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424163ea DJ |
1 | /* Target description support for GDB. |
2 | ||
61baf725 | 3 | Copyright (C) 2006-2017 Free Software Foundation, Inc. |
424163ea DJ |
4 | |
5 | Contributed by CodeSourcery. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
424163ea DJ |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
424163ea DJ |
21 | |
22 | #include "defs.h" | |
23 | #include "arch-utils.h" | |
23181151 | 24 | #include "gdbcmd.h" |
123dc839 DJ |
25 | #include "gdbtypes.h" |
26 | #include "reggroups.h" | |
424163ea DJ |
27 | #include "target.h" |
28 | #include "target-descriptions.h" | |
29709017 | 29 | #include "vec.h" |
123dc839 | 30 | #include "xml-support.h" |
23181151 | 31 | #include "xml-tdesc.h" |
c3f08eb7 | 32 | #include "osabi.h" |
424163ea | 33 | |
123dc839 DJ |
34 | #include "gdb_obstack.h" |
35 | #include "hashtab.h" | |
6ecd4729 | 36 | #include "inferior.h" |
25aa13e5 | 37 | #include <algorithm> |
27d41eac YQ |
38 | #include "completer.h" |
39 | #include "readline/tilde.h" /* tilde_expand */ | |
424163ea | 40 | |
6eb1e6a8 YQ |
41 | /* The interface to visit different elements of target description. */ |
42 | ||
43 | class tdesc_element_visitor | |
44 | { | |
45 | public: | |
46 | virtual void visit_pre (const target_desc *e) = 0; | |
47 | virtual void visit_post (const target_desc *e) = 0; | |
48 | ||
25aa13e5 YQ |
49 | virtual void visit_pre (const tdesc_feature *e) = 0; |
50 | virtual void visit_post (const tdesc_feature *e) = 0; | |
51 | ||
6eb1e6a8 YQ |
52 | virtual void visit (const tdesc_type *e) = 0; |
53 | virtual void visit (const tdesc_reg *e) = 0; | |
54 | }; | |
55 | ||
56 | class tdesc_element | |
57 | { | |
58 | public: | |
59 | virtual void accept (tdesc_element_visitor &v) const = 0; | |
60 | }; | |
61 | ||
424163ea DJ |
62 | /* Types. */ |
63 | ||
129c10bc | 64 | struct property |
29709017 | 65 | { |
129c10bc SM |
66 | property (const std::string &key_, const std::string &value_) |
67 | : key (key_), value (value_) | |
68 | {} | |
69 | ||
70 | std::string key; | |
71 | std::string value; | |
72 | }; | |
29709017 | 73 | |
123dc839 DJ |
74 | /* An individual register from a target description. */ |
75 | ||
c9c895b9 | 76 | struct tdesc_reg : tdesc_element |
123dc839 | 77 | { |
a8142ee1 | 78 | tdesc_reg (struct tdesc_feature *feature, const std::string &name_, |
72ddacb7 YQ |
79 | int regnum, int save_restore_, const char *group_, |
80 | int bitsize_, const char *type_) | |
a8142ee1 | 81 | : name (name_), target_regnum (regnum), |
72ddacb7 | 82 | save_restore (save_restore_), |
a8142ee1 | 83 | group (group_ != NULL ? group_ : ""), |
72ddacb7 | 84 | bitsize (bitsize_), |
a8142ee1 | 85 | type (type_ != NULL ? type_ : "<unknown>") |
72ddacb7 YQ |
86 | { |
87 | /* If the register's type is target-defined, look it up now. We may not | |
88 | have easy access to the containing feature when we want it later. */ | |
a8142ee1 | 89 | tdesc_type = tdesc_named_type (feature, type.c_str ()); |
72ddacb7 YQ |
90 | } |
91 | ||
a8142ee1 | 92 | virtual ~tdesc_reg () = default; |
72ddacb7 | 93 | |
d6541620 | 94 | DISABLE_COPY_AND_ASSIGN (tdesc_reg); |
72ddacb7 | 95 | |
123dc839 DJ |
96 | /* The name of this register. In standard features, it may be |
97 | recognized by the architecture support code, or it may be purely | |
98 | for the user. */ | |
a8142ee1 | 99 | std::string name; |
123dc839 DJ |
100 | |
101 | /* The register number used by this target to refer to this | |
102 | register. This is used for remote p/P packets and to determine | |
103 | the ordering of registers in the remote g/G packets. */ | |
104 | long target_regnum; | |
105 | ||
106 | /* If this flag is set, GDB should save and restore this register | |
107 | around calls to an inferior function. */ | |
108 | int save_restore; | |
109 | ||
a8142ee1 | 110 | /* The name of the register group containing this register, or empty |
123dc839 DJ |
111 | if the group should be automatically determined from the |
112 | register's type. If this is "general", "float", or "vector", the | |
113 | corresponding "info" command should display this register's | |
114 | value. It can be an arbitrary string, but should be limited to | |
115 | alphanumeric characters and internal hyphens. Currently other | |
a8142ee1 SM |
116 | strings are ignored (treated as empty). */ |
117 | std::string group; | |
123dc839 DJ |
118 | |
119 | /* The size of the register, in bits. */ | |
120 | int bitsize; | |
121 | ||
122 | /* The type of the register. This string corresponds to either | |
123 | a named type from the target description or a predefined | |
124 | type from GDB. */ | |
a8142ee1 | 125 | std::string type; |
123dc839 DJ |
126 | |
127 | /* The target-described type corresponding to TYPE, if found. */ | |
ad068eab | 128 | struct tdesc_type *tdesc_type; |
6eb1e6a8 YQ |
129 | |
130 | void accept (tdesc_element_visitor &v) const override | |
131 | { | |
132 | v.visit (this); | |
133 | } | |
134 | ||
27d41eac YQ |
135 | bool operator== (const tdesc_reg &other) const |
136 | { | |
a8142ee1 | 137 | return (name == other.name |
27d41eac YQ |
138 | && target_regnum == other.target_regnum |
139 | && save_restore == other.save_restore | |
140 | && bitsize == other.bitsize | |
a8142ee1 SM |
141 | && group == other.group |
142 | && type == other.type); | |
27d41eac YQ |
143 | } |
144 | ||
145 | bool operator!= (const tdesc_reg &other) const | |
146 | { | |
147 | return !(*this == other); | |
148 | } | |
c9c895b9 SM |
149 | }; |
150 | ||
151 | typedef std::unique_ptr<tdesc_reg> tdesc_reg_up; | |
123dc839 DJ |
152 | |
153 | /* A named type from a target description. */ | |
ad068eab UW |
154 | |
155 | typedef struct tdesc_type_field | |
156 | { | |
157 | char *name; | |
158 | struct tdesc_type *type; | |
81516450 DE |
159 | /* For non-enum-values, either both are -1 (non-bitfield), or both are |
160 | not -1 (bitfield). For enum values, start is the value (which could be | |
161 | -1), end is -1. */ | |
f5dff777 | 162 | int start, end; |
ad068eab UW |
163 | } tdesc_type_field; |
164 | DEF_VEC_O(tdesc_type_field); | |
165 | ||
52059ffd TT |
166 | enum tdesc_type_kind |
167 | { | |
168 | /* Predefined types. */ | |
81516450 | 169 | TDESC_TYPE_BOOL, |
52059ffd TT |
170 | TDESC_TYPE_INT8, |
171 | TDESC_TYPE_INT16, | |
172 | TDESC_TYPE_INT32, | |
173 | TDESC_TYPE_INT64, | |
174 | TDESC_TYPE_INT128, | |
175 | TDESC_TYPE_UINT8, | |
176 | TDESC_TYPE_UINT16, | |
177 | TDESC_TYPE_UINT32, | |
178 | TDESC_TYPE_UINT64, | |
179 | TDESC_TYPE_UINT128, | |
180 | TDESC_TYPE_CODE_PTR, | |
181 | TDESC_TYPE_DATA_PTR, | |
182 | TDESC_TYPE_IEEE_SINGLE, | |
183 | TDESC_TYPE_IEEE_DOUBLE, | |
184 | TDESC_TYPE_ARM_FPA_EXT, | |
185 | TDESC_TYPE_I387_EXT, | |
186 | ||
187 | /* Types defined by a target feature. */ | |
188 | TDESC_TYPE_VECTOR, | |
189 | TDESC_TYPE_STRUCT, | |
190 | TDESC_TYPE_UNION, | |
81516450 DE |
191 | TDESC_TYPE_FLAGS, |
192 | TDESC_TYPE_ENUM | |
52059ffd TT |
193 | }; |
194 | ||
53c934e9 | 195 | struct tdesc_type : tdesc_element |
ad068eab | 196 | { |
082b9140 SM |
197 | tdesc_type (const std::string &name_, enum tdesc_type_kind kind_) |
198 | : name (name_), kind (kind_) | |
72ddacb7 YQ |
199 | { |
200 | memset (&u, 0, sizeof (u)); | |
201 | } | |
202 | ||
6eb1e6a8 | 203 | virtual ~tdesc_type () |
72ddacb7 YQ |
204 | { |
205 | switch (kind) | |
206 | { | |
207 | case TDESC_TYPE_STRUCT: | |
208 | case TDESC_TYPE_UNION: | |
209 | case TDESC_TYPE_FLAGS: | |
210 | case TDESC_TYPE_ENUM: | |
211 | { | |
212 | struct tdesc_type_field *f; | |
213 | int ix; | |
214 | ||
215 | for (ix = 0; | |
216 | VEC_iterate (tdesc_type_field, u.u.fields, ix, f); | |
217 | ix++) | |
218 | xfree (f->name); | |
219 | ||
220 | VEC_free (tdesc_type_field, u.u.fields); | |
221 | } | |
222 | break; | |
223 | ||
224 | default: | |
225 | break; | |
226 | } | |
72ddacb7 | 227 | } |
d6541620 YQ |
228 | |
229 | DISABLE_COPY_AND_ASSIGN (tdesc_type); | |
72ddacb7 | 230 | |
082b9140 SM |
231 | /* The name of this type. */ |
232 | std::string name; | |
ad068eab UW |
233 | |
234 | /* Identify the kind of this type. */ | |
52059ffd | 235 | enum tdesc_type_kind kind; |
ad068eab UW |
236 | |
237 | /* Kind-specific data. */ | |
238 | union | |
239 | { | |
240 | /* Vector type. */ | |
241 | struct | |
242 | { | |
243 | struct tdesc_type *type; | |
244 | int count; | |
245 | } v; | |
246 | ||
81516450 | 247 | /* Struct, union, flags, or enum type. */ |
ad068eab UW |
248 | struct |
249 | { | |
250 | VEC(tdesc_type_field) *fields; | |
54157a25 | 251 | int size; |
ad068eab UW |
252 | } u; |
253 | } u; | |
6eb1e6a8 YQ |
254 | |
255 | void accept (tdesc_element_visitor &v) const override | |
256 | { | |
257 | v.visit (this); | |
258 | } | |
259 | ||
27d41eac YQ |
260 | bool operator== (const tdesc_type &other) const |
261 | { | |
082b9140 | 262 | return name == other.name && kind == other.kind; |
27d41eac YQ |
263 | } |
264 | ||
265 | bool operator!= (const tdesc_type &other) const | |
266 | { | |
267 | return !(*this == other); | |
268 | } | |
53c934e9 SM |
269 | }; |
270 | ||
271 | typedef std::unique_ptr<tdesc_type> tdesc_type_up; | |
123dc839 DJ |
272 | |
273 | /* A feature from a target description. Each feature is a collection | |
274 | of other elements, e.g. registers and types. */ | |
275 | ||
3eea796c | 276 | struct tdesc_feature : tdesc_element |
123dc839 | 277 | { |
f65ff9f9 SM |
278 | tdesc_feature (const std::string &name_) |
279 | : name (name_) | |
72ddacb7 YQ |
280 | {} |
281 | ||
53c934e9 | 282 | virtual ~tdesc_feature () = default; |
72ddacb7 | 283 | |
d6541620 | 284 | DISABLE_COPY_AND_ASSIGN (tdesc_feature); |
72ddacb7 | 285 | |
123dc839 DJ |
286 | /* The name of this feature. It may be recognized by the architecture |
287 | support code. */ | |
f65ff9f9 | 288 | std::string name; |
123dc839 DJ |
289 | |
290 | /* The registers associated with this feature. */ | |
c9c895b9 | 291 | std::vector<std::unique_ptr<tdesc_reg>> registers; |
123dc839 DJ |
292 | |
293 | /* The types associated with this feature. */ | |
53c934e9 | 294 | std::vector<tdesc_type_up> types; |
6eb1e6a8 YQ |
295 | |
296 | void accept (tdesc_element_visitor &v) const override | |
297 | { | |
25aa13e5 | 298 | v.visit_pre (this); |
6eb1e6a8 | 299 | |
53c934e9 | 300 | for (const tdesc_type_up &type : types) |
6eb1e6a8 YQ |
301 | type->accept (v); |
302 | ||
c9c895b9 | 303 | for (const tdesc_reg_up ® : registers) |
6eb1e6a8 YQ |
304 | reg->accept (v); |
305 | ||
25aa13e5 YQ |
306 | v.visit_post (this); |
307 | } | |
27d41eac YQ |
308 | |
