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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 DJ |
37 | |
38 | /* Types. */ | |
39 | ||
29709017 DJ |
40 | typedef struct property |
41 | { | |
23181151 DJ |
42 | char *key; |
43 | char *value; | |
29709017 DJ |
44 | } property_s; |
45 | DEF_VEC_O(property_s); | |
46 | ||
123dc839 DJ |
47 | /* An individual register from a target description. */ |
48 | ||
49 | typedef struct tdesc_reg | |
50 | { | |
72ddacb7 YQ |
51 | tdesc_reg (struct tdesc_feature *feature, const char *name_, |
52 | int regnum, int save_restore_, const char *group_, | |
53 | int bitsize_, const char *type_) | |
54 | : name (xstrdup (name_)), target_regnum (regnum), | |
55 | save_restore (save_restore_), | |
56 | group (group_ != NULL ? xstrdup (group_) : NULL), | |
57 | bitsize (bitsize_), | |
58 | type (type_ != NULL ? xstrdup (type_) : xstrdup ("<unknown>")) | |
59 | { | |
60 | /* If the register's type is target-defined, look it up now. We may not | |
61 | have easy access to the containing feature when we want it later. */ | |
62 | tdesc_type = tdesc_named_type (feature, type); | |
63 | } | |
64 | ||
65 | ~tdesc_reg () | |
66 | { | |
67 | xfree (name); | |
68 | xfree (type); | |
69 | xfree (group); | |
70 | } | |
71 | ||
72 | /* Disable copying. */ | |
73 | tdesc_reg (const tdesc_reg &) = delete; | |
74 | tdesc_reg &operator= (const tdesc_reg &) = delete; | |
75 | ||
123dc839 DJ |
76 | /* The name of this register. In standard features, it may be |
77 | recognized by the architecture support code, or it may be purely | |
78 | for the user. */ | |
79 | char *name; | |
80 | ||
81 | /* The register number used by this target to refer to this | |
82 | register. This is used for remote p/P packets and to determine | |
83 | the ordering of registers in the remote g/G packets. */ | |
84 | long target_regnum; | |
85 | ||
86 | /* If this flag is set, GDB should save and restore this register | |
87 | around calls to an inferior function. */ | |
88 | int save_restore; | |
89 | ||
90 | /* The name of the register group containing this register, or NULL | |
91 | if the group should be automatically determined from the | |
92 | register's type. If this is "general", "float", or "vector", the | |
93 | corresponding "info" command should display this register's | |
94 | value. It can be an arbitrary string, but should be limited to | |
95 | alphanumeric characters and internal hyphens. Currently other | |
96 | strings are ignored (treated as NULL). */ | |
97 | char *group; | |
98 | ||
99 | /* The size of the register, in bits. */ | |
100 | int bitsize; | |
101 | ||
102 | /* The type of the register. This string corresponds to either | |
103 | a named type from the target description or a predefined | |
104 | type from GDB. */ | |
105 | char *type; | |
106 | ||
107 | /* The target-described type corresponding to TYPE, if found. */ | |
ad068eab | 108 | struct tdesc_type *tdesc_type; |
123dc839 DJ |
109 | } *tdesc_reg_p; |
110 | DEF_VEC_P(tdesc_reg_p); | |
111 | ||
112 | /* A named type from a target description. */ | |
ad068eab UW |
113 | |
114 | typedef struct tdesc_type_field | |
115 | { | |
116 | char *name; | |
117 | struct tdesc_type *type; | |
81516450 DE |
118 | /* For non-enum-values, either both are -1 (non-bitfield), or both are |
119 | not -1 (bitfield). For enum values, start is the value (which could be | |
120 | -1), end is -1. */ | |
f5dff777 | 121 | int start, end; |
ad068eab UW |
122 | } tdesc_type_field; |
123 | DEF_VEC_O(tdesc_type_field); | |
124 | ||
52059ffd TT |
125 | enum tdesc_type_kind |
126 | { | |
127 | /* Predefined types. */ | |
81516450 | 128 | TDESC_TYPE_BOOL, |
52059ffd TT |
129 | TDESC_TYPE_INT8, |
130 | TDESC_TYPE_INT16, | |
131 | TDESC_TYPE_INT32, | |
132 | TDESC_TYPE_INT64, | |
133 | TDESC_TYPE_INT128, | |
134 | TDESC_TYPE_UINT8, | |
135 | TDESC_TYPE_UINT16, | |
136 | TDESC_TYPE_UINT32, | |
137 | TDESC_TYPE_UINT64, | |
138 | TDESC_TYPE_UINT128, | |
139 | TDESC_TYPE_CODE_PTR, | |
140 | TDESC_TYPE_DATA_PTR, | |
141 | TDESC_TYPE_IEEE_SINGLE, | |
142 | TDESC_TYPE_IEEE_DOUBLE, | |
143 | TDESC_TYPE_ARM_FPA_EXT, | |
144 | TDESC_TYPE_I387_EXT, | |
145 | ||
146 | /* Types defined by a target feature. */ | |
147 | TDESC_TYPE_VECTOR, | |
148 | TDESC_TYPE_STRUCT, | |
149 | TDESC_TYPE_UNION, | |
81516450 DE |
150 | TDESC_TYPE_FLAGS, |
151 | TDESC_TYPE_ENUM | |
52059ffd TT |
152 | }; |
153 | ||
ad068eab UW |
154 | typedef struct tdesc_type |
155 | { | |
72ddacb7 YQ |
156 | tdesc_type (const char *name_, enum tdesc_type_kind kind_) |
157 | : name (xstrdup (name_)), kind (kind_) | |
158 | { | |
159 | memset (&u, 0, sizeof (u)); | |
160 | } | |
161 | ||
162 | ~tdesc_type () | |
163 | { | |
164 | switch (kind) | |
165 | { | |
166 | case TDESC_TYPE_STRUCT: | |
167 | case TDESC_TYPE_UNION: | |
168 | case TDESC_TYPE_FLAGS: | |
169 | case TDESC_TYPE_ENUM: | |
170 | { | |
171 | struct tdesc_type_field *f; | |
172 | int ix; | |
173 | ||
174 | for (ix = 0; | |
175 | VEC_iterate (tdesc_type_field, u.u.fields, ix, f); | |
176 | ix++) | |
177 | xfree (f->name); | |
178 | ||
179 | VEC_free (tdesc_type_field, u.u.fields); | |
180 | } | |
181 | break; | |
182 | ||
183 | default: | |
184 | break; | |
185 | } | |
186 | xfree ((char *) name); | |
187 | } | |
188 | /* Disable copying. */ | |
189 | tdesc_type (const tdesc_type &) = delete; | |
190 | tdesc_type &operator= (const tdesc_type &) = delete; | |
191 | ||
a121b7c1 PA |
192 | /* The name of this type. If this type is a built-in type, this is |
193 | a pointer to a constant string. Otherwise, it's a | |
194 | malloc-allocated string (and thus must be freed). */ | |
195 | const char *name; | |
ad068eab UW |
196 | |
197 | /* Identify the kind of this type. */ | |
52059ffd | 198 | enum tdesc_type_kind kind; |
ad068eab UW |
199 | |
200 | /* Kind-specific data. */ | |
201 | union | |
202 | { | |
203 | /* Vector type. */ | |
204 | struct | |
205 | { | |
206 | struct tdesc_type *type; | |
207 | int count; | |
208 | } v; | |
209 | ||
81516450 | 210 | /* Struct, union, flags, or enum type. */ |
ad068eab UW |
211 | struct |
212 | { | |
213 | VEC(tdesc_type_field) *fields; | |
54157a25 | 214 | int size; |
ad068eab UW |
215 | } u; |
216 | } u; | |
217 | } *tdesc_type_p; | |
218 | DEF_VEC_P(tdesc_type_p); | |
123dc839 DJ |
219 | |
220 | /* A feature from a target description. Each feature is a collection | |
221 | of other elements, e.g. registers and types. */ | |
222 | ||
223 | typedef struct tdesc_feature | |
224 | { | |
72ddacb7 YQ |
225 | tdesc_feature (const char *name_) |
226 | : name (xstrdup (name_)) | |
227 | {} | |
228 | ||
229 | ~tdesc_feature () | |
230 | { | |
231 | struct tdesc_reg *reg; | |
232 | struct tdesc_type *type; | |
233 | int ix; | |
234 | ||
235 | for (ix = 0; VEC_iterate (tdesc_reg_p, registers, ix, reg); ix++) | |
236 | delete reg; | |
237 | VEC_free (tdesc_reg_p, registers); | |
238 | ||
239 | for (ix = 0; VEC_iterate (tdesc_type_p, types, ix, type); ix++) | |
240 | delete type; | |
241 | VEC_free (tdesc_type_p, types); | |
242 | ||
243 | xfree (name); | |
244 | } | |
245 | ||
246 | /* Disable copying. */ | |
247 | tdesc_feature (const tdesc_feature &) = delete; | |
248 | tdesc_feature &operator= (const tdesc_feature &) = delete; | |
249 | ||
123dc839 DJ |
250 | /* The name of this feature. It may be recognized by the architecture |
251 | support code. */ | |
252 | char *name; | |
253 | ||
254 | /* The registers associated with this feature. */ | |
72ddacb7 | 255 | VEC(tdesc_reg_p) *registers = NULL; |
123dc839 DJ |
256 | |
257 | /* The types associated with this feature. */ | |
72ddacb7 | 258 | VEC(tdesc_type_p) *types = NULL; |
123dc839 DJ |
259 | } *tdesc_feature_p; |
260 | DEF_VEC_P(tdesc_feature_p); | |
261 | ||
e35359c5 UW |
262 | /* A compatible architecture from a target description. */ |
263 | typedef const struct bfd_arch_info *arch_p; | |
264 | DEF_VEC_P(arch_p); | |
265 | ||
123dc839 DJ |
266 | /* A target description. */ |
267 | ||
424163ea DJ |
268 | struct target_desc |
269 | { | |
b468ff4c YQ |
270 | target_desc () |
271 | {} | |
272 | ||
273 | ~target_desc () | |
274 | { | |
275 | struct tdesc_feature *feature; | |
276 | struct property *prop; | |
277 | int ix; | |
278 | ||
279 | for (ix = 0; | |
280 | VEC_iterate (tdesc_feature_p, features, ix, feature); | |
281 | ix++) | |
282 | delete feature; | |
283 | VEC_free (tdesc_feature_p, features); | |
284 | ||
285 | for (ix = 0; | |
286 | VEC_iterate (property_s, properties, ix, prop); | |
287 | ix++) | |
288 | { | |
289 | xfree (prop->key); | |
290 | xfree (prop->value); | |
291 | } | |
292 | ||
293 | VEC_free (property_s, properties); | |
294 | VEC_free (arch_p, compatible); | |
295 | } | |
296 | ||
297 | target_desc (const target_desc &) = delete; | |
298 | void operator= (const target_desc &) = delete; | |
299 | ||
23181151 | 300 | /* The architecture reported by the target, if any. */ |
b468ff4c | 301 | const struct bfd_arch_info *arch = NULL; |
23181151 | 302 | |
08d16641 PA |
