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424163ea DJ |
1 | /* Target description support for GDB. |
2 | ||
0fb0cc75 | 3 | Copyright (C) 2006, 2007, 2008, 2009 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" |
424163ea DJ |
32 | |
33 | #include "gdb_assert.h" | |
123dc839 DJ |
34 | #include "gdb_obstack.h" |
35 | #include "hashtab.h" | |
424163ea DJ |
36 | |
37 | /* Types. */ | |
38 | ||
29709017 DJ |
39 | typedef struct property |
40 | { | |
23181151 DJ |
41 | char *key; |
42 | char *value; | |
29709017 DJ |
43 | } property_s; |
44 | DEF_VEC_O(property_s); | |
45 | ||
123dc839 DJ |
46 | /* An individual register from a target description. */ |
47 | ||
48 | typedef struct tdesc_reg | |
49 | { | |
50 | /* The name of this register. In standard features, it may be | |
51 | recognized by the architecture support code, or it may be purely | |
52 | for the user. */ | |
53 | char *name; | |
54 | ||
55 | /* The register number used by this target to refer to this | |
56 | register. This is used for remote p/P packets and to determine | |
57 | the ordering of registers in the remote g/G packets. */ | |
58 | long target_regnum; | |
59 | ||
60 | /* If this flag is set, GDB should save and restore this register | |
61 | around calls to an inferior function. */ | |
62 | int save_restore; | |
63 | ||
64 | /* The name of the register group containing this register, or NULL | |
65 | if the group should be automatically determined from the | |
66 | register's type. If this is "general", "float", or "vector", the | |
67 | corresponding "info" command should display this register's | |
68 | value. It can be an arbitrary string, but should be limited to | |
69 | alphanumeric characters and internal hyphens. Currently other | |
70 | strings are ignored (treated as NULL). */ | |
71 | char *group; | |
72 | ||
73 | /* The size of the register, in bits. */ | |
74 | int bitsize; | |
75 | ||
76 | /* The type of the register. This string corresponds to either | |
77 | a named type from the target description or a predefined | |
78 | type from GDB. */ | |
79 | char *type; | |
80 | ||
81 | /* The target-described type corresponding to TYPE, if found. */ | |
ad068eab | 82 | struct tdesc_type *tdesc_type; |
123dc839 DJ |
83 | } *tdesc_reg_p; |
84 | DEF_VEC_P(tdesc_reg_p); | |
85 | ||
86 | /* A named type from a target description. */ | |
ad068eab UW |
87 | |
88 | typedef struct tdesc_type_field | |
89 | { | |
90 | char *name; | |
91 | struct tdesc_type *type; | |
92 | } tdesc_type_field; | |
93 | DEF_VEC_O(tdesc_type_field); | |
94 | ||
95 | typedef struct tdesc_type | |
96 | { | |
97 | /* The name of this type. */ | |
98 | char *name; | |
99 | ||
100 | /* Identify the kind of this type. */ | |
101 | enum | |
102 | { | |
103 | /* Predefined types. */ | |
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 | ||
120 | /* Types defined by a target feature. */ | |
121 | TDESC_TYPE_VECTOR, | |
122 | TDESC_TYPE_UNION | |
123 | } kind; | |
124 | ||
125 | /* Kind-specific data. */ | |
126 | union | |
127 | { | |
128 | /* Vector type. */ | |
129 | struct | |
130 | { | |
131 | struct tdesc_type *type; | |
132 | int count; | |
133 | } v; | |
134 | ||
135 | /* Union type. */ | |
136 | struct | |
137 | { | |
138 | VEC(tdesc_type_field) *fields; | |
139 | } u; | |
140 | } u; | |
141 | } *tdesc_type_p; | |
142 | DEF_VEC_P(tdesc_type_p); | |
123dc839 DJ |
143 | |
144 | /* A feature from a target description. Each feature is a collection | |
145 | of other elements, e.g. registers and types. */ | |
146 | ||
147 | typedef struct tdesc_feature | |
148 | { | |
149 | /* The name of this feature. It may be recognized by the architecture | |
150 | support code. */ | |
151 | char *name; | |
152 | ||
153 | /* The registers associated with this feature. */ | |
154 | VEC(tdesc_reg_p) *registers; | |
155 | ||
156 | /* The types associated with this feature. */ | |
ad068eab | 157 | VEC(tdesc_type_p) *types; |
123dc839 DJ |
158 | } *tdesc_feature_p; |
159 | DEF_VEC_P(tdesc_feature_p); | |
160 | ||
161 | /* A target description. */ | |
162 | ||
424163ea DJ |
163 | struct target_desc |
164 | { | |
23181151 DJ |
165 | /* The architecture reported by the target, if any. */ |
166 | const struct bfd_arch_info *arch; | |
167 | ||
29709017 DJ |
168 | /* Any architecture-specific properties specified by the target. */ |
169 | VEC(property_s) *properties; | |
123dc839 DJ |
170 | |
171 | /* The features associated with this target. */ | |
172 | VEC(tdesc_feature_p) *features; | |
173 | }; | |
174 | ||
175 | /* Per-architecture data associated with a target description. The | |
176 | target description may be shared by multiple architectures, but | |
177 | this data is private to one gdbarch. */ | |
178 | ||
ad068eab UW |
179 | typedef struct tdesc_arch_reg |
180 | { | |
181 | struct tdesc_reg *reg; | |
182 | struct type *type; | |
183 | } tdesc_arch_reg; | |
184 | DEF_VEC_O(tdesc_arch_reg); | |
185 | ||
123dc839 DJ |
186 | struct tdesc_arch_data |
187 | { | |
ad068eab | 188 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
189 | During initialization of the gdbarch this list is used to store |
190 | registers which the architecture assigns a fixed register number. | |
191 | Registers which are NULL in this array, or off the end, are | |
192 | treated as zero-sized and nameless (i.e. placeholders in the | |
193 | numbering). */ | |
ad068eab | 194 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
195 | |
196 | /* Functions which report the register name, type, and reggroups for | |
197 | pseudo-registers. */ | |
198 | gdbarch_register_name_ftype *pseudo_register_name; | |
199 | gdbarch_register_type_ftype *pseudo_register_type; | |
200 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
201 | }; |
202 | ||
203 | /* Global state. These variables are associated with the current | |
204 | target; if GDB adds support for multiple simultaneous targets, then | |
205 | these variables should become target-specific data. */ | |
206 | ||
