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424163ea DJ |
1 | /* Target description support for GDB. |
2 | ||
618f726f | 3 | Copyright (C) 2006-2016 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 | { | |
51 | /* The name of this register. In standard features, it may be | |
52 | recognized by the architecture support code, or it may be purely | |
53 | for the user. */ | |
54 | char *name; | |
55 | ||
56 | /* The register number used by this target to refer to this | |
57 | register. This is used for remote p/P packets and to determine | |
58 | the ordering of registers in the remote g/G packets. */ | |
59 | long target_regnum; | |
60 | ||
61 | /* If this flag is set, GDB should save and restore this register | |
62 | around calls to an inferior function. */ | |
63 | int save_restore; | |
64 | ||
65 | /* The name of the register group containing this register, or NULL | |
66 | if the group should be automatically determined from the | |
67 | register's type. If this is "general", "float", or "vector", the | |
68 | corresponding "info" command should display this register's | |
69 | value. It can be an arbitrary string, but should be limited to | |
70 | alphanumeric characters and internal hyphens. Currently other | |
71 | strings are ignored (treated as NULL). */ | |
72 | char *group; | |
73 | ||
74 | /* The size of the register, in bits. */ | |
75 | int bitsize; | |
76 | ||
77 | /* The type of the register. This string corresponds to either | |
78 | a named type from the target description or a predefined | |
79 | type from GDB. */ | |
80 | char *type; | |
81 | ||
82 | /* The target-described type corresponding to TYPE, if found. */ | |
ad068eab | 83 | struct tdesc_type *tdesc_type; |
123dc839 DJ |
84 | } *tdesc_reg_p; |
85 | DEF_VEC_P(tdesc_reg_p); | |
86 | ||
87 | /* A named type from a target description. */ | |
ad068eab UW |
88 | |
89 | typedef struct tdesc_type_field | |
90 | { | |
91 | char *name; | |
92 | struct tdesc_type *type; | |
81516450 DE |
93 | /* For non-enum-values, either both are -1 (non-bitfield), or both are |
94 | not -1 (bitfield). For enum values, start is the value (which could be | |
95 | -1), end is -1. */ | |
f5dff777 | 96 | int start, end; |
ad068eab UW |
97 | } tdesc_type_field; |
98 | DEF_VEC_O(tdesc_type_field); | |
99 | ||
52059ffd TT |
100 | enum tdesc_type_kind |
101 | { | |
102 | /* Predefined types. */ | |
81516450 | 103 | TDESC_TYPE_BOOL, |
52059ffd TT |
104 | TDESC_TYPE_INT8, |
105 | TDESC_TYPE_INT16, | |
106 | TDESC_TYPE_INT32, | |
107 | TDESC_TYPE_INT64, | |
108 | TDESC_TYPE_INT128, | |
109 | TDESC_TYPE_UINT8, | |
110 | TDESC_TYPE_UINT16, | |
111 | TDESC_TYPE_UINT32, | |
112 | TDESC_TYPE_UINT64, | |
113 | TDESC_TYPE_UINT128, | |
114 | TDESC_TYPE_CODE_PTR, | |
115 | TDESC_TYPE_DATA_PTR, | |
116 | TDESC_TYPE_IEEE_SINGLE, | |
117 | TDESC_TYPE_IEEE_DOUBLE, | |
118 | TDESC_TYPE_ARM_FPA_EXT, | |
119 | TDESC_TYPE_I387_EXT, | |
120 | ||
121 | /* Types defined by a target feature. */ | |
122 | TDESC_TYPE_VECTOR, | |
123 | TDESC_TYPE_STRUCT, | |
124 | TDESC_TYPE_UNION, | |
81516450 DE |
125 | TDESC_TYPE_FLAGS, |
126 | TDESC_TYPE_ENUM | |
52059ffd TT |
127 | }; |
128 | ||
ad068eab UW |
129 | typedef struct tdesc_type |
130 | { | |
131 | /* The name of this type. */ | |
132 | char *name; | |
133 | ||
134 | /* Identify the kind of this type. */ | |
52059ffd | 135 | enum tdesc_type_kind kind; |
ad068eab UW |
136 | |
137 | /* Kind-specific data. */ | |
138 | union | |
139 | { | |
140 | /* Vector type. */ | |
141 | struct | |
142 | { | |
143 | struct tdesc_type *type; | |
144 | int count; | |
145 | } v; | |
146 | ||
81516450 | 147 | /* Struct, union, flags, or enum type. */ |
ad068eab UW |
148 | struct |
149 | { | |
150 | VEC(tdesc_type_field) *fields; | |
54157a25 | 151 | int size; |
ad068eab UW |
152 | } u; |
153 | } u; | |
154 | } *tdesc_type_p; | |
155 | DEF_VEC_P(tdesc_type_p); | |
123dc839 DJ |
156 | |
157 | /* A feature from a target description. Each feature is a collection | |
158 | of other elements, e.g. registers and types. */ | |
159 | ||
160 | typedef struct tdesc_feature | |
161 | { | |
162 | /* The name of this feature. It may be recognized by the architecture | |
163 | support code. */ | |
164 | char *name; | |
165 | ||
166 | /* The registers associated with this feature. */ | |
167 | VEC(tdesc_reg_p) *registers; | |
168 | ||
169 | /* The types associated with this feature. */ | |
ad068eab | 170 | VEC(tdesc_type_p) *types; |
123dc839 DJ |
171 | } *tdesc_feature_p; |
172 | DEF_VEC_P(tdesc_feature_p); | |
173 | ||
e35359c5 UW |
174 | /* A compatible architecture from a target description. */ |
175 | typedef const struct bfd_arch_info *arch_p; | |
176 | DEF_VEC_P(arch_p); | |
177 | ||
123dc839 DJ |
178 | /* A target description. */ |
179 | ||
424163ea DJ |
180 | struct target_desc |
181 | { | |
23181151 DJ |
182 | /* The architecture reported by the target, if any. */ |
183 | const struct bfd_arch_info *arch; | |
184 | ||
08d16641 PA |
185 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
186 | otherwise. */ | |
187 | enum gdb_osabi osabi; | |
188 | ||
e35359c5 UW |
189 | /* The list of compatible architectures reported by the target. */ |
190 | VEC(arch_p) *compatible; | |
191 | ||
29709017 DJ |
192 | /* Any architecture-specific properties specified by the target. */ |
193 | VEC(property_s) *properties; | |
123dc839 DJ |
194 | |
195 | /* The features associated with this target. */ | |
196 | VEC(tdesc_feature_p) *features; | |
197 | }; | |
198 | ||
199 | /* Per-architecture data associated with a target description. The | |
200 | target description may be shared by multiple architectures, but | |
201 | this data is private to one gdbarch. */ | |
202 | ||
ad068eab UW |
203 | typedef struct tdesc_arch_reg |
204 | { | |
205 | struct tdesc_reg *reg; | |
206 | struct type *type; | |
207 | } tdesc_arch_reg; | |
208 | DEF_VEC_O(tdesc_arch_reg); | |
209 | ||
123dc839 DJ |
210 | struct tdesc_arch_data |
211 | { | |
ad068eab | 212 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
213 | During initialization of the gdbarch this list is used to store |
214 | registers which the architecture assigns a fixed register number. | |
215 | Registers which are NULL in this array, or off the end, are | |
216 | treated as zero-sized and nameless (i.e. placeholders in the | |
217 | numbering). */ | |
ad068eab | 218 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
219 | |
220 | /* Functions which report the register name, type, and reggroups for | |
221 | pseudo-registers. */ | |
222 | gdbarch_register_name_ftype *pseudo_register_name; | |
223 | gdbarch_register_type_ftype *pseudo_register_type; | |
224 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
225 | }; |
226 | ||
6ecd4729 PA |
227 | /* Info about an inferior's target description. There's one of these |
228 | for each inferior. */ | |
424163ea | 229 | |
6ecd4729 PA |
230 | struct target_desc_info |
231 | { | |
232 | /* A flag indicating that a description has already been fetched | |
233 | from the target, so it should not be queried again. */ | |
234 | ||
235 | int fetched; | |
424163ea | 236 | |
6ecd4729 PA |
237 | /* The description fetched from the target, or NULL if the target |
238 | did not supply any description. Only valid when | |
239 | target_desc_fetched is set. Only the description initialization | |
240 | code should access this; normally, the description should be | |
241 | accessed through the gdbarch object. */ | |
424163ea | 242 | |
6ecd4729 | 243 | const struct target_desc *tdesc; |
424163ea | 244 | |
6ecd4729 PA |
245 | /* The filename to read a target description from, as set by "set |
246 | tdesc filename ..." */ | |
424163ea | 247 | |
6ecd4729 PA |
248 | char *filename; |
249 | }; | |
23181151 | 250 | |
6ecd4729 PA |
251 | /* Get the inferior INF's target description info, allocating one on |
252 | the stop if necessary. */ | |
23181151 | 253 | |
6ecd4729 PA |
254 | static struct target_desc_info * |
255 | get_tdesc_info (struct inferior *inf) | |
256 | { | |
257 | if (inf->tdesc_info == NULL) | |
258 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
259 | return inf->tdesc_info; | |
260 | } | |
23181151 | 261 | |
123dc839 DJ |
262 | /* A handle for architecture-specific data associated with the |
263 | target description (see struct tdesc_arch_data). */ | |
264 | ||
265 | static struct gdbarch_data *tdesc_data; | |
266 | ||
6ecd4729 PA |
267 | /* See target-descriptions.h. */ |
268 | ||
269 | int | |
270 | target_desc_info_from_user_p (struct target_desc_info *info) | |
271 | { | |
272 | return info != NULL && info->filename != NULL; | |
273 | } | |
274 | ||
275 | /* See target-descriptions.h. */ | |
276 | ||
277 | void | |
278 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
279 | { | |
280 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
281 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
