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 | ||
6eb1e6a8 | 76 | typedef struct tdesc_reg : tdesc_element |
123dc839 | 77 | { |
72ddacb7 YQ |
78 | tdesc_reg (struct tdesc_feature *feature, const char *name_, |
79 | int regnum, int save_restore_, const char *group_, | |
80 | int bitsize_, const char *type_) | |
81 | : name (xstrdup (name_)), target_regnum (regnum), | |
82 | save_restore (save_restore_), | |
83 | group (group_ != NULL ? xstrdup (group_) : NULL), | |
84 | bitsize (bitsize_), | |
85 | type (type_ != NULL ? xstrdup (type_) : xstrdup ("<unknown>")) | |
86 | { | |
87 | /* If the register's type is target-defined, look it up now. We may not | |
88 | have easy access to the containing feature when we want it later. */ | |
89 | tdesc_type = tdesc_named_type (feature, type); | |
90 | } | |
91 | ||
6eb1e6a8 | 92 | virtual ~tdesc_reg () |
72ddacb7 YQ |
93 | { |
94 | xfree (name); | |
95 | xfree (type); | |
96 | xfree (group); | |
97 | } | |
98 | ||
d6541620 | 99 | DISABLE_COPY_AND_ASSIGN (tdesc_reg); |
72ddacb7 | 100 | |
123dc839 DJ |
101 | /* The name of this register. In standard features, it may be |
102 | recognized by the architecture support code, or it may be purely | |
103 | for the user. */ | |
104 | char *name; | |
105 | ||
106 | /* The register number used by this target to refer to this | |
107 | register. This is used for remote p/P packets and to determine | |
108 | the ordering of registers in the remote g/G packets. */ | |
109 | long target_regnum; | |
110 | ||
111 | /* If this flag is set, GDB should save and restore this register | |
112 | around calls to an inferior function. */ | |
113 | int save_restore; | |
114 | ||
115 | /* The name of the register group containing this register, or NULL | |
116 | if the group should be automatically determined from the | |
117 | register's type. If this is "general", "float", or "vector", the | |
118 | corresponding "info" command should display this register's | |
119 | value. It can be an arbitrary string, but should be limited to | |
120 | alphanumeric characters and internal hyphens. Currently other | |
121 | strings are ignored (treated as NULL). */ | |
122 | char *group; | |
123 | ||
124 | /* The size of the register, in bits. */ | |
125 | int bitsize; | |
126 | ||
127 | /* The type of the register. This string corresponds to either | |
128 | a named type from the target description or a predefined | |
129 | type from GDB. */ | |
130 | char *type; | |
131 | ||
132 | /* The target-described type corresponding to TYPE, if found. */ | |
ad068eab | 133 | struct tdesc_type *tdesc_type; |
6eb1e6a8 YQ |
134 | |
135 | void accept (tdesc_element_visitor &v) const override | |
136 | { | |
137 | v.visit (this); | |
138 | } | |
139 | ||
27d41eac YQ |
140 | bool operator== (const tdesc_reg &other) const |
141 | { | |
142 | return (streq (name, other.name) | |
143 | && target_regnum == other.target_regnum | |
144 | && save_restore == other.save_restore | |
145 | && bitsize == other.bitsize | |
146 | && (group == other.group || streq (group, other.group)) | |
147 | && streq (type, other.type)); | |
148 | } | |
149 | ||
150 | bool operator!= (const tdesc_reg &other) const | |
151 | { | |
152 | return !(*this == other); | |
153 | } | |
123dc839 DJ |
154 | } *tdesc_reg_p; |
155 | DEF_VEC_P(tdesc_reg_p); | |
156 | ||
157 | /* A named type from a target description. */ | |
ad068eab UW |
158 | |
159 | typedef struct tdesc_type_field | |
160 | { | |
161 | char *name; | |
162 | struct tdesc_type *type; | |
81516450 DE |
163 | /* For non-enum-values, either both are -1 (non-bitfield), or both are |
164 | not -1 (bitfield). For enum values, start is the value (which could be | |
165 | -1), end is -1. */ | |
f5dff777 | 166 | int start, end; |
ad068eab UW |
167 | } tdesc_type_field; |
168 | DEF_VEC_O(tdesc_type_field); | |
169 | ||
52059ffd TT |
170 | enum tdesc_type_kind |
171 | { | |
172 | /* Predefined types. */ | |
81516450 | 173 | TDESC_TYPE_BOOL, |
52059ffd TT |
174 | TDESC_TYPE_INT8, |
175 | TDESC_TYPE_INT16, | |
176 | TDESC_TYPE_INT32, | |
177 | TDESC_TYPE_INT64, | |
178 | TDESC_TYPE_INT128, | |
179 | TDESC_TYPE_UINT8, | |
180 | TDESC_TYPE_UINT16, | |
181 | TDESC_TYPE_UINT32, | |
182 | TDESC_TYPE_UINT64, | |
183 | TDESC_TYPE_UINT128, | |
184 | TDESC_TYPE_CODE_PTR, | |
185 | TDESC_TYPE_DATA_PTR, | |
186 | TDESC_TYPE_IEEE_SINGLE, | |
187 | TDESC_TYPE_IEEE_DOUBLE, | |
188 | TDESC_TYPE_ARM_FPA_EXT, | |
189 | TDESC_TYPE_I387_EXT, | |
190 | ||
191 | /* Types defined by a target feature. */ | |
192 | TDESC_TYPE_VECTOR, | |
193 | TDESC_TYPE_STRUCT, | |
194 | TDESC_TYPE_UNION, | |
81516450 DE |
195 | TDESC_TYPE_FLAGS, |
196 | TDESC_TYPE_ENUM | |
52059ffd TT |
197 | }; |
198 | ||
6eb1e6a8 | 199 | typedef struct tdesc_type : tdesc_element |
ad068eab | 200 | { |
72ddacb7 YQ |
201 | tdesc_type (const char *name_, enum tdesc_type_kind kind_) |
202 | : name (xstrdup (name_)), kind (kind_) | |
203 | { | |
204 | memset (&u, 0, sizeof (u)); | |
205 | } | |
206 | ||
6eb1e6a8 | 207 | virtual ~tdesc_type () |
72ddacb7 YQ |
208 | { |
209 | switch (kind) | |
210 | { | |
211 | case TDESC_TYPE_STRUCT: | |
212 | case TDESC_TYPE_UNION: | |
213 | case TDESC_TYPE_FLAGS: | |
214 | case TDESC_TYPE_ENUM: | |
215 | { | |
216 | struct tdesc_type_field *f; | |
217 | int ix; | |
218 | ||
219 | for (ix = 0; | |
220 | VEC_iterate (tdesc_type_field, u.u.fields, ix, f); | |
221 | ix++) | |
222 | xfree (f->name); | |
223 | ||
224 | VEC_free (tdesc_type_field, u.u.fields); | |
225 | } | |
226 | break; | |
227 | ||
228 | default: | |
229 | break; | |
230 | } | |
231 | xfree ((char *) name); | |
232 | } | |
d6541620 YQ |
233 | |
234 | DISABLE_COPY_AND_ASSIGN (tdesc_type); | |
72ddacb7 | 235 | |
a121b7c1 PA |
236 | /* The name of this type. If this type is a built-in type, this is |
237 | a pointer to a constant string. Otherwise, it's a | |
238 | malloc-allocated string (and thus must be freed). */ | |
239 | const char *name; | |
ad068eab UW |
240 | |
241 | /* Identify the kind of this type. */ | |
52059ffd | 242 | enum tdesc_type_kind kind; |
ad068eab UW |
243 | |
244 | /* Kind-specific data. */ | |
245 | union | |
246 | { | |
247 | /* Vector type. */ | |
248 | struct | |
249 | { | |
250 | struct tdesc_type *type; | |
251 | int count; | |
252 | } v; | |
253 | ||
81516450 | 254 | /* Struct, union, flags, or enum type. */ |
ad068eab UW |
255 | struct |
256 | { | |
257 | VEC(tdesc_type_field) *fields; | |
54157a25 | 258 | int size; |
ad068eab UW |
259 | } u; |
260 | } u; | |
6eb1e6a8 YQ |
261 | |
262 | void accept (tdesc_element_visitor &v) const override | |
263 | { | |
264 | v.visit (this); | |
265 | } | |
266 | ||
27d41eac YQ |
267 | bool operator== (const tdesc_type &other) const |
268 | { | |
269 | return (streq (name, other.name) && kind == other.kind); | |
270 | } | |
271 | ||
272 | bool operator!= (const tdesc_type &other) const | |
273 | { | |
274 | return !(*this == other); | |
275 | } | |
ad068eab UW |
276 | } *tdesc_type_p; |
277 | DEF_VEC_P(tdesc_type_p); | |
123dc839 DJ |
278 | |
279 | /* A feature from a target description. Each feature is a collection | |
280 | of other elements, e.g. registers and types. */ | |
281 | ||
6eb1e6a8 | 282 | typedef struct tdesc_feature : tdesc_element |
123dc839 | 283 | { |
72ddacb7 YQ |
284 | tdesc_feature (const char *name_) |
285 | : name (xstrdup (name_)) | |
286 | {} | |
287 | ||
6eb1e6a8 | 288 | virtual ~tdesc_feature () |
72ddacb7 YQ |
289 | { |
290 | struct tdesc_reg *reg; | |
291 | struct tdesc_type *type; | |
292 | int ix; | |
293 | ||
294 | for (ix = 0; VEC_iterate (tdesc_reg_p, registers, ix, reg); ix++) | |
295 | delete reg; | |
296 | VEC_free (tdesc_reg_p, registers); | |
297 | ||
298 | for (ix = 0; VEC_iterate (tdesc_type_p, types, ix, type); ix++) | |
299 | delete type; | |
300 | VEC_free (tdesc_type_p, types); | |
301 | ||
302 | xfree (name); | |
303 | } | |
304 | ||
d6541620 | 305 | DISABLE_COPY_AND_ASSIGN (tdesc_feature); |
72ddacb7 | 306 | |
123dc839 DJ |
307 | /* The name of this feature. It may be recognized by the architecture |
308 | support code. */ | |
309 | char *name; | |
310 | ||
311 | /* The registers associated with this feature. */ | |
72ddacb7 | 312 | VEC(tdesc_reg_p) *registers = NULL; |
123dc839 DJ |
313 | |
314 | /* The types associated with this feature. */ | |
72ddacb7 | 315 | VEC(tdesc_type_p) *types = NULL; |
6eb1e6a8 YQ |
316 | |
317 | void accept (tdesc_element_visitor &v) const override | |
318 | { | |
25aa13e5 | 319 | v.visit_pre (this); |
6eb1e6a8 YQ |
320 | |
321 | struct tdesc_type *type; | |
322 | ||
323 | for (int ix = 0; | |
324 | VEC_iterate (tdesc_type_p, types, ix, type); | |
325 | ix++) | |
326 | type->accept (v); | |
327 | ||
328 | struct tdesc_reg *reg; | |
329 | ||
330 | for (int ix = 0; | |
331 | VEC_iterate (tdesc_reg_p, registers, ix, reg); | |
332 | ix++) | |
333 | reg->accept (v); | |
334 | ||
6eb1e6a8 | 335 | |
25aa13e5 YQ |
336 | v.visit_post (this); |
337 | } | |
27d41eac YQ |
338 | |
339 | bool operator== (const tdesc_feature &other) const | |
340 | { | |
341 | if (strcmp (name, other.name) != 0) | |
342 | return false; | |
343 | ||
344 | if (VEC_length (tdesc_reg_p, registers) | |
345 | != VEC_length (tdesc_reg_p, other.registers)) | |
346 | return false; | |
347 | ||
348 | struct tdesc_reg *reg; | |
349 | ||
350 | for (int ix = 0; | |
351 | VEC_iterate (tdesc_reg_p, registers, ix, reg); | |
352 | ix++) | |
353 | { | |
354 | tdesc_reg *reg2 | |
355 | = VEC_index (tdesc_reg_p, other.registers, ix); | |
356 | ||
357 | if (reg != reg2 && *reg != *reg2) | |
358 | return false; | |
359 | } | |
360 | ||
361 | if (VEC_length (tdesc_type_p, types) | |
362 | != VEC_length (tdesc_type_p, other.types)) | |
363 | return false; | |
364 | ||
365 | tdesc_type *type; | |
366 | ||
367 | for (int ix = 0; | |
368 | VEC_iterate (tdesc_type_p, types, ix, type); | |
369 | ix++) | |
370 | { | |
371 | tdesc_type *type2 | |
372 | = VEC_index (tdesc_type_p, other.types, ix); | |
373 | ||
374 | if (type != type2 && *type != *type2) | |
375 | return false; | |
376 | } | |
377 | ||
378 | return true; | |
379 | } | |
380 | ||
381 | bool operator!= (const tdesc_feature &other) const | |
382 | { | |
383 | return !(*this == other); | |
384 | } | |
385 | ||
123dc839 DJ |
386 | } *tdesc_feature_p; |
387 | DEF_VEC_P(tdesc_feature_p); | |
388 | ||
e35359c5 UW |
389 | /* A compatible architecture from a target description. */ |
