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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" |
424163ea | 37 | |
6eb1e6a8 YQ |
38 | /* The interface to visit different elements of target description. */ |
39 | ||
40 | class tdesc_element_visitor | |
41 | { | |
42 | public: | |
43 | virtual void visit_pre (const target_desc *e) = 0; | |
44 | virtual void visit_post (const target_desc *e) = 0; | |
45 | ||
46 | virtual void visit (const tdesc_feature *e) = 0; | |
47 | virtual void visit (const tdesc_type *e) = 0; | |
48 | virtual void visit (const tdesc_reg *e) = 0; | |
49 | }; | |
50 | ||
51 | class tdesc_element | |
52 | { | |
53 | public: | |
54 | virtual void accept (tdesc_element_visitor &v) const = 0; | |
55 | }; | |
56 | ||
424163ea DJ |
57 | /* Types. */ |
58 | ||
29709017 DJ |
59 | typedef struct property |
60 | { | |
23181151 DJ |
61 | char *key; |
62 | char *value; | |
29709017 DJ |
63 | } property_s; |
64 | DEF_VEC_O(property_s); | |
65 | ||
123dc839 DJ |
66 | /* An individual register from a target description. */ |
67 | ||
6eb1e6a8 | 68 | typedef struct tdesc_reg : tdesc_element |
123dc839 | 69 | { |
72ddacb7 YQ |
70 | tdesc_reg (struct tdesc_feature *feature, const char *name_, |
71 | int regnum, int save_restore_, const char *group_, | |
72 | int bitsize_, const char *type_) | |
73 | : name (xstrdup (name_)), target_regnum (regnum), | |
74 | save_restore (save_restore_), | |
75 | group (group_ != NULL ? xstrdup (group_) : NULL), | |
76 | bitsize (bitsize_), | |
77 | type (type_ != NULL ? xstrdup (type_) : xstrdup ("<unknown>")) | |
78 | { | |
79 | /* If the register's type is target-defined, look it up now. We may not | |
80 | have easy access to the containing feature when we want it later. */ | |
81 | tdesc_type = tdesc_named_type (feature, type); | |
82 | } | |
83 | ||
6eb1e6a8 | 84 | virtual ~tdesc_reg () |
72ddacb7 YQ |
85 | { |
86 | xfree (name); | |
87 | xfree (type); | |
88 | xfree (group); | |
89 | } | |
90 | ||
91 | /* Disable copying. */ | |
92 | tdesc_reg (const tdesc_reg &) = delete; | |
93 | tdesc_reg &operator= (const tdesc_reg &) = delete; | |
94 | ||
123dc839 DJ |
95 | /* The name of this register. In standard features, it may be |
96 | recognized by the architecture support code, or it may be purely | |
97 | for the user. */ | |
98 | char *name; | |
99 | ||
100 | /* The register number used by this target to refer to this | |
101 | register. This is used for remote p/P packets and to determine | |
102 | the ordering of registers in the remote g/G packets. */ | |
103 | long target_regnum; | |
104 | ||
105 | /* If this flag is set, GDB should save and restore this register | |
106 | around calls to an inferior function. */ | |
107 | int save_restore; | |
108 | ||
109 | /* The name of the register group containing this register, or NULL | |
110 | if the group should be automatically determined from the | |
111 | register's type. If this is "general", "float", or "vector", the | |
112 | corresponding "info" command should display this register's | |
113 | value. It can be an arbitrary string, but should be limited to | |
114 | alphanumeric characters and internal hyphens. Currently other | |
115 | strings are ignored (treated as NULL). */ | |
116 | char *group; | |
117 | ||
118 | /* The size of the register, in bits. */ | |
119 | int bitsize; | |
120 | ||
121 | /* The type of the register. This string corresponds to either | |
122 | a named type from the target description or a predefined | |
123 | type from GDB. */ | |
124 | char *type; | |
125 | ||
126 | /* The target-described type corresponding to TYPE, if found. */ | |
ad068eab | 127 | struct tdesc_type *tdesc_type; |
6eb1e6a8 YQ |
128 | |
129 | void accept (tdesc_element_visitor &v) const override | |
130 | { | |
131 | v.visit (this); | |
132 | } | |
133 | ||
123dc839 DJ |
134 | } *tdesc_reg_p; |
135 | DEF_VEC_P(tdesc_reg_p); | |
136 | ||
137 | /* A named type from a target description. */ | |
ad068eab UW |
138 | |
139 | typedef struct tdesc_type_field | |
140 | { | |
141 | char *name; | |
142 | struct tdesc_type *type; | |
81516450 DE |
143 | /* For non-enum-values, either both are -1 (non-bitfield), or both are |
144 | not -1 (bitfield). For enum values, start is the value (which could be | |
145 | -1), end is -1. */ | |
f5dff777 | 146 | int start, end; |
ad068eab UW |
147 | } tdesc_type_field; |
148 | DEF_VEC_O(tdesc_type_field); | |
149 | ||
52059ffd TT |
150 | enum tdesc_type_kind |
151 | { | |
152 | /* Predefined types. */ | |
81516450 | 153 | TDESC_TYPE_BOOL, |
52059ffd TT |
154 | TDESC_TYPE_INT8, |
155 | TDESC_TYPE_INT16, | |
156 | TDESC_TYPE_INT32, | |
157 | TDESC_TYPE_INT64, | |
158 | TDESC_TYPE_INT128, | |
159 | TDESC_TYPE_UINT8, | |
160 | TDESC_TYPE_UINT16, | |
161 | TDESC_TYPE_UINT32, | |
162 | TDESC_TYPE_UINT64, | |
163 | TDESC_TYPE_UINT128, | |
164 | TDESC_TYPE_CODE_PTR, | |
165 | TDESC_TYPE_DATA_PTR, | |
166 | TDESC_TYPE_IEEE_SINGLE, | |
167 | TDESC_TYPE_IEEE_DOUBLE, | |
168 | TDESC_TYPE_ARM_FPA_EXT, | |
169 | TDESC_TYPE_I387_EXT, | |
170 | ||
171 | /* Types defined by a target feature. */ | |
172 | TDESC_TYPE_VECTOR, | |
173 | TDESC_TYPE_STRUCT, | |
174 | TDESC_TYPE_UNION, | |
81516450 DE |
175 | TDESC_TYPE_FLAGS, |
176 | TDESC_TYPE_ENUM | |
52059ffd TT |
177 | }; |
178 | ||
6eb1e6a8 | 179 | typedef struct tdesc_type : tdesc_element |
ad068eab | 180 | { |
72ddacb7 YQ |
181 | tdesc_type (const char *name_, enum tdesc_type_kind kind_) |
182 | : name (xstrdup (name_)), kind (kind_) | |
183 | { | |
184 | memset (&u, 0, sizeof (u)); | |
185 | } | |
186 | ||
6eb1e6a8 | 187 | virtual ~tdesc_type () |
72ddacb7 YQ |
188 | { |
189 | switch (kind) | |
190 | { | |
191 | case TDESC_TYPE_STRUCT: | |
192 | case TDESC_TYPE_UNION: | |
193 | case TDESC_TYPE_FLAGS: | |
194 | case TDESC_TYPE_ENUM: | |
195 | { | |
196 | struct tdesc_type_field *f; | |
197 | int ix; | |
198 | ||
199 | for (ix = 0; | |
200 | VEC_iterate (tdesc_type_field, u.u.fields, ix, f); | |
201 | ix++) | |
202 | xfree (f->name); | |
203 | ||
204 | VEC_free (tdesc_type_field, u.u.fields); | |
205 | } | |
206 | break; | |
207 | ||
208 | default: | |
209 | break; | |
210 | } | |
211 | xfree ((char *) name); | |
212 | } | |
213 | /* Disable copying. */ | |
214 | tdesc_type (const tdesc_type &) = delete; | |
215 | tdesc_type &operator= (const tdesc_type &) = delete; | |
216 | ||
a121b7c1 PA |
217 | /* The name of this type. If this type is a built-in type, this is |
218 | a pointer to a constant string. Otherwise, it's a | |
219 | malloc-allocated string (and thus must be freed). */ | |
220 | const char *name; | |
ad068eab UW |
221 | |
222 | /* Identify the kind of this type. */ | |
52059ffd | 223 | enum tdesc_type_kind kind; |
ad068eab UW |
224 | |
225 | /* Kind-specific data. */ | |
226 | union | |
227 | { | |
228 | /* Vector type. */ | |
229 | struct | |
230 | { | |
231 | struct tdesc_type *type; | |
232 | int count; | |
233 | } v; | |
234 | ||
81516450 | 235 | /* Struct, union, flags, or enum type. */ |
ad068eab UW |
236 | struct |
237 | { | |
238 | VEC(tdesc_type_field) *fields; | |
54157a25 | 239 | int size; |
ad068eab UW |
240 | } u; |
241 | } u; | |
6eb1e6a8 YQ |
242 | |
243 | void accept (tdesc_element_visitor &v) const override | |
244 | { | |
245 | v.visit (this); | |
246 | } | |
247 | ||
ad068eab UW |
248 | } *tdesc_type_p; |
249 | DEF_VEC_P(tdesc_type_p); | |
123dc839 DJ |
250 | |
251 | /* A feature from a target description. Each feature is a collection | |
252 | of other elements, e.g. registers and types. */ | |
253 | ||
6eb1e6a8 | 254 | typedef struct tdesc_feature : tdesc_element |
123dc839 | 255 | { |
72ddacb7 YQ |
256 | tdesc_feature (const char *name_) |
257 | : name (xstrdup (name_)) | |
258 | {} | |
259 | ||
6eb1e6a8 | 260 | virtual ~tdesc_feature () |
72ddacb7 YQ |
261 | { |
262 | struct tdesc_reg *reg; | |
263 | struct tdesc_type *type; | |
264 | int ix; | |
265 | ||
266 | for (ix = 0; VEC_iterate (tdesc_reg_p, registers, ix, reg); ix++) | |
267 | delete reg; | |
268 | VEC_free (tdesc_reg_p, registers); | |
269 | ||
270 | for (ix = 0; VEC_iterate (tdesc_type_p, types, ix, type); ix++) | |
271 | delete type; | |
272 | VEC_free (tdesc_type_p, types); | |
273 | ||
274 | xfree (name); | |
275 | } | |
276 | ||
277 | /* Disable copying. */ | |
278 | tdesc_feature (const tdesc_feature &) = delete; | |
279 | tdesc_feature &operator= (const tdesc_feature &) = delete; | |
280 | ||
123dc839 DJ |
281 | /* The name of this feature. It may be recognized by the architecture |
282 | support code. */ | |
283 | char *name; | |
284 | ||
285 | /* The registers associated with this feature. */ | |
72ddacb7 | 286 | VEC(tdesc_reg_p) *registers = NULL; |
123dc839 DJ |
287 | |
288 | /* The types associated with this feature. */ | |
72ddacb7 | 289 | VEC(tdesc_type_p) *types = NULL; |
6eb1e6a8 YQ |
290 | |
291 | void accept (tdesc_element_visitor &v) const override | |
292 | { | |
293 | v.visit (this); | |
294 | ||
295 | struct tdesc_type *type; | |
296 | ||
297 | for (int ix = 0; | |
298 | VEC_iterate (tdesc_type_p, types, ix, type); | |
299 | ix++) | |
300 | type->accept (v); | |
301 | ||
302 | struct tdesc_reg *reg; | |
