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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 | ||
08d16641 PA |
168 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
169 | otherwise. */ | |
170 | enum gdb_osabi osabi; | |
171 | ||
29709017 DJ |
172 | /* Any architecture-specific properties specified by the target. */ |
173 | VEC(property_s) *properties; | |
123dc839 DJ |
174 | |
175 | /* The features associated with this target. */ | |
176 | VEC(tdesc_feature_p) *features; | |
177 | }; | |
178 | ||
179 | /* Per-architecture data associated with a target description. The | |
180 | target description may be shared by multiple architectures, but | |
181 | this data is private to one gdbarch. */ | |
182 | ||
ad068eab UW |
183 | typedef struct tdesc_arch_reg |
184 | { | |
185 | struct tdesc_reg *reg; | |
186 | struct type *type; | |
187 | } tdesc_arch_reg; | |
188 | DEF_VEC_O(tdesc_arch_reg); | |
189 | ||
123dc839 DJ |
190 | struct tdesc_arch_data |
191 | { | |
ad068eab | 192 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
193 | During initialization of the gdbarch this list is used to store |
194 | registers which the architecture assigns a fixed register number. | |
195 | Registers which are NULL in this array, or off the end, are | |
196 | treated as zero-sized and nameless (i.e. placeholders in the | |
197 | numbering). */ | |
ad068eab | 198 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
199 | |
200 | /* Functions which report the register name, type, and reggroups for | |
201 | pseudo-registers. */ | |
202 | gdbarch_register_name_ftype *pseudo_register_name; | |
203 | gdbarch_register_type_ftype *pseudo_register_type; | |
204 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
205 | }; |
206 | ||
207 | /* Global state. These variables are associated with the current | |
208 | target; if GDB adds support for multiple simultaneous targets, then | |
209 | these variables should become target-specific data. */ | |
210 | ||
211 | /* A flag indicating that a description has already been fetched from | |
212 | the current target, so it should not be queried again. */ | |
213 | ||
214 | static int target_desc_fetched; | |
215 | ||
216 | /* The description fetched from the current target, or NULL if the | |
217 | current target did not supply any description. Only valid when | |
218 | target_desc_fetched is set. Only the description initialization | |
219 | code should access this; normally, the description should be | |
220 | accessed through the gdbarch object. */ | |
221 | ||
222 | static const struct target_desc *current_target_desc; | |
223 | ||
23181151 DJ |
224 | /* Other global variables. */ |
225 | ||
226 | /* The filename to read a target description from. */ | |
227 | ||
228 | static char *target_description_filename; | |
229 | ||
123dc839 DJ |
230 | /* A handle for architecture-specific data associated with the |
231 | target description (see struct tdesc_arch_data). */ | |
232 | ||
233 | static struct gdbarch_data *tdesc_data; | |
234 | ||
424163ea DJ |
235 | /* Fetch the current target's description, and switch the current |
236 | architecture to one which incorporates that description. */ | |
237 | ||
238 | void | |
239 | target_find_description (void) | |
240 | { | |
241 | /* If we've already fetched a description from the target, don't do | |
242 | it again. This allows a target to fetch the description early, | |
243 | during its to_open or to_create_inferior, if it needs extra | |
244 | information about the target to initialize. */ | |
245 | if (target_desc_fetched) | |
246 | return; | |
247 | ||
248 | /* The current architecture should not have any target description | |
249 | specified. It should have been cleared, e.g. when we | |
250 | disconnected from the previous target. */ | |
1cf3db46 | 251 | gdb_assert (gdbarch_target_desc (target_gdbarch) == NULL); |
424163ea | 252 | |
23181151 DJ |
253 | /* First try to fetch an XML description from the user-specified |
254 | file. */ | |
255 | current_target_desc = NULL; | |
256 | if (target_description_filename != NULL | |
257 | && *target_description_filename != '\0') | |
258 | current_target_desc | |
259 | = file_read_description_xml (target_description_filename); | |
260 | ||
261 | /* Next try to read the description from the current target using | |
262 | target objects. */ | |
263 | if (current_target_desc == NULL) | |
264 | current_target_desc = target_read_description_xml (¤t_target); | |
265 | ||
266 | /* If that failed try a target-specific hook. */ | |
267 | if (current_target_desc == NULL) | |
268 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
269 | |
270 | /* If a non-NULL description was returned, then update the current | |
271 | architecture. */ | |
272 | if (current_target_desc) | |
273 | { | |
274 | struct gdbarch_info info; | |
275 | ||
276 | gdbarch_info_init (&info); | |
277 | info.target_desc = current_target_desc; | |
278 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
279 | warning (_("Architecture rejected target-supplied description")); |
280 | else | |
281 | { | |
282 | struct tdesc_arch_data *data; | |
283 | ||
1cf3db46 | 284 | data = gdbarch_data (target_gdbarch, tdesc_data); |
123dc839 | 285 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 286 | && data->arch_regs == NULL) |
123dc839 DJ |
287 | warning (_("Target-supplied registers are not supported " |
288 | "by the current architecture")); | |
289 | } | |
424163ea DJ |
290 | } |
291 | ||
292 | /* Now that we know this description is usable, record that we | |
293 | fetched it. */ | |
294 | target_desc_fetched = 1; | |
295 | } | |
296 | ||
