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 UW |
154 | |
155 | typedef struct tdesc_type_field | |
156 | { | |
157 | char *name; | |
158 | struct tdesc_type *type; | |
81516450 DE |
159 | /* For non-enum-values, either both are -1 (non-bitfield), or both are |
160 | not -1 (bitfield). For enum values, start is the value (which could be | |
161 | -1), end is -1. */ | |
f5dff777 | 162 | int start, end; |
ad068eab UW |
163 | } tdesc_type_field; |
164 | DEF_VEC_O(tdesc_type_field); | |
165 | ||
52059ffd TT |
166 | enum tdesc_type_kind |
167 | { | |
168 | /* Predefined types. */ | |
81516450 | 169 | TDESC_TYPE_BOOL, |
52059ffd TT |
170 | TDESC_TYPE_INT8, |
171 | TDESC_TYPE_INT16, | |
172 | TDESC_TYPE_INT32, | |
173 | TDESC_TYPE_INT64, | |
174 | TDESC_TYPE_INT128, | |
175 | TDESC_TYPE_UINT8, | |
176 | TDESC_TYPE_UINT16, | |
177 | TDESC_TYPE_UINT32, | |
178 | TDESC_TYPE_UINT64, | |
179 | TDESC_TYPE_UINT128, | |
180 | TDESC_TYPE_CODE_PTR, | |
181 | TDESC_TYPE_DATA_PTR, | |
182 | TDESC_TYPE_IEEE_SINGLE, | |
183 | TDESC_TYPE_IEEE_DOUBLE, | |
184 | TDESC_TYPE_ARM_FPA_EXT, | |
185 | TDESC_TYPE_I387_EXT, | |
186 | ||
187 | /* Types defined by a target feature. */ | |
188 | TDESC_TYPE_VECTOR, | |
189 | TDESC_TYPE_STRUCT, | |
190 | TDESC_TYPE_UNION, | |
81516450 DE |
191 | TDESC_TYPE_FLAGS, |
192 | TDESC_TYPE_ENUM | |
52059ffd TT |
193 | }; |
194 | ||
6eb1e6a8 | 195 | typedef struct tdesc_type : tdesc_element |
ad068eab | 196 | { |
72ddacb7 YQ |
197 | tdesc_type (const char *name_, enum tdesc_type_kind kind_) |
198 | : name (xstrdup (name_)), kind (kind_) | |
199 | { | |
200 | memset (&u, 0, sizeof (u)); | |
201 | } | |
202 | ||
6eb1e6a8 | 203 | virtual ~tdesc_type () |
72ddacb7 YQ |
204 | { |
205 | switch (kind) | |
206 | { | |
207 | case TDESC_TYPE_STRUCT: | |
208 | case TDESC_TYPE_UNION: | |
209 | case TDESC_TYPE_FLAGS: | |
210 | case TDESC_TYPE_ENUM: | |
211 | { | |
212 | struct tdesc_type_field *f; | |
213 | int ix; | |
214 | ||
215 | for (ix = 0; | |
216 | VEC_iterate (tdesc_type_field, u.u.fields, ix, f); | |
217 | ix++) | |
218 | xfree (f->name); | |
219 | ||
220 | VEC_free (tdesc_type_field, u.u.fields); | |
221 | } | |
222 | break; | |
223 | ||
224 | default: | |
225 | break; | |
226 | } | |
227 | xfree ((char *) name); | |
228 | } | |
d6541620 YQ |
229 | |
230 | DISABLE_COPY_AND_ASSIGN (tdesc_type); | |
72ddacb7 | 231 | |
a121b7c1 PA |
232 | /* The name of this type. If this type is a built-in type, this is |
233 | a pointer to a constant string. Otherwise, it's a | |
234 | malloc-allocated string (and thus must be freed). */ | |
235 | const char *name; | |
ad068eab UW |
236 | |
237 | /* Identify the kind of this type. */ | |
52059ffd | 238 | enum tdesc_type_kind kind; |
ad068eab UW |
239 | |
240 | /* Kind-specific data. */ | |
241 | union | |
242 | { | |
243 | /* Vector type. */ | |
244 | struct | |
245 | { | |
246 | struct tdesc_type *type; | |
247 | int count; | |
248 | } v; | |
249 | ||
81516450 | 250 | /* Struct, union, flags, or enum type. */ |
ad068eab UW |
251 | struct |
252 | { | |
253 | VEC(tdesc_type_field) *fields; | |
54157a25 | 254 | int size; |
ad068eab UW |
255 | } u; |
256 | } u; | |
6eb1e6a8 YQ |
257 | |
258 | void accept (tdesc_element_visitor &v) const override | |
259 | { | |
260 | v.visit (this); | |
261 | } | |
262 | ||
27d41eac YQ |
263 | bool operator== (const tdesc_type &other) const |
264 | { | |
265 | return (streq (name, other.name) && kind == other.kind); | |
266 | } | |
267 | ||
268 | bool operator!= (const tdesc_type &other) const | |
269 | { | |
270 | return !(*this == other); | |
271 | } | |
ad068eab UW |
272 | } *tdesc_type_p; |
273 | DEF_VEC_P(tdesc_type_p); | |
123dc839 DJ |
274 | |
275 | /* A feature from a target description. Each feature is a collection | |
276 | of other elements, e.g. registers and types. */ | |
277 | ||
3eea796c | 278 | struct tdesc_feature : tdesc_element |
123dc839 | 279 | { |
f65ff9f9 SM |
280 | tdesc_feature (const std::string &name_) |
281 | : name (name_) | |
72ddacb7 YQ |
282 | {} |
283 | ||
6eb1e6a8 | 284 | virtual ~tdesc_feature () |
72ddacb7 | 285 | { |
72ddacb7 YQ |
286 | struct tdesc_type *type; |
287 | int ix; | |
288 | ||
72ddacb7 YQ |
289 | for (ix = 0; VEC_iterate (tdesc_type_p, types, ix, type); ix++) |
290 | delete type; | |
291 | VEC_free (tdesc_type_p, types); | |
72ddacb7 YQ |
292 | } |
293 | ||
d6541620 | 294 | DISABLE_COPY_AND_ASSIGN (tdesc_feature); |
72ddacb7 | 295 | |
123dc839 DJ |
296 | /* The name of this feature. It may be recognized by the architecture |
297 | support code. */ | |
f65ff9f9 | 298 | std::string name; |
123dc839 DJ |
299 | |
300 | /* The registers associated with this feature. */ | |
c9c895b9 | 301 | std::vector<std::unique_ptr<tdesc_reg>> registers; |
123dc839 DJ |
302 | |
303 | /* The types associated with this feature. */ | |
72ddacb7 | 304 | VEC(tdesc_type_p) *types = NULL; |
6eb1e6a8 YQ |
305 | |
306 | void accept (tdesc_element_visitor &v) const override | |
307 | { | |
25aa13e5 | 308 | v.visit_pre (this); |
6eb1e6a8 YQ |
309 | |
310 | struct tdesc_type *type; | |
311 | ||
312 | for (int ix = 0; | |
313 | VEC_iterate (tdesc_type_p, types, ix, type); | |
314 | ix++) | |
315 | type->accept (v); | |
316 | ||
c9c895b9 | 317 | for (const tdesc_reg_up ® : registers) |
6eb1e6a8 YQ |
318 | reg->accept (v); |
319 | ||
25aa13e5 YQ |
320 | v.visit_post (this); |
321 | } | |
27d41eac YQ |
322 | |
323 | bool operator== (const tdesc_feature &other) const | |
324 | { | |
f65ff9f9 | 325 | if (name != other.name) |
27d41eac YQ |
326 | return false; |
327 | ||
c9c895b9 | 328 | if (registers.size () != other.registers.size ()) |
27d41eac YQ |
329 | return false; |
330 | ||
c9c895b9 | 331 | for (int ix = 0; ix < registers.size (); ix++) |
27d41eac | 332 | { |
c9c895b9 SM |
333 | const tdesc_reg_up ®1 = registers[ix]; |
334 | const tdesc_reg_up ®2 = other.registers[ix]; | |
27d41eac | 335 | |
c9c895b9 | 336 | if (reg1 != reg2 && *reg1 != *reg2) |
27d41eac YQ |
337 | return false; |
338 | } | |
339 | ||
340 | if (VEC_length (tdesc_type_p, types) | |
341 | != VEC_length (tdesc_type_p, other.types)) | |
342 | return false; | |
343 | ||
344 | tdesc_type *type; | |
345 | ||
346 | for (int ix = 0; | |
347 | VEC_iterate (tdesc_type_p, types, ix, type); | |
348 | ix++) | |
349 | { | |
350 | tdesc_type *type2 | |
351 | = VEC_index (tdesc_type_p, other.types, ix); | |
352 | ||
353 | if (type != type2 && *type != *type2) | |
354 | return false; | |
355 | } | |
356 | ||
357 | return true; | |
358 | } | |
359 | ||
360 | bool operator!= (const tdesc_feature &other) const | |
361 | { | |
362 | return !(*this == other); | |
363 | } | |
364 | ||
3eea796c SM |
365 | }; |
366 | ||
367 | typedef std::unique_ptr<tdesc_feature> tdesc_feature_up; | |
123dc839 DJ |
368 | |
369 | /* A target description. */ | |
370 | ||
6eb1e6a8 | 371 | struct target_desc : tdesc_element |
424163ea | 372 | { |
b468ff4c YQ |
373 | target_desc () |
374 | {} | |
375 | ||
3eea796c | 376 | virtual ~target_desc () = default; |
b468ff4c YQ |
377 | |
378 | target_desc (const target_desc &) = delete; | |
379 | void operator= (const target_desc &) = delete; | |
380 | ||
23181151 | 381 | /* The architecture reported by the target, if any. */ |
b468ff4c | 382 | const struct bfd_arch_info *arch = NULL; |
23181151 | 383 | |
08d16641 PA |
384 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
385 | otherwise. */ | |
b468ff4c | 386 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 387 | |
e35359c5 | 388 | /* The list of compatible architectures reported by the target. */ |
40e2a983 | 389 | std::vector<const bfd_arch_info *> compatible; |
e35359c5 | 390 | |
29709017 | 391 | /* Any architecture-specific properties specified by the target. */ |
129c10bc | 392 | std::vector<property> properties; |
123dc839 DJ |
393 | |
394 | /* The features associated with this target. */ | |
3eea796c | 395 | std::vector<std::unique_ptr<tdesc_feature>> features; |
6eb1e6a8 YQ |
396 | |
397 | void accept (tdesc_element_visitor &v) const override | |
398 | { | |
399 | v.visit_pre (this); | |
400 | ||
3eea796c | 401 | for (const tdesc_feature_up &feature : features) |
6eb1e6a8 YQ |
402 | feature->accept (v); |
403 | ||
404 | v.visit_post (this); | |
405 | } | |
27d41eac YQ |
406 | |
407 | bool operator== (const target_desc &other) const | |
408 | { | |
409 | if (arch != other.arch) | |
410 | return false; | |
411 | ||
412 | if (osabi != other.osabi) | |
413 | return false; | |
414 | ||
3eea796c | 415 | if (features.size () != other.features.size ()) |
27d41eac YQ |
416 | return false; |
417 | ||
3eea796c | 418 | for (int ix = 0; ix < features.size (); ix++) |
27d41eac | 419 | { |
3eea796c SM |
420 | const tdesc_feature_up &feature1 = features[ix]; |
421 | const tdesc_feature_up &feature2 = other.features[ix]; | |
27d41eac | 422 | |
3eea796c | 423 | if (feature1 != feature2 && *feature1 != *feature2) |
27d41eac YQ |
424 | return false; |
425 | } | |
426 | ||
427 | return true; | |
428 | } | |
429 | ||
430 | bool operator!= (const target_desc &other) const | |
431 | { | |
432 | return !(*this == other); | |
433 | } | |
123dc839 DJ |
434 | }; |
435 | ||
436 | /* Per-architecture data associated with a target description. The | |
437 | target description may be shared by multiple architectures, but | |
438 | this data is private to one gdbarch. */ | |
439 | ||
ad068eab UW |
440 | typedef struct tdesc_arch_reg |
441 | { | |
442 | struct tdesc_reg *reg; | |
443 | struct type *type; | |
444 | } tdesc_arch_reg; | |
445 | DEF_VEC_O(tdesc_arch_reg); | |
446 | ||
123dc839 DJ |
447 | struct tdesc_arch_data |
448 | { | |
ad068eab | 449 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
450 | During initialization of the gdbarch this list is used to store |
451 | registers which the architecture assigns a fixed register number. | |
