 YQ |
1842 | void visit_post (const target_desc *e) override |
1843 | { | |
1844 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1845 | printf_unfiltered ("}\n"); | |
1846 | } | |
1847 | ||
1848 | void visit (const tdesc_type *type) override | |
1849 | { | |
6eb1e6a8 YQ |
1850 | /* Now we do some "filtering" in order to know which variables to |
1851 | declare. This is needed because otherwise we would declare unused | |
1852 | variables `field_type' and `type'. */ | |
1853 | if (!m_printed_field_type) | |
1854 | { | |
1855 | printf_unfiltered (" struct tdesc_type *field_type;\n"); | |
1856 | m_printed_field_type = true; | |
1857 | } | |
1858 | ||
1859 | if ((type->kind == TDESC_TYPE_UNION | |
1860 | || type->kind == TDESC_TYPE_STRUCT | |
1861 | || type->kind == TDESC_TYPE_FLAGS | |
1862 | || type->kind == TDESC_TYPE_ENUM) | |
d05200d1 | 1863 | && !type->u.u.fields->empty () |
6eb1e6a8 YQ |
1864 | && !m_printed_type) |
1865 | { | |
1866 | printf_unfiltered (" struct tdesc_type *type;\n"); | |
1867 | m_printed_type = true; | |
1868 | } | |
1869 | ||
1870 | switch (type->kind) | |
1871 | { | |
1872 | case TDESC_TYPE_VECTOR: | |
1873 | printf_unfiltered | |
1874 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
082b9140 | 1875 | type->u.v.type->name.c_str ()); |
6eb1e6a8 YQ |
1876 | printf_unfiltered |
1877 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", | |
082b9140 | 1878 | type->name.c_str (), type->u.v.count); |
6eb1e6a8 YQ |
1879 | break; |
1880 | case TDESC_TYPE_STRUCT: | |
1881 | case TDESC_TYPE_FLAGS: | |
1882 | if (type->kind == TDESC_TYPE_STRUCT) | |
1883 | { | |
1884 | printf_unfiltered | |
1885 | (" type = tdesc_create_struct (feature, \"%s\");\n", | |
082b9140 | 1886 | type->name.c_str ()); |
6eb1e6a8 YQ |
1887 | if (type->u.u.size != 0) |
1888 | printf_unfiltered | |
1889 | (" tdesc_set_struct_size (type, %d);\n", | |
1890 | type->u.u.size); | |
1891 | } | |
1892 | else | |
1893 | { | |
1894 | printf_unfiltered | |
1895 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", | |
082b9140 | 1896 | type->name.c_str (), type->u.u.size); |
6eb1e6a8 | 1897 | } |
d05200d1 | 1898 | for (const tdesc_type_field &f : *type->u.u.fields) |
6eb1e6a8 YQ |
1899 | { |
1900 | const char *type_name; | |
1901 | ||
d05200d1 SM |
1902 | gdb_assert (f.type != NULL); |
1903 | type_name = f.type->name.c_str (); | |
6eb1e6a8 YQ |
1904 | |
1905 | /* To minimize changes to generated files, don't emit type | |
1906 | info for fields that have defaulted types. */ | |
d05200d1 | 1907 | if (f.start != -1) |
6eb1e6a8 | 1908 | { |
d05200d1 SM |
1909 | gdb_assert (f.end != -1); |
1910 | if (f.type->kind == TDESC_TYPE_BOOL) | |
6eb1e6a8 | 1911 | { |
d05200d1 | 1912 | gdb_assert (f.start == f.end); |
6eb1e6a8 YQ |
1913 | printf_unfiltered |
1914 | (" tdesc_add_flag (type, %d, \"%s\");\n", | |
d05200d1 | 1915 | f.start, f.name.c_str ()); |
6eb1e6a8 YQ |
1916 | } |
1917 | else if ((type->u.u.size == 4 | |
d05200d1 | 1918 | && f.type->kind == TDESC_TYPE_UINT32) |
6eb1e6a8 | 1919 | || (type->u.u.size == 8 |
d05200d1 | 1920 | && f.type->kind == TDESC_TYPE_UINT64)) |
6eb1e6a8 YQ |
1921 | { |
1922 | printf_unfiltered | |
1923 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", | |
d05200d1 | 1924 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1925 | } |
1926 | else | |
1927 | { | |
1928 | printf_unfiltered | |
1929 | (" field_type = tdesc_named_type (feature," | |
1930 | " \"%s\");\n", | |
1931 | type_name); | |
1932 | printf_unfiltered | |
1933 | (" tdesc_add_typed_bitfield (type, \"%s\"," | |
1934 | " %d, %d, field_type);\n", | |
d05200d1 | 1935 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1936 | } |
1937 | } | |
1938 | else /* Not a bitfield. */ | |
1939 | { | |
d05200d1 | 1940 | gdb_assert (f.end == -1); |
6eb1e6a8 YQ |
1941 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); |
1942 | printf_unfiltered | |
1943 | (" field_type = tdesc_named_type (feature," | |
1944 | " \"%s\");\n", | |
1945 | type_name); | |
1946 | printf_unfiltered | |
1947 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
d05200d1 | 1948 | f.name.c_str ()); |
6eb1e6a8 YQ |
1949 | } |
1950 | } | |