207 | /* A flag indicating that a description has already been fetched from | |
208 | the current target, so it should not be queried again. */ | |
209 | ||
210 | static int target_desc_fetched; | |
211 | ||
212 | /* The description fetched from the current target, or NULL if the | |
213 | current target did not supply any description. Only valid when | |
214 | target_desc_fetched is set. Only the description initialization | |
215 | code should access this; normally, the description should be | |
216 | accessed through the gdbarch object. */ | |
217 | ||
218 | static const struct target_desc *current_target_desc; | |
219 | ||
23181151 DJ |
220 | /* Other global variables. */ |
221 | ||
222 | /* The filename to read a target description from. */ | |
223 | ||
224 | static char *target_description_filename; | |
225 | ||
123dc839 DJ |
226 | /* A handle for architecture-specific data associated with the |
227 | target description (see struct tdesc_arch_data). */ | |
228 | ||
229 | static struct gdbarch_data *tdesc_data; | |
230 | ||
424163ea DJ |
231 | /* Fetch the current target's description, and switch the current |
232 | architecture to one which incorporates that description. */ | |
233 | ||
234 | void | |
235 | target_find_description (void) | |
236 | { | |
237 | /* If we've already fetched a description from the target, don't do | |
238 | it again. This allows a target to fetch the description early, | |
239 | during its to_open or to_create_inferior, if it needs extra | |
240 | information about the target to initialize. */ | |
241 | if (target_desc_fetched) | |
242 | return; | |
243 | ||
244 | /* The current architecture should not have any target description | |
245 | specified. It should have been cleared, e.g. when we | |
246 | disconnected from the previous target. */ | |
1cf3db46 | 247 | gdb_assert (gdbarch_target_desc (target_gdbarch) == NULL); |
424163ea | 248 | |
23181151 DJ |
249 | /* First try to fetch an XML description from the user-specified |
250 | file. */ | |
251 | current_target_desc = NULL; | |
252 | if (target_description_filename != NULL | |
253 | && *target_description_filename != '\0') | |
254 | current_target_desc | |
255 | = file_read_description_xml (target_description_filename); | |
256 | ||
257 | /* Next try to read the description from the current target using | |
258 | target objects. */ | |
259 | if (current_target_desc == NULL) | |
260 | current_target_desc = target_read_description_xml (¤t_target); | |
261 | ||
262 | /* If that failed try a target-specific hook. */ | |
263 | if (current_target_desc == NULL) | |
264 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
265 | |
266 | /* If a non-NULL description was returned, then update the current | |
267 | architecture. */ | |
268 | if (current_target_desc) | |
269 | { | |
270 | struct gdbarch_info info; | |
271 | ||
272 | gdbarch_info_init (&info); | |
273 | info.target_desc = current_target_desc; | |
274 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
275 | warning (_("Architecture rejected target-supplied description")); |
276 | else | |
277 | { | |
278 | struct tdesc_arch_data *data; | |
279 | ||
1cf3db46 | 280 | data = gdbarch_data (target_gdbarch, tdesc_data); |
123dc839 | 281 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 282 | && data->arch_regs == NULL) |
123dc839 DJ |
283 | warning (_("Target-supplied registers are not supported " |
284 | "by the current architecture")); | |
285 | } | |
424163ea DJ |
286 | } |
287 | ||
288 | /* Now that we know this description is usable, record that we | |
289 | fetched it. */ | |
290 | target_desc_fetched = 1; | |
291 | } | |
292 | ||
293 | /* Discard any description fetched from the current target, and switch | |
294 | the current architecture to one with no target description. */ | |
295 | ||
296 | void | |
297 | target_clear_description (void) | |
298 | { | |
299 | struct gdbarch_info info; | |
300 | ||
301 | if (!target_desc_fetched) | |
302 | return; | |
303 | ||
304 | target_desc_fetched = 0; | |
305 | current_target_desc = NULL; | |
306 | ||
307 | gdbarch_info_init (&info); | |
308 | if (!gdbarch_update_p (info)) | |
309 | internal_error (__FILE__, __LINE__, | |
310 | _("Could not remove target-supplied description")); | |
311 | } | |
312 | ||
313 | /* Return the global current target description. This should only be | |
314 | used by gdbarch initialization code; most access should be through | |
315 | an existing gdbarch. */ | |
316 | ||
317 | const struct target_desc * | |
318 | target_current_description (void) | |
319 | { | |
320 | if (target_desc_fetched) | |
321 | return current_target_desc; | |
322 | ||
323 | return NULL; | |
324 | } | |
23181151 DJ |
325 | \f |
326 | ||
123dc839 | 327 | /* Direct accessors for target descriptions. */ |
424163ea | 328 | |
29709017 DJ |
329 | /* Return the string value of a property named KEY, or NULL if the |
330 | property was not specified. */ | |
331 | ||
332 | const char * | |
333 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
334 | { | |
335 | struct property *prop; | |
336 | int ix; | |
337 | ||
338 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
339 | ix++) | |
340 | if (strcmp (prop->key, key) == 0) | |
341 | return prop->value; | |
342 | ||
343 | return NULL; | |
344 | } | |
345 | ||
23181151 DJ |
346 | /* Return the BFD architecture associated with this target |
347 | description, or NULL if no architecture was specified. */ | |
348 | ||
349 | const struct bfd_arch_info * | |
350 | tdesc_architecture (const struct target_desc *target_desc) | |
351 | { | |
352 | return target_desc->arch; | |
353 | } | |
354 | \f | |
355 | ||
123dc839 DJ |
356 | /* Return 1 if this target description includes any registers. */ |
357 | ||
358 | int | |
359 | tdesc_has_registers (const struct target_desc *target_desc) | |
360 | { | |
361 | int ix; | |
362 | struct tdesc_feature *feature; | |
363 | ||
364 | if (target_desc == NULL) | |
365 | return 0; | |
366 | ||
367 | for (ix = 0; | |