452 | Registers which are NULL in this array, or off the end, are | |
453 | treated as zero-sized and nameless (i.e. placeholders in the | |
454 | numbering). */ | |
ad068eab | 455 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
456 | |
457 | /* Functions which report the register name, type, and reggroups for | |
458 | pseudo-registers. */ | |
459 | gdbarch_register_name_ftype *pseudo_register_name; | |
460 | gdbarch_register_type_ftype *pseudo_register_type; | |
461 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
462 | }; |
463 | ||
6ecd4729 PA |
464 | /* Info about an inferior's target description. There's one of these |
465 | for each inferior. */ | |
424163ea | 466 | |
6ecd4729 PA |
467 | struct target_desc_info |
468 | { | |
469 | /* A flag indicating that a description has already been fetched | |
470 | from the target, so it should not be queried again. */ | |
471 | ||
472 | int fetched; | |
424163ea | 473 | |
6ecd4729 PA |
474 | /* The description fetched from the target, or NULL if the target |
475 | did not supply any description. Only valid when | |
476 | target_desc_fetched is set. Only the description initialization | |
477 | code should access this; normally, the description should be | |
478 | accessed through the gdbarch object. */ | |
424163ea | 479 | |
6ecd4729 | 480 | const struct target_desc *tdesc; |
424163ea | 481 | |
6ecd4729 PA |
482 | /* The filename to read a target description from, as set by "set |
483 | tdesc filename ..." */ | |
424163ea | 484 | |
6ecd4729 PA |
485 | char *filename; |
486 | }; | |
23181151 | 487 | |
6ecd4729 PA |
488 | /* Get the inferior INF's target description info, allocating one on |
489 | the stop if necessary. */ | |
23181151 | 490 | |
6ecd4729 PA |
491 | static struct target_desc_info * |
492 | get_tdesc_info (struct inferior *inf) | |
493 | { | |
494 | if (inf->tdesc_info == NULL) | |
495 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
496 | return inf->tdesc_info; | |
497 | } | |
23181151 | 498 | |
123dc839 DJ |
499 | /* A handle for architecture-specific data associated with the |
500 | target description (see struct tdesc_arch_data). */ | |
501 | ||
502 | static struct gdbarch_data *tdesc_data; | |
503 | ||
6ecd4729 PA |
504 | /* See target-descriptions.h. */ |
505 | ||
506 | int | |
507 | target_desc_info_from_user_p (struct target_desc_info *info) | |
508 | { | |
509 | return info != NULL && info->filename != NULL; | |
510 | } | |
511 | ||
512 | /* See target-descriptions.h. */ | |
513 | ||
514 | void | |
515 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
516 | { | |
517 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
518 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
519 | ||
520 | dest->fetched = src->fetched; | |
521 | dest->tdesc = src->tdesc; | |
522 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
523 | } | |
524 | ||
525 | /* See target-descriptions.h. */ | |
526 | ||
527 | void | |
528 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
529 | { | |
530 | if (tdesc_info != NULL) | |
531 | { | |
532 | xfree (tdesc_info->filename); | |
533 | xfree (tdesc_info); | |
534 | } | |
535 | } | |
536 | ||
537 | /* Convenience helper macros. */ | |
538 | ||
539 | #define target_desc_fetched \ | |
540 | get_tdesc_info (current_inferior ())->fetched | |
541 | #define current_target_desc \ | |
542 | get_tdesc_info (current_inferior ())->tdesc | |
543 | #define target_description_filename \ | |
544 | get_tdesc_info (current_inferior ())->filename | |
545 | ||
546 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
547 | ||
548 | static char *tdesc_filename_cmd_string; | |
549 | ||
424163ea DJ |
550 | /* Fetch the current target's description, and switch the current |
551 | architecture to one which incorporates that description. */ | |
552 | ||
553 | void | |
554 | target_find_description (void) | |
555 | { | |
556 | /* If we've already fetched a description from the target, don't do | |
557 | it again. This allows a target to fetch the description early, | |
558 | during its to_open or to_create_inferior, if it needs extra | |
559 | information about the target to initialize. */ | |
560 | if (target_desc_fetched) | |
561 | return; | |
562 | ||
563 | /* The current architecture should not have any target description | |
564 | specified. It should have been cleared, e.g. when we | |
565 | disconnected from the previous target. */ | |
f5656ead | 566 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 567 | |
23181151 DJ |
568 | /* First try to fetch an XML description from the user-specified |
569 | file. */ | |
570 | current_target_desc = NULL; | |
571 | if (target_description_filename != NULL | |
572 | && *target_description_filename != '\0') | |
573 | current_target_desc | |
574 | = file_read_description_xml (target_description_filename); | |
575 | ||
576 | /* Next try to read the description from the current target using | |
577 | target objects. */ | |
578 | if (current_target_desc == NULL) | |
579 | current_target_desc = target_read_description_xml (¤t_target); | |
580 | ||
581 | /* If that failed try a target-specific hook. */ | |
582 | if (current_target_desc == NULL) | |
583 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
584 | |
585 | /* If a non-NULL description was returned, then update the current | |
586 | architecture. */ | |
587 | if (current_target_desc) | |
588 | { | |
589 | struct gdbarch_info info; | |
590 | ||
591 | gdbarch_info_init (&info); | |
592 | info.target_desc = current_target_desc; | |
593 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
594 | warning (_("Architecture rejected target-supplied description")); |
595 | else | |
596 | { | |
597 | struct tdesc_arch_data *data; | |
598 | ||
19ba03f4 SM |
599 | data = ((struct tdesc_arch_data *) |
600 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 601 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 602 | && data->arch_regs == NULL) |
123dc839 DJ |
603 | warning (_("Target-supplied registers are not supported " |
604 | "by the current architecture")); | |
605 | } | |
424163ea DJ |
606 | } |
607 | ||
608 | /* Now that we know this description is usable, record that we | |
609 | fetched it. */ | |
610 | target_desc_fetched = 1; | |
611 | } | |
612 | ||
613 | /* Discard any description fetched from the current target, and switch | |
614 | the current architecture to one with no target description. */ | |
615 | ||
616 | void | |
617 | target_clear_description (void) | |
618 | { | |
619 | struct gdbarch_info info; | |
620 | ||
621 | if (!target_desc_fetched) | |
622 | return; | |
623 | ||
624 | target_desc_fetched = 0; | |
625 | current_target_desc = NULL; | |
626 | ||
627 | gdbarch_info_init (&info); | |
628 | if (!gdbarch_update_p (info)) | |
629 | internal_error (__FILE__, __LINE__, | |
630 | _("Could not remove target-supplied description")); | |
631 | } | |
632 | ||
633 | /* Return the global current target description. This should only be | |
634 | used by gdbarch initialization code; most access should be through | |
635 | an existing gdbarch. */ | |
636 | ||
637 | const struct target_desc * | |
638 | target_current_description (void) | |
639 | { | |
640 | if (target_desc_fetched) | |
641 | return current_target_desc; | |
642 | ||
643 | return NULL; | |
644 | } | |
e35359c5 UW |
645 | |
646 | /* Return non-zero if this target description is compatible | |
647 | with the given BFD architecture. */ | |
648 | ||
649 | int | |
650 | tdesc_compatible_p (const struct target_desc *target_desc, | |
651 | const struct bfd_arch_info *arch) | |
652 | { | |
40e2a983 | 653 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
654 | { |
655 | if (compat == arch | |
656 | || arch->compatible (arch, compat) | |
657 | || compat->compatible (compat, arch)) | |
658 | return 1; | |
659 | } | |
660 | ||
661 | return 0; | |
662 | } | |
23181151 DJ |
663 | \f |
664 | ||
123dc839 | 665 | /* Direct accessors for target descriptions. */ |
424163ea | 666 | |
29709017 DJ |
667 | /* Return the string value of a property named KEY, or NULL if the |
668 | property was not specified. */ | |
669 | ||
670 | const char * | |
671 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
672 | { | |
129c10bc SM |
673 | for (const property &prop : target_desc->properties) |
674 | if (prop.key == key) | |
675 | return prop.value.c_str (); | |
29709017 DJ |
676 | |
677 | return NULL; | |
678 | } | |
679 | ||
23181151 DJ |
680 | /* Return the BFD architecture associated with this target |
681 | description, or NULL if no architecture was specified. */ | |
682 | ||
683 | const struct bfd_arch_info * | |
684 | tdesc_architecture (const struct target_desc *target_desc) | |
685 | { | |
686 | return target_desc->arch; | |
687 | } | |
08d16641 PA |
688 | |
689 | /* Return the OSABI associated with this target description, or | |
690 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
691 | ||
692 | enum gdb_osabi | |
693 | tdesc_osabi (const struct target_desc *target_desc) | |
694 | { | |
695 | return target_desc->osabi; | |
696 | } | |
697 | ||
23181151 DJ |
698 | \f |
699 | ||
123dc839 DJ |
700 | /* Return 1 if this target description includes any registers. */ |
701 | ||
702 | int | |
703 | tdesc_has_registers (const struct target_desc *target_desc) | |
704 | { | |
123dc839 DJ |
705 | if (target_desc == NULL) |
706 | return 0; | |
707 | ||
3eea796c | 708 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 709 | if (!feature->registers.empty ()) |
123dc839 DJ |
710 | return 1; |
711 | ||
712 | return 0; | |
713 | } | |
714 | ||
715 | /* Return the feature with the given name, if present, or NULL if | |
716 | the named feature is not found. */ | |
717 | ||
718 | const struct tdesc_feature * | |
719 | tdesc_find_feature (const struct target_desc *target_desc, | |
720 | const char *name) | |
721 | { | |