303 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
304 | otherwise. */ | |
b468ff4c | 305 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 306 | |
e35359c5 | 307 | /* The list of compatible architectures reported by the target. */ |
b468ff4c | 308 | VEC(arch_p) *compatible = NULL; |
e35359c5 | 309 | |
29709017 | 310 | /* Any architecture-specific properties specified by the target. */ |
b468ff4c | 311 | VEC(property_s) *properties = NULL; |
123dc839 DJ |
312 | |
313 | /* The features associated with this target. */ | |
b468ff4c | 314 | VEC(tdesc_feature_p) *features = NULL; |
123dc839 DJ |
315 | }; |
316 | ||
317 | /* Per-architecture data associated with a target description. The | |
318 | target description may be shared by multiple architectures, but | |
319 | this data is private to one gdbarch. */ | |
320 | ||
ad068eab UW |
321 | typedef struct tdesc_arch_reg |
322 | { | |
323 | struct tdesc_reg *reg; | |
324 | struct type *type; | |
325 | } tdesc_arch_reg; | |
326 | DEF_VEC_O(tdesc_arch_reg); | |
327 | ||
123dc839 DJ |
328 | struct tdesc_arch_data |
329 | { | |
ad068eab | 330 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
331 | During initialization of the gdbarch this list is used to store |
332 | registers which the architecture assigns a fixed register number. | |
333 | Registers which are NULL in this array, or off the end, are | |
334 | treated as zero-sized and nameless (i.e. placeholders in the | |
335 | numbering). */ | |
ad068eab | 336 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
337 | |
338 | /* Functions which report the register name, type, and reggroups for | |
339 | pseudo-registers. */ | |
340 | gdbarch_register_name_ftype *pseudo_register_name; | |
341 | gdbarch_register_type_ftype *pseudo_register_type; | |
342 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
343 | }; |
344 | ||
6ecd4729 PA |
345 | /* Info about an inferior's target description. There's one of these |
346 | for each inferior. */ | |
424163ea | 347 | |
6ecd4729 PA |
348 | struct target_desc_info |
349 | { | |
350 | /* A flag indicating that a description has already been fetched | |
351 | from the target, so it should not be queried again. */ | |
352 | ||
353 | int fetched; | |
424163ea | 354 | |
6ecd4729 PA |
355 | /* The description fetched from the target, or NULL if the target |
356 | did not supply any description. Only valid when | |
357 | target_desc_fetched is set. Only the description initialization | |
358 | code should access this; normally, the description should be | |
359 | accessed through the gdbarch object. */ | |
424163ea | 360 | |
6ecd4729 | 361 | const struct target_desc *tdesc; |
424163ea | 362 | |
6ecd4729 PA |
363 | /* The filename to read a target description from, as set by "set |
364 | tdesc filename ..." */ | |
424163ea | 365 | |
6ecd4729 PA |
366 | char *filename; |
367 | }; | |
23181151 | 368 | |
6ecd4729 PA |
369 | /* Get the inferior INF's target description info, allocating one on |
370 | the stop if necessary. */ | |
23181151 | 371 | |
6ecd4729 PA |
372 | static struct target_desc_info * |
373 | get_tdesc_info (struct inferior *inf) | |
374 | { | |
375 | if (inf->tdesc_info == NULL) | |
376 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
377 | return inf->tdesc_info; | |
378 | } | |
23181151 | 379 | |
123dc839 DJ |
380 | /* A handle for architecture-specific data associated with the |
381 | target description (see struct tdesc_arch_data). */ | |
382 | ||
383 | static struct gdbarch_data *tdesc_data; | |
384 | ||
6ecd4729 PA |
385 | /* See target-descriptions.h. */ |
386 | ||
387 | int | |
388 | target_desc_info_from_user_p (struct target_desc_info *info) | |
389 | { | |
390 | return info != NULL && info->filename != NULL; | |
391 | } | |
392 | ||
393 | /* See target-descriptions.h. */ | |
394 | ||
395 | void | |
396 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
397 | { | |
398 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
399 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
400 | ||
401 | dest->fetched = src->fetched; | |
402 | dest->tdesc = src->tdesc; | |
403 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
404 | } | |
405 | ||
406 | /* See target-descriptions.h. */ | |
407 | ||
408 | void | |
409 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
410 | { | |
411 | if (tdesc_info != NULL) | |
412 | { | |
413 | xfree (tdesc_info->filename); | |
414 | xfree (tdesc_info); | |
415 | } | |
416 | } | |
417 | ||
418 | /* Convenience helper macros. */ | |
419 | ||
420 | #define target_desc_fetched \ | |
421 | get_tdesc_info (current_inferior ())->fetched | |
422 | #define current_target_desc \ | |
423 | get_tdesc_info (current_inferior ())->tdesc | |
424 | #define target_description_filename \ | |
425 | get_tdesc_info (current_inferior ())->filename | |
426 | ||
427 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
428 | ||
429 | static char *tdesc_filename_cmd_string; | |
430 | ||
424163ea DJ |
431 | /* Fetch the current target's description, and switch the current |
432 | architecture to one which incorporates that description. */ | |
433 | ||
434 | void | |
435 | target_find_description (void) | |
436 | { | |
437 | /* If we've already fetched a description from the target, don't do | |
438 | it again. This allows a target to fetch the description early, | |
439 | during its to_open or to_create_inferior, if it needs extra | |
440 | information about the target to initialize. */ | |
441 | if (target_desc_fetched) | |
442 | return; | |
443 | ||
444 | /* The current architecture should not have any target description | |
445 | specified. It should have been cleared, e.g. when we | |
446 | disconnected from the previous target. */ | |
f5656ead | 447 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 448 | |
23181151 DJ |
449 | /* First try to fetch an XML description from the user-specified |
450 | file. */ | |
451 | current_target_desc = NULL; | |
452 | if (target_description_filename != NULL | |
453 | && *target_description_filename != '\0') | |
454 | current_target_desc | |
455 | = file_read_description_xml (target_description_filename); | |
456 | ||
457 | /* Next try to read the description from the current target using | |
458 | target objects. */ | |
459 | if (current_target_desc == NULL) | |
460 | current_target_desc = target_read_description_xml (¤t_target); | |
461 | ||
462 | /* If that failed try a target-specific hook. */ | |
463 | if (current_target_desc == NULL) | |
464 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
465 | |
466 | /* If a non-NULL description was returned, then update the current | |
467 | architecture. */ | |
468 | if (current_target_desc) | |
469 | { | |
470 | struct gdbarch_info info; | |
471 | ||
472 | gdbarch_info_init (&info); | |
473 | info.target_desc = current_target_desc; | |
474 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
475 | warning (_("Architecture rejected target-supplied description")); |
476 | else | |
477 | { | |
478 | struct tdesc_arch_data *data; | |
479 | ||
19ba03f4 SM |
480 | data = ((struct tdesc_arch_data *) |
481 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 482 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 483 | && data->arch_regs == NULL) |
123dc839 DJ |
484 | warning (_("Target-supplied registers are not supported " |
485 | "by the current architecture")); | |
486 | } | |
424163ea DJ |
487 | } |
488 | ||
489 | /* Now that we know this description is usable, record that we | |
490 | fetched it. */ | |
491 | target_desc_fetched = 1; | |
492 | } | |
493 | ||
494 | /* Discard any description fetched from the current target, and switch | |
495 | the current architecture to one with no target description. */ | |
496 | ||
497 | void | |
498 | target_clear_description (void) | |
499 | { | |
500 | struct gdbarch_info info; | |
501 | ||
502 | if (!target_desc_fetched) | |
503 | return; | |
504 | ||
505 | target_desc_fetched = 0; | |
506 | current_target_desc = NULL; | |
507 | ||
508 | gdbarch_info_init (&info); | |
509 | if (!gdbarch_update_p (info)) | |
510 | internal_error (__FILE__, __LINE__, | |
511 | _("Could not remove target-supplied description")); | |
512 | } | |
513 | ||
514 | /* Return the global current target description. This should only be | |
515 | used by gdbarch initialization code; most access should be through | |
516 | an existing gdbarch. */ | |
517 | ||
518 | const struct target_desc * | |
519 | target_current_description (void) | |
520 | { | |
521 | if (target_desc_fetched) | |
522 | return current_target_desc; | |
523 | ||
524 | return NULL; | |
525 | } | |
e35359c5 UW |
526 | |
527 | /* Return non-zero if this target description is compatible | |
528 | with the given BFD architecture. */ | |
529 | ||
530 | int | |
531 | tdesc_compatible_p (const struct target_desc *target_desc, | |
532 | const struct bfd_arch_info *arch) | |
533 | { | |
534 | const struct bfd_arch_info *compat; | |
535 | int ix; | |
536 | ||
537 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