282 | ||
283 | dest->fetched = src->fetched; | |
284 | dest->tdesc = src->tdesc; | |
285 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
286 | } | |
287 | ||
288 | /* See target-descriptions.h. */ | |
289 | ||
290 | void | |
291 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
292 | { | |
293 | if (tdesc_info != NULL) | |
294 | { | |
295 | xfree (tdesc_info->filename); | |
296 | xfree (tdesc_info); | |
297 | } | |
298 | } | |
299 | ||
300 | /* Convenience helper macros. */ | |
301 | ||
302 | #define target_desc_fetched \ | |
303 | get_tdesc_info (current_inferior ())->fetched | |
304 | #define current_target_desc \ | |
305 | get_tdesc_info (current_inferior ())->tdesc | |
306 | #define target_description_filename \ | |
307 | get_tdesc_info (current_inferior ())->filename | |
308 | ||
309 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
310 | ||
311 | static char *tdesc_filename_cmd_string; | |
312 | ||
424163ea DJ |
313 | /* Fetch the current target's description, and switch the current |
314 | architecture to one which incorporates that description. */ | |
315 | ||
316 | void | |
317 | target_find_description (void) | |
318 | { | |
319 | /* If we've already fetched a description from the target, don't do | |
320 | it again. This allows a target to fetch the description early, | |
321 | during its to_open or to_create_inferior, if it needs extra | |
322 | information about the target to initialize. */ | |
323 | if (target_desc_fetched) | |
324 | return; | |
325 | ||
326 | /* The current architecture should not have any target description | |
327 | specified. It should have been cleared, e.g. when we | |
328 | disconnected from the previous target. */ | |
f5656ead | 329 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 330 | |
23181151 DJ |
331 | /* First try to fetch an XML description from the user-specified |
332 | file. */ | |
333 | current_target_desc = NULL; | |
334 | if (target_description_filename != NULL | |
335 | && *target_description_filename != '\0') | |
336 | current_target_desc | |
337 | = file_read_description_xml (target_description_filename); | |
338 | ||
339 | /* Next try to read the description from the current target using | |
340 | target objects. */ | |
341 | if (current_target_desc == NULL) | |
342 | current_target_desc = target_read_description_xml (¤t_target); | |
343 | ||
344 | /* If that failed try a target-specific hook. */ | |
345 | if (current_target_desc == NULL) | |
346 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
347 | |
348 | /* If a non-NULL description was returned, then update the current | |
349 | architecture. */ | |
350 | if (current_target_desc) | |
351 | { | |
352 | struct gdbarch_info info; | |
353 | ||
354 | gdbarch_info_init (&info); | |
355 | info.target_desc = current_target_desc; | |
356 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
357 | warning (_("Architecture rejected target-supplied description")); |
358 | else | |
359 | { | |
360 | struct tdesc_arch_data *data; | |
361 | ||
19ba03f4 SM |
362 | data = ((struct tdesc_arch_data *) |
363 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 364 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 365 | && data->arch_regs == NULL) |
123dc839 DJ |
366 | warning (_("Target-supplied registers are not supported " |
367 | "by the current architecture")); | |
368 | } | |
424163ea DJ |
369 | } |
370 | ||
371 | /* Now that we know this description is usable, record that we | |
372 | fetched it. */ | |
373 | target_desc_fetched = 1; | |
374 | } | |
375 | ||
376 | /* Discard any description fetched from the current target, and switch | |
377 | the current architecture to one with no target description. */ | |
378 | ||
379 | void | |
380 | target_clear_description (void) | |
381 | { | |
382 | struct gdbarch_info info; | |
383 | ||
384 | if (!target_desc_fetched) | |
385 | return; | |
386 | ||
387 | target_desc_fetched = 0; | |
388 | current_target_desc = NULL; | |
389 | ||
390 | gdbarch_info_init (&info); | |
391 | if (!gdbarch_update_p (info)) | |
392 | internal_error (__FILE__, __LINE__, | |
393 | _("Could not remove target-supplied description")); | |
394 | } | |
395 | ||
396 | /* Return the global current target description. This should only be | |
397 | used by gdbarch initialization code; most access should be through | |
398 | an existing gdbarch. */ | |
399 | ||
400 | const struct target_desc * | |
401 | target_current_description (void) | |
402 | { | |
403 | if (target_desc_fetched) | |
404 | return current_target_desc; | |
405 | ||
406 | return NULL; | |
407 | } | |
e35359c5 UW |
408 | |
409 | /* Return non-zero if this target description is compatible | |
410 | with the given BFD architecture. */ | |
411 | ||
412 | int | |
413 | tdesc_compatible_p (const struct target_desc *target_desc, | |
414 | const struct bfd_arch_info *arch) | |
415 | { | |
416 | const struct bfd_arch_info *compat; | |
417 | int ix; | |
418 | ||
419 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
420 | ix++) | |
421 | { | |
422 | if (compat == arch | |
423 | || arch->compatible (arch, compat) | |
424 | || compat->compatible (compat, arch)) | |
425 | return 1; | |
426 | } | |
427 | ||
428 | return 0; | |
429 | } | |
23181151 DJ |
430 | \f |
431 | ||
123dc839 | 432 | /* Direct accessors for target descriptions. */ |
424163ea | 433 | |
29709017 DJ |
434 | /* Return the string value of a property named KEY, or NULL if the |
435 | property was not specified. */ | |
436 | ||
437 | const char * | |
438 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
439 | { | |
440 | struct property *prop; | |
441 | int ix; | |
442 | ||
443 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
444 | ix++) | |
445 | if (strcmp (prop->key, key) == 0) | |
446 | return prop->value; | |
447 | ||
448 | return NULL; | |
449 | } | |
450 | ||
23181151 DJ |
451 | /* Return the BFD architecture associated with this target |
452 | description, or NULL if no architecture was specified. */ | |
453 | ||
454 | const struct bfd_arch_info * | |
455 | tdesc_architecture (const struct target_desc *target_desc) | |
456 | { | |
457 | return target_desc->arch; | |
458 | } | |
08d16641 PA |
459 | |
460 | /* Return the OSABI associated with this target description, or | |
461 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
462 | ||
463 | enum gdb_osabi | |
464 | tdesc_osabi (const struct target_desc *target_desc) | |
465 | { | |
466 | return target_desc->osabi; | |
467 | } | |
468 | ||
23181151 DJ |
469 | \f |
470 | ||
123dc839 DJ |
471 | /* Return 1 if this target description includes any registers. */ |
472 | ||
473 | int | |
474 | tdesc_has_registers (const struct target_desc *target_desc) | |
475 | { | |
476 | int ix; | |
477 | struct tdesc_feature *feature; | |
478 | ||
479 | if (target_desc == NULL) | |
480 | return 0; | |
481 | ||
482 | for (ix = 0; | |
483 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
484 | ix++) | |
485 | if (! VEC_empty (tdesc_reg_p, feature->registers)) | |
486 | return 1; | |
487 | ||
488 | return 0; | |
489 | } | |
490 | ||
491 | /* Return the feature with the given name, if present, or NULL if | |
492 | the named feature is not found. */ | |
493 | ||
494 | const struct tdesc_feature * | |
495 | tdesc_find_feature (const struct target_desc *target_desc, | |
496 | const char *name) | |
497 | { | |
498 | int ix; | |
499 | struct tdesc_feature *feature; | |
500 | ||
501 | for (ix = 0; | |
502 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
503 | ix++) | |
504 | if (strcmp (feature->name, name) == 0) | |
505 | return feature; | |
506 | ||
507 | return NULL; | |
508 | } | |
509 | ||
510 | /* Return the name of FEATURE. */ | |
511 | ||
512 | const char * | |
513 | tdesc_feature_name (const struct tdesc_feature *feature) | |
514 | { | |
515 | return feature->name; | |
516 | } | |
517 | ||
ad068eab UW |
518 | /* Predefined types. */ |
519 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 520 | { |
81516450 | 521 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
522 | { "int8", TDESC_TYPE_INT8 }, |
523 | { "int16", TDESC_TYPE_INT16 }, | |
524 | { "int32", TDESC_TYPE_INT32 }, | |
525 | { "int64", TDESC_TYPE_INT64 }, | |
526 | { "int128", TDESC_TYPE_INT128 }, | |
527 | { "uint8", TDESC_TYPE_UINT8 }, | |
528 | { "uint16", TDESC_TYPE_UINT16 }, | |
529 | { "uint32", TDESC_TYPE_UINT32 }, | |
530 | { "uint64", TDESC_TYPE_UINT64 }, | |
531 | { "uint128", TDESC_TYPE_UINT128 }, | |
532 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
533 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
534 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
535 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 536 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 537 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 538 | }; |
81adfced | 539 | |
81516450 DE |
540 | /* Lookup a predefined type. */ |
541 | ||
542 | static struct tdesc_type * | |