3eea796c | 722 | for (const tdesc_feature_up &feature : target_desc->features) |
f65ff9f9 | 723 | if (feature->name == name) |
3eea796c | 724 | return feature.get (); |
123dc839 DJ |
725 | |
726 | return NULL; | |
727 | } | |
728 | ||
729 | /* Return the name of FEATURE. */ | |
730 | ||
731 | const char * | |
732 | tdesc_feature_name (const struct tdesc_feature *feature) | |
733 | { | |
f65ff9f9 | 734 | return feature->name.c_str (); |
123dc839 DJ |
735 | } |
736 | ||
ad068eab UW |
737 | /* Predefined types. */ |
738 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 739 | { |
81516450 | 740 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
741 | { "int8", TDESC_TYPE_INT8 }, |
742 | { "int16", TDESC_TYPE_INT16 }, | |
743 | { "int32", TDESC_TYPE_INT32 }, | |
744 | { "int64", TDESC_TYPE_INT64 }, | |
745 | { "int128", TDESC_TYPE_INT128 }, | |
746 | { "uint8", TDESC_TYPE_UINT8 }, | |
747 | { "uint16", TDESC_TYPE_UINT16 }, | |
748 | { "uint32", TDESC_TYPE_UINT32 }, | |
749 | { "uint64", TDESC_TYPE_UINT64 }, | |
750 | { "uint128", TDESC_TYPE_UINT128 }, | |
751 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
752 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
753 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
754 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 755 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 756 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 757 | }; |
81adfced | 758 | |
81516450 DE |
759 | /* Lookup a predefined type. */ |
760 | ||
761 | static struct tdesc_type * | |
762 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
763 | { | |
798a7429 | 764 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
81516450 DE |
765 | if (tdesc_predefined_types[ix].kind == kind) |
766 | return &tdesc_predefined_types[ix]; | |
767 | ||
768 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
769 | } | |
770 | ||
f49ff000 | 771 | /* See arch/tdesc.h. */ |
123dc839 | 772 | |
ad068eab | 773 | struct tdesc_type * |
123dc839 DJ |
774 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
775 | { | |
776 | int ix; | |
ad068eab | 777 | struct tdesc_type *type; |
123dc839 DJ |
778 | |
779 | /* First try target-defined types. */ | |
ad068eab UW |
780 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
781 | if (strcmp (type->name, id) == 0) | |
782 | return type; | |
123dc839 | 783 | |
81adfced DJ |
784 | /* Next try the predefined types. */ |
785 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
786 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 787 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
788 | |
789 | return NULL; | |
790 | } | |
ad068eab | 791 | |
9fd3625f L |
792 | /* Lookup type associated with ID. */ |
793 | ||
794 | struct type * | |
795 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
796 | { | |
797 | struct tdesc_arch_reg *reg; | |
798 | struct tdesc_arch_data *data; | |
799 | int i, num_regs; | |
800 | ||
19ba03f4 | 801 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
9fd3625f L |
802 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); |
803 | for (i = 0; i < num_regs; i++) | |
804 | { | |
805 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); | |
806 | if (reg->reg | |
807 | && reg->reg->tdesc_type | |
808 | && reg->type | |
809 | && strcmp (id, reg->reg->tdesc_type->name) == 0) | |
810 | return reg->type; | |
811 | } | |
812 | ||
813 | return NULL; | |
814 | } | |
815 | ||
ad068eab UW |
816 | /* Construct, if necessary, and return the GDB type implementing target |
817 | type TDESC_TYPE for architecture GDBARCH. */ | |
818 | ||
819 | static struct type * | |
820 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
821 | { | |
9fd3625f L |
822 | struct type *type; |
823 | ||
ad068eab UW |
824 | switch (tdesc_type->kind) |
825 | { | |
826 | /* Predefined types. */ | |
81516450 DE |
827 | case TDESC_TYPE_BOOL: |
828 | return builtin_type (gdbarch)->builtin_bool; | |
829 | ||
ad068eab | 830 | case TDESC_TYPE_INT8: |
df4df182 | 831 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
832 | |
833 | case TDESC_TYPE_INT16: | |
df4df182 | 834 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
835 | |
836 | case TDESC_TYPE_INT32: | |
df4df182 | 837 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
838 | |
839 | case TDESC_TYPE_INT64: | |
df4df182 | 840 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
841 | |
842 | case TDESC_TYPE_INT128: | |
df4df182 | 843 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
844 | |
845 | case TDESC_TYPE_UINT8: | |
df4df182 | 846 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
847 | |
848 | case TDESC_TYPE_UINT16: | |
df4df182 | 849 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
850 | |
851 | case TDESC_TYPE_UINT32: | |
df4df182 | 852 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
853 | |
854 | case TDESC_TYPE_UINT64: | |
df4df182 | 855 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
856 | |
857 | case TDESC_TYPE_UINT128: | |
df4df182 | 858 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
859 | |
860 | case TDESC_TYPE_CODE_PTR: | |
861 | return builtin_type (gdbarch)->builtin_func_ptr; | |
862 | ||
863 | case TDESC_TYPE_DATA_PTR: | |
864 | return builtin_type (gdbarch)->builtin_data_ptr; | |
865 | ||
9fd3625f L |
866 | default: |
867 | break; | |
868 | } | |
869 | ||
870 | type = tdesc_find_type (gdbarch, tdesc_type->name); | |
871 | if (type) | |
872 | return type; | |
873 | ||
874 | switch (tdesc_type->kind) | |
875 | { | |
ad068eab | 876 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 877 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 878 | floatformats_ieee_single); |
ad068eab UW |
879 | |
880 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 881 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 882 | floatformats_ieee_double); |
ad068eab UW |
883 | |
884 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 885 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 886 | floatformats_arm_ext); |
ad068eab | 887 | |
9fd3625f L |
888 | case TDESC_TYPE_I387_EXT: |
889 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
890 | floatformats_i387_ext); | |
891 | ||
ad068eab UW |
892 | /* Types defined by a target feature. */ |
893 | case TDESC_TYPE_VECTOR: | |
894 | { | |
895 | struct type *type, *field_type; | |
896 | ||
897 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
898 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
899 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
900 | ||
901 | return type; | |
902 | } | |
903 | ||
f5dff777 DJ |
904 | case TDESC_TYPE_STRUCT: |
905 | { | |
906 | struct type *type, *field_type; | |
907 | struct tdesc_type_field *f; | |
908 | int ix; | |
909 | ||
910 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); | |
911 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
912 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
913 | ||
914 | for (ix = 0; | |
915 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
916 | ix++) | |
917 | { | |
81516450 | 918 | if (f->start != -1 && f->end != -1) |
f5dff777 DJ |
919 | { |
920 | /* Bitfield. */ | |
921 | struct field *fld; | |
922 | struct type *field_type; | |
923 | int bitsize, total_size; | |
924 | ||
81516450 | 925 | /* This invariant should be preserved while creating types. */ |
f5dff777 | 926 | gdb_assert (tdesc_type->u.u.size != 0); |
81516450 DE |
927 | if (f->type != NULL) |
928 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
929 | else if (tdesc_type->u.u.size > 4) | |
f5dff777 DJ |
930 | field_type = builtin_type (gdbarch)->builtin_uint64; |
931 | else | |
932 | field_type = builtin_type (gdbarch)->builtin_uint32; | |
933 | ||
934 | fld = append_composite_type_field_raw (type, xstrdup (f->name), | |
935 | field_type); | |
936 | ||
937 | /* For little-endian, BITPOS counts from the LSB of | |
938 | the structure and marks the LSB of the field. For | |
939 | big-endian, BITPOS counts from the MSB of the | |
940 | structure and marks the MSB of the field. Either | |
941 | way, it is the number of bits to the "left" of the | |
942 | field. To calculate this in big-endian, we need | |
943 | the total size of the structure. */ | |
944 | bitsize = f->end - f->start + 1; | |
945 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; | |
946 | if (gdbarch_bits_big_endian (gdbarch)) | |
f41f5e61 | 947 | SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize); |
f5dff777 | 948 | else |
f41f5e61 | 949 | SET_FIELD_BITPOS (fld[0], f->start); |
f5dff777 DJ |
950 | FIELD_BITSIZE (fld[0]) = bitsize; |
951 | } | |
952 | else | |
953 | { | |
81516450 | 954 | gdb_assert (f->start == -1 && f->end == -1); |
f5dff777 DJ |
955 | field_type = tdesc_gdb_type (gdbarch, f->type); |
956 | append_composite_type_field (type, xstrdup (f->name), | |
957 | field_type); | |
958 | } | |
959 | } | |
960 | ||
961 | if (tdesc_type->u.u.size != 0) | |
962 | TYPE_LENGTH (type) = tdesc_type->u.u.size; | |
963 | return type; | |
964 | } | |
965 | ||
ad068eab UW |
966 | case TDESC_TYPE_UNION: |
967 | { | |
968 | struct type *type, *field_type; | |
969 | struct tdesc_type_field *f; | |
970 | int ix; | |
971 | ||
e9bb382b | 972 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
ad068eab UW |
973 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
974 | ||
975 | for (ix = 0; | |
976 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
977 | ix++) | |
978 | { | |
979 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
980 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
981 | ||
f5dff777 | 982 | /* If any of the children of a union are vectors, flag the |
ad068eab UW |
983 | union as a vector also. This allows e.g. a union of two |
984 | vector types to show up automatically in "info vector". */ | |
985 | if (TYPE_VECTOR (field_type)) | |
986 | TYPE_VECTOR (type) = 1; | |
987 | } | |
f5dff777 DJ |
988 | return type; |
989 | } | |