309 | bool operator== (const tdesc_feature &other) const | |
310 | { | |
f65ff9f9 | 311 | if (name != other.name) |
27d41eac YQ |
312 | return false; |
313 | ||
c9c895b9 | 314 | if (registers.size () != other.registers.size ()) |
27d41eac YQ |
315 | return false; |
316 | ||
c9c895b9 | 317 | for (int ix = 0; ix < registers.size (); ix++) |
27d41eac | 318 | { |
c9c895b9 SM |
319 | const tdesc_reg_up ®1 = registers[ix]; |
320 | const tdesc_reg_up ®2 = other.registers[ix]; | |
27d41eac | 321 | |
c9c895b9 | 322 | if (reg1 != reg2 && *reg1 != *reg2) |
27d41eac YQ |
323 | return false; |
324 | } | |
325 | ||
53c934e9 | 326 | if (types.size () != other.types.size ()) |
27d41eac YQ |
327 | return false; |
328 | ||
53c934e9 | 329 | for (int ix = 0; ix < types.size (); ix++) |
27d41eac | 330 | { |
53c934e9 SM |
331 | const tdesc_type_up &type1 = types[ix]; |
332 | const tdesc_type_up &type2 = other.types[ix]; | |
27d41eac | 333 | |
53c934e9 | 334 | if (type1 != type2 && *type1 != *type2) |
27d41eac YQ |
335 | return false; |
336 | } | |
337 | ||
338 | return true; | |
339 | } | |
340 | ||
341 | bool operator!= (const tdesc_feature &other) const | |
342 | { | |
343 | return !(*this == other); | |
344 | } | |
3eea796c SM |
345 | }; |
346 | ||
347 | typedef std::unique_ptr<tdesc_feature> tdesc_feature_up; | |
123dc839 DJ |
348 | |
349 | /* A target description. */ | |
350 | ||
6eb1e6a8 | 351 | struct target_desc : tdesc_element |
424163ea | 352 | { |
b468ff4c YQ |
353 | target_desc () |
354 | {} | |
355 | ||
3eea796c | 356 | virtual ~target_desc () = default; |
b468ff4c YQ |
357 | |
358 | target_desc (const target_desc &) = delete; | |
359 | void operator= (const target_desc &) = delete; | |
360 | ||
23181151 | 361 | /* The architecture reported by the target, if any. */ |
b468ff4c | 362 | const struct bfd_arch_info *arch = NULL; |
23181151 | 363 | |
08d16641 PA |
364 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
365 | otherwise. */ | |
b468ff4c | 366 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 367 | |
e35359c5 | 368 | /* The list of compatible architectures reported by the target. */ |
40e2a983 | 369 | std::vector<const bfd_arch_info *> compatible; |
e35359c5 | 370 | |
29709017 | 371 | /* Any architecture-specific properties specified by the target. */ |
129c10bc | 372 | std::vector<property> properties; |
123dc839 DJ |
373 | |
374 | /* The features associated with this target. */ | |
3eea796c | 375 | std::vector<std::unique_ptr<tdesc_feature>> features; |
6eb1e6a8 YQ |
376 | |
377 | void accept (tdesc_element_visitor &v) const override | |
378 | { | |
379 | v.visit_pre (this); | |
380 | ||
3eea796c | 381 | for (const tdesc_feature_up &feature : features) |
6eb1e6a8 YQ |
382 | feature->accept (v); |
383 | ||
384 | v.visit_post (this); | |
385 | } | |
27d41eac YQ |
386 | |
387 | bool operator== (const target_desc &other) const | |
388 | { | |
389 | if (arch != other.arch) | |
390 | return false; | |
391 | ||
392 | if (osabi != other.osabi) | |
393 | return false; | |
394 | ||
3eea796c | 395 | if (features.size () != other.features.size ()) |
27d41eac YQ |
396 | return false; |
397 | ||
3eea796c | 398 | for (int ix = 0; ix < features.size (); ix++) |
27d41eac | 399 | { |
3eea796c SM |
400 | const tdesc_feature_up &feature1 = features[ix]; |
401 | const tdesc_feature_up &feature2 = other.features[ix]; | |
27d41eac | 402 | |
3eea796c | 403 | if (feature1 != feature2 && *feature1 != *feature2) |
27d41eac YQ |
404 | return false; |
405 | } | |
406 | ||
407 | return true; | |
408 | } | |
409 | ||
410 | bool operator!= (const target_desc &other) const | |
411 | { | |
412 | return !(*this == other); | |
413 | } | |
123dc839 DJ |
414 | }; |
415 | ||
416 | /* Per-architecture data associated with a target description. The | |
417 | target description may be shared by multiple architectures, but | |
418 | this data is private to one gdbarch. */ | |
419 | ||
ad068eab UW |
420 | typedef struct tdesc_arch_reg |
421 | { | |
422 | struct tdesc_reg *reg; | |
423 | struct type *type; | |
424 | } tdesc_arch_reg; | |
425 | DEF_VEC_O(tdesc_arch_reg); | |
426 | ||
123dc839 DJ |
427 | struct tdesc_arch_data |
428 | { | |
ad068eab | 429 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
430 | During initialization of the gdbarch this list is used to store |
431 | registers which the architecture assigns a fixed register number. | |
432 | Registers which are NULL in this array, or off the end, are | |
433 | treated as zero-sized and nameless (i.e. placeholders in the | |
434 | numbering). */ | |
ad068eab | 435 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
436 | |
437 | /* Functions which report the register name, type, and reggroups for | |
438 | pseudo-registers. */ | |
439 | gdbarch_register_name_ftype *pseudo_register_name; | |
440 | gdbarch_register_type_ftype *pseudo_register_type; | |
441 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
442 | }; |
443 | ||
6ecd4729 PA |
444 | /* Info about an inferior's target description. There's one of these |
445 | for each inferior. */ | |
424163ea | 446 | |
6ecd4729 PA |
447 | struct target_desc_info |
448 | { | |
449 | /* A flag indicating that a description has already been fetched | |
450 | from the target, so it should not be queried again. */ | |
451 | ||
452 | int fetched; | |
424163ea | 453 | |
6ecd4729 PA |
454 | /* The description fetched from the target, or NULL if the target |
455 | did not supply any description. Only valid when | |
456 | target_desc_fetched is set. Only the description initialization | |
457 | code should access this; normally, the description should be | |
458 | accessed through the gdbarch object. */ | |
424163ea | 459 | |
6ecd4729 | 460 | const struct target_desc *tdesc; |
424163ea | 461 | |
6ecd4729 PA |
462 | /* The filename to read a target description from, as set by "set |
463 | tdesc filename ..." */ | |
424163ea | 464 | |
6ecd4729 PA |
465 | char *filename; |
466 | }; | |
23181151 | 467 | |
6ecd4729 PA |
468 | /* Get the inferior INF's target description info, allocating one on |
469 | the stop if necessary. */ | |
23181151 | 470 | |
6ecd4729 PA |
471 | static struct target_desc_info * |
472 | get_tdesc_info (struct inferior *inf) | |
473 | { | |
474 | if (inf->tdesc_info == NULL) | |
475 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
476 | return inf->tdesc_info; | |
477 | } | |
23181151 | 478 | |
123dc839 DJ |
479 | /* A handle for architecture-specific data associated with the |
480 | target description (see struct tdesc_arch_data). */ | |
481 | ||
482 | static struct gdbarch_data *tdesc_data; | |
483 | ||
6ecd4729 PA |
484 | /* See target-descriptions.h. */ |
485 | ||
486 | int | |
487 | target_desc_info_from_user_p (struct target_desc_info *info) | |
488 | { | |
489 | return info != NULL && info->filename != NULL; | |
490 | } | |
491 | ||
492 | /* See target-descriptions.h. */ | |
493 | ||
494 | void | |
495 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
496 | { | |
497 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
498 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
499 | ||
500 | dest->fetched = src->fetched; | |
501 | dest->tdesc = src->tdesc; | |
502 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
503 | } | |
504 | ||
505 | /* See target-descriptions.h. */ | |
506 | ||
507 | void | |
508 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
509 | { | |
510 | if (tdesc_info != NULL) | |
511 | { | |
512 | xfree (tdesc_info->filename); | |
513 | xfree (tdesc_info); | |
514 | } | |
515 | } | |
516 | ||
517 | /* Convenience helper macros. */ | |
518 | ||
519 | #define target_desc_fetched \ | |
520 | get_tdesc_info (current_inferior ())->fetched | |
521 | #define current_target_desc \ | |
522 | get_tdesc_info (current_inferior ())->tdesc | |
523 | #define target_description_filename \ | |
524 | get_tdesc_info (current_inferior ())->filename | |
525 | ||
526 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
527 | ||
528 | static char *tdesc_filename_cmd_string; | |
529 | ||
424163ea DJ |
530 | /* Fetch the current target's description, and switch the current |
531 | architecture to one which incorporates that description. */ | |
532 | ||
533 | void | |
534 | target_find_description (void) | |
535 | { | |
536 | /* If we've already fetched a description from the target, don't do | |
537 | it again. This allows a target to fetch the description early, | |
538 | during its to_open or to_create_inferior, if it needs extra | |
539 | information about the target to initialize. */ | |
540 | if (target_desc_fetched) | |
541 | return; | |
542 | ||
543 | /* The current architecture should not have any target description | |
544 | specified. It should have been cleared, e.g. when we | |
545 | disconnected from the previous target. */ | |
f5656ead | 546 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 547 | |
23181151 DJ |
548 | /* First try to fetch an XML description from the user-specified |
549 | file. */ | |
550 | current_target_desc = NULL; | |
551 | if (target_description_filename != NULL | |
552 | && *target_description_filename != '\0') | |
553 | current_target_desc | |
554 | = file_read_description_xml (target_description_filename); | |
555 | ||
556 | /* Next try to read the description from the current target using | |
557 | target objects. */ | |
558 | if (current_target_desc == NULL) | |
559 | current_target_desc = target_read_description_xml (¤t_target); | |
560 | ||
561 | /* If that failed try a target-specific hook. */ | |
562 | if (current_target_desc == NULL) | |
563 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
564 | |
565 | /* If a non-NULL description was returned, then update the current | |
566 | architecture. */ | |
567 | if (current_target_desc) | |
568 | { | |
569 | struct gdbarch_info info; | |
570 | ||
571 | gdbarch_info_init (&info); | |
572 | info.target_desc = current_target_desc; | |
573 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
574 | warning (_("Architecture rejected target-supplied description")); |
575 | else | |
576 | { | |
577 | struct tdesc_arch_data *data; | |
578 | ||
19ba03f4 SM |
579 | data = ((struct tdesc_arch_data *) |
580 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 581 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 582 | && data->arch_regs == NULL) |
123dc839 DJ |
583 | warning (_("Target-supplied registers are not supported " |
584 | "by the current architecture")); | |
585 | } | |
424163ea DJ |
586 | } |
587 | ||