297 | /* Discard any description fetched from the current target, and switch | |
298 | the current architecture to one with no target description. */ | |
299 | ||
300 | void | |
301 | target_clear_description (void) | |
302 | { | |
303 | struct gdbarch_info info; | |
304 | ||
305 | if (!target_desc_fetched) | |
306 | return; | |
307 | ||
308 | target_desc_fetched = 0; | |
309 | current_target_desc = NULL; | |
310 | ||
311 | gdbarch_info_init (&info); | |
312 | if (!gdbarch_update_p (info)) | |
313 | internal_error (__FILE__, __LINE__, | |
314 | _("Could not remove target-supplied description")); | |
315 | } | |
316 | ||
317 | /* Return the global current target description. This should only be | |
318 | used by gdbarch initialization code; most access should be through | |
319 | an existing gdbarch. */ | |
320 | ||
321 | const struct target_desc * | |
322 | target_current_description (void) | |
323 | { | |
324 | if (target_desc_fetched) | |
325 | return current_target_desc; | |
326 | ||
327 | return NULL; | |
328 | } | |
23181151 DJ |
329 | \f |
330 | ||
123dc839 | 331 | /* Direct accessors for target descriptions. */ |
424163ea | 332 | |
29709017 DJ |
333 | /* Return the string value of a property named KEY, or NULL if the |
334 | property was not specified. */ | |
335 | ||
336 | const char * | |
337 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
338 | { | |
339 | struct property *prop; | |
340 | int ix; | |
341 | ||
342 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
343 | ix++) | |
344 | if (strcmp (prop->key, key) == 0) | |
345 | return prop->value; | |
346 | ||
347 | return NULL; | |
348 | } | |
349 | ||
23181151 DJ |
350 | /* Return the BFD architecture associated with this target |
351 | description, or NULL if no architecture was specified. */ | |
352 | ||
353 | const struct bfd_arch_info * | |
354 | tdesc_architecture (const struct target_desc *target_desc) | |
355 | { | |
356 | return target_desc->arch; | |
357 | } | |
08d16641 PA |
358 | |
359 | /* Return the OSABI associated with this target description, or | |
360 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
361 | ||
362 | enum gdb_osabi | |
363 | tdesc_osabi (const struct target_desc *target_desc) | |
364 | { | |
365 | return target_desc->osabi; | |
366 | } | |
367 | ||
23181151 DJ |
368 | \f |
369 | ||
123dc839 DJ |
370 | /* Return 1 if this target description includes any registers. */ |
371 | ||
372 | int | |
373 | tdesc_has_registers (const struct target_desc *target_desc) | |
374 | { | |
375 | int ix; | |
376 | struct tdesc_feature *feature; | |
377 | ||
378 | if (target_desc == NULL) | |
379 | return 0; | |
380 | ||
381 | for (ix = 0; | |
382 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
383 | ix++) | |
384 | if (! VEC_empty (tdesc_reg_p, feature->registers)) | |
385 | return 1; | |
386 | ||
387 | return 0; | |
388 | } | |
389 | ||
390 | /* Return the feature with the given name, if present, or NULL if | |
391 | the named feature is not found. */ | |
392 | ||
393 | const struct tdesc_feature * | |
394 | tdesc_find_feature (const struct target_desc *target_desc, | |
395 | const char *name) | |
396 | { | |
397 | int ix; | |
398 | struct tdesc_feature *feature; | |
399 | ||
400 | for (ix = 0; | |
401 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
402 | ix++) | |
403 | if (strcmp (feature->name, name) == 0) | |
404 | return feature; | |
405 | ||
406 | return NULL; | |
407 | } | |
408 | ||
409 | /* Return the name of FEATURE. */ | |
410 | ||
411 | const char * | |
412 | tdesc_feature_name (const struct tdesc_feature *feature) | |
413 | { | |
414 | return feature->name; | |
415 | } | |
416 | ||
ad068eab UW |
417 | /* Predefined types. */ |
418 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 419 | { |
ad068eab UW |
420 | { "int8", TDESC_TYPE_INT8 }, |
421 | { "int16", TDESC_TYPE_INT16 }, | |
422 | { "int32", TDESC_TYPE_INT32 }, | |
423 | { "int64", TDESC_TYPE_INT64 }, | |
424 | { "int128", TDESC_TYPE_INT128 }, | |
425 | { "uint8", TDESC_TYPE_UINT8 }, | |
426 | { "uint16", TDESC_TYPE_UINT16 }, | |
427 | { "uint32", TDESC_TYPE_UINT32 }, | |
428 | { "uint64", TDESC_TYPE_UINT64 }, | |
429 | { "uint128", TDESC_TYPE_UINT128 }, | |
430 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
431 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
432 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
433 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
434 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT } | |
435 | }; | |
81adfced | 436 | |
123dc839 DJ |
437 | /* Return the type associated with ID in the context of FEATURE, or |
438 | NULL if none. */ | |
439 | ||
ad068eab | 440 | struct tdesc_type * |
123dc839 DJ |
441 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
442 | { | |
443 | int ix; | |
ad068eab | 444 | struct tdesc_type *type; |
123dc839 DJ |
445 | |
446 | /* First try target-defined types. */ | |
ad068eab UW |
447 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
448 | if (strcmp (type->name, id) == 0) | |
449 | return type; | |
123dc839 | 450 | |
81adfced DJ |
451 | /* Next try the predefined types. */ |
452 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
453 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 454 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
455 | |
456 | return NULL; | |
457 | } | |
ad068eab UW |
458 | |
459 | /* Construct, if necessary, and return the GDB type implementing target | |
460 | type TDESC_TYPE for architecture GDBARCH. */ | |
461 | ||
462 | static struct type * | |
463 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
464 | { | |
465 | switch (tdesc_type->kind) | |