390 | typedef const struct bfd_arch_info *arch_p; | |
391 | DEF_VEC_P(arch_p); | |
392 | ||
123dc839 DJ |
393 | /* A target description. */ |
394 | ||
6eb1e6a8 | 395 | struct target_desc : tdesc_element |
424163ea | 396 | { |
b468ff4c YQ |
397 | target_desc () |
398 | {} | |
399 | ||
6eb1e6a8 | 400 | virtual ~target_desc () |
b468ff4c YQ |
401 | { |
402 | struct tdesc_feature *feature; | |
b468ff4c YQ |
403 | int ix; |
404 | ||
405 | for (ix = 0; | |
406 | VEC_iterate (tdesc_feature_p, features, ix, feature); | |
407 | ix++) | |
408 | delete feature; | |
409 | VEC_free (tdesc_feature_p, features); | |
410 | ||
b468ff4c YQ |
411 | VEC_free (arch_p, compatible); |
412 | } | |
413 | ||
414 | target_desc (const target_desc &) = delete; | |
415 | void operator= (const target_desc &) = delete; | |
416 | ||
23181151 | 417 | /* The architecture reported by the target, if any. */ |
b468ff4c | 418 | const struct bfd_arch_info *arch = NULL; |
23181151 | 419 | |
08d16641 PA |
420 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
421 | otherwise. */ | |
b468ff4c | 422 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 423 | |
e35359c5 | 424 | /* The list of compatible architectures reported by the target. */ |
b468ff4c | 425 | VEC(arch_p) *compatible = NULL; |
e35359c5 | 426 | |
29709017 | 427 | /* Any architecture-specific properties specified by the target. */ |
129c10bc | 428 | std::vector<property> properties; |
123dc839 DJ |
429 | |
430 | /* The features associated with this target. */ | |
b468ff4c | 431 | VEC(tdesc_feature_p) *features = NULL; |
6eb1e6a8 YQ |
432 | |
433 | void accept (tdesc_element_visitor &v) const override | |
434 | { | |
435 | v.visit_pre (this); | |
436 | ||
437 | struct tdesc_feature *feature; | |
438 | ||
439 | for (int ix = 0; | |
440 | VEC_iterate (tdesc_feature_p, features, ix, feature); | |
441 | ix++) | |
442 | feature->accept (v); | |
443 | ||
444 | v.visit_post (this); | |
445 | } | |
27d41eac YQ |
446 | |
447 | bool operator== (const target_desc &other) const | |
448 | { | |
449 | if (arch != other.arch) | |
450 | return false; | |
451 | ||
452 | if (osabi != other.osabi) | |
453 | return false; | |
454 | ||
455 | if (VEC_length (tdesc_feature_p, features) | |
456 | != VEC_length (tdesc_feature_p, other.features)) | |
457 | return false; | |
458 | ||
459 | struct tdesc_feature *feature; | |
460 | ||
461 | for (int ix = 0; | |
462 | VEC_iterate (tdesc_feature_p, features, ix, feature); | |
463 | ix++) | |
464 | { | |
465 | struct tdesc_feature *feature2 | |
466 | = VEC_index (tdesc_feature_p, other.features, ix); | |
467 | ||
468 | if (feature != feature2 && *feature != *feature2) | |
469 | return false; | |
470 | } | |
471 | ||
472 | return true; | |
473 | } | |
474 | ||
475 | bool operator!= (const target_desc &other) const | |
476 | { | |
477 | return !(*this == other); | |
478 | } | |
123dc839 DJ |
479 | }; |
480 | ||
481 | /* Per-architecture data associated with a target description. The | |
482 | target description may be shared by multiple architectures, but | |
483 | this data is private to one gdbarch. */ | |
484 | ||
ad068eab UW |
485 | typedef struct tdesc_arch_reg |
486 | { | |
487 | struct tdesc_reg *reg; | |
488 | struct type *type; | |
489 | } tdesc_arch_reg; | |
490 | DEF_VEC_O(tdesc_arch_reg); | |
491 | ||
123dc839 DJ |
492 | struct tdesc_arch_data |
493 | { | |
ad068eab | 494 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
495 | During initialization of the gdbarch this list is used to store |
496 | registers which the architecture assigns a fixed register number. | |
497 | Registers which are NULL in this array, or off the end, are | |
498 | treated as zero-sized and nameless (i.e. placeholders in the | |
499 | numbering). */ | |
ad068eab | 500 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
501 | |
502 | /* Functions which report the register name, type, and reggroups for | |
503 | pseudo-registers. */ | |
504 | gdbarch_register_name_ftype *pseudo_register_name; | |
505 | gdbarch_register_type_ftype *pseudo_register_type; | |
506 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
507 | }; |
508 | ||
6ecd4729 PA |
509 | /* Info about an inferior's target description. There's one of these |
510 | for each inferior. */ | |
424163ea | 511 | |
6ecd4729 PA |
512 | struct target_desc_info |
513 | { | |
514 | /* A flag indicating that a description has already been fetched | |
515 | from the target, so it should not be queried again. */ | |
516 | ||
517 | int fetched; | |
424163ea | 518 | |
6ecd4729 PA |
519 | /* The description fetched from the target, or NULL if the target |
520 | did not supply any description. Only valid when | |
521 | target_desc_fetched is set. Only the description initialization | |
522 | code should access this; normally, the description should be | |
523 | accessed through the gdbarch object. */ | |
424163ea | 524 | |
6ecd4729 | 525 | const struct target_desc *tdesc; |
424163ea | 526 | |
6ecd4729 PA |
527 | /* The filename to read a target description from, as set by "set |
528 | tdesc filename ..." */ | |
424163ea | 529 | |
6ecd4729 PA |
530 | char *filename; |
531 | }; | |
23181151 | 532 | |
6ecd4729 PA |
533 | /* Get the inferior INF's target description info, allocating one on |
534 | the stop if necessary. */ | |
23181151 | 535 | |
6ecd4729 PA |
536 | static struct target_desc_info * |
537 | get_tdesc_info (struct inferior *inf) | |
538 | { | |
539 | if (inf->tdesc_info == NULL) | |
540 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
541 | return inf->tdesc_info; | |
542 | } | |
23181151 | 543 | |
123dc839 DJ |
544 | /* A handle for architecture-specific data associated with the |
545 | target description (see struct tdesc_arch_data). */ | |
546 | ||
547 | static struct gdbarch_data *tdesc_data; | |
548 | ||
6ecd4729 PA |
549 | /* See target-descriptions.h. */ |
550 | ||
551 | int | |
552 | target_desc_info_from_user_p (struct target_desc_info *info) | |
553 | { | |
554 | return info != NULL && info->filename != NULL; | |
555 | } | |
556 | ||
557 | /* See target-descriptions.h. */ | |
558 | ||
559 | void | |
560 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
561 | { | |
562 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
563 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
564 | ||
565 | dest->fetched = src->fetched; | |
566 | dest->tdesc = src->tdesc; | |
567 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
568 | } | |
569 | ||
570 | /* See target-descriptions.h. */ | |
571 | ||
572 | void | |
573 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
574 | { | |
575 | if (tdesc_info != NULL) | |
576 | { | |
577 | xfree (tdesc_info->filename); | |
578 | xfree (tdesc_info); | |
579 | } | |
580 | } | |
581 | ||
582 | /* Convenience helper macros. */ | |
583 | ||
584 | #define target_desc_fetched \ | |
585 | get_tdesc_info (current_inferior ())->fetched | |
586 | #define current_target_desc \ | |
587 | get_tdesc_info (current_inferior ())->tdesc | |
588 | #define target_description_filename \ | |
589 | get_tdesc_info (current_inferior ())->filename | |
590 | ||
591 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
592 | ||
593 | static char *tdesc_filename_cmd_string; | |
594 | ||
424163ea DJ |
595 | /* Fetch the current target's description, and switch the current |
596 | architecture to one which incorporates that description. */ | |
597 | ||
598 | void | |
599 | target_find_description (void) | |
600 | { | |
601 | /* If we've already fetched a description from the target, don't do | |
602 | it again. This allows a target to fetch the description early, | |
603 | during its to_open or to_create_inferior, if it needs extra | |
604 | information about the target to initialize. */ | |
605 | if (target_desc_fetched) | |
606 | return; | |
607 | ||
608 | /* The current architecture should not have any target description | |
609 | specified. It should have been cleared, e.g. when we | |
610 | disconnected from the previous target. */ | |
f5656ead | 611 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 612 | |
23181151 DJ |
613 | /* First try to fetch an XML description from the user-specified |
614 | file. */ | |
615 | current_target_desc = NULL; | |
616 | if (target_description_filename != NULL | |
617 | && *target_description_filename != '\0') | |
618 | current_target_desc | |
619 | = file_read_description_xml (target_description_filename); | |
620 | ||
621 | /* Next try to read the description from the current target using | |
622 | target objects. */ | |
623 | if (current_target_desc == NULL) | |
624 | current_target_desc = target_read_description_xml (¤t_target); | |
625 | ||
626 | /* If that failed try a target-specific hook. */ | |
627 | if (current_target_desc == NULL) | |
628 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
629 | |
630 | /* If a non-NULL description was returned, then update the current | |
631 | architecture. */ | |
632 | if (current_target_desc) | |
633 | { | |
634 | struct gdbarch_info info; | |
635 | ||
636 | gdbarch_info_init (&info); | |
637 | info.target_desc = current_target_desc; | |
638 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
639 | warning (_("Architecture rejected target-supplied description")); |
640 | else | |
641 | { | |
642 | struct tdesc_arch_data *data; | |
643 | ||
19ba03f4 SM |
644 | data = ((struct tdesc_arch_data *) |
645 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 646 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 647 | && data->arch_regs == NULL) |
123dc839 DJ |
648 | warning (_("Target-supplied registers are not supported " |
649 | "by the current architecture")); | |
650 | } | |
424163ea DJ |
651 | } |
652 | ||
653 | /* Now that we know this description is usable, record that we | |
654 | fetched it. */ | |
655 | target_desc_fetched = 1; | |
656 | } | |
657 | ||
658 | /* Discard any description fetched from the current target, and switch | |
659 | the current architecture to one with no target description. */ | |
660 | ||
661 | void | |
662 | target_clear_description (void) | |
663 | { | |
664 | struct gdbarch_info info; | |
665 | ||
666 | if (!target_desc_fetched) | |
667 | return; | |
668 | ||
669 | target_desc_fetched = 0; | |
670 | current_target_desc = NULL; | |
671 | ||
672 | gdbarch_info_init (&info); | |
673 | if (!gdbarch_update_p (info)) | |
674 | internal_error (__FILE__, __LINE__, | |