588 | /* Now that we know this description is usable, record that we | |
589 | fetched it. */ | |
590 | target_desc_fetched = 1; | |
591 | } | |
592 | ||
593 | /* Discard any description fetched from the current target, and switch | |
594 | the current architecture to one with no target description. */ | |
595 | ||
596 | void | |
597 | target_clear_description (void) | |
598 | { | |
599 | struct gdbarch_info info; | |
600 | ||
601 | if (!target_desc_fetched) | |
602 | return; | |
603 | ||
604 | target_desc_fetched = 0; | |
605 | current_target_desc = NULL; | |
606 | ||
607 | gdbarch_info_init (&info); | |
608 | if (!gdbarch_update_p (info)) | |
609 | internal_error (__FILE__, __LINE__, | |
610 | _("Could not remove target-supplied description")); | |
611 | } | |
612 | ||
613 | /* Return the global current target description. This should only be | |
614 | used by gdbarch initialization code; most access should be through | |
615 | an existing gdbarch. */ | |
616 | ||
617 | const struct target_desc * | |
618 | target_current_description (void) | |
619 | { | |
620 | if (target_desc_fetched) | |
621 | return current_target_desc; | |
622 | ||
623 | return NULL; | |
624 | } | |
e35359c5 UW |
625 | |
626 | /* Return non-zero if this target description is compatible | |
627 | with the given BFD architecture. */ | |
628 | ||
629 | int | |
630 | tdesc_compatible_p (const struct target_desc *target_desc, | |
631 | const struct bfd_arch_info *arch) | |
632 | { | |
40e2a983 | 633 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
634 | { |
635 | if (compat == arch | |
636 | || arch->compatible (arch, compat) | |
637 | || compat->compatible (compat, arch)) | |
638 | return 1; | |
639 | } | |
640 | ||
641 | return 0; | |
642 | } | |
23181151 DJ |
643 | \f |
644 | ||
123dc839 | 645 | /* Direct accessors for target descriptions. */ |
424163ea | 646 | |
29709017 DJ |
647 | /* Return the string value of a property named KEY, or NULL if the |
648 | property was not specified. */ | |
649 | ||
650 | const char * | |
651 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
652 | { | |
129c10bc SM |
653 | for (const property &prop : target_desc->properties) |
654 | if (prop.key == key) | |
655 | return prop.value.c_str (); | |
29709017 DJ |
656 | |
657 | return NULL; | |
658 | } | |
659 | ||
23181151 DJ |
660 | /* Return the BFD architecture associated with this target |
661 | description, or NULL if no architecture was specified. */ | |
662 | ||
663 | const struct bfd_arch_info * | |
664 | tdesc_architecture (const struct target_desc *target_desc) | |
665 | { | |
666 | return target_desc->arch; | |
667 | } | |
08d16641 PA |
668 | |
669 | /* Return the OSABI associated with this target description, or | |
670 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
671 | ||
672 | enum gdb_osabi | |
673 | tdesc_osabi (const struct target_desc *target_desc) | |
674 | { | |
675 | return target_desc->osabi; | |
676 | } | |
677 | ||
23181151 DJ |
678 | \f |
679 | ||
123dc839 DJ |
680 | /* Return 1 if this target description includes any registers. */ |
681 | ||
682 | int | |
683 | tdesc_has_registers (const struct target_desc *target_desc) | |
684 | { | |
123dc839 DJ |
685 | if (target_desc == NULL) |
686 | return 0; | |
687 | ||
3eea796c | 688 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 689 | if (!feature->registers.empty ()) |
123dc839 DJ |
690 | return 1; |
691 | ||
692 | return 0; | |
693 | } | |
694 | ||
695 | /* Return the feature with the given name, if present, or NULL if | |
696 | the named feature is not found. */ | |
697 | ||
698 | const struct tdesc_feature * | |
699 | tdesc_find_feature (const struct target_desc *target_desc, | |
700 | const char *name) | |
701 | { | |
3eea796c | 702 | for (const tdesc_feature_up &feature : target_desc->features) |
f65ff9f9 | 703 | if (feature->name == name) |
3eea796c | 704 | return feature.get (); |
123dc839 DJ |
705 | |
706 | return NULL; | |
707 | } | |
708 | ||
709 | /* Return the name of FEATURE. */ | |
710 | ||
711 | const char * | |
712 | tdesc_feature_name (const struct tdesc_feature *feature) | |
713 | { | |
f65ff9f9 | 714 | return feature->name.c_str (); |
123dc839 DJ |
715 | } |
716 | ||
ad068eab UW |
717 | /* Predefined types. */ |
718 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 719 | { |
81516450 | 720 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
721 | { "int8", TDESC_TYPE_INT8 }, |
722 | { "int16", TDESC_TYPE_INT16 }, | |
723 | { "int32", TDESC_TYPE_INT32 }, | |
724 | { "int64", TDESC_TYPE_INT64 }, | |
725 | { "int128", TDESC_TYPE_INT128 }, | |
726 | { "uint8", TDESC_TYPE_UINT8 }, | |
727 | { "uint16", TDESC_TYPE_UINT16 }, | |
728 | { "uint32", TDESC_TYPE_UINT32 }, | |
729 | { "uint64", TDESC_TYPE_UINT64 }, | |
730 | { "uint128", TDESC_TYPE_UINT128 }, | |
731 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
732 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
733 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
734 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 735 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 736 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 737 | }; |
81adfced | 738 | |
81516450 DE |
739 | /* Lookup a predefined type. */ |
740 | ||
741 | static struct tdesc_type * | |
742 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
743 | { | |
798a7429 | 744 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
81516450 DE |
745 | if (tdesc_predefined_types[ix].kind == kind) |
746 | return &tdesc_predefined_types[ix]; | |
747 | ||
748 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
749 | } | |
750 | ||
f49ff000 | 751 | /* See arch/tdesc.h. */ |
123dc839 | 752 | |
ad068eab | 753 | struct tdesc_type * |
123dc839 DJ |
754 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
755 | { | |
123dc839 | 756 | /* First try target-defined types. */ |
53c934e9 | 757 | for (const tdesc_type_up &type : feature->types) |
082b9140 | 758 | if (type->name == id) |
53c934e9 | 759 | return type.get (); |
123dc839 | 760 | |
81adfced | 761 | /* Next try the predefined types. */ |
53c934e9 | 762 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
082b9140 | 763 | if (tdesc_predefined_types[ix].name == id) |
ad068eab | 764 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
765 | |
766 | return NULL; | |
767 | } | |
ad068eab | 768 | |
9fd3625f L |
769 | /* Lookup type associated with ID. */ |
770 | ||
771 | struct type * | |
772 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
773 | { | |
774 | struct tdesc_arch_reg *reg; | |
775 | struct tdesc_arch_data *data; | |
776 | int i, num_regs; | |
777 | ||
19ba03f4 | 778 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
9fd3625f L |
779 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); |
780 | for (i = 0; i < num_regs; i++) | |
781 | { | |
782 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); | |
783 | if (reg->reg | |
784 | && reg->reg->tdesc_type | |
785 | && reg->type | |
082b9140 | 786 | && reg->reg->tdesc_type->name == id) |
9fd3625f L |
787 | return reg->type; |
788 | } | |
789 | ||
790 | return NULL; | |
791 | } | |
792 | ||
ad068eab UW |
793 | /* Construct, if necessary, and return the GDB type implementing target |
794 | type TDESC_TYPE for architecture GDBARCH. */ | |
795 | ||
796 | static struct type * | |
797 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
798 | { | |
9fd3625f L |
799 | struct type *type; |
800 | ||
ad068eab UW |
801 | switch (tdesc_type->kind) |
802 | { | |
803 | /* Predefined types. */ | |
81516450 DE |
804 | case TDESC_TYPE_BOOL: |
805 | return builtin_type (gdbarch)->builtin_bool; | |
806 | ||
ad068eab | 807 | case TDESC_TYPE_INT8: |
df4df182 | 808 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
809 | |
810 | case TDESC_TYPE_INT16: | |
df4df182 | 811 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
812 | |
813 | case TDESC_TYPE_INT32: | |
df4df182 | 814 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
815 | |
816 | case TDESC_TYPE_INT64: | |
df4df182 | 817 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
818 | |
819 | case TDESC_TYPE_INT128: | |
df4df182 | 820 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
821 | |
822 | case TDESC_TYPE_UINT8: | |
df4df182 | 823 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
824 | |
825 | case TDESC_TYPE_UINT16: | |
df4df182 | 826 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
827 | |
828 | case TDESC_TYPE_UINT32: | |
df4df182 | 829 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
830 | |
831 | case TDESC_TYPE_UINT64: | |
df4df182 | 832 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
833 | |
834 | case TDESC_TYPE_UINT128: | |
df4df182 | 835 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
836 | |
837 | case TDESC_TYPE_CODE_PTR: | |
838 | return builtin_type (gdbarch)->builtin_func_ptr; | |
839 | ||
840 | case TDESC_TYPE_DATA_PTR: | |
841 | return builtin_type (gdbarch)->builtin_data_ptr; | |
842 | ||
9fd3625f L |
843 | default: |
844 | break; | |
845 | } | |
846 | ||
082b9140 | 847 | type = tdesc_find_type (gdbarch, tdesc_type->name.c_str ()); |
9fd3625f L |
848 | if (type) |
849 | return type; | |
850 | ||
851 | switch (tdesc_type->kind) | |
852 | { | |
ad068eab | 853 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 854 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 855 | floatformats_ieee_single); |
ad068eab UW |
856 | |
857 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 858 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 859 | floatformats_ieee_double); |
ad068eab UW |
860 | |
861 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 862 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 863 | floatformats_arm_ext); |
ad068eab | 864 | |
9fd3625f L |
865 | case TDESC_TYPE_I387_EXT: |
866 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
867 | floatformats_i387_ext); | |
868 | ||
ad068eab UW |
869 | /* Types defined by a target feature. */ |
870 | case TDESC_TYPE_VECTOR: | |
871 | { | |
872 | struct type *type, *field_type; | |
873 | ||
874 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
875 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
082b9140 | 876 | TYPE_NAME (type) = xstrdup (tdesc_type->name.c_str ()); |
ad068eab UW |
877 | |
878 | return type; | |
879 | } | |
880 | ||
f5dff777 DJ |
881 | case TDESC_TYPE_STRUCT: |
882 | { | |
883 | struct type *type, *field_type; | |
884 | struct tdesc_type_field *f; | |
885 | int ix; | |
886 | ||
887 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); | |
082b9140 | 888 | TYPE_NAME (type) = xstrdup (tdesc_type->name.c_str ()); |