368 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
369 | ix++) | |
370 | if (! VEC_empty (tdesc_reg_p, feature->registers)) | |
371 | return 1; | |
372 | ||
373 | return 0; | |
374 | } | |
375 | ||
376 | /* Return the feature with the given name, if present, or NULL if | |
377 | the named feature is not found. */ | |
378 | ||
379 | const struct tdesc_feature * | |
380 | tdesc_find_feature (const struct target_desc *target_desc, | |
381 | const char *name) | |
382 | { | |
383 | int ix; | |
384 | struct tdesc_feature *feature; | |
385 | ||
386 | for (ix = 0; | |
387 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
388 | ix++) | |
389 | if (strcmp (feature->name, name) == 0) | |
390 | return feature; | |
391 | ||
392 | return NULL; | |
393 | } | |
394 | ||
395 | /* Return the name of FEATURE. */ | |
396 | ||
397 | const char * | |
398 | tdesc_feature_name (const struct tdesc_feature *feature) | |
399 | { | |
400 | return feature->name; | |
401 | } | |
402 | ||
ad068eab UW |
403 | /* Predefined types. */ |
404 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 405 | { |
ad068eab UW |
406 | { "int8", TDESC_TYPE_INT8 }, |
407 | { "int16", TDESC_TYPE_INT16 }, | |
408 | { "int32", TDESC_TYPE_INT32 }, | |
409 | { "int64", TDESC_TYPE_INT64 }, | |
410 | { "int128", TDESC_TYPE_INT128 }, | |
411 | { "uint8", TDESC_TYPE_UINT8 }, | |
412 | { "uint16", TDESC_TYPE_UINT16 }, | |
413 | { "uint32", TDESC_TYPE_UINT32 }, | |
414 | { "uint64", TDESC_TYPE_UINT64 }, | |
415 | { "uint128", TDESC_TYPE_UINT128 }, | |
416 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
417 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
418 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
419 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
420 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT } | |
421 | }; | |
81adfced | 422 | |
123dc839 DJ |
423 | /* Return the type associated with ID in the context of FEATURE, or |
424 | NULL if none. */ | |
425 | ||
ad068eab | 426 | struct tdesc_type * |
123dc839 DJ |
427 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
428 | { | |
429 | int ix; | |
ad068eab | 430 | struct tdesc_type *type; |
123dc839 DJ |
431 | |
432 | /* First try target-defined types. */ | |
ad068eab UW |
433 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
434 | if (strcmp (type->name, id) == 0) | |
435 | return type; | |
123dc839 | 436 | |
81adfced DJ |
437 | /* Next try the predefined types. */ |
438 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
439 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 440 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
441 | |
442 | return NULL; | |
443 | } | |
ad068eab UW |
444 | |
445 | /* Construct, if necessary, and return the GDB type implementing target | |
446 | type TDESC_TYPE for architecture GDBARCH. */ | |
447 | ||
448 | static struct type * | |
449 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
450 | { | |
451 | switch (tdesc_type->kind) | |
452 | { | |
453 | /* Predefined types. */ | |
454 | case TDESC_TYPE_INT8: | |
455 | return builtin_type_int8; | |
456 | ||
457 | case TDESC_TYPE_INT16: | |
458 | return builtin_type_int16; | |
459 | ||
460 | case TDESC_TYPE_INT32: | |
461 | return builtin_type_int32; | |
462 | ||
463 | case TDESC_TYPE_INT64: | |
464 | return builtin_type_int64; | |
465 | ||
466 | case TDESC_TYPE_INT128: | |
467 | return builtin_type_int128; | |
468 | ||
469 | case TDESC_TYPE_UINT8: | |
470 | return builtin_type_uint8; | |
471 | ||
472 | case TDESC_TYPE_UINT16: | |
473 | return builtin_type_uint16; | |
474 | ||
475 | case TDESC_TYPE_UINT32: | |
476 | return builtin_type_uint32; | |
477 | ||
478 | case TDESC_TYPE_UINT64: | |
479 | return builtin_type_uint64; | |
480 | ||
481 | case TDESC_TYPE_UINT128: | |
482 | return builtin_type_uint128; | |
483 | ||
484 | case TDESC_TYPE_CODE_PTR: | |
485 | return builtin_type (gdbarch)->builtin_func_ptr; | |
486 | ||
487 | case TDESC_TYPE_DATA_PTR: | |
488 | return builtin_type (gdbarch)->builtin_data_ptr; | |
489 | ||
490 | case TDESC_TYPE_IEEE_SINGLE: | |
491 | return builtin_type_ieee_single; | |
492 | ||
493 | case TDESC_TYPE_IEEE_DOUBLE: | |
494 | return builtin_type_ieee_double; | |
495 | ||
496 | case TDESC_TYPE_ARM_FPA_EXT: | |
497 | return builtin_type_arm_ext; | |
498 | ||
499 | /* Types defined by a target feature. */ | |
500 | case TDESC_TYPE_VECTOR: | |
501 | { | |
502 | struct type *type, *field_type; | |
503 | ||
504 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
505 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
506 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
507 | ||
508 | return type; | |
509 | } | |
510 | ||
511 | case TDESC_TYPE_UNION: | |
512 | { | |
513 | struct type *type, *field_type; | |
514 | struct tdesc_type_field *f; | |
515 | int ix; | |
516 | ||
517 | type = init_composite_type (NULL, TYPE_CODE_UNION); | |
518 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
519 | ||
520 | for (ix = 0; | |
521 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
522 | ix++) | |
523 | { | |
524 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
525 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
526 | ||
527 | /* If any of the children of this union are vectors, flag the | |
528 | union as a vector also. This allows e.g. a union of two | |
529 | vector types to show up automatically in "info vector". */ | |
530 | if (TYPE_VECTOR (field_type)) | |
531 | TYPE_VECTOR (type) = 1; | |
532 | } | |
533 | ||
534 | return type; | |
535 | } | |
536 | } | |
537 | ||
538 | internal_error (__FILE__, __LINE__, | |
539 | "Type \"%s\" has an unknown kind %d", | |
540 | tdesc_type->name, tdesc_type->kind); | |
541 | } | |
123dc839 DJ |
542 | \f |
543 | ||
544 | /* Support for registers from target descriptions. */ | |
545 | ||
546 | /* Construct the per-gdbarch data. */ | |
547 | ||
548 | static void * | |
549 | tdesc_data_init (struct obstack *obstack) | |
550 | { | |
551 | struct tdesc_arch_data *data; | |
552 | ||