1951 | break; | |
1952 | case TDESC_TYPE_UNION: | |
1953 | printf_unfiltered | |
1954 | (" type = tdesc_create_union (feature, \"%s\");\n", | |
082b9140 | 1955 | type->name.c_str ()); |
d05200d1 | 1956 | for (const tdesc_type_field &f : *type->u.u.fields) |
6eb1e6a8 YQ |
1957 | { |
1958 | printf_unfiltered | |
1959 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
d05200d1 | 1960 | f.type->name.c_str ()); |
6eb1e6a8 YQ |
1961 | printf_unfiltered |
1962 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
d05200d1 | 1963 | f.name.c_str ()); |
6eb1e6a8 YQ |
1964 | } |
1965 | break; | |
1966 | case TDESC_TYPE_ENUM: | |
1967 | printf_unfiltered | |
1968 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", | |
082b9140 | 1969 | type->name.c_str (), type->u.u.size); |
d05200d1 | 1970 | for (const tdesc_type_field &f : *type->u.u.fields) |
6eb1e6a8 YQ |
1971 | printf_unfiltered |
1972 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", | |
d05200d1 | 1973 | f.start, f.name.c_str ()); |
6eb1e6a8 YQ |
1974 | break; |
1975 | default: | |
082b9140 | 1976 | error (_("C output is not supported type \"%s\"."), type->name.c_str ()); |
6eb1e6a8 YQ |
1977 | } |
1978 | printf_unfiltered ("\n"); | |
1979 | } | |
1980 | ||
1981 | void visit (const tdesc_reg *reg) override | |
1982 | { | |
1983 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
a8142ee1 SM |
1984 | reg->name.c_str (), reg->target_regnum, |
1985 | reg->save_restore); | |
1986 | if (!reg->group.empty ()) | |
1987 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
6eb1e6a8 YQ |
1988 | else |
1989 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 1990 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
6eb1e6a8 YQ |
1991 | } |
1992 | ||
25aa13e5 YQ |
1993 | protected: |
1994 | std::string m_filename_after_features; | |
1995 | ||
6eb1e6a8 YQ |
1996 | private: |
1997 | char *m_function; | |
6eb1e6a8 YQ |
1998 | bool m_printed_field_type = false; |
1999 | bool m_printed_type = false; | |
2000 | }; | |
2001 | ||
25aa13e5 YQ |
2002 | /* Print target description feature in C. */ |
2003 | ||
2004 | class print_c_feature : public print_c_tdesc | |
2005 | { | |
2006 | public: | |
2007 | print_c_feature (std::string &file) | |
2008 | : print_c_tdesc (file) | |
2009 | { | |
2010 | /* Trim ".tmp". */ | |
2011 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
2012 | ||
2013 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
2014 | } | |
2015 | ||
2016 | void visit_pre (const target_desc *e) override | |
2017 | { | |
2018 | printf_unfiltered (" Original: %s */\n\n", | |
2019 | lbasename (m_filename_after_features.c_str ())); | |
2020 | ||
f49ff000 | 2021 | printf_unfiltered ("#include \"arch/tdesc.h\"\n"); |
25aa13e5 YQ |
2022 | printf_unfiltered ("\n"); |
2023 | } | |
2024 | ||
2025 | void visit_post (const target_desc *e) override | |
2026 | {} | |
2027 | ||
2028 | void visit_pre (const tdesc_feature *e) override | |
2029 | { | |
2030 | std::string name (m_filename_after_features); | |
2031 | ||
2032 | auto pos = name.find_first_of ('.'); | |
2033 | ||
2034 | name = name.substr (0, pos); | |
2035 | std::replace (name.begin (), name.end (), '/', '_'); | |
2036 | std::replace (name.begin (), name.end (), '-', '_'); | |
2037 | ||
2038 | printf_unfiltered ("static int\n"); | |
2039 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
2040 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
2041 | ||
2042 | printf_unfiltered ("{\n"); | |
2043 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
0abe8a89 YQ |
2044 | |
2045 | printf_unfiltered | |
2046 | ("\n feature = tdesc_create_feature (result, \"%s\", \"%s\");\n", | |
f65ff9f9 | 2047 | e->name.c_str (), lbasename (m_filename_after_features.c_str ())); |
25aa13e5 YQ |
2048 | } |
2049 | ||
2050 | void visit_post (const tdesc_feature *e) override | |
2051 | { | |
2052 | printf_unfiltered (" return regnum;\n"); | |
2053 | printf_unfiltered ("}\n"); | |
2054 | } | |
2055 | ||
2056 | void visit (const tdesc_reg *reg) override | |
2057 | { | |
ea03d0d3 YQ |
2058 | /* Most "reg" in XML target descriptions don't have "regnum" |
2059 | attribute, so the register number is allocated sequentially. | |