538 | ix++) | |
539 | { | |
540 | if (compat == arch | |
541 | || arch->compatible (arch, compat) | |
542 | || compat->compatible (compat, arch)) | |
543 | return 1; | |
544 | } | |
545 | ||
546 | return 0; | |
547 | } | |
23181151 DJ |
548 | \f |
549 | ||
123dc839 | 550 | /* Direct accessors for target descriptions. */ |
424163ea | 551 | |
29709017 DJ |
552 | /* Return the string value of a property named KEY, or NULL if the |
553 | property was not specified. */ | |
554 | ||
555 | const char * | |
556 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
557 | { | |
558 | struct property *prop; | |
559 | int ix; | |
560 | ||
561 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
562 | ix++) | |
563 | if (strcmp (prop->key, key) == 0) | |
564 | return prop->value; | |
565 | ||
566 | return NULL; | |
567 | } | |
568 | ||
23181151 DJ |
569 | /* Return the BFD architecture associated with this target |
570 | description, or NULL if no architecture was specified. */ | |
571 | ||
572 | const struct bfd_arch_info * | |
573 | tdesc_architecture (const struct target_desc *target_desc) | |
574 | { | |
575 | return target_desc->arch; | |
576 | } | |
08d16641 PA |
577 | |
578 | /* Return the OSABI associated with this target description, or | |
579 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
580 | ||
581 | enum gdb_osabi | |
582 | tdesc_osabi (const struct target_desc *target_desc) | |
583 | { | |
584 | return target_desc->osabi; | |
585 | } | |
586 | ||
23181151 DJ |
587 | \f |
588 | ||
123dc839 DJ |
589 | /* Return 1 if this target description includes any registers. */ |
590 | ||
591 | int | |
592 | tdesc_has_registers (const struct target_desc *target_desc) | |
593 | { | |
594 | int ix; | |
595 | struct tdesc_feature *feature; | |
596 | ||
597 | if (target_desc == NULL) | |
598 | return 0; | |
599 | ||
600 | for (ix = 0; | |
601 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
602 | ix++) | |
603 | if (! VEC_empty (tdesc_reg_p, feature->registers)) | |
604 | return 1; | |
605 | ||
606 | return 0; | |
607 | } | |
608 | ||
609 | /* Return the feature with the given name, if present, or NULL if | |
610 | the named feature is not found. */ | |
611 | ||
612 | const struct tdesc_feature * | |
613 | tdesc_find_feature (const struct target_desc *target_desc, | |
614 | const char *name) | |
615 | { | |
616 | int ix; | |
617 | struct tdesc_feature *feature; | |
618 | ||
619 | for (ix = 0; | |
620 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
621 | ix++) | |
622 | if (strcmp (feature->name, name) == 0) | |
623 | return feature; | |
624 | ||
625 | return NULL; | |
626 | } | |
627 | ||
628 | /* Return the name of FEATURE. */ | |
629 | ||
630 | const char * | |
631 | tdesc_feature_name (const struct tdesc_feature *feature) | |
632 | { | |
633 | return feature->name; | |
634 | } | |
635 | ||
ad068eab UW |
636 | /* Predefined types. */ |
637 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 638 | { |
81516450 | 639 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
640 | { "int8", TDESC_TYPE_INT8 }, |
641 | { "int16", TDESC_TYPE_INT16 }, | |
642 | { "int32", TDESC_TYPE_INT32 }, | |
643 | { "int64", TDESC_TYPE_INT64 }, | |
644 | { "int128", TDESC_TYPE_INT128 }, | |
645 | { "uint8", TDESC_TYPE_UINT8 }, | |
646 | { "uint16", TDESC_TYPE_UINT16 }, | |
647 | { "uint32", TDESC_TYPE_UINT32 }, | |
648 | { "uint64", TDESC_TYPE_UINT64 }, | |
649 | { "uint128", TDESC_TYPE_UINT128 }, | |
650 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
651 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
652 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
653 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 654 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 655 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 656 | }; |
81adfced | 657 | |
81516450 DE |
658 | /* Lookup a predefined type. */ |
659 | ||
660 | static struct tdesc_type * | |
661 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
662 | { | |
663 | int ix; | |
664 | struct tdesc_type *type; | |
665 | ||
666 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
667 | if (tdesc_predefined_types[ix].kind == kind) | |
668 | return &tdesc_predefined_types[ix]; | |
669 | ||
670 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
671 | } | |
672 | ||
123dc839 DJ |
673 | /* Return the type associated with ID in the context of FEATURE, or |
674 | NULL if none. */ | |
675 | ||
ad068eab | 676 | struct tdesc_type * |
123dc839 DJ |
677 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
678 | { | |
679 | int ix; | |
ad068eab | 680 | struct tdesc_type *type; |
123dc839 DJ |
681 | |
682 | /* First try target-defined types. */ | |
ad068eab UW |
683 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
684 | if (strcmp (type->name, id) == 0) | |
685 | return type; | |
123dc839 | 686 | |
81adfced DJ |
687 | /* Next try the predefined types. */ |
688 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
689 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 690 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
691 | |
692 | return NULL; | |
693 | } | |
ad068eab | 694 | |
9fd3625f L |
695 | /* Lookup type associated with ID. */ |
696 | ||
697 | struct type * | |
698 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
699 | { | |
700 | struct tdesc_arch_reg *reg; | |
701 | struct tdesc_arch_data *data; | |
702 | int i, num_regs; | |
703 | ||
19ba03f4 | 704 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
9fd3625f L |
705 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); |
706 | for (i = 0; i < num_regs; i++) | |
707 | { | |
708 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); | |
709 | if (reg->reg | |
710 | && reg->reg->tdesc_type | |
711 | && reg->type | |
712 | && strcmp (id, reg->reg->tdesc_type->name) == 0) | |
713 | return reg->type; | |
714 | } | |
715 | ||
716 | return NULL; | |
717 | } | |
718 | ||
ad068eab UW |
719 | /* Construct, if necessary, and return the GDB type implementing target |
720 | type TDESC_TYPE for architecture GDBARCH. */ | |
721 | ||
722 | static struct type * | |
723 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
724 | { | |
9fd3625f L |
725 | struct type *type; |
726 | ||
ad068eab UW |
727 | switch (tdesc_type->kind) |
728 | { | |
729 | /* Predefined types. */ | |
81516450 DE |
730 | case TDESC_TYPE_BOOL: |
731 | return builtin_type (gdbarch)->builtin_bool; | |
732 | ||
ad068eab | 733 | case TDESC_TYPE_INT8: |
df4df182 | 734 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
735 | |
736 | case TDESC_TYPE_INT16: | |
df4df182 | 737 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
738 | |
739 | case TDESC_TYPE_INT32: | |
df4df182 | 740 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
741 | |
742 | case TDESC_TYPE_INT64: | |
df4df182 | 743 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
744 | |
745 | case TDESC_TYPE_INT128: | |
df4df182 | 746 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
747 | |
748 | case TDESC_TYPE_UINT8: | |
df4df182 | 749 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
750 | |
751 | case TDESC_TYPE_UINT16: | |
df4df182 | 752 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
753 | |
754 | case TDESC_TYPE_UINT32: | |
df4df182 | 755 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
756 | |
757 | case TDESC_TYPE_UINT64: | |
df4df182 | 758 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
759 | |
760 | case TDESC_TYPE_UINT128: | |
df4df182 | 761 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
762 | |
763 | case TDESC_TYPE_CODE_PTR: | |
764 | return builtin_type (gdbarch)->builtin_func_ptr; | |
765 | ||
766 | case TDESC_TYPE_DATA_PTR: | |
767 | return builtin_type (gdbarch)->builtin_data_ptr; | |
768 | ||
9fd3625f L |
769 | default: |
770 | break; | |
771 | } | |
772 | ||
773 | type = tdesc_find_type (gdbarch, tdesc_type->name); | |
774 | if (type) | |
775 | return type; | |
776 | ||
777 | switch (tdesc_type->kind) | |
778 | { | |
ad068eab | 779 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 780 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 781 | floatformats_ieee_single); |
ad068eab UW |
782 | |
783 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 784 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 785 | floatformats_ieee_double); |
ad068eab UW |
786 | |
787 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 788 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 789 | floatformats_arm_ext); |
ad068eab | 790 | |
9fd3625f L |
791 | case TDESC_TYPE_I387_EXT: |
792 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
793 | floatformats_i387_ext); | |
794 | ||
ad068eab UW |
795 | /* Types defined by a target feature. */ |
796 | case TDESC_TYPE_VECTOR: | |
797 | { | |
798 | struct type *type, *field_type; | |
799 | ||
800 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
801 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
802 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
803 | ||