553 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
554 | return data; | |
555 | } | |
556 | ||
557 | /* Similar, but for the temporary copy used during architecture | |
558 | initialization. */ | |
559 | ||
560 | struct tdesc_arch_data * | |
561 | tdesc_data_alloc (void) | |
562 | { | |
563 | return XZALLOC (struct tdesc_arch_data); | |
564 | } | |
565 | ||
566 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
567 | to be used (for instance if it was unsuitable for the | |
568 | architecture). */ | |
569 | ||
570 | void | |
571 | tdesc_data_cleanup (void *data_untyped) | |
572 | { | |
573 | struct tdesc_arch_data *data = data_untyped; | |
574 | ||
ad068eab | 575 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
576 | xfree (data); |
577 | } | |
578 | ||
579 | /* Search FEATURE for a register named NAME. */ | |
580 | ||
7cc46491 DJ |
581 | static struct tdesc_reg * |
582 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
583 | const char *name) | |
123dc839 DJ |
584 | { |
585 | int ixr; | |
586 | struct tdesc_reg *reg; | |
587 | ||
588 | for (ixr = 0; | |
589 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
590 | ixr++) | |
591 | if (strcasecmp (reg->name, name) == 0) | |
7cc46491 | 592 | return reg; |
123dc839 | 593 | |
7cc46491 DJ |
594 | return NULL; |
595 | } | |
596 | ||
597 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
598 | ||
599 | int | |
600 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
601 | struct tdesc_arch_data *data, | |
602 | int regno, const char *name) | |
603 | { | |
ad068eab | 604 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
605 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
606 | ||
607 | if (reg == NULL) | |
608 | return 0; | |
609 | ||
610 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
611 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
612 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
613 | ||
614 | arch_reg.reg = reg; | |
615 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 616 | return 1; |
123dc839 DJ |
617 | } |
618 | ||
7cc46491 DJ |
619 | /* Search FEATURE for a register whose name is in NAMES and assign |
620 | REGNO to it. */ | |
123dc839 DJ |
621 | |
622 | int | |
623 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
624 | struct tdesc_arch_data *data, | |
625 | int regno, const char *const names[]) | |
626 | { | |
627 | int i; | |
628 | ||
629 | for (i = 0; names[i] != NULL; i++) | |
630 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
631 | return 1; | |
632 | ||
633 | return 0; | |
634 | } | |
635 | ||
7cc46491 DJ |
636 | /* Search FEATURE for a register named NAME, and return its size in |
637 | bits. The register must exist. */ | |
638 | ||
639 | int | |
640 | tdesc_register_size (const struct tdesc_feature *feature, | |
641 | const char *name) | |
642 | { | |
643 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
644 | ||
645 | gdb_assert (reg != NULL); | |
646 | return reg->bitsize; | |
647 | } | |
648 | ||
123dc839 DJ |
649 | /* Look up a register by its GDB internal register number. */ |
650 | ||
ad068eab UW |
651 | static struct tdesc_arch_reg * |
652 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 653 | { |
ad068eab | 654 | struct tdesc_arch_reg *reg; |
123dc839 DJ |
655 | struct tdesc_arch_data *data; |
656 | ||
657 | data = gdbarch_data (gdbarch, tdesc_data); | |
ad068eab UW |
658 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
659 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
660 | else |
661 | return NULL; | |
662 | } | |
663 | ||
ad068eab UW |
664 | static struct tdesc_reg * |
665 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
666 | { | |
667 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
668 | return reg? reg->reg : NULL; | |
669 | } | |
670 | ||
f8b73d13 DJ |
671 | /* Return the name of register REGNO, from the target description or |
672 | from an architecture-provided pseudo_register_name method. */ | |
673 | ||
674 | const char * | |
d93859e2 | 675 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 676 | { |
d93859e2 UW |
677 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
678 | int num_regs = gdbarch_num_regs (gdbarch); | |
679 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
680 | |
681 | if (reg != NULL) | |
682 | return reg->name; | |
683 | ||
684 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
685 | { | |
d93859e2 | 686 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); |
123dc839 | 687 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 688 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
689 | } |
690 | ||
691 | return ""; | |
692 | } | |
693 | ||
694 | static struct type * | |
695 | tdesc_register_type (struct gdbarch *gdbarch, int regno) | |
696 | { | |
ad068eab UW |
697 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
698 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
699 | int num_regs = gdbarch_num_regs (gdbarch); |
700 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
701 | ||
702 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
703 | { | |
704 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
705 | gdb_assert (data->pseudo_register_type != NULL); | |
706 | return data->pseudo_register_type (gdbarch, regno); | |
707 | } | |
708 | ||
709 | if (reg == NULL) | |
710 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
711 | return builtin_type_int0; | |
712 | ||
ad068eab | 713 | if (arch_reg->type == NULL) |
123dc839 | 714 | { |
ad068eab UW |
715 | /* First check for a predefined or target defined type. */ |
716 | if (reg->tdesc_type) | |
717 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
718 | ||
719 | /* Next try size-sensitive type shortcuts. */ | |
720 | else if (strcmp (reg->type, "float") == 0) | |
721 | { | |
722 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
723 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
724 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
725 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