303 | ||
304 | for (int ix = 0; | |
305 | VEC_iterate (tdesc_reg_p, registers, ix, reg); | |
306 | ix++) | |
307 | reg->accept (v); | |
308 | ||
309 | } | |
310 | ||
123dc839 DJ |
311 | } *tdesc_feature_p; |
312 | DEF_VEC_P(tdesc_feature_p); | |
313 | ||
e35359c5 UW |
314 | /* A compatible architecture from a target description. */ |
315 | typedef const struct bfd_arch_info *arch_p; | |
316 | DEF_VEC_P(arch_p); | |
317 | ||
123dc839 DJ |
318 | /* A target description. */ |
319 | ||
6eb1e6a8 | 320 | struct target_desc : tdesc_element |
424163ea | 321 | { |
b468ff4c YQ |
322 | target_desc () |
323 | {} | |
324 | ||
6eb1e6a8 | 325 | virtual ~target_desc () |
b468ff4c YQ |
326 | { |
327 | struct tdesc_feature *feature; | |
328 | struct property *prop; | |
329 | int ix; | |
330 | ||
331 | for (ix = 0; | |
332 | VEC_iterate (tdesc_feature_p, features, ix, feature); | |
333 | ix++) | |
334 | delete feature; | |
335 | VEC_free (tdesc_feature_p, features); | |
336 | ||
337 | for (ix = 0; | |
338 | VEC_iterate (property_s, properties, ix, prop); | |
339 | ix++) | |
340 | { | |
341 | xfree (prop->key); | |
342 | xfree (prop->value); | |
343 | } | |
344 | ||
345 | VEC_free (property_s, properties); | |
346 | VEC_free (arch_p, compatible); | |
347 | } | |
348 | ||
349 | target_desc (const target_desc &) = delete; | |
350 | void operator= (const target_desc &) = delete; | |
351 | ||
23181151 | 352 | /* The architecture reported by the target, if any. */ |
b468ff4c | 353 | const struct bfd_arch_info *arch = NULL; |
23181151 | 354 | |
08d16641 PA |
355 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
356 | otherwise. */ | |
b468ff4c | 357 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 358 | |
e35359c5 | 359 | /* The list of compatible architectures reported by the target. */ |
b468ff4c | 360 | VEC(arch_p) *compatible = NULL; |
e35359c5 | 361 | |
29709017 | 362 | /* Any architecture-specific properties specified by the target. */ |
b468ff4c | 363 | VEC(property_s) *properties = NULL; |
123dc839 DJ |
364 | |
365 | /* The features associated with this target. */ | |
b468ff4c | 366 | VEC(tdesc_feature_p) *features = NULL; |
6eb1e6a8 YQ |
367 | |
368 | void accept (tdesc_element_visitor &v) const override | |
369 | { | |
370 | v.visit_pre (this); | |
371 | ||
372 | struct tdesc_feature *feature; | |
373 | ||
374 | for (int ix = 0; | |
375 | VEC_iterate (tdesc_feature_p, features, ix, feature); | |
376 | ix++) | |
377 | feature->accept (v); | |
378 | ||
379 | v.visit_post (this); | |
380 | } | |
123dc839 DJ |
381 | }; |
382 | ||
383 | /* Per-architecture data associated with a target description. The | |
384 | target description may be shared by multiple architectures, but | |
385 | this data is private to one gdbarch. */ | |
386 | ||
ad068eab UW |
387 | typedef struct tdesc_arch_reg |
388 | { | |
389 | struct tdesc_reg *reg; | |
390 | struct type *type; | |
391 | } tdesc_arch_reg; | |
392 | DEF_VEC_O(tdesc_arch_reg); | |
393 | ||
123dc839 DJ |
394 | struct tdesc_arch_data |
395 | { | |
ad068eab | 396 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
397 | During initialization of the gdbarch this list is used to store |
398 | registers which the architecture assigns a fixed register number. | |
399 | Registers which are NULL in this array, or off the end, are | |
400 | treated as zero-sized and nameless (i.e. placeholders in the | |
401 | numbering). */ | |
ad068eab | 402 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
403 | |
404 | /* Functions which report the register name, type, and reggroups for | |
405 | pseudo-registers. */ | |
406 | gdbarch_register_name_ftype *pseudo_register_name; | |
407 | gdbarch_register_type_ftype *pseudo_register_type; | |
408 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
409 | }; |
410 | ||
6ecd4729 PA |
411 | /* Info about an inferior's target description. There's one of these |
412 | for each inferior. */ | |
424163ea | 413 | |
6ecd4729 PA |
414 | struct target_desc_info |
415 | { | |
416 | /* A flag indicating that a description has already been fetched | |
417 | from the target, so it should not be queried again. */ | |
418 | ||
419 | int fetched; | |
424163ea | 420 | |
6ecd4729 PA |
421 | /* The description fetched from the target, or NULL if the target |
422 | did not supply any description. Only valid when | |
423 | target_desc_fetched is set. Only the description initialization | |
424 | code should access this; normally, the description should be | |
425 | accessed through the gdbarch object. */ | |
424163ea | 426 | |
6ecd4729 | 427 | const struct target_desc *tdesc; |
424163ea | 428 | |
6ecd4729 PA |
429 | /* The filename to read a target description from, as set by "set |
430 | tdesc filename ..." */ | |
424163ea | 431 | |
6ecd4729 PA |
432 | char *filename; |
433 | }; | |
23181151 | 434 | |
6ecd4729 PA |
435 | /* Get the inferior INF's target description info, allocating one on |
436 | the stop if necessary. */ | |
23181151 | 437 | |
6ecd4729 PA |
438 | static struct target_desc_info * |
439 | get_tdesc_info (struct inferior *inf) | |
440 | { | |
441 | if (inf->tdesc_info == NULL) | |
442 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
443 | return inf->tdesc_info; | |
444 | } | |
23181151 | 445 | |
123dc839 DJ |
446 | /* A handle for architecture-specific data associated with the |
447 | target description (see struct tdesc_arch_data). */ | |
448 | ||
449 | static struct gdbarch_data *tdesc_data; | |
450 | ||
6ecd4729 PA |
451 | /* See target-descriptions.h. */ |
452 | ||
453 | int | |
454 | target_desc_info_from_user_p (struct target_desc_info *info) | |
455 | { | |
456 | return info != NULL && info->filename != NULL; | |
457 | } | |
458 | ||
459 | /* See target-descriptions.h. */ | |
460 | ||
461 | void | |
462 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
463 | { | |
464 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
465 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
466 | ||
467 | dest->fetched = src->fetched; | |
468 | dest->tdesc = src->tdesc; | |
469 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
470 | } | |
471 | ||
472 | /* See target-descriptions.h. */ | |
473 | ||
474 | void | |
475 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
476 | { | |
477 | if (tdesc_info != NULL) | |
478 | { | |
479 | xfree (tdesc_info->filename); | |
480 | xfree (tdesc_info); | |
481 | } | |
482 | } | |
483 | ||
484 | /* Convenience helper macros. */ | |
485 | ||
486 | #define target_desc_fetched \ | |
487 | get_tdesc_info (current_inferior ())->fetched | |
488 | #define current_target_desc \ | |
489 | get_tdesc_info (current_inferior ())->tdesc | |
490 | #define target_description_filename \ | |
491 | get_tdesc_info (current_inferior ())->filename | |
492 | ||
493 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
494 | ||
495 | static char *tdesc_filename_cmd_string; | |
496 | ||
424163ea DJ |
497 | /* Fetch the current target's description, and switch the current |
498 | architecture to one which incorporates that description. */ | |
499 | ||
500 | void | |
501 | target_find_description (void) | |
502 | { | |
503 | /* If we've already fetched a description from the target, don't do | |
504 | it again. This allows a target to fetch the description early, | |
505 | during its to_open or to_create_inferior, if it needs extra | |
506 | information about the target to initialize. */ | |
507 | if (target_desc_fetched) | |
508 | return; | |
509 | ||
510 | /* The current architecture should not have any target description | |
511 | specified. It should have been cleared, e.g. when we | |
512 | disconnected from the previous target. */ | |
f5656ead | 513 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 514 | |
23181151 DJ |
515 | /* First try to fetch an XML description from the user-specified |
516 | file. */ | |
517 | current_target_desc = NULL; | |
518 | if (target_description_filename != NULL | |
519 | && *target_description_filename != '\0') | |
520 | current_target_desc | |
521 | = file_read_description_xml (target_description_filename); | |
522 | ||
523 | /* Next try to read the description from the current target using | |
524 | target objects. */ | |
525 | if (current_target_desc == NULL) | |
526 | current_target_desc = target_read_description_xml (¤t_target); | |
527 | ||
528 | /* If that failed try a target-specific hook. */ | |
529 | if (current_target_desc == NULL) | |
530 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
531 | |
532 | /* If a non-NULL description was returned, then update the current | |
533 | architecture. */ | |
534 | if (current_target_desc) | |
535 | { | |
536 | struct gdbarch_info info; | |
537 | ||
538 | gdbarch_info_init (&info); | |
539 | info.target_desc = current_target_desc; | |
540 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
541 | warning (_("Architecture rejected target-supplied description")); |
542 | else | |
543 | { | |
544 | struct tdesc_arch_data *data; | |
545 | ||
19ba03f4 SM |
546 | data = ((struct tdesc_arch_data *) |
547 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 548 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 549 | && data->arch_regs == NULL) |