804 | return type; | |
805 | } | |
806 | ||
f5dff777 DJ |
807 | case TDESC_TYPE_STRUCT: |
808 | { | |
809 | struct type *type, *field_type; | |
810 | struct tdesc_type_field *f; | |
811 | int ix; | |
812 | ||
813 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); | |
814 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
815 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
816 | ||
817 | for (ix = 0; | |
818 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
819 | ix++) | |
820 | { | |
81516450 | 821 | if (f->start != -1 && f->end != -1) |
f5dff777 DJ |
822 | { |
823 | /* Bitfield. */ | |
824 | struct field *fld; | |
825 | struct type *field_type; | |
826 | int bitsize, total_size; | |
827 | ||
81516450 | 828 | /* This invariant should be preserved while creating types. */ |
f5dff777 | 829 | gdb_assert (tdesc_type->u.u.size != 0); |
81516450 DE |
830 | if (f->type != NULL) |
831 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
832 | else if (tdesc_type->u.u.size > 4) | |
f5dff777 DJ |
833 | field_type = builtin_type (gdbarch)->builtin_uint64; |
834 | else | |
835 | field_type = builtin_type (gdbarch)->builtin_uint32; | |
836 | ||
837 | fld = append_composite_type_field_raw (type, xstrdup (f->name), | |
838 | field_type); | |
839 | ||
840 | /* For little-endian, BITPOS counts from the LSB of | |
841 | the structure and marks the LSB of the field. For | |
842 | big-endian, BITPOS counts from the MSB of the | |
843 | structure and marks the MSB of the field. Either | |
844 | way, it is the number of bits to the "left" of the | |
845 | field. To calculate this in big-endian, we need | |
846 | the total size of the structure. */ | |
847 | bitsize = f->end - f->start + 1; | |
848 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; | |
849 | if (gdbarch_bits_big_endian (gdbarch)) | |
f41f5e61 | 850 | SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize); |
f5dff777 | 851 | else |
f41f5e61 | 852 | SET_FIELD_BITPOS (fld[0], f->start); |
f5dff777 DJ |
853 | FIELD_BITSIZE (fld[0]) = bitsize; |
854 | } | |
855 | else | |
856 | { | |
81516450 | 857 | gdb_assert (f->start == -1 && f->end == -1); |
f5dff777 DJ |
858 | field_type = tdesc_gdb_type (gdbarch, f->type); |
859 | append_composite_type_field (type, xstrdup (f->name), | |
860 | field_type); | |
861 | } | |
862 | } | |
863 | ||
864 | if (tdesc_type->u.u.size != 0) | |
865 | TYPE_LENGTH (type) = tdesc_type->u.u.size; | |
866 | return type; | |
867 | } | |
868 | ||
ad068eab UW |
869 | case TDESC_TYPE_UNION: |
870 | { | |
871 | struct type *type, *field_type; | |
872 | struct tdesc_type_field *f; | |
873 | int ix; | |
874 | ||
e9bb382b | 875 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
ad068eab UW |
876 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
877 | ||
878 | for (ix = 0; | |
879 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
880 | ix++) | |
881 | { | |
882 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
883 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
884 | ||
f5dff777 | 885 | /* If any of the children of a union are vectors, flag the |
ad068eab UW |
886 | union as a vector also. This allows e.g. a union of two |
887 | vector types to show up automatically in "info vector". */ | |
888 | if (TYPE_VECTOR (field_type)) | |
889 | TYPE_VECTOR (type) = 1; | |
890 | } | |
f5dff777 DJ |
891 | return type; |
892 | } | |
893 | ||
894 | case TDESC_TYPE_FLAGS: | |
895 | { | |
81516450 | 896 | struct tdesc_type_field *f; |
f5dff777 DJ |
897 | int ix; |
898 | ||
3494b66d | 899 | type = arch_flags_type (gdbarch, tdesc_type->name, |
81516450 DE |
900 | tdesc_type->u.u.size); |
901 | for (ix = 0; | |
902 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
903 | ix++) | |
904 | { | |
905 | struct type *field_type; | |
906 | int bitsize = f->end - f->start + 1; | |
907 | ||
908 | gdb_assert (f->type != NULL); | |
909 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
910 | append_flags_type_field (type, f->start, bitsize, | |
911 | field_type, f->name); | |
912 | } | |
913 | ||
914 | return type; | |
915 | } | |
916 | ||
917 | case TDESC_TYPE_ENUM: | |
918 | { | |
919 | struct tdesc_type_field *f; | |
920 | int ix; | |
921 | ||
922 | type = arch_type (gdbarch, TYPE_CODE_ENUM, | |
923 | tdesc_type->u.u.size, tdesc_type->name); | |
924 | TYPE_UNSIGNED (type) = 1; | |
f5dff777 | 925 | for (ix = 0; |
81516450 | 926 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
f5dff777 | 927 | ix++) |
81516450 DE |
928 | { |
929 | struct field *fld | |
930 | = append_composite_type_field_raw (type, xstrdup (f->name), | |
931 | NULL); | |
932 | ||
933 | SET_FIELD_BITPOS (fld[0], f->start); | |
934 | } | |
ad068eab UW |
935 | |
936 | return type; | |
937 | } | |
938 | } | |
939 | ||
940 | internal_error (__FILE__, __LINE__, | |
941 | "Type \"%s\" has an unknown kind %d", | |
942 | tdesc_type->name, tdesc_type->kind); | |
943 | } | |
123dc839 DJ |
944 | \f |
945 | ||
946 | /* Support for registers from target descriptions. */ | |
947 | ||
948 | /* Construct the per-gdbarch data. */ | |
949 | ||
950 | static void * | |
951 | tdesc_data_init (struct obstack *obstack) | |
952 | { | |
953 | struct tdesc_arch_data *data; | |
954 | ||
955 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
956 | return data; | |
957 | } | |
958 | ||
959 | /* Similar, but for the temporary copy used during architecture | |
960 | initialization. */ | |
961 | ||
962 | struct tdesc_arch_data * | |
963 | tdesc_data_alloc (void) | |
964 | { | |
41bf6aca | 965 | return XCNEW (struct tdesc_arch_data); |
123dc839 DJ |
966 | } |
967 | ||
968 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
969 | to be used (for instance if it was unsuitable for the | |
970 | architecture). */ | |
971 | ||
972 | void | |
973 | tdesc_data_cleanup (void *data_untyped) | |
974 | { | |
19ba03f4 | 975 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 976 | |
ad068eab | 977 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
978 | xfree (data); |
979 | } | |
980 | ||
981 | /* Search FEATURE for a register named NAME. */ | |
982 | ||
7cc46491 DJ |
983 | static struct tdesc_reg * |
984 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
985 | const char *name) | |
123dc839 DJ |
986 | { |
987 | int ixr; | |
988 | struct tdesc_reg *reg; | |
989 | ||
990 | for (ixr = 0; | |
991 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
992 | ixr++) | |
993 | if (strcasecmp (reg->name, name) == 0) | |
7cc46491 | 994 | return reg; |
123dc839 | 995 | |
7cc46491 DJ |
996 | return NULL; |
997 | } | |
998 | ||
999 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
1000 | ||
1001 | int | |
1002 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
1003 | struct tdesc_arch_data *data, | |
1004 | int regno, const char *name) | |
1005 | { | |
ad068eab | 1006 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
1007 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
1008 | ||
1009 | if (reg == NULL) | |
1010 | return 0; | |
1011 | ||
1012 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
1013 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
1014 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
1015 | ||
1016 | arch_reg.reg = reg; | |
1017 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 1018 | return 1; |
123dc839 DJ |
1019 | } |
1020 | ||
58d6951d DJ |
1021 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
1022 | register number to it. */ | |
1023 | ||
1024 | int | |
1025 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
1026 | const char *name) | |
1027 | { | |
1028 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1029 | ||
1030 | if (reg == NULL) | |
1031 | return 0; | |
1032 | ||
1033 | return 1; | |
1034 | } | |
1035 | ||
7cc46491 DJ |
1036 | /* Search FEATURE for a register whose name is in NAMES and assign |
1037 | REGNO to it. */ | |
123dc839 DJ |
1038 | |
1039 | int | |
1040 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
1041 | struct tdesc_arch_data *data, | |
1042 | int regno, const char *const names[]) | |
1043 | { | |
1044 | int i; | |
1045 | ||
1046 | for (i = 0; names[i] != NULL; i++) | |
1047 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
1048 | return 1; | |
1049 | ||
1050 | return 0; | |
1051 | } | |
1052 | ||
7cc46491 DJ |
1053 | /* Search FEATURE for a register named NAME, and return its size in |
1054 | bits. The register must exist. */ | |
1055 | ||
1056 | int | |
1057 | tdesc_register_size (const struct tdesc_feature *feature, | |
1058 | const char *name) | |
1059 | { | |
1060 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1061 | ||
1062 | gdb_assert (reg != NULL); | |
1063 | return reg->bitsize; | |
1064 | } | |
1065 | ||
123dc839 DJ |
1066 | /* Look up a register by its GDB internal register number. */ |
1067 | ||
ad068eab UW |
1068 | static struct tdesc_arch_reg * |
1069 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 1070 | { |
123dc839 DJ |
1071 | struct tdesc_arch_data *data; |
1072 | ||
19ba03f4 | 1073 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab UW |