726 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
727 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
728 | else | |
729 | { | |
730 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
731 | reg->name, reg->bitsize); | |
732 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
733 | } | |
734 | } | |
735 | else if (strcmp (reg->type, "int") == 0) | |
736 | { | |
737 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
738 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
739 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
740 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
741 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
742 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
743 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
744 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
745 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
746 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
747 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
748 | /* A bit desperate by this point... */ | |
749 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; | |
750 | else | |
751 | { | |
752 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
753 | reg->name, reg->bitsize); | |
754 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
755 | } | |
756 | } | |
757 | ||
758 | if (arch_reg->type == NULL) | |
759 | internal_error (__FILE__, __LINE__, | |
760 | "Register \"%s\" has an unknown type \"%s\"", | |
761 | reg->name, reg->type); | |
123dc839 | 762 | } |
123dc839 | 763 | |
ad068eab | 764 | return arch_reg->type; |
123dc839 DJ |
765 | } |
766 | ||
767 | static int | |
768 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
769 | { | |
770 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
771 | ||
772 | if (reg != NULL) | |
773 | return reg->target_regnum; | |
774 | else | |
775 | return -1; | |
776 | } | |
777 | ||
778 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
779 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
780 | Unlike a gdbarch register_reggroup_p method, this function will |
781 | return -1 if it does not know; the caller should handle registers | |
782 | with no specified group. | |
123dc839 DJ |
783 | |
784 | Arbitrary strings (other than "general", "float", and "vector") | |
785 | from the description are not used; they cause the register to be | |
786 | displayed in "info all-registers" but excluded from "info | |
787 | registers" et al. The names of containing features are also not | |
788 | used. This might be extended to display registers in some more | |
789 | useful groupings. | |
790 | ||
791 | The save-restore flag is also implemented here. */ | |
792 | ||
f8b73d13 DJ |
793 | int |
794 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
795 | struct reggroup *reggroup) | |
123dc839 | 796 | { |
123dc839 DJ |
797 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
798 | ||
123dc839 DJ |
799 | if (reg != NULL && reg->group != NULL) |
800 | { | |
801 | int general_p = 0, float_p = 0, vector_p = 0; | |
802 | ||
803 | if (strcmp (reg->group, "general") == 0) | |
804 | general_p = 1; | |
805 | else if (strcmp (reg->group, "float") == 0) | |
806 | float_p = 1; | |
807 | else if (strcmp (reg->group, "vector") == 0) | |
808 | vector_p = 1; | |
809 | ||
810 | if (reggroup == float_reggroup) | |
811 | return float_p; | |
812 | ||
813 | if (reggroup == vector_reggroup) | |
814 | return vector_p; | |
815 | ||
816 | if (reggroup == general_reggroup) | |
817 | return general_p; | |
818 | } | |
819 | ||
820 | if (reg != NULL | |
821 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
822 | return reg->save_restore; | |
823 | ||
f8b73d13 DJ |
824 | return -1; |
825 | } | |
826 | ||
827 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
828 | group specified go to the default reggroup function and are handled | |
829 | by type. */ | |
830 | ||
831 | static int | |
832 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
833 | struct reggroup *reggroup) | |
834 | { | |
835 | int num_regs = gdbarch_num_regs (gdbarch); | |
836 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
837 | int ret; | |
838 | ||
839 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
840 | { | |
841 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
842 | gdb_assert (data->pseudo_register_reggroup_p != NULL); | |
843 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
844 | } | |
845 | ||
846 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
847 | if (ret != -1) | |
848 | return ret; | |
849 | ||
123dc839 DJ |
850 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
851 | } | |
852 | ||
853 | /* Record architecture-specific functions to call for pseudo-register | |
854 | support. */ | |
855 | ||
856 | void | |
857 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
858 | gdbarch_register_name_ftype *pseudo_name) | |
859 | { | |
860 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
861 | ||
862 | data->pseudo_register_name = pseudo_name; | |
863 | } | |
864 | ||
865 | void | |
866 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
867 | gdbarch_register_type_ftype *pseudo_type) | |
868 | { | |
869 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
870 | ||
871 | data->pseudo_register_type = pseudo_type; | |
872 | } | |
873 | ||
874 | void | |
875 | set_tdesc_pseudo_register_reggroup_p | |
876 | (struct gdbarch *gdbarch, | |
877 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
878 | { | |
879 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
880 | ||
881 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
882 | } | |
883 | ||
884 | /* Update GDBARCH to use the target description for registers. */ | |
885 | ||
886 | void | |
887 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 888 | const struct target_desc *target_desc, |
123dc839 DJ |
889 | struct tdesc_arch_data *early_data) |
890 | { | |
891 | int num_regs = gdbarch_num_regs (gdbarch); | |
892 | int i, ixf, ixr; | |
123dc839 DJ |
893 | struct tdesc_feature *feature; |
