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 | ||
29709017 DJ |
64 | typedef struct property |
65 | { | |
23181151 DJ |
66 | char *key; |
67 | char *value; | |
29709017 DJ |
68 | } property_s; |
69 | DEF_VEC_O(property_s); | |
70 | ||
123dc839 DJ |
71 | /* An individual register from a target description. */ |
72 | ||
6eb1e6a8 | 73 | typedef struct tdesc_reg : tdesc_element |
123dc839 | 74 | { |
72ddacb7 YQ |
75 | tdesc_reg (struct tdesc_feature *feature, const char *name_, |
76 | int regnum, int save_restore_, const char *group_, | |
77 | int bitsize_, const char *type_) | |
78 | : name (xstrdup (name_)), target_regnum (regnum), | |
79 | save_restore (save_restore_), | |
80 | group (group_ != NULL ? xstrdup (group_) : NULL), | |
81 | bitsize (bitsize_), | |
82 | type (type_ != NULL ? xstrdup (type_) : xstrdup ("<unknown>")) | |
83 | { | |
84 | /* If the register's type is target-defined, look it up now. We may not | |
85 | have easy access to the containing feature when we want it later. */ | |
86 | tdesc_type = tdesc_named_type (feature, type); | |
87 | } | |
88 | ||
6eb1e6a8 | 89 | virtual ~tdesc_reg () |
72ddacb7 YQ |
90 | { |
91 | xfree (name); | |
92 | xfree (type); | |
93 | xfree (group); | |
94 | } | |
95 | ||
96 | /* Disable copying. */ | |
97 | tdesc_reg (const tdesc_reg &) = delete; | |
98 | tdesc_reg &operator= (const tdesc_reg &) = delete; | |
99 | ||
123dc839 DJ |
100 | /* The name of this register. In standard features, it may be |
101 | recognized by the architecture support code, or it may be purely | |
102 | for the user. */ | |
103 | char *name; | |
104 | ||
105 | /* The register number used by this target to refer to this | |
106 | register. This is used for remote p/P packets and to determine | |
107 | the ordering of registers in the remote g/G packets. */ | |
108 | long target_regnum; | |
109 | ||
110 | /* If this flag is set, GDB should save and restore this register | |
111 | around calls to an inferior function. */ | |
112 | int save_restore; | |
113 | ||
114 | /* The name of the register group containing this register, or NULL | |
115 | if the group should be automatically determined from the | |
116 | register's type. If this is "general", "float", or "vector", the | |
117 | corresponding "info" command should display this register's | |
118 | value. It can be an arbitrary string, but should be limited to | |
119 | alphanumeric characters and internal hyphens. Currently other | |
120 | strings are ignored (treated as NULL). */ | |
121 | char *group; | |
122 | ||
123 | /* The size of the register, in bits. */ | |
124 | int bitsize; | |
125 | ||
126 | /* The type of the register. This string corresponds to either | |
127 | a named type from the target description or a predefined | |
128 | type from GDB. */ | |
129 | char *type; | |
130 | ||
131 | /* The target-described type corresponding to TYPE, if found. */ | |
ad068eab | 132 | struct tdesc_type *tdesc_type; |
6eb1e6a8 YQ |
133 | |
134 | void accept (tdesc_element_visitor &v) const override | |
135 | { | |
136 | v.visit (this); | |
137 | } | |
138 | ||
27d41eac YQ |
139 | bool operator== (const tdesc_reg &other) const |
140 | { | |
141 | return (streq (name, other.name) | |
142 | && target_regnum == other.target_regnum | |
143 | && save_restore == other.save_restore | |
144 | && bitsize == other.bitsize | |
145 | && (group == other.group || streq (group, other.group)) | |
146 | && streq (type, other.type)); | |
147 | } | |
148 | ||
149 | bool operator!= (const tdesc_reg &other) const | |
150 | { | |
151 | return !(*this == other); | |
152 | } | |
123dc839 DJ |
153 | } *tdesc_reg_p; |
154 | DEF_VEC_P(tdesc_reg_p); | |
155 | ||
156 | /* A named type from a target description. */ | |
ad068eab UW |
157 | |
158 | typedef struct tdesc_type_field | |
159 | { | |
160 | char *name; | |
161 | struct tdesc_type *type; | |
81516450 DE |
162 | /* For non-enum-values, either both are -1 (non-bitfield), or both are |
163 | not -1 (bitfield). For enum values, start is the value (which could be | |
164 | -1), end is -1. */ | |
f5dff777 | 165 | int start, end; |
ad068eab UW |
166 | } tdesc_type_field; |
167 | DEF_VEC_O(tdesc_type_field); | |
168 | ||
52059ffd TT |
169 | enum tdesc_type_kind |
170 | { | |
171 | /* Predefined types. */ | |
81516450 | 172 | TDESC_TYPE_BOOL, |
52059ffd TT |
173 | TDESC_TYPE_INT8, |
174 | TDESC_TYPE_INT16, | |
175 | TDESC_TYPE_INT32, | |
176 | TDESC_TYPE_INT64, | |
177 | TDESC_TYPE_INT128, | |
178 | TDESC_TYPE_UINT8, | |
179 | TDESC_TYPE_UINT16, | |
180 | TDESC_TYPE_UINT32, | |
181 | TDESC_TYPE_UINT64, | |
182 | TDESC_TYPE_UINT128, | |
183 | TDESC_TYPE_CODE_PTR, | |
184 | TDESC_TYPE_DATA_PTR, | |
185 | TDESC_TYPE_IEEE_SINGLE, | |
186 | TDESC_TYPE_IEEE_DOUBLE, | |
187 | TDESC_TYPE_ARM_FPA_EXT, | |
188 | TDESC_TYPE_I387_EXT, | |
189 | ||
190 | /* Types defined by a target feature. */ | |
191 | TDESC_TYPE_VECTOR, | |
192 | TDESC_TYPE_STRUCT, | |
193 | TDESC_TYPE_UNION, | |
81516450 DE |
194 | TDESC_TYPE_FLAGS, |
195 | TDESC_TYPE_ENUM | |
52059ffd TT |
196 | }; |
197 | ||
6eb1e6a8 | 198 | typedef struct tdesc_type : tdesc_element |
ad068eab | 199 | { |
72ddacb7 YQ |
200 | tdesc_type (const char *name_, enum tdesc_type_kind kind_) |
201 | : name (xstrdup (name_)), kind (kind_) | |
202 | { | |
203 | memset (&u, 0, sizeof (u)); | |
204 | } | |
205 | ||
6eb1e6a8 | 206 | virtual ~tdesc_type () |
72ddacb7 YQ |
207 | { |
208 | switch (kind) | |
209 | { | |
210 | case TDESC_TYPE_STRUCT: | |
211 | case TDESC_TYPE_UNION: | |
212 | case TDESC_TYPE_FLAGS: | |
213 | case TDESC_TYPE_ENUM: | |
214 | { | |
215 | struct tdesc_type_field *f; | |
216 | int ix; | |
217 | ||
218 | for (ix = 0; | |
219 | VEC_iterate (tdesc_type_field, u.u.fields, ix, f); | |
220 | ix++) | |
221 | xfree (f->name); | |
222 | ||
223 | VEC_free (tdesc_type_field, u.u.fields); | |
224 | } | |
225 | break; | |
226 | ||
227 | default: | |
228 | break; | |
229 | } | |
230 | xfree ((char *) name); | |
231 | } | |
232 | /* Disable copying. */ | |
233 | tdesc_type (const tdesc_type &) = delete; | |
234 | tdesc_type &operator= (const tdesc_type &) = delete; | |
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 | ||
305 | /* Disable copying. */ | |
306 | tdesc_feature (const tdesc_feature &) = delete; | |
307 | tdesc_feature &operator= (const tdesc_feature &) = delete; | |
308 | ||
123dc839 DJ |
309 | /* The name of this feature. It may be recognized by the architecture |
310 | support code. */ | |
311 | char *name; | |
312 | ||
313 | /* The registers associated with this feature. */ | |
72ddacb7 | 314 | VEC(tdesc_reg_p) *registers = NULL; |
123dc839 DJ |
315 | |
316 | /* The types associated with this feature. */ | |
72ddacb7 | 317 | VEC(tdesc_type_p) *types = NULL; |
6eb1e6a8 YQ |
318 | |
319 | void accept (tdesc_element_visitor &v) const override | |
320 | { | |
25aa13e5 | 321 | v.visit_pre (this); |
6eb1e6a8 YQ |
322 | |
323 | struct tdesc_type *type; | |
324 | ||
325 | for (int ix = 0; | |
326 | VEC_iterate (tdesc_type_p, types, ix, type); | |
327 | ix++) | |
328 | type->accept (v); | |
329 | ||
330 | struct tdesc_reg *reg; | |
331 | ||
332 | for (int ix = 0; | |
333 | VEC_iterate (tdesc_reg_p, registers, ix, reg); | |
334 | ix++) | |
335 | reg->accept (v); | |
336 | ||
6eb1e6a8 | 337 | |
25aa13e5 YQ |
338 | v.visit_post (this); |
339 | } | |
27d41eac YQ |
340 | |
341 | bool operator== (const tdesc_feature &other) const | |
342 | { | |
343 | if (strcmp (name, other.name) != 0) | |
344 | return false; | |
345 | ||
346 | if (VEC_length (tdesc_reg_p, registers) | |
347 | != VEC_length (tdesc_reg_p, other.registers)) | |
348 | return false; | |
349 | ||
350 | struct tdesc_reg *reg; | |
351 | ||
352 | for (int ix = 0; | |
353 | VEC_iterate (tdesc_reg_p, registers, ix, reg); | |
354 | ix++) | |
355 | { | |
356 | tdesc_reg *reg2 | |
357 | = VEC_index (tdesc_reg_p, other.registers, ix); | |
358 | ||
359 | if (reg != reg2 && *reg != *reg2) | |
360 | return false; | |
361 | } | |
362 | ||
363 | if (VEC_length (tdesc_type_p, types) | |
364 | != VEC_length (tdesc_type_p, other.types)) | |
365 | return false; | |
366 | ||
367 | tdesc_type *type; | |
368 | ||
369 | for (int ix = 0; | |
370 | VEC_iterate (tdesc_type_p, types, ix, type); | |
371 | ix++) | |
372 | { | |
373 | tdesc_type *type2 | |
374 | = VEC_index (tdesc_type_p, other.types, ix); | |
375 | ||
376 | if (type != type2 && *type != *type2) | |
377 | return false; | |
378 | } | |
379 | ||
380 | return true; | |
381 | } | |
382 | ||
383 | bool operator!= (const tdesc_feature &other) const | |
384 | { | |
385 | return !(*this == other); | |
386 | } | |
387 | ||
123dc839 DJ |
388 | } *tdesc_feature_p; |
389 | DEF_VEC_P(tdesc_feature_p); | |
390 | ||
e35359c5 UW |
391 | /* A compatible architecture from a target description. */ |
392 | typedef const struct bfd_arch_info *arch_p; | |
393 | DEF_VEC_P(arch_p); | |
394 | ||
123dc839 DJ |
395 | /* A target description. */ |
396 | ||
6eb1e6a8 | 397 | struct target_desc : tdesc_element |
424163ea | 398 | { |
b468ff4c YQ |
399 | target_desc () |
400 | {} | |
401 | ||
6eb1e6a8 | 402 | virtual ~target_desc () |
b468ff4c YQ |
403 | { |
404 | struct tdesc_feature *feature; | |
405 | struct property *prop; | |
406 | int ix; | |
407 | ||
408 | for (ix = 0; | |
409 | VEC_iterate (tdesc_feature_p, features, ix, feature); | |
410 | ix++) | |
411 | delete feature; | |
412 | VEC_free (tdesc_feature_p, features); | |
413 | ||
414 | for (ix = 0; | |
415 | VEC_iterate (property_s, properties, ix, prop); | |
416 | ix++) | |
417 | { | |
418 | xfree (prop->key); | |
419 | xfree (prop->value); | |
420 | } | |
421 | ||
422 | VEC_free (property_s, properties); | |
423 | VEC_free (arch_p, compatible); | |
424 | } | |
425 | ||
426 | target_desc (const target_desc &) = delete; | |
427 | void operator= (const target_desc &) = delete; | |
428 | ||
23181151 | 429 | /* The architecture reported by the target, if any. */ |
b468ff4c | 430 | const struct bfd_arch_info *arch = NULL; |
23181151 | 431 | |
08d16641 PA |
432 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
433 | otherwise. */ | |
b468ff4c | 434 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 435 | |