675 | _("Could not remove target-supplied description")); | |
676 | } | |
677 | ||
678 | /* Return the global current target description. This should only be | |
679 | used by gdbarch initialization code; most access should be through | |
680 | an existing gdbarch. */ | |
681 | ||
682 | const struct target_desc * | |
683 | target_current_description (void) | |
684 | { | |
685 | if (target_desc_fetched) | |
686 | return current_target_desc; | |
687 | ||
688 | return NULL; | |
689 | } | |
e35359c5 UW |
690 | |
691 | /* Return non-zero if this target description is compatible | |
692 | with the given BFD architecture. */ | |
693 | ||
694 | int | |
695 | tdesc_compatible_p (const struct target_desc *target_desc, | |
696 | const struct bfd_arch_info *arch) | |
697 | { | |
698 | const struct bfd_arch_info *compat; | |
699 | int ix; | |
700 | ||
701 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
702 | ix++) | |
703 | { | |
704 | if (compat == arch | |
705 | || arch->compatible (arch, compat) | |
706 | || compat->compatible (compat, arch)) | |
707 | return 1; | |
708 | } | |
709 | ||
710 | return 0; | |
711 | } | |
23181151 DJ |
712 | \f |
713 | ||
123dc839 | 714 | /* Direct accessors for target descriptions. */ |
424163ea | 715 | |
29709017 DJ |
716 | /* Return the string value of a property named KEY, or NULL if the |
717 | property was not specified. */ | |
718 | ||
719 | const char * | |
720 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
721 | { | |
129c10bc SM |
722 | for (const property &prop : target_desc->properties) |
723 | if (prop.key == key) | |
724 | return prop.value.c_str (); | |
29709017 DJ |
725 | |
726 | return NULL; | |
727 | } | |
728 | ||
23181151 DJ |
729 | /* Return the BFD architecture associated with this target |
730 | description, or NULL if no architecture was specified. */ | |
731 | ||
732 | const struct bfd_arch_info * | |
733 | tdesc_architecture (const struct target_desc *target_desc) | |
734 | { | |
735 | return target_desc->arch; | |
736 | } | |
08d16641 PA |
737 | |
738 | /* Return the OSABI associated with this target description, or | |
739 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
740 | ||
741 | enum gdb_osabi | |
742 | tdesc_osabi (const struct target_desc *target_desc) | |
743 | { | |
744 | return target_desc->osabi; | |
745 | } | |
746 | ||
23181151 DJ |
747 | \f |
748 | ||
123dc839 DJ |
749 | /* Return 1 if this target description includes any registers. */ |
750 | ||
751 | int | |
752 | tdesc_has_registers (const struct target_desc *target_desc) | |
753 | { | |
754 | int ix; | |
755 | struct tdesc_feature *feature; | |
756 | ||
757 | if (target_desc == NULL) | |
758 | return 0; | |
759 | ||
760 | for (ix = 0; | |
761 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
762 | ix++) | |
763 | if (! VEC_empty (tdesc_reg_p, feature->registers)) | |
764 | return 1; | |
765 | ||
766 | return 0; | |
767 | } | |
768 | ||
769 | /* Return the feature with the given name, if present, or NULL if | |
770 | the named feature is not found. */ | |
771 | ||
772 | const struct tdesc_feature * | |
773 | tdesc_find_feature (const struct target_desc *target_desc, | |
774 | const char *name) | |
775 | { | |
776 | int ix; | |
777 | struct tdesc_feature *feature; | |
778 | ||
779 | for (ix = 0; | |
780 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
781 | ix++) | |
782 | if (strcmp (feature->name, name) == 0) | |
783 | return feature; | |
784 | ||
785 | return NULL; | |
786 | } | |
787 | ||
788 | /* Return the name of FEATURE. */ | |
789 | ||
790 | const char * | |
791 | tdesc_feature_name (const struct tdesc_feature *feature) | |
792 | { | |
793 | return feature->name; | |
794 | } | |
795 | ||
ad068eab UW |
796 | /* Predefined types. */ |
797 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 798 | { |
81516450 | 799 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
800 | { "int8", TDESC_TYPE_INT8 }, |
801 | { "int16", TDESC_TYPE_INT16 }, | |
802 | { "int32", TDESC_TYPE_INT32 }, | |
803 | { "int64", TDESC_TYPE_INT64 }, | |
804 | { "int128", TDESC_TYPE_INT128 }, | |
805 | { "uint8", TDESC_TYPE_UINT8 }, | |
806 | { "uint16", TDESC_TYPE_UINT16 }, | |
807 | { "uint32", TDESC_TYPE_UINT32 }, | |
808 | { "uint64", TDESC_TYPE_UINT64 }, | |
809 | { "uint128", TDESC_TYPE_UINT128 }, | |
810 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
811 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
812 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
813 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 814 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 815 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 816 | }; |
81adfced | 817 | |
81516450 DE |
818 | /* Lookup a predefined type. */ |
819 | ||
820 | static struct tdesc_type * | |
821 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
822 | { | |
798a7429 | 823 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
81516450 DE |
824 | if (tdesc_predefined_types[ix].kind == kind) |
825 | return &tdesc_predefined_types[ix]; | |
826 | ||
827 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
828 | } | |
829 | ||
f49ff000 | 830 | /* See arch/tdesc.h. */ |
123dc839 | 831 | |
ad068eab | 832 | struct tdesc_type * |
123dc839 DJ |
833 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
834 | { | |
835 | int ix; | |
ad068eab | 836 | struct tdesc_type *type; |
123dc839 DJ |
837 | |
838 | /* First try target-defined types. */ | |
ad068eab UW |
839 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
840 | if (strcmp (type->name, id) == 0) | |
841 | return type; | |
123dc839 | 842 | |
81adfced DJ |
843 | /* Next try the predefined types. */ |
844 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
845 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 846 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
847 | |
848 | return NULL; | |
849 | } | |
ad068eab | 850 | |
9fd3625f L |
851 | /* Lookup type associated with ID. */ |
852 | ||
853 | struct type * | |
854 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
855 | { | |
856 | struct tdesc_arch_reg *reg; | |
857 | struct tdesc_arch_data *data; | |
858 | int i, num_regs; | |
859 | ||
19ba03f4 | 860 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
9fd3625f L |
861 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); |
862 | for (i = 0; i < num_regs; i++) | |
863 | { | |
864 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); | |
865 | if (reg->reg | |
866 | && reg->reg->tdesc_type | |
867 | && reg->type | |
868 | && strcmp (id, reg->reg->tdesc_type->name) == 0) | |
869 | return reg->type; | |
870 | } | |
871 | ||
872 | return NULL; | |
873 | } | |
874 | ||
ad068eab UW |
875 | /* Construct, if necessary, and return the GDB type implementing target |
876 | type TDESC_TYPE for architecture GDBARCH. */ | |
877 | ||
878 | static struct type * | |
879 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
880 | { | |
9fd3625f L |
881 | struct type *type; |
882 | ||
ad068eab UW |
883 | switch (tdesc_type->kind) |
884 | { | |
885 | /* Predefined types. */ | |
81516450 DE |
886 | case TDESC_TYPE_BOOL: |
887 | return builtin_type (gdbarch)->builtin_bool; | |
888 | ||
ad068eab | 889 | case TDESC_TYPE_INT8: |
df4df182 | 890 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
891 | |
892 | case TDESC_TYPE_INT16: | |
df4df182 | 893 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
894 | |
895 | case TDESC_TYPE_INT32: | |
df4df182 | 896 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
897 | |
898 | case TDESC_TYPE_INT64: | |
df4df182 | 899 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
900 | |
901 | case TDESC_TYPE_INT128: | |
df4df182 | 902 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
903 | |
904 | case TDESC_TYPE_UINT8: | |
df4df182 | 905 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
906 | |
907 | case TDESC_TYPE_UINT16: | |
df4df182 | 908 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
909 | |
910 | case TDESC_TYPE_UINT32: | |
df4df182 | 911 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
912 | |
913 | case TDESC_TYPE_UINT64: | |
df4df182 | 914 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
915 | |
916 | case TDESC_TYPE_UINT128: | |
df4df182 | 917 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
918 | |
919 | case TDESC_TYPE_CODE_PTR: | |
920 | return builtin_type (gdbarch)->builtin_func_ptr; | |
921 | ||
922 | case TDESC_TYPE_DATA_PTR: | |
923 | return builtin_type (gdbarch)->builtin_data_ptr; | |
924 | ||
9fd3625f L |
925 | default: |
926 | break; | |
927 | } | |
928 | ||
929 | type = tdesc_find_type (gdbarch, tdesc_type->name); | |
930 | if (type) | |
931 | return type; | |
932 | ||
933 | switch (tdesc_type->kind) | |
934 | { | |
ad068eab | 935 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 936 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 937 | floatformats_ieee_single); |
ad068eab UW |
938 | |
939 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 940 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 941 | floatformats_ieee_double); |
ad068eab UW |
942 | |
943 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 944 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 945 | floatformats_arm_ext); |
ad068eab | 946 | |
9fd3625f L |
947 | case TDESC_TYPE_I387_EXT: |
948 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
949 | floatformats_i387_ext); | |
950 | ||
ad068eab UW |
951 | /* Types defined by a target feature. */ |
952 | case TDESC_TYPE_VECTOR: | |
953 | { | |
954 | struct type *type, *field_type; | |
955 | ||
956 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
957 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
958 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
959 | ||
960 | return type; | |
961 | } | |
962 | ||
f5dff777 DJ |
963 | case TDESC_TYPE_STRUCT: |
964 | { | |
965 | struct type *type, *field_type; | |
966 | struct tdesc_type_field *f; | |
967 | int ix; | |
968 | ||
969 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); | |
970 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
971 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
972 | ||
973 | for (ix = 0; | |
974 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
975 | ix++) | |
976 | { | |
81516450 | 977 | if (f->start != -1 && f->end != -1) |
f5dff777 DJ |
978 | { |
979 | /* Bitfield. */ | |
980 | struct field *fld; | |