f5dff777 DJ |
889 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
890 | ||
891 | for (ix = 0; | |
892 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
893 | ix++) | |
894 | { | |
81516450 | 895 | if (f->start != -1 && f->end != -1) |
f5dff777 DJ |
896 | { |
897 | /* Bitfield. */ | |
898 | struct field *fld; | |
899 | struct type *field_type; | |
900 | int bitsize, total_size; | |
901 | ||
81516450 | 902 | /* This invariant should be preserved while creating types. */ |
f5dff777 | 903 | gdb_assert (tdesc_type->u.u.size != 0); |
81516450 DE |
904 | if (f->type != NULL) |
905 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
906 | else if (tdesc_type->u.u.size > 4) | |
f5dff777 DJ |
907 | field_type = builtin_type (gdbarch)->builtin_uint64; |
908 | else | |
909 | field_type = builtin_type (gdbarch)->builtin_uint32; | |
910 | ||
911 | fld = append_composite_type_field_raw (type, xstrdup (f->name), | |
912 | field_type); | |
913 | ||
914 | /* For little-endian, BITPOS counts from the LSB of | |
915 | the structure and marks the LSB of the field. For | |
916 | big-endian, BITPOS counts from the MSB of the | |
917 | structure and marks the MSB of the field. Either | |
918 | way, it is the number of bits to the "left" of the | |
919 | field. To calculate this in big-endian, we need | |
920 | the total size of the structure. */ | |
921 | bitsize = f->end - f->start + 1; | |
922 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; | |
923 | if (gdbarch_bits_big_endian (gdbarch)) | |
f41f5e61 | 924 | SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize); |
f5dff777 | 925 | else |
f41f5e61 | 926 | SET_FIELD_BITPOS (fld[0], f->start); |
f5dff777 DJ |
927 | FIELD_BITSIZE (fld[0]) = bitsize; |
928 | } | |
929 | else | |
930 | { | |
81516450 | 931 | gdb_assert (f->start == -1 && f->end == -1); |
f5dff777 DJ |
932 | field_type = tdesc_gdb_type (gdbarch, f->type); |
933 | append_composite_type_field (type, xstrdup (f->name), | |
934 | field_type); | |
935 | } | |
936 | } | |
937 | ||
938 | if (tdesc_type->u.u.size != 0) | |
939 | TYPE_LENGTH (type) = tdesc_type->u.u.size; | |
940 | return type; | |
941 | } | |
942 | ||
ad068eab UW |
943 | case TDESC_TYPE_UNION: |
944 | { | |
945 | struct type *type, *field_type; | |
946 | struct tdesc_type_field *f; | |
947 | int ix; | |
948 | ||
e9bb382b | 949 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
082b9140 | 950 | TYPE_NAME (type) = xstrdup (tdesc_type->name.c_str ()); |
ad068eab UW |
951 | |
952 | for (ix = 0; | |
953 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
954 | ix++) | |
955 | { | |
956 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
957 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
958 | ||
f5dff777 | 959 | /* If any of the children of a union are vectors, flag the |
ad068eab UW |
960 | union as a vector also. This allows e.g. a union of two |
961 | vector types to show up automatically in "info vector". */ | |
962 | if (TYPE_VECTOR (field_type)) | |
963 | TYPE_VECTOR (type) = 1; | |
964 | } | |
f5dff777 DJ |
965 | return type; |
966 | } | |
967 | ||
968 | case TDESC_TYPE_FLAGS: | |
969 | { | |
81516450 | 970 | struct tdesc_type_field *f; |
f5dff777 DJ |
971 | int ix; |
972 | ||
082b9140 | 973 | type = arch_flags_type (gdbarch, tdesc_type->name.c_str (), |
77b7c781 | 974 | tdesc_type->u.u.size * TARGET_CHAR_BIT); |
81516450 DE |
975 | for (ix = 0; |
976 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
977 | ix++) | |
978 | { | |
979 | struct type *field_type; | |
980 | int bitsize = f->end - f->start + 1; | |
981 | ||
982 | gdb_assert (f->type != NULL); | |
983 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
984 | append_flags_type_field (type, f->start, bitsize, | |
985 | field_type, f->name); | |
986 | } | |
987 | ||
988 | return type; | |
989 | } | |
990 | ||
991 | case TDESC_TYPE_ENUM: | |
992 | { | |
993 | struct tdesc_type_field *f; | |
994 | int ix; | |
995 | ||
996 | type = arch_type (gdbarch, TYPE_CODE_ENUM, | |
77b7c781 | 997 | tdesc_type->u.u.size * TARGET_CHAR_BIT, |
082b9140 | 998 | tdesc_type->name.c_str ()); |
81516450 | 999 | TYPE_UNSIGNED (type) = 1; |
f5dff777 | 1000 | for (ix = 0; |
81516450 | 1001 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
f5dff777 | 1002 | ix++) |
81516450 DE |
1003 | { |
1004 | struct field *fld | |
1005 | = append_composite_type_field_raw (type, xstrdup (f->name), | |
1006 | NULL); | |
1007 | ||
1008 | SET_FIELD_BITPOS (fld[0], f->start); | |
1009 | } | |
ad068eab UW |
1010 | |
1011 | return type; | |
1012 | } | |
1013 | } | |
1014 | ||
1015 | internal_error (__FILE__, __LINE__, | |
1016 | "Type \"%s\" has an unknown kind %d", | |
082b9140 | 1017 | tdesc_type->name.c_str (), tdesc_type->kind); |
ad068eab | 1018 | } |
123dc839 DJ |
1019 | \f |
1020 | ||
1021 | /* Support for registers from target descriptions. */ | |
1022 | ||
1023 | /* Construct the per-gdbarch data. */ | |
1024 | ||
1025 | static void * | |
1026 | tdesc_data_init (struct obstack *obstack) | |
1027 | { | |
1028 | struct tdesc_arch_data *data; | |
1029 | ||
1030 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
1031 | return data; | |
1032 | } | |
1033 | ||
1034 | /* Similar, but for the temporary copy used during architecture | |
1035 | initialization. */ | |
1036 | ||
1037 | struct tdesc_arch_data * | |
1038 | tdesc_data_alloc (void) | |
1039 | { | |
41bf6aca | 1040 | return XCNEW (struct tdesc_arch_data); |
123dc839 DJ |
1041 | } |
1042 | ||
1043 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
1044 | to be used (for instance if it was unsuitable for the | |
1045 | architecture). */ | |
1046 | ||
1047 | void | |
1048 | tdesc_data_cleanup (void *data_untyped) | |
1049 | { | |
19ba03f4 | 1050 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 1051 | |
ad068eab | 1052 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
1053 | xfree (data); |
1054 | } | |
1055 | ||
1056 | /* Search FEATURE for a register named NAME. */ | |
1057 | ||
7cc46491 DJ |
1058 | static struct tdesc_reg * |
1059 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
1060 | const char *name) | |
123dc839 | 1061 | { |
c9c895b9 | 1062 | for (const tdesc_reg_up ® : feature->registers) |
a8142ee1 | 1063 | if (strcasecmp (reg->name.c_str (), name) == 0) |
c9c895b9 | 1064 | return reg.get (); |
123dc839 | 1065 | |
7cc46491 DJ |
1066 | return NULL; |
1067 | } | |
1068 | ||
1069 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
1070 | ||
1071 | int | |
1072 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
1073 | struct tdesc_arch_data *data, | |
1074 | int regno, const char *name) | |
1075 | { | |
ad068eab | 1076 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
1077 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
1078 | ||
1079 | if (reg == NULL) | |
1080 | return 0; | |
1081 | ||
1082 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
1083 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
1084 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
1085 | ||
1086 | arch_reg.reg = reg; | |
1087 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 1088 | return 1; |
123dc839 DJ |
1089 | } |
1090 | ||
58d6951d DJ |
1091 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
1092 | register number to it. */ | |
1093 | ||
1094 | int | |
1095 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
1096 | const char *name) | |
1097 | { | |
1098 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1099 | ||
1100 | if (reg == NULL) | |
1101 | return 0; | |
1102 | ||
1103 | return 1; | |
1104 | } | |
1105 | ||
7cc46491 DJ |
1106 | /* Search FEATURE for a register whose name is in NAMES and assign |
1107 | REGNO to it. */ | |
123dc839 DJ |
1108 | |
1109 | int | |
1110 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
1111 | struct tdesc_arch_data *data, | |
1112 | int regno, const char *const names[]) | |
1113 | { | |
1114 | int i; | |
1115 | ||
1116 | for (i = 0; names[i] != NULL; i++) | |
1117 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
1118 | return 1; | |
1119 | ||
1120 | return 0; | |
1121 | } | |
1122 | ||
7cc46491 DJ |
1123 | /* Search FEATURE for a register named NAME, and return its size in |
1124 | bits. The register must exist. */ | |
1125 | ||
1126 | int | |
1127 | tdesc_register_size (const struct tdesc_feature *feature, | |
1128 | const char *name) | |
1129 | { | |
1130 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1131 | ||
1132 | gdb_assert (reg != NULL); | |
1133 | return reg->bitsize; | |
1134 | } | |
1135 | ||
123dc839 DJ |
1136 | /* Look up a register by its GDB internal register number. */ |
1137 | ||
ad068eab UW |
1138 | static struct tdesc_arch_reg * |
1139 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 1140 | { |
123dc839 DJ |
1141 | struct tdesc_arch_data *data; |
1142 | ||
19ba03f4 | 1143 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab UW |
1144 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
1145 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
1146 | else |
1147 | return NULL; | |
1148 | } | |
1149 | ||
ad068eab UW |
1150 | static struct tdesc_reg * |
1151 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
1152 | { | |
1153 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 1154 | |
ad068eab UW |
1155 | return reg? reg->reg : NULL; |
1156 | } | |
1157 | ||
f8b73d13 DJ |
1158 | /* Return the name of register REGNO, from the target description or |
1159 | from an architecture-provided pseudo_register_name method. */ | |
1160 | ||
1161 | const char * | |
d93859e2 | 1162 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 1163 | { |
d93859e2 UW |
1164 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1165 | int num_regs = gdbarch_num_regs (gdbarch); | |
1166 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
1167 | |
1168 | if (reg != NULL) | |
a8142ee1 | 1169 | return reg->name.c_str (); |
123dc839 DJ |
1170 | |
1171 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1172 | { | |
19ba03f4 SM |
1173 | struct tdesc_arch_data *data |
1174 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1175 | |
123dc839 | 1176 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 1177 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
1178 | } |
1179 | ||
1180 | return ""; | |
1181 | } | |
1182 | ||
58d6951d | 1183 | struct type * |
123dc839 DJ |
1184 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
1185 | { | |
ad068eab UW |
1186 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