466 | { | |
467 | /* Predefined types. */ | |
468 | case TDESC_TYPE_INT8: | |
df4df182 | 469 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
470 | |
471 | case TDESC_TYPE_INT16: | |
df4df182 | 472 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
473 | |
474 | case TDESC_TYPE_INT32: | |
df4df182 | 475 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
476 | |
477 | case TDESC_TYPE_INT64: | |
df4df182 | 478 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
479 | |
480 | case TDESC_TYPE_INT128: | |
df4df182 | 481 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
482 | |
483 | case TDESC_TYPE_UINT8: | |
df4df182 | 484 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
485 | |
486 | case TDESC_TYPE_UINT16: | |
df4df182 | 487 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
488 | |
489 | case TDESC_TYPE_UINT32: | |
df4df182 | 490 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
491 | |
492 | case TDESC_TYPE_UINT64: | |
df4df182 | 493 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
494 | |
495 | case TDESC_TYPE_UINT128: | |
df4df182 | 496 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
497 | |
498 | case TDESC_TYPE_CODE_PTR: | |
499 | return builtin_type (gdbarch)->builtin_func_ptr; | |
500 | ||
501 | case TDESC_TYPE_DATA_PTR: | |
502 | return builtin_type (gdbarch)->builtin_data_ptr; | |
503 | ||
504 | case TDESC_TYPE_IEEE_SINGLE: | |
e9bb382b | 505 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 506 | floatformats_ieee_single); |
ad068eab UW |
507 | |
508 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 509 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 510 | floatformats_ieee_double); |
ad068eab UW |
511 | |
512 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 513 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 514 | floatformats_arm_ext); |
ad068eab UW |
515 | |
516 | /* Types defined by a target feature. */ | |
517 | case TDESC_TYPE_VECTOR: | |
518 | { | |
519 | struct type *type, *field_type; | |
520 | ||
521 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
522 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
523 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
524 | ||
525 | return type; | |
526 | } | |
527 | ||
528 | case TDESC_TYPE_UNION: | |
529 | { | |
530 | struct type *type, *field_type; | |
531 | struct tdesc_type_field *f; | |
532 | int ix; | |
533 | ||
e9bb382b | 534 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
ad068eab UW |
535 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
536 | ||
537 | for (ix = 0; | |
538 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
539 | ix++) | |
540 | { | |
541 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
542 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
543 | ||
544 | /* If any of the children of this union are vectors, flag the | |
545 | union as a vector also. This allows e.g. a union of two | |
546 | vector types to show up automatically in "info vector". */ | |
547 | if (TYPE_VECTOR (field_type)) | |
548 | TYPE_VECTOR (type) = 1; | |
549 | } | |
550 | ||
551 | return type; | |
552 | } | |
553 | } | |
554 | ||
555 | internal_error (__FILE__, __LINE__, | |
556 | "Type \"%s\" has an unknown kind %d", | |
557 | tdesc_type->name, tdesc_type->kind); | |
558 | } | |
123dc839 DJ |
559 | \f |
560 | ||
561 | /* Support for registers from target descriptions. */ | |
562 | ||
563 | /* Construct the per-gdbarch data. */ | |
564 | ||
565 | static void * | |
566 | tdesc_data_init (struct obstack *obstack) | |
567 | { | |
568 | struct tdesc_arch_data *data; | |
569 | ||
570 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
571 | return data; | |
572 | } | |
573 | ||
574 | /* Similar, but for the temporary copy used during architecture | |
575 | initialization. */ | |
576 | ||
577 | struct tdesc_arch_data * | |
578 | tdesc_data_alloc (void) | |
579 | { | |
580 | return XZALLOC (struct tdesc_arch_data); | |
581 | } | |
582 | ||
583 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
584 | to be used (for instance if it was unsuitable for the | |
585 | architecture). */ | |
586 | ||
587 | void | |
588 | tdesc_data_cleanup (void *data_untyped) | |
589 | { | |
590 | struct tdesc_arch_data *data = data_untyped; | |
591 | ||
ad068eab | 592 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
593 | xfree (data); |
594 | } | |
595 | ||
596 | /* Search FEATURE for a register named NAME. */ | |
597 | ||
7cc46491 DJ |
598 | static struct tdesc_reg * |
599 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
600 | const char *name) | |
123dc839 DJ |
601 | { |
602 | int ixr; | |
603 | struct tdesc_reg *reg; | |
604 | ||
605 | for (ixr = 0; | |
606 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
607 | ixr++) | |
608 | if (strcasecmp (reg->name, name) == 0) | |
7cc46491 | 609 | return reg; |
123dc839 | 610 | |
7cc46491 DJ |
611 | return NULL; |
612 | } | |
613 | ||
614 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
615 | ||
616 | int | |
617 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
618 | struct tdesc_arch_data *data, | |
619 | int regno, const char *name) | |
620 | { | |
ad068eab | 621 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
622 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
623 | ||
624 | if (reg == NULL) | |
625 | return 0; | |
626 | ||
627 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
628 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
629 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
630 | ||
631 | arch_reg.reg = reg; | |
632 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 633 | return 1; |
123dc839 DJ |