123dc839 DJ |
550 | warning (_("Target-supplied registers are not supported " |
551 | "by the current architecture")); | |
552 | } | |
424163ea DJ |
553 | } |
554 | ||
555 | /* Now that we know this description is usable, record that we | |
556 | fetched it. */ | |
557 | target_desc_fetched = 1; | |
558 | } | |
559 | ||
560 | /* Discard any description fetched from the current target, and switch | |
561 | the current architecture to one with no target description. */ | |
562 | ||
563 | void | |
564 | target_clear_description (void) | |
565 | { | |
566 | struct gdbarch_info info; | |
567 | ||
568 | if (!target_desc_fetched) | |
569 | return; | |
570 | ||
571 | target_desc_fetched = 0; | |
572 | current_target_desc = NULL; | |
573 | ||
574 | gdbarch_info_init (&info); | |
575 | if (!gdbarch_update_p (info)) | |
576 | internal_error (__FILE__, __LINE__, | |
577 | _("Could not remove target-supplied description")); | |
578 | } | |
579 | ||
580 | /* Return the global current target description. This should only be | |
581 | used by gdbarch initialization code; most access should be through | |
582 | an existing gdbarch. */ | |
583 | ||
584 | const struct target_desc * | |
585 | target_current_description (void) | |
586 | { | |
587 | if (target_desc_fetched) | |
588 | return current_target_desc; | |
589 | ||
590 | return NULL; | |
591 | } | |
e35359c5 UW |
592 | |
593 | /* Return non-zero if this target description is compatible | |
594 | with the given BFD architecture. */ | |
595 | ||
596 | int | |
597 | tdesc_compatible_p (const struct target_desc *target_desc, | |
598 | const struct bfd_arch_info *arch) | |
599 | { | |
600 | const struct bfd_arch_info *compat; | |
601 | int ix; | |
602 | ||
603 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
604 | ix++) | |
605 | { | |
606 | if (compat == arch | |
607 | || arch->compatible (arch, compat) | |
608 | || compat->compatible (compat, arch)) | |
609 | return 1; | |
610 | } | |
611 | ||
612 | return 0; | |
613 | } | |
23181151 DJ |
614 | \f |
615 | ||
123dc839 | 616 | /* Direct accessors for target descriptions. */ |
424163ea | 617 | |
29709017 DJ |
618 | /* Return the string value of a property named KEY, or NULL if the |
619 | property was not specified. */ | |
620 | ||
621 | const char * | |
622 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
623 | { | |
624 | struct property *prop; | |
625 | int ix; | |
626 | ||
627 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
628 | ix++) | |
629 | if (strcmp (prop->key, key) == 0) | |
630 | return prop->value; | |
631 | ||
632 | return NULL; | |
633 | } | |
634 | ||
23181151 DJ |
635 | /* Return the BFD architecture associated with this target |
636 | description, or NULL if no architecture was specified. */ | |
637 | ||
638 | const struct bfd_arch_info * | |
639 | tdesc_architecture (const struct target_desc *target_desc) | |
640 | { | |
641 | return target_desc->arch; | |
642 | } | |
08d16641 PA |
643 | |
644 | /* Return the OSABI associated with this target description, or | |
645 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
646 | ||
647 | enum gdb_osabi | |
648 | tdesc_osabi (const struct target_desc *target_desc) | |
649 | { | |
650 | return target_desc->osabi; | |
651 | } | |
652 | ||
23181151 DJ |
653 | \f |
654 | ||
123dc839 DJ |
655 | /* Return 1 if this target description includes any registers. */ |
656 | ||
657 | int | |
658 | tdesc_has_registers (const struct target_desc *target_desc) | |
659 | { | |
660 | int ix; | |
661 | struct tdesc_feature *feature; | |
662 | ||
663 | if (target_desc == NULL) | |
664 | return 0; | |
665 | ||
666 | for (ix = 0; | |
667 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
668 | ix++) | |
669 | if (! VEC_empty (tdesc_reg_p, feature->registers)) | |
670 | return 1; | |
671 | ||
672 | return 0; | |
673 | } | |
674 | ||
675 | /* Return the feature with the given name, if present, or NULL if | |
676 | the named feature is not found. */ | |
677 | ||
678 | const struct tdesc_feature * | |
679 | tdesc_find_feature (const struct target_desc *target_desc, | |
680 | const char *name) | |
681 | { | |
682 | int ix; | |
683 | struct tdesc_feature *feature; | |
684 | ||
685 | for (ix = 0; | |
686 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
687 | ix++) | |
688 | if (strcmp (feature->name, name) == 0) | |
689 | return feature; | |
690 | ||
691 | return NULL; | |
692 | } | |
693 | ||
694 | /* Return the name of FEATURE. */ | |
695 | ||
696 | const char * | |
697 | tdesc_feature_name (const struct tdesc_feature *feature) | |
698 | { | |
699 | return feature->name; | |
700 | } | |
701 | ||
ad068eab UW |
702 | /* Predefined types. */ |
703 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 704 | { |
81516450 | 705 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
706 | { "int8", TDESC_TYPE_INT8 }, |
707 | { "int16", TDESC_TYPE_INT16 }, | |
708 | { "int32", TDESC_TYPE_INT32 }, | |
709 | { "int64", TDESC_TYPE_INT64 }, | |
710 | { "int128", TDESC_TYPE_INT128 }, | |
711 | { "uint8", TDESC_TYPE_UINT8 }, | |
712 | { "uint16", TDESC_TYPE_UINT16 }, | |
713 | { "uint32", TDESC_TYPE_UINT32 }, | |
714 | { "uint64", TDESC_TYPE_UINT64 }, | |
715 | { "uint128", TDESC_TYPE_UINT128 }, | |
716 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
717 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
718 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
719 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 720 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 721 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 722 | }; |
81adfced | 723 | |
81516450 DE |
724 | /* Lookup a predefined type. */ |
725 | ||
726 | static struct tdesc_type * | |
727 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
728 | { | |
729 | int ix; | |
730 | struct tdesc_type *type; | |
731 | ||
732 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
733 | if (tdesc_predefined_types[ix].kind == kind) | |
734 | return &tdesc_predefined_types[ix]; | |
735 | ||
736 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
737 | } | |
738 | ||
123dc839 DJ |
739 | /* Return the type associated with ID in the context of FEATURE, or |
740 | NULL if none. */ | |
741 | ||
ad068eab | 742 | struct tdesc_type * |
123dc839 DJ |
743 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
744 | { | |
745 | int ix; | |
ad068eab | 746 | struct tdesc_type *type; |
123dc839 DJ |
747 | |
748 | /* First try target-defined types. */ | |
ad068eab UW |
749 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
750 | if (strcmp (type->name, id) == 0) | |
751 | return type; | |
123dc839 | 752 | |
81adfced DJ |
753 | /* Next try the predefined types. */ |
754 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
755 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 756 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
757 | |
758 | return NULL; | |
759 | } | |
ad068eab | 760 | |
9fd3625f L |
761 | /* Lookup type associated with ID. */ |
762 | ||
763 | struct type * | |
764 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
765 | { | |
766 | struct tdesc_arch_reg *reg; | |
767 | struct tdesc_arch_data *data; | |
768 | int i, num_regs; | |
769 | ||
19ba03f4 | 770 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
9fd3625f L |
771 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); |
772 | for (i = 0; i < num_regs; i++) | |
773 | { | |
774 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); | |
775 | if (reg->reg | |
776 | && reg->reg->tdesc_type | |
777 | && reg->type | |
778 | && strcmp (id, reg->reg->tdesc_type->name) == 0) | |
779 | return reg->type; | |
780 | } | |
781 | ||
782 | return NULL; | |
783 | } | |
784 | ||
ad068eab UW |
785 | /* Construct, if necessary, and return the GDB type implementing target |
786 | type TDESC_TYPE for architecture GDBARCH. */ | |
787 | ||
788 | static struct type * | |
789 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
790 | { | |
9fd3625f L |
791 | struct type *type; |
792 | ||
ad068eab UW |
793 | switch (tdesc_type->kind) |
794 | { | |
795 | /* Predefined types. */ | |
81516450 DE |
796 | case TDESC_TYPE_BOOL: |
797 | return builtin_type (gdbarch)->builtin_bool; | |
798 | ||
ad068eab | 799 | case TDESC_TYPE_INT8: |
df4df182 | 800 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
801 | |
802 | case TDESC_TYPE_INT16: | |
df4df182 | 803 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
804 | |
805 | case TDESC_TYPE_INT32: | |
df4df182 | 806 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
807 | |
808 | case TDESC_TYPE_INT64: | |
df4df182 | 809 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
810 | |
811 | case TDESC_TYPE_INT128: | |
df4df182 | 812 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
813 | |
814 | case TDESC_TYPE_UINT8: | |
df4df182 | 815 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
816 | |
817 | case TDESC_TYPE_UINT16: | |
df4df182 | 818 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
819 | |
820 | case TDESC_TYPE_UINT32: | |
df4df182 | 821 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
822 | |
823 | case TDESC_TYPE_UINT64: | |