894 | struct tdesc_reg *reg; | |
895 | struct tdesc_arch_data *data; | |
ad068eab | 896 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
897 | htab_t reg_hash; |
898 | ||
123dc839 DJ |
899 | /* We can't use the description for registers if it doesn't describe |
900 | any. This function should only be called after validating | |
901 | registers, so the caller should know that registers are | |
902 | included. */ | |
903 | gdb_assert (tdesc_has_registers (target_desc)); | |
904 | ||
905 | data = gdbarch_data (gdbarch, tdesc_data); | |
ad068eab | 906 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
907 | xfree (early_data); |
908 | ||
909 | /* Build up a set of all registers, so that we can assign register | |
910 | numbers where needed. The hash table expands as necessary, so | |
911 | the initial size is arbitrary. */ | |
912 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
913 | for (ixf = 0; | |
914 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
915 | ixf++) | |
916 | for (ixr = 0; | |
917 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
918 | ixr++) | |
919 | { | |
920 | void **slot = htab_find_slot (reg_hash, reg, INSERT); | |
921 | ||
922 | *slot = reg; | |
923 | } | |
924 | ||
925 | /* Remove any registers which were assigned numbers by the | |
926 | architecture. */ | |
ad068eab UW |
927 | for (ixr = 0; |
928 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); | |
929 | ixr++) | |
930 | if (arch_reg->reg) | |
931 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
932 | |
933 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 934 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
935 | Iterate over the features, not the hash table, so that the order |
936 | matches that in the target description. */ | |
937 | ||
ad068eab UW |
938 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
939 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
940 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
941 | for (ixf = 0; |
942 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
943 | ixf++) | |
944 | for (ixr = 0; | |
945 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
946 | ixr++) | |
947 | if (htab_find (reg_hash, reg) != NULL) | |
948 | { | |
ad068eab UW |
949 | new_arch_reg.reg = reg; |
950 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
951 | num_regs++; |
952 | } | |
953 | ||
954 | htab_delete (reg_hash); | |
955 | ||
956 | /* Update the architecture. */ | |
957 | set_gdbarch_num_regs (gdbarch, num_regs); | |
958 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
959 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
960 | set_gdbarch_remote_register_number (gdbarch, | |
961 | tdesc_remote_register_number); | |
962 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
963 | } | |
964 | \f | |
965 | ||
424163ea DJ |
966 | /* Methods for constructing a target description. */ |
967 | ||
123dc839 DJ |
968 | static void |
969 | tdesc_free_reg (struct tdesc_reg *reg) | |
970 | { | |
971 | xfree (reg->name); | |
972 | xfree (reg->type); | |
973 | xfree (reg->group); | |
974 | xfree (reg); | |
975 | } | |
976 | ||
977 | void | |
978 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
979 | int regnum, int save_restore, const char *group, | |
980 | int bitsize, const char *type) | |
981 | { | |
982 | struct tdesc_reg *reg = XZALLOC (struct tdesc_reg); | |
983 | ||
984 | reg->name = xstrdup (name); | |
985 | reg->target_regnum = regnum; | |
986 | reg->save_restore = save_restore; | |
987 | reg->group = group ? xstrdup (group) : NULL; | |
988 | reg->bitsize = bitsize; | |
c8c12293 | 989 | reg->type = type ? xstrdup (type) : xstrdup ("<unknown>"); |
123dc839 DJ |
990 | |
991 | /* If the register's type is target-defined, look it up now. We may not | |
992 | have easy access to the containing feature when we want it later. */ | |
ad068eab | 993 | reg->tdesc_type = tdesc_named_type (feature, reg->type); |
123dc839 DJ |
994 | |
995 | VEC_safe_push (tdesc_reg_p, feature->registers, reg); | |
996 | } | |
997 | ||
ad068eab UW |
998 | static void |
999 | tdesc_free_type (struct tdesc_type *type) | |
1000 | { | |
1001 | ||
1002 | switch (type->kind) | |
1003 | { | |
1004 | case TDESC_TYPE_UNION: | |
1005 | { | |
1006 | struct tdesc_type_field *f; | |
1007 | int ix; | |
1008 | ||
1009 | for (ix = 0; | |
1010 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix, f); | |
1011 | ix++) | |
1012 | xfree (f->name); | |
1013 | ||
1014 | VEC_free (tdesc_type_field, type->u.u.fields); | |
1015 | } | |
1016 | break; | |
1017 | ||
1018 | default: | |
1019 | break; | |
1020 | } | |
1021 | ||
1022 | xfree (type->name); | |
1023 | xfree (type); | |
1024 | } | |
1025 | ||
1026 | struct tdesc_type * | |
1027 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1028 | struct tdesc_type *field_type, int count) | |
1029 | { | |
1030 | struct tdesc_type *type = XZALLOC (struct tdesc_type); | |
1031 | ||
1032 | type->name = xstrdup (name); | |
1033 | type->kind = TDESC_TYPE_VECTOR; | |
1034 | type->u.v.type = field_type; | |
1035 | type->u.v.count = count; | |
1036 | ||
1037 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1038 | return type; | |
1039 | } | |
1040 | ||
1041 | struct tdesc_type * | |
1042 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1043 | { | |
1044 | struct tdesc_type *type = XZALLOC (struct tdesc_type); | |
1045 | ||
1046 | type->name = xstrdup (name); | |
1047 | type->kind = TDESC_TYPE_UNION; | |
1048 | ||
1049 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1050 | return type; | |
1051 | } | |
1052 | ||
1053 | void | |
1054 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1055 | struct tdesc_type *field_type) | |
1056 | { | |
1057 | struct tdesc_type_field f = { 0 }; | |
1058 | ||
1059 | gdb_assert (type->kind == TDESC_TYPE_UNION); | |
1060 | ||
1061 | f.name = xstrdup (field_name); | |
1062 | f.type = field_type; | |
1063 | ||
1064 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1065 | } | |
1066 | ||