990 | ||
991 | case TDESC_TYPE_FLAGS: | |
992 | { | |
81516450 | 993 | struct tdesc_type_field *f; |
f5dff777 DJ |
994 | int ix; |
995 | ||
3494b66d | 996 | type = arch_flags_type (gdbarch, tdesc_type->name, |
77b7c781 | 997 | tdesc_type->u.u.size * TARGET_CHAR_BIT); |
81516450 DE |
998 | for (ix = 0; |
999 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
1000 | ix++) | |
1001 | { | |
1002 | struct type *field_type; | |
1003 | int bitsize = f->end - f->start + 1; | |
1004 | ||
1005 | gdb_assert (f->type != NULL); | |
1006 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
1007 | append_flags_type_field (type, f->start, bitsize, | |
1008 | field_type, f->name); | |
1009 | } | |
1010 | ||
1011 | return type; | |
1012 | } | |
1013 | ||
1014 | case TDESC_TYPE_ENUM: | |
1015 | { | |
1016 | struct tdesc_type_field *f; | |
1017 | int ix; | |
1018 | ||
1019 | type = arch_type (gdbarch, TYPE_CODE_ENUM, | |
77b7c781 UW |
1020 | tdesc_type->u.u.size * TARGET_CHAR_BIT, |
1021 | tdesc_type->name); | |
81516450 | 1022 | TYPE_UNSIGNED (type) = 1; |
f5dff777 | 1023 | for (ix = 0; |
81516450 | 1024 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
f5dff777 | 1025 | ix++) |
81516450 DE |
1026 | { |
1027 | struct field *fld | |
1028 | = append_composite_type_field_raw (type, xstrdup (f->name), | |
1029 | NULL); | |
1030 | ||
1031 | SET_FIELD_BITPOS (fld[0], f->start); | |
1032 | } | |
ad068eab UW |
1033 | |
1034 | return type; | |
1035 | } | |
1036 | } | |
1037 | ||
1038 | internal_error (__FILE__, __LINE__, | |
1039 | "Type \"%s\" has an unknown kind %d", | |
1040 | tdesc_type->name, tdesc_type->kind); | |
1041 | } | |
123dc839 DJ |
1042 | \f |
1043 | ||
1044 | /* Support for registers from target descriptions. */ | |
1045 | ||
1046 | /* Construct the per-gdbarch data. */ | |
1047 | ||
1048 | static void * | |
1049 | tdesc_data_init (struct obstack *obstack) | |
1050 | { | |
1051 | struct tdesc_arch_data *data; | |
1052 | ||
1053 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
1054 | return data; | |
1055 | } | |
1056 | ||
1057 | /* Similar, but for the temporary copy used during architecture | |
1058 | initialization. */ | |
1059 | ||
1060 | struct tdesc_arch_data * | |
1061 | tdesc_data_alloc (void) | |
1062 | { | |
41bf6aca | 1063 | return XCNEW (struct tdesc_arch_data); |
123dc839 DJ |
1064 | } |
1065 | ||
1066 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
1067 | to be used (for instance if it was unsuitable for the | |
1068 | architecture). */ | |
1069 | ||
1070 | void | |
1071 | tdesc_data_cleanup (void *data_untyped) | |
1072 | { | |
19ba03f4 | 1073 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 1074 | |
ad068eab | 1075 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
1076 | xfree (data); |
1077 | } | |
1078 | ||
1079 | /* Search FEATURE for a register named NAME. */ | |
1080 | ||
7cc46491 DJ |
1081 | static struct tdesc_reg * |
1082 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
1083 | const char *name) | |
123dc839 | 1084 | { |
c9c895b9 | 1085 | for (const tdesc_reg_up ® : feature->registers) |
a8142ee1 | 1086 | if (strcasecmp (reg->name.c_str (), name) == 0) |
c9c895b9 | 1087 | return reg.get (); |
123dc839 | 1088 | |
7cc46491 DJ |
1089 | return NULL; |
1090 | } | |
1091 | ||
1092 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
1093 | ||
1094 | int | |
1095 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
1096 | struct tdesc_arch_data *data, | |
1097 | int regno, const char *name) | |
1098 | { | |
ad068eab | 1099 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
1100 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
1101 | ||
1102 | if (reg == NULL) | |
1103 | return 0; | |
1104 | ||
1105 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
1106 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
1107 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
1108 | ||
1109 | arch_reg.reg = reg; | |
1110 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 1111 | return 1; |
123dc839 DJ |
1112 | } |
1113 | ||
58d6951d DJ |
1114 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
1115 | register number to it. */ | |
1116 | ||
1117 | int | |
1118 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
1119 | const char *name) | |
1120 | { | |
1121 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1122 | ||
1123 | if (reg == NULL) | |
1124 | return 0; | |
1125 | ||
1126 | return 1; | |
1127 | } | |
1128 | ||
7cc46491 DJ |
1129 | /* Search FEATURE for a register whose name is in NAMES and assign |
1130 | REGNO to it. */ | |
123dc839 DJ |
1131 | |
1132 | int | |
1133 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
1134 | struct tdesc_arch_data *data, | |
1135 | int regno, const char *const names[]) | |
1136 | { | |
1137 | int i; | |
1138 | ||
1139 | for (i = 0; names[i] != NULL; i++) | |
1140 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
1141 | return 1; | |
1142 | ||
1143 | return 0; | |
1144 | } | |
1145 | ||
7cc46491 DJ |
1146 | /* Search FEATURE for a register named NAME, and return its size in |
1147 | bits. The register must exist. */ | |
1148 | ||
1149 | int | |
1150 | tdesc_register_size (const struct tdesc_feature *feature, | |
1151 | const char *name) | |
1152 | { | |
1153 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1154 | ||
1155 | gdb_assert (reg != NULL); | |
1156 | return reg->bitsize; | |
1157 | } | |
1158 | ||
123dc839 DJ |
1159 | /* Look up a register by its GDB internal register number. */ |
1160 | ||
ad068eab UW |
1161 | static struct tdesc_arch_reg * |
1162 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 1163 | { |
123dc839 DJ |
1164 | struct tdesc_arch_data *data; |
1165 | ||
19ba03f4 | 1166 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab UW |
1167 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
1168 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
1169 | else |
1170 | return NULL; | |
1171 | } | |
1172 | ||
ad068eab UW |
1173 | static struct tdesc_reg * |
1174 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
1175 | { | |
1176 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 1177 | |
ad068eab UW |
1178 | return reg? reg->reg : NULL; |
1179 | } | |
1180 | ||
f8b73d13 DJ |
1181 | /* Return the name of register REGNO, from the target description or |
1182 | from an architecture-provided pseudo_register_name method. */ | |
1183 | ||
1184 | const char * | |
d93859e2 | 1185 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 1186 | { |
d93859e2 UW |
1187 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1188 | int num_regs = gdbarch_num_regs (gdbarch); | |
1189 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
1190 | |
1191 | if (reg != NULL) | |
a8142ee1 | 1192 | return reg->name.c_str (); |
123dc839 DJ |
1193 | |
1194 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1195 | { | |
19ba03f4 SM |
1196 | struct tdesc_arch_data *data |
1197 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1198 | |
123dc839 | 1199 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 1200 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
1201 | } |
1202 | ||
1203 | return ""; | |
1204 | } | |
1205 | ||
58d6951d | 1206 | struct type * |
123dc839 DJ |
1207 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
1208 | { | |
ad068eab UW |
1209 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
1210 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1211 | int num_regs = gdbarch_num_regs (gdbarch); |
1212 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1213 | ||
1214 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1215 | { | |
19ba03f4 SM |
1216 | struct tdesc_arch_data *data |
1217 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1218 | |
123dc839 DJ |
1219 | gdb_assert (data->pseudo_register_type != NULL); |
1220 | return data->pseudo_register_type (gdbarch, regno); | |
1221 | } | |
1222 | ||
1223 | if (reg == NULL) | |
1224 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1225 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1226 | |
ad068eab | 1227 | if (arch_reg->type == NULL) |
123dc839 | 1228 | { |
ad068eab UW |
1229 | /* First check for a predefined or target defined type. */ |
1230 | if (reg->tdesc_type) | |
1231 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
1232 | ||
1233 | /* Next try size-sensitive type shortcuts. */ | |
a8142ee1 | 1234 | else if (reg->type == "float") |
ad068eab UW |
1235 | { |
1236 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1237 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1238 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1239 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1240 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1241 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1242 | else | |
1243 | { | |
1244 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 1245 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
1246 | arch_reg->type = builtin_type (gdbarch)->builtin_double; |
1247 | } | |
1248 | } | |
a8142ee1 | 1249 | else if (reg->type == "int") |
ad068eab UW |
1250 | { |
1251 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1252 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1253 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1254 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1255 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1256 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1257 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1258 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1259 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1260 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1261 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1262 | /* A bit desperate by this point... */ |
ad068eab UW |
1263 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1264 | else | |