1187 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1188 | int num_regs = gdbarch_num_regs (gdbarch); |
1189 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1190 | ||
1191 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1192 | { | |
19ba03f4 SM |
1193 | struct tdesc_arch_data *data |
1194 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1195 | |
123dc839 DJ |
1196 | gdb_assert (data->pseudo_register_type != NULL); |
1197 | return data->pseudo_register_type (gdbarch, regno); | |
1198 | } | |
1199 | ||
1200 | if (reg == NULL) | |
1201 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1202 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1203 | |
ad068eab | 1204 | if (arch_reg->type == NULL) |
123dc839 | 1205 | { |
ad068eab UW |
1206 | /* First check for a predefined or target defined type. */ |
1207 | if (reg->tdesc_type) | |
1208 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
1209 | ||
1210 | /* Next try size-sensitive type shortcuts. */ | |
a8142ee1 | 1211 | else if (reg->type == "float") |
ad068eab UW |
1212 | { |
1213 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1214 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1215 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1216 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1217 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1218 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1219 | else | |
1220 | { | |
1221 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 1222 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
1223 | arch_reg->type = builtin_type (gdbarch)->builtin_double; |
1224 | } | |
1225 | } | |
a8142ee1 | 1226 | else if (reg->type == "int") |
ad068eab UW |
1227 | { |
1228 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1229 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1230 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1231 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1232 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1233 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1234 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1235 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1236 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1237 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1238 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1239 | /* A bit desperate by this point... */ |
ad068eab UW |
1240 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1241 | else | |
1242 | { | |
1243 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 1244 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
1245 | arch_reg->type = builtin_type (gdbarch)->builtin_long; |
1246 | } | |
1247 | } | |
1248 | ||
1249 | if (arch_reg->type == NULL) | |
1250 | internal_error (__FILE__, __LINE__, | |
1251 | "Register \"%s\" has an unknown type \"%s\"", | |
a8142ee1 | 1252 | reg->name.c_str (), reg->type.c_str ()); |
123dc839 | 1253 | } |
123dc839 | 1254 | |
ad068eab | 1255 | return arch_reg->type; |
123dc839 DJ |
1256 | } |
1257 | ||
1258 | static int | |
1259 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1260 | { | |
1261 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1262 | ||
1263 | if (reg != NULL) | |
1264 | return reg->target_regnum; | |
1265 | else | |
1266 | return -1; | |
1267 | } | |
1268 | ||
1269 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
1270 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
1271 | Unlike a gdbarch register_reggroup_p method, this function will |
1272 | return -1 if it does not know; the caller should handle registers | |
1273 | with no specified group. | |
123dc839 DJ |
1274 | |
1275 | Arbitrary strings (other than "general", "float", and "vector") | |
1276 | from the description are not used; they cause the register to be | |
1277 | displayed in "info all-registers" but excluded from "info | |
1278 | registers" et al. The names of containing features are also not | |
1279 | used. This might be extended to display registers in some more | |
1280 | useful groupings. | |
1281 | ||
1282 | The save-restore flag is also implemented here. */ | |
1283 | ||
f8b73d13 DJ |
1284 | int |
1285 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1286 | struct reggroup *reggroup) | |
123dc839 | 1287 | { |
123dc839 DJ |
1288 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1289 | ||
a8142ee1 | 1290 | if (reg != NULL && !reg->group.empty ()) |
123dc839 DJ |
1291 | { |
1292 | int general_p = 0, float_p = 0, vector_p = 0; | |
1293 | ||
a8142ee1 | 1294 | if (reg->group == "general") |
123dc839 | 1295 | general_p = 1; |
a8142ee1 | 1296 | else if (reg->group == "float") |
123dc839 | 1297 | float_p = 1; |
a8142ee1 | 1298 | else if (reg->group == "vector") |
123dc839 DJ |
1299 | vector_p = 1; |
1300 | ||
1301 | if (reggroup == float_reggroup) | |
1302 | return float_p; | |
1303 | ||
1304 | if (reggroup == vector_reggroup) | |
1305 | return vector_p; | |
1306 | ||
1307 | if (reggroup == general_reggroup) | |
1308 | return general_p; | |
1309 | } | |
1310 | ||
1311 | if (reg != NULL | |
1312 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1313 | return reg->save_restore; | |
1314 | ||
f8b73d13 DJ |
1315 | return -1; |
1316 | } | |
1317 | ||
1318 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1319 | group specified go to the default reggroup function and are handled | |
1320 | by type. */ | |
1321 | ||
1322 | static int | |
1323 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1324 | struct reggroup *reggroup) | |
1325 | { | |
1326 | int num_regs = gdbarch_num_regs (gdbarch); | |
1327 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1328 | int ret; | |
1329 | ||
1330 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1331 | { | |
19ba03f4 SM |
1332 | struct tdesc_arch_data *data |
1333 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1334 | |
58d6951d DJ |
1335 | if (data->pseudo_register_reggroup_p != NULL) |
1336 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1337 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1338 | } |
1339 | ||
1340 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1341 | if (ret != -1) | |
1342 | return ret; | |
1343 | ||
123dc839 DJ |
1344 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1345 | } | |
1346 | ||
1347 | /* Record architecture-specific functions to call for pseudo-register | |
1348 | support. */ | |
1349 | ||
1350 | void | |
1351 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1352 | gdbarch_register_name_ftype *pseudo_name) | |
1353 | { | |
19ba03f4 SM |
1354 | struct tdesc_arch_data *data |
1355 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1356 | |
1357 | data->pseudo_register_name = pseudo_name; | |
1358 | } | |
1359 | ||
1360 | void | |
1361 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1362 | gdbarch_register_type_ftype *pseudo_type) | |
1363 | { | |
19ba03f4 SM |
1364 | struct tdesc_arch_data *data |
1365 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1366 | |
1367 | data->pseudo_register_type = pseudo_type; | |
1368 | } | |
1369 | ||
1370 | void | |
1371 | set_tdesc_pseudo_register_reggroup_p | |
1372 | (struct gdbarch *gdbarch, | |
1373 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1374 | { | |
19ba03f4 SM |
1375 | struct tdesc_arch_data *data |
1376 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1377 | |
1378 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1379 | } | |
1380 | ||
1381 | /* Update GDBARCH to use the target description for registers. */ | |
1382 | ||
1383 | void | |
1384 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1385 | const struct target_desc *target_desc, |
123dc839 DJ |
1386 | struct tdesc_arch_data *early_data) |
1387 | { | |
1388 | int num_regs = gdbarch_num_regs (gdbarch); | |
123dc839 | 1389 | struct tdesc_arch_data *data; |
ad068eab | 1390 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
1391 | htab_t reg_hash; |
1392 | ||
123dc839 DJ |
1393 | /* We can't use the description for registers if it doesn't describe |
1394 | any. This function should only be called after validating | |
1395 | registers, so the caller should know that registers are | |
1396 | included. */ | |
1397 | gdb_assert (tdesc_has_registers (target_desc)); | |
1398 | ||
19ba03f4 | 1399 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1400 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
1401 | xfree (early_data); |
1402 | ||
1403 | /* Build up a set of all registers, so that we can assign register | |
1404 | numbers where needed. The hash table expands as necessary, so | |
1405 | the initial size is arbitrary. */ | |
1406 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
3eea796c | 1407 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 1408 | for (const tdesc_reg_up ® : feature->registers) |
123dc839 | 1409 | { |
c9c895b9 | 1410 | void **slot = htab_find_slot (reg_hash, reg.get (), INSERT); |
123dc839 | 1411 | |
c9c895b9 | 1412 | *slot = reg.get (); |
123dc839 DJ |
1413 | } |
1414 | ||
1415 | /* Remove any registers which were assigned numbers by the | |
1416 | architecture. */ | |
c9c895b9 | 1417 | for (int ixr = 0; |
ad068eab UW |
1418 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); |
1419 | ixr++) | |
1420 | if (arch_reg->reg) | |
1421 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
1422 | |
1423 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1424 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1425 | Iterate over the features, not the hash table, so that the order |
1426 | matches that in the target description. */ | |
1427 | ||
ad068eab UW |
1428 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1429 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1430 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
3eea796c | 1431 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 SM |
1432 | for (const tdesc_reg_up ® : feature->registers) |
1433 | if (htab_find (reg_hash, reg.get ()) != NULL) | |
123dc839 | 1434 | { |
c9c895b9 | 1435 | new_arch_reg.reg = reg.get (); |
ad068eab | 1436 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); |
123dc839 DJ |
1437 | num_regs++; |
1438 | } | |
1439 | ||
1440 | htab_delete (reg_hash); | |
1441 | ||
1442 | /* Update the architecture. */ | |
1443 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1444 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1445 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1446 | set_gdbarch_remote_register_number (gdbarch, | |
1447 | tdesc_remote_register_number); | |
1448 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1449 | } | |