123dc839 DJ |
1067 | static void |
1068 | tdesc_free_feature (struct tdesc_feature *feature) | |
1069 | { | |
1070 | struct tdesc_reg *reg; | |
ad068eab | 1071 | struct tdesc_type *type; |
123dc839 DJ |
1072 | int ix; |
1073 | ||
1074 | for (ix = 0; VEC_iterate (tdesc_reg_p, feature->registers, ix, reg); ix++) | |
1075 | tdesc_free_reg (reg); | |
1076 | VEC_free (tdesc_reg_p, feature->registers); | |
1077 | ||
ad068eab UW |
1078 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
1079 | tdesc_free_type (type); | |
1080 | VEC_free (tdesc_type_p, feature->types); | |
123dc839 DJ |
1081 | |
1082 | xfree (feature->name); | |
1083 | xfree (feature); | |
1084 | } | |
1085 | ||
1086 | struct tdesc_feature * | |
1087 | tdesc_create_feature (struct target_desc *tdesc, const char *name) | |
1088 | { | |
1089 | struct tdesc_feature *new_feature = XZALLOC (struct tdesc_feature); | |
1090 | ||
1091 | new_feature->name = xstrdup (name); | |
1092 | ||
1093 | VEC_safe_push (tdesc_feature_p, tdesc->features, new_feature); | |
1094 | return new_feature; | |
1095 | } | |
1096 | ||
424163ea DJ |
1097 | struct target_desc * |
1098 | allocate_target_description (void) | |
1099 | { | |
1100 | return XZALLOC (struct target_desc); | |
1101 | } | |
29709017 | 1102 | |
23181151 DJ |
1103 | static void |
1104 | free_target_description (void *arg) | |
1105 | { | |
1106 | struct target_desc *target_desc = arg; | |
123dc839 | 1107 | struct tdesc_feature *feature; |
23181151 DJ |
1108 | struct property *prop; |
1109 | int ix; | |
1110 | ||
123dc839 DJ |
1111 | for (ix = 0; |
1112 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
1113 | ix++) | |
1114 | tdesc_free_feature (feature); | |
1115 | VEC_free (tdesc_feature_p, target_desc->features); | |
1116 | ||
23181151 DJ |
1117 | for (ix = 0; |
1118 | VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1119 | ix++) | |
1120 | { | |
1121 | xfree (prop->key); | |
1122 | xfree (prop->value); | |
1123 | } | |
1124 | VEC_free (property_s, target_desc->properties); | |
1125 | ||
1126 | xfree (target_desc); | |
1127 | } | |
1128 | ||
1129 | struct cleanup * | |
1130 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1131 | { | |
1132 | return make_cleanup (free_target_description, target_desc); | |
1133 | } | |
1134 | ||
29709017 DJ |
1135 | void |
1136 | set_tdesc_property (struct target_desc *target_desc, | |
1137 | const char *key, const char *value) | |
1138 | { | |
1139 | struct property *prop, new_prop; | |
1140 | int ix; | |
1141 | ||
1142 | gdb_assert (key != NULL && value != NULL); | |
1143 | ||
1144 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1145 | ix++) | |
1146 | if (strcmp (prop->key, key) == 0) | |
1147 | internal_error (__FILE__, __LINE__, | |
1148 | _("Attempted to add duplicate property \"%s\""), key); | |
1149 | ||
23181151 DJ |
1150 | new_prop.key = xstrdup (key); |
1151 | new_prop.value = xstrdup (value); | |
29709017 DJ |
1152 | VEC_safe_push (property_s, target_desc->properties, &new_prop); |
1153 | } | |
23181151 DJ |
1154 | |
1155 | void | |
1156 | set_tdesc_architecture (struct target_desc *target_desc, | |
1157 | const struct bfd_arch_info *arch) | |
1158 | { | |
1159 | target_desc->arch = arch; | |
1160 | } | |
1161 | \f | |
1162 | ||
1163 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1164 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1165 | ||
1166 | /* Helper functions for the CLI commands. */ | |
1167 | ||
1168 | static void | |
1169 | set_tdesc_cmd (char *args, int from_tty) | |
1170 | { | |
1171 | help_list (tdesc_set_cmdlist, "set tdesc ", -1, gdb_stdout); | |
1172 | } | |
1173 | ||
1174 | static void | |
1175 | show_tdesc_cmd (char *args, int from_tty) | |
1176 | { | |
1177 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1178 | } | |
1179 | ||
1180 | static void | |
1181 | unset_tdesc_cmd (char *args, int from_tty) | |
1182 | { | |
1183 | help_list (tdesc_unset_cmdlist, "unset tdesc ", -1, gdb_stdout); | |
1184 | } | |
1185 | ||
1186 | static void | |
1187 | set_tdesc_filename_cmd (char *args, int from_tty, | |
1188 | struct cmd_list_element *c) | |
1189 | { | |
1190 | target_clear_description (); | |
1191 | target_find_description (); | |
1192 | } | |
1193 | ||
1194 | static void | |
1195 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1196 | struct cmd_list_element *c, | |
1197 | const char *value) | |
1198 | { | |
1199 | if (value != NULL && *value != '\0') | |
1200 | printf_filtered (_("\ | |
1201 | The target description will be read from \"%s\".\n"), | |
1202 | value); | |
1203 | else | |
1204 | printf_filtered (_("\ | |
1205 | The target description will be read from the target.\n")); | |
1206 | } | |
1207 | ||
1208 | static void | |
1209 | unset_tdesc_filename_cmd (char *args, int from_tty) | |
1210 | { | |
1211 | xfree (target_description_filename); | |
1212 | target_description_filename = NULL; | |
1213 | target_clear_description (); | |
1214 | target_find_description (); | |
1215 | } | |
1216 | ||
81adfced DJ |
1217 | static void |
1218 | maint_print_c_tdesc_cmd (char *args, int from_tty) | |
1219 | { | |
1220 | const struct target_desc *tdesc; | |
1221 | const char *filename, *inp; | |
1222 | char *function, *outp; | |
1223 | struct property *prop; | |
1224 | struct tdesc_feature *feature; | |
1225 | struct tdesc_reg *reg; | |
ad068eab UW |
1226 | struct tdesc_type *type; |
1227 | struct tdesc_type_field *f; | |
81adfced DJ |
1228 | int ix, ix2, ix3; |
1229 | ||
1230 | /* Use the global target-supplied description, not the current | |
1231 | architecture's. This lets a GDB for one architecture generate C | |
1232 | for another architecture's description, even though the gdbarch | |
1233 | initialization code will reject the new description. */ | |
1234 | tdesc = current_target_desc; | |
1235 | if (tdesc == NULL) | |
1236 | error (_("There is no target description to print.")); | |
1237 | ||
1238 | if (target_description_filename == NULL) | |
1239 | error (_("The current target description did not come from an XML file.")); | |