1265 | { | |
1266 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 1267 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
1268 | arch_reg->type = builtin_type (gdbarch)->builtin_long; |
1269 | } | |
1270 | } | |
1271 | ||
1272 | if (arch_reg->type == NULL) | |
1273 | internal_error (__FILE__, __LINE__, | |
1274 | "Register \"%s\" has an unknown type \"%s\"", | |
a8142ee1 | 1275 | reg->name.c_str (), reg->type.c_str ()); |
123dc839 | 1276 | } |
123dc839 | 1277 | |
ad068eab | 1278 | return arch_reg->type; |
123dc839 DJ |
1279 | } |
1280 | ||
1281 | static int | |
1282 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1283 | { | |
1284 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1285 | ||
1286 | if (reg != NULL) | |
1287 | return reg->target_regnum; | |
1288 | else | |
1289 | return -1; | |
1290 | } | |
1291 | ||
1292 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
1293 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
1294 | Unlike a gdbarch register_reggroup_p method, this function will |
1295 | return -1 if it does not know; the caller should handle registers | |
1296 | with no specified group. | |
123dc839 DJ |
1297 | |
1298 | Arbitrary strings (other than "general", "float", and "vector") | |
1299 | from the description are not used; they cause the register to be | |
1300 | displayed in "info all-registers" but excluded from "info | |
1301 | registers" et al. The names of containing features are also not | |
1302 | used. This might be extended to display registers in some more | |
1303 | useful groupings. | |
1304 | ||
1305 | The save-restore flag is also implemented here. */ | |
1306 | ||
f8b73d13 DJ |
1307 | int |
1308 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1309 | struct reggroup *reggroup) | |
123dc839 | 1310 | { |
123dc839 DJ |
1311 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1312 | ||
a8142ee1 | 1313 | if (reg != NULL && !reg->group.empty ()) |
123dc839 DJ |
1314 | { |
1315 | int general_p = 0, float_p = 0, vector_p = 0; | |
1316 | ||
a8142ee1 | 1317 | if (reg->group == "general") |
123dc839 | 1318 | general_p = 1; |
a8142ee1 | 1319 | else if (reg->group == "float") |
123dc839 | 1320 | float_p = 1; |
a8142ee1 | 1321 | else if (reg->group == "vector") |
123dc839 DJ |
1322 | vector_p = 1; |
1323 | ||
1324 | if (reggroup == float_reggroup) | |
1325 | return float_p; | |
1326 | ||
1327 | if (reggroup == vector_reggroup) | |
1328 | return vector_p; | |
1329 | ||
1330 | if (reggroup == general_reggroup) | |
1331 | return general_p; | |
1332 | } | |
1333 | ||
1334 | if (reg != NULL | |
1335 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1336 | return reg->save_restore; | |
1337 | ||
f8b73d13 DJ |
1338 | return -1; |
1339 | } | |
1340 | ||
1341 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1342 | group specified go to the default reggroup function and are handled | |
1343 | by type. */ | |
1344 | ||
1345 | static int | |
1346 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1347 | struct reggroup *reggroup) | |
1348 | { | |
1349 | int num_regs = gdbarch_num_regs (gdbarch); | |
1350 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1351 | int ret; | |
1352 | ||
1353 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1354 | { | |
19ba03f4 SM |
1355 | struct tdesc_arch_data *data |
1356 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1357 | |
58d6951d DJ |
1358 | if (data->pseudo_register_reggroup_p != NULL) |
1359 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1360 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1361 | } |
1362 | ||
1363 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1364 | if (ret != -1) | |
1365 | return ret; | |
1366 | ||
123dc839 DJ |
1367 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1368 | } | |
1369 | ||
1370 | /* Record architecture-specific functions to call for pseudo-register | |
1371 | support. */ | |
1372 | ||
1373 | void | |
1374 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1375 | gdbarch_register_name_ftype *pseudo_name) | |
1376 | { | |
19ba03f4 SM |
1377 | struct tdesc_arch_data *data |
1378 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1379 | |
1380 | data->pseudo_register_name = pseudo_name; | |
1381 | } | |
1382 | ||
1383 | void | |
1384 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1385 | gdbarch_register_type_ftype *pseudo_type) | |
1386 | { | |
19ba03f4 SM |
1387 | struct tdesc_arch_data *data |
1388 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1389 | |
1390 | data->pseudo_register_type = pseudo_type; | |
1391 | } | |
1392 | ||
1393 | void | |
1394 | set_tdesc_pseudo_register_reggroup_p | |
1395 | (struct gdbarch *gdbarch, | |
1396 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1397 | { | |
19ba03f4 SM |
1398 | struct tdesc_arch_data *data |
1399 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1400 | |
1401 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1402 | } | |
1403 | ||
1404 | /* Update GDBARCH to use the target description for registers. */ | |
1405 | ||
1406 | void | |
1407 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1408 | const struct target_desc *target_desc, |
123dc839 DJ |
1409 | struct tdesc_arch_data *early_data) |
1410 | { | |
1411 | int num_regs = gdbarch_num_regs (gdbarch); | |
123dc839 | 1412 | struct tdesc_arch_data *data; |
ad068eab | 1413 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
1414 | htab_t reg_hash; |
1415 | ||
123dc839 DJ |
1416 | /* We can't use the description for registers if it doesn't describe |
1417 | any. This function should only be called after validating | |
1418 | registers, so the caller should know that registers are | |
1419 | included. */ | |
1420 | gdb_assert (tdesc_has_registers (target_desc)); | |
1421 | ||
19ba03f4 | 1422 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1423 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
1424 | xfree (early_data); |
1425 | ||
1426 | /* Build up a set of all registers, so that we can assign register | |
1427 | numbers where needed. The hash table expands as necessary, so | |
1428 | the initial size is arbitrary. */ | |
1429 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
3eea796c | 1430 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 1431 | for (const tdesc_reg_up ® : feature->registers) |
123dc839 | 1432 | { |
c9c895b9 | 1433 | void **slot = htab_find_slot (reg_hash, reg.get (), INSERT); |
123dc839 | 1434 | |
c9c895b9 | 1435 | *slot = reg.get (); |
123dc839 DJ |
1436 | } |
1437 | ||
1438 | /* Remove any registers which were assigned numbers by the | |
1439 | architecture. */ | |
c9c895b9 | 1440 | for (int ixr = 0; |
ad068eab UW |
1441 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); |
1442 | ixr++) | |
1443 | if (arch_reg->reg) | |
1444 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
1445 | |
1446 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1447 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1448 | Iterate over the features, not the hash table, so that the order |
1449 | matches that in the target description. */ | |
1450 | ||
ad068eab UW |
1451 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1452 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1453 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
3eea796c | 1454 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 SM |
1455 | for (const tdesc_reg_up ® : feature->registers) |
1456 | if (htab_find (reg_hash, reg.get ()) != NULL) | |
123dc839 | 1457 | { |
c9c895b9 | 1458 | new_arch_reg.reg = reg.get (); |
ad068eab | 1459 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); |
123dc839 DJ |
1460 | num_regs++; |
1461 | } | |
1462 | ||
1463 | htab_delete (reg_hash); | |
1464 | ||
1465 | /* Update the architecture. */ | |
1466 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1467 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1468 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1469 | set_gdbarch_remote_register_number (gdbarch, | |
1470 | tdesc_remote_register_number); | |
1471 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1472 | } | |
1473 | \f | |
1474 | ||
f49ff000 YQ |
1475 | /* See arch/tdesc.h. */ |
1476 | ||
123dc839 DJ |
1477 | void |
1478 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1479 | int regnum, int save_restore, const char *group, | |
1480 | int bitsize, const char *type) | |
1481 | { | |
72ddacb7 YQ |
1482 | tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, |
1483 | group, bitsize, type); | |
123dc839 | 1484 | |
c9c895b9 | 1485 | feature->registers.emplace_back (reg); |
123dc839 DJ |
1486 | } |
1487 | ||
f49ff000 YQ |
1488 | /* See arch/tdesc.h. */ |
1489 | ||
ad068eab UW |
1490 | struct tdesc_type * |
1491 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1492 | struct tdesc_type *field_type, int count) | |
1493 | { | |
72ddacb7 | 1494 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_VECTOR); |
ad068eab | 1495 | |
ad068eab UW |
1496 | type->u.v.type = field_type; |
1497 | type->u.v.count = count; | |
1498 | ||
1499 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1500 | return type; | |
1501 | } | |
1502 | ||
f49ff000 YQ |
1503 | /* See arch/tdesc.h. */ |
1504 | ||
f5dff777 DJ |
1505 | struct tdesc_type * |
1506 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
1507 | { | |
72ddacb7 | 1508 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_STRUCT); |
f5dff777 DJ |
1509 | |
1510 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1511 | return type; | |
1512 | } | |
1513 | ||
f49ff000 | 1514 | /* See arch/tdesc.h. */ |
f5dff777 DJ |
1515 | |
1516 | void | |
54157a25 | 1517 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
f5dff777 DJ |
1518 | { |
1519 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1520 | gdb_assert (size > 0); |
f5dff777 DJ |
1521 | type->u.u.size = size; |
1522 | } | |