e35359c5 | 436 | /* The list of compatible architectures reported by the target. */ |
b468ff4c | 437 | VEC(arch_p) *compatible = NULL; |
e35359c5 | 438 | |
29709017 | 439 | /* Any architecture-specific properties specified by the target. */ |
b468ff4c | 440 | VEC(property_s) *properties = NULL; |
123dc839 DJ |
441 | |
442 | /* The features associated with this target. */ | |
b468ff4c | 443 | VEC(tdesc_feature_p) *features = NULL; |
6eb1e6a8 YQ |
444 | |
445 | void accept (tdesc_element_visitor &v) const override | |
446 | { | |
447 | v.visit_pre (this); | |
448 | ||
449 | struct tdesc_feature *feature; | |
450 | ||
451 | for (int ix = 0; | |
452 | VEC_iterate (tdesc_feature_p, features, ix, feature); | |
453 | ix++) | |
454 | feature->accept (v); | |
455 | ||
456 | v.visit_post (this); | |
457 | } | |
27d41eac YQ |
458 | |
459 | bool operator== (const target_desc &other) const | |
460 | { | |
461 | if (arch != other.arch) | |
462 | return false; | |
463 | ||
464 | if (osabi != other.osabi) | |
465 | return false; | |
466 | ||
467 | if (VEC_length (tdesc_feature_p, features) | |
468 | != VEC_length (tdesc_feature_p, other.features)) | |
469 | return false; | |
470 | ||
471 | struct tdesc_feature *feature; | |
472 | ||
473 | for (int ix = 0; | |
474 | VEC_iterate (tdesc_feature_p, features, ix, feature); | |
475 | ix++) | |
476 | { | |
477 | struct tdesc_feature *feature2 | |
478 | = VEC_index (tdesc_feature_p, other.features, ix); | |
479 | ||
480 | if (feature != feature2 && *feature != *feature2) | |
481 | return false; | |
482 | } | |
483 | ||
484 | return true; | |
485 | } | |
486 | ||
487 | bool operator!= (const target_desc &other) const | |
488 | { | |
489 | return !(*this == other); | |
490 | } | |
123dc839 DJ |
491 | }; |
492 | ||
493 | /* Per-architecture data associated with a target description. The | |
494 | target description may be shared by multiple architectures, but | |
495 | this data is private to one gdbarch. */ | |
496 | ||
ad068eab UW |
497 | typedef struct tdesc_arch_reg |
498 | { | |
499 | struct tdesc_reg *reg; | |
500 | struct type *type; | |
501 | } tdesc_arch_reg; | |
502 | DEF_VEC_O(tdesc_arch_reg); | |
503 | ||
123dc839 DJ |
504 | struct tdesc_arch_data |
505 | { | |
ad068eab | 506 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
507 | During initialization of the gdbarch this list is used to store |
508 | registers which the architecture assigns a fixed register number. | |
509 | Registers which are NULL in this array, or off the end, are | |
510 | treated as zero-sized and nameless (i.e. placeholders in the | |
511 | numbering). */ | |
ad068eab | 512 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
513 | |
514 | /* Functions which report the register name, type, and reggroups for | |
515 | pseudo-registers. */ | |
516 | gdbarch_register_name_ftype *pseudo_register_name; | |
517 | gdbarch_register_type_ftype *pseudo_register_type; | |
518 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
519 | }; |
520 | ||
6ecd4729 PA |
521 | /* Info about an inferior's target description. There's one of these |
522 | for each inferior. */ | |
424163ea | 523 | |
6ecd4729 PA |
524 | struct target_desc_info |
525 | { | |
526 | /* A flag indicating that a description has already been fetched | |
527 | from the target, so it should not be queried again. */ | |
528 | ||
529 | int fetched; | |
424163ea | 530 | |
6ecd4729 PA |
531 | /* The description fetched from the target, or NULL if the target |
532 | did not supply any description. Only valid when | |
533 | target_desc_fetched is set. Only the description initialization | |
534 | code should access this; normally, the description should be | |
535 | accessed through the gdbarch object. */ | |
424163ea | 536 | |
6ecd4729 | 537 | const struct target_desc *tdesc; |
424163ea | 538 | |
6ecd4729 PA |
539 | /* The filename to read a target description from, as set by "set |
540 | tdesc filename ..." */ | |
424163ea | 541 | |
6ecd4729 PA |
542 | char *filename; |
543 | }; | |
23181151 | 544 | |
6ecd4729 PA |
545 | /* Get the inferior INF's target description info, allocating one on |
546 | the stop if necessary. */ | |
23181151 | 547 | |
6ecd4729 PA |
548 | static struct target_desc_info * |
549 | get_tdesc_info (struct inferior *inf) | |
550 | { | |
551 | if (inf->tdesc_info == NULL) | |
552 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
553 | return inf->tdesc_info; | |
554 | } | |
23181151 | 555 | |
123dc839 DJ |
556 | /* A handle for architecture-specific data associated with the |
557 | target description (see struct tdesc_arch_data). */ | |
558 | ||
559 | static struct gdbarch_data *tdesc_data; | |
560 | ||
6ecd4729 PA |
561 | /* See target-descriptions.h. */ |
562 | ||
563 | int | |
564 | target_desc_info_from_user_p (struct target_desc_info *info) | |
565 | { | |
566 | return info != NULL && info->filename != NULL; | |
567 | } | |
568 | ||
569 | /* See target-descriptions.h. */ | |
570 | ||
571 | void | |
572 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
573 | { | |
574 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
575 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
576 | ||
577 | dest->fetched = src->fetched; | |
578 | dest->tdesc = src->tdesc; | |
579 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
580 | } | |
581 | ||
582 | /* See target-descriptions.h. */ | |
583 | ||
584 | void | |
585 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
586 | { | |
587 | if (tdesc_info != NULL) | |
588 | { | |
589 | xfree (tdesc_info->filename); | |
590 | xfree (tdesc_info); | |
591 | } | |
592 | } | |
593 | ||
594 | /* Convenience helper macros. */ | |
595 | ||
596 | #define target_desc_fetched \ | |
597 | get_tdesc_info (current_inferior ())->fetched | |
598 | #define current_target_desc \ | |
599 | get_tdesc_info (current_inferior ())->tdesc | |
600 | #define target_description_filename \ | |
601 | get_tdesc_info (current_inferior ())->filename | |
602 | ||
603 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
604 | ||
605 | static char *tdesc_filename_cmd_string; | |
606 | ||
424163ea DJ |
607 | /* Fetch the current target's description, and switch the current |
608 | architecture to one which incorporates that description. */ | |
609 | ||
610 | void | |
611 | target_find_description (void) | |
612 | { | |
613 | /* If we've already fetched a description from the target, don't do | |
614 | it again. This allows a target to fetch the description early, | |
615 | during its to_open or to_create_inferior, if it needs extra | |
616 | information about the target to initialize. */ | |
617 | if (target_desc_fetched) | |
618 | return; | |
619 | ||
620 | /* The current architecture should not have any target description | |
621 | specified. It should have been cleared, e.g. when we | |
622 | disconnected from the previous target. */ | |
f5656ead | 623 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 624 | |
23181151 DJ |
625 | /* First try to fetch an XML description from the user-specified |
626 | file. */ | |
627 | current_target_desc = NULL; | |
628 | if (target_description_filename != NULL | |
629 | && *target_description_filename != '\0') | |
630 | current_target_desc | |
631 | = file_read_description_xml (target_description_filename); | |
632 | ||
633 | /* Next try to read the description from the current target using | |
634 | target objects. */ | |
635 | if (current_target_desc == NULL) | |
636 | current_target_desc = target_read_description_xml (¤t_target); | |
637 | ||
638 | /* If that failed try a target-specific hook. */ | |
639 | if (current_target_desc == NULL) | |
640 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
641 | |
642 | /* If a non-NULL description was returned, then update the current | |
643 | architecture. */ | |
644 | if (current_target_desc) | |
645 | { | |
646 | struct gdbarch_info info; | |
647 | ||
648 | gdbarch_info_init (&info); | |
649 | info.target_desc = current_target_desc; | |
650 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
651 | warning (_("Architecture rejected target-supplied description")); |
652 | else | |
653 | { | |
654 | struct tdesc_arch_data *data; | |
655 | ||
19ba03f4 SM |
656 | data = ((struct tdesc_arch_data *) |
657 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 658 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 659 | && data->arch_regs == NULL) |
123dc839 DJ |
660 | warning (_("Target-supplied registers are not supported " |
661 | "by the current architecture")); | |
662 | } | |
424163ea DJ |
663 | } |
664 | ||
665 | /* Now that we know this description is usable, record that we | |
666 | fetched it. */ | |
667 | target_desc_fetched = 1; | |
668 | } | |
669 | ||
670 | /* Discard any description fetched from the current target, and switch | |
671 | the current architecture to one with no target description. */ | |
672 | ||
673 | void | |
674 | target_clear_description (void) | |
675 | { | |
676 | struct gdbarch_info info; | |
677 | ||
678 | if (!target_desc_fetched) | |
679 | return; | |
680 | ||
681 | target_desc_fetched = 0; | |
682 | current_target_desc = NULL; | |
683 | ||
684 | gdbarch_info_init (&info); | |
685 | if (!gdbarch_update_p (info)) | |
686 | internal_error (__FILE__, __LINE__, | |
687 | _("Could not remove target-supplied description")); | |
688 | } | |
689 | ||
690 | /* Return the global current target description. This should only be | |
691 | used by gdbarch initialization code; most access should be through | |
692 | an existing gdbarch. */ | |
693 | ||
694 | const struct target_desc * | |
695 | target_current_description (void) | |
696 | { | |
697 | if (target_desc_fetched) | |
698 | return current_target_desc; | |
699 | ||
700 | return NULL; | |
701 | } | |
e35359c5 UW |
702 | |
703 | /* Return non-zero if this target description is compatible | |
704 | with the given BFD architecture. */ | |
705 | ||
706 | int | |
707 | tdesc_compatible_p (const struct target_desc *target_desc, | |
708 | const struct bfd_arch_info *arch) | |
709 | { | |
710 | const struct bfd_arch_info *compat; | |
711 | int ix; | |
712 | ||