981 | struct type *field_type; | |
982 | int bitsize, total_size; | |
983 | ||
81516450 | 984 | /* This invariant should be preserved while creating types. */ |
f5dff777 | 985 | gdb_assert (tdesc_type->u.u.size != 0); |
81516450 DE |
986 | if (f->type != NULL) |
987 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
988 | else if (tdesc_type->u.u.size > 4) | |
f5dff777 DJ |
989 | field_type = builtin_type (gdbarch)->builtin_uint64; |
990 | else | |
991 | field_type = builtin_type (gdbarch)->builtin_uint32; | |
992 | ||
993 | fld = append_composite_type_field_raw (type, xstrdup (f->name), | |
994 | field_type); | |
995 | ||
996 | /* For little-endian, BITPOS counts from the LSB of | |
997 | the structure and marks the LSB of the field. For | |
998 | big-endian, BITPOS counts from the MSB of the | |
999 | structure and marks the MSB of the field. Either | |
1000 | way, it is the number of bits to the "left" of the | |
1001 | field. To calculate this in big-endian, we need | |
1002 | the total size of the structure. */ | |
1003 | bitsize = f->end - f->start + 1; | |
1004 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; | |
1005 | if (gdbarch_bits_big_endian (gdbarch)) | |
f41f5e61 | 1006 | SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize); |
f5dff777 | 1007 | else |
f41f5e61 | 1008 | SET_FIELD_BITPOS (fld[0], f->start); |
f5dff777 DJ |
1009 | FIELD_BITSIZE (fld[0]) = bitsize; |
1010 | } | |
1011 | else | |
1012 | { | |
81516450 | 1013 | gdb_assert (f->start == -1 && f->end == -1); |
f5dff777 DJ |
1014 | field_type = tdesc_gdb_type (gdbarch, f->type); |
1015 | append_composite_type_field (type, xstrdup (f->name), | |
1016 | field_type); | |
1017 | } | |
1018 | } | |
1019 | ||
1020 | if (tdesc_type->u.u.size != 0) | |
1021 | TYPE_LENGTH (type) = tdesc_type->u.u.size; | |
1022 | return type; | |
1023 | } | |
1024 | ||
ad068eab UW |
1025 | case TDESC_TYPE_UNION: |
1026 | { | |
1027 | struct type *type, *field_type; | |
1028 | struct tdesc_type_field *f; | |
1029 | int ix; | |
1030 | ||
e9bb382b | 1031 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
ad068eab UW |
1032 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
1033 | ||
1034 | for (ix = 0; | |
1035 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
1036 | ix++) | |
1037 | { | |
1038 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
1039 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
1040 | ||
f5dff777 | 1041 | /* If any of the children of a union are vectors, flag the |
ad068eab UW |
1042 | union as a vector also. This allows e.g. a union of two |
1043 | vector types to show up automatically in "info vector". */ | |
1044 | if (TYPE_VECTOR (field_type)) | |
1045 | TYPE_VECTOR (type) = 1; | |
1046 | } | |
f5dff777 DJ |
1047 | return type; |
1048 | } | |
1049 | ||
1050 | case TDESC_TYPE_FLAGS: | |
1051 | { | |
81516450 | 1052 | struct tdesc_type_field *f; |
f5dff777 DJ |
1053 | int ix; |
1054 | ||
3494b66d | 1055 | type = arch_flags_type (gdbarch, tdesc_type->name, |
77b7c781 | 1056 | tdesc_type->u.u.size * TARGET_CHAR_BIT); |
81516450 DE |
1057 | for (ix = 0; |
1058 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
1059 | ix++) | |
1060 | { | |
1061 | struct type *field_type; | |
1062 | int bitsize = f->end - f->start + 1; | |
1063 | ||
1064 | gdb_assert (f->type != NULL); | |
1065 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
1066 | append_flags_type_field (type, f->start, bitsize, | |
1067 | field_type, f->name); | |
1068 | } | |
1069 | ||
1070 | return type; | |
1071 | } | |
1072 | ||
1073 | case TDESC_TYPE_ENUM: | |
1074 | { | |
1075 | struct tdesc_type_field *f; | |
1076 | int ix; | |
1077 | ||
1078 | type = arch_type (gdbarch, TYPE_CODE_ENUM, | |
77b7c781 UW |
1079 | tdesc_type->u.u.size * TARGET_CHAR_BIT, |
1080 | tdesc_type->name); | |
81516450 | 1081 | TYPE_UNSIGNED (type) = 1; |
f5dff777 | 1082 | for (ix = 0; |
81516450 | 1083 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
f5dff777 | 1084 | ix++) |
81516450 DE |
1085 | { |
1086 | struct field *fld | |
1087 | = append_composite_type_field_raw (type, xstrdup (f->name), | |
1088 | NULL); | |
1089 | ||
1090 | SET_FIELD_BITPOS (fld[0], f->start); | |
1091 | } | |
ad068eab UW |
1092 | |
1093 | return type; | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | internal_error (__FILE__, __LINE__, | |
1098 | "Type \"%s\" has an unknown kind %d", | |
1099 | tdesc_type->name, tdesc_type->kind); | |
1100 | } | |
123dc839 DJ |
1101 | \f |
1102 | ||
1103 | /* Support for registers from target descriptions. */ | |
1104 | ||
1105 | /* Construct the per-gdbarch data. */ | |
1106 | ||
1107 | static void * | |
1108 | tdesc_data_init (struct obstack *obstack) | |
1109 | { | |
1110 | struct tdesc_arch_data *data; | |
1111 | ||
1112 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
1113 | return data; | |
1114 | } | |
1115 | ||
1116 | /* Similar, but for the temporary copy used during architecture | |
1117 | initialization. */ | |
1118 | ||
1119 | struct tdesc_arch_data * | |
1120 | tdesc_data_alloc (void) | |
1121 | { | |
41bf6aca | 1122 | return XCNEW (struct tdesc_arch_data); |
123dc839 DJ |
1123 | } |
1124 | ||
1125 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
1126 | to be used (for instance if it was unsuitable for the | |
1127 | architecture). */ | |
1128 | ||
1129 | void | |
1130 | tdesc_data_cleanup (void *data_untyped) | |
1131 | { | |
19ba03f4 | 1132 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 1133 | |
ad068eab | 1134 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
1135 | xfree (data); |
1136 | } | |
1137 | ||
1138 | /* Search FEATURE for a register named NAME. */ | |
1139 | ||
7cc46491 DJ |
1140 | static struct tdesc_reg * |
1141 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
1142 | const char *name) | |
123dc839 DJ |
1143 | { |
1144 | int ixr; | |
1145 | struct tdesc_reg *reg; | |
1146 | ||
1147 | for (ixr = 0; | |
1148 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1149 | ixr++) | |
1150 | if (strcasecmp (reg->name, name) == 0) | |
7cc46491 | 1151 | return reg; |
123dc839 | 1152 | |
7cc46491 DJ |
1153 | return NULL; |
1154 | } | |
1155 | ||
1156 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
1157 | ||
1158 | int | |
1159 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
1160 | struct tdesc_arch_data *data, | |
1161 | int regno, const char *name) | |
1162 | { | |
ad068eab | 1163 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
1164 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
1165 | ||
1166 | if (reg == NULL) | |
1167 | return 0; | |
1168 | ||
1169 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
1170 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
1171 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
1172 | ||
1173 | arch_reg.reg = reg; | |
1174 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 1175 | return 1; |
123dc839 DJ |
1176 | } |
1177 | ||
58d6951d DJ |
1178 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
1179 | register number to it. */ | |
1180 | ||
1181 | int | |
1182 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
1183 | const char *name) | |
1184 | { | |
1185 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1186 | ||
1187 | if (reg == NULL) | |
1188 | return 0; | |
1189 | ||
1190 | return 1; | |
1191 | } | |
1192 | ||
7cc46491 DJ |
1193 | /* Search FEATURE for a register whose name is in NAMES and assign |
1194 | REGNO to it. */ | |
123dc839 DJ |
1195 | |
1196 | int | |
1197 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
1198 | struct tdesc_arch_data *data, | |
1199 | int regno, const char *const names[]) | |
1200 | { | |
1201 | int i; | |
1202 | ||
1203 | for (i = 0; names[i] != NULL; i++) | |
1204 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
1205 | return 1; | |
1206 | ||
1207 | return 0; | |
1208 | } | |
1209 | ||
7cc46491 DJ |
1210 | /* Search FEATURE for a register named NAME, and return its size in |
1211 | bits. The register must exist. */ | |
1212 | ||
1213 | int | |
1214 | tdesc_register_size (const struct tdesc_feature *feature, | |
1215 | const char *name) | |
1216 | { | |
1217 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1218 | ||
1219 | gdb_assert (reg != NULL); | |
1220 | return reg->bitsize; | |
1221 | } | |
1222 | ||
123dc839 DJ |
1223 | /* Look up a register by its GDB internal register number. */ |
1224 | ||
ad068eab UW |
1225 | static struct tdesc_arch_reg * |
1226 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 1227 | { |
123dc839 DJ |
1228 | struct tdesc_arch_data *data; |
1229 | ||
19ba03f4 | 1230 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab UW |
1231 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
1232 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
1233 | else |
1234 | return NULL; | |
1235 | } | |
1236 | ||
ad068eab UW |
1237 | static struct tdesc_reg * |
1238 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
1239 | { | |
1240 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 1241 | |
ad068eab UW |
1242 | return reg? reg->reg : NULL; |
1243 | } | |
1244 | ||
f8b73d13 DJ |
1245 | /* Return the name of register REGNO, from the target description or |
1246 | from an architecture-provided pseudo_register_name method. */ | |
1247 | ||
1248 | const char * | |
d93859e2 | 1249 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 1250 | { |
d93859e2 UW |
1251 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1252 | int num_regs = gdbarch_num_regs (gdbarch); | |
1253 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
1254 | |
1255 | if (reg != NULL) | |
1256 | return reg->name; | |
1257 | ||
1258 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1259 | { | |
19ba03f4 SM |
1260 | struct tdesc_arch_data *data |
1261 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1262 | |
123dc839 | 1263 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 1264 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
1265 | } |
1266 | ||
1267 | return ""; | |
1268 | } | |
1269 | ||
58d6951d | 1270 | struct type * |
123dc839 DJ |
1271 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
1272 | { | |
ad068eab UW |
1273 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
1274 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1275 | int num_regs = gdbarch_num_regs (gdbarch); |
1276 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1277 | ||