1523 | ||
f49ff000 YQ |
1524 | /* See arch/tdesc.h. */ |
1525 | ||
ad068eab UW |
1526 | struct tdesc_type * |
1527 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1528 | { | |
72ddacb7 | 1529 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_UNION); |
ad068eab UW |
1530 | |
1531 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1532 | return type; | |
1533 | } | |
1534 | ||
f49ff000 YQ |
1535 | /* See arch/tdesc.h. */ |
1536 | ||
f5dff777 DJ |
1537 | struct tdesc_type * |
1538 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
54157a25 | 1539 | int size) |
f5dff777 | 1540 | { |
72ddacb7 | 1541 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_FLAGS); |
f5dff777 | 1542 | |
54157a25 DE |
1543 | gdb_assert (size > 0); |
1544 | ||
81516450 | 1545 | type->u.u.size = size; |
f5dff777 DJ |
1546 | |
1547 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1548 | return type; | |
1549 | } | |
1550 | ||
81516450 DE |
1551 | struct tdesc_type * |
1552 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
1553 | int size) | |
1554 | { | |
72ddacb7 | 1555 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_ENUM); |
81516450 DE |
1556 | |
1557 | gdb_assert (size > 0); | |
1558 | ||
81516450 DE |
1559 | type->u.u.size = size; |
1560 | ||
1561 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1562 | return type; | |
1563 | } | |
1564 | ||
f49ff000 | 1565 | /* See arch/tdesc.h. */ |
f5dff777 | 1566 | |
ad068eab UW |
1567 | void |
1568 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1569 | struct tdesc_type *field_type) | |
1570 | { | |
1571 | struct tdesc_type_field f = { 0 }; | |
1572 | ||
f5dff777 DJ |
1573 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1574 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab UW |
1575 | |
1576 | f.name = xstrdup (field_name); | |
1577 | f.type = field_type; | |
81516450 DE |
1578 | /* Initialize these values so we know this is not a bit-field |
1579 | when we print-c-tdesc. */ | |
1580 | f.start = -1; | |
1581 | f.end = -1; | |
ad068eab UW |
1582 | |
1583 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1584 | } | |
1585 | ||
f5dff777 | 1586 | void |
81516450 DE |
1587 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
1588 | int start, int end, struct tdesc_type *field_type) | |
f5dff777 DJ |
1589 | { |
1590 | struct tdesc_type_field f = { 0 }; | |
1591 | ||
81516450 DE |
1592 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1593 | || type->kind == TDESC_TYPE_FLAGS); | |
1594 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 DJ |
1595 | |
1596 | f.name = xstrdup (field_name); | |
1597 | f.start = start; | |
1598 | f.end = end; | |
81516450 | 1599 | f.type = field_type; |
f5dff777 DJ |
1600 | |
1601 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1602 | } | |
1603 | ||
f49ff000 | 1604 | /* See arch/tdesc.h. */ |
81516450 DE |
1605 | |
1606 | void | |
1607 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, | |
1608 | int start, int end) | |
1609 | { | |
1610 | struct tdesc_type *field_type; | |
1611 | ||
1612 | gdb_assert (start >= 0 && end >= start); | |
1613 | ||
1614 | if (type->u.u.size > 4) | |
1615 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
1616 | else | |
1617 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1618 | ||
1619 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1620 | } | |
1621 | ||
f49ff000 | 1622 | /* See arch/tdesc.h. */ |
81516450 | 1623 | |
f5dff777 DJ |
1624 | void |
1625 | tdesc_add_flag (struct tdesc_type *type, int start, | |
1626 | const char *flag_name) | |
1627 | { | |
81516450 | 1628 | struct tdesc_type_field f = { 0 }; |
f5dff777 | 1629 | |
81516450 DE |
1630 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1631 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 DJ |
1632 | |
1633 | f.name = xstrdup (flag_name); | |
1634 | f.start = start; | |
81516450 DE |
1635 | f.end = start; |
1636 | f.type = tdesc_predefined_type (TDESC_TYPE_BOOL); | |
f5dff777 | 1637 | |
81516450 DE |
1638 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
1639 | } | |
1640 | ||
1641 | void | |
1642 | tdesc_add_enum_value (struct tdesc_type *type, int value, | |
1643 | const char *name) | |
1644 | { | |
1645 | struct tdesc_type_field f = { 0 }; | |
1646 | ||
1647 | gdb_assert (type->kind == TDESC_TYPE_ENUM); | |
1648 | ||
1649 | f.name = xstrdup (name); | |
1650 | f.start = value; | |
1651 | f.end = -1; | |
1652 | f.type = tdesc_predefined_type (TDESC_TYPE_INT32); | |
1653 | ||
1654 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
f5dff777 DJ |
1655 | } |
1656 | ||
f49ff000 YQ |
1657 | /* See arch/tdesc.h. */ |
1658 | ||
123dc839 | 1659 | struct tdesc_feature * |
0abe8a89 YQ |
1660 | tdesc_create_feature (struct target_desc *tdesc, const char *name, |
1661 | const char *xml) | |
123dc839 | 1662 | { |
72ddacb7 | 1663 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 | 1664 | |
3eea796c SM |
1665 | tdesc->features.emplace_back (new_feature); |
1666 | ||
123dc839 DJ |
1667 | return new_feature; |
1668 | } | |
1669 | ||
424163ea DJ |
1670 | struct target_desc * |
1671 | allocate_target_description (void) | |
1672 | { | |
b468ff4c | 1673 | return new target_desc (); |
424163ea | 1674 | } |
29709017 | 1675 | |
23181151 DJ |
1676 | static void |
1677 | free_target_description (void *arg) | |
1678 | { | |
19ba03f4 | 1679 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1680 | |
b468ff4c | 1681 | delete target_desc; |
23181151 DJ |
1682 | } |
1683 | ||
1684 | struct cleanup * | |
1685 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1686 | { | |
1687 | return make_cleanup (free_target_description, target_desc); | |
1688 | } | |
1689 | ||
e35359c5 UW |
1690 | void |
1691 | tdesc_add_compatible (struct target_desc *target_desc, | |
1692 | const struct bfd_arch_info *compatible) | |
1693 | { | |
e35359c5 UW |
1694 | /* If this instance of GDB is compiled without BFD support for the |
1695 | compatible architecture, simply ignore it -- we would not be able | |
1696 | to handle it anyway. */ | |
1697 | if (compatible == NULL) | |
1698 | return; | |
1699 | ||
40e2a983 | 1700 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
1701 | if (compat == compatible) |
1702 | internal_error (__FILE__, __LINE__, | |
1703 | _("Attempted to add duplicate " | |
1704 | "compatible architecture \"%s\""), | |
1705 | compatible->printable_name); | |
1706 | ||
40e2a983 | 1707 | target_desc->compatible.push_back (compatible); |
e35359c5 UW |
1708 | } |
1709 | ||
29709017 DJ |
1710 | void |
1711 | set_tdesc_property (struct target_desc *target_desc, | |
1712 | const char *key, const char *value) | |
1713 | { | |
29709017 DJ |
1714 | gdb_assert (key != NULL && value != NULL); |
1715 | ||
129c10bc SM |
1716 | if (tdesc_property (target_desc, key) != NULL) |
1717 | internal_error (__FILE__, __LINE__, | |
1718 | _("Attempted to add duplicate property \"%s\""), key); | |
29709017 | 1719 | |
129c10bc | 1720 | target_desc->properties.emplace_back (key, value); |
29709017 | 1721 | } |
23181151 | 1722 | |
5f035c07 YQ |
1723 | /* See arch/tdesc.h. */ |
1724 | ||
1725 | void | |
1726 | set_tdesc_architecture (struct target_desc *target_desc, | |
1727 | const char *name) | |
1728 | { | |
1729 | set_tdesc_architecture (target_desc, bfd_scan_arch (name)); | |
1730 | } | |
1731 | ||
23181151 DJ |
1732 | void |
1733 | set_tdesc_architecture (struct target_desc *target_desc, | |
1734 | const struct bfd_arch_info *arch) | |
1735 | { | |
1736 | target_desc->arch = arch; | |
1737 | } | |
08d16641 | 1738 | |
5f035c07 YQ |
1739 | /* See arch/tdesc.h. */ |
1740 | ||
1741 | void | |
1742 | set_tdesc_osabi (struct target_desc *target_desc, const char *name) | |
1743 | { | |
1744 | set_tdesc_osabi (target_desc, osabi_from_tdesc_string (name)); | |
1745 | } | |
1746 | ||
08d16641 PA |
1747 | void |
1748 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1749 | { | |
1750 | target_desc->osabi = osabi; | |
1751 | } | |
23181151 DJ |
1752 | \f |
1753 | ||
1754 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1755 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1756 | ||
1757 | /* Helper functions for the CLI commands. */ | |
1758 | ||
1759 | static void | |
981a3fb3 | 1760 | set_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1761 | { |
635c7e8a | 1762 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1763 | } |
1764 | ||
1765 | static void | |
981a3fb3 | 1766 | show_tdesc_cmd (const char *args, int from_tty) |
23181151 DJ |
1767 | { |
1768 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1769 | } | |
1770 | ||
1771 | static void | |
981a3fb3 | 1772 | unset_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1773 | { |
635c7e8a | 1774 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1775 | } |
1776 | ||
1777 | static void | |
eb4c3f4a | 1778 | set_tdesc_filename_cmd (const char *args, int from_tty, |
23181151 DJ |
1779 | struct cmd_list_element *c) |
1780 | { | |
6ecd4729 PA |
1781 | xfree (target_description_filename); |
1782 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1783 | ||
23181151 DJ |
1784 | target_clear_description (); |
1785 | target_find_description (); | |
1786 | } | |
1787 | ||
1788 | static void | |
1789 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1790 | struct cmd_list_element *c, | |
1791 | const char *value) | |
1792 | { | |
6ecd4729 PA |
1793 | value = target_description_filename; |
1794 | ||
23181151 | 1795 | if (value != NULL && *value != '\0') |
3e43a32a | 1796 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1797 | value); |
1798 | else | |
3e43a32a MS |
1799 | printf_filtered (_("The target description will be " |
1800 | "read from the target.\n")); | |
23181151 DJ |
1801 | } |
1802 | ||
1803 | static void | |
e100df1a | 1804 | unset_tdesc_filename_cmd (const char *args, int from_tty) |
23181151 DJ |
1805 | { |