df4df182 | 824 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
825 | |
826 | case TDESC_TYPE_UINT128: | |
df4df182 | 827 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
828 | |
829 | case TDESC_TYPE_CODE_PTR: | |
830 | return builtin_type (gdbarch)->builtin_func_ptr; | |
831 | ||
832 | case TDESC_TYPE_DATA_PTR: | |
833 | return builtin_type (gdbarch)->builtin_data_ptr; | |
834 | ||
9fd3625f L |
835 | default: |
836 | break; | |
837 | } | |
838 | ||
839 | type = tdesc_find_type (gdbarch, tdesc_type->name); | |
840 | if (type) | |
841 | return type; | |
842 | ||
843 | switch (tdesc_type->kind) | |
844 | { | |
ad068eab | 845 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 846 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 847 | floatformats_ieee_single); |
ad068eab UW |
848 | |
849 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 850 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 851 | floatformats_ieee_double); |
ad068eab UW |
852 | |
853 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 854 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 855 | floatformats_arm_ext); |
ad068eab | 856 | |
9fd3625f L |
857 | case TDESC_TYPE_I387_EXT: |
858 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
859 | floatformats_i387_ext); | |
860 | ||
ad068eab UW |
861 | /* Types defined by a target feature. */ |
862 | case TDESC_TYPE_VECTOR: | |
863 | { | |
864 | struct type *type, *field_type; | |
865 | ||
866 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
867 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
868 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
869 | ||
870 | return type; | |
871 | } | |
872 | ||
f5dff777 DJ |
873 | case TDESC_TYPE_STRUCT: |
874 | { | |
875 | struct type *type, *field_type; | |
876 | struct tdesc_type_field *f; | |
877 | int ix; | |
878 | ||
879 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); | |
880 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
881 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
882 | ||
883 | for (ix = 0; | |
884 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
885 | ix++) | |
886 | { | |
81516450 | 887 | if (f->start != -1 && f->end != -1) |
f5dff777 DJ |
888 | { |
889 | /* Bitfield. */ | |
890 | struct field *fld; | |
891 | struct type *field_type; | |
892 | int bitsize, total_size; | |
893 | ||
81516450 | 894 | /* This invariant should be preserved while creating types. */ |
f5dff777 | 895 | gdb_assert (tdesc_type->u.u.size != 0); |
81516450 DE |
896 | if (f->type != NULL) |
897 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
898 | else if (tdesc_type->u.u.size > 4) | |
f5dff777 DJ |
899 | field_type = builtin_type (gdbarch)->builtin_uint64; |
900 | else | |
901 | field_type = builtin_type (gdbarch)->builtin_uint32; | |
902 | ||
903 | fld = append_composite_type_field_raw (type, xstrdup (f->name), | |
904 | field_type); | |
905 | ||
906 | /* For little-endian, BITPOS counts from the LSB of | |
907 | the structure and marks the LSB of the field. For | |
908 | big-endian, BITPOS counts from the MSB of the | |
909 | structure and marks the MSB of the field. Either | |
910 | way, it is the number of bits to the "left" of the | |
911 | field. To calculate this in big-endian, we need | |
912 | the total size of the structure. */ | |
913 | bitsize = f->end - f->start + 1; | |
914 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; | |
915 | if (gdbarch_bits_big_endian (gdbarch)) | |
f41f5e61 | 916 | SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize); |
f5dff777 | 917 | else |
f41f5e61 | 918 | SET_FIELD_BITPOS (fld[0], f->start); |
f5dff777 DJ |
919 | FIELD_BITSIZE (fld[0]) = bitsize; |
920 | } | |
921 | else | |
922 | { | |
81516450 | 923 | gdb_assert (f->start == -1 && f->end == -1); |
f5dff777 DJ |
924 | field_type = tdesc_gdb_type (gdbarch, f->type); |
925 | append_composite_type_field (type, xstrdup (f->name), | |
926 | field_type); | |
927 | } | |
928 | } | |
929 | ||
930 | if (tdesc_type->u.u.size != 0) | |
931 | TYPE_LENGTH (type) = tdesc_type->u.u.size; | |
932 | return type; | |
933 | } | |
934 | ||
ad068eab UW |
935 | case TDESC_TYPE_UNION: |
936 | { | |
937 | struct type *type, *field_type; | |
938 | struct tdesc_type_field *f; | |
939 | int ix; | |
940 | ||
e9bb382b | 941 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
ad068eab UW |
942 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
943 | ||
944 | for (ix = 0; | |
945 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
946 | ix++) | |
947 | { | |
948 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
949 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
950 | ||
f5dff777 | 951 | /* If any of the children of a union are vectors, flag the |
ad068eab UW |
952 | union as a vector also. This allows e.g. a union of two |
953 | vector types to show up automatically in "info vector". */ | |
954 | if (TYPE_VECTOR (field_type)) | |
955 | TYPE_VECTOR (type) = 1; | |
956 | } | |
f5dff777 DJ |
957 | return type; |
958 | } | |
959 | ||
960 | case TDESC_TYPE_FLAGS: | |
961 | { | |
81516450 | 962 | struct tdesc_type_field *f; |
f5dff777 DJ |
963 | int ix; |
964 | ||
3494b66d | 965 | type = arch_flags_type (gdbarch, tdesc_type->name, |
81516450 DE |
966 | tdesc_type->u.u.size); |
967 | for (ix = 0; | |
968 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
969 | ix++) | |
970 | { | |
971 | struct type *field_type; | |
972 | int bitsize = f->end - f->start + 1; | |
973 | ||
974 | gdb_assert (f->type != NULL); | |
975 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
976 | append_flags_type_field (type, f->start, bitsize, | |
977 | field_type, f->name); | |
978 | } | |
979 | ||
980 | return type; | |
981 | } | |
982 | ||
983 | case TDESC_TYPE_ENUM: | |
984 | { | |
985 | struct tdesc_type_field *f; | |
986 | int ix; | |
987 | ||
988 | type = arch_type (gdbarch, TYPE_CODE_ENUM, | |
989 | tdesc_type->u.u.size, tdesc_type->name); | |
990 | TYPE_UNSIGNED (type) = 1; | |
f5dff777 | 991 | for (ix = 0; |
81516450 | 992 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
f5dff777 | 993 | ix++) |
81516450 DE |
994 | { |
995 | struct field *fld | |
996 | = append_composite_type_field_raw (type, xstrdup (f->name), | |
997 | NULL); | |
998 | ||
999 | SET_FIELD_BITPOS (fld[0], f->start); | |
1000 | } | |
ad068eab UW |
1001 | |
1002 | return type; | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | internal_error (__FILE__, __LINE__, | |
1007 | "Type \"%s\" has an unknown kind %d", | |
1008 | tdesc_type->name, tdesc_type->kind); | |
1009 | } | |
123dc839 DJ |
1010 | \f |
1011 | ||
1012 | /* Support for registers from target descriptions. */ | |
1013 | ||
1014 | /* Construct the per-gdbarch data. */ | |
1015 | ||
1016 | static void * | |
1017 | tdesc_data_init (struct obstack *obstack) | |
1018 | { | |
1019 | struct tdesc_arch_data *data; | |
1020 | ||
1021 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
1022 | return data; | |
1023 | } | |
1024 | ||
1025 | /* Similar, but for the temporary copy used during architecture | |
1026 | initialization. */ | |
1027 | ||
1028 | struct tdesc_arch_data * | |
1029 | tdesc_data_alloc (void) | |
1030 | { | |
41bf6aca | 1031 | return XCNEW (struct tdesc_arch_data); |
123dc839 DJ |
1032 | } |
1033 | ||
1034 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
1035 | to be used (for instance if it was unsuitable for the | |
1036 | architecture). */ | |
1037 | ||
1038 | void | |
1039 | tdesc_data_cleanup (void *data_untyped) | |
1040 | { | |
19ba03f4 | 1041 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 1042 | |
ad068eab | 1043 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
1044 | xfree (data); |
1045 | } | |
1046 | ||
1047 | /* Search FEATURE for a register named NAME. */ | |
1048 | ||
7cc46491 DJ |
1049 | static struct tdesc_reg * |
1050 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
1051 | const char *name) | |
123dc839 DJ |
1052 | { |
1053 | int ixr; | |
1054 | struct tdesc_reg *reg; | |
1055 | ||
1056 | for (ixr = 0; | |
1057 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1058 | ixr++) | |
1059 | if (strcasecmp (reg->name, name) == 0) | |
7cc46491 | 1060 | return reg; |
123dc839 | 1061 | |
7cc46491 DJ |
1062 | return NULL; |
1063 | } | |
1064 | ||
1065 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
1066 | ||
1067 | int | |
1068 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
1069 | struct tdesc_arch_data *data, | |
1070 | int regno, const char *name) | |
1071 | { | |
ad068eab | 1072 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
1073 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
1074 | ||
1075 | if (reg == NULL) | |
1076 | return 0; | |
1077 | ||
1078 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
1079 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
1080 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
1081 | ||
1082 | arch_reg.reg = reg; | |
1083 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 1084 | return 1; |
123dc839 DJ |
1085 | } |
1086 | ||
58d6951d DJ |
1087 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
1088 | register number to it. */ | |