2060 | In case that reg has "regnum" attribute, register number | |
2061 | should be set by that explicitly. */ | |
2062 | ||
2063 | if (reg->target_regnum < m_next_regnum) | |
2064 | { | |
2065 | /* The integrity check, it can catch some errors on register | |
2066 | number collision, like this, | |
2067 | ||
2068 | <reg name="x0" bitsize="32"/> | |
2069 | <reg name="x1" bitsize="32"/> | |
2070 | <reg name="x2" bitsize="32"/> | |
2071 | <reg name="x3" bitsize="32"/> | |
2072 | <reg name="ps" bitsize="32" regnum="3"/> | |
2073 | ||
2074 | but it also has false negatives. The target description | |
2075 | below is correct, | |
2076 | ||
2077 | <reg name="x1" bitsize="32" regnum="1"/> | |
2078 | <reg name="x3" bitsize="32" regnum="3"/> | |
2079 | <reg name="x2" bitsize="32" regnum="2"/> | |
2080 | <reg name="x4" bitsize="32" regnum="4"/> | |
2081 | ||
2082 | but it is not a good practice, so still error on this, | |
2083 | and also print the message so that it can be saved in the | |
2084 | generated c file. */ | |
2085 | ||
2086 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
2087 | reg->target_regnum); | |
2088 | printf_unfiltered ("is not the largest number (%d).\n", | |
2089 | m_next_regnum); | |
2090 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
2091 | reg->target_regnum, m_next_regnum); | |
2092 | } | |
2093 | ||
2094 | if (reg->target_regnum > m_next_regnum) | |
2095 | { | |
2096 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
2097 | m_next_regnum = reg->target_regnum; | |
2098 | } | |
2099 | ||
25aa13e5 | 2100 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
a8142ee1 SM |
2101 | reg->name.c_str (), reg->save_restore); |
2102 | if (!reg->group.empty ()) | |
2103 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
25aa13e5 YQ |
2104 | else |
2105 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 2106 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
ea03d0d3 YQ |
2107 | |
2108 | m_next_regnum++; | |
25aa13e5 YQ |
2109 | } |
2110 | ||
ea03d0d3 YQ |
2111 | private: |
2112 | /* The register number to use for the next register we see. */ | |
2113 | int m_next_regnum = 0; | |
25aa13e5 YQ |
2114 | }; |
2115 | ||
81adfced | 2116 | static void |
e100df1a | 2117 | maint_print_c_tdesc_cmd (const char *args, int from_tty) |
81adfced DJ |
2118 | { |
2119 | const struct target_desc *tdesc; | |
6eb1e6a8 | 2120 | const char *filename; |
81adfced | 2121 | |
8e2141c6 YQ |
2122 | if (args == NULL) |
2123 | { | |
2124 | /* Use the global target-supplied description, not the current | |
2125 | architecture's. This lets a GDB for one architecture generate C | |
2126 | for another architecture's description, even though the gdbarch | |
2127 | initialization code will reject the new description. */ | |
2128 | tdesc = current_target_desc; | |
2129 | filename = target_description_filename; | |
2130 | } | |
2131 | else | |
2132 | { | |
2133 | /* Use the target description from the XML file. */ | |
2134 | filename = args; | |
2135 | tdesc = file_read_description_xml (filename); | |
2136 | } | |
2137 | ||
81adfced DJ |
2138 | if (tdesc == NULL) |
2139 | error (_("There is no target description to print.")); | |
2140 | ||
8e2141c6 | 2141 | if (filename == NULL) |
81adfced DJ |
2142 | error (_("The current target description did not come from an XML file.")); |
2143 | ||
6eb1e6a8 YQ |
2144 | std::string filename_after_features (filename); |
2145 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 2146 | |
6eb1e6a8 YQ |
2147 | if (loc != std::string::npos) |
2148 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 2149 | |
25aa13e5 YQ |
2150 | /* Print c files for target features instead of target descriptions, |
2151 | because c files got from target features are more flexible than the | |
2152 | counterparts. */ | |
6c73f67f YQ |
2153 | if (startswith (filename_after_features.c_str (), "i386/32bit-") |
2154 | || startswith (filename_after_features.c_str (), "i386/64bit-") | |
506fe5f4 | 2155 | || startswith (filename_after_features.c_str (), "i386/x32-core.xml") |
49bdb7ee AH |
2156 | || startswith (filename_after_features.c_str (), "tic6x-") |