1278 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1279 | { | |
19ba03f4 SM |
1280 | struct tdesc_arch_data *data |
1281 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1282 | |
123dc839 DJ |
1283 | gdb_assert (data->pseudo_register_type != NULL); |
1284 | return data->pseudo_register_type (gdbarch, regno); | |
1285 | } | |
1286 | ||
1287 | if (reg == NULL) | |
1288 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1289 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1290 | |
ad068eab | 1291 | if (arch_reg->type == NULL) |
123dc839 | 1292 | { |
ad068eab UW |
1293 | /* First check for a predefined or target defined type. */ |
1294 | if (reg->tdesc_type) | |
1295 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
1296 | ||
1297 | /* Next try size-sensitive type shortcuts. */ | |
1298 | else if (strcmp (reg->type, "float") == 0) | |
1299 | { | |
1300 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1301 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1302 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1303 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1304 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1305 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1306 | else | |
1307 | { | |
1308 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1309 | reg->name, reg->bitsize); | |
1310 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1311 | } | |
1312 | } | |
1313 | else if (strcmp (reg->type, "int") == 0) | |
1314 | { | |
1315 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1316 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1317 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1318 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1319 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1320 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1321 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1322 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1323 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1324 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1325 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1326 | /* A bit desperate by this point... */ |
ad068eab UW |
1327 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1328 | else | |
1329 | { | |
1330 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1331 | reg->name, reg->bitsize); | |
1332 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | if (arch_reg->type == NULL) | |
1337 | internal_error (__FILE__, __LINE__, | |
1338 | "Register \"%s\" has an unknown type \"%s\"", | |
1339 | reg->name, reg->type); | |
123dc839 | 1340 | } |
123dc839 | 1341 | |
ad068eab | 1342 | return arch_reg->type; |
123dc839 DJ |
1343 | } |
1344 | ||
1345 | static int | |
1346 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1347 | { | |
1348 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1349 | ||
1350 | if (reg != NULL) | |
1351 | return reg->target_regnum; | |
1352 | else | |
1353 | return -1; | |
1354 | } | |
1355 | ||
1356 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
1357 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
1358 | Unlike a gdbarch register_reggroup_p method, this function will |
1359 | return -1 if it does not know; the caller should handle registers | |
1360 | with no specified group. | |
123dc839 DJ |
1361 | |
1362 | Arbitrary strings (other than "general", "float", and "vector") | |
1363 | from the description are not used; they cause the register to be | |
1364 | displayed in "info all-registers" but excluded from "info | |
1365 | registers" et al. The names of containing features are also not | |
1366 | used. This might be extended to display registers in some more | |
1367 | useful groupings. | |
1368 | ||
1369 | The save-restore flag is also implemented here. */ | |
1370 | ||
f8b73d13 DJ |
1371 | int |
1372 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1373 | struct reggroup *reggroup) | |
123dc839 | 1374 | { |
123dc839 DJ |
1375 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1376 | ||
123dc839 DJ |
1377 | if (reg != NULL && reg->group != NULL) |
1378 | { | |
1379 | int general_p = 0, float_p = 0, vector_p = 0; | |
1380 | ||
1381 | if (strcmp (reg->group, "general") == 0) | |
1382 | general_p = 1; | |
1383 | else if (strcmp (reg->group, "float") == 0) | |
1384 | float_p = 1; | |
1385 | else if (strcmp (reg->group, "vector") == 0) | |
1386 | vector_p = 1; | |
1387 | ||
1388 | if (reggroup == float_reggroup) | |
1389 | return float_p; | |
1390 | ||
1391 | if (reggroup == vector_reggroup) | |
1392 | return vector_p; | |
1393 | ||
1394 | if (reggroup == general_reggroup) | |
1395 | return general_p; | |
1396 | } | |
1397 | ||
1398 | if (reg != NULL | |
1399 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1400 | return reg->save_restore; | |
1401 | ||
f8b73d13 DJ |
1402 | return -1; |
1403 | } | |
1404 | ||
1405 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1406 | group specified go to the default reggroup function and are handled | |
1407 | by type. */ | |
1408 | ||
1409 | static int | |
1410 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1411 | struct reggroup *reggroup) | |
1412 | { | |
1413 | int num_regs = gdbarch_num_regs (gdbarch); | |
1414 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1415 | int ret; | |
1416 | ||
1417 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1418 | { | |
19ba03f4 SM |
1419 | struct tdesc_arch_data *data |
1420 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1421 | |
58d6951d DJ |
1422 | if (data->pseudo_register_reggroup_p != NULL) |
1423 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1424 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1425 | } |
1426 | ||
1427 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1428 | if (ret != -1) | |
1429 | return ret; | |
1430 | ||
123dc839 DJ |
1431 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1432 | } | |
1433 | ||
1434 | /* Record architecture-specific functions to call for pseudo-register | |
1435 | support. */ | |
1436 | ||
1437 | void | |
1438 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1439 | gdbarch_register_name_ftype *pseudo_name) | |
1440 | { | |
19ba03f4 SM |
1441 | struct tdesc_arch_data *data |
1442 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1443 | |
1444 | data->pseudo_register_name = pseudo_name; | |
1445 | } | |
1446 | ||
1447 | void | |
1448 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1449 | gdbarch_register_type_ftype *pseudo_type) | |
1450 | { | |
19ba03f4 SM |
1451 | struct tdesc_arch_data *data |
1452 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1453 | |
1454 | data->pseudo_register_type = pseudo_type; | |
1455 | } | |
1456 | ||
1457 | void | |
1458 | set_tdesc_pseudo_register_reggroup_p | |
1459 | (struct gdbarch *gdbarch, | |
1460 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1461 | { | |
19ba03f4 SM |
1462 | struct tdesc_arch_data *data |
1463 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1464 | |
1465 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1466 | } | |
1467 | ||
1468 | /* Update GDBARCH to use the target description for registers. */ | |
1469 | ||
1470 | void | |
1471 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1472 | const struct target_desc *target_desc, |
123dc839 DJ |
1473 | struct tdesc_arch_data *early_data) |
1474 | { | |
1475 | int num_regs = gdbarch_num_regs (gdbarch); | |
c6913b7d | 1476 | int ixf, ixr; |
123dc839 DJ |
1477 | struct tdesc_feature *feature; |
1478 | struct tdesc_reg *reg; | |
1479 | struct tdesc_arch_data *data; | |
ad068eab | 1480 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
1481 | htab_t reg_hash; |
1482 | ||
123dc839 DJ |
1483 | /* We can't use the description for registers if it doesn't describe |
1484 | any. This function should only be called after validating | |
1485 | registers, so the caller should know that registers are | |
1486 | included. */ | |
1487 | gdb_assert (tdesc_has_registers (target_desc)); | |
1488 | ||
19ba03f4 | 1489 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1490 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
1491 | xfree (early_data); |
1492 | ||
1493 | /* Build up a set of all registers, so that we can assign register | |
1494 | numbers where needed. The hash table expands as necessary, so | |
1495 | the initial size is arbitrary. */ | |
1496 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
1497 | for (ixf = 0; | |
1498 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1499 | ixf++) | |
1500 | for (ixr = 0; | |
1501 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1502 | ixr++) | |
1503 | { | |
1504 | void **slot = htab_find_slot (reg_hash, reg, INSERT); | |
1505 | ||
1506 | *slot = reg; | |
1507 | } | |
1508 | ||
1509 | /* Remove any registers which were assigned numbers by the | |
1510 | architecture. */ | |
ad068eab UW |
1511 | for (ixr = 0; |
1512 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); | |
1513 | ixr++) | |
1514 | if (arch_reg->reg) | |
1515 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
1516 | |
1517 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1518 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1519 | Iterate over the features, not the hash table, so that the order |
1520 | matches that in the target description. */ | |
1521 | ||
ad068eab UW |
1522 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1523 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1524 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1525 | for (ixf = 0; |
1526 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1527 | ixf++) | |
1528 | for (ixr = 0; | |
1529 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1530 | ixr++) | |
1531 | if (htab_find (reg_hash, reg) != NULL) | |
1532 | { | |
ad068eab UW |
1533 | new_arch_reg.reg = reg; |
1534 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1535 | num_regs++; |
1536 | } | |
1537 | ||
1538 | htab_delete (reg_hash); | |
1539 | ||
1540 | /* Update the architecture. */ | |
1541 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1542 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1543 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1544 | set_gdbarch_remote_register_number (gdbarch, | |
1545 | tdesc_remote_register_number); | |
1546 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1547 | } | |
1548 | \f | |
1549 | ||
f49ff000 YQ |