713 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
714 | ix++) | |
715 | { | |
716 | if (compat == arch | |
717 | || arch->compatible (arch, compat) | |
718 | || compat->compatible (compat, arch)) | |
719 | return 1; | |
720 | } | |
721 | ||
722 | return 0; | |
723 | } | |
23181151 DJ |
724 | \f |
725 | ||
123dc839 | 726 | /* Direct accessors for target descriptions. */ |
424163ea | 727 | |
29709017 DJ |
728 | /* Return the string value of a property named KEY, or NULL if the |
729 | property was not specified. */ | |
730 | ||
731 | const char * | |
732 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
733 | { | |
734 | struct property *prop; | |
735 | int ix; | |
736 | ||
737 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
738 | ix++) | |
739 | if (strcmp (prop->key, key) == 0) | |
740 | return prop->value; | |
741 | ||
742 | return NULL; | |
743 | } | |
744 | ||
23181151 DJ |
745 | /* Return the BFD architecture associated with this target |
746 | description, or NULL if no architecture was specified. */ | |
747 | ||
748 | const struct bfd_arch_info * | |
749 | tdesc_architecture (const struct target_desc *target_desc) | |
750 | { | |
751 | return target_desc->arch; | |
752 | } | |
08d16641 PA |
753 | |
754 | /* Return the OSABI associated with this target description, or | |
755 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
756 | ||
757 | enum gdb_osabi | |
758 | tdesc_osabi (const struct target_desc *target_desc) | |
759 | { | |
760 | return target_desc->osabi; | |
761 | } | |
762 | ||
23181151 DJ |
763 | \f |
764 | ||
123dc839 DJ |
765 | /* Return 1 if this target description includes any registers. */ |
766 | ||
767 | int | |
768 | tdesc_has_registers (const struct target_desc *target_desc) | |
769 | { | |
770 | int ix; | |
771 | struct tdesc_feature *feature; | |
772 | ||
773 | if (target_desc == NULL) | |
774 | return 0; | |
775 | ||
776 | for (ix = 0; | |
777 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
778 | ix++) | |
779 | if (! VEC_empty (tdesc_reg_p, feature->registers)) | |
780 | return 1; | |
781 | ||
782 | return 0; | |
783 | } | |
784 | ||
785 | /* Return the feature with the given name, if present, or NULL if | |
786 | the named feature is not found. */ | |
787 | ||
788 | const struct tdesc_feature * | |
789 | tdesc_find_feature (const struct target_desc *target_desc, | |
790 | const char *name) | |
791 | { | |
792 | int ix; | |
793 | struct tdesc_feature *feature; | |
794 | ||
795 | for (ix = 0; | |
796 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
797 | ix++) | |
798 | if (strcmp (feature->name, name) == 0) | |
799 | return feature; | |
800 | ||
801 | return NULL; | |
802 | } | |
803 | ||
804 | /* Return the name of FEATURE. */ | |
805 | ||
806 | const char * | |
807 | tdesc_feature_name (const struct tdesc_feature *feature) | |
808 | { | |
809 | return feature->name; | |
810 | } | |
811 | ||
ad068eab UW |
812 | /* Predefined types. */ |
813 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 814 | { |
81516450 | 815 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
816 | { "int8", TDESC_TYPE_INT8 }, |
817 | { "int16", TDESC_TYPE_INT16 }, | |
818 | { "int32", TDESC_TYPE_INT32 }, | |
819 | { "int64", TDESC_TYPE_INT64 }, | |
820 | { "int128", TDESC_TYPE_INT128 }, | |
821 | { "uint8", TDESC_TYPE_UINT8 }, | |
822 | { "uint16", TDESC_TYPE_UINT16 }, | |
823 | { "uint32", TDESC_TYPE_UINT32 }, | |
824 | { "uint64", TDESC_TYPE_UINT64 }, | |
825 | { "uint128", TDESC_TYPE_UINT128 }, | |
826 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
827 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
828 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
829 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 830 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 831 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 832 | }; |
81adfced | 833 | |
81516450 DE |
834 | /* Lookup a predefined type. */ |
835 | ||
836 | static struct tdesc_type * | |
837 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
838 | { | |
839 | int ix; | |
840 | struct tdesc_type *type; | |
841 | ||
842 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
843 | if (tdesc_predefined_types[ix].kind == kind) | |
844 | return &tdesc_predefined_types[ix]; | |
845 | ||
846 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
847 | } | |
848 | ||
123dc839 DJ |
849 | /* Return the type associated with ID in the context of FEATURE, or |
850 | NULL if none. */ | |
851 | ||
ad068eab | 852 | struct tdesc_type * |
123dc839 DJ |
853 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
854 | { | |
855 | int ix; | |
ad068eab | 856 | struct tdesc_type *type; |
123dc839 DJ |
857 | |
858 | /* First try target-defined types. */ | |
ad068eab UW |
859 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
860 | if (strcmp (type->name, id) == 0) | |
861 | return type; | |
123dc839 | 862 | |
81adfced DJ |
863 | /* Next try the predefined types. */ |
864 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
865 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 866 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
867 | |
868 | return NULL; | |
869 | } | |
ad068eab | 870 | |
9fd3625f L |
871 | /* Lookup type associated with ID. */ |
872 | ||
873 | struct type * | |
874 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
875 | { | |
876 | struct tdesc_arch_reg *reg; | |
877 | struct tdesc_arch_data *data; | |
878 | int i, num_regs; | |
879 | ||
19ba03f4 | 880 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
9fd3625f L |
881 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); |
882 | for (i = 0; i < num_regs; i++) | |
883 | { | |
884 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); | |
885 | if (reg->reg | |
886 | && reg->reg->tdesc_type | |
887 | && reg->type | |
888 | && strcmp (id, reg->reg->tdesc_type->name) == 0) | |
889 | return reg->type; | |
890 | } | |
891 | ||
892 | return NULL; | |
893 | } | |
894 | ||
ad068eab UW |
895 | /* Construct, if necessary, and return the GDB type implementing target |
896 | type TDESC_TYPE for architecture GDBARCH. */ | |
897 | ||
898 | static struct type * | |
899 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
900 | { | |
9fd3625f L |
901 | struct type *type; |
902 | ||
ad068eab UW |
903 | switch (tdesc_type->kind) |
904 | { | |
905 | /* Predefined types. */ | |
81516450 DE |
906 | case TDESC_TYPE_BOOL: |
907 | return builtin_type (gdbarch)->builtin_bool; | |
908 | ||
ad068eab | 909 | case TDESC_TYPE_INT8: |
df4df182 | 910 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
911 | |
912 | case TDESC_TYPE_INT16: | |
df4df182 | 913 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
914 | |
915 | case TDESC_TYPE_INT32: | |
df4df182 | 916 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
917 | |
918 | case TDESC_TYPE_INT64: | |
df4df182 | 919 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
920 | |
921 | case TDESC_TYPE_INT128: | |
df4df182 | 922 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
923 | |
924 | case TDESC_TYPE_UINT8: | |
df4df182 | 925 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
926 | |
927 | case TDESC_TYPE_UINT16: | |
df4df182 | 928 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
929 | |
930 | case TDESC_TYPE_UINT32: | |
df4df182 | 931 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
932 | |
933 | case TDESC_TYPE_UINT64: | |
df4df182 | 934 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
935 | |
936 | case TDESC_TYPE_UINT128: | |
df4df182 | 937 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
938 | |
939 | case TDESC_TYPE_CODE_PTR: | |
940 | return builtin_type (gdbarch)->builtin_func_ptr; | |
941 | ||
942 | case TDESC_TYPE_DATA_PTR: | |
943 | return builtin_type (gdbarch)->builtin_data_ptr; | |
944 | ||
9fd3625f L |
945 | default: |
946 | break; | |
947 | } | |
948 | ||
949 | type = tdesc_find_type (gdbarch, tdesc_type->name); | |
950 | if (type) | |
951 | return type; | |
952 | ||
953 | switch (tdesc_type->kind) | |
954 | { | |
ad068eab | 955 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 956 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 957 | floatformats_ieee_single); |
ad068eab UW |
958 | |
959 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 960 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 961 | floatformats_ieee_double); |
ad068eab UW |
962 | |
963 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 964 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 965 | floatformats_arm_ext); |
ad068eab | 966 | |
9fd3625f L |
967 | case TDESC_TYPE_I387_EXT: |
968 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
969 | floatformats_i387_ext); | |
970 | ||
ad068eab UW |
971 | /* Types defined by a target feature. */ |
972 | case TDESC_TYPE_VECTOR: | |
973 | { | |
974 | struct type *type, *field_type; | |
975 | ||
976 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
977 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
978 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
979 | ||
980 | return type; | |
981 | } | |
982 | ||
f5dff777 DJ |
983 | case TDESC_TYPE_STRUCT: |
984 | { | |
985 | struct type *type, *field_type; | |
986 | struct tdesc_type_field *f; | |
987 | int ix; | |
988 | ||
989 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); | |
990 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
991 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
992 | ||
993 | for (ix = 0; | |
994 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
995 | ix++) | |
996 | { | |
81516450 | 997 | if (f->start != -1 && f->end != -1) |
f5dff777 DJ |
998 | { |
999 | /* Bitfield. */ | |
1000 | struct field *fld; | |
1001 | struct type *field_type; | |
1002 | int bitsize, total_size; | |
1003 | ||
81516450 | 1004 | /* This invariant should be preserved while creating types. */ |
f5dff777 | 1005 | gdb_assert (tdesc_type->u.u.size != 0); |
81516450 DE |
1006 | if (f->type != NULL) |
1007 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
1008 | else if (tdesc_type->u.u.size > 4) | |
f5dff777 DJ |
1009 | field_type = builtin_type (gdbarch)->builtin_uint64; |