543 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
544 | { | |
545 | int ix; | |
546 | struct tdesc_type *type; | |
547 | ||
548 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
549 | if (tdesc_predefined_types[ix].kind == kind) | |
550 | return &tdesc_predefined_types[ix]; | |
551 | ||
552 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
553 | } | |
554 | ||
123dc839 DJ |
555 | /* Return the type associated with ID in the context of FEATURE, or |
556 | NULL if none. */ | |
557 | ||
ad068eab | 558 | struct tdesc_type * |
123dc839 DJ |
559 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
560 | { | |
561 | int ix; | |
ad068eab | 562 | struct tdesc_type *type; |
123dc839 DJ |
563 | |
564 | /* First try target-defined types. */ | |
ad068eab UW |
565 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
566 | if (strcmp (type->name, id) == 0) | |
567 | return type; | |
123dc839 | 568 | |
81adfced DJ |
569 | /* Next try the predefined types. */ |
570 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
571 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 572 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
573 | |
574 | return NULL; | |
575 | } | |
ad068eab | 576 | |
9fd3625f L |
577 | /* Lookup type associated with ID. */ |
578 | ||
579 | struct type * | |
580 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
581 | { | |
582 | struct tdesc_arch_reg *reg; | |
583 | struct tdesc_arch_data *data; | |
584 | int i, num_regs; | |
585 | ||
19ba03f4 | 586 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
9fd3625f L |
587 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); |
588 | for (i = 0; i < num_regs; i++) | |
589 | { | |
590 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); | |
591 | if (reg->reg | |
592 | && reg->reg->tdesc_type | |
593 | && reg->type | |
594 | && strcmp (id, reg->reg->tdesc_type->name) == 0) | |
595 | return reg->type; | |
596 | } | |
597 | ||
598 | return NULL; | |
599 | } | |
600 | ||
ad068eab UW |
601 | /* Construct, if necessary, and return the GDB type implementing target |
602 | type TDESC_TYPE for architecture GDBARCH. */ | |
603 | ||
604 | static struct type * | |
605 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
606 | { | |
9fd3625f L |
607 | struct type *type; |
608 | ||
ad068eab UW |
609 | switch (tdesc_type->kind) |
610 | { | |
611 | /* Predefined types. */ | |
81516450 DE |
612 | case TDESC_TYPE_BOOL: |
613 | return builtin_type (gdbarch)->builtin_bool; | |
614 | ||
ad068eab | 615 | case TDESC_TYPE_INT8: |
df4df182 | 616 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
617 | |
618 | case TDESC_TYPE_INT16: | |
df4df182 | 619 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
620 | |
621 | case TDESC_TYPE_INT32: | |
df4df182 | 622 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
623 | |
624 | case TDESC_TYPE_INT64: | |
df4df182 | 625 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
626 | |
627 | case TDESC_TYPE_INT128: | |
df4df182 | 628 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
629 | |
630 | case TDESC_TYPE_UINT8: | |
df4df182 | 631 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
632 | |
633 | case TDESC_TYPE_UINT16: | |
df4df182 | 634 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
635 | |
636 | case TDESC_TYPE_UINT32: | |
df4df182 | 637 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
638 | |
639 | case TDESC_TYPE_UINT64: | |
df4df182 | 640 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
641 | |
642 | case TDESC_TYPE_UINT128: | |
df4df182 | 643 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
644 | |
645 | case TDESC_TYPE_CODE_PTR: | |
646 | return builtin_type (gdbarch)->builtin_func_ptr; | |
647 | ||
648 | case TDESC_TYPE_DATA_PTR: | |
649 | return builtin_type (gdbarch)->builtin_data_ptr; | |
650 | ||
9fd3625f L |
651 | default: |
652 | break; | |
653 | } | |
654 | ||
655 | type = tdesc_find_type (gdbarch, tdesc_type->name); | |
656 | if (type) | |
657 | return type; | |
658 | ||
659 | switch (tdesc_type->kind) | |
660 | { | |
ad068eab | 661 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 662 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 663 | floatformats_ieee_single); |
ad068eab UW |
664 | |
665 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 666 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 667 | floatformats_ieee_double); |
ad068eab UW |
668 | |
669 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 670 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 671 | floatformats_arm_ext); |
ad068eab | 672 | |
9fd3625f L |
673 | case TDESC_TYPE_I387_EXT: |
674 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
675 | floatformats_i387_ext); | |
676 | ||
ad068eab UW |
677 | /* Types defined by a target feature. */ |
678 | case TDESC_TYPE_VECTOR: | |
679 | { | |
680 | struct type *type, *field_type; | |
681 | ||
682 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
683 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
684 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
685 | ||
686 | return type; | |
687 | } | |
688 | ||
f5dff777 DJ |
689 | case TDESC_TYPE_STRUCT: |
690 | { | |
691 | struct type *type, *field_type; | |
692 | struct tdesc_type_field *f; | |
693 | int ix; | |
694 | ||
695 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); | |
696 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
697 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
698 | ||
699 | for (ix = 0; | |
700 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
701 | ix++) | |
702 | { | |
81516450 | 703 | if (f->start != -1 && f->end != -1) |
f5dff777 DJ |
704 | { |
705 | /* Bitfield. */ | |
706 | struct field *fld; | |
707 | struct type *field_type; | |
708 | int bitsize, total_size; | |
709 | ||
81516450 | 710 | /* This invariant should be preserved while creating types. */ |
f5dff777 | 711 | gdb_assert (tdesc_type->u.u.size != 0); |
81516450 DE |
712 | if (f->type != NULL) |
713 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
714 | else if (tdesc_type->u.u.size > 4) | |
f5dff777 DJ |
715 | field_type = builtin_type (gdbarch)->builtin_uint64; |
716 | else | |
717 | field_type = builtin_type (gdbarch)->builtin_uint32; | |
718 | ||
719 | fld = append_composite_type_field_raw (type, xstrdup (f->name), | |
720 | field_type); | |
721 | ||
722 | /* For little-endian, BITPOS counts from the LSB of | |
723 | the structure and marks the LSB of the field. For | |
724 | big-endian, BITPOS counts from the MSB of the | |
725 | structure and marks the MSB of the field. Either | |
726 | way, it is the number of bits to the "left" of the | |
727 | field. To calculate this in big-endian, we need | |
728 | the total size of the structure. */ | |
729 | bitsize = f->end - f->start + 1; | |
730 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; | |
731 | if (gdbarch_bits_big_endian (gdbarch)) | |
f41f5e61 | 732 | SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize); |
f5dff777 | 733 | else |
f41f5e61 | 734 | SET_FIELD_BITPOS (fld[0], f->start); |
f5dff777 DJ |
735 | FIELD_BITSIZE (fld[0]) = bitsize; |
736 | } | |
737 | else | |
738 | { | |
81516450 | 739 | gdb_assert (f->start == -1 && f->end == -1); |
f5dff777 DJ |
740 | field_type = tdesc_gdb_type (gdbarch, f->type); |
741 | append_composite_type_field (type, xstrdup (f->name), | |
742 | field_type); | |
743 | } | |
744 | } | |
745 | ||
746 | if (tdesc_type->u.u.size != 0) | |
747 | TYPE_LENGTH (type) = tdesc_type->u.u.size; | |
748 | return type; | |
749 | } | |
750 | ||
ad068eab UW |
751 | case TDESC_TYPE_UNION: |
752 | { | |
753 | struct type *type, *field_type; | |
754 | struct tdesc_type_field *f; | |
755 | int ix; | |
756 | ||
e9bb382b | 757 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
ad068eab UW |
758 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
759 | ||
760 | for (ix = 0; | |
761 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
762 | ix++) | |
763 | { | |
764 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
765 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
766 | ||
f5dff777 | 767 | /* If any of the children of a union are vectors, flag the |
ad068eab UW |
768 | union as a vector also. This allows e.g. a union of two |
769 | vector types to show up automatically in "info vector". */ | |
770 | if (TYPE_VECTOR (field_type)) | |
771 | TYPE_VECTOR (type) = 1; | |
772 | } | |
f5dff777 DJ |
773 | return type; |
774 | } | |
775 | ||
776 | case TDESC_TYPE_FLAGS: | |
777 | { | |
81516450 | 778 | struct tdesc_type_field *f; |
f5dff777 DJ |
779 | int ix; |
780 | ||
3494b66d | 781 | type = arch_flags_type (gdbarch, tdesc_type->name, |
81516450 DE |
782 | tdesc_type->u.u.size); |
783 | for (ix = 0; | |
784 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
785 | ix++) | |
786 | { | |
787 | struct type *field_type; | |
788 | int bitsize = f->end - f->start + 1; | |
789 | ||