634 | } |
635 | ||
7cc46491 DJ |
636 | /* Search FEATURE for a register whose name is in NAMES and assign |
637 | REGNO to it. */ | |
123dc839 DJ |
638 | |
639 | int | |
640 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
641 | struct tdesc_arch_data *data, | |
642 | int regno, const char *const names[]) | |
643 | { | |
644 | int i; | |
645 | ||
646 | for (i = 0; names[i] != NULL; i++) | |
647 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
648 | return 1; | |
649 | ||
650 | return 0; | |
651 | } | |
652 | ||
7cc46491 DJ |
653 | /* Search FEATURE for a register named NAME, and return its size in |
654 | bits. The register must exist. */ | |
655 | ||
656 | int | |
657 | tdesc_register_size (const struct tdesc_feature *feature, | |
658 | const char *name) | |
659 | { | |
660 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
661 | ||
662 | gdb_assert (reg != NULL); | |
663 | return reg->bitsize; | |
664 | } | |
665 | ||
123dc839 DJ |
666 | /* Look up a register by its GDB internal register number. */ |
667 | ||
ad068eab UW |
668 | static struct tdesc_arch_reg * |
669 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 670 | { |
ad068eab | 671 | struct tdesc_arch_reg *reg; |
123dc839 DJ |
672 | struct tdesc_arch_data *data; |
673 | ||
674 | data = gdbarch_data (gdbarch, tdesc_data); | |
ad068eab UW |
675 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
676 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
677 | else |
678 | return NULL; | |
679 | } | |
680 | ||
ad068eab UW |
681 | static struct tdesc_reg * |
682 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
683 | { | |
684 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
685 | return reg? reg->reg : NULL; | |
686 | } | |
687 | ||
f8b73d13 DJ |
688 | /* Return the name of register REGNO, from the target description or |
689 | from an architecture-provided pseudo_register_name method. */ | |
690 | ||
691 | const char * | |
d93859e2 | 692 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 693 | { |
d93859e2 UW |
694 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
695 | int num_regs = gdbarch_num_regs (gdbarch); | |
696 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
697 | |
698 | if (reg != NULL) | |
699 | return reg->name; | |
700 | ||
701 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
702 | { | |
d93859e2 | 703 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); |
123dc839 | 704 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 705 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
706 | } |
707 | ||
708 | return ""; | |
709 | } | |
710 | ||
711 | static struct type * | |
712 | tdesc_register_type (struct gdbarch *gdbarch, int regno) | |
713 | { | |
ad068eab UW |
714 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
715 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
716 | int num_regs = gdbarch_num_regs (gdbarch); |
717 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
718 | ||
719 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
720 | { | |
721 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
722 | gdb_assert (data->pseudo_register_type != NULL); | |
723 | return data->pseudo_register_type (gdbarch, regno); | |
724 | } | |
725 | ||
726 | if (reg == NULL) | |
727 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 728 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 729 | |
ad068eab | 730 | if (arch_reg->type == NULL) |
123dc839 | 731 | { |
ad068eab UW |
732 | /* First check for a predefined or target defined type. */ |
733 | if (reg->tdesc_type) | |
734 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
735 | ||
736 | /* Next try size-sensitive type shortcuts. */ | |
737 | else if (strcmp (reg->type, "float") == 0) | |
738 | { | |
739 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
740 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
741 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
742 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
743 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
744 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
745 | else | |
746 | { | |
747 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
748 | reg->name, reg->bitsize); | |
749 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
750 | } | |
751 | } | |
752 | else if (strcmp (reg->type, "int") == 0) | |
753 | { | |
754 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
755 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
756 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
757 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
758 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
759 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
760 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
761 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
762 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
763 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
764 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
765 | /* A bit desperate by this point... */ | |
766 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; | |
767 | else | |
768 | { | |
769 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
770 | reg->name, reg->bitsize); | |
771 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
772 | } | |
773 | } | |
774 | ||
775 | if (arch_reg->type == NULL) | |
776 | internal_error (__FILE__, __LINE__, | |
777 | "Register \"%s\" has an unknown type \"%s\"", | |
778 | reg->name, reg->type); | |
123dc839 | 779 | } |
123dc839 | 780 | |
ad068eab | 781 | return arch_reg->type; |
123dc839 DJ |
782 | } |
783 | ||
784 | static int | |