1074 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
1075 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
1076 | else |
1077 | return NULL; | |
1078 | } | |
1079 | ||
ad068eab UW |
1080 | static struct tdesc_reg * |
1081 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
1082 | { | |
1083 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 1084 | |
ad068eab UW |
1085 | return reg? reg->reg : NULL; |
1086 | } | |
1087 | ||
f8b73d13 DJ |
1088 | /* Return the name of register REGNO, from the target description or |
1089 | from an architecture-provided pseudo_register_name method. */ | |
1090 | ||
1091 | const char * | |
d93859e2 | 1092 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 1093 | { |
d93859e2 UW |
1094 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1095 | int num_regs = gdbarch_num_regs (gdbarch); | |
1096 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
1097 | |
1098 | if (reg != NULL) | |
1099 | return reg->name; | |
1100 | ||
1101 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1102 | { | |
19ba03f4 SM |
1103 | struct tdesc_arch_data *data |
1104 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1105 | |
123dc839 | 1106 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 1107 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
1108 | } |
1109 | ||
1110 | return ""; | |
1111 | } | |
1112 | ||
58d6951d | 1113 | struct type * |
123dc839 DJ |
1114 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
1115 | { | |
ad068eab UW |
1116 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
1117 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1118 | int num_regs = gdbarch_num_regs (gdbarch); |
1119 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1120 | ||
1121 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1122 | { | |
19ba03f4 SM |
1123 | struct tdesc_arch_data *data |
1124 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1125 | |
123dc839 DJ |
1126 | gdb_assert (data->pseudo_register_type != NULL); |
1127 | return data->pseudo_register_type (gdbarch, regno); | |
1128 | } | |
1129 | ||
1130 | if (reg == NULL) | |
1131 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1132 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1133 | |
ad068eab | 1134 | if (arch_reg->type == NULL) |
123dc839 | 1135 | { |
ad068eab UW |
1136 | /* First check for a predefined or target defined type. */ |
1137 | if (reg->tdesc_type) | |
1138 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
1139 | ||
1140 | /* Next try size-sensitive type shortcuts. */ | |
1141 | else if (strcmp (reg->type, "float") == 0) | |
1142 | { | |
1143 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1144 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1145 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1146 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1147 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1148 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1149 | else | |
1150 | { | |
1151 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1152 | reg->name, reg->bitsize); | |
1153 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1154 | } | |
1155 | } | |
1156 | else if (strcmp (reg->type, "int") == 0) | |
1157 | { | |
1158 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1159 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1160 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1161 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1162 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1163 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1164 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1165 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1166 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1167 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1168 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1169 | /* A bit desperate by this point... */ |
ad068eab UW |
1170 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1171 | else | |
1172 | { | |
1173 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1174 | reg->name, reg->bitsize); | |
1175 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | if (arch_reg->type == NULL) | |
1180 | internal_error (__FILE__, __LINE__, | |
1181 | "Register \"%s\" has an unknown type \"%s\"", | |
1182 | reg->name, reg->type); | |
123dc839 | 1183 | } |
123dc839 | 1184 | |
ad068eab | 1185 | return arch_reg->type; |
123dc839 DJ |
1186 | } |
1187 | ||
1188 | static int | |
1189 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1190 | { | |
1191 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1192 | ||
1193 | if (reg != NULL) | |
1194 | return reg->target_regnum; | |
1195 | else | |
1196 | return -1; | |
1197 | } | |
1198 | ||
1199 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
1200 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
1201 | Unlike a gdbarch register_reggroup_p method, this function will |
1202 | return -1 if it does not know; the caller should handle registers | |
1203 | with no specified group. | |
123dc839 DJ |
1204 | |
1205 | Arbitrary strings (other than "general", "float", and "vector") | |
1206 | from the description are not used; they cause the register to be | |
1207 | displayed in "info all-registers" but excluded from "info | |
1208 | registers" et al. The names of containing features are also not | |
1209 | used. This might be extended to display registers in some more | |
1210 | useful groupings. | |
1211 | ||
1212 | The save-restore flag is also implemented here. */ | |
1213 | ||
f8b73d13 DJ |
1214 | int |
1215 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1216 | struct reggroup *reggroup) | |
123dc839 | 1217 | { |
123dc839 DJ |
1218 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1219 | ||
123dc839 DJ |
1220 | if (reg != NULL && reg->group != NULL) |
1221 | { | |
1222 | int general_p = 0, float_p = 0, vector_p = 0; | |
1223 | ||
1224 | if (strcmp (reg->group, "general") == 0) | |
1225 | general_p = 1; | |
1226 | else if (strcmp (reg->group, "float") == 0) | |
1227 | float_p = 1; | |
1228 | else if (strcmp (reg->group, "vector") == 0) | |
1229 | vector_p = 1; | |
1230 | ||
1231 | if (reggroup == float_reggroup) | |
1232 | return float_p; | |
1233 | ||
1234 | if (reggroup == vector_reggroup) | |
1235 | return vector_p; | |
1236 | ||
1237 | if (reggroup == general_reggroup) | |
1238 | return general_p; | |
1239 | } | |
1240 | ||
1241 | if (reg != NULL | |
1242 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1243 | return reg->save_restore; | |
1244 | ||
f8b73d13 DJ |
1245 | return -1; |
1246 | } | |
1247 | ||
1248 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1249 | group specified go to the default reggroup function and are handled | |
1250 | by type. */ | |
1251 | ||
1252 | static int | |
1253 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1254 | struct reggroup *reggroup) | |
1255 | { | |
1256 | int num_regs = gdbarch_num_regs (gdbarch); | |
1257 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1258 | int ret; | |
1259 | ||
1260 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1261 | { | |
19ba03f4 SM |
1262 | struct tdesc_arch_data *data |
1263 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1264 | |
58d6951d DJ |
1265 | if (data->pseudo_register_reggroup_p != NULL) |
1266 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1267 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1268 | } |
1269 | ||
1270 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1271 | if (ret != -1) | |
1272 | return ret; | |
1273 | ||
123dc839 DJ |
1274 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1275 | } | |
1276 | ||
1277 | /* Record architecture-specific functions to call for pseudo-register | |
1278 | support. */ | |
1279 | ||
1280 | void | |
1281 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1282 | gdbarch_register_name_ftype *pseudo_name) | |
1283 | { | |
19ba03f4 SM |
1284 | struct tdesc_arch_data *data |
1285 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1286 | |
1287 | data->pseudo_register_name = pseudo_name; | |
1288 | } | |
1289 | ||
1290 | void | |
1291 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1292 | gdbarch_register_type_ftype *pseudo_type) | |
1293 | { | |
19ba03f4 SM |
1294 | struct tdesc_arch_data *data |
1295 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1296 | |
1297 | data->pseudo_register_type = pseudo_type; | |
1298 | } | |
1299 | ||
1300 | void | |
1301 | set_tdesc_pseudo_register_reggroup_p | |
1302 | (struct gdbarch *gdbarch, | |
1303 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1304 | { | |
19ba03f4 SM |
1305 | struct tdesc_arch_data *data |
1306 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1307 | |
1308 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1309 | } | |
1310 | ||
1311 | /* Update GDBARCH to use the target description for registers. */ | |
1312 | ||
1313 | void | |