790 | gdb_assert (f->type != NULL); | |
791 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
792 | append_flags_type_field (type, f->start, bitsize, | |
793 | field_type, f->name); | |
794 | } | |
795 | ||
796 | return type; | |
797 | } | |
798 | ||
799 | case TDESC_TYPE_ENUM: | |
800 | { | |
801 | struct tdesc_type_field *f; | |
802 | int ix; | |
803 | ||
804 | type = arch_type (gdbarch, TYPE_CODE_ENUM, | |
805 | tdesc_type->u.u.size, tdesc_type->name); | |
806 | TYPE_UNSIGNED (type) = 1; | |
f5dff777 | 807 | for (ix = 0; |
81516450 | 808 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
f5dff777 | 809 | ix++) |
81516450 DE |
810 | { |
811 | struct field *fld | |
812 | = append_composite_type_field_raw (type, xstrdup (f->name), | |
813 | NULL); | |
814 | ||
815 | SET_FIELD_BITPOS (fld[0], f->start); | |
816 | } | |
ad068eab UW |
817 | |
818 | return type; | |
819 | } | |
820 | } | |
821 | ||
822 | internal_error (__FILE__, __LINE__, | |
823 | "Type \"%s\" has an unknown kind %d", | |
824 | tdesc_type->name, tdesc_type->kind); | |
825 | } | |
123dc839 DJ |
826 | \f |
827 | ||
828 | /* Support for registers from target descriptions. */ | |
829 | ||
830 | /* Construct the per-gdbarch data. */ | |
831 | ||
832 | static void * | |
833 | tdesc_data_init (struct obstack *obstack) | |
834 | { | |
835 | struct tdesc_arch_data *data; | |
836 | ||
837 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
838 | return data; | |
839 | } | |
840 | ||
841 | /* Similar, but for the temporary copy used during architecture | |
842 | initialization. */ | |
843 | ||
844 | struct tdesc_arch_data * | |
845 | tdesc_data_alloc (void) | |
846 | { | |
41bf6aca | 847 | return XCNEW (struct tdesc_arch_data); |
123dc839 DJ |
848 | } |
849 | ||
850 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
851 | to be used (for instance if it was unsuitable for the | |
852 | architecture). */ | |
853 | ||
854 | void | |
855 | tdesc_data_cleanup (void *data_untyped) | |
856 | { | |
19ba03f4 | 857 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 858 | |
ad068eab | 859 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
860 | xfree (data); |
861 | } | |
862 | ||
863 | /* Search FEATURE for a register named NAME. */ | |
864 | ||
7cc46491 DJ |
865 | static struct tdesc_reg * |
866 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
867 | const char *name) | |
123dc839 DJ |
868 | { |
869 | int ixr; | |
870 | struct tdesc_reg *reg; | |
871 | ||
872 | for (ixr = 0; | |
873 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
874 | ixr++) | |
875 | if (strcasecmp (reg->name, name) == 0) | |
7cc46491 | 876 | return reg; |
123dc839 | 877 | |
7cc46491 DJ |
878 | return NULL; |
879 | } | |
880 | ||
881 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
882 | ||
883 | int | |
884 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
885 | struct tdesc_arch_data *data, | |
886 | int regno, const char *name) | |
887 | { | |
ad068eab | 888 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
889 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
890 | ||
891 | if (reg == NULL) | |
892 | return 0; | |
893 | ||
894 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
895 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
896 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
897 | ||
898 | arch_reg.reg = reg; | |
899 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 900 | return 1; |
123dc839 DJ |
901 | } |
902 | ||
58d6951d DJ |
903 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
904 | register number to it. */ | |
905 | ||
906 | int | |
907 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
908 | const char *name) | |
909 | { | |
910 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
911 | ||
912 | if (reg == NULL) | |
913 | return 0; | |
914 | ||
915 | return 1; | |
916 | } | |
917 | ||
7cc46491 DJ |
918 | /* Search FEATURE for a register whose name is in NAMES and assign |
919 | REGNO to it. */ | |
123dc839 DJ |
920 | |
921 | int | |
922 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
923 | struct tdesc_arch_data *data, | |
924 | int regno, const char *const names[]) | |
925 | { | |
926 | int i; | |
927 | ||
928 | for (i = 0; names[i] != NULL; i++) | |
929 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
930 | return 1; | |
931 | ||
932 | return 0; | |
933 | } | |
934 | ||
7cc46491 DJ |
935 | /* Search FEATURE for a register named NAME, and return its size in |
936 | bits. The register must exist. */ | |
937 | ||
938 | int | |
939 | tdesc_register_size (const struct tdesc_feature *feature, | |
940 | const char *name) | |
941 | { | |
942 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
943 | ||
944 | gdb_assert (reg != NULL); | |
945 | return reg->bitsize; | |
946 | } | |
947 | ||
123dc839 DJ |
948 | /* Look up a register by its GDB internal register number. */ |
949 | ||
ad068eab UW |
950 | static struct tdesc_arch_reg * |
951 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 952 | { |
123dc839 DJ |
953 | struct tdesc_arch_data *data; |
954 | ||
19ba03f4 | 955 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab UW |
956 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
957 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
958 | else |
959 | return NULL; | |
960 | } | |
961 | ||
ad068eab UW |
962 | static struct tdesc_reg * |
963 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
964 | { | |
965 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 966 | |
ad068eab UW |
967 | return reg? reg->reg : NULL; |
968 | } | |
969 | ||
f8b73d13 DJ |
970 | /* Return the name of register REGNO, from the target description or |
971 | from an architecture-provided pseudo_register_name method. */ | |
972 | ||
973 | const char * | |
d93859e2 | 974 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 975 | { |
d93859e2 UW |
976 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
977 | int num_regs = gdbarch_num_regs (gdbarch); | |
978 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
979 | |
980 | if (reg != NULL) | |
981 | return reg->name; | |
982 | ||
983 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
984 | { | |
19ba03f4 SM |
985 | struct tdesc_arch_data *data |
986 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 987 | |
123dc839 | 988 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 989 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
990 | } |
991 | ||
992 | return ""; | |
993 | } | |
994 | ||
58d6951d | 995 | struct type * |
123dc839 DJ |
996 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
997 | { | |
ad068eab UW |
998 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
999 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1000 | int num_regs = gdbarch_num_regs (gdbarch); |
1001 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1002 | ||
1003 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1004 | { | |
19ba03f4 SM |
1005 | struct tdesc_arch_data *data |
1006 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1007 | |
123dc839 DJ |
1008 | gdb_assert (data->pseudo_register_type != NULL); |
1009 | return data->pseudo_register_type (gdbarch, regno); | |
1010 | } | |
1011 | ||
1012 | if (reg == NULL) | |
1013 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1014 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1015 | |
ad068eab | 1016 | if (arch_reg->type == NULL) |
123dc839 | 1017 | { |
ad068eab UW |
1018 | /* First check for a predefined or target defined type. */ |
1019 | if (reg->tdesc_type) | |
1020 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
1021 | ||
1022 | /* Next try size-sensitive type shortcuts. */ | |
1023 | else if (strcmp (reg->type, "float") == 0) | |
1024 | { | |
1025 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1026 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1027 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1028 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1029 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1030 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1031 | else | |
1032 | { | |
1033 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1034 | reg->name, reg->bitsize); | |
1035 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1036 | } | |
1037 | } | |
1038 | else if (strcmp (reg->type, "int") == 0) | |
1039 | { | |
1040 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1041 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1042 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1043 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1044 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1045 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1046 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1047 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1048 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1049 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1050 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1051 | /* A bit desperate by this point... */ |