785 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
786 | { | |
787 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
788 | ||
789 | if (reg != NULL) | |
790 | return reg->target_regnum; | |
791 | else | |
792 | return -1; | |
793 | } | |
794 | ||
795 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
796 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
797 | Unlike a gdbarch register_reggroup_p method, this function will |
798 | return -1 if it does not know; the caller should handle registers | |
799 | with no specified group. | |
123dc839 DJ |
800 | |
801 | Arbitrary strings (other than "general", "float", and "vector") | |
802 | from the description are not used; they cause the register to be | |
803 | displayed in "info all-registers" but excluded from "info | |
804 | registers" et al. The names of containing features are also not | |
805 | used. This might be extended to display registers in some more | |
806 | useful groupings. | |
807 | ||
808 | The save-restore flag is also implemented here. */ | |
809 | ||
f8b73d13 DJ |
810 | int |
811 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
812 | struct reggroup *reggroup) | |
123dc839 | 813 | { |
123dc839 DJ |
814 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
815 | ||
123dc839 DJ |
816 | if (reg != NULL && reg->group != NULL) |
817 | { | |
818 | int general_p = 0, float_p = 0, vector_p = 0; | |
819 | ||
820 | if (strcmp (reg->group, "general") == 0) | |
821 | general_p = 1; | |
822 | else if (strcmp (reg->group, "float") == 0) | |
823 | float_p = 1; | |
824 | else if (strcmp (reg->group, "vector") == 0) | |
825 | vector_p = 1; | |
826 | ||
827 | if (reggroup == float_reggroup) | |
828 | return float_p; | |
829 | ||
830 | if (reggroup == vector_reggroup) | |
831 | return vector_p; | |
832 | ||
833 | if (reggroup == general_reggroup) | |
834 | return general_p; | |
835 | } | |
836 | ||
837 | if (reg != NULL | |
838 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
839 | return reg->save_restore; | |
840 | ||
f8b73d13 DJ |
841 | return -1; |
842 | } | |
843 | ||
844 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
845 | group specified go to the default reggroup function and are handled | |
846 | by type. */ | |
847 | ||
848 | static int | |
849 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
850 | struct reggroup *reggroup) | |
851 | { | |
852 | int num_regs = gdbarch_num_regs (gdbarch); | |
853 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
854 | int ret; | |
855 | ||
856 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
857 | { | |
858 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
859 | gdb_assert (data->pseudo_register_reggroup_p != NULL); | |
860 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
861 | } | |
862 | ||
863 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
864 | if (ret != -1) | |
865 | return ret; | |
866 | ||
123dc839 DJ |
867 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
868 | } | |
869 | ||
870 | /* Record architecture-specific functions to call for pseudo-register | |
871 | support. */ | |
872 | ||
873 | void | |
874 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
875 | gdbarch_register_name_ftype *pseudo_name) | |
876 | { | |
877 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
878 | ||
879 | data->pseudo_register_name = pseudo_name; | |
880 | } | |
881 | ||
882 | void | |
883 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
884 | gdbarch_register_type_ftype *pseudo_type) | |
885 | { | |
886 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
887 | ||
888 | data->pseudo_register_type = pseudo_type; | |
889 | } | |
890 | ||
891 | void | |
892 | set_tdesc_pseudo_register_reggroup_p | |
893 | (struct gdbarch *gdbarch, | |
894 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
895 | { | |
896 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
897 | ||
898 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
899 | } | |
900 | ||
901 | /* Update GDBARCH to use the target description for registers. */ | |
902 | ||
903 | void | |
904 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 905 | const struct target_desc *target_desc, |
123dc839 DJ |
906 | struct tdesc_arch_data *early_data) |
907 | { | |
908 | int num_regs = gdbarch_num_regs (gdbarch); | |
909 | int i, ixf, ixr; | |
123dc839 DJ |
910 | struct tdesc_feature *feature; |
911 | struct tdesc_reg *reg; | |
912 | struct tdesc_arch_data *data; | |
ad068eab | 913 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
914 | htab_t reg_hash; |
915 | ||
123dc839 DJ |
916 | /* We can't use the description for registers if it doesn't describe |
917 | any. This function should only be called after validating | |
918 | registers, so the caller should know that registers are | |
919 | included. */ | |
920 | gdb_assert (tdesc_has_registers (target_desc)); | |
921 | ||
922 | data = gdbarch_data (gdbarch, tdesc_data); | |
ad068eab | 923 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
924 | xfree (early_data); |
925 | ||
926 | /* Build up a set of all registers, so that we can assign register | |
927 | numbers where needed. The hash table expands as necessary, so | |
928 | the initial size is arbitrary. */ | |
929 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
930 | for (ixf = 0; | |
931 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
932 | ixf++) | |
933 | for (ixr = 0; | |
934 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
935 | ixr++) | |
936 | { | |
937 | void **slot = htab_find_slot (reg_hash, reg, INSERT); | |
938 | ||
939 | *slot = reg; | |
940 | } | |
941 | ||