1089 | ||
1090 | int | |
1091 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
1092 | const char *name) | |
1093 | { | |
1094 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1095 | ||
1096 | if (reg == NULL) | |
1097 | return 0; | |
1098 | ||
1099 | return 1; | |
1100 | } | |
1101 | ||
7cc46491 DJ |
1102 | /* Search FEATURE for a register whose name is in NAMES and assign |
1103 | REGNO to it. */ | |
123dc839 DJ |
1104 | |
1105 | int | |
1106 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
1107 | struct tdesc_arch_data *data, | |
1108 | int regno, const char *const names[]) | |
1109 | { | |
1110 | int i; | |
1111 | ||
1112 | for (i = 0; names[i] != NULL; i++) | |
1113 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
1114 | return 1; | |
1115 | ||
1116 | return 0; | |
1117 | } | |
1118 | ||
7cc46491 DJ |
1119 | /* Search FEATURE for a register named NAME, and return its size in |
1120 | bits. The register must exist. */ | |
1121 | ||
1122 | int | |
1123 | tdesc_register_size (const struct tdesc_feature *feature, | |
1124 | const char *name) | |
1125 | { | |
1126 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1127 | ||
1128 | gdb_assert (reg != NULL); | |
1129 | return reg->bitsize; | |
1130 | } | |
1131 | ||
123dc839 DJ |
1132 | /* Look up a register by its GDB internal register number. */ |
1133 | ||
ad068eab UW |
1134 | static struct tdesc_arch_reg * |
1135 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 1136 | { |
123dc839 DJ |
1137 | struct tdesc_arch_data *data; |
1138 | ||
19ba03f4 | 1139 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab UW |
1140 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
1141 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
1142 | else |
1143 | return NULL; | |
1144 | } | |
1145 | ||
ad068eab UW |
1146 | static struct tdesc_reg * |
1147 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
1148 | { | |
1149 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 1150 | |
ad068eab UW |
1151 | return reg? reg->reg : NULL; |
1152 | } | |
1153 | ||
f8b73d13 DJ |
1154 | /* Return the name of register REGNO, from the target description or |
1155 | from an architecture-provided pseudo_register_name method. */ | |
1156 | ||
1157 | const char * | |
d93859e2 | 1158 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 1159 | { |
d93859e2 UW |
1160 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1161 | int num_regs = gdbarch_num_regs (gdbarch); | |
1162 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
1163 | |
1164 | if (reg != NULL) | |
1165 | return reg->name; | |
1166 | ||
1167 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1168 | { | |
19ba03f4 SM |
1169 | struct tdesc_arch_data *data |
1170 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1171 | |
123dc839 | 1172 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 1173 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
1174 | } |
1175 | ||
1176 | return ""; | |
1177 | } | |
1178 | ||
58d6951d | 1179 | struct type * |
123dc839 DJ |
1180 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
1181 | { | |
ad068eab UW |
1182 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
1183 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1184 | int num_regs = gdbarch_num_regs (gdbarch); |
1185 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1186 | ||
1187 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1188 | { | |
19ba03f4 SM |
1189 | struct tdesc_arch_data *data |
1190 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1191 | |
123dc839 DJ |
1192 | gdb_assert (data->pseudo_register_type != NULL); |
1193 | return data->pseudo_register_type (gdbarch, regno); | |
1194 | } | |
1195 | ||
1196 | if (reg == NULL) | |
1197 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1198 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1199 | |
ad068eab | 1200 | if (arch_reg->type == NULL) |
123dc839 | 1201 | { |
ad068eab UW |
1202 | /* First check for a predefined or target defined type. */ |
1203 | if (reg->tdesc_type) | |
1204 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
1205 | ||
1206 | /* Next try size-sensitive type shortcuts. */ | |
1207 | else if (strcmp (reg->type, "float") == 0) | |
1208 | { | |
1209 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1210 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1211 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1212 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1213 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1214 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1215 | else | |
1216 | { | |
1217 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1218 | reg->name, reg->bitsize); | |
1219 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1220 | } | |
1221 | } | |
1222 | else if (strcmp (reg->type, "int") == 0) | |
1223 | { | |
1224 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1225 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1226 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1227 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1228 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1229 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1230 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1231 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1232 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1233 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1234 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1235 | /* A bit desperate by this point... */ |
ad068eab UW |
1236 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1237 | else | |
1238 | { | |
1239 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1240 | reg->name, reg->bitsize); | |
1241 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1242 | } | |
1243 | } | |
1244 | ||
1245 | if (arch_reg->type == NULL) | |
1246 | internal_error (__FILE__, __LINE__, | |
1247 | "Register \"%s\" has an unknown type \"%s\"", | |
1248 | reg->name, reg->type); | |
123dc839 | 1249 | } |
123dc839 | 1250 | |
ad068eab | 1251 | return arch_reg->type; |
123dc839 DJ |
1252 | } |
1253 | ||
1254 | static int | |
1255 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1256 | { | |
1257 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1258 | ||
1259 | if (reg != NULL) | |
1260 | return reg->target_regnum; | |
1261 | else | |
1262 | return -1; | |
1263 | } | |
1264 | ||
1265 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
1266 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
1267 | Unlike a gdbarch register_reggroup_p method, this function will |
1268 | return -1 if it does not know; the caller should handle registers | |
1269 | with no specified group. | |
123dc839 DJ |
1270 | |
1271 | Arbitrary strings (other than "general", "float", and "vector") | |
1272 | from the description are not used; they cause the register to be | |
1273 | displayed in "info all-registers" but excluded from "info | |
1274 | registers" et al. The names of containing features are also not | |
1275 | used. This might be extended to display registers in some more | |
1276 | useful groupings. | |
1277 | ||
1278 | The save-restore flag is also implemented here. */ | |
1279 | ||
f8b73d13 DJ |
1280 | int |
1281 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1282 | struct reggroup *reggroup) | |
123dc839 | 1283 | { |
123dc839 DJ |
1284 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1285 | ||
123dc839 DJ |
1286 | if (reg != NULL && reg->group != NULL) |
1287 | { | |
1288 | int general_p = 0, float_p = 0, vector_p = 0; | |
1289 | ||
1290 | if (strcmp (reg->group, "general") == 0) | |
1291 | general_p = 1; | |
1292 | else if (strcmp (reg->group, "float") == 0) | |
1293 | float_p = 1; | |
1294 | else if (strcmp (reg->group, "vector") == 0) | |
1295 | vector_p = 1; | |
1296 | ||
1297 | if (reggroup == float_reggroup) | |
1298 | return float_p; | |
1299 | ||
1300 | if (reggroup == vector_reggroup) | |
1301 | return vector_p; | |
1302 | ||
1303 | if (reggroup == general_reggroup) | |
1304 | return general_p; | |
1305 | } | |
1306 | ||
1307 | if (reg != NULL | |
1308 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1309 | return reg->save_restore; | |
1310 | ||
f8b73d13 DJ |
1311 | return -1; |
1312 | } | |
1313 | ||
1314 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1315 | group specified go to the default reggroup function and are handled | |
1316 | by type. */ | |
1317 | ||
1318 | static int | |
1319 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1320 | struct reggroup *reggroup) | |
1321 | { | |
1322 | int num_regs = gdbarch_num_regs (gdbarch); | |
1323 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1324 | int ret; | |
1325 | ||
1326 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1327 | { | |
19ba03f4 SM |
1328 | struct tdesc_arch_data *data |
1329 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1330 | |
58d6951d DJ |
1331 | if (data->pseudo_register_reggroup_p != NULL) |
1332 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1333 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1334 | } |
1335 | ||