ad068eab UW |
1052 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1053 | else | |
1054 | { | |
1055 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1056 | reg->name, reg->bitsize); | |
1057 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1058 | } | |
1059 | } | |
1060 | ||
1061 | if (arch_reg->type == NULL) | |
1062 | internal_error (__FILE__, __LINE__, | |
1063 | "Register \"%s\" has an unknown type \"%s\"", | |
1064 | reg->name, reg->type); | |
123dc839 | 1065 | } |
123dc839 | 1066 | |
ad068eab | 1067 | return arch_reg->type; |
123dc839 DJ |
1068 | } |
1069 | ||
1070 | static int | |
1071 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1072 | { | |
1073 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1074 | ||
1075 | if (reg != NULL) | |
1076 | return reg->target_regnum; | |
1077 | else | |
1078 | return -1; | |
1079 | } | |
1080 | ||
1081 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
1082 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
1083 | Unlike a gdbarch register_reggroup_p method, this function will |
1084 | return -1 if it does not know; the caller should handle registers | |
1085 | with no specified group. | |
123dc839 DJ |
1086 | |
1087 | Arbitrary strings (other than "general", "float", and "vector") | |
1088 | from the description are not used; they cause the register to be | |
1089 | displayed in "info all-registers" but excluded from "info | |
1090 | registers" et al. The names of containing features are also not | |
1091 | used. This might be extended to display registers in some more | |
1092 | useful groupings. | |
1093 | ||
1094 | The save-restore flag is also implemented here. */ | |
1095 | ||
f8b73d13 DJ |
1096 | int |
1097 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1098 | struct reggroup *reggroup) | |
123dc839 | 1099 | { |
123dc839 DJ |
1100 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1101 | ||
123dc839 DJ |
1102 | if (reg != NULL && reg->group != NULL) |
1103 | { | |
1104 | int general_p = 0, float_p = 0, vector_p = 0; | |
1105 | ||
1106 | if (strcmp (reg->group, "general") == 0) | |
1107 | general_p = 1; | |
1108 | else if (strcmp (reg->group, "float") == 0) | |
1109 | float_p = 1; | |
1110 | else if (strcmp (reg->group, "vector") == 0) | |
1111 | vector_p = 1; | |
1112 | ||
1113 | if (reggroup == float_reggroup) | |
1114 | return float_p; | |
1115 | ||
1116 | if (reggroup == vector_reggroup) | |
1117 | return vector_p; | |
1118 | ||
1119 | if (reggroup == general_reggroup) | |
1120 | return general_p; | |
1121 | } | |
1122 | ||
1123 | if (reg != NULL | |
1124 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1125 | return reg->save_restore; | |
1126 | ||
f8b73d13 DJ |
1127 | return -1; |
1128 | } | |
1129 | ||
1130 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1131 | group specified go to the default reggroup function and are handled | |
1132 | by type. */ | |
1133 | ||
1134 | static int | |
1135 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1136 | struct reggroup *reggroup) | |
1137 | { | |
1138 | int num_regs = gdbarch_num_regs (gdbarch); | |
1139 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1140 | int ret; | |
1141 | ||
1142 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1143 | { | |
19ba03f4 SM |
1144 | struct tdesc_arch_data *data |
1145 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1146 | |
58d6951d DJ |
1147 | if (data->pseudo_register_reggroup_p != NULL) |
1148 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1149 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1150 | } |
1151 | ||
1152 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1153 | if (ret != -1) | |
1154 | return ret; | |
1155 | ||
123dc839 DJ |
1156 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1157 | } | |
1158 | ||
1159 | /* Record architecture-specific functions to call for pseudo-register | |
1160 | support. */ | |
1161 | ||
1162 | void | |
1163 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1164 | gdbarch_register_name_ftype *pseudo_name) | |
1165 | { | |
19ba03f4 SM |
1166 | struct tdesc_arch_data *data |
1167 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1168 | |
1169 | data->pseudo_register_name = pseudo_name; | |
1170 | } | |
1171 | ||
1172 | void | |
1173 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1174 | gdbarch_register_type_ftype *pseudo_type) | |
1175 | { | |
19ba03f4 SM |
1176 | struct tdesc_arch_data *data |
1177 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1178 | |
1179 | data->pseudo_register_type = pseudo_type; | |
1180 | } | |
1181 | ||
1182 | void | |
1183 | set_tdesc_pseudo_register_reggroup_p | |
1184 | (struct gdbarch *gdbarch, | |
1185 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1186 | { | |
19ba03f4 SM |
1187 | struct tdesc_arch_data *data |
1188 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1189 | |
1190 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1191 | } | |
1192 | ||
1193 | /* Update GDBARCH to use the target description for registers. */ | |
1194 | ||
1195 | void | |
1196 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1197 | const struct target_desc *target_desc, |
123dc839 DJ |
1198 | struct tdesc_arch_data *early_data) |
1199 | { | |
1200 | int num_regs = gdbarch_num_regs (gdbarch); | |
c6913b7d | 1201 | int ixf, ixr; |
123dc839 DJ |
1202 | struct tdesc_feature *feature; |
1203 | struct tdesc_reg *reg; | |
1204 | struct tdesc_arch_data *data; | |
ad068eab | 1205 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
1206 | htab_t reg_hash; |
1207 | ||
123dc839 DJ |
1208 | /* We can't use the description for registers if it doesn't describe |
1209 | any. This function should only be called after validating | |
1210 | registers, so the caller should know that registers are | |
1211 | included. */ | |
1212 | gdb_assert (tdesc_has_registers (target_desc)); | |
1213 | ||
19ba03f4 | 1214 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1215 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
1216 | xfree (early_data); |
1217 | ||
1218 | /* Build up a set of all registers, so that we can assign register | |
1219 | numbers where needed. The hash table expands as necessary, so | |
1220 | the initial size is arbitrary. */ | |
1221 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
1222 | for (ixf = 0; | |
1223 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1224 | ixf++) | |
1225 | for (ixr = 0; | |
1226 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1227 | ixr++) | |
1228 | { | |
1229 | void **slot = htab_find_slot (reg_hash, reg, INSERT); | |
1230 | ||
1231 | *slot = reg; | |
1232 | } | |
1233 | ||
1234 | /* Remove any registers which were assigned numbers by the | |
1235 | architecture. */ | |
ad068eab UW |
1236 | for (ixr = 0; |
1237 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); | |
1238 | ixr++) | |
1239 | if (arch_reg->reg) | |
1240 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
1241 | |
1242 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1243 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1244 | Iterate over the features, not the hash table, so that the order |
1245 | matches that in the target description. */ | |
1246 | ||
ad068eab UW |
1247 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1248 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1249 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1250 | for (ixf = 0; |
1251 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1252 | ixf++) | |
1253 | for (ixr = 0; | |
1254 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1255 | ixr++) | |
1256 | if (htab_find (reg_hash, reg) != NULL) | |
1257 | { | |
ad068eab UW |
1258 | new_arch_reg.reg = reg; |
1259 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1260 | num_regs++; |
1261 | } | |
1262 | ||
1263 | htab_delete (reg_hash); | |
1264 | ||
1265 | /* Update the architecture. */ | |
1266 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1267 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1268 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1269 | set_gdbarch_remote_register_number (gdbarch, | |
1270 | tdesc_remote_register_number); | |
1271 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1272 | } | |
1273 | \f | |
1274 | ||
424163ea DJ |
1275 | /* Methods for constructing a target description. */ |
1276 | ||
123dc839 DJ |
1277 | static void |
1278 | tdesc_free_reg (struct tdesc_reg *reg) | |
1279 | { | |
1280 | xfree (reg->name); | |
1281 | xfree (reg->type); | |
1282 | xfree (reg->group); | |
1283 | xfree (reg); | |
1284 | } | |
1285 | ||
1286 | void | |
1287 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1288 | int regnum, int save_restore, const char *group, | |
1289 | int bitsize, const char *type) | |
1290 | { | |
41bf6aca | 1291 | struct tdesc_reg *reg = XCNEW (struct tdesc_reg); |