942 | /* Remove any registers which were assigned numbers by the | |
943 | architecture. */ | |
ad068eab UW |
944 | for (ixr = 0; |
945 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); | |
946 | ixr++) | |
947 | if (arch_reg->reg) | |
948 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
949 | |
950 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 951 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
952 | Iterate over the features, not the hash table, so that the order |
953 | matches that in the target description. */ | |
954 | ||
ad068eab UW |
955 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
956 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
957 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
958 | for (ixf = 0; |
959 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
960 | ixf++) | |
961 | for (ixr = 0; | |
962 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
963 | ixr++) | |
964 | if (htab_find (reg_hash, reg) != NULL) | |
965 | { | |
ad068eab UW |
966 | new_arch_reg.reg = reg; |
967 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
968 | num_regs++; |
969 | } | |
970 | ||
971 | htab_delete (reg_hash); | |
972 | ||
973 | /* Update the architecture. */ | |
974 | set_gdbarch_num_regs (gdbarch, num_regs); | |
975 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
976 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
977 | set_gdbarch_remote_register_number (gdbarch, | |
978 | tdesc_remote_register_number); | |
979 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
980 | } | |
981 | \f | |
982 | ||
424163ea DJ |
983 | /* Methods for constructing a target description. */ |
984 | ||
123dc839 DJ |
985 | static void |
986 | tdesc_free_reg (struct tdesc_reg *reg) | |
987 | { | |
988 | xfree (reg->name); | |
989 | xfree (reg->type); | |
990 | xfree (reg->group); | |
991 | xfree (reg); | |
992 | } | |
993 | ||
994 | void | |
995 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
996 | int regnum, int save_restore, const char *group, | |
997 | int bitsize, const char *type) | |
998 | { | |
999 | struct tdesc_reg *reg = XZALLOC (struct tdesc_reg); | |
1000 | ||
1001 | reg->name = xstrdup (name); | |
1002 | reg->target_regnum = regnum; | |
1003 | reg->save_restore = save_restore; | |
1004 | reg->group = group ? xstrdup (group) : NULL; | |
1005 | reg->bitsize = bitsize; | |
c8c12293 | 1006 | reg->type = type ? xstrdup (type) : xstrdup ("<unknown>"); |
123dc839 DJ |
1007 | |
1008 | /* If the register's type is target-defined, look it up now. We may not | |
1009 | have easy access to the containing feature when we want it later. */ | |
ad068eab | 1010 | reg->tdesc_type = tdesc_named_type (feature, reg->type); |
123dc839 DJ |
1011 | |
1012 | VEC_safe_push (tdesc_reg_p, feature->registers, reg); | |
1013 | } | |
1014 | ||
ad068eab UW |
1015 | static void |
1016 | tdesc_free_type (struct tdesc_type *type) | |
1017 | { | |
1018 | ||
1019 | switch (type->kind) | |
1020 | { | |
1021 | case TDESC_TYPE_UNION: | |
1022 | { | |
1023 | struct tdesc_type_field *f; | |
1024 | int ix; | |
1025 | ||
1026 | for (ix = 0; | |
1027 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix, f); | |
1028 | ix++) | |
1029 | xfree (f->name); | |
1030 | ||
1031 | VEC_free (tdesc_type_field, type->u.u.fields); | |
1032 | } | |
1033 | break; | |
1034 | ||
1035 | default: | |
1036 | break; | |
1037 | } | |
1038 | ||
1039 | xfree (type->name); | |
1040 | xfree (type); | |
1041 | } | |
1042 | ||
1043 | struct tdesc_type * | |
1044 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1045 | struct tdesc_type *field_type, int count) | |
1046 | { | |
1047 | struct tdesc_type *type = XZALLOC (struct tdesc_type); | |
1048 | ||
1049 | type->name = xstrdup (name); | |
1050 | type->kind = TDESC_TYPE_VECTOR; | |
1051 | type->u.v.type = field_type; | |
1052 | type->u.v.count = count; | |
1053 | ||
1054 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1055 | return type; | |
1056 | } | |
1057 | ||
1058 | struct tdesc_type * | |
1059 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1060 | { | |
1061 | struct tdesc_type *type = XZALLOC (struct tdesc_type); | |
1062 | ||
1063 | type->name = xstrdup (name); | |
1064 | type->kind = TDESC_TYPE_UNION; | |
1065 | ||
1066 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1067 | return type; | |
1068 | } | |
1069 | ||
1070 | void | |
1071 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1072 | struct tdesc_type *field_type) | |
1073 | { | |
1074 | struct tdesc_type_field f = { 0 }; | |
1075 | ||
1076 | gdb_assert (type->kind == TDESC_TYPE_UNION); | |
1077 | ||
1078 | f.name = xstrdup (field_name); | |
1079 | f.type = field_type; | |
1080 | ||
1081 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1082 | } | |
1083 | ||
123dc839 DJ |
1084 | static void |
1085 | tdesc_free_feature (struct tdesc_feature *feature) | |
1086 | { | |
1087 | struct tdesc_reg *reg; | |
ad068eab | 1088 | struct tdesc_type *type; |
123dc839 DJ |
1089 | int ix; |
1090 | ||
1091 | for (ix = 0; VEC_iterate (tdesc_reg_p, feature->registers, ix, reg); ix++) | |
1092 | tdesc_free_reg (reg); | |
1093 | VEC_free (tdesc_reg_p, feature->registers); | |
1094 | ||
ad068eab UW |
1095 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
1096 | tdesc_free_type (type); | |
1097 | VEC_free (tdesc_type_p, feature->types); | |
123dc839 DJ |
1098 | |
1099 | xfree (feature->name); | |
1100 | xfree (feature); | |
1101 | } | |
1102 | ||
1103 | struct tdesc_feature * | |
1104 | tdesc_create_feature (struct target_desc *tdesc, const char *name) | |
1105 | { | |
1106 | struct tdesc_feature *new_feature = XZALLOC (struct tdesc_feature); | |
1107 | ||