1806 | xfree (target_description_filename); | |
1807 | target_description_filename = NULL; | |
1808 | target_clear_description (); | |
1809 | target_find_description (); | |
1810 | } | |
1811 | ||
6eb1e6a8 YQ |
1812 | /* Print target description in C. */ |
1813 | ||
1814 | class print_c_tdesc : public tdesc_element_visitor | |
1815 | { | |
1816 | public: | |
1817 | print_c_tdesc (std::string &filename_after_features) | |
1818 | : m_filename_after_features (filename_after_features) | |
1819 | { | |
1820 | const char *inp; | |
1821 | char *outp; | |
1822 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1823 | ||
1824 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1825 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1826 | if (*inp == '.') | |
1827 | break; | |
1828 | else if (*inp == '-') | |
1829 | *outp++ = '_'; | |
1830 | else | |
1831 | *outp++ = *inp; | |
1832 | *outp = '\0'; | |
1833 | ||
1834 | /* Standard boilerplate. */ | |
1835 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1836 | "-*- buffer-read-only: t -*- vi" | |
1837 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1838 | } |
1839 | ||
1840 | ~print_c_tdesc () | |
1841 | { | |
1842 | xfree (m_function); | |
1843 | } | |
1844 | ||
1845 | void visit_pre (const target_desc *e) override | |
1846 | { | |
25aa13e5 YQ |
1847 | printf_unfiltered (" Original: %s */\n\n", |
1848 | lbasename (m_filename_after_features.c_str ())); | |
1849 | ||
6eb1e6a8 YQ |
1850 | printf_unfiltered ("#include \"defs.h\"\n"); |
1851 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1852 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1853 | printf_unfiltered ("\n"); | |
1854 | ||
1855 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1856 | printf_unfiltered ("static void\n"); | |
1857 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1858 | printf_unfiltered ("{\n"); | |
1859 | printf_unfiltered | |
1860 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1861 | ||
1862 | if (tdesc_architecture (e) != NULL) | |
1863 | { | |
1864 | printf_unfiltered | |
1865 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1866 | tdesc_architecture (e)->printable_name); | |
1867 | printf_unfiltered ("\n"); | |
1868 | } | |
1869 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1870 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1871 | { | |
1872 | printf_unfiltered | |
1873 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1874 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1875 | printf_unfiltered ("\n"); | |
1876 | } | |
1877 | ||
40e2a983 SM |
1878 | for (const struct bfd_arch_info *compatible : e->compatible) |
1879 | printf_unfiltered | |
1880 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1881 | compatible->printable_name); | |
6eb1e6a8 | 1882 | |
40e2a983 | 1883 | if (!e->compatible.empty ()) |
6eb1e6a8 YQ |
1884 | printf_unfiltered ("\n"); |
1885 | ||
129c10bc SM |
1886 | for (const property &prop : e->properties) |
1887 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1888 | prop.key.c_str (), prop.value.c_str ()); | |
1889 | ||
6eb1e6a8 YQ |
1890 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
1891 | } | |
1892 | ||
25aa13e5 | 1893 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1894 | { |
1895 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
f65ff9f9 | 1896 | e->name.c_str ()); |
6eb1e6a8 YQ |
1897 | } |
1898 | ||
25aa13e5 YQ |
1899 | void visit_post (const tdesc_feature *e) override |
1900 | {} | |
1901 | ||
6eb1e6a8 YQ |
1902 | void visit_post (const target_desc *e) override |
1903 | { | |
1904 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1905 | printf_unfiltered ("}\n"); | |
1906 | } | |
1907 | ||
1908 | void visit (const tdesc_type *type) override | |
1909 | { | |
1910 | struct tdesc_type_field *f; | |
1911 | ||
1912 | /* Now we do some "filtering" in order to know which variables to | |
1913 | declare. This is needed because otherwise we would declare unused | |
1914 | variables `field_type' and `type'. */ | |
1915 | if (!m_printed_field_type) | |
1916 | { | |
1917 | printf_unfiltered (" struct tdesc_type *field_type;\n"); | |
1918 | m_printed_field_type = true; | |
1919 | } | |
1920 | ||
1921 | if ((type->kind == TDESC_TYPE_UNION | |
1922 | || type->kind == TDESC_TYPE_STRUCT | |
1923 | || type->kind == TDESC_TYPE_FLAGS | |
1924 | || type->kind == TDESC_TYPE_ENUM) | |
1925 | && VEC_length (tdesc_type_field, type->u.u.fields) > 0 | |
1926 | && !m_printed_type) | |
1927 | { | |
1928 | printf_unfiltered (" struct tdesc_type *type;\n"); | |
1929 | m_printed_type = true; | |
1930 | } | |
1931 | ||
1932 | switch (type->kind) | |
1933 | { | |
1934 | case TDESC_TYPE_VECTOR: | |
1935 | printf_unfiltered | |
1936 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
1937 | type->u.v.type->name); | |
1938 | printf_unfiltered | |
1939 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", | |
1940 | type->name, type->u.v.count); | |
1941 | break; | |
1942 | case TDESC_TYPE_STRUCT: | |
1943 | case TDESC_TYPE_FLAGS: | |
1944 | if (type->kind == TDESC_TYPE_STRUCT) | |
1945 | { | |
1946 | printf_unfiltered | |
1947 | (" type = tdesc_create_struct (feature, \"%s\");\n", | |
1948 | type->name); | |
1949 | if (type->u.u.size != 0) | |
1950 | printf_unfiltered | |
1951 | (" tdesc_set_struct_size (type, %d);\n", | |
1952 | type->u.u.size); | |
1953 | } | |
1954 | else | |
1955 | { | |
1956 | printf_unfiltered | |
1957 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", | |
1958 | type->name, type->u.u.size); | |
1959 | } | |
1960 | for (int ix3 = 0; | |
1961 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1962 | ix3++) | |
1963 | { | |
1964 | const char *type_name; | |
1965 | ||
1966 | gdb_assert (f->type != NULL); | |
1967 | type_name = f->type->name; | |
1968 | ||
1969 | /* To minimize changes to generated files, don't emit type | |
1970 | info for fields that have defaulted types. */ | |
1971 | if (f->start != -1) | |
1972 | { | |
1973 | gdb_assert (f->end != -1); | |
1974 | if (f->type->kind == TDESC_TYPE_BOOL) | |
1975 | { | |
1976 | gdb_assert (f->start == f->end); | |
1977 | printf_unfiltered | |
1978 | (" tdesc_add_flag (type, %d, \"%s\");\n", | |
1979 | f->start, f->name); | |
1980 | } | |
1981 | else if ((type->u.u.size == 4 | |
1982 | && f->type->kind == TDESC_TYPE_UINT32) | |
1983 | || (type->u.u.size == 8 | |
1984 | && f->type->kind == TDESC_TYPE_UINT64)) | |
1985 | { | |
1986 | printf_unfiltered | |
1987 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", | |
1988 | f->name, f->start, f->end); | |
1989 | } | |
1990 | else | |
1991 | { | |
1992 | printf_unfiltered | |
1993 | (" field_type = tdesc_named_type (feature," | |
1994 | " \"%s\");\n", | |
1995 | type_name); | |
1996 | printf_unfiltered | |
1997 | (" tdesc_add_typed_bitfield (type, \"%s\"," | |
1998 | " %d, %d, field_type);\n", | |
1999 | f->name, f->start, f->end); | |
2000 | } | |
2001 | } | |
2002 | else /* Not a bitfield. */ | |
2003 | { | |
2004 | gdb_assert (f->end == -1); | |
2005 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
2006 | printf_unfiltered | |
2007 | (" field_type = tdesc_named_type (feature," | |
2008 | " \"%s\");\n", | |
2009 | type_name); | |
2010 | printf_unfiltered | |
2011 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2012 | f->name); | |
2013 | } | |
2014 | } | |
2015 | break; | |
2016 | case TDESC_TYPE_UNION: | |
2017 | printf_unfiltered | |
2018 | (" type = tdesc_create_union (feature, \"%s\");\n", | |
2019 | type->name); | |
2020 | for (int ix3 = 0; | |
2021 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2022 | ix3++) | |
2023 | { | |
2024 | printf_unfiltered | |
2025 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
2026 | f->type->name); | |
2027 | printf_unfiltered | |
2028 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2029 | f->name); | |
2030 | } | |
2031 | break; | |
2032 | case TDESC_TYPE_ENUM: | |
2033 | printf_unfiltered | |
2034 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", | |
2035 | type->name, type->u.u.size); | |
2036 | for (int ix3 = 0; | |
2037 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2038 | ix3++) | |
2039 | printf_unfiltered | |
2040 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", | |
2041 | f->start, f->name); | |
2042 | break; | |
2043 | default: | |
2044 | error (_("C output is not supported type \"%s\"."), type->name); | |
2045 | } | |
2046 | printf_unfiltered ("\n"); | |
2047 | } | |
2048 | ||
2049 | void visit (const tdesc_reg *reg) override | |
2050 | { | |
2051 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
a8142ee1 SM |
2052 | reg->name.c_str (), reg->target_regnum, |
2053 | reg->save_restore); | |
2054 | if (!reg->group.empty ()) | |
2055 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
6eb1e6a8 YQ |
2056 | else |
2057 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 2058 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
6eb1e6a8 YQ |
2059 | } |
2060 | ||
25aa13e5 YQ |
2061 | protected: |
2062 | std::string m_filename_after_features; | |
2063 | ||
6eb1e6a8 YQ |
2064 | private: |
2065 | char *m_function; | |
6eb1e6a8 YQ |
2066 | bool m_printed_field_type = false; |
2067 | bool m_printed_type = false; | |
2068 | }; | |
2069 | ||
25aa13e5 YQ |
2070 | /* Print target description feature in C. */ |
2071 | ||
2072 | class print_c_feature : public print_c_tdesc | |
2073 | { | |
2074 | public: | |
2075 | print_c_feature (std::string &file) | |
2076 | : print_c_tdesc (file) | |
2077 | { | |
2078 | /* Trim ".tmp". */ | |
2079 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
2080 | ||
2081 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
2082 | } | |
2083 | ||
2084 | void visit_pre (const target_desc *e) override | |
2085 | { | |
2086 | printf_unfiltered (" Original: %s */\n\n", | |
2087 | lbasename (m_filename_after_features.c_str ())); | |