1010 | else | |
1011 | field_type = builtin_type (gdbarch)->builtin_uint32; | |
1012 | ||
1013 | fld = append_composite_type_field_raw (type, xstrdup (f->name), | |
1014 | field_type); | |
1015 | ||
1016 | /* For little-endian, BITPOS counts from the LSB of | |
1017 | the structure and marks the LSB of the field. For | |
1018 | big-endian, BITPOS counts from the MSB of the | |
1019 | structure and marks the MSB of the field. Either | |
1020 | way, it is the number of bits to the "left" of the | |
1021 | field. To calculate this in big-endian, we need | |
1022 | the total size of the structure. */ | |
1023 | bitsize = f->end - f->start + 1; | |
1024 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; | |
1025 | if (gdbarch_bits_big_endian (gdbarch)) | |
f41f5e61 | 1026 | SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize); |
f5dff777 | 1027 | else |
f41f5e61 | 1028 | SET_FIELD_BITPOS (fld[0], f->start); |
f5dff777 DJ |
1029 | FIELD_BITSIZE (fld[0]) = bitsize; |
1030 | } | |
1031 | else | |
1032 | { | |
81516450 | 1033 | gdb_assert (f->start == -1 && f->end == -1); |
f5dff777 DJ |
1034 | field_type = tdesc_gdb_type (gdbarch, f->type); |
1035 | append_composite_type_field (type, xstrdup (f->name), | |
1036 | field_type); | |
1037 | } | |
1038 | } | |
1039 | ||
1040 | if (tdesc_type->u.u.size != 0) | |
1041 | TYPE_LENGTH (type) = tdesc_type->u.u.size; | |
1042 | return type; | |
1043 | } | |
1044 | ||
ad068eab UW |
1045 | case TDESC_TYPE_UNION: |
1046 | { | |
1047 | struct type *type, *field_type; | |
1048 | struct tdesc_type_field *f; | |
1049 | int ix; | |
1050 | ||
e9bb382b | 1051 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
ad068eab UW |
1052 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
1053 | ||
1054 | for (ix = 0; | |
1055 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
1056 | ix++) | |
1057 | { | |
1058 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
1059 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
1060 | ||
f5dff777 | 1061 | /* If any of the children of a union are vectors, flag the |
ad068eab UW |
1062 | union as a vector also. This allows e.g. a union of two |
1063 | vector types to show up automatically in "info vector". */ | |
1064 | if (TYPE_VECTOR (field_type)) | |
1065 | TYPE_VECTOR (type) = 1; | |
1066 | } | |
f5dff777 DJ |
1067 | return type; |
1068 | } | |
1069 | ||
1070 | case TDESC_TYPE_FLAGS: | |
1071 | { | |
81516450 | 1072 | struct tdesc_type_field *f; |
f5dff777 DJ |
1073 | int ix; |
1074 | ||
3494b66d | 1075 | type = arch_flags_type (gdbarch, tdesc_type->name, |
81516450 DE |
1076 | tdesc_type->u.u.size); |
1077 | for (ix = 0; | |
1078 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
1079 | ix++) | |
1080 | { | |
1081 | struct type *field_type; | |
1082 | int bitsize = f->end - f->start + 1; | |
1083 | ||
1084 | gdb_assert (f->type != NULL); | |
1085 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
1086 | append_flags_type_field (type, f->start, bitsize, | |
1087 | field_type, f->name); | |
1088 | } | |
1089 | ||
1090 | return type; | |
1091 | } | |
1092 | ||
1093 | case TDESC_TYPE_ENUM: | |
1094 | { | |
1095 | struct tdesc_type_field *f; | |
1096 | int ix; | |
1097 | ||
1098 | type = arch_type (gdbarch, TYPE_CODE_ENUM, | |
1099 | tdesc_type->u.u.size, tdesc_type->name); | |
1100 | TYPE_UNSIGNED (type) = 1; | |
f5dff777 | 1101 | for (ix = 0; |
81516450 | 1102 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
f5dff777 | 1103 | ix++) |
81516450 DE |
1104 | { |
1105 | struct field *fld | |
1106 | = append_composite_type_field_raw (type, xstrdup (f->name), | |
1107 | NULL); | |
1108 | ||
1109 | SET_FIELD_BITPOS (fld[0], f->start); | |
1110 | } | |
ad068eab UW |
1111 | |
1112 | return type; | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | internal_error (__FILE__, __LINE__, | |
1117 | "Type \"%s\" has an unknown kind %d", | |
1118 | tdesc_type->name, tdesc_type->kind); | |
1119 | } | |
123dc839 DJ |
1120 | \f |
1121 | ||
1122 | /* Support for registers from target descriptions. */ | |
1123 | ||
1124 | /* Construct the per-gdbarch data. */ | |
1125 | ||
1126 | static void * | |
1127 | tdesc_data_init (struct obstack *obstack) | |
1128 | { | |
1129 | struct tdesc_arch_data *data; | |
1130 | ||
1131 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
1132 | return data; | |
1133 | } | |
1134 | ||
1135 | /* Similar, but for the temporary copy used during architecture | |
1136 | initialization. */ | |
1137 | ||
1138 | struct tdesc_arch_data * | |
1139 | tdesc_data_alloc (void) | |
1140 | { | |
41bf6aca | 1141 | return XCNEW (struct tdesc_arch_data); |
123dc839 DJ |
1142 | } |
1143 | ||
1144 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
1145 | to be used (for instance if it was unsuitable for the | |
1146 | architecture). */ | |
1147 | ||
1148 | void | |
1149 | tdesc_data_cleanup (void *data_untyped) | |
1150 | { | |
19ba03f4 | 1151 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 1152 | |
ad068eab | 1153 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
1154 | xfree (data); |
1155 | } | |
1156 | ||
1157 | /* Search FEATURE for a register named NAME. */ | |
1158 | ||
7cc46491 DJ |
1159 | static struct tdesc_reg * |
1160 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
1161 | const char *name) | |
123dc839 DJ |
1162 | { |
1163 | int ixr; | |
1164 | struct tdesc_reg *reg; | |
1165 | ||
1166 | for (ixr = 0; | |
1167 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1168 | ixr++) | |
1169 | if (strcasecmp (reg->name, name) == 0) | |
7cc46491 | 1170 | return reg; |
123dc839 | 1171 | |
7cc46491 DJ |
1172 | return NULL; |
1173 | } | |
1174 | ||
1175 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
1176 | ||
1177 | int | |
1178 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
1179 | struct tdesc_arch_data *data, | |
1180 | int regno, const char *name) | |
1181 | { | |
ad068eab | 1182 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
1183 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
1184 | ||
1185 | if (reg == NULL) | |
1186 | return 0; | |
1187 | ||
1188 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
1189 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
1190 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
1191 | ||
1192 | arch_reg.reg = reg; | |
1193 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 1194 | return 1; |
123dc839 DJ |
1195 | } |
1196 | ||
58d6951d DJ |
1197 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
1198 | register number to it. */ | |
1199 | ||
1200 | int | |
1201 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
1202 | const char *name) | |
1203 | { | |
1204 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1205 | ||
1206 | if (reg == NULL) | |
1207 | return 0; | |
1208 | ||
1209 | return 1; | |
1210 | } | |
1211 | ||
7cc46491 DJ |
1212 | /* Search FEATURE for a register whose name is in NAMES and assign |
1213 | REGNO to it. */ | |
123dc839 DJ |
1214 | |
1215 | int | |
1216 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
1217 | struct tdesc_arch_data *data, | |
1218 | int regno, const char *const names[]) | |
1219 | { | |
1220 | int i; | |
1221 | ||
1222 | for (i = 0; names[i] != NULL; i++) | |
1223 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
1224 | return 1; | |
1225 | ||
1226 | return 0; | |
1227 | } | |
1228 | ||
7cc46491 DJ |
1229 | /* Search FEATURE for a register named NAME, and return its size in |
1230 | bits. The register must exist. */ | |
1231 | ||
1232 | int | |
1233 | tdesc_register_size (const struct tdesc_feature *feature, | |
1234 | const char *name) | |
1235 | { | |
1236 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1237 | ||
1238 | gdb_assert (reg != NULL); | |
1239 | return reg->bitsize; | |
1240 | } | |
1241 | ||
123dc839 DJ |
1242 | /* Look up a register by its GDB internal register number. */ |
1243 | ||
ad068eab UW |
1244 | static struct tdesc_arch_reg * |
1245 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 1246 | { |
123dc839 DJ |
1247 | struct tdesc_arch_data *data; |
1248 | ||
19ba03f4 | 1249 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab UW |
1250 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
1251 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
1252 | else |
1253 | return NULL; | |
1254 | } | |
1255 | ||
ad068eab UW |
1256 | static struct tdesc_reg * |
1257 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
1258 | { | |
1259 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 1260 | |
ad068eab UW |
1261 | return reg? reg->reg : NULL; |
1262 | } | |
1263 | ||
f8b73d13 DJ |
1264 | /* Return the name of register REGNO, from the target description or |
1265 | from an architecture-provided pseudo_register_name method. */ | |
1266 | ||
1267 | const char * | |
d93859e2 | 1268 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 1269 | { |
d93859e2 UW |
1270 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1271 | int num_regs = gdbarch_num_regs (gdbarch); | |
1272 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
1273 | |
1274 | if (reg != NULL) | |
1275 | return reg->name; | |
1276 | ||
1277 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1278 | { | |
19ba03f4 SM |
1279 | struct tdesc_arch_data *data |
1280 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1281 | |
123dc839 | 1282 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 1283 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
1284 | } |
1285 | ||
1286 | return ""; | |
1287 | } | |
1288 | ||
58d6951d | 1289 | struct type * |
123dc839 DJ |
1290 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
1291 | { | |
ad068eab UW |
1292 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
1293 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1294 | int num_regs = gdbarch_num_regs (gdbarch); |
1295 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1296 | ||
1297 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1298 | { | |
19ba03f4 SM |
1299 | struct tdesc_arch_data *data |
1300 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1301 | |
123dc839 DJ |
1302 | gdb_assert (data->pseudo_register_type != NULL); |