123dc839 DJ |
1292 | |
1293 | reg->name = xstrdup (name); | |
1294 | reg->target_regnum = regnum; | |
1295 | reg->save_restore = save_restore; | |
1296 | reg->group = group ? xstrdup (group) : NULL; | |
1297 | reg->bitsize = bitsize; | |
c8c12293 | 1298 | reg->type = type ? xstrdup (type) : xstrdup ("<unknown>"); |
123dc839 DJ |
1299 | |
1300 | /* If the register's type is target-defined, look it up now. We may not | |
1301 | have easy access to the containing feature when we want it later. */ | |
ad068eab | 1302 | reg->tdesc_type = tdesc_named_type (feature, reg->type); |
123dc839 DJ |
1303 | |
1304 | VEC_safe_push (tdesc_reg_p, feature->registers, reg); | |
1305 | } | |
1306 | ||
81516450 DE |
1307 | /* Subroutine of tdesc_free_feature to simplify it. |
1308 | Note: We do not want to free any referenced types here (e.g., types of | |
1309 | fields of a struct). All types of a feature are recorded in | |
1310 | feature->types and are freed that way. */ | |
1311 | ||
ad068eab UW |
1312 | static void |
1313 | tdesc_free_type (struct tdesc_type *type) | |
1314 | { | |
ad068eab UW |
1315 | switch (type->kind) |
1316 | { | |
f5dff777 | 1317 | case TDESC_TYPE_STRUCT: |
ad068eab | 1318 | case TDESC_TYPE_UNION: |
81516450 DE |
1319 | case TDESC_TYPE_FLAGS: |
1320 | case TDESC_TYPE_ENUM: | |
ad068eab UW |
1321 | { |
1322 | struct tdesc_type_field *f; | |
1323 | int ix; | |
1324 | ||
1325 | for (ix = 0; | |
1326 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix, f); | |
1327 | ix++) | |
1328 | xfree (f->name); | |
1329 | ||
1330 | VEC_free (tdesc_type_field, type->u.u.fields); | |
1331 | } | |
1332 | break; | |
1333 | ||
1334 | default: | |
1335 | break; | |
1336 | } | |
1337 | ||
1338 | xfree (type->name); | |
1339 | xfree (type); | |
1340 | } | |
1341 | ||
1342 | struct tdesc_type * | |
1343 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1344 | struct tdesc_type *field_type, int count) | |
1345 | { | |
41bf6aca | 1346 | struct tdesc_type *type = XCNEW (struct tdesc_type); |
ad068eab UW |
1347 | |
1348 | type->name = xstrdup (name); | |
1349 | type->kind = TDESC_TYPE_VECTOR; | |
1350 | type->u.v.type = field_type; | |
1351 | type->u.v.count = count; | |
1352 | ||
1353 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1354 | return type; | |
1355 | } | |
1356 | ||
f5dff777 DJ |
1357 | struct tdesc_type * |
1358 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
1359 | { | |
41bf6aca | 1360 | struct tdesc_type *type = XCNEW (struct tdesc_type); |
f5dff777 DJ |
1361 | |
1362 | type->name = xstrdup (name); | |
1363 | type->kind = TDESC_TYPE_STRUCT; | |
1364 | ||
1365 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1366 | return type; | |
1367 | } | |
1368 | ||
1369 | /* Set the total length of TYPE. Structs which contain bitfields may | |
1370 | omit the reserved bits, so the end of the last field may not | |
1371 | suffice. */ | |
1372 | ||
1373 | void | |
54157a25 | 1374 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
f5dff777 DJ |
1375 | { |
1376 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1377 | gdb_assert (size > 0); |
f5dff777 DJ |
1378 | type->u.u.size = size; |
1379 | } | |
1380 | ||
ad068eab UW |
1381 | struct tdesc_type * |
1382 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1383 | { | |
41bf6aca | 1384 | struct tdesc_type *type = XCNEW (struct tdesc_type); |
ad068eab UW |
1385 | |
1386 | type->name = xstrdup (name); | |
1387 | type->kind = TDESC_TYPE_UNION; | |
1388 | ||
1389 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1390 | return type; | |
1391 | } | |
1392 | ||
f5dff777 DJ |
1393 | struct tdesc_type * |
1394 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
54157a25 | 1395 | int size) |
f5dff777 | 1396 | { |
41bf6aca | 1397 | struct tdesc_type *type = XCNEW (struct tdesc_type); |
f5dff777 | 1398 | |
54157a25 DE |
1399 | gdb_assert (size > 0); |
1400 | ||
f5dff777 DJ |
1401 | type->name = xstrdup (name); |
1402 | type->kind = TDESC_TYPE_FLAGS; | |
81516450 | 1403 | type->u.u.size = size; |
f5dff777 DJ |
1404 | |
1405 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1406 | return type; | |
1407 | } | |
1408 | ||
81516450 DE |
1409 | struct tdesc_type * |
1410 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
1411 | int size) | |
1412 | { | |
1413 | struct tdesc_type *type = XCNEW (struct tdesc_type); | |
1414 | ||
1415 | gdb_assert (size > 0); | |
1416 | ||
1417 | type->name = xstrdup (name); | |
1418 | type->kind = TDESC_TYPE_ENUM; | |
1419 | type->u.u.size = size; | |
1420 | ||
1421 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1422 | return type; | |
1423 | } | |
1424 | ||
1425 | /* Add a new field to TYPE. */ | |
f5dff777 | 1426 | |
ad068eab UW |
1427 | void |
1428 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1429 | struct tdesc_type *field_type) | |
1430 | { | |
1431 | struct tdesc_type_field f = { 0 }; | |
1432 | ||
f5dff777 DJ |
1433 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1434 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab UW |
1435 | |
1436 | f.name = xstrdup (field_name); | |
1437 | f.type = field_type; | |
81516450 DE |
1438 | /* Initialize these values so we know this is not a bit-field |
1439 | when we print-c-tdesc. */ | |
1440 | f.start = -1; | |
1441 | f.end = -1; | |
ad068eab UW |
1442 | |
1443 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1444 | } | |
1445 | ||
81516450 | 1446 | /* Add a new typed bitfield to TYPE. */ |
f5dff777 DJ |
1447 | |
1448 | void | |
81516450 DE |
1449 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
1450 | int start, int end, struct tdesc_type *field_type) | |
f5dff777 DJ |
1451 | { |
1452 | struct tdesc_type_field f = { 0 }; | |
1453 | ||
81516450 DE |
1454 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1455 | || type->kind == TDESC_TYPE_FLAGS); | |
1456 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 DJ |
1457 | |
1458 | f.name = xstrdup (field_name); | |
1459 | f.start = start; | |
1460 | f.end = end; | |
81516450 | 1461 | f.type = field_type; |
f5dff777 DJ |
1462 | |
1463 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1464 | } | |
1465 | ||
81516450 DE |
1466 | /* Add a new untyped bitfield to TYPE. |
1467 | Untyped bitfields become either uint32 or uint64 depending on the size | |
1468 | of the underlying type. */ | |
1469 | ||
1470 | void | |
1471 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, | |
1472 | int start, int end) | |
1473 | { | |
1474 | struct tdesc_type *field_type; | |
1475 | ||
1476 | gdb_assert (start >= 0 && end >= start); | |
1477 | ||
1478 | if (type->u.u.size > 4) | |
1479 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
1480 | else | |
1481 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1482 | ||
1483 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1484 | } | |
1485 | ||
1486 | /* A flag is just a typed(bool) single-bit bitfield. | |
1487 | This function is kept to minimize changes in generated files. */ | |
1488 | ||
f5dff777 DJ |
1489 | void |
1490 | tdesc_add_flag (struct tdesc_type *type, int start, | |
1491 | const char *flag_name) | |
1492 | { | |
81516450 | 1493 | struct tdesc_type_field f = { 0 }; |
f5dff777 | 1494 | |
81516450 DE |
1495 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1496 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 DJ |
1497 | |
1498 | f.name = xstrdup (flag_name); | |
1499 | f.start = start; | |
81516450 DE |
1500 | f.end = start; |
1501 | f.type = tdesc_predefined_type (TDESC_TYPE_BOOL); | |
f5dff777 | 1502 | |
81516450 DE |
1503 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
1504 | } | |
1505 | ||
1506 | void | |
1507 | tdesc_add_enum_value (struct tdesc_type *type, int value, | |
1508 | const char *name) | |
1509 | { | |
1510 | struct tdesc_type_field f = { 0 }; | |
1511 | ||
1512 | gdb_assert (type->kind == TDESC_TYPE_ENUM); | |
1513 | ||
1514 | f.name = xstrdup (name); | |
1515 | f.start = value; | |
1516 | f.end = -1; | |
1517 | f.type = tdesc_predefined_type (TDESC_TYPE_INT32); | |
1518 | ||
1519 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
f5dff777 DJ |
1520 | } |
1521 | ||
123dc839 DJ |
1522 | static void |
1523 | tdesc_free_feature (struct tdesc_feature *feature) | |
1524 | { | |
1525 | struct tdesc_reg *reg; | |
ad068eab | 1526 | struct tdesc_type *type; |
123dc839 DJ |
1527 | int ix; |
1528 | ||
1529 | for (ix = 0; VEC_iterate (tdesc_reg_p, feature->registers, ix, reg); ix++) | |
1530 | tdesc_free_reg (reg); | |
1531 | VEC_free (tdesc_reg_p, feature->registers); | |
1532 | ||
ad068eab UW |
1533 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
1534 | tdesc_free_type (type); | |
1535 | VEC_free (tdesc_type_p, feature->types); | |
123dc839 DJ |
1536 | |
1537 | xfree (feature->name); | |
1538 | xfree (feature); | |
1539 | } | |
1540 | ||
1541 | struct tdesc_feature * | |
1542 | tdesc_create_feature (struct target_desc *tdesc, const char *name) | |