2088 | ||
f49ff000 | 2089 | printf_unfiltered ("#include \"arch/tdesc.h\"\n"); |
25aa13e5 YQ |
2090 | printf_unfiltered ("\n"); |
2091 | } | |
2092 | ||
2093 | void visit_post (const target_desc *e) override | |
2094 | {} | |
2095 | ||
2096 | void visit_pre (const tdesc_feature *e) override | |
2097 | { | |
2098 | std::string name (m_filename_after_features); | |
2099 | ||
2100 | auto pos = name.find_first_of ('.'); | |
2101 | ||
2102 | name = name.substr (0, pos); | |
2103 | std::replace (name.begin (), name.end (), '/', '_'); | |
2104 | std::replace (name.begin (), name.end (), '-', '_'); | |
2105 | ||
2106 | printf_unfiltered ("static int\n"); | |
2107 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
2108 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
2109 | ||
2110 | printf_unfiltered ("{\n"); | |
2111 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
0abe8a89 YQ |
2112 | |
2113 | printf_unfiltered | |
2114 | ("\n feature = tdesc_create_feature (result, \"%s\", \"%s\");\n", | |
f65ff9f9 | 2115 | e->name.c_str (), lbasename (m_filename_after_features.c_str ())); |
25aa13e5 YQ |
2116 | } |
2117 | ||
2118 | void visit_post (const tdesc_feature *e) override | |
2119 | { | |
2120 | printf_unfiltered (" return regnum;\n"); | |
2121 | printf_unfiltered ("}\n"); | |
2122 | } | |
2123 | ||
2124 | void visit (const tdesc_reg *reg) override | |
2125 | { | |
ea03d0d3 YQ |
2126 | /* Most "reg" in XML target descriptions don't have "regnum" |
2127 | attribute, so the register number is allocated sequentially. | |
2128 | In case that reg has "regnum" attribute, register number | |
2129 | should be set by that explicitly. */ | |
2130 | ||
2131 | if (reg->target_regnum < m_next_regnum) | |
2132 | { | |
2133 | /* The integrity check, it can catch some errors on register | |
2134 | number collision, like this, | |
2135 | ||
2136 | <reg name="x0" bitsize="32"/> | |
2137 | <reg name="x1" bitsize="32"/> | |
2138 | <reg name="x2" bitsize="32"/> | |
2139 | <reg name="x3" bitsize="32"/> | |
2140 | <reg name="ps" bitsize="32" regnum="3"/> | |
2141 | ||
2142 | but it also has false negatives. The target description | |
2143 | below is correct, | |
2144 | ||
2145 | <reg name="x1" bitsize="32" regnum="1"/> | |
2146 | <reg name="x3" bitsize="32" regnum="3"/> | |
2147 | <reg name="x2" bitsize="32" regnum="2"/> | |
2148 | <reg name="x4" bitsize="32" regnum="4"/> | |
2149 | ||
2150 | but it is not a good practice, so still error on this, | |
2151 | and also print the message so that it can be saved in the | |
2152 | generated c file. */ | |
2153 | ||
2154 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
2155 | reg->target_regnum); | |
2156 | printf_unfiltered ("is not the largest number (%d).\n", | |
2157 | m_next_regnum); | |
2158 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
2159 | reg->target_regnum, m_next_regnum); | |
2160 | } | |
2161 | ||
2162 | if (reg->target_regnum > m_next_regnum) | |
2163 | { | |
2164 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
2165 | m_next_regnum = reg->target_regnum; | |
2166 | } | |
2167 | ||
25aa13e5 | 2168 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
a8142ee1 SM |
2169 | reg->name.c_str (), reg->save_restore); |
2170 | if (!reg->group.empty ()) | |
2171 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
25aa13e5 YQ |
2172 | else |
2173 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 2174 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
ea03d0d3 YQ |
2175 | |
2176 | m_next_regnum++; | |
25aa13e5 YQ |
2177 | } |
2178 | ||
ea03d0d3 YQ |
2179 | private: |
2180 | /* The register number to use for the next register we see. */ | |
2181 | int m_next_regnum = 0; | |
25aa13e5 YQ |
2182 | }; |
2183 | ||
81adfced | 2184 | static void |
e100df1a | 2185 | maint_print_c_tdesc_cmd (const char *args, int from_tty) |
81adfced DJ |
2186 | { |
2187 | const struct target_desc *tdesc; | |
6eb1e6a8 | 2188 | const char *filename; |
81adfced | 2189 | |
8e2141c6 YQ |
2190 | if (args == NULL) |
2191 | { | |
2192 | /* Use the global target-supplied description, not the current | |
2193 | architecture's. This lets a GDB for one architecture generate C | |
2194 | for another architecture's description, even though the gdbarch | |
2195 | initialization code will reject the new description. */ | |
2196 | tdesc = current_target_desc; | |
2197 | filename = target_description_filename; | |
2198 | } | |
2199 | else | |
2200 | { | |
2201 | /* Use the target description from the XML file. */ | |
2202 | filename = args; | |
2203 | tdesc = file_read_description_xml (filename); | |
2204 | } | |
2205 | ||
81adfced DJ |
2206 | if (tdesc == NULL) |
2207 | error (_("There is no target description to print.")); | |
2208 | ||
8e2141c6 | 2209 | if (filename == NULL) |
81adfced DJ |
2210 | error (_("The current target description did not come from an XML file.")); |
2211 | ||
6eb1e6a8 YQ |
2212 | std::string filename_after_features (filename); |
2213 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 2214 | |
6eb1e6a8 YQ |
2215 | if (loc != std::string::npos) |
2216 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 2217 | |
25aa13e5 YQ |
2218 | /* Print c files for target features instead of target descriptions, |
2219 | because c files got from target features are more flexible than the | |
2220 | counterparts. */ | |
6c73f67f YQ |
2221 | if (startswith (filename_after_features.c_str (), "i386/32bit-") |
2222 | || startswith (filename_after_features.c_str (), "i386/64bit-") | |
506fe5f4 | 2223 | || startswith (filename_after_features.c_str (), "i386/x32-core.xml") |
49bdb7ee AH |
2224 | || startswith (filename_after_features.c_str (), "tic6x-") |
2225 | || startswith (filename_after_features.c_str (), "aarch64")) | |
25aa13e5 YQ |
2226 | { |
2227 | print_c_feature v (filename_after_features); | |
81adfced | 2228 | |
25aa13e5 YQ |
2229 | tdesc->accept (v); |
2230 | } | |
2231 | else | |
2232 | { | |
2233 | print_c_tdesc v (filename_after_features); | |
2234 | ||
2235 | tdesc->accept (v); | |
2236 | } | |
81adfced DJ |
2237 | } |
2238 | ||
27d41eac YQ |
2239 | namespace selftests { |
2240 | ||
2241 | static std::vector<std::pair<const char*, const target_desc *>> xml_tdesc; | |
2242 | ||
2243 | #if GDB_SELF_TEST | |
2244 | ||
2245 | /* See target-descritpions.h. */ | |
2246 | ||
2247 | void | |
2248 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
2249 | { | |
2250 | xml_tdesc.emplace_back (xml_file, tdesc); | |
2251 | } | |
2252 | #endif | |
2253 | ||
2254 | } | |
2255 | ||
2256 | /* Check that the target descriptions created dynamically by | |
2257 | architecture-specific code equal the descriptions created from XML files | |
2258 | found in the specified directory DIR. */ | |
2259 | ||
2260 | static void | |
e100df1a | 2261 | maintenance_check_xml_descriptions (const char *dir, int from_tty) |
27d41eac YQ |
2262 | { |
2263 | if (dir == NULL) | |
2264 | error (_("Missing dir name")); | |
2265 | ||
2266 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
2267 | std::string feature_dir (dir1.get ()); | |
2268 | unsigned int failed = 0; | |
2269 | ||
2270 | for (auto const &e : selftests::xml_tdesc) | |
2271 | { | |
2272 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.first); | |
2273 | const target_desc *tdesc | |
2274 | = file_read_description_xml (tdesc_xml.data ()); | |
2275 | ||
2276 | if (tdesc == NULL || *tdesc != *e.second) | |
2277 | failed++; | |
2278 | } | |
2279 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
2280 | (long) selftests::xml_tdesc.size (), failed); | |
2281 | } | |
2282 | ||
23181151 DJ |
2283 | void |
2284 | _initialize_target_descriptions (void) | |
2285 | { | |
123dc839 DJ |
2286 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
2287 | ||
23181151 DJ |
2288 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
2289 | Set target description specific variables."), | |
2290 | &tdesc_set_cmdlist, "set tdesc ", | |
2291 | 0 /* allow-unknown */, &setlist); | |
2292 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
2293 | Show target description specific variables."), | |
2294 | &tdesc_show_cmdlist, "show tdesc ", | |
2295 | 0 /* allow-unknown */, &showlist); | |
2296 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2297 | Unset target description specific variables."), | |
2298 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2299 | 0 /* allow-unknown */, &unsetlist); | |
2300 | ||
2301 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2302 | &tdesc_filename_cmd_string, |
23181151 DJ |
2303 | _("\ |
2304 | Set the file to read for an XML target description"), _("\ | |
2305 | Show the file to read for an XML target description"), _("\ | |
2306 | When set, GDB will read the target description from a local\n\ | |
2307 | file instead of querying the remote target."), | |
2308 | set_tdesc_filename_cmd, | |
2309 | show_tdesc_filename_cmd, | |
2310 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2311 | ||
2312 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2313 | Unset the file to read for an XML target description. When unset,\n\ | |
2314 | GDB will read the description from the target."), | |
2315 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2316 | |
2317 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2318 | Print the current target description as a C source file."), | |
2319 | &maintenanceprintlist); | |
27d41eac YQ |
2320 | |
2321 | cmd_list_element *cmd; | |
2322 | ||
2323 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
2324 | maintenance_check_xml_descriptions, _("\ | |
2325 | Check the target descriptions created in GDB equal the descriptions\n\ | |
2326 | created from XML files in the directory.\n\ | |
2327 | The parameter is the directory name."), | |
2328 | &maintenancechecklist); | |
2329 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 2330 | } |