1303 | return data->pseudo_register_type (gdbarch, regno); | |
1304 | } | |
1305 | ||
1306 | if (reg == NULL) | |
1307 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1308 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1309 | |
ad068eab | 1310 | if (arch_reg->type == NULL) |
123dc839 | 1311 | { |
ad068eab UW |
1312 | /* First check for a predefined or target defined type. */ |
1313 | if (reg->tdesc_type) | |
1314 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
1315 | ||
1316 | /* Next try size-sensitive type shortcuts. */ | |
1317 | else if (strcmp (reg->type, "float") == 0) | |
1318 | { | |
1319 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1320 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1321 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1322 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1323 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1324 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1325 | else | |
1326 | { | |
1327 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1328 | reg->name, reg->bitsize); | |
1329 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1330 | } | |
1331 | } | |
1332 | else if (strcmp (reg->type, "int") == 0) | |
1333 | { | |
1334 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1335 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1336 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1337 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1338 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1339 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1340 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1341 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1342 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1343 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1344 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1345 | /* A bit desperate by this point... */ |
ad068eab UW |
1346 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1347 | else | |
1348 | { | |
1349 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1350 | reg->name, reg->bitsize); | |
1351 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1352 | } | |
1353 | } | |
1354 | ||
1355 | if (arch_reg->type == NULL) | |
1356 | internal_error (__FILE__, __LINE__, | |
1357 | "Register \"%s\" has an unknown type \"%s\"", | |
1358 | reg->name, reg->type); | |
123dc839 | 1359 | } |
123dc839 | 1360 | |
ad068eab | 1361 | return arch_reg->type; |
123dc839 DJ |
1362 | } |
1363 | ||
1364 | static int | |
1365 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1366 | { | |
1367 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1368 | ||
1369 | if (reg != NULL) | |
1370 | return reg->target_regnum; | |
1371 | else | |
1372 | return -1; | |
1373 | } | |
1374 | ||
1375 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
1376 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
1377 | Unlike a gdbarch register_reggroup_p method, this function will |
1378 | return -1 if it does not know; the caller should handle registers | |
1379 | with no specified group. | |
123dc839 DJ |
1380 | |
1381 | Arbitrary strings (other than "general", "float", and "vector") | |
1382 | from the description are not used; they cause the register to be | |
1383 | displayed in "info all-registers" but excluded from "info | |
1384 | registers" et al. The names of containing features are also not | |
1385 | used. This might be extended to display registers in some more | |
1386 | useful groupings. | |
1387 | ||
1388 | The save-restore flag is also implemented here. */ | |
1389 | ||
f8b73d13 DJ |
1390 | int |
1391 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1392 | struct reggroup *reggroup) | |
123dc839 | 1393 | { |
123dc839 DJ |
1394 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1395 | ||
123dc839 DJ |
1396 | if (reg != NULL && reg->group != NULL) |
1397 | { | |
1398 | int general_p = 0, float_p = 0, vector_p = 0; | |
1399 | ||
1400 | if (strcmp (reg->group, "general") == 0) | |
1401 | general_p = 1; | |
1402 | else if (strcmp (reg->group, "float") == 0) | |
1403 | float_p = 1; | |
1404 | else if (strcmp (reg->group, "vector") == 0) | |
1405 | vector_p = 1; | |
1406 | ||
1407 | if (reggroup == float_reggroup) | |
1408 | return float_p; | |
1409 | ||
1410 | if (reggroup == vector_reggroup) | |
1411 | return vector_p; | |
1412 | ||
1413 | if (reggroup == general_reggroup) | |
1414 | return general_p; | |
1415 | } | |
1416 | ||
1417 | if (reg != NULL | |
1418 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1419 | return reg->save_restore; | |
1420 | ||
f8b73d13 DJ |
1421 | return -1; |
1422 | } | |
1423 | ||
1424 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1425 | group specified go to the default reggroup function and are handled | |
1426 | by type. */ | |
1427 | ||
1428 | static int | |
1429 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1430 | struct reggroup *reggroup) | |
1431 | { | |
1432 | int num_regs = gdbarch_num_regs (gdbarch); | |
1433 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1434 | int ret; | |
1435 | ||
1436 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1437 | { | |
19ba03f4 SM |
1438 | struct tdesc_arch_data *data |
1439 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1440 | |
58d6951d DJ |
1441 | if (data->pseudo_register_reggroup_p != NULL) |
1442 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1443 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1444 | } |
1445 | ||
1446 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1447 | if (ret != -1) | |
1448 | return ret; | |
1449 | ||
123dc839 DJ |
1450 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1451 | } | |
1452 | ||
1453 | /* Record architecture-specific functions to call for pseudo-register | |
1454 | support. */ | |
1455 | ||
1456 | void | |
1457 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1458 | gdbarch_register_name_ftype *pseudo_name) | |
1459 | { | |
19ba03f4 SM |
1460 | struct tdesc_arch_data *data |
1461 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1462 | |
1463 | data->pseudo_register_name = pseudo_name; | |
1464 | } | |
1465 | ||
1466 | void | |
1467 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1468 | gdbarch_register_type_ftype *pseudo_type) | |
1469 | { | |
19ba03f4 SM |
1470 | struct tdesc_arch_data *data |
1471 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1472 | |
1473 | data->pseudo_register_type = pseudo_type; | |
1474 | } | |
1475 | ||
1476 | void | |
1477 | set_tdesc_pseudo_register_reggroup_p | |
1478 | (struct gdbarch *gdbarch, | |
1479 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1480 | { | |
19ba03f4 SM |
1481 | struct tdesc_arch_data *data |
1482 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1483 | |
1484 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1485 | } | |
1486 | ||
1487 | /* Update GDBARCH to use the target description for registers. */ | |
1488 | ||
1489 | void | |
1490 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1491 | const struct target_desc *target_desc, |
123dc839 DJ |
1492 | struct tdesc_arch_data *early_data) |
1493 | { | |
1494 | int num_regs = gdbarch_num_regs (gdbarch); | |
c6913b7d | 1495 | int ixf, ixr; |
123dc839 DJ |
1496 | struct tdesc_feature *feature; |
1497 | struct tdesc_reg *reg; | |
1498 | struct tdesc_arch_data *data; | |
ad068eab | 1499 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
1500 | htab_t reg_hash; |
1501 | ||
123dc839 DJ |
1502 | /* We can't use the description for registers if it doesn't describe |
1503 | any. This function should only be called after validating | |
1504 | registers, so the caller should know that registers are | |
1505 | included. */ | |
1506 | gdb_assert (tdesc_has_registers (target_desc)); | |
1507 | ||
19ba03f4 | 1508 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1509 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
1510 | xfree (early_data); |
1511 | ||
1512 | /* Build up a set of all registers, so that we can assign register | |
1513 | numbers where needed. The hash table expands as necessary, so | |
1514 | the initial size is arbitrary. */ | |
1515 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
1516 | for (ixf = 0; | |
1517 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1518 | ixf++) | |
1519 | for (ixr = 0; | |
1520 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1521 | ixr++) | |
1522 | { | |
1523 | void **slot = htab_find_slot (reg_hash, reg, INSERT); | |
1524 | ||
1525 | *slot = reg; | |
1526 | } | |
1527 | ||
1528 | /* Remove any registers which were assigned numbers by the | |
1529 | architecture. */ | |
ad068eab UW |
1530 | for (ixr = 0; |
1531 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); | |
1532 | ixr++) | |
1533 | if (arch_reg->reg) | |
1534 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
1535 | |
1536 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1537 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1538 | Iterate over the features, not the hash table, so that the order |
1539 | matches that in the target description. */ | |
1540 | ||
ad068eab UW |
1541 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1542 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1543 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1544 | for (ixf = 0; |
1545 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1546 | ixf++) | |
1547 | for (ixr = 0; | |
1548 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1549 | ixr++) | |
1550 | if (htab_find (reg_hash, reg) != NULL) | |
1551 | { | |
ad068eab UW |
1552 | new_arch_reg.reg = reg; |
1553 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1554 | num_regs++; |
1555 | } | |
1556 | ||
1557 | htab_delete (reg_hash); | |
1558 | ||
1559 | /* Update the architecture. */ | |
1560 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1561 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1562 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1563 | set_gdbarch_remote_register_number (gdbarch, | |
1564 | tdesc_remote_register_number); | |
1565 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1566 | } | |