1450 | \f | |
1451 | ||
f49ff000 YQ |
1452 | /* See arch/tdesc.h. */ |
1453 | ||
123dc839 DJ |
1454 | void |
1455 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1456 | int regnum, int save_restore, const char *group, | |
1457 | int bitsize, const char *type) | |
1458 | { | |
72ddacb7 YQ |
1459 | tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, |
1460 | group, bitsize, type); | |
123dc839 | 1461 | |
c9c895b9 | 1462 | feature->registers.emplace_back (reg); |
123dc839 DJ |
1463 | } |
1464 | ||
f49ff000 YQ |
1465 | /* See arch/tdesc.h. */ |
1466 | ||
ad068eab UW |
1467 | struct tdesc_type * |
1468 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1469 | struct tdesc_type *field_type, int count) | |
1470 | { | |
72ddacb7 | 1471 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_VECTOR); |
ad068eab | 1472 | |
ad068eab UW |
1473 | type->u.v.type = field_type; |
1474 | type->u.v.count = count; | |
1475 | ||
53c934e9 | 1476 | feature->types.emplace_back (type); |
ad068eab UW |
1477 | return type; |
1478 | } | |
1479 | ||
f49ff000 YQ |
1480 | /* See arch/tdesc.h. */ |
1481 | ||
f5dff777 DJ |
1482 | struct tdesc_type * |
1483 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
1484 | { | |
72ddacb7 | 1485 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_STRUCT); |
f5dff777 | 1486 | |
53c934e9 | 1487 | feature->types.emplace_back (type); |
f5dff777 DJ |
1488 | return type; |
1489 | } | |
1490 | ||
f49ff000 | 1491 | /* See arch/tdesc.h. */ |
f5dff777 DJ |
1492 | |
1493 | void | |
54157a25 | 1494 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
f5dff777 DJ |
1495 | { |
1496 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1497 | gdb_assert (size > 0); |
f5dff777 DJ |
1498 | type->u.u.size = size; |
1499 | } | |
1500 | ||
f49ff000 YQ |
1501 | /* See arch/tdesc.h. */ |
1502 | ||
ad068eab UW |
1503 | struct tdesc_type * |
1504 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1505 | { | |
72ddacb7 | 1506 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_UNION); |
ad068eab | 1507 | |
53c934e9 | 1508 | feature->types.emplace_back (type); |
ad068eab UW |
1509 | return type; |
1510 | } | |
1511 | ||
f49ff000 YQ |
1512 | /* See arch/tdesc.h. */ |
1513 | ||
f5dff777 DJ |
1514 | struct tdesc_type * |
1515 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
54157a25 | 1516 | int size) |
f5dff777 | 1517 | { |
72ddacb7 | 1518 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_FLAGS); |
f5dff777 | 1519 | |
54157a25 DE |
1520 | gdb_assert (size > 0); |
1521 | ||
81516450 | 1522 | type->u.u.size = size; |
f5dff777 | 1523 | |
53c934e9 | 1524 | feature->types.emplace_back (type); |
f5dff777 DJ |
1525 | return type; |
1526 | } | |
1527 | ||
81516450 DE |
1528 | struct tdesc_type * |
1529 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
1530 | int size) | |
1531 | { | |
72ddacb7 | 1532 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_ENUM); |
81516450 DE |
1533 | |
1534 | gdb_assert (size > 0); | |
1535 | ||
81516450 DE |
1536 | type->u.u.size = size; |
1537 | ||
53c934e9 | 1538 | feature->types.emplace_back (type); |
81516450 DE |
1539 | return type; |
1540 | } | |
1541 | ||
f49ff000 | 1542 | /* See arch/tdesc.h. */ |
f5dff777 | 1543 | |
ad068eab UW |
1544 | void |
1545 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1546 | struct tdesc_type *field_type) | |
1547 | { | |
1548 | struct tdesc_type_field f = { 0 }; | |
1549 | ||
f5dff777 DJ |
1550 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1551 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab UW |
1552 | |
1553 | f.name = xstrdup (field_name); | |
1554 | f.type = field_type; | |
81516450 DE |
1555 | /* Initialize these values so we know this is not a bit-field |
1556 | when we print-c-tdesc. */ | |
1557 | f.start = -1; | |
1558 | f.end = -1; | |
ad068eab UW |
1559 | |
1560 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1561 | } | |
1562 | ||
f5dff777 | 1563 | void |
81516450 DE |
1564 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
1565 | int start, int end, struct tdesc_type *field_type) | |
f5dff777 DJ |
1566 | { |
1567 | struct tdesc_type_field f = { 0 }; | |
1568 | ||
81516450 DE |
1569 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1570 | || type->kind == TDESC_TYPE_FLAGS); | |
1571 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 DJ |
1572 | |
1573 | f.name = xstrdup (field_name); | |
1574 | f.start = start; | |
1575 | f.end = end; | |
81516450 | 1576 | f.type = field_type; |
f5dff777 DJ |
1577 | |
1578 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1579 | } | |
1580 | ||
f49ff000 | 1581 | /* See arch/tdesc.h. */ |
81516450 DE |
1582 | |
1583 | void | |
1584 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, | |
1585 | int start, int end) | |
1586 | { | |
1587 | struct tdesc_type *field_type; | |
1588 | ||
1589 | gdb_assert (start >= 0 && end >= start); | |
1590 | ||
1591 | if (type->u.u.size > 4) | |
1592 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
1593 | else | |
1594 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1595 | ||
1596 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1597 | } | |
1598 | ||
f49ff000 | 1599 | /* See arch/tdesc.h. */ |
81516450 | 1600 | |
f5dff777 DJ |
1601 | void |
1602 | tdesc_add_flag (struct tdesc_type *type, int start, | |
1603 | const char *flag_name) | |
1604 | { | |
81516450 | 1605 | struct tdesc_type_field f = { 0 }; |
f5dff777 | 1606 | |
81516450 DE |
1607 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1608 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 DJ |
1609 | |
1610 | f.name = xstrdup (flag_name); | |
1611 | f.start = start; | |
81516450 DE |
1612 | f.end = start; |
1613 | f.type = tdesc_predefined_type (TDESC_TYPE_BOOL); | |
f5dff777 | 1614 | |
81516450 DE |
1615 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
1616 | } | |
1617 | ||
1618 | void | |
1619 | tdesc_add_enum_value (struct tdesc_type *type, int value, | |
1620 | const char *name) | |
1621 | { | |
1622 | struct tdesc_type_field f = { 0 }; | |
1623 | ||
1624 | gdb_assert (type->kind == TDESC_TYPE_ENUM); | |
1625 | ||
1626 | f.name = xstrdup (name); | |
1627 | f.start = value; | |
1628 | f.end = -1; | |
1629 | f.type = tdesc_predefined_type (TDESC_TYPE_INT32); | |
1630 | ||
1631 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
f5dff777 DJ |
1632 | } |
1633 | ||
f49ff000 YQ |
1634 | /* See arch/tdesc.h. */ |
1635 | ||
123dc839 | 1636 | struct tdesc_feature * |
0abe8a89 YQ |
1637 | tdesc_create_feature (struct target_desc *tdesc, const char *name, |
1638 | const char *xml) | |
123dc839 | 1639 | { |
72ddacb7 | 1640 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 | 1641 | |
3eea796c SM |
1642 | tdesc->features.emplace_back (new_feature); |
1643 | ||
123dc839 DJ |
1644 | return new_feature; |
1645 | } | |
1646 | ||
424163ea DJ |
1647 | struct target_desc * |
1648 | allocate_target_description (void) | |
1649 | { | |
b468ff4c | 1650 | return new target_desc (); |
424163ea | 1651 | } |
29709017 | 1652 | |
23181151 DJ |
1653 | static void |
1654 | free_target_description (void *arg) | |
1655 | { | |
19ba03f4 | 1656 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1657 | |
b468ff4c | 1658 | delete target_desc; |
23181151 DJ |
1659 | } |
1660 | ||
1661 | struct cleanup * | |
1662 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1663 | { | |
1664 | return make_cleanup (free_target_description, target_desc); | |
1665 | } | |
1666 | ||
e35359c5 UW |
1667 | void |
1668 | tdesc_add_compatible (struct target_desc *target_desc, | |
1669 | const struct bfd_arch_info *compatible) | |
1670 | { | |
e35359c5 UW |
1671 | /* If this instance of GDB is compiled without BFD support for the |
1672 | compatible architecture, simply ignore it -- we would not be able | |
1673 | to handle it anyway. */ | |
1674 | if (compatible == NULL) | |
1675 | return; | |
1676 | ||
40e2a983 | 1677 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
1678 | if (compat == compatible) |
1679 | internal_error (__FILE__, __LINE__, | |
1680 | _("Attempted to add duplicate " | |
1681 | "compatible architecture \"%s\""), | |
1682 | compatible->printable_name); | |
1683 | ||
40e2a983 | 1684 | target_desc->compatible.push_back (compatible); |
e35359c5 UW |
1685 | } |
1686 | ||
29709017 DJ |
1687 | void |
1688 | set_tdesc_property (struct target_desc *target_desc, | |
1689 | const char *key, const char *value) | |
1690 | { | |
29709017 DJ |
1691 | gdb_assert (key != NULL && value != NULL); |
1692 | ||
129c10bc SM |
1693 | if (tdesc_property (target_desc, key) != NULL) |
1694 | internal_error (__FILE__, __LINE__, | |
1695 | _("Attempted to add duplicate property \"%s\""), key); | |
29709017 | 1696 | |
129c10bc | 1697 | target_desc->properties.emplace_back (key, value); |
29709017 | 1698 | } |
23181151 | 1699 | |
5f035c07 YQ |
1700 | /* See arch/tdesc.h. */ |
1701 | ||
1702 | void | |
1703 | set_tdesc_architecture (struct target_desc *target_desc, | |
1704 | const char *name) | |
1705 | { | |
1706 | set_tdesc_architecture (target_desc, bfd_scan_arch (name)); | |
1707 | } | |
1708 | ||
23181151 DJ |
1709 | void |
1710 | set_tdesc_architecture (struct target_desc *target_desc, | |
1711 | const struct bfd_arch_info *arch) | |
1712 | { | |
1713 | target_desc->arch = arch; | |
1714 | } | |
08d16641 | 1715 | |
5f035c07 YQ |
1716 | /* See arch/tdesc.h. */ |
1717 | ||
1718 | void | |
1719 | set_tdesc_osabi (struct target_desc *target_desc, const char *name) | |
1720 | { | |
1721 | set_tdesc_osabi (target_desc, osabi_from_tdesc_string (name)); | |
1722 | } | |
1723 | ||
08d16641 PA |
1724 | void |
1725 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1726 | { | |
1727 | target_desc->osabi = osabi; | |
1728 | } | |
23181151 DJ |
1729 | \f |
1730 | ||
1731 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1732 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1733 | ||
1734 | /* Helper functions for the CLI commands. */ | |
1735 | ||
1736 | static void | |
981a3fb3 | 1737 | set_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1738 | { |
635c7e8a | 1739 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1740 | } |
1741 | ||
1742 | static void | |
981a3fb3 | 1743 | show_tdesc_cmd (const char *args, int from_tty) |
23181151 DJ |
1744 | { |
1745 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1746 | } | |
1747 | ||
1748 | static void | |
981a3fb3 | 1749 | unset_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1750 | { |
635c7e8a | 1751 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1752 | } |