1314 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1315 | const struct target_desc *target_desc, |
123dc839 DJ |
1316 | struct tdesc_arch_data *early_data) |
1317 | { | |
1318 | int num_regs = gdbarch_num_regs (gdbarch); | |
c6913b7d | 1319 | int ixf, ixr; |
123dc839 DJ |
1320 | struct tdesc_feature *feature; |
1321 | struct tdesc_reg *reg; | |
1322 | struct tdesc_arch_data *data; | |
ad068eab | 1323 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
1324 | htab_t reg_hash; |
1325 | ||
123dc839 DJ |
1326 | /* We can't use the description for registers if it doesn't describe |
1327 | any. This function should only be called after validating | |
1328 | registers, so the caller should know that registers are | |
1329 | included. */ | |
1330 | gdb_assert (tdesc_has_registers (target_desc)); | |
1331 | ||
19ba03f4 | 1332 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1333 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
1334 | xfree (early_data); |
1335 | ||
1336 | /* Build up a set of all registers, so that we can assign register | |
1337 | numbers where needed. The hash table expands as necessary, so | |
1338 | the initial size is arbitrary. */ | |
1339 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
1340 | for (ixf = 0; | |
1341 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1342 | ixf++) | |
1343 | for (ixr = 0; | |
1344 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1345 | ixr++) | |
1346 | { | |
1347 | void **slot = htab_find_slot (reg_hash, reg, INSERT); | |
1348 | ||
1349 | *slot = reg; | |
1350 | } | |
1351 | ||
1352 | /* Remove any registers which were assigned numbers by the | |
1353 | architecture. */ | |
ad068eab UW |
1354 | for (ixr = 0; |
1355 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); | |
1356 | ixr++) | |
1357 | if (arch_reg->reg) | |
1358 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
1359 | |
1360 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1361 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1362 | Iterate over the features, not the hash table, so that the order |
1363 | matches that in the target description. */ | |
1364 | ||
ad068eab UW |
1365 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1366 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1367 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1368 | for (ixf = 0; |
1369 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1370 | ixf++) | |
1371 | for (ixr = 0; | |
1372 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1373 | ixr++) | |
1374 | if (htab_find (reg_hash, reg) != NULL) | |
1375 | { | |
ad068eab UW |
1376 | new_arch_reg.reg = reg; |
1377 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1378 | num_regs++; |
1379 | } | |
1380 | ||
1381 | htab_delete (reg_hash); | |
1382 | ||
1383 | /* Update the architecture. */ | |
1384 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1385 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1386 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1387 | set_gdbarch_remote_register_number (gdbarch, | |
1388 | tdesc_remote_register_number); | |
1389 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1390 | } | |
1391 | \f | |
1392 | ||
123dc839 DJ |
1393 | void |
1394 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1395 | int regnum, int save_restore, const char *group, | |
1396 | int bitsize, const char *type) | |
1397 | { | |
72ddacb7 YQ |
1398 | tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, |
1399 | group, bitsize, type); | |
123dc839 DJ |
1400 | |
1401 | VEC_safe_push (tdesc_reg_p, feature->registers, reg); | |
1402 | } | |
1403 | ||
ad068eab UW |
1404 | struct tdesc_type * |
1405 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1406 | struct tdesc_type *field_type, int count) | |
1407 | { | |
72ddacb7 | 1408 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_VECTOR); |
ad068eab | 1409 | |
ad068eab UW |
1410 | type->u.v.type = field_type; |
1411 | type->u.v.count = count; | |
1412 | ||
1413 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1414 | return type; | |
1415 | } | |
1416 | ||
f5dff777 DJ |
1417 | struct tdesc_type * |
1418 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
1419 | { | |
72ddacb7 | 1420 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_STRUCT); |
f5dff777 DJ |
1421 | |
1422 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1423 | return type; | |
1424 | } | |
1425 | ||
1426 | /* Set the total length of TYPE. Structs which contain bitfields may | |
1427 | omit the reserved bits, so the end of the last field may not | |
1428 | suffice. */ | |
1429 | ||
1430 | void | |
54157a25 | 1431 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
f5dff777 DJ |
1432 | { |
1433 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1434 | gdb_assert (size > 0); |
f5dff777 DJ |
1435 | type->u.u.size = size; |
1436 | } | |
1437 | ||
ad068eab UW |
1438 | struct tdesc_type * |
1439 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1440 | { | |
72ddacb7 | 1441 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_UNION); |
ad068eab UW |
1442 | |
1443 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1444 | return type; | |
1445 | } | |
1446 | ||
f5dff777 DJ |
1447 | struct tdesc_type * |
1448 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
54157a25 | 1449 | int size) |
f5dff777 | 1450 | { |
72ddacb7 | 1451 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_FLAGS); |
f5dff777 | 1452 | |
54157a25 DE |
1453 | gdb_assert (size > 0); |
1454 | ||
81516450 | 1455 | type->u.u.size = size; |
f5dff777 DJ |
1456 | |
1457 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1458 | return type; | |
1459 | } | |
1460 | ||
81516450 DE |
1461 | struct tdesc_type * |
1462 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
1463 | int size) | |
1464 | { | |
72ddacb7 | 1465 | struct tdesc_type *type = new tdesc_type (name, TDESC_TYPE_ENUM); |
81516450 DE |
1466 | |
1467 | gdb_assert (size > 0); | |
1468 | ||
81516450 DE |
1469 | type->u.u.size = size; |
1470 | ||
1471 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1472 | return type; | |
1473 | } | |
1474 | ||
1475 | /* Add a new field to TYPE. */ | |
f5dff777 | 1476 | |
ad068eab UW |
1477 | void |
1478 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1479 | struct tdesc_type *field_type) | |
1480 | { | |
1481 | struct tdesc_type_field f = { 0 }; | |
1482 | ||
f5dff777 DJ |
1483 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1484 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab UW |
1485 | |
1486 | f.name = xstrdup (field_name); | |
1487 | f.type = field_type; | |
81516450 DE |
1488 | /* Initialize these values so we know this is not a bit-field |
1489 | when we print-c-tdesc. */ | |
1490 | f.start = -1; | |
1491 | f.end = -1; | |
ad068eab UW |
1492 | |
1493 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1494 | } | |
1495 | ||
81516450 | 1496 | /* Add a new typed bitfield to TYPE. */ |
f5dff777 DJ |
1497 | |
1498 | void | |
81516450 DE |
1499 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
1500 | int start, int end, struct tdesc_type *field_type) | |
f5dff777 DJ |
1501 | { |
1502 | struct tdesc_type_field f = { 0 }; | |
1503 | ||
81516450 DE |
1504 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1505 | || type->kind == TDESC_TYPE_FLAGS); | |
1506 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 DJ |
1507 | |
1508 | f.name = xstrdup (field_name); | |
1509 | f.start = start; | |
1510 | f.end = end; | |
81516450 | 1511 | f.type = field_type; |
f5dff777 DJ |
1512 | |
1513 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1514 | } | |
1515 | ||
81516450 DE |
1516 | /* Add a new untyped bitfield to TYPE. |
1517 | Untyped bitfields become either uint32 or uint64 depending on the size | |
1518 | of the underlying type. */ | |
1519 | ||
1520 | void | |
1521 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, | |
1522 | int start, int end) | |
1523 | { | |
1524 | struct tdesc_type *field_type; | |
1525 | ||
1526 | gdb_assert (start >= 0 && end >= start); | |
1527 | ||
1528 | if (type->u.u.size > 4) | |
1529 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
1530 | else | |
1531 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1532 | ||
1533 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1534 | } | |
1535 | ||
1536 | /* A flag is just a typed(bool) single-bit bitfield. | |
1537 | This function is kept to minimize changes in generated files. */ | |
1538 | ||
f5dff777 DJ |
1539 | void |
1540 | tdesc_add_flag (struct tdesc_type *type, int start, | |
1541 | const char *flag_name) | |
1542 | { | |
81516450 | 1543 | struct tdesc_type_field f = { 0 }; |
f5dff777 | 1544 | |
81516450 DE |
1545 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1546 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 DJ |
1547 | |
1548 | f.name = xstrdup (flag_name); | |
1549 | f.start = start; | |
81516450 DE |
1550 | f.end = start; |
1551 | f.type = tdesc_predefined_type (TDESC_TYPE_BOOL); | |
f5dff777 | 1552 | |
81516450 DE |