1336 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1337 | if (ret != -1) | |
1338 | return ret; | |
1339 | ||
123dc839 DJ |
1340 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1341 | } | |
1342 | ||
1343 | /* Record architecture-specific functions to call for pseudo-register | |
1344 | support. */ | |
1345 | ||
1346 | void | |
1347 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1348 | gdbarch_register_name_ftype *pseudo_name) | |
1349 | { | |
19ba03f4 SM |
1350 | struct tdesc_arch_data *data |
1351 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1352 | |
1353 | data->pseudo_register_name = pseudo_name; | |
1354 | } | |
1355 | ||
1356 | void | |
1357 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1358 | gdbarch_register_type_ftype *pseudo_type) | |
1359 | { | |
19ba03f4 SM |
1360 | struct tdesc_arch_data *data |
1361 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1362 | |
1363 | data->pseudo_register_type = pseudo_type; | |
1364 | } | |
1365 | ||
1366 | void | |
1367 | set_tdesc_pseudo_register_reggroup_p | |
1368 | (struct gdbarch *gdbarch, | |
1369 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1370 | { | |
19ba03f4 SM |
1371 | struct tdesc_arch_data *data |
1372 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1373 | |
1374 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1375 | } | |
1376 | ||
1377 | /* Update GDBARCH to use the target description for registers. */ | |
1378 | ||
1379 | void | |
1380 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1381 | const struct target_desc *target_desc, |
123dc839 DJ |
1382 | struct tdesc_arch_data *early_data) |
1383 | { | |
1384 | int num_regs = gdbarch_num_regs (gdbarch); | |
c6913b7d | 1385 | int ixf, ixr; |
123dc839 DJ |
1386 | struct tdesc_feature *feature; |
1387 | struct tdesc_reg *reg; | |
1388 | struct tdesc_arch_data *data; | |
ad068eab | 1389 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
1390 | htab_t reg_hash; |
1391 | ||
123dc839 DJ |
1392 | /* We can't use the description for registers if it doesn't describe |
1393 | any. This function should only be called after validating | |
1394 | registers, so the caller should know that registers are | |
1395 | included. */ | |
1396 | gdb_assert (tdesc_has_registers (target_desc)); | |
1397 | ||
19ba03f4 | 1398 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1399 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
1400 | xfree (early_data); |
1401 | ||
1402 | /* Build up a set of all registers, so that we can assign register | |
1403 | numbers where needed. The hash table expands as necessary, so | |
1404 | the initial size is arbitrary. */ | |
1405 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
1406 | for (ixf = 0; | |
1407 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1408 | ixf++) | |
1409 | for (ixr = 0; | |
1410 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1411 | ixr++) | |
1412 | { | |
1413 | void **slot = htab_find_slot (reg_hash, reg, INSERT); | |
1414 | ||
1415 | *slot = reg; | |
1416 | } | |
1417 | ||
1418 | /* Remove any registers which were assigned numbers by the | |
1419 | architecture. */ | |
ad068eab UW |
1420 | for (ixr = 0; |
1421 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); | |
1422 | ixr++) | |
1423 | if (arch_reg->reg) | |
1424 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
1425 | |
1426 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1427 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1428 | Iterate over the features, not the hash table, so that the order |
1429 | matches that in the target description. */ | |
1430 | ||
ad068eab UW |
1431 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1432 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1433 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1434 | for (ixf = 0; |
1435 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1436 | ixf++) | |
1437 | for (ixr = 0; | |
1438 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1439 | ixr++) | |
1440 | if (htab_find (reg_hash, reg) != NULL) | |
1441 | { | |
ad068eab UW |
1442 | new_arch_reg.reg = reg; |
1443 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1444 | num_regs++; |
1445 | } | |
1446 | ||
1447 | htab_delete (reg_hash); | |
1448 | ||
1449 | /* Update the architecture. */ | |
1450 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1451 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1452 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1453 | set_gdbarch_remote_register_number (gdbarch, | |
1454 | tdesc_remote_register_number); | |
1455 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1456 | } | |
1457 | \f | |
1458 | ||
123dc839 DJ |
1459 | void |
1460 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1461 | int regnum, int save_restore, const char *group, | |
1462 | int bitsize, const char *type) | |
1463 | { | |
72ddacb7 YQ |
1464 | tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, |
1465 | group, bitsize, type); | |
123dc839 DJ |
1466 | |
1467 | VEC_safe_push (tdesc_reg_p, feature->registers, reg); | |
1468 | } | |
1469 | ||
ad068eab UW |
1470 | struct tdesc_type * |
1471 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1472 | struct tdesc_type *field_type, int count) | |
1473 | { | |
72ddacb7 | 1474 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_VECTOR); |
ad068eab | 1475 | |
ad068eab UW |
1476 | type->u.v.type = field_type; |
1477 | type->u.v.count = count; | |
1478 | ||
1479 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1480 | return type; | |
1481 | } | |
1482 | ||
f5dff777 DJ |
1483 | struct tdesc_type * |
1484 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
1485 | { | |
72ddacb7 | 1486 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_STRUCT); |
f5dff777 DJ |
1487 | |
1488 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1489 | return type; | |
1490 | } | |
1491 | ||
1492 | /* Set the total length of TYPE. Structs which contain bitfields may | |
1493 | omit the reserved bits, so the end of the last field may not | |
1494 | suffice. */ | |
1495 | ||
1496 | void | |
54157a25 | 1497 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
f5dff777 DJ |
1498 | { |
1499 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1500 | gdb_assert (size > 0); |
f5dff777 DJ |
1501 | type->u.u.size = size; |
1502 | } | |
1503 | ||
ad068eab UW |
1504 | struct tdesc_type * |
1505 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1506 | { | |
72ddacb7 | 1507 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_UNION); |
ad068eab UW |
1508 | |
1509 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1510 | return type; | |
1511 | } | |
1512 | ||
f5dff777 DJ |
1513 | struct tdesc_type * |
1514 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
54157a25 | 1515 | int size) |
f5dff777 | 1516 | { |
72ddacb7 | 1517 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_FLAGS); |
f5dff777 | 1518 | |
54157a25 DE |
1519 | gdb_assert (size > 0); |
1520 | ||
81516450 | 1521 | type->u.u.size = size; |
f5dff777 DJ |
1522 | |
1523 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1524 | return type; | |
1525 | } | |
1526 | ||
81516450 DE |
1527 | struct tdesc_type * |
1528 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
1529 | int size) | |
1530 | { | |
72ddacb7 | 1531 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_ENUM); |
81516450 DE |
1532 | |
1533 | gdb_assert (size > 0); | |
1534 | ||
81516450 DE |
1535 | type->u.u.size = size; |
1536 | ||
1537 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1538 | return type; | |
1539 | } | |
1540 | ||
1541 | /* Add a new field to TYPE. */ | |
f5dff777 | 1542 | |
ad068eab UW |
1543 | void |
1544 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1545 | struct tdesc_type *field_type) | |
1546 | { | |
1547 | struct tdesc_type_field f = { 0 }; | |
1548 | ||
f5dff777 DJ |
1549 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1550 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab UW |
1551 | |
1552 | f.name = xstrdup (field_name); | |
1553 | f.type = field_type; | |
81516450 DE |
1554 | /* Initialize these values so we know this is not a bit-field |
1555 | when we print-c-tdesc. */ | |
1556 | f.start = -1; | |
1557 | f.end = -1; | |
ad068eab UW |
1558 | |
1559 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1560 | } | |
1561 | ||
81516450 | 1562 | /* Add a new typed bitfield to TYPE. */ |
f5dff777 DJ |
1563 | |
1564 | void | |
81516450 DE |
1565 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
1566 | int start, int end, struct tdesc_type *field_type) | |
f5dff777 DJ |
1567 | { |
1568 | struct tdesc_type_field f = { 0 }; | |
1569 | ||
81516450 DE |
1570 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1571 | || type->kind == TDESC_TYPE_FLAGS); | |
1572 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 DJ |
1573 | |
1574 | f.name = xstrdup (field_name); | |
1575 | f.start = start; | |
1576 | f.end = end; | |
81516450 | 1577 | f.type = field_type; |
f5dff777 DJ |
1578 | |
1579 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1580 | } | |
1581 | ||
81516450 DE |
1582 | /* Add a new untyped bitfield to TYPE. |