1753 | ||
1754 | static void | |
eb4c3f4a | 1755 | set_tdesc_filename_cmd (const char *args, int from_tty, |
23181151 DJ |
1756 | struct cmd_list_element *c) |
1757 | { | |
6ecd4729 PA |
1758 | xfree (target_description_filename); |
1759 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1760 | ||
23181151 DJ |
1761 | target_clear_description (); |
1762 | target_find_description (); | |
1763 | } | |
1764 | ||
1765 | static void | |
1766 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1767 | struct cmd_list_element *c, | |
1768 | const char *value) | |
1769 | { | |
6ecd4729 PA |
1770 | value = target_description_filename; |
1771 | ||
23181151 | 1772 | if (value != NULL && *value != '\0') |
3e43a32a | 1773 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1774 | value); |
1775 | else | |
3e43a32a MS |
1776 | printf_filtered (_("The target description will be " |
1777 | "read from the target.\n")); | |
23181151 DJ |
1778 | } |
1779 | ||
1780 | static void | |
e100df1a | 1781 | unset_tdesc_filename_cmd (const char *args, int from_tty) |
23181151 DJ |
1782 | { |
1783 | xfree (target_description_filename); | |
1784 | target_description_filename = NULL; | |
1785 | target_clear_description (); | |
1786 | target_find_description (); | |
1787 | } | |
1788 | ||
6eb1e6a8 YQ |
1789 | /* Print target description in C. */ |
1790 | ||
1791 | class print_c_tdesc : public tdesc_element_visitor | |
1792 | { | |
1793 | public: | |
1794 | print_c_tdesc (std::string &filename_after_features) | |
1795 | : m_filename_after_features (filename_after_features) | |
1796 | { | |
1797 | const char *inp; | |
1798 | char *outp; | |
1799 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1800 | ||
1801 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1802 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1803 | if (*inp == '.') | |
1804 | break; | |
1805 | else if (*inp == '-') | |
1806 | *outp++ = '_'; | |
1807 | else | |
1808 | *outp++ = *inp; | |
1809 | *outp = '\0'; | |
1810 | ||
1811 | /* Standard boilerplate. */ | |
1812 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1813 | "-*- buffer-read-only: t -*- vi" | |
1814 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1815 | } |
1816 | ||
1817 | ~print_c_tdesc () | |
1818 | { | |
1819 | xfree (m_function); | |
1820 | } | |
1821 | ||
1822 | void visit_pre (const target_desc *e) override | |
1823 | { | |
25aa13e5 YQ |
1824 | printf_unfiltered (" Original: %s */\n\n", |
1825 | lbasename (m_filename_after_features.c_str ())); | |
1826 | ||
6eb1e6a8 YQ |
1827 | printf_unfiltered ("#include \"defs.h\"\n"); |
1828 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1829 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1830 | printf_unfiltered ("\n"); | |
1831 | ||
1832 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1833 | printf_unfiltered ("static void\n"); | |
1834 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1835 | printf_unfiltered ("{\n"); | |
1836 | printf_unfiltered | |
1837 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1838 | ||
1839 | if (tdesc_architecture (e) != NULL) | |
1840 | { | |
1841 | printf_unfiltered | |
1842 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1843 | tdesc_architecture (e)->printable_name); | |
1844 | printf_unfiltered ("\n"); | |
1845 | } | |
1846 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1847 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1848 | { | |
1849 | printf_unfiltered | |
1850 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1851 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1852 | printf_unfiltered ("\n"); | |
1853 | } | |
1854 | ||
40e2a983 SM |
1855 | for (const struct bfd_arch_info *compatible : e->compatible) |
1856 | printf_unfiltered | |
1857 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1858 | compatible->printable_name); | |
6eb1e6a8 | 1859 | |
40e2a983 | 1860 | if (!e->compatible.empty ()) |
6eb1e6a8 YQ |
1861 | printf_unfiltered ("\n"); |
1862 | ||
129c10bc SM |
1863 | for (const property &prop : e->properties) |
1864 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1865 | prop.key.c_str (), prop.value.c_str ()); | |
1866 | ||
6eb1e6a8 YQ |
1867 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
1868 | } | |
1869 | ||
25aa13e5 | 1870 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1871 | { |
1872 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
f65ff9f9 | 1873 | e->name.c_str ()); |
6eb1e6a8 YQ |
1874 | } |
1875 | ||
25aa13e5 YQ |
1876 | void visit_post (const tdesc_feature *e) override |
1877 | {} | |
1878 | ||
6eb1e6a8 YQ |
1879 | void visit_post (const target_desc *e) override |
1880 | { | |
1881 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1882 | printf_unfiltered ("}\n"); | |
1883 | } | |
1884 | ||
1885 | void visit (const tdesc_type *type) override | |
1886 | { | |
1887 | struct tdesc_type_field *f; | |
1888 | ||
1889 | /* Now we do some "filtering" in order to know which variables to | |
1890 | declare. This is needed because otherwise we would declare unused | |
1891 | variables `field_type' and `type'. */ | |
1892 | if (!m_printed_field_type) | |
1893 | { | |
1894 | printf_unfiltered (" struct tdesc_type *field_type;\n"); | |
1895 | m_printed_field_type = true; | |
1896 | } | |
1897 | ||
1898 | if ((type->kind == TDESC_TYPE_UNION | |
1899 | || type->kind == TDESC_TYPE_STRUCT | |
1900 | || type->kind == TDESC_TYPE_FLAGS | |
1901 | || type->kind == TDESC_TYPE_ENUM) | |
1902 | && VEC_length (tdesc_type_field, type->u.u.fields) > 0 | |
1903 | && !m_printed_type) | |
1904 | { | |
1905 | printf_unfiltered (" struct tdesc_type *type;\n"); | |
1906 | m_printed_type = true; | |
1907 | } | |
1908 | ||
1909 | switch (type->kind) | |
1910 | { | |
1911 | case TDESC_TYPE_VECTOR: | |
1912 | printf_unfiltered | |
1913 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
082b9140 | 1914 | type->u.v.type->name.c_str ()); |
6eb1e6a8 YQ |
1915 | printf_unfiltered |
1916 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", | |
082b9140 | 1917 | type->name.c_str (), type->u.v.count); |
6eb1e6a8 YQ |
1918 | break; |
1919 | case TDESC_TYPE_STRUCT: | |
1920 | case TDESC_TYPE_FLAGS: | |
1921 | if (type->kind == TDESC_TYPE_STRUCT) | |
1922 | { | |
1923 | printf_unfiltered | |
1924 | (" type = tdesc_create_struct (feature, \"%s\");\n", | |
082b9140 | 1925 | type->name.c_str ()); |
6eb1e6a8 YQ |
1926 | if (type->u.u.size != 0) |
1927 | printf_unfiltered | |
1928 | (" tdesc_set_struct_size (type, %d);\n", | |
1929 | type->u.u.size); | |
1930 | } | |
1931 | else | |
1932 | { | |
1933 | printf_unfiltered | |
1934 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", | |
082b9140 | 1935 | type->name.c_str (), type->u.u.size); |
6eb1e6a8 YQ |
1936 | } |
1937 | for (int ix3 = 0; | |
1938 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1939 | ix3++) | |
1940 | { | |
1941 | const char *type_name; | |
1942 | ||
1943 | gdb_assert (f->type != NULL); | |
082b9140 | 1944 | type_name = f->type->name.c_str (); |
6eb1e6a8 YQ |
1945 | |
1946 | /* To minimize changes to generated files, don't emit type | |
1947 | info for fields that have defaulted types. */ | |
1948 | if (f->start != -1) | |
1949 | { | |
1950 | gdb_assert (f->end != -1); | |
1951 | if (f->type->kind == TDESC_TYPE_BOOL) | |
1952 | { | |
1953 | gdb_assert (f->start == f->end); | |
1954 | printf_unfiltered | |
1955 | (" tdesc_add_flag (type, %d, \"%s\");\n", | |
1956 | f->start, f->name); | |
1957 | } | |
1958 | else if ((type->u.u.size == 4 | |
1959 | && f->type->kind == TDESC_TYPE_UINT32) | |
1960 | || (type->u.u.size == 8 | |
1961 | && f->type->kind == TDESC_TYPE_UINT64)) | |
1962 | { | |
1963 | printf_unfiltered | |
1964 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", | |
1965 | f->name, f->start, f->end); | |
1966 | } | |
1967 | else | |
1968 | { | |
1969 | printf_unfiltered | |
1970 | (" field_type = tdesc_named_type (feature," | |
1971 | " \"%s\");\n", | |
1972 | type_name); | |
1973 | printf_unfiltered | |
1974 | (" tdesc_add_typed_bitfield (type, \"%s\"," | |
1975 | " %d, %d, field_type);\n", | |
1976 | f->name, f->start, f->end); | |
1977 | } | |
1978 | } | |
1979 | else /* Not a bitfield. */ | |
1980 | { | |
1981 | gdb_assert (f->end == -1); | |
1982 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
1983 | printf_unfiltered | |
1984 | (" field_type = tdesc_named_type (feature," | |
1985 | " \"%s\");\n", | |
1986 | type_name); | |
1987 | printf_unfiltered | |
1988 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
1989 | f->name); | |
1990 | } | |
1991 | } | |
1992 | break; | |
1993 | case TDESC_TYPE_UNION: | |
1994 | printf_unfiltered | |
1995 | (" type = tdesc_create_union (feature, \"%s\");\n", | |
082b9140 | 1996 | type->name.c_str ()); |
6eb1e6a8 YQ |
1997 | for (int ix3 = 0; |
1998 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1999 | ix3++) | |
2000 | { | |
2001 | printf_unfiltered | |
2002 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
082b9140 | 2003 | f->type->name.c_str ()); |
6eb1e6a8 YQ |
2004 | printf_unfiltered |
2005 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2006 | f->name); | |
2007 | } | |
2008 | break; | |
2009 | case TDESC_TYPE_ENUM: | |
2010 | printf_unfiltered | |
2011 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", | |
082b9140 | 2012 | type->name.c_str (), type->u.u.size); |
6eb1e6a8 YQ |
2013 | for (int ix3 = 0; |
2014 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2015 | ix3++) | |
2016 | printf_unfiltered | |
2017 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", | |
2018 | f->start, f->name); | |
2019 | break; | |
2020 | default: | |
082b9140 | 2021 | error (_("C output is not supported type \"%s\"."), type->name.c_str ()); |
6eb1e6a8 YQ |
2022 | } |
2023 | printf_unfiltered ("\n"); | |
2024 | } | |
2025 | ||
2026 | void visit (const tdesc_reg *reg) override | |
2027 | { | |
2028 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
a8142ee1 SM |
2029 | reg->name.c_str (), reg->target_regnum, |
2030 | reg->save_restore); | |
2031 | if (!reg->group.empty ()) | |
2032 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
6eb1e6a8 YQ |
2033 | else |
2034 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 2035 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
6eb1e6a8 YQ |
2036 | } |
2037 | ||
25aa13e5 YQ |
2038 | protected: |
2039 | std::string m_filename_after_features; | |
2040 | ||
6eb1e6a8 YQ |
2041 | private: |
2042 | char *m_function; | |
6eb1e6a8 YQ |
2043 | bool m_printed_field_type = false; |