1553 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
1554 | } | |
1555 | ||
1556 | void | |
1557 | tdesc_add_enum_value (struct tdesc_type *type, int value, | |
1558 | const char *name) | |
1559 | { | |
1560 | struct tdesc_type_field f = { 0 }; | |
1561 | ||
1562 | gdb_assert (type->kind == TDESC_TYPE_ENUM); | |
1563 | ||
1564 | f.name = xstrdup (name); | |
1565 | f.start = value; | |
1566 | f.end = -1; | |
1567 | f.type = tdesc_predefined_type (TDESC_TYPE_INT32); | |
1568 | ||
1569 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
f5dff777 DJ |
1570 | } |
1571 | ||
123dc839 DJ |
1572 | struct tdesc_feature * |
1573 | tdesc_create_feature (struct target_desc *tdesc, const char *name) | |
1574 | { | |
72ddacb7 | 1575 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 DJ |
1576 | |
1577 | VEC_safe_push (tdesc_feature_p, tdesc->features, new_feature); | |
1578 | return new_feature; | |
1579 | } | |
1580 | ||
424163ea DJ |
1581 | struct target_desc * |
1582 | allocate_target_description (void) | |
1583 | { | |
b468ff4c | 1584 | return new target_desc (); |
424163ea | 1585 | } |
29709017 | 1586 | |
23181151 DJ |
1587 | static void |
1588 | free_target_description (void *arg) | |
1589 | { | |
19ba03f4 | 1590 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1591 | |
b468ff4c | 1592 | delete target_desc; |
23181151 DJ |
1593 | } |
1594 | ||
1595 | struct cleanup * | |
1596 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1597 | { | |
1598 | return make_cleanup (free_target_description, target_desc); | |
1599 | } | |
1600 | ||
e35359c5 UW |
1601 | void |
1602 | tdesc_add_compatible (struct target_desc *target_desc, | |
1603 | const struct bfd_arch_info *compatible) | |
1604 | { | |
1605 | const struct bfd_arch_info *compat; | |
1606 | int ix; | |
1607 | ||
1608 | /* If this instance of GDB is compiled without BFD support for the | |
1609 | compatible architecture, simply ignore it -- we would not be able | |
1610 | to handle it anyway. */ | |
1611 | if (compatible == NULL) | |
1612 | return; | |
1613 | ||
1614 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
1615 | ix++) | |
1616 | if (compat == compatible) | |
1617 | internal_error (__FILE__, __LINE__, | |
1618 | _("Attempted to add duplicate " | |
1619 | "compatible architecture \"%s\""), | |
1620 | compatible->printable_name); | |
1621 | ||
1622 | VEC_safe_push (arch_p, target_desc->compatible, compatible); | |
1623 | } | |
1624 | ||
29709017 DJ |
1625 | void |
1626 | set_tdesc_property (struct target_desc *target_desc, | |
1627 | const char *key, const char *value) | |
1628 | { | |
1629 | struct property *prop, new_prop; | |
1630 | int ix; | |
1631 | ||
1632 | gdb_assert (key != NULL && value != NULL); | |
1633 | ||
1634 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1635 | ix++) | |
1636 | if (strcmp (prop->key, key) == 0) | |
1637 | internal_error (__FILE__, __LINE__, | |
1638 | _("Attempted to add duplicate property \"%s\""), key); | |
1639 | ||
23181151 DJ |
1640 | new_prop.key = xstrdup (key); |
1641 | new_prop.value = xstrdup (value); | |
29709017 DJ |
1642 | VEC_safe_push (property_s, target_desc->properties, &new_prop); |
1643 | } | |
23181151 DJ |
1644 | |
1645 | void | |
1646 | set_tdesc_architecture (struct target_desc *target_desc, | |
1647 | const struct bfd_arch_info *arch) | |
1648 | { | |
1649 | target_desc->arch = arch; | |
1650 | } | |
08d16641 PA |
1651 | |
1652 | void | |
1653 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1654 | { | |
1655 | target_desc->osabi = osabi; | |
1656 | } | |
23181151 DJ |
1657 | \f |
1658 | ||
1659 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1660 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1661 | ||
1662 | /* Helper functions for the CLI commands. */ | |
1663 | ||
1664 | static void | |
1665 | set_tdesc_cmd (char *args, int from_tty) | |
1666 | { | |
635c7e8a | 1667 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1668 | } |
1669 | ||
1670 | static void | |
1671 | show_tdesc_cmd (char *args, int from_tty) | |
1672 | { | |
1673 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1674 | } | |
1675 | ||
1676 | static void | |
1677 | unset_tdesc_cmd (char *args, int from_tty) | |
1678 | { | |
635c7e8a | 1679 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1680 | } |
1681 | ||
1682 | static void | |
1683 | set_tdesc_filename_cmd (char *args, int from_tty, | |
1684 | struct cmd_list_element *c) | |
1685 | { | |
6ecd4729 PA |
1686 | xfree (target_description_filename); |
1687 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1688 | ||
23181151 DJ |
1689 | target_clear_description (); |
1690 | target_find_description (); | |
1691 | } | |
1692 | ||
1693 | static void | |
1694 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1695 | struct cmd_list_element *c, | |
1696 | const char *value) | |
1697 | { | |
6ecd4729 PA |
1698 | value = target_description_filename; |
1699 | ||
23181151 | 1700 | if (value != NULL && *value != '\0') |
3e43a32a | 1701 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1702 | value); |
1703 | else | |
3e43a32a MS |
1704 | printf_filtered (_("The target description will be " |
1705 | "read from the target.\n")); | |
23181151 DJ |
1706 | } |
1707 | ||
1708 | static void | |
1709 | unset_tdesc_filename_cmd (char *args, int from_tty) | |
1710 | { | |
1711 | xfree (target_description_filename); | |
1712 | target_description_filename = NULL; | |
1713 | target_clear_description (); | |
1714 | target_find_description (); | |
1715 | } | |
1716 | ||
81adfced DJ |
1717 | static void |
1718 | maint_print_c_tdesc_cmd (char *args, int from_tty) | |
1719 | { | |
1720 | const struct target_desc *tdesc; | |
e35359c5 | 1721 | const struct bfd_arch_info *compatible; |
81adfced DJ |
1722 | const char *filename, *inp; |
1723 | char *function, *outp; | |
1724 | struct property *prop; | |
1725 | struct tdesc_feature *feature; | |
1726 | struct tdesc_reg *reg; | |
ad068eab UW |
1727 | struct tdesc_type *type; |
1728 | struct tdesc_type_field *f; | |
81adfced | 1729 | int ix, ix2, ix3; |
4e2f8df6 | 1730 | int printed_field_type = 0; |
81adfced | 1731 | |
8e2141c6 YQ |
1732 | if (args == NULL) |
1733 | { | |
1734 | /* Use the global target-supplied description, not the current | |
1735 | architecture's. This lets a GDB for one architecture generate C | |
1736 | for another architecture's description, even though the gdbarch | |
1737 | initialization code will reject the new description. */ | |
1738 | tdesc = current_target_desc; | |
1739 | filename = target_description_filename; | |
1740 | } | |
1741 | else | |
1742 | { | |
1743 | /* Use the target description from the XML file. */ | |
1744 | filename = args; | |
1745 | tdesc = file_read_description_xml (filename); | |
1746 | } | |
1747 | ||
81adfced DJ |
1748 | if (tdesc == NULL) |
1749 | error (_("There is no target description to print.")); | |
1750 | ||
8e2141c6 | 1751 | if (filename == NULL) |
81adfced DJ |
1752 | error (_("The current target description did not come from an XML file.")); |
1753 | ||
8e2141c6 | 1754 | filename = lbasename (filename); |
224c3ddb | 1755 | function = (char *) alloca (strlen (filename) + 1); |
81adfced DJ |
1756 | for (inp = filename, outp = function; *inp != '\0'; inp++) |
1757 | if (*inp == '.') | |
1758 | break; | |
1759 | else if (*inp == '-') | |
1760 | *outp++ = '_'; | |
1761 | else | |
1762 | *outp++ = *inp; | |
1763 | *outp = '\0'; | |
1764 | ||
1765 | /* Standard boilerplate. */ | |
c4bfde41 JK |
1766 | printf_unfiltered ("/* THIS FILE IS GENERATED. " |
1767 | "-*- buffer-read-only: t -*- vi" | |
1768 | ":set ro:\n"); | |
1769 | printf_unfiltered (" Original: %s */\n\n", filename); | |
81adfced | 1770 | printf_unfiltered ("#include \"defs.h\"\n"); |
c3f08eb7 | 1771 | printf_unfiltered ("#include \"osabi.h\"\n"); |
81adfced DJ |
1772 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); |
1773 | printf_unfiltered ("\n"); | |
1774 | ||
1775 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", function); | |
1776 | printf_unfiltered ("static void\n"); | |
1777 | printf_unfiltered ("initialize_tdesc_%s (void)\n", function); | |
1778 | printf_unfiltered ("{\n"); | |
1779 | printf_unfiltered | |
1780 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1781 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
4e2f8df6 SDJ |
1782 | |
1783 | /* Now we do some "filtering" in order to know which variables to | |
1784 | declare. This is needed because otherwise we would declare unused | |
1785 | variables `field_type' and `type'. */ | |
1786 | for (ix = 0; | |
1787 | VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature); | |
1788 | ix++) | |
1789 | { | |
1790 | int printed_desc_type = 0; | |
1791 | ||
1792 | for (ix2 = 0; | |
1793 | VEC_iterate (tdesc_type_p, feature->types, ix2, type); | |
1794 | ix2++) | |
1795 | { | |
1796 | if (!printed_field_type) | |
1797 | { | |
1798 | printf_unfiltered (" struct tdesc_type *field_type;\n"); | |
1799 | printed_field_type = 1; | |
1800 | } | |
1801 | ||
81516450 DE |