1567 | \f | |
1568 | ||
123dc839 DJ |
1569 | void |
1570 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1571 | int regnum, int save_restore, const char *group, | |
1572 | int bitsize, const char *type) | |
1573 | { | |
72ddacb7 YQ |
1574 | tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, |
1575 | group, bitsize, type); | |
123dc839 DJ |
1576 | |
1577 | VEC_safe_push (tdesc_reg_p, feature->registers, reg); | |
1578 | } | |
1579 | ||
ad068eab UW |
1580 | struct tdesc_type * |
1581 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1582 | struct tdesc_type *field_type, int count) | |
1583 | { | |
72ddacb7 | 1584 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_VECTOR); |
ad068eab | 1585 | |
ad068eab UW |
1586 | type->u.v.type = field_type; |
1587 | type->u.v.count = count; | |
1588 | ||
1589 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1590 | return type; | |
1591 | } | |
1592 | ||
f5dff777 DJ |
1593 | struct tdesc_type * |
1594 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
1595 | { | |
72ddacb7 | 1596 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_STRUCT); |
f5dff777 DJ |
1597 | |
1598 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1599 | return type; | |
1600 | } | |
1601 | ||
1602 | /* Set the total length of TYPE. Structs which contain bitfields may | |
1603 | omit the reserved bits, so the end of the last field may not | |
1604 | suffice. */ | |
1605 | ||
1606 | void | |
54157a25 | 1607 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
f5dff777 DJ |
1608 | { |
1609 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1610 | gdb_assert (size > 0); |
f5dff777 DJ |
1611 | type->u.u.size = size; |
1612 | } | |
1613 | ||
ad068eab UW |
1614 | struct tdesc_type * |
1615 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1616 | { | |
72ddacb7 | 1617 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_UNION); |
ad068eab UW |
1618 | |
1619 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1620 | return type; | |
1621 | } | |
1622 | ||
f5dff777 DJ |
1623 | struct tdesc_type * |
1624 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
54157a25 | 1625 | int size) |
f5dff777 | 1626 | { |
72ddacb7 | 1627 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_FLAGS); |
f5dff777 | 1628 | |
54157a25 DE |
1629 | gdb_assert (size > 0); |
1630 | ||
81516450 | 1631 | type->u.u.size = size; |
f5dff777 DJ |
1632 | |
1633 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1634 | return type; | |
1635 | } | |
1636 | ||
81516450 DE |
1637 | struct tdesc_type * |
1638 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
1639 | int size) | |
1640 | { | |
72ddacb7 | 1641 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_ENUM); |
81516450 DE |
1642 | |
1643 | gdb_assert (size > 0); | |
1644 | ||
81516450 DE |
1645 | type->u.u.size = size; |
1646 | ||
1647 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1648 | return type; | |
1649 | } | |
1650 | ||
1651 | /* Add a new field to TYPE. */ | |
f5dff777 | 1652 | |
ad068eab UW |
1653 | void |
1654 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1655 | struct tdesc_type *field_type) | |
1656 | { | |
1657 | struct tdesc_type_field f = { 0 }; | |
1658 | ||
f5dff777 DJ |
1659 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1660 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab UW |
1661 | |
1662 | f.name = xstrdup (field_name); | |
1663 | f.type = field_type; | |
81516450 DE |
1664 | /* Initialize these values so we know this is not a bit-field |
1665 | when we print-c-tdesc. */ | |
1666 | f.start = -1; | |
1667 | f.end = -1; | |
ad068eab UW |
1668 | |
1669 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1670 | } | |
1671 | ||
81516450 | 1672 | /* Add a new typed bitfield to TYPE. */ |
f5dff777 DJ |
1673 | |
1674 | void | |
81516450 DE |
1675 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
1676 | int start, int end, struct tdesc_type *field_type) | |
f5dff777 DJ |
1677 | { |
1678 | struct tdesc_type_field f = { 0 }; | |
1679 | ||
81516450 DE |
1680 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1681 | || type->kind == TDESC_TYPE_FLAGS); | |
1682 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 DJ |
1683 | |
1684 | f.name = xstrdup (field_name); | |
1685 | f.start = start; | |
1686 | f.end = end; | |
81516450 | 1687 | f.type = field_type; |
f5dff777 DJ |
1688 | |
1689 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1690 | } | |
1691 | ||
81516450 DE |
1692 | /* Add a new untyped bitfield to TYPE. |
1693 | Untyped bitfields become either uint32 or uint64 depending on the size | |
1694 | of the underlying type. */ | |
1695 | ||
1696 | void | |
1697 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, | |
1698 | int start, int end) | |
1699 | { | |
1700 | struct tdesc_type *field_type; | |
1701 | ||
1702 | gdb_assert (start >= 0 && end >= start); | |
1703 | ||
1704 | if (type->u.u.size > 4) | |
1705 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
1706 | else | |
1707 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1708 | ||
1709 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1710 | } | |
1711 | ||
1712 | /* A flag is just a typed(bool) single-bit bitfield. | |
1713 | This function is kept to minimize changes in generated files. */ | |
1714 | ||
f5dff777 DJ |
1715 | void |
1716 | tdesc_add_flag (struct tdesc_type *type, int start, | |
1717 | const char *flag_name) | |
1718 | { | |
81516450 | 1719 | struct tdesc_type_field f = { 0 }; |
f5dff777 | 1720 | |
81516450 DE |
1721 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1722 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 DJ |
1723 | |
1724 | f.name = xstrdup (flag_name); | |
1725 | f.start = start; | |
81516450 DE |
1726 | f.end = start; |
1727 | f.type = tdesc_predefined_type (TDESC_TYPE_BOOL); | |
f5dff777 | 1728 | |
81516450 DE |
1729 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
1730 | } | |
1731 | ||
1732 | void | |
1733 | tdesc_add_enum_value (struct tdesc_type *type, int value, | |
1734 | const char *name) | |
1735 | { | |
1736 | struct tdesc_type_field f = { 0 }; | |
1737 | ||
1738 | gdb_assert (type->kind == TDESC_TYPE_ENUM); | |
1739 | ||
1740 | f.name = xstrdup (name); | |
1741 | f.start = value; | |
1742 | f.end = -1; | |
1743 | f.type = tdesc_predefined_type (TDESC_TYPE_INT32); | |
1744 | ||
1745 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
f5dff777 DJ |
1746 | } |
1747 | ||
123dc839 DJ |
1748 | struct tdesc_feature * |
1749 | tdesc_create_feature (struct target_desc *tdesc, const char *name) | |
1750 | { | |
72ddacb7 | 1751 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 DJ |
1752 | |
1753 | VEC_safe_push (tdesc_feature_p, tdesc->features, new_feature); | |
1754 | return new_feature; | |
1755 | } | |
1756 | ||
424163ea DJ |
1757 | struct target_desc * |
1758 | allocate_target_description (void) | |
1759 | { | |
b468ff4c | 1760 | return new target_desc (); |
424163ea | 1761 | } |
29709017 | 1762 | |
23181151 DJ |
1763 | static void |
1764 | free_target_description (void *arg) | |
1765 | { | |
19ba03f4 | 1766 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1767 | |
b468ff4c | 1768 | delete target_desc; |
23181151 DJ |
1769 | } |
1770 | ||
1771 | struct cleanup * | |
1772 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1773 | { | |
1774 | return make_cleanup (free_target_description, target_desc); | |
1775 | } | |
1776 | ||
e35359c5 UW |
1777 | void |
1778 | tdesc_add_compatible (struct target_desc *target_desc, | |
1779 | const struct bfd_arch_info *compatible) | |
1780 | { | |
1781 | const struct bfd_arch_info *compat; | |
1782 | int ix; | |
1783 | ||
1784 | /* If this instance of GDB is compiled without BFD support for the | |
1785 | compatible architecture, simply ignore it -- we would not be able | |
1786 | to handle it anyway. */ | |
1787 | if (compatible == NULL) | |
1788 | return; | |
1789 | ||
1790 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
1791 | ix++) | |
1792 | if (compat == compatible) | |
1793 | internal_error (__FILE__, __LINE__, | |
1794 | _("Attempted to add duplicate " | |
1795 | "compatible architecture \"%s\""), | |
1796 | compatible->printable_name); | |
1797 | ||
1798 | VEC_safe_push (arch_p, target_desc->compatible, compatible); | |
1799 | } | |
1800 | ||
29709017 DJ |
1801 | void |
1802 | set_tdesc_property (struct target_desc *target_desc, | |
1803 | const char *key, const char *value) | |
1804 | { | |
1805 | struct property *prop, new_prop; | |
1806 | int ix; | |
1807 | ||
1808 | gdb_assert (key != NULL && value != NULL); | |
1809 | ||
1810 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1811 | ix++) | |
1812 | if (strcmp (prop->key, key) == 0) | |
1813 | internal_error (__FILE__, __LINE__, | |
1814 | _("Attempted to add duplicate property \"%s\""), key); | |
1815 | ||
23181151 DJ |
1816 | new_prop.key = xstrdup (key); |
1817 | new_prop.value = xstrdup (value); | |
29709017 DJ |
1818 | VEC_safe_push (property_s, target_desc->properties, &new_prop); |
1819 | } | |
23181151 DJ |
1820 | |
1821 | void | |
1822 | set_tdesc_architecture (struct target_desc *target_desc, | |
1823 | const struct bfd_arch_info *arch) | |
1824 | { | |
1825 | target_desc->arch = arch; | |
1826 | } | |
08d16641 PA |
1827 | |
1828 | void | |
1829 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1830 | { | |
1831 | target_desc->osabi = osabi; | |
1832 | } | |
23181151 DJ |
1833 | \f |
1834 | ||
1835 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1836 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1837 | ||
1838 | /* Helper functions for the CLI commands. */ | |
1839 | ||
1840 | static void | |
1841 | set_tdesc_cmd (char *args, int from_tty) | |
1842 | { | |
635c7e8a | 1843 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1844 | } |
1845 | ||
1846 | static void | |
1847 | show_tdesc_cmd (char *args, int from_tty) | |
1848 | { | |
1849 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1850 | } | |
1851 | ||
1852 | static void | |
1853 | unset_tdesc_cmd (char *args, int from_tty) | |
1854 | { | |
635c7e8a | 1855 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1856 | } |