1550 | /* See arch/tdesc.h. */ |
1551 | ||
123dc839 DJ |
1552 | void |
1553 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1554 | int regnum, int save_restore, const char *group, | |
1555 | int bitsize, const char *type) | |
1556 | { | |
72ddacb7 YQ |
1557 | tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, |
1558 | group, bitsize, type); | |
123dc839 DJ |
1559 | |
1560 | VEC_safe_push (tdesc_reg_p, feature->registers, reg); | |
1561 | } | |
1562 | ||
f49ff000 YQ |
1563 | /* See arch/tdesc.h. */ |
1564 | ||
ad068eab UW |
1565 | struct tdesc_type * |
1566 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1567 | struct tdesc_type *field_type, int count) | |
1568 | { | |
72ddacb7 | 1569 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_VECTOR); |
ad068eab | 1570 | |
ad068eab UW |
1571 | type->u.v.type = field_type; |
1572 | type->u.v.count = count; | |
1573 | ||
1574 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1575 | return type; | |
1576 | } | |
1577 | ||
f49ff000 YQ |
1578 | /* See arch/tdesc.h. */ |
1579 | ||
f5dff777 DJ |
1580 | struct tdesc_type * |
1581 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
1582 | { | |
72ddacb7 | 1583 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_STRUCT); |
f5dff777 DJ |
1584 | |
1585 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1586 | return type; | |
1587 | } | |
1588 | ||
f49ff000 | 1589 | /* See arch/tdesc.h. */ |
f5dff777 DJ |
1590 | |
1591 | void | |
54157a25 | 1592 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
f5dff777 DJ |
1593 | { |
1594 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1595 | gdb_assert (size > 0); |
f5dff777 DJ |
1596 | type->u.u.size = size; |
1597 | } | |
1598 | ||
f49ff000 YQ |
1599 | /* See arch/tdesc.h. */ |
1600 | ||
ad068eab UW |
1601 | struct tdesc_type * |
1602 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1603 | { | |
72ddacb7 | 1604 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_UNION); |
ad068eab UW |
1605 | |
1606 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1607 | return type; | |
1608 | } | |
1609 | ||
f49ff000 YQ |
1610 | /* See arch/tdesc.h. */ |
1611 | ||
f5dff777 DJ |
1612 | struct tdesc_type * |
1613 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
54157a25 | 1614 | int size) |
f5dff777 | 1615 | { |
72ddacb7 | 1616 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_FLAGS); |
f5dff777 | 1617 | |
54157a25 DE |
1618 | gdb_assert (size > 0); |
1619 | ||
81516450 | 1620 | type->u.u.size = size; |
f5dff777 DJ |
1621 | |
1622 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1623 | return type; | |
1624 | } | |
1625 | ||
81516450 DE |
1626 | struct tdesc_type * |
1627 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
1628 | int size) | |
1629 | { | |
72ddacb7 | 1630 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_ENUM); |
81516450 DE |
1631 | |
1632 | gdb_assert (size > 0); | |
1633 | ||
81516450 DE |
1634 | type->u.u.size = size; |
1635 | ||
1636 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1637 | return type; | |
1638 | } | |
1639 | ||
f49ff000 | 1640 | /* See arch/tdesc.h. */ |
f5dff777 | 1641 | |
ad068eab UW |
1642 | void |
1643 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1644 | struct tdesc_type *field_type) | |
1645 | { | |
1646 | struct tdesc_type_field f = { 0 }; | |
1647 | ||
f5dff777 DJ |
1648 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1649 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab UW |
1650 | |
1651 | f.name = xstrdup (field_name); | |
1652 | f.type = field_type; | |
81516450 DE |
1653 | /* Initialize these values so we know this is not a bit-field |
1654 | when we print-c-tdesc. */ | |
1655 | f.start = -1; | |
1656 | f.end = -1; | |
ad068eab UW |
1657 | |
1658 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1659 | } | |
1660 | ||
f5dff777 | 1661 | void |
81516450 DE |
1662 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
1663 | int start, int end, struct tdesc_type *field_type) | |
f5dff777 DJ |
1664 | { |
1665 | struct tdesc_type_field f = { 0 }; | |
1666 | ||
81516450 DE |
1667 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1668 | || type->kind == TDESC_TYPE_FLAGS); | |
1669 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 DJ |
1670 | |
1671 | f.name = xstrdup (field_name); | |
1672 | f.start = start; | |
1673 | f.end = end; | |
81516450 | 1674 | f.type = field_type; |
f5dff777 DJ |
1675 | |
1676 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1677 | } | |
1678 | ||
f49ff000 | 1679 | /* See arch/tdesc.h. */ |
81516450 DE |
1680 | |
1681 | void | |
1682 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, | |
1683 | int start, int end) | |
1684 | { | |
1685 | struct tdesc_type *field_type; | |
1686 | ||
1687 | gdb_assert (start >= 0 && end >= start); | |
1688 | ||
1689 | if (type->u.u.size > 4) | |
1690 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
1691 | else | |
1692 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1693 | ||
1694 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1695 | } | |
1696 | ||
f49ff000 | 1697 | /* See arch/tdesc.h. */ |
81516450 | 1698 | |
f5dff777 DJ |
1699 | void |
1700 | tdesc_add_flag (struct tdesc_type *type, int start, | |
1701 | const char *flag_name) | |
1702 | { | |
81516450 | 1703 | struct tdesc_type_field f = { 0 }; |
f5dff777 | 1704 | |
81516450 DE |
1705 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1706 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 DJ |
1707 | |
1708 | f.name = xstrdup (flag_name); | |
1709 | f.start = start; | |
81516450 DE |
1710 | f.end = start; |
1711 | f.type = tdesc_predefined_type (TDESC_TYPE_BOOL); | |
f5dff777 | 1712 | |
81516450 DE |
1713 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
1714 | } | |
1715 | ||
1716 | void | |
1717 | tdesc_add_enum_value (struct tdesc_type *type, int value, | |
1718 | const char *name) | |
1719 | { | |
1720 | struct tdesc_type_field f = { 0 }; | |
1721 | ||
1722 | gdb_assert (type->kind == TDESC_TYPE_ENUM); | |
1723 | ||
1724 | f.name = xstrdup (name); | |
1725 | f.start = value; | |
1726 | f.end = -1; | |
1727 | f.type = tdesc_predefined_type (TDESC_TYPE_INT32); | |
1728 | ||
1729 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
f5dff777 DJ |
1730 | } |
1731 | ||
f49ff000 YQ |
1732 | /* See arch/tdesc.h. */ |
1733 | ||
123dc839 | 1734 | struct tdesc_feature * |
0abe8a89 YQ |
1735 | tdesc_create_feature (struct target_desc *tdesc, const char *name, |
1736 | const char *xml) | |
123dc839 | 1737 | { |
72ddacb7 | 1738 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 DJ |
1739 | |
1740 | VEC_safe_push (tdesc_feature_p, tdesc->features, new_feature); | |
1741 | return new_feature; | |
1742 | } | |
1743 | ||
424163ea DJ |
1744 | struct target_desc * |
1745 | allocate_target_description (void) | |
1746 | { | |
b468ff4c | 1747 | return new target_desc (); |
424163ea | 1748 | } |
29709017 | 1749 | |
23181151 DJ |
1750 | static void |
1751 | free_target_description (void *arg) | |
1752 | { | |
19ba03f4 | 1753 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1754 | |
b468ff4c | 1755 | delete target_desc; |
23181151 DJ |
1756 | } |
1757 | ||
1758 | struct cleanup * | |
1759 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1760 | { | |
1761 | return make_cleanup (free_target_description, target_desc); | |
1762 | } | |
1763 | ||
e35359c5 UW |
1764 | void |
1765 | tdesc_add_compatible (struct target_desc *target_desc, | |
1766 | const struct bfd_arch_info *compatible) | |
1767 | { | |
1768 | const struct bfd_arch_info *compat; | |
1769 | int ix; | |
1770 | ||
1771 | /* If this instance of GDB is compiled without BFD support for the | |
1772 | compatible architecture, simply ignore it -- we would not be able | |
1773 | to handle it anyway. */ | |
1774 | if (compatible == NULL) | |
1775 | return; | |
1776 | ||
1777 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
1778 | ix++) | |
1779 | if (compat == compatible) | |
1780 | internal_error (__FILE__, __LINE__, | |
1781 | _("Attempted to add duplicate " | |
1782 | "compatible architecture \"%s\""), | |
1783 | compatible->printable_name); | |
1784 | ||
1785 | VEC_safe_push (arch_p, target_desc->compatible, compatible); | |
1786 | } | |
1787 | ||
29709017 DJ |
1788 | void |
1789 | set_tdesc_property (struct target_desc *target_desc, | |
1790 | const char *key, const char *value) | |
1791 | { | |
29709017 DJ |
1792 | gdb_assert (key != NULL && value != NULL); |
1793 | ||
129c10bc SM |
1794 | if (tdesc_property (target_desc, key) != NULL) |
1795 | internal_error (__FILE__, __LINE__, | |
1796 | _("Attempted to add duplicate property \"%s\""), key); | |
29709017 | 1797 | |
129c10bc | 1798 | target_desc->properties.emplace_back (key, value); |
29709017 | 1799 | } |
23181151 | 1800 | |
5f035c07 YQ |
1801 | /* See arch/tdesc.h. */ |
1802 | ||
1803 | void | |
1804 | set_tdesc_architecture (struct target_desc *target_desc, | |
1805 | const char *name) | |
1806 | { | |
1807 | set_tdesc_architecture (target_desc, bfd_scan_arch (name)); | |
1808 | } | |
1809 | ||
23181151 DJ |
1810 | void |
1811 | set_tdesc_architecture (struct target_desc *target_desc, | |
1812 | const struct bfd_arch_info *arch) | |
1813 | { | |
1814 | target_desc->arch = arch; | |
1815 | } | |
08d16641 | 1816 | |
5f035c07 YQ |
1817 | /* See arch/tdesc.h. */ |
1818 | ||
1819 | void | |
1820 | set_tdesc_osabi (struct target_desc *target_desc, const char *name) | |
1821 | { | |
1822 | set_tdesc_osabi (target_desc, osabi_from_tdesc_string (name)); | |
1823 | } | |
1824 | ||
08d16641 PA |
1825 | void |
1826 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1827 | { | |
1828 | target_desc->osabi = osabi; | |
1829 | } | |
23181151 DJ |
1830 | \f |
1831 | ||
1832 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1833 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1834 | ||
1835 | /* Helper functions for the CLI commands. */ | |
1836 | ||
1837 | static void | |
981a3fb3 | 1838 | set_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1839 | { |
635c7e8a | 1840 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1841 | } |
1842 | ||
1843 | static void | |
981a3fb3 | 1844 | show_tdesc_cmd (const char *args, int from_tty) |
23181151 DJ |
1845 | { |
1846 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1847 | } | |
1848 | ||
1849 | static void | |
981a3fb3 | 1850 | unset_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1851 | { |