1108 | new_feature->name = xstrdup (name); | |
1109 | ||
1110 | VEC_safe_push (tdesc_feature_p, tdesc->features, new_feature); | |
1111 | return new_feature; | |
1112 | } | |
1113 | ||
424163ea DJ |
1114 | struct target_desc * |
1115 | allocate_target_description (void) | |
1116 | { | |
1117 | return XZALLOC (struct target_desc); | |
1118 | } | |
29709017 | 1119 | |
23181151 DJ |
1120 | static void |
1121 | free_target_description (void *arg) | |
1122 | { | |
1123 | struct target_desc *target_desc = arg; | |
123dc839 | 1124 | struct tdesc_feature *feature; |
23181151 DJ |
1125 | struct property *prop; |
1126 | int ix; | |
1127 | ||
123dc839 DJ |
1128 | for (ix = 0; |
1129 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
1130 | ix++) | |
1131 | tdesc_free_feature (feature); | |
1132 | VEC_free (tdesc_feature_p, target_desc->features); | |
1133 | ||
23181151 DJ |
1134 | for (ix = 0; |
1135 | VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1136 | ix++) | |
1137 | { | |
1138 | xfree (prop->key); | |
1139 | xfree (prop->value); | |
1140 | } | |
1141 | VEC_free (property_s, target_desc->properties); | |
1142 | ||
1143 | xfree (target_desc); | |
1144 | } | |
1145 | ||
1146 | struct cleanup * | |
1147 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1148 | { | |
1149 | return make_cleanup (free_target_description, target_desc); | |
1150 | } | |
1151 | ||
29709017 DJ |
1152 | void |
1153 | set_tdesc_property (struct target_desc *target_desc, | |
1154 | const char *key, const char *value) | |
1155 | { | |
1156 | struct property *prop, new_prop; | |
1157 | int ix; | |
1158 | ||
1159 | gdb_assert (key != NULL && value != NULL); | |
1160 | ||
1161 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1162 | ix++) | |
1163 | if (strcmp (prop->key, key) == 0) | |
1164 | internal_error (__FILE__, __LINE__, | |
1165 | _("Attempted to add duplicate property \"%s\""), key); | |
1166 | ||
23181151 DJ |
1167 | new_prop.key = xstrdup (key); |
1168 | new_prop.value = xstrdup (value); | |
29709017 DJ |
1169 | VEC_safe_push (property_s, target_desc->properties, &new_prop); |
1170 | } | |
23181151 DJ |
1171 | |
1172 | void | |
1173 | set_tdesc_architecture (struct target_desc *target_desc, | |
1174 | const struct bfd_arch_info *arch) | |
1175 | { | |
1176 | target_desc->arch = arch; | |
1177 | } | |
08d16641 PA |
1178 | |
1179 | void | |
1180 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1181 | { | |
1182 | target_desc->osabi = osabi; | |
1183 | } | |
23181151 DJ |
1184 | \f |
1185 | ||
1186 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1187 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1188 | ||
1189 | /* Helper functions for the CLI commands. */ | |
1190 | ||
1191 | static void | |
1192 | set_tdesc_cmd (char *args, int from_tty) | |
1193 | { | |
1194 | help_list (tdesc_set_cmdlist, "set tdesc ", -1, gdb_stdout); | |
1195 | } | |
1196 | ||
1197 | static void | |
1198 | show_tdesc_cmd (char *args, int from_tty) | |
1199 | { | |
1200 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1201 | } | |
1202 | ||
1203 | static void | |
1204 | unset_tdesc_cmd (char *args, int from_tty) | |
1205 | { | |
1206 | help_list (tdesc_unset_cmdlist, "unset tdesc ", -1, gdb_stdout); | |
1207 | } | |
1208 | ||
1209 | static void | |
1210 | set_tdesc_filename_cmd (char *args, int from_tty, | |
1211 | struct cmd_list_element *c) | |
1212 | { | |
1213 | target_clear_description (); | |
1214 | target_find_description (); | |
1215 | } | |
1216 | ||
1217 | static void | |
1218 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1219 | struct cmd_list_element *c, | |
1220 | const char *value) | |
1221 | { | |
1222 | if (value != NULL && *value != '\0') | |
1223 | printf_filtered (_("\ | |
1224 | The target description will be read from \"%s\".\n"), | |
1225 | value); | |
1226 | else | |
1227 | printf_filtered (_("\ | |
1228 | The target description will be read from the target.\n")); | |
1229 | } | |
1230 | ||
1231 | static void | |
1232 | unset_tdesc_filename_cmd (char *args, int from_tty) | |
1233 | { | |
1234 | xfree (target_description_filename); | |
1235 | target_description_filename = NULL; | |
1236 | target_clear_description (); | |
1237 | target_find_description (); | |
1238 | } | |
1239 | ||
81adfced DJ |
1240 | static void |
1241 | maint_print_c_tdesc_cmd (char *args, int from_tty) | |
1242 | { | |
1243 | const struct target_desc *tdesc; | |
1244 | const char *filename, *inp; | |
1245 | char *function, *outp; | |
1246 | struct property *prop; | |
1247 | struct tdesc_feature *feature; | |
1248 | struct tdesc_reg *reg; | |
ad068eab UW |
1249 | struct tdesc_type *type; |
1250 | struct tdesc_type_field *f; | |
81adfced DJ |
1251 | int ix, ix2, ix3; |
1252 | ||
1253 | /* Use the global target-supplied description, not the current | |
1254 | architecture's. This lets a GDB for one architecture generate C | |
1255 | for another architecture's description, even though the gdbarch | |
1256 | initialization code will reject the new description. */ | |
1257 | tdesc = current_target_desc; | |
1258 | if (tdesc == NULL) | |
1259 | error (_("There is no target description to print.")); | |
1260 | ||
1261 | if (target_description_filename == NULL) | |
1262 | error (_("The current target description did not come from an XML file.")); | |
1263 | ||
1264 | filename = lbasename (target_description_filename); | |
db3b9a10 | 1265 | function = alloca (strlen (filename) + 1); |
81adfced DJ |
1266 | for (inp = filename, outp = function; *inp != '\0'; inp++) |
1267 | if (*inp == '.') | |
1268 | break; | |
1269 | else if (*inp == '-') | |
1270 | *outp++ = '_'; | |