1802 | if ((type->kind == TDESC_TYPE_UNION |
1803 | || type->kind == TDESC_TYPE_STRUCT | |
1804 | || type->kind == TDESC_TYPE_FLAGS | |
1805 | || type->kind == TDESC_TYPE_ENUM) | |
1806 | && VEC_length (tdesc_type_field, type->u.u.fields) > 0) | |
4e2f8df6 SDJ |
1807 | { |
1808 | printf_unfiltered (" struct tdesc_type *type;\n"); | |
1809 | printed_desc_type = 1; | |
1810 | break; | |
1811 | } | |
1812 | } | |
1813 | ||
1814 | if (printed_desc_type) | |
1815 | break; | |
1816 | } | |
1817 | ||
81adfced DJ |
1818 | printf_unfiltered ("\n"); |
1819 | ||
1820 | if (tdesc_architecture (tdesc) != NULL) | |
1821 | { | |
1822 | printf_unfiltered | |
1823 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1824 | tdesc_architecture (tdesc)->printable_name); | |
1825 | printf_unfiltered ("\n"); | |
1826 | } | |
1827 | ||
c3f08eb7 L |
1828 | if (tdesc_osabi (tdesc) > GDB_OSABI_UNKNOWN |
1829 | && tdesc_osabi (tdesc) < GDB_OSABI_INVALID) | |
1830 | { | |
1831 | printf_unfiltered | |
1832 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1833 | gdbarch_osabi_name (tdesc_osabi (tdesc))); | |
1834 | printf_unfiltered ("\n"); | |
1835 | } | |
1836 | ||
e35359c5 UW |
1837 | for (ix = 0; VEC_iterate (arch_p, tdesc->compatible, ix, compatible); |
1838 | ix++) | |
1839 | { | |
1840 | printf_unfiltered | |
1841 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1842 | compatible->printable_name); | |
1843 | } | |
1844 | if (ix) | |
1845 | printf_unfiltered ("\n"); | |
1846 | ||
81adfced DJ |
1847 | for (ix = 0; VEC_iterate (property_s, tdesc->properties, ix, prop); |
1848 | ix++) | |
1849 | { | |
1850 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1851 | prop->key, prop->value); | |
1852 | } | |
1853 | ||
1854 | for (ix = 0; | |
1855 | VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature); | |
1856 | ix++) | |
1857 | { | |
3e43a32a MS |
1858 | printf_unfiltered (" \ |
1859 | feature = tdesc_create_feature (result, \"%s\");\n", | |
81adfced DJ |
1860 | feature->name); |
1861 | ||
1862 | for (ix2 = 0; | |
ad068eab | 1863 | VEC_iterate (tdesc_type_p, feature->types, ix2, type); |
81adfced DJ |
1864 | ix2++) |
1865 | { | |
ad068eab | 1866 | switch (type->kind) |
81adfced | 1867 | { |
ad068eab | 1868 | case TDESC_TYPE_VECTOR: |
81adfced DJ |
1869 | printf_unfiltered |
1870 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1871 | type->u.v.type->name); |
81adfced | 1872 | printf_unfiltered |
ad068eab UW |
1873 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", |
1874 | type->name, type->u.v.count); | |
81adfced | 1875 | break; |
f92b06da | 1876 | case TDESC_TYPE_STRUCT: |
81516450 DE |
1877 | case TDESC_TYPE_FLAGS: |
1878 | if (type->kind == TDESC_TYPE_STRUCT) | |
1879 | { | |
1880 | printf_unfiltered | |
1881 | (" type = tdesc_create_struct (feature, \"%s\");\n", | |
1882 | type->name); | |
1883 | if (type->u.u.size != 0) | |
1884 | printf_unfiltered | |
1885 | (" tdesc_set_struct_size (type, %d);\n", | |
1886 | type->u.u.size); | |
1887 | } | |
1888 | else | |
1889 | { | |
1890 | printf_unfiltered | |
1891 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", | |
1892 | type->name, type->u.u.size); | |
1893 | } | |
f92b06da WT |
1894 | for (ix3 = 0; |
1895 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1896 | ix3++) | |
1897 | { | |
81516450 DE |
1898 | const char *type_name; |
1899 | ||
1900 | gdb_assert (f->type != NULL); | |
1901 | type_name = f->type->name; | |
1902 | ||
1903 | /* To minimize changes to generated files, don't emit type | |
1904 | info for fields that have defaulted types. */ | |
1905 | if (f->start != -1) | |
1906 | { | |
1907 | gdb_assert (f->end != -1); | |
1908 | if (f->type->kind == TDESC_TYPE_BOOL) | |
1909 | { | |
1910 | gdb_assert (f->start == f->end); | |
1911 | printf_unfiltered | |
1912 | (" tdesc_add_flag (type, %d, \"%s\");\n", | |
1913 | f->start, f->name); | |
1914 | } | |
1915 | else if ((type->u.u.size == 4 | |
1916 | && f->type->kind == TDESC_TYPE_UINT32) | |
1917 | || (type->u.u.size == 8 | |
1918 | && f->type->kind == TDESC_TYPE_UINT64)) | |
1919 | { | |
1920 | printf_unfiltered | |
1921 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", | |
1922 | f->name, f->start, f->end); | |
1923 | } | |
1924 | else | |
1925 | { | |
1926 | printf_unfiltered | |
1927 | (" field_type = tdesc_named_type (feature," | |
1928 | " \"%s\");\n", | |
1929 | type_name); | |
1930 | printf_unfiltered | |
1931 | (" tdesc_add_typed_bitfield (type, \"%s\"," | |
1932 | " %d, %d, field_type);\n", | |
1933 | f->name, f->start, f->end); | |
1934 | } | |
1935 | } | |
1936 | else /* Not a bitfield. */ | |
f92b06da | 1937 | { |
81516450 DE |
1938 | gdb_assert (f->end == -1); |
1939 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
f92b06da | 1940 | printf_unfiltered |
81516450 DE |
1941 | (" field_type = tdesc_named_type (feature," |
1942 | " \"%s\");\n", | |
1943 | type_name); | |
f92b06da WT |
1944 | printf_unfiltered |
1945 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
1946 | f->name); | |
1947 | } | |
f92b06da WT |
1948 | } |
1949 | break; | |
ad068eab | 1950 | case TDESC_TYPE_UNION: |
81adfced | 1951 | printf_unfiltered |
ad068eab UW |
1952 | (" type = tdesc_create_union (feature, \"%s\");\n", |
1953 | type->name); | |
1954 | for (ix3 = 0; | |
1955 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1956 | ix3++) | |
81adfced DJ |
1957 | { |
1958 | printf_unfiltered | |
1959 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1960 | f->type->name); |
81adfced | 1961 | printf_unfiltered |
ad068eab UW |
1962 | (" tdesc_add_field (type, \"%s\", field_type);\n", |
1963 | f->name); | |
81adfced | 1964 | } |
81adfced | 1965 | break; |
81516450 | 1966 | case TDESC_TYPE_ENUM: |
a6f5ef51 | 1967 | printf_unfiltered |
81516450 DE |
1968 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", |
1969 | type->name, type->u.u.size); | |
a6f5ef51 | 1970 | for (ix3 = 0; |
81516450 | 1971 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); |
a6f5ef51 L |
1972 | ix3++) |
1973 | printf_unfiltered | |
81516450 DE |
1974 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", |
1975 | f->start, f->name); | |
a6f5ef51 | 1976 | break; |
81adfced | 1977 | default: |
ad068eab | 1978 | error (_("C output is not supported type \"%s\"."), type->name); |
81adfced | 1979 | } |
81adfced DJ |
1980 | printf_unfiltered ("\n"); |
1981 | } | |
1982 | ||
1983 | for (ix2 = 0; | |
1984 | VEC_iterate (tdesc_reg_p, feature->registers, ix2, reg); | |
1985 | ix2++) | |
1986 | { | |
1987 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
1988 | reg->name, reg->target_regnum, reg->save_restore); | |
1989 | if (reg->group) | |
1990 | printf_unfiltered ("\"%s\", ", reg->group); | |
1991 | else | |
1992 | printf_unfiltered ("NULL, "); | |
1993 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
1994 | } | |
1995 | ||
1996 | printf_unfiltered ("\n"); | |
1997 | } | |
1998 | ||
1999 | printf_unfiltered (" tdesc_%s = result;\n", function); | |
2000 | printf_unfiltered ("}\n"); | |
2001 | } | |
2002 | ||
2c0b251b PA |
2003 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
2004 | extern initialize_file_ftype _initialize_target_descriptions; | |
2005 | ||
23181151 DJ |
2006 | void |
2007 | _initialize_target_descriptions (void) | |
2008 | { | |
123dc839 DJ |
2009 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
2010 | ||
23181151 DJ |
2011 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
2012 | Set target description specific variables."), | |
2013 | &tdesc_set_cmdlist, "set tdesc ", | |
2014 | 0 /* allow-unknown */, &setlist); | |
2015 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
2016 | Show target description specific variables."), | |
2017 | &tdesc_show_cmdlist, "show tdesc ", | |
2018 | 0 /* allow-unknown */, &showlist); | |
2019 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2020 | Unset target description specific variables."), | |
2021 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2022 | 0 /* allow-unknown */, &unsetlist); | |
2023 | ||
2024 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2025 | &tdesc_filename_cmd_string, |
23181151 DJ |
2026 | _("\ |
2027 | Set the file to read for an XML target description"), _("\ | |
2028 | Show the file to read for an XML target description"), _("\ | |
2029 | When set, GDB will read the target description from a local\n\ | |
2030 | file instead of querying the remote target."), | |
2031 | set_tdesc_filename_cmd, | |
2032 | show_tdesc_filename_cmd, | |
2033 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2034 | ||
2035 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2036 | Unset the file to read for an XML target description. When unset,\n\ | |
2037 | GDB will read the description from the target."), | |
2038 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2039 | |
2040 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2041 | Print the current target description as a C source file."), | |
2042 | &maintenanceprintlist); | |
23181151 | 2043 | } |