635c7e8a | 1852 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1853 | } |
1854 | ||
1855 | static void | |
eb4c3f4a | 1856 | set_tdesc_filename_cmd (const char *args, int from_tty, |
23181151 DJ |
1857 | struct cmd_list_element *c) |
1858 | { | |
6ecd4729 PA |
1859 | xfree (target_description_filename); |
1860 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1861 | ||
23181151 DJ |
1862 | target_clear_description (); |
1863 | target_find_description (); | |
1864 | } | |
1865 | ||
1866 | static void | |
1867 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1868 | struct cmd_list_element *c, | |
1869 | const char *value) | |
1870 | { | |
6ecd4729 PA |
1871 | value = target_description_filename; |
1872 | ||
23181151 | 1873 | if (value != NULL && *value != '\0') |
3e43a32a | 1874 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1875 | value); |
1876 | else | |
3e43a32a MS |
1877 | printf_filtered (_("The target description will be " |
1878 | "read from the target.\n")); | |
23181151 DJ |
1879 | } |
1880 | ||
1881 | static void | |
e100df1a | 1882 | unset_tdesc_filename_cmd (const char *args, int from_tty) |
23181151 DJ |
1883 | { |
1884 | xfree (target_description_filename); | |
1885 | target_description_filename = NULL; | |
1886 | target_clear_description (); | |
1887 | target_find_description (); | |
1888 | } | |
1889 | ||
6eb1e6a8 YQ |
1890 | /* Print target description in C. */ |
1891 | ||
1892 | class print_c_tdesc : public tdesc_element_visitor | |
1893 | { | |
1894 | public: | |
1895 | print_c_tdesc (std::string &filename_after_features) | |
1896 | : m_filename_after_features (filename_after_features) | |
1897 | { | |
1898 | const char *inp; | |
1899 | char *outp; | |
1900 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1901 | ||
1902 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1903 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1904 | if (*inp == '.') | |
1905 | break; | |
1906 | else if (*inp == '-') | |
1907 | *outp++ = '_'; | |
1908 | else | |
1909 | *outp++ = *inp; | |
1910 | *outp = '\0'; | |
1911 | ||
1912 | /* Standard boilerplate. */ | |
1913 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1914 | "-*- buffer-read-only: t -*- vi" | |
1915 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1916 | } |
1917 | ||
1918 | ~print_c_tdesc () | |
1919 | { | |
1920 | xfree (m_function); | |
1921 | } | |
1922 | ||
1923 | void visit_pre (const target_desc *e) override | |
1924 | { | |
25aa13e5 YQ |
1925 | printf_unfiltered (" Original: %s */\n\n", |
1926 | lbasename (m_filename_after_features.c_str ())); | |
1927 | ||
6eb1e6a8 YQ |
1928 | printf_unfiltered ("#include \"defs.h\"\n"); |
1929 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1930 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1931 | printf_unfiltered ("\n"); | |
1932 | ||
1933 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1934 | printf_unfiltered ("static void\n"); | |
1935 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1936 | printf_unfiltered ("{\n"); | |
1937 | printf_unfiltered | |
1938 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1939 | ||
1940 | if (tdesc_architecture (e) != NULL) | |
1941 | { | |
1942 | printf_unfiltered | |
1943 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1944 | tdesc_architecture (e)->printable_name); | |
1945 | printf_unfiltered ("\n"); | |
1946 | } | |
1947 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1948 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1949 | { | |
1950 | printf_unfiltered | |
1951 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1952 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1953 | printf_unfiltered ("\n"); | |
1954 | } | |
1955 | ||
1956 | int ix; | |
1957 | const struct bfd_arch_info *compatible; | |
1958 | struct property *prop; | |
1959 | ||
1960 | for (ix = 0; VEC_iterate (arch_p, e->compatible, ix, compatible); | |
1961 | ix++) | |
1962 | { | |
1963 | printf_unfiltered | |
1964 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1965 | compatible->printable_name); | |
1966 | } | |
1967 | ||
1968 | if (ix) | |
1969 | printf_unfiltered ("\n"); | |
1970 | ||
129c10bc SM |
1971 | for (const property &prop : e->properties) |
1972 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1973 | prop.key.c_str (), prop.value.c_str ()); | |
1974 | ||
6eb1e6a8 YQ |
1975 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
1976 | } | |
1977 | ||
25aa13e5 | 1978 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1979 | { |
1980 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
1981 | e->name); | |
1982 | } | |
1983 | ||
25aa13e5 YQ |
1984 | void visit_post (const tdesc_feature *e) override |
1985 | {} | |
1986 | ||
6eb1e6a8 YQ |
1987 | void visit_post (const target_desc *e) override |
1988 | { | |
1989 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1990 | printf_unfiltered ("}\n"); | |
1991 | } | |
1992 | ||
1993 | void visit (const tdesc_type *type) override | |
1994 | { | |
1995 | struct tdesc_type_field *f; | |
1996 | ||
1997 | /* Now we do some "filtering" in order to know which variables to | |
1998 | declare. This is needed because otherwise we would declare unused | |
1999 | variables `field_type' and `type'. */ | |
2000 | if (!m_printed_field_type) | |
2001 | { | |
2002 | printf_unfiltered (" struct tdesc_type *field_type;\n"); | |
2003 | m_printed_field_type = true; | |
2004 | } | |
2005 | ||
2006 | if ((type->kind == TDESC_TYPE_UNION | |
2007 | || type->kind == TDESC_TYPE_STRUCT | |
2008 | || type->kind == TDESC_TYPE_FLAGS | |
2009 | || type->kind == TDESC_TYPE_ENUM) | |
2010 | && VEC_length (tdesc_type_field, type->u.u.fields) > 0 | |
2011 | && !m_printed_type) | |
2012 | { | |
2013 | printf_unfiltered (" struct tdesc_type *type;\n"); | |
2014 | m_printed_type = true; | |
2015 | } | |
2016 | ||
2017 | switch (type->kind) | |
2018 | { | |
2019 | case TDESC_TYPE_VECTOR: | |
2020 | printf_unfiltered | |
2021 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
2022 | type->u.v.type->name); | |
2023 | printf_unfiltered | |
2024 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", | |
2025 | type->name, type->u.v.count); | |
2026 | break; | |
2027 | case TDESC_TYPE_STRUCT: | |
2028 | case TDESC_TYPE_FLAGS: | |
2029 | if (type->kind == TDESC_TYPE_STRUCT) | |
2030 | { | |
2031 | printf_unfiltered | |
2032 | (" type = tdesc_create_struct (feature, \"%s\");\n", | |
2033 | type->name); | |
2034 | if (type->u.u.size != 0) | |
2035 | printf_unfiltered | |
2036 | (" tdesc_set_struct_size (type, %d);\n", | |
2037 | type->u.u.size); | |
2038 | } | |
2039 | else | |
2040 | { | |
2041 | printf_unfiltered | |
2042 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", | |
2043 | type->name, type->u.u.size); | |
2044 | } | |
2045 | for (int ix3 = 0; | |
2046 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2047 | ix3++) | |
2048 | { | |
2049 | const char *type_name; | |
2050 | ||
2051 | gdb_assert (f->type != NULL); | |
2052 | type_name = f->type->name; | |
2053 | ||
2054 | /* To minimize changes to generated files, don't emit type | |
2055 | info for fields that have defaulted types. */ | |
2056 | if (f->start != -1) | |
2057 | { | |
2058 | gdb_assert (f->end != -1); | |
2059 | if (f->type->kind == TDESC_TYPE_BOOL) | |
2060 | { | |
2061 | gdb_assert (f->start == f->end); | |
2062 | printf_unfiltered | |
2063 | (" tdesc_add_flag (type, %d, \"%s\");\n", | |
2064 | f->start, f->name); | |
2065 | } | |
2066 | else if ((type->u.u.size == 4 | |
2067 | && f->type->kind == TDESC_TYPE_UINT32) | |
2068 | || (type->u.u.size == 8 | |
2069 | && f->type->kind == TDESC_TYPE_UINT64)) | |
2070 | { | |
2071 | printf_unfiltered | |
2072 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", | |
2073 | f->name, f->start, f->end); | |
2074 | } | |
2075 | else | |
2076 | { | |
2077 | printf_unfiltered | |
2078 | (" field_type = tdesc_named_type (feature," | |
2079 | " \"%s\");\n", | |
2080 | type_name); | |
2081 | printf_unfiltered | |
2082 | (" tdesc_add_typed_bitfield (type, \"%s\"," | |
2083 | " %d, %d, field_type);\n", | |
2084 | f->name, f->start, f->end); | |
2085 | } | |
2086 | } | |
2087 | else /* Not a bitfield. */ | |
2088 | { | |
2089 | gdb_assert (f->end == -1); | |
2090 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
2091 | printf_unfiltered | |
2092 | (" field_type = tdesc_named_type (feature," | |
2093 | " \"%s\");\n", | |
2094 | type_name); | |
2095 | printf_unfiltered | |
2096 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2097 | f->name); | |
2098 | } | |
2099 | } | |
2100 | break; | |
2101 | case TDESC_TYPE_UNION: | |
2102 | printf_unfiltered | |
2103 | (" type = tdesc_create_union (feature, \"%s\");\n", | |
2104 | type->name); | |
2105 | for (int ix3 = 0; | |
2106 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2107 | ix3++) | |
2108 | { | |
2109 | printf_unfiltered | |
2110 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
2111 | f->type->name); | |
2112 | printf_unfiltered | |
2113 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2114 | f->name); | |
2115 | } | |
2116 | break; | |
2117 | case TDESC_TYPE_ENUM: | |
2118 | printf_unfiltered | |
2119 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", | |
2120 | type->name, type->u.u.size); | |
2121 | for (int ix3 = 0; | |
2122 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2123 | ix3++) | |
2124 | printf_unfiltered | |
2125 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", | |
2126 | f->start, f->name); | |
2127 | break; | |
2128 | default: | |
2129 | error (_("C output is not supported type \"%s\"."), type->name); | |
2130 | } | |
2131 | printf_unfiltered ("\n"); | |
2132 | } | |
2133 | ||
2134 | void visit (const tdesc_reg *reg) override | |
2135 | { | |
2136 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
2137 | reg->name, reg->target_regnum, reg->save_restore); | |
2138 | if (reg->group) | |
2139 | printf_unfiltered ("\"%s\", ", reg->group); | |
2140 | else | |
2141 | printf_unfiltered ("NULL, "); | |
2142 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
2143 | } | |
2144 | ||
25aa13e5 YQ |
2145 | protected: |
2146 | std::string m_filename_after_features; | |
2147 | ||
6eb1e6a8 YQ |
2148 | private: |
2149 | char *m_function; | |
6eb1e6a8 YQ |
2150 | bool m_printed_field_type = false; |
2151 | bool m_printed_type = false; | |
2152 | }; | |
2153 | ||