1543 | { | |
41bf6aca | 1544 | struct tdesc_feature *new_feature = XCNEW (struct tdesc_feature); |
123dc839 DJ |
1545 | |
1546 | new_feature->name = xstrdup (name); | |
1547 | ||
1548 | VEC_safe_push (tdesc_feature_p, tdesc->features, new_feature); | |
1549 | return new_feature; | |
1550 | } | |
1551 | ||
424163ea DJ |
1552 | struct target_desc * |
1553 | allocate_target_description (void) | |
1554 | { | |
41bf6aca | 1555 | return XCNEW (struct target_desc); |
424163ea | 1556 | } |
29709017 | 1557 | |
23181151 DJ |
1558 | static void |
1559 | free_target_description (void *arg) | |
1560 | { | |
19ba03f4 | 1561 | struct target_desc *target_desc = (struct target_desc *) arg; |
123dc839 | 1562 | struct tdesc_feature *feature; |
23181151 DJ |
1563 | struct property *prop; |
1564 | int ix; | |
1565 | ||
123dc839 DJ |
1566 | for (ix = 0; |
1567 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
1568 | ix++) | |
1569 | tdesc_free_feature (feature); | |
1570 | VEC_free (tdesc_feature_p, target_desc->features); | |
1571 | ||
23181151 DJ |
1572 | for (ix = 0; |
1573 | VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1574 | ix++) | |
1575 | { | |
1576 | xfree (prop->key); | |
1577 | xfree (prop->value); | |
1578 | } | |
1579 | VEC_free (property_s, target_desc->properties); | |
1580 | ||
e35359c5 UW |
1581 | VEC_free (arch_p, target_desc->compatible); |
1582 | ||
23181151 DJ |
1583 | xfree (target_desc); |
1584 | } | |
1585 | ||
1586 | struct cleanup * | |
1587 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1588 | { | |
1589 | return make_cleanup (free_target_description, target_desc); | |
1590 | } | |
1591 | ||
e35359c5 UW |
1592 | void |
1593 | tdesc_add_compatible (struct target_desc *target_desc, | |
1594 | const struct bfd_arch_info *compatible) | |
1595 | { | |
1596 | const struct bfd_arch_info *compat; | |
1597 | int ix; | |
1598 | ||
1599 | /* If this instance of GDB is compiled without BFD support for the | |
1600 | compatible architecture, simply ignore it -- we would not be able | |
1601 | to handle it anyway. */ | |
1602 | if (compatible == NULL) | |
1603 | return; | |
1604 | ||
1605 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
1606 | ix++) | |
1607 | if (compat == compatible) | |
1608 | internal_error (__FILE__, __LINE__, | |
1609 | _("Attempted to add duplicate " | |
1610 | "compatible architecture \"%s\""), | |
1611 | compatible->printable_name); | |
1612 | ||
1613 | VEC_safe_push (arch_p, target_desc->compatible, compatible); | |
1614 | } | |
1615 | ||
29709017 DJ |
1616 | void |
1617 | set_tdesc_property (struct target_desc *target_desc, | |
1618 | const char *key, const char *value) | |
1619 | { | |
1620 | struct property *prop, new_prop; | |
1621 | int ix; | |
1622 | ||
1623 | gdb_assert (key != NULL && value != NULL); | |
1624 | ||
1625 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1626 | ix++) | |
1627 | if (strcmp (prop->key, key) == 0) | |
1628 | internal_error (__FILE__, __LINE__, | |
1629 | _("Attempted to add duplicate property \"%s\""), key); | |
1630 | ||
23181151 DJ |
1631 | new_prop.key = xstrdup (key); |
1632 | new_prop.value = xstrdup (value); | |
29709017 DJ |
1633 | VEC_safe_push (property_s, target_desc->properties, &new_prop); |
1634 | } | |
23181151 DJ |
1635 | |
1636 | void | |
1637 | set_tdesc_architecture (struct target_desc *target_desc, | |
1638 | const struct bfd_arch_info *arch) | |
1639 | { | |
1640 | target_desc->arch = arch; | |
1641 | } | |
08d16641 PA |
1642 | |
1643 | void | |
1644 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1645 | { | |
1646 | target_desc->osabi = osabi; | |
1647 | } | |
23181151 DJ |
1648 | \f |
1649 | ||
1650 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1651 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1652 | ||
1653 | /* Helper functions for the CLI commands. */ | |
1654 | ||
1655 | static void | |
1656 | set_tdesc_cmd (char *args, int from_tty) | |
1657 | { | |
635c7e8a | 1658 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1659 | } |
1660 | ||
1661 | static void | |
1662 | show_tdesc_cmd (char *args, int from_tty) | |
1663 | { | |
1664 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1665 | } | |
1666 | ||
1667 | static void | |
1668 | unset_tdesc_cmd (char *args, int from_tty) | |
1669 | { | |
635c7e8a | 1670 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1671 | } |
1672 | ||
1673 | static void | |
1674 | set_tdesc_filename_cmd (char *args, int from_tty, | |
1675 | struct cmd_list_element *c) | |
1676 | { | |
6ecd4729 PA |
1677 | xfree (target_description_filename); |
1678 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1679 | ||
23181151 DJ |
1680 | target_clear_description (); |
1681 | target_find_description (); | |
1682 | } | |
1683 | ||
1684 | static void | |
1685 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1686 | struct cmd_list_element *c, | |
1687 | const char *value) | |
1688 | { | |
6ecd4729 PA |
1689 | value = target_description_filename; |
1690 | ||
23181151 | 1691 | if (value != NULL && *value != '\0') |
3e43a32a | 1692 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1693 | value); |
1694 | else | |
3e43a32a MS |
1695 | printf_filtered (_("The target description will be " |
1696 | "read from the target.\n")); | |
23181151 DJ |
1697 | } |
1698 | ||
1699 | static void | |
1700 | unset_tdesc_filename_cmd (char *args, int from_tty) | |
1701 | { | |
1702 | xfree (target_description_filename); | |
1703 | target_description_filename = NULL; | |
1704 | target_clear_description (); | |
1705 | target_find_description (); | |
1706 | } | |
1707 | ||
81adfced DJ |
1708 | static void |
1709 | maint_print_c_tdesc_cmd (char *args, int from_tty) | |
1710 | { | |
1711 | const struct target_desc *tdesc; | |
e35359c5 | 1712 | const struct bfd_arch_info *compatible; |
81adfced DJ |
1713 | const char *filename, *inp; |
1714 | char *function, *outp; | |
1715 | struct property *prop; | |
1716 | struct tdesc_feature *feature; | |
1717 | struct tdesc_reg *reg; | |
ad068eab UW |
1718 | struct tdesc_type *type; |
1719 | struct tdesc_type_field *f; | |
81adfced | 1720 | int ix, ix2, ix3; |
4e2f8df6 | 1721 | int printed_field_type = 0; |
81adfced DJ |
1722 | |
1723 | /* Use the global target-supplied description, not the current | |
1724 | architecture's. This lets a GDB for one architecture generate C | |
1725 | for another architecture's description, even though the gdbarch | |
1726 | initialization code will reject the new description. */ | |
1727 | tdesc = current_target_desc; | |
1728 | if (tdesc == NULL) | |
1729 | error (_("There is no target description to print.")); | |
1730 | ||
1731 | if (target_description_filename == NULL) | |
1732 | error (_("The current target description did not come from an XML file.")); | |
1733 | ||
1734 | filename = lbasename (target_description_filename); | |
224c3ddb | 1735 | function = (char *) alloca (strlen (filename) + 1); |
81adfced DJ |
1736 | for (inp = filename, outp = function; *inp != '\0'; inp++) |
1737 | if (*inp == '.') | |
1738 | break; | |
1739 | else if (*inp == '-') | |
1740 | *outp++ = '_'; | |
1741 | else | |
1742 | *outp++ = *inp; | |
1743 | *outp = '\0'; | |
1744 | ||
1745 | /* Standard boilerplate. */ | |
c4bfde41 JK |
1746 | printf_unfiltered ("/* THIS FILE IS GENERATED. " |
1747 | "-*- buffer-read-only: t -*- vi" | |
1748 | ":set ro:\n"); | |
1749 | printf_unfiltered (" Original: %s */\n\n", filename); | |
81adfced | 1750 | printf_unfiltered ("#include \"defs.h\"\n"); |
c3f08eb7 | 1751 | printf_unfiltered ("#include \"osabi.h\"\n"); |
81adfced DJ |
1752 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); |
1753 | printf_unfiltered ("\n"); | |
1754 | ||
1755 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", function); | |
1756 | printf_unfiltered ("static void\n"); | |
1757 | printf_unfiltered ("initialize_tdesc_%s (void)\n", function); | |
1758 | printf_unfiltered ("{\n"); | |
1759 | printf_unfiltered | |
1760 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1761 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
4e2f8df6 SDJ |
1762 | |
1763 | /* Now we do some "filtering" in order to know which variables to | |
1764 | declare. This is needed because otherwise we would declare unused | |
1765 | variables `field_type' and `type'. */ | |
1766 | for (ix = 0; | |
1767 | VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature); | |
1768 | ix++) | |
1769 | { | |
1770 | int printed_desc_type = 0; | |
1771 | ||
1772 | for (ix2 = 0; | |
1773 | VEC_iterate (tdesc_type_p, feature->types, ix2, type); | |
1774 | ix2++) | |
1775 | { | |
1776 | if (!printed_field_type) | |
1777 | { | |
1778 | printf_unfiltered (" struct tdesc_type *field_type;\n"); | |
1779 | printed_field_type = 1; | |
1780 | } | |
1781 | ||
81516450 DE |
1782 | if ((type->kind == TDESC_TYPE_UNION |
1783 | || type->kind == TDESC_TYPE_STRUCT | |