1583 | Untyped bitfields become either uint32 or uint64 depending on the size | |
1584 | of the underlying type. */ | |
1585 | ||
1586 | void | |
1587 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, | |
1588 | int start, int end) | |
1589 | { | |
1590 | struct tdesc_type *field_type; | |
1591 | ||
1592 | gdb_assert (start >= 0 && end >= start); | |
1593 | ||
1594 | if (type->u.u.size > 4) | |
1595 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
1596 | else | |
1597 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1598 | ||
1599 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1600 | } | |
1601 | ||
1602 | /* A flag is just a typed(bool) single-bit bitfield. | |
1603 | This function is kept to minimize changes in generated files. */ | |
1604 | ||
f5dff777 DJ |
1605 | void |
1606 | tdesc_add_flag (struct tdesc_type *type, int start, | |
1607 | const char *flag_name) | |
1608 | { | |
81516450 | 1609 | struct tdesc_type_field f = { 0 }; |
f5dff777 | 1610 | |
81516450 DE |
1611 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1612 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 DJ |
1613 | |
1614 | f.name = xstrdup (flag_name); | |
1615 | f.start = start; | |
81516450 DE |
1616 | f.end = start; |
1617 | f.type = tdesc_predefined_type (TDESC_TYPE_BOOL); | |
f5dff777 | 1618 | |
81516450 DE |
1619 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
1620 | } | |
1621 | ||
1622 | void | |
1623 | tdesc_add_enum_value (struct tdesc_type *type, int value, | |
1624 | const char *name) | |
1625 | { | |
1626 | struct tdesc_type_field f = { 0 }; | |
1627 | ||
1628 | gdb_assert (type->kind == TDESC_TYPE_ENUM); | |
1629 | ||
1630 | f.name = xstrdup (name); | |
1631 | f.start = value; | |
1632 | f.end = -1; | |
1633 | f.type = tdesc_predefined_type (TDESC_TYPE_INT32); | |
1634 | ||
1635 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
f5dff777 DJ |
1636 | } |
1637 | ||
123dc839 DJ |
1638 | struct tdesc_feature * |
1639 | tdesc_create_feature (struct target_desc *tdesc, const char *name) | |
1640 | { | |
72ddacb7 | 1641 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 DJ |
1642 | |
1643 | VEC_safe_push (tdesc_feature_p, tdesc->features, new_feature); | |
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 | { | |
1671 | const struct bfd_arch_info *compat; | |
1672 | int ix; | |
1673 | ||
1674 | /* If this instance of GDB is compiled without BFD support for the | |
1675 | compatible architecture, simply ignore it -- we would not be able | |
1676 | to handle it anyway. */ | |
1677 | if (compatible == NULL) | |
1678 | return; | |
1679 | ||
1680 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
1681 | ix++) | |
1682 | if (compat == compatible) | |
1683 | internal_error (__FILE__, __LINE__, | |
1684 | _("Attempted to add duplicate " | |
1685 | "compatible architecture \"%s\""), | |
1686 | compatible->printable_name); | |
1687 | ||
1688 | VEC_safe_push (arch_p, target_desc->compatible, compatible); | |
1689 | } | |
1690 | ||
29709017 DJ |
1691 | void |
1692 | set_tdesc_property (struct target_desc *target_desc, | |
1693 | const char *key, const char *value) | |
1694 | { | |
1695 | struct property *prop, new_prop; | |
1696 | int ix; | |
1697 | ||
1698 | gdb_assert (key != NULL && value != NULL); | |
1699 | ||
1700 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1701 | ix++) | |
1702 | if (strcmp (prop->key, key) == 0) | |
1703 | internal_error (__FILE__, __LINE__, | |
1704 | _("Attempted to add duplicate property \"%s\""), key); | |
1705 | ||
23181151 DJ |
1706 | new_prop.key = xstrdup (key); |
1707 | new_prop.value = xstrdup (value); | |
29709017 DJ |
1708 | VEC_safe_push (property_s, target_desc->properties, &new_prop); |
1709 | } | |
23181151 DJ |
1710 | |
1711 | void | |
1712 | set_tdesc_architecture (struct target_desc *target_desc, | |
1713 | const struct bfd_arch_info *arch) | |
1714 | { | |
1715 | target_desc->arch = arch; | |
1716 | } | |
08d16641 PA |
1717 | |
1718 | void | |
1719 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1720 | { | |
1721 | target_desc->osabi = osabi; | |
1722 | } | |
23181151 DJ |
1723 | \f |
1724 | ||
1725 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1726 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1727 | ||
1728 | /* Helper functions for the CLI commands. */ | |
1729 | ||
1730 | static void | |
1731 | set_tdesc_cmd (char *args, int from_tty) | |
1732 | { | |
635c7e8a | 1733 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1734 | } |
1735 | ||
1736 | static void | |
1737 | show_tdesc_cmd (char *args, int from_tty) | |
1738 | { | |
1739 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1740 | } | |
1741 | ||
1742 | static void | |
1743 | unset_tdesc_cmd (char *args, int from_tty) | |
1744 | { | |
635c7e8a | 1745 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1746 | } |
1747 | ||
1748 | static void | |
1749 | set_tdesc_filename_cmd (char *args, int from_tty, | |
1750 | struct cmd_list_element *c) | |
1751 | { | |
6ecd4729 PA |
1752 | xfree (target_description_filename); |
1753 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1754 | ||
23181151 DJ |
1755 | target_clear_description (); |
1756 | target_find_description (); | |
1757 | } | |
1758 | ||
1759 | static void | |
1760 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1761 | struct cmd_list_element *c, | |
1762 | const char *value) | |
1763 | { | |
6ecd4729 PA |
1764 | value = target_description_filename; |
1765 | ||
23181151 | 1766 | if (value != NULL && *value != '\0') |
3e43a32a | 1767 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1768 | value); |
1769 | else | |
3e43a32a MS |
1770 | printf_filtered (_("The target description will be " |
1771 | "read from the target.\n")); | |
23181151 DJ |
1772 | } |
1773 | ||
1774 | static void | |
1775 | unset_tdesc_filename_cmd (char *args, int from_tty) | |
1776 | { | |
1777 | xfree (target_description_filename); | |
1778 | target_description_filename = NULL; | |
1779 | target_clear_description (); | |
1780 | target_find_description (); | |
1781 | } | |
1782 | ||
6eb1e6a8 YQ |
1783 | /* Print target description in C. */ |
1784 | ||
1785 | class print_c_tdesc : public tdesc_element_visitor | |
1786 | { | |
1787 | public: | |
1788 | print_c_tdesc (std::string &filename_after_features) | |
1789 | : m_filename_after_features (filename_after_features) | |
1790 | { | |
1791 | const char *inp; | |
1792 | char *outp; | |
1793 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1794 | ||
1795 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1796 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1797 | if (*inp == '.') | |
1798 | break; | |
1799 | else if (*inp == '-') | |
1800 | *outp++ = '_'; | |
1801 | else | |
1802 | *outp++ = *inp; | |
1803 | *outp = '\0'; | |
1804 | ||
1805 | /* Standard boilerplate. */ | |
1806 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1807 | "-*- buffer-read-only: t -*- vi" | |
1808 | ":set ro:\n"); | |
1809 | printf_unfiltered (" Original: %s */\n\n", filename); | |
1810 | } | |
1811 | ||
1812 | ~print_c_tdesc () | |
1813 | { | |
1814 | xfree (m_function); | |
1815 | } | |
1816 | ||
1817 | void visit_pre (const target_desc *e) override | |
1818 | { | |
1819 | printf_unfiltered ("#include \"defs.h\"\n"); | |
1820 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1821 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1822 | printf_unfiltered ("\n"); | |
1823 | ||
1824 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1825 | printf_unfiltered ("static void\n"); | |
1826 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1827 | printf_unfiltered ("{\n"); | |
1828 | printf_unfiltered | |
1829 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1830 | ||
1831 | if (tdesc_architecture (e) != NULL) | |
1832 | { | |
1833 | printf_unfiltered | |
1834 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1835 | tdesc_architecture (e)->printable_name); | |
1836 | printf_unfiltered ("\n"); | |
1837 | } | |
1838 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1839 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1840 | { | |
1841 | printf_unfiltered | |
1842 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1843 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1844 | printf_unfiltered ("\n"); | |
1845 | } | |
1846 | ||
1847 | int ix; | |
1848 | const struct bfd_arch_info *compatible; | |
1849 | struct property *prop; | |
1850 | ||
1851 | for (ix = 0; VEC_iterate (arch_p, e->compatible, ix, compatible); | |
1852 | ix++) | |
1853 | { | |
1854 | printf_unfiltered | |
1855 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1856 | compatible->printable_name); | |
1857 | } | |
1858 | ||
1859 | if (ix) | |
1860 | printf_unfiltered ("\n"); | |
1861 | ||
1862 | for (ix = 0; VEC_iterate (property_s, e->properties, ix, prop); | |
1863 | ix++) | |
1864 | { | |
1865 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1866 | prop->key, prop->value); | |
1867 | } | |
1868 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
1869 | } | |
1870 | ||
1871 | void visit (const tdesc_feature *e) override | |
1872 | { | |
1873 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