25aa13e5 YQ |
2154 | /* Print target description feature in C. */ |
2155 | ||
2156 | class print_c_feature : public print_c_tdesc | |
2157 | { | |
2158 | public: | |
2159 | print_c_feature (std::string &file) | |
2160 | : print_c_tdesc (file) | |
2161 | { | |
2162 | /* Trim ".tmp". */ | |
2163 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
2164 | ||
2165 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
2166 | } | |
2167 | ||
2168 | void visit_pre (const target_desc *e) override | |
2169 | { | |
2170 | printf_unfiltered (" Original: %s */\n\n", | |
2171 | lbasename (m_filename_after_features.c_str ())); | |
2172 | ||
f49ff000 | 2173 | printf_unfiltered ("#include \"arch/tdesc.h\"\n"); |
25aa13e5 YQ |
2174 | printf_unfiltered ("\n"); |
2175 | } | |
2176 | ||
2177 | void visit_post (const target_desc *e) override | |
2178 | {} | |
2179 | ||
2180 | void visit_pre (const tdesc_feature *e) override | |
2181 | { | |
2182 | std::string name (m_filename_after_features); | |
2183 | ||
2184 | auto pos = name.find_first_of ('.'); | |
2185 | ||
2186 | name = name.substr (0, pos); | |
2187 | std::replace (name.begin (), name.end (), '/', '_'); | |
2188 | std::replace (name.begin (), name.end (), '-', '_'); | |
2189 | ||
2190 | printf_unfiltered ("static int\n"); | |
2191 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
2192 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
2193 | ||
2194 | printf_unfiltered ("{\n"); | |
2195 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
0abe8a89 YQ |
2196 | |
2197 | printf_unfiltered | |
2198 | ("\n feature = tdesc_create_feature (result, \"%s\", \"%s\");\n", | |
2199 | e->name, lbasename (m_filename_after_features.c_str ())); | |
25aa13e5 YQ |
2200 | } |
2201 | ||
2202 | void visit_post (const tdesc_feature *e) override | |
2203 | { | |
2204 | printf_unfiltered (" return regnum;\n"); | |
2205 | printf_unfiltered ("}\n"); | |
2206 | } | |
2207 | ||
2208 | void visit (const tdesc_reg *reg) override | |
2209 | { | |
ea03d0d3 YQ |
2210 | /* Most "reg" in XML target descriptions don't have "regnum" |
2211 | attribute, so the register number is allocated sequentially. | |
2212 | In case that reg has "regnum" attribute, register number | |
2213 | should be set by that explicitly. */ | |
2214 | ||
2215 | if (reg->target_regnum < m_next_regnum) | |
2216 | { | |
2217 | /* The integrity check, it can catch some errors on register | |
2218 | number collision, like this, | |
2219 | ||
2220 | <reg name="x0" bitsize="32"/> | |
2221 | <reg name="x1" bitsize="32"/> | |
2222 | <reg name="x2" bitsize="32"/> | |
2223 | <reg name="x3" bitsize="32"/> | |
2224 | <reg name="ps" bitsize="32" regnum="3"/> | |
2225 | ||
2226 | but it also has false negatives. The target description | |
2227 | below is correct, | |
2228 | ||
2229 | <reg name="x1" bitsize="32" regnum="1"/> | |
2230 | <reg name="x3" bitsize="32" regnum="3"/> | |
2231 | <reg name="x2" bitsize="32" regnum="2"/> | |
2232 | <reg name="x4" bitsize="32" regnum="4"/> | |
2233 | ||
2234 | but it is not a good practice, so still error on this, | |
2235 | and also print the message so that it can be saved in the | |
2236 | generated c file. */ | |
2237 | ||
2238 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
2239 | reg->target_regnum); | |
2240 | printf_unfiltered ("is not the largest number (%d).\n", | |
2241 | m_next_regnum); | |
2242 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
2243 | reg->target_regnum, m_next_regnum); | |
2244 | } | |
2245 | ||
2246 | if (reg->target_regnum > m_next_regnum) | |
2247 | { | |
2248 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
2249 | m_next_regnum = reg->target_regnum; | |
2250 | } | |
2251 | ||
25aa13e5 YQ |
2252 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
2253 | reg->name, reg->save_restore); | |
2254 | if (reg->group) | |
2255 | printf_unfiltered ("\"%s\", ", reg->group); | |
2256 | else | |
2257 | printf_unfiltered ("NULL, "); | |
2258 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
ea03d0d3 YQ |
2259 | |
2260 | m_next_regnum++; | |
25aa13e5 YQ |
2261 | } |
2262 | ||
ea03d0d3 YQ |
2263 | private: |
2264 | /* The register number to use for the next register we see. */ | |
2265 | int m_next_regnum = 0; | |
25aa13e5 YQ |
2266 | }; |
2267 | ||
81adfced | 2268 | static void |
e100df1a | 2269 | maint_print_c_tdesc_cmd (const char *args, int from_tty) |
81adfced DJ |
2270 | { |
2271 | const struct target_desc *tdesc; | |
6eb1e6a8 | 2272 | const char *filename; |
81adfced | 2273 | |
8e2141c6 YQ |
2274 | if (args == NULL) |
2275 | { | |
2276 | /* Use the global target-supplied description, not the current | |
2277 | architecture's. This lets a GDB for one architecture generate C | |
2278 | for another architecture's description, even though the gdbarch | |
2279 | initialization code will reject the new description. */ | |
2280 | tdesc = current_target_desc; | |
2281 | filename = target_description_filename; | |
2282 | } | |
2283 | else | |
2284 | { | |
2285 | /* Use the target description from the XML file. */ | |
2286 | filename = args; | |
2287 | tdesc = file_read_description_xml (filename); | |
2288 | } | |
2289 | ||
81adfced DJ |
2290 | if (tdesc == NULL) |
2291 | error (_("There is no target description to print.")); | |
2292 | ||
8e2141c6 | 2293 | if (filename == NULL) |
81adfced DJ |
2294 | error (_("The current target description did not come from an XML file.")); |
2295 | ||
6eb1e6a8 YQ |
2296 | std::string filename_after_features (filename); |
2297 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 2298 | |
6eb1e6a8 YQ |
2299 | if (loc != std::string::npos) |
2300 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 2301 | |
25aa13e5 YQ |
2302 | /* Print c files for target features instead of target descriptions, |
2303 | because c files got from target features are more flexible than the | |
2304 | counterparts. */ | |
6c73f67f YQ |
2305 | if (startswith (filename_after_features.c_str (), "i386/32bit-") |
2306 | || startswith (filename_after_features.c_str (), "i386/64bit-") | |
506fe5f4 | 2307 | || startswith (filename_after_features.c_str (), "i386/x32-core.xml") |
49bdb7ee AH |
2308 | || startswith (filename_after_features.c_str (), "tic6x-") |
2309 | || startswith (filename_after_features.c_str (), "aarch64")) | |
25aa13e5 YQ |
2310 | { |
2311 | print_c_feature v (filename_after_features); | |
81adfced | 2312 | |
25aa13e5 YQ |
2313 | tdesc->accept (v); |
2314 | } | |
2315 | else | |
2316 | { | |
2317 | print_c_tdesc v (filename_after_features); | |
2318 | ||
2319 | tdesc->accept (v); | |
2320 | } | |
81adfced DJ |
2321 | } |
2322 | ||
27d41eac YQ |
2323 | namespace selftests { |
2324 | ||
2325 | static std::vector<std::pair<const char*, const target_desc *>> xml_tdesc; | |
2326 | ||
2327 | #if GDB_SELF_TEST | |
2328 | ||
2329 | /* See target-descritpions.h. */ | |
2330 | ||
2331 | void | |
2332 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
2333 | { | |
2334 | xml_tdesc.emplace_back (xml_file, tdesc); | |
2335 | } | |
2336 | #endif | |
2337 | ||
2338 | } | |
2339 | ||
2340 | /* Check that the target descriptions created dynamically by | |
2341 | architecture-specific code equal the descriptions created from XML files | |
2342 | found in the specified directory DIR. */ | |
2343 | ||
2344 | static void | |
e100df1a | 2345 | maintenance_check_xml_descriptions (const char *dir, int from_tty) |
27d41eac YQ |
2346 | { |
2347 | if (dir == NULL) | |
2348 | error (_("Missing dir name")); | |
2349 | ||
2350 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
2351 | std::string feature_dir (dir1.get ()); | |
2352 | unsigned int failed = 0; | |
2353 | ||
2354 | for (auto const &e : selftests::xml_tdesc) | |
2355 | { | |
2356 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.first); | |
2357 | const target_desc *tdesc | |
2358 | = file_read_description_xml (tdesc_xml.data ()); | |
2359 | ||
2360 | if (tdesc == NULL || *tdesc != *e.second) | |
2361 | failed++; | |
2362 | } | |
2363 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
2364 | (long) selftests::xml_tdesc.size (), failed); | |
2365 | } | |
2366 | ||
23181151 DJ |
2367 | void |
2368 | _initialize_target_descriptions (void) | |
2369 | { | |
123dc839 DJ |
2370 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
2371 | ||
23181151 DJ |
2372 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
2373 | Set target description specific variables."), | |
2374 | &tdesc_set_cmdlist, "set tdesc ", | |
2375 | 0 /* allow-unknown */, &setlist); | |
2376 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
2377 | Show target description specific variables."), | |
2378 | &tdesc_show_cmdlist, "show tdesc ", | |
2379 | 0 /* allow-unknown */, &showlist); | |
2380 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2381 | Unset target description specific variables."), | |
2382 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2383 | 0 /* allow-unknown */, &unsetlist); | |
2384 | ||
2385 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2386 | &tdesc_filename_cmd_string, |
23181151 DJ |
2387 | _("\ |
2388 | Set the file to read for an XML target description"), _("\ | |
2389 | Show the file to read for an XML target description"), _("\ | |
2390 | When set, GDB will read the target description from a local\n\ | |
2391 | file instead of querying the remote target."), | |
2392 | set_tdesc_filename_cmd, | |
2393 | show_tdesc_filename_cmd, | |
2394 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2395 | ||
2396 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2397 | Unset the file to read for an XML target description. When unset,\n\ | |
2398 | GDB will read the description from the target."), | |
2399 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2400 | |
2401 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2402 | Print the current target description as a C source file."), | |
2403 | &maintenanceprintlist); | |
27d41eac YQ |
2404 | |
2405 | cmd_list_element *cmd; | |
2406 | ||
2407 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
2408 | maintenance_check_xml_descriptions, _("\ | |
2409 | Check the target descriptions created in GDB equal the descriptions\n\ | |
2410 | created from XML files in the directory.\n\ | |
2411 | The parameter is the directory name."), | |
2412 | &maintenancechecklist); | |
2413 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 2414 | } |