1857 | ||
1858 | static void | |
1859 | set_tdesc_filename_cmd (char *args, int from_tty, | |
1860 | struct cmd_list_element *c) | |
1861 | { | |
6ecd4729 PA |
1862 | xfree (target_description_filename); |
1863 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1864 | ||
23181151 DJ |
1865 | target_clear_description (); |
1866 | target_find_description (); | |
1867 | } | |
1868 | ||
1869 | static void | |
1870 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1871 | struct cmd_list_element *c, | |
1872 | const char *value) | |
1873 | { | |
6ecd4729 PA |
1874 | value = target_description_filename; |
1875 | ||
23181151 | 1876 | if (value != NULL && *value != '\0') |
3e43a32a | 1877 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1878 | value); |
1879 | else | |
3e43a32a MS |
1880 | printf_filtered (_("The target description will be " |
1881 | "read from the target.\n")); | |
23181151 DJ |
1882 | } |
1883 | ||
1884 | static void | |
1885 | unset_tdesc_filename_cmd (char *args, int from_tty) | |
1886 | { | |
1887 | xfree (target_description_filename); | |
1888 | target_description_filename = NULL; | |
1889 | target_clear_description (); | |
1890 | target_find_description (); | |
1891 | } | |
1892 | ||
6eb1e6a8 YQ |
1893 | /* Print target description in C. */ |
1894 | ||
1895 | class print_c_tdesc : public tdesc_element_visitor | |
1896 | { | |
1897 | public: | |
1898 | print_c_tdesc (std::string &filename_after_features) | |
1899 | : m_filename_after_features (filename_after_features) | |
1900 | { | |
1901 | const char *inp; | |
1902 | char *outp; | |
1903 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1904 | ||
1905 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1906 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1907 | if (*inp == '.') | |
1908 | break; | |
1909 | else if (*inp == '-') | |
1910 | *outp++ = '_'; | |
1911 | else | |
1912 | *outp++ = *inp; | |
1913 | *outp = '\0'; | |
1914 | ||
1915 | /* Standard boilerplate. */ | |
1916 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1917 | "-*- buffer-read-only: t -*- vi" | |
1918 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1919 | } |
1920 | ||
1921 | ~print_c_tdesc () | |
1922 | { | |
1923 | xfree (m_function); | |
1924 | } | |
1925 | ||
1926 | void visit_pre (const target_desc *e) override | |
1927 | { | |
25aa13e5 YQ |
1928 | printf_unfiltered (" Original: %s */\n\n", |
1929 | lbasename (m_filename_after_features.c_str ())); | |
1930 | ||
6eb1e6a8 YQ |
1931 | printf_unfiltered ("#include \"defs.h\"\n"); |
1932 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1933 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1934 | printf_unfiltered ("\n"); | |
1935 | ||
1936 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1937 | printf_unfiltered ("static void\n"); | |
1938 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1939 | printf_unfiltered ("{\n"); | |
1940 | printf_unfiltered | |
1941 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1942 | ||
1943 | if (tdesc_architecture (e) != NULL) | |
1944 | { | |
1945 | printf_unfiltered | |
1946 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1947 | tdesc_architecture (e)->printable_name); | |
1948 | printf_unfiltered ("\n"); | |
1949 | } | |
1950 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1951 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1952 | { | |
1953 | printf_unfiltered | |
1954 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1955 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1956 | printf_unfiltered ("\n"); | |
1957 | } | |
1958 | ||
1959 | int ix; | |
1960 | const struct bfd_arch_info *compatible; | |
1961 | struct property *prop; | |
1962 | ||
1963 | for (ix = 0; VEC_iterate (arch_p, e->compatible, ix, compatible); | |
1964 | ix++) | |
1965 | { | |
1966 | printf_unfiltered | |
1967 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1968 | compatible->printable_name); | |
1969 | } | |
1970 | ||
1971 | if (ix) | |
1972 | printf_unfiltered ("\n"); | |
1973 | ||
1974 | for (ix = 0; VEC_iterate (property_s, e->properties, ix, prop); | |
1975 | ix++) | |
1976 | { | |
1977 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1978 | prop->key, prop->value); | |
1979 | } | |
1980 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
1981 | } | |
1982 | ||
25aa13e5 | 1983 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1984 | { |
1985 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
1986 | e->name); | |
1987 | } | |
1988 | ||
25aa13e5 YQ |
1989 | void visit_post (const tdesc_feature *e) override |
1990 | {} | |
1991 | ||
6eb1e6a8 YQ |
1992 | void visit_post (const target_desc *e) override |
1993 | { | |
1994 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1995 | printf_unfiltered ("}\n"); | |
1996 | } | |
1997 | ||
1998 | void visit (const tdesc_type *type) override | |
1999 | { | |
2000 | struct tdesc_type_field *f; | |
2001 | ||
2002 | /* Now we do some "filtering" in order to know which variables to | |
2003 | declare. This is needed because otherwise we would declare unused | |
2004 | variables `field_type' and `type'. */ | |
2005 | if (!m_printed_field_type) | |
2006 | { | |
2007 | printf_unfiltered (" struct tdesc_type *field_type;\n"); | |
2008 | m_printed_field_type = true; | |
2009 | } | |
2010 | ||
2011 | if ((type->kind == TDESC_TYPE_UNION | |
2012 | || type->kind == TDESC_TYPE_STRUCT | |
2013 | || type->kind == TDESC_TYPE_FLAGS | |
2014 | || type->kind == TDESC_TYPE_ENUM) | |
2015 | && VEC_length (tdesc_type_field, type->u.u.fields) > 0 | |
2016 | && !m_printed_type) | |
2017 | { | |
2018 | printf_unfiltered (" struct tdesc_type *type;\n"); | |
2019 | m_printed_type = true; | |
2020 | } | |
2021 | ||
2022 | switch (type->kind) | |
2023 | { | |
2024 | case TDESC_TYPE_VECTOR: | |
2025 | printf_unfiltered | |
2026 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
2027 | type->u.v.type->name); | |
2028 | printf_unfiltered | |
2029 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", | |
2030 | type->name, type->u.v.count); | |
2031 | break; | |
2032 | case TDESC_TYPE_STRUCT: | |
2033 | case TDESC_TYPE_FLAGS: | |
2034 | if (type->kind == TDESC_TYPE_STRUCT) | |
2035 | { | |
2036 | printf_unfiltered | |
2037 | (" type = tdesc_create_struct (feature, \"%s\");\n", | |
2038 | type->name); | |
2039 | if (type->u.u.size != 0) | |
2040 | printf_unfiltered | |
2041 | (" tdesc_set_struct_size (type, %d);\n", | |
2042 | type->u.u.size); | |
2043 | } | |
2044 | else | |
2045 | { | |
2046 | printf_unfiltered | |
2047 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", | |
2048 | type->name, type->u.u.size); | |
2049 | } | |
2050 | for (int ix3 = 0; | |
2051 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2052 | ix3++) | |
2053 | { | |
2054 | const char *type_name; | |
2055 | ||
2056 | gdb_assert (f->type != NULL); | |
2057 | type_name = f->type->name; | |
2058 | ||
2059 | /* To minimize changes to generated files, don't emit type | |
2060 | info for fields that have defaulted types. */ | |
2061 | if (f->start != -1) | |
2062 | { | |
2063 | gdb_assert (f->end != -1); | |
2064 | if (f->type->kind == TDESC_TYPE_BOOL) | |
2065 | { | |
2066 | gdb_assert (f->start == f->end); | |
2067 | printf_unfiltered | |
2068 | (" tdesc_add_flag (type, %d, \"%s\");\n", | |
2069 | f->start, f->name); | |
2070 | } | |
2071 | else if ((type->u.u.size == 4 | |
2072 | && f->type->kind == TDESC_TYPE_UINT32) | |
2073 | || (type->u.u.size == 8 | |
2074 | && f->type->kind == TDESC_TYPE_UINT64)) | |
2075 | { | |
2076 | printf_unfiltered | |
2077 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", | |
2078 | f->name, f->start, f->end); | |
2079 | } | |
2080 | else | |
2081 | { | |
2082 | printf_unfiltered | |
2083 | (" field_type = tdesc_named_type (feature," | |
2084 | " \"%s\");\n", | |
2085 | type_name); | |
2086 | printf_unfiltered | |
2087 | (" tdesc_add_typed_bitfield (type, \"%s\"," | |
2088 | " %d, %d, field_type);\n", | |
2089 | f->name, f->start, f->end); | |
2090 | } | |
2091 | } | |
2092 | else /* Not a bitfield. */ | |
2093 | { | |
2094 | gdb_assert (f->end == -1); | |
2095 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
2096 | printf_unfiltered | |
2097 | (" field_type = tdesc_named_type (feature," | |
2098 | " \"%s\");\n", | |
2099 | type_name); | |
2100 | printf_unfiltered | |
2101 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2102 | f->name); | |
2103 | } | |
2104 | } | |
2105 | break; | |
2106 | case TDESC_TYPE_UNION: | |
2107 | printf_unfiltered | |
2108 | (" type = tdesc_create_union (feature, \"%s\");\n", | |
2109 | type->name); | |
2110 | for (int ix3 = 0; | |
2111 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2112 | ix3++) | |
2113 | { | |
2114 | printf_unfiltered | |
2115 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
2116 | f->type->name); | |
2117 | printf_unfiltered | |
2118 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2119 | f->name); | |
2120 | } | |
2121 | break; | |
2122 | case TDESC_TYPE_ENUM: | |
2123 | printf_unfiltered | |
2124 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", | |
2125 | type->name, type->u.u.size); | |
2126 | for (int ix3 = 0; | |
2127 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2128 | ix3++) | |
2129 | printf_unfiltered | |
2130 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", | |
2131 | f->start, f->name); | |
2132 | break; | |
2133 | default: | |
2134 | error (_("C output is not supported type \"%s\"."), type->name); | |
2135 | } | |
2136 | printf_unfiltered ("\n"); | |
2137 | } | |
2138 | ||
2139 | void visit (const tdesc_reg *reg) override | |
2140 | { | |
2141 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
2142 | reg->name, reg->target_regnum, reg->save_restore); | |
2143 | if (reg->group) | |
2144 | printf_unfiltered ("\"%s\", ", reg->group); | |
2145 | else | |
2146 | printf_unfiltered ("NULL, "); | |
2147 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
2148 | } | |
2149 | ||
25aa13e5 YQ |
2150 | protected: |
2151 | std::string m_filename_after_features; | |
2152 | ||
6eb1e6a8 YQ |
2153 | private: |
2154 | char *m_function; | |