1240 | ||
1241 | filename = lbasename (target_description_filename); | |
db3b9a10 | 1242 | function = alloca (strlen (filename) + 1); |
81adfced DJ |
1243 | for (inp = filename, outp = function; *inp != '\0'; inp++) |
1244 | if (*inp == '.') | |
1245 | break; | |
1246 | else if (*inp == '-') | |
1247 | *outp++ = '_'; | |
1248 | else | |
1249 | *outp++ = *inp; | |
1250 | *outp = '\0'; | |
1251 | ||
1252 | /* Standard boilerplate. */ | |
1253 | printf_unfiltered ("/* THIS FILE IS GENERATED. Original: %s */\n\n", | |
1254 | filename); | |
1255 | printf_unfiltered ("#include \"defs.h\"\n"); | |
81adfced DJ |
1256 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); |
1257 | printf_unfiltered ("\n"); | |
1258 | ||
1259 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", function); | |
1260 | printf_unfiltered ("static void\n"); | |
1261 | printf_unfiltered ("initialize_tdesc_%s (void)\n", function); | |
1262 | printf_unfiltered ("{\n"); | |
1263 | printf_unfiltered | |
1264 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1265 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
ad068eab | 1266 | printf_unfiltered (" struct tdesc_type *field_type, *type;\n"); |
81adfced DJ |
1267 | printf_unfiltered ("\n"); |
1268 | ||
1269 | if (tdesc_architecture (tdesc) != NULL) | |
1270 | { | |
1271 | printf_unfiltered | |
1272 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1273 | tdesc_architecture (tdesc)->printable_name); | |
1274 | printf_unfiltered ("\n"); | |
1275 | } | |
1276 | ||
1277 | for (ix = 0; VEC_iterate (property_s, tdesc->properties, ix, prop); | |
1278 | ix++) | |
1279 | { | |
1280 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1281 | prop->key, prop->value); | |
1282 | } | |
1283 | ||
1284 | for (ix = 0; | |
1285 | VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature); | |
1286 | ix++) | |
1287 | { | |
1288 | printf_unfiltered (" feature = tdesc_create_feature (result, \"%s\");\n", | |
1289 | feature->name); | |
1290 | ||
1291 | for (ix2 = 0; | |
ad068eab | 1292 | VEC_iterate (tdesc_type_p, feature->types, ix2, type); |
81adfced DJ |
1293 | ix2++) |
1294 | { | |
ad068eab | 1295 | switch (type->kind) |
81adfced | 1296 | { |
ad068eab | 1297 | case TDESC_TYPE_VECTOR: |
81adfced DJ |
1298 | printf_unfiltered |
1299 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1300 | type->u.v.type->name); |
81adfced | 1301 | printf_unfiltered |
ad068eab UW |
1302 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", |
1303 | type->name, type->u.v.count); | |
81adfced | 1304 | break; |
ad068eab | 1305 | case TDESC_TYPE_UNION: |
81adfced | 1306 | printf_unfiltered |
ad068eab UW |
1307 | (" type = tdesc_create_union (feature, \"%s\");\n", |
1308 | type->name); | |
1309 | for (ix3 = 0; | |
1310 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1311 | ix3++) | |
81adfced DJ |
1312 | { |
1313 | printf_unfiltered | |
1314 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1315 | f->type->name); |
81adfced | 1316 | printf_unfiltered |
ad068eab UW |
1317 | (" tdesc_add_field (type, \"%s\", field_type);\n", |
1318 | f->name); | |
81adfced | 1319 | } |
81adfced DJ |
1320 | break; |
1321 | default: | |
ad068eab | 1322 | error (_("C output is not supported type \"%s\"."), type->name); |
81adfced | 1323 | } |
81adfced DJ |
1324 | printf_unfiltered ("\n"); |
1325 | } | |
1326 | ||
1327 | for (ix2 = 0; | |
1328 | VEC_iterate (tdesc_reg_p, feature->registers, ix2, reg); | |
1329 | ix2++) | |
1330 | { | |
1331 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
1332 | reg->name, reg->target_regnum, reg->save_restore); | |
1333 | if (reg->group) | |
1334 | printf_unfiltered ("\"%s\", ", reg->group); | |
1335 | else | |
1336 | printf_unfiltered ("NULL, "); | |
1337 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
1338 | } | |
1339 | ||
1340 | printf_unfiltered ("\n"); | |
1341 | } | |
1342 | ||
1343 | printf_unfiltered (" tdesc_%s = result;\n", function); | |
1344 | printf_unfiltered ("}\n"); | |
1345 | } | |
1346 | ||
2c0b251b PA |
1347 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1348 | extern initialize_file_ftype _initialize_target_descriptions; | |
1349 | ||
23181151 DJ |
1350 | void |
1351 | _initialize_target_descriptions (void) | |
1352 | { | |
123dc839 DJ |
1353 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
1354 | ||
23181151 DJ |
1355 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
1356 | Set target description specific variables."), | |
1357 | &tdesc_set_cmdlist, "set tdesc ", | |
1358 | 0 /* allow-unknown */, &setlist); | |
1359 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
1360 | Show target description specific variables."), | |
1361 | &tdesc_show_cmdlist, "show tdesc ", | |
1362 | 0 /* allow-unknown */, &showlist); | |
1363 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
1364 | Unset target description specific variables."), | |
1365 | &tdesc_unset_cmdlist, "unset tdesc ", | |
1366 | 0 /* allow-unknown */, &unsetlist); | |
1367 | ||
1368 | add_setshow_filename_cmd ("filename", class_obscure, | |
1369 | &target_description_filename, | |
1370 | _("\ | |
1371 | Set the file to read for an XML target description"), _("\ | |
1372 | Show the file to read for an XML target description"), _("\ | |
1373 | When set, GDB will read the target description from a local\n\ | |
1374 | file instead of querying the remote target."), | |
1375 | set_tdesc_filename_cmd, | |
1376 | show_tdesc_filename_cmd, | |
1377 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
1378 | ||
1379 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
1380 | Unset the file to read for an XML target description. When unset,\n\ | |
1381 | GDB will read the description from the target."), | |
1382 | &tdesc_unset_cmdlist); | |
81adfced DJ |
1383 | |
1384 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
1385 | Print the current target description as a C source file."), | |
1386 | &maintenanceprintlist); | |
23181151 | 1387 | } |