2044 | bool m_printed_type = false; | |
2045 | }; | |
2046 | ||
25aa13e5 YQ |
2047 | /* Print target description feature in C. */ |
2048 | ||
2049 | class print_c_feature : public print_c_tdesc | |
2050 | { | |
2051 | public: | |
2052 | print_c_feature (std::string &file) | |
2053 | : print_c_tdesc (file) | |
2054 | { | |
2055 | /* Trim ".tmp". */ | |
2056 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
2057 | ||
2058 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
2059 | } | |
2060 | ||
2061 | void visit_pre (const target_desc *e) override | |
2062 | { | |
2063 | printf_unfiltered (" Original: %s */\n\n", | |
2064 | lbasename (m_filename_after_features.c_str ())); | |
2065 | ||
f49ff000 | 2066 | printf_unfiltered ("#include \"arch/tdesc.h\"\n"); |
25aa13e5 YQ |
2067 | printf_unfiltered ("\n"); |
2068 | } | |
2069 | ||
2070 | void visit_post (const target_desc *e) override | |
2071 | {} | |
2072 | ||
2073 | void visit_pre (const tdesc_feature *e) override | |
2074 | { | |
2075 | std::string name (m_filename_after_features); | |
2076 | ||
2077 | auto pos = name.find_first_of ('.'); | |
2078 | ||
2079 | name = name.substr (0, pos); | |
2080 | std::replace (name.begin (), name.end (), '/', '_'); | |
2081 | std::replace (name.begin (), name.end (), '-', '_'); | |
2082 | ||
2083 | printf_unfiltered ("static int\n"); | |
2084 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
2085 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
2086 | ||
2087 | printf_unfiltered ("{\n"); | |
2088 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
0abe8a89 YQ |
2089 | |
2090 | printf_unfiltered | |
2091 | ("\n feature = tdesc_create_feature (result, \"%s\", \"%s\");\n", | |
f65ff9f9 | 2092 | e->name.c_str (), lbasename (m_filename_after_features.c_str ())); |
25aa13e5 YQ |
2093 | } |
2094 | ||
2095 | void visit_post (const tdesc_feature *e) override | |
2096 | { | |
2097 | printf_unfiltered (" return regnum;\n"); | |
2098 | printf_unfiltered ("}\n"); | |
2099 | } | |
2100 | ||
2101 | void visit (const tdesc_reg *reg) override | |
2102 | { | |
ea03d0d3 YQ |
2103 | /* Most "reg" in XML target descriptions don't have "regnum" |
2104 | attribute, so the register number is allocated sequentially. | |
2105 | In case that reg has "regnum" attribute, register number | |
2106 | should be set by that explicitly. */ | |
2107 | ||
2108 | if (reg->target_regnum < m_next_regnum) | |
2109 | { | |
2110 | /* The integrity check, it can catch some errors on register | |
2111 | number collision, like this, | |
2112 | ||
2113 | <reg name="x0" bitsize="32"/> | |
2114 | <reg name="x1" bitsize="32"/> | |
2115 | <reg name="x2" bitsize="32"/> | |
2116 | <reg name="x3" bitsize="32"/> | |
2117 | <reg name="ps" bitsize="32" regnum="3"/> | |
2118 | ||
2119 | but it also has false negatives. The target description | |
2120 | below is correct, | |
2121 | ||
2122 | <reg name="x1" bitsize="32" regnum="1"/> | |
2123 | <reg name="x3" bitsize="32" regnum="3"/> | |
2124 | <reg name="x2" bitsize="32" regnum="2"/> | |
2125 | <reg name="x4" bitsize="32" regnum="4"/> | |
2126 | ||
2127 | but it is not a good practice, so still error on this, | |
2128 | and also print the message so that it can be saved in the | |
2129 | generated c file. */ | |
2130 | ||
2131 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
2132 | reg->target_regnum); | |
2133 | printf_unfiltered ("is not the largest number (%d).\n", | |
2134 | m_next_regnum); | |
2135 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
2136 | reg->target_regnum, m_next_regnum); | |
2137 | } | |
2138 | ||
2139 | if (reg->target_regnum > m_next_regnum) | |
2140 | { | |
2141 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
2142 | m_next_regnum = reg->target_regnum; | |
2143 | } | |
2144 | ||
25aa13e5 | 2145 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
a8142ee1 SM |
2146 | reg->name.c_str (), reg->save_restore); |
2147 | if (!reg->group.empty ()) | |
2148 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
25aa13e5 YQ |
2149 | else |
2150 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 2151 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
ea03d0d3 YQ |
2152 | |
2153 | m_next_regnum++; | |
25aa13e5 YQ |
2154 | } |
2155 | ||
ea03d0d3 YQ |
2156 | private: |
2157 | /* The register number to use for the next register we see. */ | |
2158 | int m_next_regnum = 0; | |
25aa13e5 YQ |
2159 | }; |
2160 | ||
81adfced | 2161 | static void |
e100df1a | 2162 | maint_print_c_tdesc_cmd (const char *args, int from_tty) |
81adfced DJ |
2163 | { |
2164 | const struct target_desc *tdesc; | |
6eb1e6a8 | 2165 | const char *filename; |
81adfced | 2166 | |
8e2141c6 YQ |
2167 | if (args == NULL) |
2168 | { | |
2169 | /* Use the global target-supplied description, not the current | |
2170 | architecture's. This lets a GDB for one architecture generate C | |
2171 | for another architecture's description, even though the gdbarch | |
2172 | initialization code will reject the new description. */ | |
2173 | tdesc = current_target_desc; | |
2174 | filename = target_description_filename; | |
2175 | } | |
2176 | else | |
2177 | { | |
2178 | /* Use the target description from the XML file. */ | |
2179 | filename = args; | |
2180 | tdesc = file_read_description_xml (filename); | |
2181 | } | |
2182 | ||
81adfced DJ |
2183 | if (tdesc == NULL) |
2184 | error (_("There is no target description to print.")); | |
2185 | ||
8e2141c6 | 2186 | if (filename == NULL) |
81adfced DJ |
2187 | error (_("The current target description did not come from an XML file.")); |
2188 | ||
6eb1e6a8 YQ |
2189 | std::string filename_after_features (filename); |
2190 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 2191 | |
6eb1e6a8 YQ |
2192 | if (loc != std::string::npos) |
2193 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 2194 | |
25aa13e5 YQ |
2195 | /* Print c files for target features instead of target descriptions, |
2196 | because c files got from target features are more flexible than the | |
2197 | counterparts. */ | |
6c73f67f YQ |
2198 | if (startswith (filename_after_features.c_str (), "i386/32bit-") |
2199 | || startswith (filename_after_features.c_str (), "i386/64bit-") | |
506fe5f4 | 2200 | || startswith (filename_after_features.c_str (), "i386/x32-core.xml") |
49bdb7ee AH |
2201 | || startswith (filename_after_features.c_str (), "tic6x-") |
2202 | || startswith (filename_after_features.c_str (), "aarch64")) | |
25aa13e5 YQ |
2203 | { |
2204 | print_c_feature v (filename_after_features); | |
81adfced | 2205 | |
25aa13e5 YQ |
2206 | tdesc->accept (v); |
2207 | } | |
2208 | else | |
2209 | { | |
2210 | print_c_tdesc v (filename_after_features); | |
2211 | ||
2212 | tdesc->accept (v); | |
2213 | } | |
81adfced DJ |
2214 | } |
2215 | ||
27d41eac YQ |
2216 | namespace selftests { |
2217 | ||
2218 | static std::vector<std::pair<const char*, const target_desc *>> xml_tdesc; | |
2219 | ||
2220 | #if GDB_SELF_TEST | |
2221 | ||
2222 | /* See target-descritpions.h. */ | |
2223 | ||
2224 | void | |
2225 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
2226 | { | |
2227 | xml_tdesc.emplace_back (xml_file, tdesc); | |
2228 | } | |
2229 | #endif | |
2230 | ||
2231 | } | |
2232 | ||
2233 | /* Check that the target descriptions created dynamically by | |
2234 | architecture-specific code equal the descriptions created from XML files | |
2235 | found in the specified directory DIR. */ | |
2236 | ||
2237 | static void | |
e100df1a | 2238 | maintenance_check_xml_descriptions (const char *dir, int from_tty) |
27d41eac YQ |
2239 | { |
2240 | if (dir == NULL) | |
2241 | error (_("Missing dir name")); | |
2242 | ||
2243 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
2244 | std::string feature_dir (dir1.get ()); | |
2245 | unsigned int failed = 0; | |
2246 | ||
2247 | for (auto const &e : selftests::xml_tdesc) | |
2248 | { | |
2249 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.first); | |
2250 | const target_desc *tdesc | |
2251 | = file_read_description_xml (tdesc_xml.data ()); | |
2252 | ||
2253 | if (tdesc == NULL || *tdesc != *e.second) | |
2254 | failed++; | |
2255 | } | |
2256 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
2257 | (long) selftests::xml_tdesc.size (), failed); | |
2258 | } | |
2259 | ||
23181151 DJ |
2260 | void |
2261 | _initialize_target_descriptions (void) | |
2262 | { | |
123dc839 DJ |
2263 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
2264 | ||
23181151 DJ |
2265 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
2266 | Set target description specific variables."), | |
2267 | &tdesc_set_cmdlist, "set tdesc ", | |
2268 | 0 /* allow-unknown */, &setlist); | |
2269 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
2270 | Show target description specific variables."), | |
2271 | &tdesc_show_cmdlist, "show tdesc ", | |
2272 | 0 /* allow-unknown */, &showlist); | |
2273 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2274 | Unset target description specific variables."), | |
2275 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2276 | 0 /* allow-unknown */, &unsetlist); | |
2277 | ||
2278 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2279 | &tdesc_filename_cmd_string, |
23181151 DJ |
2280 | _("\ |
2281 | Set the file to read for an XML target description"), _("\ | |
2282 | Show the file to read for an XML target description"), _("\ | |
2283 | When set, GDB will read the target description from a local\n\ | |
2284 | file instead of querying the remote target."), | |
2285 | set_tdesc_filename_cmd, | |
2286 | show_tdesc_filename_cmd, | |
2287 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2288 | ||
2289 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2290 | Unset the file to read for an XML target description. When unset,\n\ | |
2291 | GDB will read the description from the target."), | |
2292 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2293 | |
2294 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2295 | Print the current target description as a C source file."), | |
2296 | &maintenanceprintlist); | |
27d41eac YQ |
2297 | |
2298 | cmd_list_element *cmd; | |
2299 | ||
2300 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
2301 | maintenance_check_xml_descriptions, _("\ | |
2302 | Check the target descriptions created in GDB equal the descriptions\n\ | |
2303 | created from XML files in the directory.\n\ | |
2304 | The parameter is the directory name."), | |
2305 | &maintenancechecklist); | |
2306 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 2307 | } |