1784 | || type->kind == TDESC_TYPE_FLAGS | |
1785 | || type->kind == TDESC_TYPE_ENUM) | |
1786 | && VEC_length (tdesc_type_field, type->u.u.fields) > 0) | |
4e2f8df6 SDJ |
1787 | { |
1788 | printf_unfiltered (" struct tdesc_type *type;\n"); | |
1789 | printed_desc_type = 1; | |
1790 | break; | |
1791 | } | |
1792 | } | |
1793 | ||
1794 | if (printed_desc_type) | |
1795 | break; | |
1796 | } | |
1797 | ||
81adfced DJ |
1798 | printf_unfiltered ("\n"); |
1799 | ||
1800 | if (tdesc_architecture (tdesc) != NULL) | |
1801 | { | |
1802 | printf_unfiltered | |
1803 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1804 | tdesc_architecture (tdesc)->printable_name); | |
1805 | printf_unfiltered ("\n"); | |
1806 | } | |
1807 | ||
c3f08eb7 L |
1808 | if (tdesc_osabi (tdesc) > GDB_OSABI_UNKNOWN |
1809 | && tdesc_osabi (tdesc) < GDB_OSABI_INVALID) | |
1810 | { | |
1811 | printf_unfiltered | |
1812 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1813 | gdbarch_osabi_name (tdesc_osabi (tdesc))); | |
1814 | printf_unfiltered ("\n"); | |
1815 | } | |
1816 | ||
e35359c5 UW |
1817 | for (ix = 0; VEC_iterate (arch_p, tdesc->compatible, ix, compatible); |
1818 | ix++) | |
1819 | { | |
1820 | printf_unfiltered | |
1821 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1822 | compatible->printable_name); | |
1823 | } | |
1824 | if (ix) | |
1825 | printf_unfiltered ("\n"); | |
1826 | ||
81adfced DJ |
1827 | for (ix = 0; VEC_iterate (property_s, tdesc->properties, ix, prop); |
1828 | ix++) | |
1829 | { | |
1830 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1831 | prop->key, prop->value); | |
1832 | } | |
1833 | ||
1834 | for (ix = 0; | |
1835 | VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature); | |
1836 | ix++) | |
1837 | { | |
3e43a32a MS |
1838 | printf_unfiltered (" \ |
1839 | feature = tdesc_create_feature (result, \"%s\");\n", | |
81adfced DJ |
1840 | feature->name); |
1841 | ||
1842 | for (ix2 = 0; | |
ad068eab | 1843 | VEC_iterate (tdesc_type_p, feature->types, ix2, type); |
81adfced DJ |
1844 | ix2++) |
1845 | { | |
ad068eab | 1846 | switch (type->kind) |
81adfced | 1847 | { |
ad068eab | 1848 | case TDESC_TYPE_VECTOR: |
81adfced DJ |
1849 | printf_unfiltered |
1850 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1851 | type->u.v.type->name); |
81adfced | 1852 | printf_unfiltered |
ad068eab UW |
1853 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", |
1854 | type->name, type->u.v.count); | |
81adfced | 1855 | break; |
f92b06da | 1856 | case TDESC_TYPE_STRUCT: |
81516450 DE |
1857 | case TDESC_TYPE_FLAGS: |
1858 | if (type->kind == TDESC_TYPE_STRUCT) | |
1859 | { | |
1860 | printf_unfiltered | |
1861 | (" type = tdesc_create_struct (feature, \"%s\");\n", | |
1862 | type->name); | |
1863 | if (type->u.u.size != 0) | |
1864 | printf_unfiltered | |
1865 | (" tdesc_set_struct_size (type, %d);\n", | |
1866 | type->u.u.size); | |
1867 | } | |
1868 | else | |
1869 | { | |
1870 | printf_unfiltered | |
1871 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", | |
1872 | type->name, type->u.u.size); | |
1873 | } | |
f92b06da WT |
1874 | for (ix3 = 0; |
1875 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1876 | ix3++) | |
1877 | { | |
81516450 DE |
1878 | const char *type_name; |
1879 | ||
1880 | gdb_assert (f->type != NULL); | |
1881 | type_name = f->type->name; | |
1882 | ||
1883 | /* To minimize changes to generated files, don't emit type | |
1884 | info for fields that have defaulted types. */ | |
1885 | if (f->start != -1) | |
1886 | { | |
1887 | gdb_assert (f->end != -1); | |
1888 | if (f->type->kind == TDESC_TYPE_BOOL) | |
1889 | { | |
1890 | gdb_assert (f->start == f->end); | |
1891 | printf_unfiltered | |
1892 | (" tdesc_add_flag (type, %d, \"%s\");\n", | |
1893 | f->start, f->name); | |
1894 | } | |
1895 | else if ((type->u.u.size == 4 | |
1896 | && f->type->kind == TDESC_TYPE_UINT32) | |
1897 | || (type->u.u.size == 8 | |
1898 | && f->type->kind == TDESC_TYPE_UINT64)) | |
1899 | { | |
1900 | printf_unfiltered | |
1901 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", | |
1902 | f->name, f->start, f->end); | |
1903 | } | |
1904 | else | |
1905 | { | |
1906 | printf_unfiltered | |
1907 | (" field_type = tdesc_named_type (feature," | |
1908 | " \"%s\");\n", | |
1909 | type_name); | |
1910 | printf_unfiltered | |
1911 | (" tdesc_add_typed_bitfield (type, \"%s\"," | |
1912 | " %d, %d, field_type);\n", | |
1913 | f->name, f->start, f->end); | |
1914 | } | |
1915 | } | |
1916 | else /* Not a bitfield. */ | |
f92b06da | 1917 | { |
81516450 DE |
1918 | gdb_assert (f->end == -1); |
1919 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
f92b06da | 1920 | printf_unfiltered |
81516450 DE |
1921 | (" field_type = tdesc_named_type (feature," |
1922 | " \"%s\");\n", | |
1923 | type_name); | |
f92b06da WT |
1924 | printf_unfiltered |
1925 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
1926 | f->name); | |
1927 | } | |
f92b06da WT |
1928 | } |
1929 | break; | |
ad068eab | 1930 | case TDESC_TYPE_UNION: |
81adfced | 1931 | printf_unfiltered |
ad068eab UW |
1932 | (" type = tdesc_create_union (feature, \"%s\");\n", |
1933 | type->name); | |
1934 | for (ix3 = 0; | |
1935 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1936 | ix3++) | |
81adfced DJ |
1937 | { |
1938 | printf_unfiltered | |
1939 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1940 | f->type->name); |
81adfced | 1941 | printf_unfiltered |
ad068eab UW |
1942 | (" tdesc_add_field (type, \"%s\", field_type);\n", |
1943 | f->name); | |
81adfced | 1944 | } |
81adfced | 1945 | break; |
81516450 | 1946 | case TDESC_TYPE_ENUM: |
a6f5ef51 | 1947 | printf_unfiltered |
81516450 DE |
1948 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", |
1949 | type->name, type->u.u.size); | |
a6f5ef51 | 1950 | for (ix3 = 0; |
81516450 | 1951 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); |
a6f5ef51 L |
1952 | ix3++) |
1953 | printf_unfiltered | |
81516450 DE |
1954 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", |
1955 | f->start, f->name); | |
a6f5ef51 | 1956 | break; |
81adfced | 1957 | default: |
ad068eab | 1958 | error (_("C output is not supported type \"%s\"."), type->name); |
81adfced | 1959 | } |
81adfced DJ |
1960 | printf_unfiltered ("\n"); |
1961 | } | |
1962 | ||
1963 | for (ix2 = 0; | |
1964 | VEC_iterate (tdesc_reg_p, feature->registers, ix2, reg); | |
1965 | ix2++) | |
1966 | { | |
1967 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
1968 | reg->name, reg->target_regnum, reg->save_restore); | |
1969 | if (reg->group) | |
1970 | printf_unfiltered ("\"%s\", ", reg->group); | |
1971 | else | |
1972 | printf_unfiltered ("NULL, "); | |
1973 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
1974 | } | |
1975 | ||
1976 | printf_unfiltered ("\n"); | |
1977 | } | |
1978 | ||
1979 | printf_unfiltered (" tdesc_%s = result;\n", function); | |
1980 | printf_unfiltered ("}\n"); | |
1981 | } | |
1982 | ||
2c0b251b PA |
1983 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1984 | extern initialize_file_ftype _initialize_target_descriptions; | |
1985 | ||
23181151 DJ |
1986 | void |
1987 | _initialize_target_descriptions (void) | |
1988 | { | |
123dc839 DJ |
1989 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
1990 | ||
23181151 DJ |
1991 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
1992 | Set target description specific variables."), | |
1993 | &tdesc_set_cmdlist, "set tdesc ", | |
1994 | 0 /* allow-unknown */, &setlist); | |
1995 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
1996 | Show target description specific variables."), | |
1997 | &tdesc_show_cmdlist, "show tdesc ", | |
1998 | 0 /* allow-unknown */, &showlist); | |
1999 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2000 | Unset target description specific variables."), | |
2001 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2002 | 0 /* allow-unknown */, &unsetlist); | |
2003 | ||
2004 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2005 | &tdesc_filename_cmd_string, |
23181151 DJ |
2006 | _("\ |
2007 | Set the file to read for an XML target description"), _("\ | |
2008 | Show the file to read for an XML target description"), _("\ | |
2009 | When set, GDB will read the target description from a local\n\ | |
2010 | file instead of querying the remote target."), | |
2011 | set_tdesc_filename_cmd, | |
2012 | show_tdesc_filename_cmd, | |
2013 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2014 | ||
2015 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2016 | Unset the file to read for an XML target description. When unset,\n\ | |
2017 | GDB will read the description from the target."), | |
2018 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2019 | |
2020 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2021 | Print the current target description as a C source file."), | |
2022 | &maintenanceprintlist); | |
23181151 | 2023 | } |