1874 | e->name); | |
1875 | } | |
1876 | ||
1877 | void visit_post (const target_desc *e) override | |
1878 | { | |
1879 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1880 | printf_unfiltered ("}\n"); | |
1881 | } | |
1882 | ||
1883 | void visit (const tdesc_type *type) override | |
1884 | { | |
1885 | struct tdesc_type_field *f; | |
1886 | ||
1887 | /* Now we do some "filtering" in order to know which variables to | |
1888 | declare. This is needed because otherwise we would declare unused | |
1889 | variables `field_type' and `type'. */ | |
1890 | if (!m_printed_field_type) | |
1891 | { | |
1892 | printf_unfiltered (" struct tdesc_type *field_type;\n"); | |
1893 | m_printed_field_type = true; | |
1894 | } | |
1895 | ||
1896 | if ((type->kind == TDESC_TYPE_UNION | |
1897 | || type->kind == TDESC_TYPE_STRUCT | |
1898 | || type->kind == TDESC_TYPE_FLAGS | |
1899 | || type->kind == TDESC_TYPE_ENUM) | |
1900 | && VEC_length (tdesc_type_field, type->u.u.fields) > 0 | |
1901 | && !m_printed_type) | |
1902 | { | |
1903 | printf_unfiltered (" struct tdesc_type *type;\n"); | |
1904 | m_printed_type = true; | |
1905 | } | |
1906 | ||
1907 | switch (type->kind) | |
1908 | { | |
1909 | case TDESC_TYPE_VECTOR: | |
1910 | printf_unfiltered | |
1911 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
1912 | type->u.v.type->name); | |
1913 | printf_unfiltered | |
1914 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", | |
1915 | type->name, type->u.v.count); | |
1916 | break; | |
1917 | case TDESC_TYPE_STRUCT: | |
1918 | case TDESC_TYPE_FLAGS: | |
1919 | if (type->kind == TDESC_TYPE_STRUCT) | |
1920 | { | |
1921 | printf_unfiltered | |
1922 | (" type = tdesc_create_struct (feature, \"%s\");\n", | |
1923 | type->name); | |
1924 | if (type->u.u.size != 0) | |
1925 | printf_unfiltered | |
1926 | (" tdesc_set_struct_size (type, %d);\n", | |
1927 | type->u.u.size); | |
1928 | } | |
1929 | else | |
1930 | { | |
1931 | printf_unfiltered | |
1932 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", | |
1933 | type->name, type->u.u.size); | |
1934 | } | |
1935 | for (int ix3 = 0; | |
1936 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1937 | ix3++) | |
1938 | { | |
1939 | const char *type_name; | |
1940 | ||
1941 | gdb_assert (f->type != NULL); | |
1942 | type_name = f->type->name; | |
1943 | ||
1944 | /* To minimize changes to generated files, don't emit type | |
1945 | info for fields that have defaulted types. */ | |
1946 | if (f->start != -1) | |
1947 | { | |
1948 | gdb_assert (f->end != -1); | |
1949 | if (f->type->kind == TDESC_TYPE_BOOL) | |
1950 | { | |
1951 | gdb_assert (f->start == f->end); | |
1952 | printf_unfiltered | |
1953 | (" tdesc_add_flag (type, %d, \"%s\");\n", | |
1954 | f->start, f->name); | |
1955 | } | |
1956 | else if ((type->u.u.size == 4 | |
1957 | && f->type->kind == TDESC_TYPE_UINT32) | |
1958 | || (type->u.u.size == 8 | |
1959 | && f->type->kind == TDESC_TYPE_UINT64)) | |
1960 | { | |
1961 | printf_unfiltered | |
1962 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", | |
1963 | f->name, f->start, f->end); | |
1964 | } | |
1965 | else | |
1966 | { | |
1967 | printf_unfiltered | |
1968 | (" field_type = tdesc_named_type (feature," | |
1969 | " \"%s\");\n", | |
1970 | type_name); | |
1971 | printf_unfiltered | |
1972 | (" tdesc_add_typed_bitfield (type, \"%s\"," | |
1973 | " %d, %d, field_type);\n", | |
1974 | f->name, f->start, f->end); | |
1975 | } | |
1976 | } | |
1977 | else /* Not a bitfield. */ | |
1978 | { | |
1979 | gdb_assert (f->end == -1); | |
1980 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
1981 | printf_unfiltered | |
1982 | (" field_type = tdesc_named_type (feature," | |
1983 | " \"%s\");\n", | |
1984 | type_name); | |
1985 | printf_unfiltered | |
1986 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
1987 | f->name); | |
1988 | } | |
1989 | } | |
1990 | break; | |
1991 | case TDESC_TYPE_UNION: | |
1992 | printf_unfiltered | |
1993 | (" type = tdesc_create_union (feature, \"%s\");\n", | |
1994 | type->name); | |
1995 | for (int ix3 = 0; | |
1996 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1997 | ix3++) | |
1998 | { | |
1999 | printf_unfiltered | |
2000 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
2001 | f->type->name); | |
2002 | printf_unfiltered | |
2003 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
2004 | f->name); | |
2005 | } | |
2006 | break; | |
2007 | case TDESC_TYPE_ENUM: | |
2008 | printf_unfiltered | |
2009 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", | |
2010 | type->name, type->u.u.size); | |
2011 | for (int ix3 = 0; | |
2012 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
2013 | ix3++) | |
2014 | printf_unfiltered | |
2015 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", | |
2016 | f->start, f->name); | |
2017 | break; | |
2018 | default: | |
2019 | error (_("C output is not supported type \"%s\"."), type->name); | |
2020 | } | |
2021 | printf_unfiltered ("\n"); | |
2022 | } | |
2023 | ||
2024 | void visit (const tdesc_reg *reg) override | |
2025 | { | |
2026 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
2027 | reg->name, reg->target_regnum, reg->save_restore); | |
2028 | if (reg->group) | |
2029 | printf_unfiltered ("\"%s\", ", reg->group); | |
2030 | else | |
2031 | printf_unfiltered ("NULL, "); | |
2032 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
2033 | } | |
2034 | ||
2035 | private: | |
2036 | char *m_function; | |
2037 | std::string m_filename_after_features; | |
2038 | bool m_printed_field_type = false; | |
2039 | bool m_printed_type = false; | |
2040 | }; | |
2041 | ||
81adfced DJ |
2042 | static void |
2043 | maint_print_c_tdesc_cmd (char *args, int from_tty) | |
2044 | { | |
2045 | const struct target_desc *tdesc; | |
6eb1e6a8 | 2046 | const char *filename; |
81adfced | 2047 | |
8e2141c6 YQ |
2048 | if (args == NULL) |
2049 | { | |
2050 | /* Use the global target-supplied description, not the current | |
2051 | architecture's. This lets a GDB for one architecture generate C | |
2052 | for another architecture's description, even though the gdbarch | |
2053 | initialization code will reject the new description. */ | |
2054 | tdesc = current_target_desc; | |
2055 | filename = target_description_filename; | |
2056 | } | |
2057 | else | |
2058 | { | |
2059 | /* Use the target description from the XML file. */ | |
2060 | filename = args; | |
2061 | tdesc = file_read_description_xml (filename); | |
2062 | } | |
2063 | ||
81adfced DJ |
2064 | if (tdesc == NULL) |
2065 | error (_("There is no target description to print.")); | |
2066 | ||
8e2141c6 | 2067 | if (filename == NULL) |
81adfced DJ |
2068 | error (_("The current target description did not come from an XML file.")); |
2069 | ||
6eb1e6a8 YQ |
2070 | std::string filename_after_features (filename); |
2071 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 2072 | |
6eb1e6a8 YQ |
2073 | if (loc != std::string::npos) |
2074 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 2075 | |
6eb1e6a8 | 2076 | print_c_tdesc v (filename_after_features); |
81adfced | 2077 | |
6eb1e6a8 | 2078 | tdesc->accept (v); |
81adfced DJ |
2079 | } |
2080 | ||
2c0b251b PA |
2081 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
2082 | extern initialize_file_ftype _initialize_target_descriptions; | |
2083 | ||
23181151 DJ |
2084 | void |
2085 | _initialize_target_descriptions (void) | |
2086 | { | |
123dc839 DJ |
2087 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
2088 | ||
23181151 DJ |
2089 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
2090 | Set target description specific variables."), | |
2091 | &tdesc_set_cmdlist, "set tdesc ", | |
2092 | 0 /* allow-unknown */, &setlist); | |
2093 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
2094 | Show target description specific variables."), | |
2095 | &tdesc_show_cmdlist, "show tdesc ", | |
2096 | 0 /* allow-unknown */, &showlist); | |
2097 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2098 | Unset target description specific variables."), | |
2099 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2100 | 0 /* allow-unknown */, &unsetlist); | |
2101 | ||
2102 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2103 | &tdesc_filename_cmd_string, |
23181151 DJ |
2104 | _("\ |
2105 | Set the file to read for an XML target description"), _("\ | |
2106 | Show the file to read for an XML target description"), _("\ | |
2107 | When set, GDB will read the target description from a local\n\ | |
2108 | file instead of querying the remote target."), | |
2109 | set_tdesc_filename_cmd, | |
2110 | show_tdesc_filename_cmd, | |
2111 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2112 | ||
2113 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2114 | Unset the file to read for an XML target description. When unset,\n\ | |
2115 | GDB will read the description from the target."), | |
2116 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2117 | |
2118 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2119 | Print the current target description as a C source file."), | |
2120 | &maintenanceprintlist); | |
23181151 | 2121 | } |