2157 | || startswith (filename_after_features.c_str (), "aarch64")) | |
25aa13e5 YQ |
2158 | { |
2159 | print_c_feature v (filename_after_features); | |
81adfced | 2160 | |
25aa13e5 YQ |
2161 | tdesc->accept (v); |
2162 | } | |
2163 | else | |
2164 | { | |
2165 | print_c_tdesc v (filename_after_features); | |
2166 | ||
2167 | tdesc->accept (v); | |
2168 | } | |
81adfced DJ |
2169 | } |
2170 | ||
27d41eac YQ |
2171 | namespace selftests { |
2172 | ||
2173 | static std::vector<std::pair<const char*, const target_desc *>> xml_tdesc; | |
2174 | ||
2175 | #if GDB_SELF_TEST | |
2176 | ||
2177 | /* See target-descritpions.h. */ | |
2178 | ||
2179 | void | |
2180 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
2181 | { | |
2182 | xml_tdesc.emplace_back (xml_file, tdesc); | |
2183 | } | |
2184 | #endif | |
2185 | ||
2186 | } | |
2187 | ||
2188 | /* Check that the target descriptions created dynamically by | |
2189 | architecture-specific code equal the descriptions created from XML files | |
2190 | found in the specified directory DIR. */ | |
2191 | ||
2192 | static void | |
e100df1a | 2193 | maintenance_check_xml_descriptions (const char *dir, int from_tty) |
27d41eac YQ |
2194 | { |
2195 | if (dir == NULL) | |
2196 | error (_("Missing dir name")); | |
2197 | ||
2198 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
2199 | std::string feature_dir (dir1.get ()); | |
2200 | unsigned int failed = 0; | |
2201 | ||
2202 | for (auto const &e : selftests::xml_tdesc) | |
2203 | { | |
2204 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.first); | |
2205 | const target_desc *tdesc | |
2206 | = file_read_description_xml (tdesc_xml.data ()); | |
2207 | ||
2208 | if (tdesc == NULL || *tdesc != *e.second) | |
2209 | failed++; | |
2210 | } | |
2211 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
2212 | (long) selftests::xml_tdesc.size (), failed); | |
2213 | } | |
2214 | ||
23181151 DJ |
2215 | void |
2216 | _initialize_target_descriptions (void) | |
2217 | { | |
123dc839 DJ |
2218 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
2219 | ||
23181151 DJ |
2220 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
2221 | Set target description specific variables."), | |
2222 | &tdesc_set_cmdlist, "set tdesc ", | |
2223 | 0 /* allow-unknown */, &setlist); | |
2224 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
2225 | Show target description specific variables."), | |
2226 | &tdesc_show_cmdlist, "show tdesc ", | |
2227 | 0 /* allow-unknown */, &showlist); | |
2228 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2229 | Unset target description specific variables."), | |
2230 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2231 | 0 /* allow-unknown */, &unsetlist); | |
2232 | ||
2233 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2234 | &tdesc_filename_cmd_string, |
23181151 DJ |
2235 | _("\ |
2236 | Set the file to read for an XML target description"), _("\ | |
2237 | Show the file to read for an XML target description"), _("\ | |
2238 | When set, GDB will read the target description from a local\n\ | |
2239 | file instead of querying the remote target."), | |
2240 | set_tdesc_filename_cmd, | |
2241 | show_tdesc_filename_cmd, | |
2242 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2243 | ||
2244 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2245 | Unset the file to read for an XML target description. When unset,\n\ | |
2246 | GDB will read the description from the target."), | |
2247 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2248 | |
2249 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2250 | Print the current target description as a C source file."), | |
2251 | &maintenanceprintlist); | |
27d41eac YQ |
2252 | |
2253 | cmd_list_element *cmd; | |
2254 | ||
2255 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
2256 | maintenance_check_xml_descriptions, _("\ | |
2257 | Check the target descriptions created in GDB equal the descriptions\n\ | |
2258 | created from XML files in the directory.\n\ | |
2259 | The parameter is the directory name."), | |
2260 | &maintenancechecklist); | |
2261 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 2262 | } |