1271 | else | |
1272 | *outp++ = *inp; | |
1273 | *outp = '\0'; | |
1274 | ||
1275 | /* Standard boilerplate. */ | |
1276 | printf_unfiltered ("/* THIS FILE IS GENERATED. Original: %s */\n\n", | |
1277 | filename); | |
1278 | printf_unfiltered ("#include \"defs.h\"\n"); | |
81adfced DJ |
1279 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); |
1280 | printf_unfiltered ("\n"); | |
1281 | ||
1282 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", function); | |
1283 | printf_unfiltered ("static void\n"); | |
1284 | printf_unfiltered ("initialize_tdesc_%s (void)\n", function); | |
1285 | printf_unfiltered ("{\n"); | |
1286 | printf_unfiltered | |
1287 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1288 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
ad068eab | 1289 | printf_unfiltered (" struct tdesc_type *field_type, *type;\n"); |
81adfced DJ |
1290 | printf_unfiltered ("\n"); |
1291 | ||
1292 | if (tdesc_architecture (tdesc) != NULL) | |
1293 | { | |
1294 | printf_unfiltered | |
1295 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1296 | tdesc_architecture (tdesc)->printable_name); | |
1297 | printf_unfiltered ("\n"); | |
1298 | } | |
1299 | ||
1300 | for (ix = 0; VEC_iterate (property_s, tdesc->properties, ix, prop); | |
1301 | ix++) | |
1302 | { | |
1303 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1304 | prop->key, prop->value); | |
1305 | } | |
1306 | ||
1307 | for (ix = 0; | |
1308 | VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature); | |
1309 | ix++) | |
1310 | { | |
1311 | printf_unfiltered (" feature = tdesc_create_feature (result, \"%s\");\n", | |
1312 | feature->name); | |
1313 | ||
1314 | for (ix2 = 0; | |
ad068eab | 1315 | VEC_iterate (tdesc_type_p, feature->types, ix2, type); |
81adfced DJ |
1316 | ix2++) |
1317 | { | |
ad068eab | 1318 | switch (type->kind) |
81adfced | 1319 | { |
ad068eab | 1320 | case TDESC_TYPE_VECTOR: |
81adfced DJ |
1321 | printf_unfiltered |
1322 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1323 | type->u.v.type->name); |
81adfced | 1324 | printf_unfiltered |
ad068eab UW |
1325 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", |
1326 | type->name, type->u.v.count); | |
81adfced | 1327 | break; |
ad068eab | 1328 | case TDESC_TYPE_UNION: |
81adfced | 1329 | printf_unfiltered |
ad068eab UW |
1330 | (" type = tdesc_create_union (feature, \"%s\");\n", |
1331 | type->name); | |
1332 | for (ix3 = 0; | |
1333 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1334 | ix3++) | |
81adfced DJ |
1335 | { |
1336 | printf_unfiltered | |
1337 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1338 | f->type->name); |
81adfced | 1339 | printf_unfiltered |
ad068eab UW |
1340 | (" tdesc_add_field (type, \"%s\", field_type);\n", |
1341 | f->name); | |
81adfced | 1342 | } |
81adfced DJ |
1343 | break; |
1344 | default: | |
ad068eab | 1345 | error (_("C output is not supported type \"%s\"."), type->name); |
81adfced | 1346 | } |
81adfced DJ |
1347 | printf_unfiltered ("\n"); |
1348 | } | |
1349 | ||
1350 | for (ix2 = 0; | |
1351 | VEC_iterate (tdesc_reg_p, feature->registers, ix2, reg); | |
1352 | ix2++) | |
1353 | { | |
1354 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
1355 | reg->name, reg->target_regnum, reg->save_restore); | |
1356 | if (reg->group) | |
1357 | printf_unfiltered ("\"%s\", ", reg->group); | |
1358 | else | |
1359 | printf_unfiltered ("NULL, "); | |
1360 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
1361 | } | |
1362 | ||
1363 | printf_unfiltered ("\n"); | |
1364 | } | |
1365 | ||
1366 | printf_unfiltered (" tdesc_%s = result;\n", function); | |
1367 | printf_unfiltered ("}\n"); | |
1368 | } | |
1369 | ||
2c0b251b PA |
1370 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1371 | extern initialize_file_ftype _initialize_target_descriptions; | |
1372 | ||
23181151 DJ |
1373 | void |
1374 | _initialize_target_descriptions (void) | |
1375 | { | |
123dc839 DJ |
1376 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
1377 | ||
23181151 DJ |
1378 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
1379 | Set target description specific variables."), | |
1380 | &tdesc_set_cmdlist, "set tdesc ", | |
1381 | 0 /* allow-unknown */, &setlist); | |
1382 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
1383 | Show target description specific variables."), | |
1384 | &tdesc_show_cmdlist, "show tdesc ", | |
1385 | 0 /* allow-unknown */, &showlist); | |
1386 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
1387 | Unset target description specific variables."), | |
1388 | &tdesc_unset_cmdlist, "unset tdesc ", | |
1389 | 0 /* allow-unknown */, &unsetlist); | |
1390 | ||
1391 | add_setshow_filename_cmd ("filename", class_obscure, | |
1392 | &target_description_filename, | |
1393 | _("\ | |
1394 | Set the file to read for an XML target description"), _("\ | |
1395 | Show the file to read for an XML target description"), _("\ | |
1396 | When set, GDB will read the target description from a local\n\ | |
1397 | file instead of querying the remote target."), | |
1398 | set_tdesc_filename_cmd, | |
1399 | show_tdesc_filename_cmd, | |
1400 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
1401 | ||
1402 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
1403 | Unset the file to read for an XML target description. When unset,\n\ | |
1404 | GDB will read the description from the target."), | |
1405 | &tdesc_unset_cmdlist); | |
81adfced DJ |
1406 | |
1407 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
1408 | Print the current target description as a C source file."), | |
1409 | &maintenanceprintlist); | |
23181151 | 1410 | } |