6eb1e6a8 YQ |
2155 | bool m_printed_field_type = false; |
2156 | bool m_printed_type = false; | |
2157 | }; | |
2158 | ||
25aa13e5 YQ |
2159 | /* Print target description feature in C. */ |
2160 | ||
2161 | class print_c_feature : public print_c_tdesc | |
2162 | { | |
2163 | public: | |
2164 | print_c_feature (std::string &file) | |
2165 | : print_c_tdesc (file) | |
2166 | { | |
2167 | /* Trim ".tmp". */ | |
2168 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
2169 | ||
2170 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
2171 | } | |
2172 | ||
2173 | void visit_pre (const target_desc *e) override | |
2174 | { | |
2175 | printf_unfiltered (" Original: %s */\n\n", | |
2176 | lbasename (m_filename_after_features.c_str ())); | |
2177 | ||
2178 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
2179 | printf_unfiltered ("\n"); | |
2180 | } | |
2181 | ||
2182 | void visit_post (const target_desc *e) override | |
2183 | {} | |
2184 | ||
2185 | void visit_pre (const tdesc_feature *e) override | |
2186 | { | |
2187 | std::string name (m_filename_after_features); | |
2188 | ||
2189 | auto pos = name.find_first_of ('.'); | |
2190 | ||
2191 | name = name.substr (0, pos); | |
2192 | std::replace (name.begin (), name.end (), '/', '_'); | |
2193 | std::replace (name.begin (), name.end (), '-', '_'); | |
2194 | ||
2195 | printf_unfiltered ("static int\n"); | |
2196 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
2197 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
2198 | ||
2199 | printf_unfiltered ("{\n"); | |
2200 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
2201 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
2202 | e->name); | |
2203 | } | |
2204 | ||
2205 | void visit_post (const tdesc_feature *e) override | |
2206 | { | |
2207 | printf_unfiltered (" return regnum;\n"); | |
2208 | printf_unfiltered ("}\n"); | |
2209 | } | |
2210 | ||
2211 | void visit (const tdesc_reg *reg) override | |
2212 | { | |
ea03d0d3 YQ |
2213 | /* Most "reg" in XML target descriptions don't have "regnum" |
2214 | attribute, so the register number is allocated sequentially. | |
2215 | In case that reg has "regnum" attribute, register number | |
2216 | should be set by that explicitly. */ | |
2217 | ||
2218 | if (reg->target_regnum < m_next_regnum) | |
2219 | { | |
2220 | /* The integrity check, it can catch some errors on register | |
2221 | number collision, like this, | |
2222 | ||
2223 | <reg name="x0" bitsize="32"/> | |
2224 | <reg name="x1" bitsize="32"/> | |
2225 | <reg name="x2" bitsize="32"/> | |
2226 | <reg name="x3" bitsize="32"/> | |
2227 | <reg name="ps" bitsize="32" regnum="3"/> | |
2228 | ||
2229 | but it also has false negatives. The target description | |
2230 | below is correct, | |
2231 | ||
2232 | <reg name="x1" bitsize="32" regnum="1"/> | |
2233 | <reg name="x3" bitsize="32" regnum="3"/> | |
2234 | <reg name="x2" bitsize="32" regnum="2"/> | |
2235 | <reg name="x4" bitsize="32" regnum="4"/> | |
2236 | ||
2237 | but it is not a good practice, so still error on this, | |
2238 | and also print the message so that it can be saved in the | |
2239 | generated c file. */ | |
2240 | ||
2241 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
2242 | reg->target_regnum); | |
2243 | printf_unfiltered ("is not the largest number (%d).\n", | |
2244 | m_next_regnum); | |
2245 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
2246 | reg->target_regnum, m_next_regnum); | |
2247 | } | |
2248 | ||
2249 | if (reg->target_regnum > m_next_regnum) | |
2250 | { | |
2251 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
2252 | m_next_regnum = reg->target_regnum; | |
2253 | } | |
2254 | ||
25aa13e5 YQ |
2255 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
2256 | reg->name, reg->save_restore); | |
2257 | if (reg->group) | |
2258 | printf_unfiltered ("\"%s\", ", reg->group); | |
2259 | else | |
2260 | printf_unfiltered ("NULL, "); | |
2261 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
ea03d0d3 YQ |
2262 | |
2263 | m_next_regnum++; | |
25aa13e5 YQ |
2264 | } |
2265 | ||
ea03d0d3 YQ |
2266 | private: |
2267 | /* The register number to use for the next register we see. */ | |
2268 | int m_next_regnum = 0; | |
25aa13e5 YQ |
2269 | }; |
2270 | ||
81adfced DJ |
2271 | static void |
2272 | maint_print_c_tdesc_cmd (char *args, int from_tty) | |
2273 | { | |
2274 | const struct target_desc *tdesc; | |
6eb1e6a8 | 2275 | const char *filename; |
81adfced | 2276 | |
8e2141c6 YQ |
2277 | if (args == NULL) |
2278 | { | |
2279 | /* Use the global target-supplied description, not the current | |
2280 | architecture's. This lets a GDB for one architecture generate C | |
2281 | for another architecture's description, even though the gdbarch | |
2282 | initialization code will reject the new description. */ | |
2283 | tdesc = current_target_desc; | |
2284 | filename = target_description_filename; | |
2285 | } | |
2286 | else | |
2287 | { | |
2288 | /* Use the target description from the XML file. */ | |
2289 | filename = args; | |
2290 | tdesc = file_read_description_xml (filename); | |
2291 | } | |
2292 | ||
81adfced DJ |
2293 | if (tdesc == NULL) |
2294 | error (_("There is no target description to print.")); | |
2295 | ||
8e2141c6 | 2296 | if (filename == NULL) |
81adfced DJ |
2297 | error (_("The current target description did not come from an XML file.")); |
2298 | ||
6eb1e6a8 YQ |
2299 | std::string filename_after_features (filename); |
2300 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 2301 | |
6eb1e6a8 YQ |
2302 | if (loc != std::string::npos) |
2303 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 2304 | |
25aa13e5 YQ |
2305 | /* Print c files for target features instead of target descriptions, |
2306 | because c files got from target features are more flexible than the | |
2307 | counterparts. */ | |
2308 | if (startswith (filename_after_features.c_str (), "i386/32bit-")) | |
2309 | { | |
2310 | print_c_feature v (filename_after_features); | |
81adfced | 2311 | |
25aa13e5 YQ |
2312 | tdesc->accept (v); |
2313 | } | |
2314 | else | |
2315 | { | |
2316 | print_c_tdesc v (filename_after_features); | |
2317 | ||
2318 | tdesc->accept (v); | |
2319 | } | |
81adfced DJ |
2320 | } |
2321 | ||
27d41eac YQ |
2322 | namespace selftests { |
2323 | ||
2324 | static std::vector<std::pair<const char*, const target_desc *>> xml_tdesc; | |
2325 | ||
2326 | #if GDB_SELF_TEST | |
2327 | ||
2328 | /* See target-descritpions.h. */ | |
2329 | ||
2330 | void | |
2331 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
2332 | { | |
2333 | xml_tdesc.emplace_back (xml_file, tdesc); | |
2334 | } | |
2335 | #endif | |
2336 | ||
2337 | } | |
2338 | ||
2339 | /* Check that the target descriptions created dynamically by | |
2340 | architecture-specific code equal the descriptions created from XML files | |
2341 | found in the specified directory DIR. */ | |
2342 | ||
2343 | static void | |
2344 | maintenance_check_xml_descriptions (char *dir, int from_tty) | |
2345 | { | |
2346 | if (dir == NULL) | |
2347 | error (_("Missing dir name")); | |
2348 | ||
2349 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
2350 | std::string feature_dir (dir1.get ()); | |
2351 | unsigned int failed = 0; | |
2352 | ||
2353 | for (auto const &e : selftests::xml_tdesc) | |
2354 | { | |
2355 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.first); | |
2356 | const target_desc *tdesc | |
2357 | = file_read_description_xml (tdesc_xml.data ()); | |
2358 | ||
2359 | if (tdesc == NULL || *tdesc != *e.second) | |
2360 | failed++; | |
2361 | } | |
2362 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
2363 | (long) selftests::xml_tdesc.size (), failed); | |
2364 | } | |
2365 | ||
2c0b251b PA |
2366 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
2367 | extern initialize_file_ftype _initialize_target_descriptions; | |
2368 | ||
23181151 DJ |
2369 | void |
2370 | _initialize_target_descriptions (void) | |
2371 | { | |
123dc839 DJ |
2372 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
2373 | ||
23181151 DJ |
2374 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
2375 | Set target description specific variables."), | |
2376 | &tdesc_set_cmdlist, "set tdesc ", | |
2377 | 0 /* allow-unknown */, &setlist); | |
2378 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
2379 | Show target description specific variables."), | |
2380 | &tdesc_show_cmdlist, "show tdesc ", | |
2381 | 0 /* allow-unknown */, &showlist); | |
2382 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2383 | Unset target description specific variables."), | |
2384 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2385 | 0 /* allow-unknown */, &unsetlist); | |
2386 | ||
2387 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2388 | &tdesc_filename_cmd_string, |
23181151 DJ |
2389 | _("\ |
2390 | Set the file to read for an XML target description"), _("\ | |
2391 | Show the file to read for an XML target description"), _("\ | |
2392 | When set, GDB will read the target description from a local\n\ | |
2393 | file instead of querying the remote target."), | |
2394 | set_tdesc_filename_cmd, | |
2395 | show_tdesc_filename_cmd, | |
2396 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2397 | ||
2398 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2399 | Unset the file to read for an XML target description. When unset,\n\ | |
2400 | GDB will read the description from the target."), | |
2401 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2402 | |
2403 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2404 | Print the current target description as a C source file."), | |
2405 | &maintenanceprintlist); | |
27d41eac YQ |
2406 | |
2407 | cmd_list_element *cmd; | |
2408 | ||
2409 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
2410 | maintenance_check_xml_descriptions, _("\ | |
2411 | Check the target descriptions created in GDB equal the descriptions\n\ | |
2412 | created from XML files in the directory.\n\ | |
2413 | The parameter is the directory name."), | |
2414 | &maintenancechecklist); | |
2415 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 2416 | } |